From c72a1d608dd0eb3d553a08bfdf1c0041bebaa8a0 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Fri, 31 Mar 2006 02:31:04 -0800 Subject: [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 Cc: Russell King Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/leds/leds.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 drivers/leds/leds.h (limited to 'drivers/leds/leds.h') diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h new file mode 100644 index 000000000000..d26ca2f7e722 --- /dev/null +++ b/drivers/leds/leds.h @@ -0,0 +1,31 @@ +/* + * LED Core + * + * Copyright 2005 Openedhand Ltd. + * + * Author: Richard Purdie + * + * 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 + +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 */ -- cgit v1.2.1