drivers/media/video/gspca/stv06xx/stv06xx.c

   1 /*
   2  * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
   3  *                    Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
   4  * Copyright (c) 2002, 2003 Tuukka Toivonen
   5  * Copyright (c) 2008 Erik Andrén
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * P/N 861037:      Sensor HDCS1000        ASIC STV0600
  22  * P/N 861050-0010: Sensor HDCS1000        ASIC STV0600
  23  * P/N 861050-0020: Sensor Photobit PB100  ASIC STV0600-1 - QuickCam Express
  24  * P/N 861055:      Sensor ST VV6410       ASIC STV0610   - LEGO cam
  25  * P/N 861075-0040: Sensor HDCS1000        ASIC
  26  * P/N 961179-0700: Sensor ST VV6410       ASIC STV0602   - Dexxa WebCam USB
  27  * P/N 861040-0000: Sensor ST VV6410       ASIC STV0610   - QuickCam Web
  28  */
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/input.h>
  33 #include "stv06xx_sensor.h"
  34
  35 MODULE_AUTHOR("Erik Andrén");
  36 MODULE_DESCRIPTION("STV06XX USB Camera Driver");
  37 MODULE_LICENSE("GPL");
  38
  39 static int dump_bridge;
  40 static int dump_sensor;
  41
  42 int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
  43 {
  44         int err;
  45         struct usb_device *udev = sd->gspca_dev.dev;
  46         __u8 *buf = sd->gspca_dev.usb_buf;
  47         u8 len = (i2c_data > 0xff) ? 2 : 1;
  48
  49         buf[0] = i2c_data & 0xff;
  50         buf[1] = (i2c_data >> 8) & 0xff;
  51
  52         err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  53                               0x04, 0x40, address, 0, buf, len,
  54                               STV06XX_URB_MSG_TIMEOUT);
  55
  56         PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
  57                i2c_data, address, err);
  58
  59         return (err < 0) ? err : 0;
  60 }
  61
  62 int stv06xx_read_bridge(struct sd *sd, u16 address, u8 *i2c_data)
  63 {
  64         int err;
  65         struct usb_device *udev = sd->gspca_dev.dev;
  66         __u8 *buf = sd->gspca_dev.usb_buf;
  67
  68         err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  69                               0x04, 0xc0, address, 0, buf, 1,
  70                               STV06XX_URB_MSG_TIMEOUT);
  71
  72         *i2c_data = buf[0];
  73
  74         PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
  75                *i2c_data, address, err);
  76
  77         return (err < 0) ? err : 0;
  78 }
  79
  80 /* Wraps the normal write sensor bytes / words functions for writing a
  81    single value */
  82 int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
  83 {
  84         if (sd->sensor->i2c_len == 2) {
  85                 u16 data[2] = { address, value };
  86                 return stv06xx_write_sensor_words(sd, data, 1);
  87         } else {
  88                 u8 data[2] = { address, value };
  89                 return stv06xx_write_sensor_bytes(sd, data, 1);
  90         }
  91 }
  92
  93 static int stv06xx_write_sensor_finish(struct sd *sd)
  94 {
  95         int err = 0;
  96
  97         if (sd->bridge == BRIDGE_STV610) {
  98                 struct usb_device *udev = sd->gspca_dev.dev;
  99                 __u8 *buf = sd->gspca_dev.usb_buf;
 100
 101                 buf[0] = 0;
 102                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 103                                       0x04, 0x40, 0x1704, 0, buf, 1,
 104                                       STV06XX_URB_MSG_TIMEOUT);
 105         }
 106
 107         return (err < 0) ? err : 0;
 108 }
 109
 110 int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len)
 111 {
 112         int err, i, j;
 113         struct usb_device *udev = sd->gspca_dev.dev;
 114         __u8 *buf = sd->gspca_dev.usb_buf;
 115
 116         PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
 117         for (i = 0; i < len;) {
 118                 /* Build the command buffer */
 119                 memset(buf, 0, I2C_BUFFER_LENGTH);
 120                 for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) {
 121                         buf[j] = data[2*i];
 122                         buf[0x10 + j] = data[2*i+1];
 123                         PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x",
 124                         data[2*i+1], data[2*i]);
 125                 }
 126                 buf[0x20] = sd->sensor->i2c_addr;
 127                 buf[0x21] = j - 1; /* Number of commands to send - 1 */
 128                 buf[0x22] = I2C_WRITE_CMD;
 129                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 130                                       0x04, 0x40, 0x0400, 0, buf,
 131                                       I2C_BUFFER_LENGTH,
 132                                       STV06XX_URB_MSG_TIMEOUT);
 133                 if (err < 0)
 134                         return err;
 135         }
 136         return stv06xx_write_sensor_finish(sd);
 137 }
 138
 139 int stv06xx_write_sensor_words(struct sd *sd, const u16 *data, u8 len)
 140 {
 141         int err, i, j;
 142         struct usb_device *udev = sd->gspca_dev.dev;
 143         __u8 *buf = sd->gspca_dev.usb_buf;
 144
 145         PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
 146
 147         for (i = 0; i < len;) {
 148                 /* Build the command buffer */
 149                 memset(buf, 0, I2C_BUFFER_LENGTH);
 150                 for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
 151                         buf[j] = data[2*i];
 152                         buf[0x10 + j * 2] = data[2*i+1];
 153                         buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
 154                         PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
 155                                 data[2*i+1], data[2*i]);
 156                 }
 157                 buf[0x20] = sd->sensor->i2c_addr;
 158                 buf[0x21] = j - 1; /* Number of commands to send - 1 */
 159                 buf[0x22] = I2C_WRITE_CMD;
 160                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 161                                 0x04, 0x40, 0x0400, 0, buf,
 162                                 I2C_BUFFER_LENGTH,
 163                                 STV06XX_URB_MSG_TIMEOUT);
 164                 if (err < 0)
 165                         return err;
 166         }
 167         return stv06xx_write_sensor_finish(sd);
 168 }
 169
 170 int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value)
 171 {
 172         int err;
 173         struct usb_device *udev = sd->gspca_dev.dev;
 174         __u8 *buf = sd->gspca_dev.usb_buf;
 175
 176         err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
 177         if (err < 0)
 178                 return err;
 179
 180         /* Clear mem */
 181         memset(buf, 0, I2C_BUFFER_LENGTH);
 182
 183         buf[0] = address;
 184         buf[0x20] = sd->sensor->i2c_addr;
 185         buf[0x21] = 0;
 186
 187         /* Read I2C register */
 188         buf[0x22] = I2C_READ_CMD;
 189
 190         err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 191                               0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
 192                               STV06XX_URB_MSG_TIMEOUT);
 193         if (err < 0) {
 194                 pr_err("I2C: Read error writing address: %d\n", err);
 195                 return err;
 196         }
 197
 198         err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 199                               0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
 200                               STV06XX_URB_MSG_TIMEOUT);
 201         if (sd->sensor->i2c_len == 2)
 202                 *value = buf[0] | (buf[1] << 8);
 203         else
 204                 *value = buf[0];
 205
 206         PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
 207                *value, address, err);
 208
 209         return (err < 0) ? err : 0;
 210 }
 211
 212 /* Dumps all bridge registers */
 213 static void stv06xx_dump_bridge(struct sd *sd)
 214 {
 215         int i;
 216         u8 data, buf;
 217
 218         pr_info("Dumping all stv06xx bridge registers\n");
 219         for (i = 0x1400; i < 0x160f; i++) {
 220                 stv06xx_read_bridge(sd, i, &data);
 221
 222                 pr_info("Read 0x%x from address 0x%x\n", data, i);
 223         }
 224
 225         pr_info("Testing stv06xx bridge registers for writability\n");
 226         for (i = 0x1400; i < 0x160f; i++) {
 227                 stv06xx_read_bridge(sd, i, &data);
 228                 buf = data;
 229
 230                 stv06xx_write_bridge(sd, i, 0xff);
 231                 stv06xx_read_bridge(sd, i, &data);
 232                 if (data == 0xff)
 233                         pr_info("Register 0x%x is read/write\n", i);
 234                 else if (data != buf)
 235                         pr_info("Register 0x%x is read/write, but only partially\n",
 236                                 i);
 237                 else
 238                         pr_info("Register 0x%x is read-only\n", i);
 239
 240                 stv06xx_write_bridge(sd, i, buf);
 241         }
 242 }
 243
 244 /* this function is called at probe and resume time */
 245 static int stv06xx_init(struct gspca_dev *gspca_dev)
 246 {
 247         struct sd *sd = (struct sd *) gspca_dev;
 248         int err;
 249
 250         PDEBUG(D_PROBE, "Initializing camera");
 251
 252         /* Let the usb init settle for a bit
 253            before performing the initialization */
 254         msleep(250);
 255
 256         err = sd->sensor->init(sd);
 257
 258         if (dump_sensor && sd->sensor->dump)
 259                 sd->sensor->dump(sd);
 260
 261         return (err < 0) ? err : 0;
 262 }
 263
 264 /* Start the camera */
 265 static int stv06xx_start(struct gspca_dev *gspca_dev)
 266 {
 267         struct sd *sd = (struct sd *) gspca_dev;
 268         struct usb_host_interface *alt;
 269         struct usb_interface *intf;
 270         int err, packet_size;
 271
 272         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
 273         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
 274         if (!alt) {
 275                 PDEBUG(D_ERR, "Couldn't get altsetting");
 276                 return -EIO;
 277         }
 278
 279         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 280         err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
 281         if (err < 0)
 282                 return err;
 283
 284         /* Prepare the sensor for start */
 285         err = sd->sensor->start(sd);
 286         if (err < 0)
 287                 goto out;
 288
 289         /* Start isochronous streaming */
 290         err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
 291
 292 out:
 293         if (err < 0)
 294                 PDEBUG(D_STREAM, "Starting stream failed");
 295         else
 296                 PDEBUG(D_STREAM, "Started streaming");
 297
 298         return (err < 0) ? err : 0;
 299 }
 300
 301 static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
 302 {
 303         struct usb_host_interface *alt;
 304         struct sd *sd = (struct sd *) gspca_dev;
 305
 306         /* Start isoc bandwidth "negotiation" at max isoc bandwidth */
 307         alt = &gspca_dev->dev->config->intf_cache[0]->altsetting[1];
 308         alt->endpoint[0].desc.wMaxPacketSize =
 309                 cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);
 310
 311         return 0;
 312 }
 313
 314 static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
 315 {
 316         int ret, packet_size, min_packet_size;
 317         struct usb_host_interface *alt;
 318         struct sd *sd = (struct sd *) gspca_dev;
 319
 320         alt = &gspca_dev->dev->config->intf_cache[0]->altsetting[1];
 321         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 322         min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
 323         if (packet_size <= min_packet_size)
 324                 return -EIO;
 325
 326         packet_size -= 100;
 327         if (packet_size < min_packet_size)
 328                 packet_size = min_packet_size;
 329         alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);
 330
 331         ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 332         if (ret < 0)
 333                 PDEBUG(D_ERR|D_STREAM, "set alt 1 err %d", ret);
 334
 335         return ret;
 336 }
 337
 338 static void stv06xx_stopN(struct gspca_dev *gspca_dev)
 339 {
 340         int err;
 341         struct sd *sd = (struct sd *) gspca_dev;
 342
 343         /* stop ISO-streaming */
 344         err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
 345         if (err < 0)
 346                 goto out;
 347
 348         err = sd->sensor->stop(sd);
 349
 350 out:
 351         if (err < 0)
 352                 PDEBUG(D_STREAM, "Failed to stop stream");
 353         else
 354                 PDEBUG(D_STREAM, "Stopped streaming");
 355 }
 356
 357 /*
 358  * Analyse an USB packet of the data stream and store it appropriately.
 359  * Each packet contains an integral number of chunks. Each chunk has
 360  * 2-bytes identification, followed by 2-bytes that describe the chunk
 361  * length. Known/guessed chunk identifications are:
 362  * 8001/8005/C001/C005 - Begin new frame
 363  * 8002/8006/C002/C006 - End frame
 364  * 0200/4200           - Contains actual image data, bayer or compressed
 365  * 0005                - 11 bytes of unknown data
 366  * 0100                - 2 bytes of unknown data
 367  * The 0005 and 0100 chunks seem to appear only in compressed stream.
 368  */
 369 static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
 370                         u8 *data,                       /* isoc packet */
 371                         int len)                        /* iso packet length */
 372 {
 373         struct sd *sd = (struct sd *) gspca_dev;
 374
 375         PDEBUG(D_PACK, "Packet of length %d arrived", len);
 376
 377         /* A packet may contain several frames
 378            loop until the whole packet is reached */
 379         while (len) {
 380                 int id, chunk_len;
 381
 382                 if (len < 4) {
 383                         PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
 384                         return;
 385                 }
 386
 387                 /* Capture the id */
 388                 id = (data[0] << 8) | data[1];
 389
 390                 /* Capture the chunk length */
 391                 chunk_len = (data[2] << 8) | data[3];
 392                 PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
 393
 394                 data += 4;
 395                 len -= 4;
 396
 397                 if (len < chunk_len) {
 398                         PDEBUG(D_ERR, "URB packet length is smaller"
 399                                 " than the specified chunk length");
 400                         gspca_dev->last_packet_type = DISCARD_PACKET;
 401                         return;
 402                 }
 403
 404                 /* First byte seem to be 02=data 2nd byte is unknown??? */
 405                 if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
 406                         goto frame_data;
 407
 408                 switch (id) {
 409                 case 0x0200:
 410                 case 0x4200:
 411 frame_data:
 412                         PDEBUG(D_PACK, "Frame data packet detected");
 413
 414                         if (sd->to_skip) {
 415                                 int skip = (sd->to_skip < chunk_len) ?
 416                                             sd->to_skip : chunk_len;
 417                                 data += skip;
 418                                 len -= skip;
 419                                 chunk_len -= skip;
 420                                 sd->to_skip -= skip;
 421                         }
 422
 423                         gspca_frame_add(gspca_dev, INTER_PACKET,
 424                                         data, chunk_len);
 425                         break;
 426
 427                 case 0x8001:
 428                 case 0x8005:
 429                 case 0xc001:
 430                 case 0xc005:
 431                         PDEBUG(D_PACK, "Starting new frame");
 432
 433                         /* Create a new frame, chunk length should be zero */
 434                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 435                                         NULL, 0);
 436
 437                         if (sd->bridge == BRIDGE_ST6422)
 438                                 sd->to_skip = gspca_dev->width * 4;
 439
 440                         if (chunk_len)
 441                                 PDEBUG(D_ERR, "Chunk length is "
 442                                               "non-zero on a SOF");
 443                         break;
 444
 445                 case 0x8002:
 446                 case 0x8006:
 447                 case 0xc002:
 448                         PDEBUG(D_PACK, "End of frame detected");
 449
 450                         /* Complete the last frame (if any) */
 451                         gspca_frame_add(gspca_dev, LAST_PACKET,
 452                                         NULL, 0);
 453
 454                         if (chunk_len)
 455                                 PDEBUG(D_ERR, "Chunk length is "
 456                                               "non-zero on a EOF");
 457                         break;
 458
 459                 case 0x0005:
 460                         PDEBUG(D_PACK, "Chunk 0x005 detected");
 461                         /* Unknown chunk with 11 bytes of data,
 462                            occurs just before end of each frame
 463                            in compressed mode */
 464                         break;
 465
 466                 case 0x0100:
 467                         PDEBUG(D_PACK, "Chunk 0x0100 detected");
 468                         /* Unknown chunk with 2 bytes of data,
 469                            occurs 2-3 times per USB interrupt */
 470                         break;
 471                 case 0x42ff:
 472                         PDEBUG(D_PACK, "Chunk 0x42ff detected");
 473                         /* Special chunk seen sometimes on the ST6422 */
 474                         break;
 475                 default:
 476                         PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
 477                         /* Unknown chunk */
 478                 }
 479                 data    += chunk_len;
 480                 len     -= chunk_len;
 481         }
 482 }
 483
 484 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
 485 static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
 486                         u8 *data,               /* interrupt packet data */
 487                         int len)                /* interrupt packet length */
 488 {
 489         int ret = -EINVAL;
 490
 491         if (len == 1 && data[0] == 0x80) {
 492                 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
 493                 input_sync(gspca_dev->input_dev);
 494                 ret = 0;
 495         }
 496
 497         if (len == 1 && data[0] == 0x88) {
 498                 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
 499                 input_sync(gspca_dev->input_dev);
 500                 ret = 0;
 501         }
 502
 503         return ret;
 504 }
 505 #endif
 506
 507 static int stv06xx_config(struct gspca_dev *gspca_dev,
 508                           const struct usb_device_id *id);
 509
 510 /* sub-driver description */
 511 static const struct sd_desc sd_desc = {
 512         .name = MODULE_NAME,
 513         .config = stv06xx_config,
 514         .init = stv06xx_init,
 515         .start = stv06xx_start,
 516         .stopN = stv06xx_stopN,
 517         .pkt_scan = stv06xx_pkt_scan,
 518         .isoc_init = stv06xx_isoc_init,
 519         .isoc_nego = stv06xx_isoc_nego,
 520 #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
 521         .int_pkt_scan = sd_int_pkt_scan,
 522 #endif
 523 };
 524
 525 /* This function is called at probe time */
 526 static int stv06xx_config(struct gspca_dev *gspca_dev,
 527                           const struct usb_device_id *id)
 528 {
 529         struct sd *sd = (struct sd *) gspca_dev;
 530
 531         PDEBUG(D_PROBE, "Configuring camera");
 532
 533         sd->desc = sd_desc;
 534         sd->bridge = id->driver_info;
 535         gspca_dev->sd_desc = &sd->desc;
 536
 537         if (dump_bridge)
 538                 stv06xx_dump_bridge(sd);
 539
 540         sd->sensor = &stv06xx_sensor_st6422;
 541         if (!sd->sensor->probe(sd))
 542                 return 0;
 543
 544         sd->sensor = &stv06xx_sensor_vv6410;
 545         if (!sd->sensor->probe(sd))
 546                 return 0;
 547
 548         sd->sensor = &stv06xx_sensor_hdcs1x00;
 549         if (!sd->sensor->probe(sd))
 550                 return 0;
 551
 552         sd->sensor = &stv06xx_sensor_hdcs1020;
 553         if (!sd->sensor->probe(sd))
 554                 return 0;
 555
 556         sd->sensor = &stv06xx_sensor_pb0100;
 557         if (!sd->sensor->probe(sd))
 558                 return 0;
 559
 560         sd->sensor = NULL;
 561         return -ENODEV;
 562 }
 563
 564
 565
 566 /* -- module initialisation -- */
 567 static const struct usb_device_id device_table[] = {
 568         /* QuickCam Express */
 569         {USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },
 570         /* LEGO cam / QuickCam Web */
 571         {USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },
 572         /* Dexxa WebCam USB */
 573         {USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },
 574         /* QuickCam Messenger */
 575         {USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },
 576         /* QuickCam Communicate */
 577         {USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },
 578         /* QuickCam Messenger (new) */
 579         {USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },
 580         {}
 581 };
 582 MODULE_DEVICE_TABLE(usb, device_table);
 583
 584 /* -- device connect -- */
 585 static int sd_probe(struct usb_interface *intf,
 586                         const struct usb_device_id *id)
 587 {
 588         PDEBUG(D_PROBE, "Probing for a stv06xx device");
 589         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 590                                THIS_MODULE);
 591 }
 592
 593 static void sd_disconnect(struct usb_interface *intf)
 594 {
 595         struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
 596         struct sd *sd = (struct sd *) gspca_dev;
 597         PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
 598
 599         if (sd->sensor->disconnect)
 600                 sd->sensor->disconnect(sd);
 601         gspca_disconnect(intf);
 602 }
 603
 604 static struct usb_driver sd_driver = {
 605         .name = MODULE_NAME,
 606         .id_table = device_table,
 607         .probe = sd_probe,
 608         .disconnect = sd_disconnect,
 609 #ifdef CONFIG_PM
 610         .suspend = gspca_suspend,
 611         .resume = gspca_resume,
 612 #endif
 613 };
 614
 615 /* -- module insert / remove -- */
 616 static int __init sd_mod_init(void)
 617 {
 618         return usb_register(&sd_driver);
 619 }
 620 static void __exit sd_mod_exit(void)
 621 {
 622         usb_deregister(&sd_driver);
 623 }
 624
 625 module_init(sd_mod_init);
 626 module_exit(sd_mod_exit);
 627
 628 module_param(dump_bridge, bool, S_IRUGO | S_IWUSR);
 629 MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
 630
 631 module_param(dump_sensor, bool, S_IRUGO | S_IWUSR);
 632 MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");