ledtrig-camera.c
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/*
* 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>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#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");