/*
 * V4L2 by Jean-Francois Moine <http://moinejf.free.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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 *Notes: * t613  + tas5130A
 *      * Focus to light do not balance well as in win.
 *        Quality in win is not good, but its kinda better.
 *       * Fix some "extraneous bytes", most of apps will show the image anyway
 *       * Gamma table, is there, but its really doing something?
 *       * 7~8 Fps, its ok, max on win its 10.
 *                      Costantino Leandro
 */

#define MODULE_NAME "t613"

#include "gspca.h"

#define V4L2_CID_EFFECTS (V4L2_CID_PRIVATE_BASE + 0)

MODULE_AUTHOR("Leandro Costantino <le_costantino@pixartargentina.com.ar>");
MODULE_DESCRIPTION("GSPCA/T613 (JPEG Compliance) USB Camera Driver");
MODULE_LICENSE("GPL");

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

        u8 brightness;
        u8 contrast;
        u8 colors;
        u8 autogain;
        u8 gamma;
        u8 sharpness;
        u8 freq;
        u8 whitebalance;
        u8 mirror;
        u8 effect;

        u8 sensor;
#define SENSOR_OM6802 0
#define SENSOR_OTHER 1
#define SENSOR_TAS5130A 2
};

/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setlowlight(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getlowlight(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setgamma(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getgamma(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setwhitebalance(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getwhitebalance(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setflip(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getflip(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_seteffect(struct gspca_dev *gspca_dev, __s32 val);
static int sd_geteffect(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_querymenu(struct gspca_dev *gspca_dev,
                        struct v4l2_querymenu *menu);

static struct ctrl sd_ctrls[] = {
        {
         {
          .id = V4L2_CID_BRIGHTNESS,
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "Brightness",
          .minimum = 0,
          .maximum = 14,
          .step = 1,
#define BRIGHTNESS_DEF 8
          .default_value = BRIGHTNESS_DEF,
          },
         .set = sd_setbrightness,
         .get = sd_getbrightness,
         },
        {
         {
          .id = V4L2_CID_CONTRAST,
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "Contrast",
          .minimum = 0,
          .maximum = 0x0d,
          .step = 1,
#define CONTRAST_DEF 0x07
          .default_value = CONTRAST_DEF,
          },
         .set = sd_setcontrast,
         .get = sd_getcontrast,
         },
        {
         {
          .id = V4L2_CID_SATURATION,
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "Color",
          .minimum = 0,
          .maximum = 0x0f,
          .step = 1,
#define COLORS_DEF 0x05
          .default_value = COLORS_DEF,
          },
         .set = sd_setcolors,
         .get = sd_getcolors,
         },
#define GAMMA_MAX 16
#define GAMMA_DEF 10
        {
         {
          .id = V4L2_CID_GAMMA, /* (gamma on win) */
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "Gamma",
          .minimum = 0,
          .maximum = GAMMA_MAX - 1,
          .step = 1,
          .default_value = GAMMA_DEF,
          },
         .set = sd_setgamma,
         .get = sd_getgamma,
         },
        {
         {
          .id = V4L2_CID_GAIN,  /* here, i activate only the lowlight,
                                 * some apps dont bring up the
                                 * backligth_compensation control) */
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "Low Light",
          .minimum = 0,
          .maximum = 1,
          .step = 1,
#define AUTOGAIN_DEF 0x01
          .default_value = AUTOGAIN_DEF,
          },
         .set = sd_setlowlight,
         .get = sd_getlowlight,
         },
        {
         {
          .id = V4L2_CID_HFLIP,
          .type = V4L2_CTRL_TYPE_BOOLEAN,
          .name = "Mirror Image",
          .minimum = 0,
          .maximum = 1,
          .step = 1,
#define MIRROR_DEF 0
          .default_value = MIRROR_DEF,
          },
         .set = sd_setflip,
         .get = sd_getflip
        },
        {
         {
          .id = V4L2_CID_POWER_LINE_FREQUENCY,
          .type = V4L2_CTRL_TYPE_MENU,
          .name = "Light Frequency Filter",
          .minimum = 1,         /* 1 -> 0x50, 2->0x60 */
          .maximum = 2,
          .step = 1,
#define FREQ_DEF 1
          .default_value = FREQ_DEF,
          },
         .set = sd_setfreq,
         .get = sd_getfreq},

        {
         {
          .id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "White Balance",
          .minimum = 0,
          .maximum = 1,
          .step = 1,
#define WHITE_BALANCE_DEF 0
          .default_value = WHITE_BALANCE_DEF,
          },
         .set = sd_setwhitebalance,
         .get = sd_getwhitebalance
        },
        {
         {
          .id = V4L2_CID_SHARPNESS,
          .type = V4L2_CTRL_TYPE_INTEGER,
          .name = "Sharpness",
          .minimum = 0,
          .maximum = 15,
          .step = 1,
#define SHARPNESS_DEF 0x06
          .default_value = SHARPNESS_DEF,
          },
         .set = sd_setsharpness,
         .get = sd_getsharpness,
         },
        {
         {
          .id = V4L2_CID_EFFECTS,
          .type = V4L2_CTRL_TYPE_MENU,
          .name = "Webcam Effects",
          .minimum = 0,
          .maximum = 4,
          .step = 1,
#define EFFECTS_DEF 0
          .default_value = EFFECTS_DEF,
          },
         .set = sd_seteffect,
         .get = sd_geteffect
        },
};

static char *effects_control[] = {
        "Normal",
        "Emboss",               /* disabled */
        "Monochrome",
        "Sepia",
        "Sketch",
        "Sun Effect",           /* disabled */
        "Negative",
};

static const struct v4l2_pix_format vga_mode_t16[] = {
        {160, 120, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 160,
                .sizeimage = 160 * 120 * 4 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 4},
        {176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 176,
                .sizeimage = 176 * 144 * 3 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 3},
        {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 320,
                .sizeimage = 320 * 240 * 3 / 8 + 590,
                .colorspace = V4L2_COLORSPACE_JPEG,
                .priv = 2},
        {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
                .bytesperline = 352,
                .sizeimage = 352 * 288 * 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},
};

/* sensor specific data */
struct additional_sensor_data {
        const u8 data1[10];
        const u8 data2[9];
        const u8 data3[9];
        const u8 data4[4];
        const u8 data5[6];
        const u8 stream[4];
};

static const struct additional_sensor_data sensor_data[] = {
    {                           /* OM6802 */
        .data1 =
                {0xc2, 0x28, 0x0f, 0x22, 0xcd, 0x27, 0x2c, 0x06,
                 0xb3, 0xfc},
        .data2 =
                {0x80, 0xff, 0xff, 0x80, 0xff, 0xff, 0x80, 0xff,
                 0xff},
        .data4 =        /*Freq (50/60Hz). Splitted for test purpose */
                {0x66, 0xca, 0xa8, 0xf0},
        .data5 =        /* this could be removed later */
                {0x0c, 0x03, 0xab, 0x13, 0x81, 0x23},
        .stream =
                {0x0b, 0x04, 0x0a, 0x78},
    },
    {                           /* OTHER */
        .data1 =
                {0xc1, 0x48, 0x04, 0x1b, 0xca, 0x2e, 0x33, 0x3a,
                 0xe8, 0xfc},
        .data2 =
                {0x4e, 0x9c, 0xec, 0x40, 0x80, 0xc0, 0x48, 0x96,
                 0xd9},
        .data4 =
                {0x66, 0x00, 0xa8, 0xa8},
        .data5 =
                {0x0c, 0x03, 0xab, 0x29, 0x81, 0x69},
        .stream =
                {0x0b, 0x04, 0x0a, 0x00},
    },
    {                           /* TAS5130A */
        .data1 =
                {0xbb, 0x28, 0x10, 0x10, 0xbb, 0x28, 0x1e, 0x27,
                 0xc8, 0xfc},
        .data2 =
                {0x60, 0xa8, 0xe0, 0x60, 0xa8, 0xe0, 0x60, 0xa8,
                 0xe0},
        .data4 =        /* Freq (50/60Hz). Splitted for test purpose */
                {0x66, 0x00, 0xa8, 0xe8},
        .data5 =
                {0x0c, 0x03, 0xab, 0x10, 0x81, 0x20},
        .stream =
                {0x0b, 0x04, 0x0a, 0x40},
    },
};

#define MAX_EFFECTS 7
/* easily done by soft, this table could be removed,
 * i keep it here just in case */
static const u8 effects_table[MAX_EFFECTS][6] = {
        {0xa8, 0xe8, 0xc6, 0xd2, 0xc0, 0x00},   /* Normal */
        {0xa8, 0xc8, 0xc6, 0x52, 0xc0, 0x04},   /* Repujar */
        {0xa8, 0xe8, 0xc6, 0xd2, 0xc0, 0x20},   /* Monochrome */
        {0xa8, 0xe8, 0xc6, 0xd2, 0xc0, 0x80},   /* Sepia */
        {0xa8, 0xc8, 0xc6, 0x52, 0xc0, 0x02},   /* Croquis */
        {0xa8, 0xc8, 0xc6, 0xd2, 0xc0, 0x10},   /* Sun Effect */
        {0xa8, 0xc8, 0xc6, 0xd2, 0xc0, 0x40},   /* Negative */
};

static const u8 gamma_table[GAMMA_MAX][17] = {
        {0x00, 0x3e, 0x69, 0x85, 0x95, 0xa1, 0xae, 0xb9,        /* 0 */
         0xc2, 0xcb, 0xd4, 0xdb, 0xe3, 0xea, 0xf1, 0xf8,
         0xff},
        {0x00, 0x33, 0x5a, 0x75, 0x85, 0x93, 0xa1, 0xad,        /* 1 */
         0xb7, 0xc2, 0xcb, 0xd4, 0xde, 0xe7, 0xf0, 0xf7,
         0xff},
        {0x00, 0x2f, 0x51, 0x6b, 0x7c, 0x8a, 0x99, 0xa6,        /* 2 */
         0xb1, 0xbc, 0xc6, 0xd0, 0xdb, 0xe4, 0xed, 0xf6,
         0xff},
        {0x00, 0x29, 0x48, 0x60, 0x72, 0x81, 0x90, 0x9e,        /* 3 */
         0xaa, 0xb5, 0xbf, 0xcb, 0xd6, 0xe1, 0xeb, 0xf5,
         0xff},
        {0x00, 0x23, 0x3f, 0x55, 0x68, 0x77, 0x86, 0x95,        /* 4 */
         0xa2, 0xad, 0xb9, 0xc6, 0xd2, 0xde, 0xe9, 0xf4,
         0xff},
        {0x00, 0x1b, 0x33, 0x48, 0x59, 0x69, 0x79, 0x87,        /* 5 */
         0x96, 0xa3, 0xb1, 0xbe, 0xcc, 0xda, 0xe7, 0xf3,
         0xff},
        {0x00, 0x02, 0x10, 0x20, 0x32, 0x40, 0x57, 0x67,        /* 6 */
         0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee,
         0xff},
        {0x00, 0x02, 0x14, 0x26, 0x38, 0x4a, 0x60, 0x70,        /* 7 */
         0x80, 0x90, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0,
         0xff},
        {0x00, 0x10, 0x22, 0x35, 0x47, 0x5a, 0x69, 0x79,        /* 8 */
         0x88, 0x97, 0xa7, 0xb6, 0xc4, 0xd3, 0xe0, 0xf0,
         0xff},
        {0x00, 0x10, 0x26, 0x40, 0x54, 0x65, 0x75, 0x84,        /* 9 */
         0x93, 0xa1, 0xb0, 0xbd, 0xca, 0xd6, 0xe0, 0xf0,
         0xff},
        {0x00, 0x18, 0x2b, 0x44, 0x60, 0x70, 0x80, 0x8e,        /* 10 */
         0x9c, 0xaa, 0xb7, 0xc4, 0xd0, 0xd8, 0xe2, 0xf0,
         0xff},
        {0x00, 0x1a, 0x34, 0x52, 0x66, 0x7e, 0x8D, 0x9B,        /* 11 */
         0xa8, 0xb4, 0xc0, 0xcb, 0xd6, 0xe1, 0xeb, 0xf5,
         0xff},
        {0x00, 0x3f, 0x5a, 0x6e, 0x7f, 0x8e, 0x9c, 0xa8,        /* 12 */
         0xb4, 0xbf, 0xc9, 0xd3, 0xdc, 0xe5, 0xee, 0xf6,
         0xff},
        {0x00, 0x54, 0x6f, 0x83, 0x93, 0xa0, 0xad, 0xb7,        /* 13 */
         0xc2, 0xcb, 0xd4, 0xdc, 0xe4, 0xeb, 0xf2, 0xf9,
         0xff},
        {0x00, 0x6e, 0x88, 0x9a, 0xa8, 0xb3, 0xbd, 0xc6,        /* 14 */
         0xcf, 0xd6, 0xdd, 0xe3, 0xe9, 0xef, 0xf4, 0xfa,
         0xff},
        {0x00, 0x93, 0xa8, 0xb7, 0xc1, 0xca, 0xd2, 0xd8,        /* 15 */
         0xde, 0xe3, 0xe8, 0xed, 0xf1, 0xf5, 0xf8, 0xfc,
         0xff}
};

static const u8 tas5130a_sensor_init[][8] = {
        {0x62, 0x08, 0x63, 0x70, 0x64, 0x1d, 0x60, 0x09},
        {0x62, 0x20, 0x63, 0x01, 0x64, 0x02, 0x60, 0x09},
        {0x62, 0x07, 0x63, 0x03, 0x64, 0x00, 0x60, 0x09},
        {0x62, 0x07, 0x63, 0x03, 0x64, 0x00, 0x60, 0x09},
        {},
};

static u8 sensor_reset[] = {0x61, 0x68, 0x62, 0xff, 0x60, 0x07};

/* read 1 byte */
static u8 reg_r(struct gspca_dev *gspca_dev,
                   u16 index)
{
        usb_control_msg(gspca_dev->dev,
                        usb_rcvctrlpipe(gspca_dev->dev, 0),
                        0,              /* request */
                        USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        0,              /* value */
                        index,
                        gspca_dev->usb_buf, 1, 500);
        return gspca_dev->usb_buf[0];
}

static void reg_w(struct gspca_dev *gspca_dev,
                  u16 index)
{
        usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        0, index,
                        NULL, 0, 500);
}

static void reg_w_buf(struct gspca_dev *gspca_dev,
                  const u8 *buffer, u16 len)
{
        if (len <= USB_BUF_SZ) {
                memcpy(gspca_dev->usb_buf, buffer, len);
                usb_control_msg(gspca_dev->dev,
                                usb_sndctrlpipe(gspca_dev->dev, 0),
                                0,
                           USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                                0x01, 0,
                                gspca_dev->usb_buf, len, 500);
        } else {
                u8 *tmpbuf;

                tmpbuf = kmalloc(len, GFP_KERNEL);
                memcpy(tmpbuf, buffer, len);
                usb_control_msg(gspca_dev->dev,
                                usb_sndctrlpipe(gspca_dev->dev, 0),
                                0,
                           USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                                0x01, 0,
                                tmpbuf, len, 500);
                kfree(tmpbuf);
        }
}

/* write values to consecutive registers */
static void reg_w_ixbuf(struct gspca_dev *gspca_dev,
                        u8 reg,
                        const u8 *buffer, u16 len)
{
        int i;
        u8 *p, *tmpbuf;

        if (len * 2 <= USB_BUF_SZ)
                p = tmpbuf = gspca_dev->usb_buf;
        else
                p = tmpbuf = kmalloc(len * 2, GFP_KERNEL);
        i = len;
        while (--i >= 0) {
                *p++ = reg++;
                *p++ = *buffer++;
        }
        usb_control_msg(gspca_dev->dev,
                        usb_sndctrlpipe(gspca_dev->dev, 0),
                        0,
                        USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
                        0x01, 0,
                        tmpbuf, len * 2, 500);
        if (len * 2 > USB_BUF_SZ)
                kfree(tmpbuf);
}

/* Reported as OM6802*/
static void om6802_sensor_init(struct gspca_dev *gspca_dev)
{
        int i;
        const u8 *p;
        u8 byte;
        u8 val[6] = {0x62, 0, 0x64, 0, 0x60, 0x05};
        static const u8 sensor_init[] = {
                0xdf, 0x6d,
                0xdd, 0x18,
                0x5a, 0xe0,
                0x5c, 0x07,
                0x5d, 0xb0,
                0x5e, 0x1e,
                0x60, 0x71,
                0xef, 0x00,
                0xe9, 0x00,
                0xea, 0x00,
                0x90, 0x24,
                0x91, 0xb2,
                0x82, 0x32,
                0xfd, 0x41,
                0x00                    /* table end */
        };

        reg_w_buf(gspca_dev, sensor_reset, sizeof sensor_reset);
        msleep(100);
        i = 4;
        while (--i > 0) {
                byte = reg_r(gspca_dev, 0x0060);
                if (!(byte & 0x01))
                        break;
                msleep(100);
        }
        byte = reg_r(gspca_dev, 0x0063);
        if (byte != 0x17) {
                err("Bad sensor reset %02x", byte);
                /* continue? */
        }

        p = sensor_init;
        while (*p != 0) {
                val[1] = *p++;
                val[3] = *p++;
                if (*p == 0)
                        reg_w(gspca_dev, 0x3c80);
                reg_w_buf(gspca_dev, val, sizeof val);
                i = 4;
                while (--i >= 0) {
                        msleep(15);
                        byte = reg_r(gspca_dev, 0x60);
                        if (!(byte & 0x01))
                                break;
                }
        }
        msleep(15);
        reg_w(gspca_dev, 0x3c80);
}

/* 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;

        cam->cam_mode = vga_mode_t16;
        cam->nmodes = ARRAY_SIZE(vga_mode_t16);

        sd->brightness = BRIGHTNESS_DEF;
        sd->contrast = CONTRAST_DEF;
        sd->colors = COLORS_DEF;
        sd->gamma = GAMMA_DEF;
        sd->autogain = AUTOGAIN_DEF;
        sd->mirror = MIRROR_DEF;
        sd->freq = FREQ_DEF;
        sd->whitebalance = WHITE_BALANCE_DEF;
        sd->sharpness = SHARPNESS_DEF;
        sd->effect = EFFECTS_DEF;
        return 0;
}

static void setbrightness(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        unsigned int brightness;
        u8 set6[4] = { 0x8f, 0x24, 0xc3, 0x00 };

        brightness = sd->brightness;
        if (brightness < 7) {
                set6[1] = 0x26;
                set6[3] = 0x70 - brightness * 0x10;
        } else {
                set6[3] = 0x00 + ((brightness - 7) * 0x10);
        }

        reg_w_buf(gspca_dev, set6, sizeof set6);
}

static void setcontrast(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        unsigned int contrast = sd->contrast;
        u16 reg_to_write;

        if (contrast < 7)
                reg_to_write = 0x8ea9 - contrast * 0x200;
        else
                reg_to_write = 0x00a9 + (contrast - 7) * 0x200;

        reg_w(gspca_dev, reg_to_write);
}

static void setcolors(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u16 reg_to_write;

        reg_to_write = 0x80bb + sd->colors * 0x100;     /* was 0xc0 */
        reg_w(gspca_dev, reg_to_write);
}

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

        PDEBUG(D_CONF, "Gamma: %d", sd->gamma);
        reg_w_ixbuf(gspca_dev, 0x90,
                gamma_table[sd->gamma], sizeof gamma_table[0]);
}

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

        u8 white_balance[8] =
                {0x87, 0x20, 0x88, 0x20, 0x89, 0x20, 0x80, 0x38};

        if (sd->whitebalance)
                white_balance[7] = 0x3c;

        reg_w_buf(gspca_dev, white_balance, sizeof white_balance);
}

static void setsharpness(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u16 reg_to_write;

        reg_to_write = 0x0aa6 + 0x1000 * sd->sharpness;

        reg_w(gspca_dev, reg_to_write);
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
        /* some of this registers are not really neded, because
         * they are overriden by setbrigthness, setcontrast, etc,
         * but wont hurt anyway, and can help someone with similar webcam
         * to see the initial parameters.*/
        struct sd *sd = (struct sd *) gspca_dev;
        int i;
        u16 sensor_id;
        u8 test_byte = 0;
        u16 reg80, reg8e;

        static const u8 read_indexs[] =
                { 0x0a, 0x0b, 0x66, 0x80, 0x81, 0x8e, 0x8f, 0xa5,
                  0xa6, 0xa8, 0xbb, 0xbc, 0xc6, 0x00 };
        static const u8 n1[] =
                        {0x08, 0x03, 0x09, 0x03, 0x12, 0x04};
        static const u8 n2[] =
                        {0x08, 0x00};
        static const u8 n3[6] =
                        {0x61, 0x68, 0x65, 0x0a, 0x60, 0x04};
        static const u8 n3_other[6] =
                        {0x61, 0xc2, 0x65, 0x88, 0x60, 0x00};
        static const u8 n4[] =
                {0x09, 0x01, 0x12, 0x04, 0x66, 0x8a, 0x80, 0x3c,
                 0x81, 0x22, 0x84, 0x50, 0x8a, 0x78, 0x8b, 0x68,
                 0x8c, 0x88, 0x8e, 0x33, 0x8f, 0x24, 0xaa, 0xb1,
                 0xa2, 0x60, 0xa5, 0x30, 0xa6, 0x3a, 0xa8, 0xe8,
                 0xae, 0x05, 0xb1, 0x00, 0xbb, 0x04, 0xbc, 0x48,
                 0xbe, 0x36, 0xc6, 0x88, 0xe9, 0x00, 0xc5, 0xc0,
                 0x65, 0x0a, 0xbb, 0x86, 0xaf, 0x58, 0xb0, 0x68,
                 0x87, 0x40, 0x89, 0x2b, 0x8d, 0xff, 0x83, 0x40,
                 0xac, 0x84, 0xad, 0x86, 0xaf, 0x46};
        static const u8 n4_other[] =
                {0x66, 0x00, 0x7f, 0x00, 0x80, 0xac, 0x81, 0x69,
                 0x84, 0x40, 0x85, 0x70, 0x86, 0x20, 0x8a, 0x68,
                 0x8b, 0x58, 0x8c, 0x88, 0x8d, 0xff, 0x8e, 0xb8,
                 0x8f, 0x28, 0xa2, 0x60, 0xa5, 0x40, 0xa8, 0xa8,
                 0xac, 0x84, 0xad, 0x84, 0xae, 0x24, 0xaf, 0x56,
                 0xb0, 0x68, 0xb1, 0x00, 0xb2, 0x88, 0xbb, 0xc5,
                 0xbc, 0x4a, 0xbe, 0x36, 0xc2, 0x88, 0xc5, 0xc0,
                 0xc6, 0xda, 0xe9, 0x26, 0xeb, 0x00};
        static const u8 nset8[6] =
                        { 0xa8, 0xf0, 0xc6, 0x88, 0xc0, 0x00 };
        static const u8 nset8_other[6] =
                        { 0xa8, 0xa8, 0xc6, 0xda, 0xc0, 0x00 };
        static const u8 nset9[4] =
                        { 0x0b, 0x04, 0x0a, 0x78 };
        static const u8 nset9_other[4] =
                        { 0x0b, 0x04, 0x0a, 0x00 };

        sensor_id = (reg_r(gspca_dev, 0x06) << 8)
                        | reg_r(gspca_dev, 0x07);
        switch (sensor_id & 0xff0f) {
        case 0x0801:
                PDEBUG(D_PROBE, "sensor tas5130a");
                sd->sensor = SENSOR_TAS5130A;
                break;
        case 0x0803:
                PDEBUG(D_PROBE, "sensor 'other'");
                sd->sensor = SENSOR_OTHER;
                break;
        case 0x0807:
                PDEBUG(D_PROBE, "sensor om6802");
                sd->sensor = SENSOR_OM6802;
                break;
        default:
                PDEBUG(D_ERR|D_PROBE, "unknown sensor %04x", sensor_id);
                return -EINVAL;
        }

        if (sd->sensor == SENSOR_OM6802) {
                reg_w_buf(gspca_dev, n1, sizeof n1);
                i = 5;
                while (--i >= 0) {
                        reg_w_buf(gspca_dev, sensor_reset, sizeof sensor_reset);
                        test_byte = reg_r(gspca_dev, 0x0063);
                        msleep(100);
                        if (test_byte == 0x17)
                                break;          /* OK */
                }
                if (i < 0) {
                        err("Bad sensor reset %02x", test_byte);
/*                      return -EIO; */
/*fixme: test - continue */
                }
                reg_w_buf(gspca_dev, n2, sizeof n2);
        }

        i = 0;
        while (read_indexs[i] != 0x00) {
                test_byte = reg_r(gspca_dev, read_indexs[i]);
                PDEBUG(D_STREAM, "Reg 0x%02x = 0x%02x", read_indexs[i],
                       test_byte);
                i++;
        }

        if (sd->sensor != SENSOR_OTHER) {
                reg_w_buf(gspca_dev, n3, sizeof n3);
                reg_w_buf(gspca_dev, n4, sizeof n4);
                reg_r(gspca_dev, 0x0080);
                reg_w(gspca_dev, 0x2c80);
                reg80 = 0x3880;
                reg8e = 0x338e;
        } else {
                reg_w_buf(gspca_dev, n3_other, sizeof n3_other);
                reg_w_buf(gspca_dev, n4_other, sizeof n4_other);
                sd->gamma = 5;
                reg80 = 0xac80;
                reg8e = 0xb88e;
        }

        reg_w_ixbuf(gspca_dev, 0xd0, sensor_data[sd->sensor].data1,
                        sizeof sensor_data[sd->sensor].data1);
        reg_w_ixbuf(gspca_dev, 0xc7, sensor_data[sd->sensor].data2,
                        sizeof sensor_data[sd->sensor].data2);
        reg_w_ixbuf(gspca_dev, 0xe0, sensor_data[sd->sensor].data2,
                        sizeof sensor_data[sd->sensor].data2);

        reg_w(gspca_dev, reg80);
        reg_w(gspca_dev, reg80);
        reg_w(gspca_dev, reg8e);

        setbrightness(gspca_dev);
        setcontrast(gspca_dev);
        setgamma(gspca_dev);
        setcolors(gspca_dev);
        setsharpness(gspca_dev);
        setwhitebalance(gspca_dev);

        reg_w(gspca_dev, 0x2087);       /* tied to white balance? */
        reg_w(gspca_dev, 0x2088);
        reg_w(gspca_dev, 0x2089);

        reg_w_buf(gspca_dev, sensor_data[sd->sensor].data4,
                        sizeof sensor_data[sd->sensor].data4);
        reg_w_buf(gspca_dev, sensor_data[sd->sensor].data5,
                        sizeof sensor_data[sd->sensor].data5);
        if (sd->sensor != SENSOR_OTHER) {
                reg_w_buf(gspca_dev, nset8, sizeof nset8);
                reg_w_buf(gspca_dev, nset9, sizeof nset9);
                reg_w(gspca_dev, 0x2880);
        } else {
                reg_w_buf(gspca_dev, nset8_other, sizeof nset8_other);
                reg_w_buf(gspca_dev, nset9_other, sizeof nset9_other);
        }

        reg_w_ixbuf(gspca_dev, 0xd0, sensor_data[sd->sensor].data1,
                        sizeof sensor_data[sd->sensor].data1);
        reg_w_ixbuf(gspca_dev, 0xc7, sensor_data[sd->sensor].data2,
                        sizeof sensor_data[sd->sensor].data2);
        reg_w_ixbuf(gspca_dev, 0xe0, sensor_data[sd->sensor].data2,
                        sizeof sensor_data[sd->sensor].data2);

        return 0;
}

static void setflip(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u8 flipcmd[8] =
                {0x62, 0x07, 0x63, 0x03, 0x64, 0x00, 0x60, 0x09};

        if (sd->mirror)
                flipcmd[3] = 0x01;

        reg_w_buf(gspca_dev, flipcmd, sizeof flipcmd);
}

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

        reg_w_buf(gspca_dev, effects_table[sd->effect],
                                sizeof effects_table[0]);
        if (sd->effect == 1 || sd->effect == 5) {
                PDEBUG(D_CONF,
                       "This effect have been disabled for webcam \"safety\"");
                return;
        }

        if (sd->effect == 1 || sd->effect == 4)
                reg_w(gspca_dev, 0x4aa6);
        else
                reg_w(gspca_dev, 0xfaa6);
}

static void setlightfreq(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        u8 freq[4] = { 0x66, 0x40, 0xa8, 0xe8 };

        if (sd->freq == 2)      /* 60hz */
                freq[1] = 0x00;

        reg_w_buf(gspca_dev, freq, sizeof freq);
}

/* Is this really needed?
 * i added some module parameters for test with some users */
static void poll_sensor(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        static const u8 poll1[] =
                {0x67, 0x05, 0x68, 0x81, 0x69, 0x80, 0x6a, 0x82,
                 0x6b, 0x68, 0x6c, 0x69, 0x72, 0xd9, 0x73, 0x34,
                 0x74, 0x32, 0x75, 0x92, 0x76, 0x00, 0x09, 0x01,
                 0x60, 0x14};
        static const u8 poll2[] =
                {0x67, 0x02, 0x68, 0x71, 0x69, 0x72, 0x72, 0xa9,
                 0x73, 0x02, 0x73, 0x02, 0x60, 0x14};
        static const u8 poll3[] =
                {0x87, 0x3f, 0x88, 0x20, 0x89, 0x2d};
        static const u8 poll4[] =
                {0xa6, 0x0a, 0xea, 0xcf, 0xbe, 0x26, 0xb1, 0x5f,
                 0xa1, 0xb1, 0xda, 0x6b, 0xdb, 0x98, 0xdf, 0x0c,
                 0xc2, 0x80, 0xc3, 0x10};

        if (sd->sensor == SENSOR_OM6802) {
                PDEBUG(D_STREAM, "[Sensor requires polling]");
                reg_w_buf(gspca_dev, poll1, sizeof poll1);
                reg_w_buf(gspca_dev, poll2, sizeof poll2);
                reg_w_buf(gspca_dev, poll3, sizeof poll3);
                reg_w_buf(gspca_dev, poll4, sizeof poll4);
        }
}

static int sd_start(struct gspca_dev *gspca_dev)
{
        struct sd *sd = (struct sd *) gspca_dev;
        int i, mode;
        u8 t2[] = { 0x07, 0x00, 0x0d, 0x60, 0x0e, 0x80 };
        static const u8 t3[] =
                { 0x07, 0x00, 0x88, 0x02, 0x06, 0x00, 0xe7, 0x01 };

        mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode]. priv;
        switch (mode) {
        case 0:         /* 640x480 (0x00) */
                break;
        case 1:         /* 352x288 */
                t2[1] = 0x40;
                break;
        case 2:         /* 320x240 */
                t2[1] = 0x10;
                break;
        case 3:         /* 176x144 */
                t2[1] = 0x50;
                break;
        default:
/*      case 4:          * 160x120 */
                t2[1] = 0x20;
                break;
        }

        switch (sd->sensor) {
        case SENSOR_OM6802:
                om6802_sensor_init(gspca_dev);
                break;
        case SENSOR_OTHER:
                break;
        default:
/*      case SENSOR_TAS5130A: */
                i = 0;
                while (tas5130a_sensor_init[i][0] != 0) {
                        reg_w_buf(gspca_dev, tas5130a_sensor_init[i],
                                         sizeof tas5130a_sensor_init[0]);
                        i++;
                }
                reg_w(gspca_dev, 0x3c80);
                /* just in case and to keep sync with logs (for mine) */
                reg_w_buf(gspca_dev, tas5130a_sensor_init[3],
                                 sizeof tas5130a_sensor_init[0]);
                reg_w(gspca_dev, 0x3c80);
                break;
        }
        reg_w_buf(gspca_dev, sensor_data[sd->sensor].data4,
                        sizeof sensor_data[sd->sensor].data4);
        reg_r(gspca_dev, 0x0012);
        reg_w_buf(gspca_dev, t2, sizeof t2);
        reg_w_ixbuf(gspca_dev, 0xb3, t3, sizeof t3);
        reg_w(gspca_dev, 0x0013);
        msleep(15);
        reg_w_buf(gspca_dev, sensor_data[sd->sensor].stream,
                        sizeof sensor_data[sd->sensor].stream);
        poll_sensor(gspca_dev);

        /* restart on each start, just in case, sometimes regs goes wrong
         * when using controls from app */
        setbrightness(gspca_dev);
        setcontrast(gspca_dev);
        setcolors(gspca_dev);
        return 0;
}

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

        reg_w_buf(gspca_dev, sensor_data[sd->sensor].stream,
                        sizeof sensor_data[sd->sensor].stream);
        msleep(20);
        reg_w_buf(gspca_dev, sensor_data[sd->sensor].stream,
                        sizeof sensor_data[sd->sensor].stream);
        if (sd->sensor != SENSOR_OTHER) {
                msleep(20);
                reg_w(gspca_dev, 0x0309);
        }
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
                        struct gspca_frame *frame,      /* target */
                        u8 *data,                       /* isoc packet */
                        int len)                        /* iso packet length */
{
        static u8 ffd9[] = { 0xff, 0xd9 };

        if (data[0] == 0x5a) {
                /* Control Packet, after this came the header again,
                 * but extra bytes came in the packet before this,
                 * sometimes an EOF arrives, sometimes not... */
                return;
        }
        data += 2;
        len -= 2;
        if (data[0] == 0xff && data[1] == 0xd8) {
                /* extra bytes....., could be processed too but would be
                 * a waste of time, right now leave the application and
                 * libjpeg do it for ourserlves.. */
                frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
                                        ffd9, 2);
                gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, len);
                return;
        }

        if (data[len - 2] == 0xff && data[len - 1] == 0xd9) {
                /* Just in case, i have seen packets with the marker,
                 * other's do not include it... */
                len -= 2;
        }
        gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}

static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->brightness = val;
        if (gspca_dev->streaming)
                setbrightness(gspca_dev);
        return 0;
}

static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->brightness;
        return *val;
}

static int sd_setwhitebalance(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->whitebalance = val;
        if (gspca_dev->streaming)
                setwhitebalance(gspca_dev);
        return 0;
}

static int sd_getwhitebalance(struct gspca_dev *gspca_dev, __s32 *val)
{

        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->whitebalance;
        return *val;
}

static int sd_setflip(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->mirror = val;
        if (gspca_dev->streaming)
                setflip(gspca_dev);
        return 0;
}

static int sd_getflip(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->mirror;
        return *val;
}

static int sd_seteffect(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->effect = val;
        if (gspca_dev->streaming)
                seteffect(gspca_dev);
        return 0;
}

static int sd_geteffect(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->effect;
        return *val;
}

static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->contrast = val;
        if (gspca_dev->streaming)
                setcontrast(gspca_dev);
        return 0;
}

static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->contrast;
        return *val;
}

static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->colors = val;
        if (gspca_dev->streaming)
                setcolors(gspca_dev);
        return 0;
}

static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->colors;
        return 0;
}

static int sd_setgamma(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->gamma = val;
        if (gspca_dev->streaming)
                setgamma(gspca_dev);
        return 0;
}

static int sd_getgamma(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->gamma;
        return 0;
}

static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->freq = val;
        if (gspca_dev->streaming)
                setlightfreq(gspca_dev);
        return 0;
}

static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->freq;
        return 0;
}

static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->sharpness = val;
        if (gspca_dev->streaming)
                setsharpness(gspca_dev);
        return 0;
}

static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->sharpness;
        return 0;
}

/* Low Light set  here......*/
static int sd_setlowlight(struct gspca_dev *gspca_dev, __s32 val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        sd->autogain = val;
        if (val != 0)
                reg_w(gspca_dev, 0xf48e);
        else
                reg_w(gspca_dev, 0xb48e);
        return 0;
}

static int sd_getlowlight(struct gspca_dev *gspca_dev, __s32 *val)
{
        struct sd *sd = (struct sd *) gspca_dev;

        *val = sd->autogain;
        return 0;
}

static int sd_querymenu(struct gspca_dev *gspca_dev,
                        struct v4l2_querymenu *menu)
{
        switch (menu->id) {
        case V4L2_CID_POWER_LINE_FREQUENCY:
                switch (menu->index) {
                case 1:         /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
                        strcpy((char *) menu->name, "50 Hz");
                        return 0;
                case 2:         /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
                        strcpy((char *) menu->name, "60 Hz");
                        return 0;
                }
                break;
        case V4L2_CID_EFFECTS:
                if ((unsigned) menu->index < ARRAY_SIZE(effects_control)) {
                        strncpy((char *) menu->name,
                                effects_control[menu->index], 32);
                        return 0;
                }
                break;
        }
        return -EINVAL;
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
        .name = MODULE_NAME,
        .ctrls = sd_ctrls,
        .nctrls = ARRAY_SIZE(sd_ctrls),
        .config = sd_config,
        .init = sd_init,
        .start = sd_start,
        .stopN = sd_stopN,
        .pkt_scan = sd_pkt_scan,
        .querymenu = sd_querymenu,
};

/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
        {USB_DEVICE(0x17a1, 0x0128)},
        {}
};
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,
#endif
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
        int ret;
        ret = usb_register(&sd_driver);
        if (ret < 0)
                return ret;
        PDEBUG(D_PROBE, "registered");
        return 0;
}
static void __exit sd_mod_exit(void)
{
        usb_deregister(&sd_driver);
        PDEBUG(D_PROBE, "deregistered");
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);