diff options
| author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2014-11-14 02:50:18 -0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2014-11-14 14:29:35 -0800 |
| commit | 4d71a4a12b130ad033219e6f58c74a64059415eb (patch) | |
| tree | 5b9560719835c5a204b92f4bb7e44aae6793281c /drivers/leds/trigger/ledtrig-backlight.c | |
| parent | acd899e4f3066b6662f6047da5b795cc762093cb (diff) | |
| download | op-kernel-dev-4d71a4a12b130ad033219e6f58c74a64059415eb.zip op-kernel-dev-4d71a4a12b130ad033219e6f58c74a64059415eb.tar.gz | |
leds: Add support for setting brightness in a synchronous way
There are use cases when setting a LED brightness has to
have immediate effect (e.g. setting a torch LED brightness).
This patch extends LED subsystem to support such operations.
The LED subsystem internal API __led_set_brightness is changed
to led_set_brightness_async and new led_set_brightness_sync API
is added.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds/trigger/ledtrig-backlight.c')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-backlight.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigger/ledtrig-backlight.c index 47e55aa..59eca17 100644 --- a/drivers/leds/trigger/ledtrig-backlight.c +++ b/drivers/leds/trigger/ledtrig-backlight.c @@ -51,9 +51,9 @@ static int fb_notifier_callback(struct notifier_block *p, if ((n->old_status == UNBLANK) ^ n->invert) { n->brightness = led->brightness; - __led_set_brightness(led, LED_OFF); + led_set_brightness_async(led, LED_OFF); } else { - __led_set_brightness(led, n->brightness); + led_set_brightness_async(led, n->brightness); } n->old_status = new_status; @@ -89,9 +89,9 @@ static ssize_t bl_trig_invert_store(struct device *dev, /* After inverting, we need to update the LED. */ if ((n->old_status == BLANK) ^ n->invert) - __led_set_brightness(led, LED_OFF); + led_set_brightness_async(led, LED_OFF); else - __led_set_brightness(led, n->brightness); + led_set_brightness_async(led, n->brightness); return num; } |
