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/device.h> 17 #include <linux/rwsem.h> 18 #include <linux/leds.h> 19 20 static inline void led_set_brightness(struct led_classdev *led_cdev, 21 enum led_brightness value) 22 { 23 if (value > LED_FULL) 24 value = LED_FULL; 25 led_cdev->brightness = value; 26 if (!(led_cdev->flags & LED_SUSPENDED)) 27 led_cdev->brightness_set(led_cdev, value); 28 } 29 30 extern struct rw_semaphore leds_list_lock; 31 extern struct list_head leds_list; 32 33 #ifdef CONFIG_LEDS_TRIGGERS 34 void led_trigger_set_default(struct led_classdev *led_cdev); 35 void led_trigger_set(struct led_classdev *led_cdev, 36 struct led_trigger *trigger); 37 #else 38 #define led_trigger_set_default(x) do {} while(0) 39 #define led_trigger_set(x, y) do {} while(0) 40 #endif 41 42 ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr, 43 const char *buf, size_t count); 44 ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr, 45 char *buf); 46 47 #endif /* __LEDS_H_INCLUDED */ 48