err.no Git - linux-2.6/blob - drivers/media/video/gspca/tv8532.c

   1 /*
   2  * Quickcam cameras initialization data
   3  *
   4  * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  *
  20  */
  21 #define MODULE_NAME "tv8532"
  22
  23 #include "gspca.h"
  24
  25 #define DRIVER_VERSION_NUMBER   KERNEL_VERSION(2, 1, 5)
  26 static const char version[] = "2.1.5";
  27
  28 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  29 MODULE_DESCRIPTION("TV8532 USB Camera Driver");
  30 MODULE_LICENSE("GPL");
  31
  32 /* specific webcam descriptor */
  33 struct sd {
  34         struct gspca_dev gspca_dev;     /* !! must be the first item */
  35
  36         int buflen;                     /* current length of tmpbuf */
  37         __u8 tmpbuf[352 * 288 + 10 * 288];      /* no protection... */
  38         __u8 tmpbuf2[352 * 288];                /* no protection... */
  39
  40         unsigned short brightness;
  41         unsigned short contrast;
  42
  43         char packet;
  44         char synchro;
  45 };
  46
  47 /* V4L2 controls supported by the driver */
  48 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
  49 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
  50 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
  51 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
  52
  53 static struct ctrl sd_ctrls[] = {
  54 #define SD_BRIGHTNESS 0
  55         {
  56          {
  57           .id = V4L2_CID_BRIGHTNESS,
  58           .type = V4L2_CTRL_TYPE_INTEGER,
  59           .name = "Brightness",
  60           .minimum = 1,
  61           .maximum = 0x2ff,
  62           .step = 1,
  63           .default_value = 0x18f,
  64           },
  65          .set = sd_setbrightness,
  66          .get = sd_getbrightness,
  67          },
  68 #define SD_CONTRAST 1
  69         {
  70          {
  71           .id = V4L2_CID_CONTRAST,
  72           .type = V4L2_CTRL_TYPE_INTEGER,
  73           .name = "Contrast",
  74           .minimum = 0,
  75           .maximum = 0xffff,
  76           .step = 1,
  77           .default_value = 0x7fff,
  78           },
  79          .set = sd_setcontrast,
  80          .get = sd_getcontrast,
  81          },
  82 };
  83
  84 static struct v4l2_pix_format sif_mode[] = {
  85         {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  86                 .bytesperline = 176,
  87                 .sizeimage = 176 * 144,
  88                 .colorspace = V4L2_COLORSPACE_SRGB,
  89                 .priv = 1},
  90         {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  91                 .bytesperline = 352,
  92                 .sizeimage = 352 * 288,
  93                 .colorspace = V4L2_COLORSPACE_SRGB,
  94                 .priv = 0},
  95 };
  96
  97 /*
  98  * Initialization data: this is the first set-up data written to the
  99  * device (before the open data).
 100  */
 101 #define TESTCLK 0x10            /* reg 0x2c -> 0x12 //10 */
 102 #define TESTCOMP 0x90           /* reg 0x28 -> 0x80 */
 103 #define TESTLINE 0x81           /* reg 0x29 -> 0x81 */
 104 #define QCIFLINE 0x41           /* reg 0x29 -> 0x81 */
 105 #define TESTPTL 0x14            /* reg 0x2D -> 0x14 */
 106 #define TESTPTH 0x01            /* reg 0x2E -> 0x01 */
 107 #define TESTPTBL 0x12           /* reg 0x2F -> 0x0a */
 108 #define TESTPTBH 0x01           /* reg 0x30 -> 0x01 */
 109 #define ADWIDTHL 0xe8           /* reg 0x0c -> 0xe8 */
 110 #define ADWIDTHH 0x03           /* reg 0x0d -> 0x03 */
 111 #define ADHEIGHL 0x90           /* reg 0x0e -> 0x91 //93 */
 112 #define ADHEIGHH 0x01           /* reg 0x0f -> 0x01 */
 113 #define EXPOL 0x8f              /* reg 0x1c -> 0x8f */
 114 #define EXPOH 0x01              /* reg 0x1d -> 0x01 */
 115 #define ADCBEGINL 0x44          /* reg 0x10 -> 0x46 //47 */
 116 #define ADCBEGINH 0x00          /* reg 0x11 -> 0x00 */
 117 #define ADRBEGINL 0x0a          /* reg 0x14 -> 0x0b //0x0c */
 118 #define ADRBEGINH 0x00          /* reg 0x15 -> 0x00 */
 119 #define TV8532_CMD_UPDATE 0x84
 120
 121 #define TV8532_EEprom_Add 0x03
 122 #define TV8532_EEprom_DataL 0x04
 123 #define TV8532_EEprom_DataM 0x05
 124 #define TV8532_EEprom_DataH 0x06
 125 #define TV8532_EEprom_TableLength 0x07
 126 #define TV8532_EEprom_Write 0x08
 127 #define TV8532_PART_CTRL 0x00
 128 #define TV8532_CTRL 0x01
 129 #define TV8532_CMD_EEprom_Open 0x30
 130 #define TV8532_CMD_EEprom_Close 0x29
 131 #define TV8532_UDP_UPDATE 0x31
 132 #define TV8532_GPIO 0x39
 133 #define TV8532_GPIO_OE 0x3B
 134 #define TV8532_REQ_RegWrite 0x02
 135 #define TV8532_REQ_RegRead 0x03
 136
 137 #define TV8532_ADWIDTH_L 0x0C
 138 #define TV8532_ADWIDTH_H 0x0D
 139 #define TV8532_ADHEIGHT_L 0x0E
 140 #define TV8532_ADHEIGHT_H 0x0F
 141 #define TV8532_EXPOSURE 0x1C
 142 #define TV8532_QUANT_COMP 0x28
 143 #define TV8532_MODE_PACKET 0x29
 144 #define TV8532_SETCLK 0x2C
 145 #define TV8532_POINT_L 0x2D
 146 #define TV8532_POINT_H 0x2E
 147 #define TV8532_POINTB_L 0x2F
 148 #define TV8532_POINTB_H 0x30
 149 #define TV8532_BUDGET_L 0x2A
 150 #define TV8532_BUDGET_H 0x2B
 151 #define TV8532_VID_L 0x34
 152 #define TV8532_VID_H 0x35
 153 #define TV8532_PID_L 0x36
 154 #define TV8532_PID_H 0x37
 155 #define TV8532_DeviceID 0x83
 156 #define TV8532_AD_SLOPE 0x91
 157 #define TV8532_AD_BITCTRL 0x94
 158 #define TV8532_AD_COLBEGIN_L 0x10
 159 #define TV8532_AD_COLBEGIN_H 0x11
 160 #define TV8532_AD_ROWBEGIN_L 0x14
 161 #define TV8532_AD_ROWBEGIN_H 0x15
 162
 163 static const __u32 tv_8532_eeprom_data[] = {
 164 /*      add             dataL      dataM        dataH */
 165         0x00010001, 0x01018011, 0x02050014, 0x0305001c,
 166         0x040d001e, 0x0505001f, 0x06050519, 0x0705011b,
 167         0x0805091e, 0x090d892e, 0x0a05892f, 0x0b050dd9,
 168         0x0c0509f1, 0
 169 };
 170
 171 static void reg_r(struct usb_device *dev,
 172                   __u16 index, __u8 *buffer)
 173 {
 174         usb_control_msg(dev,
 175                         usb_rcvctrlpipe(dev, 0),
 176                         TV8532_REQ_RegRead,
 177                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 178                         0,      /* value */
 179                         index, buffer, sizeof(__u8),
 180                         500);
 181 }
 182
 183 static void reg_w(struct usb_device *dev,
 184                   __u16 index, __u8 *buffer, __u16 length)
 185 {
 186         usb_control_msg(dev,
 187                         usb_sndctrlpipe(dev, 0),
 188                         TV8532_REQ_RegWrite,
 189                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 190                         0,      /* value */
 191                         index, buffer, length, 500);
 192 }
 193
 194 static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 195 {
 196         int i = 0;
 197         __u8 reg, data0, data1, data2, datacmd;
 198         struct usb_device *dev = gspca_dev->dev;
 199
 200         datacmd = 0xb0;;
 201         reg_w(dev, TV8532_GPIO, &datacmd, 1);
 202         datacmd = TV8532_CMD_EEprom_Open;
 203         reg_w(dev, TV8532_CTRL, &datacmd, 1);
 204 /*      msleep(1); */
 205         while (tv_8532_eeprom_data[i]) {
 206                 reg = (tv_8532_eeprom_data[i] & 0xff000000) >> 24;
 207                 reg_w(dev, TV8532_EEprom_Add, &reg, 1);
 208                 /* msleep(1); */
 209                 data0 = (tv_8532_eeprom_data[i] & 0x000000ff);
 210                 reg_w(dev, TV8532_EEprom_DataL, &data0, 1);
 211                 /* msleep(1); */
 212                 data1 = (tv_8532_eeprom_data[i] & 0x0000FF00) >> 8;
 213                 reg_w(dev, TV8532_EEprom_DataM, &data1, 1);
 214                 /* msleep(1); */
 215                 data2 = (tv_8532_eeprom_data[i] & 0x00FF0000) >> 16;
 216                 reg_w(dev, TV8532_EEprom_DataH, &data2, 1);
 217                 /* msleep(1); */
 218                 datacmd = 0;
 219                 reg_w(dev, TV8532_EEprom_Write, &datacmd, 1);
 220                 /* msleep(10); */
 221                 i++;
 222         }
 223         datacmd = i;
 224         reg_w(dev, TV8532_EEprom_TableLength, &datacmd, 1);
 225 /*      msleep(1); */
 226         datacmd = TV8532_CMD_EEprom_Close;
 227         reg_w(dev, TV8532_CTRL, &datacmd, 1);
 228         msleep(10);
 229 }
 230
 231 /* this function is called at probe time */
 232 static int sd_config(struct gspca_dev *gspca_dev,
 233                      const struct usb_device_id *id)
 234 {
 235         struct sd *sd = (struct sd *) gspca_dev;
 236         struct cam *cam;
 237
 238         tv_8532WriteEEprom(gspca_dev);
 239
 240         cam = &gspca_dev->cam;
 241         cam->dev_name = (char *) id->driver_info;
 242         cam->epaddr = 1;
 243         cam->cam_mode = sif_mode;
 244         cam->nmodes = sizeof sif_mode / sizeof sif_mode[0];
 245
 246         sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
 247         sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
 248         return 0;
 249 }
 250
 251 static void tv_8532ReadRegisters(struct gspca_dev *gspca_dev)
 252 {
 253         struct usb_device *dev = gspca_dev->dev;
 254         __u8 data;
 255 /*      __u16 vid, pid; */
 256
 257         reg_r(dev, 0x0001, &data);
 258         PDEBUG(D_USBI, "register 0x01-> %x", data);
 259         reg_r(dev, 0x0002, &data);
 260         PDEBUG(D_USBI, "register 0x02-> %x", data);
 261         reg_r(dev, TV8532_ADWIDTH_L, &data);
 262         reg_r(dev, TV8532_ADWIDTH_H, &data);
 263         reg_r(dev, TV8532_QUANT_COMP, &data);
 264         reg_r(dev, TV8532_MODE_PACKET, &data);
 265         reg_r(dev, TV8532_SETCLK, &data);
 266         reg_r(dev, TV8532_POINT_L, &data);
 267         reg_r(dev, TV8532_POINT_H, &data);
 268         reg_r(dev, TV8532_POINTB_L, &data);
 269         reg_r(dev, TV8532_POINTB_H, &data);
 270         reg_r(dev, TV8532_BUDGET_L, &data);
 271         reg_r(dev, TV8532_BUDGET_H, &data);
 272         reg_r(dev, TV8532_VID_L, &data);
 273         reg_r(dev, TV8532_VID_H, &data);
 274         reg_r(dev, TV8532_PID_L, &data);
 275         reg_r(dev, TV8532_PID_H, &data);
 276         reg_r(dev, TV8532_DeviceID, &data);
 277         reg_r(dev, TV8532_AD_COLBEGIN_L, &data);
 278         reg_r(dev, TV8532_AD_COLBEGIN_H, &data);
 279         reg_r(dev, TV8532_AD_ROWBEGIN_L, &data);
 280         reg_r(dev, TV8532_AD_ROWBEGIN_H, &data);
 281 }
 282
 283 static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 284 {
 285         struct usb_device *dev = gspca_dev->dev;
 286         __u8 data;
 287         __u8 value[2] = { 0, 0 };
 288
 289         data = ADCBEGINL;
 290         reg_w(dev, TV8532_AD_COLBEGIN_L, &data, 1);     /* 0x10 */
 291         data = ADCBEGINH;       /* also digital gain */
 292         reg_w(dev, TV8532_AD_COLBEGIN_H, &data, 1);
 293         data = TV8532_CMD_UPDATE;
 294         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 295
 296         data = 0x0a;
 297         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 298         /******************************************************/
 299         data = ADHEIGHL;
 300         reg_w(dev, TV8532_ADHEIGHT_L, &data, 1);        /* 0e */
 301         data = ADHEIGHH;
 302         reg_w(dev, TV8532_ADHEIGHT_H, &data, 1);        /* 0f */
 303         value[0] = EXPOL;
 304         value[1] = EXPOH;       /* 350d 0x014c; */
 305         reg_w(dev, TV8532_EXPOSURE, value, 2);  /* 1c */
 306         data = ADCBEGINL;
 307         reg_w(dev, TV8532_AD_COLBEGIN_L, &data, 1);     /* 0x10 */
 308         data = ADCBEGINH;       /* also digital gain */
 309         reg_w(dev, TV8532_AD_COLBEGIN_H, &data, 1);
 310         data = ADRBEGINL;
 311         reg_w(dev, TV8532_AD_ROWBEGIN_L, &data, 1);     /* 0x14 */
 312
 313         data = 0x00;
 314         reg_w(dev, TV8532_AD_SLOPE, &data, 1);  /* 0x91 */
 315         data = 0x02;
 316         reg_w(dev, TV8532_AD_BITCTRL, &data, 1);        /* 0x94 */
 317
 318
 319         data = TV8532_CMD_EEprom_Close;
 320         reg_w(dev, TV8532_CTRL, &data, 1);      /* 0x01 */
 321
 322         data = 0x00;
 323         reg_w(dev, TV8532_AD_SLOPE, &data, 1);  /* 0x91 */
 324         data = TV8532_CMD_UPDATE;
 325         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 326 }
 327
 328 static void tv_8532_PollReg(struct gspca_dev *gspca_dev)
 329 {
 330         struct usb_device *dev = gspca_dev->dev;
 331         __u8 data;
 332         int i;
 333
 334         /* strange polling from tgc */
 335         for (i = 0; i < 10; i++) {
 336                 data = TESTCLK; /* 0x48; //0x08; */
 337                 reg_w(dev, TV8532_SETCLK, &data, 1);    /* 0x2c */
 338                 data = TV8532_CMD_UPDATE;
 339                 reg_w(dev, TV8532_PART_CTRL, &data, 1);
 340                 data = 0x01;
 341                 reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 342         }
 343 }
 344
 345 /* this function is called at open time */
 346 static int sd_open(struct gspca_dev *gspca_dev)
 347 {
 348         struct usb_device *dev = gspca_dev->dev;
 349         __u8 data;
 350         __u8 dataStart;
 351         __u8 value[2];
 352
 353         data = 0x32;
 354         reg_w(dev, TV8532_AD_SLOPE, &data, 1);
 355         data = 0;
 356         reg_w(dev, TV8532_AD_BITCTRL, &data, 1);
 357         tv_8532ReadRegisters(gspca_dev);
 358         data = 0x0b;
 359         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 360         value[0] = ADHEIGHL;
 361         value[1] = ADHEIGHH;    /* 401d 0x0169; */
 362         reg_w(dev, TV8532_ADHEIGHT_L, value, 2);        /* 0e */
 363         value[0] = EXPOL;
 364         value[1] = EXPOH;       /* 350d 0x014c; */
 365         reg_w(dev, TV8532_EXPOSURE, value, 2);  /* 1c */
 366         data = ADWIDTHL;        /* 0x20; */
 367         reg_w(dev, TV8532_ADWIDTH_L, &data, 1); /* 0x0c */
 368         data = ADWIDTHH;
 369         reg_w(dev, TV8532_ADWIDTH_H, &data, 1); /* 0x0d */
 370
 371         /*******************************************************************/
 372         data = TESTCOMP;        /* 0x72 compressed mode */
 373         reg_w(dev, TV8532_QUANT_COMP, &data, 1);        /* 0x28 */
 374         data = TESTLINE;        /* 0x84; // CIF | 4 packet */
 375         reg_w(dev, TV8532_MODE_PACKET, &data, 1);       /* 0x29 */
 376
 377         /************************************************/
 378         data = TESTCLK;         /* 0x48; //0x08; */
 379         reg_w(dev, TV8532_SETCLK, &data, 1);    /* 0x2c */
 380         data = TESTPTL;         /* 0x38; */
 381         reg_w(dev, TV8532_POINT_L, &data, 1);   /* 0x2d */
 382         data = TESTPTH;         /* 0x04; */
 383         reg_w(dev, TV8532_POINT_H, &data, 1);   /* 0x2e */
 384         dataStart = TESTPTBL;   /* 0x04; */
 385         reg_w(dev, TV8532_POINTB_L, &dataStart, 1);     /* 0x2f */
 386         data = TESTPTBH;        /* 0x04; */
 387         reg_w(dev, TV8532_POINTB_H, &data, 1);  /* 0x30 */
 388         data = TV8532_CMD_UPDATE;
 389         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 390         /*************************************************/
 391         data = 0x01;
 392         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 393         msleep(200);
 394         data = 0x00;
 395         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 396         /*************************************************/
 397         tv_8532_setReg(gspca_dev);
 398         /*************************************************/
 399         data = 0x0b;
 400         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 401         /*************************************************/
 402         tv_8532_setReg(gspca_dev);
 403         /*************************************************/
 404         tv_8532_PollReg(gspca_dev);
 405         return 0;
 406 }
 407
 408 static void setbrightness(struct gspca_dev *gspca_dev)
 409 {
 410         struct sd *sd = (struct sd *) gspca_dev;
 411         __u8 value[2];
 412         __u8 data;
 413         int brightness = sd->brightness;
 414
 415         value[1] = (brightness >> 8) & 0xff;
 416         value[0] = (brightness) & 0xff;
 417         reg_w(gspca_dev->dev, TV8532_EXPOSURE, value, 2);       /* 1c */
 418         data = TV8532_CMD_UPDATE;
 419         reg_w(gspca_dev->dev, TV8532_PART_CTRL, &data, 1);
 420 }
 421
 422 /* -- start the camera -- */
 423 static void sd_start(struct gspca_dev *gspca_dev)
 424 {
 425         struct usb_device *dev = gspca_dev->dev;
 426         __u8 data;
 427         __u8 value[2];
 428
 429         data = 0x32;
 430         reg_w(dev, TV8532_AD_SLOPE, &data, 1);
 431         data = 0;
 432         reg_w(dev, TV8532_AD_BITCTRL, &data, 1);
 433         tv_8532ReadRegisters(gspca_dev);
 434         data = 0x0b;
 435         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 436         value[0] = ADHEIGHL;
 437         value[1] = ADHEIGHH;    /* 401d 0x0169; */
 438         reg_w(dev, TV8532_ADHEIGHT_L, value, 2);        /* 0e */
 439 /*      value[0] = EXPOL; value[1] =EXPOH;               * 350d 0x014c; */
 440 /*      reg_w(dev,TV8532_REQ_RegWrite,0,TV8532_EXPOSURE,value,2);  * 1c */
 441         setbrightness(gspca_dev);
 442
 443         data = ADWIDTHL;        /* 0x20; */
 444         reg_w(dev, TV8532_ADWIDTH_L, &data, 1); /* 0x0c */
 445         data = ADWIDTHH;
 446         reg_w(dev, TV8532_ADWIDTH_H, &data, 1); /* 0x0d */
 447
 448         /************************************************/
 449         data = TESTCOMP;        /* 0x72 compressed mode */
 450         reg_w(dev, TV8532_QUANT_COMP, &data, 1);        /* 0x28 */
 451         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 452                 /* 176x144 */
 453                 data = QCIFLINE;        /* 0x84; // CIF | 4 packet */
 454                 reg_w(dev, TV8532_MODE_PACKET, &data, 1);       /* 0x29 */
 455         } else {
 456                 /* 352x288 */
 457                 data = TESTLINE;        /* 0x84; // CIF | 4 packet */
 458                 reg_w(dev, TV8532_MODE_PACKET, &data, 1);       /* 0x29 */
 459         }
 460         /************************************************/
 461         data = TESTCLK;         /* 0x48; //0x08; */
 462         reg_w(dev, TV8532_SETCLK, &data, 1);    /* 0x2c */
 463         data = TESTPTL;         /* 0x38; */
 464         reg_w(dev, TV8532_POINT_L, &data, 1);   /* 0x2d */
 465         data = TESTPTH;         /* 0x04; */
 466         reg_w(dev, TV8532_POINT_H, &data, 1);   /* 0x2e */
 467         data = TESTPTBL;        /* 0x04; */
 468         reg_w(dev, TV8532_POINTB_L, &data, 1);  /* 0x2f */
 469         data = TESTPTBH;        /* 0x04; */
 470         reg_w(dev, TV8532_POINTB_H, &data, 1);  /* 0x30 */
 471         data = TV8532_CMD_UPDATE;
 472         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 473         /************************************************/
 474         data = 0x01;
 475         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 476         msleep(200);
 477         data = 0x00;
 478         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 479         /************************************************/
 480         tv_8532_setReg(gspca_dev);
 481         /************************************************/
 482         data = 0x0b;
 483         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 484         /************************************************/
 485         tv_8532_setReg(gspca_dev);
 486         /************************************************/
 487         tv_8532_PollReg(gspca_dev);
 488         data = 0x00;
 489         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 490 }
 491
 492 static void sd_stopN(struct gspca_dev *gspca_dev)
 493 {
 494         struct usb_device *dev = gspca_dev->dev;
 495         __u8 data;
 496
 497         data = 0x0b;
 498         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 499 }
 500
 501 static void sd_stop0(struct gspca_dev *gspca_dev)
 502 {
 503 }
 504
 505 static void sd_close(struct gspca_dev *gspca_dev)
 506 {
 507 }
 508
 509 static void tv8532_preprocess(struct gspca_dev *gspca_dev)
 510 {
 511         struct sd *sd = (struct sd *) gspca_dev;
 512 /* we should received a whole frame with header and EOL marker
 513  * in gspca_dev->tmpbuf and return a GBRG pattern in gspca_dev->tmpbuf2
 514  * sequence 2bytes header the Alternate pixels bayer GB 4 bytes
 515  * Alternate pixels bayer RG 4 bytes EOL */
 516         int width = gspca_dev->width;
 517         int height = gspca_dev->height;
 518         unsigned char *dst = sd->tmpbuf2;
 519         unsigned char *data = sd->tmpbuf;
 520         int i;
 521
 522         /* precompute where is the good bayer line */
 523         if (((data[3] + data[width + 7]) >> 1)
 524             + (data[4] >> 2)
 525             + (data[width + 6] >> 1) >= ((data[2] + data[width + 6]) >> 1)
 526             + (data[3] >> 2)
 527             + (data[width + 5] >> 1))
 528                 data += 3;
 529         else
 530                 data += 2;
 531         for (i = 0; i < height / 2; i++) {
 532                 memcpy(dst, data, width);
 533                 data += width + 3;
 534                 dst += width;
 535                 memcpy(dst, data, width);
 536                 data += width + 7;
 537                 dst += width;
 538         }
 539 }
 540
 541 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 542                         struct gspca_frame *frame,      /* target */
 543                         __u8 *data,                     /* isoc packet */
 544                         int len)                        /* iso packet length */
 545 {
 546         struct sd *sd = (struct sd *) gspca_dev;
 547
 548         if (data[0] != 0x80) {
 549                 sd->packet++;
 550                 if (sd->buflen + len > sizeof sd->tmpbuf) {
 551                         if (gspca_dev->last_packet_type != DISCARD_PACKET) {
 552                                 PDEBUG(D_PACK, "buffer overflow");
 553                                 gspca_dev->last_packet_type = DISCARD_PACKET;
 554                         }
 555                         return;
 556                 }
 557                 memcpy(&sd->tmpbuf[sd->buflen], data, len);
 558                 sd->buflen += len;
 559                 return;
 560         }
 561
 562         /* here we detect 0x80 */
 563         /* counter is limited so we need few header for a frame :) */
 564
 565         /* header 0x80 0x80 0x80 0x80 0x80 */
 566         /* packet  00   63  127  145  00   */
 567         /* sof     0     1   1    0    0   */
 568
 569         /* update sequence */
 570         if (sd->packet == 63 || sd->packet == 127)
 571                 sd->synchro = 1;
 572
 573         /* is there a frame start ? */
 574         if (sd->packet >= (gspca_dev->height >> 1) - 1) {
 575                 PDEBUG(D_PACK, "SOF > %d packet %d", sd->synchro,
 576                        sd->packet);
 577                 if (!sd->synchro) {     /* start of frame */
 578                         if (gspca_dev->last_packet_type == FIRST_PACKET) {
 579                                 tv8532_preprocess(gspca_dev);
 580                                 frame = gspca_frame_add(gspca_dev,
 581                                                         LAST_PACKET,
 582                                                         frame, sd->tmpbuf2,
 583                                                         gspca_dev->width *
 584                                                             gspca_dev->width);
 585                         }
 586                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 587                                         frame, data, 0);
 588                         memcpy(sd->tmpbuf, data, len);
 589                         sd->buflen = len;
 590                         sd->packet = 0;
 591                         return;
 592                 }
 593                 if (gspca_dev->last_packet_type != DISCARD_PACKET) {
 594                         PDEBUG(D_PACK,
 595                                "Warning wrong TV8532 frame detection %d",
 596                                sd->packet);
 597                         gspca_dev->last_packet_type = DISCARD_PACKET;
 598                 }
 599                 return;
 600         }
 601
 602         if (!sd->synchro) {
 603                 /* Drop packet frame corrupt */
 604                 PDEBUG(D_PACK, "DROP SOF %d packet %d",
 605                        sd->synchro, sd->packet);
 606                 sd->packet = 0;
 607                 gspca_dev->last_packet_type = DISCARD_PACKET;
 608                 return;
 609         }
 610         sd->synchro = 1;
 611         sd->packet++;
 612         memcpy(&sd->tmpbuf[sd->buflen], data, len);
 613         sd->buflen += len;
 614 }
 615
 616 static void setcontrast(struct gspca_dev *gspca_dev)
 617 {
 618 }
 619
 620 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
 621 {
 622         struct sd *sd = (struct sd *) gspca_dev;
 623
 624         sd->brightness = val;
 625         if (gspca_dev->streaming)
 626                 setbrightness(gspca_dev);
 627         return 0;
 628 }
 629
 630 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
 631 {
 632         struct sd *sd = (struct sd *) gspca_dev;
 633
 634         *val = sd->brightness;
 635         return 0;
 636 }
 637
 638 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
 639 {
 640         struct sd *sd = (struct sd *) gspca_dev;
 641
 642         sd->contrast = val;
 643         if (gspca_dev->streaming)
 644                 setcontrast(gspca_dev);
 645         return 0;
 646 }
 647
 648 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
 649 {
 650         struct sd *sd = (struct sd *) gspca_dev;
 651
 652         *val = sd->contrast;
 653         return 0;
 654 }
 655
 656 /* sub-driver description */
 657 static const struct sd_desc sd_desc = {
 658         .name = MODULE_NAME,
 659         .ctrls = sd_ctrls,
 660         .nctrls = ARRAY_SIZE(sd_ctrls),
 661         .config = sd_config,
 662         .open = sd_open,
 663         .start = sd_start,
 664         .stopN = sd_stopN,
 665         .stop0 = sd_stop0,
 666         .close = sd_close,
 667         .pkt_scan = sd_pkt_scan,
 668 };
 669
 670 /* -- module initialisation -- */
 671 #define DVNM(name) .driver_info = (kernel_ulong_t) name
 672 static const __devinitdata struct usb_device_id device_table[] = {
 673         {USB_DEVICE(0x046d, 0x0920), DVNM("QC Express")},
 674         {USB_DEVICE(0x046d, 0x0921), DVNM("Labtec Webcam")},
 675         {USB_DEVICE(0x0545, 0x808b), DVNM("Veo Stingray")},
 676         {USB_DEVICE(0x0545, 0x8333), DVNM("Veo Stingray")},
 677         {USB_DEVICE(0x0923, 0x010f), DVNM("ICM532 cams")},
 678         {}
 679 };
 680
 681 MODULE_DEVICE_TABLE(usb, device_table);
 682
 683 /* -- device connect -- */
 684 static int sd_probe(struct usb_interface *intf,
 685                     const struct usb_device_id *id)
 686 {
 687         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 688                                THIS_MODULE);
 689 }
 690
 691 static struct usb_driver sd_driver = {
 692         .name = MODULE_NAME,
 693         .id_table = device_table,
 694         .probe = sd_probe,
 695         .disconnect = gspca_disconnect,
 696 };
 697
 698 /* -- module insert / remove -- */
 699 static int __init sd_mod_init(void)
 700 {
 701         if (usb_register(&sd_driver) < 0)
 702                 return -1;
 703         PDEBUG(D_PROBE, "v%s registered", version);
 704         return 0;
 705 }
 706
 707 static void __exit sd_mod_exit(void)
 708 {
 709         usb_deregister(&sd_driver);
 710         PDEBUG(D_PROBE, "deregistered");
 711 }
 712
 713 module_init(sd_mod_init);
 714 module_exit(sd_mod_exit);