drivers/leds/leds.h

   1 /*
   2  * LED Core
   3  *
   4  * Copyright 2005 Openedhand Ltd.
   5  *
   6  * Author: Richard Purdie <rpurdie@openedhand.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13 #ifndef __LEDS_H_INCLUDED
  14 #define __LEDS_H_INCLUDED
  15
  16 #include <linux/leds.h>
  17
  18 static inline void led_set_brightness(struct led_classdev *led_cdev,
  19                                         enum led_brightness value)
  20 {
  21         if (value > LED_FULL)
  22                 value = LED_FULL;
  23         led_cdev->brightness = value;
  24         if (!(led_cdev->flags & LED_SUSPENDED))
  25                 led_cdev->brightness_set(led_cdev, value);
  26 }
  27
  28 extern rwlock_t leds_list_lock;
  29 extern struct list_head leds_list;
  30
  31 #ifdef CONFIG_LEDS_TRIGGERS
  32 void led_trigger_set_default(struct led_classdev *led_cdev);
  33 void led_trigger_set(struct led_classdev *led_cdev,
  34                         struct led_trigger *trigger);
  35 #else
  36 #define led_trigger_set_default(x) do {} while(0)
  37 #define led_trigger_set(x, y) do {} while(0)
  38 #endif
  39
  40 ssize_t led_trigger_store(struct class_device *dev, const char *buf,
  41                         size_t count);
  42 ssize_t led_trigger_show(struct class_device *dev, char *buf);
  43
  44 #endif  /* __LEDS_H_INCLUDED */