1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Asus PC WMI hotkey driver
5 * Copyright(C) 2010 Intel Corporation.
6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
8 * Portions based on wistron_btns.c:
9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/types.h>
20 #include <linux/slab.h>
21 #include <linux/input.h>
22 #include <linux/input/sparse-keymap.h>
24 #include <linux/backlight.h>
25 #include <linux/leds.h>
26 #include <linux/rfkill.h>
27 #include <linux/pci.h>
28 #include <linux/pci_hotplug.h>
29 #include <linux/power_supply.h>
30 #include <linux/hwmon.h>
31 #include <linux/hwmon-sysfs.h>
32 #include <linux/debugfs.h>
33 #include <linux/seq_file.h>
34 #include <linux/platform_data/x86/asus-wmi.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/dmi.h>
38 #include <linux/units.h>
40 #include <acpi/battery.h>
41 #include <acpi/video.h>
45 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
46 "Yong Wang <yong.y.wang@intel.com>");
47 MODULE_DESCRIPTION("Asus Generic WMI Driver");
48 MODULE_LICENSE("GPL");
50 #define to_asus_wmi_driver(pdrv) \
51 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
53 #define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
55 #define NOTIFY_BRNUP_MIN 0x11
56 #define NOTIFY_BRNUP_MAX 0x1f
57 #define NOTIFY_BRNDOWN_MIN 0x20
58 #define NOTIFY_BRNDOWN_MAX 0x2e
59 #define NOTIFY_FNLOCK_TOGGLE 0x4e
60 #define NOTIFY_KBD_DOCK_CHANGE 0x75
61 #define NOTIFY_KBD_BRTUP 0xc4
62 #define NOTIFY_KBD_BRTDWN 0xc5
63 #define NOTIFY_KBD_BRTTOGGLE 0xc7
64 #define NOTIFY_KBD_FBM 0x99
65 #define NOTIFY_KBD_TTP 0xae
66 #define NOTIFY_LID_FLIP 0xfa
68 #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
70 #define ASUS_FAN_DESC "cpu_fan"
71 #define ASUS_FAN_MFUN 0x13
72 #define ASUS_FAN_SFUN_READ 0x06
73 #define ASUS_FAN_SFUN_WRITE 0x07
75 /* Based on standard hwmon pwmX_enable values */
76 #define ASUS_FAN_CTRL_FULLSPEED 0
77 #define ASUS_FAN_CTRL_MANUAL 1
78 #define ASUS_FAN_CTRL_AUTO 2
80 #define ASUS_FAN_BOOST_MODE_NORMAL 0
81 #define ASUS_FAN_BOOST_MODE_OVERBOOST 1
82 #define ASUS_FAN_BOOST_MODE_OVERBOOST_MASK 0x01
83 #define ASUS_FAN_BOOST_MODE_SILENT 2
84 #define ASUS_FAN_BOOST_MODE_SILENT_MASK 0x02
85 #define ASUS_FAN_BOOST_MODES_MASK 0x03
87 #define ASUS_THROTTLE_THERMAL_POLICY_DEFAULT 0
88 #define ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST 1
89 #define ASUS_THROTTLE_THERMAL_POLICY_SILENT 2
91 #define USB_INTEL_XUSB2PR 0xD0
92 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
94 #define ASUS_ACPI_UID_ASUSWMI "ASUSWMI"
95 #define ASUS_ACPI_UID_ATK "ATK"
97 #define WMI_EVENT_QUEUE_SIZE 0x10
98 #define WMI_EVENT_QUEUE_END 0x1
99 #define WMI_EVENT_MASK 0xFFFF
100 /* The WMI hotkey event value is always the same. */
101 #define WMI_EVENT_VALUE_ATK 0xFF
103 #define WMI_EVENT_MASK 0xFFFF
105 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
107 static bool ashs_present(void)
110 while (ashs_ids[i]) {
111 if (acpi_dev_found(ashs_ids[i++]))
120 u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */
126 * Struct that's used for all methods called via AGFN. Naming is
127 * identically to the AML code.
130 u16 mfun; /* probably "Multi-function" to be called */
131 u16 sfun; /* probably "Sub-function" to be called */
132 u16 len; /* size of the hole struct, including subfunction fields */
133 u8 stas; /* not used by now */
134 u8 err; /* zero on success */
137 /* struct used for calling fan read and write methods */
138 struct agfn_fan_args {
139 struct agfn_args agfn; /* common fields */
140 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
141 u32 speed; /* read: RPM/100 - write: 0-255 */
145 * <platform>/ - debugfs root directory
146 * dev_id - current dev_id
147 * ctrl_param - current ctrl_param
148 * method_id - current method_id
149 * devs - call DEVS(dev_id, ctrl_param) and print result
150 * dsts - call DSTS(dev_id) and print result
151 * call - call method_id(dev_id, ctrl_param) and print result
153 struct asus_wmi_debug {
161 struct asus_wmi *asus;
162 struct rfkill *rfkill;
168 FAN_TYPE_AGFN, /* deprecated on newer platforms */
169 FAN_TYPE_SPEC83, /* starting in Spec 8.3, use CPU_FAN_CTRL */
176 bool wmi_event_queue;
178 struct input_dev *inputdev;
179 struct backlight_device *backlight_device;
180 struct platform_device *platform_device;
182 struct led_classdev wlan_led;
184 struct led_classdev tpd_led;
186 struct led_classdev kbd_led;
188 struct led_classdev lightbar_led;
190 struct workqueue_struct *led_workqueue;
191 struct work_struct tpd_led_work;
192 struct work_struct wlan_led_work;
193 struct work_struct lightbar_led_work;
195 struct asus_rfkill wlan;
196 struct asus_rfkill bluetooth;
197 struct asus_rfkill wimax;
198 struct asus_rfkill wwan3g;
199 struct asus_rfkill gps;
200 struct asus_rfkill uwb;
202 enum fan_type fan_type;
206 bool fan_boost_mode_available;
207 u8 fan_boost_mode_mask;
210 bool throttle_thermal_policy_available;
211 u8 throttle_thermal_policy_mode;
213 // The RSOC controls the maximum charging percentage.
214 bool battery_rsoc_available;
216 struct hotplug_slot hotplug_slot;
217 struct mutex hotplug_lock;
218 struct mutex wmi_lock;
219 struct workqueue_struct *hotplug_workqueue;
220 struct work_struct hotplug_work;
224 struct asus_wmi_debug debug;
226 struct asus_wmi_driver *driver;
229 /* WMI ************************************************************************/
231 static int asus_wmi_evaluate_method3(u32 method_id,
232 u32 arg0, u32 arg1, u32 arg2, u32 *retval)
234 struct bios_args args = {
239 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
240 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
242 union acpi_object *obj;
245 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 0, method_id,
248 if (ACPI_FAILURE(status))
251 obj = (union acpi_object *)output.pointer;
252 if (obj && obj->type == ACPI_TYPE_INTEGER)
253 tmp = (u32) obj->integer.value;
260 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
266 int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval)
268 return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval);
270 EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method);
272 static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
274 struct acpi_buffer input;
280 * Copy to dma capable address otherwise memory corruption occurs as
281 * bios has to be able to access it.
283 input.pointer = kmemdup(args.pointer, args.length, GFP_DMA | GFP_KERNEL);
284 input.length = args.length;
287 phys_addr = virt_to_phys(input.pointer);
289 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
290 phys_addr, 0, &retval);
292 memcpy(args.pointer, input.pointer, args.length);
294 kfree(input.pointer);
301 static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
303 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
306 static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
309 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
313 /* Helper for special devices with magic return codes */
314 static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
315 u32 dev_id, u32 mask)
320 err = asus_wmi_get_devstate(asus, dev_id, &retval);
324 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
327 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
328 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
332 return retval & mask;
335 static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
337 return asus_wmi_get_devstate_bits(asus, dev_id,
338 ASUS_WMI_DSTS_STATUS_BIT);
341 static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
344 int status = asus_wmi_get_devstate(asus, dev_id, &retval);
346 return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
349 /* Input **********************************************************************/
351 static int asus_wmi_input_init(struct asus_wmi *asus)
355 asus->inputdev = input_allocate_device();
359 asus->inputdev->name = asus->driver->input_name;
360 asus->inputdev->phys = asus->driver->input_phys;
361 asus->inputdev->id.bustype = BUS_HOST;
362 asus->inputdev->dev.parent = &asus->platform_device->dev;
363 set_bit(EV_REP, asus->inputdev->evbit);
365 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
369 if (asus->driver->quirks->use_kbd_dock_devid) {
370 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
372 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
373 input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
374 } else if (result != -ENODEV) {
375 pr_err("Error checking for keyboard-dock: %d\n", result);
379 if (asus->driver->quirks->use_lid_flip_devid) {
380 result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
382 asus->driver->quirks->use_lid_flip_devid = 0;
384 input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
385 input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
386 } else if (result == -ENODEV) {
387 pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug.");
389 pr_err("Error checking for lid-flip: %d\n", result);
393 err = input_register_device(asus->inputdev);
400 input_free_device(asus->inputdev);
404 static void asus_wmi_input_exit(struct asus_wmi *asus)
407 input_unregister_device(asus->inputdev);
409 asus->inputdev = NULL;
412 /* Tablet mode ****************************************************************/
414 static void lid_flip_tablet_mode_get_state(struct asus_wmi *asus)
416 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
419 input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
420 input_sync(asus->inputdev);
424 /* Battery ********************************************************************/
426 /* The battery maximum charging percentage */
427 static int charge_end_threshold;
429 static ssize_t charge_control_end_threshold_store(struct device *dev,
430 struct device_attribute *attr,
431 const char *buf, size_t count)
435 ret = kstrtouint(buf, 10, &value);
439 if (value < 0 || value > 100)
442 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
449 /* There isn't any method in the DSDT to read the threshold, so we
450 * save the threshold.
452 charge_end_threshold = value;
456 static ssize_t charge_control_end_threshold_show(struct device *device,
457 struct device_attribute *attr,
460 return sprintf(buf, "%d\n", charge_end_threshold);
463 static DEVICE_ATTR_RW(charge_control_end_threshold);
465 static int asus_wmi_battery_add(struct power_supply *battery)
467 /* The WMI method does not provide a way to specific a battery, so we
468 * just assume it is the first battery.
469 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first
470 * battery is named BATT.
472 if (strcmp(battery->desc->name, "BAT0") != 0 &&
473 strcmp(battery->desc->name, "BAT1") != 0 &&
474 strcmp(battery->desc->name, "BATC") != 0 &&
475 strcmp(battery->desc->name, "BATT") != 0)
478 if (device_create_file(&battery->dev,
479 &dev_attr_charge_control_end_threshold))
482 /* The charge threshold is only reset when the system is power cycled,
483 * and we can't get the current threshold so let set it to 100% when
484 * a battery is added.
486 asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
487 charge_end_threshold = 100;
492 static int asus_wmi_battery_remove(struct power_supply *battery)
494 device_remove_file(&battery->dev,
495 &dev_attr_charge_control_end_threshold);
499 static struct acpi_battery_hook battery_hook = {
500 .add_battery = asus_wmi_battery_add,
501 .remove_battery = asus_wmi_battery_remove,
502 .name = "ASUS Battery Extension",
505 static void asus_wmi_battery_init(struct asus_wmi *asus)
507 asus->battery_rsoc_available = false;
508 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
509 asus->battery_rsoc_available = true;
510 battery_hook_register(&battery_hook);
514 static void asus_wmi_battery_exit(struct asus_wmi *asus)
516 if (asus->battery_rsoc_available)
517 battery_hook_unregister(&battery_hook);
520 /* LEDs ***********************************************************************/
523 * These functions actually update the LED's, and are called from a
524 * workqueue. By doing this as separate work rather than when the LED
525 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
526 * potentially bad time, such as a timer interrupt.
528 static void tpd_led_update(struct work_struct *work)
531 struct asus_wmi *asus;
533 asus = container_of(work, struct asus_wmi, tpd_led_work);
535 ctrl_param = asus->tpd_led_wk;
536 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
539 static void tpd_led_set(struct led_classdev *led_cdev,
540 enum led_brightness value)
542 struct asus_wmi *asus;
544 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
546 asus->tpd_led_wk = !!value;
547 queue_work(asus->led_workqueue, &asus->tpd_led_work);
550 static int read_tpd_led_state(struct asus_wmi *asus)
552 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
555 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
557 struct asus_wmi *asus;
559 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
561 return read_tpd_led_state(asus);
564 static void kbd_led_update(struct asus_wmi *asus)
568 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
569 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
572 static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
578 * bit 7: light on/off
579 * bit 8-10: environment (0: dark, 1: normal, 2: light)
580 * bit 17: status unknown
582 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
585 /* Unknown status is considered as off */
586 if (retval == 0x8000)
593 *level = retval & 0x7F;
595 *env = (retval >> 8) & 0x7F;
599 static void do_kbd_led_set(struct led_classdev *led_cdev, int value)
601 struct asus_wmi *asus;
604 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
605 max_level = asus->kbd_led.max_brightness;
607 asus->kbd_led_wk = clamp_val(value, 0, max_level);
608 kbd_led_update(asus);
611 static void kbd_led_set(struct led_classdev *led_cdev,
612 enum led_brightness value)
614 /* Prevent disabling keyboard backlight on module unregister */
615 if (led_cdev->flags & LED_UNREGISTERING)
618 do_kbd_led_set(led_cdev, value);
621 static void kbd_led_set_by_kbd(struct asus_wmi *asus, enum led_brightness value)
623 struct led_classdev *led_cdev = &asus->kbd_led;
625 do_kbd_led_set(led_cdev, value);
626 led_classdev_notify_brightness_hw_changed(led_cdev, asus->kbd_led_wk);
629 static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
631 struct asus_wmi *asus;
634 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
636 retval = kbd_led_read(asus, &value, NULL);
643 static int wlan_led_unknown_state(struct asus_wmi *asus)
647 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
649 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
652 static void wlan_led_update(struct work_struct *work)
655 struct asus_wmi *asus;
657 asus = container_of(work, struct asus_wmi, wlan_led_work);
659 ctrl_param = asus->wlan_led_wk;
660 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
663 static void wlan_led_set(struct led_classdev *led_cdev,
664 enum led_brightness value)
666 struct asus_wmi *asus;
668 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
670 asus->wlan_led_wk = !!value;
671 queue_work(asus->led_workqueue, &asus->wlan_led_work);
674 static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
676 struct asus_wmi *asus;
679 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
680 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
682 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
685 static void lightbar_led_update(struct work_struct *work)
687 struct asus_wmi *asus;
690 asus = container_of(work, struct asus_wmi, lightbar_led_work);
692 ctrl_param = asus->lightbar_led_wk;
693 asus_wmi_set_devstate(ASUS_WMI_DEVID_LIGHTBAR, ctrl_param, NULL);
696 static void lightbar_led_set(struct led_classdev *led_cdev,
697 enum led_brightness value)
699 struct asus_wmi *asus;
701 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
703 asus->lightbar_led_wk = !!value;
704 queue_work(asus->led_workqueue, &asus->lightbar_led_work);
707 static enum led_brightness lightbar_led_get(struct led_classdev *led_cdev)
709 struct asus_wmi *asus;
712 asus = container_of(led_cdev, struct asus_wmi, lightbar_led);
713 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_LIGHTBAR, &result);
715 return result & ASUS_WMI_DSTS_LIGHTBAR_MASK;
718 static void asus_wmi_led_exit(struct asus_wmi *asus)
720 led_classdev_unregister(&asus->kbd_led);
721 led_classdev_unregister(&asus->tpd_led);
722 led_classdev_unregister(&asus->wlan_led);
723 led_classdev_unregister(&asus->lightbar_led);
725 if (asus->led_workqueue)
726 destroy_workqueue(asus->led_workqueue);
729 static int asus_wmi_led_init(struct asus_wmi *asus)
733 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
734 if (!asus->led_workqueue)
737 if (read_tpd_led_state(asus) >= 0) {
738 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
740 asus->tpd_led.name = "asus::touchpad";
741 asus->tpd_led.brightness_set = tpd_led_set;
742 asus->tpd_led.brightness_get = tpd_led_get;
743 asus->tpd_led.max_brightness = 1;
745 rv = led_classdev_register(&asus->platform_device->dev,
751 if (!kbd_led_read(asus, &led_val, NULL)) {
752 asus->kbd_led_wk = led_val;
753 asus->kbd_led.name = "asus::kbd_backlight";
754 asus->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
755 asus->kbd_led.brightness_set = kbd_led_set;
756 asus->kbd_led.brightness_get = kbd_led_get;
757 asus->kbd_led.max_brightness = 3;
759 rv = led_classdev_register(&asus->platform_device->dev,
765 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_WIRELESS_LED)
766 && (asus->driver->quirks->wapf > 0)) {
767 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
769 asus->wlan_led.name = "asus::wlan";
770 asus->wlan_led.brightness_set = wlan_led_set;
771 if (!wlan_led_unknown_state(asus))
772 asus->wlan_led.brightness_get = wlan_led_get;
773 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
774 asus->wlan_led.max_brightness = 1;
775 asus->wlan_led.default_trigger = "asus-wlan";
777 rv = led_classdev_register(&asus->platform_device->dev,
783 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_LIGHTBAR)) {
784 INIT_WORK(&asus->lightbar_led_work, lightbar_led_update);
786 asus->lightbar_led.name = "asus::lightbar";
787 asus->lightbar_led.brightness_set = lightbar_led_set;
788 asus->lightbar_led.brightness_get = lightbar_led_get;
789 asus->lightbar_led.max_brightness = 1;
791 rv = led_classdev_register(&asus->platform_device->dev,
792 &asus->lightbar_led);
797 asus_wmi_led_exit(asus);
802 /* RF *************************************************************************/
805 * PCI hotplug (for wlan rfkill)
807 static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
809 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
816 static void asus_rfkill_hotplug(struct asus_wmi *asus)
824 mutex_lock(&asus->wmi_lock);
825 blocked = asus_wlan_rfkill_blocked(asus);
826 mutex_unlock(&asus->wmi_lock);
828 mutex_lock(&asus->hotplug_lock);
829 pci_lock_rescan_remove();
831 if (asus->wlan.rfkill)
832 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
834 if (asus->hotplug_slot.ops) {
835 bus = pci_find_bus(0, 1);
837 pr_warn("Unable to find PCI bus 1?\n");
841 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
842 pr_err("Unable to read PCI config space?\n");
845 absent = (l == 0xffffffff);
847 if (blocked != absent) {
848 pr_warn("BIOS says wireless lan is %s, "
849 "but the pci device is %s\n",
850 blocked ? "blocked" : "unblocked",
851 absent ? "absent" : "present");
852 pr_warn("skipped wireless hotplug as probably "
853 "inappropriate for this model\n");
858 dev = pci_get_slot(bus, 0);
860 /* Device already present */
864 dev = pci_scan_single_device(bus, 0);
866 pci_bus_assign_resources(bus);
867 pci_bus_add_device(dev);
870 dev = pci_get_slot(bus, 0);
872 pci_stop_and_remove_bus_device(dev);
879 pci_unlock_rescan_remove();
880 mutex_unlock(&asus->hotplug_lock);
883 static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
885 struct asus_wmi *asus = data;
887 if (event != ACPI_NOTIFY_BUS_CHECK)
891 * We can't call directly asus_rfkill_hotplug because most
892 * of the time WMBC is still being executed and not reetrant.
893 * There is currently no way to tell ACPICA that we want this
894 * method to be serialized, we schedule a asus_rfkill_hotplug
895 * call later, in a safer context.
897 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
900 static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
905 status = acpi_get_handle(NULL, node, &handle);
906 if (ACPI_FAILURE(status))
909 status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
910 asus_rfkill_notify, asus);
911 if (ACPI_FAILURE(status))
912 pr_warn("Failed to register notify on %s\n", node);
917 static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
919 acpi_status status = AE_OK;
922 status = acpi_get_handle(NULL, node, &handle);
923 if (ACPI_FAILURE(status))
926 status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
928 if (ACPI_FAILURE(status))
929 pr_err("Error removing rfkill notify handler %s\n", node);
932 static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
935 struct asus_wmi *asus = container_of(hotplug_slot,
936 struct asus_wmi, hotplug_slot);
937 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
946 static const struct hotplug_slot_ops asus_hotplug_slot_ops = {
947 .get_adapter_status = asus_get_adapter_status,
948 .get_power_status = asus_get_adapter_status,
951 static void asus_hotplug_work(struct work_struct *work)
953 struct asus_wmi *asus;
955 asus = container_of(work, struct asus_wmi, hotplug_work);
956 asus_rfkill_hotplug(asus);
959 static int asus_setup_pci_hotplug(struct asus_wmi *asus)
962 struct pci_bus *bus = pci_find_bus(0, 1);
965 pr_err("Unable to find wifi PCI bus\n");
969 asus->hotplug_workqueue =
970 create_singlethread_workqueue("hotplug_workqueue");
971 if (!asus->hotplug_workqueue)
972 goto error_workqueue;
974 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
976 asus->hotplug_slot.ops = &asus_hotplug_slot_ops;
978 ret = pci_hp_register(&asus->hotplug_slot, bus, 0, "asus-wifi");
980 pr_err("Unable to register hotplug slot - %d\n", ret);
987 asus->hotplug_slot.ops = NULL;
988 destroy_workqueue(asus->hotplug_workqueue);
996 static int asus_rfkill_set(void *data, bool blocked)
998 struct asus_rfkill *priv = data;
999 u32 ctrl_param = !blocked;
1000 u32 dev_id = priv->dev_id;
1003 * If the user bit is set, BIOS can't set and record the wlan status,
1004 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
1005 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
1006 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
1007 * while setting the wlan status through WMI.
1008 * This is also the behavior that windows app will do.
1010 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1011 priv->asus->driver->wlan_ctrl_by_user)
1012 dev_id = ASUS_WMI_DEVID_WLAN_LED;
1014 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
1017 static void asus_rfkill_query(struct rfkill *rfkill, void *data)
1019 struct asus_rfkill *priv = data;
1022 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
1027 rfkill_set_sw_state(priv->rfkill, !result);
1030 static int asus_rfkill_wlan_set(void *data, bool blocked)
1032 struct asus_rfkill *priv = data;
1033 struct asus_wmi *asus = priv->asus;
1037 * This handler is enabled only if hotplug is enabled.
1038 * In this case, the asus_wmi_set_devstate() will
1039 * trigger a wmi notification and we need to wait
1040 * this call to finish before being able to call
1043 mutex_lock(&asus->wmi_lock);
1044 ret = asus_rfkill_set(data, blocked);
1045 mutex_unlock(&asus->wmi_lock);
1049 static const struct rfkill_ops asus_rfkill_wlan_ops = {
1050 .set_block = asus_rfkill_wlan_set,
1051 .query = asus_rfkill_query,
1054 static const struct rfkill_ops asus_rfkill_ops = {
1055 .set_block = asus_rfkill_set,
1056 .query = asus_rfkill_query,
1059 static int asus_new_rfkill(struct asus_wmi *asus,
1060 struct asus_rfkill *arfkill,
1061 const char *name, enum rfkill_type type, int dev_id)
1063 int result = asus_wmi_get_devstate_simple(asus, dev_id);
1064 struct rfkill **rfkill = &arfkill->rfkill;
1069 arfkill->dev_id = dev_id;
1070 arfkill->asus = asus;
1072 if (dev_id == ASUS_WMI_DEVID_WLAN &&
1073 asus->driver->quirks->hotplug_wireless)
1074 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1075 &asus_rfkill_wlan_ops, arfkill);
1077 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
1078 &asus_rfkill_ops, arfkill);
1083 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
1084 (asus->driver->quirks->wapf > 0))
1085 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
1087 rfkill_init_sw_state(*rfkill, !result);
1088 result = rfkill_register(*rfkill);
1090 rfkill_destroy(*rfkill);
1097 static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
1099 if (asus->driver->wlan_ctrl_by_user && ashs_present())
1102 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1103 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1104 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1105 if (asus->wlan.rfkill) {
1106 rfkill_unregister(asus->wlan.rfkill);
1107 rfkill_destroy(asus->wlan.rfkill);
1108 asus->wlan.rfkill = NULL;
1111 * Refresh pci hotplug in case the rfkill state was changed after
1112 * asus_unregister_rfkill_notifier()
1114 asus_rfkill_hotplug(asus);
1115 if (asus->hotplug_slot.ops)
1116 pci_hp_deregister(&asus->hotplug_slot);
1117 if (asus->hotplug_workqueue)
1118 destroy_workqueue(asus->hotplug_workqueue);
1120 if (asus->bluetooth.rfkill) {
1121 rfkill_unregister(asus->bluetooth.rfkill);
1122 rfkill_destroy(asus->bluetooth.rfkill);
1123 asus->bluetooth.rfkill = NULL;
1125 if (asus->wimax.rfkill) {
1126 rfkill_unregister(asus->wimax.rfkill);
1127 rfkill_destroy(asus->wimax.rfkill);
1128 asus->wimax.rfkill = NULL;
1130 if (asus->wwan3g.rfkill) {
1131 rfkill_unregister(asus->wwan3g.rfkill);
1132 rfkill_destroy(asus->wwan3g.rfkill);
1133 asus->wwan3g.rfkill = NULL;
1135 if (asus->gps.rfkill) {
1136 rfkill_unregister(asus->gps.rfkill);
1137 rfkill_destroy(asus->gps.rfkill);
1138 asus->gps.rfkill = NULL;
1140 if (asus->uwb.rfkill) {
1141 rfkill_unregister(asus->uwb.rfkill);
1142 rfkill_destroy(asus->uwb.rfkill);
1143 asus->uwb.rfkill = NULL;
1147 static int asus_wmi_rfkill_init(struct asus_wmi *asus)
1151 mutex_init(&asus->hotplug_lock);
1152 mutex_init(&asus->wmi_lock);
1154 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1155 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
1157 if (result && result != -ENODEV)
1160 result = asus_new_rfkill(asus, &asus->bluetooth,
1161 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1162 ASUS_WMI_DEVID_BLUETOOTH);
1164 if (result && result != -ENODEV)
1167 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1168 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
1170 if (result && result != -ENODEV)
1173 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1174 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
1176 if (result && result != -ENODEV)
1179 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1180 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1182 if (result && result != -ENODEV)
1185 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1186 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1188 if (result && result != -ENODEV)
1191 if (!asus->driver->quirks->hotplug_wireless)
1194 result = asus_setup_pci_hotplug(asus);
1196 * If we get -EBUSY then something else is handling the PCI hotplug -
1197 * don't fail in this case
1199 if (result == -EBUSY)
1202 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1203 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1204 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
1206 * Refresh pci hotplug in case the rfkill state was changed during
1209 asus_rfkill_hotplug(asus);
1212 if (result && result != -ENODEV)
1213 asus_wmi_rfkill_exit(asus);
1215 if (result == -ENODEV)
1221 /* Quirks *********************************************************************/
1223 static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
1225 struct pci_dev *xhci_pdev;
1226 u32 orig_ports_available;
1227 u32 ports_available = asus->driver->quirks->xusb2pr;
1229 xhci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
1230 PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI,
1236 pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1237 &orig_ports_available);
1239 pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
1240 cpu_to_le32(ports_available));
1242 pr_info("set USB_INTEL_XUSB2PR old: 0x%04x, new: 0x%04x\n",
1243 orig_ports_available, ports_available);
1247 * Some devices dont support or have borcken get_als method
1248 * but still support set method.
1250 static void asus_wmi_set_als(void)
1252 asus_wmi_set_devstate(ASUS_WMI_DEVID_ALS_ENABLE, 1, NULL);
1255 /* Hwmon device ***************************************************************/
1257 static int asus_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1260 struct agfn_fan_args args = {
1261 .agfn.len = sizeof(args),
1262 .agfn.mfun = ASUS_FAN_MFUN,
1263 .agfn.sfun = ASUS_FAN_SFUN_READ,
1267 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1273 status = asus_wmi_evaluate_method_agfn(input);
1275 if (status || args.agfn.err)
1279 *speed = args.speed;
1284 static int asus_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1287 struct agfn_fan_args args = {
1288 .agfn.len = sizeof(args),
1289 .agfn.mfun = ASUS_FAN_MFUN,
1290 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1292 .speed = speed ? *speed : 0,
1294 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1297 /* 1: for setting 1st fan's speed 0: setting auto mode */
1298 if (fan != 1 && fan != 0)
1301 status = asus_wmi_evaluate_method_agfn(input);
1303 if (status || args.agfn.err)
1306 if (speed && fan == 1)
1307 asus->agfn_pwm = *speed;
1313 * Check if we can read the speed of one fan. If true we assume we can also
1316 static bool asus_wmi_has_agfn_fan(struct asus_wmi *asus)
1322 status = asus_agfn_fan_speed_read(asus, 1, &speed);
1326 status = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1331 * We need to find a better way, probably using sfun,
1333 * Currently we disable it if:
1334 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1335 * - reverved bits are non-zero
1336 * - sfun and presence bit are not set
1338 return !(value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
1339 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)));
1342 static int asus_fan_set_auto(struct asus_wmi *asus)
1347 switch (asus->fan_type) {
1348 case FAN_TYPE_SPEC83:
1349 status = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1359 status = asus_agfn_fan_speed_write(asus, 0, NULL);
1372 static ssize_t pwm1_show(struct device *dev,
1373 struct device_attribute *attr,
1376 struct asus_wmi *asus = dev_get_drvdata(dev);
1380 /* If we already set a value then just return it */
1381 if (asus->agfn_pwm >= 0)
1382 return sprintf(buf, "%d\n", asus->agfn_pwm);
1385 * If we haven't set already set a value through the AGFN interface,
1386 * we read a current value through the (now-deprecated) FAN_CTRL device.
1388 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
1394 if (value == 1) /* Low Speed */
1396 else if (value == 2)
1398 else if (value == 3)
1401 pr_err("Unknown fan speed %#x\n", value);
1405 return sprintf(buf, "%d\n", value);
1408 static ssize_t pwm1_store(struct device *dev,
1409 struct device_attribute *attr,
1410 const char *buf, size_t count) {
1411 struct asus_wmi *asus = dev_get_drvdata(dev);
1416 ret = kstrtouint(buf, 10, &value);
1420 value = clamp(value, 0, 255);
1422 state = asus_agfn_fan_speed_write(asus, 1, &value);
1424 pr_warn("Setting fan speed failed: %d\n", state);
1426 asus->fan_pwm_mode = ASUS_FAN_CTRL_MANUAL;
1431 static ssize_t fan1_input_show(struct device *dev,
1432 struct device_attribute *attr,
1435 struct asus_wmi *asus = dev_get_drvdata(dev);
1439 switch (asus->fan_type) {
1440 case FAN_TYPE_SPEC83:
1441 ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL,
1450 /* no speed readable on manual mode */
1451 if (asus->fan_pwm_mode == ASUS_FAN_CTRL_MANUAL)
1454 ret = asus_agfn_fan_speed_read(asus, 1, &value);
1456 pr_warn("reading fan speed failed: %d\n", ret);
1465 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1468 static ssize_t pwm1_enable_show(struct device *dev,
1469 struct device_attribute *attr,
1472 struct asus_wmi *asus = dev_get_drvdata(dev);
1475 * Just read back the cached pwm mode.
1477 * For the CPU_FAN device, the spec indicates that we should be
1478 * able to read the device status and consult bit 19 to see if we
1479 * are in Full On or Automatic mode. However, this does not work
1480 * in practice on X532FL at least (the bit is always 0) and there's
1481 * also nothing in the DSDT to indicate that this behaviour exists.
1483 return sprintf(buf, "%d\n", asus->fan_pwm_mode);
1486 static ssize_t pwm1_enable_store(struct device *dev,
1487 struct device_attribute *attr,
1488 const char *buf, size_t count)
1490 struct asus_wmi *asus = dev_get_drvdata(dev);
1497 ret = kstrtouint(buf, 10, &state);
1501 if (asus->fan_type == FAN_TYPE_SPEC83) {
1502 switch (state) { /* standard documented hwmon values */
1503 case ASUS_FAN_CTRL_FULLSPEED:
1506 case ASUS_FAN_CTRL_AUTO:
1513 ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_CPU_FAN_CTRL,
1520 } else if (asus->fan_type == FAN_TYPE_AGFN) {
1522 case ASUS_FAN_CTRL_MANUAL:
1525 case ASUS_FAN_CTRL_AUTO:
1526 status = asus_fan_set_auto(asus);
1536 asus->fan_pwm_mode = state;
1540 static ssize_t fan1_label_show(struct device *dev,
1541 struct device_attribute *attr,
1544 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1547 static ssize_t asus_hwmon_temp1(struct device *dev,
1548 struct device_attribute *attr,
1551 struct asus_wmi *asus = dev_get_drvdata(dev);
1555 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1559 return sprintf(buf, "%ld\n",
1560 deci_kelvin_to_millicelsius(value & 0xFFFF));
1564 static DEVICE_ATTR_RW(pwm1);
1565 static DEVICE_ATTR_RW(pwm1_enable);
1566 static DEVICE_ATTR_RO(fan1_input);
1567 static DEVICE_ATTR_RO(fan1_label);
1570 static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
1572 static struct attribute *hwmon_attributes[] = {
1573 &dev_attr_pwm1.attr,
1574 &dev_attr_pwm1_enable.attr,
1575 &dev_attr_fan1_input.attr,
1576 &dev_attr_fan1_label.attr,
1578 &dev_attr_temp1_input.attr,
1582 static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
1583 struct attribute *attr, int idx)
1585 struct device *dev = container_of(kobj, struct device, kobj);
1586 struct asus_wmi *asus = dev_get_drvdata(dev->parent);
1587 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
1589 if (attr == &dev_attr_pwm1.attr) {
1590 if (asus->fan_type != FAN_TYPE_AGFN)
1592 } else if (attr == &dev_attr_fan1_input.attr
1593 || attr == &dev_attr_fan1_label.attr
1594 || attr == &dev_attr_pwm1_enable.attr) {
1595 if (asus->fan_type == FAN_TYPE_NONE)
1597 } else if (attr == &dev_attr_temp1_input.attr) {
1598 int err = asus_wmi_get_devstate(asus,
1599 ASUS_WMI_DEVID_THERMAL_CTRL,
1603 return 0; /* can't return negative here */
1606 * If the temperature value in deci-Kelvin is near the absolute
1607 * zero temperature, something is clearly wrong
1609 if (value == 0 || value == 1)
1616 static const struct attribute_group hwmon_attribute_group = {
1617 .is_visible = asus_hwmon_sysfs_is_visible,
1618 .attrs = hwmon_attributes
1620 __ATTRIBUTE_GROUPS(hwmon_attribute);
1622 static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1624 struct device *dev = &asus->platform_device->dev;
1625 struct device *hwmon;
1627 hwmon = devm_hwmon_device_register_with_groups(dev, "asus", asus,
1628 hwmon_attribute_groups);
1630 if (IS_ERR(hwmon)) {
1631 pr_err("Could not register asus hwmon device\n");
1632 return PTR_ERR(hwmon);
1637 static int asus_wmi_fan_init(struct asus_wmi *asus)
1639 asus->fan_type = FAN_TYPE_NONE;
1640 asus->agfn_pwm = -1;
1642 if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CPU_FAN_CTRL))
1643 asus->fan_type = FAN_TYPE_SPEC83;
1644 else if (asus_wmi_has_agfn_fan(asus))
1645 asus->fan_type = FAN_TYPE_AGFN;
1647 if (asus->fan_type == FAN_TYPE_NONE)
1650 asus_fan_set_auto(asus);
1651 asus->fan_pwm_mode = ASUS_FAN_CTRL_AUTO;
1655 /* Fan mode *******************************************************************/
1657 static int fan_boost_mode_check_present(struct asus_wmi *asus)
1662 asus->fan_boost_mode_available = false;
1664 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_BOOST_MODE,
1673 if ((result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
1674 (result & ASUS_FAN_BOOST_MODES_MASK)) {
1675 asus->fan_boost_mode_available = true;
1676 asus->fan_boost_mode_mask = result & ASUS_FAN_BOOST_MODES_MASK;
1682 static int fan_boost_mode_write(struct asus_wmi *asus)
1688 value = asus->fan_boost_mode;
1690 pr_info("Set fan boost mode: %u\n", value);
1691 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_FAN_BOOST_MODE, value,
1694 pr_warn("Failed to set fan boost mode: %d\n", err);
1699 pr_warn("Failed to set fan boost mode (retval): 0x%x\n",
1707 static int fan_boost_mode_switch_next(struct asus_wmi *asus)
1709 u8 mask = asus->fan_boost_mode_mask;
1711 if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_NORMAL) {
1712 if (mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK)
1713 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_OVERBOOST;
1714 else if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1715 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1716 } else if (asus->fan_boost_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1717 if (mask & ASUS_FAN_BOOST_MODE_SILENT_MASK)
1718 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_SILENT;
1720 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1722 asus->fan_boost_mode = ASUS_FAN_BOOST_MODE_NORMAL;
1725 return fan_boost_mode_write(asus);
1728 static ssize_t fan_boost_mode_show(struct device *dev,
1729 struct device_attribute *attr, char *buf)
1731 struct asus_wmi *asus = dev_get_drvdata(dev);
1733 return scnprintf(buf, PAGE_SIZE, "%d\n", asus->fan_boost_mode);
1736 static ssize_t fan_boost_mode_store(struct device *dev,
1737 struct device_attribute *attr,
1738 const char *buf, size_t count)
1742 struct asus_wmi *asus = dev_get_drvdata(dev);
1743 u8 mask = asus->fan_boost_mode_mask;
1745 result = kstrtou8(buf, 10, &new_mode);
1747 pr_warn("Trying to store invalid value\n");
1751 if (new_mode == ASUS_FAN_BOOST_MODE_OVERBOOST) {
1752 if (!(mask & ASUS_FAN_BOOST_MODE_OVERBOOST_MASK))
1754 } else if (new_mode == ASUS_FAN_BOOST_MODE_SILENT) {
1755 if (!(mask & ASUS_FAN_BOOST_MODE_SILENT_MASK))
1757 } else if (new_mode != ASUS_FAN_BOOST_MODE_NORMAL) {
1761 asus->fan_boost_mode = new_mode;
1762 fan_boost_mode_write(asus);
1767 // Fan boost mode: 0 - normal, 1 - overboost, 2 - silent
1768 static DEVICE_ATTR_RW(fan_boost_mode);
1770 /* Throttle thermal policy ****************************************************/
1772 static int throttle_thermal_policy_check_present(struct asus_wmi *asus)
1777 asus->throttle_thermal_policy_available = false;
1779 err = asus_wmi_get_devstate(asus,
1780 ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1788 if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
1789 asus->throttle_thermal_policy_available = true;
1794 static int throttle_thermal_policy_write(struct asus_wmi *asus)
1800 value = asus->throttle_thermal_policy_mode;
1802 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY,
1805 pr_warn("Failed to set throttle thermal policy: %d\n", err);
1810 pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
1818 static int throttle_thermal_policy_set_default(struct asus_wmi *asus)
1820 if (!asus->throttle_thermal_policy_available)
1823 asus->throttle_thermal_policy_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1824 return throttle_thermal_policy_write(asus);
1827 static int throttle_thermal_policy_switch_next(struct asus_wmi *asus)
1829 u8 new_mode = asus->throttle_thermal_policy_mode + 1;
1831 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1832 new_mode = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
1834 asus->throttle_thermal_policy_mode = new_mode;
1835 return throttle_thermal_policy_write(asus);
1838 static ssize_t throttle_thermal_policy_show(struct device *dev,
1839 struct device_attribute *attr, char *buf)
1841 struct asus_wmi *asus = dev_get_drvdata(dev);
1842 u8 mode = asus->throttle_thermal_policy_mode;
1844 return scnprintf(buf, PAGE_SIZE, "%d\n", mode);
1847 static ssize_t throttle_thermal_policy_store(struct device *dev,
1848 struct device_attribute *attr,
1849 const char *buf, size_t count)
1853 struct asus_wmi *asus = dev_get_drvdata(dev);
1855 result = kstrtou8(buf, 10, &new_mode);
1859 if (new_mode > ASUS_THROTTLE_THERMAL_POLICY_SILENT)
1862 asus->throttle_thermal_policy_mode = new_mode;
1863 throttle_thermal_policy_write(asus);
1868 // Throttle thermal policy: 0 - default, 1 - overboost, 2 - silent
1869 static DEVICE_ATTR_RW(throttle_thermal_policy);
1871 /* Backlight ******************************************************************/
1873 static int read_backlight_power(struct asus_wmi *asus)
1877 if (asus->driver->quirks->store_backlight_power)
1878 ret = !asus->driver->panel_power;
1880 ret = asus_wmi_get_devstate_simple(asus,
1881 ASUS_WMI_DEVID_BACKLIGHT);
1886 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1889 static int read_brightness_max(struct asus_wmi *asus)
1894 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1898 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1907 static int read_brightness(struct backlight_device *bd)
1909 struct asus_wmi *asus = bl_get_data(bd);
1913 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1917 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
1920 static u32 get_scalar_command(struct backlight_device *bd)
1922 struct asus_wmi *asus = bl_get_data(bd);
1925 if ((asus->driver->brightness < bd->props.brightness) ||
1926 bd->props.brightness == bd->props.max_brightness)
1927 ctrl_param = 0x00008001;
1928 else if ((asus->driver->brightness > bd->props.brightness) ||
1929 bd->props.brightness == 0)
1930 ctrl_param = 0x00008000;
1932 asus->driver->brightness = bd->props.brightness;
1937 static int update_bl_status(struct backlight_device *bd)
1939 struct asus_wmi *asus = bl_get_data(bd);
1943 power = read_backlight_power(asus);
1944 if (power != -ENODEV && bd->props.power != power) {
1945 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
1946 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1948 if (asus->driver->quirks->store_backlight_power)
1949 asus->driver->panel_power = bd->props.power;
1951 /* When using scalar brightness, updating the brightness
1952 * will mess with the backlight power */
1953 if (asus->driver->quirks->scalar_panel_brightness)
1957 if (asus->driver->quirks->scalar_panel_brightness)
1958 ctrl_param = get_scalar_command(bd);
1960 ctrl_param = bd->props.brightness;
1962 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1968 static const struct backlight_ops asus_wmi_bl_ops = {
1969 .get_brightness = read_brightness,
1970 .update_status = update_bl_status,
1973 static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
1975 struct backlight_device *bd = asus->backlight_device;
1976 int old = bd->props.brightness;
1979 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1980 new = code - NOTIFY_BRNUP_MIN + 1;
1981 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1982 new = code - NOTIFY_BRNDOWN_MIN;
1984 bd->props.brightness = new;
1985 backlight_update_status(bd);
1986 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1991 static int asus_wmi_backlight_init(struct asus_wmi *asus)
1993 struct backlight_device *bd;
1994 struct backlight_properties props;
1998 max = read_brightness_max(asus);
2002 power = read_backlight_power(asus);
2003 if (power == -ENODEV)
2004 power = FB_BLANK_UNBLANK;
2008 memset(&props, 0, sizeof(struct backlight_properties));
2009 props.type = BACKLIGHT_PLATFORM;
2010 props.max_brightness = max;
2011 bd = backlight_device_register(asus->driver->name,
2012 &asus->platform_device->dev, asus,
2013 &asus_wmi_bl_ops, &props);
2015 pr_err("Could not register backlight device\n");
2019 asus->backlight_device = bd;
2021 if (asus->driver->quirks->store_backlight_power)
2022 asus->driver->panel_power = power;
2024 bd->props.brightness = read_brightness(bd);
2025 bd->props.power = power;
2026 backlight_update_status(bd);
2028 asus->driver->brightness = bd->props.brightness;
2033 static void asus_wmi_backlight_exit(struct asus_wmi *asus)
2035 backlight_device_unregister(asus->backlight_device);
2037 asus->backlight_device = NULL;
2040 static int is_display_toggle(int code)
2042 /* display toggle keys */
2043 if ((code >= 0x61 && code <= 0x67) ||
2044 (code >= 0x8c && code <= 0x93) ||
2045 (code >= 0xa0 && code <= 0xa7) ||
2046 (code >= 0xd0 && code <= 0xd5))
2052 /* Fn-lock ********************************************************************/
2054 static bool asus_wmi_has_fnlock_key(struct asus_wmi *asus)
2058 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FNLOCK, &result);
2060 return (result & ASUS_WMI_DSTS_PRESENCE_BIT) &&
2061 !(result & ASUS_WMI_FNLOCK_BIOS_DISABLED);
2064 static void asus_wmi_fnlock_update(struct asus_wmi *asus)
2066 int mode = asus->fnlock_locked;
2068 asus_wmi_set_devstate(ASUS_WMI_DEVID_FNLOCK, mode, NULL);
2071 /* WMI events *****************************************************************/
2073 static int asus_wmi_get_event_code(u32 value)
2075 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
2076 union acpi_object *obj;
2080 status = wmi_get_event_data(value, &response);
2081 if (ACPI_FAILURE(status)) {
2082 pr_warn("Failed to get WMI notify code: %s\n",
2083 acpi_format_exception(status));
2087 obj = (union acpi_object *)response.pointer;
2089 if (obj && obj->type == ACPI_TYPE_INTEGER)
2090 code = (int)(obj->integer.value & WMI_EVENT_MASK);
2098 static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
2100 unsigned int key_value = 1;
2101 bool autorelease = 1;
2102 int result, orig_code;
2106 if (asus->driver->key_filter) {
2107 asus->driver->key_filter(asus->driver, &code, &key_value,
2109 if (code == ASUS_WMI_KEY_IGNORE)
2113 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
2114 code = ASUS_WMI_BRN_UP;
2115 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
2116 code = ASUS_WMI_BRN_DOWN;
2118 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
2119 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2120 asus_wmi_backlight_notify(asus, orig_code);
2125 if (code == NOTIFY_KBD_BRTUP) {
2126 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2129 if (code == NOTIFY_KBD_BRTDWN) {
2130 kbd_led_set_by_kbd(asus, asus->kbd_led_wk - 1);
2133 if (code == NOTIFY_KBD_BRTTOGGLE) {
2134 if (asus->kbd_led_wk == asus->kbd_led.max_brightness)
2135 kbd_led_set_by_kbd(asus, 0);
2137 kbd_led_set_by_kbd(asus, asus->kbd_led_wk + 1);
2141 if (code == NOTIFY_FNLOCK_TOGGLE) {
2142 asus->fnlock_locked = !asus->fnlock_locked;
2143 asus_wmi_fnlock_update(asus);
2147 if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) {
2148 result = asus_wmi_get_devstate_simple(asus,
2149 ASUS_WMI_DEVID_KBD_DOCK);
2151 input_report_switch(asus->inputdev, SW_TABLET_MODE,
2153 input_sync(asus->inputdev);
2158 if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) {
2159 lid_flip_tablet_mode_get_state(asus);
2163 if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
2164 fan_boost_mode_switch_next(asus);
2168 if (asus->throttle_thermal_policy_available && code == NOTIFY_KBD_TTP) {
2169 throttle_thermal_policy_switch_next(asus);
2173 if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle)
2176 if (!sparse_keymap_report_event(asus->inputdev, code,
2177 key_value, autorelease))
2178 pr_info("Unknown key %x pressed\n", code);
2181 static void asus_wmi_notify(u32 value, void *context)
2183 struct asus_wmi *asus = context;
2187 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2188 code = asus_wmi_get_event_code(value);
2190 pr_warn("Failed to get notify code: %d\n", code);
2194 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2197 asus_wmi_handle_event_code(code, asus);
2200 * Double check that queue is present:
2201 * ATK (with queue) uses 0xff, ASUSWMI (without) 0xd2.
2203 if (!asus->wmi_event_queue || value != WMI_EVENT_VALUE_ATK)
2207 pr_warn("Failed to process event queue, last code: 0x%x\n", code);
2210 static int asus_wmi_notify_queue_flush(struct asus_wmi *asus)
2215 for (i = 0; i < WMI_EVENT_QUEUE_SIZE + 1; i++) {
2216 code = asus_wmi_get_event_code(WMI_EVENT_VALUE_ATK);
2218 pr_warn("Failed to get event during flush: %d\n", code);
2222 if (code == WMI_EVENT_QUEUE_END || code == WMI_EVENT_MASK)
2226 pr_warn("Failed to flush event queue\n");
2230 /* Sysfs **********************************************************************/
2232 static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
2233 const char *buf, size_t count)
2238 value = asus_wmi_get_devstate_simple(asus, devid);
2242 err = kstrtoint(buf, 0, &value);
2246 err = asus_wmi_set_devstate(devid, value, &retval);
2253 static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
2255 int value = asus_wmi_get_devstate_simple(asus, devid);
2260 return sprintf(buf, "%d\n", value);
2263 #define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
2264 static ssize_t show_##_name(struct device *dev, \
2265 struct device_attribute *attr, \
2268 struct asus_wmi *asus = dev_get_drvdata(dev); \
2270 return show_sys_wmi(asus, _cm, buf); \
2272 static ssize_t store_##_name(struct device *dev, \
2273 struct device_attribute *attr, \
2274 const char *buf, size_t count) \
2276 struct asus_wmi *asus = dev_get_drvdata(dev); \
2278 return store_sys_wmi(asus, _cm, buf, count); \
2280 static struct device_attribute dev_attr_##_name = { \
2282 .name = __stringify(_name), \
2284 .show = show_##_name, \
2285 .store = store_##_name, \
2288 ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
2289 ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
2290 ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
2291 ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
2292 ASUS_WMI_CREATE_DEVICE_ATTR(als_enable, 0644, ASUS_WMI_DEVID_ALS_ENABLE);
2294 static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
2295 const char *buf, size_t count)
2299 rv = kstrtoint(buf, 0, &value);
2303 if (value < 0 || value > 2)
2306 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
2313 static DEVICE_ATTR_WO(cpufv);
2315 static struct attribute *platform_attributes[] = {
2316 &dev_attr_cpufv.attr,
2317 &dev_attr_camera.attr,
2318 &dev_attr_cardr.attr,
2319 &dev_attr_touchpad.attr,
2320 &dev_attr_lid_resume.attr,
2321 &dev_attr_als_enable.attr,
2322 &dev_attr_fan_boost_mode.attr,
2323 &dev_attr_throttle_thermal_policy.attr,
2327 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
2328 struct attribute *attr, int idx)
2330 struct device *dev = container_of(kobj, struct device, kobj);
2331 struct asus_wmi *asus = dev_get_drvdata(dev);
2335 if (attr == &dev_attr_camera.attr)
2336 devid = ASUS_WMI_DEVID_CAMERA;
2337 else if (attr == &dev_attr_cardr.attr)
2338 devid = ASUS_WMI_DEVID_CARDREADER;
2339 else if (attr == &dev_attr_touchpad.attr)
2340 devid = ASUS_WMI_DEVID_TOUCHPAD;
2341 else if (attr == &dev_attr_lid_resume.attr)
2342 devid = ASUS_WMI_DEVID_LID_RESUME;
2343 else if (attr == &dev_attr_als_enable.attr)
2344 devid = ASUS_WMI_DEVID_ALS_ENABLE;
2345 else if (attr == &dev_attr_fan_boost_mode.attr)
2346 ok = asus->fan_boost_mode_available;
2347 else if (attr == &dev_attr_throttle_thermal_policy.attr)
2348 ok = asus->throttle_thermal_policy_available;
2351 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
2353 return ok ? attr->mode : 0;
2356 static const struct attribute_group platform_attribute_group = {
2357 .is_visible = asus_sysfs_is_visible,
2358 .attrs = platform_attributes
2361 static void asus_wmi_sysfs_exit(struct platform_device *device)
2363 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
2366 static int asus_wmi_sysfs_init(struct platform_device *device)
2368 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
2371 /* Platform device ************************************************************/
2373 static int asus_wmi_platform_init(struct asus_wmi *asus)
2375 struct device *dev = &asus->platform_device->dev;
2379 /* INIT enable hotkeys on some models */
2380 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
2381 pr_info("Initialization: %#x\n", rv);
2383 /* We don't know yet what to do with this version... */
2384 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
2385 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
2390 * The SFUN method probably allows the original driver to get the list
2391 * of features supported by a given model. For now, 0x0100 or 0x0800
2392 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
2393 * The significance of others is yet to be found.
2395 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
2396 pr_info("SFUN value: %#x\n", rv);
2401 * Eee PC and Notebooks seems to have different method_id for DSTS,
2402 * but it may also be related to the BIOS's SPEC.
2403 * Note, on most Eeepc, there is no way to check if a method exist
2404 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
2405 * but once again, SPEC may probably be used for that kind of things.
2407 * Additionally at least TUF Gaming series laptops return nothing for
2408 * unknown methods, so the detection in this way is not possible.
2410 * There is strong indication that only ACPI WMI devices that have _UID
2411 * equal to "ASUSWMI" use DCTS whereas those with "ATK" use DSTS.
2413 wmi_uid = wmi_get_acpi_device_uid(ASUS_WMI_MGMT_GUID);
2417 if (!strcmp(wmi_uid, ASUS_ACPI_UID_ASUSWMI)) {
2418 dev_info(dev, "Detected ASUSWMI, use DCTS\n");
2419 asus->dsts_id = ASUS_WMI_METHODID_DCTS;
2421 dev_info(dev, "Detected %s, not ASUSWMI, use DSTS\n", wmi_uid);
2422 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
2426 * Some devices can have multiple event codes stored in a queue before
2427 * the module load if it was unloaded intermittently after calling
2428 * the INIT method (enables event handling). The WMI notify handler is
2429 * expected to retrieve all event codes until a retrieved code equals
2430 * queue end marker (One or Ones). Old codes are flushed from the queue
2431 * upon module load. Not enabling this when it should be has minimal
2432 * visible impact so fall back if anything goes wrong.
2434 wmi_uid = wmi_get_acpi_device_uid(asus->driver->event_guid);
2435 if (wmi_uid && !strcmp(wmi_uid, ASUS_ACPI_UID_ATK)) {
2436 dev_info(dev, "Detected ATK, enable event queue\n");
2438 if (!asus_wmi_notify_queue_flush(asus))
2439 asus->wmi_event_queue = true;
2442 /* CWAP allow to define the behavior of the Fn+F2 key,
2443 * this method doesn't seems to be present on Eee PCs */
2444 if (asus->driver->quirks->wapf >= 0)
2445 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
2446 asus->driver->quirks->wapf, NULL);
2451 /* debugfs ********************************************************************/
2453 struct asus_wmi_debugfs_node {
2454 struct asus_wmi *asus;
2456 int (*show) (struct seq_file *m, void *data);
2459 static int show_dsts(struct seq_file *m, void *data)
2461 struct asus_wmi *asus = m->private;
2465 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
2469 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
2474 static int show_devs(struct seq_file *m, void *data)
2476 struct asus_wmi *asus = m->private;
2480 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
2485 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
2486 asus->debug.ctrl_param, retval);
2491 static int show_call(struct seq_file *m, void *data)
2493 struct asus_wmi *asus = m->private;
2494 struct bios_args args = {
2495 .arg0 = asus->debug.dev_id,
2496 .arg1 = asus->debug.ctrl_param,
2498 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
2499 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
2500 union acpi_object *obj;
2503 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
2504 0, asus->debug.method_id,
2507 if (ACPI_FAILURE(status))
2510 obj = (union acpi_object *)output.pointer;
2511 if (obj && obj->type == ACPI_TYPE_INTEGER)
2512 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
2513 asus->debug.dev_id, asus->debug.ctrl_param,
2514 (u32) obj->integer.value);
2516 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
2517 asus->debug.dev_id, asus->debug.ctrl_param,
2518 obj ? obj->type : -1);
2525 static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
2526 {NULL, "devs", show_devs},
2527 {NULL, "dsts", show_dsts},
2528 {NULL, "call", show_call},
2531 static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
2533 struct asus_wmi_debugfs_node *node = inode->i_private;
2535 return single_open(file, node->show, node->asus);
2538 static const struct file_operations asus_wmi_debugfs_io_ops = {
2539 .owner = THIS_MODULE,
2540 .open = asus_wmi_debugfs_open,
2542 .llseek = seq_lseek,
2543 .release = single_release,
2546 static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
2548 debugfs_remove_recursive(asus->debug.root);
2551 static void asus_wmi_debugfs_init(struct asus_wmi *asus)
2555 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
2557 debugfs_create_x32("method_id", S_IRUGO | S_IWUSR, asus->debug.root,
2558 &asus->debug.method_id);
2560 debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR, asus->debug.root,
2561 &asus->debug.dev_id);
2563 debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR, asus->debug.root,
2564 &asus->debug.ctrl_param);
2566 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
2567 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
2570 debugfs_create_file(node->name, S_IFREG | S_IRUGO,
2571 asus->debug.root, node,
2572 &asus_wmi_debugfs_io_ops);
2576 /* Init / exit ****************************************************************/
2578 static int asus_wmi_add(struct platform_device *pdev)
2580 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2581 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2582 struct asus_wmi *asus;
2583 const char *chassis_type;
2588 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2592 asus->driver = wdrv;
2593 asus->platform_device = pdev;
2594 wdrv->platform_device = pdev;
2595 platform_set_drvdata(asus->platform_device, asus);
2597 if (wdrv->detect_quirks)
2598 wdrv->detect_quirks(asus->driver);
2600 err = asus_wmi_platform_init(asus);
2604 err = fan_boost_mode_check_present(asus);
2606 goto fail_fan_boost_mode;
2608 err = throttle_thermal_policy_check_present(asus);
2610 goto fail_throttle_thermal_policy;
2612 throttle_thermal_policy_set_default(asus);
2614 err = asus_wmi_sysfs_init(asus->platform_device);
2618 err = asus_wmi_input_init(asus);
2622 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2624 err = asus_wmi_hwmon_init(asus);
2628 err = asus_wmi_led_init(asus);
2632 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2633 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2634 asus->driver->wlan_ctrl_by_user = 1;
2636 if (!(asus->driver->wlan_ctrl_by_user && ashs_present())) {
2637 err = asus_wmi_rfkill_init(asus);
2642 if (asus->driver->quirks->wmi_force_als_set)
2645 /* Some Asus desktop boards export an acpi-video backlight interface,
2646 stop this from showing up */
2647 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2648 if (chassis_type && !strcmp(chassis_type, "3"))
2649 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2651 if (asus->driver->quirks->wmi_backlight_power)
2652 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2654 if (asus->driver->quirks->wmi_backlight_native)
2655 acpi_video_set_dmi_backlight_type(acpi_backlight_native);
2657 if (asus->driver->quirks->xusb2pr)
2658 asus_wmi_set_xusb2pr(asus);
2660 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
2661 err = asus_wmi_backlight_init(asus);
2662 if (err && err != -ENODEV)
2663 goto fail_backlight;
2664 } else if (asus->driver->quirks->wmi_backlight_set_devstate)
2665 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
2667 if (asus_wmi_has_fnlock_key(asus)) {
2668 asus->fnlock_locked = true;
2669 asus_wmi_fnlock_update(asus);
2672 status = wmi_install_notify_handler(asus->driver->event_guid,
2673 asus_wmi_notify, asus);
2674 if (ACPI_FAILURE(status)) {
2675 pr_err("Unable to register notify handler - %d\n", status);
2677 goto fail_wmi_handler;
2680 asus_wmi_battery_init(asus);
2682 asus_wmi_debugfs_init(asus);
2687 asus_wmi_backlight_exit(asus);
2689 asus_wmi_rfkill_exit(asus);
2691 asus_wmi_led_exit(asus);
2694 asus_wmi_input_exit(asus);
2696 asus_wmi_sysfs_exit(asus->platform_device);
2698 fail_throttle_thermal_policy:
2699 fail_fan_boost_mode:
2705 static int asus_wmi_remove(struct platform_device *device)
2707 struct asus_wmi *asus;
2709 asus = platform_get_drvdata(device);
2710 wmi_remove_notify_handler(asus->driver->event_guid);
2711 asus_wmi_backlight_exit(asus);
2712 asus_wmi_input_exit(asus);
2713 asus_wmi_led_exit(asus);
2714 asus_wmi_rfkill_exit(asus);
2715 asus_wmi_debugfs_exit(asus);
2716 asus_wmi_sysfs_exit(asus->platform_device);
2717 asus_fan_set_auto(asus);
2718 asus_wmi_battery_exit(asus);
2724 /* Platform driver - hibernate/resume callbacks *******************************/
2726 static int asus_hotk_thaw(struct device *device)
2728 struct asus_wmi *asus = dev_get_drvdata(device);
2730 if (asus->wlan.rfkill) {
2734 * Work around bios bug - acpi _PTS turns off the wireless led
2735 * during suspend. Normally it restores it on resume, but
2736 * we should kick it ourselves in case hibernation is aborted.
2738 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
2739 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
2745 static int asus_hotk_resume(struct device *device)
2747 struct asus_wmi *asus = dev_get_drvdata(device);
2749 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2750 kbd_led_update(asus);
2752 if (asus_wmi_has_fnlock_key(asus))
2753 asus_wmi_fnlock_update(asus);
2755 if (asus->driver->quirks->use_lid_flip_devid)
2756 lid_flip_tablet_mode_get_state(asus);
2761 static int asus_hotk_restore(struct device *device)
2763 struct asus_wmi *asus = dev_get_drvdata(device);
2766 /* Refresh both wlan rfkill state and pci hotplug */
2767 if (asus->wlan.rfkill)
2768 asus_rfkill_hotplug(asus);
2770 if (asus->bluetooth.rfkill) {
2771 bl = !asus_wmi_get_devstate_simple(asus,
2772 ASUS_WMI_DEVID_BLUETOOTH);
2773 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2775 if (asus->wimax.rfkill) {
2776 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
2777 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2779 if (asus->wwan3g.rfkill) {
2780 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
2781 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
2783 if (asus->gps.rfkill) {
2784 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2785 rfkill_set_sw_state(asus->gps.rfkill, bl);
2787 if (asus->uwb.rfkill) {
2788 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2789 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2791 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2792 kbd_led_update(asus);
2794 if (asus_wmi_has_fnlock_key(asus))
2795 asus_wmi_fnlock_update(asus);
2797 if (asus->driver->quirks->use_lid_flip_devid)
2798 lid_flip_tablet_mode_get_state(asus);
2803 static const struct dev_pm_ops asus_pm_ops = {
2804 .thaw = asus_hotk_thaw,
2805 .restore = asus_hotk_restore,
2806 .resume = asus_hotk_resume,
2809 /* Registration ***************************************************************/
2811 static int asus_wmi_probe(struct platform_device *pdev)
2813 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2814 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2817 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
2818 pr_warn("ASUS Management GUID not found\n");
2822 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
2823 pr_warn("ASUS Event GUID not found\n");
2828 ret = wdrv->probe(pdev);
2833 return asus_wmi_add(pdev);
2838 int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
2840 struct platform_driver *platform_driver;
2841 struct platform_device *platform_device;
2846 platform_driver = &driver->platform_driver;
2847 platform_driver->remove = asus_wmi_remove;
2848 platform_driver->driver.owner = driver->owner;
2849 platform_driver->driver.name = driver->name;
2850 platform_driver->driver.pm = &asus_pm_ops;
2852 platform_device = platform_create_bundle(platform_driver,
2855 if (IS_ERR(platform_device))
2856 return PTR_ERR(platform_device);
2861 EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2863 void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2865 platform_device_unregister(driver->platform_device);
2866 platform_driver_unregister(&driver->platform_driver);
2869 EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2871 static int __init asus_wmi_init(void)
2873 pr_info("ASUS WMI generic driver loaded\n");
2877 static void __exit asus_wmi_exit(void)
2879 pr_info("ASUS WMI generic driver unloaded\n");
2882 module_init(asus_wmi_init);
2883 module_exit(asus_wmi_exit);