1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * uvc_driver.c -- USB Video Class driver 4 * 5 * Copyright (C) 2005-2010 6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com) 7 */ 8 9 #include <linux/atomic.h> 10 #include <linux/bits.h> 11 #include <linux/gpio/consumer.h> 12 #include <linux/kernel.h> 13 #include <linux/list.h> 14 #include <linux/module.h> 15 #include <linux/slab.h> 16 #include <linux/usb.h> 17 #include <linux/usb/quirks.h> 18 #include <linux/usb/uvc.h> 19 #include <linux/videodev2.h> 20 #include <linux/vmalloc.h> 21 #include <linux/wait.h> 22 #include <asm/unaligned.h> 23 24 #include <media/v4l2-common.h> 25 #include <media/v4l2-ioctl.h> 26 27 #include "uvcvideo.h" 28 29 #define DRIVER_AUTHOR "Laurent Pinchart " \ 30 "<laurent.pinchart@ideasonboard.com>" 31 #define DRIVER_DESC "USB Video Class driver" 32 33 unsigned int uvc_clock_param = CLOCK_MONOTONIC; 34 unsigned int uvc_hw_timestamps_param; 35 unsigned int uvc_no_drop_param; 36 static unsigned int uvc_quirks_param = -1; 37 unsigned int uvc_dbg_param; 38 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; 39 40 /* ------------------------------------------------------------------------ 41 * Utility functions 42 */ 43 44 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 45 u8 epaddr) 46 { 47 struct usb_host_endpoint *ep; 48 unsigned int i; 49 50 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 51 ep = &alts->endpoint[i]; 52 if (ep->desc.bEndpointAddress == epaddr) 53 return ep; 54 } 55 56 return NULL; 57 } 58 59 static enum v4l2_colorspace uvc_colorspace(const u8 primaries) 60 { 61 static const enum v4l2_colorspace colorprimaries[] = { 62 V4L2_COLORSPACE_SRGB, /* Unspecified */ 63 V4L2_COLORSPACE_SRGB, 64 V4L2_COLORSPACE_470_SYSTEM_M, 65 V4L2_COLORSPACE_470_SYSTEM_BG, 66 V4L2_COLORSPACE_SMPTE170M, 67 V4L2_COLORSPACE_SMPTE240M, 68 }; 69 70 if (primaries < ARRAY_SIZE(colorprimaries)) 71 return colorprimaries[primaries]; 72 73 return V4L2_COLORSPACE_SRGB; /* Reserved */ 74 } 75 76 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics) 77 { 78 /* 79 * V4L2 does not currently have definitions for all possible values of 80 * UVC transfer characteristics. If v4l2_xfer_func is extended with new 81 * values, the mapping below should be updated. 82 * 83 * Substitutions are taken from the mapping given for 84 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h. 85 */ 86 static const enum v4l2_xfer_func xfer_funcs[] = { 87 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */ 88 V4L2_XFER_FUNC_709, 89 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */ 90 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */ 91 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */ 92 V4L2_XFER_FUNC_SMPTE240M, 93 V4L2_XFER_FUNC_NONE, 94 V4L2_XFER_FUNC_SRGB, 95 }; 96 97 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs)) 98 return xfer_funcs[transfer_characteristics]; 99 100 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */ 101 } 102 103 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients) 104 { 105 /* 106 * V4L2 does not currently have definitions for all possible values of 107 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new 108 * values, the mapping below should be updated. 109 * 110 * Substitutions are taken from the mapping given for 111 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h. 112 * 113 * FCC is assumed to be close enough to 601. 114 */ 115 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = { 116 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */ 117 V4L2_YCBCR_ENC_709, 118 V4L2_YCBCR_ENC_601, /* Substitution for FCC */ 119 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */ 120 V4L2_YCBCR_ENC_601, 121 V4L2_YCBCR_ENC_SMPTE240M, 122 }; 123 124 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs)) 125 return ycbcr_encs[matrix_coefficients]; 126 127 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */ 128 } 129 130 /* ------------------------------------------------------------------------ 131 * Terminal and unit management 132 */ 133 134 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 135 { 136 struct uvc_entity *entity; 137 138 list_for_each_entry(entity, &dev->entities, list) { 139 if (entity->id == id) 140 return entity; 141 } 142 143 return NULL; 144 } 145 146 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 147 int id, struct uvc_entity *entity) 148 { 149 unsigned int i; 150 151 if (entity == NULL) 152 entity = list_entry(&dev->entities, struct uvc_entity, list); 153 154 list_for_each_entry_continue(entity, &dev->entities, list) { 155 for (i = 0; i < entity->bNrInPins; ++i) 156 if (entity->baSourceID[i] == id) 157 return entity; 158 } 159 160 return NULL; 161 } 162 163 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) 164 { 165 struct uvc_streaming *stream; 166 167 list_for_each_entry(stream, &dev->streams, list) { 168 if (stream->header.bTerminalLink == id) 169 return stream; 170 } 171 172 return NULL; 173 } 174 175 /* ------------------------------------------------------------------------ 176 * Streaming Object Management 177 */ 178 179 static void uvc_stream_delete(struct uvc_streaming *stream) 180 { 181 if (stream->async_wq) 182 destroy_workqueue(stream->async_wq); 183 184 mutex_destroy(&stream->mutex); 185 186 usb_put_intf(stream->intf); 187 188 kfree(stream->formats); 189 kfree(stream->header.bmaControls); 190 kfree(stream); 191 } 192 193 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev, 194 struct usb_interface *intf) 195 { 196 struct uvc_streaming *stream; 197 198 stream = kzalloc(sizeof(*stream), GFP_KERNEL); 199 if (stream == NULL) 200 return NULL; 201 202 mutex_init(&stream->mutex); 203 204 stream->dev = dev; 205 stream->intf = usb_get_intf(intf); 206 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 207 208 /* Allocate a stream specific work queue for asynchronous tasks. */ 209 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI, 210 0); 211 if (!stream->async_wq) { 212 uvc_stream_delete(stream); 213 return NULL; 214 } 215 216 return stream; 217 } 218 219 /* ------------------------------------------------------------------------ 220 * Descriptors parsing 221 */ 222 223 static int uvc_parse_format(struct uvc_device *dev, 224 struct uvc_streaming *streaming, struct uvc_format *format, 225 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer, 226 int buflen) 227 { 228 struct usb_interface *intf = streaming->intf; 229 struct usb_host_interface *alts = intf->cur_altsetting; 230 const struct uvc_format_desc *fmtdesc; 231 struct uvc_frame *frame; 232 const unsigned char *start = buffer; 233 unsigned int width_multiplier = 1; 234 unsigned int interval; 235 unsigned int i, n; 236 u8 ftype; 237 238 format->type = buffer[2]; 239 format->index = buffer[3]; 240 format->frames = frames; 241 242 switch (buffer[2]) { 243 case UVC_VS_FORMAT_UNCOMPRESSED: 244 case UVC_VS_FORMAT_FRAME_BASED: 245 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 246 if (buflen < n) { 247 uvc_dbg(dev, DESCR, 248 "device %d videostreaming interface %d FORMAT error\n", 249 dev->udev->devnum, 250 alts->desc.bInterfaceNumber); 251 return -EINVAL; 252 } 253 254 /* Find the format descriptor from its GUID. */ 255 fmtdesc = uvc_format_by_guid(&buffer[5]); 256 257 if (!fmtdesc) { 258 /* 259 * Unknown video formats are not fatal errors, the 260 * caller will skip this descriptor. 261 */ 262 dev_info(&streaming->intf->dev, 263 "Unknown video format %pUl\n", &buffer[5]); 264 return 0; 265 } 266 267 format->fcc = fmtdesc->fcc; 268 format->bpp = buffer[21]; 269 270 /* 271 * Some devices report a format that doesn't match what they 272 * really send. 273 */ 274 if (dev->quirks & UVC_QUIRK_FORCE_Y8) { 275 if (format->fcc == V4L2_PIX_FMT_YUYV) { 276 format->fcc = V4L2_PIX_FMT_GREY; 277 format->bpp = 8; 278 width_multiplier = 2; 279 } 280 } 281 282 /* Some devices report bpp that doesn't match the format. */ 283 if (dev->quirks & UVC_QUIRK_FORCE_BPP) { 284 const struct v4l2_format_info *info = 285 v4l2_format_info(format->fcc); 286 287 if (info) { 288 unsigned int div = info->hdiv * info->vdiv; 289 290 n = info->bpp[0] * div; 291 for (i = 1; i < info->comp_planes; i++) 292 n += info->bpp[i]; 293 294 format->bpp = DIV_ROUND_UP(8 * n, div); 295 } 296 } 297 298 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 299 ftype = UVC_VS_FRAME_UNCOMPRESSED; 300 } else { 301 ftype = UVC_VS_FRAME_FRAME_BASED; 302 if (buffer[27]) 303 format->flags = UVC_FMT_FLAG_COMPRESSED; 304 } 305 break; 306 307 case UVC_VS_FORMAT_MJPEG: 308 if (buflen < 11) { 309 uvc_dbg(dev, DESCR, 310 "device %d videostreaming interface %d FORMAT error\n", 311 dev->udev->devnum, 312 alts->desc.bInterfaceNumber); 313 return -EINVAL; 314 } 315 316 format->fcc = V4L2_PIX_FMT_MJPEG; 317 format->flags = UVC_FMT_FLAG_COMPRESSED; 318 format->bpp = 0; 319 ftype = UVC_VS_FRAME_MJPEG; 320 break; 321 322 case UVC_VS_FORMAT_DV: 323 if (buflen < 9) { 324 uvc_dbg(dev, DESCR, 325 "device %d videostreaming interface %d FORMAT error\n", 326 dev->udev->devnum, 327 alts->desc.bInterfaceNumber); 328 return -EINVAL; 329 } 330 331 if ((buffer[8] & 0x7f) > 2) { 332 uvc_dbg(dev, DESCR, 333 "device %d videostreaming interface %d: unknown DV format %u\n", 334 dev->udev->devnum, 335 alts->desc.bInterfaceNumber, buffer[8]); 336 return -EINVAL; 337 } 338 339 format->fcc = V4L2_PIX_FMT_DV; 340 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 341 format->bpp = 0; 342 ftype = 0; 343 344 /* Create a dummy frame descriptor. */ 345 frame = &frames[0]; 346 memset(frame, 0, sizeof(*frame)); 347 frame->bFrameIntervalType = 1; 348 frame->dwDefaultFrameInterval = 1; 349 frame->dwFrameInterval = *intervals; 350 *(*intervals)++ = 1; 351 format->nframes = 1; 352 break; 353 354 case UVC_VS_FORMAT_MPEG2TS: 355 case UVC_VS_FORMAT_STREAM_BASED: 356 /* Not supported yet. */ 357 default: 358 uvc_dbg(dev, DESCR, 359 "device %d videostreaming interface %d unsupported format %u\n", 360 dev->udev->devnum, alts->desc.bInterfaceNumber, 361 buffer[2]); 362 return -EINVAL; 363 } 364 365 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc); 366 367 buflen -= buffer[0]; 368 buffer += buffer[0]; 369 370 /* 371 * Parse the frame descriptors. Only uncompressed, MJPEG and frame 372 * based formats have frame descriptors. 373 */ 374 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 375 buffer[2] == ftype) { 376 unsigned int maxIntervalIndex; 377 378 frame = &frames[format->nframes]; 379 if (ftype != UVC_VS_FRAME_FRAME_BASED) 380 n = buflen > 25 ? buffer[25] : 0; 381 else 382 n = buflen > 21 ? buffer[21] : 0; 383 384 n = n ? n : 3; 385 386 if (buflen < 26 + 4*n) { 387 uvc_dbg(dev, DESCR, 388 "device %d videostreaming interface %d FRAME error\n", 389 dev->udev->devnum, 390 alts->desc.bInterfaceNumber); 391 return -EINVAL; 392 } 393 394 frame->bFrameIndex = buffer[3]; 395 frame->bmCapabilities = buffer[4]; 396 frame->wWidth = get_unaligned_le16(&buffer[5]) 397 * width_multiplier; 398 frame->wHeight = get_unaligned_le16(&buffer[7]); 399 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 400 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 401 if (ftype != UVC_VS_FRAME_FRAME_BASED) { 402 frame->dwMaxVideoFrameBufferSize = 403 get_unaligned_le32(&buffer[17]); 404 frame->dwDefaultFrameInterval = 405 get_unaligned_le32(&buffer[21]); 406 frame->bFrameIntervalType = buffer[25]; 407 } else { 408 frame->dwMaxVideoFrameBufferSize = 0; 409 frame->dwDefaultFrameInterval = 410 get_unaligned_le32(&buffer[17]); 411 frame->bFrameIntervalType = buffer[21]; 412 } 413 414 /* 415 * Copy the frame intervals. 416 * 417 * Some bogus devices report dwMinFrameInterval equal to 418 * dwMaxFrameInterval and have dwFrameIntervalStep set to 419 * zero. Setting all null intervals to 1 fixes the problem and 420 * some other divisions by zero that could happen. 421 */ 422 frame->dwFrameInterval = *intervals; 423 424 for (i = 0; i < n; ++i) { 425 interval = get_unaligned_le32(&buffer[26+4*i]); 426 (*intervals)[i] = interval ? interval : 1; 427 } 428 429 /* 430 * Apply more fixes, quirks and workarounds to handle incorrect 431 * or broken descriptors. 432 */ 433 434 /* 435 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize 436 * completely. Observed behaviours range from setting the 437 * value to 1.1x the actual frame size to hardwiring the 438 * 16 low bits to 0. This results in a higher than necessary 439 * memory usage as well as a wrong image size information. For 440 * uncompressed formats this can be fixed by computing the 441 * value from the frame size. 442 */ 443 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 444 frame->dwMaxVideoFrameBufferSize = format->bpp 445 * frame->wWidth * frame->wHeight / 8; 446 447 /* 448 * Clamp the default frame interval to the boundaries. A zero 449 * bFrameIntervalType value indicates a continuous frame 450 * interval range, with dwFrameInterval[0] storing the minimum 451 * value and dwFrameInterval[1] storing the maximum value. 452 */ 453 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1; 454 frame->dwDefaultFrameInterval = 455 clamp(frame->dwDefaultFrameInterval, 456 frame->dwFrameInterval[0], 457 frame->dwFrameInterval[maxIntervalIndex]); 458 459 /* 460 * Some devices report frame intervals that are not functional. 461 * If the corresponding quirk is set, restrict operation to the 462 * first interval only. 463 */ 464 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { 465 frame->bFrameIntervalType = 1; 466 (*intervals)[0] = frame->dwDefaultFrameInterval; 467 } 468 469 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n", 470 frame->wWidth, frame->wHeight, 471 10000000 / frame->dwDefaultFrameInterval, 472 (100000000 / frame->dwDefaultFrameInterval) % 10); 473 474 format->nframes++; 475 *intervals += n; 476 477 buflen -= buffer[0]; 478 buffer += buffer[0]; 479 } 480 481 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 482 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 483 buflen -= buffer[0]; 484 buffer += buffer[0]; 485 } 486 487 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 488 buffer[2] == UVC_VS_COLORFORMAT) { 489 if (buflen < 6) { 490 uvc_dbg(dev, DESCR, 491 "device %d videostreaming interface %d COLORFORMAT error\n", 492 dev->udev->devnum, 493 alts->desc.bInterfaceNumber); 494 return -EINVAL; 495 } 496 497 format->colorspace = uvc_colorspace(buffer[3]); 498 format->xfer_func = uvc_xfer_func(buffer[4]); 499 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]); 500 501 buflen -= buffer[0]; 502 buffer += buffer[0]; 503 } else { 504 format->colorspace = V4L2_COLORSPACE_SRGB; 505 } 506 507 return buffer - start; 508 } 509 510 static int uvc_parse_streaming(struct uvc_device *dev, 511 struct usb_interface *intf) 512 { 513 struct uvc_streaming *streaming = NULL; 514 struct uvc_format *format; 515 struct uvc_frame *frame; 516 struct usb_host_interface *alts = &intf->altsetting[0]; 517 const unsigned char *_buffer, *buffer = alts->extra; 518 int _buflen, buflen = alts->extralen; 519 unsigned int nformats = 0, nframes = 0, nintervals = 0; 520 unsigned int size, i, n, p; 521 u32 *interval; 522 u16 psize; 523 int ret = -EINVAL; 524 525 if (intf->cur_altsetting->desc.bInterfaceSubClass 526 != UVC_SC_VIDEOSTREAMING) { 527 uvc_dbg(dev, DESCR, 528 "device %d interface %d isn't a video streaming interface\n", 529 dev->udev->devnum, 530 intf->altsetting[0].desc.bInterfaceNumber); 531 return -EINVAL; 532 } 533 534 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 535 uvc_dbg(dev, DESCR, 536 "device %d interface %d is already claimed\n", 537 dev->udev->devnum, 538 intf->altsetting[0].desc.bInterfaceNumber); 539 return -EINVAL; 540 } 541 542 streaming = uvc_stream_new(dev, intf); 543 if (streaming == NULL) { 544 usb_driver_release_interface(&uvc_driver.driver, intf); 545 return -ENOMEM; 546 } 547 548 /* 549 * The Pico iMage webcam has its class-specific interface descriptors 550 * after the endpoint descriptors. 551 */ 552 if (buflen == 0) { 553 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 554 struct usb_host_endpoint *ep = &alts->endpoint[i]; 555 556 if (ep->extralen == 0) 557 continue; 558 559 if (ep->extralen > 2 && 560 ep->extra[1] == USB_DT_CS_INTERFACE) { 561 uvc_dbg(dev, DESCR, 562 "trying extra data from endpoint %u\n", 563 i); 564 buffer = alts->endpoint[i].extra; 565 buflen = alts->endpoint[i].extralen; 566 break; 567 } 568 } 569 } 570 571 /* Skip the standard interface descriptors. */ 572 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 573 buflen -= buffer[0]; 574 buffer += buffer[0]; 575 } 576 577 if (buflen <= 2) { 578 uvc_dbg(dev, DESCR, 579 "no class-specific streaming interface descriptors found\n"); 580 goto error; 581 } 582 583 /* Parse the header descriptor. */ 584 switch (buffer[2]) { 585 case UVC_VS_OUTPUT_HEADER: 586 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 587 size = 9; 588 break; 589 590 case UVC_VS_INPUT_HEADER: 591 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 592 size = 13; 593 break; 594 595 default: 596 uvc_dbg(dev, DESCR, 597 "device %d videostreaming interface %d HEADER descriptor not found\n", 598 dev->udev->devnum, alts->desc.bInterfaceNumber); 599 goto error; 600 } 601 602 p = buflen >= 4 ? buffer[3] : 0; 603 n = buflen >= size ? buffer[size-1] : 0; 604 605 if (buflen < size + p*n) { 606 uvc_dbg(dev, DESCR, 607 "device %d videostreaming interface %d HEADER descriptor is invalid\n", 608 dev->udev->devnum, alts->desc.bInterfaceNumber); 609 goto error; 610 } 611 612 streaming->header.bNumFormats = p; 613 streaming->header.bEndpointAddress = buffer[6]; 614 if (buffer[2] == UVC_VS_INPUT_HEADER) { 615 streaming->header.bmInfo = buffer[7]; 616 streaming->header.bTerminalLink = buffer[8]; 617 streaming->header.bStillCaptureMethod = buffer[9]; 618 streaming->header.bTriggerSupport = buffer[10]; 619 streaming->header.bTriggerUsage = buffer[11]; 620 } else { 621 streaming->header.bTerminalLink = buffer[7]; 622 } 623 streaming->header.bControlSize = n; 624 625 streaming->header.bmaControls = kmemdup(&buffer[size], p * n, 626 GFP_KERNEL); 627 if (streaming->header.bmaControls == NULL) { 628 ret = -ENOMEM; 629 goto error; 630 } 631 632 buflen -= buffer[0]; 633 buffer += buffer[0]; 634 635 _buffer = buffer; 636 _buflen = buflen; 637 638 /* Count the format and frame descriptors. */ 639 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 640 switch (_buffer[2]) { 641 case UVC_VS_FORMAT_UNCOMPRESSED: 642 case UVC_VS_FORMAT_MJPEG: 643 case UVC_VS_FORMAT_FRAME_BASED: 644 nformats++; 645 break; 646 647 case UVC_VS_FORMAT_DV: 648 /* 649 * DV format has no frame descriptor. We will create a 650 * dummy frame descriptor with a dummy frame interval. 651 */ 652 nformats++; 653 nframes++; 654 nintervals++; 655 break; 656 657 case UVC_VS_FORMAT_MPEG2TS: 658 case UVC_VS_FORMAT_STREAM_BASED: 659 uvc_dbg(dev, DESCR, 660 "device %d videostreaming interface %d FORMAT %u is not supported\n", 661 dev->udev->devnum, 662 alts->desc.bInterfaceNumber, _buffer[2]); 663 break; 664 665 case UVC_VS_FRAME_UNCOMPRESSED: 666 case UVC_VS_FRAME_MJPEG: 667 nframes++; 668 if (_buflen > 25) 669 nintervals += _buffer[25] ? _buffer[25] : 3; 670 break; 671 672 case UVC_VS_FRAME_FRAME_BASED: 673 nframes++; 674 if (_buflen > 21) 675 nintervals += _buffer[21] ? _buffer[21] : 3; 676 break; 677 } 678 679 _buflen -= _buffer[0]; 680 _buffer += _buffer[0]; 681 } 682 683 if (nformats == 0) { 684 uvc_dbg(dev, DESCR, 685 "device %d videostreaming interface %d has no supported formats defined\n", 686 dev->udev->devnum, alts->desc.bInterfaceNumber); 687 goto error; 688 } 689 690 size = nformats * sizeof(*format) + nframes * sizeof(*frame) 691 + nintervals * sizeof(*interval); 692 format = kzalloc(size, GFP_KERNEL); 693 if (format == NULL) { 694 ret = -ENOMEM; 695 goto error; 696 } 697 698 frame = (struct uvc_frame *)&format[nformats]; 699 interval = (u32 *)&frame[nframes]; 700 701 streaming->formats = format; 702 streaming->nformats = 0; 703 704 /* Parse the format descriptors. */ 705 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 706 switch (buffer[2]) { 707 case UVC_VS_FORMAT_UNCOMPRESSED: 708 case UVC_VS_FORMAT_MJPEG: 709 case UVC_VS_FORMAT_DV: 710 case UVC_VS_FORMAT_FRAME_BASED: 711 ret = uvc_parse_format(dev, streaming, format, frame, 712 &interval, buffer, buflen); 713 if (ret < 0) 714 goto error; 715 if (!ret) 716 break; 717 718 streaming->nformats++; 719 frame += format->nframes; 720 format++; 721 722 buflen -= ret; 723 buffer += ret; 724 continue; 725 726 default: 727 break; 728 } 729 730 buflen -= buffer[0]; 731 buffer += buffer[0]; 732 } 733 734 if (buflen) 735 uvc_dbg(dev, DESCR, 736 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n", 737 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 738 739 /* Parse the alternate settings to find the maximum bandwidth. */ 740 for (i = 0; i < intf->num_altsetting; ++i) { 741 struct usb_host_endpoint *ep; 742 743 alts = &intf->altsetting[i]; 744 ep = uvc_find_endpoint(alts, 745 streaming->header.bEndpointAddress); 746 if (ep == NULL) 747 continue; 748 psize = uvc_endpoint_max_bpi(dev->udev, ep); 749 if (psize > streaming->maxpsize) 750 streaming->maxpsize = psize; 751 } 752 753 list_add_tail(&streaming->list, &dev->streams); 754 return 0; 755 756 error: 757 usb_driver_release_interface(&uvc_driver.driver, intf); 758 uvc_stream_delete(streaming); 759 return ret; 760 } 761 762 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA; 763 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER; 764 static const u8 uvc_media_transport_input_guid[16] = 765 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT; 766 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING; 767 768 static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id, 769 unsigned int num_pads, unsigned int extra_size) 770 { 771 struct uvc_entity *entity; 772 unsigned int num_inputs; 773 unsigned int size; 774 unsigned int i; 775 776 extra_size = roundup(extra_size, sizeof(*entity->pads)); 777 if (num_pads) 778 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1; 779 else 780 num_inputs = 0; 781 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads 782 + num_inputs; 783 entity = kzalloc(size, GFP_KERNEL); 784 if (entity == NULL) 785 return NULL; 786 787 entity->id = id; 788 entity->type = type; 789 790 /* 791 * Set the GUID for standard entity types. For extension units, the GUID 792 * is initialized by the caller. 793 */ 794 switch (type) { 795 case UVC_EXT_GPIO_UNIT: 796 memcpy(entity->guid, uvc_gpio_guid, 16); 797 break; 798 case UVC_ITT_CAMERA: 799 memcpy(entity->guid, uvc_camera_guid, 16); 800 break; 801 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 802 memcpy(entity->guid, uvc_media_transport_input_guid, 16); 803 break; 804 case UVC_VC_PROCESSING_UNIT: 805 memcpy(entity->guid, uvc_processing_guid, 16); 806 break; 807 } 808 809 entity->num_links = 0; 810 entity->num_pads = num_pads; 811 entity->pads = ((void *)(entity + 1)) + extra_size; 812 813 for (i = 0; i < num_inputs; ++i) 814 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 815 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads) 816 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; 817 818 entity->bNrInPins = num_inputs; 819 entity->baSourceID = (u8 *)(&entity->pads[num_pads]); 820 821 return entity; 822 } 823 824 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity, 825 const char *type_name, u8 string_id) 826 { 827 int ret; 828 829 /* 830 * First attempt to read the entity name from the device. If the entity 831 * has no associated string, or if reading the string fails (most 832 * likely due to a buggy firmware), fall back to default names based on 833 * the entity type. 834 */ 835 if (string_id) { 836 ret = usb_string(dev->udev, string_id, entity->name, 837 sizeof(entity->name)); 838 if (!ret) 839 return; 840 } 841 842 sprintf(entity->name, "%s %u", type_name, entity->id); 843 } 844 845 /* Parse vendor-specific extensions. */ 846 static int uvc_parse_vendor_control(struct uvc_device *dev, 847 const unsigned char *buffer, int buflen) 848 { 849 struct usb_device *udev = dev->udev; 850 struct usb_host_interface *alts = dev->intf->cur_altsetting; 851 struct uvc_entity *unit; 852 unsigned int n, p; 853 int handled = 0; 854 855 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 856 case 0x046d: /* Logitech */ 857 if (buffer[1] != 0x41 || buffer[2] != 0x01) 858 break; 859 860 /* 861 * Logitech implements several vendor specific functions 862 * through vendor specific extension units (LXU). 863 * 864 * The LXU descriptors are similar to XU descriptors 865 * (see "USB Device Video Class for Video Devices", section 866 * 3.7.2.6 "Extension Unit Descriptor") with the following 867 * differences: 868 * 869 * ---------------------------------------------------------- 870 * 0 bLength 1 Number 871 * Size of this descriptor, in bytes: 24+p+n*2 872 * ---------------------------------------------------------- 873 * 23+p+n bmControlsType N Bitmap 874 * Individual bits in the set are defined: 875 * 0: Absolute 876 * 1: Relative 877 * 878 * This bitset is mapped exactly the same as bmControls. 879 * ---------------------------------------------------------- 880 * 23+p+n*2 bReserved 1 Boolean 881 * ---------------------------------------------------------- 882 * 24+p+n*2 iExtension 1 Index 883 * Index of a string descriptor that describes this 884 * extension unit. 885 * ---------------------------------------------------------- 886 */ 887 p = buflen >= 22 ? buffer[21] : 0; 888 n = buflen >= 25 + p ? buffer[22+p] : 0; 889 890 if (buflen < 25 + p + 2*n) { 891 uvc_dbg(dev, DESCR, 892 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 893 udev->devnum, alts->desc.bInterfaceNumber); 894 break; 895 } 896 897 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], 898 p + 1, 2*n); 899 if (unit == NULL) 900 return -ENOMEM; 901 902 memcpy(unit->guid, &buffer[4], 16); 903 unit->extension.bNumControls = buffer[20]; 904 memcpy(unit->baSourceID, &buffer[22], p); 905 unit->extension.bControlSize = buffer[22+p]; 906 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 907 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit) 908 + n; 909 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 910 911 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]); 912 913 list_add_tail(&unit->list, &dev->entities); 914 handled = 1; 915 break; 916 } 917 918 return handled; 919 } 920 921 static int uvc_parse_standard_control(struct uvc_device *dev, 922 const unsigned char *buffer, int buflen) 923 { 924 struct usb_device *udev = dev->udev; 925 struct uvc_entity *unit, *term; 926 struct usb_interface *intf; 927 struct usb_host_interface *alts = dev->intf->cur_altsetting; 928 unsigned int i, n, p, len; 929 const char *type_name; 930 u16 type; 931 932 switch (buffer[2]) { 933 case UVC_VC_HEADER: 934 n = buflen >= 12 ? buffer[11] : 0; 935 936 if (buflen < 12 + n) { 937 uvc_dbg(dev, DESCR, 938 "device %d videocontrol interface %d HEADER error\n", 939 udev->devnum, alts->desc.bInterfaceNumber); 940 return -EINVAL; 941 } 942 943 dev->uvc_version = get_unaligned_le16(&buffer[3]); 944 dev->clock_frequency = get_unaligned_le32(&buffer[7]); 945 946 /* Parse all USB Video Streaming interfaces. */ 947 for (i = 0; i < n; ++i) { 948 intf = usb_ifnum_to_if(udev, buffer[12+i]); 949 if (intf == NULL) { 950 uvc_dbg(dev, DESCR, 951 "device %d interface %d doesn't exists\n", 952 udev->devnum, i); 953 continue; 954 } 955 956 uvc_parse_streaming(dev, intf); 957 } 958 break; 959 960 case UVC_VC_INPUT_TERMINAL: 961 if (buflen < 8) { 962 uvc_dbg(dev, DESCR, 963 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 964 udev->devnum, alts->desc.bInterfaceNumber); 965 return -EINVAL; 966 } 967 968 /* 969 * Reject invalid terminal types that would cause issues: 970 * 971 * - The high byte must be non-zero, otherwise it would be 972 * confused with a unit. 973 * 974 * - Bit 15 must be 0, as we use it internally as a terminal 975 * direction flag. 976 * 977 * Other unknown types are accepted. 978 */ 979 type = get_unaligned_le16(&buffer[4]); 980 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) { 981 uvc_dbg(dev, DESCR, 982 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 983 udev->devnum, alts->desc.bInterfaceNumber, 984 buffer[3], type); 985 return 0; 986 } 987 988 n = 0; 989 p = 0; 990 len = 8; 991 992 if (type == UVC_ITT_CAMERA) { 993 n = buflen >= 15 ? buffer[14] : 0; 994 len = 15; 995 996 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 997 n = buflen >= 9 ? buffer[8] : 0; 998 p = buflen >= 10 + n ? buffer[9+n] : 0; 999 len = 10; 1000 } 1001 1002 if (buflen < len + n + p) { 1003 uvc_dbg(dev, DESCR, 1004 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1005 udev->devnum, alts->desc.bInterfaceNumber); 1006 return -EINVAL; 1007 } 1008 1009 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], 1010 1, n + p); 1011 if (term == NULL) 1012 return -ENOMEM; 1013 1014 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 1015 term->camera.bControlSize = n; 1016 term->camera.bmControls = (u8 *)term + sizeof(*term); 1017 term->camera.wObjectiveFocalLengthMin = 1018 get_unaligned_le16(&buffer[8]); 1019 term->camera.wObjectiveFocalLengthMax = 1020 get_unaligned_le16(&buffer[10]); 1021 term->camera.wOcularFocalLength = 1022 get_unaligned_le16(&buffer[12]); 1023 memcpy(term->camera.bmControls, &buffer[15], n); 1024 } else if (UVC_ENTITY_TYPE(term) == 1025 UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1026 term->media.bControlSize = n; 1027 term->media.bmControls = (u8 *)term + sizeof(*term); 1028 term->media.bTransportModeSize = p; 1029 term->media.bmTransportModes = (u8 *)term 1030 + sizeof(*term) + n; 1031 memcpy(term->media.bmControls, &buffer[9], n); 1032 memcpy(term->media.bmTransportModes, &buffer[10+n], p); 1033 } 1034 1035 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 1036 type_name = "Camera"; 1037 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 1038 type_name = "Media"; 1039 else 1040 type_name = "Input"; 1041 1042 uvc_entity_set_name(dev, term, type_name, buffer[7]); 1043 1044 list_add_tail(&term->list, &dev->entities); 1045 break; 1046 1047 case UVC_VC_OUTPUT_TERMINAL: 1048 if (buflen < 9) { 1049 uvc_dbg(dev, DESCR, 1050 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n", 1051 udev->devnum, alts->desc.bInterfaceNumber); 1052 return -EINVAL; 1053 } 1054 1055 /* 1056 * Make sure the terminal type MSB is not null, otherwise it 1057 * could be confused with a unit. 1058 */ 1059 type = get_unaligned_le16(&buffer[4]); 1060 if ((type & 0xff00) == 0) { 1061 uvc_dbg(dev, DESCR, 1062 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1063 udev->devnum, alts->desc.bInterfaceNumber, 1064 buffer[3], type); 1065 return 0; 1066 } 1067 1068 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], 1069 1, 0); 1070 if (term == NULL) 1071 return -ENOMEM; 1072 1073 memcpy(term->baSourceID, &buffer[7], 1); 1074 1075 uvc_entity_set_name(dev, term, "Output", buffer[8]); 1076 1077 list_add_tail(&term->list, &dev->entities); 1078 break; 1079 1080 case UVC_VC_SELECTOR_UNIT: 1081 p = buflen >= 5 ? buffer[4] : 0; 1082 1083 if (buflen < 5 || buflen < 6 + p) { 1084 uvc_dbg(dev, DESCR, 1085 "device %d videocontrol interface %d SELECTOR_UNIT error\n", 1086 udev->devnum, alts->desc.bInterfaceNumber); 1087 return -EINVAL; 1088 } 1089 1090 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); 1091 if (unit == NULL) 1092 return -ENOMEM; 1093 1094 memcpy(unit->baSourceID, &buffer[5], p); 1095 1096 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]); 1097 1098 list_add_tail(&unit->list, &dev->entities); 1099 break; 1100 1101 case UVC_VC_PROCESSING_UNIT: 1102 n = buflen >= 8 ? buffer[7] : 0; 1103 p = dev->uvc_version >= 0x0110 ? 10 : 9; 1104 1105 if (buflen < p + n) { 1106 uvc_dbg(dev, DESCR, 1107 "device %d videocontrol interface %d PROCESSING_UNIT error\n", 1108 udev->devnum, alts->desc.bInterfaceNumber); 1109 return -EINVAL; 1110 } 1111 1112 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); 1113 if (unit == NULL) 1114 return -ENOMEM; 1115 1116 memcpy(unit->baSourceID, &buffer[4], 1); 1117 unit->processing.wMaxMultiplier = 1118 get_unaligned_le16(&buffer[5]); 1119 unit->processing.bControlSize = buffer[7]; 1120 unit->processing.bmControls = (u8 *)unit + sizeof(*unit); 1121 memcpy(unit->processing.bmControls, &buffer[8], n); 1122 if (dev->uvc_version >= 0x0110) 1123 unit->processing.bmVideoStandards = buffer[9+n]; 1124 1125 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]); 1126 1127 list_add_tail(&unit->list, &dev->entities); 1128 break; 1129 1130 case UVC_VC_EXTENSION_UNIT: 1131 p = buflen >= 22 ? buffer[21] : 0; 1132 n = buflen >= 24 + p ? buffer[22+p] : 0; 1133 1134 if (buflen < 24 + p + n) { 1135 uvc_dbg(dev, DESCR, 1136 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 1137 udev->devnum, alts->desc.bInterfaceNumber); 1138 return -EINVAL; 1139 } 1140 1141 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); 1142 if (unit == NULL) 1143 return -ENOMEM; 1144 1145 memcpy(unit->guid, &buffer[4], 16); 1146 unit->extension.bNumControls = buffer[20]; 1147 memcpy(unit->baSourceID, &buffer[22], p); 1148 unit->extension.bControlSize = buffer[22+p]; 1149 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 1150 memcpy(unit->extension.bmControls, &buffer[23+p], n); 1151 1152 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]); 1153 1154 list_add_tail(&unit->list, &dev->entities); 1155 break; 1156 1157 default: 1158 uvc_dbg(dev, DESCR, 1159 "Found an unknown CS_INTERFACE descriptor (%u)\n", 1160 buffer[2]); 1161 break; 1162 } 1163 1164 return 0; 1165 } 1166 1167 static int uvc_parse_control(struct uvc_device *dev) 1168 { 1169 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1170 const unsigned char *buffer = alts->extra; 1171 int buflen = alts->extralen; 1172 int ret; 1173 1174 /* 1175 * Parse the default alternate setting only, as the UVC specification 1176 * defines a single alternate setting, the default alternate setting 1177 * zero. 1178 */ 1179 1180 while (buflen > 2) { 1181 if (uvc_parse_vendor_control(dev, buffer, buflen) || 1182 buffer[1] != USB_DT_CS_INTERFACE) 1183 goto next_descriptor; 1184 1185 ret = uvc_parse_standard_control(dev, buffer, buflen); 1186 if (ret < 0) 1187 return ret; 1188 1189 next_descriptor: 1190 buflen -= buffer[0]; 1191 buffer += buffer[0]; 1192 } 1193 1194 /* 1195 * Check if the optional status endpoint is present. Built-in iSight 1196 * webcams have an interrupt endpoint but spit proprietary data that 1197 * don't conform to the UVC status endpoint messages. Don't try to 1198 * handle the interrupt endpoint for those cameras. 1199 */ 1200 if (alts->desc.bNumEndpoints == 1 && 1201 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1202 struct usb_host_endpoint *ep = &alts->endpoint[0]; 1203 struct usb_endpoint_descriptor *desc = &ep->desc; 1204 1205 if (usb_endpoint_is_int_in(desc) && 1206 le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1207 desc->bInterval != 0) { 1208 uvc_dbg(dev, DESCR, 1209 "Found a Status endpoint (addr %02x)\n", 1210 desc->bEndpointAddress); 1211 dev->int_ep = ep; 1212 } 1213 } 1214 1215 return 0; 1216 } 1217 1218 /* ----------------------------------------------------------------------------- 1219 * Privacy GPIO 1220 */ 1221 1222 static void uvc_gpio_event(struct uvc_device *dev) 1223 { 1224 struct uvc_entity *unit = dev->gpio_unit; 1225 struct uvc_video_chain *chain; 1226 u8 new_val; 1227 1228 if (!unit) 1229 return; 1230 1231 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy); 1232 1233 /* GPIO entities are always on the first chain. */ 1234 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list); 1235 uvc_ctrl_status_event(chain, unit->controls, &new_val); 1236 } 1237 1238 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity, 1239 u8 cs, void *data, u16 size) 1240 { 1241 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1) 1242 return -EINVAL; 1243 1244 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy); 1245 1246 return 0; 1247 } 1248 1249 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity, 1250 u8 cs, u8 *caps) 1251 { 1252 if (cs != UVC_CT_PRIVACY_CONTROL) 1253 return -EINVAL; 1254 1255 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE; 1256 return 0; 1257 } 1258 1259 static irqreturn_t uvc_gpio_irq(int irq, void *data) 1260 { 1261 struct uvc_device *dev = data; 1262 1263 uvc_gpio_event(dev); 1264 return IRQ_HANDLED; 1265 } 1266 1267 static int uvc_gpio_parse(struct uvc_device *dev) 1268 { 1269 struct uvc_entity *unit; 1270 struct gpio_desc *gpio_privacy; 1271 int irq; 1272 1273 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy", 1274 GPIOD_IN); 1275 if (IS_ERR_OR_NULL(gpio_privacy)) 1276 return PTR_ERR_OR_ZERO(gpio_privacy); 1277 1278 irq = gpiod_to_irq(gpio_privacy); 1279 if (irq < 0) 1280 return dev_err_probe(&dev->udev->dev, irq, 1281 "No IRQ for privacy GPIO\n"); 1282 1283 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1); 1284 if (!unit) 1285 return -ENOMEM; 1286 1287 unit->gpio.gpio_privacy = gpio_privacy; 1288 unit->gpio.irq = irq; 1289 unit->gpio.bControlSize = 1; 1290 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit); 1291 unit->gpio.bmControls[0] = 1; 1292 unit->get_cur = uvc_gpio_get_cur; 1293 unit->get_info = uvc_gpio_get_info; 1294 strscpy(unit->name, "GPIO", sizeof(unit->name)); 1295 1296 list_add_tail(&unit->list, &dev->entities); 1297 1298 dev->gpio_unit = unit; 1299 1300 return 0; 1301 } 1302 1303 static int uvc_gpio_init_irq(struct uvc_device *dev) 1304 { 1305 struct uvc_entity *unit = dev->gpio_unit; 1306 1307 if (!unit || unit->gpio.irq < 0) 1308 return 0; 1309 1310 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL, 1311 uvc_gpio_irq, 1312 IRQF_ONESHOT | IRQF_TRIGGER_FALLING | 1313 IRQF_TRIGGER_RISING, 1314 "uvc_privacy_gpio", dev); 1315 } 1316 1317 /* ------------------------------------------------------------------------ 1318 * UVC device scan 1319 */ 1320 1321 /* 1322 * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1323 * and containing the following units: 1324 * 1325 * - one or more Output Terminals (USB Streaming or Display) 1326 * - zero or one Processing Unit 1327 * - zero, one or more single-input Selector Units 1328 * - zero or one multiple-input Selector Units, provided all inputs are 1329 * connected to input terminals 1330 * - zero, one or mode single-input Extension Units 1331 * - one or more Input Terminals (Camera, External or USB Streaming) 1332 * 1333 * The terminal and units must match on of the following structures: 1334 * 1335 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 1336 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 1337 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 1338 * 1339 * +---------+ +---------+ -> OTT_*(0) 1340 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 1341 * +---------+ +---------+ -> OTT_*(n) 1342 * 1343 * The Processing Unit and Extension Units can be in any order. Additional 1344 * Extension Units connected to the main chain as single-unit branches are 1345 * also supported. Single-input Selector Units are ignored. 1346 */ 1347 static int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1348 struct uvc_entity *entity) 1349 { 1350 switch (UVC_ENTITY_TYPE(entity)) { 1351 case UVC_VC_EXTENSION_UNIT: 1352 uvc_dbg_cont(PROBE, " <- XU %d", entity->id); 1353 1354 if (entity->bNrInPins != 1) { 1355 uvc_dbg(chain->dev, DESCR, 1356 "Extension unit %d has more than 1 input pin\n", 1357 entity->id); 1358 return -1; 1359 } 1360 1361 break; 1362 1363 case UVC_VC_PROCESSING_UNIT: 1364 uvc_dbg_cont(PROBE, " <- PU %d", entity->id); 1365 1366 if (chain->processing != NULL) { 1367 uvc_dbg(chain->dev, DESCR, 1368 "Found multiple Processing Units in chain\n"); 1369 return -1; 1370 } 1371 1372 chain->processing = entity; 1373 break; 1374 1375 case UVC_VC_SELECTOR_UNIT: 1376 uvc_dbg_cont(PROBE, " <- SU %d", entity->id); 1377 1378 /* Single-input selector units are ignored. */ 1379 if (entity->bNrInPins == 1) 1380 break; 1381 1382 if (chain->selector != NULL) { 1383 uvc_dbg(chain->dev, DESCR, 1384 "Found multiple Selector Units in chain\n"); 1385 return -1; 1386 } 1387 1388 chain->selector = entity; 1389 break; 1390 1391 case UVC_ITT_VENDOR_SPECIFIC: 1392 case UVC_ITT_CAMERA: 1393 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1394 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1395 1396 break; 1397 1398 case UVC_OTT_VENDOR_SPECIFIC: 1399 case UVC_OTT_DISPLAY: 1400 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1401 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1402 1403 break; 1404 1405 case UVC_TT_STREAMING: 1406 if (UVC_ENTITY_IS_ITERM(entity)) 1407 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1408 else 1409 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1410 1411 break; 1412 1413 default: 1414 uvc_dbg(chain->dev, DESCR, 1415 "Unsupported entity type 0x%04x found in chain\n", 1416 UVC_ENTITY_TYPE(entity)); 1417 return -1; 1418 } 1419 1420 list_add_tail(&entity->chain, &chain->entities); 1421 return 0; 1422 } 1423 1424 static int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1425 struct uvc_entity *entity, struct uvc_entity *prev) 1426 { 1427 struct uvc_entity *forward; 1428 int found; 1429 1430 /* Forward scan */ 1431 forward = NULL; 1432 found = 0; 1433 1434 while (1) { 1435 forward = uvc_entity_by_reference(chain->dev, entity->id, 1436 forward); 1437 if (forward == NULL) 1438 break; 1439 if (forward == prev) 1440 continue; 1441 if (forward->chain.next || forward->chain.prev) { 1442 uvc_dbg(chain->dev, DESCR, 1443 "Found reference to entity %d already in chain\n", 1444 forward->id); 1445 return -EINVAL; 1446 } 1447 1448 switch (UVC_ENTITY_TYPE(forward)) { 1449 case UVC_VC_EXTENSION_UNIT: 1450 if (forward->bNrInPins != 1) { 1451 uvc_dbg(chain->dev, DESCR, 1452 "Extension unit %d has more than 1 input pin\n", 1453 forward->id); 1454 return -EINVAL; 1455 } 1456 1457 /* 1458 * Some devices reference an output terminal as the 1459 * source of extension units. This is incorrect, as 1460 * output terminals only have an input pin, and thus 1461 * can't be connected to any entity in the forward 1462 * direction. The resulting topology would cause issues 1463 * when registering the media controller graph. To 1464 * avoid this problem, connect the extension unit to 1465 * the source of the output terminal instead. 1466 */ 1467 if (UVC_ENTITY_IS_OTERM(entity)) { 1468 struct uvc_entity *source; 1469 1470 source = uvc_entity_by_id(chain->dev, 1471 entity->baSourceID[0]); 1472 if (!source) { 1473 uvc_dbg(chain->dev, DESCR, 1474 "Can't connect extension unit %u in chain\n", 1475 forward->id); 1476 break; 1477 } 1478 1479 forward->baSourceID[0] = source->id; 1480 } 1481 1482 list_add_tail(&forward->chain, &chain->entities); 1483 if (!found) 1484 uvc_dbg_cont(PROBE, " (->"); 1485 1486 uvc_dbg_cont(PROBE, " XU %d", forward->id); 1487 found = 1; 1488 break; 1489 1490 case UVC_OTT_VENDOR_SPECIFIC: 1491 case UVC_OTT_DISPLAY: 1492 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1493 case UVC_TT_STREAMING: 1494 if (UVC_ENTITY_IS_ITERM(forward)) { 1495 uvc_dbg(chain->dev, DESCR, 1496 "Unsupported input terminal %u\n", 1497 forward->id); 1498 return -EINVAL; 1499 } 1500 1501 if (UVC_ENTITY_IS_OTERM(entity)) { 1502 uvc_dbg(chain->dev, DESCR, 1503 "Unsupported connection between output terminals %u and %u\n", 1504 entity->id, forward->id); 1505 break; 1506 } 1507 1508 list_add_tail(&forward->chain, &chain->entities); 1509 if (!found) 1510 uvc_dbg_cont(PROBE, " (->"); 1511 1512 uvc_dbg_cont(PROBE, " OT %d", forward->id); 1513 found = 1; 1514 break; 1515 } 1516 } 1517 if (found) 1518 uvc_dbg_cont(PROBE, ")"); 1519 1520 return 0; 1521 } 1522 1523 static int uvc_scan_chain_backward(struct uvc_video_chain *chain, 1524 struct uvc_entity **_entity) 1525 { 1526 struct uvc_entity *entity = *_entity; 1527 struct uvc_entity *term; 1528 int id = -EINVAL, i; 1529 1530 switch (UVC_ENTITY_TYPE(entity)) { 1531 case UVC_VC_EXTENSION_UNIT: 1532 case UVC_VC_PROCESSING_UNIT: 1533 id = entity->baSourceID[0]; 1534 break; 1535 1536 case UVC_VC_SELECTOR_UNIT: 1537 /* Single-input selector units are ignored. */ 1538 if (entity->bNrInPins == 1) { 1539 id = entity->baSourceID[0]; 1540 break; 1541 } 1542 1543 uvc_dbg_cont(PROBE, " <- IT"); 1544 1545 chain->selector = entity; 1546 for (i = 0; i < entity->bNrInPins; ++i) { 1547 id = entity->baSourceID[i]; 1548 term = uvc_entity_by_id(chain->dev, id); 1549 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1550 uvc_dbg(chain->dev, DESCR, 1551 "Selector unit %d input %d isn't connected to an input terminal\n", 1552 entity->id, i); 1553 return -1; 1554 } 1555 1556 if (term->chain.next || term->chain.prev) { 1557 uvc_dbg(chain->dev, DESCR, 1558 "Found reference to entity %d already in chain\n", 1559 term->id); 1560 return -EINVAL; 1561 } 1562 1563 uvc_dbg_cont(PROBE, " %d", term->id); 1564 1565 list_add_tail(&term->chain, &chain->entities); 1566 uvc_scan_chain_forward(chain, term, entity); 1567 } 1568 1569 uvc_dbg_cont(PROBE, "\n"); 1570 1571 id = 0; 1572 break; 1573 1574 case UVC_ITT_VENDOR_SPECIFIC: 1575 case UVC_ITT_CAMERA: 1576 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1577 case UVC_OTT_VENDOR_SPECIFIC: 1578 case UVC_OTT_DISPLAY: 1579 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1580 case UVC_TT_STREAMING: 1581 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 1582 break; 1583 } 1584 1585 if (id <= 0) { 1586 *_entity = NULL; 1587 return id; 1588 } 1589 1590 entity = uvc_entity_by_id(chain->dev, id); 1591 if (entity == NULL) { 1592 uvc_dbg(chain->dev, DESCR, 1593 "Found reference to unknown entity %d\n", id); 1594 return -EINVAL; 1595 } 1596 1597 *_entity = entity; 1598 return 0; 1599 } 1600 1601 static int uvc_scan_chain(struct uvc_video_chain *chain, 1602 struct uvc_entity *term) 1603 { 1604 struct uvc_entity *entity, *prev; 1605 1606 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:"); 1607 1608 entity = term; 1609 prev = NULL; 1610 1611 while (entity != NULL) { 1612 /* Entity must not be part of an existing chain */ 1613 if (entity->chain.next || entity->chain.prev) { 1614 uvc_dbg(chain->dev, DESCR, 1615 "Found reference to entity %d already in chain\n", 1616 entity->id); 1617 return -EINVAL; 1618 } 1619 1620 /* Process entity */ 1621 if (uvc_scan_chain_entity(chain, entity) < 0) 1622 return -EINVAL; 1623 1624 /* Forward scan */ 1625 if (uvc_scan_chain_forward(chain, entity, prev) < 0) 1626 return -EINVAL; 1627 1628 /* Backward scan */ 1629 prev = entity; 1630 if (uvc_scan_chain_backward(chain, &entity) < 0) 1631 return -EINVAL; 1632 } 1633 1634 return 0; 1635 } 1636 1637 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 1638 char *buffer) 1639 { 1640 struct uvc_entity *term; 1641 unsigned int nterms = 0; 1642 char *p = buffer; 1643 1644 list_for_each_entry(term, terms, chain) { 1645 if (!UVC_ENTITY_IS_TERM(term) || 1646 UVC_TERM_DIRECTION(term) != dir) 1647 continue; 1648 1649 if (nterms) 1650 p += sprintf(p, ","); 1651 if (++nterms >= 4) { 1652 p += sprintf(p, "..."); 1653 break; 1654 } 1655 p += sprintf(p, "%u", term->id); 1656 } 1657 1658 return p - buffer; 1659 } 1660 1661 static const char *uvc_print_chain(struct uvc_video_chain *chain) 1662 { 1663 static char buffer[43]; 1664 char *p = buffer; 1665 1666 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 1667 p += sprintf(p, " -> "); 1668 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 1669 1670 return buffer; 1671 } 1672 1673 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) 1674 { 1675 struct uvc_video_chain *chain; 1676 1677 chain = kzalloc(sizeof(*chain), GFP_KERNEL); 1678 if (chain == NULL) 1679 return NULL; 1680 1681 INIT_LIST_HEAD(&chain->entities); 1682 mutex_init(&chain->ctrl_mutex); 1683 chain->dev = dev; 1684 v4l2_prio_init(&chain->prio); 1685 1686 return chain; 1687 } 1688 1689 /* 1690 * Fallback heuristic for devices that don't connect units and terminals in a 1691 * valid chain. 1692 * 1693 * Some devices have invalid baSourceID references, causing uvc_scan_chain() 1694 * to fail, but if we just take the entities we can find and put them together 1695 * in the most sensible chain we can think of, turns out they do work anyway. 1696 * Note: This heuristic assumes there is a single chain. 1697 * 1698 * At the time of writing, devices known to have such a broken chain are 1699 * - Acer Integrated Camera (5986:055a) 1700 * - Realtek rtl157a7 (0bda:57a7) 1701 */ 1702 static int uvc_scan_fallback(struct uvc_device *dev) 1703 { 1704 struct uvc_video_chain *chain; 1705 struct uvc_entity *iterm = NULL; 1706 struct uvc_entity *oterm = NULL; 1707 struct uvc_entity *entity; 1708 struct uvc_entity *prev; 1709 1710 /* 1711 * Start by locating the input and output terminals. We only support 1712 * devices with exactly one of each for now. 1713 */ 1714 list_for_each_entry(entity, &dev->entities, list) { 1715 if (UVC_ENTITY_IS_ITERM(entity)) { 1716 if (iterm) 1717 return -EINVAL; 1718 iterm = entity; 1719 } 1720 1721 if (UVC_ENTITY_IS_OTERM(entity)) { 1722 if (oterm) 1723 return -EINVAL; 1724 oterm = entity; 1725 } 1726 } 1727 1728 if (iterm == NULL || oterm == NULL) 1729 return -EINVAL; 1730 1731 /* Allocate the chain and fill it. */ 1732 chain = uvc_alloc_chain(dev); 1733 if (chain == NULL) 1734 return -ENOMEM; 1735 1736 if (uvc_scan_chain_entity(chain, oterm) < 0) 1737 goto error; 1738 1739 prev = oterm; 1740 1741 /* 1742 * Add all Processing and Extension Units with two pads. The order 1743 * doesn't matter much, use reverse list traversal to connect units in 1744 * UVC descriptor order as we build the chain from output to input. This 1745 * leads to units appearing in the order meant by the manufacturer for 1746 * the cameras known to require this heuristic. 1747 */ 1748 list_for_each_entry_reverse(entity, &dev->entities, list) { 1749 if (entity->type != UVC_VC_PROCESSING_UNIT && 1750 entity->type != UVC_VC_EXTENSION_UNIT) 1751 continue; 1752 1753 if (entity->num_pads != 2) 1754 continue; 1755 1756 if (uvc_scan_chain_entity(chain, entity) < 0) 1757 goto error; 1758 1759 prev->baSourceID[0] = entity->id; 1760 prev = entity; 1761 } 1762 1763 if (uvc_scan_chain_entity(chain, iterm) < 0) 1764 goto error; 1765 1766 prev->baSourceID[0] = iterm->id; 1767 1768 list_add_tail(&chain->list, &dev->chains); 1769 1770 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n", 1771 uvc_print_chain(chain)); 1772 1773 return 0; 1774 1775 error: 1776 kfree(chain); 1777 return -EINVAL; 1778 } 1779 1780 /* 1781 * Scan the device for video chains and register video devices. 1782 * 1783 * Chains are scanned starting at their output terminals and walked backwards. 1784 */ 1785 static int uvc_scan_device(struct uvc_device *dev) 1786 { 1787 struct uvc_video_chain *chain; 1788 struct uvc_entity *term; 1789 1790 list_for_each_entry(term, &dev->entities, list) { 1791 if (!UVC_ENTITY_IS_OTERM(term)) 1792 continue; 1793 1794 /* 1795 * If the terminal is already included in a chain, skip it. 1796 * This can happen for chains that have multiple output 1797 * terminals, where all output terminals beside the first one 1798 * will be inserted in the chain in forward scans. 1799 */ 1800 if (term->chain.next || term->chain.prev) 1801 continue; 1802 1803 chain = uvc_alloc_chain(dev); 1804 if (chain == NULL) 1805 return -ENOMEM; 1806 1807 term->flags |= UVC_ENTITY_FLAG_DEFAULT; 1808 1809 if (uvc_scan_chain(chain, term) < 0) { 1810 kfree(chain); 1811 continue; 1812 } 1813 1814 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n", 1815 uvc_print_chain(chain)); 1816 1817 list_add_tail(&chain->list, &dev->chains); 1818 } 1819 1820 if (list_empty(&dev->chains)) 1821 uvc_scan_fallback(dev); 1822 1823 if (list_empty(&dev->chains)) { 1824 dev_info(&dev->udev->dev, "No valid video chain found.\n"); 1825 return -1; 1826 } 1827 1828 /* Add GPIO entity to the first chain. */ 1829 if (dev->gpio_unit) { 1830 chain = list_first_entry(&dev->chains, 1831 struct uvc_video_chain, list); 1832 list_add_tail(&dev->gpio_unit->chain, &chain->entities); 1833 } 1834 1835 return 0; 1836 } 1837 1838 /* ------------------------------------------------------------------------ 1839 * Video device registration and unregistration 1840 */ 1841 1842 /* 1843 * Delete the UVC device. 1844 * 1845 * Called by the kernel when the last reference to the uvc_device structure 1846 * is released. 1847 * 1848 * As this function is called after or during disconnect(), all URBs have 1849 * already been cancelled by the USB core. There is no need to kill the 1850 * interrupt URB manually. 1851 */ 1852 static void uvc_delete(struct kref *kref) 1853 { 1854 struct uvc_device *dev = container_of(kref, struct uvc_device, ref); 1855 struct list_head *p, *n; 1856 1857 uvc_status_cleanup(dev); 1858 uvc_ctrl_cleanup_device(dev); 1859 1860 usb_put_intf(dev->intf); 1861 usb_put_dev(dev->udev); 1862 1863 #ifdef CONFIG_MEDIA_CONTROLLER 1864 media_device_cleanup(&dev->mdev); 1865 #endif 1866 1867 list_for_each_safe(p, n, &dev->chains) { 1868 struct uvc_video_chain *chain; 1869 1870 chain = list_entry(p, struct uvc_video_chain, list); 1871 kfree(chain); 1872 } 1873 1874 list_for_each_safe(p, n, &dev->entities) { 1875 struct uvc_entity *entity; 1876 1877 entity = list_entry(p, struct uvc_entity, list); 1878 #ifdef CONFIG_MEDIA_CONTROLLER 1879 uvc_mc_cleanup_entity(entity); 1880 #endif 1881 kfree(entity); 1882 } 1883 1884 list_for_each_safe(p, n, &dev->streams) { 1885 struct uvc_streaming *streaming; 1886 1887 streaming = list_entry(p, struct uvc_streaming, list); 1888 usb_driver_release_interface(&uvc_driver.driver, 1889 streaming->intf); 1890 uvc_stream_delete(streaming); 1891 } 1892 1893 kfree(dev); 1894 } 1895 1896 static void uvc_release(struct video_device *vdev) 1897 { 1898 struct uvc_streaming *stream = video_get_drvdata(vdev); 1899 struct uvc_device *dev = stream->dev; 1900 1901 kref_put(&dev->ref, uvc_delete); 1902 } 1903 1904 /* 1905 * Unregister the video devices. 1906 */ 1907 static void uvc_unregister_video(struct uvc_device *dev) 1908 { 1909 struct uvc_streaming *stream; 1910 1911 list_for_each_entry(stream, &dev->streams, list) { 1912 if (!video_is_registered(&stream->vdev)) 1913 continue; 1914 1915 video_unregister_device(&stream->vdev); 1916 video_unregister_device(&stream->meta.vdev); 1917 1918 uvc_debugfs_cleanup_stream(stream); 1919 } 1920 1921 uvc_status_unregister(dev); 1922 1923 if (dev->vdev.dev) 1924 v4l2_device_unregister(&dev->vdev); 1925 #ifdef CONFIG_MEDIA_CONTROLLER 1926 if (media_devnode_is_registered(dev->mdev.devnode)) 1927 media_device_unregister(&dev->mdev); 1928 #endif 1929 } 1930 1931 int uvc_register_video_device(struct uvc_device *dev, 1932 struct uvc_streaming *stream, 1933 struct video_device *vdev, 1934 struct uvc_video_queue *queue, 1935 enum v4l2_buf_type type, 1936 const struct v4l2_file_operations *fops, 1937 const struct v4l2_ioctl_ops *ioctl_ops) 1938 { 1939 int ret; 1940 1941 /* Initialize the video buffers queue. */ 1942 ret = uvc_queue_init(queue, type, !uvc_no_drop_param); 1943 if (ret) 1944 return ret; 1945 1946 /* Register the device with V4L. */ 1947 1948 /* 1949 * We already hold a reference to dev->udev. The video device will be 1950 * unregistered before the reference is released, so we don't need to 1951 * get another one. 1952 */ 1953 vdev->v4l2_dev = &dev->vdev; 1954 vdev->fops = fops; 1955 vdev->ioctl_ops = ioctl_ops; 1956 vdev->release = uvc_release; 1957 vdev->prio = &stream->chain->prio; 1958 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 1959 vdev->vfl_dir = VFL_DIR_TX; 1960 else 1961 vdev->vfl_dir = VFL_DIR_RX; 1962 1963 switch (type) { 1964 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1965 default: 1966 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1967 break; 1968 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1969 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 1970 break; 1971 case V4L2_BUF_TYPE_META_CAPTURE: 1972 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; 1973 break; 1974 } 1975 1976 strscpy(vdev->name, dev->name, sizeof(vdev->name)); 1977 1978 /* 1979 * Set the driver data before calling video_register_device, otherwise 1980 * the file open() handler might race us. 1981 */ 1982 video_set_drvdata(vdev, stream); 1983 1984 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); 1985 if (ret < 0) { 1986 dev_err(&stream->intf->dev, 1987 "Failed to register %s device (%d).\n", 1988 v4l2_type_names[type], ret); 1989 return ret; 1990 } 1991 1992 kref_get(&dev->ref); 1993 return 0; 1994 } 1995 1996 static int uvc_register_video(struct uvc_device *dev, 1997 struct uvc_streaming *stream) 1998 { 1999 int ret; 2000 2001 /* Initialize the streaming interface with default parameters. */ 2002 ret = uvc_video_init(stream); 2003 if (ret < 0) { 2004 dev_err(&stream->intf->dev, 2005 "Failed to initialize the device (%d).\n", ret); 2006 return ret; 2007 } 2008 2009 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 2010 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE 2011 | V4L2_CAP_META_CAPTURE; 2012 else 2013 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; 2014 2015 uvc_debugfs_init_stream(stream); 2016 2017 /* Register the device with V4L. */ 2018 return uvc_register_video_device(dev, stream, &stream->vdev, 2019 &stream->queue, stream->type, 2020 &uvc_fops, &uvc_ioctl_ops); 2021 } 2022 2023 /* 2024 * Register all video devices in all chains. 2025 */ 2026 static int uvc_register_terms(struct uvc_device *dev, 2027 struct uvc_video_chain *chain) 2028 { 2029 struct uvc_streaming *stream; 2030 struct uvc_entity *term; 2031 int ret; 2032 2033 list_for_each_entry(term, &chain->entities, chain) { 2034 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 2035 continue; 2036 2037 stream = uvc_stream_by_id(dev, term->id); 2038 if (stream == NULL) { 2039 dev_info(&dev->udev->dev, 2040 "No streaming interface found for terminal %u.", 2041 term->id); 2042 continue; 2043 } 2044 2045 stream->chain = chain; 2046 ret = uvc_register_video(dev, stream); 2047 if (ret < 0) 2048 return ret; 2049 2050 /* 2051 * Register a metadata node, but ignore a possible failure, 2052 * complete registration of video nodes anyway. 2053 */ 2054 uvc_meta_register(stream); 2055 2056 term->vdev = &stream->vdev; 2057 } 2058 2059 return 0; 2060 } 2061 2062 static int uvc_register_chains(struct uvc_device *dev) 2063 { 2064 struct uvc_video_chain *chain; 2065 int ret; 2066 2067 list_for_each_entry(chain, &dev->chains, list) { 2068 ret = uvc_register_terms(dev, chain); 2069 if (ret < 0) 2070 return ret; 2071 2072 #ifdef CONFIG_MEDIA_CONTROLLER 2073 ret = uvc_mc_register_entities(chain); 2074 if (ret < 0) 2075 dev_info(&dev->udev->dev, 2076 "Failed to register entities (%d).\n", ret); 2077 #endif 2078 } 2079 2080 return 0; 2081 } 2082 2083 /* ------------------------------------------------------------------------ 2084 * USB probe, disconnect, suspend and resume 2085 */ 2086 2087 static const struct uvc_device_info uvc_quirk_none = { 0 }; 2088 2089 static int uvc_probe(struct usb_interface *intf, 2090 const struct usb_device_id *id) 2091 { 2092 struct usb_device *udev = interface_to_usbdev(intf); 2093 struct uvc_device *dev; 2094 const struct uvc_device_info *info = 2095 (const struct uvc_device_info *)id->driver_info; 2096 int function; 2097 int ret; 2098 2099 /* Allocate memory for the device and initialize it. */ 2100 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2101 if (dev == NULL) 2102 return -ENOMEM; 2103 2104 INIT_LIST_HEAD(&dev->entities); 2105 INIT_LIST_HEAD(&dev->chains); 2106 INIT_LIST_HEAD(&dev->streams); 2107 kref_init(&dev->ref); 2108 atomic_set(&dev->nmappings, 0); 2109 mutex_init(&dev->lock); 2110 2111 dev->udev = usb_get_dev(udev); 2112 dev->intf = usb_get_intf(intf); 2113 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 2114 dev->info = info ? info : &uvc_quirk_none; 2115 dev->quirks = uvc_quirks_param == -1 2116 ? dev->info->quirks : uvc_quirks_param; 2117 2118 if (id->idVendor && id->idProduct) 2119 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n", 2120 udev->devpath, id->idVendor, id->idProduct); 2121 else 2122 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n", 2123 udev->devpath); 2124 2125 if (udev->product != NULL) 2126 strscpy(dev->name, udev->product, sizeof(dev->name)); 2127 else 2128 snprintf(dev->name, sizeof(dev->name), 2129 "UVC Camera (%04x:%04x)", 2130 le16_to_cpu(udev->descriptor.idVendor), 2131 le16_to_cpu(udev->descriptor.idProduct)); 2132 2133 /* 2134 * Add iFunction or iInterface to names when available as additional 2135 * distinguishers between interfaces. iFunction is prioritized over 2136 * iInterface which matches Windows behavior at the point of writing. 2137 */ 2138 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0) 2139 function = intf->intf_assoc->iFunction; 2140 else 2141 function = intf->cur_altsetting->desc.iInterface; 2142 if (function != 0) { 2143 size_t len; 2144 2145 strlcat(dev->name, ": ", sizeof(dev->name)); 2146 len = strlen(dev->name); 2147 usb_string(udev, function, dev->name + len, 2148 sizeof(dev->name) - len); 2149 } 2150 2151 /* Initialize the media device. */ 2152 #ifdef CONFIG_MEDIA_CONTROLLER 2153 dev->mdev.dev = &intf->dev; 2154 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); 2155 if (udev->serial) 2156 strscpy(dev->mdev.serial, udev->serial, 2157 sizeof(dev->mdev.serial)); 2158 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info)); 2159 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 2160 media_device_init(&dev->mdev); 2161 2162 dev->vdev.mdev = &dev->mdev; 2163 #endif 2164 2165 /* Parse the Video Class control descriptor. */ 2166 if (uvc_parse_control(dev) < 0) { 2167 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n"); 2168 goto error; 2169 } 2170 2171 /* Parse the associated GPIOs. */ 2172 if (uvc_gpio_parse(dev) < 0) { 2173 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n"); 2174 goto error; 2175 } 2176 2177 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", 2178 dev->uvc_version >> 8, dev->uvc_version & 0xff, 2179 udev->product ? udev->product : "<unnamed>", 2180 le16_to_cpu(udev->descriptor.idVendor), 2181 le16_to_cpu(udev->descriptor.idProduct)); 2182 2183 if (dev->quirks != dev->info->quirks) { 2184 dev_info(&dev->udev->dev, 2185 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n", 2186 dev->quirks); 2187 dev_info(&dev->udev->dev, 2188 "Please report required quirks to the linux-media mailing list.\n"); 2189 } 2190 2191 if (dev->info->uvc_version) { 2192 dev->uvc_version = dev->info->uvc_version; 2193 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n", 2194 dev->uvc_version >> 8, dev->uvc_version & 0xff); 2195 } 2196 2197 /* Register the V4L2 device. */ 2198 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) 2199 goto error; 2200 2201 /* Scan the device for video chains. */ 2202 if (uvc_scan_device(dev) < 0) 2203 goto error; 2204 2205 /* Initialize controls. */ 2206 if (uvc_ctrl_init_device(dev) < 0) 2207 goto error; 2208 2209 /* Register video device nodes. */ 2210 if (uvc_register_chains(dev) < 0) 2211 goto error; 2212 2213 #ifdef CONFIG_MEDIA_CONTROLLER 2214 /* Register the media device node */ 2215 if (media_device_register(&dev->mdev) < 0) 2216 goto error; 2217 #endif 2218 /* Save our data pointer in the interface data. */ 2219 usb_set_intfdata(intf, dev); 2220 2221 /* Initialize the interrupt URB. */ 2222 ret = uvc_status_init(dev); 2223 if (ret < 0) { 2224 dev_info(&dev->udev->dev, 2225 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n", 2226 ret); 2227 } 2228 2229 ret = uvc_gpio_init_irq(dev); 2230 if (ret < 0) { 2231 dev_err(&dev->udev->dev, 2232 "Unable to request privacy GPIO IRQ (%d)\n", ret); 2233 goto error; 2234 } 2235 2236 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME) 2237 udev->quirks &= ~USB_QUIRK_RESET_RESUME; 2238 2239 uvc_dbg(dev, PROBE, "UVC device initialized\n"); 2240 usb_enable_autosuspend(udev); 2241 return 0; 2242 2243 error: 2244 uvc_unregister_video(dev); 2245 kref_put(&dev->ref, uvc_delete); 2246 return -ENODEV; 2247 } 2248 2249 static void uvc_disconnect(struct usb_interface *intf) 2250 { 2251 struct uvc_device *dev = usb_get_intfdata(intf); 2252 2253 /* 2254 * Set the USB interface data to NULL. This can be done outside the 2255 * lock, as there's no other reader. 2256 */ 2257 usb_set_intfdata(intf, NULL); 2258 2259 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2260 UVC_SC_VIDEOSTREAMING) 2261 return; 2262 2263 uvc_unregister_video(dev); 2264 kref_put(&dev->ref, uvc_delete); 2265 } 2266 2267 static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 2268 { 2269 struct uvc_device *dev = usb_get_intfdata(intf); 2270 struct uvc_streaming *stream; 2271 2272 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n", 2273 intf->cur_altsetting->desc.bInterfaceNumber); 2274 2275 /* Controls are cached on the fly so they don't need to be saved. */ 2276 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2277 UVC_SC_VIDEOCONTROL) { 2278 mutex_lock(&dev->lock); 2279 if (dev->users) 2280 uvc_status_stop(dev); 2281 mutex_unlock(&dev->lock); 2282 return 0; 2283 } 2284 2285 list_for_each_entry(stream, &dev->streams, list) { 2286 if (stream->intf == intf) 2287 return uvc_video_suspend(stream); 2288 } 2289 2290 uvc_dbg(dev, SUSPEND, 2291 "Suspend: video streaming USB interface mismatch\n"); 2292 return -EINVAL; 2293 } 2294 2295 static int __uvc_resume(struct usb_interface *intf, int reset) 2296 { 2297 struct uvc_device *dev = usb_get_intfdata(intf); 2298 struct uvc_streaming *stream; 2299 int ret = 0; 2300 2301 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n", 2302 intf->cur_altsetting->desc.bInterfaceNumber); 2303 2304 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2305 UVC_SC_VIDEOCONTROL) { 2306 if (reset) { 2307 ret = uvc_ctrl_restore_values(dev); 2308 if (ret < 0) 2309 return ret; 2310 } 2311 2312 mutex_lock(&dev->lock); 2313 if (dev->users) 2314 ret = uvc_status_start(dev, GFP_NOIO); 2315 mutex_unlock(&dev->lock); 2316 2317 return ret; 2318 } 2319 2320 list_for_each_entry(stream, &dev->streams, list) { 2321 if (stream->intf == intf) { 2322 ret = uvc_video_resume(stream, reset); 2323 if (ret < 0) 2324 uvc_queue_streamoff(&stream->queue, 2325 stream->queue.queue.type); 2326 return ret; 2327 } 2328 } 2329 2330 uvc_dbg(dev, SUSPEND, 2331 "Resume: video streaming USB interface mismatch\n"); 2332 return -EINVAL; 2333 } 2334 2335 static int uvc_resume(struct usb_interface *intf) 2336 { 2337 return __uvc_resume(intf, 0); 2338 } 2339 2340 static int uvc_reset_resume(struct usb_interface *intf) 2341 { 2342 return __uvc_resume(intf, 1); 2343 } 2344 2345 /* ------------------------------------------------------------------------ 2346 * Module parameters 2347 */ 2348 2349 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) 2350 { 2351 if (uvc_clock_param == CLOCK_MONOTONIC) 2352 return sprintf(buffer, "CLOCK_MONOTONIC"); 2353 else 2354 return sprintf(buffer, "CLOCK_REALTIME"); 2355 } 2356 2357 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) 2358 { 2359 if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 2360 val += strlen("clock_"); 2361 2362 if (strcasecmp(val, "monotonic") == 0) 2363 uvc_clock_param = CLOCK_MONOTONIC; 2364 else if (strcasecmp(val, "realtime") == 0) 2365 uvc_clock_param = CLOCK_REALTIME; 2366 else 2367 return -EINVAL; 2368 2369 return 0; 2370 } 2371 2372 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 2373 &uvc_clock_param, 0644); 2374 MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 2375 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644); 2376 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); 2377 module_param_named(nodrop, uvc_no_drop_param, uint, 0644); 2378 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 2379 module_param_named(quirks, uvc_quirks_param, uint, 0644); 2380 MODULE_PARM_DESC(quirks, "Forced device quirks"); 2381 module_param_named(trace, uvc_dbg_param, uint, 0644); 2382 MODULE_PARM_DESC(trace, "Trace level bitmask"); 2383 module_param_named(timeout, uvc_timeout_param, uint, 0644); 2384 MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 2385 2386 /* ------------------------------------------------------------------------ 2387 * Driver initialization and cleanup 2388 */ 2389 2390 static const struct uvc_device_info uvc_ctrl_power_line_limited = { 2391 .mappings = (const struct uvc_control_mapping *[]) { 2392 &uvc_ctrl_power_line_mapping_limited, 2393 NULL, /* Sentinel */ 2394 }, 2395 }; 2396 2397 static const struct uvc_device_info uvc_ctrl_power_line_uvc11 = { 2398 .mappings = (const struct uvc_control_mapping *[]) { 2399 &uvc_ctrl_power_line_mapping_uvc11, 2400 NULL, /* Sentinel */ 2401 }, 2402 }; 2403 2404 static const struct uvc_device_info uvc_quirk_probe_minmax = { 2405 .quirks = UVC_QUIRK_PROBE_MINMAX, 2406 }; 2407 2408 static const struct uvc_device_info uvc_quirk_fix_bandwidth = { 2409 .quirks = UVC_QUIRK_FIX_BANDWIDTH, 2410 }; 2411 2412 static const struct uvc_device_info uvc_quirk_probe_def = { 2413 .quirks = UVC_QUIRK_PROBE_DEF, 2414 }; 2415 2416 static const struct uvc_device_info uvc_quirk_stream_no_fid = { 2417 .quirks = UVC_QUIRK_STREAM_NO_FID, 2418 }; 2419 2420 static const struct uvc_device_info uvc_quirk_force_y8 = { 2421 .quirks = UVC_QUIRK_FORCE_Y8, 2422 }; 2423 2424 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q} 2425 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \ 2426 {.meta_format = m} 2427 2428 /* 2429 * The Logitech cameras listed below have their interface class set to 2430 * VENDOR_SPEC because they don't announce themselves as UVC devices, even 2431 * though they are compliant. 2432 */ 2433 static const struct usb_device_id uvc_ids[] = { 2434 /* Quanta USB2.0 HD UVC Webcam */ 2435 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2436 | USB_DEVICE_ID_MATCH_INT_INFO, 2437 .idVendor = 0x0408, 2438 .idProduct = 0x3090, 2439 .bInterfaceClass = USB_CLASS_VIDEO, 2440 .bInterfaceSubClass = 1, 2441 .bInterfaceProtocol = 0, 2442 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 2443 /* Quanta USB2.0 HD UVC Webcam */ 2444 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2445 | USB_DEVICE_ID_MATCH_INT_INFO, 2446 .idVendor = 0x0408, 2447 .idProduct = 0x4030, 2448 .bInterfaceClass = USB_CLASS_VIDEO, 2449 .bInterfaceSubClass = 1, 2450 .bInterfaceProtocol = 0, 2451 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 2452 /* Quanta USB2.0 HD UVC Webcam */ 2453 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2454 | USB_DEVICE_ID_MATCH_INT_INFO, 2455 .idVendor = 0x0408, 2456 .idProduct = 0x4034, 2457 .bInterfaceClass = USB_CLASS_VIDEO, 2458 .bInterfaceSubClass = 1, 2459 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2460 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 2461 /* LogiLink Wireless Webcam */ 2462 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2463 | USB_DEVICE_ID_MATCH_INT_INFO, 2464 .idVendor = 0x0416, 2465 .idProduct = 0xa91a, 2466 .bInterfaceClass = USB_CLASS_VIDEO, 2467 .bInterfaceSubClass = 1, 2468 .bInterfaceProtocol = 0, 2469 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2470 /* Genius eFace 2025 */ 2471 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2472 | USB_DEVICE_ID_MATCH_INT_INFO, 2473 .idVendor = 0x0458, 2474 .idProduct = 0x706e, 2475 .bInterfaceClass = USB_CLASS_VIDEO, 2476 .bInterfaceSubClass = 1, 2477 .bInterfaceProtocol = 0, 2478 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2479 /* Microsoft Lifecam NX-6000 */ 2480 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2481 | USB_DEVICE_ID_MATCH_INT_INFO, 2482 .idVendor = 0x045e, 2483 .idProduct = 0x00f8, 2484 .bInterfaceClass = USB_CLASS_VIDEO, 2485 .bInterfaceSubClass = 1, 2486 .bInterfaceProtocol = 0, 2487 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2488 /* Microsoft Lifecam NX-3000 */ 2489 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2490 | USB_DEVICE_ID_MATCH_INT_INFO, 2491 .idVendor = 0x045e, 2492 .idProduct = 0x0721, 2493 .bInterfaceClass = USB_CLASS_VIDEO, 2494 .bInterfaceSubClass = 1, 2495 .bInterfaceProtocol = 0, 2496 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2497 /* Microsoft Lifecam VX-7000 */ 2498 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2499 | USB_DEVICE_ID_MATCH_INT_INFO, 2500 .idVendor = 0x045e, 2501 .idProduct = 0x0723, 2502 .bInterfaceClass = USB_CLASS_VIDEO, 2503 .bInterfaceSubClass = 1, 2504 .bInterfaceProtocol = 0, 2505 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2506 /* Logitech, Webcam C910 */ 2507 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2508 | USB_DEVICE_ID_MATCH_INT_INFO, 2509 .idVendor = 0x046d, 2510 .idProduct = 0x0821, 2511 .bInterfaceClass = USB_CLASS_VIDEO, 2512 .bInterfaceSubClass = 1, 2513 .bInterfaceProtocol = 0, 2514 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2515 /* Logitech, Webcam B910 */ 2516 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2517 | USB_DEVICE_ID_MATCH_INT_INFO, 2518 .idVendor = 0x046d, 2519 .idProduct = 0x0823, 2520 .bInterfaceClass = USB_CLASS_VIDEO, 2521 .bInterfaceSubClass = 1, 2522 .bInterfaceProtocol = 0, 2523 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2524 /* Logitech Quickcam Fusion */ 2525 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2526 | USB_DEVICE_ID_MATCH_INT_INFO, 2527 .idVendor = 0x046d, 2528 .idProduct = 0x08c1, 2529 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2530 .bInterfaceSubClass = 1, 2531 .bInterfaceProtocol = 0 }, 2532 /* Logitech Quickcam Orbit MP */ 2533 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2534 | USB_DEVICE_ID_MATCH_INT_INFO, 2535 .idVendor = 0x046d, 2536 .idProduct = 0x08c2, 2537 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2538 .bInterfaceSubClass = 1, 2539 .bInterfaceProtocol = 0 }, 2540 /* Logitech Quickcam Pro for Notebook */ 2541 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2542 | USB_DEVICE_ID_MATCH_INT_INFO, 2543 .idVendor = 0x046d, 2544 .idProduct = 0x08c3, 2545 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2546 .bInterfaceSubClass = 1, 2547 .bInterfaceProtocol = 0 }, 2548 /* Logitech Quickcam Pro 5000 */ 2549 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2550 | USB_DEVICE_ID_MATCH_INT_INFO, 2551 .idVendor = 0x046d, 2552 .idProduct = 0x08c5, 2553 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2554 .bInterfaceSubClass = 1, 2555 .bInterfaceProtocol = 0 }, 2556 /* Logitech Quickcam OEM Dell Notebook */ 2557 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2558 | USB_DEVICE_ID_MATCH_INT_INFO, 2559 .idVendor = 0x046d, 2560 .idProduct = 0x08c6, 2561 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2562 .bInterfaceSubClass = 1, 2563 .bInterfaceProtocol = 0 }, 2564 /* Logitech Quickcam OEM Cisco VT Camera II */ 2565 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2566 | USB_DEVICE_ID_MATCH_INT_INFO, 2567 .idVendor = 0x046d, 2568 .idProduct = 0x08c7, 2569 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2570 .bInterfaceSubClass = 1, 2571 .bInterfaceProtocol = 0 }, 2572 /* Logitech HD Pro Webcam C920 */ 2573 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2574 | USB_DEVICE_ID_MATCH_INT_INFO, 2575 .idVendor = 0x046d, 2576 .idProduct = 0x082d, 2577 .bInterfaceClass = USB_CLASS_VIDEO, 2578 .bInterfaceSubClass = 1, 2579 .bInterfaceProtocol = 0, 2580 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) }, 2581 /* Logitech Rally Bar Huddle */ 2582 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2583 | USB_DEVICE_ID_MATCH_INT_INFO, 2584 .idVendor = 0x046d, 2585 .idProduct = 0x087c, 2586 .bInterfaceClass = USB_CLASS_VIDEO, 2587 .bInterfaceSubClass = 1, 2588 .bInterfaceProtocol = 0, 2589 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2590 /* Logitech Rally Bar */ 2591 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2592 | USB_DEVICE_ID_MATCH_INT_INFO, 2593 .idVendor = 0x046d, 2594 .idProduct = 0x089b, 2595 .bInterfaceClass = USB_CLASS_VIDEO, 2596 .bInterfaceSubClass = 1, 2597 .bInterfaceProtocol = 0, 2598 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2599 /* Logitech Rally Bar Mini */ 2600 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2601 | USB_DEVICE_ID_MATCH_INT_INFO, 2602 .idVendor = 0x046d, 2603 .idProduct = 0x08d3, 2604 .bInterfaceClass = USB_CLASS_VIDEO, 2605 .bInterfaceSubClass = 1, 2606 .bInterfaceProtocol = 0, 2607 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2608 /* Chicony CNF7129 (Asus EEE 100HE) */ 2609 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2610 | USB_DEVICE_ID_MATCH_INT_INFO, 2611 .idVendor = 0x04f2, 2612 .idProduct = 0xb071, 2613 .bInterfaceClass = USB_CLASS_VIDEO, 2614 .bInterfaceSubClass = 1, 2615 .bInterfaceProtocol = 0, 2616 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) }, 2617 /* Chicony EasyCamera */ 2618 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2619 | USB_DEVICE_ID_MATCH_INT_INFO, 2620 .idVendor = 0x04f2, 2621 .idProduct = 0xb5eb, 2622 .bInterfaceClass = USB_CLASS_VIDEO, 2623 .bInterfaceSubClass = 1, 2624 .bInterfaceProtocol = 0, 2625 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 2626 /* Chicony Electronics Co., Ltd Integrated Camera */ 2627 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2628 | USB_DEVICE_ID_MATCH_INT_INFO, 2629 .idVendor = 0x04f2, 2630 .idProduct = 0xb67c, 2631 .bInterfaceClass = USB_CLASS_VIDEO, 2632 .bInterfaceSubClass = 1, 2633 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2634 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 }, 2635 /* Chicony EasyCamera */ 2636 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2637 | USB_DEVICE_ID_MATCH_INT_INFO, 2638 .idVendor = 0x04f2, 2639 .idProduct = 0xb6ba, 2640 .bInterfaceClass = USB_CLASS_VIDEO, 2641 .bInterfaceSubClass = 1, 2642 .bInterfaceProtocol = 0, 2643 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 2644 /* Chicony EasyCamera */ 2645 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2646 | USB_DEVICE_ID_MATCH_INT_INFO, 2647 .idVendor = 0x04f2, 2648 .idProduct = 0xb746, 2649 .bInterfaceClass = USB_CLASS_VIDEO, 2650 .bInterfaceSubClass = 1, 2651 .bInterfaceProtocol = 0, 2652 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 2653 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2654 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2655 | USB_DEVICE_ID_MATCH_INT_INFO, 2656 .idVendor = 0x058f, 2657 .idProduct = 0x3820, 2658 .bInterfaceClass = USB_CLASS_VIDEO, 2659 .bInterfaceSubClass = 1, 2660 .bInterfaceProtocol = 0, 2661 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2662 /* Dell XPS m1530 */ 2663 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2664 | USB_DEVICE_ID_MATCH_INT_INFO, 2665 .idVendor = 0x05a9, 2666 .idProduct = 0x2640, 2667 .bInterfaceClass = USB_CLASS_VIDEO, 2668 .bInterfaceSubClass = 1, 2669 .bInterfaceProtocol = 0, 2670 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2671 /* Dell SP2008WFP Monitor */ 2672 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2673 | USB_DEVICE_ID_MATCH_INT_INFO, 2674 .idVendor = 0x05a9, 2675 .idProduct = 0x2641, 2676 .bInterfaceClass = USB_CLASS_VIDEO, 2677 .bInterfaceSubClass = 1, 2678 .bInterfaceProtocol = 0, 2679 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2680 /* Dell Alienware X51 */ 2681 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2682 | USB_DEVICE_ID_MATCH_INT_INFO, 2683 .idVendor = 0x05a9, 2684 .idProduct = 0x2643, 2685 .bInterfaceClass = USB_CLASS_VIDEO, 2686 .bInterfaceSubClass = 1, 2687 .bInterfaceProtocol = 0, 2688 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2689 /* Dell Studio Hybrid 140g (OmniVision webcam) */ 2690 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2691 | USB_DEVICE_ID_MATCH_INT_INFO, 2692 .idVendor = 0x05a9, 2693 .idProduct = 0x264a, 2694 .bInterfaceClass = USB_CLASS_VIDEO, 2695 .bInterfaceSubClass = 1, 2696 .bInterfaceProtocol = 0, 2697 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2698 /* Dell XPS M1330 (OmniVision OV7670 webcam) */ 2699 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2700 | USB_DEVICE_ID_MATCH_INT_INFO, 2701 .idVendor = 0x05a9, 2702 .idProduct = 0x7670, 2703 .bInterfaceClass = USB_CLASS_VIDEO, 2704 .bInterfaceSubClass = 1, 2705 .bInterfaceProtocol = 0, 2706 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2707 /* Apple Built-In iSight */ 2708 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2709 | USB_DEVICE_ID_MATCH_INT_INFO, 2710 .idVendor = 0x05ac, 2711 .idProduct = 0x8501, 2712 .bInterfaceClass = USB_CLASS_VIDEO, 2713 .bInterfaceSubClass = 1, 2714 .bInterfaceProtocol = 0, 2715 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2716 | UVC_QUIRK_BUILTIN_ISIGHT) }, 2717 /* Apple FaceTime HD Camera (Built-In) */ 2718 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2719 | USB_DEVICE_ID_MATCH_INT_INFO, 2720 .idVendor = 0x05ac, 2721 .idProduct = 0x8514, 2722 .bInterfaceClass = USB_CLASS_VIDEO, 2723 .bInterfaceSubClass = 1, 2724 .bInterfaceProtocol = 0, 2725 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2726 /* Apple Built-In iSight via iBridge */ 2727 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2728 | USB_DEVICE_ID_MATCH_INT_INFO, 2729 .idVendor = 0x05ac, 2730 .idProduct = 0x8600, 2731 .bInterfaceClass = USB_CLASS_VIDEO, 2732 .bInterfaceSubClass = 1, 2733 .bInterfaceProtocol = 0, 2734 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2735 /* Foxlink ("HP Webcam" on HP Mini 5103) */ 2736 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2737 | USB_DEVICE_ID_MATCH_INT_INFO, 2738 .idVendor = 0x05c8, 2739 .idProduct = 0x0403, 2740 .bInterfaceClass = USB_CLASS_VIDEO, 2741 .bInterfaceSubClass = 1, 2742 .bInterfaceProtocol = 0, 2743 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2744 /* Genesys Logic USB 2.0 PC Camera */ 2745 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2746 | USB_DEVICE_ID_MATCH_INT_INFO, 2747 .idVendor = 0x05e3, 2748 .idProduct = 0x0505, 2749 .bInterfaceClass = USB_CLASS_VIDEO, 2750 .bInterfaceSubClass = 1, 2751 .bInterfaceProtocol = 0, 2752 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2753 /* Hercules Classic Silver */ 2754 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2755 | USB_DEVICE_ID_MATCH_INT_INFO, 2756 .idVendor = 0x06f8, 2757 .idProduct = 0x300c, 2758 .bInterfaceClass = USB_CLASS_VIDEO, 2759 .bInterfaceSubClass = 1, 2760 .bInterfaceProtocol = 0, 2761 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2762 /* ViMicro Vega */ 2763 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2764 | USB_DEVICE_ID_MATCH_INT_INFO, 2765 .idVendor = 0x0ac8, 2766 .idProduct = 0x332d, 2767 .bInterfaceClass = USB_CLASS_VIDEO, 2768 .bInterfaceSubClass = 1, 2769 .bInterfaceProtocol = 0, 2770 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2771 /* ViMicro - Minoru3D */ 2772 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2773 | USB_DEVICE_ID_MATCH_INT_INFO, 2774 .idVendor = 0x0ac8, 2775 .idProduct = 0x3410, 2776 .bInterfaceClass = USB_CLASS_VIDEO, 2777 .bInterfaceSubClass = 1, 2778 .bInterfaceProtocol = 0, 2779 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2780 /* ViMicro Venus - Minoru3D */ 2781 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2782 | USB_DEVICE_ID_MATCH_INT_INFO, 2783 .idVendor = 0x0ac8, 2784 .idProduct = 0x3420, 2785 .bInterfaceClass = USB_CLASS_VIDEO, 2786 .bInterfaceSubClass = 1, 2787 .bInterfaceProtocol = 0, 2788 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2789 /* Ophir Optronics - SPCAM 620U */ 2790 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2791 | USB_DEVICE_ID_MATCH_INT_INFO, 2792 .idVendor = 0x0bd3, 2793 .idProduct = 0x0555, 2794 .bInterfaceClass = USB_CLASS_VIDEO, 2795 .bInterfaceSubClass = 1, 2796 .bInterfaceProtocol = 0, 2797 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2798 /* MT6227 */ 2799 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2800 | USB_DEVICE_ID_MATCH_INT_INFO, 2801 .idVendor = 0x0e8d, 2802 .idProduct = 0x0004, 2803 .bInterfaceClass = USB_CLASS_VIDEO, 2804 .bInterfaceSubClass = 1, 2805 .bInterfaceProtocol = 0, 2806 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2807 | UVC_QUIRK_PROBE_DEF) }, 2808 /* IMC Networks (Medion Akoya) */ 2809 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2810 | USB_DEVICE_ID_MATCH_INT_INFO, 2811 .idVendor = 0x13d3, 2812 .idProduct = 0x5103, 2813 .bInterfaceClass = USB_CLASS_VIDEO, 2814 .bInterfaceSubClass = 1, 2815 .bInterfaceProtocol = 0, 2816 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2817 /* JMicron USB2.0 XGA WebCam */ 2818 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2819 | USB_DEVICE_ID_MATCH_INT_INFO, 2820 .idVendor = 0x152d, 2821 .idProduct = 0x0310, 2822 .bInterfaceClass = USB_CLASS_VIDEO, 2823 .bInterfaceSubClass = 1, 2824 .bInterfaceProtocol = 0, 2825 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2826 /* Syntek (HP Spartan) */ 2827 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2828 | USB_DEVICE_ID_MATCH_INT_INFO, 2829 .idVendor = 0x174f, 2830 .idProduct = 0x5212, 2831 .bInterfaceClass = USB_CLASS_VIDEO, 2832 .bInterfaceSubClass = 1, 2833 .bInterfaceProtocol = 0, 2834 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2835 /* Syntek (Samsung Q310) */ 2836 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2837 | USB_DEVICE_ID_MATCH_INT_INFO, 2838 .idVendor = 0x174f, 2839 .idProduct = 0x5931, 2840 .bInterfaceClass = USB_CLASS_VIDEO, 2841 .bInterfaceSubClass = 1, 2842 .bInterfaceProtocol = 0, 2843 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2844 /* Syntek (Packard Bell EasyNote MX52 */ 2845 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2846 | USB_DEVICE_ID_MATCH_INT_INFO, 2847 .idVendor = 0x174f, 2848 .idProduct = 0x8a12, 2849 .bInterfaceClass = USB_CLASS_VIDEO, 2850 .bInterfaceSubClass = 1, 2851 .bInterfaceProtocol = 0, 2852 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2853 /* Syntek (Asus F9SG) */ 2854 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2855 | USB_DEVICE_ID_MATCH_INT_INFO, 2856 .idVendor = 0x174f, 2857 .idProduct = 0x8a31, 2858 .bInterfaceClass = USB_CLASS_VIDEO, 2859 .bInterfaceSubClass = 1, 2860 .bInterfaceProtocol = 0, 2861 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2862 /* Syntek (Asus U3S) */ 2863 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2864 | USB_DEVICE_ID_MATCH_INT_INFO, 2865 .idVendor = 0x174f, 2866 .idProduct = 0x8a33, 2867 .bInterfaceClass = USB_CLASS_VIDEO, 2868 .bInterfaceSubClass = 1, 2869 .bInterfaceProtocol = 0, 2870 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2871 /* Syntek (JAOtech Smart Terminal) */ 2872 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2873 | USB_DEVICE_ID_MATCH_INT_INFO, 2874 .idVendor = 0x174f, 2875 .idProduct = 0x8a34, 2876 .bInterfaceClass = USB_CLASS_VIDEO, 2877 .bInterfaceSubClass = 1, 2878 .bInterfaceProtocol = 0, 2879 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2880 /* Miricle 307K */ 2881 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2882 | USB_DEVICE_ID_MATCH_INT_INFO, 2883 .idVendor = 0x17dc, 2884 .idProduct = 0x0202, 2885 .bInterfaceClass = USB_CLASS_VIDEO, 2886 .bInterfaceSubClass = 1, 2887 .bInterfaceProtocol = 0, 2888 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2889 /* Lenovo Thinkpad SL400/SL500 */ 2890 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2891 | USB_DEVICE_ID_MATCH_INT_INFO, 2892 .idVendor = 0x17ef, 2893 .idProduct = 0x480b, 2894 .bInterfaceClass = USB_CLASS_VIDEO, 2895 .bInterfaceSubClass = 1, 2896 .bInterfaceProtocol = 0, 2897 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2898 /* Aveo Technology USB 2.0 Camera */ 2899 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2900 | USB_DEVICE_ID_MATCH_INT_INFO, 2901 .idVendor = 0x1871, 2902 .idProduct = 0x0306, 2903 .bInterfaceClass = USB_CLASS_VIDEO, 2904 .bInterfaceSubClass = 1, 2905 .bInterfaceProtocol = 0, 2906 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2907 | UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2908 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ 2909 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2910 | USB_DEVICE_ID_MATCH_INT_INFO, 2911 .idVendor = 0x1871, 2912 .idProduct = 0x0516, 2913 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2914 .bInterfaceSubClass = 1, 2915 .bInterfaceProtocol = 0 }, 2916 /* Ecamm Pico iMage */ 2917 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2918 | USB_DEVICE_ID_MATCH_INT_INFO, 2919 .idVendor = 0x18cd, 2920 .idProduct = 0xcafe, 2921 .bInterfaceClass = USB_CLASS_VIDEO, 2922 .bInterfaceSubClass = 1, 2923 .bInterfaceProtocol = 0, 2924 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2925 /* Manta MM-353 Plako */ 2926 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2927 | USB_DEVICE_ID_MATCH_INT_INFO, 2928 .idVendor = 0x18ec, 2929 .idProduct = 0x3188, 2930 .bInterfaceClass = USB_CLASS_VIDEO, 2931 .bInterfaceSubClass = 1, 2932 .bInterfaceProtocol = 0, 2933 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2934 /* FSC WebCam V30S */ 2935 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2936 | USB_DEVICE_ID_MATCH_INT_INFO, 2937 .idVendor = 0x18ec, 2938 .idProduct = 0x3288, 2939 .bInterfaceClass = USB_CLASS_VIDEO, 2940 .bInterfaceSubClass = 1, 2941 .bInterfaceProtocol = 0, 2942 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2943 /* Arkmicro unbranded */ 2944 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2945 | USB_DEVICE_ID_MATCH_INT_INFO, 2946 .idVendor = 0x18ec, 2947 .idProduct = 0x3290, 2948 .bInterfaceClass = USB_CLASS_VIDEO, 2949 .bInterfaceSubClass = 1, 2950 .bInterfaceProtocol = 0, 2951 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2952 /* The Imaging Source USB CCD cameras */ 2953 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2954 | USB_DEVICE_ID_MATCH_INT_INFO, 2955 .idVendor = 0x199e, 2956 .idProduct = 0x8102, 2957 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2958 .bInterfaceSubClass = 1, 2959 .bInterfaceProtocol = 0 }, 2960 /* Bodelin ProScopeHR */ 2961 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2962 | USB_DEVICE_ID_MATCH_DEV_HI 2963 | USB_DEVICE_ID_MATCH_INT_INFO, 2964 .idVendor = 0x19ab, 2965 .idProduct = 0x1000, 2966 .bcdDevice_hi = 0x0126, 2967 .bInterfaceClass = USB_CLASS_VIDEO, 2968 .bInterfaceSubClass = 1, 2969 .bInterfaceProtocol = 0, 2970 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) }, 2971 /* MSI StarCam 370i */ 2972 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2973 | USB_DEVICE_ID_MATCH_INT_INFO, 2974 .idVendor = 0x1b3b, 2975 .idProduct = 0x2951, 2976 .bInterfaceClass = USB_CLASS_VIDEO, 2977 .bInterfaceSubClass = 1, 2978 .bInterfaceProtocol = 0, 2979 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2980 /* Generalplus Technology Inc. 808 Camera */ 2981 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2982 | USB_DEVICE_ID_MATCH_INT_INFO, 2983 .idVendor = 0x1b3f, 2984 .idProduct = 0x2002, 2985 .bInterfaceClass = USB_CLASS_VIDEO, 2986 .bInterfaceSubClass = 1, 2987 .bInterfaceProtocol = 0, 2988 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2989 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */ 2990 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2991 | USB_DEVICE_ID_MATCH_INT_INFO, 2992 .idVendor = 0x1bcf, 2993 .idProduct = 0x0b40, 2994 .bInterfaceClass = USB_CLASS_VIDEO, 2995 .bInterfaceSubClass = 1, 2996 .bInterfaceProtocol = 0, 2997 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2998 .uvc_version = 0x010a, 2999 } }, 3000 /* SiGma Micro USB Web Camera */ 3001 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3002 | USB_DEVICE_ID_MATCH_INT_INFO, 3003 .idVendor = 0x1c4f, 3004 .idProduct = 0x3000, 3005 .bInterfaceClass = USB_CLASS_VIDEO, 3006 .bInterfaceSubClass = 1, 3007 .bInterfaceProtocol = 0, 3008 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 3009 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) }, 3010 /* Oculus VR Positional Tracker DK2 */ 3011 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3012 | USB_DEVICE_ID_MATCH_INT_INFO, 3013 .idVendor = 0x2833, 3014 .idProduct = 0x0201, 3015 .bInterfaceClass = USB_CLASS_VIDEO, 3016 .bInterfaceSubClass = 1, 3017 .bInterfaceProtocol = 0, 3018 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3019 /* Oculus VR Rift Sensor */ 3020 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3021 | USB_DEVICE_ID_MATCH_INT_INFO, 3022 .idVendor = 0x2833, 3023 .idProduct = 0x0211, 3024 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3025 .bInterfaceSubClass = 1, 3026 .bInterfaceProtocol = 0, 3027 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3028 /* GEO Semiconductor GC6500 */ 3029 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3030 | USB_DEVICE_ID_MATCH_INT_INFO, 3031 .idVendor = 0x29fe, 3032 .idProduct = 0x4d53, 3033 .bInterfaceClass = USB_CLASS_VIDEO, 3034 .bInterfaceSubClass = 1, 3035 .bInterfaceProtocol = 0, 3036 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) }, 3037 /* SunplusIT Inc HD Camera */ 3038 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3039 | USB_DEVICE_ID_MATCH_INT_INFO, 3040 .idVendor = 0x2b7e, 3041 .idProduct = 0xb752, 3042 .bInterfaceClass = USB_CLASS_VIDEO, 3043 .bInterfaceSubClass = 1, 3044 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 3045 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 }, 3046 /* Lenovo Integrated Camera */ 3047 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3048 | USB_DEVICE_ID_MATCH_INT_INFO, 3049 .idVendor = 0x30c9, 3050 .idProduct = 0x0093, 3051 .bInterfaceClass = USB_CLASS_VIDEO, 3052 .bInterfaceSubClass = 1, 3053 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 3054 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 }, 3055 /* Sonix Technology USB 2.0 Camera */ 3056 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3057 | USB_DEVICE_ID_MATCH_INT_INFO, 3058 .idVendor = 0x3277, 3059 .idProduct = 0x0072, 3060 .bInterfaceClass = USB_CLASS_VIDEO, 3061 .bInterfaceSubClass = 1, 3062 .bInterfaceProtocol = 0, 3063 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 3064 /* Acer EasyCamera */ 3065 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3066 | USB_DEVICE_ID_MATCH_INT_INFO, 3067 .idVendor = 0x5986, 3068 .idProduct = 0x1172, 3069 .bInterfaceClass = USB_CLASS_VIDEO, 3070 .bInterfaceSubClass = 1, 3071 .bInterfaceProtocol = 0, 3072 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 3073 /* Acer EasyCamera */ 3074 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3075 | USB_DEVICE_ID_MATCH_INT_INFO, 3076 .idVendor = 0x5986, 3077 .idProduct = 0x1180, 3078 .bInterfaceClass = USB_CLASS_VIDEO, 3079 .bInterfaceSubClass = 1, 3080 .bInterfaceProtocol = 0, 3081 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited }, 3082 /* Intel D410/ASR depth camera */ 3083 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3084 | USB_DEVICE_ID_MATCH_INT_INFO, 3085 .idVendor = 0x8086, 3086 .idProduct = 0x0ad2, 3087 .bInterfaceClass = USB_CLASS_VIDEO, 3088 .bInterfaceSubClass = 1, 3089 .bInterfaceProtocol = 0, 3090 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3091 /* Intel D415/ASRC depth camera */ 3092 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3093 | USB_DEVICE_ID_MATCH_INT_INFO, 3094 .idVendor = 0x8086, 3095 .idProduct = 0x0ad3, 3096 .bInterfaceClass = USB_CLASS_VIDEO, 3097 .bInterfaceSubClass = 1, 3098 .bInterfaceProtocol = 0, 3099 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3100 /* Intel D430/AWG depth camera */ 3101 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3102 | USB_DEVICE_ID_MATCH_INT_INFO, 3103 .idVendor = 0x8086, 3104 .idProduct = 0x0ad4, 3105 .bInterfaceClass = USB_CLASS_VIDEO, 3106 .bInterfaceSubClass = 1, 3107 .bInterfaceProtocol = 0, 3108 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3109 /* Intel RealSense D4M */ 3110 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3111 | USB_DEVICE_ID_MATCH_INT_INFO, 3112 .idVendor = 0x8086, 3113 .idProduct = 0x0b03, 3114 .bInterfaceClass = USB_CLASS_VIDEO, 3115 .bInterfaceSubClass = 1, 3116 .bInterfaceProtocol = 0, 3117 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3118 /* Intel D435/AWGC depth camera */ 3119 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3120 | USB_DEVICE_ID_MATCH_INT_INFO, 3121 .idVendor = 0x8086, 3122 .idProduct = 0x0b07, 3123 .bInterfaceClass = USB_CLASS_VIDEO, 3124 .bInterfaceSubClass = 1, 3125 .bInterfaceProtocol = 0, 3126 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3127 /* Intel D435i depth camera */ 3128 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3129 | USB_DEVICE_ID_MATCH_INT_INFO, 3130 .idVendor = 0x8086, 3131 .idProduct = 0x0b3a, 3132 .bInterfaceClass = USB_CLASS_VIDEO, 3133 .bInterfaceSubClass = 1, 3134 .bInterfaceProtocol = 0, 3135 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3136 /* Intel D405 Depth Camera */ 3137 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3138 | USB_DEVICE_ID_MATCH_INT_INFO, 3139 .idVendor = 0x8086, 3140 .idProduct = 0x0b5b, 3141 .bInterfaceClass = USB_CLASS_VIDEO, 3142 .bInterfaceSubClass = 1, 3143 .bInterfaceProtocol = 0, 3144 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3145 /* Intel D455 Depth Camera */ 3146 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3147 | USB_DEVICE_ID_MATCH_INT_INFO, 3148 .idVendor = 0x8086, 3149 .idProduct = 0x0b5c, 3150 .bInterfaceClass = USB_CLASS_VIDEO, 3151 .bInterfaceSubClass = 1, 3152 .bInterfaceProtocol = 0, 3153 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3154 /* Generic USB Video Class */ 3155 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, 3156 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, 3157 {} 3158 }; 3159 3160 MODULE_DEVICE_TABLE(usb, uvc_ids); 3161 3162 struct uvc_driver uvc_driver = { 3163 .driver = { 3164 .name = "uvcvideo", 3165 .probe = uvc_probe, 3166 .disconnect = uvc_disconnect, 3167 .suspend = uvc_suspend, 3168 .resume = uvc_resume, 3169 .reset_resume = uvc_reset_resume, 3170 .id_table = uvc_ids, 3171 .supports_autosuspend = 1, 3172 }, 3173 }; 3174 3175 static int __init uvc_init(void) 3176 { 3177 int ret; 3178 3179 uvc_debugfs_init(); 3180 3181 ret = usb_register(&uvc_driver.driver); 3182 if (ret < 0) { 3183 uvc_debugfs_cleanup(); 3184 return ret; 3185 } 3186 3187 return 0; 3188 } 3189 3190 static void __exit uvc_cleanup(void) 3191 { 3192 usb_deregister(&uvc_driver.driver); 3193 uvc_debugfs_cleanup(); 3194 } 3195 3196 module_init(uvc_init); 3197 module_exit(uvc_cleanup); 3198 3199 MODULE_AUTHOR(DRIVER_AUTHOR); 3200 MODULE_DESCRIPTION(DRIVER_DESC); 3201 MODULE_LICENSE("GPL"); 3202 MODULE_VERSION(DRIVER_VERSION); 3203 3204