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authorJacek Anaszewski <j.anaszewski@samsung.com>2015-10-07 12:10:41 +0300
committerJacek Anaszewski <j.anaszewski@samsung.com>2016-01-04 11:57:30 +0300
commit81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4 (patch)
treeff084840f52a554f7a902c7e1ffe54416e4c452f /drivers/leds/leds.h
parent437a4240f26461610cc0d90950b1c88348d9babe (diff)
downloadlinux-81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4.tar.xz
leds: core: Add led_set_brightness_nosleep{nopm} functions
This patch adds led_set_brightness_nosleep() and led_set_brightness_nopm() functions, that guarantee setting LED brightness in a non-blocking way. The latter is used from pm_ops context and doesn't modify the brightness cached in the struct led_classdev. Its execution always ends up with a call to brightness setting op - either directly or through a set_brightness_work, regardless of LED_SUSPENDED flag state. The patch also replaces led_set_brightness_async() with led_set_brightness_nosleep() in all places where the most vital was setting brightness in a non sleeping way but not necessarily asynchronously, which is not needed for non-blocking drivers. Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Diffstat (limited to 'drivers/leds/leds.h')
-rw-r--r--drivers/leds/leds.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index cf6d44886bcb..8e252a2f8662 100644
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -46,6 +46,10 @@ static inline int led_get_brightness(struct led_classdev *led_cdev)
void led_init_core(struct led_classdev *led_cdev);
void led_stop_software_blink(struct led_classdev *led_cdev);
+void led_set_brightness_nopm(struct led_classdev *led_cdev,
+ enum led_brightness value);
+void led_set_brightness_nosleep(struct led_classdev *led_cdev,
+ enum led_brightness value);
extern struct rw_semaphore leds_list_lock;
extern struct list_head leds_list;