ov534_9.c

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/*
 * ov534-ov9xxx gspca driver
 *
 * Copyright (C) 2009-2011 Jean-Francois Moine http://moinejf.free.fr
 * Copyright (C) 2008 Antonio Ospite <[email protected]>
 * Copyright (C) 2008 Jim Paris <[email protected]>
 *
 * Based on a prototype written by Mark Ferrell <[email protected]>
 * USB protocol reverse engineered by Jim Paris <[email protected]>
 * https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
 *
 * 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
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "ov534_9"

#include "gspca.h"

#define OV534_REG_ADDRESS   0xf1    /* sensor address */
#define OV534_REG_SUBADDR   0xf2
#define OV534_REG_WRITE     0xf3
#define OV534_REG_READ      0xf4
#define OV534_REG_OPERATION 0xf5
#define OV534_REG_STATUS    0xf6

#define OV534_OP_WRITE_3    0x37
#define OV534_OP_WRITE_2    0x33
#define OV534_OP_READ_2     0xf9

#define CTRL_TIMEOUT 500

MODULE_AUTHOR("Jean-Francois Moine <[email protected]>");
MODULE_DESCRIPTION("GSPCA/OV534_9 USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
    struct gspca_dev gspca_dev; /* !! must be the first item */
    __u32 last_pts;
    u8 last_fid;

    u8 sensor;
};
enum sensors {
    SENSOR_OV965x,      /* ov9657 */
    SENSOR_OV971x,      /* ov9712 */
    SENSOR_OV562x,      /* ov5621 */
    NSENSORS
};

static const struct v4l2_pix_format ov965x_mode[] = {
#define QVGA_MODE 0
    {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
        .bytesperline = 320,
        .sizeimage = 320 * 240 * 3 / 8 + 590,
        .colorspace = V4L2_COLORSPACE_JPEG},
#define VGA_MODE 1
    {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
        .bytesperline = 640,
        .sizeimage = 640 * 480 * 3 / 8 + 590,
        .colorspace = V4L2_COLORSPACE_JPEG},
#define SVGA_MODE 2
    {800, 600, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
        .bytesperline = 800,
        .sizeimage = 800 * 600 * 3 / 8 + 590,
        .colorspace = V4L2_COLORSPACE_JPEG},
#define XGA_MODE 3
    {1024, 768, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
        .bytesperline = 1024,
        .sizeimage = 1024 * 768 * 3 / 8 + 590,
        .colorspace = V4L2_COLORSPACE_JPEG},
#define SXGA_MODE 4
    {1280, 1024, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
        .bytesperline = 1280,
        .sizeimage = 1280 * 1024 * 3 / 8 + 590,
        .colorspace = V4L2_COLORSPACE_JPEG},
};

static const struct v4l2_pix_format ov971x_mode[] = {
    {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
        .bytesperline = 640,
        .sizeimage = 640 * 480,
        .colorspace = V4L2_COLORSPACE_SRGB
    }
};

static const struct v4l2_pix_format ov562x_mode[] = {
    {2592, 1680, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
        .bytesperline = 2592,
        .sizeimage = 2592 * 1680,
        .colorspace = V4L2_COLORSPACE_SRGB
    }
};

static const u8 bridge_init[][2] = {
    {0x88, 0xf8},
    {0x89, 0xff},
    {0x76, 0x03},
    {0x92, 0x03},
    {0x95, 0x10},
    {0xe2, 0x00},
    {0xe7, 0x3e},
    {0x8d, 0x1c},
    {0x8e, 0x00},
    {0x8f, 0x00},
    {0x1f, 0x00},
    {0xc3, 0xf9},
    {0x89, 0xff},
    {0x88, 0xf8},
    {0x76, 0x03},
    {0x92, 0x01},
    {0x93, 0x18},
    {0x1c, 0x0a},
    {0x1d, 0x48},
    {0xc0, 0x50},
    {0xc1, 0x3c},
    {0x34, 0x05},
    {0xc2, 0x0c},
    {0xc3, 0xf9},
    {0x34, 0x05},
    {0xe7, 0x2e},
    {0x31, 0xf9},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0x25, 0x42},
    {0x94, 0x11},
};

static const u8 ov965x_init[][2] = {
    {0x12, 0x80},   /* com7 - SSCB reset */
    {0x00, 0x00},   /* gain */
    {0x01, 0x80},   /* blue */
    {0x02, 0x80},   /* red */
    {0x03, 0x1b},   /* vref */
    {0x04, 0x03},   /* com1 - exposure low bits */
    {0x0b, 0x57},   /* ver */
    {0x0e, 0x61},   /* com5 */
    {0x0f, 0x42},   /* com6 */
    {0x11, 0x00},   /* clkrc */
    {0x12, 0x02},   /* com7 - 15fps VGA YUYV */
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
    {0x14, 0x28},   /* com9 */
    {0x16, 0x24},   /* reg16 */
    {0x17, 0x1d},   /* hstart*/
    {0x18, 0xbd},   /* hstop */
    {0x19, 0x01},   /* vstrt */
    {0x1a, 0x81},   /* vstop*/
    {0x1e, 0x04},   /* mvfp */
    {0x24, 0x3c},   /* aew */
    {0x25, 0x36},   /* aeb */
    {0x26, 0x71},   /* vpt */
    {0x27, 0x08},   /* bbias */
    {0x28, 0x08},   /* gbbias */
    {0x29, 0x15},   /* gr com */
    {0x2a, 0x00},   /* exhch */
    {0x2b, 0x00},   /* exhcl */
    {0x2c, 0x08},   /* rbias */
    {0x32, 0xff},   /* href */
    {0x33, 0x00},   /* chlf */
    {0x34, 0x3f},   /* aref1 */
    {0x35, 0x00},   /* aref2 */
    {0x36, 0xf8},   /* aref3 */
    {0x38, 0x72},   /* adc2 */
    {0x39, 0x57},   /* aref4 */
    {0x3a, 0x80},   /* tslb - yuyv */
    {0x3b, 0xc4},   /* com11 - night mode 1/4 frame rate */
    {0x3d, 0x99},   /* com13 */
    {0x3f, 0xc1},   /* edge */
    {0x40, 0xc0},   /* com15 */
    {0x41, 0x40},   /* com16 */
    {0x42, 0xc0},   /* com17 */
    {0x43, 0x0a},   /* rsvd */
    {0x44, 0xf0},
    {0x45, 0x46},
    {0x46, 0x62},
    {0x47, 0x2a},
    {0x48, 0x3c},
    {0x4a, 0xfc},
    {0x4b, 0xfc},
    {0x4c, 0x7f},
    {0x4d, 0x7f},
    {0x4e, 0x7f},
    {0x4f, 0x98},   /* matrix */
    {0x50, 0x98},
    {0x51, 0x00},
    {0x52, 0x28},
    {0x53, 0x70},
    {0x54, 0x98},
    {0x58, 0x1a},   /* matrix coef sign */
    {0x59, 0x85},   /* AWB control */
    {0x5a, 0xa9},
    {0x5b, 0x64},
    {0x5c, 0x84},
    {0x5d, 0x53},
    {0x5e, 0x0e},
    {0x5f, 0xf0},   /* AWB blue limit */
    {0x60, 0xf0},   /* AWB red limit */
    {0x61, 0xf0},   /* AWB green limit */
    {0x62, 0x00},   /* lcc1 */
    {0x63, 0x00},   /* lcc2 */
    {0x64, 0x02},   /* lcc3 */
    {0x65, 0x16},   /* lcc4 */
    {0x66, 0x01},   /* lcc5 */
    {0x69, 0x02},   /* hv */
    {0x6b, 0x5a},   /* dbvl */
    {0x6c, 0x04},
    {0x6d, 0x55},
    {0x6e, 0x00},
    {0x6f, 0x9d},
    {0x70, 0x21},   /* dnsth */
    {0x71, 0x78},
    {0x72, 0x00},   /* poidx */
    {0x73, 0x01},   /* pckdv */
    {0x74, 0x3a},   /* xindx */
    {0x75, 0x35},   /* yindx */
    {0x76, 0x01},
    {0x77, 0x02},
    {0x7a, 0x12},   /* gamma curve */
    {0x7b, 0x08},
    {0x7c, 0x16},
    {0x7d, 0x30},
    {0x7e, 0x5e},
    {0x7f, 0x72},
    {0x80, 0x82},
    {0x81, 0x8e},
    {0x82, 0x9a},
    {0x83, 0xa4},
    {0x84, 0xac},
    {0x85, 0xb8},
    {0x86, 0xc3},
    {0x87, 0xd6},
    {0x88, 0xe6},
    {0x89, 0xf2},
    {0x8a, 0x03},
    {0x8c, 0x89},   /* com19 */
    {0x14, 0x28},   /* com9 */
    {0x90, 0x7d},
    {0x91, 0x7b},
    {0x9d, 0x03},   /* lcc6 */
    {0x9e, 0x04},   /* lcc7 */
    {0x9f, 0x7a},
    {0xa0, 0x79},
    {0xa1, 0x40},   /* aechm */
    {0xa4, 0x50},   /* com21 */
    {0xa5, 0x68},   /* com26 */
    {0xa6, 0x4a},   /* AWB green */
    {0xa8, 0xc1},   /* refa8 */
    {0xa9, 0xef},   /* refa9 */
    {0xaa, 0x92},
    {0xab, 0x04},
    {0xac, 0x80},   /* black level control */
    {0xad, 0x80},
    {0xae, 0x80},
    {0xaf, 0x80},
    {0xb2, 0xf2},
    {0xb3, 0x20},
    {0xb4, 0x20},   /* ctrlb4 */
    {0xb5, 0x00},
    {0xb6, 0xaf},
    {0xbb, 0xae},
    {0xbc, 0x7f},   /* ADC channel offsets */
    {0xdb, 0x7f},
    {0xbe, 0x7f},
    {0xbf, 0x7f},
    {0xc0, 0xe2},
    {0xc1, 0xc0},
    {0xc2, 0x01},
    {0xc3, 0x4e},
    {0xc6, 0x85},
    {0xc7, 0x80},   /* com24 */
    {0xc9, 0xe0},
    {0xca, 0xe8},
    {0xcb, 0xf0},
    {0xcc, 0xd8},
    {0xcd, 0xf1},
    {0x4f, 0x98},   /* matrix */
    {0x50, 0x98},
    {0x51, 0x00},
    {0x52, 0x28},
    {0x53, 0x70},
    {0x54, 0x98},
    {0x58, 0x1a},
    {0xff, 0x41},   /* read 41, write ff 00 */
    {0x41, 0x40},   /* com16 */

    {0xc5, 0x03},   /* 60 Hz banding filter */
    {0x6a, 0x02},   /* 50 Hz banding filter */

    {0x12, 0x62},   /* com7 - 30fps VGA YUV */
    {0x36, 0xfa},   /* aref3 */
    {0x69, 0x0a},   /* hv */
    {0x8c, 0x89},   /* com22 */
    {0x14, 0x28},   /* com9 */
    {0x3e, 0x0c},
    {0x41, 0x40},   /* com16 */
    {0x72, 0x00},
    {0x73, 0x00},
    {0x74, 0x3a},
    {0x75, 0x35},
    {0x76, 0x01},
    {0xc7, 0x80},
    {0x03, 0x12},   /* vref */
    {0x17, 0x16},   /* hstart */
    {0x18, 0x02},   /* hstop */
    {0x19, 0x01},   /* vstrt */
    {0x1a, 0x3d},   /* vstop */
    {0x32, 0xff},   /* href */
    {0xc0, 0xaa},
};

static const u8 bridge_init_2[][2] = {
    {0x94, 0xaa},
    {0xf1, 0x60},
    {0xe5, 0x04},
    {0xc0, 0x50},
    {0xc1, 0x3c},
    {0x8c, 0x00},
    {0x8d, 0x1c},
    {0x34, 0x05},

    {0xc2, 0x0c},
    {0xc3, 0xf9},
    {0xda, 0x01},
    {0x50, 0x00},
    {0x51, 0xa0},
    {0x52, 0x3c},
    {0x53, 0x00},
    {0x54, 0x00},
    {0x55, 0x00},
    {0x57, 0x00},
    {0x5c, 0x00},
    {0x5a, 0xa0},
    {0x5b, 0x78},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0x94, 0x11},
};

static const u8 ov965x_init_2[][2] = {
    {0x3b, 0xc4},
    {0x1e, 0x04},   /* mvfp */
    {0x13, 0xe0},   /* com8 */
    {0x00, 0x00},   /* gain */
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
    {0x11, 0x03},   /* clkrc */
    {0x6b, 0x5a},   /* dblv */
    {0x6a, 0x05},
    {0xc5, 0x07},
    {0xa2, 0x4b},
    {0xa3, 0x3e},
    {0x2d, 0x00},
    {0xff, 0x42},   /* read 42, write ff 00 */
    {0x42, 0xc0},   /* com17 */
    {0x2d, 0x00},
    {0xff, 0x42},   /* read 42, write ff 00 */
    {0x42, 0xc1},   /* com17 */
/* sharpness */
    {0x3f, 0x01},
    {0xff, 0x42},   /* read 42, write ff 00 */
    {0x42, 0xc1},   /* com17 */
/* saturation */
    {0x4f, 0x98},   /* matrix */
    {0x50, 0x98},
    {0x51, 0x00},
    {0x52, 0x28},
    {0x53, 0x70},
    {0x54, 0x98},
    {0x58, 0x1a},
    {0xff, 0x41},   /* read 41, write ff 00 */
    {0x41, 0x40},   /* com16 */
/* contrast */
    {0x56, 0x40},
/* brightness */
    {0x55, 0x8f},
/* expo */
    {0x10, 0x25},   /* aech - exposure high bits */
    {0xff, 0x13},   /* read 13, write ff 00 */
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
};

static const u8 ov971x_init[][2] = {
    {0x12, 0x80},
    {0x09, 0x10},
    {0x1e, 0x07},
    {0x5f, 0x18},
    {0x69, 0x04},
    {0x65, 0x2a},
    {0x68, 0x0a},
    {0x39, 0x28},
    {0x4d, 0x90},
    {0xc1, 0x80},
    {0x0c, 0x30},
    {0x6d, 0x02},
    {0x96, 0xf1},
    {0xbc, 0x68},
    {0x12, 0x00},
    {0x3b, 0x00},
    {0x97, 0x80},
    {0x17, 0x25},
    {0x18, 0xa2},
    {0x19, 0x01},
    {0x1a, 0xca},
    {0x03, 0x0a},
    {0x32, 0x07},
    {0x98, 0x40},   /*{0x98, 0x00},*/
    {0x99, 0xA0},   /*{0x99, 0x00},*/
    {0x9a, 0x01},   /*{0x9a, 0x00},*/
    {0x57, 0x00},
    {0x58, 0x78},   /*{0x58, 0xc8},*/
    {0x59, 0x50},   /*{0x59, 0xa0},*/
    {0x4c, 0x13},
    {0x4b, 0x36},
    {0x3d, 0x3c},
    {0x3e, 0x03},
    {0xbd, 0x50},   /*{0xbd, 0xa0},*/
    {0xbe, 0x78},   /*{0xbe, 0xc8},*/
    {0x4e, 0x55},
    {0x4f, 0x55},
    {0x50, 0x55},
    {0x51, 0x55},
    {0x24, 0x55},
    {0x25, 0x40},
    {0x26, 0xa1},
    {0x5c, 0x59},
    {0x5d, 0x00},
    {0x11, 0x00},
    {0x2a, 0x98},
    {0x2b, 0x06},
    {0x2d, 0x00},
    {0x2e, 0x00},
    {0x13, 0xa5},
    {0x14, 0x40},
    {0x4a, 0x00},
    {0x49, 0xce},
    {0x22, 0x03},
    {0x09, 0x00}
};

static const u8 ov965x_start_1_vga[][2] = { /* same for qvga */
    {0x12, 0x62},   /* com7 - 30fps VGA YUV */
    {0x36, 0xfa},   /* aref3 */
    {0x69, 0x0a},   /* hv */
    {0x8c, 0x89},   /* com22 */
    {0x14, 0x28},   /* com9 */
    {0x3e, 0x0c},   /* com14 */
    {0x41, 0x40},   /* com16 */
    {0x72, 0x00},
    {0x73, 0x00},
    {0x74, 0x3a},
    {0x75, 0x35},
    {0x76, 0x01},
    {0xc7, 0x80},   /* com24 */
    {0x03, 0x12},   /* vref */
    {0x17, 0x16},   /* hstart */
    {0x18, 0x02},   /* hstop */
    {0x19, 0x01},   /* vstrt */
    {0x1a, 0x3d},   /* vstop */
    {0x32, 0xff},   /* href */
    {0xc0, 0xaa},
};

static const u8 ov965x_start_1_svga[][2] = {
    {0x12, 0x02},   /* com7 - YUYV - VGA 15 full resolution */
    {0x36, 0xf8},   /* aref3 */
    {0x69, 0x02},   /* hv */
    {0x8c, 0x0d},   /* com22 */
    {0x3e, 0x0c},   /* com14 */
    {0x41, 0x40},   /* com16 */
    {0x72, 0x00},
    {0x73, 0x01},
    {0x74, 0x3a},
    {0x75, 0x35},
    {0x76, 0x01},
    {0xc7, 0x80},   /* com24 */
    {0x03, 0x1b},   /* vref */
    {0x17, 0x1d},   /* hstart */
    {0x18, 0xbd},   /* hstop */
    {0x19, 0x01},   /* vstrt */
    {0x1a, 0x81},   /* vstop */
    {0x32, 0xff},   /* href */
    {0xc0, 0xe2},
};

static const u8 ov965x_start_1_xga[][2] = {
    {0x12, 0x02},   /* com7 */
    {0x36, 0xf8},   /* aref3 */
    {0x69, 0x02},   /* hv */
    {0x8c, 0x89},   /* com22 */
    {0x14, 0x28},   /* com9 */
    {0x3e, 0x0c},   /* com14 */
    {0x41, 0x40},   /* com16 */
    {0x72, 0x00},
    {0x73, 0x01},
    {0x74, 0x3a},
    {0x75, 0x35},
    {0x76, 0x01},
    {0xc7, 0x80},   /* com24 */
    {0x03, 0x1b},   /* vref */
    {0x17, 0x1d},   /* hstart */
    {0x18, 0xbd},   /* hstop */
    {0x19, 0x01},   /* vstrt */
    {0x1a, 0x81},   /* vstop */
    {0x32, 0xff},   /* href */
    {0xc0, 0xe2},
};

static const u8 ov965x_start_1_sxga[][2] = {
    {0x12, 0x02},   /* com7 */
    {0x36, 0xf8},   /* aref3 */
    {0x69, 0x02},   /* hv */
    {0x8c, 0x89},   /* com22 */
    {0x14, 0x28},   /* com9 */
    {0x3e, 0x0c},   /* com14 */
    {0x41, 0x40},   /* com16 */
    {0x72, 0x00},
    {0x73, 0x01},
    {0x74, 0x3a},
    {0x75, 0x35},
    {0x76, 0x01},
    {0xc7, 0x80},   /* com24 */
    {0x03, 0x1b},   /* vref */
    {0x17, 0x1d},   /* hstart */
    {0x18, 0x02},   /* hstop */
    {0x19, 0x01},   /* vstrt */
    {0x1a, 0x81},   /* vstop */
    {0x32, 0xff},   /* href */
    {0xc0, 0xe2},
};

static const u8 bridge_start_qvga[][2] = {
    {0x94, 0xaa},
    {0xf1, 0x60},
    {0xe5, 0x04},
    {0xc0, 0x50},
    {0xc1, 0x3c},
    {0x8c, 0x00},
    {0x8d, 0x1c},
    {0x34, 0x05},

    {0xc2, 0x4c},
    {0xc3, 0xf9},
    {0xda, 0x00},
    {0x50, 0x00},
    {0x51, 0xa0},
    {0x52, 0x78},
    {0x53, 0x00},
    {0x54, 0x00},
    {0x55, 0x00},
    {0x57, 0x00},
    {0x5c, 0x00},
    {0x5a, 0x50},
    {0x5b, 0x3c},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0x94, 0x11},
};

static const u8 bridge_start_vga[][2] = {
    {0x94, 0xaa},
    {0xf1, 0x60},
    {0xe5, 0x04},
    {0xc0, 0x50},
    {0xc1, 0x3c},
    {0x8c, 0x00},
    {0x8d, 0x1c},
    {0x34, 0x05},
    {0xc2, 0x0c},
    {0xc3, 0xf9},
    {0xda, 0x01},
    {0x50, 0x00},
    {0x51, 0xa0},
    {0x52, 0x3c},
    {0x53, 0x00},
    {0x54, 0x00},
    {0x55, 0x00},
    {0x57, 0x00},
    {0x5c, 0x00},
    {0x5a, 0xa0},
    {0x5b, 0x78},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0x94, 0x11},
};

static const u8 bridge_start_svga[][2] = {
    {0x94, 0xaa},
    {0xf1, 0x60},
    {0xe5, 0x04},
    {0xc0, 0xa0},
    {0xc1, 0x80},
    {0x8c, 0x00},
    {0x8d, 0x1c},
    {0x34, 0x05},
    {0xc2, 0x4c},
    {0xc3, 0xf9},
    {0x50, 0x00},
    {0x51, 0x40},
    {0x52, 0x00},
    {0x53, 0x00},
    {0x54, 0x00},
    {0x55, 0x88},
    {0x57, 0x00},
    {0x5c, 0x00},
    {0x5a, 0xc8},
    {0x5b, 0x96},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0xda, 0x00},
    {0x94, 0x11},
};

static const u8 bridge_start_xga[][2] = {
    {0x94, 0xaa},
    {0xf1, 0x60},
    {0xe5, 0x04},
    {0xc0, 0xa0},
    {0xc1, 0x80},
    {0x8c, 0x00},
    {0x8d, 0x1c},
    {0x34, 0x05},
    {0xc2, 0x4c},
    {0xc3, 0xf9},
    {0x50, 0x00},
    {0x51, 0x40},
    {0x52, 0x00},
    {0x53, 0x00},
    {0x54, 0x00},
    {0x55, 0x88},
    {0x57, 0x00},
    {0x5c, 0x01},
    {0x5a, 0x00},
    {0x5b, 0xc0},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0xda, 0x01},
    {0x94, 0x11},
};

static const u8 bridge_start_sxga[][2] = {
    {0x94, 0xaa},
    {0xf1, 0x60},
    {0xe5, 0x04},
    {0xc0, 0xa0},
    {0xc1, 0x80},
    {0x8c, 0x00},
    {0x8d, 0x1c},
    {0x34, 0x05},
    {0xc2, 0x0c},
    {0xc3, 0xf9},
    {0xda, 0x00},
    {0x35, 0x02},
    {0xd9, 0x10},
    {0x94, 0x11},
};

static const u8 ov965x_start_2_qvga[][2] = {
    {0x3b, 0xe4},   /* com11 - night mode 1/4 frame rate */
    {0x1e, 0x04},   /* mvfp */
    {0x13, 0xe0},   /* com8 */
    {0x00, 0x00},
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
    {0x11, 0x01},   /* clkrc */
    {0x6b, 0x5a},   /* dblv */
    {0x6a, 0x02},   /* 50 Hz banding filter */
    {0xc5, 0x03},   /* 60 Hz banding filter */
    {0xa2, 0x96},   /* bd50 */
    {0xa3, 0x7d},   /* bd60 */

    {0xff, 0x13},   /* read 13, write ff 00 */
    {0x13, 0xe7},
    {0x3a, 0x80},   /* tslb - yuyv */
};

static const u8 ov965x_start_2_vga[][2] = {
    {0x3b, 0xc4},   /* com11 - night mode 1/4 frame rate */
    {0x1e, 0x04},   /* mvfp */
    {0x13, 0xe0},   /* com8 */
    {0x00, 0x00},
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
    {0x11, 0x03},   /* clkrc */
    {0x6b, 0x5a},   /* dblv */
    {0x6a, 0x05},   /* 50 Hz banding filter */
    {0xc5, 0x07},   /* 60 Hz banding filter */
    {0xa2, 0x4b},   /* bd50 */
    {0xa3, 0x3e},   /* bd60 */

    {0x2d, 0x00},   /* advfl */
};

static const u8 ov965x_start_2_svga[][2] = {    /* same for xga */
    {0x3b, 0xc4},   /* com11 - night mode 1/4 frame rate */
    {0x1e, 0x04},   /* mvfp */
    {0x13, 0xe0},   /* com8 */
    {0x00, 0x00},
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
    {0x11, 0x01},   /* clkrc */
    {0x6b, 0x5a},   /* dblv */
    {0x6a, 0x0c},   /* 50 Hz banding filter */
    {0xc5, 0x0f},   /* 60 Hz banding filter */
    {0xa2, 0x4e},   /* bd50 */
    {0xa3, 0x41},   /* bd60 */
};

static const u8 ov965x_start_2_sxga[][2] = {
    {0x13, 0xe0},   /* com8 */
    {0x00, 0x00},
    {0x13, 0xe7},   /* com8 - everything (AGC, AWB and AEC) */
    {0x3b, 0xc4},   /* com11 - night mode 1/4 frame rate */
    {0x1e, 0x04},   /* mvfp */
    {0x11, 0x01},   /* clkrc */
    {0x6b, 0x5a},   /* dblv */
    {0x6a, 0x0c},   /* 50 Hz banding filter */
    {0xc5, 0x0f},   /* 60 Hz banding filter */
    {0xa2, 0x4e},   /* bd50 */
    {0xa3, 0x41},   /* bd60 */
};

static const u8 ov562x_init[][2] = {
    {0x88, 0x20},
    {0x89, 0x0a},
    {0x8a, 0x90},
    {0x8b, 0x06},
    {0x8c, 0x01},
    {0x8d, 0x10},
    {0x1c, 0x00},
    {0x1d, 0x48},
    {0x1d, 0x00},
    {0x1d, 0xff},
    {0x1c, 0x0a},
    {0x1d, 0x2e},
    {0x1d, 0x1e},
};

static const u8 ov562x_init_2[][2] = {
    {0x12, 0x80},
    {0x11, 0x41},
    {0x13, 0x00},
    {0x10, 0x1e},
    {0x3b, 0x07},
    {0x5b, 0x40},
    {0x39, 0x07},
    {0x53, 0x02},
    {0x54, 0x60},
    {0x04, 0x20},
    {0x27, 0x04},
    {0x3d, 0x40},
    {0x36, 0x00},
    {0xc5, 0x04},
    {0x4e, 0x00},
    {0x4f, 0x93},
    {0x50, 0x7b},
    {0xca, 0x0c},
    {0xcb, 0x0f},
    {0x39, 0x07},
    {0x4a, 0x10},
    {0x3e, 0x0a},
    {0x3d, 0x00},
    {0x0c, 0x38},
    {0x38, 0x90},
    {0x46, 0x30},
    {0x4f, 0x93},
    {0x50, 0x7b},
    {0xab, 0x00},
    {0xca, 0x0c},
    {0xcb, 0x0f},
    {0x37, 0x02},
    {0x44, 0x48},
    {0x8d, 0x44},
    {0x2a, 0x00},
    {0x2b, 0x00},
    {0x32, 0x00},
    {0x38, 0x90},
    {0x53, 0x02},
    {0x54, 0x60},
    {0x12, 0x00},
    {0x17, 0x12},
    {0x18, 0xb4},
    {0x19, 0x0c},
    {0x1a, 0xf4},
    {0x03, 0x4a},
    {0x89, 0x20},
    {0x83, 0x80},
    {0xb7, 0x9d},
    {0xb6, 0x11},
    {0xb5, 0x55},
    {0xb4, 0x00},
    {0xa9, 0xf0},
    {0xa8, 0x0a},
    {0xb8, 0xf0},
    {0xb9, 0xf0},
    {0xba, 0xf0},
    {0x81, 0x07},
    {0x63, 0x44},
    {0x13, 0xc7},
    {0x14, 0x60},
    {0x33, 0x75},
    {0x2c, 0x00},
    {0x09, 0x00},
    {0x35, 0x30},
    {0x27, 0x04},
    {0x3c, 0x07},
    {0x3a, 0x0a},
    {0x3b, 0x07},
    {0x01, 0x40},
    {0x02, 0x40},
    {0x16, 0x40},
    {0x52, 0xb0},
    {0x51, 0x83},
    {0x21, 0xbb},
    {0x22, 0x10},
    {0x23, 0x03},
    {0x35, 0x38},
    {0x20, 0x90},
    {0x28, 0x30},
    {0x73, 0xe1},
    {0x6c, 0x00},
    {0x6d, 0x80},
    {0x6e, 0x00},
    {0x70, 0x04},
    {0x71, 0x00},
    {0x8d, 0x04},
    {0x64, 0x00},
    {0x65, 0x00},
    {0x66, 0x00},
    {0x67, 0x00},
    {0x68, 0x00},
    {0x69, 0x00},
    {0x6a, 0x00},
    {0x6b, 0x00},
    {0x71, 0x94},
    {0x74, 0x20},
    {0x80, 0x09},
    {0x85, 0xc0},
};

static void reg_w_i(struct gspca_dev *gspca_dev, u16 reg, u8 val)
{
    struct usb_device *udev = gspca_dev->dev;
    int ret;

    if (gspca_dev->usb_err < 0)
        return;
    gspca_dev->usb_buf[0] = val;
    ret = usb_control_msg(udev,
                  usb_sndctrlpipe(udev, 0),
                  0x01,
                  USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                  0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
    if (ret < 0) {
        pr_err("reg_w failed %d\n", ret);
        gspca_dev->usb_err = ret;
    }
}

static void reg_w(struct gspca_dev *gspca_dev, u16 reg, u8 val)
{
    PDEBUG(D_USBO, "reg_w [%04x] = %02x", reg, val);
    reg_w_i(gspca_dev, reg, val);
}

static u8 reg_r(struct gspca_dev *gspca_dev, u16 reg)
{
    struct usb_device *udev = gspca_dev->dev;
    int ret;

    if (gspca_dev->usb_err < 0)
        return 0;
    ret = usb_control_msg(udev,
                  usb_rcvctrlpipe(udev, 0),
                  0x01,
                  USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                  0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
    PDEBUG(D_USBI, "reg_r [%04x] -> %02x", reg, gspca_dev->usb_buf[0]);
    if (ret < 0) {
        pr_err("reg_r err %d\n", ret);
        gspca_dev->usb_err = ret;
    }
    return gspca_dev->usb_buf[0];
}

static int sccb_check_status(struct gspca_dev *gspca_dev)
{
    u8 data;
    int i;

    for (i = 0; i < 5; i++) {
        msleep(10);
        data = reg_r(gspca_dev, OV534_REG_STATUS);

        switch (data) {
        case 0x00:
            return 1;
        case 0x04:
            return 0;
        case 0x03:
            break;
        default:
            PDEBUG(D_USBI|D_USBO,
                "sccb status 0x%02x, attempt %d/5",
                data, i + 1);
        }
    }
    return 0;
}

static void sccb_write(struct gspca_dev *gspca_dev, u8 reg, u8 val)
{
    PDEBUG(D_USBO, "sccb_write [%02x] = %02x", reg, val);
    reg_w_i(gspca_dev, OV534_REG_SUBADDR, reg);
    reg_w_i(gspca_dev, OV534_REG_WRITE, val);
    reg_w_i(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);

    if (!sccb_check_status(gspca_dev))
        pr_err("sccb_write failed\n");
}

static u8 sccb_read(struct gspca_dev *gspca_dev, u16 reg)
{
    reg_w(gspca_dev, OV534_REG_SUBADDR, reg);
    reg_w(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
    if (!sccb_check_status(gspca_dev))
        pr_err("sccb_read failed 1\n");

    reg_w(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
    if (!sccb_check_status(gspca_dev))
        pr_err("sccb_read failed 2\n");

    return reg_r(gspca_dev, OV534_REG_READ);
}

/* output a bridge sequence (reg - val) */
static void reg_w_array(struct gspca_dev *gspca_dev,
            const u8 (*data)[2], int len)
{
    while (--len >= 0) {
        reg_w(gspca_dev, (*data)[0], (*data)[1]);
        data++;
    }
}

/* output a sensor sequence (reg - val) */
static void sccb_w_array(struct gspca_dev *gspca_dev,
            const u8 (*data)[2], int len)
{
    while (--len >= 0) {
        if ((*data)[0] != 0xff) {
            sccb_write(gspca_dev, (*data)[0], (*data)[1]);
        } else {
            sccb_read(gspca_dev, (*data)[1]);
            sccb_write(gspca_dev, 0xff, 0x00);
        }
        data++;
    }
}

/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
 * (direction and output)? */
static void set_led(struct gspca_dev *gspca_dev, int status)
{
    u8 data;

    PDEBUG(D_CONF, "led status: %d", status);

    data = reg_r(gspca_dev, 0x21);
    data |= 0x80;
    reg_w(gspca_dev, 0x21, data);

    data = reg_r(gspca_dev, 0x23);
    if (status)
        data |= 0x80;
    else
        data &= ~0x80;

    reg_w(gspca_dev, 0x23, data);

    if (!status) {
        data = reg_r(gspca_dev, 0x21);
        data &= ~0x80;
        reg_w(gspca_dev, 0x21, data);
    }
}

static void setbrightness(struct gspca_dev *gspca_dev, s32 brightness)
{
    struct sd *sd = (struct sd *) gspca_dev;
    u8 val;
    s8 sval;

    if (sd->sensor == SENSOR_OV562x) {
        sval = brightness;
        val = 0x76;
        val += sval;
        sccb_write(gspca_dev, 0x24, val);
        val = 0x6a;
        val += sval;
        sccb_write(gspca_dev, 0x25, val);
        if (sval < -40)
            val = 0x71;
        else if (sval < 20)
            val = 0x94;
        else
            val = 0xe6;
        sccb_write(gspca_dev, 0x26, val);
    } else {
        val = brightness;
        if (val < 8)
            val = 15 - val;     /* f .. 8 */
        else
            val = val - 8;      /* 0 .. 7 */
        sccb_write(gspca_dev, 0x55, /* brtn - brightness adjustment */
                0x0f | (val << 4));
    }
}

static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
    sccb_write(gspca_dev, 0x56, /* cnst1 - contrast 1 ctrl coeff */
            val << 4);
}

static void setautogain(struct gspca_dev *gspca_dev, s32 autogain)
{
    u8 val;

/*fixme: should adjust agc/awb/aec by different controls */
    val = sccb_read(gspca_dev, 0x13);       /* com8 */
    sccb_write(gspca_dev, 0xff, 0x00);
    if (autogain)
        val |= 0x05;        /* agc & aec */
    else
        val &= 0xfa;
    sccb_write(gspca_dev, 0x13, val);
}

static void setexposure(struct gspca_dev *gspca_dev, s32 exposure)
{
    static const u8 expo[4] = {0x00, 0x25, 0x38, 0x5e};
    u8 val;

    sccb_write(gspca_dev, 0x10, expo[exposure]);    /* aec[9:2] */

    val = sccb_read(gspca_dev, 0x13);       /* com8 */
    sccb_write(gspca_dev, 0xff, 0x00);
    sccb_write(gspca_dev, 0x13, val);

    val = sccb_read(gspca_dev, 0xa1);       /* aech */
    sccb_write(gspca_dev, 0xff, 0x00);
    sccb_write(gspca_dev, 0xa1, val & 0xe0);    /* aec[15:10] = 0 */
}

static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
{
    if (val < 0) {              /* auto */
        val = sccb_read(gspca_dev, 0x42);   /* com17 */
        sccb_write(gspca_dev, 0xff, 0x00);
        sccb_write(gspca_dev, 0x42, val | 0x40);
                /* Edge enhancement strength auto adjust */
        return;
    }
    if (val != 0)
        val = 1 << (val - 1);
    sccb_write(gspca_dev, 0x3f, /* edge - edge enhance. factor */
            val);
    val = sccb_read(gspca_dev, 0x42);       /* com17 */
    sccb_write(gspca_dev, 0xff, 0x00);
    sccb_write(gspca_dev, 0x42, val & 0xbf);
}

static void setsatur(struct gspca_dev *gspca_dev, s32 val)
{
    u8 val1, val2, val3;
    static const u8 matrix[5][2] = {
        {0x14, 0x38},
        {0x1e, 0x54},
        {0x28, 0x70},
        {0x32, 0x8c},
        {0x48, 0x90}
    };

    val1 = matrix[val][0];
    val2 = matrix[val][1];
    val3 = val1 + val2;
    sccb_write(gspca_dev, 0x4f, val3);  /* matrix coeff */
    sccb_write(gspca_dev, 0x50, val3);
    sccb_write(gspca_dev, 0x51, 0x00);
    sccb_write(gspca_dev, 0x52, val1);
    sccb_write(gspca_dev, 0x53, val2);
    sccb_write(gspca_dev, 0x54, val3);
    sccb_write(gspca_dev, 0x58, 0x1a);  /* mtxs - coeff signs */

    val1 = sccb_read(gspca_dev, 0x41);  /* com16 */
    sccb_write(gspca_dev, 0xff, 0x00);
    sccb_write(gspca_dev, 0x41, val1);
}

static void setlightfreq(struct gspca_dev *gspca_dev, s32 freq)
{
    u8 val;

    val = sccb_read(gspca_dev, 0x13);       /* com8 */
    sccb_write(gspca_dev, 0xff, 0x00);
    if (freq == 0) {
        sccb_write(gspca_dev, 0x13, val & 0xdf);
        return;
    }
    sccb_write(gspca_dev, 0x13, val | 0x20);

    val = sccb_read(gspca_dev, 0x42);       /* com17 */
    sccb_write(gspca_dev, 0xff, 0x00);
    if (freq == 1)
        val |= 0x01;
    else
        val &= 0xfe;
    sccb_write(gspca_dev, 0x42, val);
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
             const struct usb_device_id *id)
{
    return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
    struct sd *sd = (struct sd *) gspca_dev;
    u16 sensor_id;

    /* reset bridge */
    reg_w(gspca_dev, 0xe7, 0x3a);
    reg_w(gspca_dev, 0xe0, 0x08);
    msleep(100);

    /* initialize the sensor address */
    reg_w(gspca_dev, OV534_REG_ADDRESS, 0x60);

    /* reset sensor */
    sccb_write(gspca_dev, 0x12, 0x80);
    msleep(10);

    /* probe the sensor */
    sccb_read(gspca_dev, 0x0a);
    sensor_id = sccb_read(gspca_dev, 0x0a) << 8;
    sccb_read(gspca_dev, 0x0b);
    sensor_id |= sccb_read(gspca_dev, 0x0b);
    PDEBUG(D_PROBE, "Sensor ID: %04x", sensor_id);

    /* initialize */
    if ((sensor_id & 0xfff0) == 0x9650) {
        sd->sensor = SENSOR_OV965x;

        gspca_dev->cam.cam_mode = ov965x_mode;
        gspca_dev->cam.nmodes = ARRAY_SIZE(ov965x_mode);

        reg_w_array(gspca_dev, bridge_init,
                ARRAY_SIZE(bridge_init));
        sccb_w_array(gspca_dev, ov965x_init,
                ARRAY_SIZE(ov965x_init));
        reg_w_array(gspca_dev, bridge_init_2,
                ARRAY_SIZE(bridge_init_2));
        sccb_w_array(gspca_dev, ov965x_init_2,
                ARRAY_SIZE(ov965x_init_2));
        reg_w(gspca_dev, 0xe0, 0x00);
        reg_w(gspca_dev, 0xe0, 0x01);
        set_led(gspca_dev, 0);
        reg_w(gspca_dev, 0xe0, 0x00);
    } else if ((sensor_id & 0xfff0) == 0x9710) {
        const char *p;
        int l;

        sd->sensor = SENSOR_OV971x;

        gspca_dev->cam.cam_mode = ov971x_mode;
        gspca_dev->cam.nmodes = ARRAY_SIZE(ov971x_mode);

        gspca_dev->cam.bulk = 1;
        gspca_dev->cam.bulk_size = 16384;
        gspca_dev->cam.bulk_nurbs = 2;

        sccb_w_array(gspca_dev, ov971x_init,
                ARRAY_SIZE(ov971x_init));

        /* set video format on bridge processor */
        /* access bridge processor's video format registers at: 0x00 */
        reg_w(gspca_dev, 0x1c, 0x00);
        /*set register: 0x00 is 'RAW8', 0x40 is 'YUV422' (YUYV?)*/
        reg_w(gspca_dev, 0x1d, 0x00);

        /* Will W. specific stuff
         * set VSYNC to
         *  output (0x1f) if first webcam
         *  input (0x17) if 2nd or 3rd webcam */
        p = video_device_node_name(&gspca_dev->vdev);
        l = strlen(p) - 1;
        if (p[l] == '0')
            reg_w(gspca_dev, 0x56, 0x1f);
        else
            reg_w(gspca_dev, 0x56, 0x17);
    } else if ((sensor_id & 0xfff0) == 0x5620) {
        sd->sensor = SENSOR_OV562x;
        gspca_dev->cam.cam_mode = ov562x_mode;
        gspca_dev->cam.nmodes = ARRAY_SIZE(ov562x_mode);

        reg_w_array(gspca_dev, ov562x_init,
                ARRAY_SIZE(ov562x_init));
        sccb_w_array(gspca_dev, ov562x_init_2,
                ARRAY_SIZE(ov562x_init_2));
        reg_w(gspca_dev, 0xe0, 0x00);
    } else {
        pr_err("Unknown sensor %04x", sensor_id);
        return -EINVAL;
    }

    return gspca_dev->usb_err;
}

static int sd_start(struct gspca_dev *gspca_dev)
{
    struct sd *sd = (struct sd *) gspca_dev;

    if (sd->sensor == SENSOR_OV971x)
        return gspca_dev->usb_err;
    if (sd->sensor == SENSOR_OV562x)
        return gspca_dev->usb_err;

    switch (gspca_dev->curr_mode) {
    case QVGA_MODE:         /* 320x240 */
        sccb_w_array(gspca_dev, ov965x_start_1_vga,
                ARRAY_SIZE(ov965x_start_1_vga));
        reg_w_array(gspca_dev, bridge_start_qvga,
                ARRAY_SIZE(bridge_start_qvga));
        sccb_w_array(gspca_dev, ov965x_start_2_qvga,
                ARRAY_SIZE(ov965x_start_2_qvga));
        break;
    case VGA_MODE:          /* 640x480 */
        sccb_w_array(gspca_dev, ov965x_start_1_vga,
                ARRAY_SIZE(ov965x_start_1_vga));
        reg_w_array(gspca_dev, bridge_start_vga,
                ARRAY_SIZE(bridge_start_vga));
        sccb_w_array(gspca_dev, ov965x_start_2_vga,
                ARRAY_SIZE(ov965x_start_2_vga));
        break;
    case SVGA_MODE:         /* 800x600 */
        sccb_w_array(gspca_dev, ov965x_start_1_svga,
                ARRAY_SIZE(ov965x_start_1_svga));
        reg_w_array(gspca_dev, bridge_start_svga,
                ARRAY_SIZE(bridge_start_svga));
        sccb_w_array(gspca_dev, ov965x_start_2_svga,
                ARRAY_SIZE(ov965x_start_2_svga));
        break;
    case XGA_MODE:          /* 1024x768 */
        sccb_w_array(gspca_dev, ov965x_start_1_xga,
                ARRAY_SIZE(ov965x_start_1_xga));
        reg_w_array(gspca_dev, bridge_start_xga,
                ARRAY_SIZE(bridge_start_xga));
        sccb_w_array(gspca_dev, ov965x_start_2_svga,
                ARRAY_SIZE(ov965x_start_2_svga));
        break;
    default:
/*  case SXGA_MODE:          * 1280x1024 */
        sccb_w_array(gspca_dev, ov965x_start_1_sxga,
                ARRAY_SIZE(ov965x_start_1_sxga));
        reg_w_array(gspca_dev, bridge_start_sxga,
                ARRAY_SIZE(bridge_start_sxga));
        sccb_w_array(gspca_dev, ov965x_start_2_sxga,
                ARRAY_SIZE(ov965x_start_2_sxga));
        break;
    }

    reg_w(gspca_dev, 0xe0, 0x00);
    reg_w(gspca_dev, 0xe0, 0x00);
    set_led(gspca_dev, 1);
    return gspca_dev->usb_err;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
    reg_w(gspca_dev, 0xe0, 0x01);
    set_led(gspca_dev, 0);
    reg_w(gspca_dev, 0xe0, 0x00);
}

/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
#define UVC_STREAM_EOH  (1 << 7)
#define UVC_STREAM_ERR  (1 << 6)
#define UVC_STREAM_STI  (1 << 5)
#define UVC_STREAM_RES  (1 << 4)
#define UVC_STREAM_SCR  (1 << 3)
#define UVC_STREAM_PTS  (1 << 2)
#define UVC_STREAM_EOF  (1 << 1)
#define UVC_STREAM_FID  (1 << 0)

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
            u8 *data, int len)
{
    struct sd *sd = (struct sd *) gspca_dev;
    __u32 this_pts;
    u8 this_fid;
    int remaining_len = len;
    int payload_len;

    payload_len = gspca_dev->cam.bulk ? 2048 : 2040;
    do {
        len = min(remaining_len, payload_len);

        /* Payloads are prefixed with a UVC-style header.  We
           consider a frame to start when the FID toggles, or the PTS
           changes.  A frame ends when EOF is set, and we've received
           the correct number of bytes. */

        /* Verify UVC header.  Header length is always 12 */
        if (data[0] != 12 || len < 12) {
            PDEBUG(D_PACK, "bad header");
            goto discard;
        }

        /* Check errors */
        if (data[1] & UVC_STREAM_ERR) {
            PDEBUG(D_PACK, "payload error");
            goto discard;
        }

        /* Extract PTS and FID */
        if (!(data[1] & UVC_STREAM_PTS)) {
            PDEBUG(D_PACK, "PTS not present");
            goto discard;
        }
        this_pts = (data[5] << 24) | (data[4] << 16)
                        | (data[3] << 8) | data[2];
        this_fid = data[1] & UVC_STREAM_FID;

        /* If PTS or FID has changed, start a new frame. */
        if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
            if (gspca_dev->last_packet_type == INTER_PACKET)
                gspca_frame_add(gspca_dev, LAST_PACKET,
                        NULL, 0);
            sd->last_pts = this_pts;
            sd->last_fid = this_fid;
            gspca_frame_add(gspca_dev, FIRST_PACKET,
                    data + 12, len - 12);
        /* If this packet is marked as EOF, end the frame */
        } else if (data[1] & UVC_STREAM_EOF) {
            sd->last_pts = 0;
            gspca_frame_add(gspca_dev, LAST_PACKET,
                    data + 12, len - 12);
        } else {

            /* Add the data from this payload */
            gspca_frame_add(gspca_dev, INTER_PACKET,
                    data + 12, len - 12);
        }

        /* Done this payload */
        goto scan_next;

discard:
        /* Discard data until a new frame starts. */
        gspca_dev->last_packet_type = DISCARD_PACKET;

scan_next:
        remaining_len -= len;
        data += len;
    } while (remaining_len > 0);
}

static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
{
    struct gspca_dev *gspca_dev =
        container_of(ctrl->handler, struct gspca_dev, ctrl_handler);

    gspca_dev->usb_err = 0;

    if (!gspca_dev->streaming)
        return 0;

    switch (ctrl->id) {
    case V4L2_CID_BRIGHTNESS:
        setbrightness(gspca_dev, ctrl->val);
        break;
    case V4L2_CID_CONTRAST:
        setcontrast(gspca_dev, ctrl->val);
        break;
    case V4L2_CID_SATURATION:
        setsatur(gspca_dev, ctrl->val);
        break;
    case V4L2_CID_POWER_LINE_FREQUENCY:
        setlightfreq(gspca_dev, ctrl->val);
        break;
    case V4L2_CID_SHARPNESS:
        setsharpness(gspca_dev, ctrl->val);
        break;
    case V4L2_CID_AUTOGAIN:
        if (ctrl->is_new)
            setautogain(gspca_dev, ctrl->val);
        if (!ctrl->val && gspca_dev->exposure->is_new)
            setexposure(gspca_dev, gspca_dev->exposure->val);
        break;
    }
    return gspca_dev->usb_err;
}

static const struct v4l2_ctrl_ops sd_ctrl_ops = {
    .s_ctrl = sd_s_ctrl,
};

static int sd_init_controls(struct gspca_dev *gspca_dev)
{
    struct sd *sd = (struct sd *)gspca_dev;
    struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;

    if (sd->sensor == SENSOR_OV971x)
        return 0;
    gspca_dev->vdev.ctrl_handler = hdl;
    v4l2_ctrl_handler_init(hdl, 7);
    if (sd->sensor == SENSOR_OV562x) {
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_BRIGHTNESS, -90, 90, 1, 0);
    } else {
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_BRIGHTNESS, 0, 15, 1, 7);
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_CONTRAST, 0, 15, 1, 3);
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_SATURATION, 0, 4, 1, 2);
        /* -1 = auto */
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_SHARPNESS, -1, 4, 1, -1);
        gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
        gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
            V4L2_CID_EXPOSURE, 0, 3, 1, 0);
        v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
            V4L2_CID_POWER_LINE_FREQUENCY,
            V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0);
        v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
    }

    if (hdl->error) {
        pr_err("Could not initialize controls\n");
        return hdl->error;
    }
    return 0;
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
    .name     = MODULE_NAME,
    .config   = sd_config,
    .init     = sd_init,
    .init_controls = sd_init_controls,
    .start    = sd_start,
    .stopN    = sd_stopN,
    .pkt_scan = sd_pkt_scan,
};

/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
    {USB_DEVICE(0x05a9, 0x8065)},
    {USB_DEVICE(0x06f8, 0x3003)},
    {USB_DEVICE(0x05a9, 0x1550)},
    {}
};

MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
    return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
                THIS_MODULE);
}

static struct usb_driver sd_driver = {
    .name       = MODULE_NAME,
    .id_table   = device_table,
    .probe      = sd_probe,
    .disconnect = gspca_disconnect,
#ifdef CONFIG_PM
    .suspend    = gspca_suspend,
    .resume     = gspca_resume,
    .reset_resume = gspca_resume,
#endif
};

module_usb_driver(sd_driver);