| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame] | 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_init_core(struct led_classdev *led_cdev); |
| 48 | void led_stop_software_blink(struct led_classdev *led_cdev); |
| 49 | |
| 50 | extern struct rw_semaphore leds_list_lock; |
| 51 | extern struct list_head leds_list; |
| 52 | |
| 53 | #endif /* __LEDS_H_INCLUDED */ |