// SPDX-License-Identifier: GPL-2.0-only /* * Camera Flash and Torch On/Off Trigger * * based on ledtrig-ide-disk.c * * Copyright 2013 Texas Instruments * * Author: Milo(Woogyom) Kim <milo.kim@ti.com> */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/leds.h> DEFINE_LED_TRIGGER(ledtrig_flash); DEFINE_LED_TRIGGER(ledtrig_torch); void ledtrig_flash_ctrl(bool on) { enum led_brightness brt = on ? LED_FULL : LED_OFF; led_trigger_event(ledtrig_flash, brt); } EXPORT_SYMBOL_GPL(ledtrig_flash_ctrl); void ledtrig_torch_ctrl(bool on) { enum led_brightness brt = on ? LED_FULL : LED_OFF; led_trigger_event(ledtrig_torch, brt); } EXPORT_SYMBOL_GPL(ledtrig_torch_ctrl); static int __init ledtrig_camera_init(void) { led_trigger_register_simple("flash", &ledtrig_flash); led_trigger_register_simple("torch", &ledtrig_torch); return 0; } module_init(ledtrig_camera_init); static void __exit ledtrig_camera_exit(void) { led_trigger_unregister_simple(ledtrig_torch); led_trigger_unregister_simple(ledtrig_flash); } module_exit(ledtrig_camera_exit); MODULE_DESCRIPTION("LED Trigger for Camera Flash/Torch Control"); MODULE_AUTHOR("Milo Kim"); MODULE_LICENSE("GPL v2");