projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c72a1d60 RP |
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 | ||
| f8a7c6fe | 16 | #include <linux/device.h> |
| 72f8da32 | 17 | #include <linux/rwsem.h> |
| c72a1d60 RP |
18 | #include <linux/leds.h> |
| 19 | ||
| 4d71a4a1 | 20 | static inline void led_set_brightness_async(struct led_classdev *led_cdev, |
| c72a1d60 RP |
21 | enum led_brightness value) |
| 22 | { | |
| 56d06fde GM |
23 | value = min(value, led_cdev->max_brightness); |
| 24 | led_cdev->brightness = value; | |
| 4d71a4a1 | 25 | |
| c72a1d60 RP |
26 | if (!(led_cdev->flags & LED_SUSPENDED)) |
| 27 | led_cdev->brightness_set(led_cdev, value); | |
| 28 | } | |
| 29 | ||
| 4d71a4a1 JA |
30 | static inline int led_set_brightness_sync(struct led_classdev *led_cdev, |
| 31 | enum led_brightness value) | |
| 32 | { | |
| 33 | int ret = 0; | |
| 34 | ||
| 35 | led_cdev->brightness = min(value, led_cdev->max_brightness); | |
| 36 | ||
| 37 | if (!(led_cdev->flags & LED_SUSPENDED)) | |
| 38 | ret = led_cdev->brightness_set_sync(led_cdev, | |
| 39 | led_cdev->brightness); | |
| 40 | return ret; | |
| 41 | } | |
| 42 | ||
| 0013b23d NM |
43 | static inline int led_get_brightness(struct led_classdev *led_cdev) |
| 44 | { | |
| 45 | return led_cdev->brightness; | |
| 46 | } | |
| 47 | ||
| d23a22a7 FB |
48 | void led_stop_software_blink(struct led_classdev *led_cdev); |
| 49 | ||
| 72f8da32 | 50 | extern struct rw_semaphore leds_list_lock; |
| c72a1d60 RP |
51 | extern struct list_head leds_list; |
| 52 | ||
| c3bc9956 RP |
53 | #ifdef CONFIG_LEDS_TRIGGERS |
| 54 | void led_trigger_set_default(struct led_classdev *led_cdev); | |
| 55 | void led_trigger_set(struct led_classdev *led_cdev, | |
| 56 | struct led_trigger *trigger); | |
| 0013b23d | 57 | void led_trigger_remove(struct led_classdev *led_cdev); |
| fff26f81 EH |
58 | |
| 59 | static inline void *led_get_trigger_data(struct led_classdev *led_cdev) | |
| 60 | { | |
| 61 | return led_cdev->trigger_data; | |
| 62 | } | |
| 63 | ||
| c3bc9956 | 64 | #else |
| 4d404fd5 NM |
65 | #define led_trigger_set_default(x) do {} while (0) |
| 66 | #define led_trigger_set(x, y) do {} while (0) | |
| 67 | #define led_trigger_remove(x) do {} while (0) | |
| fff26f81 | 68 | #define led_get_trigger_data(x) (NULL) |
| c3bc9956 RP |
69 | #endif |
| 70 | ||
| f8a7c6fe RP |
71 | ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr, |
| 72 | const char *buf, size_t count); | |
| 73 | ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr, | |
| 74 | char *buf); | |
| c3bc9956 | 75 | |
| c72a1d60 | 76 | #endif /* __LEDS_H_INCLUDED */ |