kernel/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  * 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 bool dump_bridge;
  40 static bool dump_sensor;
  41
  42 int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
  43 {
  44         int err;
  45         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
  46         struct usb_device *udev = sd->gspca_dev.dev;
  47         __u8 *buf = sd->gspca_dev.usb_buf;
  48
  49         u8 len = (i2c_data > 0xff) ? 2 : 1;
  50
  51         buf[0] = i2c_data & 0xff;
  52         buf[1] = (i2c_data >> 8) & 0xff;
  53
  54         err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  55                               0x04, 0x40, address, 0, buf, len,
  56                               STV06XX_URB_MSG_TIMEOUT);
  57
  58         PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
  59                i2c_data, address, err);
  60
  61         return (err < 0) ? err : 0;
  62 }
  63
  64 int stv06xx_read_bridge(struct sd *sd, u16 address, u8 *i2c_data)
  65 {
  66         int err;
  67         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
  68         struct usb_device *udev = sd->gspca_dev.dev;
  69         __u8 *buf = sd->gspca_dev.usb_buf;
  70
  71         err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  72                               0x04, 0xc0, address, 0, buf, 1,
  73                               STV06XX_URB_MSG_TIMEOUT);
  74
  75         *i2c_data = buf[0];
  76
  77         PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
  78                *i2c_data, address, err);
  79
  80         return (err < 0) ? err : 0;
  81 }
  82
  83 /* Wraps the normal write sensor bytes / words functions for writing a
  84    single value */
  85 int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
  86 {
  87         if (sd->sensor->i2c_len == 2) {
  88                 u16 data[2] = { address, value };
  89                 return stv06xx_write_sensor_words(sd, data, 1);
  90         } else {
  91                 u8 data[2] = { address, value };
  92                 return stv06xx_write_sensor_bytes(sd, data, 1);
  93         }
  94 }
  95
  96 static int stv06xx_write_sensor_finish(struct sd *sd)
  97 {
  98         int err = 0;
  99
 100         if (sd->bridge == BRIDGE_STV610) {
 101                 struct usb_device *udev = sd->gspca_dev.dev;
 102                 __u8 *buf = sd->gspca_dev.usb_buf;
 103
 104                 buf[0] = 0;
 105                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 106                                       0x04, 0x40, 0x1704, 0, buf, 1,
 107                                       STV06XX_URB_MSG_TIMEOUT);
 108         }
 109
 110         return (err < 0) ? err : 0;
 111 }
 112
 113 int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len)
 114 {
 115         int err, i, j;
 116         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 117         struct usb_device *udev = sd->gspca_dev.dev;
 118         __u8 *buf = sd->gspca_dev.usb_buf;
 119
 120         PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
 121         for (i = 0; i < len;) {
 122                 /* Build the command buffer */
 123                 memset(buf, 0, I2C_BUFFER_LENGTH);
 124                 for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) {
 125                         buf[j] = data[2*i];
 126                         buf[0x10 + j] = data[2*i+1];
 127                         PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x",
 128                         data[2*i+1], data[2*i]);
 129                 }
 130                 buf[0x20] = sd->sensor->i2c_addr;
 131                 buf[0x21] = j - 1; /* Number of commands to send - 1 */
 132                 buf[0x22] = I2C_WRITE_CMD;
 133                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 134                                       0x04, 0x40, 0x0400, 0, buf,
 135                                       I2C_BUFFER_LENGTH,
 136                                       STV06XX_URB_MSG_TIMEOUT);
 137                 if (err < 0)
 138                         return err;
 139         }
 140         return stv06xx_write_sensor_finish(sd);
 141 }
 142
 143 int stv06xx_write_sensor_words(struct sd *sd, const u16 *data, u8 len)
 144 {
 145         int err, i, j;
 146         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 147         struct usb_device *udev = sd->gspca_dev.dev;
 148         __u8 *buf = sd->gspca_dev.usb_buf;
 149
 150         PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
 151
 152         for (i = 0; i < len;) {
 153                 /* Build the command buffer */
 154                 memset(buf, 0, I2C_BUFFER_LENGTH);
 155                 for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
 156                         buf[j] = data[2*i];
 157                         buf[0x10 + j * 2] = data[2*i+1];
 158                         buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
 159                         PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
 160                                 data[2*i+1], data[2*i]);
 161                 }
 162                 buf[0x20] = sd->sensor->i2c_addr;
 163                 buf[0x21] = j - 1; /* Number of commands to send - 1 */
 164                 buf[0x22] = I2C_WRITE_CMD;
 165                 err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 166                                 0x04, 0x40, 0x0400, 0, buf,
 167                                 I2C_BUFFER_LENGTH,
 168                                 STV06XX_URB_MSG_TIMEOUT);
 169                 if (err < 0)
 170                         return err;
 171         }
 172         return stv06xx_write_sensor_finish(sd);
 173 }
 174
 175 int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value)
 176 {
 177         int err;
 178         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 179         struct usb_device *udev = sd->gspca_dev.dev;
 180         __u8 *buf = sd->gspca_dev.usb_buf;
 181
 182         err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
 183         if (err < 0)
 184                 return err;
 185
 186         /* Clear mem */
 187         memset(buf, 0, I2C_BUFFER_LENGTH);
 188
 189         buf[0] = address;
 190         buf[0x20] = sd->sensor->i2c_addr;
 191         buf[0x21] = 0;
 192
 193         /* Read I2C register */
 194         buf[0x22] = I2C_READ_CMD;
 195
 196         err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 197                               0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
 198                               STV06XX_URB_MSG_TIMEOUT);
 199         if (err < 0) {
 200                 pr_err("I2C: Read error writing address: %d\n", err);
 201                 return err;
 202         }
 203
 204         err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 205                               0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
 206                               STV06XX_URB_MSG_TIMEOUT);
 207         if (sd->sensor->i2c_len == 2)
 208                 *value = buf[0] | (buf[1] << 8);
 209         else
 210                 *value = buf[0];
 211
 212         PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
 213                *value, address, err);
 214
 215         return (err < 0) ? err : 0;
 216 }
 217
 218 /* Dumps all bridge registers */
 219 static void stv06xx_dump_bridge(struct sd *sd)
 220 {
 221         int i;
 222         u8 data, buf;
 223
 224         pr_info("Dumping all stv06xx bridge registers\n");
 225         for (i = 0x1400; i < 0x160f; i++) {
 226                 stv06xx_read_bridge(sd, i, &data);
 227
 228                 pr_info("Read 0x%x from address 0x%x\n", data, i);
 229         }
 230
 231         pr_info("Testing stv06xx bridge registers for writability\n");
 232         for (i = 0x1400; i < 0x160f; i++) {
 233                 stv06xx_read_bridge(sd, i, &data);
 234                 buf = data;
 235
 236                 stv06xx_write_bridge(sd, i, 0xff);
 237                 stv06xx_read_bridge(sd, i, &data);
 238                 if (data == 0xff)
 239                         pr_info("Register 0x%x is read/write\n", i);
 240                 else if (data != buf)
 241                         pr_info("Register 0x%x is read/write, but only partially\n",
 242                                 i);
 243                 else
 244                         pr_info("Register 0x%x is read-only\n", i);
 245
 246                 stv06xx_write_bridge(sd, i, buf);
 247         }
 248 }
 249
 250 /* this function is called at probe and resume time */
 251 static int stv06xx_init(struct gspca_dev *gspca_dev)
 252 {
 253         struct sd *sd = (struct sd *) gspca_dev;
 254         int err;
 255
 256         PDEBUG(D_PROBE, "Initializing camera");
 257
 258         /* Let the usb init settle for a bit
 259            before performing the initialization */
 260         msleep(250);
 261
 262         err = sd->sensor->init(sd);
 263
 264         if (dump_sensor && sd->sensor->dump)
 265                 sd->sensor->dump(sd);
 266
 267         return (err < 0) ? err : 0;
 268 }
 269
 270 /* this function is called at probe time */
 271 static int stv06xx_init_controls(struct gspca_dev *gspca_dev)
 272 {
 273         struct sd *sd = (struct sd *) gspca_dev;
 274
 275         PDEBUG(D_PROBE, "Initializing controls");
 276
 277         gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler;
 278         return sd->sensor->init_controls(sd);
 279 }
 280
 281 /* Start the camera */
 282 static int stv06xx_start(struct gspca_dev *gspca_dev)
 283 {
 284         struct sd *sd = (struct sd *) gspca_dev;
 285         struct usb_host_interface *alt;
 286         struct usb_interface *intf;
 287         int err, packet_size;
 288
 289         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
 290         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
 291         if (!alt) {
 292                 PERR("Couldn't get altsetting");
 293                 return -EIO;
 294         }
 295
 296         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 297         err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
 298         if (err < 0)
 299                 return err;
 300
 301         /* Prepare the sensor for start */
 302         err = sd->sensor->start(sd);
 303         if (err < 0)
 304                 goto out;
 305
 306         /* Start isochronous streaming */
 307         err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
 308
 309 out:
 310         if (err < 0)
 311                 PDEBUG(D_STREAM, "Starting stream failed");
 312         else
 313                 PDEBUG(D_STREAM, "Started streaming");
 314
 315         return (err < 0) ? err : 0;
 316 }
 317
 318 static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
 319 {
 320         struct usb_host_interface *alt;
 321         struct sd *sd = (struct sd *) gspca_dev;
 322
 323         /* Start isoc bandwidth "negotiation" at max isoc bandwidth */
 324         alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
 325         alt->endpoint[0].desc.wMaxPacketSize =
 326                 cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);
 327
 328         return 0;
 329 }
 330
 331 static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
 332 {
 333         int ret, packet_size, min_packet_size;
 334         struct usb_host_interface *alt;
 335         struct sd *sd = (struct sd *) gspca_dev;
 336
 337         alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
 338         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 339         min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
 340         if (packet_size <= min_packet_size)
 341                 return -EIO;
 342
 343         packet_size -= 100;
 344         if (packet_size < min_packet_size)
 345                 packet_size = min_packet_size;
 346         alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);
 347
 348         ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
 349         if (ret < 0)
 350                 PERR("set alt 1 err %d", ret);
 351
 352         return ret;
 353 }
 354
 355 static void stv06xx_stopN(struct gspca_dev *gspca_dev)
 356 {
 357         int err;
 358         struct sd *sd = (struct sd *) gspca_dev;
 359
 360         /* stop ISO-streaming */
 361         err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
 362         if (err < 0)
 363                 goto out;
 364
 365         err = sd->sensor->stop(sd);
 366
 367 out:
 368         if (err < 0)
 369                 PDEBUG(D_STREAM, "Failed to stop stream");
 370         else
 371                 PDEBUG(D_STREAM, "Stopped streaming");
 372 }
 373
 374 /*
 375  * Analyse an USB packet of the data stream and store it appropriately.
 376  * Each packet contains an integral number of chunks. Each chunk has
 377  * 2-bytes identification, followed by 2-bytes that describe the chunk
 378  * length. Known/guessed chunk identifications are:
 379  * 8001/8005/C001/C005 - Begin new frame
 380  * 8002/8006/C002/C006 - End frame
 381  * 0200/4200           - Contains actual image data, bayer or compressed
 382  * 0005                - 11 bytes of unknown data
 383  * 0100                - 2 bytes of unknown data
 384  * The 0005 and 0100 chunks seem to appear only in compressed stream.
 385  */
 386 static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
 387                         u8 *data,                       /* isoc packet */
 388                         int len)                        /* iso packet length */
 389 {
 390         struct sd *sd = (struct sd *) gspca_dev;
 391
 392         PDEBUG(D_PACK, "Packet of length %d arrived", len);
 393
 394         /* A packet may contain several frames
 395            loop until the whole packet is reached */
 396         while (len) {
 397                 int id, chunk_len;
 398
 399                 if (len < 4) {
 400                         PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
 401                         return;
 402                 }
 403
 404                 /* Capture the id */
 405                 id = (data[0] << 8) | data[1];
 406
 407                 /* Capture the chunk length */
 408                 chunk_len = (data[2] << 8) | data[3];
 409                 PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
 410
 411                 data += 4;
 412                 len -= 4;
 413
 414                 if (len < chunk_len) {
 415                         PERR("URB packet length is smaller"
 416                                 " than the specified chunk length");
 417                         gspca_dev->last_packet_type = DISCARD_PACKET;
 418                         return;
 419                 }
 420
 421                 /* First byte seem to be 02=data 2nd byte is unknown??? */
 422                 if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
 423                         goto frame_data;
 424
 425                 switch (id) {
 426                 case 0x0200:
 427                 case 0x4200:
 428 frame_data:
 429                         PDEBUG(D_PACK, "Frame data packet detected");
 430
 431                         if (sd->to_skip) {
 432                                 int skip = (sd->to_skip < chunk_len) ?
 433                                             sd->to_skip : chunk_len;
 434                                 data += skip;
 435                                 len -= skip;
 436                                 chunk_len -= skip;
 437                                 sd->to_skip -= skip;
 438                         }
 439
 440                         gspca_frame_add(gspca_dev, INTER_PACKET,
 441                                         data, chunk_len);
 442                         break;
 443
 444                 case 0x8001:
 445                 case 0x8005:
 446                 case 0xc001:
 447                 case 0xc005:
 448                         PDEBUG(D_PACK, "Starting new frame");
 449
 450                         /* Create a new frame, chunk length should be zero */
 451                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 452                                         NULL, 0);
 453
 454                         if (sd->bridge == BRIDGE_ST6422)
 455                                 sd->to_skip = gspca_dev->pixfmt.width * 4;
 456
 457                         if (chunk_len)
 458                                 PERR("Chunk length is "
 459                                               "non-zero on a SOF");
 460                         break;
 461
 462                 case 0x8002:
 463                 case 0x8006:
 464                 case 0xc002:
 465                         PDEBUG(D_PACK, "End of frame detected");
 466
 467                         /* Complete the last frame (if any) */
 468                         gspca_frame_add(gspca_dev, LAST_PACKET,
 469                                         NULL, 0);
 470
 471                         if (chunk_len)
 472                                 PERR("Chunk length is "
 473                                               "non-zero on a EOF");
 474                         break;
 475
 476                 case 0x0005:
 477                         PDEBUG(D_PACK, "Chunk 0x005 detected");
 478                         /* Unknown chunk with 11 bytes of data,
 479                            occurs just before end of each frame
 480                            in compressed mode */
 481                         break;
 482
 483                 case 0x0100:
 484                         PDEBUG(D_PACK, "Chunk 0x0100 detected");
 485                         /* Unknown chunk with 2 bytes of data,
 486                            occurs 2-3 times per USB interrupt */
 487                         break;
 488                 case 0x42ff:
 489                         PDEBUG(D_PACK, "Chunk 0x42ff detected");
 490                         /* Special chunk seen sometimes on the ST6422 */
 491                         break;
 492                 default:
 493                         PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
 494                         /* Unknown chunk */
 495                 }
 496                 data    += chunk_len;
 497                 len     -= chunk_len;
 498         }
 499 }
 500
 501 #if IS_ENABLED(CONFIG_INPUT)
 502 static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
 503                         u8 *data,               /* interrupt packet data */
 504                         int len)                /* interrupt packet length */
 505 {
 506         int ret = -EINVAL;
 507
 508         if (len == 1 && (data[0] == 0x80 || data[0] == 0x10)) {
 509                 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
 510                 input_sync(gspca_dev->input_dev);
 511                 ret = 0;
 512         }
 513
 514         if (len == 1 && (data[0] == 0x88 || data[0] == 0x11)) {
 515                 input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
 516                 input_sync(gspca_dev->input_dev);
 517                 ret = 0;
 518         }
 519
 520         return ret;
 521 }
 522 #endif
 523
 524 static int stv06xx_config(struct gspca_dev *gspca_dev,
 525                           const struct usb_device_id *id);
 526
 527 /* sub-driver description */
 528 static const struct sd_desc sd_desc = {
 529         .name = MODULE_NAME,
 530         .config = stv06xx_config,
 531         .init = stv06xx_init,
 532         .init_controls = stv06xx_init_controls,
 533         .start = stv06xx_start,
 534         .stopN = stv06xx_stopN,
 535         .pkt_scan = stv06xx_pkt_scan,
 536         .isoc_init = stv06xx_isoc_init,
 537         .isoc_nego = stv06xx_isoc_nego,
 538 #if IS_ENABLED(CONFIG_INPUT)
 539         .int_pkt_scan = sd_int_pkt_scan,
 540 #endif
 541 };
 542
 543 /* This function is called at probe time */
 544 static int stv06xx_config(struct gspca_dev *gspca_dev,
 545                           const struct usb_device_id *id)
 546 {
 547         struct sd *sd = (struct sd *) gspca_dev;
 548
 549         PDEBUG(D_PROBE, "Configuring camera");
 550
 551         sd->bridge = id->driver_info;
 552         gspca_dev->sd_desc = &sd_desc;
 553
 554         if (dump_bridge)
 555                 stv06xx_dump_bridge(sd);
 556
 557         sd->sensor = &stv06xx_sensor_st6422;
 558         if (!sd->sensor->probe(sd))
 559                 return 0;
 560
 561         sd->sensor = &stv06xx_sensor_vv6410;
 562         if (!sd->sensor->probe(sd))
 563                 return 0;
 564
 565         sd->sensor = &stv06xx_sensor_hdcs1x00;
 566         if (!sd->sensor->probe(sd))
 567                 return 0;
 568
 569         sd->sensor = &stv06xx_sensor_hdcs1020;
 570         if (!sd->sensor->probe(sd))
 571                 return 0;
 572
 573         sd->sensor = &stv06xx_sensor_pb0100;
 574         if (!sd->sensor->probe(sd))
 575                 return 0;
 576
 577         sd->sensor = NULL;
 578         return -ENODEV;
 579 }
 580
 581
 582
 583 /* -- module initialisation -- */
 584 static const struct usb_device_id device_table[] = {
 585         /* QuickCam Express */
 586         {USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },
 587         /* LEGO cam / QuickCam Web */
 588         {USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },
 589         /* Dexxa WebCam USB */
 590         {USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },
 591         /* QuickCam Messenger */
 592         {USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },
 593         /* QuickCam Communicate */
 594         {USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },
 595         /* QuickCam Messenger (new) */
 596         {USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },
 597         {}
 598 };
 599 MODULE_DEVICE_TABLE(usb, device_table);
 600
 601 /* -- device connect -- */
 602 static int sd_probe(struct usb_interface *intf,
 603                         const struct usb_device_id *id)
 604 {
 605         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 606                                THIS_MODULE);
 607 }
 608
 609 static void sd_disconnect(struct usb_interface *intf)
 610 {
 611         struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
 612         struct sd *sd = (struct sd *) gspca_dev;
 613         void *priv = sd->sensor_priv;
 614         PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
 615
 616         sd->sensor = NULL;
 617         gspca_disconnect(intf);
 618         kfree(priv);
 619 }
 620
 621 static struct usb_driver sd_driver = {
 622         .name = MODULE_NAME,
 623         .id_table = device_table,
 624         .probe = sd_probe,
 625         .disconnect = sd_disconnect,
 626 #ifdef CONFIG_PM
 627         .suspend = gspca_suspend,
 628         .resume = gspca_resume,
 629         .reset_resume = gspca_resume,
 630 #endif
 631 };
 632
 633 module_usb_driver(sd_driver);
 634
 635 module_param(dump_bridge, bool, S_IRUGO | S_IWUSR);
 636 MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
 637
 638 module_param(dump_sensor, bool, S_IRUGO | S_IWUSR);
 639 MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");