diff options
| -rw-r--r-- | drivers/leds/led-class-flash.c | 4 | ||||
| -rw-r--r-- | drivers/leds/led-class.c | 2 | ||||
| -rw-r--r-- | drivers/leds/led-core.c | 32 | ||||
| -rw-r--r-- | drivers/leds/leds.h | 13 | ||||
| -rw-r--r-- | include/linux/leds.h | 19 |
5 files changed, 35 insertions, 35 deletions
diff --git a/drivers/leds/led-class-flash.c b/drivers/leds/led-class-flash.c index 300a2c9007ca..f53783b8d5e8 100644 --- a/drivers/leds/led-class-flash.c +++ b/drivers/leds/led-class-flash.c @@ -316,10 +316,6 @@ int led_classdev_flash_register(struct device *parent, if (ret < 0) return ret; - /* Setting a torch brightness needs to have immediate effect */ - led_cdev->flags &= ~SET_BRIGHTNESS_ASYNC; - led_cdev->flags |= SET_BRIGHTNESS_SYNC; - return 0; } EXPORT_SYMBOL_GPL(led_classdev_flash_register); diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 83a1dc725864..d946991091fb 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -215,8 +215,6 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) if (!led_cdev->max_brightness) led_cdev->max_brightness = LED_FULL; - led_cdev->flags |= SET_BRIGHTNESS_ASYNC; - led_update_brightness(led_cdev); led_init_core(led_cdev); diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c index f57a96cb7b7d..19e1e60dfaa3 100644 --- a/drivers/leds/led-core.c +++ b/drivers/leds/led-core.c @@ -205,8 +205,6 @@ EXPORT_SYMBOL_GPL(led_stop_software_blink); void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness) { - int ret = 0; - /* * In case blinking is on delay brightness setting * until the next timer tick. @@ -227,17 +225,7 @@ void led_set_brightness(struct led_classdev *led_cdev, return; } - if (led_cdev->flags & SET_BRIGHTNESS_ASYNC) { - led_set_brightness_nosleep(led_cdev, brightness); - return; - } else if (led_cdev->flags & SET_BRIGHTNESS_SYNC) - ret = led_set_brightness_sync(led_cdev, brightness); - else - ret = -EINVAL; - - if (ret < 0) - dev_dbg(led_cdev->dev, "Setting LED brightness failed (%d)\n", - ret); + led_set_brightness_nosleep(led_cdev, brightness); } EXPORT_SYMBOL_GPL(led_set_brightness); @@ -268,6 +256,24 @@ void led_set_brightness_nosleep(struct led_classdev *led_cdev, } EXPORT_SYMBOL_GPL(led_set_brightness_nosleep); +int led_set_brightness_sync(struct led_classdev *led_cdev, + enum led_brightness value) +{ + if (led_cdev->blink_delay_on || led_cdev->blink_delay_off) + return -EBUSY; + + led_cdev->brightness = min(value, led_cdev->max_brightness); + + if (led_cdev->flags & LED_SUSPENDED) + return 0; + + if (led_cdev->brightness_set_blocking) + return led_cdev->brightness_set_blocking(led_cdev, + led_cdev->brightness); + return -ENOTSUPP; +} +EXPORT_SYMBOL_GPL(led_set_brightness_sync); + int led_update_brightness(struct led_classdev *led_cdev) { int ret = 0; diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h index 683a605fd33c..db3f20da7221 100644 --- a/drivers/leds/leds.h +++ b/drivers/leds/leds.h @@ -16,19 +16,6 @@ #include <linux/rwsem.h> #include <linux/leds.h> -static inline int led_set_brightness_sync(struct led_classdev *led_cdev, - enum led_brightness value) -{ - int ret = 0; - - led_cdev->brightness = min(value, led_cdev->max_brightness); - - if (!(led_cdev->flags & LED_SUSPENDED)) - ret = led_cdev->brightness_set_blocking(led_cdev, - led_cdev->brightness); - return ret; -} - static inline int led_get_brightness(struct led_classdev *led_cdev) { return led_cdev->brightness; diff --git a/include/linux/leds.h b/include/linux/leds.h index b35e0f5b8d6c..088f1da02bed 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -47,9 +47,7 @@ struct led_classdev { #define LED_BLINK_BRIGHTNESS_CHANGE (1 << 20) #define LED_BLINK_DISABLE (1 << 21) #define LED_SYSFS_DISABLE (1 << 22) -#define SET_BRIGHTNESS_ASYNC (1 << 23) -#define SET_BRIGHTNESS_SYNC (1 << 24) -#define LED_DEV_CAP_FLASH (1 << 25) +#define LED_DEV_CAP_FLASH (1 << 23) /* Set LED brightness level */ /* Must not sleep, use a workqueue if needed */ @@ -162,6 +160,21 @@ extern void led_blink_set_oneshot(struct led_classdev *led_cdev, */ extern void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness); + +/** + * led_set_brightness_sync - set LED brightness synchronously + * @led_cdev: the LED to set + * @brightness: the brightness to set it to + * + * Set an LED's brightness immediately. This function will block + * the caller for the time required for accessing device registers, + * and it can sleep. + * + * Returns: 0 on success or negative error value on failure + */ +extern int led_set_brightness_sync(struct led_classdev *led_cdev, + enum led_brightness value); + /** * led_update_brightness - update LED brightness * @led_cdev: the LED to query |