[PATCH v4 2/3] platform/x86: lenovo-wmi-gamezone Use max-power rather than balanced-performance

["Derek J. Clark" <derekjohn.clark@gmail.com>]

When developing the gamezone WMI drivers, "extreme mode" was matched to
the performance platform profile and "performance" was matched to the
balanced-performance platform profile, but only if extreme mode was
fully supported; otherwise performance was matched to the "performance"
platform profile. This has led to quite a bit of confusion with users
not understanding why the LED color indicating the platform profile
doesn't match their expectations.

To solve this, replace the confusing convention by using the new
max-power profile to represent "extreme mode". While add it, update the
documentation to reflect the expected LED colors in each operating mode.

Signed-off-by: Derek J. Clark <derekjohn.clark@gmail.com>

driver
---
 .../wmi/devices/lenovo-wmi-gamezone.rst       | 31 +++++++++----------
 drivers/platform/x86/lenovo/wmi-gamezone.c    | 18 +++--------
 2 files changed, 20 insertions(+), 29 deletions(-)

diff --git a/Documentation/wmi/devices/lenovo-wmi-gamezone.rst b/Documentation/wmi/devices/lenovo-wmi-gamezone.rst
index 997263e51a7d..1769ad3d57b9 100644
--- a/Documentation/wmi/devices/lenovo-wmi-gamezone.rst
+++ b/Documentation/wmi/devices/lenovo-wmi-gamezone.rst
@@ -19,27 +19,26 @@ WMI GUID ``887B54E3-DDDC-4B2C-8B88-68A26A8835D0``
 The Gamezone Data WMI interface provides platform-profile and fan curve
 settings for devices that fall under the "Gaming Series" of Lenovo devices.
 It uses a notifier chain to inform other Lenovo WMI interface drivers of the
-current platform profile when it changes.
+current platform profile when it changes. The currently set profile can be
+determined by the user on the hardware by looking at the color of the power
+or profile LED, depending on the model.
 
 The following platform profiles are supported:
- - low-power
- - balanced
- - balanced-performance
- - performance
- - custom
+ - low-power, blue LED
+ - balanced, white LED
+ - performance, red LED
+ - max-power, purple LED
+ - custom, purple LED
 
-Balanced-Performance
+Extreme Mode
 ~~~~~~~~~~~~~~~~~~~~
 Some newer Lenovo "Gaming Series" laptops have an "Extreme Mode" profile
-enabled in their BIOS. For these devices, the performance platform profile
-corresponds to the BIOS Extreme Mode, while the balanced-performance
-platform profile corresponds to the BIOS Performance mode. For legacy
-devices, the performance platform profile will correspond with the BIOS
-Performance mode.
-
-For some newer devices the "Extreme Mode" profile is incomplete in the BIOS
-and setting it will cause undefined behavior. A BIOS bug quirk table is
-provided to ensure these devices cannot set "Extreme Mode" from the driver.
+enabled in their BIOS. When available, this mode will be represented by the
+max-power platform profile.
+
+For a subset of these devices the "Extreme Mode" profile is incomplete in
+the BIOS and setting it will cause undefined behavior. A BIOS bug quirk table
+is provided to ensure these devices cannot set "Extreme Mode" from the driver.
 
 Custom Profile
 ~~~~~~~~~~~~~~
diff --git a/drivers/platform/x86/lenovo/wmi-gamezone.c b/drivers/platform/x86/lenovo/wmi-gamezone.c
index 0eb7fe8222f4..df475e52f79d 100644
--- a/drivers/platform/x86/lenovo/wmi-gamezone.c
+++ b/drivers/platform/x86/lenovo/wmi-gamezone.c
@@ -171,14 +171,10 @@ static int lwmi_gz_profile_get(struct device *dev,
 		*profile = PLATFORM_PROFILE_BALANCED;
 		break;
 	case LWMI_GZ_THERMAL_MODE_PERFORMANCE:
-		if (priv->extreme_supported) {
-			*profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE;
-			break;
-		}
 		*profile = PLATFORM_PROFILE_PERFORMANCE;
 		break;
 	case LWMI_GZ_THERMAL_MODE_EXTREME:
-		*profile = PLATFORM_PROFILE_PERFORMANCE;
+		*profile = PLATFORM_PROFILE_MAX_POWER;
 		break;
 	case LWMI_GZ_THERMAL_MODE_CUSTOM:
 		*profile = PLATFORM_PROFILE_CUSTOM;
@@ -218,16 +214,12 @@ static int lwmi_gz_profile_set(struct device *dev,
 	case PLATFORM_PROFILE_BALANCED:
 		mode = LWMI_GZ_THERMAL_MODE_BALANCED;
 		break;
-	case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
-		mode = LWMI_GZ_THERMAL_MODE_PERFORMANCE;
-		break;
 	case PLATFORM_PROFILE_PERFORMANCE:
-		if (priv->extreme_supported) {
-			mode = LWMI_GZ_THERMAL_MODE_EXTREME;
-			break;
-		}
 		mode = LWMI_GZ_THERMAL_MODE_PERFORMANCE;
 		break;
+	case PLATFORM_PROFILE_MAX_POWER:
+		mode = LWMI_GZ_THERMAL_MODE_EXTREME;
+		break;
 	case PLATFORM_PROFILE_CUSTOM:
 		mode = LWMI_GZ_THERMAL_MODE_CUSTOM;
 		break;
@@ -338,7 +330,7 @@ static int lwmi_gz_platform_profile_probe(void *drvdata, unsigned long *choices)
 
 	priv->extreme_supported = lwmi_gz_extreme_supported(profile_support_ver);
 	if (priv->extreme_supported)
-		set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices);
+		set_bit(PLATFORM_PROFILE_MAX_POWER, choices);
 
 	return 0;
 }
-- 
2.51.2