linux-imx

/*

 * Copyright (C) 2005-2006 Micronas USA Inc.

 *

 * 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.

 */

​

#include <linux/module.h>

#include <linux/init.h>

#include <linux/i2c.h>

#include <linux/videodev2.h>

#include <linux/ioctl.h>

#include <media/v4l2-device.h>

#include <media/v4l2-ctrls.h>

#include <linux/slab.h>

​

MODULE_DESCRIPTION("TW9903 I2C subdev driver");

MODULE_LICENSE("GPL v2");

​

/*

 * This driver is based on the wis-tw9903.c source that was in

 * drivers/staging/media/go7007. That source had commented out code for

 * saturation and scaling (neither seemed to work). If anyone ever gets

 * hardware to test this driver, then that code might be useful to look at.

 * You need to get the kernel sources of, say, kernel 3.8 where that

 * wis-tw9903 driver is still present.

 */

​

struct tw9903 {

    struct v4l2_subdev sd;

    struct v4l2_ctrl_handler hdl;

    v4l2_std_id norm;

};

​

static inline struct tw9903 *to_state(struct v4l2_subdev *sd)

{

    return container_of(sd, struct tw9903, sd);

}

​

static const u8 initial_registers[] = {

    0x02, 0x44, /* input 1, composite */

    0x03, 0x92, /* correct digital format */

    0x04, 0x00,

    0x05, 0x80, /* or 0x00 for PAL */

    0x06, 0x40, /* second internal current reference */

    0x07, 0x02, /* window */

    0x08, 0x14, /* window */

    0x09, 0xf0, /* window */

    0x0a, 0x81, /* window */

    0x0b, 0xd0, /* window */

    0x0c, 0x8c,

    0x0d, 0x00, /* scaling */

    0x0e, 0x11, /* scaling */

    0x0f, 0x00, /* scaling */

    0x10, 0x00, /* brightness */

    0x11, 0x60, /* contrast */

    0x12, 0x01, /* sharpness */

    0x13, 0x7f, /* U gain */

    0x14, 0x5a, /* V gain */

    0x15, 0x00, /* hue */

    0x16, 0xc3, /* sharpness */

    0x18, 0x00,

    0x19, 0x58, /* vbi */

    0x1a, 0x80,

    0x1c, 0x0f, /* video norm */

    0x1d, 0x7f, /* video norm */

    0x20, 0xa0, /* clamping gain (working 0x50) */

    0x21, 0x22,

    0x22, 0xf0,

    0x23, 0xfe,

    0x24, 0x3c,

    0x25, 0x38,

    0x26, 0x44,

    0x27, 0x20,

    0x28, 0x00,

    0x29, 0x15,

    0x2a, 0xa0,

    0x2b, 0x44,

    0x2c, 0x37,

    0x2d, 0x00,

    0x2e, 0xa5, /* burst PLL control (working: a9) */

    0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */

    0x31, 0x00,

    0x33, 0x22,

    0x34, 0x11,

    0x35, 0x35,