// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * SPCA508 chip based cameras subdriver
 *
 * Copyright (C) 2009 Jean-Francois Moine <http://moinejf.free.fr>
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "spca508"

#include "gspca.h"

MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA/SPCA508 USB Camera Driver");
MODULE_LICENSE("GPL");

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

        u8 subtype;
#define CreativeVista 0
#define HamaUSBSightcam 1
#define HamaUSBSightcam2 2
#define IntelEasyPCCamera 3
#define MicroInnovationIC200 4
#define ViewQuestVQ110 5
};

static const struct v4l2_pix_format sif_mode[] = {
        {160, 120, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE,
                .bytesperline = 160,
                .sizeimage = 160 * 120 * 3 / 2,
                .colorspace = V4L2_COLORSPACE_SRGB,
                .priv = 3},
        {176, 144, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE,
                .bytesperline = 176,
                .sizeimage = 176 * 144 * 3 / 2,
                .colorspace = V4L2_COLORSPACE_SRGB,
                .priv = 2},
        {320, 240, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE,
                .bytesperline = 320,
                .sizeimage = 320 * 240 * 3 / 2,
                .colorspace = V4L2_COLORSPACE_SRGB,
                .priv = 1},
        {352, 288, V4L2_PIX_FMT_SPCA508, V4L2_FIELD_NONE,
                .bytesperline = 352,
                .sizeimage = 352 * 288 * 3 / 2,
                .colorspace = V4L2_COLORSPACE_SRGB,
                .priv = 0},
};

/* Frame packet header offsets for the spca508 */
#define SPCA508_OFFSET_DATA 37

/*
 * Initialization data: this is the first set-up data written to the
 * device (before the open data).
 */
static const u16 spca508_init_data[][2] = {
        {0x0000, 0x870b},

        {0x0020, 0x8112},       /* Video drop enable, ISO streaming disable */
        {0x0003, 0x8111},       /* Reset compression & memory */
        {0x0000, 0x8110},       /* Disable all outputs */
        /* READ {0x0000, 0x8114} -> 0000: 00  */
        {0x0000, 0x8114},       /* SW GPIO data */
        {0x0008, 0x8110},       /* Enable charge pump output */
        {0x0002, 0x8116},       /* 200 kHz pump clock */
        /* UNKNOWN DIRECTION (URB_FUNCTION_SELECT_INTERFACE:) */
        {0x0003, 0x8111},       /* Reset compression & memory */
        {0x0000, 0x8111},       /* Normal mode (not reset) */
        {0x0098, 0x8110},
                /* Enable charge pump output, sync.serial,external 2x clock */
        {0x000d, 0x8114},       /* SW GPIO data */
        {0x0002, 0x8116},       /* 200 kHz pump clock */
        {0x0020, 0x8112},       /* Video drop enable, ISO streaming disable */
/* --------------------------------------- */
        {0x000f, 0x8402},       /* memory bank */
        {0x0000, 0x8403},       /* ... address */
/* --------------------------------------- */
/* 0x88__ is Synchronous Serial Interface. */
/* TBD: This table could be expressed more compactly */
/* using spca508_write_i2c_vector(). */
/* TBD: Should see if the values in spca50x_i2c_data */
/* would work with the VQ110 instead of the values */
/* below. */
        {0x00c0, 0x8804},       /* SSI slave addr */
        {0x0008, 0x8802},       /* 375 Khz SSI clock */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},       /* 375 Khz SSI clock */
        {0x0012, 0x8801},       /* SSI reg addr */
        {0x0080, 0x8800},       /* SSI data to write */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},       /* 375 Khz SSI clock */
        {0x0012, 0x8801},       /* SSI reg addr */
        {0x0000, 0x8800},       /* SSI data to write */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},       /* 375 Khz SSI clock */
        {0x0011, 0x8801},       /* SSI reg addr */
        {0x0040, 0x8800},       /* SSI data to write */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0013, 0x8801},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0014, 0x8801},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0015, 0x8801},
        {0x0001, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0016, 0x8801},
        {0x0003, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0017, 0x8801},
        {0x0036, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0018, 0x8801},
        {0x00ec, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x001a, 0x8801},
        {0x0094, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x001b, 0x8801},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0027, 0x8801},
        {0x00a2, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0028, 0x8801},
        {0x0040, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x002a, 0x8801},
        {0x0084, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00 */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x002b, 0x8801},
        {0x00a8, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x002c, 0x8801},
        {0x00fe, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x002d, 0x8801},
        {0x0003, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0038, 0x8801},
        {0x0083, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0033, 0x8801},
        {0x0081, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0034, 0x8801},
        {0x004a, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0039, 0x8801},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0010, 0x8801},
        {0x00a8, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0006, 0x8801},
        {0x0058, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00 */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0000, 0x8801},
        {0x0004, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0040, 0x8801},
        {0x0080, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0041, 0x8801},
        {0x000c, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0042, 0x8801},
        {0x000c, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0043, 0x8801},
        {0x0028, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0044, 0x8801},
        {0x0080, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0045, 0x8801},
        {0x0020, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0046, 0x8801},
        {0x0020, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0047, 0x8801},
        {0x0080, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0048, 0x8801},
        {0x004c, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x0049, 0x8801},
        {0x0084, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x004a, 0x8801},
        {0x0084, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x0008, 0x8802},
        {0x004b, 0x8801},
        {0x0084, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* --------------------------------------- */
        {0x0012, 0x8700},       /* Clock speed 48Mhz/(2+2)/2= 6 Mhz */
        {0x0000, 0x8701},       /* CKx1 clock delay adj */
        {0x0000, 0x8701},       /* CKx1 clock delay adj */
        {0x0001, 0x870c},       /* CKOx2 output */
        /* --------------------------------------- */
        {0x0080, 0x8600},       /* Line memory read counter (L) */
        {0x0001, 0x8606},       /* reserved */
        {0x0064, 0x8607},       /* Line memory read counter (H) 0x6480=25,728 */
        {0x002a, 0x8601},       /* CDSP sharp interpolation mode,
         *                      line sel for color sep, edge enhance enab */
        {0x0000, 0x8602},       /* optical black level for user settng = 0 */
        {0x0080, 0x8600},       /* Line memory read counter (L) */
        {0x000a, 0x8603},       /* optical black level calc mode:
                                 * auto; optical black offset = 10 */
        {0x00df, 0x865b},       /* Horiz offset for valid pixels (L)=0xdf */
        {0x0012, 0x865c},       /* Vert offset for valid lines (L)=0x12 */

/* The following two lines seem to be the "wrong" resolution. */
/* But perhaps these indicate the actual size of the sensor */
/* rather than the size of the current video mode. */
        {0x0058, 0x865d},       /* Horiz valid pixels (*4) (L) = 352 */
        {0x0048, 0x865e},       /* Vert valid lines (*4) (L) = 288 */

        {0x0015, 0x8608},       /* A11 Coef ... */
        {0x0030, 0x8609},
        {0x00fb, 0x860a},
        {0x003e, 0x860b},
        {0x00ce, 0x860c},
        {0x00f4, 0x860d},
        {0x00eb, 0x860e},
        {0x00dc, 0x860f},
        {0x0039, 0x8610},
        {0x0001, 0x8611},       /* R offset for white balance ... */
        {0x0000, 0x8612},
        {0x0001, 0x8613},
        {0x0000, 0x8614},
        {0x005b, 0x8651},       /* R gain for white balance ... */
        {0x0040, 0x8652},
        {0x0060, 0x8653},
        {0x0040, 0x8654},
        {0x0000, 0x8655},
        {0x0001, 0x863f},       /* Fixed gamma correction enable, USB control,
                                 * lum filter disable, lum noise clip disable */
        {0x00a1, 0x8656},       /* Window1 size 256x256, Windows2 size 64x64,
                                 * gamma look-up disable,
                                 * new edge enhancement enable */
        {0x0018, 0x8657},       /* Edge gain high thresh */
        {0x0020, 0x8658},       /* Edge gain low thresh */
        {0x000a, 0x8659},       /* Edge bandwidth high threshold */
        {0x0005, 0x865a},       /* Edge bandwidth low threshold */
        /* -------------------------------- */
        {0x0030, 0x8112},       /* Video drop enable, ISO streaming enable */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0xa908, 0x8802},
        {0x0034, 0x8801},       /* SSI reg addr */
        {0x00ca, 0x8800},
        /* SSI data to write */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0x1f08, 0x8802},
        {0x0006, 0x8801},
        {0x0080, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

/* ----- Read back coefs we wrote earlier. */
        /* READ { 0x0000, 0x8608 } -> 0000: 15  */
        /* READ { 0x0000, 0x8609 } -> 0000: 30  */
        /* READ { 0x0000, 0x860a } -> 0000: fb  */
        /* READ { 0x0000, 0x860b } -> 0000: 3e  */
        /* READ { 0x0000, 0x860c } -> 0000: ce  */
        /* READ { 0x0000, 0x860d } -> 0000: f4  */
        /* READ { 0x0000, 0x860e } -> 0000: eb  */
        /* READ { 0x0000, 0x860f } -> 0000: dc  */
        /* READ { 0x0000, 0x8610 } -> 0000: 39  */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 08  */
        {0xb008, 0x8802},
        {0x0006, 0x8801},
        {0x007d, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */


        /* This chunk is seemingly redundant with */
        /* earlier commands (A11 Coef...), but if I disable it, */
        /* the image appears too dark.  Maybe there was some kind of */
        /* reset since the earlier commands, so this is necessary again. */
        {0x0015, 0x8608},
        {0x0030, 0x8609},
        {0xfffb, 0x860a},
        {0x003e, 0x860b},
        {0xffce, 0x860c},
        {0xfff4, 0x860d},
        {0xffeb, 0x860e},
        {0xffdc, 0x860f},
        {0x0039, 0x8610},
        {0x0018, 0x8657},

        {0x0000, 0x8508},       /* Disable compression. */
        /* Previous line was:
        {0x0021, 0x8508},        * Enable compression. */
        {0x0032, 0x850b},       /* compression stuff */
        {0x0003, 0x8509},       /* compression stuff */
        {0x0011, 0x850a},       /* compression stuff */
        {0x0021, 0x850d},       /* compression stuff */
        {0x0010, 0x850c},       /* compression stuff */
        {0x0003, 0x8500},       /* *** Video mode: 160x120 */
        {0x0001, 0x8501},       /* Hardware-dominated snap control */
        {0x0061, 0x8656},       /* Window1 size 128x128, Windows2 size 128x128,
                                 * gamma look-up disable,
                                 * new edge enhancement enable */
        {0x0018, 0x8617},       /* Window1 start X (*2) */
        {0x0008, 0x8618},       /* Window1 start Y (*2) */
        {0x0061, 0x8656},       /* Window1 size 128x128, Windows2 size 128x128,
                                 * gamma look-up disable,
                                 * new edge enhancement enable */
        {0x0058, 0x8619},       /* Window2 start X (*2) */
        {0x0008, 0x861a},       /* Window2 start Y (*2) */
        {0x00ff, 0x8615},       /* High lum thresh for white balance */
        {0x0000, 0x8616},       /* Low lum thresh for white balance */
        {0x0012, 0x8700},       /* Clock speed 48Mhz/(2+2)/2= 6 Mhz */
        {0x0012, 0x8700},       /* Clock speed 48Mhz/(2+2)/2= 6 Mhz */
        /* READ { 0x0000, 0x8656 } -> 0000: 61  */
        {0x0028, 0x8802},    /* 375 Khz SSI clock, SSI r/w sync with VSYNC */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 28  */
        {0x1f28, 0x8802},    /* 375 Khz SSI clock, SSI r/w sync with VSYNC */
        {0x0010, 0x8801},       /* SSI reg addr */
        {0x003e, 0x8800},       /* SSI data to write */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        {0x0028, 0x8802},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 28  */
        {0x1f28, 0x8802},
        {0x0000, 0x8801},
        {0x001f, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        {0x0001, 0x8602},    /* optical black level for user settning = 1 */

        /* Original: */
        {0x0023, 0x8700},       /* Clock speed 48Mhz/(3+2)/4= 2.4 Mhz */
        {0x000f, 0x8602},    /* optical black level for user settning = 15 */

        {0x0028, 0x8802},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 28  */
        {0x1f28, 0x8802},
        {0x0010, 0x8801},
        {0x007b, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        {0x002f, 0x8651},       /* R gain for white balance ... */
        {0x0080, 0x8653},
        /* READ { 0x0000, 0x8655 } -> 0000: 00  */
        {0x0000, 0x8655},

        {0x0030, 0x8112},       /* Video drop enable, ISO streaming enable */
        {0x0020, 0x8112},       /* Video drop enable, ISO streaming disable */
        /* UNKNOWN DIRECTION (URB_FUNCTION_SELECT_INTERFACE: (ALT=0) ) */
        {}
};

/*
 * Initialization data for Intel EasyPC Camera CS110
 */
static const u16 spca508cs110_init_data[][2] = {
        {0x0000, 0x870b},       /* Reset CTL3 */
        {0x0003, 0x8111},       /* Soft Reset compression, memory, TG & CDSP */
        {0x0000, 0x8111},       /* Normal operation on reset */
        {0x0090, 0x8110},
                 /* External Clock 2x & Synchronous Serial Interface Output */
        {0x0020, 0x8112},       /* Video Drop packet enable */
        {0x0000, 0x8114},       /* Software GPIO output data */
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0003, 0x8114},

        /* Initial sequence Synchronous Serial Interface */
        {0x000f, 0x8402},       /* Memory bank Address */
        {0x0000, 0x8403},       /* Memory bank Address */
        {0x00ba, 0x8804},       /* SSI Slave address */
        {0x0010, 0x8802},       /* 93.75kHz SSI Clock Two DataByte */
        {0x0010, 0x8802},       /* 93.75kHz SSI Clock two DataByte */

        {0x0001, 0x8801},
        {0x000a, 0x8805},       /* a - NWG: Dunno what this is about */
        {0x0000, 0x8800},
        {0x0010, 0x8802},

        {0x0002, 0x8801},
        {0x0000, 0x8805},
        {0x0000, 0x8800},
        {0x0010, 0x8802},

        {0x0003, 0x8801},
        {0x0027, 0x8805},
        {0x0001, 0x8800},
        {0x0010, 0x8802},

        {0x0004, 0x8801},
        {0x0065, 0x8805},
        {0x0001, 0x8800},
        {0x0010, 0x8802},

        {0x0005, 0x8801},
        {0x0003, 0x8805},
        {0x0000, 0x8800},
        {0x0010, 0x8802},

        {0x0006, 0x8801},
        {0x001c, 0x8805},
        {0x0000, 0x8800},
        {0x0010, 0x8802},

        {0x0007, 0x8801},
        {0x002a, 0x8805},
        {0x0000, 0x8800},
        {0x0010, 0x8802},

        {0x0002, 0x8704},       /* External input CKIx1 */
        {0x0001, 0x8606},    /* 1 Line memory Read Counter (H) Result: (d)410 */
        {0x009a, 0x8600},       /* Line memory Read Counter (L) */
        {0x0001, 0x865b},       /* 1 Horizontal Offset for Valid Pixel(L) */
        {0x0003, 0x865c},       /* 3 Vertical Offset for Valid Lines(L) */
        {0x0058, 0x865d},       /* 58 Horizontal Valid Pixel Window(L) */

        {0x0006, 0x8660},       /* Nibble data + input order */

        {0x000a, 0x8602},       /* Optical black level set to 0x0a */
        {0x0000, 0x8603},       /* Optical black level Offset */

/*      {0x0000, 0x8611},        * 0 R  Offset for white Balance */
/*      {0x0000, 0x8612},        * 1 Gr Offset for white Balance */
/*      {0x0000, 0x8613},        * 1f B  Offset for white Balance */
/*      {0x0000, 0x8614},        * f0 Gb Offset for white Balance */

        {0x0040, 0x8651},   /* 2b BLUE gain for white balance  good at all 60 */
        {0x0030, 0x8652},       /* 41 Gr Gain for white Balance (L) */
        {0x0035, 0x8653},       /* 26 RED gain for white balance */
        {0x0035, 0x8654},       /* 40Gb Gain for white Balance (L) */
        {0x0041, 0x863f},
              /* Fixed Gamma correction enabled (makes colours look better) */

        {0x0000, 0x8655},
                /* High bits for white balance*****brightness control*** */
        {}
};

static const u16 spca508_sightcam_init_data[][2] = {
/* This line seems to setup the frame/canvas */
        {0x000f, 0x8402},

/* These 6 lines are needed to startup the webcam */
        {0x0090, 0x8110},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0003, 0x8114},
        {0x0080, 0x8804},

/* This part seems to make the pictures darker? (autobrightness?) */
        {0x0001, 0x8801},
        {0x0004, 0x8800},
        {0x0003, 0x8801},
        {0x00e0, 0x8800},
        {0x0004, 0x8801},
        {0x00b4, 0x8800},
        {0x0005, 0x8801},
        {0x0000, 0x8800},

        {0x0006, 0x8801},
        {0x00e0, 0x8800},
        {0x0007, 0x8801},
        {0x000c, 0x8800},

/* This section is just needed, it probably
 * does something like the previous section,
 * but the cam won't start if it's not included.
 */
        {0x0014, 0x8801},
        {0x0008, 0x8800},
        {0x0015, 0x8801},
        {0x0067, 0x8800},
        {0x0016, 0x8801},
        {0x0000, 0x8800},
        {0x0017, 0x8801},
        {0x0020, 0x8800},
        {0x0018, 0x8801},
        {0x0044, 0x8800},

/* Makes the picture darker - and the
 * cam won't start if not included
 */
        {0x001e, 0x8801},
        {0x00ea, 0x8800},
        {0x001f, 0x8801},
        {0x0001, 0x8800},
        {0x0003, 0x8801},
        {0x00e0, 0x8800},

/* seems to place the colors ontop of each other #1 */
        {0x0006, 0x8704},
        {0x0001, 0x870c},
        {0x0016, 0x8600},
        {0x0002, 0x8606},

/* if not included the pictures becomes _very_ dark */
        {0x0064, 0x8607},
        {0x003a, 0x8601},
        {0x0000, 0x8602},

/* seems to place the colors ontop of each other #2 */
        {0x0016, 0x8600},
        {0x0018, 0x8617},
        {0x0008, 0x8618},
        {0x00a1, 0x8656},

/* webcam won't start if not included */
        {0x0007, 0x865b},
        {0x0001, 0x865c},
        {0x0058, 0x865d},
        {0x0048, 0x865e},

/* adjusts the colors */
        {0x0049, 0x8651},
        {0x0040, 0x8652},
        {0x004c, 0x8653},
        {0x0040, 0x8654},
        {}
};

static const u16 spca508_sightcam2_init_data[][2] = {
        {0x0020, 0x8112},

        {0x000f, 0x8402},
        {0x0000, 0x8403},

        {0x0008, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x0009, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x000a, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x000b, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x000c, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x000d, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x000e, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x0007, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x000f, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},

        {0x0018, 0x8660},
        {0x0010, 0x8201},

        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x0011, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},

        {0x0000, 0x86b0},
        {0x0034, 0x86b1},
        {0x0000, 0x86b2},
        {0x0049, 0x86b3},
        {0x0000, 0x86b4},
        {0x0000, 0x86b4},

        {0x0012, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},
        {0x0013, 0x8201},
        {0x0008, 0x8200},
        {0x0001, 0x8200},

        {0x0001, 0x86b0},
        {0x00aa, 0x86b1},
        {0x0000, 0x86b2},
        {0x00e4, 0x86b3},
        {0x0000, 0x86b4},
        {0x0000, 0x86b4},

        {0x0018, 0x8660},

        {0x0090, 0x8110},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0003, 0x8114},

        {0x0080, 0x8804},
        {0x0003, 0x8801},
        {0x0012, 0x8800},
        {0x0004, 0x8801},
        {0x0005, 0x8800},
        {0x0005, 0x8801},
        {0x0000, 0x8800},
        {0x0006, 0x8801},
        {0x0000, 0x8800},
        {0x0007, 0x8801},
        {0x0000, 0x8800},
        {0x0008, 0x8801},
        {0x0005, 0x8800},
        {0x000a, 0x8700},
        {0x000e, 0x8801},
        {0x0004, 0x8800},
        {0x0005, 0x8801},
        {0x0047, 0x8800},
        {0x0006, 0x8801},
        {0x0000, 0x8800},
        {0x0007, 0x8801},
        {0x00c0, 0x8800},
        {0x0008, 0x8801},
        {0x0003, 0x8800},
        {0x0013, 0x8801},
        {0x0001, 0x8800},
        {0x0009, 0x8801},
        {0x0000, 0x8800},
        {0x000a, 0x8801},
        {0x0000, 0x8800},
        {0x000b, 0x8801},
        {0x0000, 0x8800},
        {0x000c, 0x8801},
        {0x0000, 0x8800},
        {0x000e, 0x8801},
        {0x0004, 0x8800},
        {0x000f, 0x8801},
        {0x0000, 0x8800},
        {0x0010, 0x8801},
        {0x0006, 0x8800},
        {0x0011, 0x8801},
        {0x0006, 0x8800},
        {0x0012, 0x8801},
        {0x0000, 0x8800},
        {0x0013, 0x8801},
        {0x0001, 0x8800},

        {0x000a, 0x8700},
        {0x0000, 0x8702},
        {0x0000, 0x8703},
        {0x00c2, 0x8704},
        {0x0001, 0x870c},

        {0x0044, 0x8600},
        {0x0002, 0x8606},
        {0x0064, 0x8607},
        {0x003a, 0x8601},
        {0x0008, 0x8602},
        {0x0044, 0x8600},
        {0x0018, 0x8617},
        {0x0008, 0x8618},
        {0x00a1, 0x8656},
        {0x0004, 0x865b},
        {0x0002, 0x865c},
        {0x0058, 0x865d},
        {0x0048, 0x865e},
        {0x0012, 0x8608},
        {0x002c, 0x8609},
        {0x0002, 0x860a},
        {0x002c, 0x860b},
        {0x00db, 0x860c},
        {0x00f9, 0x860d},
        {0x00f1, 0x860e},
        {0x00e3, 0x860f},
        {0x002c, 0x8610},
        {0x006c, 0x8651},
        {0x0041, 0x8652},
        {0x0059, 0x8653},
        {0x0040, 0x8654},
        {0x00fa, 0x8611},
        {0x00ff, 0x8612},
        {0x00f8, 0x8613},
        {0x0000, 0x8614},
        {0x0001, 0x863f},
        {0x0000, 0x8640},
        {0x0026, 0x8641},
        {0x0045, 0x8642},
        {0x0060, 0x8643},
        {0x0075, 0x8644},
        {0x0088, 0x8645},
        {0x009b, 0x8646},
        {0x00b0, 0x8647},
        {0x00c5, 0x8648},
        {0x00d2, 0x8649},
        {0x00dc, 0x864a},
        {0x00e5, 0x864b},
        {0x00eb, 0x864c},
        {0x00f0, 0x864d},
        {0x00f6, 0x864e},
        {0x00fa, 0x864f},
        {0x00ff, 0x8650},
        {0x0060, 0x8657},
        {0x0010, 0x8658},
        {0x0018, 0x8659},
        {0x0005, 0x865a},
        {0x0018, 0x8660},
        {0x0003, 0x8509},
        {0x0011, 0x850a},
        {0x0032, 0x850b},
        {0x0010, 0x850c},
        {0x0021, 0x850d},
        {0x0001, 0x8500},
        {0x0000, 0x8508},
        {0x0012, 0x8608},
        {0x002c, 0x8609},
        {0x0002, 0x860a},
        {0x0039, 0x860b},
        {0x00d0, 0x860c},
        {0x00f7, 0x860d},
        {0x00ed, 0x860e},
        {0x00db, 0x860f},
        {0x0039, 0x8610},
        {0x0012, 0x8657},
        {0x000c, 0x8619},
        {0x0004, 0x861a},
        {0x00a1, 0x8656},
        {0x00c8, 0x8615},
        {0x0032, 0x8616},

        {0x0030, 0x8112},
        {0x0020, 0x8112},
        {0x0020, 0x8112},
        {0x000f, 0x8402},
        {0x0000, 0x8403},

        {0x0090, 0x8110},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0003, 0x8114},
        {0x0080, 0x8804},

        {0x0003, 0x8801},
        {0x0012, 0x8800},
        {0x0004, 0x8801},
        {0x0005, 0x8800},
        {0x0005, 0x8801},
        {0x0047, 0x8800},
        {0x0006, 0x8801},
        {0x0000, 0x8800},
        {0x0007, 0x8801},
        {0x00c0, 0x8800},
        {0x0008, 0x8801},
        {0x0003, 0x8800},
        {0x000a, 0x8700},
        {0x000e, 0x8801},
        {0x0004, 0x8800},
        {0x0005, 0x8801},
        {0x0047, 0x8800},
        {0x0006, 0x8801},
        {0x0000, 0x8800},
        {0x0007, 0x8801},
        {0x00c0, 0x8800},
        {0x0008, 0x8801},
        {0x0003, 0x8800},
        {0x0013, 0x8801},
        {0x0001, 0x8800},
        {0x0009, 0x8801},
        {0x0000, 0x8800},
        {0x000a, 0x8801},
        {0x0000, 0x8800},
        {0x000b, 0x8801},
        {0x0000, 0x8800},
        {0x000c, 0x8801},
        {0x0000, 0x8800},
        {0x000e, 0x8801},
        {0x0004, 0x8800},
        {0x000f, 0x8801},
        {0x0000, 0x8800},
        {0x0010, 0x8801},
        {0x0006, 0x8800},
        {0x0011, 0x8801},
        {0x0006, 0x8800},
        {0x0012, 0x8801},
        {0x0000, 0x8800},
        {0x0013, 0x8801},
        {0x0001, 0x8800},
        {0x000a, 0x8700},
        {0x0000, 0x8702},
        {0x0000, 0x8703},
        {0x00c2, 0x8704},
        {0x0001, 0x870c},
        {0x0044, 0x8600},
        {0x0002, 0x8606},
        {0x0064, 0x8607},
        {0x003a, 0x8601},
        {0x0008, 0x8602},
        {0x0044, 0x8600},
        {0x0018, 0x8617},
        {0x0008, 0x8618},
        {0x00a1, 0x8656},
        {0x0004, 0x865b},
        {0x0002, 0x865c},
        {0x0058, 0x865d},
        {0x0048, 0x865e},
        {0x0012, 0x8608},
        {0x002c, 0x8609},
        {0x0002, 0x860a},
        {0x002c, 0x860b},
        {0x00db, 0x860c},
        {0x00f9, 0x860d},
        {0x00f1, 0x860e},
        {0x00e3, 0x860f},
        {0x002c, 0x8610},
        {0x006c, 0x8651},
        {0x0041, 0x8652},
        {0x0059, 0x8653},
        {0x0040, 0x8654},
        {0x00fa, 0x8611},
        {0x00ff, 0x8612},
        {0x00f8, 0x8613},
        {0x0000, 0x8614},
        {0x0001, 0x863f},
        {0x0000, 0x8640},
        {0x0026, 0x8641},
        {0x0045, 0x8642},
        {0x0060, 0x8643},
        {0x0075, 0x8644},
        {0x0088, 0x8645},
        {0x009b, 0x8646},
        {0x00b0, 0x8647},
        {0x00c5, 0x8648},
        {0x00d2, 0x8649},
        {0x00dc, 0x864a},
        {0x00e5, 0x864b},
        {0x00eb, 0x864c},
        {0x00f0, 0x864d},
        {0x00f6, 0x864e},
        {0x00fa, 0x864f},
        {0x00ff, 0x8650},
        {0x0060, 0x8657},
        {0x0010, 0x8658},
        {0x0018, 0x8659},
        {0x0005, 0x865a},
        {0x0018, 0x8660},
        {0x0003, 0x8509},
        {0x0011, 0x850a},
        {0x0032, 0x850b},
        {0x0010, 0x850c},
        {0x0021, 0x850d},
        {0x0001, 0x8500},
        {0x0000, 0x8508},

        {0x0012, 0x8608},
        {0x002c, 0x8609},
        {0x0002, 0x860a},
        {0x0039, 0x860b},
        {0x00d0, 0x860c},
        {0x00f7, 0x860d},
        {0x00ed, 0x860e},
        {0x00db, 0x860f},
        {0x0039, 0x8610},
        {0x0012, 0x8657},
        {0x0064, 0x8619},

/* This line starts it all, it is not needed here */
/* since it has been build into the driver */
/* jfm: don't start now */
/*      {0x0030, 0x8112}, */
        {}
};

/*
 * Initialization data for Creative Webcam Vista
 */
static const u16 spca508_vista_init_data[][2] = {
        {0x0008, 0x8200},       /* Clear register */
        {0x0000, 0x870b},       /* Reset CTL3 */
        {0x0020, 0x8112},       /* Video Drop packet enable */
        {0x0003, 0x8111},       /* Soft Reset compression, memory, TG & CDSP */
        {0x0000, 0x8110},       /* Disable everything */
        {0x0000, 0x8114},       /* Software GPIO output data */
        {0x0000, 0x8114},

        {0x0003, 0x8111},
        {0x0000, 0x8111},
        {0x0090, 0x8110},    /* Enable: SSI output, External 2X clock output */
        {0x0020, 0x8112},
        {0x0000, 0x8114},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0001, 0x8114},
        {0x0003, 0x8114},

        {0x000f, 0x8402},       /* Memory bank Address */
        {0x0000, 0x8403},       /* Memory bank Address */
        {0x00ba, 0x8804},       /* SSI Slave address */
        {0x0010, 0x8802},       /* 93.75kHz SSI Clock Two DataByte */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},       /* Will write 2 bytes (DATA1+DATA2) */
        {0x0020, 0x8801},       /* Register address for SSI read/write */
        {0x0044, 0x8805},       /* DATA2 */
        {0x0004, 0x8800},       /* DATA1 -> write triggered */
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0009, 0x8801},
        {0x0042, 0x8805},
        {0x0001, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x003c, 0x8801},
        {0x0001, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0001, 0x8801},
        {0x000a, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0002, 0x8801},
        {0x0000, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0003, 0x8801},
        {0x0027, 0x8805},
        {0x0001, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0004, 0x8801},
        {0x0065, 0x8805},
        {0x0001, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0005, 0x8801},
        {0x0003, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0006, 0x8801},
        {0x001c, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0007, 0x8801},
        {0x002a, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x000e, 0x8801},
        {0x0000, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0028, 0x8801},
        {0x002e, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0039, 0x8801},
        {0x0013, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x003b, 0x8801},
        {0x000c, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0035, 0x8801},
        {0x0028, 0x8805},
        {0x0000, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        /* READ { 0x0001, 0x8803 } -> 0000: 00  */
        /* READ { 0x0001, 0x8802 } -> 0000: 10  */
        {0x0010, 0x8802},
        {0x0009, 0x8801},
        {0x0042, 0x8805},
        {0x0001, 0x8800},
        /* READ { 0x0001, 0x8803 } -> 0000: 00  */

        {0x0050, 0x8703},
        {0x0002, 0x8704},       /* External input CKIx1 */
        {0x0001, 0x870c},       /* Select CKOx2 output */
        {0x009a, 0x8600},       /* Line memory Read Counter (L) */
        {0x0001, 0x8606},    /* 1 Line memory Read Counter (H) Result: (d)410 */
        {0x0023, 0x8601},
        {0x0010, 0x8602},
        {0x000a, 0x8603},
        {0x009a, 0x8600},
        {0x0001, 0x865b},       /* 1 Horizontal Offset for Valid Pixel(L) */
        {0x0003, 0x865c},       /* Vertical offset for valid lines (L) */
        {0x0058, 0x865d},       /* Horizontal valid pixels window (L) */
        {0x0048, 0x865e},       /* Vertical valid lines window (L) */
        {0x0000, 0x865f},

        {0x0006, 0x8660},
                    /* Enable nibble data input, select nibble input order */

        {0x0013, 0x8608},       /* A11 Coeficients for color correction */
        {0x0028, 0x8609},
                    /* Note: these values are confirmed at the end of array */
        {0x0005, 0x860a},       /* ... */
        {0x0025, 0x860b},
        {0x00e1, 0x860c},
        {0x00fa, 0x860d},
        {0x00f4, 0x860e},
        {0x00e8, 0x860f},
        {0x0025, 0x8610},       /* A33 Coef. */
        {0x00fc, 0x8611},       /* White balance offset: R */
        {0x0001, 0x8612},       /* White balance offset: Gr */
        {0x00fe, 0x8613},       /* White balance offset: B */
        {0x0000, 0x8614},       /* White balance offset: Gb */

        {0x0064, 0x8651},       /* R gain for white balance (L) */
        {0x0040, 0x8652},       /* Gr gain for white balance (L) */
        {0x0066, 0x8653},       /* B gain for white balance (L) */
        {0x0040, 0x8654},       /* Gb gain for white balance (L) */
        {0x0001, 0x863f},       /* Enable fixed gamma correction */

        {0x00a1, 0x8656},       /* Size - Window1: 256x256, Window2: 128x128,
                                 * UV division: UV no change,
                                 * Enable New edge enhancement */
        {0x0018, 0x8657},       /* Edge gain high threshold */
        {0x0020, 0x8658},       /* Edge gain low threshold */
        {0x000a, 0x8659},       /* Edge bandwidth high threshold */
        {0x0005, 0x865a},       /* Edge bandwidth low threshold */
        {0x0064, 0x8607},       /* UV filter enable */

        {0x0016, 0x8660},
        {0x0000, 0x86b0},       /* Bad pixels compensation address */
        {0x00dc, 0x86b1},       /* X coord for bad pixels compensation (L) */
        {0x0000, 0x86b2},
        {0x0009, 0x86b3},       /* Y coord for bad pixels compensation (L) */
        {0x0000, 0x86b4},

        {0x0001, 0x86b0},
        {0x00f5, 0x86b1},
        {0x0000, 0x86b2},
        {0x00c6, 0x86b3},
        {0x0000, 0x86b4},

        {0x0002, 0x86b0},
        {0x001c, 0x86b1},
        {0x0001, 0x86b2},
        {0x00d7, 0x86b3},
        {0x0000, 0x86b4},

        {0x0003, 0x86b0},
        {0x001c, 0x86b1},
        {0x0001, 0x86b2},
        {0x00d8, 0x86b3},
        {0x0000, 0x86b4},

        {0x0004, 0x86b0},
        {0x001d, 0x86b1},
        {0x0001, 0x86b2},
        {0x00d8, 0x86b3},
        {0x0000, 0x86b4},
        {0x001e, 0x8660},

        /* READ { 0x0000, 0x8608 } -> 0000: 13  */
        /* READ { 0x0000, 0x8609 } -> 0000: 28  */
        /* READ { 0x0000, 0x8610 } -> 0000: 05  */
        /* READ { 0x0000, 0x8611 } -> 0000: 25  */
        /* READ { 0x0000, 0x8612 } -> 0000: e1  */
        /* READ { 0x0000, 0x8613 } -> 0000: fa  */
        /* READ { 0x0000, 0x8614 } -> 0000: f4  */
        /* READ { 0x0000, 0x8615 } -> 0000: e8  */
        /* READ { 0x0000, 0x8616 } -> 0000: 25  */
        {}
};

static int reg_write(struct gspca_dev *gspca_dev, u16 index, u16 value)
{
        int ret;
        struct usb_device *dev = gspca_dev->dev;

        ret = usb_control_msg(dev,
                        usb_sndctrlpipe(dev, 0),
                        0,              /* request */
                        USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        value, index, NULL, 0, 500);
        gspca_dbg(gspca_dev, D_USBO, "reg write i:0x%04x = 0x%02x\n",
                  index, value);
        if (ret < 0)
                pr_err("reg write: error %d\n", ret);
        return ret;
}

/* read 1 byte */
/* returns: negative is error, pos or zero is data */
static int reg_read(struct gspca_dev *gspca_dev,
                        u16 index)      /* wIndex */
{
        int ret;

        ret = usb_control_msg(gspca_dev->dev,
                        usb_rcvctrlpipe(gspca_dev->dev, 0),
                        0,                      /* register */
                        USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        0,              /* value */
                        index,
                        gspca_dev->usb_buf, 1,
                        500);                   /* timeout */
        gspca_dbg(gspca_dev, D_USBI, "reg read i:%04x --> %02x\n",
                  index, gspca_dev->usb_buf[0]);
        if (ret < 0) {
                pr_err("reg_read err %d\n", ret);
                return ret;
        }
        return gspca_dev->usb_buf[0];
}

/* send 1 or 2 bytes to the sensor via the Synchronous Serial Interface */
static int ssi_w(struct gspca_dev *gspca_dev,
                u16 reg, u16 val)
{
        int ret, retry;

        ret = reg_write(gspca_dev, 0x8802, reg >> 8);
        if (ret < 0)
                goto out;
        ret = reg_write(gspca_dev, 0x8801, reg & 0x00ff);
        if (ret < 0)
                goto out;
        if ((reg & 0xff00) == 0x1000) {         /* if 2 bytes */
                ret = reg_write(gspca_dev, 0x8805, val & 0x00ff);
                if (ret < 0)
                        goto out;
                val >>= 8;
        }
        ret = reg_write(gspca_dev, 0x8800, val);
        if (ret < 0)
                goto out;

        /* poll until not busy */
        retry = 10;
        for (;;) {
                ret = reg_read(gspca_dev, 0x8803);
                if (ret < 0)
                        break;
                if (gspca_dev->usb_buf[0] == 0)
                        break;
                if (--retry <= 0) {
                        gspca_err(gspca_dev, "ssi_w busy %02x\n",
                                  gspca_dev->usb_buf[0]);
                        ret = -1;
                        break;
                }
                msleep(8);
        }

out:
        return ret;
}

static int write_vector(struct gspca_dev *gspca_dev,
                        const u16 (*data)[2])
{
        int ret = 0;

        while ((*data)[1] != 0) {
                if ((*data)[1] & 0x8000) {
                        if ((*data)[1] == 0xdd00)       /* delay */
                                msleep((*data)[0]);
                        else
                                ret = reg_write(gspca_dev, (*data)[1],
                                                                (*data)[0]);
                } else {
                        ret = ssi_w(gspca_dev, (*data)[1], (*data)[0]);
                }
                if (ret < 0)
                        break;
                data++;
        }
        return ret;
}

/* 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;
        const u16 (*init_data)[2];
        static const u16 (*(init_data_tb[]))[2] = {
                spca508_vista_init_data,        /* CreativeVista 0 */
                spca508_sightcam_init_data,     /* HamaUSBSightcam 1 */
                spca508_sightcam2_init_data,    /* HamaUSBSightcam2 2 */
                spca508cs110_init_data,         /* IntelEasyPCCamera 3 */
                spca508cs110_init_data,         /* MicroInnovationIC200 4 */
                spca508_init_data,              /* ViewQuestVQ110 5 */
        };
        int data1, data2;

        /* Read from global register the USB product and vendor IDs, just to
         * prove that we can communicate with the device.  This works, which
         * confirms at we are communicating properly and that the device
         * is a 508. */
        data1 = reg_read(gspca_dev, 0x8104);
        data2 = reg_read(gspca_dev, 0x8105);
        gspca_dbg(gspca_dev, D_PROBE, "Webcam Vendor ID: 0x%02x%02x\n",
                  data2, data1);

        data1 = reg_read(gspca_dev, 0x8106);
        data2 = reg_read(gspca_dev, 0x8107);
        gspca_dbg(gspca_dev, D_PROBE, "Webcam Product ID: 0x%02x%02x\n",
                  data2, data1);

        data1 = reg_read(gspca_dev, 0x8621);
        gspca_dbg(gspca_dev, D_PROBE, "Window 1 average luminance: %d\n",
                  data1);

        cam = &gspca_dev->cam;
        cam->cam_mode = sif_mode;
        cam->nmodes = ARRAY_SIZE(sif_mode);

        sd->subtype = id->driver_info;

        init_data = init_data_tb[sd->subtype];
        return write_vector(gspca_dev, init_data);
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
        return 0;
}

static int sd_start(struct gspca_dev *gspca_dev)
{
        int mode;

        mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
        reg_write(gspca_dev, 0x8500, mode);
        switch (mode) {
        case 0:
        case 1:
                reg_write(gspca_dev, 0x8700, 0x28); /* clock */
                break;
        default:
/*      case 2: */
/*      case 3: */
                reg_write(gspca_dev, 0x8700, 0x23); /* clock */
                break;
        }
        reg_write(gspca_dev, 0x8112, 0x10 | 0x20);
        return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
        /* Video ISO disable, Video Drop Packet enable: */
        reg_write(gspca_dev, 0x8112, 0x20);
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
                        u8 *data,                       /* isoc packet */
                        int len)                        /* iso packet length */
{
        switch (data[0]) {
        case 0:                         /* start of frame */
                gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
                data += SPCA508_OFFSET_DATA;
                len -= SPCA508_OFFSET_DATA;
                gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
                break;
        case 0xff:                      /* drop */
                break;
        default:
                data += 1;
                len -= 1;
                gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
                break;
        }
}

static void setbrightness(struct gspca_dev *gspca_dev, s32 brightness)
{
        /* MX seem contrast */
        reg_write(gspca_dev, 0x8651, brightness);
        reg_write(gspca_dev, 0x8652, brightness);
        reg_write(gspca_dev, 0x8653, brightness);
        reg_write(gspca_dev, 0x8654, brightness);
}

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

        gspca_dev->usb_err = 0;

        if (!gspca_dev->streaming)
                return 0;

        switch (ctrl->id) {
        case V4L2_CID_BRIGHTNESS:
                setbrightness(gspca_dev, ctrl->val);
                break;
        }
        return gspca_dev->usb_err;
}

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

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

        gspca_dev->vdev.ctrl_handler = hdl;
        v4l2_ctrl_handler_init(hdl, 5);
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);

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

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

/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
        {USB_DEVICE(0x0130, 0x0130), .driver_info = HamaUSBSightcam},
        {USB_DEVICE(0x041e, 0x4018), .driver_info = CreativeVista},
        {USB_DEVICE(0x0733, 0x0110), .driver_info = ViewQuestVQ110},
        {USB_DEVICE(0x0af9, 0x0010), .driver_info = HamaUSBSightcam},
        {USB_DEVICE(0x0af9, 0x0011), .driver_info = HamaUSBSightcam2},
        {USB_DEVICE(0x8086, 0x0110), .driver_info = IntelEasyPCCamera},
        {}
};
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);