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hwmon: (asus-ec-sensors) add CPU core voltage

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A user discovered [1] the CPU Core voltage sensor, which spans 2
registers and provides output in mV. Althroug the discovery was made
with a X470 chipset, the sensor is present in X570 (tested with C8H).
For now simply add it to each board with the CPU current sensor present.

[1] https://github.com/zeule/asus-ec-sensors/issues/12

Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Denis Pauk <pauk.denis@gmail.com>
Link: https://lore.kernel.org/r/20220208094244.1106312-1-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Eugene Shalygin 2022-02-08 10:42:43 +01:00 committed by Guenter Roeck
parent a7a5731a09
commit f545a2fd47
2 changed files with 20 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/hwmon/asus_ec_sensors.rst
View File

@ -39,6 +39,7 @@ The driver is aware of and reads the following sensors:
9. Readings from the "Water flow meter" header (RPM)
10. Readings from the "Water In" and "Water Out" temperature headers
11. CPU current
12. CPU core voltage
Sensor values are read from EC registers, and to avoid race with the board
firmware the driver acquires ACPI mutex, the one used by the WMI when its

29
drivers/hwmon/asus-ec-sensors.c
View File

@ -18,6 +18,7 @@
* - VRM Heat Sink fan RPM
* - Water Flow fan RPM
* - CPU current
* - CPU core voltage
*/
#include <linux/acpi.h>
@ -100,6 +101,8 @@ enum ec_sensors {
ec_sensor_temp_t_sensor,
/* VRM temperature [℃] */
ec_sensor_temp_vrm,
/* CPU Core voltage [mV] */
ec_sensor_in_cpu_core,
/* CPU_Opt fan [RPM] */
ec_sensor_fan_cpu_opt,
/* VRM heat sink fan [RPM] */
@ -121,6 +124,7 @@ enum ec_sensors {
#define SENSOR_TEMP_MB BIT(ec_sensor_temp_mb)
#define SENSOR_TEMP_T_SENSOR BIT(ec_sensor_temp_t_sensor)
#define SENSOR_TEMP_VRM BIT(ec_sensor_temp_vrm)
#define SENSOR_IN_CPU_CORE BIT(ec_sensor_in_cpu_core)
#define SENSOR_FAN_CPU_OPT BIT(ec_sensor_fan_cpu_opt)
#define SENSOR_FAN_VRM_HS BIT(ec_sensor_fan_vrm_hs)
#define SENSOR_FAN_CHIPSET BIT(ec_sensor_fan_chipset)
@ -139,6 +143,8 @@ static const struct ec_sensor_info known_ec_sensors[] = {
[ec_sensor_temp_t_sensor] =
EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
[ec_sensor_in_cpu_core] =
EC_SENSOR("CPU Core", hwmon_in, 2, 0x00, 0xa2),
[ec_sensor_fan_cpu_opt] =
EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xb0),
[ec_sensor_fan_vrm_hs] = EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
@ -172,32 +178,34 @@ static const struct dmi_system_id asus_ec_dmi_table[] __initconst = {
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "Pro WS X570-ACE",
SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU),
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE,
"ROG CROSSHAIR VIII DARK HERO",
SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU),
SENSOR_FAN_CPU_OPT | SENSOR_FAN_WATER_FLOW |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE,
"ROG CROSSHAIR VIII FORMULA",
SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET |
SENSOR_CURR_CPU),
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "ROG CROSSHAIR VIII HERO",
SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET |
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU),
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE,
"ROG CROSSHAIR VIII HERO (WI-FI)",
SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET |
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU),
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE,
"ROG CROSSHAIR VIII IMPACT",
SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU),
SENSOR_TEMP_VRM | SENSOR_FAN_CHIPSET |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "ROG STRIX B550-E GAMING",
SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
@ -205,17 +213,19 @@ static const struct dmi_system_id asus_ec_dmi_table[] __initconst = {
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "ROG STRIX B550-I GAMING",
SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_FAN_VRM_HS | SENSOR_CURR_CPU),
SENSOR_TEMP_VRM | SENSOR_FAN_VRM_HS |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "ROG STRIX X570-E GAMING",
SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR |
SENSOR_TEMP_VRM | SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU),
SENSOR_TEMP_VRM | SENSOR_FAN_CHIPSET |
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "ROG STRIX X570-F GAMING",
SENSOR_SET_TEMP_CHIPSET_CPU_MB |
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET),
DMI_EXACT_MATCH_BOARD(VENDOR_ASUS_UPPER_CASE, "ROG STRIX X570-I GAMING",
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_VRM_HS |
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU),
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE),
{}
};
@ -467,7 +477,6 @@ static long scale_sensor_value(s32 value, int data_type)
switch (data_type) {
case hwmon_curr:
case hwmon_temp:
case hwmon_in:
return value * MILLI;
default:
return value;