162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Camera Flash and Torch On/Off Trigger 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * based on ledtrig-ide-disk.c 662306a36Sopenharmony_ci * 762306a36Sopenharmony_ci * Copyright 2013 Texas Instruments 862306a36Sopenharmony_ci * 962306a36Sopenharmony_ci * Author: Milo(Woogyom) Kim <milo.kim@ti.com> 1062306a36Sopenharmony_ci */ 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <linux/module.h> 1362306a36Sopenharmony_ci#include <linux/kernel.h> 1462306a36Sopenharmony_ci#include <linux/init.h> 1562306a36Sopenharmony_ci#include <linux/leds.h> 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ciDEFINE_LED_TRIGGER(ledtrig_flash); 1862306a36Sopenharmony_ciDEFINE_LED_TRIGGER(ledtrig_torch); 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_civoid ledtrig_flash_ctrl(bool on) 2162306a36Sopenharmony_ci{ 2262306a36Sopenharmony_ci enum led_brightness brt = on ? LED_FULL : LED_OFF; 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ci led_trigger_event(ledtrig_flash, brt); 2562306a36Sopenharmony_ci} 2662306a36Sopenharmony_ciEXPORT_SYMBOL_GPL(ledtrig_flash_ctrl); 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_civoid ledtrig_torch_ctrl(bool on) 2962306a36Sopenharmony_ci{ 3062306a36Sopenharmony_ci enum led_brightness brt = on ? LED_FULL : LED_OFF; 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ci led_trigger_event(ledtrig_torch, brt); 3362306a36Sopenharmony_ci} 3462306a36Sopenharmony_ciEXPORT_SYMBOL_GPL(ledtrig_torch_ctrl); 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_cistatic int __init ledtrig_camera_init(void) 3762306a36Sopenharmony_ci{ 3862306a36Sopenharmony_ci led_trigger_register_simple("flash", &ledtrig_flash); 3962306a36Sopenharmony_ci led_trigger_register_simple("torch", &ledtrig_torch); 4062306a36Sopenharmony_ci return 0; 4162306a36Sopenharmony_ci} 4262306a36Sopenharmony_cimodule_init(ledtrig_camera_init); 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_cistatic void __exit ledtrig_camera_exit(void) 4562306a36Sopenharmony_ci{ 4662306a36Sopenharmony_ci led_trigger_unregister_simple(ledtrig_torch); 4762306a36Sopenharmony_ci led_trigger_unregister_simple(ledtrig_flash); 4862306a36Sopenharmony_ci} 4962306a36Sopenharmony_cimodule_exit(ledtrig_camera_exit); 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ciMODULE_DESCRIPTION("LED Trigger for Camera Flash/Torch Control"); 5262306a36Sopenharmony_ciMODULE_AUTHOR("Milo Kim"); 5362306a36Sopenharmony_ciMODULE_LICENSE("GPL v2"); 54