From c05f67e6c2e508f5462f30a5394a1607ef683ff9 Mon Sep 17 00:00:00 2001 From: Rong Zhang Date: Wed, 21 Jan 2026 02:20:05 +0800 Subject: [PATCH] platform/x86: lenovo-wmi-capdata: Add support for Capability Data 00 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add support for LENOVO_CAPABILITY_DATA_00 WMI data block that comes on "Other Mode" enabled hardware. Provides an interface for querying if a given attribute is supported by the hardware, as well as its default value. capdata00 always presents on devices with capdata01. lenovo-wmi-other now binds to both (no functional change intended). Signed-off-by: Rong Zhang Reviewed-by: Derek J. Clark Tested-by: Derek J. Clark Link: https://patch.msgid.link/20260120182104.163424-5-i@rong.moe Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- .../wmi/devices/lenovo-wmi-other.rst | 15 ++++++++--- drivers/platform/x86/lenovo/wmi-capdata.c | 25 +++++++++++++++++++ drivers/platform/x86/lenovo/wmi-capdata.h | 8 ++++++ 3 files changed, 45 insertions(+), 3 deletions(-) diff --git a/Documentation/wmi/devices/lenovo-wmi-other.rst b/Documentation/wmi/devices/lenovo-wmi-other.rst index d7928b8dfb4b5..fcad595d49af2 100644 --- a/Documentation/wmi/devices/lenovo-wmi-other.rst +++ b/Documentation/wmi/devices/lenovo-wmi-other.rst @@ -31,13 +31,22 @@ under the following path: /sys/class/firmware-attributes/lenovo-wmi-other/attributes// +LENOVO_CAPABILITY_DATA_00 +------------------------- + +WMI GUID ``362A3AFE-3D96-4665-8530-96DAD5BB300E`` + +The LENOVO_CAPABILITY_DATA_00 interface provides various information that +does not rely on the gamezone thermal mode. + LENOVO_CAPABILITY_DATA_01 ------------------------- WMI GUID ``7A8F5407-CB67-4D6E-B547-39B3BE018154`` -The LENOVO_CAPABILITY_DATA_01 interface provides information on various -power limits of integrated CPU and GPU components. +The LENOVO_CAPABILITY_DATA_01 interface provides various information that +relies on the gamezone thermal mode, including power limits of integrated +CPU and GPU components. Each attribute has the following properties: - current_value @@ -48,7 +57,7 @@ Each attribute has the following properties: - scalar_increment - type -The following attributes are implemented: +The following firmware-attributes are implemented: - 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 diff --git a/drivers/platform/x86/lenovo/wmi-capdata.c b/drivers/platform/x86/lenovo/wmi-capdata.c index 93ecb49c4c73a..4ed5b73d430dc 100644 --- a/drivers/platform/x86/lenovo/wmi-capdata.c +++ b/drivers/platform/x86/lenovo/wmi-capdata.c @@ -5,6 +5,9 @@ * Lenovo Capability Data provides information on tunable attributes used by * the "Other Mode" WMI interface. * + * Capability Data 00 includes if the attribute is supported by the hardware, + * and the default_value. All attributes are independent of thermal modes. + * * Capability Data 01 includes if the attribute is supported by the hardware, * and the default_value, max_value, min_value, and step increment. Each * attribute has multiple pages, one for each of the thermal modes managed by @@ -40,12 +43,14 @@ #include "wmi-capdata.h" +#define LENOVO_CAPABILITY_DATA_00_GUID "362A3AFE-3D96-4665-8530-96DAD5BB300E" #define LENOVO_CAPABILITY_DATA_01_GUID "7A8F5407-CB67-4D6E-B547-39B3BE018154" #define ACPI_AC_CLASS "ac_adapter" #define ACPI_AC_NOTIFY_STATUS 0x80 enum lwmi_cd_type { + LENOVO_CAPABILITY_DATA_00, LENOVO_CAPABILITY_DATA_01, }; @@ -59,6 +64,7 @@ static const struct lwmi_cd_info { const char *name; enum lwmi_cd_type type; } lwmi_cd_table[] = { + LWMI_CD_TABLE_ITEM(LENOVO_CAPABILITY_DATA_00), LWMI_CD_TABLE_ITEM(LENOVO_CAPABILITY_DATA_01), }; @@ -74,6 +80,7 @@ struct cd_list { u8 count; union { + DECLARE_FLEX_ARRAY(struct capdata00, cd00); DECLARE_FLEX_ARRAY(struct capdata01, cd01); }; }; @@ -141,6 +148,9 @@ static int lwmi_cd_component_bind(struct device *cd_dev, struct lwmi_cd_binder *binder = data; switch (priv->list->type) { + case LENOVO_CAPABILITY_DATA_00: + binder->cd00_list = priv->list; + break; case LENOVO_CAPABILITY_DATA_01: binder->cd01_list = priv->list; break; @@ -184,6 +194,9 @@ static const struct component_ops lwmi_cd_component_ops = { return -EINVAL; \ } +DEF_LWMI_CDXX_GET_DATA(cd00, LENOVO_CAPABILITY_DATA_00, struct capdata00); +EXPORT_SYMBOL_NS_GPL(lwmi_cd00_get_data, "LENOVO_WMI_CAPDATA"); + DEF_LWMI_CDXX_GET_DATA(cd01, LENOVO_CAPABILITY_DATA_01, struct capdata01); EXPORT_SYMBOL_NS_GPL(lwmi_cd01_get_data, "LENOVO_WMI_CAPDATA"); @@ -202,6 +215,10 @@ static int lwmi_cd_cache(struct lwmi_cd_priv *priv) void *p; switch (priv->list->type) { + case LENOVO_CAPABILITY_DATA_00: + p = &priv->list->cd00[0]; + size = sizeof(priv->list->cd00[0]); + break; case LENOVO_CAPABILITY_DATA_01: p = &priv->list->cd01[0]; size = sizeof(priv->list->cd01[0]); @@ -247,6 +264,9 @@ static int lwmi_cd_alloc(struct lwmi_cd_priv *priv, enum lwmi_cd_type type) count = wmidev_instance_count(priv->wdev); switch (type) { + case LENOVO_CAPABILITY_DATA_00: + list_size = struct_size(list, cd00, count); + break; case LENOVO_CAPABILITY_DATA_01: list_size = struct_size(list, cd01, count); break; @@ -359,6 +379,9 @@ static int lwmi_cd_probe(struct wmi_device *wdev, const void *context) goto out; switch (info->type) { + case LENOVO_CAPABILITY_DATA_00: + ret = component_add(&wdev->dev, &lwmi_cd_component_ops); + goto out; case LENOVO_CAPABILITY_DATA_01: priv->acpi_nb.notifier_call = lwmi_cd01_notifier_call; @@ -392,6 +415,7 @@ static void lwmi_cd_remove(struct wmi_device *wdev) struct lwmi_cd_priv *priv = dev_get_drvdata(&wdev->dev); switch (priv->list->type) { + case LENOVO_CAPABILITY_DATA_00: case LENOVO_CAPABILITY_DATA_01: component_del(&wdev->dev, &lwmi_cd_component_ops); break; @@ -405,6 +429,7 @@ static void lwmi_cd_remove(struct wmi_device *wdev) .context = &lwmi_cd_table[_type], static const struct wmi_device_id lwmi_cd_id_table[] = { + { LWMI_CD_WDEV_ID(LENOVO_CAPABILITY_DATA_00) }, { LWMI_CD_WDEV_ID(LENOVO_CAPABILITY_DATA_01) }, {} }; diff --git a/drivers/platform/x86/lenovo/wmi-capdata.h b/drivers/platform/x86/lenovo/wmi-capdata.h index d326f9d2d1659..a6d006ef458f6 100644 --- a/drivers/platform/x86/lenovo/wmi-capdata.h +++ b/drivers/platform/x86/lenovo/wmi-capdata.h @@ -11,6 +11,12 @@ struct component_match; struct device; struct cd_list; +struct capdata00 { + u32 id; + u32 supported; + u32 default_value; +}; + struct capdata01 { u32 id; u32 supported; @@ -21,10 +27,12 @@ struct capdata01 { }; struct lwmi_cd_binder { + struct cd_list *cd00_list; struct cd_list *cd01_list; }; void lwmi_cd_match_add_all(struct device *master, struct component_match **matchptr); +int lwmi_cd00_get_data(struct cd_list *list, u32 attribute_id, struct capdata00 *output); int lwmi_cd01_get_data(struct cd_list *list, u32 attribute_id, struct capdata01 *output); #endif /* !_LENOVO_WMI_CAPDATA_H_ */ -- 2.47.3