linux/drivers/leds/leds.h
Shuah Khan 0da3e65ba8 leds: Rename led_set_brightness() to __led_set_brightness()
Rename leds internal interface led_set_brightness() to __led_set_brightness()
to reduce confusion between led_set_brightness() and the external interface
led_brightness_set(). led_brightness_set() cancels the timer and then calls
led_set_brightness().

Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
2012-07-24 07:52:34 +08:00

62 lines
1.6 KiB
C

/*
* 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/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;
}
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 */