1/* 2 * uvc_driver.c -- USB Video Class driver 3 * 4 * Copyright (C) 2005-2010 5 * Laurent Pinchart (laurent.pinchart@ideasonboard.com) 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 */ 13 14#include <linux/atomic.h> 15#include <linux/kernel.h> 16#include <linux/list.h> 17#include <linux/module.h> 18#include <linux/slab.h> 19#include <linux/usb.h> 20#include <linux/videodev2.h> 21#include <linux/vmalloc.h> 22#include <linux/wait.h> 23#include <linux/version.h> 24#include <asm/unaligned.h> 25 26#include <media/v4l2-common.h> 27 28#include "uvcvideo.h" 29 30#define DRIVER_AUTHOR "Laurent Pinchart " \ 31 "<laurent.pinchart@ideasonboard.com>" 32#define DRIVER_DESC "USB Video Class driver" 33 34unsigned int uvc_clock_param = CLOCK_MONOTONIC; 35unsigned int uvc_hw_timestamps_param; 36unsigned int uvc_no_drop_param; 37static unsigned int uvc_quirks_param = -1; 38unsigned int uvc_trace_param; 39unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; 40 41/* ------------------------------------------------------------------------ 42 * Video formats 43 */ 44 45static struct uvc_format_desc uvc_fmts[] = { 46 { 47 .name = "YUV 4:2:2 (YUYV)", 48 .guid = UVC_GUID_FORMAT_YUY2, 49 .fcc = V4L2_PIX_FMT_YUYV, 50 }, 51 { 52 .name = "YUV 4:2:2 (YUYV)", 53 .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, 54 .fcc = V4L2_PIX_FMT_YUYV, 55 }, 56 { 57 .name = "YUV 4:2:0 (NV12)", 58 .guid = UVC_GUID_FORMAT_NV12, 59 .fcc = V4L2_PIX_FMT_NV12, 60 }, 61 { 62 .name = "MJPEG", 63 .guid = UVC_GUID_FORMAT_MJPEG, 64 .fcc = V4L2_PIX_FMT_MJPEG, 65 }, 66 { 67 .name = "YVU 4:2:0 (YV12)", 68 .guid = UVC_GUID_FORMAT_YV12, 69 .fcc = V4L2_PIX_FMT_YVU420, 70 }, 71 { 72 .name = "YUV 4:2:0 (I420)", 73 .guid = UVC_GUID_FORMAT_I420, 74 .fcc = V4L2_PIX_FMT_YUV420, 75 }, 76 { 77 .name = "YUV 4:2:0 (M420)", 78 .guid = UVC_GUID_FORMAT_M420, 79 .fcc = V4L2_PIX_FMT_M420, 80 }, 81 { 82 .name = "YUV 4:2:2 (UYVY)", 83 .guid = UVC_GUID_FORMAT_UYVY, 84 .fcc = V4L2_PIX_FMT_UYVY, 85 }, 86 { 87 .name = "Greyscale 8-bit (Y800)", 88 .guid = UVC_GUID_FORMAT_Y800, 89 .fcc = V4L2_PIX_FMT_GREY, 90 }, 91 { 92 .name = "Greyscale 8-bit (Y8 )", 93 .guid = UVC_GUID_FORMAT_Y8, 94 .fcc = V4L2_PIX_FMT_GREY, 95 }, 96 { 97 .name = "Greyscale 10-bit (Y10 )", 98 .guid = UVC_GUID_FORMAT_Y10, 99 .fcc = V4L2_PIX_FMT_Y10, 100 }, 101 { 102 .name = "Greyscale 12-bit (Y12 )", 103 .guid = UVC_GUID_FORMAT_Y12, 104 .fcc = V4L2_PIX_FMT_Y12, 105 }, 106 { 107 .name = "Greyscale 16-bit (Y16 )", 108 .guid = UVC_GUID_FORMAT_Y16, 109 .fcc = V4L2_PIX_FMT_Y16, 110 }, 111 { 112 .name = "BGGR Bayer (BY8 )", 113 .guid = UVC_GUID_FORMAT_BY8, 114 .fcc = V4L2_PIX_FMT_SBGGR8, 115 }, 116 { 117 .name = "BGGR Bayer (BA81)", 118 .guid = UVC_GUID_FORMAT_BA81, 119 .fcc = V4L2_PIX_FMT_SBGGR8, 120 }, 121 { 122 .name = "GBRG Bayer (GBRG)", 123 .guid = UVC_GUID_FORMAT_GBRG, 124 .fcc = V4L2_PIX_FMT_SGBRG8, 125 }, 126 { 127 .name = "GRBG Bayer (GRBG)", 128 .guid = UVC_GUID_FORMAT_GRBG, 129 .fcc = V4L2_PIX_FMT_SGRBG8, 130 }, 131 { 132 .name = "RGGB Bayer (RGGB)", 133 .guid = UVC_GUID_FORMAT_RGGB, 134 .fcc = V4L2_PIX_FMT_SRGGB8, 135 }, 136 { 137 .name = "RGB565", 138 .guid = UVC_GUID_FORMAT_RGBP, 139 .fcc = V4L2_PIX_FMT_RGB565, 140 }, 141 { 142 .name = "BGR 8:8:8 (BGR3)", 143 .guid = UVC_GUID_FORMAT_BGR3, 144 .fcc = V4L2_PIX_FMT_BGR24, 145 }, 146 { 147 .name = "H.264", 148 .guid = UVC_GUID_FORMAT_H264, 149 .fcc = V4L2_PIX_FMT_H264, 150 }, 151}; 152 153/* ------------------------------------------------------------------------ 154 * Utility functions 155 */ 156 157struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 158 __u8 epaddr) 159{ 160 struct usb_host_endpoint *ep; 161 unsigned int i; 162 163 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 164 ep = &alts->endpoint[i]; 165 if (ep->desc.bEndpointAddress == epaddr) 166 return ep; 167 } 168 169 return NULL; 170} 171 172static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) 173{ 174 unsigned int len = ARRAY_SIZE(uvc_fmts); 175 unsigned int i; 176 177 for (i = 0; i < len; ++i) { 178 if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) 179 return &uvc_fmts[i]; 180 } 181 182 return NULL; 183} 184 185static __u32 uvc_colorspace(const __u8 primaries) 186{ 187 static const __u8 colorprimaries[] = { 188 0, 189 V4L2_COLORSPACE_SRGB, 190 V4L2_COLORSPACE_470_SYSTEM_M, 191 V4L2_COLORSPACE_470_SYSTEM_BG, 192 V4L2_COLORSPACE_SMPTE170M, 193 V4L2_COLORSPACE_SMPTE240M, 194 }; 195 196 if (primaries < ARRAY_SIZE(colorprimaries)) 197 return colorprimaries[primaries]; 198 199 return 0; 200} 201 202/* Simplify a fraction using a simple continued fraction decomposition. The 203 * idea here is to convert fractions such as 333333/10000000 to 1/30 using 204 * 32 bit arithmetic only. The algorithm is not perfect and relies upon two 205 * arbitrary parameters to remove non-significative terms from the simple 206 * continued fraction decomposition. Using 8 and 333 for n_terms and threshold 207 * respectively seems to give nice results. 208 */ 209void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, 210 unsigned int n_terms, unsigned int threshold) 211{ 212 uint32_t *an; 213 uint32_t x, y, r; 214 unsigned int i, n; 215 216 an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); 217 if (an == NULL) 218 return; 219 220 /* Convert the fraction to a simple continued fraction. See 221 * http://mathforum.org/dr.math/faq/faq.fractions.html 222 * Stop if the current term is bigger than or equal to the given 223 * threshold. 224 */ 225 x = *numerator; 226 y = *denominator; 227 228 for (n = 0; n < n_terms && y != 0; ++n) { 229 an[n] = x / y; 230 if (an[n] >= threshold) { 231 if (n < 2) 232 n++; 233 break; 234 } 235 236 r = x - an[n] * y; 237 x = y; 238 y = r; 239 } 240 241 /* Expand the simple continued fraction back to an integer fraction. */ 242 x = 0; 243 y = 1; 244 245 for (i = n; i > 0; --i) { 246 r = y; 247 y = an[i-1] * y + x; 248 x = r; 249 } 250 251 *numerator = y; 252 *denominator = x; 253 kfree(an); 254} 255 256/* Convert a fraction to a frame interval in 100ns multiples. The idea here is 257 * to compute numerator / denominator * 10000000 using 32 bit fixed point 258 * arithmetic only. 259 */ 260uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) 261{ 262 uint32_t multiplier; 263 264 /* Saturate the result if the operation would overflow. */ 265 if (denominator == 0 || 266 numerator/denominator >= ((uint32_t)-1)/10000000) 267 return (uint32_t)-1; 268 269 /* Divide both the denominator and the multiplier by two until 270 * numerator * multiplier doesn't overflow. If anyone knows a better 271 * algorithm please let me know. 272 */ 273 multiplier = 10000000; 274 while (numerator > ((uint32_t)-1)/multiplier) { 275 multiplier /= 2; 276 denominator /= 2; 277 } 278 279 return denominator ? numerator * multiplier / denominator : 0; 280} 281 282/* ------------------------------------------------------------------------ 283 * Terminal and unit management 284 */ 285 286struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 287{ 288 struct uvc_entity *entity; 289 290 list_for_each_entry(entity, &dev->entities, list) { 291 if (entity->id == id) 292 return entity; 293 } 294 295 return NULL; 296} 297 298static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 299 int id, struct uvc_entity *entity) 300{ 301 unsigned int i; 302 303 if (entity == NULL) 304 entity = list_entry(&dev->entities, struct uvc_entity, list); 305 306 list_for_each_entry_continue(entity, &dev->entities, list) { 307 for (i = 0; i < entity->bNrInPins; ++i) 308 if (entity->baSourceID[i] == id) 309 return entity; 310 } 311 312 return NULL; 313} 314 315static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) 316{ 317 struct uvc_streaming *stream; 318 319 list_for_each_entry(stream, &dev->streams, list) { 320 if (stream->header.bTerminalLink == id) 321 return stream; 322 } 323 324 return NULL; 325} 326 327/* ------------------------------------------------------------------------ 328 * Descriptors parsing 329 */ 330 331static int uvc_parse_format(struct uvc_device *dev, 332 struct uvc_streaming *streaming, struct uvc_format *format, 333 __u32 **intervals, unsigned char *buffer, int buflen) 334{ 335 struct usb_interface *intf = streaming->intf; 336 struct usb_host_interface *alts = intf->cur_altsetting; 337 struct uvc_format_desc *fmtdesc; 338 struct uvc_frame *frame; 339 const unsigned char *start = buffer; 340 unsigned int width_multiplier = 1; 341 unsigned int interval; 342 unsigned int i, n; 343 __u8 ftype; 344 345 format->type = buffer[2]; 346 format->index = buffer[3]; 347 348 switch (buffer[2]) { 349 case UVC_VS_FORMAT_UNCOMPRESSED: 350 case UVC_VS_FORMAT_FRAME_BASED: 351 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 352 if (buflen < n) { 353 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 354 "interface %d FORMAT error\n", 355 dev->udev->devnum, 356 alts->desc.bInterfaceNumber); 357 return -EINVAL; 358 } 359 360 /* Find the format descriptor from its GUID. */ 361 fmtdesc = uvc_format_by_guid(&buffer[5]); 362 363 if (fmtdesc != NULL) { 364 strlcpy(format->name, fmtdesc->name, 365 sizeof format->name); 366 format->fcc = fmtdesc->fcc; 367 } else { 368 uvc_printk(KERN_INFO, "Unknown video format %pUl\n", 369 &buffer[5]); 370 snprintf(format->name, sizeof(format->name), "%pUl\n", 371 &buffer[5]); 372 format->fcc = 0; 373 } 374 375 format->bpp = buffer[21]; 376 377 /* Some devices report a format that doesn't match what they 378 * really send. 379 */ 380 if (dev->quirks & UVC_QUIRK_FORCE_Y8) { 381 if (format->fcc == V4L2_PIX_FMT_YUYV) { 382 strlcpy(format->name, "Greyscale 8-bit (Y8 )", 383 sizeof(format->name)); 384 format->fcc = V4L2_PIX_FMT_GREY; 385 format->bpp = 8; 386 width_multiplier = 2; 387 } 388 } 389 390 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 391 ftype = UVC_VS_FRAME_UNCOMPRESSED; 392 } else { 393 ftype = UVC_VS_FRAME_FRAME_BASED; 394 if (buffer[27]) 395 format->flags = UVC_FMT_FLAG_COMPRESSED; 396 } 397 break; 398 399 case UVC_VS_FORMAT_MJPEG: 400 if (buflen < 11) { 401 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 402 "interface %d FORMAT error\n", 403 dev->udev->devnum, 404 alts->desc.bInterfaceNumber); 405 return -EINVAL; 406 } 407 408 strlcpy(format->name, "MJPEG", sizeof format->name); 409 format->fcc = V4L2_PIX_FMT_MJPEG; 410 format->flags = UVC_FMT_FLAG_COMPRESSED; 411 format->bpp = 0; 412 ftype = UVC_VS_FRAME_MJPEG; 413 break; 414 415 case UVC_VS_FORMAT_DV: 416 if (buflen < 9) { 417 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 418 "interface %d FORMAT error\n", 419 dev->udev->devnum, 420 alts->desc.bInterfaceNumber); 421 return -EINVAL; 422 } 423 424 switch (buffer[8] & 0x7f) { 425 case 0: 426 strlcpy(format->name, "SD-DV", sizeof format->name); 427 break; 428 case 1: 429 strlcpy(format->name, "SDL-DV", sizeof format->name); 430 break; 431 case 2: 432 strlcpy(format->name, "HD-DV", sizeof format->name); 433 break; 434 default: 435 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 436 "interface %d: unknown DV format %u\n", 437 dev->udev->devnum, 438 alts->desc.bInterfaceNumber, buffer[8]); 439 return -EINVAL; 440 } 441 442 strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", 443 sizeof format->name); 444 445 format->fcc = V4L2_PIX_FMT_DV; 446 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 447 format->bpp = 0; 448 ftype = 0; 449 450 /* Create a dummy frame descriptor. */ 451 frame = &format->frame[0]; 452 memset(&format->frame[0], 0, sizeof format->frame[0]); 453 frame->bFrameIntervalType = 1; 454 frame->dwDefaultFrameInterval = 1; 455 frame->dwFrameInterval = *intervals; 456 *(*intervals)++ = 1; 457 format->nframes = 1; 458 break; 459 460 case UVC_VS_FORMAT_MPEG2TS: 461 case UVC_VS_FORMAT_STREAM_BASED: 462 /* Not supported yet. */ 463 default: 464 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 465 "interface %d unsupported format %u\n", 466 dev->udev->devnum, alts->desc.bInterfaceNumber, 467 buffer[2]); 468 return -EINVAL; 469 } 470 471 uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); 472 473 buflen -= buffer[0]; 474 buffer += buffer[0]; 475 476 /* Parse the frame descriptors. Only uncompressed, MJPEG and frame 477 * based formats have frame descriptors. 478 */ 479 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 480 buffer[2] == ftype) { 481 frame = &format->frame[format->nframes]; 482 if (ftype != UVC_VS_FRAME_FRAME_BASED) 483 n = buflen > 25 ? buffer[25] : 0; 484 else 485 n = buflen > 21 ? buffer[21] : 0; 486 487 n = n ? n : 3; 488 489 if (buflen < 26 + 4*n) { 490 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 491 "interface %d FRAME error\n", dev->udev->devnum, 492 alts->desc.bInterfaceNumber); 493 return -EINVAL; 494 } 495 496 frame->bFrameIndex = buffer[3]; 497 frame->bmCapabilities = buffer[4]; 498 frame->wWidth = get_unaligned_le16(&buffer[5]) 499 * width_multiplier; 500 frame->wHeight = get_unaligned_le16(&buffer[7]); 501 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 502 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 503 if (ftype != UVC_VS_FRAME_FRAME_BASED) { 504 frame->dwMaxVideoFrameBufferSize = 505 get_unaligned_le32(&buffer[17]); 506 frame->dwDefaultFrameInterval = 507 get_unaligned_le32(&buffer[21]); 508 frame->bFrameIntervalType = buffer[25]; 509 } else { 510 frame->dwMaxVideoFrameBufferSize = 0; 511 frame->dwDefaultFrameInterval = 512 get_unaligned_le32(&buffer[17]); 513 frame->bFrameIntervalType = buffer[21]; 514 } 515 frame->dwFrameInterval = *intervals; 516 517 /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize 518 * completely. Observed behaviours range from setting the 519 * value to 1.1x the actual frame size to hardwiring the 520 * 16 low bits to 0. This results in a higher than necessary 521 * memory usage as well as a wrong image size information. For 522 * uncompressed formats this can be fixed by computing the 523 * value from the frame size. 524 */ 525 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 526 frame->dwMaxVideoFrameBufferSize = format->bpp 527 * frame->wWidth * frame->wHeight / 8; 528 529 /* Some bogus devices report dwMinFrameInterval equal to 530 * dwMaxFrameInterval and have dwFrameIntervalStep set to 531 * zero. Setting all null intervals to 1 fixes the problem and 532 * some other divisions by zero that could happen. 533 */ 534 for (i = 0; i < n; ++i) { 535 interval = get_unaligned_le32(&buffer[26+4*i]); 536 *(*intervals)++ = interval ? interval : 1; 537 } 538 539 /* Make sure that the default frame interval stays between 540 * the boundaries. 541 */ 542 n -= frame->bFrameIntervalType ? 1 : 2; 543 frame->dwDefaultFrameInterval = 544 min(frame->dwFrameInterval[n], 545 max(frame->dwFrameInterval[0], 546 frame->dwDefaultFrameInterval)); 547 548 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { 549 frame->bFrameIntervalType = 1; 550 frame->dwFrameInterval[0] = 551 frame->dwDefaultFrameInterval; 552 } 553 554 uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", 555 frame->wWidth, frame->wHeight, 556 10000000/frame->dwDefaultFrameInterval, 557 (100000000/frame->dwDefaultFrameInterval)%10); 558 559 format->nframes++; 560 buflen -= buffer[0]; 561 buffer += buffer[0]; 562 } 563 564 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 565 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 566 buflen -= buffer[0]; 567 buffer += buffer[0]; 568 } 569 570 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 571 buffer[2] == UVC_VS_COLORFORMAT) { 572 if (buflen < 6) { 573 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 574 "interface %d COLORFORMAT error\n", 575 dev->udev->devnum, 576 alts->desc.bInterfaceNumber); 577 return -EINVAL; 578 } 579 580 format->colorspace = uvc_colorspace(buffer[3]); 581 582 buflen -= buffer[0]; 583 buffer += buffer[0]; 584 } 585 586 return buffer - start; 587} 588 589static int uvc_parse_streaming(struct uvc_device *dev, 590 struct usb_interface *intf) 591{ 592 struct uvc_streaming *streaming = NULL; 593 struct uvc_format *format; 594 struct uvc_frame *frame; 595 struct usb_host_interface *alts = &intf->altsetting[0]; 596 unsigned char *_buffer, *buffer = alts->extra; 597 int _buflen, buflen = alts->extralen; 598 unsigned int nformats = 0, nframes = 0, nintervals = 0; 599 unsigned int size, i, n, p; 600 __u32 *interval; 601 __u16 psize; 602 int ret = -EINVAL; 603 604 if (intf->cur_altsetting->desc.bInterfaceSubClass 605 != UVC_SC_VIDEOSTREAMING) { 606 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " 607 "video streaming interface\n", dev->udev->devnum, 608 intf->altsetting[0].desc.bInterfaceNumber); 609 return -EINVAL; 610 } 611 612 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 613 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " 614 "claimed\n", dev->udev->devnum, 615 intf->altsetting[0].desc.bInterfaceNumber); 616 return -EINVAL; 617 } 618 619 streaming = kzalloc(sizeof *streaming, GFP_KERNEL); 620 if (streaming == NULL) { 621 usb_driver_release_interface(&uvc_driver.driver, intf); 622 return -EINVAL; 623 } 624 625 mutex_init(&streaming->mutex); 626 streaming->dev = dev; 627 streaming->intf = usb_get_intf(intf); 628 streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 629 630 /* The Pico iMage webcam has its class-specific interface descriptors 631 * after the endpoint descriptors. 632 */ 633 if (buflen == 0) { 634 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 635 struct usb_host_endpoint *ep = &alts->endpoint[i]; 636 637 if (ep->extralen == 0) 638 continue; 639 640 if (ep->extralen > 2 && 641 ep->extra[1] == USB_DT_CS_INTERFACE) { 642 uvc_trace(UVC_TRACE_DESCR, "trying extra data " 643 "from endpoint %u.\n", i); 644 buffer = alts->endpoint[i].extra; 645 buflen = alts->endpoint[i].extralen; 646 break; 647 } 648 } 649 } 650 651 /* Skip the standard interface descriptors. */ 652 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 653 buflen -= buffer[0]; 654 buffer += buffer[0]; 655 } 656 657 if (buflen <= 2) { 658 uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " 659 "interface descriptors found.\n"); 660 goto error; 661 } 662 663 /* Parse the header descriptor. */ 664 switch (buffer[2]) { 665 case UVC_VS_OUTPUT_HEADER: 666 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 667 size = 9; 668 break; 669 670 case UVC_VS_INPUT_HEADER: 671 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 672 size = 13; 673 break; 674 675 default: 676 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 677 "%d HEADER descriptor not found.\n", dev->udev->devnum, 678 alts->desc.bInterfaceNumber); 679 goto error; 680 } 681 682 p = buflen >= 4 ? buffer[3] : 0; 683 n = buflen >= size ? buffer[size-1] : 0; 684 685 if (buflen < size + p*n) { 686 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 687 "interface %d HEADER descriptor is invalid.\n", 688 dev->udev->devnum, alts->desc.bInterfaceNumber); 689 goto error; 690 } 691 692 streaming->header.bNumFormats = p; 693 streaming->header.bEndpointAddress = buffer[6]; 694 if (buffer[2] == UVC_VS_INPUT_HEADER) { 695 streaming->header.bmInfo = buffer[7]; 696 streaming->header.bTerminalLink = buffer[8]; 697 streaming->header.bStillCaptureMethod = buffer[9]; 698 streaming->header.bTriggerSupport = buffer[10]; 699 streaming->header.bTriggerUsage = buffer[11]; 700 } else { 701 streaming->header.bTerminalLink = buffer[7]; 702 } 703 streaming->header.bControlSize = n; 704 705 streaming->header.bmaControls = kmemdup(&buffer[size], p * n, 706 GFP_KERNEL); 707 if (streaming->header.bmaControls == NULL) { 708 ret = -ENOMEM; 709 goto error; 710 } 711 712 buflen -= buffer[0]; 713 buffer += buffer[0]; 714 715 _buffer = buffer; 716 _buflen = buflen; 717 718 /* Count the format and frame descriptors. */ 719 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 720 switch (_buffer[2]) { 721 case UVC_VS_FORMAT_UNCOMPRESSED: 722 case UVC_VS_FORMAT_MJPEG: 723 case UVC_VS_FORMAT_FRAME_BASED: 724 nformats++; 725 break; 726 727 case UVC_VS_FORMAT_DV: 728 /* DV format has no frame descriptor. We will create a 729 * dummy frame descriptor with a dummy frame interval. 730 */ 731 nformats++; 732 nframes++; 733 nintervals++; 734 break; 735 736 case UVC_VS_FORMAT_MPEG2TS: 737 case UVC_VS_FORMAT_STREAM_BASED: 738 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " 739 "interface %d FORMAT %u is not supported.\n", 740 dev->udev->devnum, 741 alts->desc.bInterfaceNumber, _buffer[2]); 742 break; 743 744 case UVC_VS_FRAME_UNCOMPRESSED: 745 case UVC_VS_FRAME_MJPEG: 746 nframes++; 747 if (_buflen > 25) 748 nintervals += _buffer[25] ? _buffer[25] : 3; 749 break; 750 751 case UVC_VS_FRAME_FRAME_BASED: 752 nframes++; 753 if (_buflen > 21) 754 nintervals += _buffer[21] ? _buffer[21] : 3; 755 break; 756 } 757 758 _buflen -= _buffer[0]; 759 _buffer += _buffer[0]; 760 } 761 762 if (nformats == 0) { 763 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 764 "%d has no supported formats defined.\n", 765 dev->udev->devnum, alts->desc.bInterfaceNumber); 766 goto error; 767 } 768 769 size = nformats * sizeof *format + nframes * sizeof *frame 770 + nintervals * sizeof *interval; 771 format = kzalloc(size, GFP_KERNEL); 772 if (format == NULL) { 773 ret = -ENOMEM; 774 goto error; 775 } 776 777 frame = (struct uvc_frame *)&format[nformats]; 778 interval = (__u32 *)&frame[nframes]; 779 780 streaming->format = format; 781 streaming->nformats = nformats; 782 783 /* Parse the format descriptors. */ 784 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 785 switch (buffer[2]) { 786 case UVC_VS_FORMAT_UNCOMPRESSED: 787 case UVC_VS_FORMAT_MJPEG: 788 case UVC_VS_FORMAT_DV: 789 case UVC_VS_FORMAT_FRAME_BASED: 790 format->frame = frame; 791 ret = uvc_parse_format(dev, streaming, format, 792 &interval, buffer, buflen); 793 if (ret < 0) 794 goto error; 795 796 frame += format->nframes; 797 format++; 798 799 buflen -= ret; 800 buffer += ret; 801 continue; 802 803 default: 804 break; 805 } 806 807 buflen -= buffer[0]; 808 buffer += buffer[0]; 809 } 810 811 if (buflen) 812 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " 813 "%d has %u bytes of trailing descriptor garbage.\n", 814 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 815 816 /* Parse the alternate settings to find the maximum bandwidth. */ 817 for (i = 0; i < intf->num_altsetting; ++i) { 818 struct usb_host_endpoint *ep; 819 alts = &intf->altsetting[i]; 820 ep = uvc_find_endpoint(alts, 821 streaming->header.bEndpointAddress); 822 if (ep == NULL) 823 continue; 824 825 psize = le16_to_cpu(ep->desc.wMaxPacketSize); 826 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); 827 if (psize > streaming->maxpsize) 828 streaming->maxpsize = psize; 829 } 830 831 list_add_tail(&streaming->list, &dev->streams); 832 return 0; 833 834error: 835 usb_driver_release_interface(&uvc_driver.driver, intf); 836 usb_put_intf(intf); 837 kfree(streaming->format); 838 kfree(streaming->header.bmaControls); 839 kfree(streaming); 840 return ret; 841} 842 843static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, 844 unsigned int num_pads, unsigned int extra_size) 845{ 846 struct uvc_entity *entity; 847 unsigned int num_inputs; 848 unsigned int size; 849 unsigned int i; 850 851 extra_size = ALIGN(extra_size, sizeof(*entity->pads)); 852 num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; 853 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads 854 + num_inputs; 855 entity = kzalloc(size, GFP_KERNEL); 856 if (entity == NULL) 857 return NULL; 858 859 entity->id = id; 860 entity->type = type; 861 862 entity->num_links = 0; 863 entity->num_pads = num_pads; 864 entity->pads = ((void *)(entity + 1)) + extra_size; 865 866 for (i = 0; i < num_inputs; ++i) 867 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 868 if (!UVC_ENTITY_IS_OTERM(entity)) 869 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; 870 871 entity->bNrInPins = num_inputs; 872 entity->baSourceID = (__u8 *)(&entity->pads[num_pads]); 873 874 return entity; 875} 876 877/* Parse vendor-specific extensions. */ 878static int uvc_parse_vendor_control(struct uvc_device *dev, 879 const unsigned char *buffer, int buflen) 880{ 881 struct usb_device *udev = dev->udev; 882 struct usb_host_interface *alts = dev->intf->cur_altsetting; 883 struct uvc_entity *unit; 884 unsigned int n, p; 885 int handled = 0; 886 887 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 888 case 0x046d: /* Logitech */ 889 if (buffer[1] != 0x41 || buffer[2] != 0x01) 890 break; 891 892 /* Logitech implements several vendor specific functions 893 * through vendor specific extension units (LXU). 894 * 895 * The LXU descriptors are similar to XU descriptors 896 * (see "USB Device Video Class for Video Devices", section 897 * 3.7.2.6 "Extension Unit Descriptor") with the following 898 * differences: 899 * 900 * ---------------------------------------------------------- 901 * 0 bLength 1 Number 902 * Size of this descriptor, in bytes: 24+p+n*2 903 * ---------------------------------------------------------- 904 * 23+p+n bmControlsType N Bitmap 905 * Individual bits in the set are defined: 906 * 0: Absolute 907 * 1: Relative 908 * 909 * This bitset is mapped exactly the same as bmControls. 910 * ---------------------------------------------------------- 911 * 23+p+n*2 bReserved 1 Boolean 912 * ---------------------------------------------------------- 913 * 24+p+n*2 iExtension 1 Index 914 * Index of a string descriptor that describes this 915 * extension unit. 916 * ---------------------------------------------------------- 917 */ 918 p = buflen >= 22 ? buffer[21] : 0; 919 n = buflen >= 25 + p ? buffer[22+p] : 0; 920 921 if (buflen < 25 + p + 2*n) { 922 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 923 "interface %d EXTENSION_UNIT error\n", 924 udev->devnum, alts->desc.bInterfaceNumber); 925 break; 926 } 927 928 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], 929 p + 1, 2*n); 930 if (unit == NULL) 931 return -ENOMEM; 932 933 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 934 unit->extension.bNumControls = buffer[20]; 935 memcpy(unit->baSourceID, &buffer[22], p); 936 unit->extension.bControlSize = buffer[22+p]; 937 unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); 938 unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) 939 + n; 940 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 941 942 if (buffer[24+p+2*n] != 0) 943 usb_string(udev, buffer[24+p+2*n], unit->name, 944 sizeof unit->name); 945 else 946 sprintf(unit->name, "Extension %u", buffer[3]); 947 948 list_add_tail(&unit->list, &dev->entities); 949 handled = 1; 950 break; 951 } 952 953 return handled; 954} 955 956static int uvc_parse_standard_control(struct uvc_device *dev, 957 const unsigned char *buffer, int buflen) 958{ 959 struct usb_device *udev = dev->udev; 960 struct uvc_entity *unit, *term; 961 struct usb_interface *intf; 962 struct usb_host_interface *alts = dev->intf->cur_altsetting; 963 unsigned int i, n, p, len; 964 __u16 type; 965 966 switch (buffer[2]) { 967 case UVC_VC_HEADER: 968 n = buflen >= 12 ? buffer[11] : 0; 969 970 if (buflen < 12 + n) { 971 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 972 "interface %d HEADER error\n", udev->devnum, 973 alts->desc.bInterfaceNumber); 974 return -EINVAL; 975 } 976 977 dev->uvc_version = get_unaligned_le16(&buffer[3]); 978 dev->clock_frequency = get_unaligned_le32(&buffer[7]); 979 980 /* Parse all USB Video Streaming interfaces. */ 981 for (i = 0; i < n; ++i) { 982 intf = usb_ifnum_to_if(udev, buffer[12+i]); 983 if (intf == NULL) { 984 uvc_trace(UVC_TRACE_DESCR, "device %d " 985 "interface %d doesn't exists\n", 986 udev->devnum, i); 987 continue; 988 } 989 990 uvc_parse_streaming(dev, intf); 991 } 992 break; 993 994 case UVC_VC_INPUT_TERMINAL: 995 if (buflen < 8) { 996 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 997 "interface %d INPUT_TERMINAL error\n", 998 udev->devnum, alts->desc.bInterfaceNumber); 999 return -EINVAL; 1000 } 1001 1002 /* Make sure the terminal type MSB is not null, otherwise it 1003 * could be confused with a unit. 1004 */ 1005 type = get_unaligned_le16(&buffer[4]); 1006 if ((type & 0xff00) == 0) { 1007 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1008 "interface %d INPUT_TERMINAL %d has invalid " 1009 "type 0x%04x, skipping\n", udev->devnum, 1010 alts->desc.bInterfaceNumber, 1011 buffer[3], type); 1012 return 0; 1013 } 1014 1015 n = 0; 1016 p = 0; 1017 len = 8; 1018 1019 if (type == UVC_ITT_CAMERA) { 1020 n = buflen >= 15 ? buffer[14] : 0; 1021 len = 15; 1022 1023 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1024 n = buflen >= 9 ? buffer[8] : 0; 1025 p = buflen >= 10 + n ? buffer[9+n] : 0; 1026 len = 10; 1027 } 1028 1029 if (buflen < len + n + p) { 1030 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1031 "interface %d INPUT_TERMINAL error\n", 1032 udev->devnum, alts->desc.bInterfaceNumber); 1033 return -EINVAL; 1034 } 1035 1036 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], 1037 1, n + p); 1038 if (term == NULL) 1039 return -ENOMEM; 1040 1041 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 1042 term->camera.bControlSize = n; 1043 term->camera.bmControls = (__u8 *)term + sizeof *term; 1044 term->camera.wObjectiveFocalLengthMin = 1045 get_unaligned_le16(&buffer[8]); 1046 term->camera.wObjectiveFocalLengthMax = 1047 get_unaligned_le16(&buffer[10]); 1048 term->camera.wOcularFocalLength = 1049 get_unaligned_le16(&buffer[12]); 1050 memcpy(term->camera.bmControls, &buffer[15], n); 1051 } else if (UVC_ENTITY_TYPE(term) == 1052 UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1053 term->media.bControlSize = n; 1054 term->media.bmControls = (__u8 *)term + sizeof *term; 1055 term->media.bTransportModeSize = p; 1056 term->media.bmTransportModes = (__u8 *)term 1057 + sizeof *term + n; 1058 memcpy(term->media.bmControls, &buffer[9], n); 1059 memcpy(term->media.bmTransportModes, &buffer[10+n], p); 1060 } 1061 1062 if (buffer[7] != 0) 1063 usb_string(udev, buffer[7], term->name, 1064 sizeof term->name); 1065 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 1066 sprintf(term->name, "Camera %u", buffer[3]); 1067 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 1068 sprintf(term->name, "Media %u", buffer[3]); 1069 else 1070 sprintf(term->name, "Input %u", buffer[3]); 1071 1072 list_add_tail(&term->list, &dev->entities); 1073 break; 1074 1075 case UVC_VC_OUTPUT_TERMINAL: 1076 if (buflen < 9) { 1077 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1078 "interface %d OUTPUT_TERMINAL error\n", 1079 udev->devnum, alts->desc.bInterfaceNumber); 1080 return -EINVAL; 1081 } 1082 1083 /* Make sure the terminal type MSB is not null, otherwise it 1084 * could be confused with a unit. 1085 */ 1086 type = get_unaligned_le16(&buffer[4]); 1087 if ((type & 0xff00) == 0) { 1088 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1089 "interface %d OUTPUT_TERMINAL %d has invalid " 1090 "type 0x%04x, skipping\n", udev->devnum, 1091 alts->desc.bInterfaceNumber, buffer[3], type); 1092 return 0; 1093 } 1094 1095 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], 1096 1, 0); 1097 if (term == NULL) 1098 return -ENOMEM; 1099 1100 memcpy(term->baSourceID, &buffer[7], 1); 1101 1102 if (buffer[8] != 0) 1103 usb_string(udev, buffer[8], term->name, 1104 sizeof term->name); 1105 else 1106 sprintf(term->name, "Output %u", buffer[3]); 1107 1108 list_add_tail(&term->list, &dev->entities); 1109 break; 1110 1111 case UVC_VC_SELECTOR_UNIT: 1112 p = buflen >= 5 ? buffer[4] : 0; 1113 1114 if (buflen < 5 || buflen < 6 + p) { 1115 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1116 "interface %d SELECTOR_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, 0); 1122 if (unit == NULL) 1123 return -ENOMEM; 1124 1125 memcpy(unit->baSourceID, &buffer[5], p); 1126 1127 if (buffer[5+p] != 0) 1128 usb_string(udev, buffer[5+p], unit->name, 1129 sizeof unit->name); 1130 else 1131 sprintf(unit->name, "Selector %u", buffer[3]); 1132 1133 list_add_tail(&unit->list, &dev->entities); 1134 break; 1135 1136 case UVC_VC_PROCESSING_UNIT: 1137 n = buflen >= 8 ? buffer[7] : 0; 1138 p = dev->uvc_version >= 0x0110 ? 10 : 9; 1139 1140 if (buflen < p + n) { 1141 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1142 "interface %d PROCESSING_UNIT error\n", 1143 udev->devnum, alts->desc.bInterfaceNumber); 1144 return -EINVAL; 1145 } 1146 1147 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); 1148 if (unit == NULL) 1149 return -ENOMEM; 1150 1151 memcpy(unit->baSourceID, &buffer[4], 1); 1152 unit->processing.wMaxMultiplier = 1153 get_unaligned_le16(&buffer[5]); 1154 unit->processing.bControlSize = buffer[7]; 1155 unit->processing.bmControls = (__u8 *)unit + sizeof *unit; 1156 memcpy(unit->processing.bmControls, &buffer[8], n); 1157 if (dev->uvc_version >= 0x0110) 1158 unit->processing.bmVideoStandards = buffer[9+n]; 1159 1160 if (buffer[8+n] != 0) 1161 usb_string(udev, buffer[8+n], unit->name, 1162 sizeof unit->name); 1163 else 1164 sprintf(unit->name, "Processing %u", buffer[3]); 1165 1166 list_add_tail(&unit->list, &dev->entities); 1167 break; 1168 1169 case UVC_VC_EXTENSION_UNIT: 1170 p = buflen >= 22 ? buffer[21] : 0; 1171 n = buflen >= 24 + p ? buffer[22+p] : 0; 1172 1173 if (buflen < 24 + p + n) { 1174 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " 1175 "interface %d EXTENSION_UNIT error\n", 1176 udev->devnum, alts->desc.bInterfaceNumber); 1177 return -EINVAL; 1178 } 1179 1180 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); 1181 if (unit == NULL) 1182 return -ENOMEM; 1183 1184 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); 1185 unit->extension.bNumControls = buffer[20]; 1186 memcpy(unit->baSourceID, &buffer[22], p); 1187 unit->extension.bControlSize = buffer[22+p]; 1188 unit->extension.bmControls = (__u8 *)unit + sizeof *unit; 1189 memcpy(unit->extension.bmControls, &buffer[23+p], n); 1190 1191 if (buffer[23+p+n] != 0) 1192 usb_string(udev, buffer[23+p+n], unit->name, 1193 sizeof unit->name); 1194 else 1195 sprintf(unit->name, "Extension %u", buffer[3]); 1196 1197 list_add_tail(&unit->list, &dev->entities); 1198 break; 1199 1200 default: 1201 uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " 1202 "descriptor (%u)\n", buffer[2]); 1203 break; 1204 } 1205 1206 return 0; 1207} 1208 1209static int uvc_parse_control(struct uvc_device *dev) 1210{ 1211 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1212 unsigned char *buffer = alts->extra; 1213 int buflen = alts->extralen; 1214 int ret; 1215 1216 /* Parse the default alternate setting only, as the UVC specification 1217 * defines a single alternate setting, the default alternate setting 1218 * zero. 1219 */ 1220 1221 while (buflen > 2) { 1222 if (uvc_parse_vendor_control(dev, buffer, buflen) || 1223 buffer[1] != USB_DT_CS_INTERFACE) 1224 goto next_descriptor; 1225 1226 if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) 1227 return ret; 1228 1229next_descriptor: 1230 buflen -= buffer[0]; 1231 buffer += buffer[0]; 1232 } 1233 1234 /* Check if the optional status endpoint is present. Built-in iSight 1235 * webcams have an interrupt endpoint but spit proprietary data that 1236 * don't conform to the UVC status endpoint messages. Don't try to 1237 * handle the interrupt endpoint for those cameras. 1238 */ 1239 if (alts->desc.bNumEndpoints == 1 && 1240 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1241 struct usb_host_endpoint *ep = &alts->endpoint[0]; 1242 struct usb_endpoint_descriptor *desc = &ep->desc; 1243 1244 if (usb_endpoint_is_int_in(desc) && 1245 le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1246 desc->bInterval != 0) { 1247 uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " 1248 "(addr %02x).\n", desc->bEndpointAddress); 1249 dev->int_ep = ep; 1250 } 1251 } 1252 1253 return 0; 1254} 1255 1256/* ------------------------------------------------------------------------ 1257 * UVC device scan 1258 */ 1259 1260/* 1261 * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1262 * and containing the following units: 1263 * 1264 * - one or more Output Terminals (USB Streaming or Display) 1265 * - zero or one Processing Unit 1266 * - zero, one or more single-input Selector Units 1267 * - zero or one multiple-input Selector Units, provided all inputs are 1268 * connected to input terminals 1269 * - zero, one or mode single-input Extension Units 1270 * - one or more Input Terminals (Camera, External or USB Streaming) 1271 * 1272 * The terminal and units must match on of the following structures: 1273 * 1274 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 1275 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 1276 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 1277 * 1278 * +---------+ +---------+ -> OTT_*(0) 1279 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 1280 * +---------+ +---------+ -> OTT_*(n) 1281 * 1282 * The Processing Unit and Extension Units can be in any order. Additional 1283 * Extension Units connected to the main chain as single-unit branches are 1284 * also supported. Single-input Selector Units are ignored. 1285 */ 1286static int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1287 struct uvc_entity *entity) 1288{ 1289 switch (UVC_ENTITY_TYPE(entity)) { 1290 case UVC_VC_EXTENSION_UNIT: 1291 if (uvc_trace_param & UVC_TRACE_PROBE) 1292 printk(" <- XU %d", entity->id); 1293 1294 if (entity->bNrInPins != 1) { 1295 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " 1296 "than 1 input pin.\n", entity->id); 1297 return -1; 1298 } 1299 1300 break; 1301 1302 case UVC_VC_PROCESSING_UNIT: 1303 if (uvc_trace_param & UVC_TRACE_PROBE) 1304 printk(" <- PU %d", entity->id); 1305 1306 if (chain->processing != NULL) { 1307 uvc_trace(UVC_TRACE_DESCR, "Found multiple " 1308 "Processing Units in chain.\n"); 1309 return -1; 1310 } 1311 1312 chain->processing = entity; 1313 break; 1314 1315 case UVC_VC_SELECTOR_UNIT: 1316 if (uvc_trace_param & UVC_TRACE_PROBE) 1317 printk(" <- SU %d", entity->id); 1318 1319 /* Single-input selector units are ignored. */ 1320 if (entity->bNrInPins == 1) 1321 break; 1322 1323 if (chain->selector != NULL) { 1324 uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " 1325 "Units in chain.\n"); 1326 return -1; 1327 } 1328 1329 chain->selector = entity; 1330 break; 1331 1332 case UVC_ITT_VENDOR_SPECIFIC: 1333 case UVC_ITT_CAMERA: 1334 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1335 if (uvc_trace_param & UVC_TRACE_PROBE) 1336 printk(" <- IT %d\n", entity->id); 1337 1338 break; 1339 1340 case UVC_OTT_VENDOR_SPECIFIC: 1341 case UVC_OTT_DISPLAY: 1342 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1343 if (uvc_trace_param & UVC_TRACE_PROBE) 1344 printk(" OT %d", entity->id); 1345 1346 break; 1347 1348 case UVC_TT_STREAMING: 1349 if (UVC_ENTITY_IS_ITERM(entity)) { 1350 if (uvc_trace_param & UVC_TRACE_PROBE) 1351 printk(" <- IT %d\n", entity->id); 1352 } else { 1353 if (uvc_trace_param & UVC_TRACE_PROBE) 1354 printk(" OT %d", entity->id); 1355 } 1356 1357 break; 1358 1359 default: 1360 uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " 1361 "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); 1362 return -1; 1363 } 1364 1365 list_add_tail(&entity->chain, &chain->entities); 1366 return 0; 1367} 1368 1369static int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1370 struct uvc_entity *entity, struct uvc_entity *prev) 1371{ 1372 struct uvc_entity *forward; 1373 int found; 1374 1375 /* Forward scan */ 1376 forward = NULL; 1377 found = 0; 1378 1379 while (1) { 1380 forward = uvc_entity_by_reference(chain->dev, entity->id, 1381 forward); 1382 if (forward == NULL) 1383 break; 1384 if (forward == prev) 1385 continue; 1386 1387 switch (UVC_ENTITY_TYPE(forward)) { 1388 case UVC_VC_EXTENSION_UNIT: 1389 if (forward->bNrInPins != 1) { 1390 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " 1391 "has more than 1 input pin.\n", 1392 entity->id); 1393 return -EINVAL; 1394 } 1395 1396 list_add_tail(&forward->chain, &chain->entities); 1397 if (uvc_trace_param & UVC_TRACE_PROBE) { 1398 if (!found) 1399 printk(" (->"); 1400 1401 printk(" XU %d", forward->id); 1402 found = 1; 1403 } 1404 break; 1405 1406 case UVC_OTT_VENDOR_SPECIFIC: 1407 case UVC_OTT_DISPLAY: 1408 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1409 case UVC_TT_STREAMING: 1410 if (UVC_ENTITY_IS_ITERM(forward)) { 1411 uvc_trace(UVC_TRACE_DESCR, "Unsupported input " 1412 "terminal %u.\n", forward->id); 1413 return -EINVAL; 1414 } 1415 1416 list_add_tail(&forward->chain, &chain->entities); 1417 if (uvc_trace_param & UVC_TRACE_PROBE) { 1418 if (!found) 1419 printk(" (->"); 1420 1421 printk(" OT %d", forward->id); 1422 found = 1; 1423 } 1424 break; 1425 } 1426 } 1427 if (found) 1428 printk(")"); 1429 1430 return 0; 1431} 1432 1433static int uvc_scan_chain_backward(struct uvc_video_chain *chain, 1434 struct uvc_entity **_entity) 1435{ 1436 struct uvc_entity *entity = *_entity; 1437 struct uvc_entity *term; 1438 int id = -EINVAL, i; 1439 1440 switch (UVC_ENTITY_TYPE(entity)) { 1441 case UVC_VC_EXTENSION_UNIT: 1442 case UVC_VC_PROCESSING_UNIT: 1443 id = entity->baSourceID[0]; 1444 break; 1445 1446 case UVC_VC_SELECTOR_UNIT: 1447 /* Single-input selector units are ignored. */ 1448 if (entity->bNrInPins == 1) { 1449 id = entity->baSourceID[0]; 1450 break; 1451 } 1452 1453 if (uvc_trace_param & UVC_TRACE_PROBE) 1454 printk(" <- IT"); 1455 1456 chain->selector = entity; 1457 for (i = 0; i < entity->bNrInPins; ++i) { 1458 id = entity->baSourceID[i]; 1459 term = uvc_entity_by_id(chain->dev, id); 1460 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1461 uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " 1462 "input %d isn't connected to an " 1463 "input terminal\n", entity->id, i); 1464 return -1; 1465 } 1466 1467 if (uvc_trace_param & UVC_TRACE_PROBE) 1468 printk(" %d", term->id); 1469 1470 list_add_tail(&term->chain, &chain->entities); 1471 uvc_scan_chain_forward(chain, term, entity); 1472 } 1473 1474 if (uvc_trace_param & UVC_TRACE_PROBE) 1475 printk("\n"); 1476 1477 id = 0; 1478 break; 1479 1480 case UVC_ITT_VENDOR_SPECIFIC: 1481 case UVC_ITT_CAMERA: 1482 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1483 case UVC_OTT_VENDOR_SPECIFIC: 1484 case UVC_OTT_DISPLAY: 1485 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1486 case UVC_TT_STREAMING: 1487 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 1488 break; 1489 } 1490 1491 if (id <= 0) { 1492 *_entity = NULL; 1493 return id; 1494 } 1495 1496 entity = uvc_entity_by_id(chain->dev, id); 1497 if (entity == NULL) { 1498 uvc_trace(UVC_TRACE_DESCR, "Found reference to " 1499 "unknown entity %d.\n", id); 1500 return -EINVAL; 1501 } 1502 1503 *_entity = entity; 1504 return 0; 1505} 1506 1507static int uvc_scan_chain(struct uvc_video_chain *chain, 1508 struct uvc_entity *term) 1509{ 1510 struct uvc_entity *entity, *prev; 1511 1512 uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); 1513 1514 entity = term; 1515 prev = NULL; 1516 1517 while (entity != NULL) { 1518 /* Entity must not be part of an existing chain */ 1519 if (entity->chain.next || entity->chain.prev) { 1520 uvc_trace(UVC_TRACE_DESCR, "Found reference to " 1521 "entity %d already in chain.\n", entity->id); 1522 return -EINVAL; 1523 } 1524 1525 /* Process entity */ 1526 if (uvc_scan_chain_entity(chain, entity) < 0) 1527 return -EINVAL; 1528 1529 /* Forward scan */ 1530 if (uvc_scan_chain_forward(chain, entity, prev) < 0) 1531 return -EINVAL; 1532 1533 /* Backward scan */ 1534 prev = entity; 1535 if (uvc_scan_chain_backward(chain, &entity) < 0) 1536 return -EINVAL; 1537 } 1538 1539 return 0; 1540} 1541 1542static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 1543 char *buffer) 1544{ 1545 struct uvc_entity *term; 1546 unsigned int nterms = 0; 1547 char *p = buffer; 1548 1549 list_for_each_entry(term, terms, chain) { 1550 if (!UVC_ENTITY_IS_TERM(term) || 1551 UVC_TERM_DIRECTION(term) != dir) 1552 continue; 1553 1554 if (nterms) 1555 p += sprintf(p, ","); 1556 if (++nterms >= 4) { 1557 p += sprintf(p, "..."); 1558 break; 1559 } 1560 p += sprintf(p, "%u", term->id); 1561 } 1562 1563 return p - buffer; 1564} 1565 1566static const char *uvc_print_chain(struct uvc_video_chain *chain) 1567{ 1568 static char buffer[43]; 1569 char *p = buffer; 1570 1571 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 1572 p += sprintf(p, " -> "); 1573 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 1574 1575 return buffer; 1576} 1577 1578/* 1579 * Scan the device for video chains and register video devices. 1580 * 1581 * Chains are scanned starting at their output terminals and walked backwards. 1582 */ 1583static int uvc_scan_device(struct uvc_device *dev) 1584{ 1585 struct uvc_video_chain *chain; 1586 struct uvc_entity *term; 1587 1588 list_for_each_entry(term, &dev->entities, list) { 1589 if (!UVC_ENTITY_IS_OTERM(term)) 1590 continue; 1591 1592 /* If the terminal is already included in a chain, skip it. 1593 * This can happen for chains that have multiple output 1594 * terminals, where all output terminals beside the first one 1595 * will be inserted in the chain in forward scans. 1596 */ 1597 if (term->chain.next || term->chain.prev) 1598 continue; 1599 1600 chain = kzalloc(sizeof(*chain), GFP_KERNEL); 1601 if (chain == NULL) 1602 return -ENOMEM; 1603 1604 INIT_LIST_HEAD(&chain->entities); 1605 mutex_init(&chain->ctrl_mutex); 1606 chain->dev = dev; 1607 v4l2_prio_init(&chain->prio); 1608 1609 term->flags |= UVC_ENTITY_FLAG_DEFAULT; 1610 1611 if (uvc_scan_chain(chain, term) < 0) { 1612 kfree(chain); 1613 continue; 1614 } 1615 1616 uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", 1617 uvc_print_chain(chain)); 1618 1619 list_add_tail(&chain->list, &dev->chains); 1620 } 1621 1622 if (list_empty(&dev->chains)) { 1623 uvc_printk(KERN_INFO, "No valid video chain found.\n"); 1624 return -1; 1625 } 1626 1627 return 0; 1628} 1629 1630/* ------------------------------------------------------------------------ 1631 * Video device registration and unregistration 1632 */ 1633 1634/* 1635 * Delete the UVC device. 1636 * 1637 * Called by the kernel when the last reference to the uvc_device structure 1638 * is released. 1639 * 1640 * As this function is called after or during disconnect(), all URBs have 1641 * already been canceled by the USB core. There is no need to kill the 1642 * interrupt URB manually. 1643 */ 1644static void uvc_delete(struct uvc_device *dev) 1645{ 1646 struct list_head *p, *n; 1647 1648 uvc_status_cleanup(dev); 1649 uvc_ctrl_cleanup_device(dev); 1650 1651 usb_put_intf(dev->intf); 1652 usb_put_dev(dev->udev); 1653 1654 if (dev->vdev.dev) 1655 v4l2_device_unregister(&dev->vdev); 1656#ifdef CONFIG_MEDIA_CONTROLLER 1657 if (media_devnode_is_registered(&dev->mdev.devnode)) 1658 media_device_unregister(&dev->mdev); 1659#endif 1660 1661 list_for_each_safe(p, n, &dev->chains) { 1662 struct uvc_video_chain *chain; 1663 chain = list_entry(p, struct uvc_video_chain, list); 1664 kfree(chain); 1665 } 1666 1667 list_for_each_safe(p, n, &dev->entities) { 1668 struct uvc_entity *entity; 1669 entity = list_entry(p, struct uvc_entity, list); 1670#ifdef CONFIG_MEDIA_CONTROLLER 1671 uvc_mc_cleanup_entity(entity); 1672#endif 1673 kfree(entity); 1674 } 1675 1676 list_for_each_safe(p, n, &dev->streams) { 1677 struct uvc_streaming *streaming; 1678 streaming = list_entry(p, struct uvc_streaming, list); 1679 usb_driver_release_interface(&uvc_driver.driver, 1680 streaming->intf); 1681 usb_put_intf(streaming->intf); 1682 kfree(streaming->format); 1683 kfree(streaming->header.bmaControls); 1684 kfree(streaming); 1685 } 1686 1687 kfree(dev); 1688} 1689 1690static void uvc_release(struct video_device *vdev) 1691{ 1692 struct uvc_streaming *stream = video_get_drvdata(vdev); 1693 struct uvc_device *dev = stream->dev; 1694 1695 /* Decrement the registered streams count and delete the device when it 1696 * reaches zero. 1697 */ 1698 if (atomic_dec_and_test(&dev->nstreams)) 1699 uvc_delete(dev); 1700} 1701 1702/* 1703 * Unregister the video devices. 1704 */ 1705static void uvc_unregister_video(struct uvc_device *dev) 1706{ 1707 struct uvc_streaming *stream; 1708 1709 /* Unregistering all video devices might result in uvc_delete() being 1710 * called from inside the loop if there's no open file handle. To avoid 1711 * that, increment the stream count before iterating over the streams 1712 * and decrement it when done. 1713 */ 1714 atomic_inc(&dev->nstreams); 1715 1716 list_for_each_entry(stream, &dev->streams, list) { 1717 if (!video_is_registered(&stream->vdev)) 1718 continue; 1719 1720 video_unregister_device(&stream->vdev); 1721 1722 uvc_debugfs_cleanup_stream(stream); 1723 } 1724 1725 /* Decrement the stream count and call uvc_delete explicitly if there 1726 * are no stream left. 1727 */ 1728 if (atomic_dec_and_test(&dev->nstreams)) 1729 uvc_delete(dev); 1730} 1731 1732static int uvc_register_video(struct uvc_device *dev, 1733 struct uvc_streaming *stream) 1734{ 1735 struct video_device *vdev = &stream->vdev; 1736 int ret; 1737 1738 /* Initialize the video buffers queue. */ 1739 ret = uvc_queue_init(&stream->queue, stream->type, !uvc_no_drop_param); 1740 if (ret) 1741 return ret; 1742 1743 /* Initialize the streaming interface with default streaming 1744 * parameters. 1745 */ 1746 ret = uvc_video_init(stream); 1747 if (ret < 0) { 1748 uvc_printk(KERN_ERR, "Failed to initialize the device " 1749 "(%d).\n", ret); 1750 return ret; 1751 } 1752 1753 uvc_debugfs_init_stream(stream); 1754 1755 /* Register the device with V4L. */ 1756 1757 /* We already hold a reference to dev->udev. The video device will be 1758 * unregistered before the reference is released, so we don't need to 1759 * get another one. 1760 */ 1761 vdev->v4l2_dev = &dev->vdev; 1762 vdev->fops = &uvc_fops; 1763 vdev->ioctl_ops = &uvc_ioctl_ops; 1764 vdev->release = uvc_release; 1765 vdev->prio = &stream->chain->prio; 1766 if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 1767 vdev->vfl_dir = VFL_DIR_TX; 1768 strlcpy(vdev->name, dev->name, sizeof vdev->name); 1769 1770 /* Set the driver data before calling video_register_device, otherwise 1771 * uvc_v4l2_open might race us. 1772 */ 1773 video_set_drvdata(vdev, stream); 1774 1775 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); 1776 if (ret < 0) { 1777 uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", 1778 ret); 1779 return ret; 1780 } 1781 1782 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 1783 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE; 1784 else 1785 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; 1786 1787 atomic_inc(&dev->nstreams); 1788 return 0; 1789} 1790 1791/* 1792 * Register all video devices in all chains. 1793 */ 1794static int uvc_register_terms(struct uvc_device *dev, 1795 struct uvc_video_chain *chain) 1796{ 1797 struct uvc_streaming *stream; 1798 struct uvc_entity *term; 1799 int ret; 1800 1801 list_for_each_entry(term, &chain->entities, chain) { 1802 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 1803 continue; 1804 1805 stream = uvc_stream_by_id(dev, term->id); 1806 if (stream == NULL) { 1807 uvc_printk(KERN_INFO, "No streaming interface found " 1808 "for terminal %u.", term->id); 1809 continue; 1810 } 1811 1812 stream->chain = chain; 1813 ret = uvc_register_video(dev, stream); 1814 if (ret < 0) 1815 return ret; 1816 1817 term->vdev = &stream->vdev; 1818 } 1819 1820 return 0; 1821} 1822 1823static int uvc_register_chains(struct uvc_device *dev) 1824{ 1825 struct uvc_video_chain *chain; 1826 int ret; 1827 1828 list_for_each_entry(chain, &dev->chains, list) { 1829 ret = uvc_register_terms(dev, chain); 1830 if (ret < 0) 1831 return ret; 1832 1833#ifdef CONFIG_MEDIA_CONTROLLER 1834 ret = uvc_mc_register_entities(chain); 1835 if (ret < 0) { 1836 uvc_printk(KERN_INFO, "Failed to register entites " 1837 "(%d).\n", ret); 1838 } 1839#endif 1840 } 1841 1842 return 0; 1843} 1844 1845/* ------------------------------------------------------------------------ 1846 * USB probe, disconnect, suspend and resume 1847 */ 1848 1849static int uvc_probe(struct usb_interface *intf, 1850 const struct usb_device_id *id) 1851{ 1852 struct usb_device *udev = interface_to_usbdev(intf); 1853 struct uvc_device *dev; 1854 int ret; 1855 1856 if (id->idVendor && id->idProduct) 1857 uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " 1858 "(%04x:%04x)\n", udev->devpath, id->idVendor, 1859 id->idProduct); 1860 else 1861 uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", 1862 udev->devpath); 1863 1864 /* Allocate memory for the device and initialize it. */ 1865 if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) 1866 return -ENOMEM; 1867 1868 INIT_LIST_HEAD(&dev->entities); 1869 INIT_LIST_HEAD(&dev->chains); 1870 INIT_LIST_HEAD(&dev->streams); 1871 atomic_set(&dev->nstreams, 0); 1872 atomic_set(&dev->nmappings, 0); 1873 mutex_init(&dev->lock); 1874 1875 dev->udev = usb_get_dev(udev); 1876 dev->intf = usb_get_intf(intf); 1877 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 1878 dev->quirks = (uvc_quirks_param == -1) 1879 ? id->driver_info : uvc_quirks_param; 1880 1881 if (udev->product != NULL) 1882 strlcpy(dev->name, udev->product, sizeof dev->name); 1883 else 1884 snprintf(dev->name, sizeof dev->name, 1885 "UVC Camera (%04x:%04x)", 1886 le16_to_cpu(udev->descriptor.idVendor), 1887 le16_to_cpu(udev->descriptor.idProduct)); 1888 1889 /* Parse the Video Class control descriptor. */ 1890 if (uvc_parse_control(dev) < 0) { 1891 uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " 1892 "descriptors.\n"); 1893 goto error; 1894 } 1895 1896 uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", 1897 dev->uvc_version >> 8, dev->uvc_version & 0xff, 1898 udev->product ? udev->product : "<unnamed>", 1899 le16_to_cpu(udev->descriptor.idVendor), 1900 le16_to_cpu(udev->descriptor.idProduct)); 1901 1902 if (dev->quirks != id->driver_info) { 1903 uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " 1904 "parameter for testing purpose.\n", dev->quirks); 1905 uvc_printk(KERN_INFO, "Please report required quirks to the " 1906 "linux-uvc-devel mailing list.\n"); 1907 } 1908 1909 /* Register the media and V4L2 devices. */ 1910#ifdef CONFIG_MEDIA_CONTROLLER 1911 dev->mdev.dev = &intf->dev; 1912 strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); 1913 if (udev->serial) 1914 strlcpy(dev->mdev.serial, udev->serial, 1915 sizeof(dev->mdev.serial)); 1916 strcpy(dev->mdev.bus_info, udev->devpath); 1917 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 1918 dev->mdev.driver_version = LINUX_VERSION_CODE; 1919 if (media_device_register(&dev->mdev) < 0) 1920 goto error; 1921 1922 dev->vdev.mdev = &dev->mdev; 1923#endif 1924 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) 1925 goto error; 1926 1927 /* Initialize controls. */ 1928 if (uvc_ctrl_init_device(dev) < 0) 1929 goto error; 1930 1931 /* Scan the device for video chains. */ 1932 if (uvc_scan_device(dev) < 0) 1933 goto error; 1934 1935 /* Register video device nodes. */ 1936 if (uvc_register_chains(dev) < 0) 1937 goto error; 1938 1939 /* Save our data pointer in the interface data. */ 1940 usb_set_intfdata(intf, dev); 1941 1942 /* Initialize the interrupt URB. */ 1943 if ((ret = uvc_status_init(dev)) < 0) { 1944 uvc_printk(KERN_INFO, "Unable to initialize the status " 1945 "endpoint (%d), status interrupt will not be " 1946 "supported.\n", ret); 1947 } 1948 1949 uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); 1950 usb_enable_autosuspend(udev); 1951 return 0; 1952 1953error: 1954 uvc_unregister_video(dev); 1955 return -ENODEV; 1956} 1957 1958static void uvc_disconnect(struct usb_interface *intf) 1959{ 1960 struct uvc_device *dev = usb_get_intfdata(intf); 1961 1962 /* Set the USB interface data to NULL. This can be done outside the 1963 * lock, as there's no other reader. 1964 */ 1965 usb_set_intfdata(intf, NULL); 1966 1967 if (intf->cur_altsetting->desc.bInterfaceSubClass == 1968 UVC_SC_VIDEOSTREAMING) 1969 return; 1970 1971 uvc_unregister_video(dev); 1972} 1973 1974static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 1975{ 1976 struct uvc_device *dev = usb_get_intfdata(intf); 1977 struct uvc_streaming *stream; 1978 1979 uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", 1980 intf->cur_altsetting->desc.bInterfaceNumber); 1981 1982 /* Controls are cached on the fly so they don't need to be saved. */ 1983 if (intf->cur_altsetting->desc.bInterfaceSubClass == 1984 UVC_SC_VIDEOCONTROL) { 1985 mutex_lock(&dev->lock); 1986 if (dev->users) 1987 uvc_status_stop(dev); 1988 mutex_unlock(&dev->lock); 1989 return 0; 1990 } 1991 1992 list_for_each_entry(stream, &dev->streams, list) { 1993 if (stream->intf == intf) 1994 return uvc_video_suspend(stream); 1995 } 1996 1997 uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " 1998 "mismatch.\n"); 1999 return -EINVAL; 2000} 2001 2002static int __uvc_resume(struct usb_interface *intf, int reset) 2003{ 2004 struct uvc_device *dev = usb_get_intfdata(intf); 2005 struct uvc_streaming *stream; 2006 int ret = 0; 2007 2008 uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", 2009 intf->cur_altsetting->desc.bInterfaceNumber); 2010 2011 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2012 UVC_SC_VIDEOCONTROL) { 2013 if (reset) { 2014 ret = uvc_ctrl_restore_values(dev); 2015 if (ret < 0) 2016 return ret; 2017 } 2018 2019 mutex_lock(&dev->lock); 2020 if (dev->users) 2021 ret = uvc_status_start(dev, GFP_NOIO); 2022 mutex_unlock(&dev->lock); 2023 2024 return ret; 2025 } 2026 2027 list_for_each_entry(stream, &dev->streams, list) { 2028 if (stream->intf == intf) { 2029 ret = uvc_video_resume(stream, reset); 2030 if (ret < 0) 2031 uvc_queue_streamoff(&stream->queue, 2032 stream->queue.queue.type); 2033 return ret; 2034 } 2035 } 2036 2037 uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " 2038 "mismatch.\n"); 2039 return -EINVAL; 2040} 2041 2042static int uvc_resume(struct usb_interface *intf) 2043{ 2044 return __uvc_resume(intf, 0); 2045} 2046 2047static int uvc_reset_resume(struct usb_interface *intf) 2048{ 2049 return __uvc_resume(intf, 1); 2050} 2051 2052/* ------------------------------------------------------------------------ 2053 * Module parameters 2054 */ 2055 2056static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) 2057{ 2058 if (uvc_clock_param == CLOCK_MONOTONIC) 2059 return sprintf(buffer, "CLOCK_MONOTONIC"); 2060 else 2061 return sprintf(buffer, "CLOCK_REALTIME"); 2062} 2063 2064static int uvc_clock_param_set(const char *val, struct kernel_param *kp) 2065{ 2066 if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 2067 val += strlen("clock_"); 2068 2069 if (strcasecmp(val, "monotonic") == 0) 2070 uvc_clock_param = CLOCK_MONOTONIC; 2071 else if (strcasecmp(val, "realtime") == 0) 2072 uvc_clock_param = CLOCK_REALTIME; 2073 else 2074 return -EINVAL; 2075 2076 return 0; 2077} 2078 2079module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 2080 &uvc_clock_param, S_IRUGO|S_IWUSR); 2081MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 2082module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR); 2083MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); 2084module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); 2085MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 2086module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); 2087MODULE_PARM_DESC(quirks, "Forced device quirks"); 2088module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); 2089MODULE_PARM_DESC(trace, "Trace level bitmask"); 2090module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); 2091MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 2092 2093/* ------------------------------------------------------------------------ 2094 * Driver initialization and cleanup 2095 */ 2096 2097/* 2098 * The Logitech cameras listed below have their interface class set to 2099 * VENDOR_SPEC because they don't announce themselves as UVC devices, even 2100 * though they are compliant. 2101 */ 2102static struct usb_device_id uvc_ids[] = { 2103 /* LogiLink Wireless Webcam */ 2104 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2105 | USB_DEVICE_ID_MATCH_INT_INFO, 2106 .idVendor = 0x0416, 2107 .idProduct = 0xa91a, 2108 .bInterfaceClass = USB_CLASS_VIDEO, 2109 .bInterfaceSubClass = 1, 2110 .bInterfaceProtocol = 0, 2111 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2112 /* Genius eFace 2025 */ 2113 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2114 | USB_DEVICE_ID_MATCH_INT_INFO, 2115 .idVendor = 0x0458, 2116 .idProduct = 0x706e, 2117 .bInterfaceClass = USB_CLASS_VIDEO, 2118 .bInterfaceSubClass = 1, 2119 .bInterfaceProtocol = 0, 2120 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2121 /* Microsoft Lifecam NX-6000 */ 2122 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2123 | USB_DEVICE_ID_MATCH_INT_INFO, 2124 .idVendor = 0x045e, 2125 .idProduct = 0x00f8, 2126 .bInterfaceClass = USB_CLASS_VIDEO, 2127 .bInterfaceSubClass = 1, 2128 .bInterfaceProtocol = 0, 2129 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2130 /* Microsoft Lifecam NX-3000 */ 2131 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2132 | USB_DEVICE_ID_MATCH_INT_INFO, 2133 .idVendor = 0x045e, 2134 .idProduct = 0x0721, 2135 .bInterfaceClass = USB_CLASS_VIDEO, 2136 .bInterfaceSubClass = 1, 2137 .bInterfaceProtocol = 0, 2138 .driver_info = UVC_QUIRK_PROBE_DEF }, 2139 /* Microsoft Lifecam VX-7000 */ 2140 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2141 | USB_DEVICE_ID_MATCH_INT_INFO, 2142 .idVendor = 0x045e, 2143 .idProduct = 0x0723, 2144 .bInterfaceClass = USB_CLASS_VIDEO, 2145 .bInterfaceSubClass = 1, 2146 .bInterfaceProtocol = 0, 2147 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2148 /* Logitech Quickcam Fusion */ 2149 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2150 | USB_DEVICE_ID_MATCH_INT_INFO, 2151 .idVendor = 0x046d, 2152 .idProduct = 0x08c1, 2153 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2154 .bInterfaceSubClass = 1, 2155 .bInterfaceProtocol = 0 }, 2156 /* Logitech Quickcam Orbit MP */ 2157 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2158 | USB_DEVICE_ID_MATCH_INT_INFO, 2159 .idVendor = 0x046d, 2160 .idProduct = 0x08c2, 2161 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2162 .bInterfaceSubClass = 1, 2163 .bInterfaceProtocol = 0 }, 2164 /* Logitech Quickcam Pro for Notebook */ 2165 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2166 | USB_DEVICE_ID_MATCH_INT_INFO, 2167 .idVendor = 0x046d, 2168 .idProduct = 0x08c3, 2169 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2170 .bInterfaceSubClass = 1, 2171 .bInterfaceProtocol = 0 }, 2172 /* Logitech Quickcam Pro 5000 */ 2173 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2174 | USB_DEVICE_ID_MATCH_INT_INFO, 2175 .idVendor = 0x046d, 2176 .idProduct = 0x08c5, 2177 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2178 .bInterfaceSubClass = 1, 2179 .bInterfaceProtocol = 0 }, 2180 /* Logitech Quickcam OEM Dell Notebook */ 2181 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2182 | USB_DEVICE_ID_MATCH_INT_INFO, 2183 .idVendor = 0x046d, 2184 .idProduct = 0x08c6, 2185 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2186 .bInterfaceSubClass = 1, 2187 .bInterfaceProtocol = 0 }, 2188 /* Logitech Quickcam OEM Cisco VT Camera II */ 2189 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2190 | USB_DEVICE_ID_MATCH_INT_INFO, 2191 .idVendor = 0x046d, 2192 .idProduct = 0x08c7, 2193 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2194 .bInterfaceSubClass = 1, 2195 .bInterfaceProtocol = 0 }, 2196 /* Logitech HD Pro Webcam C920 */ 2197 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2198 | USB_DEVICE_ID_MATCH_INT_INFO, 2199 .idVendor = 0x046d, 2200 .idProduct = 0x082d, 2201 .bInterfaceClass = USB_CLASS_VIDEO, 2202 .bInterfaceSubClass = 1, 2203 .bInterfaceProtocol = 0, 2204 .driver_info = UVC_QUIRK_RESTORE_CTRLS_ON_INIT }, 2205 /* Chicony CNF7129 (Asus EEE 100HE) */ 2206 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2207 | USB_DEVICE_ID_MATCH_INT_INFO, 2208 .idVendor = 0x04f2, 2209 .idProduct = 0xb071, 2210 .bInterfaceClass = USB_CLASS_VIDEO, 2211 .bInterfaceSubClass = 1, 2212 .bInterfaceProtocol = 0, 2213 .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE }, 2214 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2215 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2216 | USB_DEVICE_ID_MATCH_INT_INFO, 2217 .idVendor = 0x058f, 2218 .idProduct = 0x3820, 2219 .bInterfaceClass = USB_CLASS_VIDEO, 2220 .bInterfaceSubClass = 1, 2221 .bInterfaceProtocol = 0, 2222 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2223 /* Dell XPS m1530 */ 2224 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2225 | USB_DEVICE_ID_MATCH_INT_INFO, 2226 .idVendor = 0x05a9, 2227 .idProduct = 0x2640, 2228 .bInterfaceClass = USB_CLASS_VIDEO, 2229 .bInterfaceSubClass = 1, 2230 .bInterfaceProtocol = 0, 2231 .driver_info = UVC_QUIRK_PROBE_DEF }, 2232 /* Dell SP2008WFP Monitor */ 2233 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2234 | USB_DEVICE_ID_MATCH_INT_INFO, 2235 .idVendor = 0x05a9, 2236 .idProduct = 0x2641, 2237 .bInterfaceClass = USB_CLASS_VIDEO, 2238 .bInterfaceSubClass = 1, 2239 .bInterfaceProtocol = 0, 2240 .driver_info = UVC_QUIRK_PROBE_DEF }, 2241 /* Dell Alienware X51 */ 2242 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2243 | USB_DEVICE_ID_MATCH_INT_INFO, 2244 .idVendor = 0x05a9, 2245 .idProduct = 0x2643, 2246 .bInterfaceClass = USB_CLASS_VIDEO, 2247 .bInterfaceSubClass = 1, 2248 .bInterfaceProtocol = 0, 2249 .driver_info = UVC_QUIRK_PROBE_DEF }, 2250 /* Dell Studio Hybrid 140g (OmniVision webcam) */ 2251 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2252 | USB_DEVICE_ID_MATCH_INT_INFO, 2253 .idVendor = 0x05a9, 2254 .idProduct = 0x264a, 2255 .bInterfaceClass = USB_CLASS_VIDEO, 2256 .bInterfaceSubClass = 1, 2257 .bInterfaceProtocol = 0, 2258 .driver_info = UVC_QUIRK_PROBE_DEF }, 2259 /* Dell XPS M1330 (OmniVision OV7670 webcam) */ 2260 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2261 | USB_DEVICE_ID_MATCH_INT_INFO, 2262 .idVendor = 0x05a9, 2263 .idProduct = 0x7670, 2264 .bInterfaceClass = USB_CLASS_VIDEO, 2265 .bInterfaceSubClass = 1, 2266 .bInterfaceProtocol = 0, 2267 .driver_info = UVC_QUIRK_PROBE_DEF }, 2268 /* Apple Built-In iSight */ 2269 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2270 | USB_DEVICE_ID_MATCH_INT_INFO, 2271 .idVendor = 0x05ac, 2272 .idProduct = 0x8501, 2273 .bInterfaceClass = USB_CLASS_VIDEO, 2274 .bInterfaceSubClass = 1, 2275 .bInterfaceProtocol = 0, 2276 .driver_info = UVC_QUIRK_PROBE_MINMAX 2277 | UVC_QUIRK_BUILTIN_ISIGHT }, 2278 /* Foxlink ("HP Webcam" on HP Mini 5103) */ 2279 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2280 | USB_DEVICE_ID_MATCH_INT_INFO, 2281 .idVendor = 0x05c8, 2282 .idProduct = 0x0403, 2283 .bInterfaceClass = USB_CLASS_VIDEO, 2284 .bInterfaceSubClass = 1, 2285 .bInterfaceProtocol = 0, 2286 .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2287 /* Genesys Logic USB 2.0 PC Camera */ 2288 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2289 | USB_DEVICE_ID_MATCH_INT_INFO, 2290 .idVendor = 0x05e3, 2291 .idProduct = 0x0505, 2292 .bInterfaceClass = USB_CLASS_VIDEO, 2293 .bInterfaceSubClass = 1, 2294 .bInterfaceProtocol = 0, 2295 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2296 /* Hercules Classic Silver */ 2297 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2298 | USB_DEVICE_ID_MATCH_INT_INFO, 2299 .idVendor = 0x06f8, 2300 .idProduct = 0x300c, 2301 .bInterfaceClass = USB_CLASS_VIDEO, 2302 .bInterfaceSubClass = 1, 2303 .bInterfaceProtocol = 0, 2304 .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2305 /* ViMicro Vega */ 2306 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2307 | USB_DEVICE_ID_MATCH_INT_INFO, 2308 .idVendor = 0x0ac8, 2309 .idProduct = 0x332d, 2310 .bInterfaceClass = USB_CLASS_VIDEO, 2311 .bInterfaceSubClass = 1, 2312 .bInterfaceProtocol = 0, 2313 .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2314 /* ViMicro - Minoru3D */ 2315 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2316 | USB_DEVICE_ID_MATCH_INT_INFO, 2317 .idVendor = 0x0ac8, 2318 .idProduct = 0x3410, 2319 .bInterfaceClass = USB_CLASS_VIDEO, 2320 .bInterfaceSubClass = 1, 2321 .bInterfaceProtocol = 0, 2322 .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2323 /* ViMicro Venus - Minoru3D */ 2324 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2325 | USB_DEVICE_ID_MATCH_INT_INFO, 2326 .idVendor = 0x0ac8, 2327 .idProduct = 0x3420, 2328 .bInterfaceClass = USB_CLASS_VIDEO, 2329 .bInterfaceSubClass = 1, 2330 .bInterfaceProtocol = 0, 2331 .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, 2332 /* Ophir Optronics - SPCAM 620U */ 2333 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2334 | USB_DEVICE_ID_MATCH_INT_INFO, 2335 .idVendor = 0x0bd3, 2336 .idProduct = 0x0555, 2337 .bInterfaceClass = USB_CLASS_VIDEO, 2338 .bInterfaceSubClass = 1, 2339 .bInterfaceProtocol = 0, 2340 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2341 /* MT6227 */ 2342 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2343 | USB_DEVICE_ID_MATCH_INT_INFO, 2344 .idVendor = 0x0e8d, 2345 .idProduct = 0x0004, 2346 .bInterfaceClass = USB_CLASS_VIDEO, 2347 .bInterfaceSubClass = 1, 2348 .bInterfaceProtocol = 0, 2349 .driver_info = UVC_QUIRK_PROBE_MINMAX 2350 | UVC_QUIRK_PROBE_DEF }, 2351 /* IMC Networks (Medion Akoya) */ 2352 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2353 | USB_DEVICE_ID_MATCH_INT_INFO, 2354 .idVendor = 0x13d3, 2355 .idProduct = 0x5103, 2356 .bInterfaceClass = USB_CLASS_VIDEO, 2357 .bInterfaceSubClass = 1, 2358 .bInterfaceProtocol = 0, 2359 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2360 /* JMicron USB2.0 XGA WebCam */ 2361 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2362 | USB_DEVICE_ID_MATCH_INT_INFO, 2363 .idVendor = 0x152d, 2364 .idProduct = 0x0310, 2365 .bInterfaceClass = USB_CLASS_VIDEO, 2366 .bInterfaceSubClass = 1, 2367 .bInterfaceProtocol = 0, 2368 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2369 /* Syntek (HP Spartan) */ 2370 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2371 | USB_DEVICE_ID_MATCH_INT_INFO, 2372 .idVendor = 0x174f, 2373 .idProduct = 0x5212, 2374 .bInterfaceClass = USB_CLASS_VIDEO, 2375 .bInterfaceSubClass = 1, 2376 .bInterfaceProtocol = 0, 2377 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2378 /* Syntek (Samsung Q310) */ 2379 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2380 | USB_DEVICE_ID_MATCH_INT_INFO, 2381 .idVendor = 0x174f, 2382 .idProduct = 0x5931, 2383 .bInterfaceClass = USB_CLASS_VIDEO, 2384 .bInterfaceSubClass = 1, 2385 .bInterfaceProtocol = 0, 2386 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2387 /* Syntek (Packard Bell EasyNote MX52 */ 2388 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2389 | USB_DEVICE_ID_MATCH_INT_INFO, 2390 .idVendor = 0x174f, 2391 .idProduct = 0x8a12, 2392 .bInterfaceClass = USB_CLASS_VIDEO, 2393 .bInterfaceSubClass = 1, 2394 .bInterfaceProtocol = 0, 2395 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2396 /* Syntek (Asus F9SG) */ 2397 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2398 | USB_DEVICE_ID_MATCH_INT_INFO, 2399 .idVendor = 0x174f, 2400 .idProduct = 0x8a31, 2401 .bInterfaceClass = USB_CLASS_VIDEO, 2402 .bInterfaceSubClass = 1, 2403 .bInterfaceProtocol = 0, 2404 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2405 /* Syntek (Asus U3S) */ 2406 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2407 | USB_DEVICE_ID_MATCH_INT_INFO, 2408 .idVendor = 0x174f, 2409 .idProduct = 0x8a33, 2410 .bInterfaceClass = USB_CLASS_VIDEO, 2411 .bInterfaceSubClass = 1, 2412 .bInterfaceProtocol = 0, 2413 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2414 /* Syntek (JAOtech Smart Terminal) */ 2415 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2416 | USB_DEVICE_ID_MATCH_INT_INFO, 2417 .idVendor = 0x174f, 2418 .idProduct = 0x8a34, 2419 .bInterfaceClass = USB_CLASS_VIDEO, 2420 .bInterfaceSubClass = 1, 2421 .bInterfaceProtocol = 0, 2422 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2423 /* Miricle 307K */ 2424 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2425 | USB_DEVICE_ID_MATCH_INT_INFO, 2426 .idVendor = 0x17dc, 2427 .idProduct = 0x0202, 2428 .bInterfaceClass = USB_CLASS_VIDEO, 2429 .bInterfaceSubClass = 1, 2430 .bInterfaceProtocol = 0, 2431 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2432 /* Lenovo Thinkpad SL400/SL500 */ 2433 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2434 | USB_DEVICE_ID_MATCH_INT_INFO, 2435 .idVendor = 0x17ef, 2436 .idProduct = 0x480b, 2437 .bInterfaceClass = USB_CLASS_VIDEO, 2438 .bInterfaceSubClass = 1, 2439 .bInterfaceProtocol = 0, 2440 .driver_info = UVC_QUIRK_STREAM_NO_FID }, 2441 /* Aveo Technology USB 2.0 Camera */ 2442 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2443 | USB_DEVICE_ID_MATCH_INT_INFO, 2444 .idVendor = 0x1871, 2445 .idProduct = 0x0306, 2446 .bInterfaceClass = USB_CLASS_VIDEO, 2447 .bInterfaceSubClass = 1, 2448 .bInterfaceProtocol = 0, 2449 .driver_info = UVC_QUIRK_PROBE_MINMAX 2450 | UVC_QUIRK_PROBE_EXTRAFIELDS }, 2451 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ 2452 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2453 | USB_DEVICE_ID_MATCH_INT_INFO, 2454 .idVendor = 0x1871, 2455 .idProduct = 0x0516, 2456 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2457 .bInterfaceSubClass = 1, 2458 .bInterfaceProtocol = 0 }, 2459 /* Ecamm Pico iMage */ 2460 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2461 | USB_DEVICE_ID_MATCH_INT_INFO, 2462 .idVendor = 0x18cd, 2463 .idProduct = 0xcafe, 2464 .bInterfaceClass = USB_CLASS_VIDEO, 2465 .bInterfaceSubClass = 1, 2466 .bInterfaceProtocol = 0, 2467 .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, 2468 /* Manta MM-353 Plako */ 2469 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2470 | USB_DEVICE_ID_MATCH_INT_INFO, 2471 .idVendor = 0x18ec, 2472 .idProduct = 0x3188, 2473 .bInterfaceClass = USB_CLASS_VIDEO, 2474 .bInterfaceSubClass = 1, 2475 .bInterfaceProtocol = 0, 2476 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2477 /* FSC WebCam V30S */ 2478 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2479 | USB_DEVICE_ID_MATCH_INT_INFO, 2480 .idVendor = 0x18ec, 2481 .idProduct = 0x3288, 2482 .bInterfaceClass = USB_CLASS_VIDEO, 2483 .bInterfaceSubClass = 1, 2484 .bInterfaceProtocol = 0, 2485 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2486 /* Arkmicro unbranded */ 2487 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2488 | USB_DEVICE_ID_MATCH_INT_INFO, 2489 .idVendor = 0x18ec, 2490 .idProduct = 0x3290, 2491 .bInterfaceClass = USB_CLASS_VIDEO, 2492 .bInterfaceSubClass = 1, 2493 .bInterfaceProtocol = 0, 2494 .driver_info = UVC_QUIRK_PROBE_DEF }, 2495 /* The Imaging Source USB CCD cameras */ 2496 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2497 | USB_DEVICE_ID_MATCH_INT_INFO, 2498 .idVendor = 0x199e, 2499 .idProduct = 0x8102, 2500 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2501 .bInterfaceSubClass = 1, 2502 .bInterfaceProtocol = 0 }, 2503 /* Bodelin ProScopeHR */ 2504 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2505 | USB_DEVICE_ID_MATCH_DEV_HI 2506 | USB_DEVICE_ID_MATCH_INT_INFO, 2507 .idVendor = 0x19ab, 2508 .idProduct = 0x1000, 2509 .bcdDevice_hi = 0x0126, 2510 .bInterfaceClass = USB_CLASS_VIDEO, 2511 .bInterfaceSubClass = 1, 2512 .bInterfaceProtocol = 0, 2513 .driver_info = UVC_QUIRK_STATUS_INTERVAL }, 2514 /* MSI StarCam 370i */ 2515 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2516 | USB_DEVICE_ID_MATCH_INT_INFO, 2517 .idVendor = 0x1b3b, 2518 .idProduct = 0x2951, 2519 .bInterfaceClass = USB_CLASS_VIDEO, 2520 .bInterfaceSubClass = 1, 2521 .bInterfaceProtocol = 0, 2522 .driver_info = UVC_QUIRK_PROBE_MINMAX }, 2523 /* SiGma Micro USB Web Camera */ 2524 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2525 | USB_DEVICE_ID_MATCH_INT_INFO, 2526 .idVendor = 0x1c4f, 2527 .idProduct = 0x3000, 2528 .bInterfaceClass = USB_CLASS_VIDEO, 2529 .bInterfaceSubClass = 1, 2530 .bInterfaceProtocol = 0, 2531 .driver_info = UVC_QUIRK_PROBE_MINMAX 2532 | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, 2533 /* Oculus VR Positional Tracker DK2 */ 2534 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2535 | USB_DEVICE_ID_MATCH_INT_INFO, 2536 .idVendor = 0x2833, 2537 .idProduct = 0x0201, 2538 .bInterfaceClass = USB_CLASS_VIDEO, 2539 .bInterfaceSubClass = 1, 2540 .bInterfaceProtocol = 0, 2541 .driver_info = UVC_QUIRK_FORCE_Y8 }, 2542 /* Generic USB Video Class */ 2543 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, 2544 {} 2545}; 2546 2547MODULE_DEVICE_TABLE(usb, uvc_ids); 2548 2549struct uvc_driver uvc_driver = { 2550 .driver = { 2551 .name = "uvcvideo", 2552 .probe = uvc_probe, 2553 .disconnect = uvc_disconnect, 2554 .suspend = uvc_suspend, 2555 .resume = uvc_resume, 2556 .reset_resume = uvc_reset_resume, 2557 .id_table = uvc_ids, 2558 .supports_autosuspend = 1, 2559 }, 2560}; 2561 2562static int __init uvc_init(void) 2563{ 2564 int ret; 2565 2566 uvc_debugfs_init(); 2567 2568 ret = usb_register(&uvc_driver.driver); 2569 if (ret < 0) { 2570 uvc_debugfs_cleanup(); 2571 return ret; 2572 } 2573 2574 printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); 2575 return 0; 2576} 2577 2578static void __exit uvc_cleanup(void) 2579{ 2580 usb_deregister(&uvc_driver.driver); 2581 uvc_debugfs_cleanup(); 2582} 2583 2584module_init(uvc_init); 2585module_exit(uvc_cleanup); 2586 2587MODULE_AUTHOR(DRIVER_AUTHOR); 2588MODULE_DESCRIPTION(DRIVER_DESC); 2589MODULE_LICENSE("GPL"); 2590MODULE_VERSION(DRIVER_VERSION); 2591 2592