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/rwsem.h> 17 #include <linux/leds.h> 18 19 static inline void led_set_brightness_async(struct led_classdev *led_cdev, 20 enum led_brightness value) 21 { 22 value = min(value, led_cdev->max_brightness); 23 led_cdev->brightness = value; 24 25 if (!(led_cdev->flags & LED_SUSPENDED)) 26 led_cdev->brightness_set(led_cdev, value); 27 } 28 29 static inline int led_set_brightness_sync(struct led_classdev *led_cdev, 30 enum led_brightness value) 31 { 32 int ret = 0; 33 34 led_cdev->brightness = min(value, led_cdev->max_brightness); 35 36 if (!(led_cdev->flags & LED_SUSPENDED)) 37 ret = led_cdev->brightness_set_sync(led_cdev, 38 led_cdev->brightness); 39 return ret; 40 } 41 42 static inline int led_get_brightness(struct led_classdev *led_cdev) 43 { 44 return led_cdev->brightness; 45 } 46 47 void led_stop_software_blink(struct led_classdev *led_cdev); 48 49 extern struct rw_semaphore leds_list_lock; 50 extern struct list_head leds_list; 51 52 #endif /* __LEDS_H_INCLUDED */ 53