drivers/leds/leds.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * LED Core
   4  *
   5  * Copyright 2005 Openedhand Ltd.
   6  *
   7  * Author: Richard Purdie <rpurdie@openedhand.com>
   8  */
   9 #ifndef __LEDS_H_INCLUDED
  10 #define __LEDS_H_INCLUDED
  11
  12 #include <linux/rwsem.h>
  13 #include <linux/leds.h>
  14
  15 static inline int led_get_brightness(struct led_classdev *led_cdev)
  16 {
  17         return led_cdev->brightness;
  18 }
  19
  20 void led_init_core(struct led_classdev *led_cdev);
  21 void led_stop_software_blink(struct led_classdev *led_cdev);
  22 void led_set_brightness_nopm(struct led_classdev *led_cdev, unsigned int value);
  23 void led_set_brightness_nosleep(struct led_classdev *led_cdev, unsigned int value);
  24 ssize_t led_trigger_read(struct file *filp, struct kobject *kobj,
  25                         struct bin_attribute *attr, char *buf,
  26                         loff_t pos, size_t count);
  27 ssize_t led_trigger_write(struct file *filp, struct kobject *kobj,
  28                         struct bin_attribute *bin_attr, char *buf,
  29                         loff_t pos, size_t count);
  30
  31 extern struct rw_semaphore leds_list_lock;
  32 extern struct list_head leds_list;
  33
  34 #endif  /* __LEDS_H_INCLUDED */