drivers/platform/x86/lenovo/wmi-gamezone.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Lenovo GameZone WMI interface driver.
  *
  * The GameZone WMI interface provides platform profile and fan curve settings
  * for devices that fall under the "Gaming Series" of Lenovo Legion devices.
  *
  * Copyright (C) 2025 Derek J. Clark <derekjohn.clark@gmail.com>
  */

 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <linux/export.h>
 #include <linux/list.h>
 #include <linux/module.h>
 #include <linux/notifier.h>
 #include <linux/platform_profile.h>
 #include <linux/spinlock.h>
 #include <linux/spinlock_types.h>
 #include <linux/types.h>
 #include <linux/wmi.h>

 #include "wmi-events.h"
 #include "wmi-gamezone.h"
 #include "wmi-helpers.h"
 #include "wmi-other.h"

 #define LENOVO_GAMEZONE_GUID "887B54E3-DDDC-4B2C-8B88-68A26A8835D0"

 #define LWMI_GZ_METHOD_ID_SMARTFAN_SUP 43
 #define LWMI_GZ_METHOD_ID_SMARTFAN_SET 44
 #define LWMI_GZ_METHOD_ID_SMARTFAN_GET 45

 struct lwmi_gz_priv {
 	enum thermal_mode current_mode;
 	struct notifier_block event_nb;
 	struct notifier_block mode_nb;
 	spinlock_t gz_mode_lock; /* current_mode lock */
 	struct wmi_device *wdev;
 	int extreme_supported;
 	struct device *ppdev;
 };

 struct quirk_entry {
 	bool extreme_supported;
 };

 static struct quirk_entry quirk_no_extreme_bug = {
 	.extreme_supported = false,
 };

 /**
  * lwmi_gz_mode_call() - Call method for lenovo-wmi-other driver notifier.
  *
  * @nb: The notifier_block registered to lenovo-wmi-other driver.
  * @cmd: The event type.
  * @data: Thermal mode enum pointer pointer for returning the thermal mode.
  *
  * For LWMI_GZ_GET_THERMAL_MODE, retrieve the current thermal mode.
  *
  * Return: Notifier_block status.
  */
 static int lwmi_gz_mode_call(struct notifier_block *nb, unsigned long cmd,
 			     void *data)
 {
 	enum thermal_mode **mode = data;
 	struct lwmi_gz_priv *priv;

 	priv = container_of(nb, struct lwmi_gz_priv, mode_nb);

 	switch (cmd) {
 	case LWMI_GZ_GET_THERMAL_MODE:
 		scoped_guard(spinlock, &priv->gz_mode_lock) {
 			**mode = priv->current_mode;
 		}
 		return NOTIFY_OK;
 	default:
 		return NOTIFY_DONE;
 	}
 }

 /**
  * lwmi_gz_event_call() - Call method for lenovo-wmi-events driver notifier.
  * block call chain.
  * @nb: The notifier_block registered to lenovo-wmi-events driver.
  * @cmd: The event type.
  * @data: The data to be updated by the event.
  *
  * For LWMI_EVENT_THERMAL_MODE, set current_mode and notify platform_profile
  * of a change.
  *
  * Return: notifier_block status.
  */
 static int lwmi_gz_event_call(struct notifier_block *nb, unsigned long cmd,
 			      void *data)
 {
 	enum thermal_mode *mode = data;
 	struct lwmi_gz_priv *priv;

 	priv = container_of(nb, struct lwmi_gz_priv, event_nb);

 	switch (cmd) {
 	case LWMI_EVENT_THERMAL_MODE:
 		scoped_guard(spinlock, &priv->gz_mode_lock) {
 			priv->current_mode = *mode;
 		}
 		platform_profile_notify(priv->ppdev);
 		return NOTIFY_STOP;
 	default:
 		return NOTIFY_DONE;
 	}
 }

 /**
  * lwmi_gz_thermal_mode_supported() - Get the version of the WMI
  * interface to determine the support level.
  * @wdev: The Gamezone WMI device.
  * @supported: Pointer to return the support level with.
  *
  * Return: 0 on success, or an error code.
  */
 static int lwmi_gz_thermal_mode_supported(struct wmi_device *wdev,
 					  int *supported)
 {
 	return lwmi_dev_evaluate_int(wdev, 0x0, LWMI_GZ_METHOD_ID_SMARTFAN_SUP,
 				     NULL, 0, supported);
 }

 /**
  * lwmi_gz_thermal_mode_get() - Get the current thermal mode.
  * @wdev: The Gamezone interface WMI device.
  * @mode: Pointer to return the thermal mode with.
  *
  * Return: 0 on success, or an error code.
  */
 static int lwmi_gz_thermal_mode_get(struct wmi_device *wdev,
 				    enum thermal_mode *mode)
 {
 	return lwmi_dev_evaluate_int(wdev, 0x0, LWMI_GZ_METHOD_ID_SMARTFAN_GET,
 				     NULL, 0, mode);
 }

 /**
  * lwmi_gz_profile_get() - Get the current platform profile.
  * @dev: the Gamezone interface parent device.
  * @profile: Pointer to provide the current platform profile with.
  *
  * Call lwmi_gz_thermal_mode_get and convert the thermal mode into a platform
  * profile based on the support level of the interface.
  *
  * Return: 0 on success, or an error code.
  */
 static int lwmi_gz_profile_get(struct device *dev,
 			       enum platform_profile_option *profile)
 {
 	struct lwmi_gz_priv *priv = dev_get_drvdata(dev);
 	enum thermal_mode mode;
 	int ret;

 	ret = lwmi_gz_thermal_mode_get(priv->wdev, &mode);
 	if (ret)
 		return ret;

 	switch (mode) {
 	case LWMI_GZ_THERMAL_MODE_QUIET:
 		*profile = PLATFORM_PROFILE_LOW_POWER;
 		break;
 	case LWMI_GZ_THERMAL_MODE_BALANCED:
 		*profile = PLATFORM_PROFILE_BALANCED;
 		break;
 	case LWMI_GZ_THERMAL_MODE_PERFORMANCE:
 		if (priv->extreme_supported) {
 			*profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE;
 			break;
 		}
 		*profile = PLATFORM_PROFILE_PERFORMANCE;
 		break;
 	case LWMI_GZ_THERMAL_MODE_EXTREME:
 		*profile = PLATFORM_PROFILE_PERFORMANCE;
 		break;
 	case LWMI_GZ_THERMAL_MODE_CUSTOM:
 		*profile = PLATFORM_PROFILE_CUSTOM;
 		break;
 	default:
 		return -EINVAL;
 	}

 	guard(spinlock)(&priv->gz_mode_lock);
 	priv->current_mode = mode;

 	return 0;
 }

 /**
  * lwmi_gz_profile_set() - Set the current platform profile.
  * @dev: The Gamezone interface parent device.
  * @profile: Pointer to the desired platform profile.
  *
  * Convert the given platform profile into a thermal mode based on the support
  * level of the interface, then call the WMI method to set the thermal mode.
  *
  * Return: 0 on success, or an error code.
  */
 static int lwmi_gz_profile_set(struct device *dev,
 			       enum platform_profile_option profile)
 {
 	struct lwmi_gz_priv *priv = dev_get_drvdata(dev);
 	struct wmi_method_args_32 args;
 	enum thermal_mode mode;
 	int ret;

 	switch (profile) {
 	case PLATFORM_PROFILE_LOW_POWER:
 		mode = LWMI_GZ_THERMAL_MODE_QUIET;
 		break;
 	case PLATFORM_PROFILE_BALANCED:
 		mode = LWMI_GZ_THERMAL_MODE_BALANCED;
 		break;
 	case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
 		mode = LWMI_GZ_THERMAL_MODE_PERFORMANCE;
 		break;
 	case PLATFORM_PROFILE_PERFORMANCE:
 		if (priv->extreme_supported) {
 			mode = LWMI_GZ_THERMAL_MODE_EXTREME;
 			break;
 		}
 		mode = LWMI_GZ_THERMAL_MODE_PERFORMANCE;
 		break;
 	case PLATFORM_PROFILE_CUSTOM:
 		mode = LWMI_GZ_THERMAL_MODE_CUSTOM;
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	args.arg0 = mode;

 	ret = lwmi_dev_evaluate_int(priv->wdev, 0x0,
 				    LWMI_GZ_METHOD_ID_SMARTFAN_SET,
 				    (u8 *)&args, sizeof(args), NULL);
 	if (ret)
 		return ret;

 	guard(spinlock)(&priv->gz_mode_lock);
 	priv->current_mode = mode;

 	return 0;
 }

 static const struct dmi_system_id fwbug_list[] = {
 	{
 		.ident = "Legion Go 8APU1",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8APU1"),
 		},
 		.driver_data = &quirk_no_extreme_bug,
 	},
 	{
 		.ident = "Legion Go S 8APU1",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go S 8APU1"),
 		},
 		.driver_data = &quirk_no_extreme_bug,
 	},
 	{
 		.ident = "Legion Go S 8ARP1",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go S 8ARP1"),
 		},
 		.driver_data = &quirk_no_extreme_bug,
 	},
 	{
 		.ident = "Legion Go 8ASP2",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8ASP2"),
 		},
 		.driver_data = &quirk_no_extreme_bug,
 	},
 	{
 		.ident = "Legion Go 8AHP2",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 			DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8AHP2"),
 		},
 		.driver_data = &quirk_no_extreme_bug,
 	},
 	{},
 };

 /**
  * lwmi_gz_extreme_supported() - Evaluate if a device supports extreme thermal mode.
  * @profile_support_ver: Version of the WMI interface.
  *
  * Determine if the extreme thermal mode is supported by the hardware.
  * Anything version 5 or lower does not. For devices with a version 6 or
  * greater do a DMI check, as some devices report a version that supports
  * extreme mode but have an incomplete entry in the BIOS. To ensure this
  * cannot be set, quirk them to prevent assignment.
  *
  * Return: bool.
  */
 static bool lwmi_gz_extreme_supported(int profile_support_ver)
 {
 	const struct dmi_system_id *dmi_id;
 	struct quirk_entry *quirks;

 	if (profile_support_ver < 6)
 		return false;

 	dmi_id = dmi_first_match(fwbug_list);
 	if (!dmi_id)
 		return true;

 	quirks = dmi_id->driver_data;

 	return quirks->extreme_supported;
 }

 /**
  * lwmi_gz_platform_profile_probe - Enable and set up the platform profile
  * device.
  * @drvdata: Driver data for the interface.
  * @choices: Container for enabled platform profiles.
  *
  * Determine if thermal mode is supported, and if so to what feature level.
  * Then enable all supported platform profiles.
  *
  * Return: 0 on success, or an error code.
  */
 static int lwmi_gz_platform_profile_probe(void *drvdata, unsigned long *choices)
 {
 	struct lwmi_gz_priv *priv = drvdata;
 	int profile_support_ver;
 	int ret;

 	ret = lwmi_gz_thermal_mode_supported(priv->wdev, &profile_support_ver);
 	if (ret)
 		return ret;

 	if (profile_support_ver < 1)
 		return -ENODEV;

 	set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
 	set_bit(PLATFORM_PROFILE_BALANCED, choices);
 	set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
 	set_bit(PLATFORM_PROFILE_CUSTOM, choices);

 	priv->extreme_supported = lwmi_gz_extreme_supported(profile_support_ver);
 	if (priv->extreme_supported)
 		set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices);

 	return 0;
 }

 static const struct platform_profile_ops lwmi_gz_platform_profile_ops = {
 	.probe = lwmi_gz_platform_profile_probe,
 	.profile_get = lwmi_gz_profile_get,
 	.profile_set = lwmi_gz_profile_set,
 };

 static int lwmi_gz_probe(struct wmi_device *wdev, const void *context)
 {
 	struct lwmi_gz_priv *priv;
 	int ret;

 	priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;

 	priv->wdev = wdev;
 	dev_set_drvdata(&wdev->dev, priv);

 	priv->ppdev = devm_platform_profile_register(&wdev->dev, "lenovo-wmi-gamezone",
 						     priv, &lwmi_gz_platform_profile_ops);
 	if (IS_ERR(priv->ppdev))
 		return -ENODEV;

 	spin_lock_init(&priv->gz_mode_lock);

 	ret = lwmi_gz_thermal_mode_get(wdev, &priv->current_mode);
 	if (ret)
 		return ret;

 	priv->event_nb.notifier_call = lwmi_gz_event_call;
 	ret = devm_lwmi_events_register_notifier(&wdev->dev, &priv->event_nb);
 	if (ret)
 		return ret;

 	priv->mode_nb.notifier_call = lwmi_gz_mode_call;
 	return devm_lwmi_om_register_notifier(&wdev->dev, &priv->mode_nb);
 }

 static const struct wmi_device_id lwmi_gz_id_table[] = {
 	{ LENOVO_GAMEZONE_GUID, NULL },
 	{}
 };

 static struct wmi_driver lwmi_gz_driver = {
 	.driver = {
 		.name = "lenovo_wmi_gamezone",
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	},
 	.id_table = lwmi_gz_id_table,
 	.probe = lwmi_gz_probe,
 	.no_singleton = true,
 };

 module_wmi_driver(lwmi_gz_driver);

 MODULE_IMPORT_NS("LENOVO_WMI_EVENTS");
 MODULE_IMPORT_NS("LENOVO_WMI_HELPERS");
 MODULE_IMPORT_NS("LENOVO_WMI_OTHER");
 MODULE_DEVICE_TABLE(wmi, lwmi_gz_id_table);
 MODULE_AUTHOR("Derek J. Clark <derekjohn.clark@gmail.com>");
 MODULE_DESCRIPTION("Lenovo GameZone WMI Driver");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* Lenovo GameZone WMI interface driver.
	*
	* The GameZone WMI interface provides platform profile and fan curve settings
	* for devices that fall under the "Gaming Series" of Lenovo Legion devices.
	*
	* Copyright (C) 2025 Derek J. Clark <derekjohn.clark@gmail.com>
	*/

	#include <linux/acpi.h>
	#include <linux/dmi.h>
	#include <linux/export.h>
	#include <linux/list.h>
	#include <linux/module.h>
	#include <linux/notifier.h>
	#include <linux/platform_profile.h>
	#include <linux/spinlock.h>
	#include <linux/spinlock_types.h>
	#include <linux/types.h>
	#include <linux/wmi.h>

	#include "wmi-events.h"
	#include "wmi-gamezone.h"
	#include "wmi-helpers.h"
	#include "wmi-other.h"

	#define LENOVO_GAMEZONE_GUID "887B54E3-DDDC-4B2C-8B88-68A26A8835D0"

	#define LWMI_GZ_METHOD_ID_SMARTFAN_SUP 43
	#define LWMI_GZ_METHOD_ID_SMARTFAN_SET 44
	#define LWMI_GZ_METHOD_ID_SMARTFAN_GET 45

	struct lwmi_gz_priv {
	enum thermal_mode current_mode;
	struct notifier_block event_nb;
	struct notifier_block mode_nb;
	spinlock_t gz_mode_lock; /* current_mode lock */
	struct wmi_device *wdev;
	int extreme_supported;
	struct device *ppdev;
	};

	struct quirk_entry {
	bool extreme_supported;
	};

	static struct quirk_entry quirk_no_extreme_bug = {
	.extreme_supported = false,
	};

	/**
	* lwmi_gz_mode_call() - Call method for lenovo-wmi-other driver notifier.
	*
	* @nb: The notifier_block registered to lenovo-wmi-other driver.
	* @cmd: The event type.
	* @data: Thermal mode enum pointer pointer for returning the thermal mode.
	*
	* For LWMI_GZ_GET_THERMAL_MODE, retrieve the current thermal mode.
	*
	* Return: Notifier_block status.
	*/
	static int lwmi_gz_mode_call(struct notifier_block *nb, unsigned long cmd,
	void *data)
	{
	enum thermal_mode **mode = data;
	struct lwmi_gz_priv *priv;

	priv = container_of(nb, struct lwmi_gz_priv, mode_nb);

	switch (cmd) {
	case LWMI_GZ_GET_THERMAL_MODE:
	scoped_guard(spinlock, &priv->gz_mode_lock) {
	**mode = priv->current_mode;
	}
	return NOTIFY_OK;
	default:
	return NOTIFY_DONE;
	}
	}

	/**
	* lwmi_gz_event_call() - Call method for lenovo-wmi-events driver notifier.
	* block call chain.
	* @nb: The notifier_block registered to lenovo-wmi-events driver.
	* @cmd: The event type.
	* @data: The data to be updated by the event.
	*
	* For LWMI_EVENT_THERMAL_MODE, set current_mode and notify platform_profile
	* of a change.
	*
	* Return: notifier_block status.
	*/
	static int lwmi_gz_event_call(struct notifier_block *nb, unsigned long cmd,
	void *data)
	{
	enum thermal_mode *mode = data;
	struct lwmi_gz_priv *priv;

	priv = container_of(nb, struct lwmi_gz_priv, event_nb);

	switch (cmd) {
	case LWMI_EVENT_THERMAL_MODE:
	scoped_guard(spinlock, &priv->gz_mode_lock) {
	priv->current_mode = *mode;
	}
	platform_profile_notify(priv->ppdev);
	return NOTIFY_STOP;
	default:
	return NOTIFY_DONE;
	}
	}

	/**
	* lwmi_gz_thermal_mode_supported() - Get the version of the WMI
	* interface to determine the support level.
	* @wdev: The Gamezone WMI device.
	* @supported: Pointer to return the support level with.
	*
	* Return: 0 on success, or an error code.
	*/
	static int lwmi_gz_thermal_mode_supported(struct wmi_device *wdev,
	int *supported)
	{
	return lwmi_dev_evaluate_int(wdev, 0x0, LWMI_GZ_METHOD_ID_SMARTFAN_SUP,
	NULL, 0, supported);
	}

	/**
	* lwmi_gz_thermal_mode_get() - Get the current thermal mode.
	* @wdev: The Gamezone interface WMI device.
	* @mode: Pointer to return the thermal mode with.
	*
	* Return: 0 on success, or an error code.
	*/
	static int lwmi_gz_thermal_mode_get(struct wmi_device *wdev,
	enum thermal_mode *mode)
	{
	return lwmi_dev_evaluate_int(wdev, 0x0, LWMI_GZ_METHOD_ID_SMARTFAN_GET,
	NULL, 0, mode);
	}

	/**
	* lwmi_gz_profile_get() - Get the current platform profile.
	* @dev: the Gamezone interface parent device.
	* @profile: Pointer to provide the current platform profile with.
	*
	* Call lwmi_gz_thermal_mode_get and convert the thermal mode into a platform
	* profile based on the support level of the interface.
	*
	* Return: 0 on success, or an error code.
	*/
	static int lwmi_gz_profile_get(struct device *dev,
	enum platform_profile_option *profile)
	{
	struct lwmi_gz_priv *priv = dev_get_drvdata(dev);
	enum thermal_mode mode;
	int ret;

	ret = lwmi_gz_thermal_mode_get(priv->wdev, &mode);
	if (ret)
	return ret;

	switch (mode) {
	case LWMI_GZ_THERMAL_MODE_QUIET:
	*profile = PLATFORM_PROFILE_LOW_POWER;
	break;
	case LWMI_GZ_THERMAL_MODE_BALANCED:
	*profile = PLATFORM_PROFILE_BALANCED;
	break;
	case LWMI_GZ_THERMAL_MODE_PERFORMANCE:
	if (priv->extreme_supported) {
	*profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE;
	break;
	}
	*profile = PLATFORM_PROFILE_PERFORMANCE;
	break;
	case LWMI_GZ_THERMAL_MODE_EXTREME:
	*profile = PLATFORM_PROFILE_PERFORMANCE;
	break;
	case LWMI_GZ_THERMAL_MODE_CUSTOM:
	*profile = PLATFORM_PROFILE_CUSTOM;
	break;
	default:
	return -EINVAL;
	}

	guard(spinlock)(&priv->gz_mode_lock);
	priv->current_mode = mode;

	return 0;
	}

	/**
	* lwmi_gz_profile_set() - Set the current platform profile.
	* @dev: The Gamezone interface parent device.
	* @profile: Pointer to the desired platform profile.
	*
	* Convert the given platform profile into a thermal mode based on the support
	* level of the interface, then call the WMI method to set the thermal mode.
	*
	* Return: 0 on success, or an error code.
	*/
	static int lwmi_gz_profile_set(struct device *dev,
	enum platform_profile_option profile)
	{
	struct lwmi_gz_priv *priv = dev_get_drvdata(dev);
	struct wmi_method_args_32 args;
	enum thermal_mode mode;
	int ret;

	switch (profile) {
	case PLATFORM_PROFILE_LOW_POWER:
	mode = LWMI_GZ_THERMAL_MODE_QUIET;
	break;
	case PLATFORM_PROFILE_BALANCED:
	mode = LWMI_GZ_THERMAL_MODE_BALANCED;
	break;
	case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
	mode = LWMI_GZ_THERMAL_MODE_PERFORMANCE;
	break;
	case PLATFORM_PROFILE_PERFORMANCE:
	if (priv->extreme_supported) {
	mode = LWMI_GZ_THERMAL_MODE_EXTREME;
	break;
	}
	mode = LWMI_GZ_THERMAL_MODE_PERFORMANCE;
	break;
	case PLATFORM_PROFILE_CUSTOM:
	mode = LWMI_GZ_THERMAL_MODE_CUSTOM;
	break;
	default:
	return -EOPNOTSUPP;
	}

	args.arg0 = mode;

	ret = lwmi_dev_evaluate_int(priv->wdev, 0x0,
	LWMI_GZ_METHOD_ID_SMARTFAN_SET,
	(u8 *)&args, sizeof(args), NULL);
	if (ret)
	return ret;

	guard(spinlock)(&priv->gz_mode_lock);
	priv->current_mode = mode;

	return 0;
	}

	static const struct dmi_system_id fwbug_list[] = {
	{
	.ident = "Legion Go 8APU1",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8APU1"),
	},
	.driver_data = &quirk_no_extreme_bug,
	},
	{
	.ident = "Legion Go S 8APU1",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go S 8APU1"),
	},
	.driver_data = &quirk_no_extreme_bug,
	},
	{
	.ident = "Legion Go S 8ARP1",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go S 8ARP1"),
	},
	.driver_data = &quirk_no_extreme_bug,
	},
	{
	.ident = "Legion Go 8ASP2",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8ASP2"),
	},
	.driver_data = &quirk_no_extreme_bug,
	},
	{
	.ident = "Legion Go 8AHP2",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
	DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8AHP2"),
	},
	.driver_data = &quirk_no_extreme_bug,
	},
	{},
	};

	/**
	* lwmi_gz_extreme_supported() - Evaluate if a device supports extreme thermal mode.
	* @profile_support_ver: Version of the WMI interface.
	*
	* Determine if the extreme thermal mode is supported by the hardware.
	* Anything version 5 or lower does not. For devices with a version 6 or
	* greater do a DMI check, as some devices report a version that supports
	* extreme mode but have an incomplete entry in the BIOS. To ensure this
	* cannot be set, quirk them to prevent assignment.
	*
	* Return: bool.
	*/
	static bool lwmi_gz_extreme_supported(int profile_support_ver)
	{
	const struct dmi_system_id *dmi_id;
	struct quirk_entry *quirks;

	if (profile_support_ver < 6)
	return false;

	dmi_id = dmi_first_match(fwbug_list);
	if (!dmi_id)
	return true;

	quirks = dmi_id->driver_data;

	return quirks->extreme_supported;
	}

	/**
	* lwmi_gz_platform_profile_probe - Enable and set up the platform profile
	* device.
	* @drvdata: Driver data for the interface.
	* @choices: Container for enabled platform profiles.
	*
	* Determine if thermal mode is supported, and if so to what feature level.
	* Then enable all supported platform profiles.
	*
	* Return: 0 on success, or an error code.
	*/
	static int lwmi_gz_platform_profile_probe(void drvdata, unsigned long choices)
	{
	struct lwmi_gz_priv *priv = drvdata;
	int profile_support_ver;
	int ret;

	ret = lwmi_gz_thermal_mode_supported(priv->wdev, &profile_support_ver);
	if (ret)
	return ret;

	if (profile_support_ver < 1)
	return -ENODEV;

	set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
	set_bit(PLATFORM_PROFILE_BALANCED, choices);
	set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
	set_bit(PLATFORM_PROFILE_CUSTOM, choices);

	priv->extreme_supported = lwmi_gz_extreme_supported(profile_support_ver);
	if (priv->extreme_supported)
	set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices);

	return 0;
	}

	static const struct platform_profile_ops lwmi_gz_platform_profile_ops = {
	.probe = lwmi_gz_platform_profile_probe,
	.profile_get = lwmi_gz_profile_get,
	.profile_set = lwmi_gz_profile_set,
	};

	static int lwmi_gz_probe(struct wmi_device wdev, const void context)
	{
	struct lwmi_gz_priv *priv;
	int ret;

	priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
	return -ENOMEM;

	priv->wdev = wdev;
	dev_set_drvdata(&wdev->dev, priv);

	priv->ppdev = devm_platform_profile_register(&wdev->dev, "lenovo-wmi-gamezone",
	priv, &lwmi_gz_platform_profile_ops);
	if (IS_ERR(priv->ppdev))
	return -ENODEV;

	spin_lock_init(&priv->gz_mode_lock);

	ret = lwmi_gz_thermal_mode_get(wdev, &priv->current_mode);
	if (ret)
	return ret;

	priv->event_nb.notifier_call = lwmi_gz_event_call;
	ret = devm_lwmi_events_register_notifier(&wdev->dev, &priv->event_nb);
	if (ret)
	return ret;

	priv->mode_nb.notifier_call = lwmi_gz_mode_call;
	return devm_lwmi_om_register_notifier(&wdev->dev, &priv->mode_nb);
	}

	static const struct wmi_device_id lwmi_gz_id_table[] = {
	{ LENOVO_GAMEZONE_GUID, NULL },
	{}
	};

	static struct wmi_driver lwmi_gz_driver = {
	.driver = {
	.name = "lenovo_wmi_gamezone",
	.probe_type = PROBE_PREFER_ASYNCHRONOUS,
	},
	.id_table = lwmi_gz_id_table,
	.probe = lwmi_gz_probe,
	.no_singleton = true,
	};

	module_wmi_driver(lwmi_gz_driver);

	MODULE_IMPORT_NS("LENOVO_WMI_EVENTS");
	MODULE_IMPORT_NS("LENOVO_WMI_HELPERS");
	MODULE_IMPORT_NS("LENOVO_WMI_OTHER");
	MODULE_DEVICE_TABLE(wmi, lwmi_gz_id_table);
	MODULE_AUTHOR("Derek J. Clark <derekjohn.clark@gmail.com>");
	MODULE_DESCRIPTION("Lenovo GameZone WMI Driver");
	MODULE_LICENSE("GPL");