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| author | Richard Purdie <rpurdie@rpsys.net> | 2006-03-31 02:31:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:18:56 -0800 |
| commit | c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0 (patch) | |
| tree | 56715f0e0af8a9c33725f3db2f14cf7f870ad46d /drivers/leds/leds.h | |
| parent | 75c1d31d9ea71025b73430c696b727e8aa15872d (diff) | |
| download | kernel_samsung_smdk4412-c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0.tar.gz kernel_samsung_smdk4412-c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0.tar.bz2 kernel_samsung_smdk4412-c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0.zip | |
[PATCH] LED: add LED class
Add the foundations of a new LEDs subsystem. This patch adds a class which
presents LED devices within sysfs and allows their brightness to be
controlled.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/leds/leds.h')
| -rw-r--r-- | drivers/leds/leds.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h new file mode 100644 index 00000000000..d26ca2f7e72 --- /dev/null +++ b/drivers/leds/leds.h @@ -0,0 +1,31 @@ +/* + * LED Core + * + * Copyright 2005 Openedhand Ltd. + * + * Author: Richard Purdie <rpurdie@openedhand.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ +#ifndef __LEDS_H_INCLUDED +#define __LEDS_H_INCLUDED + +#include <linux/leds.h> + +static inline void led_set_brightness(struct led_classdev *led_cdev, + enum led_brightness value) +{ + if (value > LED_FULL) + value = LED_FULL; + led_cdev->brightness = value; + if (!(led_cdev->flags & LED_SUSPENDED)) + led_cdev->brightness_set(led_cdev, value); +} + +extern rwlock_t leds_list_lock; +extern struct list_head leds_list; + +#endif /* __LEDS_H_INCLUDED */ |