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[108.228.232.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22db5216ba5sm70334725ad.222.2025.04.27.18.20.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Apr 2025 18:20:46 -0700 (PDT) From: "Derek J. Clark" To: Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Cc: Armin Wolf , Jonathan Corbet , Mario Limonciello , Luke Jones , Xino Ni , Zhixin Zhang , Mia Shao , Mark Pearson , "Pierre-Loup A . Griffais" , "Cody T . -H . Chiu" , John Martens , "Derek J . Clark" , platform-driver-x86@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 5/6] platform/x86: Add Lenovo WMI Gamezone Driver Date: Sun, 27 Apr 2025 18:18:05 -0700 Message-ID: <20250428012029.970017-6-derekjohn.clark@gmail.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250428012029.970017-1-derekjohn.clark@gmail.com> References: <20250428012029.970017-1-derekjohn.clark@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Adds lenovo-wmi-gamezone driver which provides the Lenovo Gamezone WMI interface that comes on Lenovo "Gaming Series" hardware. Provides ACPI platform profiles over WMI. Signed-off-by: Derek J. Clark --- v6: - Switch to guard/scoped_guard instead of spin_lock/spin_unlock. - Fix typos and rewordings from v5 review. v5: - Move to patch 5 of the series and omit the portions of the driver that rely on Other Mode. - Rename most defines to clearly indicate they are defined in this driver. - Misc fixes from v4 review. v4: - Add notifier blocks for the Events and Other Mode drivers. - Remove notifier block chain head and all reference to Thermal Mode Event GUID. - Add header for Gamezone specific structs and functions. - Various fixes from review. v3: - Use notifier chain to report platform profile changes to any subscribed drivers. - Adds THERMAL_MODE_EVENT GUID and .notify function to trigger notifier chain. - Adds support for Extreme Mode profile on supported hardware, as well as a DMI quirk table for some devices that report extreme mode version support but so not have it fully implemented. - Update to include recent changes to platform-profile. v2: - Use devm_kmalloc to ensure driver can be instanced, remove global reference. - Ensure reverse Christmas tree for all variable declarations. - Remove extra whitespace. - Use guard(mutex) in all mutex instances, global mutex. - Use pr_fmt instead of adding the driver name to each pr_err. - Remove noisy pr_info usage. - Rename gamezone_wmi to lenovo_wmi_gz_priv and gz_wmi to priv. - Remove GZ_WMI symbol exporting. MAINTAINERS | 1 + drivers/platform/x86/Kconfig | 14 + drivers/platform/x86/Makefile | 1 + drivers/platform/x86/lenovo-wmi-gamezone.c | 374 +++++++++++++++++++++ drivers/platform/x86/lenovo-wmi-gamezone.h | 20 ++ 5 files changed, 410 insertions(+) create mode 100644 drivers/platform/x86/lenovo-wmi-gamezone.c create mode 100644 drivers/platform/x86/lenovo-wmi-gamezone.h diff --git a/MAINTAINERS b/MAINTAINERS index 1b22e41cc730..511d7547fdd9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -13167,6 +13167,7 @@ F: Documentation/wmi/devices/lenovo-wmi-other.rst F: drivers/platform/x86/lenovo-wmi-capdata01.* F: drivers/platform/x86/lenovo-wmi-events.* +F: drivers/platform/x86/lenovo-wmi-gamezone.* F: drivers/platform/x86/lenovo-wmi-helpers.* =20 LENOVO WMI HOTKEY UTILITIES DRIVER M: Jackie Dong diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 64663667f0cb..aaa1a69c10ca 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -467,6 +467,20 @@ config LENOVO_WMI_HELPERS tristate depends on ACPI_WMI =20 +config LENOVO_WMI_GAMEZONE + tristate "Lenovo GameZone WMI Driver" + depends on ACPI_WMI + depends on DMI + select ACPI_PLATFORM_PROFILE + select LENOVO_WMI_EVENTS + select LENOVO_WMI_HELPERS + help + Say Y here if you have a WMI aware Lenovo Legion device and would like = to use the + platform-profile firmware interface to manage power usage. + + To compile this driver as a module, choose M here: the module will + be called lenovo-wmi-gamezone. + config LENOVO_WMI_DATA01 tristate depends on ACPI_WMI diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 7a35c77221b7..60058b547de2 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -71,6 +71,7 @@ obj-$(CONFIG_YT2_1380) +=3D lenovo-yoga-tab2-pro-1380-fa= stcharger.o obj-$(CONFIG_LENOVO_WMI_CAMERA) +=3D lenovo-wmi-camera.o obj-$(CONFIG_LENOVO_WMI_DATA01) +=3D lenovo-wmi-capdata01.o obj-$(CONFIG_LENOVO_WMI_EVENTS) +=3D lenovo-wmi-events.o +obj-$(CONFIG_LENOVO_WMI_GAMEZONE) +=3D lenovo-wmi-gamezone.o obj-$(CONFIG_LENOVO_WMI_HELPERS) +=3D lenovo-wmi-helpers.o =20 # Intel diff --git a/drivers/platform/x86/lenovo-wmi-gamezone.c b/drivers/platform/= x86/lenovo-wmi-gamezone.c new file mode 100644 index 000000000000..713f7dbbabe2 --- /dev/null +++ b/drivers/platform/x86/lenovo-wmi-gamezone.c @@ -0,0 +1,374 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Lenovo GameZone WMI interface driver. + * + * The GameZone WMI interface provides platform profile and fan curve sett= ings + * for devices that fall under the "Gaming Series" of Lenovo Legion device= s. + * + * Copyright(C) 2025 Derek J. Clark + */ + +#include "linux/cleanup.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "lenovo-wmi-events.h" +#include "lenovo-wmi-gamezone.h" +#include "lenovo-wmi-helpers.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 + +static BLOCKING_NOTIFIER_HEAD(gz_chain_head); +static DEFINE_SPINLOCK(gz_mode_lock); /* lwmi_gz_priv.current_mode RW lock= */ + +struct lwmi_gz_priv { + enum thermal_mode current_mode; + struct notifier_block event_nb; + struct notifier_block mode_nb; + struct wmi_device *wdev; + int extreme_supported; + struct device *ppdev; +}; + +struct quirk_entry { + int extreme_supported; +}; + +static struct quirk_entry quirk_no_extreme_bug =3D { + .extreme_supported =3D false, +}; + +/** + * lwmi_gz_event_call() - Call method for lenovo-wmi-events driver notifie= r. + * 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_profi= le + * 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 =3D data; + struct lwmi_gz_priv *priv; + + priv =3D container_of(nb, struct lwmi_gz_priv, event_nb); + + switch (cmd) { + case LWMI_EVENT_THERMAL_MODE: + scoped_guard(spinlock, &gz_mode_lock) { + priv->current_mode =3D *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, + 0, 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, + 0, 0, mode); +} + +/** + * lwmi_gz_profile_get_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 platf= orm + * 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 =3D dev_get_drvdata(dev); + enum thermal_mode mode; + int ret; + + ret =3D lwmi_gz_thermal_mode_get(priv->wdev, &mode); + if (ret) + return ret; + + switch (mode) { + case LWMI_GZ_THERMAL_MODE_QUIET: + *profile =3D PLATFORM_PROFILE_LOW_POWER; + break; + case LWMI_GZ_THERMAL_MODE_BALANCED: + *profile =3D PLATFORM_PROFILE_BALANCED; + break; + case LWMI_GZ_THERMAL_MODE_PERFORMANCE: + if (priv->extreme_supported) { + *profile =3D PLATFORM_PROFILE_BALANCED_PERFORMANCE; + break; + } + *profile =3D PLATFORM_PROFILE_PERFORMANCE; + break; + case LWMI_GZ_THERMAL_MODE_EXTREME: + *profile =3D PLATFORM_PROFILE_PERFORMANCE; + break; + case LWMI_GZ_THERMAL_MODE_CUSTOM: + *profile =3D PLATFORM_PROFILE_CUSTOM; + break; + default: + return -EINVAL; + } + + guard(spinlock)(&gz_mode_lock); + priv->current_mode =3D mode; + + return 0; +} + +/** + * lwmi_gz_profile_get_get() - 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 sup= port + * level of the interface, then call the WMI method to set the thermal mod= e. + * + * 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 =3D dev_get_drvdata(dev); + struct wmi_method_args_32 args; + enum thermal_mode mode; + int ret; + + switch (profile) { + case PLATFORM_PROFILE_LOW_POWER: + mode =3D LWMI_GZ_THERMAL_MODE_QUIET; + break; + case PLATFORM_PROFILE_BALANCED: + mode =3D LWMI_GZ_THERMAL_MODE_BALANCED; + break; + case PLATFORM_PROFILE_BALANCED_PERFORMANCE: + mode =3D LWMI_GZ_THERMAL_MODE_PERFORMANCE; + break; + case PLATFORM_PROFILE_PERFORMANCE: + if (priv->extreme_supported) { + mode =3D LWMI_GZ_THERMAL_MODE_EXTREME; + break; + } + mode =3D LWMI_GZ_THERMAL_MODE_PERFORMANCE; + break; + case PLATFORM_PROFILE_CUSTOM: + mode =3D LWMI_GZ_THERMAL_MODE_CUSTOM; + break; + default: + return -EOPNOTSUPP; + } + + args.arg0 =3D mode; + + ret =3D lwmi_dev_evaluate_int(priv->wdev, 0x0, + LWMI_GZ_METHOD_ID_SMARTFAN_SET, + (u8 *)&args, sizeof(args), NULL); + if (ret) + return ret; + + guard(spinlock)(&gz_mode_lock); + priv->current_mode =3D mode; + + return 0; +} + +static const struct dmi_system_id fwbug_list[] =3D { + { + .ident =3D "Legion Go 8APU1", + .matches =3D { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go 8APU1"), + }, + .driver_data =3D &quirk_no_extreme_bug, + }, + { + .ident =3D "Legion Go S 8APU1", + .matches =3D { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go S 8APU1"), + }, + .driver_data =3D &quirk_no_extreme_bug, + }, + { + .ident =3D "Legion Go S 8ARP1", + .matches =3D { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Legion Go S 8ARP1"), + }, + .driver_data =3D &quirk_no_extreme_bug, + }, + {}, + +}; + +/** + * lwmi_gz_extreme_supported() - Evaluate if a device supports extreme the= rmal 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 wuth 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: int. + */ +static int 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 =3D dmi_first_match(fwbug_list); + if (!dmi_id) + return true; + + quirks =3D 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 *ch= oices) +{ + struct lwmi_gz_priv *priv =3D drvdata; + int profile_support_ver; + int ret; + + ret =3D lwmi_gz_thermal_mode_supported(priv->wdev, &profile_support_ver); + if (ret) + return ret; + + if (profile_support_ver < 1) + return -ENODEV; + + priv->extreme_supported =3D lwmi_gz_extreme_supported(profile_support_ver= ); + + 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); + + if (priv->extreme_supported) + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices); + + return 0; +} + +static const struct platform_profile_ops lwmi_gz_platform_profile_ops =3D { + .probe =3D lwmi_gz_platform_profile_probe, + .profile_get =3D lwmi_gz_profile_get, + .profile_set =3D lwmi_gz_profile_set, +}; + +static int lwmi_gz_probe(struct wmi_device *wdev, const void *context) +{ + struct lwmi_gz_priv *priv; + int ret; + + priv =3D devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->wdev =3D wdev; + dev_set_drvdata(&wdev->dev, priv); + + priv->ppdev =3D platform_profile_register(&wdev->dev, + "lenovo-wmi-gamezone", priv, + &lwmi_gz_platform_profile_ops); + + if (IS_ERR(priv->ppdev)) + return -ENODEV; + + ret =3D lwmi_gz_thermal_mode_get(wdev, &priv->current_mode); + if (ret) + return ret; + + priv->event_nb.notifier_call =3D lwmi_gz_event_call; + ret =3D devm_lwmi_events_register_notifier(&wdev->dev, &priv->event_nb); + if (ret) + return ret; + + return 0; +} + +static const struct wmi_device_id lwmi_gz_id_table[] =3D { + { LENOVO_GAMEZONE_GUID, NULL }, + {} +}; + +static struct wmi_driver lwmi_gz_driver =3D { + .driver =3D { + .name =3D "lenovo_wmi_gamezone", + .probe_type =3D PROBE_PREFER_ASYNCHRONOUS, + }, + .id_table =3D lwmi_gz_id_table, + .probe =3D lwmi_gz_probe, + .no_singleton =3D true, +}; + +module_wmi_driver(lwmi_gz_driver); + +MODULE_IMPORT_NS("LENOVO_WMI_EVENTS"); +MODULE_IMPORT_NS("LENOVO_WMI_HELPERS"); +MODULE_DEVICE_TABLE(wmi, lwmi_gz_id_table); +MODULE_AUTHOR("Derek J. Clark "); +MODULE_DESCRIPTION("Lenovo GameZone WMI Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/platform/x86/lenovo-wmi-gamezone.h b/drivers/platform/= x86/lenovo-wmi-gamezone.h new file mode 100644 index 000000000000..75ef16bf0798 --- /dev/null +++ b/drivers/platform/x86/lenovo-wmi-gamezone.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +/* Copyright(C) 2025 Derek J. Clark */ + +#ifndef _LENOVO_WMI_GAMEZONE_H_ +#define _LENOVO_WMI_GAMEZONE_H_ + +enum gamezone_events_type { + LWMI_GZ_GET_THERMAL_MODE =3D 1, +}; + +enum thermal_mode { + LWMI_GZ_THERMAL_MODE_QUIET =3D 0x01, + LWMI_GZ_THERMAL_MODE_BALANCED =3D 0x02, + LWMI_GZ_THERMAL_MODE_PERFORMANCE =3D 0x03, + LWMI_GZ_THERMAL_MODE_EXTREME =3D 0xE0, /* Ver 6+ */ + LWMI_GZ_THERMAL_MODE_CUSTOM =3D 0xFF, +}; + +#endif /* !_LENOVO_WMI_GAMEZONE_H_ */ --=20 2.49.0