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| author |  Gergo Koteles <soyer@irl.hu>
| 2024-04-08 19:35:10 +0200 |
|---|---|---|
| committer |  Hans de Goede <hdegoede@redhat.com>
| 2024-04-15 15:46:56 +0200 |
| commit | ba95eb44676d68049490af617049a7bf68946527 (patch) | |
| tree | dd58759c924dcf97d27da11f7a69a496256d1697 /drivers/acpi | |
| parent | platform/x86: android-tablets: Use GPIO_LOOKUP() macro (diff) | |
| download | linux-ba95eb44676d68049490af617049a7bf68946527.tar.gz linux-ba95eb44676d68049490af617049a7bf68946527.tar.bz2 linux-ba95eb44676d68049490af617049a7bf68946527.zip | |
ACPI: platform-profile: add platform_profile_cycle()
Some laptops have a key to switch platform profiles.
Add a platform_profile_cycle() function to cycle between the enabled
profiles.
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/5a97deddf72aa5e764d881eb39a7ba35c01a903e.1712597199.git.soyer@irl.hu
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/platform_profile.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c index d418462ab791..4a9704730224 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -136,6 +136,45 @@ void platform_profile_notify(void) } EXPORT_SYMBOL_GPL(platform_profile_notify); +int platform_profile_cycle(void) +{ + enum platform_profile_option profile; + enum platform_profile_option next; + int err; + + err = mutex_lock_interruptible(&profile_lock); + if (err) + return err; + + if (!cur_profile) { + mutex_unlock(&profile_lock); + return -ENODEV; + } + + err = cur_profile->profile_get(cur_profile, &profile); + if (err) { + mutex_unlock(&profile_lock); + return err; + } + + next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST, + profile + 1); + + if (WARN_ON(next == PLATFORM_PROFILE_LAST)) { + mutex_unlock(&profile_lock); + return -EINVAL; + } + + err = cur_profile->profile_set(cur_profile, next); + mutex_unlock(&profile_lock); + + if (!err) + sysfs_notify(acpi_kobj, NULL, "platform_profile"); + + return err; +} +EXPORT_SYMBOL_GPL(platform_profile_cycle); + int platform_profile_register(struct platform_profile_handler *pprof) { int err; |