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 enum led_default_state led_init_default_state_get(struct fwnode_handle *fwnode); 31 32 extern struct rw_semaphore leds_list_lock; 33 extern struct list_head leds_list; 34 extern struct list_head trigger_list; 35 extern const char * const led_colors[LED_COLOR_ID_MAX]; 36 37 #endif /* __LEDS_H_INCLUDED */ 38