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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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platform/x86: alienware-wmi-wmax: Add HWMON support
All models with the "AWCC" WMAX device support monitoring fan speed and temperature sensors. Expose this feature through the HWMON interface. Cc: Guenter Roeck <linux@roeck-us.net> Cc: Jean Delvare <jdelvare@suse.com> Cc: linux-hwmon@vger.kernel.org Reviewed-by: Armin Wolf <W_Armin@gmx.de> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Link: https://lore.kernel.org/r/20250329-hwm-v7-7-a14ea39d8a94@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Kurt Borja
Ilpo Järvinen
parent
3dde0ae1eb
commit
d699907834
@ -22,6 +22,7 @@ config ALIENWARE_WMI
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depends on DMI
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depends on LEDS_CLASS
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depends on NEW_LEDS
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depends on HWMON
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help
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This is a driver for controlling Alienware WMI driven features.
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@ -10,10 +10,13 @@
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#include <linux/array_size.h>
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#include <linux/bitfield.h>
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#include <linux/bitmap.h>
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#include <linux/bits.h>
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#include <linux/dmi.h>
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#include <linux/hwmon.h>
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#include <linux/moduleparam.h>
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#include <linux/platform_profile.h>
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#include <linux/units.h>
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#include <linux/wmi.h>
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#include "alienware-wmi.h"
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@ -26,6 +29,7 @@
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#define WMAX_METHOD_BRIGHTNESS 0x3
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#define WMAX_METHOD_ZONE_CONTROL 0x4
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#define AWCC_METHOD_GET_FAN_SENSORS 0x13
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#define AWCC_METHOD_THERMAL_INFORMATION 0x14
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#define AWCC_METHOD_THERMAL_CONTROL 0x15
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#define AWCC_METHOD_GAME_SHIFT_STATUS 0x25
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@ -40,6 +44,12 @@
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/* Arbitrary limit based on supported models */
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#define AWCC_MAX_RES_COUNT 16
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#define AWCC_ID_BITMAP_SIZE (U8_MAX + 1)
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#define AWCC_ID_BITMAP_LONGS BITS_TO_LONGS(AWCC_ID_BITMAP_SIZE)
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static bool force_hwmon;
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module_param_unsafe(force_hwmon, bool, 0);
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MODULE_PARM_DESC(force_hwmon, "Force probing for HWMON support without checking if the WMI backend is available");
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static bool force_platform_profile;
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module_param_unsafe(force_platform_profile, bool, 0);
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@ -50,16 +60,19 @@ module_param_unsafe(force_gmode, bool, 0);
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MODULE_PARM_DESC(force_gmode, "Forces G-Mode when performance profile is selected");
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struct awcc_quirks {
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bool hwmon;
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bool pprof;
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bool gmode;
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};
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static struct awcc_quirks g_series_quirks = {
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.hwmon = true,
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.pprof = true,
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.gmode = true,
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};
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static struct awcc_quirks generic_quirks = {
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.hwmon = true,
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.pprof = true,
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.gmode = false,
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};
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@ -157,9 +170,18 @@ static const struct dmi_system_id awcc_dmi_table[] __initconst = {
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},
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};
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enum AWCC_GET_FAN_SENSORS_OPERATIONS {
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AWCC_OP_GET_TOTAL_FAN_TEMPS = 0x01,
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AWCC_OP_GET_FAN_TEMP_ID = 0x02,
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};
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enum AWCC_THERMAL_INFORMATION_OPERATIONS {
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AWCC_OP_GET_SYSTEM_DESCRIPTION = 0x02,
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AWCC_OP_GET_RESOURCE_ID = 0x03,
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AWCC_OP_GET_TEMPERATURE = 0x04,
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AWCC_OP_GET_FAN_RPM = 0x05,
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AWCC_OP_GET_FAN_MIN_RPM = 0x08,
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AWCC_OP_GET_FAN_MAX_RPM = 0x09,
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AWCC_OP_GET_CURRENT_PROFILE = 0x0B,
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};
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@ -182,6 +204,11 @@ enum AWCC_SPECIAL_THERMAL_CODES {
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AWCC_SPECIAL_PROFILE_GMODE = 0xAB,
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};
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enum AWCC_TEMP_SENSOR_TYPES {
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AWCC_TEMP_SENSOR_CPU = 0x01,
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AWCC_TEMP_SENSOR_GPU = 0x06,
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};
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enum awcc_thermal_profile {
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AWCC_PROFILE_USTT_BALANCED,
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AWCC_PROFILE_USTT_BALANCED_PERFORMANCE,
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@ -218,6 +245,14 @@ struct wmax_u32_args {
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u8 arg3;
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};
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struct awcc_fan_data {
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unsigned long auto_channels_temp;
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const char *label;
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u32 min_rpm;
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u32 max_rpm;
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u8 id;
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};
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struct awcc_priv {
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struct wmi_device *wdev;
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union {
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@ -233,6 +268,10 @@ struct awcc_priv {
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struct device *ppdev;
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u8 supported_profiles[PLATFORM_PROFILE_LAST];
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struct device *hwdev;
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struct awcc_fan_data **fan_data;
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unsigned long temp_sensors[AWCC_ID_BITMAP_LONGS];
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};
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static const enum platform_profile_option awcc_mode_to_platform_profile[AWCC_PROFILE_LAST] = {
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@ -497,6 +536,19 @@ static int awcc_wmi_command(struct wmi_device *wdev, u32 method_id,
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return 0;
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}
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static int awcc_get_fan_sensors(struct wmi_device *wdev, u8 operation,
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u8 fan_id, u8 index, u32 *out)
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{
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struct wmax_u32_args args = {
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.operation = operation,
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.arg1 = fan_id,
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.arg2 = index,
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.arg3 = 0,
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};
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return awcc_wmi_command(wdev, AWCC_METHOD_GET_FAN_SENSORS, &args, out);
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}
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static int awcc_thermal_information(struct wmi_device *wdev, u8 operation, u8 arg,
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u32 *out)
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{
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@ -562,6 +614,30 @@ static int awcc_op_get_resource_id(struct wmi_device *wdev, u8 index, u8 *out)
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return 0;
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}
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static int awcc_op_get_fan_rpm(struct wmi_device *wdev, u8 fan_id, u32 *out)
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{
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struct wmax_u32_args args = {
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.operation = AWCC_OP_GET_FAN_RPM,
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.arg1 = fan_id,
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.arg2 = 0,
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.arg3 = 0,
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};
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return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out);
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}
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static int awcc_op_get_temperature(struct wmi_device *wdev, u8 temp_id, u32 *out)
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{
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struct wmax_u32_args args = {
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.operation = AWCC_OP_GET_TEMPERATURE,
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.arg1 = temp_id,
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.arg2 = 0,
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.arg3 = 0,
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};
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return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_INFORMATION, &args, out);
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}
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static int awcc_op_get_current_profile(struct wmi_device *wdev, u32 *out)
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{
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struct wmax_u32_args args = {
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@ -587,6 +663,313 @@ static int awcc_op_activate_profile(struct wmi_device *wdev, u8 profile)
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return awcc_wmi_command(wdev, AWCC_METHOD_THERMAL_CONTROL, &args, &out);
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}
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/*
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* HWMON
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* - Provides temperature and fan speed monitoring as well as manual fan
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* control
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*/
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static umode_t awcc_hwmon_is_visible(const void *drvdata, enum hwmon_sensor_types type,
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u32 attr, int channel)
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{
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const struct awcc_priv *priv = drvdata;
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unsigned int temp_count;
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switch (type) {
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case hwmon_temp:
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temp_count = bitmap_weight(priv->temp_sensors, AWCC_ID_BITMAP_SIZE);
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return channel < temp_count ? 0444 : 0;
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case hwmon_fan:
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return channel < priv->fan_count ? 0444 : 0;
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case hwmon_pwm:
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return channel < priv->fan_count ? 0444 : 0;
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default:
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return 0;
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}
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}
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static int awcc_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long *val)
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{
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struct awcc_priv *priv = dev_get_drvdata(dev);
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const struct awcc_fan_data *fan;
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u32 state;
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int ret;
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u8 temp;
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switch (type) {
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case hwmon_temp:
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temp = find_nth_bit(priv->temp_sensors, AWCC_ID_BITMAP_SIZE, channel);
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switch (attr) {
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case hwmon_temp_input:
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ret = awcc_op_get_temperature(priv->wdev, temp, &state);
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if (ret)
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return ret;
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*val = state * MILLIDEGREE_PER_DEGREE;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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case hwmon_fan:
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fan = priv->fan_data[channel];
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switch (attr) {
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case hwmon_fan_input:
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ret = awcc_op_get_fan_rpm(priv->wdev, fan->id, &state);
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if (ret)
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return ret;
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*val = state;
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break;
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case hwmon_fan_min:
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*val = fan->min_rpm;
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break;
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case hwmon_fan_max:
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*val = fan->max_rpm;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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case hwmon_pwm:
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fan = priv->fan_data[channel];
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switch (attr) {
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case hwmon_pwm_auto_channels_temp:
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*val = fan->auto_channels_temp;
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break;
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default:
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return -EOPNOTSUPP;
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}
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static int awcc_hwmon_read_string(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, const char **str)
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{
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struct awcc_priv *priv = dev_get_drvdata(dev);
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u8 temp;
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switch (type) {
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case hwmon_temp:
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temp = find_nth_bit(priv->temp_sensors, AWCC_ID_BITMAP_SIZE, channel);
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switch (temp) {
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case AWCC_TEMP_SENSOR_CPU:
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*str = "CPU";
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break;
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case AWCC_TEMP_SENSOR_GPU:
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*str = "GPU";
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break;
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default:
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*str = "Unknown";
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break;
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}
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break;
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case hwmon_fan:
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*str = priv->fan_data[channel]->label;
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static const struct hwmon_ops awcc_hwmon_ops = {
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.is_visible = awcc_hwmon_is_visible,
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.read = awcc_hwmon_read,
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.read_string = awcc_hwmon_read_string,
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};
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static const struct hwmon_channel_info * const awcc_hwmon_info[] = {
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HWMON_CHANNEL_INFO(temp,
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HWMON_T_LABEL | HWMON_T_INPUT,
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HWMON_T_LABEL | HWMON_T_INPUT,
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HWMON_T_LABEL | HWMON_T_INPUT,
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HWMON_T_LABEL | HWMON_T_INPUT,
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HWMON_T_LABEL | HWMON_T_INPUT,
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HWMON_T_LABEL | HWMON_T_INPUT
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),
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HWMON_CHANNEL_INFO(fan,
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HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX,
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HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX,
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HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX,
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HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX,
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HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX,
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HWMON_F_LABEL | HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX
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),
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HWMON_CHANNEL_INFO(pwm,
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HWMON_PWM_AUTO_CHANNELS_TEMP,
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HWMON_PWM_AUTO_CHANNELS_TEMP,
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HWMON_PWM_AUTO_CHANNELS_TEMP,
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HWMON_PWM_AUTO_CHANNELS_TEMP,
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HWMON_PWM_AUTO_CHANNELS_TEMP,
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HWMON_PWM_AUTO_CHANNELS_TEMP
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),
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NULL
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};
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static const struct hwmon_chip_info awcc_hwmon_chip_info = {
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.ops = &awcc_hwmon_ops,
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.info = awcc_hwmon_info,
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};
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static int awcc_hwmon_temps_init(struct wmi_device *wdev)
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{
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struct awcc_priv *priv = dev_get_drvdata(&wdev->dev);
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unsigned int i;
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int ret;
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u8 id;
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for (i = 0; i < priv->temp_count; i++) {
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/*
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* Temperature sensors IDs are listed after the fan IDs at
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* offset `fan_count`
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*/
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ret = awcc_op_get_resource_id(wdev, i + priv->fan_count, &id);
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if (ret)
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return ret;
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__set_bit(id, priv->temp_sensors);
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}
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return 0;
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}
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static char *awcc_get_fan_label(struct device *dev, u32 temp_count, u8 temp_id)
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{
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char *label;
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switch (temp_count) {
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case 0:
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label = "Independent Fan";
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break;
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case 1:
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switch (temp_id) {
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case AWCC_TEMP_SENSOR_CPU:
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label = "Processor Fan";
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break;
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case AWCC_TEMP_SENSOR_GPU:
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label = "Video Fan";
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break;
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default:
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label = "Unknown Fan";
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break;
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}
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break;
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default:
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label = "Shared Fan";
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break;
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}
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return label;
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}
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static int awcc_hwmon_fans_init(struct wmi_device *wdev)
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{
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struct awcc_priv *priv = dev_get_drvdata(&wdev->dev);
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unsigned long fan_temps[AWCC_ID_BITMAP_LONGS];
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unsigned long gather[AWCC_ID_BITMAP_LONGS];
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u32 min_rpm, max_rpm, temp_count, temp_id;
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struct awcc_fan_data *fan_data;
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unsigned int i, j;
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char *label;
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int ret;
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u8 id;
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for (i = 0; i < priv->fan_count; i++) {
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fan_data = devm_kzalloc(&wdev->dev, sizeof(*fan_data), GFP_KERNEL);
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if (!fan_data)
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return -ENOMEM;
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/*
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* Fan IDs are listed first at offset 0
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*/
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ret = awcc_op_get_resource_id(wdev, i, &id);
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if (ret)
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return ret;
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ret = awcc_thermal_information(wdev, AWCC_OP_GET_FAN_MIN_RPM, id,
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&min_rpm);
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if (ret)
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return ret;
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ret = awcc_thermal_information(wdev, AWCC_OP_GET_FAN_MAX_RPM, id,
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&max_rpm);
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if (ret)
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return ret;
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ret = awcc_get_fan_sensors(wdev, AWCC_OP_GET_TOTAL_FAN_TEMPS, id,
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0, &temp_count);
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if (ret)
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return ret;
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for (j = 0; j < temp_count; j++) {
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ret = awcc_get_fan_sensors(wdev, AWCC_OP_GET_FAN_TEMP_ID,
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id, j, &temp_id);
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if (ret)
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break;
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temp_id = FIELD_GET(AWCC_RESOURCE_ID_MASK, temp_id);
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__set_bit(temp_id, fan_temps);
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}
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label = awcc_get_fan_label(&wdev->dev, temp_count, temp_id);
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if (!label)
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return -ENOMEM;
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fan_data->id = id;
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fan_data->min_rpm = min_rpm;
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fan_data->max_rpm = max_rpm;
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fan_data->label = label;
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bitmap_gather(gather, fan_temps, priv->temp_sensors, AWCC_ID_BITMAP_SIZE);
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bitmap_copy(&fan_data->auto_channels_temp, gather, BITS_PER_LONG);
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priv->fan_data[i] = fan_data;
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bitmap_zero(fan_temps, AWCC_ID_BITMAP_SIZE);
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}
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return 0;
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}
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static int awcc_hwmon_init(struct wmi_device *wdev)
|
||||
{
|
||||
struct awcc_priv *priv = dev_get_drvdata(&wdev->dev);
|
||||
int ret;
|
||||
|
||||
priv->fan_data = devm_kcalloc(&wdev->dev, priv->fan_count,
|
||||
sizeof(*priv->fan_data), GFP_KERNEL);
|
||||
if (!priv->fan_data)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = awcc_hwmon_temps_init(wdev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = awcc_hwmon_fans_init(wdev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
priv->hwdev = devm_hwmon_device_register_with_info(&wdev->dev, "alienware_wmi", priv,
|
||||
&awcc_hwmon_chip_info, NULL);
|
||||
|
||||
return PTR_ERR_OR_ZERO(priv->hwdev);
|
||||
}
|
||||
|
||||
/*
|
||||
* Thermal Profile control
|
||||
* - Provides thermal profile control through the Platform Profile API
|
||||
@ -751,6 +1134,12 @@ static int alienware_awcc_setup(struct wmi_device *wdev)
|
||||
priv->wdev = wdev;
|
||||
dev_set_drvdata(&wdev->dev, priv);
|
||||
|
||||
if (awcc->hwmon) {
|
||||
ret = awcc_hwmon_init(wdev);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (awcc->pprof) {
|
||||
ret = awcc_platform_profile_init(wdev);
|
||||
if (ret)
|
||||
@ -831,6 +1220,13 @@ int __init alienware_wmax_wmi_init(void)
|
||||
if (id)
|
||||
awcc = id->driver_data;
|
||||
|
||||
if (force_hwmon) {
|
||||
if (!awcc)
|
||||
awcc = &empty_quirks;
|
||||
|
||||
awcc->hwmon = true;
|
||||
}
|
||||
|
||||
if (force_platform_profile) {
|
||||
if (!awcc)
|
||||
awcc = &empty_quirks;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user