[PATCH v2 1/2] platform/x86: asus-wmi: Fix inconsistent use of thermal policies

[Armin Wolf <W_Armin@gmx.de>]

When changing the thermal policy using the platform profile API,
a Vivobook thermal policy is stored in throttle_thermal_policy_mode.

However everywhere else a normal thermal policy is stored inside this
variable, potentially confusing the platform profile.

Fix this by always storing normal thermal policy values inside
throttle_thermal_policy_mode and only do the conversion when writing
the thermal policy to hardware. This also fixes the order in which
throttle_thermal_policy_switch_next() steps through the thermal modes
on Vivobook machines.

Tested-by: Casey G Bowman <casey.g.bowman@intel.com>
Fixes: bcbfcebda2cb ("platform/x86: asus-wmi: add support for vivobook fan profiles")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
---
 drivers/platform/x86/asus-wmi.c | 64 +++++++++++----------------------
 1 file changed, 21 insertions(+), 43 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index ab9342a01a48..ce60835d0303 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -3696,10 +3696,28 @@ static int asus_wmi_custom_fan_curve_init(struct asus_wmi *asus)
 /* Throttle thermal policy ****************************************************/
 static int throttle_thermal_policy_write(struct asus_wmi *asus)
 {
-	u8 value = asus->throttle_thermal_policy_mode;
 	u32 retval;
+	u8 value;
 	int err;

+	if (asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO) {
+		switch (asus->throttle_thermal_policy_mode) {
+		case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
+			value = ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO;
+			break;
+		case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST:
+			value = ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO;
+			break;
+		case ASUS_THROTTLE_THERMAL_POLICY_SILENT:
+			value = ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO;
+			break;
+		default:
+			return -EINVAL;
+		}
+	} else {
+		value = asus->throttle_thermal_policy_mode;
+	}
+
 	err = asus_wmi_set_devstate(asus->throttle_thermal_policy_dev,
 				    value, &retval);

@@ -3804,46 +3822,6 @@ static ssize_t throttle_thermal_policy_store(struct device *dev,
 static DEVICE_ATTR_RW(throttle_thermal_policy);

 /* Platform profile ***********************************************************/
-static int asus_wmi_platform_profile_to_vivo(struct asus_wmi *asus, int mode)
-{
-	bool vivo;
-
-	vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
-
-	if (vivo) {
-		switch (mode) {
-		case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
-			return ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO;
-		case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST:
-			return ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO;
-		case ASUS_THROTTLE_THERMAL_POLICY_SILENT:
-			return ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO;
-		}
-	}
-
-	return mode;
-}
-
-static int asus_wmi_platform_profile_mode_from_vivo(struct asus_wmi *asus, int mode)
-{
-	bool vivo;
-
-	vivo = asus->throttle_thermal_policy_dev == ASUS_WMI_DEVID_THROTTLE_THERMAL_POLICY_VIVO;
-
-	if (vivo) {
-		switch (mode) {
-		case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT_VIVO:
-			return ASUS_THROTTLE_THERMAL_POLICY_DEFAULT;
-		case ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST_VIVO:
-			return ASUS_THROTTLE_THERMAL_POLICY_OVERBOOST;
-		case ASUS_THROTTLE_THERMAL_POLICY_SILENT_VIVO:
-			return ASUS_THROTTLE_THERMAL_POLICY_SILENT;
-		}
-	}
-
-	return mode;
-}
-
 static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof,
 					enum platform_profile_option *profile)
 {
@@ -3853,7 +3831,7 @@ static int asus_wmi_platform_profile_get(struct platform_profile_handler *pprof,
 	asus = container_of(pprof, struct asus_wmi, platform_profile_handler);
 	tp = asus->throttle_thermal_policy_mode;

-	switch (asus_wmi_platform_profile_mode_from_vivo(asus, tp)) {
+	switch (tp) {
 	case ASUS_THROTTLE_THERMAL_POLICY_DEFAULT:
 		*profile = PLATFORM_PROFILE_BALANCED;
 		break;
@@ -3892,7 +3870,7 @@ static int asus_wmi_platform_profile_set(struct platform_profile_handler *pprof,
 		return -EOPNOTSUPP;
 	}

-	asus->throttle_thermal_policy_mode = asus_wmi_platform_profile_to_vivo(asus, tp);
+	asus->throttle_thermal_policy_mode = tp;
 	return throttle_thermal_policy_write(asus);
 }

--
2.39.5