cx231xx-417.c

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/*
 *
 *  Support for a cx23417 mpeg encoder via cx231xx host port.
 *
 *    (c) 2004 Jelle Foks <[email protected]>
 *    (c) 2004 Gerd Knorr <[email protected]>
 *    (c) 2008 Steven Toth <[email protected]>
 *      - CX23885/7/8 support
 *
 *  Includes parts from the ivtv driver( http://ivtv.sourceforge.net/),
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/vmalloc.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/cx2341x.h>
#include <linux/usb.h>

#include "cx231xx.h"
/*#include "cx23885-ioctl.h"*/

#define CX231xx_FIRM_IMAGE_SIZE 376836
#define CX231xx_FIRM_IMAGE_NAME "v4l-cx23885-enc.fw"

/* for polaris ITVC */
#define ITVC_WRITE_DIR          0x03FDFC00
#define ITVC_READ_DIR            0x0001FC00

#define  MCI_MEMORY_DATA_BYTE0          0x00
#define  MCI_MEMORY_DATA_BYTE1          0x08
#define  MCI_MEMORY_DATA_BYTE2          0x10
#define  MCI_MEMORY_DATA_BYTE3          0x18

#define  MCI_MEMORY_ADDRESS_BYTE2       0x20
#define  MCI_MEMORY_ADDRESS_BYTE1       0x28
#define  MCI_MEMORY_ADDRESS_BYTE0       0x30

#define  MCI_REGISTER_DATA_BYTE0        0x40
#define  MCI_REGISTER_DATA_BYTE1        0x48
#define  MCI_REGISTER_DATA_BYTE2        0x50
#define  MCI_REGISTER_DATA_BYTE3        0x58

#define  MCI_REGISTER_ADDRESS_BYTE0     0x60
#define  MCI_REGISTER_ADDRESS_BYTE1     0x68

#define  MCI_REGISTER_MODE              0x70

/* Read and write modes for polaris ITVC */
#define  MCI_MODE_REGISTER_READ         0x000
#define  MCI_MODE_REGISTER_WRITE        0x100
#define  MCI_MODE_MEMORY_READ           0x000
#define  MCI_MODE_MEMORY_WRITE          0x4000

static unsigned int mpegbufs = 8;
module_param(mpegbufs, int, 0644);
MODULE_PARM_DESC(mpegbufs, "number of mpeg buffers, range 2-32");
static unsigned int mpeglines = 128;
module_param(mpeglines, int, 0644);
MODULE_PARM_DESC(mpeglines, "number of lines in an MPEG buffer, range 2-32");
static unsigned int mpeglinesize = 512;
module_param(mpeglinesize, int, 0644);
MODULE_PARM_DESC(mpeglinesize,
    "number of bytes in each line of an MPEG buffer, range 512-1024");

static unsigned int v4l_debug = 1;
module_param(v4l_debug, int, 0644);
MODULE_PARM_DESC(v4l_debug, "enable V4L debug messages");
struct cx231xx_dmaqueue *dma_qq;
#define dprintk(level, fmt, arg...)\
    do { if (v4l_debug >= level) \
        printk(KERN_INFO "%s: " fmt, \
        (dev) ? dev->name : "cx231xx[?]", ## arg); \
    } while (0)

static struct cx231xx_tvnorm cx231xx_tvnorms[] = {
    {
        .name      = "NTSC-M",
        .id        = V4L2_STD_NTSC_M,
    }, {
        .name      = "NTSC-JP",
        .id        = V4L2_STD_NTSC_M_JP,
    }, {
        .name      = "PAL-BG",
        .id        = V4L2_STD_PAL_BG,
    }, {
        .name      = "PAL-DK",
        .id        = V4L2_STD_PAL_DK,
    }, {
        .name      = "PAL-I",
        .id        = V4L2_STD_PAL_I,
    }, {
        .name      = "PAL-M",
        .id        = V4L2_STD_PAL_M,
    }, {
        .name      = "PAL-N",
        .id        = V4L2_STD_PAL_N,
    }, {
        .name      = "PAL-Nc",
        .id        = V4L2_STD_PAL_Nc,
    }, {
        .name      = "PAL-60",
        .id        = V4L2_STD_PAL_60,
    }, {
        .name      = "SECAM-L",
        .id        = V4L2_STD_SECAM_L,
    }, {
        .name      = "SECAM-DK",
        .id        = V4L2_STD_SECAM_DK,
    }
};

/* ------------------------------------------------------------------ */
enum cx231xx_capture_type {
    CX231xx_MPEG_CAPTURE,
    CX231xx_RAW_CAPTURE,
    CX231xx_RAW_PASSTHRU_CAPTURE
};
enum cx231xx_capture_bits {
    CX231xx_RAW_BITS_NONE             = 0x00,
    CX231xx_RAW_BITS_YUV_CAPTURE      = 0x01,
    CX231xx_RAW_BITS_PCM_CAPTURE      = 0x02,
    CX231xx_RAW_BITS_VBI_CAPTURE      = 0x04,
    CX231xx_RAW_BITS_PASSTHRU_CAPTURE = 0x08,
    CX231xx_RAW_BITS_TO_HOST_CAPTURE  = 0x10
};
enum cx231xx_capture_end {
    CX231xx_END_AT_GOP, /* stop at the end of gop, generate irq */
    CX231xx_END_NOW, /* stop immediately, no irq */
};
enum cx231xx_framerate {
    CX231xx_FRAMERATE_NTSC_30, /* NTSC: 30fps */
    CX231xx_FRAMERATE_PAL_25   /* PAL: 25fps */
};
enum cx231xx_stream_port {
    CX231xx_OUTPUT_PORT_MEMORY,
    CX231xx_OUTPUT_PORT_STREAMING,
    CX231xx_OUTPUT_PORT_SERIAL
};
enum cx231xx_data_xfer_status {
    CX231xx_MORE_BUFFERS_FOLLOW,
    CX231xx_LAST_BUFFER,
};
enum cx231xx_picture_mask {
    CX231xx_PICTURE_MASK_NONE,
    CX231xx_PICTURE_MASK_I_FRAMES,
    CX231xx_PICTURE_MASK_I_P_FRAMES = 0x3,
    CX231xx_PICTURE_MASK_ALL_FRAMES = 0x7,
};
enum cx231xx_vbi_mode_bits {
    CX231xx_VBI_BITS_SLICED,
    CX231xx_VBI_BITS_RAW,
};
enum cx231xx_vbi_insertion_bits {
    CX231xx_VBI_BITS_INSERT_IN_XTENSION_USR_DATA,
    CX231xx_VBI_BITS_INSERT_IN_PRIVATE_PACKETS = 0x1 << 1,
    CX231xx_VBI_BITS_SEPARATE_STREAM = 0x2 << 1,
    CX231xx_VBI_BITS_SEPARATE_STREAM_USR_DATA = 0x4 << 1,
    CX231xx_VBI_BITS_SEPARATE_STREAM_PRV_DATA = 0x5 << 1,
};
enum cx231xx_dma_unit {
    CX231xx_DMA_BYTES,
    CX231xx_DMA_FRAMES,
};
enum cx231xx_dma_transfer_status_bits {
    CX231xx_DMA_TRANSFER_BITS_DONE = 0x01,
    CX231xx_DMA_TRANSFER_BITS_ERROR = 0x04,
    CX231xx_DMA_TRANSFER_BITS_LL_ERROR = 0x10,
};
enum cx231xx_pause {
    CX231xx_PAUSE_ENCODING,
    CX231xx_RESUME_ENCODING,
};
enum cx231xx_copyright {
    CX231xx_COPYRIGHT_OFF,
    CX231xx_COPYRIGHT_ON,
};
enum cx231xx_notification_type {
    CX231xx_NOTIFICATION_REFRESH,
};
enum cx231xx_notification_status {
    CX231xx_NOTIFICATION_OFF,
    CX231xx_NOTIFICATION_ON,
};
enum cx231xx_notification_mailbox {
    CX231xx_NOTIFICATION_NO_MAILBOX = -1,
};
enum cx231xx_field1_lines {
    CX231xx_FIELD1_SAA7114 = 0x00EF, /* 239 */
    CX231xx_FIELD1_SAA7115 = 0x00F0, /* 240 */
    CX231xx_FIELD1_MICRONAS = 0x0105, /* 261 */
};
enum cx231xx_field2_lines {
    CX231xx_FIELD2_SAA7114 = 0x00EF, /* 239 */
    CX231xx_FIELD2_SAA7115 = 0x00F0, /* 240 */
    CX231xx_FIELD2_MICRONAS = 0x0106, /* 262 */
};
enum cx231xx_custom_data_type {
    CX231xx_CUSTOM_EXTENSION_USR_DATA,
    CX231xx_CUSTOM_PRIVATE_PACKET,
};
enum cx231xx_mute {
    CX231xx_UNMUTE,
    CX231xx_MUTE,
};
enum cx231xx_mute_video_mask {
    CX231xx_MUTE_VIDEO_V_MASK = 0x0000FF00,
    CX231xx_MUTE_VIDEO_U_MASK = 0x00FF0000,
    CX231xx_MUTE_VIDEO_Y_MASK = 0xFF000000,
};
enum cx231xx_mute_video_shift {
    CX231xx_MUTE_VIDEO_V_SHIFT = 8,
    CX231xx_MUTE_VIDEO_U_SHIFT = 16,
    CX231xx_MUTE_VIDEO_Y_SHIFT = 24,
};

/* defines below are from ivtv-driver.h */
#define IVTV_CMD_HW_BLOCKS_RST 0xFFFFFFFF

/* Firmware API commands */
#define IVTV_API_STD_TIMEOUT 500

/* Registers */
/* IVTV_REG_OFFSET */
#define IVTV_REG_ENC_SDRAM_REFRESH (0x07F8)
#define IVTV_REG_ENC_SDRAM_PRECHARGE (0x07FC)
#define IVTV_REG_SPU (0x9050)
#define IVTV_REG_HW_BLOCKS (0x9054)
#define IVTV_REG_VPU (0x9058)
#define IVTV_REG_APU (0xA064)

/*
 * Bit definitions for MC417_RWD and MC417_OEN registers
 *
 * bits 31-16
 *+-----------+
 *| Reserved  |
 *|+-----------+
 *|  bit 15  bit 14  bit 13 bit 12  bit 11  bit 10  bit 9   bit 8
 *|+-------+-------+-------+-------+-------+-------+-------+-------+
 *|| MIWR# | MIRD# | MICS# |MIRDY# |MIADDR3|MIADDR2|MIADDR1|MIADDR0|
 *|+-------+-------+-------+-------+-------+-------+-------+-------+
 *| bit 7   bit 6   bit 5   bit 4   bit 3   bit 2   bit 1   bit 0
 *|+-------+-------+-------+-------+-------+-------+-------+-------+
 *||MIDATA7|MIDATA6|MIDATA5|MIDATA4|MIDATA3|MIDATA2|MIDATA1|MIDATA0|
 *|+-------+-------+-------+-------+-------+-------+-------+-------+
 */
#define MC417_MIWR  0x8000
#define MC417_MIRD  0x4000
#define MC417_MICS  0x2000
#define MC417_MIRDY 0x1000
#define MC417_MIADDR    0x0F00
#define MC417_MIDATA    0x00FF


/* Bit definitions for MC417_CTL register ****
 *bits 31-6   bits 5-4   bit 3    bits 2-1       Bit 0
 *+--------+-------------+--------+--------------+------------+
 *|Reserved|MC417_SPD_CTL|Reserved|MC417_GPIO_SEL|UART_GPIO_EN|
 *+--------+-------------+--------+--------------+------------+
 */
#define MC417_SPD_CTL(x)    (((x) << 4) & 0x00000030)
#define MC417_GPIO_SEL(x)   (((x) << 1) & 0x00000006)
#define MC417_UART_GPIO_EN  0x00000001

/* Values for speed control */
#define MC417_SPD_CTL_SLOW  0x1
#define MC417_SPD_CTL_MEDIUM    0x0
#define MC417_SPD_CTL_FAST  0x3     /* b'1x, but we use b'11 */

/* Values for GPIO select */
#define MC417_GPIO_SEL_GPIO3    0x3
#define MC417_GPIO_SEL_GPIO2    0x2
#define MC417_GPIO_SEL_GPIO1    0x1
#define MC417_GPIO_SEL_GPIO0    0x0


#define CX23417_GPIO_MASK 0xFC0003FF
static int setITVCReg(struct cx231xx *dev, u32 gpio_direction, u32 value)
{
    int status = 0;
    u32 _gpio_direction = 0;

    _gpio_direction = _gpio_direction & CX23417_GPIO_MASK;
    _gpio_direction = _gpio_direction|gpio_direction;
    status = cx231xx_send_gpio_cmd(dev, _gpio_direction,
             (u8 *)&value, 4, 0, 0);
    return status;
}
static int getITVCReg(struct cx231xx *dev, u32 gpio_direction, u32 *pValue)
{
    int status = 0;
    u32 _gpio_direction = 0;

    _gpio_direction = _gpio_direction & CX23417_GPIO_MASK;
    _gpio_direction = _gpio_direction|gpio_direction;

    status = cx231xx_send_gpio_cmd(dev, _gpio_direction,
         (u8 *)pValue, 4, 0, 1);
    return status;
}

static int waitForMciComplete(struct cx231xx *dev)
{
    u32 gpio;
    u32 gpio_driection = 0;
    u8 count = 0;
    getITVCReg(dev, gpio_driection, &gpio);

    while (!(gpio&0x020000)) {
        msleep(10);

        getITVCReg(dev, gpio_driection, &gpio);

        if (count++ > 100) {
            dprintk(3, "ERROR: Timeout - gpio=%x\n", gpio);
            return -1;
        }
    }
    return 0;
}

static int mc417_register_write(struct cx231xx *dev, u16 address, u32 value)
{
    u32 temp;
    int status = 0;

    temp = 0x82|MCI_REGISTER_DATA_BYTE0|((value&0x000000FF)<<8);
    temp = temp<<10;
    status = setITVCReg(dev, ITVC_WRITE_DIR, temp);
    if (status < 0)
        return status;
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write data byte 1;*/
    temp = 0x82|MCI_REGISTER_DATA_BYTE1|(value&0x0000FF00);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write data byte 2;*/
    temp = 0x82|MCI_REGISTER_DATA_BYTE2|((value&0x00FF0000)>>8);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write data byte 3;*/
    temp = 0x82|MCI_REGISTER_DATA_BYTE3|((value&0xFF000000)>>16);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write address byte 0;*/
    temp = 0x82|MCI_REGISTER_ADDRESS_BYTE0|((address&0x000000FF)<<8);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write address byte 1;*/
    temp = 0x82|MCI_REGISTER_ADDRESS_BYTE1|(address&0x0000FF00);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*Write that the mode is write.*/
    temp = 0x82 | MCI_REGISTER_MODE | MCI_MODE_REGISTER_WRITE;
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    return waitForMciComplete(dev);
}

static int mc417_register_read(struct cx231xx *dev, u16 address, u32 *value)
{
    /*write address byte 0;*/
    u32 temp;
    u32 return_value = 0;
    int ret = 0;

    temp = 0x82 | MCI_REGISTER_ADDRESS_BYTE0 | ((address & 0x00FF) << 8);
    temp = temp << 10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp | ((0x05) << 10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write address byte 1;*/
    temp = 0x82 | MCI_REGISTER_ADDRESS_BYTE1 | (address & 0xFF00);
    temp = temp << 10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp | ((0x05) << 10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write that the mode is read;*/
    temp = 0x82 | MCI_REGISTER_MODE | MCI_MODE_REGISTER_READ;
    temp = temp << 10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp | ((0x05) << 10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*wait for the MIRDY line to be asserted ,
    signalling that the read is done;*/
    ret = waitForMciComplete(dev);

    /*switch the DATA- GPIO to input mode;*/

    /*Read data byte 0;*/
    temp = (0x82 | MCI_REGISTER_DATA_BYTE0) << 10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81 | MCI_REGISTER_DATA_BYTE0) << 10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp & 0x03FC0000) >> 18);
    setITVCReg(dev, ITVC_READ_DIR, (0x87 << 10));

    /* Read data byte 1;*/
    temp = (0x82 | MCI_REGISTER_DATA_BYTE1) << 10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81 | MCI_REGISTER_DATA_BYTE1) << 10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);

    return_value |= ((temp & 0x03FC0000) >> 10);
    setITVCReg(dev, ITVC_READ_DIR, (0x87 << 10));

    /*Read data byte 2;*/
    temp = (0x82 | MCI_REGISTER_DATA_BYTE2) << 10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81 | MCI_REGISTER_DATA_BYTE2) << 10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp & 0x03FC0000) >> 2);
    setITVCReg(dev, ITVC_READ_DIR, (0x87 << 10));

    /*Read data byte 3;*/
    temp = (0x82 | MCI_REGISTER_DATA_BYTE3) << 10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81 | MCI_REGISTER_DATA_BYTE3) << 10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp & 0x03FC0000) << 6);
    setITVCReg(dev, ITVC_READ_DIR, (0x87 << 10));

    *value  = return_value;


    return ret;
}

static int mc417_memory_write(struct cx231xx *dev, u32 address, u32 value)
{
    /*write data byte 0;*/

    u32 temp;
    int ret = 0;

    temp = 0x82 | MCI_MEMORY_DATA_BYTE0|((value & 0x000000FF) << 8);
    temp = temp << 10;
    ret = setITVCReg(dev, ITVC_WRITE_DIR, temp);
    if (ret < 0)
        return ret;
    temp = temp | ((0x05) << 10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write data byte 1;*/
    temp = 0x82 | MCI_MEMORY_DATA_BYTE1 | (value & 0x0000FF00);
    temp = temp << 10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp | ((0x05) << 10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write data byte 2;*/
    temp = 0x82|MCI_MEMORY_DATA_BYTE2|((value&0x00FF0000)>>8);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write data byte 3;*/
    temp = 0x82|MCI_MEMORY_DATA_BYTE3|((value&0xFF000000)>>16);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /* write address byte 2;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE2 | MCI_MODE_MEMORY_WRITE |
        ((address & 0x003F0000)>>8);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /* write address byte 1;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE1 | (address & 0xFF00);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /* write address byte 0;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE0|((address & 0x00FF)<<8);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*wait for MIRDY line;*/
    waitForMciComplete(dev);

    return 0;
}

static int mc417_memory_read(struct cx231xx *dev, u32 address, u32 *value)
{
    u32 temp = 0;
    u32 return_value = 0;
    int ret = 0;

    /*write address byte 2;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE2 | MCI_MODE_MEMORY_READ |
        ((address & 0x003F0000)>>8);
    temp = temp<<10;
    ret = setITVCReg(dev, ITVC_WRITE_DIR, temp);
    if (ret < 0)
        return ret;
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write address byte 1*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE1 | (address & 0xFF00);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*write address byte 0*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE0 | ((address & 0x00FF)<<8);
    temp = temp<<10;
    setITVCReg(dev, ITVC_WRITE_DIR, temp);
    temp = temp|((0x05)<<10);
    setITVCReg(dev, ITVC_WRITE_DIR, temp);

    /*Wait for MIRDY line*/
    ret = waitForMciComplete(dev);


    /*Read data byte 3;*/
    temp = (0x82|MCI_MEMORY_DATA_BYTE3)<<10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81|MCI_MEMORY_DATA_BYTE3)<<10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp&0x03FC0000)<<6);
    setITVCReg(dev, ITVC_READ_DIR, (0x87<<10));

    /*Read data byte 2;*/
    temp = (0x82|MCI_MEMORY_DATA_BYTE2)<<10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81|MCI_MEMORY_DATA_BYTE2)<<10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp&0x03FC0000)>>2);
    setITVCReg(dev, ITVC_READ_DIR, (0x87<<10));

    /* Read data byte 1;*/
    temp = (0x82|MCI_MEMORY_DATA_BYTE1)<<10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81|MCI_MEMORY_DATA_BYTE1)<<10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp&0x03FC0000)>>10);
    setITVCReg(dev, ITVC_READ_DIR, (0x87<<10));

    /*Read data byte 0;*/
    temp = (0x82|MCI_MEMORY_DATA_BYTE0)<<10;
    setITVCReg(dev, ITVC_READ_DIR, temp);
    temp = ((0x81|MCI_MEMORY_DATA_BYTE0)<<10);
    setITVCReg(dev, ITVC_READ_DIR, temp);
    getITVCReg(dev, ITVC_READ_DIR, &temp);
    return_value |= ((temp&0x03FC0000)>>18);
    setITVCReg(dev, ITVC_READ_DIR, (0x87<<10));

    *value  = return_value;
    return ret;
}

/* ------------------------------------------------------------------ */

/* MPEG encoder API */
static char *cmd_to_str(int cmd)
{
    switch (cmd) {
    case CX2341X_ENC_PING_FW:
        return  "PING_FW";
    case CX2341X_ENC_START_CAPTURE:
        return  "START_CAPTURE";
    case CX2341X_ENC_STOP_CAPTURE:
        return  "STOP_CAPTURE";
    case CX2341X_ENC_SET_AUDIO_ID:
        return  "SET_AUDIO_ID";
    case CX2341X_ENC_SET_VIDEO_ID:
        return  "SET_VIDEO_ID";
    case CX2341X_ENC_SET_PCR_ID:
        return  "SET_PCR_PID";
    case CX2341X_ENC_SET_FRAME_RATE:
        return  "SET_FRAME_RATE";
    case CX2341X_ENC_SET_FRAME_SIZE:
        return  "SET_FRAME_SIZE";
    case CX2341X_ENC_SET_BIT_RATE:
        return  "SET_BIT_RATE";
    case CX2341X_ENC_SET_GOP_PROPERTIES:
        return  "SET_GOP_PROPERTIES";
    case CX2341X_ENC_SET_ASPECT_RATIO:
        return  "SET_ASPECT_RATIO";
    case CX2341X_ENC_SET_DNR_FILTER_MODE:
        return  "SET_DNR_FILTER_PROPS";
    case CX2341X_ENC_SET_DNR_FILTER_PROPS:
        return  "SET_DNR_FILTER_PROPS";
    case CX2341X_ENC_SET_CORING_LEVELS:
        return  "SET_CORING_LEVELS";
    case CX2341X_ENC_SET_SPATIAL_FILTER_TYPE:
        return  "SET_SPATIAL_FILTER_TYPE";
    case CX2341X_ENC_SET_VBI_LINE:
        return  "SET_VBI_LINE";
    case CX2341X_ENC_SET_STREAM_TYPE:
        return  "SET_STREAM_TYPE";
    case CX2341X_ENC_SET_OUTPUT_PORT:
        return  "SET_OUTPUT_PORT";
    case CX2341X_ENC_SET_AUDIO_PROPERTIES:
        return  "SET_AUDIO_PROPERTIES";
    case CX2341X_ENC_HALT_FW:
        return  "HALT_FW";
    case CX2341X_ENC_GET_VERSION:
        return  "GET_VERSION";
    case CX2341X_ENC_SET_GOP_CLOSURE:
        return  "SET_GOP_CLOSURE";
    case CX2341X_ENC_GET_SEQ_END:
        return  "GET_SEQ_END";
    case CX2341X_ENC_SET_PGM_INDEX_INFO:
        return  "SET_PGM_INDEX_INFO";
    case CX2341X_ENC_SET_VBI_CONFIG:
        return  "SET_VBI_CONFIG";
    case CX2341X_ENC_SET_DMA_BLOCK_SIZE:
        return  "SET_DMA_BLOCK_SIZE";
    case CX2341X_ENC_GET_PREV_DMA_INFO_MB_10:
        return  "GET_PREV_DMA_INFO_MB_10";
    case CX2341X_ENC_GET_PREV_DMA_INFO_MB_9:
        return  "GET_PREV_DMA_INFO_MB_9";
    case CX2341X_ENC_SCHED_DMA_TO_HOST:
        return  "SCHED_DMA_TO_HOST";
    case CX2341X_ENC_INITIALIZE_INPUT:
        return  "INITIALIZE_INPUT";
    case CX2341X_ENC_SET_FRAME_DROP_RATE:
        return  "SET_FRAME_DROP_RATE";
    case CX2341X_ENC_PAUSE_ENCODER:
        return  "PAUSE_ENCODER";
    case CX2341X_ENC_REFRESH_INPUT:
        return  "REFRESH_INPUT";
    case CX2341X_ENC_SET_COPYRIGHT:
        return  "SET_COPYRIGHT";
    case CX2341X_ENC_SET_EVENT_NOTIFICATION:
        return  "SET_EVENT_NOTIFICATION";
    case CX2341X_ENC_SET_NUM_VSYNC_LINES:
        return  "SET_NUM_VSYNC_LINES";
    case CX2341X_ENC_SET_PLACEHOLDER:
        return  "SET_PLACEHOLDER";
    case CX2341X_ENC_MUTE_VIDEO:
        return  "MUTE_VIDEO";
    case CX2341X_ENC_MUTE_AUDIO:
        return  "MUTE_AUDIO";
    case CX2341X_ENC_MISC:
        return  "MISC";
    default:
        return "UNKNOWN";
    }
}

static int cx231xx_mbox_func(void *priv,
                 u32 command,
                 int in,
                 int out,
                 u32 data[CX2341X_MBOX_MAX_DATA])
{
    struct cx231xx *dev = priv;
    unsigned long timeout;
    u32 value, flag, retval = 0;
    int i;

    dprintk(3, "%s: command(0x%X) = %s\n", __func__, command,
        cmd_to_str(command));

    /* this may not be 100% safe if we can't read any memory location
       without side effects */
    mc417_memory_read(dev, dev->cx23417_mailbox - 4, &value);
    if (value != 0x12345678) {
        dprintk(3,
            "Firmware and/or mailbox pointer not initialized "
            "or corrupted, signature = 0x%x, cmd = %s\n", value,
            cmd_to_str(command));
        return -1;
    }

    /* This read looks at 32 bits, but flag is only 8 bits.
     * Seems we also bail if CMD or TIMEOUT bytes are set???
     */
    mc417_memory_read(dev, dev->cx23417_mailbox, &flag);
    if (flag) {
        dprintk(3, "ERROR: Mailbox appears to be in use "
            "(%x), cmd = %s\n", flag, cmd_to_str(command));
        return -1;
    }

    flag |= 1; /* tell 'em we're working on it */
    mc417_memory_write(dev, dev->cx23417_mailbox, flag);

    /* write command + args + fill remaining with zeros */
    /* command code */
    mc417_memory_write(dev, dev->cx23417_mailbox + 1, command);
    mc417_memory_write(dev, dev->cx23417_mailbox + 3,
        IVTV_API_STD_TIMEOUT); /* timeout */
    for (i = 0; i < in; i++) {
        mc417_memory_write(dev, dev->cx23417_mailbox + 4 + i, data[i]);
        dprintk(3, "API Input %d = %d\n", i, data[i]);
    }
    for (; i < CX2341X_MBOX_MAX_DATA; i++)
        mc417_memory_write(dev, dev->cx23417_mailbox + 4 + i, 0);

    flag |= 3; /* tell 'em we're done writing */
    mc417_memory_write(dev, dev->cx23417_mailbox, flag);

    /* wait for firmware to handle the API command */
    timeout = jiffies + msecs_to_jiffies(10);
    for (;;) {
        mc417_memory_read(dev, dev->cx23417_mailbox, &flag);
        if (0 != (flag & 4))
            break;
        if (time_after(jiffies, timeout)) {
            dprintk(3, "ERROR: API Mailbox timeout\n");
            return -1;
        }
        udelay(10);
    }

    /* read output values */
    for (i = 0; i < out; i++) {
        mc417_memory_read(dev, dev->cx23417_mailbox + 4 + i, data + i);
        dprintk(3, "API Output %d = %d\n", i, data[i]);
    }

    mc417_memory_read(dev, dev->cx23417_mailbox + 2, &retval);
    dprintk(3, "API result = %d\n", retval);

    flag = 0;
    mc417_memory_write(dev, dev->cx23417_mailbox, flag);

    return retval;
}

/* We don't need to call the API often, so using just one
 * mailbox will probably suffice
 */
static int cx231xx_api_cmd(struct cx231xx *dev,
               u32 command,
               u32 inputcnt,
               u32 outputcnt,
               ...)
{
    u32 data[CX2341X_MBOX_MAX_DATA];
    va_list vargs;
    int i, err;

    dprintk(3, "%s() cmds = 0x%08x\n", __func__, command);

    va_start(vargs, outputcnt);
    for (i = 0; i < inputcnt; i++)
        data[i] = va_arg(vargs, int);

    err = cx231xx_mbox_func(dev, command, inputcnt, outputcnt, data);
    for (i = 0; i < outputcnt; i++) {
        int *vptr = va_arg(vargs, int *);
        *vptr = data[i];
    }
    va_end(vargs);

    return err;
}

static int cx231xx_find_mailbox(struct cx231xx *dev)
{
    u32 signature[4] = {
        0x12345678, 0x34567812, 0x56781234, 0x78123456
    };
    int signaturecnt = 0;
    u32 value;
    int i;
    int ret = 0;

    dprintk(2, "%s()\n", __func__);

    for (i = 0; i < 0x100; i++) {/*CX231xx_FIRM_IMAGE_SIZE*/
        ret = mc417_memory_read(dev, i, &value);
        if (ret < 0)
            return ret;
        if (value == signature[signaturecnt])
            signaturecnt++;
        else
            signaturecnt = 0;
        if (4 == signaturecnt) {
            dprintk(1, "Mailbox signature found at 0x%x\n", i+1);
            return i+1;
        }
    }
    dprintk(3, "Mailbox signature values not found!\n");
    return -1;
}

static void mciWriteMemoryToGPIO(struct cx231xx *dev, u32 address, u32 value,
        u32 *p_fw_image)
{

    u32 temp = 0;
    int i = 0;

    temp = 0x82|MCI_MEMORY_DATA_BYTE0|((value&0x000000FF)<<8);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    /*write data byte 1;*/
    temp = 0x82|MCI_MEMORY_DATA_BYTE1|(value&0x0000FF00);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    /*write data byte 2;*/
    temp = 0x82|MCI_MEMORY_DATA_BYTE2|((value&0x00FF0000)>>8);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    /*write data byte 3;*/
    temp = 0x82|MCI_MEMORY_DATA_BYTE3|((value&0xFF000000)>>16);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    /* write address byte 2;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE2 | MCI_MODE_MEMORY_WRITE |
        ((address & 0x003F0000)>>8);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    /* write address byte 1;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE1 | (address & 0xFF00);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    /* write address byte 0;*/
    temp = 0x82|MCI_MEMORY_ADDRESS_BYTE0|((address & 0x00FF)<<8);
    temp = temp<<10;
    *p_fw_image = temp;
    p_fw_image++;
    temp = temp|((0x05)<<10);
    *p_fw_image = temp;
    p_fw_image++;

    for (i = 0; i < 6; i++) {
        *p_fw_image = 0xFFFFFFFF;
        p_fw_image++;
    }
}


static int cx231xx_load_firmware(struct cx231xx *dev)
{
    static const unsigned char magic[8] = {
        0xa7, 0x0d, 0x00, 0x00, 0x66, 0xbb, 0x55, 0xaa
    };
    const struct firmware *firmware;
    int i, retval = 0;
    u32 value = 0;
    u32 gpio_output = 0;
    /*u32 checksum = 0;*/
    /*u32 *dataptr;*/
    u32 transfer_size = 0;
    u32 fw_data = 0;
    u32 address = 0;
    /*u32 current_fw[800];*/
    u32 *p_current_fw, *p_fw;
    u32 *p_fw_data;
    int frame = 0;
    u16 _buffer_size = 4096;
    u8 *p_buffer;

    p_current_fw = vmalloc(1884180 * 4);
    p_fw = p_current_fw;
    if (p_current_fw == NULL) {
        dprintk(2, "FAIL!!!\n");
        return -1;
    }

    p_buffer = vmalloc(4096);
    if (p_buffer == NULL) {
        dprintk(2, "FAIL!!!\n");
        return -1;
    }

    dprintk(2, "%s()\n", __func__);

    /* Save GPIO settings before reset of APU */
    retval |= mc417_memory_read(dev, 0x9020, &gpio_output);
    retval |= mc417_memory_read(dev, 0x900C, &value);

    retval  = mc417_register_write(dev,
        IVTV_REG_VPU, 0xFFFFFFED);
    retval |= mc417_register_write(dev,
        IVTV_REG_HW_BLOCKS, IVTV_CMD_HW_BLOCKS_RST);
    retval |= mc417_register_write(dev,
        IVTV_REG_ENC_SDRAM_REFRESH, 0x80000800);
    retval |= mc417_register_write(dev,
        IVTV_REG_ENC_SDRAM_PRECHARGE, 0x1A);
    retval |= mc417_register_write(dev,
        IVTV_REG_APU, 0);

    if (retval != 0) {
        printk(KERN_ERR "%s: Error with mc417_register_write\n",
            __func__);
        return -1;
    }

    retval = request_firmware(&firmware, CX231xx_FIRM_IMAGE_NAME,
                  &dev->udev->dev);

    if (retval != 0) {
        printk(KERN_ERR
            "ERROR: Hotplug firmware request failed (%s).\n",
            CX231xx_FIRM_IMAGE_NAME);
        printk(KERN_ERR "Please fix your hotplug setup, the board will "
            "not work without firmware loaded!\n");
        return -1;
    }

    if (firmware->size != CX231xx_FIRM_IMAGE_SIZE) {
        printk(KERN_ERR "ERROR: Firmware size mismatch "
            "(have %zd, expected %d)\n",
            firmware->size, CX231xx_FIRM_IMAGE_SIZE);
        release_firmware(firmware);
        return -1;
    }

    if (0 != memcmp(firmware->data, magic, 8)) {
        printk(KERN_ERR
            "ERROR: Firmware magic mismatch, wrong file?\n");
        release_firmware(firmware);
        return -1;
    }

    initGPIO(dev);

    /* transfer to the chip */
    dprintk(2, "Loading firmware to GPIO...\n");
    p_fw_data = (u32 *)firmware->data;
    dprintk(2, "firmware->size=%zd\n", firmware->size);
    for (transfer_size = 0; transfer_size < firmware->size;
         transfer_size += 4) {
        fw_data = *p_fw_data;

         mciWriteMemoryToGPIO(dev, address, fw_data, p_current_fw);
        address = address + 1;
        p_current_fw += 20;
        p_fw_data += 1;
    }

    /*download the firmware by ep5-out*/

    for (frame = 0; frame < (int)(CX231xx_FIRM_IMAGE_SIZE*20/_buffer_size);
         frame++) {
        for (i = 0; i < _buffer_size; i++) {
            *(p_buffer + i) = (u8)(*(p_fw + (frame * 128 * 8 + (i / 4))) & 0x000000FF);
            i++;
            *(p_buffer + i) = (u8)((*(p_fw + (frame * 128 * 8 + (i / 4))) & 0x0000FF00) >> 8);
            i++;
            *(p_buffer + i) = (u8)((*(p_fw + (frame * 128 * 8 + (i / 4))) & 0x00FF0000) >> 16);
            i++;
            *(p_buffer + i) = (u8)((*(p_fw + (frame * 128 * 8 + (i / 4))) & 0xFF000000) >> 24);
        }
        cx231xx_ep5_bulkout(dev, p_buffer, _buffer_size);
    }

    p_current_fw = p_fw;
    vfree(p_current_fw);
    p_current_fw = NULL;
    uninitGPIO(dev);
    release_firmware(firmware);
    dprintk(1, "Firmware upload successful.\n");

    retval |= mc417_register_write(dev, IVTV_REG_HW_BLOCKS,
        IVTV_CMD_HW_BLOCKS_RST);
    if (retval < 0) {
        printk(KERN_ERR "%s: Error with mc417_register_write\n",
            __func__);
        return retval;
    }
    /* F/W power up disturbs the GPIOs, restore state */
    retval |= mc417_register_write(dev, 0x9020, gpio_output);
    retval |= mc417_register_write(dev, 0x900C, value);

    retval |= mc417_register_read(dev, IVTV_REG_VPU, &value);
    retval |= mc417_register_write(dev, IVTV_REG_VPU, value & 0xFFFFFFE8);

    if (retval < 0) {
        printk(KERN_ERR "%s: Error with mc417_register_write\n",
            __func__);
        return retval;
    }
    return 0;
}

static void cx231xx_417_check_encoder(struct cx231xx *dev)
{
    u32 status, seq;

    status = 0;
    seq = 0;
    cx231xx_api_cmd(dev, CX2341X_ENC_GET_SEQ_END, 0, 2, &status, &seq);
    dprintk(1, "%s() status = %d, seq = %d\n", __func__, status, seq);
}

static void cx231xx_codec_settings(struct cx231xx *dev)
{
    dprintk(1, "%s()\n", __func__);

    /* assign frame size */
    cx231xx_api_cmd(dev, CX2341X_ENC_SET_FRAME_SIZE, 2, 0,
                dev->ts1.height, dev->ts1.width);

    dev->mpeg_params.width = dev->ts1.width;
    dev->mpeg_params.height = dev->ts1.height;

    cx2341x_update(dev, cx231xx_mbox_func, NULL, &dev->mpeg_params);

    cx231xx_api_cmd(dev, CX2341X_ENC_MISC, 2, 0, 3, 1);
    cx231xx_api_cmd(dev, CX2341X_ENC_MISC, 2, 0, 4, 1);
}

static int cx231xx_initialize_codec(struct cx231xx *dev)
{
    int version;
    int retval;
    u32 i;
    u32 val = 0;

    dprintk(1, "%s()\n", __func__);
    cx231xx_disable656(dev);
    retval = cx231xx_api_cmd(dev, CX2341X_ENC_PING_FW, 0, 0); /* ping */
    if (retval < 0) {
        dprintk(2, "%s() PING OK\n", __func__);
        retval = cx231xx_load_firmware(dev);
        if (retval < 0) {
            printk(KERN_ERR "%s() f/w load failed\n", __func__);
            return retval;
        }
        retval = cx231xx_find_mailbox(dev);
        if (retval < 0) {
            printk(KERN_ERR "%s() mailbox < 0, error\n",
                __func__);
            return -1;
        }
        dev->cx23417_mailbox = retval;
        retval = cx231xx_api_cmd(dev, CX2341X_ENC_PING_FW, 0, 0);
        if (retval < 0) {
            printk(KERN_ERR
                "ERROR: cx23417 firmware ping failed!\n");
            return -1;
        }
        retval = cx231xx_api_cmd(dev, CX2341X_ENC_GET_VERSION, 0, 1,
            &version);
        if (retval < 0) {
            printk(KERN_ERR "ERROR: cx23417 firmware get encoder :"
                "version failed!\n");
            return -1;
        }
        dprintk(1, "cx23417 firmware version is 0x%08x\n", version);
        msleep(200);
    }

    for (i = 0; i < 1; i++) {
        retval = mc417_register_read(dev, 0x20f8, &val);
        dprintk(3, "***before enable656() VIM Capture Lines =%d ***\n",
                 val);
        if (retval < 0)
            return retval;
    }

    cx231xx_enable656(dev);
            /* stop mpeg capture */
            cx231xx_api_cmd(dev, CX2341X_ENC_STOP_CAPTURE,
                 3, 0, 1, 3, 4);

    cx231xx_codec_settings(dev);
    msleep(60);

/*  cx231xx_api_cmd(dev, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, 0,
        CX231xx_FIELD1_SAA7115, CX231xx_FIELD2_SAA7115);
    cx231xx_api_cmd(dev, CX2341X_ENC_SET_PLACEHOLDER, 12, 0,
        CX231xx_CUSTOM_EXTENSION_USR_DATA, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0);
*/

#if 0
    /* TODO */
    u32 data[7];

    /* Setup to capture VBI */
    data[0] = 0x0001BD00;
    data[1] = 1;          /* frames per interrupt */
    data[2] = 4;          /* total bufs */
    data[3] = 0x91559155; /* start codes */
    data[4] = 0x206080C0; /* stop codes */
    data[5] = 6;          /* lines */
    data[6] = 64;         /* BPL */

    cx231xx_api_cmd(dev, CX2341X_ENC_SET_VBI_CONFIG, 7, 0, data[0], data[1],
        data[2], data[3], data[4], data[5], data[6]);

    for (i = 2; i <= 24; i++) {
        int valid;

        valid = ((i >= 19) && (i <= 21));
        cx231xx_api_cmd(dev, CX2341X_ENC_SET_VBI_LINE, 5, 0, i,
                valid, 0 , 0, 0);
        cx231xx_api_cmd(dev, CX2341X_ENC_SET_VBI_LINE, 5, 0,
                i | 0x80000000, valid, 0, 0, 0);
    }
#endif
/*  cx231xx_api_cmd(dev, CX2341X_ENC_MUTE_AUDIO, 1, 0, CX231xx_UNMUTE);
    msleep(60);
*/
    /* initialize the video input */
    retval = cx231xx_api_cmd(dev, CX2341X_ENC_INITIALIZE_INPUT, 0, 0);
    if (retval < 0)
        return retval;
    msleep(60);

    /* Enable VIP style pixel invalidation so we work with scaled mode */
    mc417_memory_write(dev, 2120, 0x00000080);

    /* start capturing to the host interface */
    retval = cx231xx_api_cmd(dev, CX2341X_ENC_START_CAPTURE, 2, 0,
        CX231xx_MPEG_CAPTURE, CX231xx_RAW_BITS_NONE);
    if (retval < 0)
        return retval;
    msleep(10);

    for (i = 0; i < 1; i++) {
        mc417_register_read(dev, 0x20f8, &val);
    dprintk(3, "***VIM Capture Lines =%d ***\n", val);
    }

    return 0;
}

/* ------------------------------------------------------------------ */

static int bb_buf_setup(struct videobuf_queue *q,
    unsigned int *count, unsigned int *size)
{
    struct cx231xx_fh *fh = q->priv_data;

    fh->dev->ts1.ts_packet_size  = mpeglinesize;
    fh->dev->ts1.ts_packet_count = mpeglines;

    *size = fh->dev->ts1.ts_packet_size * fh->dev->ts1.ts_packet_count;
    *count = mpegbufs;

    return 0;
}
static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
{
    struct cx231xx_fh *fh = vq->priv_data;
    struct cx231xx *dev = fh->dev;
    unsigned long flags = 0;

    if (in_interrupt())
        BUG();

    spin_lock_irqsave(&dev->video_mode.slock, flags);
    if (dev->USE_ISO) {
        if (dev->video_mode.isoc_ctl.buf == buf)
            dev->video_mode.isoc_ctl.buf = NULL;
    } else {
        if (dev->video_mode.bulk_ctl.buf == buf)
            dev->video_mode.bulk_ctl.buf = NULL;
    }
    spin_unlock_irqrestore(&dev->video_mode.slock, flags);
    videobuf_waiton(vq, &buf->vb, 0, 0);
    videobuf_vmalloc_free(&buf->vb);
    buf->vb.state = VIDEOBUF_NEEDS_INIT;
}

static void buffer_copy(struct cx231xx *dev, char *data, int len, struct urb *urb,
        struct cx231xx_dmaqueue *dma_q)
{
        void *vbuf;
        struct cx231xx_buffer *buf;
        u32 tail_data = 0;
        char *p_data;

        if (dma_q->mpeg_buffer_done == 0) {
            if (list_empty(&dma_q->active))
                return;

            buf = list_entry(dma_q->active.next,
                    struct cx231xx_buffer, vb.queue);
            dev->video_mode.isoc_ctl.buf = buf;
            dma_q->mpeg_buffer_done = 1;
        }
        /* Fill buffer */
        buf = dev->video_mode.isoc_ctl.buf;
        vbuf = videobuf_to_vmalloc(&buf->vb);

        if ((dma_q->mpeg_buffer_completed+len) <
           mpeglines*mpeglinesize) {
            if (dma_q->add_ps_package_head ==
               CX231XX_NEED_ADD_PS_PACKAGE_HEAD) {
                memcpy(vbuf+dma_q->mpeg_buffer_completed,
                       dma_q->ps_head, 3);
                dma_q->mpeg_buffer_completed =
                  dma_q->mpeg_buffer_completed + 3;
                dma_q->add_ps_package_head =
                  CX231XX_NONEED_PS_PACKAGE_HEAD;
            }
            memcpy(vbuf+dma_q->mpeg_buffer_completed, data, len);
            dma_q->mpeg_buffer_completed =
              dma_q->mpeg_buffer_completed + len;
        } else {
            dma_q->mpeg_buffer_done = 0;

            tail_data =
              mpeglines*mpeglinesize - dma_q->mpeg_buffer_completed;
            memcpy(vbuf+dma_q->mpeg_buffer_completed,
                   data, tail_data);

            buf->vb.state = VIDEOBUF_DONE;
            buf->vb.field_count++;
            do_gettimeofday(&buf->vb.ts);
            list_del(&buf->vb.queue);
            wake_up(&buf->vb.done);
            dma_q->mpeg_buffer_completed = 0;

            if (len - tail_data > 0) {
                p_data = data + tail_data;
                dma_q->left_data_count = len - tail_data;
                memcpy(dma_q->p_left_data,
                       p_data, len - tail_data);
            }

        }

        return;
}

static void buffer_filled(char *data, int len, struct urb *urb,
        struct cx231xx_dmaqueue *dma_q)
{
        void *vbuf;
        struct cx231xx_buffer *buf;

        if (list_empty(&dma_q->active))
            return;


        buf = list_entry(dma_q->active.next,
                 struct cx231xx_buffer, vb.queue);


        /* Fill buffer */
        vbuf = videobuf_to_vmalloc(&buf->vb);
        memcpy(vbuf, data, len);
        buf->vb.state = VIDEOBUF_DONE;
        buf->vb.field_count++;
        do_gettimeofday(&buf->vb.ts);
        list_del(&buf->vb.queue);
        wake_up(&buf->vb.done);

        return;
}
static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
{
    struct cx231xx_dmaqueue *dma_q = urb->context;
    unsigned char *p_buffer;
    u32 buffer_size = 0;
    u32 i = 0;

    for (i = 0; i < urb->number_of_packets; i++) {
        if (dma_q->left_data_count > 0) {
            buffer_copy(dev, dma_q->p_left_data,
                    dma_q->left_data_count, urb, dma_q);
            dma_q->mpeg_buffer_completed = dma_q->left_data_count;
            dma_q->left_data_count = 0;
        }

        p_buffer = urb->transfer_buffer +
                urb->iso_frame_desc[i].offset;
        buffer_size = urb->iso_frame_desc[i].actual_length;

        if (buffer_size > 0)
            buffer_copy(dev, p_buffer, buffer_size, urb, dma_q);
    }

    return 0;
}
static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
{

    /*char *outp;*/
    /*struct cx231xx_buffer *buf;*/
    struct cx231xx_dmaqueue *dma_q = urb->context;
    unsigned char *p_buffer, *buffer;
    u32 buffer_size = 0;

    p_buffer = urb->transfer_buffer;
    buffer_size = urb->actual_length;

    buffer = kmalloc(buffer_size, GFP_ATOMIC);

    memcpy(buffer, dma_q->ps_head, 3);
    memcpy(buffer+3, p_buffer, buffer_size-3);
    memcpy(dma_q->ps_head, p_buffer+buffer_size-3, 3);

    p_buffer = buffer;
    buffer_filled(p_buffer, buffer_size, urb, dma_q);

    kfree(buffer);
    return 0;
}

static int bb_buf_prepare(struct videobuf_queue *q,
    struct videobuf_buffer *vb, enum v4l2_field field)
{
    struct cx231xx_fh *fh = q->priv_data;
    struct cx231xx_buffer *buf =
        container_of(vb, struct cx231xx_buffer, vb);
    struct cx231xx *dev = fh->dev;
    int rc = 0, urb_init = 0;
    int size = fh->dev->ts1.ts_packet_size * fh->dev->ts1.ts_packet_count;

    dma_qq = &dev->video_mode.vidq;

    if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
        return -EINVAL;
    buf->vb.width = fh->dev->ts1.ts_packet_size;
    buf->vb.height = fh->dev->ts1.ts_packet_count;
    buf->vb.size = size;
    buf->vb.field = field;

    if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
        rc = videobuf_iolock(q, &buf->vb, NULL);
        if (rc < 0)
            goto fail;
    }

    if (dev->USE_ISO) {
        if (!dev->video_mode.isoc_ctl.num_bufs)
            urb_init = 1;
    } else {
        if (!dev->video_mode.bulk_ctl.num_bufs)
            urb_init = 1;
    }
    /*cx231xx_info("urb_init=%d dev->video_mode.max_pkt_size=%d\n",
        urb_init, dev->video_mode.max_pkt_size);*/
    dev->mode_tv = 1;

    if (urb_init) {
        rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
        rc = cx231xx_unmute_audio(dev);
        if (dev->USE_ISO) {
            cx231xx_set_alt_setting(dev, INDEX_TS1, 4);
            rc = cx231xx_init_isoc(dev, mpeglines,
                       mpegbufs,
                       dev->ts1_mode.max_pkt_size,
                       cx231xx_isoc_copy);
        } else {
            cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
            rc = cx231xx_init_bulk(dev, mpeglines,
                       mpegbufs,
                       dev->ts1_mode.max_pkt_size,
                       cx231xx_bulk_copy);
        }
        if (rc < 0)
            goto fail;
    }

    buf->vb.state = VIDEOBUF_PREPARED;
    return 0;

fail:
    free_buffer(q, buf);
    return rc;
}

static void bb_buf_queue(struct videobuf_queue *q,
    struct videobuf_buffer *vb)
{
    struct cx231xx_fh *fh = q->priv_data;

    struct cx231xx_buffer *buf =
        container_of(vb, struct cx231xx_buffer, vb);
    struct cx231xx *dev = fh->dev;
    struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;

    buf->vb.state = VIDEOBUF_QUEUED;
    list_add_tail(&buf->vb.queue, &vidq->active);

}

static void bb_buf_release(struct videobuf_queue *q,
    struct videobuf_buffer *vb)
{
    struct cx231xx_buffer *buf =
        container_of(vb, struct cx231xx_buffer, vb);
    /*struct cx231xx_fh *fh = q->priv_data;*/
    /*struct cx231xx *dev = (struct cx231xx *)fh->dev;*/

    free_buffer(q, buf);
}

static struct videobuf_queue_ops cx231xx_qops = {
    .buf_setup    = bb_buf_setup,
    .buf_prepare  = bb_buf_prepare,
    .buf_queue    = bb_buf_queue,
    .buf_release  = bb_buf_release,
};

/* ------------------------------------------------------------------ */

static const u32 *ctrl_classes[] = {
    cx2341x_mpeg_ctrls,
    NULL
};

static int cx231xx_queryctrl(struct cx231xx *dev,
    struct v4l2_queryctrl *qctrl)
{
    qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
    if (qctrl->id == 0)
        return -EINVAL;

    /* MPEG V4L2 controls */
    if (cx2341x_ctrl_query(&dev->mpeg_params, qctrl))
        qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;

    return 0;
}

static int cx231xx_querymenu(struct cx231xx *dev,
    struct v4l2_querymenu *qmenu)
{
    struct v4l2_queryctrl qctrl;

    qctrl.id = qmenu->id;
    cx231xx_queryctrl(dev, &qctrl);
    return v4l2_ctrl_query_menu(qmenu, &qctrl,
        cx2341x_ctrl_get_menu(&dev->mpeg_params, qmenu->id));
}

static int vidioc_g_std(struct file *file, void *fh0, v4l2_std_id *norm)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;

    *norm = dev->encodernorm.id;
    return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(cx231xx_tvnorms); i++)
        if (*id & cx231xx_tvnorms[i].id)
            break;
    if (i == ARRAY_SIZE(cx231xx_tvnorms))
        return -EINVAL;
    dev->encodernorm = cx231xx_tvnorms[i];

    if (dev->encodernorm.id & 0xb000) {
        dprintk(3, "encodernorm set to NTSC\n");
        dev->norm = V4L2_STD_NTSC;
        dev->ts1.height = 480;
        dev->mpeg_params.is_50hz = 0;
    } else {
        dprintk(3, "encodernorm set to PAL\n");
        dev->norm = V4L2_STD_PAL_B;
        dev->ts1.height = 576;
        dev->mpeg_params.is_50hz = 1;
    }
    call_all(dev, core, s_std, dev->norm);
    /* do mode control overrides */
    cx231xx_do_mode_ctrl_overrides(dev);

    dprintk(3, "exit vidioc_s_std() i=0x%x\n", i);
    return 0;
}
static int vidioc_g_audio(struct file *file, void *fh,
                    struct v4l2_audio *a)
{
        struct v4l2_audio *vin = a;

        int ret = -EINVAL;
        if (vin->index > 0)
            return ret;
        strncpy(vin->name, "VideoGrabber Audio", 14);
        vin->capability = V4L2_AUDCAP_STEREO;
return 0;
}
static int vidioc_enumaudio(struct file *file, void *fh,
                    struct v4l2_audio *a)
{
        struct v4l2_audio *vin = a;

        int ret = -EINVAL;

        if (vin->index > 0)
            return ret;
        strncpy(vin->name, "VideoGrabber Audio", 14);
        vin->capability = V4L2_AUDCAP_STEREO;


return 0;
}
static const char *iname[] = {
    [CX231XX_VMUX_COMPOSITE1] = "Composite1",
    [CX231XX_VMUX_SVIDEO]     = "S-Video",
    [CX231XX_VMUX_TELEVISION] = "Television",
    [CX231XX_VMUX_CABLE]      = "Cable TV",
    [CX231XX_VMUX_DVB]        = "DVB",
    [CX231XX_VMUX_DEBUG]      = "for debug only",
};
static int vidioc_enum_input(struct file *file, void *priv,
                struct v4l2_input *i)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;
    struct cx231xx_input *input;
    int n;
    dprintk(3, "enter vidioc_enum_input()i->index=%d\n", i->index);

    if (i->index >= 4)
        return -EINVAL;


    input = &cx231xx_boards[dev->model].input[i->index];

    if (input->type == 0)
        return -EINVAL;

    /* FIXME
     * strcpy(i->name, input->name); */

    n = i->index;
    strcpy(i->name, iname[INPUT(n)->type]);

    if (input->type == CX231XX_VMUX_TELEVISION ||
        input->type == CX231XX_VMUX_CABLE)
        i->type = V4L2_INPUT_TYPE_TUNER;
    else
        i->type  = V4L2_INPUT_TYPE_CAMERA;


    return 0;
}

static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
    *i = 0;
    return  0;
}

static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;

    dprintk(3, "enter vidioc_s_input() i=%d\n", i);

    mutex_lock(&dev->lock);

    video_mux(dev, i);

    mutex_unlock(&dev->lock);

    if (i >= 4)
        return -EINVAL;
    dev->input = i;
    dprintk(3, "exit vidioc_s_input()\n");
    return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
                struct v4l2_tuner *t)
{
    return 0;
}

static int vidioc_s_tuner(struct file *file, void *priv,
                struct v4l2_tuner *t)
{
    return 0;
}

static int vidioc_g_frequency(struct file *file, void *priv,
                struct v4l2_frequency *f)
{
    return 0;
}

static int vidioc_s_frequency(struct file *file, void *priv,
                struct v4l2_frequency *f)
{


    return 0;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
                struct v4l2_control *ctl)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_s_ctrl()\n");
    /* Update the A/V core */
    call_all(dev, core, s_ctrl, ctl);
    dprintk(3, "exit vidioc_s_ctrl()\n");
    return 0;
}
static struct v4l2_capability pvr_capability = {
    .driver         = "cx231xx",
    .card           = "VideoGrabber",
    .bus_info       = "usb",
    .version        = 1,
    .capabilities   = (V4L2_CAP_VIDEO_CAPTURE |
               V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
             V4L2_CAP_STREAMING | V4L2_CAP_READWRITE),
};
static int vidioc_querycap(struct file *file, void  *priv,
                struct v4l2_capability *cap)
{



        memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability));
    return 0;
}

static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
                    struct v4l2_fmtdesc *f)
{

    if (f->index != 0)
        return -EINVAL;

    strlcpy(f->description, "MPEG", sizeof(f->description));
    f->pixelformat = V4L2_PIX_FMT_MPEG;

    return 0;
}

static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
                struct v4l2_format *f)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_g_fmt_vid_cap()\n");
    f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
    f->fmt.pix.bytesperline = 0;
    f->fmt.pix.sizeimage    =
        dev->ts1.ts_packet_size * dev->ts1.ts_packet_count;
    f->fmt.pix.colorspace   = 0;
    f->fmt.pix.width        = dev->ts1.width;
    f->fmt.pix.height       = dev->ts1.height;
    f->fmt.pix.field        = fh->vidq.field;
    dprintk(1, "VIDIOC_G_FMT: w: %d, h: %d, f: %d\n",
        dev->ts1.width, dev->ts1.height, fh->vidq.field);
    dprintk(3, "exit vidioc_g_fmt_vid_cap()\n");
    return 0;
}

static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
                struct v4l2_format *f)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_try_fmt_vid_cap()\n");
    f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
    f->fmt.pix.bytesperline = 0;
    f->fmt.pix.sizeimage    =
        dev->ts1.ts_packet_size * dev->ts1.ts_packet_count;
    f->fmt.pix.colorspace   = 0;
    dprintk(1, "VIDIOC_TRY_FMT: w: %d, h: %d, f: %d\n",
        dev->ts1.width, dev->ts1.height, fh->vidq.field);
    dprintk(3, "exit vidioc_try_fmt_vid_cap()\n");
    return 0;
}

static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
                struct v4l2_format *f)
{

    return 0;
}

static int vidioc_reqbufs(struct file *file, void *priv,
                struct v4l2_requestbuffers *p)
{
    struct cx231xx_fh  *fh  = file->private_data;

    return videobuf_reqbufs(&fh->vidq, p);
}

static int vidioc_querybuf(struct file *file, void *priv,
                struct v4l2_buffer *p)
{
    struct cx231xx_fh  *fh  = file->private_data;

    return videobuf_querybuf(&fh->vidq, p);
}

static int vidioc_qbuf(struct file *file, void *priv,
                struct v4l2_buffer *p)
{
    struct cx231xx_fh  *fh  = file->private_data;

    return videobuf_qbuf(&fh->vidq, p);
}

static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
    struct cx231xx_fh  *fh  = priv;

    return videobuf_dqbuf(&fh->vidq, b, file->f_flags & O_NONBLOCK);
}


static int vidioc_streamon(struct file *file, void *priv,
                enum v4l2_buf_type i)
{
    struct cx231xx_fh  *fh  = file->private_data;

    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_streamon()\n");
        cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
        cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
        if (dev->USE_ISO)
            cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
                       CX231XX_NUM_BUFS,
                       dev->video_mode.max_pkt_size,
                       cx231xx_isoc_copy);
        else {
            cx231xx_init_bulk(dev, 320,
                       5,
                       dev->ts1_mode.max_pkt_size,
                       cx231xx_bulk_copy);
        }
    dprintk(3, "exit vidioc_streamon()\n");
    return videobuf_streamon(&fh->vidq);
}

static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
    struct cx231xx_fh  *fh  = file->private_data;

    return videobuf_streamoff(&fh->vidq);
}

static int vidioc_g_ext_ctrls(struct file *file, void *priv,
                struct v4l2_ext_controls *f)
{
    struct cx231xx_fh  *fh  = priv;
    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_g_ext_ctrls()\n");
    if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
        return -EINVAL;
    dprintk(3, "exit vidioc_g_ext_ctrls()\n");
    return cx2341x_ext_ctrls(&dev->mpeg_params, 0, f, VIDIOC_G_EXT_CTRLS);
}

static int vidioc_s_ext_ctrls(struct file *file, void *priv,
                struct v4l2_ext_controls *f)
{
    struct cx231xx_fh  *fh  = priv;
    struct cx231xx *dev = fh->dev;
    struct cx2341x_mpeg_params p;
    int err;
    dprintk(3, "enter vidioc_s_ext_ctrls()\n");
    if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
        return -EINVAL;

    p = dev->mpeg_params;
    err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
    if (err == 0) {
        err = cx2341x_update(dev, cx231xx_mbox_func,
            &dev->mpeg_params, &p);
        dev->mpeg_params = p;
    }

    return err;


return 0;
}

static int vidioc_try_ext_ctrls(struct file *file, void *priv,
                struct v4l2_ext_controls *f)
{
    struct cx231xx_fh  *fh  = priv;
    struct cx231xx *dev = fh->dev;
    struct cx2341x_mpeg_params p;
    int err;
    dprintk(3, "enter vidioc_try_ext_ctrls()\n");
    if (f->ctrl_class != V4L2_CTRL_CLASS_MPEG)
        return -EINVAL;

    p = dev->mpeg_params;
    err = cx2341x_ext_ctrls(&p, 0, f, VIDIOC_TRY_EXT_CTRLS);
    dprintk(3, "exit vidioc_try_ext_ctrls() err=%d\n", err);
    return err;
}

static int vidioc_log_status(struct file *file, void *priv)
{
    struct cx231xx_fh  *fh  = priv;
    struct cx231xx *dev = fh->dev;
    char name[32 + 2];

    snprintf(name, sizeof(name), "%s/2", dev->name);
    dprintk(3,
        "%s/2: ============  START LOG STATUS  ============\n",
           dev->name);
    call_all(dev, core, log_status);
    cx2341x_log_status(&dev->mpeg_params, name);
    dprintk(3,
        "%s/2: =============  END LOG STATUS  =============\n",
           dev->name);
    return 0;
}

static int vidioc_querymenu(struct file *file, void *priv,
                struct v4l2_querymenu *a)
{
    struct cx231xx_fh  *fh  = priv;
    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_querymenu()\n");
    dprintk(3, "exit vidioc_querymenu()\n");
    return cx231xx_querymenu(dev, a);
}

static int vidioc_queryctrl(struct file *file, void *priv,
                struct v4l2_queryctrl *c)
{
    struct cx231xx_fh  *fh  = priv;
    struct cx231xx *dev = fh->dev;
    dprintk(3, "enter vidioc_queryctrl()\n");
    dprintk(3, "exit vidioc_queryctrl()\n");
    return cx231xx_queryctrl(dev, c);
}

static int mpeg_open(struct file *file)
{
    int minor = video_devdata(file)->minor;
    struct cx231xx *h, *dev = NULL;
    /*struct list_head *list;*/
    struct cx231xx_fh *fh;
    /*u32 value = 0;*/

    dprintk(2, "%s()\n", __func__);

    list_for_each_entry(h, &cx231xx_devlist, devlist) {
        if (h->v4l_device->minor == minor)
            dev = h;
    }

    if (dev == NULL)
        return -ENODEV;

    mutex_lock(&dev->lock);

    /* allocate + initialize per filehandle data */
    fh = kzalloc(sizeof(*fh), GFP_KERNEL);
    if (NULL == fh) {
        mutex_unlock(&dev->lock);
        return -ENOMEM;
    }

    file->private_data = fh;
    fh->dev      = dev;


    videobuf_queue_vmalloc_init(&fh->vidq, &cx231xx_qops,
                NULL, &dev->video_mode.slock,
                V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_INTERLACED,
                sizeof(struct cx231xx_buffer), fh, NULL);
/*
    videobuf_queue_sg_init(&fh->vidq, &cx231xx_qops,
                &dev->udev->dev, &dev->ts1.slock,
                V4L2_BUF_TYPE_VIDEO_CAPTURE,
                V4L2_FIELD_INTERLACED,
                sizeof(struct cx231xx_buffer),
                fh, NULL);
*/


    cx231xx_set_alt_setting(dev, INDEX_VANC, 1);
    cx231xx_set_gpio_value(dev, 2, 0);

    cx231xx_initialize_codec(dev);

    mutex_unlock(&dev->lock);
    cx231xx_start_TS1(dev);

    return 0;
}

static int mpeg_release(struct file *file)
{
    struct cx231xx_fh  *fh  = file->private_data;
    struct cx231xx *dev = fh->dev;

    dprintk(3, "mpeg_release()! dev=0x%p\n", dev);

    if (!dev) {
        dprintk(3, "abort!!!\n");
        return 0;
    }

    mutex_lock(&dev->lock);

    cx231xx_stop_TS1(dev);

        /* do this before setting alternate! */
        if (dev->USE_ISO)
            cx231xx_uninit_isoc(dev);
        else
            cx231xx_uninit_bulk(dev);
        cx231xx_set_mode(dev, CX231XX_SUSPEND);

        cx231xx_api_cmd(fh->dev, CX2341X_ENC_STOP_CAPTURE, 3, 0,
                CX231xx_END_NOW, CX231xx_MPEG_CAPTURE,
                CX231xx_RAW_BITS_NONE);

    /* FIXME: Review this crap */
    /* Shut device down on last close */
    if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) {
        if (atomic_dec_return(&dev->v4l_reader_count) == 0) {
            /* stop mpeg capture */

            msleep(500);
            cx231xx_417_check_encoder(dev);

        }
    }

    if (fh->vidq.streaming)
        videobuf_streamoff(&fh->vidq);
    if (fh->vidq.reading)
        videobuf_read_stop(&fh->vidq);

    videobuf_mmap_free(&fh->vidq);
    file->private_data = NULL;
    kfree(fh);
    mutex_unlock(&dev->lock);
    return 0;
}

static ssize_t mpeg_read(struct file *file, char __user *data,
    size_t count, loff_t *ppos)
{
    struct cx231xx_fh *fh = file->private_data;
    struct cx231xx *dev = fh->dev;


    /* Deal w/ A/V decoder * and mpeg encoder sync issues. */
    /* Start mpeg encoder on first read. */
    if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
        if (atomic_inc_return(&dev->v4l_reader_count) == 1) {
            if (cx231xx_initialize_codec(dev) < 0)
                return -EINVAL;
        }
    }

    return videobuf_read_stream(&fh->vidq, data, count, ppos, 0,
                    file->f_flags & O_NONBLOCK);
}

static unsigned int mpeg_poll(struct file *file,
    struct poll_table_struct *wait)
{
    struct cx231xx_fh *fh = file->private_data;
    /*struct cx231xx *dev = fh->dev;*/

    /*dprintk(2, "%s\n", __func__);*/

    return videobuf_poll_stream(file, &fh->vidq, wait);
}

static int mpeg_mmap(struct file *file, struct vm_area_struct *vma)
{
    struct cx231xx_fh *fh = file->private_data;
    struct cx231xx *dev = fh->dev;

    dprintk(2, "%s()\n", __func__);

    return videobuf_mmap_mapper(&fh->vidq, vma);
}

static struct v4l2_file_operations mpeg_fops = {
    .owner         = THIS_MODULE,
    .open          = mpeg_open,
    .release       = mpeg_release,
    .read          = mpeg_read,
    .poll          = mpeg_poll,
    .mmap          = mpeg_mmap,
    .ioctl         = video_ioctl2,
};

static const struct v4l2_ioctl_ops mpeg_ioctl_ops = {
    .vidioc_s_std        = vidioc_s_std,
    .vidioc_g_std        = vidioc_g_std,
    .vidioc_enum_input   = vidioc_enum_input,
    .vidioc_enumaudio    = vidioc_enumaudio,
    .vidioc_g_audio      = vidioc_g_audio,
    .vidioc_g_input      = vidioc_g_input,
    .vidioc_s_input      = vidioc_s_input,
    .vidioc_g_tuner      = vidioc_g_tuner,
    .vidioc_s_tuner      = vidioc_s_tuner,
    .vidioc_g_frequency  = vidioc_g_frequency,
    .vidioc_s_frequency  = vidioc_s_frequency,
    .vidioc_s_ctrl       = vidioc_s_ctrl,
    .vidioc_querycap     = vidioc_querycap,
    .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
    .vidioc_g_fmt_vid_cap    = vidioc_g_fmt_vid_cap,
    .vidioc_try_fmt_vid_cap  = vidioc_try_fmt_vid_cap,
    .vidioc_s_fmt_vid_cap    = vidioc_s_fmt_vid_cap,
    .vidioc_reqbufs      = vidioc_reqbufs,
    .vidioc_querybuf     = vidioc_querybuf,
    .vidioc_qbuf         = vidioc_qbuf,
    .vidioc_dqbuf        = vidioc_dqbuf,
    .vidioc_streamon     = vidioc_streamon,
    .vidioc_streamoff    = vidioc_streamoff,
    .vidioc_g_ext_ctrls  = vidioc_g_ext_ctrls,
    .vidioc_s_ext_ctrls  = vidioc_s_ext_ctrls,
    .vidioc_try_ext_ctrls    = vidioc_try_ext_ctrls,
    .vidioc_log_status   = vidioc_log_status,
    .vidioc_querymenu    = vidioc_querymenu,
    .vidioc_queryctrl    = vidioc_queryctrl,
/*  .vidioc_g_chip_ident     = cx231xx_g_chip_ident,*/
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*  .vidioc_g_register   = cx231xx_g_register,*/
/*  .vidioc_s_register   = cx231xx_s_register,*/
#endif
};

static struct video_device cx231xx_mpeg_template = {
    .name          = "cx231xx",
    .fops          = &mpeg_fops,
    .ioctl_ops     = &mpeg_ioctl_ops,
    .minor         = -1,
    .tvnorms       = CX231xx_NORMS,
    .current_norm  = V4L2_STD_NTSC_M,
};

void cx231xx_417_unregister(struct cx231xx *dev)
{
    dprintk(1, "%s()\n", __func__);
    dprintk(3, "%s()\n", __func__);

    if (dev->v4l_device) {
        if (-1 != dev->v4l_device->minor)
            video_unregister_device(dev->v4l_device);
        else
            video_device_release(dev->v4l_device);
        dev->v4l_device = NULL;
    }
}

static struct video_device *cx231xx_video_dev_alloc(
    struct cx231xx *dev,
    struct usb_device *usbdev,
    struct video_device *template,
    char *type)
{
    struct video_device *vfd;

    dprintk(1, "%s()\n", __func__);
    vfd = video_device_alloc();
    if (NULL == vfd)
        return NULL;
    *vfd = *template;
    vfd->minor = -1;
    snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name,
        type, cx231xx_boards[dev->model].name);

    vfd->v4l2_dev = &dev->v4l2_dev;
    vfd->release = video_device_release;

    return vfd;

}

int cx231xx_417_register(struct cx231xx *dev)
{
    /* FIXME: Port1 hardcoded here */
    int err = -ENODEV;
    struct cx231xx_tsport *tsport = &dev->ts1;

    dprintk(1, "%s()\n", __func__);

    /* Set default TV standard */
    dev->encodernorm = cx231xx_tvnorms[0];

    if (dev->encodernorm.id & V4L2_STD_525_60)
        tsport->height = 480;
    else
        tsport->height = 576;

    tsport->width = 720;
    cx2341x_fill_defaults(&dev->mpeg_params);
    dev->norm = V4L2_STD_NTSC;

    dev->mpeg_params.port = CX2341X_PORT_SERIAL;

    /* Allocate and initialize V4L video device */
    dev->v4l_device = cx231xx_video_dev_alloc(dev,
        dev->udev, &cx231xx_mpeg_template, "mpeg");
    err = video_register_device(dev->v4l_device,
        VFL_TYPE_GRABBER, -1);
    if (err < 0) {
        dprintk(3, "%s: can't register mpeg device\n", dev->name);
        return err;
    }

    dprintk(3, "%s: registered device video%d [mpeg]\n",
           dev->name, dev->v4l_device->num);

    return 0;
}

MODULE_FIRMWARE(CX231xx_FIRM_IMAGE_NAME);