1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * uvc_driver.c -- USB Video Class driver 4 * 5 * Copyright (C) 2005-2010 6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com) 7 */ 8 9 #include <linux/atomic.h> 10 #include <linux/bits.h> 11 #include <linux/gpio/consumer.h> 12 #include <linux/kernel.h> 13 #include <linux/list.h> 14 #include <linux/module.h> 15 #include <linux/slab.h> 16 #include <linux/usb.h> 17 #include <linux/usb/quirks.h> 18 #include <linux/usb/uvc.h> 19 #include <linux/videodev2.h> 20 #include <linux/vmalloc.h> 21 #include <linux/wait.h> 22 #include <asm/unaligned.h> 23 24 #include <media/v4l2-common.h> 25 #include <media/v4l2-ioctl.h> 26 27 #include "uvcvideo.h" 28 29 #define DRIVER_AUTHOR "Laurent Pinchart " \ 30 "<laurent.pinchart@ideasonboard.com>" 31 #define DRIVER_DESC "USB Video Class driver" 32 33 unsigned int uvc_clock_param = CLOCK_MONOTONIC; 34 unsigned int uvc_hw_timestamps_param; 35 unsigned int uvc_no_drop_param; 36 static unsigned int uvc_quirks_param = -1; 37 unsigned int uvc_dbg_param; 38 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; 39 40 /* ------------------------------------------------------------------------ 41 * Utility functions 42 */ 43 44 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 45 u8 epaddr) 46 { 47 struct usb_host_endpoint *ep; 48 unsigned int i; 49 50 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 51 ep = &alts->endpoint[i]; 52 if (ep->desc.bEndpointAddress == epaddr) 53 return ep; 54 } 55 56 return NULL; 57 } 58 59 static enum v4l2_colorspace uvc_colorspace(const u8 primaries) 60 { 61 static const enum v4l2_colorspace colorprimaries[] = { 62 V4L2_COLORSPACE_SRGB, /* Unspecified */ 63 V4L2_COLORSPACE_SRGB, 64 V4L2_COLORSPACE_470_SYSTEM_M, 65 V4L2_COLORSPACE_470_SYSTEM_BG, 66 V4L2_COLORSPACE_SMPTE170M, 67 V4L2_COLORSPACE_SMPTE240M, 68 }; 69 70 if (primaries < ARRAY_SIZE(colorprimaries)) 71 return colorprimaries[primaries]; 72 73 return V4L2_COLORSPACE_SRGB; /* Reserved */ 74 } 75 76 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics) 77 { 78 /* 79 * V4L2 does not currently have definitions for all possible values of 80 * UVC transfer characteristics. If v4l2_xfer_func is extended with new 81 * values, the mapping below should be updated. 82 * 83 * Substitutions are taken from the mapping given for 84 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h. 85 */ 86 static const enum v4l2_xfer_func xfer_funcs[] = { 87 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */ 88 V4L2_XFER_FUNC_709, 89 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */ 90 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */ 91 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */ 92 V4L2_XFER_FUNC_SMPTE240M, 93 V4L2_XFER_FUNC_NONE, 94 V4L2_XFER_FUNC_SRGB, 95 }; 96 97 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs)) 98 return xfer_funcs[transfer_characteristics]; 99 100 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */ 101 } 102 103 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients) 104 { 105 /* 106 * V4L2 does not currently have definitions for all possible values of 107 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new 108 * values, the mapping below should be updated. 109 * 110 * Substitutions are taken from the mapping given for 111 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h. 112 * 113 * FCC is assumed to be close enough to 601. 114 */ 115 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = { 116 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */ 117 V4L2_YCBCR_ENC_709, 118 V4L2_YCBCR_ENC_601, /* Substitution for FCC */ 119 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */ 120 V4L2_YCBCR_ENC_601, 121 V4L2_YCBCR_ENC_SMPTE240M, 122 }; 123 124 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs)) 125 return ycbcr_encs[matrix_coefficients]; 126 127 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */ 128 } 129 130 /* ------------------------------------------------------------------------ 131 * Terminal and unit management 132 */ 133 134 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 135 { 136 struct uvc_entity *entity; 137 138 list_for_each_entry(entity, &dev->entities, list) { 139 if (entity->id == id) 140 return entity; 141 } 142 143 return NULL; 144 } 145 146 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 147 int id, struct uvc_entity *entity) 148 { 149 unsigned int i; 150 151 if (entity == NULL) 152 entity = list_entry(&dev->entities, struct uvc_entity, list); 153 154 list_for_each_entry_continue(entity, &dev->entities, list) { 155 for (i = 0; i < entity->bNrInPins; ++i) 156 if (entity->baSourceID[i] == id) 157 return entity; 158 } 159 160 return NULL; 161 } 162 163 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) 164 { 165 struct uvc_streaming *stream; 166 167 list_for_each_entry(stream, &dev->streams, list) { 168 if (stream->header.bTerminalLink == id) 169 return stream; 170 } 171 172 return NULL; 173 } 174 175 /* ------------------------------------------------------------------------ 176 * Streaming Object Management 177 */ 178 179 static void uvc_stream_delete(struct uvc_streaming *stream) 180 { 181 if (stream->async_wq) 182 destroy_workqueue(stream->async_wq); 183 184 mutex_destroy(&stream->mutex); 185 186 usb_put_intf(stream->intf); 187 188 kfree(stream->formats); 189 kfree(stream->header.bmaControls); 190 kfree(stream); 191 } 192 193 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev, 194 struct usb_interface *intf) 195 { 196 struct uvc_streaming *stream; 197 198 stream = kzalloc(sizeof(*stream), GFP_KERNEL); 199 if (stream == NULL) 200 return NULL; 201 202 mutex_init(&stream->mutex); 203 204 stream->dev = dev; 205 stream->intf = usb_get_intf(intf); 206 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 207 208 /* Allocate a stream specific work queue for asynchronous tasks. */ 209 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI, 210 0); 211 if (!stream->async_wq) { 212 uvc_stream_delete(stream); 213 return NULL; 214 } 215 216 return stream; 217 } 218 219 /* ------------------------------------------------------------------------ 220 * Descriptors parsing 221 */ 222 223 static int uvc_parse_format(struct uvc_device *dev, 224 struct uvc_streaming *streaming, struct uvc_format *format, 225 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer, 226 int buflen) 227 { 228 struct usb_interface *intf = streaming->intf; 229 struct usb_host_interface *alts = intf->cur_altsetting; 230 const struct uvc_format_desc *fmtdesc; 231 struct uvc_frame *frame; 232 const unsigned char *start = buffer; 233 unsigned int width_multiplier = 1; 234 unsigned int interval; 235 unsigned int i, n; 236 u8 ftype; 237 238 format->type = buffer[2]; 239 format->index = buffer[3]; 240 format->frames = frames; 241 242 switch (buffer[2]) { 243 case UVC_VS_FORMAT_UNCOMPRESSED: 244 case UVC_VS_FORMAT_FRAME_BASED: 245 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 246 if (buflen < n) { 247 uvc_dbg(dev, DESCR, 248 "device %d videostreaming interface %d FORMAT error\n", 249 dev->udev->devnum, 250 alts->desc.bInterfaceNumber); 251 return -EINVAL; 252 } 253 254 /* Find the format descriptor from its GUID. */ 255 fmtdesc = uvc_format_by_guid(&buffer[5]); 256 257 if (!fmtdesc) { 258 /* 259 * Unknown video formats are not fatal errors, the 260 * caller will skip this descriptor. 261 */ 262 dev_info(&streaming->intf->dev, 263 "Unknown video format %pUl\n", &buffer[5]); 264 return 0; 265 } 266 267 format->fcc = fmtdesc->fcc; 268 format->bpp = buffer[21]; 269 270 /* 271 * Some devices report a format that doesn't match what they 272 * really send. 273 */ 274 if (dev->quirks & UVC_QUIRK_FORCE_Y8) { 275 if (format->fcc == V4L2_PIX_FMT_YUYV) { 276 format->fcc = V4L2_PIX_FMT_GREY; 277 format->bpp = 8; 278 width_multiplier = 2; 279 } 280 } 281 282 /* Some devices report bpp that doesn't match the format. */ 283 if (dev->quirks & UVC_QUIRK_FORCE_BPP) { 284 const struct v4l2_format_info *info = 285 v4l2_format_info(format->fcc); 286 287 if (info) { 288 unsigned int div = info->hdiv * info->vdiv; 289 290 n = info->bpp[0] * div; 291 for (i = 1; i < info->comp_planes; i++) 292 n += info->bpp[i]; 293 294 format->bpp = DIV_ROUND_UP(8 * n, div); 295 } 296 } 297 298 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 299 ftype = UVC_VS_FRAME_UNCOMPRESSED; 300 } else { 301 ftype = UVC_VS_FRAME_FRAME_BASED; 302 if (buffer[27]) 303 format->flags = UVC_FMT_FLAG_COMPRESSED; 304 } 305 break; 306 307 case UVC_VS_FORMAT_MJPEG: 308 if (buflen < 11) { 309 uvc_dbg(dev, DESCR, 310 "device %d videostreaming interface %d FORMAT error\n", 311 dev->udev->devnum, 312 alts->desc.bInterfaceNumber); 313 return -EINVAL; 314 } 315 316 format->fcc = V4L2_PIX_FMT_MJPEG; 317 format->flags = UVC_FMT_FLAG_COMPRESSED; 318 format->bpp = 0; 319 ftype = UVC_VS_FRAME_MJPEG; 320 break; 321 322 case UVC_VS_FORMAT_DV: 323 if (buflen < 9) { 324 uvc_dbg(dev, DESCR, 325 "device %d videostreaming interface %d FORMAT error\n", 326 dev->udev->devnum, 327 alts->desc.bInterfaceNumber); 328 return -EINVAL; 329 } 330 331 if ((buffer[8] & 0x7f) > 2) { 332 uvc_dbg(dev, DESCR, 333 "device %d videostreaming interface %d: unknown DV format %u\n", 334 dev->udev->devnum, 335 alts->desc.bInterfaceNumber, buffer[8]); 336 return -EINVAL; 337 } 338 339 format->fcc = V4L2_PIX_FMT_DV; 340 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 341 format->bpp = 0; 342 ftype = 0; 343 344 /* Create a dummy frame descriptor. */ 345 frame = &frames[0]; 346 memset(frame, 0, sizeof(*frame)); 347 frame->bFrameIntervalType = 1; 348 frame->dwDefaultFrameInterval = 1; 349 frame->dwFrameInterval = *intervals; 350 *(*intervals)++ = 1; 351 format->nframes = 1; 352 break; 353 354 case UVC_VS_FORMAT_MPEG2TS: 355 case UVC_VS_FORMAT_STREAM_BASED: 356 /* Not supported yet. */ 357 default: 358 uvc_dbg(dev, DESCR, 359 "device %d videostreaming interface %d unsupported format %u\n", 360 dev->udev->devnum, alts->desc.bInterfaceNumber, 361 buffer[2]); 362 return -EINVAL; 363 } 364 365 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc); 366 367 buflen -= buffer[0]; 368 buffer += buffer[0]; 369 370 /* 371 * Parse the frame descriptors. Only uncompressed, MJPEG and frame 372 * based formats have frame descriptors. 373 */ 374 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 375 buffer[2] == ftype) { 376 unsigned int maxIntervalIndex; 377 378 frame = &frames[format->nframes]; 379 if (ftype != UVC_VS_FRAME_FRAME_BASED) 380 n = buflen > 25 ? buffer[25] : 0; 381 else 382 n = buflen > 21 ? buffer[21] : 0; 383 384 n = n ? n : 3; 385 386 if (buflen < 26 + 4*n) { 387 uvc_dbg(dev, DESCR, 388 "device %d videostreaming interface %d FRAME error\n", 389 dev->udev->devnum, 390 alts->desc.bInterfaceNumber); 391 return -EINVAL; 392 } 393 394 frame->bFrameIndex = buffer[3]; 395 frame->bmCapabilities = buffer[4]; 396 frame->wWidth = get_unaligned_le16(&buffer[5]) 397 * width_multiplier; 398 frame->wHeight = get_unaligned_le16(&buffer[7]); 399 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 400 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 401 if (ftype != UVC_VS_FRAME_FRAME_BASED) { 402 frame->dwMaxVideoFrameBufferSize = 403 get_unaligned_le32(&buffer[17]); 404 frame->dwDefaultFrameInterval = 405 get_unaligned_le32(&buffer[21]); 406 frame->bFrameIntervalType = buffer[25]; 407 } else { 408 frame->dwMaxVideoFrameBufferSize = 0; 409 frame->dwDefaultFrameInterval = 410 get_unaligned_le32(&buffer[17]); 411 frame->bFrameIntervalType = buffer[21]; 412 } 413 414 /* 415 * Copy the frame intervals. 416 * 417 * Some bogus devices report dwMinFrameInterval equal to 418 * dwMaxFrameInterval and have dwFrameIntervalStep set to 419 * zero. Setting all null intervals to 1 fixes the problem and 420 * some other divisions by zero that could happen. 421 */ 422 frame->dwFrameInterval = *intervals; 423 424 for (i = 0; i < n; ++i) { 425 interval = get_unaligned_le32(&buffer[26+4*i]); 426 (*intervals)[i] = interval ? interval : 1; 427 } 428 429 /* 430 * Apply more fixes, quirks and workarounds to handle incorrect 431 * or broken descriptors. 432 */ 433 434 /* 435 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize 436 * completely. Observed behaviours range from setting the 437 * value to 1.1x the actual frame size to hardwiring the 438 * 16 low bits to 0. This results in a higher than necessary 439 * memory usage as well as a wrong image size information. For 440 * uncompressed formats this can be fixed by computing the 441 * value from the frame size. 442 */ 443 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 444 frame->dwMaxVideoFrameBufferSize = format->bpp 445 * frame->wWidth * frame->wHeight / 8; 446 447 /* 448 * Clamp the default frame interval to the boundaries. A zero 449 * bFrameIntervalType value indicates a continuous frame 450 * interval range, with dwFrameInterval[0] storing the minimum 451 * value and dwFrameInterval[1] storing the maximum value. 452 */ 453 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1; 454 frame->dwDefaultFrameInterval = 455 clamp(frame->dwDefaultFrameInterval, 456 frame->dwFrameInterval[0], 457 frame->dwFrameInterval[maxIntervalIndex]); 458 459 /* 460 * Some devices report frame intervals that are not functional. 461 * If the corresponding quirk is set, restrict operation to the 462 * first interval only. 463 */ 464 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { 465 frame->bFrameIntervalType = 1; 466 (*intervals)[0] = frame->dwDefaultFrameInterval; 467 } 468 469 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n", 470 frame->wWidth, frame->wHeight, 471 10000000 / frame->dwDefaultFrameInterval, 472 (100000000 / frame->dwDefaultFrameInterval) % 10); 473 474 format->nframes++; 475 *intervals += n; 476 477 buflen -= buffer[0]; 478 buffer += buffer[0]; 479 } 480 481 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 482 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 483 buflen -= buffer[0]; 484 buffer += buffer[0]; 485 } 486 487 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 488 buffer[2] == UVC_VS_COLORFORMAT) { 489 if (buflen < 6) { 490 uvc_dbg(dev, DESCR, 491 "device %d videostreaming interface %d COLORFORMAT error\n", 492 dev->udev->devnum, 493 alts->desc.bInterfaceNumber); 494 return -EINVAL; 495 } 496 497 format->colorspace = uvc_colorspace(buffer[3]); 498 format->xfer_func = uvc_xfer_func(buffer[4]); 499 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]); 500 501 buflen -= buffer[0]; 502 buffer += buffer[0]; 503 } else { 504 format->colorspace = V4L2_COLORSPACE_SRGB; 505 } 506 507 return buffer - start; 508 } 509 510 static int uvc_parse_streaming(struct uvc_device *dev, 511 struct usb_interface *intf) 512 { 513 struct uvc_streaming *streaming = NULL; 514 struct uvc_format *format; 515 struct uvc_frame *frame; 516 struct usb_host_interface *alts = &intf->altsetting[0]; 517 const unsigned char *_buffer, *buffer = alts->extra; 518 int _buflen, buflen = alts->extralen; 519 unsigned int nformats = 0, nframes = 0, nintervals = 0; 520 unsigned int size, i, n, p; 521 u32 *interval; 522 u16 psize; 523 int ret = -EINVAL; 524 525 if (intf->cur_altsetting->desc.bInterfaceSubClass 526 != UVC_SC_VIDEOSTREAMING) { 527 uvc_dbg(dev, DESCR, 528 "device %d interface %d isn't a video streaming interface\n", 529 dev->udev->devnum, 530 intf->altsetting[0].desc.bInterfaceNumber); 531 return -EINVAL; 532 } 533 534 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 535 uvc_dbg(dev, DESCR, 536 "device %d interface %d is already claimed\n", 537 dev->udev->devnum, 538 intf->altsetting[0].desc.bInterfaceNumber); 539 return -EINVAL; 540 } 541 542 streaming = uvc_stream_new(dev, intf); 543 if (streaming == NULL) { 544 usb_driver_release_interface(&uvc_driver.driver, intf); 545 return -ENOMEM; 546 } 547 548 /* 549 * The Pico iMage webcam has its class-specific interface descriptors 550 * after the endpoint descriptors. 551 */ 552 if (buflen == 0) { 553 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 554 struct usb_host_endpoint *ep = &alts->endpoint[i]; 555 556 if (ep->extralen == 0) 557 continue; 558 559 if (ep->extralen > 2 && 560 ep->extra[1] == USB_DT_CS_INTERFACE) { 561 uvc_dbg(dev, DESCR, 562 "trying extra data from endpoint %u\n", 563 i); 564 buffer = alts->endpoint[i].extra; 565 buflen = alts->endpoint[i].extralen; 566 break; 567 } 568 } 569 } 570 571 /* Skip the standard interface descriptors. */ 572 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 573 buflen -= buffer[0]; 574 buffer += buffer[0]; 575 } 576 577 if (buflen <= 2) { 578 uvc_dbg(dev, DESCR, 579 "no class-specific streaming interface descriptors found\n"); 580 goto error; 581 } 582 583 /* Parse the header descriptor. */ 584 switch (buffer[2]) { 585 case UVC_VS_OUTPUT_HEADER: 586 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 587 size = 9; 588 break; 589 590 case UVC_VS_INPUT_HEADER: 591 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 592 size = 13; 593 break; 594 595 default: 596 uvc_dbg(dev, DESCR, 597 "device %d videostreaming interface %d HEADER descriptor not found\n", 598 dev->udev->devnum, alts->desc.bInterfaceNumber); 599 goto error; 600 } 601 602 p = buflen >= 4 ? buffer[3] : 0; 603 n = buflen >= size ? buffer[size-1] : 0; 604 605 if (buflen < size + p*n) { 606 uvc_dbg(dev, DESCR, 607 "device %d videostreaming interface %d HEADER descriptor is invalid\n", 608 dev->udev->devnum, alts->desc.bInterfaceNumber); 609 goto error; 610 } 611 612 streaming->header.bNumFormats = p; 613 streaming->header.bEndpointAddress = buffer[6]; 614 if (buffer[2] == UVC_VS_INPUT_HEADER) { 615 streaming->header.bmInfo = buffer[7]; 616 streaming->header.bTerminalLink = buffer[8]; 617 streaming->header.bStillCaptureMethod = buffer[9]; 618 streaming->header.bTriggerSupport = buffer[10]; 619 streaming->header.bTriggerUsage = buffer[11]; 620 } else { 621 streaming->header.bTerminalLink = buffer[7]; 622 } 623 streaming->header.bControlSize = n; 624 625 streaming->header.bmaControls = kmemdup(&buffer[size], p * n, 626 GFP_KERNEL); 627 if (streaming->header.bmaControls == NULL) { 628 ret = -ENOMEM; 629 goto error; 630 } 631 632 buflen -= buffer[0]; 633 buffer += buffer[0]; 634 635 _buffer = buffer; 636 _buflen = buflen; 637 638 /* Count the format and frame descriptors. */ 639 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 640 switch (_buffer[2]) { 641 case UVC_VS_FORMAT_UNCOMPRESSED: 642 case UVC_VS_FORMAT_MJPEG: 643 case UVC_VS_FORMAT_FRAME_BASED: 644 nformats++; 645 break; 646 647 case UVC_VS_FORMAT_DV: 648 /* 649 * DV format has no frame descriptor. We will create a 650 * dummy frame descriptor with a dummy frame interval. 651 */ 652 nformats++; 653 nframes++; 654 nintervals++; 655 break; 656 657 case UVC_VS_FORMAT_MPEG2TS: 658 case UVC_VS_FORMAT_STREAM_BASED: 659 uvc_dbg(dev, DESCR, 660 "device %d videostreaming interface %d FORMAT %u is not supported\n", 661 dev->udev->devnum, 662 alts->desc.bInterfaceNumber, _buffer[2]); 663 break; 664 665 case UVC_VS_FRAME_UNCOMPRESSED: 666 case UVC_VS_FRAME_MJPEG: 667 nframes++; 668 if (_buflen > 25) 669 nintervals += _buffer[25] ? _buffer[25] : 3; 670 break; 671 672 case UVC_VS_FRAME_FRAME_BASED: 673 nframes++; 674 if (_buflen > 21) 675 nintervals += _buffer[21] ? _buffer[21] : 3; 676 break; 677 } 678 679 _buflen -= _buffer[0]; 680 _buffer += _buffer[0]; 681 } 682 683 if (nformats == 0) { 684 uvc_dbg(dev, DESCR, 685 "device %d videostreaming interface %d has no supported formats defined\n", 686 dev->udev->devnum, alts->desc.bInterfaceNumber); 687 goto error; 688 } 689 690 /* 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_entity(u16 type, u16 id, 779 unsigned int num_pads, unsigned int extra_size) 780 { 781 struct uvc_entity *entity; 782 unsigned int num_inputs; 783 unsigned int size; 784 unsigned int i; 785 786 extra_size = roundup(extra_size, sizeof(*entity->pads)); 787 if (num_pads) 788 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1; 789 else 790 num_inputs = 0; 791 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads 792 + num_inputs; 793 entity = kzalloc(size, GFP_KERNEL); 794 if (entity == NULL) 795 return NULL; 796 797 entity->id = id; 798 entity->type = type; 799 800 /* 801 * Set the GUID for standard entity types. For extension units, the GUID 802 * is initialized by the caller. 803 */ 804 switch (type) { 805 case UVC_EXT_GPIO_UNIT: 806 memcpy(entity->guid, uvc_gpio_guid, 16); 807 break; 808 case UVC_ITT_CAMERA: 809 memcpy(entity->guid, uvc_camera_guid, 16); 810 break; 811 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 812 memcpy(entity->guid, uvc_media_transport_input_guid, 16); 813 break; 814 case UVC_VC_PROCESSING_UNIT: 815 memcpy(entity->guid, uvc_processing_guid, 16); 816 break; 817 } 818 819 entity->num_links = 0; 820 entity->num_pads = num_pads; 821 entity->pads = ((void *)(entity + 1)) + extra_size; 822 823 for (i = 0; i < num_inputs; ++i) 824 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 825 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads) 826 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; 827 828 entity->bNrInPins = num_inputs; 829 entity->baSourceID = (u8 *)(&entity->pads[num_pads]); 830 831 return entity; 832 } 833 834 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity, 835 const char *type_name, u8 string_id) 836 { 837 int ret; 838 839 /* 840 * First attempt to read the entity name from the device. If the entity 841 * has no associated string, or if reading the string fails (most 842 * likely due to a buggy firmware), fall back to default names based on 843 * the entity type. 844 */ 845 if (string_id) { 846 ret = usb_string(dev->udev, string_id, entity->name, 847 sizeof(entity->name)); 848 if (!ret) 849 return; 850 } 851 852 sprintf(entity->name, "%s %u", type_name, entity->id); 853 } 854 855 /* Parse vendor-specific extensions. */ 856 static int uvc_parse_vendor_control(struct uvc_device *dev, 857 const unsigned char *buffer, int buflen) 858 { 859 struct usb_device *udev = dev->udev; 860 struct usb_host_interface *alts = dev->intf->cur_altsetting; 861 struct uvc_entity *unit; 862 unsigned int n, p; 863 int handled = 0; 864 865 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 866 case 0x046d: /* Logitech */ 867 if (buffer[1] != 0x41 || buffer[2] != 0x01) 868 break; 869 870 /* 871 * Logitech implements several vendor specific functions 872 * through vendor specific extension units (LXU). 873 * 874 * The LXU descriptors are similar to XU descriptors 875 * (see "USB Device Video Class for Video Devices", section 876 * 3.7.2.6 "Extension Unit Descriptor") with the following 877 * differences: 878 * 879 * ---------------------------------------------------------- 880 * 0 bLength 1 Number 881 * Size of this descriptor, in bytes: 24+p+n*2 882 * ---------------------------------------------------------- 883 * 23+p+n bmControlsType N Bitmap 884 * Individual bits in the set are defined: 885 * 0: Absolute 886 * 1: Relative 887 * 888 * This bitset is mapped exactly the same as bmControls. 889 * ---------------------------------------------------------- 890 * 23+p+n*2 bReserved 1 Boolean 891 * ---------------------------------------------------------- 892 * 24+p+n*2 iExtension 1 Index 893 * Index of a string descriptor that describes this 894 * extension unit. 895 * ---------------------------------------------------------- 896 */ 897 p = buflen >= 22 ? buffer[21] : 0; 898 n = buflen >= 25 + p ? buffer[22+p] : 0; 899 900 if (buflen < 25 + p + 2*n) { 901 uvc_dbg(dev, DESCR, 902 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 903 udev->devnum, alts->desc.bInterfaceNumber); 904 break; 905 } 906 907 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], 908 p + 1, 2*n); 909 if (unit == NULL) 910 return -ENOMEM; 911 912 memcpy(unit->guid, &buffer[4], 16); 913 unit->extension.bNumControls = buffer[20]; 914 memcpy(unit->baSourceID, &buffer[22], p); 915 unit->extension.bControlSize = buffer[22+p]; 916 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 917 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit) 918 + n; 919 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 920 921 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]); 922 923 list_add_tail(&unit->list, &dev->entities); 924 handled = 1; 925 break; 926 } 927 928 return handled; 929 } 930 931 static int uvc_parse_standard_control(struct uvc_device *dev, 932 const unsigned char *buffer, int buflen) 933 { 934 struct usb_device *udev = dev->udev; 935 struct uvc_entity *unit, *term; 936 struct usb_interface *intf; 937 struct usb_host_interface *alts = dev->intf->cur_altsetting; 938 unsigned int i, n, p, len; 939 const char *type_name; 940 u16 type; 941 942 switch (buffer[2]) { 943 case UVC_VC_HEADER: 944 n = buflen >= 12 ? buffer[11] : 0; 945 946 if (buflen < 12 + n) { 947 uvc_dbg(dev, DESCR, 948 "device %d videocontrol interface %d HEADER error\n", 949 udev->devnum, alts->desc.bInterfaceNumber); 950 return -EINVAL; 951 } 952 953 dev->uvc_version = get_unaligned_le16(&buffer[3]); 954 dev->clock_frequency = get_unaligned_le32(&buffer[7]); 955 956 /* Parse all USB Video Streaming interfaces. */ 957 for (i = 0; i < n; ++i) { 958 intf = usb_ifnum_to_if(udev, buffer[12+i]); 959 if (intf == NULL) { 960 uvc_dbg(dev, DESCR, 961 "device %d interface %d doesn't exists\n", 962 udev->devnum, i); 963 continue; 964 } 965 966 uvc_parse_streaming(dev, intf); 967 } 968 break; 969 970 case UVC_VC_INPUT_TERMINAL: 971 if (buflen < 8) { 972 uvc_dbg(dev, DESCR, 973 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 974 udev->devnum, alts->desc.bInterfaceNumber); 975 return -EINVAL; 976 } 977 978 /* 979 * Reject invalid terminal types that would cause issues: 980 * 981 * - The high byte must be non-zero, otherwise it would be 982 * confused with a unit. 983 * 984 * - Bit 15 must be 0, as we use it internally as a terminal 985 * direction flag. 986 * 987 * Other unknown types are accepted. 988 */ 989 type = get_unaligned_le16(&buffer[4]); 990 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) { 991 uvc_dbg(dev, DESCR, 992 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 993 udev->devnum, alts->desc.bInterfaceNumber, 994 buffer[3], type); 995 return 0; 996 } 997 998 n = 0; 999 p = 0; 1000 len = 8; 1001 1002 if (type == UVC_ITT_CAMERA) { 1003 n = buflen >= 15 ? buffer[14] : 0; 1004 len = 15; 1005 1006 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1007 n = buflen >= 9 ? buffer[8] : 0; 1008 p = buflen >= 10 + n ? buffer[9+n] : 0; 1009 len = 10; 1010 } 1011 1012 if (buflen < len + n + p) { 1013 uvc_dbg(dev, DESCR, 1014 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1015 udev->devnum, alts->desc.bInterfaceNumber); 1016 return -EINVAL; 1017 } 1018 1019 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], 1020 1, n + p); 1021 if (term == NULL) 1022 return -ENOMEM; 1023 1024 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 1025 term->camera.bControlSize = n; 1026 term->camera.bmControls = (u8 *)term + sizeof(*term); 1027 term->camera.wObjectiveFocalLengthMin = 1028 get_unaligned_le16(&buffer[8]); 1029 term->camera.wObjectiveFocalLengthMax = 1030 get_unaligned_le16(&buffer[10]); 1031 term->camera.wOcularFocalLength = 1032 get_unaligned_le16(&buffer[12]); 1033 memcpy(term->camera.bmControls, &buffer[15], n); 1034 } else if (UVC_ENTITY_TYPE(term) == 1035 UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1036 term->media.bControlSize = n; 1037 term->media.bmControls = (u8 *)term + sizeof(*term); 1038 term->media.bTransportModeSize = p; 1039 term->media.bmTransportModes = (u8 *)term 1040 + sizeof(*term) + n; 1041 memcpy(term->media.bmControls, &buffer[9], n); 1042 memcpy(term->media.bmTransportModes, &buffer[10+n], p); 1043 } 1044 1045 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 1046 type_name = "Camera"; 1047 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 1048 type_name = "Media"; 1049 else 1050 type_name = "Input"; 1051 1052 uvc_entity_set_name(dev, term, type_name, buffer[7]); 1053 1054 list_add_tail(&term->list, &dev->entities); 1055 break; 1056 1057 case UVC_VC_OUTPUT_TERMINAL: 1058 if (buflen < 9) { 1059 uvc_dbg(dev, DESCR, 1060 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n", 1061 udev->devnum, alts->desc.bInterfaceNumber); 1062 return -EINVAL; 1063 } 1064 1065 /* 1066 * Make sure the terminal type MSB is not null, otherwise it 1067 * could be confused with a unit. 1068 */ 1069 type = get_unaligned_le16(&buffer[4]); 1070 if ((type & 0xff00) == 0) { 1071 uvc_dbg(dev, DESCR, 1072 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1073 udev->devnum, alts->desc.bInterfaceNumber, 1074 buffer[3], type); 1075 return 0; 1076 } 1077 1078 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], 1079 1, 0); 1080 if (term == NULL) 1081 return -ENOMEM; 1082 1083 memcpy(term->baSourceID, &buffer[7], 1); 1084 1085 uvc_entity_set_name(dev, term, "Output", buffer[8]); 1086 1087 list_add_tail(&term->list, &dev->entities); 1088 break; 1089 1090 case UVC_VC_SELECTOR_UNIT: 1091 p = buflen >= 5 ? buffer[4] : 0; 1092 1093 if (buflen < 5 || buflen < 6 + p) { 1094 uvc_dbg(dev, DESCR, 1095 "device %d videocontrol interface %d SELECTOR_UNIT error\n", 1096 udev->devnum, alts->desc.bInterfaceNumber); 1097 return -EINVAL; 1098 } 1099 1100 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); 1101 if (unit == NULL) 1102 return -ENOMEM; 1103 1104 memcpy(unit->baSourceID, &buffer[5], p); 1105 1106 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]); 1107 1108 list_add_tail(&unit->list, &dev->entities); 1109 break; 1110 1111 case UVC_VC_PROCESSING_UNIT: 1112 n = buflen >= 8 ? buffer[7] : 0; 1113 p = dev->uvc_version >= 0x0110 ? 10 : 9; 1114 1115 if (buflen < p + n) { 1116 uvc_dbg(dev, DESCR, 1117 "device %d videocontrol interface %d PROCESSING_UNIT error\n", 1118 udev->devnum, alts->desc.bInterfaceNumber); 1119 return -EINVAL; 1120 } 1121 1122 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); 1123 if (unit == NULL) 1124 return -ENOMEM; 1125 1126 memcpy(unit->baSourceID, &buffer[4], 1); 1127 unit->processing.wMaxMultiplier = 1128 get_unaligned_le16(&buffer[5]); 1129 unit->processing.bControlSize = buffer[7]; 1130 unit->processing.bmControls = (u8 *)unit + sizeof(*unit); 1131 memcpy(unit->processing.bmControls, &buffer[8], n); 1132 if (dev->uvc_version >= 0x0110) 1133 unit->processing.bmVideoStandards = buffer[9+n]; 1134 1135 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]); 1136 1137 list_add_tail(&unit->list, &dev->entities); 1138 break; 1139 1140 case UVC_VC_EXTENSION_UNIT: 1141 p = buflen >= 22 ? buffer[21] : 0; 1142 n = buflen >= 24 + p ? buffer[22+p] : 0; 1143 1144 if (buflen < 24 + p + n) { 1145 uvc_dbg(dev, DESCR, 1146 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 1147 udev->devnum, alts->desc.bInterfaceNumber); 1148 return -EINVAL; 1149 } 1150 1151 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); 1152 if (unit == NULL) 1153 return -ENOMEM; 1154 1155 memcpy(unit->guid, &buffer[4], 16); 1156 unit->extension.bNumControls = buffer[20]; 1157 memcpy(unit->baSourceID, &buffer[22], p); 1158 unit->extension.bControlSize = buffer[22+p]; 1159 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 1160 memcpy(unit->extension.bmControls, &buffer[23+p], n); 1161 1162 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]); 1163 1164 list_add_tail(&unit->list, &dev->entities); 1165 break; 1166 1167 default: 1168 uvc_dbg(dev, DESCR, 1169 "Found an unknown CS_INTERFACE descriptor (%u)\n", 1170 buffer[2]); 1171 break; 1172 } 1173 1174 return 0; 1175 } 1176 1177 static int uvc_parse_control(struct uvc_device *dev) 1178 { 1179 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1180 const unsigned char *buffer = alts->extra; 1181 int buflen = alts->extralen; 1182 int ret; 1183 1184 /* 1185 * Parse the default alternate setting only, as the UVC specification 1186 * defines a single alternate setting, the default alternate setting 1187 * zero. 1188 */ 1189 1190 while (buflen > 2) { 1191 if (uvc_parse_vendor_control(dev, buffer, buflen) || 1192 buffer[1] != USB_DT_CS_INTERFACE) 1193 goto next_descriptor; 1194 1195 ret = uvc_parse_standard_control(dev, buffer, buflen); 1196 if (ret < 0) 1197 return ret; 1198 1199 next_descriptor: 1200 buflen -= buffer[0]; 1201 buffer += buffer[0]; 1202 } 1203 1204 /* 1205 * Check if the optional status endpoint is present. Built-in iSight 1206 * webcams have an interrupt endpoint but spit proprietary data that 1207 * don't conform to the UVC status endpoint messages. Don't try to 1208 * handle the interrupt endpoint for those cameras. 1209 */ 1210 if (alts->desc.bNumEndpoints == 1 && 1211 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1212 struct usb_host_endpoint *ep = &alts->endpoint[0]; 1213 struct usb_endpoint_descriptor *desc = &ep->desc; 1214 1215 if (usb_endpoint_is_int_in(desc) && 1216 le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1217 desc->bInterval != 0) { 1218 uvc_dbg(dev, DESCR, 1219 "Found a Status endpoint (addr %02x)\n", 1220 desc->bEndpointAddress); 1221 dev->int_ep = ep; 1222 } 1223 } 1224 1225 return 0; 1226 } 1227 1228 /* ----------------------------------------------------------------------------- 1229 * Privacy GPIO 1230 */ 1231 1232 static void uvc_gpio_event(struct uvc_device *dev) 1233 { 1234 struct uvc_entity *unit = dev->gpio_unit; 1235 struct uvc_video_chain *chain; 1236 u8 new_val; 1237 1238 if (!unit) 1239 return; 1240 1241 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy); 1242 1243 /* GPIO entities are always on the first chain. */ 1244 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list); 1245 uvc_ctrl_status_event(chain, unit->controls, &new_val); 1246 } 1247 1248 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity, 1249 u8 cs, void *data, u16 size) 1250 { 1251 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1) 1252 return -EINVAL; 1253 1254 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy); 1255 1256 return 0; 1257 } 1258 1259 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity, 1260 u8 cs, u8 *caps) 1261 { 1262 if (cs != UVC_CT_PRIVACY_CONTROL) 1263 return -EINVAL; 1264 1265 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE; 1266 return 0; 1267 } 1268 1269 static irqreturn_t uvc_gpio_irq(int irq, void *data) 1270 { 1271 struct uvc_device *dev = data; 1272 1273 uvc_gpio_event(dev); 1274 return IRQ_HANDLED; 1275 } 1276 1277 static int uvc_gpio_parse(struct uvc_device *dev) 1278 { 1279 struct uvc_entity *unit; 1280 struct gpio_desc *gpio_privacy; 1281 int irq; 1282 1283 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy", 1284 GPIOD_IN); 1285 if (IS_ERR_OR_NULL(gpio_privacy)) 1286 return PTR_ERR_OR_ZERO(gpio_privacy); 1287 1288 irq = gpiod_to_irq(gpio_privacy); 1289 if (irq < 0) 1290 return dev_err_probe(&dev->udev->dev, irq, 1291 "No IRQ for privacy GPIO\n"); 1292 1293 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1); 1294 if (!unit) 1295 return -ENOMEM; 1296 1297 unit->gpio.gpio_privacy = gpio_privacy; 1298 unit->gpio.irq = irq; 1299 unit->gpio.bControlSize = 1; 1300 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit); 1301 unit->gpio.bmControls[0] = 1; 1302 unit->get_cur = uvc_gpio_get_cur; 1303 unit->get_info = uvc_gpio_get_info; 1304 strscpy(unit->name, "GPIO", sizeof(unit->name)); 1305 1306 list_add_tail(&unit->list, &dev->entities); 1307 1308 dev->gpio_unit = unit; 1309 1310 return 0; 1311 } 1312 1313 static int uvc_gpio_init_irq(struct uvc_device *dev) 1314 { 1315 struct uvc_entity *unit = dev->gpio_unit; 1316 1317 if (!unit || unit->gpio.irq < 0) 1318 return 0; 1319 1320 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL, 1321 uvc_gpio_irq, 1322 IRQF_ONESHOT | IRQF_TRIGGER_FALLING | 1323 IRQF_TRIGGER_RISING, 1324 "uvc_privacy_gpio", dev); 1325 } 1326 1327 /* ------------------------------------------------------------------------ 1328 * UVC device scan 1329 */ 1330 1331 /* 1332 * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1333 * and containing the following units: 1334 * 1335 * - one or more Output Terminals (USB Streaming or Display) 1336 * - zero or one Processing Unit 1337 * - zero, one or more single-input Selector Units 1338 * - zero or one multiple-input Selector Units, provided all inputs are 1339 * connected to input terminals 1340 * - zero, one or mode single-input Extension Units 1341 * - one or more Input Terminals (Camera, External or USB Streaming) 1342 * 1343 * The terminal and units must match on of the following structures: 1344 * 1345 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 1346 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 1347 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 1348 * 1349 * +---------+ +---------+ -> OTT_*(0) 1350 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 1351 * +---------+ +---------+ -> OTT_*(n) 1352 * 1353 * The Processing Unit and Extension Units can be in any order. Additional 1354 * Extension Units connected to the main chain as single-unit branches are 1355 * also supported. Single-input Selector Units are ignored. 1356 */ 1357 static int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1358 struct uvc_entity *entity) 1359 { 1360 switch (UVC_ENTITY_TYPE(entity)) { 1361 case UVC_VC_EXTENSION_UNIT: 1362 uvc_dbg_cont(PROBE, " <- XU %d", entity->id); 1363 1364 if (entity->bNrInPins != 1) { 1365 uvc_dbg(chain->dev, DESCR, 1366 "Extension unit %d has more than 1 input pin\n", 1367 entity->id); 1368 return -1; 1369 } 1370 1371 break; 1372 1373 case UVC_VC_PROCESSING_UNIT: 1374 uvc_dbg_cont(PROBE, " <- PU %d", entity->id); 1375 1376 if (chain->processing != NULL) { 1377 uvc_dbg(chain->dev, DESCR, 1378 "Found multiple Processing Units in chain\n"); 1379 return -1; 1380 } 1381 1382 chain->processing = entity; 1383 break; 1384 1385 case UVC_VC_SELECTOR_UNIT: 1386 uvc_dbg_cont(PROBE, " <- SU %d", entity->id); 1387 1388 /* Single-input selector units are ignored. */ 1389 if (entity->bNrInPins == 1) 1390 break; 1391 1392 if (chain->selector != NULL) { 1393 uvc_dbg(chain->dev, DESCR, 1394 "Found multiple Selector Units in chain\n"); 1395 return -1; 1396 } 1397 1398 chain->selector = entity; 1399 break; 1400 1401 case UVC_ITT_VENDOR_SPECIFIC: 1402 case UVC_ITT_CAMERA: 1403 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1404 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1405 1406 break; 1407 1408 case UVC_OTT_VENDOR_SPECIFIC: 1409 case UVC_OTT_DISPLAY: 1410 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1411 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1412 1413 break; 1414 1415 case UVC_TT_STREAMING: 1416 if (UVC_ENTITY_IS_ITERM(entity)) 1417 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1418 else 1419 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1420 1421 break; 1422 1423 default: 1424 uvc_dbg(chain->dev, DESCR, 1425 "Unsupported entity type 0x%04x found in chain\n", 1426 UVC_ENTITY_TYPE(entity)); 1427 return -1; 1428 } 1429 1430 list_add_tail(&entity->chain, &chain->entities); 1431 return 0; 1432 } 1433 1434 static int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1435 struct uvc_entity *entity, struct uvc_entity *prev) 1436 { 1437 struct uvc_entity *forward; 1438 int found; 1439 1440 /* Forward scan */ 1441 forward = NULL; 1442 found = 0; 1443 1444 while (1) { 1445 forward = uvc_entity_by_reference(chain->dev, entity->id, 1446 forward); 1447 if (forward == NULL) 1448 break; 1449 if (forward == prev) 1450 continue; 1451 if (forward->chain.next || forward->chain.prev) { 1452 uvc_dbg(chain->dev, DESCR, 1453 "Found reference to entity %d already in chain\n", 1454 forward->id); 1455 return -EINVAL; 1456 } 1457 1458 switch (UVC_ENTITY_TYPE(forward)) { 1459 case UVC_VC_EXTENSION_UNIT: 1460 if (forward->bNrInPins != 1) { 1461 uvc_dbg(chain->dev, DESCR, 1462 "Extension unit %d has more than 1 input pin\n", 1463 forward->id); 1464 return -EINVAL; 1465 } 1466 1467 /* 1468 * Some devices reference an output terminal as the 1469 * source of extension units. This is incorrect, as 1470 * output terminals only have an input pin, and thus 1471 * can't be connected to any entity in the forward 1472 * direction. The resulting topology would cause issues 1473 * when registering the media controller graph. To 1474 * avoid this problem, connect the extension unit to 1475 * the source of the output terminal instead. 1476 */ 1477 if (UVC_ENTITY_IS_OTERM(entity)) { 1478 struct uvc_entity *source; 1479 1480 source = uvc_entity_by_id(chain->dev, 1481 entity->baSourceID[0]); 1482 if (!source) { 1483 uvc_dbg(chain->dev, DESCR, 1484 "Can't connect extension unit %u in chain\n", 1485 forward->id); 1486 break; 1487 } 1488 1489 forward->baSourceID[0] = source->id; 1490 } 1491 1492 list_add_tail(&forward->chain, &chain->entities); 1493 if (!found) 1494 uvc_dbg_cont(PROBE, " (->"); 1495 1496 uvc_dbg_cont(PROBE, " XU %d", forward->id); 1497 found = 1; 1498 break; 1499 1500 case UVC_OTT_VENDOR_SPECIFIC: 1501 case UVC_OTT_DISPLAY: 1502 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1503 case UVC_TT_STREAMING: 1504 if (UVC_ENTITY_IS_ITERM(forward)) { 1505 uvc_dbg(chain->dev, DESCR, 1506 "Unsupported input terminal %u\n", 1507 forward->id); 1508 return -EINVAL; 1509 } 1510 1511 if (UVC_ENTITY_IS_OTERM(entity)) { 1512 uvc_dbg(chain->dev, DESCR, 1513 "Unsupported connection between output terminals %u and %u\n", 1514 entity->id, forward->id); 1515 break; 1516 } 1517 1518 list_add_tail(&forward->chain, &chain->entities); 1519 if (!found) 1520 uvc_dbg_cont(PROBE, " (->"); 1521 1522 uvc_dbg_cont(PROBE, " OT %d", forward->id); 1523 found = 1; 1524 break; 1525 } 1526 } 1527 if (found) 1528 uvc_dbg_cont(PROBE, ")"); 1529 1530 return 0; 1531 } 1532 1533 static int uvc_scan_chain_backward(struct uvc_video_chain *chain, 1534 struct uvc_entity **_entity) 1535 { 1536 struct uvc_entity *entity = *_entity; 1537 struct uvc_entity *term; 1538 int id = -EINVAL, i; 1539 1540 switch (UVC_ENTITY_TYPE(entity)) { 1541 case UVC_VC_EXTENSION_UNIT: 1542 case UVC_VC_PROCESSING_UNIT: 1543 id = entity->baSourceID[0]; 1544 break; 1545 1546 case UVC_VC_SELECTOR_UNIT: 1547 /* Single-input selector units are ignored. */ 1548 if (entity->bNrInPins == 1) { 1549 id = entity->baSourceID[0]; 1550 break; 1551 } 1552 1553 uvc_dbg_cont(PROBE, " <- IT"); 1554 1555 chain->selector = entity; 1556 for (i = 0; i < entity->bNrInPins; ++i) { 1557 id = entity->baSourceID[i]; 1558 term = uvc_entity_by_id(chain->dev, id); 1559 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1560 uvc_dbg(chain->dev, DESCR, 1561 "Selector unit %d input %d isn't connected to an input terminal\n", 1562 entity->id, i); 1563 return -1; 1564 } 1565 1566 if (term->chain.next || term->chain.prev) { 1567 uvc_dbg(chain->dev, DESCR, 1568 "Found reference to entity %d already in chain\n", 1569 term->id); 1570 return -EINVAL; 1571 } 1572 1573 uvc_dbg_cont(PROBE, " %d", term->id); 1574 1575 list_add_tail(&term->chain, &chain->entities); 1576 uvc_scan_chain_forward(chain, term, entity); 1577 } 1578 1579 uvc_dbg_cont(PROBE, "\n"); 1580 1581 id = 0; 1582 break; 1583 1584 case UVC_ITT_VENDOR_SPECIFIC: 1585 case UVC_ITT_CAMERA: 1586 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1587 case UVC_OTT_VENDOR_SPECIFIC: 1588 case UVC_OTT_DISPLAY: 1589 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1590 case UVC_TT_STREAMING: 1591 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 1592 break; 1593 } 1594 1595 if (id <= 0) { 1596 *_entity = NULL; 1597 return id; 1598 } 1599 1600 entity = uvc_entity_by_id(chain->dev, id); 1601 if (entity == NULL) { 1602 uvc_dbg(chain->dev, DESCR, 1603 "Found reference to unknown entity %d\n", id); 1604 return -EINVAL; 1605 } 1606 1607 *_entity = entity; 1608 return 0; 1609 } 1610 1611 static int uvc_scan_chain(struct uvc_video_chain *chain, 1612 struct uvc_entity *term) 1613 { 1614 struct uvc_entity *entity, *prev; 1615 1616 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:"); 1617 1618 entity = term; 1619 prev = NULL; 1620 1621 while (entity != NULL) { 1622 /* Entity must not be part of an existing chain */ 1623 if (entity->chain.next || entity->chain.prev) { 1624 uvc_dbg(chain->dev, DESCR, 1625 "Found reference to entity %d already in chain\n", 1626 entity->id); 1627 return -EINVAL; 1628 } 1629 1630 /* Process entity */ 1631 if (uvc_scan_chain_entity(chain, entity) < 0) 1632 return -EINVAL; 1633 1634 /* Forward scan */ 1635 if (uvc_scan_chain_forward(chain, entity, prev) < 0) 1636 return -EINVAL; 1637 1638 /* Backward scan */ 1639 prev = entity; 1640 if (uvc_scan_chain_backward(chain, &entity) < 0) 1641 return -EINVAL; 1642 } 1643 1644 return 0; 1645 } 1646 1647 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 1648 char *buffer) 1649 { 1650 struct uvc_entity *term; 1651 unsigned int nterms = 0; 1652 char *p = buffer; 1653 1654 list_for_each_entry(term, terms, chain) { 1655 if (!UVC_ENTITY_IS_TERM(term) || 1656 UVC_TERM_DIRECTION(term) != dir) 1657 continue; 1658 1659 if (nterms) 1660 p += sprintf(p, ","); 1661 if (++nterms >= 4) { 1662 p += sprintf(p, "..."); 1663 break; 1664 } 1665 p += sprintf(p, "%u", term->id); 1666 } 1667 1668 return p - buffer; 1669 } 1670 1671 static const char *uvc_print_chain(struct uvc_video_chain *chain) 1672 { 1673 static char buffer[43]; 1674 char *p = buffer; 1675 1676 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 1677 p += sprintf(p, " -> "); 1678 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 1679 1680 return buffer; 1681 } 1682 1683 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) 1684 { 1685 struct uvc_video_chain *chain; 1686 1687 chain = kzalloc(sizeof(*chain), GFP_KERNEL); 1688 if (chain == NULL) 1689 return NULL; 1690 1691 INIT_LIST_HEAD(&chain->entities); 1692 mutex_init(&chain->ctrl_mutex); 1693 chain->dev = dev; 1694 v4l2_prio_init(&chain->prio); 1695 1696 return chain; 1697 } 1698 1699 /* 1700 * Fallback heuristic for devices that don't connect units and terminals in a 1701 * valid chain. 1702 * 1703 * Some devices have invalid baSourceID references, causing uvc_scan_chain() 1704 * to fail, but if we just take the entities we can find and put them together 1705 * in the most sensible chain we can think of, turns out they do work anyway. 1706 * Note: This heuristic assumes there is a single chain. 1707 * 1708 * At the time of writing, devices known to have such a broken chain are 1709 * - Acer Integrated Camera (5986:055a) 1710 * - Realtek rtl157a7 (0bda:57a7) 1711 */ 1712 static int uvc_scan_fallback(struct uvc_device *dev) 1713 { 1714 struct uvc_video_chain *chain; 1715 struct uvc_entity *iterm = NULL; 1716 struct uvc_entity *oterm = NULL; 1717 struct uvc_entity *entity; 1718 struct uvc_entity *prev; 1719 1720 /* 1721 * Start by locating the input and output terminals. We only support 1722 * devices with exactly one of each for now. 1723 */ 1724 list_for_each_entry(entity, &dev->entities, list) { 1725 if (UVC_ENTITY_IS_ITERM(entity)) { 1726 if (iterm) 1727 return -EINVAL; 1728 iterm = entity; 1729 } 1730 1731 if (UVC_ENTITY_IS_OTERM(entity)) { 1732 if (oterm) 1733 return -EINVAL; 1734 oterm = entity; 1735 } 1736 } 1737 1738 if (iterm == NULL || oterm == NULL) 1739 return -EINVAL; 1740 1741 /* Allocate the chain and fill it. */ 1742 chain = uvc_alloc_chain(dev); 1743 if (chain == NULL) 1744 return -ENOMEM; 1745 1746 if (uvc_scan_chain_entity(chain, oterm) < 0) 1747 goto error; 1748 1749 prev = oterm; 1750 1751 /* 1752 * Add all Processing and Extension Units with two pads. The order 1753 * doesn't matter much, use reverse list traversal to connect units in 1754 * UVC descriptor order as we build the chain from output to input. This 1755 * leads to units appearing in the order meant by the manufacturer for 1756 * the cameras known to require this heuristic. 1757 */ 1758 list_for_each_entry_reverse(entity, &dev->entities, list) { 1759 if (entity->type != UVC_VC_PROCESSING_UNIT && 1760 entity->type != UVC_VC_EXTENSION_UNIT) 1761 continue; 1762 1763 if (entity->num_pads != 2) 1764 continue; 1765 1766 if (uvc_scan_chain_entity(chain, entity) < 0) 1767 goto error; 1768 1769 prev->baSourceID[0] = entity->id; 1770 prev = entity; 1771 } 1772 1773 if (uvc_scan_chain_entity(chain, iterm) < 0) 1774 goto error; 1775 1776 prev->baSourceID[0] = iterm->id; 1777 1778 list_add_tail(&chain->list, &dev->chains); 1779 1780 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n", 1781 uvc_print_chain(chain)); 1782 1783 return 0; 1784 1785 error: 1786 kfree(chain); 1787 return -EINVAL; 1788 } 1789 1790 /* 1791 * Scan the device for video chains and register video devices. 1792 * 1793 * Chains are scanned starting at their output terminals and walked backwards. 1794 */ 1795 static int uvc_scan_device(struct uvc_device *dev) 1796 { 1797 struct uvc_video_chain *chain; 1798 struct uvc_entity *term; 1799 1800 list_for_each_entry(term, &dev->entities, list) { 1801 if (!UVC_ENTITY_IS_OTERM(term)) 1802 continue; 1803 1804 /* 1805 * If the terminal is already included in a chain, skip it. 1806 * This can happen for chains that have multiple output 1807 * terminals, where all output terminals beside the first one 1808 * will be inserted in the chain in forward scans. 1809 */ 1810 if (term->chain.next || term->chain.prev) 1811 continue; 1812 1813 chain = uvc_alloc_chain(dev); 1814 if (chain == NULL) 1815 return -ENOMEM; 1816 1817 term->flags |= UVC_ENTITY_FLAG_DEFAULT; 1818 1819 if (uvc_scan_chain(chain, term) < 0) { 1820 kfree(chain); 1821 continue; 1822 } 1823 1824 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n", 1825 uvc_print_chain(chain)); 1826 1827 list_add_tail(&chain->list, &dev->chains); 1828 } 1829 1830 if (list_empty(&dev->chains)) 1831 uvc_scan_fallback(dev); 1832 1833 if (list_empty(&dev->chains)) { 1834 dev_info(&dev->udev->dev, "No valid video chain found.\n"); 1835 return -1; 1836 } 1837 1838 /* Add GPIO entity to the first chain. */ 1839 if (dev->gpio_unit) { 1840 chain = list_first_entry(&dev->chains, 1841 struct uvc_video_chain, list); 1842 list_add_tail(&dev->gpio_unit->chain, &chain->entities); 1843 } 1844 1845 return 0; 1846 } 1847 1848 /* ------------------------------------------------------------------------ 1849 * Video device registration and unregistration 1850 */ 1851 1852 /* 1853 * Delete the UVC device. 1854 * 1855 * Called by the kernel when the last reference to the uvc_device structure 1856 * is released. 1857 * 1858 * As this function is called after or during disconnect(), all URBs have 1859 * already been cancelled by the USB core. There is no need to kill the 1860 * interrupt URB manually. 1861 */ 1862 static void uvc_delete(struct kref *kref) 1863 { 1864 struct uvc_device *dev = container_of(kref, struct uvc_device, ref); 1865 struct list_head *p, *n; 1866 1867 uvc_status_cleanup(dev); 1868 uvc_ctrl_cleanup_device(dev); 1869 1870 usb_put_intf(dev->intf); 1871 usb_put_dev(dev->udev); 1872 1873 #ifdef CONFIG_MEDIA_CONTROLLER 1874 media_device_cleanup(&dev->mdev); 1875 #endif 1876 1877 list_for_each_safe(p, n, &dev->chains) { 1878 struct uvc_video_chain *chain; 1879 1880 chain = list_entry(p, struct uvc_video_chain, list); 1881 kfree(chain); 1882 } 1883 1884 list_for_each_safe(p, n, &dev->entities) { 1885 struct uvc_entity *entity; 1886 1887 entity = list_entry(p, struct uvc_entity, list); 1888 #ifdef CONFIG_MEDIA_CONTROLLER 1889 uvc_mc_cleanup_entity(entity); 1890 #endif 1891 kfree(entity); 1892 } 1893 1894 list_for_each_safe(p, n, &dev->streams) { 1895 struct uvc_streaming *streaming; 1896 1897 streaming = list_entry(p, struct uvc_streaming, list); 1898 usb_driver_release_interface(&uvc_driver.driver, 1899 streaming->intf); 1900 uvc_stream_delete(streaming); 1901 } 1902 1903 kfree(dev); 1904 } 1905 1906 static void uvc_release(struct video_device *vdev) 1907 { 1908 struct uvc_streaming *stream = video_get_drvdata(vdev); 1909 struct uvc_device *dev = stream->dev; 1910 1911 kref_put(&dev->ref, uvc_delete); 1912 } 1913 1914 /* 1915 * Unregister the video devices. 1916 */ 1917 static void uvc_unregister_video(struct uvc_device *dev) 1918 { 1919 struct uvc_streaming *stream; 1920 1921 list_for_each_entry(stream, &dev->streams, list) { 1922 if (!video_is_registered(&stream->vdev)) 1923 continue; 1924 1925 video_unregister_device(&stream->vdev); 1926 video_unregister_device(&stream->meta.vdev); 1927 1928 uvc_debugfs_cleanup_stream(stream); 1929 } 1930 1931 uvc_status_unregister(dev); 1932 1933 if (dev->vdev.dev) 1934 v4l2_device_unregister(&dev->vdev); 1935 #ifdef CONFIG_MEDIA_CONTROLLER 1936 if (media_devnode_is_registered(dev->mdev.devnode)) 1937 media_device_unregister(&dev->mdev); 1938 #endif 1939 } 1940 1941 int uvc_register_video_device(struct uvc_device *dev, 1942 struct uvc_streaming *stream, 1943 struct video_device *vdev, 1944 struct uvc_video_queue *queue, 1945 enum v4l2_buf_type type, 1946 const struct v4l2_file_operations *fops, 1947 const struct v4l2_ioctl_ops *ioctl_ops) 1948 { 1949 int ret; 1950 1951 /* Initialize the video buffers queue. */ 1952 ret = uvc_queue_init(queue, type, !uvc_no_drop_param); 1953 if (ret) 1954 return ret; 1955 1956 /* Register the device with V4L. */ 1957 1958 /* 1959 * We already hold a reference to dev->udev. The video device will be 1960 * unregistered before the reference is released, so we don't need to 1961 * get another one. 1962 */ 1963 vdev->v4l2_dev = &dev->vdev; 1964 vdev->fops = fops; 1965 vdev->ioctl_ops = ioctl_ops; 1966 vdev->release = uvc_release; 1967 vdev->prio = &stream->chain->prio; 1968 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 1969 vdev->vfl_dir = VFL_DIR_TX; 1970 else 1971 vdev->vfl_dir = VFL_DIR_RX; 1972 1973 switch (type) { 1974 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1975 default: 1976 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 1977 break; 1978 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1979 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 1980 break; 1981 case V4L2_BUF_TYPE_META_CAPTURE: 1982 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; 1983 break; 1984 } 1985 1986 strscpy(vdev->name, dev->name, sizeof(vdev->name)); 1987 1988 /* 1989 * Set the driver data before calling video_register_device, otherwise 1990 * the file open() handler might race us. 1991 */ 1992 video_set_drvdata(vdev, stream); 1993 1994 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); 1995 if (ret < 0) { 1996 dev_err(&stream->intf->dev, 1997 "Failed to register %s device (%d).\n", 1998 v4l2_type_names[type], ret); 1999 return ret; 2000 } 2001 2002 kref_get(&dev->ref); 2003 return 0; 2004 } 2005 2006 static int uvc_register_video(struct uvc_device *dev, 2007 struct uvc_streaming *stream) 2008 { 2009 int ret; 2010 2011 /* Initialize the streaming interface with default parameters. */ 2012 ret = uvc_video_init(stream); 2013 if (ret < 0) { 2014 dev_err(&stream->intf->dev, 2015 "Failed to initialize the device (%d).\n", ret); 2016 return ret; 2017 } 2018 2019 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 2020 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE 2021 | V4L2_CAP_META_CAPTURE; 2022 else 2023 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; 2024 2025 uvc_debugfs_init_stream(stream); 2026 2027 /* Register the device with V4L. */ 2028 return uvc_register_video_device(dev, stream, &stream->vdev, 2029 &stream->queue, stream->type, 2030 &uvc_fops, &uvc_ioctl_ops); 2031 } 2032 2033 /* 2034 * Register all video devices in all chains. 2035 */ 2036 static int uvc_register_terms(struct uvc_device *dev, 2037 struct uvc_video_chain *chain) 2038 { 2039 struct uvc_streaming *stream; 2040 struct uvc_entity *term; 2041 int ret; 2042 2043 list_for_each_entry(term, &chain->entities, chain) { 2044 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 2045 continue; 2046 2047 stream = uvc_stream_by_id(dev, term->id); 2048 if (stream == NULL) { 2049 dev_info(&dev->udev->dev, 2050 "No streaming interface found for terminal %u.", 2051 term->id); 2052 continue; 2053 } 2054 2055 stream->chain = chain; 2056 ret = uvc_register_video(dev, stream); 2057 if (ret < 0) 2058 return ret; 2059 2060 /* 2061 * Register a metadata node, but ignore a possible failure, 2062 * complete registration of video nodes anyway. 2063 */ 2064 uvc_meta_register(stream); 2065 2066 term->vdev = &stream->vdev; 2067 } 2068 2069 return 0; 2070 } 2071 2072 static int uvc_register_chains(struct uvc_device *dev) 2073 { 2074 struct uvc_video_chain *chain; 2075 int ret; 2076 2077 list_for_each_entry(chain, &dev->chains, list) { 2078 ret = uvc_register_terms(dev, chain); 2079 if (ret < 0) 2080 return ret; 2081 2082 #ifdef CONFIG_MEDIA_CONTROLLER 2083 ret = uvc_mc_register_entities(chain); 2084 if (ret < 0) 2085 dev_info(&dev->udev->dev, 2086 "Failed to register entities (%d).\n", ret); 2087 #endif 2088 } 2089 2090 return 0; 2091 } 2092 2093 /* ------------------------------------------------------------------------ 2094 * USB probe, disconnect, suspend and resume 2095 */ 2096 2097 static const struct uvc_device_info uvc_quirk_none = { 0 }; 2098 2099 static int uvc_probe(struct usb_interface *intf, 2100 const struct usb_device_id *id) 2101 { 2102 struct usb_device *udev = interface_to_usbdev(intf); 2103 struct uvc_device *dev; 2104 const struct uvc_device_info *info = 2105 (const struct uvc_device_info *)id->driver_info; 2106 int function; 2107 int ret; 2108 2109 /* Allocate memory for the device and initialize it. */ 2110 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2111 if (dev == NULL) 2112 return -ENOMEM; 2113 2114 INIT_LIST_HEAD(&dev->entities); 2115 INIT_LIST_HEAD(&dev->chains); 2116 INIT_LIST_HEAD(&dev->streams); 2117 kref_init(&dev->ref); 2118 atomic_set(&dev->nmappings, 0); 2119 mutex_init(&dev->lock); 2120 2121 dev->udev = usb_get_dev(udev); 2122 dev->intf = usb_get_intf(intf); 2123 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 2124 dev->info = info ? info : &uvc_quirk_none; 2125 dev->quirks = uvc_quirks_param == -1 2126 ? dev->info->quirks : uvc_quirks_param; 2127 2128 if (id->idVendor && id->idProduct) 2129 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n", 2130 udev->devpath, id->idVendor, id->idProduct); 2131 else 2132 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n", 2133 udev->devpath); 2134 2135 if (udev->product != NULL) 2136 strscpy(dev->name, udev->product, sizeof(dev->name)); 2137 else 2138 snprintf(dev->name, sizeof(dev->name), 2139 "UVC Camera (%04x:%04x)", 2140 le16_to_cpu(udev->descriptor.idVendor), 2141 le16_to_cpu(udev->descriptor.idProduct)); 2142 2143 /* 2144 * Add iFunction or iInterface to names when available as additional 2145 * distinguishers between interfaces. iFunction is prioritized over 2146 * iInterface which matches Windows behavior at the point of writing. 2147 */ 2148 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0) 2149 function = intf->intf_assoc->iFunction; 2150 else 2151 function = intf->cur_altsetting->desc.iInterface; 2152 if (function != 0) { 2153 size_t len; 2154 2155 strlcat(dev->name, ": ", sizeof(dev->name)); 2156 len = strlen(dev->name); 2157 usb_string(udev, function, dev->name + len, 2158 sizeof(dev->name) - len); 2159 } 2160 2161 /* Initialize the media device. */ 2162 #ifdef CONFIG_MEDIA_CONTROLLER 2163 dev->mdev.dev = &intf->dev; 2164 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); 2165 if (udev->serial) 2166 strscpy(dev->mdev.serial, udev->serial, 2167 sizeof(dev->mdev.serial)); 2168 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info)); 2169 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 2170 media_device_init(&dev->mdev); 2171 2172 dev->vdev.mdev = &dev->mdev; 2173 #endif 2174 2175 /* Parse the Video Class control descriptor. */ 2176 if (uvc_parse_control(dev) < 0) { 2177 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n"); 2178 goto error; 2179 } 2180 2181 /* Parse the associated GPIOs. */ 2182 if (uvc_gpio_parse(dev) < 0) { 2183 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n"); 2184 goto error; 2185 } 2186 2187 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", 2188 dev->uvc_version >> 8, dev->uvc_version & 0xff, 2189 udev->product ? udev->product : "<unnamed>", 2190 le16_to_cpu(udev->descriptor.idVendor), 2191 le16_to_cpu(udev->descriptor.idProduct)); 2192 2193 if (dev->quirks != dev->info->quirks) { 2194 dev_info(&dev->udev->dev, 2195 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n", 2196 dev->quirks); 2197 dev_info(&dev->udev->dev, 2198 "Please report required quirks to the linux-media mailing list.\n"); 2199 } 2200 2201 if (dev->info->uvc_version) { 2202 dev->uvc_version = dev->info->uvc_version; 2203 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n", 2204 dev->uvc_version >> 8, dev->uvc_version & 0xff); 2205 } 2206 2207 /* Register the V4L2 device. */ 2208 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) 2209 goto error; 2210 2211 /* Scan the device for video chains. */ 2212 if (uvc_scan_device(dev) < 0) 2213 goto error; 2214 2215 /* Initialize controls. */ 2216 if (uvc_ctrl_init_device(dev) < 0) 2217 goto error; 2218 2219 /* Register video device nodes. */ 2220 if (uvc_register_chains(dev) < 0) 2221 goto error; 2222 2223 #ifdef CONFIG_MEDIA_CONTROLLER 2224 /* Register the media device node */ 2225 if (media_device_register(&dev->mdev) < 0) 2226 goto error; 2227 #endif 2228 /* Save our data pointer in the interface data. */ 2229 usb_set_intfdata(intf, dev); 2230 2231 /* Initialize the interrupt URB. */ 2232 ret = uvc_status_init(dev); 2233 if (ret < 0) { 2234 dev_info(&dev->udev->dev, 2235 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n", 2236 ret); 2237 } 2238 2239 ret = uvc_gpio_init_irq(dev); 2240 if (ret < 0) { 2241 dev_err(&dev->udev->dev, 2242 "Unable to request privacy GPIO IRQ (%d)\n", ret); 2243 goto error; 2244 } 2245 2246 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME) 2247 udev->quirks &= ~USB_QUIRK_RESET_RESUME; 2248 2249 if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND)) 2250 usb_enable_autosuspend(udev); 2251 2252 uvc_dbg(dev, PROBE, "UVC device initialized\n"); 2253 2254 return 0; 2255 2256 error: 2257 uvc_unregister_video(dev); 2258 kref_put(&dev->ref, uvc_delete); 2259 return -ENODEV; 2260 } 2261 2262 static void uvc_disconnect(struct usb_interface *intf) 2263 { 2264 struct uvc_device *dev = usb_get_intfdata(intf); 2265 2266 /* 2267 * Set the USB interface data to NULL. This can be done outside the 2268 * lock, as there's no other reader. 2269 */ 2270 usb_set_intfdata(intf, NULL); 2271 2272 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2273 UVC_SC_VIDEOSTREAMING) 2274 return; 2275 2276 uvc_unregister_video(dev); 2277 kref_put(&dev->ref, uvc_delete); 2278 } 2279 2280 static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 2281 { 2282 struct uvc_device *dev = usb_get_intfdata(intf); 2283 struct uvc_streaming *stream; 2284 2285 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n", 2286 intf->cur_altsetting->desc.bInterfaceNumber); 2287 2288 /* Controls are cached on the fly so they don't need to be saved. */ 2289 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2290 UVC_SC_VIDEOCONTROL) { 2291 mutex_lock(&dev->lock); 2292 if (dev->users) 2293 uvc_status_stop(dev); 2294 mutex_unlock(&dev->lock); 2295 return 0; 2296 } 2297 2298 list_for_each_entry(stream, &dev->streams, list) { 2299 if (stream->intf == intf) 2300 return uvc_video_suspend(stream); 2301 } 2302 2303 uvc_dbg(dev, SUSPEND, 2304 "Suspend: video streaming USB interface mismatch\n"); 2305 return -EINVAL; 2306 } 2307 2308 static int __uvc_resume(struct usb_interface *intf, int reset) 2309 { 2310 struct uvc_device *dev = usb_get_intfdata(intf); 2311 struct uvc_streaming *stream; 2312 int ret = 0; 2313 2314 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n", 2315 intf->cur_altsetting->desc.bInterfaceNumber); 2316 2317 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2318 UVC_SC_VIDEOCONTROL) { 2319 if (reset) { 2320 ret = uvc_ctrl_restore_values(dev); 2321 if (ret < 0) 2322 return ret; 2323 } 2324 2325 mutex_lock(&dev->lock); 2326 if (dev->users) 2327 ret = uvc_status_start(dev, GFP_NOIO); 2328 mutex_unlock(&dev->lock); 2329 2330 return ret; 2331 } 2332 2333 list_for_each_entry(stream, &dev->streams, list) { 2334 if (stream->intf == intf) { 2335 ret = uvc_video_resume(stream, reset); 2336 if (ret < 0) 2337 uvc_queue_streamoff(&stream->queue, 2338 stream->queue.queue.type); 2339 return ret; 2340 } 2341 } 2342 2343 uvc_dbg(dev, SUSPEND, 2344 "Resume: video streaming USB interface mismatch\n"); 2345 return -EINVAL; 2346 } 2347 2348 static int uvc_resume(struct usb_interface *intf) 2349 { 2350 return __uvc_resume(intf, 0); 2351 } 2352 2353 static int uvc_reset_resume(struct usb_interface *intf) 2354 { 2355 return __uvc_resume(intf, 1); 2356 } 2357 2358 /* ------------------------------------------------------------------------ 2359 * Module parameters 2360 */ 2361 2362 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) 2363 { 2364 if (uvc_clock_param == CLOCK_MONOTONIC) 2365 return sprintf(buffer, "CLOCK_MONOTONIC"); 2366 else 2367 return sprintf(buffer, "CLOCK_REALTIME"); 2368 } 2369 2370 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) 2371 { 2372 if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 2373 val += strlen("clock_"); 2374 2375 if (strcasecmp(val, "monotonic") == 0) 2376 uvc_clock_param = CLOCK_MONOTONIC; 2377 else if (strcasecmp(val, "realtime") == 0) 2378 uvc_clock_param = CLOCK_REALTIME; 2379 else 2380 return -EINVAL; 2381 2382 return 0; 2383 } 2384 2385 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 2386 &uvc_clock_param, 0644); 2387 MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 2388 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644); 2389 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); 2390 module_param_named(nodrop, uvc_no_drop_param, uint, 0644); 2391 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 2392 module_param_named(quirks, uvc_quirks_param, uint, 0644); 2393 MODULE_PARM_DESC(quirks, "Forced device quirks"); 2394 module_param_named(trace, uvc_dbg_param, uint, 0644); 2395 MODULE_PARM_DESC(trace, "Trace level bitmask"); 2396 module_param_named(timeout, uvc_timeout_param, uint, 0644); 2397 MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 2398 2399 /* ------------------------------------------------------------------------ 2400 * Driver initialization and cleanup 2401 */ 2402 2403 static const struct uvc_device_info uvc_quirk_probe_minmax = { 2404 .quirks = UVC_QUIRK_PROBE_MINMAX, 2405 }; 2406 2407 static const struct uvc_device_info uvc_quirk_fix_bandwidth = { 2408 .quirks = UVC_QUIRK_FIX_BANDWIDTH, 2409 }; 2410 2411 static const struct uvc_device_info uvc_quirk_probe_def = { 2412 .quirks = UVC_QUIRK_PROBE_DEF, 2413 }; 2414 2415 static const struct uvc_device_info uvc_quirk_stream_no_fid = { 2416 .quirks = UVC_QUIRK_STREAM_NO_FID, 2417 }; 2418 2419 static const struct uvc_device_info uvc_quirk_force_y8 = { 2420 .quirks = UVC_QUIRK_FORCE_Y8, 2421 }; 2422 2423 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q} 2424 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \ 2425 {.meta_format = m} 2426 2427 /* 2428 * The Logitech cameras listed below have their interface class set to 2429 * VENDOR_SPEC because they don't announce themselves as UVC devices, even 2430 * though they are compliant. 2431 */ 2432 static const struct usb_device_id uvc_ids[] = { 2433 /* Quanta ACER HD User Facing */ 2434 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2435 | USB_DEVICE_ID_MATCH_INT_INFO, 2436 .idVendor = 0x0408, 2437 .idProduct = 0x4035, 2438 .bInterfaceClass = USB_CLASS_VIDEO, 2439 .bInterfaceSubClass = 1, 2440 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2441 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2442 .uvc_version = 0x010a, 2443 } }, 2444 /* LogiLink Wireless Webcam */ 2445 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2446 | USB_DEVICE_ID_MATCH_INT_INFO, 2447 .idVendor = 0x0416, 2448 .idProduct = 0xa91a, 2449 .bInterfaceClass = USB_CLASS_VIDEO, 2450 .bInterfaceSubClass = 1, 2451 .bInterfaceProtocol = 0, 2452 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2453 /* Genius eFace 2025 */ 2454 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2455 | USB_DEVICE_ID_MATCH_INT_INFO, 2456 .idVendor = 0x0458, 2457 .idProduct = 0x706e, 2458 .bInterfaceClass = USB_CLASS_VIDEO, 2459 .bInterfaceSubClass = 1, 2460 .bInterfaceProtocol = 0, 2461 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2462 /* Microsoft Lifecam NX-6000 */ 2463 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2464 | USB_DEVICE_ID_MATCH_INT_INFO, 2465 .idVendor = 0x045e, 2466 .idProduct = 0x00f8, 2467 .bInterfaceClass = USB_CLASS_VIDEO, 2468 .bInterfaceSubClass = 1, 2469 .bInterfaceProtocol = 0, 2470 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2471 /* Microsoft Lifecam NX-3000 */ 2472 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2473 | USB_DEVICE_ID_MATCH_INT_INFO, 2474 .idVendor = 0x045e, 2475 .idProduct = 0x0721, 2476 .bInterfaceClass = USB_CLASS_VIDEO, 2477 .bInterfaceSubClass = 1, 2478 .bInterfaceProtocol = 0, 2479 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2480 /* Microsoft Lifecam VX-7000 */ 2481 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2482 | USB_DEVICE_ID_MATCH_INT_INFO, 2483 .idVendor = 0x045e, 2484 .idProduct = 0x0723, 2485 .bInterfaceClass = USB_CLASS_VIDEO, 2486 .bInterfaceSubClass = 1, 2487 .bInterfaceProtocol = 0, 2488 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2489 /* Logitech, Webcam C910 */ 2490 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2491 | USB_DEVICE_ID_MATCH_INT_INFO, 2492 .idVendor = 0x046d, 2493 .idProduct = 0x0821, 2494 .bInterfaceClass = USB_CLASS_VIDEO, 2495 .bInterfaceSubClass = 1, 2496 .bInterfaceProtocol = 0, 2497 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2498 /* Logitech, Webcam B910 */ 2499 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2500 | USB_DEVICE_ID_MATCH_INT_INFO, 2501 .idVendor = 0x046d, 2502 .idProduct = 0x0823, 2503 .bInterfaceClass = USB_CLASS_VIDEO, 2504 .bInterfaceSubClass = 1, 2505 .bInterfaceProtocol = 0, 2506 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2507 /* Logitech Quickcam Fusion */ 2508 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2509 | USB_DEVICE_ID_MATCH_INT_INFO, 2510 .idVendor = 0x046d, 2511 .idProduct = 0x08c1, 2512 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2513 .bInterfaceSubClass = 1, 2514 .bInterfaceProtocol = 0 }, 2515 /* Logitech Quickcam Orbit MP */ 2516 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2517 | USB_DEVICE_ID_MATCH_INT_INFO, 2518 .idVendor = 0x046d, 2519 .idProduct = 0x08c2, 2520 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2521 .bInterfaceSubClass = 1, 2522 .bInterfaceProtocol = 0 }, 2523 /* Logitech Quickcam Pro for Notebook */ 2524 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2525 | USB_DEVICE_ID_MATCH_INT_INFO, 2526 .idVendor = 0x046d, 2527 .idProduct = 0x08c3, 2528 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2529 .bInterfaceSubClass = 1, 2530 .bInterfaceProtocol = 0 }, 2531 /* Logitech Quickcam Pro 5000 */ 2532 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2533 | USB_DEVICE_ID_MATCH_INT_INFO, 2534 .idVendor = 0x046d, 2535 .idProduct = 0x08c5, 2536 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2537 .bInterfaceSubClass = 1, 2538 .bInterfaceProtocol = 0 }, 2539 /* Logitech Quickcam OEM Dell Notebook */ 2540 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2541 | USB_DEVICE_ID_MATCH_INT_INFO, 2542 .idVendor = 0x046d, 2543 .idProduct = 0x08c6, 2544 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2545 .bInterfaceSubClass = 1, 2546 .bInterfaceProtocol = 0 }, 2547 /* Logitech Quickcam OEM Cisco VT Camera II */ 2548 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2549 | USB_DEVICE_ID_MATCH_INT_INFO, 2550 .idVendor = 0x046d, 2551 .idProduct = 0x08c7, 2552 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2553 .bInterfaceSubClass = 1, 2554 .bInterfaceProtocol = 0 }, 2555 /* Logitech HD Pro Webcam C920 */ 2556 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2557 | USB_DEVICE_ID_MATCH_INT_INFO, 2558 .idVendor = 0x046d, 2559 .idProduct = 0x082d, 2560 .bInterfaceClass = USB_CLASS_VIDEO, 2561 .bInterfaceSubClass = 1, 2562 .bInterfaceProtocol = 0, 2563 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT 2564 | UVC_QUIRK_INVALID_DEVICE_SOF) }, 2565 /* Logitech HD Pro Webcam C922 */ 2566 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2567 | USB_DEVICE_ID_MATCH_INT_INFO, 2568 .idVendor = 0x046d, 2569 .idProduct = 0x085c, 2570 .bInterfaceClass = USB_CLASS_VIDEO, 2571 .bInterfaceSubClass = 1, 2572 .bInterfaceProtocol = 0, 2573 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_INVALID_DEVICE_SOF) }, 2574 /* Logitech Rally Bar Huddle */ 2575 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2576 | USB_DEVICE_ID_MATCH_INT_INFO, 2577 .idVendor = 0x046d, 2578 .idProduct = 0x087c, 2579 .bInterfaceClass = USB_CLASS_VIDEO, 2580 .bInterfaceSubClass = 1, 2581 .bInterfaceProtocol = 0, 2582 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2583 /* Logitech Rally Bar */ 2584 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2585 | USB_DEVICE_ID_MATCH_INT_INFO, 2586 .idVendor = 0x046d, 2587 .idProduct = 0x089b, 2588 .bInterfaceClass = USB_CLASS_VIDEO, 2589 .bInterfaceSubClass = 1, 2590 .bInterfaceProtocol = 0, 2591 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2592 /* Logitech Rally Bar Mini */ 2593 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2594 | USB_DEVICE_ID_MATCH_INT_INFO, 2595 .idVendor = 0x046d, 2596 .idProduct = 0x08d3, 2597 .bInterfaceClass = USB_CLASS_VIDEO, 2598 .bInterfaceSubClass = 1, 2599 .bInterfaceProtocol = 0, 2600 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2601 /* Chicony CNF7129 (Asus EEE 100HE) */ 2602 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2603 | USB_DEVICE_ID_MATCH_INT_INFO, 2604 .idVendor = 0x04f2, 2605 .idProduct = 0xb071, 2606 .bInterfaceClass = USB_CLASS_VIDEO, 2607 .bInterfaceSubClass = 1, 2608 .bInterfaceProtocol = 0, 2609 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) }, 2610 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2611 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2612 | USB_DEVICE_ID_MATCH_INT_INFO, 2613 .idVendor = 0x058f, 2614 .idProduct = 0x3820, 2615 .bInterfaceClass = USB_CLASS_VIDEO, 2616 .bInterfaceSubClass = 1, 2617 .bInterfaceProtocol = 0, 2618 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2619 /* Dell XPS m1530 */ 2620 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2621 | USB_DEVICE_ID_MATCH_INT_INFO, 2622 .idVendor = 0x05a9, 2623 .idProduct = 0x2640, 2624 .bInterfaceClass = USB_CLASS_VIDEO, 2625 .bInterfaceSubClass = 1, 2626 .bInterfaceProtocol = 0, 2627 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2628 /* Dell SP2008WFP Monitor */ 2629 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2630 | USB_DEVICE_ID_MATCH_INT_INFO, 2631 .idVendor = 0x05a9, 2632 .idProduct = 0x2641, 2633 .bInterfaceClass = USB_CLASS_VIDEO, 2634 .bInterfaceSubClass = 1, 2635 .bInterfaceProtocol = 0, 2636 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2637 /* Dell Alienware X51 */ 2638 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2639 | USB_DEVICE_ID_MATCH_INT_INFO, 2640 .idVendor = 0x05a9, 2641 .idProduct = 0x2643, 2642 .bInterfaceClass = USB_CLASS_VIDEO, 2643 .bInterfaceSubClass = 1, 2644 .bInterfaceProtocol = 0, 2645 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2646 /* Dell Studio Hybrid 140g (OmniVision webcam) */ 2647 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2648 | USB_DEVICE_ID_MATCH_INT_INFO, 2649 .idVendor = 0x05a9, 2650 .idProduct = 0x264a, 2651 .bInterfaceClass = USB_CLASS_VIDEO, 2652 .bInterfaceSubClass = 1, 2653 .bInterfaceProtocol = 0, 2654 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2655 /* Dell XPS M1330 (OmniVision OV7670 webcam) */ 2656 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2657 | USB_DEVICE_ID_MATCH_INT_INFO, 2658 .idVendor = 0x05a9, 2659 .idProduct = 0x7670, 2660 .bInterfaceClass = USB_CLASS_VIDEO, 2661 .bInterfaceSubClass = 1, 2662 .bInterfaceProtocol = 0, 2663 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2664 /* Apple Built-In iSight */ 2665 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2666 | USB_DEVICE_ID_MATCH_INT_INFO, 2667 .idVendor = 0x05ac, 2668 .idProduct = 0x8501, 2669 .bInterfaceClass = USB_CLASS_VIDEO, 2670 .bInterfaceSubClass = 1, 2671 .bInterfaceProtocol = 0, 2672 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2673 | UVC_QUIRK_BUILTIN_ISIGHT) }, 2674 /* Apple FaceTime HD Camera (Built-In) */ 2675 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2676 | USB_DEVICE_ID_MATCH_INT_INFO, 2677 .idVendor = 0x05ac, 2678 .idProduct = 0x8514, 2679 .bInterfaceClass = USB_CLASS_VIDEO, 2680 .bInterfaceSubClass = 1, 2681 .bInterfaceProtocol = 0, 2682 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2683 /* Apple Built-In iSight via iBridge */ 2684 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2685 | USB_DEVICE_ID_MATCH_INT_INFO, 2686 .idVendor = 0x05ac, 2687 .idProduct = 0x8600, 2688 .bInterfaceClass = USB_CLASS_VIDEO, 2689 .bInterfaceSubClass = 1, 2690 .bInterfaceProtocol = 0, 2691 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2692 /* Foxlink ("HP Webcam" on HP Mini 5103) */ 2693 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2694 | USB_DEVICE_ID_MATCH_INT_INFO, 2695 .idVendor = 0x05c8, 2696 .idProduct = 0x0403, 2697 .bInterfaceClass = USB_CLASS_VIDEO, 2698 .bInterfaceSubClass = 1, 2699 .bInterfaceProtocol = 0, 2700 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2701 /* Genesys Logic USB 2.0 PC Camera */ 2702 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2703 | USB_DEVICE_ID_MATCH_INT_INFO, 2704 .idVendor = 0x05e3, 2705 .idProduct = 0x0505, 2706 .bInterfaceClass = USB_CLASS_VIDEO, 2707 .bInterfaceSubClass = 1, 2708 .bInterfaceProtocol = 0, 2709 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2710 /* Hercules Classic Silver */ 2711 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2712 | USB_DEVICE_ID_MATCH_INT_INFO, 2713 .idVendor = 0x06f8, 2714 .idProduct = 0x300c, 2715 .bInterfaceClass = USB_CLASS_VIDEO, 2716 .bInterfaceSubClass = 1, 2717 .bInterfaceProtocol = 0, 2718 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2719 /* ViMicro Vega */ 2720 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2721 | USB_DEVICE_ID_MATCH_INT_INFO, 2722 .idVendor = 0x0ac8, 2723 .idProduct = 0x332d, 2724 .bInterfaceClass = USB_CLASS_VIDEO, 2725 .bInterfaceSubClass = 1, 2726 .bInterfaceProtocol = 0, 2727 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2728 /* ViMicro - Minoru3D */ 2729 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2730 | USB_DEVICE_ID_MATCH_INT_INFO, 2731 .idVendor = 0x0ac8, 2732 .idProduct = 0x3410, 2733 .bInterfaceClass = USB_CLASS_VIDEO, 2734 .bInterfaceSubClass = 1, 2735 .bInterfaceProtocol = 0, 2736 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2737 /* ViMicro Venus - Minoru3D */ 2738 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2739 | USB_DEVICE_ID_MATCH_INT_INFO, 2740 .idVendor = 0x0ac8, 2741 .idProduct = 0x3420, 2742 .bInterfaceClass = USB_CLASS_VIDEO, 2743 .bInterfaceSubClass = 1, 2744 .bInterfaceProtocol = 0, 2745 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2746 /* Ophir Optronics - SPCAM 620U */ 2747 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2748 | USB_DEVICE_ID_MATCH_INT_INFO, 2749 .idVendor = 0x0bd3, 2750 .idProduct = 0x0555, 2751 .bInterfaceClass = USB_CLASS_VIDEO, 2752 .bInterfaceSubClass = 1, 2753 .bInterfaceProtocol = 0, 2754 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2755 /* MT6227 */ 2756 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2757 | USB_DEVICE_ID_MATCH_INT_INFO, 2758 .idVendor = 0x0e8d, 2759 .idProduct = 0x0004, 2760 .bInterfaceClass = USB_CLASS_VIDEO, 2761 .bInterfaceSubClass = 1, 2762 .bInterfaceProtocol = 0, 2763 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2764 | UVC_QUIRK_PROBE_DEF) }, 2765 /* IMC Networks (Medion Akoya) */ 2766 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2767 | USB_DEVICE_ID_MATCH_INT_INFO, 2768 .idVendor = 0x13d3, 2769 .idProduct = 0x5103, 2770 .bInterfaceClass = USB_CLASS_VIDEO, 2771 .bInterfaceSubClass = 1, 2772 .bInterfaceProtocol = 0, 2773 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2774 /* JMicron USB2.0 XGA WebCam */ 2775 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2776 | USB_DEVICE_ID_MATCH_INT_INFO, 2777 .idVendor = 0x152d, 2778 .idProduct = 0x0310, 2779 .bInterfaceClass = USB_CLASS_VIDEO, 2780 .bInterfaceSubClass = 1, 2781 .bInterfaceProtocol = 0, 2782 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2783 /* Syntek (HP Spartan) */ 2784 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2785 | USB_DEVICE_ID_MATCH_INT_INFO, 2786 .idVendor = 0x174f, 2787 .idProduct = 0x5212, 2788 .bInterfaceClass = USB_CLASS_VIDEO, 2789 .bInterfaceSubClass = 1, 2790 .bInterfaceProtocol = 0, 2791 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2792 /* Syntek (Samsung Q310) */ 2793 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2794 | USB_DEVICE_ID_MATCH_INT_INFO, 2795 .idVendor = 0x174f, 2796 .idProduct = 0x5931, 2797 .bInterfaceClass = USB_CLASS_VIDEO, 2798 .bInterfaceSubClass = 1, 2799 .bInterfaceProtocol = 0, 2800 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2801 /* Syntek (Packard Bell EasyNote MX52 */ 2802 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2803 | USB_DEVICE_ID_MATCH_INT_INFO, 2804 .idVendor = 0x174f, 2805 .idProduct = 0x8a12, 2806 .bInterfaceClass = USB_CLASS_VIDEO, 2807 .bInterfaceSubClass = 1, 2808 .bInterfaceProtocol = 0, 2809 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2810 /* Syntek (Asus F9SG) */ 2811 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2812 | USB_DEVICE_ID_MATCH_INT_INFO, 2813 .idVendor = 0x174f, 2814 .idProduct = 0x8a31, 2815 .bInterfaceClass = USB_CLASS_VIDEO, 2816 .bInterfaceSubClass = 1, 2817 .bInterfaceProtocol = 0, 2818 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2819 /* Syntek (Asus U3S) */ 2820 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2821 | USB_DEVICE_ID_MATCH_INT_INFO, 2822 .idVendor = 0x174f, 2823 .idProduct = 0x8a33, 2824 .bInterfaceClass = USB_CLASS_VIDEO, 2825 .bInterfaceSubClass = 1, 2826 .bInterfaceProtocol = 0, 2827 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2828 /* Syntek (JAOtech Smart Terminal) */ 2829 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2830 | USB_DEVICE_ID_MATCH_INT_INFO, 2831 .idVendor = 0x174f, 2832 .idProduct = 0x8a34, 2833 .bInterfaceClass = USB_CLASS_VIDEO, 2834 .bInterfaceSubClass = 1, 2835 .bInterfaceProtocol = 0, 2836 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2837 /* Miricle 307K */ 2838 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2839 | USB_DEVICE_ID_MATCH_INT_INFO, 2840 .idVendor = 0x17dc, 2841 .idProduct = 0x0202, 2842 .bInterfaceClass = USB_CLASS_VIDEO, 2843 .bInterfaceSubClass = 1, 2844 .bInterfaceProtocol = 0, 2845 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2846 /* Lenovo Thinkpad SL400/SL500 */ 2847 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2848 | USB_DEVICE_ID_MATCH_INT_INFO, 2849 .idVendor = 0x17ef, 2850 .idProduct = 0x480b, 2851 .bInterfaceClass = USB_CLASS_VIDEO, 2852 .bInterfaceSubClass = 1, 2853 .bInterfaceProtocol = 0, 2854 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2855 /* Aveo Technology USB 2.0 Camera */ 2856 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2857 | USB_DEVICE_ID_MATCH_INT_INFO, 2858 .idVendor = 0x1871, 2859 .idProduct = 0x0306, 2860 .bInterfaceClass = USB_CLASS_VIDEO, 2861 .bInterfaceSubClass = 1, 2862 .bInterfaceProtocol = 0, 2863 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2864 | UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2865 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ 2866 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2867 | USB_DEVICE_ID_MATCH_INT_INFO, 2868 .idVendor = 0x1871, 2869 .idProduct = 0x0516, 2870 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2871 .bInterfaceSubClass = 1, 2872 .bInterfaceProtocol = 0 }, 2873 /* Ecamm Pico iMage */ 2874 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2875 | USB_DEVICE_ID_MATCH_INT_INFO, 2876 .idVendor = 0x18cd, 2877 .idProduct = 0xcafe, 2878 .bInterfaceClass = USB_CLASS_VIDEO, 2879 .bInterfaceSubClass = 1, 2880 .bInterfaceProtocol = 0, 2881 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2882 /* Manta MM-353 Plako */ 2883 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2884 | USB_DEVICE_ID_MATCH_INT_INFO, 2885 .idVendor = 0x18ec, 2886 .idProduct = 0x3188, 2887 .bInterfaceClass = USB_CLASS_VIDEO, 2888 .bInterfaceSubClass = 1, 2889 .bInterfaceProtocol = 0, 2890 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2891 /* FSC WebCam V30S */ 2892 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2893 | USB_DEVICE_ID_MATCH_INT_INFO, 2894 .idVendor = 0x18ec, 2895 .idProduct = 0x3288, 2896 .bInterfaceClass = USB_CLASS_VIDEO, 2897 .bInterfaceSubClass = 1, 2898 .bInterfaceProtocol = 0, 2899 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2900 /* Arkmicro unbranded */ 2901 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2902 | USB_DEVICE_ID_MATCH_INT_INFO, 2903 .idVendor = 0x18ec, 2904 .idProduct = 0x3290, 2905 .bInterfaceClass = USB_CLASS_VIDEO, 2906 .bInterfaceSubClass = 1, 2907 .bInterfaceProtocol = 0, 2908 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2909 /* The Imaging Source USB CCD cameras */ 2910 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2911 | USB_DEVICE_ID_MATCH_INT_INFO, 2912 .idVendor = 0x199e, 2913 .idProduct = 0x8102, 2914 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2915 .bInterfaceSubClass = 1, 2916 .bInterfaceProtocol = 0 }, 2917 /* Bodelin ProScopeHR */ 2918 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2919 | USB_DEVICE_ID_MATCH_DEV_HI 2920 | USB_DEVICE_ID_MATCH_INT_INFO, 2921 .idVendor = 0x19ab, 2922 .idProduct = 0x1000, 2923 .bcdDevice_hi = 0x0126, 2924 .bInterfaceClass = USB_CLASS_VIDEO, 2925 .bInterfaceSubClass = 1, 2926 .bInterfaceProtocol = 0, 2927 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) }, 2928 /* MSI StarCam 370i */ 2929 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2930 | USB_DEVICE_ID_MATCH_INT_INFO, 2931 .idVendor = 0x1b3b, 2932 .idProduct = 0x2951, 2933 .bInterfaceClass = USB_CLASS_VIDEO, 2934 .bInterfaceSubClass = 1, 2935 .bInterfaceProtocol = 0, 2936 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2937 /* Generalplus Technology Inc. 808 Camera */ 2938 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2939 | USB_DEVICE_ID_MATCH_INT_INFO, 2940 .idVendor = 0x1b3f, 2941 .idProduct = 0x2002, 2942 .bInterfaceClass = USB_CLASS_VIDEO, 2943 .bInterfaceSubClass = 1, 2944 .bInterfaceProtocol = 0, 2945 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2946 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */ 2947 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2948 | USB_DEVICE_ID_MATCH_INT_INFO, 2949 .idVendor = 0x1bcf, 2950 .idProduct = 0x0b40, 2951 .bInterfaceClass = USB_CLASS_VIDEO, 2952 .bInterfaceSubClass = 1, 2953 .bInterfaceProtocol = 0, 2954 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2955 .uvc_version = 0x010a, 2956 } }, 2957 /* SiGma Micro USB Web Camera */ 2958 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2959 | USB_DEVICE_ID_MATCH_INT_INFO, 2960 .idVendor = 0x1c4f, 2961 .idProduct = 0x3000, 2962 .bInterfaceClass = USB_CLASS_VIDEO, 2963 .bInterfaceSubClass = 1, 2964 .bInterfaceProtocol = 0, 2965 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2966 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) }, 2967 /* Oculus VR Positional Tracker DK2 */ 2968 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2969 | USB_DEVICE_ID_MATCH_INT_INFO, 2970 .idVendor = 0x2833, 2971 .idProduct = 0x0201, 2972 .bInterfaceClass = USB_CLASS_VIDEO, 2973 .bInterfaceSubClass = 1, 2974 .bInterfaceProtocol = 0, 2975 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 2976 /* Oculus VR Rift Sensor */ 2977 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2978 | USB_DEVICE_ID_MATCH_INT_INFO, 2979 .idVendor = 0x2833, 2980 .idProduct = 0x0211, 2981 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2982 .bInterfaceSubClass = 1, 2983 .bInterfaceProtocol = 0, 2984 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 2985 /* GEO Semiconductor GC6500 */ 2986 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2987 | USB_DEVICE_ID_MATCH_INT_INFO, 2988 .idVendor = 0x29fe, 2989 .idProduct = 0x4d53, 2990 .bInterfaceClass = USB_CLASS_VIDEO, 2991 .bInterfaceSubClass = 1, 2992 .bInterfaceProtocol = 0, 2993 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) }, 2994 /* Insta360 Link */ 2995 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2996 | USB_DEVICE_ID_MATCH_INT_INFO, 2997 .idVendor = 0x2e1a, 2998 .idProduct = 0x4c01, 2999 .bInterfaceClass = USB_CLASS_VIDEO, 3000 .bInterfaceSubClass = 1, 3001 .bInterfaceProtocol = 0, 3002 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) }, 3003 /* Intel D410/ASR depth camera */ 3004 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3005 | USB_DEVICE_ID_MATCH_INT_INFO, 3006 .idVendor = 0x8086, 3007 .idProduct = 0x0ad2, 3008 .bInterfaceClass = USB_CLASS_VIDEO, 3009 .bInterfaceSubClass = 1, 3010 .bInterfaceProtocol = 0, 3011 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3012 /* Intel D415/ASRC depth camera */ 3013 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3014 | USB_DEVICE_ID_MATCH_INT_INFO, 3015 .idVendor = 0x8086, 3016 .idProduct = 0x0ad3, 3017 .bInterfaceClass = USB_CLASS_VIDEO, 3018 .bInterfaceSubClass = 1, 3019 .bInterfaceProtocol = 0, 3020 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3021 /* Intel D430/AWG depth camera */ 3022 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3023 | USB_DEVICE_ID_MATCH_INT_INFO, 3024 .idVendor = 0x8086, 3025 .idProduct = 0x0ad4, 3026 .bInterfaceClass = USB_CLASS_VIDEO, 3027 .bInterfaceSubClass = 1, 3028 .bInterfaceProtocol = 0, 3029 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3030 /* Intel RealSense D4M */ 3031 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3032 | USB_DEVICE_ID_MATCH_INT_INFO, 3033 .idVendor = 0x8086, 3034 .idProduct = 0x0b03, 3035 .bInterfaceClass = USB_CLASS_VIDEO, 3036 .bInterfaceSubClass = 1, 3037 .bInterfaceProtocol = 0, 3038 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3039 /* Intel D435/AWGC depth camera */ 3040 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3041 | USB_DEVICE_ID_MATCH_INT_INFO, 3042 .idVendor = 0x8086, 3043 .idProduct = 0x0b07, 3044 .bInterfaceClass = USB_CLASS_VIDEO, 3045 .bInterfaceSubClass = 1, 3046 .bInterfaceProtocol = 0, 3047 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3048 /* Intel D435i depth camera */ 3049 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3050 | USB_DEVICE_ID_MATCH_INT_INFO, 3051 .idVendor = 0x8086, 3052 .idProduct = 0x0b3a, 3053 .bInterfaceClass = USB_CLASS_VIDEO, 3054 .bInterfaceSubClass = 1, 3055 .bInterfaceProtocol = 0, 3056 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3057 /* Intel D405 Depth Camera */ 3058 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3059 | USB_DEVICE_ID_MATCH_INT_INFO, 3060 .idVendor = 0x8086, 3061 .idProduct = 0x0b5b, 3062 .bInterfaceClass = USB_CLASS_VIDEO, 3063 .bInterfaceSubClass = 1, 3064 .bInterfaceProtocol = 0, 3065 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3066 /* Intel D455 Depth Camera */ 3067 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3068 | USB_DEVICE_ID_MATCH_INT_INFO, 3069 .idVendor = 0x8086, 3070 .idProduct = 0x0b5c, 3071 .bInterfaceClass = USB_CLASS_VIDEO, 3072 .bInterfaceSubClass = 1, 3073 .bInterfaceProtocol = 0, 3074 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3075 /* Generic USB Video Class */ 3076 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, 3077 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, 3078 {} 3079 }; 3080 3081 MODULE_DEVICE_TABLE(usb, uvc_ids); 3082 3083 struct uvc_driver uvc_driver = { 3084 .driver = { 3085 .name = "uvcvideo", 3086 .probe = uvc_probe, 3087 .disconnect = uvc_disconnect, 3088 .suspend = uvc_suspend, 3089 .resume = uvc_resume, 3090 .reset_resume = uvc_reset_resume, 3091 .id_table = uvc_ids, 3092 .supports_autosuspend = 1, 3093 }, 3094 }; 3095 3096 static int __init uvc_init(void) 3097 { 3098 int ret; 3099 3100 uvc_debugfs_init(); 3101 3102 ret = usb_register(&uvc_driver.driver); 3103 if (ret < 0) { 3104 uvc_debugfs_cleanup(); 3105 return ret; 3106 } 3107 3108 return 0; 3109 } 3110 3111 static void __exit uvc_cleanup(void) 3112 { 3113 usb_deregister(&uvc_driver.driver); 3114 uvc_debugfs_cleanup(); 3115 } 3116 3117 module_init(uvc_init); 3118 module_exit(uvc_cleanup); 3119 3120 MODULE_AUTHOR(DRIVER_AUTHOR); 3121 MODULE_DESCRIPTION(DRIVER_DESC); 3122 MODULE_LICENSE("GPL"); 3123 MODULE_VERSION(DRIVER_VERSION); 3124 3125