[PATCH v4 06/12] platform/x86: alienware-wmi-wmax: Add support for the "custom" thermal profile

Kurt Borja
2025-03-08T20:23:58Z

All models with the "AWCC" WMAX device support a "custom" thermal
profile. In some models this profile signals user-space that the user
wants to manually control the fans, which are always unlocked. In other
models it actually unlocks manual fan control.

Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
---
drivers/platform/x86/dell/alienware-wmi-wmax.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/dell/alienware-wmi-wmax.c b/drivers/platform/x86/dell/alienware-wmi-wmax.c
index 0530f25b956f73f47c0354f40dac2910448c894e..3b37e4456482bc284b8e867c1c5b6255fc6c8ef2 100644
--- a/drivers/platform/x86/dell/alienware-wmi-wmax.c
+++ b/drivers/platform/x86/dell/alienware-wmi-wmax.c
@@ -29,8 +29,6 @@
#define AWCC_METHOD_THERMAL_CONTROL 0x15
#define AWCC_METHOD_GAME_SHIFT_STATUS 0x25

-#define AWCC_THERMAL_MODE_GMODE 0xAB
-
#define AWCC_FAILURE_CODE 0xFFFFFFFF
#define AWCC_FAILURE_CODE_2 0xFFFFFFFE
#define AWCC_THERMAL_TABLE_MASK GENMASK(7, 4)
@@ -177,6 +175,11 @@ enum AWCC_THERMAL_TABLES {
AWCC_THERMAL_TABLE_USTT = 0xA,
};

+enum AWCC_SPECIAL_THERMAL_CODES {
+ AWCC_SPECIAL_PROFILE_CUSTOM = 0x00,
+ AWCC_SPECIAL_PROFILE_GMODE = 0xAB,
+};
+
enum awcc_thermal_profile {
AWCC_PROFILE_USTT_BALANCED,
AWCC_PROFILE_USTT_BALANCED_PERFORMANCE,
@@ -589,9 +592,15 @@ static int awcc_platform_profile_get(struct device *dev,
if (ret)
return ret;

- if (out_data == AWCC_THERMAL_MODE_GMODE) {
+ switch (out_data) {
+ case AWCC_SPECIAL_PROFILE_CUSTOM:
+ *profile = PLATFORM_PROFILE_CUSTOM;
+ return 0;
+ case AWCC_SPECIAL_PROFILE_GMODE:
*profile = PLATFORM_PROFILE_PERFORMANCE;
return 0;
+ default:
+ break;
}

if (!is_awcc_thermal_profile_id(out_data))
@@ -679,11 +688,17 @@ static int awcc_platform_profile_probe(void *drvdata, unsigned long *choices)

if (awcc->gmode) {
priv->supported_profiles[PLATFORM_PROFILE_PERFORMANCE] =
- AWCC_THERMAL_MODE_GMODE;
+ AWCC_SPECIAL_PROFILE_GMODE;

__set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
}

+ /* Every model supports the "custom" profile */
+ priv->supported_profiles[PLATFORM_PROFILE_CUSTOM] =
+ AWCC_SPECIAL_PROFILE_CUSTOM;
+
+ __set_bit(PLATFORM_PROFILE_CUSTOM, choices);
+
return 0;
}

--
2.48.1