leds.h

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/*
 * LED Core
 *
 * Copyright 2005 Openedhand Ltd.
 *
 * Author: Richard Purdie <[email protected]>
 *
 * 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/device.h>
#include <linux/rwsem.h>
#include <linux/leds.h>

static inline void __led_set_brightness(struct led_classdev *led_cdev,
                    enum led_brightness value)
{
    if (value > led_cdev->max_brightness)
        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_get_brightness(struct led_classdev *led_cdev)
{
    return led_cdev->brightness;
}

void led_stop_software_blink(struct led_classdev *led_cdev);

extern struct rw_semaphore leds_list_lock;
extern struct list_head leds_list;

#ifdef CONFIG_LEDS_TRIGGERS
void led_trigger_set_default(struct led_classdev *led_cdev);
void led_trigger_set(struct led_classdev *led_cdev,
            struct led_trigger *trigger);
void led_trigger_remove(struct led_classdev *led_cdev);

static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
{
    return led_cdev->trigger_data;
}

#else
#define led_trigger_set_default(x) do {} while (0)
#define led_trigger_set(x, y) do {} while (0)
#define led_trigger_remove(x) do {} while (0)
#define led_get_trigger_data(x) (NULL)
#endif

ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
            const char *buf, size_t count);
ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
            char *buf);

#endif  /* __LEDS_H_INCLUDED */