Unverified Commit c05f67e6 authored by Rong Zhang's avatar Rong Zhang Committed by Ilpo Järvinen
Browse files

platform/x86: lenovo-wmi-capdata: Add support for Capability Data 00 



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: default avatarRong Zhang <i@rong.moe>
Reviewed-by: default avatarDerek J. Clark <derekjohn.clark@gmail.com>
Tested-by: default avatarDerek J. Clark <derekjohn.clark@gmail.com>
Link: https://patch.msgid.link/20260120182104.163424-5-i@rong.moe


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 4ff1a029

Documentation/wmi/devices/lenovo-wmi-other.rst

+12 −3
Original line number Diff line number Diff line
@@ -31,13 +31,22 @@ under the following path: 


  /sys/class/firmware-attributes/lenovo-wmi-other/attributes/<attribute>/



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

drivers/platform/x86/lenovo/wmi-capdata.c

+25 −0
Original line number Diff line number Diff line
@@ -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) },

	{}

};

drivers/platform/x86/lenovo/wmi-capdata.h

+8 −0
Original line number Diff line number Diff line
@@ -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_ */