diff options
author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2015-10-07 09:10:41 (GMT) |
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committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-01-04 08:57:30 (GMT) |
commit | 81fe8e5b73e3f4de578ac7f53c1d956d4f58b8d4 (patch) | |
tree | ff084840f52a554f7a902c7e1ffe54416e4c452f /drivers/leds/trigger | |
parent | 437a4240f26461610cc0d90950b1c88348d9babe (diff) | |
download | linux-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/trigger')
-rw-r--r-- | drivers/leds/trigger/ledtrig-backlight.c | 8 | ||||
-rw-r--r-- | drivers/leds/trigger/ledtrig-default-on.c | 2 | ||||
-rw-r--r-- | drivers/leds/trigger/ledtrig-gpio.c | 6 | ||||
-rw-r--r-- | drivers/leds/trigger/ledtrig-heartbeat.c | 4 | ||||
-rw-r--r-- | drivers/leds/trigger/ledtrig-oneshot.c | 4 | ||||
-rw-r--r-- | drivers/leds/trigger/ledtrig-transient.c | 8 |
6 files changed, 16 insertions, 16 deletions
diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigger/ledtrig-backlight.c index 59eca17..1ca1f16 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_async(led, LED_OFF); + led_set_brightness_nosleep(led, LED_OFF); } else { - led_set_brightness_async(led, n->brightness); + led_set_brightness_nosleep(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_async(led, LED_OFF); + led_set_brightness_nosleep(led, LED_OFF); else - led_set_brightness_async(led, n->brightness); + led_set_brightness_nosleep(led, n->brightness); return num; } diff --git a/drivers/leds/trigger/ledtrig-default-on.c b/drivers/leds/trigger/ledtrig-default-on.c index 6f38f88..ff455cb 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_async(led_cdev, led_cdev->max_brightness); + led_set_brightness_nosleep(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 4cc7040..51288a4 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_async(gpio_data->led, + led_set_brightness_nosleep(gpio_data->led, gpio_data->desired_brightness); else - led_set_brightness_async(gpio_data->led, LED_FULL); + led_set_brightness_nosleep(gpio_data->led, LED_FULL); } else { - led_set_brightness_async(gpio_data->led, LED_OFF); + led_set_brightness_nosleep(gpio_data->led, LED_OFF); } } diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c index 8622ce6..410c39c 100644 --- a/drivers/leds/trigger/ledtrig-heartbeat.c +++ b/drivers/leds/trigger/ledtrig-heartbeat.c @@ -38,7 +38,7 @@ static void led_heartbeat_function(unsigned long data) unsigned long delay = 0; if (unlikely(panic_heartbeats)) { - led_set_brightness(led_cdev, LED_OFF); + led_set_brightness_nosleep(led_cdev, LED_OFF); return; } @@ -81,7 +81,7 @@ static void led_heartbeat_function(unsigned long data) break; } - led_set_brightness_async(led_cdev, brightness); + led_set_brightness_nosleep(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 fbd02cd..6729317 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_async(led_cdev, LED_FULL); + led_set_brightness_nosleep(led_cdev, LED_FULL); else - led_set_brightness_async(led_cdev, LED_OFF); + led_set_brightness_nosleep(led_cdev, LED_OFF); return size; } diff --git a/drivers/leds/trigger/ledtrig-transient.c b/drivers/leds/trigger/ledtrig-transient.c index 3c34de4..1dddd8f 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_async(led_cdev, transient_data->restore_state); + led_set_brightness_nosleep(led_cdev, transient_data->restore_state); } static ssize_t transient_activate_show(struct device *dev, @@ -72,7 +72,7 @@ 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_async(led_cdev, + led_set_brightness_nosleep(led_cdev, transient_data->restore_state); return size; } @@ -81,7 +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_async(led_cdev, transient_data->state); + led_set_brightness_nosleep(led_cdev, transient_data->state); transient_data->restore_state = (transient_data->state == LED_FULL) ? LED_OFF : LED_FULL; mod_timer(&transient_data->timer, @@ -204,7 +204,7 @@ static void transient_trig_deactivate(struct led_classdev *led_cdev) if (led_cdev->activated) { del_timer_sync(&transient_data->timer); - led_set_brightness_async(led_cdev, + led_set_brightness_nosleep(led_cdev, transient_data->restore_state); device_remove_file(led_cdev->dev, &dev_attr_activate); device_remove_file(led_cdev->dev, &dev_attr_duration); |