linux-imx

/*

 * ths7303/53- THS7303/53 Video Amplifier driver

 *

 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/

 * Copyright 2013 Cisco Systems, Inc. and/or its affiliates.

 *

 * Author: Chaithrika U S <chaithrika@ti.com>

 *

 * Contributors:

 *     Hans Verkuil <hans.verkuil@cisco.com>

 *     Lad, Prabhakar <prabhakar.lad@ti.com>

 *     Martin Bugge <marbugge@cisco.com>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation version 2.

 *

 * This program is distributed .as is. WITHOUT ANY WARRANTY of any

 * kind, whether express or implied; without even the implied warranty

 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

​

#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/slab.h>

​

#include <media/i2c/ths7303.h>

#include <media/v4l2-device.h>

​

#define THS7303_CHANNEL_1   1

#define THS7303_CHANNEL_2   2

#define THS7303_CHANNEL_3   3

​

struct ths7303_state {

    struct v4l2_subdev      sd;

    const struct ths7303_platform_data *pdata;

    struct v4l2_bt_timings      bt;

    int std_id;

    int stream_on;

};

​

enum ths7303_filter_mode {

    THS7303_FILTER_MODE_480I_576I,

    THS7303_FILTER_MODE_480P_576P,

    THS7303_FILTER_MODE_720P_1080I,

    THS7303_FILTER_MODE_1080P,

    THS7303_FILTER_MODE_DISABLE

};

​

MODULE_DESCRIPTION("TI THS7303 video amplifier driver");

MODULE_AUTHOR("Chaithrika U S");

MODULE_LICENSE("GPL");

​

static inline struct ths7303_state *to_state(struct v4l2_subdev *sd)

{

    return container_of(sd, struct ths7303_state, sd);

}

​

static int ths7303_read(struct v4l2_subdev *sd, u8 reg)

{

    struct i2c_client *client = v4l2_get_subdevdata(sd);

​