1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * uvc_driver.c -- USB Video Class driver 4 * 5 * Copyright (C) 2005-2010 6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com) 7 */ 8 9 #include <linux/atomic.h> 10 #include <linux/bits.h> 11 #include <linux/gpio/consumer.h> 12 #include <linux/kernel.h> 13 #include <linux/list.h> 14 #include <linux/module.h> 15 #include <linux/slab.h> 16 #include <linux/usb.h> 17 #include <linux/usb/quirks.h> 18 #include <linux/usb/uvc.h> 19 #include <linux/videodev2.h> 20 #include <linux/vmalloc.h> 21 #include <linux/wait.h> 22 #include <linux/unaligned.h> 23 24 #include <media/v4l2-common.h> 25 #include <media/v4l2-ioctl.h> 26 27 #include "uvcvideo.h" 28 29 #define DRIVER_AUTHOR "Laurent Pinchart " \ 30 "<laurent.pinchart@ideasonboard.com>" 31 #define DRIVER_DESC "USB Video Class driver" 32 33 unsigned int uvc_clock_param = CLOCK_MONOTONIC; 34 unsigned int uvc_hw_timestamps_param; 35 unsigned int uvc_no_drop_param = 1; 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_frame(struct uvc_device *dev, 224 struct uvc_streaming *streaming, 225 struct uvc_format *format, struct uvc_frame *frame, 226 u32 **intervals, u8 ftype, int width_multiplier, 227 const unsigned char *buffer, int buflen) 228 { 229 struct usb_host_interface *alts = streaming->intf->cur_altsetting; 230 unsigned int maxIntervalIndex; 231 unsigned int interval; 232 unsigned int i, n; 233 234 if (ftype != UVC_VS_FRAME_FRAME_BASED) 235 n = buflen > 25 ? buffer[25] : 0; 236 else 237 n = buflen > 21 ? buffer[21] : 0; 238 239 n = n ? n : 3; 240 241 if (buflen < 26 + 4 * n) { 242 uvc_dbg(dev, DESCR, 243 "device %d videostreaming interface %d FRAME error\n", 244 dev->udev->devnum, alts->desc.bInterfaceNumber); 245 return -EINVAL; 246 } 247 248 frame->bFrameIndex = buffer[3]; 249 frame->bmCapabilities = buffer[4]; 250 frame->wWidth = get_unaligned_le16(&buffer[5]) * width_multiplier; 251 frame->wHeight = get_unaligned_le16(&buffer[7]); 252 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 253 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 254 if (ftype != UVC_VS_FRAME_FRAME_BASED) { 255 frame->dwMaxVideoFrameBufferSize = 256 get_unaligned_le32(&buffer[17]); 257 frame->dwDefaultFrameInterval = 258 get_unaligned_le32(&buffer[21]); 259 frame->bFrameIntervalType = buffer[25]; 260 } else { 261 frame->dwMaxVideoFrameBufferSize = 0; 262 frame->dwDefaultFrameInterval = 263 get_unaligned_le32(&buffer[17]); 264 frame->bFrameIntervalType = buffer[21]; 265 } 266 267 /* 268 * Copy the frame intervals. 269 * 270 * Some bogus devices report dwMinFrameInterval equal to 271 * dwMaxFrameInterval and have dwFrameIntervalStep set to zero. Setting 272 * all null intervals to 1 fixes the problem and some other divisions 273 * by zero that could happen. 274 */ 275 frame->dwFrameInterval = *intervals; 276 277 for (i = 0; i < n; ++i) { 278 interval = get_unaligned_le32(&buffer[26 + 4 * i]); 279 (*intervals)[i] = interval ? interval : 1; 280 } 281 282 /* 283 * Apply more fixes, quirks and workarounds to handle incorrect or 284 * broken descriptors. 285 */ 286 287 /* 288 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize completely. 289 * Observed behaviours range from setting the value to 1.1x the actual 290 * frame size to hardwiring the 16 low bits to 0. This results in a 291 * higher than necessary memory usage as well as a wrong image size 292 * information. For uncompressed formats this can be fixed by computing 293 * the value from the frame size. 294 */ 295 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 296 frame->dwMaxVideoFrameBufferSize = format->bpp * frame->wWidth 297 * frame->wHeight / 8; 298 299 /* 300 * Clamp the default frame interval to the boundaries. A zero 301 * bFrameIntervalType value indicates a continuous frame interval 302 * range, with dwFrameInterval[0] storing the minimum value and 303 * dwFrameInterval[1] storing the maximum value. 304 */ 305 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1; 306 frame->dwDefaultFrameInterval = 307 clamp(frame->dwDefaultFrameInterval, 308 frame->dwFrameInterval[0], 309 frame->dwFrameInterval[maxIntervalIndex]); 310 311 /* 312 * Some devices report frame intervals that are not functional. If the 313 * corresponding quirk is set, restrict operation to the first interval 314 * only. 315 */ 316 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { 317 frame->bFrameIntervalType = 1; 318 (*intervals)[0] = frame->dwDefaultFrameInterval; 319 } 320 321 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n", 322 frame->wWidth, frame->wHeight, 323 10000000 / frame->dwDefaultFrameInterval, 324 (100000000 / frame->dwDefaultFrameInterval) % 10); 325 326 *intervals += n; 327 328 return buffer[0]; 329 } 330 331 static int uvc_parse_format(struct uvc_device *dev, 332 struct uvc_streaming *streaming, struct uvc_format *format, 333 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer, 334 int buflen) 335 { 336 struct usb_host_interface *alts = streaming->intf->cur_altsetting; 337 const struct uvc_format_desc *fmtdesc; 338 struct uvc_frame *frame; 339 const unsigned char *start = buffer; 340 unsigned int width_multiplier = 1; 341 unsigned int i, n; 342 u8 ftype; 343 int ret; 344 345 format->type = buffer[2]; 346 format->index = buffer[3]; 347 format->frames = frames; 348 349 switch (buffer[2]) { 350 case UVC_VS_FORMAT_UNCOMPRESSED: 351 case UVC_VS_FORMAT_FRAME_BASED: 352 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 353 if (buflen < n) { 354 uvc_dbg(dev, DESCR, 355 "device %d videostreaming interface %d FORMAT error\n", 356 dev->udev->devnum, 357 alts->desc.bInterfaceNumber); 358 return -EINVAL; 359 } 360 361 /* Find the format descriptor from its GUID. */ 362 fmtdesc = uvc_format_by_guid(&buffer[5]); 363 364 if (!fmtdesc) { 365 /* 366 * Unknown video formats are not fatal errors, the 367 * caller will skip this descriptor. 368 */ 369 dev_info(&streaming->intf->dev, 370 "Unknown video format %pUl\n", &buffer[5]); 371 return 0; 372 } 373 374 format->fcc = fmtdesc->fcc; 375 format->bpp = buffer[21]; 376 377 /* 378 * Some devices report a format that doesn't match what they 379 * really send. 380 */ 381 if (dev->quirks & UVC_QUIRK_FORCE_Y8) { 382 if (format->fcc == V4L2_PIX_FMT_YUYV) { 383 format->fcc = V4L2_PIX_FMT_GREY; 384 format->bpp = 8; 385 width_multiplier = 2; 386 } 387 } 388 389 /* Some devices report bpp that doesn't match the format. */ 390 if (dev->quirks & UVC_QUIRK_FORCE_BPP) { 391 const struct v4l2_format_info *info = 392 v4l2_format_info(format->fcc); 393 394 if (info) { 395 unsigned int div = info->hdiv * info->vdiv; 396 397 n = info->bpp[0] * div; 398 for (i = 1; i < info->comp_planes; i++) 399 n += info->bpp[i]; 400 401 format->bpp = DIV_ROUND_UP(8 * n, div); 402 } 403 } 404 405 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 406 ftype = UVC_VS_FRAME_UNCOMPRESSED; 407 } else { 408 ftype = UVC_VS_FRAME_FRAME_BASED; 409 if (buffer[27]) 410 format->flags = UVC_FMT_FLAG_COMPRESSED; 411 } 412 break; 413 414 case UVC_VS_FORMAT_MJPEG: 415 if (buflen < 11) { 416 uvc_dbg(dev, DESCR, 417 "device %d videostreaming interface %d FORMAT error\n", 418 dev->udev->devnum, 419 alts->desc.bInterfaceNumber); 420 return -EINVAL; 421 } 422 423 format->fcc = V4L2_PIX_FMT_MJPEG; 424 format->flags = UVC_FMT_FLAG_COMPRESSED; 425 format->bpp = 0; 426 ftype = UVC_VS_FRAME_MJPEG; 427 break; 428 429 case UVC_VS_FORMAT_DV: 430 if (buflen < 9) { 431 uvc_dbg(dev, DESCR, 432 "device %d videostreaming interface %d FORMAT error\n", 433 dev->udev->devnum, 434 alts->desc.bInterfaceNumber); 435 return -EINVAL; 436 } 437 438 if ((buffer[8] & 0x7f) > 2) { 439 uvc_dbg(dev, DESCR, 440 "device %d videostreaming interface %d: unknown DV format %u\n", 441 dev->udev->devnum, 442 alts->desc.bInterfaceNumber, buffer[8]); 443 return -EINVAL; 444 } 445 446 format->fcc = V4L2_PIX_FMT_DV; 447 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 448 format->bpp = 0; 449 ftype = 0; 450 451 /* Create a dummy frame descriptor. */ 452 frame = &frames[0]; 453 memset(frame, 0, sizeof(*frame)); 454 frame->bFrameIntervalType = 1; 455 frame->dwDefaultFrameInterval = 1; 456 frame->dwFrameInterval = *intervals; 457 *(*intervals)++ = 1; 458 format->nframes = 1; 459 break; 460 461 case UVC_VS_FORMAT_MPEG2TS: 462 case UVC_VS_FORMAT_STREAM_BASED: 463 /* Not supported yet. */ 464 default: 465 uvc_dbg(dev, DESCR, 466 "device %d videostreaming interface %d unsupported format %u\n", 467 dev->udev->devnum, alts->desc.bInterfaceNumber, 468 buffer[2]); 469 return -EINVAL; 470 } 471 472 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc); 473 474 buflen -= buffer[0]; 475 buffer += buffer[0]; 476 477 /* 478 * Parse the frame descriptors. Only uncompressed, MJPEG and frame 479 * based formats have frame descriptors. 480 */ 481 if (ftype) { 482 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 483 buffer[2] == ftype) { 484 frame = &frames[format->nframes]; 485 ret = uvc_parse_frame(dev, streaming, format, frame, 486 intervals, ftype, width_multiplier, 487 buffer, buflen); 488 if (ret < 0) 489 return ret; 490 format->nframes++; 491 buflen -= ret; 492 buffer += ret; 493 } 494 } 495 496 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 497 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 498 buflen -= buffer[0]; 499 buffer += buffer[0]; 500 } 501 502 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 503 buffer[2] == UVC_VS_COLORFORMAT) { 504 if (buflen < 6) { 505 uvc_dbg(dev, DESCR, 506 "device %d videostreaming interface %d COLORFORMAT error\n", 507 dev->udev->devnum, 508 alts->desc.bInterfaceNumber); 509 return -EINVAL; 510 } 511 512 format->colorspace = uvc_colorspace(buffer[3]); 513 format->xfer_func = uvc_xfer_func(buffer[4]); 514 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]); 515 516 buflen -= buffer[0]; 517 buffer += buffer[0]; 518 } else { 519 format->colorspace = V4L2_COLORSPACE_SRGB; 520 } 521 522 return buffer - start; 523 } 524 525 static int uvc_parse_streaming(struct uvc_device *dev, 526 struct usb_interface *intf) 527 { 528 struct uvc_streaming *streaming = NULL; 529 struct uvc_format *format; 530 struct uvc_frame *frame; 531 struct usb_host_interface *alts = &intf->altsetting[0]; 532 const unsigned char *_buffer, *buffer = alts->extra; 533 int _buflen, buflen = alts->extralen; 534 unsigned int nformats = 0, nframes = 0, nintervals = 0; 535 unsigned int size, i, n, p; 536 u32 *interval; 537 u16 psize; 538 int ret = -EINVAL; 539 540 if (intf->cur_altsetting->desc.bInterfaceSubClass 541 != UVC_SC_VIDEOSTREAMING) { 542 uvc_dbg(dev, DESCR, 543 "device %d interface %d isn't a video streaming interface\n", 544 dev->udev->devnum, 545 intf->altsetting[0].desc.bInterfaceNumber); 546 return -EINVAL; 547 } 548 549 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 550 uvc_dbg(dev, DESCR, 551 "device %d interface %d is already claimed\n", 552 dev->udev->devnum, 553 intf->altsetting[0].desc.bInterfaceNumber); 554 return -EINVAL; 555 } 556 557 streaming = uvc_stream_new(dev, intf); 558 if (streaming == NULL) { 559 usb_driver_release_interface(&uvc_driver.driver, intf); 560 return -ENOMEM; 561 } 562 563 /* 564 * The Pico iMage webcam has its class-specific interface descriptors 565 * after the endpoint descriptors. 566 */ 567 if (buflen == 0) { 568 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 569 struct usb_host_endpoint *ep = &alts->endpoint[i]; 570 571 if (ep->extralen == 0) 572 continue; 573 574 if (ep->extralen > 2 && 575 ep->extra[1] == USB_DT_CS_INTERFACE) { 576 uvc_dbg(dev, DESCR, 577 "trying extra data from endpoint %u\n", 578 i); 579 buffer = alts->endpoint[i].extra; 580 buflen = alts->endpoint[i].extralen; 581 break; 582 } 583 } 584 } 585 586 /* Skip the standard interface descriptors. */ 587 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 588 buflen -= buffer[0]; 589 buffer += buffer[0]; 590 } 591 592 if (buflen <= 2) { 593 uvc_dbg(dev, DESCR, 594 "no class-specific streaming interface descriptors found\n"); 595 goto error; 596 } 597 598 /* Parse the header descriptor. */ 599 switch (buffer[2]) { 600 case UVC_VS_OUTPUT_HEADER: 601 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 602 size = 9; 603 break; 604 605 case UVC_VS_INPUT_HEADER: 606 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 607 size = 13; 608 break; 609 610 default: 611 uvc_dbg(dev, DESCR, 612 "device %d videostreaming interface %d HEADER descriptor not found\n", 613 dev->udev->devnum, alts->desc.bInterfaceNumber); 614 goto error; 615 } 616 617 p = buflen >= 4 ? buffer[3] : 0; 618 n = buflen >= size ? buffer[size-1] : 0; 619 620 if (buflen < size + p*n) { 621 uvc_dbg(dev, DESCR, 622 "device %d videostreaming interface %d HEADER descriptor is invalid\n", 623 dev->udev->devnum, alts->desc.bInterfaceNumber); 624 goto error; 625 } 626 627 streaming->header.bNumFormats = p; 628 streaming->header.bEndpointAddress = buffer[6]; 629 if (buffer[2] == UVC_VS_INPUT_HEADER) { 630 streaming->header.bmInfo = buffer[7]; 631 streaming->header.bTerminalLink = buffer[8]; 632 streaming->header.bStillCaptureMethod = buffer[9]; 633 streaming->header.bTriggerSupport = buffer[10]; 634 streaming->header.bTriggerUsage = buffer[11]; 635 } else { 636 streaming->header.bTerminalLink = buffer[7]; 637 } 638 streaming->header.bControlSize = n; 639 640 streaming->header.bmaControls = kmemdup(&buffer[size], p * n, 641 GFP_KERNEL); 642 if (streaming->header.bmaControls == NULL) { 643 ret = -ENOMEM; 644 goto error; 645 } 646 647 buflen -= buffer[0]; 648 buffer += buffer[0]; 649 650 _buffer = buffer; 651 _buflen = buflen; 652 653 /* Count the format and frame descriptors. */ 654 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 655 switch (_buffer[2]) { 656 case UVC_VS_FORMAT_UNCOMPRESSED: 657 case UVC_VS_FORMAT_MJPEG: 658 case UVC_VS_FORMAT_FRAME_BASED: 659 nformats++; 660 break; 661 662 case UVC_VS_FORMAT_DV: 663 /* 664 * DV format has no frame descriptor. We will create a 665 * dummy frame descriptor with a dummy frame interval. 666 */ 667 nformats++; 668 nframes++; 669 nintervals++; 670 break; 671 672 case UVC_VS_FORMAT_MPEG2TS: 673 case UVC_VS_FORMAT_STREAM_BASED: 674 uvc_dbg(dev, DESCR, 675 "device %d videostreaming interface %d FORMAT %u is not supported\n", 676 dev->udev->devnum, 677 alts->desc.bInterfaceNumber, _buffer[2]); 678 break; 679 680 case UVC_VS_FRAME_UNCOMPRESSED: 681 case UVC_VS_FRAME_MJPEG: 682 nframes++; 683 if (_buflen > 25) 684 nintervals += _buffer[25] ? _buffer[25] : 3; 685 break; 686 687 case UVC_VS_FRAME_FRAME_BASED: 688 nframes++; 689 if (_buflen > 21) 690 nintervals += _buffer[21] ? _buffer[21] : 3; 691 break; 692 } 693 694 _buflen -= _buffer[0]; 695 _buffer += _buffer[0]; 696 } 697 698 if (nformats == 0) { 699 uvc_dbg(dev, DESCR, 700 "device %d videostreaming interface %d has no supported formats defined\n", 701 dev->udev->devnum, alts->desc.bInterfaceNumber); 702 goto error; 703 } 704 705 /* 706 * Allocate memory for the formats, the frames and the intervals, 707 * plus any required padding to guarantee that everything has the 708 * correct alignment. 709 */ 710 size = nformats * sizeof(*format); 711 size = ALIGN(size, __alignof__(*frame)) + nframes * sizeof(*frame); 712 size = ALIGN(size, __alignof__(*interval)) 713 + nintervals * sizeof(*interval); 714 715 format = kzalloc(size, GFP_KERNEL); 716 if (!format) { 717 ret = -ENOMEM; 718 goto error; 719 } 720 721 frame = (void *)format + nformats * sizeof(*format); 722 frame = PTR_ALIGN(frame, __alignof__(*frame)); 723 interval = (void *)frame + nframes * sizeof(*frame); 724 interval = PTR_ALIGN(interval, __alignof__(*interval)); 725 726 streaming->formats = format; 727 streaming->nformats = 0; 728 729 /* Parse the format descriptors. */ 730 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 731 switch (buffer[2]) { 732 case UVC_VS_FORMAT_UNCOMPRESSED: 733 case UVC_VS_FORMAT_MJPEG: 734 case UVC_VS_FORMAT_DV: 735 case UVC_VS_FORMAT_FRAME_BASED: 736 ret = uvc_parse_format(dev, streaming, format, frame, 737 &interval, buffer, buflen); 738 if (ret < 0) 739 goto error; 740 if (!ret) 741 break; 742 743 streaming->nformats++; 744 frame += format->nframes; 745 format++; 746 747 buflen -= ret; 748 buffer += ret; 749 continue; 750 751 default: 752 break; 753 } 754 755 buflen -= buffer[0]; 756 buffer += buffer[0]; 757 } 758 759 if (buflen) 760 uvc_dbg(dev, DESCR, 761 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n", 762 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 763 764 /* Parse the alternate settings to find the maximum bandwidth. */ 765 for (i = 0; i < intf->num_altsetting; ++i) { 766 struct usb_host_endpoint *ep; 767 768 alts = &intf->altsetting[i]; 769 ep = uvc_find_endpoint(alts, 770 streaming->header.bEndpointAddress); 771 if (ep == NULL) 772 continue; 773 psize = uvc_endpoint_max_bpi(dev->udev, ep); 774 if (psize > streaming->maxpsize) 775 streaming->maxpsize = psize; 776 } 777 778 list_add_tail(&streaming->list, &dev->streams); 779 return 0; 780 781 error: 782 usb_driver_release_interface(&uvc_driver.driver, intf); 783 uvc_stream_delete(streaming); 784 return ret; 785 } 786 787 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA; 788 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER; 789 static const u8 uvc_media_transport_input_guid[16] = 790 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT; 791 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING; 792 793 static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type, 794 u16 id, unsigned int num_pads, 795 unsigned int extra_size) 796 { 797 struct uvc_entity *entity; 798 unsigned int num_inputs; 799 unsigned int size; 800 unsigned int i; 801 802 /* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */ 803 if (id == 0) { 804 dev_err(&dev->udev->dev, "Found Unit with invalid ID 0.\n"); 805 return ERR_PTR(-EINVAL); 806 } 807 808 /* Per UVC 1.1+ spec 3.7.2, the ID is unique. */ 809 if (uvc_entity_by_id(dev, id)) { 810 dev_err(&dev->udev->dev, "Found multiple Units with ID %u\n", id); 811 return ERR_PTR(-EINVAL); 812 } 813 814 extra_size = roundup(extra_size, sizeof(*entity->pads)); 815 if (num_pads) 816 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1; 817 else 818 num_inputs = 0; 819 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads 820 + num_inputs; 821 entity = kzalloc(size, GFP_KERNEL); 822 if (entity == NULL) 823 return ERR_PTR(-ENOMEM); 824 825 entity->id = id; 826 entity->type = type; 827 828 /* 829 * Set the GUID for standard entity types. For extension units, the GUID 830 * is initialized by the caller. 831 */ 832 switch (type) { 833 case UVC_EXT_GPIO_UNIT: 834 memcpy(entity->guid, uvc_gpio_guid, 16); 835 break; 836 case UVC_ITT_CAMERA: 837 memcpy(entity->guid, uvc_camera_guid, 16); 838 break; 839 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 840 memcpy(entity->guid, uvc_media_transport_input_guid, 16); 841 break; 842 case UVC_VC_PROCESSING_UNIT: 843 memcpy(entity->guid, uvc_processing_guid, 16); 844 break; 845 } 846 847 entity->num_links = 0; 848 entity->num_pads = num_pads; 849 entity->pads = ((void *)(entity + 1)) + extra_size; 850 851 for (i = 0; i < num_inputs; ++i) 852 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 853 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads) 854 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; 855 856 entity->bNrInPins = num_inputs; 857 entity->baSourceID = (u8 *)(&entity->pads[num_pads]); 858 859 return entity; 860 } 861 862 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity, 863 const char *type_name, u8 string_id) 864 { 865 int ret; 866 867 /* 868 * First attempt to read the entity name from the device. If the entity 869 * has no associated string, or if reading the string fails (most 870 * likely due to a buggy firmware), fall back to default names based on 871 * the entity type. 872 */ 873 if (string_id) { 874 ret = usb_string(dev->udev, string_id, entity->name, 875 sizeof(entity->name)); 876 if (!ret) 877 return; 878 } 879 880 sprintf(entity->name, "%s %u", type_name, entity->id); 881 } 882 883 /* Parse vendor-specific extensions. */ 884 static int uvc_parse_vendor_control(struct uvc_device *dev, 885 const unsigned char *buffer, int buflen) 886 { 887 struct usb_device *udev = dev->udev; 888 struct usb_host_interface *alts = dev->intf->cur_altsetting; 889 struct uvc_entity *unit; 890 unsigned int n, p; 891 int handled = 0; 892 893 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 894 case 0x046d: /* Logitech */ 895 if (buffer[1] != 0x41 || buffer[2] != 0x01) 896 break; 897 898 /* 899 * Logitech implements several vendor specific functions 900 * through vendor specific extension units (LXU). 901 * 902 * The LXU descriptors are similar to XU descriptors 903 * (see "USB Device Video Class for Video Devices", section 904 * 3.7.2.6 "Extension Unit Descriptor") with the following 905 * differences: 906 * 907 * ---------------------------------------------------------- 908 * 0 bLength 1 Number 909 * Size of this descriptor, in bytes: 24+p+n*2 910 * ---------------------------------------------------------- 911 * 23+p+n bmControlsType N Bitmap 912 * Individual bits in the set are defined: 913 * 0: Absolute 914 * 1: Relative 915 * 916 * This bitset is mapped exactly the same as bmControls. 917 * ---------------------------------------------------------- 918 * 23+p+n*2 bReserved 1 Boolean 919 * ---------------------------------------------------------- 920 * 24+p+n*2 iExtension 1 Index 921 * Index of a string descriptor that describes this 922 * extension unit. 923 * ---------------------------------------------------------- 924 */ 925 p = buflen >= 22 ? buffer[21] : 0; 926 n = buflen >= 25 + p ? buffer[22+p] : 0; 927 928 if (buflen < 25 + p + 2*n) { 929 uvc_dbg(dev, DESCR, 930 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 931 udev->devnum, alts->desc.bInterfaceNumber); 932 break; 933 } 934 935 unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT, 936 buffer[3], p + 1, 2 * n); 937 if (IS_ERR(unit)) 938 return PTR_ERR(unit); 939 940 memcpy(unit->guid, &buffer[4], 16); 941 unit->extension.bNumControls = buffer[20]; 942 memcpy(unit->baSourceID, &buffer[22], p); 943 unit->extension.bControlSize = buffer[22+p]; 944 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 945 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit) 946 + n; 947 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 948 949 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]); 950 951 list_add_tail(&unit->list, &dev->entities); 952 handled = 1; 953 break; 954 } 955 956 return handled; 957 } 958 959 static int uvc_parse_standard_control(struct uvc_device *dev, 960 const unsigned char *buffer, int buflen) 961 { 962 struct usb_device *udev = dev->udev; 963 struct uvc_entity *unit, *term; 964 struct usb_interface *intf; 965 struct usb_host_interface *alts = dev->intf->cur_altsetting; 966 unsigned int i, n, p, len; 967 const char *type_name; 968 u16 type; 969 970 switch (buffer[2]) { 971 case UVC_VC_HEADER: 972 n = buflen >= 12 ? buffer[11] : 0; 973 974 if (buflen < 12 + n) { 975 uvc_dbg(dev, DESCR, 976 "device %d videocontrol interface %d HEADER error\n", 977 udev->devnum, alts->desc.bInterfaceNumber); 978 return -EINVAL; 979 } 980 981 dev->uvc_version = get_unaligned_le16(&buffer[3]); 982 dev->clock_frequency = get_unaligned_le32(&buffer[7]); 983 984 /* Parse all USB Video Streaming interfaces. */ 985 for (i = 0; i < n; ++i) { 986 intf = usb_ifnum_to_if(udev, buffer[12+i]); 987 if (intf == NULL) { 988 uvc_dbg(dev, DESCR, 989 "device %d interface %d doesn't exists\n", 990 udev->devnum, i); 991 continue; 992 } 993 994 uvc_parse_streaming(dev, intf); 995 } 996 break; 997 998 case UVC_VC_INPUT_TERMINAL: 999 if (buflen < 8) { 1000 uvc_dbg(dev, DESCR, 1001 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1002 udev->devnum, alts->desc.bInterfaceNumber); 1003 return -EINVAL; 1004 } 1005 1006 /* 1007 * Reject invalid terminal types that would cause issues: 1008 * 1009 * - The high byte must be non-zero, otherwise it would be 1010 * confused with a unit. 1011 * 1012 * - Bit 15 must be 0, as we use it internally as a terminal 1013 * direction flag. 1014 * 1015 * Other unknown types are accepted. 1016 */ 1017 type = get_unaligned_le16(&buffer[4]); 1018 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) { 1019 uvc_dbg(dev, DESCR, 1020 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1021 udev->devnum, alts->desc.bInterfaceNumber, 1022 buffer[3], type); 1023 return 0; 1024 } 1025 1026 n = 0; 1027 p = 0; 1028 len = 8; 1029 1030 if (type == UVC_ITT_CAMERA) { 1031 n = buflen >= 15 ? buffer[14] : 0; 1032 len = 15; 1033 1034 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1035 n = buflen >= 9 ? buffer[8] : 0; 1036 p = buflen >= 10 + n ? buffer[9+n] : 0; 1037 len = 10; 1038 } 1039 1040 if (buflen < len + n + p) { 1041 uvc_dbg(dev, DESCR, 1042 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1043 udev->devnum, alts->desc.bInterfaceNumber); 1044 return -EINVAL; 1045 } 1046 1047 term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT, 1048 buffer[3], 1, n + p); 1049 if (IS_ERR(term)) 1050 return PTR_ERR(term); 1051 1052 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 1053 term->camera.bControlSize = n; 1054 term->camera.bmControls = (u8 *)term + sizeof(*term); 1055 term->camera.wObjectiveFocalLengthMin = 1056 get_unaligned_le16(&buffer[8]); 1057 term->camera.wObjectiveFocalLengthMax = 1058 get_unaligned_le16(&buffer[10]); 1059 term->camera.wOcularFocalLength = 1060 get_unaligned_le16(&buffer[12]); 1061 memcpy(term->camera.bmControls, &buffer[15], n); 1062 } else if (UVC_ENTITY_TYPE(term) == 1063 UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1064 term->media.bControlSize = n; 1065 term->media.bmControls = (u8 *)term + sizeof(*term); 1066 term->media.bTransportModeSize = p; 1067 term->media.bmTransportModes = (u8 *)term 1068 + sizeof(*term) + n; 1069 memcpy(term->media.bmControls, &buffer[9], n); 1070 memcpy(term->media.bmTransportModes, &buffer[10+n], p); 1071 } 1072 1073 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 1074 type_name = "Camera"; 1075 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 1076 type_name = "Media"; 1077 else 1078 type_name = "Input"; 1079 1080 uvc_entity_set_name(dev, term, type_name, buffer[7]); 1081 1082 list_add_tail(&term->list, &dev->entities); 1083 break; 1084 1085 case UVC_VC_OUTPUT_TERMINAL: 1086 if (buflen < 9) { 1087 uvc_dbg(dev, DESCR, 1088 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n", 1089 udev->devnum, alts->desc.bInterfaceNumber); 1090 return -EINVAL; 1091 } 1092 1093 /* 1094 * Make sure the terminal type MSB is not null, otherwise it 1095 * could be confused with a unit. 1096 */ 1097 type = get_unaligned_le16(&buffer[4]); 1098 if ((type & 0xff00) == 0) { 1099 uvc_dbg(dev, DESCR, 1100 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1101 udev->devnum, alts->desc.bInterfaceNumber, 1102 buffer[3], type); 1103 return 0; 1104 } 1105 1106 term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT, 1107 buffer[3], 1, 0); 1108 if (IS_ERR(term)) 1109 return PTR_ERR(term); 1110 1111 memcpy(term->baSourceID, &buffer[7], 1); 1112 1113 uvc_entity_set_name(dev, term, "Output", buffer[8]); 1114 1115 list_add_tail(&term->list, &dev->entities); 1116 break; 1117 1118 case UVC_VC_SELECTOR_UNIT: 1119 p = buflen >= 5 ? buffer[4] : 0; 1120 1121 if (buflen < 5 || buflen < 6 + p) { 1122 uvc_dbg(dev, DESCR, 1123 "device %d videocontrol interface %d SELECTOR_UNIT error\n", 1124 udev->devnum, alts->desc.bInterfaceNumber); 1125 return -EINVAL; 1126 } 1127 1128 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 1129 p + 1, 0); 1130 if (IS_ERR(unit)) 1131 return PTR_ERR(unit); 1132 1133 memcpy(unit->baSourceID, &buffer[5], p); 1134 1135 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]); 1136 1137 list_add_tail(&unit->list, &dev->entities); 1138 break; 1139 1140 case UVC_VC_PROCESSING_UNIT: 1141 n = buflen >= 8 ? buffer[7] : 0; 1142 p = dev->uvc_version >= 0x0110 ? 10 : 9; 1143 1144 if (buflen < p + n) { 1145 uvc_dbg(dev, DESCR, 1146 "device %d videocontrol interface %d PROCESSING_UNIT error\n", 1147 udev->devnum, alts->desc.bInterfaceNumber); 1148 return -EINVAL; 1149 } 1150 1151 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n); 1152 if (IS_ERR(unit)) 1153 return PTR_ERR(unit); 1154 1155 memcpy(unit->baSourceID, &buffer[4], 1); 1156 unit->processing.wMaxMultiplier = 1157 get_unaligned_le16(&buffer[5]); 1158 unit->processing.bControlSize = buffer[7]; 1159 unit->processing.bmControls = (u8 *)unit + sizeof(*unit); 1160 memcpy(unit->processing.bmControls, &buffer[8], n); 1161 if (dev->uvc_version >= 0x0110) 1162 unit->processing.bmVideoStandards = buffer[9+n]; 1163 1164 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]); 1165 1166 list_add_tail(&unit->list, &dev->entities); 1167 break; 1168 1169 case UVC_VC_EXTENSION_UNIT: 1170 p = buflen >= 22 ? buffer[21] : 0; 1171 n = buflen >= 24 + p ? buffer[22+p] : 0; 1172 1173 if (buflen < 24 + p + n) { 1174 uvc_dbg(dev, DESCR, 1175 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 1176 udev->devnum, alts->desc.bInterfaceNumber); 1177 return -EINVAL; 1178 } 1179 1180 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 1181 p + 1, n); 1182 if (IS_ERR(unit)) 1183 return PTR_ERR(unit); 1184 1185 memcpy(unit->guid, &buffer[4], 16); 1186 unit->extension.bNumControls = buffer[20]; 1187 memcpy(unit->baSourceID, &buffer[22], p); 1188 unit->extension.bControlSize = buffer[22+p]; 1189 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 1190 memcpy(unit->extension.bmControls, &buffer[23+p], n); 1191 1192 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]); 1193 1194 list_add_tail(&unit->list, &dev->entities); 1195 break; 1196 1197 default: 1198 uvc_dbg(dev, DESCR, 1199 "Found an unknown CS_INTERFACE descriptor (%u)\n", 1200 buffer[2]); 1201 break; 1202 } 1203 1204 return 0; 1205 } 1206 1207 static int uvc_parse_control(struct uvc_device *dev) 1208 { 1209 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1210 const unsigned char *buffer = alts->extra; 1211 int buflen = alts->extralen; 1212 int ret; 1213 1214 /* 1215 * Parse the default alternate setting only, as the UVC specification 1216 * defines a single alternate setting, the default alternate setting 1217 * zero. 1218 */ 1219 1220 while (buflen > 2) { 1221 if (uvc_parse_vendor_control(dev, buffer, buflen) || 1222 buffer[1] != USB_DT_CS_INTERFACE) 1223 goto next_descriptor; 1224 1225 ret = uvc_parse_standard_control(dev, buffer, buflen); 1226 if (ret < 0) 1227 return ret; 1228 1229 next_descriptor: 1230 buflen -= buffer[0]; 1231 buffer += buffer[0]; 1232 } 1233 1234 /* 1235 * Check if the optional status endpoint is present. Built-in iSight 1236 * webcams have an interrupt endpoint but spit proprietary data that 1237 * don't conform to the UVC status endpoint messages. Don't try to 1238 * handle the interrupt endpoint for those cameras. 1239 */ 1240 if (alts->desc.bNumEndpoints == 1 && 1241 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1242 struct usb_host_endpoint *ep = &alts->endpoint[0]; 1243 struct usb_endpoint_descriptor *desc = &ep->desc; 1244 1245 if (usb_endpoint_is_int_in(desc) && 1246 le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1247 desc->bInterval != 0) { 1248 uvc_dbg(dev, DESCR, 1249 "Found a Status endpoint (addr %02x)\n", 1250 desc->bEndpointAddress); 1251 dev->int_ep = ep; 1252 } 1253 } 1254 1255 return 0; 1256 } 1257 1258 /* ----------------------------------------------------------------------------- 1259 * Privacy GPIO 1260 */ 1261 1262 static void uvc_gpio_event(struct uvc_device *dev) 1263 { 1264 struct uvc_entity *unit = dev->gpio_unit; 1265 struct uvc_video_chain *chain; 1266 u8 new_val; 1267 1268 if (!unit) 1269 return; 1270 1271 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy); 1272 1273 /* GPIO entities are always on the first chain. */ 1274 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list); 1275 uvc_ctrl_status_event(chain, unit->controls, &new_val); 1276 } 1277 1278 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity, 1279 u8 cs, void *data, u16 size) 1280 { 1281 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1) 1282 return -EINVAL; 1283 1284 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy); 1285 1286 return 0; 1287 } 1288 1289 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity, 1290 u8 cs, u8 *caps) 1291 { 1292 if (cs != UVC_CT_PRIVACY_CONTROL) 1293 return -EINVAL; 1294 1295 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE; 1296 return 0; 1297 } 1298 1299 static irqreturn_t uvc_gpio_irq(int irq, void *data) 1300 { 1301 struct uvc_device *dev = data; 1302 1303 uvc_gpio_event(dev); 1304 return IRQ_HANDLED; 1305 } 1306 1307 static int uvc_gpio_parse(struct uvc_device *dev) 1308 { 1309 struct uvc_entity *unit; 1310 struct gpio_desc *gpio_privacy; 1311 int irq; 1312 1313 gpio_privacy = devm_gpiod_get_optional(&dev->intf->dev, "privacy", 1314 GPIOD_IN); 1315 if (IS_ERR_OR_NULL(gpio_privacy)) 1316 return PTR_ERR_OR_ZERO(gpio_privacy); 1317 1318 irq = gpiod_to_irq(gpio_privacy); 1319 if (irq < 0) 1320 return dev_err_probe(&dev->intf->dev, irq, 1321 "No IRQ for privacy GPIO\n"); 1322 1323 unit = uvc_alloc_new_entity(dev, UVC_EXT_GPIO_UNIT, 1324 UVC_EXT_GPIO_UNIT_ID, 0, 1); 1325 if (IS_ERR(unit)) 1326 return PTR_ERR(unit); 1327 1328 unit->gpio.gpio_privacy = gpio_privacy; 1329 unit->gpio.irq = irq; 1330 unit->gpio.bControlSize = 1; 1331 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit); 1332 unit->gpio.bmControls[0] = 1; 1333 unit->get_cur = uvc_gpio_get_cur; 1334 unit->get_info = uvc_gpio_get_info; 1335 strscpy(unit->name, "GPIO", sizeof(unit->name)); 1336 1337 list_add_tail(&unit->list, &dev->entities); 1338 1339 dev->gpio_unit = unit; 1340 1341 return 0; 1342 } 1343 1344 static int uvc_gpio_init_irq(struct uvc_device *dev) 1345 { 1346 struct uvc_entity *unit = dev->gpio_unit; 1347 int ret; 1348 1349 if (!unit || unit->gpio.irq < 0) 1350 return 0; 1351 1352 ret = request_threaded_irq(unit->gpio.irq, NULL, uvc_gpio_irq, 1353 IRQF_ONESHOT | IRQF_TRIGGER_FALLING | 1354 IRQF_TRIGGER_RISING, 1355 "uvc_privacy_gpio", dev); 1356 1357 unit->gpio.initialized = !ret; 1358 1359 return ret; 1360 } 1361 1362 static void uvc_gpio_deinit(struct uvc_device *dev) 1363 { 1364 if (!dev->gpio_unit || !dev->gpio_unit->gpio.initialized) 1365 return; 1366 1367 free_irq(dev->gpio_unit->gpio.irq, dev); 1368 } 1369 1370 /* ------------------------------------------------------------------------ 1371 * UVC device scan 1372 */ 1373 1374 /* 1375 * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1376 * and containing the following units: 1377 * 1378 * - one or more Output Terminals (USB Streaming or Display) 1379 * - zero or one Processing Unit 1380 * - zero, one or more single-input Selector Units 1381 * - zero or one multiple-input Selector Units, provided all inputs are 1382 * connected to input terminals 1383 * - zero, one or mode single-input Extension Units 1384 * - one or more Input Terminals (Camera, External or USB Streaming) 1385 * 1386 * The terminal and units must match on of the following structures: 1387 * 1388 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 1389 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 1390 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 1391 * 1392 * +---------+ +---------+ -> OTT_*(0) 1393 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 1394 * +---------+ +---------+ -> OTT_*(n) 1395 * 1396 * The Processing Unit and Extension Units can be in any order. Additional 1397 * Extension Units connected to the main chain as single-unit branches are 1398 * also supported. Single-input Selector Units are ignored. 1399 */ 1400 static int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1401 struct uvc_entity *entity) 1402 { 1403 switch (UVC_ENTITY_TYPE(entity)) { 1404 case UVC_VC_EXTENSION_UNIT: 1405 uvc_dbg_cont(PROBE, " <- XU %d", entity->id); 1406 1407 if (entity->bNrInPins != 1) { 1408 uvc_dbg(chain->dev, DESCR, 1409 "Extension unit %d has more than 1 input pin\n", 1410 entity->id); 1411 return -1; 1412 } 1413 1414 break; 1415 1416 case UVC_VC_PROCESSING_UNIT: 1417 uvc_dbg_cont(PROBE, " <- PU %d", entity->id); 1418 1419 if (chain->processing != NULL) { 1420 uvc_dbg(chain->dev, DESCR, 1421 "Found multiple Processing Units in chain\n"); 1422 return -1; 1423 } 1424 1425 chain->processing = entity; 1426 break; 1427 1428 case UVC_VC_SELECTOR_UNIT: 1429 uvc_dbg_cont(PROBE, " <- SU %d", entity->id); 1430 1431 /* Single-input selector units are ignored. */ 1432 if (entity->bNrInPins == 1) 1433 break; 1434 1435 if (chain->selector != NULL) { 1436 uvc_dbg(chain->dev, DESCR, 1437 "Found multiple Selector Units in chain\n"); 1438 return -1; 1439 } 1440 1441 chain->selector = entity; 1442 break; 1443 1444 case UVC_ITT_VENDOR_SPECIFIC: 1445 case UVC_ITT_CAMERA: 1446 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1447 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1448 1449 break; 1450 1451 case UVC_OTT_VENDOR_SPECIFIC: 1452 case UVC_OTT_DISPLAY: 1453 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1454 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1455 1456 break; 1457 1458 case UVC_TT_STREAMING: 1459 if (UVC_ENTITY_IS_ITERM(entity)) 1460 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1461 else 1462 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1463 1464 break; 1465 1466 default: 1467 uvc_dbg(chain->dev, DESCR, 1468 "Unsupported entity type 0x%04x found in chain\n", 1469 UVC_ENTITY_TYPE(entity)); 1470 return -1; 1471 } 1472 1473 list_add_tail(&entity->chain, &chain->entities); 1474 return 0; 1475 } 1476 1477 static int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1478 struct uvc_entity *entity, struct uvc_entity *prev) 1479 { 1480 struct uvc_entity *forward; 1481 int found; 1482 1483 /* Forward scan */ 1484 forward = NULL; 1485 found = 0; 1486 1487 while (1) { 1488 forward = uvc_entity_by_reference(chain->dev, entity->id, 1489 forward); 1490 if (forward == NULL) 1491 break; 1492 if (forward == prev) 1493 continue; 1494 if (forward->chain.next || forward->chain.prev) { 1495 uvc_dbg(chain->dev, DESCR, 1496 "Found reference to entity %d already in chain\n", 1497 forward->id); 1498 return -EINVAL; 1499 } 1500 1501 switch (UVC_ENTITY_TYPE(forward)) { 1502 case UVC_VC_EXTENSION_UNIT: 1503 if (forward->bNrInPins != 1) { 1504 uvc_dbg(chain->dev, DESCR, 1505 "Extension unit %d has more than 1 input pin\n", 1506 forward->id); 1507 return -EINVAL; 1508 } 1509 1510 /* 1511 * Some devices reference an output terminal as the 1512 * source of extension units. This is incorrect, as 1513 * output terminals only have an input pin, and thus 1514 * can't be connected to any entity in the forward 1515 * direction. The resulting topology would cause issues 1516 * when registering the media controller graph. To 1517 * avoid this problem, connect the extension unit to 1518 * the source of the output terminal instead. 1519 */ 1520 if (UVC_ENTITY_IS_OTERM(entity)) { 1521 struct uvc_entity *source; 1522 1523 source = uvc_entity_by_id(chain->dev, 1524 entity->baSourceID[0]); 1525 if (!source) { 1526 uvc_dbg(chain->dev, DESCR, 1527 "Can't connect extension unit %u in chain\n", 1528 forward->id); 1529 break; 1530 } 1531 1532 forward->baSourceID[0] = source->id; 1533 } 1534 1535 list_add_tail(&forward->chain, &chain->entities); 1536 if (!found) 1537 uvc_dbg_cont(PROBE, " (->"); 1538 1539 uvc_dbg_cont(PROBE, " XU %d", forward->id); 1540 found = 1; 1541 break; 1542 1543 case UVC_OTT_VENDOR_SPECIFIC: 1544 case UVC_OTT_DISPLAY: 1545 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1546 case UVC_TT_STREAMING: 1547 if (UVC_ENTITY_IS_ITERM(forward)) { 1548 uvc_dbg(chain->dev, DESCR, 1549 "Unsupported input terminal %u\n", 1550 forward->id); 1551 return -EINVAL; 1552 } 1553 1554 if (UVC_ENTITY_IS_OTERM(entity)) { 1555 uvc_dbg(chain->dev, DESCR, 1556 "Unsupported connection between output terminals %u and %u\n", 1557 entity->id, forward->id); 1558 break; 1559 } 1560 1561 list_add_tail(&forward->chain, &chain->entities); 1562 if (!found) 1563 uvc_dbg_cont(PROBE, " (->"); 1564 1565 uvc_dbg_cont(PROBE, " OT %d", forward->id); 1566 found = 1; 1567 break; 1568 } 1569 } 1570 if (found) 1571 uvc_dbg_cont(PROBE, ")"); 1572 1573 return 0; 1574 } 1575 1576 static int uvc_scan_chain_backward(struct uvc_video_chain *chain, 1577 struct uvc_entity **_entity) 1578 { 1579 struct uvc_entity *entity = *_entity; 1580 struct uvc_entity *term; 1581 int id = -EINVAL, i; 1582 1583 switch (UVC_ENTITY_TYPE(entity)) { 1584 case UVC_VC_EXTENSION_UNIT: 1585 case UVC_VC_PROCESSING_UNIT: 1586 id = entity->baSourceID[0]; 1587 break; 1588 1589 case UVC_VC_SELECTOR_UNIT: 1590 /* Single-input selector units are ignored. */ 1591 if (entity->bNrInPins == 1) { 1592 id = entity->baSourceID[0]; 1593 break; 1594 } 1595 1596 uvc_dbg_cont(PROBE, " <- IT"); 1597 1598 chain->selector = entity; 1599 for (i = 0; i < entity->bNrInPins; ++i) { 1600 id = entity->baSourceID[i]; 1601 term = uvc_entity_by_id(chain->dev, id); 1602 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1603 uvc_dbg(chain->dev, DESCR, 1604 "Selector unit %d input %d isn't connected to an input terminal\n", 1605 entity->id, i); 1606 return -1; 1607 } 1608 1609 if (term->chain.next || term->chain.prev) { 1610 uvc_dbg(chain->dev, DESCR, 1611 "Found reference to entity %d already in chain\n", 1612 term->id); 1613 return -EINVAL; 1614 } 1615 1616 uvc_dbg_cont(PROBE, " %d", term->id); 1617 1618 list_add_tail(&term->chain, &chain->entities); 1619 uvc_scan_chain_forward(chain, term, entity); 1620 } 1621 1622 uvc_dbg_cont(PROBE, "\n"); 1623 1624 id = 0; 1625 break; 1626 1627 case UVC_ITT_VENDOR_SPECIFIC: 1628 case UVC_ITT_CAMERA: 1629 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1630 case UVC_OTT_VENDOR_SPECIFIC: 1631 case UVC_OTT_DISPLAY: 1632 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1633 case UVC_TT_STREAMING: 1634 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 1635 break; 1636 } 1637 1638 if (id <= 0) { 1639 *_entity = NULL; 1640 return id; 1641 } 1642 1643 entity = uvc_entity_by_id(chain->dev, id); 1644 if (entity == NULL) { 1645 uvc_dbg(chain->dev, DESCR, 1646 "Found reference to unknown entity %d\n", id); 1647 return -EINVAL; 1648 } 1649 1650 *_entity = entity; 1651 return 0; 1652 } 1653 1654 static int uvc_scan_chain(struct uvc_video_chain *chain, 1655 struct uvc_entity *term) 1656 { 1657 struct uvc_entity *entity, *prev; 1658 1659 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:"); 1660 1661 entity = term; 1662 prev = NULL; 1663 1664 while (entity != NULL) { 1665 /* Entity must not be part of an existing chain */ 1666 if (entity->chain.next || entity->chain.prev) { 1667 uvc_dbg(chain->dev, DESCR, 1668 "Found reference to entity %d already in chain\n", 1669 entity->id); 1670 return -EINVAL; 1671 } 1672 1673 /* Process entity */ 1674 if (uvc_scan_chain_entity(chain, entity) < 0) 1675 return -EINVAL; 1676 1677 /* Forward scan */ 1678 if (uvc_scan_chain_forward(chain, entity, prev) < 0) 1679 return -EINVAL; 1680 1681 /* Backward scan */ 1682 prev = entity; 1683 if (uvc_scan_chain_backward(chain, &entity) < 0) 1684 return -EINVAL; 1685 } 1686 1687 return 0; 1688 } 1689 1690 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 1691 char *buffer) 1692 { 1693 struct uvc_entity *term; 1694 unsigned int nterms = 0; 1695 char *p = buffer; 1696 1697 list_for_each_entry(term, terms, chain) { 1698 if (!UVC_ENTITY_IS_TERM(term) || 1699 UVC_TERM_DIRECTION(term) != dir) 1700 continue; 1701 1702 if (nterms) 1703 p += sprintf(p, ","); 1704 if (++nterms >= 4) { 1705 p += sprintf(p, "..."); 1706 break; 1707 } 1708 p += sprintf(p, "%u", term->id); 1709 } 1710 1711 return p - buffer; 1712 } 1713 1714 static const char *uvc_print_chain(struct uvc_video_chain *chain) 1715 { 1716 static char buffer[43]; 1717 char *p = buffer; 1718 1719 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 1720 p += sprintf(p, " -> "); 1721 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 1722 1723 return buffer; 1724 } 1725 1726 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) 1727 { 1728 struct uvc_video_chain *chain; 1729 1730 chain = kzalloc(sizeof(*chain), GFP_KERNEL); 1731 if (chain == NULL) 1732 return NULL; 1733 1734 INIT_LIST_HEAD(&chain->entities); 1735 mutex_init(&chain->ctrl_mutex); 1736 chain->dev = dev; 1737 v4l2_prio_init(&chain->prio); 1738 1739 return chain; 1740 } 1741 1742 /* 1743 * Fallback heuristic for devices that don't connect units and terminals in a 1744 * valid chain. 1745 * 1746 * Some devices have invalid baSourceID references, causing uvc_scan_chain() 1747 * to fail, but if we just take the entities we can find and put them together 1748 * in the most sensible chain we can think of, turns out they do work anyway. 1749 * Note: This heuristic assumes there is a single chain. 1750 * 1751 * At the time of writing, devices known to have such a broken chain are 1752 * - Acer Integrated Camera (5986:055a) 1753 * - Realtek rtl157a7 (0bda:57a7) 1754 */ 1755 static int uvc_scan_fallback(struct uvc_device *dev) 1756 { 1757 struct uvc_video_chain *chain; 1758 struct uvc_entity *iterm = NULL; 1759 struct uvc_entity *oterm = NULL; 1760 struct uvc_entity *entity; 1761 struct uvc_entity *prev; 1762 1763 /* 1764 * Start by locating the input and output terminals. We only support 1765 * devices with exactly one of each for now. 1766 */ 1767 list_for_each_entry(entity, &dev->entities, list) { 1768 if (UVC_ENTITY_IS_ITERM(entity)) { 1769 if (iterm) 1770 return -EINVAL; 1771 iterm = entity; 1772 } 1773 1774 if (UVC_ENTITY_IS_OTERM(entity)) { 1775 if (oterm) 1776 return -EINVAL; 1777 oterm = entity; 1778 } 1779 } 1780 1781 if (iterm == NULL || oterm == NULL) 1782 return -EINVAL; 1783 1784 /* Allocate the chain and fill it. */ 1785 chain = uvc_alloc_chain(dev); 1786 if (chain == NULL) 1787 return -ENOMEM; 1788 1789 if (uvc_scan_chain_entity(chain, oterm) < 0) 1790 goto error; 1791 1792 prev = oterm; 1793 1794 /* 1795 * Add all Processing and Extension Units with two pads. The order 1796 * doesn't matter much, use reverse list traversal to connect units in 1797 * UVC descriptor order as we build the chain from output to input. This 1798 * leads to units appearing in the order meant by the manufacturer for 1799 * the cameras known to require this heuristic. 1800 */ 1801 list_for_each_entry_reverse(entity, &dev->entities, list) { 1802 if (entity->type != UVC_VC_PROCESSING_UNIT && 1803 entity->type != UVC_VC_EXTENSION_UNIT) 1804 continue; 1805 1806 if (entity->num_pads != 2) 1807 continue; 1808 1809 if (uvc_scan_chain_entity(chain, entity) < 0) 1810 goto error; 1811 1812 prev->baSourceID[0] = entity->id; 1813 prev = entity; 1814 } 1815 1816 if (uvc_scan_chain_entity(chain, iterm) < 0) 1817 goto error; 1818 1819 prev->baSourceID[0] = iterm->id; 1820 1821 list_add_tail(&chain->list, &dev->chains); 1822 1823 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n", 1824 uvc_print_chain(chain)); 1825 1826 return 0; 1827 1828 error: 1829 kfree(chain); 1830 return -EINVAL; 1831 } 1832 1833 /* 1834 * Scan the device for video chains and register video devices. 1835 * 1836 * Chains are scanned starting at their output terminals and walked backwards. 1837 */ 1838 static int uvc_scan_device(struct uvc_device *dev) 1839 { 1840 struct uvc_video_chain *chain; 1841 struct uvc_entity *term; 1842 1843 list_for_each_entry(term, &dev->entities, list) { 1844 if (!UVC_ENTITY_IS_OTERM(term)) 1845 continue; 1846 1847 /* 1848 * If the terminal is already included in a chain, skip it. 1849 * This can happen for chains that have multiple output 1850 * terminals, where all output terminals beside the first one 1851 * will be inserted in the chain in forward scans. 1852 */ 1853 if (term->chain.next || term->chain.prev) 1854 continue; 1855 1856 chain = uvc_alloc_chain(dev); 1857 if (chain == NULL) 1858 return -ENOMEM; 1859 1860 term->flags |= UVC_ENTITY_FLAG_DEFAULT; 1861 1862 if (uvc_scan_chain(chain, term) < 0) { 1863 kfree(chain); 1864 continue; 1865 } 1866 1867 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n", 1868 uvc_print_chain(chain)); 1869 1870 list_add_tail(&chain->list, &dev->chains); 1871 } 1872 1873 if (list_empty(&dev->chains)) 1874 uvc_scan_fallback(dev); 1875 1876 if (list_empty(&dev->chains)) { 1877 dev_info(&dev->udev->dev, "No valid video chain found.\n"); 1878 return -1; 1879 } 1880 1881 /* Add GPIO entity to the first chain. */ 1882 if (dev->gpio_unit) { 1883 chain = list_first_entry(&dev->chains, 1884 struct uvc_video_chain, list); 1885 list_add_tail(&dev->gpio_unit->chain, &chain->entities); 1886 } 1887 1888 return 0; 1889 } 1890 1891 /* ------------------------------------------------------------------------ 1892 * Video device registration and unregistration 1893 */ 1894 1895 /* 1896 * Delete the UVC device. 1897 * 1898 * Called by the kernel when the last reference to the uvc_device structure 1899 * is released. 1900 * 1901 * As this function is called after or during disconnect(), all URBs have 1902 * already been cancelled by the USB core. There is no need to kill the 1903 * interrupt URB manually. 1904 */ 1905 static void uvc_delete(struct kref *kref) 1906 { 1907 struct uvc_device *dev = container_of(kref, struct uvc_device, ref); 1908 struct list_head *p, *n; 1909 1910 uvc_status_cleanup(dev); 1911 uvc_ctrl_cleanup_device(dev); 1912 1913 usb_put_intf(dev->intf); 1914 usb_put_dev(dev->udev); 1915 1916 #ifdef CONFIG_MEDIA_CONTROLLER 1917 media_device_cleanup(&dev->mdev); 1918 #endif 1919 1920 list_for_each_safe(p, n, &dev->chains) { 1921 struct uvc_video_chain *chain; 1922 1923 chain = list_entry(p, struct uvc_video_chain, list); 1924 kfree(chain); 1925 } 1926 1927 list_for_each_safe(p, n, &dev->entities) { 1928 struct uvc_entity *entity; 1929 1930 entity = list_entry(p, struct uvc_entity, list); 1931 #ifdef CONFIG_MEDIA_CONTROLLER 1932 uvc_mc_cleanup_entity(entity); 1933 #endif 1934 kfree(entity); 1935 } 1936 1937 list_for_each_safe(p, n, &dev->streams) { 1938 struct uvc_streaming *streaming; 1939 1940 streaming = list_entry(p, struct uvc_streaming, list); 1941 usb_driver_release_interface(&uvc_driver.driver, 1942 streaming->intf); 1943 uvc_stream_delete(streaming); 1944 } 1945 1946 kfree(dev); 1947 } 1948 1949 static void uvc_release(struct video_device *vdev) 1950 { 1951 struct uvc_streaming *stream = video_get_drvdata(vdev); 1952 struct uvc_device *dev = stream->dev; 1953 1954 kref_put(&dev->ref, uvc_delete); 1955 } 1956 1957 /* 1958 * Unregister the video devices. 1959 */ 1960 static void uvc_unregister_video(struct uvc_device *dev) 1961 { 1962 struct uvc_streaming *stream; 1963 1964 uvc_gpio_deinit(dev); 1965 1966 list_for_each_entry(stream, &dev->streams, list) { 1967 /* Nothing to do here, continue. */ 1968 if (!video_is_registered(&stream->vdev)) 1969 continue; 1970 1971 /* 1972 * For stream->vdev we follow the same logic as: 1973 * vb2_video_unregister_device(). 1974 */ 1975 1976 /* 1. Take a reference to vdev */ 1977 get_device(&stream->vdev.dev); 1978 1979 /* 2. Ensure that no new ioctls can be called. */ 1980 video_unregister_device(&stream->vdev); 1981 1982 /* 3. Wait for old ioctls to finish. */ 1983 mutex_lock(&stream->mutex); 1984 1985 /* 4. Stop streaming. */ 1986 uvc_queue_release(&stream->queue); 1987 1988 mutex_unlock(&stream->mutex); 1989 1990 put_device(&stream->vdev.dev); 1991 1992 /* 1993 * For stream->meta.vdev we can directly call: 1994 * vb2_video_unregister_device(). 1995 */ 1996 vb2_video_unregister_device(&stream->meta.vdev); 1997 1998 /* 1999 * Now both vdevs are not streaming and all the ioctls will 2000 * return -ENODEV. 2001 */ 2002 2003 uvc_debugfs_cleanup_stream(stream); 2004 } 2005 2006 uvc_status_unregister(dev); 2007 2008 if (dev->vdev.dev) 2009 v4l2_device_unregister(&dev->vdev); 2010 #ifdef CONFIG_MEDIA_CONTROLLER 2011 if (media_devnode_is_registered(dev->mdev.devnode)) 2012 media_device_unregister(&dev->mdev); 2013 #endif 2014 } 2015 2016 int uvc_register_video_device(struct uvc_device *dev, 2017 struct uvc_streaming *stream, 2018 struct video_device *vdev, 2019 struct uvc_video_queue *queue, 2020 enum v4l2_buf_type type, 2021 const struct v4l2_file_operations *fops, 2022 const struct v4l2_ioctl_ops *ioctl_ops) 2023 { 2024 int ret; 2025 2026 /* Initialize the video buffers queue. */ 2027 ret = uvc_queue_init(queue, type); 2028 if (ret) 2029 return ret; 2030 2031 /* Register the device with V4L. */ 2032 2033 /* 2034 * We already hold a reference to dev->udev. The video device will be 2035 * unregistered before the reference is released, so we don't need to 2036 * get another one. 2037 */ 2038 vdev->v4l2_dev = &dev->vdev; 2039 vdev->fops = fops; 2040 vdev->ioctl_ops = ioctl_ops; 2041 vdev->release = uvc_release; 2042 vdev->prio = &stream->chain->prio; 2043 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2044 vdev->vfl_dir = VFL_DIR_TX; 2045 else 2046 vdev->vfl_dir = VFL_DIR_RX; 2047 2048 switch (type) { 2049 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 2050 default: 2051 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 2052 break; 2053 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 2054 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 2055 break; 2056 case V4L2_BUF_TYPE_META_CAPTURE: 2057 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; 2058 break; 2059 } 2060 2061 strscpy(vdev->name, dev->name, sizeof(vdev->name)); 2062 2063 /* 2064 * Set the driver data before calling video_register_device, otherwise 2065 * the file open() handler might race us. 2066 */ 2067 video_set_drvdata(vdev, stream); 2068 2069 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); 2070 if (ret < 0) { 2071 dev_err(&stream->intf->dev, 2072 "Failed to register %s device (%d).\n", 2073 v4l2_type_names[type], ret); 2074 return ret; 2075 } 2076 2077 kref_get(&dev->ref); 2078 return 0; 2079 } 2080 2081 static int uvc_register_video(struct uvc_device *dev, 2082 struct uvc_streaming *stream) 2083 { 2084 int ret; 2085 2086 /* Initialize the streaming interface with default parameters. */ 2087 ret = uvc_video_init(stream); 2088 if (ret < 0) { 2089 dev_err(&stream->intf->dev, 2090 "Failed to initialize the device (%d).\n", ret); 2091 return ret; 2092 } 2093 2094 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 2095 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE 2096 | V4L2_CAP_META_CAPTURE; 2097 else 2098 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; 2099 2100 uvc_debugfs_init_stream(stream); 2101 2102 /* Register the device with V4L. */ 2103 return uvc_register_video_device(dev, stream, &stream->vdev, 2104 &stream->queue, stream->type, 2105 &uvc_fops, &uvc_ioctl_ops); 2106 } 2107 2108 /* 2109 * Register all video devices in all chains. 2110 */ 2111 static int uvc_register_terms(struct uvc_device *dev, 2112 struct uvc_video_chain *chain) 2113 { 2114 struct uvc_streaming *stream; 2115 struct uvc_entity *term; 2116 int ret; 2117 2118 list_for_each_entry(term, &chain->entities, chain) { 2119 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 2120 continue; 2121 2122 stream = uvc_stream_by_id(dev, term->id); 2123 if (stream == NULL) { 2124 dev_info(&dev->udev->dev, 2125 "No streaming interface found for terminal %u.", 2126 term->id); 2127 continue; 2128 } 2129 2130 stream->chain = chain; 2131 ret = uvc_register_video(dev, stream); 2132 if (ret < 0) 2133 return ret; 2134 2135 /* 2136 * Register a metadata node, but ignore a possible failure, 2137 * complete registration of video nodes anyway. 2138 */ 2139 uvc_meta_register(stream); 2140 2141 term->vdev = &stream->vdev; 2142 } 2143 2144 return 0; 2145 } 2146 2147 static int uvc_register_chains(struct uvc_device *dev) 2148 { 2149 struct uvc_video_chain *chain; 2150 int ret; 2151 2152 list_for_each_entry(chain, &dev->chains, list) { 2153 ret = uvc_register_terms(dev, chain); 2154 if (ret < 0) 2155 return ret; 2156 2157 #ifdef CONFIG_MEDIA_CONTROLLER 2158 ret = uvc_mc_register_entities(chain); 2159 if (ret < 0) 2160 dev_info(&dev->udev->dev, 2161 "Failed to register entities (%d).\n", ret); 2162 #endif 2163 } 2164 2165 return 0; 2166 } 2167 2168 /* ------------------------------------------------------------------------ 2169 * USB probe, disconnect, suspend and resume 2170 */ 2171 2172 static const struct uvc_device_info uvc_quirk_none = { 0 }; 2173 2174 static int uvc_probe(struct usb_interface *intf, 2175 const struct usb_device_id *id) 2176 { 2177 struct usb_device *udev = interface_to_usbdev(intf); 2178 struct uvc_device *dev; 2179 const struct uvc_device_info *info = 2180 (const struct uvc_device_info *)id->driver_info; 2181 int function; 2182 int ret; 2183 2184 /* Allocate memory for the device and initialize it. */ 2185 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2186 if (dev == NULL) 2187 return -ENOMEM; 2188 2189 INIT_LIST_HEAD(&dev->entities); 2190 INIT_LIST_HEAD(&dev->chains); 2191 INIT_LIST_HEAD(&dev->streams); 2192 kref_init(&dev->ref); 2193 atomic_set(&dev->nmappings, 0); 2194 2195 dev->udev = usb_get_dev(udev); 2196 dev->intf = usb_get_intf(intf); 2197 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 2198 dev->info = info ? info : &uvc_quirk_none; 2199 dev->quirks = uvc_quirks_param == -1 2200 ? dev->info->quirks : uvc_quirks_param; 2201 2202 if (id->idVendor && id->idProduct) 2203 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n", 2204 udev->devpath, id->idVendor, id->idProduct); 2205 else 2206 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n", 2207 udev->devpath); 2208 2209 if (udev->product != NULL) 2210 strscpy(dev->name, udev->product, sizeof(dev->name)); 2211 else 2212 snprintf(dev->name, sizeof(dev->name), 2213 "UVC Camera (%04x:%04x)", 2214 le16_to_cpu(udev->descriptor.idVendor), 2215 le16_to_cpu(udev->descriptor.idProduct)); 2216 2217 /* 2218 * Add iFunction or iInterface to names when available as additional 2219 * distinguishers between interfaces. iFunction is prioritized over 2220 * iInterface which matches Windows behavior at the point of writing. 2221 */ 2222 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0) 2223 function = intf->intf_assoc->iFunction; 2224 else 2225 function = intf->cur_altsetting->desc.iInterface; 2226 if (function != 0) { 2227 size_t len; 2228 2229 strlcat(dev->name, ": ", sizeof(dev->name)); 2230 len = strlen(dev->name); 2231 usb_string(udev, function, dev->name + len, 2232 sizeof(dev->name) - len); 2233 } 2234 2235 /* Initialize the media device. */ 2236 #ifdef CONFIG_MEDIA_CONTROLLER 2237 dev->mdev.dev = &intf->dev; 2238 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); 2239 if (udev->serial) 2240 strscpy(dev->mdev.serial, udev->serial, 2241 sizeof(dev->mdev.serial)); 2242 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info)); 2243 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 2244 media_device_init(&dev->mdev); 2245 2246 dev->vdev.mdev = &dev->mdev; 2247 #endif 2248 2249 /* Parse the Video Class control descriptor. */ 2250 if (uvc_parse_control(dev) < 0) { 2251 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n"); 2252 goto error; 2253 } 2254 2255 /* Parse the associated GPIOs. */ 2256 if (uvc_gpio_parse(dev) < 0) { 2257 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n"); 2258 goto error; 2259 } 2260 2261 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", 2262 dev->uvc_version >> 8, dev->uvc_version & 0xff, 2263 udev->product ? udev->product : "<unnamed>", 2264 le16_to_cpu(udev->descriptor.idVendor), 2265 le16_to_cpu(udev->descriptor.idProduct)); 2266 2267 if (dev->quirks != dev->info->quirks) { 2268 dev_info(&dev->udev->dev, 2269 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n", 2270 dev->quirks); 2271 dev_info(&dev->udev->dev, 2272 "Please report required quirks to the linux-media mailing list.\n"); 2273 } 2274 2275 if (dev->info->uvc_version) { 2276 dev->uvc_version = dev->info->uvc_version; 2277 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n", 2278 dev->uvc_version >> 8, dev->uvc_version & 0xff); 2279 } 2280 2281 /* Register the V4L2 device. */ 2282 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) 2283 goto error; 2284 2285 /* Scan the device for video chains. */ 2286 if (uvc_scan_device(dev) < 0) 2287 goto error; 2288 2289 /* Initialize controls. */ 2290 if (uvc_ctrl_init_device(dev) < 0) 2291 goto error; 2292 2293 /* Register video device nodes. */ 2294 if (uvc_register_chains(dev) < 0) 2295 goto error; 2296 2297 #ifdef CONFIG_MEDIA_CONTROLLER 2298 /* Register the media device node */ 2299 if (media_device_register(&dev->mdev) < 0) 2300 goto error; 2301 #endif 2302 /* Save our data pointer in the interface data. */ 2303 usb_set_intfdata(intf, dev); 2304 2305 /* Initialize the interrupt URB. */ 2306 ret = uvc_status_init(dev); 2307 if (ret < 0) { 2308 dev_info(&dev->udev->dev, 2309 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n", 2310 ret); 2311 } 2312 2313 ret = uvc_gpio_init_irq(dev); 2314 if (ret < 0) { 2315 dev_err(&dev->udev->dev, 2316 "Unable to request privacy GPIO IRQ (%d)\n", ret); 2317 goto error; 2318 } 2319 2320 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME) 2321 udev->quirks &= ~USB_QUIRK_RESET_RESUME; 2322 2323 if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND)) 2324 usb_enable_autosuspend(udev); 2325 2326 uvc_dbg(dev, PROBE, "UVC device initialized\n"); 2327 2328 return 0; 2329 2330 error: 2331 uvc_unregister_video(dev); 2332 kref_put(&dev->ref, uvc_delete); 2333 return -ENODEV; 2334 } 2335 2336 static void uvc_disconnect(struct usb_interface *intf) 2337 { 2338 struct uvc_device *dev = usb_get_intfdata(intf); 2339 2340 /* 2341 * Set the USB interface data to NULL. This can be done outside the 2342 * lock, as there's no other reader. 2343 */ 2344 usb_set_intfdata(intf, NULL); 2345 2346 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2347 UVC_SC_VIDEOSTREAMING) 2348 return; 2349 2350 uvc_unregister_video(dev); 2351 kref_put(&dev->ref, uvc_delete); 2352 } 2353 2354 static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 2355 { 2356 struct uvc_device *dev = usb_get_intfdata(intf); 2357 struct uvc_streaming *stream; 2358 2359 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n", 2360 intf->cur_altsetting->desc.bInterfaceNumber); 2361 2362 /* Controls are cached on the fly so they don't need to be saved. */ 2363 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2364 UVC_SC_VIDEOCONTROL) { 2365 uvc_status_suspend(dev); 2366 return 0; 2367 } 2368 2369 list_for_each_entry(stream, &dev->streams, list) { 2370 if (stream->intf == intf) 2371 return uvc_video_suspend(stream); 2372 } 2373 2374 uvc_dbg(dev, SUSPEND, 2375 "Suspend: video streaming USB interface mismatch\n"); 2376 return -EINVAL; 2377 } 2378 2379 static int __uvc_resume(struct usb_interface *intf, int reset) 2380 { 2381 struct uvc_device *dev = usb_get_intfdata(intf); 2382 struct uvc_streaming *stream; 2383 int ret = 0; 2384 2385 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n", 2386 intf->cur_altsetting->desc.bInterfaceNumber); 2387 2388 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2389 UVC_SC_VIDEOCONTROL) { 2390 if (reset) { 2391 ret = uvc_ctrl_restore_values(dev); 2392 if (ret < 0) 2393 return ret; 2394 } 2395 2396 return uvc_status_resume(dev); 2397 } 2398 2399 list_for_each_entry(stream, &dev->streams, list) { 2400 if (stream->intf == intf) { 2401 ret = uvc_video_resume(stream, reset); 2402 if (ret < 0) 2403 uvc_queue_streamoff(&stream->queue, 2404 stream->queue.queue.type); 2405 return ret; 2406 } 2407 } 2408 2409 uvc_dbg(dev, SUSPEND, 2410 "Resume: video streaming USB interface mismatch\n"); 2411 return -EINVAL; 2412 } 2413 2414 static int uvc_resume(struct usb_interface *intf) 2415 { 2416 return __uvc_resume(intf, 0); 2417 } 2418 2419 static int uvc_reset_resume(struct usb_interface *intf) 2420 { 2421 return __uvc_resume(intf, 1); 2422 } 2423 2424 /* ------------------------------------------------------------------------ 2425 * Module parameters 2426 */ 2427 2428 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) 2429 { 2430 if (uvc_clock_param == CLOCK_MONOTONIC) 2431 return sprintf(buffer, "CLOCK_MONOTONIC"); 2432 else 2433 return sprintf(buffer, "CLOCK_REALTIME"); 2434 } 2435 2436 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) 2437 { 2438 if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 2439 val += strlen("clock_"); 2440 2441 if (strcasecmp(val, "monotonic") == 0) 2442 uvc_clock_param = CLOCK_MONOTONIC; 2443 else if (strcasecmp(val, "realtime") == 0) 2444 uvc_clock_param = CLOCK_REALTIME; 2445 else 2446 return -EINVAL; 2447 2448 return 0; 2449 } 2450 2451 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 2452 &uvc_clock_param, 0644); 2453 MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 2454 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644); 2455 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); 2456 2457 static int param_set_nodrop(const char *val, const struct kernel_param *kp) 2458 { 2459 pr_warn_once("uvcvideo: " 2460 DEPRECATED 2461 "nodrop parameter will be eventually removed.\n"); 2462 return param_set_bool(val, kp); 2463 } 2464 2465 static const struct kernel_param_ops param_ops_nodrop = { 2466 .set = param_set_nodrop, 2467 .get = param_get_uint, 2468 }; 2469 2470 param_check_uint(nodrop, &uvc_no_drop_param); 2471 module_param_cb(nodrop, ¶m_ops_nodrop, &uvc_no_drop_param, 0644); 2472 __MODULE_PARM_TYPE(nodrop, "uint"); 2473 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 2474 2475 module_param_named(quirks, uvc_quirks_param, uint, 0644); 2476 MODULE_PARM_DESC(quirks, "Forced device quirks"); 2477 module_param_named(trace, uvc_dbg_param, uint, 0644); 2478 MODULE_PARM_DESC(trace, "Trace level bitmask"); 2479 module_param_named(timeout, uvc_timeout_param, uint, 0644); 2480 MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 2481 2482 /* ------------------------------------------------------------------------ 2483 * Driver initialization and cleanup 2484 */ 2485 2486 static const struct uvc_device_info uvc_quirk_probe_minmax = { 2487 .quirks = UVC_QUIRK_PROBE_MINMAX, 2488 }; 2489 2490 static const struct uvc_device_info uvc_quirk_fix_bandwidth = { 2491 .quirks = UVC_QUIRK_FIX_BANDWIDTH, 2492 }; 2493 2494 static const struct uvc_device_info uvc_quirk_probe_def = { 2495 .quirks = UVC_QUIRK_PROBE_DEF, 2496 }; 2497 2498 static const struct uvc_device_info uvc_quirk_stream_no_fid = { 2499 .quirks = UVC_QUIRK_STREAM_NO_FID, 2500 }; 2501 2502 static const struct uvc_device_info uvc_quirk_force_y8 = { 2503 .quirks = UVC_QUIRK_FORCE_Y8, 2504 }; 2505 2506 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q} 2507 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \ 2508 {.meta_format = m} 2509 2510 /* 2511 * The Logitech cameras listed below have their interface class set to 2512 * VENDOR_SPEC because they don't announce themselves as UVC devices, even 2513 * though they are compliant. 2514 * 2515 * Sort these by vendor/product ID. 2516 */ 2517 static const struct usb_device_id uvc_ids[] = { 2518 /* Quanta ACER HD User Facing */ 2519 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2520 | USB_DEVICE_ID_MATCH_INT_INFO, 2521 .idVendor = 0x0408, 2522 .idProduct = 0x4033, 2523 .bInterfaceClass = USB_CLASS_VIDEO, 2524 .bInterfaceSubClass = 1, 2525 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2526 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2527 .uvc_version = 0x010a, 2528 } }, 2529 /* Quanta ACER HD User Facing */ 2530 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2531 | USB_DEVICE_ID_MATCH_INT_INFO, 2532 .idVendor = 0x0408, 2533 .idProduct = 0x4035, 2534 .bInterfaceClass = USB_CLASS_VIDEO, 2535 .bInterfaceSubClass = 1, 2536 .bInterfaceProtocol = UVC_PC_PROTOCOL_15, 2537 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 2538 .uvc_version = 0x010a, 2539 } }, 2540 /* LogiLink Wireless Webcam */ 2541 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2542 | USB_DEVICE_ID_MATCH_INT_INFO, 2543 .idVendor = 0x0416, 2544 .idProduct = 0xa91a, 2545 .bInterfaceClass = USB_CLASS_VIDEO, 2546 .bInterfaceSubClass = 1, 2547 .bInterfaceProtocol = 0, 2548 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2549 /* Genius eFace 2025 */ 2550 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2551 | USB_DEVICE_ID_MATCH_INT_INFO, 2552 .idVendor = 0x0458, 2553 .idProduct = 0x706e, 2554 .bInterfaceClass = USB_CLASS_VIDEO, 2555 .bInterfaceSubClass = 1, 2556 .bInterfaceProtocol = 0, 2557 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2558 /* Microsoft Lifecam NX-6000 */ 2559 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2560 | USB_DEVICE_ID_MATCH_INT_INFO, 2561 .idVendor = 0x045e, 2562 .idProduct = 0x00f8, 2563 .bInterfaceClass = USB_CLASS_VIDEO, 2564 .bInterfaceSubClass = 1, 2565 .bInterfaceProtocol = 0, 2566 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2567 /* Microsoft Lifecam NX-3000 */ 2568 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2569 | USB_DEVICE_ID_MATCH_INT_INFO, 2570 .idVendor = 0x045e, 2571 .idProduct = 0x0721, 2572 .bInterfaceClass = USB_CLASS_VIDEO, 2573 .bInterfaceSubClass = 1, 2574 .bInterfaceProtocol = 0, 2575 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2576 /* Microsoft Lifecam VX-7000 */ 2577 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2578 | USB_DEVICE_ID_MATCH_INT_INFO, 2579 .idVendor = 0x045e, 2580 .idProduct = 0x0723, 2581 .bInterfaceClass = USB_CLASS_VIDEO, 2582 .bInterfaceSubClass = 1, 2583 .bInterfaceProtocol = 0, 2584 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2585 /* Logitech, Webcam C910 */ 2586 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2587 | USB_DEVICE_ID_MATCH_INT_INFO, 2588 .idVendor = 0x046d, 2589 .idProduct = 0x0821, 2590 .bInterfaceClass = USB_CLASS_VIDEO, 2591 .bInterfaceSubClass = 1, 2592 .bInterfaceProtocol = 0, 2593 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2594 /* Logitech, Webcam B910 */ 2595 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2596 | USB_DEVICE_ID_MATCH_INT_INFO, 2597 .idVendor = 0x046d, 2598 .idProduct = 0x0823, 2599 .bInterfaceClass = USB_CLASS_VIDEO, 2600 .bInterfaceSubClass = 1, 2601 .bInterfaceProtocol = 0, 2602 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, 2603 /* Logitech Quickcam Fusion */ 2604 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2605 | USB_DEVICE_ID_MATCH_INT_INFO, 2606 .idVendor = 0x046d, 2607 .idProduct = 0x08c1, 2608 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2609 .bInterfaceSubClass = 1, 2610 .bInterfaceProtocol = 0 }, 2611 /* Logitech Quickcam Orbit MP */ 2612 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2613 | USB_DEVICE_ID_MATCH_INT_INFO, 2614 .idVendor = 0x046d, 2615 .idProduct = 0x08c2, 2616 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2617 .bInterfaceSubClass = 1, 2618 .bInterfaceProtocol = 0 }, 2619 /* Logitech Quickcam Pro for Notebook */ 2620 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2621 | USB_DEVICE_ID_MATCH_INT_INFO, 2622 .idVendor = 0x046d, 2623 .idProduct = 0x08c3, 2624 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2625 .bInterfaceSubClass = 1, 2626 .bInterfaceProtocol = 0 }, 2627 /* Logitech Quickcam Pro 5000 */ 2628 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2629 | USB_DEVICE_ID_MATCH_INT_INFO, 2630 .idVendor = 0x046d, 2631 .idProduct = 0x08c5, 2632 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2633 .bInterfaceSubClass = 1, 2634 .bInterfaceProtocol = 0 }, 2635 /* Logitech Quickcam OEM Dell Notebook */ 2636 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2637 | USB_DEVICE_ID_MATCH_INT_INFO, 2638 .idVendor = 0x046d, 2639 .idProduct = 0x08c6, 2640 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2641 .bInterfaceSubClass = 1, 2642 .bInterfaceProtocol = 0 }, 2643 /* Logitech Quickcam OEM Cisco VT Camera II */ 2644 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2645 | USB_DEVICE_ID_MATCH_INT_INFO, 2646 .idVendor = 0x046d, 2647 .idProduct = 0x08c7, 2648 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2649 .bInterfaceSubClass = 1, 2650 .bInterfaceProtocol = 0 }, 2651 /* Logitech HD Pro Webcam C920 */ 2652 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2653 | USB_DEVICE_ID_MATCH_INT_INFO, 2654 .idVendor = 0x046d, 2655 .idProduct = 0x082d, 2656 .bInterfaceClass = USB_CLASS_VIDEO, 2657 .bInterfaceSubClass = 1, 2658 .bInterfaceProtocol = 0, 2659 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT 2660 | UVC_QUIRK_INVALID_DEVICE_SOF) }, 2661 /* Logitech HD Pro Webcam C922 */ 2662 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2663 | USB_DEVICE_ID_MATCH_INT_INFO, 2664 .idVendor = 0x046d, 2665 .idProduct = 0x085c, 2666 .bInterfaceClass = USB_CLASS_VIDEO, 2667 .bInterfaceSubClass = 1, 2668 .bInterfaceProtocol = 0, 2669 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_INVALID_DEVICE_SOF) }, 2670 /* Logitech Rally Bar Huddle */ 2671 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2672 | USB_DEVICE_ID_MATCH_INT_INFO, 2673 .idVendor = 0x046d, 2674 .idProduct = 0x087c, 2675 .bInterfaceClass = USB_CLASS_VIDEO, 2676 .bInterfaceSubClass = 1, 2677 .bInterfaceProtocol = 0, 2678 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2679 /* Logitech Rally Bar */ 2680 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2681 | USB_DEVICE_ID_MATCH_INT_INFO, 2682 .idVendor = 0x046d, 2683 .idProduct = 0x089b, 2684 .bInterfaceClass = USB_CLASS_VIDEO, 2685 .bInterfaceSubClass = 1, 2686 .bInterfaceProtocol = 0, 2687 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2688 /* Logitech Rally Bar Mini */ 2689 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2690 | USB_DEVICE_ID_MATCH_INT_INFO, 2691 .idVendor = 0x046d, 2692 .idProduct = 0x08d3, 2693 .bInterfaceClass = USB_CLASS_VIDEO, 2694 .bInterfaceSubClass = 1, 2695 .bInterfaceProtocol = 0, 2696 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) }, 2697 /* Chicony CNF7129 (Asus EEE 100HE) */ 2698 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2699 | USB_DEVICE_ID_MATCH_INT_INFO, 2700 .idVendor = 0x04f2, 2701 .idProduct = 0xb071, 2702 .bInterfaceClass = USB_CLASS_VIDEO, 2703 .bInterfaceSubClass = 1, 2704 .bInterfaceProtocol = 0, 2705 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) }, 2706 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2707 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2708 | USB_DEVICE_ID_MATCH_INT_INFO, 2709 .idVendor = 0x058f, 2710 .idProduct = 0x3820, 2711 .bInterfaceClass = USB_CLASS_VIDEO, 2712 .bInterfaceSubClass = 1, 2713 .bInterfaceProtocol = 0, 2714 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2715 /* Dell XPS m1530 */ 2716 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2717 | USB_DEVICE_ID_MATCH_INT_INFO, 2718 .idVendor = 0x05a9, 2719 .idProduct = 0x2640, 2720 .bInterfaceClass = USB_CLASS_VIDEO, 2721 .bInterfaceSubClass = 1, 2722 .bInterfaceProtocol = 0, 2723 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2724 /* Dell SP2008WFP Monitor */ 2725 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2726 | USB_DEVICE_ID_MATCH_INT_INFO, 2727 .idVendor = 0x05a9, 2728 .idProduct = 0x2641, 2729 .bInterfaceClass = USB_CLASS_VIDEO, 2730 .bInterfaceSubClass = 1, 2731 .bInterfaceProtocol = 0, 2732 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2733 /* Dell Alienware X51 */ 2734 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2735 | USB_DEVICE_ID_MATCH_INT_INFO, 2736 .idVendor = 0x05a9, 2737 .idProduct = 0x2643, 2738 .bInterfaceClass = USB_CLASS_VIDEO, 2739 .bInterfaceSubClass = 1, 2740 .bInterfaceProtocol = 0, 2741 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2742 /* Dell Studio Hybrid 140g (OmniVision webcam) */ 2743 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2744 | USB_DEVICE_ID_MATCH_INT_INFO, 2745 .idVendor = 0x05a9, 2746 .idProduct = 0x264a, 2747 .bInterfaceClass = USB_CLASS_VIDEO, 2748 .bInterfaceSubClass = 1, 2749 .bInterfaceProtocol = 0, 2750 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2751 /* Dell XPS M1330 (OmniVision OV7670 webcam) */ 2752 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2753 | USB_DEVICE_ID_MATCH_INT_INFO, 2754 .idVendor = 0x05a9, 2755 .idProduct = 0x7670, 2756 .bInterfaceClass = USB_CLASS_VIDEO, 2757 .bInterfaceSubClass = 1, 2758 .bInterfaceProtocol = 0, 2759 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2760 /* Apple Built-In iSight */ 2761 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2762 | USB_DEVICE_ID_MATCH_INT_INFO, 2763 .idVendor = 0x05ac, 2764 .idProduct = 0x8501, 2765 .bInterfaceClass = USB_CLASS_VIDEO, 2766 .bInterfaceSubClass = 1, 2767 .bInterfaceProtocol = 0, 2768 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2769 | UVC_QUIRK_BUILTIN_ISIGHT) }, 2770 /* Apple FaceTime HD Camera (Built-In) */ 2771 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2772 | USB_DEVICE_ID_MATCH_INT_INFO, 2773 .idVendor = 0x05ac, 2774 .idProduct = 0x8514, 2775 .bInterfaceClass = USB_CLASS_VIDEO, 2776 .bInterfaceSubClass = 1, 2777 .bInterfaceProtocol = 0, 2778 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2779 /* Apple Built-In iSight via iBridge */ 2780 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2781 | USB_DEVICE_ID_MATCH_INT_INFO, 2782 .idVendor = 0x05ac, 2783 .idProduct = 0x8600, 2784 .bInterfaceClass = USB_CLASS_VIDEO, 2785 .bInterfaceSubClass = 1, 2786 .bInterfaceProtocol = 0, 2787 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2788 /* Foxlink ("HP Webcam" on HP Mini 5103) */ 2789 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2790 | USB_DEVICE_ID_MATCH_INT_INFO, 2791 .idVendor = 0x05c8, 2792 .idProduct = 0x0403, 2793 .bInterfaceClass = USB_CLASS_VIDEO, 2794 .bInterfaceSubClass = 1, 2795 .bInterfaceProtocol = 0, 2796 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2797 /* Genesys Logic USB 2.0 PC Camera */ 2798 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2799 | USB_DEVICE_ID_MATCH_INT_INFO, 2800 .idVendor = 0x05e3, 2801 .idProduct = 0x0505, 2802 .bInterfaceClass = USB_CLASS_VIDEO, 2803 .bInterfaceSubClass = 1, 2804 .bInterfaceProtocol = 0, 2805 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2806 /* Hercules Classic Silver */ 2807 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2808 | USB_DEVICE_ID_MATCH_INT_INFO, 2809 .idVendor = 0x06f8, 2810 .idProduct = 0x300c, 2811 .bInterfaceClass = USB_CLASS_VIDEO, 2812 .bInterfaceSubClass = 1, 2813 .bInterfaceProtocol = 0, 2814 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2815 /* ViMicro Vega */ 2816 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2817 | USB_DEVICE_ID_MATCH_INT_INFO, 2818 .idVendor = 0x0ac8, 2819 .idProduct = 0x332d, 2820 .bInterfaceClass = USB_CLASS_VIDEO, 2821 .bInterfaceSubClass = 1, 2822 .bInterfaceProtocol = 0, 2823 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2824 /* ViMicro - Minoru3D */ 2825 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2826 | USB_DEVICE_ID_MATCH_INT_INFO, 2827 .idVendor = 0x0ac8, 2828 .idProduct = 0x3410, 2829 .bInterfaceClass = USB_CLASS_VIDEO, 2830 .bInterfaceSubClass = 1, 2831 .bInterfaceProtocol = 0, 2832 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2833 /* ViMicro Venus - Minoru3D */ 2834 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2835 | USB_DEVICE_ID_MATCH_INT_INFO, 2836 .idVendor = 0x0ac8, 2837 .idProduct = 0x3420, 2838 .bInterfaceClass = USB_CLASS_VIDEO, 2839 .bInterfaceSubClass = 1, 2840 .bInterfaceProtocol = 0, 2841 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2842 /* Ophir Optronics - SPCAM 620U */ 2843 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2844 | USB_DEVICE_ID_MATCH_INT_INFO, 2845 .idVendor = 0x0bd3, 2846 .idProduct = 0x0555, 2847 .bInterfaceClass = USB_CLASS_VIDEO, 2848 .bInterfaceSubClass = 1, 2849 .bInterfaceProtocol = 0, 2850 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2851 /* Sonix Technology Co. Ltd. - 292A IPC AR0330 */ 2852 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2853 | USB_DEVICE_ID_MATCH_INT_INFO, 2854 .idVendor = 0x0c45, 2855 .idProduct = 0x6366, 2856 .bInterfaceClass = USB_CLASS_VIDEO, 2857 .bInterfaceSubClass = 1, 2858 .bInterfaceProtocol = 0, 2859 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) }, 2860 /* MT6227 */ 2861 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2862 | USB_DEVICE_ID_MATCH_INT_INFO, 2863 .idVendor = 0x0e8d, 2864 .idProduct = 0x0004, 2865 .bInterfaceClass = USB_CLASS_VIDEO, 2866 .bInterfaceSubClass = 1, 2867 .bInterfaceProtocol = 0, 2868 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2869 | UVC_QUIRK_PROBE_DEF) }, 2870 /* IMC Networks (Medion Akoya) */ 2871 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2872 | USB_DEVICE_ID_MATCH_INT_INFO, 2873 .idVendor = 0x13d3, 2874 .idProduct = 0x5103, 2875 .bInterfaceClass = USB_CLASS_VIDEO, 2876 .bInterfaceSubClass = 1, 2877 .bInterfaceProtocol = 0, 2878 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2879 /* JMicron USB2.0 XGA WebCam */ 2880 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2881 | USB_DEVICE_ID_MATCH_INT_INFO, 2882 .idVendor = 0x152d, 2883 .idProduct = 0x0310, 2884 .bInterfaceClass = USB_CLASS_VIDEO, 2885 .bInterfaceSubClass = 1, 2886 .bInterfaceProtocol = 0, 2887 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2888 /* Kurokesu C1 PRO */ 2889 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2890 | USB_DEVICE_ID_MATCH_INT_INFO, 2891 .idVendor = 0x16d0, 2892 .idProduct = 0x0ed1, 2893 .bInterfaceClass = USB_CLASS_VIDEO, 2894 .bInterfaceSubClass = 1, 2895 .bInterfaceProtocol = 0, 2896 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) }, 2897 /* Syntek (HP Spartan) */ 2898 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2899 | USB_DEVICE_ID_MATCH_INT_INFO, 2900 .idVendor = 0x174f, 2901 .idProduct = 0x5212, 2902 .bInterfaceClass = USB_CLASS_VIDEO, 2903 .bInterfaceSubClass = 1, 2904 .bInterfaceProtocol = 0, 2905 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2906 /* Syntek (Samsung Q310) */ 2907 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2908 | USB_DEVICE_ID_MATCH_INT_INFO, 2909 .idVendor = 0x174f, 2910 .idProduct = 0x5931, 2911 .bInterfaceClass = USB_CLASS_VIDEO, 2912 .bInterfaceSubClass = 1, 2913 .bInterfaceProtocol = 0, 2914 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2915 /* Syntek (Packard Bell EasyNote MX52 */ 2916 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2917 | USB_DEVICE_ID_MATCH_INT_INFO, 2918 .idVendor = 0x174f, 2919 .idProduct = 0x8a12, 2920 .bInterfaceClass = USB_CLASS_VIDEO, 2921 .bInterfaceSubClass = 1, 2922 .bInterfaceProtocol = 0, 2923 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2924 /* Syntek (Asus F9SG) */ 2925 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2926 | USB_DEVICE_ID_MATCH_INT_INFO, 2927 .idVendor = 0x174f, 2928 .idProduct = 0x8a31, 2929 .bInterfaceClass = USB_CLASS_VIDEO, 2930 .bInterfaceSubClass = 1, 2931 .bInterfaceProtocol = 0, 2932 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2933 /* Syntek (Asus U3S) */ 2934 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2935 | USB_DEVICE_ID_MATCH_INT_INFO, 2936 .idVendor = 0x174f, 2937 .idProduct = 0x8a33, 2938 .bInterfaceClass = USB_CLASS_VIDEO, 2939 .bInterfaceSubClass = 1, 2940 .bInterfaceProtocol = 0, 2941 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2942 /* Syntek (JAOtech Smart Terminal) */ 2943 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2944 | USB_DEVICE_ID_MATCH_INT_INFO, 2945 .idVendor = 0x174f, 2946 .idProduct = 0x8a34, 2947 .bInterfaceClass = USB_CLASS_VIDEO, 2948 .bInterfaceSubClass = 1, 2949 .bInterfaceProtocol = 0, 2950 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2951 /* Miricle 307K */ 2952 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2953 | USB_DEVICE_ID_MATCH_INT_INFO, 2954 .idVendor = 0x17dc, 2955 .idProduct = 0x0202, 2956 .bInterfaceClass = USB_CLASS_VIDEO, 2957 .bInterfaceSubClass = 1, 2958 .bInterfaceProtocol = 0, 2959 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2960 /* Lenovo Thinkpad SL400/SL500 */ 2961 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2962 | USB_DEVICE_ID_MATCH_INT_INFO, 2963 .idVendor = 0x17ef, 2964 .idProduct = 0x480b, 2965 .bInterfaceClass = USB_CLASS_VIDEO, 2966 .bInterfaceSubClass = 1, 2967 .bInterfaceProtocol = 0, 2968 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2969 /* Aveo Technology USB 2.0 Camera */ 2970 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2971 | USB_DEVICE_ID_MATCH_INT_INFO, 2972 .idVendor = 0x1871, 2973 .idProduct = 0x0306, 2974 .bInterfaceClass = USB_CLASS_VIDEO, 2975 .bInterfaceSubClass = 1, 2976 .bInterfaceProtocol = 0, 2977 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2978 | UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2979 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ 2980 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2981 | USB_DEVICE_ID_MATCH_INT_INFO, 2982 .idVendor = 0x1871, 2983 .idProduct = 0x0516, 2984 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2985 .bInterfaceSubClass = 1, 2986 .bInterfaceProtocol = 0 }, 2987 /* Ecamm Pico iMage */ 2988 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2989 | USB_DEVICE_ID_MATCH_INT_INFO, 2990 .idVendor = 0x18cd, 2991 .idProduct = 0xcafe, 2992 .bInterfaceClass = USB_CLASS_VIDEO, 2993 .bInterfaceSubClass = 1, 2994 .bInterfaceProtocol = 0, 2995 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2996 /* Manta MM-353 Plako */ 2997 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2998 | USB_DEVICE_ID_MATCH_INT_INFO, 2999 .idVendor = 0x18ec, 3000 .idProduct = 0x3188, 3001 .bInterfaceClass = USB_CLASS_VIDEO, 3002 .bInterfaceSubClass = 1, 3003 .bInterfaceProtocol = 0, 3004 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3005 /* FSC WebCam V30S */ 3006 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3007 | USB_DEVICE_ID_MATCH_INT_INFO, 3008 .idVendor = 0x18ec, 3009 .idProduct = 0x3288, 3010 .bInterfaceClass = USB_CLASS_VIDEO, 3011 .bInterfaceSubClass = 1, 3012 .bInterfaceProtocol = 0, 3013 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3014 /* Arkmicro unbranded */ 3015 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3016 | USB_DEVICE_ID_MATCH_INT_INFO, 3017 .idVendor = 0x18ec, 3018 .idProduct = 0x3290, 3019 .bInterfaceClass = USB_CLASS_VIDEO, 3020 .bInterfaceSubClass = 1, 3021 .bInterfaceProtocol = 0, 3022 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 3023 /* The Imaging Source USB CCD cameras */ 3024 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3025 | USB_DEVICE_ID_MATCH_INT_INFO, 3026 .idVendor = 0x199e, 3027 .idProduct = 0x8102, 3028 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3029 .bInterfaceSubClass = 1, 3030 .bInterfaceProtocol = 0 }, 3031 /* Bodelin ProScopeHR */ 3032 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3033 | USB_DEVICE_ID_MATCH_DEV_HI 3034 | USB_DEVICE_ID_MATCH_INT_INFO, 3035 .idVendor = 0x19ab, 3036 .idProduct = 0x1000, 3037 .bcdDevice_hi = 0x0126, 3038 .bInterfaceClass = USB_CLASS_VIDEO, 3039 .bInterfaceSubClass = 1, 3040 .bInterfaceProtocol = 0, 3041 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) }, 3042 /* MSI StarCam 370i */ 3043 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3044 | USB_DEVICE_ID_MATCH_INT_INFO, 3045 .idVendor = 0x1b3b, 3046 .idProduct = 0x2951, 3047 .bInterfaceClass = USB_CLASS_VIDEO, 3048 .bInterfaceSubClass = 1, 3049 .bInterfaceProtocol = 0, 3050 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3051 /* Generalplus Technology Inc. 808 Camera */ 3052 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3053 | USB_DEVICE_ID_MATCH_INT_INFO, 3054 .idVendor = 0x1b3f, 3055 .idProduct = 0x2002, 3056 .bInterfaceClass = USB_CLASS_VIDEO, 3057 .bInterfaceSubClass = 1, 3058 .bInterfaceProtocol = 0, 3059 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3060 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */ 3061 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3062 | USB_DEVICE_ID_MATCH_INT_INFO, 3063 .idVendor = 0x1bcf, 3064 .idProduct = 0x0b40, 3065 .bInterfaceClass = USB_CLASS_VIDEO, 3066 .bInterfaceSubClass = 1, 3067 .bInterfaceProtocol = 0, 3068 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 3069 .uvc_version = 0x010a, 3070 } }, 3071 /* SiGma Micro USB Web Camera */ 3072 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3073 | USB_DEVICE_ID_MATCH_INT_INFO, 3074 .idVendor = 0x1c4f, 3075 .idProduct = 0x3000, 3076 .bInterfaceClass = USB_CLASS_VIDEO, 3077 .bInterfaceSubClass = 1, 3078 .bInterfaceProtocol = 0, 3079 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 3080 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) }, 3081 /* NXP Semiconductors IR VIDEO */ 3082 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3083 | USB_DEVICE_ID_MATCH_INT_INFO, 3084 .idVendor = 0x1fc9, 3085 .idProduct = 0x009b, 3086 .bInterfaceClass = USB_CLASS_VIDEO, 3087 .bInterfaceSubClass = 1, 3088 .bInterfaceProtocol = 0, 3089 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3090 /* Oculus VR Positional Tracker DK2 */ 3091 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3092 | USB_DEVICE_ID_MATCH_INT_INFO, 3093 .idVendor = 0x2833, 3094 .idProduct = 0x0201, 3095 .bInterfaceClass = USB_CLASS_VIDEO, 3096 .bInterfaceSubClass = 1, 3097 .bInterfaceProtocol = 0, 3098 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3099 /* Oculus VR Rift Sensor */ 3100 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3101 | USB_DEVICE_ID_MATCH_INT_INFO, 3102 .idVendor = 0x2833, 3103 .idProduct = 0x0211, 3104 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3105 .bInterfaceSubClass = 1, 3106 .bInterfaceProtocol = 0, 3107 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3108 /* GEO Semiconductor GC6500 */ 3109 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3110 | USB_DEVICE_ID_MATCH_INT_INFO, 3111 .idVendor = 0x29fe, 3112 .idProduct = 0x4d53, 3113 .bInterfaceClass = USB_CLASS_VIDEO, 3114 .bInterfaceSubClass = 1, 3115 .bInterfaceProtocol = 0, 3116 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) }, 3117 /* Insta360 Link */ 3118 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3119 | USB_DEVICE_ID_MATCH_INT_INFO, 3120 .idVendor = 0x2e1a, 3121 .idProduct = 0x4c01, 3122 .bInterfaceClass = USB_CLASS_VIDEO, 3123 .bInterfaceSubClass = 1, 3124 .bInterfaceProtocol = 0, 3125 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) }, 3126 /* Intel D410/ASR depth camera */ 3127 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3128 | USB_DEVICE_ID_MATCH_INT_INFO, 3129 .idVendor = 0x8086, 3130 .idProduct = 0x0ad2, 3131 .bInterfaceClass = USB_CLASS_VIDEO, 3132 .bInterfaceSubClass = 1, 3133 .bInterfaceProtocol = 0, 3134 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3135 /* Intel D415/ASRC depth camera */ 3136 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3137 | USB_DEVICE_ID_MATCH_INT_INFO, 3138 .idVendor = 0x8086, 3139 .idProduct = 0x0ad3, 3140 .bInterfaceClass = USB_CLASS_VIDEO, 3141 .bInterfaceSubClass = 1, 3142 .bInterfaceProtocol = 0, 3143 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3144 /* Intel D430/AWG depth camera */ 3145 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3146 | USB_DEVICE_ID_MATCH_INT_INFO, 3147 .idVendor = 0x8086, 3148 .idProduct = 0x0ad4, 3149 .bInterfaceClass = USB_CLASS_VIDEO, 3150 .bInterfaceSubClass = 1, 3151 .bInterfaceProtocol = 0, 3152 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3153 /* Intel RealSense D4M */ 3154 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3155 | USB_DEVICE_ID_MATCH_INT_INFO, 3156 .idVendor = 0x8086, 3157 .idProduct = 0x0b03, 3158 .bInterfaceClass = USB_CLASS_VIDEO, 3159 .bInterfaceSubClass = 1, 3160 .bInterfaceProtocol = 0, 3161 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3162 /* Intel D435/AWGC depth camera */ 3163 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3164 | USB_DEVICE_ID_MATCH_INT_INFO, 3165 .idVendor = 0x8086, 3166 .idProduct = 0x0b07, 3167 .bInterfaceClass = USB_CLASS_VIDEO, 3168 .bInterfaceSubClass = 1, 3169 .bInterfaceProtocol = 0, 3170 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3171 /* Intel D435i depth camera */ 3172 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3173 | USB_DEVICE_ID_MATCH_INT_INFO, 3174 .idVendor = 0x8086, 3175 .idProduct = 0x0b3a, 3176 .bInterfaceClass = USB_CLASS_VIDEO, 3177 .bInterfaceSubClass = 1, 3178 .bInterfaceProtocol = 0, 3179 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3180 /* Intel D405 Depth Camera */ 3181 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3182 | USB_DEVICE_ID_MATCH_INT_INFO, 3183 .idVendor = 0x8086, 3184 .idProduct = 0x0b5b, 3185 .bInterfaceClass = USB_CLASS_VIDEO, 3186 .bInterfaceSubClass = 1, 3187 .bInterfaceProtocol = 0, 3188 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3189 /* Intel D455 Depth Camera */ 3190 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3191 | USB_DEVICE_ID_MATCH_INT_INFO, 3192 .idVendor = 0x8086, 3193 .idProduct = 0x0b5c, 3194 .bInterfaceClass = USB_CLASS_VIDEO, 3195 .bInterfaceSubClass = 1, 3196 .bInterfaceProtocol = 0, 3197 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3198 /* Intel D421 Depth Module */ 3199 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3200 | USB_DEVICE_ID_MATCH_INT_INFO, 3201 .idVendor = 0x8086, 3202 .idProduct = 0x1155, 3203 .bInterfaceClass = USB_CLASS_VIDEO, 3204 .bInterfaceSubClass = 1, 3205 .bInterfaceProtocol = 0, 3206 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3207 /* Generic USB Video Class */ 3208 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, 3209 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, 3210 {} 3211 }; 3212 3213 MODULE_DEVICE_TABLE(usb, uvc_ids); 3214 3215 struct uvc_driver uvc_driver = { 3216 .driver = { 3217 .name = "uvcvideo", 3218 .probe = uvc_probe, 3219 .disconnect = uvc_disconnect, 3220 .suspend = uvc_suspend, 3221 .resume = uvc_resume, 3222 .reset_resume = uvc_reset_resume, 3223 .id_table = uvc_ids, 3224 .supports_autosuspend = 1, 3225 }, 3226 }; 3227 3228 static int __init uvc_init(void) 3229 { 3230 int ret; 3231 3232 uvc_debugfs_init(); 3233 3234 ret = usb_register(&uvc_driver.driver); 3235 if (ret < 0) { 3236 uvc_debugfs_cleanup(); 3237 return ret; 3238 } 3239 3240 return 0; 3241 } 3242 3243 static void __exit uvc_cleanup(void) 3244 { 3245 usb_deregister(&uvc_driver.driver); 3246 uvc_debugfs_cleanup(); 3247 } 3248 3249 module_init(uvc_init); 3250 module_exit(uvc_cleanup); 3251 3252 MODULE_AUTHOR(DRIVER_AUTHOR); 3253 MODULE_DESCRIPTION(DRIVER_DESC); 3254 MODULE_LICENSE("GPL"); 3255 MODULE_VERSION(DRIVER_VERSION); 3256 3257