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/gpio/consumer.h> 11 #include <linux/kernel.h> 12 #include <linux/list.h> 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/usb.h> 16 #include <linux/videodev2.h> 17 #include <linux/vmalloc.h> 18 #include <linux/wait.h> 19 #include <linux/version.h> 20 #include <asm/unaligned.h> 21 22 #include <media/v4l2-common.h> 23 #include <media/v4l2-ioctl.h> 24 25 #include "uvcvideo.h" 26 27 #define DRIVER_AUTHOR "Laurent Pinchart " \ 28 "<laurent.pinchart@ideasonboard.com>" 29 #define DRIVER_DESC "USB Video Class driver" 30 31 unsigned int uvc_clock_param = CLOCK_MONOTONIC; 32 unsigned int uvc_hw_timestamps_param; 33 unsigned int uvc_no_drop_param; 34 static unsigned int uvc_quirks_param = -1; 35 unsigned int uvc_dbg_param; 36 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; 37 38 /* ------------------------------------------------------------------------ 39 * Video formats 40 */ 41 42 static struct uvc_format_desc uvc_fmts[] = { 43 { 44 .name = "YUV 4:2:2 (YUYV)", 45 .guid = UVC_GUID_FORMAT_YUY2, 46 .fcc = V4L2_PIX_FMT_YUYV, 47 }, 48 { 49 .name = "YUV 4:2:2 (YUYV)", 50 .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, 51 .fcc = V4L2_PIX_FMT_YUYV, 52 }, 53 { 54 .name = "YUV 4:2:0 (NV12)", 55 .guid = UVC_GUID_FORMAT_NV12, 56 .fcc = V4L2_PIX_FMT_NV12, 57 }, 58 { 59 .name = "MJPEG", 60 .guid = UVC_GUID_FORMAT_MJPEG, 61 .fcc = V4L2_PIX_FMT_MJPEG, 62 }, 63 { 64 .name = "YVU 4:2:0 (YV12)", 65 .guid = UVC_GUID_FORMAT_YV12, 66 .fcc = V4L2_PIX_FMT_YVU420, 67 }, 68 { 69 .name = "YUV 4:2:0 (I420)", 70 .guid = UVC_GUID_FORMAT_I420, 71 .fcc = V4L2_PIX_FMT_YUV420, 72 }, 73 { 74 .name = "YUV 4:2:0 (M420)", 75 .guid = UVC_GUID_FORMAT_M420, 76 .fcc = V4L2_PIX_FMT_M420, 77 }, 78 { 79 .name = "YUV 4:2:2 (UYVY)", 80 .guid = UVC_GUID_FORMAT_UYVY, 81 .fcc = V4L2_PIX_FMT_UYVY, 82 }, 83 { 84 .name = "Greyscale 8-bit (Y800)", 85 .guid = UVC_GUID_FORMAT_Y800, 86 .fcc = V4L2_PIX_FMT_GREY, 87 }, 88 { 89 .name = "Greyscale 8-bit (Y8 )", 90 .guid = UVC_GUID_FORMAT_Y8, 91 .fcc = V4L2_PIX_FMT_GREY, 92 }, 93 { 94 .name = "Greyscale 8-bit (D3DFMT_L8)", 95 .guid = UVC_GUID_FORMAT_D3DFMT_L8, 96 .fcc = V4L2_PIX_FMT_GREY, 97 }, 98 { 99 .name = "IR 8-bit (L8_IR)", 100 .guid = UVC_GUID_FORMAT_KSMEDIA_L8_IR, 101 .fcc = V4L2_PIX_FMT_GREY, 102 }, 103 { 104 .name = "Greyscale 10-bit (Y10 )", 105 .guid = UVC_GUID_FORMAT_Y10, 106 .fcc = V4L2_PIX_FMT_Y10, 107 }, 108 { 109 .name = "Greyscale 12-bit (Y12 )", 110 .guid = UVC_GUID_FORMAT_Y12, 111 .fcc = V4L2_PIX_FMT_Y12, 112 }, 113 { 114 .name = "Greyscale 16-bit (Y16 )", 115 .guid = UVC_GUID_FORMAT_Y16, 116 .fcc = V4L2_PIX_FMT_Y16, 117 }, 118 { 119 .name = "BGGR Bayer (BY8 )", 120 .guid = UVC_GUID_FORMAT_BY8, 121 .fcc = V4L2_PIX_FMT_SBGGR8, 122 }, 123 { 124 .name = "BGGR Bayer (BA81)", 125 .guid = UVC_GUID_FORMAT_BA81, 126 .fcc = V4L2_PIX_FMT_SBGGR8, 127 }, 128 { 129 .name = "GBRG Bayer (GBRG)", 130 .guid = UVC_GUID_FORMAT_GBRG, 131 .fcc = V4L2_PIX_FMT_SGBRG8, 132 }, 133 { 134 .name = "GRBG Bayer (GRBG)", 135 .guid = UVC_GUID_FORMAT_GRBG, 136 .fcc = V4L2_PIX_FMT_SGRBG8, 137 }, 138 { 139 .name = "RGGB Bayer (RGGB)", 140 .guid = UVC_GUID_FORMAT_RGGB, 141 .fcc = V4L2_PIX_FMT_SRGGB8, 142 }, 143 { 144 .name = "RGB565", 145 .guid = UVC_GUID_FORMAT_RGBP, 146 .fcc = V4L2_PIX_FMT_RGB565, 147 }, 148 { 149 .name = "BGR 8:8:8 (BGR3)", 150 .guid = UVC_GUID_FORMAT_BGR3, 151 .fcc = V4L2_PIX_FMT_BGR24, 152 }, 153 { 154 .name = "H.264", 155 .guid = UVC_GUID_FORMAT_H264, 156 .fcc = V4L2_PIX_FMT_H264, 157 }, 158 { 159 .name = "Greyscale 8 L/R (Y8I)", 160 .guid = UVC_GUID_FORMAT_Y8I, 161 .fcc = V4L2_PIX_FMT_Y8I, 162 }, 163 { 164 .name = "Greyscale 12 L/R (Y12I)", 165 .guid = UVC_GUID_FORMAT_Y12I, 166 .fcc = V4L2_PIX_FMT_Y12I, 167 }, 168 { 169 .name = "Depth data 16-bit (Z16)", 170 .guid = UVC_GUID_FORMAT_Z16, 171 .fcc = V4L2_PIX_FMT_Z16, 172 }, 173 { 174 .name = "Bayer 10-bit (SRGGB10P)", 175 .guid = UVC_GUID_FORMAT_RW10, 176 .fcc = V4L2_PIX_FMT_SRGGB10P, 177 }, 178 { 179 .name = "Bayer 16-bit (SBGGR16)", 180 .guid = UVC_GUID_FORMAT_BG16, 181 .fcc = V4L2_PIX_FMT_SBGGR16, 182 }, 183 { 184 .name = "Bayer 16-bit (SGBRG16)", 185 .guid = UVC_GUID_FORMAT_GB16, 186 .fcc = V4L2_PIX_FMT_SGBRG16, 187 }, 188 { 189 .name = "Bayer 16-bit (SRGGB16)", 190 .guid = UVC_GUID_FORMAT_RG16, 191 .fcc = V4L2_PIX_FMT_SRGGB16, 192 }, 193 { 194 .name = "Bayer 16-bit (SGRBG16)", 195 .guid = UVC_GUID_FORMAT_GR16, 196 .fcc = V4L2_PIX_FMT_SGRBG16, 197 }, 198 { 199 .name = "Depth data 16-bit (Z16)", 200 .guid = UVC_GUID_FORMAT_INVZ, 201 .fcc = V4L2_PIX_FMT_Z16, 202 }, 203 { 204 .name = "Greyscale 10-bit (Y10 )", 205 .guid = UVC_GUID_FORMAT_INVI, 206 .fcc = V4L2_PIX_FMT_Y10, 207 }, 208 { 209 .name = "IR:Depth 26-bit (INZI)", 210 .guid = UVC_GUID_FORMAT_INZI, 211 .fcc = V4L2_PIX_FMT_INZI, 212 }, 213 { 214 .name = "4-bit Depth Confidence (Packed)", 215 .guid = UVC_GUID_FORMAT_CNF4, 216 .fcc = V4L2_PIX_FMT_CNF4, 217 }, 218 { 219 .name = "HEVC", 220 .guid = UVC_GUID_FORMAT_HEVC, 221 .fcc = V4L2_PIX_FMT_HEVC, 222 }, 223 }; 224 225 /* ------------------------------------------------------------------------ 226 * Utility functions 227 */ 228 229 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, 230 u8 epaddr) 231 { 232 struct usb_host_endpoint *ep; 233 unsigned int i; 234 235 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 236 ep = &alts->endpoint[i]; 237 if (ep->desc.bEndpointAddress == epaddr) 238 return ep; 239 } 240 241 return NULL; 242 } 243 244 static struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16]) 245 { 246 unsigned int len = ARRAY_SIZE(uvc_fmts); 247 unsigned int i; 248 249 for (i = 0; i < len; ++i) { 250 if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) 251 return &uvc_fmts[i]; 252 } 253 254 return NULL; 255 } 256 257 static enum v4l2_colorspace uvc_colorspace(const u8 primaries) 258 { 259 static const enum v4l2_colorspace colorprimaries[] = { 260 V4L2_COLORSPACE_DEFAULT, /* Unspecified */ 261 V4L2_COLORSPACE_SRGB, 262 V4L2_COLORSPACE_470_SYSTEM_M, 263 V4L2_COLORSPACE_470_SYSTEM_BG, 264 V4L2_COLORSPACE_SMPTE170M, 265 V4L2_COLORSPACE_SMPTE240M, 266 }; 267 268 if (primaries < ARRAY_SIZE(colorprimaries)) 269 return colorprimaries[primaries]; 270 271 return V4L2_COLORSPACE_DEFAULT; /* Reserved */ 272 } 273 274 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics) 275 { 276 /* 277 * V4L2 does not currently have definitions for all possible values of 278 * UVC transfer characteristics. If v4l2_xfer_func is extended with new 279 * values, the mapping below should be updated. 280 * 281 * Substitutions are taken from the mapping given for 282 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h. 283 */ 284 static const enum v4l2_xfer_func xfer_funcs[] = { 285 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */ 286 V4L2_XFER_FUNC_709, 287 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */ 288 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */ 289 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */ 290 V4L2_XFER_FUNC_SMPTE240M, 291 V4L2_XFER_FUNC_NONE, 292 V4L2_XFER_FUNC_SRGB, 293 }; 294 295 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs)) 296 return xfer_funcs[transfer_characteristics]; 297 298 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */ 299 } 300 301 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients) 302 { 303 /* 304 * V4L2 does not currently have definitions for all possible values of 305 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new 306 * values, the mapping below should be updated. 307 * 308 * Substitutions are taken from the mapping given for 309 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h. 310 * 311 * FCC is assumed to be close enough to 601. 312 */ 313 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = { 314 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */ 315 V4L2_YCBCR_ENC_709, 316 V4L2_YCBCR_ENC_601, /* Substitution for FCC */ 317 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */ 318 V4L2_YCBCR_ENC_601, 319 V4L2_YCBCR_ENC_SMPTE240M, 320 }; 321 322 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs)) 323 return ycbcr_encs[matrix_coefficients]; 324 325 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */ 326 } 327 328 /* Simplify a fraction using a simple continued fraction decomposition. The 329 * idea here is to convert fractions such as 333333/10000000 to 1/30 using 330 * 32 bit arithmetic only. The algorithm is not perfect and relies upon two 331 * arbitrary parameters to remove non-significative terms from the simple 332 * continued fraction decomposition. Using 8 and 333 for n_terms and threshold 333 * respectively seems to give nice results. 334 */ 335 void uvc_simplify_fraction(u32 *numerator, u32 *denominator, 336 unsigned int n_terms, unsigned int threshold) 337 { 338 u32 *an; 339 u32 x, y, r; 340 unsigned int i, n; 341 342 an = kmalloc_array(n_terms, sizeof(*an), GFP_KERNEL); 343 if (an == NULL) 344 return; 345 346 /* Convert the fraction to a simple continued fraction. See 347 * https://mathforum.org/dr.math/faq/faq.fractions.html 348 * Stop if the current term is bigger than or equal to the given 349 * threshold. 350 */ 351 x = *numerator; 352 y = *denominator; 353 354 for (n = 0; n < n_terms && y != 0; ++n) { 355 an[n] = x / y; 356 if (an[n] >= threshold) { 357 if (n < 2) 358 n++; 359 break; 360 } 361 362 r = x - an[n] * y; 363 x = y; 364 y = r; 365 } 366 367 /* Expand the simple continued fraction back to an integer fraction. */ 368 x = 0; 369 y = 1; 370 371 for (i = n; i > 0; --i) { 372 r = y; 373 y = an[i-1] * y + x; 374 x = r; 375 } 376 377 *numerator = y; 378 *denominator = x; 379 kfree(an); 380 } 381 382 /* Convert a fraction to a frame interval in 100ns multiples. The idea here is 383 * to compute numerator / denominator * 10000000 using 32 bit fixed point 384 * arithmetic only. 385 */ 386 u32 uvc_fraction_to_interval(u32 numerator, u32 denominator) 387 { 388 u32 multiplier; 389 390 /* Saturate the result if the operation would overflow. */ 391 if (denominator == 0 || 392 numerator/denominator >= ((u32)-1)/10000000) 393 return (u32)-1; 394 395 /* Divide both the denominator and the multiplier by two until 396 * numerator * multiplier doesn't overflow. If anyone knows a better 397 * algorithm please let me know. 398 */ 399 multiplier = 10000000; 400 while (numerator > ((u32)-1)/multiplier) { 401 multiplier /= 2; 402 denominator /= 2; 403 } 404 405 return denominator ? numerator * multiplier / denominator : 0; 406 } 407 408 /* ------------------------------------------------------------------------ 409 * Terminal and unit management 410 */ 411 412 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) 413 { 414 struct uvc_entity *entity; 415 416 list_for_each_entry(entity, &dev->entities, list) { 417 if (entity->id == id) 418 return entity; 419 } 420 421 return NULL; 422 } 423 424 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, 425 int id, struct uvc_entity *entity) 426 { 427 unsigned int i; 428 429 if (entity == NULL) 430 entity = list_entry(&dev->entities, struct uvc_entity, list); 431 432 list_for_each_entry_continue(entity, &dev->entities, list) { 433 for (i = 0; i < entity->bNrInPins; ++i) 434 if (entity->baSourceID[i] == id) 435 return entity; 436 } 437 438 return NULL; 439 } 440 441 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) 442 { 443 struct uvc_streaming *stream; 444 445 list_for_each_entry(stream, &dev->streams, list) { 446 if (stream->header.bTerminalLink == id) 447 return stream; 448 } 449 450 return NULL; 451 } 452 453 /* ------------------------------------------------------------------------ 454 * Streaming Object Management 455 */ 456 457 static void uvc_stream_delete(struct uvc_streaming *stream) 458 { 459 if (stream->async_wq) 460 destroy_workqueue(stream->async_wq); 461 462 mutex_destroy(&stream->mutex); 463 464 usb_put_intf(stream->intf); 465 466 kfree(stream->format); 467 kfree(stream->header.bmaControls); 468 kfree(stream); 469 } 470 471 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev, 472 struct usb_interface *intf) 473 { 474 struct uvc_streaming *stream; 475 476 stream = kzalloc(sizeof(*stream), GFP_KERNEL); 477 if (stream == NULL) 478 return NULL; 479 480 mutex_init(&stream->mutex); 481 482 stream->dev = dev; 483 stream->intf = usb_get_intf(intf); 484 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 485 486 /* Allocate a stream specific work queue for asynchronous tasks. */ 487 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI, 488 0); 489 if (!stream->async_wq) { 490 uvc_stream_delete(stream); 491 return NULL; 492 } 493 494 return stream; 495 } 496 497 /* ------------------------------------------------------------------------ 498 * Descriptors parsing 499 */ 500 501 static int uvc_parse_format(struct uvc_device *dev, 502 struct uvc_streaming *streaming, struct uvc_format *format, 503 u32 **intervals, unsigned char *buffer, int buflen) 504 { 505 struct usb_interface *intf = streaming->intf; 506 struct usb_host_interface *alts = intf->cur_altsetting; 507 struct uvc_format_desc *fmtdesc; 508 struct uvc_frame *frame; 509 const unsigned char *start = buffer; 510 unsigned int width_multiplier = 1; 511 unsigned int interval; 512 unsigned int i, n; 513 u8 ftype; 514 515 format->type = buffer[2]; 516 format->index = buffer[3]; 517 518 switch (buffer[2]) { 519 case UVC_VS_FORMAT_UNCOMPRESSED: 520 case UVC_VS_FORMAT_FRAME_BASED: 521 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; 522 if (buflen < n) { 523 uvc_dbg(dev, DESCR, 524 "device %d videostreaming interface %d FORMAT error\n", 525 dev->udev->devnum, 526 alts->desc.bInterfaceNumber); 527 return -EINVAL; 528 } 529 530 /* Find the format descriptor from its GUID. */ 531 fmtdesc = uvc_format_by_guid(&buffer[5]); 532 533 if (fmtdesc != NULL) { 534 strscpy(format->name, fmtdesc->name, 535 sizeof(format->name)); 536 format->fcc = fmtdesc->fcc; 537 } else { 538 dev_info(&streaming->intf->dev, 539 "Unknown video format %pUl\n", &buffer[5]); 540 snprintf(format->name, sizeof(format->name), "%pUl\n", 541 &buffer[5]); 542 format->fcc = 0; 543 } 544 545 format->bpp = buffer[21]; 546 547 /* Some devices report a format that doesn't match what they 548 * really send. 549 */ 550 if (dev->quirks & UVC_QUIRK_FORCE_Y8) { 551 if (format->fcc == V4L2_PIX_FMT_YUYV) { 552 strscpy(format->name, "Greyscale 8-bit (Y8 )", 553 sizeof(format->name)); 554 format->fcc = V4L2_PIX_FMT_GREY; 555 format->bpp = 8; 556 width_multiplier = 2; 557 } 558 } 559 560 /* Some devices report bpp that doesn't match the format. */ 561 if (dev->quirks & UVC_QUIRK_FORCE_BPP) { 562 const struct v4l2_format_info *info = 563 v4l2_format_info(format->fcc); 564 565 if (info) { 566 unsigned int div = info->hdiv * info->vdiv; 567 568 n = info->bpp[0] * div; 569 for (i = 1; i < info->comp_planes; i++) 570 n += info->bpp[i]; 571 572 format->bpp = DIV_ROUND_UP(8 * n, div); 573 } 574 } 575 576 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { 577 ftype = UVC_VS_FRAME_UNCOMPRESSED; 578 } else { 579 ftype = UVC_VS_FRAME_FRAME_BASED; 580 if (buffer[27]) 581 format->flags = UVC_FMT_FLAG_COMPRESSED; 582 } 583 break; 584 585 case UVC_VS_FORMAT_MJPEG: 586 if (buflen < 11) { 587 uvc_dbg(dev, DESCR, 588 "device %d videostreaming interface %d FORMAT error\n", 589 dev->udev->devnum, 590 alts->desc.bInterfaceNumber); 591 return -EINVAL; 592 } 593 594 strscpy(format->name, "MJPEG", sizeof(format->name)); 595 format->fcc = V4L2_PIX_FMT_MJPEG; 596 format->flags = UVC_FMT_FLAG_COMPRESSED; 597 format->bpp = 0; 598 ftype = UVC_VS_FRAME_MJPEG; 599 break; 600 601 case UVC_VS_FORMAT_DV: 602 if (buflen < 9) { 603 uvc_dbg(dev, DESCR, 604 "device %d videostreaming interface %d FORMAT error\n", 605 dev->udev->devnum, 606 alts->desc.bInterfaceNumber); 607 return -EINVAL; 608 } 609 610 switch (buffer[8] & 0x7f) { 611 case 0: 612 strscpy(format->name, "SD-DV", sizeof(format->name)); 613 break; 614 case 1: 615 strscpy(format->name, "SDL-DV", sizeof(format->name)); 616 break; 617 case 2: 618 strscpy(format->name, "HD-DV", sizeof(format->name)); 619 break; 620 default: 621 uvc_dbg(dev, DESCR, 622 "device %d videostreaming interface %d: unknown DV format %u\n", 623 dev->udev->devnum, 624 alts->desc.bInterfaceNumber, buffer[8]); 625 return -EINVAL; 626 } 627 628 strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", 629 sizeof(format->name)); 630 631 format->fcc = V4L2_PIX_FMT_DV; 632 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; 633 format->bpp = 0; 634 ftype = 0; 635 636 /* Create a dummy frame descriptor. */ 637 frame = &format->frame[0]; 638 memset(&format->frame[0], 0, sizeof(format->frame[0])); 639 frame->bFrameIntervalType = 1; 640 frame->dwDefaultFrameInterval = 1; 641 frame->dwFrameInterval = *intervals; 642 *(*intervals)++ = 1; 643 format->nframes = 1; 644 break; 645 646 case UVC_VS_FORMAT_MPEG2TS: 647 case UVC_VS_FORMAT_STREAM_BASED: 648 /* Not supported yet. */ 649 default: 650 uvc_dbg(dev, DESCR, 651 "device %d videostreaming interface %d unsupported format %u\n", 652 dev->udev->devnum, alts->desc.bInterfaceNumber, 653 buffer[2]); 654 return -EINVAL; 655 } 656 657 uvc_dbg(dev, DESCR, "Found format %s\n", format->name); 658 659 buflen -= buffer[0]; 660 buffer += buffer[0]; 661 662 /* Parse the frame descriptors. Only uncompressed, MJPEG and frame 663 * based formats have frame descriptors. 664 */ 665 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 666 buffer[2] == ftype) { 667 frame = &format->frame[format->nframes]; 668 if (ftype != UVC_VS_FRAME_FRAME_BASED) 669 n = buflen > 25 ? buffer[25] : 0; 670 else 671 n = buflen > 21 ? buffer[21] : 0; 672 673 n = n ? n : 3; 674 675 if (buflen < 26 + 4*n) { 676 uvc_dbg(dev, DESCR, 677 "device %d videostreaming interface %d FRAME error\n", 678 dev->udev->devnum, 679 alts->desc.bInterfaceNumber); 680 return -EINVAL; 681 } 682 683 frame->bFrameIndex = buffer[3]; 684 frame->bmCapabilities = buffer[4]; 685 frame->wWidth = get_unaligned_le16(&buffer[5]) 686 * width_multiplier; 687 frame->wHeight = get_unaligned_le16(&buffer[7]); 688 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); 689 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); 690 if (ftype != UVC_VS_FRAME_FRAME_BASED) { 691 frame->dwMaxVideoFrameBufferSize = 692 get_unaligned_le32(&buffer[17]); 693 frame->dwDefaultFrameInterval = 694 get_unaligned_le32(&buffer[21]); 695 frame->bFrameIntervalType = buffer[25]; 696 } else { 697 frame->dwMaxVideoFrameBufferSize = 0; 698 frame->dwDefaultFrameInterval = 699 get_unaligned_le32(&buffer[17]); 700 frame->bFrameIntervalType = buffer[21]; 701 } 702 frame->dwFrameInterval = *intervals; 703 704 /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize 705 * completely. Observed behaviours range from setting the 706 * value to 1.1x the actual frame size to hardwiring the 707 * 16 low bits to 0. This results in a higher than necessary 708 * memory usage as well as a wrong image size information. For 709 * uncompressed formats this can be fixed by computing the 710 * value from the frame size. 711 */ 712 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) 713 frame->dwMaxVideoFrameBufferSize = format->bpp 714 * frame->wWidth * frame->wHeight / 8; 715 716 /* Some bogus devices report dwMinFrameInterval equal to 717 * dwMaxFrameInterval and have dwFrameIntervalStep set to 718 * zero. Setting all null intervals to 1 fixes the problem and 719 * some other divisions by zero that could happen. 720 */ 721 for (i = 0; i < n; ++i) { 722 interval = get_unaligned_le32(&buffer[26+4*i]); 723 *(*intervals)++ = interval ? interval : 1; 724 } 725 726 /* Make sure that the default frame interval stays between 727 * the boundaries. 728 */ 729 n -= frame->bFrameIntervalType ? 1 : 2; 730 frame->dwDefaultFrameInterval = 731 min(frame->dwFrameInterval[n], 732 max(frame->dwFrameInterval[0], 733 frame->dwDefaultFrameInterval)); 734 735 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { 736 frame->bFrameIntervalType = 1; 737 frame->dwFrameInterval[0] = 738 frame->dwDefaultFrameInterval; 739 } 740 741 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n", 742 frame->wWidth, frame->wHeight, 743 10000000 / frame->dwDefaultFrameInterval, 744 (100000000 / frame->dwDefaultFrameInterval) % 10); 745 746 format->nframes++; 747 buflen -= buffer[0]; 748 buffer += buffer[0]; 749 } 750 751 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 752 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { 753 buflen -= buffer[0]; 754 buffer += buffer[0]; 755 } 756 757 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && 758 buffer[2] == UVC_VS_COLORFORMAT) { 759 if (buflen < 6) { 760 uvc_dbg(dev, DESCR, 761 "device %d videostreaming interface %d COLORFORMAT error\n", 762 dev->udev->devnum, 763 alts->desc.bInterfaceNumber); 764 return -EINVAL; 765 } 766 767 format->colorspace = uvc_colorspace(buffer[3]); 768 format->xfer_func = uvc_xfer_func(buffer[4]); 769 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]); 770 771 buflen -= buffer[0]; 772 buffer += buffer[0]; 773 } 774 775 return buffer - start; 776 } 777 778 static int uvc_parse_streaming(struct uvc_device *dev, 779 struct usb_interface *intf) 780 { 781 struct uvc_streaming *streaming = NULL; 782 struct uvc_format *format; 783 struct uvc_frame *frame; 784 struct usb_host_interface *alts = &intf->altsetting[0]; 785 unsigned char *_buffer, *buffer = alts->extra; 786 int _buflen, buflen = alts->extralen; 787 unsigned int nformats = 0, nframes = 0, nintervals = 0; 788 unsigned int size, i, n, p; 789 u32 *interval; 790 u16 psize; 791 int ret = -EINVAL; 792 793 if (intf->cur_altsetting->desc.bInterfaceSubClass 794 != UVC_SC_VIDEOSTREAMING) { 795 uvc_dbg(dev, DESCR, 796 "device %d interface %d isn't a video streaming interface\n", 797 dev->udev->devnum, 798 intf->altsetting[0].desc.bInterfaceNumber); 799 return -EINVAL; 800 } 801 802 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { 803 uvc_dbg(dev, DESCR, 804 "device %d interface %d is already claimed\n", 805 dev->udev->devnum, 806 intf->altsetting[0].desc.bInterfaceNumber); 807 return -EINVAL; 808 } 809 810 streaming = uvc_stream_new(dev, intf); 811 if (streaming == NULL) { 812 usb_driver_release_interface(&uvc_driver.driver, intf); 813 return -ENOMEM; 814 } 815 816 /* The Pico iMage webcam has its class-specific interface descriptors 817 * after the endpoint descriptors. 818 */ 819 if (buflen == 0) { 820 for (i = 0; i < alts->desc.bNumEndpoints; ++i) { 821 struct usb_host_endpoint *ep = &alts->endpoint[i]; 822 823 if (ep->extralen == 0) 824 continue; 825 826 if (ep->extralen > 2 && 827 ep->extra[1] == USB_DT_CS_INTERFACE) { 828 uvc_dbg(dev, DESCR, 829 "trying extra data from endpoint %u\n", 830 i); 831 buffer = alts->endpoint[i].extra; 832 buflen = alts->endpoint[i].extralen; 833 break; 834 } 835 } 836 } 837 838 /* Skip the standard interface descriptors. */ 839 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { 840 buflen -= buffer[0]; 841 buffer += buffer[0]; 842 } 843 844 if (buflen <= 2) { 845 uvc_dbg(dev, DESCR, 846 "no class-specific streaming interface descriptors found\n"); 847 goto error; 848 } 849 850 /* Parse the header descriptor. */ 851 switch (buffer[2]) { 852 case UVC_VS_OUTPUT_HEADER: 853 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 854 size = 9; 855 break; 856 857 case UVC_VS_INPUT_HEADER: 858 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 859 size = 13; 860 break; 861 862 default: 863 uvc_dbg(dev, DESCR, 864 "device %d videostreaming interface %d HEADER descriptor not found\n", 865 dev->udev->devnum, alts->desc.bInterfaceNumber); 866 goto error; 867 } 868 869 p = buflen >= 4 ? buffer[3] : 0; 870 n = buflen >= size ? buffer[size-1] : 0; 871 872 if (buflen < size + p*n) { 873 uvc_dbg(dev, DESCR, 874 "device %d videostreaming interface %d HEADER descriptor is invalid\n", 875 dev->udev->devnum, alts->desc.bInterfaceNumber); 876 goto error; 877 } 878 879 streaming->header.bNumFormats = p; 880 streaming->header.bEndpointAddress = buffer[6]; 881 if (buffer[2] == UVC_VS_INPUT_HEADER) { 882 streaming->header.bmInfo = buffer[7]; 883 streaming->header.bTerminalLink = buffer[8]; 884 streaming->header.bStillCaptureMethod = buffer[9]; 885 streaming->header.bTriggerSupport = buffer[10]; 886 streaming->header.bTriggerUsage = buffer[11]; 887 } else { 888 streaming->header.bTerminalLink = buffer[7]; 889 } 890 streaming->header.bControlSize = n; 891 892 streaming->header.bmaControls = kmemdup(&buffer[size], p * n, 893 GFP_KERNEL); 894 if (streaming->header.bmaControls == NULL) { 895 ret = -ENOMEM; 896 goto error; 897 } 898 899 buflen -= buffer[0]; 900 buffer += buffer[0]; 901 902 _buffer = buffer; 903 _buflen = buflen; 904 905 /* Count the format and frame descriptors. */ 906 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { 907 switch (_buffer[2]) { 908 case UVC_VS_FORMAT_UNCOMPRESSED: 909 case UVC_VS_FORMAT_MJPEG: 910 case UVC_VS_FORMAT_FRAME_BASED: 911 nformats++; 912 break; 913 914 case UVC_VS_FORMAT_DV: 915 /* DV format has no frame descriptor. We will create a 916 * dummy frame descriptor with a dummy frame interval. 917 */ 918 nformats++; 919 nframes++; 920 nintervals++; 921 break; 922 923 case UVC_VS_FORMAT_MPEG2TS: 924 case UVC_VS_FORMAT_STREAM_BASED: 925 uvc_dbg(dev, DESCR, 926 "device %d videostreaming interface %d FORMAT %u is not supported\n", 927 dev->udev->devnum, 928 alts->desc.bInterfaceNumber, _buffer[2]); 929 break; 930 931 case UVC_VS_FRAME_UNCOMPRESSED: 932 case UVC_VS_FRAME_MJPEG: 933 nframes++; 934 if (_buflen > 25) 935 nintervals += _buffer[25] ? _buffer[25] : 3; 936 break; 937 938 case UVC_VS_FRAME_FRAME_BASED: 939 nframes++; 940 if (_buflen > 21) 941 nintervals += _buffer[21] ? _buffer[21] : 3; 942 break; 943 } 944 945 _buflen -= _buffer[0]; 946 _buffer += _buffer[0]; 947 } 948 949 if (nformats == 0) { 950 uvc_dbg(dev, DESCR, 951 "device %d videostreaming interface %d has no supported formats defined\n", 952 dev->udev->devnum, alts->desc.bInterfaceNumber); 953 goto error; 954 } 955 956 size = nformats * sizeof(*format) + nframes * sizeof(*frame) 957 + nintervals * sizeof(*interval); 958 format = kzalloc(size, GFP_KERNEL); 959 if (format == NULL) { 960 ret = -ENOMEM; 961 goto error; 962 } 963 964 frame = (struct uvc_frame *)&format[nformats]; 965 interval = (u32 *)&frame[nframes]; 966 967 streaming->format = format; 968 streaming->nformats = nformats; 969 970 /* Parse the format descriptors. */ 971 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { 972 switch (buffer[2]) { 973 case UVC_VS_FORMAT_UNCOMPRESSED: 974 case UVC_VS_FORMAT_MJPEG: 975 case UVC_VS_FORMAT_DV: 976 case UVC_VS_FORMAT_FRAME_BASED: 977 format->frame = frame; 978 ret = uvc_parse_format(dev, streaming, format, 979 &interval, buffer, buflen); 980 if (ret < 0) 981 goto error; 982 983 frame += format->nframes; 984 format++; 985 986 buflen -= ret; 987 buffer += ret; 988 continue; 989 990 default: 991 break; 992 } 993 994 buflen -= buffer[0]; 995 buffer += buffer[0]; 996 } 997 998 if (buflen) 999 uvc_dbg(dev, DESCR, 1000 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n", 1001 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); 1002 1003 /* Parse the alternate settings to find the maximum bandwidth. */ 1004 for (i = 0; i < intf->num_altsetting; ++i) { 1005 struct usb_host_endpoint *ep; 1006 alts = &intf->altsetting[i]; 1007 ep = uvc_find_endpoint(alts, 1008 streaming->header.bEndpointAddress); 1009 if (ep == NULL) 1010 continue; 1011 1012 psize = le16_to_cpu(ep->desc.wMaxPacketSize); 1013 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); 1014 if (psize > streaming->maxpsize) 1015 streaming->maxpsize = psize; 1016 } 1017 1018 list_add_tail(&streaming->list, &dev->streams); 1019 return 0; 1020 1021 error: 1022 usb_driver_release_interface(&uvc_driver.driver, intf); 1023 uvc_stream_delete(streaming); 1024 return ret; 1025 } 1026 1027 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA; 1028 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER; 1029 static const u8 uvc_media_transport_input_guid[16] = 1030 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT; 1031 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING; 1032 1033 static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id, 1034 unsigned int num_pads, unsigned int extra_size) 1035 { 1036 struct uvc_entity *entity; 1037 unsigned int num_inputs; 1038 unsigned int size; 1039 unsigned int i; 1040 1041 extra_size = roundup(extra_size, sizeof(*entity->pads)); 1042 if (num_pads) 1043 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1; 1044 else 1045 num_inputs = 0; 1046 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads 1047 + num_inputs; 1048 entity = kzalloc(size, GFP_KERNEL); 1049 if (entity == NULL) 1050 return NULL; 1051 1052 entity->id = id; 1053 entity->type = type; 1054 1055 /* 1056 * Set the GUID for standard entity types. For extension units, the GUID 1057 * is initialized by the caller. 1058 */ 1059 switch (type) { 1060 case UVC_EXT_GPIO_UNIT: 1061 memcpy(entity->guid, uvc_gpio_guid, 16); 1062 break; 1063 case UVC_ITT_CAMERA: 1064 memcpy(entity->guid, uvc_camera_guid, 16); 1065 break; 1066 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1067 memcpy(entity->guid, uvc_media_transport_input_guid, 16); 1068 break; 1069 case UVC_VC_PROCESSING_UNIT: 1070 memcpy(entity->guid, uvc_processing_guid, 16); 1071 break; 1072 } 1073 1074 entity->num_links = 0; 1075 entity->num_pads = num_pads; 1076 entity->pads = ((void *)(entity + 1)) + extra_size; 1077 1078 for (i = 0; i < num_inputs; ++i) 1079 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 1080 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads) 1081 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; 1082 1083 entity->bNrInPins = num_inputs; 1084 entity->baSourceID = (u8 *)(&entity->pads[num_pads]); 1085 1086 return entity; 1087 } 1088 1089 /* Parse vendor-specific extensions. */ 1090 static int uvc_parse_vendor_control(struct uvc_device *dev, 1091 const unsigned char *buffer, int buflen) 1092 { 1093 struct usb_device *udev = dev->udev; 1094 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1095 struct uvc_entity *unit; 1096 unsigned int n, p; 1097 int handled = 0; 1098 1099 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { 1100 case 0x046d: /* Logitech */ 1101 if (buffer[1] != 0x41 || buffer[2] != 0x01) 1102 break; 1103 1104 /* Logitech implements several vendor specific functions 1105 * through vendor specific extension units (LXU). 1106 * 1107 * The LXU descriptors are similar to XU descriptors 1108 * (see "USB Device Video Class for Video Devices", section 1109 * 3.7.2.6 "Extension Unit Descriptor") with the following 1110 * differences: 1111 * 1112 * ---------------------------------------------------------- 1113 * 0 bLength 1 Number 1114 * Size of this descriptor, in bytes: 24+p+n*2 1115 * ---------------------------------------------------------- 1116 * 23+p+n bmControlsType N Bitmap 1117 * Individual bits in the set are defined: 1118 * 0: Absolute 1119 * 1: Relative 1120 * 1121 * This bitset is mapped exactly the same as bmControls. 1122 * ---------------------------------------------------------- 1123 * 23+p+n*2 bReserved 1 Boolean 1124 * ---------------------------------------------------------- 1125 * 24+p+n*2 iExtension 1 Index 1126 * Index of a string descriptor that describes this 1127 * extension unit. 1128 * ---------------------------------------------------------- 1129 */ 1130 p = buflen >= 22 ? buffer[21] : 0; 1131 n = buflen >= 25 + p ? buffer[22+p] : 0; 1132 1133 if (buflen < 25 + p + 2*n) { 1134 uvc_dbg(dev, DESCR, 1135 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 1136 udev->devnum, alts->desc.bInterfaceNumber); 1137 break; 1138 } 1139 1140 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], 1141 p + 1, 2*n); 1142 if (unit == NULL) 1143 return -ENOMEM; 1144 1145 memcpy(unit->guid, &buffer[4], 16); 1146 unit->extension.bNumControls = buffer[20]; 1147 memcpy(unit->baSourceID, &buffer[22], p); 1148 unit->extension.bControlSize = buffer[22+p]; 1149 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 1150 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit) 1151 + n; 1152 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); 1153 1154 if (buffer[24+p+2*n] != 0) 1155 usb_string(udev, buffer[24+p+2*n], unit->name, 1156 sizeof(unit->name)); 1157 else 1158 sprintf(unit->name, "Extension %u", buffer[3]); 1159 1160 list_add_tail(&unit->list, &dev->entities); 1161 handled = 1; 1162 break; 1163 } 1164 1165 return handled; 1166 } 1167 1168 static int uvc_parse_standard_control(struct uvc_device *dev, 1169 const unsigned char *buffer, int buflen) 1170 { 1171 struct usb_device *udev = dev->udev; 1172 struct uvc_entity *unit, *term; 1173 struct usb_interface *intf; 1174 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1175 unsigned int i, n, p, len; 1176 u16 type; 1177 1178 switch (buffer[2]) { 1179 case UVC_VC_HEADER: 1180 n = buflen >= 12 ? buffer[11] : 0; 1181 1182 if (buflen < 12 + n) { 1183 uvc_dbg(dev, DESCR, 1184 "device %d videocontrol interface %d HEADER error\n", 1185 udev->devnum, alts->desc.bInterfaceNumber); 1186 return -EINVAL; 1187 } 1188 1189 dev->uvc_version = get_unaligned_le16(&buffer[3]); 1190 dev->clock_frequency = get_unaligned_le32(&buffer[7]); 1191 1192 /* Parse all USB Video Streaming interfaces. */ 1193 for (i = 0; i < n; ++i) { 1194 intf = usb_ifnum_to_if(udev, buffer[12+i]); 1195 if (intf == NULL) { 1196 uvc_dbg(dev, DESCR, 1197 "device %d interface %d doesn't exists\n", 1198 udev->devnum, i); 1199 continue; 1200 } 1201 1202 uvc_parse_streaming(dev, intf); 1203 } 1204 break; 1205 1206 case UVC_VC_INPUT_TERMINAL: 1207 if (buflen < 8) { 1208 uvc_dbg(dev, DESCR, 1209 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1210 udev->devnum, alts->desc.bInterfaceNumber); 1211 return -EINVAL; 1212 } 1213 1214 /* 1215 * Reject invalid terminal types that would cause issues: 1216 * 1217 * - The high byte must be non-zero, otherwise it would be 1218 * confused with a unit. 1219 * 1220 * - Bit 15 must be 0, as we use it internally as a terminal 1221 * direction flag. 1222 * 1223 * Other unknown types are accepted. 1224 */ 1225 type = get_unaligned_le16(&buffer[4]); 1226 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) { 1227 uvc_dbg(dev, DESCR, 1228 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1229 udev->devnum, alts->desc.bInterfaceNumber, 1230 buffer[3], type); 1231 return 0; 1232 } 1233 1234 n = 0; 1235 p = 0; 1236 len = 8; 1237 1238 if (type == UVC_ITT_CAMERA) { 1239 n = buflen >= 15 ? buffer[14] : 0; 1240 len = 15; 1241 1242 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1243 n = buflen >= 9 ? buffer[8] : 0; 1244 p = buflen >= 10 + n ? buffer[9+n] : 0; 1245 len = 10; 1246 } 1247 1248 if (buflen < len + n + p) { 1249 uvc_dbg(dev, DESCR, 1250 "device %d videocontrol interface %d INPUT_TERMINAL error\n", 1251 udev->devnum, alts->desc.bInterfaceNumber); 1252 return -EINVAL; 1253 } 1254 1255 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], 1256 1, n + p); 1257 if (term == NULL) 1258 return -ENOMEM; 1259 1260 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { 1261 term->camera.bControlSize = n; 1262 term->camera.bmControls = (u8 *)term + sizeof(*term); 1263 term->camera.wObjectiveFocalLengthMin = 1264 get_unaligned_le16(&buffer[8]); 1265 term->camera.wObjectiveFocalLengthMax = 1266 get_unaligned_le16(&buffer[10]); 1267 term->camera.wOcularFocalLength = 1268 get_unaligned_le16(&buffer[12]); 1269 memcpy(term->camera.bmControls, &buffer[15], n); 1270 } else if (UVC_ENTITY_TYPE(term) == 1271 UVC_ITT_MEDIA_TRANSPORT_INPUT) { 1272 term->media.bControlSize = n; 1273 term->media.bmControls = (u8 *)term + sizeof(*term); 1274 term->media.bTransportModeSize = p; 1275 term->media.bmTransportModes = (u8 *)term 1276 + sizeof(*term) + n; 1277 memcpy(term->media.bmControls, &buffer[9], n); 1278 memcpy(term->media.bmTransportModes, &buffer[10+n], p); 1279 } 1280 1281 if (buffer[7] != 0) 1282 usb_string(udev, buffer[7], term->name, 1283 sizeof(term->name)); 1284 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) 1285 sprintf(term->name, "Camera %u", buffer[3]); 1286 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) 1287 sprintf(term->name, "Media %u", buffer[3]); 1288 else 1289 sprintf(term->name, "Input %u", buffer[3]); 1290 1291 list_add_tail(&term->list, &dev->entities); 1292 break; 1293 1294 case UVC_VC_OUTPUT_TERMINAL: 1295 if (buflen < 9) { 1296 uvc_dbg(dev, DESCR, 1297 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n", 1298 udev->devnum, alts->desc.bInterfaceNumber); 1299 return -EINVAL; 1300 } 1301 1302 /* Make sure the terminal type MSB is not null, otherwise it 1303 * could be confused with a unit. 1304 */ 1305 type = get_unaligned_le16(&buffer[4]); 1306 if ((type & 0xff00) == 0) { 1307 uvc_dbg(dev, DESCR, 1308 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n", 1309 udev->devnum, alts->desc.bInterfaceNumber, 1310 buffer[3], type); 1311 return 0; 1312 } 1313 1314 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], 1315 1, 0); 1316 if (term == NULL) 1317 return -ENOMEM; 1318 1319 memcpy(term->baSourceID, &buffer[7], 1); 1320 1321 if (buffer[8] != 0) 1322 usb_string(udev, buffer[8], term->name, 1323 sizeof(term->name)); 1324 else 1325 sprintf(term->name, "Output %u", buffer[3]); 1326 1327 list_add_tail(&term->list, &dev->entities); 1328 break; 1329 1330 case UVC_VC_SELECTOR_UNIT: 1331 p = buflen >= 5 ? buffer[4] : 0; 1332 1333 if (buflen < 5 || buflen < 6 + p) { 1334 uvc_dbg(dev, DESCR, 1335 "device %d videocontrol interface %d SELECTOR_UNIT error\n", 1336 udev->devnum, alts->desc.bInterfaceNumber); 1337 return -EINVAL; 1338 } 1339 1340 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); 1341 if (unit == NULL) 1342 return -ENOMEM; 1343 1344 memcpy(unit->baSourceID, &buffer[5], p); 1345 1346 if (buffer[5+p] != 0) 1347 usb_string(udev, buffer[5+p], unit->name, 1348 sizeof(unit->name)); 1349 else 1350 sprintf(unit->name, "Selector %u", buffer[3]); 1351 1352 list_add_tail(&unit->list, &dev->entities); 1353 break; 1354 1355 case UVC_VC_PROCESSING_UNIT: 1356 n = buflen >= 8 ? buffer[7] : 0; 1357 p = dev->uvc_version >= 0x0110 ? 10 : 9; 1358 1359 if (buflen < p + n) { 1360 uvc_dbg(dev, DESCR, 1361 "device %d videocontrol interface %d PROCESSING_UNIT error\n", 1362 udev->devnum, alts->desc.bInterfaceNumber); 1363 return -EINVAL; 1364 } 1365 1366 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); 1367 if (unit == NULL) 1368 return -ENOMEM; 1369 1370 memcpy(unit->baSourceID, &buffer[4], 1); 1371 unit->processing.wMaxMultiplier = 1372 get_unaligned_le16(&buffer[5]); 1373 unit->processing.bControlSize = buffer[7]; 1374 unit->processing.bmControls = (u8 *)unit + sizeof(*unit); 1375 memcpy(unit->processing.bmControls, &buffer[8], n); 1376 if (dev->uvc_version >= 0x0110) 1377 unit->processing.bmVideoStandards = buffer[9+n]; 1378 1379 if (buffer[8+n] != 0) 1380 usb_string(udev, buffer[8+n], unit->name, 1381 sizeof(unit->name)); 1382 else 1383 sprintf(unit->name, "Processing %u", buffer[3]); 1384 1385 list_add_tail(&unit->list, &dev->entities); 1386 break; 1387 1388 case UVC_VC_EXTENSION_UNIT: 1389 p = buflen >= 22 ? buffer[21] : 0; 1390 n = buflen >= 24 + p ? buffer[22+p] : 0; 1391 1392 if (buflen < 24 + p + n) { 1393 uvc_dbg(dev, DESCR, 1394 "device %d videocontrol interface %d EXTENSION_UNIT error\n", 1395 udev->devnum, alts->desc.bInterfaceNumber); 1396 return -EINVAL; 1397 } 1398 1399 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); 1400 if (unit == NULL) 1401 return -ENOMEM; 1402 1403 memcpy(unit->guid, &buffer[4], 16); 1404 unit->extension.bNumControls = buffer[20]; 1405 memcpy(unit->baSourceID, &buffer[22], p); 1406 unit->extension.bControlSize = buffer[22+p]; 1407 unit->extension.bmControls = (u8 *)unit + sizeof(*unit); 1408 memcpy(unit->extension.bmControls, &buffer[23+p], n); 1409 1410 if (buffer[23+p+n] != 0) 1411 usb_string(udev, buffer[23+p+n], unit->name, 1412 sizeof(unit->name)); 1413 else 1414 sprintf(unit->name, "Extension %u", buffer[3]); 1415 1416 list_add_tail(&unit->list, &dev->entities); 1417 break; 1418 1419 default: 1420 uvc_dbg(dev, DESCR, 1421 "Found an unknown CS_INTERFACE descriptor (%u)\n", 1422 buffer[2]); 1423 break; 1424 } 1425 1426 return 0; 1427 } 1428 1429 static int uvc_parse_control(struct uvc_device *dev) 1430 { 1431 struct usb_host_interface *alts = dev->intf->cur_altsetting; 1432 unsigned char *buffer = alts->extra; 1433 int buflen = alts->extralen; 1434 int ret; 1435 1436 /* Parse the default alternate setting only, as the UVC specification 1437 * defines a single alternate setting, the default alternate setting 1438 * zero. 1439 */ 1440 1441 while (buflen > 2) { 1442 if (uvc_parse_vendor_control(dev, buffer, buflen) || 1443 buffer[1] != USB_DT_CS_INTERFACE) 1444 goto next_descriptor; 1445 1446 if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) 1447 return ret; 1448 1449 next_descriptor: 1450 buflen -= buffer[0]; 1451 buffer += buffer[0]; 1452 } 1453 1454 /* Check if the optional status endpoint is present. Built-in iSight 1455 * webcams have an interrupt endpoint but spit proprietary data that 1456 * don't conform to the UVC status endpoint messages. Don't try to 1457 * handle the interrupt endpoint for those cameras. 1458 */ 1459 if (alts->desc.bNumEndpoints == 1 && 1460 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { 1461 struct usb_host_endpoint *ep = &alts->endpoint[0]; 1462 struct usb_endpoint_descriptor *desc = &ep->desc; 1463 1464 if (usb_endpoint_is_int_in(desc) && 1465 le16_to_cpu(desc->wMaxPacketSize) >= 8 && 1466 desc->bInterval != 0) { 1467 uvc_dbg(dev, DESCR, 1468 "Found a Status endpoint (addr %02x)\n", 1469 desc->bEndpointAddress); 1470 dev->int_ep = ep; 1471 } 1472 } 1473 1474 return 0; 1475 } 1476 1477 /* ----------------------------------------------------------------------------- 1478 * Privacy GPIO 1479 */ 1480 1481 static void uvc_gpio_event(struct uvc_device *dev) 1482 { 1483 struct uvc_entity *unit = dev->gpio_unit; 1484 struct uvc_video_chain *chain; 1485 u8 new_val; 1486 1487 if (!unit) 1488 return; 1489 1490 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy); 1491 1492 /* GPIO entities are always on the first chain. */ 1493 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list); 1494 uvc_ctrl_status_event(chain, unit->controls, &new_val); 1495 } 1496 1497 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity, 1498 u8 cs, void *data, u16 size) 1499 { 1500 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1) 1501 return -EINVAL; 1502 1503 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy); 1504 1505 return 0; 1506 } 1507 1508 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity, 1509 u8 cs, u8 *caps) 1510 { 1511 if (cs != UVC_CT_PRIVACY_CONTROL) 1512 return -EINVAL; 1513 1514 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE; 1515 return 0; 1516 } 1517 1518 static irqreturn_t uvc_gpio_irq(int irq, void *data) 1519 { 1520 struct uvc_device *dev = data; 1521 1522 uvc_gpio_event(dev); 1523 return IRQ_HANDLED; 1524 } 1525 1526 static int uvc_gpio_parse(struct uvc_device *dev) 1527 { 1528 struct uvc_entity *unit; 1529 struct gpio_desc *gpio_privacy; 1530 int irq; 1531 1532 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy", 1533 GPIOD_IN); 1534 if (IS_ERR_OR_NULL(gpio_privacy)) 1535 return PTR_ERR_OR_ZERO(gpio_privacy); 1536 1537 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1); 1538 if (!unit) 1539 return -ENOMEM; 1540 1541 irq = gpiod_to_irq(gpio_privacy); 1542 if (irq < 0) { 1543 if (irq != EPROBE_DEFER) 1544 dev_err(&dev->udev->dev, 1545 "No IRQ for privacy GPIO (%d)\n", irq); 1546 return irq; 1547 } 1548 1549 unit->gpio.gpio_privacy = gpio_privacy; 1550 unit->gpio.irq = irq; 1551 unit->gpio.bControlSize = 1; 1552 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit); 1553 unit->gpio.bmControls[0] = 1; 1554 unit->get_cur = uvc_gpio_get_cur; 1555 unit->get_info = uvc_gpio_get_info; 1556 strscpy(unit->name, "GPIO", sizeof(unit->name)); 1557 1558 list_add_tail(&unit->list, &dev->entities); 1559 1560 dev->gpio_unit = unit; 1561 1562 return 0; 1563 } 1564 1565 static int uvc_gpio_init_irq(struct uvc_device *dev) 1566 { 1567 struct uvc_entity *unit = dev->gpio_unit; 1568 1569 if (!unit || unit->gpio.irq < 0) 1570 return 0; 1571 1572 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL, 1573 uvc_gpio_irq, 1574 IRQF_ONESHOT | IRQF_TRIGGER_FALLING | 1575 IRQF_TRIGGER_RISING, 1576 "uvc_privacy_gpio", dev); 1577 } 1578 1579 /* ------------------------------------------------------------------------ 1580 * UVC device scan 1581 */ 1582 1583 /* 1584 * Scan the UVC descriptors to locate a chain starting at an Output Terminal 1585 * and containing the following units: 1586 * 1587 * - one or more Output Terminals (USB Streaming or Display) 1588 * - zero or one Processing Unit 1589 * - zero, one or more single-input Selector Units 1590 * - zero or one multiple-input Selector Units, provided all inputs are 1591 * connected to input terminals 1592 * - zero, one or mode single-input Extension Units 1593 * - one or more Input Terminals (Camera, External or USB Streaming) 1594 * 1595 * The terminal and units must match on of the following structures: 1596 * 1597 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) 1598 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... 1599 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) 1600 * 1601 * +---------+ +---------+ -> OTT_*(0) 1602 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... 1603 * +---------+ +---------+ -> OTT_*(n) 1604 * 1605 * The Processing Unit and Extension Units can be in any order. Additional 1606 * Extension Units connected to the main chain as single-unit branches are 1607 * also supported. Single-input Selector Units are ignored. 1608 */ 1609 static int uvc_scan_chain_entity(struct uvc_video_chain *chain, 1610 struct uvc_entity *entity) 1611 { 1612 switch (UVC_ENTITY_TYPE(entity)) { 1613 case UVC_VC_EXTENSION_UNIT: 1614 uvc_dbg_cont(PROBE, " <- XU %d", entity->id); 1615 1616 if (entity->bNrInPins != 1) { 1617 uvc_dbg(chain->dev, DESCR, 1618 "Extension unit %d has more than 1 input pin\n", 1619 entity->id); 1620 return -1; 1621 } 1622 1623 break; 1624 1625 case UVC_VC_PROCESSING_UNIT: 1626 uvc_dbg_cont(PROBE, " <- PU %d", entity->id); 1627 1628 if (chain->processing != NULL) { 1629 uvc_dbg(chain->dev, DESCR, 1630 "Found multiple Processing Units in chain\n"); 1631 return -1; 1632 } 1633 1634 chain->processing = entity; 1635 break; 1636 1637 case UVC_VC_SELECTOR_UNIT: 1638 uvc_dbg_cont(PROBE, " <- SU %d", entity->id); 1639 1640 /* Single-input selector units are ignored. */ 1641 if (entity->bNrInPins == 1) 1642 break; 1643 1644 if (chain->selector != NULL) { 1645 uvc_dbg(chain->dev, DESCR, 1646 "Found multiple Selector Units in chain\n"); 1647 return -1; 1648 } 1649 1650 chain->selector = entity; 1651 break; 1652 1653 case UVC_ITT_VENDOR_SPECIFIC: 1654 case UVC_ITT_CAMERA: 1655 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1656 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1657 1658 break; 1659 1660 case UVC_OTT_VENDOR_SPECIFIC: 1661 case UVC_OTT_DISPLAY: 1662 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1663 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1664 1665 break; 1666 1667 case UVC_TT_STREAMING: 1668 if (UVC_ENTITY_IS_ITERM(entity)) 1669 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id); 1670 else 1671 uvc_dbg_cont(PROBE, " OT %d", entity->id); 1672 1673 break; 1674 1675 default: 1676 uvc_dbg(chain->dev, DESCR, 1677 "Unsupported entity type 0x%04x found in chain\n", 1678 UVC_ENTITY_TYPE(entity)); 1679 return -1; 1680 } 1681 1682 list_add_tail(&entity->chain, &chain->entities); 1683 return 0; 1684 } 1685 1686 static int uvc_scan_chain_forward(struct uvc_video_chain *chain, 1687 struct uvc_entity *entity, struct uvc_entity *prev) 1688 { 1689 struct uvc_entity *forward; 1690 int found; 1691 1692 /* Forward scan */ 1693 forward = NULL; 1694 found = 0; 1695 1696 while (1) { 1697 forward = uvc_entity_by_reference(chain->dev, entity->id, 1698 forward); 1699 if (forward == NULL) 1700 break; 1701 if (forward == prev) 1702 continue; 1703 if (forward->chain.next || forward->chain.prev) { 1704 uvc_dbg(chain->dev, DESCR, 1705 "Found reference to entity %d already in chain\n", 1706 forward->id); 1707 return -EINVAL; 1708 } 1709 1710 switch (UVC_ENTITY_TYPE(forward)) { 1711 case UVC_VC_EXTENSION_UNIT: 1712 if (forward->bNrInPins != 1) { 1713 uvc_dbg(chain->dev, DESCR, 1714 "Extension unit %d has more than 1 input pin\n", 1715 entity->id); 1716 return -EINVAL; 1717 } 1718 1719 list_add_tail(&forward->chain, &chain->entities); 1720 if (!found) 1721 uvc_dbg_cont(PROBE, " (->"); 1722 1723 uvc_dbg_cont(PROBE, " XU %d", forward->id); 1724 found = 1; 1725 break; 1726 1727 case UVC_OTT_VENDOR_SPECIFIC: 1728 case UVC_OTT_DISPLAY: 1729 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1730 case UVC_TT_STREAMING: 1731 if (UVC_ENTITY_IS_ITERM(forward)) { 1732 uvc_dbg(chain->dev, DESCR, 1733 "Unsupported input terminal %u\n", 1734 forward->id); 1735 return -EINVAL; 1736 } 1737 1738 list_add_tail(&forward->chain, &chain->entities); 1739 if (!found) 1740 uvc_dbg_cont(PROBE, " (->"); 1741 1742 uvc_dbg_cont(PROBE, " OT %d", forward->id); 1743 found = 1; 1744 break; 1745 } 1746 } 1747 if (found) 1748 uvc_dbg_cont(PROBE, ")"); 1749 1750 return 0; 1751 } 1752 1753 static int uvc_scan_chain_backward(struct uvc_video_chain *chain, 1754 struct uvc_entity **_entity) 1755 { 1756 struct uvc_entity *entity = *_entity; 1757 struct uvc_entity *term; 1758 int id = -EINVAL, i; 1759 1760 switch (UVC_ENTITY_TYPE(entity)) { 1761 case UVC_VC_EXTENSION_UNIT: 1762 case UVC_VC_PROCESSING_UNIT: 1763 id = entity->baSourceID[0]; 1764 break; 1765 1766 case UVC_VC_SELECTOR_UNIT: 1767 /* Single-input selector units are ignored. */ 1768 if (entity->bNrInPins == 1) { 1769 id = entity->baSourceID[0]; 1770 break; 1771 } 1772 1773 uvc_dbg_cont(PROBE, " <- IT"); 1774 1775 chain->selector = entity; 1776 for (i = 0; i < entity->bNrInPins; ++i) { 1777 id = entity->baSourceID[i]; 1778 term = uvc_entity_by_id(chain->dev, id); 1779 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { 1780 uvc_dbg(chain->dev, DESCR, 1781 "Selector unit %d input %d isn't connected to an input terminal\n", 1782 entity->id, i); 1783 return -1; 1784 } 1785 1786 if (term->chain.next || term->chain.prev) { 1787 uvc_dbg(chain->dev, DESCR, 1788 "Found reference to entity %d already in chain\n", 1789 term->id); 1790 return -EINVAL; 1791 } 1792 1793 uvc_dbg_cont(PROBE, " %d", term->id); 1794 1795 list_add_tail(&term->chain, &chain->entities); 1796 uvc_scan_chain_forward(chain, term, entity); 1797 } 1798 1799 uvc_dbg_cont(PROBE, "\n"); 1800 1801 id = 0; 1802 break; 1803 1804 case UVC_ITT_VENDOR_SPECIFIC: 1805 case UVC_ITT_CAMERA: 1806 case UVC_ITT_MEDIA_TRANSPORT_INPUT: 1807 case UVC_OTT_VENDOR_SPECIFIC: 1808 case UVC_OTT_DISPLAY: 1809 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: 1810 case UVC_TT_STREAMING: 1811 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; 1812 break; 1813 } 1814 1815 if (id <= 0) { 1816 *_entity = NULL; 1817 return id; 1818 } 1819 1820 entity = uvc_entity_by_id(chain->dev, id); 1821 if (entity == NULL) { 1822 uvc_dbg(chain->dev, DESCR, 1823 "Found reference to unknown entity %d\n", id); 1824 return -EINVAL; 1825 } 1826 1827 *_entity = entity; 1828 return 0; 1829 } 1830 1831 static int uvc_scan_chain(struct uvc_video_chain *chain, 1832 struct uvc_entity *term) 1833 { 1834 struct uvc_entity *entity, *prev; 1835 1836 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:"); 1837 1838 entity = term; 1839 prev = NULL; 1840 1841 while (entity != NULL) { 1842 /* Entity must not be part of an existing chain */ 1843 if (entity->chain.next || entity->chain.prev) { 1844 uvc_dbg(chain->dev, DESCR, 1845 "Found reference to entity %d already in chain\n", 1846 entity->id); 1847 return -EINVAL; 1848 } 1849 1850 /* Process entity */ 1851 if (uvc_scan_chain_entity(chain, entity) < 0) 1852 return -EINVAL; 1853 1854 /* Forward scan */ 1855 if (uvc_scan_chain_forward(chain, entity, prev) < 0) 1856 return -EINVAL; 1857 1858 /* Backward scan */ 1859 prev = entity; 1860 if (uvc_scan_chain_backward(chain, &entity) < 0) 1861 return -EINVAL; 1862 } 1863 1864 return 0; 1865 } 1866 1867 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, 1868 char *buffer) 1869 { 1870 struct uvc_entity *term; 1871 unsigned int nterms = 0; 1872 char *p = buffer; 1873 1874 list_for_each_entry(term, terms, chain) { 1875 if (!UVC_ENTITY_IS_TERM(term) || 1876 UVC_TERM_DIRECTION(term) != dir) 1877 continue; 1878 1879 if (nterms) 1880 p += sprintf(p, ","); 1881 if (++nterms >= 4) { 1882 p += sprintf(p, "..."); 1883 break; 1884 } 1885 p += sprintf(p, "%u", term->id); 1886 } 1887 1888 return p - buffer; 1889 } 1890 1891 static const char *uvc_print_chain(struct uvc_video_chain *chain) 1892 { 1893 static char buffer[43]; 1894 char *p = buffer; 1895 1896 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); 1897 p += sprintf(p, " -> "); 1898 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); 1899 1900 return buffer; 1901 } 1902 1903 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) 1904 { 1905 struct uvc_video_chain *chain; 1906 1907 chain = kzalloc(sizeof(*chain), GFP_KERNEL); 1908 if (chain == NULL) 1909 return NULL; 1910 1911 INIT_LIST_HEAD(&chain->entities); 1912 mutex_init(&chain->ctrl_mutex); 1913 chain->dev = dev; 1914 v4l2_prio_init(&chain->prio); 1915 1916 return chain; 1917 } 1918 1919 /* 1920 * Fallback heuristic for devices that don't connect units and terminals in a 1921 * valid chain. 1922 * 1923 * Some devices have invalid baSourceID references, causing uvc_scan_chain() 1924 * to fail, but if we just take the entities we can find and put them together 1925 * in the most sensible chain we can think of, turns out they do work anyway. 1926 * Note: This heuristic assumes there is a single chain. 1927 * 1928 * At the time of writing, devices known to have such a broken chain are 1929 * - Acer Integrated Camera (5986:055a) 1930 * - Realtek rtl157a7 (0bda:57a7) 1931 */ 1932 static int uvc_scan_fallback(struct uvc_device *dev) 1933 { 1934 struct uvc_video_chain *chain; 1935 struct uvc_entity *iterm = NULL; 1936 struct uvc_entity *oterm = NULL; 1937 struct uvc_entity *entity; 1938 struct uvc_entity *prev; 1939 1940 /* 1941 * Start by locating the input and output terminals. We only support 1942 * devices with exactly one of each for now. 1943 */ 1944 list_for_each_entry(entity, &dev->entities, list) { 1945 if (UVC_ENTITY_IS_ITERM(entity)) { 1946 if (iterm) 1947 return -EINVAL; 1948 iterm = entity; 1949 } 1950 1951 if (UVC_ENTITY_IS_OTERM(entity)) { 1952 if (oterm) 1953 return -EINVAL; 1954 oterm = entity; 1955 } 1956 } 1957 1958 if (iterm == NULL || oterm == NULL) 1959 return -EINVAL; 1960 1961 /* Allocate the chain and fill it. */ 1962 chain = uvc_alloc_chain(dev); 1963 if (chain == NULL) 1964 return -ENOMEM; 1965 1966 if (uvc_scan_chain_entity(chain, oterm) < 0) 1967 goto error; 1968 1969 prev = oterm; 1970 1971 /* 1972 * Add all Processing and Extension Units with two pads. The order 1973 * doesn't matter much, use reverse list traversal to connect units in 1974 * UVC descriptor order as we build the chain from output to input. This 1975 * leads to units appearing in the order meant by the manufacturer for 1976 * the cameras known to require this heuristic. 1977 */ 1978 list_for_each_entry_reverse(entity, &dev->entities, list) { 1979 if (entity->type != UVC_VC_PROCESSING_UNIT && 1980 entity->type != UVC_VC_EXTENSION_UNIT) 1981 continue; 1982 1983 if (entity->num_pads != 2) 1984 continue; 1985 1986 if (uvc_scan_chain_entity(chain, entity) < 0) 1987 goto error; 1988 1989 prev->baSourceID[0] = entity->id; 1990 prev = entity; 1991 } 1992 1993 if (uvc_scan_chain_entity(chain, iterm) < 0) 1994 goto error; 1995 1996 prev->baSourceID[0] = iterm->id; 1997 1998 list_add_tail(&chain->list, &dev->chains); 1999 2000 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n", 2001 uvc_print_chain(chain)); 2002 2003 return 0; 2004 2005 error: 2006 kfree(chain); 2007 return -EINVAL; 2008 } 2009 2010 /* 2011 * Scan the device for video chains and register video devices. 2012 * 2013 * Chains are scanned starting at their output terminals and walked backwards. 2014 */ 2015 static int uvc_scan_device(struct uvc_device *dev) 2016 { 2017 struct uvc_video_chain *chain; 2018 struct uvc_entity *term; 2019 2020 list_for_each_entry(term, &dev->entities, list) { 2021 if (!UVC_ENTITY_IS_OTERM(term)) 2022 continue; 2023 2024 /* If the terminal is already included in a chain, skip it. 2025 * This can happen for chains that have multiple output 2026 * terminals, where all output terminals beside the first one 2027 * will be inserted in the chain in forward scans. 2028 */ 2029 if (term->chain.next || term->chain.prev) 2030 continue; 2031 2032 chain = uvc_alloc_chain(dev); 2033 if (chain == NULL) 2034 return -ENOMEM; 2035 2036 term->flags |= UVC_ENTITY_FLAG_DEFAULT; 2037 2038 if (uvc_scan_chain(chain, term) < 0) { 2039 kfree(chain); 2040 continue; 2041 } 2042 2043 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n", 2044 uvc_print_chain(chain)); 2045 2046 list_add_tail(&chain->list, &dev->chains); 2047 } 2048 2049 if (list_empty(&dev->chains)) 2050 uvc_scan_fallback(dev); 2051 2052 if (list_empty(&dev->chains)) { 2053 dev_info(&dev->udev->dev, "No valid video chain found.\n"); 2054 return -1; 2055 } 2056 2057 /* Add GPIO entity to the first chain. */ 2058 if (dev->gpio_unit) { 2059 chain = list_first_entry(&dev->chains, 2060 struct uvc_video_chain, list); 2061 list_add_tail(&dev->gpio_unit->chain, &chain->entities); 2062 } 2063 2064 return 0; 2065 } 2066 2067 /* ------------------------------------------------------------------------ 2068 * Video device registration and unregistration 2069 */ 2070 2071 /* 2072 * Delete the UVC device. 2073 * 2074 * Called by the kernel when the last reference to the uvc_device structure 2075 * is released. 2076 * 2077 * As this function is called after or during disconnect(), all URBs have 2078 * already been cancelled by the USB core. There is no need to kill the 2079 * interrupt URB manually. 2080 */ 2081 static void uvc_delete(struct kref *kref) 2082 { 2083 struct uvc_device *dev = container_of(kref, struct uvc_device, ref); 2084 struct list_head *p, *n; 2085 2086 uvc_status_cleanup(dev); 2087 uvc_ctrl_cleanup_device(dev); 2088 2089 usb_put_intf(dev->intf); 2090 usb_put_dev(dev->udev); 2091 2092 #ifdef CONFIG_MEDIA_CONTROLLER 2093 media_device_cleanup(&dev->mdev); 2094 #endif 2095 2096 list_for_each_safe(p, n, &dev->chains) { 2097 struct uvc_video_chain *chain; 2098 chain = list_entry(p, struct uvc_video_chain, list); 2099 kfree(chain); 2100 } 2101 2102 list_for_each_safe(p, n, &dev->entities) { 2103 struct uvc_entity *entity; 2104 entity = list_entry(p, struct uvc_entity, list); 2105 #ifdef CONFIG_MEDIA_CONTROLLER 2106 uvc_mc_cleanup_entity(entity); 2107 #endif 2108 kfree(entity); 2109 } 2110 2111 list_for_each_safe(p, n, &dev->streams) { 2112 struct uvc_streaming *streaming; 2113 streaming = list_entry(p, struct uvc_streaming, list); 2114 usb_driver_release_interface(&uvc_driver.driver, 2115 streaming->intf); 2116 uvc_stream_delete(streaming); 2117 } 2118 2119 kfree(dev); 2120 } 2121 2122 static void uvc_release(struct video_device *vdev) 2123 { 2124 struct uvc_streaming *stream = video_get_drvdata(vdev); 2125 struct uvc_device *dev = stream->dev; 2126 2127 kref_put(&dev->ref, uvc_delete); 2128 } 2129 2130 /* 2131 * Unregister the video devices. 2132 */ 2133 static void uvc_unregister_video(struct uvc_device *dev) 2134 { 2135 struct uvc_streaming *stream; 2136 2137 list_for_each_entry(stream, &dev->streams, list) { 2138 if (!video_is_registered(&stream->vdev)) 2139 continue; 2140 2141 video_unregister_device(&stream->vdev); 2142 video_unregister_device(&stream->meta.vdev); 2143 2144 uvc_debugfs_cleanup_stream(stream); 2145 } 2146 2147 uvc_status_unregister(dev); 2148 2149 if (dev->vdev.dev) 2150 v4l2_device_unregister(&dev->vdev); 2151 #ifdef CONFIG_MEDIA_CONTROLLER 2152 if (media_devnode_is_registered(dev->mdev.devnode)) 2153 media_device_unregister(&dev->mdev); 2154 #endif 2155 } 2156 2157 int uvc_register_video_device(struct uvc_device *dev, 2158 struct uvc_streaming *stream, 2159 struct video_device *vdev, 2160 struct uvc_video_queue *queue, 2161 enum v4l2_buf_type type, 2162 const struct v4l2_file_operations *fops, 2163 const struct v4l2_ioctl_ops *ioctl_ops) 2164 { 2165 int ret; 2166 2167 /* Initialize the video buffers queue. */ 2168 ret = uvc_queue_init(queue, type, !uvc_no_drop_param); 2169 if (ret) 2170 return ret; 2171 2172 /* Register the device with V4L. */ 2173 2174 /* 2175 * We already hold a reference to dev->udev. The video device will be 2176 * unregistered before the reference is released, so we don't need to 2177 * get another one. 2178 */ 2179 vdev->v4l2_dev = &dev->vdev; 2180 vdev->fops = fops; 2181 vdev->ioctl_ops = ioctl_ops; 2182 vdev->release = uvc_release; 2183 vdev->prio = &stream->chain->prio; 2184 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2185 vdev->vfl_dir = VFL_DIR_TX; 2186 else 2187 vdev->vfl_dir = VFL_DIR_RX; 2188 2189 switch (type) { 2190 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 2191 default: 2192 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 2193 break; 2194 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 2195 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; 2196 break; 2197 case V4L2_BUF_TYPE_META_CAPTURE: 2198 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; 2199 break; 2200 } 2201 2202 strscpy(vdev->name, dev->name, sizeof(vdev->name)); 2203 2204 /* 2205 * Set the driver data before calling video_register_device, otherwise 2206 * the file open() handler might race us. 2207 */ 2208 video_set_drvdata(vdev, stream); 2209 2210 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); 2211 if (ret < 0) { 2212 dev_err(&stream->intf->dev, 2213 "Failed to register %s device (%d).\n", 2214 v4l2_type_names[type], ret); 2215 return ret; 2216 } 2217 2218 kref_get(&dev->ref); 2219 return 0; 2220 } 2221 2222 static int uvc_register_video(struct uvc_device *dev, 2223 struct uvc_streaming *stream) 2224 { 2225 int ret; 2226 2227 /* Initialize the streaming interface with default parameters. */ 2228 ret = uvc_video_init(stream); 2229 if (ret < 0) { 2230 dev_err(&stream->intf->dev, 2231 "Failed to initialize the device (%d).\n", ret); 2232 return ret; 2233 } 2234 2235 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 2236 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE 2237 | V4L2_CAP_META_CAPTURE; 2238 else 2239 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; 2240 2241 uvc_debugfs_init_stream(stream); 2242 2243 /* Register the device with V4L. */ 2244 return uvc_register_video_device(dev, stream, &stream->vdev, 2245 &stream->queue, stream->type, 2246 &uvc_fops, &uvc_ioctl_ops); 2247 } 2248 2249 /* 2250 * Register all video devices in all chains. 2251 */ 2252 static int uvc_register_terms(struct uvc_device *dev, 2253 struct uvc_video_chain *chain) 2254 { 2255 struct uvc_streaming *stream; 2256 struct uvc_entity *term; 2257 int ret; 2258 2259 list_for_each_entry(term, &chain->entities, chain) { 2260 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) 2261 continue; 2262 2263 stream = uvc_stream_by_id(dev, term->id); 2264 if (stream == NULL) { 2265 dev_info(&dev->udev->dev, 2266 "No streaming interface found for terminal %u.", 2267 term->id); 2268 continue; 2269 } 2270 2271 stream->chain = chain; 2272 ret = uvc_register_video(dev, stream); 2273 if (ret < 0) 2274 return ret; 2275 2276 /* Register a metadata node, but ignore a possible failure, 2277 * complete registration of video nodes anyway. 2278 */ 2279 uvc_meta_register(stream); 2280 2281 term->vdev = &stream->vdev; 2282 } 2283 2284 return 0; 2285 } 2286 2287 static int uvc_register_chains(struct uvc_device *dev) 2288 { 2289 struct uvc_video_chain *chain; 2290 int ret; 2291 2292 list_for_each_entry(chain, &dev->chains, list) { 2293 ret = uvc_register_terms(dev, chain); 2294 if (ret < 0) 2295 return ret; 2296 2297 #ifdef CONFIG_MEDIA_CONTROLLER 2298 ret = uvc_mc_register_entities(chain); 2299 if (ret < 0) 2300 dev_info(&dev->udev->dev, 2301 "Failed to register entities (%d).\n", ret); 2302 #endif 2303 } 2304 2305 return 0; 2306 } 2307 2308 /* ------------------------------------------------------------------------ 2309 * USB probe, disconnect, suspend and resume 2310 */ 2311 2312 static const struct uvc_device_info uvc_quirk_none = { 0 }; 2313 2314 static int uvc_probe(struct usb_interface *intf, 2315 const struct usb_device_id *id) 2316 { 2317 struct usb_device *udev = interface_to_usbdev(intf); 2318 struct uvc_device *dev; 2319 const struct uvc_device_info *info = 2320 (const struct uvc_device_info *)id->driver_info; 2321 int function; 2322 int ret; 2323 2324 /* Allocate memory for the device and initialize it. */ 2325 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2326 if (dev == NULL) 2327 return -ENOMEM; 2328 2329 INIT_LIST_HEAD(&dev->entities); 2330 INIT_LIST_HEAD(&dev->chains); 2331 INIT_LIST_HEAD(&dev->streams); 2332 kref_init(&dev->ref); 2333 atomic_set(&dev->nmappings, 0); 2334 mutex_init(&dev->lock); 2335 2336 dev->udev = usb_get_dev(udev); 2337 dev->intf = usb_get_intf(intf); 2338 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 2339 dev->info = info ? info : &uvc_quirk_none; 2340 dev->quirks = uvc_quirks_param == -1 2341 ? dev->info->quirks : uvc_quirks_param; 2342 2343 if (id->idVendor && id->idProduct) 2344 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n", 2345 udev->devpath, id->idVendor, id->idProduct); 2346 else 2347 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n", 2348 udev->devpath); 2349 2350 if (udev->product != NULL) 2351 strscpy(dev->name, udev->product, sizeof(dev->name)); 2352 else 2353 snprintf(dev->name, sizeof(dev->name), 2354 "UVC Camera (%04x:%04x)", 2355 le16_to_cpu(udev->descriptor.idVendor), 2356 le16_to_cpu(udev->descriptor.idProduct)); 2357 2358 /* 2359 * Add iFunction or iInterface to names when available as additional 2360 * distinguishers between interfaces. iFunction is prioritized over 2361 * iInterface which matches Windows behavior at the point of writing. 2362 */ 2363 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0) 2364 function = intf->intf_assoc->iFunction; 2365 else 2366 function = intf->cur_altsetting->desc.iInterface; 2367 if (function != 0) { 2368 size_t len; 2369 2370 strlcat(dev->name, ": ", sizeof(dev->name)); 2371 len = strlen(dev->name); 2372 usb_string(udev, function, dev->name + len, 2373 sizeof(dev->name) - len); 2374 } 2375 2376 /* Initialize the media device. */ 2377 #ifdef CONFIG_MEDIA_CONTROLLER 2378 dev->mdev.dev = &intf->dev; 2379 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); 2380 if (udev->serial) 2381 strscpy(dev->mdev.serial, udev->serial, 2382 sizeof(dev->mdev.serial)); 2383 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info)); 2384 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); 2385 media_device_init(&dev->mdev); 2386 2387 dev->vdev.mdev = &dev->mdev; 2388 #endif 2389 2390 /* Parse the Video Class control descriptor. */ 2391 if (uvc_parse_control(dev) < 0) { 2392 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n"); 2393 goto error; 2394 } 2395 2396 /* Parse the associated GPIOs. */ 2397 if (uvc_gpio_parse(dev) < 0) { 2398 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n"); 2399 goto error; 2400 } 2401 2402 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", 2403 dev->uvc_version >> 8, dev->uvc_version & 0xff, 2404 udev->product ? udev->product : "<unnamed>", 2405 le16_to_cpu(udev->descriptor.idVendor), 2406 le16_to_cpu(udev->descriptor.idProduct)); 2407 2408 if (dev->quirks != dev->info->quirks) { 2409 dev_info(&dev->udev->dev, 2410 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n", 2411 dev->quirks); 2412 dev_info(&dev->udev->dev, 2413 "Please report required quirks to the linux-uvc-devel mailing list.\n"); 2414 } 2415 2416 if (dev->info->uvc_version) { 2417 dev->uvc_version = dev->info->uvc_version; 2418 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n", 2419 dev->uvc_version >> 8, dev->uvc_version & 0xff); 2420 } 2421 2422 /* Register the V4L2 device. */ 2423 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) 2424 goto error; 2425 2426 /* Initialize controls. */ 2427 if (uvc_ctrl_init_device(dev) < 0) 2428 goto error; 2429 2430 /* Scan the device for video chains. */ 2431 if (uvc_scan_device(dev) < 0) 2432 goto error; 2433 2434 /* Register video device nodes. */ 2435 if (uvc_register_chains(dev) < 0) 2436 goto error; 2437 2438 #ifdef CONFIG_MEDIA_CONTROLLER 2439 /* Register the media device node */ 2440 if (media_device_register(&dev->mdev) < 0) 2441 goto error; 2442 #endif 2443 /* Save our data pointer in the interface data. */ 2444 usb_set_intfdata(intf, dev); 2445 2446 /* Initialize the interrupt URB. */ 2447 if ((ret = uvc_status_init(dev)) < 0) { 2448 dev_info(&dev->udev->dev, 2449 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n", 2450 ret); 2451 } 2452 2453 ret = uvc_gpio_init_irq(dev); 2454 if (ret < 0) { 2455 dev_err(&dev->udev->dev, 2456 "Unable to request privacy GPIO IRQ (%d)\n", ret); 2457 goto error; 2458 } 2459 2460 uvc_dbg(dev, PROBE, "UVC device initialized\n"); 2461 usb_enable_autosuspend(udev); 2462 return 0; 2463 2464 error: 2465 uvc_unregister_video(dev); 2466 kref_put(&dev->ref, uvc_delete); 2467 return -ENODEV; 2468 } 2469 2470 static void uvc_disconnect(struct usb_interface *intf) 2471 { 2472 struct uvc_device *dev = usb_get_intfdata(intf); 2473 2474 /* Set the USB interface data to NULL. This can be done outside the 2475 * lock, as there's no other reader. 2476 */ 2477 usb_set_intfdata(intf, NULL); 2478 2479 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2480 UVC_SC_VIDEOSTREAMING) 2481 return; 2482 2483 uvc_unregister_video(dev); 2484 kref_put(&dev->ref, uvc_delete); 2485 } 2486 2487 static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 2488 { 2489 struct uvc_device *dev = usb_get_intfdata(intf); 2490 struct uvc_streaming *stream; 2491 2492 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n", 2493 intf->cur_altsetting->desc.bInterfaceNumber); 2494 2495 /* Controls are cached on the fly so they don't need to be saved. */ 2496 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2497 UVC_SC_VIDEOCONTROL) { 2498 mutex_lock(&dev->lock); 2499 if (dev->users) 2500 uvc_status_stop(dev); 2501 mutex_unlock(&dev->lock); 2502 return 0; 2503 } 2504 2505 list_for_each_entry(stream, &dev->streams, list) { 2506 if (stream->intf == intf) 2507 return uvc_video_suspend(stream); 2508 } 2509 2510 uvc_dbg(dev, SUSPEND, 2511 "Suspend: video streaming USB interface mismatch\n"); 2512 return -EINVAL; 2513 } 2514 2515 static int __uvc_resume(struct usb_interface *intf, int reset) 2516 { 2517 struct uvc_device *dev = usb_get_intfdata(intf); 2518 struct uvc_streaming *stream; 2519 int ret = 0; 2520 2521 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n", 2522 intf->cur_altsetting->desc.bInterfaceNumber); 2523 2524 if (intf->cur_altsetting->desc.bInterfaceSubClass == 2525 UVC_SC_VIDEOCONTROL) { 2526 if (reset) { 2527 ret = uvc_ctrl_restore_values(dev); 2528 if (ret < 0) 2529 return ret; 2530 } 2531 2532 mutex_lock(&dev->lock); 2533 if (dev->users) 2534 ret = uvc_status_start(dev, GFP_NOIO); 2535 mutex_unlock(&dev->lock); 2536 2537 return ret; 2538 } 2539 2540 list_for_each_entry(stream, &dev->streams, list) { 2541 if (stream->intf == intf) { 2542 ret = uvc_video_resume(stream, reset); 2543 if (ret < 0) 2544 uvc_queue_streamoff(&stream->queue, 2545 stream->queue.queue.type); 2546 return ret; 2547 } 2548 } 2549 2550 uvc_dbg(dev, SUSPEND, 2551 "Resume: video streaming USB interface mismatch\n"); 2552 return -EINVAL; 2553 } 2554 2555 static int uvc_resume(struct usb_interface *intf) 2556 { 2557 return __uvc_resume(intf, 0); 2558 } 2559 2560 static int uvc_reset_resume(struct usb_interface *intf) 2561 { 2562 return __uvc_resume(intf, 1); 2563 } 2564 2565 /* ------------------------------------------------------------------------ 2566 * Module parameters 2567 */ 2568 2569 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) 2570 { 2571 if (uvc_clock_param == CLOCK_MONOTONIC) 2572 return sprintf(buffer, "CLOCK_MONOTONIC"); 2573 else 2574 return sprintf(buffer, "CLOCK_REALTIME"); 2575 } 2576 2577 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) 2578 { 2579 if (strncasecmp(val, "clock_", strlen("clock_")) == 0) 2580 val += strlen("clock_"); 2581 2582 if (strcasecmp(val, "monotonic") == 0) 2583 uvc_clock_param = CLOCK_MONOTONIC; 2584 else if (strcasecmp(val, "realtime") == 0) 2585 uvc_clock_param = CLOCK_REALTIME; 2586 else 2587 return -EINVAL; 2588 2589 return 0; 2590 } 2591 2592 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, 2593 &uvc_clock_param, S_IRUGO|S_IWUSR); 2594 MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); 2595 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR); 2596 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); 2597 module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); 2598 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); 2599 module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); 2600 MODULE_PARM_DESC(quirks, "Forced device quirks"); 2601 module_param_named(trace, uvc_dbg_param, uint, S_IRUGO|S_IWUSR); 2602 MODULE_PARM_DESC(trace, "Trace level bitmask"); 2603 module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); 2604 MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); 2605 2606 /* ------------------------------------------------------------------------ 2607 * Driver initialization and cleanup 2608 */ 2609 2610 static const struct uvc_device_info uvc_quirk_probe_minmax = { 2611 .quirks = UVC_QUIRK_PROBE_MINMAX, 2612 }; 2613 2614 static const struct uvc_device_info uvc_quirk_fix_bandwidth = { 2615 .quirks = UVC_QUIRK_FIX_BANDWIDTH, 2616 }; 2617 2618 static const struct uvc_device_info uvc_quirk_probe_def = { 2619 .quirks = UVC_QUIRK_PROBE_DEF, 2620 }; 2621 2622 static const struct uvc_device_info uvc_quirk_stream_no_fid = { 2623 .quirks = UVC_QUIRK_STREAM_NO_FID, 2624 }; 2625 2626 static const struct uvc_device_info uvc_quirk_force_y8 = { 2627 .quirks = UVC_QUIRK_FORCE_Y8, 2628 }; 2629 2630 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q} 2631 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \ 2632 {.meta_format = m} 2633 2634 /* 2635 * The Logitech cameras listed below have their interface class set to 2636 * VENDOR_SPEC because they don't announce themselves as UVC devices, even 2637 * though they are compliant. 2638 */ 2639 static const struct usb_device_id uvc_ids[] = { 2640 /* LogiLink Wireless Webcam */ 2641 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2642 | USB_DEVICE_ID_MATCH_INT_INFO, 2643 .idVendor = 0x0416, 2644 .idProduct = 0xa91a, 2645 .bInterfaceClass = USB_CLASS_VIDEO, 2646 .bInterfaceSubClass = 1, 2647 .bInterfaceProtocol = 0, 2648 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2649 /* Genius eFace 2025 */ 2650 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2651 | USB_DEVICE_ID_MATCH_INT_INFO, 2652 .idVendor = 0x0458, 2653 .idProduct = 0x706e, 2654 .bInterfaceClass = USB_CLASS_VIDEO, 2655 .bInterfaceSubClass = 1, 2656 .bInterfaceProtocol = 0, 2657 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2658 /* Microsoft Lifecam NX-6000 */ 2659 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2660 | USB_DEVICE_ID_MATCH_INT_INFO, 2661 .idVendor = 0x045e, 2662 .idProduct = 0x00f8, 2663 .bInterfaceClass = USB_CLASS_VIDEO, 2664 .bInterfaceSubClass = 1, 2665 .bInterfaceProtocol = 0, 2666 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2667 /* Microsoft Lifecam NX-3000 */ 2668 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2669 | USB_DEVICE_ID_MATCH_INT_INFO, 2670 .idVendor = 0x045e, 2671 .idProduct = 0x0721, 2672 .bInterfaceClass = USB_CLASS_VIDEO, 2673 .bInterfaceSubClass = 1, 2674 .bInterfaceProtocol = 0, 2675 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2676 /* Microsoft Lifecam VX-7000 */ 2677 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2678 | USB_DEVICE_ID_MATCH_INT_INFO, 2679 .idVendor = 0x045e, 2680 .idProduct = 0x0723, 2681 .bInterfaceClass = USB_CLASS_VIDEO, 2682 .bInterfaceSubClass = 1, 2683 .bInterfaceProtocol = 0, 2684 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2685 /* Logitech Quickcam Fusion */ 2686 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2687 | USB_DEVICE_ID_MATCH_INT_INFO, 2688 .idVendor = 0x046d, 2689 .idProduct = 0x08c1, 2690 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2691 .bInterfaceSubClass = 1, 2692 .bInterfaceProtocol = 0 }, 2693 /* Logitech Quickcam Orbit MP */ 2694 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2695 | USB_DEVICE_ID_MATCH_INT_INFO, 2696 .idVendor = 0x046d, 2697 .idProduct = 0x08c2, 2698 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2699 .bInterfaceSubClass = 1, 2700 .bInterfaceProtocol = 0 }, 2701 /* Logitech Quickcam Pro for Notebook */ 2702 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2703 | USB_DEVICE_ID_MATCH_INT_INFO, 2704 .idVendor = 0x046d, 2705 .idProduct = 0x08c3, 2706 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2707 .bInterfaceSubClass = 1, 2708 .bInterfaceProtocol = 0 }, 2709 /* Logitech Quickcam Pro 5000 */ 2710 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2711 | USB_DEVICE_ID_MATCH_INT_INFO, 2712 .idVendor = 0x046d, 2713 .idProduct = 0x08c5, 2714 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2715 .bInterfaceSubClass = 1, 2716 .bInterfaceProtocol = 0 }, 2717 /* Logitech Quickcam OEM Dell Notebook */ 2718 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2719 | USB_DEVICE_ID_MATCH_INT_INFO, 2720 .idVendor = 0x046d, 2721 .idProduct = 0x08c6, 2722 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2723 .bInterfaceSubClass = 1, 2724 .bInterfaceProtocol = 0 }, 2725 /* Logitech Quickcam OEM Cisco VT Camera II */ 2726 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2727 | USB_DEVICE_ID_MATCH_INT_INFO, 2728 .idVendor = 0x046d, 2729 .idProduct = 0x08c7, 2730 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 2731 .bInterfaceSubClass = 1, 2732 .bInterfaceProtocol = 0 }, 2733 /* Logitech HD Pro Webcam C920 */ 2734 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2735 | USB_DEVICE_ID_MATCH_INT_INFO, 2736 .idVendor = 0x046d, 2737 .idProduct = 0x082d, 2738 .bInterfaceClass = USB_CLASS_VIDEO, 2739 .bInterfaceSubClass = 1, 2740 .bInterfaceProtocol = 0, 2741 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) }, 2742 /* Chicony CNF7129 (Asus EEE 100HE) */ 2743 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2744 | USB_DEVICE_ID_MATCH_INT_INFO, 2745 .idVendor = 0x04f2, 2746 .idProduct = 0xb071, 2747 .bInterfaceClass = USB_CLASS_VIDEO, 2748 .bInterfaceSubClass = 1, 2749 .bInterfaceProtocol = 0, 2750 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) }, 2751 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ 2752 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2753 | USB_DEVICE_ID_MATCH_INT_INFO, 2754 .idVendor = 0x058f, 2755 .idProduct = 0x3820, 2756 .bInterfaceClass = USB_CLASS_VIDEO, 2757 .bInterfaceSubClass = 1, 2758 .bInterfaceProtocol = 0, 2759 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2760 /* Dell XPS m1530 */ 2761 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2762 | USB_DEVICE_ID_MATCH_INT_INFO, 2763 .idVendor = 0x05a9, 2764 .idProduct = 0x2640, 2765 .bInterfaceClass = USB_CLASS_VIDEO, 2766 .bInterfaceSubClass = 1, 2767 .bInterfaceProtocol = 0, 2768 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2769 /* Dell SP2008WFP Monitor */ 2770 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2771 | USB_DEVICE_ID_MATCH_INT_INFO, 2772 .idVendor = 0x05a9, 2773 .idProduct = 0x2641, 2774 .bInterfaceClass = USB_CLASS_VIDEO, 2775 .bInterfaceSubClass = 1, 2776 .bInterfaceProtocol = 0, 2777 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2778 /* Dell Alienware X51 */ 2779 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2780 | USB_DEVICE_ID_MATCH_INT_INFO, 2781 .idVendor = 0x05a9, 2782 .idProduct = 0x2643, 2783 .bInterfaceClass = USB_CLASS_VIDEO, 2784 .bInterfaceSubClass = 1, 2785 .bInterfaceProtocol = 0, 2786 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2787 /* Dell Studio Hybrid 140g (OmniVision webcam) */ 2788 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2789 | USB_DEVICE_ID_MATCH_INT_INFO, 2790 .idVendor = 0x05a9, 2791 .idProduct = 0x264a, 2792 .bInterfaceClass = USB_CLASS_VIDEO, 2793 .bInterfaceSubClass = 1, 2794 .bInterfaceProtocol = 0, 2795 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2796 /* Dell XPS M1330 (OmniVision OV7670 webcam) */ 2797 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2798 | USB_DEVICE_ID_MATCH_INT_INFO, 2799 .idVendor = 0x05a9, 2800 .idProduct = 0x7670, 2801 .bInterfaceClass = USB_CLASS_VIDEO, 2802 .bInterfaceSubClass = 1, 2803 .bInterfaceProtocol = 0, 2804 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2805 /* Apple Built-In iSight */ 2806 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2807 | USB_DEVICE_ID_MATCH_INT_INFO, 2808 .idVendor = 0x05ac, 2809 .idProduct = 0x8501, 2810 .bInterfaceClass = USB_CLASS_VIDEO, 2811 .bInterfaceSubClass = 1, 2812 .bInterfaceProtocol = 0, 2813 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2814 | UVC_QUIRK_BUILTIN_ISIGHT) }, 2815 /* Apple Built-In iSight via iBridge */ 2816 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2817 | USB_DEVICE_ID_MATCH_INT_INFO, 2818 .idVendor = 0x05ac, 2819 .idProduct = 0x8600, 2820 .bInterfaceClass = USB_CLASS_VIDEO, 2821 .bInterfaceSubClass = 1, 2822 .bInterfaceProtocol = 0, 2823 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 2824 /* Foxlink ("HP Webcam" on HP Mini 5103) */ 2825 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2826 | USB_DEVICE_ID_MATCH_INT_INFO, 2827 .idVendor = 0x05c8, 2828 .idProduct = 0x0403, 2829 .bInterfaceClass = USB_CLASS_VIDEO, 2830 .bInterfaceSubClass = 1, 2831 .bInterfaceProtocol = 0, 2832 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2833 /* Genesys Logic USB 2.0 PC Camera */ 2834 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2835 | USB_DEVICE_ID_MATCH_INT_INFO, 2836 .idVendor = 0x05e3, 2837 .idProduct = 0x0505, 2838 .bInterfaceClass = USB_CLASS_VIDEO, 2839 .bInterfaceSubClass = 1, 2840 .bInterfaceProtocol = 0, 2841 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2842 /* Hercules Classic Silver */ 2843 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2844 | USB_DEVICE_ID_MATCH_INT_INFO, 2845 .idVendor = 0x06f8, 2846 .idProduct = 0x300c, 2847 .bInterfaceClass = USB_CLASS_VIDEO, 2848 .bInterfaceSubClass = 1, 2849 .bInterfaceProtocol = 0, 2850 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2851 /* ViMicro Vega */ 2852 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2853 | USB_DEVICE_ID_MATCH_INT_INFO, 2854 .idVendor = 0x0ac8, 2855 .idProduct = 0x332d, 2856 .bInterfaceClass = USB_CLASS_VIDEO, 2857 .bInterfaceSubClass = 1, 2858 .bInterfaceProtocol = 0, 2859 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2860 /* ViMicro - Minoru3D */ 2861 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2862 | USB_DEVICE_ID_MATCH_INT_INFO, 2863 .idVendor = 0x0ac8, 2864 .idProduct = 0x3410, 2865 .bInterfaceClass = USB_CLASS_VIDEO, 2866 .bInterfaceSubClass = 1, 2867 .bInterfaceProtocol = 0, 2868 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2869 /* ViMicro Venus - Minoru3D */ 2870 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2871 | USB_DEVICE_ID_MATCH_INT_INFO, 2872 .idVendor = 0x0ac8, 2873 .idProduct = 0x3420, 2874 .bInterfaceClass = USB_CLASS_VIDEO, 2875 .bInterfaceSubClass = 1, 2876 .bInterfaceProtocol = 0, 2877 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth }, 2878 /* Ophir Optronics - SPCAM 620U */ 2879 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2880 | USB_DEVICE_ID_MATCH_INT_INFO, 2881 .idVendor = 0x0bd3, 2882 .idProduct = 0x0555, 2883 .bInterfaceClass = USB_CLASS_VIDEO, 2884 .bInterfaceSubClass = 1, 2885 .bInterfaceProtocol = 0, 2886 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2887 /* MT6227 */ 2888 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2889 | USB_DEVICE_ID_MATCH_INT_INFO, 2890 .idVendor = 0x0e8d, 2891 .idProduct = 0x0004, 2892 .bInterfaceClass = USB_CLASS_VIDEO, 2893 .bInterfaceSubClass = 1, 2894 .bInterfaceProtocol = 0, 2895 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2896 | UVC_QUIRK_PROBE_DEF) }, 2897 /* IMC Networks (Medion Akoya) */ 2898 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2899 | USB_DEVICE_ID_MATCH_INT_INFO, 2900 .idVendor = 0x13d3, 2901 .idProduct = 0x5103, 2902 .bInterfaceClass = USB_CLASS_VIDEO, 2903 .bInterfaceSubClass = 1, 2904 .bInterfaceProtocol = 0, 2905 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2906 /* JMicron USB2.0 XGA WebCam */ 2907 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2908 | USB_DEVICE_ID_MATCH_INT_INFO, 2909 .idVendor = 0x152d, 2910 .idProduct = 0x0310, 2911 .bInterfaceClass = USB_CLASS_VIDEO, 2912 .bInterfaceSubClass = 1, 2913 .bInterfaceProtocol = 0, 2914 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 2915 /* Syntek (HP Spartan) */ 2916 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2917 | USB_DEVICE_ID_MATCH_INT_INFO, 2918 .idVendor = 0x174f, 2919 .idProduct = 0x5212, 2920 .bInterfaceClass = USB_CLASS_VIDEO, 2921 .bInterfaceSubClass = 1, 2922 .bInterfaceProtocol = 0, 2923 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2924 /* Syntek (Samsung Q310) */ 2925 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2926 | USB_DEVICE_ID_MATCH_INT_INFO, 2927 .idVendor = 0x174f, 2928 .idProduct = 0x5931, 2929 .bInterfaceClass = USB_CLASS_VIDEO, 2930 .bInterfaceSubClass = 1, 2931 .bInterfaceProtocol = 0, 2932 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2933 /* Syntek (Packard Bell EasyNote MX52 */ 2934 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2935 | USB_DEVICE_ID_MATCH_INT_INFO, 2936 .idVendor = 0x174f, 2937 .idProduct = 0x8a12, 2938 .bInterfaceClass = USB_CLASS_VIDEO, 2939 .bInterfaceSubClass = 1, 2940 .bInterfaceProtocol = 0, 2941 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2942 /* Syntek (Asus F9SG) */ 2943 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2944 | USB_DEVICE_ID_MATCH_INT_INFO, 2945 .idVendor = 0x174f, 2946 .idProduct = 0x8a31, 2947 .bInterfaceClass = USB_CLASS_VIDEO, 2948 .bInterfaceSubClass = 1, 2949 .bInterfaceProtocol = 0, 2950 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2951 /* Syntek (Asus U3S) */ 2952 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2953 | USB_DEVICE_ID_MATCH_INT_INFO, 2954 .idVendor = 0x174f, 2955 .idProduct = 0x8a33, 2956 .bInterfaceClass = USB_CLASS_VIDEO, 2957 .bInterfaceSubClass = 1, 2958 .bInterfaceProtocol = 0, 2959 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2960 /* Syntek (JAOtech Smart Terminal) */ 2961 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2962 | USB_DEVICE_ID_MATCH_INT_INFO, 2963 .idVendor = 0x174f, 2964 .idProduct = 0x8a34, 2965 .bInterfaceClass = USB_CLASS_VIDEO, 2966 .bInterfaceSubClass = 1, 2967 .bInterfaceProtocol = 0, 2968 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2969 /* Miricle 307K */ 2970 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2971 | USB_DEVICE_ID_MATCH_INT_INFO, 2972 .idVendor = 0x17dc, 2973 .idProduct = 0x0202, 2974 .bInterfaceClass = USB_CLASS_VIDEO, 2975 .bInterfaceSubClass = 1, 2976 .bInterfaceProtocol = 0, 2977 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2978 /* Lenovo Thinkpad SL400/SL500 */ 2979 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2980 | USB_DEVICE_ID_MATCH_INT_INFO, 2981 .idVendor = 0x17ef, 2982 .idProduct = 0x480b, 2983 .bInterfaceClass = USB_CLASS_VIDEO, 2984 .bInterfaceSubClass = 1, 2985 .bInterfaceProtocol = 0, 2986 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid }, 2987 /* Aveo Technology USB 2.0 Camera */ 2988 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2989 | USB_DEVICE_ID_MATCH_INT_INFO, 2990 .idVendor = 0x1871, 2991 .idProduct = 0x0306, 2992 .bInterfaceClass = USB_CLASS_VIDEO, 2993 .bInterfaceSubClass = 1, 2994 .bInterfaceProtocol = 0, 2995 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 2996 | UVC_QUIRK_PROBE_EXTRAFIELDS) }, 2997 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ 2998 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 2999 | USB_DEVICE_ID_MATCH_INT_INFO, 3000 .idVendor = 0x1871, 3001 .idProduct = 0x0516, 3002 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3003 .bInterfaceSubClass = 1, 3004 .bInterfaceProtocol = 0 }, 3005 /* Ecamm Pico iMage */ 3006 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3007 | USB_DEVICE_ID_MATCH_INT_INFO, 3008 .idVendor = 0x18cd, 3009 .idProduct = 0xcafe, 3010 .bInterfaceClass = USB_CLASS_VIDEO, 3011 .bInterfaceSubClass = 1, 3012 .bInterfaceProtocol = 0, 3013 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) }, 3014 /* Manta MM-353 Plako */ 3015 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3016 | USB_DEVICE_ID_MATCH_INT_INFO, 3017 .idVendor = 0x18ec, 3018 .idProduct = 0x3188, 3019 .bInterfaceClass = USB_CLASS_VIDEO, 3020 .bInterfaceSubClass = 1, 3021 .bInterfaceProtocol = 0, 3022 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3023 /* FSC WebCam V30S */ 3024 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3025 | USB_DEVICE_ID_MATCH_INT_INFO, 3026 .idVendor = 0x18ec, 3027 .idProduct = 0x3288, 3028 .bInterfaceClass = USB_CLASS_VIDEO, 3029 .bInterfaceSubClass = 1, 3030 .bInterfaceProtocol = 0, 3031 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3032 /* Arkmicro unbranded */ 3033 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3034 | USB_DEVICE_ID_MATCH_INT_INFO, 3035 .idVendor = 0x18ec, 3036 .idProduct = 0x3290, 3037 .bInterfaceClass = USB_CLASS_VIDEO, 3038 .bInterfaceSubClass = 1, 3039 .bInterfaceProtocol = 0, 3040 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def }, 3041 /* The Imaging Source USB CCD cameras */ 3042 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3043 | USB_DEVICE_ID_MATCH_INT_INFO, 3044 .idVendor = 0x199e, 3045 .idProduct = 0x8102, 3046 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3047 .bInterfaceSubClass = 1, 3048 .bInterfaceProtocol = 0 }, 3049 /* Bodelin ProScopeHR */ 3050 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3051 | USB_DEVICE_ID_MATCH_DEV_HI 3052 | USB_DEVICE_ID_MATCH_INT_INFO, 3053 .idVendor = 0x19ab, 3054 .idProduct = 0x1000, 3055 .bcdDevice_hi = 0x0126, 3056 .bInterfaceClass = USB_CLASS_VIDEO, 3057 .bInterfaceSubClass = 1, 3058 .bInterfaceProtocol = 0, 3059 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) }, 3060 /* MSI StarCam 370i */ 3061 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3062 | USB_DEVICE_ID_MATCH_INT_INFO, 3063 .idVendor = 0x1b3b, 3064 .idProduct = 0x2951, 3065 .bInterfaceClass = USB_CLASS_VIDEO, 3066 .bInterfaceSubClass = 1, 3067 .bInterfaceProtocol = 0, 3068 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3069 /* Generalplus Technology Inc. 808 Camera */ 3070 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3071 | USB_DEVICE_ID_MATCH_INT_INFO, 3072 .idVendor = 0x1b3f, 3073 .idProduct = 0x2002, 3074 .bInterfaceClass = USB_CLASS_VIDEO, 3075 .bInterfaceSubClass = 1, 3076 .bInterfaceProtocol = 0, 3077 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, 3078 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */ 3079 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3080 | USB_DEVICE_ID_MATCH_INT_INFO, 3081 .idVendor = 0x1bcf, 3082 .idProduct = 0x0b40, 3083 .bInterfaceClass = USB_CLASS_VIDEO, 3084 .bInterfaceSubClass = 1, 3085 .bInterfaceProtocol = 0, 3086 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){ 3087 .uvc_version = 0x010a, 3088 } }, 3089 /* SiGma Micro USB Web Camera */ 3090 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3091 | USB_DEVICE_ID_MATCH_INT_INFO, 3092 .idVendor = 0x1c4f, 3093 .idProduct = 0x3000, 3094 .bInterfaceClass = USB_CLASS_VIDEO, 3095 .bInterfaceSubClass = 1, 3096 .bInterfaceProtocol = 0, 3097 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX 3098 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) }, 3099 /* Oculus VR Positional Tracker DK2 */ 3100 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3101 | USB_DEVICE_ID_MATCH_INT_INFO, 3102 .idVendor = 0x2833, 3103 .idProduct = 0x0201, 3104 .bInterfaceClass = USB_CLASS_VIDEO, 3105 .bInterfaceSubClass = 1, 3106 .bInterfaceProtocol = 0, 3107 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3108 /* Oculus VR Rift Sensor */ 3109 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3110 | USB_DEVICE_ID_MATCH_INT_INFO, 3111 .idVendor = 0x2833, 3112 .idProduct = 0x0211, 3113 .bInterfaceClass = USB_CLASS_VENDOR_SPEC, 3114 .bInterfaceSubClass = 1, 3115 .bInterfaceProtocol = 0, 3116 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 }, 3117 /* GEO Semiconductor GC6500 */ 3118 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3119 | USB_DEVICE_ID_MATCH_INT_INFO, 3120 .idVendor = 0x29fe, 3121 .idProduct = 0x4d53, 3122 .bInterfaceClass = USB_CLASS_VIDEO, 3123 .bInterfaceSubClass = 1, 3124 .bInterfaceProtocol = 0, 3125 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) }, 3126 /* Intel RealSense D4M */ 3127 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE 3128 | USB_DEVICE_ID_MATCH_INT_INFO, 3129 .idVendor = 0x8086, 3130 .idProduct = 0x0b03, 3131 .bInterfaceClass = USB_CLASS_VIDEO, 3132 .bInterfaceSubClass = 1, 3133 .bInterfaceProtocol = 0, 3134 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) }, 3135 /* Generic USB Video Class */ 3136 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, 3137 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, 3138 {} 3139 }; 3140 3141 MODULE_DEVICE_TABLE(usb, uvc_ids); 3142 3143 struct uvc_driver uvc_driver = { 3144 .driver = { 3145 .name = "uvcvideo", 3146 .probe = uvc_probe, 3147 .disconnect = uvc_disconnect, 3148 .suspend = uvc_suspend, 3149 .resume = uvc_resume, 3150 .reset_resume = uvc_reset_resume, 3151 .id_table = uvc_ids, 3152 .supports_autosuspend = 1, 3153 }, 3154 }; 3155 3156 static int __init uvc_init(void) 3157 { 3158 int ret; 3159 3160 uvc_debugfs_init(); 3161 3162 ret = usb_register(&uvc_driver.driver); 3163 if (ret < 0) { 3164 uvc_debugfs_cleanup(); 3165 return ret; 3166 } 3167 3168 return 0; 3169 } 3170 3171 static void __exit uvc_cleanup(void) 3172 { 3173 usb_deregister(&uvc_driver.driver); 3174 uvc_debugfs_cleanup(); 3175 } 3176 3177 module_init(uvc_init); 3178 module_exit(uvc_cleanup); 3179 3180 MODULE_AUTHOR(DRIVER_AUTHOR); 3181 MODULE_DESCRIPTION(DRIVER_DESC); 3182 MODULE_LICENSE("GPL"); 3183 MODULE_VERSION(DRIVER_VERSION); 3184 3185