leds.h 1.2 KB
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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

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#include <linux/rwsem.h>
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#include <linux/leds.h>

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static inline void led_set_brightness_async(struct led_classdev *led_cdev,
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					enum led_brightness value)
{
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	value = min(value, led_cdev->max_brightness);
	led_cdev->brightness = value;
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	if (!(led_cdev->flags & LED_SUSPENDED))
		led_cdev->brightness_set(led_cdev, value);
}

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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;
}

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static inline int led_get_brightness(struct led_classdev *led_cdev)
{
	return led_cdev->brightness;
}

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void led_stop_software_blink(struct led_classdev *led_cdev);

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extern struct rw_semaphore leds_list_lock;
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extern struct list_head leds_list;

#endif	/* __LEDS_H_INCLUDED */