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, 0)
  26 static const char version[] = "2.1.0";
  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 cam_mode sif_mode[] = {
  85         {V4L2_PIX_FMT_SBGGR8, 176, 144, 1},
  86         {V4L2_PIX_FMT_SBGGR8, 352, 288, 0},
  87 };
  88
  89 /*
  90  * Initialization data: this is the first set-up data written to the
  91  * device (before the open data).
  92  */
  93 #define TESTCLK 0x10            /* reg 0x2c -> 0x12 //10 */
  94 #define TESTCOMP 0x90           /* reg 0x28 -> 0x80 */
  95 #define TESTLINE 0x81           /* reg 0x29 -> 0x81 */
  96 #define QCIFLINE 0x41           /* reg 0x29 -> 0x81 */
  97 #define TESTPTL 0x14            /* reg 0x2D -> 0x14 */
  98 #define TESTPTH 0x01            /* reg 0x2E -> 0x01 */
  99 #define TESTPTBL 0x12           /* reg 0x2F -> 0x0a */
 100 #define TESTPTBH 0x01           /* reg 0x30 -> 0x01 */
 101 #define ADWIDTHL 0xe8           /* reg 0x0c -> 0xe8 */
 102 #define ADWIDTHH 0x03           /* reg 0x0d -> 0x03 */
 103 #define ADHEIGHL 0x90           /* reg 0x0e -> 0x91 //93 */
 104 #define ADHEIGHH 0x01           /* reg 0x0f -> 0x01 */
 105 #define EXPOL 0x8f              /* reg 0x1c -> 0x8f */
 106 #define EXPOH 0x01              /* reg 0x1d -> 0x01 */
 107 #define ADCBEGINL 0x44          /* reg 0x10 -> 0x46 //47 */
 108 #define ADCBEGINH 0x00          /* reg 0x11 -> 0x00 */
 109 #define ADRBEGINL 0x0a          /* reg 0x14 -> 0x0b //0x0c */
 110 #define ADRBEGINH 0x00          /* reg 0x15 -> 0x00 */
 111 #define TV8532_CMD_UPDATE 0x84
 112
 113 #define TV8532_EEprom_Add 0x03
 114 #define TV8532_EEprom_DataL 0x04
 115 #define TV8532_EEprom_DataM 0x05
 116 #define TV8532_EEprom_DataH 0x06
 117 #define TV8532_EEprom_TableLength 0x07
 118 #define TV8532_EEprom_Write 0x08
 119 #define TV8532_PART_CTRL 0x00
 120 #define TV8532_CTRL 0x01
 121 #define TV8532_CMD_EEprom_Open 0x30
 122 #define TV8532_CMD_EEprom_Close 0x29
 123 #define TV8532_UDP_UPDATE 0x31
 124 #define TV8532_GPIO 0x39
 125 #define TV8532_GPIO_OE 0x3B
 126 #define TV8532_REQ_RegWrite 0x02
 127 #define TV8532_REQ_RegRead 0x03
 128
 129 #define TV8532_ADWIDTH_L 0x0C
 130 #define TV8532_ADWIDTH_H 0x0D
 131 #define TV8532_ADHEIGHT_L 0x0E
 132 #define TV8532_ADHEIGHT_H 0x0F
 133 #define TV8532_EXPOSURE 0x1C
 134 #define TV8532_QUANT_COMP 0x28
 135 #define TV8532_MODE_PACKET 0x29
 136 #define TV8532_SETCLK 0x2C
 137 #define TV8532_POINT_L 0x2D
 138 #define TV8532_POINT_H 0x2E
 139 #define TV8532_POINTB_L 0x2F
 140 #define TV8532_POINTB_H 0x30
 141 #define TV8532_BUDGET_L 0x2A
 142 #define TV8532_BUDGET_H 0x2B
 143 #define TV8532_VID_L 0x34
 144 #define TV8532_VID_H 0x35
 145 #define TV8532_PID_L 0x36
 146 #define TV8532_PID_H 0x37
 147 #define TV8532_DeviceID 0x83
 148 #define TV8532_AD_SLOPE 0x91
 149 #define TV8532_AD_BITCTRL 0x94
 150 #define TV8532_AD_COLBEGIN_L 0x10
 151 #define TV8532_AD_COLBEGIN_H 0x11
 152 #define TV8532_AD_ROWBEGIN_L 0x14
 153 #define TV8532_AD_ROWBEGIN_H 0x15
 154
 155 static __u32 tv_8532_eeprom_data[] = {
 156 /*      add             dataL      dataM        dataH */
 157         0x00010001, 0x01018011, 0x02050014, 0x0305001c,
 158         0x040d001e, 0x0505001f, 0x06050519, 0x0705011b,
 159         0x0805091e, 0x090d892e, 0x0a05892f, 0x0b050dd9,
 160         0x0c0509f1, 0
 161 };
 162
 163 static void reg_r(struct usb_device *dev,
 164                   __u16 index, __u8 *buffer)
 165 {
 166         usb_control_msg(dev,
 167                         usb_rcvctrlpipe(dev, 0),
 168                         TV8532_REQ_RegRead,
 169                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 170                         0,      /* value */
 171                         index, buffer, sizeof(__u8),
 172                         500);
 173 }
 174
 175 static void reg_w(struct usb_device *dev,
 176                   __u16 index, __u8 *buffer, __u16 length)
 177 {
 178         usb_control_msg(dev,
 179                         usb_sndctrlpipe(dev, 0),
 180                         TV8532_REQ_RegWrite,
 181                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 182                         0,      /* value */
 183                         index, buffer, length, 500);
 184 }
 185
 186 static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 187 {
 188         int i = 0;
 189         __u8 reg, data0, data1, data2, datacmd;
 190         struct usb_device *dev = gspca_dev->dev;
 191
 192         datacmd = 0xb0;;
 193         reg_w(dev, TV8532_GPIO, &datacmd, 1);
 194         datacmd = TV8532_CMD_EEprom_Open;
 195         reg_w(dev, TV8532_CTRL, &datacmd, 1);
 196 /*      msleep(1); */
 197         while (tv_8532_eeprom_data[i]) {
 198                 reg = (tv_8532_eeprom_data[i] & 0xff000000) >> 24;
 199                 reg_w(dev, TV8532_EEprom_Add, &reg, 1);
 200                 /* msleep(1); */
 201                 data0 = (tv_8532_eeprom_data[i] & 0x000000ff);
 202                 reg_w(dev, TV8532_EEprom_DataL, &data0, 1);
 203                 /* msleep(1); */
 204                 data1 = (tv_8532_eeprom_data[i] & 0x0000FF00) >> 8;
 205                 reg_w(dev, TV8532_EEprom_DataM, &data1, 1);
 206                 /* msleep(1); */
 207                 data2 = (tv_8532_eeprom_data[i] & 0x00FF0000) >> 16;
 208                 reg_w(dev, TV8532_EEprom_DataH, &data2, 1);
 209                 /* msleep(1); */
 210                 datacmd = 0;
 211                 reg_w(dev, TV8532_EEprom_Write, &datacmd, 1);
 212                 /* msleep(10); */
 213                 i++;
 214         }
 215         datacmd = i;
 216         reg_w(dev, TV8532_EEprom_TableLength, &datacmd, 1);
 217 /*      msleep(1); */
 218         datacmd = TV8532_CMD_EEprom_Close;
 219         reg_w(dev, TV8532_CTRL, &datacmd, 1);
 220         msleep(10);
 221 }
 222
 223 /* this function is called at probe time */
 224 static int sd_config(struct gspca_dev *gspca_dev,
 225                      const struct usb_device_id *id)
 226 {
 227         struct sd *sd = (struct sd *) gspca_dev;
 228         struct cam *cam;
 229
 230         tv_8532WriteEEprom(gspca_dev);
 231
 232         cam = &gspca_dev->cam;
 233         cam->dev_name = (char *) id->driver_info;
 234         cam->epaddr = 1;
 235         cam->cam_mode = sif_mode;
 236         cam->nmodes = sizeof sif_mode / sizeof sif_mode[0];
 237
 238         sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
 239         sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
 240         return 0;
 241 }
 242
 243 static void tv_8532ReadRegisters(struct gspca_dev *gspca_dev)
 244 {
 245         struct usb_device *dev = gspca_dev->dev;
 246         __u8 data = 0;
 247 /*      __u16 vid, pid; */
 248
 249         reg_r(dev, 0x0001, &data);
 250         PDEBUG(D_USBI, "register 0x01-> %x", data);
 251         reg_r(dev, 0x0002, &data);
 252         PDEBUG(D_USBI, "register 0x02-> %x", data);
 253         reg_r(dev, TV8532_ADWIDTH_L, &data);
 254         reg_r(dev, TV8532_ADWIDTH_H, &data);
 255         reg_r(dev, TV8532_QUANT_COMP, &data);
 256         reg_r(dev, TV8532_MODE_PACKET, &data);
 257         reg_r(dev, TV8532_SETCLK, &data);
 258         reg_r(dev, TV8532_POINT_L, &data);
 259         reg_r(dev, TV8532_POINT_H, &data);
 260         reg_r(dev, TV8532_POINTB_L, &data);
 261         reg_r(dev, TV8532_POINTB_H, &data);
 262         reg_r(dev, TV8532_BUDGET_L, &data);
 263         reg_r(dev, TV8532_BUDGET_H, &data);
 264         reg_r(dev, TV8532_VID_L, &data);
 265         reg_r(dev, TV8532_VID_H, &data);
 266         reg_r(dev, TV8532_PID_L, &data);
 267         reg_r(dev, TV8532_PID_H, &data);
 268         reg_r(dev, TV8532_DeviceID, &data);
 269         reg_r(dev, TV8532_AD_COLBEGIN_L, &data);
 270         reg_r(dev, TV8532_AD_COLBEGIN_H, &data);
 271         reg_r(dev, TV8532_AD_ROWBEGIN_L, &data);
 272         reg_r(dev, TV8532_AD_ROWBEGIN_H, &data);
 273 }
 274
 275 static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 276 {
 277         struct usb_device *dev = gspca_dev->dev;
 278         __u8 data = 0;
 279         __u8 value[2] = { 0, 0 };
 280
 281         data = ADCBEGINL;
 282         reg_w(dev, TV8532_AD_COLBEGIN_L, &data, 1);     /* 0x10 */
 283         data = ADCBEGINH;       /* also digital gain */
 284         reg_w(dev, TV8532_AD_COLBEGIN_H, &data, 1);
 285         data = TV8532_CMD_UPDATE;
 286         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 287
 288         data = 0x0a;
 289         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 290         /******************************************************/
 291         data = ADHEIGHL;
 292         reg_w(dev, TV8532_ADHEIGHT_L, &data, 1);        /* 0e */
 293         data = ADHEIGHH;
 294         reg_w(dev, TV8532_ADHEIGHT_H, &data, 1);        /* 0f */
 295         value[0] = EXPOL;
 296         value[1] = EXPOH;       /* 350d 0x014c; */
 297         reg_w(dev, TV8532_EXPOSURE, value, 2);  /* 1c */
 298         data = ADCBEGINL;
 299         reg_w(dev, TV8532_AD_COLBEGIN_L, &data, 1);     /* 0x10 */
 300         data = ADCBEGINH;       /* also digital gain */
 301         reg_w(dev, TV8532_AD_COLBEGIN_H, &data, 1);
 302         data = ADRBEGINL;
 303         reg_w(dev, TV8532_AD_ROWBEGIN_L, &data, 1);     /* 0x14 */
 304
 305         data = 0x00;
 306         reg_w(dev, TV8532_AD_SLOPE, &data, 1);  /* 0x91 */
 307         data = 0x02;
 308         reg_w(dev, TV8532_AD_BITCTRL, &data, 1);        /* 0x94 */
 309
 310
 311         data = TV8532_CMD_EEprom_Close;
 312         reg_w(dev, TV8532_CTRL, &data, 1);      /* 0x01 */
 313
 314         data = 0x00;
 315         reg_w(dev, TV8532_AD_SLOPE, &data, 1);  /* 0x91 */
 316         data = TV8532_CMD_UPDATE;
 317         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 318 }
 319
 320 static void tv_8532_PollReg(struct gspca_dev *gspca_dev)
 321 {
 322         struct usb_device *dev = gspca_dev->dev;
 323         __u8 data = 0;
 324         int i;
 325
 326         /* strange polling from tgc */
 327         for (i = 0; i < 10; i++) {
 328                 data = TESTCLK; /* 0x48; //0x08; */
 329                 reg_w(dev, TV8532_SETCLK, &data, 1);    /* 0x2c */
 330                 data = TV8532_CMD_UPDATE;
 331                 reg_w(dev, TV8532_PART_CTRL, &data, 1);
 332                 data = 0x01;
 333                 reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 334         }
 335 }
 336
 337 /* this function is called at open time */
 338 static int sd_open(struct gspca_dev *gspca_dev)
 339 {
 340         struct usb_device *dev = gspca_dev->dev;
 341         __u8 data = 0;
 342         __u8 dataStart = 0;
 343         __u8 value[2] = { 0, 0 };
 344
 345         data = 0x32;
 346         reg_w(dev, TV8532_AD_SLOPE, &data, 1);
 347         data = 0;
 348         reg_w(dev, TV8532_AD_BITCTRL, &data, 1);
 349         tv_8532ReadRegisters(gspca_dev);
 350         data = 0x0b;
 351         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 352         value[0] = ADHEIGHL;
 353         value[1] = ADHEIGHH;    /* 401d 0x0169; */
 354         reg_w(dev, TV8532_ADHEIGHT_L, value, 2);        /* 0e */
 355         value[0] = EXPOL;
 356         value[1] = EXPOH;       /* 350d 0x014c; */
 357         reg_w(dev, TV8532_EXPOSURE, value, 2);  /* 1c */
 358         data = ADWIDTHL;        /* 0x20; */
 359         reg_w(dev, TV8532_ADWIDTH_L, &data, 1); /* 0x0c */
 360         data = ADWIDTHH;
 361         reg_w(dev, TV8532_ADWIDTH_H, &data, 1); /* 0x0d */
 362
 363         /*******************************************************************/
 364         data = TESTCOMP;        /* 0x72 compressed mode */
 365         reg_w(dev, TV8532_QUANT_COMP, &data, 1);        /* 0x28 */
 366         data = TESTLINE;        /* 0x84; // CIF | 4 packet */
 367         reg_w(dev, TV8532_MODE_PACKET, &data, 1);       /* 0x29 */
 368
 369         /************************************************/
 370         data = TESTCLK;         /* 0x48; //0x08; */
 371         reg_w(dev, TV8532_SETCLK, &data, 1);    /* 0x2c */
 372         data = TESTPTL;         /* 0x38; */
 373         reg_w(dev, TV8532_POINT_L, &data, 1);   /* 0x2d */
 374         data = TESTPTH;         /* 0x04; */
 375         reg_w(dev, TV8532_POINT_H, &data, 1);   /* 0x2e */
 376         dataStart = TESTPTBL;   /* 0x04; */
 377         reg_w(dev, TV8532_POINTB_L, &dataStart, 1);     /* 0x2f */
 378         data = TESTPTBH;        /* 0x04; */
 379         reg_w(dev, TV8532_POINTB_H, &data, 1);  /* 0x30 */
 380         data = TV8532_CMD_UPDATE;
 381         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 382         /*************************************************/
 383         data = 0x01;
 384         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 385         msleep(200);
 386         data = 0x00;
 387         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 388         /*************************************************/
 389         tv_8532_setReg(gspca_dev);
 390         /*************************************************/
 391         data = 0x0b;
 392         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 393         /*************************************************/
 394         tv_8532_setReg(gspca_dev);
 395         /*************************************************/
 396         tv_8532_PollReg(gspca_dev);
 397         return 0;
 398 }
 399
 400 static void setbrightness(struct gspca_dev *gspca_dev)
 401 {
 402         struct sd *sd = (struct sd *) gspca_dev;
 403         __u8 value[2];
 404         __u8 data;
 405         int brightness = sd->brightness;
 406
 407         value[1] = (brightness >> 8) & 0xff;
 408         value[0] = (brightness) & 0xff;
 409         reg_w(gspca_dev->dev, TV8532_EXPOSURE, value, 2);       /* 1c */
 410         data = TV8532_CMD_UPDATE;
 411         reg_w(gspca_dev->dev, TV8532_PART_CTRL, &data, 1);
 412 }
 413
 414 /* -- start the camera -- */
 415 static void sd_start(struct gspca_dev *gspca_dev)
 416 {
 417         struct usb_device *dev = gspca_dev->dev;
 418         __u8 data;
 419         __u8 value[2];
 420
 421         data = 0x32;
 422         reg_w(dev, TV8532_AD_SLOPE, &data, 1);
 423         data = 0;
 424         reg_w(dev, TV8532_AD_BITCTRL, &data, 1);
 425         tv_8532ReadRegisters(gspca_dev);
 426         data = 0x0b;
 427         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 428         value[0] = ADHEIGHL;
 429         value[1] = ADHEIGHH;    /* 401d 0x0169; */
 430         reg_w(dev, TV8532_ADHEIGHT_L, value, 2);        /* 0e */
 431 /*      value[0] = EXPOL; value[1] =EXPOH;               * 350d 0x014c; */
 432 /*      reg_w(dev,TV8532_REQ_RegWrite,0,TV8532_EXPOSURE,value,2);  * 1c */
 433         setbrightness(gspca_dev);
 434
 435         data = ADWIDTHL;        /* 0x20; */
 436         reg_w(dev, TV8532_ADWIDTH_L, &data, 1); /* 0x0c */
 437         data = ADWIDTHH;
 438         reg_w(dev, TV8532_ADWIDTH_H, &data, 1); /* 0x0d */
 439
 440         /************************************************/
 441         data = TESTCOMP;        /* 0x72 compressed mode */
 442         reg_w(dev, TV8532_QUANT_COMP, &data, 1);        /* 0x28 */
 443         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].mode) {
 444                 /* 176x144 */
 445                 data = QCIFLINE;        /* 0x84; // CIF | 4 packet */
 446                 reg_w(dev, TV8532_MODE_PACKET, &data, 1);       /* 0x29 */
 447         } else {
 448                 /* 352x288 */
 449                 data = TESTLINE;        /* 0x84; // CIF | 4 packet */
 450                 reg_w(dev, TV8532_MODE_PACKET, &data, 1);       /* 0x29 */
 451         }
 452         /************************************************/
 453         data = TESTCLK;         /* 0x48; //0x08; */
 454         reg_w(dev, TV8532_SETCLK, &data, 1);    /* 0x2c */
 455         data = TESTPTL;         /* 0x38; */
 456         reg_w(dev, TV8532_POINT_L, &data, 1);   /* 0x2d */
 457         data = TESTPTH;         /* 0x04; */
 458         reg_w(dev, TV8532_POINT_H, &data, 1);   /* 0x2e */
 459         data = TESTPTBL;        /* 0x04; */
 460         reg_w(dev, TV8532_POINTB_L, &data, 1);  /* 0x2f */
 461         data = TESTPTBH;        /* 0x04; */
 462         reg_w(dev, TV8532_POINTB_H, &data, 1);  /* 0x30 */
 463         data = TV8532_CMD_UPDATE;
 464         reg_w(dev, TV8532_PART_CTRL, &data, 1); /* 0x00<-0x84 */
 465         /************************************************/
 466         data = 0x01;
 467         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 468         msleep(200);
 469         data = 0x00;
 470         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 471         /************************************************/
 472         tv_8532_setReg(gspca_dev);
 473         /************************************************/
 474         data = 0x0b;
 475         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 476         /************************************************/
 477         tv_8532_setReg(gspca_dev);
 478         /************************************************/
 479         tv_8532_PollReg(gspca_dev);
 480         data = 0x00;
 481         reg_w(dev, TV8532_UDP_UPDATE, &data, 1);        /* 0x31 */
 482 }
 483
 484 static void sd_stopN(struct gspca_dev *gspca_dev)
 485 {
 486         struct usb_device *dev = gspca_dev->dev;
 487         __u8 data;
 488
 489         data = 0x0b;
 490         reg_w(dev, TV8532_GPIO_OE, &data, 1);
 491 }
 492
 493 static void sd_stop0(struct gspca_dev *gspca_dev)
 494 {
 495 }
 496
 497 static void sd_close(struct gspca_dev *gspca_dev)
 498 {
 499 }
 500
 501 static void tv8532_preprocess(struct gspca_dev *gspca_dev)
 502 {
 503         struct sd *sd = (struct sd *) gspca_dev;
 504 /* we should received a whole frame with header and EOL marker
 505  * in gspca_dev->tmpbuf and return a GBRG pattern in gspca_dev->tmpbuf2
 506  * sequence 2bytes header the Alternate pixels bayer GB 4 bytes
 507  * Alternate pixels bayer RG 4 bytes EOL */
 508         int width = gspca_dev->width;
 509         int height = gspca_dev->height;
 510         unsigned char *dst = sd->tmpbuf2;
 511         unsigned char *data = sd->tmpbuf;
 512         int i;
 513
 514         /* precompute where is the good bayer line */
 515         if (((data[3] + data[width + 7]) >> 1)
 516             + (data[4] >> 2)
 517             + (data[width + 6] >> 1) >= ((data[2] + data[width + 6]) >> 1)
 518             + (data[3] >> 2)
 519             + (data[width + 5] >> 1))
 520                 data += 3;
 521         else
 522                 data += 2;
 523         for (i = 0; i < height / 2; i++) {
 524                 memcpy(dst, data, width);
 525                 data += width + 3;
 526                 dst += width;
 527                 memcpy(dst, data, width);
 528                 data += width + 7;
 529                 dst += width;
 530         }
 531 }
 532
 533 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 534                         struct gspca_frame *frame,      /* target */
 535                         __u8 *data,                     /* isoc packet */
 536                         int len)                        /* iso packet length */
 537 {
 538         struct sd *sd = (struct sd *) gspca_dev;
 539
 540         if (data[0] != 0x80) {
 541                 sd->packet++;
 542                 if (sd->buflen + len > sizeof sd->tmpbuf) {
 543                         if (gspca_dev->last_packet_type != DISCARD_PACKET) {
 544                                 PDEBUG(D_PACK, "buffer overflow");
 545                                 gspca_dev->last_packet_type = DISCARD_PACKET;
 546                         }
 547                         return;
 548                 }
 549                 memcpy(&sd->tmpbuf[sd->buflen], data, len);
 550                 sd->buflen += len;
 551                 return;
 552         }
 553
 554         /* here we detect 0x80 */
 555         /* counter is limited so we need few header for a frame :) */
 556
 557         /* header 0x80 0x80 0x80 0x80 0x80 */
 558         /* packet  00   63  127  145  00   */
 559         /* sof     0     1   1    0    0   */
 560
 561         /* update sequence */
 562         if (sd->packet == 63 || sd->packet == 127)
 563                 sd->synchro = 1;
 564
 565         /* is there a frame start ? */
 566         if (sd->packet >= (gspca_dev->height >> 1) - 1) {
 567                 PDEBUG(D_PACK, "SOF > %d packet %d", sd->synchro,
 568                        sd->packet);
 569                 if (!sd->synchro) {     /* start of frame */
 570                         if (gspca_dev->last_packet_type == FIRST_PACKET) {
 571                                 tv8532_preprocess(gspca_dev);
 572                                 frame = gspca_frame_add(gspca_dev,
 573                                                         LAST_PACKET,
 574                                                         frame, sd->tmpbuf2,
 575                                                         gspca_dev->width *
 576                                                             gspca_dev->width);
 577                         }
 578                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 579                                         frame, data, 0);
 580                         memcpy(sd->tmpbuf, data, len);
 581                         sd->buflen = len;
 582                         sd->packet = 0;
 583                         return;
 584                 }
 585                 if (gspca_dev->last_packet_type != DISCARD_PACKET) {
 586                         PDEBUG(D_PACK,
 587                                "Warning wrong TV8532 frame detection %d",
 588                                sd->packet);
 589                         gspca_dev->last_packet_type = DISCARD_PACKET;
 590                 }
 591                 return;
 592         }
 593
 594         if (!sd->synchro) {
 595                 /* Drop packet frame corrupt */
 596                 PDEBUG(D_PACK, "DROP SOF %d packet %d",
 597                        sd->synchro, sd->packet);
 598                 sd->packet = 0;
 599                 gspca_dev->last_packet_type = DISCARD_PACKET;
 600                 return;
 601         }
 602         sd->synchro = 1;
 603         sd->packet++;
 604         memcpy(&sd->tmpbuf[sd->buflen], data, len);
 605         sd->buflen += len;
 606 }
 607
 608 static void setcontrast(struct gspca_dev *gspca_dev)
 609 {
 610 }
 611
 612 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
 613 {
 614         struct sd *sd = (struct sd *) gspca_dev;
 615
 616         sd->brightness = val;
 617         if (gspca_dev->streaming)
 618                 setbrightness(gspca_dev);
 619         return 0;
 620 }
 621
 622 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
 623 {
 624         struct sd *sd = (struct sd *) gspca_dev;
 625
 626         *val = sd->brightness;
 627         return 0;
 628 }
 629
 630 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
 631 {
 632         struct sd *sd = (struct sd *) gspca_dev;
 633
 634         sd->contrast = val;
 635         if (gspca_dev->streaming)
 636                 setcontrast(gspca_dev);
 637         return 0;
 638 }
 639
 640 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
 641 {
 642         struct sd *sd = (struct sd *) gspca_dev;
 643
 644         *val = sd->contrast;
 645         return 0;
 646 }
 647
 648 /* sub-driver description */
 649 static struct sd_desc sd_desc = {
 650         .name = MODULE_NAME,
 651         .ctrls = sd_ctrls,
 652         .nctrls = ARRAY_SIZE(sd_ctrls),
 653         .config = sd_config,
 654         .open = sd_open,
 655         .start = sd_start,
 656         .stopN = sd_stopN,
 657         .stop0 = sd_stop0,
 658         .close = sd_close,
 659         .pkt_scan = sd_pkt_scan,
 660 };
 661
 662 /* -- module initialisation -- */
 663 #define DVNM(name) .driver_info = (kernel_ulong_t) name
 664 static __devinitdata struct usb_device_id device_table[] = {
 665         {USB_DEVICE(0x046d, 0x0920), DVNM("QC Express")},
 666         {USB_DEVICE(0x046d, 0x0921), DVNM("Labtec Webcam")},
 667         {USB_DEVICE(0x0545, 0x808b), DVNM("Veo Stingray")},
 668         {USB_DEVICE(0x0545, 0x8333), DVNM("Veo Stingray")},
 669         {USB_DEVICE(0x0923, 0x010f), DVNM("ICM532 cams")},
 670         {}
 671 };
 672
 673 MODULE_DEVICE_TABLE(usb, device_table);
 674
 675 /* -- device connect -- */
 676 static int sd_probe(struct usb_interface *intf,
 677                     const struct usb_device_id *id)
 678 {
 679         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 680                                THIS_MODULE);
 681 }
 682
 683 static struct usb_driver sd_driver = {
 684         .name = MODULE_NAME,
 685         .id_table = device_table,
 686         .probe = sd_probe,
 687         .disconnect = gspca_disconnect,
 688 };
 689
 690 /* -- module insert / remove -- */
 691 static int __init sd_mod_init(void)
 692 {
 693         if (usb_register(&sd_driver) < 0)
 694                 return -1;
 695         PDEBUG(D_PROBE, "v%s registered", version);
 696         return 0;
 697 }
 698
 699 static void __exit sd_mod_exit(void)
 700 {
 701         usb_deregister(&sd_driver);
 702         PDEBUG(D_PROBE, "deregistered");
 703 }
 704
 705 module_init(sd_mod_init);
 706 module_exit(sd_mod_exit);