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