L: platform-driver-x86@vger.kernel.org
S: Maintained
W: http://launchpad.net/ideapad-laptop
-F: drivers/platform/x86/ideapad-laptop.c
+F: drivers/platform/x86/lenovo/ideapad-laptop.c
IDEAPAD LAPTOP SLIDEBAR DRIVER
M: Andrey Moiseev <o2g.org.ru@gmail.com>
W: http://legousb.sourceforge.net/
F: drivers/usb/misc/legousbtower.c
+LENOVO drivers
+M: Mark Pearson <mpearson-lenovo@squebb.ca>
+L: platform-driver-x86@vger.kernel.org
+S: Maintained
+F: drivers/platform/x86/lenovo/*
+
LENOVO WMI HOTKEY UTILITIES DRIVER
M: Jackie Dong <xy-jackie@139.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
-F: drivers/platform/x86/lenovo-wmi-hotkey-utilities.c
+F: drivers/platform/x86/lenovo/wmi-hotkey-utilities.c
LETSKETCH HID TABLET DRIVER
M: Hans de Goede <hdegoede@redhat.com>
W: http://ibm-acpi.sourceforge.net
W: http://thinkwiki.org/wiki/Ibm-acpi
T: git git://repo.or.cz/linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git
-F: drivers/platform/x86/thinkpad_acpi.c
+F: drivers/platform/x86/lenovo/thinkpad_acpi.c
THINKPAD LMI DRIVER
-M: Mark Pearson <markpearson@lenovo.com>
+M: Mark Pearson <mpearson-lenovo@squebb.ca>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: Documentation/ABI/testing/sysfs-class-firmware-attributes
-F: drivers/platform/x86/think-lmi.?
+F: drivers/platform/x86/lenovo/think-lmi.?
THP7312 ISP DRIVER
M: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To compile this driver as a module, choose M here: the module will
be called gigabyte-wmi.
-config YOGABOOK
- tristate "Lenovo Yoga Book tablet key driver"
- depends on ACPI_WMI
- depends on INPUT
- depends on I2C
- select LEDS_CLASS
- select NEW_LEDS
- help
- Say Y here if you want to support the 'Pen' key and keyboard backlight
- control on the Lenovo Yoga Book tablets.
-
- To compile this driver as a module, choose M here: the module will
- be called lenovo-yogabook.
-
-config YT2_1380
- tristate "Lenovo Yoga Tablet 2 1380 fast charge driver"
- depends on SERIAL_DEV_BUS
- depends on EXTCON
- depends on ACPI
- help
- Say Y here to enable support for the custom fast charging protocol
- found on the Lenovo Yoga Tablet 2 1380F / 1380L models.
-
- To compile this driver as a module, choose M here: the module will
- be called lenovo-yogabook.
-
config ACERHDF
tristate "Acer Aspire One temperature and fan driver"
depends on ACPI_EC && THERMAL
state = 0 (BIOS SMIs on)
state = 1 (BIOS SMIs off)
-config IDEAPAD_LAPTOP
- tristate "Lenovo IdeaPad Laptop Extras"
- depends on ACPI
- depends on RFKILL && INPUT
- depends on SERIO_I8042
- depends on BACKLIGHT_CLASS_DEVICE
- depends on ACPI_VIDEO || ACPI_VIDEO = n
- depends on ACPI_WMI || ACPI_WMI = n
- select ACPI_PLATFORM_PROFILE
- select INPUT_SPARSEKMAP
- select NEW_LEDS
- select LEDS_CLASS
- help
- This is a driver for Lenovo IdeaPad netbooks contains drivers for
- rfkill switch, hotkey, fan control and backlight control.
-
-config LENOVO_WMI_HOTKEY_UTILITIES
- tristate "Lenovo Hotkey Utility WMI extras driver"
- depends on ACPI_WMI
- select NEW_LEDS
- select LEDS_CLASS
- imply IDEAPAD_LAPTOP
- help
- This driver provides WMI support for Lenovo customized hotkeys function,
- such as LED control for audio/mic mute event for Ideapad, YOGA, XiaoXin,
- Gaming, ThinkBook and so on.
-
-config LENOVO_YMC
- tristate "Lenovo Yoga Tablet Mode Control"
- depends on ACPI_WMI
- depends on INPUT
- depends on IDEAPAD_LAPTOP
- select INPUT_SPARSEKMAP
- help
- This driver maps the Tablet Mode Control switch to SW_TABLET_MODE input
- events for Lenovo Yoga notebooks.
-
config SENSORS_HDAPS
tristate "Thinkpad Hard Drive Active Protection System (hdaps)"
depends on INPUT
Say Y here if you have an applicable laptop and want to experience
the awesome power of hdaps.
-config THINKPAD_ACPI
- tristate "ThinkPad ACPI Laptop Extras"
- depends on ACPI_EC
- depends on ACPI_BATTERY
- depends on INPUT
- depends on RFKILL || RFKILL = n
- depends on ACPI_VIDEO || ACPI_VIDEO = n
- depends on BACKLIGHT_CLASS_DEVICE
- depends on I2C
- depends on DRM
- select ACPI_PLATFORM_PROFILE
- select DRM_PRIVACY_SCREEN
- select HWMON
- select NVRAM
- select NEW_LEDS
- select LEDS_CLASS
- select INPUT_SPARSEKMAP
- help
- This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
- support for Fn-Fx key combinations, Bluetooth control, video
- output switching, ThinkLight control, UltraBay eject and more.
- For more information about this driver see
- <file:Documentation/admin-guide/laptops/thinkpad-acpi.rst> and
- <http://ibm-acpi.sf.net/> .
-
- This driver was formerly known as ibm-acpi.
-
- Extra functionality will be available if the rfkill (CONFIG_RFKILL)
- and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
- Note that if you want ThinkPad-ACPI to be built-in instead of
- modular, ALSA and rfkill will also have to be built-in.
-
- If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
-
-config THINKPAD_ACPI_ALSA_SUPPORT
- bool "Console audio control ALSA interface"
- depends on THINKPAD_ACPI
- depends on SND
- depends on SND = y || THINKPAD_ACPI = SND
- default y
- help
- Enables monitoring of the built-in console audio output control
- (headphone and speakers), which is operated by the mute and (in
- some ThinkPad models) volume hotkeys.
-
- If this option is enabled, ThinkPad-ACPI will export an ALSA card
- with a single read-only mixer control, which should be used for
- on-screen-display feedback purposes by the Desktop Environment.
-
- Optionally, the driver will also allow software control (the
- ALSA mixer will be made read-write). Please refer to the driver
- documentation for details.
-
- All IBM models have both volume and mute control. Newer Lenovo
- models only have mute control (the volume hotkeys are just normal
- keys and volume control is done through the main HDA mixer).
-
-config THINKPAD_ACPI_DEBUGFACILITIES
- bool "Maintainer debug facilities"
- depends on THINKPAD_ACPI
- help
- Enables extra stuff in the thinkpad-acpi which is completely useless
- for normal use. Read the driver source to find out what it does.
-
- Say N here, unless you were told by a kernel maintainer to do
- otherwise.
-
-config THINKPAD_ACPI_DEBUG
- bool "Verbose debug mode"
- depends on THINKPAD_ACPI
- help
- Enables extra debugging information, at the expense of a slightly
- increase in driver size.
-
- If you are not sure, say N here.
-
-config THINKPAD_ACPI_UNSAFE_LEDS
- bool "Allow control of important LEDs (unsafe)"
- depends on THINKPAD_ACPI
- help
- Overriding LED state on ThinkPads can mask important
- firmware alerts (like critical battery condition), or misled
- the user into damaging the hardware (undocking or ejecting
- the bay while buses are still active), etc.
-
- LED control on the ThinkPad is write-only (with very few
- exceptions on very ancient models), which makes it
- impossible to know beforehand if important information will
- be lost when one changes LED state.
-
- Users that know what they are doing can enable this option
- and the driver will allow control of every LED, including
- the ones on the dock stations.
-
- Never enable this option on a distribution kernel.
-
- Say N here, unless you are building a kernel for your own
- use, and need to control the important firmware LEDs.
-
-config THINKPAD_ACPI_VIDEO
- bool "Video output control support"
- depends on THINKPAD_ACPI
- default y
- help
- Allows the thinkpad_acpi driver to provide an interface to control
- the various video output ports.
-
- This feature often won't work well, depending on ThinkPad model,
- display state, video output devices in use, whether there is a X
- server running, phase of the moon, and the current mood of
- Schroedinger's cat. If you can use X.org's RandR to control
- your ThinkPad's video output ports instead of this feature,
- don't think twice: do it and say N here to save memory and avoid
- bad interactions with X.org.
-
- NOTE: access to this feature is limited to processes with the
- CAP_SYS_ADMIN capability, to avoid local DoS issues in platforms
- where it interacts badly with X.org.
-
- If you are not sure, say Y here but do try to check if you could
- be using X.org RandR instead.
-
-config THINKPAD_ACPI_HOTKEY_POLL
- bool "Support NVRAM polling for hot keys"
- depends on THINKPAD_ACPI
- default y
- help
- Some thinkpad models benefit from NVRAM polling to detect a few of
- the hot key press events. If you know your ThinkPad model does not
- need to do NVRAM polling to support any of the hot keys you use,
- unselecting this option will save about 1kB of memory.
-
- ThinkPads T40 and newer, R52 and newer, and X31 and newer are
- unlikely to need NVRAM polling in their latest BIOS versions.
-
- NVRAM polling can detect at most the following keys: ThinkPad/Access
- IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
- Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
-
- If you are not sure, say Y here. The driver enables polling only if
- it is strictly necessary to do so.
-
-config THINKPAD_LMI
- tristate "Lenovo WMI-based systems management driver"
- depends on ACPI_WMI
- depends on DMI
- select FW_ATTR_CLASS
- help
- This driver allows changing BIOS settings on Lenovo machines whose
- BIOS support the WMI interface.
-
- To compile this driver as a module, choose M here: the module will
- be called think-lmi.
-
source "drivers/platform/x86/intel/Kconfig"
+source "drivers/platform/x86/lenovo/Kconfig"
config ACPI_QUICKSTART
tristate "ACPI Quickstart button driver"
To compile this driver as a module, choose M here: the module
will be called inspur-platform-profile.
-config LENOVO_WMI_CAMERA
- tristate "Lenovo WMI Camera Button driver"
- depends on ACPI_WMI
- depends on INPUT
- help
- This driver provides support for Lenovo camera button. The Camera
- button is a GPIO device. This driver receives ACPI notifications when
- the camera button is switched on/off.
-
- To compile this driver as a module, choose M here: the module
- will be called lenovo-wmi-camera.
-
config DASHARO_ACPI
tristate "Dasharo ACPI Platform Driver"
depends on ACPI
# Hewlett Packard Enterprise
obj-$(CONFIG_UV_SYSFS) += uv_sysfs.o
-# IBM Thinkpad and Lenovo
+# IBM Thinkpad (before 2005)
obj-$(CONFIG_IBM_RTL) += ibm_rtl.o
-obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
-obj-$(CONFIG_LENOVO_WMI_HOTKEY_UTILITIES) += lenovo-wmi-hotkey-utilities.o
-obj-$(CONFIG_LENOVO_YMC) += lenovo-ymc.o
obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o
-obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
-obj-$(CONFIG_THINKPAD_LMI) += think-lmi.o
-obj-$(CONFIG_YOGABOOK) += lenovo-yogabook.o
-obj-$(CONFIG_YT2_1380) += lenovo-yoga-tab2-pro-1380-fastcharger.o
-obj-$(CONFIG_LENOVO_WMI_CAMERA) += lenovo-wmi-camera.o
+
+# Lenovo
+obj-y += lenovo/
# Intel
obj-y += intel/
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
- *
- * Copyright © 2010 Intel Corporation
- * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/acpi.h>
-#include <linux/backlight.h>
-#include <linux/bitfield.h>
-#include <linux/bitops.h>
-#include <linux/bug.h>
-#include <linux/cleanup.h>
-#include <linux/debugfs.h>
-#include <linux/device.h>
-#include <linux/dmi.h>
-#include <linux/i8042.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/leds.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/platform_profile.h>
-#include <linux/rfkill.h>
-#include <linux/seq_file.h>
-#include <linux/sysfs.h>
-#include <linux/types.h>
-#include <linux/wmi.h>
-#include "ideapad-laptop.h"
-
-#include <acpi/video.h>
-
-#include <dt-bindings/leds/common.h>
-
-#define IDEAPAD_RFKILL_DEV_NUM 3
-
-enum {
- CFG_CAP_BT_BIT = 16,
- CFG_CAP_3G_BIT = 17,
- CFG_CAP_WIFI_BIT = 18,
- CFG_CAP_CAM_BIT = 19,
-
- /*
- * These are OnScreenDisplay support bits that can be useful to determine
- * whether a hotkey exists/should show OSD. But they aren't particularly
- * meaningful since they were introduced later, i.e. 2010 IdeaPads
- * don't have these, but they still have had OSD for hotkeys.
- */
- CFG_OSD_NUMLK_BIT = 27,
- CFG_OSD_CAPSLK_BIT = 28,
- CFG_OSD_MICMUTE_BIT = 29,
- CFG_OSD_TOUCHPAD_BIT = 30,
- CFG_OSD_CAM_BIT = 31,
-};
-
-enum {
- GBMD_CONSERVATION_STATE_BIT = 5,
-};
-
-enum {
- SBMC_CONSERVATION_ON = 3,
- SBMC_CONSERVATION_OFF = 5,
-};
-
-enum {
- HALS_KBD_BL_SUPPORT_BIT = 4,
- HALS_KBD_BL_STATE_BIT = 5,
- HALS_USB_CHARGING_SUPPORT_BIT = 6,
- HALS_USB_CHARGING_STATE_BIT = 7,
- HALS_FNLOCK_SUPPORT_BIT = 9,
- HALS_FNLOCK_STATE_BIT = 10,
- HALS_HOTKEYS_PRIMARY_BIT = 11,
-};
-
-enum {
- SALS_KBD_BL_ON = 0x8,
- SALS_KBD_BL_OFF = 0x9,
- SALS_USB_CHARGING_ON = 0xa,
- SALS_USB_CHARGING_OFF = 0xb,
- SALS_FNLOCK_ON = 0xe,
- SALS_FNLOCK_OFF = 0xf,
-};
-
-enum {
- VPCCMD_R_VPC1 = 0x10,
- VPCCMD_R_BL_MAX,
- VPCCMD_R_BL,
- VPCCMD_W_BL,
- VPCCMD_R_WIFI,
- VPCCMD_W_WIFI,
- VPCCMD_R_BT,
- VPCCMD_W_BT,
- VPCCMD_R_BL_POWER,
- VPCCMD_R_NOVO,
- VPCCMD_R_VPC2,
- VPCCMD_R_TOUCHPAD,
- VPCCMD_W_TOUCHPAD,
- VPCCMD_R_CAMERA,
- VPCCMD_W_CAMERA,
- VPCCMD_R_3G,
- VPCCMD_W_3G,
- VPCCMD_R_ODD, /* 0x21 */
- VPCCMD_W_FAN,
- VPCCMD_R_RF,
- VPCCMD_W_RF,
- VPCCMD_W_YMC = 0x2A,
- VPCCMD_R_FAN = 0x2B,
- VPCCMD_R_SPECIAL_BUTTONS = 0x31,
- VPCCMD_W_BL_POWER = 0x33,
-};
-
-/*
- * These correspond to the number of supported states - 1
- * Future keyboard types may need a new system, if there's a collision
- * KBD_BL_TRISTATE_AUTO has no way to report or set the auto state
- * so it effectively has 3 states, but needs to handle 4
- */
-enum {
- KBD_BL_STANDARD = 1,
- KBD_BL_TRISTATE = 2,
- KBD_BL_TRISTATE_AUTO = 3,
-};
-
-#define KBD_BL_QUERY_TYPE 0x1
-#define KBD_BL_TRISTATE_TYPE 0x5
-#define KBD_BL_TRISTATE_AUTO_TYPE 0x7
-
-#define KBD_BL_COMMAND_GET 0x2
-#define KBD_BL_COMMAND_SET 0x3
-#define KBD_BL_COMMAND_TYPE GENMASK(7, 4)
-
-#define KBD_BL_GET_BRIGHTNESS GENMASK(15, 1)
-#define KBD_BL_SET_BRIGHTNESS GENMASK(19, 16)
-
-#define KBD_BL_KBLC_CHANGED_EVENT 12
-
-struct ideapad_dytc_priv {
- enum platform_profile_option current_profile;
- struct device *ppdev; /* platform profile device */
- struct mutex mutex; /* protects the DYTC interface */
- struct ideapad_private *priv;
-};
-
-struct ideapad_rfk_priv {
- int dev;
- struct ideapad_private *priv;
-};
-
-struct ideapad_private {
- struct acpi_device *adev;
- struct mutex vpc_mutex; /* protects the VPC calls */
- struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
- struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
- struct platform_device *platform_device;
- struct input_dev *inputdev;
- struct backlight_device *blightdev;
- struct ideapad_dytc_priv *dytc;
- struct dentry *debug;
- unsigned long cfg;
- unsigned long r_touchpad_val;
- struct {
- bool conservation_mode : 1;
- bool dytc : 1;
- bool fan_mode : 1;
- bool fn_lock : 1;
- bool set_fn_lock_led : 1;
- bool hw_rfkill_switch : 1;
- bool kbd_bl : 1;
- bool touchpad_ctrl_via_ec : 1;
- bool ctrl_ps2_aux_port : 1;
- bool usb_charging : 1;
- bool ymc_ec_trigger : 1;
- } features;
- struct {
- bool initialized;
- int type;
- struct led_classdev led;
- unsigned int last_brightness;
- } kbd_bl;
- struct {
- bool initialized;
- struct led_classdev led;
- unsigned int last_brightness;
- } fn_lock;
-};
-
-static bool no_bt_rfkill;
-module_param(no_bt_rfkill, bool, 0444);
-MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
-
-static bool allow_v4_dytc;
-module_param(allow_v4_dytc, bool, 0444);
-MODULE_PARM_DESC(allow_v4_dytc,
- "Enable DYTC version 4 platform-profile support. "
- "If you need this please report this to: platform-driver-x86@vger.kernel.org");
-
-static bool hw_rfkill_switch;
-module_param(hw_rfkill_switch, bool, 0444);
-MODULE_PARM_DESC(hw_rfkill_switch,
- "Enable rfkill support for laptops with a hw on/off wifi switch/slider. "
- "If you need this please report this to: platform-driver-x86@vger.kernel.org");
-
-static bool set_fn_lock_led;
-module_param(set_fn_lock_led, bool, 0444);
-MODULE_PARM_DESC(set_fn_lock_led,
- "Enable driver based updates of the fn-lock LED on fn-lock changes. "
- "If you need this please report this to: platform-driver-x86@vger.kernel.org");
-
-static bool ctrl_ps2_aux_port;
-module_param(ctrl_ps2_aux_port, bool, 0444);
-MODULE_PARM_DESC(ctrl_ps2_aux_port,
- "Enable driver based PS/2 aux port en-/dis-abling on touchpad on/off toggle. "
- "If you need this please report this to: platform-driver-x86@vger.kernel.org");
-
-static bool touchpad_ctrl_via_ec;
-module_param(touchpad_ctrl_via_ec, bool, 0444);
-MODULE_PARM_DESC(touchpad_ctrl_via_ec,
- "Enable registering a 'touchpad' sysfs-attribute which can be used to manually "
- "tell the EC to enable/disable the touchpad. This may not work on all models.");
-
-static bool ymc_ec_trigger __read_mostly;
-module_param(ymc_ec_trigger, bool, 0444);
-MODULE_PARM_DESC(ymc_ec_trigger,
- "Enable EC triggering work-around to force emitting tablet mode events. "
- "If you need this please report this to: platform-driver-x86@vger.kernel.org");
-
-/*
- * shared data
- */
-
-static struct ideapad_private *ideapad_shared;
-static DEFINE_MUTEX(ideapad_shared_mutex);
-
-static int ideapad_shared_init(struct ideapad_private *priv)
-{
- int ret;
-
- guard(mutex)(&ideapad_shared_mutex);
-
- if (!ideapad_shared) {
- ideapad_shared = priv;
- ret = 0;
- } else {
- dev_warn(&priv->adev->dev, "found multiple platform devices\n");
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static void ideapad_shared_exit(struct ideapad_private *priv)
-{
- guard(mutex)(&ideapad_shared_mutex);
-
- if (ideapad_shared == priv)
- ideapad_shared = NULL;
-}
-
-/*
- * ACPI Helpers
- */
-#define IDEAPAD_EC_TIMEOUT 200 /* in ms */
-
-static int eval_int(acpi_handle handle, const char *name, unsigned long *res)
-{
- unsigned long long result;
- acpi_status status;
-
- status = acpi_evaluate_integer(handle, (char *)name, NULL, &result);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- *res = result;
-
- return 0;
-}
-
-static int eval_int_with_arg(acpi_handle handle, const char *name, unsigned long arg,
- unsigned long *res)
-{
- struct acpi_object_list params;
- unsigned long long result;
- union acpi_object in_obj;
- acpi_status status;
-
- params.count = 1;
- params.pointer = &in_obj;
- in_obj.type = ACPI_TYPE_INTEGER;
- in_obj.integer.value = arg;
-
- status = acpi_evaluate_integer(handle, (char *)name, ¶ms, &result);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- if (res)
- *res = result;
-
- return 0;
-}
-
-static int exec_simple_method(acpi_handle handle, const char *name, unsigned long arg)
-{
- acpi_status status = acpi_execute_simple_method(handle, (char *)name, arg);
-
- return ACPI_FAILURE(status) ? -EIO : 0;
-}
-
-static int eval_gbmd(acpi_handle handle, unsigned long *res)
-{
- return eval_int(handle, "GBMD", res);
-}
-
-static int exec_sbmc(acpi_handle handle, unsigned long arg)
-{
- return exec_simple_method(handle, "SBMC", arg);
-}
-
-static int eval_hals(acpi_handle handle, unsigned long *res)
-{
- return eval_int(handle, "HALS", res);
-}
-
-static int exec_sals(acpi_handle handle, unsigned long arg)
-{
- return exec_simple_method(handle, "SALS", arg);
-}
-
-static int exec_kblc(acpi_handle handle, unsigned long arg)
-{
- return exec_simple_method(handle, "KBLC", arg);
-}
-
-static int eval_kblc(acpi_handle handle, unsigned long cmd, unsigned long *res)
-{
- return eval_int_with_arg(handle, "KBLC", cmd, res);
-}
-
-static int eval_dytc(acpi_handle handle, unsigned long cmd, unsigned long *res)
-{
- return eval_int_with_arg(handle, "DYTC", cmd, res);
-}
-
-static int eval_vpcr(acpi_handle handle, unsigned long cmd, unsigned long *res)
-{
- return eval_int_with_arg(handle, "VPCR", cmd, res);
-}
-
-static int eval_vpcw(acpi_handle handle, unsigned long cmd, unsigned long data)
-{
- struct acpi_object_list params;
- union acpi_object in_obj[2];
- acpi_status status;
-
- params.count = 2;
- params.pointer = in_obj;
- in_obj[0].type = ACPI_TYPE_INTEGER;
- in_obj[0].integer.value = cmd;
- in_obj[1].type = ACPI_TYPE_INTEGER;
- in_obj[1].integer.value = data;
-
- status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- return 0;
-}
-
-static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *data)
-{
- unsigned long end_jiffies, val;
- int err;
-
- err = eval_vpcw(handle, 1, cmd);
- if (err)
- return err;
-
- end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
-
- while (time_before(jiffies, end_jiffies)) {
- schedule();
-
- err = eval_vpcr(handle, 1, &val);
- if (err)
- return err;
-
- if (val == 0)
- return eval_vpcr(handle, 0, data);
- }
-
- acpi_handle_err(handle, "timeout in %s\n", __func__);
-
- return -ETIMEDOUT;
-}
-
-static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long data)
-{
- unsigned long end_jiffies, val;
- int err;
-
- err = eval_vpcw(handle, 0, data);
- if (err)
- return err;
-
- err = eval_vpcw(handle, 1, cmd);
- if (err)
- return err;
-
- end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
-
- while (time_before(jiffies, end_jiffies)) {
- schedule();
-
- err = eval_vpcr(handle, 1, &val);
- if (err)
- return err;
-
- if (val == 0)
- return 0;
- }
-
- acpi_handle_err(handle, "timeout in %s\n", __func__);
-
- return -ETIMEDOUT;
-}
-
-/*
- * debugfs
- */
-static int debugfs_status_show(struct seq_file *s, void *data)
-{
- struct ideapad_private *priv = s->private;
- unsigned long value;
-
- guard(mutex)(&priv->vpc_mutex);
-
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
- seq_printf(s, "Backlight max: %lu\n", value);
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
- seq_printf(s, "Backlight now: %lu\n", value);
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
- seq_printf(s, "BL power value: %s (%lu)\n", value ? "on" : "off", value);
-
- seq_puts(s, "=====================\n");
-
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
- seq_printf(s, "Radio status: %s (%lu)\n", value ? "on" : "off", value);
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
- seq_printf(s, "Wifi status: %s (%lu)\n", value ? "on" : "off", value);
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
- seq_printf(s, "BT status: %s (%lu)\n", value ? "on" : "off", value);
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
- seq_printf(s, "3G status: %s (%lu)\n", value ? "on" : "off", value);
-
- seq_puts(s, "=====================\n");
-
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
- seq_printf(s, "Touchpad status: %s (%lu)\n", value ? "on" : "off", value);
- if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
- seq_printf(s, "Camera status: %s (%lu)\n", value ? "on" : "off", value);
-
- seq_puts(s, "=====================\n");
-
- if (!eval_gbmd(priv->adev->handle, &value))
- seq_printf(s, "GBMD: %#010lx\n", value);
- if (!eval_hals(priv->adev->handle, &value))
- seq_printf(s, "HALS: %#010lx\n", value);
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debugfs_status);
-
-static int debugfs_cfg_show(struct seq_file *s, void *data)
-{
- struct ideapad_private *priv = s->private;
-
- seq_printf(s, "_CFG: %#010lx\n\n", priv->cfg);
-
- seq_puts(s, "Capabilities:");
- if (test_bit(CFG_CAP_BT_BIT, &priv->cfg))
- seq_puts(s, " bluetooth");
- if (test_bit(CFG_CAP_3G_BIT, &priv->cfg))
- seq_puts(s, " 3G");
- if (test_bit(CFG_CAP_WIFI_BIT, &priv->cfg))
- seq_puts(s, " wifi");
- if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg))
- seq_puts(s, " camera");
- seq_puts(s, "\n");
-
- seq_puts(s, "OSD support:");
- if (test_bit(CFG_OSD_NUMLK_BIT, &priv->cfg))
- seq_puts(s, " num-lock");
- if (test_bit(CFG_OSD_CAPSLK_BIT, &priv->cfg))
- seq_puts(s, " caps-lock");
- if (test_bit(CFG_OSD_MICMUTE_BIT, &priv->cfg))
- seq_puts(s, " mic-mute");
- if (test_bit(CFG_OSD_TOUCHPAD_BIT, &priv->cfg))
- seq_puts(s, " touchpad");
- if (test_bit(CFG_OSD_CAM_BIT, &priv->cfg))
- seq_puts(s, " camera");
- seq_puts(s, "\n");
-
- seq_puts(s, "Graphics: ");
- switch (priv->cfg & 0x700) {
- case 0x100:
- seq_puts(s, "Intel");
- break;
- case 0x200:
- seq_puts(s, "ATI");
- break;
- case 0x300:
- seq_puts(s, "Nvidia");
- break;
- case 0x400:
- seq_puts(s, "Intel and ATI");
- break;
- case 0x500:
- seq_puts(s, "Intel and Nvidia");
- break;
- }
- seq_puts(s, "\n");
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
-
-static void ideapad_debugfs_init(struct ideapad_private *priv)
-{
- struct dentry *dir;
-
- dir = debugfs_create_dir("ideapad", NULL);
- priv->debug = dir;
-
- debugfs_create_file("cfg", 0444, dir, priv, &debugfs_cfg_fops);
- debugfs_create_file("status", 0444, dir, priv, &debugfs_status_fops);
-}
-
-static void ideapad_debugfs_exit(struct ideapad_private *priv)
-{
- debugfs_remove_recursive(priv->debug);
- priv->debug = NULL;
-}
-
-/*
- * sysfs
- */
-static ssize_t camera_power_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- unsigned long result = 0;
- int err;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- err = read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result);
- if (err)
- return err;
- }
-
- return sysfs_emit(buf, "%d\n", !!result);
-}
-
-static ssize_t camera_power_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- bool state;
- int err;
-
- err = kstrtobool(buf, &state);
- if (err)
- return err;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- err = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
- if (err)
- return err;
- }
-
- return count;
-}
-
-static DEVICE_ATTR_RW(camera_power);
-
-static ssize_t conservation_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- unsigned long result;
- int err;
-
- err = eval_gbmd(priv->adev->handle, &result);
- if (err)
- return err;
-
- return sysfs_emit(buf, "%d\n", !!test_bit(GBMD_CONSERVATION_STATE_BIT, &result));
-}
-
-static ssize_t conservation_mode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- bool state;
- int err;
-
- err = kstrtobool(buf, &state);
- if (err)
- return err;
-
- err = exec_sbmc(priv->adev->handle, state ? SBMC_CONSERVATION_ON : SBMC_CONSERVATION_OFF);
- if (err)
- return err;
-
- return count;
-}
-
-static DEVICE_ATTR_RW(conservation_mode);
-
-static ssize_t fan_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- unsigned long result = 0;
- int err;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- err = read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result);
- if (err)
- return err;
- }
-
- return sysfs_emit(buf, "%lu\n", result);
-}
-
-static ssize_t fan_mode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- unsigned int state;
- int err;
-
- err = kstrtouint(buf, 0, &state);
- if (err)
- return err;
-
- if (state > 4 || state == 3)
- return -EINVAL;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- err = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
- if (err)
- return err;
- }
-
- return count;
-}
-
-static DEVICE_ATTR_RW(fan_mode);
-
-static int ideapad_fn_lock_get(struct ideapad_private *priv)
-{
- unsigned long hals;
- int err;
-
- err = eval_hals(priv->adev->handle, &hals);
- if (err)
- return err;
-
- return !!test_bit(HALS_FNLOCK_STATE_BIT, &hals);
-}
-
-static int ideapad_fn_lock_set(struct ideapad_private *priv, bool state)
-{
- return exec_sals(priv->adev->handle,
- state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
-}
-
-static void ideapad_fn_lock_led_notify(struct ideapad_private *priv, int brightness)
-{
- if (!priv->fn_lock.initialized)
- return;
-
- if (brightness == priv->fn_lock.last_brightness)
- return;
-
- priv->fn_lock.last_brightness = brightness;
-
- led_classdev_notify_brightness_hw_changed(&priv->fn_lock.led, brightness);
-}
-
-static ssize_t fn_lock_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- int brightness;
-
- brightness = ideapad_fn_lock_get(priv);
- if (brightness < 0)
- return brightness;
-
- return sysfs_emit(buf, "%d\n", brightness);
-}
-
-static ssize_t fn_lock_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- bool state;
- int err;
-
- err = kstrtobool(buf, &state);
- if (err)
- return err;
-
- err = ideapad_fn_lock_set(priv, state);
- if (err)
- return err;
-
- ideapad_fn_lock_led_notify(priv, state);
-
- return count;
-}
-
-static DEVICE_ATTR_RW(fn_lock);
-
-static ssize_t touchpad_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- unsigned long result = 0;
- int err;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- err = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result);
- if (err)
- return err;
- }
-
- priv->r_touchpad_val = result;
-
- return sysfs_emit(buf, "%d\n", !!result);
-}
-
-static ssize_t touchpad_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- bool state;
- int err;
-
- err = kstrtobool(buf, &state);
- if (err)
- return err;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- err = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
- if (err)
- return err;
- }
-
- priv->r_touchpad_val = state;
-
- return count;
-}
-
-static DEVICE_ATTR_RW(touchpad);
-
-static ssize_t usb_charging_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- unsigned long hals;
- int err;
-
- err = eval_hals(priv->adev->handle, &hals);
- if (err)
- return err;
-
- return sysfs_emit(buf, "%d\n", !!test_bit(HALS_USB_CHARGING_STATE_BIT, &hals));
-}
-
-static ssize_t usb_charging_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
- bool state;
- int err;
-
- err = kstrtobool(buf, &state);
- if (err)
- return err;
-
- err = exec_sals(priv->adev->handle, state ? SALS_USB_CHARGING_ON : SALS_USB_CHARGING_OFF);
- if (err)
- return err;
-
- return count;
-}
-
-static DEVICE_ATTR_RW(usb_charging);
-
-static struct attribute *ideapad_attributes[] = {
- &dev_attr_camera_power.attr,
- &dev_attr_conservation_mode.attr,
- &dev_attr_fan_mode.attr,
- &dev_attr_fn_lock.attr,
- &dev_attr_touchpad.attr,
- &dev_attr_usb_charging.attr,
- NULL
-};
-
-static umode_t ideapad_is_visible(struct kobject *kobj,
- struct attribute *attr,
- int idx)
-{
- struct device *dev = kobj_to_dev(kobj);
- struct ideapad_private *priv = dev_get_drvdata(dev);
- bool supported = true;
-
- if (attr == &dev_attr_camera_power.attr)
- supported = test_bit(CFG_CAP_CAM_BIT, &priv->cfg);
- else if (attr == &dev_attr_conservation_mode.attr)
- supported = priv->features.conservation_mode;
- else if (attr == &dev_attr_fan_mode.attr)
- supported = priv->features.fan_mode;
- else if (attr == &dev_attr_fn_lock.attr)
- supported = priv->features.fn_lock;
- else if (attr == &dev_attr_touchpad.attr)
- supported = priv->features.touchpad_ctrl_via_ec;
- else if (attr == &dev_attr_usb_charging.attr)
- supported = priv->features.usb_charging;
-
- return supported ? attr->mode : 0;
-}
-
-static const struct attribute_group ideapad_attribute_group = {
- .is_visible = ideapad_is_visible,
- .attrs = ideapad_attributes
-};
-__ATTRIBUTE_GROUPS(ideapad_attribute);
-
-/*
- * DYTC Platform profile
- */
-#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
-#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
-#define DYTC_CMD_GET 2 /* To get current IC function and mode */
-#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
-
-#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
-#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
-#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
-
-#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
-#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
-
-#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
-#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
-#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
-
-#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
-#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
-#define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */
-
-#define DYTC_MODE_PERFORM 2 /* High power mode aka performance */
-#define DYTC_MODE_LOW_POWER 3 /* Low power mode aka quiet */
-#define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */
-
-#define DYTC_SET_COMMAND(function, mode, on) \
- (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
- (mode) << DYTC_SET_MODE_BIT | \
- (on) << DYTC_SET_VALID_BIT)
-
-#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0)
-
-#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1)
-
-static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile)
-{
- switch (dytcmode) {
- case DYTC_MODE_LOW_POWER:
- *profile = PLATFORM_PROFILE_LOW_POWER;
- break;
- case DYTC_MODE_BALANCE:
- *profile = PLATFORM_PROFILE_BALANCED;
- break;
- case DYTC_MODE_PERFORM:
- *profile = PLATFORM_PROFILE_PERFORMANCE;
- break;
- default: /* Unknown mode */
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
-{
- switch (profile) {
- case PLATFORM_PROFILE_LOW_POWER:
- *perfmode = DYTC_MODE_LOW_POWER;
- break;
- case PLATFORM_PROFILE_BALANCED:
- *perfmode = DYTC_MODE_BALANCE;
- break;
- case PLATFORM_PROFILE_PERFORMANCE:
- *perfmode = DYTC_MODE_PERFORM;
- break;
- default: /* Unknown profile */
- return -EOPNOTSUPP;
- }
-
- return 0;
-}
-
-/*
- * dytc_profile_get: Function to register with platform_profile
- * handler. Returns current platform profile.
- */
-static int dytc_profile_get(struct device *dev,
- enum platform_profile_option *profile)
-{
- struct ideapad_dytc_priv *dytc = dev_get_drvdata(dev);
-
- *profile = dytc->current_profile;
- return 0;
-}
-
-/*
- * Helper function - check if we are in CQL mode and if we are
- * - disable CQL,
- * - run the command
- * - enable CQL
- * If not in CQL mode, just run the command
- */
-static int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd,
- unsigned long *output)
-{
- int err, cmd_err, cur_funcmode;
-
- /* Determine if we are in CQL mode. This alters the commands we do */
- err = eval_dytc(priv->adev->handle, DYTC_CMD_GET, output);
- if (err)
- return err;
-
- cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
- /* Check if we're OK to return immediately */
- if (cmd == DYTC_CMD_GET && cur_funcmode != DYTC_FUNCTION_CQL)
- return 0;
-
- if (cur_funcmode == DYTC_FUNCTION_CQL) {
- err = eval_dytc(priv->adev->handle, DYTC_DISABLE_CQL, NULL);
- if (err)
- return err;
- }
-
- cmd_err = eval_dytc(priv->adev->handle, cmd, output);
- /* Check return condition after we've restored CQL state */
-
- if (cur_funcmode == DYTC_FUNCTION_CQL) {
- err = eval_dytc(priv->adev->handle, DYTC_ENABLE_CQL, NULL);
- if (err)
- return err;
- }
-
- return cmd_err;
-}
-
-/*
- * dytc_profile_set: Function to register with platform_profile
- * handler. Sets current platform profile.
- */
-static int dytc_profile_set(struct device *dev,
- enum platform_profile_option profile)
-{
- struct ideapad_dytc_priv *dytc = dev_get_drvdata(dev);
- struct ideapad_private *priv = dytc->priv;
- unsigned long output;
- int err;
-
- scoped_guard(mutex_intr, &dytc->mutex) {
- if (profile == PLATFORM_PROFILE_BALANCED) {
- /* To get back to balanced mode we just issue a reset command */
- err = eval_dytc(priv->adev->handle, DYTC_CMD_RESET, NULL);
- if (err)
- return err;
- } else {
- int perfmode;
-
- err = convert_profile_to_dytc(profile, &perfmode);
- if (err)
- return err;
-
- /* Determine if we are in CQL mode. This alters the commands we do */
- err = dytc_cql_command(priv,
- DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
- &output);
- if (err)
- return err;
- }
-
- /* Success - update current profile */
- dytc->current_profile = profile;
- return 0;
- }
-
- return -EINTR;
-}
-
-static int dytc_profile_probe(void *drvdata, unsigned long *choices)
-{
- set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
- set_bit(PLATFORM_PROFILE_BALANCED, choices);
- set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
-
- return 0;
-}
-
-static void dytc_profile_refresh(struct ideapad_private *priv)
-{
- enum platform_profile_option profile;
- unsigned long output;
- int err, perfmode;
-
- scoped_guard(mutex, &priv->dytc->mutex)
- err = dytc_cql_command(priv, DYTC_CMD_GET, &output);
- if (err)
- return;
-
- perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
-
- if (convert_dytc_to_profile(perfmode, &profile))
- return;
-
- if (profile != priv->dytc->current_profile) {
- priv->dytc->current_profile = profile;
- platform_profile_notify(priv->dytc->ppdev);
- }
-}
-
-static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
- {
- /* Ideapad 5 Pro 16ACH6 */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_NAME, "82L5")
- }
- },
- {
- /* Ideapad 5 15ITL05 */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad 5 15ITL05")
- }
- },
- {}
-};
-
-static const struct platform_profile_ops dytc_profile_ops = {
- .probe = dytc_profile_probe,
- .profile_get = dytc_profile_get,
- .profile_set = dytc_profile_set,
-};
-
-static int ideapad_dytc_profile_init(struct ideapad_private *priv)
-{
- int err, dytc_version;
- unsigned long output;
-
- if (!priv->features.dytc)
- return -ENODEV;
-
- err = eval_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output);
- /* For all other errors we can flag the failure */
- if (err)
- return err;
-
- /* Check DYTC is enabled and supports mode setting */
- if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output)) {
- dev_info(&priv->platform_device->dev, "DYTC_QUERY_ENABLE_BIT returned false\n");
- return -ENODEV;
- }
-
- dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
-
- if (dytc_version < 4) {
- dev_info(&priv->platform_device->dev, "DYTC_VERSION < 4 is not supported\n");
- return -ENODEV;
- }
-
- if (dytc_version < 5 &&
- !(allow_v4_dytc || dmi_check_system(ideapad_dytc_v4_allow_table))) {
- dev_info(&priv->platform_device->dev,
- "DYTC_VERSION 4 support may not work. Pass ideapad_laptop.allow_v4_dytc=Y on the kernel commandline to enable\n");
- return -ENODEV;
- }
-
- priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL);
- if (!priv->dytc)
- return -ENOMEM;
-
- mutex_init(&priv->dytc->mutex);
-
- priv->dytc->priv = priv;
-
- /* Create platform_profile structure and register */
- priv->dytc->ppdev = devm_platform_profile_register(&priv->platform_device->dev,
- "ideapad-laptop", priv->dytc,
- &dytc_profile_ops);
- if (IS_ERR(priv->dytc->ppdev)) {
- err = PTR_ERR(priv->dytc->ppdev);
- goto pp_reg_failed;
- }
-
- /* Ensure initial values are correct */
- dytc_profile_refresh(priv);
-
- return 0;
-
-pp_reg_failed:
- mutex_destroy(&priv->dytc->mutex);
- kfree(priv->dytc);
- priv->dytc = NULL;
-
- return err;
-}
-
-static void ideapad_dytc_profile_exit(struct ideapad_private *priv)
-{
- if (!priv->dytc)
- return;
-
- mutex_destroy(&priv->dytc->mutex);
- kfree(priv->dytc);
-
- priv->dytc = NULL;
-}
-
-/*
- * Rfkill
- */
-struct ideapad_rfk_data {
- char *name;
- int cfgbit;
- int opcode;
- int type;
-};
-
-static const struct ideapad_rfk_data ideapad_rfk_data[] = {
- { "ideapad_wlan", CFG_CAP_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
- { "ideapad_bluetooth", CFG_CAP_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
- { "ideapad_3g", CFG_CAP_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
-};
-
-static int ideapad_rfk_set(void *data, bool blocked)
-{
- struct ideapad_rfk_priv *priv = data;
- int opcode = ideapad_rfk_data[priv->dev].opcode;
-
- guard(mutex)(&priv->priv->vpc_mutex);
-
- return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
-}
-
-static const struct rfkill_ops ideapad_rfk_ops = {
- .set_block = ideapad_rfk_set,
-};
-
-static void ideapad_sync_rfk_state(struct ideapad_private *priv)
-{
- unsigned long hw_blocked = 0;
- int i;
-
- if (priv->features.hw_rfkill_switch) {
- guard(mutex)(&priv->vpc_mutex);
-
- if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
- return;
- hw_blocked = !hw_blocked;
- }
-
- for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
- if (priv->rfk[i])
- rfkill_set_hw_state(priv->rfk[i], hw_blocked);
-}
-
-static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
-{
- unsigned long rf_enabled;
- int err;
-
- if (no_bt_rfkill && ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH) {
- /* Force to enable bluetooth when no_bt_rfkill=1 */
- write_ec_cmd(priv->adev->handle, ideapad_rfk_data[dev].opcode, 1);
- return 0;
- }
-
- priv->rfk_priv[dev].dev = dev;
- priv->rfk_priv[dev].priv = priv;
-
- priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
- &priv->platform_device->dev,
- ideapad_rfk_data[dev].type,
- &ideapad_rfk_ops,
- &priv->rfk_priv[dev]);
- if (!priv->rfk[dev])
- return -ENOMEM;
-
- err = read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode - 1, &rf_enabled);
- if (err)
- rf_enabled = 1;
-
- rfkill_init_sw_state(priv->rfk[dev], !rf_enabled);
-
- err = rfkill_register(priv->rfk[dev]);
- if (err)
- rfkill_destroy(priv->rfk[dev]);
-
- return err;
-}
-
-static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
-{
- if (!priv->rfk[dev])
- return;
-
- rfkill_unregister(priv->rfk[dev]);
- rfkill_destroy(priv->rfk[dev]);
-}
-
-/*
- * input device
- */
-#define IDEAPAD_WMI_KEY 0x100
-
-static const struct key_entry ideapad_keymap[] = {
- { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
- { KE_KEY, 7, { KEY_CAMERA } },
- { KE_KEY, 8, { KEY_MICMUTE } },
- { KE_KEY, 11, { KEY_F16 } },
- { KE_KEY, 13, { KEY_WLAN } },
- { KE_KEY, 16, { KEY_PROG1 } },
- { KE_KEY, 17, { KEY_PROG2 } },
- { KE_KEY, 64, { KEY_PROG3 } },
- { KE_KEY, 65, { KEY_PROG4 } },
- { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
- { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
- { KE_KEY, 128, { KEY_ESC } },
-
- /*
- * WMI keys
- */
-
- /* FnLock (handled by the firmware) */
- { KE_IGNORE, 0x02 | IDEAPAD_WMI_KEY },
- /* Esc (handled by the firmware) */
- { KE_IGNORE, 0x03 | IDEAPAD_WMI_KEY },
- /* Customizable Lenovo Hotkey ("star" with 'S' inside) */
- { KE_KEY, 0x01 | IDEAPAD_WMI_KEY, { KEY_FAVORITES } },
- { KE_KEY, 0x04 | IDEAPAD_WMI_KEY, { KEY_SELECTIVE_SCREENSHOT } },
- /* Lenovo Support */
- { KE_KEY, 0x07 | IDEAPAD_WMI_KEY, { KEY_HELP } },
- { KE_KEY, 0x0e | IDEAPAD_WMI_KEY, { KEY_PICKUP_PHONE } },
- { KE_KEY, 0x0f | IDEAPAD_WMI_KEY, { KEY_HANGUP_PHONE } },
- /* Refresh Rate Toggle (Fn+R) */
- { KE_KEY, 0x10 | IDEAPAD_WMI_KEY, { KEY_REFRESH_RATE_TOGGLE } },
- /* Dark mode toggle */
- { KE_KEY, 0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
- /* Sound profile switch */
- { KE_KEY, 0x12 | IDEAPAD_WMI_KEY, { KEY_PROG2 } },
- /* Lenovo Virtual Background application */
- { KE_KEY, 0x28 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
- /* Lenovo Support */
- { KE_KEY, 0x27 | IDEAPAD_WMI_KEY, { KEY_HELP } },
- /* Refresh Rate Toggle */
- { KE_KEY, 0x0a | IDEAPAD_WMI_KEY, { KEY_REFRESH_RATE_TOGGLE } },
- /* Specific to some newer models */
- { KE_KEY, 0x3e | IDEAPAD_WMI_KEY, { KEY_MICMUTE } },
- { KE_KEY, 0x3f | IDEAPAD_WMI_KEY, { KEY_RFKILL } },
- /* Star- (User Assignable Key) */
- { KE_KEY, 0x44 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
- /* Eye */
- { KE_KEY, 0x45 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
- /* Performance toggle also Fn+Q, handled inside ideapad_wmi_notify() */
- { KE_KEY, 0x3d | IDEAPAD_WMI_KEY, { KEY_PROG4 } },
- /* shift + prtsc */
- { KE_KEY, 0x2d | IDEAPAD_WMI_KEY, { KEY_CUT } },
- { KE_KEY, 0x29 | IDEAPAD_WMI_KEY, { KEY_TOUCHPAD_TOGGLE } },
- { KE_KEY, 0x2a | IDEAPAD_WMI_KEY, { KEY_ROOT_MENU } },
-
- { KE_END },
-};
-
-static int ideapad_input_init(struct ideapad_private *priv)
-{
- struct input_dev *inputdev;
- int err;
-
- inputdev = input_allocate_device();
- if (!inputdev)
- return -ENOMEM;
-
- inputdev->name = "Ideapad extra buttons";
- inputdev->phys = "ideapad/input0";
- inputdev->id.bustype = BUS_HOST;
- inputdev->dev.parent = &priv->platform_device->dev;
-
- err = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
- if (err) {
- dev_err(&priv->platform_device->dev,
- "Could not set up input device keymap: %d\n", err);
- goto err_free_dev;
- }
-
- err = input_register_device(inputdev);
- if (err) {
- dev_err(&priv->platform_device->dev,
- "Could not register input device: %d\n", err);
- goto err_free_dev;
- }
-
- priv->inputdev = inputdev;
-
- return 0;
-
-err_free_dev:
- input_free_device(inputdev);
-
- return err;
-}
-
-static void ideapad_input_exit(struct ideapad_private *priv)
-{
- input_unregister_device(priv->inputdev);
- priv->inputdev = NULL;
-}
-
-static void ideapad_input_report(struct ideapad_private *priv,
- unsigned long scancode)
-{
- sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
-}
-
-static void ideapad_input_novokey(struct ideapad_private *priv)
-{
- unsigned long long_pressed;
-
- scoped_guard(mutex, &priv->vpc_mutex)
- if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
- return;
-
- if (long_pressed)
- ideapad_input_report(priv, 17);
- else
- ideapad_input_report(priv, 16);
-}
-
-static void ideapad_check_special_buttons(struct ideapad_private *priv)
-{
- unsigned long bit, value;
-
- scoped_guard(mutex, &priv->vpc_mutex)
- if (read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value))
- return;
-
- for_each_set_bit (bit, &value, 16) {
- switch (bit) {
- case 6: /* Z570 */
- case 0: /* Z580 */
- /* Thermal Management / Performance Mode button */
- if (priv->dytc)
- platform_profile_cycle();
- else
- ideapad_input_report(priv, 65);
- break;
- case 1:
- /* OneKey Theater button */
- ideapad_input_report(priv, 64);
- break;
- default:
- dev_info(&priv->platform_device->dev,
- "Unknown special button: %lu\n", bit);
- break;
- }
- }
-}
-
-/*
- * backlight
- */
-static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
-{
- struct ideapad_private *priv = bl_get_data(blightdev);
- unsigned long now;
- int err;
-
- guard(mutex)(&priv->vpc_mutex);
-
- err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
- if (err)
- return err;
-
- return now;
-}
-
-static int ideapad_backlight_update_status(struct backlight_device *blightdev)
-{
- struct ideapad_private *priv = bl_get_data(blightdev);
- int err;
-
- guard(mutex)(&priv->vpc_mutex);
-
- err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
- blightdev->props.brightness);
- if (err)
- return err;
-
- err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
- blightdev->props.power != BACKLIGHT_POWER_OFF);
- if (err)
- return err;
-
- return 0;
-}
-
-static const struct backlight_ops ideapad_backlight_ops = {
- .get_brightness = ideapad_backlight_get_brightness,
- .update_status = ideapad_backlight_update_status,
-};
-
-static int ideapad_backlight_init(struct ideapad_private *priv)
-{
- struct backlight_device *blightdev;
- struct backlight_properties props;
- unsigned long max, now, power;
- int err;
-
- err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max);
- if (err)
- return err;
-
- err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
- if (err)
- return err;
-
- err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power);
- if (err)
- return err;
-
- memset(&props, 0, sizeof(props));
-
- props.max_brightness = max;
- props.type = BACKLIGHT_PLATFORM;
-
- blightdev = backlight_device_register("ideapad",
- &priv->platform_device->dev,
- priv,
- &ideapad_backlight_ops,
- &props);
- if (IS_ERR(blightdev)) {
- err = PTR_ERR(blightdev);
- dev_err(&priv->platform_device->dev,
- "Could not register backlight device: %d\n", err);
- return err;
- }
-
- priv->blightdev = blightdev;
- blightdev->props.brightness = now;
- blightdev->props.power = power ? BACKLIGHT_POWER_ON : BACKLIGHT_POWER_OFF;
-
- backlight_update_status(blightdev);
-
- return 0;
-}
-
-static void ideapad_backlight_exit(struct ideapad_private *priv)
-{
- backlight_device_unregister(priv->blightdev);
- priv->blightdev = NULL;
-}
-
-static void ideapad_backlight_notify_power(struct ideapad_private *priv)
-{
- struct backlight_device *blightdev = priv->blightdev;
- unsigned long power;
-
- if (!blightdev)
- return;
-
- guard(mutex)(&priv->vpc_mutex);
-
- if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
- return;
-
- blightdev->props.power = power ? BACKLIGHT_POWER_ON : BACKLIGHT_POWER_OFF;
-}
-
-static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
-{
- unsigned long now;
-
- /* if we control brightness via acpi video driver */
- if (!priv->blightdev)
- scoped_guard(mutex, &priv->vpc_mutex)
- read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
- else
- backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
-}
-
-/*
- * keyboard backlight
- */
-static int ideapad_kbd_bl_check_tristate(int type)
-{
- return (type == KBD_BL_TRISTATE) || (type == KBD_BL_TRISTATE_AUTO);
-}
-
-static int ideapad_kbd_bl_brightness_get(struct ideapad_private *priv)
-{
- unsigned long value;
- int err;
-
- if (ideapad_kbd_bl_check_tristate(priv->kbd_bl.type)) {
- err = eval_kblc(priv->adev->handle,
- FIELD_PREP(KBD_BL_COMMAND_TYPE, priv->kbd_bl.type) |
- KBD_BL_COMMAND_GET,
- &value);
-
- if (err)
- return err;
-
- /* Convert returned value to brightness level */
- value = FIELD_GET(KBD_BL_GET_BRIGHTNESS, value);
-
- /* Off, low or high */
- if (value <= priv->kbd_bl.led.max_brightness)
- return value;
-
- /* Auto, report as off */
- if (value == priv->kbd_bl.led.max_brightness + 1)
- return 0;
-
- /* Unknown value */
- dev_warn(&priv->platform_device->dev,
- "Unknown keyboard backlight value: %lu", value);
- return -EINVAL;
- }
-
- err = eval_hals(priv->adev->handle, &value);
- if (err)
- return err;
-
- return !!test_bit(HALS_KBD_BL_STATE_BIT, &value);
-}
-
-static enum led_brightness ideapad_kbd_bl_led_cdev_brightness_get(struct led_classdev *led_cdev)
-{
- struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
-
- return ideapad_kbd_bl_brightness_get(priv);
-}
-
-static int ideapad_kbd_bl_brightness_set(struct ideapad_private *priv, unsigned int brightness)
-{
- int err;
- unsigned long value;
- int type = priv->kbd_bl.type;
-
- if (ideapad_kbd_bl_check_tristate(type)) {
- if (brightness > priv->kbd_bl.led.max_brightness)
- return -EINVAL;
-
- value = FIELD_PREP(KBD_BL_SET_BRIGHTNESS, brightness) |
- FIELD_PREP(KBD_BL_COMMAND_TYPE, type) |
- KBD_BL_COMMAND_SET;
- err = exec_kblc(priv->adev->handle, value);
- } else {
- err = exec_sals(priv->adev->handle, brightness ? SALS_KBD_BL_ON : SALS_KBD_BL_OFF);
- }
-
- if (err)
- return err;
-
- priv->kbd_bl.last_brightness = brightness;
-
- return 0;
-}
-
-static int ideapad_kbd_bl_led_cdev_brightness_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
-
- return ideapad_kbd_bl_brightness_set(priv, brightness);
-}
-
-static void ideapad_kbd_bl_notify(struct ideapad_private *priv)
-{
- int brightness;
-
- if (!priv->kbd_bl.initialized)
- return;
-
- brightness = ideapad_kbd_bl_brightness_get(priv);
- if (brightness < 0)
- return;
-
- if (brightness == priv->kbd_bl.last_brightness)
- return;
-
- priv->kbd_bl.last_brightness = brightness;
-
- led_classdev_notify_brightness_hw_changed(&priv->kbd_bl.led, brightness);
-}
-
-static int ideapad_kbd_bl_init(struct ideapad_private *priv)
-{
- int brightness, err;
-
- if (!priv->features.kbd_bl)
- return -ENODEV;
-
- if (WARN_ON(priv->kbd_bl.initialized))
- return -EEXIST;
-
- if (ideapad_kbd_bl_check_tristate(priv->kbd_bl.type)) {
- priv->kbd_bl.led.max_brightness = 2;
- } else {
- priv->kbd_bl.led.max_brightness = 1;
- }
-
- brightness = ideapad_kbd_bl_brightness_get(priv);
- if (brightness < 0)
- return brightness;
-
- priv->kbd_bl.last_brightness = brightness;
- priv->kbd_bl.led.name = "platform::" LED_FUNCTION_KBD_BACKLIGHT;
- priv->kbd_bl.led.brightness_get = ideapad_kbd_bl_led_cdev_brightness_get;
- priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set;
- priv->kbd_bl.led.flags = LED_BRIGHT_HW_CHANGED;
-
- err = led_classdev_register(&priv->platform_device->dev, &priv->kbd_bl.led);
- if (err)
- return err;
-
- priv->kbd_bl.initialized = true;
-
- return 0;
-}
-
-static void ideapad_kbd_bl_exit(struct ideapad_private *priv)
-{
- if (!priv->kbd_bl.initialized)
- return;
-
- priv->kbd_bl.initialized = false;
-
- led_classdev_unregister(&priv->kbd_bl.led);
-}
-
-/*
- * FnLock LED
- */
-static enum led_brightness ideapad_fn_lock_led_cdev_get(struct led_classdev *led_cdev)
-{
- struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, fn_lock.led);
-
- return ideapad_fn_lock_get(priv);
-}
-
-static int ideapad_fn_lock_led_cdev_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, fn_lock.led);
-
- return ideapad_fn_lock_set(priv, brightness);
-}
-
-static int ideapad_fn_lock_led_init(struct ideapad_private *priv)
-{
- int brightness, err;
-
- if (!priv->features.fn_lock)
- return -ENODEV;
-
- if (WARN_ON(priv->fn_lock.initialized))
- return -EEXIST;
-
- priv->fn_lock.led.max_brightness = 1;
-
- brightness = ideapad_fn_lock_get(priv);
- if (brightness < 0)
- return brightness;
-
- priv->fn_lock.last_brightness = brightness;
- priv->fn_lock.led.name = "platform::" LED_FUNCTION_FNLOCK;
- priv->fn_lock.led.brightness_get = ideapad_fn_lock_led_cdev_get;
- priv->fn_lock.led.brightness_set_blocking = ideapad_fn_lock_led_cdev_set;
- priv->fn_lock.led.flags = LED_BRIGHT_HW_CHANGED;
-
- err = led_classdev_register(&priv->platform_device->dev, &priv->fn_lock.led);
- if (err)
- return err;
-
- priv->fn_lock.initialized = true;
-
- return 0;
-}
-
-static void ideapad_fn_lock_led_exit(struct ideapad_private *priv)
-{
- if (!priv->fn_lock.initialized)
- return;
-
- priv->fn_lock.initialized = false;
-
- led_classdev_unregister(&priv->fn_lock.led);
-}
-
-/*
- * module init/exit
- */
-static void ideapad_sync_touchpad_state(struct ideapad_private *priv, bool send_events)
-{
- unsigned long value;
- unsigned char param;
- int ret;
-
- /* Without reading from EC touchpad LED doesn't switch state */
- scoped_guard(mutex, &priv->vpc_mutex)
- ret = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value);
- if (ret)
- return;
-
- /*
- * Some IdeaPads don't really turn off touchpad - they only
- * switch the LED state. We (de)activate KBC AUX port to turn
- * touchpad off and on. We send KEY_TOUCHPAD_OFF and
- * KEY_TOUCHPAD_ON to not to get out of sync with LED
- */
- if (priv->features.ctrl_ps2_aux_port)
- i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE : I8042_CMD_AUX_DISABLE);
-
- /*
- * On older models the EC controls the touchpad and toggles it on/off
- * itself, in this case we report KEY_TOUCHPAD_ON/_OFF. Some models do
- * an acpi-notify with VPC bit 5 set on resume, so this function get
- * called with send_events=true on every resume. Therefor if the EC did
- * not toggle, do nothing to avoid sending spurious KEY_TOUCHPAD_TOGGLE.
- */
- if (send_events && value != priv->r_touchpad_val) {
- ideapad_input_report(priv, value ? 67 : 66);
- sysfs_notify(&priv->platform_device->dev.kobj, NULL, "touchpad");
- }
-
- priv->r_touchpad_val = value;
-}
-
-static const struct dmi_system_id ymc_ec_trigger_quirk_dmi_table[] = {
- {
- /* Lenovo Yoga 7 14ARB7 */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_NAME, "82QF"),
- },
- },
- {
- /* Lenovo Yoga 7 14ACN6 */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_NAME, "82N7"),
- },
- },
- { }
-};
-
-static void ideapad_laptop_trigger_ec(void)
-{
- struct ideapad_private *priv;
- int ret;
-
- guard(mutex)(&ideapad_shared_mutex);
-
- priv = ideapad_shared;
- if (!priv)
- return;
-
- if (!priv->features.ymc_ec_trigger)
- return;
-
- scoped_guard(mutex, &priv->vpc_mutex)
- ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_YMC, 1);
- if (ret)
- dev_warn(&priv->platform_device->dev, "Could not write YMC: %d\n", ret);
-}
-
-static int ideapad_laptop_nb_notify(struct notifier_block *nb,
- unsigned long action, void *data)
-{
- switch (action) {
- case IDEAPAD_LAPTOP_YMC_EVENT:
- ideapad_laptop_trigger_ec();
- break;
- }
-
- return 0;
-}
-
-static struct notifier_block ideapad_laptop_notifier = {
- .notifier_call = ideapad_laptop_nb_notify,
-};
-
-static BLOCKING_NOTIFIER_HEAD(ideapad_laptop_chain_head);
-
-int ideapad_laptop_register_notifier(struct notifier_block *nb)
-{
- return blocking_notifier_chain_register(&ideapad_laptop_chain_head, nb);
-}
-EXPORT_SYMBOL_NS_GPL(ideapad_laptop_register_notifier, "IDEAPAD_LAPTOP");
-
-int ideapad_laptop_unregister_notifier(struct notifier_block *nb)
-{
- return blocking_notifier_chain_unregister(&ideapad_laptop_chain_head, nb);
-}
-EXPORT_SYMBOL_NS_GPL(ideapad_laptop_unregister_notifier, "IDEAPAD_LAPTOP");
-
-void ideapad_laptop_call_notifier(unsigned long action, void *data)
-{
- blocking_notifier_call_chain(&ideapad_laptop_chain_head, action, data);
-}
-EXPORT_SYMBOL_NS_GPL(ideapad_laptop_call_notifier, "IDEAPAD_LAPTOP");
-
-static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
-{
- struct ideapad_private *priv = data;
- unsigned long vpc1, vpc2, bit;
-
- scoped_guard(mutex, &priv->vpc_mutex) {
- if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
- return;
-
- if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
- return;
- }
-
- vpc1 = (vpc2 << 8) | vpc1;
-
- for_each_set_bit (bit, &vpc1, 16) {
- switch (bit) {
- case 13:
- case 11:
- case 8:
- case 7:
- case 6:
- ideapad_input_report(priv, bit);
- break;
- case 10:
- /*
- * This event gets send on a Yoga 300-11IBR when the EC
- * believes that the device has changed between laptop/
- * tent/stand/tablet mode. The EC relies on getting
- * angle info from 2 accelerometers through a special
- * windows service calling a DSM on the DUAL250E ACPI-
- * device. Linux does not do this, making the laptop/
- * tent/stand/tablet mode info unreliable, so we simply
- * ignore these events.
- */
- break;
- case 9:
- ideapad_sync_rfk_state(priv);
- break;
- case 5:
- ideapad_sync_touchpad_state(priv, true);
- break;
- case 4:
- ideapad_backlight_notify_brightness(priv);
- break;
- case 3:
- ideapad_input_novokey(priv);
- break;
- case 2:
- ideapad_backlight_notify_power(priv);
- break;
- case KBD_BL_KBLC_CHANGED_EVENT:
- case 1:
- /*
- * Some IdeaPads report event 1 every ~20
- * seconds while on battery power; some
- * report this when changing to/from tablet
- * mode; some report this when the keyboard
- * backlight has changed.
- */
- ideapad_kbd_bl_notify(priv);
- break;
- case 0:
- ideapad_check_special_buttons(priv);
- break;
- default:
- dev_info(&priv->platform_device->dev,
- "Unknown event: %lu\n", bit);
- }
- }
-}
-
-/* On some models we need to call exec_sals(SALS_FNLOCK_ON/OFF) to set the LED */
-static const struct dmi_system_id set_fn_lock_led_list[] = {
- {
- /* https://bugzilla.kernel.org/show_bug.cgi?id=212671 */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion R7000P2020H"),
- }
- },
- {
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion 5 15ARH05"),
- }
- },
- {}
-};
-
-/*
- * Some ideapads have a hardware rfkill switch, but most do not have one.
- * Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill,
- * switch causing ideapad_laptop to wrongly report all radios as hw-blocked.
- * There used to be a long list of DMI ids for models without a hw rfkill
- * switch here, but that resulted in playing whack a mole.
- * More importantly wrongly reporting the wifi radio as hw-blocked, results in
- * non working wifi. Whereas not reporting it hw-blocked, when it actually is
- * hw-blocked results in an empty SSID list, which is a much more benign
- * failure mode.
- * So the default now is the much safer option of assuming there is no
- * hardware rfkill switch. This default also actually matches most hardware,
- * since having a hw rfkill switch is quite rare on modern hardware, so this
- * also leads to a much shorter list.
- */
-static const struct dmi_system_id hw_rfkill_list[] = {
- {}
-};
-
-/*
- * On some models the EC toggles the touchpad muted LED on touchpad toggle
- * hotkey presses, but the EC does not actually disable the touchpad itself.
- * On these models the driver needs to explicitly enable/disable the i8042
- * (PS/2) aux port.
- */
-static const struct dmi_system_id ctrl_ps2_aux_port_list[] = {
- {
- /* Lenovo Ideapad Z570 */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
- },
- },
- {}
-};
-
-static void ideapad_check_features(struct ideapad_private *priv)
-{
- acpi_handle handle = priv->adev->handle;
- unsigned long val;
-
- priv->features.set_fn_lock_led =
- set_fn_lock_led || dmi_check_system(set_fn_lock_led_list);
- priv->features.hw_rfkill_switch =
- hw_rfkill_switch || dmi_check_system(hw_rfkill_list);
- priv->features.ctrl_ps2_aux_port =
- ctrl_ps2_aux_port || dmi_check_system(ctrl_ps2_aux_port_list);
- priv->features.touchpad_ctrl_via_ec = touchpad_ctrl_via_ec;
- priv->features.ymc_ec_trigger =
- ymc_ec_trigger || dmi_check_system(ymc_ec_trigger_quirk_dmi_table);
-
- if (!read_ec_data(handle, VPCCMD_R_FAN, &val))
- priv->features.fan_mode = true;
-
- if (acpi_has_method(handle, "GBMD") && acpi_has_method(handle, "SBMC"))
- priv->features.conservation_mode = true;
-
- if (acpi_has_method(handle, "DYTC"))
- priv->features.dytc = true;
-
- if (acpi_has_method(handle, "HALS") && acpi_has_method(handle, "SALS")) {
- if (!eval_hals(handle, &val)) {
- if (test_bit(HALS_FNLOCK_SUPPORT_BIT, &val))
- priv->features.fn_lock = true;
-
- if (test_bit(HALS_KBD_BL_SUPPORT_BIT, &val)) {
- priv->features.kbd_bl = true;
- priv->kbd_bl.type = KBD_BL_STANDARD;
- }
-
- if (test_bit(HALS_USB_CHARGING_SUPPORT_BIT, &val))
- priv->features.usb_charging = true;
- }
- }
-
- if (acpi_has_method(handle, "KBLC")) {
- if (!eval_kblc(priv->adev->handle, KBD_BL_QUERY_TYPE, &val)) {
- if (val == KBD_BL_TRISTATE_TYPE) {
- priv->features.kbd_bl = true;
- priv->kbd_bl.type = KBD_BL_TRISTATE;
- } else if (val == KBD_BL_TRISTATE_AUTO_TYPE) {
- priv->features.kbd_bl = true;
- priv->kbd_bl.type = KBD_BL_TRISTATE_AUTO;
- } else {
- dev_warn(&priv->platform_device->dev,
- "Unknown keyboard type: %lu",
- val);
- }
- }
- }
-}
-
-#if IS_ENABLED(CONFIG_ACPI_WMI)
-/*
- * WMI driver
- */
-enum ideapad_wmi_event_type {
- IDEAPAD_WMI_EVENT_ESC,
- IDEAPAD_WMI_EVENT_FN_KEYS,
-};
-
-struct ideapad_wmi_private {
- enum ideapad_wmi_event_type event;
-};
-
-static int ideapad_wmi_probe(struct wmi_device *wdev, const void *context)
-{
- struct ideapad_wmi_private *wpriv;
-
- wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL);
- if (!wpriv)
- return -ENOMEM;
-
- *wpriv = *(const struct ideapad_wmi_private *)context;
-
- dev_set_drvdata(&wdev->dev, wpriv);
- return 0;
-}
-
-static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
-{
- struct ideapad_wmi_private *wpriv = dev_get_drvdata(&wdev->dev);
- struct ideapad_private *priv;
-
- guard(mutex)(&ideapad_shared_mutex);
-
- priv = ideapad_shared;
- if (!priv)
- return;
-
- switch (wpriv->event) {
- case IDEAPAD_WMI_EVENT_ESC:
- ideapad_input_report(priv, 128);
- break;
- case IDEAPAD_WMI_EVENT_FN_KEYS:
- if (priv->features.set_fn_lock_led) {
- int brightness = ideapad_fn_lock_get(priv);
-
- if (brightness >= 0) {
- ideapad_fn_lock_set(priv, brightness);
- ideapad_fn_lock_led_notify(priv, brightness);
- }
- }
-
- if (data->type != ACPI_TYPE_INTEGER) {
- dev_warn(&wdev->dev,
- "WMI event data is not an integer\n");
- break;
- }
-
- dev_dbg(&wdev->dev, "WMI fn-key event: 0x%llx\n",
- data->integer.value);
-
- /* performance button triggered by 0x3d */
- if (data->integer.value == 0x3d && priv->dytc) {
- platform_profile_cycle();
- break;
- }
-
- /* 0x02 FnLock, 0x03 Esc */
- if (data->integer.value == 0x02 || data->integer.value == 0x03)
- ideapad_fn_lock_led_notify(priv, data->integer.value == 0x02);
-
- ideapad_input_report(priv,
- data->integer.value | IDEAPAD_WMI_KEY);
-
- break;
- }
-}
-
-static const struct ideapad_wmi_private ideapad_wmi_context_esc = {
- .event = IDEAPAD_WMI_EVENT_ESC
-};
-
-static const struct ideapad_wmi_private ideapad_wmi_context_fn_keys = {
- .event = IDEAPAD_WMI_EVENT_FN_KEYS
-};
-
-static const struct wmi_device_id ideapad_wmi_ids[] = {
- { "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", &ideapad_wmi_context_esc }, /* Yoga 3 */
- { "56322276-8493-4CE8-A783-98C991274F5E", &ideapad_wmi_context_esc }, /* Yoga 700 */
- { "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294", &ideapad_wmi_context_fn_keys }, /* Legion 5 */
- {},
-};
-MODULE_DEVICE_TABLE(wmi, ideapad_wmi_ids);
-
-static struct wmi_driver ideapad_wmi_driver = {
- .driver = {
- .name = "ideapad_wmi",
- },
- .id_table = ideapad_wmi_ids,
- .probe = ideapad_wmi_probe,
- .notify = ideapad_wmi_notify,
-};
-
-static int ideapad_wmi_driver_register(void)
-{
- return wmi_driver_register(&ideapad_wmi_driver);
-}
-
-static void ideapad_wmi_driver_unregister(void)
-{
- return wmi_driver_unregister(&ideapad_wmi_driver);
-}
-
-#else
-static inline int ideapad_wmi_driver_register(void) { return 0; }
-static inline void ideapad_wmi_driver_unregister(void) { }
-#endif
-
-/*
- * ACPI driver
- */
-static int ideapad_acpi_add(struct platform_device *pdev)
-{
- struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
- struct ideapad_private *priv;
- acpi_status status;
- unsigned long cfg;
- int err, i;
-
- if (!adev || eval_int(adev->handle, "_CFG", &cfg))
- return -ENODEV;
-
- priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- dev_set_drvdata(&pdev->dev, priv);
-
- priv->cfg = cfg;
- priv->adev = adev;
- priv->platform_device = pdev;
-
- err = devm_mutex_init(&pdev->dev, &priv->vpc_mutex);
- if (err)
- return err;
-
- ideapad_check_features(priv);
-
- ideapad_debugfs_init(priv);
-
- err = ideapad_input_init(priv);
- if (err)
- goto input_failed;
-
- err = ideapad_kbd_bl_init(priv);
- if (err) {
- if (err != -ENODEV)
- dev_warn(&pdev->dev, "Could not set up keyboard backlight LED: %d\n", err);
- else
- dev_info(&pdev->dev, "Keyboard backlight control not available\n");
- }
-
- err = ideapad_fn_lock_led_init(priv);
- if (err) {
- if (err != -ENODEV)
- dev_warn(&pdev->dev, "Could not set up FnLock LED: %d\n", err);
- else
- dev_info(&pdev->dev, "FnLock control not available\n");
- }
-
- /*
- * On some models without a hw-switch (the yoga 2 13 at least)
- * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
- */
- if (!priv->features.hw_rfkill_switch)
- write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
-
- for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
- if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
- ideapad_register_rfkill(priv, i);
-
- ideapad_sync_rfk_state(priv);
- ideapad_sync_touchpad_state(priv, false);
-
- err = ideapad_dytc_profile_init(priv);
- if (err) {
- if (err != -ENODEV)
- dev_warn(&pdev->dev, "Could not set up DYTC interface: %d\n", err);
- else
- dev_info(&pdev->dev, "DYTC interface is not available\n");
- }
-
- if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
- err = ideapad_backlight_init(priv);
- if (err && err != -ENODEV)
- goto backlight_failed;
- }
-
- status = acpi_install_notify_handler(adev->handle,
- ACPI_DEVICE_NOTIFY,
- ideapad_acpi_notify, priv);
- if (ACPI_FAILURE(status)) {
- err = -EIO;
- goto notification_failed;
- }
-
- err = ideapad_shared_init(priv);
- if (err)
- goto shared_init_failed;
-
- ideapad_laptop_register_notifier(&ideapad_laptop_notifier);
-
- return 0;
-
-shared_init_failed:
- acpi_remove_notify_handler(priv->adev->handle,
- ACPI_DEVICE_NOTIFY,
- ideapad_acpi_notify);
-
-notification_failed:
- ideapad_backlight_exit(priv);
-
-backlight_failed:
- ideapad_dytc_profile_exit(priv);
-
- for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
- ideapad_unregister_rfkill(priv, i);
-
- ideapad_fn_lock_led_exit(priv);
- ideapad_kbd_bl_exit(priv);
- ideapad_input_exit(priv);
-
-input_failed:
- ideapad_debugfs_exit(priv);
-
- return err;
-}
-
-static void ideapad_acpi_remove(struct platform_device *pdev)
-{
- struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
- int i;
-
- ideapad_laptop_unregister_notifier(&ideapad_laptop_notifier);
-
- ideapad_shared_exit(priv);
-
- acpi_remove_notify_handler(priv->adev->handle,
- ACPI_DEVICE_NOTIFY,
- ideapad_acpi_notify);
-
- ideapad_backlight_exit(priv);
- ideapad_dytc_profile_exit(priv);
-
- for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
- ideapad_unregister_rfkill(priv, i);
-
- ideapad_fn_lock_led_exit(priv);
- ideapad_kbd_bl_exit(priv);
- ideapad_input_exit(priv);
- ideapad_debugfs_exit(priv);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int ideapad_acpi_resume(struct device *dev)
-{
- struct ideapad_private *priv = dev_get_drvdata(dev);
-
- ideapad_sync_rfk_state(priv);
- ideapad_sync_touchpad_state(priv, false);
-
- if (priv->dytc)
- dytc_profile_refresh(priv);
-
- return 0;
-}
-#endif
-static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
-
-static const struct acpi_device_id ideapad_device_ids[] = {
- {"VPC2004", 0},
- {"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
-
-static struct platform_driver ideapad_acpi_driver = {
- .probe = ideapad_acpi_add,
- .remove = ideapad_acpi_remove,
- .driver = {
- .name = "ideapad_acpi",
- .pm = &ideapad_pm,
- .acpi_match_table = ACPI_PTR(ideapad_device_ids),
- .dev_groups = ideapad_attribute_groups,
- },
-};
-
-static int __init ideapad_laptop_init(void)
-{
- int err;
-
- err = ideapad_wmi_driver_register();
- if (err)
- return err;
-
- err = platform_driver_register(&ideapad_acpi_driver);
- if (err) {
- ideapad_wmi_driver_unregister();
- return err;
- }
-
- return 0;
-}
-module_init(ideapad_laptop_init)
-
-static void __exit ideapad_laptop_exit(void)
-{
- ideapad_wmi_driver_unregister();
- platform_driver_unregister(&ideapad_acpi_driver);
-}
-module_exit(ideapad_laptop_exit)
-
-MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
-MODULE_DESCRIPTION("IdeaPad ACPI Extras");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * ideapad-laptop.h - Lenovo IdeaPad ACPI Extras
- *
- * Copyright © 2010 Intel Corporation
- * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
- */
-
-#ifndef _IDEAPAD_LAPTOP_H_
-#define _IDEAPAD_LAPTOP_H_
-
-#include <linux/notifier.h>
-
-enum ideapad_laptop_notifier_actions {
- IDEAPAD_LAPTOP_YMC_EVENT,
-};
-
-int ideapad_laptop_register_notifier(struct notifier_block *nb);
-int ideapad_laptop_unregister_notifier(struct notifier_block *nb);
-void ideapad_laptop_call_notifier(unsigned long action, void *data);
-
-#endif /* !_IDEAPAD_LAPTOP_H_ */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Lenovo WMI Camera Button Driver
- *
- * Author: Ai Chao <aichao@kylinos.cn>
- * Copyright (C) 2024 KylinSoft Corporation.
- */
-
-#include <linux/acpi.h>
-#include <linux/device.h>
-#include <linux/input.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/wmi.h>
-#include <linux/cleanup.h>
-
-#define WMI_LENOVO_CAMERABUTTON_EVENT_GUID "50C76F1F-D8E4-D895-0A3D-62F4EA400013"
-
-struct lenovo_wmi_priv {
- struct input_dev *idev;
- struct mutex notify_lock; /* lenovo WMI camera button notify lock */
-};
-
-enum {
- SW_CAMERA_OFF = 0,
- SW_CAMERA_ON = 1,
-};
-
-static int camera_shutter_input_setup(struct wmi_device *wdev, u8 camera_mode)
-{
- struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
- int err;
-
- priv->idev = input_allocate_device();
- if (!priv->idev)
- return -ENOMEM;
-
- priv->idev->name = "Lenovo WMI Camera Button";
- priv->idev->phys = "wmi/input0";
- priv->idev->id.bustype = BUS_HOST;
- priv->idev->dev.parent = &wdev->dev;
-
- input_set_capability(priv->idev, EV_SW, SW_CAMERA_LENS_COVER);
-
- input_report_switch(priv->idev, SW_CAMERA_LENS_COVER,
- camera_mode == SW_CAMERA_ON ? 0 : 1);
- input_sync(priv->idev);
-
- err = input_register_device(priv->idev);
- if (err) {
- input_free_device(priv->idev);
- priv->idev = NULL;
- }
-
- return err;
-}
-
-static void lenovo_wmi_notify(struct wmi_device *wdev, union acpi_object *obj)
-{
- struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
- u8 camera_mode;
-
- if (obj->type != ACPI_TYPE_BUFFER) {
- dev_err(&wdev->dev, "Bad response type %u\n", obj->type);
- return;
- }
-
- if (obj->buffer.length != 1) {
- dev_err(&wdev->dev, "Invalid buffer length %u\n", obj->buffer.length);
- return;
- }
-
- /*
- * obj->buffer.pointer[0] is camera mode:
- * 0 camera close
- * 1 camera open
- */
- camera_mode = obj->buffer.pointer[0];
- if (camera_mode > SW_CAMERA_ON) {
- dev_err(&wdev->dev, "Unknown camera mode %u\n", camera_mode);
- return;
- }
-
- guard(mutex)(&priv->notify_lock);
-
- if (!priv->idev) {
- if (camera_shutter_input_setup(wdev, camera_mode))
- dev_warn(&wdev->dev, "Failed to register input device\n");
- return;
- }
-
- if (camera_mode == SW_CAMERA_ON)
- input_report_switch(priv->idev, SW_CAMERA_LENS_COVER, 0);
- else
- input_report_switch(priv->idev, SW_CAMERA_LENS_COVER, 1);
- input_sync(priv->idev);
-}
-
-static int lenovo_wmi_probe(struct wmi_device *wdev, const void *context)
-{
- struct lenovo_wmi_priv *priv;
-
- priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- dev_set_drvdata(&wdev->dev, priv);
-
- mutex_init(&priv->notify_lock);
-
- return 0;
-}
-
-static void lenovo_wmi_remove(struct wmi_device *wdev)
-{
- struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
-
- if (priv->idev)
- input_unregister_device(priv->idev);
-
- mutex_destroy(&priv->notify_lock);
-}
-
-static const struct wmi_device_id lenovo_wmi_id_table[] = {
- { .guid_string = WMI_LENOVO_CAMERABUTTON_EVENT_GUID },
- { }
-};
-MODULE_DEVICE_TABLE(wmi, lenovo_wmi_id_table);
-
-static struct wmi_driver lenovo_wmi_driver = {
- .driver = {
- .name = "lenovo-wmi-camera",
- .probe_type = PROBE_PREFER_ASYNCHRONOUS,
- },
- .id_table = lenovo_wmi_id_table,
- .no_singleton = true,
- .probe = lenovo_wmi_probe,
- .notify = lenovo_wmi_notify,
- .remove = lenovo_wmi_remove,
-};
-module_wmi_driver(lenovo_wmi_driver);
-
-MODULE_AUTHOR("Ai Chao <aichao@kylinos.cn>");
-MODULE_DESCRIPTION("Lenovo WMI Camera Button Driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Lenovo Super Hotkey Utility WMI extras driver for Ideapad laptop
- *
- * Copyright (C) 2025 Lenovo
- */
-
-#include <linux/cleanup.h>
-#include <linux/dev_printk.h>
-#include <linux/device.h>
-#include <linux/leds.h>
-#include <linux/module.h>
-#include <linux/wmi.h>
-
-/* Lenovo Super Hotkey WMI GUIDs */
-#define LUD_WMI_METHOD_GUID "CE6C0974-0407-4F50-88BA-4FC3B6559AD8"
-
-/* Lenovo Utility Data WMI method_id */
-#define WMI_LUD_GET_SUPPORT 1
-#define WMI_LUD_SET_FEATURE 2
-
-#define WMI_LUD_GET_MICMUTE_LED_VER 20
-#define WMI_LUD_GET_AUDIOMUTE_LED_VER 26
-
-#define WMI_LUD_SUPPORT_MICMUTE_LED_VER 25
-#define WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER 27
-
-/* Input parameters to mute/unmute audio LED and Mic LED */
-struct wmi_led_args {
- u8 id;
- u8 subid;
- u16 value;
-};
-
-/* Values of input parameters to SetFeature of audio LED and Mic LED */
-enum hotkey_set_feature {
- MIC_MUTE_LED_ON = 1,
- MIC_MUTE_LED_OFF = 2,
- AUDIO_MUTE_LED_ON = 4,
- AUDIO_MUTE_LED_OFF = 5,
-};
-
-#define LSH_ACPI_LED_MAX 2
-
-struct lenovo_super_hotkey_wmi_private {
- struct led_classdev cdev[LSH_ACPI_LED_MAX];
- struct wmi_device *led_wdev;
-};
-
-enum mute_led_type {
- MIC_MUTE,
- AUDIO_MUTE,
-};
-
-static int lsh_wmi_mute_led_set(enum mute_led_type led_type, struct led_classdev *led_cdev,
- enum led_brightness brightness)
-
-{
- struct lenovo_super_hotkey_wmi_private *wpriv = container_of(led_cdev,
- struct lenovo_super_hotkey_wmi_private, cdev[led_type]);
- struct wmi_led_args led_arg = {0, 0, 0};
- struct acpi_buffer input;
- acpi_status status;
-
- switch (led_type) {
- case MIC_MUTE:
- led_arg.id = brightness == LED_ON ? MIC_MUTE_LED_ON : MIC_MUTE_LED_OFF;
- break;
- case AUDIO_MUTE:
- led_arg.id = brightness == LED_ON ? AUDIO_MUTE_LED_ON : AUDIO_MUTE_LED_OFF;
- break;
- default:
- return -EINVAL;
- }
-
- input.length = sizeof(led_arg);
- input.pointer = &led_arg;
- status = wmidev_evaluate_method(wpriv->led_wdev, 0, WMI_LUD_SET_FEATURE, &input, NULL);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- return 0;
-}
-
-static int lsh_wmi_audiomute_led_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-
-{
- return lsh_wmi_mute_led_set(AUDIO_MUTE, led_cdev, brightness);
-}
-
-static int lsh_wmi_micmute_led_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- return lsh_wmi_mute_led_set(MIC_MUTE, led_cdev, brightness);
-}
-
-static int lenovo_super_hotkey_wmi_led_init(enum mute_led_type led_type, struct device *dev)
-{
- struct lenovo_super_hotkey_wmi_private *wpriv = dev_get_drvdata(dev);
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_buffer input;
- int led_version, err = 0;
- unsigned int wmiarg;
- acpi_status status;
-
- switch (led_type) {
- case MIC_MUTE:
- wmiarg = WMI_LUD_GET_MICMUTE_LED_VER;
- break;
- case AUDIO_MUTE:
- wmiarg = WMI_LUD_GET_AUDIOMUTE_LED_VER;
- break;
- default:
- return -EINVAL;
- }
-
- input.length = sizeof(wmiarg);
- input.pointer = &wmiarg;
- status = wmidev_evaluate_method(wpriv->led_wdev, 0, WMI_LUD_GET_SUPPORT, &input, &output);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- union acpi_object *obj __free(kfree) = output.pointer;
- if (obj && obj->type == ACPI_TYPE_INTEGER)
- led_version = obj->integer.value;
- else
- return -EIO;
-
- wpriv->cdev[led_type].max_brightness = LED_ON;
- wpriv->cdev[led_type].flags = LED_CORE_SUSPENDRESUME;
-
- switch (led_type) {
- case MIC_MUTE:
- if (led_version != WMI_LUD_SUPPORT_MICMUTE_LED_VER)
- return -EIO;
-
- wpriv->cdev[led_type].name = "platform::micmute";
- wpriv->cdev[led_type].brightness_set_blocking = &lsh_wmi_micmute_led_set;
- wpriv->cdev[led_type].default_trigger = "audio-micmute";
- break;
- case AUDIO_MUTE:
- if (led_version != WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER)
- return -EIO;
-
- wpriv->cdev[led_type].name = "platform::mute";
- wpriv->cdev[led_type].brightness_set_blocking = &lsh_wmi_audiomute_led_set;
- wpriv->cdev[led_type].default_trigger = "audio-mute";
- break;
- default:
- dev_err(dev, "Unknown LED type %d\n", led_type);
- return -EINVAL;
- }
-
- err = devm_led_classdev_register(dev, &wpriv->cdev[led_type]);
- if (err < 0) {
- dev_err(dev, "Could not register mute LED %d : %d\n", led_type, err);
- return err;
- }
- return 0;
-}
-
-static int lenovo_super_hotkey_wmi_leds_setup(struct device *dev)
-{
- int err;
-
- err = lenovo_super_hotkey_wmi_led_init(MIC_MUTE, dev);
- if (err)
- return err;
-
- err = lenovo_super_hotkey_wmi_led_init(AUDIO_MUTE, dev);
- if (err)
- return err;
-
- return 0;
-}
-
-static int lenovo_super_hotkey_wmi_probe(struct wmi_device *wdev, const void *context)
-{
- struct lenovo_super_hotkey_wmi_private *wpriv;
-
- wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL);
- if (!wpriv)
- return -ENOMEM;
-
- dev_set_drvdata(&wdev->dev, wpriv);
- wpriv->led_wdev = wdev;
- return lenovo_super_hotkey_wmi_leds_setup(&wdev->dev);
-}
-
-static const struct wmi_device_id lenovo_super_hotkey_wmi_id_table[] = {
- { LUD_WMI_METHOD_GUID, NULL }, /* Utility data */
- { }
-};
-
-MODULE_DEVICE_TABLE(wmi, lenovo_super_hotkey_wmi_id_table);
-
-static struct wmi_driver lenovo_wmi_hotkey_utilities_driver = {
- .driver = {
- .name = "lenovo_wmi_hotkey_utilities",
- .probe_type = PROBE_PREFER_ASYNCHRONOUS
- },
- .id_table = lenovo_super_hotkey_wmi_id_table,
- .probe = lenovo_super_hotkey_wmi_probe,
- .no_singleton = true,
-};
-
-module_wmi_driver(lenovo_wmi_hotkey_utilities_driver);
-
-MODULE_AUTHOR("Jackie Dong <dongeg1@lenovo.com>");
-MODULE_DESCRIPTION("Lenovo Super Hotkey Utility WMI extras driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * lenovo-ymc.c - Lenovo Yoga Mode Control driver
- *
- * Copyright © 2022 Gergo Koteles <soyer@irl.hu>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/acpi.h>
-#include <linux/dmi.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
-#include <linux/wmi.h>
-#include "ideapad-laptop.h"
-
-#define LENOVO_YMC_EVENT_GUID "06129D99-6083-4164-81AD-F092F9D773A6"
-#define LENOVO_YMC_QUERY_GUID "09B0EE6E-C3FD-4243-8DA1-7911FF80BB8C"
-
-#define LENOVO_YMC_QUERY_INSTANCE 0
-#define LENOVO_YMC_QUERY_METHOD 0x01
-
-static bool force;
-module_param(force, bool, 0444);
-MODULE_PARM_DESC(force, "Force loading on boards without a convertible DMI chassis-type");
-
-static const struct dmi_system_id allowed_chasis_types_dmi_table[] = {
- {
- .matches = {
- DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "31" /* Convertible */),
- },
- },
- {
- .matches = {
- DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "32" /* Detachable */),
- },
- },
- { }
-};
-
-struct lenovo_ymc_private {
- struct input_dev *input_dev;
-};
-
-static const struct key_entry lenovo_ymc_keymap[] = {
- /* Ignore the uninitialized state */
- { KE_IGNORE, 0x00 },
- /* Laptop */
- { KE_SW, 0x01, { .sw = { SW_TABLET_MODE, 0 } } },
- /* Tablet */
- { KE_SW, 0x02, { .sw = { SW_TABLET_MODE, 1 } } },
- /* Drawing Board */
- { KE_SW, 0x03, { .sw = { SW_TABLET_MODE, 1 } } },
- /* Tent */
- { KE_SW, 0x04, { .sw = { SW_TABLET_MODE, 1 } } },
- { KE_END },
-};
-
-static void lenovo_ymc_notify(struct wmi_device *wdev, union acpi_object *data)
-{
- struct lenovo_ymc_private *priv = dev_get_drvdata(&wdev->dev);
- u32 input_val = 0;
- struct acpi_buffer input = { sizeof(input_val), &input_val };
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- acpi_status status;
- int code;
-
- status = wmi_evaluate_method(LENOVO_YMC_QUERY_GUID,
- LENOVO_YMC_QUERY_INSTANCE,
- LENOVO_YMC_QUERY_METHOD,
- &input, &output);
-
- if (ACPI_FAILURE(status)) {
- dev_warn(&wdev->dev,
- "Failed to evaluate query method: %s\n",
- acpi_format_exception(status));
- return;
- }
-
- obj = output.pointer;
-
- if (obj->type != ACPI_TYPE_INTEGER) {
- dev_warn(&wdev->dev,
- "WMI event data is not an integer\n");
- goto free_obj;
- }
- code = obj->integer.value;
-
- if (!sparse_keymap_report_event(priv->input_dev, code, 1, true))
- dev_warn(&wdev->dev, "Unknown key %d pressed\n", code);
-
-free_obj:
- kfree(obj);
- ideapad_laptop_call_notifier(IDEAPAD_LAPTOP_YMC_EVENT, &code);
-}
-
-static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx)
-{
- struct lenovo_ymc_private *priv;
- struct input_dev *input_dev;
- int err;
-
- if (!dmi_check_system(allowed_chasis_types_dmi_table)) {
- if (force)
- dev_info(&wdev->dev, "Force loading Lenovo YMC support\n");
- else
- return -ENODEV;
- }
-
- priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- input_dev = devm_input_allocate_device(&wdev->dev);
- if (!input_dev)
- return -ENOMEM;
-
- input_dev->name = "Lenovo Yoga Tablet Mode Control switch";
- input_dev->phys = LENOVO_YMC_EVENT_GUID "/input0";
- input_dev->id.bustype = BUS_HOST;
- input_dev->dev.parent = &wdev->dev;
- err = sparse_keymap_setup(input_dev, lenovo_ymc_keymap, NULL);
- if (err) {
- dev_err(&wdev->dev,
- "Could not set up input device keymap: %d\n", err);
- return err;
- }
-
- err = input_register_device(input_dev);
- if (err) {
- dev_err(&wdev->dev,
- "Could not register input device: %d\n", err);
- return err;
- }
-
- priv->input_dev = input_dev;
- dev_set_drvdata(&wdev->dev, priv);
-
- /* Report the state for the first time on probe */
- lenovo_ymc_notify(wdev, NULL);
- return 0;
-}
-
-static const struct wmi_device_id lenovo_ymc_wmi_id_table[] = {
- { .guid_string = LENOVO_YMC_EVENT_GUID },
- { }
-};
-MODULE_DEVICE_TABLE(wmi, lenovo_ymc_wmi_id_table);
-
-static struct wmi_driver lenovo_ymc_driver = {
- .driver = {
- .name = "lenovo-ymc",
- },
- .id_table = lenovo_ymc_wmi_id_table,
- .probe = lenovo_ymc_probe,
- .notify = lenovo_ymc_notify,
-};
-
-module_wmi_driver(lenovo_ymc_driver);
-
-MODULE_AUTHOR("Gergo Koteles <soyer@irl.hu>");
-MODULE_DESCRIPTION("Lenovo Yoga Mode Control driver");
-MODULE_LICENSE("GPL");
-MODULE_IMPORT_NS("IDEAPAD_LAPTOP");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Support for the custom fast charging protocol found on the Lenovo Yoga
- * Tablet 2 1380F / 1380L models.
- *
- * Copyright (C) 2024 Hans de Goede <hansg@kernel.org>
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/extcon.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/notifier.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/pinctrl/machine.h>
-#include <linux/platform_device.h>
-#include <linux/serdev.h>
-#include <linux/time.h>
-#include <linux/types.h>
-#include <linux/workqueue.h>
-#include "serdev_helpers.h"
-
-#define YT2_1380_FC_PDEV_NAME "lenovo-yoga-tab2-pro-1380-fastcharger"
-#define YT2_1380_FC_SERDEV_CTRL "serial0"
-#define YT2_1380_FC_SERDEV_NAME "serial0-0"
-#define YT2_1380_FC_EXTCON_NAME "i2c-lc824206xa"
-
-#define YT2_1380_FC_MAX_TRIES 5
-#define YT2_1380_FC_PIN_SW_DELAY_US (10 * USEC_PER_MSEC)
-#define YT2_1380_FC_UART_DRAIN_DELAY_US (50 * USEC_PER_MSEC)
-#define YT2_1380_FC_VOLT_SW_DELAY_US (1000 * USEC_PER_MSEC)
-
-struct yt2_1380_fc {
- struct device *dev;
- struct pinctrl *pinctrl;
- struct pinctrl_state *gpio_state;
- struct pinctrl_state *uart_state;
- struct gpio_desc *uart3_txd;
- struct gpio_desc *uart3_rxd;
- struct extcon_dev *extcon;
- struct notifier_block nb;
- struct work_struct work;
- bool fast_charging;
-};
-
-static int yt2_1380_fc_set_gpio_mode(struct yt2_1380_fc *fc, bool enable)
-{
- struct pinctrl_state *state = enable ? fc->gpio_state : fc->uart_state;
- int ret;
-
- ret = pinctrl_select_state(fc->pinctrl, state);
- if (ret) {
- dev_err(fc->dev, "Error %d setting pinctrl state\n", ret);
- return ret;
- }
-
- fsleep(YT2_1380_FC_PIN_SW_DELAY_US);
- return 0;
-}
-
-static bool yt2_1380_fc_dedicated_charger_connected(struct yt2_1380_fc *fc)
-{
- return extcon_get_state(fc->extcon, EXTCON_CHG_USB_DCP) > 0;
-}
-
-static bool yt2_1380_fc_fast_charger_connected(struct yt2_1380_fc *fc)
-{
- return extcon_get_state(fc->extcon, EXTCON_CHG_USB_FAST) > 0;
-}
-
-static void yt2_1380_fc_worker(struct work_struct *work)
-{
- struct yt2_1380_fc *fc = container_of(work, struct yt2_1380_fc, work);
- int i, ret;
-
- /* Do nothing if already fast charging */
- if (yt2_1380_fc_fast_charger_connected(fc))
- return;
-
- for (i = 0; i < YT2_1380_FC_MAX_TRIES; i++) {
- /* Set pins to UART mode (for charger disconnect and retries) */
- ret = yt2_1380_fc_set_gpio_mode(fc, false);
- if (ret)
- return;
-
- /* Only try 12V charging if a dedicated charger is detected */
- if (!yt2_1380_fc_dedicated_charger_connected(fc))
- return;
-
- /* Send the command to switch to 12V charging */
- ret = serdev_device_write_buf(to_serdev_device(fc->dev), "SC", strlen("SC"));
- if (ret != strlen("SC")) {
- dev_err(fc->dev, "Error %d writing to uart\n", ret);
- return;
- }
-
- fsleep(YT2_1380_FC_UART_DRAIN_DELAY_US);
-
- /* Re-check a charger is still connected */
- if (!yt2_1380_fc_dedicated_charger_connected(fc))
- return;
-
- /*
- * Now switch the lines to GPIO (output, high). The charger
- * expects the lines being driven high after the command.
- * Presumably this is used to detect the tablet getting
- * unplugged (to switch back to 5V output on unplug).
- */
- ret = yt2_1380_fc_set_gpio_mode(fc, true);
- if (ret)
- return;
-
- fsleep(YT2_1380_FC_VOLT_SW_DELAY_US);
-
- if (yt2_1380_fc_fast_charger_connected(fc))
- return; /* Success */
- }
-
- dev_dbg(fc->dev, "Failed to switch to 12V charging (not the original charger?)\n");
- /* Failed to enable 12V fast charging, reset pins to default UART mode */
- yt2_1380_fc_set_gpio_mode(fc, false);
-}
-
-static int yt2_1380_fc_extcon_evt(struct notifier_block *nb,
- unsigned long event, void *param)
-{
- struct yt2_1380_fc *fc = container_of(nb, struct yt2_1380_fc, nb);
-
- schedule_work(&fc->work);
- return NOTIFY_OK;
-}
-
-static size_t yt2_1380_fc_receive(struct serdev_device *serdev, const u8 *data, size_t len)
-{
- /*
- * Since the USB data lines are shorted for DCP detection, echos of
- * the "SC" command send in yt2_1380_fc_worker() will be received.
- */
- dev_dbg(&serdev->dev, "recv: %*ph\n", (int)len, data);
- return len;
-}
-
-static const struct serdev_device_ops yt2_1380_fc_serdev_ops = {
- .receive_buf = yt2_1380_fc_receive,
- .write_wakeup = serdev_device_write_wakeup,
-};
-
-static int yt2_1380_fc_serdev_probe(struct serdev_device *serdev)
-{
- struct device *dev = &serdev->dev;
- struct yt2_1380_fc *fc;
- int ret;
-
- fc = devm_kzalloc(dev, sizeof(*fc), GFP_KERNEL);
- if (!fc)
- return -ENOMEM;
-
- fc->dev = dev;
- fc->nb.notifier_call = yt2_1380_fc_extcon_evt;
- INIT_WORK(&fc->work, yt2_1380_fc_worker);
-
- /*
- * Do this first since it may return -EPROBE_DEFER.
- * There is no extcon_put(), so there is no need to free this.
- */
- fc->extcon = extcon_get_extcon_dev(YT2_1380_FC_EXTCON_NAME);
- if (IS_ERR(fc->extcon))
- return dev_err_probe(dev, PTR_ERR(fc->extcon), "getting extcon\n");
-
- fc->pinctrl = devm_pinctrl_get(dev);
- if (IS_ERR(fc->pinctrl))
- return dev_err_probe(dev, PTR_ERR(fc->pinctrl), "getting pinctrl\n");
-
- /*
- * To switch the UART3 pins connected to the USB data lines between
- * UART and GPIO modes.
- */
- fc->gpio_state = pinctrl_lookup_state(fc->pinctrl, "uart3_gpio");
- fc->uart_state = pinctrl_lookup_state(fc->pinctrl, "uart3_uart");
- if (IS_ERR(fc->gpio_state) || IS_ERR(fc->uart_state))
- return dev_err_probe(dev, -EINVAL, "getting pinctrl states\n");
-
- ret = yt2_1380_fc_set_gpio_mode(fc, true);
- if (ret)
- return ret;
-
- fc->uart3_txd = devm_gpiod_get(dev, "uart3_txd", GPIOD_OUT_HIGH);
- if (IS_ERR(fc->uart3_txd))
- return dev_err_probe(dev, PTR_ERR(fc->uart3_txd), "getting uart3_txd gpio\n");
-
- fc->uart3_rxd = devm_gpiod_get(dev, "uart3_rxd", GPIOD_OUT_HIGH);
- if (IS_ERR(fc->uart3_rxd))
- return dev_err_probe(dev, PTR_ERR(fc->uart3_rxd), "getting uart3_rxd gpio\n");
-
- ret = yt2_1380_fc_set_gpio_mode(fc, false);
- if (ret)
- return ret;
-
- serdev_device_set_drvdata(serdev, fc);
- serdev_device_set_client_ops(serdev, &yt2_1380_fc_serdev_ops);
-
- ret = devm_serdev_device_open(dev, serdev);
- if (ret)
- return dev_err_probe(dev, ret, "opening UART device\n");
-
- serdev_device_set_baudrate(serdev, 600);
- serdev_device_set_flow_control(serdev, false);
-
- ret = devm_extcon_register_notifier_all(dev, fc->extcon, &fc->nb);
- if (ret)
- return dev_err_probe(dev, ret, "registering extcon notifier\n");
-
- /* In case the extcon already has detected a DCP charger */
- schedule_work(&fc->work);
-
- return 0;
-}
-
-static struct serdev_device_driver yt2_1380_fc_serdev_driver = {
- .probe = yt2_1380_fc_serdev_probe,
- .driver = {
- .name = KBUILD_MODNAME,
- },
-};
-
-static const struct pinctrl_map yt2_1380_fc_pinctrl_map[] = {
- PIN_MAP_MUX_GROUP(YT2_1380_FC_SERDEV_NAME, "uart3_uart",
- "INT33FC:00", "uart3_grp", "uart"),
- PIN_MAP_MUX_GROUP(YT2_1380_FC_SERDEV_NAME, "uart3_gpio",
- "INT33FC:00", "uart3_grp_gpio", "gpio"),
-};
-
-static int yt2_1380_fc_pdev_probe(struct platform_device *pdev)
-{
- struct serdev_device *serdev;
- struct device *ctrl_dev;
- int ret;
-
- /* Register pinctrl mappings for setting the UART3 pins mode */
- ret = pinctrl_register_mappings(yt2_1380_fc_pinctrl_map,
- ARRAY_SIZE(yt2_1380_fc_pinctrl_map));
- if (ret)
- return ret;
-
- /* And create the serdev to talk to the charger over the UART3 pins */
- ctrl_dev = get_serdev_controller("PNP0501", "1", 0, YT2_1380_FC_SERDEV_CTRL);
- if (IS_ERR(ctrl_dev)) {
- ret = PTR_ERR(ctrl_dev);
- goto out_pinctrl_unregister_mappings;
- }
-
- serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
- put_device(ctrl_dev);
- if (!serdev) {
- ret = -ENOMEM;
- goto out_pinctrl_unregister_mappings;
- }
-
- ret = serdev_device_add(serdev);
- if (ret) {
- dev_err_probe(&pdev->dev, ret, "adding serdev\n");
- serdev_device_put(serdev);
- goto out_pinctrl_unregister_mappings;
- }
-
- /*
- * serdev device <-> driver matching relies on OF or ACPI matches and
- * neither is available here, manually bind the driver.
- */
- ret = device_driver_attach(&yt2_1380_fc_serdev_driver.driver, &serdev->dev);
- if (ret) {
- /* device_driver_attach() maps EPROBE_DEFER to EAGAIN, map it back */
- ret = (ret == -EAGAIN) ? -EPROBE_DEFER : ret;
- dev_err_probe(&pdev->dev, ret, "attaching serdev driver\n");
- goto out_serdev_device_remove;
- }
-
- /* So that yt2_1380_fc_pdev_remove() can remove the serdev */
- platform_set_drvdata(pdev, serdev);
- return 0;
-
-out_serdev_device_remove:
- serdev_device_remove(serdev);
-out_pinctrl_unregister_mappings:
- pinctrl_unregister_mappings(yt2_1380_fc_pinctrl_map);
- return ret;
-}
-
-static void yt2_1380_fc_pdev_remove(struct platform_device *pdev)
-{
- struct serdev_device *serdev = platform_get_drvdata(pdev);
-
- serdev_device_remove(serdev);
- pinctrl_unregister_mappings(yt2_1380_fc_pinctrl_map);
-}
-
-static struct platform_driver yt2_1380_fc_pdev_driver = {
- .probe = yt2_1380_fc_pdev_probe,
- .remove = yt2_1380_fc_pdev_remove,
- .driver = {
- .name = YT2_1380_FC_PDEV_NAME,
- .probe_type = PROBE_PREFER_ASYNCHRONOUS,
- },
-};
-
-static int __init yt2_1380_fc_module_init(void)
-{
- int ret;
-
- /*
- * serdev driver MUST be registered first because pdev driver calls
- * device_driver_attach() on the serdev, serdev-driver pair.
- */
- ret = serdev_device_driver_register(&yt2_1380_fc_serdev_driver);
- if (ret)
- return ret;
-
- ret = platform_driver_register(&yt2_1380_fc_pdev_driver);
- if (ret)
- serdev_device_driver_unregister(&yt2_1380_fc_serdev_driver);
-
- return ret;
-}
-module_init(yt2_1380_fc_module_init);
-
-static void __exit yt2_1380_fc_module_exit(void)
-{
- platform_driver_unregister(&yt2_1380_fc_pdev_driver);
- serdev_device_driver_unregister(&yt2_1380_fc_serdev_driver);
-}
-module_exit(yt2_1380_fc_module_exit);
-
-MODULE_ALIAS("platform:" YT2_1380_FC_PDEV_NAME);
-MODULE_DESCRIPTION("Lenovo Yoga Tablet 2 1380 fast charge driver");
-MODULE_AUTHOR("Hans de Goede <hansg@kernel.org>");
-MODULE_LICENSE("GPL");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Platform driver for Lenovo Yoga Book YB1-X90F/L tablets (Android model)
- * WMI driver for Lenovo Yoga Book YB1-X91F/L tablets (Windows model)
- *
- * The keyboard half of the YB1 models can function as both a capacitive
- * touch keyboard or as a Wacom digitizer, but not at the same time.
- *
- * This driver takes care of switching between the 2 functions.
- *
- * Copyright 2023 Hans de Goede <hansg@kernel.org>
- */
-
-#include <linux/acpi.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio/machine.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/leds.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pwm.h>
-#include <linux/wmi.h>
-#include <linux/workqueue.h>
-
-#define YB_MBTN_EVENT_GUID "243FEC1D-1963-41C1-8100-06A9D82A94B4"
-
-#define YB_KBD_BL_DEFAULT 128
-#define YB_KBD_BL_MAX 255
-#define YB_KBD_BL_PWM_PERIOD 13333
-
-#define YB_PDEV_NAME "yogabook-touch-kbd-digitizer-switch"
-
-/* flags */
-enum {
- YB_KBD_IS_ON,
- YB_DIGITIZER_IS_ON,
- YB_DIGITIZER_MODE,
- YB_TABLET_MODE,
- YB_SUSPENDED,
-};
-
-struct yogabook_data {
- struct device *dev;
- struct acpi_device *kbd_adev;
- struct acpi_device *dig_adev;
- struct device *kbd_dev;
- struct device *dig_dev;
- struct led_classdev *pen_led;
- struct gpio_desc *pen_touch_event;
- struct gpio_desc *kbd_bl_led_enable;
- struct gpio_desc *backside_hall_gpio;
- struct pwm_device *kbd_bl_pwm;
- int (*set_kbd_backlight)(struct yogabook_data *data, uint8_t level);
- int pen_touch_irq;
- int backside_hall_irq;
- struct work_struct work;
- struct led_classdev kbd_bl_led;
- unsigned long flags;
- uint8_t brightness;
-};
-
-static void yogabook_work(struct work_struct *work)
-{
- struct yogabook_data *data = container_of(work, struct yogabook_data, work);
- bool kbd_on, digitizer_on;
- int r;
-
- if (test_bit(YB_SUSPENDED, &data->flags))
- return;
-
- if (test_bit(YB_TABLET_MODE, &data->flags)) {
- kbd_on = false;
- digitizer_on = false;
- } else if (test_bit(YB_DIGITIZER_MODE, &data->flags)) {
- digitizer_on = true;
- kbd_on = false;
- } else {
- kbd_on = true;
- digitizer_on = false;
- }
-
- if (!kbd_on && test_bit(YB_KBD_IS_ON, &data->flags)) {
- /*
- * Must be done before releasing the keyboard touchscreen driver,
- * so that the keyboard touchscreen dev is still in D0.
- */
- data->set_kbd_backlight(data, 0);
- device_release_driver(data->kbd_dev);
- clear_bit(YB_KBD_IS_ON, &data->flags);
- }
-
- if (!digitizer_on && test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
- led_set_brightness(data->pen_led, LED_OFF);
- device_release_driver(data->dig_dev);
- clear_bit(YB_DIGITIZER_IS_ON, &data->flags);
- }
-
- if (kbd_on && !test_bit(YB_KBD_IS_ON, &data->flags)) {
- r = device_reprobe(data->kbd_dev);
- if (r)
- dev_warn(data->dev, "Reprobe of keyboard touchscreen failed: %d\n", r);
-
- data->set_kbd_backlight(data, data->brightness);
- set_bit(YB_KBD_IS_ON, &data->flags);
- }
-
- if (digitizer_on && !test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
- r = device_reprobe(data->dig_dev);
- if (r)
- dev_warn(data->dev, "Reprobe of digitizer failed: %d\n", r);
-
- led_set_brightness(data->pen_led, LED_FULL);
- set_bit(YB_DIGITIZER_IS_ON, &data->flags);
- }
-}
-
-static void yogabook_toggle_digitizer_mode(struct yogabook_data *data)
-{
- if (test_bit(YB_SUSPENDED, &data->flags))
- return;
-
- if (test_bit(YB_DIGITIZER_MODE, &data->flags))
- clear_bit(YB_DIGITIZER_MODE, &data->flags);
- else
- set_bit(YB_DIGITIZER_MODE, &data->flags);
-
- /*
- * We are called from the ACPI core and the driver [un]binding which is
- * done also needs ACPI functions, use a workqueue to avoid deadlocking.
- */
- schedule_work(&data->work);
-}
-
-static irqreturn_t yogabook_backside_hall_irq(int irq, void *_data)
-{
- struct yogabook_data *data = _data;
-
- if (gpiod_get_value(data->backside_hall_gpio))
- set_bit(YB_TABLET_MODE, &data->flags);
- else
- clear_bit(YB_TABLET_MODE, &data->flags);
-
- schedule_work(&data->work);
-
- return IRQ_HANDLED;
-}
-
-#define kbd_led_to_yogabook(cdev) container_of(cdev, struct yogabook_data, kbd_bl_led)
-
-static enum led_brightness kbd_brightness_get(struct led_classdev *cdev)
-{
- struct yogabook_data *data = kbd_led_to_yogabook(cdev);
-
- return data->brightness;
-}
-
-static int kbd_brightness_set(struct led_classdev *cdev,
- enum led_brightness value)
-{
- struct yogabook_data *data = kbd_led_to_yogabook(cdev);
-
- if ((value < 0) || (value > YB_KBD_BL_MAX))
- return -EINVAL;
-
- data->brightness = value;
-
- if (!test_bit(YB_KBD_IS_ON, &data->flags))
- return 0;
-
- return data->set_kbd_backlight(data, data->brightness);
-}
-
-static struct gpiod_lookup_table yogabook_gpios = {
- .table = {
- GPIO_LOOKUP("INT33FF:02", 18, "backside_hall_sw", GPIO_ACTIVE_LOW),
- {}
- },
-};
-
-static struct led_lookup_data yogabook_pen_led = {
- .provider = "platform::indicator",
- .con_id = "pen-icon-led",
-};
-
-static int yogabook_probe(struct device *dev, struct yogabook_data *data,
- const char *kbd_bl_led_name)
-{
- int r;
-
- data->dev = dev;
- data->brightness = YB_KBD_BL_DEFAULT;
- set_bit(YB_KBD_IS_ON, &data->flags);
- set_bit(YB_DIGITIZER_IS_ON, &data->flags);
- INIT_WORK(&data->work, yogabook_work);
-
- yogabook_pen_led.dev_id = dev_name(dev);
- led_add_lookup(&yogabook_pen_led);
- data->pen_led = devm_led_get(dev, "pen-icon-led");
- led_remove_lookup(&yogabook_pen_led);
-
- if (IS_ERR(data->pen_led))
- return dev_err_probe(dev, PTR_ERR(data->pen_led), "Getting pen icon LED\n");
-
- yogabook_gpios.dev_id = dev_name(dev);
- gpiod_add_lookup_table(&yogabook_gpios);
- data->backside_hall_gpio = devm_gpiod_get(dev, "backside_hall_sw", GPIOD_IN);
- gpiod_remove_lookup_table(&yogabook_gpios);
-
- if (IS_ERR(data->backside_hall_gpio))
- return dev_err_probe(dev, PTR_ERR(data->backside_hall_gpio),
- "Getting backside_hall_sw GPIO\n");
-
- r = gpiod_to_irq(data->backside_hall_gpio);
- if (r < 0)
- return dev_err_probe(dev, r, "Getting backside_hall_sw IRQ\n");
-
- data->backside_hall_irq = r;
-
- /* Set default brightness before enabling the IRQ */
- data->set_kbd_backlight(data, YB_KBD_BL_DEFAULT);
-
- r = request_irq(data->backside_hall_irq, yogabook_backside_hall_irq,
- IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
- "backside_hall_sw", data);
- if (r)
- return dev_err_probe(dev, r, "Requesting backside_hall_sw IRQ\n");
-
- schedule_work(&data->work);
-
- data->kbd_bl_led.name = kbd_bl_led_name;
- data->kbd_bl_led.brightness_set_blocking = kbd_brightness_set;
- data->kbd_bl_led.brightness_get = kbd_brightness_get;
- data->kbd_bl_led.max_brightness = YB_KBD_BL_MAX;
-
- r = devm_led_classdev_register(dev, &data->kbd_bl_led);
- if (r < 0) {
- dev_err_probe(dev, r, "Registering backlight LED device\n");
- goto error_free_irq;
- }
-
- dev_set_drvdata(dev, data);
- return 0;
-
-error_free_irq:
- free_irq(data->backside_hall_irq, data);
- cancel_work_sync(&data->work);
- return r;
-}
-
-static void yogabook_remove(struct yogabook_data *data)
-{
- int r = 0;
-
- free_irq(data->backside_hall_irq, data);
- cancel_work_sync(&data->work);
-
- if (!test_bit(YB_KBD_IS_ON, &data->flags))
- r |= device_reprobe(data->kbd_dev);
-
- if (!test_bit(YB_DIGITIZER_IS_ON, &data->flags))
- r |= device_reprobe(data->dig_dev);
-
- if (r)
- dev_warn(data->dev, "Reprobe of devices failed\n");
-}
-
-static int yogabook_suspend(struct device *dev)
-{
- struct yogabook_data *data = dev_get_drvdata(dev);
-
- set_bit(YB_SUSPENDED, &data->flags);
- flush_work(&data->work);
-
- if (test_bit(YB_KBD_IS_ON, &data->flags))
- data->set_kbd_backlight(data, 0);
-
- return 0;
-}
-
-static int yogabook_resume(struct device *dev)
-{
- struct yogabook_data *data = dev_get_drvdata(dev);
-
- if (test_bit(YB_KBD_IS_ON, &data->flags))
- data->set_kbd_backlight(data, data->brightness);
-
- clear_bit(YB_SUSPENDED, &data->flags);
-
- /* Check for YB_TABLET_MODE changes made during suspend */
- schedule_work(&data->work);
-
- return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(yogabook_pm_ops, yogabook_suspend, yogabook_resume);
-
-/********** WMI driver code **********/
-
-/*
- * To control keyboard backlight, call the method KBLC() of the TCS1 ACPI
- * device (Goodix touchpad acts as virtual sensor keyboard).
- */
-static int yogabook_wmi_set_kbd_backlight(struct yogabook_data *data,
- uint8_t level)
-{
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_object_list input;
- union acpi_object param;
- acpi_status status;
-
- dev_dbg(data->dev, "Set KBLC level to %u\n", level);
-
- /* Ensure keyboard touchpad is on before we call KBLC() */
- acpi_device_set_power(data->kbd_adev, ACPI_STATE_D0);
-
- input.count = 1;
- input.pointer = ¶m;
-
- param.type = ACPI_TYPE_INTEGER;
- param.integer.value = YB_KBD_BL_MAX - level;
-
- status = acpi_evaluate_object(acpi_device_handle(data->kbd_adev), "KBLC",
- &input, &output);
- if (ACPI_FAILURE(status)) {
- dev_err(data->dev, "Failed to call KBLC method: 0x%x\n", status);
- return status;
- }
-
- kfree(output.pointer);
- return 0;
-}
-
-static int yogabook_wmi_probe(struct wmi_device *wdev, const void *context)
-{
- struct device *dev = &wdev->dev;
- struct yogabook_data *data;
- int r;
-
- data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- data->kbd_adev = acpi_dev_get_first_match_dev("GDIX1001", NULL, -1);
- if (!data->kbd_adev)
- return dev_err_probe(dev, -ENODEV, "Cannot find the touchpad device in ACPI tables\n");
-
- data->dig_adev = acpi_dev_get_first_match_dev("WCOM0019", NULL, -1);
- if (!data->dig_adev) {
- r = dev_err_probe(dev, -ENODEV, "Cannot find the digitizer device in ACPI tables\n");
- goto error_put_devs;
- }
-
- data->kbd_dev = get_device(acpi_get_first_physical_node(data->kbd_adev));
- if (!data->kbd_dev || !data->kbd_dev->driver) {
- r = -EPROBE_DEFER;
- goto error_put_devs;
- }
-
- data->dig_dev = get_device(acpi_get_first_physical_node(data->dig_adev));
- if (!data->dig_dev || !data->dig_dev->driver) {
- r = -EPROBE_DEFER;
- goto error_put_devs;
- }
-
- data->set_kbd_backlight = yogabook_wmi_set_kbd_backlight;
-
- r = yogabook_probe(dev, data, "ybwmi::kbd_backlight");
- if (r)
- goto error_put_devs;
-
- return 0;
-
-error_put_devs:
- put_device(data->dig_dev);
- put_device(data->kbd_dev);
- acpi_dev_put(data->dig_adev);
- acpi_dev_put(data->kbd_adev);
- return r;
-}
-
-static void yogabook_wmi_remove(struct wmi_device *wdev)
-{
- struct yogabook_data *data = dev_get_drvdata(&wdev->dev);
-
- yogabook_remove(data);
-
- put_device(data->dig_dev);
- put_device(data->kbd_dev);
- acpi_dev_put(data->dig_adev);
- acpi_dev_put(data->kbd_adev);
-}
-
-static void yogabook_wmi_notify(struct wmi_device *wdev, union acpi_object *dummy)
-{
- yogabook_toggle_digitizer_mode(dev_get_drvdata(&wdev->dev));
-}
-
-static const struct wmi_device_id yogabook_wmi_id_table[] = {
- {
- .guid_string = YB_MBTN_EVENT_GUID,
- },
- { } /* Terminating entry */
-};
-MODULE_DEVICE_TABLE(wmi, yogabook_wmi_id_table);
-
-static struct wmi_driver yogabook_wmi_driver = {
- .driver = {
- .name = "yogabook-wmi",
- .pm = pm_sleep_ptr(&yogabook_pm_ops),
- },
- .no_notify_data = true,
- .id_table = yogabook_wmi_id_table,
- .probe = yogabook_wmi_probe,
- .remove = yogabook_wmi_remove,
- .notify = yogabook_wmi_notify,
-};
-
-/********** platform driver code **********/
-
-static struct gpiod_lookup_table yogabook_pdev_gpios = {
- .dev_id = YB_PDEV_NAME,
- .table = {
- GPIO_LOOKUP("INT33FF:00", 95, "pen_touch_event", GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP("INT33FF:03", 52, "enable_keyboard_led", GPIO_ACTIVE_HIGH),
- {}
- },
-};
-
-static int yogabook_pdev_set_kbd_backlight(struct yogabook_data *data, u8 level)
-{
- struct pwm_state state = {
- .period = YB_KBD_BL_PWM_PERIOD,
- .duty_cycle = YB_KBD_BL_PWM_PERIOD * level / YB_KBD_BL_MAX,
- .enabled = level,
- };
-
- pwm_apply_might_sleep(data->kbd_bl_pwm, &state);
- gpiod_set_value(data->kbd_bl_led_enable, level ? 1 : 0);
- return 0;
-}
-
-static irqreturn_t yogabook_pen_touch_irq(int irq, void *data)
-{
- yogabook_toggle_digitizer_mode(data);
- return IRQ_HANDLED;
-}
-
-static int yogabook_pdev_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct yogabook_data *data;
- int r;
-
- data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
- if (data == NULL)
- return -ENOMEM;
-
- data->kbd_dev = bus_find_device_by_name(&i2c_bus_type, NULL, "i2c-goodix_ts");
- if (!data->kbd_dev || !data->kbd_dev->driver) {
- r = -EPROBE_DEFER;
- goto error_put_devs;
- }
-
- data->dig_dev = bus_find_device_by_name(&i2c_bus_type, NULL, "i2c-wacom");
- if (!data->dig_dev || !data->dig_dev->driver) {
- r = -EPROBE_DEFER;
- goto error_put_devs;
- }
-
- gpiod_add_lookup_table(&yogabook_pdev_gpios);
- data->pen_touch_event = devm_gpiod_get(dev, "pen_touch_event", GPIOD_IN);
- data->kbd_bl_led_enable = devm_gpiod_get(dev, "enable_keyboard_led", GPIOD_OUT_HIGH);
- gpiod_remove_lookup_table(&yogabook_pdev_gpios);
-
- if (IS_ERR(data->pen_touch_event)) {
- r = dev_err_probe(dev, PTR_ERR(data->pen_touch_event),
- "Getting pen_touch_event GPIO\n");
- goto error_put_devs;
- }
-
- if (IS_ERR(data->kbd_bl_led_enable)) {
- r = dev_err_probe(dev, PTR_ERR(data->kbd_bl_led_enable),
- "Getting enable_keyboard_led GPIO\n");
- goto error_put_devs;
- }
-
- data->kbd_bl_pwm = devm_pwm_get(dev, "pwm_soc_lpss_2");
- if (IS_ERR(data->kbd_bl_pwm)) {
- r = dev_err_probe(dev, PTR_ERR(data->kbd_bl_pwm),
- "Getting keyboard backlight PWM\n");
- goto error_put_devs;
- }
-
- r = gpiod_to_irq(data->pen_touch_event);
- if (r < 0) {
- dev_err_probe(dev, r, "Getting pen_touch_event IRQ\n");
- goto error_put_devs;
- }
- data->pen_touch_irq = r;
-
- r = request_irq(data->pen_touch_irq, yogabook_pen_touch_irq, IRQF_TRIGGER_FALLING,
- "pen_touch_event", data);
- if (r) {
- dev_err_probe(dev, r, "Requesting pen_touch_event IRQ\n");
- goto error_put_devs;
- }
-
- data->set_kbd_backlight = yogabook_pdev_set_kbd_backlight;
-
- r = yogabook_probe(dev, data, "yogabook::kbd_backlight");
- if (r)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(data->pen_touch_irq, data);
- cancel_work_sync(&data->work);
-error_put_devs:
- put_device(data->dig_dev);
- put_device(data->kbd_dev);
- return r;
-}
-
-static void yogabook_pdev_remove(struct platform_device *pdev)
-{
- struct yogabook_data *data = platform_get_drvdata(pdev);
-
- yogabook_remove(data);
- free_irq(data->pen_touch_irq, data);
- cancel_work_sync(&data->work);
- put_device(data->dig_dev);
- put_device(data->kbd_dev);
-}
-
-static struct platform_driver yogabook_pdev_driver = {
- .probe = yogabook_pdev_probe,
- .remove = yogabook_pdev_remove,
- .driver = {
- .name = YB_PDEV_NAME,
- .pm = pm_sleep_ptr(&yogabook_pm_ops),
- },
-};
-
-static int __init yogabook_module_init(void)
-{
- int r;
-
- r = wmi_driver_register(&yogabook_wmi_driver);
- if (r)
- return r;
-
- r = platform_driver_register(&yogabook_pdev_driver);
- if (r)
- wmi_driver_unregister(&yogabook_wmi_driver);
-
- return r;
-}
-
-static void __exit yogabook_module_exit(void)
-{
- platform_driver_unregister(&yogabook_pdev_driver);
- wmi_driver_unregister(&yogabook_wmi_driver);
-}
-
-module_init(yogabook_module_init);
-module_exit(yogabook_module_exit);
-
-MODULE_ALIAS("platform:" YB_PDEV_NAME);
-MODULE_AUTHOR("Yauhen Kharuzhy");
-MODULE_DESCRIPTION("Lenovo Yoga Book driver");
-MODULE_LICENSE("GPL v2");
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Lenovo X86 Platform Specific Drivers
+#
+
+config IDEAPAD_LAPTOP
+ tristate "Lenovo IdeaPad Laptop Extras"
+ depends on ACPI
+ depends on RFKILL && INPUT
+ depends on SERIO_I8042
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on ACPI_VIDEO || ACPI_VIDEO = n
+ depends on ACPI_WMI || ACPI_WMI = n
+ select ACPI_PLATFORM_PROFILE
+ select INPUT_SPARSEKMAP
+ select NEW_LEDS
+ select LEDS_CLASS
+ help
+ This is a driver for Lenovo IdeaPad netbooks contains drivers for
+ rfkill switch, hotkey, fan control and backlight control.
+
+config LENOVO_WMI_HOTKEY_UTILITIES
+ tristate "Lenovo Hotkey Utility WMI extras driver"
+ depends on ACPI_WMI
+ select NEW_LEDS
+ select LEDS_CLASS
+ imply IDEAPAD_LAPTOP
+ help
+ This driver provides WMI support for Lenovo customized hotkeys function,
+ such as LED control for audio/mic mute event for Ideapad, YOGA, XiaoXin,
+ Gaming, ThinkBook and so on.
+
+config LENOVO_WMI_CAMERA
+ tristate "Lenovo WMI Camera Button driver"
+ depends on ACPI_WMI
+ depends on INPUT
+ help
+ This driver provides support for Lenovo camera button. The Camera
+ button is a GPIO device. This driver receives ACPI notifications when
+ the camera button is switched on/off.
+
+ To compile this driver as a module, choose M here: the module
+ will be called lenovo-wmi-camera.
+
+config LENOVO_YMC
+ tristate "Lenovo Yoga Tablet Mode Control"
+ depends on ACPI_WMI
+ depends on INPUT
+ depends on IDEAPAD_LAPTOP
+ select INPUT_SPARSEKMAP
+ help
+ This driver maps the Tablet Mode Control switch to SW_TABLET_MODE input
+ events for Lenovo Yoga notebooks.
+
+config THINKPAD_ACPI
+ tristate "ThinkPad ACPI Laptop Extras"
+ depends on ACPI_EC
+ depends on ACPI_BATTERY
+ depends on INPUT
+ depends on RFKILL || RFKILL = n
+ depends on ACPI_VIDEO || ACPI_VIDEO = n
+ depends on BACKLIGHT_CLASS_DEVICE
+ depends on I2C
+ depends on DRM
+ select ACPI_PLATFORM_PROFILE
+ select DRM_PRIVACY_SCREEN
+ select HWMON
+ select NVRAM
+ select NEW_LEDS
+ select LEDS_CLASS
+ select INPUT_SPARSEKMAP
+ help
+ This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
+ support for Fn-Fx key combinations, Bluetooth control, video
+ output switching, ThinkLight control, UltraBay eject and more.
+ For more information about this driver see
+ <file:Documentation/admin-guide/laptops/thinkpad-acpi.rst> and
+ <http://ibm-acpi.sf.net/> .
+
+ This driver was formerly known as ibm-acpi.
+
+ Extra functionality will be available if the rfkill (CONFIG_RFKILL)
+ and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
+ Note that if you want ThinkPad-ACPI to be built-in instead of
+ modular, ALSA and rfkill will also have to be built-in.
+
+ If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
+
+config THINKPAD_ACPI_ALSA_SUPPORT
+ bool "Console audio control ALSA interface"
+ depends on THINKPAD_ACPI
+ depends on SND
+ depends on SND = y || THINKPAD_ACPI = SND
+ default y
+ help
+ Enables monitoring of the built-in console audio output control
+ (headphone and speakers), which is operated by the mute and (in
+ some ThinkPad models) volume hotkeys.
+
+ If this option is enabled, ThinkPad-ACPI will export an ALSA card
+ with a single read-only mixer control, which should be used for
+ on-screen-display feedback purposes by the Desktop Environment.
+
+ Optionally, the driver will also allow software control (the
+ ALSA mixer will be made read-write). Please refer to the driver
+ documentation for details.
+
+ All IBM models have both volume and mute control. Newer Lenovo
+ models only have mute control (the volume hotkeys are just normal
+ keys and volume control is done through the main HDA mixer).
+
+config THINKPAD_ACPI_DEBUGFACILITIES
+ bool "Maintainer debug facilities"
+ depends on THINKPAD_ACPI
+ help
+ Enables extra stuff in the thinkpad-acpi which is completely useless
+ for normal use. Read the driver source to find out what it does.
+
+ Say N here, unless you were told by a kernel maintainer to do
+ otherwise.
+
+config THINKPAD_ACPI_DEBUG
+ bool "Verbose debug mode"
+ depends on THINKPAD_ACPI
+ help
+ Enables extra debugging information, at the expense of a slightly
+ increase in driver size.
+
+ If you are not sure, say N here.
+
+config THINKPAD_ACPI_UNSAFE_LEDS
+ bool "Allow control of important LEDs (unsafe)"
+ depends on THINKPAD_ACPI
+ help
+ Overriding LED state on ThinkPads can mask important
+ firmware alerts (like critical battery condition), or misled
+ the user into damaging the hardware (undocking or ejecting
+ the bay while buses are still active), etc.
+
+ LED control on the ThinkPad is write-only (with very few
+ exceptions on very ancient models), which makes it
+ impossible to know beforehand if important information will
+ be lost when one changes LED state.
+
+ Users that know what they are doing can enable this option
+ and the driver will allow control of every LED, including
+ the ones on the dock stations.
+
+ Never enable this option on a distribution kernel.
+
+ Say N here, unless you are building a kernel for your own
+ use, and need to control the important firmware LEDs.
+
+config THINKPAD_ACPI_VIDEO
+ bool "Video output control support"
+ depends on THINKPAD_ACPI
+ default y
+ help
+ Allows the thinkpad_acpi driver to provide an interface to control
+ the various video output ports.
+
+ This feature often won't work well, depending on ThinkPad model,
+ display state, video output devices in use, whether there is a X
+ server running, phase of the moon, and the current mood of
+ Schroedinger's cat. If you can use X.org's RandR to control
+ your ThinkPad's video output ports instead of this feature,
+ don't think twice: do it and say N here to save memory and avoid
+ bad interactions with X.org.
+
+ NOTE: access to this feature is limited to processes with the
+ CAP_SYS_ADMIN capability, to avoid local DoS issues in platforms
+ where it interacts badly with X.org.
+
+ If you are not sure, say Y here but do try to check if you could
+ be using X.org RandR instead.
+
+config THINKPAD_ACPI_HOTKEY_POLL
+ bool "Support NVRAM polling for hot keys"
+ depends on THINKPAD_ACPI
+ default y
+ help
+ Some thinkpad models benefit from NVRAM polling to detect a few of
+ the hot key press events. If you know your ThinkPad model does not
+ need to do NVRAM polling to support any of the hot keys you use,
+ unselecting this option will save about 1kB of memory.
+
+ ThinkPads T40 and newer, R52 and newer, and X31 and newer are
+ unlikely to need NVRAM polling in their latest BIOS versions.
+
+ NVRAM polling can detect at most the following keys: ThinkPad/Access
+ IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
+ Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
+
+ If you are not sure, say Y here. The driver enables polling only if
+ it is strictly necessary to do so.
+
+config THINKPAD_LMI
+ tristate "Lenovo WMI-based systems management driver"
+ depends on ACPI_WMI
+ depends on DMI
+ select FW_ATTR_CLASS
+ help
+ This driver allows changing BIOS settings on Lenovo machines whose
+ BIOS support the WMI interface.
+
+ To compile this driver as a module, choose M here: the module will
+ be called think-lmi.
+
+config YOGABOOK
+ tristate "Lenovo Yoga Book tablet key driver"
+ depends on ACPI_WMI
+ depends on INPUT
+ depends on I2C
+ select LEDS_CLASS
+ select NEW_LEDS
+ help
+ Say Y here if you want to support the 'Pen' key and keyboard backlight
+ control on the Lenovo Yoga Book tablets.
+
+ To compile this driver as a module, choose M here: the module will
+ be called lenovo-yogabook.
+
+config YT2_1380
+ tristate "Lenovo Yoga Tablet 2 1380 fast charge driver"
+ depends on SERIAL_DEV_BUS
+ depends on EXTCON
+ depends on ACPI
+ help
+ Say Y here to enable support for the custom fast charging protocol
+ found on the Lenovo Yoga Tablet 2 1380F / 1380L models.
+
+ To compile this driver as a module, choose M here: the module will
+ be called lenovo-yogabook.
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for linux/drivers/platform/x86/lenovo
+# Lenovo x86 Platform Specific Drivers
+#
+obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
+obj-$(CONFIG_THINKPAD_LMI) += think-lmi.o
+obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
+
+lenovo-target-$(CONFIG_LENOVO_WMI_HOTKEY_UTILITIES) += wmi-hotkey-utilities.o
+lenovo-target-$(CONFIG_LENOVO_YMC) += ymc.o
+lenovo-target-$(CONFIG_YOGABOOK) += yogabook.o
+lenovo-target-$(CONFIG_YT2_1380) += yoga-tab2-pro-1380-fastcharger.o
+lenovo-target-$(CONFIG_LENOVO_WMI_CAMERA) += wmi-camera.o
+
+# Add 'lenovo' prefix to each module listed in lenovo-target-*
+define LENOVO_OBJ_TARGET
+lenovo-$(1)-y := $(1).o
+obj-$(2) += lenovo-$(1).o
+endef
+
+$(foreach target, $(basename $(lenovo-target-y)), $(eval $(call LENOVO_OBJ_TARGET,$(target),y)))
+$(foreach target, $(basename $(lenovo-target-m)), $(eval $(call LENOVO_OBJ_TARGET,$(target),m)))
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
+ *
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/backlight.h>
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/bug.h>
+#include <linux/cleanup.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/dmi.h>
+#include <linux/i8042.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/platform_profile.h>
+#include <linux/rfkill.h>
+#include <linux/seq_file.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <linux/wmi.h>
+#include "ideapad-laptop.h"
+
+#include <acpi/video.h>
+
+#include <dt-bindings/leds/common.h>
+
+#define IDEAPAD_RFKILL_DEV_NUM 3
+
+enum {
+ CFG_CAP_BT_BIT = 16,
+ CFG_CAP_3G_BIT = 17,
+ CFG_CAP_WIFI_BIT = 18,
+ CFG_CAP_CAM_BIT = 19,
+
+ /*
+ * These are OnScreenDisplay support bits that can be useful to determine
+ * whether a hotkey exists/should show OSD. But they aren't particularly
+ * meaningful since they were introduced later, i.e. 2010 IdeaPads
+ * don't have these, but they still have had OSD for hotkeys.
+ */
+ CFG_OSD_NUMLK_BIT = 27,
+ CFG_OSD_CAPSLK_BIT = 28,
+ CFG_OSD_MICMUTE_BIT = 29,
+ CFG_OSD_TOUCHPAD_BIT = 30,
+ CFG_OSD_CAM_BIT = 31,
+};
+
+enum {
+ GBMD_CONSERVATION_STATE_BIT = 5,
+};
+
+enum {
+ SBMC_CONSERVATION_ON = 3,
+ SBMC_CONSERVATION_OFF = 5,
+};
+
+enum {
+ HALS_KBD_BL_SUPPORT_BIT = 4,
+ HALS_KBD_BL_STATE_BIT = 5,
+ HALS_USB_CHARGING_SUPPORT_BIT = 6,
+ HALS_USB_CHARGING_STATE_BIT = 7,
+ HALS_FNLOCK_SUPPORT_BIT = 9,
+ HALS_FNLOCK_STATE_BIT = 10,
+ HALS_HOTKEYS_PRIMARY_BIT = 11,
+};
+
+enum {
+ SALS_KBD_BL_ON = 0x8,
+ SALS_KBD_BL_OFF = 0x9,
+ SALS_USB_CHARGING_ON = 0xa,
+ SALS_USB_CHARGING_OFF = 0xb,
+ SALS_FNLOCK_ON = 0xe,
+ SALS_FNLOCK_OFF = 0xf,
+};
+
+enum {
+ VPCCMD_R_VPC1 = 0x10,
+ VPCCMD_R_BL_MAX,
+ VPCCMD_R_BL,
+ VPCCMD_W_BL,
+ VPCCMD_R_WIFI,
+ VPCCMD_W_WIFI,
+ VPCCMD_R_BT,
+ VPCCMD_W_BT,
+ VPCCMD_R_BL_POWER,
+ VPCCMD_R_NOVO,
+ VPCCMD_R_VPC2,
+ VPCCMD_R_TOUCHPAD,
+ VPCCMD_W_TOUCHPAD,
+ VPCCMD_R_CAMERA,
+ VPCCMD_W_CAMERA,
+ VPCCMD_R_3G,
+ VPCCMD_W_3G,
+ VPCCMD_R_ODD, /* 0x21 */
+ VPCCMD_W_FAN,
+ VPCCMD_R_RF,
+ VPCCMD_W_RF,
+ VPCCMD_W_YMC = 0x2A,
+ VPCCMD_R_FAN = 0x2B,
+ VPCCMD_R_SPECIAL_BUTTONS = 0x31,
+ VPCCMD_W_BL_POWER = 0x33,
+};
+
+/*
+ * These correspond to the number of supported states - 1
+ * Future keyboard types may need a new system, if there's a collision
+ * KBD_BL_TRISTATE_AUTO has no way to report or set the auto state
+ * so it effectively has 3 states, but needs to handle 4
+ */
+enum {
+ KBD_BL_STANDARD = 1,
+ KBD_BL_TRISTATE = 2,
+ KBD_BL_TRISTATE_AUTO = 3,
+};
+
+#define KBD_BL_QUERY_TYPE 0x1
+#define KBD_BL_TRISTATE_TYPE 0x5
+#define KBD_BL_TRISTATE_AUTO_TYPE 0x7
+
+#define KBD_BL_COMMAND_GET 0x2
+#define KBD_BL_COMMAND_SET 0x3
+#define KBD_BL_COMMAND_TYPE GENMASK(7, 4)
+
+#define KBD_BL_GET_BRIGHTNESS GENMASK(15, 1)
+#define KBD_BL_SET_BRIGHTNESS GENMASK(19, 16)
+
+#define KBD_BL_KBLC_CHANGED_EVENT 12
+
+struct ideapad_dytc_priv {
+ enum platform_profile_option current_profile;
+ struct device *ppdev; /* platform profile device */
+ struct mutex mutex; /* protects the DYTC interface */
+ struct ideapad_private *priv;
+};
+
+struct ideapad_rfk_priv {
+ int dev;
+ struct ideapad_private *priv;
+};
+
+struct ideapad_private {
+ struct acpi_device *adev;
+ struct mutex vpc_mutex; /* protects the VPC calls */
+ struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
+ struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
+ struct platform_device *platform_device;
+ struct input_dev *inputdev;
+ struct backlight_device *blightdev;
+ struct ideapad_dytc_priv *dytc;
+ struct dentry *debug;
+ unsigned long cfg;
+ unsigned long r_touchpad_val;
+ struct {
+ bool conservation_mode : 1;
+ bool dytc : 1;
+ bool fan_mode : 1;
+ bool fn_lock : 1;
+ bool set_fn_lock_led : 1;
+ bool hw_rfkill_switch : 1;
+ bool kbd_bl : 1;
+ bool touchpad_ctrl_via_ec : 1;
+ bool ctrl_ps2_aux_port : 1;
+ bool usb_charging : 1;
+ bool ymc_ec_trigger : 1;
+ } features;
+ struct {
+ bool initialized;
+ int type;
+ struct led_classdev led;
+ unsigned int last_brightness;
+ } kbd_bl;
+ struct {
+ bool initialized;
+ struct led_classdev led;
+ unsigned int last_brightness;
+ } fn_lock;
+};
+
+static bool no_bt_rfkill;
+module_param(no_bt_rfkill, bool, 0444);
+MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
+
+static bool allow_v4_dytc;
+module_param(allow_v4_dytc, bool, 0444);
+MODULE_PARM_DESC(allow_v4_dytc,
+ "Enable DYTC version 4 platform-profile support. "
+ "If you need this please report this to: platform-driver-x86@vger.kernel.org");
+
+static bool hw_rfkill_switch;
+module_param(hw_rfkill_switch, bool, 0444);
+MODULE_PARM_DESC(hw_rfkill_switch,
+ "Enable rfkill support for laptops with a hw on/off wifi switch/slider. "
+ "If you need this please report this to: platform-driver-x86@vger.kernel.org");
+
+static bool set_fn_lock_led;
+module_param(set_fn_lock_led, bool, 0444);
+MODULE_PARM_DESC(set_fn_lock_led,
+ "Enable driver based updates of the fn-lock LED on fn-lock changes. "
+ "If you need this please report this to: platform-driver-x86@vger.kernel.org");
+
+static bool ctrl_ps2_aux_port;
+module_param(ctrl_ps2_aux_port, bool, 0444);
+MODULE_PARM_DESC(ctrl_ps2_aux_port,
+ "Enable driver based PS/2 aux port en-/dis-abling on touchpad on/off toggle. "
+ "If you need this please report this to: platform-driver-x86@vger.kernel.org");
+
+static bool touchpad_ctrl_via_ec;
+module_param(touchpad_ctrl_via_ec, bool, 0444);
+MODULE_PARM_DESC(touchpad_ctrl_via_ec,
+ "Enable registering a 'touchpad' sysfs-attribute which can be used to manually "
+ "tell the EC to enable/disable the touchpad. This may not work on all models.");
+
+static bool ymc_ec_trigger __read_mostly;
+module_param(ymc_ec_trigger, bool, 0444);
+MODULE_PARM_DESC(ymc_ec_trigger,
+ "Enable EC triggering work-around to force emitting tablet mode events. "
+ "If you need this please report this to: platform-driver-x86@vger.kernel.org");
+
+/*
+ * shared data
+ */
+
+static struct ideapad_private *ideapad_shared;
+static DEFINE_MUTEX(ideapad_shared_mutex);
+
+static int ideapad_shared_init(struct ideapad_private *priv)
+{
+ int ret;
+
+ guard(mutex)(&ideapad_shared_mutex);
+
+ if (!ideapad_shared) {
+ ideapad_shared = priv;
+ ret = 0;
+ } else {
+ dev_warn(&priv->adev->dev, "found multiple platform devices\n");
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static void ideapad_shared_exit(struct ideapad_private *priv)
+{
+ guard(mutex)(&ideapad_shared_mutex);
+
+ if (ideapad_shared == priv)
+ ideapad_shared = NULL;
+}
+
+/*
+ * ACPI Helpers
+ */
+#define IDEAPAD_EC_TIMEOUT 200 /* in ms */
+
+static int eval_int(acpi_handle handle, const char *name, unsigned long *res)
+{
+ unsigned long long result;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(handle, (char *)name, NULL, &result);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ *res = result;
+
+ return 0;
+}
+
+static int eval_int_with_arg(acpi_handle handle, const char *name, unsigned long arg,
+ unsigned long *res)
+{
+ struct acpi_object_list params;
+ unsigned long long result;
+ union acpi_object in_obj;
+ acpi_status status;
+
+ params.count = 1;
+ params.pointer = &in_obj;
+ in_obj.type = ACPI_TYPE_INTEGER;
+ in_obj.integer.value = arg;
+
+ status = acpi_evaluate_integer(handle, (char *)name, ¶ms, &result);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ if (res)
+ *res = result;
+
+ return 0;
+}
+
+static int exec_simple_method(acpi_handle handle, const char *name, unsigned long arg)
+{
+ acpi_status status = acpi_execute_simple_method(handle, (char *)name, arg);
+
+ return ACPI_FAILURE(status) ? -EIO : 0;
+}
+
+static int eval_gbmd(acpi_handle handle, unsigned long *res)
+{
+ return eval_int(handle, "GBMD", res);
+}
+
+static int exec_sbmc(acpi_handle handle, unsigned long arg)
+{
+ return exec_simple_method(handle, "SBMC", arg);
+}
+
+static int eval_hals(acpi_handle handle, unsigned long *res)
+{
+ return eval_int(handle, "HALS", res);
+}
+
+static int exec_sals(acpi_handle handle, unsigned long arg)
+{
+ return exec_simple_method(handle, "SALS", arg);
+}
+
+static int exec_kblc(acpi_handle handle, unsigned long arg)
+{
+ return exec_simple_method(handle, "KBLC", arg);
+}
+
+static int eval_kblc(acpi_handle handle, unsigned long cmd, unsigned long *res)
+{
+ return eval_int_with_arg(handle, "KBLC", cmd, res);
+}
+
+static int eval_dytc(acpi_handle handle, unsigned long cmd, unsigned long *res)
+{
+ return eval_int_with_arg(handle, "DYTC", cmd, res);
+}
+
+static int eval_vpcr(acpi_handle handle, unsigned long cmd, unsigned long *res)
+{
+ return eval_int_with_arg(handle, "VPCR", cmd, res);
+}
+
+static int eval_vpcw(acpi_handle handle, unsigned long cmd, unsigned long data)
+{
+ struct acpi_object_list params;
+ union acpi_object in_obj[2];
+ acpi_status status;
+
+ params.count = 2;
+ params.pointer = in_obj;
+ in_obj[0].type = ACPI_TYPE_INTEGER;
+ in_obj[0].integer.value = cmd;
+ in_obj[1].type = ACPI_TYPE_INTEGER;
+ in_obj[1].integer.value = data;
+
+ status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ return 0;
+}
+
+static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *data)
+{
+ unsigned long end_jiffies, val;
+ int err;
+
+ err = eval_vpcw(handle, 1, cmd);
+ if (err)
+ return err;
+
+ end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
+
+ while (time_before(jiffies, end_jiffies)) {
+ schedule();
+
+ err = eval_vpcr(handle, 1, &val);
+ if (err)
+ return err;
+
+ if (val == 0)
+ return eval_vpcr(handle, 0, data);
+ }
+
+ acpi_handle_err(handle, "timeout in %s\n", __func__);
+
+ return -ETIMEDOUT;
+}
+
+static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long data)
+{
+ unsigned long end_jiffies, val;
+ int err;
+
+ err = eval_vpcw(handle, 0, data);
+ if (err)
+ return err;
+
+ err = eval_vpcw(handle, 1, cmd);
+ if (err)
+ return err;
+
+ end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
+
+ while (time_before(jiffies, end_jiffies)) {
+ schedule();
+
+ err = eval_vpcr(handle, 1, &val);
+ if (err)
+ return err;
+
+ if (val == 0)
+ return 0;
+ }
+
+ acpi_handle_err(handle, "timeout in %s\n", __func__);
+
+ return -ETIMEDOUT;
+}
+
+/*
+ * debugfs
+ */
+static int debugfs_status_show(struct seq_file *s, void *data)
+{
+ struct ideapad_private *priv = s->private;
+ unsigned long value;
+
+ guard(mutex)(&priv->vpc_mutex);
+
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
+ seq_printf(s, "Backlight max: %lu\n", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
+ seq_printf(s, "Backlight now: %lu\n", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
+ seq_printf(s, "BL power value: %s (%lu)\n", value ? "on" : "off", value);
+
+ seq_puts(s, "=====================\n");
+
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
+ seq_printf(s, "Radio status: %s (%lu)\n", value ? "on" : "off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
+ seq_printf(s, "Wifi status: %s (%lu)\n", value ? "on" : "off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
+ seq_printf(s, "BT status: %s (%lu)\n", value ? "on" : "off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
+ seq_printf(s, "3G status: %s (%lu)\n", value ? "on" : "off", value);
+
+ seq_puts(s, "=====================\n");
+
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
+ seq_printf(s, "Touchpad status: %s (%lu)\n", value ? "on" : "off", value);
+ if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
+ seq_printf(s, "Camera status: %s (%lu)\n", value ? "on" : "off", value);
+
+ seq_puts(s, "=====================\n");
+
+ if (!eval_gbmd(priv->adev->handle, &value))
+ seq_printf(s, "GBMD: %#010lx\n", value);
+ if (!eval_hals(priv->adev->handle, &value))
+ seq_printf(s, "HALS: %#010lx\n", value);
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(debugfs_status);
+
+static int debugfs_cfg_show(struct seq_file *s, void *data)
+{
+ struct ideapad_private *priv = s->private;
+
+ seq_printf(s, "_CFG: %#010lx\n\n", priv->cfg);
+
+ seq_puts(s, "Capabilities:");
+ if (test_bit(CFG_CAP_BT_BIT, &priv->cfg))
+ seq_puts(s, " bluetooth");
+ if (test_bit(CFG_CAP_3G_BIT, &priv->cfg))
+ seq_puts(s, " 3G");
+ if (test_bit(CFG_CAP_WIFI_BIT, &priv->cfg))
+ seq_puts(s, " wifi");
+ if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg))
+ seq_puts(s, " camera");
+ seq_puts(s, "\n");
+
+ seq_puts(s, "OSD support:");
+ if (test_bit(CFG_OSD_NUMLK_BIT, &priv->cfg))
+ seq_puts(s, " num-lock");
+ if (test_bit(CFG_OSD_CAPSLK_BIT, &priv->cfg))
+ seq_puts(s, " caps-lock");
+ if (test_bit(CFG_OSD_MICMUTE_BIT, &priv->cfg))
+ seq_puts(s, " mic-mute");
+ if (test_bit(CFG_OSD_TOUCHPAD_BIT, &priv->cfg))
+ seq_puts(s, " touchpad");
+ if (test_bit(CFG_OSD_CAM_BIT, &priv->cfg))
+ seq_puts(s, " camera");
+ seq_puts(s, "\n");
+
+ seq_puts(s, "Graphics: ");
+ switch (priv->cfg & 0x700) {
+ case 0x100:
+ seq_puts(s, "Intel");
+ break;
+ case 0x200:
+ seq_puts(s, "ATI");
+ break;
+ case 0x300:
+ seq_puts(s, "Nvidia");
+ break;
+ case 0x400:
+ seq_puts(s, "Intel and ATI");
+ break;
+ case 0x500:
+ seq_puts(s, "Intel and Nvidia");
+ break;
+ }
+ seq_puts(s, "\n");
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
+
+static void ideapad_debugfs_init(struct ideapad_private *priv)
+{
+ struct dentry *dir;
+
+ dir = debugfs_create_dir("ideapad", NULL);
+ priv->debug = dir;
+
+ debugfs_create_file("cfg", 0444, dir, priv, &debugfs_cfg_fops);
+ debugfs_create_file("status", 0444, dir, priv, &debugfs_status_fops);
+}
+
+static void ideapad_debugfs_exit(struct ideapad_private *priv)
+{
+ debugfs_remove_recursive(priv->debug);
+ priv->debug = NULL;
+}
+
+/*
+ * sysfs
+ */
+static ssize_t camera_power_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned long result = 0;
+ int err;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result);
+ if (err)
+ return err;
+ }
+
+ return sysfs_emit(buf, "%d\n", !!result);
+}
+
+static ssize_t camera_power_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool state;
+ int err;
+
+ err = kstrtobool(buf, &state);
+ if (err)
+ return err;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ err = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
+ if (err)
+ return err;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(camera_power);
+
+static ssize_t conservation_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned long result;
+ int err;
+
+ err = eval_gbmd(priv->adev->handle, &result);
+ if (err)
+ return err;
+
+ return sysfs_emit(buf, "%d\n", !!test_bit(GBMD_CONSERVATION_STATE_BIT, &result));
+}
+
+static ssize_t conservation_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool state;
+ int err;
+
+ err = kstrtobool(buf, &state);
+ if (err)
+ return err;
+
+ err = exec_sbmc(priv->adev->handle, state ? SBMC_CONSERVATION_ON : SBMC_CONSERVATION_OFF);
+ if (err)
+ return err;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(conservation_mode);
+
+static ssize_t fan_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned long result = 0;
+ int err;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result);
+ if (err)
+ return err;
+ }
+
+ return sysfs_emit(buf, "%lu\n", result);
+}
+
+static ssize_t fan_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned int state;
+ int err;
+
+ err = kstrtouint(buf, 0, &state);
+ if (err)
+ return err;
+
+ if (state > 4 || state == 3)
+ return -EINVAL;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ err = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
+ if (err)
+ return err;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(fan_mode);
+
+static int ideapad_fn_lock_get(struct ideapad_private *priv)
+{
+ unsigned long hals;
+ int err;
+
+ err = eval_hals(priv->adev->handle, &hals);
+ if (err)
+ return err;
+
+ return !!test_bit(HALS_FNLOCK_STATE_BIT, &hals);
+}
+
+static int ideapad_fn_lock_set(struct ideapad_private *priv, bool state)
+{
+ return exec_sals(priv->adev->handle,
+ state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
+}
+
+static void ideapad_fn_lock_led_notify(struct ideapad_private *priv, int brightness)
+{
+ if (!priv->fn_lock.initialized)
+ return;
+
+ if (brightness == priv->fn_lock.last_brightness)
+ return;
+
+ priv->fn_lock.last_brightness = brightness;
+
+ led_classdev_notify_brightness_hw_changed(&priv->fn_lock.led, brightness);
+}
+
+static ssize_t fn_lock_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ int brightness;
+
+ brightness = ideapad_fn_lock_get(priv);
+ if (brightness < 0)
+ return brightness;
+
+ return sysfs_emit(buf, "%d\n", brightness);
+}
+
+static ssize_t fn_lock_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool state;
+ int err;
+
+ err = kstrtobool(buf, &state);
+ if (err)
+ return err;
+
+ err = ideapad_fn_lock_set(priv, state);
+ if (err)
+ return err;
+
+ ideapad_fn_lock_led_notify(priv, state);
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(fn_lock);
+
+static ssize_t touchpad_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned long result = 0;
+ int err;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result);
+ if (err)
+ return err;
+ }
+
+ priv->r_touchpad_val = result;
+
+ return sysfs_emit(buf, "%d\n", !!result);
+}
+
+static ssize_t touchpad_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool state;
+ int err;
+
+ err = kstrtobool(buf, &state);
+ if (err)
+ return err;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ err = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
+ if (err)
+ return err;
+ }
+
+ priv->r_touchpad_val = state;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(touchpad);
+
+static ssize_t usb_charging_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ unsigned long hals;
+ int err;
+
+ err = eval_hals(priv->adev->handle, &hals);
+ if (err)
+ return err;
+
+ return sysfs_emit(buf, "%d\n", !!test_bit(HALS_USB_CHARGING_STATE_BIT, &hals));
+}
+
+static ssize_t usb_charging_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool state;
+ int err;
+
+ err = kstrtobool(buf, &state);
+ if (err)
+ return err;
+
+ err = exec_sals(priv->adev->handle, state ? SALS_USB_CHARGING_ON : SALS_USB_CHARGING_OFF);
+ if (err)
+ return err;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(usb_charging);
+
+static struct attribute *ideapad_attributes[] = {
+ &dev_attr_camera_power.attr,
+ &dev_attr_conservation_mode.attr,
+ &dev_attr_fan_mode.attr,
+ &dev_attr_fn_lock.attr,
+ &dev_attr_touchpad.attr,
+ &dev_attr_usb_charging.attr,
+ NULL
+};
+
+static umode_t ideapad_is_visible(struct kobject *kobj,
+ struct attribute *attr,
+ int idx)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+ bool supported = true;
+
+ if (attr == &dev_attr_camera_power.attr)
+ supported = test_bit(CFG_CAP_CAM_BIT, &priv->cfg);
+ else if (attr == &dev_attr_conservation_mode.attr)
+ supported = priv->features.conservation_mode;
+ else if (attr == &dev_attr_fan_mode.attr)
+ supported = priv->features.fan_mode;
+ else if (attr == &dev_attr_fn_lock.attr)
+ supported = priv->features.fn_lock;
+ else if (attr == &dev_attr_touchpad.attr)
+ supported = priv->features.touchpad_ctrl_via_ec;
+ else if (attr == &dev_attr_usb_charging.attr)
+ supported = priv->features.usb_charging;
+
+ return supported ? attr->mode : 0;
+}
+
+static const struct attribute_group ideapad_attribute_group = {
+ .is_visible = ideapad_is_visible,
+ .attrs = ideapad_attributes
+};
+__ATTRIBUTE_GROUPS(ideapad_attribute);
+
+/*
+ * DYTC Platform profile
+ */
+#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
+#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
+#define DYTC_CMD_GET 2 /* To get current IC function and mode */
+#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
+
+#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
+#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
+#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
+
+#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
+#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
+
+#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
+#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
+#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
+
+#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
+#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
+#define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */
+
+#define DYTC_MODE_PERFORM 2 /* High power mode aka performance */
+#define DYTC_MODE_LOW_POWER 3 /* Low power mode aka quiet */
+#define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */
+
+#define DYTC_SET_COMMAND(function, mode, on) \
+ (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
+ (mode) << DYTC_SET_MODE_BIT | \
+ (on) << DYTC_SET_VALID_BIT)
+
+#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0)
+
+#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1)
+
+static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile)
+{
+ switch (dytcmode) {
+ case DYTC_MODE_LOW_POWER:
+ *profile = PLATFORM_PROFILE_LOW_POWER;
+ break;
+ case DYTC_MODE_BALANCE:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ break;
+ case DYTC_MODE_PERFORM:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ break;
+ default: /* Unknown mode */
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
+{
+ switch (profile) {
+ case PLATFORM_PROFILE_LOW_POWER:
+ *perfmode = DYTC_MODE_LOW_POWER;
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ *perfmode = DYTC_MODE_BALANCE;
+ break;
+ case PLATFORM_PROFILE_PERFORMANCE:
+ *perfmode = DYTC_MODE_PERFORM;
+ break;
+ default: /* Unknown profile */
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+/*
+ * dytc_profile_get: Function to register with platform_profile
+ * handler. Returns current platform profile.
+ */
+static int dytc_profile_get(struct device *dev,
+ enum platform_profile_option *profile)
+{
+ struct ideapad_dytc_priv *dytc = dev_get_drvdata(dev);
+
+ *profile = dytc->current_profile;
+ return 0;
+}
+
+/*
+ * Helper function - check if we are in CQL mode and if we are
+ * - disable CQL,
+ * - run the command
+ * - enable CQL
+ * If not in CQL mode, just run the command
+ */
+static int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd,
+ unsigned long *output)
+{
+ int err, cmd_err, cur_funcmode;
+
+ /* Determine if we are in CQL mode. This alters the commands we do */
+ err = eval_dytc(priv->adev->handle, DYTC_CMD_GET, output);
+ if (err)
+ return err;
+
+ cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
+ /* Check if we're OK to return immediately */
+ if (cmd == DYTC_CMD_GET && cur_funcmode != DYTC_FUNCTION_CQL)
+ return 0;
+
+ if (cur_funcmode == DYTC_FUNCTION_CQL) {
+ err = eval_dytc(priv->adev->handle, DYTC_DISABLE_CQL, NULL);
+ if (err)
+ return err;
+ }
+
+ cmd_err = eval_dytc(priv->adev->handle, cmd, output);
+ /* Check return condition after we've restored CQL state */
+
+ if (cur_funcmode == DYTC_FUNCTION_CQL) {
+ err = eval_dytc(priv->adev->handle, DYTC_ENABLE_CQL, NULL);
+ if (err)
+ return err;
+ }
+
+ return cmd_err;
+}
+
+/*
+ * dytc_profile_set: Function to register with platform_profile
+ * handler. Sets current platform profile.
+ */
+static int dytc_profile_set(struct device *dev,
+ enum platform_profile_option profile)
+{
+ struct ideapad_dytc_priv *dytc = dev_get_drvdata(dev);
+ struct ideapad_private *priv = dytc->priv;
+ unsigned long output;
+ int err;
+
+ scoped_guard(mutex_intr, &dytc->mutex) {
+ if (profile == PLATFORM_PROFILE_BALANCED) {
+ /* To get back to balanced mode we just issue a reset command */
+ err = eval_dytc(priv->adev->handle, DYTC_CMD_RESET, NULL);
+ if (err)
+ return err;
+ } else {
+ int perfmode;
+
+ err = convert_profile_to_dytc(profile, &perfmode);
+ if (err)
+ return err;
+
+ /* Determine if we are in CQL mode. This alters the commands we do */
+ err = dytc_cql_command(priv,
+ DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
+ &output);
+ if (err)
+ return err;
+ }
+
+ /* Success - update current profile */
+ dytc->current_profile = profile;
+ return 0;
+ }
+
+ return -EINTR;
+}
+
+static int dytc_profile_probe(void *drvdata, unsigned long *choices)
+{
+ set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
+
+ return 0;
+}
+
+static void dytc_profile_refresh(struct ideapad_private *priv)
+{
+ enum platform_profile_option profile;
+ unsigned long output;
+ int err, perfmode;
+
+ scoped_guard(mutex, &priv->dytc->mutex)
+ err = dytc_cql_command(priv, DYTC_CMD_GET, &output);
+ if (err)
+ return;
+
+ perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
+
+ if (convert_dytc_to_profile(perfmode, &profile))
+ return;
+
+ if (profile != priv->dytc->current_profile) {
+ priv->dytc->current_profile = profile;
+ platform_profile_notify(priv->dytc->ppdev);
+ }
+}
+
+static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
+ {
+ /* Ideapad 5 Pro 16ACH6 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "82L5")
+ }
+ },
+ {
+ /* Ideapad 5 15ITL05 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad 5 15ITL05")
+ }
+ },
+ {}
+};
+
+static const struct platform_profile_ops dytc_profile_ops = {
+ .probe = dytc_profile_probe,
+ .profile_get = dytc_profile_get,
+ .profile_set = dytc_profile_set,
+};
+
+static int ideapad_dytc_profile_init(struct ideapad_private *priv)
+{
+ int err, dytc_version;
+ unsigned long output;
+
+ if (!priv->features.dytc)
+ return -ENODEV;
+
+ err = eval_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output);
+ /* For all other errors we can flag the failure */
+ if (err)
+ return err;
+
+ /* Check DYTC is enabled and supports mode setting */
+ if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output)) {
+ dev_info(&priv->platform_device->dev, "DYTC_QUERY_ENABLE_BIT returned false\n");
+ return -ENODEV;
+ }
+
+ dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
+
+ if (dytc_version < 4) {
+ dev_info(&priv->platform_device->dev, "DYTC_VERSION < 4 is not supported\n");
+ return -ENODEV;
+ }
+
+ if (dytc_version < 5 &&
+ !(allow_v4_dytc || dmi_check_system(ideapad_dytc_v4_allow_table))) {
+ dev_info(&priv->platform_device->dev,
+ "DYTC_VERSION 4 support may not work. Pass ideapad_laptop.allow_v4_dytc=Y on the kernel commandline to enable\n");
+ return -ENODEV;
+ }
+
+ priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL);
+ if (!priv->dytc)
+ return -ENOMEM;
+
+ mutex_init(&priv->dytc->mutex);
+
+ priv->dytc->priv = priv;
+
+ /* Create platform_profile structure and register */
+ priv->dytc->ppdev = devm_platform_profile_register(&priv->platform_device->dev,
+ "ideapad-laptop", priv->dytc,
+ &dytc_profile_ops);
+ if (IS_ERR(priv->dytc->ppdev)) {
+ err = PTR_ERR(priv->dytc->ppdev);
+ goto pp_reg_failed;
+ }
+
+ /* Ensure initial values are correct */
+ dytc_profile_refresh(priv);
+
+ return 0;
+
+pp_reg_failed:
+ mutex_destroy(&priv->dytc->mutex);
+ kfree(priv->dytc);
+ priv->dytc = NULL;
+
+ return err;
+}
+
+static void ideapad_dytc_profile_exit(struct ideapad_private *priv)
+{
+ if (!priv->dytc)
+ return;
+
+ mutex_destroy(&priv->dytc->mutex);
+ kfree(priv->dytc);
+
+ priv->dytc = NULL;
+}
+
+/*
+ * Rfkill
+ */
+struct ideapad_rfk_data {
+ char *name;
+ int cfgbit;
+ int opcode;
+ int type;
+};
+
+static const struct ideapad_rfk_data ideapad_rfk_data[] = {
+ { "ideapad_wlan", CFG_CAP_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
+ { "ideapad_bluetooth", CFG_CAP_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
+ { "ideapad_3g", CFG_CAP_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
+};
+
+static int ideapad_rfk_set(void *data, bool blocked)
+{
+ struct ideapad_rfk_priv *priv = data;
+ int opcode = ideapad_rfk_data[priv->dev].opcode;
+
+ guard(mutex)(&priv->priv->vpc_mutex);
+
+ return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
+}
+
+static const struct rfkill_ops ideapad_rfk_ops = {
+ .set_block = ideapad_rfk_set,
+};
+
+static void ideapad_sync_rfk_state(struct ideapad_private *priv)
+{
+ unsigned long hw_blocked = 0;
+ int i;
+
+ if (priv->features.hw_rfkill_switch) {
+ guard(mutex)(&priv->vpc_mutex);
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
+ return;
+ hw_blocked = !hw_blocked;
+ }
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ if (priv->rfk[i])
+ rfkill_set_hw_state(priv->rfk[i], hw_blocked);
+}
+
+static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
+{
+ unsigned long rf_enabled;
+ int err;
+
+ if (no_bt_rfkill && ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH) {
+ /* Force to enable bluetooth when no_bt_rfkill=1 */
+ write_ec_cmd(priv->adev->handle, ideapad_rfk_data[dev].opcode, 1);
+ return 0;
+ }
+
+ priv->rfk_priv[dev].dev = dev;
+ priv->rfk_priv[dev].priv = priv;
+
+ priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
+ &priv->platform_device->dev,
+ ideapad_rfk_data[dev].type,
+ &ideapad_rfk_ops,
+ &priv->rfk_priv[dev]);
+ if (!priv->rfk[dev])
+ return -ENOMEM;
+
+ err = read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode - 1, &rf_enabled);
+ if (err)
+ rf_enabled = 1;
+
+ rfkill_init_sw_state(priv->rfk[dev], !rf_enabled);
+
+ err = rfkill_register(priv->rfk[dev]);
+ if (err)
+ rfkill_destroy(priv->rfk[dev]);
+
+ return err;
+}
+
+static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
+{
+ if (!priv->rfk[dev])
+ return;
+
+ rfkill_unregister(priv->rfk[dev]);
+ rfkill_destroy(priv->rfk[dev]);
+}
+
+/*
+ * input device
+ */
+#define IDEAPAD_WMI_KEY 0x100
+
+static const struct key_entry ideapad_keymap[] = {
+ { KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, 7, { KEY_CAMERA } },
+ { KE_KEY, 8, { KEY_MICMUTE } },
+ { KE_KEY, 11, { KEY_F16 } },
+ { KE_KEY, 13, { KEY_WLAN } },
+ { KE_KEY, 16, { KEY_PROG1 } },
+ { KE_KEY, 17, { KEY_PROG2 } },
+ { KE_KEY, 64, { KEY_PROG3 } },
+ { KE_KEY, 65, { KEY_PROG4 } },
+ { KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
+ { KE_KEY, 67, { KEY_TOUCHPAD_ON } },
+ { KE_KEY, 128, { KEY_ESC } },
+
+ /*
+ * WMI keys
+ */
+
+ /* FnLock (handled by the firmware) */
+ { KE_IGNORE, 0x02 | IDEAPAD_WMI_KEY },
+ /* Esc (handled by the firmware) */
+ { KE_IGNORE, 0x03 | IDEAPAD_WMI_KEY },
+ /* Customizable Lenovo Hotkey ("star" with 'S' inside) */
+ { KE_KEY, 0x01 | IDEAPAD_WMI_KEY, { KEY_FAVORITES } },
+ { KE_KEY, 0x04 | IDEAPAD_WMI_KEY, { KEY_SELECTIVE_SCREENSHOT } },
+ /* Lenovo Support */
+ { KE_KEY, 0x07 | IDEAPAD_WMI_KEY, { KEY_HELP } },
+ { KE_KEY, 0x0e | IDEAPAD_WMI_KEY, { KEY_PICKUP_PHONE } },
+ { KE_KEY, 0x0f | IDEAPAD_WMI_KEY, { KEY_HANGUP_PHONE } },
+ /* Refresh Rate Toggle (Fn+R) */
+ { KE_KEY, 0x10 | IDEAPAD_WMI_KEY, { KEY_REFRESH_RATE_TOGGLE } },
+ /* Dark mode toggle */
+ { KE_KEY, 0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
+ /* Sound profile switch */
+ { KE_KEY, 0x12 | IDEAPAD_WMI_KEY, { KEY_PROG2 } },
+ /* Lenovo Virtual Background application */
+ { KE_KEY, 0x28 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
+ /* Lenovo Support */
+ { KE_KEY, 0x27 | IDEAPAD_WMI_KEY, { KEY_HELP } },
+ /* Refresh Rate Toggle */
+ { KE_KEY, 0x0a | IDEAPAD_WMI_KEY, { KEY_REFRESH_RATE_TOGGLE } },
+ /* Specific to some newer models */
+ { KE_KEY, 0x3e | IDEAPAD_WMI_KEY, { KEY_MICMUTE } },
+ { KE_KEY, 0x3f | IDEAPAD_WMI_KEY, { KEY_RFKILL } },
+ /* Star- (User Assignable Key) */
+ { KE_KEY, 0x44 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
+ /* Eye */
+ { KE_KEY, 0x45 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
+ /* Performance toggle also Fn+Q, handled inside ideapad_wmi_notify() */
+ { KE_KEY, 0x3d | IDEAPAD_WMI_KEY, { KEY_PROG4 } },
+ /* shift + prtsc */
+ { KE_KEY, 0x2d | IDEAPAD_WMI_KEY, { KEY_CUT } },
+ { KE_KEY, 0x29 | IDEAPAD_WMI_KEY, { KEY_TOUCHPAD_TOGGLE } },
+ { KE_KEY, 0x2a | IDEAPAD_WMI_KEY, { KEY_ROOT_MENU } },
+
+ { KE_END },
+};
+
+static int ideapad_input_init(struct ideapad_private *priv)
+{
+ struct input_dev *inputdev;
+ int err;
+
+ inputdev = input_allocate_device();
+ if (!inputdev)
+ return -ENOMEM;
+
+ inputdev->name = "Ideapad extra buttons";
+ inputdev->phys = "ideapad/input0";
+ inputdev->id.bustype = BUS_HOST;
+ inputdev->dev.parent = &priv->platform_device->dev;
+
+ err = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
+ if (err) {
+ dev_err(&priv->platform_device->dev,
+ "Could not set up input device keymap: %d\n", err);
+ goto err_free_dev;
+ }
+
+ err = input_register_device(inputdev);
+ if (err) {
+ dev_err(&priv->platform_device->dev,
+ "Could not register input device: %d\n", err);
+ goto err_free_dev;
+ }
+
+ priv->inputdev = inputdev;
+
+ return 0;
+
+err_free_dev:
+ input_free_device(inputdev);
+
+ return err;
+}
+
+static void ideapad_input_exit(struct ideapad_private *priv)
+{
+ input_unregister_device(priv->inputdev);
+ priv->inputdev = NULL;
+}
+
+static void ideapad_input_report(struct ideapad_private *priv,
+ unsigned long scancode)
+{
+ sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
+}
+
+static void ideapad_input_novokey(struct ideapad_private *priv)
+{
+ unsigned long long_pressed;
+
+ scoped_guard(mutex, &priv->vpc_mutex)
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
+ return;
+
+ if (long_pressed)
+ ideapad_input_report(priv, 17);
+ else
+ ideapad_input_report(priv, 16);
+}
+
+static void ideapad_check_special_buttons(struct ideapad_private *priv)
+{
+ unsigned long bit, value;
+
+ scoped_guard(mutex, &priv->vpc_mutex)
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value))
+ return;
+
+ for_each_set_bit (bit, &value, 16) {
+ switch (bit) {
+ case 6: /* Z570 */
+ case 0: /* Z580 */
+ /* Thermal Management / Performance Mode button */
+ if (priv->dytc)
+ platform_profile_cycle();
+ else
+ ideapad_input_report(priv, 65);
+ break;
+ case 1:
+ /* OneKey Theater button */
+ ideapad_input_report(priv, 64);
+ break;
+ default:
+ dev_info(&priv->platform_device->dev,
+ "Unknown special button: %lu\n", bit);
+ break;
+ }
+ }
+}
+
+/*
+ * backlight
+ */
+static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
+{
+ struct ideapad_private *priv = bl_get_data(blightdev);
+ unsigned long now;
+ int err;
+
+ guard(mutex)(&priv->vpc_mutex);
+
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+ if (err)
+ return err;
+
+ return now;
+}
+
+static int ideapad_backlight_update_status(struct backlight_device *blightdev)
+{
+ struct ideapad_private *priv = bl_get_data(blightdev);
+ int err;
+
+ guard(mutex)(&priv->vpc_mutex);
+
+ err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
+ blightdev->props.brightness);
+ if (err)
+ return err;
+
+ err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
+ blightdev->props.power != BACKLIGHT_POWER_OFF);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static const struct backlight_ops ideapad_backlight_ops = {
+ .get_brightness = ideapad_backlight_get_brightness,
+ .update_status = ideapad_backlight_update_status,
+};
+
+static int ideapad_backlight_init(struct ideapad_private *priv)
+{
+ struct backlight_device *blightdev;
+ struct backlight_properties props;
+ unsigned long max, now, power;
+ int err;
+
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max);
+ if (err)
+ return err;
+
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+ if (err)
+ return err;
+
+ err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power);
+ if (err)
+ return err;
+
+ memset(&props, 0, sizeof(props));
+
+ props.max_brightness = max;
+ props.type = BACKLIGHT_PLATFORM;
+
+ blightdev = backlight_device_register("ideapad",
+ &priv->platform_device->dev,
+ priv,
+ &ideapad_backlight_ops,
+ &props);
+ if (IS_ERR(blightdev)) {
+ err = PTR_ERR(blightdev);
+ dev_err(&priv->platform_device->dev,
+ "Could not register backlight device: %d\n", err);
+ return err;
+ }
+
+ priv->blightdev = blightdev;
+ blightdev->props.brightness = now;
+ blightdev->props.power = power ? BACKLIGHT_POWER_ON : BACKLIGHT_POWER_OFF;
+
+ backlight_update_status(blightdev);
+
+ return 0;
+}
+
+static void ideapad_backlight_exit(struct ideapad_private *priv)
+{
+ backlight_device_unregister(priv->blightdev);
+ priv->blightdev = NULL;
+}
+
+static void ideapad_backlight_notify_power(struct ideapad_private *priv)
+{
+ struct backlight_device *blightdev = priv->blightdev;
+ unsigned long power;
+
+ if (!blightdev)
+ return;
+
+ guard(mutex)(&priv->vpc_mutex);
+
+ if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
+ return;
+
+ blightdev->props.power = power ? BACKLIGHT_POWER_ON : BACKLIGHT_POWER_OFF;
+}
+
+static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
+{
+ unsigned long now;
+
+ /* if we control brightness via acpi video driver */
+ if (!priv->blightdev)
+ scoped_guard(mutex, &priv->vpc_mutex)
+ read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
+ else
+ backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
+}
+
+/*
+ * keyboard backlight
+ */
+static int ideapad_kbd_bl_check_tristate(int type)
+{
+ return (type == KBD_BL_TRISTATE) || (type == KBD_BL_TRISTATE_AUTO);
+}
+
+static int ideapad_kbd_bl_brightness_get(struct ideapad_private *priv)
+{
+ unsigned long value;
+ int err;
+
+ if (ideapad_kbd_bl_check_tristate(priv->kbd_bl.type)) {
+ err = eval_kblc(priv->adev->handle,
+ FIELD_PREP(KBD_BL_COMMAND_TYPE, priv->kbd_bl.type) |
+ KBD_BL_COMMAND_GET,
+ &value);
+
+ if (err)
+ return err;
+
+ /* Convert returned value to brightness level */
+ value = FIELD_GET(KBD_BL_GET_BRIGHTNESS, value);
+
+ /* Off, low or high */
+ if (value <= priv->kbd_bl.led.max_brightness)
+ return value;
+
+ /* Auto, report as off */
+ if (value == priv->kbd_bl.led.max_brightness + 1)
+ return 0;
+
+ /* Unknown value */
+ dev_warn(&priv->platform_device->dev,
+ "Unknown keyboard backlight value: %lu", value);
+ return -EINVAL;
+ }
+
+ err = eval_hals(priv->adev->handle, &value);
+ if (err)
+ return err;
+
+ return !!test_bit(HALS_KBD_BL_STATE_BIT, &value);
+}
+
+static enum led_brightness ideapad_kbd_bl_led_cdev_brightness_get(struct led_classdev *led_cdev)
+{
+ struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
+
+ return ideapad_kbd_bl_brightness_get(priv);
+}
+
+static int ideapad_kbd_bl_brightness_set(struct ideapad_private *priv, unsigned int brightness)
+{
+ int err;
+ unsigned long value;
+ int type = priv->kbd_bl.type;
+
+ if (ideapad_kbd_bl_check_tristate(type)) {
+ if (brightness > priv->kbd_bl.led.max_brightness)
+ return -EINVAL;
+
+ value = FIELD_PREP(KBD_BL_SET_BRIGHTNESS, brightness) |
+ FIELD_PREP(KBD_BL_COMMAND_TYPE, type) |
+ KBD_BL_COMMAND_SET;
+ err = exec_kblc(priv->adev->handle, value);
+ } else {
+ err = exec_sals(priv->adev->handle, brightness ? SALS_KBD_BL_ON : SALS_KBD_BL_OFF);
+ }
+
+ if (err)
+ return err;
+
+ priv->kbd_bl.last_brightness = brightness;
+
+ return 0;
+}
+
+static int ideapad_kbd_bl_led_cdev_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
+
+ return ideapad_kbd_bl_brightness_set(priv, brightness);
+}
+
+static void ideapad_kbd_bl_notify(struct ideapad_private *priv)
+{
+ int brightness;
+
+ if (!priv->kbd_bl.initialized)
+ return;
+
+ brightness = ideapad_kbd_bl_brightness_get(priv);
+ if (brightness < 0)
+ return;
+
+ if (brightness == priv->kbd_bl.last_brightness)
+ return;
+
+ priv->kbd_bl.last_brightness = brightness;
+
+ led_classdev_notify_brightness_hw_changed(&priv->kbd_bl.led, brightness);
+}
+
+static int ideapad_kbd_bl_init(struct ideapad_private *priv)
+{
+ int brightness, err;
+
+ if (!priv->features.kbd_bl)
+ return -ENODEV;
+
+ if (WARN_ON(priv->kbd_bl.initialized))
+ return -EEXIST;
+
+ if (ideapad_kbd_bl_check_tristate(priv->kbd_bl.type)) {
+ priv->kbd_bl.led.max_brightness = 2;
+ } else {
+ priv->kbd_bl.led.max_brightness = 1;
+ }
+
+ brightness = ideapad_kbd_bl_brightness_get(priv);
+ if (brightness < 0)
+ return brightness;
+
+ priv->kbd_bl.last_brightness = brightness;
+ priv->kbd_bl.led.name = "platform::" LED_FUNCTION_KBD_BACKLIGHT;
+ priv->kbd_bl.led.brightness_get = ideapad_kbd_bl_led_cdev_brightness_get;
+ priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set;
+ priv->kbd_bl.led.flags = LED_BRIGHT_HW_CHANGED;
+
+ err = led_classdev_register(&priv->platform_device->dev, &priv->kbd_bl.led);
+ if (err)
+ return err;
+
+ priv->kbd_bl.initialized = true;
+
+ return 0;
+}
+
+static void ideapad_kbd_bl_exit(struct ideapad_private *priv)
+{
+ if (!priv->kbd_bl.initialized)
+ return;
+
+ priv->kbd_bl.initialized = false;
+
+ led_classdev_unregister(&priv->kbd_bl.led);
+}
+
+/*
+ * FnLock LED
+ */
+static enum led_brightness ideapad_fn_lock_led_cdev_get(struct led_classdev *led_cdev)
+{
+ struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, fn_lock.led);
+
+ return ideapad_fn_lock_get(priv);
+}
+
+static int ideapad_fn_lock_led_cdev_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, fn_lock.led);
+
+ return ideapad_fn_lock_set(priv, brightness);
+}
+
+static int ideapad_fn_lock_led_init(struct ideapad_private *priv)
+{
+ int brightness, err;
+
+ if (!priv->features.fn_lock)
+ return -ENODEV;
+
+ if (WARN_ON(priv->fn_lock.initialized))
+ return -EEXIST;
+
+ priv->fn_lock.led.max_brightness = 1;
+
+ brightness = ideapad_fn_lock_get(priv);
+ if (brightness < 0)
+ return brightness;
+
+ priv->fn_lock.last_brightness = brightness;
+ priv->fn_lock.led.name = "platform::" LED_FUNCTION_FNLOCK;
+ priv->fn_lock.led.brightness_get = ideapad_fn_lock_led_cdev_get;
+ priv->fn_lock.led.brightness_set_blocking = ideapad_fn_lock_led_cdev_set;
+ priv->fn_lock.led.flags = LED_BRIGHT_HW_CHANGED;
+
+ err = led_classdev_register(&priv->platform_device->dev, &priv->fn_lock.led);
+ if (err)
+ return err;
+
+ priv->fn_lock.initialized = true;
+
+ return 0;
+}
+
+static void ideapad_fn_lock_led_exit(struct ideapad_private *priv)
+{
+ if (!priv->fn_lock.initialized)
+ return;
+
+ priv->fn_lock.initialized = false;
+
+ led_classdev_unregister(&priv->fn_lock.led);
+}
+
+/*
+ * module init/exit
+ */
+static void ideapad_sync_touchpad_state(struct ideapad_private *priv, bool send_events)
+{
+ unsigned long value;
+ unsigned char param;
+ int ret;
+
+ /* Without reading from EC touchpad LED doesn't switch state */
+ scoped_guard(mutex, &priv->vpc_mutex)
+ ret = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value);
+ if (ret)
+ return;
+
+ /*
+ * Some IdeaPads don't really turn off touchpad - they only
+ * switch the LED state. We (de)activate KBC AUX port to turn
+ * touchpad off and on. We send KEY_TOUCHPAD_OFF and
+ * KEY_TOUCHPAD_ON to not to get out of sync with LED
+ */
+ if (priv->features.ctrl_ps2_aux_port)
+ i8042_command(¶m, value ? I8042_CMD_AUX_ENABLE : I8042_CMD_AUX_DISABLE);
+
+ /*
+ * On older models the EC controls the touchpad and toggles it on/off
+ * itself, in this case we report KEY_TOUCHPAD_ON/_OFF. Some models do
+ * an acpi-notify with VPC bit 5 set on resume, so this function get
+ * called with send_events=true on every resume. Therefor if the EC did
+ * not toggle, do nothing to avoid sending spurious KEY_TOUCHPAD_TOGGLE.
+ */
+ if (send_events && value != priv->r_touchpad_val) {
+ ideapad_input_report(priv, value ? 67 : 66);
+ sysfs_notify(&priv->platform_device->dev.kobj, NULL, "touchpad");
+ }
+
+ priv->r_touchpad_val = value;
+}
+
+static const struct dmi_system_id ymc_ec_trigger_quirk_dmi_table[] = {
+ {
+ /* Lenovo Yoga 7 14ARB7 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "82QF"),
+ },
+ },
+ {
+ /* Lenovo Yoga 7 14ACN6 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "82N7"),
+ },
+ },
+ { }
+};
+
+static void ideapad_laptop_trigger_ec(void)
+{
+ struct ideapad_private *priv;
+ int ret;
+
+ guard(mutex)(&ideapad_shared_mutex);
+
+ priv = ideapad_shared;
+ if (!priv)
+ return;
+
+ if (!priv->features.ymc_ec_trigger)
+ return;
+
+ scoped_guard(mutex, &priv->vpc_mutex)
+ ret = write_ec_cmd(priv->adev->handle, VPCCMD_W_YMC, 1);
+ if (ret)
+ dev_warn(&priv->platform_device->dev, "Could not write YMC: %d\n", ret);
+}
+
+static int ideapad_laptop_nb_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ switch (action) {
+ case IDEAPAD_LAPTOP_YMC_EVENT:
+ ideapad_laptop_trigger_ec();
+ break;
+ }
+
+ return 0;
+}
+
+static struct notifier_block ideapad_laptop_notifier = {
+ .notifier_call = ideapad_laptop_nb_notify,
+};
+
+static BLOCKING_NOTIFIER_HEAD(ideapad_laptop_chain_head);
+
+int ideapad_laptop_register_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&ideapad_laptop_chain_head, nb);
+}
+EXPORT_SYMBOL_NS_GPL(ideapad_laptop_register_notifier, "IDEAPAD_LAPTOP");
+
+int ideapad_laptop_unregister_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(&ideapad_laptop_chain_head, nb);
+}
+EXPORT_SYMBOL_NS_GPL(ideapad_laptop_unregister_notifier, "IDEAPAD_LAPTOP");
+
+void ideapad_laptop_call_notifier(unsigned long action, void *data)
+{
+ blocking_notifier_call_chain(&ideapad_laptop_chain_head, action, data);
+}
+EXPORT_SYMBOL_NS_GPL(ideapad_laptop_call_notifier, "IDEAPAD_LAPTOP");
+
+static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct ideapad_private *priv = data;
+ unsigned long vpc1, vpc2, bit;
+
+ scoped_guard(mutex, &priv->vpc_mutex) {
+ if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
+ return;
+
+ if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
+ return;
+ }
+
+ vpc1 = (vpc2 << 8) | vpc1;
+
+ for_each_set_bit (bit, &vpc1, 16) {
+ switch (bit) {
+ case 13:
+ case 11:
+ case 8:
+ case 7:
+ case 6:
+ ideapad_input_report(priv, bit);
+ break;
+ case 10:
+ /*
+ * This event gets send on a Yoga 300-11IBR when the EC
+ * believes that the device has changed between laptop/
+ * tent/stand/tablet mode. The EC relies on getting
+ * angle info from 2 accelerometers through a special
+ * windows service calling a DSM on the DUAL250E ACPI-
+ * device. Linux does not do this, making the laptop/
+ * tent/stand/tablet mode info unreliable, so we simply
+ * ignore these events.
+ */
+ break;
+ case 9:
+ ideapad_sync_rfk_state(priv);
+ break;
+ case 5:
+ ideapad_sync_touchpad_state(priv, true);
+ break;
+ case 4:
+ ideapad_backlight_notify_brightness(priv);
+ break;
+ case 3:
+ ideapad_input_novokey(priv);
+ break;
+ case 2:
+ ideapad_backlight_notify_power(priv);
+ break;
+ case KBD_BL_KBLC_CHANGED_EVENT:
+ case 1:
+ /*
+ * Some IdeaPads report event 1 every ~20
+ * seconds while on battery power; some
+ * report this when changing to/from tablet
+ * mode; some report this when the keyboard
+ * backlight has changed.
+ */
+ ideapad_kbd_bl_notify(priv);
+ break;
+ case 0:
+ ideapad_check_special_buttons(priv);
+ break;
+ default:
+ dev_info(&priv->platform_device->dev,
+ "Unknown event: %lu\n", bit);
+ }
+ }
+}
+
+/* On some models we need to call exec_sals(SALS_FNLOCK_ON/OFF) to set the LED */
+static const struct dmi_system_id set_fn_lock_led_list[] = {
+ {
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=212671 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion R7000P2020H"),
+ }
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion 5 15ARH05"),
+ }
+ },
+ {}
+};
+
+/*
+ * Some ideapads have a hardware rfkill switch, but most do not have one.
+ * Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill,
+ * switch causing ideapad_laptop to wrongly report all radios as hw-blocked.
+ * There used to be a long list of DMI ids for models without a hw rfkill
+ * switch here, but that resulted in playing whack a mole.
+ * More importantly wrongly reporting the wifi radio as hw-blocked, results in
+ * non working wifi. Whereas not reporting it hw-blocked, when it actually is
+ * hw-blocked results in an empty SSID list, which is a much more benign
+ * failure mode.
+ * So the default now is the much safer option of assuming there is no
+ * hardware rfkill switch. This default also actually matches most hardware,
+ * since having a hw rfkill switch is quite rare on modern hardware, so this
+ * also leads to a much shorter list.
+ */
+static const struct dmi_system_id hw_rfkill_list[] = {
+ {}
+};
+
+/*
+ * On some models the EC toggles the touchpad muted LED on touchpad toggle
+ * hotkey presses, but the EC does not actually disable the touchpad itself.
+ * On these models the driver needs to explicitly enable/disable the i8042
+ * (PS/2) aux port.
+ */
+static const struct dmi_system_id ctrl_ps2_aux_port_list[] = {
+ {
+ /* Lenovo Ideapad Z570 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
+ },
+ },
+ {}
+};
+
+static void ideapad_check_features(struct ideapad_private *priv)
+{
+ acpi_handle handle = priv->adev->handle;
+ unsigned long val;
+
+ priv->features.set_fn_lock_led =
+ set_fn_lock_led || dmi_check_system(set_fn_lock_led_list);
+ priv->features.hw_rfkill_switch =
+ hw_rfkill_switch || dmi_check_system(hw_rfkill_list);
+ priv->features.ctrl_ps2_aux_port =
+ ctrl_ps2_aux_port || dmi_check_system(ctrl_ps2_aux_port_list);
+ priv->features.touchpad_ctrl_via_ec = touchpad_ctrl_via_ec;
+ priv->features.ymc_ec_trigger =
+ ymc_ec_trigger || dmi_check_system(ymc_ec_trigger_quirk_dmi_table);
+
+ if (!read_ec_data(handle, VPCCMD_R_FAN, &val))
+ priv->features.fan_mode = true;
+
+ if (acpi_has_method(handle, "GBMD") && acpi_has_method(handle, "SBMC"))
+ priv->features.conservation_mode = true;
+
+ if (acpi_has_method(handle, "DYTC"))
+ priv->features.dytc = true;
+
+ if (acpi_has_method(handle, "HALS") && acpi_has_method(handle, "SALS")) {
+ if (!eval_hals(handle, &val)) {
+ if (test_bit(HALS_FNLOCK_SUPPORT_BIT, &val))
+ priv->features.fn_lock = true;
+
+ if (test_bit(HALS_KBD_BL_SUPPORT_BIT, &val)) {
+ priv->features.kbd_bl = true;
+ priv->kbd_bl.type = KBD_BL_STANDARD;
+ }
+
+ if (test_bit(HALS_USB_CHARGING_SUPPORT_BIT, &val))
+ priv->features.usb_charging = true;
+ }
+ }
+
+ if (acpi_has_method(handle, "KBLC")) {
+ if (!eval_kblc(priv->adev->handle, KBD_BL_QUERY_TYPE, &val)) {
+ if (val == KBD_BL_TRISTATE_TYPE) {
+ priv->features.kbd_bl = true;
+ priv->kbd_bl.type = KBD_BL_TRISTATE;
+ } else if (val == KBD_BL_TRISTATE_AUTO_TYPE) {
+ priv->features.kbd_bl = true;
+ priv->kbd_bl.type = KBD_BL_TRISTATE_AUTO;
+ } else {
+ dev_warn(&priv->platform_device->dev,
+ "Unknown keyboard type: %lu",
+ val);
+ }
+ }
+ }
+}
+
+#if IS_ENABLED(CONFIG_ACPI_WMI)
+/*
+ * WMI driver
+ */
+enum ideapad_wmi_event_type {
+ IDEAPAD_WMI_EVENT_ESC,
+ IDEAPAD_WMI_EVENT_FN_KEYS,
+};
+
+struct ideapad_wmi_private {
+ enum ideapad_wmi_event_type event;
+};
+
+static int ideapad_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ struct ideapad_wmi_private *wpriv;
+
+ wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL);
+ if (!wpriv)
+ return -ENOMEM;
+
+ *wpriv = *(const struct ideapad_wmi_private *)context;
+
+ dev_set_drvdata(&wdev->dev, wpriv);
+ return 0;
+}
+
+static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
+{
+ struct ideapad_wmi_private *wpriv = dev_get_drvdata(&wdev->dev);
+ struct ideapad_private *priv;
+
+ guard(mutex)(&ideapad_shared_mutex);
+
+ priv = ideapad_shared;
+ if (!priv)
+ return;
+
+ switch (wpriv->event) {
+ case IDEAPAD_WMI_EVENT_ESC:
+ ideapad_input_report(priv, 128);
+ break;
+ case IDEAPAD_WMI_EVENT_FN_KEYS:
+ if (priv->features.set_fn_lock_led) {
+ int brightness = ideapad_fn_lock_get(priv);
+
+ if (brightness >= 0) {
+ ideapad_fn_lock_set(priv, brightness);
+ ideapad_fn_lock_led_notify(priv, brightness);
+ }
+ }
+
+ if (data->type != ACPI_TYPE_INTEGER) {
+ dev_warn(&wdev->dev,
+ "WMI event data is not an integer\n");
+ break;
+ }
+
+ dev_dbg(&wdev->dev, "WMI fn-key event: 0x%llx\n",
+ data->integer.value);
+
+ /* performance button triggered by 0x3d */
+ if (data->integer.value == 0x3d && priv->dytc) {
+ platform_profile_cycle();
+ break;
+ }
+
+ /* 0x02 FnLock, 0x03 Esc */
+ if (data->integer.value == 0x02 || data->integer.value == 0x03)
+ ideapad_fn_lock_led_notify(priv, data->integer.value == 0x02);
+
+ ideapad_input_report(priv,
+ data->integer.value | IDEAPAD_WMI_KEY);
+
+ break;
+ }
+}
+
+static const struct ideapad_wmi_private ideapad_wmi_context_esc = {
+ .event = IDEAPAD_WMI_EVENT_ESC
+};
+
+static const struct ideapad_wmi_private ideapad_wmi_context_fn_keys = {
+ .event = IDEAPAD_WMI_EVENT_FN_KEYS
+};
+
+static const struct wmi_device_id ideapad_wmi_ids[] = {
+ { "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", &ideapad_wmi_context_esc }, /* Yoga 3 */
+ { "56322276-8493-4CE8-A783-98C991274F5E", &ideapad_wmi_context_esc }, /* Yoga 700 */
+ { "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294", &ideapad_wmi_context_fn_keys }, /* Legion 5 */
+ {},
+};
+MODULE_DEVICE_TABLE(wmi, ideapad_wmi_ids);
+
+static struct wmi_driver ideapad_wmi_driver = {
+ .driver = {
+ .name = "ideapad_wmi",
+ },
+ .id_table = ideapad_wmi_ids,
+ .probe = ideapad_wmi_probe,
+ .notify = ideapad_wmi_notify,
+};
+
+static int ideapad_wmi_driver_register(void)
+{
+ return wmi_driver_register(&ideapad_wmi_driver);
+}
+
+static void ideapad_wmi_driver_unregister(void)
+{
+ return wmi_driver_unregister(&ideapad_wmi_driver);
+}
+
+#else
+static inline int ideapad_wmi_driver_register(void) { return 0; }
+static inline void ideapad_wmi_driver_unregister(void) { }
+#endif
+
+/*
+ * ACPI driver
+ */
+static int ideapad_acpi_add(struct platform_device *pdev)
+{
+ struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
+ struct ideapad_private *priv;
+ acpi_status status;
+ unsigned long cfg;
+ int err, i;
+
+ if (!adev || eval_int(adev->handle, "_CFG", &cfg))
+ return -ENODEV;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev_set_drvdata(&pdev->dev, priv);
+
+ priv->cfg = cfg;
+ priv->adev = adev;
+ priv->platform_device = pdev;
+
+ err = devm_mutex_init(&pdev->dev, &priv->vpc_mutex);
+ if (err)
+ return err;
+
+ ideapad_check_features(priv);
+
+ ideapad_debugfs_init(priv);
+
+ err = ideapad_input_init(priv);
+ if (err)
+ goto input_failed;
+
+ err = ideapad_kbd_bl_init(priv);
+ if (err) {
+ if (err != -ENODEV)
+ dev_warn(&pdev->dev, "Could not set up keyboard backlight LED: %d\n", err);
+ else
+ dev_info(&pdev->dev, "Keyboard backlight control not available\n");
+ }
+
+ err = ideapad_fn_lock_led_init(priv);
+ if (err) {
+ if (err != -ENODEV)
+ dev_warn(&pdev->dev, "Could not set up FnLock LED: %d\n", err);
+ else
+ dev_info(&pdev->dev, "FnLock control not available\n");
+ }
+
+ /*
+ * On some models without a hw-switch (the yoga 2 13 at least)
+ * VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
+ */
+ if (!priv->features.hw_rfkill_switch)
+ write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
+ ideapad_register_rfkill(priv, i);
+
+ ideapad_sync_rfk_state(priv);
+ ideapad_sync_touchpad_state(priv, false);
+
+ err = ideapad_dytc_profile_init(priv);
+ if (err) {
+ if (err != -ENODEV)
+ dev_warn(&pdev->dev, "Could not set up DYTC interface: %d\n", err);
+ else
+ dev_info(&pdev->dev, "DYTC interface is not available\n");
+ }
+
+ if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
+ err = ideapad_backlight_init(priv);
+ if (err && err != -ENODEV)
+ goto backlight_failed;
+ }
+
+ status = acpi_install_notify_handler(adev->handle,
+ ACPI_DEVICE_NOTIFY,
+ ideapad_acpi_notify, priv);
+ if (ACPI_FAILURE(status)) {
+ err = -EIO;
+ goto notification_failed;
+ }
+
+ err = ideapad_shared_init(priv);
+ if (err)
+ goto shared_init_failed;
+
+ ideapad_laptop_register_notifier(&ideapad_laptop_notifier);
+
+ return 0;
+
+shared_init_failed:
+ acpi_remove_notify_handler(priv->adev->handle,
+ ACPI_DEVICE_NOTIFY,
+ ideapad_acpi_notify);
+
+notification_failed:
+ ideapad_backlight_exit(priv);
+
+backlight_failed:
+ ideapad_dytc_profile_exit(priv);
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ ideapad_unregister_rfkill(priv, i);
+
+ ideapad_fn_lock_led_exit(priv);
+ ideapad_kbd_bl_exit(priv);
+ ideapad_input_exit(priv);
+
+input_failed:
+ ideapad_debugfs_exit(priv);
+
+ return err;
+}
+
+static void ideapad_acpi_remove(struct platform_device *pdev)
+{
+ struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
+ int i;
+
+ ideapad_laptop_unregister_notifier(&ideapad_laptop_notifier);
+
+ ideapad_shared_exit(priv);
+
+ acpi_remove_notify_handler(priv->adev->handle,
+ ACPI_DEVICE_NOTIFY,
+ ideapad_acpi_notify);
+
+ ideapad_backlight_exit(priv);
+ ideapad_dytc_profile_exit(priv);
+
+ for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+ ideapad_unregister_rfkill(priv, i);
+
+ ideapad_fn_lock_led_exit(priv);
+ ideapad_kbd_bl_exit(priv);
+ ideapad_input_exit(priv);
+ ideapad_debugfs_exit(priv);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int ideapad_acpi_resume(struct device *dev)
+{
+ struct ideapad_private *priv = dev_get_drvdata(dev);
+
+ ideapad_sync_rfk_state(priv);
+ ideapad_sync_touchpad_state(priv, false);
+
+ if (priv->dytc)
+ dytc_profile_refresh(priv);
+
+ return 0;
+}
+#endif
+static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
+
+static const struct acpi_device_id ideapad_device_ids[] = {
+ {"VPC2004", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
+
+static struct platform_driver ideapad_acpi_driver = {
+ .probe = ideapad_acpi_add,
+ .remove = ideapad_acpi_remove,
+ .driver = {
+ .name = "ideapad_acpi",
+ .pm = &ideapad_pm,
+ .acpi_match_table = ACPI_PTR(ideapad_device_ids),
+ .dev_groups = ideapad_attribute_groups,
+ },
+};
+
+static int __init ideapad_laptop_init(void)
+{
+ int err;
+
+ err = ideapad_wmi_driver_register();
+ if (err)
+ return err;
+
+ err = platform_driver_register(&ideapad_acpi_driver);
+ if (err) {
+ ideapad_wmi_driver_unregister();
+ return err;
+ }
+
+ return 0;
+}
+module_init(ideapad_laptop_init)
+
+static void __exit ideapad_laptop_exit(void)
+{
+ ideapad_wmi_driver_unregister();
+ platform_driver_unregister(&ideapad_acpi_driver);
+}
+module_exit(ideapad_laptop_exit)
+
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("IdeaPad ACPI Extras");
+MODULE_LICENSE("GPL");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ideapad-laptop.h - Lenovo IdeaPad ACPI Extras
+ *
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
+ */
+
+#ifndef _IDEAPAD_LAPTOP_H_
+#define _IDEAPAD_LAPTOP_H_
+
+#include <linux/notifier.h>
+
+enum ideapad_laptop_notifier_actions {
+ IDEAPAD_LAPTOP_YMC_EVENT,
+};
+
+int ideapad_laptop_register_notifier(struct notifier_block *nb);
+int ideapad_laptop_unregister_notifier(struct notifier_block *nb);
+void ideapad_laptop_call_notifier(unsigned long action, void *data);
+
+#endif /* !_IDEAPAD_LAPTOP_H_ */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Think LMI BIOS configuration driver
+ *
+ * Copyright(C) 2019-2021 Lenovo
+ *
+ * Original code from Thinkpad-wmi project https://github.com/iksaif/thinkpad-wmi
+ * Copyright(C) 2017 Corentin Chary <corentin.chary@gmail.com>
+ * Distributed under the GPL-2.0 license
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/array_size.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/mutex.h>
+#include <linux/string_helpers.h>
+#include <linux/types.h>
+#include <linux/dmi.h>
+#include <linux/wmi.h>
+#include "../firmware_attributes_class.h"
+#include "think-lmi.h"
+
+static bool debug_support;
+module_param(debug_support, bool, 0444);
+MODULE_PARM_DESC(debug_support, "Enable debug command support");
+
+/*
+ * Name: BiosSetting
+ * Description: Get item name and settings for current LMI instance.
+ * Type: Query
+ * Returns: "Item,Value"
+ * Example: "WakeOnLAN,Enable"
+ */
+#define LENOVO_BIOS_SETTING_GUID "51F5230E-9677-46CD-A1CF-C0B23EE34DB7"
+
+/*
+ * Name: SetBiosSetting
+ * Description: Change the BIOS setting to the desired value using the SetBiosSetting
+ * class. To save the settings, use the SaveBiosSetting class.
+ * BIOS settings and values are case sensitive.
+ * After making changes to the BIOS settings, you must reboot the computer
+ * before the changes will take effect.
+ * Type: Method
+ * Arguments: "Item,Value,Password,Encoding,KbdLang;"
+ * Example: "WakeOnLAN,Disable,pa55w0rd,ascii,us;"
+ */
+#define LENOVO_SET_BIOS_SETTINGS_GUID "98479A64-33F5-4E33-A707-8E251EBBC3A1"
+
+/*
+ * Name: SaveBiosSettings
+ * Description: Save any pending changes in settings.
+ * Type: Method
+ * Arguments: "Password,Encoding,KbdLang;"
+ * Example: "pa55w0rd,ascii,us;"
+ */
+#define LENOVO_SAVE_BIOS_SETTINGS_GUID "6A4B54EF-A5ED-4D33-9455-B0D9B48DF4B3"
+
+/*
+ * Name: BiosPasswordSettings
+ * Description: Return BIOS Password settings
+ * Type: Query
+ * Returns: PasswordMode, PasswordState, MinLength, MaxLength,
+ * SupportedEncoding, SupportedKeyboard
+ */
+#define LENOVO_BIOS_PASSWORD_SETTINGS_GUID "8ADB159E-1E32-455C-BC93-308A7ED98246"
+
+/*
+ * Name: SetBiosPassword
+ * Description: Change a specific password.
+ * - BIOS settings cannot be changed at the same boot as power-on
+ * passwords (POP) and hard disk passwords (HDP). If you want to change
+ * BIOS settings and POP or HDP, you must reboot the system after changing
+ * one of them.
+ * - A password cannot be set using this method when one does not already
+ * exist. Passwords can only be updated or cleared.
+ * Type: Method
+ * Arguments: "PasswordType,CurrentPassword,NewPassword,Encoding,KbdLang;"
+ * Example: "pop,pa55w0rd,newpa55w0rd,ascii,us;”
+ */
+#define LENOVO_SET_BIOS_PASSWORD_GUID "2651D9FD-911C-4B69-B94E-D0DED5963BD7"
+
+/*
+ * Name: GetBiosSelections
+ * Description: Return a list of valid settings for a given item.
+ * Type: Method
+ * Arguments: "Item"
+ * Returns: "Value1,Value2,Value3,..."
+ * Example:
+ * -> "FlashOverLAN"
+ * <- "Enabled,Disabled"
+ */
+#define LENOVO_GET_BIOS_SELECTIONS_GUID "7364651A-132F-4FE7-ADAA-40C6C7EE2E3B"
+
+/*
+ * Name: DebugCmd
+ * Description: Debug entry method for entering debug commands to the BIOS
+ */
+#define LENOVO_DEBUG_CMD_GUID "7FF47003-3B6C-4E5E-A227-E979824A85D1"
+
+/*
+ * Name: OpcodeIF
+ * Description: Opcode interface which provides the ability to set multiple
+ * parameters and then trigger an action with a final command.
+ * This is particularly useful for simplifying setting passwords.
+ * With this support comes the ability to set System, HDD and NVMe
+ * passwords.
+ * This is currently available on ThinkCenter and ThinkStations platforms
+ */
+#define LENOVO_OPCODE_IF_GUID "DFDDEF2C-57D4-48ce-B196-0FB787D90836"
+
+/*
+ * Name: SetBiosCert
+ * Description: Install BIOS certificate.
+ * Type: Method
+ * Arguments: "Certificate,Password"
+ * You must reboot the computer before the changes will take effect.
+ */
+#define LENOVO_SET_BIOS_CERT_GUID "26861C9F-47E9-44C4-BD8B-DFE7FA2610FE"
+
+/*
+ * Name: UpdateBiosCert
+ * Description: Update BIOS certificate.
+ * Type: Method
+ * Format: "Certificate,Signature"
+ * You must reboot the computer before the changes will take effect.
+ */
+#define LENOVO_UPDATE_BIOS_CERT_GUID "9AA3180A-9750-41F7-B9F7-D5D3B1BAC3CE"
+
+/*
+ * Name: ClearBiosCert
+ * Description: Uninstall BIOS certificate.
+ * Type: Method
+ * Format: "Serial,Signature"
+ * You must reboot the computer before the changes will take effect.
+ */
+#define LENOVO_CLEAR_BIOS_CERT_GUID "B2BC39A7-78DD-4D71-B059-A510DEC44890"
+/*
+ * Name: CertToPassword
+ * Description: Switch from certificate to password authentication.
+ * Type: Method
+ * Format: "Password,Signature"
+ * You must reboot the computer before the changes will take effect.
+ */
+#define LENOVO_CERT_TO_PASSWORD_GUID "0DE8590D-5510-4044-9621-77C227F5A70D"
+
+/*
+ * Name: SetBiosSettingCert
+ * Description: Set attribute using certificate authentication.
+ * Type: Method
+ * Format: "Item,Value,Signature"
+ */
+#define LENOVO_SET_BIOS_SETTING_CERT_GUID "34A008CC-D205-4B62-9E67-31DFA8B90003"
+
+/*
+ * Name: SaveBiosSettingCert
+ * Description: Save any pending changes in settings.
+ * Type: Method
+ * Format: "Signature"
+ */
+#define LENOVO_SAVE_BIOS_SETTING_CERT_GUID "C050FB9D-DF5F-4606-B066-9EFC401B2551"
+
+/*
+ * Name: CertThumbprint
+ * Description: Display Certificate thumbprints
+ * Type: Query
+ * Returns: MD5, SHA1 & SHA256 thumbprints
+ */
+#define LENOVO_CERT_THUMBPRINT_GUID "C59119ED-1C0D-4806-A8E9-59AA318176C4"
+
+#define TLMI_POP_PWD BIT(0) /* Supervisor */
+#define TLMI_PAP_PWD BIT(1) /* Power-on */
+#define TLMI_HDD_PWD BIT(2) /* HDD/NVME */
+#define TLMI_SMP_PWD BIT(6) /* System Management */
+#define TLMI_CERT_SVC BIT(7) /* Admin Certificate Based */
+#define TLMI_CERT_SMC BIT(8) /* System Certificate Based */
+
+static const struct tlmi_err_codes tlmi_errs[] = {
+ {"Success", 0},
+ {"Not Supported", -EOPNOTSUPP},
+ {"Invalid Parameter", -EINVAL},
+ {"Access Denied", -EACCES},
+ {"System Busy", -EBUSY},
+};
+
+static const char * const encoding_options[] = {
+ [TLMI_ENCODING_ASCII] = "ascii",
+ [TLMI_ENCODING_SCANCODE] = "scancode",
+};
+static const char * const level_options[] = {
+ [TLMI_LEVEL_USER] = "user",
+ [TLMI_LEVEL_MASTER] = "master",
+};
+static struct think_lmi tlmi_priv;
+static DEFINE_MUTEX(tlmi_mutex);
+
+static inline struct tlmi_pwd_setting *to_tlmi_pwd_setting(struct kobject *kobj)
+{
+ return container_of(kobj, struct tlmi_pwd_setting, kobj);
+}
+
+static inline struct tlmi_attr_setting *to_tlmi_attr_setting(struct kobject *kobj)
+{
+ return container_of(kobj, struct tlmi_attr_setting, kobj);
+}
+
+/* Convert BIOS WMI error string to suitable error code */
+static int tlmi_errstr_to_err(const char *errstr)
+{
+ int i;
+
+ for (i = 0; i < sizeof(tlmi_errs)/sizeof(struct tlmi_err_codes); i++) {
+ if (!strcmp(tlmi_errs[i].err_str, errstr))
+ return tlmi_errs[i].err_code;
+ }
+ return -EPERM;
+}
+
+/* Extract error string from WMI return buffer */
+static int tlmi_extract_error(const struct acpi_buffer *output)
+{
+ const union acpi_object *obj;
+
+ obj = output->pointer;
+ if (!obj)
+ return -ENOMEM;
+ if (obj->type != ACPI_TYPE_STRING || !obj->string.pointer)
+ return -EIO;
+
+ return tlmi_errstr_to_err(obj->string.pointer);
+}
+
+/* Utility function to execute WMI call to BIOS */
+static int tlmi_simple_call(const char *guid, const char *arg)
+{
+ const struct acpi_buffer input = { strlen(arg), (char *)arg };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+ int i, err;
+
+ /*
+ * Duplicated call required to match BIOS workaround for behavior
+ * seen when WMI accessed via scripting on other OS.
+ */
+ for (i = 0; i < 2; i++) {
+ /* (re)initialize output buffer to default state */
+ output.length = ACPI_ALLOCATE_BUFFER;
+ output.pointer = NULL;
+
+ status = wmi_evaluate_method(guid, 0, 0, &input, &output);
+ if (ACPI_FAILURE(status)) {
+ kfree(output.pointer);
+ return -EIO;
+ }
+ err = tlmi_extract_error(&output);
+ kfree(output.pointer);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+/* Extract output string from WMI return value */
+static int tlmi_extract_output_string(union acpi_object *obj, char **string)
+{
+ char *s;
+
+ if (obj->type != ACPI_TYPE_STRING || !obj->string.pointer)
+ return -EIO;
+
+ s = kstrdup(obj->string.pointer, GFP_KERNEL);
+ if (!s)
+ return -ENOMEM;
+ *string = s;
+ return 0;
+}
+
+/* ------ Core interface functions ------------*/
+
+/* Get password settings from BIOS */
+static int tlmi_get_pwd_settings(struct tlmi_pwdcfg *pwdcfg)
+{
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ const union acpi_object *obj;
+ acpi_status status;
+ int copy_size;
+
+ if (!tlmi_priv.can_get_password_settings)
+ return -EOPNOTSUPP;
+
+ status = wmi_query_block(LENOVO_BIOS_PASSWORD_SETTINGS_GUID, 0,
+ &output);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ obj = output.pointer;
+ if (!obj)
+ return -ENOMEM;
+ if (obj->type != ACPI_TYPE_BUFFER || !obj->buffer.pointer) {
+ kfree(obj);
+ return -EIO;
+ }
+ /*
+ * The size of thinkpad_wmi_pcfg on ThinkStation is larger than ThinkPad.
+ * To make the driver compatible on different brands, we permit it to get
+ * the data in below case.
+ * Settings must have at minimum the core fields available
+ */
+ if (obj->buffer.length < sizeof(struct tlmi_pwdcfg_core)) {
+ pr_warn("Unknown pwdcfg buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return -EIO;
+ }
+
+ copy_size = min_t(size_t, obj->buffer.length, sizeof(struct tlmi_pwdcfg));
+
+ memcpy(pwdcfg, obj->buffer.pointer, copy_size);
+ kfree(obj);
+
+ if (WARN_ON(pwdcfg->core.max_length >= TLMI_PWD_BUFSIZE))
+ pwdcfg->core.max_length = TLMI_PWD_BUFSIZE - 1;
+ return 0;
+}
+
+static int tlmi_save_bios_settings(const char *password)
+{
+ return tlmi_simple_call(LENOVO_SAVE_BIOS_SETTINGS_GUID,
+ password);
+}
+
+static int tlmi_opcode_setting(char *setting, const char *value)
+{
+ char *opcode_str;
+ int ret;
+
+ opcode_str = kasprintf(GFP_KERNEL, "%s:%s;", setting, value);
+ if (!opcode_str)
+ return -ENOMEM;
+
+ ret = tlmi_simple_call(LENOVO_OPCODE_IF_GUID, opcode_str);
+ kfree(opcode_str);
+ return ret;
+}
+
+static int tlmi_setting(struct wmi_device *wdev, int item, char **value)
+{
+ union acpi_object *obj;
+ int ret;
+
+ obj = wmidev_block_query(wdev, item);
+ if (!obj)
+ return -EIO;
+
+ ret = tlmi_extract_output_string(obj, value);
+ kfree(obj);
+
+ return ret;
+}
+
+static int tlmi_get_bios_selections(const char *item, char **value)
+{
+ const struct acpi_buffer input = { strlen(item), (char *)item };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+ int ret;
+
+ status = wmi_evaluate_method(LENOVO_GET_BIOS_SELECTIONS_GUID,
+ 0, 0, &input, &output);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ obj = output.pointer;
+ if (!obj)
+ return -ENODATA;
+
+ ret = tlmi_extract_output_string(obj, value);
+ kfree(obj);
+
+ return ret;
+}
+
+/* ---- Authentication sysfs --------------------------------------------------------- */
+static ssize_t is_enabled_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%d\n", setting->pwd_enabled || setting->cert_installed);
+}
+
+static struct kobj_attribute auth_is_pass_set = __ATTR_RO(is_enabled);
+
+static ssize_t current_password_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ size_t pwdlen;
+
+ pwdlen = strlen(buf);
+ /* pwdlen == 0 is allowed to clear the password */
+ if (pwdlen && ((pwdlen < setting->minlen) || (pwdlen > setting->maxlen)))
+ return -EINVAL;
+
+ strscpy(setting->password, buf, setting->maxlen);
+ /* Strip out CR if one is present, setting password won't work if it is present */
+ strreplace(setting->password, '\n', '\0');
+ return count;
+}
+
+static struct kobj_attribute auth_current_password = __ATTR_WO(current_password);
+
+static ssize_t new_password_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ char *auth_str, *new_pwd;
+ size_t pwdlen;
+ int ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!tlmi_priv.can_set_bios_password)
+ return -EOPNOTSUPP;
+
+ /* Strip out CR if one is present, setting password won't work if it is present */
+ new_pwd = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!new_pwd)
+ return -ENOMEM;
+
+ /* Use lock in case multiple WMI operations needed */
+ mutex_lock(&tlmi_mutex);
+
+ pwdlen = strlen(new_pwd);
+ /* pwdlen == 0 is allowed to clear the password */
+ if (pwdlen && ((pwdlen < setting->minlen) || (pwdlen > setting->maxlen))) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* If opcode support is present use that interface */
+ if (tlmi_priv.opcode_support) {
+ char pwd_type[8];
+
+ /* Special handling required for HDD and NVMe passwords */
+ if (setting == tlmi_priv.pwd_hdd) {
+ if (setting->level == TLMI_LEVEL_USER)
+ sprintf(pwd_type, "uhdp%d", setting->index);
+ else
+ sprintf(pwd_type, "mhdp%d", setting->index);
+ } else if (setting == tlmi_priv.pwd_nvme) {
+ if (setting->level == TLMI_LEVEL_USER)
+ sprintf(pwd_type, "udrp%d", setting->index);
+ else
+ sprintf(pwd_type, "adrp%d", setting->index);
+ } else {
+ sprintf(pwd_type, "%s", setting->pwd_type);
+ }
+
+ ret = tlmi_opcode_setting("WmiOpcodePasswordType", pwd_type);
+ if (ret)
+ goto out;
+
+ /*
+ * Note admin password is not always required if SMPControl enabled in BIOS,
+ * So only set if it's configured.
+ * Let BIOS figure it out - we'll get an error if operation is not permitted
+ */
+ if (tlmi_priv.pwd_admin->pwd_enabled && strlen(tlmi_priv.pwd_admin->password)) {
+ ret = tlmi_opcode_setting("WmiOpcodePasswordAdmin",
+ tlmi_priv.pwd_admin->password);
+ if (ret)
+ goto out;
+ }
+ ret = tlmi_opcode_setting("WmiOpcodePasswordCurrent01", setting->password);
+ if (ret)
+ goto out;
+ ret = tlmi_opcode_setting("WmiOpcodePasswordNew01", new_pwd);
+ if (ret)
+ goto out;
+ ret = tlmi_simple_call(LENOVO_OPCODE_IF_GUID, "WmiOpcodePasswordSetUpdate;");
+ } else {
+ /* Format: 'PasswordType,CurrentPw,NewPw,Encoding,KbdLang;' */
+ auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s,%s,%s;",
+ setting->pwd_type, setting->password, new_pwd,
+ encoding_options[setting->encoding], setting->kbdlang);
+ if (!auth_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ ret = tlmi_simple_call(LENOVO_SET_BIOS_PASSWORD_GUID, auth_str);
+ kfree(auth_str);
+ }
+out:
+ mutex_unlock(&tlmi_mutex);
+ kfree(new_pwd);
+ return ret ?: count;
+}
+
+static struct kobj_attribute auth_new_password = __ATTR_WO(new_password);
+
+static ssize_t min_password_length_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%d\n", setting->minlen);
+}
+
+static struct kobj_attribute auth_min_pass_length = __ATTR_RO(min_password_length);
+
+static ssize_t max_password_length_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%d\n", setting->maxlen);
+}
+static struct kobj_attribute auth_max_pass_length = __ATTR_RO(max_password_length);
+
+static ssize_t mechanism_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ if (setting->cert_installed)
+ return sysfs_emit(buf, "certificate\n");
+ return sysfs_emit(buf, "password\n");
+}
+static struct kobj_attribute auth_mechanism = __ATTR_RO(mechanism);
+
+static ssize_t encoding_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%s\n", encoding_options[setting->encoding]);
+}
+
+static ssize_t encoding_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ int i;
+
+ /* Scan for a matching profile */
+ i = sysfs_match_string(encoding_options, buf);
+ if (i < 0)
+ return -EINVAL;
+
+ setting->encoding = i;
+ return count;
+}
+
+static struct kobj_attribute auth_encoding = __ATTR_RW(encoding);
+
+static ssize_t kbdlang_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%s\n", setting->kbdlang);
+}
+
+static ssize_t kbdlang_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ int length;
+
+ /* Calculate length till '\n' or terminating 0 */
+ length = strchrnul(buf, '\n') - buf;
+ if (!length || length >= TLMI_LANG_MAXLEN)
+ return -EINVAL;
+
+ memcpy(setting->kbdlang, buf, length);
+ setting->kbdlang[length] = '\0';
+ return count;
+}
+
+static struct kobj_attribute auth_kbdlang = __ATTR_RW(kbdlang);
+
+static ssize_t role_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%s\n", setting->role);
+}
+static struct kobj_attribute auth_role = __ATTR_RO(role);
+
+static ssize_t index_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%d\n", setting->index);
+}
+
+static ssize_t index_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ int err, val;
+
+ err = kstrtoint(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ if (val < 0 || val > TLMI_INDEX_MAX)
+ return -EINVAL;
+
+ setting->index = val;
+ return count;
+}
+
+static struct kobj_attribute auth_index = __ATTR_RW(index);
+
+static ssize_t level_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ return sysfs_emit(buf, "%s\n", level_options[setting->level]);
+}
+
+static ssize_t level_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ int i;
+
+ /* Scan for a matching profile */
+ i = sysfs_match_string(level_options, buf);
+ if (i < 0)
+ return -EINVAL;
+
+ setting->level = i;
+ return count;
+}
+
+static struct kobj_attribute auth_level = __ATTR_RW(level);
+
+static char *cert_command(struct tlmi_pwd_setting *setting, const char *arg1, const char *arg2)
+{
+ /* Prepend with SVC or SMC if multicert supported */
+ if (tlmi_priv.pwdcfg.core.password_mode >= TLMI_PWDCFG_MODE_MULTICERT)
+ return kasprintf(GFP_KERNEL, "%s,%s,%s",
+ setting == tlmi_priv.pwd_admin ? "SVC" : "SMC",
+ arg1, arg2);
+ else
+ return kasprintf(GFP_KERNEL, "%s,%s", arg1, arg2);
+}
+
+static ssize_t cert_thumbprint(char *buf, const char *arg, int count)
+{
+ const struct acpi_buffer input = { strlen(arg), (char *)arg };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ const union acpi_object *obj;
+ acpi_status status;
+
+ status = wmi_evaluate_method(LENOVO_CERT_THUMBPRINT_GUID, 0, 0, &input, &output);
+ if (ACPI_FAILURE(status)) {
+ kfree(output.pointer);
+ return -EIO;
+ }
+ obj = output.pointer;
+ if (!obj)
+ return -ENOMEM;
+ if (obj->type != ACPI_TYPE_STRING || !obj->string.pointer) {
+ kfree(output.pointer);
+ return -EIO;
+ }
+ count += sysfs_emit_at(buf, count, "%s : %s\n", arg, (char *)obj->string.pointer);
+ kfree(output.pointer);
+
+ return count;
+}
+
+static char *thumbtypes[] = {"Md5", "Sha1", "Sha256"};
+
+static ssize_t certificate_thumbprint_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ unsigned int i;
+ int count = 0;
+ char *wmistr;
+
+ if (!tlmi_priv.certificate_support || !setting->cert_installed)
+ return -EOPNOTSUPP;
+
+ for (i = 0; i < ARRAY_SIZE(thumbtypes); i++) {
+ if (tlmi_priv.pwdcfg.core.password_mode >= TLMI_PWDCFG_MODE_MULTICERT) {
+ /* Format: 'SVC | SMC, Thumbtype' */
+ wmistr = kasprintf(GFP_KERNEL, "%s,%s",
+ setting == tlmi_priv.pwd_admin ? "SVC" : "SMC",
+ thumbtypes[i]);
+ } else {
+ /* Format: 'Thumbtype' */
+ wmistr = kasprintf(GFP_KERNEL, "%s", thumbtypes[i]);
+ }
+ if (!wmistr)
+ return -ENOMEM;
+ count += cert_thumbprint(buf, wmistr, count);
+ kfree(wmistr);
+ }
+
+ return count;
+}
+
+static struct kobj_attribute auth_cert_thumb = __ATTR_RO(certificate_thumbprint);
+
+static ssize_t cert_to_password_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ char *auth_str, *passwd;
+ int ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!tlmi_priv.certificate_support)
+ return -EOPNOTSUPP;
+
+ if (!setting->cert_installed)
+ return -EINVAL;
+
+ if (!setting->signature || !setting->signature[0])
+ return -EACCES;
+
+ /* Strip out CR if one is present */
+ passwd = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!passwd)
+ return -ENOMEM;
+
+ /* Format: 'Password,Signature' */
+ auth_str = cert_command(setting, passwd, setting->signature);
+ if (!auth_str) {
+ kfree_sensitive(passwd);
+ return -ENOMEM;
+ }
+ ret = tlmi_simple_call(LENOVO_CERT_TO_PASSWORD_GUID, auth_str);
+ kfree(auth_str);
+ kfree_sensitive(passwd);
+
+ return ret ?: count;
+}
+
+static struct kobj_attribute auth_cert_to_password = __ATTR_WO(cert_to_password);
+
+enum cert_install_mode {
+ TLMI_CERT_INSTALL,
+ TLMI_CERT_UPDATE,
+};
+
+static ssize_t certificate_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ enum cert_install_mode install_mode = TLMI_CERT_INSTALL;
+ char *auth_str, *new_cert;
+ const char *serial;
+ char *signature;
+ char *guid;
+ int ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!tlmi_priv.certificate_support)
+ return -EOPNOTSUPP;
+
+ /* If empty then clear installed certificate */
+ if ((buf[0] == '\0') || (buf[0] == '\n')) { /* Clear installed certificate */
+ /* Check that signature is set */
+ if (!setting->signature || !setting->signature[0])
+ return -EACCES;
+
+ /* Format: 'serial#, signature' */
+ serial = dmi_get_system_info(DMI_PRODUCT_SERIAL);
+ if (!serial)
+ return -ENODEV;
+ auth_str = cert_command(setting, serial, setting->signature);
+ if (!auth_str)
+ return -ENOMEM;
+
+ ret = tlmi_simple_call(LENOVO_CLEAR_BIOS_CERT_GUID, auth_str);
+ kfree(auth_str);
+
+ return ret ?: count;
+ }
+
+ /* Strip out CR if one is present */
+ new_cert = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!new_cert)
+ return -ENOMEM;
+
+ if (setting->cert_installed) {
+ /* Certificate is installed so this is an update */
+ install_mode = TLMI_CERT_UPDATE;
+ /* If admin account enabled - need to use its signature */
+ if (tlmi_priv.pwd_admin->pwd_enabled)
+ signature = tlmi_priv.pwd_admin->signature;
+ else
+ signature = setting->signature;
+ } else { /* Cert install */
+ /* Check if SMC and SVC already installed */
+ if ((setting == tlmi_priv.pwd_system) && tlmi_priv.pwd_admin->cert_installed) {
+ /* This gets treated as a cert update */
+ install_mode = TLMI_CERT_UPDATE;
+ signature = tlmi_priv.pwd_admin->signature;
+ } else { /* Regular cert install */
+ install_mode = TLMI_CERT_INSTALL;
+ signature = setting->signature;
+ }
+ }
+
+ if (install_mode == TLMI_CERT_UPDATE) {
+ /* This is a certificate update */
+ if (!signature || !signature[0]) {
+ kfree(new_cert);
+ return -EACCES;
+ }
+ guid = LENOVO_UPDATE_BIOS_CERT_GUID;
+ /* Format: 'Certificate,Signature' */
+ auth_str = cert_command(setting, new_cert, signature);
+ } else {
+ /* This is a fresh install */
+ /* To set admin cert, a password must be enabled */
+ if ((setting == tlmi_priv.pwd_admin) &&
+ (!setting->pwd_enabled || !setting->password[0])) {
+ kfree(new_cert);
+ return -EACCES;
+ }
+ guid = LENOVO_SET_BIOS_CERT_GUID;
+ /* Format: 'Certificate, password' */
+ auth_str = cert_command(setting, new_cert, setting->password);
+ }
+ kfree(new_cert);
+ if (!auth_str)
+ return -ENOMEM;
+
+ ret = tlmi_simple_call(guid, auth_str);
+ kfree(auth_str);
+
+ return ret ?: count;
+}
+
+static struct kobj_attribute auth_certificate = __ATTR_WO(certificate);
+
+static ssize_t signature_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ char *new_signature;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!tlmi_priv.certificate_support)
+ return -EOPNOTSUPP;
+
+ /* Strip out CR if one is present */
+ new_signature = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!new_signature)
+ return -ENOMEM;
+
+ /* Free any previous signature */
+ kfree(setting->signature);
+ setting->signature = new_signature;
+
+ return count;
+}
+
+static struct kobj_attribute auth_signature = __ATTR_WO(signature);
+
+static ssize_t save_signature_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+ char *new_signature;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!tlmi_priv.certificate_support)
+ return -EOPNOTSUPP;
+
+ /* Strip out CR if one is present */
+ new_signature = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!new_signature)
+ return -ENOMEM;
+
+ /* Free any previous signature */
+ kfree(setting->save_signature);
+ setting->save_signature = new_signature;
+
+ return count;
+}
+
+static struct kobj_attribute auth_save_signature = __ATTR_WO(save_signature);
+
+static umode_t auth_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ /* We only want to display level and index settings on HDD/NVMe */
+ if (attr == &auth_index.attr || attr == &auth_level.attr) {
+ if ((setting == tlmi_priv.pwd_hdd) || (setting == tlmi_priv.pwd_nvme))
+ return attr->mode;
+ return 0;
+ }
+
+ /* We only display certificates, if supported */
+ if (attr == &auth_certificate.attr ||
+ attr == &auth_signature.attr ||
+ attr == &auth_save_signature.attr ||
+ attr == &auth_cert_thumb.attr ||
+ attr == &auth_cert_to_password.attr) {
+ if (tlmi_priv.certificate_support) {
+ if (setting == tlmi_priv.pwd_admin)
+ return attr->mode;
+ if ((tlmi_priv.pwdcfg.core.password_mode >= TLMI_PWDCFG_MODE_MULTICERT) &&
+ (setting == tlmi_priv.pwd_system))
+ return attr->mode;
+ }
+ return 0;
+ }
+
+ /* Don't display un-needed settings if opcode available */
+ if ((attr == &auth_encoding.attr || attr == &auth_kbdlang.attr) &&
+ tlmi_priv.opcode_support)
+ return 0;
+
+ return attr->mode;
+}
+
+static struct attribute *auth_attrs[] = {
+ &auth_is_pass_set.attr,
+ &auth_min_pass_length.attr,
+ &auth_max_pass_length.attr,
+ &auth_current_password.attr,
+ &auth_new_password.attr,
+ &auth_role.attr,
+ &auth_mechanism.attr,
+ &auth_encoding.attr,
+ &auth_kbdlang.attr,
+ &auth_index.attr,
+ &auth_level.attr,
+ &auth_certificate.attr,
+ &auth_signature.attr,
+ &auth_save_signature.attr,
+ &auth_cert_thumb.attr,
+ &auth_cert_to_password.attr,
+ NULL
+};
+
+static const struct attribute_group auth_attr_group = {
+ .is_visible = auth_attr_is_visible,
+ .attrs = auth_attrs,
+};
+
+/* ---- Attributes sysfs --------------------------------------------------------- */
+static ssize_t display_name_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+
+ return sysfs_emit(buf, "%s\n", setting->display_name);
+}
+
+static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+ char *item, *value;
+ int ret;
+
+ ret = tlmi_setting(setting->wdev, setting->index, &item);
+ if (ret)
+ return ret;
+
+ /* validate and split from `item,value` -> `value` */
+ value = strpbrk(item, ",");
+ if (!value || value == item || !strlen(value + 1))
+ ret = -EINVAL;
+ else {
+ /* On Workstations remove the Options part after the value */
+ strreplace(value, ';', '\0');
+ ret = sysfs_emit(buf, "%s\n", value + 1);
+ }
+ kfree(item);
+
+ return ret;
+}
+
+static ssize_t possible_values_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+
+ return sysfs_emit(buf, "%s\n", setting->possible_values);
+}
+
+static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+
+ if (setting->possible_values) {
+ /* Figure out what setting type is as BIOS does not return this */
+ if (strchr(setting->possible_values, ';'))
+ return sysfs_emit(buf, "enumeration\n");
+ }
+ /* Anything else is going to be a string */
+ return sysfs_emit(buf, "string\n");
+}
+
+static ssize_t current_value_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+ char *set_str = NULL, *new_setting = NULL;
+ char *auth_str = NULL;
+ int ret;
+
+ if (!tlmi_priv.can_set_bios_settings)
+ return -EOPNOTSUPP;
+
+ /*
+ * If we are using bulk saves a reboot should be done once save has
+ * been called
+ */
+ if (tlmi_priv.save_mode == TLMI_SAVE_BULK && tlmi_priv.reboot_required)
+ return -EPERM;
+
+ /* Strip out CR if one is present */
+ new_setting = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!new_setting)
+ return -ENOMEM;
+
+ /* Use lock in case multiple WMI operations needed */
+ mutex_lock(&tlmi_mutex);
+
+ /* Check if certificate authentication is enabled and active */
+ if (tlmi_priv.certificate_support && tlmi_priv.pwd_admin->cert_installed) {
+ if (!tlmi_priv.pwd_admin->signature || !tlmi_priv.pwd_admin->save_signature) {
+ ret = -EINVAL;
+ goto out;
+ }
+ set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->name,
+ new_setting, tlmi_priv.pwd_admin->signature);
+ if (!set_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = tlmi_simple_call(LENOVO_SET_BIOS_SETTING_CERT_GUID, set_str);
+ if (ret)
+ goto out;
+ if (tlmi_priv.save_mode == TLMI_SAVE_BULK)
+ tlmi_priv.save_required = true;
+ else
+ ret = tlmi_simple_call(LENOVO_SAVE_BIOS_SETTING_CERT_GUID,
+ tlmi_priv.pwd_admin->save_signature);
+ } else if (tlmi_priv.opcode_support) {
+ /*
+ * If opcode support is present use that interface.
+ * Note - this sets the variable and then the password as separate
+ * WMI calls. Function tlmi_save_bios_settings will error if the
+ * password is incorrect.
+ * Workstation's require the opcode to be set before changing the
+ * attribute.
+ */
+ if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
+ ret = tlmi_opcode_setting("WmiOpcodePasswordAdmin",
+ tlmi_priv.pwd_admin->password);
+ if (ret)
+ goto out;
+ }
+
+ set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->name,
+ new_setting);
+ if (!set_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = tlmi_simple_call(LENOVO_SET_BIOS_SETTINGS_GUID, set_str);
+ if (ret)
+ goto out;
+
+ if (tlmi_priv.save_mode == TLMI_SAVE_BULK)
+ tlmi_priv.save_required = true;
+ else
+ ret = tlmi_save_bios_settings("");
+ } else { /* old non-opcode based authentication method (deprecated) */
+ if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
+ auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
+ tlmi_priv.pwd_admin->password,
+ encoding_options[tlmi_priv.pwd_admin->encoding],
+ tlmi_priv.pwd_admin->kbdlang);
+ if (!auth_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ }
+
+ if (auth_str)
+ set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->name,
+ new_setting, auth_str);
+ else
+ set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->name,
+ new_setting);
+ if (!set_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = tlmi_simple_call(LENOVO_SET_BIOS_SETTINGS_GUID, set_str);
+ if (ret)
+ goto out;
+
+ if (tlmi_priv.save_mode == TLMI_SAVE_BULK) {
+ tlmi_priv.save_required = true;
+ } else {
+ if (auth_str)
+ ret = tlmi_save_bios_settings(auth_str);
+ else
+ ret = tlmi_save_bios_settings("");
+ }
+ }
+ if (!ret && !tlmi_priv.pending_changes) {
+ tlmi_priv.pending_changes = true;
+ /* let userland know it may need to check reboot pending again */
+ kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
+ }
+out:
+ mutex_unlock(&tlmi_mutex);
+ kfree(auth_str);
+ kfree(set_str);
+ kfree(new_setting);
+ return ret ?: count;
+}
+
+static struct kobj_attribute attr_displ_name = __ATTR_RO(display_name);
+
+static struct kobj_attribute attr_possible_values = __ATTR_RO(possible_values);
+
+static struct kobj_attribute attr_current_val = __ATTR_RW_MODE(current_value, 0600);
+
+static struct kobj_attribute attr_type = __ATTR_RO(type);
+
+static umode_t attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+
+ /* We don't want to display possible_values attributes if not available */
+ if ((attr == &attr_possible_values.attr) && (!setting->possible_values))
+ return 0;
+
+ return attr->mode;
+}
+
+static struct attribute *tlmi_attrs[] = {
+ &attr_displ_name.attr,
+ &attr_current_val.attr,
+ &attr_possible_values.attr,
+ &attr_type.attr,
+ NULL
+};
+
+static const struct attribute_group tlmi_attr_group = {
+ .is_visible = attr_is_visible,
+ .attrs = tlmi_attrs,
+};
+
+static void tlmi_attr_setting_release(struct kobject *kobj)
+{
+ struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
+
+ kfree(setting->possible_values);
+ kfree(setting);
+}
+
+static void tlmi_pwd_setting_release(struct kobject *kobj)
+{
+ struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
+
+ kfree(setting);
+}
+
+static const struct kobj_type tlmi_attr_setting_ktype = {
+ .release = &tlmi_attr_setting_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+static const struct kobj_type tlmi_pwd_setting_ktype = {
+ .release = &tlmi_pwd_setting_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+};
+
+static ssize_t pending_reboot_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", tlmi_priv.pending_changes);
+}
+
+static struct kobj_attribute pending_reboot = __ATTR_RO(pending_reboot);
+
+static const char * const save_mode_strings[] = {
+ [TLMI_SAVE_SINGLE] = "single",
+ [TLMI_SAVE_BULK] = "bulk",
+ [TLMI_SAVE_SAVE] = "save"
+};
+
+static ssize_t save_settings_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ /* Check that setting is valid */
+ if (WARN_ON(tlmi_priv.save_mode < TLMI_SAVE_SINGLE ||
+ tlmi_priv.save_mode > TLMI_SAVE_BULK))
+ return -EIO;
+ return sysfs_emit(buf, "%s\n", save_mode_strings[tlmi_priv.save_mode]);
+}
+
+static ssize_t save_settings_store(struct kobject *kobj, struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ char *auth_str = NULL;
+ int ret = 0;
+ int cmd;
+
+ cmd = sysfs_match_string(save_mode_strings, buf);
+ if (cmd < 0)
+ return cmd;
+
+ /* Use lock in case multiple WMI operations needed */
+ mutex_lock(&tlmi_mutex);
+
+ switch (cmd) {
+ case TLMI_SAVE_SINGLE:
+ case TLMI_SAVE_BULK:
+ tlmi_priv.save_mode = cmd;
+ goto out;
+ case TLMI_SAVE_SAVE:
+ /* Check if supported*/
+ if (!tlmi_priv.can_set_bios_settings ||
+ tlmi_priv.save_mode == TLMI_SAVE_SINGLE) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+ /* Check there is actually something to save */
+ if (!tlmi_priv.save_required) {
+ ret = -ENOENT;
+ goto out;
+ }
+ /* Check if certificate authentication is enabled and active */
+ if (tlmi_priv.certificate_support && tlmi_priv.pwd_admin->cert_installed) {
+ if (!tlmi_priv.pwd_admin->signature ||
+ !tlmi_priv.pwd_admin->save_signature) {
+ ret = -EINVAL;
+ goto out;
+ }
+ ret = tlmi_simple_call(LENOVO_SAVE_BIOS_SETTING_CERT_GUID,
+ tlmi_priv.pwd_admin->save_signature);
+ if (ret)
+ goto out;
+ } else if (tlmi_priv.opcode_support) {
+ if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
+ ret = tlmi_opcode_setting("WmiOpcodePasswordAdmin",
+ tlmi_priv.pwd_admin->password);
+ if (ret)
+ goto out;
+ }
+ ret = tlmi_save_bios_settings("");
+ } else { /* old non-opcode based authentication method (deprecated) */
+ if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
+ auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
+ tlmi_priv.pwd_admin->password,
+ encoding_options[tlmi_priv.pwd_admin->encoding],
+ tlmi_priv.pwd_admin->kbdlang);
+ if (!auth_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ }
+
+ if (auth_str)
+ ret = tlmi_save_bios_settings(auth_str);
+ else
+ ret = tlmi_save_bios_settings("");
+ }
+ tlmi_priv.save_required = false;
+ tlmi_priv.reboot_required = true;
+
+ if (!ret && !tlmi_priv.pending_changes) {
+ tlmi_priv.pending_changes = true;
+ /* let userland know it may need to check reboot pending again */
+ kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
+ }
+ break;
+ }
+out:
+ mutex_unlock(&tlmi_mutex);
+ kfree(auth_str);
+ return ret ?: count;
+}
+
+static struct kobj_attribute save_settings = __ATTR_RW(save_settings);
+
+/* ---- Debug interface--------------------------------------------------------- */
+static ssize_t debug_cmd_store(struct kobject *kobj, struct kobj_attribute *attr,
+ const char *buf, size_t count)
+{
+ char *set_str = NULL, *new_setting = NULL;
+ char *auth_str = NULL;
+ int ret;
+
+ if (!tlmi_priv.can_debug_cmd)
+ return -EOPNOTSUPP;
+
+ /* Strip out CR if one is present */
+ new_setting = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
+ if (!new_setting)
+ return -ENOMEM;
+
+ if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
+ auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
+ tlmi_priv.pwd_admin->password,
+ encoding_options[tlmi_priv.pwd_admin->encoding],
+ tlmi_priv.pwd_admin->kbdlang);
+ if (!auth_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ }
+
+ if (auth_str)
+ set_str = kasprintf(GFP_KERNEL, "%s,%s", new_setting, auth_str);
+ else
+ set_str = kasprintf(GFP_KERNEL, "%s;", new_setting);
+ if (!set_str) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = tlmi_simple_call(LENOVO_DEBUG_CMD_GUID, set_str);
+ if (ret)
+ goto out;
+
+ if (!ret && !tlmi_priv.pending_changes) {
+ tlmi_priv.pending_changes = true;
+ /* let userland know it may need to check reboot pending again */
+ kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
+ }
+out:
+ kfree(auth_str);
+ kfree(set_str);
+ kfree(new_setting);
+ return ret ?: count;
+}
+
+static struct kobj_attribute debug_cmd = __ATTR_WO(debug_cmd);
+
+/* ---- Initialisation --------------------------------------------------------- */
+static void tlmi_release_attr(void)
+{
+ int i;
+
+ /* Attribute structures */
+ for (i = 0; i < TLMI_SETTINGS_COUNT; i++) {
+ if (tlmi_priv.setting[i]) {
+ sysfs_remove_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
+ kobject_put(&tlmi_priv.setting[i]->kobj);
+ }
+ }
+ sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
+ sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &save_settings.attr);
+
+ if (tlmi_priv.can_debug_cmd && debug_support)
+ sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &debug_cmd.attr);
+
+ kset_unregister(tlmi_priv.attribute_kset);
+
+ /* Free up any saved signatures */
+ kfree(tlmi_priv.pwd_admin->signature);
+ kfree(tlmi_priv.pwd_admin->save_signature);
+
+ /* Authentication structures */
+ sysfs_remove_group(&tlmi_priv.pwd_admin->kobj, &auth_attr_group);
+ kobject_put(&tlmi_priv.pwd_admin->kobj);
+ sysfs_remove_group(&tlmi_priv.pwd_power->kobj, &auth_attr_group);
+ kobject_put(&tlmi_priv.pwd_power->kobj);
+
+ if (tlmi_priv.opcode_support) {
+ sysfs_remove_group(&tlmi_priv.pwd_system->kobj, &auth_attr_group);
+ kobject_put(&tlmi_priv.pwd_system->kobj);
+ sysfs_remove_group(&tlmi_priv.pwd_hdd->kobj, &auth_attr_group);
+ kobject_put(&tlmi_priv.pwd_hdd->kobj);
+ sysfs_remove_group(&tlmi_priv.pwd_nvme->kobj, &auth_attr_group);
+ kobject_put(&tlmi_priv.pwd_nvme->kobj);
+ }
+
+ kset_unregister(tlmi_priv.authentication_kset);
+}
+
+static int tlmi_validate_setting_name(struct kset *attribute_kset, char *name)
+{
+ struct kobject *duplicate;
+
+ if (!strcmp(name, "Reserved"))
+ return -EINVAL;
+
+ duplicate = kset_find_obj(attribute_kset, name);
+ if (duplicate) {
+ pr_debug("Duplicate attribute name found - %s\n", name);
+ /* kset_find_obj() returns a reference */
+ kobject_put(duplicate);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int tlmi_sysfs_init(void)
+{
+ int i, ret;
+
+ tlmi_priv.class_dev = device_create(&firmware_attributes_class, NULL, MKDEV(0, 0),
+ NULL, "%s", "thinklmi");
+ if (IS_ERR(tlmi_priv.class_dev)) {
+ ret = PTR_ERR(tlmi_priv.class_dev);
+ goto fail_class_created;
+ }
+
+ tlmi_priv.attribute_kset = kset_create_and_add("attributes", NULL,
+ &tlmi_priv.class_dev->kobj);
+ if (!tlmi_priv.attribute_kset) {
+ ret = -ENOMEM;
+ goto fail_device_created;
+ }
+
+ for (i = 0; i < TLMI_SETTINGS_COUNT; i++) {
+ /* Check if index is a valid setting - skip if it isn't */
+ if (!tlmi_priv.setting[i])
+ continue;
+
+ /* check for duplicate or reserved values */
+ if (tlmi_validate_setting_name(tlmi_priv.attribute_kset,
+ tlmi_priv.setting[i]->display_name) < 0) {
+ kfree(tlmi_priv.setting[i]->possible_values);
+ kfree(tlmi_priv.setting[i]);
+ tlmi_priv.setting[i] = NULL;
+ continue;
+ }
+
+ /* Build attribute */
+ tlmi_priv.setting[i]->kobj.kset = tlmi_priv.attribute_kset;
+ ret = kobject_add(&tlmi_priv.setting[i]->kobj, NULL,
+ "%s", tlmi_priv.setting[i]->display_name);
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
+ if (ret)
+ goto fail_create_attr;
+ }
+
+ ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &save_settings.attr);
+ if (ret)
+ goto fail_create_attr;
+
+ if (tlmi_priv.can_debug_cmd && debug_support) {
+ ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &debug_cmd.attr);
+ if (ret)
+ goto fail_create_attr;
+ }
+
+ /* Create authentication entries */
+ tlmi_priv.authentication_kset = kset_create_and_add("authentication", NULL,
+ &tlmi_priv.class_dev->kobj);
+ if (!tlmi_priv.authentication_kset) {
+ ret = -ENOMEM;
+ goto fail_create_attr;
+ }
+ tlmi_priv.pwd_admin->kobj.kset = tlmi_priv.authentication_kset;
+ ret = kobject_add(&tlmi_priv.pwd_admin->kobj, NULL, "%s", "Admin");
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_group(&tlmi_priv.pwd_admin->kobj, &auth_attr_group);
+ if (ret)
+ goto fail_create_attr;
+
+ tlmi_priv.pwd_power->kobj.kset = tlmi_priv.authentication_kset;
+ ret = kobject_add(&tlmi_priv.pwd_power->kobj, NULL, "%s", "Power-on");
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_group(&tlmi_priv.pwd_power->kobj, &auth_attr_group);
+ if (ret)
+ goto fail_create_attr;
+
+ if (tlmi_priv.opcode_support) {
+ tlmi_priv.pwd_system->kobj.kset = tlmi_priv.authentication_kset;
+ ret = kobject_add(&tlmi_priv.pwd_system->kobj, NULL, "%s", "System");
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_group(&tlmi_priv.pwd_system->kobj, &auth_attr_group);
+ if (ret)
+ goto fail_create_attr;
+
+ tlmi_priv.pwd_hdd->kobj.kset = tlmi_priv.authentication_kset;
+ ret = kobject_add(&tlmi_priv.pwd_hdd->kobj, NULL, "%s", "HDD");
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_group(&tlmi_priv.pwd_hdd->kobj, &auth_attr_group);
+ if (ret)
+ goto fail_create_attr;
+
+ tlmi_priv.pwd_nvme->kobj.kset = tlmi_priv.authentication_kset;
+ ret = kobject_add(&tlmi_priv.pwd_nvme->kobj, NULL, "%s", "NVMe");
+ if (ret)
+ goto fail_create_attr;
+
+ ret = sysfs_create_group(&tlmi_priv.pwd_nvme->kobj, &auth_attr_group);
+ if (ret)
+ goto fail_create_attr;
+ }
+
+ return ret;
+
+fail_create_attr:
+ tlmi_release_attr();
+fail_device_created:
+ device_destroy(&firmware_attributes_class, MKDEV(0, 0));
+fail_class_created:
+ return ret;
+}
+
+/* ---- Base Driver -------------------------------------------------------- */
+static struct tlmi_pwd_setting *tlmi_create_auth(const char *pwd_type,
+ const char *pwd_role)
+{
+ struct tlmi_pwd_setting *new_pwd;
+
+ new_pwd = kzalloc(sizeof(struct tlmi_pwd_setting), GFP_KERNEL);
+ if (!new_pwd)
+ return NULL;
+
+ strscpy(new_pwd->kbdlang, "us");
+ new_pwd->encoding = TLMI_ENCODING_ASCII;
+ new_pwd->pwd_type = pwd_type;
+ new_pwd->role = pwd_role;
+ new_pwd->minlen = tlmi_priv.pwdcfg.core.min_length;
+ new_pwd->maxlen = tlmi_priv.pwdcfg.core.max_length;
+ new_pwd->index = 0;
+
+ kobject_init(&new_pwd->kobj, &tlmi_pwd_setting_ktype);
+
+ return new_pwd;
+}
+
+static int tlmi_analyze(struct wmi_device *wdev)
+{
+ int i, ret;
+
+ if (wmi_has_guid(LENOVO_SET_BIOS_SETTINGS_GUID) &&
+ wmi_has_guid(LENOVO_SAVE_BIOS_SETTINGS_GUID))
+ tlmi_priv.can_set_bios_settings = true;
+
+ if (wmi_has_guid(LENOVO_GET_BIOS_SELECTIONS_GUID))
+ tlmi_priv.can_get_bios_selections = true;
+
+ if (wmi_has_guid(LENOVO_SET_BIOS_PASSWORD_GUID))
+ tlmi_priv.can_set_bios_password = true;
+
+ if (wmi_has_guid(LENOVO_BIOS_PASSWORD_SETTINGS_GUID))
+ tlmi_priv.can_get_password_settings = true;
+
+ if (wmi_has_guid(LENOVO_DEBUG_CMD_GUID))
+ tlmi_priv.can_debug_cmd = true;
+
+ if (wmi_has_guid(LENOVO_OPCODE_IF_GUID))
+ tlmi_priv.opcode_support = true;
+
+ if (wmi_has_guid(LENOVO_SET_BIOS_CERT_GUID) &&
+ wmi_has_guid(LENOVO_SET_BIOS_SETTING_CERT_GUID) &&
+ wmi_has_guid(LENOVO_SAVE_BIOS_SETTING_CERT_GUID))
+ tlmi_priv.certificate_support = true;
+
+ /*
+ * Try to find the number of valid settings of this machine
+ * and use it to create sysfs attributes.
+ */
+ for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) {
+ struct tlmi_attr_setting *setting;
+ char *item = NULL;
+
+ tlmi_priv.setting[i] = NULL;
+ ret = tlmi_setting(wdev, i, &item);
+ if (ret)
+ break;
+ if (!item)
+ break;
+ if (!*item) {
+ kfree(item);
+ continue;
+ }
+
+ /* Remove the value part */
+ strreplace(item, ',', '\0');
+
+ /* Create a setting entry */
+ setting = kzalloc(sizeof(*setting), GFP_KERNEL);
+ if (!setting) {
+ ret = -ENOMEM;
+ kfree(item);
+ goto fail_clear_attr;
+ }
+ setting->wdev = wdev;
+ setting->index = i;
+
+ strscpy(setting->name, item);
+ /* It is not allowed to have '/' for file name. Convert it into '\'. */
+ strreplace(item, '/', '\\');
+ strscpy(setting->display_name, item);
+
+ /* If BIOS selections supported, load those */
+ if (tlmi_priv.can_get_bios_selections) {
+ ret = tlmi_get_bios_selections(setting->name,
+ &setting->possible_values);
+ if (ret || !setting->possible_values)
+ pr_info("Error retrieving possible values for %d : %s\n",
+ i, setting->display_name);
+ } else {
+ /*
+ * Older Thinkstations don't support the bios_selections API.
+ * Instead they store this as a [Optional:Option1,Option2] section of the
+ * name string.
+ * Try and pull that out if it's available.
+ */
+ char *optitem, *optstart, *optend;
+
+ if (!tlmi_setting(setting->wdev, setting->index, &optitem)) {
+ optstart = strstr(optitem, "[Optional:");
+ if (optstart) {
+ optstart += strlen("[Optional:");
+ optend = strstr(optstart, "]");
+ if (optend)
+ setting->possible_values =
+ kstrndup(optstart, optend - optstart,
+ GFP_KERNEL);
+ }
+ kfree(optitem);
+ }
+ }
+ /*
+ * firmware-attributes requires that possible_values are separated by ';' but
+ * Lenovo FW uses ','. Replace appropriately.
+ */
+ if (setting->possible_values)
+ strreplace(setting->possible_values, ',', ';');
+
+ kobject_init(&setting->kobj, &tlmi_attr_setting_ktype);
+ tlmi_priv.setting[i] = setting;
+ kfree(item);
+ }
+
+ /* Create password setting structure */
+ ret = tlmi_get_pwd_settings(&tlmi_priv.pwdcfg);
+ if (ret)
+ goto fail_clear_attr;
+
+ /* All failures below boil down to kmalloc failures */
+ ret = -ENOMEM;
+
+ tlmi_priv.pwd_admin = tlmi_create_auth("pap", "bios-admin");
+ if (!tlmi_priv.pwd_admin)
+ goto fail_clear_attr;
+
+ if (tlmi_priv.pwdcfg.core.password_state & TLMI_PAP_PWD)
+ tlmi_priv.pwd_admin->pwd_enabled = true;
+
+ tlmi_priv.pwd_power = tlmi_create_auth("pop", "power-on");
+ if (!tlmi_priv.pwd_power)
+ goto fail_clear_attr;
+
+ if (tlmi_priv.pwdcfg.core.password_state & TLMI_POP_PWD)
+ tlmi_priv.pwd_power->pwd_enabled = true;
+
+ if (tlmi_priv.opcode_support) {
+ tlmi_priv.pwd_system = tlmi_create_auth("smp", "system");
+ if (!tlmi_priv.pwd_system)
+ goto fail_clear_attr;
+
+ if (tlmi_priv.pwdcfg.core.password_state & TLMI_SMP_PWD)
+ tlmi_priv.pwd_system->pwd_enabled = true;
+
+ tlmi_priv.pwd_hdd = tlmi_create_auth("hdd", "hdd");
+ if (!tlmi_priv.pwd_hdd)
+ goto fail_clear_attr;
+
+ tlmi_priv.pwd_nvme = tlmi_create_auth("nvm", "nvme");
+ if (!tlmi_priv.pwd_nvme)
+ goto fail_clear_attr;
+
+ /* Set default hdd/nvme index to 1 as there is no device 0 */
+ tlmi_priv.pwd_hdd->index = 1;
+ tlmi_priv.pwd_nvme->index = 1;
+
+ if (tlmi_priv.pwdcfg.core.password_state & TLMI_HDD_PWD) {
+ /* Check if PWD is configured and set index to first drive found */
+ if (tlmi_priv.pwdcfg.ext.hdd_user_password ||
+ tlmi_priv.pwdcfg.ext.hdd_master_password) {
+ tlmi_priv.pwd_hdd->pwd_enabled = true;
+ if (tlmi_priv.pwdcfg.ext.hdd_master_password)
+ tlmi_priv.pwd_hdd->index =
+ ffs(tlmi_priv.pwdcfg.ext.hdd_master_password) - 1;
+ else
+ tlmi_priv.pwd_hdd->index =
+ ffs(tlmi_priv.pwdcfg.ext.hdd_user_password) - 1;
+ }
+ if (tlmi_priv.pwdcfg.ext.nvme_user_password ||
+ tlmi_priv.pwdcfg.ext.nvme_master_password) {
+ tlmi_priv.pwd_nvme->pwd_enabled = true;
+ if (tlmi_priv.pwdcfg.ext.nvme_master_password)
+ tlmi_priv.pwd_nvme->index =
+ ffs(tlmi_priv.pwdcfg.ext.nvme_master_password) - 1;
+ else
+ tlmi_priv.pwd_nvme->index =
+ ffs(tlmi_priv.pwdcfg.ext.nvme_user_password) - 1;
+ }
+ }
+ }
+
+ if (tlmi_priv.certificate_support) {
+ tlmi_priv.pwd_admin->cert_installed =
+ tlmi_priv.pwdcfg.core.password_state & TLMI_CERT_SVC;
+ tlmi_priv.pwd_system->cert_installed =
+ tlmi_priv.pwdcfg.core.password_state & TLMI_CERT_SMC;
+ }
+ return 0;
+
+fail_clear_attr:
+ for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) {
+ if (tlmi_priv.setting[i]) {
+ kfree(tlmi_priv.setting[i]->possible_values);
+ kfree(tlmi_priv.setting[i]);
+ }
+ }
+ kfree(tlmi_priv.pwd_admin);
+ kfree(tlmi_priv.pwd_power);
+ kfree(tlmi_priv.pwd_system);
+ kfree(tlmi_priv.pwd_hdd);
+ kfree(tlmi_priv.pwd_nvme);
+ return ret;
+}
+
+static void tlmi_remove(struct wmi_device *wdev)
+{
+ tlmi_release_attr();
+ device_destroy(&firmware_attributes_class, MKDEV(0, 0));
+}
+
+static int tlmi_probe(struct wmi_device *wdev, const void *context)
+{
+ int ret;
+
+ ret = tlmi_analyze(wdev);
+ if (ret)
+ return ret;
+
+ return tlmi_sysfs_init();
+}
+
+static const struct wmi_device_id tlmi_id_table[] = {
+ { .guid_string = LENOVO_BIOS_SETTING_GUID },
+ { }
+};
+MODULE_DEVICE_TABLE(wmi, tlmi_id_table);
+
+static struct wmi_driver tlmi_driver = {
+ .driver = {
+ .name = "think-lmi",
+ },
+ .id_table = tlmi_id_table,
+ .probe = tlmi_probe,
+ .remove = tlmi_remove,
+};
+
+MODULE_AUTHOR("Sugumaran L <slacshiminar@lenovo.com>");
+MODULE_AUTHOR("Mark Pearson <markpearson@lenovo.com>");
+MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");
+MODULE_DESCRIPTION("ThinkLMI Driver");
+MODULE_LICENSE("GPL");
+
+module_wmi_driver(tlmi_driver);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _THINK_LMI_H_
+#define _THINK_LMI_H_
+
+#include <linux/types.h>
+#include <linux/wmi.h>
+
+#define TLMI_SETTINGS_COUNT 256
+#define TLMI_SETTINGS_MAXLEN 512
+#define TLMI_PWD_BUFSIZE 129
+#define TLMI_LANG_MAXLEN 4
+#define TLMI_INDEX_MAX 32
+
+/* Possible error values */
+struct tlmi_err_codes {
+ const char *err_str;
+ int err_code;
+};
+
+enum encoding_option {
+ TLMI_ENCODING_ASCII,
+ TLMI_ENCODING_SCANCODE,
+};
+
+enum level_option {
+ TLMI_LEVEL_USER,
+ TLMI_LEVEL_MASTER,
+};
+
+/*
+ * There are a limit on the number of WMI operations you can do if you use
+ * the default implementation of saving on every set. This is due to a
+ * limitation in EFI variable space used.
+ * Have a 'bulk save' mode where you can manually trigger the save, and can
+ * therefore set unlimited variables - for users that need it.
+ */
+enum save_mode {
+ TLMI_SAVE_SINGLE,
+ TLMI_SAVE_BULK,
+ TLMI_SAVE_SAVE,
+};
+
+/* password configuration details */
+#define TLMI_PWDCFG_MODE_LEGACY 0
+#define TLMI_PWDCFG_MODE_PASSWORD 1
+#define TLMI_PWDCFG_MODE_MULTICERT 3
+
+struct tlmi_pwdcfg_core {
+ uint32_t password_mode;
+ uint32_t password_state;
+ uint32_t min_length;
+ uint32_t max_length;
+ uint32_t supported_encodings;
+ uint32_t supported_keyboard;
+};
+
+struct tlmi_pwdcfg_ext {
+ uint32_t hdd_user_password;
+ uint32_t hdd_master_password;
+ uint32_t nvme_user_password;
+ uint32_t nvme_master_password;
+};
+
+struct tlmi_pwdcfg {
+ struct tlmi_pwdcfg_core core;
+ struct tlmi_pwdcfg_ext ext;
+};
+
+/* password setting details */
+struct tlmi_pwd_setting {
+ struct kobject kobj;
+ bool pwd_enabled;
+ char password[TLMI_PWD_BUFSIZE];
+ const char *pwd_type;
+ const char *role;
+ int minlen;
+ int maxlen;
+ enum encoding_option encoding;
+ char kbdlang[TLMI_LANG_MAXLEN];
+ int index; /*Used for HDD and NVME auth */
+ enum level_option level;
+ bool cert_installed;
+ char *signature;
+ char *save_signature;
+};
+
+/* Attribute setting details */
+struct tlmi_attr_setting {
+ struct kobject kobj;
+ struct wmi_device *wdev;
+ int index;
+ char name[TLMI_SETTINGS_MAXLEN];
+ char display_name[TLMI_SETTINGS_MAXLEN];
+ char *possible_values;
+};
+
+struct think_lmi {
+ struct wmi_device *wmi_device;
+
+ bool can_set_bios_settings;
+ bool can_get_bios_selections;
+ bool can_set_bios_password;
+ bool can_get_password_settings;
+ bool pending_changes;
+ bool can_debug_cmd;
+ bool opcode_support;
+ bool certificate_support;
+ enum save_mode save_mode;
+ bool save_required;
+ bool reboot_required;
+
+ struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
+ struct device *class_dev;
+ struct kset *attribute_kset;
+ struct kset *authentication_kset;
+
+ struct tlmi_pwdcfg pwdcfg;
+ struct tlmi_pwd_setting *pwd_admin;
+ struct tlmi_pwd_setting *pwd_power;
+ struct tlmi_pwd_setting *pwd_system;
+ struct tlmi_pwd_setting *pwd_hdd;
+ struct tlmi_pwd_setting *pwd_nvme;
+};
+
+#endif /* !_THINK_LMI_H_ */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * thinkpad_acpi.c - ThinkPad ACPI Extras
+ *
+ * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
+ * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define TPACPI_VERSION "0.26"
+#define TPACPI_SYSFS_VERSION 0x030000
+
+/*
+ * Changelog:
+ * 2007-10-20 changelog trimmed down
+ *
+ * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
+ * drivers/misc.
+ *
+ * 2006-11-22 0.13 new maintainer
+ * changelog now lives in git commit history, and will
+ * not be updated further in-file.
+ *
+ * 2005-03-17 0.11 support for 600e, 770x
+ * thanks to Jamie Lentin <lentinj@dial.pipex.com>
+ *
+ * 2005-01-16 0.9 use MODULE_VERSION
+ * thanks to Henrik Brix Andersen <brix@gentoo.org>
+ * fix parameter passing on module loading
+ * thanks to Rusty Russell <rusty@rustcorp.com.au>
+ * thanks to Jim Radford <radford@blackbean.org>
+ * 2004-11-08 0.8 fix init error case, don't return from a macro
+ * thanks to Chris Wright <chrisw@osdl.org>
+ */
+
+#include <linux/acpi.h>
+#include <linux/backlight.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/dmi.h>
+#include <linux/freezer.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/leds.h>
+#include <linux/list.h>
+#include <linux/lockdep.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/nvram.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/platform_profile.h>
+#include <linux/power_supply.h>
+#include <linux/proc_fs.h>
+#include <linux/rfkill.h>
+#include <linux/sched.h>
+#include <linux/sched/signal.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/string_helpers.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+#include <linux/units.h>
+#include <linux/workqueue.h>
+
+#include <acpi/battery.h>
+#include <acpi/video.h>
+
+#include <drm/drm_privacy_screen_driver.h>
+
+#include <sound/control.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+
+#include "../dual_accel_detect.h"
+
+/* ThinkPad CMOS commands */
+#define TP_CMOS_VOLUME_DOWN 0
+#define TP_CMOS_VOLUME_UP 1
+#define TP_CMOS_VOLUME_MUTE 2
+#define TP_CMOS_BRIGHTNESS_UP 4
+#define TP_CMOS_BRIGHTNESS_DOWN 5
+#define TP_CMOS_THINKLIGHT_ON 12
+#define TP_CMOS_THINKLIGHT_OFF 13
+
+/* NVRAM Addresses */
+enum tp_nvram_addr {
+ TP_NVRAM_ADDR_HK2 = 0x57,
+ TP_NVRAM_ADDR_THINKLIGHT = 0x58,
+ TP_NVRAM_ADDR_VIDEO = 0x59,
+ TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
+ TP_NVRAM_ADDR_MIXER = 0x60,
+};
+
+/* NVRAM bit masks */
+enum {
+ TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
+ TP_NVRAM_MASK_HKT_ZOOM = 0x20,
+ TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
+ TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
+ TP_NVRAM_MASK_THINKLIGHT = 0x10,
+ TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
+ TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
+ TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
+ TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
+ TP_NVRAM_MASK_MUTE = 0x40,
+ TP_NVRAM_MASK_HKT_VOLUME = 0x80,
+ TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
+ TP_NVRAM_POS_LEVEL_VOLUME = 0,
+};
+
+/* Misc NVRAM-related */
+enum {
+ TP_NVRAM_LEVEL_VOLUME_MAX = 14,
+};
+
+/* ACPI HIDs */
+#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
+#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
+#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
+#define TPACPI_ACPI_EC_HID "PNP0C09"
+
+/* Input IDs */
+#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
+#define TPACPI_HKEY_INPUT_VERSION 0x4101
+
+/* ACPI \WGSV commands */
+enum {
+ TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
+ TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
+ TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
+ TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
+};
+
+/* TP_ACPI_WGSV_GET_STATE bits */
+enum {
+ TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
+ TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
+ TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
+ TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
+ TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
+ TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
+ TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
+ TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
+ TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
+ TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
+};
+
+/* HKEY events */
+enum tpacpi_hkey_event_t {
+ /* Original hotkeys */
+ TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */
+ TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
+ TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
+ TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
+ TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
+ TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
+ TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
+ TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */
+
+ /* Adaptive keyboard (2014 X1 Carbon) */
+ TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */
+ TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */
+ TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */
+ TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */
+
+ /* Extended hotkey events in 2017+ models */
+ TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */
+ TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */
+ TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using
+ * hkey -> scancode translation for
+ * compat. Later codes are entered
+ * directly in the sparse-keymap.
+ */
+ TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */
+ TP_HKEY_EV_CAMERASHUTTER_TOGGLE = 0x131b, /* Toggle Camera Shutter */
+ TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */
+ TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */
+ TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */
+
+ /* Reasons for waking up from S3/S4 */
+ TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
+ TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
+ TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
+ TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
+ TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
+ TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
+
+ /* Auto-sleep after eject request */
+ TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
+ TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
+
+ /* Misc bay events */
+ TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
+ TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
+ or port replicator */
+ TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
+ dock or port replicator */
+ /*
+ * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013
+ * when keyboard cover is attached, detached or folded onto the back
+ */
+ TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */
+ TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */
+
+ /* User-interface events */
+ TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
+ TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
+ TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
+ TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
+ TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
+ * enter/leave tablet mode
+ */
+ TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
+ TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
+ TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
+
+ /* Key-related user-interface events */
+ TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
+ TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
+ TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
+
+ /* Thermal events */
+ TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
+ TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
+ TP_HKEY_EV_ALARM_BAT_LIM_CHANGE = 0x6013, /* battery charge limit changed*/
+ TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
+ TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
+ TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */
+ TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set
+ * command completed. Related to
+ * AML DYTC */
+ TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation
+ * changed. Related to AML GMTS */
+
+ /* AC-related events */
+ TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
+
+ /* Further user-interface events */
+ TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
+ TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
+
+ /* Misc */
+ TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
+
+ /* Misc2 */
+ TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */
+};
+
+/****************************************************************************
+ * Main driver
+ */
+
+#define TPACPI_NAME "thinkpad"
+#define TPACPI_DESC "ThinkPad ACPI Extras"
+#define TPACPI_FILE TPACPI_NAME "_acpi"
+#define TPACPI_URL "http://ibm-acpi.sf.net/"
+#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
+
+#define TPACPI_PROC_DIR "ibm"
+#define TPACPI_ACPI_EVENT_PREFIX "ibm"
+#define TPACPI_DRVR_NAME TPACPI_FILE
+#define TPACPI_DRVR_SHORTNAME "tpacpi"
+#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
+
+#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
+#define TPACPI_WORKQUEUE_NAME "ktpacpid"
+
+#define TPACPI_MAX_ACPI_ARGS 3
+
+/* Debugging printk groups */
+#define TPACPI_DBG_ALL 0xffff
+#define TPACPI_DBG_DISCLOSETASK 0x8000
+#define TPACPI_DBG_INIT 0x0001
+#define TPACPI_DBG_EXIT 0x0002
+#define TPACPI_DBG_RFKILL 0x0004
+#define TPACPI_DBG_HKEY 0x0008
+#define TPACPI_DBG_FAN 0x0010
+#define TPACPI_DBG_BRGHT 0x0020
+#define TPACPI_DBG_MIXER 0x0040
+
+#define FAN_NOT_PRESENT 65535
+
+/****************************************************************************
+ * Driver-wide structs and misc. variables
+ */
+
+struct ibm_struct;
+
+struct tp_acpi_drv_struct {
+ const struct acpi_device_id *hid;
+ struct acpi_driver *driver;
+
+ void (*notify) (struct ibm_struct *, u32);
+ acpi_handle *handle;
+ u32 type;
+ struct acpi_device *device;
+};
+
+struct ibm_struct {
+ char *name;
+
+ int (*read) (struct seq_file *);
+ int (*write) (char *);
+ void (*exit) (void);
+ void (*resume) (void);
+ void (*suspend) (void);
+ void (*shutdown) (void);
+
+ struct list_head all_drivers;
+
+ struct tp_acpi_drv_struct *acpi;
+
+ struct {
+ u8 acpi_driver_registered:1;
+ u8 acpi_notify_installed:1;
+ u8 proc_created:1;
+ u8 init_called:1;
+ u8 experimental:1;
+ } flags;
+};
+
+struct ibm_init_struct {
+ char param[32];
+
+ int (*init) (struct ibm_init_struct *);
+ umode_t base_procfs_mode;
+ struct ibm_struct *data;
+};
+
+/* DMI Quirks */
+struct quirk_entry {
+ bool btusb_bug;
+};
+
+static struct quirk_entry quirk_btusb_bug = {
+ .btusb_bug = true,
+};
+
+static struct {
+ u32 bluetooth:1;
+ u32 hotkey:1;
+ u32 hotkey_mask:1;
+ u32 hotkey_wlsw:1;
+ enum {
+ TP_HOTKEY_TABLET_NONE = 0,
+ TP_HOTKEY_TABLET_USES_MHKG,
+ TP_HOTKEY_TABLET_USES_GMMS,
+ } hotkey_tablet;
+ u32 kbdlight:1;
+ u32 light:1;
+ u32 light_status:1;
+ u32 bright_acpimode:1;
+ u32 bright_unkfw:1;
+ u32 wan:1;
+ u32 uwb:1;
+ u32 fan_ctrl_status_undef:1;
+ u32 second_fan:1;
+ u32 second_fan_ctl:1;
+ u32 beep_needs_two_args:1;
+ u32 mixer_no_level_control:1;
+ u32 battery_force_primary:1;
+ u32 platform_drv_registered:1;
+ u32 hotkey_poll_active:1;
+ u32 has_adaptive_kbd:1;
+ u32 kbd_lang:1;
+ u32 trackpoint_doubletap:1;
+ struct quirk_entry *quirks;
+} tp_features;
+
+static struct {
+ u16 hotkey_mask_ff:1;
+ u16 volume_ctrl_forbidden:1;
+} tp_warned;
+
+struct thinkpad_id_data {
+ unsigned int vendor; /* ThinkPad vendor:
+ * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
+
+ char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
+ char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
+
+ u32 bios_model; /* 1Y = 0x3159, 0 = unknown */
+ u32 ec_model;
+ u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */
+ u16 ec_release;
+
+ char *model_str; /* ThinkPad T43 */
+ char *nummodel_str; /* 9384A9C for a 9384-A9C model */
+};
+static struct thinkpad_id_data thinkpad_id;
+
+static enum {
+ TPACPI_LIFE_INIT = 0,
+ TPACPI_LIFE_RUNNING,
+ TPACPI_LIFE_EXITING,
+} tpacpi_lifecycle;
+
+static int experimental;
+static u32 dbg_level;
+
+static struct workqueue_struct *tpacpi_wq;
+
+enum led_status_t {
+ TPACPI_LED_OFF = 0,
+ TPACPI_LED_ON,
+ TPACPI_LED_BLINK,
+};
+
+/* tpacpi LED class */
+struct tpacpi_led_classdev {
+ struct led_classdev led_classdev;
+ int led;
+};
+
+/* brightness level capabilities */
+static unsigned int bright_maxlvl; /* 0 = unknown */
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+static int dbg_wlswemul;
+static bool tpacpi_wlsw_emulstate;
+static int dbg_bluetoothemul;
+static bool tpacpi_bluetooth_emulstate;
+static int dbg_wwanemul;
+static bool tpacpi_wwan_emulstate;
+static int dbg_uwbemul;
+static bool tpacpi_uwb_emulstate;
+#endif
+
+
+/*************************************************************************
+ * Debugging helpers
+ */
+
+#define dbg_printk(a_dbg_level, format, arg...) \
+do { \
+ if (dbg_level & (a_dbg_level)) \
+ printk(KERN_DEBUG pr_fmt("%s: " format), \
+ __func__, ##arg); \
+} while (0)
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUG
+#define vdbg_printk dbg_printk
+static const char *str_supported(int is_supported);
+#else
+static inline const char *str_supported(int is_supported) { return ""; }
+#define vdbg_printk(a_dbg_level, format, arg...) \
+ do { if (0) no_printk(format, ##arg); } while (0)
+#endif
+
+static void tpacpi_log_usertask(const char * const what)
+{
+ printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
+ what, task_tgid_vnr(current));
+}
+
+#define tpacpi_disclose_usertask(what, format, arg...) \
+do { \
+ if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
+ (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
+ printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
+ what, task_tgid_vnr(current), ## arg); \
+ } \
+} while (0)
+
+/*
+ * Quirk handling helpers
+ *
+ * ThinkPad IDs and versions seen in the field so far are
+ * two or three characters from the set [0-9A-Z], i.e. base 36.
+ *
+ * We use values well outside that range as specials.
+ */
+
+#define TPACPI_MATCH_ANY 0xffffffffU
+#define TPACPI_MATCH_ANY_VERSION 0xffffU
+#define TPACPI_MATCH_UNKNOWN 0U
+
+/* TPID('1', 'Y') == 0x3159 */
+#define TPID(__c1, __c2) (((__c1) << 8) | (__c2))
+#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))
+#define TPVER TPID
+
+#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_IBM, \
+ .bios = TPID(__id1, __id2), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = (__quirk) }
+
+#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_LENOVO, \
+ .bios = TPID(__id1, __id2), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = (__quirk) }
+
+#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \
+ { .vendor = PCI_VENDOR_ID_LENOVO, \
+ .bios = TPID3(__id1, __id2, __id3), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = (__quirk) }
+
+#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_IBM, \
+ .bios = TPACPI_MATCH_ANY, \
+ .ec = TPID(__id1, __id2), \
+ .quirks = (__quirk) }
+
+#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
+ { .vendor = PCI_VENDOR_ID_LENOVO, \
+ .bios = TPACPI_MATCH_ANY, \
+ .ec = TPID(__id1, __id2), \
+ .quirks = (__quirk) }
+
+struct tpacpi_quirk {
+ unsigned int vendor;
+ u32 bios;
+ u32 ec;
+ unsigned long quirks;
+};
+
+/**
+ * tpacpi_check_quirks() - search BIOS/EC version on a list
+ * @qlist: array of &struct tpacpi_quirk
+ * @qlist_size: number of elements in @qlist
+ *
+ * Iterates over a quirks list until one is found that matches the
+ * ThinkPad's vendor, BIOS and EC model.
+ *
+ * Returns: %0 if nothing matches, otherwise returns the quirks field of
+ * the matching &struct tpacpi_quirk entry.
+ *
+ * The match criteria is: vendor, ec and bios must match.
+ */
+static unsigned long __init tpacpi_check_quirks(
+ const struct tpacpi_quirk *qlist,
+ unsigned int qlist_size)
+{
+ while (qlist_size) {
+ if ((qlist->vendor == thinkpad_id.vendor ||
+ qlist->vendor == TPACPI_MATCH_ANY) &&
+ (qlist->bios == thinkpad_id.bios_model ||
+ qlist->bios == TPACPI_MATCH_ANY) &&
+ (qlist->ec == thinkpad_id.ec_model ||
+ qlist->ec == TPACPI_MATCH_ANY))
+ return qlist->quirks;
+
+ qlist_size--;
+ qlist++;
+ }
+ return 0;
+}
+
+static inline bool __pure __init tpacpi_is_lenovo(void)
+{
+ return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
+}
+
+static inline bool __pure __init tpacpi_is_ibm(void)
+{
+ return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
+}
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * ACPI Helpers and device model
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+/*************************************************************************
+ * ACPI basic handles
+ */
+
+static acpi_handle root_handle;
+static acpi_handle ec_handle;
+
+#define TPACPI_HANDLE(object, parent, paths...) \
+ static acpi_handle object##_handle; \
+ static const acpi_handle * const object##_parent __initconst = \
+ &parent##_handle; \
+ static char *object##_paths[] __initdata = { paths }
+
+TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
+TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
+
+TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
+ /* T4x, X31, X40 */
+ "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
+ "\\CMS", /* R40, R40e */
+ ); /* all others */
+
+TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
+ "^HKEY", /* R30, R31 */
+ "HKEY", /* all others */
+ ); /* 570 */
+
+/*************************************************************************
+ * ACPI helpers
+ */
+
+static int acpi_evalf(acpi_handle handle,
+ int *res, char *method, char *fmt, ...)
+{
+ char *fmt0 = fmt;
+ struct acpi_object_list params;
+ union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
+ struct acpi_buffer result, *resultp;
+ union acpi_object out_obj;
+ acpi_status status;
+ va_list ap;
+ char res_type;
+ int success;
+ int quiet;
+
+ if (!*fmt) {
+ pr_err("acpi_evalf() called with empty format\n");
+ return 0;
+ }
+
+ if (*fmt == 'q') {
+ quiet = 1;
+ fmt++;
+ } else
+ quiet = 0;
+
+ res_type = *(fmt++);
+
+ params.count = 0;
+ params.pointer = &in_objs[0];
+
+ va_start(ap, fmt);
+ while (*fmt) {
+ char c = *(fmt++);
+ switch (c) {
+ case 'd': /* int */
+ in_objs[params.count].integer.value = va_arg(ap, int);
+ in_objs[params.count++].type = ACPI_TYPE_INTEGER;
+ break;
+ /* add more types as needed */
+ default:
+ pr_err("acpi_evalf() called with invalid format character '%c'\n",
+ c);
+ va_end(ap);
+ return 0;
+ }
+ }
+ va_end(ap);
+
+ if (res_type != 'v') {
+ result.length = sizeof(out_obj);
+ result.pointer = &out_obj;
+ resultp = &result;
+ } else
+ resultp = NULL;
+
+ status = acpi_evaluate_object(handle, method, ¶ms, resultp);
+
+ switch (res_type) {
+ case 'd': /* int */
+ success = (status == AE_OK &&
+ out_obj.type == ACPI_TYPE_INTEGER);
+ if (success && res)
+ *res = out_obj.integer.value;
+ break;
+ case 'v': /* void */
+ success = status == AE_OK;
+ break;
+ /* add more types as needed */
+ default:
+ pr_err("acpi_evalf() called with invalid format character '%c'\n",
+ res_type);
+ return 0;
+ }
+
+ if (!success && !quiet)
+ pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
+ method, fmt0, acpi_format_exception(status));
+
+ return success;
+}
+
+static int acpi_ec_read(int i, u8 *p)
+{
+ int v;
+
+ if (ecrd_handle) {
+ if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
+ return 0;
+ *p = v;
+ } else {
+ if (ec_read(i, p) < 0)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int acpi_ec_write(int i, u8 v)
+{
+ if (ecwr_handle) {
+ if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
+ return 0;
+ } else {
+ if (ec_write(i, v) < 0)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int issue_thinkpad_cmos_command(int cmos_cmd)
+{
+ if (!cmos_handle)
+ return -ENXIO;
+
+ if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
+ return -EIO;
+
+ return 0;
+}
+
+/*************************************************************************
+ * ACPI device model
+ */
+
+#define TPACPI_ACPIHANDLE_INIT(object) \
+ drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
+ object##_paths, ARRAY_SIZE(object##_paths))
+
+static void __init drv_acpi_handle_init(const char *name,
+ acpi_handle *handle, const acpi_handle parent,
+ char **paths, const int num_paths)
+{
+ int i;
+ acpi_status status;
+
+ vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
+ name);
+
+ for (i = 0; i < num_paths; i++) {
+ status = acpi_get_handle(parent, paths[i], handle);
+ if (ACPI_SUCCESS(status)) {
+ dbg_printk(TPACPI_DBG_INIT,
+ "Found ACPI handle %s for %s\n",
+ paths[i], name);
+ return;
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
+ name);
+ *handle = NULL;
+}
+
+static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
+ u32 level, void *context, void **return_value)
+{
+ if (!strcmp(context, "video")) {
+ struct acpi_device *dev = acpi_fetch_acpi_dev(handle);
+
+ if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
+ return AE_OK;
+ }
+
+ *(acpi_handle *)return_value = handle;
+
+ return AE_CTRL_TERMINATE;
+}
+
+static void __init tpacpi_acpi_handle_locate(const char *name,
+ const char *hid,
+ acpi_handle *handle)
+{
+ acpi_status status;
+ acpi_handle device_found;
+
+ BUG_ON(!name || !handle);
+ vdbg_printk(TPACPI_DBG_INIT,
+ "trying to locate ACPI handle for %s, using HID %s\n",
+ name, hid ? hid : "NULL");
+
+ memset(&device_found, 0, sizeof(device_found));
+ status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
+ (void *)name, &device_found);
+
+ *handle = NULL;
+
+ if (ACPI_SUCCESS(status)) {
+ *handle = device_found;
+ dbg_printk(TPACPI_DBG_INIT,
+ "Found ACPI handle for %s\n", name);
+ } else {
+ vdbg_printk(TPACPI_DBG_INIT,
+ "Could not locate an ACPI handle for %s: %s\n",
+ name, acpi_format_exception(status));
+ }
+}
+
+static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct ibm_struct *ibm = data;
+
+ if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
+ return;
+
+ if (!ibm || !ibm->acpi || !ibm->acpi->notify)
+ return;
+
+ ibm->acpi->notify(ibm, event);
+}
+
+static int __init setup_acpi_notify(struct ibm_struct *ibm)
+{
+ acpi_status status;
+
+ BUG_ON(!ibm->acpi);
+
+ if (!*ibm->acpi->handle)
+ return 0;
+
+ vdbg_printk(TPACPI_DBG_INIT,
+ "setting up ACPI notify for %s\n", ibm->name);
+
+ ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle);
+ if (!ibm->acpi->device) {
+ pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name);
+ return -ENODEV;
+ }
+
+ ibm->acpi->device->driver_data = ibm;
+ scnprintf(acpi_device_class(ibm->acpi->device),
+ sizeof(acpi_device_class(ibm->acpi->device)),
+ "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name);
+
+ status = acpi_install_notify_handler(*ibm->acpi->handle,
+ ibm->acpi->type, dispatch_acpi_notify, ibm);
+ if (ACPI_FAILURE(status)) {
+ if (status == AE_ALREADY_EXISTS) {
+ pr_notice("another device driver is already handling %s events\n",
+ ibm->name);
+ } else {
+ pr_err("acpi_install_notify_handler(%s) failed: %s\n",
+ ibm->name, acpi_format_exception(status));
+ }
+ return -ENODEV;
+ }
+ ibm->flags.acpi_notify_installed = 1;
+ return 0;
+}
+
+static int __init tpacpi_device_add(struct acpi_device *device)
+{
+ return 0;
+}
+
+static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
+{
+ int rc;
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "registering %s as an ACPI driver\n", ibm->name);
+
+ BUG_ON(!ibm->acpi);
+
+ ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
+ if (!ibm->acpi->driver) {
+ pr_err("failed to allocate memory for ibm->acpi->driver\n");
+ return -ENOMEM;
+ }
+
+ sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
+ ibm->acpi->driver->ids = ibm->acpi->hid;
+
+ ibm->acpi->driver->ops.add = &tpacpi_device_add;
+
+ rc = acpi_bus_register_driver(ibm->acpi->driver);
+ if (rc < 0) {
+ pr_err("acpi_bus_register_driver(%s) failed: %d\n",
+ ibm->name, rc);
+ kfree(ibm->acpi->driver);
+ ibm->acpi->driver = NULL;
+ } else if (!rc)
+ ibm->flags.acpi_driver_registered = 1;
+
+ return rc;
+}
+
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Procfs Helpers
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+static int dispatch_proc_show(struct seq_file *m, void *v)
+{
+ struct ibm_struct *ibm = m->private;
+
+ if (!ibm || !ibm->read)
+ return -EINVAL;
+ return ibm->read(m);
+}
+
+static int dispatch_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dispatch_proc_show, pde_data(inode));
+}
+
+static ssize_t dispatch_proc_write(struct file *file,
+ const char __user *userbuf,
+ size_t count, loff_t *pos)
+{
+ struct ibm_struct *ibm = pde_data(file_inode(file));
+ char *kernbuf;
+ int ret;
+
+ if (!ibm || !ibm->write)
+ return -EINVAL;
+ if (count > PAGE_SIZE - 1)
+ return -EINVAL;
+
+ kernbuf = memdup_user_nul(userbuf, count);
+ if (IS_ERR(kernbuf))
+ return PTR_ERR(kernbuf);
+ ret = ibm->write(kernbuf);
+ if (ret == 0)
+ ret = count;
+
+ kfree(kernbuf);
+
+ return ret;
+}
+
+static const struct proc_ops dispatch_proc_ops = {
+ .proc_open = dispatch_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+ .proc_write = dispatch_proc_write,
+};
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Device model: input, hwmon and platform
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+static struct platform_device *tpacpi_pdev;
+static struct platform_device *tpacpi_sensors_pdev;
+static struct device *tpacpi_hwmon;
+static struct device *tpacpi_pprof;
+static struct input_dev *tpacpi_inputdev;
+static struct mutex tpacpi_inputdev_send_mutex;
+static LIST_HEAD(tpacpi_all_drivers);
+
+#ifdef CONFIG_PM_SLEEP
+static int tpacpi_suspend_handler(struct device *dev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->suspend)
+ (ibm->suspend)();
+ }
+
+ return 0;
+}
+
+static int tpacpi_resume_handler(struct device *dev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->resume)
+ (ibm->resume)();
+ }
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(tpacpi_pm,
+ tpacpi_suspend_handler, tpacpi_resume_handler);
+
+static void tpacpi_shutdown_handler(struct platform_device *pdev)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe(ibm, itmp,
+ &tpacpi_all_drivers,
+ all_drivers) {
+ if (ibm->shutdown)
+ (ibm->shutdown)();
+ }
+}
+
+/*************************************************************************
+ * sysfs support helpers
+ */
+
+static int parse_strtoul(const char *buf,
+ unsigned long max, unsigned long *value)
+{
+ char *endp;
+
+ *value = simple_strtoul(skip_spaces(buf), &endp, 0);
+ endp = skip_spaces(endp);
+ if (*endp || *value > max)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void tpacpi_disable_brightness_delay(void)
+{
+ if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
+ pr_notice("ACPI backlight control delay disabled\n");
+}
+
+static void printk_deprecated_attribute(const char * const what,
+ const char * const details)
+{
+ tpacpi_log_usertask("deprecated sysfs attribute");
+ pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
+ what, details);
+}
+
+/*************************************************************************
+ * rfkill and radio control support helpers
+ */
+
+/*
+ * ThinkPad-ACPI firmware handling model:
+ *
+ * WLSW (master wireless switch) is event-driven, and is common to all
+ * firmware-controlled radios. It cannot be controlled, just monitored,
+ * as expected. It overrides all radio state in firmware
+ *
+ * The kernel, a masked-off hotkey, and WLSW can change the radio state
+ * (TODO: verify how WLSW interacts with the returned radio state).
+ *
+ * The only time there are shadow radio state changes, is when
+ * masked-off hotkeys are used.
+ */
+
+/*
+ * Internal driver API for radio state:
+ *
+ * int: < 0 = error, otherwise enum tpacpi_rfkill_state
+ * bool: true means radio blocked (off)
+ */
+enum tpacpi_rfkill_state {
+ TPACPI_RFK_RADIO_OFF = 0,
+ TPACPI_RFK_RADIO_ON
+};
+
+/* rfkill switches */
+enum tpacpi_rfk_id {
+ TPACPI_RFK_BLUETOOTH_SW_ID = 0,
+ TPACPI_RFK_WWAN_SW_ID,
+ TPACPI_RFK_UWB_SW_ID,
+ TPACPI_RFK_SW_MAX
+};
+
+static const char *tpacpi_rfkill_names[] = {
+ [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
+ [TPACPI_RFK_WWAN_SW_ID] = "wwan",
+ [TPACPI_RFK_UWB_SW_ID] = "uwb",
+ [TPACPI_RFK_SW_MAX] = NULL
+};
+
+/* ThinkPad-ACPI rfkill subdriver */
+struct tpacpi_rfk {
+ struct rfkill *rfkill;
+ enum tpacpi_rfk_id id;
+ const struct tpacpi_rfk_ops *ops;
+};
+
+struct tpacpi_rfk_ops {
+ /* firmware interface */
+ int (*get_status)(void);
+ int (*set_status)(const enum tpacpi_rfkill_state);
+};
+
+static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
+
+/* Query FW and update rfkill sw state for a given rfkill switch */
+static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
+{
+ int status;
+
+ if (!tp_rfk)
+ return -ENODEV;
+
+ status = (tp_rfk->ops->get_status)();
+ if (status < 0)
+ return status;
+
+ rfkill_set_sw_state(tp_rfk->rfkill,
+ (status == TPACPI_RFK_RADIO_OFF));
+
+ return status;
+}
+
+/*
+ * Sync the HW-blocking state of all rfkill switches,
+ * do notice it causes the rfkill core to schedule uevents
+ */
+static void tpacpi_rfk_update_hwblock_state(bool blocked)
+{
+ unsigned int i;
+ struct tpacpi_rfk *tp_rfk;
+
+ for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
+ tp_rfk = tpacpi_rfkill_switches[i];
+ if (tp_rfk) {
+ if (rfkill_set_hw_state(tp_rfk->rfkill,
+ blocked)) {
+ /* ignore -- we track sw block */
+ }
+ }
+ }
+}
+
+/* Call to get the WLSW state from the firmware */
+static int hotkey_get_wlsw(void);
+
+/* Call to query WLSW state and update all rfkill switches */
+static bool tpacpi_rfk_check_hwblock_state(void)
+{
+ int res = hotkey_get_wlsw();
+ int hw_blocked;
+
+ /* When unknown or unsupported, we have to assume it is unblocked */
+ if (res < 0)
+ return false;
+
+ hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
+ tpacpi_rfk_update_hwblock_state(hw_blocked);
+
+ return hw_blocked;
+}
+
+static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
+{
+ struct tpacpi_rfk *tp_rfk = data;
+ int res;
+
+ dbg_printk(TPACPI_DBG_RFKILL,
+ "request to change radio state to %s\n",
+ blocked ? "blocked" : "unblocked");
+
+ /* try to set radio state */
+ res = (tp_rfk->ops->set_status)(blocked ?
+ TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
+
+ /* and update the rfkill core with whatever the FW really did */
+ tpacpi_rfk_update_swstate(tp_rfk);
+
+ return (res < 0) ? res : 0;
+}
+
+static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
+ .set_block = tpacpi_rfk_hook_set_block,
+};
+
+static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
+ const struct tpacpi_rfk_ops *tp_rfkops,
+ const enum rfkill_type rfktype,
+ const char *name,
+ const bool set_default)
+{
+ struct tpacpi_rfk *atp_rfk;
+ int res;
+ bool sw_state = false;
+ bool hw_state;
+ int sw_status;
+
+ BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
+
+ atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
+ if (atp_rfk)
+ atp_rfk->rfkill = rfkill_alloc(name,
+ &tpacpi_pdev->dev,
+ rfktype,
+ &tpacpi_rfk_rfkill_ops,
+ atp_rfk);
+ if (!atp_rfk || !atp_rfk->rfkill) {
+ pr_err("failed to allocate memory for rfkill class\n");
+ kfree(atp_rfk);
+ return -ENOMEM;
+ }
+
+ atp_rfk->id = id;
+ atp_rfk->ops = tp_rfkops;
+
+ sw_status = (tp_rfkops->get_status)();
+ if (sw_status < 0) {
+ pr_err("failed to read initial state for %s, error %d\n",
+ name, sw_status);
+ } else {
+ sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
+ if (set_default) {
+ /* try to keep the initial state, since we ask the
+ * firmware to preserve it across S5 in NVRAM */
+ rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
+ }
+ }
+ hw_state = tpacpi_rfk_check_hwblock_state();
+ rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
+
+ res = rfkill_register(atp_rfk->rfkill);
+ if (res < 0) {
+ pr_err("failed to register %s rfkill switch: %d\n", name, res);
+ rfkill_destroy(atp_rfk->rfkill);
+ kfree(atp_rfk);
+ return res;
+ }
+
+ tpacpi_rfkill_switches[id] = atp_rfk;
+
+ pr_info("rfkill switch %s: radio is %sblocked\n",
+ name, (sw_state || hw_state) ? "" : "un");
+ return 0;
+}
+
+static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
+{
+ struct tpacpi_rfk *tp_rfk;
+
+ BUG_ON(id >= TPACPI_RFK_SW_MAX);
+
+ tp_rfk = tpacpi_rfkill_switches[id];
+ if (tp_rfk) {
+ rfkill_unregister(tp_rfk->rfkill);
+ rfkill_destroy(tp_rfk->rfkill);
+ tpacpi_rfkill_switches[id] = NULL;
+ kfree(tp_rfk);
+ }
+}
+
+static void printk_deprecated_rfkill_attribute(const char * const what)
+{
+ printk_deprecated_attribute(what,
+ "Please switch to generic rfkill before year 2010");
+}
+
+/* sysfs <radio> enable ------------------------------------------------ */
+static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int status;
+
+ printk_deprecated_rfkill_attribute(attr->attr.name);
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state()) {
+ status = TPACPI_RFK_RADIO_OFF;
+ } else {
+ status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+ if (status < 0)
+ return status;
+ }
+
+ return sysfs_emit(buf, "%d\n",
+ (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
+}
+
+static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ printk_deprecated_rfkill_attribute(attr->attr.name);
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state() && !!t)
+ return -EPERM;
+
+ res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+
+ return (res < 0) ? res : count;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
+{
+ if (id >= TPACPI_RFK_SW_MAX)
+ seq_printf(m, "status:\t\tnot supported\n");
+ else {
+ int status;
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state()) {
+ status = TPACPI_RFK_RADIO_OFF;
+ } else {
+ status = tpacpi_rfk_update_swstate(
+ tpacpi_rfkill_switches[id]);
+ if (status < 0)
+ return status;
+ }
+
+ seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON));
+ seq_printf(m, "commands:\tenable, disable\n");
+ }
+
+ return 0;
+}
+
+static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
+{
+ char *cmd;
+ int status = -1;
+ int res = 0;
+
+ if (id >= TPACPI_RFK_SW_MAX)
+ return -ENODEV;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (strstarts(cmd, "enable"))
+ status = TPACPI_RFK_RADIO_ON;
+ else if (strstarts(cmd, "disable"))
+ status = TPACPI_RFK_RADIO_OFF;
+ else
+ return -EINVAL;
+ }
+
+ if (status != -1) {
+ tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
+ str_enable_disable(status == TPACPI_RFK_RADIO_ON),
+ tpacpi_rfkill_names[id]);
+ res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+ }
+
+ return res;
+}
+
+/*************************************************************************
+ * thinkpad-acpi driver attributes
+ */
+
+/* interface_version --------------------------------------------------- */
+static ssize_t interface_version_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION);
+}
+static DRIVER_ATTR_RO(interface_version);
+
+/* debug_level --------------------------------------------------------- */
+static ssize_t debug_level_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "0x%04x\n", dbg_level);
+}
+
+static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 0xffff, &t))
+ return -EINVAL;
+
+ dbg_level = t;
+
+ return count;
+}
+static DRIVER_ATTR_RW(debug_level);
+
+/* version ------------------------------------------------------------- */
+static ssize_t version_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "%s v%s\n",
+ TPACPI_DESC, TPACPI_VERSION);
+}
+static DRIVER_ATTR_RO(version);
+
+/* --------------------------------------------------------------------- */
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+
+/* wlsw_emulstate ------------------------------------------------------ */
+static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate);
+}
+
+static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ if (tpacpi_wlsw_emulstate != !!t) {
+ tpacpi_wlsw_emulstate = !!t;
+ tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
+ }
+
+ return count;
+}
+static DRIVER_ATTR_RW(wlsw_emulstate);
+
+/* bluetooth_emulstate ------------------------------------------------- */
+static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate);
+}
+
+static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_bluetooth_emulstate = !!t;
+
+ return count;
+}
+static DRIVER_ATTR_RW(bluetooth_emulstate);
+
+/* wwan_emulstate ------------------------------------------------- */
+static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate);
+}
+
+static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_wwan_emulstate = !!t;
+
+ return count;
+}
+static DRIVER_ATTR_RW(wwan_emulstate);
+
+/* uwb_emulstate ------------------------------------------------- */
+static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate);
+}
+
+static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_uwb_emulstate = !!t;
+
+ return count;
+}
+static DRIVER_ATTR_RW(uwb_emulstate);
+#endif
+
+/*************************************************************************
+ * Firmware Data
+ */
+
+/*
+ * Table of recommended minimum BIOS versions
+ *
+ * Reasons for listing:
+ * 1. Stable BIOS, listed because the unknown amount of
+ * bugs and bad ACPI behaviour on older versions
+ *
+ * 2. BIOS or EC fw with known bugs that trigger on Linux
+ *
+ * 3. BIOS with known reduced functionality in older versions
+ *
+ * We recommend the latest BIOS and EC version.
+ * We only support the latest BIOS and EC fw version as a rule.
+ *
+ * Sources: IBM ThinkPad Public Web Documents (update changelogs),
+ * Information from users in ThinkWiki
+ *
+ * WARNING: we use this table also to detect that the machine is
+ * a ThinkPad in some cases, so don't remove entries lightly.
+ */
+
+#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
+ { .vendor = (__v), \
+ .bios = TPID(__id1, __id2), \
+ .ec = TPACPI_MATCH_ANY, \
+ .quirks = TPACPI_MATCH_ANY_VERSION << 16 \
+ | TPVER(__bv1, __bv2) }
+
+#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
+ __eid, __ev1, __ev2) \
+ { .vendor = (__v), \
+ .bios = TPID(__bid1, __bid2), \
+ .ec = __eid, \
+ .quirks = TPVER(__ev1, __ev2) << 16 \
+ | TPVER(__bv1, __bv2) }
+
+#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
+ TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
+
+/* Outdated IBM BIOSes often lack the EC id string */
+#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
+ __bv1, __bv2, TPID(__id1, __id2), \
+ __ev1, __ev2), \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
+ __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
+ __ev1, __ev2)
+
+/* Outdated IBM BIOSes often lack the EC id string */
+#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
+ __eid1, __eid2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
+ __bv1, __bv2, TPID(__eid1, __eid2), \
+ __ev1, __ev2), \
+ TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
+ __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
+ __ev1, __ev2)
+
+#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
+ TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
+
+#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
+ __bv1, __bv2, TPID(__id1, __id2), \
+ __ev1, __ev2)
+
+#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
+ __eid1, __eid2, __ev1, __ev2) \
+ TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
+ __bv1, __bv2, TPID(__eid1, __eid2), \
+ __ev1, __ev2)
+
+static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
+ /* Numeric models ------------------ */
+ /* FW MODEL BIOS VERS */
+ TPV_QI0('I', 'M', '6', '5'), /* 570 */
+ TPV_QI0('I', 'U', '2', '6'), /* 570E */
+ TPV_QI0('I', 'B', '5', '4'), /* 600 */
+ TPV_QI0('I', 'H', '4', '7'), /* 600E */
+ TPV_QI0('I', 'N', '3', '6'), /* 600E */
+ TPV_QI0('I', 'T', '5', '5'), /* 600X */
+ TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
+ TPV_QI0('I', 'I', '4', '2'), /* 770X */
+ TPV_QI0('I', 'O', '2', '3'), /* 770Z */
+
+ /* A-series ------------------------- */
+ /* FW MODEL BIOS VERS EC VERS */
+ TPV_QI0('I', 'W', '5', '9'), /* A20m */
+ TPV_QI0('I', 'V', '6', '9'), /* A20p */
+ TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
+ TPV_QI0('K', 'U', '3', '6'), /* A21e */
+ TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
+ TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
+ TPV_QI0('1', 'B', '1', '7'), /* A22e */
+ TPV_QI0('1', '3', '2', '0'), /* A22m */
+ TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
+ TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
+ TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
+
+ /* G-series ------------------------- */
+ /* FW MODEL BIOS VERS */
+ TPV_QI0('1', 'T', 'A', '6'), /* G40 */
+ TPV_QI0('1', 'X', '5', '7'), /* G41 */
+
+ /* R-series, T-series --------------- */
+ /* FW MODEL BIOS VERS EC VERS */
+ TPV_QI0('1', 'C', 'F', '0'), /* R30 */
+ TPV_QI0('1', 'F', 'F', '1'), /* R31 */
+ TPV_QI0('1', 'M', '9', '7'), /* R32 */
+ TPV_QI0('1', 'O', '6', '1'), /* R40 */
+ TPV_QI0('1', 'P', '6', '5'), /* R40 */
+ TPV_QI0('1', 'S', '7', '0'), /* R40e */
+ TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
+ T40/p, T41/p, T42/p (1) */
+ TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
+ TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
+ TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
+ TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
+
+ TPV_QI0('I', 'Y', '6', '1'), /* T20 */
+ TPV_QI0('K', 'Z', '3', '4'), /* T21 */
+ TPV_QI0('1', '6', '3', '2'), /* T22 */
+ TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
+ TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
+ TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
+
+ TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
+ TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
+ TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
+
+ /* BIOS FW BIOS VERS EC FW EC VERS */
+ TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
+ TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
+
+ /* X-series ------------------------- */
+ /* FW MODEL BIOS VERS EC VERS */
+ TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
+ TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
+ TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
+ TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
+ TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
+ TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
+ TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
+
+ TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
+ TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
+
+ /* (0) - older versions lack DMI EC fw string and functionality */
+ /* (1) - older versions known to lack functionality */
+};
+
+#undef TPV_QL1
+#undef TPV_QL0
+#undef TPV_QI2
+#undef TPV_QI1
+#undef TPV_QI0
+#undef TPV_Q_X
+#undef TPV_Q
+
+static void __init tpacpi_check_outdated_fw(void)
+{
+ unsigned long fwvers;
+ u16 ec_version, bios_version;
+
+ fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
+ ARRAY_SIZE(tpacpi_bios_version_qtable));
+
+ if (!fwvers)
+ return;
+
+ bios_version = fwvers & 0xffffU;
+ ec_version = (fwvers >> 16) & 0xffffU;
+
+ /* note that unknown versions are set to 0x0000 and we use that */
+ if ((bios_version > thinkpad_id.bios_release) ||
+ (ec_version > thinkpad_id.ec_release &&
+ ec_version != TPACPI_MATCH_ANY_VERSION)) {
+ /*
+ * The changelogs would let us track down the exact
+ * reason, but it is just too much of a pain to track
+ * it. We only list BIOSes that are either really
+ * broken, or really stable to begin with, so it is
+ * best if the user upgrades the firmware anyway.
+ */
+ pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
+ pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
+ }
+}
+
+static bool __init tpacpi_is_fw_known(void)
+{
+ return tpacpi_check_quirks(tpacpi_bios_version_qtable,
+ ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
+}
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Subdrivers
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+/*************************************************************************
+ * thinkpad-acpi metadata subdriver
+ */
+
+static int thinkpad_acpi_driver_read(struct seq_file *m)
+{
+ seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
+ seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
+ return 0;
+}
+
+static struct ibm_struct thinkpad_acpi_driver_data = {
+ .name = "driver",
+ .read = thinkpad_acpi_driver_read,
+};
+
+/*************************************************************************
+ * Hotkey subdriver
+ */
+
+/*
+ * ThinkPad firmware event model
+ *
+ * The ThinkPad firmware has two main event interfaces: normal ACPI
+ * notifications (which follow the ACPI standard), and a private event
+ * interface.
+ *
+ * The private event interface also issues events for the hotkeys. As
+ * the driver gained features, the event handling code ended up being
+ * built around the hotkey subdriver. This will need to be refactored
+ * to a more formal event API eventually.
+ *
+ * Some "hotkeys" are actually supposed to be used as event reports,
+ * such as "brightness has changed", "volume has changed", depending on
+ * the ThinkPad model and how the firmware is operating.
+ *
+ * Unlike other classes, hotkey-class events have mask/unmask control on
+ * non-ancient firmware. However, how it behaves changes a lot with the
+ * firmware model and version.
+ */
+
+enum { /* hot key scan codes (derived from ACPI DSDT) */
+ TP_ACPI_HOTKEYSCAN_FNF1 = 0,
+ TP_ACPI_HOTKEYSCAN_FNF2,
+ TP_ACPI_HOTKEYSCAN_FNF3,
+ TP_ACPI_HOTKEYSCAN_FNF4,
+ TP_ACPI_HOTKEYSCAN_FNF5,
+ TP_ACPI_HOTKEYSCAN_FNF6,
+ TP_ACPI_HOTKEYSCAN_FNF7,
+ TP_ACPI_HOTKEYSCAN_FNF8,
+ TP_ACPI_HOTKEYSCAN_FNF9,
+ TP_ACPI_HOTKEYSCAN_FNF10,
+ TP_ACPI_HOTKEYSCAN_FNF11,
+ TP_ACPI_HOTKEYSCAN_FNF12,
+ TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
+ TP_ACPI_HOTKEYSCAN_FNINSERT,
+ TP_ACPI_HOTKEYSCAN_FNDELETE,
+ TP_ACPI_HOTKEYSCAN_FNHOME,
+ TP_ACPI_HOTKEYSCAN_FNEND,
+ TP_ACPI_HOTKEYSCAN_FNPAGEUP,
+ TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
+ TP_ACPI_HOTKEYSCAN_FNSPACE,
+ TP_ACPI_HOTKEYSCAN_VOLUMEUP,
+ TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
+ TP_ACPI_HOTKEYSCAN_MUTE,
+ TP_ACPI_HOTKEYSCAN_THINKPAD,
+ TP_ACPI_HOTKEYSCAN_UNK1,
+ TP_ACPI_HOTKEYSCAN_UNK2,
+ TP_ACPI_HOTKEYSCAN_MICMUTE,
+ TP_ACPI_HOTKEYSCAN_UNK4,
+ TP_ACPI_HOTKEYSCAN_CONFIG,
+ TP_ACPI_HOTKEYSCAN_SEARCH,
+ TP_ACPI_HOTKEYSCAN_SCALE,
+ TP_ACPI_HOTKEYSCAN_FILE,
+
+ /* Adaptive keyboard keycodes */
+ TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */
+ TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
+ TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
+ TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
+ TP_ACPI_HOTKEYSCAN_CLOUD,
+ TP_ACPI_HOTKEYSCAN_UNK9,
+ TP_ACPI_HOTKEYSCAN_VOICE,
+ TP_ACPI_HOTKEYSCAN_UNK10,
+ TP_ACPI_HOTKEYSCAN_GESTURES,
+ TP_ACPI_HOTKEYSCAN_UNK11,
+ TP_ACPI_HOTKEYSCAN_UNK12,
+ TP_ACPI_HOTKEYSCAN_UNK13,
+ TP_ACPI_HOTKEYSCAN_CONFIG2,
+ TP_ACPI_HOTKEYSCAN_NEW_TAB,
+ TP_ACPI_HOTKEYSCAN_RELOAD,
+ TP_ACPI_HOTKEYSCAN_BACK,
+ TP_ACPI_HOTKEYSCAN_MIC_DOWN,
+ TP_ACPI_HOTKEYSCAN_MIC_UP,
+ TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
+ TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
+ TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
+
+ /* Lenovo extended keymap, starting at 0x1300 */
+ TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */
+ /* first new observed key (star, favorites) is 0x1311 */
+ TP_ACPI_HOTKEYSCAN_STAR = 69,
+ TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
+ TP_ACPI_HOTKEYSCAN_CALCULATOR,
+ TP_ACPI_HOTKEYSCAN_BLUETOOTH,
+ TP_ACPI_HOTKEYSCAN_KEYBOARD,
+ TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */
+ TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
+ TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
+ TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
+};
+
+enum { /* Keys/events available through NVRAM polling */
+ TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
+ TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
+};
+
+enum { /* Positions of some of the keys in hotkey masks */
+ TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
+ TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
+ TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
+ TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
+ TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
+ TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
+ TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
+ TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
+ TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
+ TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
+ TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
+};
+
+enum { /* NVRAM to ACPI HKEY group map */
+ TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
+ TP_ACPI_HKEY_ZOOM_MASK |
+ TP_ACPI_HKEY_DISPSWTCH_MASK |
+ TP_ACPI_HKEY_HIBERNATE_MASK,
+ TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
+ TP_ACPI_HKEY_BRGHTDWN_MASK,
+ TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
+ TP_ACPI_HKEY_VOLDWN_MASK |
+ TP_ACPI_HKEY_MUTE_MASK,
+};
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+struct tp_nvram_state {
+ u16 thinkpad_toggle:1;
+ u16 zoom_toggle:1;
+ u16 display_toggle:1;
+ u16 thinklight_toggle:1;
+ u16 hibernate_toggle:1;
+ u16 displayexp_toggle:1;
+ u16 display_state:1;
+ u16 brightness_toggle:1;
+ u16 volume_toggle:1;
+ u16 mute:1;
+
+ u8 brightness_level;
+ u8 volume_level;
+};
+
+/* kthread for the hotkey poller */
+static struct task_struct *tpacpi_hotkey_task;
+
+/*
+ * Acquire mutex to write poller control variables as an
+ * atomic block.
+ *
+ * Increment hotkey_config_change when changing them if you
+ * want the kthread to forget old state.
+ *
+ * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
+ */
+static struct mutex hotkey_thread_data_mutex;
+static unsigned int hotkey_config_change;
+
+/*
+ * hotkey poller control variables
+ *
+ * Must be atomic or readers will also need to acquire mutex
+ *
+ * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
+ * should be used only when the changes need to be taken as
+ * a block, OR when one needs to force the kthread to forget
+ * old state.
+ */
+static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
+static unsigned int hotkey_poll_freq = 10; /* Hz */
+
+#define HOTKEY_CONFIG_CRITICAL_START \
+ do { \
+ mutex_lock(&hotkey_thread_data_mutex); \
+ hotkey_config_change++; \
+ } while (0);
+#define HOTKEY_CONFIG_CRITICAL_END \
+ mutex_unlock(&hotkey_thread_data_mutex);
+
+#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+#define hotkey_source_mask 0U
+#define HOTKEY_CONFIG_CRITICAL_START
+#define HOTKEY_CONFIG_CRITICAL_END
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static struct mutex hotkey_mutex;
+
+static enum { /* Reasons for waking up */
+ TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
+ TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
+ TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
+} hotkey_wakeup_reason;
+
+static int hotkey_autosleep_ack;
+
+static u32 hotkey_orig_mask; /* events the BIOS had enabled */
+static u32 hotkey_all_mask; /* all events supported in fw */
+static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
+static u32 hotkey_reserved_mask; /* events better left disabled */
+static u32 hotkey_driver_mask; /* events needed by the driver */
+static u32 hotkey_user_mask; /* events visible to userspace */
+static u32 hotkey_acpi_mask; /* events enabled in firmware */
+
+static bool tpacpi_driver_event(const unsigned int hkey_event);
+static void hotkey_poll_setup(const bool may_warn);
+
+/* HKEY.MHKG() return bits */
+#define TP_HOTKEY_TABLET_MASK (1 << 3)
+enum {
+ TP_ACPI_MULTI_MODE_INVALID = 0,
+ TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
+ TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
+ TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
+ TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
+ TP_ACPI_MULTI_MODE_STAND = 1 << 4,
+ TP_ACPI_MULTI_MODE_TENT = 1 << 5,
+ TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
+};
+
+enum {
+ /* The following modes are considered tablet mode for the purpose of
+ * reporting the status to userspace. i.e. in all these modes it makes
+ * sense to disable the laptop input devices such as touchpad and
+ * keyboard.
+ */
+ TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
+ TP_ACPI_MULTI_MODE_STAND |
+ TP_ACPI_MULTI_MODE_TENT |
+ TP_ACPI_MULTI_MODE_STAND_TENT,
+};
+
+static int hotkey_get_wlsw(void)
+{
+ int status;
+
+ if (!tp_features.hotkey_wlsw)
+ return -ENODEV;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wlswemul)
+ return (tpacpi_wlsw_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
+ return -EIO;
+
+ return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
+{
+ int type = (s >> 16) & 0xffff;
+ int value = s & 0xffff;
+ int mode = TP_ACPI_MULTI_MODE_INVALID;
+ int valid_modes = 0;
+
+ if (has_tablet_mode)
+ *has_tablet_mode = 0;
+
+ switch (type) {
+ case 1:
+ valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
+ TP_ACPI_MULTI_MODE_TABLET |
+ TP_ACPI_MULTI_MODE_STAND_TENT;
+ break;
+ case 2:
+ valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
+ TP_ACPI_MULTI_MODE_FLAT |
+ TP_ACPI_MULTI_MODE_TABLET |
+ TP_ACPI_MULTI_MODE_STAND |
+ TP_ACPI_MULTI_MODE_TENT;
+ break;
+ case 3:
+ valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
+ TP_ACPI_MULTI_MODE_FLAT;
+ break;
+ case 4:
+ case 5:
+ /* In mode 4, FLAT is not specified as a valid mode. However,
+ * it can be seen at least on the X1 Yoga 2nd Generation.
+ */
+ valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
+ TP_ACPI_MULTI_MODE_FLAT |
+ TP_ACPI_MULTI_MODE_TABLET |
+ TP_ACPI_MULTI_MODE_STAND |
+ TP_ACPI_MULTI_MODE_TENT;
+ break;
+ default:
+ pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
+ type, value, TPACPI_MAIL);
+ return 0;
+ }
+
+ if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
+ *has_tablet_mode = 1;
+
+ switch (value) {
+ case 1:
+ mode = TP_ACPI_MULTI_MODE_LAPTOP;
+ break;
+ case 2:
+ mode = TP_ACPI_MULTI_MODE_FLAT;
+ break;
+ case 3:
+ mode = TP_ACPI_MULTI_MODE_TABLET;
+ break;
+ case 4:
+ if (type == 1)
+ mode = TP_ACPI_MULTI_MODE_STAND_TENT;
+ else
+ mode = TP_ACPI_MULTI_MODE_STAND;
+ break;
+ case 5:
+ mode = TP_ACPI_MULTI_MODE_TENT;
+ break;
+ default:
+ if (type == 5 && value == 0xffff) {
+ pr_warn("Multi mode status is undetected, assuming laptop\n");
+ return 0;
+ }
+ }
+
+ if (!(mode & valid_modes)) {
+ pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
+ value, type, TPACPI_MAIL);
+ return 0;
+ }
+
+ return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
+}
+
+static int hotkey_get_tablet_mode(int *status)
+{
+ int s;
+
+ switch (tp_features.hotkey_tablet) {
+ case TP_HOTKEY_TABLET_USES_MHKG:
+ if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
+ return -EIO;
+
+ *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
+ break;
+ case TP_HOTKEY_TABLET_USES_GMMS:
+ if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
+ return -EIO;
+
+ *status = hotkey_gmms_get_tablet_mode(s, NULL);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+/*
+ * Reads current event mask from firmware, and updates
+ * hotkey_acpi_mask accordingly. Also resets any bits
+ * from hotkey_user_mask that are unavailable to be
+ * delivered (shadow requirement of the userspace ABI).
+ */
+static int hotkey_mask_get(void)
+{
+ lockdep_assert_held(&hotkey_mutex);
+
+ if (tp_features.hotkey_mask) {
+ u32 m = 0;
+
+ if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
+ return -EIO;
+
+ hotkey_acpi_mask = m;
+ } else {
+ /* no mask support doesn't mean no event support... */
+ hotkey_acpi_mask = hotkey_all_mask;
+ }
+
+ /* sync userspace-visible mask */
+ hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
+
+ return 0;
+}
+
+static void hotkey_mask_warn_incomplete_mask(void)
+{
+ /* log only what the user can fix... */
+ const u32 wantedmask = hotkey_driver_mask &
+ ~(hotkey_acpi_mask | hotkey_source_mask) &
+ (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
+
+ if (wantedmask)
+ pr_notice("required events 0x%08x not enabled!\n", wantedmask);
+}
+
+/*
+ * Set the firmware mask when supported
+ *
+ * Also calls hotkey_mask_get to update hotkey_acpi_mask.
+ *
+ * NOTE: does not set bits in hotkey_user_mask, but may reset them.
+ */
+static int hotkey_mask_set(u32 mask)
+{
+ int i;
+ int rc = 0;
+
+ const u32 fwmask = mask & ~hotkey_source_mask;
+
+ lockdep_assert_held(&hotkey_mutex);
+
+ if (tp_features.hotkey_mask) {
+ for (i = 0; i < 32; i++) {
+ if (!acpi_evalf(hkey_handle,
+ NULL, "MHKM", "vdd", i + 1,
+ !!(mask & (1 << i)))) {
+ rc = -EIO;
+ break;
+ }
+ }
+ }
+
+ /*
+ * We *must* make an inconditional call to hotkey_mask_get to
+ * refresh hotkey_acpi_mask and update hotkey_user_mask
+ *
+ * Take the opportunity to also log when we cannot _enable_
+ * a given event.
+ */
+ if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
+ pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
+ fwmask, hotkey_acpi_mask);
+ }
+
+ if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
+ hotkey_mask_warn_incomplete_mask();
+
+ return rc;
+}
+
+/*
+ * Sets hotkey_user_mask and tries to set the firmware mask
+ */
+static int hotkey_user_mask_set(const u32 mask)
+{
+ int rc;
+
+ lockdep_assert_held(&hotkey_mutex);
+
+ /* Give people a chance to notice they are doing something that
+ * is bound to go boom on their users sooner or later */
+ if (!tp_warned.hotkey_mask_ff &&
+ (mask == 0xffff || mask == 0xffffff ||
+ mask == 0xffffffff)) {
+ tp_warned.hotkey_mask_ff = 1;
+ pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
+ mask);
+ pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
+ }
+
+ /* Try to enable what the user asked for, plus whatever we need.
+ * this syncs everything but won't enable bits in hotkey_user_mask */
+ rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
+
+ /* Enable the available bits in hotkey_user_mask */
+ hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
+
+ return rc;
+}
+
+/*
+ * Sets the driver hotkey mask.
+ *
+ * Can be called even if the hotkey subdriver is inactive
+ */
+static int tpacpi_hotkey_driver_mask_set(const u32 mask)
+{
+ int rc;
+
+ /* Do the right thing if hotkey_init has not been called yet */
+ if (!tp_features.hotkey) {
+ hotkey_driver_mask = mask;
+ return 0;
+ }
+
+ mutex_lock(&hotkey_mutex);
+
+ HOTKEY_CONFIG_CRITICAL_START
+ hotkey_driver_mask = mask;
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ hotkey_source_mask |= (mask & ~hotkey_all_mask);
+#endif
+ HOTKEY_CONFIG_CRITICAL_END
+
+ rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
+ ~hotkey_source_mask);
+ hotkey_poll_setup(true);
+
+ mutex_unlock(&hotkey_mutex);
+
+ return rc;
+}
+
+static int hotkey_status_get(int *status)
+{
+ if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
+ return -EIO;
+
+ return 0;
+}
+
+static int hotkey_status_set(bool enable)
+{
+ if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
+ return -EIO;
+
+ return 0;
+}
+
+static void tpacpi_input_send_tabletsw(void)
+{
+ int state;
+
+ if (tp_features.hotkey_tablet &&
+ !hotkey_get_tablet_mode(&state)) {
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_report_switch(tpacpi_inputdev,
+ SW_TABLET_MODE, !!state);
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ }
+}
+
+#define GCES_NO_SHUTTER_DEVICE BIT(31)
+
+static int get_camera_shutter(void)
+{
+ acpi_handle gces_handle;
+ int output;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GCES", &gces_handle)))
+ return -ENODEV;
+
+ if (!acpi_evalf(gces_handle, &output, NULL, "dd", 0))
+ return -EIO;
+
+ if (output & GCES_NO_SHUTTER_DEVICE)
+ return -ENODEV;
+
+ return output;
+}
+
+static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev)
+{
+ bool known_ev;
+ u32 scancode;
+
+ if (tpacpi_driver_event(hkey))
+ return true;
+
+ /*
+ * Before the conversion to using the sparse-keymap helpers the driver used to
+ * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode
+ * indexed array could be used to map scancodes to keycodes:
+ *
+ * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events)
+ * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon)
+ * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models)
+ *
+ * The sparse-keymap tables still use these scancodes for these ranges to
+ * preserve userspace API compatibility (e.g. hwdb keymappings).
+ */
+ if (hkey >= TP_HKEY_EV_ORIG_KEY_START &&
+ hkey <= TP_HKEY_EV_ORIG_KEY_END) {
+ scancode = hkey - TP_HKEY_EV_ORIG_KEY_START;
+ if (!(hotkey_user_mask & (1 << scancode)))
+ return true; /* Not reported but still a known code */
+ } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START &&
+ hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) {
+ scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START +
+ TP_ACPI_HOTKEYSCAN_ADAPTIVE_START;
+ } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START &&
+ hkey <= TP_HKEY_EV_EXTENDED_KEY_END) {
+ scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START +
+ TP_ACPI_HOTKEYSCAN_EXTENDED_START;
+ } else {
+ /*
+ * Do not send ACPI netlink events for unknown hotkeys, to
+ * avoid userspace starting to rely on them. Instead these
+ * should be added to the keymap to send evdev events.
+ */
+ if (send_acpi_ev)
+ *send_acpi_ev = false;
+
+ scancode = hkey;
+ }
+
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+ known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true);
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+
+ return known_ev;
+}
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
+
+/* Do NOT call without validating scancode first */
+static void tpacpi_hotkey_send_key(unsigned int scancode)
+{
+ tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL);
+}
+
+static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
+{
+ u8 d;
+
+ if (m & TP_NVRAM_HKEY_GROUP_HK2) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
+ n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
+ n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
+ n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
+ n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
+ }
+ if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
+ n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
+ }
+ if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
+ n->displayexp_toggle =
+ !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
+ }
+ if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
+ n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+ >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
+ n->brightness_toggle =
+ !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
+ }
+ if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
+ d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
+ n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
+ >> TP_NVRAM_POS_LEVEL_VOLUME;
+ n->mute = !!(d & TP_NVRAM_MASK_MUTE);
+ n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
+ }
+}
+
+#define TPACPI_COMPARE_KEY(__scancode, __member) \
+do { \
+ if ((event_mask & (1 << __scancode)) && \
+ oldn->__member != newn->__member) \
+ tpacpi_hotkey_send_key(__scancode); \
+} while (0)
+
+#define TPACPI_MAY_SEND_KEY(__scancode) \
+do { \
+ if (event_mask & (1 << __scancode)) \
+ tpacpi_hotkey_send_key(__scancode); \
+} while (0)
+
+static void issue_volchange(const unsigned int oldvol,
+ const unsigned int newvol,
+ const u32 event_mask)
+{
+ unsigned int i = oldvol;
+
+ while (i > newvol) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
+ i--;
+ }
+ while (i < newvol) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+ i++;
+ }
+}
+
+static void issue_brightnesschange(const unsigned int oldbrt,
+ const unsigned int newbrt,
+ const u32 event_mask)
+{
+ unsigned int i = oldbrt;
+
+ while (i > newbrt) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
+ i--;
+ }
+ while (i < newbrt) {
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
+ i++;
+ }
+}
+
+static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
+ struct tp_nvram_state *newn,
+ const u32 event_mask)
+{
+
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
+
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
+
+ TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
+
+ /*
+ * Handle volume
+ *
+ * This code is supposed to duplicate the IBM firmware behaviour:
+ * - Pressing MUTE issues mute hotkey message, even when already mute
+ * - Pressing Volume up/down issues volume up/down hotkey messages,
+ * even when already at maximum or minimum volume
+ * - The act of unmuting issues volume up/down notification,
+ * depending which key was used to unmute
+ *
+ * We are constrained to what the NVRAM can tell us, which is not much
+ * and certainly not enough if more than one volume hotkey was pressed
+ * since the last poll cycle.
+ *
+ * Just to make our life interesting, some newer Lenovo ThinkPads have
+ * bugs in the BIOS and may fail to update volume_toggle properly.
+ */
+ if (newn->mute) {
+ /* muted */
+ if (!oldn->mute ||
+ oldn->volume_toggle != newn->volume_toggle ||
+ oldn->volume_level != newn->volume_level) {
+ /* recently muted, or repeated mute keypress, or
+ * multiple presses ending in mute */
+ issue_volchange(oldn->volume_level, newn->volume_level,
+ event_mask);
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
+ }
+ } else {
+ /* unmute */
+ if (oldn->mute) {
+ /* recently unmuted, issue 'unmute' keypress */
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+ }
+ if (oldn->volume_level != newn->volume_level) {
+ issue_volchange(oldn->volume_level, newn->volume_level,
+ event_mask);
+ } else if (oldn->volume_toggle != newn->volume_toggle) {
+ /* repeated vol up/down keypress at end of scale ? */
+ if (newn->volume_level == 0)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
+ else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
+ }
+ }
+
+ /* handle brightness */
+ if (oldn->brightness_level != newn->brightness_level) {
+ issue_brightnesschange(oldn->brightness_level,
+ newn->brightness_level, event_mask);
+ } else if (oldn->brightness_toggle != newn->brightness_toggle) {
+ /* repeated key presses that didn't change state */
+ if (newn->brightness_level == 0)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
+ else if (newn->brightness_level >= bright_maxlvl
+ && !tp_features.bright_unkfw)
+ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
+ }
+
+#undef TPACPI_COMPARE_KEY
+#undef TPACPI_MAY_SEND_KEY
+}
+
+/*
+ * Polling driver
+ *
+ * We track all events in hotkey_source_mask all the time, since
+ * most of them are edge-based. We only issue those requested by
+ * hotkey_user_mask or hotkey_driver_mask, though.
+ */
+static int hotkey_kthread(void *data)
+{
+ struct tp_nvram_state s[2] = { 0 };
+ u32 poll_mask, event_mask;
+ unsigned int si, so;
+ unsigned long t;
+ unsigned int change_detector;
+ unsigned int poll_freq;
+ bool was_frozen;
+
+ if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
+ goto exit;
+
+ set_freezable();
+
+ so = 0;
+ si = 1;
+ t = 0;
+
+ /* Initial state for compares */
+ mutex_lock(&hotkey_thread_data_mutex);
+ change_detector = hotkey_config_change;
+ poll_mask = hotkey_source_mask;
+ event_mask = hotkey_source_mask &
+ (hotkey_driver_mask | hotkey_user_mask);
+ poll_freq = hotkey_poll_freq;
+ mutex_unlock(&hotkey_thread_data_mutex);
+ hotkey_read_nvram(&s[so], poll_mask);
+
+ while (!kthread_should_stop()) {
+ if (t == 0) {
+ if (likely(poll_freq))
+ t = 1000/poll_freq;
+ else
+ t = 100; /* should never happen... */
+ }
+ t = msleep_interruptible(t);
+ if (unlikely(kthread_freezable_should_stop(&was_frozen)))
+ break;
+
+ if (t > 0 && !was_frozen)
+ continue;
+
+ mutex_lock(&hotkey_thread_data_mutex);
+ if (was_frozen || hotkey_config_change != change_detector) {
+ /* forget old state on thaw or config change */
+ si = so;
+ t = 0;
+ change_detector = hotkey_config_change;
+ }
+ poll_mask = hotkey_source_mask;
+ event_mask = hotkey_source_mask &
+ (hotkey_driver_mask | hotkey_user_mask);
+ poll_freq = hotkey_poll_freq;
+ mutex_unlock(&hotkey_thread_data_mutex);
+
+ if (likely(poll_mask)) {
+ hotkey_read_nvram(&s[si], poll_mask);
+ if (likely(si != so)) {
+ hotkey_compare_and_issue_event(&s[so], &s[si],
+ event_mask);
+ }
+ }
+
+ so = si;
+ si ^= 1;
+ }
+
+exit:
+ return 0;
+}
+
+static void hotkey_poll_stop_sync(void)
+{
+ lockdep_assert_held(&hotkey_mutex);
+
+ if (tpacpi_hotkey_task) {
+ kthread_stop(tpacpi_hotkey_task);
+ tpacpi_hotkey_task = NULL;
+ }
+}
+
+static void hotkey_poll_setup(const bool may_warn)
+{
+ const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
+ const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
+
+ lockdep_assert_held(&hotkey_mutex);
+
+ if (hotkey_poll_freq > 0 &&
+ (poll_driver_mask ||
+ (poll_user_mask && tpacpi_inputdev->users > 0))) {
+ if (!tpacpi_hotkey_task) {
+ tpacpi_hotkey_task = kthread_run(hotkey_kthread,
+ NULL, TPACPI_NVRAM_KTHREAD_NAME);
+ if (IS_ERR(tpacpi_hotkey_task)) {
+ tpacpi_hotkey_task = NULL;
+ pr_err("could not create kernel thread for hotkey polling\n");
+ }
+ }
+ } else {
+ hotkey_poll_stop_sync();
+ if (may_warn && (poll_driver_mask || poll_user_mask) &&
+ hotkey_poll_freq == 0) {
+ pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
+ poll_user_mask, poll_driver_mask);
+ }
+ }
+}
+
+static void hotkey_poll_setup_safe(const bool may_warn)
+{
+ mutex_lock(&hotkey_mutex);
+ hotkey_poll_setup(may_warn);
+ mutex_unlock(&hotkey_mutex);
+}
+
+static void hotkey_poll_set_freq(unsigned int freq)
+{
+ lockdep_assert_held(&hotkey_mutex);
+
+ if (!freq)
+ hotkey_poll_stop_sync();
+
+ hotkey_poll_freq = freq;
+}
+
+#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static void hotkey_poll_setup(const bool __unused)
+{
+}
+
+static void hotkey_poll_setup_safe(const bool __unused)
+{
+}
+
+static void hotkey_poll_stop_sync(void)
+{
+}
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+static int hotkey_inputdev_open(struct input_dev *dev)
+{
+ switch (tpacpi_lifecycle) {
+ case TPACPI_LIFE_INIT:
+ case TPACPI_LIFE_RUNNING:
+ hotkey_poll_setup_safe(false);
+ return 0;
+ case TPACPI_LIFE_EXITING:
+ return -EBUSY;
+ }
+
+ /* Should only happen if tpacpi_lifecycle is corrupt */
+ BUG();
+ return -EBUSY;
+}
+
+static void hotkey_inputdev_close(struct input_dev *dev)
+{
+ /* disable hotkey polling when possible */
+ if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
+ !(hotkey_source_mask & hotkey_driver_mask))
+ hotkey_poll_setup_safe(false);
+}
+
+/* sysfs hotkey enable ------------------------------------------------- */
+static ssize_t hotkey_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res, status;
+
+ printk_deprecated_attribute("hotkey_enable",
+ "Hotkey reporting is always enabled");
+
+ res = hotkey_status_get(&status);
+ if (res)
+ return res;
+
+ return sysfs_emit(buf, "%d\n", status);
+}
+
+static ssize_t hotkey_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ printk_deprecated_attribute("hotkey_enable",
+ "Hotkeys can be disabled through hotkey_mask");
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ if (t == 0)
+ return -EPERM;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(hotkey_enable);
+
+/* sysfs hotkey mask --------------------------------------------------- */
+static ssize_t hotkey_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask);
+}
+
+static ssize_t hotkey_mask_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ if (parse_strtoul(buf, 0xffffffffUL, &t))
+ return -EINVAL;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ res = hotkey_user_mask_set(t);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ hotkey_poll_setup(true);
+#endif
+
+ mutex_unlock(&hotkey_mutex);
+
+ tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
+
+ return (res) ? res : count;
+}
+
+static DEVICE_ATTR_RW(hotkey_mask);
+
+/* sysfs hotkey bios_enabled ------------------------------------------- */
+static ssize_t hotkey_bios_enabled_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "0\n");
+}
+
+static DEVICE_ATTR_RO(hotkey_bios_enabled);
+
+/* sysfs hotkey bios_mask ---------------------------------------------- */
+static ssize_t hotkey_bios_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ printk_deprecated_attribute("hotkey_bios_mask",
+ "This attribute is useless.");
+ return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_bios_mask);
+
+/* sysfs hotkey all_mask ----------------------------------------------- */
+static ssize_t hotkey_all_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "0x%08x\n",
+ hotkey_all_mask | hotkey_source_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_all_mask);
+
+/* sysfs hotkey all_mask ----------------------------------------------- */
+static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "0x%08x\n",
+ hotkey_adaptive_all_mask | hotkey_source_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
+
+/* sysfs hotkey recommended_mask --------------------------------------- */
+static ssize_t hotkey_recommended_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "0x%08x\n",
+ (hotkey_all_mask | hotkey_source_mask)
+ & ~hotkey_reserved_mask);
+}
+
+static DEVICE_ATTR_RO(hotkey_recommended_mask);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+
+/* sysfs hotkey hotkey_source_mask ------------------------------------- */
+static ssize_t hotkey_source_mask_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask);
+}
+
+static ssize_t hotkey_source_mask_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ u32 r_ev;
+ int rc;
+
+ if (parse_strtoul(buf, 0xffffffffUL, &t) ||
+ ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
+ return -EINVAL;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ HOTKEY_CONFIG_CRITICAL_START
+ hotkey_source_mask = t;
+ HOTKEY_CONFIG_CRITICAL_END
+
+ rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
+ ~hotkey_source_mask);
+ hotkey_poll_setup(true);
+
+ /* check if events needed by the driver got disabled */
+ r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
+ & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
+
+ mutex_unlock(&hotkey_mutex);
+
+ if (rc < 0)
+ pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
+
+ if (r_ev)
+ pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
+ r_ev);
+
+ tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
+
+ return (rc < 0) ? rc : count;
+}
+
+static DEVICE_ATTR_RW(hotkey_source_mask);
+
+/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
+static ssize_t hotkey_poll_freq_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%d\n", hotkey_poll_freq);
+}
+
+static ssize_t hotkey_poll_freq_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 25, &t))
+ return -EINVAL;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ hotkey_poll_set_freq(t);
+ hotkey_poll_setup(true);
+
+ mutex_unlock(&hotkey_mutex);
+
+ tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(hotkey_poll_freq);
+
+#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
+
+/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
+static ssize_t hotkey_radio_sw_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ res = hotkey_get_wlsw();
+ if (res < 0)
+ return res;
+
+ /* Opportunistic update */
+ tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
+
+ return sysfs_emit(buf, "%d\n",
+ (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
+}
+
+static DEVICE_ATTR_RO(hotkey_radio_sw);
+
+static void hotkey_radio_sw_notify_change(void)
+{
+ if (tp_features.hotkey_wlsw)
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "hotkey_radio_sw");
+}
+
+/* sysfs hotkey tablet mode (pollable) --------------------------------- */
+static ssize_t hotkey_tablet_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res, s;
+ res = hotkey_get_tablet_mode(&s);
+ if (res < 0)
+ return res;
+
+ return sysfs_emit(buf, "%d\n", !!s);
+}
+
+static DEVICE_ATTR_RO(hotkey_tablet_mode);
+
+static void hotkey_tablet_mode_notify_change(void)
+{
+ if (tp_features.hotkey_tablet)
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "hotkey_tablet_mode");
+}
+
+/* sysfs wakeup reason (pollable) -------------------------------------- */
+static ssize_t hotkey_wakeup_reason_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason);
+}
+
+static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
+
+static void hotkey_wakeup_reason_notify_change(void)
+{
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "wakeup_reason");
+}
+
+/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
+static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack);
+}
+
+static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
+ hotkey_wakeup_hotunplug_complete_show, NULL);
+
+static void hotkey_wakeup_hotunplug_complete_notify_change(void)
+{
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
+ "wakeup_hotunplug_complete");
+}
+
+/* sysfs adaptive kbd mode --------------------------------------------- */
+
+static int adaptive_keyboard_get_mode(void);
+static int adaptive_keyboard_set_mode(int new_mode);
+
+enum ADAPTIVE_KEY_MODE {
+ HOME_MODE,
+ WEB_BROWSER_MODE,
+ WEB_CONFERENCE_MODE,
+ FUNCTION_MODE,
+ LAYFLAT_MODE
+};
+
+static ssize_t adaptive_kbd_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int current_mode;
+
+ current_mode = adaptive_keyboard_get_mode();
+ if (current_mode < 0)
+ return current_mode;
+
+ return sysfs_emit(buf, "%d\n", current_mode);
+}
+
+static ssize_t adaptive_kbd_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ if (parse_strtoul(buf, LAYFLAT_MODE, &t))
+ return -EINVAL;
+
+ res = adaptive_keyboard_set_mode(t);
+ return (res < 0) ? res : count;
+}
+
+static DEVICE_ATTR_RW(adaptive_kbd_mode);
+
+static struct attribute *adaptive_kbd_attributes[] = {
+ &dev_attr_adaptive_kbd_mode.attr,
+ NULL
+};
+
+static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return tp_features.has_adaptive_kbd ? attr->mode : 0;
+}
+
+static const struct attribute_group adaptive_kbd_attr_group = {
+ .is_visible = hadaptive_kbd_attr_is_visible,
+ .attrs = adaptive_kbd_attributes,
+};
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *hotkey_attributes[] = {
+ &dev_attr_hotkey_enable.attr,
+ &dev_attr_hotkey_bios_enabled.attr,
+ &dev_attr_hotkey_bios_mask.attr,
+ &dev_attr_wakeup_reason.attr,
+ &dev_attr_wakeup_hotunplug_complete.attr,
+ &dev_attr_hotkey_mask.attr,
+ &dev_attr_hotkey_all_mask.attr,
+ &dev_attr_hotkey_adaptive_all_mask.attr,
+ &dev_attr_hotkey_recommended_mask.attr,
+ &dev_attr_hotkey_tablet_mode.attr,
+ &dev_attr_hotkey_radio_sw.attr,
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ &dev_attr_hotkey_source_mask.attr,
+ &dev_attr_hotkey_poll_freq.attr,
+#endif
+ NULL
+};
+
+static umode_t hotkey_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ if (attr == &dev_attr_hotkey_tablet_mode.attr) {
+ if (!tp_features.hotkey_tablet)
+ return 0;
+ } else if (attr == &dev_attr_hotkey_radio_sw.attr) {
+ if (!tp_features.hotkey_wlsw)
+ return 0;
+ }
+
+ return attr->mode;
+}
+
+static const struct attribute_group hotkey_attr_group = {
+ .is_visible = hotkey_attr_is_visible,
+ .attrs = hotkey_attributes,
+};
+
+/*
+ * Sync both the hw and sw blocking state of all switches
+ */
+static void tpacpi_send_radiosw_update(void)
+{
+ int wlsw;
+
+ /*
+ * We must sync all rfkill controllers *before* issuing any
+ * rfkill input events, or we will race the rfkill core input
+ * handler.
+ *
+ * tpacpi_inputdev_send_mutex works as a synchronization point
+ * for the above.
+ *
+ * We optimize to avoid numerous calls to hotkey_get_wlsw.
+ */
+
+ wlsw = hotkey_get_wlsw();
+
+ /* Sync hw blocking state first if it is hw-blocked */
+ if (wlsw == TPACPI_RFK_RADIO_OFF)
+ tpacpi_rfk_update_hwblock_state(true);
+
+ /* Sync hw blocking state last if it is hw-unblocked */
+ if (wlsw == TPACPI_RFK_RADIO_ON)
+ tpacpi_rfk_update_hwblock_state(false);
+
+ /* Issue rfkill input event for WLSW switch */
+ if (!(wlsw < 0)) {
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_report_switch(tpacpi_inputdev,
+ SW_RFKILL_ALL, (wlsw > 0));
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ }
+
+ /*
+ * this can be unconditional, as we will poll state again
+ * if userspace uses the notify to read data
+ */
+ hotkey_radio_sw_notify_change();
+}
+
+static void hotkey_exit(void)
+{
+ mutex_lock(&hotkey_mutex);
+ hotkey_poll_stop_sync();
+ dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
+ "restoring original HKEY status and mask\n");
+ /* yes, there is a bitwise or below, we want the
+ * functions to be called even if one of them fail */
+ if (((tp_features.hotkey_mask &&
+ hotkey_mask_set(hotkey_orig_mask)) |
+ hotkey_status_set(false)) != 0)
+ pr_err("failed to restore hot key mask to BIOS defaults\n");
+
+ mutex_unlock(&hotkey_mutex);
+}
+
+/*
+ * HKEY quirks:
+ * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
+ */
+
+#define TPACPI_HK_Q_INIMASK 0x0001
+
+static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
+ TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
+ TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
+ TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
+ TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
+ TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
+ TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
+ TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
+ TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
+ TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
+ TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
+ TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
+ TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
+ TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
+ TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
+ TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
+ TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
+ TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
+ TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
+ TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
+};
+
+static int hotkey_init_tablet_mode(void)
+{
+ int in_tablet_mode = 0, res;
+ char *type = NULL;
+
+ if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
+ int has_tablet_mode;
+
+ in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
+ &has_tablet_mode);
+ /*
+ * The Yoga 11e series has 2 accelerometers described by a
+ * BOSC0200 ACPI node. This setup relies on a Windows service
+ * which calls special ACPI methods on this node to report
+ * the laptop/tent/tablet mode to the EC. The bmc150 iio driver
+ * does not support this, so skip the hotkey on these models.
+ */
+ if (has_tablet_mode && !dual_accel_detect())
+ tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
+ type = "GMMS";
+ } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
+ /* For X41t, X60t, X61t Tablets... */
+ tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
+ in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
+ type = "MHKG";
+ }
+
+ if (!tp_features.hotkey_tablet)
+ return 0;
+
+ pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
+ type, in_tablet_mode ? "tablet" : "laptop");
+
+ return in_tablet_mode;
+}
+
+static const struct key_entry keymap_ibm[] __initconst = {
+ /* Original hotkey mappings translated scancodes 0x00 - 0x1f */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } },
+ /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } },
+ /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } },
+ /*
+ * Volume: firmware always reacts and reprograms the built-in *extra* mixer.
+ * Suppressed by default through hotkey_reserved_mask.
+ */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } },
+ { KE_END }
+};
+
+static const struct key_entry keymap_lenovo[] __initconst = {
+ /* Original hotkey mappings translated scancodes 0x00 - 0x1f */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } },
+ /*
+ * These should be enabled --only-- when ACPI video is disabled and
+ * are handled in a special way by the init code.
+ */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } },
+ /* Suppressed by default through hotkey_reserved_mask. */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } },
+ /*
+ * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and
+ * reprograms the built-in *extra* mixer.
+ * T60?, T61, R60?, R61: firmware and EC tries to send these over
+ * the regular keyboard (not through tpacpi). There are still weird bugs
+ * re. MUTE. May cause the BIOS to interfere with the HDA mixer.
+ * Suppressed by default through hotkey_reserved_mask.
+ */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } },
+ /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } },
+ /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } },
+ /* Used by "Lenovo Quick Clean" */
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } },
+ { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } },
+ /*
+ * All mapping below are for raw untranslated hkey event codes mapped directly
+ * after switching to sparse keymap support. The mappings above use translated
+ * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key().
+ */
+ { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */
+ { KE_KEY, 0x1320, { KEY_LINK_PHONE } },
+ { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } },
+ { KE_END }
+};
+
+static int __init hotkey_init(struct ibm_init_struct *iibm)
+{
+ enum keymap_index {
+ TPACPI_KEYMAP_IBM_GENERIC = 0,
+ TPACPI_KEYMAP_LENOVO_GENERIC,
+ };
+
+ static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
+ /* Generic maps (fallback) */
+ {
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_KEYMAP_IBM_GENERIC,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
+ },
+ };
+
+ unsigned long keymap_id, quirks;
+ const struct key_entry *keymap;
+ bool radiosw_state = false;
+ bool tabletsw_state = false;
+ int hkeyv, res, status, camera_shutter_state;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "initializing hotkey subdriver\n");
+
+ BUG_ON(!tpacpi_inputdev);
+ BUG_ON(tpacpi_inputdev->open != NULL ||
+ tpacpi_inputdev->close != NULL);
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+ mutex_init(&hotkey_mutex);
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ mutex_init(&hotkey_thread_data_mutex);
+#endif
+
+ /* hotkey not supported on 570 */
+ tp_features.hotkey = hkey_handle != NULL;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "hotkeys are %s\n",
+ str_supported(tp_features.hotkey));
+
+ if (!tp_features.hotkey)
+ return -ENODEV;
+
+ quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
+ ARRAY_SIZE(tpacpi_hotkey_qtable));
+
+ tpacpi_disable_brightness_delay();
+
+ /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
+ A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
+ for HKEY interface version 0x100 */
+ if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "firmware HKEY interface version: 0x%x\n",
+ hkeyv);
+
+ switch (hkeyv >> 8) {
+ case 1:
+ /*
+ * MHKV 0x100 in A31, R40, R40e,
+ * T4x, X31, and later
+ */
+
+ /* Paranoia check AND init hotkey_all_mask */
+ if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
+ "MHKA", "qd")) {
+ pr_err("missing MHKA handler, please report this to %s\n",
+ TPACPI_MAIL);
+ /* Fallback: pre-init for FN+F3,F4,F12 */
+ hotkey_all_mask = 0x080cU;
+ } else {
+ tp_features.hotkey_mask = 1;
+ }
+ break;
+
+ case 2:
+ /*
+ * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
+ */
+
+ /* Paranoia check AND init hotkey_all_mask */
+ if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
+ "MHKA", "dd", 1)) {
+ pr_err("missing MHKA handler, please report this to %s\n",
+ TPACPI_MAIL);
+ /* Fallback: pre-init for FN+F3,F4,F12 */
+ hotkey_all_mask = 0x080cU;
+ } else {
+ tp_features.hotkey_mask = 1;
+ }
+
+ /*
+ * Check if we have an adaptive keyboard, like on the
+ * Lenovo Carbon X1 2014 (2nd Gen).
+ */
+ if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
+ "MHKA", "dd", 2)) {
+ if (hotkey_adaptive_all_mask != 0)
+ tp_features.has_adaptive_kbd = true;
+ } else {
+ tp_features.has_adaptive_kbd = false;
+ hotkey_adaptive_all_mask = 0x0U;
+ }
+ break;
+
+ default:
+ pr_err("unknown version of the HKEY interface: 0x%x\n",
+ hkeyv);
+ pr_err("please report this to %s\n", TPACPI_MAIL);
+ break;
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "hotkey masks are %s\n",
+ str_supported(tp_features.hotkey_mask));
+
+ /* Init hotkey_all_mask if not initialized yet */
+ if (!tp_features.hotkey_mask && !hotkey_all_mask &&
+ (quirks & TPACPI_HK_Q_INIMASK))
+ hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
+
+ /* Init hotkey_acpi_mask and hotkey_orig_mask */
+ if (tp_features.hotkey_mask) {
+ /* hotkey_source_mask *must* be zero for
+ * the first hotkey_mask_get to return hotkey_orig_mask */
+ mutex_lock(&hotkey_mutex);
+ res = hotkey_mask_get();
+ mutex_unlock(&hotkey_mutex);
+ if (res)
+ return res;
+
+ hotkey_orig_mask = hotkey_acpi_mask;
+ } else {
+ hotkey_orig_mask = hotkey_all_mask;
+ hotkey_acpi_mask = hotkey_all_mask;
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wlswemul) {
+ tp_features.hotkey_wlsw = 1;
+ radiosw_state = !!tpacpi_wlsw_emulstate;
+ pr_info("radio switch emulation enabled\n");
+ } else
+#endif
+ /* Not all thinkpads have a hardware radio switch */
+ if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
+ tp_features.hotkey_wlsw = 1;
+ radiosw_state = !!status;
+ pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0)));
+ }
+
+ tabletsw_state = hotkey_init_tablet_mode();
+
+ /* Set up key map */
+ keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
+ ARRAY_SIZE(tpacpi_keymap_qtable));
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "using keymap number %lu\n", keymap_id);
+
+ /* Keys which should be reserved on both IBM and Lenovo models */
+ hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK |
+ TP_ACPI_HKEY_VOLUP_MASK |
+ TP_ACPI_HKEY_VOLDWN_MASK |
+ TP_ACPI_HKEY_MUTE_MASK;
+ /*
+ * Reserve brightness up/down unconditionally on IBM models, on Lenovo
+ * models these are disabled based on acpi_video_get_backlight_type().
+ */
+ if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) {
+ hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
+ TP_ACPI_HKEY_BRGHTDWN_MASK;
+ keymap = keymap_ibm;
+ } else {
+ keymap = keymap_lenovo;
+ }
+
+ res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL);
+ if (res)
+ return res;
+
+ camera_shutter_state = get_camera_shutter();
+ if (camera_shutter_state >= 0) {
+ input_set_capability(tpacpi_inputdev, EV_SW, SW_CAMERA_LENS_COVER);
+ input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state);
+ }
+
+ if (tp_features.hotkey_wlsw) {
+ input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
+ input_report_switch(tpacpi_inputdev,
+ SW_RFKILL_ALL, radiosw_state);
+ }
+ if (tp_features.hotkey_tablet) {
+ input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
+ input_report_switch(tpacpi_inputdev,
+ SW_TABLET_MODE, tabletsw_state);
+ }
+
+ /* Do not issue duplicate brightness change events to
+ * userspace. tpacpi_detect_brightness_capabilities() must have
+ * been called before this point */
+ if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
+ pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
+ pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
+
+ /* Disable brightness up/down on Lenovo thinkpads when
+ * ACPI is handling them, otherwise it is plain impossible
+ * for userspace to do something even remotely sane */
+ hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
+ TP_ACPI_HKEY_BRGHTDWN_MASK;
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
+ hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
+ & ~hotkey_all_mask
+ & ~hotkey_reserved_mask;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "hotkey source mask 0x%08x, polling freq %u\n",
+ hotkey_source_mask, hotkey_poll_freq);
+#endif
+
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "enabling firmware HKEY event interface...\n");
+ res = hotkey_status_set(true);
+ if (res) {
+ hotkey_exit();
+ return res;
+ }
+ mutex_lock(&hotkey_mutex);
+ res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
+ | hotkey_driver_mask)
+ & ~hotkey_source_mask);
+ mutex_unlock(&hotkey_mutex);
+ if (res < 0 && res != -ENXIO) {
+ hotkey_exit();
+ return res;
+ }
+ hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
+ & ~hotkey_reserved_mask;
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
+ "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
+ hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
+
+ tpacpi_inputdev->open = &hotkey_inputdev_open;
+ tpacpi_inputdev->close = &hotkey_inputdev_close;
+
+ hotkey_poll_setup_safe(true);
+
+ /* Enable doubletap by default */
+ tp_features.trackpoint_doubletap = 1;
+
+ return 0;
+}
+
+/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
+ * mode, Web conference mode, Function mode and Lay-flat mode.
+ * We support Home mode and Function mode currently.
+ *
+ * Will consider support rest of modes in future.
+ *
+ */
+static const int adaptive_keyboard_modes[] = {
+ HOME_MODE,
+/* WEB_BROWSER_MODE = 2,
+ WEB_CONFERENCE_MODE = 3, */
+ FUNCTION_MODE
+};
+
+/* press Fn key a while second, it will switch to Function Mode. Then
+ * release Fn key, previous mode be restored.
+ */
+static bool adaptive_keyboard_mode_is_saved;
+static int adaptive_keyboard_prev_mode;
+
+static int adaptive_keyboard_get_mode(void)
+{
+ int mode = 0;
+
+ if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
+ pr_err("Cannot read adaptive keyboard mode\n");
+ return -EIO;
+ }
+
+ return mode;
+}
+
+static int adaptive_keyboard_set_mode(int new_mode)
+{
+ if (new_mode < 0 ||
+ new_mode > LAYFLAT_MODE)
+ return -EINVAL;
+
+ if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
+ pr_err("Cannot set adaptive keyboard mode\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int adaptive_keyboard_get_next_mode(int mode)
+{
+ size_t i;
+ size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
+
+ for (i = 0; i <= max_mode; i++) {
+ if (adaptive_keyboard_modes[i] == mode)
+ break;
+ }
+
+ if (i >= max_mode)
+ i = 0;
+ else
+ i++;
+
+ return adaptive_keyboard_modes[i];
+}
+
+static void adaptive_keyboard_change_row(void)
+{
+ int mode;
+
+ if (adaptive_keyboard_mode_is_saved) {
+ mode = adaptive_keyboard_prev_mode;
+ adaptive_keyboard_mode_is_saved = false;
+ } else {
+ mode = adaptive_keyboard_get_mode();
+ if (mode < 0)
+ return;
+ mode = adaptive_keyboard_get_next_mode(mode);
+ }
+
+ adaptive_keyboard_set_mode(mode);
+}
+
+static void adaptive_keyboard_s_quickview_row(void)
+{
+ int mode;
+
+ mode = adaptive_keyboard_get_mode();
+ if (mode < 0)
+ return;
+
+ adaptive_keyboard_prev_mode = mode;
+ adaptive_keyboard_mode_is_saved = true;
+
+ adaptive_keyboard_set_mode(FUNCTION_MODE);
+}
+
+/* 0x1000-0x1FFF: key presses */
+static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev)
+{
+ /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */
+ if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) {
+ *send_acpi_ev = false;
+
+ /* Original hotkeys may be polled from NVRAM instead */
+ unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START;
+ if (hotkey_source_mask & (1 << scancode))
+ return true;
+ }
+
+ return tpacpi_input_send_key(hkey, send_acpi_ev);
+}
+
+/* 0x2000-0x2FFF: Wakeup reason */
+static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev)
+{
+ switch (hkey) {
+ case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
+ case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
+ hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
+ *send_acpi_ev = false;
+ break;
+
+ case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
+ case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
+ hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
+ *send_acpi_ev = false;
+ break;
+
+ case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
+ case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
+ pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
+ /* how to auto-heal: */
+ /* 2313: woke up from S3, go to S4/S5 */
+ /* 2413: woke up from S4, go to S5 */
+ break;
+
+ default:
+ return false;
+ }
+
+ if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
+ pr_info("woke up due to a hot-unplug request...\n");
+ hotkey_wakeup_reason_notify_change();
+ }
+ return true;
+}
+
+/* 0x4000-0x4FFF: dock-related events */
+static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev)
+{
+ switch (hkey) {
+ case TP_HKEY_EV_UNDOCK_ACK:
+ /* ACPI undock operation completed after wakeup */
+ hotkey_autosleep_ack = 1;
+ pr_info("undocked\n");
+ hotkey_wakeup_hotunplug_complete_notify_change();
+ return true;
+
+ case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
+ pr_info("docked into hotplug port replicator\n");
+ return true;
+ case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
+ pr_info("undocked from hotplug port replicator\n");
+ return true;
+
+ /*
+ * Deliberately ignore attaching and detaching the keybord cover to avoid
+ * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events
+ * to userspace.
+ *
+ * Please refer to the following thread for more information and a preliminary
+ * implementation using the GTOP ("Get Tablet OPtions") interface that could be
+ * extended to other attachment options of the ThinkPad X1 Tablet series, such as
+ * the Pico cartridge dock module:
+ * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/
+ */
+ case TP_HKEY_EV_KBD_COVER_ATTACH:
+ case TP_HKEY_EV_KBD_COVER_DETACH:
+ *send_acpi_ev = false;
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+/* 0x5000-0x5FFF: human interface helpers */
+static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev)
+{
+ switch (hkey) {
+ case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
+ case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
+ return true;
+
+ case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
+ case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
+ tpacpi_input_send_tabletsw();
+ hotkey_tablet_mode_notify_change();
+ *send_acpi_ev = false;
+ return true;
+
+ case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
+ case TP_HKEY_EV_LID_OPEN: /* Lid opened */
+ case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
+ /* do not propagate these events */
+ *send_acpi_ev = false;
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+static void thermal_dump_all_sensors(void);
+static void palmsensor_refresh(void);
+
+/* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
+static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev)
+{
+ switch (hkey) {
+ case TP_HKEY_EV_THM_TABLE_CHANGED:
+ pr_debug("EC reports: Thermal Table has changed\n");
+ /* recommended action: do nothing, we don't have
+ * Lenovo ATM information */
+ return true;
+ case TP_HKEY_EV_THM_CSM_COMPLETED:
+ pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
+ /* Thermal event - pass on to event handler */
+ tpacpi_driver_event(hkey);
+ return true;
+ case TP_HKEY_EV_THM_TRANSFM_CHANGED:
+ pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
+ /* recommended action: do nothing, we don't have
+ * Lenovo ATM information */
+ return true;
+ case TP_HKEY_EV_ALARM_BAT_HOT:
+ pr_crit("THERMAL ALARM: battery is too hot!\n");
+ /* recommended action: warn user through gui */
+ break;
+ case TP_HKEY_EV_ALARM_BAT_XHOT:
+ pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
+ /* recommended action: immediate sleep/hibernate */
+ break;
+ case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE:
+ pr_debug("Battery Info: battery charge threshold changed\n");
+ /* User changed charging threshold. No action needed */
+ return true;
+ case TP_HKEY_EV_ALARM_SENSOR_HOT:
+ pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
+ /* recommended action: warn user through gui, that */
+ /* some internal component is too hot */
+ break;
+ case TP_HKEY_EV_ALARM_SENSOR_XHOT:
+ pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
+ /* recommended action: immediate sleep/hibernate */
+ break;
+ case TP_HKEY_EV_AC_CHANGED:
+ /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
+ * AC status changed; can be triggered by plugging or
+ * unplugging AC adapter, docking or undocking. */
+
+ fallthrough;
+
+ case TP_HKEY_EV_KEY_NUMLOCK:
+ case TP_HKEY_EV_KEY_FN:
+ /* key press events, we just ignore them as long as the EC
+ * is still reporting them in the normal keyboard stream */
+ *send_acpi_ev = false;
+ return true;
+
+ case TP_HKEY_EV_KEY_FN_ESC:
+ /* Get the media key status to force the status LED to update */
+ acpi_evalf(hkey_handle, NULL, "GMKS", "v");
+ *send_acpi_ev = false;
+ return true;
+
+ case TP_HKEY_EV_TABLET_CHANGED:
+ tpacpi_input_send_tabletsw();
+ hotkey_tablet_mode_notify_change();
+ *send_acpi_ev = false;
+ return true;
+
+ case TP_HKEY_EV_PALM_DETECTED:
+ case TP_HKEY_EV_PALM_UNDETECTED:
+ /* palm detected - pass on to event handler */
+ palmsensor_refresh();
+ return true;
+
+ default:
+ /* report simply as unknown, no sensor dump */
+ return false;
+ }
+
+ thermal_dump_all_sensors();
+ return true;
+}
+
+static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev)
+{
+ switch (hkey) {
+ case TP_HKEY_EV_TRACK_DOUBLETAP:
+ if (tp_features.trackpoint_doubletap)
+ tpacpi_input_send_key(hkey, send_acpi_ev);
+
+ return true;
+ default:
+ return false;
+ }
+}
+
+static void hotkey_notify(struct ibm_struct *ibm, u32 event)
+{
+ u32 hkey;
+ bool send_acpi_ev;
+ bool known_ev;
+
+ if (event != 0x80) {
+ pr_err("unknown HKEY notification event %d\n", event);
+ /* forward it to userspace, maybe it knows how to handle it */
+ acpi_bus_generate_netlink_event(
+ ibm->acpi->device->pnp.device_class,
+ dev_name(&ibm->acpi->device->dev),
+ event, 0);
+ return;
+ }
+
+ while (1) {
+ if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
+ pr_err("failed to retrieve HKEY event\n");
+ return;
+ }
+
+ if (hkey == 0) {
+ /* queue empty */
+ return;
+ }
+
+ send_acpi_ev = true;
+ known_ev = false;
+
+ switch (hkey >> 12) {
+ case 1:
+ /* 0x1000-0x1FFF: key presses */
+ known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev);
+ break;
+ case 2:
+ /* 0x2000-0x2FFF: Wakeup reason */
+ known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev);
+ break;
+ case 3:
+ /* 0x3000-0x3FFF: bay-related wakeups */
+ switch (hkey) {
+ case TP_HKEY_EV_BAYEJ_ACK:
+ hotkey_autosleep_ack = 1;
+ pr_info("bay ejected\n");
+ hotkey_wakeup_hotunplug_complete_notify_change();
+ known_ev = true;
+ break;
+ case TP_HKEY_EV_OPTDRV_EJ:
+ /* FIXME: kick libata if SATA link offline */
+ known_ev = true;
+ break;
+ }
+ break;
+ case 4:
+ /* 0x4000-0x4FFF: dock-related events */
+ known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev);
+ break;
+ case 5:
+ /* 0x5000-0x5FFF: human interface helpers */
+ known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev);
+ break;
+ case 6:
+ /* 0x6000-0x6FFF: thermal alarms/notices and
+ * keyboard events */
+ known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev);
+ break;
+ case 7:
+ /* 0x7000-0x7FFF: misc */
+ if (tp_features.hotkey_wlsw &&
+ hkey == TP_HKEY_EV_RFKILL_CHANGED) {
+ tpacpi_send_radiosw_update();
+ send_acpi_ev = false;
+ known_ev = true;
+ }
+ break;
+ case 8:
+ /* 0x8000-0x8FFF: misc2 */
+ known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev);
+ break;
+ }
+ if (!known_ev) {
+ pr_notice("unhandled HKEY event 0x%04x\n", hkey);
+ pr_notice("please report the conditions when this event happened to %s\n",
+ TPACPI_MAIL);
+ }
+
+ /* netlink events */
+ if (send_acpi_ev) {
+ acpi_bus_generate_netlink_event(
+ ibm->acpi->device->pnp.device_class,
+ dev_name(&ibm->acpi->device->dev),
+ event, hkey);
+ }
+ }
+}
+
+static void hotkey_suspend(void)
+{
+ /* Do these on suspend, we get the events on early resume! */
+ hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
+ hotkey_autosleep_ack = 0;
+
+ /* save previous mode of adaptive keyboard of X1 Carbon */
+ if (tp_features.has_adaptive_kbd) {
+ if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
+ "GTRW", "dd", 0)) {
+ pr_err("Cannot read adaptive keyboard mode.\n");
+ }
+ }
+}
+
+static void hotkey_resume(void)
+{
+ tpacpi_disable_brightness_delay();
+
+ mutex_lock(&hotkey_mutex);
+ if (hotkey_status_set(true) < 0 ||
+ hotkey_mask_set(hotkey_acpi_mask) < 0)
+ pr_err("error while attempting to reset the event firmware interface\n");
+ mutex_unlock(&hotkey_mutex);
+
+ tpacpi_send_radiosw_update();
+ tpacpi_input_send_tabletsw();
+ hotkey_tablet_mode_notify_change();
+ hotkey_wakeup_reason_notify_change();
+ hotkey_wakeup_hotunplug_complete_notify_change();
+ hotkey_poll_setup_safe(false);
+
+ /* restore previous mode of adapive keyboard of X1 Carbon */
+ if (tp_features.has_adaptive_kbd) {
+ if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
+ adaptive_keyboard_prev_mode)) {
+ pr_err("Cannot set adaptive keyboard mode.\n");
+ }
+ }
+}
+
+/* procfs -------------------------------------------------------------- */
+static int hotkey_read(struct seq_file *m)
+{
+ int res, status;
+
+ if (!tp_features.hotkey) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ return 0;
+ }
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+ res = hotkey_status_get(&status);
+ if (!res)
+ res = hotkey_mask_get();
+ mutex_unlock(&hotkey_mutex);
+ if (res)
+ return res;
+
+ seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
+ if (hotkey_all_mask) {
+ seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
+ seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
+ } else {
+ seq_printf(m, "mask:\t\tnot supported\n");
+ seq_printf(m, "commands:\tenable, disable, reset\n");
+ }
+
+ return 0;
+}
+
+static void hotkey_enabledisable_warn(bool enable)
+{
+ tpacpi_log_usertask("procfs hotkey enable/disable");
+ if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
+ pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
+ pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
+}
+
+static int hotkey_write(char *buf)
+{
+ int res;
+ u32 mask;
+ char *cmd;
+
+ if (!tp_features.hotkey)
+ return -ENODEV;
+
+ if (mutex_lock_killable(&hotkey_mutex))
+ return -ERESTARTSYS;
+
+ mask = hotkey_user_mask;
+
+ res = 0;
+ while ((cmd = strsep(&buf, ","))) {
+ if (strstarts(cmd, "enable")) {
+ hotkey_enabledisable_warn(1);
+ } else if (strstarts(cmd, "disable")) {
+ hotkey_enabledisable_warn(0);
+ res = -EPERM;
+ } else if (strstarts(cmd, "reset")) {
+ mask = (hotkey_all_mask | hotkey_source_mask)
+ & ~hotkey_reserved_mask;
+ } else if (sscanf(cmd, "0x%x", &mask) == 1) {
+ /* mask set */
+ } else if (sscanf(cmd, "%x", &mask) == 1) {
+ /* mask set */
+ } else {
+ res = -EINVAL;
+ goto errexit;
+ }
+ }
+
+ if (!res) {
+ tpacpi_disclose_usertask("procfs hotkey",
+ "set mask to 0x%08x\n", mask);
+ res = hotkey_user_mask_set(mask);
+ }
+
+errexit:
+ mutex_unlock(&hotkey_mutex);
+ return res;
+}
+
+static const struct acpi_device_id ibm_htk_device_ids[] = {
+ {TPACPI_ACPI_IBM_HKEY_HID, 0},
+ {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
+ {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
+ {"", 0},
+};
+
+static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
+ .hid = ibm_htk_device_ids,
+ .notify = hotkey_notify,
+ .handle = &hkey_handle,
+ .type = ACPI_DEVICE_NOTIFY,
+};
+
+static struct ibm_struct hotkey_driver_data = {
+ .name = "hotkey",
+ .read = hotkey_read,
+ .write = hotkey_write,
+ .exit = hotkey_exit,
+ .resume = hotkey_resume,
+ .suspend = hotkey_suspend,
+ .acpi = &ibm_hotkey_acpidriver,
+};
+
+/*************************************************************************
+ * Bluetooth subdriver
+ */
+
+enum {
+ /* ACPI GBDC/SBDC bits */
+ TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
+ TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
+ TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
+ 0 = disable, 1 = enable */
+};
+
+enum {
+ /* ACPI \BLTH commands */
+ TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
+ TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
+ TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
+ TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
+ TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
+};
+
+#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
+
+static int bluetooth_get_status(void)
+{
+ int status;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_bluetoothemul)
+ return (tpacpi_bluetooth_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
+ return -EIO;
+
+ return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int bluetooth_set_status(enum tpacpi_rfkill_state state)
+{
+ int status;
+
+ vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n",
+ str_enable_disable(state == TPACPI_RFK_RADIO_ON));
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_bluetoothemul) {
+ tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
+ return 0;
+ }
+#endif
+
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_BLUETOOTH_RADIOSSW
+ | TP_ACPI_BLUETOOTH_RESUMECTRL;
+ else
+ status = 0;
+
+ if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
+ return -EIO;
+
+ return 0;
+}
+
+/* sysfs bluetooth enable ---------------------------------------------- */
+static ssize_t bluetooth_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
+ attr, buf);
+}
+
+static ssize_t bluetooth_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
+ attr, buf, count);
+}
+
+static DEVICE_ATTR_RW(bluetooth_enable);
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *bluetooth_attributes[] = {
+ &dev_attr_bluetooth_enable.attr,
+ NULL
+};
+
+static umode_t bluetooth_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return tp_features.bluetooth ? attr->mode : 0;
+}
+
+static const struct attribute_group bluetooth_attr_group = {
+ .is_visible = bluetooth_attr_is_visible,
+ .attrs = bluetooth_attributes,
+};
+
+static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
+ .get_status = bluetooth_get_status,
+ .set_status = bluetooth_set_status,
+};
+
+static void bluetooth_shutdown(void)
+{
+ /* Order firmware to save current state to NVRAM */
+ if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+ TP_ACPI_BLTH_SAVE_STATE))
+ pr_notice("failed to save bluetooth state to NVRAM\n");
+ else
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "bluetooth state saved to NVRAM\n");
+}
+
+static void bluetooth_exit(void)
+{
+ tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
+ bluetooth_shutdown();
+}
+
+static const struct dmi_system_id fwbug_list[] __initconst = {
+ {
+ .ident = "ThinkPad E485",
+ .driver_data = &quirk_btusb_bug,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_BOARD_NAME, "20KU"),
+ },
+ },
+ {
+ .ident = "ThinkPad E585",
+ .driver_data = &quirk_btusb_bug,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_BOARD_NAME, "20KV"),
+ },
+ },
+ {
+ .ident = "ThinkPad A285 - 20MW",
+ .driver_data = &quirk_btusb_bug,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_BOARD_NAME, "20MW"),
+ },
+ },
+ {
+ .ident = "ThinkPad A285 - 20MX",
+ .driver_data = &quirk_btusb_bug,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_BOARD_NAME, "20MX"),
+ },
+ },
+ {
+ .ident = "ThinkPad A485 - 20MU",
+ .driver_data = &quirk_btusb_bug,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_BOARD_NAME, "20MU"),
+ },
+ },
+ {
+ .ident = "ThinkPad A485 - 20MV",
+ .driver_data = &quirk_btusb_bug,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_BOARD_NAME, "20MV"),
+ },
+ },
+ {}
+};
+
+static const struct pci_device_id fwbug_cards_ids[] __initconst = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
+ {}
+};
+
+
+static int __init have_bt_fwbug(void)
+{
+ /*
+ * Some AMD based ThinkPads have a firmware bug that calling
+ * "GBDC" will cause bluetooth on Intel wireless cards blocked
+ */
+ if (tp_features.quirks && tp_features.quirks->btusb_bug &&
+ pci_dev_present(fwbug_cards_ids)) {
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ FW_BUG "disable bluetooth subdriver for Intel cards\n");
+ return 1;
+ } else
+ return 0;
+}
+
+static int __init bluetooth_init(struct ibm_init_struct *iibm)
+{
+ int res;
+ int status = 0;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "initializing bluetooth subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
+ G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
+ tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
+ acpi_evalf(hkey_handle, &status, "GBDC", "qd");
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "bluetooth is %s, status 0x%02x\n",
+ str_supported(tp_features.bluetooth),
+ status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_bluetoothemul) {
+ tp_features.bluetooth = 1;
+ pr_info("bluetooth switch emulation enabled\n");
+ } else
+#endif
+ if (tp_features.bluetooth &&
+ !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
+ /* no bluetooth hardware present in system */
+ tp_features.bluetooth = 0;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "bluetooth hardware not installed\n");
+ }
+
+ if (!tp_features.bluetooth)
+ return -ENODEV;
+
+ res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
+ &bluetooth_tprfk_ops,
+ RFKILL_TYPE_BLUETOOTH,
+ TPACPI_RFK_BLUETOOTH_SW_NAME,
+ true);
+ return res;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int bluetooth_read(struct seq_file *m)
+{
+ return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
+}
+
+static int bluetooth_write(char *buf)
+{
+ return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
+}
+
+static struct ibm_struct bluetooth_driver_data = {
+ .name = "bluetooth",
+ .read = bluetooth_read,
+ .write = bluetooth_write,
+ .exit = bluetooth_exit,
+ .shutdown = bluetooth_shutdown,
+};
+
+/*************************************************************************
+ * Wan subdriver
+ */
+
+enum {
+ /* ACPI GWAN/SWAN bits */
+ TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
+ TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
+ TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
+ 0 = disable, 1 = enable */
+};
+
+#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
+
+static int wan_get_status(void)
+{
+ int status;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wwanemul)
+ return (tpacpi_wwan_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
+ return -EIO;
+
+ return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int wan_set_status(enum tpacpi_rfkill_state state)
+{
+ int status;
+
+ vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n",
+ str_enable_disable(state == TPACPI_RFK_RADIO_ON));
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wwanemul) {
+ tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
+ return 0;
+ }
+#endif
+
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_WANCARD_RADIOSSW
+ | TP_ACPI_WANCARD_RESUMECTRL;
+ else
+ status = 0;
+
+ if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
+ return -EIO;
+
+ return 0;
+}
+
+/* sysfs wan enable ---------------------------------------------------- */
+static ssize_t wan_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
+ attr, buf);
+}
+
+static ssize_t wan_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
+ attr, buf, count);
+}
+
+static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
+ wan_enable_show, wan_enable_store);
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *wan_attributes[] = {
+ &dev_attr_wwan_enable.attr,
+ NULL
+};
+
+static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
+ int n)
+{
+ return tp_features.wan ? attr->mode : 0;
+}
+
+static const struct attribute_group wan_attr_group = {
+ .is_visible = wan_attr_is_visible,
+ .attrs = wan_attributes,
+};
+
+static const struct tpacpi_rfk_ops wan_tprfk_ops = {
+ .get_status = wan_get_status,
+ .set_status = wan_set_status,
+};
+
+static void wan_shutdown(void)
+{
+ /* Order firmware to save current state to NVRAM */
+ if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
+ TP_ACPI_WGSV_SAVE_STATE))
+ pr_notice("failed to save WWAN state to NVRAM\n");
+ else
+ vdbg_printk(TPACPI_DBG_RFKILL,
+ "WWAN state saved to NVRAM\n");
+}
+
+static void wan_exit(void)
+{
+ tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
+ wan_shutdown();
+}
+
+static int __init wan_init(struct ibm_init_struct *iibm)
+{
+ int res;
+ int status = 0;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "initializing wan subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ tp_features.wan = hkey_handle &&
+ acpi_evalf(hkey_handle, &status, "GWAN", "qd");
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "wan is %s, status 0x%02x\n",
+ str_supported(tp_features.wan),
+ status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_wwanemul) {
+ tp_features.wan = 1;
+ pr_info("wwan switch emulation enabled\n");
+ } else
+#endif
+ if (tp_features.wan &&
+ !(status & TP_ACPI_WANCARD_HWPRESENT)) {
+ /* no wan hardware present in system */
+ tp_features.wan = 0;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "wan hardware not installed\n");
+ }
+
+ if (!tp_features.wan)
+ return -ENODEV;
+
+ res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
+ &wan_tprfk_ops,
+ RFKILL_TYPE_WWAN,
+ TPACPI_RFK_WWAN_SW_NAME,
+ true);
+ return res;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int wan_read(struct seq_file *m)
+{
+ return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
+}
+
+static int wan_write(char *buf)
+{
+ return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
+}
+
+static struct ibm_struct wan_driver_data = {
+ .name = "wan",
+ .read = wan_read,
+ .write = wan_write,
+ .exit = wan_exit,
+ .shutdown = wan_shutdown,
+};
+
+/*************************************************************************
+ * UWB subdriver
+ */
+
+enum {
+ /* ACPI GUWB/SUWB bits */
+ TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
+ TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
+};
+
+#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
+
+static int uwb_get_status(void)
+{
+ int status;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_uwbemul)
+ return (tpacpi_uwb_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+#endif
+
+ if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
+ return -EIO;
+
+ return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
+}
+
+static int uwb_set_status(enum tpacpi_rfkill_state state)
+{
+ int status;
+
+ vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n",
+ str_enable_disable(state == TPACPI_RFK_RADIO_ON));
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_uwbemul) {
+ tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
+ return 0;
+ }
+#endif
+
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_UWB_RADIOSSW;
+ else
+ status = 0;
+
+ if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
+ return -EIO;
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
+ .get_status = uwb_get_status,
+ .set_status = uwb_set_status,
+};
+
+static void uwb_exit(void)
+{
+ tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
+}
+
+static int __init uwb_init(struct ibm_init_struct *iibm)
+{
+ int res;
+ int status = 0;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "initializing uwb subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ tp_features.uwb = hkey_handle &&
+ acpi_evalf(hkey_handle, &status, "GUWB", "qd");
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
+ "uwb is %s, status 0x%02x\n",
+ str_supported(tp_features.uwb),
+ status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ if (dbg_uwbemul) {
+ tp_features.uwb = 1;
+ pr_info("uwb switch emulation enabled\n");
+ } else
+#endif
+ if (tp_features.uwb &&
+ !(status & TP_ACPI_UWB_HWPRESENT)) {
+ /* no uwb hardware present in system */
+ tp_features.uwb = 0;
+ dbg_printk(TPACPI_DBG_INIT,
+ "uwb hardware not installed\n");
+ }
+
+ if (!tp_features.uwb)
+ return -ENODEV;
+
+ res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
+ &uwb_tprfk_ops,
+ RFKILL_TYPE_UWB,
+ TPACPI_RFK_UWB_SW_NAME,
+ false);
+ return res;
+}
+
+static struct ibm_struct uwb_driver_data = {
+ .name = "uwb",
+ .exit = uwb_exit,
+ .flags.experimental = 1,
+};
+
+/*************************************************************************
+ * Video subdriver
+ */
+
+#ifdef CONFIG_THINKPAD_ACPI_VIDEO
+
+enum video_access_mode {
+ TPACPI_VIDEO_NONE = 0,
+ TPACPI_VIDEO_570, /* 570 */
+ TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
+ TPACPI_VIDEO_NEW, /* all others */
+};
+
+enum { /* video status flags, based on VIDEO_570 */
+ TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
+ TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
+ TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
+};
+
+enum { /* TPACPI_VIDEO_570 constants */
+ TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
+ TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
+ * video_status_flags */
+ TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
+ TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
+};
+
+static enum video_access_mode video_supported;
+static int video_orig_autosw;
+
+static int video_autosw_get(void);
+static int video_autosw_set(int enable);
+
+TPACPI_HANDLE(vid, root,
+ "\\_SB.PCI.AGP.VGA", /* 570 */
+ "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
+ "\\_SB.PCI0.VID0", /* 770e */
+ "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
+ "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
+ "\\_SB.PCI0.AGP.VID", /* all others */
+ ); /* R30, R31 */
+
+TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
+
+static int __init video_init(struct ibm_init_struct *iibm)
+{
+ int ivga;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(vid);
+ if (tpacpi_is_ibm())
+ TPACPI_ACPIHANDLE_INIT(vid2);
+
+ if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
+ /* G41, assume IVGA doesn't change */
+ vid_handle = vid2_handle;
+
+ if (!vid_handle)
+ /* video switching not supported on R30, R31 */
+ video_supported = TPACPI_VIDEO_NONE;
+ else if (tpacpi_is_ibm() &&
+ acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
+ /* 570 */
+ video_supported = TPACPI_VIDEO_570;
+ else if (tpacpi_is_ibm() &&
+ acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
+ /* 600e/x, 770e, 770x */
+ video_supported = TPACPI_VIDEO_770;
+ else
+ /* all others */
+ video_supported = TPACPI_VIDEO_NEW;
+
+ vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
+ str_supported(video_supported != TPACPI_VIDEO_NONE),
+ video_supported);
+
+ return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV;
+}
+
+static void video_exit(void)
+{
+ dbg_printk(TPACPI_DBG_EXIT,
+ "restoring original video autoswitch mode\n");
+ if (video_autosw_set(video_orig_autosw))
+ pr_err("error while trying to restore original video autoswitch mode\n");
+}
+
+static int video_outputsw_get(void)
+{
+ int status = 0;
+ int i;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
+ TP_ACPI_VIDEO_570_PHSCMD))
+ return -EIO;
+ status = i & TP_ACPI_VIDEO_570_PHSMASK;
+ break;
+ case TPACPI_VIDEO_770:
+ if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_LCD;
+ if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_CRT;
+ break;
+ case TPACPI_VIDEO_NEW:
+ if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
+ !acpi_evalf(NULL, &i, "\\VCDC", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_CRT;
+
+ if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
+ !acpi_evalf(NULL, &i, "\\VCDL", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_LCD;
+ if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
+ return -EIO;
+ if (i)
+ status |= TP_ACPI_VIDEO_S_DVI;
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return status;
+}
+
+static int video_outputsw_set(int status)
+{
+ int autosw;
+ int res = 0;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ res = acpi_evalf(NULL, NULL,
+ "\\_SB.PHS2", "vdd",
+ TP_ACPI_VIDEO_570_PHS2CMD,
+ status | TP_ACPI_VIDEO_570_PHS2SET);
+ break;
+ case TPACPI_VIDEO_770:
+ autosw = video_autosw_get();
+ if (autosw < 0)
+ return autosw;
+
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ res = acpi_evalf(vid_handle, NULL,
+ "ASWT", "vdd", status * 0x100, 0);
+ if (!autosw && video_autosw_set(autosw)) {
+ pr_err("video auto-switch left enabled due to error\n");
+ return -EIO;
+ }
+ break;
+ case TPACPI_VIDEO_NEW:
+ res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
+ acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return (res) ? 0 : -EIO;
+}
+
+static int video_autosw_get(void)
+{
+ int autosw = 0;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
+ return -EIO;
+ break;
+ case TPACPI_VIDEO_770:
+ case TPACPI_VIDEO_NEW:
+ if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
+ return -EIO;
+ break;
+ default:
+ return -ENOSYS;
+ }
+
+ return autosw & 1;
+}
+
+static int video_autosw_set(int enable)
+{
+ if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
+ return -EIO;
+ return 0;
+}
+
+static int video_outputsw_cycle(void)
+{
+ int autosw = video_autosw_get();
+ int res;
+
+ if (autosw < 0)
+ return autosw;
+
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
+ break;
+ case TPACPI_VIDEO_770:
+ case TPACPI_VIDEO_NEW:
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
+ break;
+ default:
+ return -ENOSYS;
+ }
+ if (!autosw && video_autosw_set(autosw)) {
+ pr_err("video auto-switch left enabled due to error\n");
+ return -EIO;
+ }
+
+ return (res) ? 0 : -EIO;
+}
+
+static int video_expand_toggle(void)
+{
+ switch (video_supported) {
+ case TPACPI_VIDEO_570:
+ return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
+ 0 : -EIO;
+ case TPACPI_VIDEO_770:
+ return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
+ 0 : -EIO;
+ case TPACPI_VIDEO_NEW:
+ return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
+ 0 : -EIO;
+ default:
+ return -ENOSYS;
+ }
+ /* not reached */
+}
+
+static int video_read(struct seq_file *m)
+{
+ int status, autosw;
+
+ if (video_supported == TPACPI_VIDEO_NONE) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ return 0;
+ }
+
+ /* Even reads can crash X.org, so... */
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ status = video_outputsw_get();
+ if (status < 0)
+ return status;
+
+ autosw = video_autosw_get();
+ if (autosw < 0)
+ return autosw;
+
+ seq_printf(m, "status:\t\tsupported\n");
+ seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
+ seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1)));
+ if (video_supported == TPACPI_VIDEO_NEW)
+ seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3)));
+ seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0)));
+ seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
+ seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
+ if (video_supported == TPACPI_VIDEO_NEW)
+ seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
+ seq_printf(m, "commands:\tauto_enable, auto_disable\n");
+ seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
+
+ return 0;
+}
+
+static int video_write(char *buf)
+{
+ char *cmd;
+ int enable, disable, status;
+ int res;
+
+ if (video_supported == TPACPI_VIDEO_NONE)
+ return -ENODEV;
+
+ /* Even reads can crash X.org, let alone writes... */
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ enable = 0;
+ disable = 0;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (strstarts(cmd, "lcd_enable")) {
+ enable |= TP_ACPI_VIDEO_S_LCD;
+ } else if (strstarts(cmd, "lcd_disable")) {
+ disable |= TP_ACPI_VIDEO_S_LCD;
+ } else if (strstarts(cmd, "crt_enable")) {
+ enable |= TP_ACPI_VIDEO_S_CRT;
+ } else if (strstarts(cmd, "crt_disable")) {
+ disable |= TP_ACPI_VIDEO_S_CRT;
+ } else if (video_supported == TPACPI_VIDEO_NEW &&
+ strstarts(cmd, "dvi_enable")) {
+ enable |= TP_ACPI_VIDEO_S_DVI;
+ } else if (video_supported == TPACPI_VIDEO_NEW &&
+ strstarts(cmd, "dvi_disable")) {
+ disable |= TP_ACPI_VIDEO_S_DVI;
+ } else if (strstarts(cmd, "auto_enable")) {
+ res = video_autosw_set(1);
+ if (res)
+ return res;
+ } else if (strstarts(cmd, "auto_disable")) {
+ res = video_autosw_set(0);
+ if (res)
+ return res;
+ } else if (strstarts(cmd, "video_switch")) {
+ res = video_outputsw_cycle();
+ if (res)
+ return res;
+ } else if (strstarts(cmd, "expand_toggle")) {
+ res = video_expand_toggle();
+ if (res)
+ return res;
+ } else
+ return -EINVAL;
+ }
+
+ if (enable || disable) {
+ status = video_outputsw_get();
+ if (status < 0)
+ return status;
+ res = video_outputsw_set((status & ~disable) | enable);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+static struct ibm_struct video_driver_data = {
+ .name = "video",
+ .read = video_read,
+ .write = video_write,
+ .exit = video_exit,
+};
+
+#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
+
+/*************************************************************************
+ * Keyboard backlight subdriver
+ */
+
+static enum led_brightness kbdlight_brightness;
+static DEFINE_MUTEX(kbdlight_mutex);
+
+static int kbdlight_set_level(int level)
+{
+ int ret = 0;
+
+ if (!hkey_handle)
+ return -ENXIO;
+
+ mutex_lock(&kbdlight_mutex);
+
+ if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
+ ret = -EIO;
+ else
+ kbdlight_brightness = level;
+
+ mutex_unlock(&kbdlight_mutex);
+
+ return ret;
+}
+
+static int kbdlight_get_level(void)
+{
+ int status = 0;
+
+ if (!hkey_handle)
+ return -ENXIO;
+
+ if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
+ return -EIO;
+
+ if (status < 0)
+ return status;
+
+ return status & 0x3;
+}
+
+static bool kbdlight_is_supported(void)
+{
+ int status = 0;
+
+ if (!hkey_handle)
+ return false;
+
+ if (!acpi_has_method(hkey_handle, "MLCG")) {
+ vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
+ return false;
+ }
+
+ if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
+ vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
+ return false;
+ }
+
+ if (status < 0) {
+ vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
+ return false;
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
+ /*
+ * Guessed test for keyboard backlight:
+ *
+ * Machines with backlight keyboard return:
+ * b010100000010000000XX - ThinkPad X1 Carbon 3rd
+ * b110100010010000000XX - ThinkPad x230
+ * b010100000010000000XX - ThinkPad x240
+ * b010100000010000000XX - ThinkPad W541
+ * (XX is current backlight level)
+ *
+ * Machines without backlight keyboard return:
+ * b10100001000000000000 - ThinkPad x230
+ * b10110001000000000000 - ThinkPad E430
+ * b00000000000000000000 - ThinkPad E450
+ *
+ * Candidate BITs for detection test (XOR):
+ * b01000000001000000000
+ * ^
+ */
+ return status & BIT(9);
+}
+
+static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ return kbdlight_set_level(brightness);
+}
+
+static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
+{
+ int level;
+
+ level = kbdlight_get_level();
+ if (level < 0)
+ return 0;
+
+ return level;
+}
+
+static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
+ .led_classdev = {
+ .name = "tpacpi::kbd_backlight",
+ .max_brightness = 2,
+ .flags = LED_BRIGHT_HW_CHANGED,
+ .brightness_set_blocking = &kbdlight_sysfs_set,
+ .brightness_get = &kbdlight_sysfs_get,
+ }
+};
+
+static int __init kbdlight_init(struct ibm_init_struct *iibm)
+{
+ int rc;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(hkey);
+
+ if (!kbdlight_is_supported()) {
+ tp_features.kbdlight = 0;
+ vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
+ return -ENODEV;
+ }
+
+ kbdlight_brightness = kbdlight_sysfs_get(NULL);
+ tp_features.kbdlight = 1;
+
+ rc = led_classdev_register(&tpacpi_pdev->dev,
+ &tpacpi_led_kbdlight.led_classdev);
+ if (rc < 0) {
+ tp_features.kbdlight = 0;
+ return rc;
+ }
+
+ tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
+ TP_ACPI_HKEY_KBD_LIGHT_MASK);
+ return 0;
+}
+
+static void kbdlight_exit(void)
+{
+ led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
+}
+
+static int kbdlight_set_level_and_update(int level)
+{
+ int ret;
+ struct led_classdev *led_cdev;
+
+ ret = kbdlight_set_level(level);
+ led_cdev = &tpacpi_led_kbdlight.led_classdev;
+
+ if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
+ led_cdev->brightness = level;
+
+ return ret;
+}
+
+static int kbdlight_read(struct seq_file *m)
+{
+ int level;
+
+ if (!tp_features.kbdlight) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ } else {
+ level = kbdlight_get_level();
+ if (level < 0)
+ seq_printf(m, "status:\t\terror %d\n", level);
+ else
+ seq_printf(m, "status:\t\t%d\n", level);
+ seq_printf(m, "commands:\t0, 1, 2\n");
+ }
+
+ return 0;
+}
+
+static int kbdlight_write(char *buf)
+{
+ char *cmd;
+ int res, level = -EINVAL;
+
+ if (!tp_features.kbdlight)
+ return -ENODEV;
+
+ while ((cmd = strsep(&buf, ","))) {
+ res = kstrtoint(cmd, 10, &level);
+ if (res < 0)
+ return res;
+ }
+
+ if (level >= 3 || level < 0)
+ return -EINVAL;
+
+ return kbdlight_set_level_and_update(level);
+}
+
+static void kbdlight_suspend(void)
+{
+ struct led_classdev *led_cdev;
+
+ if (!tp_features.kbdlight)
+ return;
+
+ led_cdev = &tpacpi_led_kbdlight.led_classdev;
+ led_update_brightness(led_cdev);
+ led_classdev_suspend(led_cdev);
+}
+
+static void kbdlight_resume(void)
+{
+ if (!tp_features.kbdlight)
+ return;
+
+ led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
+}
+
+static struct ibm_struct kbdlight_driver_data = {
+ .name = "kbdlight",
+ .read = kbdlight_read,
+ .write = kbdlight_write,
+ .suspend = kbdlight_suspend,
+ .resume = kbdlight_resume,
+ .exit = kbdlight_exit,
+};
+
+/*************************************************************************
+ * Light (thinklight) subdriver
+ */
+
+TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
+TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
+
+static int light_get_status(void)
+{
+ int status = 0;
+
+ if (tp_features.light_status) {
+ if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
+ return -EIO;
+ return (!!status);
+ }
+
+ return -ENXIO;
+}
+
+static int light_set_status(int status)
+{
+ int rc;
+
+ if (tp_features.light) {
+ if (cmos_handle) {
+ rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
+ (status) ?
+ TP_CMOS_THINKLIGHT_ON :
+ TP_CMOS_THINKLIGHT_OFF);
+ } else {
+ rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
+ (status) ? 1 : 0);
+ }
+ return (rc) ? 0 : -EIO;
+ }
+
+ return -ENXIO;
+}
+
+static int light_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ return light_set_status((brightness != LED_OFF) ?
+ TPACPI_LED_ON : TPACPI_LED_OFF);
+}
+
+static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
+{
+ return (light_get_status() == 1) ? LED_ON : LED_OFF;
+}
+
+static struct tpacpi_led_classdev tpacpi_led_thinklight = {
+ .led_classdev = {
+ .name = "tpacpi::thinklight",
+ .max_brightness = 1,
+ .brightness_set_blocking = &light_sysfs_set,
+ .brightness_get = &light_sysfs_get,
+ }
+};
+
+static int __init light_init(struct ibm_init_struct *iibm)
+{
+ int rc;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
+
+ if (tpacpi_is_ibm()) {
+ TPACPI_ACPIHANDLE_INIT(ledb);
+ TPACPI_ACPIHANDLE_INIT(lght);
+ }
+ TPACPI_ACPIHANDLE_INIT(cmos);
+
+ /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
+ tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
+
+ if (tp_features.light)
+ /* light status not supported on
+ 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
+ tp_features.light_status =
+ acpi_evalf(ec_handle, NULL, "KBLT", "qv");
+
+ vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
+ str_supported(tp_features.light),
+ str_supported(tp_features.light_status));
+
+ if (!tp_features.light)
+ return -ENODEV;
+
+ rc = led_classdev_register(&tpacpi_pdev->dev,
+ &tpacpi_led_thinklight.led_classdev);
+
+ if (rc < 0) {
+ tp_features.light = 0;
+ tp_features.light_status = 0;
+ } else {
+ rc = 0;
+ }
+
+ return rc;
+}
+
+static void light_exit(void)
+{
+ led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
+}
+
+static int light_read(struct seq_file *m)
+{
+ int status;
+
+ if (!tp_features.light) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ } else if (!tp_features.light_status) {
+ seq_printf(m, "status:\t\tunknown\n");
+ seq_printf(m, "commands:\ton, off\n");
+ } else {
+ status = light_get_status();
+ if (status < 0)
+ return status;
+ seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0)));
+ seq_printf(m, "commands:\ton, off\n");
+ }
+
+ return 0;
+}
+
+static int light_write(char *buf)
+{
+ char *cmd;
+ int newstatus = 0;
+
+ if (!tp_features.light)
+ return -ENODEV;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (strstarts(cmd, "on")) {
+ newstatus = 1;
+ } else if (strstarts(cmd, "off")) {
+ newstatus = 0;
+ } else
+ return -EINVAL;
+ }
+
+ return light_set_status(newstatus);
+}
+
+static struct ibm_struct light_driver_data = {
+ .name = "light",
+ .read = light_read,
+ .write = light_write,
+ .exit = light_exit,
+};
+
+/*************************************************************************
+ * CMOS subdriver
+ */
+
+/* sysfs cmos_command -------------------------------------------------- */
+static ssize_t cmos_command_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long cmos_cmd;
+ int res;
+
+ if (parse_strtoul(buf, 21, &cmos_cmd))
+ return -EINVAL;
+
+ res = issue_thinkpad_cmos_command(cmos_cmd);
+ return (res) ? res : count;
+}
+
+static DEVICE_ATTR_WO(cmos_command);
+
+static struct attribute *cmos_attributes[] = {
+ &dev_attr_cmos_command.attr,
+ NULL
+};
+
+static umode_t cmos_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return cmos_handle ? attr->mode : 0;
+}
+
+static const struct attribute_group cmos_attr_group = {
+ .is_visible = cmos_attr_is_visible,
+ .attrs = cmos_attributes,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int __init cmos_init(struct ibm_init_struct *iibm)
+{
+ vdbg_printk(TPACPI_DBG_INIT,
+ "initializing cmos commands subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(cmos);
+
+ vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
+ str_supported(cmos_handle != NULL));
+
+ return cmos_handle ? 0 : -ENODEV;
+}
+
+static int cmos_read(struct seq_file *m)
+{
+ /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
+ R30, R31, T20-22, X20-21 */
+ if (!cmos_handle)
+ seq_printf(m, "status:\t\tnot supported\n");
+ else {
+ seq_printf(m, "status:\t\tsupported\n");
+ seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
+ }
+
+ return 0;
+}
+
+static int cmos_write(char *buf)
+{
+ char *cmd;
+ int cmos_cmd, res;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
+ cmos_cmd >= 0 && cmos_cmd <= 21) {
+ /* cmos_cmd set */
+ } else
+ return -EINVAL;
+
+ res = issue_thinkpad_cmos_command(cmos_cmd);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+static struct ibm_struct cmos_driver_data = {
+ .name = "cmos",
+ .read = cmos_read,
+ .write = cmos_write,
+};
+
+/*************************************************************************
+ * LED subdriver
+ */
+
+enum led_access_mode {
+ TPACPI_LED_NONE = 0,
+ TPACPI_LED_570, /* 570 */
+ TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+ TPACPI_LED_NEW, /* all others */
+};
+
+enum { /* For TPACPI_LED_OLD */
+ TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
+ TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
+ TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
+};
+
+static enum led_access_mode led_supported;
+
+static acpi_handle led_handle;
+
+#define TPACPI_LED_NUMLEDS 16
+static struct tpacpi_led_classdev *tpacpi_leds;
+static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
+static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
+ /* there's a limit of 19 chars + NULL before 2.6.26 */
+ "tpacpi::power",
+ "tpacpi:orange:batt",
+ "tpacpi:green:batt",
+ "tpacpi::dock_active",
+ "tpacpi::bay_active",
+ "tpacpi::dock_batt",
+ "tpacpi::unknown_led",
+ "tpacpi::standby",
+ "tpacpi::dock_status1",
+ "tpacpi::dock_status2",
+ "tpacpi::lid_logo_dot",
+ "tpacpi::unknown_led3",
+ "tpacpi::thinkvantage",
+};
+#define TPACPI_SAFE_LEDS 0x1481U
+
+static inline bool tpacpi_is_led_restricted(const unsigned int led)
+{
+#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
+ return false;
+#else
+ return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
+#endif
+}
+
+static int led_get_status(const unsigned int led)
+{
+ int status;
+ enum led_status_t led_s;
+
+ switch (led_supported) {
+ case TPACPI_LED_570:
+ if (!acpi_evalf(ec_handle,
+ &status, "GLED", "dd", 1 << led))
+ return -EIO;
+ led_s = (status == 0) ?
+ TPACPI_LED_OFF :
+ ((status == 1) ?
+ TPACPI_LED_ON :
+ TPACPI_LED_BLINK);
+ tpacpi_led_state_cache[led] = led_s;
+ return led_s;
+ default:
+ return -ENXIO;
+ }
+
+ /* not reached */
+}
+
+static int led_set_status(const unsigned int led,
+ const enum led_status_t ledstatus)
+{
+ /* off, on, blink. Index is led_status_t */
+ static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
+ static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
+
+ int rc = 0;
+
+ switch (led_supported) {
+ case TPACPI_LED_570:
+ /* 570 */
+ if (unlikely(led > 7))
+ return -EINVAL;
+ if (unlikely(tpacpi_is_led_restricted(led)))
+ return -EPERM;
+ if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
+ (1 << led), led_sled_arg1[ledstatus]))
+ return -EIO;
+ break;
+ case TPACPI_LED_OLD:
+ /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
+ if (unlikely(led > 7))
+ return -EINVAL;
+ if (unlikely(tpacpi_is_led_restricted(led)))
+ return -EPERM;
+ rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
+ if (rc >= 0)
+ rc = ec_write(TPACPI_LED_EC_HLBL,
+ (ledstatus == TPACPI_LED_BLINK) << led);
+ if (rc >= 0)
+ rc = ec_write(TPACPI_LED_EC_HLCL,
+ (ledstatus != TPACPI_LED_OFF) << led);
+ break;
+ case TPACPI_LED_NEW:
+ /* all others */
+ if (unlikely(led >= TPACPI_LED_NUMLEDS))
+ return -EINVAL;
+ if (unlikely(tpacpi_is_led_restricted(led)))
+ return -EPERM;
+ if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
+ led, led_led_arg1[ledstatus]))
+ return -EIO;
+ break;
+ default:
+ return -ENXIO;
+ }
+
+ if (!rc)
+ tpacpi_led_state_cache[led] = ledstatus;
+
+ return rc;
+}
+
+static int led_sysfs_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct tpacpi_led_classdev *data = container_of(led_cdev,
+ struct tpacpi_led_classdev, led_classdev);
+ enum led_status_t new_state;
+
+ if (brightness == LED_OFF)
+ new_state = TPACPI_LED_OFF;
+ else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
+ new_state = TPACPI_LED_ON;
+ else
+ new_state = TPACPI_LED_BLINK;
+
+ return led_set_status(data->led, new_state);
+}
+
+static int led_sysfs_blink_set(struct led_classdev *led_cdev,
+ unsigned long *delay_on, unsigned long *delay_off)
+{
+ struct tpacpi_led_classdev *data = container_of(led_cdev,
+ struct tpacpi_led_classdev, led_classdev);
+
+ /* Can we choose the flash rate? */
+ if (*delay_on == 0 && *delay_off == 0) {
+ /* yes. set them to the hardware blink rate (1 Hz) */
+ *delay_on = 500; /* ms */
+ *delay_off = 500; /* ms */
+ } else if ((*delay_on != 500) || (*delay_off != 500))
+ return -EINVAL;
+
+ return led_set_status(data->led, TPACPI_LED_BLINK);
+}
+
+static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
+{
+ int rc;
+
+ struct tpacpi_led_classdev *data = container_of(led_cdev,
+ struct tpacpi_led_classdev, led_classdev);
+
+ rc = led_get_status(data->led);
+
+ if (rc == TPACPI_LED_OFF || rc < 0)
+ rc = LED_OFF; /* no error handling in led class :( */
+ else
+ rc = LED_FULL;
+
+ return rc;
+}
+
+static void led_exit(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < TPACPI_LED_NUMLEDS; i++)
+ led_classdev_unregister(&tpacpi_leds[i].led_classdev);
+
+ kfree(tpacpi_leds);
+}
+
+static int __init tpacpi_init_led(unsigned int led)
+{
+ /* LEDs with no name don't get registered */
+ if (!tpacpi_led_names[led])
+ return 0;
+
+ tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
+ tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
+ if (led_supported == TPACPI_LED_570)
+ tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get;
+
+ tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
+ tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN;
+ tpacpi_leds[led].led = led;
+
+ return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev);
+}
+
+static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
+ TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
+ TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
+ TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
+
+ TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
+ TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
+ TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
+ TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
+ TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
+ TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
+ TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
+ TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
+
+ TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
+ TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
+ TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
+ TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
+ TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
+
+ TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
+ TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
+ TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
+ TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
+
+ /* (1) - may have excess leds enabled on MSB */
+
+ /* Defaults (order matters, keep last, don't reorder!) */
+ { /* Lenovo */
+ .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = 0x1fffU,
+ },
+ { /* IBM ThinkPads with no EC version string */
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
+ .quirks = 0x00ffU,
+ },
+ { /* IBM ThinkPads with EC version string */
+ .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+ .quirks = 0x00bfU,
+ },
+};
+
+static enum led_access_mode __init led_init_detect_mode(void)
+{
+ acpi_status status;
+
+ if (tpacpi_is_ibm()) {
+ /* 570 */
+ status = acpi_get_handle(ec_handle, "SLED", &led_handle);
+ if (ACPI_SUCCESS(status))
+ return TPACPI_LED_570;
+
+ /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
+ status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
+ if (ACPI_SUCCESS(status))
+ return TPACPI_LED_OLD;
+ }
+
+ /* most others */
+ status = acpi_get_handle(ec_handle, "LED", &led_handle);
+ if (ACPI_SUCCESS(status))
+ return TPACPI_LED_NEW;
+
+ /* R30, R31, and unknown firmwares */
+ led_handle = NULL;
+ return TPACPI_LED_NONE;
+}
+
+static int __init led_init(struct ibm_init_struct *iibm)
+{
+ unsigned int i;
+ int rc;
+ unsigned long useful_leds;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
+
+ led_supported = led_init_detect_mode();
+
+ if (led_supported != TPACPI_LED_NONE) {
+ useful_leds = tpacpi_check_quirks(led_useful_qtable,
+ ARRAY_SIZE(led_useful_qtable));
+
+ if (!useful_leds) {
+ led_handle = NULL;
+ led_supported = TPACPI_LED_NONE;
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
+ str_supported(led_supported), led_supported);
+
+ if (led_supported == TPACPI_LED_NONE)
+ return -ENODEV;
+
+ tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
+ GFP_KERNEL);
+ if (!tpacpi_leds) {
+ pr_err("Out of memory for LED data\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
+ tpacpi_leds[i].led = -1;
+
+ if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) {
+ rc = tpacpi_init_led(i);
+ if (rc < 0) {
+ led_exit();
+ return rc;
+ }
+ }
+ }
+
+#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
+ pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
+#endif
+ return 0;
+}
+
+#define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s))
+
+static int led_read(struct seq_file *m)
+{
+ if (!led_supported) {
+ seq_printf(m, "status:\t\tnot supported\n");
+ return 0;
+ }
+ seq_printf(m, "status:\t\tsupported\n");
+
+ if (led_supported == TPACPI_LED_570) {
+ /* 570 */
+ int i, status;
+ for (i = 0; i < 8; i++) {
+ status = led_get_status(i);
+ if (status < 0)
+ return -EIO;
+ seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status));
+ }
+ }
+
+ seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
+
+ return 0;
+}
+
+static int led_write(char *buf)
+{
+ char *cmd;
+ int led, rc;
+ enum led_status_t s;
+
+ if (!led_supported)
+ return -ENODEV;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (sscanf(cmd, "%d", &led) != 1)
+ return -EINVAL;
+
+ if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1))
+ return -ENODEV;
+
+ if (tpacpi_leds[led].led < 0)
+ return -ENODEV;
+
+ if (strstr(cmd, "off")) {
+ s = TPACPI_LED_OFF;
+ } else if (strstr(cmd, "on")) {
+ s = TPACPI_LED_ON;
+ } else if (strstr(cmd, "blink")) {
+ s = TPACPI_LED_BLINK;
+ } else {
+ return -EINVAL;
+ }
+
+ rc = led_set_status(led, s);
+ if (rc < 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+static struct ibm_struct led_driver_data = {
+ .name = "led",
+ .read = led_read,
+ .write = led_write,
+ .exit = led_exit,
+};
+
+/*************************************************************************
+ * Beep subdriver
+ */
+
+TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
+
+#define TPACPI_BEEP_Q1 0x0001
+
+static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
+ TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
+ TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
+};
+
+static int __init beep_init(struct ibm_init_struct *iibm)
+{
+ unsigned long quirks;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
+
+ TPACPI_ACPIHANDLE_INIT(beep);
+
+ vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
+ str_supported(beep_handle != NULL));
+
+ quirks = tpacpi_check_quirks(beep_quirk_table,
+ ARRAY_SIZE(beep_quirk_table));
+
+ tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
+
+ return (beep_handle) ? 0 : -ENODEV;
+}
+
+static int beep_read(struct seq_file *m)
+{
+ if (!beep_handle)
+ seq_printf(m, "status:\t\tnot supported\n");
+ else {
+ seq_printf(m, "status:\t\tsupported\n");
+ seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
+ }
+
+ return 0;
+}
+
+static int beep_write(char *buf)
+{
+ char *cmd;
+ int beep_cmd;
+
+ if (!beep_handle)
+ return -ENODEV;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
+ beep_cmd >= 0 && beep_cmd <= 17) {
+ /* beep_cmd set */
+ } else
+ return -EINVAL;
+ if (tp_features.beep_needs_two_args) {
+ if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
+ beep_cmd, 0))
+ return -EIO;
+ } else {
+ if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
+ beep_cmd))
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static struct ibm_struct beep_driver_data = {
+ .name = "beep",
+ .read = beep_read,
+ .write = beep_write,
+};
+
+/*************************************************************************
+ * Thermal subdriver
+ */
+
+enum thermal_access_mode {
+ TPACPI_THERMAL_NONE = 0, /* No thermal support */
+ TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
+ TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
+ TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
+ TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */
+ TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
+};
+
+enum { /* TPACPI_THERMAL_TPEC_* */
+ TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
+ TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
+ TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */
+ TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */
+ TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
+ TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
+
+ TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
+};
+
+
+#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
+struct ibm_thermal_sensors_struct {
+ s32 temp[TPACPI_MAX_THERMAL_SENSORS];
+};
+
+static const struct tpacpi_quirk thermal_quirk_table[] __initconst = {
+ /* Non-standard address for thermal registers on some ThinkPads */
+ TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */
+ TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/
+ TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */
+ TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/
+ TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */
+ TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/
+ TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/
+ TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/
+ TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/
+};
+
+static enum thermal_access_mode thermal_read_mode;
+static bool thermal_use_labels;
+static bool thermal_with_ns_address; /* Non-standard thermal reg address */
+
+/* Function to check thermal read mode */
+static enum thermal_access_mode __init thermal_read_mode_check(void)
+{
+ u8 t, ta1, ta2, ver = 0;
+ int i;
+ int acpi_tmp7;
+
+ acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
+
+ if (thinkpad_id.ec_model) {
+ /*
+ * Direct EC access mode: sensors at registers 0x78-0x7F,
+ * 0xC0-0xC7. Registers return 0x00 for non-implemented,
+ * thermal sensors return 0x80 when not available.
+ *
+ * In some special cases (when Power Supply ID is 0xC2)
+ * above rule causes thermal control issues. Offset 0xEF
+ * determines EC version. 0xC0-0xC7 are not thermal registers
+ * in Ver 3.
+ */
+ if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
+ pr_warn("Thinkpad ACPI EC unable to access EC version\n");
+
+ /* Quirks to check non-standard EC */
+ thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table,
+ ARRAY_SIZE(thermal_quirk_table));
+
+ /* Support for Thinkpads with non-standard address */
+ if (thermal_with_ns_address) {
+ pr_info("ECFW with non-standard thermal registers found\n");
+ return TPACPI_THERMAL_TPEC_12;
+ }
+
+ ta1 = ta2 = 0;
+ for (i = 0; i < 8; i++) {
+ if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
+ ta1 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ if (ver < 3) {
+ if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
+ ta2 |= t;
+ } else {
+ ta1 = 0;
+ break;
+ }
+ }
+ }
+
+ if (ta1 == 0) {
+ /* This is sheer paranoia, but we handle it anyway */
+ if (acpi_tmp7) {
+ pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
+ return TPACPI_THERMAL_ACPI_TMP07;
+ }
+ pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
+ return TPACPI_THERMAL_NONE;
+ }
+
+ if (ver >= 3) {
+ thermal_use_labels = true;
+ return TPACPI_THERMAL_TPEC_8;
+ }
+
+ return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
+ }
+
+ if (acpi_tmp7) {
+ if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
+ /* 600e/x, 770e, 770x */
+ return TPACPI_THERMAL_ACPI_UPDT;
+ }
+ /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
+ return TPACPI_THERMAL_ACPI_TMP07;
+ }
+
+ /* temperatures not supported on 570, G4x, R30, R31, R32 */
+ return TPACPI_THERMAL_NONE;
+}
+
+/* idx is zero-based */
+static int thermal_get_sensor(int idx, s32 *value)
+{
+ int t;
+ s8 tmp;
+ char tmpi[5];
+
+ t = TP_EC_THERMAL_TMP0;
+
+ switch (thermal_read_mode) {
+#if TPACPI_MAX_THERMAL_SENSORS >= 16
+ case TPACPI_THERMAL_TPEC_16:
+ if (idx >= 8 && idx <= 15) {
+ t = TP_EC_THERMAL_TMP8;
+ idx -= 8;
+ }
+#endif
+ fallthrough;
+ case TPACPI_THERMAL_TPEC_8:
+ if (idx <= 7) {
+ if (!acpi_ec_read(t + idx, &tmp))
+ return -EIO;
+ *value = tmp * 1000;
+ return 0;
+ }
+ break;
+
+ /* The Non-standard EC uses 12 Thermal areas */
+ case TPACPI_THERMAL_TPEC_12:
+ if (idx >= 12)
+ return -EINVAL;
+
+ t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx :
+ TP_EC_THERMAL_TMP8_NS + (idx - 8);
+
+ if (!acpi_ec_read(t, &tmp))
+ return -EIO;
+
+ *value = tmp * MILLIDEGREE_PER_DEGREE;
+ return 0;
+
+ case TPACPI_THERMAL_ACPI_UPDT:
+ if (idx <= 7) {
+ snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
+ if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
+ return -EIO;
+ if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+ return -EIO;
+ *value = (t - 2732) * 100;
+ return 0;
+ }
+ break;
+
+ case TPACPI_THERMAL_ACPI_TMP07:
+ if (idx <= 7) {
+ snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
+ if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
+ return -EIO;
+ if (t > 127 || t < -127)
+ t = TP_EC_THERMAL_TMP_NA;
+ *value = t * 1000;
+ return 0;
+ }
+ break;
+
+ case TPACPI_THERMAL_NONE:
+ default:
+ return -ENOSYS;
+ }
+
+ return -EINVAL;
+}
+
+static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
+{
+ int res, i, n;
+
+ if (!s)
+ return -EINVAL;
+
+ if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
+ n = 16;
+ else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12)
+ n = 12;
+ else
+ n = 8;
+
+ for (i = 0 ; i < n; i++) {
+ res = thermal_get_sensor(i, &s->temp[i]);
+ if (res)
+ return res;
+ }
+
+ return n;
+}
+
+static void thermal_dump_all_sensors(void)
+{
+ int n, i;
+ struct ibm_thermal_sensors_struct t;
+
+ n = thermal_get_sensors(&t);
+ if (n <= 0)
+ return;
+
+ pr_notice("temperatures (Celsius):");
+
+ for (i = 0; i < n; i++) {
+ if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
+ pr_cont(" %d", (int)(t.temp[i] / 1000));
+ else
+ pr_cont(" N/A");
+ }
+
+ pr_cont("\n");
+}
+
+/* sysfs temp##_input -------------------------------------------------- */
+
+static ssize_t thermal_temp_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(attr);
+ int idx = sensor_attr->index;
+ s32 value;
+ int res;
+
+ res = thermal_get_sensor(idx, &value);
+ if (res)
+ return res;
+ if (value == TPACPI_THERMAL_SENSOR_NA)
+ return -ENXIO;
+
+ return sysfs_emit(buf, "%d\n", value);
+}
+
+#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
+ SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
+ thermal_temp_input_show, NULL, _idxB)
+
+static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
+ THERMAL_SENSOR_ATTR_TEMP(1, 0),
+ THERMAL_SENSOR_ATTR_TEMP(2, 1),
+ THERMAL_SENSOR_ATTR_TEMP(3, 2),
+ THERMAL_SENSOR_ATTR_TEMP(4, 3),
+ THERMAL_SENSOR_ATTR_TEMP(5, 4),
+ THERMAL_SENSOR_ATTR_TEMP(6, 5),
+ THERMAL_SENSOR_ATTR_TEMP(7, 6),
+ THERMAL_SENSOR_ATTR_TEMP(8, 7),
+ THERMAL_SENSOR_ATTR_TEMP(9, 8),
+ THERMAL_SENSOR_ATTR_TEMP(10, 9),
+ THERMAL_SENSOR_ATTR_TEMP(11, 10),
+ THERMAL_SENSOR_ATTR_TEMP(12, 11),
+ THERMAL_SENSOR_ATTR_TEMP(13, 12),
+ THERMAL_SENSOR_ATTR_TEMP(14, 13),
+ THERMAL_SENSOR_ATTR_TEMP(15, 14),
+ THERMAL_SENSOR_ATTR_TEMP(16, 15),
+};
+
+#define THERMAL_ATTRS(X) \
+ &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
+
+static struct attribute *thermal_temp_input_attr[] = {
+ THERMAL_ATTRS(0),
+ THERMAL_ATTRS(1),
+ THERMAL_ATTRS(2),
+ THERMAL_ATTRS(3),
+ THERMAL_ATTRS(4),
+ THERMAL_ATTRS(5),
+ THERMAL_ATTRS(6),
+ THERMAL_ATTRS(7),
+ THERMAL_ATTRS(8),
+ THERMAL_ATTRS(9),
+ THERMAL_ATTRS(10),
+ THERMAL_ATTRS(11),
+ THERMAL_ATTRS(12),
+ THERMAL_ATTRS(13),
+ THERMAL_ATTRS(14),
+ THERMAL_ATTRS(15),
+ NULL
+};
+
+#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
+
+static umode_t thermal_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct device_attribute *dev_attr = to_dev_attr(attr);
+ struct sensor_device_attribute *sensor_attr =
+ to_sensor_dev_attr(dev_attr);
+
+ int idx = sensor_attr->index;
+
+ switch (thermal_read_mode) {
+ case TPACPI_THERMAL_NONE:
+ return 0;
+
+ case TPACPI_THERMAL_ACPI_TMP07:
+ case TPACPI_THERMAL_ACPI_UPDT:
+ case TPACPI_THERMAL_TPEC_8:
+ if (idx >= 8)
+ return 0;
+ break;
+
+ case TPACPI_THERMAL_TPEC_12:
+ if (idx >= 12)
+ return 0;
+ break;
+
+ default:
+ break;
+
+ }
+
+ return attr->mode;
+}
+
+static const struct attribute_group thermal_attr_group = {
+ .is_visible = thermal_attr_is_visible,
+ .attrs = thermal_temp_input_attr,
+};
+
+#undef THERMAL_SENSOR_ATTR_TEMP
+#undef THERMAL_ATTRS
+
+static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return sysfs_emit(buf, "CPU\n");
+}
+static DEVICE_ATTR_RO(temp1_label);
+
+static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return sysfs_emit(buf, "GPU\n");
+}
+static DEVICE_ATTR_RO(temp2_label);
+
+static struct attribute *temp_label_attributes[] = {
+ &dev_attr_temp1_label.attr,
+ &dev_attr_temp2_label.attr,
+ NULL
+};
+
+static umode_t temp_label_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return thermal_use_labels ? attr->mode : 0;
+}
+
+static const struct attribute_group temp_label_attr_group = {
+ .is_visible = temp_label_attr_is_visible,
+ .attrs = temp_label_attributes,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int __init thermal_init(struct ibm_init_struct *iibm)
+{
+ vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
+
+ thermal_read_mode = thermal_read_mode_check();
+
+ vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
+ str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
+ thermal_read_mode);
+
+ return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV;
+}
+
+static int thermal_read(struct seq_file *m)
+{
+ int n, i;
+ struct ibm_thermal_sensors_struct t;
+
+ n = thermal_get_sensors(&t);
+ if (unlikely(n < 0))
+ return n;
+
+ seq_printf(m, "temperatures:\t");
+
+ if (n > 0) {
+ for (i = 0; i < (n - 1); i++)
+ seq_printf(m, "%d ", t.temp[i] / 1000);
+ seq_printf(m, "%d\n", t.temp[i] / 1000);
+ } else
+ seq_printf(m, "not supported\n");
+
+ return 0;
+}
+
+static struct ibm_struct thermal_driver_data = {
+ .name = "thermal",
+ .read = thermal_read,
+};
+
+/*************************************************************************
+ * Backlight/brightness subdriver
+ */
+
+#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
+
+/*
+ * ThinkPads can read brightness from two places: EC HBRV (0x31), or
+ * CMOS NVRAM byte 0x5E, bits 0-3.
+ *
+ * EC HBRV (0x31) has the following layout
+ * Bit 7: unknown function
+ * Bit 6: unknown function
+ * Bit 5: Z: honour scale changes, NZ: ignore scale changes
+ * Bit 4: must be set to zero to avoid problems
+ * Bit 3-0: backlight brightness level
+ *
+ * brightness_get_raw returns status data in the HBRV layout
+ *
+ * WARNING: The X61 has been verified to use HBRV for something else, so
+ * this should be used _only_ on IBM ThinkPads, and maybe with some careful
+ * testing on the very early *60 Lenovo models...
+ */
+
+enum {
+ TP_EC_BACKLIGHT = 0x31,
+
+ /* TP_EC_BACKLIGHT bitmasks */
+ TP_EC_BACKLIGHT_LVLMSK = 0x1F,
+ TP_EC_BACKLIGHT_CMDMSK = 0xE0,
+ TP_EC_BACKLIGHT_MAPSW = 0x20,
+};
+
+enum tpacpi_brightness_access_mode {
+ TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
+ TPACPI_BRGHT_MODE_EC, /* EC control */
+ TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
+ TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
+ TPACPI_BRGHT_MODE_MAX
+};
+
+static struct backlight_device *ibm_backlight_device;
+
+static enum tpacpi_brightness_access_mode brightness_mode =
+ TPACPI_BRGHT_MODE_MAX;
+
+static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
+
+static struct mutex brightness_mutex;
+
+/* NVRAM brightness access */
+static unsigned int tpacpi_brightness_nvram_get(void)
+{
+ u8 lnvram;
+
+ lockdep_assert_held(&brightness_mutex);
+
+ lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
+ & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+ >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
+ lnvram &= bright_maxlvl;
+
+ return lnvram;
+}
+
+static void tpacpi_brightness_checkpoint_nvram(void)
+{
+ u8 lec = 0;
+ u8 b_nvram;
+
+ if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
+ return;
+
+ vdbg_printk(TPACPI_DBG_BRGHT,
+ "trying to checkpoint backlight level to NVRAM...\n");
+
+ if (mutex_lock_killable(&brightness_mutex) < 0)
+ return;
+
+ if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
+ goto unlock;
+ lec &= TP_EC_BACKLIGHT_LVLMSK;
+ b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
+
+ if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
+ >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
+ /* NVRAM needs update */
+ b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
+ TP_NVRAM_POS_LEVEL_BRIGHTNESS);
+ b_nvram |= lec;
+ nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
+ dbg_printk(TPACPI_DBG_BRGHT,
+ "updated NVRAM backlight level to %u (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+ } else
+ vdbg_printk(TPACPI_DBG_BRGHT,
+ "NVRAM backlight level already is %u (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+
+unlock:
+ mutex_unlock(&brightness_mutex);
+}
+
+
+static int tpacpi_brightness_get_raw(int *status)
+{
+ u8 lec = 0;
+
+ lockdep_assert_held(&brightness_mutex);
+
+ switch (brightness_mode) {
+ case TPACPI_BRGHT_MODE_UCMS_STEP:
+ *status = tpacpi_brightness_nvram_get();
+ return 0;
+ case TPACPI_BRGHT_MODE_EC:
+ case TPACPI_BRGHT_MODE_ECNVRAM:
+ if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
+ return -EIO;
+ *status = lec;
+ return 0;
+ default:
+ return -ENXIO;
+ }
+}
+
+/* do NOT call with illegal backlight level value */
+static int tpacpi_brightness_set_ec(unsigned int value)
+{
+ u8 lec = 0;
+
+ lockdep_assert_held(&brightness_mutex);
+
+ if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
+ return -EIO;
+
+ if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
+ (lec & TP_EC_BACKLIGHT_CMDMSK) |
+ (value & TP_EC_BACKLIGHT_LVLMSK))))
+ return -EIO;
+
+ return 0;
+}
+
+static int tpacpi_brightness_set_ucmsstep(unsigned int value)
+{
+ int cmos_cmd, inc;
+ unsigned int current_value, i;
+
+ lockdep_assert_held(&brightness_mutex);
+
+ current_value = tpacpi_brightness_nvram_get();
+
+ if (value == current_value)
+ return 0;
+
+ cmos_cmd = (value > current_value) ?
+ TP_CMOS_BRIGHTNESS_UP :
+ TP_CMOS_BRIGHTNESS_DOWN;
+ inc = (value > current_value) ? 1 : -1;
+
+ for (i = current_value; i != value; i += inc)
+ if (issue_thinkpad_cmos_command(cmos_cmd))
+ return -EIO;
+
+ return 0;
+}
+
+/* May return EINTR which can always be mapped to ERESTARTSYS */
+static int brightness_set(unsigned int value)
+{
+ int res;
+
+ if (value > bright_maxlvl)
+ return -EINVAL;
+
+ vdbg_printk(TPACPI_DBG_BRGHT,
+ "set backlight level to %d\n", value);
+
+ res = mutex_lock_killable(&brightness_mutex);
+ if (res < 0)
+ return res;
+
+ switch (brightness_mode) {
+ case TPACPI_BRGHT_MODE_EC:
+ case TPACPI_BRGHT_MODE_ECNVRAM:
+ res = tpacpi_brightness_set_ec(value);
+ break;
+ case TPACPI_BRGHT_MODE_UCMS_STEP:
+ res = tpacpi_brightness_set_ucmsstep(value);
+ break;
+ default:
+ res = -ENXIO;
+ }
+
+ mutex_unlock(&brightness_mutex);
+ return res;
+}
+
+/* sysfs backlight class ----------------------------------------------- */
+
+static int brightness_update_status(struct backlight_device *bd)
+{
+ int level = backlight_get_brightness(bd);
+
+ dbg_printk(TPACPI_DBG_BRGHT,
+ "backlight: attempt to set level to %d\n",
+ level);
+
+ /* it is the backlight class's job (caller) to handle
+ * EINTR and other errors properly */
+ return brightness_set(level);
+}
+
+static int brightness_get(struct backlight_device *bd)
+{
+ int status, res;
+
+ res = mutex_lock_killable(&brightness_mutex);
+ if (res < 0)
+ return 0;
+
+ res = tpacpi_brightness_get_raw(&status);
+
+ mutex_unlock(&brightness_mutex);
+
+ if (res < 0)
+ return 0;
+
+ return status & TP_EC_BACKLIGHT_LVLMSK;
+}
+
+static void tpacpi_brightness_notify_change(void)
+{
+ backlight_force_update(ibm_backlight_device,
+ BACKLIGHT_UPDATE_HOTKEY);
+}
+
+static const struct backlight_ops ibm_backlight_data = {
+ .get_brightness = brightness_get,
+ .update_status = brightness_update_status,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+ int rc;
+
+ status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer);
+ if (ACPI_FAILURE(status))
+ return 0;
+
+ obj = buffer.pointer;
+ if (!obj || obj->type != ACPI_TYPE_PACKAGE) {
+ acpi_handle_info(adev->handle,
+ "Unknown _BCL data, please report this to %s\n",
+ TPACPI_MAIL);
+ rc = 0;
+ } else {
+ rc = obj->package.count;
+ }
+ kfree(obj);
+
+ return rc;
+}
+
+/*
+ * Call _BCL method of video device. On some ThinkPads this will
+ * switch the firmware to the ACPI brightness control mode.
+ */
+
+static int __init tpacpi_query_bcl_levels(acpi_handle handle)
+{
+ struct acpi_device *device;
+
+ device = acpi_fetch_acpi_dev(handle);
+ if (!device)
+ return 0;
+
+ return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL);
+}
+
+
+/*
+ * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
+ */
+static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
+{
+ acpi_handle video_device;
+ int bcl_levels = 0;
+
+ tpacpi_acpi_handle_locate("video", NULL, &video_device);
+ if (video_device)
+ bcl_levels = tpacpi_query_bcl_levels(video_device);
+
+ tp_features.bright_acpimode = (bcl_levels > 0);
+
+ return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
+}
+
+/*
+ * These are only useful for models that have only one possibility
+ * of GPU. If the BIOS model handles both ATI and Intel, don't use
+ * these quirks.
+ */
+#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
+#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
+#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
+
+static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
+ /* Models with ATI GPUs known to require ECNVRAM mode */
+ TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
+
+ /* Models with ATI GPUs that can use ECNVRAM */
+ TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
+ TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+ TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
+ TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+
+ /* Models with Intel Extreme Graphics 2 */
+ TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
+ TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+ TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
+
+ /* Models with Intel GMA900 */
+ TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
+ TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
+ TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
+};
+
+/*
+ * Returns < 0 for error, otherwise sets tp_features.bright_*
+ * and bright_maxlvl.
+ */
+static void __init tpacpi_detect_brightness_capabilities(void)
+{
+ unsigned int b;
+
+ vdbg_printk(TPACPI_DBG_INIT,
+ "detecting firmware brightness interface capabilities\n");
+
+ /* we could run a quirks check here (same table used by
+ * brightness_init) if needed */
+
+ /*
+ * We always attempt to detect acpi support, so as to switch
+ * Lenovo Vista BIOS to ACPI brightness mode even if we are not
+ * going to publish a backlight interface
+ */
+ b = tpacpi_check_std_acpi_brightness_support();
+ switch (b) {
+ case 16:
+ bright_maxlvl = 15;
+ break;
+ case 8:
+ case 0:
+ bright_maxlvl = 7;
+ break;
+ default:
+ tp_features.bright_unkfw = 1;
+ bright_maxlvl = b - 1;
+ }
+ pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
+}
+
+static int __init brightness_init(struct ibm_init_struct *iibm)
+{
+ struct backlight_properties props;
+ int b;
+ unsigned long quirks;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
+
+ mutex_init(&brightness_mutex);
+
+ quirks = tpacpi_check_quirks(brightness_quirk_table,
+ ARRAY_SIZE(brightness_quirk_table));
+
+ /* tpacpi_detect_brightness_capabilities() must have run already */
+
+ /* if it is unknown, we don't handle it: it wouldn't be safe */
+ if (tp_features.bright_unkfw)
+ return -ENODEV;
+
+ if (!brightness_enable) {
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
+ "brightness support disabled by module parameter\n");
+ return -ENODEV;
+ }
+
+ if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
+ if (brightness_enable > 1) {
+ pr_info("Standard ACPI backlight interface available, not loading native one\n");
+ return -ENODEV;
+ } else if (brightness_enable == 1) {
+ pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
+ return -ENODEV;
+ }
+ } else if (!tp_features.bright_acpimode) {
+ pr_notice("ACPI backlight interface not available\n");
+ return -ENODEV;
+ }
+
+ pr_notice("ACPI native brightness control enabled\n");
+
+ /*
+ * Check for module parameter bogosity, note that we
+ * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
+ * able to detect "unspecified"
+ */
+ if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
+ return -EINVAL;
+
+ /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
+ if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
+ brightness_mode == TPACPI_BRGHT_MODE_MAX) {
+ if (quirks & TPACPI_BRGHT_Q_EC)
+ brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
+ else
+ brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
+
+ dbg_printk(TPACPI_DBG_BRGHT,
+ "driver auto-selected brightness_mode=%d\n",
+ brightness_mode);
+ }
+
+ /* Safety */
+ if (!tpacpi_is_ibm() &&
+ (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
+ brightness_mode == TPACPI_BRGHT_MODE_EC))
+ return -EINVAL;
+
+ if (tpacpi_brightness_get_raw(&b) < 0)
+ return -ENODEV;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = bright_maxlvl;
+ props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
+ ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
+ NULL, NULL,
+ &ibm_backlight_data,
+ &props);
+ if (IS_ERR(ibm_backlight_device)) {
+ int rc = PTR_ERR(ibm_backlight_device);
+ ibm_backlight_device = NULL;
+ pr_err("Could not register backlight device\n");
+ return rc;
+ }
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
+ "brightness is supported\n");
+
+ if (quirks & TPACPI_BRGHT_Q_ASK) {
+ pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
+ brightness_mode);
+ pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
+ TPACPI_MAIL);
+ }
+
+ /* Added by mistake in early 2007. Probably useless, but it could
+ * be working around some unknown firmware problem where the value
+ * read at startup doesn't match the real hardware state... so leave
+ * it in place just in case */
+ backlight_update_status(ibm_backlight_device);
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
+ "brightness: registering brightness hotkeys as change notification\n");
+ tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
+ | TP_ACPI_HKEY_BRGHTUP_MASK
+ | TP_ACPI_HKEY_BRGHTDWN_MASK);
+ return 0;
+}
+
+static void brightness_suspend(void)
+{
+ tpacpi_brightness_checkpoint_nvram();
+}
+
+static void brightness_shutdown(void)
+{
+ tpacpi_brightness_checkpoint_nvram();
+}
+
+static void brightness_exit(void)
+{
+ if (ibm_backlight_device) {
+ vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
+ "calling backlight_device_unregister()\n");
+ backlight_device_unregister(ibm_backlight_device);
+ }
+
+ tpacpi_brightness_checkpoint_nvram();
+}
+
+static int brightness_read(struct seq_file *m)
+{
+ int level;
+
+ level = brightness_get(NULL);
+ if (level < 0) {
+ seq_printf(m, "level:\t\tunreadable\n");
+ } else {
+ seq_printf(m, "level:\t\t%d\n", level);
+ seq_printf(m, "commands:\tup, down\n");
+ seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
+ bright_maxlvl);
+ }
+
+ return 0;
+}
+
+static int brightness_write(char *buf)
+{
+ int level;
+ int rc;
+ char *cmd;
+
+ level = brightness_get(NULL);
+ if (level < 0)
+ return level;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (strstarts(cmd, "up")) {
+ if (level < bright_maxlvl)
+ level++;
+ } else if (strstarts(cmd, "down")) {
+ if (level > 0)
+ level--;
+ } else if (sscanf(cmd, "level %d", &level) == 1 &&
+ level >= 0 && level <= bright_maxlvl) {
+ /* new level set */
+ } else
+ return -EINVAL;
+ }
+
+ tpacpi_disclose_usertask("procfs brightness",
+ "set level to %d\n", level);
+
+ /*
+ * Now we know what the final level should be, so we try to set it.
+ * Doing it this way makes the syscall restartable in case of EINTR
+ */
+ rc = brightness_set(level);
+ if (!rc && ibm_backlight_device)
+ backlight_force_update(ibm_backlight_device,
+ BACKLIGHT_UPDATE_SYSFS);
+ return (rc == -EINTR) ? -ERESTARTSYS : rc;
+}
+
+static struct ibm_struct brightness_driver_data = {
+ .name = "brightness",
+ .read = brightness_read,
+ .write = brightness_write,
+ .exit = brightness_exit,
+ .suspend = brightness_suspend,
+ .shutdown = brightness_shutdown,
+};
+
+/*************************************************************************
+ * Volume subdriver
+ */
+
+/*
+ * IBM ThinkPads have a simple volume controller with MUTE gating.
+ * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
+ *
+ * Since the *61 series (and probably also the later *60 series), Lenovo
+ * ThinkPads only implement the MUTE gate.
+ *
+ * EC register 0x30
+ * Bit 6: MUTE (1 mutes sound)
+ * Bit 3-0: Volume
+ * Other bits should be zero as far as we know.
+ *
+ * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
+ * bits 3-0 (volume). Other bits in NVRAM may have other functions,
+ * such as bit 7 which is used to detect repeated presses of MUTE,
+ * and we leave them unchanged.
+ *
+ * On newer Lenovo ThinkPads, the EC can automatically change the volume
+ * in response to user input. Unfortunately, this rarely works well.
+ * The laptop changes the state of its internal MUTE gate and, on some
+ * models, sends KEY_MUTE, causing any user code that responds to the
+ * mute button to get confused. The hardware MUTE gate is also
+ * unnecessary, since user code can handle the mute button without
+ * kernel or EC help.
+ *
+ * To avoid confusing userspace, we simply disable all EC-based mute
+ * and volume controls when possible.
+ */
+
+#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
+
+#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
+#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
+#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
+
+#if SNDRV_CARDS <= 32
+#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
+#else
+#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
+#endif
+static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
+static char *alsa_id = "ThinkPadEC";
+static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
+
+struct tpacpi_alsa_data {
+ struct snd_card *card;
+ struct snd_ctl_elem_id *ctl_mute_id;
+ struct snd_ctl_elem_id *ctl_vol_id;
+};
+
+static struct snd_card *alsa_card;
+
+enum {
+ TP_EC_AUDIO = 0x30,
+
+ /* TP_EC_AUDIO bits */
+ TP_EC_AUDIO_MUTESW = 6,
+
+ /* TP_EC_AUDIO bitmasks */
+ TP_EC_AUDIO_LVL_MSK = 0x0F,
+ TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
+
+ /* Maximum volume */
+ TP_EC_VOLUME_MAX = 14,
+};
+
+enum tpacpi_volume_access_mode {
+ TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
+ TPACPI_VOL_MODE_EC, /* Pure EC control */
+ TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
+ TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
+ TPACPI_VOL_MODE_MAX
+};
+
+enum tpacpi_volume_capabilities {
+ TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
+ TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
+ TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
+ TPACPI_VOL_CAP_MAX
+};
+
+enum tpacpi_mute_btn_mode {
+ TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
+ /* We don't know what mode 1 is. */
+ TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
+ TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
+};
+
+static enum tpacpi_volume_access_mode volume_mode =
+ TPACPI_VOL_MODE_MAX;
+
+static enum tpacpi_volume_capabilities volume_capabilities;
+static bool volume_control_allowed;
+static bool software_mute_requested = true;
+static bool software_mute_active;
+static int software_mute_orig_mode;
+
+/*
+ * Used to syncronize writers to TP_EC_AUDIO and
+ * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
+ */
+static struct mutex volume_mutex;
+
+static void tpacpi_volume_checkpoint_nvram(void)
+{
+ u8 lec = 0;
+ u8 b_nvram;
+ u8 ec_mask;
+
+ if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
+ return;
+ if (!volume_control_allowed)
+ return;
+ if (software_mute_active)
+ return;
+
+ vdbg_printk(TPACPI_DBG_MIXER,
+ "trying to checkpoint mixer state to NVRAM...\n");
+
+ if (tp_features.mixer_no_level_control)
+ ec_mask = TP_EC_AUDIO_MUTESW_MSK;
+ else
+ ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
+
+ if (mutex_lock_killable(&volume_mutex) < 0)
+ return;
+
+ if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
+ goto unlock;
+ lec &= ec_mask;
+ b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
+
+ if (lec != (b_nvram & ec_mask)) {
+ /* NVRAM needs update */
+ b_nvram &= ~ec_mask;
+ b_nvram |= lec;
+ nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
+ dbg_printk(TPACPI_DBG_MIXER,
+ "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+ } else {
+ vdbg_printk(TPACPI_DBG_MIXER,
+ "NVRAM mixer status already is 0x%02x (0x%02x)\n",
+ (unsigned int) lec, (unsigned int) b_nvram);
+ }
+
+unlock:
+ mutex_unlock(&volume_mutex);
+}
+
+static int volume_get_status_ec(u8 *status)
+{
+ u8 s;
+
+ if (!acpi_ec_read(TP_EC_AUDIO, &s))
+ return -EIO;
+
+ *status = s;
+
+ dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
+
+ return 0;
+}
+
+static int volume_get_status(u8 *status)
+{
+ return volume_get_status_ec(status);
+}
+
+static int volume_set_status_ec(const u8 status)
+{
+ if (!acpi_ec_write(TP_EC_AUDIO, status))
+ return -EIO;
+
+ dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
+
+ /*
+ * On X200s, and possibly on others, it can take a while for
+ * reads to become correct.
+ */
+ msleep(1);
+
+ return 0;
+}
+
+static int volume_set_status(const u8 status)
+{
+ return volume_set_status_ec(status);
+}
+
+/* returns < 0 on error, 0 on no change, 1 on change */
+static int __volume_set_mute_ec(const bool mute)
+{
+ int rc;
+ u8 s, n;
+
+ if (mutex_lock_killable(&volume_mutex) < 0)
+ return -EINTR;
+
+ rc = volume_get_status_ec(&s);
+ if (rc)
+ goto unlock;
+
+ n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
+ s & ~TP_EC_AUDIO_MUTESW_MSK;
+
+ if (n != s) {
+ rc = volume_set_status_ec(n);
+ if (!rc)
+ rc = 1;
+ }
+
+unlock:
+ mutex_unlock(&volume_mutex);
+ return rc;
+}
+
+static int volume_alsa_set_mute(const bool mute)
+{
+ dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
+ (mute) ? "" : "un");
+ return __volume_set_mute_ec(mute);
+}
+
+static int volume_set_mute(const bool mute)
+{
+ int rc;
+
+ dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
+ (mute) ? "" : "un");
+
+ rc = __volume_set_mute_ec(mute);
+ return (rc < 0) ? rc : 0;
+}
+
+/* returns < 0 on error, 0 on no change, 1 on change */
+static int __volume_set_volume_ec(const u8 vol)
+{
+ int rc;
+ u8 s, n;
+
+ if (vol > TP_EC_VOLUME_MAX)
+ return -EINVAL;
+
+ if (mutex_lock_killable(&volume_mutex) < 0)
+ return -EINTR;
+
+ rc = volume_get_status_ec(&s);
+ if (rc)
+ goto unlock;
+
+ n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
+
+ if (n != s) {
+ rc = volume_set_status_ec(n);
+ if (!rc)
+ rc = 1;
+ }
+
+unlock:
+ mutex_unlock(&volume_mutex);
+ return rc;
+}
+
+static int volume_set_software_mute(bool startup)
+{
+ int result;
+
+ if (!tpacpi_is_lenovo())
+ return -ENODEV;
+
+ if (startup) {
+ if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
+ "HAUM", "qd"))
+ return -EIO;
+
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "Initial HAUM setting was %d\n",
+ software_mute_orig_mode);
+ }
+
+ if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
+ (int)TP_EC_MUTE_BTN_NONE))
+ return -EIO;
+
+ if (result != TP_EC_MUTE_BTN_NONE)
+ pr_warn("Unexpected SAUM result %d\n",
+ result);
+
+ /*
+ * In software mute mode, the standard codec controls take
+ * precendence, so we unmute the ThinkPad HW switch at
+ * startup. Just on case there are SAUM-capable ThinkPads
+ * with level controls, set max HW volume as well.
+ */
+ if (tp_features.mixer_no_level_control)
+ result = volume_set_mute(false);
+ else
+ result = volume_set_status(TP_EC_VOLUME_MAX);
+
+ if (result != 0)
+ pr_warn("Failed to unmute the HW mute switch\n");
+
+ return 0;
+}
+
+static void volume_exit_software_mute(void)
+{
+ int r;
+
+ if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
+ || r != software_mute_orig_mode)
+ pr_warn("Failed to restore mute mode\n");
+}
+
+static int volume_alsa_set_volume(const u8 vol)
+{
+ dbg_printk(TPACPI_DBG_MIXER,
+ "ALSA: trying to set volume level to %hu\n", vol);
+ return __volume_set_volume_ec(vol);
+}
+
+static void volume_alsa_notify_change(void)
+{
+ struct tpacpi_alsa_data *d;
+
+ if (alsa_card && alsa_card->private_data) {
+ d = alsa_card->private_data;
+ if (d->ctl_mute_id)
+ snd_ctl_notify(alsa_card,
+ SNDRV_CTL_EVENT_MASK_VALUE,
+ d->ctl_mute_id);
+ if (d->ctl_vol_id)
+ snd_ctl_notify(alsa_card,
+ SNDRV_CTL_EVENT_MASK_VALUE,
+ d->ctl_vol_id);
+ }
+}
+
+static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = TP_EC_VOLUME_MAX;
+ return 0;
+}
+
+static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ u8 s;
+ int rc;
+
+ rc = volume_get_status(&s);
+ if (rc < 0)
+ return rc;
+
+ ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
+ return 0;
+}
+
+static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
+ ucontrol->value.integer.value[0]);
+ return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
+}
+
+#define volume_alsa_mute_info snd_ctl_boolean_mono_info
+
+static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ u8 s;
+ int rc;
+
+ rc = volume_get_status(&s);
+ if (rc < 0)
+ return rc;
+
+ ucontrol->value.integer.value[0] =
+ (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
+ return 0;
+}
+
+static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ tpacpi_disclose_usertask("ALSA", "%smute\n",
+ ucontrol->value.integer.value[0] ?
+ "un" : "");
+ return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
+}
+
+static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Console Playback Volume",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .info = volume_alsa_vol_info,
+ .get = volume_alsa_vol_get,
+};
+
+static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Console Playback Switch",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .info = volume_alsa_mute_info,
+ .get = volume_alsa_mute_get,
+};
+
+static void volume_suspend(void)
+{
+ tpacpi_volume_checkpoint_nvram();
+}
+
+static void volume_resume(void)
+{
+ if (software_mute_active) {
+ if (volume_set_software_mute(false) < 0)
+ pr_warn("Failed to restore software mute\n");
+ } else {
+ volume_alsa_notify_change();
+ }
+}
+
+static void volume_shutdown(void)
+{
+ tpacpi_volume_checkpoint_nvram();
+}
+
+static void volume_exit(void)
+{
+ if (alsa_card) {
+ snd_card_free(alsa_card);
+ alsa_card = NULL;
+ }
+
+ tpacpi_volume_checkpoint_nvram();
+
+ if (software_mute_active)
+ volume_exit_software_mute();
+}
+
+static int __init volume_create_alsa_mixer(void)
+{
+ struct snd_card *card;
+ struct tpacpi_alsa_data *data;
+ struct snd_kcontrol *ctl_vol;
+ struct snd_kcontrol *ctl_mute;
+ int rc;
+
+ rc = snd_card_new(&tpacpi_pdev->dev,
+ alsa_index, alsa_id, THIS_MODULE,
+ sizeof(struct tpacpi_alsa_data), &card);
+ if (rc < 0 || !card) {
+ pr_err("Failed to create ALSA card structures: %d\n", rc);
+ return -ENODEV;
+ }
+
+ BUG_ON(!card->private_data);
+ data = card->private_data;
+ data->card = card;
+
+ strscpy(card->driver, TPACPI_ALSA_DRVNAME);
+ strscpy(card->shortname, TPACPI_ALSA_SHRTNAME);
+ snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
+ (thinkpad_id.ec_version_str) ?
+ thinkpad_id.ec_version_str : "(unknown)");
+ snprintf(card->longname, sizeof(card->longname),
+ "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
+ (thinkpad_id.ec_version_str) ?
+ thinkpad_id.ec_version_str : "unknown");
+
+ if (volume_control_allowed) {
+ volume_alsa_control_vol.put = volume_alsa_vol_put;
+ volume_alsa_control_vol.access =
+ SNDRV_CTL_ELEM_ACCESS_READWRITE;
+
+ volume_alsa_control_mute.put = volume_alsa_mute_put;
+ volume_alsa_control_mute.access =
+ SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ }
+
+ if (!tp_features.mixer_no_level_control) {
+ ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
+ rc = snd_ctl_add(card, ctl_vol);
+ if (rc < 0) {
+ pr_err("Failed to create ALSA volume control: %d\n",
+ rc);
+ goto err_exit;
+ }
+ data->ctl_vol_id = &ctl_vol->id;
+ }
+
+ ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
+ rc = snd_ctl_add(card, ctl_mute);
+ if (rc < 0) {
+ pr_err("Failed to create ALSA mute control: %d\n", rc);
+ goto err_exit;
+ }
+ data->ctl_mute_id = &ctl_mute->id;
+
+ rc = snd_card_register(card);
+ if (rc < 0) {
+ pr_err("Failed to register ALSA card: %d\n", rc);
+ goto err_exit;
+ }
+
+ alsa_card = card;
+ return 0;
+
+err_exit:
+ snd_card_free(card);
+ return -ENODEV;
+}
+
+#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
+#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
+
+static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
+ /* Whitelist volume level on all IBM by default */
+ { .vendor = PCI_VENDOR_ID_IBM,
+ .bios = TPACPI_MATCH_ANY,
+ .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_VOL_Q_LEVEL },
+
+ /* Lenovo models with volume control (needs confirmation) */
+ TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
+ TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
+ TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
+ TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
+ TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
+ TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
+ TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
+
+ /* Whitelist mute-only on all Lenovo by default */
+ { .vendor = PCI_VENDOR_ID_LENOVO,
+ .bios = TPACPI_MATCH_ANY,
+ .ec = TPACPI_MATCH_ANY,
+ .quirks = TPACPI_VOL_Q_MUTEONLY }
+};
+
+static int __init volume_init(struct ibm_init_struct *iibm)
+{
+ unsigned long quirks;
+ int rc;
+
+ vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
+
+ mutex_init(&volume_mutex);
+
+ /*
+ * Check for module parameter bogosity, note that we
+ * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
+ * able to detect "unspecified"
+ */
+ if (volume_mode > TPACPI_VOL_MODE_MAX)
+ return -EINVAL;
+
+ if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
+ pr_err("UCMS step volume mode not implemented, please contact %s\n",
+ TPACPI_MAIL);
+ return -ENODEV;
+ }
+
+ if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
+ return -EINVAL;
+
+ /*
+ * The ALSA mixer is our primary interface.
+ * When disabled, don't install the subdriver at all
+ */
+ if (!alsa_enable) {
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
+ return -ENODEV;
+ }
+
+ quirks = tpacpi_check_quirks(volume_quirk_table,
+ ARRAY_SIZE(volume_quirk_table));
+
+ switch (volume_capabilities) {
+ case TPACPI_VOL_CAP_AUTO:
+ if (quirks & TPACPI_VOL_Q_MUTEONLY)
+ tp_features.mixer_no_level_control = 1;
+ else if (quirks & TPACPI_VOL_Q_LEVEL)
+ tp_features.mixer_no_level_control = 0;
+ else
+ return -ENODEV; /* no mixer */
+ break;
+ case TPACPI_VOL_CAP_VOLMUTE:
+ tp_features.mixer_no_level_control = 0;
+ break;
+ case TPACPI_VOL_CAP_MUTEONLY:
+ tp_features.mixer_no_level_control = 1;
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "using user-supplied volume_capabilities=%d\n",
+ volume_capabilities);
+
+ if (volume_mode == TPACPI_VOL_MODE_AUTO ||
+ volume_mode == TPACPI_VOL_MODE_MAX) {
+ volume_mode = TPACPI_VOL_MODE_ECNVRAM;
+
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "driver auto-selected volume_mode=%d\n",
+ volume_mode);
+ } else {
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "using user-supplied volume_mode=%d\n",
+ volume_mode);
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "mute is supported, volume control is %s\n",
+ str_supported(!tp_features.mixer_no_level_control));
+
+ if (software_mute_requested && volume_set_software_mute(true) == 0) {
+ software_mute_active = true;
+ } else {
+ rc = volume_create_alsa_mixer();
+ if (rc) {
+ pr_err("Could not create the ALSA mixer interface\n");
+ return rc;
+ }
+
+ pr_info("Console audio control enabled, mode: %s\n",
+ (volume_control_allowed) ?
+ "override (read/write)" :
+ "monitor (read only)");
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
+ "registering volume hotkeys as change notification\n");
+ tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
+ | TP_ACPI_HKEY_VOLUP_MASK
+ | TP_ACPI_HKEY_VOLDWN_MASK
+ | TP_ACPI_HKEY_MUTE_MASK);
+
+ return 0;
+}
+
+static int volume_read(struct seq_file *m)
+{
+ u8 status;
+
+ if (volume_get_status(&status) < 0) {
+ seq_printf(m, "level:\t\tunreadable\n");
+ } else {
+ if (tp_features.mixer_no_level_control)
+ seq_printf(m, "level:\t\tunsupported\n");
+ else
+ seq_printf(m, "level:\t\t%d\n",
+ status & TP_EC_AUDIO_LVL_MSK);
+
+ seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW)));
+
+ if (volume_control_allowed) {
+ seq_printf(m, "commands:\tunmute, mute\n");
+ if (!tp_features.mixer_no_level_control) {
+ seq_printf(m, "commands:\tup, down\n");
+ seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
+ TP_EC_VOLUME_MAX);
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int volume_write(char *buf)
+{
+ u8 s;
+ u8 new_level, new_mute;
+ int l;
+ char *cmd;
+ int rc;
+
+ /*
+ * We do allow volume control at driver startup, so that the
+ * user can set initial state through the volume=... parameter hack.
+ */
+ if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
+ if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
+ tp_warned.volume_ctrl_forbidden = 1;
+ pr_notice("Console audio control in monitor mode, changes are not allowed\n");
+ pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
+ }
+ return -EPERM;
+ }
+
+ rc = volume_get_status(&s);
+ if (rc < 0)
+ return rc;
+
+ new_level = s & TP_EC_AUDIO_LVL_MSK;
+ new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
+
+ while ((cmd = strsep(&buf, ","))) {
+ if (!tp_features.mixer_no_level_control) {
+ if (strstarts(cmd, "up")) {
+ if (new_mute)
+ new_mute = 0;
+ else if (new_level < TP_EC_VOLUME_MAX)
+ new_level++;
+ continue;
+ } else if (strstarts(cmd, "down")) {
+ if (new_mute)
+ new_mute = 0;
+ else if (new_level > 0)
+ new_level--;
+ continue;
+ } else if (sscanf(cmd, "level %u", &l) == 1 &&
+ l >= 0 && l <= TP_EC_VOLUME_MAX) {
+ new_level = l;
+ continue;
+ }
+ }
+ if (strstarts(cmd, "mute"))
+ new_mute = TP_EC_AUDIO_MUTESW_MSK;
+ else if (strstarts(cmd, "unmute"))
+ new_mute = 0;
+ else
+ return -EINVAL;
+ }
+
+ if (tp_features.mixer_no_level_control) {
+ tpacpi_disclose_usertask("procfs volume", "%smute\n",
+ new_mute ? "" : "un");
+ rc = volume_set_mute(!!new_mute);
+ } else {
+ tpacpi_disclose_usertask("procfs volume",
+ "%smute and set level to %d\n",
+ new_mute ? "" : "un", new_level);
+ rc = volume_set_status(new_mute | new_level);
+ }
+ volume_alsa_notify_change();
+
+ return (rc == -EINTR) ? -ERESTARTSYS : rc;
+}
+
+static struct ibm_struct volume_driver_data = {
+ .name = "volume",
+ .read = volume_read,
+ .write = volume_write,
+ .exit = volume_exit,
+ .suspend = volume_suspend,
+ .resume = volume_resume,
+ .shutdown = volume_shutdown,
+};
+
+#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+#define alsa_card NULL
+
+static inline void volume_alsa_notify_change(void)
+{
+}
+
+static int __init volume_init(struct ibm_init_struct *iibm)
+{
+ pr_info("volume: disabled as there is no ALSA support in this kernel\n");
+
+ return -ENODEV;
+}
+
+static struct ibm_struct volume_driver_data = {
+ .name = "volume",
+};
+
+#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+/*************************************************************************
+ * Fan subdriver
+ */
+
+/*
+ * FAN ACCESS MODES
+ *
+ * TPACPI_FAN_RD_ACPI_GFAN:
+ * ACPI GFAN method: returns fan level
+ *
+ * see TPACPI_FAN_WR_ACPI_SFAN
+ * EC 0x2f (HFSP) not available if GFAN exists
+ *
+ * TPACPI_FAN_WR_ACPI_SFAN:
+ * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
+ *
+ * EC 0x2f (HFSP) might be available *for reading*, but do not use
+ * it for writing.
+ *
+ * TPACPI_FAN_RD_ACPI_FANG:
+ * ACPI FANG method: returns fan control register
+ *
+ * Takes one parameter which is 0x8100 plus the offset to EC memory
+ * address 0xf500 and returns the byte at this address.
+ *
+ * 0xf500:
+ * When the value is less than 9 automatic mode is enabled
+ * 0xf502:
+ * Contains the current fan speed from 0-100%
+ * 0xf506:
+ * Bit 7 has to be set in order to enable manual control by
+ * writing a value >= 9 to 0xf500
+ *
+ * TPACPI_FAN_WR_ACPI_FANW:
+ * ACPI FANW method: sets fan control registers
+ *
+ * Takes 0x8100 plus the offset to EC memory address 0xf500 and the
+ * value to be written there as parameters.
+ *
+ * see TPACPI_FAN_RD_ACPI_FANG
+ *
+ * TPACPI_FAN_WR_TPEC:
+ * ThinkPad EC register 0x2f (HFSP): fan control loop mode
+ * Supported on almost all ThinkPads
+ *
+ * Fan speed changes of any sort (including those caused by the
+ * disengaged mode) are usually done slowly by the firmware as the
+ * maximum amount of fan duty cycle change per second seems to be
+ * limited.
+ *
+ * Reading is not available if GFAN exists.
+ * Writing is not available if SFAN exists.
+ *
+ * Bits
+ * 7 automatic mode engaged;
+ * (default operation mode of the ThinkPad)
+ * fan level is ignored in this mode.
+ * 6 full speed mode (takes precedence over bit 7);
+ * not available on all thinkpads. May disable
+ * the tachometer while the fan controller ramps up
+ * the speed (which can take up to a few *minutes*).
+ * Speeds up fan to 100% duty-cycle, which is far above
+ * the standard RPM levels. It is not impossible that
+ * it could cause hardware damage.
+ * 5-3 unused in some models. Extra bits for fan level
+ * in others, but still useless as all values above
+ * 7 map to the same speed as level 7 in these models.
+ * 2-0 fan level (0..7 usually)
+ * 0x00 = stop
+ * 0x07 = max (set when temperatures critical)
+ * Some ThinkPads may have other levels, see
+ * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
+ *
+ * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
+ * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
+ * does so, its initial value is meaningless (0x07).
+ *
+ * For firmware bugs, refer to:
+ * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
+ *
+ * ----
+ *
+ * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
+ * Main fan tachometer reading (in RPM)
+ *
+ * This register is present on all ThinkPads with a new-style EC, and
+ * it is known not to be present on the A21m/e, and T22, as there is
+ * something else in offset 0x84 according to the ACPI DSDT. Other
+ * ThinkPads from this same time period (and earlier) probably lack the
+ * tachometer as well.
+ *
+ * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
+ * was never fixed by IBM to report the EC firmware version string
+ * probably support the tachometer (like the early X models), so
+ * detecting it is quite hard. We need more data to know for sure.
+ *
+ * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
+ * might result.
+ *
+ * FIRMWARE BUG: may go stale while the EC is switching to full speed
+ * mode.
+ *
+ * For firmware bugs, refer to:
+ * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
+ *
+ * ----
+ *
+ * ThinkPad EC register 0x31 bit 0 (only on select models)
+ *
+ * When bit 0 of EC register 0x31 is zero, the tachometer registers
+ * show the speed of the main fan. When bit 0 of EC register 0x31
+ * is one, the tachometer registers show the speed of the auxiliary
+ * fan.
+ *
+ * Fan control seems to affect both fans, regardless of the state
+ * of this bit.
+ *
+ * So far, only the firmware for the X60/X61 non-tablet versions
+ * seem to support this (firmware TP-7M).
+ *
+ * TPACPI_FAN_WR_ACPI_FANS:
+ * ThinkPad X31, X40, X41. Not available in the X60.
+ *
+ * FANS ACPI handle: takes three arguments: low speed, medium speed,
+ * high speed. ACPI DSDT seems to map these three speeds to levels
+ * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
+ * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
+ *
+ * The speeds are stored on handles
+ * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
+ *
+ * There are three default speed sets, accessible as handles:
+ * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
+ *
+ * ACPI DSDT switches which set is in use depending on various
+ * factors.
+ *
+ * TPACPI_FAN_WR_TPEC is also available and should be used to
+ * command the fan. The X31/X40/X41 seems to have 8 fan levels,
+ * but the ACPI tables just mention level 7.
+ *
+ * TPACPI_FAN_RD_TPEC_NS:
+ * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.)
+ * that are using non-standard EC locations for reporting fan speeds.
+ * Currently these platforms only provide fan rpm reporting.
+ *
+ */
+
+#define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */
+
+#define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */
+#define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */
+#define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */
+
+enum { /* Fan control constants */
+ fan_status_offset = 0x2f, /* EC register 0x2f */
+ fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
+ * 0x84 must be read before 0x85 */
+ fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
+ bit 0 selects which fan is active */
+
+ fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */
+ fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */
+ fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */
+ fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */
+
+ TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
+ TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
+
+ TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
+};
+
+enum fan_status_access_mode {
+ TPACPI_FAN_NONE = 0, /* No fan status or control */
+ TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
+ TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */
+ TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
+ TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */
+};
+
+enum fan_control_access_mode {
+ TPACPI_FAN_WR_NONE = 0, /* No fan control */
+ TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
+ TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */
+ TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
+ TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
+};
+
+enum fan_control_commands {
+ TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
+ TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
+ TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
+ * and also watchdog cmd */
+};
+
+static bool fan_control_allowed;
+
+static enum fan_status_access_mode fan_status_access_mode;
+static enum fan_control_access_mode fan_control_access_mode;
+static enum fan_control_commands fan_control_commands;
+
+static u8 fan_control_initial_status;
+static u8 fan_control_desired_level;
+static u8 fan_control_resume_level;
+static int fan_watchdog_maxinterval;
+
+static bool fan_with_ns_addr;
+static bool ecfw_with_fan_dec_rpm;
+static bool fan_speed_in_tpr;
+
+static struct mutex fan_mutex;
+
+static void fan_watchdog_fire(struct work_struct *ignored);
+static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
+
+TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
+TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
+ "\\FSPD", /* 600e/x, 770e, 770x */
+ ); /* all others */
+TPACPI_HANDLE(fang, ec, "FANG", /* E531 */
+ ); /* all others */
+TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
+ "JFNS", /* 770x-JL */
+ ); /* all others */
+TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */
+ ); /* all others */
+
+/*
+ * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
+ * HFSP register at boot, so it contains 0x07 but the Thinkpad could
+ * be in auto mode (0x80).
+ *
+ * This is corrected by any write to HFSP either by the driver, or
+ * by the firmware.
+ *
+ * We assume 0x07 really means auto mode while this quirk is active,
+ * as this is far more likely than the ThinkPad being in level 7,
+ * which is only used by the firmware during thermal emergencies.
+ *
+ * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
+ * TP-70 (T43, R52), which are known to be buggy.
+ */
+
+static void fan_quirk1_setup(void)
+{
+ if (fan_control_initial_status == 0x07) {
+ pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
+ tp_features.fan_ctrl_status_undef = 1;
+ }
+}
+
+static void fan_quirk1_handle(u8 *fan_status)
+{
+ if (unlikely(tp_features.fan_ctrl_status_undef)) {
+ if (*fan_status != fan_control_initial_status) {
+ /* something changed the HFSP regisnter since
+ * driver init time, so it is not undefined
+ * anymore */
+ tp_features.fan_ctrl_status_undef = 0;
+ } else {
+ /* Return most likely status. In fact, it
+ * might be the only possible status */
+ *fan_status = TP_EC_FAN_AUTO;
+ }
+ }
+}
+
+/* Select main fan on X60/X61, NOOP on others */
+static bool fan_select_fan1(void)
+{
+ if (tp_features.second_fan) {
+ u8 val;
+
+ if (ec_read(fan_select_offset, &val) < 0)
+ return false;
+ val &= 0xFEU;
+ if (ec_write(fan_select_offset, val) < 0)
+ return false;
+ }
+ return true;
+}
+
+/* Select secondary fan on X60/X61 */
+static bool fan_select_fan2(void)
+{
+ u8 val;
+
+ if (!tp_features.second_fan)
+ return false;
+
+ if (ec_read(fan_select_offset, &val) < 0)
+ return false;
+ val |= 0x01U;
+ if (ec_write(fan_select_offset, val) < 0)
+ return false;
+
+ return true;
+}
+
+static void fan_update_desired_level(u8 status)
+{
+ lockdep_assert_held(&fan_mutex);
+
+ if ((status &
+ (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
+ if (status > 7)
+ fan_control_desired_level = 7;
+ else
+ fan_control_desired_level = status;
+ }
+}
+
+static int fan_get_status(u8 *status)
+{
+ u8 s;
+
+ /* TODO:
+ * Add TPACPI_FAN_RD_ACPI_FANS ? */
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_ACPI_GFAN: {
+ /* 570, 600e/x, 770e, 770x */
+ int res;
+
+ if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
+ return -EIO;
+
+ if (likely(status))
+ *status = res & 0x07;
+
+ break;
+ }
+ case TPACPI_FAN_RD_ACPI_FANG: {
+ /* E531 */
+ int mode, speed;
+
+ if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100)))
+ return -EIO;
+ if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102)))
+ return -EIO;
+
+ if (likely(status)) {
+ *status = speed * 7 / 100;
+ if (mode < 9)
+ *status |= TP_EC_FAN_AUTO;
+ }
+
+ break;
+ }
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
+ return -EIO;
+
+ if (likely(status)) {
+ *status = s;
+ fan_quirk1_handle(status);
+ }
+
+ break;
+ case TPACPI_FAN_RD_TPEC_NS:
+ /* Default mode is AUTO which means controlled by EC */
+ if (!acpi_ec_read(fan_status_offset_ns, &s))
+ return -EIO;
+
+ if (status)
+ *status = s;
+
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int fan_get_status_safe(u8 *status)
+{
+ int rc;
+ u8 s;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+ rc = fan_get_status(&s);
+ /* NS EC doesn't have register with level settings */
+ if (!rc && !fan_with_ns_addr)
+ fan_update_desired_level(s);
+ mutex_unlock(&fan_mutex);
+
+ if (rc)
+ return rc;
+ if (status)
+ *status = s;
+
+ return 0;
+}
+
+static int fan_get_speed(unsigned int *speed)
+{
+ u8 hi, lo;
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ if (unlikely(!fan_select_fan1()))
+ return -EIO;
+ if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
+ !acpi_ec_read(fan_rpm_offset + 1, &hi)))
+ return -EIO;
+
+ if (likely(speed)) {
+ *speed = (hi << 8) | lo;
+ if (fan_speed_in_tpr && *speed != 0)
+ *speed = FAN_CLOCK_TPM / *speed;
+ }
+ break;
+ case TPACPI_FAN_RD_TPEC_NS:
+ if (!acpi_ec_read(fan_rpm_status_ns, &lo))
+ return -EIO;
+
+ if (speed)
+ *speed = lo ? FAN_RPM_CAL_CONST / lo : 0;
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int fan2_get_speed(unsigned int *speed)
+{
+ u8 hi, lo, status;
+ bool rc;
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_TPEC:
+ /* all except 570, 600e/x, 770e, 770x */
+ if (unlikely(!fan_select_fan2()))
+ return -EIO;
+ rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
+ !acpi_ec_read(fan_rpm_offset + 1, &hi);
+ fan_select_fan1(); /* play it safe */
+ if (rc)
+ return -EIO;
+
+ if (likely(speed)) {
+ *speed = (hi << 8) | lo;
+ if (fan_speed_in_tpr && *speed != 0)
+ *speed = FAN_CLOCK_TPM / *speed;
+ }
+ break;
+
+ case TPACPI_FAN_RD_TPEC_NS:
+ rc = !acpi_ec_read(fan2_status_offset_ns, &status);
+ if (rc)
+ return -EIO;
+ if (!(status & FAN_NS_CTRL_STATUS)) {
+ pr_info("secondary fan control not supported\n");
+ return -EIO;
+ }
+ rc = !acpi_ec_read(fan2_rpm_status_ns, &lo);
+ if (rc)
+ return -EIO;
+ if (speed)
+ *speed = lo ? FAN_RPM_CAL_CONST / lo : 0;
+ break;
+ case TPACPI_FAN_RD_ACPI_FANG: {
+ /* E531 */
+ int speed_tmp;
+
+ if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102)))
+ return -EIO;
+
+ if (likely(speed))
+ *speed = speed_tmp * 65535 / 100;
+ break;
+ }
+
+ default:
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int fan_set_level(int level)
+{
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ if ((level < 0) || (level > 7))
+ return -EINVAL;
+
+ if (tp_features.second_fan_ctl) {
+ if (!fan_select_fan2() ||
+ !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) {
+ pr_warn("Couldn't set 2nd fan level, disabling support\n");
+ tp_features.second_fan_ctl = 0;
+ }
+ fan_select_fan1();
+ }
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
+ return -EIO;
+ break;
+
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ if (!(level & TP_EC_FAN_AUTO) &&
+ !(level & TP_EC_FAN_FULLSPEED) &&
+ ((level < 0) || (level > 7)))
+ return -EINVAL;
+
+ /* safety net should the EC not support AUTO
+ * or FULLSPEED mode bits and just ignore them */
+ if (level & TP_EC_FAN_FULLSPEED)
+ level |= 7; /* safety min speed 7 */
+ else if (level & TP_EC_FAN_AUTO)
+ level |= 4; /* safety min speed 4 */
+
+ if (tp_features.second_fan_ctl) {
+ if (!fan_select_fan2() ||
+ !acpi_ec_write(fan_status_offset, level)) {
+ pr_warn("Couldn't set 2nd fan level, disabling support\n");
+ tp_features.second_fan_ctl = 0;
+ }
+ fan_select_fan1();
+
+ }
+ if (!acpi_ec_write(fan_status_offset, level))
+ return -EIO;
+ else
+ tp_features.fan_ctrl_status_undef = 0;
+ break;
+
+ case TPACPI_FAN_WR_ACPI_FANW:
+ if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7))
+ return -EINVAL;
+ if (level & TP_EC_FAN_FULLSPEED)
+ return -EINVAL;
+
+ if (level & TP_EC_FAN_AUTO) {
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) {
+ return -EIO;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) {
+ return -EIO;
+ }
+ } else {
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
+ return -EIO;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
+ return -EIO;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) {
+ return -EIO;
+ }
+ }
+ break;
+
+ default:
+ return -ENXIO;
+ }
+
+ vdbg_printk(TPACPI_DBG_FAN,
+ "fan control: set fan control register to 0x%02x\n", level);
+ return 0;
+}
+
+static int fan_set_level_safe(int level)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ if (level == TPACPI_FAN_LAST_LEVEL)
+ level = fan_control_desired_level;
+
+ rc = fan_set_level(level);
+ if (!rc)
+ fan_update_desired_level(level);
+
+ mutex_unlock(&fan_mutex);
+ return rc;
+}
+
+static int fan_set_enable(void)
+{
+ u8 s = 0;
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ rc = fan_get_status(&s);
+ if (rc)
+ break;
+
+ /* Don't go out of emergency fan mode */
+ if (s != 7) {
+ s &= 0x07;
+ s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
+ }
+
+ if (!acpi_ec_write(fan_status_offset, s))
+ rc = -EIO;
+ else {
+ tp_features.fan_ctrl_status_undef = 0;
+ rc = 0;
+ }
+ break;
+
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ rc = fan_get_status(&s);
+ if (rc)
+ break;
+
+ s &= 0x07;
+
+ /* Set fan to at least level 4 */
+ s |= 4;
+
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
+ rc = -EIO;
+ else
+ rc = 0;
+ break;
+
+ case TPACPI_FAN_WR_ACPI_FANW:
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) {
+ rc = -EIO;
+ break;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) {
+ rc = -EIO;
+ break;
+ }
+
+ rc = 0;
+ break;
+
+ default:
+ rc = -ENXIO;
+ }
+
+ mutex_unlock(&fan_mutex);
+
+ if (!rc)
+ vdbg_printk(TPACPI_DBG_FAN,
+ "fan control: set fan control register to 0x%02x\n",
+ s);
+ return rc;
+}
+
+static int fan_set_disable(void)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ rc = 0;
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ if (!acpi_ec_write(fan_status_offset, 0x00))
+ rc = -EIO;
+ else {
+ fan_control_desired_level = 0;
+ tp_features.fan_ctrl_status_undef = 0;
+ }
+ break;
+
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
+ rc = -EIO;
+ else
+ fan_control_desired_level = 0;
+ break;
+
+ case TPACPI_FAN_WR_ACPI_FANW:
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
+ rc = -EIO;
+ break;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
+ rc = -EIO;
+ break;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) {
+ rc = -EIO;
+ break;
+ }
+ rc = 0;
+ break;
+
+ default:
+ rc = -ENXIO;
+ }
+
+ if (!rc)
+ vdbg_printk(TPACPI_DBG_FAN,
+ "fan control: set fan control register to 0\n");
+
+ mutex_unlock(&fan_mutex);
+ return rc;
+}
+
+static int fan_set_speed(int speed)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ rc = 0;
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_FANS:
+ if (speed >= 0 && speed <= 65535) {
+ if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
+ speed, speed, speed))
+ rc = -EIO;
+ } else
+ rc = -EINVAL;
+ break;
+
+ case TPACPI_FAN_WR_ACPI_FANW:
+ if (speed >= 0 && speed <= 65535) {
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
+ rc = -EIO;
+ break;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
+ rc = -EIO;
+ break;
+ }
+ if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd",
+ 0x8102, speed * 100 / 65535))
+ rc = -EIO;
+ } else
+ rc = -EINVAL;
+ break;
+
+ default:
+ rc = -ENXIO;
+ }
+
+ mutex_unlock(&fan_mutex);
+ return rc;
+}
+
+static void fan_watchdog_reset(void)
+{
+ if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
+ return;
+
+ if (fan_watchdog_maxinterval > 0 &&
+ tpacpi_lifecycle != TPACPI_LIFE_EXITING)
+ mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
+ secs_to_jiffies(fan_watchdog_maxinterval));
+ else
+ cancel_delayed_work(&fan_watchdog_task);
+}
+
+static void fan_watchdog_fire(struct work_struct *ignored)
+{
+ int rc;
+
+ if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
+ return;
+
+ pr_notice("fan watchdog: enabling fan\n");
+ rc = fan_set_enable();
+ if (rc < 0) {
+ pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
+ rc);
+ /* reschedule for later */
+ fan_watchdog_reset();
+ }
+}
+
+/*
+ * SYSFS fan layout: hwmon compatible (device)
+ *
+ * pwm*_enable:
+ * 0: "disengaged" mode
+ * 1: manual mode
+ * 2: native EC "auto" mode (recommended, hardware default)
+ *
+ * pwm*: set speed in manual mode, ignored otherwise.
+ * 0 is level 0; 255 is level 7. Intermediate points done with linear
+ * interpolation.
+ *
+ * fan*_input: tachometer reading, RPM
+ *
+ *
+ * SYSFS fan layout: extensions
+ *
+ * fan_watchdog (driver):
+ * fan watchdog interval in seconds, 0 disables (default), max 120
+ */
+
+/* sysfs fan pwm1_enable ----------------------------------------------- */
+static ssize_t fan_pwm1_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res, mode;
+ u8 status;
+
+ res = fan_get_status_safe(&status);
+ if (res)
+ return res;
+
+ if (status & TP_EC_FAN_FULLSPEED) {
+ mode = 0;
+ } else if (status & TP_EC_FAN_AUTO) {
+ mode = 2;
+ } else
+ mode = 1;
+
+ return sysfs_emit(buf, "%d\n", mode);
+}
+
+static ssize_t fan_pwm1_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res, level;
+
+ if (parse_strtoul(buf, 2, &t))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask("hwmon pwm1_enable",
+ "set fan mode to %lu\n", t);
+
+ switch (t) {
+ case 0:
+ level = TP_EC_FAN_FULLSPEED;
+ break;
+ case 1:
+ level = TPACPI_FAN_LAST_LEVEL;
+ break;
+ case 2:
+ level = TP_EC_FAN_AUTO;
+ break;
+ case 3:
+ /* reserved for software-controlled auto mode */
+ return -ENOSYS;
+ default:
+ return -EINVAL;
+ }
+
+ res = fan_set_level_safe(level);
+ if (res == -ENXIO)
+ return -EINVAL;
+ else if (res < 0)
+ return res;
+
+ fan_watchdog_reset();
+
+ return count;
+}
+
+static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
+ fan_pwm1_enable_show, fan_pwm1_enable_store);
+
+/* sysfs fan pwm1 ------------------------------------------------------ */
+static ssize_t fan_pwm1_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ u8 status;
+
+ res = fan_get_status_safe(&status);
+ if (res)
+ return res;
+
+ if ((status &
+ (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
+ status = fan_control_desired_level;
+
+ if (status > 7)
+ status = 7;
+
+ return sysfs_emit(buf, "%u\n", (status * 255) / 7);
+}
+
+static ssize_t fan_pwm1_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long s;
+ int rc;
+ u8 status, newlevel;
+
+ if (parse_strtoul(buf, 255, &s))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask("hwmon pwm1",
+ "set fan speed to %lu\n", s);
+
+ /* scale down from 0-255 to 0-7 */
+ newlevel = (s >> 5) & 0x07;
+
+ if (mutex_lock_killable(&fan_mutex))
+ return -ERESTARTSYS;
+
+ rc = fan_get_status(&status);
+ if (!rc && (status &
+ (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
+ rc = fan_set_level(newlevel);
+ if (rc == -ENXIO)
+ rc = -EINVAL;
+ else if (!rc) {
+ fan_update_desired_level(newlevel);
+ fan_watchdog_reset();
+ }
+ }
+
+ mutex_unlock(&fan_mutex);
+ return (rc) ? rc : count;
+}
+
+static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
+
+/* sysfs fan fan1_input ------------------------------------------------ */
+static ssize_t fan_fan1_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ unsigned int speed;
+
+ res = fan_get_speed(&speed);
+ if (res < 0)
+ return res;
+
+ /* Check for fan speeds displayed in hexadecimal */
+ if (!ecfw_with_fan_dec_rpm)
+ return sysfs_emit(buf, "%u\n", speed);
+ else
+ return sysfs_emit(buf, "%x\n", speed);
+}
+
+static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
+
+/* sysfs fan fan2_input ------------------------------------------------ */
+static ssize_t fan_fan2_input_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int res;
+ unsigned int speed;
+
+ res = fan2_get_speed(&speed);
+ if (res < 0)
+ return res;
+
+ /* Check for fan speeds displayed in hexadecimal */
+ if (!ecfw_with_fan_dec_rpm)
+ return sysfs_emit(buf, "%u\n", speed);
+ else
+ return sysfs_emit(buf, "%x\n", speed);
+}
+
+static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
+
+/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
+static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
+{
+ return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval);
+}
+
+static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 120, &t))
+ return -EINVAL;
+
+ if (!fan_control_allowed)
+ return -EPERM;
+
+ fan_watchdog_maxinterval = t;
+ fan_watchdog_reset();
+
+ tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
+
+ return count;
+}
+static DRIVER_ATTR_RW(fan_watchdog);
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *fan_attributes[] = {
+ &dev_attr_pwm1_enable.attr,
+ &dev_attr_pwm1.attr,
+ &dev_attr_fan1_input.attr,
+ &dev_attr_fan2_input.attr,
+ NULL
+};
+
+static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
+ int n)
+{
+ if (fan_status_access_mode == TPACPI_FAN_NONE &&
+ fan_control_access_mode == TPACPI_FAN_WR_NONE)
+ return 0;
+
+ if (attr == &dev_attr_fan2_input.attr) {
+ if (!tp_features.second_fan)
+ return 0;
+ }
+
+ return attr->mode;
+}
+
+static const struct attribute_group fan_attr_group = {
+ .is_visible = fan_attr_is_visible,
+ .attrs = fan_attributes,
+};
+
+static struct attribute *fan_driver_attributes[] = {
+ &driver_attr_fan_watchdog.attr,
+ NULL
+};
+
+static const struct attribute_group fan_driver_attr_group = {
+ .is_visible = fan_attr_is_visible,
+ .attrs = fan_driver_attributes,
+};
+
+#define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */
+#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
+#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */
+#define TPACPI_FAN_NOFAN 0x0008 /* no fan available */
+#define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */
+#define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */
+#define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */
+#define TPACPI_FAN_NOACPI 0x0080 /* Don't use ACPI methods even if detected */
+
+static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
+ TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1),
+ TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1),
+ TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1),
+ TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1),
+ TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN),
+ TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN),
+ TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */
+ TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */
+ TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */
+ TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */
+ TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */
+ TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */
+ TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */
+ TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */
+ TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */
+ TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */
+ TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */
+ TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/
+ TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */
+ TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */
+ TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */
+ TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */
+ TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */
+ TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */
+ TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */
+ TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */
+ TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */
+ TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */
+ TPACPI_Q_LNV3('R', '0', '0', TPACPI_FAN_NOACPI),/* E560 */
+ TPACPI_Q_LNV3('R', '1', '2', TPACPI_FAN_NOACPI),/* T495 */
+ TPACPI_Q_LNV3('R', '1', '3', TPACPI_FAN_NOACPI),/* T495s */
+};
+
+static int __init fan_init(struct ibm_init_struct *iibm)
+{
+ unsigned long quirks;
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "initializing fan subdriver\n");
+
+ mutex_init(&fan_mutex);
+ fan_status_access_mode = TPACPI_FAN_NONE;
+ fan_control_access_mode = TPACPI_FAN_WR_NONE;
+ fan_control_commands = 0;
+ fan_watchdog_maxinterval = 0;
+ tp_features.fan_ctrl_status_undef = 0;
+ tp_features.second_fan = 0;
+ tp_features.second_fan_ctl = 0;
+ fan_control_desired_level = 7;
+
+ if (tpacpi_is_ibm()) {
+ TPACPI_ACPIHANDLE_INIT(fans);
+ TPACPI_ACPIHANDLE_INIT(gfan);
+ TPACPI_ACPIHANDLE_INIT(sfan);
+ }
+ if (tpacpi_is_lenovo()) {
+ TPACPI_ACPIHANDLE_INIT(fang);
+ TPACPI_ACPIHANDLE_INIT(fanw);
+ }
+
+ quirks = tpacpi_check_quirks(fan_quirk_table,
+ ARRAY_SIZE(fan_quirk_table));
+
+ if (quirks & TPACPI_FAN_NOFAN) {
+ pr_info("No integrated ThinkPad fan available\n");
+ return -ENODEV;
+ }
+
+ if (quirks & TPACPI_FAN_NS) {
+ pr_info("ECFW with non-standard fan reg control found\n");
+ fan_with_ns_addr = 1;
+ /* Fan ctrl support from host is undefined for now */
+ tp_features.fan_ctrl_status_undef = 1;
+ }
+
+ /* Check for the EC/BIOS with RPM reported in decimal*/
+ if (quirks & TPACPI_FAN_DECRPM) {
+ pr_info("ECFW with fan RPM as decimal in EC register\n");
+ ecfw_with_fan_dec_rpm = 1;
+ tp_features.fan_ctrl_status_undef = 1;
+ }
+
+ if (quirks & TPACPI_FAN_NOACPI) {
+ /* E560, T495, T495s */
+ pr_info("Ignoring buggy ACPI fan access method\n");
+ fang_handle = NULL;
+ fanw_handle = NULL;
+ }
+
+ if (gfan_handle) {
+ /* 570, 600e/x, 770e, 770x */
+ fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
+ } else if (fang_handle) {
+ /* E531 */
+ fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG;
+ } else {
+ /* all other ThinkPads: note that even old-style
+ * ThinkPad ECs supports the fan control register */
+ if (fan_with_ns_addr ||
+ likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) {
+ int res;
+ unsigned int speed;
+
+ fan_status_access_mode = fan_with_ns_addr ?
+ TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC;
+
+ if (quirks & TPACPI_FAN_Q1)
+ fan_quirk1_setup();
+ if (quirks & TPACPI_FAN_TPR)
+ fan_speed_in_tpr = true;
+ /* Try and probe the 2nd fan */
+ tp_features.second_fan = 1; /* needed for get_speed to work */
+ res = fan2_get_speed(&speed);
+ if (res >= 0 && speed != FAN_NOT_PRESENT) {
+ /* It responded - so let's assume it's there */
+ tp_features.second_fan = 1;
+ /* fan control not currently available for ns ECFW */
+ tp_features.second_fan_ctl = !fan_with_ns_addr;
+ pr_info("secondary fan control detected & enabled\n");
+ } else {
+ /* Fan not auto-detected */
+ tp_features.second_fan = 0;
+ if (quirks & TPACPI_FAN_2FAN) {
+ tp_features.second_fan = 1;
+ pr_info("secondary fan support enabled\n");
+ }
+ if (quirks & TPACPI_FAN_2CTL) {
+ tp_features.second_fan = 1;
+ tp_features.second_fan_ctl = 1;
+ pr_info("secondary fan control enabled\n");
+ }
+ }
+ } else {
+ pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
+ return -ENODEV;
+ }
+ }
+
+ if (sfan_handle) {
+ /* 570, 770x-JL */
+ fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
+ } else if (fanw_handle) {
+ /* E531 */
+ fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE;
+ } else {
+ if (!gfan_handle) {
+ /* gfan without sfan means no fan control */
+ /* all other models implement TP EC 0x2f control */
+
+ if (fans_handle) {
+ /* X31, X40, X41 */
+ fan_control_access_mode =
+ TPACPI_FAN_WR_ACPI_FANS;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_SPEED |
+ TPACPI_FAN_CMD_LEVEL |
+ TPACPI_FAN_CMD_ENABLE;
+ } else {
+ fan_control_access_mode = TPACPI_FAN_WR_TPEC;
+ fan_control_commands |=
+ TPACPI_FAN_CMD_LEVEL |
+ TPACPI_FAN_CMD_ENABLE;
+ }
+ }
+ }
+
+ vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "fan is %s, modes %d, %d\n",
+ str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
+ fan_control_access_mode != TPACPI_FAN_WR_NONE),
+ fan_status_access_mode, fan_control_access_mode);
+
+ /* fan control master switch */
+ if (!fan_control_allowed) {
+ fan_control_access_mode = TPACPI_FAN_WR_NONE;
+ fan_control_commands = 0;
+ dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+ "fan control features disabled by parameter\n");
+ }
+
+ /* update fan_control_desired_level */
+ if (fan_status_access_mode != TPACPI_FAN_NONE)
+ fan_get_status_safe(NULL);
+
+ if (fan_status_access_mode == TPACPI_FAN_NONE &&
+ fan_control_access_mode == TPACPI_FAN_WR_NONE)
+ return -ENODEV;
+
+ return 0;
+}
+
+static void fan_exit(void)
+{
+ vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
+ "cancelling any pending fan watchdog tasks\n");
+
+ cancel_delayed_work(&fan_watchdog_task);
+ flush_workqueue(tpacpi_wq);
+}
+
+static void fan_suspend(void)
+{
+ int rc;
+
+ if (!fan_control_allowed)
+ return;
+
+ /* Store fan status in cache */
+ fan_control_resume_level = 0;
+ rc = fan_get_status_safe(&fan_control_resume_level);
+ if (rc)
+ pr_notice("failed to read fan level for later restore during resume: %d\n",
+ rc);
+
+ /* if it is undefined, don't attempt to restore it.
+ * KEEP THIS LAST */
+ if (tp_features.fan_ctrl_status_undef)
+ fan_control_resume_level = 0;
+}
+
+static void fan_resume(void)
+{
+ u8 current_level = 7;
+ bool do_set = false;
+ int rc;
+
+ /* DSDT *always* updates status on resume */
+ tp_features.fan_ctrl_status_undef = 0;
+
+ if (!fan_control_allowed ||
+ !fan_control_resume_level ||
+ fan_get_status_safe(¤t_level))
+ return;
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ /* never decrease fan level */
+ do_set = (fan_control_resume_level > current_level);
+ break;
+ case TPACPI_FAN_WR_ACPI_FANS:
+ case TPACPI_FAN_WR_TPEC:
+ /* never decrease fan level, scale is:
+ * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
+ *
+ * We expect the firmware to set either 7 or AUTO, but we
+ * handle FULLSPEED out of paranoia.
+ *
+ * So, we can safely only restore FULLSPEED or 7, anything
+ * else could slow the fan. Restoring AUTO is useless, at
+ * best that's exactly what the DSDT already set (it is the
+ * slower it uses).
+ *
+ * Always keep in mind that the DSDT *will* have set the
+ * fans to what the vendor supposes is the best level. We
+ * muck with it only to speed the fan up.
+ */
+ if (fan_control_resume_level != 7 &&
+ !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
+ return;
+ else
+ do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
+ (current_level != fan_control_resume_level);
+ break;
+ default:
+ return;
+ }
+ if (do_set) {
+ pr_notice("restoring fan level to 0x%02x\n",
+ fan_control_resume_level);
+ rc = fan_set_level_safe(fan_control_resume_level);
+ if (rc < 0)
+ pr_notice("failed to restore fan level: %d\n", rc);
+ }
+}
+
+static int fan_read(struct seq_file *m)
+{
+ int rc;
+ u8 status;
+ unsigned int speed = 0;
+
+ switch (fan_status_access_mode) {
+ case TPACPI_FAN_RD_ACPI_GFAN:
+ /* 570, 600e/x, 770e, 770x */
+ rc = fan_get_status_safe(&status);
+ if (rc)
+ return rc;
+
+ seq_printf(m, "status:\t\t%s\n"
+ "level:\t\t%d\n",
+ str_enabled_disabled(status), status);
+ break;
+
+ case TPACPI_FAN_RD_TPEC_NS:
+ case TPACPI_FAN_RD_TPEC:
+ case TPACPI_FAN_RD_ACPI_FANG:
+ /* all except 570, 600e/x, 770e, 770x */
+ rc = fan_get_status_safe(&status);
+ if (rc)
+ return rc;
+
+ seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status));
+
+ rc = fan_get_speed(&speed);
+ if (rc < 0)
+ return rc;
+
+ /* Check for fan speeds displayed in hexadecimal */
+ if (!ecfw_with_fan_dec_rpm)
+ seq_printf(m, "speed:\t\t%d\n", speed);
+ else
+ seq_printf(m, "speed:\t\t%x\n", speed);
+
+ if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) {
+ /*
+ * No full speed bit in NS EC
+ * EC Auto mode is set by default.
+ * No other levels settings available
+ */
+ seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto");
+ } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) {
+ if (status & TP_EC_FAN_FULLSPEED)
+ /* Disengaged mode takes precedence */
+ seq_printf(m, "level:\t\tdisengaged\n");
+ else if (status & TP_EC_FAN_AUTO)
+ seq_printf(m, "level:\t\tauto\n");
+ else
+ seq_printf(m, "level:\t\t%d\n", status);
+ }
+ break;
+
+ case TPACPI_FAN_NONE:
+ default:
+ seq_printf(m, "status:\t\tnot supported\n");
+ }
+
+ if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
+ seq_printf(m, "commands:\tlevel <level>");
+
+ switch (fan_control_access_mode) {
+ case TPACPI_FAN_WR_ACPI_SFAN:
+ seq_printf(m, " (<level> is 0-7)\n");
+ break;
+
+ default:
+ seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
+ break;
+ }
+ }
+
+ if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
+ seq_printf(m, "commands:\tenable, disable\n"
+ "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
+
+ if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
+ seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
+
+ return 0;
+}
+
+static int fan_write_cmd_level(const char *cmd, int *rc)
+{
+ int level;
+
+ if (strstarts(cmd, "level auto"))
+ level = TP_EC_FAN_AUTO;
+ else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed"))
+ level = TP_EC_FAN_FULLSPEED;
+ else if (sscanf(cmd, "level %d", &level) != 1)
+ return 0;
+
+ *rc = fan_set_level_safe(level);
+ if (*rc == -ENXIO)
+ pr_err("level command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan",
+ "set level to %d\n", level);
+
+ return 1;
+}
+
+static int fan_write_cmd_enable(const char *cmd, int *rc)
+{
+ if (!strstarts(cmd, "enable"))
+ return 0;
+
+ *rc = fan_set_enable();
+ if (*rc == -ENXIO)
+ pr_err("enable command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan", "enable\n");
+
+ return 1;
+}
+
+static int fan_write_cmd_disable(const char *cmd, int *rc)
+{
+ if (!strstarts(cmd, "disable"))
+ return 0;
+
+ *rc = fan_set_disable();
+ if (*rc == -ENXIO)
+ pr_err("disable command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan", "disable\n");
+
+ return 1;
+}
+
+static int fan_write_cmd_speed(const char *cmd, int *rc)
+{
+ int speed;
+
+ /* TODO:
+ * Support speed <low> <medium> <high> ? */
+
+ if (sscanf(cmd, "speed %d", &speed) != 1)
+ return 0;
+
+ *rc = fan_set_speed(speed);
+ if (*rc == -ENXIO)
+ pr_err("speed command accepted for unsupported access mode %d\n",
+ fan_control_access_mode);
+ else if (!*rc)
+ tpacpi_disclose_usertask("procfs fan",
+ "set speed to %d\n", speed);
+
+ return 1;
+}
+
+static int fan_write_cmd_watchdog(const char *cmd, int *rc)
+{
+ int interval;
+
+ if (sscanf(cmd, "watchdog %d", &interval) != 1)
+ return 0;
+
+ if (interval < 0 || interval > 120)
+ *rc = -EINVAL;
+ else {
+ fan_watchdog_maxinterval = interval;
+ tpacpi_disclose_usertask("procfs fan",
+ "set watchdog timer to %d\n",
+ interval);
+ }
+
+ return 1;
+}
+
+static int fan_write(char *buf)
+{
+ char *cmd;
+ int rc = 0;
+
+ while (!rc && (cmd = strsep(&buf, ","))) {
+ if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
+ fan_write_cmd_level(cmd, &rc)) &&
+ !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
+ (fan_write_cmd_enable(cmd, &rc) ||
+ fan_write_cmd_disable(cmd, &rc) ||
+ fan_write_cmd_watchdog(cmd, &rc))) &&
+ !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
+ fan_write_cmd_speed(cmd, &rc))
+ )
+ rc = -EINVAL;
+ else if (!rc)
+ fan_watchdog_reset();
+ }
+
+ return rc;
+}
+
+static struct ibm_struct fan_driver_data = {
+ .name = "fan",
+ .read = fan_read,
+ .write = fan_write,
+ .exit = fan_exit,
+ .suspend = fan_suspend,
+ .resume = fan_resume,
+};
+
+/*************************************************************************
+ * Mute LED subdriver
+ */
+
+#define TPACPI_LED_MAX 2
+
+struct tp_led_table {
+ acpi_string name;
+ int on_value;
+ int off_value;
+ int state;
+};
+
+static struct tp_led_table led_tables[TPACPI_LED_MAX] = {
+ [LED_AUDIO_MUTE] = {
+ .name = "SSMS",
+ .on_value = 1,
+ .off_value = 0,
+ },
+ [LED_AUDIO_MICMUTE] = {
+ .name = "MMTS",
+ .on_value = 2,
+ .off_value = 0,
+ },
+};
+
+static int mute_led_on_off(struct tp_led_table *t, bool state)
+{
+ acpi_handle temp;
+ int output;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
+ pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
+ return -EIO;
+ }
+
+ if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
+ state ? t->on_value : t->off_value))
+ return -EIO;
+
+ t->state = state;
+ return state;
+}
+
+static int tpacpi_led_set(int whichled, bool on)
+{
+ struct tp_led_table *t;
+
+ t = &led_tables[whichled];
+ if (t->state < 0 || t->state == on)
+ return t->state;
+ return mute_led_on_off(t, on);
+}
+
+static int tpacpi_led_mute_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF);
+}
+
+static int tpacpi_led_micmute_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF);
+}
+
+static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = {
+ [LED_AUDIO_MUTE] = {
+ .name = "platform::mute",
+ .max_brightness = 1,
+ .brightness_set_blocking = tpacpi_led_mute_set,
+ .default_trigger = "audio-mute",
+ },
+ [LED_AUDIO_MICMUTE] = {
+ .name = "platform::micmute",
+ .max_brightness = 1,
+ .brightness_set_blocking = tpacpi_led_micmute_set,
+ .default_trigger = "audio-micmute",
+ },
+};
+
+static int mute_led_init(struct ibm_init_struct *iibm)
+{
+ acpi_handle temp;
+ int i, err;
+
+ for (i = 0; i < TPACPI_LED_MAX; i++) {
+ struct tp_led_table *t = &led_tables[i];
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
+ t->state = -ENODEV;
+ continue;
+ }
+
+ err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]);
+ if (err < 0) {
+ while (i--)
+ led_classdev_unregister(&mute_led_cdev[i]);
+ return err;
+ }
+ }
+ return 0;
+}
+
+static void mute_led_exit(void)
+{
+ int i;
+
+ for (i = 0; i < TPACPI_LED_MAX; i++) {
+ led_classdev_unregister(&mute_led_cdev[i]);
+ tpacpi_led_set(i, false);
+ }
+}
+
+static void mute_led_resume(void)
+{
+ int i;
+
+ for (i = 0; i < TPACPI_LED_MAX; i++) {
+ struct tp_led_table *t = &led_tables[i];
+ if (t->state >= 0)
+ mute_led_on_off(t, t->state);
+ }
+}
+
+static struct ibm_struct mute_led_driver_data = {
+ .name = "mute_led",
+ .exit = mute_led_exit,
+ .resume = mute_led_resume,
+};
+
+/*
+ * Battery Wear Control Driver
+ * Contact: Ognjen Galic <smclt30p@gmail.com>
+ */
+
+/* Metadata */
+
+#define GET_START "BCTG"
+#define SET_START "BCCS"
+#define GET_STOP "BCSG"
+#define SET_STOP "BCSS"
+#define GET_DISCHARGE "BDSG"
+#define SET_DISCHARGE "BDSS"
+#define GET_INHIBIT "BICG"
+#define SET_INHIBIT "BICS"
+
+enum {
+ BAT_ANY = 0,
+ BAT_PRIMARY = 1,
+ BAT_SECONDARY = 2
+};
+
+enum {
+ /* Error condition bit */
+ METHOD_ERR = BIT(31),
+};
+
+enum {
+ /* This is used in the get/set helpers */
+ THRESHOLD_START,
+ THRESHOLD_STOP,
+ FORCE_DISCHARGE,
+ INHIBIT_CHARGE,
+};
+
+struct tpacpi_battery_data {
+ int charge_start;
+ int start_support;
+ int charge_stop;
+ int stop_support;
+ unsigned int charge_behaviours;
+};
+
+struct tpacpi_battery_driver_data {
+ struct tpacpi_battery_data batteries[3];
+ int individual_addressing;
+};
+
+static struct tpacpi_battery_driver_data battery_info;
+
+/* ACPI helpers/functions/probes */
+
+/*
+ * This evaluates a ACPI method call specific to the battery
+ * ACPI extension. The specifics are that an error is marked
+ * in the 32rd bit of the response, so we just check that here.
+ */
+static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
+{
+ int response;
+
+ if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
+ acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
+ return AE_ERROR;
+ }
+ if (response & METHOD_ERR) {
+ acpi_handle_err(hkey_handle,
+ "%s evaluated but flagged as error", method);
+ return AE_ERROR;
+ }
+ *ret = response;
+ return AE_OK;
+}
+
+static int tpacpi_battery_get(int what, int battery, int *ret)
+{
+ switch (what) {
+ case THRESHOLD_START:
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
+ return -ENODEV;
+
+ /* The value is in the low 8 bits of the response */
+ *ret = *ret & 0xFF;
+ return 0;
+ case THRESHOLD_STOP:
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
+ return -ENODEV;
+ /* Value is in lower 8 bits */
+ *ret = *ret & 0xFF;
+ /*
+ * On the stop value, if we return 0 that
+ * does not make any sense. 0 means Default, which
+ * means that charging stops at 100%, so we return
+ * that.
+ */
+ if (*ret == 0)
+ *ret = 100;
+ return 0;
+ case FORCE_DISCHARGE:
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery))
+ return -ENODEV;
+ /* The force discharge status is in bit 0 */
+ *ret = *ret & 0x01;
+ return 0;
+ case INHIBIT_CHARGE:
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery))
+ return -ENODEV;
+ /* The inhibit charge status is in bit 0 */
+ *ret = *ret & 0x01;
+ return 0;
+ default:
+ pr_crit("wrong parameter: %d", what);
+ return -EINVAL;
+ }
+}
+
+static int tpacpi_battery_set(int what, int battery, int value)
+{
+ int param, ret;
+ /* The first 8 bits are the value of the threshold */
+ param = value;
+ /* The battery ID is in bits 8-9, 2 bits */
+ param |= battery << 8;
+
+ switch (what) {
+ case THRESHOLD_START:
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
+ pr_err("failed to set charge threshold on battery %d",
+ battery);
+ return -ENODEV;
+ }
+ return 0;
+ case THRESHOLD_STOP:
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
+ pr_err("failed to set stop threshold: %d", battery);
+ return -ENODEV;
+ }
+ return 0;
+ case FORCE_DISCHARGE:
+ /* Force discharge is in bit 0,
+ * break on AC attach is in bit 1 (won't work on some ThinkPads),
+ * battery ID is in bits 8-9, 2 bits.
+ */
+ if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) {
+ pr_err("failed to set force discharge on %d", battery);
+ return -ENODEV;
+ }
+ return 0;
+ case INHIBIT_CHARGE:
+ /* When setting inhibit charge, we set a default value of
+ * always breaking on AC detach and the effective time is set to
+ * be permanent.
+ * The battery ID is in bits 4-5, 2 bits,
+ * the effective time is in bits 8-23, 2 bytes.
+ * A time of FFFF indicates forever.
+ */
+ param = value;
+ param |= battery << 4;
+ param |= 0xFFFF << 8;
+ if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) {
+ pr_err("failed to set inhibit charge on %d", battery);
+ return -ENODEV;
+ }
+ return 0;
+ default:
+ pr_crit("wrong parameter: %d", what);
+ return -EINVAL;
+ }
+}
+
+static int tpacpi_battery_set_validate(int what, int battery, int value)
+{
+ int ret, v;
+
+ ret = tpacpi_battery_set(what, battery, value);
+ if (ret < 0)
+ return ret;
+
+ ret = tpacpi_battery_get(what, battery, &v);
+ if (ret < 0)
+ return ret;
+
+ if (v == value)
+ return 0;
+
+ msleep(500);
+
+ ret = tpacpi_battery_get(what, battery, &v);
+ if (ret < 0)
+ return ret;
+
+ if (v == value)
+ return 0;
+
+ return -EIO;
+}
+
+static int tpacpi_battery_probe(int battery)
+{
+ int ret = 0;
+
+ memset(&battery_info.batteries[battery], 0,
+ sizeof(battery_info.batteries[battery]));
+
+ /*
+ * 1) Get the current start threshold
+ * 2) Check for support
+ * 3) Get the current stop threshold
+ * 4) Check for support
+ * 5) Get the current force discharge status
+ * 6) Check for support
+ * 7) Get the current inhibit charge status
+ * 8) Check for support
+ */
+ if (acpi_has_method(hkey_handle, GET_START)) {
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
+ pr_err("Error probing battery %d\n", battery);
+ return -ENODEV;
+ }
+ /* Individual addressing is in bit 9 */
+ if (ret & BIT(9))
+ battery_info.individual_addressing = true;
+ /* Support is marked in bit 8 */
+ if (ret & BIT(8))
+ battery_info.batteries[battery].start_support = 1;
+ else
+ return -ENODEV;
+ if (tpacpi_battery_get(THRESHOLD_START, battery,
+ &battery_info.batteries[battery].charge_start)) {
+ pr_err("Error probing battery %d\n", battery);
+ return -ENODEV;
+ }
+ }
+ if (acpi_has_method(hkey_handle, GET_STOP)) {
+ if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
+ pr_err("Error probing battery stop; %d\n", battery);
+ return -ENODEV;
+ }
+ /* Support is marked in bit 8 */
+ if (ret & BIT(8))
+ battery_info.batteries[battery].stop_support = 1;
+ else
+ return -ENODEV;
+ if (tpacpi_battery_get(THRESHOLD_STOP, battery,
+ &battery_info.batteries[battery].charge_stop)) {
+ pr_err("Error probing battery stop: %d\n", battery);
+ return -ENODEV;
+ }
+ }
+ if (acpi_has_method(hkey_handle, GET_DISCHARGE)) {
+ if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) {
+ pr_err("Error probing battery discharge; %d\n", battery);
+ return -ENODEV;
+ }
+ /* Support is marked in bit 8 */
+ if (ret & BIT(8))
+ battery_info.batteries[battery].charge_behaviours |=
+ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE);
+ }
+ if (acpi_has_method(hkey_handle, GET_INHIBIT)) {
+ if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) {
+ pr_err("Error probing battery inhibit charge; %d\n", battery);
+ return -ENODEV;
+ }
+ /* Support is marked in bit 5 */
+ if (ret & BIT(5))
+ battery_info.batteries[battery].charge_behaviours |=
+ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE);
+ }
+
+ battery_info.batteries[battery].charge_behaviours |=
+ BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO);
+
+ pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n",
+ battery,
+ battery_info.batteries[battery].charge_start,
+ battery_info.batteries[battery].charge_stop,
+ battery_info.batteries[battery].charge_behaviours);
+
+ return 0;
+}
+
+/* General helper functions */
+
+static int tpacpi_battery_get_id(const char *battery_name)
+{
+
+ if (strcmp(battery_name, "BAT0") == 0 ||
+ tp_features.battery_force_primary)
+ return BAT_PRIMARY;
+ if (strcmp(battery_name, "BAT1") == 0)
+ return BAT_SECONDARY;
+ /*
+ * If for some reason the battery is not BAT0 nor is it
+ * BAT1, we will assume it's the default, first battery,
+ * AKA primary.
+ */
+ pr_warn("unknown battery %s, assuming primary", battery_name);
+ return BAT_PRIMARY;
+}
+
+/* sysfs interface */
+
+static ssize_t tpacpi_battery_store(int what,
+ struct device *dev,
+ const char *buf, size_t count)
+{
+ struct power_supply *supply = to_power_supply(dev);
+ unsigned long value;
+ int battery, rval;
+ /*
+ * Some systems have support for more than
+ * one battery. If that is the case,
+ * tpacpi_battery_probe marked that addressing
+ * them individually is supported, so we do that
+ * based on the device struct.
+ *
+ * On systems that are not supported, we assume
+ * the primary as most of the ACPI calls fail
+ * with "Any Battery" as the parameter.
+ */
+ if (battery_info.individual_addressing)
+ /* BAT_PRIMARY or BAT_SECONDARY */
+ battery = tpacpi_battery_get_id(supply->desc->name);
+ else
+ battery = BAT_PRIMARY;
+
+ rval = kstrtoul(buf, 10, &value);
+ if (rval)
+ return rval;
+
+ switch (what) {
+ case THRESHOLD_START:
+ if (!battery_info.batteries[battery].start_support)
+ return -ENODEV;
+ /* valid values are [0, 99] */
+ if (value > 99)
+ return -EINVAL;
+ if (value > battery_info.batteries[battery].charge_stop)
+ return -EINVAL;
+ if (tpacpi_battery_set(THRESHOLD_START, battery, value))
+ return -ENODEV;
+ battery_info.batteries[battery].charge_start = value;
+ return count;
+
+ case THRESHOLD_STOP:
+ if (!battery_info.batteries[battery].stop_support)
+ return -ENODEV;
+ /* valid values are [1, 100] */
+ if (value < 1 || value > 100)
+ return -EINVAL;
+ if (value < battery_info.batteries[battery].charge_start)
+ return -EINVAL;
+ battery_info.batteries[battery].charge_stop = value;
+ /*
+ * When 100 is passed to stop, we need to flip
+ * it to 0 as that the EC understands that as
+ * "Default", which will charge to 100%
+ */
+ if (value == 100)
+ value = 0;
+ if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
+ return -EINVAL;
+ return count;
+ default:
+ pr_crit("Wrong parameter: %d", what);
+ return -EINVAL;
+ }
+ return count;
+}
+
+static ssize_t tpacpi_battery_show(int what,
+ struct device *dev,
+ char *buf)
+{
+ struct power_supply *supply = to_power_supply(dev);
+ int ret, battery;
+ /*
+ * Some systems have support for more than
+ * one battery. If that is the case,
+ * tpacpi_battery_probe marked that addressing
+ * them individually is supported, so we;
+ * based on the device struct.
+ *
+ * On systems that are not supported, we assume
+ * the primary as most of the ACPI calls fail
+ * with "Any Battery" as the parameter.
+ */
+ if (battery_info.individual_addressing)
+ /* BAT_PRIMARY or BAT_SECONDARY */
+ battery = tpacpi_battery_get_id(supply->desc->name);
+ else
+ battery = BAT_PRIMARY;
+ if (tpacpi_battery_get(what, battery, &ret))
+ return -ENODEV;
+ return sysfs_emit(buf, "%d\n", ret);
+}
+
+static ssize_t charge_control_start_threshold_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return tpacpi_battery_show(THRESHOLD_START, device, buf);
+}
+
+static ssize_t charge_control_end_threshold_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
+}
+
+static ssize_t charge_behaviour_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
+ struct power_supply *supply = to_power_supply(dev);
+ unsigned int available;
+ int ret, battery;
+
+ battery = tpacpi_battery_get_id(supply->desc->name);
+ available = battery_info.batteries[battery].charge_behaviours;
+
+ if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) {
+ if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret))
+ return -ENODEV;
+ if (ret) {
+ active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE;
+ goto out;
+ }
+ }
+
+ if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) {
+ if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret))
+ return -ENODEV;
+ if (ret) {
+ active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
+ goto out;
+ }
+ }
+
+out:
+ return power_supply_charge_behaviour_show(dev, available, active, buf);
+}
+
+static ssize_t charge_control_start_threshold_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
+}
+
+static ssize_t charge_control_end_threshold_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
+}
+
+static ssize_t charge_behaviour_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct power_supply *supply = to_power_supply(dev);
+ int selected, battery, ret = 0;
+ unsigned int available;
+
+ battery = tpacpi_battery_get_id(supply->desc->name);
+ available = battery_info.batteries[battery].charge_behaviours;
+ selected = power_supply_charge_behaviour_parse(available, buf);
+
+ if (selected < 0)
+ return selected;
+
+ switch (selected) {
+ case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
+ if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
+ ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
+ if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
+ ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0));
+ if (ret < 0)
+ return ret;
+ break;
+ case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE:
+ if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
+ ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0);
+ ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1));
+ if (ret < 0)
+ return ret;
+ break;
+ case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
+ if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
+ ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
+ ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1));
+ if (ret < 0)
+ return ret;
+ break;
+ default:
+ dev_err(dev, "Unexpected charge behaviour: %d\n", selected);
+ return -EINVAL;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(charge_control_start_threshold);
+static DEVICE_ATTR_RW(charge_control_end_threshold);
+static DEVICE_ATTR_RW(charge_behaviour);
+static struct device_attribute dev_attr_charge_start_threshold = __ATTR(
+ charge_start_threshold,
+ 0644,
+ charge_control_start_threshold_show,
+ charge_control_start_threshold_store
+);
+static struct device_attribute dev_attr_charge_stop_threshold = __ATTR(
+ charge_stop_threshold,
+ 0644,
+ charge_control_end_threshold_show,
+ charge_control_end_threshold_store
+);
+
+static struct attribute *tpacpi_battery_attrs[] = {
+ &dev_attr_charge_control_start_threshold.attr,
+ &dev_attr_charge_control_end_threshold.attr,
+ &dev_attr_charge_start_threshold.attr,
+ &dev_attr_charge_stop_threshold.attr,
+ &dev_attr_charge_behaviour.attr,
+ NULL,
+};
+
+ATTRIBUTE_GROUPS(tpacpi_battery);
+
+/* ACPI battery hooking */
+
+static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
+{
+ int batteryid = tpacpi_battery_get_id(battery->desc->name);
+
+ if (tpacpi_battery_probe(batteryid))
+ return -ENODEV;
+ if (device_add_groups(&battery->dev, tpacpi_battery_groups))
+ return -ENODEV;
+ return 0;
+}
+
+static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
+{
+ device_remove_groups(&battery->dev, tpacpi_battery_groups);
+ return 0;
+}
+
+static struct acpi_battery_hook battery_hook = {
+ .add_battery = tpacpi_battery_add,
+ .remove_battery = tpacpi_battery_remove,
+ .name = "ThinkPad Battery Extension",
+};
+
+/* Subdriver init/exit */
+
+static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
+ /*
+ * Individual addressing is broken on models that expose the
+ * primary battery as BAT1.
+ */
+ TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */
+ TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */
+ TPACPI_Q_LNV('J', '7', true), /* B5400 */
+ TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */
+ TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
+ TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
+ TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
+ TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
+};
+
+static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
+{
+ memset(&battery_info, 0, sizeof(battery_info));
+
+ tp_features.battery_force_primary = tpacpi_check_quirks(
+ battery_quirk_table,
+ ARRAY_SIZE(battery_quirk_table));
+
+ battery_hook_register(&battery_hook);
+ return 0;
+}
+
+static void tpacpi_battery_exit(void)
+{
+ battery_hook_unregister(&battery_hook);
+}
+
+static struct ibm_struct battery_driver_data = {
+ .name = "battery",
+ .exit = tpacpi_battery_exit,
+};
+
+/*************************************************************************
+ * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature
+ */
+
+static struct drm_privacy_screen *lcdshadow_dev;
+static acpi_handle lcdshadow_get_handle;
+static acpi_handle lcdshadow_set_handle;
+
+static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv,
+ enum drm_privacy_screen_status state)
+{
+ int output;
+
+ if (WARN_ON(!mutex_is_locked(&priv->lock)))
+ return -EIO;
+
+ if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state))
+ return -EIO;
+
+ priv->hw_state = priv->sw_state = state;
+ return 0;
+}
+
+static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv)
+{
+ int output;
+
+ if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
+ return;
+
+ priv->hw_state = priv->sw_state = output & 0x1;
+}
+
+static const struct drm_privacy_screen_ops lcdshadow_ops = {
+ .set_sw_state = lcdshadow_set_sw_state,
+ .get_hw_state = lcdshadow_get_hw_state,
+};
+
+static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm)
+{
+ acpi_status status1, status2;
+ int output;
+
+ status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle);
+ status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle);
+ if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2))
+ return 0;
+
+ if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
+ return -EIO;
+
+ if (!(output & 0x10000))
+ return 0;
+
+ lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev,
+ &lcdshadow_ops, NULL);
+ if (IS_ERR(lcdshadow_dev))
+ return PTR_ERR(lcdshadow_dev);
+
+ return 0;
+}
+
+static void lcdshadow_exit(void)
+{
+ drm_privacy_screen_unregister(lcdshadow_dev);
+}
+
+static void lcdshadow_resume(void)
+{
+ if (!lcdshadow_dev)
+ return;
+
+ mutex_lock(&lcdshadow_dev->lock);
+ lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state);
+ mutex_unlock(&lcdshadow_dev->lock);
+}
+
+static int lcdshadow_read(struct seq_file *m)
+{
+ if (!lcdshadow_dev) {
+ seq_puts(m, "status:\t\tnot supported\n");
+ } else {
+ seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state);
+ seq_puts(m, "commands:\t0, 1\n");
+ }
+
+ return 0;
+}
+
+static int lcdshadow_write(char *buf)
+{
+ char *cmd;
+ int res, state = -EINVAL;
+
+ if (!lcdshadow_dev)
+ return -ENODEV;
+
+ while ((cmd = strsep(&buf, ","))) {
+ res = kstrtoint(cmd, 10, &state);
+ if (res < 0)
+ return res;
+ }
+
+ if (state >= 2 || state < 0)
+ return -EINVAL;
+
+ mutex_lock(&lcdshadow_dev->lock);
+ res = lcdshadow_set_sw_state(lcdshadow_dev, state);
+ mutex_unlock(&lcdshadow_dev->lock);
+
+ drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
+
+ return res;
+}
+
+static struct ibm_struct lcdshadow_driver_data = {
+ .name = "lcdshadow",
+ .exit = lcdshadow_exit,
+ .resume = lcdshadow_resume,
+ .read = lcdshadow_read,
+ .write = lcdshadow_write,
+};
+
+/*************************************************************************
+ * Thinkpad sensor interfaces
+ */
+
+#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
+#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
+#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
+#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
+
+#define DYTC_CMD_GET 2 /* To get current IC function and mode */
+#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */
+
+#define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */
+#define PALMSENSOR_ON_BIT 1 /* psensor status */
+
+static bool has_palmsensor;
+static bool has_lapsensor;
+static bool palm_state;
+static bool lap_state;
+static int dytc_version;
+
+static int dytc_command(int command, int *output)
+{
+ acpi_handle dytc_handle;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) {
+ /* Platform doesn't support DYTC */
+ return -ENODEV;
+ }
+ if (!acpi_evalf(dytc_handle, output, NULL, "dd", command))
+ return -EIO;
+ return 0;
+}
+
+static int lapsensor_get(bool *present, bool *state)
+{
+ int output, err;
+
+ *present = false;
+ err = dytc_command(DYTC_CMD_GET, &output);
+ if (err)
+ return err;
+
+ *present = true; /*If we get his far, we have lapmode support*/
+ *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false;
+ return 0;
+}
+
+static int palmsensor_get(bool *present, bool *state)
+{
+ acpi_handle psensor_handle;
+ int output;
+
+ *present = false;
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle)))
+ return -ENODEV;
+ if (!acpi_evalf(psensor_handle, &output, NULL, "d"))
+ return -EIO;
+
+ *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false;
+ *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false;
+ return 0;
+}
+
+static void lapsensor_refresh(void)
+{
+ bool state;
+ int err;
+
+ if (has_lapsensor) {
+ err = lapsensor_get(&has_lapsensor, &state);
+ if (err)
+ return;
+ if (lap_state != state) {
+ lap_state = state;
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode");
+ }
+ }
+}
+
+static void palmsensor_refresh(void)
+{
+ bool state;
+ int err;
+
+ if (has_palmsensor) {
+ err = palmsensor_get(&has_palmsensor, &state);
+ if (err)
+ return;
+ if (palm_state != state) {
+ palm_state = state;
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor");
+ }
+ }
+}
+
+static ssize_t dytc_lapmode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ if (has_lapsensor)
+ return sysfs_emit(buf, "%d\n", lap_state);
+ return sysfs_emit(buf, "\n");
+}
+static DEVICE_ATTR_RO(dytc_lapmode);
+
+static ssize_t palmsensor_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ if (has_palmsensor)
+ return sysfs_emit(buf, "%d\n", palm_state);
+ return sysfs_emit(buf, "\n");
+}
+static DEVICE_ATTR_RO(palmsensor);
+
+static struct attribute *proxsensor_attributes[] = {
+ &dev_attr_dytc_lapmode.attr,
+ &dev_attr_palmsensor.attr,
+ NULL
+};
+
+static umode_t proxsensor_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ if (attr == &dev_attr_dytc_lapmode.attr) {
+ /*
+ * Platforms before DYTC version 5 claim to have a lap sensor,
+ * but it doesn't work, so we ignore them.
+ */
+ if (!has_lapsensor || dytc_version < 5)
+ return 0;
+ } else if (attr == &dev_attr_palmsensor.attr) {
+ if (!has_palmsensor)
+ return 0;
+ }
+
+ return attr->mode;
+}
+
+static const struct attribute_group proxsensor_attr_group = {
+ .is_visible = proxsensor_attr_is_visible,
+ .attrs = proxsensor_attributes,
+};
+
+static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm)
+{
+ int palm_err, lap_err;
+
+ palm_err = palmsensor_get(&has_palmsensor, &palm_state);
+ lap_err = lapsensor_get(&has_lapsensor, &lap_state);
+ /* If support isn't available for both devices return -ENODEV */
+ if ((palm_err == -ENODEV) && (lap_err == -ENODEV))
+ return -ENODEV;
+ /* Otherwise, if there was an error return it */
+ if (palm_err && (palm_err != -ENODEV))
+ return palm_err;
+ if (lap_err && (lap_err != -ENODEV))
+ return lap_err;
+
+ return 0;
+}
+
+static struct ibm_struct proxsensor_driver_data = {
+ .name = "proximity-sensor",
+};
+
+/*************************************************************************
+ * DYTC Platform Profile interface
+ */
+
+#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
+#define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */
+#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
+
+#define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */
+#define DYTC_FC_MMC 27 /* MMC Mode supported */
+#define DYTC_FC_PSC 29 /* PSC Mode supported */
+#define DYTC_FC_AMT 31 /* AMT mode supported */
+
+#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
+#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
+
+#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
+#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
+#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
+
+#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
+#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
+#define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */
+#define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */
+#define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */
+
+#define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */
+#define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */
+
+#define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */
+#define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */
+#define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */
+#define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */
+
+#define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */
+#define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */
+#define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */
+
+#define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */
+#define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */
+#define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */
+
+#define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */
+#define DYTC_ERR_SUCCESS 1 /* CMD completed successful */
+
+#define DYTC_SET_COMMAND(function, mode, on) \
+ (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
+ (mode) << DYTC_SET_MODE_BIT | \
+ (on) << DYTC_SET_VALID_BIT)
+
+#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0)
+#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1)
+static int dytc_control_amt(bool enable);
+static bool dytc_amt_active;
+
+static enum platform_profile_option dytc_current_profile;
+static atomic_t dytc_ignore_event = ATOMIC_INIT(0);
+static DEFINE_MUTEX(dytc_mutex);
+static int dytc_capabilities;
+static bool dytc_mmc_get_available;
+static int profile_force;
+
+static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER;
+static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE;
+static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM;
+
+static int convert_dytc_to_profile(int funcmode, int dytcmode,
+ enum platform_profile_option *profile)
+{
+ switch (funcmode) {
+ case DYTC_FUNCTION_MMC:
+ switch (dytcmode) {
+ case DYTC_MODE_MMC_LOWPOWER:
+ *profile = PLATFORM_PROFILE_LOW_POWER;
+ break;
+ case DYTC_MODE_MMC_DEFAULT:
+ case DYTC_MODE_MMC_BALANCE:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ break;
+ case DYTC_MODE_MMC_PERFORM:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ break;
+ default: /* Unknown mode */
+ return -EINVAL;
+ }
+ return 0;
+ case DYTC_FUNCTION_PSC:
+ if (dytcmode == platform_psc_profile_lowpower)
+ *profile = PLATFORM_PROFILE_LOW_POWER;
+ else if (dytcmode == platform_psc_profile_balanced)
+ *profile = PLATFORM_PROFILE_BALANCED;
+ else if (dytcmode == platform_psc_profile_performance)
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ else
+ return -EINVAL;
+
+ return 0;
+ case DYTC_FUNCTION_AMT:
+ /* For now return balanced. It's the closest we have to 'auto' */
+ *profile = PLATFORM_PROFILE_BALANCED;
+ return 0;
+ default:
+ /* Unknown function */
+ pr_debug("unknown function 0x%x\n", funcmode);
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
+{
+ switch (profile) {
+ case PLATFORM_PROFILE_LOW_POWER:
+ if (dytc_capabilities & BIT(DYTC_FC_MMC))
+ *perfmode = DYTC_MODE_MMC_LOWPOWER;
+ else if (dytc_capabilities & BIT(DYTC_FC_PSC))
+ *perfmode = platform_psc_profile_lowpower;
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ if (dytc_capabilities & BIT(DYTC_FC_MMC))
+ *perfmode = DYTC_MODE_MMC_BALANCE;
+ else if (dytc_capabilities & BIT(DYTC_FC_PSC))
+ *perfmode = platform_psc_profile_balanced;
+ break;
+ case PLATFORM_PROFILE_PERFORMANCE:
+ if (dytc_capabilities & BIT(DYTC_FC_MMC))
+ *perfmode = DYTC_MODE_MMC_PERFORM;
+ else if (dytc_capabilities & BIT(DYTC_FC_PSC))
+ *perfmode = platform_psc_profile_performance;
+ break;
+ default: /* Unknown profile */
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+/*
+ * dytc_profile_get: Function to register with platform_profile
+ * handler. Returns current platform profile.
+ */
+static int dytc_profile_get(struct device *dev,
+ enum platform_profile_option *profile)
+{
+ *profile = dytc_current_profile;
+ return 0;
+}
+
+static int dytc_control_amt(bool enable)
+{
+ int dummy;
+ int err;
+ int cmd;
+
+ if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) {
+ pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n");
+ return -ENODEV;
+ }
+
+ if (enable)
+ cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable);
+ else
+ cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable);
+
+ pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd);
+ err = dytc_command(cmd, &dummy);
+ if (err)
+ return err;
+ dytc_amt_active = enable;
+ return 0;
+}
+
+/*
+ * Helper function - check if we are in CQL mode and if we are
+ * - disable CQL,
+ * - run the command
+ * - enable CQL
+ * If not in CQL mode, just run the command
+ */
+static int dytc_cql_command(int command, int *output)
+{
+ int err, cmd_err, dummy;
+ int cur_funcmode;
+
+ /* Determine if we are in CQL mode. This alters the commands we do */
+ err = dytc_command(DYTC_CMD_GET, output);
+ if (err)
+ return err;
+
+ cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
+ /* Check if we're OK to return immediately */
+ if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL))
+ return 0;
+
+ if (cur_funcmode == DYTC_FUNCTION_CQL) {
+ atomic_inc(&dytc_ignore_event);
+ err = dytc_command(DYTC_DISABLE_CQL, &dummy);
+ if (err)
+ return err;
+ }
+
+ cmd_err = dytc_command(command, output);
+ /* Check return condition after we've restored CQL state */
+
+ if (cur_funcmode == DYTC_FUNCTION_CQL) {
+ err = dytc_command(DYTC_ENABLE_CQL, &dummy);
+ if (err)
+ return err;
+ }
+ return cmd_err;
+}
+
+/*
+ * dytc_profile_set: Function to register with platform_profile
+ * handler. Sets current platform profile.
+ */
+static int dytc_profile_set(struct device *dev,
+ enum platform_profile_option profile)
+{
+ int perfmode;
+ int output;
+ int err;
+
+ err = mutex_lock_interruptible(&dytc_mutex);
+ if (err)
+ return err;
+
+ err = convert_profile_to_dytc(profile, &perfmode);
+ if (err)
+ goto unlock;
+
+ if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
+ if (profile == PLATFORM_PROFILE_BALANCED) {
+ /*
+ * To get back to balanced mode we need to issue a reset command.
+ * Note we still need to disable CQL mode before hand and re-enable
+ * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays
+ * stuck at 0 for aprox. 30 minutes.
+ */
+ err = dytc_cql_command(DYTC_CMD_RESET, &output);
+ if (err)
+ goto unlock;
+ } else {
+ /* Determine if we are in CQL mode. This alters the commands we do */
+ err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
+ &output);
+ if (err)
+ goto unlock;
+ }
+ } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
+ err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output);
+ if (err)
+ goto unlock;
+
+ /* system supports AMT, activate it when on balanced */
+ if (dytc_capabilities & BIT(DYTC_FC_AMT))
+ dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED);
+ }
+ /* Success - update current profile */
+ dytc_current_profile = profile;
+unlock:
+ mutex_unlock(&dytc_mutex);
+ return err;
+}
+
+static int dytc_profile_probe(void *drvdata, unsigned long *choices)
+{
+ set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
+
+ return 0;
+}
+
+static const struct platform_profile_ops dytc_profile_ops = {
+ .probe = dytc_profile_probe,
+ .profile_get = dytc_profile_get,
+ .profile_set = dytc_profile_set,
+};
+
+static void dytc_profile_refresh(void)
+{
+ enum platform_profile_option profile;
+ int output = 0, err = 0;
+ int perfmode, funcmode = 0;
+
+ mutex_lock(&dytc_mutex);
+ if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
+ if (dytc_mmc_get_available)
+ err = dytc_command(DYTC_CMD_MMC_GET, &output);
+ else
+ err = dytc_cql_command(DYTC_CMD_GET, &output);
+ funcmode = DYTC_FUNCTION_MMC;
+ } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
+ err = dytc_command(DYTC_CMD_GET, &output);
+ /* Check if we are PSC mode, or have AMT enabled */
+ funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF;
+ } else { /* Unknown profile mode */
+ err = -ENODEV;
+ }
+ mutex_unlock(&dytc_mutex);
+ if (err)
+ return;
+
+ perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
+ err = convert_dytc_to_profile(funcmode, perfmode, &profile);
+ if (!err && profile != dytc_current_profile) {
+ dytc_current_profile = profile;
+ platform_profile_notify(tpacpi_pprof);
+ }
+}
+
+static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
+{
+ int err, output;
+
+ err = dytc_command(DYTC_CMD_QUERY, &output);
+ if (err)
+ return err;
+
+ if (output & BIT(DYTC_QUERY_ENABLE_BIT))
+ dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
+
+ dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version);
+ /* Check DYTC is enabled and supports mode setting */
+ if (dytc_version < 5)
+ return -ENODEV;
+
+ /* Check what capabilities are supported */
+ err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities);
+ if (err)
+ return err;
+
+ /* Check if user wants to override the profile selection */
+ if (profile_force) {
+ switch (profile_force) {
+ case -1:
+ dytc_capabilities = 0;
+ break;
+ case 1:
+ dytc_capabilities = BIT(DYTC_FC_MMC);
+ break;
+ case 2:
+ dytc_capabilities = BIT(DYTC_FC_PSC);
+ break;
+ }
+ pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities);
+ }
+ if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */
+ pr_debug("MMC is supported\n");
+ /*
+ * Check if MMC_GET functionality available
+ * Version > 6 and return success from MMC_GET command
+ */
+ dytc_mmc_get_available = false;
+ if (dytc_version >= 6) {
+ err = dytc_command(DYTC_CMD_MMC_GET, &output);
+ if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS))
+ dytc_mmc_get_available = true;
+ }
+ } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */
+ pr_debug("PSC is supported\n");
+ if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */
+ platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER;
+ platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE;
+ platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM;
+ }
+ } else {
+ dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n");
+ return -ENODEV;
+ }
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "DYTC version %d: thermal mode available\n", dytc_version);
+
+ /* Create platform_profile structure and register */
+ tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile",
+ NULL, &dytc_profile_ops);
+ /*
+ * If for some reason platform_profiles aren't enabled
+ * don't quit terminally.
+ */
+ if (IS_ERR(tpacpi_pprof))
+ return -ENODEV;
+
+ /* Ensure initial values are correct */
+ dytc_profile_refresh();
+
+ /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */
+ if (dytc_capabilities & BIT(DYTC_FC_PSC))
+ dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
+
+ return 0;
+}
+
+static void dytc_profile_exit(void)
+{
+ if (!IS_ERR_OR_NULL(tpacpi_pprof))
+ platform_profile_remove(tpacpi_pprof);
+}
+
+static struct ibm_struct dytc_profile_driver_data = {
+ .name = "dytc-profile",
+ .exit = dytc_profile_exit,
+};
+
+/*************************************************************************
+ * Keyboard language interface
+ */
+
+struct keyboard_lang_data {
+ const char *lang_str;
+ int lang_code;
+};
+
+static const struct keyboard_lang_data keyboard_lang_data[] = {
+ {"be", 0x080c},
+ {"cz", 0x0405},
+ {"da", 0x0406},
+ {"de", 0x0c07},
+ {"en", 0x0000},
+ {"es", 0x2c0a},
+ {"et", 0x0425},
+ {"fr", 0x040c},
+ {"fr-ch", 0x100c},
+ {"hu", 0x040e},
+ {"it", 0x0410},
+ {"jp", 0x0411},
+ {"nl", 0x0413},
+ {"nn", 0x0414},
+ {"pl", 0x0415},
+ {"pt", 0x0816},
+ {"sl", 0x041b},
+ {"sv", 0x081d},
+ {"tr", 0x041f},
+};
+
+static int set_keyboard_lang_command(int command)
+{
+ acpi_handle sskl_handle;
+ int output;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) {
+ /* Platform doesn't support SSKL */
+ return -ENODEV;
+ }
+
+ if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command))
+ return -EIO;
+
+ return 0;
+}
+
+static int get_keyboard_lang(int *output)
+{
+ acpi_handle gskl_handle;
+ int kbd_lang;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) {
+ /* Platform doesn't support GSKL */
+ return -ENODEV;
+ }
+
+ if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000))
+ return -EIO;
+
+ /*
+ * METHOD_ERR gets returned on devices where there are no special (e.g. '=',
+ * '(' and ')') keys which use layout dependent key-press emulation.
+ */
+ if (kbd_lang & METHOD_ERR)
+ return -ENODEV;
+
+ *output = kbd_lang;
+
+ return 0;
+}
+
+/* sysfs keyboard language entry */
+static ssize_t keyboard_lang_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int output, err, i, len = 0;
+
+ err = get_keyboard_lang(&output);
+ if (err)
+ return err;
+
+ for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
+ if (i)
+ len += sysfs_emit_at(buf, len, "%s", " ");
+
+ if (output == keyboard_lang_data[i].lang_code) {
+ len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str);
+ } else {
+ len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str);
+ }
+ }
+ len += sysfs_emit_at(buf, len, "\n");
+
+ return len;
+}
+
+static ssize_t keyboard_lang_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int err, i;
+ bool lang_found = false;
+ int lang_code = 0;
+
+ for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
+ if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) {
+ lang_code = keyboard_lang_data[i].lang_code;
+ lang_found = true;
+ break;
+ }
+ }
+
+ if (lang_found) {
+ lang_code = lang_code | 1 << 24;
+
+ /* Set language code */
+ err = set_keyboard_lang_command(lang_code);
+ if (err)
+ return err;
+ } else {
+ dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n");
+ return -EINVAL;
+ }
+
+ tpacpi_disclose_usertask(attr->attr.name,
+ "keyboard language is set to %s\n", buf);
+
+ sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang");
+
+ return count;
+}
+static DEVICE_ATTR_RW(keyboard_lang);
+
+static struct attribute *kbdlang_attributes[] = {
+ &dev_attr_keyboard_lang.attr,
+ NULL
+};
+
+static umode_t kbdlang_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return tp_features.kbd_lang ? attr->mode : 0;
+}
+
+static const struct attribute_group kbdlang_attr_group = {
+ .is_visible = kbdlang_attr_is_visible,
+ .attrs = kbdlang_attributes,
+};
+
+static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm)
+{
+ int err, output;
+
+ err = get_keyboard_lang(&output);
+ tp_features.kbd_lang = !err;
+ return err;
+}
+
+static struct ibm_struct kbdlang_driver_data = {
+ .name = "kbdlang",
+};
+
+/*************************************************************************
+ * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
+ * and WLAN feature.
+ */
+#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000
+#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4)
+#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8)
+static bool has_antennatype;
+static int wwan_antennatype;
+
+static int dprc_command(int command, int *output)
+{
+ acpi_handle dprc_handle;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) {
+ /* Platform doesn't support DPRC */
+ return -ENODEV;
+ }
+
+ if (!acpi_evalf(dprc_handle, output, NULL, "dd", command))
+ return -EIO;
+
+ /*
+ * METHOD_ERR gets returned on devices where few commands are not supported
+ * for example command to get WWAN Antenna type command is not supported on
+ * some devices.
+ */
+ if (*output & METHOD_ERR)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int get_wwan_antenna(int *wwan_antennatype)
+{
+ int output, err;
+
+ /* Get current Antenna type */
+ err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output);
+ if (err)
+ return err;
+
+ if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT)
+ *wwan_antennatype = 1;
+ else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT)
+ *wwan_antennatype = 2;
+ else
+ return -ENODEV;
+
+ return 0;
+}
+
+/* sysfs wwan antenna type entry */
+static ssize_t wwan_antenna_type_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ switch (wwan_antennatype) {
+ case 1:
+ return sysfs_emit(buf, "type a\n");
+ case 2:
+ return sysfs_emit(buf, "type b\n");
+ default:
+ return -ENODATA;
+ }
+}
+static DEVICE_ATTR_RO(wwan_antenna_type);
+
+static struct attribute *dprc_attributes[] = {
+ &dev_attr_wwan_antenna_type.attr,
+ NULL
+};
+
+static umode_t dprc_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return has_antennatype ? attr->mode : 0;
+}
+
+static const struct attribute_group dprc_attr_group = {
+ .is_visible = dprc_attr_is_visible,
+ .attrs = dprc_attributes,
+};
+
+static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
+{
+ int err;
+
+ err = get_wwan_antenna(&wwan_antennatype);
+ if (err)
+ return err;
+
+ has_antennatype = true;
+ return 0;
+}
+
+static struct ibm_struct dprc_driver_data = {
+ .name = "dprc",
+};
+
+/*
+ * Auxmac
+ *
+ * This auxiliary mac address is enabled in the bios through the
+ * MAC Address Pass-through feature. In most cases, there are three
+ * possibilities: Internal Mac, Second Mac, and disabled.
+ *
+ */
+
+#define AUXMAC_LEN 12
+#define AUXMAC_START 9
+#define AUXMAC_STRLEN 22
+#define AUXMAC_BEGIN_MARKER 8
+#define AUXMAC_END_MARKER 21
+
+static char auxmac[AUXMAC_LEN + 1];
+
+static int auxmac_init(struct ibm_init_struct *iibm)
+{
+ acpi_status status;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+
+ status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer);
+
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ obj = buffer.pointer;
+
+ if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) {
+ pr_info("Invalid buffer for MAC address pass-through.\n");
+ goto auxmacinvalid;
+ }
+
+ if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' ||
+ obj->string.pointer[AUXMAC_END_MARKER] != '#') {
+ pr_info("Invalid header for MAC address pass-through.\n");
+ goto auxmacinvalid;
+ }
+
+ if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0)
+ strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac));
+ else
+ strscpy(auxmac, "disabled", sizeof(auxmac));
+
+free:
+ kfree(obj);
+ return 0;
+
+auxmacinvalid:
+ strscpy(auxmac, "unavailable", sizeof(auxmac));
+ goto free;
+}
+
+static struct ibm_struct auxmac_data = {
+ .name = "auxmac",
+};
+
+static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac);
+
+static umode_t auxmac_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return auxmac[0] == 0 ? 0 : attr->mode;
+}
+
+static struct attribute *auxmac_attributes[] = {
+ &dev_attr_auxmac.attr.attr,
+ NULL
+};
+
+static const struct attribute_group auxmac_attr_group = {
+ .is_visible = auxmac_attr_is_visible,
+ .attrs = auxmac_attributes,
+};
+
+/* --------------------------------------------------------------------- */
+
+static struct attribute *tpacpi_driver_attributes[] = {
+ &driver_attr_debug_level.attr,
+ &driver_attr_version.attr,
+ &driver_attr_interface_version.attr,
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ &driver_attr_wlsw_emulstate.attr,
+ &driver_attr_bluetooth_emulstate.attr,
+ &driver_attr_wwan_emulstate.attr,
+ &driver_attr_uwb_emulstate.attr,
+#endif
+ NULL
+};
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+static umode_t tpacpi_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ if (attr == &driver_attr_wlsw_emulstate.attr) {
+ if (!dbg_wlswemul)
+ return 0;
+ } else if (attr == &driver_attr_bluetooth_emulstate.attr) {
+ if (!dbg_bluetoothemul)
+ return 0;
+ } else if (attr == &driver_attr_wwan_emulstate.attr) {
+ if (!dbg_wwanemul)
+ return 0;
+ } else if (attr == &driver_attr_uwb_emulstate.attr) {
+ if (!dbg_uwbemul)
+ return 0;
+ }
+
+ return attr->mode;
+}
+#endif
+
+static const struct attribute_group tpacpi_driver_attr_group = {
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+ .is_visible = tpacpi_attr_is_visible,
+#endif
+ .attrs = tpacpi_driver_attributes,
+};
+
+static const struct attribute_group *tpacpi_driver_groups[] = {
+ &tpacpi_driver_attr_group,
+ NULL,
+};
+
+static const struct attribute_group *tpacpi_groups[] = {
+ &adaptive_kbd_attr_group,
+ &hotkey_attr_group,
+ &bluetooth_attr_group,
+ &wan_attr_group,
+ &cmos_attr_group,
+ &proxsensor_attr_group,
+ &kbdlang_attr_group,
+ &dprc_attr_group,
+ &auxmac_attr_group,
+ NULL,
+};
+
+static const struct attribute_group *tpacpi_hwmon_groups[] = {
+ &thermal_attr_group,
+ &temp_label_attr_group,
+ &fan_attr_group,
+ NULL,
+};
+
+static const struct attribute_group *tpacpi_hwmon_driver_groups[] = {
+ &fan_driver_attr_group,
+ NULL,
+};
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Platform drivers
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+static struct platform_driver tpacpi_pdriver = {
+ .driver = {
+ .name = TPACPI_DRVR_NAME,
+ .pm = &tpacpi_pm,
+ .groups = tpacpi_driver_groups,
+ .dev_groups = tpacpi_groups,
+ },
+ .shutdown = tpacpi_shutdown_handler,
+};
+
+static struct platform_driver tpacpi_hwmon_pdriver = {
+ .driver = {
+ .name = TPACPI_HWMON_DRVR_NAME,
+ .groups = tpacpi_hwmon_driver_groups,
+ },
+};
+
+/****************************************************************************
+ ****************************************************************************
+ *
+ * Infrastructure
+ *
+ ****************************************************************************
+ ****************************************************************************/
+
+/*
+ * HKEY event callout for other subdrivers go here
+ * (yes, it is ugly, but it is quick, safe, and gets the job done
+ */
+static bool tpacpi_driver_event(const unsigned int hkey_event)
+{
+ int camera_shutter_state;
+
+ switch (hkey_event) {
+ case TP_HKEY_EV_BRGHT_UP:
+ case TP_HKEY_EV_BRGHT_DOWN:
+ if (ibm_backlight_device)
+ tpacpi_brightness_notify_change();
+ /*
+ * Key press events are suppressed by default hotkey_user_mask
+ * and should still be reported if explicitly requested.
+ */
+ return false;
+ case TP_HKEY_EV_VOL_UP:
+ case TP_HKEY_EV_VOL_DOWN:
+ case TP_HKEY_EV_VOL_MUTE:
+ if (alsa_card)
+ volume_alsa_notify_change();
+
+ /* Key events are suppressed by default hotkey_user_mask */
+ return false;
+ case TP_HKEY_EV_KBD_LIGHT:
+ if (tp_features.kbdlight) {
+ enum led_brightness brightness;
+
+ mutex_lock(&kbdlight_mutex);
+
+ /*
+ * Check the brightness actually changed, setting the brightness
+ * through kbdlight_set_level() also triggers this event.
+ */
+ brightness = kbdlight_sysfs_get(NULL);
+ if (kbdlight_brightness != brightness) {
+ kbdlight_brightness = brightness;
+ led_classdev_notify_brightness_hw_changed(
+ &tpacpi_led_kbdlight.led_classdev, brightness);
+ }
+
+ mutex_unlock(&kbdlight_mutex);
+ }
+ /* Key events are suppressed by default hotkey_user_mask */
+ return false;
+ case TP_HKEY_EV_DFR_CHANGE_ROW:
+ adaptive_keyboard_change_row();
+ return true;
+ case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW:
+ adaptive_keyboard_s_quickview_row();
+ return true;
+ case TP_HKEY_EV_THM_CSM_COMPLETED:
+ lapsensor_refresh();
+ /* If we are already accessing DYTC then skip dytc update */
+ if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
+ dytc_profile_refresh();
+
+ return true;
+ case TP_HKEY_EV_PRIVACYGUARD_TOGGLE:
+ if (lcdshadow_dev) {
+ enum drm_privacy_screen_status old_hw_state;
+ bool changed;
+
+ mutex_lock(&lcdshadow_dev->lock);
+ old_hw_state = lcdshadow_dev->hw_state;
+ lcdshadow_get_hw_state(lcdshadow_dev);
+ changed = lcdshadow_dev->hw_state != old_hw_state;
+ mutex_unlock(&lcdshadow_dev->lock);
+
+ if (changed)
+ drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
+ }
+ return true;
+ case TP_HKEY_EV_AMT_TOGGLE:
+ /* If we're enabling AMT we need to force balanced mode */
+ if (!dytc_amt_active)
+ /* This will also set AMT mode enabled */
+ dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
+ else
+ dytc_control_amt(!dytc_amt_active);
+
+ return true;
+ case TP_HKEY_EV_CAMERASHUTTER_TOGGLE:
+ camera_shutter_state = get_camera_shutter();
+ if (camera_shutter_state < 0) {
+ pr_err("Error retrieving camera shutter state after shutter event\n");
+ return true;
+ }
+ mutex_lock(&tpacpi_inputdev_send_mutex);
+
+ input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state);
+ input_sync(tpacpi_inputdev);
+
+ mutex_unlock(&tpacpi_inputdev_send_mutex);
+ return true;
+ case TP_HKEY_EV_DOUBLETAP_TOGGLE:
+ tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap;
+ return true;
+ case TP_HKEY_EV_PROFILE_TOGGLE:
+ case TP_HKEY_EV_PROFILE_TOGGLE2:
+ platform_profile_cycle();
+ return true;
+ }
+
+ return false;
+}
+
+/* --------------------------------------------------------------------- */
+
+/* /proc support */
+static struct proc_dir_entry *proc_dir;
+
+/*
+ * Module and infrastructure proble, init and exit handling
+ */
+
+static bool force_load;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUG
+static const char * __init str_supported(int is_supported)
+{
+ static char text_unsupported[] __initdata = "not supported";
+
+ return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
+}
+#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
+
+static void ibm_exit(struct ibm_struct *ibm)
+{
+ dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
+
+ list_del_init(&ibm->all_drivers);
+
+ if (ibm->flags.acpi_notify_installed) {
+ dbg_printk(TPACPI_DBG_EXIT,
+ "%s: acpi_remove_notify_handler\n", ibm->name);
+ BUG_ON(!ibm->acpi);
+ acpi_remove_notify_handler(*ibm->acpi->handle,
+ ibm->acpi->type,
+ dispatch_acpi_notify);
+ ibm->flags.acpi_notify_installed = 0;
+ }
+
+ if (ibm->flags.proc_created) {
+ dbg_printk(TPACPI_DBG_EXIT,
+ "%s: remove_proc_entry\n", ibm->name);
+ remove_proc_entry(ibm->name, proc_dir);
+ ibm->flags.proc_created = 0;
+ }
+
+ if (ibm->flags.acpi_driver_registered) {
+ dbg_printk(TPACPI_DBG_EXIT,
+ "%s: acpi_bus_unregister_driver\n", ibm->name);
+ BUG_ON(!ibm->acpi);
+ acpi_bus_unregister_driver(ibm->acpi->driver);
+ kfree(ibm->acpi->driver);
+ ibm->acpi->driver = NULL;
+ ibm->flags.acpi_driver_registered = 0;
+ }
+
+ if (ibm->flags.init_called && ibm->exit) {
+ ibm->exit();
+ ibm->flags.init_called = 0;
+ }
+
+ dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
+}
+
+static int __init ibm_init(struct ibm_init_struct *iibm)
+{
+ int ret;
+ struct ibm_struct *ibm = iibm->data;
+ struct proc_dir_entry *entry;
+
+ BUG_ON(ibm == NULL);
+
+ INIT_LIST_HEAD(&ibm->all_drivers);
+
+ if (ibm->flags.experimental && !experimental)
+ return 0;
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "probing for %s\n", ibm->name);
+
+ if (iibm->init) {
+ ret = iibm->init(iibm);
+ if (ret > 0 || ret == -ENODEV)
+ return 0; /* subdriver functionality not available */
+ if (ret)
+ return ret;
+
+ ibm->flags.init_called = 1;
+ }
+
+ if (ibm->acpi) {
+ if (ibm->acpi->hid) {
+ ret = register_tpacpi_subdriver(ibm);
+ if (ret)
+ goto err_out;
+ }
+
+ if (ibm->acpi->notify) {
+ ret = setup_acpi_notify(ibm);
+ if (ret == -ENODEV) {
+ pr_notice("disabling subdriver %s\n",
+ ibm->name);
+ ret = 0;
+ goto err_out;
+ }
+ if (ret < 0)
+ goto err_out;
+ }
+ }
+
+ dbg_printk(TPACPI_DBG_INIT,
+ "%s installed\n", ibm->name);
+
+ if (ibm->read) {
+ umode_t mode = iibm->base_procfs_mode;
+
+ if (!mode)
+ mode = S_IRUGO;
+ if (ibm->write)
+ mode |= S_IWUSR;
+ entry = proc_create_data(ibm->name, mode, proc_dir,
+ &dispatch_proc_ops, ibm);
+ if (!entry) {
+ pr_err("unable to create proc entry %s\n", ibm->name);
+ ret = -ENODEV;
+ goto err_out;
+ }
+ ibm->flags.proc_created = 1;
+ }
+
+ list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
+
+ return 0;
+
+err_out:
+ dbg_printk(TPACPI_DBG_INIT,
+ "%s: at error exit path with result %d\n",
+ ibm->name, ret);
+
+ ibm_exit(ibm);
+ return (ret < 0) ? ret : 0;
+}
+
+/* Probing */
+
+static char __init tpacpi_parse_fw_id(const char * const s,
+ u32 *model, u16 *release)
+{
+ int i;
+
+ if (!s || strlen(s) < 8)
+ goto invalid;
+
+ for (i = 0; i < 8; i++)
+ if (!((s[i] >= '0' && s[i] <= '9') ||
+ (s[i] >= 'A' && s[i] <= 'Z')))
+ goto invalid;
+
+ /*
+ * Most models: xxyTkkWW (#.##c)
+ * Ancient 570/600 and -SL lacks (#.##c)
+ */
+ if (s[3] == 'T' || s[3] == 'N') {
+ *model = TPID(s[0], s[1]);
+ *release = TPVER(s[4], s[5]);
+ return s[2];
+
+ /* New models: xxxyTkkW (#.##c); T550 and some others */
+ } else if (s[4] == 'T' || s[4] == 'N') {
+ *model = TPID3(s[0], s[1], s[2]);
+ *release = TPVER(s[5], s[6]);
+ return s[3];
+ }
+
+invalid:
+ return '\0';
+}
+
+#define EC_FW_STRING_LEN 18
+
+static void find_new_ec_fwstr(const struct dmi_header *dm, void *private)
+{
+ char *ec_fw_string = (char *) private;
+ const char *dmi_data = (const char *)dm;
+ /*
+ * ThinkPad Embedded Controller Program Table on newer models
+ *
+ * Offset | Name | Width | Description
+ * ----------------------------------------------------
+ * 0x00 | Type | BYTE | 0x8C
+ * 0x01 | Length | BYTE |
+ * 0x02 | Handle | WORD | Varies
+ * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO"
+ * 0x0A | OEM struct offset | BYTE | 0x0B
+ * 0x0B | OEM struct number | BYTE | 0x07, for this structure
+ * 0x0C | OEM struct revision | BYTE | 0x01, for this format
+ * 0x0D | ECP version ID | STR ID |
+ * 0x0E | ECP release date | STR ID |
+ */
+
+ /* Return if data structure not match */
+ if (dm->type != 140 || dm->length < 0x0F ||
+ memcmp(dmi_data + 4, "LENOVO", 6) != 0 ||
+ dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 ||
+ dmi_data[0x0C] != 0x01)
+ return;
+
+ /* fwstr is the first 8byte string */
+ BUILD_BUG_ON(EC_FW_STRING_LEN <= 8);
+ memcpy(ec_fw_string, dmi_data + 0x0F, 8);
+}
+
+/* returns 0 - probe ok, or < 0 - probe error.
+ * Probe ok doesn't mean thinkpad found.
+ * On error, kfree() cleanup on tp->* is not performed, caller must do it */
+static int __must_check __init get_thinkpad_model_data(
+ struct thinkpad_id_data *tp)
+{
+ const struct dmi_device *dev = NULL;
+ char ec_fw_string[EC_FW_STRING_LEN] = {0};
+ char const *s;
+ char t;
+
+ if (!tp)
+ return -EINVAL;
+
+ memset(tp, 0, sizeof(*tp));
+
+ if (dmi_name_in_vendors("IBM"))
+ tp->vendor = PCI_VENDOR_ID_IBM;
+ else if (dmi_name_in_vendors("LENOVO"))
+ tp->vendor = PCI_VENDOR_ID_LENOVO;
+ else if (dmi_name_in_vendors("NEC"))
+ tp->vendor = PCI_VENDOR_ID_LENOVO;
+ else
+ return 0;
+
+ s = dmi_get_system_info(DMI_BIOS_VERSION);
+ tp->bios_version_str = kstrdup(s, GFP_KERNEL);
+ if (s && !tp->bios_version_str)
+ return -ENOMEM;
+
+ /* Really ancient ThinkPad 240X will fail this, which is fine */
+ t = tpacpi_parse_fw_id(tp->bios_version_str,
+ &tp->bios_model, &tp->bios_release);
+ if (t != 'E' && t != 'C')
+ return 0;
+
+ /*
+ * ThinkPad T23 or newer, A31 or newer, R50e or newer,
+ * X32 or newer, all Z series; Some models must have an
+ * up-to-date BIOS or they will not be detected.
+ *
+ * See https://thinkwiki.org/wiki/List_of_DMI_IDs
+ */
+ while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
+ if (sscanf(dev->name,
+ "IBM ThinkPad Embedded Controller -[%17c",
+ ec_fw_string) == 1) {
+ ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
+ ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
+ break;
+ }
+ }
+
+ /* Newer ThinkPads have different EC program info table */
+ if (!ec_fw_string[0])
+ dmi_walk(find_new_ec_fwstr, &ec_fw_string);
+
+ if (ec_fw_string[0]) {
+ tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
+ if (!tp->ec_version_str)
+ return -ENOMEM;
+
+ t = tpacpi_parse_fw_id(ec_fw_string,
+ &tp->ec_model, &tp->ec_release);
+ if (t != 'H') {
+ pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
+ ec_fw_string);
+ pr_notice("please report this to %s\n", TPACPI_MAIL);
+ }
+ }
+
+ s = dmi_get_system_info(DMI_PRODUCT_VERSION);
+ if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
+ tp->model_str = kstrdup(s, GFP_KERNEL);
+ if (!tp->model_str)
+ return -ENOMEM;
+ } else {
+ s = dmi_get_system_info(DMI_BIOS_VENDOR);
+ if (s && !(strncasecmp(s, "Lenovo", 6))) {
+ tp->model_str = kstrdup(s, GFP_KERNEL);
+ if (!tp->model_str)
+ return -ENOMEM;
+ }
+ }
+
+ s = dmi_get_system_info(DMI_PRODUCT_NAME);
+ tp->nummodel_str = kstrdup(s, GFP_KERNEL);
+ if (s && !tp->nummodel_str)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int __init probe_for_thinkpad(void)
+{
+ int is_thinkpad;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ /* It would be dangerous to run the driver in this case */
+ if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
+ return -ENODEV;
+
+ /*
+ * Non-ancient models have better DMI tagging, but very old models
+ * don't. tpacpi_is_fw_known() is a cheat to help in that case.
+ */
+ is_thinkpad = (thinkpad_id.model_str != NULL) ||
+ (thinkpad_id.ec_model != 0) ||
+ tpacpi_is_fw_known();
+
+ /* The EC handler is required */
+ tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
+ if (!ec_handle) {
+ if (is_thinkpad)
+ pr_err("Not yet supported ThinkPad detected!\n");
+ return -ENODEV;
+ }
+
+ if (!is_thinkpad && !force_load)
+ return -ENODEV;
+
+ return 0;
+}
+
+static void __init thinkpad_acpi_init_banner(void)
+{
+ pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
+ pr_info("%s\n", TPACPI_URL);
+
+ pr_info("ThinkPad BIOS %s, EC %s\n",
+ (thinkpad_id.bios_version_str) ?
+ thinkpad_id.bios_version_str : "unknown",
+ (thinkpad_id.ec_version_str) ?
+ thinkpad_id.ec_version_str : "unknown");
+
+ BUG_ON(!thinkpad_id.vendor);
+
+ if (thinkpad_id.model_str)
+ pr_info("%s %s, model %s\n",
+ (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
+ "IBM" : ((thinkpad_id.vendor ==
+ PCI_VENDOR_ID_LENOVO) ?
+ "Lenovo" : "Unknown vendor"),
+ thinkpad_id.model_str,
+ (thinkpad_id.nummodel_str) ?
+ thinkpad_id.nummodel_str : "unknown");
+}
+
+/* Module init, exit, parameters */
+
+static struct ibm_init_struct ibms_init[] __initdata = {
+ {
+ .data = &thinkpad_acpi_driver_data,
+ },
+ {
+ .init = hotkey_init,
+ .data = &hotkey_driver_data,
+ },
+ {
+ .init = bluetooth_init,
+ .data = &bluetooth_driver_data,
+ },
+ {
+ .init = wan_init,
+ .data = &wan_driver_data,
+ },
+ {
+ .init = uwb_init,
+ .data = &uwb_driver_data,
+ },
+#ifdef CONFIG_THINKPAD_ACPI_VIDEO
+ {
+ .init = video_init,
+ .base_procfs_mode = S_IRUSR,
+ .data = &video_driver_data,
+ },
+#endif
+ {
+ .init = kbdlight_init,
+ .data = &kbdlight_driver_data,
+ },
+ {
+ .init = light_init,
+ .data = &light_driver_data,
+ },
+ {
+ .init = cmos_init,
+ .data = &cmos_driver_data,
+ },
+ {
+ .init = led_init,
+ .data = &led_driver_data,
+ },
+ {
+ .init = beep_init,
+ .data = &beep_driver_data,
+ },
+ {
+ .init = thermal_init,
+ .data = &thermal_driver_data,
+ },
+ {
+ .init = brightness_init,
+ .data = &brightness_driver_data,
+ },
+ {
+ .init = volume_init,
+ .data = &volume_driver_data,
+ },
+ {
+ .init = fan_init,
+ .data = &fan_driver_data,
+ },
+ {
+ .init = mute_led_init,
+ .data = &mute_led_driver_data,
+ },
+ {
+ .init = tpacpi_battery_init,
+ .data = &battery_driver_data,
+ },
+ {
+ .init = tpacpi_lcdshadow_init,
+ .data = &lcdshadow_driver_data,
+ },
+ {
+ .init = tpacpi_proxsensor_init,
+ .data = &proxsensor_driver_data,
+ },
+ {
+ .init = tpacpi_dytc_profile_init,
+ .data = &dytc_profile_driver_data,
+ },
+ {
+ .init = tpacpi_kbdlang_init,
+ .data = &kbdlang_driver_data,
+ },
+ {
+ .init = tpacpi_dprc_init,
+ .data = &dprc_driver_data,
+ },
+ {
+ .init = auxmac_init,
+ .data = &auxmac_data,
+ },
+};
+
+static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
+{
+ unsigned int i;
+ struct ibm_struct *ibm;
+
+ if (!kp || !kp->name || !val)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
+ ibm = ibms_init[i].data;
+ if (!ibm || !ibm->name)
+ continue;
+
+ if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
+ if (strlen(val) > sizeof(ibms_init[i].param) - 1)
+ return -ENOSPC;
+ strscpy(ibms_init[i].param, val);
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+module_param(experimental, int, 0444);
+MODULE_PARM_DESC(experimental,
+ "Enables experimental features when non-zero");
+
+module_param_named(debug, dbg_level, uint, 0);
+MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
+
+module_param(force_load, bool, 0444);
+MODULE_PARM_DESC(force_load,
+ "Attempts to load the driver even on a mis-identified ThinkPad when true");
+
+module_param_named(fan_control, fan_control_allowed, bool, 0444);
+MODULE_PARM_DESC(fan_control,
+ "Enables setting fan parameters features when true");
+
+module_param_named(brightness_mode, brightness_mode, uint, 0444);
+MODULE_PARM_DESC(brightness_mode,
+ "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
+
+module_param(brightness_enable, uint, 0444);
+MODULE_PARM_DESC(brightness_enable,
+ "Enables backlight control when 1, disables when 0");
+
+#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
+module_param_named(volume_mode, volume_mode, uint, 0444);
+MODULE_PARM_DESC(volume_mode,
+ "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
+
+module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
+MODULE_PARM_DESC(volume_capabilities,
+ "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only");
+
+module_param_named(volume_control, volume_control_allowed, bool, 0444);
+MODULE_PARM_DESC(volume_control,
+ "Enables software override for the console audio control when true");
+
+module_param_named(software_mute, software_mute_requested, bool, 0444);
+MODULE_PARM_DESC(software_mute,
+ "Request full software mute control");
+
+/* ALSA module API parameters */
+module_param_named(index, alsa_index, int, 0444);
+MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
+module_param_named(id, alsa_id, charp, 0444);
+MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
+module_param_named(enable, alsa_enable, bool, 0444);
+MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
+#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
+
+/* The module parameter can't be read back, that's why 0 is used here */
+#define TPACPI_PARAM(feature) \
+ module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
+ MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
+
+TPACPI_PARAM(hotkey);
+TPACPI_PARAM(bluetooth);
+TPACPI_PARAM(video);
+TPACPI_PARAM(light);
+TPACPI_PARAM(cmos);
+TPACPI_PARAM(led);
+TPACPI_PARAM(beep);
+TPACPI_PARAM(brightness);
+TPACPI_PARAM(volume);
+TPACPI_PARAM(fan);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+module_param(dbg_wlswemul, uint, 0444);
+MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
+module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
+MODULE_PARM_DESC(wlsw_state,
+ "Initial state of the emulated WLSW switch");
+
+module_param(dbg_bluetoothemul, uint, 0444);
+MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
+module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
+MODULE_PARM_DESC(bluetooth_state,
+ "Initial state of the emulated bluetooth switch");
+
+module_param(dbg_wwanemul, uint, 0444);
+MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
+module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
+MODULE_PARM_DESC(wwan_state,
+ "Initial state of the emulated WWAN switch");
+
+module_param(dbg_uwbemul, uint, 0444);
+MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
+module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
+MODULE_PARM_DESC(uwb_state,
+ "Initial state of the emulated UWB switch");
+#endif
+
+module_param(profile_force, int, 0444);
+MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC");
+
+static void thinkpad_acpi_module_exit(void)
+{
+ tpacpi_lifecycle = TPACPI_LIFE_EXITING;
+
+ if (tpacpi_sensors_pdev) {
+ platform_driver_unregister(&tpacpi_hwmon_pdriver);
+ platform_device_unregister(tpacpi_sensors_pdev);
+ }
+
+ if (tp_features.platform_drv_registered)
+ platform_driver_unregister(&tpacpi_pdriver);
+ if (tpacpi_pdev)
+ platform_device_unregister(tpacpi_pdev);
+
+ if (proc_dir)
+ remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
+ if (tpacpi_wq)
+ destroy_workqueue(tpacpi_wq);
+
+ kfree(thinkpad_id.bios_version_str);
+ kfree(thinkpad_id.ec_version_str);
+ kfree(thinkpad_id.model_str);
+ kfree(thinkpad_id.nummodel_str);
+}
+
+static void tpacpi_subdrivers_release(void *data)
+{
+ struct ibm_struct *ibm, *itmp;
+
+ list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers)
+ ibm_exit(ibm);
+
+ dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
+}
+
+static int __init tpacpi_pdriver_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = devm_mutex_init(&pdev->dev, &tpacpi_inputdev_send_mutex);
+ if (ret)
+ return ret;
+
+ tpacpi_inputdev = devm_input_allocate_device(&pdev->dev);
+ if (!tpacpi_inputdev)
+ return -ENOMEM;
+
+ tpacpi_inputdev->name = "ThinkPad Extra Buttons";
+ tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
+ tpacpi_inputdev->id.bustype = BUS_HOST;
+ tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
+ tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
+ tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
+ tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
+
+ /* Init subdriver dependencies */
+ tpacpi_detect_brightness_capabilities();
+
+ /* Init subdrivers */
+ for (unsigned int i = 0; i < ARRAY_SIZE(ibms_init); i++) {
+ ret = ibm_init(&ibms_init[i]);
+ if (ret >= 0 && *ibms_init[i].param)
+ ret = ibms_init[i].data->write(ibms_init[i].param);
+ if (ret < 0) {
+ tpacpi_subdrivers_release(NULL);
+ return ret;
+ }
+ }
+
+ ret = devm_add_action_or_reset(&pdev->dev, tpacpi_subdrivers_release, NULL);
+ if (ret)
+ return ret;
+
+ ret = input_register_device(tpacpi_inputdev);
+ if (ret < 0)
+ pr_err("unable to register input device\n");
+
+ return ret;
+}
+
+static int __init tpacpi_hwmon_pdriver_probe(struct platform_device *pdev)
+{
+ tpacpi_hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, TPACPI_NAME,
+ NULL, tpacpi_hwmon_groups);
+ if (IS_ERR(tpacpi_hwmon))
+ pr_err("unable to register hwmon device\n");
+
+ return PTR_ERR_OR_ZERO(tpacpi_hwmon);
+}
+
+static int __init thinkpad_acpi_module_init(void)
+{
+ const struct dmi_system_id *dmi_id;
+ int ret;
+ acpi_object_type obj_type;
+
+ tpacpi_lifecycle = TPACPI_LIFE_INIT;
+
+ /* Driver-level probe */
+
+ ret = get_thinkpad_model_data(&thinkpad_id);
+ if (ret) {
+ pr_err("unable to get DMI data: %d\n", ret);
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ ret = probe_for_thinkpad();
+ if (ret) {
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+
+ /* Driver initialization */
+
+ thinkpad_acpi_init_banner();
+ tpacpi_check_outdated_fw();
+
+ TPACPI_ACPIHANDLE_INIT(ecrd);
+ TPACPI_ACPIHANDLE_INIT(ecwr);
+
+ /*
+ * Quirk: in some models (e.g. X380 Yoga), an object named ECRD
+ * exists, but it is a register, not a method.
+ */
+ if (ecrd_handle) {
+ acpi_get_type(ecrd_handle, &obj_type);
+ if (obj_type != ACPI_TYPE_METHOD)
+ ecrd_handle = NULL;
+ }
+ if (ecwr_handle) {
+ acpi_get_type(ecwr_handle, &obj_type);
+ if (obj_type != ACPI_TYPE_METHOD)
+ ecwr_handle = NULL;
+ }
+
+ tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
+ if (!tpacpi_wq) {
+ thinkpad_acpi_module_exit();
+ return -ENOMEM;
+ }
+
+ proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
+ if (!proc_dir) {
+ pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
+ thinkpad_acpi_module_exit();
+ return -ENODEV;
+ }
+
+ dmi_id = dmi_first_match(fwbug_list);
+ if (dmi_id)
+ tp_features.quirks = dmi_id->driver_data;
+
+ /* Device initialization */
+ tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE,
+ NULL, 0);
+ if (IS_ERR(tpacpi_pdev)) {
+ ret = PTR_ERR(tpacpi_pdev);
+ tpacpi_pdev = NULL;
+ pr_err("unable to register platform device\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+
+ ret = platform_driver_probe(&tpacpi_pdriver, tpacpi_pdriver_probe);
+ if (ret) {
+ pr_err("unable to register main platform driver\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+ tp_features.platform_drv_registered = 1;
+
+ tpacpi_sensors_pdev = platform_create_bundle(&tpacpi_hwmon_pdriver,
+ tpacpi_hwmon_pdriver_probe,
+ NULL, 0, NULL, 0);
+ if (IS_ERR(tpacpi_sensors_pdev)) {
+ ret = PTR_ERR(tpacpi_sensors_pdev);
+ tpacpi_sensors_pdev = NULL;
+ pr_err("unable to register hwmon platform device/driver bundle\n");
+ thinkpad_acpi_module_exit();
+ return ret;
+ }
+
+ tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
+
+ return 0;
+}
+
+MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
+
+/*
+ * This will autoload the driver in almost every ThinkPad
+ * in widespread use.
+ *
+ * Only _VERY_ old models, like the 240, 240x and 570 lack
+ * the HKEY event interface.
+ */
+MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
+
+/*
+ * DMI matching for module autoloading
+ *
+ * See https://thinkwiki.org/wiki/List_of_DMI_IDs
+ * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
+ *
+ * Only models listed in thinkwiki will be supported, so add yours
+ * if it is not there yet.
+ */
+#define IBM_BIOS_MODULE_ALIAS(__type) \
+ MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
+
+/* Ancient thinkpad BIOSes have to be identified by
+ * BIOS type or model number, and there are far less
+ * BIOS types than model numbers... */
+IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
+
+MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
+MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
+MODULE_DESCRIPTION(TPACPI_DESC);
+MODULE_VERSION(TPACPI_VERSION);
+MODULE_LICENSE("GPL");
+
+module_init(thinkpad_acpi_module_init);
+module_exit(thinkpad_acpi_module_exit);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Lenovo WMI Camera Button Driver
+ *
+ * Author: Ai Chao <aichao@kylinos.cn>
+ * Copyright (C) 2024 KylinSoft Corporation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/wmi.h>
+#include <linux/cleanup.h>
+
+#define WMI_LENOVO_CAMERABUTTON_EVENT_GUID "50C76F1F-D8E4-D895-0A3D-62F4EA400013"
+
+struct lenovo_wmi_priv {
+ struct input_dev *idev;
+ struct mutex notify_lock; /* lenovo WMI camera button notify lock */
+};
+
+enum {
+ SW_CAMERA_OFF = 0,
+ SW_CAMERA_ON = 1,
+};
+
+static int camera_shutter_input_setup(struct wmi_device *wdev, u8 camera_mode)
+{
+ struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
+ int err;
+
+ priv->idev = input_allocate_device();
+ if (!priv->idev)
+ return -ENOMEM;
+
+ priv->idev->name = "Lenovo WMI Camera Button";
+ priv->idev->phys = "wmi/input0";
+ priv->idev->id.bustype = BUS_HOST;
+ priv->idev->dev.parent = &wdev->dev;
+
+ input_set_capability(priv->idev, EV_SW, SW_CAMERA_LENS_COVER);
+
+ input_report_switch(priv->idev, SW_CAMERA_LENS_COVER,
+ camera_mode == SW_CAMERA_ON ? 0 : 1);
+ input_sync(priv->idev);
+
+ err = input_register_device(priv->idev);
+ if (err) {
+ input_free_device(priv->idev);
+ priv->idev = NULL;
+ }
+
+ return err;
+}
+
+static void lenovo_wmi_notify(struct wmi_device *wdev, union acpi_object *obj)
+{
+ struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
+ u8 camera_mode;
+
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ dev_err(&wdev->dev, "Bad response type %u\n", obj->type);
+ return;
+ }
+
+ if (obj->buffer.length != 1) {
+ dev_err(&wdev->dev, "Invalid buffer length %u\n", obj->buffer.length);
+ return;
+ }
+
+ /*
+ * obj->buffer.pointer[0] is camera mode:
+ * 0 camera close
+ * 1 camera open
+ */
+ camera_mode = obj->buffer.pointer[0];
+ if (camera_mode > SW_CAMERA_ON) {
+ dev_err(&wdev->dev, "Unknown camera mode %u\n", camera_mode);
+ return;
+ }
+
+ guard(mutex)(&priv->notify_lock);
+
+ if (!priv->idev) {
+ if (camera_shutter_input_setup(wdev, camera_mode))
+ dev_warn(&wdev->dev, "Failed to register input device\n");
+ return;
+ }
+
+ if (camera_mode == SW_CAMERA_ON)
+ input_report_switch(priv->idev, SW_CAMERA_LENS_COVER, 0);
+ else
+ input_report_switch(priv->idev, SW_CAMERA_LENS_COVER, 1);
+ input_sync(priv->idev);
+}
+
+static int lenovo_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ struct lenovo_wmi_priv *priv;
+
+ priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev_set_drvdata(&wdev->dev, priv);
+
+ mutex_init(&priv->notify_lock);
+
+ return 0;
+}
+
+static void lenovo_wmi_remove(struct wmi_device *wdev)
+{
+ struct lenovo_wmi_priv *priv = dev_get_drvdata(&wdev->dev);
+
+ if (priv->idev)
+ input_unregister_device(priv->idev);
+
+ mutex_destroy(&priv->notify_lock);
+}
+
+static const struct wmi_device_id lenovo_wmi_id_table[] = {
+ { .guid_string = WMI_LENOVO_CAMERABUTTON_EVENT_GUID },
+ { }
+};
+MODULE_DEVICE_TABLE(wmi, lenovo_wmi_id_table);
+
+static struct wmi_driver lenovo_wmi_driver = {
+ .driver = {
+ .name = "lenovo-wmi-camera",
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .id_table = lenovo_wmi_id_table,
+ .no_singleton = true,
+ .probe = lenovo_wmi_probe,
+ .notify = lenovo_wmi_notify,
+ .remove = lenovo_wmi_remove,
+};
+module_wmi_driver(lenovo_wmi_driver);
+
+MODULE_AUTHOR("Ai Chao <aichao@kylinos.cn>");
+MODULE_DESCRIPTION("Lenovo WMI Camera Button Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Lenovo Super Hotkey Utility WMI extras driver for Ideapad laptop
+ *
+ * Copyright (C) 2025 Lenovo
+ */
+
+#include <linux/cleanup.h>
+#include <linux/dev_printk.h>
+#include <linux/device.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/wmi.h>
+
+/* Lenovo Super Hotkey WMI GUIDs */
+#define LUD_WMI_METHOD_GUID "CE6C0974-0407-4F50-88BA-4FC3B6559AD8"
+
+/* Lenovo Utility Data WMI method_id */
+#define WMI_LUD_GET_SUPPORT 1
+#define WMI_LUD_SET_FEATURE 2
+
+#define WMI_LUD_GET_MICMUTE_LED_VER 20
+#define WMI_LUD_GET_AUDIOMUTE_LED_VER 26
+
+#define WMI_LUD_SUPPORT_MICMUTE_LED_VER 25
+#define WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER 27
+
+/* Input parameters to mute/unmute audio LED and Mic LED */
+struct wmi_led_args {
+ u8 id;
+ u8 subid;
+ u16 value;
+};
+
+/* Values of input parameters to SetFeature of audio LED and Mic LED */
+enum hotkey_set_feature {
+ MIC_MUTE_LED_ON = 1,
+ MIC_MUTE_LED_OFF = 2,
+ AUDIO_MUTE_LED_ON = 4,
+ AUDIO_MUTE_LED_OFF = 5,
+};
+
+#define LSH_ACPI_LED_MAX 2
+
+struct lenovo_super_hotkey_wmi_private {
+ struct led_classdev cdev[LSH_ACPI_LED_MAX];
+ struct wmi_device *led_wdev;
+};
+
+enum mute_led_type {
+ MIC_MUTE,
+ AUDIO_MUTE,
+};
+
+static int lsh_wmi_mute_led_set(enum mute_led_type led_type, struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+
+{
+ struct lenovo_super_hotkey_wmi_private *wpriv = container_of(led_cdev,
+ struct lenovo_super_hotkey_wmi_private, cdev[led_type]);
+ struct wmi_led_args led_arg = {0, 0, 0};
+ struct acpi_buffer input;
+ acpi_status status;
+
+ switch (led_type) {
+ case MIC_MUTE:
+ led_arg.id = brightness == LED_ON ? MIC_MUTE_LED_ON : MIC_MUTE_LED_OFF;
+ break;
+ case AUDIO_MUTE:
+ led_arg.id = brightness == LED_ON ? AUDIO_MUTE_LED_ON : AUDIO_MUTE_LED_OFF;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ input.length = sizeof(led_arg);
+ input.pointer = &led_arg;
+ status = wmidev_evaluate_method(wpriv->led_wdev, 0, WMI_LUD_SET_FEATURE, &input, NULL);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ return 0;
+}
+
+static int lsh_wmi_audiomute_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+
+{
+ return lsh_wmi_mute_led_set(AUDIO_MUTE, led_cdev, brightness);
+}
+
+static int lsh_wmi_micmute_led_set(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ return lsh_wmi_mute_led_set(MIC_MUTE, led_cdev, brightness);
+}
+
+static int lenovo_super_hotkey_wmi_led_init(enum mute_led_type led_type, struct device *dev)
+{
+ struct lenovo_super_hotkey_wmi_private *wpriv = dev_get_drvdata(dev);
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer input;
+ int led_version, err = 0;
+ unsigned int wmiarg;
+ acpi_status status;
+
+ switch (led_type) {
+ case MIC_MUTE:
+ wmiarg = WMI_LUD_GET_MICMUTE_LED_VER;
+ break;
+ case AUDIO_MUTE:
+ wmiarg = WMI_LUD_GET_AUDIOMUTE_LED_VER;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ input.length = sizeof(wmiarg);
+ input.pointer = &wmiarg;
+ status = wmidev_evaluate_method(wpriv->led_wdev, 0, WMI_LUD_GET_SUPPORT, &input, &output);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ union acpi_object *obj __free(kfree) = output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ led_version = obj->integer.value;
+ else
+ return -EIO;
+
+ wpriv->cdev[led_type].max_brightness = LED_ON;
+ wpriv->cdev[led_type].flags = LED_CORE_SUSPENDRESUME;
+
+ switch (led_type) {
+ case MIC_MUTE:
+ if (led_version != WMI_LUD_SUPPORT_MICMUTE_LED_VER)
+ return -EIO;
+
+ wpriv->cdev[led_type].name = "platform::micmute";
+ wpriv->cdev[led_type].brightness_set_blocking = &lsh_wmi_micmute_led_set;
+ wpriv->cdev[led_type].default_trigger = "audio-micmute";
+ break;
+ case AUDIO_MUTE:
+ if (led_version != WMI_LUD_SUPPORT_AUDIOMUTE_LED_VER)
+ return -EIO;
+
+ wpriv->cdev[led_type].name = "platform::mute";
+ wpriv->cdev[led_type].brightness_set_blocking = &lsh_wmi_audiomute_led_set;
+ wpriv->cdev[led_type].default_trigger = "audio-mute";
+ break;
+ default:
+ dev_err(dev, "Unknown LED type %d\n", led_type);
+ return -EINVAL;
+ }
+
+ err = devm_led_classdev_register(dev, &wpriv->cdev[led_type]);
+ if (err < 0) {
+ dev_err(dev, "Could not register mute LED %d : %d\n", led_type, err);
+ return err;
+ }
+ return 0;
+}
+
+static int lenovo_super_hotkey_wmi_leds_setup(struct device *dev)
+{
+ int err;
+
+ err = lenovo_super_hotkey_wmi_led_init(MIC_MUTE, dev);
+ if (err)
+ return err;
+
+ err = lenovo_super_hotkey_wmi_led_init(AUDIO_MUTE, dev);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int lenovo_super_hotkey_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ struct lenovo_super_hotkey_wmi_private *wpriv;
+
+ wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL);
+ if (!wpriv)
+ return -ENOMEM;
+
+ dev_set_drvdata(&wdev->dev, wpriv);
+ wpriv->led_wdev = wdev;
+ return lenovo_super_hotkey_wmi_leds_setup(&wdev->dev);
+}
+
+static const struct wmi_device_id lenovo_super_hotkey_wmi_id_table[] = {
+ { LUD_WMI_METHOD_GUID, NULL }, /* Utility data */
+ { }
+};
+
+MODULE_DEVICE_TABLE(wmi, lenovo_super_hotkey_wmi_id_table);
+
+static struct wmi_driver lenovo_wmi_hotkey_utilities_driver = {
+ .driver = {
+ .name = "lenovo_wmi_hotkey_utilities",
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS
+ },
+ .id_table = lenovo_super_hotkey_wmi_id_table,
+ .probe = lenovo_super_hotkey_wmi_probe,
+ .no_singleton = true,
+};
+
+module_wmi_driver(lenovo_wmi_hotkey_utilities_driver);
+
+MODULE_AUTHOR("Jackie Dong <dongeg1@lenovo.com>");
+MODULE_DESCRIPTION("Lenovo Super Hotkey Utility WMI extras driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * lenovo-ymc.c - Lenovo Yoga Mode Control driver
+ *
+ * Copyright © 2022 Gergo Koteles <soyer@irl.hu>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/wmi.h>
+#include "ideapad-laptop.h"
+
+#define LENOVO_YMC_EVENT_GUID "06129D99-6083-4164-81AD-F092F9D773A6"
+#define LENOVO_YMC_QUERY_GUID "09B0EE6E-C3FD-4243-8DA1-7911FF80BB8C"
+
+#define LENOVO_YMC_QUERY_INSTANCE 0
+#define LENOVO_YMC_QUERY_METHOD 0x01
+
+static bool force;
+module_param(force, bool, 0444);
+MODULE_PARM_DESC(force, "Force loading on boards without a convertible DMI chassis-type");
+
+static const struct dmi_system_id allowed_chasis_types_dmi_table[] = {
+ {
+ .matches = {
+ DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "31" /* Convertible */),
+ },
+ },
+ {
+ .matches = {
+ DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "32" /* Detachable */),
+ },
+ },
+ { }
+};
+
+struct lenovo_ymc_private {
+ struct input_dev *input_dev;
+};
+
+static const struct key_entry lenovo_ymc_keymap[] = {
+ /* Ignore the uninitialized state */
+ { KE_IGNORE, 0x00 },
+ /* Laptop */
+ { KE_SW, 0x01, { .sw = { SW_TABLET_MODE, 0 } } },
+ /* Tablet */
+ { KE_SW, 0x02, { .sw = { SW_TABLET_MODE, 1 } } },
+ /* Drawing Board */
+ { KE_SW, 0x03, { .sw = { SW_TABLET_MODE, 1 } } },
+ /* Tent */
+ { KE_SW, 0x04, { .sw = { SW_TABLET_MODE, 1 } } },
+ { KE_END },
+};
+
+static void lenovo_ymc_notify(struct wmi_device *wdev, union acpi_object *data)
+{
+ struct lenovo_ymc_private *priv = dev_get_drvdata(&wdev->dev);
+ u32 input_val = 0;
+ struct acpi_buffer input = { sizeof(input_val), &input_val };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+ int code;
+
+ status = wmi_evaluate_method(LENOVO_YMC_QUERY_GUID,
+ LENOVO_YMC_QUERY_INSTANCE,
+ LENOVO_YMC_QUERY_METHOD,
+ &input, &output);
+
+ if (ACPI_FAILURE(status)) {
+ dev_warn(&wdev->dev,
+ "Failed to evaluate query method: %s\n",
+ acpi_format_exception(status));
+ return;
+ }
+
+ obj = output.pointer;
+
+ if (obj->type != ACPI_TYPE_INTEGER) {
+ dev_warn(&wdev->dev,
+ "WMI event data is not an integer\n");
+ goto free_obj;
+ }
+ code = obj->integer.value;
+
+ if (!sparse_keymap_report_event(priv->input_dev, code, 1, true))
+ dev_warn(&wdev->dev, "Unknown key %d pressed\n", code);
+
+free_obj:
+ kfree(obj);
+ ideapad_laptop_call_notifier(IDEAPAD_LAPTOP_YMC_EVENT, &code);
+}
+
+static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx)
+{
+ struct lenovo_ymc_private *priv;
+ struct input_dev *input_dev;
+ int err;
+
+ if (!dmi_check_system(allowed_chasis_types_dmi_table)) {
+ if (force)
+ dev_info(&wdev->dev, "Force loading Lenovo YMC support\n");
+ else
+ return -ENODEV;
+ }
+
+ priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ input_dev = devm_input_allocate_device(&wdev->dev);
+ if (!input_dev)
+ return -ENOMEM;
+
+ input_dev->name = "Lenovo Yoga Tablet Mode Control switch";
+ input_dev->phys = LENOVO_YMC_EVENT_GUID "/input0";
+ input_dev->id.bustype = BUS_HOST;
+ input_dev->dev.parent = &wdev->dev;
+ err = sparse_keymap_setup(input_dev, lenovo_ymc_keymap, NULL);
+ if (err) {
+ dev_err(&wdev->dev,
+ "Could not set up input device keymap: %d\n", err);
+ return err;
+ }
+
+ err = input_register_device(input_dev);
+ if (err) {
+ dev_err(&wdev->dev,
+ "Could not register input device: %d\n", err);
+ return err;
+ }
+
+ priv->input_dev = input_dev;
+ dev_set_drvdata(&wdev->dev, priv);
+
+ /* Report the state for the first time on probe */
+ lenovo_ymc_notify(wdev, NULL);
+ return 0;
+}
+
+static const struct wmi_device_id lenovo_ymc_wmi_id_table[] = {
+ { .guid_string = LENOVO_YMC_EVENT_GUID },
+ { }
+};
+MODULE_DEVICE_TABLE(wmi, lenovo_ymc_wmi_id_table);
+
+static struct wmi_driver lenovo_ymc_driver = {
+ .driver = {
+ .name = "lenovo-ymc",
+ },
+ .id_table = lenovo_ymc_wmi_id_table,
+ .probe = lenovo_ymc_probe,
+ .notify = lenovo_ymc_notify,
+};
+
+module_wmi_driver(lenovo_ymc_driver);
+
+MODULE_AUTHOR("Gergo Koteles <soyer@irl.hu>");
+MODULE_DESCRIPTION("Lenovo Yoga Mode Control driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("IDEAPAD_LAPTOP");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Support for the custom fast charging protocol found on the Lenovo Yoga
+ * Tablet 2 1380F / 1380L models.
+ *
+ * Copyright (C) 2024 Hans de Goede <hansg@kernel.org>
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/extcon.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/machine.h>
+#include <linux/platform_device.h>
+#include <linux/serdev.h>
+#include <linux/time.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+#include "../serdev_helpers.h"
+
+#define YT2_1380_FC_PDEV_NAME "lenovo-yoga-tab2-pro-1380-fastcharger"
+#define YT2_1380_FC_SERDEV_CTRL "serial0"
+#define YT2_1380_FC_SERDEV_NAME "serial0-0"
+#define YT2_1380_FC_EXTCON_NAME "i2c-lc824206xa"
+
+#define YT2_1380_FC_MAX_TRIES 5
+#define YT2_1380_FC_PIN_SW_DELAY_US (10 * USEC_PER_MSEC)
+#define YT2_1380_FC_UART_DRAIN_DELAY_US (50 * USEC_PER_MSEC)
+#define YT2_1380_FC_VOLT_SW_DELAY_US (1000 * USEC_PER_MSEC)
+
+struct yt2_1380_fc {
+ struct device *dev;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *gpio_state;
+ struct pinctrl_state *uart_state;
+ struct gpio_desc *uart3_txd;
+ struct gpio_desc *uart3_rxd;
+ struct extcon_dev *extcon;
+ struct notifier_block nb;
+ struct work_struct work;
+ bool fast_charging;
+};
+
+static int yt2_1380_fc_set_gpio_mode(struct yt2_1380_fc *fc, bool enable)
+{
+ struct pinctrl_state *state = enable ? fc->gpio_state : fc->uart_state;
+ int ret;
+
+ ret = pinctrl_select_state(fc->pinctrl, state);
+ if (ret) {
+ dev_err(fc->dev, "Error %d setting pinctrl state\n", ret);
+ return ret;
+ }
+
+ fsleep(YT2_1380_FC_PIN_SW_DELAY_US);
+ return 0;
+}
+
+static bool yt2_1380_fc_dedicated_charger_connected(struct yt2_1380_fc *fc)
+{
+ return extcon_get_state(fc->extcon, EXTCON_CHG_USB_DCP) > 0;
+}
+
+static bool yt2_1380_fc_fast_charger_connected(struct yt2_1380_fc *fc)
+{
+ return extcon_get_state(fc->extcon, EXTCON_CHG_USB_FAST) > 0;
+}
+
+static void yt2_1380_fc_worker(struct work_struct *work)
+{
+ struct yt2_1380_fc *fc = container_of(work, struct yt2_1380_fc, work);
+ int i, ret;
+
+ /* Do nothing if already fast charging */
+ if (yt2_1380_fc_fast_charger_connected(fc))
+ return;
+
+ for (i = 0; i < YT2_1380_FC_MAX_TRIES; i++) {
+ /* Set pins to UART mode (for charger disconnect and retries) */
+ ret = yt2_1380_fc_set_gpio_mode(fc, false);
+ if (ret)
+ return;
+
+ /* Only try 12V charging if a dedicated charger is detected */
+ if (!yt2_1380_fc_dedicated_charger_connected(fc))
+ return;
+
+ /* Send the command to switch to 12V charging */
+ ret = serdev_device_write_buf(to_serdev_device(fc->dev), "SC", strlen("SC"));
+ if (ret != strlen("SC")) {
+ dev_err(fc->dev, "Error %d writing to uart\n", ret);
+ return;
+ }
+
+ fsleep(YT2_1380_FC_UART_DRAIN_DELAY_US);
+
+ /* Re-check a charger is still connected */
+ if (!yt2_1380_fc_dedicated_charger_connected(fc))
+ return;
+
+ /*
+ * Now switch the lines to GPIO (output, high). The charger
+ * expects the lines being driven high after the command.
+ * Presumably this is used to detect the tablet getting
+ * unplugged (to switch back to 5V output on unplug).
+ */
+ ret = yt2_1380_fc_set_gpio_mode(fc, true);
+ if (ret)
+ return;
+
+ fsleep(YT2_1380_FC_VOLT_SW_DELAY_US);
+
+ if (yt2_1380_fc_fast_charger_connected(fc))
+ return; /* Success */
+ }
+
+ dev_dbg(fc->dev, "Failed to switch to 12V charging (not the original charger?)\n");
+ /* Failed to enable 12V fast charging, reset pins to default UART mode */
+ yt2_1380_fc_set_gpio_mode(fc, false);
+}
+
+static int yt2_1380_fc_extcon_evt(struct notifier_block *nb,
+ unsigned long event, void *param)
+{
+ struct yt2_1380_fc *fc = container_of(nb, struct yt2_1380_fc, nb);
+
+ schedule_work(&fc->work);
+ return NOTIFY_OK;
+}
+
+static size_t yt2_1380_fc_receive(struct serdev_device *serdev, const u8 *data, size_t len)
+{
+ /*
+ * Since the USB data lines are shorted for DCP detection, echos of
+ * the "SC" command send in yt2_1380_fc_worker() will be received.
+ */
+ dev_dbg(&serdev->dev, "recv: %*ph\n", (int)len, data);
+ return len;
+}
+
+static const struct serdev_device_ops yt2_1380_fc_serdev_ops = {
+ .receive_buf = yt2_1380_fc_receive,
+ .write_wakeup = serdev_device_write_wakeup,
+};
+
+static int yt2_1380_fc_serdev_probe(struct serdev_device *serdev)
+{
+ struct device *dev = &serdev->dev;
+ struct yt2_1380_fc *fc;
+ int ret;
+
+ fc = devm_kzalloc(dev, sizeof(*fc), GFP_KERNEL);
+ if (!fc)
+ return -ENOMEM;
+
+ fc->dev = dev;
+ fc->nb.notifier_call = yt2_1380_fc_extcon_evt;
+ INIT_WORK(&fc->work, yt2_1380_fc_worker);
+
+ /*
+ * Do this first since it may return -EPROBE_DEFER.
+ * There is no extcon_put(), so there is no need to free this.
+ */
+ fc->extcon = extcon_get_extcon_dev(YT2_1380_FC_EXTCON_NAME);
+ if (IS_ERR(fc->extcon))
+ return dev_err_probe(dev, PTR_ERR(fc->extcon), "getting extcon\n");
+
+ fc->pinctrl = devm_pinctrl_get(dev);
+ if (IS_ERR(fc->pinctrl))
+ return dev_err_probe(dev, PTR_ERR(fc->pinctrl), "getting pinctrl\n");
+
+ /*
+ * To switch the UART3 pins connected to the USB data lines between
+ * UART and GPIO modes.
+ */
+ fc->gpio_state = pinctrl_lookup_state(fc->pinctrl, "uart3_gpio");
+ fc->uart_state = pinctrl_lookup_state(fc->pinctrl, "uart3_uart");
+ if (IS_ERR(fc->gpio_state) || IS_ERR(fc->uart_state))
+ return dev_err_probe(dev, -EINVAL, "getting pinctrl states\n");
+
+ ret = yt2_1380_fc_set_gpio_mode(fc, true);
+ if (ret)
+ return ret;
+
+ fc->uart3_txd = devm_gpiod_get(dev, "uart3_txd", GPIOD_OUT_HIGH);
+ if (IS_ERR(fc->uart3_txd))
+ return dev_err_probe(dev, PTR_ERR(fc->uart3_txd), "getting uart3_txd gpio\n");
+
+ fc->uart3_rxd = devm_gpiod_get(dev, "uart3_rxd", GPIOD_OUT_HIGH);
+ if (IS_ERR(fc->uart3_rxd))
+ return dev_err_probe(dev, PTR_ERR(fc->uart3_rxd), "getting uart3_rxd gpio\n");
+
+ ret = yt2_1380_fc_set_gpio_mode(fc, false);
+ if (ret)
+ return ret;
+
+ serdev_device_set_drvdata(serdev, fc);
+ serdev_device_set_client_ops(serdev, &yt2_1380_fc_serdev_ops);
+
+ ret = devm_serdev_device_open(dev, serdev);
+ if (ret)
+ return dev_err_probe(dev, ret, "opening UART device\n");
+
+ serdev_device_set_baudrate(serdev, 600);
+ serdev_device_set_flow_control(serdev, false);
+
+ ret = devm_extcon_register_notifier_all(dev, fc->extcon, &fc->nb);
+ if (ret)
+ return dev_err_probe(dev, ret, "registering extcon notifier\n");
+
+ /* In case the extcon already has detected a DCP charger */
+ schedule_work(&fc->work);
+
+ return 0;
+}
+
+static struct serdev_device_driver yt2_1380_fc_serdev_driver = {
+ .probe = yt2_1380_fc_serdev_probe,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+static const struct pinctrl_map yt2_1380_fc_pinctrl_map[] = {
+ PIN_MAP_MUX_GROUP(YT2_1380_FC_SERDEV_NAME, "uart3_uart",
+ "INT33FC:00", "uart3_grp", "uart"),
+ PIN_MAP_MUX_GROUP(YT2_1380_FC_SERDEV_NAME, "uart3_gpio",
+ "INT33FC:00", "uart3_grp_gpio", "gpio"),
+};
+
+static int yt2_1380_fc_pdev_probe(struct platform_device *pdev)
+{
+ struct serdev_device *serdev;
+ struct device *ctrl_dev;
+ int ret;
+
+ /* Register pinctrl mappings for setting the UART3 pins mode */
+ ret = pinctrl_register_mappings(yt2_1380_fc_pinctrl_map,
+ ARRAY_SIZE(yt2_1380_fc_pinctrl_map));
+ if (ret)
+ return ret;
+
+ /* And create the serdev to talk to the charger over the UART3 pins */
+ ctrl_dev = get_serdev_controller("PNP0501", "1", 0, YT2_1380_FC_SERDEV_CTRL);
+ if (IS_ERR(ctrl_dev)) {
+ ret = PTR_ERR(ctrl_dev);
+ goto out_pinctrl_unregister_mappings;
+ }
+
+ serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
+ put_device(ctrl_dev);
+ if (!serdev) {
+ ret = -ENOMEM;
+ goto out_pinctrl_unregister_mappings;
+ }
+
+ ret = serdev_device_add(serdev);
+ if (ret) {
+ dev_err_probe(&pdev->dev, ret, "adding serdev\n");
+ serdev_device_put(serdev);
+ goto out_pinctrl_unregister_mappings;
+ }
+
+ /*
+ * serdev device <-> driver matching relies on OF or ACPI matches and
+ * neither is available here, manually bind the driver.
+ */
+ ret = device_driver_attach(&yt2_1380_fc_serdev_driver.driver, &serdev->dev);
+ if (ret) {
+ /* device_driver_attach() maps EPROBE_DEFER to EAGAIN, map it back */
+ ret = (ret == -EAGAIN) ? -EPROBE_DEFER : ret;
+ dev_err_probe(&pdev->dev, ret, "attaching serdev driver\n");
+ goto out_serdev_device_remove;
+ }
+
+ /* So that yt2_1380_fc_pdev_remove() can remove the serdev */
+ platform_set_drvdata(pdev, serdev);
+ return 0;
+
+out_serdev_device_remove:
+ serdev_device_remove(serdev);
+out_pinctrl_unregister_mappings:
+ pinctrl_unregister_mappings(yt2_1380_fc_pinctrl_map);
+ return ret;
+}
+
+static void yt2_1380_fc_pdev_remove(struct platform_device *pdev)
+{
+ struct serdev_device *serdev = platform_get_drvdata(pdev);
+
+ serdev_device_remove(serdev);
+ pinctrl_unregister_mappings(yt2_1380_fc_pinctrl_map);
+}
+
+static struct platform_driver yt2_1380_fc_pdev_driver = {
+ .probe = yt2_1380_fc_pdev_probe,
+ .remove = yt2_1380_fc_pdev_remove,
+ .driver = {
+ .name = YT2_1380_FC_PDEV_NAME,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+};
+
+static int __init yt2_1380_fc_module_init(void)
+{
+ int ret;
+
+ /*
+ * serdev driver MUST be registered first because pdev driver calls
+ * device_driver_attach() on the serdev, serdev-driver pair.
+ */
+ ret = serdev_device_driver_register(&yt2_1380_fc_serdev_driver);
+ if (ret)
+ return ret;
+
+ ret = platform_driver_register(&yt2_1380_fc_pdev_driver);
+ if (ret)
+ serdev_device_driver_unregister(&yt2_1380_fc_serdev_driver);
+
+ return ret;
+}
+module_init(yt2_1380_fc_module_init);
+
+static void __exit yt2_1380_fc_module_exit(void)
+{
+ platform_driver_unregister(&yt2_1380_fc_pdev_driver);
+ serdev_device_driver_unregister(&yt2_1380_fc_serdev_driver);
+}
+module_exit(yt2_1380_fc_module_exit);
+
+MODULE_ALIAS("platform:" YT2_1380_FC_PDEV_NAME);
+MODULE_DESCRIPTION("Lenovo Yoga Tablet 2 1380 fast charge driver");
+MODULE_AUTHOR("Hans de Goede <hansg@kernel.org>");
+MODULE_LICENSE("GPL");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Platform driver for Lenovo Yoga Book YB1-X90F/L tablets (Android model)
+ * WMI driver for Lenovo Yoga Book YB1-X91F/L tablets (Windows model)
+ *
+ * The keyboard half of the YB1 models can function as both a capacitive
+ * touch keyboard or as a Wacom digitizer, but not at the same time.
+ *
+ * This driver takes care of switching between the 2 functions.
+ *
+ * Copyright 2023 Hans de Goede <hansg@kernel.org>
+ */
+
+#include <linux/acpi.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pwm.h>
+#include <linux/wmi.h>
+#include <linux/workqueue.h>
+
+#define YB_MBTN_EVENT_GUID "243FEC1D-1963-41C1-8100-06A9D82A94B4"
+
+#define YB_KBD_BL_DEFAULT 128
+#define YB_KBD_BL_MAX 255
+#define YB_KBD_BL_PWM_PERIOD 13333
+
+#define YB_PDEV_NAME "yogabook-touch-kbd-digitizer-switch"
+
+/* flags */
+enum {
+ YB_KBD_IS_ON,
+ YB_DIGITIZER_IS_ON,
+ YB_DIGITIZER_MODE,
+ YB_TABLET_MODE,
+ YB_SUSPENDED,
+};
+
+struct yogabook_data {
+ struct device *dev;
+ struct acpi_device *kbd_adev;
+ struct acpi_device *dig_adev;
+ struct device *kbd_dev;
+ struct device *dig_dev;
+ struct led_classdev *pen_led;
+ struct gpio_desc *pen_touch_event;
+ struct gpio_desc *kbd_bl_led_enable;
+ struct gpio_desc *backside_hall_gpio;
+ struct pwm_device *kbd_bl_pwm;
+ int (*set_kbd_backlight)(struct yogabook_data *data, uint8_t level);
+ int pen_touch_irq;
+ int backside_hall_irq;
+ struct work_struct work;
+ struct led_classdev kbd_bl_led;
+ unsigned long flags;
+ uint8_t brightness;
+};
+
+static void yogabook_work(struct work_struct *work)
+{
+ struct yogabook_data *data = container_of(work, struct yogabook_data, work);
+ bool kbd_on, digitizer_on;
+ int r;
+
+ if (test_bit(YB_SUSPENDED, &data->flags))
+ return;
+
+ if (test_bit(YB_TABLET_MODE, &data->flags)) {
+ kbd_on = false;
+ digitizer_on = false;
+ } else if (test_bit(YB_DIGITIZER_MODE, &data->flags)) {
+ digitizer_on = true;
+ kbd_on = false;
+ } else {
+ kbd_on = true;
+ digitizer_on = false;
+ }
+
+ if (!kbd_on && test_bit(YB_KBD_IS_ON, &data->flags)) {
+ /*
+ * Must be done before releasing the keyboard touchscreen driver,
+ * so that the keyboard touchscreen dev is still in D0.
+ */
+ data->set_kbd_backlight(data, 0);
+ device_release_driver(data->kbd_dev);
+ clear_bit(YB_KBD_IS_ON, &data->flags);
+ }
+
+ if (!digitizer_on && test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
+ led_set_brightness(data->pen_led, LED_OFF);
+ device_release_driver(data->dig_dev);
+ clear_bit(YB_DIGITIZER_IS_ON, &data->flags);
+ }
+
+ if (kbd_on && !test_bit(YB_KBD_IS_ON, &data->flags)) {
+ r = device_reprobe(data->kbd_dev);
+ if (r)
+ dev_warn(data->dev, "Reprobe of keyboard touchscreen failed: %d\n", r);
+
+ data->set_kbd_backlight(data, data->brightness);
+ set_bit(YB_KBD_IS_ON, &data->flags);
+ }
+
+ if (digitizer_on && !test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
+ r = device_reprobe(data->dig_dev);
+ if (r)
+ dev_warn(data->dev, "Reprobe of digitizer failed: %d\n", r);
+
+ led_set_brightness(data->pen_led, LED_FULL);
+ set_bit(YB_DIGITIZER_IS_ON, &data->flags);
+ }
+}
+
+static void yogabook_toggle_digitizer_mode(struct yogabook_data *data)
+{
+ if (test_bit(YB_SUSPENDED, &data->flags))
+ return;
+
+ if (test_bit(YB_DIGITIZER_MODE, &data->flags))
+ clear_bit(YB_DIGITIZER_MODE, &data->flags);
+ else
+ set_bit(YB_DIGITIZER_MODE, &data->flags);
+
+ /*
+ * We are called from the ACPI core and the driver [un]binding which is
+ * done also needs ACPI functions, use a workqueue to avoid deadlocking.
+ */
+ schedule_work(&data->work);
+}
+
+static irqreturn_t yogabook_backside_hall_irq(int irq, void *_data)
+{
+ struct yogabook_data *data = _data;
+
+ if (gpiod_get_value(data->backside_hall_gpio))
+ set_bit(YB_TABLET_MODE, &data->flags);
+ else
+ clear_bit(YB_TABLET_MODE, &data->flags);
+
+ schedule_work(&data->work);
+
+ return IRQ_HANDLED;
+}
+
+#define kbd_led_to_yogabook(cdev) container_of(cdev, struct yogabook_data, kbd_bl_led)
+
+static enum led_brightness kbd_brightness_get(struct led_classdev *cdev)
+{
+ struct yogabook_data *data = kbd_led_to_yogabook(cdev);
+
+ return data->brightness;
+}
+
+static int kbd_brightness_set(struct led_classdev *cdev,
+ enum led_brightness value)
+{
+ struct yogabook_data *data = kbd_led_to_yogabook(cdev);
+
+ if ((value < 0) || (value > YB_KBD_BL_MAX))
+ return -EINVAL;
+
+ data->brightness = value;
+
+ if (!test_bit(YB_KBD_IS_ON, &data->flags))
+ return 0;
+
+ return data->set_kbd_backlight(data, data->brightness);
+}
+
+static struct gpiod_lookup_table yogabook_gpios = {
+ .table = {
+ GPIO_LOOKUP("INT33FF:02", 18, "backside_hall_sw", GPIO_ACTIVE_LOW),
+ {}
+ },
+};
+
+static struct led_lookup_data yogabook_pen_led = {
+ .provider = "platform::indicator",
+ .con_id = "pen-icon-led",
+};
+
+static int yogabook_probe(struct device *dev, struct yogabook_data *data,
+ const char *kbd_bl_led_name)
+{
+ int r;
+
+ data->dev = dev;
+ data->brightness = YB_KBD_BL_DEFAULT;
+ set_bit(YB_KBD_IS_ON, &data->flags);
+ set_bit(YB_DIGITIZER_IS_ON, &data->flags);
+ INIT_WORK(&data->work, yogabook_work);
+
+ yogabook_pen_led.dev_id = dev_name(dev);
+ led_add_lookup(&yogabook_pen_led);
+ data->pen_led = devm_led_get(dev, "pen-icon-led");
+ led_remove_lookup(&yogabook_pen_led);
+
+ if (IS_ERR(data->pen_led))
+ return dev_err_probe(dev, PTR_ERR(data->pen_led), "Getting pen icon LED\n");
+
+ yogabook_gpios.dev_id = dev_name(dev);
+ gpiod_add_lookup_table(&yogabook_gpios);
+ data->backside_hall_gpio = devm_gpiod_get(dev, "backside_hall_sw", GPIOD_IN);
+ gpiod_remove_lookup_table(&yogabook_gpios);
+
+ if (IS_ERR(data->backside_hall_gpio))
+ return dev_err_probe(dev, PTR_ERR(data->backside_hall_gpio),
+ "Getting backside_hall_sw GPIO\n");
+
+ r = gpiod_to_irq(data->backside_hall_gpio);
+ if (r < 0)
+ return dev_err_probe(dev, r, "Getting backside_hall_sw IRQ\n");
+
+ data->backside_hall_irq = r;
+
+ /* Set default brightness before enabling the IRQ */
+ data->set_kbd_backlight(data, YB_KBD_BL_DEFAULT);
+
+ r = request_irq(data->backside_hall_irq, yogabook_backside_hall_irq,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "backside_hall_sw", data);
+ if (r)
+ return dev_err_probe(dev, r, "Requesting backside_hall_sw IRQ\n");
+
+ schedule_work(&data->work);
+
+ data->kbd_bl_led.name = kbd_bl_led_name;
+ data->kbd_bl_led.brightness_set_blocking = kbd_brightness_set;
+ data->kbd_bl_led.brightness_get = kbd_brightness_get;
+ data->kbd_bl_led.max_brightness = YB_KBD_BL_MAX;
+
+ r = devm_led_classdev_register(dev, &data->kbd_bl_led);
+ if (r < 0) {
+ dev_err_probe(dev, r, "Registering backlight LED device\n");
+ goto error_free_irq;
+ }
+
+ dev_set_drvdata(dev, data);
+ return 0;
+
+error_free_irq:
+ free_irq(data->backside_hall_irq, data);
+ cancel_work_sync(&data->work);
+ return r;
+}
+
+static void yogabook_remove(struct yogabook_data *data)
+{
+ int r = 0;
+
+ free_irq(data->backside_hall_irq, data);
+ cancel_work_sync(&data->work);
+
+ if (!test_bit(YB_KBD_IS_ON, &data->flags))
+ r |= device_reprobe(data->kbd_dev);
+
+ if (!test_bit(YB_DIGITIZER_IS_ON, &data->flags))
+ r |= device_reprobe(data->dig_dev);
+
+ if (r)
+ dev_warn(data->dev, "Reprobe of devices failed\n");
+}
+
+static int yogabook_suspend(struct device *dev)
+{
+ struct yogabook_data *data = dev_get_drvdata(dev);
+
+ set_bit(YB_SUSPENDED, &data->flags);
+ flush_work(&data->work);
+
+ if (test_bit(YB_KBD_IS_ON, &data->flags))
+ data->set_kbd_backlight(data, 0);
+
+ return 0;
+}
+
+static int yogabook_resume(struct device *dev)
+{
+ struct yogabook_data *data = dev_get_drvdata(dev);
+
+ if (test_bit(YB_KBD_IS_ON, &data->flags))
+ data->set_kbd_backlight(data, data->brightness);
+
+ clear_bit(YB_SUSPENDED, &data->flags);
+
+ /* Check for YB_TABLET_MODE changes made during suspend */
+ schedule_work(&data->work);
+
+ return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(yogabook_pm_ops, yogabook_suspend, yogabook_resume);
+
+/********** WMI driver code **********/
+
+/*
+ * To control keyboard backlight, call the method KBLC() of the TCS1 ACPI
+ * device (Goodix touchpad acts as virtual sensor keyboard).
+ */
+static int yogabook_wmi_set_kbd_backlight(struct yogabook_data *data,
+ uint8_t level)
+{
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_object_list input;
+ union acpi_object param;
+ acpi_status status;
+
+ dev_dbg(data->dev, "Set KBLC level to %u\n", level);
+
+ /* Ensure keyboard touchpad is on before we call KBLC() */
+ acpi_device_set_power(data->kbd_adev, ACPI_STATE_D0);
+
+ input.count = 1;
+ input.pointer = ¶m;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = YB_KBD_BL_MAX - level;
+
+ status = acpi_evaluate_object(acpi_device_handle(data->kbd_adev), "KBLC",
+ &input, &output);
+ if (ACPI_FAILURE(status)) {
+ dev_err(data->dev, "Failed to call KBLC method: 0x%x\n", status);
+ return status;
+ }
+
+ kfree(output.pointer);
+ return 0;
+}
+
+static int yogabook_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ struct device *dev = &wdev->dev;
+ struct yogabook_data *data;
+ int r;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->kbd_adev = acpi_dev_get_first_match_dev("GDIX1001", NULL, -1);
+ if (!data->kbd_adev)
+ return dev_err_probe(dev, -ENODEV, "Cannot find the touchpad device in ACPI tables\n");
+
+ data->dig_adev = acpi_dev_get_first_match_dev("WCOM0019", NULL, -1);
+ if (!data->dig_adev) {
+ r = dev_err_probe(dev, -ENODEV, "Cannot find the digitizer device in ACPI tables\n");
+ goto error_put_devs;
+ }
+
+ data->kbd_dev = get_device(acpi_get_first_physical_node(data->kbd_adev));
+ if (!data->kbd_dev || !data->kbd_dev->driver) {
+ r = -EPROBE_DEFER;
+ goto error_put_devs;
+ }
+
+ data->dig_dev = get_device(acpi_get_first_physical_node(data->dig_adev));
+ if (!data->dig_dev || !data->dig_dev->driver) {
+ r = -EPROBE_DEFER;
+ goto error_put_devs;
+ }
+
+ data->set_kbd_backlight = yogabook_wmi_set_kbd_backlight;
+
+ r = yogabook_probe(dev, data, "ybwmi::kbd_backlight");
+ if (r)
+ goto error_put_devs;
+
+ return 0;
+
+error_put_devs:
+ put_device(data->dig_dev);
+ put_device(data->kbd_dev);
+ acpi_dev_put(data->dig_adev);
+ acpi_dev_put(data->kbd_adev);
+ return r;
+}
+
+static void yogabook_wmi_remove(struct wmi_device *wdev)
+{
+ struct yogabook_data *data = dev_get_drvdata(&wdev->dev);
+
+ yogabook_remove(data);
+
+ put_device(data->dig_dev);
+ put_device(data->kbd_dev);
+ acpi_dev_put(data->dig_adev);
+ acpi_dev_put(data->kbd_adev);
+}
+
+static void yogabook_wmi_notify(struct wmi_device *wdev, union acpi_object *dummy)
+{
+ yogabook_toggle_digitizer_mode(dev_get_drvdata(&wdev->dev));
+}
+
+static const struct wmi_device_id yogabook_wmi_id_table[] = {
+ {
+ .guid_string = YB_MBTN_EVENT_GUID,
+ },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(wmi, yogabook_wmi_id_table);
+
+static struct wmi_driver yogabook_wmi_driver = {
+ .driver = {
+ .name = "yogabook-wmi",
+ .pm = pm_sleep_ptr(&yogabook_pm_ops),
+ },
+ .no_notify_data = true,
+ .id_table = yogabook_wmi_id_table,
+ .probe = yogabook_wmi_probe,
+ .remove = yogabook_wmi_remove,
+ .notify = yogabook_wmi_notify,
+};
+
+/********** platform driver code **********/
+
+static struct gpiod_lookup_table yogabook_pdev_gpios = {
+ .dev_id = YB_PDEV_NAME,
+ .table = {
+ GPIO_LOOKUP("INT33FF:00", 95, "pen_touch_event", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("INT33FF:03", 52, "enable_keyboard_led", GPIO_ACTIVE_HIGH),
+ {}
+ },
+};
+
+static int yogabook_pdev_set_kbd_backlight(struct yogabook_data *data, u8 level)
+{
+ struct pwm_state state = {
+ .period = YB_KBD_BL_PWM_PERIOD,
+ .duty_cycle = YB_KBD_BL_PWM_PERIOD * level / YB_KBD_BL_MAX,
+ .enabled = level,
+ };
+
+ pwm_apply_might_sleep(data->kbd_bl_pwm, &state);
+ gpiod_set_value(data->kbd_bl_led_enable, level ? 1 : 0);
+ return 0;
+}
+
+static irqreturn_t yogabook_pen_touch_irq(int irq, void *data)
+{
+ yogabook_toggle_digitizer_mode(data);
+ return IRQ_HANDLED;
+}
+
+static int yogabook_pdev_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct yogabook_data *data;
+ int r;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->kbd_dev = bus_find_device_by_name(&i2c_bus_type, NULL, "i2c-goodix_ts");
+ if (!data->kbd_dev || !data->kbd_dev->driver) {
+ r = -EPROBE_DEFER;
+ goto error_put_devs;
+ }
+
+ data->dig_dev = bus_find_device_by_name(&i2c_bus_type, NULL, "i2c-wacom");
+ if (!data->dig_dev || !data->dig_dev->driver) {
+ r = -EPROBE_DEFER;
+ goto error_put_devs;
+ }
+
+ gpiod_add_lookup_table(&yogabook_pdev_gpios);
+ data->pen_touch_event = devm_gpiod_get(dev, "pen_touch_event", GPIOD_IN);
+ data->kbd_bl_led_enable = devm_gpiod_get(dev, "enable_keyboard_led", GPIOD_OUT_HIGH);
+ gpiod_remove_lookup_table(&yogabook_pdev_gpios);
+
+ if (IS_ERR(data->pen_touch_event)) {
+ r = dev_err_probe(dev, PTR_ERR(data->pen_touch_event),
+ "Getting pen_touch_event GPIO\n");
+ goto error_put_devs;
+ }
+
+ if (IS_ERR(data->kbd_bl_led_enable)) {
+ r = dev_err_probe(dev, PTR_ERR(data->kbd_bl_led_enable),
+ "Getting enable_keyboard_led GPIO\n");
+ goto error_put_devs;
+ }
+
+ data->kbd_bl_pwm = devm_pwm_get(dev, "pwm_soc_lpss_2");
+ if (IS_ERR(data->kbd_bl_pwm)) {
+ r = dev_err_probe(dev, PTR_ERR(data->kbd_bl_pwm),
+ "Getting keyboard backlight PWM\n");
+ goto error_put_devs;
+ }
+
+ r = gpiod_to_irq(data->pen_touch_event);
+ if (r < 0) {
+ dev_err_probe(dev, r, "Getting pen_touch_event IRQ\n");
+ goto error_put_devs;
+ }
+ data->pen_touch_irq = r;
+
+ r = request_irq(data->pen_touch_irq, yogabook_pen_touch_irq, IRQF_TRIGGER_FALLING,
+ "pen_touch_event", data);
+ if (r) {
+ dev_err_probe(dev, r, "Requesting pen_touch_event IRQ\n");
+ goto error_put_devs;
+ }
+
+ data->set_kbd_backlight = yogabook_pdev_set_kbd_backlight;
+
+ r = yogabook_probe(dev, data, "yogabook::kbd_backlight");
+ if (r)
+ goto error_free_irq;
+
+ return 0;
+
+error_free_irq:
+ free_irq(data->pen_touch_irq, data);
+ cancel_work_sync(&data->work);
+error_put_devs:
+ put_device(data->dig_dev);
+ put_device(data->kbd_dev);
+ return r;
+}
+
+static void yogabook_pdev_remove(struct platform_device *pdev)
+{
+ struct yogabook_data *data = platform_get_drvdata(pdev);
+
+ yogabook_remove(data);
+ free_irq(data->pen_touch_irq, data);
+ cancel_work_sync(&data->work);
+ put_device(data->dig_dev);
+ put_device(data->kbd_dev);
+}
+
+static struct platform_driver yogabook_pdev_driver = {
+ .probe = yogabook_pdev_probe,
+ .remove = yogabook_pdev_remove,
+ .driver = {
+ .name = YB_PDEV_NAME,
+ .pm = pm_sleep_ptr(&yogabook_pm_ops),
+ },
+};
+
+static int __init yogabook_module_init(void)
+{
+ int r;
+
+ r = wmi_driver_register(&yogabook_wmi_driver);
+ if (r)
+ return r;
+
+ r = platform_driver_register(&yogabook_pdev_driver);
+ if (r)
+ wmi_driver_unregister(&yogabook_wmi_driver);
+
+ return r;
+}
+
+static void __exit yogabook_module_exit(void)
+{
+ platform_driver_unregister(&yogabook_pdev_driver);
+ wmi_driver_unregister(&yogabook_wmi_driver);
+}
+
+module_init(yogabook_module_init);
+module_exit(yogabook_module_exit);
+
+MODULE_ALIAS("platform:" YB_PDEV_NAME);
+MODULE_AUTHOR("Yauhen Kharuzhy");
+MODULE_DESCRIPTION("Lenovo Yoga Book driver");
+MODULE_LICENSE("GPL v2");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Think LMI BIOS configuration driver
- *
- * Copyright(C) 2019-2021 Lenovo
- *
- * Original code from Thinkpad-wmi project https://github.com/iksaif/thinkpad-wmi
- * Copyright(C) 2017 Corentin Chary <corentin.chary@gmail.com>
- * Distributed under the GPL-2.0 license
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/acpi.h>
-#include <linux/array_size.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/mutex.h>
-#include <linux/string_helpers.h>
-#include <linux/types.h>
-#include <linux/dmi.h>
-#include <linux/wmi.h>
-#include "firmware_attributes_class.h"
-#include "think-lmi.h"
-
-static bool debug_support;
-module_param(debug_support, bool, 0444);
-MODULE_PARM_DESC(debug_support, "Enable debug command support");
-
-/*
- * Name: BiosSetting
- * Description: Get item name and settings for current LMI instance.
- * Type: Query
- * Returns: "Item,Value"
- * Example: "WakeOnLAN,Enable"
- */
-#define LENOVO_BIOS_SETTING_GUID "51F5230E-9677-46CD-A1CF-C0B23EE34DB7"
-
-/*
- * Name: SetBiosSetting
- * Description: Change the BIOS setting to the desired value using the SetBiosSetting
- * class. To save the settings, use the SaveBiosSetting class.
- * BIOS settings and values are case sensitive.
- * After making changes to the BIOS settings, you must reboot the computer
- * before the changes will take effect.
- * Type: Method
- * Arguments: "Item,Value,Password,Encoding,KbdLang;"
- * Example: "WakeOnLAN,Disable,pa55w0rd,ascii,us;"
- */
-#define LENOVO_SET_BIOS_SETTINGS_GUID "98479A64-33F5-4E33-A707-8E251EBBC3A1"
-
-/*
- * Name: SaveBiosSettings
- * Description: Save any pending changes in settings.
- * Type: Method
- * Arguments: "Password,Encoding,KbdLang;"
- * Example: "pa55w0rd,ascii,us;"
- */
-#define LENOVO_SAVE_BIOS_SETTINGS_GUID "6A4B54EF-A5ED-4D33-9455-B0D9B48DF4B3"
-
-/*
- * Name: BiosPasswordSettings
- * Description: Return BIOS Password settings
- * Type: Query
- * Returns: PasswordMode, PasswordState, MinLength, MaxLength,
- * SupportedEncoding, SupportedKeyboard
- */
-#define LENOVO_BIOS_PASSWORD_SETTINGS_GUID "8ADB159E-1E32-455C-BC93-308A7ED98246"
-
-/*
- * Name: SetBiosPassword
- * Description: Change a specific password.
- * - BIOS settings cannot be changed at the same boot as power-on
- * passwords (POP) and hard disk passwords (HDP). If you want to change
- * BIOS settings and POP or HDP, you must reboot the system after changing
- * one of them.
- * - A password cannot be set using this method when one does not already
- * exist. Passwords can only be updated or cleared.
- * Type: Method
- * Arguments: "PasswordType,CurrentPassword,NewPassword,Encoding,KbdLang;"
- * Example: "pop,pa55w0rd,newpa55w0rd,ascii,us;”
- */
-#define LENOVO_SET_BIOS_PASSWORD_GUID "2651D9FD-911C-4B69-B94E-D0DED5963BD7"
-
-/*
- * Name: GetBiosSelections
- * Description: Return a list of valid settings for a given item.
- * Type: Method
- * Arguments: "Item"
- * Returns: "Value1,Value2,Value3,..."
- * Example:
- * -> "FlashOverLAN"
- * <- "Enabled,Disabled"
- */
-#define LENOVO_GET_BIOS_SELECTIONS_GUID "7364651A-132F-4FE7-ADAA-40C6C7EE2E3B"
-
-/*
- * Name: DebugCmd
- * Description: Debug entry method for entering debug commands to the BIOS
- */
-#define LENOVO_DEBUG_CMD_GUID "7FF47003-3B6C-4E5E-A227-E979824A85D1"
-
-/*
- * Name: OpcodeIF
- * Description: Opcode interface which provides the ability to set multiple
- * parameters and then trigger an action with a final command.
- * This is particularly useful for simplifying setting passwords.
- * With this support comes the ability to set System, HDD and NVMe
- * passwords.
- * This is currently available on ThinkCenter and ThinkStations platforms
- */
-#define LENOVO_OPCODE_IF_GUID "DFDDEF2C-57D4-48ce-B196-0FB787D90836"
-
-/*
- * Name: SetBiosCert
- * Description: Install BIOS certificate.
- * Type: Method
- * Arguments: "Certificate,Password"
- * You must reboot the computer before the changes will take effect.
- */
-#define LENOVO_SET_BIOS_CERT_GUID "26861C9F-47E9-44C4-BD8B-DFE7FA2610FE"
-
-/*
- * Name: UpdateBiosCert
- * Description: Update BIOS certificate.
- * Type: Method
- * Format: "Certificate,Signature"
- * You must reboot the computer before the changes will take effect.
- */
-#define LENOVO_UPDATE_BIOS_CERT_GUID "9AA3180A-9750-41F7-B9F7-D5D3B1BAC3CE"
-
-/*
- * Name: ClearBiosCert
- * Description: Uninstall BIOS certificate.
- * Type: Method
- * Format: "Serial,Signature"
- * You must reboot the computer before the changes will take effect.
- */
-#define LENOVO_CLEAR_BIOS_CERT_GUID "B2BC39A7-78DD-4D71-B059-A510DEC44890"
-/*
- * Name: CertToPassword
- * Description: Switch from certificate to password authentication.
- * Type: Method
- * Format: "Password,Signature"
- * You must reboot the computer before the changes will take effect.
- */
-#define LENOVO_CERT_TO_PASSWORD_GUID "0DE8590D-5510-4044-9621-77C227F5A70D"
-
-/*
- * Name: SetBiosSettingCert
- * Description: Set attribute using certificate authentication.
- * Type: Method
- * Format: "Item,Value,Signature"
- */
-#define LENOVO_SET_BIOS_SETTING_CERT_GUID "34A008CC-D205-4B62-9E67-31DFA8B90003"
-
-/*
- * Name: SaveBiosSettingCert
- * Description: Save any pending changes in settings.
- * Type: Method
- * Format: "Signature"
- */
-#define LENOVO_SAVE_BIOS_SETTING_CERT_GUID "C050FB9D-DF5F-4606-B066-9EFC401B2551"
-
-/*
- * Name: CertThumbprint
- * Description: Display Certificate thumbprints
- * Type: Query
- * Returns: MD5, SHA1 & SHA256 thumbprints
- */
-#define LENOVO_CERT_THUMBPRINT_GUID "C59119ED-1C0D-4806-A8E9-59AA318176C4"
-
-#define TLMI_POP_PWD BIT(0) /* Supervisor */
-#define TLMI_PAP_PWD BIT(1) /* Power-on */
-#define TLMI_HDD_PWD BIT(2) /* HDD/NVME */
-#define TLMI_SMP_PWD BIT(6) /* System Management */
-#define TLMI_CERT_SVC BIT(7) /* Admin Certificate Based */
-#define TLMI_CERT_SMC BIT(8) /* System Certificate Based */
-
-static const struct tlmi_err_codes tlmi_errs[] = {
- {"Success", 0},
- {"Not Supported", -EOPNOTSUPP},
- {"Invalid Parameter", -EINVAL},
- {"Access Denied", -EACCES},
- {"System Busy", -EBUSY},
-};
-
-static const char * const encoding_options[] = {
- [TLMI_ENCODING_ASCII] = "ascii",
- [TLMI_ENCODING_SCANCODE] = "scancode",
-};
-static const char * const level_options[] = {
- [TLMI_LEVEL_USER] = "user",
- [TLMI_LEVEL_MASTER] = "master",
-};
-static struct think_lmi tlmi_priv;
-static DEFINE_MUTEX(tlmi_mutex);
-
-static inline struct tlmi_pwd_setting *to_tlmi_pwd_setting(struct kobject *kobj)
-{
- return container_of(kobj, struct tlmi_pwd_setting, kobj);
-}
-
-static inline struct tlmi_attr_setting *to_tlmi_attr_setting(struct kobject *kobj)
-{
- return container_of(kobj, struct tlmi_attr_setting, kobj);
-}
-
-/* Convert BIOS WMI error string to suitable error code */
-static int tlmi_errstr_to_err(const char *errstr)
-{
- int i;
-
- for (i = 0; i < sizeof(tlmi_errs)/sizeof(struct tlmi_err_codes); i++) {
- if (!strcmp(tlmi_errs[i].err_str, errstr))
- return tlmi_errs[i].err_code;
- }
- return -EPERM;
-}
-
-/* Extract error string from WMI return buffer */
-static int tlmi_extract_error(const struct acpi_buffer *output)
-{
- const union acpi_object *obj;
-
- obj = output->pointer;
- if (!obj)
- return -ENOMEM;
- if (obj->type != ACPI_TYPE_STRING || !obj->string.pointer)
- return -EIO;
-
- return tlmi_errstr_to_err(obj->string.pointer);
-}
-
-/* Utility function to execute WMI call to BIOS */
-static int tlmi_simple_call(const char *guid, const char *arg)
-{
- const struct acpi_buffer input = { strlen(arg), (char *)arg };
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- acpi_status status;
- int i, err;
-
- /*
- * Duplicated call required to match BIOS workaround for behavior
- * seen when WMI accessed via scripting on other OS.
- */
- for (i = 0; i < 2; i++) {
- /* (re)initialize output buffer to default state */
- output.length = ACPI_ALLOCATE_BUFFER;
- output.pointer = NULL;
-
- status = wmi_evaluate_method(guid, 0, 0, &input, &output);
- if (ACPI_FAILURE(status)) {
- kfree(output.pointer);
- return -EIO;
- }
- err = tlmi_extract_error(&output);
- kfree(output.pointer);
- if (err)
- return err;
- }
- return 0;
-}
-
-/* Extract output string from WMI return value */
-static int tlmi_extract_output_string(union acpi_object *obj, char **string)
-{
- char *s;
-
- if (obj->type != ACPI_TYPE_STRING || !obj->string.pointer)
- return -EIO;
-
- s = kstrdup(obj->string.pointer, GFP_KERNEL);
- if (!s)
- return -ENOMEM;
- *string = s;
- return 0;
-}
-
-/* ------ Core interface functions ------------*/
-
-/* Get password settings from BIOS */
-static int tlmi_get_pwd_settings(struct tlmi_pwdcfg *pwdcfg)
-{
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- const union acpi_object *obj;
- acpi_status status;
- int copy_size;
-
- if (!tlmi_priv.can_get_password_settings)
- return -EOPNOTSUPP;
-
- status = wmi_query_block(LENOVO_BIOS_PASSWORD_SETTINGS_GUID, 0,
- &output);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- obj = output.pointer;
- if (!obj)
- return -ENOMEM;
- if (obj->type != ACPI_TYPE_BUFFER || !obj->buffer.pointer) {
- kfree(obj);
- return -EIO;
- }
- /*
- * The size of thinkpad_wmi_pcfg on ThinkStation is larger than ThinkPad.
- * To make the driver compatible on different brands, we permit it to get
- * the data in below case.
- * Settings must have at minimum the core fields available
- */
- if (obj->buffer.length < sizeof(struct tlmi_pwdcfg_core)) {
- pr_warn("Unknown pwdcfg buffer length %d\n", obj->buffer.length);
- kfree(obj);
- return -EIO;
- }
-
- copy_size = min_t(size_t, obj->buffer.length, sizeof(struct tlmi_pwdcfg));
-
- memcpy(pwdcfg, obj->buffer.pointer, copy_size);
- kfree(obj);
-
- if (WARN_ON(pwdcfg->core.max_length >= TLMI_PWD_BUFSIZE))
- pwdcfg->core.max_length = TLMI_PWD_BUFSIZE - 1;
- return 0;
-}
-
-static int tlmi_save_bios_settings(const char *password)
-{
- return tlmi_simple_call(LENOVO_SAVE_BIOS_SETTINGS_GUID,
- password);
-}
-
-static int tlmi_opcode_setting(char *setting, const char *value)
-{
- char *opcode_str;
- int ret;
-
- opcode_str = kasprintf(GFP_KERNEL, "%s:%s;", setting, value);
- if (!opcode_str)
- return -ENOMEM;
-
- ret = tlmi_simple_call(LENOVO_OPCODE_IF_GUID, opcode_str);
- kfree(opcode_str);
- return ret;
-}
-
-static int tlmi_setting(struct wmi_device *wdev, int item, char **value)
-{
- union acpi_object *obj;
- int ret;
-
- obj = wmidev_block_query(wdev, item);
- if (!obj)
- return -EIO;
-
- ret = tlmi_extract_output_string(obj, value);
- kfree(obj);
-
- return ret;
-}
-
-static int tlmi_get_bios_selections(const char *item, char **value)
-{
- const struct acpi_buffer input = { strlen(item), (char *)item };
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- acpi_status status;
- int ret;
-
- status = wmi_evaluate_method(LENOVO_GET_BIOS_SELECTIONS_GUID,
- 0, 0, &input, &output);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- obj = output.pointer;
- if (!obj)
- return -ENODATA;
-
- ret = tlmi_extract_output_string(obj, value);
- kfree(obj);
-
- return ret;
-}
-
-/* ---- Authentication sysfs --------------------------------------------------------- */
-static ssize_t is_enabled_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%d\n", setting->pwd_enabled || setting->cert_installed);
-}
-
-static struct kobj_attribute auth_is_pass_set = __ATTR_RO(is_enabled);
-
-static ssize_t current_password_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- size_t pwdlen;
-
- pwdlen = strlen(buf);
- /* pwdlen == 0 is allowed to clear the password */
- if (pwdlen && ((pwdlen < setting->minlen) || (pwdlen > setting->maxlen)))
- return -EINVAL;
-
- strscpy(setting->password, buf, setting->maxlen);
- /* Strip out CR if one is present, setting password won't work if it is present */
- strreplace(setting->password, '\n', '\0');
- return count;
-}
-
-static struct kobj_attribute auth_current_password = __ATTR_WO(current_password);
-
-static ssize_t new_password_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- char *auth_str, *new_pwd;
- size_t pwdlen;
- int ret;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (!tlmi_priv.can_set_bios_password)
- return -EOPNOTSUPP;
-
- /* Strip out CR if one is present, setting password won't work if it is present */
- new_pwd = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!new_pwd)
- return -ENOMEM;
-
- /* Use lock in case multiple WMI operations needed */
- mutex_lock(&tlmi_mutex);
-
- pwdlen = strlen(new_pwd);
- /* pwdlen == 0 is allowed to clear the password */
- if (pwdlen && ((pwdlen < setting->minlen) || (pwdlen > setting->maxlen))) {
- ret = -EINVAL;
- goto out;
- }
-
- /* If opcode support is present use that interface */
- if (tlmi_priv.opcode_support) {
- char pwd_type[8];
-
- /* Special handling required for HDD and NVMe passwords */
- if (setting == tlmi_priv.pwd_hdd) {
- if (setting->level == TLMI_LEVEL_USER)
- sprintf(pwd_type, "uhdp%d", setting->index);
- else
- sprintf(pwd_type, "mhdp%d", setting->index);
- } else if (setting == tlmi_priv.pwd_nvme) {
- if (setting->level == TLMI_LEVEL_USER)
- sprintf(pwd_type, "udrp%d", setting->index);
- else
- sprintf(pwd_type, "adrp%d", setting->index);
- } else {
- sprintf(pwd_type, "%s", setting->pwd_type);
- }
-
- ret = tlmi_opcode_setting("WmiOpcodePasswordType", pwd_type);
- if (ret)
- goto out;
-
- /*
- * Note admin password is not always required if SMPControl enabled in BIOS,
- * So only set if it's configured.
- * Let BIOS figure it out - we'll get an error if operation is not permitted
- */
- if (tlmi_priv.pwd_admin->pwd_enabled && strlen(tlmi_priv.pwd_admin->password)) {
- ret = tlmi_opcode_setting("WmiOpcodePasswordAdmin",
- tlmi_priv.pwd_admin->password);
- if (ret)
- goto out;
- }
- ret = tlmi_opcode_setting("WmiOpcodePasswordCurrent01", setting->password);
- if (ret)
- goto out;
- ret = tlmi_opcode_setting("WmiOpcodePasswordNew01", new_pwd);
- if (ret)
- goto out;
- ret = tlmi_simple_call(LENOVO_OPCODE_IF_GUID, "WmiOpcodePasswordSetUpdate;");
- } else {
- /* Format: 'PasswordType,CurrentPw,NewPw,Encoding,KbdLang;' */
- auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s,%s,%s;",
- setting->pwd_type, setting->password, new_pwd,
- encoding_options[setting->encoding], setting->kbdlang);
- if (!auth_str) {
- ret = -ENOMEM;
- goto out;
- }
- ret = tlmi_simple_call(LENOVO_SET_BIOS_PASSWORD_GUID, auth_str);
- kfree(auth_str);
- }
-out:
- mutex_unlock(&tlmi_mutex);
- kfree(new_pwd);
- return ret ?: count;
-}
-
-static struct kobj_attribute auth_new_password = __ATTR_WO(new_password);
-
-static ssize_t min_password_length_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%d\n", setting->minlen);
-}
-
-static struct kobj_attribute auth_min_pass_length = __ATTR_RO(min_password_length);
-
-static ssize_t max_password_length_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%d\n", setting->maxlen);
-}
-static struct kobj_attribute auth_max_pass_length = __ATTR_RO(max_password_length);
-
-static ssize_t mechanism_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- if (setting->cert_installed)
- return sysfs_emit(buf, "certificate\n");
- return sysfs_emit(buf, "password\n");
-}
-static struct kobj_attribute auth_mechanism = __ATTR_RO(mechanism);
-
-static ssize_t encoding_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%s\n", encoding_options[setting->encoding]);
-}
-
-static ssize_t encoding_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- int i;
-
- /* Scan for a matching profile */
- i = sysfs_match_string(encoding_options, buf);
- if (i < 0)
- return -EINVAL;
-
- setting->encoding = i;
- return count;
-}
-
-static struct kobj_attribute auth_encoding = __ATTR_RW(encoding);
-
-static ssize_t kbdlang_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%s\n", setting->kbdlang);
-}
-
-static ssize_t kbdlang_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- int length;
-
- /* Calculate length till '\n' or terminating 0 */
- length = strchrnul(buf, '\n') - buf;
- if (!length || length >= TLMI_LANG_MAXLEN)
- return -EINVAL;
-
- memcpy(setting->kbdlang, buf, length);
- setting->kbdlang[length] = '\0';
- return count;
-}
-
-static struct kobj_attribute auth_kbdlang = __ATTR_RW(kbdlang);
-
-static ssize_t role_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%s\n", setting->role);
-}
-static struct kobj_attribute auth_role = __ATTR_RO(role);
-
-static ssize_t index_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%d\n", setting->index);
-}
-
-static ssize_t index_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- int err, val;
-
- err = kstrtoint(buf, 10, &val);
- if (err < 0)
- return err;
-
- if (val < 0 || val > TLMI_INDEX_MAX)
- return -EINVAL;
-
- setting->index = val;
- return count;
-}
-
-static struct kobj_attribute auth_index = __ATTR_RW(index);
-
-static ssize_t level_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- return sysfs_emit(buf, "%s\n", level_options[setting->level]);
-}
-
-static ssize_t level_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- int i;
-
- /* Scan for a matching profile */
- i = sysfs_match_string(level_options, buf);
- if (i < 0)
- return -EINVAL;
-
- setting->level = i;
- return count;
-}
-
-static struct kobj_attribute auth_level = __ATTR_RW(level);
-
-static char *cert_command(struct tlmi_pwd_setting *setting, const char *arg1, const char *arg2)
-{
- /* Prepend with SVC or SMC if multicert supported */
- if (tlmi_priv.pwdcfg.core.password_mode >= TLMI_PWDCFG_MODE_MULTICERT)
- return kasprintf(GFP_KERNEL, "%s,%s,%s",
- setting == tlmi_priv.pwd_admin ? "SVC" : "SMC",
- arg1, arg2);
- else
- return kasprintf(GFP_KERNEL, "%s,%s", arg1, arg2);
-}
-
-static ssize_t cert_thumbprint(char *buf, const char *arg, int count)
-{
- const struct acpi_buffer input = { strlen(arg), (char *)arg };
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- const union acpi_object *obj;
- acpi_status status;
-
- status = wmi_evaluate_method(LENOVO_CERT_THUMBPRINT_GUID, 0, 0, &input, &output);
- if (ACPI_FAILURE(status)) {
- kfree(output.pointer);
- return -EIO;
- }
- obj = output.pointer;
- if (!obj)
- return -ENOMEM;
- if (obj->type != ACPI_TYPE_STRING || !obj->string.pointer) {
- kfree(output.pointer);
- return -EIO;
- }
- count += sysfs_emit_at(buf, count, "%s : %s\n", arg, (char *)obj->string.pointer);
- kfree(output.pointer);
-
- return count;
-}
-
-static char *thumbtypes[] = {"Md5", "Sha1", "Sha256"};
-
-static ssize_t certificate_thumbprint_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- unsigned int i;
- int count = 0;
- char *wmistr;
-
- if (!tlmi_priv.certificate_support || !setting->cert_installed)
- return -EOPNOTSUPP;
-
- for (i = 0; i < ARRAY_SIZE(thumbtypes); i++) {
- if (tlmi_priv.pwdcfg.core.password_mode >= TLMI_PWDCFG_MODE_MULTICERT) {
- /* Format: 'SVC | SMC, Thumbtype' */
- wmistr = kasprintf(GFP_KERNEL, "%s,%s",
- setting == tlmi_priv.pwd_admin ? "SVC" : "SMC",
- thumbtypes[i]);
- } else {
- /* Format: 'Thumbtype' */
- wmistr = kasprintf(GFP_KERNEL, "%s", thumbtypes[i]);
- }
- if (!wmistr)
- return -ENOMEM;
- count += cert_thumbprint(buf, wmistr, count);
- kfree(wmistr);
- }
-
- return count;
-}
-
-static struct kobj_attribute auth_cert_thumb = __ATTR_RO(certificate_thumbprint);
-
-static ssize_t cert_to_password_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- char *auth_str, *passwd;
- int ret;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (!tlmi_priv.certificate_support)
- return -EOPNOTSUPP;
-
- if (!setting->cert_installed)
- return -EINVAL;
-
- if (!setting->signature || !setting->signature[0])
- return -EACCES;
-
- /* Strip out CR if one is present */
- passwd = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!passwd)
- return -ENOMEM;
-
- /* Format: 'Password,Signature' */
- auth_str = cert_command(setting, passwd, setting->signature);
- if (!auth_str) {
- kfree_sensitive(passwd);
- return -ENOMEM;
- }
- ret = tlmi_simple_call(LENOVO_CERT_TO_PASSWORD_GUID, auth_str);
- kfree(auth_str);
- kfree_sensitive(passwd);
-
- return ret ?: count;
-}
-
-static struct kobj_attribute auth_cert_to_password = __ATTR_WO(cert_to_password);
-
-enum cert_install_mode {
- TLMI_CERT_INSTALL,
- TLMI_CERT_UPDATE,
-};
-
-static ssize_t certificate_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- enum cert_install_mode install_mode = TLMI_CERT_INSTALL;
- char *auth_str, *new_cert;
- const char *serial;
- char *signature;
- char *guid;
- int ret;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (!tlmi_priv.certificate_support)
- return -EOPNOTSUPP;
-
- /* If empty then clear installed certificate */
- if ((buf[0] == '\0') || (buf[0] == '\n')) { /* Clear installed certificate */
- /* Check that signature is set */
- if (!setting->signature || !setting->signature[0])
- return -EACCES;
-
- /* Format: 'serial#, signature' */
- serial = dmi_get_system_info(DMI_PRODUCT_SERIAL);
- if (!serial)
- return -ENODEV;
- auth_str = cert_command(setting, serial, setting->signature);
- if (!auth_str)
- return -ENOMEM;
-
- ret = tlmi_simple_call(LENOVO_CLEAR_BIOS_CERT_GUID, auth_str);
- kfree(auth_str);
-
- return ret ?: count;
- }
-
- /* Strip out CR if one is present */
- new_cert = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!new_cert)
- return -ENOMEM;
-
- if (setting->cert_installed) {
- /* Certificate is installed so this is an update */
- install_mode = TLMI_CERT_UPDATE;
- /* If admin account enabled - need to use its signature */
- if (tlmi_priv.pwd_admin->pwd_enabled)
- signature = tlmi_priv.pwd_admin->signature;
- else
- signature = setting->signature;
- } else { /* Cert install */
- /* Check if SMC and SVC already installed */
- if ((setting == tlmi_priv.pwd_system) && tlmi_priv.pwd_admin->cert_installed) {
- /* This gets treated as a cert update */
- install_mode = TLMI_CERT_UPDATE;
- signature = tlmi_priv.pwd_admin->signature;
- } else { /* Regular cert install */
- install_mode = TLMI_CERT_INSTALL;
- signature = setting->signature;
- }
- }
-
- if (install_mode == TLMI_CERT_UPDATE) {
- /* This is a certificate update */
- if (!signature || !signature[0]) {
- kfree(new_cert);
- return -EACCES;
- }
- guid = LENOVO_UPDATE_BIOS_CERT_GUID;
- /* Format: 'Certificate,Signature' */
- auth_str = cert_command(setting, new_cert, signature);
- } else {
- /* This is a fresh install */
- /* To set admin cert, a password must be enabled */
- if ((setting == tlmi_priv.pwd_admin) &&
- (!setting->pwd_enabled || !setting->password[0])) {
- kfree(new_cert);
- return -EACCES;
- }
- guid = LENOVO_SET_BIOS_CERT_GUID;
- /* Format: 'Certificate, password' */
- auth_str = cert_command(setting, new_cert, setting->password);
- }
- kfree(new_cert);
- if (!auth_str)
- return -ENOMEM;
-
- ret = tlmi_simple_call(guid, auth_str);
- kfree(auth_str);
-
- return ret ?: count;
-}
-
-static struct kobj_attribute auth_certificate = __ATTR_WO(certificate);
-
-static ssize_t signature_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- char *new_signature;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (!tlmi_priv.certificate_support)
- return -EOPNOTSUPP;
-
- /* Strip out CR if one is present */
- new_signature = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!new_signature)
- return -ENOMEM;
-
- /* Free any previous signature */
- kfree(setting->signature);
- setting->signature = new_signature;
-
- return count;
-}
-
-static struct kobj_attribute auth_signature = __ATTR_WO(signature);
-
-static ssize_t save_signature_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
- char *new_signature;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (!tlmi_priv.certificate_support)
- return -EOPNOTSUPP;
-
- /* Strip out CR if one is present */
- new_signature = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!new_signature)
- return -ENOMEM;
-
- /* Free any previous signature */
- kfree(setting->save_signature);
- setting->save_signature = new_signature;
-
- return count;
-}
-
-static struct kobj_attribute auth_save_signature = __ATTR_WO(save_signature);
-
-static umode_t auth_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- /* We only want to display level and index settings on HDD/NVMe */
- if (attr == &auth_index.attr || attr == &auth_level.attr) {
- if ((setting == tlmi_priv.pwd_hdd) || (setting == tlmi_priv.pwd_nvme))
- return attr->mode;
- return 0;
- }
-
- /* We only display certificates, if supported */
- if (attr == &auth_certificate.attr ||
- attr == &auth_signature.attr ||
- attr == &auth_save_signature.attr ||
- attr == &auth_cert_thumb.attr ||
- attr == &auth_cert_to_password.attr) {
- if (tlmi_priv.certificate_support) {
- if (setting == tlmi_priv.pwd_admin)
- return attr->mode;
- if ((tlmi_priv.pwdcfg.core.password_mode >= TLMI_PWDCFG_MODE_MULTICERT) &&
- (setting == tlmi_priv.pwd_system))
- return attr->mode;
- }
- return 0;
- }
-
- /* Don't display un-needed settings if opcode available */
- if ((attr == &auth_encoding.attr || attr == &auth_kbdlang.attr) &&
- tlmi_priv.opcode_support)
- return 0;
-
- return attr->mode;
-}
-
-static struct attribute *auth_attrs[] = {
- &auth_is_pass_set.attr,
- &auth_min_pass_length.attr,
- &auth_max_pass_length.attr,
- &auth_current_password.attr,
- &auth_new_password.attr,
- &auth_role.attr,
- &auth_mechanism.attr,
- &auth_encoding.attr,
- &auth_kbdlang.attr,
- &auth_index.attr,
- &auth_level.attr,
- &auth_certificate.attr,
- &auth_signature.attr,
- &auth_save_signature.attr,
- &auth_cert_thumb.attr,
- &auth_cert_to_password.attr,
- NULL
-};
-
-static const struct attribute_group auth_attr_group = {
- .is_visible = auth_attr_is_visible,
- .attrs = auth_attrs,
-};
-
-/* ---- Attributes sysfs --------------------------------------------------------- */
-static ssize_t display_name_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
-
- return sysfs_emit(buf, "%s\n", setting->display_name);
-}
-
-static ssize_t current_value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
- char *item, *value;
- int ret;
-
- ret = tlmi_setting(setting->wdev, setting->index, &item);
- if (ret)
- return ret;
-
- /* validate and split from `item,value` -> `value` */
- value = strpbrk(item, ",");
- if (!value || value == item || !strlen(value + 1))
- ret = -EINVAL;
- else {
- /* On Workstations remove the Options part after the value */
- strreplace(value, ';', '\0');
- ret = sysfs_emit(buf, "%s\n", value + 1);
- }
- kfree(item);
-
- return ret;
-}
-
-static ssize_t possible_values_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
-
- return sysfs_emit(buf, "%s\n", setting->possible_values);
-}
-
-static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
-
- if (setting->possible_values) {
- /* Figure out what setting type is as BIOS does not return this */
- if (strchr(setting->possible_values, ';'))
- return sysfs_emit(buf, "enumeration\n");
- }
- /* Anything else is going to be a string */
- return sysfs_emit(buf, "string\n");
-}
-
-static ssize_t current_value_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
- char *set_str = NULL, *new_setting = NULL;
- char *auth_str = NULL;
- int ret;
-
- if (!tlmi_priv.can_set_bios_settings)
- return -EOPNOTSUPP;
-
- /*
- * If we are using bulk saves a reboot should be done once save has
- * been called
- */
- if (tlmi_priv.save_mode == TLMI_SAVE_BULK && tlmi_priv.reboot_required)
- return -EPERM;
-
- /* Strip out CR if one is present */
- new_setting = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!new_setting)
- return -ENOMEM;
-
- /* Use lock in case multiple WMI operations needed */
- mutex_lock(&tlmi_mutex);
-
- /* Check if certificate authentication is enabled and active */
- if (tlmi_priv.certificate_support && tlmi_priv.pwd_admin->cert_installed) {
- if (!tlmi_priv.pwd_admin->signature || !tlmi_priv.pwd_admin->save_signature) {
- ret = -EINVAL;
- goto out;
- }
- set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->name,
- new_setting, tlmi_priv.pwd_admin->signature);
- if (!set_str) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = tlmi_simple_call(LENOVO_SET_BIOS_SETTING_CERT_GUID, set_str);
- if (ret)
- goto out;
- if (tlmi_priv.save_mode == TLMI_SAVE_BULK)
- tlmi_priv.save_required = true;
- else
- ret = tlmi_simple_call(LENOVO_SAVE_BIOS_SETTING_CERT_GUID,
- tlmi_priv.pwd_admin->save_signature);
- } else if (tlmi_priv.opcode_support) {
- /*
- * If opcode support is present use that interface.
- * Note - this sets the variable and then the password as separate
- * WMI calls. Function tlmi_save_bios_settings will error if the
- * password is incorrect.
- * Workstation's require the opcode to be set before changing the
- * attribute.
- */
- if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
- ret = tlmi_opcode_setting("WmiOpcodePasswordAdmin",
- tlmi_priv.pwd_admin->password);
- if (ret)
- goto out;
- }
-
- set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->name,
- new_setting);
- if (!set_str) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = tlmi_simple_call(LENOVO_SET_BIOS_SETTINGS_GUID, set_str);
- if (ret)
- goto out;
-
- if (tlmi_priv.save_mode == TLMI_SAVE_BULK)
- tlmi_priv.save_required = true;
- else
- ret = tlmi_save_bios_settings("");
- } else { /* old non-opcode based authentication method (deprecated) */
- if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
- auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
- tlmi_priv.pwd_admin->password,
- encoding_options[tlmi_priv.pwd_admin->encoding],
- tlmi_priv.pwd_admin->kbdlang);
- if (!auth_str) {
- ret = -ENOMEM;
- goto out;
- }
- }
-
- if (auth_str)
- set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->name,
- new_setting, auth_str);
- else
- set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->name,
- new_setting);
- if (!set_str) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = tlmi_simple_call(LENOVO_SET_BIOS_SETTINGS_GUID, set_str);
- if (ret)
- goto out;
-
- if (tlmi_priv.save_mode == TLMI_SAVE_BULK) {
- tlmi_priv.save_required = true;
- } else {
- if (auth_str)
- ret = tlmi_save_bios_settings(auth_str);
- else
- ret = tlmi_save_bios_settings("");
- }
- }
- if (!ret && !tlmi_priv.pending_changes) {
- tlmi_priv.pending_changes = true;
- /* let userland know it may need to check reboot pending again */
- kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
- }
-out:
- mutex_unlock(&tlmi_mutex);
- kfree(auth_str);
- kfree(set_str);
- kfree(new_setting);
- return ret ?: count;
-}
-
-static struct kobj_attribute attr_displ_name = __ATTR_RO(display_name);
-
-static struct kobj_attribute attr_possible_values = __ATTR_RO(possible_values);
-
-static struct kobj_attribute attr_current_val = __ATTR_RW_MODE(current_value, 0600);
-
-static struct kobj_attribute attr_type = __ATTR_RO(type);
-
-static umode_t attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
-
- /* We don't want to display possible_values attributes if not available */
- if ((attr == &attr_possible_values.attr) && (!setting->possible_values))
- return 0;
-
- return attr->mode;
-}
-
-static struct attribute *tlmi_attrs[] = {
- &attr_displ_name.attr,
- &attr_current_val.attr,
- &attr_possible_values.attr,
- &attr_type.attr,
- NULL
-};
-
-static const struct attribute_group tlmi_attr_group = {
- .is_visible = attr_is_visible,
- .attrs = tlmi_attrs,
-};
-
-static void tlmi_attr_setting_release(struct kobject *kobj)
-{
- struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
-
- kfree(setting->possible_values);
- kfree(setting);
-}
-
-static void tlmi_pwd_setting_release(struct kobject *kobj)
-{
- struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
-
- kfree(setting);
-}
-
-static const struct kobj_type tlmi_attr_setting_ktype = {
- .release = &tlmi_attr_setting_release,
- .sysfs_ops = &kobj_sysfs_ops,
-};
-
-static const struct kobj_type tlmi_pwd_setting_ktype = {
- .release = &tlmi_pwd_setting_release,
- .sysfs_ops = &kobj_sysfs_ops,
-};
-
-static ssize_t pending_reboot_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%d\n", tlmi_priv.pending_changes);
-}
-
-static struct kobj_attribute pending_reboot = __ATTR_RO(pending_reboot);
-
-static const char * const save_mode_strings[] = {
- [TLMI_SAVE_SINGLE] = "single",
- [TLMI_SAVE_BULK] = "bulk",
- [TLMI_SAVE_SAVE] = "save"
-};
-
-static ssize_t save_settings_show(struct kobject *kobj, struct kobj_attribute *attr,
- char *buf)
-{
- /* Check that setting is valid */
- if (WARN_ON(tlmi_priv.save_mode < TLMI_SAVE_SINGLE ||
- tlmi_priv.save_mode > TLMI_SAVE_BULK))
- return -EIO;
- return sysfs_emit(buf, "%s\n", save_mode_strings[tlmi_priv.save_mode]);
-}
-
-static ssize_t save_settings_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- char *auth_str = NULL;
- int ret = 0;
- int cmd;
-
- cmd = sysfs_match_string(save_mode_strings, buf);
- if (cmd < 0)
- return cmd;
-
- /* Use lock in case multiple WMI operations needed */
- mutex_lock(&tlmi_mutex);
-
- switch (cmd) {
- case TLMI_SAVE_SINGLE:
- case TLMI_SAVE_BULK:
- tlmi_priv.save_mode = cmd;
- goto out;
- case TLMI_SAVE_SAVE:
- /* Check if supported*/
- if (!tlmi_priv.can_set_bios_settings ||
- tlmi_priv.save_mode == TLMI_SAVE_SINGLE) {
- ret = -EOPNOTSUPP;
- goto out;
- }
- /* Check there is actually something to save */
- if (!tlmi_priv.save_required) {
- ret = -ENOENT;
- goto out;
- }
- /* Check if certificate authentication is enabled and active */
- if (tlmi_priv.certificate_support && tlmi_priv.pwd_admin->cert_installed) {
- if (!tlmi_priv.pwd_admin->signature ||
- !tlmi_priv.pwd_admin->save_signature) {
- ret = -EINVAL;
- goto out;
- }
- ret = tlmi_simple_call(LENOVO_SAVE_BIOS_SETTING_CERT_GUID,
- tlmi_priv.pwd_admin->save_signature);
- if (ret)
- goto out;
- } else if (tlmi_priv.opcode_support) {
- if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
- ret = tlmi_opcode_setting("WmiOpcodePasswordAdmin",
- tlmi_priv.pwd_admin->password);
- if (ret)
- goto out;
- }
- ret = tlmi_save_bios_settings("");
- } else { /* old non-opcode based authentication method (deprecated) */
- if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
- auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
- tlmi_priv.pwd_admin->password,
- encoding_options[tlmi_priv.pwd_admin->encoding],
- tlmi_priv.pwd_admin->kbdlang);
- if (!auth_str) {
- ret = -ENOMEM;
- goto out;
- }
- }
-
- if (auth_str)
- ret = tlmi_save_bios_settings(auth_str);
- else
- ret = tlmi_save_bios_settings("");
- }
- tlmi_priv.save_required = false;
- tlmi_priv.reboot_required = true;
-
- if (!ret && !tlmi_priv.pending_changes) {
- tlmi_priv.pending_changes = true;
- /* let userland know it may need to check reboot pending again */
- kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
- }
- break;
- }
-out:
- mutex_unlock(&tlmi_mutex);
- kfree(auth_str);
- return ret ?: count;
-}
-
-static struct kobj_attribute save_settings = __ATTR_RW(save_settings);
-
-/* ---- Debug interface--------------------------------------------------------- */
-static ssize_t debug_cmd_store(struct kobject *kobj, struct kobj_attribute *attr,
- const char *buf, size_t count)
-{
- char *set_str = NULL, *new_setting = NULL;
- char *auth_str = NULL;
- int ret;
-
- if (!tlmi_priv.can_debug_cmd)
- return -EOPNOTSUPP;
-
- /* Strip out CR if one is present */
- new_setting = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
- if (!new_setting)
- return -ENOMEM;
-
- if (tlmi_priv.pwd_admin->pwd_enabled && tlmi_priv.pwd_admin->password[0]) {
- auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
- tlmi_priv.pwd_admin->password,
- encoding_options[tlmi_priv.pwd_admin->encoding],
- tlmi_priv.pwd_admin->kbdlang);
- if (!auth_str) {
- ret = -ENOMEM;
- goto out;
- }
- }
-
- if (auth_str)
- set_str = kasprintf(GFP_KERNEL, "%s,%s", new_setting, auth_str);
- else
- set_str = kasprintf(GFP_KERNEL, "%s;", new_setting);
- if (!set_str) {
- ret = -ENOMEM;
- goto out;
- }
-
- ret = tlmi_simple_call(LENOVO_DEBUG_CMD_GUID, set_str);
- if (ret)
- goto out;
-
- if (!ret && !tlmi_priv.pending_changes) {
- tlmi_priv.pending_changes = true;
- /* let userland know it may need to check reboot pending again */
- kobject_uevent(&tlmi_priv.class_dev->kobj, KOBJ_CHANGE);
- }
-out:
- kfree(auth_str);
- kfree(set_str);
- kfree(new_setting);
- return ret ?: count;
-}
-
-static struct kobj_attribute debug_cmd = __ATTR_WO(debug_cmd);
-
-/* ---- Initialisation --------------------------------------------------------- */
-static void tlmi_release_attr(void)
-{
- int i;
-
- /* Attribute structures */
- for (i = 0; i < TLMI_SETTINGS_COUNT; i++) {
- if (tlmi_priv.setting[i]) {
- sysfs_remove_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
- kobject_put(&tlmi_priv.setting[i]->kobj);
- }
- }
- sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
- sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &save_settings.attr);
-
- if (tlmi_priv.can_debug_cmd && debug_support)
- sysfs_remove_file(&tlmi_priv.attribute_kset->kobj, &debug_cmd.attr);
-
- kset_unregister(tlmi_priv.attribute_kset);
-
- /* Free up any saved signatures */
- kfree(tlmi_priv.pwd_admin->signature);
- kfree(tlmi_priv.pwd_admin->save_signature);
-
- /* Authentication structures */
- sysfs_remove_group(&tlmi_priv.pwd_admin->kobj, &auth_attr_group);
- kobject_put(&tlmi_priv.pwd_admin->kobj);
- sysfs_remove_group(&tlmi_priv.pwd_power->kobj, &auth_attr_group);
- kobject_put(&tlmi_priv.pwd_power->kobj);
-
- if (tlmi_priv.opcode_support) {
- sysfs_remove_group(&tlmi_priv.pwd_system->kobj, &auth_attr_group);
- kobject_put(&tlmi_priv.pwd_system->kobj);
- sysfs_remove_group(&tlmi_priv.pwd_hdd->kobj, &auth_attr_group);
- kobject_put(&tlmi_priv.pwd_hdd->kobj);
- sysfs_remove_group(&tlmi_priv.pwd_nvme->kobj, &auth_attr_group);
- kobject_put(&tlmi_priv.pwd_nvme->kobj);
- }
-
- kset_unregister(tlmi_priv.authentication_kset);
-}
-
-static int tlmi_validate_setting_name(struct kset *attribute_kset, char *name)
-{
- struct kobject *duplicate;
-
- if (!strcmp(name, "Reserved"))
- return -EINVAL;
-
- duplicate = kset_find_obj(attribute_kset, name);
- if (duplicate) {
- pr_debug("Duplicate attribute name found - %s\n", name);
- /* kset_find_obj() returns a reference */
- kobject_put(duplicate);
- return -EBUSY;
- }
-
- return 0;
-}
-
-static int tlmi_sysfs_init(void)
-{
- int i, ret;
-
- tlmi_priv.class_dev = device_create(&firmware_attributes_class, NULL, MKDEV(0, 0),
- NULL, "%s", "thinklmi");
- if (IS_ERR(tlmi_priv.class_dev)) {
- ret = PTR_ERR(tlmi_priv.class_dev);
- goto fail_class_created;
- }
-
- tlmi_priv.attribute_kset = kset_create_and_add("attributes", NULL,
- &tlmi_priv.class_dev->kobj);
- if (!tlmi_priv.attribute_kset) {
- ret = -ENOMEM;
- goto fail_device_created;
- }
-
- for (i = 0; i < TLMI_SETTINGS_COUNT; i++) {
- /* Check if index is a valid setting - skip if it isn't */
- if (!tlmi_priv.setting[i])
- continue;
-
- /* check for duplicate or reserved values */
- if (tlmi_validate_setting_name(tlmi_priv.attribute_kset,
- tlmi_priv.setting[i]->display_name) < 0) {
- kfree(tlmi_priv.setting[i]->possible_values);
- kfree(tlmi_priv.setting[i]);
- tlmi_priv.setting[i] = NULL;
- continue;
- }
-
- /* Build attribute */
- tlmi_priv.setting[i]->kobj.kset = tlmi_priv.attribute_kset;
- ret = kobject_add(&tlmi_priv.setting[i]->kobj, NULL,
- "%s", tlmi_priv.setting[i]->display_name);
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
- if (ret)
- goto fail_create_attr;
- }
-
- ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &pending_reboot.attr);
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &save_settings.attr);
- if (ret)
- goto fail_create_attr;
-
- if (tlmi_priv.can_debug_cmd && debug_support) {
- ret = sysfs_create_file(&tlmi_priv.attribute_kset->kobj, &debug_cmd.attr);
- if (ret)
- goto fail_create_attr;
- }
-
- /* Create authentication entries */
- tlmi_priv.authentication_kset = kset_create_and_add("authentication", NULL,
- &tlmi_priv.class_dev->kobj);
- if (!tlmi_priv.authentication_kset) {
- ret = -ENOMEM;
- goto fail_create_attr;
- }
- tlmi_priv.pwd_admin->kobj.kset = tlmi_priv.authentication_kset;
- ret = kobject_add(&tlmi_priv.pwd_admin->kobj, NULL, "%s", "Admin");
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_group(&tlmi_priv.pwd_admin->kobj, &auth_attr_group);
- if (ret)
- goto fail_create_attr;
-
- tlmi_priv.pwd_power->kobj.kset = tlmi_priv.authentication_kset;
- ret = kobject_add(&tlmi_priv.pwd_power->kobj, NULL, "%s", "Power-on");
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_group(&tlmi_priv.pwd_power->kobj, &auth_attr_group);
- if (ret)
- goto fail_create_attr;
-
- if (tlmi_priv.opcode_support) {
- tlmi_priv.pwd_system->kobj.kset = tlmi_priv.authentication_kset;
- ret = kobject_add(&tlmi_priv.pwd_system->kobj, NULL, "%s", "System");
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_group(&tlmi_priv.pwd_system->kobj, &auth_attr_group);
- if (ret)
- goto fail_create_attr;
-
- tlmi_priv.pwd_hdd->kobj.kset = tlmi_priv.authentication_kset;
- ret = kobject_add(&tlmi_priv.pwd_hdd->kobj, NULL, "%s", "HDD");
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_group(&tlmi_priv.pwd_hdd->kobj, &auth_attr_group);
- if (ret)
- goto fail_create_attr;
-
- tlmi_priv.pwd_nvme->kobj.kset = tlmi_priv.authentication_kset;
- ret = kobject_add(&tlmi_priv.pwd_nvme->kobj, NULL, "%s", "NVMe");
- if (ret)
- goto fail_create_attr;
-
- ret = sysfs_create_group(&tlmi_priv.pwd_nvme->kobj, &auth_attr_group);
- if (ret)
- goto fail_create_attr;
- }
-
- return ret;
-
-fail_create_attr:
- tlmi_release_attr();
-fail_device_created:
- device_destroy(&firmware_attributes_class, MKDEV(0, 0));
-fail_class_created:
- return ret;
-}
-
-/* ---- Base Driver -------------------------------------------------------- */
-static struct tlmi_pwd_setting *tlmi_create_auth(const char *pwd_type,
- const char *pwd_role)
-{
- struct tlmi_pwd_setting *new_pwd;
-
- new_pwd = kzalloc(sizeof(struct tlmi_pwd_setting), GFP_KERNEL);
- if (!new_pwd)
- return NULL;
-
- strscpy(new_pwd->kbdlang, "us");
- new_pwd->encoding = TLMI_ENCODING_ASCII;
- new_pwd->pwd_type = pwd_type;
- new_pwd->role = pwd_role;
- new_pwd->minlen = tlmi_priv.pwdcfg.core.min_length;
- new_pwd->maxlen = tlmi_priv.pwdcfg.core.max_length;
- new_pwd->index = 0;
-
- kobject_init(&new_pwd->kobj, &tlmi_pwd_setting_ktype);
-
- return new_pwd;
-}
-
-static int tlmi_analyze(struct wmi_device *wdev)
-{
- int i, ret;
-
- if (wmi_has_guid(LENOVO_SET_BIOS_SETTINGS_GUID) &&
- wmi_has_guid(LENOVO_SAVE_BIOS_SETTINGS_GUID))
- tlmi_priv.can_set_bios_settings = true;
-
- if (wmi_has_guid(LENOVO_GET_BIOS_SELECTIONS_GUID))
- tlmi_priv.can_get_bios_selections = true;
-
- if (wmi_has_guid(LENOVO_SET_BIOS_PASSWORD_GUID))
- tlmi_priv.can_set_bios_password = true;
-
- if (wmi_has_guid(LENOVO_BIOS_PASSWORD_SETTINGS_GUID))
- tlmi_priv.can_get_password_settings = true;
-
- if (wmi_has_guid(LENOVO_DEBUG_CMD_GUID))
- tlmi_priv.can_debug_cmd = true;
-
- if (wmi_has_guid(LENOVO_OPCODE_IF_GUID))
- tlmi_priv.opcode_support = true;
-
- if (wmi_has_guid(LENOVO_SET_BIOS_CERT_GUID) &&
- wmi_has_guid(LENOVO_SET_BIOS_SETTING_CERT_GUID) &&
- wmi_has_guid(LENOVO_SAVE_BIOS_SETTING_CERT_GUID))
- tlmi_priv.certificate_support = true;
-
- /*
- * Try to find the number of valid settings of this machine
- * and use it to create sysfs attributes.
- */
- for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) {
- struct tlmi_attr_setting *setting;
- char *item = NULL;
-
- tlmi_priv.setting[i] = NULL;
- ret = tlmi_setting(wdev, i, &item);
- if (ret)
- break;
- if (!item)
- break;
- if (!*item) {
- kfree(item);
- continue;
- }
-
- /* Remove the value part */
- strreplace(item, ',', '\0');
-
- /* Create a setting entry */
- setting = kzalloc(sizeof(*setting), GFP_KERNEL);
- if (!setting) {
- ret = -ENOMEM;
- kfree(item);
- goto fail_clear_attr;
- }
- setting->wdev = wdev;
- setting->index = i;
-
- strscpy(setting->name, item);
- /* It is not allowed to have '/' for file name. Convert it into '\'. */
- strreplace(item, '/', '\\');
- strscpy(setting->display_name, item);
-
- /* If BIOS selections supported, load those */
- if (tlmi_priv.can_get_bios_selections) {
- ret = tlmi_get_bios_selections(setting->name,
- &setting->possible_values);
- if (ret || !setting->possible_values)
- pr_info("Error retrieving possible values for %d : %s\n",
- i, setting->display_name);
- } else {
- /*
- * Older Thinkstations don't support the bios_selections API.
- * Instead they store this as a [Optional:Option1,Option2] section of the
- * name string.
- * Try and pull that out if it's available.
- */
- char *optitem, *optstart, *optend;
-
- if (!tlmi_setting(setting->wdev, setting->index, &optitem)) {
- optstart = strstr(optitem, "[Optional:");
- if (optstart) {
- optstart += strlen("[Optional:");
- optend = strstr(optstart, "]");
- if (optend)
- setting->possible_values =
- kstrndup(optstart, optend - optstart,
- GFP_KERNEL);
- }
- kfree(optitem);
- }
- }
- /*
- * firmware-attributes requires that possible_values are separated by ';' but
- * Lenovo FW uses ','. Replace appropriately.
- */
- if (setting->possible_values)
- strreplace(setting->possible_values, ',', ';');
-
- kobject_init(&setting->kobj, &tlmi_attr_setting_ktype);
- tlmi_priv.setting[i] = setting;
- kfree(item);
- }
-
- /* Create password setting structure */
- ret = tlmi_get_pwd_settings(&tlmi_priv.pwdcfg);
- if (ret)
- goto fail_clear_attr;
-
- /* All failures below boil down to kmalloc failures */
- ret = -ENOMEM;
-
- tlmi_priv.pwd_admin = tlmi_create_auth("pap", "bios-admin");
- if (!tlmi_priv.pwd_admin)
- goto fail_clear_attr;
-
- if (tlmi_priv.pwdcfg.core.password_state & TLMI_PAP_PWD)
- tlmi_priv.pwd_admin->pwd_enabled = true;
-
- tlmi_priv.pwd_power = tlmi_create_auth("pop", "power-on");
- if (!tlmi_priv.pwd_power)
- goto fail_clear_attr;
-
- if (tlmi_priv.pwdcfg.core.password_state & TLMI_POP_PWD)
- tlmi_priv.pwd_power->pwd_enabled = true;
-
- if (tlmi_priv.opcode_support) {
- tlmi_priv.pwd_system = tlmi_create_auth("smp", "system");
- if (!tlmi_priv.pwd_system)
- goto fail_clear_attr;
-
- if (tlmi_priv.pwdcfg.core.password_state & TLMI_SMP_PWD)
- tlmi_priv.pwd_system->pwd_enabled = true;
-
- tlmi_priv.pwd_hdd = tlmi_create_auth("hdd", "hdd");
- if (!tlmi_priv.pwd_hdd)
- goto fail_clear_attr;
-
- tlmi_priv.pwd_nvme = tlmi_create_auth("nvm", "nvme");
- if (!tlmi_priv.pwd_nvme)
- goto fail_clear_attr;
-
- /* Set default hdd/nvme index to 1 as there is no device 0 */
- tlmi_priv.pwd_hdd->index = 1;
- tlmi_priv.pwd_nvme->index = 1;
-
- if (tlmi_priv.pwdcfg.core.password_state & TLMI_HDD_PWD) {
- /* Check if PWD is configured and set index to first drive found */
- if (tlmi_priv.pwdcfg.ext.hdd_user_password ||
- tlmi_priv.pwdcfg.ext.hdd_master_password) {
- tlmi_priv.pwd_hdd->pwd_enabled = true;
- if (tlmi_priv.pwdcfg.ext.hdd_master_password)
- tlmi_priv.pwd_hdd->index =
- ffs(tlmi_priv.pwdcfg.ext.hdd_master_password) - 1;
- else
- tlmi_priv.pwd_hdd->index =
- ffs(tlmi_priv.pwdcfg.ext.hdd_user_password) - 1;
- }
- if (tlmi_priv.pwdcfg.ext.nvme_user_password ||
- tlmi_priv.pwdcfg.ext.nvme_master_password) {
- tlmi_priv.pwd_nvme->pwd_enabled = true;
- if (tlmi_priv.pwdcfg.ext.nvme_master_password)
- tlmi_priv.pwd_nvme->index =
- ffs(tlmi_priv.pwdcfg.ext.nvme_master_password) - 1;
- else
- tlmi_priv.pwd_nvme->index =
- ffs(tlmi_priv.pwdcfg.ext.nvme_user_password) - 1;
- }
- }
- }
-
- if (tlmi_priv.certificate_support) {
- tlmi_priv.pwd_admin->cert_installed =
- tlmi_priv.pwdcfg.core.password_state & TLMI_CERT_SVC;
- tlmi_priv.pwd_system->cert_installed =
- tlmi_priv.pwdcfg.core.password_state & TLMI_CERT_SMC;
- }
- return 0;
-
-fail_clear_attr:
- for (i = 0; i < TLMI_SETTINGS_COUNT; ++i) {
- if (tlmi_priv.setting[i]) {
- kfree(tlmi_priv.setting[i]->possible_values);
- kfree(tlmi_priv.setting[i]);
- }
- }
- kfree(tlmi_priv.pwd_admin);
- kfree(tlmi_priv.pwd_power);
- kfree(tlmi_priv.pwd_system);
- kfree(tlmi_priv.pwd_hdd);
- kfree(tlmi_priv.pwd_nvme);
- return ret;
-}
-
-static void tlmi_remove(struct wmi_device *wdev)
-{
- tlmi_release_attr();
- device_destroy(&firmware_attributes_class, MKDEV(0, 0));
-}
-
-static int tlmi_probe(struct wmi_device *wdev, const void *context)
-{
- int ret;
-
- ret = tlmi_analyze(wdev);
- if (ret)
- return ret;
-
- return tlmi_sysfs_init();
-}
-
-static const struct wmi_device_id tlmi_id_table[] = {
- { .guid_string = LENOVO_BIOS_SETTING_GUID },
- { }
-};
-MODULE_DEVICE_TABLE(wmi, tlmi_id_table);
-
-static struct wmi_driver tlmi_driver = {
- .driver = {
- .name = "think-lmi",
- },
- .id_table = tlmi_id_table,
- .probe = tlmi_probe,
- .remove = tlmi_remove,
-};
-
-MODULE_AUTHOR("Sugumaran L <slacshiminar@lenovo.com>");
-MODULE_AUTHOR("Mark Pearson <markpearson@lenovo.com>");
-MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");
-MODULE_DESCRIPTION("ThinkLMI Driver");
-MODULE_LICENSE("GPL");
-
-module_wmi_driver(tlmi_driver);
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
-#ifndef _THINK_LMI_H_
-#define _THINK_LMI_H_
-
-#include <linux/types.h>
-#include <linux/wmi.h>
-
-#define TLMI_SETTINGS_COUNT 256
-#define TLMI_SETTINGS_MAXLEN 512
-#define TLMI_PWD_BUFSIZE 129
-#define TLMI_LANG_MAXLEN 4
-#define TLMI_INDEX_MAX 32
-
-/* Possible error values */
-struct tlmi_err_codes {
- const char *err_str;
- int err_code;
-};
-
-enum encoding_option {
- TLMI_ENCODING_ASCII,
- TLMI_ENCODING_SCANCODE,
-};
-
-enum level_option {
- TLMI_LEVEL_USER,
- TLMI_LEVEL_MASTER,
-};
-
-/*
- * There are a limit on the number of WMI operations you can do if you use
- * the default implementation of saving on every set. This is due to a
- * limitation in EFI variable space used.
- * Have a 'bulk save' mode where you can manually trigger the save, and can
- * therefore set unlimited variables - for users that need it.
- */
-enum save_mode {
- TLMI_SAVE_SINGLE,
- TLMI_SAVE_BULK,
- TLMI_SAVE_SAVE,
-};
-
-/* password configuration details */
-#define TLMI_PWDCFG_MODE_LEGACY 0
-#define TLMI_PWDCFG_MODE_PASSWORD 1
-#define TLMI_PWDCFG_MODE_MULTICERT 3
-
-struct tlmi_pwdcfg_core {
- uint32_t password_mode;
- uint32_t password_state;
- uint32_t min_length;
- uint32_t max_length;
- uint32_t supported_encodings;
- uint32_t supported_keyboard;
-};
-
-struct tlmi_pwdcfg_ext {
- uint32_t hdd_user_password;
- uint32_t hdd_master_password;
- uint32_t nvme_user_password;
- uint32_t nvme_master_password;
-};
-
-struct tlmi_pwdcfg {
- struct tlmi_pwdcfg_core core;
- struct tlmi_pwdcfg_ext ext;
-};
-
-/* password setting details */
-struct tlmi_pwd_setting {
- struct kobject kobj;
- bool pwd_enabled;
- char password[TLMI_PWD_BUFSIZE];
- const char *pwd_type;
- const char *role;
- int minlen;
- int maxlen;
- enum encoding_option encoding;
- char kbdlang[TLMI_LANG_MAXLEN];
- int index; /*Used for HDD and NVME auth */
- enum level_option level;
- bool cert_installed;
- char *signature;
- char *save_signature;
-};
-
-/* Attribute setting details */
-struct tlmi_attr_setting {
- struct kobject kobj;
- struct wmi_device *wdev;
- int index;
- char name[TLMI_SETTINGS_MAXLEN];
- char display_name[TLMI_SETTINGS_MAXLEN];
- char *possible_values;
-};
-
-struct think_lmi {
- struct wmi_device *wmi_device;
-
- bool can_set_bios_settings;
- bool can_get_bios_selections;
- bool can_set_bios_password;
- bool can_get_password_settings;
- bool pending_changes;
- bool can_debug_cmd;
- bool opcode_support;
- bool certificate_support;
- enum save_mode save_mode;
- bool save_required;
- bool reboot_required;
-
- struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
- struct device *class_dev;
- struct kset *attribute_kset;
- struct kset *authentication_kset;
-
- struct tlmi_pwdcfg pwdcfg;
- struct tlmi_pwd_setting *pwd_admin;
- struct tlmi_pwd_setting *pwd_power;
- struct tlmi_pwd_setting *pwd_system;
- struct tlmi_pwd_setting *pwd_hdd;
- struct tlmi_pwd_setting *pwd_nvme;
-};
-
-#endif /* !_THINK_LMI_H_ */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * thinkpad_acpi.c - ThinkPad ACPI Extras
- *
- * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
- * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define TPACPI_VERSION "0.26"
-#define TPACPI_SYSFS_VERSION 0x030000
-
-/*
- * Changelog:
- * 2007-10-20 changelog trimmed down
- *
- * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
- * drivers/misc.
- *
- * 2006-11-22 0.13 new maintainer
- * changelog now lives in git commit history, and will
- * not be updated further in-file.
- *
- * 2005-03-17 0.11 support for 600e, 770x
- * thanks to Jamie Lentin <lentinj@dial.pipex.com>
- *
- * 2005-01-16 0.9 use MODULE_VERSION
- * thanks to Henrik Brix Andersen <brix@gentoo.org>
- * fix parameter passing on module loading
- * thanks to Rusty Russell <rusty@rustcorp.com.au>
- * thanks to Jim Radford <radford@blackbean.org>
- * 2004-11-08 0.8 fix init error case, don't return from a macro
- * thanks to Chris Wright <chrisw@osdl.org>
- */
-
-#include <linux/acpi.h>
-#include <linux/backlight.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-#include <linux/dmi.h>
-#include <linux/freezer.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/kthread.h>
-#include <linux/leds.h>
-#include <linux/list.h>
-#include <linux/lockdep.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/nvram.h>
-#include <linux/pci.h>
-#include <linux/platform_device.h>
-#include <linux/platform_profile.h>
-#include <linux/power_supply.h>
-#include <linux/proc_fs.h>
-#include <linux/rfkill.h>
-#include <linux/sched.h>
-#include <linux/sched/signal.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/string_helpers.h>
-#include <linux/sysfs.h>
-#include <linux/types.h>
-#include <linux/uaccess.h>
-#include <linux/units.h>
-#include <linux/workqueue.h>
-
-#include <acpi/battery.h>
-#include <acpi/video.h>
-
-#include <drm/drm_privacy_screen_driver.h>
-
-#include <sound/control.h>
-#include <sound/core.h>
-#include <sound/initval.h>
-
-#include "dual_accel_detect.h"
-
-/* ThinkPad CMOS commands */
-#define TP_CMOS_VOLUME_DOWN 0
-#define TP_CMOS_VOLUME_UP 1
-#define TP_CMOS_VOLUME_MUTE 2
-#define TP_CMOS_BRIGHTNESS_UP 4
-#define TP_CMOS_BRIGHTNESS_DOWN 5
-#define TP_CMOS_THINKLIGHT_ON 12
-#define TP_CMOS_THINKLIGHT_OFF 13
-
-/* NVRAM Addresses */
-enum tp_nvram_addr {
- TP_NVRAM_ADDR_HK2 = 0x57,
- TP_NVRAM_ADDR_THINKLIGHT = 0x58,
- TP_NVRAM_ADDR_VIDEO = 0x59,
- TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
- TP_NVRAM_ADDR_MIXER = 0x60,
-};
-
-/* NVRAM bit masks */
-enum {
- TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
- TP_NVRAM_MASK_HKT_ZOOM = 0x20,
- TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
- TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
- TP_NVRAM_MASK_THINKLIGHT = 0x10,
- TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
- TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
- TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
- TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
- TP_NVRAM_MASK_MUTE = 0x40,
- TP_NVRAM_MASK_HKT_VOLUME = 0x80,
- TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
- TP_NVRAM_POS_LEVEL_VOLUME = 0,
-};
-
-/* Misc NVRAM-related */
-enum {
- TP_NVRAM_LEVEL_VOLUME_MAX = 14,
-};
-
-/* ACPI HIDs */
-#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
-#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
-#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
-#define TPACPI_ACPI_EC_HID "PNP0C09"
-
-/* Input IDs */
-#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
-#define TPACPI_HKEY_INPUT_VERSION 0x4101
-
-/* ACPI \WGSV commands */
-enum {
- TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
- TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
- TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
- TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
-};
-
-/* TP_ACPI_WGSV_GET_STATE bits */
-enum {
- TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
- TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
- TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
- TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
- TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
- TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
- TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
- TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
- TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
- TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
-};
-
-/* HKEY events */
-enum tpacpi_hkey_event_t {
- /* Original hotkeys */
- TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */
- TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
- TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
- TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
- TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
- TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
- TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
- TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */
-
- /* Adaptive keyboard (2014 X1 Carbon) */
- TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */
- TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */
- TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */
- TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */
-
- /* Extended hotkey events in 2017+ models */
- TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */
- TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */
- TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using
- * hkey -> scancode translation for
- * compat. Later codes are entered
- * directly in the sparse-keymap.
- */
- TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */
- TP_HKEY_EV_CAMERASHUTTER_TOGGLE = 0x131b, /* Toggle Camera Shutter */
- TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */
- TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */
- TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */
-
- /* Reasons for waking up from S3/S4 */
- TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
- TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
- TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
- TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
- TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
- TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
-
- /* Auto-sleep after eject request */
- TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
- TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
-
- /* Misc bay events */
- TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
- TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
- or port replicator */
- TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
- dock or port replicator */
- /*
- * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013
- * when keyboard cover is attached, detached or folded onto the back
- */
- TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */
- TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */
-
- /* User-interface events */
- TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
- TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
- TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
- TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
- TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
- * enter/leave tablet mode
- */
- TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
- TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
- TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
-
- /* Key-related user-interface events */
- TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
- TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
- TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
-
- /* Thermal events */
- TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
- TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
- TP_HKEY_EV_ALARM_BAT_LIM_CHANGE = 0x6013, /* battery charge limit changed*/
- TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
- TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
- TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */
- TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set
- * command completed. Related to
- * AML DYTC */
- TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation
- * changed. Related to AML GMTS */
-
- /* AC-related events */
- TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
-
- /* Further user-interface events */
- TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
- TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
-
- /* Misc */
- TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
-
- /* Misc2 */
- TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */
-};
-
-/****************************************************************************
- * Main driver
- */
-
-#define TPACPI_NAME "thinkpad"
-#define TPACPI_DESC "ThinkPad ACPI Extras"
-#define TPACPI_FILE TPACPI_NAME "_acpi"
-#define TPACPI_URL "http://ibm-acpi.sf.net/"
-#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
-
-#define TPACPI_PROC_DIR "ibm"
-#define TPACPI_ACPI_EVENT_PREFIX "ibm"
-#define TPACPI_DRVR_NAME TPACPI_FILE
-#define TPACPI_DRVR_SHORTNAME "tpacpi"
-#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
-
-#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
-#define TPACPI_WORKQUEUE_NAME "ktpacpid"
-
-#define TPACPI_MAX_ACPI_ARGS 3
-
-/* Debugging printk groups */
-#define TPACPI_DBG_ALL 0xffff
-#define TPACPI_DBG_DISCLOSETASK 0x8000
-#define TPACPI_DBG_INIT 0x0001
-#define TPACPI_DBG_EXIT 0x0002
-#define TPACPI_DBG_RFKILL 0x0004
-#define TPACPI_DBG_HKEY 0x0008
-#define TPACPI_DBG_FAN 0x0010
-#define TPACPI_DBG_BRGHT 0x0020
-#define TPACPI_DBG_MIXER 0x0040
-
-#define FAN_NOT_PRESENT 65535
-
-/****************************************************************************
- * Driver-wide structs and misc. variables
- */
-
-struct ibm_struct;
-
-struct tp_acpi_drv_struct {
- const struct acpi_device_id *hid;
- struct acpi_driver *driver;
-
- void (*notify) (struct ibm_struct *, u32);
- acpi_handle *handle;
- u32 type;
- struct acpi_device *device;
-};
-
-struct ibm_struct {
- char *name;
-
- int (*read) (struct seq_file *);
- int (*write) (char *);
- void (*exit) (void);
- void (*resume) (void);
- void (*suspend) (void);
- void (*shutdown) (void);
-
- struct list_head all_drivers;
-
- struct tp_acpi_drv_struct *acpi;
-
- struct {
- u8 acpi_driver_registered:1;
- u8 acpi_notify_installed:1;
- u8 proc_created:1;
- u8 init_called:1;
- u8 experimental:1;
- } flags;
-};
-
-struct ibm_init_struct {
- char param[32];
-
- int (*init) (struct ibm_init_struct *);
- umode_t base_procfs_mode;
- struct ibm_struct *data;
-};
-
-/* DMI Quirks */
-struct quirk_entry {
- bool btusb_bug;
-};
-
-static struct quirk_entry quirk_btusb_bug = {
- .btusb_bug = true,
-};
-
-static struct {
- u32 bluetooth:1;
- u32 hotkey:1;
- u32 hotkey_mask:1;
- u32 hotkey_wlsw:1;
- enum {
- TP_HOTKEY_TABLET_NONE = 0,
- TP_HOTKEY_TABLET_USES_MHKG,
- TP_HOTKEY_TABLET_USES_GMMS,
- } hotkey_tablet;
- u32 kbdlight:1;
- u32 light:1;
- u32 light_status:1;
- u32 bright_acpimode:1;
- u32 bright_unkfw:1;
- u32 wan:1;
- u32 uwb:1;
- u32 fan_ctrl_status_undef:1;
- u32 second_fan:1;
- u32 second_fan_ctl:1;
- u32 beep_needs_two_args:1;
- u32 mixer_no_level_control:1;
- u32 battery_force_primary:1;
- u32 platform_drv_registered:1;
- u32 hotkey_poll_active:1;
- u32 has_adaptive_kbd:1;
- u32 kbd_lang:1;
- u32 trackpoint_doubletap:1;
- struct quirk_entry *quirks;
-} tp_features;
-
-static struct {
- u16 hotkey_mask_ff:1;
- u16 volume_ctrl_forbidden:1;
-} tp_warned;
-
-struct thinkpad_id_data {
- unsigned int vendor; /* ThinkPad vendor:
- * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
-
- char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
- char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
-
- u32 bios_model; /* 1Y = 0x3159, 0 = unknown */
- u32 ec_model;
- u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */
- u16 ec_release;
-
- char *model_str; /* ThinkPad T43 */
- char *nummodel_str; /* 9384A9C for a 9384-A9C model */
-};
-static struct thinkpad_id_data thinkpad_id;
-
-static enum {
- TPACPI_LIFE_INIT = 0,
- TPACPI_LIFE_RUNNING,
- TPACPI_LIFE_EXITING,
-} tpacpi_lifecycle;
-
-static int experimental;
-static u32 dbg_level;
-
-static struct workqueue_struct *tpacpi_wq;
-
-enum led_status_t {
- TPACPI_LED_OFF = 0,
- TPACPI_LED_ON,
- TPACPI_LED_BLINK,
-};
-
-/* tpacpi LED class */
-struct tpacpi_led_classdev {
- struct led_classdev led_classdev;
- int led;
-};
-
-/* brightness level capabilities */
-static unsigned int bright_maxlvl; /* 0 = unknown */
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
-static int dbg_wlswemul;
-static bool tpacpi_wlsw_emulstate;
-static int dbg_bluetoothemul;
-static bool tpacpi_bluetooth_emulstate;
-static int dbg_wwanemul;
-static bool tpacpi_wwan_emulstate;
-static int dbg_uwbemul;
-static bool tpacpi_uwb_emulstate;
-#endif
-
-
-/*************************************************************************
- * Debugging helpers
- */
-
-#define dbg_printk(a_dbg_level, format, arg...) \
-do { \
- if (dbg_level & (a_dbg_level)) \
- printk(KERN_DEBUG pr_fmt("%s: " format), \
- __func__, ##arg); \
-} while (0)
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUG
-#define vdbg_printk dbg_printk
-static const char *str_supported(int is_supported);
-#else
-static inline const char *str_supported(int is_supported) { return ""; }
-#define vdbg_printk(a_dbg_level, format, arg...) \
- do { if (0) no_printk(format, ##arg); } while (0)
-#endif
-
-static void tpacpi_log_usertask(const char * const what)
-{
- printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
- what, task_tgid_vnr(current));
-}
-
-#define tpacpi_disclose_usertask(what, format, arg...) \
-do { \
- if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
- (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
- printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
- what, task_tgid_vnr(current), ## arg); \
- } \
-} while (0)
-
-/*
- * Quirk handling helpers
- *
- * ThinkPad IDs and versions seen in the field so far are
- * two or three characters from the set [0-9A-Z], i.e. base 36.
- *
- * We use values well outside that range as specials.
- */
-
-#define TPACPI_MATCH_ANY 0xffffffffU
-#define TPACPI_MATCH_ANY_VERSION 0xffffU
-#define TPACPI_MATCH_UNKNOWN 0U
-
-/* TPID('1', 'Y') == 0x3159 */
-#define TPID(__c1, __c2) (((__c1) << 8) | (__c2))
-#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))
-#define TPVER TPID
-
-#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_IBM, \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = (__quirk) }
-
-#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = (__quirk) }
-
-#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPID3(__id1, __id2, __id3), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = (__quirk) }
-
-#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_IBM, \
- .bios = TPACPI_MATCH_ANY, \
- .ec = TPID(__id1, __id2), \
- .quirks = (__quirk) }
-
-#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPACPI_MATCH_ANY, \
- .ec = TPID(__id1, __id2), \
- .quirks = (__quirk) }
-
-struct tpacpi_quirk {
- unsigned int vendor;
- u32 bios;
- u32 ec;
- unsigned long quirks;
-};
-
-/**
- * tpacpi_check_quirks() - search BIOS/EC version on a list
- * @qlist: array of &struct tpacpi_quirk
- * @qlist_size: number of elements in @qlist
- *
- * Iterates over a quirks list until one is found that matches the
- * ThinkPad's vendor, BIOS and EC model.
- *
- * Returns: %0 if nothing matches, otherwise returns the quirks field of
- * the matching &struct tpacpi_quirk entry.
- *
- * The match criteria is: vendor, ec and bios must match.
- */
-static unsigned long __init tpacpi_check_quirks(
- const struct tpacpi_quirk *qlist,
- unsigned int qlist_size)
-{
- while (qlist_size) {
- if ((qlist->vendor == thinkpad_id.vendor ||
- qlist->vendor == TPACPI_MATCH_ANY) &&
- (qlist->bios == thinkpad_id.bios_model ||
- qlist->bios == TPACPI_MATCH_ANY) &&
- (qlist->ec == thinkpad_id.ec_model ||
- qlist->ec == TPACPI_MATCH_ANY))
- return qlist->quirks;
-
- qlist_size--;
- qlist++;
- }
- return 0;
-}
-
-static inline bool __pure __init tpacpi_is_lenovo(void)
-{
- return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
-}
-
-static inline bool __pure __init tpacpi_is_ibm(void)
-{
- return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
-}
-
-/****************************************************************************
- ****************************************************************************
- *
- * ACPI Helpers and device model
- *
- ****************************************************************************
- ****************************************************************************/
-
-/*************************************************************************
- * ACPI basic handles
- */
-
-static acpi_handle root_handle;
-static acpi_handle ec_handle;
-
-#define TPACPI_HANDLE(object, parent, paths...) \
- static acpi_handle object##_handle; \
- static const acpi_handle * const object##_parent __initconst = \
- &parent##_handle; \
- static char *object##_paths[] __initdata = { paths }
-
-TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
-TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
-
-TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
- /* T4x, X31, X40 */
- "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
- "\\CMS", /* R40, R40e */
- ); /* all others */
-
-TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
- "^HKEY", /* R30, R31 */
- "HKEY", /* all others */
- ); /* 570 */
-
-/*************************************************************************
- * ACPI helpers
- */
-
-static int acpi_evalf(acpi_handle handle,
- int *res, char *method, char *fmt, ...)
-{
- char *fmt0 = fmt;
- struct acpi_object_list params;
- union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
- struct acpi_buffer result, *resultp;
- union acpi_object out_obj;
- acpi_status status;
- va_list ap;
- char res_type;
- int success;
- int quiet;
-
- if (!*fmt) {
- pr_err("acpi_evalf() called with empty format\n");
- return 0;
- }
-
- if (*fmt == 'q') {
- quiet = 1;
- fmt++;
- } else
- quiet = 0;
-
- res_type = *(fmt++);
-
- params.count = 0;
- params.pointer = &in_objs[0];
-
- va_start(ap, fmt);
- while (*fmt) {
- char c = *(fmt++);
- switch (c) {
- case 'd': /* int */
- in_objs[params.count].integer.value = va_arg(ap, int);
- in_objs[params.count++].type = ACPI_TYPE_INTEGER;
- break;
- /* add more types as needed */
- default:
- pr_err("acpi_evalf() called with invalid format character '%c'\n",
- c);
- va_end(ap);
- return 0;
- }
- }
- va_end(ap);
-
- if (res_type != 'v') {
- result.length = sizeof(out_obj);
- result.pointer = &out_obj;
- resultp = &result;
- } else
- resultp = NULL;
-
- status = acpi_evaluate_object(handle, method, ¶ms, resultp);
-
- switch (res_type) {
- case 'd': /* int */
- success = (status == AE_OK &&
- out_obj.type == ACPI_TYPE_INTEGER);
- if (success && res)
- *res = out_obj.integer.value;
- break;
- case 'v': /* void */
- success = status == AE_OK;
- break;
- /* add more types as needed */
- default:
- pr_err("acpi_evalf() called with invalid format character '%c'\n",
- res_type);
- return 0;
- }
-
- if (!success && !quiet)
- pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
- method, fmt0, acpi_format_exception(status));
-
- return success;
-}
-
-static int acpi_ec_read(int i, u8 *p)
-{
- int v;
-
- if (ecrd_handle) {
- if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
- return 0;
- *p = v;
- } else {
- if (ec_read(i, p) < 0)
- return 0;
- }
-
- return 1;
-}
-
-static int acpi_ec_write(int i, u8 v)
-{
- if (ecwr_handle) {
- if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
- return 0;
- } else {
- if (ec_write(i, v) < 0)
- return 0;
- }
-
- return 1;
-}
-
-static int issue_thinkpad_cmos_command(int cmos_cmd)
-{
- if (!cmos_handle)
- return -ENXIO;
-
- if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
- return -EIO;
-
- return 0;
-}
-
-/*************************************************************************
- * ACPI device model
- */
-
-#define TPACPI_ACPIHANDLE_INIT(object) \
- drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
- object##_paths, ARRAY_SIZE(object##_paths))
-
-static void __init drv_acpi_handle_init(const char *name,
- acpi_handle *handle, const acpi_handle parent,
- char **paths, const int num_paths)
-{
- int i;
- acpi_status status;
-
- vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
- name);
-
- for (i = 0; i < num_paths; i++) {
- status = acpi_get_handle(parent, paths[i], handle);
- if (ACPI_SUCCESS(status)) {
- dbg_printk(TPACPI_DBG_INIT,
- "Found ACPI handle %s for %s\n",
- paths[i], name);
- return;
- }
- }
-
- vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
- name);
- *handle = NULL;
-}
-
-static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
- u32 level, void *context, void **return_value)
-{
- if (!strcmp(context, "video")) {
- struct acpi_device *dev = acpi_fetch_acpi_dev(handle);
-
- if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
- return AE_OK;
- }
-
- *(acpi_handle *)return_value = handle;
-
- return AE_CTRL_TERMINATE;
-}
-
-static void __init tpacpi_acpi_handle_locate(const char *name,
- const char *hid,
- acpi_handle *handle)
-{
- acpi_status status;
- acpi_handle device_found;
-
- BUG_ON(!name || !handle);
- vdbg_printk(TPACPI_DBG_INIT,
- "trying to locate ACPI handle for %s, using HID %s\n",
- name, hid ? hid : "NULL");
-
- memset(&device_found, 0, sizeof(device_found));
- status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
- (void *)name, &device_found);
-
- *handle = NULL;
-
- if (ACPI_SUCCESS(status)) {
- *handle = device_found;
- dbg_printk(TPACPI_DBG_INIT,
- "Found ACPI handle for %s\n", name);
- } else {
- vdbg_printk(TPACPI_DBG_INIT,
- "Could not locate an ACPI handle for %s: %s\n",
- name, acpi_format_exception(status));
- }
-}
-
-static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
-{
- struct ibm_struct *ibm = data;
-
- if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
- return;
-
- if (!ibm || !ibm->acpi || !ibm->acpi->notify)
- return;
-
- ibm->acpi->notify(ibm, event);
-}
-
-static int __init setup_acpi_notify(struct ibm_struct *ibm)
-{
- acpi_status status;
-
- BUG_ON(!ibm->acpi);
-
- if (!*ibm->acpi->handle)
- return 0;
-
- vdbg_printk(TPACPI_DBG_INIT,
- "setting up ACPI notify for %s\n", ibm->name);
-
- ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle);
- if (!ibm->acpi->device) {
- pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name);
- return -ENODEV;
- }
-
- ibm->acpi->device->driver_data = ibm;
- scnprintf(acpi_device_class(ibm->acpi->device),
- sizeof(acpi_device_class(ibm->acpi->device)),
- "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name);
-
- status = acpi_install_notify_handler(*ibm->acpi->handle,
- ibm->acpi->type, dispatch_acpi_notify, ibm);
- if (ACPI_FAILURE(status)) {
- if (status == AE_ALREADY_EXISTS) {
- pr_notice("another device driver is already handling %s events\n",
- ibm->name);
- } else {
- pr_err("acpi_install_notify_handler(%s) failed: %s\n",
- ibm->name, acpi_format_exception(status));
- }
- return -ENODEV;
- }
- ibm->flags.acpi_notify_installed = 1;
- return 0;
-}
-
-static int __init tpacpi_device_add(struct acpi_device *device)
-{
- return 0;
-}
-
-static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
-{
- int rc;
-
- dbg_printk(TPACPI_DBG_INIT,
- "registering %s as an ACPI driver\n", ibm->name);
-
- BUG_ON(!ibm->acpi);
-
- ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
- if (!ibm->acpi->driver) {
- pr_err("failed to allocate memory for ibm->acpi->driver\n");
- return -ENOMEM;
- }
-
- sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
- ibm->acpi->driver->ids = ibm->acpi->hid;
-
- ibm->acpi->driver->ops.add = &tpacpi_device_add;
-
- rc = acpi_bus_register_driver(ibm->acpi->driver);
- if (rc < 0) {
- pr_err("acpi_bus_register_driver(%s) failed: %d\n",
- ibm->name, rc);
- kfree(ibm->acpi->driver);
- ibm->acpi->driver = NULL;
- } else if (!rc)
- ibm->flags.acpi_driver_registered = 1;
-
- return rc;
-}
-
-
-/****************************************************************************
- ****************************************************************************
- *
- * Procfs Helpers
- *
- ****************************************************************************
- ****************************************************************************/
-
-static int dispatch_proc_show(struct seq_file *m, void *v)
-{
- struct ibm_struct *ibm = m->private;
-
- if (!ibm || !ibm->read)
- return -EINVAL;
- return ibm->read(m);
-}
-
-static int dispatch_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dispatch_proc_show, pde_data(inode));
-}
-
-static ssize_t dispatch_proc_write(struct file *file,
- const char __user *userbuf,
- size_t count, loff_t *pos)
-{
- struct ibm_struct *ibm = pde_data(file_inode(file));
- char *kernbuf;
- int ret;
-
- if (!ibm || !ibm->write)
- return -EINVAL;
- if (count > PAGE_SIZE - 1)
- return -EINVAL;
-
- kernbuf = memdup_user_nul(userbuf, count);
- if (IS_ERR(kernbuf))
- return PTR_ERR(kernbuf);
- ret = ibm->write(kernbuf);
- if (ret == 0)
- ret = count;
-
- kfree(kernbuf);
-
- return ret;
-}
-
-static const struct proc_ops dispatch_proc_ops = {
- .proc_open = dispatch_proc_open,
- .proc_read = seq_read,
- .proc_lseek = seq_lseek,
- .proc_release = single_release,
- .proc_write = dispatch_proc_write,
-};
-
-/****************************************************************************
- ****************************************************************************
- *
- * Device model: input, hwmon and platform
- *
- ****************************************************************************
- ****************************************************************************/
-
-static struct platform_device *tpacpi_pdev;
-static struct platform_device *tpacpi_sensors_pdev;
-static struct device *tpacpi_hwmon;
-static struct device *tpacpi_pprof;
-static struct input_dev *tpacpi_inputdev;
-static struct mutex tpacpi_inputdev_send_mutex;
-static LIST_HEAD(tpacpi_all_drivers);
-
-#ifdef CONFIG_PM_SLEEP
-static int tpacpi_suspend_handler(struct device *dev)
-{
- struct ibm_struct *ibm, *itmp;
-
- list_for_each_entry_safe(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- if (ibm->suspend)
- (ibm->suspend)();
- }
-
- return 0;
-}
-
-static int tpacpi_resume_handler(struct device *dev)
-{
- struct ibm_struct *ibm, *itmp;
-
- list_for_each_entry_safe(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- if (ibm->resume)
- (ibm->resume)();
- }
-
- return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(tpacpi_pm,
- tpacpi_suspend_handler, tpacpi_resume_handler);
-
-static void tpacpi_shutdown_handler(struct platform_device *pdev)
-{
- struct ibm_struct *ibm, *itmp;
-
- list_for_each_entry_safe(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- if (ibm->shutdown)
- (ibm->shutdown)();
- }
-}
-
-/*************************************************************************
- * sysfs support helpers
- */
-
-static int parse_strtoul(const char *buf,
- unsigned long max, unsigned long *value)
-{
- char *endp;
-
- *value = simple_strtoul(skip_spaces(buf), &endp, 0);
- endp = skip_spaces(endp);
- if (*endp || *value > max)
- return -EINVAL;
-
- return 0;
-}
-
-static void tpacpi_disable_brightness_delay(void)
-{
- if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
- pr_notice("ACPI backlight control delay disabled\n");
-}
-
-static void printk_deprecated_attribute(const char * const what,
- const char * const details)
-{
- tpacpi_log_usertask("deprecated sysfs attribute");
- pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
- what, details);
-}
-
-/*************************************************************************
- * rfkill and radio control support helpers
- */
-
-/*
- * ThinkPad-ACPI firmware handling model:
- *
- * WLSW (master wireless switch) is event-driven, and is common to all
- * firmware-controlled radios. It cannot be controlled, just monitored,
- * as expected. It overrides all radio state in firmware
- *
- * The kernel, a masked-off hotkey, and WLSW can change the radio state
- * (TODO: verify how WLSW interacts with the returned radio state).
- *
- * The only time there are shadow radio state changes, is when
- * masked-off hotkeys are used.
- */
-
-/*
- * Internal driver API for radio state:
- *
- * int: < 0 = error, otherwise enum tpacpi_rfkill_state
- * bool: true means radio blocked (off)
- */
-enum tpacpi_rfkill_state {
- TPACPI_RFK_RADIO_OFF = 0,
- TPACPI_RFK_RADIO_ON
-};
-
-/* rfkill switches */
-enum tpacpi_rfk_id {
- TPACPI_RFK_BLUETOOTH_SW_ID = 0,
- TPACPI_RFK_WWAN_SW_ID,
- TPACPI_RFK_UWB_SW_ID,
- TPACPI_RFK_SW_MAX
-};
-
-static const char *tpacpi_rfkill_names[] = {
- [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
- [TPACPI_RFK_WWAN_SW_ID] = "wwan",
- [TPACPI_RFK_UWB_SW_ID] = "uwb",
- [TPACPI_RFK_SW_MAX] = NULL
-};
-
-/* ThinkPad-ACPI rfkill subdriver */
-struct tpacpi_rfk {
- struct rfkill *rfkill;
- enum tpacpi_rfk_id id;
- const struct tpacpi_rfk_ops *ops;
-};
-
-struct tpacpi_rfk_ops {
- /* firmware interface */
- int (*get_status)(void);
- int (*set_status)(const enum tpacpi_rfkill_state);
-};
-
-static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
-
-/* Query FW and update rfkill sw state for a given rfkill switch */
-static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
-{
- int status;
-
- if (!tp_rfk)
- return -ENODEV;
-
- status = (tp_rfk->ops->get_status)();
- if (status < 0)
- return status;
-
- rfkill_set_sw_state(tp_rfk->rfkill,
- (status == TPACPI_RFK_RADIO_OFF));
-
- return status;
-}
-
-/*
- * Sync the HW-blocking state of all rfkill switches,
- * do notice it causes the rfkill core to schedule uevents
- */
-static void tpacpi_rfk_update_hwblock_state(bool blocked)
-{
- unsigned int i;
- struct tpacpi_rfk *tp_rfk;
-
- for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
- tp_rfk = tpacpi_rfkill_switches[i];
- if (tp_rfk) {
- if (rfkill_set_hw_state(tp_rfk->rfkill,
- blocked)) {
- /* ignore -- we track sw block */
- }
- }
- }
-}
-
-/* Call to get the WLSW state from the firmware */
-static int hotkey_get_wlsw(void);
-
-/* Call to query WLSW state and update all rfkill switches */
-static bool tpacpi_rfk_check_hwblock_state(void)
-{
- int res = hotkey_get_wlsw();
- int hw_blocked;
-
- /* When unknown or unsupported, we have to assume it is unblocked */
- if (res < 0)
- return false;
-
- hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
- tpacpi_rfk_update_hwblock_state(hw_blocked);
-
- return hw_blocked;
-}
-
-static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
-{
- struct tpacpi_rfk *tp_rfk = data;
- int res;
-
- dbg_printk(TPACPI_DBG_RFKILL,
- "request to change radio state to %s\n",
- blocked ? "blocked" : "unblocked");
-
- /* try to set radio state */
- res = (tp_rfk->ops->set_status)(blocked ?
- TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
-
- /* and update the rfkill core with whatever the FW really did */
- tpacpi_rfk_update_swstate(tp_rfk);
-
- return (res < 0) ? res : 0;
-}
-
-static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
- .set_block = tpacpi_rfk_hook_set_block,
-};
-
-static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
- const struct tpacpi_rfk_ops *tp_rfkops,
- const enum rfkill_type rfktype,
- const char *name,
- const bool set_default)
-{
- struct tpacpi_rfk *atp_rfk;
- int res;
- bool sw_state = false;
- bool hw_state;
- int sw_status;
-
- BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
-
- atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
- if (atp_rfk)
- atp_rfk->rfkill = rfkill_alloc(name,
- &tpacpi_pdev->dev,
- rfktype,
- &tpacpi_rfk_rfkill_ops,
- atp_rfk);
- if (!atp_rfk || !atp_rfk->rfkill) {
- pr_err("failed to allocate memory for rfkill class\n");
- kfree(atp_rfk);
- return -ENOMEM;
- }
-
- atp_rfk->id = id;
- atp_rfk->ops = tp_rfkops;
-
- sw_status = (tp_rfkops->get_status)();
- if (sw_status < 0) {
- pr_err("failed to read initial state for %s, error %d\n",
- name, sw_status);
- } else {
- sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
- if (set_default) {
- /* try to keep the initial state, since we ask the
- * firmware to preserve it across S5 in NVRAM */
- rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
- }
- }
- hw_state = tpacpi_rfk_check_hwblock_state();
- rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
-
- res = rfkill_register(atp_rfk->rfkill);
- if (res < 0) {
- pr_err("failed to register %s rfkill switch: %d\n", name, res);
- rfkill_destroy(atp_rfk->rfkill);
- kfree(atp_rfk);
- return res;
- }
-
- tpacpi_rfkill_switches[id] = atp_rfk;
-
- pr_info("rfkill switch %s: radio is %sblocked\n",
- name, (sw_state || hw_state) ? "" : "un");
- return 0;
-}
-
-static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
-{
- struct tpacpi_rfk *tp_rfk;
-
- BUG_ON(id >= TPACPI_RFK_SW_MAX);
-
- tp_rfk = tpacpi_rfkill_switches[id];
- if (tp_rfk) {
- rfkill_unregister(tp_rfk->rfkill);
- rfkill_destroy(tp_rfk->rfkill);
- tpacpi_rfkill_switches[id] = NULL;
- kfree(tp_rfk);
- }
-}
-
-static void printk_deprecated_rfkill_attribute(const char * const what)
-{
- printk_deprecated_attribute(what,
- "Please switch to generic rfkill before year 2010");
-}
-
-/* sysfs <radio> enable ------------------------------------------------ */
-static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
- struct device_attribute *attr,
- char *buf)
-{
- int status;
-
- printk_deprecated_rfkill_attribute(attr->attr.name);
-
- /* This is in the ABI... */
- if (tpacpi_rfk_check_hwblock_state()) {
- status = TPACPI_RFK_RADIO_OFF;
- } else {
- status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
- if (status < 0)
- return status;
- }
-
- return sysfs_emit(buf, "%d\n",
- (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
-}
-
-static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
- int res;
-
- printk_deprecated_rfkill_attribute(attr->attr.name);
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
-
- /* This is in the ABI... */
- if (tpacpi_rfk_check_hwblock_state() && !!t)
- return -EPERM;
-
- res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
- tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
-
- return (res < 0) ? res : count;
-}
-
-/* procfs -------------------------------------------------------------- */
-static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
-{
- if (id >= TPACPI_RFK_SW_MAX)
- seq_printf(m, "status:\t\tnot supported\n");
- else {
- int status;
-
- /* This is in the ABI... */
- if (tpacpi_rfk_check_hwblock_state()) {
- status = TPACPI_RFK_RADIO_OFF;
- } else {
- status = tpacpi_rfk_update_swstate(
- tpacpi_rfkill_switches[id]);
- if (status < 0)
- return status;
- }
-
- seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON));
- seq_printf(m, "commands:\tenable, disable\n");
- }
-
- return 0;
-}
-
-static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
-{
- char *cmd;
- int status = -1;
- int res = 0;
-
- if (id >= TPACPI_RFK_SW_MAX)
- return -ENODEV;
-
- while ((cmd = strsep(&buf, ","))) {
- if (strstarts(cmd, "enable"))
- status = TPACPI_RFK_RADIO_ON;
- else if (strstarts(cmd, "disable"))
- status = TPACPI_RFK_RADIO_OFF;
- else
- return -EINVAL;
- }
-
- if (status != -1) {
- tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
- str_enable_disable(status == TPACPI_RFK_RADIO_ON),
- tpacpi_rfkill_names[id]);
- res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
- tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
- }
-
- return res;
-}
-
-/*************************************************************************
- * thinkpad-acpi driver attributes
- */
-
-/* interface_version --------------------------------------------------- */
-static ssize_t interface_version_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION);
-}
-static DRIVER_ATTR_RO(interface_version);
-
-/* debug_level --------------------------------------------------------- */
-static ssize_t debug_level_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "0x%04x\n", dbg_level);
-}
-
-static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
- size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 0xffff, &t))
- return -EINVAL;
-
- dbg_level = t;
-
- return count;
-}
-static DRIVER_ATTR_RW(debug_level);
-
-/* version ------------------------------------------------------------- */
-static ssize_t version_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "%s v%s\n",
- TPACPI_DESC, TPACPI_VERSION);
-}
-static DRIVER_ATTR_RO(version);
-
-/* --------------------------------------------------------------------- */
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
-
-/* wlsw_emulstate ------------------------------------------------------ */
-static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate);
-}
-
-static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
- size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- if (tpacpi_wlsw_emulstate != !!t) {
- tpacpi_wlsw_emulstate = !!t;
- tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
- }
-
- return count;
-}
-static DRIVER_ATTR_RW(wlsw_emulstate);
-
-/* bluetooth_emulstate ------------------------------------------------- */
-static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate);
-}
-
-static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
- const char *buf, size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- tpacpi_bluetooth_emulstate = !!t;
-
- return count;
-}
-static DRIVER_ATTR_RW(bluetooth_emulstate);
-
-/* wwan_emulstate ------------------------------------------------- */
-static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate);
-}
-
-static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
- size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- tpacpi_wwan_emulstate = !!t;
-
- return count;
-}
-static DRIVER_ATTR_RW(wwan_emulstate);
-
-/* uwb_emulstate ------------------------------------------------- */
-static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate);
-}
-
-static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
- size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- tpacpi_uwb_emulstate = !!t;
-
- return count;
-}
-static DRIVER_ATTR_RW(uwb_emulstate);
-#endif
-
-/*************************************************************************
- * Firmware Data
- */
-
-/*
- * Table of recommended minimum BIOS versions
- *
- * Reasons for listing:
- * 1. Stable BIOS, listed because the unknown amount of
- * bugs and bad ACPI behaviour on older versions
- *
- * 2. BIOS or EC fw with known bugs that trigger on Linux
- *
- * 3. BIOS with known reduced functionality in older versions
- *
- * We recommend the latest BIOS and EC version.
- * We only support the latest BIOS and EC fw version as a rule.
- *
- * Sources: IBM ThinkPad Public Web Documents (update changelogs),
- * Information from users in ThinkWiki
- *
- * WARNING: we use this table also to detect that the machine is
- * a ThinkPad in some cases, so don't remove entries lightly.
- */
-
-#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
- { .vendor = (__v), \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = TPACPI_MATCH_ANY_VERSION << 16 \
- | TPVER(__bv1, __bv2) }
-
-#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
- __eid, __ev1, __ev2) \
- { .vendor = (__v), \
- .bios = TPID(__bid1, __bid2), \
- .ec = __eid, \
- .quirks = TPVER(__ev1, __ev2) << 16 \
- | TPVER(__bv1, __bv2) }
-
-#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
- TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
-
-/* Outdated IBM BIOSes often lack the EC id string */
-#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
- __bv1, __bv2, TPID(__id1, __id2), \
- __ev1, __ev2), \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
- __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
- __ev1, __ev2)
-
-/* Outdated IBM BIOSes often lack the EC id string */
-#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
- __eid1, __eid2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
- __bv1, __bv2, TPID(__eid1, __eid2), \
- __ev1, __ev2), \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
- __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
- __ev1, __ev2)
-
-#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
- TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
-
-#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
- __bv1, __bv2, TPID(__id1, __id2), \
- __ev1, __ev2)
-
-#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
- __eid1, __eid2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
- __bv1, __bv2, TPID(__eid1, __eid2), \
- __ev1, __ev2)
-
-static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
- /* Numeric models ------------------ */
- /* FW MODEL BIOS VERS */
- TPV_QI0('I', 'M', '6', '5'), /* 570 */
- TPV_QI0('I', 'U', '2', '6'), /* 570E */
- TPV_QI0('I', 'B', '5', '4'), /* 600 */
- TPV_QI0('I', 'H', '4', '7'), /* 600E */
- TPV_QI0('I', 'N', '3', '6'), /* 600E */
- TPV_QI0('I', 'T', '5', '5'), /* 600X */
- TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
- TPV_QI0('I', 'I', '4', '2'), /* 770X */
- TPV_QI0('I', 'O', '2', '3'), /* 770Z */
-
- /* A-series ------------------------- */
- /* FW MODEL BIOS VERS EC VERS */
- TPV_QI0('I', 'W', '5', '9'), /* A20m */
- TPV_QI0('I', 'V', '6', '9'), /* A20p */
- TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
- TPV_QI0('K', 'U', '3', '6'), /* A21e */
- TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
- TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
- TPV_QI0('1', 'B', '1', '7'), /* A22e */
- TPV_QI0('1', '3', '2', '0'), /* A22m */
- TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
- TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
- TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
-
- /* G-series ------------------------- */
- /* FW MODEL BIOS VERS */
- TPV_QI0('1', 'T', 'A', '6'), /* G40 */
- TPV_QI0('1', 'X', '5', '7'), /* G41 */
-
- /* R-series, T-series --------------- */
- /* FW MODEL BIOS VERS EC VERS */
- TPV_QI0('1', 'C', 'F', '0'), /* R30 */
- TPV_QI0('1', 'F', 'F', '1'), /* R31 */
- TPV_QI0('1', 'M', '9', '7'), /* R32 */
- TPV_QI0('1', 'O', '6', '1'), /* R40 */
- TPV_QI0('1', 'P', '6', '5'), /* R40 */
- TPV_QI0('1', 'S', '7', '0'), /* R40e */
- TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
- T40/p, T41/p, T42/p (1) */
- TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
- TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
- TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
- TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
-
- TPV_QI0('I', 'Y', '6', '1'), /* T20 */
- TPV_QI0('K', 'Z', '3', '4'), /* T21 */
- TPV_QI0('1', '6', '3', '2'), /* T22 */
- TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
- TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
- TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
-
- TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
- TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
- TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
-
- /* BIOS FW BIOS VERS EC FW EC VERS */
- TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
- TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
-
- /* X-series ------------------------- */
- /* FW MODEL BIOS VERS EC VERS */
- TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
- TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
- TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
- TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
- TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
- TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
- TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
-
- TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
- TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
-
- /* (0) - older versions lack DMI EC fw string and functionality */
- /* (1) - older versions known to lack functionality */
-};
-
-#undef TPV_QL1
-#undef TPV_QL0
-#undef TPV_QI2
-#undef TPV_QI1
-#undef TPV_QI0
-#undef TPV_Q_X
-#undef TPV_Q
-
-static void __init tpacpi_check_outdated_fw(void)
-{
- unsigned long fwvers;
- u16 ec_version, bios_version;
-
- fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
- ARRAY_SIZE(tpacpi_bios_version_qtable));
-
- if (!fwvers)
- return;
-
- bios_version = fwvers & 0xffffU;
- ec_version = (fwvers >> 16) & 0xffffU;
-
- /* note that unknown versions are set to 0x0000 and we use that */
- if ((bios_version > thinkpad_id.bios_release) ||
- (ec_version > thinkpad_id.ec_release &&
- ec_version != TPACPI_MATCH_ANY_VERSION)) {
- /*
- * The changelogs would let us track down the exact
- * reason, but it is just too much of a pain to track
- * it. We only list BIOSes that are either really
- * broken, or really stable to begin with, so it is
- * best if the user upgrades the firmware anyway.
- */
- pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
- pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
- }
-}
-
-static bool __init tpacpi_is_fw_known(void)
-{
- return tpacpi_check_quirks(tpacpi_bios_version_qtable,
- ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
-}
-
-/****************************************************************************
- ****************************************************************************
- *
- * Subdrivers
- *
- ****************************************************************************
- ****************************************************************************/
-
-/*************************************************************************
- * thinkpad-acpi metadata subdriver
- */
-
-static int thinkpad_acpi_driver_read(struct seq_file *m)
-{
- seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
- seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
- return 0;
-}
-
-static struct ibm_struct thinkpad_acpi_driver_data = {
- .name = "driver",
- .read = thinkpad_acpi_driver_read,
-};
-
-/*************************************************************************
- * Hotkey subdriver
- */
-
-/*
- * ThinkPad firmware event model
- *
- * The ThinkPad firmware has two main event interfaces: normal ACPI
- * notifications (which follow the ACPI standard), and a private event
- * interface.
- *
- * The private event interface also issues events for the hotkeys. As
- * the driver gained features, the event handling code ended up being
- * built around the hotkey subdriver. This will need to be refactored
- * to a more formal event API eventually.
- *
- * Some "hotkeys" are actually supposed to be used as event reports,
- * such as "brightness has changed", "volume has changed", depending on
- * the ThinkPad model and how the firmware is operating.
- *
- * Unlike other classes, hotkey-class events have mask/unmask control on
- * non-ancient firmware. However, how it behaves changes a lot with the
- * firmware model and version.
- */
-
-enum { /* hot key scan codes (derived from ACPI DSDT) */
- TP_ACPI_HOTKEYSCAN_FNF1 = 0,
- TP_ACPI_HOTKEYSCAN_FNF2,
- TP_ACPI_HOTKEYSCAN_FNF3,
- TP_ACPI_HOTKEYSCAN_FNF4,
- TP_ACPI_HOTKEYSCAN_FNF5,
- TP_ACPI_HOTKEYSCAN_FNF6,
- TP_ACPI_HOTKEYSCAN_FNF7,
- TP_ACPI_HOTKEYSCAN_FNF8,
- TP_ACPI_HOTKEYSCAN_FNF9,
- TP_ACPI_HOTKEYSCAN_FNF10,
- TP_ACPI_HOTKEYSCAN_FNF11,
- TP_ACPI_HOTKEYSCAN_FNF12,
- TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
- TP_ACPI_HOTKEYSCAN_FNINSERT,
- TP_ACPI_HOTKEYSCAN_FNDELETE,
- TP_ACPI_HOTKEYSCAN_FNHOME,
- TP_ACPI_HOTKEYSCAN_FNEND,
- TP_ACPI_HOTKEYSCAN_FNPAGEUP,
- TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
- TP_ACPI_HOTKEYSCAN_FNSPACE,
- TP_ACPI_HOTKEYSCAN_VOLUMEUP,
- TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
- TP_ACPI_HOTKEYSCAN_MUTE,
- TP_ACPI_HOTKEYSCAN_THINKPAD,
- TP_ACPI_HOTKEYSCAN_UNK1,
- TP_ACPI_HOTKEYSCAN_UNK2,
- TP_ACPI_HOTKEYSCAN_MICMUTE,
- TP_ACPI_HOTKEYSCAN_UNK4,
- TP_ACPI_HOTKEYSCAN_CONFIG,
- TP_ACPI_HOTKEYSCAN_SEARCH,
- TP_ACPI_HOTKEYSCAN_SCALE,
- TP_ACPI_HOTKEYSCAN_FILE,
-
- /* Adaptive keyboard keycodes */
- TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */
- TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
- TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
- TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
- TP_ACPI_HOTKEYSCAN_CLOUD,
- TP_ACPI_HOTKEYSCAN_UNK9,
- TP_ACPI_HOTKEYSCAN_VOICE,
- TP_ACPI_HOTKEYSCAN_UNK10,
- TP_ACPI_HOTKEYSCAN_GESTURES,
- TP_ACPI_HOTKEYSCAN_UNK11,
- TP_ACPI_HOTKEYSCAN_UNK12,
- TP_ACPI_HOTKEYSCAN_UNK13,
- TP_ACPI_HOTKEYSCAN_CONFIG2,
- TP_ACPI_HOTKEYSCAN_NEW_TAB,
- TP_ACPI_HOTKEYSCAN_RELOAD,
- TP_ACPI_HOTKEYSCAN_BACK,
- TP_ACPI_HOTKEYSCAN_MIC_DOWN,
- TP_ACPI_HOTKEYSCAN_MIC_UP,
- TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
- TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
- TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
-
- /* Lenovo extended keymap, starting at 0x1300 */
- TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */
- /* first new observed key (star, favorites) is 0x1311 */
- TP_ACPI_HOTKEYSCAN_STAR = 69,
- TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
- TP_ACPI_HOTKEYSCAN_CALCULATOR,
- TP_ACPI_HOTKEYSCAN_BLUETOOTH,
- TP_ACPI_HOTKEYSCAN_KEYBOARD,
- TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */
- TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
- TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
- TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
-};
-
-enum { /* Keys/events available through NVRAM polling */
- TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
- TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
-};
-
-enum { /* Positions of some of the keys in hotkey masks */
- TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
- TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
- TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
- TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
- TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
- TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
- TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
- TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
- TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
- TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
- TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
-};
-
-enum { /* NVRAM to ACPI HKEY group map */
- TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
- TP_ACPI_HKEY_ZOOM_MASK |
- TP_ACPI_HKEY_DISPSWTCH_MASK |
- TP_ACPI_HKEY_HIBERNATE_MASK,
- TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
- TP_ACPI_HKEY_BRGHTDWN_MASK,
- TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
- TP_ACPI_HKEY_VOLDWN_MASK |
- TP_ACPI_HKEY_MUTE_MASK,
-};
-
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
-struct tp_nvram_state {
- u16 thinkpad_toggle:1;
- u16 zoom_toggle:1;
- u16 display_toggle:1;
- u16 thinklight_toggle:1;
- u16 hibernate_toggle:1;
- u16 displayexp_toggle:1;
- u16 display_state:1;
- u16 brightness_toggle:1;
- u16 volume_toggle:1;
- u16 mute:1;
-
- u8 brightness_level;
- u8 volume_level;
-};
-
-/* kthread for the hotkey poller */
-static struct task_struct *tpacpi_hotkey_task;
-
-/*
- * Acquire mutex to write poller control variables as an
- * atomic block.
- *
- * Increment hotkey_config_change when changing them if you
- * want the kthread to forget old state.
- *
- * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
- */
-static struct mutex hotkey_thread_data_mutex;
-static unsigned int hotkey_config_change;
-
-/*
- * hotkey poller control variables
- *
- * Must be atomic or readers will also need to acquire mutex
- *
- * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
- * should be used only when the changes need to be taken as
- * a block, OR when one needs to force the kthread to forget
- * old state.
- */
-static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
-static unsigned int hotkey_poll_freq = 10; /* Hz */
-
-#define HOTKEY_CONFIG_CRITICAL_START \
- do { \
- mutex_lock(&hotkey_thread_data_mutex); \
- hotkey_config_change++; \
- } while (0);
-#define HOTKEY_CONFIG_CRITICAL_END \
- mutex_unlock(&hotkey_thread_data_mutex);
-
-#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
-
-#define hotkey_source_mask 0U
-#define HOTKEY_CONFIG_CRITICAL_START
-#define HOTKEY_CONFIG_CRITICAL_END
-
-#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
-
-static struct mutex hotkey_mutex;
-
-static enum { /* Reasons for waking up */
- TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
- TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
- TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
-} hotkey_wakeup_reason;
-
-static int hotkey_autosleep_ack;
-
-static u32 hotkey_orig_mask; /* events the BIOS had enabled */
-static u32 hotkey_all_mask; /* all events supported in fw */
-static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
-static u32 hotkey_reserved_mask; /* events better left disabled */
-static u32 hotkey_driver_mask; /* events needed by the driver */
-static u32 hotkey_user_mask; /* events visible to userspace */
-static u32 hotkey_acpi_mask; /* events enabled in firmware */
-
-static bool tpacpi_driver_event(const unsigned int hkey_event);
-static void hotkey_poll_setup(const bool may_warn);
-
-/* HKEY.MHKG() return bits */
-#define TP_HOTKEY_TABLET_MASK (1 << 3)
-enum {
- TP_ACPI_MULTI_MODE_INVALID = 0,
- TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
- TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
- TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
- TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
- TP_ACPI_MULTI_MODE_STAND = 1 << 4,
- TP_ACPI_MULTI_MODE_TENT = 1 << 5,
- TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
-};
-
-enum {
- /* The following modes are considered tablet mode for the purpose of
- * reporting the status to userspace. i.e. in all these modes it makes
- * sense to disable the laptop input devices such as touchpad and
- * keyboard.
- */
- TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND |
- TP_ACPI_MULTI_MODE_TENT |
- TP_ACPI_MULTI_MODE_STAND_TENT,
-};
-
-static int hotkey_get_wlsw(void)
-{
- int status;
-
- if (!tp_features.hotkey_wlsw)
- return -ENODEV;
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wlswemul)
- return (tpacpi_wlsw_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-#endif
-
- if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
- return -EIO;
-
- return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-}
-
-static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
-{
- int type = (s >> 16) & 0xffff;
- int value = s & 0xffff;
- int mode = TP_ACPI_MULTI_MODE_INVALID;
- int valid_modes = 0;
-
- if (has_tablet_mode)
- *has_tablet_mode = 0;
-
- switch (type) {
- case 1:
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND_TENT;
- break;
- case 2:
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_FLAT |
- TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND |
- TP_ACPI_MULTI_MODE_TENT;
- break;
- case 3:
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_FLAT;
- break;
- case 4:
- case 5:
- /* In mode 4, FLAT is not specified as a valid mode. However,
- * it can be seen at least on the X1 Yoga 2nd Generation.
- */
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_FLAT |
- TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND |
- TP_ACPI_MULTI_MODE_TENT;
- break;
- default:
- pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
- type, value, TPACPI_MAIL);
- return 0;
- }
-
- if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
- *has_tablet_mode = 1;
-
- switch (value) {
- case 1:
- mode = TP_ACPI_MULTI_MODE_LAPTOP;
- break;
- case 2:
- mode = TP_ACPI_MULTI_MODE_FLAT;
- break;
- case 3:
- mode = TP_ACPI_MULTI_MODE_TABLET;
- break;
- case 4:
- if (type == 1)
- mode = TP_ACPI_MULTI_MODE_STAND_TENT;
- else
- mode = TP_ACPI_MULTI_MODE_STAND;
- break;
- case 5:
- mode = TP_ACPI_MULTI_MODE_TENT;
- break;
- default:
- if (type == 5 && value == 0xffff) {
- pr_warn("Multi mode status is undetected, assuming laptop\n");
- return 0;
- }
- }
-
- if (!(mode & valid_modes)) {
- pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
- value, type, TPACPI_MAIL);
- return 0;
- }
-
- return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
-}
-
-static int hotkey_get_tablet_mode(int *status)
-{
- int s;
-
- switch (tp_features.hotkey_tablet) {
- case TP_HOTKEY_TABLET_USES_MHKG:
- if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
- return -EIO;
-
- *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
- break;
- case TP_HOTKEY_TABLET_USES_GMMS:
- if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
- return -EIO;
-
- *status = hotkey_gmms_get_tablet_mode(s, NULL);
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-/*
- * Reads current event mask from firmware, and updates
- * hotkey_acpi_mask accordingly. Also resets any bits
- * from hotkey_user_mask that are unavailable to be
- * delivered (shadow requirement of the userspace ABI).
- */
-static int hotkey_mask_get(void)
-{
- lockdep_assert_held(&hotkey_mutex);
-
- if (tp_features.hotkey_mask) {
- u32 m = 0;
-
- if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
- return -EIO;
-
- hotkey_acpi_mask = m;
- } else {
- /* no mask support doesn't mean no event support... */
- hotkey_acpi_mask = hotkey_all_mask;
- }
-
- /* sync userspace-visible mask */
- hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
-
- return 0;
-}
-
-static void hotkey_mask_warn_incomplete_mask(void)
-{
- /* log only what the user can fix... */
- const u32 wantedmask = hotkey_driver_mask &
- ~(hotkey_acpi_mask | hotkey_source_mask) &
- (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
-
- if (wantedmask)
- pr_notice("required events 0x%08x not enabled!\n", wantedmask);
-}
-
-/*
- * Set the firmware mask when supported
- *
- * Also calls hotkey_mask_get to update hotkey_acpi_mask.
- *
- * NOTE: does not set bits in hotkey_user_mask, but may reset them.
- */
-static int hotkey_mask_set(u32 mask)
-{
- int i;
- int rc = 0;
-
- const u32 fwmask = mask & ~hotkey_source_mask;
-
- lockdep_assert_held(&hotkey_mutex);
-
- if (tp_features.hotkey_mask) {
- for (i = 0; i < 32; i++) {
- if (!acpi_evalf(hkey_handle,
- NULL, "MHKM", "vdd", i + 1,
- !!(mask & (1 << i)))) {
- rc = -EIO;
- break;
- }
- }
- }
-
- /*
- * We *must* make an inconditional call to hotkey_mask_get to
- * refresh hotkey_acpi_mask and update hotkey_user_mask
- *
- * Take the opportunity to also log when we cannot _enable_
- * a given event.
- */
- if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
- pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
- fwmask, hotkey_acpi_mask);
- }
-
- if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
- hotkey_mask_warn_incomplete_mask();
-
- return rc;
-}
-
-/*
- * Sets hotkey_user_mask and tries to set the firmware mask
- */
-static int hotkey_user_mask_set(const u32 mask)
-{
- int rc;
-
- lockdep_assert_held(&hotkey_mutex);
-
- /* Give people a chance to notice they are doing something that
- * is bound to go boom on their users sooner or later */
- if (!tp_warned.hotkey_mask_ff &&
- (mask == 0xffff || mask == 0xffffff ||
- mask == 0xffffffff)) {
- tp_warned.hotkey_mask_ff = 1;
- pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
- mask);
- pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
- }
-
- /* Try to enable what the user asked for, plus whatever we need.
- * this syncs everything but won't enable bits in hotkey_user_mask */
- rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
-
- /* Enable the available bits in hotkey_user_mask */
- hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
-
- return rc;
-}
-
-/*
- * Sets the driver hotkey mask.
- *
- * Can be called even if the hotkey subdriver is inactive
- */
-static int tpacpi_hotkey_driver_mask_set(const u32 mask)
-{
- int rc;
-
- /* Do the right thing if hotkey_init has not been called yet */
- if (!tp_features.hotkey) {
- hotkey_driver_mask = mask;
- return 0;
- }
-
- mutex_lock(&hotkey_mutex);
-
- HOTKEY_CONFIG_CRITICAL_START
- hotkey_driver_mask = mask;
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- hotkey_source_mask |= (mask & ~hotkey_all_mask);
-#endif
- HOTKEY_CONFIG_CRITICAL_END
-
- rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
- ~hotkey_source_mask);
- hotkey_poll_setup(true);
-
- mutex_unlock(&hotkey_mutex);
-
- return rc;
-}
-
-static int hotkey_status_get(int *status)
-{
- if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
- return -EIO;
-
- return 0;
-}
-
-static int hotkey_status_set(bool enable)
-{
- if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
- return -EIO;
-
- return 0;
-}
-
-static void tpacpi_input_send_tabletsw(void)
-{
- int state;
-
- if (tp_features.hotkey_tablet &&
- !hotkey_get_tablet_mode(&state)) {
- mutex_lock(&tpacpi_inputdev_send_mutex);
-
- input_report_switch(tpacpi_inputdev,
- SW_TABLET_MODE, !!state);
- input_sync(tpacpi_inputdev);
-
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- }
-}
-
-#define GCES_NO_SHUTTER_DEVICE BIT(31)
-
-static int get_camera_shutter(void)
-{
- acpi_handle gces_handle;
- int output;
-
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GCES", &gces_handle)))
- return -ENODEV;
-
- if (!acpi_evalf(gces_handle, &output, NULL, "dd", 0))
- return -EIO;
-
- if (output & GCES_NO_SHUTTER_DEVICE)
- return -ENODEV;
-
- return output;
-}
-
-static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev)
-{
- bool known_ev;
- u32 scancode;
-
- if (tpacpi_driver_event(hkey))
- return true;
-
- /*
- * Before the conversion to using the sparse-keymap helpers the driver used to
- * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode
- * indexed array could be used to map scancodes to keycodes:
- *
- * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events)
- * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon)
- * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models)
- *
- * The sparse-keymap tables still use these scancodes for these ranges to
- * preserve userspace API compatibility (e.g. hwdb keymappings).
- */
- if (hkey >= TP_HKEY_EV_ORIG_KEY_START &&
- hkey <= TP_HKEY_EV_ORIG_KEY_END) {
- scancode = hkey - TP_HKEY_EV_ORIG_KEY_START;
- if (!(hotkey_user_mask & (1 << scancode)))
- return true; /* Not reported but still a known code */
- } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START &&
- hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) {
- scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START +
- TP_ACPI_HOTKEYSCAN_ADAPTIVE_START;
- } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START &&
- hkey <= TP_HKEY_EV_EXTENDED_KEY_END) {
- scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START +
- TP_ACPI_HOTKEYSCAN_EXTENDED_START;
- } else {
- /*
- * Do not send ACPI netlink events for unknown hotkeys, to
- * avoid userspace starting to rely on them. Instead these
- * should be added to the keymap to send evdev events.
- */
- if (send_acpi_ev)
- *send_acpi_ev = false;
-
- scancode = hkey;
- }
-
- mutex_lock(&tpacpi_inputdev_send_mutex);
- known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true);
- mutex_unlock(&tpacpi_inputdev_send_mutex);
-
- return known_ev;
-}
-
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
-static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
-
-/* Do NOT call without validating scancode first */
-static void tpacpi_hotkey_send_key(unsigned int scancode)
-{
- tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL);
-}
-
-static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
-{
- u8 d;
-
- if (m & TP_NVRAM_HKEY_GROUP_HK2) {
- d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
- n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
- n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
- n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
- n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
- }
- if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
- d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
- n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
- }
- if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
- d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
- n->displayexp_toggle =
- !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
- }
- if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
- d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
- n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
- >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
- n->brightness_toggle =
- !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
- }
- if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
- d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
- n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
- >> TP_NVRAM_POS_LEVEL_VOLUME;
- n->mute = !!(d & TP_NVRAM_MASK_MUTE);
- n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
- }
-}
-
-#define TPACPI_COMPARE_KEY(__scancode, __member) \
-do { \
- if ((event_mask & (1 << __scancode)) && \
- oldn->__member != newn->__member) \
- tpacpi_hotkey_send_key(__scancode); \
-} while (0)
-
-#define TPACPI_MAY_SEND_KEY(__scancode) \
-do { \
- if (event_mask & (1 << __scancode)) \
- tpacpi_hotkey_send_key(__scancode); \
-} while (0)
-
-static void issue_volchange(const unsigned int oldvol,
- const unsigned int newvol,
- const u32 event_mask)
-{
- unsigned int i = oldvol;
-
- while (i > newvol) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
- i--;
- }
- while (i < newvol) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
- i++;
- }
-}
-
-static void issue_brightnesschange(const unsigned int oldbrt,
- const unsigned int newbrt,
- const u32 event_mask)
-{
- unsigned int i = oldbrt;
-
- while (i > newbrt) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
- i--;
- }
- while (i < newbrt) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
- i++;
- }
-}
-
-static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
- struct tp_nvram_state *newn,
- const u32 event_mask)
-{
-
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
-
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
-
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
-
- /*
- * Handle volume
- *
- * This code is supposed to duplicate the IBM firmware behaviour:
- * - Pressing MUTE issues mute hotkey message, even when already mute
- * - Pressing Volume up/down issues volume up/down hotkey messages,
- * even when already at maximum or minimum volume
- * - The act of unmuting issues volume up/down notification,
- * depending which key was used to unmute
- *
- * We are constrained to what the NVRAM can tell us, which is not much
- * and certainly not enough if more than one volume hotkey was pressed
- * since the last poll cycle.
- *
- * Just to make our life interesting, some newer Lenovo ThinkPads have
- * bugs in the BIOS and may fail to update volume_toggle properly.
- */
- if (newn->mute) {
- /* muted */
- if (!oldn->mute ||
- oldn->volume_toggle != newn->volume_toggle ||
- oldn->volume_level != newn->volume_level) {
- /* recently muted, or repeated mute keypress, or
- * multiple presses ending in mute */
- issue_volchange(oldn->volume_level, newn->volume_level,
- event_mask);
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
- }
- } else {
- /* unmute */
- if (oldn->mute) {
- /* recently unmuted, issue 'unmute' keypress */
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
- }
- if (oldn->volume_level != newn->volume_level) {
- issue_volchange(oldn->volume_level, newn->volume_level,
- event_mask);
- } else if (oldn->volume_toggle != newn->volume_toggle) {
- /* repeated vol up/down keypress at end of scale ? */
- if (newn->volume_level == 0)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
- else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
- }
- }
-
- /* handle brightness */
- if (oldn->brightness_level != newn->brightness_level) {
- issue_brightnesschange(oldn->brightness_level,
- newn->brightness_level, event_mask);
- } else if (oldn->brightness_toggle != newn->brightness_toggle) {
- /* repeated key presses that didn't change state */
- if (newn->brightness_level == 0)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
- else if (newn->brightness_level >= bright_maxlvl
- && !tp_features.bright_unkfw)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
- }
-
-#undef TPACPI_COMPARE_KEY
-#undef TPACPI_MAY_SEND_KEY
-}
-
-/*
- * Polling driver
- *
- * We track all events in hotkey_source_mask all the time, since
- * most of them are edge-based. We only issue those requested by
- * hotkey_user_mask or hotkey_driver_mask, though.
- */
-static int hotkey_kthread(void *data)
-{
- struct tp_nvram_state s[2] = { 0 };
- u32 poll_mask, event_mask;
- unsigned int si, so;
- unsigned long t;
- unsigned int change_detector;
- unsigned int poll_freq;
- bool was_frozen;
-
- if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
- goto exit;
-
- set_freezable();
-
- so = 0;
- si = 1;
- t = 0;
-
- /* Initial state for compares */
- mutex_lock(&hotkey_thread_data_mutex);
- change_detector = hotkey_config_change;
- poll_mask = hotkey_source_mask;
- event_mask = hotkey_source_mask &
- (hotkey_driver_mask | hotkey_user_mask);
- poll_freq = hotkey_poll_freq;
- mutex_unlock(&hotkey_thread_data_mutex);
- hotkey_read_nvram(&s[so], poll_mask);
-
- while (!kthread_should_stop()) {
- if (t == 0) {
- if (likely(poll_freq))
- t = 1000/poll_freq;
- else
- t = 100; /* should never happen... */
- }
- t = msleep_interruptible(t);
- if (unlikely(kthread_freezable_should_stop(&was_frozen)))
- break;
-
- if (t > 0 && !was_frozen)
- continue;
-
- mutex_lock(&hotkey_thread_data_mutex);
- if (was_frozen || hotkey_config_change != change_detector) {
- /* forget old state on thaw or config change */
- si = so;
- t = 0;
- change_detector = hotkey_config_change;
- }
- poll_mask = hotkey_source_mask;
- event_mask = hotkey_source_mask &
- (hotkey_driver_mask | hotkey_user_mask);
- poll_freq = hotkey_poll_freq;
- mutex_unlock(&hotkey_thread_data_mutex);
-
- if (likely(poll_mask)) {
- hotkey_read_nvram(&s[si], poll_mask);
- if (likely(si != so)) {
- hotkey_compare_and_issue_event(&s[so], &s[si],
- event_mask);
- }
- }
-
- so = si;
- si ^= 1;
- }
-
-exit:
- return 0;
-}
-
-static void hotkey_poll_stop_sync(void)
-{
- lockdep_assert_held(&hotkey_mutex);
-
- if (tpacpi_hotkey_task) {
- kthread_stop(tpacpi_hotkey_task);
- tpacpi_hotkey_task = NULL;
- }
-}
-
-static void hotkey_poll_setup(const bool may_warn)
-{
- const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
- const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
-
- lockdep_assert_held(&hotkey_mutex);
-
- if (hotkey_poll_freq > 0 &&
- (poll_driver_mask ||
- (poll_user_mask && tpacpi_inputdev->users > 0))) {
- if (!tpacpi_hotkey_task) {
- tpacpi_hotkey_task = kthread_run(hotkey_kthread,
- NULL, TPACPI_NVRAM_KTHREAD_NAME);
- if (IS_ERR(tpacpi_hotkey_task)) {
- tpacpi_hotkey_task = NULL;
- pr_err("could not create kernel thread for hotkey polling\n");
- }
- }
- } else {
- hotkey_poll_stop_sync();
- if (may_warn && (poll_driver_mask || poll_user_mask) &&
- hotkey_poll_freq == 0) {
- pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
- poll_user_mask, poll_driver_mask);
- }
- }
-}
-
-static void hotkey_poll_setup_safe(const bool may_warn)
-{
- mutex_lock(&hotkey_mutex);
- hotkey_poll_setup(may_warn);
- mutex_unlock(&hotkey_mutex);
-}
-
-static void hotkey_poll_set_freq(unsigned int freq)
-{
- lockdep_assert_held(&hotkey_mutex);
-
- if (!freq)
- hotkey_poll_stop_sync();
-
- hotkey_poll_freq = freq;
-}
-
-#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
-
-static void hotkey_poll_setup(const bool __unused)
-{
-}
-
-static void hotkey_poll_setup_safe(const bool __unused)
-{
-}
-
-static void hotkey_poll_stop_sync(void)
-{
-}
-#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
-
-static int hotkey_inputdev_open(struct input_dev *dev)
-{
- switch (tpacpi_lifecycle) {
- case TPACPI_LIFE_INIT:
- case TPACPI_LIFE_RUNNING:
- hotkey_poll_setup_safe(false);
- return 0;
- case TPACPI_LIFE_EXITING:
- return -EBUSY;
- }
-
- /* Should only happen if tpacpi_lifecycle is corrupt */
- BUG();
- return -EBUSY;
-}
-
-static void hotkey_inputdev_close(struct input_dev *dev)
-{
- /* disable hotkey polling when possible */
- if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
- !(hotkey_source_mask & hotkey_driver_mask))
- hotkey_poll_setup_safe(false);
-}
-
-/* sysfs hotkey enable ------------------------------------------------- */
-static ssize_t hotkey_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res, status;
-
- printk_deprecated_attribute("hotkey_enable",
- "Hotkey reporting is always enabled");
-
- res = hotkey_status_get(&status);
- if (res)
- return res;
-
- return sysfs_emit(buf, "%d\n", status);
-}
-
-static ssize_t hotkey_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
-
- printk_deprecated_attribute("hotkey_enable",
- "Hotkeys can be disabled through hotkey_mask");
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- if (t == 0)
- return -EPERM;
-
- return count;
-}
-
-static DEVICE_ATTR_RW(hotkey_enable);
-
-/* sysfs hotkey mask --------------------------------------------------- */
-static ssize_t hotkey_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask);
-}
-
-static ssize_t hotkey_mask_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
- int res;
-
- if (parse_strtoul(buf, 0xffffffffUL, &t))
- return -EINVAL;
-
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
-
- res = hotkey_user_mask_set(t);
-
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- hotkey_poll_setup(true);
-#endif
-
- mutex_unlock(&hotkey_mutex);
-
- tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
-
- return (res) ? res : count;
-}
-
-static DEVICE_ATTR_RW(hotkey_mask);
-
-/* sysfs hotkey bios_enabled ------------------------------------------- */
-static ssize_t hotkey_bios_enabled_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "0\n");
-}
-
-static DEVICE_ATTR_RO(hotkey_bios_enabled);
-
-/* sysfs hotkey bios_mask ---------------------------------------------- */
-static ssize_t hotkey_bios_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- printk_deprecated_attribute("hotkey_bios_mask",
- "This attribute is useless.");
- return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask);
-}
-
-static DEVICE_ATTR_RO(hotkey_bios_mask);
-
-/* sysfs hotkey all_mask ----------------------------------------------- */
-static ssize_t hotkey_all_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "0x%08x\n",
- hotkey_all_mask | hotkey_source_mask);
-}
-
-static DEVICE_ATTR_RO(hotkey_all_mask);
-
-/* sysfs hotkey all_mask ----------------------------------------------- */
-static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "0x%08x\n",
- hotkey_adaptive_all_mask | hotkey_source_mask);
-}
-
-static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
-
-/* sysfs hotkey recommended_mask --------------------------------------- */
-static ssize_t hotkey_recommended_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "0x%08x\n",
- (hotkey_all_mask | hotkey_source_mask)
- & ~hotkey_reserved_mask);
-}
-
-static DEVICE_ATTR_RO(hotkey_recommended_mask);
-
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
-
-/* sysfs hotkey hotkey_source_mask ------------------------------------- */
-static ssize_t hotkey_source_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask);
-}
-
-static ssize_t hotkey_source_mask_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
- u32 r_ev;
- int rc;
-
- if (parse_strtoul(buf, 0xffffffffUL, &t) ||
- ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
- return -EINVAL;
-
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
-
- HOTKEY_CONFIG_CRITICAL_START
- hotkey_source_mask = t;
- HOTKEY_CONFIG_CRITICAL_END
-
- rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
- ~hotkey_source_mask);
- hotkey_poll_setup(true);
-
- /* check if events needed by the driver got disabled */
- r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
- & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
-
- mutex_unlock(&hotkey_mutex);
-
- if (rc < 0)
- pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
-
- if (r_ev)
- pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
- r_ev);
-
- tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
-
- return (rc < 0) ? rc : count;
-}
-
-static DEVICE_ATTR_RW(hotkey_source_mask);
-
-/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
-static ssize_t hotkey_poll_freq_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "%d\n", hotkey_poll_freq);
-}
-
-static ssize_t hotkey_poll_freq_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 25, &t))
- return -EINVAL;
-
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
-
- hotkey_poll_set_freq(t);
- hotkey_poll_setup(true);
-
- mutex_unlock(&hotkey_mutex);
-
- tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
-
- return count;
-}
-
-static DEVICE_ATTR_RW(hotkey_poll_freq);
-
-#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
-
-/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
-static ssize_t hotkey_radio_sw_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res;
- res = hotkey_get_wlsw();
- if (res < 0)
- return res;
-
- /* Opportunistic update */
- tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
-
- return sysfs_emit(buf, "%d\n",
- (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
-}
-
-static DEVICE_ATTR_RO(hotkey_radio_sw);
-
-static void hotkey_radio_sw_notify_change(void)
-{
- if (tp_features.hotkey_wlsw)
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "hotkey_radio_sw");
-}
-
-/* sysfs hotkey tablet mode (pollable) --------------------------------- */
-static ssize_t hotkey_tablet_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res, s;
- res = hotkey_get_tablet_mode(&s);
- if (res < 0)
- return res;
-
- return sysfs_emit(buf, "%d\n", !!s);
-}
-
-static DEVICE_ATTR_RO(hotkey_tablet_mode);
-
-static void hotkey_tablet_mode_notify_change(void)
-{
- if (tp_features.hotkey_tablet)
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "hotkey_tablet_mode");
-}
-
-/* sysfs wakeup reason (pollable) -------------------------------------- */
-static ssize_t hotkey_wakeup_reason_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason);
-}
-
-static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
-
-static void hotkey_wakeup_reason_notify_change(void)
-{
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "wakeup_reason");
-}
-
-/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
-static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack);
-}
-
-static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
- hotkey_wakeup_hotunplug_complete_show, NULL);
-
-static void hotkey_wakeup_hotunplug_complete_notify_change(void)
-{
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "wakeup_hotunplug_complete");
-}
-
-/* sysfs adaptive kbd mode --------------------------------------------- */
-
-static int adaptive_keyboard_get_mode(void);
-static int adaptive_keyboard_set_mode(int new_mode);
-
-enum ADAPTIVE_KEY_MODE {
- HOME_MODE,
- WEB_BROWSER_MODE,
- WEB_CONFERENCE_MODE,
- FUNCTION_MODE,
- LAYFLAT_MODE
-};
-
-static ssize_t adaptive_kbd_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int current_mode;
-
- current_mode = adaptive_keyboard_get_mode();
- if (current_mode < 0)
- return current_mode;
-
- return sysfs_emit(buf, "%d\n", current_mode);
-}
-
-static ssize_t adaptive_kbd_mode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
- int res;
-
- if (parse_strtoul(buf, LAYFLAT_MODE, &t))
- return -EINVAL;
-
- res = adaptive_keyboard_set_mode(t);
- return (res < 0) ? res : count;
-}
-
-static DEVICE_ATTR_RW(adaptive_kbd_mode);
-
-static struct attribute *adaptive_kbd_attributes[] = {
- &dev_attr_adaptive_kbd_mode.attr,
- NULL
-};
-
-static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return tp_features.has_adaptive_kbd ? attr->mode : 0;
-}
-
-static const struct attribute_group adaptive_kbd_attr_group = {
- .is_visible = hadaptive_kbd_attr_is_visible,
- .attrs = adaptive_kbd_attributes,
-};
-
-/* --------------------------------------------------------------------- */
-
-static struct attribute *hotkey_attributes[] = {
- &dev_attr_hotkey_enable.attr,
- &dev_attr_hotkey_bios_enabled.attr,
- &dev_attr_hotkey_bios_mask.attr,
- &dev_attr_wakeup_reason.attr,
- &dev_attr_wakeup_hotunplug_complete.attr,
- &dev_attr_hotkey_mask.attr,
- &dev_attr_hotkey_all_mask.attr,
- &dev_attr_hotkey_adaptive_all_mask.attr,
- &dev_attr_hotkey_recommended_mask.attr,
- &dev_attr_hotkey_tablet_mode.attr,
- &dev_attr_hotkey_radio_sw.attr,
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- &dev_attr_hotkey_source_mask.attr,
- &dev_attr_hotkey_poll_freq.attr,
-#endif
- NULL
-};
-
-static umode_t hotkey_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- if (attr == &dev_attr_hotkey_tablet_mode.attr) {
- if (!tp_features.hotkey_tablet)
- return 0;
- } else if (attr == &dev_attr_hotkey_radio_sw.attr) {
- if (!tp_features.hotkey_wlsw)
- return 0;
- }
-
- return attr->mode;
-}
-
-static const struct attribute_group hotkey_attr_group = {
- .is_visible = hotkey_attr_is_visible,
- .attrs = hotkey_attributes,
-};
-
-/*
- * Sync both the hw and sw blocking state of all switches
- */
-static void tpacpi_send_radiosw_update(void)
-{
- int wlsw;
-
- /*
- * We must sync all rfkill controllers *before* issuing any
- * rfkill input events, or we will race the rfkill core input
- * handler.
- *
- * tpacpi_inputdev_send_mutex works as a synchronization point
- * for the above.
- *
- * We optimize to avoid numerous calls to hotkey_get_wlsw.
- */
-
- wlsw = hotkey_get_wlsw();
-
- /* Sync hw blocking state first if it is hw-blocked */
- if (wlsw == TPACPI_RFK_RADIO_OFF)
- tpacpi_rfk_update_hwblock_state(true);
-
- /* Sync hw blocking state last if it is hw-unblocked */
- if (wlsw == TPACPI_RFK_RADIO_ON)
- tpacpi_rfk_update_hwblock_state(false);
-
- /* Issue rfkill input event for WLSW switch */
- if (!(wlsw < 0)) {
- mutex_lock(&tpacpi_inputdev_send_mutex);
-
- input_report_switch(tpacpi_inputdev,
- SW_RFKILL_ALL, (wlsw > 0));
- input_sync(tpacpi_inputdev);
-
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- }
-
- /*
- * this can be unconditional, as we will poll state again
- * if userspace uses the notify to read data
- */
- hotkey_radio_sw_notify_change();
-}
-
-static void hotkey_exit(void)
-{
- mutex_lock(&hotkey_mutex);
- hotkey_poll_stop_sync();
- dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
- "restoring original HKEY status and mask\n");
- /* yes, there is a bitwise or below, we want the
- * functions to be called even if one of them fail */
- if (((tp_features.hotkey_mask &&
- hotkey_mask_set(hotkey_orig_mask)) |
- hotkey_status_set(false)) != 0)
- pr_err("failed to restore hot key mask to BIOS defaults\n");
-
- mutex_unlock(&hotkey_mutex);
-}
-
-/*
- * HKEY quirks:
- * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
- */
-
-#define TPACPI_HK_Q_INIMASK 0x0001
-
-static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
- TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
- TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
- TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
- TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
- TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
- TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
- TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
- TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
- TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
- TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
- TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
- TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
- TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
- TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
- TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
- TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
- TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
- TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
- TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
-};
-
-static int hotkey_init_tablet_mode(void)
-{
- int in_tablet_mode = 0, res;
- char *type = NULL;
-
- if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
- int has_tablet_mode;
-
- in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
- &has_tablet_mode);
- /*
- * The Yoga 11e series has 2 accelerometers described by a
- * BOSC0200 ACPI node. This setup relies on a Windows service
- * which calls special ACPI methods on this node to report
- * the laptop/tent/tablet mode to the EC. The bmc150 iio driver
- * does not support this, so skip the hotkey on these models.
- */
- if (has_tablet_mode && !dual_accel_detect())
- tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
- type = "GMMS";
- } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
- /* For X41t, X60t, X61t Tablets... */
- tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
- in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
- type = "MHKG";
- }
-
- if (!tp_features.hotkey_tablet)
- return 0;
-
- pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
- type, in_tablet_mode ? "tablet" : "laptop");
-
- return in_tablet_mode;
-}
-
-static const struct key_entry keymap_ibm[] __initconst = {
- /* Original hotkey mappings translated scancodes 0x00 - 0x1f */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } },
- /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } },
- /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } },
- /*
- * Volume: firmware always reacts and reprograms the built-in *extra* mixer.
- * Suppressed by default through hotkey_reserved_mask.
- */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } },
- { KE_END }
-};
-
-static const struct key_entry keymap_lenovo[] __initconst = {
- /* Original hotkey mappings translated scancodes 0x00 - 0x1f */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } },
- /*
- * These should be enabled --only-- when ACPI video is disabled and
- * are handled in a special way by the init code.
- */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } },
- /* Suppressed by default through hotkey_reserved_mask. */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } },
- /*
- * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and
- * reprograms the built-in *extra* mixer.
- * T60?, T61, R60?, R61: firmware and EC tries to send these over
- * the regular keyboard (not through tpacpi). There are still weird bugs
- * re. MUTE. May cause the BIOS to interfere with the HDA mixer.
- * Suppressed by default through hotkey_reserved_mask.
- */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } },
- /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } },
- /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } },
- /* Used by "Lenovo Quick Clean" */
- { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } },
- { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } },
- /*
- * All mapping below are for raw untranslated hkey event codes mapped directly
- * after switching to sparse keymap support. The mappings above use translated
- * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key().
- */
- { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */
- { KE_KEY, 0x1320, { KEY_LINK_PHONE } },
- { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } },
- { KE_END }
-};
-
-static int __init hotkey_init(struct ibm_init_struct *iibm)
-{
- enum keymap_index {
- TPACPI_KEYMAP_IBM_GENERIC = 0,
- TPACPI_KEYMAP_LENOVO_GENERIC,
- };
-
- static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
- /* Generic maps (fallback) */
- {
- .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_KEYMAP_IBM_GENERIC,
- },
- {
- .vendor = PCI_VENDOR_ID_LENOVO,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
- },
- };
-
- unsigned long keymap_id, quirks;
- const struct key_entry *keymap;
- bool radiosw_state = false;
- bool tabletsw_state = false;
- int hkeyv, res, status, camera_shutter_state;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "initializing hotkey subdriver\n");
-
- BUG_ON(!tpacpi_inputdev);
- BUG_ON(tpacpi_inputdev->open != NULL ||
- tpacpi_inputdev->close != NULL);
-
- TPACPI_ACPIHANDLE_INIT(hkey);
- mutex_init(&hotkey_mutex);
-
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- mutex_init(&hotkey_thread_data_mutex);
-#endif
-
- /* hotkey not supported on 570 */
- tp_features.hotkey = hkey_handle != NULL;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "hotkeys are %s\n",
- str_supported(tp_features.hotkey));
-
- if (!tp_features.hotkey)
- return -ENODEV;
-
- quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
- ARRAY_SIZE(tpacpi_hotkey_qtable));
-
- tpacpi_disable_brightness_delay();
-
- /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
- A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
- for HKEY interface version 0x100 */
- if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "firmware HKEY interface version: 0x%x\n",
- hkeyv);
-
- switch (hkeyv >> 8) {
- case 1:
- /*
- * MHKV 0x100 in A31, R40, R40e,
- * T4x, X31, and later
- */
-
- /* Paranoia check AND init hotkey_all_mask */
- if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
- "MHKA", "qd")) {
- pr_err("missing MHKA handler, please report this to %s\n",
- TPACPI_MAIL);
- /* Fallback: pre-init for FN+F3,F4,F12 */
- hotkey_all_mask = 0x080cU;
- } else {
- tp_features.hotkey_mask = 1;
- }
- break;
-
- case 2:
- /*
- * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
- */
-
- /* Paranoia check AND init hotkey_all_mask */
- if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
- "MHKA", "dd", 1)) {
- pr_err("missing MHKA handler, please report this to %s\n",
- TPACPI_MAIL);
- /* Fallback: pre-init for FN+F3,F4,F12 */
- hotkey_all_mask = 0x080cU;
- } else {
- tp_features.hotkey_mask = 1;
- }
-
- /*
- * Check if we have an adaptive keyboard, like on the
- * Lenovo Carbon X1 2014 (2nd Gen).
- */
- if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
- "MHKA", "dd", 2)) {
- if (hotkey_adaptive_all_mask != 0)
- tp_features.has_adaptive_kbd = true;
- } else {
- tp_features.has_adaptive_kbd = false;
- hotkey_adaptive_all_mask = 0x0U;
- }
- break;
-
- default:
- pr_err("unknown version of the HKEY interface: 0x%x\n",
- hkeyv);
- pr_err("please report this to %s\n", TPACPI_MAIL);
- break;
- }
- }
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "hotkey masks are %s\n",
- str_supported(tp_features.hotkey_mask));
-
- /* Init hotkey_all_mask if not initialized yet */
- if (!tp_features.hotkey_mask && !hotkey_all_mask &&
- (quirks & TPACPI_HK_Q_INIMASK))
- hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
-
- /* Init hotkey_acpi_mask and hotkey_orig_mask */
- if (tp_features.hotkey_mask) {
- /* hotkey_source_mask *must* be zero for
- * the first hotkey_mask_get to return hotkey_orig_mask */
- mutex_lock(&hotkey_mutex);
- res = hotkey_mask_get();
- mutex_unlock(&hotkey_mutex);
- if (res)
- return res;
-
- hotkey_orig_mask = hotkey_acpi_mask;
- } else {
- hotkey_orig_mask = hotkey_all_mask;
- hotkey_acpi_mask = hotkey_all_mask;
- }
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wlswemul) {
- tp_features.hotkey_wlsw = 1;
- radiosw_state = !!tpacpi_wlsw_emulstate;
- pr_info("radio switch emulation enabled\n");
- } else
-#endif
- /* Not all thinkpads have a hardware radio switch */
- if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
- tp_features.hotkey_wlsw = 1;
- radiosw_state = !!status;
- pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0)));
- }
-
- tabletsw_state = hotkey_init_tablet_mode();
-
- /* Set up key map */
- keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
- ARRAY_SIZE(tpacpi_keymap_qtable));
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "using keymap number %lu\n", keymap_id);
-
- /* Keys which should be reserved on both IBM and Lenovo models */
- hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK |
- TP_ACPI_HKEY_VOLUP_MASK |
- TP_ACPI_HKEY_VOLDWN_MASK |
- TP_ACPI_HKEY_MUTE_MASK;
- /*
- * Reserve brightness up/down unconditionally on IBM models, on Lenovo
- * models these are disabled based on acpi_video_get_backlight_type().
- */
- if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) {
- hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
- TP_ACPI_HKEY_BRGHTDWN_MASK;
- keymap = keymap_ibm;
- } else {
- keymap = keymap_lenovo;
- }
-
- res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL);
- if (res)
- return res;
-
- camera_shutter_state = get_camera_shutter();
- if (camera_shutter_state >= 0) {
- input_set_capability(tpacpi_inputdev, EV_SW, SW_CAMERA_LENS_COVER);
- input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state);
- }
-
- if (tp_features.hotkey_wlsw) {
- input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
- input_report_switch(tpacpi_inputdev,
- SW_RFKILL_ALL, radiosw_state);
- }
- if (tp_features.hotkey_tablet) {
- input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
- input_report_switch(tpacpi_inputdev,
- SW_TABLET_MODE, tabletsw_state);
- }
-
- /* Do not issue duplicate brightness change events to
- * userspace. tpacpi_detect_brightness_capabilities() must have
- * been called before this point */
- if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
- pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
- pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
-
- /* Disable brightness up/down on Lenovo thinkpads when
- * ACPI is handling them, otherwise it is plain impossible
- * for userspace to do something even remotely sane */
- hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
- TP_ACPI_HKEY_BRGHTDWN_MASK;
- }
-
-#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
- & ~hotkey_all_mask
- & ~hotkey_reserved_mask;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "hotkey source mask 0x%08x, polling freq %u\n",
- hotkey_source_mask, hotkey_poll_freq);
-#endif
-
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "enabling firmware HKEY event interface...\n");
- res = hotkey_status_set(true);
- if (res) {
- hotkey_exit();
- return res;
- }
- mutex_lock(&hotkey_mutex);
- res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
- | hotkey_driver_mask)
- & ~hotkey_source_mask);
- mutex_unlock(&hotkey_mutex);
- if (res < 0 && res != -ENXIO) {
- hotkey_exit();
- return res;
- }
- hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
- & ~hotkey_reserved_mask;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
- hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
-
- tpacpi_inputdev->open = &hotkey_inputdev_open;
- tpacpi_inputdev->close = &hotkey_inputdev_close;
-
- hotkey_poll_setup_safe(true);
-
- /* Enable doubletap by default */
- tp_features.trackpoint_doubletap = 1;
-
- return 0;
-}
-
-/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
- * mode, Web conference mode, Function mode and Lay-flat mode.
- * We support Home mode and Function mode currently.
- *
- * Will consider support rest of modes in future.
- *
- */
-static const int adaptive_keyboard_modes[] = {
- HOME_MODE,
-/* WEB_BROWSER_MODE = 2,
- WEB_CONFERENCE_MODE = 3, */
- FUNCTION_MODE
-};
-
-/* press Fn key a while second, it will switch to Function Mode. Then
- * release Fn key, previous mode be restored.
- */
-static bool adaptive_keyboard_mode_is_saved;
-static int adaptive_keyboard_prev_mode;
-
-static int adaptive_keyboard_get_mode(void)
-{
- int mode = 0;
-
- if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
- pr_err("Cannot read adaptive keyboard mode\n");
- return -EIO;
- }
-
- return mode;
-}
-
-static int adaptive_keyboard_set_mode(int new_mode)
-{
- if (new_mode < 0 ||
- new_mode > LAYFLAT_MODE)
- return -EINVAL;
-
- if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
- pr_err("Cannot set adaptive keyboard mode\n");
- return -EIO;
- }
-
- return 0;
-}
-
-static int adaptive_keyboard_get_next_mode(int mode)
-{
- size_t i;
- size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
-
- for (i = 0; i <= max_mode; i++) {
- if (adaptive_keyboard_modes[i] == mode)
- break;
- }
-
- if (i >= max_mode)
- i = 0;
- else
- i++;
-
- return adaptive_keyboard_modes[i];
-}
-
-static void adaptive_keyboard_change_row(void)
-{
- int mode;
-
- if (adaptive_keyboard_mode_is_saved) {
- mode = adaptive_keyboard_prev_mode;
- adaptive_keyboard_mode_is_saved = false;
- } else {
- mode = adaptive_keyboard_get_mode();
- if (mode < 0)
- return;
- mode = adaptive_keyboard_get_next_mode(mode);
- }
-
- adaptive_keyboard_set_mode(mode);
-}
-
-static void adaptive_keyboard_s_quickview_row(void)
-{
- int mode;
-
- mode = adaptive_keyboard_get_mode();
- if (mode < 0)
- return;
-
- adaptive_keyboard_prev_mode = mode;
- adaptive_keyboard_mode_is_saved = true;
-
- adaptive_keyboard_set_mode(FUNCTION_MODE);
-}
-
-/* 0x1000-0x1FFF: key presses */
-static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev)
-{
- /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */
- if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) {
- *send_acpi_ev = false;
-
- /* Original hotkeys may be polled from NVRAM instead */
- unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START;
- if (hotkey_source_mask & (1 << scancode))
- return true;
- }
-
- return tpacpi_input_send_key(hkey, send_acpi_ev);
-}
-
-/* 0x2000-0x2FFF: Wakeup reason */
-static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev)
-{
- switch (hkey) {
- case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
- case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
- hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
- *send_acpi_ev = false;
- break;
-
- case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
- case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
- hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
- *send_acpi_ev = false;
- break;
-
- case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
- case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
- pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
- /* how to auto-heal: */
- /* 2313: woke up from S3, go to S4/S5 */
- /* 2413: woke up from S4, go to S5 */
- break;
-
- default:
- return false;
- }
-
- if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
- pr_info("woke up due to a hot-unplug request...\n");
- hotkey_wakeup_reason_notify_change();
- }
- return true;
-}
-
-/* 0x4000-0x4FFF: dock-related events */
-static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev)
-{
- switch (hkey) {
- case TP_HKEY_EV_UNDOCK_ACK:
- /* ACPI undock operation completed after wakeup */
- hotkey_autosleep_ack = 1;
- pr_info("undocked\n");
- hotkey_wakeup_hotunplug_complete_notify_change();
- return true;
-
- case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
- pr_info("docked into hotplug port replicator\n");
- return true;
- case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
- pr_info("undocked from hotplug port replicator\n");
- return true;
-
- /*
- * Deliberately ignore attaching and detaching the keybord cover to avoid
- * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events
- * to userspace.
- *
- * Please refer to the following thread for more information and a preliminary
- * implementation using the GTOP ("Get Tablet OPtions") interface that could be
- * extended to other attachment options of the ThinkPad X1 Tablet series, such as
- * the Pico cartridge dock module:
- * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/
- */
- case TP_HKEY_EV_KBD_COVER_ATTACH:
- case TP_HKEY_EV_KBD_COVER_DETACH:
- *send_acpi_ev = false;
- return true;
-
- default:
- return false;
- }
-}
-
-/* 0x5000-0x5FFF: human interface helpers */
-static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev)
-{
- switch (hkey) {
- case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
- case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
- return true;
-
- case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
- case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
- tpacpi_input_send_tabletsw();
- hotkey_tablet_mode_notify_change();
- *send_acpi_ev = false;
- return true;
-
- case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
- case TP_HKEY_EV_LID_OPEN: /* Lid opened */
- case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
- /* do not propagate these events */
- *send_acpi_ev = false;
- return true;
-
- default:
- return false;
- }
-}
-
-static void thermal_dump_all_sensors(void);
-static void palmsensor_refresh(void);
-
-/* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
-static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev)
-{
- switch (hkey) {
- case TP_HKEY_EV_THM_TABLE_CHANGED:
- pr_debug("EC reports: Thermal Table has changed\n");
- /* recommended action: do nothing, we don't have
- * Lenovo ATM information */
- return true;
- case TP_HKEY_EV_THM_CSM_COMPLETED:
- pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
- /* Thermal event - pass on to event handler */
- tpacpi_driver_event(hkey);
- return true;
- case TP_HKEY_EV_THM_TRANSFM_CHANGED:
- pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
- /* recommended action: do nothing, we don't have
- * Lenovo ATM information */
- return true;
- case TP_HKEY_EV_ALARM_BAT_HOT:
- pr_crit("THERMAL ALARM: battery is too hot!\n");
- /* recommended action: warn user through gui */
- break;
- case TP_HKEY_EV_ALARM_BAT_XHOT:
- pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
- /* recommended action: immediate sleep/hibernate */
- break;
- case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE:
- pr_debug("Battery Info: battery charge threshold changed\n");
- /* User changed charging threshold. No action needed */
- return true;
- case TP_HKEY_EV_ALARM_SENSOR_HOT:
- pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
- /* recommended action: warn user through gui, that */
- /* some internal component is too hot */
- break;
- case TP_HKEY_EV_ALARM_SENSOR_XHOT:
- pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
- /* recommended action: immediate sleep/hibernate */
- break;
- case TP_HKEY_EV_AC_CHANGED:
- /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
- * AC status changed; can be triggered by plugging or
- * unplugging AC adapter, docking or undocking. */
-
- fallthrough;
-
- case TP_HKEY_EV_KEY_NUMLOCK:
- case TP_HKEY_EV_KEY_FN:
- /* key press events, we just ignore them as long as the EC
- * is still reporting them in the normal keyboard stream */
- *send_acpi_ev = false;
- return true;
-
- case TP_HKEY_EV_KEY_FN_ESC:
- /* Get the media key status to force the status LED to update */
- acpi_evalf(hkey_handle, NULL, "GMKS", "v");
- *send_acpi_ev = false;
- return true;
-
- case TP_HKEY_EV_TABLET_CHANGED:
- tpacpi_input_send_tabletsw();
- hotkey_tablet_mode_notify_change();
- *send_acpi_ev = false;
- return true;
-
- case TP_HKEY_EV_PALM_DETECTED:
- case TP_HKEY_EV_PALM_UNDETECTED:
- /* palm detected - pass on to event handler */
- palmsensor_refresh();
- return true;
-
- default:
- /* report simply as unknown, no sensor dump */
- return false;
- }
-
- thermal_dump_all_sensors();
- return true;
-}
-
-static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev)
-{
- switch (hkey) {
- case TP_HKEY_EV_TRACK_DOUBLETAP:
- if (tp_features.trackpoint_doubletap)
- tpacpi_input_send_key(hkey, send_acpi_ev);
-
- return true;
- default:
- return false;
- }
-}
-
-static void hotkey_notify(struct ibm_struct *ibm, u32 event)
-{
- u32 hkey;
- bool send_acpi_ev;
- bool known_ev;
-
- if (event != 0x80) {
- pr_err("unknown HKEY notification event %d\n", event);
- /* forward it to userspace, maybe it knows how to handle it */
- acpi_bus_generate_netlink_event(
- ibm->acpi->device->pnp.device_class,
- dev_name(&ibm->acpi->device->dev),
- event, 0);
- return;
- }
-
- while (1) {
- if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
- pr_err("failed to retrieve HKEY event\n");
- return;
- }
-
- if (hkey == 0) {
- /* queue empty */
- return;
- }
-
- send_acpi_ev = true;
- known_ev = false;
-
- switch (hkey >> 12) {
- case 1:
- /* 0x1000-0x1FFF: key presses */
- known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev);
- break;
- case 2:
- /* 0x2000-0x2FFF: Wakeup reason */
- known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev);
- break;
- case 3:
- /* 0x3000-0x3FFF: bay-related wakeups */
- switch (hkey) {
- case TP_HKEY_EV_BAYEJ_ACK:
- hotkey_autosleep_ack = 1;
- pr_info("bay ejected\n");
- hotkey_wakeup_hotunplug_complete_notify_change();
- known_ev = true;
- break;
- case TP_HKEY_EV_OPTDRV_EJ:
- /* FIXME: kick libata if SATA link offline */
- known_ev = true;
- break;
- }
- break;
- case 4:
- /* 0x4000-0x4FFF: dock-related events */
- known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev);
- break;
- case 5:
- /* 0x5000-0x5FFF: human interface helpers */
- known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev);
- break;
- case 6:
- /* 0x6000-0x6FFF: thermal alarms/notices and
- * keyboard events */
- known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev);
- break;
- case 7:
- /* 0x7000-0x7FFF: misc */
- if (tp_features.hotkey_wlsw &&
- hkey == TP_HKEY_EV_RFKILL_CHANGED) {
- tpacpi_send_radiosw_update();
- send_acpi_ev = false;
- known_ev = true;
- }
- break;
- case 8:
- /* 0x8000-0x8FFF: misc2 */
- known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev);
- break;
- }
- if (!known_ev) {
- pr_notice("unhandled HKEY event 0x%04x\n", hkey);
- pr_notice("please report the conditions when this event happened to %s\n",
- TPACPI_MAIL);
- }
-
- /* netlink events */
- if (send_acpi_ev) {
- acpi_bus_generate_netlink_event(
- ibm->acpi->device->pnp.device_class,
- dev_name(&ibm->acpi->device->dev),
- event, hkey);
- }
- }
-}
-
-static void hotkey_suspend(void)
-{
- /* Do these on suspend, we get the events on early resume! */
- hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
- hotkey_autosleep_ack = 0;
-
- /* save previous mode of adaptive keyboard of X1 Carbon */
- if (tp_features.has_adaptive_kbd) {
- if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
- "GTRW", "dd", 0)) {
- pr_err("Cannot read adaptive keyboard mode.\n");
- }
- }
-}
-
-static void hotkey_resume(void)
-{
- tpacpi_disable_brightness_delay();
-
- mutex_lock(&hotkey_mutex);
- if (hotkey_status_set(true) < 0 ||
- hotkey_mask_set(hotkey_acpi_mask) < 0)
- pr_err("error while attempting to reset the event firmware interface\n");
- mutex_unlock(&hotkey_mutex);
-
- tpacpi_send_radiosw_update();
- tpacpi_input_send_tabletsw();
- hotkey_tablet_mode_notify_change();
- hotkey_wakeup_reason_notify_change();
- hotkey_wakeup_hotunplug_complete_notify_change();
- hotkey_poll_setup_safe(false);
-
- /* restore previous mode of adapive keyboard of X1 Carbon */
- if (tp_features.has_adaptive_kbd) {
- if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
- adaptive_keyboard_prev_mode)) {
- pr_err("Cannot set adaptive keyboard mode.\n");
- }
- }
-}
-
-/* procfs -------------------------------------------------------------- */
-static int hotkey_read(struct seq_file *m)
-{
- int res, status;
-
- if (!tp_features.hotkey) {
- seq_printf(m, "status:\t\tnot supported\n");
- return 0;
- }
-
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
- res = hotkey_status_get(&status);
- if (!res)
- res = hotkey_mask_get();
- mutex_unlock(&hotkey_mutex);
- if (res)
- return res;
-
- seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
- if (hotkey_all_mask) {
- seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
- seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
- } else {
- seq_printf(m, "mask:\t\tnot supported\n");
- seq_printf(m, "commands:\tenable, disable, reset\n");
- }
-
- return 0;
-}
-
-static void hotkey_enabledisable_warn(bool enable)
-{
- tpacpi_log_usertask("procfs hotkey enable/disable");
- if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
- pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
- pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
-}
-
-static int hotkey_write(char *buf)
-{
- int res;
- u32 mask;
- char *cmd;
-
- if (!tp_features.hotkey)
- return -ENODEV;
-
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
-
- mask = hotkey_user_mask;
-
- res = 0;
- while ((cmd = strsep(&buf, ","))) {
- if (strstarts(cmd, "enable")) {
- hotkey_enabledisable_warn(1);
- } else if (strstarts(cmd, "disable")) {
- hotkey_enabledisable_warn(0);
- res = -EPERM;
- } else if (strstarts(cmd, "reset")) {
- mask = (hotkey_all_mask | hotkey_source_mask)
- & ~hotkey_reserved_mask;
- } else if (sscanf(cmd, "0x%x", &mask) == 1) {
- /* mask set */
- } else if (sscanf(cmd, "%x", &mask) == 1) {
- /* mask set */
- } else {
- res = -EINVAL;
- goto errexit;
- }
- }
-
- if (!res) {
- tpacpi_disclose_usertask("procfs hotkey",
- "set mask to 0x%08x\n", mask);
- res = hotkey_user_mask_set(mask);
- }
-
-errexit:
- mutex_unlock(&hotkey_mutex);
- return res;
-}
-
-static const struct acpi_device_id ibm_htk_device_ids[] = {
- {TPACPI_ACPI_IBM_HKEY_HID, 0},
- {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
- {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
- {"", 0},
-};
-
-static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
- .hid = ibm_htk_device_ids,
- .notify = hotkey_notify,
- .handle = &hkey_handle,
- .type = ACPI_DEVICE_NOTIFY,
-};
-
-static struct ibm_struct hotkey_driver_data = {
- .name = "hotkey",
- .read = hotkey_read,
- .write = hotkey_write,
- .exit = hotkey_exit,
- .resume = hotkey_resume,
- .suspend = hotkey_suspend,
- .acpi = &ibm_hotkey_acpidriver,
-};
-
-/*************************************************************************
- * Bluetooth subdriver
- */
-
-enum {
- /* ACPI GBDC/SBDC bits */
- TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
- TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
- TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
- 0 = disable, 1 = enable */
-};
-
-enum {
- /* ACPI \BLTH commands */
- TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
- TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
- TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
- TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
- TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
-};
-
-#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
-
-static int bluetooth_get_status(void)
-{
- int status;
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_bluetoothemul)
- return (tpacpi_bluetooth_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-#endif
-
- if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
- return -EIO;
-
- return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-}
-
-static int bluetooth_set_status(enum tpacpi_rfkill_state state)
-{
- int status;
-
- vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n",
- str_enable_disable(state == TPACPI_RFK_RADIO_ON));
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_bluetoothemul) {
- tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
- return 0;
- }
-#endif
-
- if (state == TPACPI_RFK_RADIO_ON)
- status = TP_ACPI_BLUETOOTH_RADIOSSW
- | TP_ACPI_BLUETOOTH_RESUMECTRL;
- else
- status = 0;
-
- if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
- return -EIO;
-
- return 0;
-}
-
-/* sysfs bluetooth enable ---------------------------------------------- */
-static ssize_t bluetooth_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
- attr, buf);
-}
-
-static ssize_t bluetooth_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
- attr, buf, count);
-}
-
-static DEVICE_ATTR_RW(bluetooth_enable);
-
-/* --------------------------------------------------------------------- */
-
-static struct attribute *bluetooth_attributes[] = {
- &dev_attr_bluetooth_enable.attr,
- NULL
-};
-
-static umode_t bluetooth_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return tp_features.bluetooth ? attr->mode : 0;
-}
-
-static const struct attribute_group bluetooth_attr_group = {
- .is_visible = bluetooth_attr_is_visible,
- .attrs = bluetooth_attributes,
-};
-
-static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
- .get_status = bluetooth_get_status,
- .set_status = bluetooth_set_status,
-};
-
-static void bluetooth_shutdown(void)
-{
- /* Order firmware to save current state to NVRAM */
- if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
- TP_ACPI_BLTH_SAVE_STATE))
- pr_notice("failed to save bluetooth state to NVRAM\n");
- else
- vdbg_printk(TPACPI_DBG_RFKILL,
- "bluetooth state saved to NVRAM\n");
-}
-
-static void bluetooth_exit(void)
-{
- tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
- bluetooth_shutdown();
-}
-
-static const struct dmi_system_id fwbug_list[] __initconst = {
- {
- .ident = "ThinkPad E485",
- .driver_data = &quirk_btusb_bug,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20KU"),
- },
- },
- {
- .ident = "ThinkPad E585",
- .driver_data = &quirk_btusb_bug,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20KV"),
- },
- },
- {
- .ident = "ThinkPad A285 - 20MW",
- .driver_data = &quirk_btusb_bug,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MW"),
- },
- },
- {
- .ident = "ThinkPad A285 - 20MX",
- .driver_data = &quirk_btusb_bug,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MX"),
- },
- },
- {
- .ident = "ThinkPad A485 - 20MU",
- .driver_data = &quirk_btusb_bug,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MU"),
- },
- },
- {
- .ident = "ThinkPad A485 - 20MV",
- .driver_data = &quirk_btusb_bug,
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MV"),
- },
- },
- {}
-};
-
-static const struct pci_device_id fwbug_cards_ids[] __initconst = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
- {}
-};
-
-
-static int __init have_bt_fwbug(void)
-{
- /*
- * Some AMD based ThinkPads have a firmware bug that calling
- * "GBDC" will cause bluetooth on Intel wireless cards blocked
- */
- if (tp_features.quirks && tp_features.quirks->btusb_bug &&
- pci_dev_present(fwbug_cards_ids)) {
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- FW_BUG "disable bluetooth subdriver for Intel cards\n");
- return 1;
- } else
- return 0;
-}
-
-static int __init bluetooth_init(struct ibm_init_struct *iibm)
-{
- int res;
- int status = 0;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "initializing bluetooth subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(hkey);
-
- /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
- G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
- tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
- acpi_evalf(hkey_handle, &status, "GBDC", "qd");
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "bluetooth is %s, status 0x%02x\n",
- str_supported(tp_features.bluetooth),
- status);
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_bluetoothemul) {
- tp_features.bluetooth = 1;
- pr_info("bluetooth switch emulation enabled\n");
- } else
-#endif
- if (tp_features.bluetooth &&
- !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
- /* no bluetooth hardware present in system */
- tp_features.bluetooth = 0;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "bluetooth hardware not installed\n");
- }
-
- if (!tp_features.bluetooth)
- return -ENODEV;
-
- res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
- &bluetooth_tprfk_ops,
- RFKILL_TYPE_BLUETOOTH,
- TPACPI_RFK_BLUETOOTH_SW_NAME,
- true);
- return res;
-}
-
-/* procfs -------------------------------------------------------------- */
-static int bluetooth_read(struct seq_file *m)
-{
- return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
-}
-
-static int bluetooth_write(char *buf)
-{
- return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
-}
-
-static struct ibm_struct bluetooth_driver_data = {
- .name = "bluetooth",
- .read = bluetooth_read,
- .write = bluetooth_write,
- .exit = bluetooth_exit,
- .shutdown = bluetooth_shutdown,
-};
-
-/*************************************************************************
- * Wan subdriver
- */
-
-enum {
- /* ACPI GWAN/SWAN bits */
- TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
- TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
- TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
- 0 = disable, 1 = enable */
-};
-
-#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
-
-static int wan_get_status(void)
-{
- int status;
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wwanemul)
- return (tpacpi_wwan_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-#endif
-
- if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
- return -EIO;
-
- return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-}
-
-static int wan_set_status(enum tpacpi_rfkill_state state)
-{
- int status;
-
- vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n",
- str_enable_disable(state == TPACPI_RFK_RADIO_ON));
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wwanemul) {
- tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
- return 0;
- }
-#endif
-
- if (state == TPACPI_RFK_RADIO_ON)
- status = TP_ACPI_WANCARD_RADIOSSW
- | TP_ACPI_WANCARD_RESUMECTRL;
- else
- status = 0;
-
- if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
- return -EIO;
-
- return 0;
-}
-
-/* sysfs wan enable ---------------------------------------------------- */
-static ssize_t wan_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
- attr, buf);
-}
-
-static ssize_t wan_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
- attr, buf, count);
-}
-
-static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
- wan_enable_show, wan_enable_store);
-
-/* --------------------------------------------------------------------- */
-
-static struct attribute *wan_attributes[] = {
- &dev_attr_wwan_enable.attr,
- NULL
-};
-
-static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
- int n)
-{
- return tp_features.wan ? attr->mode : 0;
-}
-
-static const struct attribute_group wan_attr_group = {
- .is_visible = wan_attr_is_visible,
- .attrs = wan_attributes,
-};
-
-static const struct tpacpi_rfk_ops wan_tprfk_ops = {
- .get_status = wan_get_status,
- .set_status = wan_set_status,
-};
-
-static void wan_shutdown(void)
-{
- /* Order firmware to save current state to NVRAM */
- if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
- TP_ACPI_WGSV_SAVE_STATE))
- pr_notice("failed to save WWAN state to NVRAM\n");
- else
- vdbg_printk(TPACPI_DBG_RFKILL,
- "WWAN state saved to NVRAM\n");
-}
-
-static void wan_exit(void)
-{
- tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
- wan_shutdown();
-}
-
-static int __init wan_init(struct ibm_init_struct *iibm)
-{
- int res;
- int status = 0;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "initializing wan subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(hkey);
-
- tp_features.wan = hkey_handle &&
- acpi_evalf(hkey_handle, &status, "GWAN", "qd");
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "wan is %s, status 0x%02x\n",
- str_supported(tp_features.wan),
- status);
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wwanemul) {
- tp_features.wan = 1;
- pr_info("wwan switch emulation enabled\n");
- } else
-#endif
- if (tp_features.wan &&
- !(status & TP_ACPI_WANCARD_HWPRESENT)) {
- /* no wan hardware present in system */
- tp_features.wan = 0;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "wan hardware not installed\n");
- }
-
- if (!tp_features.wan)
- return -ENODEV;
-
- res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
- &wan_tprfk_ops,
- RFKILL_TYPE_WWAN,
- TPACPI_RFK_WWAN_SW_NAME,
- true);
- return res;
-}
-
-/* procfs -------------------------------------------------------------- */
-static int wan_read(struct seq_file *m)
-{
- return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
-}
-
-static int wan_write(char *buf)
-{
- return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
-}
-
-static struct ibm_struct wan_driver_data = {
- .name = "wan",
- .read = wan_read,
- .write = wan_write,
- .exit = wan_exit,
- .shutdown = wan_shutdown,
-};
-
-/*************************************************************************
- * UWB subdriver
- */
-
-enum {
- /* ACPI GUWB/SUWB bits */
- TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
- TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
-};
-
-#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
-
-static int uwb_get_status(void)
-{
- int status;
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_uwbemul)
- return (tpacpi_uwb_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-#endif
-
- if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
- return -EIO;
-
- return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
-}
-
-static int uwb_set_status(enum tpacpi_rfkill_state state)
-{
- int status;
-
- vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n",
- str_enable_disable(state == TPACPI_RFK_RADIO_ON));
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_uwbemul) {
- tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
- return 0;
- }
-#endif
-
- if (state == TPACPI_RFK_RADIO_ON)
- status = TP_ACPI_UWB_RADIOSSW;
- else
- status = 0;
-
- if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
- return -EIO;
-
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
- .get_status = uwb_get_status,
- .set_status = uwb_set_status,
-};
-
-static void uwb_exit(void)
-{
- tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
-}
-
-static int __init uwb_init(struct ibm_init_struct *iibm)
-{
- int res;
- int status = 0;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "initializing uwb subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(hkey);
-
- tp_features.uwb = hkey_handle &&
- acpi_evalf(hkey_handle, &status, "GUWB", "qd");
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "uwb is %s, status 0x%02x\n",
- str_supported(tp_features.uwb),
- status);
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_uwbemul) {
- tp_features.uwb = 1;
- pr_info("uwb switch emulation enabled\n");
- } else
-#endif
- if (tp_features.uwb &&
- !(status & TP_ACPI_UWB_HWPRESENT)) {
- /* no uwb hardware present in system */
- tp_features.uwb = 0;
- dbg_printk(TPACPI_DBG_INIT,
- "uwb hardware not installed\n");
- }
-
- if (!tp_features.uwb)
- return -ENODEV;
-
- res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
- &uwb_tprfk_ops,
- RFKILL_TYPE_UWB,
- TPACPI_RFK_UWB_SW_NAME,
- false);
- return res;
-}
-
-static struct ibm_struct uwb_driver_data = {
- .name = "uwb",
- .exit = uwb_exit,
- .flags.experimental = 1,
-};
-
-/*************************************************************************
- * Video subdriver
- */
-
-#ifdef CONFIG_THINKPAD_ACPI_VIDEO
-
-enum video_access_mode {
- TPACPI_VIDEO_NONE = 0,
- TPACPI_VIDEO_570, /* 570 */
- TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
- TPACPI_VIDEO_NEW, /* all others */
-};
-
-enum { /* video status flags, based on VIDEO_570 */
- TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
- TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
- TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
-};
-
-enum { /* TPACPI_VIDEO_570 constants */
- TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
- TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
- * video_status_flags */
- TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
- TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
-};
-
-static enum video_access_mode video_supported;
-static int video_orig_autosw;
-
-static int video_autosw_get(void);
-static int video_autosw_set(int enable);
-
-TPACPI_HANDLE(vid, root,
- "\\_SB.PCI.AGP.VGA", /* 570 */
- "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
- "\\_SB.PCI0.VID0", /* 770e */
- "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
- "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
- "\\_SB.PCI0.AGP.VID", /* all others */
- ); /* R30, R31 */
-
-TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
-
-static int __init video_init(struct ibm_init_struct *iibm)
-{
- int ivga;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(vid);
- if (tpacpi_is_ibm())
- TPACPI_ACPIHANDLE_INIT(vid2);
-
- if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
- /* G41, assume IVGA doesn't change */
- vid_handle = vid2_handle;
-
- if (!vid_handle)
- /* video switching not supported on R30, R31 */
- video_supported = TPACPI_VIDEO_NONE;
- else if (tpacpi_is_ibm() &&
- acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
- /* 570 */
- video_supported = TPACPI_VIDEO_570;
- else if (tpacpi_is_ibm() &&
- acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
- /* 600e/x, 770e, 770x */
- video_supported = TPACPI_VIDEO_770;
- else
- /* all others */
- video_supported = TPACPI_VIDEO_NEW;
-
- vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
- str_supported(video_supported != TPACPI_VIDEO_NONE),
- video_supported);
-
- return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV;
-}
-
-static void video_exit(void)
-{
- dbg_printk(TPACPI_DBG_EXIT,
- "restoring original video autoswitch mode\n");
- if (video_autosw_set(video_orig_autosw))
- pr_err("error while trying to restore original video autoswitch mode\n");
-}
-
-static int video_outputsw_get(void)
-{
- int status = 0;
- int i;
-
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
- TP_ACPI_VIDEO_570_PHSCMD))
- return -EIO;
- status = i & TP_ACPI_VIDEO_570_PHSMASK;
- break;
- case TPACPI_VIDEO_770:
- if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_LCD;
- if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_CRT;
- break;
- case TPACPI_VIDEO_NEW:
- if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
- !acpi_evalf(NULL, &i, "\\VCDC", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_CRT;
-
- if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
- !acpi_evalf(NULL, &i, "\\VCDL", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_LCD;
- if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_DVI;
- break;
- default:
- return -ENOSYS;
- }
-
- return status;
-}
-
-static int video_outputsw_set(int status)
-{
- int autosw;
- int res = 0;
-
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- res = acpi_evalf(NULL, NULL,
- "\\_SB.PHS2", "vdd",
- TP_ACPI_VIDEO_570_PHS2CMD,
- status | TP_ACPI_VIDEO_570_PHS2SET);
- break;
- case TPACPI_VIDEO_770:
- autosw = video_autosw_get();
- if (autosw < 0)
- return autosw;
-
- res = video_autosw_set(1);
- if (res)
- return res;
- res = acpi_evalf(vid_handle, NULL,
- "ASWT", "vdd", status * 0x100, 0);
- if (!autosw && video_autosw_set(autosw)) {
- pr_err("video auto-switch left enabled due to error\n");
- return -EIO;
- }
- break;
- case TPACPI_VIDEO_NEW:
- res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
- acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
- break;
- default:
- return -ENOSYS;
- }
-
- return (res) ? 0 : -EIO;
-}
-
-static int video_autosw_get(void)
-{
- int autosw = 0;
-
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
- return -EIO;
- break;
- case TPACPI_VIDEO_770:
- case TPACPI_VIDEO_NEW:
- if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
- return -EIO;
- break;
- default:
- return -ENOSYS;
- }
-
- return autosw & 1;
-}
-
-static int video_autosw_set(int enable)
-{
- if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
- return -EIO;
- return 0;
-}
-
-static int video_outputsw_cycle(void)
-{
- int autosw = video_autosw_get();
- int res;
-
- if (autosw < 0)
- return autosw;
-
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- res = video_autosw_set(1);
- if (res)
- return res;
- res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
- break;
- case TPACPI_VIDEO_770:
- case TPACPI_VIDEO_NEW:
- res = video_autosw_set(1);
- if (res)
- return res;
- res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
- break;
- default:
- return -ENOSYS;
- }
- if (!autosw && video_autosw_set(autosw)) {
- pr_err("video auto-switch left enabled due to error\n");
- return -EIO;
- }
-
- return (res) ? 0 : -EIO;
-}
-
-static int video_expand_toggle(void)
-{
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
- 0 : -EIO;
- case TPACPI_VIDEO_770:
- return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
- 0 : -EIO;
- case TPACPI_VIDEO_NEW:
- return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
- 0 : -EIO;
- default:
- return -ENOSYS;
- }
- /* not reached */
-}
-
-static int video_read(struct seq_file *m)
-{
- int status, autosw;
-
- if (video_supported == TPACPI_VIDEO_NONE) {
- seq_printf(m, "status:\t\tnot supported\n");
- return 0;
- }
-
- /* Even reads can crash X.org, so... */
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- status = video_outputsw_get();
- if (status < 0)
- return status;
-
- autosw = video_autosw_get();
- if (autosw < 0)
- return autosw;
-
- seq_printf(m, "status:\t\tsupported\n");
- seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0)));
- seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1)));
- if (video_supported == TPACPI_VIDEO_NEW)
- seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3)));
- seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0)));
- seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
- seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
- if (video_supported == TPACPI_VIDEO_NEW)
- seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
- seq_printf(m, "commands:\tauto_enable, auto_disable\n");
- seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
-
- return 0;
-}
-
-static int video_write(char *buf)
-{
- char *cmd;
- int enable, disable, status;
- int res;
-
- if (video_supported == TPACPI_VIDEO_NONE)
- return -ENODEV;
-
- /* Even reads can crash X.org, let alone writes... */
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- enable = 0;
- disable = 0;
-
- while ((cmd = strsep(&buf, ","))) {
- if (strstarts(cmd, "lcd_enable")) {
- enable |= TP_ACPI_VIDEO_S_LCD;
- } else if (strstarts(cmd, "lcd_disable")) {
- disable |= TP_ACPI_VIDEO_S_LCD;
- } else if (strstarts(cmd, "crt_enable")) {
- enable |= TP_ACPI_VIDEO_S_CRT;
- } else if (strstarts(cmd, "crt_disable")) {
- disable |= TP_ACPI_VIDEO_S_CRT;
- } else if (video_supported == TPACPI_VIDEO_NEW &&
- strstarts(cmd, "dvi_enable")) {
- enable |= TP_ACPI_VIDEO_S_DVI;
- } else if (video_supported == TPACPI_VIDEO_NEW &&
- strstarts(cmd, "dvi_disable")) {
- disable |= TP_ACPI_VIDEO_S_DVI;
- } else if (strstarts(cmd, "auto_enable")) {
- res = video_autosw_set(1);
- if (res)
- return res;
- } else if (strstarts(cmd, "auto_disable")) {
- res = video_autosw_set(0);
- if (res)
- return res;
- } else if (strstarts(cmd, "video_switch")) {
- res = video_outputsw_cycle();
- if (res)
- return res;
- } else if (strstarts(cmd, "expand_toggle")) {
- res = video_expand_toggle();
- if (res)
- return res;
- } else
- return -EINVAL;
- }
-
- if (enable || disable) {
- status = video_outputsw_get();
- if (status < 0)
- return status;
- res = video_outputsw_set((status & ~disable) | enable);
- if (res)
- return res;
- }
-
- return 0;
-}
-
-static struct ibm_struct video_driver_data = {
- .name = "video",
- .read = video_read,
- .write = video_write,
- .exit = video_exit,
-};
-
-#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
-
-/*************************************************************************
- * Keyboard backlight subdriver
- */
-
-static enum led_brightness kbdlight_brightness;
-static DEFINE_MUTEX(kbdlight_mutex);
-
-static int kbdlight_set_level(int level)
-{
- int ret = 0;
-
- if (!hkey_handle)
- return -ENXIO;
-
- mutex_lock(&kbdlight_mutex);
-
- if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
- ret = -EIO;
- else
- kbdlight_brightness = level;
-
- mutex_unlock(&kbdlight_mutex);
-
- return ret;
-}
-
-static int kbdlight_get_level(void)
-{
- int status = 0;
-
- if (!hkey_handle)
- return -ENXIO;
-
- if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
- return -EIO;
-
- if (status < 0)
- return status;
-
- return status & 0x3;
-}
-
-static bool kbdlight_is_supported(void)
-{
- int status = 0;
-
- if (!hkey_handle)
- return false;
-
- if (!acpi_has_method(hkey_handle, "MLCG")) {
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
- return false;
- }
-
- if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
- return false;
- }
-
- if (status < 0) {
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
- return false;
- }
-
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
- /*
- * Guessed test for keyboard backlight:
- *
- * Machines with backlight keyboard return:
- * b010100000010000000XX - ThinkPad X1 Carbon 3rd
- * b110100010010000000XX - ThinkPad x230
- * b010100000010000000XX - ThinkPad x240
- * b010100000010000000XX - ThinkPad W541
- * (XX is current backlight level)
- *
- * Machines without backlight keyboard return:
- * b10100001000000000000 - ThinkPad x230
- * b10110001000000000000 - ThinkPad E430
- * b00000000000000000000 - ThinkPad E450
- *
- * Candidate BITs for detection test (XOR):
- * b01000000001000000000
- * ^
- */
- return status & BIT(9);
-}
-
-static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- return kbdlight_set_level(brightness);
-}
-
-static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
-{
- int level;
-
- level = kbdlight_get_level();
- if (level < 0)
- return 0;
-
- return level;
-}
-
-static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
- .led_classdev = {
- .name = "tpacpi::kbd_backlight",
- .max_brightness = 2,
- .flags = LED_BRIGHT_HW_CHANGED,
- .brightness_set_blocking = &kbdlight_sysfs_set,
- .brightness_get = &kbdlight_sysfs_get,
- }
-};
-
-static int __init kbdlight_init(struct ibm_init_struct *iibm)
-{
- int rc;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(hkey);
-
- if (!kbdlight_is_supported()) {
- tp_features.kbdlight = 0;
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
- return -ENODEV;
- }
-
- kbdlight_brightness = kbdlight_sysfs_get(NULL);
- tp_features.kbdlight = 1;
-
- rc = led_classdev_register(&tpacpi_pdev->dev,
- &tpacpi_led_kbdlight.led_classdev);
- if (rc < 0) {
- tp_features.kbdlight = 0;
- return rc;
- }
-
- tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
- TP_ACPI_HKEY_KBD_LIGHT_MASK);
- return 0;
-}
-
-static void kbdlight_exit(void)
-{
- led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
-}
-
-static int kbdlight_set_level_and_update(int level)
-{
- int ret;
- struct led_classdev *led_cdev;
-
- ret = kbdlight_set_level(level);
- led_cdev = &tpacpi_led_kbdlight.led_classdev;
-
- if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
- led_cdev->brightness = level;
-
- return ret;
-}
-
-static int kbdlight_read(struct seq_file *m)
-{
- int level;
-
- if (!tp_features.kbdlight) {
- seq_printf(m, "status:\t\tnot supported\n");
- } else {
- level = kbdlight_get_level();
- if (level < 0)
- seq_printf(m, "status:\t\terror %d\n", level);
- else
- seq_printf(m, "status:\t\t%d\n", level);
- seq_printf(m, "commands:\t0, 1, 2\n");
- }
-
- return 0;
-}
-
-static int kbdlight_write(char *buf)
-{
- char *cmd;
- int res, level = -EINVAL;
-
- if (!tp_features.kbdlight)
- return -ENODEV;
-
- while ((cmd = strsep(&buf, ","))) {
- res = kstrtoint(cmd, 10, &level);
- if (res < 0)
- return res;
- }
-
- if (level >= 3 || level < 0)
- return -EINVAL;
-
- return kbdlight_set_level_and_update(level);
-}
-
-static void kbdlight_suspend(void)
-{
- struct led_classdev *led_cdev;
-
- if (!tp_features.kbdlight)
- return;
-
- led_cdev = &tpacpi_led_kbdlight.led_classdev;
- led_update_brightness(led_cdev);
- led_classdev_suspend(led_cdev);
-}
-
-static void kbdlight_resume(void)
-{
- if (!tp_features.kbdlight)
- return;
-
- led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
-}
-
-static struct ibm_struct kbdlight_driver_data = {
- .name = "kbdlight",
- .read = kbdlight_read,
- .write = kbdlight_write,
- .suspend = kbdlight_suspend,
- .resume = kbdlight_resume,
- .exit = kbdlight_exit,
-};
-
-/*************************************************************************
- * Light (thinklight) subdriver
- */
-
-TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
-TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
-
-static int light_get_status(void)
-{
- int status = 0;
-
- if (tp_features.light_status) {
- if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
- return -EIO;
- return (!!status);
- }
-
- return -ENXIO;
-}
-
-static int light_set_status(int status)
-{
- int rc;
-
- if (tp_features.light) {
- if (cmos_handle) {
- rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
- (status) ?
- TP_CMOS_THINKLIGHT_ON :
- TP_CMOS_THINKLIGHT_OFF);
- } else {
- rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
- (status) ? 1 : 0);
- }
- return (rc) ? 0 : -EIO;
- }
-
- return -ENXIO;
-}
-
-static int light_sysfs_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- return light_set_status((brightness != LED_OFF) ?
- TPACPI_LED_ON : TPACPI_LED_OFF);
-}
-
-static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
-{
- return (light_get_status() == 1) ? LED_ON : LED_OFF;
-}
-
-static struct tpacpi_led_classdev tpacpi_led_thinklight = {
- .led_classdev = {
- .name = "tpacpi::thinklight",
- .max_brightness = 1,
- .brightness_set_blocking = &light_sysfs_set,
- .brightness_get = &light_sysfs_get,
- }
-};
-
-static int __init light_init(struct ibm_init_struct *iibm)
-{
- int rc;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
-
- if (tpacpi_is_ibm()) {
- TPACPI_ACPIHANDLE_INIT(ledb);
- TPACPI_ACPIHANDLE_INIT(lght);
- }
- TPACPI_ACPIHANDLE_INIT(cmos);
-
- /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
- tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
-
- if (tp_features.light)
- /* light status not supported on
- 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
- tp_features.light_status =
- acpi_evalf(ec_handle, NULL, "KBLT", "qv");
-
- vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
- str_supported(tp_features.light),
- str_supported(tp_features.light_status));
-
- if (!tp_features.light)
- return -ENODEV;
-
- rc = led_classdev_register(&tpacpi_pdev->dev,
- &tpacpi_led_thinklight.led_classdev);
-
- if (rc < 0) {
- tp_features.light = 0;
- tp_features.light_status = 0;
- } else {
- rc = 0;
- }
-
- return rc;
-}
-
-static void light_exit(void)
-{
- led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
-}
-
-static int light_read(struct seq_file *m)
-{
- int status;
-
- if (!tp_features.light) {
- seq_printf(m, "status:\t\tnot supported\n");
- } else if (!tp_features.light_status) {
- seq_printf(m, "status:\t\tunknown\n");
- seq_printf(m, "commands:\ton, off\n");
- } else {
- status = light_get_status();
- if (status < 0)
- return status;
- seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0)));
- seq_printf(m, "commands:\ton, off\n");
- }
-
- return 0;
-}
-
-static int light_write(char *buf)
-{
- char *cmd;
- int newstatus = 0;
-
- if (!tp_features.light)
- return -ENODEV;
-
- while ((cmd = strsep(&buf, ","))) {
- if (strstarts(cmd, "on")) {
- newstatus = 1;
- } else if (strstarts(cmd, "off")) {
- newstatus = 0;
- } else
- return -EINVAL;
- }
-
- return light_set_status(newstatus);
-}
-
-static struct ibm_struct light_driver_data = {
- .name = "light",
- .read = light_read,
- .write = light_write,
- .exit = light_exit,
-};
-
-/*************************************************************************
- * CMOS subdriver
- */
-
-/* sysfs cmos_command -------------------------------------------------- */
-static ssize_t cmos_command_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long cmos_cmd;
- int res;
-
- if (parse_strtoul(buf, 21, &cmos_cmd))
- return -EINVAL;
-
- res = issue_thinkpad_cmos_command(cmos_cmd);
- return (res) ? res : count;
-}
-
-static DEVICE_ATTR_WO(cmos_command);
-
-static struct attribute *cmos_attributes[] = {
- &dev_attr_cmos_command.attr,
- NULL
-};
-
-static umode_t cmos_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return cmos_handle ? attr->mode : 0;
-}
-
-static const struct attribute_group cmos_attr_group = {
- .is_visible = cmos_attr_is_visible,
- .attrs = cmos_attributes,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int __init cmos_init(struct ibm_init_struct *iibm)
-{
- vdbg_printk(TPACPI_DBG_INIT,
- "initializing cmos commands subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(cmos);
-
- vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
- str_supported(cmos_handle != NULL));
-
- return cmos_handle ? 0 : -ENODEV;
-}
-
-static int cmos_read(struct seq_file *m)
-{
- /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
- R30, R31, T20-22, X20-21 */
- if (!cmos_handle)
- seq_printf(m, "status:\t\tnot supported\n");
- else {
- seq_printf(m, "status:\t\tsupported\n");
- seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
- }
-
- return 0;
-}
-
-static int cmos_write(char *buf)
-{
- char *cmd;
- int cmos_cmd, res;
-
- while ((cmd = strsep(&buf, ","))) {
- if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
- cmos_cmd >= 0 && cmos_cmd <= 21) {
- /* cmos_cmd set */
- } else
- return -EINVAL;
-
- res = issue_thinkpad_cmos_command(cmos_cmd);
- if (res)
- return res;
- }
-
- return 0;
-}
-
-static struct ibm_struct cmos_driver_data = {
- .name = "cmos",
- .read = cmos_read,
- .write = cmos_write,
-};
-
-/*************************************************************************
- * LED subdriver
- */
-
-enum led_access_mode {
- TPACPI_LED_NONE = 0,
- TPACPI_LED_570, /* 570 */
- TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
- TPACPI_LED_NEW, /* all others */
-};
-
-enum { /* For TPACPI_LED_OLD */
- TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
- TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
- TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
-};
-
-static enum led_access_mode led_supported;
-
-static acpi_handle led_handle;
-
-#define TPACPI_LED_NUMLEDS 16
-static struct tpacpi_led_classdev *tpacpi_leds;
-static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
-static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
- /* there's a limit of 19 chars + NULL before 2.6.26 */
- "tpacpi::power",
- "tpacpi:orange:batt",
- "tpacpi:green:batt",
- "tpacpi::dock_active",
- "tpacpi::bay_active",
- "tpacpi::dock_batt",
- "tpacpi::unknown_led",
- "tpacpi::standby",
- "tpacpi::dock_status1",
- "tpacpi::dock_status2",
- "tpacpi::lid_logo_dot",
- "tpacpi::unknown_led3",
- "tpacpi::thinkvantage",
-};
-#define TPACPI_SAFE_LEDS 0x1481U
-
-static inline bool tpacpi_is_led_restricted(const unsigned int led)
-{
-#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
- return false;
-#else
- return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
-#endif
-}
-
-static int led_get_status(const unsigned int led)
-{
- int status;
- enum led_status_t led_s;
-
- switch (led_supported) {
- case TPACPI_LED_570:
- if (!acpi_evalf(ec_handle,
- &status, "GLED", "dd", 1 << led))
- return -EIO;
- led_s = (status == 0) ?
- TPACPI_LED_OFF :
- ((status == 1) ?
- TPACPI_LED_ON :
- TPACPI_LED_BLINK);
- tpacpi_led_state_cache[led] = led_s;
- return led_s;
- default:
- return -ENXIO;
- }
-
- /* not reached */
-}
-
-static int led_set_status(const unsigned int led,
- const enum led_status_t ledstatus)
-{
- /* off, on, blink. Index is led_status_t */
- static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
- static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
-
- int rc = 0;
-
- switch (led_supported) {
- case TPACPI_LED_570:
- /* 570 */
- if (unlikely(led > 7))
- return -EINVAL;
- if (unlikely(tpacpi_is_led_restricted(led)))
- return -EPERM;
- if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
- (1 << led), led_sled_arg1[ledstatus]))
- return -EIO;
- break;
- case TPACPI_LED_OLD:
- /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
- if (unlikely(led > 7))
- return -EINVAL;
- if (unlikely(tpacpi_is_led_restricted(led)))
- return -EPERM;
- rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
- if (rc >= 0)
- rc = ec_write(TPACPI_LED_EC_HLBL,
- (ledstatus == TPACPI_LED_BLINK) << led);
- if (rc >= 0)
- rc = ec_write(TPACPI_LED_EC_HLCL,
- (ledstatus != TPACPI_LED_OFF) << led);
- break;
- case TPACPI_LED_NEW:
- /* all others */
- if (unlikely(led >= TPACPI_LED_NUMLEDS))
- return -EINVAL;
- if (unlikely(tpacpi_is_led_restricted(led)))
- return -EPERM;
- if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
- led, led_led_arg1[ledstatus]))
- return -EIO;
- break;
- default:
- return -ENXIO;
- }
-
- if (!rc)
- tpacpi_led_state_cache[led] = ledstatus;
-
- return rc;
-}
-
-static int led_sysfs_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- struct tpacpi_led_classdev *data = container_of(led_cdev,
- struct tpacpi_led_classdev, led_classdev);
- enum led_status_t new_state;
-
- if (brightness == LED_OFF)
- new_state = TPACPI_LED_OFF;
- else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
- new_state = TPACPI_LED_ON;
- else
- new_state = TPACPI_LED_BLINK;
-
- return led_set_status(data->led, new_state);
-}
-
-static int led_sysfs_blink_set(struct led_classdev *led_cdev,
- unsigned long *delay_on, unsigned long *delay_off)
-{
- struct tpacpi_led_classdev *data = container_of(led_cdev,
- struct tpacpi_led_classdev, led_classdev);
-
- /* Can we choose the flash rate? */
- if (*delay_on == 0 && *delay_off == 0) {
- /* yes. set them to the hardware blink rate (1 Hz) */
- *delay_on = 500; /* ms */
- *delay_off = 500; /* ms */
- } else if ((*delay_on != 500) || (*delay_off != 500))
- return -EINVAL;
-
- return led_set_status(data->led, TPACPI_LED_BLINK);
-}
-
-static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
-{
- int rc;
-
- struct tpacpi_led_classdev *data = container_of(led_cdev,
- struct tpacpi_led_classdev, led_classdev);
-
- rc = led_get_status(data->led);
-
- if (rc == TPACPI_LED_OFF || rc < 0)
- rc = LED_OFF; /* no error handling in led class :( */
- else
- rc = LED_FULL;
-
- return rc;
-}
-
-static void led_exit(void)
-{
- unsigned int i;
-
- for (i = 0; i < TPACPI_LED_NUMLEDS; i++)
- led_classdev_unregister(&tpacpi_leds[i].led_classdev);
-
- kfree(tpacpi_leds);
-}
-
-static int __init tpacpi_init_led(unsigned int led)
-{
- /* LEDs with no name don't get registered */
- if (!tpacpi_led_names[led])
- return 0;
-
- tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
- tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
- if (led_supported == TPACPI_LED_570)
- tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get;
-
- tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
- tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN;
- tpacpi_leds[led].led = led;
-
- return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev);
-}
-
-static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
- TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
- TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
- TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
-
- TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
- TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
- TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
- TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
- TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
- TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
- TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
- TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
-
- TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
- TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
- TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
- TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
- TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
-
- TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
- TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
- TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
- TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
-
- /* (1) - may have excess leds enabled on MSB */
-
- /* Defaults (order matters, keep last, don't reorder!) */
- { /* Lenovo */
- .vendor = PCI_VENDOR_ID_LENOVO,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = 0x1fffU,
- },
- { /* IBM ThinkPads with no EC version string */
- .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
- .quirks = 0x00ffU,
- },
- { /* IBM ThinkPads with EC version string */
- .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = 0x00bfU,
- },
-};
-
-static enum led_access_mode __init led_init_detect_mode(void)
-{
- acpi_status status;
-
- if (tpacpi_is_ibm()) {
- /* 570 */
- status = acpi_get_handle(ec_handle, "SLED", &led_handle);
- if (ACPI_SUCCESS(status))
- return TPACPI_LED_570;
-
- /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
- status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
- if (ACPI_SUCCESS(status))
- return TPACPI_LED_OLD;
- }
-
- /* most others */
- status = acpi_get_handle(ec_handle, "LED", &led_handle);
- if (ACPI_SUCCESS(status))
- return TPACPI_LED_NEW;
-
- /* R30, R31, and unknown firmwares */
- led_handle = NULL;
- return TPACPI_LED_NONE;
-}
-
-static int __init led_init(struct ibm_init_struct *iibm)
-{
- unsigned int i;
- int rc;
- unsigned long useful_leds;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
-
- led_supported = led_init_detect_mode();
-
- if (led_supported != TPACPI_LED_NONE) {
- useful_leds = tpacpi_check_quirks(led_useful_qtable,
- ARRAY_SIZE(led_useful_qtable));
-
- if (!useful_leds) {
- led_handle = NULL;
- led_supported = TPACPI_LED_NONE;
- }
- }
-
- vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
- str_supported(led_supported), led_supported);
-
- if (led_supported == TPACPI_LED_NONE)
- return -ENODEV;
-
- tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
- GFP_KERNEL);
- if (!tpacpi_leds) {
- pr_err("Out of memory for LED data\n");
- return -ENOMEM;
- }
-
- for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
- tpacpi_leds[i].led = -1;
-
- if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) {
- rc = tpacpi_init_led(i);
- if (rc < 0) {
- led_exit();
- return rc;
- }
- }
- }
-
-#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
- pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
-#endif
- return 0;
-}
-
-#define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s))
-
-static int led_read(struct seq_file *m)
-{
- if (!led_supported) {
- seq_printf(m, "status:\t\tnot supported\n");
- return 0;
- }
- seq_printf(m, "status:\t\tsupported\n");
-
- if (led_supported == TPACPI_LED_570) {
- /* 570 */
- int i, status;
- for (i = 0; i < 8; i++) {
- status = led_get_status(i);
- if (status < 0)
- return -EIO;
- seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status));
- }
- }
-
- seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
-
- return 0;
-}
-
-static int led_write(char *buf)
-{
- char *cmd;
- int led, rc;
- enum led_status_t s;
-
- if (!led_supported)
- return -ENODEV;
-
- while ((cmd = strsep(&buf, ","))) {
- if (sscanf(cmd, "%d", &led) != 1)
- return -EINVAL;
-
- if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1))
- return -ENODEV;
-
- if (tpacpi_leds[led].led < 0)
- return -ENODEV;
-
- if (strstr(cmd, "off")) {
- s = TPACPI_LED_OFF;
- } else if (strstr(cmd, "on")) {
- s = TPACPI_LED_ON;
- } else if (strstr(cmd, "blink")) {
- s = TPACPI_LED_BLINK;
- } else {
- return -EINVAL;
- }
-
- rc = led_set_status(led, s);
- if (rc < 0)
- return rc;
- }
-
- return 0;
-}
-
-static struct ibm_struct led_driver_data = {
- .name = "led",
- .read = led_read,
- .write = led_write,
- .exit = led_exit,
-};
-
-/*************************************************************************
- * Beep subdriver
- */
-
-TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
-
-#define TPACPI_BEEP_Q1 0x0001
-
-static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
- TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
- TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
-};
-
-static int __init beep_init(struct ibm_init_struct *iibm)
-{
- unsigned long quirks;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
-
- TPACPI_ACPIHANDLE_INIT(beep);
-
- vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
- str_supported(beep_handle != NULL));
-
- quirks = tpacpi_check_quirks(beep_quirk_table,
- ARRAY_SIZE(beep_quirk_table));
-
- tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
-
- return (beep_handle) ? 0 : -ENODEV;
-}
-
-static int beep_read(struct seq_file *m)
-{
- if (!beep_handle)
- seq_printf(m, "status:\t\tnot supported\n");
- else {
- seq_printf(m, "status:\t\tsupported\n");
- seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
- }
-
- return 0;
-}
-
-static int beep_write(char *buf)
-{
- char *cmd;
- int beep_cmd;
-
- if (!beep_handle)
- return -ENODEV;
-
- while ((cmd = strsep(&buf, ","))) {
- if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
- beep_cmd >= 0 && beep_cmd <= 17) {
- /* beep_cmd set */
- } else
- return -EINVAL;
- if (tp_features.beep_needs_two_args) {
- if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
- beep_cmd, 0))
- return -EIO;
- } else {
- if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
- beep_cmd))
- return -EIO;
- }
- }
-
- return 0;
-}
-
-static struct ibm_struct beep_driver_data = {
- .name = "beep",
- .read = beep_read,
- .write = beep_write,
-};
-
-/*************************************************************************
- * Thermal subdriver
- */
-
-enum thermal_access_mode {
- TPACPI_THERMAL_NONE = 0, /* No thermal support */
- TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
- TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
- TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
- TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */
- TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
-};
-
-enum { /* TPACPI_THERMAL_TPEC_* */
- TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
- TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
- TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */
- TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */
- TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
- TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
-
- TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
-};
-
-
-#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
-struct ibm_thermal_sensors_struct {
- s32 temp[TPACPI_MAX_THERMAL_SENSORS];
-};
-
-static const struct tpacpi_quirk thermal_quirk_table[] __initconst = {
- /* Non-standard address for thermal registers on some ThinkPads */
- TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */
- TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/
- TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */
- TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/
- TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */
- TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/
- TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/
- TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/
- TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/
-};
-
-static enum thermal_access_mode thermal_read_mode;
-static bool thermal_use_labels;
-static bool thermal_with_ns_address; /* Non-standard thermal reg address */
-
-/* Function to check thermal read mode */
-static enum thermal_access_mode __init thermal_read_mode_check(void)
-{
- u8 t, ta1, ta2, ver = 0;
- int i;
- int acpi_tmp7;
-
- acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
-
- if (thinkpad_id.ec_model) {
- /*
- * Direct EC access mode: sensors at registers 0x78-0x7F,
- * 0xC0-0xC7. Registers return 0x00 for non-implemented,
- * thermal sensors return 0x80 when not available.
- *
- * In some special cases (when Power Supply ID is 0xC2)
- * above rule causes thermal control issues. Offset 0xEF
- * determines EC version. 0xC0-0xC7 are not thermal registers
- * in Ver 3.
- */
- if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
- pr_warn("Thinkpad ACPI EC unable to access EC version\n");
-
- /* Quirks to check non-standard EC */
- thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table,
- ARRAY_SIZE(thermal_quirk_table));
-
- /* Support for Thinkpads with non-standard address */
- if (thermal_with_ns_address) {
- pr_info("ECFW with non-standard thermal registers found\n");
- return TPACPI_THERMAL_TPEC_12;
- }
-
- ta1 = ta2 = 0;
- for (i = 0; i < 8; i++) {
- if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
- ta1 |= t;
- } else {
- ta1 = 0;
- break;
- }
- if (ver < 3) {
- if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
- ta2 |= t;
- } else {
- ta1 = 0;
- break;
- }
- }
- }
-
- if (ta1 == 0) {
- /* This is sheer paranoia, but we handle it anyway */
- if (acpi_tmp7) {
- pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
- return TPACPI_THERMAL_ACPI_TMP07;
- }
- pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
- return TPACPI_THERMAL_NONE;
- }
-
- if (ver >= 3) {
- thermal_use_labels = true;
- return TPACPI_THERMAL_TPEC_8;
- }
-
- return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
- }
-
- if (acpi_tmp7) {
- if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
- /* 600e/x, 770e, 770x */
- return TPACPI_THERMAL_ACPI_UPDT;
- }
- /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
- return TPACPI_THERMAL_ACPI_TMP07;
- }
-
- /* temperatures not supported on 570, G4x, R30, R31, R32 */
- return TPACPI_THERMAL_NONE;
-}
-
-/* idx is zero-based */
-static int thermal_get_sensor(int idx, s32 *value)
-{
- int t;
- s8 tmp;
- char tmpi[5];
-
- t = TP_EC_THERMAL_TMP0;
-
- switch (thermal_read_mode) {
-#if TPACPI_MAX_THERMAL_SENSORS >= 16
- case TPACPI_THERMAL_TPEC_16:
- if (idx >= 8 && idx <= 15) {
- t = TP_EC_THERMAL_TMP8;
- idx -= 8;
- }
-#endif
- fallthrough;
- case TPACPI_THERMAL_TPEC_8:
- if (idx <= 7) {
- if (!acpi_ec_read(t + idx, &tmp))
- return -EIO;
- *value = tmp * 1000;
- return 0;
- }
- break;
-
- /* The Non-standard EC uses 12 Thermal areas */
- case TPACPI_THERMAL_TPEC_12:
- if (idx >= 12)
- return -EINVAL;
-
- t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx :
- TP_EC_THERMAL_TMP8_NS + (idx - 8);
-
- if (!acpi_ec_read(t, &tmp))
- return -EIO;
-
- *value = tmp * MILLIDEGREE_PER_DEGREE;
- return 0;
-
- case TPACPI_THERMAL_ACPI_UPDT:
- if (idx <= 7) {
- snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
- if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
- return -EIO;
- if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
- return -EIO;
- *value = (t - 2732) * 100;
- return 0;
- }
- break;
-
- case TPACPI_THERMAL_ACPI_TMP07:
- if (idx <= 7) {
- snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
- if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
- return -EIO;
- if (t > 127 || t < -127)
- t = TP_EC_THERMAL_TMP_NA;
- *value = t * 1000;
- return 0;
- }
- break;
-
- case TPACPI_THERMAL_NONE:
- default:
- return -ENOSYS;
- }
-
- return -EINVAL;
-}
-
-static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
-{
- int res, i, n;
-
- if (!s)
- return -EINVAL;
-
- if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
- n = 16;
- else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12)
- n = 12;
- else
- n = 8;
-
- for (i = 0 ; i < n; i++) {
- res = thermal_get_sensor(i, &s->temp[i]);
- if (res)
- return res;
- }
-
- return n;
-}
-
-static void thermal_dump_all_sensors(void)
-{
- int n, i;
- struct ibm_thermal_sensors_struct t;
-
- n = thermal_get_sensors(&t);
- if (n <= 0)
- return;
-
- pr_notice("temperatures (Celsius):");
-
- for (i = 0; i < n; i++) {
- if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
- pr_cont(" %d", (int)(t.temp[i] / 1000));
- else
- pr_cont(" N/A");
- }
-
- pr_cont("\n");
-}
-
-/* sysfs temp##_input -------------------------------------------------- */
-
-static ssize_t thermal_temp_input_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct sensor_device_attribute *sensor_attr =
- to_sensor_dev_attr(attr);
- int idx = sensor_attr->index;
- s32 value;
- int res;
-
- res = thermal_get_sensor(idx, &value);
- if (res)
- return res;
- if (value == TPACPI_THERMAL_SENSOR_NA)
- return -ENXIO;
-
- return sysfs_emit(buf, "%d\n", value);
-}
-
-#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
- SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
- thermal_temp_input_show, NULL, _idxB)
-
-static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
- THERMAL_SENSOR_ATTR_TEMP(1, 0),
- THERMAL_SENSOR_ATTR_TEMP(2, 1),
- THERMAL_SENSOR_ATTR_TEMP(3, 2),
- THERMAL_SENSOR_ATTR_TEMP(4, 3),
- THERMAL_SENSOR_ATTR_TEMP(5, 4),
- THERMAL_SENSOR_ATTR_TEMP(6, 5),
- THERMAL_SENSOR_ATTR_TEMP(7, 6),
- THERMAL_SENSOR_ATTR_TEMP(8, 7),
- THERMAL_SENSOR_ATTR_TEMP(9, 8),
- THERMAL_SENSOR_ATTR_TEMP(10, 9),
- THERMAL_SENSOR_ATTR_TEMP(11, 10),
- THERMAL_SENSOR_ATTR_TEMP(12, 11),
- THERMAL_SENSOR_ATTR_TEMP(13, 12),
- THERMAL_SENSOR_ATTR_TEMP(14, 13),
- THERMAL_SENSOR_ATTR_TEMP(15, 14),
- THERMAL_SENSOR_ATTR_TEMP(16, 15),
-};
-
-#define THERMAL_ATTRS(X) \
- &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
-
-static struct attribute *thermal_temp_input_attr[] = {
- THERMAL_ATTRS(0),
- THERMAL_ATTRS(1),
- THERMAL_ATTRS(2),
- THERMAL_ATTRS(3),
- THERMAL_ATTRS(4),
- THERMAL_ATTRS(5),
- THERMAL_ATTRS(6),
- THERMAL_ATTRS(7),
- THERMAL_ATTRS(8),
- THERMAL_ATTRS(9),
- THERMAL_ATTRS(10),
- THERMAL_ATTRS(11),
- THERMAL_ATTRS(12),
- THERMAL_ATTRS(13),
- THERMAL_ATTRS(14),
- THERMAL_ATTRS(15),
- NULL
-};
-
-#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
-
-static umode_t thermal_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- struct device_attribute *dev_attr = to_dev_attr(attr);
- struct sensor_device_attribute *sensor_attr =
- to_sensor_dev_attr(dev_attr);
-
- int idx = sensor_attr->index;
-
- switch (thermal_read_mode) {
- case TPACPI_THERMAL_NONE:
- return 0;
-
- case TPACPI_THERMAL_ACPI_TMP07:
- case TPACPI_THERMAL_ACPI_UPDT:
- case TPACPI_THERMAL_TPEC_8:
- if (idx >= 8)
- return 0;
- break;
-
- case TPACPI_THERMAL_TPEC_12:
- if (idx >= 12)
- return 0;
- break;
-
- default:
- break;
-
- }
-
- return attr->mode;
-}
-
-static const struct attribute_group thermal_attr_group = {
- .is_visible = thermal_attr_is_visible,
- .attrs = thermal_temp_input_attr,
-};
-
-#undef THERMAL_SENSOR_ATTR_TEMP
-#undef THERMAL_ATTRS
-
-static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- return sysfs_emit(buf, "CPU\n");
-}
-static DEVICE_ATTR_RO(temp1_label);
-
-static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- return sysfs_emit(buf, "GPU\n");
-}
-static DEVICE_ATTR_RO(temp2_label);
-
-static struct attribute *temp_label_attributes[] = {
- &dev_attr_temp1_label.attr,
- &dev_attr_temp2_label.attr,
- NULL
-};
-
-static umode_t temp_label_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return thermal_use_labels ? attr->mode : 0;
-}
-
-static const struct attribute_group temp_label_attr_group = {
- .is_visible = temp_label_attr_is_visible,
- .attrs = temp_label_attributes,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int __init thermal_init(struct ibm_init_struct *iibm)
-{
- vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
-
- thermal_read_mode = thermal_read_mode_check();
-
- vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
- str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
- thermal_read_mode);
-
- return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV;
-}
-
-static int thermal_read(struct seq_file *m)
-{
- int n, i;
- struct ibm_thermal_sensors_struct t;
-
- n = thermal_get_sensors(&t);
- if (unlikely(n < 0))
- return n;
-
- seq_printf(m, "temperatures:\t");
-
- if (n > 0) {
- for (i = 0; i < (n - 1); i++)
- seq_printf(m, "%d ", t.temp[i] / 1000);
- seq_printf(m, "%d\n", t.temp[i] / 1000);
- } else
- seq_printf(m, "not supported\n");
-
- return 0;
-}
-
-static struct ibm_struct thermal_driver_data = {
- .name = "thermal",
- .read = thermal_read,
-};
-
-/*************************************************************************
- * Backlight/brightness subdriver
- */
-
-#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
-
-/*
- * ThinkPads can read brightness from two places: EC HBRV (0x31), or
- * CMOS NVRAM byte 0x5E, bits 0-3.
- *
- * EC HBRV (0x31) has the following layout
- * Bit 7: unknown function
- * Bit 6: unknown function
- * Bit 5: Z: honour scale changes, NZ: ignore scale changes
- * Bit 4: must be set to zero to avoid problems
- * Bit 3-0: backlight brightness level
- *
- * brightness_get_raw returns status data in the HBRV layout
- *
- * WARNING: The X61 has been verified to use HBRV for something else, so
- * this should be used _only_ on IBM ThinkPads, and maybe with some careful
- * testing on the very early *60 Lenovo models...
- */
-
-enum {
- TP_EC_BACKLIGHT = 0x31,
-
- /* TP_EC_BACKLIGHT bitmasks */
- TP_EC_BACKLIGHT_LVLMSK = 0x1F,
- TP_EC_BACKLIGHT_CMDMSK = 0xE0,
- TP_EC_BACKLIGHT_MAPSW = 0x20,
-};
-
-enum tpacpi_brightness_access_mode {
- TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
- TPACPI_BRGHT_MODE_EC, /* EC control */
- TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
- TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
- TPACPI_BRGHT_MODE_MAX
-};
-
-static struct backlight_device *ibm_backlight_device;
-
-static enum tpacpi_brightness_access_mode brightness_mode =
- TPACPI_BRGHT_MODE_MAX;
-
-static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
-
-static struct mutex brightness_mutex;
-
-/* NVRAM brightness access */
-static unsigned int tpacpi_brightness_nvram_get(void)
-{
- u8 lnvram;
-
- lockdep_assert_held(&brightness_mutex);
-
- lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
- & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
- >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
- lnvram &= bright_maxlvl;
-
- return lnvram;
-}
-
-static void tpacpi_brightness_checkpoint_nvram(void)
-{
- u8 lec = 0;
- u8 b_nvram;
-
- if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
- return;
-
- vdbg_printk(TPACPI_DBG_BRGHT,
- "trying to checkpoint backlight level to NVRAM...\n");
-
- if (mutex_lock_killable(&brightness_mutex) < 0)
- return;
-
- if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
- goto unlock;
- lec &= TP_EC_BACKLIGHT_LVLMSK;
- b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
-
- if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
- >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
- /* NVRAM needs update */
- b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
- TP_NVRAM_POS_LEVEL_BRIGHTNESS);
- b_nvram |= lec;
- nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
- dbg_printk(TPACPI_DBG_BRGHT,
- "updated NVRAM backlight level to %u (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- } else
- vdbg_printk(TPACPI_DBG_BRGHT,
- "NVRAM backlight level already is %u (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
-
-unlock:
- mutex_unlock(&brightness_mutex);
-}
-
-
-static int tpacpi_brightness_get_raw(int *status)
-{
- u8 lec = 0;
-
- lockdep_assert_held(&brightness_mutex);
-
- switch (brightness_mode) {
- case TPACPI_BRGHT_MODE_UCMS_STEP:
- *status = tpacpi_brightness_nvram_get();
- return 0;
- case TPACPI_BRGHT_MODE_EC:
- case TPACPI_BRGHT_MODE_ECNVRAM:
- if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
- return -EIO;
- *status = lec;
- return 0;
- default:
- return -ENXIO;
- }
-}
-
-/* do NOT call with illegal backlight level value */
-static int tpacpi_brightness_set_ec(unsigned int value)
-{
- u8 lec = 0;
-
- lockdep_assert_held(&brightness_mutex);
-
- if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
- return -EIO;
-
- if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
- (lec & TP_EC_BACKLIGHT_CMDMSK) |
- (value & TP_EC_BACKLIGHT_LVLMSK))))
- return -EIO;
-
- return 0;
-}
-
-static int tpacpi_brightness_set_ucmsstep(unsigned int value)
-{
- int cmos_cmd, inc;
- unsigned int current_value, i;
-
- lockdep_assert_held(&brightness_mutex);
-
- current_value = tpacpi_brightness_nvram_get();
-
- if (value == current_value)
- return 0;
-
- cmos_cmd = (value > current_value) ?
- TP_CMOS_BRIGHTNESS_UP :
- TP_CMOS_BRIGHTNESS_DOWN;
- inc = (value > current_value) ? 1 : -1;
-
- for (i = current_value; i != value; i += inc)
- if (issue_thinkpad_cmos_command(cmos_cmd))
- return -EIO;
-
- return 0;
-}
-
-/* May return EINTR which can always be mapped to ERESTARTSYS */
-static int brightness_set(unsigned int value)
-{
- int res;
-
- if (value > bright_maxlvl)
- return -EINVAL;
-
- vdbg_printk(TPACPI_DBG_BRGHT,
- "set backlight level to %d\n", value);
-
- res = mutex_lock_killable(&brightness_mutex);
- if (res < 0)
- return res;
-
- switch (brightness_mode) {
- case TPACPI_BRGHT_MODE_EC:
- case TPACPI_BRGHT_MODE_ECNVRAM:
- res = tpacpi_brightness_set_ec(value);
- break;
- case TPACPI_BRGHT_MODE_UCMS_STEP:
- res = tpacpi_brightness_set_ucmsstep(value);
- break;
- default:
- res = -ENXIO;
- }
-
- mutex_unlock(&brightness_mutex);
- return res;
-}
-
-/* sysfs backlight class ----------------------------------------------- */
-
-static int brightness_update_status(struct backlight_device *bd)
-{
- int level = backlight_get_brightness(bd);
-
- dbg_printk(TPACPI_DBG_BRGHT,
- "backlight: attempt to set level to %d\n",
- level);
-
- /* it is the backlight class's job (caller) to handle
- * EINTR and other errors properly */
- return brightness_set(level);
-}
-
-static int brightness_get(struct backlight_device *bd)
-{
- int status, res;
-
- res = mutex_lock_killable(&brightness_mutex);
- if (res < 0)
- return 0;
-
- res = tpacpi_brightness_get_raw(&status);
-
- mutex_unlock(&brightness_mutex);
-
- if (res < 0)
- return 0;
-
- return status & TP_EC_BACKLIGHT_LVLMSK;
-}
-
-static void tpacpi_brightness_notify_change(void)
-{
- backlight_force_update(ibm_backlight_device,
- BACKLIGHT_UPDATE_HOTKEY);
-}
-
-static const struct backlight_ops ibm_backlight_data = {
- .get_brightness = brightness_get,
- .update_status = brightness_update_status,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used)
-{
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- acpi_status status;
- int rc;
-
- status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer);
- if (ACPI_FAILURE(status))
- return 0;
-
- obj = buffer.pointer;
- if (!obj || obj->type != ACPI_TYPE_PACKAGE) {
- acpi_handle_info(adev->handle,
- "Unknown _BCL data, please report this to %s\n",
- TPACPI_MAIL);
- rc = 0;
- } else {
- rc = obj->package.count;
- }
- kfree(obj);
-
- return rc;
-}
-
-/*
- * Call _BCL method of video device. On some ThinkPads this will
- * switch the firmware to the ACPI brightness control mode.
- */
-
-static int __init tpacpi_query_bcl_levels(acpi_handle handle)
-{
- struct acpi_device *device;
-
- device = acpi_fetch_acpi_dev(handle);
- if (!device)
- return 0;
-
- return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL);
-}
-
-
-/*
- * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
- */
-static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
-{
- acpi_handle video_device;
- int bcl_levels = 0;
-
- tpacpi_acpi_handle_locate("video", NULL, &video_device);
- if (video_device)
- bcl_levels = tpacpi_query_bcl_levels(video_device);
-
- tp_features.bright_acpimode = (bcl_levels > 0);
-
- return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
-}
-
-/*
- * These are only useful for models that have only one possibility
- * of GPU. If the BIOS model handles both ATI and Intel, don't use
- * these quirks.
- */
-#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
-#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
-#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
-
-static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
- /* Models with ATI GPUs known to require ECNVRAM mode */
- TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
-
- /* Models with ATI GPUs that can use ECNVRAM */
- TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
- TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
- TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
- TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
-
- /* Models with Intel Extreme Graphics 2 */
- TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
- TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
- TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
-
- /* Models with Intel GMA900 */
- TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
- TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
- TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
-};
-
-/*
- * Returns < 0 for error, otherwise sets tp_features.bright_*
- * and bright_maxlvl.
- */
-static void __init tpacpi_detect_brightness_capabilities(void)
-{
- unsigned int b;
-
- vdbg_printk(TPACPI_DBG_INIT,
- "detecting firmware brightness interface capabilities\n");
-
- /* we could run a quirks check here (same table used by
- * brightness_init) if needed */
-
- /*
- * We always attempt to detect acpi support, so as to switch
- * Lenovo Vista BIOS to ACPI brightness mode even if we are not
- * going to publish a backlight interface
- */
- b = tpacpi_check_std_acpi_brightness_support();
- switch (b) {
- case 16:
- bright_maxlvl = 15;
- break;
- case 8:
- case 0:
- bright_maxlvl = 7;
- break;
- default:
- tp_features.bright_unkfw = 1;
- bright_maxlvl = b - 1;
- }
- pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
-}
-
-static int __init brightness_init(struct ibm_init_struct *iibm)
-{
- struct backlight_properties props;
- int b;
- unsigned long quirks;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
-
- mutex_init(&brightness_mutex);
-
- quirks = tpacpi_check_quirks(brightness_quirk_table,
- ARRAY_SIZE(brightness_quirk_table));
-
- /* tpacpi_detect_brightness_capabilities() must have run already */
-
- /* if it is unknown, we don't handle it: it wouldn't be safe */
- if (tp_features.bright_unkfw)
- return -ENODEV;
-
- if (!brightness_enable) {
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
- "brightness support disabled by module parameter\n");
- return -ENODEV;
- }
-
- if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
- if (brightness_enable > 1) {
- pr_info("Standard ACPI backlight interface available, not loading native one\n");
- return -ENODEV;
- } else if (brightness_enable == 1) {
- pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
- return -ENODEV;
- }
- } else if (!tp_features.bright_acpimode) {
- pr_notice("ACPI backlight interface not available\n");
- return -ENODEV;
- }
-
- pr_notice("ACPI native brightness control enabled\n");
-
- /*
- * Check for module parameter bogosity, note that we
- * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
- * able to detect "unspecified"
- */
- if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
- return -EINVAL;
-
- /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
- if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
- brightness_mode == TPACPI_BRGHT_MODE_MAX) {
- if (quirks & TPACPI_BRGHT_Q_EC)
- brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
- else
- brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
-
- dbg_printk(TPACPI_DBG_BRGHT,
- "driver auto-selected brightness_mode=%d\n",
- brightness_mode);
- }
-
- /* Safety */
- if (!tpacpi_is_ibm() &&
- (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
- brightness_mode == TPACPI_BRGHT_MODE_EC))
- return -EINVAL;
-
- if (tpacpi_brightness_get_raw(&b) < 0)
- return -ENODEV;
-
- memset(&props, 0, sizeof(struct backlight_properties));
- props.type = BACKLIGHT_PLATFORM;
- props.max_brightness = bright_maxlvl;
- props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
- ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
- NULL, NULL,
- &ibm_backlight_data,
- &props);
- if (IS_ERR(ibm_backlight_device)) {
- int rc = PTR_ERR(ibm_backlight_device);
- ibm_backlight_device = NULL;
- pr_err("Could not register backlight device\n");
- return rc;
- }
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
- "brightness is supported\n");
-
- if (quirks & TPACPI_BRGHT_Q_ASK) {
- pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
- brightness_mode);
- pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
- TPACPI_MAIL);
- }
-
- /* Added by mistake in early 2007. Probably useless, but it could
- * be working around some unknown firmware problem where the value
- * read at startup doesn't match the real hardware state... so leave
- * it in place just in case */
- backlight_update_status(ibm_backlight_device);
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
- "brightness: registering brightness hotkeys as change notification\n");
- tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
- | TP_ACPI_HKEY_BRGHTUP_MASK
- | TP_ACPI_HKEY_BRGHTDWN_MASK);
- return 0;
-}
-
-static void brightness_suspend(void)
-{
- tpacpi_brightness_checkpoint_nvram();
-}
-
-static void brightness_shutdown(void)
-{
- tpacpi_brightness_checkpoint_nvram();
-}
-
-static void brightness_exit(void)
-{
- if (ibm_backlight_device) {
- vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
- "calling backlight_device_unregister()\n");
- backlight_device_unregister(ibm_backlight_device);
- }
-
- tpacpi_brightness_checkpoint_nvram();
-}
-
-static int brightness_read(struct seq_file *m)
-{
- int level;
-
- level = brightness_get(NULL);
- if (level < 0) {
- seq_printf(m, "level:\t\tunreadable\n");
- } else {
- seq_printf(m, "level:\t\t%d\n", level);
- seq_printf(m, "commands:\tup, down\n");
- seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
- bright_maxlvl);
- }
-
- return 0;
-}
-
-static int brightness_write(char *buf)
-{
- int level;
- int rc;
- char *cmd;
-
- level = brightness_get(NULL);
- if (level < 0)
- return level;
-
- while ((cmd = strsep(&buf, ","))) {
- if (strstarts(cmd, "up")) {
- if (level < bright_maxlvl)
- level++;
- } else if (strstarts(cmd, "down")) {
- if (level > 0)
- level--;
- } else if (sscanf(cmd, "level %d", &level) == 1 &&
- level >= 0 && level <= bright_maxlvl) {
- /* new level set */
- } else
- return -EINVAL;
- }
-
- tpacpi_disclose_usertask("procfs brightness",
- "set level to %d\n", level);
-
- /*
- * Now we know what the final level should be, so we try to set it.
- * Doing it this way makes the syscall restartable in case of EINTR
- */
- rc = brightness_set(level);
- if (!rc && ibm_backlight_device)
- backlight_force_update(ibm_backlight_device,
- BACKLIGHT_UPDATE_SYSFS);
- return (rc == -EINTR) ? -ERESTARTSYS : rc;
-}
-
-static struct ibm_struct brightness_driver_data = {
- .name = "brightness",
- .read = brightness_read,
- .write = brightness_write,
- .exit = brightness_exit,
- .suspend = brightness_suspend,
- .shutdown = brightness_shutdown,
-};
-
-/*************************************************************************
- * Volume subdriver
- */
-
-/*
- * IBM ThinkPads have a simple volume controller with MUTE gating.
- * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
- *
- * Since the *61 series (and probably also the later *60 series), Lenovo
- * ThinkPads only implement the MUTE gate.
- *
- * EC register 0x30
- * Bit 6: MUTE (1 mutes sound)
- * Bit 3-0: Volume
- * Other bits should be zero as far as we know.
- *
- * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
- * bits 3-0 (volume). Other bits in NVRAM may have other functions,
- * such as bit 7 which is used to detect repeated presses of MUTE,
- * and we leave them unchanged.
- *
- * On newer Lenovo ThinkPads, the EC can automatically change the volume
- * in response to user input. Unfortunately, this rarely works well.
- * The laptop changes the state of its internal MUTE gate and, on some
- * models, sends KEY_MUTE, causing any user code that responds to the
- * mute button to get confused. The hardware MUTE gate is also
- * unnecessary, since user code can handle the mute button without
- * kernel or EC help.
- *
- * To avoid confusing userspace, we simply disable all EC-based mute
- * and volume controls when possible.
- */
-
-#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
-
-#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
-#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
-#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
-
-#if SNDRV_CARDS <= 32
-#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
-#else
-#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
-#endif
-static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
-static char *alsa_id = "ThinkPadEC";
-static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
-
-struct tpacpi_alsa_data {
- struct snd_card *card;
- struct snd_ctl_elem_id *ctl_mute_id;
- struct snd_ctl_elem_id *ctl_vol_id;
-};
-
-static struct snd_card *alsa_card;
-
-enum {
- TP_EC_AUDIO = 0x30,
-
- /* TP_EC_AUDIO bits */
- TP_EC_AUDIO_MUTESW = 6,
-
- /* TP_EC_AUDIO bitmasks */
- TP_EC_AUDIO_LVL_MSK = 0x0F,
- TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
-
- /* Maximum volume */
- TP_EC_VOLUME_MAX = 14,
-};
-
-enum tpacpi_volume_access_mode {
- TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
- TPACPI_VOL_MODE_EC, /* Pure EC control */
- TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
- TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
- TPACPI_VOL_MODE_MAX
-};
-
-enum tpacpi_volume_capabilities {
- TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
- TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
- TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
- TPACPI_VOL_CAP_MAX
-};
-
-enum tpacpi_mute_btn_mode {
- TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
- /* We don't know what mode 1 is. */
- TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
- TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
-};
-
-static enum tpacpi_volume_access_mode volume_mode =
- TPACPI_VOL_MODE_MAX;
-
-static enum tpacpi_volume_capabilities volume_capabilities;
-static bool volume_control_allowed;
-static bool software_mute_requested = true;
-static bool software_mute_active;
-static int software_mute_orig_mode;
-
-/*
- * Used to syncronize writers to TP_EC_AUDIO and
- * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
- */
-static struct mutex volume_mutex;
-
-static void tpacpi_volume_checkpoint_nvram(void)
-{
- u8 lec = 0;
- u8 b_nvram;
- u8 ec_mask;
-
- if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
- return;
- if (!volume_control_allowed)
- return;
- if (software_mute_active)
- return;
-
- vdbg_printk(TPACPI_DBG_MIXER,
- "trying to checkpoint mixer state to NVRAM...\n");
-
- if (tp_features.mixer_no_level_control)
- ec_mask = TP_EC_AUDIO_MUTESW_MSK;
- else
- ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
-
- if (mutex_lock_killable(&volume_mutex) < 0)
- return;
-
- if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
- goto unlock;
- lec &= ec_mask;
- b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
-
- if (lec != (b_nvram & ec_mask)) {
- /* NVRAM needs update */
- b_nvram &= ~ec_mask;
- b_nvram |= lec;
- nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
- dbg_printk(TPACPI_DBG_MIXER,
- "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- } else {
- vdbg_printk(TPACPI_DBG_MIXER,
- "NVRAM mixer status already is 0x%02x (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- }
-
-unlock:
- mutex_unlock(&volume_mutex);
-}
-
-static int volume_get_status_ec(u8 *status)
-{
- u8 s;
-
- if (!acpi_ec_read(TP_EC_AUDIO, &s))
- return -EIO;
-
- *status = s;
-
- dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
-
- return 0;
-}
-
-static int volume_get_status(u8 *status)
-{
- return volume_get_status_ec(status);
-}
-
-static int volume_set_status_ec(const u8 status)
-{
- if (!acpi_ec_write(TP_EC_AUDIO, status))
- return -EIO;
-
- dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
-
- /*
- * On X200s, and possibly on others, it can take a while for
- * reads to become correct.
- */
- msleep(1);
-
- return 0;
-}
-
-static int volume_set_status(const u8 status)
-{
- return volume_set_status_ec(status);
-}
-
-/* returns < 0 on error, 0 on no change, 1 on change */
-static int __volume_set_mute_ec(const bool mute)
-{
- int rc;
- u8 s, n;
-
- if (mutex_lock_killable(&volume_mutex) < 0)
- return -EINTR;
-
- rc = volume_get_status_ec(&s);
- if (rc)
- goto unlock;
-
- n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
- s & ~TP_EC_AUDIO_MUTESW_MSK;
-
- if (n != s) {
- rc = volume_set_status_ec(n);
- if (!rc)
- rc = 1;
- }
-
-unlock:
- mutex_unlock(&volume_mutex);
- return rc;
-}
-
-static int volume_alsa_set_mute(const bool mute)
-{
- dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
- (mute) ? "" : "un");
- return __volume_set_mute_ec(mute);
-}
-
-static int volume_set_mute(const bool mute)
-{
- int rc;
-
- dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
- (mute) ? "" : "un");
-
- rc = __volume_set_mute_ec(mute);
- return (rc < 0) ? rc : 0;
-}
-
-/* returns < 0 on error, 0 on no change, 1 on change */
-static int __volume_set_volume_ec(const u8 vol)
-{
- int rc;
- u8 s, n;
-
- if (vol > TP_EC_VOLUME_MAX)
- return -EINVAL;
-
- if (mutex_lock_killable(&volume_mutex) < 0)
- return -EINTR;
-
- rc = volume_get_status_ec(&s);
- if (rc)
- goto unlock;
-
- n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
-
- if (n != s) {
- rc = volume_set_status_ec(n);
- if (!rc)
- rc = 1;
- }
-
-unlock:
- mutex_unlock(&volume_mutex);
- return rc;
-}
-
-static int volume_set_software_mute(bool startup)
-{
- int result;
-
- if (!tpacpi_is_lenovo())
- return -ENODEV;
-
- if (startup) {
- if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
- "HAUM", "qd"))
- return -EIO;
-
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "Initial HAUM setting was %d\n",
- software_mute_orig_mode);
- }
-
- if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
- (int)TP_EC_MUTE_BTN_NONE))
- return -EIO;
-
- if (result != TP_EC_MUTE_BTN_NONE)
- pr_warn("Unexpected SAUM result %d\n",
- result);
-
- /*
- * In software mute mode, the standard codec controls take
- * precendence, so we unmute the ThinkPad HW switch at
- * startup. Just on case there are SAUM-capable ThinkPads
- * with level controls, set max HW volume as well.
- */
- if (tp_features.mixer_no_level_control)
- result = volume_set_mute(false);
- else
- result = volume_set_status(TP_EC_VOLUME_MAX);
-
- if (result != 0)
- pr_warn("Failed to unmute the HW mute switch\n");
-
- return 0;
-}
-
-static void volume_exit_software_mute(void)
-{
- int r;
-
- if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
- || r != software_mute_orig_mode)
- pr_warn("Failed to restore mute mode\n");
-}
-
-static int volume_alsa_set_volume(const u8 vol)
-{
- dbg_printk(TPACPI_DBG_MIXER,
- "ALSA: trying to set volume level to %hu\n", vol);
- return __volume_set_volume_ec(vol);
-}
-
-static void volume_alsa_notify_change(void)
-{
- struct tpacpi_alsa_data *d;
-
- if (alsa_card && alsa_card->private_data) {
- d = alsa_card->private_data;
- if (d->ctl_mute_id)
- snd_ctl_notify(alsa_card,
- SNDRV_CTL_EVENT_MASK_VALUE,
- d->ctl_mute_id);
- if (d->ctl_vol_id)
- snd_ctl_notify(alsa_card,
- SNDRV_CTL_EVENT_MASK_VALUE,
- d->ctl_vol_id);
- }
-}
-
-static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
-{
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = TP_EC_VOLUME_MAX;
- return 0;
-}
-
-static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- u8 s;
- int rc;
-
- rc = volume_get_status(&s);
- if (rc < 0)
- return rc;
-
- ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
- return 0;
-}
-
-static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
- ucontrol->value.integer.value[0]);
- return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
-}
-
-#define volume_alsa_mute_info snd_ctl_boolean_mono_info
-
-static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- u8 s;
- int rc;
-
- rc = volume_get_status(&s);
- if (rc < 0)
- return rc;
-
- ucontrol->value.integer.value[0] =
- (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
- return 0;
-}
-
-static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- tpacpi_disclose_usertask("ALSA", "%smute\n",
- ucontrol->value.integer.value[0] ?
- "un" : "");
- return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
-}
-
-static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Console Playback Volume",
- .index = 0,
- .access = SNDRV_CTL_ELEM_ACCESS_READ,
- .info = volume_alsa_vol_info,
- .get = volume_alsa_vol_get,
-};
-
-static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Console Playback Switch",
- .index = 0,
- .access = SNDRV_CTL_ELEM_ACCESS_READ,
- .info = volume_alsa_mute_info,
- .get = volume_alsa_mute_get,
-};
-
-static void volume_suspend(void)
-{
- tpacpi_volume_checkpoint_nvram();
-}
-
-static void volume_resume(void)
-{
- if (software_mute_active) {
- if (volume_set_software_mute(false) < 0)
- pr_warn("Failed to restore software mute\n");
- } else {
- volume_alsa_notify_change();
- }
-}
-
-static void volume_shutdown(void)
-{
- tpacpi_volume_checkpoint_nvram();
-}
-
-static void volume_exit(void)
-{
- if (alsa_card) {
- snd_card_free(alsa_card);
- alsa_card = NULL;
- }
-
- tpacpi_volume_checkpoint_nvram();
-
- if (software_mute_active)
- volume_exit_software_mute();
-}
-
-static int __init volume_create_alsa_mixer(void)
-{
- struct snd_card *card;
- struct tpacpi_alsa_data *data;
- struct snd_kcontrol *ctl_vol;
- struct snd_kcontrol *ctl_mute;
- int rc;
-
- rc = snd_card_new(&tpacpi_pdev->dev,
- alsa_index, alsa_id, THIS_MODULE,
- sizeof(struct tpacpi_alsa_data), &card);
- if (rc < 0 || !card) {
- pr_err("Failed to create ALSA card structures: %d\n", rc);
- return -ENODEV;
- }
-
- BUG_ON(!card->private_data);
- data = card->private_data;
- data->card = card;
-
- strscpy(card->driver, TPACPI_ALSA_DRVNAME);
- strscpy(card->shortname, TPACPI_ALSA_SHRTNAME);
- snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
- (thinkpad_id.ec_version_str) ?
- thinkpad_id.ec_version_str : "(unknown)");
- snprintf(card->longname, sizeof(card->longname),
- "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
- (thinkpad_id.ec_version_str) ?
- thinkpad_id.ec_version_str : "unknown");
-
- if (volume_control_allowed) {
- volume_alsa_control_vol.put = volume_alsa_vol_put;
- volume_alsa_control_vol.access =
- SNDRV_CTL_ELEM_ACCESS_READWRITE;
-
- volume_alsa_control_mute.put = volume_alsa_mute_put;
- volume_alsa_control_mute.access =
- SNDRV_CTL_ELEM_ACCESS_READWRITE;
- }
-
- if (!tp_features.mixer_no_level_control) {
- ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
- rc = snd_ctl_add(card, ctl_vol);
- if (rc < 0) {
- pr_err("Failed to create ALSA volume control: %d\n",
- rc);
- goto err_exit;
- }
- data->ctl_vol_id = &ctl_vol->id;
- }
-
- ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
- rc = snd_ctl_add(card, ctl_mute);
- if (rc < 0) {
- pr_err("Failed to create ALSA mute control: %d\n", rc);
- goto err_exit;
- }
- data->ctl_mute_id = &ctl_mute->id;
-
- rc = snd_card_register(card);
- if (rc < 0) {
- pr_err("Failed to register ALSA card: %d\n", rc);
- goto err_exit;
- }
-
- alsa_card = card;
- return 0;
-
-err_exit:
- snd_card_free(card);
- return -ENODEV;
-}
-
-#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
-#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
-
-static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
- /* Whitelist volume level on all IBM by default */
- { .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY,
- .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_VOL_Q_LEVEL },
-
- /* Lenovo models with volume control (needs confirmation) */
- TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
- TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
- TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
- TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
- TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
- TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
- TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
-
- /* Whitelist mute-only on all Lenovo by default */
- { .vendor = PCI_VENDOR_ID_LENOVO,
- .bios = TPACPI_MATCH_ANY,
- .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_VOL_Q_MUTEONLY }
-};
-
-static int __init volume_init(struct ibm_init_struct *iibm)
-{
- unsigned long quirks;
- int rc;
-
- vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
-
- mutex_init(&volume_mutex);
-
- /*
- * Check for module parameter bogosity, note that we
- * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
- * able to detect "unspecified"
- */
- if (volume_mode > TPACPI_VOL_MODE_MAX)
- return -EINVAL;
-
- if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
- pr_err("UCMS step volume mode not implemented, please contact %s\n",
- TPACPI_MAIL);
- return -ENODEV;
- }
-
- if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
- return -EINVAL;
-
- /*
- * The ALSA mixer is our primary interface.
- * When disabled, don't install the subdriver at all
- */
- if (!alsa_enable) {
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
- return -ENODEV;
- }
-
- quirks = tpacpi_check_quirks(volume_quirk_table,
- ARRAY_SIZE(volume_quirk_table));
-
- switch (volume_capabilities) {
- case TPACPI_VOL_CAP_AUTO:
- if (quirks & TPACPI_VOL_Q_MUTEONLY)
- tp_features.mixer_no_level_control = 1;
- else if (quirks & TPACPI_VOL_Q_LEVEL)
- tp_features.mixer_no_level_control = 0;
- else
- return -ENODEV; /* no mixer */
- break;
- case TPACPI_VOL_CAP_VOLMUTE:
- tp_features.mixer_no_level_control = 0;
- break;
- case TPACPI_VOL_CAP_MUTEONLY:
- tp_features.mixer_no_level_control = 1;
- break;
- default:
- return -ENODEV;
- }
-
- if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "using user-supplied volume_capabilities=%d\n",
- volume_capabilities);
-
- if (volume_mode == TPACPI_VOL_MODE_AUTO ||
- volume_mode == TPACPI_VOL_MODE_MAX) {
- volume_mode = TPACPI_VOL_MODE_ECNVRAM;
-
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "driver auto-selected volume_mode=%d\n",
- volume_mode);
- } else {
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "using user-supplied volume_mode=%d\n",
- volume_mode);
- }
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "mute is supported, volume control is %s\n",
- str_supported(!tp_features.mixer_no_level_control));
-
- if (software_mute_requested && volume_set_software_mute(true) == 0) {
- software_mute_active = true;
- } else {
- rc = volume_create_alsa_mixer();
- if (rc) {
- pr_err("Could not create the ALSA mixer interface\n");
- return rc;
- }
-
- pr_info("Console audio control enabled, mode: %s\n",
- (volume_control_allowed) ?
- "override (read/write)" :
- "monitor (read only)");
- }
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "registering volume hotkeys as change notification\n");
- tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
- | TP_ACPI_HKEY_VOLUP_MASK
- | TP_ACPI_HKEY_VOLDWN_MASK
- | TP_ACPI_HKEY_MUTE_MASK);
-
- return 0;
-}
-
-static int volume_read(struct seq_file *m)
-{
- u8 status;
-
- if (volume_get_status(&status) < 0) {
- seq_printf(m, "level:\t\tunreadable\n");
- } else {
- if (tp_features.mixer_no_level_control)
- seq_printf(m, "level:\t\tunsupported\n");
- else
- seq_printf(m, "level:\t\t%d\n",
- status & TP_EC_AUDIO_LVL_MSK);
-
- seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW)));
-
- if (volume_control_allowed) {
- seq_printf(m, "commands:\tunmute, mute\n");
- if (!tp_features.mixer_no_level_control) {
- seq_printf(m, "commands:\tup, down\n");
- seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
- TP_EC_VOLUME_MAX);
- }
- }
- }
-
- return 0;
-}
-
-static int volume_write(char *buf)
-{
- u8 s;
- u8 new_level, new_mute;
- int l;
- char *cmd;
- int rc;
-
- /*
- * We do allow volume control at driver startup, so that the
- * user can set initial state through the volume=... parameter hack.
- */
- if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
- if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
- tp_warned.volume_ctrl_forbidden = 1;
- pr_notice("Console audio control in monitor mode, changes are not allowed\n");
- pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
- }
- return -EPERM;
- }
-
- rc = volume_get_status(&s);
- if (rc < 0)
- return rc;
-
- new_level = s & TP_EC_AUDIO_LVL_MSK;
- new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
-
- while ((cmd = strsep(&buf, ","))) {
- if (!tp_features.mixer_no_level_control) {
- if (strstarts(cmd, "up")) {
- if (new_mute)
- new_mute = 0;
- else if (new_level < TP_EC_VOLUME_MAX)
- new_level++;
- continue;
- } else if (strstarts(cmd, "down")) {
- if (new_mute)
- new_mute = 0;
- else if (new_level > 0)
- new_level--;
- continue;
- } else if (sscanf(cmd, "level %u", &l) == 1 &&
- l >= 0 && l <= TP_EC_VOLUME_MAX) {
- new_level = l;
- continue;
- }
- }
- if (strstarts(cmd, "mute"))
- new_mute = TP_EC_AUDIO_MUTESW_MSK;
- else if (strstarts(cmd, "unmute"))
- new_mute = 0;
- else
- return -EINVAL;
- }
-
- if (tp_features.mixer_no_level_control) {
- tpacpi_disclose_usertask("procfs volume", "%smute\n",
- new_mute ? "" : "un");
- rc = volume_set_mute(!!new_mute);
- } else {
- tpacpi_disclose_usertask("procfs volume",
- "%smute and set level to %d\n",
- new_mute ? "" : "un", new_level);
- rc = volume_set_status(new_mute | new_level);
- }
- volume_alsa_notify_change();
-
- return (rc == -EINTR) ? -ERESTARTSYS : rc;
-}
-
-static struct ibm_struct volume_driver_data = {
- .name = "volume",
- .read = volume_read,
- .write = volume_write,
- .exit = volume_exit,
- .suspend = volume_suspend,
- .resume = volume_resume,
- .shutdown = volume_shutdown,
-};
-
-#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
-
-#define alsa_card NULL
-
-static inline void volume_alsa_notify_change(void)
-{
-}
-
-static int __init volume_init(struct ibm_init_struct *iibm)
-{
- pr_info("volume: disabled as there is no ALSA support in this kernel\n");
-
- return -ENODEV;
-}
-
-static struct ibm_struct volume_driver_data = {
- .name = "volume",
-};
-
-#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
-
-/*************************************************************************
- * Fan subdriver
- */
-
-/*
- * FAN ACCESS MODES
- *
- * TPACPI_FAN_RD_ACPI_GFAN:
- * ACPI GFAN method: returns fan level
- *
- * see TPACPI_FAN_WR_ACPI_SFAN
- * EC 0x2f (HFSP) not available if GFAN exists
- *
- * TPACPI_FAN_WR_ACPI_SFAN:
- * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
- *
- * EC 0x2f (HFSP) might be available *for reading*, but do not use
- * it for writing.
- *
- * TPACPI_FAN_RD_ACPI_FANG:
- * ACPI FANG method: returns fan control register
- *
- * Takes one parameter which is 0x8100 plus the offset to EC memory
- * address 0xf500 and returns the byte at this address.
- *
- * 0xf500:
- * When the value is less than 9 automatic mode is enabled
- * 0xf502:
- * Contains the current fan speed from 0-100%
- * 0xf506:
- * Bit 7 has to be set in order to enable manual control by
- * writing a value >= 9 to 0xf500
- *
- * TPACPI_FAN_WR_ACPI_FANW:
- * ACPI FANW method: sets fan control registers
- *
- * Takes 0x8100 plus the offset to EC memory address 0xf500 and the
- * value to be written there as parameters.
- *
- * see TPACPI_FAN_RD_ACPI_FANG
- *
- * TPACPI_FAN_WR_TPEC:
- * ThinkPad EC register 0x2f (HFSP): fan control loop mode
- * Supported on almost all ThinkPads
- *
- * Fan speed changes of any sort (including those caused by the
- * disengaged mode) are usually done slowly by the firmware as the
- * maximum amount of fan duty cycle change per second seems to be
- * limited.
- *
- * Reading is not available if GFAN exists.
- * Writing is not available if SFAN exists.
- *
- * Bits
- * 7 automatic mode engaged;
- * (default operation mode of the ThinkPad)
- * fan level is ignored in this mode.
- * 6 full speed mode (takes precedence over bit 7);
- * not available on all thinkpads. May disable
- * the tachometer while the fan controller ramps up
- * the speed (which can take up to a few *minutes*).
- * Speeds up fan to 100% duty-cycle, which is far above
- * the standard RPM levels. It is not impossible that
- * it could cause hardware damage.
- * 5-3 unused in some models. Extra bits for fan level
- * in others, but still useless as all values above
- * 7 map to the same speed as level 7 in these models.
- * 2-0 fan level (0..7 usually)
- * 0x00 = stop
- * 0x07 = max (set when temperatures critical)
- * Some ThinkPads may have other levels, see
- * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
- *
- * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
- * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
- * does so, its initial value is meaningless (0x07).
- *
- * For firmware bugs, refer to:
- * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
- *
- * ----
- *
- * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
- * Main fan tachometer reading (in RPM)
- *
- * This register is present on all ThinkPads with a new-style EC, and
- * it is known not to be present on the A21m/e, and T22, as there is
- * something else in offset 0x84 according to the ACPI DSDT. Other
- * ThinkPads from this same time period (and earlier) probably lack the
- * tachometer as well.
- *
- * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
- * was never fixed by IBM to report the EC firmware version string
- * probably support the tachometer (like the early X models), so
- * detecting it is quite hard. We need more data to know for sure.
- *
- * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
- * might result.
- *
- * FIRMWARE BUG: may go stale while the EC is switching to full speed
- * mode.
- *
- * For firmware bugs, refer to:
- * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
- *
- * ----
- *
- * ThinkPad EC register 0x31 bit 0 (only on select models)
- *
- * When bit 0 of EC register 0x31 is zero, the tachometer registers
- * show the speed of the main fan. When bit 0 of EC register 0x31
- * is one, the tachometer registers show the speed of the auxiliary
- * fan.
- *
- * Fan control seems to affect both fans, regardless of the state
- * of this bit.
- *
- * So far, only the firmware for the X60/X61 non-tablet versions
- * seem to support this (firmware TP-7M).
- *
- * TPACPI_FAN_WR_ACPI_FANS:
- * ThinkPad X31, X40, X41. Not available in the X60.
- *
- * FANS ACPI handle: takes three arguments: low speed, medium speed,
- * high speed. ACPI DSDT seems to map these three speeds to levels
- * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
- * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
- *
- * The speeds are stored on handles
- * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
- *
- * There are three default speed sets, accessible as handles:
- * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
- *
- * ACPI DSDT switches which set is in use depending on various
- * factors.
- *
- * TPACPI_FAN_WR_TPEC is also available and should be used to
- * command the fan. The X31/X40/X41 seems to have 8 fan levels,
- * but the ACPI tables just mention level 7.
- *
- * TPACPI_FAN_RD_TPEC_NS:
- * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.)
- * that are using non-standard EC locations for reporting fan speeds.
- * Currently these platforms only provide fan rpm reporting.
- *
- */
-
-#define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */
-
-#define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */
-#define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */
-#define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */
-
-enum { /* Fan control constants */
- fan_status_offset = 0x2f, /* EC register 0x2f */
- fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
- * 0x84 must be read before 0x85 */
- fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
- bit 0 selects which fan is active */
-
- fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */
- fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */
- fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */
- fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */
-
- TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
- TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
-
- TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
-};
-
-enum fan_status_access_mode {
- TPACPI_FAN_NONE = 0, /* No fan status or control */
- TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
- TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */
- TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
- TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */
-};
-
-enum fan_control_access_mode {
- TPACPI_FAN_WR_NONE = 0, /* No fan control */
- TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
- TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */
- TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
- TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
-};
-
-enum fan_control_commands {
- TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
- TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
- TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
- * and also watchdog cmd */
-};
-
-static bool fan_control_allowed;
-
-static enum fan_status_access_mode fan_status_access_mode;
-static enum fan_control_access_mode fan_control_access_mode;
-static enum fan_control_commands fan_control_commands;
-
-static u8 fan_control_initial_status;
-static u8 fan_control_desired_level;
-static u8 fan_control_resume_level;
-static int fan_watchdog_maxinterval;
-
-static bool fan_with_ns_addr;
-static bool ecfw_with_fan_dec_rpm;
-static bool fan_speed_in_tpr;
-
-static struct mutex fan_mutex;
-
-static void fan_watchdog_fire(struct work_struct *ignored);
-static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
-
-TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
-TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
- "\\FSPD", /* 600e/x, 770e, 770x */
- ); /* all others */
-TPACPI_HANDLE(fang, ec, "FANG", /* E531 */
- ); /* all others */
-TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
- "JFNS", /* 770x-JL */
- ); /* all others */
-TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */
- ); /* all others */
-
-/*
- * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
- * HFSP register at boot, so it contains 0x07 but the Thinkpad could
- * be in auto mode (0x80).
- *
- * This is corrected by any write to HFSP either by the driver, or
- * by the firmware.
- *
- * We assume 0x07 really means auto mode while this quirk is active,
- * as this is far more likely than the ThinkPad being in level 7,
- * which is only used by the firmware during thermal emergencies.
- *
- * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
- * TP-70 (T43, R52), which are known to be buggy.
- */
-
-static void fan_quirk1_setup(void)
-{
- if (fan_control_initial_status == 0x07) {
- pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
- tp_features.fan_ctrl_status_undef = 1;
- }
-}
-
-static void fan_quirk1_handle(u8 *fan_status)
-{
- if (unlikely(tp_features.fan_ctrl_status_undef)) {
- if (*fan_status != fan_control_initial_status) {
- /* something changed the HFSP regisnter since
- * driver init time, so it is not undefined
- * anymore */
- tp_features.fan_ctrl_status_undef = 0;
- } else {
- /* Return most likely status. In fact, it
- * might be the only possible status */
- *fan_status = TP_EC_FAN_AUTO;
- }
- }
-}
-
-/* Select main fan on X60/X61, NOOP on others */
-static bool fan_select_fan1(void)
-{
- if (tp_features.second_fan) {
- u8 val;
-
- if (ec_read(fan_select_offset, &val) < 0)
- return false;
- val &= 0xFEU;
- if (ec_write(fan_select_offset, val) < 0)
- return false;
- }
- return true;
-}
-
-/* Select secondary fan on X60/X61 */
-static bool fan_select_fan2(void)
-{
- u8 val;
-
- if (!tp_features.second_fan)
- return false;
-
- if (ec_read(fan_select_offset, &val) < 0)
- return false;
- val |= 0x01U;
- if (ec_write(fan_select_offset, val) < 0)
- return false;
-
- return true;
-}
-
-static void fan_update_desired_level(u8 status)
-{
- lockdep_assert_held(&fan_mutex);
-
- if ((status &
- (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
- if (status > 7)
- fan_control_desired_level = 7;
- else
- fan_control_desired_level = status;
- }
-}
-
-static int fan_get_status(u8 *status)
-{
- u8 s;
-
- /* TODO:
- * Add TPACPI_FAN_RD_ACPI_FANS ? */
-
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_ACPI_GFAN: {
- /* 570, 600e/x, 770e, 770x */
- int res;
-
- if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
- return -EIO;
-
- if (likely(status))
- *status = res & 0x07;
-
- break;
- }
- case TPACPI_FAN_RD_ACPI_FANG: {
- /* E531 */
- int mode, speed;
-
- if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100)))
- return -EIO;
- if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102)))
- return -EIO;
-
- if (likely(status)) {
- *status = speed * 7 / 100;
- if (mode < 9)
- *status |= TP_EC_FAN_AUTO;
- }
-
- break;
- }
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
- return -EIO;
-
- if (likely(status)) {
- *status = s;
- fan_quirk1_handle(status);
- }
-
- break;
- case TPACPI_FAN_RD_TPEC_NS:
- /* Default mode is AUTO which means controlled by EC */
- if (!acpi_ec_read(fan_status_offset_ns, &s))
- return -EIO;
-
- if (status)
- *status = s;
-
- break;
-
- default:
- return -ENXIO;
- }
-
- return 0;
-}
-
-static int fan_get_status_safe(u8 *status)
-{
- int rc;
- u8 s;
-
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- rc = fan_get_status(&s);
- /* NS EC doesn't have register with level settings */
- if (!rc && !fan_with_ns_addr)
- fan_update_desired_level(s);
- mutex_unlock(&fan_mutex);
-
- if (rc)
- return rc;
- if (status)
- *status = s;
-
- return 0;
-}
-
-static int fan_get_speed(unsigned int *speed)
-{
- u8 hi, lo;
-
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- if (unlikely(!fan_select_fan1()))
- return -EIO;
- if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
- !acpi_ec_read(fan_rpm_offset + 1, &hi)))
- return -EIO;
-
- if (likely(speed)) {
- *speed = (hi << 8) | lo;
- if (fan_speed_in_tpr && *speed != 0)
- *speed = FAN_CLOCK_TPM / *speed;
- }
- break;
- case TPACPI_FAN_RD_TPEC_NS:
- if (!acpi_ec_read(fan_rpm_status_ns, &lo))
- return -EIO;
-
- if (speed)
- *speed = lo ? FAN_RPM_CAL_CONST / lo : 0;
- break;
-
- default:
- return -ENXIO;
- }
-
- return 0;
-}
-
-static int fan2_get_speed(unsigned int *speed)
-{
- u8 hi, lo, status;
- bool rc;
-
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- if (unlikely(!fan_select_fan2()))
- return -EIO;
- rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
- !acpi_ec_read(fan_rpm_offset + 1, &hi);
- fan_select_fan1(); /* play it safe */
- if (rc)
- return -EIO;
-
- if (likely(speed)) {
- *speed = (hi << 8) | lo;
- if (fan_speed_in_tpr && *speed != 0)
- *speed = FAN_CLOCK_TPM / *speed;
- }
- break;
-
- case TPACPI_FAN_RD_TPEC_NS:
- rc = !acpi_ec_read(fan2_status_offset_ns, &status);
- if (rc)
- return -EIO;
- if (!(status & FAN_NS_CTRL_STATUS)) {
- pr_info("secondary fan control not supported\n");
- return -EIO;
- }
- rc = !acpi_ec_read(fan2_rpm_status_ns, &lo);
- if (rc)
- return -EIO;
- if (speed)
- *speed = lo ? FAN_RPM_CAL_CONST / lo : 0;
- break;
- case TPACPI_FAN_RD_ACPI_FANG: {
- /* E531 */
- int speed_tmp;
-
- if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102)))
- return -EIO;
-
- if (likely(speed))
- *speed = speed_tmp * 65535 / 100;
- break;
- }
-
- default:
- return -ENXIO;
- }
-
- return 0;
-}
-
-static int fan_set_level(int level)
-{
- if (!fan_control_allowed)
- return -EPERM;
-
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_SFAN:
- if ((level < 0) || (level > 7))
- return -EINVAL;
-
- if (tp_features.second_fan_ctl) {
- if (!fan_select_fan2() ||
- !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) {
- pr_warn("Couldn't set 2nd fan level, disabling support\n");
- tp_features.second_fan_ctl = 0;
- }
- fan_select_fan1();
- }
- if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
- return -EIO;
- break;
-
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- if (!(level & TP_EC_FAN_AUTO) &&
- !(level & TP_EC_FAN_FULLSPEED) &&
- ((level < 0) || (level > 7)))
- return -EINVAL;
-
- /* safety net should the EC not support AUTO
- * or FULLSPEED mode bits and just ignore them */
- if (level & TP_EC_FAN_FULLSPEED)
- level |= 7; /* safety min speed 7 */
- else if (level & TP_EC_FAN_AUTO)
- level |= 4; /* safety min speed 4 */
-
- if (tp_features.second_fan_ctl) {
- if (!fan_select_fan2() ||
- !acpi_ec_write(fan_status_offset, level)) {
- pr_warn("Couldn't set 2nd fan level, disabling support\n");
- tp_features.second_fan_ctl = 0;
- }
- fan_select_fan1();
-
- }
- if (!acpi_ec_write(fan_status_offset, level))
- return -EIO;
- else
- tp_features.fan_ctrl_status_undef = 0;
- break;
-
- case TPACPI_FAN_WR_ACPI_FANW:
- if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7))
- return -EINVAL;
- if (level & TP_EC_FAN_FULLSPEED)
- return -EINVAL;
-
- if (level & TP_EC_FAN_AUTO) {
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) {
- return -EIO;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) {
- return -EIO;
- }
- } else {
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
- return -EIO;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
- return -EIO;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) {
- return -EIO;
- }
- }
- break;
-
- default:
- return -ENXIO;
- }
-
- vdbg_printk(TPACPI_DBG_FAN,
- "fan control: set fan control register to 0x%02x\n", level);
- return 0;
-}
-
-static int fan_set_level_safe(int level)
-{
- int rc;
-
- if (!fan_control_allowed)
- return -EPERM;
-
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
-
- if (level == TPACPI_FAN_LAST_LEVEL)
- level = fan_control_desired_level;
-
- rc = fan_set_level(level);
- if (!rc)
- fan_update_desired_level(level);
-
- mutex_unlock(&fan_mutex);
- return rc;
-}
-
-static int fan_set_enable(void)
-{
- u8 s = 0;
- int rc;
-
- if (!fan_control_allowed)
- return -EPERM;
-
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
-
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- rc = fan_get_status(&s);
- if (rc)
- break;
-
- /* Don't go out of emergency fan mode */
- if (s != 7) {
- s &= 0x07;
- s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
- }
-
- if (!acpi_ec_write(fan_status_offset, s))
- rc = -EIO;
- else {
- tp_features.fan_ctrl_status_undef = 0;
- rc = 0;
- }
- break;
-
- case TPACPI_FAN_WR_ACPI_SFAN:
- rc = fan_get_status(&s);
- if (rc)
- break;
-
- s &= 0x07;
-
- /* Set fan to at least level 4 */
- s |= 4;
-
- if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
- rc = -EIO;
- else
- rc = 0;
- break;
-
- case TPACPI_FAN_WR_ACPI_FANW:
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) {
- rc = -EIO;
- break;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) {
- rc = -EIO;
- break;
- }
-
- rc = 0;
- break;
-
- default:
- rc = -ENXIO;
- }
-
- mutex_unlock(&fan_mutex);
-
- if (!rc)
- vdbg_printk(TPACPI_DBG_FAN,
- "fan control: set fan control register to 0x%02x\n",
- s);
- return rc;
-}
-
-static int fan_set_disable(void)
-{
- int rc;
-
- if (!fan_control_allowed)
- return -EPERM;
-
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
-
- rc = 0;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- if (!acpi_ec_write(fan_status_offset, 0x00))
- rc = -EIO;
- else {
- fan_control_desired_level = 0;
- tp_features.fan_ctrl_status_undef = 0;
- }
- break;
-
- case TPACPI_FAN_WR_ACPI_SFAN:
- if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
- rc = -EIO;
- else
- fan_control_desired_level = 0;
- break;
-
- case TPACPI_FAN_WR_ACPI_FANW:
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
- rc = -EIO;
- break;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
- rc = -EIO;
- break;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) {
- rc = -EIO;
- break;
- }
- rc = 0;
- break;
-
- default:
- rc = -ENXIO;
- }
-
- if (!rc)
- vdbg_printk(TPACPI_DBG_FAN,
- "fan control: set fan control register to 0\n");
-
- mutex_unlock(&fan_mutex);
- return rc;
-}
-
-static int fan_set_speed(int speed)
-{
- int rc;
-
- if (!fan_control_allowed)
- return -EPERM;
-
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
-
- rc = 0;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_FANS:
- if (speed >= 0 && speed <= 65535) {
- if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
- speed, speed, speed))
- rc = -EIO;
- } else
- rc = -EINVAL;
- break;
-
- case TPACPI_FAN_WR_ACPI_FANW:
- if (speed >= 0 && speed <= 65535) {
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) {
- rc = -EIO;
- break;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) {
- rc = -EIO;
- break;
- }
- if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd",
- 0x8102, speed * 100 / 65535))
- rc = -EIO;
- } else
- rc = -EINVAL;
- break;
-
- default:
- rc = -ENXIO;
- }
-
- mutex_unlock(&fan_mutex);
- return rc;
-}
-
-static void fan_watchdog_reset(void)
-{
- if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
- return;
-
- if (fan_watchdog_maxinterval > 0 &&
- tpacpi_lifecycle != TPACPI_LIFE_EXITING)
- mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
- secs_to_jiffies(fan_watchdog_maxinterval));
- else
- cancel_delayed_work(&fan_watchdog_task);
-}
-
-static void fan_watchdog_fire(struct work_struct *ignored)
-{
- int rc;
-
- if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
- return;
-
- pr_notice("fan watchdog: enabling fan\n");
- rc = fan_set_enable();
- if (rc < 0) {
- pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
- rc);
- /* reschedule for later */
- fan_watchdog_reset();
- }
-}
-
-/*
- * SYSFS fan layout: hwmon compatible (device)
- *
- * pwm*_enable:
- * 0: "disengaged" mode
- * 1: manual mode
- * 2: native EC "auto" mode (recommended, hardware default)
- *
- * pwm*: set speed in manual mode, ignored otherwise.
- * 0 is level 0; 255 is level 7. Intermediate points done with linear
- * interpolation.
- *
- * fan*_input: tachometer reading, RPM
- *
- *
- * SYSFS fan layout: extensions
- *
- * fan_watchdog (driver):
- * fan watchdog interval in seconds, 0 disables (default), max 120
- */
-
-/* sysfs fan pwm1_enable ----------------------------------------------- */
-static ssize_t fan_pwm1_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res, mode;
- u8 status;
-
- res = fan_get_status_safe(&status);
- if (res)
- return res;
-
- if (status & TP_EC_FAN_FULLSPEED) {
- mode = 0;
- } else if (status & TP_EC_FAN_AUTO) {
- mode = 2;
- } else
- mode = 1;
-
- return sysfs_emit(buf, "%d\n", mode);
-}
-
-static ssize_t fan_pwm1_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long t;
- int res, level;
-
- if (parse_strtoul(buf, 2, &t))
- return -EINVAL;
-
- tpacpi_disclose_usertask("hwmon pwm1_enable",
- "set fan mode to %lu\n", t);
-
- switch (t) {
- case 0:
- level = TP_EC_FAN_FULLSPEED;
- break;
- case 1:
- level = TPACPI_FAN_LAST_LEVEL;
- break;
- case 2:
- level = TP_EC_FAN_AUTO;
- break;
- case 3:
- /* reserved for software-controlled auto mode */
- return -ENOSYS;
- default:
- return -EINVAL;
- }
-
- res = fan_set_level_safe(level);
- if (res == -ENXIO)
- return -EINVAL;
- else if (res < 0)
- return res;
-
- fan_watchdog_reset();
-
- return count;
-}
-
-static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
- fan_pwm1_enable_show, fan_pwm1_enable_store);
-
-/* sysfs fan pwm1 ------------------------------------------------------ */
-static ssize_t fan_pwm1_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res;
- u8 status;
-
- res = fan_get_status_safe(&status);
- if (res)
- return res;
-
- if ((status &
- (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
- status = fan_control_desired_level;
-
- if (status > 7)
- status = 7;
-
- return sysfs_emit(buf, "%u\n", (status * 255) / 7);
-}
-
-static ssize_t fan_pwm1_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long s;
- int rc;
- u8 status, newlevel;
-
- if (parse_strtoul(buf, 255, &s))
- return -EINVAL;
-
- tpacpi_disclose_usertask("hwmon pwm1",
- "set fan speed to %lu\n", s);
-
- /* scale down from 0-255 to 0-7 */
- newlevel = (s >> 5) & 0x07;
-
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
-
- rc = fan_get_status(&status);
- if (!rc && (status &
- (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
- rc = fan_set_level(newlevel);
- if (rc == -ENXIO)
- rc = -EINVAL;
- else if (!rc) {
- fan_update_desired_level(newlevel);
- fan_watchdog_reset();
- }
- }
-
- mutex_unlock(&fan_mutex);
- return (rc) ? rc : count;
-}
-
-static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
-
-/* sysfs fan fan1_input ------------------------------------------------ */
-static ssize_t fan_fan1_input_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res;
- unsigned int speed;
-
- res = fan_get_speed(&speed);
- if (res < 0)
- return res;
-
- /* Check for fan speeds displayed in hexadecimal */
- if (!ecfw_with_fan_dec_rpm)
- return sysfs_emit(buf, "%u\n", speed);
- else
- return sysfs_emit(buf, "%x\n", speed);
-}
-
-static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
-
-/* sysfs fan fan2_input ------------------------------------------------ */
-static ssize_t fan_fan2_input_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int res;
- unsigned int speed;
-
- res = fan2_get_speed(&speed);
- if (res < 0)
- return res;
-
- /* Check for fan speeds displayed in hexadecimal */
- if (!ecfw_with_fan_dec_rpm)
- return sysfs_emit(buf, "%u\n", speed);
- else
- return sysfs_emit(buf, "%x\n", speed);
-}
-
-static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
-
-/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
-static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
-{
- return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval);
-}
-
-static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
- size_t count)
-{
- unsigned long t;
-
- if (parse_strtoul(buf, 120, &t))
- return -EINVAL;
-
- if (!fan_control_allowed)
- return -EPERM;
-
- fan_watchdog_maxinterval = t;
- fan_watchdog_reset();
-
- tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
-
- return count;
-}
-static DRIVER_ATTR_RW(fan_watchdog);
-
-/* --------------------------------------------------------------------- */
-
-static struct attribute *fan_attributes[] = {
- &dev_attr_pwm1_enable.attr,
- &dev_attr_pwm1.attr,
- &dev_attr_fan1_input.attr,
- &dev_attr_fan2_input.attr,
- NULL
-};
-
-static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr,
- int n)
-{
- if (fan_status_access_mode == TPACPI_FAN_NONE &&
- fan_control_access_mode == TPACPI_FAN_WR_NONE)
- return 0;
-
- if (attr == &dev_attr_fan2_input.attr) {
- if (!tp_features.second_fan)
- return 0;
- }
-
- return attr->mode;
-}
-
-static const struct attribute_group fan_attr_group = {
- .is_visible = fan_attr_is_visible,
- .attrs = fan_attributes,
-};
-
-static struct attribute *fan_driver_attributes[] = {
- &driver_attr_fan_watchdog.attr,
- NULL
-};
-
-static const struct attribute_group fan_driver_attr_group = {
- .is_visible = fan_attr_is_visible,
- .attrs = fan_driver_attributes,
-};
-
-#define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */
-#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
-#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */
-#define TPACPI_FAN_NOFAN 0x0008 /* no fan available */
-#define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */
-#define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */
-#define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */
-#define TPACPI_FAN_NOACPI 0x0080 /* Don't use ACPI methods even if detected */
-
-static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
- TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1),
- TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1),
- TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1),
- TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1),
- TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN),
- TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN),
- TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */
- TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */
- TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */
- TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */
- TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */
- TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */
- TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */
- TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */
- TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */
- TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */
- TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */
- TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/
- TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */
- TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */
- TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */
- TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */
- TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */
- TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */
- TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */
- TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */
- TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */
- TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */
- TPACPI_Q_LNV3('R', '0', '0', TPACPI_FAN_NOACPI),/* E560 */
- TPACPI_Q_LNV3('R', '1', '2', TPACPI_FAN_NOACPI),/* T495 */
- TPACPI_Q_LNV3('R', '1', '3', TPACPI_FAN_NOACPI),/* T495s */
-};
-
-static int __init fan_init(struct ibm_init_struct *iibm)
-{
- unsigned long quirks;
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "initializing fan subdriver\n");
-
- mutex_init(&fan_mutex);
- fan_status_access_mode = TPACPI_FAN_NONE;
- fan_control_access_mode = TPACPI_FAN_WR_NONE;
- fan_control_commands = 0;
- fan_watchdog_maxinterval = 0;
- tp_features.fan_ctrl_status_undef = 0;
- tp_features.second_fan = 0;
- tp_features.second_fan_ctl = 0;
- fan_control_desired_level = 7;
-
- if (tpacpi_is_ibm()) {
- TPACPI_ACPIHANDLE_INIT(fans);
- TPACPI_ACPIHANDLE_INIT(gfan);
- TPACPI_ACPIHANDLE_INIT(sfan);
- }
- if (tpacpi_is_lenovo()) {
- TPACPI_ACPIHANDLE_INIT(fang);
- TPACPI_ACPIHANDLE_INIT(fanw);
- }
-
- quirks = tpacpi_check_quirks(fan_quirk_table,
- ARRAY_SIZE(fan_quirk_table));
-
- if (quirks & TPACPI_FAN_NOFAN) {
- pr_info("No integrated ThinkPad fan available\n");
- return -ENODEV;
- }
-
- if (quirks & TPACPI_FAN_NS) {
- pr_info("ECFW with non-standard fan reg control found\n");
- fan_with_ns_addr = 1;
- /* Fan ctrl support from host is undefined for now */
- tp_features.fan_ctrl_status_undef = 1;
- }
-
- /* Check for the EC/BIOS with RPM reported in decimal*/
- if (quirks & TPACPI_FAN_DECRPM) {
- pr_info("ECFW with fan RPM as decimal in EC register\n");
- ecfw_with_fan_dec_rpm = 1;
- tp_features.fan_ctrl_status_undef = 1;
- }
-
- if (quirks & TPACPI_FAN_NOACPI) {
- /* E560, T495, T495s */
- pr_info("Ignoring buggy ACPI fan access method\n");
- fang_handle = NULL;
- fanw_handle = NULL;
- }
-
- if (gfan_handle) {
- /* 570, 600e/x, 770e, 770x */
- fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
- } else if (fang_handle) {
- /* E531 */
- fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG;
- } else {
- /* all other ThinkPads: note that even old-style
- * ThinkPad ECs supports the fan control register */
- if (fan_with_ns_addr ||
- likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) {
- int res;
- unsigned int speed;
-
- fan_status_access_mode = fan_with_ns_addr ?
- TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC;
-
- if (quirks & TPACPI_FAN_Q1)
- fan_quirk1_setup();
- if (quirks & TPACPI_FAN_TPR)
- fan_speed_in_tpr = true;
- /* Try and probe the 2nd fan */
- tp_features.second_fan = 1; /* needed for get_speed to work */
- res = fan2_get_speed(&speed);
- if (res >= 0 && speed != FAN_NOT_PRESENT) {
- /* It responded - so let's assume it's there */
- tp_features.second_fan = 1;
- /* fan control not currently available for ns ECFW */
- tp_features.second_fan_ctl = !fan_with_ns_addr;
- pr_info("secondary fan control detected & enabled\n");
- } else {
- /* Fan not auto-detected */
- tp_features.second_fan = 0;
- if (quirks & TPACPI_FAN_2FAN) {
- tp_features.second_fan = 1;
- pr_info("secondary fan support enabled\n");
- }
- if (quirks & TPACPI_FAN_2CTL) {
- tp_features.second_fan = 1;
- tp_features.second_fan_ctl = 1;
- pr_info("secondary fan control enabled\n");
- }
- }
- } else {
- pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
- return -ENODEV;
- }
- }
-
- if (sfan_handle) {
- /* 570, 770x-JL */
- fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
- fan_control_commands |=
- TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
- } else if (fanw_handle) {
- /* E531 */
- fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW;
- fan_control_commands |=
- TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE;
- } else {
- if (!gfan_handle) {
- /* gfan without sfan means no fan control */
- /* all other models implement TP EC 0x2f control */
-
- if (fans_handle) {
- /* X31, X40, X41 */
- fan_control_access_mode =
- TPACPI_FAN_WR_ACPI_FANS;
- fan_control_commands |=
- TPACPI_FAN_CMD_SPEED |
- TPACPI_FAN_CMD_LEVEL |
- TPACPI_FAN_CMD_ENABLE;
- } else {
- fan_control_access_mode = TPACPI_FAN_WR_TPEC;
- fan_control_commands |=
- TPACPI_FAN_CMD_LEVEL |
- TPACPI_FAN_CMD_ENABLE;
- }
- }
- }
-
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "fan is %s, modes %d, %d\n",
- str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
- fan_control_access_mode != TPACPI_FAN_WR_NONE),
- fan_status_access_mode, fan_control_access_mode);
-
- /* fan control master switch */
- if (!fan_control_allowed) {
- fan_control_access_mode = TPACPI_FAN_WR_NONE;
- fan_control_commands = 0;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "fan control features disabled by parameter\n");
- }
-
- /* update fan_control_desired_level */
- if (fan_status_access_mode != TPACPI_FAN_NONE)
- fan_get_status_safe(NULL);
-
- if (fan_status_access_mode == TPACPI_FAN_NONE &&
- fan_control_access_mode == TPACPI_FAN_WR_NONE)
- return -ENODEV;
-
- return 0;
-}
-
-static void fan_exit(void)
-{
- vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
- "cancelling any pending fan watchdog tasks\n");
-
- cancel_delayed_work(&fan_watchdog_task);
- flush_workqueue(tpacpi_wq);
-}
-
-static void fan_suspend(void)
-{
- int rc;
-
- if (!fan_control_allowed)
- return;
-
- /* Store fan status in cache */
- fan_control_resume_level = 0;
- rc = fan_get_status_safe(&fan_control_resume_level);
- if (rc)
- pr_notice("failed to read fan level for later restore during resume: %d\n",
- rc);
-
- /* if it is undefined, don't attempt to restore it.
- * KEEP THIS LAST */
- if (tp_features.fan_ctrl_status_undef)
- fan_control_resume_level = 0;
-}
-
-static void fan_resume(void)
-{
- u8 current_level = 7;
- bool do_set = false;
- int rc;
-
- /* DSDT *always* updates status on resume */
- tp_features.fan_ctrl_status_undef = 0;
-
- if (!fan_control_allowed ||
- !fan_control_resume_level ||
- fan_get_status_safe(¤t_level))
- return;
-
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_SFAN:
- /* never decrease fan level */
- do_set = (fan_control_resume_level > current_level);
- break;
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- /* never decrease fan level, scale is:
- * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
- *
- * We expect the firmware to set either 7 or AUTO, but we
- * handle FULLSPEED out of paranoia.
- *
- * So, we can safely only restore FULLSPEED or 7, anything
- * else could slow the fan. Restoring AUTO is useless, at
- * best that's exactly what the DSDT already set (it is the
- * slower it uses).
- *
- * Always keep in mind that the DSDT *will* have set the
- * fans to what the vendor supposes is the best level. We
- * muck with it only to speed the fan up.
- */
- if (fan_control_resume_level != 7 &&
- !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
- return;
- else
- do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
- (current_level != fan_control_resume_level);
- break;
- default:
- return;
- }
- if (do_set) {
- pr_notice("restoring fan level to 0x%02x\n",
- fan_control_resume_level);
- rc = fan_set_level_safe(fan_control_resume_level);
- if (rc < 0)
- pr_notice("failed to restore fan level: %d\n", rc);
- }
-}
-
-static int fan_read(struct seq_file *m)
-{
- int rc;
- u8 status;
- unsigned int speed = 0;
-
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_ACPI_GFAN:
- /* 570, 600e/x, 770e, 770x */
- rc = fan_get_status_safe(&status);
- if (rc)
- return rc;
-
- seq_printf(m, "status:\t\t%s\n"
- "level:\t\t%d\n",
- str_enabled_disabled(status), status);
- break;
-
- case TPACPI_FAN_RD_TPEC_NS:
- case TPACPI_FAN_RD_TPEC:
- case TPACPI_FAN_RD_ACPI_FANG:
- /* all except 570, 600e/x, 770e, 770x */
- rc = fan_get_status_safe(&status);
- if (rc)
- return rc;
-
- seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status));
-
- rc = fan_get_speed(&speed);
- if (rc < 0)
- return rc;
-
- /* Check for fan speeds displayed in hexadecimal */
- if (!ecfw_with_fan_dec_rpm)
- seq_printf(m, "speed:\t\t%d\n", speed);
- else
- seq_printf(m, "speed:\t\t%x\n", speed);
-
- if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) {
- /*
- * No full speed bit in NS EC
- * EC Auto mode is set by default.
- * No other levels settings available
- */
- seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto");
- } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) {
- if (status & TP_EC_FAN_FULLSPEED)
- /* Disengaged mode takes precedence */
- seq_printf(m, "level:\t\tdisengaged\n");
- else if (status & TP_EC_FAN_AUTO)
- seq_printf(m, "level:\t\tauto\n");
- else
- seq_printf(m, "level:\t\t%d\n", status);
- }
- break;
-
- case TPACPI_FAN_NONE:
- default:
- seq_printf(m, "status:\t\tnot supported\n");
- }
-
- if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
- seq_printf(m, "commands:\tlevel <level>");
-
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_SFAN:
- seq_printf(m, " (<level> is 0-7)\n");
- break;
-
- default:
- seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
- break;
- }
- }
-
- if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
- seq_printf(m, "commands:\tenable, disable\n"
- "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
-
- if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
- seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
-
- return 0;
-}
-
-static int fan_write_cmd_level(const char *cmd, int *rc)
-{
- int level;
-
- if (strstarts(cmd, "level auto"))
- level = TP_EC_FAN_AUTO;
- else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed"))
- level = TP_EC_FAN_FULLSPEED;
- else if (sscanf(cmd, "level %d", &level) != 1)
- return 0;
-
- *rc = fan_set_level_safe(level);
- if (*rc == -ENXIO)
- pr_err("level command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan",
- "set level to %d\n", level);
-
- return 1;
-}
-
-static int fan_write_cmd_enable(const char *cmd, int *rc)
-{
- if (!strstarts(cmd, "enable"))
- return 0;
-
- *rc = fan_set_enable();
- if (*rc == -ENXIO)
- pr_err("enable command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan", "enable\n");
-
- return 1;
-}
-
-static int fan_write_cmd_disable(const char *cmd, int *rc)
-{
- if (!strstarts(cmd, "disable"))
- return 0;
-
- *rc = fan_set_disable();
- if (*rc == -ENXIO)
- pr_err("disable command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan", "disable\n");
-
- return 1;
-}
-
-static int fan_write_cmd_speed(const char *cmd, int *rc)
-{
- int speed;
-
- /* TODO:
- * Support speed <low> <medium> <high> ? */
-
- if (sscanf(cmd, "speed %d", &speed) != 1)
- return 0;
-
- *rc = fan_set_speed(speed);
- if (*rc == -ENXIO)
- pr_err("speed command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan",
- "set speed to %d\n", speed);
-
- return 1;
-}
-
-static int fan_write_cmd_watchdog(const char *cmd, int *rc)
-{
- int interval;
-
- if (sscanf(cmd, "watchdog %d", &interval) != 1)
- return 0;
-
- if (interval < 0 || interval > 120)
- *rc = -EINVAL;
- else {
- fan_watchdog_maxinterval = interval;
- tpacpi_disclose_usertask("procfs fan",
- "set watchdog timer to %d\n",
- interval);
- }
-
- return 1;
-}
-
-static int fan_write(char *buf)
-{
- char *cmd;
- int rc = 0;
-
- while (!rc && (cmd = strsep(&buf, ","))) {
- if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
- fan_write_cmd_level(cmd, &rc)) &&
- !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
- (fan_write_cmd_enable(cmd, &rc) ||
- fan_write_cmd_disable(cmd, &rc) ||
- fan_write_cmd_watchdog(cmd, &rc))) &&
- !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
- fan_write_cmd_speed(cmd, &rc))
- )
- rc = -EINVAL;
- else if (!rc)
- fan_watchdog_reset();
- }
-
- return rc;
-}
-
-static struct ibm_struct fan_driver_data = {
- .name = "fan",
- .read = fan_read,
- .write = fan_write,
- .exit = fan_exit,
- .suspend = fan_suspend,
- .resume = fan_resume,
-};
-
-/*************************************************************************
- * Mute LED subdriver
- */
-
-#define TPACPI_LED_MAX 2
-
-struct tp_led_table {
- acpi_string name;
- int on_value;
- int off_value;
- int state;
-};
-
-static struct tp_led_table led_tables[TPACPI_LED_MAX] = {
- [LED_AUDIO_MUTE] = {
- .name = "SSMS",
- .on_value = 1,
- .off_value = 0,
- },
- [LED_AUDIO_MICMUTE] = {
- .name = "MMTS",
- .on_value = 2,
- .off_value = 0,
- },
-};
-
-static int mute_led_on_off(struct tp_led_table *t, bool state)
-{
- acpi_handle temp;
- int output;
-
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
- pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
- return -EIO;
- }
-
- if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
- state ? t->on_value : t->off_value))
- return -EIO;
-
- t->state = state;
- return state;
-}
-
-static int tpacpi_led_set(int whichled, bool on)
-{
- struct tp_led_table *t;
-
- t = &led_tables[whichled];
- if (t->state < 0 || t->state == on)
- return t->state;
- return mute_led_on_off(t, on);
-}
-
-static int tpacpi_led_mute_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF);
-}
-
-static int tpacpi_led_micmute_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
-{
- return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF);
-}
-
-static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = {
- [LED_AUDIO_MUTE] = {
- .name = "platform::mute",
- .max_brightness = 1,
- .brightness_set_blocking = tpacpi_led_mute_set,
- .default_trigger = "audio-mute",
- },
- [LED_AUDIO_MICMUTE] = {
- .name = "platform::micmute",
- .max_brightness = 1,
- .brightness_set_blocking = tpacpi_led_micmute_set,
- .default_trigger = "audio-micmute",
- },
-};
-
-static int mute_led_init(struct ibm_init_struct *iibm)
-{
- acpi_handle temp;
- int i, err;
-
- for (i = 0; i < TPACPI_LED_MAX; i++) {
- struct tp_led_table *t = &led_tables[i];
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
- t->state = -ENODEV;
- continue;
- }
-
- err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]);
- if (err < 0) {
- while (i--)
- led_classdev_unregister(&mute_led_cdev[i]);
- return err;
- }
- }
- return 0;
-}
-
-static void mute_led_exit(void)
-{
- int i;
-
- for (i = 0; i < TPACPI_LED_MAX; i++) {
- led_classdev_unregister(&mute_led_cdev[i]);
- tpacpi_led_set(i, false);
- }
-}
-
-static void mute_led_resume(void)
-{
- int i;
-
- for (i = 0; i < TPACPI_LED_MAX; i++) {
- struct tp_led_table *t = &led_tables[i];
- if (t->state >= 0)
- mute_led_on_off(t, t->state);
- }
-}
-
-static struct ibm_struct mute_led_driver_data = {
- .name = "mute_led",
- .exit = mute_led_exit,
- .resume = mute_led_resume,
-};
-
-/*
- * Battery Wear Control Driver
- * Contact: Ognjen Galic <smclt30p@gmail.com>
- */
-
-/* Metadata */
-
-#define GET_START "BCTG"
-#define SET_START "BCCS"
-#define GET_STOP "BCSG"
-#define SET_STOP "BCSS"
-#define GET_DISCHARGE "BDSG"
-#define SET_DISCHARGE "BDSS"
-#define GET_INHIBIT "BICG"
-#define SET_INHIBIT "BICS"
-
-enum {
- BAT_ANY = 0,
- BAT_PRIMARY = 1,
- BAT_SECONDARY = 2
-};
-
-enum {
- /* Error condition bit */
- METHOD_ERR = BIT(31),
-};
-
-enum {
- /* This is used in the get/set helpers */
- THRESHOLD_START,
- THRESHOLD_STOP,
- FORCE_DISCHARGE,
- INHIBIT_CHARGE,
-};
-
-struct tpacpi_battery_data {
- int charge_start;
- int start_support;
- int charge_stop;
- int stop_support;
- unsigned int charge_behaviours;
-};
-
-struct tpacpi_battery_driver_data {
- struct tpacpi_battery_data batteries[3];
- int individual_addressing;
-};
-
-static struct tpacpi_battery_driver_data battery_info;
-
-/* ACPI helpers/functions/probes */
-
-/*
- * This evaluates a ACPI method call specific to the battery
- * ACPI extension. The specifics are that an error is marked
- * in the 32rd bit of the response, so we just check that here.
- */
-static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
-{
- int response;
-
- if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
- acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
- return AE_ERROR;
- }
- if (response & METHOD_ERR) {
- acpi_handle_err(hkey_handle,
- "%s evaluated but flagged as error", method);
- return AE_ERROR;
- }
- *ret = response;
- return AE_OK;
-}
-
-static int tpacpi_battery_get(int what, int battery, int *ret)
-{
- switch (what) {
- case THRESHOLD_START:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
- return -ENODEV;
-
- /* The value is in the low 8 bits of the response */
- *ret = *ret & 0xFF;
- return 0;
- case THRESHOLD_STOP:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
- return -ENODEV;
- /* Value is in lower 8 bits */
- *ret = *ret & 0xFF;
- /*
- * On the stop value, if we return 0 that
- * does not make any sense. 0 means Default, which
- * means that charging stops at 100%, so we return
- * that.
- */
- if (*ret == 0)
- *ret = 100;
- return 0;
- case FORCE_DISCHARGE:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery))
- return -ENODEV;
- /* The force discharge status is in bit 0 */
- *ret = *ret & 0x01;
- return 0;
- case INHIBIT_CHARGE:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery))
- return -ENODEV;
- /* The inhibit charge status is in bit 0 */
- *ret = *ret & 0x01;
- return 0;
- default:
- pr_crit("wrong parameter: %d", what);
- return -EINVAL;
- }
-}
-
-static int tpacpi_battery_set(int what, int battery, int value)
-{
- int param, ret;
- /* The first 8 bits are the value of the threshold */
- param = value;
- /* The battery ID is in bits 8-9, 2 bits */
- param |= battery << 8;
-
- switch (what) {
- case THRESHOLD_START:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
- pr_err("failed to set charge threshold on battery %d",
- battery);
- return -ENODEV;
- }
- return 0;
- case THRESHOLD_STOP:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
- pr_err("failed to set stop threshold: %d", battery);
- return -ENODEV;
- }
- return 0;
- case FORCE_DISCHARGE:
- /* Force discharge is in bit 0,
- * break on AC attach is in bit 1 (won't work on some ThinkPads),
- * battery ID is in bits 8-9, 2 bits.
- */
- if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) {
- pr_err("failed to set force discharge on %d", battery);
- return -ENODEV;
- }
- return 0;
- case INHIBIT_CHARGE:
- /* When setting inhibit charge, we set a default value of
- * always breaking on AC detach and the effective time is set to
- * be permanent.
- * The battery ID is in bits 4-5, 2 bits,
- * the effective time is in bits 8-23, 2 bytes.
- * A time of FFFF indicates forever.
- */
- param = value;
- param |= battery << 4;
- param |= 0xFFFF << 8;
- if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) {
- pr_err("failed to set inhibit charge on %d", battery);
- return -ENODEV;
- }
- return 0;
- default:
- pr_crit("wrong parameter: %d", what);
- return -EINVAL;
- }
-}
-
-static int tpacpi_battery_set_validate(int what, int battery, int value)
-{
- int ret, v;
-
- ret = tpacpi_battery_set(what, battery, value);
- if (ret < 0)
- return ret;
-
- ret = tpacpi_battery_get(what, battery, &v);
- if (ret < 0)
- return ret;
-
- if (v == value)
- return 0;
-
- msleep(500);
-
- ret = tpacpi_battery_get(what, battery, &v);
- if (ret < 0)
- return ret;
-
- if (v == value)
- return 0;
-
- return -EIO;
-}
-
-static int tpacpi_battery_probe(int battery)
-{
- int ret = 0;
-
- memset(&battery_info.batteries[battery], 0,
- sizeof(battery_info.batteries[battery]));
-
- /*
- * 1) Get the current start threshold
- * 2) Check for support
- * 3) Get the current stop threshold
- * 4) Check for support
- * 5) Get the current force discharge status
- * 6) Check for support
- * 7) Get the current inhibit charge status
- * 8) Check for support
- */
- if (acpi_has_method(hkey_handle, GET_START)) {
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
- pr_err("Error probing battery %d\n", battery);
- return -ENODEV;
- }
- /* Individual addressing is in bit 9 */
- if (ret & BIT(9))
- battery_info.individual_addressing = true;
- /* Support is marked in bit 8 */
- if (ret & BIT(8))
- battery_info.batteries[battery].start_support = 1;
- else
- return -ENODEV;
- if (tpacpi_battery_get(THRESHOLD_START, battery,
- &battery_info.batteries[battery].charge_start)) {
- pr_err("Error probing battery %d\n", battery);
- return -ENODEV;
- }
- }
- if (acpi_has_method(hkey_handle, GET_STOP)) {
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
- pr_err("Error probing battery stop; %d\n", battery);
- return -ENODEV;
- }
- /* Support is marked in bit 8 */
- if (ret & BIT(8))
- battery_info.batteries[battery].stop_support = 1;
- else
- return -ENODEV;
- if (tpacpi_battery_get(THRESHOLD_STOP, battery,
- &battery_info.batteries[battery].charge_stop)) {
- pr_err("Error probing battery stop: %d\n", battery);
- return -ENODEV;
- }
- }
- if (acpi_has_method(hkey_handle, GET_DISCHARGE)) {
- if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) {
- pr_err("Error probing battery discharge; %d\n", battery);
- return -ENODEV;
- }
- /* Support is marked in bit 8 */
- if (ret & BIT(8))
- battery_info.batteries[battery].charge_behaviours |=
- BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE);
- }
- if (acpi_has_method(hkey_handle, GET_INHIBIT)) {
- if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) {
- pr_err("Error probing battery inhibit charge; %d\n", battery);
- return -ENODEV;
- }
- /* Support is marked in bit 5 */
- if (ret & BIT(5))
- battery_info.batteries[battery].charge_behaviours |=
- BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE);
- }
-
- battery_info.batteries[battery].charge_behaviours |=
- BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO);
-
- pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n",
- battery,
- battery_info.batteries[battery].charge_start,
- battery_info.batteries[battery].charge_stop,
- battery_info.batteries[battery].charge_behaviours);
-
- return 0;
-}
-
-/* General helper functions */
-
-static int tpacpi_battery_get_id(const char *battery_name)
-{
-
- if (strcmp(battery_name, "BAT0") == 0 ||
- tp_features.battery_force_primary)
- return BAT_PRIMARY;
- if (strcmp(battery_name, "BAT1") == 0)
- return BAT_SECONDARY;
- /*
- * If for some reason the battery is not BAT0 nor is it
- * BAT1, we will assume it's the default, first battery,
- * AKA primary.
- */
- pr_warn("unknown battery %s, assuming primary", battery_name);
- return BAT_PRIMARY;
-}
-
-/* sysfs interface */
-
-static ssize_t tpacpi_battery_store(int what,
- struct device *dev,
- const char *buf, size_t count)
-{
- struct power_supply *supply = to_power_supply(dev);
- unsigned long value;
- int battery, rval;
- /*
- * Some systems have support for more than
- * one battery. If that is the case,
- * tpacpi_battery_probe marked that addressing
- * them individually is supported, so we do that
- * based on the device struct.
- *
- * On systems that are not supported, we assume
- * the primary as most of the ACPI calls fail
- * with "Any Battery" as the parameter.
- */
- if (battery_info.individual_addressing)
- /* BAT_PRIMARY or BAT_SECONDARY */
- battery = tpacpi_battery_get_id(supply->desc->name);
- else
- battery = BAT_PRIMARY;
-
- rval = kstrtoul(buf, 10, &value);
- if (rval)
- return rval;
-
- switch (what) {
- case THRESHOLD_START:
- if (!battery_info.batteries[battery].start_support)
- return -ENODEV;
- /* valid values are [0, 99] */
- if (value > 99)
- return -EINVAL;
- if (value > battery_info.batteries[battery].charge_stop)
- return -EINVAL;
- if (tpacpi_battery_set(THRESHOLD_START, battery, value))
- return -ENODEV;
- battery_info.batteries[battery].charge_start = value;
- return count;
-
- case THRESHOLD_STOP:
- if (!battery_info.batteries[battery].stop_support)
- return -ENODEV;
- /* valid values are [1, 100] */
- if (value < 1 || value > 100)
- return -EINVAL;
- if (value < battery_info.batteries[battery].charge_start)
- return -EINVAL;
- battery_info.batteries[battery].charge_stop = value;
- /*
- * When 100 is passed to stop, we need to flip
- * it to 0 as that the EC understands that as
- * "Default", which will charge to 100%
- */
- if (value == 100)
- value = 0;
- if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
- return -EINVAL;
- return count;
- default:
- pr_crit("Wrong parameter: %d", what);
- return -EINVAL;
- }
- return count;
-}
-
-static ssize_t tpacpi_battery_show(int what,
- struct device *dev,
- char *buf)
-{
- struct power_supply *supply = to_power_supply(dev);
- int ret, battery;
- /*
- * Some systems have support for more than
- * one battery. If that is the case,
- * tpacpi_battery_probe marked that addressing
- * them individually is supported, so we;
- * based on the device struct.
- *
- * On systems that are not supported, we assume
- * the primary as most of the ACPI calls fail
- * with "Any Battery" as the parameter.
- */
- if (battery_info.individual_addressing)
- /* BAT_PRIMARY or BAT_SECONDARY */
- battery = tpacpi_battery_get_id(supply->desc->name);
- else
- battery = BAT_PRIMARY;
- if (tpacpi_battery_get(what, battery, &ret))
- return -ENODEV;
- return sysfs_emit(buf, "%d\n", ret);
-}
-
-static ssize_t charge_control_start_threshold_show(struct device *device,
- struct device_attribute *attr,
- char *buf)
-{
- return tpacpi_battery_show(THRESHOLD_START, device, buf);
-}
-
-static ssize_t charge_control_end_threshold_show(struct device *device,
- struct device_attribute *attr,
- char *buf)
-{
- return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
-}
-
-static ssize_t charge_behaviour_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
- struct power_supply *supply = to_power_supply(dev);
- unsigned int available;
- int ret, battery;
-
- battery = tpacpi_battery_get_id(supply->desc->name);
- available = battery_info.batteries[battery].charge_behaviours;
-
- if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) {
- if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret))
- return -ENODEV;
- if (ret) {
- active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE;
- goto out;
- }
- }
-
- if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) {
- if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret))
- return -ENODEV;
- if (ret) {
- active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
- goto out;
- }
- }
-
-out:
- return power_supply_charge_behaviour_show(dev, available, active, buf);
-}
-
-static ssize_t charge_control_start_threshold_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
-}
-
-static ssize_t charge_control_end_threshold_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
-}
-
-static ssize_t charge_behaviour_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct power_supply *supply = to_power_supply(dev);
- int selected, battery, ret = 0;
- unsigned int available;
-
- battery = tpacpi_battery_get_id(supply->desc->name);
- available = battery_info.batteries[battery].charge_behaviours;
- selected = power_supply_charge_behaviour_parse(available, buf);
-
- if (selected < 0)
- return selected;
-
- switch (selected) {
- case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
- if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
- ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
- if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
- ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0));
- if (ret < 0)
- return ret;
- break;
- case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE:
- if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE))
- ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0);
- ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1));
- if (ret < 0)
- return ret;
- break;
- case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
- if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE))
- ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0);
- ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1));
- if (ret < 0)
- return ret;
- break;
- default:
- dev_err(dev, "Unexpected charge behaviour: %d\n", selected);
- return -EINVAL;
- }
-
- return count;
-}
-
-static DEVICE_ATTR_RW(charge_control_start_threshold);
-static DEVICE_ATTR_RW(charge_control_end_threshold);
-static DEVICE_ATTR_RW(charge_behaviour);
-static struct device_attribute dev_attr_charge_start_threshold = __ATTR(
- charge_start_threshold,
- 0644,
- charge_control_start_threshold_show,
- charge_control_start_threshold_store
-);
-static struct device_attribute dev_attr_charge_stop_threshold = __ATTR(
- charge_stop_threshold,
- 0644,
- charge_control_end_threshold_show,
- charge_control_end_threshold_store
-);
-
-static struct attribute *tpacpi_battery_attrs[] = {
- &dev_attr_charge_control_start_threshold.attr,
- &dev_attr_charge_control_end_threshold.attr,
- &dev_attr_charge_start_threshold.attr,
- &dev_attr_charge_stop_threshold.attr,
- &dev_attr_charge_behaviour.attr,
- NULL,
-};
-
-ATTRIBUTE_GROUPS(tpacpi_battery);
-
-/* ACPI battery hooking */
-
-static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
-{
- int batteryid = tpacpi_battery_get_id(battery->desc->name);
-
- if (tpacpi_battery_probe(batteryid))
- return -ENODEV;
- if (device_add_groups(&battery->dev, tpacpi_battery_groups))
- return -ENODEV;
- return 0;
-}
-
-static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
-{
- device_remove_groups(&battery->dev, tpacpi_battery_groups);
- return 0;
-}
-
-static struct acpi_battery_hook battery_hook = {
- .add_battery = tpacpi_battery_add,
- .remove_battery = tpacpi_battery_remove,
- .name = "ThinkPad Battery Extension",
-};
-
-/* Subdriver init/exit */
-
-static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
- /*
- * Individual addressing is broken on models that expose the
- * primary battery as BAT1.
- */
- TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */
- TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */
- TPACPI_Q_LNV('J', '7', true), /* B5400 */
- TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */
- TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
- TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
- TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
- TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
-};
-
-static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
-{
- memset(&battery_info, 0, sizeof(battery_info));
-
- tp_features.battery_force_primary = tpacpi_check_quirks(
- battery_quirk_table,
- ARRAY_SIZE(battery_quirk_table));
-
- battery_hook_register(&battery_hook);
- return 0;
-}
-
-static void tpacpi_battery_exit(void)
-{
- battery_hook_unregister(&battery_hook);
-}
-
-static struct ibm_struct battery_driver_data = {
- .name = "battery",
- .exit = tpacpi_battery_exit,
-};
-
-/*************************************************************************
- * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature
- */
-
-static struct drm_privacy_screen *lcdshadow_dev;
-static acpi_handle lcdshadow_get_handle;
-static acpi_handle lcdshadow_set_handle;
-
-static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv,
- enum drm_privacy_screen_status state)
-{
- int output;
-
- if (WARN_ON(!mutex_is_locked(&priv->lock)))
- return -EIO;
-
- if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state))
- return -EIO;
-
- priv->hw_state = priv->sw_state = state;
- return 0;
-}
-
-static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv)
-{
- int output;
-
- if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
- return;
-
- priv->hw_state = priv->sw_state = output & 0x1;
-}
-
-static const struct drm_privacy_screen_ops lcdshadow_ops = {
- .set_sw_state = lcdshadow_set_sw_state,
- .get_hw_state = lcdshadow_get_hw_state,
-};
-
-static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm)
-{
- acpi_status status1, status2;
- int output;
-
- status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle);
- status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle);
- if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2))
- return 0;
-
- if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0))
- return -EIO;
-
- if (!(output & 0x10000))
- return 0;
-
- lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev,
- &lcdshadow_ops, NULL);
- if (IS_ERR(lcdshadow_dev))
- return PTR_ERR(lcdshadow_dev);
-
- return 0;
-}
-
-static void lcdshadow_exit(void)
-{
- drm_privacy_screen_unregister(lcdshadow_dev);
-}
-
-static void lcdshadow_resume(void)
-{
- if (!lcdshadow_dev)
- return;
-
- mutex_lock(&lcdshadow_dev->lock);
- lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state);
- mutex_unlock(&lcdshadow_dev->lock);
-}
-
-static int lcdshadow_read(struct seq_file *m)
-{
- if (!lcdshadow_dev) {
- seq_puts(m, "status:\t\tnot supported\n");
- } else {
- seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state);
- seq_puts(m, "commands:\t0, 1\n");
- }
-
- return 0;
-}
-
-static int lcdshadow_write(char *buf)
-{
- char *cmd;
- int res, state = -EINVAL;
-
- if (!lcdshadow_dev)
- return -ENODEV;
-
- while ((cmd = strsep(&buf, ","))) {
- res = kstrtoint(cmd, 10, &state);
- if (res < 0)
- return res;
- }
-
- if (state >= 2 || state < 0)
- return -EINVAL;
-
- mutex_lock(&lcdshadow_dev->lock);
- res = lcdshadow_set_sw_state(lcdshadow_dev, state);
- mutex_unlock(&lcdshadow_dev->lock);
-
- drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
-
- return res;
-}
-
-static struct ibm_struct lcdshadow_driver_data = {
- .name = "lcdshadow",
- .exit = lcdshadow_exit,
- .resume = lcdshadow_resume,
- .read = lcdshadow_read,
- .write = lcdshadow_write,
-};
-
-/*************************************************************************
- * Thinkpad sensor interfaces
- */
-
-#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
-#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
-#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
-#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
-
-#define DYTC_CMD_GET 2 /* To get current IC function and mode */
-#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */
-
-#define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */
-#define PALMSENSOR_ON_BIT 1 /* psensor status */
-
-static bool has_palmsensor;
-static bool has_lapsensor;
-static bool palm_state;
-static bool lap_state;
-static int dytc_version;
-
-static int dytc_command(int command, int *output)
-{
- acpi_handle dytc_handle;
-
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) {
- /* Platform doesn't support DYTC */
- return -ENODEV;
- }
- if (!acpi_evalf(dytc_handle, output, NULL, "dd", command))
- return -EIO;
- return 0;
-}
-
-static int lapsensor_get(bool *present, bool *state)
-{
- int output, err;
-
- *present = false;
- err = dytc_command(DYTC_CMD_GET, &output);
- if (err)
- return err;
-
- *present = true; /*If we get his far, we have lapmode support*/
- *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false;
- return 0;
-}
-
-static int palmsensor_get(bool *present, bool *state)
-{
- acpi_handle psensor_handle;
- int output;
-
- *present = false;
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle)))
- return -ENODEV;
- if (!acpi_evalf(psensor_handle, &output, NULL, "d"))
- return -EIO;
-
- *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false;
- *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false;
- return 0;
-}
-
-static void lapsensor_refresh(void)
-{
- bool state;
- int err;
-
- if (has_lapsensor) {
- err = lapsensor_get(&has_lapsensor, &state);
- if (err)
- return;
- if (lap_state != state) {
- lap_state = state;
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode");
- }
- }
-}
-
-static void palmsensor_refresh(void)
-{
- bool state;
- int err;
-
- if (has_palmsensor) {
- err = palmsensor_get(&has_palmsensor, &state);
- if (err)
- return;
- if (palm_state != state) {
- palm_state = state;
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor");
- }
- }
-}
-
-static ssize_t dytc_lapmode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- if (has_lapsensor)
- return sysfs_emit(buf, "%d\n", lap_state);
- return sysfs_emit(buf, "\n");
-}
-static DEVICE_ATTR_RO(dytc_lapmode);
-
-static ssize_t palmsensor_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- if (has_palmsensor)
- return sysfs_emit(buf, "%d\n", palm_state);
- return sysfs_emit(buf, "\n");
-}
-static DEVICE_ATTR_RO(palmsensor);
-
-static struct attribute *proxsensor_attributes[] = {
- &dev_attr_dytc_lapmode.attr,
- &dev_attr_palmsensor.attr,
- NULL
-};
-
-static umode_t proxsensor_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- if (attr == &dev_attr_dytc_lapmode.attr) {
- /*
- * Platforms before DYTC version 5 claim to have a lap sensor,
- * but it doesn't work, so we ignore them.
- */
- if (!has_lapsensor || dytc_version < 5)
- return 0;
- } else if (attr == &dev_attr_palmsensor.attr) {
- if (!has_palmsensor)
- return 0;
- }
-
- return attr->mode;
-}
-
-static const struct attribute_group proxsensor_attr_group = {
- .is_visible = proxsensor_attr_is_visible,
- .attrs = proxsensor_attributes,
-};
-
-static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm)
-{
- int palm_err, lap_err;
-
- palm_err = palmsensor_get(&has_palmsensor, &palm_state);
- lap_err = lapsensor_get(&has_lapsensor, &lap_state);
- /* If support isn't available for both devices return -ENODEV */
- if ((palm_err == -ENODEV) && (lap_err == -ENODEV))
- return -ENODEV;
- /* Otherwise, if there was an error return it */
- if (palm_err && (palm_err != -ENODEV))
- return palm_err;
- if (lap_err && (lap_err != -ENODEV))
- return lap_err;
-
- return 0;
-}
-
-static struct ibm_struct proxsensor_driver_data = {
- .name = "proximity-sensor",
-};
-
-/*************************************************************************
- * DYTC Platform Profile interface
- */
-
-#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
-#define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */
-#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
-
-#define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */
-#define DYTC_FC_MMC 27 /* MMC Mode supported */
-#define DYTC_FC_PSC 29 /* PSC Mode supported */
-#define DYTC_FC_AMT 31 /* AMT mode supported */
-
-#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
-#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
-
-#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
-#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
-#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
-
-#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
-#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
-#define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */
-#define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */
-#define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */
-
-#define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */
-#define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */
-
-#define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */
-#define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */
-#define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */
-#define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */
-
-#define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */
-#define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */
-#define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */
-
-#define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */
-#define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */
-#define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */
-
-#define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */
-#define DYTC_ERR_SUCCESS 1 /* CMD completed successful */
-
-#define DYTC_SET_COMMAND(function, mode, on) \
- (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
- (mode) << DYTC_SET_MODE_BIT | \
- (on) << DYTC_SET_VALID_BIT)
-
-#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0)
-#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1)
-static int dytc_control_amt(bool enable);
-static bool dytc_amt_active;
-
-static enum platform_profile_option dytc_current_profile;
-static atomic_t dytc_ignore_event = ATOMIC_INIT(0);
-static DEFINE_MUTEX(dytc_mutex);
-static int dytc_capabilities;
-static bool dytc_mmc_get_available;
-static int profile_force;
-
-static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER;
-static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE;
-static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM;
-
-static int convert_dytc_to_profile(int funcmode, int dytcmode,
- enum platform_profile_option *profile)
-{
- switch (funcmode) {
- case DYTC_FUNCTION_MMC:
- switch (dytcmode) {
- case DYTC_MODE_MMC_LOWPOWER:
- *profile = PLATFORM_PROFILE_LOW_POWER;
- break;
- case DYTC_MODE_MMC_DEFAULT:
- case DYTC_MODE_MMC_BALANCE:
- *profile = PLATFORM_PROFILE_BALANCED;
- break;
- case DYTC_MODE_MMC_PERFORM:
- *profile = PLATFORM_PROFILE_PERFORMANCE;
- break;
- default: /* Unknown mode */
- return -EINVAL;
- }
- return 0;
- case DYTC_FUNCTION_PSC:
- if (dytcmode == platform_psc_profile_lowpower)
- *profile = PLATFORM_PROFILE_LOW_POWER;
- else if (dytcmode == platform_psc_profile_balanced)
- *profile = PLATFORM_PROFILE_BALANCED;
- else if (dytcmode == platform_psc_profile_performance)
- *profile = PLATFORM_PROFILE_PERFORMANCE;
- else
- return -EINVAL;
-
- return 0;
- case DYTC_FUNCTION_AMT:
- /* For now return balanced. It's the closest we have to 'auto' */
- *profile = PLATFORM_PROFILE_BALANCED;
- return 0;
- default:
- /* Unknown function */
- pr_debug("unknown function 0x%x\n", funcmode);
- return -EOPNOTSUPP;
- }
- return 0;
-}
-
-static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
-{
- switch (profile) {
- case PLATFORM_PROFILE_LOW_POWER:
- if (dytc_capabilities & BIT(DYTC_FC_MMC))
- *perfmode = DYTC_MODE_MMC_LOWPOWER;
- else if (dytc_capabilities & BIT(DYTC_FC_PSC))
- *perfmode = platform_psc_profile_lowpower;
- break;
- case PLATFORM_PROFILE_BALANCED:
- if (dytc_capabilities & BIT(DYTC_FC_MMC))
- *perfmode = DYTC_MODE_MMC_BALANCE;
- else if (dytc_capabilities & BIT(DYTC_FC_PSC))
- *perfmode = platform_psc_profile_balanced;
- break;
- case PLATFORM_PROFILE_PERFORMANCE:
- if (dytc_capabilities & BIT(DYTC_FC_MMC))
- *perfmode = DYTC_MODE_MMC_PERFORM;
- else if (dytc_capabilities & BIT(DYTC_FC_PSC))
- *perfmode = platform_psc_profile_performance;
- break;
- default: /* Unknown profile */
- return -EOPNOTSUPP;
- }
- return 0;
-}
-
-/*
- * dytc_profile_get: Function to register with platform_profile
- * handler. Returns current platform profile.
- */
-static int dytc_profile_get(struct device *dev,
- enum platform_profile_option *profile)
-{
- *profile = dytc_current_profile;
- return 0;
-}
-
-static int dytc_control_amt(bool enable)
-{
- int dummy;
- int err;
- int cmd;
-
- if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) {
- pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n");
- return -ENODEV;
- }
-
- if (enable)
- cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable);
- else
- cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable);
-
- pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd);
- err = dytc_command(cmd, &dummy);
- if (err)
- return err;
- dytc_amt_active = enable;
- return 0;
-}
-
-/*
- * Helper function - check if we are in CQL mode and if we are
- * - disable CQL,
- * - run the command
- * - enable CQL
- * If not in CQL mode, just run the command
- */
-static int dytc_cql_command(int command, int *output)
-{
- int err, cmd_err, dummy;
- int cur_funcmode;
-
- /* Determine if we are in CQL mode. This alters the commands we do */
- err = dytc_command(DYTC_CMD_GET, output);
- if (err)
- return err;
-
- cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
- /* Check if we're OK to return immediately */
- if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL))
- return 0;
-
- if (cur_funcmode == DYTC_FUNCTION_CQL) {
- atomic_inc(&dytc_ignore_event);
- err = dytc_command(DYTC_DISABLE_CQL, &dummy);
- if (err)
- return err;
- }
-
- cmd_err = dytc_command(command, output);
- /* Check return condition after we've restored CQL state */
-
- if (cur_funcmode == DYTC_FUNCTION_CQL) {
- err = dytc_command(DYTC_ENABLE_CQL, &dummy);
- if (err)
- return err;
- }
- return cmd_err;
-}
-
-/*
- * dytc_profile_set: Function to register with platform_profile
- * handler. Sets current platform profile.
- */
-static int dytc_profile_set(struct device *dev,
- enum platform_profile_option profile)
-{
- int perfmode;
- int output;
- int err;
-
- err = mutex_lock_interruptible(&dytc_mutex);
- if (err)
- return err;
-
- err = convert_profile_to_dytc(profile, &perfmode);
- if (err)
- goto unlock;
-
- if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
- if (profile == PLATFORM_PROFILE_BALANCED) {
- /*
- * To get back to balanced mode we need to issue a reset command.
- * Note we still need to disable CQL mode before hand and re-enable
- * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays
- * stuck at 0 for aprox. 30 minutes.
- */
- err = dytc_cql_command(DYTC_CMD_RESET, &output);
- if (err)
- goto unlock;
- } else {
- /* Determine if we are in CQL mode. This alters the commands we do */
- err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
- &output);
- if (err)
- goto unlock;
- }
- } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
- err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output);
- if (err)
- goto unlock;
-
- /* system supports AMT, activate it when on balanced */
- if (dytc_capabilities & BIT(DYTC_FC_AMT))
- dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED);
- }
- /* Success - update current profile */
- dytc_current_profile = profile;
-unlock:
- mutex_unlock(&dytc_mutex);
- return err;
-}
-
-static int dytc_profile_probe(void *drvdata, unsigned long *choices)
-{
- set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
- set_bit(PLATFORM_PROFILE_BALANCED, choices);
- set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
-
- return 0;
-}
-
-static const struct platform_profile_ops dytc_profile_ops = {
- .probe = dytc_profile_probe,
- .profile_get = dytc_profile_get,
- .profile_set = dytc_profile_set,
-};
-
-static void dytc_profile_refresh(void)
-{
- enum platform_profile_option profile;
- int output = 0, err = 0;
- int perfmode, funcmode = 0;
-
- mutex_lock(&dytc_mutex);
- if (dytc_capabilities & BIT(DYTC_FC_MMC)) {
- if (dytc_mmc_get_available)
- err = dytc_command(DYTC_CMD_MMC_GET, &output);
- else
- err = dytc_cql_command(DYTC_CMD_GET, &output);
- funcmode = DYTC_FUNCTION_MMC;
- } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) {
- err = dytc_command(DYTC_CMD_GET, &output);
- /* Check if we are PSC mode, or have AMT enabled */
- funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF;
- } else { /* Unknown profile mode */
- err = -ENODEV;
- }
- mutex_unlock(&dytc_mutex);
- if (err)
- return;
-
- perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
- err = convert_dytc_to_profile(funcmode, perfmode, &profile);
- if (!err && profile != dytc_current_profile) {
- dytc_current_profile = profile;
- platform_profile_notify(tpacpi_pprof);
- }
-}
-
-static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
-{
- int err, output;
-
- err = dytc_command(DYTC_CMD_QUERY, &output);
- if (err)
- return err;
-
- if (output & BIT(DYTC_QUERY_ENABLE_BIT))
- dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
-
- dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version);
- /* Check DYTC is enabled and supports mode setting */
- if (dytc_version < 5)
- return -ENODEV;
-
- /* Check what capabilities are supported */
- err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities);
- if (err)
- return err;
-
- /* Check if user wants to override the profile selection */
- if (profile_force) {
- switch (profile_force) {
- case -1:
- dytc_capabilities = 0;
- break;
- case 1:
- dytc_capabilities = BIT(DYTC_FC_MMC);
- break;
- case 2:
- dytc_capabilities = BIT(DYTC_FC_PSC);
- break;
- }
- pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities);
- }
- if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */
- pr_debug("MMC is supported\n");
- /*
- * Check if MMC_GET functionality available
- * Version > 6 and return success from MMC_GET command
- */
- dytc_mmc_get_available = false;
- if (dytc_version >= 6) {
- err = dytc_command(DYTC_CMD_MMC_GET, &output);
- if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS))
- dytc_mmc_get_available = true;
- }
- } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */
- pr_debug("PSC is supported\n");
- if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */
- platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER;
- platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE;
- platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM;
- }
- } else {
- dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n");
- return -ENODEV;
- }
-
- dbg_printk(TPACPI_DBG_INIT,
- "DYTC version %d: thermal mode available\n", dytc_version);
-
- /* Create platform_profile structure and register */
- tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile",
- NULL, &dytc_profile_ops);
- /*
- * If for some reason platform_profiles aren't enabled
- * don't quit terminally.
- */
- if (IS_ERR(tpacpi_pprof))
- return -ENODEV;
-
- /* Ensure initial values are correct */
- dytc_profile_refresh();
-
- /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */
- if (dytc_capabilities & BIT(DYTC_FC_PSC))
- dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
-
- return 0;
-}
-
-static void dytc_profile_exit(void)
-{
- if (!IS_ERR_OR_NULL(tpacpi_pprof))
- platform_profile_remove(tpacpi_pprof);
-}
-
-static struct ibm_struct dytc_profile_driver_data = {
- .name = "dytc-profile",
- .exit = dytc_profile_exit,
-};
-
-/*************************************************************************
- * Keyboard language interface
- */
-
-struct keyboard_lang_data {
- const char *lang_str;
- int lang_code;
-};
-
-static const struct keyboard_lang_data keyboard_lang_data[] = {
- {"be", 0x080c},
- {"cz", 0x0405},
- {"da", 0x0406},
- {"de", 0x0c07},
- {"en", 0x0000},
- {"es", 0x2c0a},
- {"et", 0x0425},
- {"fr", 0x040c},
- {"fr-ch", 0x100c},
- {"hu", 0x040e},
- {"it", 0x0410},
- {"jp", 0x0411},
- {"nl", 0x0413},
- {"nn", 0x0414},
- {"pl", 0x0415},
- {"pt", 0x0816},
- {"sl", 0x041b},
- {"sv", 0x081d},
- {"tr", 0x041f},
-};
-
-static int set_keyboard_lang_command(int command)
-{
- acpi_handle sskl_handle;
- int output;
-
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) {
- /* Platform doesn't support SSKL */
- return -ENODEV;
- }
-
- if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command))
- return -EIO;
-
- return 0;
-}
-
-static int get_keyboard_lang(int *output)
-{
- acpi_handle gskl_handle;
- int kbd_lang;
-
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) {
- /* Platform doesn't support GSKL */
- return -ENODEV;
- }
-
- if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000))
- return -EIO;
-
- /*
- * METHOD_ERR gets returned on devices where there are no special (e.g. '=',
- * '(' and ')') keys which use layout dependent key-press emulation.
- */
- if (kbd_lang & METHOD_ERR)
- return -ENODEV;
-
- *output = kbd_lang;
-
- return 0;
-}
-
-/* sysfs keyboard language entry */
-static ssize_t keyboard_lang_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int output, err, i, len = 0;
-
- err = get_keyboard_lang(&output);
- if (err)
- return err;
-
- for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
- if (i)
- len += sysfs_emit_at(buf, len, "%s", " ");
-
- if (output == keyboard_lang_data[i].lang_code) {
- len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str);
- } else {
- len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str);
- }
- }
- len += sysfs_emit_at(buf, len, "\n");
-
- return len;
-}
-
-static ssize_t keyboard_lang_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- int err, i;
- bool lang_found = false;
- int lang_code = 0;
-
- for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
- if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) {
- lang_code = keyboard_lang_data[i].lang_code;
- lang_found = true;
- break;
- }
- }
-
- if (lang_found) {
- lang_code = lang_code | 1 << 24;
-
- /* Set language code */
- err = set_keyboard_lang_command(lang_code);
- if (err)
- return err;
- } else {
- dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n");
- return -EINVAL;
- }
-
- tpacpi_disclose_usertask(attr->attr.name,
- "keyboard language is set to %s\n", buf);
-
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang");
-
- return count;
-}
-static DEVICE_ATTR_RW(keyboard_lang);
-
-static struct attribute *kbdlang_attributes[] = {
- &dev_attr_keyboard_lang.attr,
- NULL
-};
-
-static umode_t kbdlang_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return tp_features.kbd_lang ? attr->mode : 0;
-}
-
-static const struct attribute_group kbdlang_attr_group = {
- .is_visible = kbdlang_attr_is_visible,
- .attrs = kbdlang_attributes,
-};
-
-static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm)
-{
- int err, output;
-
- err = get_keyboard_lang(&output);
- tp_features.kbd_lang = !err;
- return err;
-}
-
-static struct ibm_struct kbdlang_driver_data = {
- .name = "kbdlang",
-};
-
-/*************************************************************************
- * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
- * and WLAN feature.
- */
-#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000
-#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4)
-#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8)
-static bool has_antennatype;
-static int wwan_antennatype;
-
-static int dprc_command(int command, int *output)
-{
- acpi_handle dprc_handle;
-
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) {
- /* Platform doesn't support DPRC */
- return -ENODEV;
- }
-
- if (!acpi_evalf(dprc_handle, output, NULL, "dd", command))
- return -EIO;
-
- /*
- * METHOD_ERR gets returned on devices where few commands are not supported
- * for example command to get WWAN Antenna type command is not supported on
- * some devices.
- */
- if (*output & METHOD_ERR)
- return -ENODEV;
-
- return 0;
-}
-
-static int get_wwan_antenna(int *wwan_antennatype)
-{
- int output, err;
-
- /* Get current Antenna type */
- err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output);
- if (err)
- return err;
-
- if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT)
- *wwan_antennatype = 1;
- else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT)
- *wwan_antennatype = 2;
- else
- return -ENODEV;
-
- return 0;
-}
-
-/* sysfs wwan antenna type entry */
-static ssize_t wwan_antenna_type_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- switch (wwan_antennatype) {
- case 1:
- return sysfs_emit(buf, "type a\n");
- case 2:
- return sysfs_emit(buf, "type b\n");
- default:
- return -ENODATA;
- }
-}
-static DEVICE_ATTR_RO(wwan_antenna_type);
-
-static struct attribute *dprc_attributes[] = {
- &dev_attr_wwan_antenna_type.attr,
- NULL
-};
-
-static umode_t dprc_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return has_antennatype ? attr->mode : 0;
-}
-
-static const struct attribute_group dprc_attr_group = {
- .is_visible = dprc_attr_is_visible,
- .attrs = dprc_attributes,
-};
-
-static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
-{
- int err;
-
- err = get_wwan_antenna(&wwan_antennatype);
- if (err)
- return err;
-
- has_antennatype = true;
- return 0;
-}
-
-static struct ibm_struct dprc_driver_data = {
- .name = "dprc",
-};
-
-/*
- * Auxmac
- *
- * This auxiliary mac address is enabled in the bios through the
- * MAC Address Pass-through feature. In most cases, there are three
- * possibilities: Internal Mac, Second Mac, and disabled.
- *
- */
-
-#define AUXMAC_LEN 12
-#define AUXMAC_START 9
-#define AUXMAC_STRLEN 22
-#define AUXMAC_BEGIN_MARKER 8
-#define AUXMAC_END_MARKER 21
-
-static char auxmac[AUXMAC_LEN + 1];
-
-static int auxmac_init(struct ibm_init_struct *iibm)
-{
- acpi_status status;
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
-
- status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer);
-
- if (ACPI_FAILURE(status))
- return -ENODEV;
-
- obj = buffer.pointer;
-
- if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) {
- pr_info("Invalid buffer for MAC address pass-through.\n");
- goto auxmacinvalid;
- }
-
- if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' ||
- obj->string.pointer[AUXMAC_END_MARKER] != '#') {
- pr_info("Invalid header for MAC address pass-through.\n");
- goto auxmacinvalid;
- }
-
- if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0)
- strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac));
- else
- strscpy(auxmac, "disabled", sizeof(auxmac));
-
-free:
- kfree(obj);
- return 0;
-
-auxmacinvalid:
- strscpy(auxmac, "unavailable", sizeof(auxmac));
- goto free;
-}
-
-static struct ibm_struct auxmac_data = {
- .name = "auxmac",
-};
-
-static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac);
-
-static umode_t auxmac_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- return auxmac[0] == 0 ? 0 : attr->mode;
-}
-
-static struct attribute *auxmac_attributes[] = {
- &dev_attr_auxmac.attr.attr,
- NULL
-};
-
-static const struct attribute_group auxmac_attr_group = {
- .is_visible = auxmac_attr_is_visible,
- .attrs = auxmac_attributes,
-};
-
-/* --------------------------------------------------------------------- */
-
-static struct attribute *tpacpi_driver_attributes[] = {
- &driver_attr_debug_level.attr,
- &driver_attr_version.attr,
- &driver_attr_interface_version.attr,
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- &driver_attr_wlsw_emulstate.attr,
- &driver_attr_bluetooth_emulstate.attr,
- &driver_attr_wwan_emulstate.attr,
- &driver_attr_uwb_emulstate.attr,
-#endif
- NULL
-};
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
-static umode_t tpacpi_attr_is_visible(struct kobject *kobj,
- struct attribute *attr, int n)
-{
- if (attr == &driver_attr_wlsw_emulstate.attr) {
- if (!dbg_wlswemul)
- return 0;
- } else if (attr == &driver_attr_bluetooth_emulstate.attr) {
- if (!dbg_bluetoothemul)
- return 0;
- } else if (attr == &driver_attr_wwan_emulstate.attr) {
- if (!dbg_wwanemul)
- return 0;
- } else if (attr == &driver_attr_uwb_emulstate.attr) {
- if (!dbg_uwbemul)
- return 0;
- }
-
- return attr->mode;
-}
-#endif
-
-static const struct attribute_group tpacpi_driver_attr_group = {
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- .is_visible = tpacpi_attr_is_visible,
-#endif
- .attrs = tpacpi_driver_attributes,
-};
-
-static const struct attribute_group *tpacpi_driver_groups[] = {
- &tpacpi_driver_attr_group,
- NULL,
-};
-
-static const struct attribute_group *tpacpi_groups[] = {
- &adaptive_kbd_attr_group,
- &hotkey_attr_group,
- &bluetooth_attr_group,
- &wan_attr_group,
- &cmos_attr_group,
- &proxsensor_attr_group,
- &kbdlang_attr_group,
- &dprc_attr_group,
- &auxmac_attr_group,
- NULL,
-};
-
-static const struct attribute_group *tpacpi_hwmon_groups[] = {
- &thermal_attr_group,
- &temp_label_attr_group,
- &fan_attr_group,
- NULL,
-};
-
-static const struct attribute_group *tpacpi_hwmon_driver_groups[] = {
- &fan_driver_attr_group,
- NULL,
-};
-
-/****************************************************************************
- ****************************************************************************
- *
- * Platform drivers
- *
- ****************************************************************************
- ****************************************************************************/
-
-static struct platform_driver tpacpi_pdriver = {
- .driver = {
- .name = TPACPI_DRVR_NAME,
- .pm = &tpacpi_pm,
- .groups = tpacpi_driver_groups,
- .dev_groups = tpacpi_groups,
- },
- .shutdown = tpacpi_shutdown_handler,
-};
-
-static struct platform_driver tpacpi_hwmon_pdriver = {
- .driver = {
- .name = TPACPI_HWMON_DRVR_NAME,
- .groups = tpacpi_hwmon_driver_groups,
- },
-};
-
-/****************************************************************************
- ****************************************************************************
- *
- * Infrastructure
- *
- ****************************************************************************
- ****************************************************************************/
-
-/*
- * HKEY event callout for other subdrivers go here
- * (yes, it is ugly, but it is quick, safe, and gets the job done
- */
-static bool tpacpi_driver_event(const unsigned int hkey_event)
-{
- int camera_shutter_state;
-
- switch (hkey_event) {
- case TP_HKEY_EV_BRGHT_UP:
- case TP_HKEY_EV_BRGHT_DOWN:
- if (ibm_backlight_device)
- tpacpi_brightness_notify_change();
- /*
- * Key press events are suppressed by default hotkey_user_mask
- * and should still be reported if explicitly requested.
- */
- return false;
- case TP_HKEY_EV_VOL_UP:
- case TP_HKEY_EV_VOL_DOWN:
- case TP_HKEY_EV_VOL_MUTE:
- if (alsa_card)
- volume_alsa_notify_change();
-
- /* Key events are suppressed by default hotkey_user_mask */
- return false;
- case TP_HKEY_EV_KBD_LIGHT:
- if (tp_features.kbdlight) {
- enum led_brightness brightness;
-
- mutex_lock(&kbdlight_mutex);
-
- /*
- * Check the brightness actually changed, setting the brightness
- * through kbdlight_set_level() also triggers this event.
- */
- brightness = kbdlight_sysfs_get(NULL);
- if (kbdlight_brightness != brightness) {
- kbdlight_brightness = brightness;
- led_classdev_notify_brightness_hw_changed(
- &tpacpi_led_kbdlight.led_classdev, brightness);
- }
-
- mutex_unlock(&kbdlight_mutex);
- }
- /* Key events are suppressed by default hotkey_user_mask */
- return false;
- case TP_HKEY_EV_DFR_CHANGE_ROW:
- adaptive_keyboard_change_row();
- return true;
- case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW:
- adaptive_keyboard_s_quickview_row();
- return true;
- case TP_HKEY_EV_THM_CSM_COMPLETED:
- lapsensor_refresh();
- /* If we are already accessing DYTC then skip dytc update */
- if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
- dytc_profile_refresh();
-
- return true;
- case TP_HKEY_EV_PRIVACYGUARD_TOGGLE:
- if (lcdshadow_dev) {
- enum drm_privacy_screen_status old_hw_state;
- bool changed;
-
- mutex_lock(&lcdshadow_dev->lock);
- old_hw_state = lcdshadow_dev->hw_state;
- lcdshadow_get_hw_state(lcdshadow_dev);
- changed = lcdshadow_dev->hw_state != old_hw_state;
- mutex_unlock(&lcdshadow_dev->lock);
-
- if (changed)
- drm_privacy_screen_call_notifier_chain(lcdshadow_dev);
- }
- return true;
- case TP_HKEY_EV_AMT_TOGGLE:
- /* If we're enabling AMT we need to force balanced mode */
- if (!dytc_amt_active)
- /* This will also set AMT mode enabled */
- dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED);
- else
- dytc_control_amt(!dytc_amt_active);
-
- return true;
- case TP_HKEY_EV_CAMERASHUTTER_TOGGLE:
- camera_shutter_state = get_camera_shutter();
- if (camera_shutter_state < 0) {
- pr_err("Error retrieving camera shutter state after shutter event\n");
- return true;
- }
- mutex_lock(&tpacpi_inputdev_send_mutex);
-
- input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state);
- input_sync(tpacpi_inputdev);
-
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- return true;
- case TP_HKEY_EV_DOUBLETAP_TOGGLE:
- tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap;
- return true;
- case TP_HKEY_EV_PROFILE_TOGGLE:
- case TP_HKEY_EV_PROFILE_TOGGLE2:
- platform_profile_cycle();
- return true;
- }
-
- return false;
-}
-
-/* --------------------------------------------------------------------- */
-
-/* /proc support */
-static struct proc_dir_entry *proc_dir;
-
-/*
- * Module and infrastructure proble, init and exit handling
- */
-
-static bool force_load;
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUG
-static const char * __init str_supported(int is_supported)
-{
- static char text_unsupported[] __initdata = "not supported";
-
- return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
-}
-#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
-
-static void ibm_exit(struct ibm_struct *ibm)
-{
- dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
-
- list_del_init(&ibm->all_drivers);
-
- if (ibm->flags.acpi_notify_installed) {
- dbg_printk(TPACPI_DBG_EXIT,
- "%s: acpi_remove_notify_handler\n", ibm->name);
- BUG_ON(!ibm->acpi);
- acpi_remove_notify_handler(*ibm->acpi->handle,
- ibm->acpi->type,
- dispatch_acpi_notify);
- ibm->flags.acpi_notify_installed = 0;
- }
-
- if (ibm->flags.proc_created) {
- dbg_printk(TPACPI_DBG_EXIT,
- "%s: remove_proc_entry\n", ibm->name);
- remove_proc_entry(ibm->name, proc_dir);
- ibm->flags.proc_created = 0;
- }
-
- if (ibm->flags.acpi_driver_registered) {
- dbg_printk(TPACPI_DBG_EXIT,
- "%s: acpi_bus_unregister_driver\n", ibm->name);
- BUG_ON(!ibm->acpi);
- acpi_bus_unregister_driver(ibm->acpi->driver);
- kfree(ibm->acpi->driver);
- ibm->acpi->driver = NULL;
- ibm->flags.acpi_driver_registered = 0;
- }
-
- if (ibm->flags.init_called && ibm->exit) {
- ibm->exit();
- ibm->flags.init_called = 0;
- }
-
- dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
-}
-
-static int __init ibm_init(struct ibm_init_struct *iibm)
-{
- int ret;
- struct ibm_struct *ibm = iibm->data;
- struct proc_dir_entry *entry;
-
- BUG_ON(ibm == NULL);
-
- INIT_LIST_HEAD(&ibm->all_drivers);
-
- if (ibm->flags.experimental && !experimental)
- return 0;
-
- dbg_printk(TPACPI_DBG_INIT,
- "probing for %s\n", ibm->name);
-
- if (iibm->init) {
- ret = iibm->init(iibm);
- if (ret > 0 || ret == -ENODEV)
- return 0; /* subdriver functionality not available */
- if (ret)
- return ret;
-
- ibm->flags.init_called = 1;
- }
-
- if (ibm->acpi) {
- if (ibm->acpi->hid) {
- ret = register_tpacpi_subdriver(ibm);
- if (ret)
- goto err_out;
- }
-
- if (ibm->acpi->notify) {
- ret = setup_acpi_notify(ibm);
- if (ret == -ENODEV) {
- pr_notice("disabling subdriver %s\n",
- ibm->name);
- ret = 0;
- goto err_out;
- }
- if (ret < 0)
- goto err_out;
- }
- }
-
- dbg_printk(TPACPI_DBG_INIT,
- "%s installed\n", ibm->name);
-
- if (ibm->read) {
- umode_t mode = iibm->base_procfs_mode;
-
- if (!mode)
- mode = S_IRUGO;
- if (ibm->write)
- mode |= S_IWUSR;
- entry = proc_create_data(ibm->name, mode, proc_dir,
- &dispatch_proc_ops, ibm);
- if (!entry) {
- pr_err("unable to create proc entry %s\n", ibm->name);
- ret = -ENODEV;
- goto err_out;
- }
- ibm->flags.proc_created = 1;
- }
-
- list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
-
- return 0;
-
-err_out:
- dbg_printk(TPACPI_DBG_INIT,
- "%s: at error exit path with result %d\n",
- ibm->name, ret);
-
- ibm_exit(ibm);
- return (ret < 0) ? ret : 0;
-}
-
-/* Probing */
-
-static char __init tpacpi_parse_fw_id(const char * const s,
- u32 *model, u16 *release)
-{
- int i;
-
- if (!s || strlen(s) < 8)
- goto invalid;
-
- for (i = 0; i < 8; i++)
- if (!((s[i] >= '0' && s[i] <= '9') ||
- (s[i] >= 'A' && s[i] <= 'Z')))
- goto invalid;
-
- /*
- * Most models: xxyTkkWW (#.##c)
- * Ancient 570/600 and -SL lacks (#.##c)
- */
- if (s[3] == 'T' || s[3] == 'N') {
- *model = TPID(s[0], s[1]);
- *release = TPVER(s[4], s[5]);
- return s[2];
-
- /* New models: xxxyTkkW (#.##c); T550 and some others */
- } else if (s[4] == 'T' || s[4] == 'N') {
- *model = TPID3(s[0], s[1], s[2]);
- *release = TPVER(s[5], s[6]);
- return s[3];
- }
-
-invalid:
- return '\0';
-}
-
-#define EC_FW_STRING_LEN 18
-
-static void find_new_ec_fwstr(const struct dmi_header *dm, void *private)
-{
- char *ec_fw_string = (char *) private;
- const char *dmi_data = (const char *)dm;
- /*
- * ThinkPad Embedded Controller Program Table on newer models
- *
- * Offset | Name | Width | Description
- * ----------------------------------------------------
- * 0x00 | Type | BYTE | 0x8C
- * 0x01 | Length | BYTE |
- * 0x02 | Handle | WORD | Varies
- * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO"
- * 0x0A | OEM struct offset | BYTE | 0x0B
- * 0x0B | OEM struct number | BYTE | 0x07, for this structure
- * 0x0C | OEM struct revision | BYTE | 0x01, for this format
- * 0x0D | ECP version ID | STR ID |
- * 0x0E | ECP release date | STR ID |
- */
-
- /* Return if data structure not match */
- if (dm->type != 140 || dm->length < 0x0F ||
- memcmp(dmi_data + 4, "LENOVO", 6) != 0 ||
- dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 ||
- dmi_data[0x0C] != 0x01)
- return;
-
- /* fwstr is the first 8byte string */
- BUILD_BUG_ON(EC_FW_STRING_LEN <= 8);
- memcpy(ec_fw_string, dmi_data + 0x0F, 8);
-}
-
-/* returns 0 - probe ok, or < 0 - probe error.
- * Probe ok doesn't mean thinkpad found.
- * On error, kfree() cleanup on tp->* is not performed, caller must do it */
-static int __must_check __init get_thinkpad_model_data(
- struct thinkpad_id_data *tp)
-{
- const struct dmi_device *dev = NULL;
- char ec_fw_string[EC_FW_STRING_LEN] = {0};
- char const *s;
- char t;
-
- if (!tp)
- return -EINVAL;
-
- memset(tp, 0, sizeof(*tp));
-
- if (dmi_name_in_vendors("IBM"))
- tp->vendor = PCI_VENDOR_ID_IBM;
- else if (dmi_name_in_vendors("LENOVO"))
- tp->vendor = PCI_VENDOR_ID_LENOVO;
- else if (dmi_name_in_vendors("NEC"))
- tp->vendor = PCI_VENDOR_ID_LENOVO;
- else
- return 0;
-
- s = dmi_get_system_info(DMI_BIOS_VERSION);
- tp->bios_version_str = kstrdup(s, GFP_KERNEL);
- if (s && !tp->bios_version_str)
- return -ENOMEM;
-
- /* Really ancient ThinkPad 240X will fail this, which is fine */
- t = tpacpi_parse_fw_id(tp->bios_version_str,
- &tp->bios_model, &tp->bios_release);
- if (t != 'E' && t != 'C')
- return 0;
-
- /*
- * ThinkPad T23 or newer, A31 or newer, R50e or newer,
- * X32 or newer, all Z series; Some models must have an
- * up-to-date BIOS or they will not be detected.
- *
- * See https://thinkwiki.org/wiki/List_of_DMI_IDs
- */
- while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
- if (sscanf(dev->name,
- "IBM ThinkPad Embedded Controller -[%17c",
- ec_fw_string) == 1) {
- ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
- ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
- break;
- }
- }
-
- /* Newer ThinkPads have different EC program info table */
- if (!ec_fw_string[0])
- dmi_walk(find_new_ec_fwstr, &ec_fw_string);
-
- if (ec_fw_string[0]) {
- tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
- if (!tp->ec_version_str)
- return -ENOMEM;
-
- t = tpacpi_parse_fw_id(ec_fw_string,
- &tp->ec_model, &tp->ec_release);
- if (t != 'H') {
- pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
- ec_fw_string);
- pr_notice("please report this to %s\n", TPACPI_MAIL);
- }
- }
-
- s = dmi_get_system_info(DMI_PRODUCT_VERSION);
- if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
- tp->model_str = kstrdup(s, GFP_KERNEL);
- if (!tp->model_str)
- return -ENOMEM;
- } else {
- s = dmi_get_system_info(DMI_BIOS_VENDOR);
- if (s && !(strncasecmp(s, "Lenovo", 6))) {
- tp->model_str = kstrdup(s, GFP_KERNEL);
- if (!tp->model_str)
- return -ENOMEM;
- }
- }
-
- s = dmi_get_system_info(DMI_PRODUCT_NAME);
- tp->nummodel_str = kstrdup(s, GFP_KERNEL);
- if (s && !tp->nummodel_str)
- return -ENOMEM;
-
- return 0;
-}
-
-static int __init probe_for_thinkpad(void)
-{
- int is_thinkpad;
-
- if (acpi_disabled)
- return -ENODEV;
-
- /* It would be dangerous to run the driver in this case */
- if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
- return -ENODEV;
-
- /*
- * Non-ancient models have better DMI tagging, but very old models
- * don't. tpacpi_is_fw_known() is a cheat to help in that case.
- */
- is_thinkpad = (thinkpad_id.model_str != NULL) ||
- (thinkpad_id.ec_model != 0) ||
- tpacpi_is_fw_known();
-
- /* The EC handler is required */
- tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
- if (!ec_handle) {
- if (is_thinkpad)
- pr_err("Not yet supported ThinkPad detected!\n");
- return -ENODEV;
- }
-
- if (!is_thinkpad && !force_load)
- return -ENODEV;
-
- return 0;
-}
-
-static void __init thinkpad_acpi_init_banner(void)
-{
- pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
- pr_info("%s\n", TPACPI_URL);
-
- pr_info("ThinkPad BIOS %s, EC %s\n",
- (thinkpad_id.bios_version_str) ?
- thinkpad_id.bios_version_str : "unknown",
- (thinkpad_id.ec_version_str) ?
- thinkpad_id.ec_version_str : "unknown");
-
- BUG_ON(!thinkpad_id.vendor);
-
- if (thinkpad_id.model_str)
- pr_info("%s %s, model %s\n",
- (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
- "IBM" : ((thinkpad_id.vendor ==
- PCI_VENDOR_ID_LENOVO) ?
- "Lenovo" : "Unknown vendor"),
- thinkpad_id.model_str,
- (thinkpad_id.nummodel_str) ?
- thinkpad_id.nummodel_str : "unknown");
-}
-
-/* Module init, exit, parameters */
-
-static struct ibm_init_struct ibms_init[] __initdata = {
- {
- .data = &thinkpad_acpi_driver_data,
- },
- {
- .init = hotkey_init,
- .data = &hotkey_driver_data,
- },
- {
- .init = bluetooth_init,
- .data = &bluetooth_driver_data,
- },
- {
- .init = wan_init,
- .data = &wan_driver_data,
- },
- {
- .init = uwb_init,
- .data = &uwb_driver_data,
- },
-#ifdef CONFIG_THINKPAD_ACPI_VIDEO
- {
- .init = video_init,
- .base_procfs_mode = S_IRUSR,
- .data = &video_driver_data,
- },
-#endif
- {
- .init = kbdlight_init,
- .data = &kbdlight_driver_data,
- },
- {
- .init = light_init,
- .data = &light_driver_data,
- },
- {
- .init = cmos_init,
- .data = &cmos_driver_data,
- },
- {
- .init = led_init,
- .data = &led_driver_data,
- },
- {
- .init = beep_init,
- .data = &beep_driver_data,
- },
- {
- .init = thermal_init,
- .data = &thermal_driver_data,
- },
- {
- .init = brightness_init,
- .data = &brightness_driver_data,
- },
- {
- .init = volume_init,
- .data = &volume_driver_data,
- },
- {
- .init = fan_init,
- .data = &fan_driver_data,
- },
- {
- .init = mute_led_init,
- .data = &mute_led_driver_data,
- },
- {
- .init = tpacpi_battery_init,
- .data = &battery_driver_data,
- },
- {
- .init = tpacpi_lcdshadow_init,
- .data = &lcdshadow_driver_data,
- },
- {
- .init = tpacpi_proxsensor_init,
- .data = &proxsensor_driver_data,
- },
- {
- .init = tpacpi_dytc_profile_init,
- .data = &dytc_profile_driver_data,
- },
- {
- .init = tpacpi_kbdlang_init,
- .data = &kbdlang_driver_data,
- },
- {
- .init = tpacpi_dprc_init,
- .data = &dprc_driver_data,
- },
- {
- .init = auxmac_init,
- .data = &auxmac_data,
- },
-};
-
-static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
-{
- unsigned int i;
- struct ibm_struct *ibm;
-
- if (!kp || !kp->name || !val)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
- ibm = ibms_init[i].data;
- if (!ibm || !ibm->name)
- continue;
-
- if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
- if (strlen(val) > sizeof(ibms_init[i].param) - 1)
- return -ENOSPC;
- strscpy(ibms_init[i].param, val);
- return 0;
- }
- }
-
- return -EINVAL;
-}
-
-module_param(experimental, int, 0444);
-MODULE_PARM_DESC(experimental,
- "Enables experimental features when non-zero");
-
-module_param_named(debug, dbg_level, uint, 0);
-MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
-
-module_param(force_load, bool, 0444);
-MODULE_PARM_DESC(force_load,
- "Attempts to load the driver even on a mis-identified ThinkPad when true");
-
-module_param_named(fan_control, fan_control_allowed, bool, 0444);
-MODULE_PARM_DESC(fan_control,
- "Enables setting fan parameters features when true");
-
-module_param_named(brightness_mode, brightness_mode, uint, 0444);
-MODULE_PARM_DESC(brightness_mode,
- "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
-
-module_param(brightness_enable, uint, 0444);
-MODULE_PARM_DESC(brightness_enable,
- "Enables backlight control when 1, disables when 0");
-
-#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
-module_param_named(volume_mode, volume_mode, uint, 0444);
-MODULE_PARM_DESC(volume_mode,
- "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
-
-module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
-MODULE_PARM_DESC(volume_capabilities,
- "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only");
-
-module_param_named(volume_control, volume_control_allowed, bool, 0444);
-MODULE_PARM_DESC(volume_control,
- "Enables software override for the console audio control when true");
-
-module_param_named(software_mute, software_mute_requested, bool, 0444);
-MODULE_PARM_DESC(software_mute,
- "Request full software mute control");
-
-/* ALSA module API parameters */
-module_param_named(index, alsa_index, int, 0444);
-MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
-module_param_named(id, alsa_id, charp, 0444);
-MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
-module_param_named(enable, alsa_enable, bool, 0444);
-MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
-#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
-
-/* The module parameter can't be read back, that's why 0 is used here */
-#define TPACPI_PARAM(feature) \
- module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
- MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
-
-TPACPI_PARAM(hotkey);
-TPACPI_PARAM(bluetooth);
-TPACPI_PARAM(video);
-TPACPI_PARAM(light);
-TPACPI_PARAM(cmos);
-TPACPI_PARAM(led);
-TPACPI_PARAM(beep);
-TPACPI_PARAM(brightness);
-TPACPI_PARAM(volume);
-TPACPI_PARAM(fan);
-
-#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
-module_param(dbg_wlswemul, uint, 0444);
-MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
-module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
-MODULE_PARM_DESC(wlsw_state,
- "Initial state of the emulated WLSW switch");
-
-module_param(dbg_bluetoothemul, uint, 0444);
-MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
-module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
-MODULE_PARM_DESC(bluetooth_state,
- "Initial state of the emulated bluetooth switch");
-
-module_param(dbg_wwanemul, uint, 0444);
-MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
-module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
-MODULE_PARM_DESC(wwan_state,
- "Initial state of the emulated WWAN switch");
-
-module_param(dbg_uwbemul, uint, 0444);
-MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
-module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
-MODULE_PARM_DESC(uwb_state,
- "Initial state of the emulated UWB switch");
-#endif
-
-module_param(profile_force, int, 0444);
-MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC");
-
-static void thinkpad_acpi_module_exit(void)
-{
- tpacpi_lifecycle = TPACPI_LIFE_EXITING;
-
- if (tpacpi_sensors_pdev) {
- platform_driver_unregister(&tpacpi_hwmon_pdriver);
- platform_device_unregister(tpacpi_sensors_pdev);
- }
-
- if (tp_features.platform_drv_registered)
- platform_driver_unregister(&tpacpi_pdriver);
- if (tpacpi_pdev)
- platform_device_unregister(tpacpi_pdev);
-
- if (proc_dir)
- remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
- if (tpacpi_wq)
- destroy_workqueue(tpacpi_wq);
-
- kfree(thinkpad_id.bios_version_str);
- kfree(thinkpad_id.ec_version_str);
- kfree(thinkpad_id.model_str);
- kfree(thinkpad_id.nummodel_str);
-}
-
-static void tpacpi_subdrivers_release(void *data)
-{
- struct ibm_struct *ibm, *itmp;
-
- list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers)
- ibm_exit(ibm);
-
- dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
-}
-
-static int __init tpacpi_pdriver_probe(struct platform_device *pdev)
-{
- int ret;
-
- ret = devm_mutex_init(&pdev->dev, &tpacpi_inputdev_send_mutex);
- if (ret)
- return ret;
-
- tpacpi_inputdev = devm_input_allocate_device(&pdev->dev);
- if (!tpacpi_inputdev)
- return -ENOMEM;
-
- tpacpi_inputdev->name = "ThinkPad Extra Buttons";
- tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
- tpacpi_inputdev->id.bustype = BUS_HOST;
- tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
- tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
- tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
- tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
-
- /* Init subdriver dependencies */
- tpacpi_detect_brightness_capabilities();
-
- /* Init subdrivers */
- for (unsigned int i = 0; i < ARRAY_SIZE(ibms_init); i++) {
- ret = ibm_init(&ibms_init[i]);
- if (ret >= 0 && *ibms_init[i].param)
- ret = ibms_init[i].data->write(ibms_init[i].param);
- if (ret < 0) {
- tpacpi_subdrivers_release(NULL);
- return ret;
- }
- }
-
- ret = devm_add_action_or_reset(&pdev->dev, tpacpi_subdrivers_release, NULL);
- if (ret)
- return ret;
-
- ret = input_register_device(tpacpi_inputdev);
- if (ret < 0)
- pr_err("unable to register input device\n");
-
- return ret;
-}
-
-static int __init tpacpi_hwmon_pdriver_probe(struct platform_device *pdev)
-{
- tpacpi_hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, TPACPI_NAME,
- NULL, tpacpi_hwmon_groups);
- if (IS_ERR(tpacpi_hwmon))
- pr_err("unable to register hwmon device\n");
-
- return PTR_ERR_OR_ZERO(tpacpi_hwmon);
-}
-
-static int __init thinkpad_acpi_module_init(void)
-{
- const struct dmi_system_id *dmi_id;
- int ret;
- acpi_object_type obj_type;
-
- tpacpi_lifecycle = TPACPI_LIFE_INIT;
-
- /* Driver-level probe */
-
- ret = get_thinkpad_model_data(&thinkpad_id);
- if (ret) {
- pr_err("unable to get DMI data: %d\n", ret);
- thinkpad_acpi_module_exit();
- return ret;
- }
- ret = probe_for_thinkpad();
- if (ret) {
- thinkpad_acpi_module_exit();
- return ret;
- }
-
- /* Driver initialization */
-
- thinkpad_acpi_init_banner();
- tpacpi_check_outdated_fw();
-
- TPACPI_ACPIHANDLE_INIT(ecrd);
- TPACPI_ACPIHANDLE_INIT(ecwr);
-
- /*
- * Quirk: in some models (e.g. X380 Yoga), an object named ECRD
- * exists, but it is a register, not a method.
- */
- if (ecrd_handle) {
- acpi_get_type(ecrd_handle, &obj_type);
- if (obj_type != ACPI_TYPE_METHOD)
- ecrd_handle = NULL;
- }
- if (ecwr_handle) {
- acpi_get_type(ecwr_handle, &obj_type);
- if (obj_type != ACPI_TYPE_METHOD)
- ecwr_handle = NULL;
- }
-
- tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
- if (!tpacpi_wq) {
- thinkpad_acpi_module_exit();
- return -ENOMEM;
- }
-
- proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
- if (!proc_dir) {
- pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
- thinkpad_acpi_module_exit();
- return -ENODEV;
- }
-
- dmi_id = dmi_first_match(fwbug_list);
- if (dmi_id)
- tp_features.quirks = dmi_id->driver_data;
-
- /* Device initialization */
- tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE,
- NULL, 0);
- if (IS_ERR(tpacpi_pdev)) {
- ret = PTR_ERR(tpacpi_pdev);
- tpacpi_pdev = NULL;
- pr_err("unable to register platform device\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
-
- ret = platform_driver_probe(&tpacpi_pdriver, tpacpi_pdriver_probe);
- if (ret) {
- pr_err("unable to register main platform driver\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- tp_features.platform_drv_registered = 1;
-
- tpacpi_sensors_pdev = platform_create_bundle(&tpacpi_hwmon_pdriver,
- tpacpi_hwmon_pdriver_probe,
- NULL, 0, NULL, 0);
- if (IS_ERR(tpacpi_sensors_pdev)) {
- ret = PTR_ERR(tpacpi_sensors_pdev);
- tpacpi_sensors_pdev = NULL;
- pr_err("unable to register hwmon platform device/driver bundle\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
-
- tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
-
- return 0;
-}
-
-MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
-
-/*
- * This will autoload the driver in almost every ThinkPad
- * in widespread use.
- *
- * Only _VERY_ old models, like the 240, 240x and 570 lack
- * the HKEY event interface.
- */
-MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
-
-/*
- * DMI matching for module autoloading
- *
- * See https://thinkwiki.org/wiki/List_of_DMI_IDs
- * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
- *
- * Only models listed in thinkwiki will be supported, so add yours
- * if it is not there yet.
- */
-#define IBM_BIOS_MODULE_ALIAS(__type) \
- MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
-
-/* Ancient thinkpad BIOSes have to be identified by
- * BIOS type or model number, and there are far less
- * BIOS types than model numbers... */
-IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
-
-MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
-MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
-MODULE_DESCRIPTION(TPACPI_DESC);
-MODULE_VERSION(TPACPI_VERSION);
-MODULE_LICENSE("GPL");
-
-module_init(thinkpad_acpi_module_init);
-module_exit(thinkpad_acpi_module_exit);
projects / linux-2.6-microblaze.git / commitdiff