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/*
* 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/rwsem.h>
#include <linux/leds.h>
static inline void led_set_brightness_async(struct led_classdev *led_cdev,
enum led_brightness value)
{
value = min(value, led_cdev->max_brightness);
led_cdev->brightness = value;
if (!(led_cdev->flags & LED_SUSPENDED))
led_cdev->brightness_set(led_cdev, value);
}
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_sync(led_cdev,
led_cdev->brightness);
return ret;
}
static inline int led_get_brightness(struct led_classdev *led_cdev)
{
return led_cdev->brightness;
}
static inline struct led_classdev *trigger_to_lcdev(struct led_trigger *trig)
{
struct led_classdev *led_cdev;
read_lock(&trig->leddev_list_lock);
list_for_each_entry(led_cdev, &trig->led_cdevs, trig_list) {
if (!strcmp(led_cdev->default_trigger, trig->name)) {
read_unlock(&trig->leddev_list_lock);
return led_cdev;
}
}
read_unlock(&trig->leddev_list_lock);
return NULL;
}
void led_init_core(struct led_classdev *led_cdev);
void led_stop_software_blink(struct led_classdev *led_cdev);
extern struct rw_semaphore leds_list_lock;
extern struct list_head leds_list;
#endif /* __LEDS_H_INCLUDED */
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