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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-21 08:18:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-21 08:18:38 -0700 |
| commit | 045aaedab67bc3f2f01fe46917e0e17a6b5a7d5d (patch) | |
| tree | 48c18f788c81d84c895318c82cb35e8d19d23efa /include | |
| parent | 5b9c8972527fdb52d5cd7dadc9853c57430e0ff5 (diff) | |
| parent | a4c84e6aafda0ddd8cb004c464cd11e47e211049 (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED update from Bryan Wu:
"Basically we have some bug fixing and clean up and one big thing is we
start to merge patch to add support LED Flash class"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
leds: gpio: cleanup the leds-gpio driver
led: gpio: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
led: gpio: Sort include headers alphabetically
leds: Improve and export led_update_brightness
leds: trigger: gpio: fix warning in gpio trigger for gpios whose accessor function may sleep
leds: lp3944: fix sparse warning
leds: avoid using DEVICE_ATTR macro for max_brightness attribute
leds: make brightness type consistent across whole subsystem
leds: Reorder include directives
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/leds.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/leds.h b/include/linux/leds.h index e4368647219..a57611d0c94 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -13,8 +13,8 @@ #define __LINUX_LEDS_H_INCLUDED #include <linux/list.h> -#include <linux/spinlock.h> #include <linux/rwsem.h> +#include <linux/spinlock.h> #include <linux/timer.h> #include <linux/workqueue.h> @@ -31,8 +31,8 @@ enum led_brightness { struct led_classdev { const char *name; - int brightness; - int max_brightness; + enum led_brightness brightness; + enum led_brightness max_brightness; int flags; /* Lower 16 bits reflect status */ @@ -140,6 +140,16 @@ 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_update_brightness - update LED brightness + * @led_cdev: the LED to query + * + * Get an LED's current brightness and update led_cdev->brightness + * member with the obtained value. + * + * Returns: 0 on success or negative error value on failure + */ +extern int led_update_brightness(struct led_classdev *led_cdev); /* * LED Triggers |