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ACPI: platform-profile: add platform_profile_cycle()

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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>
This commit is contained in:
Gergo Koteles 2024-04-08 19:35:10 +02:00 committed by Hans de Goede
parent c1ca23111a
commit ba95eb4467
2 changed files with 40 additions and 0 deletions
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39
drivers/acpi/platform_profile.c
View File

@ -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;

1
include/linux/platform_profile.h
View File

@ -36,6 +36,7 @@ struct platform_profile_handler {
int platform_profile_register(struct platform_profile_handler *pprof);
int platform_profile_remove(void);
int platform_profile_cycle(void);
void platform_profile_notify(void);
#endif /*_PLATFORM_PROFILE_H_*/