linux_kernel/include/media/i2c/as3645a.h

/*
 * include/media/i2c/as3645a.h
 *
 * Copyright (C) 2008-2011 Nokia Corporation
 *
 * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 */

#ifndef __AS3645A_H__
#define __AS3645A_H__

#include <media/v4l2-subdev.h>

#define AS3645A_NAME				"as3645a"
#define AS3645A_I2C_ADDR			(0x60 >> 1) /* W:0x60, R:0x61 */

#define AS3645A_FLASH_TIMEOUT_MIN		100000	/* us */
#define AS3645A_FLASH_TIMEOUT_MAX		850000
#define AS3645A_FLASH_TIMEOUT_STEP		50000

#define AS3645A_FLASH_INTENSITY_MIN		200	/* mA */
#define AS3645A_FLASH_INTENSITY_MAX_1LED	500
#define AS3645A_FLASH_INTENSITY_MAX_2LEDS	400
#define AS3645A_FLASH_INTENSITY_STEP		20

#define AS3645A_TORCH_INTENSITY_MIN		20	/* mA */
#define AS3645A_TORCH_INTENSITY_MAX		160
#define AS3645A_TORCH_INTENSITY_STEP		20

#define AS3645A_INDICATOR_INTENSITY_MIN		0	/* uA */
#define AS3645A_INDICATOR_INTENSITY_MAX		10000
#define AS3645A_INDICATOR_INTENSITY_STEP	2500

/*
 * as3645a_platform_data - Flash controller platform data
 * @set_power:	Set power callback
 * @vref:	VREF offset (0=0V, 1=+0.3V, 2=-0.3V, 3=+0.6V)
 * @peak:	Inductor peak current limit (0=1.25A, 1=1.5A, 2=1.75A, 3=2.0A)
 * @ext_strobe:	True if external flash strobe can be used
 * @flash_max_current:	Max flash current (mA, <= AS3645A_FLASH_INTENSITY_MAX)
 * @torch_max_current:	Max torch current (mA, >= AS3645A_TORCH_INTENSITY_MAX)
 * @timeout_max:	Max flash timeout (us, <= AS3645A_FLASH_TIMEOUT_MAX)
 */
struct as3645a_platform_data {
	int (*set_power)(struct v4l2_subdev *subdev, int on);
	unsigned int vref;
	unsigned int peak;
	bool ext_strobe;

	/* Flash and torch currents and timeout limits */
	unsigned int flash_max_current;
	unsigned int torch_max_current;
	unsigned int timeout_max;
};

#endif /* __AS3645A_H__ */