Release 4.7 drivers/leds/trigger/ledtrig-camera.c

/*
 * 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);
}
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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);
}
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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;
}
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module_init(ledtrig_camera_init);



static void __exit ledtrig_camera_exit(void)
{
	led_trigger_unregister_simple(ledtrig_torch);
	led_trigger_unregister_simple(ledtrig_flash);
}
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module_exit(ledtrig_camera_exit);

MODULE_DESCRIPTION("LED Trigger for Camera Flash/Torch Control");
MODULE_AUTHOR("Milo Kim");
MODULE_LICENSE("GPL");
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Directory: drivers/leds/trigger

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