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authorJacek Anaszewski <j.anaszewski@samsung.com>2014-11-14 13:50:18 +0300
committerBryan Wu <cooloney@gmail.com>2014-11-15 01:29:35 +0300
commit4d71a4a12b130ad033219e6f58c74a64059415eb (patch)
tree5b9560719835c5a204b92f4bb7e44aae6793281c /drivers/leds/trigger
parentacd899e4f3066b6662f6047da5b795cc762093cb (diff)
downloadlinux-4d71a4a12b130ad033219e6f58c74a64059415eb.tar.xz
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')
-rw-r--r--drivers/leds/trigger/ledtrig-backlight.c8
-rw-r--r--drivers/leds/trigger/ledtrig-default-on.c2
-rw-r--r--drivers/leds/trigger/ledtrig-gpio.c6
-rw-r--r--drivers/leds/trigger/ledtrig-heartbeat.c2
-rw-r--r--drivers/leds/trigger/ledtrig-oneshot.c4
-rw-r--r--drivers/leds/trigger/ledtrig-transient.c10
6 files changed, 17 insertions, 15 deletions
diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigger/ledtrig-backlight.c
index 47e55aa9eefa..59eca17d9661 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;
}
diff --git a/drivers/leds/trigger/ledtrig-default-on.c b/drivers/leds/trigger/ledtrig-default-on.c
index 81a91be8e18d..6f38f883aaf1 100644
--- a/drivers/leds/trigger/ledtrig-default-on.c
+++ b/drivers/leds/trigger/ledtrig-default-on.c
@@ -19,7 +19,7 @@
static void defon_trig_activate(struct led_classdev *led_cdev)
{
- __led_set_brightness(led_cdev, led_cdev->max_brightness);
+ led_set_brightness_async(led_cdev, led_cdev->max_brightness);
}
static struct led_trigger defon_led_trigger = {
diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c
index c86c41826476..4cc7040746c6 100644
--- a/drivers/leds/trigger/ledtrig-gpio.c
+++ b/drivers/leds/trigger/ledtrig-gpio.c
@@ -54,12 +54,12 @@ static void gpio_trig_work(struct work_struct *work)
if (tmp) {
if (gpio_data->desired_brightness)
- __led_set_brightness(gpio_data->led,
+ led_set_brightness_async(gpio_data->led,
gpio_data->desired_brightness);
else
- __led_set_brightness(gpio_data->led, LED_FULL);
+ led_set_brightness_async(gpio_data->led, LED_FULL);
} else {
- __led_set_brightness(gpio_data->led, LED_OFF);
+ led_set_brightness_async(gpio_data->led, LED_OFF);
}
}
diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c
index 5c8464a33172..fea6871d2609 100644
--- a/drivers/leds/trigger/ledtrig-heartbeat.c
+++ b/drivers/leds/trigger/ledtrig-heartbeat.c
@@ -74,7 +74,7 @@ static void led_heartbeat_function(unsigned long data)
break;
}
- __led_set_brightness(led_cdev, brightness);
+ led_set_brightness_async(led_cdev, brightness);
mod_timer(&heartbeat_data->timer, jiffies + delay);
}
diff --git a/drivers/leds/trigger/ledtrig-oneshot.c b/drivers/leds/trigger/ledtrig-oneshot.c
index cb4c7466692a..fbd02cdc3ad7 100644
--- a/drivers/leds/trigger/ledtrig-oneshot.c
+++ b/drivers/leds/trigger/ledtrig-oneshot.c
@@ -63,9 +63,9 @@ static ssize_t led_invert_store(struct device *dev,
oneshot_data->invert = !!state;
if (oneshot_data->invert)
- __led_set_brightness(led_cdev, LED_FULL);
+ led_set_brightness_async(led_cdev, LED_FULL);
else
- __led_set_brightness(led_cdev, LED_OFF);
+ led_set_brightness_async(led_cdev, LED_OFF);
return size;
}
diff --git a/drivers/leds/trigger/ledtrig-transient.c b/drivers/leds/trigger/ledtrig-transient.c
index e5abc00bb00c..3c34de404d18 100644
--- a/drivers/leds/trigger/ledtrig-transient.c
+++ b/drivers/leds/trigger/ledtrig-transient.c
@@ -41,7 +41,7 @@ static void transient_timer_function(unsigned long data)
struct transient_trig_data *transient_data = led_cdev->trigger_data;
transient_data->activate = 0;
- __led_set_brightness(led_cdev, transient_data->restore_state);
+ led_set_brightness_async(led_cdev, transient_data->restore_state);
}
static ssize_t transient_activate_show(struct device *dev,
@@ -72,7 +72,8 @@ static ssize_t transient_activate_store(struct device *dev,
if (state == 0 && transient_data->activate == 1) {
del_timer(&transient_data->timer);
transient_data->activate = state;
- __led_set_brightness(led_cdev, transient_data->restore_state);
+ led_set_brightness_async(led_cdev,
+ transient_data->restore_state);
return size;
}
@@ -80,7 +81,7 @@ static ssize_t transient_activate_store(struct device *dev,
if (state == 1 && transient_data->activate == 0 &&
transient_data->duration != 0) {
transient_data->activate = state;
- __led_set_brightness(led_cdev, transient_data->state);
+ led_set_brightness_async(led_cdev, transient_data->state);
transient_data->restore_state =
(transient_data->state == LED_FULL) ? LED_OFF : LED_FULL;
mod_timer(&transient_data->timer,
@@ -203,7 +204,8 @@ static void transient_trig_deactivate(struct led_classdev *led_cdev)
if (led_cdev->activated) {
del_timer_sync(&transient_data->timer);
- __led_set_brightness(led_cdev, transient_data->restore_state);
+ led_set_brightness_async(led_cdev,
+ transient_data->restore_state);
device_remove_file(led_cdev->dev, &dev_attr_activate);
device_remove_file(led_cdev->dev, &dev_attr_duration);
device_remove_file(led_cdev->dev, &dev_attr_state);