linux-imx

/*

 * saa7110 - Philips SAA7110(A) video decoder driver

 *

 * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>

 *

 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>

 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>

 *    - some corrections for Pinnacle Systems Inc. DC10plus card.

 *

 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>

 *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)

 *

 * 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; either version 2 of the License, or

 * (at your option) any later version.

 *

 * 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/types.h>

#include <linux/delay.h>

#include <linux/slab.h>

#include <linux/wait.h>

#include <linux/uaccess.h>

#include <linux/i2c.h>

#include <linux/videodev2.h>

#include <media/v4l2-device.h>

#include <media/v4l2-ctrls.h>

​

MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");

MODULE_AUTHOR("Pauline Middelink");

MODULE_LICENSE("GPL");

​

​

static int debug;

module_param(debug, int, 0);

MODULE_PARM_DESC(debug, "Debug level (0-1)");

​

#define SAA7110_MAX_INPUT   9   /* 6 CVBS, 3 SVHS */

#define SAA7110_MAX_OUTPUT  1   /* 1 YUV */

​

#define SAA7110_NR_REG      0x35

​

struct saa7110 {

    struct v4l2_subdev sd;

    struct v4l2_ctrl_handler hdl;

    u8 reg[SAA7110_NR_REG];

​

    v4l2_std_id norm;

    int input;

    int enable;

​

    wait_queue_head_t wq;

};

​

static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)

{