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ACPI: platform_profile: Add concept of a "custom" profile

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When two profile handlers don't agree on the current profile it's ambiguous
what to show to the legacy sysfs interface.

Add a "custom" profile string that userspace will be able to use the legacy
sysfs interface to distinguish this situation..

Additionally drivers can choose to use this to indicate that a user has
modified driver settings in a way that the platform profile advertised by
a driver is not accurate.

Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20241206031918.1537-17-mario.limonciello@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Mario Limonciello 2024-12-05 21:19:12 -06:00 committed by Ilpo Järvinen
parent 06ec24388f
commit 494637cf5b
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2 changed files with 2 additions and 0 deletions
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1
drivers/acpi/platform_profile.c
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@ -20,6 +20,7 @@ static const char * const profile_names[] = {
[PLATFORM_PROFILE_BALANCED] = "balanced",
[PLATFORM_PROFILE_BALANCED_PERFORMANCE] = "balanced-performance",
[PLATFORM_PROFILE_PERFORMANCE] = "performance",
[PLATFORM_PROFILE_CUSTOM] = "custom",
};
static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST);

1
include/linux/platform_profile.h
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@ -23,6 +23,7 @@ enum platform_profile_option {
PLATFORM_PROFILE_BALANCED,
PLATFORM_PROFILE_BALANCED_PERFORMANCE,
PLATFORM_PROFILE_PERFORMANCE,
PLATFORM_PROFILE_CUSTOM,
PLATFORM_PROFILE_LAST, /*must always be last */
};