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 <linux/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 (ftype && 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 /* 691 * Allocate memory for the formats, the frames and the intervals, 692 * plus any required padding to guarantee that everything has the 693 * correct alignment. 694 */ 695 size = nformats * sizeof(*format); 696 size = ALIGN(size, __alignof__(*frame)) + nframes * sizeof(*frame); 697 size = ALIGN(size, __alignof__(*interval)) 698 + nintervals * sizeof(*interval); 699 700 format = kzalloc(size, GFP_KERNEL); 701 if (!format) { 702 ret = -ENOMEM; 703 goto error; 704 } 705 706 frame = (void *)format + nformats * sizeof(*format); 707 frame = PTR_ALIGN(frame, __alignof__(*frame)); 708 interval = (void *)frame + nframes * sizeof(*frame); 709 interval = PTR_ALIGN(interval, __alignof__(*interval)); 710 711 streaming->formats = format; 712 streaming->nformats = 0; 713 714 /* Parse the format descriptors. */ 715 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 716 switch (buffer[2]) { 717 case UVC_VS_FORMAT_UNCOMPRESSED: 718 case UVC_VS_FORMAT_MJPEG: 719 case UVC_VS_FORMAT_DV: 720 case UVC_VS_FORMAT_FRAME_BASED: 721 ret = uvc_parse_format(dev, streaming, format, frame, 722 &interval, buffer, buflen); 723 if (ret < 0) 724 goto error; 725 if (!ret) 726 break; 727 728 streaming->nformats++; 729 frame += format->nframes; 730 format++; 731 732 buflen -= ret; 733 buffer += ret; 734 continue; 735 736 default: 737 break; 738 } 739 740 buflen -= buffer[0]; 741 buffer += buffer[0]; 742 } 743 744 if (buflen) 745 uvc_dbg(dev, DESCR, 746 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n", 747 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 748 749 /* Parse the alternate settings to find the maximum bandwidth. */ 750 for (i = 0; i < intf->num_altsetting; ++i) { 751 struct usb_host_endpoint *ep; 752 753 alts = &intf->altsetting[i]; 754 ep = uvc_find_endpoint(alts, 755 streaming->header.bEndpointAddress); 756 if (ep == NULL) 757 continue; 758 psize = uvc_endpoint_max_bpi(dev->udev, ep); 759 if (psize > streaming->maxpsize) 760 streaming->maxpsize = psize; 761 } 762 763 list_add_tail(&streaming->list, &dev->streams); 764 return 0; 765 766 error: 767 usb_driver_release_interface(&uvc_driver.driver, intf); 768 uvc_stream_delete(streaming); 769 return ret; 770 } 771 772 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA; 773 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER; 774 static const u8 uvc_media_transport_input_guid[16] = 775 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT; 776 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING; 777 778 static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type, 779 u16 id, unsigned int num_pads, 780 unsigned int extra_size) 781 { 782 struct uvc_entity *entity; 783 unsigned int num_inputs; 784 unsigned int size; 785 unsigned int i; 786 787 /* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */ 788 if (id == 0) { 789 dev_err(&dev->udev->dev, "Found Unit with invalid ID 0.\n"); 790 return ERR_PTR(-EINVAL); 791 } 792 793 /* Per UVC 1.1+ spec 3.7.2, the ID is unique. */ 794 if (uvc_entity_by_id(dev, id)) { 795 dev_err(&dev->udev->dev, "Found multiple Units with ID %u\n", id); 796 return ERR_PTR(-EINVAL); 797 } 798 799 extra_size = roundup(extra_size, sizeof(*entity->pads)); 800 if (num_pads) 801 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1; 802 else 803 num_inputs = 0; 804 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads 805 + num_inputs; 806 entity = kzalloc(size, GFP_KERNEL); 807 if (entity == NULL) 808 return ERR_PTR(-ENOMEM); 809 810 entity->id = id; 811 entity->type = type; 812 813 /* 814 * Set the GUID for standard entity types. For extension units, the GUID 815 * is initialized by the caller. 816 */ 817 switch (type) { 818 case UVC_EXT_GPIO_UNIT: 819 memcpy(entity->guid, uvc_gpio_guid, 16); 820 break; 821 case UVC_ITT_CAMERA: 822 memcpy(entity->guid, uvc_camera_guid, 16); 823 break; 824 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 825 memcpy(entity->guid, uvc_media_transport_input_guid, 16); 826 break; 827 case UVC_VC_PROCESSING_UNIT: 828 memcpy(entity->guid, uvc_processing_guid, 16); 829 break; 830 } 831 832 entity->num_links = 0; 833 entity->num_pads = num_pads; 834 entity->pads = ((void *)(entity + 1)) + extra_size; 835 836 for (i = 0; i < num_inputs; ++i) 837 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 838 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads) 839 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; 840 841 entity->bNrInPins = num_inputs; 842 entity->baSourceID = (u8 *)(&entity->pads[num_pads]); 843 844 return entity; 845 } 846 847 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity, 848 const char *type_name, u8 string_id) 849 { 850 int ret; 851 852 /* 853 * First attempt to read the entity name from the device. If the entity 854 * has no associated string, or if reading the string fails (most 855 * likely due to a buggy firmware), fall back to default names based on 856 * the entity type. 857 */ 858 if (string_id) { 859 ret = usb_string(dev->udev, string_id, entity->name, 860 sizeof(entity->name)); 861 if (!ret) 862 return; 863 } 864 865 sprintf(entity->name, "%s %u", type_name, entity->id); 866 } 867 868 /* Parse vendor-specific extensions. */ 869 static int uvc_parse_vendor_control(struct uvc_device *dev, 870 const unsigned char *buffer, int buflen) 871 { 872 struct usb_device *udev = dev->udev; 873 struct usb_host_interface *alts = dev->intf->cur_altsetting; 874 struct uvc_entity *unit; 875 unsigned int n, p; 876 int handled = 0; 877 878 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 879 case 0x046d: /* Logitech */ 880 if (buffer[1] != 0x41 || buffer[2] != 0x01) 881 break; 882 883 /* 884 * Logitech implements several vendor specific functions 885 * through vendor specific extension units (LXU). 886 * 887 * The LXU descriptors are similar to XU descriptors 888 * (see "USB Device Video Class for Video Devices", section 889 * 3.7.2.6 "Extension Unit Descriptor") with the following 890 * differences: 891 * 892 * ---------------------------------------------------------- 893 * 0 bLength 1 Number 894 * Size of this descriptor, in bytes: 24+p+n*2 895 * ---------------------------------------------------------- 896 * 23+p+n bmControlsType N Bitmap 897 * Individual bits in the set are defined: 898 * 0: Absolute 899 * 1: Relative 900 * 901 * This bitset is mapped exactly the same as bmControls. 902 * ---------------------------------------------------------- 903 * 23+p+n*2 bReserved 1 Boolean 904 * ---------------------------------------------------------- 905 * 24+p+n*2 iExtension 1 Index 906 * Index of a string descriptor that describes this 907 * extension unit. 908 * ---------------------------------------------------------- 909 */ 910 p = buflen >= 22 ? buffer[21] : 0; 911 n = buflen >= 25 + p ? buffer[22+p] : 0; 912 913 if (buflen < 25 + p + 2*n) { 914 uvc_dbg(dev, DESCR, 915 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 916 udev->devnum, alts->desc.bInterfaceNumber); 917 break; 918 } 919 920 unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT, 921 buffer[3], p + 1, 2 * n); 922 if (IS_ERR(unit)) 923 return PTR_ERR(unit); 924 925 memcpy(unit->guid, &buffer[4], 16); 926 unit->extension.bNumControls = buffer[20]; 927 memcpy(unit->baSourceID, &buffer[22], p); 928 unit->extension.bControlSize = buffer[22+p]; 929 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 930 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit) 931 + n; 932 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 933 934 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]); 935 936 list_add_tail(&unit->list, &dev->entities); 937 handled = 1; 938 break; 939 } 940 941 return handled; 942 } 943 944 static int uvc_parse_standard_control(struct uvc_device *dev, 945 const unsigned char *buffer, int buflen) 946 { 947 struct usb_device *udev = dev->udev; 948 struct uvc_entity *unit, *term; 949 struct usb_interface *intf; 950 struct usb_host_interface *alts = dev->intf->cur_altsetting; 951 unsigned int i, n, p, len; 952 const char *type_name; 953 u16 type; 954 955 switch (buffer[2]) { 956 case UVC_VC_HEADER: 957 n = buflen >= 12 ? buffer[11] : 0; 958 959 if (buflen < 12 + n) { 960 uvc_dbg(dev, DESCR, 961 "device %d videocontrol interface %d HEADER error\n", 962 udev->devnum, alts->desc.bInterfaceNumber); 963 return -EINVAL; 964 } 965 966 dev->uvc_version = get_unaligned_le16(&buffer[3]); 967 dev->clock_frequency = get_unaligned_le32(&buffer[7]); 968 969 /* Parse all USB Video Streaming interfaces. */ 970 for (i = 0; i < n; ++i) { 971 intf = usb_ifnum_to_if(udev, buffer[12+i]); 972 if (intf == NULL) { 973 uvc_dbg(dev, DESCR, 974 "device %d interface %d doesn't exists\n", 975 udev->devnum, i); 976 continue; 977 } 978 979 uvc_parse_streaming(dev, intf); 980 } 981 break; 982 983 case UVC_VC_INPUT_TERMINAL: 984 if (buflen < 8) { 985 uvc_dbg(dev, DESCR, 986 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 987 udev->devnum, alts->desc.bInterfaceNumber); 988 return -EINVAL; 989 } 990 991 /* 992 * Reject invalid terminal types that would cause issues: 993 * 994 * - The high byte must be non-zero, otherwise it would be 995 * confused with a unit. 996 * 997 * - Bit 15 must be 0, as we use it internally as a terminal 998 * direction flag. 999 * 1000 * Other unknown types are accepted. 1001 */ 1002 type = get_unaligned_le16(&buffer[4]); 1003 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) { 1004 uvc_dbg(dev, DESCR, 1005 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1006 udev->devnum, alts->desc.bInterfaceNumber, 1007 buffer[3], type); 1008 return 0; 1009 } 1010 1011 n = 0; 1012 p = 0; 1013 len = 8; 1014 1015 if (type == UVC_ITT_CAMERA) { 1016 n = buflen >= 15 ? buffer[14] : 0; 1017 len = 15; 1018 1019 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1020 n = buflen >= 9 ? buffer[8] : 0; 1021 p = buflen >= 10 + n ? buffer[9+n] : 0; 1022 len = 10; 1023 } 1024 1025 if (buflen < len + n + p) { 1026 uvc_dbg(dev, DESCR, 1027 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1028 udev->devnum, alts->desc.bInterfaceNumber); 1029 return -EINVAL; 1030 } 1031 1032 term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT, 1033 buffer[3], 1, n + p); 1034 if (IS_ERR(term)) 1035 return PTR_ERR(term); 1036 1037 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 1038 term->camera.bControlSize = n; 1039 term->camera.bmControls = (u8 *)term + sizeof(*term); 1040 term->camera.wObjectiveFocalLengthMin = 1041 get_unaligned_le16(&buffer[8]); 1042 term->camera.wObjectiveFocalLengthMax = 1043 get_unaligned_le16(&buffer[10]); 1044 term->camera.wOcularFocalLength = 1045 get_unaligned_le16(&buffer[12]); 1046 memcpy(term->camera.bmControls, &buffer[15], n); 1047 } else if (UVC_ENTITY_TYPE(term) == 1048 UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1049 term->media.bControlSize = n; 1050 term->media.bmControls = (u8 *)term + sizeof(*term); 1051 term->media.bTransportModeSize = p; 1052 term->media.bmTransportModes = (u8 *)term 1053 + sizeof(*term) + n; 1054 memcpy(term->media.bmControls, &buffer[9], n); 1055 memcpy(term->media.bmTransportModes, &buffer[10+n], p); 1056 } 1057 1058 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 1059 type_name = "Camera"; 1060 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 1061 type_name = "Media"; 1062 else 1063 type_name = "Input"; 1064 1065 uvc_entity_set_name(dev, term, type_name, buffer[7]); 1066 1067 list_add_tail(&term->list, &dev->entities); 1068 break; 1069 1070 case UVC_VC_OUTPUT_TERMINAL: 1071 if (buflen < 9) { 1072 uvc_dbg(dev, DESCR, 1073 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n", 1074 udev->devnum, alts->desc.bInterfaceNumber); 1075 return -EINVAL; 1076 } 1077 1078 /* 1079 * Make sure the terminal type MSB is not null, otherwise it 1080 * could be confused with a unit. 1081 */ 1082 type = get_unaligned_le16(&buffer[4]); 1083 if ((type & 0xff00) == 0) { 1084 uvc_dbg(dev, DESCR, 1085 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1086 udev->devnum, alts->desc.bInterfaceNumber, 1087 buffer[3], type); 1088 return 0; 1089 } 1090 1091 term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT, 1092 buffer[3], 1, 0); 1093 if (IS_ERR(term)) 1094 return PTR_ERR(term); 1095 1096 memcpy(term->baSourceID, &buffer[7], 1); 1097 1098 uvc_entity_set_name(dev, term, "Output", buffer[8]); 1099 1100 list_add_tail(&term->list, &dev->entities); 1101 break; 1102 1103 case UVC_VC_SELECTOR_UNIT: 1104 p = buflen >= 5 ? buffer[4] : 0; 1105 1106 if (buflen < 5 || buflen < 6 + p) { 1107 uvc_dbg(dev, DESCR, 1108 "device %d videocontrol interface %d SELECTOR_UNIT error\n", 1109 udev->devnum, alts->desc.bInterfaceNumber); 1110 return -EINVAL; 1111 } 1112 1113 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 1114 p + 1, 0); 1115 if (IS_ERR(unit)) 1116 return PTR_ERR(unit); 1117 1118 memcpy(unit->baSourceID, &buffer[5], p); 1119 1120 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]); 1121 1122 list_add_tail(&unit->list, &dev->entities); 1123 break; 1124 1125 case UVC_VC_PROCESSING_UNIT: 1126 n = buflen >= 8 ? buffer[7] : 0; 1127 p = dev->uvc_version >= 0x0110 ? 10 : 9; 1128 1129 if (buflen < p + n) { 1130 uvc_dbg(dev, DESCR, 1131 "device %d videocontrol interface %d PROCESSING_UNIT error\n", 1132 udev->devnum, alts->desc.bInterfaceNumber); 1133 return -EINVAL; 1134 } 1135 1136 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n); 1137 if (IS_ERR(unit)) 1138 return PTR_ERR(unit); 1139 1140 memcpy(unit->baSourceID, &buffer[4], 1); 1141 unit->processing.wMaxMultiplier = 1142 get_unaligned_le16(&buffer[5]); 1143 unit->processing.bControlSize = buffer[7]; 1144 unit->processing.bmControls = (u8 *)unit + sizeof(*unit); 1145 memcpy(unit->processing.bmControls, &buffer[8], n); 1146 if (dev->uvc_version >= 0x0110) 1147 unit->processing.bmVideoStandards = buffer[9+n]; 1148 1149 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]); 1150 1151 list_add_tail(&unit->list, &dev->entities); 1152 break; 1153 1154 case UVC_VC_EXTENSION_UNIT: 1155 p = buflen >= 22 ? buffer[21] : 0; 1156 n = buflen >= 24 + p ? buffer[22+p] : 0; 1157 1158 if (buflen < 24 + p + n) { 1159 uvc_dbg(dev, DESCR, 1160 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 1161 udev->devnum, alts->desc.bInterfaceNumber); 1162 return -EINVAL; 1163 } 1164 1165 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 1166 p + 1, n); 1167 if (IS_ERR(unit)) 1168 return PTR_ERR(unit); 1169 1170 memcpy(unit->guid, &buffer[4], 16); 1171 unit->extension.bNumControls = buffer[20]; 1172 memcpy(unit->baSourceID, &buffer[22], p); 1173 unit->extension.bControlSize = buffer[22+p]; 1174 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 1175 memcpy(unit->extension.bmControls, &buffer[23+p], n); 1176 1177 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]); 1178 1179 list_add_tail(&unit->list, &dev->entities); 1180 break; 1181 1182 default: 1183 uvc_dbg(dev, DESCR, 1184 "Found an unknown CS_INTERFACE descriptor (%u)\n", 1185 buffer[2]); 1186 break; 1187 } 1188 1189 return 0; 1190 } 1191 1192 static int uvc_parse_control(struct uvc_device *dev) 1193 { 1194 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1195 const unsigned char *buffer = alts->extra; 1196 int buflen = alts->extralen; 1197 int ret; 1198 1199 /* 1200 * Parse the default alternate setting only, as the UVC specification 1201 * defines a single alternate setting, the default alternate setting 1202 * zero. 1203 */ 1204 1205 while (buflen > 2) { 1206 if (uvc_parse_vendor_control(dev, buffer, buflen) || 1207 buffer[1] != USB_DT_CS_INTERFACE) 1208 goto next_descriptor; 1209 1210 ret = uvc_parse_standard_control(dev, buffer, buflen); 1211 if (ret < 0) 1212 return ret; 1213 1214 next_descriptor: 1215 buflen -= buffer[0]; 1216 buffer += buffer[0]; 1217 } 1218 1219 /* 1220 * Check if the optional status endpoint is present. Built-in iSight 1221 * webcams have an interrupt endpoint but spit proprietary data that 1222 * don't conform to the UVC status endpoint messages. Don't try to 1223 * handle the interrupt endpoint for those cameras. 1224 */ 1225 if (alts->desc.bNumEndpoints == 1 && 1226 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1227 struct usb_host_endpoint *ep = &alts->endpoint[0]; 1228 struct usb_endpoint_descriptor *desc = &ep->desc; 1229 1230 if (usb_endpoint_is_int_in(desc) && 1231 le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1232 desc->bInterval != 0) { 1233 uvc_dbg(dev, DESCR, 1234 "Found a Status endpoint (addr %02x)\n", 1235 desc->bEndpointAddress); 1236 dev->int_ep = ep; 1237 } 1238 } 1239 1240 return 0; 1241 } 1242 1243 /* ----------------------------------------------------------------------------- 1244 * Privacy GPIO 1245 */ 1246 1247 static void uvc_gpio_event(struct uvc_device *dev) 1248 { 1249 struct uvc_entity *unit = dev->gpio_unit; 1250 struct uvc_video_chain *chain; 1251 u8 new_val; 1252 1253 if (!unit) 1254 return; 1255 1256 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy); 1257 1258 /* GPIO entities are always on the first chain. */ 1259 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list); 1260 uvc_ctrl_status_event(chain, unit->controls, &new_val); 1261 } 1262 1263 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity, 1264 u8 cs, void *data, u16 size) 1265 { 1266 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1) 1267 return -EINVAL; 1268 1269 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy); 1270 1271 return 0; 1272 } 1273 1274 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity, 1275 u8 cs, u8 *caps) 1276 { 1277 if (cs != UVC_CT_PRIVACY_CONTROL) 1278 return -EINVAL; 1279 1280 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE; 1281 return 0; 1282 } 1283 1284 static irqreturn_t uvc_gpio_irq(int irq, void *data) 1285 { 1286 struct uvc_device *dev = data; 1287 1288 uvc_gpio_event(dev); 1289 return IRQ_HANDLED; 1290 } 1291 1292 static int uvc_gpio_parse(struct uvc_device *dev) 1293 { 1294 struct uvc_entity *unit; 1295 struct gpio_desc *gpio_privacy; 1296 int irq; 1297 1298 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy", 1299 GPIOD_IN); 1300 if (IS_ERR_OR_NULL(gpio_privacy)) 1301 return PTR_ERR_OR_ZERO(gpio_privacy); 1302 1303 irq = gpiod_to_irq(gpio_privacy); 1304 if (irq < 0) 1305 return dev_err_probe(&dev->udev->dev, irq, 1306 "No IRQ for privacy GPIO\n"); 1307 1308 unit = uvc_alloc_new_entity(dev, UVC_EXT_GPIO_UNIT, 1309 UVC_EXT_GPIO_UNIT_ID, 0, 1); 1310 if (IS_ERR(unit)) 1311 return PTR_ERR(unit); 1312 1313 unit->gpio.gpio_privacy = gpio_privacy; 1314 unit->gpio.irq = irq; 1315 unit->gpio.bControlSize = 1; 1316 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit); 1317 unit->gpio.bmControls[0] = 1; 1318 unit->get_cur = uvc_gpio_get_cur; 1319 unit->get_info = uvc_gpio_get_info; 1320 strscpy(unit->name, "GPIO", sizeof(unit->name)); 1321 1322 list_add_tail(&unit->list, &dev->entities); 1323 1324 dev->gpio_unit = unit; 1325 1326 return 0; 1327 } 1328 1329 static int uvc_gpio_init_irq(struct uvc_device *dev) 1330 { 1331 struct uvc_entity *unit = dev->gpio_unit; 1332 1333 if (!unit || unit->gpio.irq < 0) 1334 return 0; 1335 1336 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL, 1337 uvc_gpio_irq, 1338 IRQF_ONESHOT | IRQF_TRIGGER_FALLING | 1339 IRQF_TRIGGER_RISING, 1340 "uvc_privacy_gpio", dev); 1341 } 1342 1343 /* ------------------------------------------------------------------------ 1344 * UVC device scan 1345 */ 1346 1347 /* 1348 * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1349 * and containing the following units: 1350 * 1351 * - one or more Output Terminals (USB Streaming or Display) 1352 * - zero or one Processing Unit 1353 * - zero, one or more single-input Selector Units 1354 * - zero or one multiple-input Selector Units, provided all inputs are 1355 * connected to input terminals 1356 * - zero, one or mode single-input Extension Units 1357 * - one or more Input Terminals (Camera, External or USB Streaming) 1358 * 1359 * The terminal and units must match on of the following structures: 1360 * 1361 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 1362 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 1363 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 1364 * 1365 * +---------+ +---------+ -> OTT_*(0) 1366 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 1367 * +---------+ +---------+ -> OTT_*(n) 1368 * 1369 * The Processing Unit and Extension Units can be in any order. Additional 1370 * Extension Units connected to the main chain as single-unit branches are 1371 * also supported. Single-input Selector Units are ignored. 1372 */ 1373 static int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1374 struct uvc_entity *entity) 1375 { 1376 switch (UVC_ENTITY_TYPE(entity)) { 1377 case UVC_VC_EXTENSION_UNIT: 1378 uvc_dbg_cont(PROBE, " <- XU %d", entity->id); 1379 1380 if (entity->bNrInPins != 1) { 1381 uvc_dbg(chain->dev, DESCR, 1382 "Extension unit %d has more than 1 input pin\n", 1383 entity->id); 1384 return -1; 1385 } 1386 1387 break; 1388 1389 case UVC_VC_PROCESSING_UNIT: 1390 uvc_dbg_cont(PROBE, " <- PU %d", entity->id); 1391 1392 if (chain->processing != NULL) { 1393 uvc_dbg(chain->dev, DESCR, 1394 "Found multiple Processing Units in chain\n"); 1395 return -1; 1396 } 1397 1398 chain->processing = entity; 1399 break; 1400 1401 case UVC_VC_SELECTOR_UNIT: 1402 uvc_dbg_cont(PROBE, " <- SU %d", entity->id); 1403 1404 /* Single-input selector units are ignored. */ 1405 if (entity->bNrInPins == 1) 1406 break; 1407 1408 if (chain->selector != NULL) { 1409 uvc_dbg(chain->dev, DESCR, 1410 "Found multiple Selector Units in chain\n"); 1411 return -1; 1412 } 1413 1414 chain->selector = entity; 1415 break; 1416 1417 case UVC_ITT_VENDOR_SPECIFIC: 1418 case UVC_ITT_CAMERA: 1419 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1420 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1421 1422 break; 1423 1424 case UVC_OTT_VENDOR_SPECIFIC: 1425 case UVC_OTT_DISPLAY: 1426 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1427 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1428 1429 break; 1430 1431 case UVC_TT_STREAMING: 1432 if (UVC_ENTITY_IS_ITERM(entity)) 1433 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1434 else 1435 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1436 1437 break; 1438 1439 default: 1440 uvc_dbg(chain->dev, DESCR, 1441 "Unsupported entity type 0x%04x found in chain\n", 1442 UVC_ENTITY_TYPE(entity)); 1443 return -1; 1444 } 1445 1446 list_add_tail(&entity->chain, &chain->entities); 1447 return 0; 1448 } 1449 1450 static int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1451 struct uvc_entity *entity, struct uvc_entity *prev) 1452 { 1453 struct uvc_entity *forward; 1454 int found; 1455 1456 /* Forward scan */ 1457 forward = NULL; 1458 found = 0; 1459 1460 while (1) { 1461 forward = uvc_entity_by_reference(chain->dev, entity->id, 1462 forward); 1463 if (forward == NULL) 1464 break; 1465 if (forward == prev) 1466 continue; 1467 if (forward->chain.next || forward->chain.prev) { 1468 uvc_dbg(chain->dev, DESCR, 1469 "Found reference to entity %d already in chain\n", 1470 forward->id); 1471 return -EINVAL; 1472 } 1473 1474 switch (UVC_ENTITY_TYPE(forward)) { 1475 case UVC_VC_EXTENSION_UNIT: 1476 if (forward->bNrInPins != 1) { 1477 uvc_dbg(chain->dev, DESCR, 1478 "Extension unit %d has more than 1 input pin\n", 1479 forward->id); 1480 return -EINVAL; 1481 } 1482 1483 /* 1484 * Some devices reference an output terminal as the 1485 * source of extension units. This is incorrect, as 1486 * output terminals only have an input pin, and thus 1487 * can't be connected to any entity in the forward 1488 * direction. The resulting topology would cause issues 1489 * when registering the media controller graph. To 1490 * avoid this problem, connect the extension unit to 1491 * the source of the output terminal instead. 1492 */ 1493 if (UVC_ENTITY_IS_OTERM(entity)) { 1494 struct uvc_entity *source; 1495 1496 source = uvc_entity_by_id(chain->dev, 1497 entity->baSourceID[0]); 1498 if (!source) { 1499 uvc_dbg(chain->dev, DESCR, 1500 "Can't connect extension unit %u in chain\n", 1501 forward->id); 1502 break; 1503 } 1504 1505 forward->baSourceID[0] = source->id; 1506 } 1507 1508 list_add_tail(&forward->chain, &chain->entities); 1509 if (!found) 1510 uvc_dbg_cont(PROBE, " (->"); 1511 1512 uvc_dbg_cont(PROBE, " XU %d", forward->id); 1513 found = 1; 1514 break; 1515 1516 case UVC_OTT_VENDOR_SPECIFIC: 1517 case UVC_OTT_DISPLAY: 1518 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1519 case UVC_TT_STREAMING: 1520 if (UVC_ENTITY_IS_ITERM(forward)) { 1521 uvc_dbg(chain->dev, DESCR, 1522 "Unsupported input terminal %u\n", 1523 forward->id); 1524 return -EINVAL; 1525 } 1526 1527 if (UVC_ENTITY_IS_OTERM(entity)) { 1528 uvc_dbg(chain->dev, DESCR, 1529 "Unsupported connection between output terminals %u and %u\n", 1530 entity->id, forward->id); 1531 break; 1532 } 1533 1534 list_add_tail(&forward->chain, &chain->entities); 1535 if (!found) 1536 uvc_dbg_cont(PROBE, " (->"); 1537 1538 uvc_dbg_cont(PROBE, " OT %d", forward->id); 1539 found = 1; 1540 break; 1541 } 1542 } 1543 if (found) 1544 uvc_dbg_cont(PROBE, ")"); 1545 1546 return 0; 1547 } 1548 1549 static int uvc_scan_chain_backward(struct uvc_video_chain *chain, 1550 struct uvc_entity **_entity) 1551 { 1552 struct uvc_entity *entity = *_entity; 1553 struct uvc_entity *term; 1554 int id = -EINVAL, i; 1555 1556 switch (UVC_ENTITY_TYPE(entity)) { 1557 case UVC_VC_EXTENSION_UNIT: 1558 case UVC_VC_PROCESSING_UNIT: 1559 id = entity->baSourceID[0]; 1560 break; 1561 1562 case UVC_VC_SELECTOR_UNIT: 1563 /* Single-input selector units are ignored. */ 1564 if (entity->bNrInPins == 1) { 1565 id = entity->baSourceID[0]; 1566 break; 1567 } 1568 1569 uvc_dbg_cont(PROBE, " <- IT"); 1570 1571 chain->selector = entity; 1572 for (i = 0; i < entity->bNrInPins; ++i) { 1573 id = entity->baSourceID[i]; 1574 term = uvc_entity_by_id(chain->dev, id); 1575 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1576 uvc_dbg(chain->dev, DESCR, 1577 "Selector unit %d input %d isn't connected to an input terminal\n", 1578 entity->id, i); 1579 return -1; 1580 } 1581 1582 if (term->chain.next || term->chain.prev) { 1583 uvc_dbg(chain->dev, DESCR, 1584 "Found reference to entity %d already in chain\n", 1585 term->id); 1586 return -EINVAL; 1587 } 1588 1589 uvc_dbg_cont(PROBE, " %d", term->id); 1590 1591 list_add_tail(&term->chain, &chain->entities); 1592 uvc_scan_chain_forward(chain, term, entity); 1593 } 1594 1595 uvc_dbg_cont(PROBE, "\n"); 1596 1597 id = 0; 1598 break; 1599 1600 case UVC_ITT_VENDOR_SPECIFIC: 1601 case UVC_ITT_CAMERA: 1602 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1603 case UVC_OTT_VENDOR_SPECIFIC: 1604 case UVC_OTT_DISPLAY: 1605 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1606 case UVC_TT_STREAMING: 1607 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 1608 break; 1609 } 1610 1611 if (id <= 0) { 1612 *_entity = NULL; 1613 return id; 1614 } 1615 1616 entity = uvc_entity_by_id(chain->dev, id); 1617 if (entity == NULL) { 1618 uvc_dbg(chain->dev, DESCR, 1619 "Found reference to unknown entity %d\n", id); 1620 return -EINVAL; 1621 } 1622 1623 *_entity = entity; 1624 return 0; 1625 } 1626 1627 static int uvc_scan_chain(struct uvc_video_chain *chain, 1628 struct uvc_entity *term) 1629 { 1630 struct uvc_entity *entity, *prev; 1631 1632 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:"); 1633 1634 entity = term; 1635 prev = NULL; 1636 1637 while (entity != NULL) { 1638 /* Entity must not be part of an existing chain */ 1639 if (entity->chain.next || entity->chain.prev) { 1640 uvc_dbg(chain->dev, DESCR, 1641 "Found reference to entity %d already in chain\n", 1642 entity->id); 1643 return -EINVAL; 1644 } 1645 1646 /* Process entity */ 1647 if (uvc_scan_chain_entity(chain, entity) < 0) 1648 return -EINVAL; 1649 1650 /* Forward scan */ 1651 if (uvc_scan_chain_forward(chain, entity, prev) < 0) 1652 return -EINVAL; 1653 1654 /* Backward scan */ 1655 prev = entity; 1656 if (uvc_scan_chain_backward(chain, &entity) < 0) 1657 return -EINVAL; 1658 } 1659 1660 return 0; 1661 } 1662 1663 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 1664 char *buffer) 1665 { 1666 struct uvc_entity *term; 1667 unsigned int nterms = 0; 1668 char *p = buffer; 1669 1670 list_for_each_entry(term, terms, chain) { 1671 if (!UVC_ENTITY_IS_TERM(term) || 1672 UVC_TERM_DIRECTION(term) != dir) 1673 continue; 1674 1675 if (nterms) 1676 p += sprintf(p, ","); 1677 if (++nterms >= 4) { 1678 p += sprintf(p, "..."); 1679 break; 1680 } 1681 p += sprintf(p, "%u", term->id); 1682 } 1683 1684 return p - buffer; 1685 } 1686 1687 static const char *uvc_print_chain(struct uvc_video_chain *chain) 1688 { 1689 static char buffer[43]; 1690 char *p = buffer; 1691 1692 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 1693 p += sprintf(p, " -> "); 1694 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 1695 1696 return buffer; 1697 } 1698 1699 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) 1700 { 1701 struct uvc_video_chain *chain; 1702 1703 chain = kzalloc(sizeof(*chain), GFP_KERNEL); 1704 if (chain == NULL) 1705 return NULL; 1706 1707 INIT_LIST_HEAD(&chain->entities); 1708 mutex_init(&chain->ctrl_mutex); 1709 chain->dev = dev; 1710 v4l2_prio_init(&chain->prio); 1711 1712 return chain; 1713 } 1714 1715 /* 1716 * Fallback heuristic for devices that don't connect units and terminals in a 1717 * valid chain. 1718 * 1719 * Some devices have invalid baSourceID references, causing uvc_scan_chain() 1720 * to fail, but if we just take the entities we can find and put them together 1721 * in the most sensible chain we can think of, turns out they do work anyway. 1722 * Note: This heuristic assumes there is a single chain. 1723 * 1724 * At the time of writing, devices known to have such a broken chain are 1725 * - Acer Integrated Camera (5986:055a) 1726 * - Realtek rtl157a7 (0bda:57a7) 1727 */ 1728 static int uvc_scan_fallback(struct uvc_device *dev) 1729 { 1730 struct uvc_video_chain *chain; 1731 struct uvc_entity *iterm = NULL; 1732 struct uvc_entity *oterm = NULL; 1733 struct uvc_entity *entity; 1734 struct uvc_entity *prev; 1735 1736 /* 1737 * Start by locating the input and output terminals. We only support 1738 * devices with exactly one of each for now. 1739 */ 1740 list_for_each_entry(entity, &dev->entities, list) { 1741 if (UVC_ENTITY_IS_ITERM(entity)) { 1742 if (iterm) 1743 return -EINVAL; 1744 iterm = entity; 1745 } 1746 1747 if (UVC_ENTITY_IS_OTERM(entity)) { 1748 if (oterm) 1749 return -EINVAL; 1750 oterm = entity; 1751 } 1752 } 1753 1754 if (iterm == NULL || oterm == NULL) 1755 return -EINVAL; 1756 1757 /* Allocate the chain and fill it. */ 1758 chain = uvc_alloc_chain(dev); 1759 if (chain == NULL) 1760 return -ENOMEM; 1761 1762 if (uvc_scan_chain_entity(chain, oterm) < 0) 1763 goto error; 1764 1765 prev = oterm; 1766 1767 /* 1768 * Add all Processing and Extension Units with two pads. The order 1769 * doesn't matter much, use reverse list traversal to connect units in 1770 * UVC descriptor order as we build the chain from output to input. This 1771 * leads to units appearing in the order meant by the manufacturer for 1772 * the cameras known to require this heuristic. 1773 */ 1774 list_for_each_entry_reverse(entity, &dev->entities, list) { 1775 if (entity->type != UVC_VC_PROCESSING_UNIT && 1776 entity->type != UVC_VC_EXTENSION_UNIT) 1777 continue; 1778 1779 if (entity->num_pads != 2) 1780 continue; 1781 1782 if (uvc_scan_chain_entity(chain, entity) < 0) 1783 goto error; 1784 1785 prev->baSourceID[0] = entity->id; 1786 prev = entity; 1787 } 1788 1789 if (uvc_scan_chain_entity(chain, iterm) < 0) 1790 goto error; 1791 1792 prev->baSourceID[0] = iterm->id; 1793 1794 list_add_tail(&chain->list, &dev->chains); 1795 1796 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n", 1797 uvc_print_chain(chain)); 1798 1799 return 0; 1800 1801 error: 1802 kfree(chain); 1803 return -EINVAL; 1804 } 1805 1806 /* 1807 * Scan the device for video chains and register video devices. 1808 * 1809 * Chains are scanned starting at their output terminals and walked backwards. 1810 */ 1811 static int uvc_scan_device(struct uvc_device *dev) 1812 { 1813 struct uvc_video_chain *chain; 1814 struct uvc_entity *term; 1815 1816 list_for_each_entry(term, &dev->entities, list) { 1817 if (!UVC_ENTITY_IS_OTERM(term)) 1818 continue; 1819 1820 /* 1821 * If the terminal is already included in a chain, skip it. 1822 * This can happen for chains that have multiple output 1823 * terminals, where all output terminals beside the first one 1824 * will be inserted in the chain in forward scans. 1825 */ 1826 if (term->chain.next || term->chain.prev) 1827 continue; 1828 1829 chain = uvc_alloc_chain(dev); 1830 if (chain == NULL) 1831 return -ENOMEM; 1832 1833 term->flags |= UVC_ENTITY_FLAG_DEFAULT; 1834 1835 if (uvc_scan_chain(chain, term) < 0) { 1836 kfree(chain); 1837 continue; 1838 } 1839 1840 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n", 1841 uvc_print_chain(chain)); 1842 1843 list_add_tail(&chain->list, &dev->chains); 1844 } 1845 1846 if (list_empty(&dev->chains)) 1847 uvc_scan_fallback(dev); 1848 1849 if (list_empty(&dev->chains)) { 1850 dev_info(&dev->udev->dev, "No valid video chain found.\n"); 1851 return -1; 1852 } 1853 1854 /* Add GPIO entity to the first chain. */ 1855 if (dev->gpio_unit) { 1856 chain = list_first_entry(&dev->chains, 1857 struct uvc_video_chain, list); 1858 list_add_tail(&dev->gpio_unit->chain, &chain->entities); 1859 } 1860 1861 return 0; 1862 } 1863 1864 /* ------------------------------------------------------------------------ 1865 * Video device registration and unregistration 1866 */ 1867 1868 /* 1869 * Delete the UVC device. 1870 * 1871 * Called by the kernel when the last reference to the uvc_device structure 1872 * is released. 1873 * 1874 * As this function is called after or during disconnect(), all URBs have 1875 * already been cancelled by the USB core. There is no need to kill the 1876 * interrupt URB manually. 1877 */ 1878 static void uvc_delete(struct kref *kref) 1879 { 1880 struct uvc_device *dev = container_of(kref, struct uvc_device, ref); 1881 struct list_head *p, *n; 1882 1883 uvc_status_cleanup(dev); 1884 uvc_ctrl_cleanup_device(dev); 1885 1886 usb_put_intf(dev->intf); 1887 usb_put_dev(dev->udev); 1888 1889 #ifdef CONFIG_MEDIA_CONTROLLER 1890 media_device_cleanup(&dev->mdev); 1891 #endif 1892 1893 list_for_each_safe(p, n, &dev->chains) { 1894 struct uvc_video_chain *chain; 1895 1896 chain = list_entry(p, struct uvc_video_chain, list); 1897 kfree(chain); 1898 } 1899 1900 list_for_each_safe(p, n, &dev->entities) { 1901 struct uvc_entity *entity; 1902 1903 entity = list_entry(p, struct uvc_entity, list); 1904 #ifdef CONFIG_MEDIA_CONTROLLER 1905 uvc_mc_cleanup_entity(entity); 1906 #endif 1907 kfree(entity); 1908 } 1909 1910 list_for_each_safe(p, n, &dev->streams) { 1911 struct uvc_streaming *streaming; 1912 1913 streaming = list_entry(p, struct uvc_streaming, list); 1914 usb_driver_release_interface(&uvc_driver.driver, 1915 streaming->intf); 1916 uvc_stream_delete(streaming); 1917 } 1918 1919 kfree(dev); 1920 } 1921 1922 static void uvc_release(struct video_device *vdev) 1923 { 1924 struct uvc_streaming *stream = video_get_drvdata(vdev); 1925 struct uvc_device *dev = stream->dev; 1926 1927 kref_put(&dev->ref, uvc_delete); 1928 } 1929 1930 /* 1931 * Unregister the video devices. 1932 */ 1933 static void uvc_unregister_video(struct uvc_device *dev) 1934 { 1935 struct uvc_streaming *stream; 1936 1937 list_for_each_entry(stream, &dev->streams, list) { 1938 /* Nothing to do here, continue. */ 1939 if (!video_is_registered(&stream->vdev)) 1940 continue; 1941 1942 /* 1943 * For stream->vdev we follow the same logic as: 1944 * vb2_video_unregister_device(). 1945 */ 1946 1947 /* 1. Take a reference to vdev */ 1948 get_device(&stream->vdev.dev); 1949 1950 /* 2. Ensure that no new ioctls can be called. */ 1951 video_unregister_device(&stream->vdev); 1952 1953 /* 3. Wait for old ioctls to finish. */ 1954 mutex_lock(&stream->mutex); 1955 1956 /* 4. Stop streaming. */ 1957 uvc_queue_release(&stream->queue); 1958 1959 mutex_unlock(&stream->mutex); 1960 1961 put_device(&stream->vdev.dev); 1962 1963 /* 1964 * For stream->meta.vdev we can directly call: 1965 * vb2_video_unregister_device(). 1966 */ 1967 vb2_video_unregister_device(&stream->meta.vdev); 1968 1969 /* 1970 * Now both vdevs are not streaming and all the ioctls will 1971 * return -ENODEV. 1972 */ 1973 1974 uvc_debugfs_cleanup_stream(stream); 1975 } 1976 1977 uvc_status_unregister(dev); 1978 1979 if (dev->vdev.dev) 1980 v4l2_device_unregister(&dev->vdev); 1981 #ifdef CONFIG_MEDIA_CONTROLLER 1982 if (media_devnode_is_registered(dev->mdev.devnode)) 1983 media_device_unregister(&dev->mdev); 1984 #endif 1985 } 1986 1987 int uvc_register_video_device(struct uvc_device *dev, 1988 struct uvc_streaming *stream, 1989 struct video_device *vdev, 1990 struct uvc_video_queue *queue, 1991 enum v4l2_buf_type type, 1992 const struct v4l2_file_operations *fops, 1993 const struct v4l2_ioctl_ops *ioctl_ops) 1994 { 1995 int ret; 1996 1997 /* Initialize the video buffers queue. */ 1998 ret = uvc_queue_init(queue, type, !uvc_no_drop_param); 1999 if (ret) 2000 return ret; 2001 2002 /* Register the device with V4L. */ 2003 2004 /* 2005 * We already hold a reference to dev->udev. The video device will be 2006 * unregistered before the reference is released, so we don't need to 2007 * get another one. 2008 */ 2009 vdev->v4l2_dev = &dev->vdev; 2010 vdev->fops = fops; 2011 vdev->ioctl_ops = ioctl_ops; 2012 vdev->release = uvc_release; 2013 vdev->prio = &stream->chain->prio; 2014 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2015 vdev->vfl_dir = VFL_DIR_TX; 2016 else 2017 vdev->vfl_dir = VFL_DIR_RX; 2018 2019 switch (type) { 2020 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 2021 default: 2022 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 2023 break; 2024 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 2025 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 2026 break; 2027 case V4L2_BUF_TYPE_META_CAPTURE: 2028 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; 2029 break; 2030 } 2031 2032 strscpy(vdev->name, dev->name, sizeof(vdev->name)); 2033 2034 /* 2035 * Set the driver data before calling video_register_device, otherwise 2036 * the file open() handler might race us. 2037 */ 2038 video_set_drvdata(vdev, stream); 2039 2040 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); 2041 if (ret < 0) { 2042 dev_err(&stream->intf->dev, 2043 "Failed to register %s device (%d).\n", 2044 v4l2_type_names[type], ret); 2045 return ret; 2046 } 2047 2048 kref_get(&dev->ref); 2049 return 0; 2050 } 2051 2052 static int uvc_register_video(struct uvc_device *dev, 2053 struct uvc_streaming *stream) 2054 { 2055 int ret; 2056 2057 /* Initialize the streaming interface with default parameters. */ 2058 ret = uvc_video_init(stream); 2059 if (ret < 0) { 2060 dev_err(&stream->intf->dev, 2061 "Failed to initialize the device (%d).\n", ret); 2062 return ret; 2063 } 2064 2065 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 2066 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE 2067 | V4L2_CAP_META_CAPTURE; 2068 else 2069 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; 2070 2071 uvc_debugfs_init_stream(stream); 2072 2073 /* Register the device with V4L. */ 2074 return uvc_register_video_device(dev, stream, &stream->vdev, 2075 &stream->queue, stream->type, 2076 &uvc_fops, &uvc_ioctl_ops); 2077 } 2078 2079 /* 2080 * Register all video devices in all chains. 2081 */ 2082 static int uvc_register_terms(struct uvc_device *dev, 2083 struct uvc_video_chain *chain) 2084 { 2085 struct uvc_streaming *stream; 2086 struct uvc_entity *term; 2087 int ret; 2088 2089 list_for_each_entry(term, &chain->entities, chain) { 2090 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 2091 continue; 2092 2093 stream = uvc_stream_by_id(dev, term->id); 2094 if (stream == NULL) { 2095 dev_info(&dev->udev->dev, 2096 "No streaming interface found for terminal %u.", 2097 term->id); 2098 continue; 2099 } 2100 2101 stream->chain = chain; 2102 ret = uvc_register_video(dev, stream); 2103 if (ret < 0) 2104 return ret; 2105 2106 /* 2107 * Register a metadata node, but ignore a possible failure, 2108 * complete registration of video nodes anyway. 2109 */ 2110 uvc_meta_register(stream); 2111 2112 term->vdev = &stream->vdev; 2113 } 2114 2115 return 0; 2116 } 2117 2118 static int uvc_register_chains(struct uvc_device *dev) 2119 { 2120 struct uvc_video_chain *chain; 2121 int ret; 2122 2123 list_for_each_entry(chain, &dev->chains, list) { 2124 ret = uvc_register_terms(dev, chain); 2125 if (ret < 0) 2126 return ret; 2127 2128 #ifdef CONFIG_MEDIA_CONTROLLER 2129 ret = uvc_mc_register_entities(chain); 2130 if (ret < 0) 2131 dev_info(&dev->udev->dev, 2132 "Failed to register entities (%d).\n", ret); 2133 #endif 2134 } 2135 2136 return 0; 2137 } 2138 2139 /* ------------------------------------------------------------------------ 2140 * USB probe, disconnect, suspend and resume 2141 */ 2142 2143 static const struct uvc_device_info uvc_quirk_none = { 0 }; 2144 2145 static int uvc_probe(struct usb_interface *intf, 2146 const struct usb_device_id *id) 2147 { 2148 struct usb_device *udev = interface_to_usbdev(intf); 2149 struct uvc_device *dev; 2150 const struct uvc_device_info *info = 2151 (const struct uvc_device_info *)id->driver_info; 2152 int function; 2153 int ret; 2154 2155 /* Allocate memory for the device and initialize it. */ 2156 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2157 if (dev == NULL) 2158 return -ENOMEM; 2159 2160 INIT_LIST_HEAD(&dev->entities); 2161 INIT_LIST_HEAD(&dev->chains); 2162 INIT_LIST_HEAD(&dev->streams); 2163 kref_init(&dev->ref); 2164 atomic_set(&dev->nmappings, 0); 2165 2166 dev->udev = usb_get_dev(udev); 2167 dev->intf = usb_get_intf(intf); 2168 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 2169 dev->info = info ? info : &uvc_quirk_none; 2170 dev->quirks = uvc_quirks_param == -1 2171 ? dev->info->quirks : uvc_quirks_param; 2172 2173 if (id->idVendor && id->idProduct) 2174 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n", 2175 udev->devpath, id->idVendor, id->idProduct); 2176 else 2177 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n", 2178 udev->devpath); 2179 2180 if (udev->product != NULL) 2181 strscpy(dev->name, udev->product, sizeof(dev->name)); 2182 else 2183 snprintf(dev->name, sizeof(dev->name), 2184 "UVC Camera (%04x:%04x)", 2185 le16_to_cpu(udev->descriptor.idVendor), 2186 le16_to_cpu(udev->descriptor.idProduct)); 2187 2188 /* 2189 * Add iFunction or iInterface to names when available as additional 2190 * distinguishers between interfaces. iFunction is prioritized over 2191 * iInterface which matches Windows behavior at the point of writing. 2192 */ 2193 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0) 2194 function = intf->intf_assoc->iFunction; 2195 else 2196 function = intf->cur_altsetting->desc.iInterface; 2197 if (function != 0) { 2198 size_t len; 2199 2200 strlcat(dev->name, ": ", sizeof(dev->name)); 2201 len = strlen(dev->name); 2202 usb_string(udev, function, dev->name + len, 2203 sizeof(dev->name) - len); 2204 } 2205 2206 /* Initialize the media device. */ 2207 #ifdef CONFIG_MEDIA_CONTROLLER 2208 dev->mdev.dev = &intf->dev; 2209 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); 2210 if (udev->serial) 2211 strscpy(dev->mdev.serial, udev->serial, 2212 sizeof(dev->mdev.serial)); 2213 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info)); 2214 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 2215 media_device_init(&dev->mdev); 2216 2217 dev->vdev.mdev = &dev->mdev; 2218 #endif 2219 2220 /* Parse the Video Class control descriptor. */ 2221 if (uvc_parse_control(dev) < 0) { 2222 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n"); 2223 goto error; 2224 } 2225 2226 /* Parse the associated GPIOs. */ 2227 if (uvc_gpio_parse(dev) < 0) { 2228 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n"); 2229 goto error; 2230 } 2231 2232 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", 2233 dev->uvc_version >> 8, dev->uvc_version & 0xff, 2234 udev->product ? udev->product : "<unnamed>", 2235 le16_to_cpu(udev->descriptor.idVendor), 2236 le16_to_cpu(udev->descriptor.idProduct)); 2237 2238 if (dev->quirks != dev->info->quirks) { 2239 dev_info(&dev->udev->dev, 2240 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n", 2241 dev->quirks); 2242 dev_info(&dev->udev->dev, 2243 "Please report required quirks to the linux-media mailing list.\n"); 2244 } 2245 2246 if (dev->info->uvc_version) { 2247 dev->uvc_version = dev->info->uvc_version; 2248 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n", 2249 dev->uvc_version >> 8, dev->uvc_version & 0xff); 2250 } 2251 2252 /* Register the V4L2 device. */ 2253 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) 2254 goto error; 2255 2256 /* Scan the device for video chains. */ 2257 if (uvc_scan_device(dev) < 0) 2258 goto error; 2259 2260 /* Initialize controls. */ 2261 if (uvc_ctrl_init_device(dev) < 0) 2262 goto error; 2263 2264 /* Register video device nodes. */ 2265 if (uvc_register_chains(dev) < 0) 2266 goto error; 2267 2268 #ifdef CONFIG_MEDIA_CONTROLLER 2269 /* Register the media device node */ 2270 if (media_device_register(&dev->mdev) < 0) 2271 goto error; 2272 #endif 2273 /* Save our data pointer in the interface data. */ 2274 usb_set_intfdata(intf, dev); 2275 2276 /* Initialize the interrupt URB. */ 2277 ret = uvc_status_init(dev); 2278 if (ret < 0) { 2279 dev_info(&dev->udev->dev, 2280 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n", 2281 ret); 2282 } 2283 2284 ret = uvc_gpio_init_irq(dev); 2285 if (ret < 0) { 2286 dev_err(&dev->udev->dev, 2287 "Unable to request privacy GPIO IRQ (%d)\n", ret); 2288 goto error; 2289 } 2290 2291 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME) 2292 udev->quirks &= ~USB_QUIRK_RESET_RESUME; 2293 2294 if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND)) 2295 usb_enable_autosuspend(udev); 2296 2297 uvc_dbg(dev, PROBE, "UVC device initialized\n"); 2298 2299 return 0; 2300 2301 error: 2302 uvc_unregister_video(dev); 2303 kref_put(&dev->ref, uvc_delete); 2304 return -ENODEV; 2305 } 2306 2307 static void uvc_disconnect(struct usb_interface *intf) 2308 { 2309 struct uvc_device *dev = usb_get_intfdata(intf); 2310 2311 /* 2312 * Set the USB interface data to NULL. This can be done outside the 2313 * lock, as there's no other reader. 2314 */ 2315 usb_set_intfdata(intf, NULL); 2316 2317 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2318 UVC_SC_VIDEOSTREAMING) 2319 return; 2320 2321 uvc_unregister_video(dev); 2322 kref_put(&dev->ref, uvc_delete); 2323 } 2324 2325 static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 2326 { 2327 struct uvc_device *dev = usb_get_intfdata(intf); 2328 struct uvc_streaming *stream; 2329 2330 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n", 2331 intf->cur_altsetting->desc.bInterfaceNumber); 2332 2333 /* Controls are cached on the fly so they don't need to be saved. */ 2334 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2335 UVC_SC_VIDEOCONTROL) { 2336 uvc_status_suspend(dev); 2337 return 0; 2338 } 2339 2340 list_for_each_entry(stream, &dev->streams, list) { 2341 if (stream->intf == intf) 2342 return uvc_video_suspend(stream); 2343 } 2344 2345 uvc_dbg(dev, SUSPEND, 2346 "Suspend: video streaming USB interface mismatch\n"); 2347 return -EINVAL; 2348 } 2349 2350 static int __uvc_resume(struct usb_interface *intf, int reset) 2351 { 2352 struct uvc_device *dev = usb_get_intfdata(intf); 2353 struct uvc_streaming *stream; 2354 int ret = 0; 2355 2356 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n", 2357 intf->cur_altsetting->desc.bInterfaceNumber); 2358 2359 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2360 UVC_SC_VIDEOCONTROL) { 2361 if (reset) { 2362 ret = uvc_ctrl_restore_values(dev); 2363 if (ret < 0) 2364 return ret; 2365 } 2366 2367 return uvc_status_resume(dev); 2368 } 2369 2370 list_for_each_entry(stream, &dev->streams, list) { 2371 if (stream->intf == intf) { 2372 ret = uvc_video_resume(stream, reset); 2373 if (ret < 0) 2374 uvc_queue_streamoff(&stream->queue, 2375 stream->queue.queue.type); 2376 return ret; 2377 } 2378 } 2379 2380 uvc_dbg(dev, SUSPEND, 2381 "Resume: video streaming USB interface mismatch\n"); 2382 return -EINVAL; 2383 } 2384 2385 static int uvc_resume(struct usb_interface *intf) 2386 { 2387 return __uvc_resume(intf, 0); 2388 } 2389 2390 static int uvc_reset_resume(struct usb_interface *intf) 2391 { 2392 return __uvc_resume(intf, 1); 2393 } 2394 2395 /* ------------------------------------------------------------------------ 2396 * Module parameters 2397 */ 2398 2399 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) 2400 { 2401 if (uvc_clock_param == CLOCK_MONOTONIC) 2402 return sprintf(buffer, "CLOCK_MONOTONIC"); 2403 else 2404 return sprintf(buffer, "CLOCK_REALTIME"); 2405 } 2406 2407 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) 2408 { 2409 if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 2410 val += strlen("clock_"); 2411 2412 if (strcasecmp(val, "monotonic") == 0) 2413 uvc_clock_param = CLOCK_MONOTONIC; 2414 else if (strcasecmp(val, "realtime") == 0) 2415 uvc_clock_param = CLOCK_REALTIME; 2416 else 2417 return -EINVAL; 2418 2419 return 0; 2420 } 2421 2422 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 2423 &uvc_clock_param, 0644); 2424 MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 2425 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644); 2426 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); 2427 module_param_named(nodrop, uvc_no_drop_param, uint, 0644); 2428 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 2429 module_param_named(quirks, uvc_quirks_param, uint, 0644); 2430 MODULE_PARM_DESC(quirks, "Forced device quirks"); 2431 module_param_named(trace, uvc_dbg_param, uint, 0644); 2432 MODULE_PARM_DESC(trace, "Trace level bitmask"); 2433 module_param_named(timeout, uvc_timeout_param, uint, 0644); 2434 MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 2435 2436 /* ------------------------------------------------------------------------ 2437 * Driver initialization and cleanup 2438 */ 2439 2440 static const struct uvc_device_info uvc_quirk_probe_minmax = { 2441 .quirks = UVC_QUIRK_PROBE_MINMAX, 2442 }; 2443 2444 static const struct uvc_device_info uvc_quirk_fix_bandwidth = { 2445 .quirks = UVC_QUIRK_FIX_BANDWIDTH, 2446 }; 2447 2448 static const struct uvc_device_info uvc_quirk_probe_def = { 2449 .quirks = UVC_QUIRK_PROBE_DEF, 2450 }; 2451 2452 static const struct uvc_device_info uvc_quirk_stream_no_fid = { 2453 .quirks = UVC_QUIRK_STREAM_NO_FID, 2454 }; 2455 2456 static const struct uvc_device_info uvc_quirk_force_y8 = { 2457 .quirks = UVC_QUIRK_FORCE_Y8, 2458 }; 2459 2460 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q} 2461 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \ 2462 {.meta_format = m} 2463 2464 /* 2465 * The Logitech cameras listed below have their interface class set to 2466 * VENDOR_SPEC because they don't announce themselves as UVC devices, even 2467 * though they are compliant. 2468 * 2469 * Sort these by vendor/product ID. 2470 */ 2471 static const struct usb_device_id uvc_ids[] = { 2472 /* Quanta ACER HD User Facing */ 2473 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2474 | USB_DEVICE_ID_MATCH_INT_INFO, 2475 .idVendor = 0x0408, 2476 .idProduct = 0x4033, 2477 .bInterfaceClass = USB_CLASS_VIDEO, 2478 .bInterfaceSubClass = 1, 2479 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2480 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2481 .uvc_version = 0x010a, 2482 } }, 2483 /* Quanta ACER HD User Facing */ 2484 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2485 | USB_DEVICE_ID_MATCH_INT_INFO, 2486 .idVendor = 0x0408, 2487 .idProduct = 0x4035, 2488 .bInterfaceClass = USB_CLASS_VIDEO, 2489 .bInterfaceSubClass = 1, 2490 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2491 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2492 .uvc_version = 0x010a, 2493 } }, 2494 /* LogiLink Wireless Webcam */ 2495 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2496 | USB_DEVICE_ID_MATCH_INT_INFO, 2497 .idVendor = 0x0416, 2498 .idProduct = 0xa91a, 2499 .bInterfaceClass = USB_CLASS_VIDEO, 2500 .bInterfaceSubClass = 1, 2501 .bInterfaceProtocol = 0, 2502 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2503 /* Genius eFace 2025 */ 2504 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2505 | USB_DEVICE_ID_MATCH_INT_INFO, 2506 .idVendor = 0x0458, 2507 .idProduct = 0x706e, 2508 .bInterfaceClass = USB_CLASS_VIDEO, 2509 .bInterfaceSubClass = 1, 2510 .bInterfaceProtocol = 0, 2511 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2512 /* Microsoft Lifecam NX-6000 */ 2513 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2514 | USB_DEVICE_ID_MATCH_INT_INFO, 2515 .idVendor = 0x045e, 2516 .idProduct = 0x00f8, 2517 .bInterfaceClass = USB_CLASS_VIDEO, 2518 .bInterfaceSubClass = 1, 2519 .bInterfaceProtocol = 0, 2520 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2521 /* Microsoft Lifecam NX-3000 */ 2522 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2523 | USB_DEVICE_ID_MATCH_INT_INFO, 2524 .idVendor = 0x045e, 2525 .idProduct = 0x0721, 2526 .bInterfaceClass = USB_CLASS_VIDEO, 2527 .bInterfaceSubClass = 1, 2528 .bInterfaceProtocol = 0, 2529 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2530 /* Microsoft Lifecam VX-7000 */ 2531 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2532 | USB_DEVICE_ID_MATCH_INT_INFO, 2533 .idVendor = 0x045e, 2534 .idProduct = 0x0723, 2535 .bInterfaceClass = USB_CLASS_VIDEO, 2536 .bInterfaceSubClass = 1, 2537 .bInterfaceProtocol = 0, 2538 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2539 /* Logitech, Webcam C910 */ 2540 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2541 | USB_DEVICE_ID_MATCH_INT_INFO, 2542 .idVendor = 0x046d, 2543 .idProduct = 0x0821, 2544 .bInterfaceClass = USB_CLASS_VIDEO, 2545 .bInterfaceSubClass = 1, 2546 .bInterfaceProtocol = 0, 2547 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2548 /* Logitech, Webcam B910 */ 2549 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2550 | USB_DEVICE_ID_MATCH_INT_INFO, 2551 .idVendor = 0x046d, 2552 .idProduct = 0x0823, 2553 .bInterfaceClass = USB_CLASS_VIDEO, 2554 .bInterfaceSubClass = 1, 2555 .bInterfaceProtocol = 0, 2556 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2557 /* Logitech Quickcam Fusion */ 2558 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2559 | USB_DEVICE_ID_MATCH_INT_INFO, 2560 .idVendor = 0x046d, 2561 .idProduct = 0x08c1, 2562 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2563 .bInterfaceSubClass = 1, 2564 .bInterfaceProtocol = 0 }, 2565 /* Logitech Quickcam Orbit MP */ 2566 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2567 | USB_DEVICE_ID_MATCH_INT_INFO, 2568 .idVendor = 0x046d, 2569 .idProduct = 0x08c2, 2570 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2571 .bInterfaceSubClass = 1, 2572 .bInterfaceProtocol = 0 }, 2573 /* Logitech Quickcam Pro for Notebook */ 2574 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2575 | USB_DEVICE_ID_MATCH_INT_INFO, 2576 .idVendor = 0x046d, 2577 .idProduct = 0x08c3, 2578 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2579 .bInterfaceSubClass = 1, 2580 .bInterfaceProtocol = 0 }, 2581 /* Logitech Quickcam Pro 5000 */ 2582 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2583 | USB_DEVICE_ID_MATCH_INT_INFO, 2584 .idVendor = 0x046d, 2585 .idProduct = 0x08c5, 2586 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2587 .bInterfaceSubClass = 1, 2588 .bInterfaceProtocol = 0 }, 2589 /* Logitech Quickcam OEM Dell Notebook */ 2590 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2591 | USB_DEVICE_ID_MATCH_INT_INFO, 2592 .idVendor = 0x046d, 2593 .idProduct = 0x08c6, 2594 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2595 .bInterfaceSubClass = 1, 2596 .bInterfaceProtocol = 0 }, 2597 /* Logitech Quickcam OEM Cisco VT Camera II */ 2598 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2599 | USB_DEVICE_ID_MATCH_INT_INFO, 2600 .idVendor = 0x046d, 2601 .idProduct = 0x08c7, 2602 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2603 .bInterfaceSubClass = 1, 2604 .bInterfaceProtocol = 0 }, 2605 /* Logitech HD Pro Webcam C920 */ 2606 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2607 | USB_DEVICE_ID_MATCH_INT_INFO, 2608 .idVendor = 0x046d, 2609 .idProduct = 0x082d, 2610 .bInterfaceClass = USB_CLASS_VIDEO, 2611 .bInterfaceSubClass = 1, 2612 .bInterfaceProtocol = 0, 2613 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT 2614 | UVC_QUIRK_INVALID_DEVICE_SOF) }, 2615 /* Logitech HD Pro Webcam C922 */ 2616 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2617 | USB_DEVICE_ID_MATCH_INT_INFO, 2618 .idVendor = 0x046d, 2619 .idProduct = 0x085c, 2620 .bInterfaceClass = USB_CLASS_VIDEO, 2621 .bInterfaceSubClass = 1, 2622 .bInterfaceProtocol = 0, 2623 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_INVALID_DEVICE_SOF) }, 2624 /* Logitech Rally Bar Huddle */ 2625 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2626 | USB_DEVICE_ID_MATCH_INT_INFO, 2627 .idVendor = 0x046d, 2628 .idProduct = 0x087c, 2629 .bInterfaceClass = USB_CLASS_VIDEO, 2630 .bInterfaceSubClass = 1, 2631 .bInterfaceProtocol = 0, 2632 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2633 /* Logitech Rally Bar */ 2634 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2635 | USB_DEVICE_ID_MATCH_INT_INFO, 2636 .idVendor = 0x046d, 2637 .idProduct = 0x089b, 2638 .bInterfaceClass = USB_CLASS_VIDEO, 2639 .bInterfaceSubClass = 1, 2640 .bInterfaceProtocol = 0, 2641 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2642 /* Logitech Rally Bar Mini */ 2643 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2644 | USB_DEVICE_ID_MATCH_INT_INFO, 2645 .idVendor = 0x046d, 2646 .idProduct = 0x08d3, 2647 .bInterfaceClass = USB_CLASS_VIDEO, 2648 .bInterfaceSubClass = 1, 2649 .bInterfaceProtocol = 0, 2650 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2651 /* Chicony CNF7129 (Asus EEE 100HE) */ 2652 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2653 | USB_DEVICE_ID_MATCH_INT_INFO, 2654 .idVendor = 0x04f2, 2655 .idProduct = 0xb071, 2656 .bInterfaceClass = USB_CLASS_VIDEO, 2657 .bInterfaceSubClass = 1, 2658 .bInterfaceProtocol = 0, 2659 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) }, 2660 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2661 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2662 | USB_DEVICE_ID_MATCH_INT_INFO, 2663 .idVendor = 0x058f, 2664 .idProduct = 0x3820, 2665 .bInterfaceClass = USB_CLASS_VIDEO, 2666 .bInterfaceSubClass = 1, 2667 .bInterfaceProtocol = 0, 2668 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2669 /* Dell XPS m1530 */ 2670 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2671 | USB_DEVICE_ID_MATCH_INT_INFO, 2672 .idVendor = 0x05a9, 2673 .idProduct = 0x2640, 2674 .bInterfaceClass = USB_CLASS_VIDEO, 2675 .bInterfaceSubClass = 1, 2676 .bInterfaceProtocol = 0, 2677 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2678 /* Dell SP2008WFP Monitor */ 2679 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2680 | USB_DEVICE_ID_MATCH_INT_INFO, 2681 .idVendor = 0x05a9, 2682 .idProduct = 0x2641, 2683 .bInterfaceClass = USB_CLASS_VIDEO, 2684 .bInterfaceSubClass = 1, 2685 .bInterfaceProtocol = 0, 2686 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2687 /* Dell Alienware X51 */ 2688 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2689 | USB_DEVICE_ID_MATCH_INT_INFO, 2690 .idVendor = 0x05a9, 2691 .idProduct = 0x2643, 2692 .bInterfaceClass = USB_CLASS_VIDEO, 2693 .bInterfaceSubClass = 1, 2694 .bInterfaceProtocol = 0, 2695 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2696 /* Dell Studio Hybrid 140g (OmniVision webcam) */ 2697 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2698 | USB_DEVICE_ID_MATCH_INT_INFO, 2699 .idVendor = 0x05a9, 2700 .idProduct = 0x264a, 2701 .bInterfaceClass = USB_CLASS_VIDEO, 2702 .bInterfaceSubClass = 1, 2703 .bInterfaceProtocol = 0, 2704 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2705 /* Dell XPS M1330 (OmniVision OV7670 webcam) */ 2706 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2707 | USB_DEVICE_ID_MATCH_INT_INFO, 2708 .idVendor = 0x05a9, 2709 .idProduct = 0x7670, 2710 .bInterfaceClass = USB_CLASS_VIDEO, 2711 .bInterfaceSubClass = 1, 2712 .bInterfaceProtocol = 0, 2713 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2714 /* Apple Built-In iSight */ 2715 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2716 | USB_DEVICE_ID_MATCH_INT_INFO, 2717 .idVendor = 0x05ac, 2718 .idProduct = 0x8501, 2719 .bInterfaceClass = USB_CLASS_VIDEO, 2720 .bInterfaceSubClass = 1, 2721 .bInterfaceProtocol = 0, 2722 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2723 | UVC_QUIRK_BUILTIN_ISIGHT) }, 2724 /* Apple FaceTime HD Camera (Built-In) */ 2725 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2726 | USB_DEVICE_ID_MATCH_INT_INFO, 2727 .idVendor = 0x05ac, 2728 .idProduct = 0x8514, 2729 .bInterfaceClass = USB_CLASS_VIDEO, 2730 .bInterfaceSubClass = 1, 2731 .bInterfaceProtocol = 0, 2732 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2733 /* Apple Built-In iSight via iBridge */ 2734 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2735 | USB_DEVICE_ID_MATCH_INT_INFO, 2736 .idVendor = 0x05ac, 2737 .idProduct = 0x8600, 2738 .bInterfaceClass = USB_CLASS_VIDEO, 2739 .bInterfaceSubClass = 1, 2740 .bInterfaceProtocol = 0, 2741 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2742 /* Foxlink ("HP Webcam" on HP Mini 5103) */ 2743 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2744 | USB_DEVICE_ID_MATCH_INT_INFO, 2745 .idVendor = 0x05c8, 2746 .idProduct = 0x0403, 2747 .bInterfaceClass = USB_CLASS_VIDEO, 2748 .bInterfaceSubClass = 1, 2749 .bInterfaceProtocol = 0, 2750 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2751 /* Genesys Logic USB 2.0 PC Camera */ 2752 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2753 | USB_DEVICE_ID_MATCH_INT_INFO, 2754 .idVendor = 0x05e3, 2755 .idProduct = 0x0505, 2756 .bInterfaceClass = USB_CLASS_VIDEO, 2757 .bInterfaceSubClass = 1, 2758 .bInterfaceProtocol = 0, 2759 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2760 /* Hercules Classic Silver */ 2761 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2762 | USB_DEVICE_ID_MATCH_INT_INFO, 2763 .idVendor = 0x06f8, 2764 .idProduct = 0x300c, 2765 .bInterfaceClass = USB_CLASS_VIDEO, 2766 .bInterfaceSubClass = 1, 2767 .bInterfaceProtocol = 0, 2768 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2769 /* ViMicro Vega */ 2770 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2771 | USB_DEVICE_ID_MATCH_INT_INFO, 2772 .idVendor = 0x0ac8, 2773 .idProduct = 0x332d, 2774 .bInterfaceClass = USB_CLASS_VIDEO, 2775 .bInterfaceSubClass = 1, 2776 .bInterfaceProtocol = 0, 2777 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2778 /* ViMicro - Minoru3D */ 2779 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2780 | USB_DEVICE_ID_MATCH_INT_INFO, 2781 .idVendor = 0x0ac8, 2782 .idProduct = 0x3410, 2783 .bInterfaceClass = USB_CLASS_VIDEO, 2784 .bInterfaceSubClass = 1, 2785 .bInterfaceProtocol = 0, 2786 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2787 /* ViMicro Venus - Minoru3D */ 2788 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2789 | USB_DEVICE_ID_MATCH_INT_INFO, 2790 .idVendor = 0x0ac8, 2791 .idProduct = 0x3420, 2792 .bInterfaceClass = USB_CLASS_VIDEO, 2793 .bInterfaceSubClass = 1, 2794 .bInterfaceProtocol = 0, 2795 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2796 /* Ophir Optronics - SPCAM 620U */ 2797 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2798 | USB_DEVICE_ID_MATCH_INT_INFO, 2799 .idVendor = 0x0bd3, 2800 .idProduct = 0x0555, 2801 .bInterfaceClass = USB_CLASS_VIDEO, 2802 .bInterfaceSubClass = 1, 2803 .bInterfaceProtocol = 0, 2804 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2805 /* MT6227 */ 2806 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2807 | USB_DEVICE_ID_MATCH_INT_INFO, 2808 .idVendor = 0x0e8d, 2809 .idProduct = 0x0004, 2810 .bInterfaceClass = USB_CLASS_VIDEO, 2811 .bInterfaceSubClass = 1, 2812 .bInterfaceProtocol = 0, 2813 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2814 | UVC_QUIRK_PROBE_DEF) }, 2815 /* IMC Networks (Medion Akoya) */ 2816 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2817 | USB_DEVICE_ID_MATCH_INT_INFO, 2818 .idVendor = 0x13d3, 2819 .idProduct = 0x5103, 2820 .bInterfaceClass = USB_CLASS_VIDEO, 2821 .bInterfaceSubClass = 1, 2822 .bInterfaceProtocol = 0, 2823 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2824 /* JMicron USB2.0 XGA WebCam */ 2825 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2826 | USB_DEVICE_ID_MATCH_INT_INFO, 2827 .idVendor = 0x152d, 2828 .idProduct = 0x0310, 2829 .bInterfaceClass = USB_CLASS_VIDEO, 2830 .bInterfaceSubClass = 1, 2831 .bInterfaceProtocol = 0, 2832 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2833 /* Syntek (HP Spartan) */ 2834 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2835 | USB_DEVICE_ID_MATCH_INT_INFO, 2836 .idVendor = 0x174f, 2837 .idProduct = 0x5212, 2838 .bInterfaceClass = USB_CLASS_VIDEO, 2839 .bInterfaceSubClass = 1, 2840 .bInterfaceProtocol = 0, 2841 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2842 /* Syntek (Samsung Q310) */ 2843 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2844 | USB_DEVICE_ID_MATCH_INT_INFO, 2845 .idVendor = 0x174f, 2846 .idProduct = 0x5931, 2847 .bInterfaceClass = USB_CLASS_VIDEO, 2848 .bInterfaceSubClass = 1, 2849 .bInterfaceProtocol = 0, 2850 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2851 /* Syntek (Packard Bell EasyNote MX52 */ 2852 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2853 | USB_DEVICE_ID_MATCH_INT_INFO, 2854 .idVendor = 0x174f, 2855 .idProduct = 0x8a12, 2856 .bInterfaceClass = USB_CLASS_VIDEO, 2857 .bInterfaceSubClass = 1, 2858 .bInterfaceProtocol = 0, 2859 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2860 /* Syntek (Asus F9SG) */ 2861 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2862 | USB_DEVICE_ID_MATCH_INT_INFO, 2863 .idVendor = 0x174f, 2864 .idProduct = 0x8a31, 2865 .bInterfaceClass = USB_CLASS_VIDEO, 2866 .bInterfaceSubClass = 1, 2867 .bInterfaceProtocol = 0, 2868 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2869 /* Syntek (Asus U3S) */ 2870 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2871 | USB_DEVICE_ID_MATCH_INT_INFO, 2872 .idVendor = 0x174f, 2873 .idProduct = 0x8a33, 2874 .bInterfaceClass = USB_CLASS_VIDEO, 2875 .bInterfaceSubClass = 1, 2876 .bInterfaceProtocol = 0, 2877 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2878 /* Syntek (JAOtech Smart Terminal) */ 2879 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2880 | USB_DEVICE_ID_MATCH_INT_INFO, 2881 .idVendor = 0x174f, 2882 .idProduct = 0x8a34, 2883 .bInterfaceClass = USB_CLASS_VIDEO, 2884 .bInterfaceSubClass = 1, 2885 .bInterfaceProtocol = 0, 2886 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2887 /* Miricle 307K */ 2888 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2889 | USB_DEVICE_ID_MATCH_INT_INFO, 2890 .idVendor = 0x17dc, 2891 .idProduct = 0x0202, 2892 .bInterfaceClass = USB_CLASS_VIDEO, 2893 .bInterfaceSubClass = 1, 2894 .bInterfaceProtocol = 0, 2895 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2896 /* Lenovo Thinkpad SL400/SL500 */ 2897 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2898 | USB_DEVICE_ID_MATCH_INT_INFO, 2899 .idVendor = 0x17ef, 2900 .idProduct = 0x480b, 2901 .bInterfaceClass = USB_CLASS_VIDEO, 2902 .bInterfaceSubClass = 1, 2903 .bInterfaceProtocol = 0, 2904 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2905 /* Aveo Technology USB 2.0 Camera */ 2906 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2907 | USB_DEVICE_ID_MATCH_INT_INFO, 2908 .idVendor = 0x1871, 2909 .idProduct = 0x0306, 2910 .bInterfaceClass = USB_CLASS_VIDEO, 2911 .bInterfaceSubClass = 1, 2912 .bInterfaceProtocol = 0, 2913 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2914 | UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2915 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ 2916 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2917 | USB_DEVICE_ID_MATCH_INT_INFO, 2918 .idVendor = 0x1871, 2919 .idProduct = 0x0516, 2920 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2921 .bInterfaceSubClass = 1, 2922 .bInterfaceProtocol = 0 }, 2923 /* Ecamm Pico iMage */ 2924 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2925 | USB_DEVICE_ID_MATCH_INT_INFO, 2926 .idVendor = 0x18cd, 2927 .idProduct = 0xcafe, 2928 .bInterfaceClass = USB_CLASS_VIDEO, 2929 .bInterfaceSubClass = 1, 2930 .bInterfaceProtocol = 0, 2931 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2932 /* Manta MM-353 Plako */ 2933 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2934 | USB_DEVICE_ID_MATCH_INT_INFO, 2935 .idVendor = 0x18ec, 2936 .idProduct = 0x3188, 2937 .bInterfaceClass = USB_CLASS_VIDEO, 2938 .bInterfaceSubClass = 1, 2939 .bInterfaceProtocol = 0, 2940 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2941 /* FSC WebCam V30S */ 2942 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2943 | USB_DEVICE_ID_MATCH_INT_INFO, 2944 .idVendor = 0x18ec, 2945 .idProduct = 0x3288, 2946 .bInterfaceClass = USB_CLASS_VIDEO, 2947 .bInterfaceSubClass = 1, 2948 .bInterfaceProtocol = 0, 2949 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2950 /* Arkmicro unbranded */ 2951 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2952 | USB_DEVICE_ID_MATCH_INT_INFO, 2953 .idVendor = 0x18ec, 2954 .idProduct = 0x3290, 2955 .bInterfaceClass = USB_CLASS_VIDEO, 2956 .bInterfaceSubClass = 1, 2957 .bInterfaceProtocol = 0, 2958 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2959 /* The Imaging Source USB CCD cameras */ 2960 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2961 | USB_DEVICE_ID_MATCH_INT_INFO, 2962 .idVendor = 0x199e, 2963 .idProduct = 0x8102, 2964 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2965 .bInterfaceSubClass = 1, 2966 .bInterfaceProtocol = 0 }, 2967 /* Bodelin ProScopeHR */ 2968 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2969 | USB_DEVICE_ID_MATCH_DEV_HI 2970 | USB_DEVICE_ID_MATCH_INT_INFO, 2971 .idVendor = 0x19ab, 2972 .idProduct = 0x1000, 2973 .bcdDevice_hi = 0x0126, 2974 .bInterfaceClass = USB_CLASS_VIDEO, 2975 .bInterfaceSubClass = 1, 2976 .bInterfaceProtocol = 0, 2977 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) }, 2978 /* MSI StarCam 370i */ 2979 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2980 | USB_DEVICE_ID_MATCH_INT_INFO, 2981 .idVendor = 0x1b3b, 2982 .idProduct = 0x2951, 2983 .bInterfaceClass = USB_CLASS_VIDEO, 2984 .bInterfaceSubClass = 1, 2985 .bInterfaceProtocol = 0, 2986 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2987 /* Generalplus Technology Inc. 808 Camera */ 2988 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2989 | USB_DEVICE_ID_MATCH_INT_INFO, 2990 .idVendor = 0x1b3f, 2991 .idProduct = 0x2002, 2992 .bInterfaceClass = USB_CLASS_VIDEO, 2993 .bInterfaceSubClass = 1, 2994 .bInterfaceProtocol = 0, 2995 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2996 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */ 2997 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2998 | USB_DEVICE_ID_MATCH_INT_INFO, 2999 .idVendor = 0x1bcf, 3000 .idProduct = 0x0b40, 3001 .bInterfaceClass = USB_CLASS_VIDEO, 3002 .bInterfaceSubClass = 1, 3003 .bInterfaceProtocol = 0, 3004 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 3005 .uvc_version = 0x010a, 3006 } }, 3007 /* SiGma Micro USB Web Camera */ 3008 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3009 | USB_DEVICE_ID_MATCH_INT_INFO, 3010 .idVendor = 0x1c4f, 3011 .idProduct = 0x3000, 3012 .bInterfaceClass = USB_CLASS_VIDEO, 3013 .bInterfaceSubClass = 1, 3014 .bInterfaceProtocol = 0, 3015 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 3016 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) }, 3017 /* NXP Semiconductors IR VIDEO */ 3018 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3019 | USB_DEVICE_ID_MATCH_INT_INFO, 3020 .idVendor = 0x1fc9, 3021 .idProduct = 0x009b, 3022 .bInterfaceClass = USB_CLASS_VIDEO, 3023 .bInterfaceSubClass = 1, 3024 .bInterfaceProtocol = 0, 3025 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3026 /* Oculus VR Positional Tracker DK2 */ 3027 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3028 | USB_DEVICE_ID_MATCH_INT_INFO, 3029 .idVendor = 0x2833, 3030 .idProduct = 0x0201, 3031 .bInterfaceClass = USB_CLASS_VIDEO, 3032 .bInterfaceSubClass = 1, 3033 .bInterfaceProtocol = 0, 3034 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3035 /* Oculus VR Rift Sensor */ 3036 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3037 | USB_DEVICE_ID_MATCH_INT_INFO, 3038 .idVendor = 0x2833, 3039 .idProduct = 0x0211, 3040 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3041 .bInterfaceSubClass = 1, 3042 .bInterfaceProtocol = 0, 3043 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3044 /* GEO Semiconductor GC6500 */ 3045 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3046 | USB_DEVICE_ID_MATCH_INT_INFO, 3047 .idVendor = 0x29fe, 3048 .idProduct = 0x4d53, 3049 .bInterfaceClass = USB_CLASS_VIDEO, 3050 .bInterfaceSubClass = 1, 3051 .bInterfaceProtocol = 0, 3052 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) }, 3053 /* Insta360 Link */ 3054 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3055 | USB_DEVICE_ID_MATCH_INT_INFO, 3056 .idVendor = 0x2e1a, 3057 .idProduct = 0x4c01, 3058 .bInterfaceClass = USB_CLASS_VIDEO, 3059 .bInterfaceSubClass = 1, 3060 .bInterfaceProtocol = 0, 3061 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) }, 3062 /* Intel D410/ASR depth camera */ 3063 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3064 | USB_DEVICE_ID_MATCH_INT_INFO, 3065 .idVendor = 0x8086, 3066 .idProduct = 0x0ad2, 3067 .bInterfaceClass = USB_CLASS_VIDEO, 3068 .bInterfaceSubClass = 1, 3069 .bInterfaceProtocol = 0, 3070 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3071 /* Intel D415/ASRC depth camera */ 3072 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3073 | USB_DEVICE_ID_MATCH_INT_INFO, 3074 .idVendor = 0x8086, 3075 .idProduct = 0x0ad3, 3076 .bInterfaceClass = USB_CLASS_VIDEO, 3077 .bInterfaceSubClass = 1, 3078 .bInterfaceProtocol = 0, 3079 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3080 /* Intel D430/AWG depth camera */ 3081 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3082 | USB_DEVICE_ID_MATCH_INT_INFO, 3083 .idVendor = 0x8086, 3084 .idProduct = 0x0ad4, 3085 .bInterfaceClass = USB_CLASS_VIDEO, 3086 .bInterfaceSubClass = 1, 3087 .bInterfaceProtocol = 0, 3088 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3089 /* Intel RealSense D4M */ 3090 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3091 | USB_DEVICE_ID_MATCH_INT_INFO, 3092 .idVendor = 0x8086, 3093 .idProduct = 0x0b03, 3094 .bInterfaceClass = USB_CLASS_VIDEO, 3095 .bInterfaceSubClass = 1, 3096 .bInterfaceProtocol = 0, 3097 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3098 /* Intel D435/AWGC depth camera */ 3099 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3100 | USB_DEVICE_ID_MATCH_INT_INFO, 3101 .idVendor = 0x8086, 3102 .idProduct = 0x0b07, 3103 .bInterfaceClass = USB_CLASS_VIDEO, 3104 .bInterfaceSubClass = 1, 3105 .bInterfaceProtocol = 0, 3106 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3107 /* Intel D435i depth camera */ 3108 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3109 | USB_DEVICE_ID_MATCH_INT_INFO, 3110 .idVendor = 0x8086, 3111 .idProduct = 0x0b3a, 3112 .bInterfaceClass = USB_CLASS_VIDEO, 3113 .bInterfaceSubClass = 1, 3114 .bInterfaceProtocol = 0, 3115 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3116 /* Intel D405 Depth Camera */ 3117 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3118 | USB_DEVICE_ID_MATCH_INT_INFO, 3119 .idVendor = 0x8086, 3120 .idProduct = 0x0b5b, 3121 .bInterfaceClass = USB_CLASS_VIDEO, 3122 .bInterfaceSubClass = 1, 3123 .bInterfaceProtocol = 0, 3124 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3125 /* Intel D455 Depth Camera */ 3126 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3127 | USB_DEVICE_ID_MATCH_INT_INFO, 3128 .idVendor = 0x8086, 3129 .idProduct = 0x0b5c, 3130 .bInterfaceClass = USB_CLASS_VIDEO, 3131 .bInterfaceSubClass = 1, 3132 .bInterfaceProtocol = 0, 3133 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3134 /* Intel D421 Depth Module */ 3135 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3136 | USB_DEVICE_ID_MATCH_INT_INFO, 3137 .idVendor = 0x8086, 3138 .idProduct = 0x1155, 3139 .bInterfaceClass = USB_CLASS_VIDEO, 3140 .bInterfaceSubClass = 1, 3141 .bInterfaceProtocol = 0, 3142 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3143 /* Generic USB Video Class */ 3144 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, 3145 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, 3146 {} 3147 }; 3148 3149 MODULE_DEVICE_TABLE(usb, uvc_ids); 3150 3151 struct uvc_driver uvc_driver = { 3152 .driver = { 3153 .name = "uvcvideo", 3154 .probe = uvc_probe, 3155 .disconnect = uvc_disconnect, 3156 .suspend = uvc_suspend, 3157 .resume = uvc_resume, 3158 .reset_resume = uvc_reset_resume, 3159 .id_table = uvc_ids, 3160 .supports_autosuspend = 1, 3161 }, 3162 }; 3163 3164 static int __init uvc_init(void) 3165 { 3166 int ret; 3167 3168 uvc_debugfs_init(); 3169 3170 ret = usb_register(&uvc_driver.driver); 3171 if (ret < 0) { 3172 uvc_debugfs_cleanup(); 3173 return ret; 3174 } 3175 3176 return 0; 3177 } 3178 3179 static void __exit uvc_cleanup(void) 3180 { 3181 usb_deregister(&uvc_driver.driver); 3182 uvc_debugfs_cleanup(); 3183 } 3184 3185 module_init(uvc_init); 3186 module_exit(uvc_cleanup); 3187 3188 MODULE_AUTHOR(DRIVER_AUTHOR); 3189 MODULE_DESCRIPTION(DRIVER_DESC); 3190 MODULE_LICENSE("GPL"); 3191 MODULE_VERSION(DRIVER_VERSION); 3192 3193