acpi: platform_profile - Add max-power profile option

Some devices, namely Lenovo Legion devices, have an "extreme" mode where
power draw is at the maximum limit of the cooling hardware. Add a new
"max-power" platform profile to properly reflect this operating mode.

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Derek J. Clark <derekjohn.clark@gmail.com>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Link: https://patch.msgid.link/20251127151605.1018026-2-derekjohn.clark@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: pastaq

Documentation/ABI/testing/sysfs-class-platform-profile

@@ -23,6 +23,8 @@ Description:	This file contains a space-separated list of profiles supported
 					power consumption with a slight bias
 					towards performance
 		performance		High performance operation
+		max-power		Higher performance operation that may exceed
+					internal battery draw limits when on AC power
 		custom			Driver defined custom profile
 		====================	========================================
 

drivers/acpi/platform_profile.c

@@ -37,6 +37,7 @@ static const char * const profile_names[] = {
 	[PLATFORM_PROFILE_BALANCED] = "balanced",
 	[PLATFORM_PROFILE_BALANCED_PERFORMANCE] = "balanced-performance",
 	[PLATFORM_PROFILE_PERFORMANCE] = "performance",
+	[PLATFORM_PROFILE_MAX_POWER] = "max-power",
 	[PLATFORM_PROFILE_CUSTOM] = "custom",
 };
 static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);
@@ -506,7 +507,8 @@ int platform_profile_cycle(void)
 		if (err)
 			return err;
 
-		if (profile == PLATFORM_PROFILE_CUSTOM ||
+		if (profile == PLATFORM_PROFILE_MAX_POWER ||
+		    profile == PLATFORM_PROFILE_CUSTOM ||
 		    profile == PLATFORM_PROFILE_LAST)
 			return -EINVAL;
 
@@ -515,7 +517,8 @@ int platform_profile_cycle(void)
 		if (err)
 			return err;
 
-		/* never iterate into a custom if all drivers supported it */
+		/* never iterate into a custom or max power if all drivers supported it */
+		clear_bit(PLATFORM_PROFILE_MAX_POWER, data.aggregate);
 		clear_bit(PLATFORM_PROFILE_CUSTOM, data.aggregate);
 
 		next = find_next_bit_wrap(data.aggregate,

include/linux/platform_profile.h

@@ -24,6 +24,7 @@ enum platform_profile_option {
 	PLATFORM_PROFILE_BALANCED,
 	PLATFORM_PROFILE_BALANCED_PERFORMANCE,
 	PLATFORM_PROFILE_PERFORMANCE,
+	PLATFORM_PROFILE_MAX_POWER,
 	PLATFORM_PROFILE_CUSTOM,
 	PLATFORM_PROFILE_LAST, /*must always be last */
 };