drivers/media/usb/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  * P/N 861037:      Sensor HDCS1000        ASIC STV0600
  18  * P/N 861050-0010: Sensor HDCS1000        ASIC STV0600
  19  * P/N 861050-0020: Sensor Photobit PB100  ASIC STV0600-1 - QuickCam Express
  20  * P/N 861055:      Sensor ST VV6410       ASIC STV0610   - LEGO cam
  21  * P/N 861075-0040: Sensor HDCS1000        ASIC
  22  * P/N 961179-0700: Sensor ST VV6410       ASIC STV0602   - Dexxa WebCam USB
  23  * P/N 861040-0000: Sensor ST VV6410       ASIC STV0610   - QuickCam Web
  24  */
  25
  26 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  27
  28 #include <linux/input.h>
  29 #include "stv06xx_sensor.h"
  30
  31 MODULE_AUTHOR("Erik Andrén");
  32 MODULE_DESCRIPTION("STV06XX USB Camera Driver");
  33 MODULE_LICENSE("GPL");
  34
  35 static bool dump_bridge;
  36 static bool dump_sensor;
  37
  38 int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
  39 {
  40         int err;
  41         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
  42         struct usb_device *udev = sd->gspca_dev.dev;
  43         __u8 *buf = sd->gspca_dev.usb_buf;
  44
  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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
  64         struct usb_device *udev = sd->gspca_dev.dev;
  65         __u8 *buf = sd->gspca_dev.usb_buf;
  66
  67         err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  68                               0x04, 0xc0, address, 0, buf, 1,
  69                               STV06XX_URB_MSG_TIMEOUT);
  70
  71         *i2c_data = buf[0];
  72
  73         PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
  74                *i2c_data, address, err);
  75
  76         return (err < 0) ? err : 0;
  77 }
  78
  79 /* Wraps the normal write sensor bytes / words functions for writing a
  80    single value */
  81 int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
  82 {
  83         if (sd->sensor->i2c_len == 2) {
  84                 u16 data[2] = { address, value };
  85                 return stv06xx_write_sensor_words(sd, data, 1);
  86         } else {
  87                 u8 data[2] = { address, value };
  88                 return stv06xx_write_sensor_bytes(sd, data, 1);
  89         }
  90 }
  91
  92 static int stv06xx_write_sensor_finish(struct sd *sd)
  93 {
  94         int err = 0;
  95
  96         if (sd->bridge == BRIDGE_STV610) {
  97                 struct usb_device *udev = sd->gspca_dev.dev;
  98                 __u8 *buf = sd->gspca_dev.usb_buf;
  99
 100                 buf[0] = 0;
 101                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 102                                       0x04, 0x40, 0x1704, 0, buf, 1,
 103                                       STV06XX_URB_MSG_TIMEOUT);
 104         }
 105
 106         return (err < 0) ? err : 0;
 107 }
 108
 109 int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len)
 110 {
 111         int err, i, j;
 112         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 143         struct usb_device *udev = sd->gspca_dev.dev;
 144         __u8 *buf = sd->gspca_dev.usb_buf;
 145
 146         PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
 147
 148         for (i = 0; i < len;) {
 149                 /* Build the command buffer */
 150                 memset(buf, 0, I2C_BUFFER_LENGTH);
 151                 for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
 152                         buf[j] = data[2*i];
 153                         buf[0x10 + j * 2] = data[2*i+1];
 154                         buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
 155                         PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
 156                                 data[2*i+1], data[2*i]);
 157                 }
 158                 buf[0x20] = sd->sensor->i2c_addr;
 159                 buf[0x21] = j - 1; /* Number of commands to send - 1 */
 160                 buf[0x22] = I2C_WRITE_CMD;
 161                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 162                                 0x04, 0x40, 0x0400, 0, buf,
 163                                 I2C_BUFFER_LENGTH,
 164                                 STV06XX_URB_MSG_TIMEOUT);
 165                 if (err < 0)
 166                         return err;
 167         }
 168         return stv06xx_write_sensor_finish(sd);
 169 }
 170
 171 int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value)
 172 {
 173         int err;
 174         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 175         struct usb_device *udev = sd->gspca_dev.dev;
 176         __u8 *buf = sd->gspca_dev.usb_buf;
 177
 178         err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
 179         if (err < 0)
 180                 return err;
 181
 182         /* Clear mem */
 183         memset(buf, 0, I2C_BUFFER_LENGTH);
 184
 185         buf[0] = address;
 186         buf[0x20] = sd->sensor->i2c_addr;
 187         buf[0x21] = 0;
 188
 189         /* Read I2C register */
 190         buf[0x22] = I2C_READ_CMD;
 191
 192         err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 193                               0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
 194                               STV06XX_URB_MSG_TIMEOUT);
 195         if (err < 0) {
 196                 pr_err("I2C: Read error writing address: %d\n", err);
 197                 return err;
 198         }
 199
 200         err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 201                               0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
 202                               STV06XX_URB_MSG_TIMEOUT);
 203         if (sd->sensor->i2c_len == 2)
 204                 *value = buf[0] | (buf[1] << 8);
 205         else
 206                 *value = buf[0];
 207
 208         PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
 209                *value, address, err);
 210
 211         return (err < 0) ? err : 0;
 212 }
 213
 214 /* Dumps all bridge registers */
 215 static void stv06xx_dump_bridge(struct sd *sd)
 216 {
 217         int i;
 218         u8 data, buf;
 219
 220         pr_info("Dumping all stv06xx bridge registers\n");
 221         for (i = 0x1400; i < 0x160f; i++) {
 222                 stv06xx_read_bridge(sd, i, &data);
 223
 224                 pr_info("Read 0x%x from address 0x%x\n", data, i);
 225         }
 226
 227         pr_info("Testing stv06xx bridge registers for writability\n");
 228         for (i = 0x1400; i < 0x160f; i++) {
 229                 stv06xx_read_bridge(sd, i, &data);
 230                 buf = data;
 231
 232                 stv06xx_write_bridge(sd, i, 0xff);
 233                 stv06xx_read_bridge(sd, i, &data);
 234                 if (data == 0xff)
 235                         pr_info("Register 0x%x is read/write\n", i);
 236                 else if (data != buf)
 237                         pr_info("Register 0x%x is read/write, but only partially\n",
 238                                 i);
 239                 else
 240                         pr_info("Register 0x%x is read-only\n", i);
 241
 242                 stv06xx_write_bridge(sd, i, buf);
 243         }
 244 }
 245
 246 /* this function is called at probe and resume time */
 247 static int stv06xx_init(struct gspca_dev *gspca_dev)
 248 {
 249         struct sd *sd = (struct sd *) gspca_dev;
 250         int err;
 251
 252         PDEBUG(D_PROBE, "Initializing camera");
 253
 254         /* Let the usb init settle for a bit
 255            before performing the initialization */
 256         msleep(250);
 257
 258         err = sd->sensor->init(sd);
 259
 260         if (dump_sensor && sd->sensor->dump)
 261                 sd->sensor->dump(sd);
 262
 263         return (err < 0) ? err : 0;
 264 }
 265
 266 /* this function is called at probe time */
 267 static int stv06xx_init_controls(struct gspca_dev *gspca_dev)
 268 {
 269         struct sd *sd = (struct sd *) gspca_dev;
 270
 271         PDEBUG(D_PROBE, "Initializing controls");
 272
 273         gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler;
 274         return sd->sensor->init_controls(sd);
 275 }
 276
 277 /* Start the camera */
 278 static int stv06xx_start(struct gspca_dev *gspca_dev)
 279 {
 280         struct sd *sd = (struct sd *) gspca_dev;
 281         struct usb_host_interface *alt;
 282         struct usb_interface *intf;
 283         int err, packet_size;
 284
 285         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
 286         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
 287         if (!alt) {
 288                 PERR("Couldn't get altsetting");
 289                 return -EIO;
 290         }
 291
 292         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 293         err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
 294         if (err < 0)
 295                 return err;
 296
 297         /* Prepare the sensor for start */
 298         err = sd->sensor->start(sd);
 299         if (err < 0)
 300                 goto out;
 301
 302         /* Start isochronous streaming */
 303         err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
 304
 305 out:
 306         if (err < 0)
 307                 PDEBUG(D_STREAM, "Starting stream failed");
 308         else
 309                 PDEBUG(D_STREAM, "Started streaming");
 310
 311         return (err < 0) ? err : 0;
 312 }
 313
 314 static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
 315 {
 316         struct usb_host_interface *alt;
 317         struct sd *sd = (struct sd *) gspca_dev;
 318
 319         /* Start isoc bandwidth "negotiation" at max isoc bandwidth */
 320         alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
 321         alt->endpoint[0].desc.wMaxPacketSize =
 322                 cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);
 323
 324         return 0;
 325 }
 326
 327 static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
 328 {
 329         int ret, packet_size, min_packet_size;
 330         struct usb_host_interface *alt;
 331         struct sd *sd = (struct sd *) gspca_dev;
 332
 333         alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
 334         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 335         min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
 336         if (packet_size <= min_packet_size)
 337                 return -EIO;
 338
 339         packet_size -= 100;
 340         if (packet_size < min_packet_size)
 341                 packet_size = min_packet_size;
 342         alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);
 343
 344         ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 345         if (ret < 0)
 346                 PERR("set alt 1 err %d", ret);
 347
 348         return ret;
 349 }
 350
 351 static void stv06xx_stopN(struct gspca_dev *gspca_dev)
 352 {
 353         int err;
 354         struct sd *sd = (struct sd *) gspca_dev;
 355
 356         /* stop ISO-streaming */
 357         err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
 358         if (err < 0)
 359                 goto out;
 360
 361         err = sd->sensor->stop(sd);
 362
 363 out:
 364         if (err < 0)
 365                 PDEBUG(D_STREAM, "Failed to stop stream");
 366         else
 367                 PDEBUG(D_STREAM, "Stopped streaming");
 368 }
 369
 370 /*
 371  * Analyse an USB packet of the data stream and store it appropriately.
 372  * Each packet contains an integral number of chunks. Each chunk has
 373  * 2-bytes identification, followed by 2-bytes that describe the chunk
 374  * length. Known/guessed chunk identifications are:
 375  * 8001/8005/C001/C005 - Begin new frame
 376  * 8002/8006/C002/C006 - End frame
 377  * 0200/4200           - Contains actual image data, bayer or compressed
 378  * 0005                - 11 bytes of unknown data
 379  * 0100                - 2 bytes of unknown data
 380  * The 0005 and 0100 chunks seem to appear only in compressed stream.
 381  */
 382 static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
 383                         u8 *data,                       /* isoc packet */
 384                         int len)                        /* iso packet length */
 385 {
 386         struct sd *sd = (struct sd *) gspca_dev;
 387
 388         PDEBUG(D_PACK, "Packet of length %d arrived", len);
 389
 390         /* A packet may contain several frames
 391            loop until the whole packet is reached */
 392         while (len) {
 393                 int id, chunk_len;
 394
 395                 if (len < 4) {
 396                         PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
 397                         return;
 398                 }
 399
 400                 /* Capture the id */
 401                 id = (data[0] << 8) | data[1];
 402
 403                 /* Capture the chunk length */
 404                 chunk_len = (data[2] << 8) | data[3];
 405                 PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
 406
 407                 data += 4;
 408                 len -= 4;
 409
 410                 if (len < chunk_len) {
 411                         PERR("URB packet length is smaller than the specified chunk length");
 412                         gspca_dev->last_packet_type = DISCARD_PACKET;
 413                         return;
 414                 }
 415
 416                 /* First byte seem to be 02=data 2nd byte is unknown??? */
 417                 if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
 418                         goto frame_data;
 419
 420                 switch (id) {
 421                 case 0x0200:
 422                 case 0x4200:
 423 frame_data:
 424                         PDEBUG(D_PACK, "Frame data packet detected");
 425
 426                         if (sd->to_skip) {
 427                                 int skip = (sd->to_skip < chunk_len) ?
 428                                             sd->to_skip : chunk_len;
 429                                 data += skip;
 430                                 len -= skip;
 431                                 chunk_len -= skip;
 432                                 sd->to_skip -= skip;
 433                         }
 434
 435                         gspca_frame_add(gspca_dev, INTER_PACKET,
 436                                         data, chunk_len);
 437                         break;
 438
 439                 case 0x8001:
 440                 case 0x8005:
 441                 case 0xc001:
 442                 case 0xc005:
 443                         PDEBUG(D_PACK, "Starting new frame");
 444
 445                         /* Create a new frame, chunk length should be zero */
 446                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 447                                         NULL, 0);
 448
 449                         if (sd->bridge == BRIDGE_ST6422)
 450                                 sd->to_skip = gspca_dev->pixfmt.width * 4;
 451
 452                         if (chunk_len)
 453                                 PERR("Chunk length is non-zero on a SOF");
 454                         break;
 455
 456                 case 0x8002:
 457                 case 0x8006:
 458                 case 0xc002:
 459                         PDEBUG(D_PACK, "End of frame detected");
 460
 461                         /* Complete the last frame (if any) */
 462                         gspca_frame_add(gspca_dev, LAST_PACKET,
 463                                         NULL, 0);
 464
 465                         if (chunk_len)
 466                                 PERR("Chunk length is non-zero on a EOF");
 467                         break;
 468
 469                 case 0x0005:
 470                         PDEBUG(D_PACK, "Chunk 0x005 detected");
 471                         /* Unknown chunk with 11 bytes of data,
 472                            occurs just before end of each frame
 473                            in compressed mode */
 474                         break;
 475
 476                 case 0x0100:
 477                         PDEBUG(D_PACK, "Chunk 0x0100 detected");
 478                         /* Unknown chunk with 2 bytes of data,
 479                            occurs 2-3 times per USB interrupt */
 480                         break;
 481                 case 0x42ff:
 482                         PDEBUG(D_PACK, "Chunk 0x42ff detected");
 483                         /* Special chunk seen sometimes on the ST6422 */
 484                         break;
 485                 default:
 486                         PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
 487                         /* Unknown chunk */
 488                 }
 489                 data    += chunk_len;
 490                 len     -= chunk_len;
 491         }
 492 }
 493
 494 #if IS_ENABLED(CONFIG_INPUT)
 495 static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
 496                         u8 *data,               /* interrupt packet data */
 497                         int len)                /* interrupt packet length */
 498 {
 499         int ret = -EINVAL;
 500
 501         if (len == 1 && (data[0] == 0x80 || data[0] == 0x10)) {
 502                 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
 503                 input_sync(gspca_dev->input_dev);
 504                 ret = 0;
 505         }
 506
 507         if (len == 1 && (data[0] == 0x88 || data[0] == 0x11)) {
 508                 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
 509                 input_sync(gspca_dev->input_dev);
 510                 ret = 0;
 511         }
 512
 513         return ret;
 514 }
 515 #endif
 516
 517 static int stv06xx_config(struct gspca_dev *gspca_dev,
 518                           const struct usb_device_id *id);
 519
 520 /* sub-driver description */
 521 static const struct sd_desc sd_desc = {
 522         .name = MODULE_NAME,
 523         .config = stv06xx_config,
 524         .init = stv06xx_init,
 525         .init_controls = stv06xx_init_controls,
 526         .start = stv06xx_start,
 527         .stopN = stv06xx_stopN,
 528         .pkt_scan = stv06xx_pkt_scan,
 529         .isoc_init = stv06xx_isoc_init,
 530         .isoc_nego = stv06xx_isoc_nego,
 531 #if IS_ENABLED(CONFIG_INPUT)
 532         .int_pkt_scan = sd_int_pkt_scan,
 533 #endif
 534 };
 535
 536 /* This function is called at probe time */
 537 static int stv06xx_config(struct gspca_dev *gspca_dev,
 538                           const struct usb_device_id *id)
 539 {
 540         struct sd *sd = (struct sd *) gspca_dev;
 541
 542         PDEBUG(D_PROBE, "Configuring camera");
 543
 544         sd->bridge = id->driver_info;
 545         gspca_dev->sd_desc = &sd_desc;
 546
 547         if (dump_bridge)
 548                 stv06xx_dump_bridge(sd);
 549
 550         sd->sensor = &stv06xx_sensor_st6422;
 551         if (!sd->sensor->probe(sd))
 552                 return 0;
 553
 554         sd->sensor = &stv06xx_sensor_vv6410;
 555         if (!sd->sensor->probe(sd))
 556                 return 0;
 557
 558         sd->sensor = &stv06xx_sensor_hdcs1x00;
 559         if (!sd->sensor->probe(sd))
 560                 return 0;
 561
 562         sd->sensor = &stv06xx_sensor_hdcs1020;
 563         if (!sd->sensor->probe(sd))
 564                 return 0;
 565
 566         sd->sensor = &stv06xx_sensor_pb0100;
 567         if (!sd->sensor->probe(sd))
 568                 return 0;
 569
 570         sd->sensor = NULL;
 571         return -ENODEV;
 572 }
 573
 574
 575
 576 /* -- module initialisation -- */
 577 static const struct usb_device_id device_table[] = {
 578         {USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },    /* QuickCam Express */
 579         {USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },    /* LEGO cam / QuickCam Web */
 580         {USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },    /* Dexxa WebCam USB */
 581         {USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },    /* QuickCam Messenger */
 582         {USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },    /* QuickCam Communicate */
 583         {USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },    /* QuickCam Messenger (new) */
 584         {}
 585 };
 586 MODULE_DEVICE_TABLE(usb, device_table);
 587
 588 /* -- device connect -- */
 589 static int sd_probe(struct usb_interface *intf,
 590                         const struct usb_device_id *id)
 591 {
 592         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 593                                THIS_MODULE);
 594 }
 595
 596 static void sd_disconnect(struct usb_interface *intf)
 597 {
 598         struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
 599         struct sd *sd = (struct sd *) gspca_dev;
 600         void *priv = sd->sensor_priv;
 601         PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
 602
 603         sd->sensor = NULL;
 604         gspca_disconnect(intf);
 605         kfree(priv);
 606 }
 607
 608 static struct usb_driver sd_driver = {
 609         .name = MODULE_NAME,
 610         .id_table = device_table,
 611         .probe = sd_probe,
 612         .disconnect = sd_disconnect,
 613 #ifdef CONFIG_PM
 614         .suspend = gspca_suspend,
 615         .resume = gspca_resume,
 616         .reset_resume = gspca_resume,
 617 #endif
 618 };
 619
 620 module_usb_driver(sd_driver);
 621
 622 module_param(dump_bridge, bool, S_IRUGO | S_IWUSR);
 623 MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
 624
 625 module_param(dump_sensor, bool, S_IRUGO | S_IWUSR);
 626 MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");