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