/*
 * Sonix sn9c102p sn9c105 sn9c120 (jpeg) subdriver
 *
 * Copyright (C) 2009-2011 Jean-François Moine <http://moinejf.free.fr>
 * Copyright (C) 2005 Michel Xhaard mxhaard@magic.fr
 *
 * 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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "sonixj"

#include <linux/input.h>
#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR("Jean-François Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("GSPCA/SONIX JPEG USB Camera Driver");
MODULE_LICENSE("GPL");

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

        atomic_t avg_lum;
        struct v4l2_ctrl *brightness;
        struct v4l2_ctrl *contrast;
        struct v4l2_ctrl *saturation;
        struct { /* red/blue balance control cluster */
                struct v4l2_ctrl *red_bal;
                struct v4l2_ctrl *blue_bal;
        };
        struct { /* hflip/vflip control cluster */
                struct v4l2_ctrl *vflip;
                struct v4l2_ctrl *hflip;
        };
        struct v4l2_ctrl *gamma;
        struct v4l2_ctrl *illum;
        struct v4l2_ctrl *sharpness;
        struct v4l2_ctrl *freq;
        u32 exposure;

        struct work_struct work;

        u32 pktsz;                      /* (used by pkt_scan) */
        u16 npkt;
        s8 nchg;
        s8 short_mark;

        u8 quality;                     /* image quality */
#define QUALITY_MIN 25
#define QUALITY_MAX 90
#define QUALITY_DEF 70

        u8 reg01;
        u8 reg17;
        u8 reg18;
        u8 flags;

        s8 ag_cnt;
#define AG_CNT_START 13

        u8 bridge;
#define BRIDGE_SN9C102P 0
#define BRIDGE_SN9C105 1
#define BRIDGE_SN9C110 2
#define BRIDGE_SN9C120 3
        u8 sensor;                      /* Type of image sensor chip */
        u8 i2c_addr;

        u8 jpeg_hdr[JPEG_HDR_SZ];
};
enum sensors {
        SENSOR_ADCM1700,
        SENSOR_GC0307,
        SENSOR_HV7131R,
        SENSOR_MI0360,
        SENSOR_MI0360B,
        SENSOR_MO4000,
        SENSOR_MT9V111,
        SENSOR_OM6802,
        SENSOR_OV7630,
        SENSOR_OV7648,
        SENSOR_OV7660,
        SENSOR_PO1030,
        SENSOR_PO2030N,
        SENSOR_SOI768,
        SENSOR_SP80708,
};

static void qual_upd(struct work_struct *work);

/* device flags */
#define F_PDN_INV       0x01    /* inverse pin S_PWR_DN / sn_xxx tables */
#define F_ILLUM         0x02    /* presence of illuminator */

/* sn9c1xx definitions */
/* register 0x01 */
#define S_PWR_DN        0x01    /* sensor power down */
#define S_PDN_INV       0x02    /* inverse pin S_PWR_DN */
#define V_TX_EN         0x04    /* video transfer enable */
#define LED             0x08    /* output to pin LED */
#define SCL_SEL_OD      0x20    /* open-drain mode */
#define SYS_SEL_48M     0x40    /* system clock 0: 24MHz, 1: 48MHz */
/* register 0x17 */
#define MCK_SIZE_MASK   0x1f    /* sensor master clock */
#define SEN_CLK_EN      0x20    /* enable sensor clock */
#define DEF_EN          0x80    /* defect pixel by 0: soft, 1: hard */

static const struct v4l2_pix_format cif_mode[] = {
        {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 352,
                .sizeimage = 352 * 288 * 4 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 0},
};
static const struct v4l2_pix_format vga_mode[] = {
        {160, 120, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 160,
                .sizeimage = 160 * 120 * 4 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 2},
        {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 320,
                .sizeimage = 320 * 240 * 3 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 1},
        {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 640,
                /* Note 3 / 8 is not large enough, not even 5 / 8 is ?! */
                .sizeimage = 640 * 480 * 3 / 4 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 0},
};

static const u8 sn_adcm1700[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x43,   0x60,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x80,   0x51,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x05,   0x01,   0x05,   0x16,   0x12,   0x42,
/*      reg18   reg19   reg1a   reg1b */
        0x06,   0x00,   0x00,   0x00
};

static const u8 sn_gc0307[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x61,   0x62,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x80,   0x21,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x03,   0x01,   0x08,   0x28,   0x1e,   0x02,
/*      reg18   reg19   reg1a   reg1b */
        0x06,   0x00,   0x00,   0x00
};

static const u8 sn_hv7131[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x03,   0x60,   0x00,   0x1a,   0x20,   0x20,   0x20,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x11,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x01,   0x03,   0x28,   0x1e,   0x41,
/*      reg18   reg19   reg1a   reg1b */
        0x0a,   0x00,   0x00,   0x00
};

static const u8 sn_mi0360[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x63,   0x40,   0x00,   0x1a,   0x20,   0x20,   0x20,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x5d,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x02,   0x0a,   0x28,   0x1e,   0x61,
/*      reg18   reg19   reg1a   reg1b */
        0x06,   0x00,   0x00,   0x00
};

static const u8 sn_mi0360b[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x61,   0x40,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x5d,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x02,   0x0a,   0x28,   0x1e,   0x40,
/*      reg18   reg19   reg1a   reg1b */
        0x06,   0x00,   0x00,   0x00
};

static const u8 sn_mo4000[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x23,   0x60,   0x00,   0x1a,   0x00,   0x20,   0x18,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x21,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,    0x00,  0x0b,   0x0f,   0x14,   0x28,   0x1e,   0x40,
/*      reg18   reg19   reg1a   reg1b */
        0x08,   0x00,   0x00,   0x00
};

static const u8 sn_mt9v111[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x61,   0x40,   0x00,   0x1a,   0x20,   0x20,   0x20,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x5c,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x02,   0x1c,   0x28,   0x1e,   0x40,
/*      reg18   reg19   reg1a   reg1b */
        0x06,   0x00,   0x00,   0x00
};

static const u8 sn_om6802[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x23,   0x72,   0x00,   0x1a,   0x20,   0x20,   0x19,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x80,   0x34,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x51,   0x01,   0x00,   0x28,   0x1e,   0x40,
/*      reg18   reg19   reg1a   reg1b */
        0x05,   0x00,   0x00,   0x00
};

static const u8 sn_ov7630[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x21,   0x40,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x21,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x04,   0x01,   0x0a,   0x28,   0x1e,   0xc2,
/*      reg18   reg19   reg1a   reg1b */
        0x0b,   0x00,   0x00,   0x00
};

static const u8 sn_ov7648[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x63,   0x40,   0x00,   0x1a,   0x20,   0x20,   0x20,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x21,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x01,   0x00,   0x28,   0x1e,   0x00,
/*      reg18   reg19   reg1a   reg1b */
        0x0b,   0x00,   0x00,   0x00
};

static const u8 sn_ov7660[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x61,   0x40,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x21,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x01,   0x01,   0x08,   0x28,   0x1e,   0x20,
/*      reg18   reg19   reg1a   reg1b */
        0x07,   0x00,   0x00,   0x00
};

static const u8 sn_po1030[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x21,   0x62,   0x00,   0x1a,   0x20,   0x20,   0x20,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x6e,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x06,   0x06,   0x28,   0x1e,   0x00,
/*      reg18   reg19   reg1a   reg1b */
        0x07,   0x00,   0x00,   0x00
};

static const u8 sn_po2030n[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x63,   0x40,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x6e,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x01,   0x14,   0x28,   0x1e,   0x00,
/*      reg18   reg19   reg1a   reg1b */
        0x07,   0x00,   0x00,   0x00
};

static const u8 sn_soi768[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x21,   0x40,   0x00,   0x1a,   0x00,   0x00,   0x00,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x21,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x01,   0x08,   0x28,   0x1e,   0x00,
/*      reg18   reg19   reg1a   reg1b */
        0x07,   0x00,   0x00,   0x00
};

static const u8 sn_sp80708[0x1c] = {
/*      reg0    reg1    reg2    reg3    reg4    reg5    reg6    reg7 */
        0x00,   0x63,   0x60,   0x00,   0x1a,   0x20,   0x20,   0x20,
/*      reg8    reg9    rega    regb    regc    regd    rege    regf */
        0x81,   0x18,   0x00,   0x00,   0x00,   0x00,   0x00,   0x00,
/*      reg10   reg11   reg12   reg13   reg14   reg15   reg16   reg17 */
        0x03,   0x00,   0x00,   0x03,   0x04,   0x28,   0x1e,   0x00,
/*      reg18   reg19   reg1a   reg1b */
        0x07,   0x00,   0x00,   0x00
};

/* sequence specific to the sensors - !! index = SENSOR_xxx */
static const u8 *sn_tb[] = {
[SENSOR_ADCM1700] =     sn_adcm1700,
[SENSOR_GC0307] =       sn_gc0307,
[SENSOR_HV7131R] =      sn_hv7131,
[SENSOR_MI0360] =       sn_mi0360,
[SENSOR_MI0360B] =      sn_mi0360b,
[SENSOR_MO4000] =       sn_mo4000,
[SENSOR_MT9V111] =      sn_mt9v111,
[SENSOR_OM6802] =       sn_om6802,
[SENSOR_OV7630] =       sn_ov7630,
[SENSOR_OV7648] =       sn_ov7648,
[SENSOR_OV7660] =       sn_ov7660,
[SENSOR_PO1030] =       sn_po1030,
[SENSOR_PO2030N] =      sn_po2030n,
[SENSOR_SOI768] =       sn_soi768,
[SENSOR_SP80708] =      sn_sp80708,
};

/* default gamma table */
static const u8 gamma_def[17] = {
        0x00, 0x2d, 0x46, 0x5a, 0x6c, 0x7c, 0x8b, 0x99,
        0xa6, 0xb2, 0xbf, 0xca, 0xd5, 0xe0, 0xeb, 0xf5, 0xff
};
/* gamma for sensor ADCM1700 */
static const u8 gamma_spec_0[17] = {
        0x0f, 0x39, 0x5a, 0x74, 0x86, 0x95, 0xa6, 0xb4,
        0xbd, 0xc4, 0xcc, 0xd4, 0xd5, 0xde, 0xe4, 0xed, 0xf5
};
/* gamma for sensors HV7131R and MT9V111 */
static const u8 gamma_spec_1[17] = {
        0x08, 0x3a, 0x52, 0x65, 0x75, 0x83, 0x91, 0x9d,
        0xa9, 0xb4, 0xbe, 0xc8, 0xd2, 0xdb, 0xe4, 0xed, 0xf5
};
/* gamma for sensor GC0307 */
static const u8 gamma_spec_2[17] = {
        0x14, 0x37, 0x50, 0x6a, 0x7c, 0x8d, 0x9d, 0xab,
        0xb5, 0xbf, 0xc2, 0xcb, 0xd1, 0xd6, 0xdb, 0xe1, 0xeb
};
/* gamma for sensor SP80708 */
static const u8 gamma_spec_3[17] = {
        0x0a, 0x2d, 0x4e, 0x68, 0x7d, 0x8f, 0x9f, 0xab,
        0xb7, 0xc2, 0xcc, 0xd3, 0xd8, 0xde, 0xe2, 0xe5, 0xe6
};

/* color matrix and offsets */
static const u8 reg84[] = {
        0x14, 0x00, 0x27, 0x00, 0x07, 0x00,     /* YR YG YB gains */
        0xe8, 0x0f, 0xda, 0x0f, 0x40, 0x00,     /* UR UG UB */
        0x3e, 0x00, 0xcd, 0x0f, 0xf7, 0x0f,     /* VR VG VB */
        0x00, 0x00, 0x00                        /* YUV offsets */
};

#define DELAY   0xdd

static const u8 adcm1700_sensor_init[][8] = {
        {0xa0, 0x51, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x04, 0x08, 0x00, 0x00, 0x00, 0x10},       /* reset */
        {DELAY, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
        {0xb0, 0x51, 0x04, 0x00, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
        {0xb0, 0x51, 0x0c, 0xe0, 0x2e, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x10, 0x02, 0x02, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x14, 0x0e, 0x0e, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x1c, 0x00, 0x80, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x20, 0x01, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
        {0xb0, 0x51, 0x04, 0x04, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
        {0xb0, 0x51, 0x04, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x51, 0xfe, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x14, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x32, 0x00, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 adcm1700_sensor_param1[][8] = {
        {0xb0, 0x51, 0x26, 0xf9, 0x01, 0x00, 0x00, 0x10},       /* exposure? */
        {0xd0, 0x51, 0x1e, 0x8e, 0x8e, 0x8e, 0x8e, 0x10},

        {0xa0, 0x51, 0xfe, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x00, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x51, 0xfe, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x32, 0x00, 0x72, 0x00, 0x00, 0x10},
        {0xd0, 0x51, 0x1e, 0xbe, 0xd7, 0xe8, 0xbe, 0x10},       /* exposure? */

        {0xa0, 0x51, 0xfe, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x00, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x51, 0xfe, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xb0, 0x51, 0x32, 0x00, 0xa2, 0x00, 0x00, 0x10},
        {}
};
static const u8 gc0307_sensor_init[][8] = {
        {0xa0, 0x21, 0x43, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x44, 0xa2, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x01, 0x6a, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x02, 0x70, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x1d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x11, 0x05, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x05, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x06, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x07, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x08, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x09, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x0a, 0xe8, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x0b, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x0c, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x0d, 0x22, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x0e, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x0f, 0xb2, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x12, 0x70, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /*delay 10ms*/
        {0xa0, 0x21, 0x13, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x15, 0xb8, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x16, 0x13, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x17, 0x52, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x18, 0x50, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x1e, 0x0d, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x1f, 0x32, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x61, 0x90, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x63, 0x70, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x65, 0x98, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x67, 0x90, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x03, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x04, 0x96, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x45, 0x27, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x47, 0x2c, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x43, 0x47, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x44, 0xd8, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 gc0307_sensor_param1[][8] = {
        {0xa0, 0x21, 0x68, 0x13, 0x00, 0x00, 0x00, 0x10},
        {0xd0, 0x21, 0x61, 0x80, 0x00, 0x80, 0x00, 0x10},
        {0xc0, 0x21, 0x65, 0x80, 0x00, 0x80, 0x00, 0x10},
        {0xc0, 0x21, 0x63, 0xa0, 0x00, 0xa6, 0x00, 0x10},
/*param3*/
        {0xa0, 0x21, 0x01, 0x6e, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x02, 0x88, 0x00, 0x00, 0x00, 0x10},
        {}
};

static const u8 hv7131r_sensor_init[][8] = {
        {0xc1, 0x11, 0x01, 0x08, 0x01, 0x00, 0x00, 0x10},
        {0xb1, 0x11, 0x34, 0x17, 0x7f, 0x00, 0x00, 0x10},
        {0xd1, 0x11, 0x40, 0xff, 0x7f, 0x7f, 0x7f, 0x10},
/*      {0x91, 0x11, 0x44, 0x00, 0x00, 0x00, 0x00, 0x10}, */
        {0xd1, 0x11, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x11, 0x14, 0x01, 0xe2, 0x02, 0x82, 0x10},
/*      {0x91, 0x11, 0x18, 0x00, 0x00, 0x00, 0x00, 0x10}, */

        {0xa1, 0x11, 0x01, 0x08, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x01, 0x08, 0x00, 0x00, 0x00, 0x10},
        {0xc1, 0x11, 0x25, 0x00, 0x61, 0xa8, 0x00, 0x10},
        {0xa1, 0x11, 0x30, 0x22, 0x00, 0x00, 0x00, 0x10},
        {0xc1, 0x11, 0x31, 0x20, 0x2e, 0x20, 0x00, 0x10},
        {0xc1, 0x11, 0x25, 0x00, 0xc3, 0x50, 0x00, 0x10},
        {0xa1, 0x11, 0x30, 0x07, 0x00, 0x00, 0x00, 0x10}, /* gain14 */
        {0xc1, 0x11, 0x31, 0x10, 0x10, 0x10, 0x00, 0x10}, /* r g b 101a10 */

        {0xa1, 0x11, 0x01, 0x08, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x20, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x21, 0xd0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x22, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x23, 0x09, 0x00, 0x00, 0x00, 0x10},

        {0xa1, 0x11, 0x01, 0x08, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x20, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x21, 0xd0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x22, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x23, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x11, 0x01, 0x18, 0x00, 0x00, 0x00, 0x10},
                                                        /* set sensor clock */
        {}
};
static const u8 mi0360_sensor_init[][8] = {
        {0xb1, 0x5d, 0x07, 0x00, 0x02, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x0d, 0x00, 0x01, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x01, 0x00, 0x08, 0x00, 0x16, 0x10},
        {0xd1, 0x5d, 0x03, 0x01, 0xe2, 0x02, 0x82, 0x10},
        {0xd1, 0x5d, 0x05, 0x00, 0x09, 0x00, 0x53, 0x10},
        {0xb1, 0x5d, 0x0d, 0x00, 0x02, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x14, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x16, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x18, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x32, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x20, 0x91, 0x01, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x22, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x24, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x26, 0x00, 0x00, 0x00, 0x24, 0x10},
        {0xd1, 0x5d, 0x2f, 0xf7, 0xb0, 0x00, 0x04, 0x10},
        {0xd1, 0x5d, 0x31, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x33, 0x00, 0x00, 0x01, 0x00, 0x10},
        {0xb1, 0x5d, 0x3d, 0x06, 0x8f, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x40, 0x01, 0xe0, 0x00, 0xd1, 0x10},
        {0xb1, 0x5d, 0x44, 0x00, 0x82, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x58, 0x00, 0x78, 0x00, 0x43, 0x10},
        {0xd1, 0x5d, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x5e, 0x00, 0x00, 0xa3, 0x1d, 0x10},
        {0xb1, 0x5d, 0x62, 0x04, 0x11, 0x00, 0x00, 0x10},

        {0xb1, 0x5d, 0x20, 0x91, 0x01, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x20, 0x11, 0x01, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x09, 0x00, 0x64, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x2b, 0x00, 0xa0, 0x00, 0xb0, 0x10},
        {0xd1, 0x5d, 0x2d, 0x00, 0xa0, 0x00, 0xa0, 0x10},

        {0xb1, 0x5d, 0x0a, 0x00, 0x02, 0x00, 0x00, 0x10}, /* sensor clck ?2 */
        {0xb1, 0x5d, 0x06, 0x00, 0x30, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x05, 0x00, 0x0a, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x09, 0x02, 0x35, 0x00, 0x00, 0x10}, /* exposure 2 */

        {0xd1, 0x5d, 0x2b, 0x00, 0xb9, 0x00, 0xe3, 0x10},
        {0xd1, 0x5d, 0x2d, 0x00, 0x5f, 0x00, 0xb9, 0x10}, /* 42 */
/*      {0xb1, 0x5d, 0x35, 0x00, 0x67, 0x00, 0x00, 0x10}, * gain orig */
/*      {0xb1, 0x5d, 0x35, 0x00, 0x20, 0x00, 0x00, 0x10}, * gain */
        {0xb1, 0x5d, 0x07, 0x00, 0x03, 0x00, 0x00, 0x10}, /* update */
        {0xb1, 0x5d, 0x07, 0x00, 0x02, 0x00, 0x00, 0x10}, /* sensor on */
        {}
};
static const u8 mi0360b_sensor_init[][8] = {
        {0xb1, 0x5d, 0x07, 0x00, 0x02, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x0d, 0x00, 0x01, 0x00, 0x00, 0x10},
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /*delay 20ms*/
        {0xb1, 0x5d, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /*delay 20ms*/
        {0xd1, 0x5d, 0x01, 0x00, 0x08, 0x00, 0x16, 0x10},
        {0xd1, 0x5d, 0x03, 0x01, 0xe2, 0x02, 0x82, 0x10},
        {0xd1, 0x5d, 0x05, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x0d, 0x00, 0x02, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x12, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x14, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x16, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x18, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x32, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x20, 0x11, 0x01, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x22, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x24, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x26, 0x00, 0x00, 0x00, 0x24, 0x10},
        {0xd1, 0x5d, 0x2f, 0xf7, 0xb0, 0x00, 0x04, 0x10},
        {0xd1, 0x5d, 0x31, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x33, 0x00, 0x00, 0x01, 0x00, 0x10},
        {0xb1, 0x5d, 0x3d, 0x06, 0x8f, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x40, 0x01, 0xe0, 0x00, 0xd1, 0x10},
        {0xb1, 0x5d, 0x44, 0x00, 0x82, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x58, 0x00, 0x78, 0x00, 0x43, 0x10},
        {0xd1, 0x5d, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x5e, 0x00, 0x00, 0xa3, 0x1d, 0x10},
        {0xb1, 0x5d, 0x62, 0x04, 0x11, 0x00, 0x00, 0x10},

        {0xb1, 0x5d, 0x20, 0x11, 0x01, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x20, 0x11, 0x01, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x09, 0x00, 0x64, 0x00, 0x00, 0x10},
        {0xd1, 0x5d, 0x2b, 0x00, 0x33, 0x00, 0xa0, 0x10},
        {0xd1, 0x5d, 0x2d, 0x00, 0xa0, 0x00, 0x33, 0x10},
        {}
};
static const u8 mi0360b_sensor_param1[][8] = {
        {0xb1, 0x5d, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x06, 0x00, 0x53, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x05, 0x00, 0x09, 0x00, 0x00, 0x10},
        {0xb1, 0x5d, 0x09, 0x02, 0x35, 0x00, 0x00, 0x10}, /* exposure 2 */

        {0xd1, 0x5d, 0x2b, 0x00, 0xd1, 0x01, 0xc9, 0x10},
        {0xd1, 0x5d, 0x2d, 0x00, 0xed, 0x00, 0xd1, 0x10},
        {0xb1, 0x5d, 0x07, 0x00, 0x03, 0x00, 0x00, 0x10}, /* update */
        {0xb1, 0x5d, 0x07, 0x00, 0x02, 0x00, 0x00, 0x10}, /* sensor on */
        {}
};
static const u8 mo4000_sensor_init[][8] = {
        {0xa1, 0x21, 0x01, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x02, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x03, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x04, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x05, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x05, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x06, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x06, 0x81, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x11, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x11, 0x20, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x11, 0x30, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x11, 0x38, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x11, 0x38, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x12, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x0f, 0x20, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x10, 0x20, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x11, 0x38, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 mt9v111_sensor_init[][8] = {
        {0xb1, 0x5c, 0x0d, 0x00, 0x01, 0x00, 0x00, 0x10}, /* reset? */
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 20ms */
        {0xb1, 0x5c, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x5c, 0x01, 0x00, 0x01, 0x00, 0x00, 0x10}, /* IFP select */
        {0xb1, 0x5c, 0x08, 0x04, 0x80, 0x00, 0x00, 0x10}, /* output fmt ctrl */
        {0xb1, 0x5c, 0x06, 0x00, 0x00, 0x00, 0x00, 0x10}, /* op mode ctrl */
        {0xb1, 0x5c, 0x01, 0x00, 0x04, 0x00, 0x00, 0x10}, /* sensor select */
        {0xb1, 0x5c, 0x08, 0x00, 0x08, 0x00, 0x00, 0x10}, /* row start */
        {0xb1, 0x5c, 0x02, 0x00, 0x16, 0x00, 0x00, 0x10}, /* col start */
        {0xb1, 0x5c, 0x03, 0x01, 0xe7, 0x00, 0x00, 0x10}, /* window height */
        {0xb1, 0x5c, 0x04, 0x02, 0x87, 0x00, 0x00, 0x10}, /* window width */
        {0xb1, 0x5c, 0x07, 0x30, 0x02, 0x00, 0x00, 0x10}, /* output ctrl */
        {0xb1, 0x5c, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x10}, /* shutter delay */
        {0xb1, 0x5c, 0x12, 0x00, 0xb0, 0x00, 0x00, 0x10}, /* zoom col start */
        {0xb1, 0x5c, 0x13, 0x00, 0x7c, 0x00, 0x00, 0x10}, /* zoom row start */
        {0xb1, 0x5c, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x10}, /* digital zoom */
        {0xb1, 0x5c, 0x20, 0x00, 0x00, 0x00, 0x00, 0x10}, /* read mode */
        {0xb1, 0x5c, 0x20, 0x00, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 mt9v111_sensor_param1[][8] = {
        {0xd1, 0x5c, 0x2b, 0x00, 0x33, 0x00, 0xad, 0x10}, /* G1 and B gains */
        {0xd1, 0x5c, 0x2d, 0x00, 0xad, 0x00, 0x33, 0x10}, /* R and G2 gains */
        {0xb1, 0x5c, 0x06, 0x00, 0x40, 0x00, 0x00, 0x10}, /* vert blanking */
        {0xb1, 0x5c, 0x05, 0x00, 0x09, 0x00, 0x00, 0x10}, /* horiz blanking */
        {0xb1, 0x5c, 0x35, 0x01, 0xc0, 0x00, 0x00, 0x10}, /* global gain */
        {}
};
static const u8 om6802_init0[2][8] = {
/*fixme: variable*/
        {0xa0, 0x34, 0x29, 0x0e, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x34, 0x23, 0xb0, 0x00, 0x00, 0x00, 0x10},
};
static const u8 om6802_sensor_init[][8] = {
        {0xa0, 0x34, 0xdf, 0x6d, 0x00, 0x00, 0x00, 0x10},
                                                /* factory mode */
        {0xa0, 0x34, 0xdd, 0x18, 0x00, 0x00, 0x00, 0x10},
                                                /* output raw RGB */
        {0xa0, 0x34, 0x5a, 0xc0, 0x00, 0x00, 0x00, 0x10},
/*      {0xa0, 0x34, 0xfb, 0x11, 0x00, 0x00, 0x00, 0x10}, */
        {0xa0, 0x34, 0xf0, 0x04, 0x00, 0x00, 0x00, 0x10},
                /* auto-exposure speed (0) / white balance mode (auto RGB) */
/*      {0xa0, 0x34, 0xf1, 0x02, 0x00, 0x00, 0x00, 0x10},
                                                         * set color mode */
/*      {0xa0, 0x34, 0xfe, 0x5b, 0x00, 0x00, 0x00, 0x10},
                                                 * max AGC value in AE */
/*      {0xa0, 0x34, 0xe5, 0x00, 0x00, 0x00, 0x00, 0x10},
                                                         * preset AGC */
/*      {0xa0, 0x34, 0xe6, 0x00, 0x00, 0x00, 0x00, 0x10},
                                                 * preset brightness */
/*      {0xa0, 0x34, 0xe7, 0x00, 0x00, 0x00, 0x00, 0x10},
                                                         * preset contrast */
/*      {0xa0, 0x34, 0xe8, 0x31, 0x00, 0x00, 0x00, 0x10},
                                                         * preset gamma */
        {0xa0, 0x34, 0xe9, 0x0f, 0x00, 0x00, 0x00, 0x10},
                                /* luminance mode (0x4f -> AutoExpo on) */
        {0xa0, 0x34, 0xe4, 0xff, 0x00, 0x00, 0x00, 0x10},
                                                        /* preset shutter */
/*      {0xa0, 0x34, 0xef, 0x00, 0x00, 0x00, 0x00, 0x10},
                                                         * auto frame rate */
/*      {0xa0, 0x34, 0xfb, 0xee, 0x00, 0x00, 0x00, 0x10}, */
        {0xa0, 0x34, 0x5d, 0x80, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 om6802_sensor_param1[][8] = {
        {0xa0, 0x34, 0x71, 0x84, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x34, 0x72, 0x05, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x34, 0x68, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x34, 0x69, 0x01, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 ov7630_sensor_init[][8] = {
        {0xa1, 0x21, 0x76, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x12, 0xc8, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 20ms */
        {0xa1, 0x21, 0x12, 0x48, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x12, 0xc8, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 20ms */
        {0xa1, 0x21, 0x12, 0x48, 0x00, 0x00, 0x00, 0x10},
/* win: i2c_r from 00 to 80 */
        {0xd1, 0x21, 0x03, 0x80, 0x10, 0x20, 0x80, 0x10},
        {0xb1, 0x21, 0x0c, 0x20, 0x20, 0x00, 0x00, 0x10},
/* HDG: 0x11 was 0x00 change to 0x01 for better exposure (15 fps instead of 30)
        0x13 was 0xc0 change to 0xc3 for auto gain and exposure */
        {0xd1, 0x21, 0x11, 0x01, 0x48, 0xc3, 0x00, 0x10},
        {0xb1, 0x21, 0x15, 0x80, 0x03, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x17, 0x1b, 0xbd, 0x05, 0xf6, 0x10},
        {0xa1, 0x21, 0x1b, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x1f, 0x00, 0x80, 0x80, 0x80, 0x10},
        {0xd1, 0x21, 0x23, 0xde, 0x10, 0x8a, 0xa0, 0x10},
        {0xc1, 0x21, 0x27, 0xca, 0xa2, 0x74, 0x00, 0x10},
        {0xd1, 0x21, 0x2a, 0x88, 0x00, 0x88, 0x01, 0x10},
        {0xc1, 0x21, 0x2e, 0x80, 0x00, 0x18, 0x00, 0x10},
        {0xa1, 0x21, 0x21, 0x08, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x22, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x21, 0x32, 0xc2, 0x08, 0x00, 0x00, 0x10},
        {0xb1, 0x21, 0x4c, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x60, 0x05, 0x40, 0x12, 0x57, 0x10},
        {0xa1, 0x21, 0x64, 0x73, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x65, 0x00, 0x55, 0x01, 0xac, 0x10},
        {0xa1, 0x21, 0x69, 0x38, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x6f, 0x1f, 0x01, 0x00, 0x10, 0x10},
        {0xd1, 0x21, 0x73, 0x50, 0x20, 0x02, 0x01, 0x10},
        {0xd1, 0x21, 0x77, 0xf3, 0x90, 0x98, 0x98, 0x10},
        {0xc1, 0x21, 0x7b, 0x00, 0x4c, 0xf7, 0x00, 0x10},
        {0xd1, 0x21, 0x17, 0x1b, 0xbd, 0x05, 0xf6, 0x10},
        {0xa1, 0x21, 0x1b, 0x04, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 ov7630_sensor_param1[][8] = {
        {0xa1, 0x21, 0x12, 0x48, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x12, 0x48, 0x00, 0x00, 0x00, 0x10},
/*fixme: + 0x12, 0x04*/
/*      {0xa1, 0x21, 0x75, 0x82, 0x00, 0x00, 0x00, 0x10},  * COMN
                                                         * set by setvflip */
        {0xa1, 0x21, 0x10, 0x32, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x21, 0x01, 0x80, 0x80, 0x00, 0x00, 0x10},
/* */
/*      {0xa1, 0x21, 0x2a, 0x88, 0x00, 0x00, 0x00, 0x10}, * set by setfreq */
/*      {0xa1, 0x21, 0x2b, 0x34, 0x00, 0x00, 0x00, 0x10}, * set by setfreq */
/* */
        {0xa1, 0x21, 0x10, 0x83, 0x00, 0x00, 0x00, 0x10},
/*      {0xb1, 0x21, 0x01, 0x88, 0x70, 0x00, 0x00, 0x10}, */
        {}
};

static const u8 ov7648_sensor_init[][8] = {
        {0xa1, 0x21, 0x76, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10},       /* reset */
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 20ms */
        {0xa1, 0x21, 0x12, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x03, 0xa4, 0x30, 0x88, 0x00, 0x10},
        {0xb1, 0x21, 0x11, 0x80, 0x08, 0x00, 0x00, 0x10},
        {0xc1, 0x21, 0x13, 0xa0, 0x04, 0x84, 0x00, 0x10},
        {0xd1, 0x21, 0x17, 0x1a, 0x02, 0xba, 0xf4, 0x10},
        {0xa1, 0x21, 0x1b, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x1f, 0x41, 0xc0, 0x80, 0x80, 0x10},
        {0xd1, 0x21, 0x23, 0xde, 0xa0, 0x80, 0x32, 0x10},
        {0xd1, 0x21, 0x27, 0xfe, 0xa0, 0x00, 0x91, 0x10},
        {0xd1, 0x21, 0x2b, 0x00, 0x88, 0x85, 0x80, 0x10},
        {0xc1, 0x21, 0x2f, 0x9c, 0x00, 0xc4, 0x00, 0x10},
        {0xd1, 0x21, 0x60, 0xa6, 0x60, 0x88, 0x12, 0x10},
        {0xd1, 0x21, 0x64, 0x88, 0x00, 0x00, 0x94, 0x10},
        {0xd1, 0x21, 0x68, 0x7a, 0x0c, 0x00, 0x00, 0x10},
        {0xd1, 0x21, 0x6c, 0x11, 0x33, 0x22, 0x00, 0x10},
        {0xd1, 0x21, 0x70, 0x11, 0x00, 0x10, 0x50, 0x10},
        {0xd1, 0x21, 0x74, 0x20, 0x06, 0x00, 0xb5, 0x10},
        {0xd1, 0x21, 0x78, 0x8a, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x21, 0x7c, 0x00, 0x43, 0x00, 0x00, 0x10},

        {0xd1, 0x21, 0x21, 0x86, 0x00, 0xde, 0xa0, 0x10},
/*      {0xd1, 0x21, 0x25, 0x80, 0x32, 0xfe, 0xa0, 0x10}, jfm done */
/*      {0xd1, 0x21, 0x29, 0x00, 0x91, 0x00, 0x88, 0x10}, jfm done */
/*      {0xb1, 0x21, 0x2d, 0x85, 0x00, 0x00, 0x00, 0x10}, set by setfreq */
        {}
};
static const u8 ov7648_sensor_param1[][8] = {
/*      {0xa1, 0x21, 0x12, 0x08, 0x00, 0x00, 0x00, 0x10}, jfm done */
/*      {0xa1, 0x21, 0x75, 0x06, 0x00, 0x00, 0x00, 0x10},   * COMN
                                                         * set by setvflip */
        {0xa1, 0x21, 0x19, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x10, 0x32, 0x00, 0x00, 0x00, 0x10},
/*      {0xa1, 0x21, 0x16, 0x00, 0x00, 0x00, 0x00, 0x10}, jfm done */
/*      {0xa1, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},  * GAIN - def */
/*      {0xb1, 0x21, 0x01, 0x6c, 0x6c, 0x00, 0x00, 0x10},  * B R - def: 80 */
/*...*/
        {0xa1, 0x21, 0x11, 0x81, 0x00, 0x00, 0x00, 0x10}, /* CLKRC */
/*      {0xa1, 0x21, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x10}, jfm done */
/*      {0xa1, 0x21, 0x16, 0x00, 0x00, 0x00, 0x00, 0x10}, jfm done */
/*      {0xa1, 0x21, 0x2a, 0x91, 0x00, 0x00, 0x00, 0x10}, jfm done */
/*      {0xa1, 0x21, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10}, jfm done */
/*      {0xb1, 0x21, 0x01, 0x64, 0x84, 0x00, 0x00, 0x10},  * B R - def: 80 */

        {}
};

static const u8 ov7660_sensor_init[][8] = {
        {0xa1, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10}, /* reset SCCB */
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 20ms */
        {0xa1, 0x21, 0x12, 0x05, 0x00, 0x00, 0x00, 0x10},
                                                /* Outformat = rawRGB */
        {0xa1, 0x21, 0x13, 0xb8, 0x00, 0x00, 0x00, 0x10}, /* init COM8 */
        {0xd1, 0x21, 0x00, 0x01, 0x74, 0x92, 0x00, 0x10},
                                                /* GAIN BLUE RED VREF */
        {0xd1, 0x21, 0x04, 0x00, 0x7d, 0x62, 0x00, 0x10},
                                                /* COM 1 BAVE GEAVE AECHH */
        {0xb1, 0x21, 0x08, 0x83, 0x01, 0x00, 0x00, 0x10}, /* RAVE COM2 */
        {0xd1, 0x21, 0x0c, 0x00, 0x08, 0x04, 0x4f, 0x10}, /* COM 3 4 5 6 */
        {0xd1, 0x21, 0x10, 0x7f, 0x40, 0x05, 0xff, 0x10},
                                                /* AECH CLKRC COM7 COM8 */
        {0xc1, 0x21, 0x14, 0x2c, 0x00, 0x02, 0x00, 0x10}, /* COM9 COM10 */
        {0xd1, 0x21, 0x17, 0x10, 0x60, 0x02, 0x7b, 0x10},
                                                /* HSTART HSTOP VSTRT VSTOP */
        {0xa1, 0x21, 0x1b, 0x02, 0x00, 0x00, 0x00, 0x10}, /* PSHFT */
        {0xb1, 0x21, 0x1e, 0x01, 0x0e, 0x00, 0x00, 0x10}, /* MVFP LAEC */
        {0xd1, 0x21, 0x20, 0x07, 0x07, 0x07, 0x07, 0x10},
                                        /* BOS GBOS GROS ROS (BGGR offset) */
/*      {0xd1, 0x21, 0x24, 0x68, 0x58, 0xd4, 0x80, 0x10}, */
        {0xd1, 0x21, 0x24, 0x78, 0x68, 0xd4, 0x80, 0x10},
                                                /* AEW AEB VPT BBIAS */
        {0xd1, 0x21, 0x28, 0x80, 0x30, 0x00, 0x00, 0x10},
                                                /* GbBIAS RSVD EXHCH EXHCL */
        {0xd1, 0x21, 0x2c, 0x80, 0x00, 0x00, 0x62, 0x10},
                                                /* RBIAS ADVFL ASDVFH YAVE */
        {0xc1, 0x21, 0x30, 0x08, 0x30, 0xb4, 0x00, 0x10},
                                                /* HSYST HSYEN HREF */
        {0xd1, 0x21, 0x33, 0x00, 0x07, 0x84, 0x00, 0x10}, /* reserved */
        {0xd1, 0x21, 0x37, 0x0c, 0x02, 0x43, 0x00, 0x10},
                                                /* ADC ACOM OFON TSLB */
        {0xd1, 0x21, 0x3b, 0x02, 0x6c, 0x19, 0x0e, 0x10},
                                                /* COM11 COM12 COM13 COM14 */
        {0xd1, 0x21, 0x3f, 0x41, 0xc1, 0x22, 0x08, 0x10},
                                                /* EDGE COM15 COM16 COM17 */
        {0xd1, 0x21, 0x43, 0xf0, 0x10, 0x78, 0xa8, 0x10}, /* reserved */
        {0xd1, 0x21, 0x47, 0x60, 0x80, 0x00, 0x00, 0x10}, /* reserved */
        {0xd1, 0x21, 0x4b, 0x00, 0x00, 0x00, 0x00, 0x10}, /* reserved */
        {0xd1, 0x21, 0x4f, 0x46, 0x36, 0x0f, 0x17, 0x10}, /* MTX 1 2 3 4 */
        {0xd1, 0x21, 0x53, 0x7f, 0x96, 0x40, 0x40, 0x10}, /* MTX 5 6 7 8 */
        {0xb1, 0x21, 0x57, 0x40, 0x0f, 0x00, 0x00, 0x10}, /* MTX9 MTXS */
        {0xd1, 0x21, 0x59, 0xba, 0x9a, 0x22, 0xb9, 0x10}, /* reserved */
        {0xd1, 0x21, 0x5d, 0x9b, 0x10, 0xf0, 0x05, 0x10}, /* reserved */
        {0xa1, 0x21, 0x61, 0x60, 0x00, 0x00, 0x00, 0x10}, /* reserved */
        {0xd1, 0x21, 0x62, 0x00, 0x00, 0x50, 0x30, 0x10},
                                                /* LCC1 LCC2 LCC3 LCC4 */
        {0xa1, 0x21, 0x66, 0x00, 0x00, 0x00, 0x00, 0x10}, /* LCC5 */
        {0xd1, 0x21, 0x67, 0x80, 0x7a, 0x90, 0x80, 0x10}, /* MANU */
        {0xa1, 0x21, 0x6b, 0x0a, 0x00, 0x00, 0x00, 0x10},
                                        /* band gap reference [0:3] DBLV */
        {0xd1, 0x21, 0x6c, 0x30, 0x48, 0x80, 0x74, 0x10}, /* gamma curve */
        {0xd1, 0x21, 0x70, 0x64, 0x60, 0x5c, 0x58, 0x10}, /* gamma curve */
        {0xd1, 0x21, 0x74, 0x54, 0x4c, 0x40, 0x38, 0x10}, /* gamma curve */
        {0xd1, 0x21, 0x78, 0x34, 0x30, 0x2f, 0x2b, 0x10}, /* gamma curve */
        {0xd1, 0x21, 0x7c, 0x03, 0x07, 0x17, 0x34, 0x10}, /* gamma curve */
        {0xd1, 0x21, 0x80, 0x41, 0x4d, 0x58, 0x63, 0x10}, /* gamma curve */
        {0xd1, 0x21, 0x84, 0x6e, 0x77, 0x87, 0x95, 0x10}, /* gamma curve */
        {0xc1, 0x21, 0x88, 0xaf, 0xc7, 0xdf, 0x00, 0x10}, /* gamma curve */
        {0xc1, 0x21, 0x8b, 0x99, 0x99, 0xcf, 0x00, 0x10}, /* reserved */
        {0xb1, 0x21, 0x92, 0x00, 0x00, 0x00, 0x00, 0x10}, /* DM_LNL/H */
/* not in all ms-win traces*/
        {0xa1, 0x21, 0xa1, 0x00, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 ov7660_sensor_param1[][8] = {
        {0xa1, 0x21, 0x1e, 0x01, 0x00, 0x00, 0x00, 0x10}, /* MVFP */
                                                /* bits[3..0]reserved */
        {0xa1, 0x21, 0x1e, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x03, 0x00, 0x00, 0x00, 0x00, 0x10},
                                                /* VREF vertical frame ctrl */
        {0xa1, 0x21, 0x03, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x10, 0x20, 0x00, 0x00, 0x00, 0x10}, /* AECH 0x20 */
        {0xa1, 0x21, 0x2d, 0x00, 0x00, 0x00, 0x00, 0x10}, /* ADVFL */
        {0xa1, 0x21, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x10}, /* ADVFH */
        {0xa1, 0x21, 0x00, 0x1f, 0x00, 0x00, 0x00, 0x10}, /* GAIN */
/*      {0xb1, 0x21, 0x01, 0x78, 0x78, 0x00, 0x00, 0x10}, * BLUE */
/****** (some exchanges in the win trace) ******/
/*fixme:param2*/
        {0xa1, 0x21, 0x93, 0x00, 0x00, 0x00, 0x00, 0x10},/* dummy line hight */
        {0xa1, 0x21, 0x92, 0x25, 0x00, 0x00, 0x00, 0x10}, /* dummy line low */
        {0xa1, 0x21, 0x2a, 0x00, 0x00, 0x00, 0x00, 0x10}, /* EXHCH */
        {0xa1, 0x21, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10}, /* EXHCL */
/*      {0xa1, 0x21, 0x02, 0x90, 0x00, 0x00, 0x00, 0x10},  * RED */
/****** (some exchanges in the win trace) ******/
/******!! startsensor KO if changed !!****/
/*fixme: param3*/
        {0xa1, 0x21, 0x93, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x92, 0xff, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x2a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x2b, 0xc3, 0x00, 0x00, 0x00, 0x10},
        {}
};

static const u8 po1030_sensor_init[][8] = {
/* the sensor registers are described in m5602/m5602_po1030.h */
        {0xa1, 0x6e, 0x3f, 0x20, 0x00, 0x00, 0x00, 0x10}, /* sensor reset */
        {DELAY, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 20ms */
        {0xa1, 0x6e, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x04, 0x02, 0xb1, 0x02, 0x39, 0x10},
        {0xd1, 0x6e, 0x08, 0x00, 0x01, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x0c, 0x02, 0x7f, 0x01, 0xe0, 0x10},
        {0xd1, 0x6e, 0x12, 0x03, 0x02, 0x00, 0x03, 0x10},
        {0xd1, 0x6e, 0x16, 0x85, 0x40, 0x4a, 0x40, 0x10}, /* r/g1/b/g2 gains */
        {0xc1, 0x6e, 0x1a, 0x00, 0x80, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x1d, 0x08, 0x03, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x23, 0x00, 0xb0, 0x00, 0x94, 0x10},
        {0xd1, 0x6e, 0x27, 0x58, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x6e, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x2d, 0x14, 0x35, 0x61, 0x84, 0x10}, /* gamma corr */
        {0xd1, 0x6e, 0x31, 0xa2, 0xbd, 0xd8, 0xff, 0x10},
        {0xd1, 0x6e, 0x35, 0x06, 0x1e, 0x12, 0x02, 0x10}, /* color matrix */
        {0xd1, 0x6e, 0x39, 0xaa, 0x53, 0x37, 0xd5, 0x10},
        {0xa1, 0x6e, 0x3d, 0xf2, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x3e, 0x00, 0x00, 0x80, 0x03, 0x10},
        {0xd1, 0x6e, 0x42, 0x03, 0x00, 0x00, 0x00, 0x10},
        {0xc1, 0x6e, 0x46, 0x00, 0x80, 0x80, 0x00, 0x10},
        {0xd1, 0x6e, 0x4b, 0x02, 0xef, 0x08, 0xcd, 0x10},
        {0xd1, 0x6e, 0x4f, 0x00, 0xd0, 0x00, 0xa0, 0x10},
        {0xd1, 0x6e, 0x53, 0x01, 0xaa, 0x01, 0x40, 0x10},
        {0xd1, 0x6e, 0x5a, 0x50, 0x04, 0x30, 0x03, 0x10}, /* raw rgb bayer */
        {0xa1, 0x6e, 0x5e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x5f, 0x10, 0x40, 0xff, 0x00, 0x10},

        {0xd1, 0x6e, 0x63, 0x40, 0x40, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x6f, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xc1, 0x6e, 0x73, 0x10, 0x80, 0xeb, 0x00, 0x10},
        {}
};
static const u8 po1030_sensor_param1[][8] = {
/* from ms-win traces - these values change with auto gain/expo/wb.. */
        {0xa1, 0x6e, 0x1e, 0x03, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x1e, 0x03, 0x00, 0x00, 0x00, 0x10},
/* mean values */
        {0xc1, 0x6e, 0x1a, 0x02, 0xd4, 0xa4, 0x00, 0x10}, /* integlines */
        {0xa1, 0x6e, 0x15, 0x04, 0x00, 0x00, 0x00, 0x10}, /* global gain */
        {0xc1, 0x6e, 0x16, 0x40, 0x40, 0x40, 0x00, 0x10}, /* r/g1/b gains */

        {0xa1, 0x6e, 0x1d, 0x08, 0x00, 0x00, 0x00, 0x10}, /* control1 */
        {0xa1, 0x6e, 0x06, 0x02, 0x00, 0x00, 0x00, 0x10}, /* frameheight */
        {0xa1, 0x6e, 0x07, 0xd5, 0x00, 0x00, 0x00, 0x10},
/*      {0xc1, 0x6e, 0x16, 0x49, 0x40, 0x45, 0x00, 0x10}, */
        {}
};

static const u8 po2030n_sensor_init[][8] = {
        {0xa1, 0x6e, 0x1e, 0x1a, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x1f, 0x99, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 10ms */
        {0xa1, 0x6e, 0x1e, 0x0a, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x1f, 0x19, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 10ms */
        {0xa1, 0x6e, 0x20, 0x44, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x04, 0x03, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x05, 0x70, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x06, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x07, 0x25, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x08, 0x00, 0xd0, 0x00, 0x08, 0x10},
        {0xd1, 0x6e, 0x0c, 0x03, 0x50, 0x01, 0xe8, 0x10},
        {0xd1, 0x6e, 0x1d, 0x20, 0x0a, 0x19, 0x44, 0x10},
        {0xd1, 0x6e, 0x21, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x25, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x29, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x2d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x31, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x35, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x39, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x41, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x45, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x49, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x4d, 0x00, 0x00, 0x00, 0xed, 0x10},
        {0xd1, 0x6e, 0x51, 0x17, 0x4a, 0x2f, 0xc0, 0x10},
        {0xd1, 0x6e, 0x55, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x59, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x5d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x61, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x65, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x69, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x6d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x71, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x75, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x79, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x7d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x81, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x85, 0x00, 0x00, 0x00, 0x08, 0x10},
        {0xd1, 0x6e, 0x89, 0x01, 0xe8, 0x00, 0x01, 0x10},
        {0xa1, 0x6e, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x21, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x25, 0x00, 0x00, 0x00, 0x01, 0x10},
        {0xd1, 0x6e, 0x29, 0xe6, 0x00, 0xbd, 0x03, 0x10},
        {0xd1, 0x6e, 0x2d, 0x41, 0x38, 0x68, 0x40, 0x10},
        {0xd1, 0x6e, 0x31, 0x2b, 0x00, 0x36, 0x00, 0x10},
        {0xd1, 0x6e, 0x35, 0x30, 0x30, 0x08, 0x00, 0x10},
        {0xd1, 0x6e, 0x39, 0x00, 0x00, 0x33, 0x06, 0x10},
        {0xb1, 0x6e, 0x3d, 0x06, 0x02, 0x00, 0x00, 0x10},
        {}
};
static const u8 po2030n_sensor_param1[][8] = {

        {0xa1, 0x6e, 0x1a, 0x01, 0x00, 0x00, 0x00, 0x10},
        {DELAY, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 8ms */
        {0xa1, 0x6e, 0x1b, 0xf4, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x15, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xd1, 0x6e, 0x16, 0x40, 0x40, 0x40, 0x40, 0x10}, /* RGBG gains */
/*param2*/
        {0xa1, 0x6e, 0x1d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x04, 0x03, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x05, 0x6f, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x06, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x6e, 0x07, 0x25, 0x00, 0x00, 0x00, 0x10},
        {}
};

static const u8 soi768_sensor_init[][8] = {
        {0xa1, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10}, /* reset */
        {DELAY, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* delay 96ms */
        {0xa1, 0x21, 0x12, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x13, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x0f, 0x03, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x19, 0x00, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 soi768_sensor_param1[][8] = {
        {0xa1, 0x21, 0x10, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x2d, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x21, 0x01, 0x7f, 0x7f, 0x00, 0x00, 0x10},
/* */
/*      {0xa1, 0x21, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x10}, */
/*      {0xa1, 0x21, 0x2d, 0x25, 0x00, 0x00, 0x00, 0x10}, */
        {0xa1, 0x21, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10},
/*      {0xb1, 0x21, 0x2d, 0x00, 0x00, 0x00, 0x00, 0x10}, */
        {0xa1, 0x21, 0x02, 0x8d, 0x00, 0x00, 0x00, 0x10},
/* the next sequence should be used for auto gain */
        {0xa1, 0x21, 0x00, 0x07, 0x00, 0x00, 0x00, 0x10},
                        /* global gain ? : 07 - change with 0x15 at the end */
        {0xa1, 0x21, 0x10, 0x3f, 0x00, 0x00, 0x00, 0x10}, /* ???? : 063f */
        {0xa1, 0x21, 0x04, 0x06, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x21, 0x2d, 0x63, 0x03, 0x00, 0x00, 0x10},
                        /* exposure ? : 0200 - change with 0x1e at the end */
        {}
};

static const u8 sp80708_sensor_init[][8] = {
        {0xa1, 0x18, 0x06, 0xf9, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x09, 0x1f, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x0d, 0xc0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x0c, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x0f, 0x0f, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x10, 0x40, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x11, 0x4e, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x12, 0x53, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x15, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x19, 0x18, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x1a, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x1b, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x1c, 0x28, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x1d, 0x02, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x1e, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x26, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x27, 0x1e, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x28, 0x5a, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x29, 0x28, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x2a, 0x78, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x2b, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x2c, 0xf7, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x2d, 0x2d, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x2e, 0xd5, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x39, 0x42, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x3a, 0x67, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x3b, 0x87, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x3c, 0xa3, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x3d, 0xb0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x3e, 0xbc, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x3f, 0xc8, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x40, 0xd4, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x41, 0xdf, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x42, 0xea, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x43, 0xf5, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x45, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x46, 0x60, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x47, 0x50, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x48, 0x30, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x49, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x4d, 0xae, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x4e, 0x03, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x4f, 0x66, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x50, 0x1c, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x44, 0x10, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x4a, 0x30, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x51, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x52, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x53, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x54, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x55, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x56, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x57, 0xe0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x58, 0xc0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x59, 0xab, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x5a, 0xa0, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x5b, 0x99, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x5c, 0x90, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x5e, 0x24, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x60, 0x00, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x61, 0x73, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x63, 0x42, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x64, 0x42, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x65, 0x42, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x66, 0x24, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x67, 0x24, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x68, 0x08, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x2f, 0xc9, 0x00, 0x00, 0x00, 0x10},
        {}
};
static const u8 sp80708_sensor_param1[][8] = {
        {0xa1, 0x18, 0x0c, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x0c, 0x04, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x03, 0x01, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x04, 0xa4, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x14, 0x3f, 0x00, 0x00, 0x00, 0x10},
        {0xa1, 0x18, 0x5d, 0x80, 0x00, 0x00, 0x00, 0x10},
        {0xb1, 0x18, 0x11, 0x40, 0x40, 0x00, 0x00, 0x10},
        {}
};

static const u8 (*sensor_init[])[8] = {
[SENSOR_ADCM1700] =     adcm1700_sensor_init,
[SENSOR_GC0307] =       gc0307_sensor_init,
[SENSOR_HV7131R] =      hv7131r_sensor_init,
[SENSOR_MI0360] =       mi0360_sensor_init,
[SENSOR_MI0360B] =      mi0360b_sensor_init,
[SENSOR_MO4000] =       mo4000_sensor_init,
[SENSOR_MT9V111] =      mt9v111_sensor_init,
[SENSOR_OM6802] =       om6802_sensor_init,
[SENSOR_OV7630] =       ov7630_sensor_init,
[SENSOR_OV7648] =       ov7648_sensor_init,
[SENSOR_OV7660] =       ov7660_sensor_init,
[SENSOR_PO1030] =       po1030_sensor_init,
[SENSOR_PO2030N] =      po2030n_sensor_init,
[SENSOR_SOI768] =       soi768_sensor_init,
[SENSOR_SP80708] =      sp80708_sensor_init,
};

/* read <len> bytes to gspca_dev->usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
                  u16 value, int len)
{
        int ret;

        if (gspca_dev->usb_err < 0)
                return;
        if (len > USB_BUF_SZ) {
                gspca_err(gspca_dev, "reg_r: buffer overflow\n");
                return;
        }

        ret = usb_control_msg(gspca_dev->dev,
                        usb_rcvctrlpipe(gspca_dev->dev, 0),
                        0,
                        USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        value, 0,
                        gspca_dev->usb_buf, len,
                        500);
        gspca_dbg(gspca_dev, D_USBI, "reg_r [%02x] -> %02x\n",
                  value, gspca_dev->usb_buf[0]);
        if (ret < 0) {
                pr_err("reg_r err %d\n", ret);
                gspca_dev->usb_err = ret;
        }
}

static void reg_w1(struct gspca_dev *gspca_dev,
                   u16 value,
                   u8 data)
{
        int ret;

        if (gspca_dev->usb_err < 0)
                return;
        gspca_dbg(gspca_dev, D_USBO, "reg_w1 [%04x] = %02x\n", value, data);
        gspca_dev->usb_buf[0] = data;
        ret = usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        value,
                        0,
                        gspca_dev->usb_buf, 1,
                        500);
        if (ret < 0) {
                pr_err("reg_w1 err %d\n", ret);
                gspca_dev->usb_err = ret;
        }
}
static void reg_w(struct gspca_dev *gspca_dev,
                          u16 value,
                          const u8 *buffer,
                          int len)
{
        int ret;

        if (gspca_dev->usb_err < 0)
                return;
        gspca_dbg(gspca_dev, D_USBO, "reg_w [%04x] = %02x %02x ..\n",
                  value, buffer[0], buffer[1]);

        if (len > USB_BUF_SZ) {
                gspca_err(gspca_dev, "reg_w: buffer overflow\n");
                return;
        }

        memcpy(gspca_dev->usb_buf, buffer, len);
        ret = usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        value, 0,
                        gspca_dev->usb_buf, len,
                        500);
        if (ret < 0) {
                pr_err("reg_w err %d\n", ret);
                gspca_dev->usb_err = ret;
        }
}

/* I2C write 1 byte */
static void i2c_w1(struct gspca_dev *gspca_dev, u8 reg, u8 val)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int ret;

        if (gspca_dev->usb_err < 0)
                return;
        gspca_dbg(gspca_dev, D_USBO, "i2c_w1 [%02x] = %02x\n", reg, val);
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
        case SENSOR_OM6802:
        case SENSOR_GC0307:             /* i2c command = a0 (100 kHz) */
                gspca_dev->usb_buf[0] = 0x80 | (2 << 4);
                break;
        default:                        /* i2c command = a1 (400 kHz) */
                gspca_dev->usb_buf[0] = 0x81 | (2 << 4);
                break;
        }
        gspca_dev->usb_buf[1] = sd->i2c_addr;
        gspca_dev->usb_buf[2] = reg;
        gspca_dev->usb_buf[3] = val;
        gspca_dev->usb_buf[4] = 0;
        gspca_dev->usb_buf[5] = 0;
        gspca_dev->usb_buf[6] = 0;
        gspca_dev->usb_buf[7] = 0x10;
        ret = usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        0x08,                   /* value = i2c */
                        0,
                        gspca_dev->usb_buf, 8,
                        500);
        msleep(2);
        if (ret < 0) {
                pr_err("i2c_w1 err %d\n", ret);
                gspca_dev->usb_err = ret;
        }
}

/* I2C write 8 bytes */
static void i2c_w8(struct gspca_dev *gspca_dev,
                   const u8 *buffer)
{
        int ret;

        if (gspca_dev->usb_err < 0)
                return;
        gspca_dbg(gspca_dev, D_USBO, "i2c_w8 [%02x] = %02x ..\n",
                  buffer[2], buffer[3]);
        memcpy(gspca_dev->usb_buf, buffer, 8);
        ret = usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        0x08, 0,                /* value, index */
                        gspca_dev->usb_buf, 8,
                        500);
        msleep(2);
        if (ret < 0) {
                pr_err("i2c_w8 err %d\n", ret);
                gspca_dev->usb_err = ret;
        }
}

/* sensor read 'len' (1..5) bytes in gspca_dev->usb_buf */
static void i2c_r(struct gspca_dev *gspca_dev, u8 reg, int len)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u8 mode[8];

        switch (sd->sensor) {
        case SENSOR_ADCM1700:
        case SENSOR_OM6802:
        case SENSOR_GC0307:             /* i2c command = a0 (100 kHz) */
                mode[0] = 0x80 | 0x10;
                break;
        default:                        /* i2c command = 91 (400 kHz) */
                mode[0] = 0x81 | 0x10;
                break;
        }
        mode[1] = sd->i2c_addr;
        mode[2] = reg;
        mode[3] = 0;
        mode[4] = 0;
        mode[5] = 0;
        mode[6] = 0;
        mode[7] = 0x10;
        i2c_w8(gspca_dev, mode);
        msleep(2);
        mode[0] = (mode[0] & 0x81) | (len << 4) | 0x02;
        mode[2] = 0;
        i2c_w8(gspca_dev, mode);
        msleep(2);
        reg_r(gspca_dev, 0x0a, 5);
}

static void i2c_w_seq(struct gspca_dev *gspca_dev,
                        const u8 (*data)[8])
{
        while ((*data)[0] != 0) {
                if ((*data)[0] != DELAY)
                        i2c_w8(gspca_dev, *data);
                else
                        msleep((*data)[1]);
                data++;
        }
}

/* check the ID of the hv7131 sensor */
/* this sequence is needed because it activates the sensor */
static void hv7131r_probe(struct gspca_dev *gspca_dev)
{
        i2c_w1(gspca_dev, 0x02, 0);             /* sensor wakeup */
        msleep(10);
        reg_w1(gspca_dev, 0x02, 0x66);          /* Gpio on */
        msleep(10);
        i2c_r(gspca_dev, 0, 5);                 /* read sensor id */
        if (gspca_dev->usb_buf[0] == 0x02       /* chip ID (02 is R) */
            && gspca_dev->usb_buf[1] == 0x09
            && gspca_dev->usb_buf[2] == 0x01) {
                gspca_dbg(gspca_dev, D_PROBE, "Sensor HV7131R found\n");
                return;
        }
        pr_warn("Erroneous HV7131R ID 0x%02x 0x%02x 0x%02x\n",
                gspca_dev->usb_buf[0], gspca_dev->usb_buf[1],
                gspca_dev->usb_buf[2]);
}

static void mi0360_probe(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int i, j;
        u16 val = 0;
        static const u8 probe_tb[][4][8] = {
            {                                   /* mi0360 */
                {0xb0, 0x5d, 0x07, 0x00, 0x02, 0x00, 0x00, 0x10},
                {0x90, 0x5d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
                {0xa2, 0x5d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
                {0xb0, 0x5d, 0x07, 0x00, 0x00, 0x00, 0x00, 0x10}
            },
            {                                   /* mt9v111 */
                {0xb0, 0x5c, 0x01, 0x00, 0x04, 0x00, 0x00, 0x10},
                {0x90, 0x5c, 0x36, 0x00, 0x00, 0x00, 0x00, 0x10},
                {0xa2, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10},
                {}
            },
        };

        for (i = 0; i < ARRAY_SIZE(probe_tb); i++) {
                reg_w1(gspca_dev, 0x17, 0x62);
                reg_w1(gspca_dev, 0x01, 0x08);
                for (j = 0; j < 3; j++)
                        i2c_w8(gspca_dev, probe_tb[i][j]);
                msleep(2);
                reg_r(gspca_dev, 0x0a, 5);
                val = (gspca_dev->usb_buf[3] << 8) | gspca_dev->usb_buf[4];
                if (probe_tb[i][3][0] != 0)
                        i2c_w8(gspca_dev, probe_tb[i][3]);
                reg_w1(gspca_dev, 0x01, 0x29);
                reg_w1(gspca_dev, 0x17, 0x42);
                if (val != 0xffff)
                        break;
        }
        if (gspca_dev->usb_err < 0)
                return;
        switch (val) {
        case 0x8221:
                gspca_dbg(gspca_dev, D_PROBE, "Sensor mi0360b\n");
                sd->sensor = SENSOR_MI0360B;
                break;
        case 0x823a:
                gspca_dbg(gspca_dev, D_PROBE, "Sensor mt9v111\n");
                sd->sensor = SENSOR_MT9V111;
                break;
        case 0x8243:
                gspca_dbg(gspca_dev, D_PROBE, "Sensor mi0360\n");
                break;
        default:
                gspca_dbg(gspca_dev, D_PROBE, "Unknown sensor %04x - forced to mi0360\n",
                          val);
                break;
        }
}

static void ov7630_probe(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u16 val;

        /* check ov76xx */
        reg_w1(gspca_dev, 0x17, 0x62);
        reg_w1(gspca_dev, 0x01, 0x08);
        sd->i2c_addr = 0x21;
        i2c_r(gspca_dev, 0x0a, 2);
        val = (gspca_dev->usb_buf[3] << 8) | gspca_dev->usb_buf[4];
        reg_w1(gspca_dev, 0x01, 0x29);
        reg_w1(gspca_dev, 0x17, 0x42);
        if (gspca_dev->usb_err < 0)
                return;
        if (val == 0x7628) {                    /* soi768 */
                sd->sensor = SENSOR_SOI768;
/*fixme: only valid for 0c45:613e?*/
                gspca_dev->cam.input_flags =
                                V4L2_IN_ST_VFLIP | V4L2_IN_ST_HFLIP;
                gspca_dbg(gspca_dev, D_PROBE, "Sensor soi768\n");
                return;
        }
        gspca_dbg(gspca_dev, D_PROBE, "Sensor ov%04x\n", val);
}

static void ov7648_probe(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u16 val;

        /* check ov76xx */
        reg_w1(gspca_dev, 0x17, 0x62);
        reg_w1(gspca_dev, 0x01, 0x08);
        sd->i2c_addr = 0x21;
        i2c_r(gspca_dev, 0x0a, 2);
        val = (gspca_dev->usb_buf[3] << 8) | gspca_dev->usb_buf[4];
        reg_w1(gspca_dev, 0x01, 0x29);
        reg_w1(gspca_dev, 0x17, 0x42);
        if ((val & 0xff00) == 0x7600) {         /* ov76xx */
                gspca_dbg(gspca_dev, D_PROBE, "Sensor ov%04x\n", val);
                return;
        }

        /* check po1030 */
        reg_w1(gspca_dev, 0x17, 0x62);
        reg_w1(gspca_dev, 0x01, 0x08);
        sd->i2c_addr = 0x6e;
        i2c_r(gspca_dev, 0x00, 2);
        val = (gspca_dev->usb_buf[3] << 8) | gspca_dev->usb_buf[4];
        reg_w1(gspca_dev, 0x01, 0x29);
        reg_w1(gspca_dev, 0x17, 0x42);
        if (gspca_dev->usb_err < 0)
                return;
        if (val == 0x1030) {                    /* po1030 */
                gspca_dbg(gspca_dev, D_PROBE, "Sensor po1030\n");
                sd->sensor = SENSOR_PO1030;
                return;
        }
        pr_err("Unknown sensor %04x\n", val);
}

/* 0c45:6142 sensor may be po2030n, gc0305 or gc0307 */
static void po2030n_probe(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u16 val;

        /* check gc0307 */
        reg_w1(gspca_dev, 0x17, 0x62);
        reg_w1(gspca_dev, 0x01, 0x08);
        reg_w1(gspca_dev, 0x02, 0x22);
        sd->i2c_addr = 0x21;
        i2c_r(gspca_dev, 0x00, 1);
        val = gspca_dev->usb_buf[4];
        reg_w1(gspca_dev, 0x01, 0x29);          /* reset */
        reg_w1(gspca_dev, 0x17, 0x42);
        if (val == 0x99) {                      /* gc0307 (?) */
                gspca_dbg(gspca_dev, D_PROBE, "Sensor gc0307\n");
                sd->sensor = SENSOR_GC0307;
                return;
        }

        /* check po2030n */
        reg_w1(gspca_dev, 0x17, 0x62);
        reg_w1(gspca_dev, 0x01, 0x0a);
        sd->i2c_addr = 0x6e;
        i2c_r(gspca_dev, 0x00, 2);
        val = (gspca_dev->usb_buf[3] << 8) | gspca_dev->usb_buf[4];
        reg_w1(gspca_dev, 0x01, 0x29);
        reg_w1(gspca_dev, 0x17, 0x42);
        if (gspca_dev->usb_err < 0)
                return;
        if (val == 0x2030) {
                gspca_dbg(gspca_dev, D_PROBE, "Sensor po2030n\n");
/*              sd->sensor = SENSOR_PO2030N; */
        } else {
                pr_err("Unknown sensor ID %04x\n", val);
        }
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
                        const struct usb_device_id *id)
{
        struct sd *sd = (struct sd *) gspca_dev;
        struct cam *cam;

        sd->bridge = id->driver_info >> 16;
        sd->sensor = id->driver_info >> 8;
        sd->flags = id->driver_info;

        cam = &gspca_dev->cam;
        if (sd->sensor == SENSOR_ADCM1700) {
                cam->cam_mode = cif_mode;
                cam->nmodes = ARRAY_SIZE(cif_mode);
        } else {
                cam->cam_mode = vga_mode;
                cam->nmodes = ARRAY_SIZE(vga_mode);
        }
        cam->npkt = 24;                 /* 24 packets per ISOC message */

        sd->ag_cnt = -1;
        sd->quality = QUALITY_DEF;

        INIT_WORK(&sd->work, qual_upd);

        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;
        const u8 *sn9c1xx;
        u8 regGpio[] = { 0x29, 0x70 };          /* no audio */
        u8 regF1;

        /* setup a selector by bridge */
        reg_w1(gspca_dev, 0xf1, 0x01);
        reg_r(gspca_dev, 0x00, 1);
        reg_w1(gspca_dev, 0xf1, 0x00);
        reg_r(gspca_dev, 0x00, 1);              /* get sonix chip id */
        regF1 = gspca_dev->usb_buf[0];
        if (gspca_dev->usb_err < 0)
                return gspca_dev->usb_err;
        gspca_dbg(gspca_dev, D_PROBE, "Sonix chip id: %02x\n", regF1);
        if (gspca_dev->audio)
                regGpio[1] |= 0x04;             /* with audio */
        switch (sd->bridge) {
        case BRIDGE_SN9C102P:
        case BRIDGE_SN9C105:
                if (regF1 != 0x11)
                        return -ENODEV;
                break;
        default:
/*      case BRIDGE_SN9C110: */
/*      case BRIDGE_SN9C120: */
                if (regF1 != 0x12)
                        return -ENODEV;
        }

        switch (sd->sensor) {
        case SENSOR_MI0360:
                mi0360_probe(gspca_dev);
                break;
        case SENSOR_OV7630:
                ov7630_probe(gspca_dev);
                break;
        case SENSOR_OV7648:
                ov7648_probe(gspca_dev);
                break;
        case SENSOR_PO2030N:
                po2030n_probe(gspca_dev);
                break;
        }

        switch (sd->bridge) {
        case BRIDGE_SN9C102P:
                reg_w1(gspca_dev, 0x02, regGpio[1]);
                break;
        default:
                reg_w(gspca_dev, 0x01, regGpio, 2);
                break;
        }

        /* Note we do not disable the sensor clock here (power saving mode),
           as that also disables the button on the cam. */
        reg_w1(gspca_dev, 0xf1, 0x00);

        /* set the i2c address */
        sn9c1xx = sn_tb[sd->sensor];
        sd->i2c_addr = sn9c1xx[9];

        return gspca_dev->usb_err;
}

static int sd_s_ctrl(struct v4l2_ctrl *ctrl);

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

/* this function is called at probe time */
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;

        gspca_dev->vdev.ctrl_handler = hdl;
        v4l2_ctrl_handler_init(hdl, 14);

        sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
#define CONTRAST_MAX 127
        sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_CONTRAST, 0, CONTRAST_MAX, 1, 20);
#define COLORS_DEF 25
        sd->saturation = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_SATURATION, 0, 40, 1, COLORS_DEF);
        sd->red_bal = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_RED_BALANCE, 24, 40, 1, 32);
        sd->blue_bal = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_BLUE_BALANCE, 24, 40, 1, 32);
#define GAMMA_DEF 20
        sd->gamma = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_GAMMA, 0, 40, 1, GAMMA_DEF);

        if (sd->sensor == SENSOR_OM6802)
                sd->sharpness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_SHARPNESS, 0, 255, 1, 16);
        else
                sd->sharpness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_SHARPNESS, 0, 255, 1, 90);

        if (sd->flags & F_ILLUM)
                sd->illum = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_ILLUMINATORS_1, 0, 1, 1, 0);

        if (sd->sensor == SENSOR_PO2030N) {
                gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_EXPOSURE, 500, 1500, 1, 1024);
                gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_GAIN, 4, 49, 1, 15);
                sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_HFLIP, 0, 1, 1, 0);
        }

        if (sd->sensor != SENSOR_ADCM1700 && sd->sensor != SENSOR_OV7660 &&
            sd->sensor != SENSOR_PO1030 && sd->sensor != SENSOR_SOI768 &&
            sd->sensor != SENSOR_SP80708)
                gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_AUTOGAIN, 0, 1, 1, 1);

        if (sd->sensor == SENSOR_HV7131R || sd->sensor == SENSOR_OV7630 ||
            sd->sensor == SENSOR_OV7648 || sd->sensor == SENSOR_PO2030N)
                sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_VFLIP, 0, 1, 1, 0);

        if (sd->sensor == SENSOR_OV7630 || sd->sensor == SENSOR_OV7648 ||
            sd->sensor == SENSOR_OV7660)
                sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
                        V4L2_CID_POWER_LINE_FREQUENCY,
                        V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0,
                        V4L2_CID_POWER_LINE_FREQUENCY_50HZ);

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

        v4l2_ctrl_cluster(2, &sd->red_bal);
        if (sd->sensor == SENSOR_PO2030N) {
                v4l2_ctrl_cluster(2, &sd->vflip);
                v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
        }

        return 0;
}

static u32 expo_adjust(struct gspca_dev *gspca_dev,
                        u32 expo)
{
        struct sd *sd = (struct sd *) gspca_dev;

        switch (sd->sensor) {
        case SENSOR_GC0307: {
                int a, b;

                /* expo = 0..255 -> a = 19..43 */
                a = 19 + expo * 25 / 256;
                i2c_w1(gspca_dev, 0x68, a);
                a -= 12;
                b = a * a * 4;                  /* heuristic */
                i2c_w1(gspca_dev, 0x03, b >> 8);
                i2c_w1(gspca_dev, 0x04, b);
                break;
            }
        case SENSOR_HV7131R: {
                u8 Expodoit[] =
                        { 0xc1, 0x11, 0x25, 0x00, 0x00, 0x00, 0x00, 0x16 };

                Expodoit[3] = expo >> 16;
                Expodoit[4] = expo >> 8;
                Expodoit[5] = expo;
                i2c_w8(gspca_dev, Expodoit);
                break;
            }
        case SENSOR_MI0360:
        case SENSOR_MI0360B: {
                u8 expoMi[] =           /* exposure 0x0635 -> 4 fp/s 0x10 */
                        { 0xb1, 0x5d, 0x09, 0x00, 0x00, 0x00, 0x00, 0x16 };
                static const u8 doit[] =                /* update sensor */
                        { 0xb1, 0x5d, 0x07, 0x00, 0x03, 0x00, 0x00, 0x10 };
                static const u8 sensorgo[] =            /* sensor on */
                        { 0xb1, 0x5d, 0x07, 0x00, 0x02, 0x00, 0x00, 0x10 };

                if (expo > 0x0635)
                        expo = 0x0635;
                else if (expo < 0x0001)
                        expo = 0x0001;
                expoMi[3] = expo >> 8;
                expoMi[4] = expo;
                i2c_w8(gspca_dev, expoMi);
                i2c_w8(gspca_dev, doit);
                i2c_w8(gspca_dev, sensorgo);
                break;
            }
        case SENSOR_MO4000: {
                u8 expoMof[] =
                        { 0xa1, 0x21, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x10 };
                u8 expoMo10[] =
                        { 0xa1, 0x21, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10 };
                static const u8 gainMo[] =
                        { 0xa1, 0x21, 0x00, 0x10, 0x00, 0x00, 0x00, 0x1d };

                if (expo > 0x1fff)
                        expo = 0x1fff;
                else if (expo < 0x0001)
                        expo = 0x0001;
                expoMof[3] = (expo & 0x03fc) >> 2;
                i2c_w8(gspca_dev, expoMof);
                expoMo10[3] = ((expo & 0x1c00) >> 10)
                                | ((expo & 0x0003) << 4);
                i2c_w8(gspca_dev, expoMo10);
                i2c_w8(gspca_dev, gainMo);
                gspca_dbg(gspca_dev, D_FRAM, "set exposure %d\n",
                          ((expoMo10[3] & 0x07) << 10)
                          | (expoMof[3] << 2)
                          | ((expoMo10[3] & 0x30) >> 4));
                break;
            }
        case SENSOR_MT9V111: {
                u8 expo_c1[] =
                        { 0xb1, 0x5c, 0x09, 0x00, 0x00, 0x00, 0x00, 0x10 };

                if (expo > 0x0390)
                        expo = 0x0390;
                else if (expo < 0x0060)
                        expo = 0x0060;
                expo_c1[3] = expo >> 8;
                expo_c1[4] = expo;
                i2c_w8(gspca_dev, expo_c1);
                break;
            }
        case SENSOR_OM6802: {
                u8 gainOm[] =
                        { 0xa0, 0x34, 0xe5, 0x00, 0x00, 0x00, 0x00, 0x10 };
                                /* preset AGC - works when AutoExpo = off */

                if (expo > 0x03ff)
                        expo = 0x03ff;
                if (expo < 0x0001)
                        expo = 0x0001;
                gainOm[3] = expo >> 2;
                i2c_w8(gspca_dev, gainOm);
                reg_w1(gspca_dev, 0x96, expo >> 5);
                gspca_dbg(gspca_dev, D_FRAM, "set exposure %d\n", gainOm[3]);
                break;
            }
        }
        return expo;
}

static void setbrightness(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        unsigned int expo;
        int brightness = sd->brightness->val;
        u8 k2;

        k2 = (brightness - 0x80) >> 2;
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
                if (k2 > 0x1f)
                        k2 = 0;         /* only positive Y offset */
                break;
        case SENSOR_HV7131R:
                expo = brightness << 12;
                if (expo > 0x002dc6c0)
                        expo = 0x002dc6c0;
                else if (expo < 0x02a0)
                        expo = 0x02a0;
                sd->exposure = expo_adjust(gspca_dev, expo);
                break;
        case SENSOR_MI0360:
        case SENSOR_MO4000:
                expo = brightness << 4;
                sd->exposure = expo_adjust(gspca_dev, expo);
                break;
        case SENSOR_MI0360B:
                expo = brightness << 2;
                sd->exposure = expo_adjust(gspca_dev, expo);
                break;
        case SENSOR_GC0307:
                expo = brightness;
                sd->exposure = expo_adjust(gspca_dev, expo);
                return;                 /* don't set the Y offset */
        case SENSOR_MT9V111:
                expo = brightness << 2;
                sd->exposure = expo_adjust(gspca_dev, expo);
                return;                 /* don't set the Y offset */
        case SENSOR_OM6802:
                expo = brightness << 2;
                sd->exposure = expo_adjust(gspca_dev, expo);
                return;                 /* Y offset already set */
        }

        reg_w1(gspca_dev, 0x96, k2);    /* color matrix Y offset */
}

static void setcontrast(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u8 k2;
        u8 contrast[6];

        k2 = sd->contrast->val * 37 / (CONTRAST_MAX + 1)
                                + 37;           /* 37..73 */
        contrast[0] = (k2 + 1) / 2;             /* red */
        contrast[1] = 0;
        contrast[2] = k2;                       /* green */
        contrast[3] = 0;
        contrast[4] = k2 / 5;                   /* blue */
        contrast[5] = 0;
        reg_w(gspca_dev, 0x84, contrast, sizeof contrast);
}

static void setcolors(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int i, v, colors;
        const s16 *uv;
        u8 reg8a[12];                   /* U & V gains */
        static const s16 uv_com[6] = {  /* same as reg84 in signed decimal */
                -24, -38, 64,           /* UR UG UB */
                 62, -51, -9            /* VR VG VB */
        };
        static const s16 uv_mi0360b[6] = {
                -20, -38, 64,           /* UR UG UB */
                 60, -51, -9            /* VR VG VB */
        };

        colors = sd->saturation->val;
        if (sd->sensor == SENSOR_MI0360B)
                uv = uv_mi0360b;
        else
                uv = uv_com;
        for (i = 0; i < 6; i++) {
                v = uv[i] * colors / COLORS_DEF;
                reg8a[i * 2] = v;
                reg8a[i * 2 + 1] = (v >> 8) & 0x0f;
        }
        reg_w(gspca_dev, 0x8a, reg8a, sizeof reg8a);
}

static void setredblue(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        if (sd->sensor == SENSOR_PO2030N) {
                u8 rg1b[] =             /* red  green1 blue (no g2) */
                        {0xc1, 0x6e, 0x16, 0x00, 0x40, 0x00, 0x00, 0x10};

                /* 0x40 = normal value = gain x 1 */
                rg1b[3] = sd->red_bal->val * 2;
                rg1b[5] = sd->blue_bal->val * 2;
                i2c_w8(gspca_dev, rg1b);
                return;
        }
        reg_w1(gspca_dev, 0x05, sd->red_bal->val);
/*      reg_w1(gspca_dev, 0x07, 32); */
        reg_w1(gspca_dev, 0x06, sd->blue_bal->val);
}

static void setgamma(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int i, val;
        u8 gamma[17];
        const u8 *gamma_base;
        static const u8 delta[17] = {
                0x00, 0x14, 0x1c, 0x1c, 0x1c, 0x1c, 0x1b, 0x1a,
                0x18, 0x13, 0x10, 0x0e, 0x08, 0x07, 0x04, 0x02, 0x00
        };

        switch (sd->sensor) {
        case SENSOR_ADCM1700:
                gamma_base = gamma_spec_0;
                break;
        case SENSOR_HV7131R:
        case SENSOR_MI0360B:
        case SENSOR_MT9V111:
                gamma_base = gamma_spec_1;
                break;
        case SENSOR_GC0307:
                gamma_base = gamma_spec_2;
                break;
        case SENSOR_SP80708:
                gamma_base = gamma_spec_3;
                break;
        default:
                gamma_base = gamma_def;
                break;
        }

        val = sd->gamma->val;
        for (i = 0; i < sizeof gamma; i++)
                gamma[i] = gamma_base[i]
                        + delta[i] * (val - GAMMA_DEF) / 32;
        reg_w(gspca_dev, 0x20, gamma, sizeof gamma);
}

static void setexposure(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        if (sd->sensor == SENSOR_PO2030N) {
                u8 rexpo[] =            /* 1a: expo H, 1b: expo M */
                        {0xa1, 0x6e, 0x1a, 0x00, 0x40, 0x00, 0x00, 0x10};

                rexpo[3] = gspca_dev->exposure->val >> 8;
                i2c_w8(gspca_dev, rexpo);
                msleep(6);
                rexpo[2] = 0x1b;
                rexpo[3] = gspca_dev->exposure->val;
                i2c_w8(gspca_dev, rexpo);
        }
}

static void setautogain(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        switch (sd->sensor) {
        case SENSOR_OV7630:
        case SENSOR_OV7648: {
                u8 comb;

                if (sd->sensor == SENSOR_OV7630)
                        comb = 0xc0;
                else
                        comb = 0xa0;
                if (gspca_dev->autogain->val)
                        comb |= 0x03;
                i2c_w1(&sd->gspca_dev, 0x13, comb);
                return;
            }
        }
        if (gspca_dev->autogain->val)
                sd->ag_cnt = AG_CNT_START;
        else
                sd->ag_cnt = -1;
}

static void setgain(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        if (sd->sensor == SENSOR_PO2030N) {
                u8 rgain[] =            /* 15: gain */
                        {0xa1, 0x6e, 0x15, 0x00, 0x40, 0x00, 0x00, 0x15};

                rgain[3] = gspca_dev->gain->val;

                i2c_w8(gspca_dev, rgain);
        }
}

static void sethvflip(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u8 comn;

        switch (sd->sensor) {
        case SENSOR_HV7131R:
                comn = 0x18;                    /* clkdiv = 1, ablcen = 1 */
                if (sd->vflip->val)
                        comn |= 0x01;
                i2c_w1(gspca_dev, 0x01, comn);  /* sctra */
                break;
        case SENSOR_OV7630:
                comn = 0x02;
                if (!sd->vflip->val)
                        comn |= 0x80;
                i2c_w1(gspca_dev, 0x75, comn);
                break;
        case SENSOR_OV7648:
                comn = 0x06;
                if (sd->vflip->val)
                        comn |= 0x80;
                i2c_w1(gspca_dev, 0x75, comn);
                break;
        case SENSOR_PO2030N:
                /* Reg. 0x1E: Timing Generator Control Register 2 (Tgcontrol2)
                 * (reset value: 0x0A)
                 * bit7: HM: Horizontal Mirror: 0: disable, 1: enable
                 * bit6: VM: Vertical Mirror: 0: disable, 1: enable
                 * bit5: ST: Shutter Selection: 0: electrical, 1: mechanical
                 * bit4: FT: Single Frame Transfer: 0: disable, 1: enable
                 * bit3-0: X
                 */
                comn = 0x0a;
                if (sd->hflip->val)
                        comn |= 0x80;
                if (sd->vflip->val)
                        comn |= 0x40;
                i2c_w1(&sd->gspca_dev, 0x1e, comn);
                break;
        }
}

static void setsharpness(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        reg_w1(gspca_dev, 0x99, sd->sharpness->val);
}

static void setillum(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        switch (sd->sensor) {
        case SENSOR_ADCM1700:
                reg_w1(gspca_dev, 0x02,                         /* gpio */
                        sd->illum->val ? 0x64 : 0x60);
                break;
        case SENSOR_MT9V111:
                reg_w1(gspca_dev, 0x02,
                        sd->illum->val ? 0x77 : 0x74);
/* should have been: */
/*                                              0x55 : 0x54);   * 370i */
/*                                              0x66 : 0x64);   * Clip */
                break;
        }
}

static void setfreq(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        if (sd->sensor == SENSOR_OV7660) {
                u8 com8;

                com8 = 0xdf;            /* auto gain/wb/expo */
                switch (sd->freq->val) {
                case 0: /* Banding filter disabled */
                        i2c_w1(gspca_dev, 0x13, com8 | 0x20);
                        break;
                case 1: /* 50 hz */
                        i2c_w1(gspca_dev, 0x13, com8);
                        i2c_w1(gspca_dev, 0x3b, 0x0a);
                        break;
                case 2: /* 60 hz */
                        i2c_w1(gspca_dev, 0x13, com8);
                        i2c_w1(gspca_dev, 0x3b, 0x02);
                        break;
                }
        } else {
                u8 reg2a = 0, reg2b = 0, reg2d = 0;

                /* Get reg2a / reg2d base values */
                switch (sd->sensor) {
                case SENSOR_OV7630:
                        reg2a = 0x08;
                        reg2d = 0x01;
                        break;
                case SENSOR_OV7648:
                        reg2a = 0x11;
                        reg2d = 0x81;
                        break;
                }

                switch (sd->freq->val) {
                case 0: /* Banding filter disabled */
                        break;
                case 1: /* 50 hz (filter on and framerate adj) */
                        reg2a |= 0x80;
                        reg2b = 0xac;
                        reg2d |= 0x04;
                        break;
                case 2: /* 60 hz (filter on, no framerate adj) */
                        reg2a |= 0x80;
                        reg2d |= 0x04;
                        break;
                }
                i2c_w1(gspca_dev, 0x2a, reg2a);
                i2c_w1(gspca_dev, 0x2b, reg2b);
                i2c_w1(gspca_dev, 0x2d, reg2d);
        }
}

static void setjpegqual(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        jpeg_set_qual(sd->jpeg_hdr, sd->quality);
#if USB_BUF_SZ < 64
#error "No room enough in usb_buf for quantization table"
#endif
        memcpy(gspca_dev->usb_buf, &sd->jpeg_hdr[JPEG_QT0_OFFSET], 64);
        usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        0x0100, 0,
                        gspca_dev->usb_buf, 64,
                        500);
        memcpy(gspca_dev->usb_buf, &sd->jpeg_hdr[JPEG_QT1_OFFSET], 64);
        usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0x08,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
                        0x0140, 0,
                        gspca_dev->usb_buf, 64,
                        500);

        sd->reg18 ^= 0x40;
        reg_w1(gspca_dev, 0x18, sd->reg18);
}

/* JPEG quality update */
/* This function is executed from a work queue. */
static void qual_upd(struct work_struct *work)
{
        struct sd *sd = container_of(work, struct sd, work);
        struct gspca_dev *gspca_dev = &sd->gspca_dev;

        /* To protect gspca_dev->usb_buf and gspca_dev->usb_err */
        mutex_lock(&gspca_dev->usb_lock);
        gspca_dbg(gspca_dev, D_STREAM, "qual_upd %d%%\n", sd->quality);
        gspca_dev->usb_err = 0;
        setjpegqual(gspca_dev);
        mutex_unlock(&gspca_dev->usb_lock);
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int i;
        u8 reg01, reg17;
        u8 reg0102[2];
        const u8 *sn9c1xx;
        const u8 (*init)[8];
        const u8 *reg9a;
        int mode;
        static const u8 reg9a_def[] =
                {0x00, 0x40, 0x20, 0x00, 0x00, 0x00};
        static const u8 reg9a_spec[] =
                {0x00, 0x40, 0x38, 0x30, 0x00, 0x20};
        static const u8 regd4[] = {0x60, 0x00, 0x00};
        static const u8 C0[] = { 0x2d, 0x2d, 0x3a, 0x05, 0x04, 0x3f };
        static const u8 CA[] = { 0x28, 0xd8, 0x14, 0xec };
        static const u8 CA_adcm1700[] =
                                { 0x14, 0xec, 0x0a, 0xf6 };
        static const u8 CA_po2030n[] =
                                { 0x1e, 0xe2, 0x14, 0xec };
        static const u8 CE[] = { 0x32, 0xdd, 0x2d, 0xdd };      /* MI0360 */
        static const u8 CE_gc0307[] =
                                { 0x32, 0xce, 0x2d, 0xd3 };
        static const u8 CE_ov76xx[] =
                                { 0x32, 0xdd, 0x32, 0xdd };
        static const u8 CE_po2030n[] =
                                { 0x14, 0xe7, 0x1e, 0xdd };

        /* create the JPEG header */
        jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
                        gspca_dev->pixfmt.width,
                        0x21);          /* JPEG 422 */

        /* initialize the bridge */
        sn9c1xx = sn_tb[sd->sensor];

        /* sensor clock already enabled in sd_init */
        /* reg_w1(gspca_dev, 0xf1, 0x00); */
        reg01 = sn9c1xx[1];
        if (sd->flags & F_PDN_INV)
                reg01 ^= S_PDN_INV;             /* power down inverted */
        reg_w1(gspca_dev, 0x01, reg01);

        /* configure gpio */
        reg0102[0] = reg01;
        reg0102[1] = sn9c1xx[2];
        if (gspca_dev->audio)
                reg0102[1] |= 0x04;     /* keep the audio connection */
        reg_w(gspca_dev, 0x01, reg0102, 2);
        reg_w(gspca_dev, 0x08, &sn9c1xx[8], 2);
        reg_w(gspca_dev, 0x17, &sn9c1xx[0x17], 5);
        switch (sd->sensor) {
        case SENSOR_GC0307:
        case SENSOR_OV7660:
        case SENSOR_PO1030:
        case SENSOR_PO2030N:
        case SENSOR_SOI768:
        case SENSOR_SP80708:
                reg9a = reg9a_spec;
                break;
        default:
                reg9a = reg9a_def;
                break;
        }
        reg_w(gspca_dev, 0x9a, reg9a, 6);

        reg_w(gspca_dev, 0xd4, regd4, sizeof regd4);

        reg_w(gspca_dev, 0x03, &sn9c1xx[3], 0x0f);

        reg17 = sn9c1xx[0x17];
        switch (sd->sensor) {
        case SENSOR_GC0307:
                msleep(50);             /*fixme: is it useful? */
                break;
        case SENSOR_OM6802:
                msleep(10);
                reg_w1(gspca_dev, 0x02, 0x73);
                reg17 |= SEN_CLK_EN;
                reg_w1(gspca_dev, 0x17, reg17);
                reg_w1(gspca_dev, 0x01, 0x22);
                msleep(100);
                reg01 = SCL_SEL_OD | S_PDN_INV;
                reg17 &= ~MCK_SIZE_MASK;
                reg17 |= 0x04;          /* clock / 4 */
                break;
        }
        reg01 |= SYS_SEL_48M;
        reg_w1(gspca_dev, 0x01, reg01);
        reg17 |= SEN_CLK_EN;
        reg_w1(gspca_dev, 0x17, reg17);
        reg01 &= ~S_PWR_DN;             /* sensor power on */
        reg_w1(gspca_dev, 0x01, reg01);
        reg01 &= ~SCL_SEL_OD;           /* remove open-drain mode */
        reg_w1(gspca_dev, 0x01, reg01);

        switch (sd->sensor) {
        case SENSOR_HV7131R:
                hv7131r_probe(gspca_dev);       /*fixme: is it useful? */
                break;
        case SENSOR_OM6802:
                msleep(10);
                reg_w1(gspca_dev, 0x01, reg01);
                i2c_w8(gspca_dev, om6802_init0[0]);
                i2c_w8(gspca_dev, om6802_init0[1]);
                msleep(15);
                reg_w1(gspca_dev, 0x02, 0x71);
                msleep(150);
                break;
        case SENSOR_SP80708:
                msleep(100);
                reg_w1(gspca_dev, 0x02, 0x62);
                break;
        }

        /* initialize the sensor */
        i2c_w_seq(gspca_dev, sensor_init[sd->sensor]);

        reg_w1(gspca_dev, 0x15, sn9c1xx[0x15]);
        reg_w1(gspca_dev, 0x16, sn9c1xx[0x16]);
        reg_w1(gspca_dev, 0x12, sn9c1xx[0x12]);
        reg_w1(gspca_dev, 0x13, sn9c1xx[0x13]);
        reg_w1(gspca_dev, 0x18, sn9c1xx[0x18]);
        if (sd->sensor == SENSOR_ADCM1700) {
                reg_w1(gspca_dev, 0xd2, 0x3a);  /* AE_H_SIZE = 116 */
                reg_w1(gspca_dev, 0xd3, 0x30);  /* AE_V_SIZE = 96 */
        } else {
                reg_w1(gspca_dev, 0xd2, 0x6a);  /* AE_H_SIZE = 212 */
                reg_w1(gspca_dev, 0xd3, 0x50);  /* AE_V_SIZE = 160 */
        }
        reg_w1(gspca_dev, 0xc6, 0x00);
        reg_w1(gspca_dev, 0xc7, 0x00);
        if (sd->sensor == SENSOR_ADCM1700) {
                reg_w1(gspca_dev, 0xc8, 0x2c);  /* AW_H_STOP = 352 */
                reg_w1(gspca_dev, 0xc9, 0x24);  /* AW_V_STOP = 288 */
        } else {
                reg_w1(gspca_dev, 0xc8, 0x50);  /* AW_H_STOP = 640 */
                reg_w1(gspca_dev, 0xc9, 0x3c);  /* AW_V_STOP = 480 */
        }
        reg_w1(gspca_dev, 0x18, sn9c1xx[0x18]);
        switch (sd->sensor) {
        case SENSOR_OM6802:
/*      case SENSOR_OV7648:             * fixme: sometimes */
                break;
        default:
                reg17 |= DEF_EN;
                break;
        }
        reg_w1(gspca_dev, 0x17, reg17);

        reg_w1(gspca_dev, 0x05, 0x00);          /* red */
        reg_w1(gspca_dev, 0x07, 0x00);          /* green */
        reg_w1(gspca_dev, 0x06, 0x00);          /* blue */
        reg_w1(gspca_dev, 0x14, sn9c1xx[0x14]);

        setgamma(gspca_dev);

/*fixme: 8 times with all zeroes and 1 or 2 times with normal values */
        for (i = 0; i < 8; i++)
                reg_w(gspca_dev, 0x84, reg84, sizeof reg84);
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
        case SENSOR_OV7660:
        case SENSOR_SP80708:
                reg_w1(gspca_dev, 0x9a, 0x05);
                break;
        case SENSOR_GC0307:
        case SENSOR_MT9V111:
        case SENSOR_MI0360B:
                reg_w1(gspca_dev, 0x9a, 0x07);
                break;
        case SENSOR_OV7630:
        case SENSOR_OV7648:
                reg_w1(gspca_dev, 0x9a, 0x0a);
                break;
        case SENSOR_PO2030N:
        case SENSOR_SOI768:
                reg_w1(gspca_dev, 0x9a, 0x06);
                break;
        default:
                reg_w1(gspca_dev, 0x9a, 0x08);
                break;
        }
        setsharpness(gspca_dev);

        reg_w(gspca_dev, 0x84, reg84, sizeof reg84);
        reg_w1(gspca_dev, 0x05, 0x20);          /* red */
        reg_w1(gspca_dev, 0x07, 0x20);          /* green */
        reg_w1(gspca_dev, 0x06, 0x20);          /* blue */

        init = NULL;
        mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
        reg01 |= SYS_SEL_48M | V_TX_EN;
        reg17 &= ~MCK_SIZE_MASK;
        reg17 |= 0x02;                  /* clock / 2 */
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
                init = adcm1700_sensor_param1;
                break;
        case SENSOR_GC0307:
                init = gc0307_sensor_param1;
                break;
        case SENSOR_HV7131R:
        case SENSOR_MI0360:
                if (!mode)
                        reg01 &= ~SYS_SEL_48M;  /* 640x480: clk 24Mhz */
                reg17 &= ~MCK_SIZE_MASK;
                reg17 |= 0x01;                  /* clock / 1 */
                break;
        case SENSOR_MI0360B:
                init = mi0360b_sensor_param1;
                break;
        case SENSOR_MO4000:
                if (mode) {                     /* if 320x240 */
                        reg01 &= ~SYS_SEL_48M;  /* clk 24Mz */
                        reg17 &= ~MCK_SIZE_MASK;
                        reg17 |= 0x01;          /* clock / 1 */
                }
                break;
        case SENSOR_MT9V111:
                init = mt9v111_sensor_param1;
                break;
        case SENSOR_OM6802:
                init = om6802_sensor_param1;
                if (!mode) {                    /* if 640x480 */
                        reg17 &= ~MCK_SIZE_MASK;
                        reg17 |= 0x04;          /* clock / 4 */
                } else {
                        reg01 &= ~SYS_SEL_48M;  /* clk 24Mz */
                        reg17 &= ~MCK_SIZE_MASK;
                        reg17 |= 0x02;          /* clock / 2 */
                }
                break;
        case SENSOR_OV7630:
                init = ov7630_sensor_param1;
                break;
        case SENSOR_OV7648:
                init = ov7648_sensor_param1;
                reg17 &= ~MCK_SIZE_MASK;
                reg17 |= 0x01;                  /* clock / 1 */
                break;
        case SENSOR_OV7660:
                init = ov7660_sensor_param1;
                break;
        case SENSOR_PO1030:
                init = po1030_sensor_param1;
                break;
        case SENSOR_PO2030N:
                init = po2030n_sensor_param1;
                break;
        case SENSOR_SOI768:
                init = soi768_sensor_param1;
                break;
        case SENSOR_SP80708:
                init = sp80708_sensor_param1;
                break;
        }

        /* more sensor initialization - param1 */
        if (init != NULL) {
                i2c_w_seq(gspca_dev, init);
/*              init = NULL; */
        }

        reg_w(gspca_dev, 0xc0, C0, 6);
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
        case SENSOR_GC0307:
        case SENSOR_SOI768:
                reg_w(gspca_dev, 0xca, CA_adcm1700, 4);
                break;
        case SENSOR_PO2030N:
                reg_w(gspca_dev, 0xca, CA_po2030n, 4);
                break;
        default:
                reg_w(gspca_dev, 0xca, CA, 4);
                break;
        }
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
        case SENSOR_OV7630:
        case SENSOR_OV7648:
        case SENSOR_OV7660:
        case SENSOR_SOI768:
                reg_w(gspca_dev, 0xce, CE_ov76xx, 4);
                break;
        case SENSOR_GC0307:
                reg_w(gspca_dev, 0xce, CE_gc0307, 4);
                break;
        case SENSOR_PO2030N:
                reg_w(gspca_dev, 0xce, CE_po2030n, 4);
                break;
        default:
                reg_w(gspca_dev, 0xce, CE, 4);
                                        /* ?? {0x1e, 0xdd, 0x2d, 0xe7} */
                break;
        }

        /* here change size mode 0 -> VGA; 1 -> CIF */
        sd->reg18 = sn9c1xx[0x18] | (mode << 4) | 0x40;
        reg_w1(gspca_dev, 0x18, sd->reg18);
        setjpegqual(gspca_dev);

        reg_w1(gspca_dev, 0x17, reg17);
        reg_w1(gspca_dev, 0x01, reg01);
        sd->reg01 = reg01;
        sd->reg17 = reg17;

        sd->pktsz = sd->npkt = 0;
        sd->nchg = sd->short_mark = 0;

        return gspca_dev->usb_err;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        static const u8 stophv7131[] =
                { 0xa1, 0x11, 0x02, 0x09, 0x00, 0x00, 0x00, 0x10 };
        static const u8 stopmi0360[] =
                { 0xb1, 0x5d, 0x07, 0x00, 0x00, 0x00, 0x00, 0x10 };
        static const u8 stopov7648[] =
                { 0xa1, 0x21, 0x76, 0x20, 0x00, 0x00, 0x00, 0x10 };
        static const u8 stopsoi768[] =
                { 0xa1, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10 };
        u8 reg01;
        u8 reg17;

        reg01 = sd->reg01;
        reg17 = sd->reg17 & ~SEN_CLK_EN;
        switch (sd->sensor) {
        case SENSOR_ADCM1700:
        case SENSOR_GC0307:
        case SENSOR_PO2030N:
        case SENSOR_SP80708:
                reg01 |= LED;
                reg_w1(gspca_dev, 0x01, reg01);
                reg01 &= ~(LED | V_TX_EN);
                reg_w1(gspca_dev, 0x01, reg01);
/*              reg_w1(gspca_dev, 0x02, 0x??);   * LED off ? */
                break;
        case SENSOR_HV7131R:
                reg01 &= ~V_TX_EN;
                reg_w1(gspca_dev, 0x01, reg01);
                i2c_w8(gspca_dev, stophv7131);
                break;
        case SENSOR_MI0360:
        case SENSOR_MI0360B:
                reg01 &= ~V_TX_EN;
                reg_w1(gspca_dev, 0x01, reg01);
/*              reg_w1(gspca_dev, 0x02, 0x40);    * LED off ? */
                i2c_w8(gspca_dev, stopmi0360);
                break;
        case SENSOR_MT9V111:
        case SENSOR_OM6802:
        case SENSOR_PO1030:
                reg01 &= ~V_TX_EN;
                reg_w1(gspca_dev, 0x01, reg01);
                break;
        case SENSOR_OV7630:
        case SENSOR_OV7648:
                reg01 &= ~V_TX_EN;
                reg_w1(gspca_dev, 0x01, reg01);
                i2c_w8(gspca_dev, stopov7648);
                break;
        case SENSOR_OV7660:
                reg01 &= ~V_TX_EN;
                reg_w1(gspca_dev, 0x01, reg01);
                break;
        case SENSOR_SOI768:
                i2c_w8(gspca_dev, stopsoi768);
                break;
        }

        reg01 |= SCL_SEL_OD;
        reg_w1(gspca_dev, 0x01, reg01);
        reg01 |= S_PWR_DN;              /* sensor power down */
        reg_w1(gspca_dev, 0x01, reg01);
        reg_w1(gspca_dev, 0x17, reg17);
        reg01 &= ~SYS_SEL_48M;          /* clock 24MHz */
        reg_w1(gspca_dev, 0x01, reg01);
        reg01 |= LED;
        reg_w1(gspca_dev, 0x01, reg01);
        /* Don't disable sensor clock as that disables the button on the cam */
        /* reg_w1(gspca_dev, 0xf1, 0x01); */
}

/* called on streamoff with alt==0 and on disconnect */
/* the usb_lock is held at entry - restore on exit */
static void sd_stop0(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;

        mutex_unlock(&gspca_dev->usb_lock);
        flush_work(&sd->work);
        mutex_lock(&gspca_dev->usb_lock);
}

static void do_autogain(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int delta;
        int expotimes;
        u8 luma_mean = 130;
        u8 luma_delta = 20;

        /* Thanks S., without your advice, autobright should not work :) */
        if (sd->ag_cnt < 0)
                return;
        if (--sd->ag_cnt >= 0)
                return;
        sd->ag_cnt = AG_CNT_START;

        delta = atomic_read(&sd->avg_lum);
        gspca_dbg(gspca_dev, D_FRAM, "mean lum %d\n", delta);

        if (sd->sensor == SENSOR_PO2030N) {
                gspca_expo_autogain(gspca_dev, delta, luma_mean, luma_delta,
                                        15, 1024);
                return;
        }

        if (delta < luma_mean - luma_delta ||
            delta > luma_mean + luma_delta) {
                switch (sd->sensor) {
                case SENSOR_GC0307:
                        expotimes = sd->exposure;
                        expotimes += (luma_mean - delta) >> 6;
                        if (expotimes < 0)
                                expotimes = 0;
                        sd->exposure = expo_adjust(gspca_dev,
                                                   (unsigned int) expotimes);
                        break;
                case SENSOR_HV7131R:
                        expotimes = sd->exposure >> 8;
                        expotimes += (luma_mean - delta) >> 4;
                        if (expotimes < 0)
                                expotimes = 0;
                        sd->exposure = expo_adjust(gspca_dev,
                                        (unsigned int) (expotimes << 8));
                        break;
                case SENSOR_OM6802:
                case SENSOR_MT9V111:
                        expotimes = sd->exposure;
                        expotimes += (luma_mean - delta) >> 2;
                        if (expotimes < 0)
                                expotimes = 0;
                        sd->exposure = expo_adjust(gspca_dev,
                                                   (unsigned int) expotimes);
                        setredblue(gspca_dev);
                        break;
                default:
/*              case SENSOR_MO4000: */
/*              case SENSOR_MI0360: */
/*              case SENSOR_MI0360B: */
                        expotimes = sd->exposure;
                        expotimes += (luma_mean - delta) >> 6;
                        if (expotimes < 0)
                                expotimes = 0;
                        sd->exposure = expo_adjust(gspca_dev,
                                                   (unsigned int) expotimes);
                        setredblue(gspca_dev);
                        break;
                }
        }
}

/* set the average luminosity from an isoc marker */
static void set_lum(struct sd *sd,
                    u8 *data)
{
        int avg_lum;

        /*      w0 w1 w2
         *      w3 w4 w5
         *      w6 w7 w8
         */
        avg_lum = (data[27] << 8) + data[28]            /* w3 */

                + (data[31] << 8) + data[32]            /* w5 */

                + (data[23] << 8) + data[24]            /* w1 */

                + (data[35] << 8) + data[36]            /* w7 */

                + (data[29] << 10) + (data[30] << 2);   /* w4 * 4 */
        avg_lum >>= 10;
        atomic_set(&sd->avg_lum, avg_lum);
}

/* scan the URB packets */
/* This function is run at interrupt level. */
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
                        u8 *data,                       /* isoc packet */
                        int len)                        /* iso packet length */
{
        struct sd *sd = (struct sd *) gspca_dev;
        int i, new_qual;

        /*
         * A frame ends on the marker
         *              ff ff 00 c4 c4 96 ..
         * which is 62 bytes long and is followed by various information
         * including statuses and luminosity.
         *
         * A marker may be splitted on two packets.
         *
         * The 6th byte of a marker contains the bits:
         *      0x08: USB full
         *      0xc0: frame sequence
         * When the bit 'USB full' is set, the frame must be discarded;
         * this is also the case when the 2 bytes before the marker are
         * not the JPEG end of frame ('ff d9').
         */

        /* count the packets and their size */
        sd->npkt++;
        sd->pktsz += len;

/*fixme: assumption about the following code:
 *      - there can be only one marker in a packet
 */

        /* skip the remaining bytes of a short marker */
        i = sd->short_mark;
        if (i != 0) {
                sd->short_mark = 0;
                if (i < 0       /* if 'ff' at end of previous packet */
                 && data[0] == 0xff
                 && data[1] == 0x00)
                        goto marker_found;
                if (data[0] == 0xff && data[1] == 0xff) {
                        i = 0;
                        goto marker_found;
                }
                len -= i;
                if (len <= 0)
                        return;
                data += i;
        }

        /* search backwards if there is a marker in the packet */
        for (i = len - 1; --i >= 0; ) {
                if (data[i] != 0xff) {
                        i--;
                        continue;
                }
                if (data[i + 1] == 0xff) {

                        /* (there may be 'ff ff' inside a marker) */
                        if (i + 2 >= len || data[i + 2] == 0x00)
                                goto marker_found;
                }
        }

        /* no marker found */
        /* add the JPEG header if first fragment */
        if (data[len - 1] == 0xff)
                sd->short_mark = -1;
        if (gspca_dev->last_packet_type == LAST_PACKET)
                gspca_frame_add(gspca_dev, FIRST_PACKET,
                                sd->jpeg_hdr, JPEG_HDR_SZ);
        gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
        return;

        /* marker found */
        /* if some error, discard the frame and decrease the quality */
marker_found:
        new_qual = 0;
        if (i > 2) {
                if (data[i - 2] != 0xff || data[i - 1] != 0xd9) {
                        gspca_dev->last_packet_type = DISCARD_PACKET;
                        new_qual = -3;
                }
        } else if (i + 6 < len) {
                if (data[i + 6] & 0x08) {
                        gspca_dev->last_packet_type = DISCARD_PACKET;
                        new_qual = -5;
                }
        }

        gspca_frame_add(gspca_dev, LAST_PACKET, data, i);

        /* compute the filling rate and a new JPEG quality */
        if (new_qual == 0) {
                int r;

                r = (sd->pktsz * 100) /
                        (sd->npkt *
                                gspca_dev->urb[0]->iso_frame_desc[0].length);
                if (r >= 85)
                        new_qual = -3;
                else if (r < 75)
                        new_qual = 2;
        }
        if (new_qual != 0) {
                sd->nchg += new_qual;
                if (sd->nchg < -6 || sd->nchg >= 12) {
                        sd->nchg = 0;
                        new_qual += sd->quality;
                        if (new_qual < QUALITY_MIN)
                                new_qual = QUALITY_MIN;
                        else if (new_qual > QUALITY_MAX)
                                new_qual = QUALITY_MAX;
                        if (new_qual != sd->quality) {
                                sd->quality = new_qual;
                                schedule_work(&sd->work);
                        }
                }
        } else {
                sd->nchg = 0;
        }
        sd->pktsz = sd->npkt = 0;

        /* if the marker is smaller than 62 bytes,
         * memorize the number of bytes to skip in the next packet */
        if (i + 62 > len) {                     /* no more usable data */
                sd->short_mark = i + 62 - len;
                return;
        }
        if (sd->ag_cnt >= 0)
                set_lum(sd, data + i);

        /* if more data, start a new frame */
        i += 62;
        if (i < len) {
                data += i;
                len -= i;
                gspca_frame_add(gspca_dev, FIRST_PACKET,
                                sd->jpeg_hdr, JPEG_HDR_SZ);
                gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
        }
}

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);
                break;
        case V4L2_CID_CONTRAST:
                setcontrast(gspca_dev);
                break;
        case V4L2_CID_SATURATION:
                setcolors(gspca_dev);
                break;
        case V4L2_CID_RED_BALANCE:
                setredblue(gspca_dev);
                break;
        case V4L2_CID_GAMMA:
                setgamma(gspca_dev);
                break;
        case V4L2_CID_AUTOGAIN:
                setautogain(gspca_dev);
                setexposure(gspca_dev);
                setgain(gspca_dev);
                break;
        case V4L2_CID_VFLIP:
                sethvflip(gspca_dev);
                break;
        case V4L2_CID_SHARPNESS:
                setsharpness(gspca_dev);
                break;
        case V4L2_CID_ILLUMINATORS_1:
                setillum(gspca_dev);
                break;
        case V4L2_CID_POWER_LINE_FREQUENCY:
                setfreq(gspca_dev);
                break;
        default:
                return -EINVAL;
        }
        return gspca_dev->usb_err;
}

#if IS_ENABLED(CONFIG_INPUT)
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
                        u8 *data,               /* interrupt packet data */
                        int len)                /* interrupt packet length */
{
        int ret = -EINVAL;

        if (len == 1 && data[0] == 1) {
                input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
                input_sync(gspca_dev->input_dev);
                input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
                input_sync(gspca_dev->input_dev);
                ret = 0;
        }

        return ret;
}
#endif

/* 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,
        .stop0 = sd_stop0,
        .pkt_scan = sd_pkt_scan,
        .dq_callback = do_autogain,
#if IS_ENABLED(CONFIG_INPUT)
        .int_pkt_scan = sd_int_pkt_scan,
#endif
};

/* -- module initialisation -- */
#define BS(bridge, sensor) \
        .driver_info = (BRIDGE_ ## bridge << 16) \
                        | (SENSOR_ ## sensor << 8)
#define BSF(bridge, sensor, flags) \
        .driver_info = (BRIDGE_ ## bridge << 16) \
                        | (SENSOR_ ## sensor << 8) \
                        | (flags)
static const struct usb_device_id device_table[] = {
        {USB_DEVICE(0x0458, 0x7025), BSF(SN9C120, MI0360B, F_PDN_INV)},
        {USB_DEVICE(0x0458, 0x702e), BS(SN9C120, OV7660)},
        {USB_DEVICE(0x045e, 0x00f5), BSF(SN9C105, OV7660, F_PDN_INV)},
        {USB_DEVICE(0x045e, 0x00f7), BSF(SN9C105, OV7660, F_PDN_INV)},
        {USB_DEVICE(0x0471, 0x0327), BS(SN9C105, MI0360)},
        {USB_DEVICE(0x0471, 0x0328), BS(SN9C105, MI0360)},
        {USB_DEVICE(0x0471, 0x0330), BS(SN9C105, MI0360)},
        {USB_DEVICE(0x06f8, 0x3004), BS(SN9C105, OV7660)},
        {USB_DEVICE(0x06f8, 0x3008), BS(SN9C105, OV7660)},
/*      {USB_DEVICE(0x0c45, 0x603a), BS(SN9C102P, OV7648)}, */
        {USB_DEVICE(0x0c45, 0x6040), BS(SN9C102P, HV7131R)},
/*      {USB_DEVICE(0x0c45, 0x607a), BS(SN9C102P, OV7648)}, */
/*      {USB_DEVICE(0x0c45, 0x607b), BS(SN9C102P, OV7660)}, */
        {USB_DEVICE(0x0c45, 0x607c), BS(SN9C102P, HV7131R)},
/*      {USB_DEVICE(0x0c45, 0x607e), BS(SN9C102P, OV7630)}, */
        {USB_DEVICE(0x0c45, 0x60c0), BSF(SN9C105, MI0360, F_ILLUM)},
                                                /* or MT9V111 */
/*      {USB_DEVICE(0x0c45, 0x60c2), BS(SN9C105, P1030xC)}, */
/*      {USB_DEVICE(0x0c45, 0x60c8), BS(SN9C105, OM6802)}, */
/*      {USB_DEVICE(0x0c45, 0x60cc), BS(SN9C105, HV7131GP)}, */
        {USB_DEVICE(0x0c45, 0x60ce), BS(SN9C105, SP80708)},
        {USB_DEVICE(0x0c45, 0x60ec), BS(SN9C105, MO4000)},
/*      {USB_DEVICE(0x0c45, 0x60ef), BS(SN9C105, ICM105C)}, */
/*      {USB_DEVICE(0x0c45, 0x60fa), BS(SN9C105, OV7648)}, */
/*      {USB_DEVICE(0x0c45, 0x60f2), BS(SN9C105, OV7660)}, */
        {USB_DEVICE(0x0c45, 0x60fb), BS(SN9C105, OV7660)},
        {USB_DEVICE(0x0c45, 0x60fc), BS(SN9C105, HV7131R)},
        {USB_DEVICE(0x0c45, 0x60fe), BS(SN9C105, OV7630)},
        {USB_DEVICE(0x0c45, 0x6100), BS(SN9C120, MI0360)},      /*sn9c128*/
        {USB_DEVICE(0x0c45, 0x6102), BS(SN9C120, PO2030N)},     /* /GC0305*/
/*      {USB_DEVICE(0x0c45, 0x6108), BS(SN9C120, OM6802)}, */
        {USB_DEVICE(0x0c45, 0x610a), BS(SN9C120, OV7648)},      /*sn9c128*/
        {USB_DEVICE(0x0c45, 0x610b), BS(SN9C120, OV7660)},      /*sn9c128*/
        {USB_DEVICE(0x0c45, 0x610c), BS(SN9C120, HV7131R)},     /*sn9c128*/
        {USB_DEVICE(0x0c45, 0x610e), BS(SN9C120, OV7630)},      /*sn9c128*/
/*      {USB_DEVICE(0x0c45, 0x610f), BS(SN9C120, S5K53BEB)}, */
/*      {USB_DEVICE(0x0c45, 0x6122), BS(SN9C110, ICM105C)}, */
/*      {USB_DEVICE(0x0c45, 0x6123), BS(SN9C110, SanyoCCD)}, */
        {USB_DEVICE(0x0c45, 0x6128), BS(SN9C120, OM6802)},      /*sn9c325?*/
/*bw600.inf:*/
        {USB_DEVICE(0x0c45, 0x612a), BS(SN9C120, OV7648)},      /*sn9c325?*/
        {USB_DEVICE(0x0c45, 0x612b), BS(SN9C110, ADCM1700)},
        {USB_DEVICE(0x0c45, 0x612c), BS(SN9C110, MO4000)},
        {USB_DEVICE(0x0c45, 0x612e), BS(SN9C110, OV7630)},
/*      {USB_DEVICE(0x0c45, 0x612f), BS(SN9C110, ICM105C)}, */
        {USB_DEVICE(0x0c45, 0x6130), BS(SN9C120, MI0360)},
                                                /* or MT9V111 / MI0360B */
/*      {USB_DEVICE(0x0c45, 0x6132), BS(SN9C120, OV7670)}, */
        {USB_DEVICE(0x0c45, 0x6138), BS(SN9C120, MO4000)},
        {USB_DEVICE(0x0c45, 0x613a), BS(SN9C120, OV7648)},
        {USB_DEVICE(0x0c45, 0x613b), BS(SN9C120, OV7660)},
        {USB_DEVICE(0x0c45, 0x613c), BS(SN9C120, HV7131R)},
        {USB_DEVICE(0x0c45, 0x613e), BS(SN9C120, OV7630)},
        {USB_DEVICE(0x0c45, 0x6142), BS(SN9C120, PO2030N)},     /*sn9c120b*/
                                                /* or GC0305 / GC0307 */
        {USB_DEVICE(0x0c45, 0x6143), BS(SN9C120, SP80708)},     /*sn9c120b*/
        {USB_DEVICE(0x0c45, 0x6148), BS(SN9C120, OM6802)},      /*sn9c120b*/
        {USB_DEVICE(0x0c45, 0x614a), BSF(SN9C120, ADCM1700, F_ILLUM)},
/*      {USB_DEVICE(0x0c45, 0x614c), BS(SN9C120, GC0306)}, */   /*sn9c120b*/
        {}
};
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);