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