// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * SPCA500 chip based cameras initialization data
 *
 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "spca500"

#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA/SPCA500 USB Camera Driver");
MODULE_LICENSE("GPL");

#define QUALITY 85

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

        char subtype;
#define AgfaCl20 0
#define AiptekPocketDV 1
#define BenqDC1016 2
#define CreativePCCam300 3
#define DLinkDSC350 4
#define Gsmartmini 5
#define IntelPocketPCCamera 6
#define KodakEZ200 7
#define LogitechClickSmart310 8
#define LogitechClickSmart510 9
#define LogitechTraveler 10
#define MustekGsmart300 11
#define Optimedia 12
#define PalmPixDC85 13
#define ToptroIndus 14

        u8 jpeg_hdr[JPEG_HDR_SZ];
};

static const struct v4l2_pix_format vga_mode[] = {
        {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,
                .sizeimage = 640 * 480 * 3 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 0},
};

static const struct v4l2_pix_format sif_mode[] = {
        {176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 176,
                .sizeimage = 176 * 144 * 3 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 1},
        {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 352,
                .sizeimage = 352 * 288 * 3 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 0},
};

/* Frame packet header offsets for the spca500 */
#define SPCA500_OFFSET_PADDINGLB 2
#define SPCA500_OFFSET_PADDINGHB 3
#define SPCA500_OFFSET_MODE      4
#define SPCA500_OFFSET_IMGWIDTH  5
#define SPCA500_OFFSET_IMGHEIGHT 6
#define SPCA500_OFFSET_IMGMODE   7
#define SPCA500_OFFSET_QTBLINDEX 8
#define SPCA500_OFFSET_FRAMSEQ   9
#define SPCA500_OFFSET_CDSPINFO  10
#define SPCA500_OFFSET_GPIO      11
#define SPCA500_OFFSET_AUGPIO    12
#define SPCA500_OFFSET_DATA      16


static const __u16 spca500_visual_defaults[][3] = {
        {0x00, 0x0003, 0x816b}, /* SSI not active sync with vsync,
                                 * hue (H byte) = 0,
                                 * saturation/hue enable,
                                 * brightness/contrast enable.
                                 */
        {0x00, 0x0000, 0x8167}, /* brightness = 0 */
        {0x00, 0x0020, 0x8168}, /* contrast = 0 */
        {0x00, 0x0003, 0x816b}, /* SSI not active sync with vsync,
                                 * hue (H byte) = 0, saturation/hue enable,
                                 * brightness/contrast enable.
                                 * was 0x0003, now 0x0000.
                                 */
        {0x00, 0x0000, 0x816a}, /* hue (L byte) = 0 */
        {0x00, 0x0020, 0x8169}, /* saturation = 0x20 */
        {0x00, 0x0050, 0x8157}, /* edge gain high threshold */
        {0x00, 0x0030, 0x8158}, /* edge gain low threshold */
        {0x00, 0x0028, 0x8159}, /* edge bandwidth high threshold */
        {0x00, 0x000a, 0x815a}, /* edge bandwidth low threshold */
        {0x00, 0x0001, 0x8202}, /* clock rate compensation = 1/25 sec/frame */
        {0x0c, 0x0004, 0x0000},
        /* set interface */
        {}
};
static const __u16 Clicksmart510_defaults[][3] = {
        {0x00, 0x00, 0x8211},
        {0x00, 0x01, 0x82c0},
        {0x00, 0x10, 0x82cb},
        {0x00, 0x0f, 0x800d},
        {0x00, 0x82, 0x8225},
        {0x00, 0x21, 0x8228},
        {0x00, 0x00, 0x8203},
        {0x00, 0x00, 0x8204},
        {0x00, 0x08, 0x8205},
        {0x00, 0xf8, 0x8206},
        {0x00, 0x28, 0x8207},
        {0x00, 0xa0, 0x8208},
        {0x00, 0x08, 0x824a},
        {0x00, 0x08, 0x8214},
        {0x00, 0x80, 0x82c1},
        {0x00, 0x00, 0x82c2},
        {0x00, 0x00, 0x82ca},
        {0x00, 0x80, 0x82c1},
        {0x00, 0x04, 0x82c2},
        {0x00, 0x00, 0x82ca},
        {0x00, 0xfc, 0x8100},
        {0x00, 0xfc, 0x8105},
        {0x00, 0x30, 0x8101},
        {0x00, 0x00, 0x8102},
        {0x00, 0x00, 0x8103},
        {0x00, 0x66, 0x8107},
        {0x00, 0x00, 0x816b},
        {0x00, 0x00, 0x8155},
        {0x00, 0x01, 0x8156},
        {0x00, 0x60, 0x8157},
        {0x00, 0x40, 0x8158},
        {0x00, 0x0a, 0x8159},
        {0x00, 0x06, 0x815a},
        {0x00, 0x00, 0x813f},
        {0x00, 0x00, 0x8200},
        {0x00, 0x19, 0x8201},
        {0x00, 0x00, 0x82c1},
        {0x00, 0xa0, 0x82c2},
        {0x00, 0x00, 0x82ca},
        {0x00, 0x00, 0x8117},
        {0x00, 0x00, 0x8118},
        {0x00, 0x65, 0x8119},
        {0x00, 0x00, 0x811a},
        {0x00, 0x00, 0x811b},
        {0x00, 0x55, 0x811c},
        {0x00, 0x65, 0x811d},
        {0x00, 0x55, 0x811e},
        {0x00, 0x16, 0x811f},
        {0x00, 0x19, 0x8120},
        {0x00, 0x80, 0x8103},
        {0x00, 0x83, 0x816b},
        {0x00, 0x25, 0x8168},
        {0x00, 0x01, 0x820f},
        {0x00, 0xff, 0x8115},
        {0x00, 0x48, 0x8116},
        {0x00, 0x50, 0x8151},
        {0x00, 0x40, 0x8152},
        {0x00, 0x78, 0x8153},
        {0x00, 0x40, 0x8154},
        {0x00, 0x00, 0x8167},
        {0x00, 0x20, 0x8168},
        {0x00, 0x00, 0x816a},
        {0x00, 0x03, 0x816b},
        {0x00, 0x20, 0x8169},
        {0x00, 0x60, 0x8157},
        {0x00, 0x00, 0x8190},
        {0x00, 0x00, 0x81a1},
        {0x00, 0x00, 0x81b2},
        {0x00, 0x27, 0x8191},
        {0x00, 0x27, 0x81a2},
        {0x00, 0x27, 0x81b3},
        {0x00, 0x4b, 0x8192},
        {0x00, 0x4b, 0x81a3},
        {0x00, 0x4b, 0x81b4},
        {0x00, 0x66, 0x8193},
        {0x00, 0x66, 0x81a4},
        {0x00, 0x66, 0x81b5},
        {0x00, 0x79, 0x8194},
        {0x00, 0x79, 0x81a5},
        {0x00, 0x79, 0x81b6},
        {0x00, 0x8a, 0x8195},
        {0x00, 0x8a, 0x81a6},
        {0x00, 0x8a, 0x81b7},
        {0x00, 0x9b, 0x8196},
        {0x00, 0x9b, 0x81a7},
        {0x00, 0x9b, 0x81b8},
        {0x00, 0xa6, 0x8197},
        {0x00, 0xa6, 0x81a8},
        {0x00, 0xa6, 0x81b9},
        {0x00, 0xb2, 0x8198},
        {0x00, 0xb2, 0x81a9},
        {0x00, 0xb2, 0x81ba},
        {0x00, 0xbe, 0x8199},
        {0x00, 0xbe, 0x81aa},
        {0x00, 0xbe, 0x81bb},
        {0x00, 0xc8, 0x819a},
        {0x00, 0xc8, 0x81ab},
        {0x00, 0xc8, 0x81bc},
        {0x00, 0xd2, 0x819b},
        {0x00, 0xd2, 0x81ac},
        {0x00, 0xd2, 0x81bd},
        {0x00, 0xdb, 0x819c},
        {0x00, 0xdb, 0x81ad},
        {0x00, 0xdb, 0x81be},
        {0x00, 0xe4, 0x819d},
        {0x00, 0xe4, 0x81ae},
        {0x00, 0xe4, 0x81bf},
        {0x00, 0xed, 0x819e},
        {0x00, 0xed, 0x81af},
        {0x00, 0xed, 0x81c0},
        {0x00, 0xf7, 0x819f},
        {0x00, 0xf7, 0x81b0},
        {0x00, 0xf7, 0x81c1},
        {0x00, 0xff, 0x81a0},
        {0x00, 0xff, 0x81b1},
        {0x00, 0xff, 0x81c2},
        {0x00, 0x03, 0x8156},
        {0x00, 0x00, 0x8211},
        {0x00, 0x20, 0x8168},
        {0x00, 0x01, 0x8202},
        {0x00, 0x30, 0x8101},
        {0x00, 0x00, 0x8111},
        {0x00, 0x00, 0x8112},
        {0x00, 0x00, 0x8113},
        {0x00, 0x00, 0x8114},
        {}
};

static const __u8 qtable_creative_pccam[2][64] = {
        {                               /* Q-table Y-components */
         0x05, 0x03, 0x03, 0x05, 0x07, 0x0c, 0x0f, 0x12,
         0x04, 0x04, 0x04, 0x06, 0x08, 0x11, 0x12, 0x11,
         0x04, 0x04, 0x05, 0x07, 0x0c, 0x11, 0x15, 0x11,
         0x04, 0x05, 0x07, 0x09, 0x0f, 0x1a, 0x18, 0x13,
         0x05, 0x07, 0x0b, 0x11, 0x14, 0x21, 0x1f, 0x17,
         0x07, 0x0b, 0x11, 0x13, 0x18, 0x1f, 0x22, 0x1c,
         0x0f, 0x13, 0x17, 0x1a, 0x1f, 0x24, 0x24, 0x1e,
         0x16, 0x1c, 0x1d, 0x1d, 0x22, 0x1e, 0x1f, 0x1e},
        {                               /* Q-table C-components */
         0x05, 0x05, 0x07, 0x0e, 0x1e, 0x1e, 0x1e, 0x1e,
         0x05, 0x06, 0x08, 0x14, 0x1e, 0x1e, 0x1e, 0x1e,
         0x07, 0x08, 0x11, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
         0x0e, 0x14, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
         0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
         0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
         0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e,
         0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e}
};

static const __u8 qtable_kodak_ez200[2][64] = {
        {                               /* Q-table Y-components */
         0x02, 0x01, 0x01, 0x02, 0x02, 0x04, 0x05, 0x06,
         0x01, 0x01, 0x01, 0x02, 0x03, 0x06, 0x06, 0x06,
         0x01, 0x01, 0x02, 0x02, 0x04, 0x06, 0x07, 0x06,
         0x01, 0x02, 0x02, 0x03, 0x05, 0x09, 0x08, 0x06,
         0x02, 0x02, 0x04, 0x06, 0x07, 0x0b, 0x0a, 0x08,
         0x02, 0x04, 0x06, 0x06, 0x08, 0x0a, 0x0b, 0x09,
         0x05, 0x06, 0x08, 0x09, 0x0a, 0x0c, 0x0c, 0x0a,
         0x07, 0x09, 0x0a, 0x0a, 0x0b, 0x0a, 0x0a, 0x0a},
        {                               /* Q-table C-components */
         0x02, 0x02, 0x02, 0x05, 0x0a, 0x0a, 0x0a, 0x0a,
         0x02, 0x02, 0x03, 0x07, 0x0a, 0x0a, 0x0a, 0x0a,
         0x02, 0x03, 0x06, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
         0x05, 0x07, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
         0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
         0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
         0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
         0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a}
};

static const __u8 qtable_pocketdv[2][64] = {
        {               /* Q-table Y-components start registers 0x8800 */
         0x06, 0x04, 0x04, 0x06, 0x0a, 0x10, 0x14, 0x18,
         0x05, 0x05, 0x06, 0x08, 0x0a, 0x17, 0x18, 0x16,
         0x06, 0x05, 0x06, 0x0a, 0x10, 0x17, 0x1c, 0x16,
         0x06, 0x07, 0x09, 0x0c, 0x14, 0x23, 0x20, 0x19,
         0x07, 0x09, 0x0f, 0x16, 0x1b, 0x2c, 0x29, 0x1f,
         0x0a, 0x0e, 0x16, 0x1a, 0x20, 0x2a, 0x2d, 0x25,
         0x14, 0x1a, 0x1f, 0x23, 0x29, 0x30, 0x30, 0x28,
         0x1d, 0x25, 0x26, 0x27, 0x2d, 0x28, 0x29, 0x28,
         },
        {               /* Q-table C-components start registers 0x8840 */
         0x07, 0x07, 0x0a, 0x13, 0x28, 0x28, 0x28, 0x28,
         0x07, 0x08, 0x0a, 0x1a, 0x28, 0x28, 0x28, 0x28,
         0x0a, 0x0a, 0x16, 0x28, 0x28, 0x28, 0x28, 0x28,
         0x13, 0x1a, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
         0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
         0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
         0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28,
         0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28}
};

/* read 'len' bytes to gspca_dev->usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
                  __u16 index,
                  __u16 length)
{
        usb_control_msg(gspca_dev->dev,
                        usb_rcvctrlpipe(gspca_dev->dev, 0),
                        0,
                        USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        0,              /* value */
                        index, gspca_dev->usb_buf, length, 500);
}

static int reg_w(struct gspca_dev *gspca_dev,
                     __u16 req, __u16 index, __u16 value)
{
        int ret;

        gspca_dbg(gspca_dev, D_USBO, "reg write: [0x%02x] = 0x%02x\n",
                  index, value);
        ret = usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        req,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        value, index, NULL, 0, 500);
        if (ret < 0)
                pr_err("reg write: error %d\n", ret);
        return ret;
}

/* returns: negative is error, pos or zero is data */
static int reg_r_12(struct gspca_dev *gspca_dev,
                        __u16 req,      /* bRequest */
                        __u16 index,    /* wIndex */
                        __u16 length)   /* wLength (1 or 2 only) */
{
        int ret;

        gspca_dev->usb_buf[1] = 0;
        ret = usb_control_msg(gspca_dev->dev,
                        usb_rcvctrlpipe(gspca_dev->dev, 0),
                        req,
                        USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        0,              /* value */
                        index,
                        gspca_dev->usb_buf, length,
                        500);           /* timeout */
        if (ret < 0) {
                pr_err("reg_r_12 err %d\n", ret);
                return ret;
        }
        return (gspca_dev->usb_buf[1] << 8) + gspca_dev->usb_buf[0];
}

/*
 * Simple function to wait for a given 8-bit value to be returned from
 * a reg_read call.
 * Returns: negative is error or timeout, zero is success.
 */
static int reg_r_wait(struct gspca_dev *gspca_dev,
                        __u16 reg, __u16 index, __u16 value)
{
        int ret, cnt = 20;

        while (--cnt > 0) {
                ret = reg_r_12(gspca_dev, reg, index, 1);
                if (ret == value)
                        return 0;
                msleep(50);
        }
        return -EIO;
}

static int write_vector(struct gspca_dev *gspca_dev,
                        const __u16 data[][3])
{
        int ret, i = 0;

        while (data[i][0] != 0 || data[i][1] != 0 || data[i][2] != 0) {
                ret = reg_w(gspca_dev, data[i][0], data[i][2], data[i][1]);
                if (ret < 0)
                        return ret;
                i++;
        }
        return 0;
}

static int spca50x_setup_qtable(struct gspca_dev *gspca_dev,
                                unsigned int request,
                                unsigned int ybase,
                                unsigned int cbase,
                                const __u8 qtable[2][64])
{
        int i, err;

        /* loop over y components */
        for (i = 0; i < 64; i++) {
                err = reg_w(gspca_dev, request, ybase + i, qtable[0][i]);
                if (err < 0)
                        return err;
        }

        /* loop over c components */
        for (i = 0; i < 64; i++) {
                err = reg_w(gspca_dev, request, cbase + i, qtable[1][i]);
                if (err < 0)
                        return err;
        }
        return 0;
}

static void spca500_ping310(struct gspca_dev *gspca_dev)
{
        reg_r(gspca_dev, 0x0d04, 2);
        gspca_dbg(gspca_dev, D_STREAM, "ClickSmart310 ping 0x0d04 0x%02x 0x%02x\n",
                  gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
}

static void spca500_clksmart310_init(struct gspca_dev *gspca_dev)
{
        reg_r(gspca_dev, 0x0d05, 2);
        gspca_dbg(gspca_dev, D_STREAM, "ClickSmart310 init 0x0d05 0x%02x 0x%02x\n",
                  gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
        reg_w(gspca_dev, 0x00, 0x8167, 0x5a);
        spca500_ping310(gspca_dev);

        reg_w(gspca_dev, 0x00, 0x8168, 0x22);
        reg_w(gspca_dev, 0x00, 0x816a, 0xc0);
        reg_w(gspca_dev, 0x00, 0x816b, 0x0b);
        reg_w(gspca_dev, 0x00, 0x8169, 0x25);
        reg_w(gspca_dev, 0x00, 0x8157, 0x5b);
        reg_w(gspca_dev, 0x00, 0x8158, 0x5b);
        reg_w(gspca_dev, 0x00, 0x813f, 0x03);
        reg_w(gspca_dev, 0x00, 0x8151, 0x4a);
        reg_w(gspca_dev, 0x00, 0x8153, 0x78);
        reg_w(gspca_dev, 0x00, 0x0d01, 0x04);
                                                /* 00 for adjust shutter */
        reg_w(gspca_dev, 0x00, 0x0d02, 0x01);
        reg_w(gspca_dev, 0x00, 0x8169, 0x25);
        reg_w(gspca_dev, 0x00, 0x0d01, 0x02);
}

static void spca500_setmode(struct gspca_dev *gspca_dev,
                        __u8 xmult, __u8 ymult)
{
        int mode;

        /* set x multiplier */
        reg_w(gspca_dev, 0, 0x8001, xmult);

        /* set y multiplier */
        reg_w(gspca_dev, 0, 0x8002, ymult);

        /* use compressed mode, VGA, with mode specific subsample */
        mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
        reg_w(gspca_dev, 0, 0x8003, mode << 4);
}

static int spca500_full_reset(struct gspca_dev *gspca_dev)
{
        int err;

        /* send the reset command */
        err = reg_w(gspca_dev, 0xe0, 0x0001, 0x0000);
        if (err < 0)
                return err;

        /* wait for the reset to complete */
        err = reg_r_wait(gspca_dev, 0x06, 0x0000, 0x0000);
        if (err < 0)
                return err;
        err = reg_w(gspca_dev, 0xe0, 0x0000, 0x0000);
        if (err < 0)
                return err;
        err = reg_r_wait(gspca_dev, 0x06, 0, 0);
        if (err < 0) {
                gspca_err(gspca_dev, "reg_r_wait() failed\n");
                return err;
        }
        /* all ok */
        return 0;
}

/* Synchro the Bridge with sensor */
/* Maybe that will work on all spca500 chip */
/* because i only own a clicksmart310 try for that chip */
/* using spca50x_set_packet_size() cause an Ooops here */
/* usb_set_interface from kernel 2.6.x clear all the urb stuff */
/* up-port the same feature as in 2.4.x kernel */
static int spca500_synch310(struct gspca_dev *gspca_dev)
{
        if (usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0) < 0) {
                gspca_err(gspca_dev, "Set packet size: set interface error\n");
                goto error;
        }
        spca500_ping310(gspca_dev);

        reg_r(gspca_dev, 0x0d00, 1);

        /* need alt setting here */
        gspca_dbg(gspca_dev, D_PACK, "ClickSmart310 sync alt: %d\n",
                  gspca_dev->alt);

        /* Windoze use pipe with altsetting 6 why 7 here */
        if (usb_set_interface(gspca_dev->dev,
                                gspca_dev->iface,
                                gspca_dev->alt) < 0) {
                gspca_err(gspca_dev, "Set packet size: set interface error\n");
                goto error;
        }
        return 0;
error:
        return -EBUSY;
}

static void spca500_reinit(struct gspca_dev *gspca_dev)
{
        int err;
        __u8 Data;

        /* some unknown command from Aiptek pocket dv and family300 */

        reg_w(gspca_dev, 0x00, 0x0d01, 0x01);
        reg_w(gspca_dev, 0x00, 0x0d03, 0x00);
        reg_w(gspca_dev, 0x00, 0x0d02, 0x01);

        /* enable drop packet */
        reg_w(gspca_dev, 0x00, 0x850a, 0x0001);

        err = spca50x_setup_qtable(gspca_dev, 0x00, 0x8800, 0x8840,
                                 qtable_pocketdv);
        if (err < 0)
                gspca_err(gspca_dev, "spca50x_setup_qtable failed on init\n");

        /* set qtable index */
        reg_w(gspca_dev, 0x00, 0x8880, 2);
        /* family cam Quicksmart stuff */
        reg_w(gspca_dev, 0x00, 0x800a, 0x00);
        /* Set agc transfer: synced between frames */
        reg_w(gspca_dev, 0x00, 0x820f, 0x01);
        /* Init SDRAM - needed for SDRAM access */
        reg_w(gspca_dev, 0x00, 0x870a, 0x04);
        /*Start init sequence or stream */
        reg_w(gspca_dev, 0, 0x8003, 0x00);
        /* switch to video camera mode */
        reg_w(gspca_dev, 0x00, 0x8000, 0x0004);
        msleep(2000);
        if (reg_r_wait(gspca_dev, 0, 0x8000, 0x44) != 0) {
                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);
        }
}

/* 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;

        cam = &gspca_dev->cam;
        sd->subtype = id->driver_info;
        if (sd->subtype != LogitechClickSmart310) {
                cam->cam_mode = vga_mode;
                cam->nmodes = ARRAY_SIZE(vga_mode);
        } else {
                cam->cam_mode = sif_mode;
                cam->nmodes = ARRAY_SIZE(sif_mode);
        }
        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;

        /* initialisation of spca500 based cameras is deferred */
        gspca_dbg(gspca_dev, D_STREAM, "SPCA500 init\n");
        if (sd->subtype == LogitechClickSmart310)
                spca500_clksmart310_init(gspca_dev);
/*      else
                spca500_initialise(gspca_dev); */
        gspca_dbg(gspca_dev, D_STREAM, "SPCA500 init done\n");
        return 0;
}

static int sd_start(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int err;
        __u8 Data;
        __u8 xmult, ymult;

        /* create the JPEG header */
        jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
                        gspca_dev->pixfmt.width,
                        0x22);          /* JPEG 411 */
        jpeg_set_qual(sd->jpeg_hdr, QUALITY);

        if (sd->subtype == LogitechClickSmart310) {
                xmult = 0x16;
                ymult = 0x12;
        } else {
                xmult = 0x28;
                ymult = 0x1e;
        }

        /* is there a sensor here ? */
        reg_r(gspca_dev, 0x8a04, 1);
        gspca_dbg(gspca_dev, D_STREAM, "Spca500 Sensor Address 0x%02x\n",
                  gspca_dev->usb_buf[0]);
        gspca_dbg(gspca_dev, D_STREAM, "Spca500 curr_mode: %d Xmult: 0x%02x, Ymult: 0x%02x",
                  gspca_dev->curr_mode, xmult, ymult);

        /* setup qtable */
        switch (sd->subtype) {
        case LogitechClickSmart310:
                 spca500_setmode(gspca_dev, xmult, ymult);

                /* enable drop packet */
                reg_w(gspca_dev, 0x00, 0x850a, 0x0001);
                reg_w(gspca_dev, 0x00, 0x8880, 3);
                err = spca50x_setup_qtable(gspca_dev,
                                           0x00, 0x8800, 0x8840,
                                           qtable_creative_pccam);
                if (err < 0)
                        gspca_err(gspca_dev, "spca50x_setup_qtable failed\n");
                /* Init SDRAM - needed for SDRAM access */
                reg_w(gspca_dev, 0x00, 0x870a, 0x04);

                /* switch to video camera mode */
                reg_w(gspca_dev, 0x00, 0x8000, 0x0004);
                msleep(500);
                if (reg_r_wait(gspca_dev, 0, 0x8000, 0x44) != 0)
                        gspca_err(gspca_dev, "reg_r_wait() failed\n");

                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);

                spca500_synch310(gspca_dev);

                write_vector(gspca_dev, spca500_visual_defaults);
                spca500_setmode(gspca_dev, xmult, ymult);
                /* enable drop packet */
                err = reg_w(gspca_dev, 0x00, 0x850a, 0x0001);
                if (err < 0)
                        gspca_err(gspca_dev, "failed to enable drop packet\n");
                reg_w(gspca_dev, 0x00, 0x8880, 3);
                err = spca50x_setup_qtable(gspca_dev,
                                           0x00, 0x8800, 0x8840,
                                           qtable_creative_pccam);
                if (err < 0)
                        gspca_err(gspca_dev, "spca50x_setup_qtable failed\n");

                /* Init SDRAM - needed for SDRAM access */
                reg_w(gspca_dev, 0x00, 0x870a, 0x04);

                /* switch to video camera mode */
                reg_w(gspca_dev, 0x00, 0x8000, 0x0004);

                if (reg_r_wait(gspca_dev, 0, 0x8000, 0x44) != 0)
                        gspca_err(gspca_dev, "reg_r_wait() failed\n");

                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);
                break;
        case CreativePCCam300:          /* Creative PC-CAM 300 640x480 CCD */
        case IntelPocketPCCamera:       /* FIXME: Temporary fix for
                                         *      Intel Pocket PC Camera
                                         *      - NWG (Sat 29th March 2003) */

                /* do a full reset */
                err = spca500_full_reset(gspca_dev);
                if (err < 0)
                        gspca_err(gspca_dev, "spca500_full_reset failed\n");

                /* enable drop packet */
                err = reg_w(gspca_dev, 0x00, 0x850a, 0x0001);
                if (err < 0)
                        gspca_err(gspca_dev, "failed to enable drop packet\n");
                reg_w(gspca_dev, 0x00, 0x8880, 3);
                err = spca50x_setup_qtable(gspca_dev,
                                           0x00, 0x8800, 0x8840,
                                           qtable_creative_pccam);
                if (err < 0)
                        gspca_err(gspca_dev, "spca50x_setup_qtable failed\n");

                spca500_setmode(gspca_dev, xmult, ymult);
                reg_w(gspca_dev, 0x20, 0x0001, 0x0004);

                /* switch to video camera mode */
                reg_w(gspca_dev, 0x00, 0x8000, 0x0004);

                if (reg_r_wait(gspca_dev, 0, 0x8000, 0x44) != 0)
                        gspca_err(gspca_dev, "reg_r_wait() failed\n");

                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);

/*              write_vector(gspca_dev, spca500_visual_defaults); */
                break;
        case KodakEZ200:                /* Kodak EZ200 */

                /* do a full reset */
                err = spca500_full_reset(gspca_dev);
                if (err < 0)
                        gspca_err(gspca_dev, "spca500_full_reset failed\n");
                /* enable drop packet */
                reg_w(gspca_dev, 0x00, 0x850a, 0x0001);
                reg_w(gspca_dev, 0x00, 0x8880, 0);
                err = spca50x_setup_qtable(gspca_dev,
                                           0x00, 0x8800, 0x8840,
                                           qtable_kodak_ez200);
                if (err < 0)
                        gspca_err(gspca_dev, "spca50x_setup_qtable failed\n");
                spca500_setmode(gspca_dev, xmult, ymult);

                reg_w(gspca_dev, 0x20, 0x0001, 0x0004);

                /* switch to video camera mode */
                reg_w(gspca_dev, 0x00, 0x8000, 0x0004);

                if (reg_r_wait(gspca_dev, 0, 0x8000, 0x44) != 0)
                        gspca_err(gspca_dev, "reg_r_wait() failed\n");

                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);

/*              write_vector(gspca_dev, spca500_visual_defaults); */
                break;

        case BenqDC1016:
        case DLinkDSC350:               /* FamilyCam 300 */
        case AiptekPocketDV:            /* Aiptek PocketDV */
        case Gsmartmini:                /*Mustek Gsmart Mini */
        case MustekGsmart300:           /* Mustek Gsmart 300 */
        case PalmPixDC85:
        case Optimedia:
        case ToptroIndus:
        case AgfaCl20:
                spca500_reinit(gspca_dev);
                reg_w(gspca_dev, 0x00, 0x0d01, 0x01);
                /* enable drop packet */
                reg_w(gspca_dev, 0x00, 0x850a, 0x0001);

                err = spca50x_setup_qtable(gspca_dev,
                                   0x00, 0x8800, 0x8840, qtable_pocketdv);
                if (err < 0)
                        gspca_err(gspca_dev, "spca50x_setup_qtable failed\n");
                reg_w(gspca_dev, 0x00, 0x8880, 2);

                /* familycam Quicksmart pocketDV stuff */
                reg_w(gspca_dev, 0x00, 0x800a, 0x00);
                /* Set agc transfer: synced between frames */
                reg_w(gspca_dev, 0x00, 0x820f, 0x01);
                /* Init SDRAM - needed for SDRAM access */
                reg_w(gspca_dev, 0x00, 0x870a, 0x04);

                spca500_setmode(gspca_dev, xmult, ymult);
                /* switch to video camera mode */
                reg_w(gspca_dev, 0x00, 0x8000, 0x0004);

                reg_r_wait(gspca_dev, 0, 0x8000, 0x44);

                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);
                break;
        case LogitechTraveler:
        case LogitechClickSmart510:
                reg_w(gspca_dev, 0x02, 0x00, 0x00);
                /* enable drop packet */
                reg_w(gspca_dev, 0x00, 0x850a, 0x0001);

                err = spca50x_setup_qtable(gspca_dev,
                                        0x00, 0x8800,
                                        0x8840, qtable_creative_pccam);
                if (err < 0)
                        gspca_err(gspca_dev, "spca50x_setup_qtable failed\n");
                reg_w(gspca_dev, 0x00, 0x8880, 3);
                reg_w(gspca_dev, 0x00, 0x800a, 0x00);
                /* Init SDRAM - needed for SDRAM access */
                reg_w(gspca_dev, 0x00, 0x870a, 0x04);

                spca500_setmode(gspca_dev, xmult, ymult);

                /* switch to video camera mode */
                reg_w(gspca_dev, 0x00, 0x8000, 0x0004);
                reg_r_wait(gspca_dev, 0, 0x8000, 0x44);

                reg_r(gspca_dev, 0x816b, 1);
                Data = gspca_dev->usb_buf[0];
                reg_w(gspca_dev, 0x00, 0x816b, Data);
                write_vector(gspca_dev, Clicksmart510_defaults);
                break;
        }
        return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
        reg_w(gspca_dev, 0, 0x8003, 0x00);

        /* switch to video camera mode */
        reg_w(gspca_dev, 0x00, 0x8000, 0x0004);
        reg_r(gspca_dev, 0x8000, 1);
        gspca_dbg(gspca_dev, D_STREAM, "stop SPCA500 done reg8000: 0x%2x\n",
                  gspca_dev->usb_buf[0]);
}

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;
        static __u8 ffd9[] = {0xff, 0xd9};

/* frames are jpeg 4.1.1 without 0xff escape */
        if (data[0] == 0xff) {
                if (data[1] != 0x01) {  /* drop packet */
/*                      gspca_dev->last_packet_type = DISCARD_PACKET; */
                        return;
                }
                gspca_frame_add(gspca_dev, LAST_PACKET,
                                        ffd9, 2);

                /* put the JPEG header in the new frame */
                gspca_frame_add(gspca_dev, FIRST_PACKET,
                        sd->jpeg_hdr, JPEG_HDR_SZ);

                data += SPCA500_OFFSET_DATA;
                len -= SPCA500_OFFSET_DATA;
        } else {
                data += 1;
                len -= 1;
        }

        /* add 0x00 after 0xff */
        i = 0;
        do {
                if (data[i] == 0xff) {
                        gspca_frame_add(gspca_dev, INTER_PACKET,
                                        data, i + 1);
                        len -= i;
                        data += i;
                        *data = 0x00;
                        i = 0;
                }
                i++;
        } while (i < len);
        gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}

static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{
        reg_w(gspca_dev, 0x00, 0x8167,
                        (__u8) (val - 128));
}

static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
        reg_w(gspca_dev, 0x00, 0x8168, val);
}

static void setcolors(struct gspca_dev *gspca_dev, s32 val)
{
        reg_w(gspca_dev, 0x00, 0x8169, val);
}

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

        gspca_dev->usb_err = 0;

        if (!gspca_dev->streaming)
                return 0;

        switch (ctrl->id) {
        case V4L2_CID_BRIGHTNESS:
                setbrightness(gspca_dev, ctrl->val);
                break;
        case V4L2_CID_CONTRAST:
                setcontrast(gspca_dev, ctrl->val);
                break;
        case V4L2_CID_SATURATION:
                setcolors(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, 3);
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_CONTRAST, 0, 63, 1, 31);
        v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
                        V4L2_CID_SATURATION, 0, 63, 1, 31);

        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(0x040a, 0x0300), .driver_info = KodakEZ200},
        {USB_DEVICE(0x041e, 0x400a), .driver_info = CreativePCCam300},
        {USB_DEVICE(0x046d, 0x0890), .driver_info = LogitechTraveler},
        {USB_DEVICE(0x046d, 0x0900), .driver_info = LogitechClickSmart310},
        {USB_DEVICE(0x046d, 0x0901), .driver_info = LogitechClickSmart510},
        {USB_DEVICE(0x04a5, 0x300c), .driver_info = BenqDC1016},
        {USB_DEVICE(0x04fc, 0x7333), .driver_info = PalmPixDC85},
        {USB_DEVICE(0x055f, 0xc200), .driver_info = MustekGsmart300},
        {USB_DEVICE(0x055f, 0xc220), .driver_info = Gsmartmini},
        {USB_DEVICE(0x06bd, 0x0404), .driver_info = AgfaCl20},
        {USB_DEVICE(0x06be, 0x0800), .driver_info = Optimedia},
        {USB_DEVICE(0x084d, 0x0003), .driver_info = DLinkDSC350},
        {USB_DEVICE(0x08ca, 0x0103), .driver_info = AiptekPocketDV},
        {USB_DEVICE(0x2899, 0x012c), .driver_info = ToptroIndus},
        {USB_DEVICE(0x8086, 0x0630), .driver_info = IntelPocketPCCamera},
        {}
};
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);