depends on PCI
help
The Intel Platform Controller Hub for Intel Core SoCs provides access
- to Power Management Controller registers via a PCI interface. This
+ to Power Management Controller registers via various interfaces. This
driver can utilize debugging capabilities and supported features as
- exposed by the Power Management Controller.
+ exposed by the Power Management Controller. It also may perform some
+ tasks in the PMC in order to enable transition into the SLPS0 state.
+ It should be selected on all Intel platforms supported by the driver.
Supported features:
- SLP_S0_RESIDENCY counter
- PCH IP Power Gating status
- - LTR Ignore
+ - LTR Ignore / LTR Show
- MPHY/PLL gating status (Sunrisepoint PCH only)
+ - SLPS0 Debug registers (Cannonlake/Icelake PCH)
+ - Low Power Mode registers (Tigerlake and beyond)
+ - PMC quirks as needed to enable SLPS0/S0ix
config INTEL_PMT_CLASS
tristate
sysfs_remove_group(wmi_priv.enumeration_data[instance_id].attr_name_kobj,
&enumeration_attr_group);
}
+ wmi_priv.enumeration_instances_count = 0;
+
kfree(wmi_priv.enumeration_data);
+ wmi_priv.enumeration_data = NULL;
}
sysfs_remove_group(wmi_priv.integer_data[instance_id].attr_name_kobj,
&integer_attr_group);
}
+ wmi_priv.integer_instances_count = 0;
+
kfree(wmi_priv.integer_data);
+ wmi_priv.integer_data = NULL;
}
sysfs_remove_group(wmi_priv.po_data[instance_id].attr_name_kobj,
&po_attr_group);
}
+ wmi_priv.po_instances_count = 0;
+
kfree(wmi_priv.po_data);
+ wmi_priv.po_data = NULL;
}
sysfs_remove_group(wmi_priv.str_data[instance_id].attr_name_kobj,
&str_attr_group);
}
+ wmi_priv.str_instances_count = 0;
+
kfree(wmi_priv.str_data);
+ wmi_priv.str_data = NULL;
}
*/
static int create_attributes_level_sysfs_files(void)
{
- int ret = sysfs_create_file(&wmi_priv.main_dir_kset->kobj, &reset_bios.attr);
+ int ret;
- if (ret) {
- pr_debug("could not create reset_bios file\n");
+ ret = sysfs_create_file(&wmi_priv.main_dir_kset->kobj, &reset_bios.attr);
+ if (ret)
return ret;
- }
ret = sysfs_create_file(&wmi_priv.main_dir_kset->kobj, &pending_reboot.attr);
- if (ret) {
- pr_debug("could not create changing_pending_reboot file\n");
- sysfs_remove_file(&wmi_priv.main_dir_kset->kobj, &reset_bios.attr);
- }
- return ret;
-}
+ if (ret)
+ return ret;
-static void release_reset_bios_data(void)
-{
- sysfs_remove_file(&wmi_priv.main_dir_kset->kobj, &reset_bios.attr);
- sysfs_remove_file(&wmi_priv.main_dir_kset->kobj, &pending_reboot.attr);
+ return 0;
}
static ssize_t wmi_sysman_attr_show(struct kobject *kobj, struct attribute *attr,
*/
static void release_attributes_data(void)
{
- release_reset_bios_data();
-
mutex_lock(&wmi_priv.mutex);
exit_enum_attributes();
exit_int_attributes();
wmi_priv.authentication_dir_kset = NULL;
}
if (wmi_priv.main_dir_kset) {
+ sysfs_remove_file(&wmi_priv.main_dir_kset->kobj, &reset_bios.attr);
+ sysfs_remove_file(&wmi_priv.main_dir_kset->kobj, &pending_reboot.attr);
destroy_attribute_objs(wmi_priv.main_dir_kset);
kset_unregister(wmi_priv.main_dir_kset);
+ wmi_priv.main_dir_kset = NULL;
}
mutex_unlock(&wmi_priv.mutex);
-
}
/**
err_attr_init:
mutex_unlock(&wmi_priv.mutex);
- release_attributes_data();
kfree(obj);
return retval;
}
}
ret = init_bios_attr_set_interface();
- if (ret || !wmi_priv.bios_attr_wdev) {
- pr_debug("failed to initialize set interface\n");
- goto fail_set_interface;
- }
+ if (ret)
+ return ret;
ret = init_bios_attr_pass_interface();
- if (ret || !wmi_priv.password_attr_wdev) {
- pr_debug("failed to initialize pass interface\n");
- goto fail_pass_interface;
+ if (ret)
+ goto err_exit_bios_attr_set_interface;
+
+ if (!wmi_priv.bios_attr_wdev || !wmi_priv.password_attr_wdev) {
+ pr_debug("failed to find set or pass interface\n");
+ ret = -ENODEV;
+ goto err_exit_bios_attr_pass_interface;
}
ret = class_register(&firmware_attributes_class);
if (ret)
- goto fail_class;
+ goto err_exit_bios_attr_pass_interface;
wmi_priv.class_dev = device_create(&firmware_attributes_class, NULL, MKDEV(0, 0),
NULL, "%s", DRIVER_NAME);
if (IS_ERR(wmi_priv.class_dev)) {
ret = PTR_ERR(wmi_priv.class_dev);
- goto fail_classdev;
+ goto err_unregister_class;
}
wmi_priv.main_dir_kset = kset_create_and_add("attributes", NULL,
&wmi_priv.class_dev->kobj);
if (!wmi_priv.main_dir_kset) {
ret = -ENOMEM;
- goto fail_main_kset;
+ goto err_destroy_classdev;
}
wmi_priv.authentication_dir_kset = kset_create_and_add("authentication", NULL,
&wmi_priv.class_dev->kobj);
if (!wmi_priv.authentication_dir_kset) {
ret = -ENOMEM;
- goto fail_authentication_kset;
+ goto err_release_attributes_data;
}
ret = create_attributes_level_sysfs_files();
if (ret) {
pr_debug("could not create reset BIOS attribute\n");
- goto fail_reset_bios;
+ goto err_release_attributes_data;
}
ret = init_bios_attributes(ENUM, DELL_WMI_BIOS_ENUMERATION_ATTRIBUTE_GUID);
if (ret) {
pr_debug("failed to populate enumeration type attributes\n");
- goto fail_create_group;
+ goto err_release_attributes_data;
}
ret = init_bios_attributes(INT, DELL_WMI_BIOS_INTEGER_ATTRIBUTE_GUID);
if (ret) {
pr_debug("failed to populate integer type attributes\n");
- goto fail_create_group;
+ goto err_release_attributes_data;
}
ret = init_bios_attributes(STR, DELL_WMI_BIOS_STRING_ATTRIBUTE_GUID);
if (ret) {
pr_debug("failed to populate string type attributes\n");
- goto fail_create_group;
+ goto err_release_attributes_data;
}
ret = init_bios_attributes(PO, DELL_WMI_BIOS_PASSOBJ_ATTRIBUTE_GUID);
if (ret) {
pr_debug("failed to populate pass object type attributes\n");
- goto fail_create_group;
+ goto err_release_attributes_data;
}
return 0;
-fail_create_group:
+err_release_attributes_data:
release_attributes_data();
-fail_reset_bios:
- if (wmi_priv.authentication_dir_kset) {
- kset_unregister(wmi_priv.authentication_dir_kset);
- wmi_priv.authentication_dir_kset = NULL;
- }
-
-fail_authentication_kset:
- if (wmi_priv.main_dir_kset) {
- kset_unregister(wmi_priv.main_dir_kset);
- wmi_priv.main_dir_kset = NULL;
- }
-
-fail_main_kset:
+err_destroy_classdev:
device_destroy(&firmware_attributes_class, MKDEV(0, 0));
-fail_classdev:
+err_unregister_class:
class_unregister(&firmware_attributes_class);
-fail_class:
+err_exit_bios_attr_pass_interface:
exit_bios_attr_pass_interface();
-fail_pass_interface:
+err_exit_bios_attr_set_interface:
exit_bios_attr_set_interface();
-fail_set_interface:
return ret;
}
DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x2 Detachable"),
},
},
+ {
+ .ident = "Lenovo ThinkPad X1 Tablet Gen 2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_FAMILY, "ThinkPad X1 Tablet Gen 2"),
+ },
+ },
{ }
};
};
static const struct key_entry intel_vbtn_switchmap[] = {
- { KE_SW, 0xCA, { .sw = { SW_DOCK, 1 } } }, /* Docked */
- { KE_SW, 0xCB, { .sw = { SW_DOCK, 0 } } }, /* Undocked */
+ /*
+ * SW_DOCK should only be reported for docking stations, but DSDTs using the
+ * intel-vbtn code, always seem to use this for 2-in-1s / convertibles and set
+ * SW_DOCK=1 when in laptop-mode (in tandem with setting SW_TABLET_MODE=0).
+ * This causes userspace to think the laptop is docked to a port-replicator
+ * and to disable suspend-on-lid-close, which is undesirable.
+ * Map the dock events to KEY_IGNORE to avoid this broken SW_DOCK reporting.
+ */
+ { KE_IGNORE, 0xCA, { .sw = { SW_DOCK, 1 } } }, /* Docked */
+ { KE_IGNORE, 0xCB, { .sw = { SW_DOCK, 0 } } }, /* Undocked */
{ KE_SW, 0xCC, { .sw = { SW_TABLET_MODE, 1 } } }, /* Tablet */
{ KE_SW, 0xCD, { .sw = { SW_TABLET_MODE, 0 } } }, /* Laptop */
{ KE_END }
}
DEFINE_SHOW_ATTRIBUTE(pmc_core_pll);
-static ssize_t pmc_core_ltr_ignore_write(struct file *file,
- const char __user *userbuf,
- size_t count, loff_t *ppos)
+static int pmc_core_send_ltr_ignore(u32 value)
{
struct pmc_dev *pmcdev = &pmc;
const struct pmc_reg_map *map = pmcdev->map;
- u32 val, buf_size, fd;
- int err;
-
- buf_size = count < 64 ? count : 64;
-
- err = kstrtou32_from_user(userbuf, buf_size, 10, &val);
- if (err)
- return err;
+ u32 reg;
+ int err = 0;
mutex_lock(&pmcdev->lock);
- if (val > map->ltr_ignore_max) {
+ if (value > map->ltr_ignore_max) {
err = -EINVAL;
goto out_unlock;
}
- fd = pmc_core_reg_read(pmcdev, map->ltr_ignore_offset);
- fd |= (1U << val);
- pmc_core_reg_write(pmcdev, map->ltr_ignore_offset, fd);
+ reg = pmc_core_reg_read(pmcdev, map->ltr_ignore_offset);
+ reg |= BIT(value);
+ pmc_core_reg_write(pmcdev, map->ltr_ignore_offset, reg);
out_unlock:
mutex_unlock(&pmcdev->lock);
+
+ return err;
+}
+
+static ssize_t pmc_core_ltr_ignore_write(struct file *file,
+ const char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ u32 buf_size, value;
+ int err;
+
+ buf_size = min_t(u32, count, 64);
+
+ err = kstrtou32_from_user(userbuf, buf_size, 10, &value);
+ if (err)
+ return err;
+
+ err = pmc_core_send_ltr_ignore(value);
+
return err == 0 ? count : err;
}
pmcdev->pmc_xram_read_bit = pmc_core_check_read_lock_bit();
dmi_check_system(pmc_core_dmi_table);
+ /*
+ * On TGL, due to a hardware limitation, the GBE LTR blocks PC10 when
+ * a cable is attached. Tell the PMC to ignore it.
+ */
+ if (pmcdev->map == &tgl_reg_map) {
+ dev_dbg(&pdev->dev, "ignoring GBE LTR\n");
+ pmc_core_send_ltr_ignore(3);
+ }
+
pmc_core_dbgfs_register(pmcdev);
device_initialized = true;
struct intel_pmt_namespace *ns,
struct device *parent)
{
- struct resource res;
+ struct resource res = {0};
struct device *dev;
int ret;
#define CRASH_TYPE_OOBMSM 1
/* Control Flags */
-#define CRASHLOG_FLAG_DISABLE BIT(27)
+#define CRASHLOG_FLAG_DISABLE BIT(28)
/*
- * Bits 28 and 29 control the state of bit 31.
+ * Bits 29 and 30 control the state of bit 31.
*
- * Bit 28 will clear bit 31, if set, allowing a new crashlog to be captured.
- * Bit 29 will immediately trigger a crashlog to be generated, setting bit 31.
- * Bit 30 is read-only and reserved as 0.
+ * Bit 29 will clear bit 31, if set, allowing a new crashlog to be captured.
+ * Bit 30 will immediately trigger a crashlog to be generated, setting bit 31.
* Bit 31 is the read-only status with a 1 indicating log is complete.
*/
-#define CRASHLOG_FLAG_TRIGGER_CLEAR BIT(28)
-#define CRASHLOG_FLAG_TRIGGER_EXECUTE BIT(29)
+#define CRASHLOG_FLAG_TRIGGER_CLEAR BIT(29)
+#define CRASHLOG_FLAG_TRIGGER_EXECUTE BIT(30)
#define CRASHLOG_FLAG_TRIGGER_COMPLETE BIT(31)
#define CRASHLOG_FLAG_TRIGGER_MASK GENMASK(31, 28)
case TP_HKEY_EV_KEY_NUMLOCK:
case TP_HKEY_EV_KEY_FN:
- case TP_HKEY_EV_KEY_FN_ESC:
/* 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;
*ignore_acpi_ev = true;
return true;
+ case TP_HKEY_EV_KEY_FN_ESC:
+ /* Get the media key status to foce the status LED to update */
+ acpi_evalf(hkey_handle, NULL, "GMKS", "v");
+ *send_acpi_ev = false;
+ *ignore_acpi_ev = true;
+ return true;
+
case TP_HKEY_EV_TABLET_CHANGED:
tpacpi_input_send_tabletsw();
hotkey_tablet_mode_notify_change();
* 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 */
static bool has_lapsensor;
static bool palm_state;
static bool lap_state;
+static int dytc_version;
static int dytc_command(int command, int *output)
{
return 0;
}
+static int dytc_get_version(void)
+{
+ int err, output;
+
+ /* Check if we've been called before - and just return cached value */
+ if (dytc_version)
+ return dytc_version;
+
+ /* Otherwise query DYTC and extract version information */
+ err = dytc_command(DYTC_CMD_QUERY, &output);
+ /*
+ * If support isn't available (ENODEV) then don't return an error
+ * and don't create the sysfs group
+ */
+ if (err == -ENODEV)
+ return 0;
+ /* For all other errors we can flag the failure */
+ if (err)
+ return err;
+
+ /* Check DYTC is enabled and supports mode setting */
+ if (output & BIT(DYTC_QUERY_ENABLE_BIT))
+ dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
+
+ return 0;
+}
+
static int lapsensor_get(bool *present, bool *state)
{
int output, err;
if (err)
return err;
}
- if (has_lapsensor) {
+
+ /* Check if we know the DYTC version, if we don't then get it */
+ if (!dytc_version) {
+ err = dytc_get_version();
+ if (err)
+ return err;
+ }
+ /*
+ * 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)) {
err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr);
if (err)
return err;
* DYTC Platform Profile interface
*/
-#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_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 */
return err;
if (profile == PLATFORM_PROFILE_BALANCED) {
- /* To get back to balanced mode we just issue a reset command */
- err = dytc_command(DYTC_CMD_RESET, &output);
+ /*
+ * 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 {
if (err)
return err;
+ /* Check if we know the DYTC version, if we don't then get it */
+ if (!dytc_version) {
+ err = dytc_get_version();
+ if (err)
+ return err;
+ }
/* Check DYTC is enabled and supports mode setting */
- if (output & BIT(DYTC_QUERY_ENABLE_BIT)) {
- /* Only DYTC v5.0 and later has this feature. */
- int dytc_version;
-
- dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
- if (dytc_version >= 5) {
- dbg_printk(TPACPI_DBG_INIT,
- "DYTC version %d: thermal mode available\n", dytc_version);
- /* Create platform_profile structure and register */
- err = platform_profile_register(&dytc_profile);
- /*
- * If for some reason platform_profiles aren't enabled
- * don't quit terminally.
- */
- if (err)
- return 0;
+ if (dytc_version >= 5) {
+ dbg_printk(TPACPI_DBG_INIT,
+ "DYTC version %d: thermal mode available\n", dytc_version);
+ /* Create platform_profile structure and register */
+ err = platform_profile_register(&dytc_profile);
+ /*
+ * If for some reason platform_profiles aren't enabled
+ * don't quit terminally.
+ */
+ if (err)
+ return 0;
- dytc_profile_available = true;
- /* Ensure initial values are correct */
- dytc_profile_refresh();
- }
+ dytc_profile_available = true;
+ /* Ensure initial values are correct */
+ dytc_profile_refresh();
}
return 0;
}
projects / linux-2.6-microblaze.git / commitdiff