| /* |
| * 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 */ |