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Message-ID: <20241217230645.15027-2-derekjohn.clark@gmail.com>
Date: Tue, 17 Dec 2024 15:06:45 -0800
From: "Derek J. Clark" <derekjohn.clark@...il.com>
To: Hans de Goede <hdegoede@...hat.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
Jonathan Corbet <corbet@....net>,
Mario Limonciello <superm1@...nel.org>,
Luke Jones <luke@...nes.dev>,
Xino Ni <nijs1@...ovo.com>,
Zhixin Zhang <zhangzx36@...ovo.com>,
Mia Shao <shaohz1@...ovo.com>,
Mark Pearson <mpearson-lenovo@...ebb.ca>,
"Pierre-Loup A . Griffais" <pgriffais@...vesoftware.com>,
"Derek J . Clark" <derekjohn.clark@...il.com>,
platform-driver-x86@...r.kernel.org,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] platform/x86: Add lenovo-legion-wmi drivers
Adds lenovo-legion-wmi.h which provides templates and some method
implementations used by the lenovo-legion-wmi driver series.
Adds lenovo-legion-wmi-gamezone.c which provides a driver for the Lenovo
GameZone WMI interface that comes on Lenovo "Gaming Series" hardware.
Provides ACPI platform profiles over WMI.
Adds lenovo-legion-wmi-other.c which provides a driver for the Lenovo
"Other Method" WMI interface that comes on some Lenovo hardware.
Provides a firmware-attributes class which enables the use of tunable
knobs for SPL, SPPT, and FPPT.
Adds lenovo-legion-wmi-capdata01.c which provides a driver for the
LENOVO_CAPABILITY_DATA_01 WMI data block that comes on "Other Method"
enabled hardware. Provides an interface for querying if a given
attribute is supported by the hardware, as well as its default_value,
max_value, min_value, and step increment.
Adds lenovo-legion-wmi.rst describing the available drivers and their
function.
Updates Kconfig, Makefile, and MAINTAINERS to include the new drivers.
Signed-off-by: Derek J. Clark <derekjohn.clark@...il.com>
---
.../wmi/devices/lenovo-legion-wmi.rst | 79 ++++
MAINTAINERS | 9 +
drivers/platform/x86/Kconfig | 35 ++
drivers/platform/x86/Makefile | 21 +-
.../x86/lenovo-legion-wmi-capdata01.c | 103 +++++
.../platform/x86/lenovo-legion-wmi-gamezone.c | 233 +++++++++++
.../platform/x86/lenovo-legion-wmi-other.c | 377 ++++++++++++++++++
drivers/platform/x86/lenovo-legion-wmi.h | 271 +++++++++++++
8 files changed, 1119 insertions(+), 9 deletions(-)
create mode 100644 Documentation/wmi/devices/lenovo-legion-wmi.rst
create mode 100644 drivers/platform/x86/lenovo-legion-wmi-capdata01.c
create mode 100644 drivers/platform/x86/lenovo-legion-wmi-gamezone.c
create mode 100644 drivers/platform/x86/lenovo-legion-wmi-other.c
create mode 100644 drivers/platform/x86/lenovo-legion-wmi.h
diff --git a/Documentation/wmi/devices/lenovo-legion-wmi.rst b/Documentation/wmi/devices/lenovo-legion-wmi.rst
new file mode 100644
index 000000000000..37b09c82c980
--- /dev/null
+++ b/Documentation/wmi/devices/lenovo-legion-wmi.rst
@@ -0,0 +1,79 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+======================================================
+Lenovo Legion WMI Interface Driver (lenovo-legion-wmi)
+======================================================
+
+Introduction
+============
+The Lenovo Legion WMI interface is broken up into multiple GUID interfaces that
+require cross-references between GUID's for some functionality. The "Custom
+Mode" interface is a legacy interface for managing and displaying CPU & GPU
+power and hwmon settings and readings. The "Other Mode" interface is a modern
+interface that replaces "Custom Mode" interface methods. The "GameZone"
+interface adds advanced features such as fan profiles and overclocking. The
+"Lighting" interface adds control of various status lights related to different
+hardware components.
+
+Each of these interfaces has a different data structure associated with it that
+provide detailed information about each attribute provided by the interface.
+These data structs are retrieved from an additional WMI device data block GUID:
+ - The "Custom Mode" interface uses LENOVO_CAPABILITY_DATA_00
+ - The "Other Mode" interface uses LENOVO_CAPABILITY_DATA_01
+ - The "Lighting" interface uses LENOVO_CAPABILITY_DATA_02
+
+.. note::
+ Currently only the "Gamezone", "Other Mode", and LENOVO_CAPABILITY_DATA_01
+ interfaces are implemented by this driver.
+
+
+GameZone
+--------
+The GameZone WMI interface provides ACPI platform profile and fan curve
+settings for devices that fall under the "Gaming Series" of Lenovo Legion
+devices.
+
+The following platform profiles are supported:
+ - quiet
+ - balanced
+ - performance
+ - custom
+
+Custom Profile
+~~~~~~~~~~~~~~
+The custom profile is enabled but is not user selectable. This setting
+represents a hardware mode on Lenovo Legion devices that enables user
+modifications to Package Power Tracking settings. When an attribute exposed
+by the "Other Mode" WMI Interface is modified, the GameZone driver will switch
+to this profile automatically.
+
+
+Other Mode
+----------
+The Other Mode WMI interface uses the fw_attributes class to expose various
+WMI functions provided by the interface in the sysfs. This enables CPU and GPU
+power limit tuning as well as various other attributes for devices that fall
+under the "Gaming Series" of Lenovo Legion devices. Each attribute exposed by
+the "Other Method" interface has corresponding LENOVO_CAPABILITY_DATA_01 pages
+that allow the driver to probe details about the attribute. Each attibute has
+multiple pages, one for each of the platform profiles managed by the "GameZone"
+interface, so it must be probed prior to returning the current_value. For
+read-only properties, only the "Custom" profile values are reported to ensure
+any userspace applications reading them have accurate tunable value ranges.
+Attributes are exposed in sysfs under the following path:
+/sys/class/firmware-attributes/lenovo-legion-wmi/attributes
+
+Supported Attibutes
+~~~~~~~~~~~~~~~~~~~
+The following attributes are supported:
+ - ppt_pl1_spl: Platform Profile Tracking Sustained Power Limit
+ - ppt_pl2_sppt: Platform Profile Tracking Slow Package Power Tracking
+ - ppt_pl3_fppt: Platform Profile Tracking Fast Package Power Tracking
+
+Each attribute has the following properties:
+ - current_value
+ - default_value
+ - display_name
+ - max_value
+ - min_value
+ - scalar_increment
+ - type
diff --git a/MAINTAINERS b/MAINTAINERS
index baf0eeb9a355..67f7b588aa36 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13034,6 +13034,15 @@ S: Maintained
W: http://legousb.sourceforge.net/
F: drivers/usb/misc/legousbtower.c
+LENOVO LEGION WMI driver
+M: Derek J. Clark <derekjohn.clark@...il.com>
+L: platform-driver-x86@...r.kernel.org
+S: Maintained
+F: drivers/platform/x86/lenovo-legion-wmi-capdata01.c
+F: drivers/platform/x86/lenovo-legion-wmi-gamezone.c
+F: drivers/platform/x86/lenovo-legion-wmi-other.c
+F: drivers/platform/x86/lenovo-legion-wmi.h
+
LETSKETCH HID TABLET DRIVER
M: Hans de Goede <hdegoede@...hat.com>
L: linux-input@...r.kernel.org
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 0258dd879d64..a51a1a2fe7ba 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -459,6 +459,41 @@ config IBM_RTL
state = 0 (BIOS SMIs on)
state = 1 (BIOS SMIs off)
+config LEGION_GAMEZONE_WMI
+ tristate "Lenovo Legion GameZone WMI Driver"
+ depends on ACPI_WMI
+ select ACPI_PLATFORM_PROFILE
+ help
+ Say Y here if you have a WMI aware Lenovo Legion device and would like to use the
+ platform-profile firmware interface.
+
+ To compile this driver as a module, choose M here: the module will
+ be called lenovo_legion_wmi_gamezone.
+
+config LEGION_DATA_01_WMI
+ tristate "Lenovo Legion WMI capability Data 01 Driver"
+ depends on ACPI_WMI
+ help
+ Say Y here if you have a WMI aware Lenovo Legion device in the "Gaming Series"
+ line of hardware. This interface is a dependency for exposing tunable power
+ settings.
+
+ To compile this driver as a module, choose M here: the module will
+ be called lenovo_legion_wmi_capdata01.
+
+config LEGION_OTHER_WMI
+ tristate "Lenovo Legion Other Method WMI Driver"
+ depends on LEGION_GAMEZONE_WMI
+ depends on LEGION_DATA_01_WMI
+ select FW_ATTR_CLASS
+ help
+ Say Y here if you have a WMI aware Lenovo Legion device and would like to use the
+ firmware_attributes API to control various tunable settings typically exposed by
+ Lenovo software in Windows.
+
+ To compile this driver as a module, choose M here: the module will
+ be called lenovo_legion_wmi_other.
+
config IDEAPAD_LAPTOP
tristate "Lenovo IdeaPad Laptop Extras"
depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index e1b142947067..838ee568c3f9 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -59,15 +59,18 @@ obj-$(CONFIG_X86_PLATFORM_DRIVERS_HP) += hp/
obj-$(CONFIG_UV_SYSFS) += uv_sysfs.o
# IBM Thinkpad and Lenovo
-obj-$(CONFIG_IBM_RTL) += ibm_rtl.o
-obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
-obj-$(CONFIG_LENOVO_YMC) += lenovo-ymc.o
-obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o
-obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
-obj-$(CONFIG_THINKPAD_LMI) += think-lmi.o
-obj-$(CONFIG_YOGABOOK) += lenovo-yogabook.o
-obj-$(CONFIG_YT2_1380) += lenovo-yoga-tab2-pro-1380-fastcharger.o
-obj-$(CONFIG_LENOVO_WMI_CAMERA) += lenovo-wmi-camera.o
+obj-$(CONFIG_IBM_RTL) += ibm_rtl.o
+obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
+obj-$(CONFIG_LENOVO_YMC) += lenovo-ymc.o
+obj-$(CONFIG_SENSORS_HDAPS) += hdaps.o
+obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
+obj-$(CONFIG_THINKPAD_LMI) += think-lmi.o
+obj-$(CONFIG_YOGABOOK) += lenovo-yogabook.o
+obj-$(CONFIG_YT2_1380) += lenovo-yoga-tab2-pro-1380-fastcharger.o
+obj-$(CONFIG_LENOVO_WMI_CAMERA) += lenovo-wmi-camera.o
+obj-$(CONFIG_LEGION_GAMEZONE_WMI) += lenovo-legion-wmi-gamezone.o
+obj-$(CONFIG_LEGION_DATA_01_WMI) += lenovo-legion-wmi-capdata01.o
+obj-$(CONFIG_LEGION_OTHER_WMI) += lenovo-legion-wmi-other.o
# Intel
obj-y += intel/
diff --git a/drivers/platform/x86/lenovo-legion-wmi-capdata01.c b/drivers/platform/x86/lenovo-legion-wmi-capdata01.c
new file mode 100644
index 000000000000..99f4f35b7176
--- /dev/null
+++ b/drivers/platform/x86/lenovo-legion-wmi-capdata01.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * LENOVO_CAPABILITY_DATA_01 WMI data block driver. This interface provides
+ * information on tunable attributes used by the "Other Method" WMI interface,
+ * including if it is supported by the hardware, the default_value, max_value,
+ * min_value, and step increment.
+ *
+ * Copyright(C) 2024 Derek J. Clark <derekjohn.clark@...il.com>
+ *
+ */
+
+#include "lenovo-legion-wmi.h"
+
+#define LENOVO_CAPABILITY_DATA_01_GUID "7A8F5407-CB67-4D6E-B547-39B3BE018154"
+
+static const struct wmi_device_id capdata_01_wmi_id_table[] = {
+ { LENOVO_CAPABILITY_DATA_01_GUID, NULL },
+ {}
+};
+
+static struct capdata_wmi cd01_wmi = {
+ .mutex = __MUTEX_INITIALIZER(cd01_wmi.mutex)
+};
+
+int capdata_01_wmi_get(struct om_attribute_id attr_id,
+ struct capability_data_01 *cap_data)
+{
+ union acpi_object *ret_obj;
+ int count;
+ int instance_id;
+ u32 attribute_id = *(int *)&attr_id;
+
+ mutex_lock(&cd01_wmi.mutex);
+ count = wmidev_instance_count(drvdata.cd01_wmi->wdev);
+ mutex_unlock(&cd01_wmi.mutex);
+ for (instance_id = 0; instance_id < count; instance_id++) {
+ mutex_lock(&cd01_wmi.mutex);
+ ret_obj =
+ wmidev_block_query(drvdata.cd01_wmi->wdev, instance_id);
+ mutex_unlock(&cd01_wmi.mutex);
+ if (!ret_obj) {
+ pr_err("lenovo_legion_wmi_capdata_01: block query failed\n");
+ continue;
+ }
+
+ if (ret_obj->type != ACPI_TYPE_BUFFER) {
+ pr_err("lenovo_legion_wmi_capdata_01: block query returned type: %u\n",
+ ret_obj->type);
+ kfree(ret_obj);
+ continue;
+ }
+
+ if (ret_obj->buffer.length != sizeof(*cap_data)) {
+ pr_err("lenovo_legion_wmi_capdata_01: bad buffer length, %d\n",
+ ret_obj->buffer.length);
+ kfree(ret_obj);
+ continue;
+ }
+
+ memcpy(cap_data, ret_obj->buffer.pointer,
+ ret_obj->buffer.length);
+ kfree(ret_obj);
+
+ if (cap_data->id != attribute_id)
+ continue;
+ break;
+ }
+ if (cap_data->id == 0) {
+ pr_err("lenovo_legion_wmi_capdata_01: Failed to get capability data.\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(capdata_01_wmi_get, "CAPDATA_WMI");
+
+/* Driver Setup */
+static int capdata_01_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ cd01_wmi.wdev = wdev;
+ drvdata.cd01_wmi = &cd01_wmi;
+ pr_info("lenovo_legion_wmi_capdata_01: Added Lenovo Capability Data 01 WMI interface.\n");
+
+ return 0;
+}
+
+static void capdata_01_wmi_remove(struct wmi_device *wdev)
+{
+ pr_info("lenovo_legion_wmi_capdata_01: Removed Lenovo Capability Data 01 WMI interface.\n");
+}
+
+static struct wmi_driver capdata_01_wmi_driver = {
+ .driver = { .name = "capdata_01_wmi" },
+ .id_table = capdata_01_wmi_id_table,
+ .probe = capdata_01_wmi_probe,
+ .remove = capdata_01_wmi_remove,
+};
+
+module_wmi_driver(capdata_01_wmi_driver);
+
+MODULE_DEVICE_TABLE(wmi, capdata_01_wmi_id_table);
+MODULE_AUTHOR("Derek J. Clark <derekjohn.clark@...il.com>");
+MODULE_DESCRIPTION("Lenovo Capability Data 01 WMI Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/lenovo-legion-wmi-gamezone.c b/drivers/platform/x86/lenovo-legion-wmi-gamezone.c
new file mode 100644
index 000000000000..2f976dc0e367
--- /dev/null
+++ b/drivers/platform/x86/lenovo-legion-wmi-gamezone.c
@@ -0,0 +1,233 @@
+// 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) 2024 Derek J. Clark <derekjohn.clark@...il.com>
+ *
+ */
+
+#include "lenovo-legion-wmi.h"
+
+#define LENOVO_GAMEZONE_GUID "887B54E3-DDDC-4B2C-8B88-68A26A8835D0"
+
+/* Method IDs */
+#define WMI_METHOD_ID_SMARTFAN_SUPP 43 /* IsSupportSmartFan */
+#define WMI_METHOD_ID_SMARTFAN_SET 44 /* SetSmartFanMode */
+#define WMI_METHOD_ID_SMARTFAN_GET 45 /* GetSmartFanMode */
+
+static const struct wmi_device_id gamezone_wmi_id_table[] = {
+ { LENOVO_GAMEZONE_GUID, NULL }, /* LENOVO_GAMEZONE_DATA */
+ {}
+};
+
+static struct gamezone_wmi gz_wmi = {
+ .mutex = __MUTEX_INITIALIZER(gz_wmi.mutex)
+};
+
+/* Platform Profile Methods */
+static int
+gamezone_wmi_platform_profile_supported(struct platform_profile_handler *pprof,
+ int *supported)
+{
+ int ret;
+
+ mutex_lock(&gz_wmi.mutex);
+ ret = lenovo_legion_evaluate_method_1(drvdata.gz_wmi->wdev, 0x0,
+ WMI_METHOD_ID_SMARTFAN_SUPP, 0,
+ supported);
+ mutex_unlock(&gz_wmi.mutex);
+ return ret;
+}
+
+int gamezone_wmi_fan_profile_get(struct platform_profile_handler *pprof,
+ int *sel_prof)
+{
+ int ret;
+ int supported;
+
+ gamezone_wmi_platform_profile_supported(&drvdata.gz_wmi->pprof,
+ &supported);
+ if (!supported) {
+ pr_err("lenovo_legion_wmi_gamezone: Platform profiles are not supported by this device.\n");
+ return -EOPNOTSUPP;
+ }
+ mutex_lock(&gz_wmi.mutex);
+ ret = lenovo_legion_evaluate_method_1(drvdata.gz_wmi->wdev, 0x0,
+ WMI_METHOD_ID_SMARTFAN_GET, 0,
+ sel_prof);
+ mutex_unlock(&gz_wmi.mutex);
+ return ret;
+}
+EXPORT_SYMBOL_NS_GPL(gamezone_wmi_fan_profile_get, "GZ_WMI");
+
+static int
+gamezone_wmi_platform_profile_get(struct platform_profile_handler *pprof,
+ enum platform_profile_option *profile)
+{
+ int sel_prof;
+ int err;
+
+ err = gamezone_wmi_fan_profile_get(pprof, &sel_prof);
+ if (err)
+ return err;
+
+ switch (sel_prof) {
+ case SMARTFAN_MODE_QUIET:
+ *profile = PLATFORM_PROFILE_QUIET;
+ break;
+ case SMARTFAN_MODE_BALANCED:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ break;
+ case SMARTFAN_MODE_PERFORMANCE:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ break;
+ case SMARTFAN_MODE_CUSTOM:
+ *profile = PLATFORM_PROFILE_CUSTOM;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ drvdata.gz_wmi->current_profile = *profile;
+
+ return 0;
+}
+
+int gamezone_wmi_platform_profile_set(struct platform_profile_handler *pprof,
+ enum platform_profile_option profile)
+{
+ int ret;
+ int sel_prof;
+ int supported;
+
+ gamezone_wmi_platform_profile_supported(&drvdata.gz_wmi->pprof,
+ &supported);
+ if (!supported) {
+ pr_err("lenovo_legion_wmi_gamezone: Platform profiles are not supported by this device.\n");
+ return -EOPNOTSUPP;
+ }
+
+ switch (profile) {
+ case PLATFORM_PROFILE_QUIET:
+ sel_prof = SMARTFAN_MODE_QUIET;
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ sel_prof = SMARTFAN_MODE_BALANCED;
+ break;
+ case PLATFORM_PROFILE_PERFORMANCE:
+ sel_prof = SMARTFAN_MODE_PERFORMANCE;
+ break;
+ case PLATFORM_PROFILE_CUSTOM:
+ sel_prof = SMARTFAN_MODE_CUSTOM;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(&gz_wmi.mutex);
+ ret = lenovo_legion_evaluate_method_1(drvdata.gz_wmi->wdev, 0x0,
+ WMI_METHOD_ID_SMARTFAN_SET,
+ sel_prof, NULL);
+ mutex_unlock(&gz_wmi.mutex);
+
+ if (ret) {
+ pr_err("lenovo_legion_wmi_gamezone: Failed to set platform profile.\n");
+ return ret;
+ }
+
+ drvdata.gz_wmi->current_profile = profile;
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(gamezone_wmi_platform_profile_set, "GZ_WMI");
+
+/* Driver Setup */
+static int platform_profile_setup(struct gamezone_wmi *gz_wmi)
+{
+ int err;
+ int supported;
+
+ gamezone_wmi_platform_profile_supported(&gz_wmi->pprof, &supported);
+
+ gz_wmi->platform_profile_support = supported;
+
+ if (!supported) {
+ pr_warn("lenovo_legion_wmi_gamezone: Platform profiles are not supported by this device.\n");
+ return -EOPNOTSUPP;
+ }
+
+ gz_wmi->pprof.profile_get = gamezone_wmi_platform_profile_get;
+ gz_wmi->pprof.profile_set = gamezone_wmi_platform_profile_set;
+
+ set_bit(PLATFORM_PROFILE_QUIET, gz_wmi->pprof.choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, gz_wmi->pprof.choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, gz_wmi->pprof.choices);
+ set_bit(PLATFORM_PROFILE_CUSTOM, gz_wmi->pprof.choices);
+
+ err = gamezone_wmi_platform_profile_get(&gz_wmi->pprof,
+ &gz_wmi->current_profile);
+ if (err) {
+ pr_err("lenovo_legion_wmi_gamezone: Failed to get current platform profile: %d\n",
+ err);
+ return err;
+ }
+
+ err = platform_profile_register(&gz_wmi->pprof);
+ if (err) {
+ pr_err("lenovo_legion_wmi_gamezone: Failed to register platform profile support: %d\n",
+ err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int gamezone_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ int err;
+
+ gz_wmi.wdev = wdev;
+ drvdata.gz_wmi = &gz_wmi;
+
+ err = platform_profile_setup(&gz_wmi);
+ if (err) {
+ pr_err("lenovo_legion_wmi_gamezone: Failed to add platform profile: %d\n",
+ err);
+ kfree(&gz_wmi);
+ return err;
+ }
+
+ pr_info("lenovo_legion_wmi_gamezone: Added platform profile support.\n");
+ return 0;
+}
+
+static void gamezone_wmi_remove(struct wmi_device *wdev)
+{
+ int err;
+
+ mutex_lock(&gz_wmi.mutex);
+ err = platform_profile_remove(&drvdata.gz_wmi->pprof);
+ mutex_unlock(&gz_wmi.mutex);
+
+ if (err) {
+ pr_err("lenovo_legion_wmi_gamezone: Failed to remove platform profile: %d\n",
+ err);
+ } else {
+ pr_info("lenovo_legion_wmi_gamezone: Removed platform profile support.\n");
+ }
+}
+
+static struct wmi_driver gamezone_wmi_driver = {
+ .driver = { .name = "gamezone_wmi" },
+ .id_table = gamezone_wmi_id_table,
+ .probe = gamezone_wmi_probe,
+ .remove = gamezone_wmi_remove,
+};
+
+module_wmi_driver(gamezone_wmi_driver);
+
+MODULE_DEVICE_TABLE(wmi, gamezone_wmi_id_table);
+MODULE_AUTHOR("Derek J. Clark <derekjohn.clark@...il.com>");
+MODULE_DESCRIPTION("Lenovo GameZone WMI Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/lenovo-legion-wmi-other.c b/drivers/platform/x86/lenovo-legion-wmi-other.c
new file mode 100644
index 000000000000..c09c1848eda7
--- /dev/null
+++ b/drivers/platform/x86/lenovo-legion-wmi-other.c
@@ -0,0 +1,377 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Lenovo Legion Other Method driver. This driver uses the fw_attributes
+ * class to expose the various WMI functions provided by the "Other Method" WMI
+ * interface. This enables CPU and GPU power limit as well as various other
+ * attributes for devices that fall under the "Gaming Series" of Lenovo Legion
+ * devices. Each attribute exposed by the "Other Method"" interface has a
+ * corresponding LENOVO_CAPABILITY_DATA_01 struct that allows the driver to
+ * probe details about the attribute such as set/get support, step, min, max,
+ * and default value. Each attibute has multiple pages, one for each of the
+ * fan profiles managed by the GameZone interface, so it must be probed prior
+ * to returning the current_value.
+ *
+ * These attributes typically don't fit anywhere else in the sysfs and are set
+ * in Windows using one of Lenovo's multiple user applications.
+ *
+ * Copyright(C) 2024 Derek J. Clark <derekjohn.clark@...il.com>
+ *
+ */
+
+#include "lenovo-legion-wmi.h"
+#include "firmware_attributes_class.h"
+
+#define LENOVO_OTHER_METHOD_GUID "DC2A8805-3A8C-41BA-A6F7-092E0089CD3B"
+
+/* Device IDs */
+#define WMI_DEVICE_ID_CPU 0x01
+
+/* WMI_DEVICE_ID_CPU feature IDs */
+#define WMI_FEATURE_ID_CPU_SPPT 0x01 /* Short Term Power Limit */
+#define WMI_FEATURE_ID_CPU_SPL 0x02 /* Peak Power Limit */
+#define WMI_FEATURE_ID_CPU_FPPT 0x03 /* Long Term Power Limit */
+
+/* Method IDs */
+#define WMI_METHOD_ID_VALUE_GET 17 /* Other Method Getter */
+#define WMI_METHOD_ID_VALUE_SET 18 /* Other Method Setter */
+
+static const struct wmi_device_id other_method_wmi_id_table[] = {
+ { LENOVO_OTHER_METHOD_GUID, NULL },
+ {}
+};
+
+/* Tunable Attributes */
+struct ll_tunables {
+ u32 ppt_pl1_spl;
+ u32 ppt_pl2_sppt;
+ u32 ppt_pl3_fppt;
+};
+
+static const struct class *fw_attr_class;
+
+static struct other_method_wmi om_wmi = {
+ .mutex = __MUTEX_INITIALIZER(om_wmi.mutex)
+};
+
+struct capdata_01_attr_group {
+ const struct attribute_group *attr_group;
+};
+
+/* Simple attribute creation */
+
+/*
+ * att_current_value_store() - Set the current value of the given attribute
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to read from, this is parsed to `int` type.
+ * @count: Required by sysfs attribute macros, pass in from the callee attr.
+ * @store_value: Pointer to where the parsed value should be stored.
+ * @device_id: The WMI function Device ID to use.
+ * @feature_id: The WMI function Feature ID to use.
+ *
+ * This function is intended to be generic so it can be called from any
+ * attribute's "current_value_store" which works only with integers. The
+ * integer to be sent to the WMI method is range checked and an error returned
+ * if out of range.
+ *
+ * If the value is valid and WMI is success, then the sysfs attribute is
+ * notified.
+ *
+ * Returns: Either count, or an error.
+ */
+ssize_t attr_current_value_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf,
+ size_t count, u32 *store_value, u8 device_id,
+ u8 feature_id)
+{
+ struct capability_data_01 cap_data;
+ enum platform_profile_option cust_prof;
+ int err;
+ int sel_prof;
+ u32 value;
+ struct wmi_device *wdev = drvdata.om_wmi->wdev;
+
+ err = gamezone_wmi_fan_profile_get(&drvdata.gz_wmi->pprof, &sel_prof);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Error getting gamezone fan profile.\n");
+ return -EIO;
+ }
+
+ /* Switch to custom profile if not currently on it. */
+ if (sel_prof != SMARTFAN_MODE_CUSTOM) {
+ pr_warn("lenovo_legion_wmi_other: Device must be in CUSTOM profile to set tunables.");
+ cust_prof = PLATFORM_PROFILE_CUSTOM;
+ sel_prof = SMARTFAN_MODE_CUSTOM;
+ err = gamezone_wmi_platform_profile_set(&drvdata.gz_wmi->pprof,
+ cust_prof);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Error setting gamezone fan profile.\n");
+ return -EIO;
+ }
+ }
+
+ err = kstrtouint(buf, 10, &value);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Error converting value to int.\n");
+ return -EIO;
+ }
+
+ /* Construct the attribute id */
+ struct om_attribute_id attr_id = { sel_prof << 8, feature_id,
+ device_id };
+
+ /* Get min/max from LENOVO_CAPABILITY_DATA_01 */
+ err = capdata_01_wmi_get(attr_id, &cap_data);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Failed to get capability data.\n");
+ return -EIO;
+ }
+ if (cap_data.capability < 1) {
+ pr_err("lenovo_legion_wmi_other: Capability not supported.\n");
+ return -EPERM;
+ }
+
+ if (value < cap_data.min_value || value > cap_data.max_value) {
+ pr_warn("lenovo_legion_wmi_other: Value %d is not between %d and %d.\n",
+ value, cap_data.min_value, cap_data.max_value);
+ return -EINVAL;
+ }
+
+ mutex_lock(&om_wmi.mutex);
+ err = lenovo_legion_evaluate_method_2(wdev, 0x0,
+ WMI_METHOD_ID_VALUE_SET,
+ *(int *)&attr_id, value, NULL);
+ mutex_unlock(&om_wmi.mutex);
+
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Error setting attribute");
+ return err;
+ }
+
+ if (store_value)
+ *store_value = value;
+
+ sysfs_notify(kobj, NULL, attr->attr.name);
+ return count;
+}
+
+/*
+ * attr_current_value_show() - Get the current value of the given attribute
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to write to.
+ * @retval: Pointer to returned data.
+ * @device_id: The WMI function Device ID to use.
+ * @feature_id: The WMI function Feature ID to use.
+ *
+ * This function is intended to be generic so it can be called from any "_show"
+ * attribute which works only with integers.
+ *
+ * If the WMI is success, then the sysfs attribute is notified.
+ *
+ * Returns: Either count, or an error.
+ */
+ssize_t attr_current_value_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf,
+ u8 device_id, u8 feature_id)
+{
+ int sel_prof; /* Current fan profile mode */
+ int err;
+ int retval;
+ struct wmi_device *wdev = drvdata.om_wmi->wdev;
+
+ err = gamezone_wmi_fan_profile_get(&drvdata.gz_wmi->pprof, &sel_prof);
+
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Error getting gamezone fan profile.\n");
+ return err;
+ }
+
+ // Construct the WMI attribute id from the given args.
+ struct om_attribute_id attribute_id = { sel_prof << 8, feature_id,
+ device_id };
+
+ mutex_lock(&om_wmi.mutex);
+ err = lenovo_legion_evaluate_method_1(wdev, 0x0,
+ WMI_METHOD_ID_VALUE_GET,
+ *(int *)&attribute_id, &retval);
+ mutex_unlock(&om_wmi.mutex);
+
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Error getting attribute");
+ return err;
+ }
+
+ return sysfs_emit(buf, "%u\n", retval);
+}
+
+/**
+ * attr_capdata_01_show() - Get the value of the specified attribute property
+ * from LENOVO_CAPABILITY_DATA_01.
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to write to.
+ * @retval: Pointer to returned data.
+ * @device_id: The WMI functions Device ID to use.
+ * @feature_id: The WMI functions Feature ID to use.
+ * @prop: The property of this attribute to be read.
+ *
+ * This function is intended to be generic so it can be called from any "_show"
+ * attribute which works only with integers.
+ *
+ * If the WMI is success, then the sysfs attribute is notified.
+ *
+ * Returns: Either count, or an error.
+ */
+ssize_t attr_capdata_01_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf, u8 device_id, u8 feature_id,
+ enum attribute_property prop)
+{
+ struct capability_data_01 cap_data;
+ int err;
+ int retval;
+ int sel_prof = SMARTFAN_MODE_CUSTOM; /* Only show CUSTOM mode values */
+
+ // Construct the WMI attribute id from the given args.
+ struct om_attribute_id attribute_id = { sel_prof << 8, feature_id,
+ device_id };
+
+ err = capdata_01_wmi_get(attribute_id, &cap_data);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Failed to get capability data.\n");
+ return -EIO;
+ }
+
+ switch (prop) {
+ case DEFAULT_VAL:
+ retval = cap_data.default_value;
+ break;
+ case MAX_VAL:
+ retval = cap_data.max_value;
+ break;
+ case MIN_VAL:
+ retval = cap_data.min_value;
+ break;
+ case STEP_VAL:
+ retval = cap_data.step;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return sysfs_emit(buf, "%u\n", retval);
+}
+
+ATTR_GROUP_LL_TUNABLE_CAP01(ppt_pl1_spl, "ppt_pl1_spl", WMI_DEVICE_ID_CPU,
+ WMI_FEATURE_ID_CPU_SPL,
+ "Set the CPU sustained power limit");
+ATTR_GROUP_LL_TUNABLE_CAP01(ppt_pl2_sppt, "ppt_pl2_sppt", WMI_DEVICE_ID_CPU,
+ WMI_FEATURE_ID_CPU_SPPT,
+ "Set the CPU slow package power tracking limit");
+ATTR_GROUP_LL_TUNABLE_CAP01(ppt_pl3_fppt, "ppt_pl3_fppt", WMI_DEVICE_ID_CPU,
+ WMI_FEATURE_ID_CPU_FPPT,
+ "Set the CPU fast package power tracking limit");
+
+static const struct capdata_01_attr_group capdata_01_attr_groups[] = {
+ { &ppt_pl1_spl_attr_group },
+ { &ppt_pl2_sppt_attr_group },
+ { &ppt_pl3_fppt_attr_group },
+ {},
+};
+
+static int other_method_fw_attr_add(void)
+{
+ int err, i;
+
+ err = fw_attributes_class_get(&fw_attr_class);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Failed to get firmware_attributes_class.\n");
+ return err;
+ }
+
+ om_wmi.fw_attr_dev = device_create(fw_attr_class, NULL, MKDEV(0, 0),
+ NULL, "%s", DRIVER_NAME);
+ if (IS_ERR(om_wmi.fw_attr_dev)) {
+ pr_err("lenovo_legion_wmi_other: Failed to create firmware_attributes_class device.\n");
+ err = PTR_ERR(om_wmi.fw_attr_dev);
+ goto fail_class_get;
+ }
+
+ om_wmi.fw_attr_kset = kset_create_and_add("attributes", NULL,
+ &om_wmi.fw_attr_dev->kobj);
+ if (!om_wmi.fw_attr_kset) {
+ pr_err("lenovo_legion_wmi_other: Failed to create firmware_attributes_class kset.\n");
+ err = -ENOMEM;
+ goto err_destroy_classdev;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(capdata_01_attr_groups) - 1; i++) {
+ err = sysfs_create_group(&om_wmi.fw_attr_kset->kobj,
+ capdata_01_attr_groups[i].attr_group);
+ if (err) {
+ pr_err("lenovo_legion_wmi_other: Failed to create sysfs-group for %s\n",
+ capdata_01_attr_groups[i].attr_group->name);
+ goto err_remove_groups;
+ }
+ }
+
+ return 0;
+
+err_remove_groups:
+ while (--i >= 0) {
+ sysfs_remove_group(&om_wmi.fw_attr_kset->kobj,
+ capdata_01_attr_groups[i].attr_group);
+ }
+err_destroy_classdev:
+ device_destroy(fw_attr_class, MKDEV(0, 0));
+fail_class_get:
+ fw_attributes_class_put();
+ return err;
+}
+
+/* Driver Setup */
+static int other_method_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+ int err;
+
+ om_wmi.wdev = wdev;
+ drvdata.om_wmi = &om_wmi;
+ om_wmi.ll_tunables = kzalloc(sizeof(*om_wmi.ll_tunables), GFP_KERNEL);
+ if (!om_wmi.ll_tunables)
+ return -ENOMEM;
+
+ err = other_method_fw_attr_add();
+ if (err)
+ return err;
+ pr_info("lenovo_legion_wmi_other: Firmware attributes added.\n");
+
+ return 0;
+}
+
+static void other_method_wmi_remove(struct wmi_device *wdev)
+{
+ mutex_lock(&om_wmi.mutex);
+
+ kset_unregister(om_wmi.fw_attr_kset);
+ device_destroy(fw_attr_class, MKDEV(0, 0));
+ fw_attributes_class_put();
+
+ mutex_unlock(&om_wmi.mutex);
+
+ pr_info("lenovo_legion_wmi_other: Firmware attributes removed.\n");
+}
+
+static struct wmi_driver other_method_wmi_driver = {
+ .driver = { .name = "other_method_wmi" },
+ .id_table = other_method_wmi_id_table,
+ .probe = other_method_wmi_probe,
+ .remove = other_method_wmi_remove,
+};
+
+module_wmi_driver(other_method_wmi_driver);
+
+MODULE_IMPORT_NS("GZ_WMI");
+MODULE_IMPORT_NS("CAPDATA_WMI");
+MODULE_DEVICE_TABLE(wmi, other_method_wmi_id_table);
+MODULE_AUTHOR("Derek J. Clark <derekjohn.clark@...il.com>");
+MODULE_DESCRIPTION("Lenovo Legion Other Method Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/lenovo-legion-wmi.h b/drivers/platform/x86/lenovo-legion-wmi.h
new file mode 100644
index 000000000000..65baa728f29e
--- /dev/null
+++ b/drivers/platform/x86/lenovo-legion-wmi.h
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Lenovo Legion WMI interface driver. The Lenovo Legion WMI interface is
+ * broken up into multiple GUID interfaces that require cross-references
+ * between GUID's for some functionality. The "Custom Mode" interface is a
+ * legacy interface for managing and displaying CPU & GPU power and hwmon
+ * settings and readings. The "Other Mode" interface is a modern interface
+ * that replaces or extends the "Custom Mode" interface methods. The "GameZone"
+ * interface adds advanced features such as fan profiles and overclocking.
+ * The "Lighting" interface adds control of various status lights related to
+ * different hardware components. "Custom Mode" uses LENOVO_CAPABILITY_DATA_00
+ * struct for capability information, "Other Mode" uses
+ * LENOVO_CAPABILITY_DATA_01 struct for capability information, and "Lighting"
+ * uses LENOVO_CAPABILITY_DATA_02 struct for capability information.
+ *
+ * Copyright(C) 2024 Derek J. Clark <derekjohn.clark@...il.com>
+ *
+ */
+
+#ifndef _LENOVO_LEGION_WMI_H_
+#define _LENOVO_LEGION_WMI_H_
+
+#include <linux/mutex.h>
+#include <linux/platform_profile.h>
+#include <linux/types.h>
+#include <linux/wmi.h>
+
+#define DRIVER_NAME "lenovo-legion-wmi"
+
+/* Platform Profile Modes */
+#define SMARTFAN_MODE_QUIET 0x01
+#define SMARTFAN_MODE_BALANCED 0x02
+#define SMARTFAN_MODE_PERFORMANCE 0x03
+#define SMARTFAN_MODE_CUSTOM 0xFF
+
+struct gamezone_wmi {
+ struct wmi_device *wdev;
+ enum platform_profile_option current_profile;
+ struct platform_profile_handler pprof;
+ bool platform_profile_support;
+ struct mutex mutex; /* Ensure single operation on WMI device */
+};
+
+struct other_method_wmi {
+ struct wmi_device *wdev;
+ struct device *fw_attr_dev;
+ struct kset *fw_attr_kset;
+ struct ll_tunables *ll_tunables;
+ struct mutex mutex; /* Ensure single operation on WMI device */
+};
+
+struct capdata_wmi {
+ struct wmi_device *wdev;
+ struct mutex mutex; /* Ensure single operation on WMI device */
+};
+
+struct ll_drvdata {
+ struct other_method_wmi *om_wmi; /* Other method GUID device */
+ struct gamezone_wmi *gz_wmi; /* Gamezone GUID device */
+ struct capdata_wmi *cd01_wmi; /* Capability Data 01 GUID device */
+} drvdata;
+
+struct wmi_method_args {
+ u32 arg0;
+ u32 arg1;
+};
+
+struct om_attribute_id {
+ u32 mode_id : 16; /* Fan profile */
+ u32 feature_id : 8; /* Attribute (SPL/SPPT/...) */
+ u32 device_id : 8; /* CPU/GPU */
+} __packed;
+
+enum attribute_property {
+ DEFAULT_VAL = 0,
+ MAX_VAL,
+ MIN_VAL,
+ STEP_VAL,
+ SUPPORTED,
+};
+
+struct capability_data_01 {
+ u32 id;
+ u32 capability;
+ u32 default_value;
+ u32 step;
+ u32 min_value;
+ u32 max_value;
+};
+
+static int lenovo_legion_evaluate_method(struct wmi_device *wdev, u8 instance,
+ u32 method_id, struct acpi_buffer *in,
+ struct acpi_buffer *out)
+{
+ acpi_status status;
+
+ status = wmidev_evaluate_method(wdev, instance, method_id, in, out);
+
+ if (ACPI_FAILURE(status)) {
+ pr_err("lenovo_legion_wmi: wmidev_evaluate_method failed for method_id %u instance %u.\n",
+ method_id, instance);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+int lenovo_legion_evaluate_method_2(struct wmi_device *wdev, u8 instance,
+ u32 method_id, u32 arg0, u32 arg1,
+ u32 *retval);
+
+int lenovo_legion_evaluate_method_2(struct wmi_device *wdev, u8 instance,
+ u32 method_id, u32 arg0, u32 arg1,
+ u32 *retval)
+{
+ int ret;
+ u32 temp_val;
+ struct wmi_method_args args = { arg0, arg1 };
+ struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *ret_obj = NULL;
+
+ ret = lenovo_legion_evaluate_method(wdev, instance, method_id, &input,
+ &output);
+
+ if (ret) {
+ pr_err("lenovo_legion_wmi: Attempt to get method_id %u value failed with error: %u\n",
+ method_id, ret);
+ return ret;
+ }
+
+ if (retval) {
+ ret_obj = (union acpi_object *)output.pointer;
+ if (ret_obj && ret_obj->type == ACPI_TYPE_INTEGER)
+ temp_val = (u32)ret_obj->integer.value;
+
+ *retval = temp_val;
+ }
+
+ kfree(ret_obj);
+
+ return 0;
+}
+
+int lenovo_legion_evaluate_method_1(struct wmi_device *wdev, u8 instance,
+ u32 method_id, u32 arg0, u32 *retval);
+
+int lenovo_legion_evaluate_method_1(struct wmi_device *wdev, u8 instance,
+ u32 method_id, u32 arg0, u32 *retval)
+{
+ return lenovo_legion_evaluate_method_2(wdev, instance, method_id, arg0,
+ 0, retval);
+}
+
+int capdata_01_wmi_get(struct om_attribute_id attr_id,
+ struct capability_data_01 *cap_data);
+
+int gamezone_wmi_platform_profile_set(struct platform_profile_handler *pprof,
+ enum platform_profile_option sel_prof);
+
+int gamezone_wmi_fan_profile_get(struct platform_profile_handler *pprof,
+ int *sel_prof);
+
+/* current_value */
+ssize_t attr_current_value_store(struct kobject *kobj,
+ struct kobj_attribute *attr, const char *buf,
+ size_t count, u32 *store_value, u8 device_id,
+ u8 feature_id);
+
+ssize_t attr_current_value_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf,
+ u8 device_id, u8 feature_id);
+
+/* LENOVO_CAPABILITY_DATA_01 */
+ssize_t attr_capdata_01_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf, u8 device_id, u8 feature_id,
+ enum attribute_property prop);
+
+ssize_t int_type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf);
+
+ssize_t int_type_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "integer\n");
+}
+
+#define __LL_ATTR_RO(_func, _name) \
+ { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _func##_##_name##_show, \
+ }
+
+#define __LL_ATTR_RO_AS(_name, _show) \
+ { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _show, \
+ }
+
+#define __LL_ATTR_RW(_func, _name) \
+ __ATTR(_name, 0644, _func##_##_name##_show, _func##_##_name##_store)
+
+/* Shows a formatted static variable */
+#define __ATTR_SHOW_FMT(_prop, _attrname, _fmt, _val) \
+ static ssize_t _attrname##_##_prop##_show( \
+ struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
+ { \
+ return sysfs_emit(buf, _fmt, _val); \
+ } \
+ static struct kobj_attribute attr_##_attrname##_##_prop = \
+ __LL_ATTR_RO(_attrname, _prop)
+
+/* Attribute current_value show/store */
+#define __LL_TUNABLE_RW_CAP01(_attrname, _dev_id, _feat_id) \
+ static ssize_t _attrname##_current_value_store( \
+ struct kobject *kobj, struct kobj_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ return attr_current_value_store( \
+ kobj, attr, buf, count, \
+ &om_wmi.ll_tunables->_attrname, _dev_id, _feat_id); \
+ } \
+ static ssize_t _attrname##_current_value_show( \
+ struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
+ { \
+ return attr_current_value_show(kobj, attr, buf, _dev_id, \
+ _feat_id); \
+ } \
+ static struct kobj_attribute attr_##_attrname##_current_value = \
+ __LL_ATTR_RW(_attrname, current_value)
+
+/* Attribute property show only */
+#define __LL_TUNABLE_RO_CAP01(_prop, _attrname, _dev_id, _feat_id, _prop_type) \
+ static ssize_t _attrname##_##_prop##_show( \
+ struct kobject *kobj, struct kobj_attribute *attr, char *buf) \
+ { \
+ return attr_capdata_01_show(kobj, attr, buf, _dev_id, \
+ _feat_id, _prop_type); \
+ } \
+ static struct kobj_attribute attr_##_attrname##_##_prop = \
+ __LL_ATTR_RO(_attrname, _prop)
+
+#define ATTR_GROUP_LL_TUNABLE_CAP01(_attrname, _fsname, _dev_id, _feat_id, \
+ _dispname) \
+ __LL_TUNABLE_RW_CAP01(_attrname, _dev_id, _feat_id); \
+ __LL_TUNABLE_RO_CAP01(default_value, _attrname, _dev_id, _feat_id, \
+ DEFAULT_VAL); \
+ __ATTR_SHOW_FMT(display_name, _attrname, "%s\n", _dispname); \
+ __LL_TUNABLE_RO_CAP01(max_value, _attrname, _dev_id, _feat_id, \
+ MAX_VAL); \
+ __LL_TUNABLE_RO_CAP01(min_value, _attrname, _dev_id, _feat_id, \
+ MIN_VAL); \
+ __LL_TUNABLE_RO_CAP01(scalar_increment, _attrname, _dev_id, _feat_id, \
+ STEP_VAL); \
+ static struct kobj_attribute attr_##_attrname##_type = \
+ __LL_ATTR_RO_AS(type, int_type_show); \
+ static struct attribute *_attrname##_attrs[] = { \
+ &attr_##_attrname##_current_value.attr, \
+ &attr_##_attrname##_default_value.attr, \
+ &attr_##_attrname##_display_name.attr, \
+ &attr_##_attrname##_max_value.attr, \
+ &attr_##_attrname##_min_value.attr, \
+ &attr_##_attrname##_scalar_increment.attr, \
+ &attr_##_attrname##_type.attr, \
+ NULL, \
+ }; \
+ static const struct attribute_group _attrname##_attr_group = { \
+ .name = _fsname, .attrs = _attrname##_attrs \
+ }
+
+#endif /* !_LENOVO_LEGION_WMI_H_ */
--
2.47.0
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