1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * uvc_driver.c -- USB Video Class driver
4 *
5 * Copyright (C) 2005-2010
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 */
8
9 #include <linux/atomic.h>
10 #include <linux/bits.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/kernel.h>
13 #include <linux/list.h>
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/usb.h>
17 #include <linux/usb/quirks.h>
18 #include <linux/usb/uvc.h>
19 #include <linux/videodev2.h>
20 #include <linux/vmalloc.h>
21 #include <linux/wait.h>
22 #include <asm/unaligned.h>
23
24 #include <media/v4l2-common.h>
25 #include <media/v4l2-ioctl.h>
26
27 #include "uvcvideo.h"
28
29 #define DRIVER_AUTHOR "Laurent Pinchart " \
30 "<laurent.pinchart@ideasonboard.com>"
31 #define DRIVER_DESC "USB Video Class driver"
32
33 unsigned int uvc_clock_param = CLOCK_MONOTONIC;
34 unsigned int uvc_hw_timestamps_param;
35 unsigned int uvc_no_drop_param;
36 static unsigned int uvc_quirks_param = -1;
37 unsigned int uvc_dbg_param;
38 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
39
40 /* ------------------------------------------------------------------------
41 * Utility functions
42 */
43
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)44 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
45 u8 epaddr)
46 {
47 struct usb_host_endpoint *ep;
48 unsigned int i;
49
50 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
51 ep = &alts->endpoint[i];
52 if (ep->desc.bEndpointAddress == epaddr)
53 return ep;
54 }
55
56 return NULL;
57 }
58
uvc_colorspace(const u8 primaries)59 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
60 {
61 static const enum v4l2_colorspace colorprimaries[] = {
62 V4L2_COLORSPACE_SRGB, /* Unspecified */
63 V4L2_COLORSPACE_SRGB,
64 V4L2_COLORSPACE_470_SYSTEM_M,
65 V4L2_COLORSPACE_470_SYSTEM_BG,
66 V4L2_COLORSPACE_SMPTE170M,
67 V4L2_COLORSPACE_SMPTE240M,
68 };
69
70 if (primaries < ARRAY_SIZE(colorprimaries))
71 return colorprimaries[primaries];
72
73 return V4L2_COLORSPACE_SRGB; /* Reserved */
74 }
75
uvc_xfer_func(const u8 transfer_characteristics)76 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
77 {
78 /*
79 * V4L2 does not currently have definitions for all possible values of
80 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
81 * values, the mapping below should be updated.
82 *
83 * Substitutions are taken from the mapping given for
84 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
85 */
86 static const enum v4l2_xfer_func xfer_funcs[] = {
87 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
88 V4L2_XFER_FUNC_709,
89 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
90 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
91 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
92 V4L2_XFER_FUNC_SMPTE240M,
93 V4L2_XFER_FUNC_NONE,
94 V4L2_XFER_FUNC_SRGB,
95 };
96
97 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
98 return xfer_funcs[transfer_characteristics];
99
100 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
101 }
102
uvc_ycbcr_enc(const u8 matrix_coefficients)103 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
104 {
105 /*
106 * V4L2 does not currently have definitions for all possible values of
107 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
108 * values, the mapping below should be updated.
109 *
110 * Substitutions are taken from the mapping given for
111 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
112 *
113 * FCC is assumed to be close enough to 601.
114 */
115 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
116 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
117 V4L2_YCBCR_ENC_709,
118 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
119 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
120 V4L2_YCBCR_ENC_601,
121 V4L2_YCBCR_ENC_SMPTE240M,
122 };
123
124 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
125 return ycbcr_encs[matrix_coefficients];
126
127 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
128 }
129
130 /* ------------------------------------------------------------------------
131 * Terminal and unit management
132 */
133
uvc_entity_by_id(struct uvc_device * dev,int id)134 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
135 {
136 struct uvc_entity *entity;
137
138 list_for_each_entry(entity, &dev->entities, list) {
139 if (entity->id == id)
140 return entity;
141 }
142
143 return NULL;
144 }
145
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)146 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
147 int id, struct uvc_entity *entity)
148 {
149 unsigned int i;
150
151 if (entity == NULL)
152 entity = list_entry(&dev->entities, struct uvc_entity, list);
153
154 list_for_each_entry_continue(entity, &dev->entities, list) {
155 for (i = 0; i < entity->bNrInPins; ++i)
156 if (entity->baSourceID[i] == id)
157 return entity;
158 }
159
160 return NULL;
161 }
162
uvc_stream_by_id(struct uvc_device * dev,int id)163 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
164 {
165 struct uvc_streaming *stream;
166
167 list_for_each_entry(stream, &dev->streams, list) {
168 if (stream->header.bTerminalLink == id)
169 return stream;
170 }
171
172 return NULL;
173 }
174
175 /* ------------------------------------------------------------------------
176 * Streaming Object Management
177 */
178
uvc_stream_delete(struct uvc_streaming * stream)179 static void uvc_stream_delete(struct uvc_streaming *stream)
180 {
181 if (stream->async_wq)
182 destroy_workqueue(stream->async_wq);
183
184 mutex_destroy(&stream->mutex);
185
186 usb_put_intf(stream->intf);
187
188 kfree(stream->formats);
189 kfree(stream->header.bmaControls);
190 kfree(stream);
191 }
192
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)193 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
194 struct usb_interface *intf)
195 {
196 struct uvc_streaming *stream;
197
198 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
199 if (stream == NULL)
200 return NULL;
201
202 mutex_init(&stream->mutex);
203
204 stream->dev = dev;
205 stream->intf = usb_get_intf(intf);
206 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
207
208 /* Allocate a stream specific work queue for asynchronous tasks. */
209 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
210 0);
211 if (!stream->async_wq) {
212 uvc_stream_delete(stream);
213 return NULL;
214 }
215
216 return stream;
217 }
218
219 /* ------------------------------------------------------------------------
220 * Descriptors parsing
221 */
222
uvc_parse_format(struct uvc_device * dev,struct uvc_streaming * streaming,struct uvc_format * format,struct uvc_frame * frames,u32 ** intervals,const unsigned char * buffer,int buflen)223 static int uvc_parse_format(struct uvc_device *dev,
224 struct uvc_streaming *streaming, struct uvc_format *format,
225 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer,
226 int buflen)
227 {
228 struct usb_interface *intf = streaming->intf;
229 struct usb_host_interface *alts = intf->cur_altsetting;
230 const struct uvc_format_desc *fmtdesc;
231 struct uvc_frame *frame;
232 const unsigned char *start = buffer;
233 unsigned int width_multiplier = 1;
234 unsigned int interval;
235 unsigned int i, n;
236 u8 ftype;
237
238 format->type = buffer[2];
239 format->index = buffer[3];
240 format->frames = frames;
241
242 switch (buffer[2]) {
243 case UVC_VS_FORMAT_UNCOMPRESSED:
244 case UVC_VS_FORMAT_FRAME_BASED:
245 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
246 if (buflen < n) {
247 uvc_dbg(dev, DESCR,
248 "device %d videostreaming interface %d FORMAT error\n",
249 dev->udev->devnum,
250 alts->desc.bInterfaceNumber);
251 return -EINVAL;
252 }
253
254 /* Find the format descriptor from its GUID. */
255 fmtdesc = uvc_format_by_guid(&buffer[5]);
256
257 if (!fmtdesc) {
258 /*
259 * Unknown video formats are not fatal errors, the
260 * caller will skip this descriptor.
261 */
262 dev_info(&streaming->intf->dev,
263 "Unknown video format %pUl\n", &buffer[5]);
264 return 0;
265 }
266
267 format->fcc = fmtdesc->fcc;
268 format->bpp = buffer[21];
269
270 /*
271 * Some devices report a format that doesn't match what they
272 * really send.
273 */
274 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
275 if (format->fcc == V4L2_PIX_FMT_YUYV) {
276 format->fcc = V4L2_PIX_FMT_GREY;
277 format->bpp = 8;
278 width_multiplier = 2;
279 }
280 }
281
282 /* Some devices report bpp that doesn't match the format. */
283 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
284 const struct v4l2_format_info *info =
285 v4l2_format_info(format->fcc);
286
287 if (info) {
288 unsigned int div = info->hdiv * info->vdiv;
289
290 n = info->bpp[0] * div;
291 for (i = 1; i < info->comp_planes; i++)
292 n += info->bpp[i];
293
294 format->bpp = DIV_ROUND_UP(8 * n, div);
295 }
296 }
297
298 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
299 ftype = UVC_VS_FRAME_UNCOMPRESSED;
300 } else {
301 ftype = UVC_VS_FRAME_FRAME_BASED;
302 if (buffer[27])
303 format->flags = UVC_FMT_FLAG_COMPRESSED;
304 }
305 break;
306
307 case UVC_VS_FORMAT_MJPEG:
308 if (buflen < 11) {
309 uvc_dbg(dev, DESCR,
310 "device %d videostreaming interface %d FORMAT error\n",
311 dev->udev->devnum,
312 alts->desc.bInterfaceNumber);
313 return -EINVAL;
314 }
315
316 format->fcc = V4L2_PIX_FMT_MJPEG;
317 format->flags = UVC_FMT_FLAG_COMPRESSED;
318 format->bpp = 0;
319 ftype = UVC_VS_FRAME_MJPEG;
320 break;
321
322 case UVC_VS_FORMAT_DV:
323 if (buflen < 9) {
324 uvc_dbg(dev, DESCR,
325 "device %d videostreaming interface %d FORMAT error\n",
326 dev->udev->devnum,
327 alts->desc.bInterfaceNumber);
328 return -EINVAL;
329 }
330
331 if ((buffer[8] & 0x7f) > 2) {
332 uvc_dbg(dev, DESCR,
333 "device %d videostreaming interface %d: unknown DV format %u\n",
334 dev->udev->devnum,
335 alts->desc.bInterfaceNumber, buffer[8]);
336 return -EINVAL;
337 }
338
339 format->fcc = V4L2_PIX_FMT_DV;
340 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
341 format->bpp = 0;
342 ftype = 0;
343
344 /* Create a dummy frame descriptor. */
345 frame = &frames[0];
346 memset(frame, 0, sizeof(*frame));
347 frame->bFrameIntervalType = 1;
348 frame->dwDefaultFrameInterval = 1;
349 frame->dwFrameInterval = *intervals;
350 *(*intervals)++ = 1;
351 format->nframes = 1;
352 break;
353
354 case UVC_VS_FORMAT_MPEG2TS:
355 case UVC_VS_FORMAT_STREAM_BASED:
356 /* Not supported yet. */
357 default:
358 uvc_dbg(dev, DESCR,
359 "device %d videostreaming interface %d unsupported format %u\n",
360 dev->udev->devnum, alts->desc.bInterfaceNumber,
361 buffer[2]);
362 return -EINVAL;
363 }
364
365 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc);
366
367 buflen -= buffer[0];
368 buffer += buffer[0];
369
370 /*
371 * Parse the frame descriptors. Only uncompressed, MJPEG and frame
372 * based formats have frame descriptors.
373 */
374 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
375 buffer[2] == ftype) {
376 unsigned int maxIntervalIndex;
377
378 frame = &frames[format->nframes];
379 if (ftype != UVC_VS_FRAME_FRAME_BASED)
380 n = buflen > 25 ? buffer[25] : 0;
381 else
382 n = buflen > 21 ? buffer[21] : 0;
383
384 n = n ? n : 3;
385
386 if (buflen < 26 + 4*n) {
387 uvc_dbg(dev, DESCR,
388 "device %d videostreaming interface %d FRAME error\n",
389 dev->udev->devnum,
390 alts->desc.bInterfaceNumber);
391 return -EINVAL;
392 }
393
394 frame->bFrameIndex = buffer[3];
395 frame->bmCapabilities = buffer[4];
396 frame->wWidth = get_unaligned_le16(&buffer[5])
397 * width_multiplier;
398 frame->wHeight = get_unaligned_le16(&buffer[7]);
399 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
400 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
401 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
402 frame->dwMaxVideoFrameBufferSize =
403 get_unaligned_le32(&buffer[17]);
404 frame->dwDefaultFrameInterval =
405 get_unaligned_le32(&buffer[21]);
406 frame->bFrameIntervalType = buffer[25];
407 } else {
408 frame->dwMaxVideoFrameBufferSize = 0;
409 frame->dwDefaultFrameInterval =
410 get_unaligned_le32(&buffer[17]);
411 frame->bFrameIntervalType = buffer[21];
412 }
413
414 /*
415 * Copy the frame intervals.
416 *
417 * Some bogus devices report dwMinFrameInterval equal to
418 * dwMaxFrameInterval and have dwFrameIntervalStep set to
419 * zero. Setting all null intervals to 1 fixes the problem and
420 * some other divisions by zero that could happen.
421 */
422 frame->dwFrameInterval = *intervals;
423
424 for (i = 0; i < n; ++i) {
425 interval = get_unaligned_le32(&buffer[26+4*i]);
426 (*intervals)[i] = interval ? interval : 1;
427 }
428
429 /*
430 * Apply more fixes, quirks and workarounds to handle incorrect
431 * or broken descriptors.
432 */
433
434 /*
435 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize
436 * completely. Observed behaviours range from setting the
437 * value to 1.1x the actual frame size to hardwiring the
438 * 16 low bits to 0. This results in a higher than necessary
439 * memory usage as well as a wrong image size information. For
440 * uncompressed formats this can be fixed by computing the
441 * value from the frame size.
442 */
443 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
444 frame->dwMaxVideoFrameBufferSize = format->bpp
445 * frame->wWidth * frame->wHeight / 8;
446
447 /*
448 * Clamp the default frame interval to the boundaries. A zero
449 * bFrameIntervalType value indicates a continuous frame
450 * interval range, with dwFrameInterval[0] storing the minimum
451 * value and dwFrameInterval[1] storing the maximum value.
452 */
453 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1;
454 frame->dwDefaultFrameInterval =
455 clamp(frame->dwDefaultFrameInterval,
456 frame->dwFrameInterval[0],
457 frame->dwFrameInterval[maxIntervalIndex]);
458
459 /*
460 * Some devices report frame intervals that are not functional.
461 * If the corresponding quirk is set, restrict operation to the
462 * first interval only.
463 */
464 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
465 frame->bFrameIntervalType = 1;
466 (*intervals)[0] = frame->dwDefaultFrameInterval;
467 }
468
469 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
470 frame->wWidth, frame->wHeight,
471 10000000 / frame->dwDefaultFrameInterval,
472 (100000000 / frame->dwDefaultFrameInterval) % 10);
473
474 format->nframes++;
475 *intervals += n;
476
477 buflen -= buffer[0];
478 buffer += buffer[0];
479 }
480
481 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
482 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
483 buflen -= buffer[0];
484 buffer += buffer[0];
485 }
486
487 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
488 buffer[2] == UVC_VS_COLORFORMAT) {
489 if (buflen < 6) {
490 uvc_dbg(dev, DESCR,
491 "device %d videostreaming interface %d COLORFORMAT error\n",
492 dev->udev->devnum,
493 alts->desc.bInterfaceNumber);
494 return -EINVAL;
495 }
496
497 format->colorspace = uvc_colorspace(buffer[3]);
498 format->xfer_func = uvc_xfer_func(buffer[4]);
499 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
500
501 buflen -= buffer[0];
502 buffer += buffer[0];
503 } else {
504 format->colorspace = V4L2_COLORSPACE_SRGB;
505 }
506
507 return buffer - start;
508 }
509
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)510 static int uvc_parse_streaming(struct uvc_device *dev,
511 struct usb_interface *intf)
512 {
513 struct uvc_streaming *streaming = NULL;
514 struct uvc_format *format;
515 struct uvc_frame *frame;
516 struct usb_host_interface *alts = &intf->altsetting[0];
517 const unsigned char *_buffer, *buffer = alts->extra;
518 int _buflen, buflen = alts->extralen;
519 unsigned int nformats = 0, nframes = 0, nintervals = 0;
520 unsigned int size, i, n, p;
521 u32 *interval;
522 u16 psize;
523 int ret = -EINVAL;
524
525 if (intf->cur_altsetting->desc.bInterfaceSubClass
526 != UVC_SC_VIDEOSTREAMING) {
527 uvc_dbg(dev, DESCR,
528 "device %d interface %d isn't a video streaming interface\n",
529 dev->udev->devnum,
530 intf->altsetting[0].desc.bInterfaceNumber);
531 return -EINVAL;
532 }
533
534 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
535 uvc_dbg(dev, DESCR,
536 "device %d interface %d is already claimed\n",
537 dev->udev->devnum,
538 intf->altsetting[0].desc.bInterfaceNumber);
539 return -EINVAL;
540 }
541
542 streaming = uvc_stream_new(dev, intf);
543 if (streaming == NULL) {
544 usb_driver_release_interface(&uvc_driver.driver, intf);
545 return -ENOMEM;
546 }
547
548 /*
549 * The Pico iMage webcam has its class-specific interface descriptors
550 * after the endpoint descriptors.
551 */
552 if (buflen == 0) {
553 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
554 struct usb_host_endpoint *ep = &alts->endpoint[i];
555
556 if (ep->extralen == 0)
557 continue;
558
559 if (ep->extralen > 2 &&
560 ep->extra[1] == USB_DT_CS_INTERFACE) {
561 uvc_dbg(dev, DESCR,
562 "trying extra data from endpoint %u\n",
563 i);
564 buffer = alts->endpoint[i].extra;
565 buflen = alts->endpoint[i].extralen;
566 break;
567 }
568 }
569 }
570
571 /* Skip the standard interface descriptors. */
572 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
573 buflen -= buffer[0];
574 buffer += buffer[0];
575 }
576
577 if (buflen <= 2) {
578 uvc_dbg(dev, DESCR,
579 "no class-specific streaming interface descriptors found\n");
580 goto error;
581 }
582
583 /* Parse the header descriptor. */
584 switch (buffer[2]) {
585 case UVC_VS_OUTPUT_HEADER:
586 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
587 size = 9;
588 break;
589
590 case UVC_VS_INPUT_HEADER:
591 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
592 size = 13;
593 break;
594
595 default:
596 uvc_dbg(dev, DESCR,
597 "device %d videostreaming interface %d HEADER descriptor not found\n",
598 dev->udev->devnum, alts->desc.bInterfaceNumber);
599 goto error;
600 }
601
602 p = buflen >= 4 ? buffer[3] : 0;
603 n = buflen >= size ? buffer[size-1] : 0;
604
605 if (buflen < size + p*n) {
606 uvc_dbg(dev, DESCR,
607 "device %d videostreaming interface %d HEADER descriptor is invalid\n",
608 dev->udev->devnum, alts->desc.bInterfaceNumber);
609 goto error;
610 }
611
612 streaming->header.bNumFormats = p;
613 streaming->header.bEndpointAddress = buffer[6];
614 if (buffer[2] == UVC_VS_INPUT_HEADER) {
615 streaming->header.bmInfo = buffer[7];
616 streaming->header.bTerminalLink = buffer[8];
617 streaming->header.bStillCaptureMethod = buffer[9];
618 streaming->header.bTriggerSupport = buffer[10];
619 streaming->header.bTriggerUsage = buffer[11];
620 } else {
621 streaming->header.bTerminalLink = buffer[7];
622 }
623 streaming->header.bControlSize = n;
624
625 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
626 GFP_KERNEL);
627 if (streaming->header.bmaControls == NULL) {
628 ret = -ENOMEM;
629 goto error;
630 }
631
632 buflen -= buffer[0];
633 buffer += buffer[0];
634
635 _buffer = buffer;
636 _buflen = buflen;
637
638 /* Count the format and frame descriptors. */
639 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
640 switch (_buffer[2]) {
641 case UVC_VS_FORMAT_UNCOMPRESSED:
642 case UVC_VS_FORMAT_MJPEG:
643 case UVC_VS_FORMAT_FRAME_BASED:
644 nformats++;
645 break;
646
647 case UVC_VS_FORMAT_DV:
648 /*
649 * DV format has no frame descriptor. We will create a
650 * dummy frame descriptor with a dummy frame interval.
651 */
652 nformats++;
653 nframes++;
654 nintervals++;
655 break;
656
657 case UVC_VS_FORMAT_MPEG2TS:
658 case UVC_VS_FORMAT_STREAM_BASED:
659 uvc_dbg(dev, DESCR,
660 "device %d videostreaming interface %d FORMAT %u is not supported\n",
661 dev->udev->devnum,
662 alts->desc.bInterfaceNumber, _buffer[2]);
663 break;
664
665 case UVC_VS_FRAME_UNCOMPRESSED:
666 case UVC_VS_FRAME_MJPEG:
667 nframes++;
668 if (_buflen > 25)
669 nintervals += _buffer[25] ? _buffer[25] : 3;
670 break;
671
672 case UVC_VS_FRAME_FRAME_BASED:
673 nframes++;
674 if (_buflen > 21)
675 nintervals += _buffer[21] ? _buffer[21] : 3;
676 break;
677 }
678
679 _buflen -= _buffer[0];
680 _buffer += _buffer[0];
681 }
682
683 if (nformats == 0) {
684 uvc_dbg(dev, DESCR,
685 "device %d videostreaming interface %d has no supported formats defined\n",
686 dev->udev->devnum, alts->desc.bInterfaceNumber);
687 goto error;
688 }
689
690 size = nformats * sizeof(*format) + nframes * sizeof(*frame)
691 + nintervals * sizeof(*interval);
692 format = kzalloc(size, GFP_KERNEL);
693 if (format == NULL) {
694 ret = -ENOMEM;
695 goto error;
696 }
697
698 frame = (struct uvc_frame *)&format[nformats];
699 interval = (u32 *)&frame[nframes];
700
701 streaming->formats = format;
702 streaming->nformats = 0;
703
704 /* Parse the format descriptors. */
705 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
706 switch (buffer[2]) {
707 case UVC_VS_FORMAT_UNCOMPRESSED:
708 case UVC_VS_FORMAT_MJPEG:
709 case UVC_VS_FORMAT_DV:
710 case UVC_VS_FORMAT_FRAME_BASED:
711 ret = uvc_parse_format(dev, streaming, format, frame,
712 &interval, buffer, buflen);
713 if (ret < 0)
714 goto error;
715 if (!ret)
716 break;
717
718 streaming->nformats++;
719 frame += format->nframes;
720 format++;
721
722 buflen -= ret;
723 buffer += ret;
724 continue;
725
726 default:
727 break;
728 }
729
730 buflen -= buffer[0];
731 buffer += buffer[0];
732 }
733
734 if (buflen)
735 uvc_dbg(dev, DESCR,
736 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
737 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
738
739 /* Parse the alternate settings to find the maximum bandwidth. */
740 for (i = 0; i < intf->num_altsetting; ++i) {
741 struct usb_host_endpoint *ep;
742
743 alts = &intf->altsetting[i];
744 ep = uvc_find_endpoint(alts,
745 streaming->header.bEndpointAddress);
746 if (ep == NULL)
747 continue;
748 psize = uvc_endpoint_max_bpi(dev->udev, ep);
749 if (psize > streaming->maxpsize)
750 streaming->maxpsize = psize;
751 }
752
753 list_add_tail(&streaming->list, &dev->streams);
754 return 0;
755
756 error:
757 usb_driver_release_interface(&uvc_driver.driver, intf);
758 uvc_stream_delete(streaming);
759 return ret;
760 }
761
762 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
763 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER;
764 static const u8 uvc_media_transport_input_guid[16] =
765 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
766 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
767
uvc_alloc_entity(u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)768 static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id,
769 unsigned int num_pads, unsigned int extra_size)
770 {
771 struct uvc_entity *entity;
772 unsigned int num_inputs;
773 unsigned int size;
774 unsigned int i;
775
776 extra_size = roundup(extra_size, sizeof(*entity->pads));
777 if (num_pads)
778 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
779 else
780 num_inputs = 0;
781 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
782 + num_inputs;
783 entity = kzalloc(size, GFP_KERNEL);
784 if (entity == NULL)
785 return NULL;
786
787 entity->id = id;
788 entity->type = type;
789
790 /*
791 * Set the GUID for standard entity types. For extension units, the GUID
792 * is initialized by the caller.
793 */
794 switch (type) {
795 case UVC_EXT_GPIO_UNIT:
796 memcpy(entity->guid, uvc_gpio_guid, 16);
797 break;
798 case UVC_ITT_CAMERA:
799 memcpy(entity->guid, uvc_camera_guid, 16);
800 break;
801 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
802 memcpy(entity->guid, uvc_media_transport_input_guid, 16);
803 break;
804 case UVC_VC_PROCESSING_UNIT:
805 memcpy(entity->guid, uvc_processing_guid, 16);
806 break;
807 }
808
809 entity->num_links = 0;
810 entity->num_pads = num_pads;
811 entity->pads = ((void *)(entity + 1)) + extra_size;
812
813 for (i = 0; i < num_inputs; ++i)
814 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
815 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
816 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
817
818 entity->bNrInPins = num_inputs;
819 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
820
821 return entity;
822 }
823
uvc_entity_set_name(struct uvc_device * dev,struct uvc_entity * entity,const char * type_name,u8 string_id)824 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity,
825 const char *type_name, u8 string_id)
826 {
827 int ret;
828
829 /*
830 * First attempt to read the entity name from the device. If the entity
831 * has no associated string, or if reading the string fails (most
832 * likely due to a buggy firmware), fall back to default names based on
833 * the entity type.
834 */
835 if (string_id) {
836 ret = usb_string(dev->udev, string_id, entity->name,
837 sizeof(entity->name));
838 if (!ret)
839 return;
840 }
841
842 sprintf(entity->name, "%s %u", type_name, entity->id);
843 }
844
845 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)846 static int uvc_parse_vendor_control(struct uvc_device *dev,
847 const unsigned char *buffer, int buflen)
848 {
849 struct usb_device *udev = dev->udev;
850 struct usb_host_interface *alts = dev->intf->cur_altsetting;
851 struct uvc_entity *unit;
852 unsigned int n, p;
853 int handled = 0;
854
855 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
856 case 0x046d: /* Logitech */
857 if (buffer[1] != 0x41 || buffer[2] != 0x01)
858 break;
859
860 /*
861 * Logitech implements several vendor specific functions
862 * through vendor specific extension units (LXU).
863 *
864 * The LXU descriptors are similar to XU descriptors
865 * (see "USB Device Video Class for Video Devices", section
866 * 3.7.2.6 "Extension Unit Descriptor") with the following
867 * differences:
868 *
869 * ----------------------------------------------------------
870 * 0 bLength 1 Number
871 * Size of this descriptor, in bytes: 24+p+n*2
872 * ----------------------------------------------------------
873 * 23+p+n bmControlsType N Bitmap
874 * Individual bits in the set are defined:
875 * 0: Absolute
876 * 1: Relative
877 *
878 * This bitset is mapped exactly the same as bmControls.
879 * ----------------------------------------------------------
880 * 23+p+n*2 bReserved 1 Boolean
881 * ----------------------------------------------------------
882 * 24+p+n*2 iExtension 1 Index
883 * Index of a string descriptor that describes this
884 * extension unit.
885 * ----------------------------------------------------------
886 */
887 p = buflen >= 22 ? buffer[21] : 0;
888 n = buflen >= 25 + p ? buffer[22+p] : 0;
889
890 if (buflen < 25 + p + 2*n) {
891 uvc_dbg(dev, DESCR,
892 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
893 udev->devnum, alts->desc.bInterfaceNumber);
894 break;
895 }
896
897 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
898 p + 1, 2*n);
899 if (unit == NULL)
900 return -ENOMEM;
901
902 memcpy(unit->guid, &buffer[4], 16);
903 unit->extension.bNumControls = buffer[20];
904 memcpy(unit->baSourceID, &buffer[22], p);
905 unit->extension.bControlSize = buffer[22+p];
906 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
907 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
908 + n;
909 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
910
911 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]);
912
913 list_add_tail(&unit->list, &dev->entities);
914 handled = 1;
915 break;
916 }
917
918 return handled;
919 }
920
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)921 static int uvc_parse_standard_control(struct uvc_device *dev,
922 const unsigned char *buffer, int buflen)
923 {
924 struct usb_device *udev = dev->udev;
925 struct uvc_entity *unit, *term;
926 struct usb_interface *intf;
927 struct usb_host_interface *alts = dev->intf->cur_altsetting;
928 unsigned int i, n, p, len;
929 const char *type_name;
930 u16 type;
931
932 switch (buffer[2]) {
933 case UVC_VC_HEADER:
934 n = buflen >= 12 ? buffer[11] : 0;
935
936 if (buflen < 12 + n) {
937 uvc_dbg(dev, DESCR,
938 "device %d videocontrol interface %d HEADER error\n",
939 udev->devnum, alts->desc.bInterfaceNumber);
940 return -EINVAL;
941 }
942
943 dev->uvc_version = get_unaligned_le16(&buffer[3]);
944 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
945
946 /* Parse all USB Video Streaming interfaces. */
947 for (i = 0; i < n; ++i) {
948 intf = usb_ifnum_to_if(udev, buffer[12+i]);
949 if (intf == NULL) {
950 uvc_dbg(dev, DESCR,
951 "device %d interface %d doesn't exists\n",
952 udev->devnum, i);
953 continue;
954 }
955
956 uvc_parse_streaming(dev, intf);
957 }
958 break;
959
960 case UVC_VC_INPUT_TERMINAL:
961 if (buflen < 8) {
962 uvc_dbg(dev, DESCR,
963 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
964 udev->devnum, alts->desc.bInterfaceNumber);
965 return -EINVAL;
966 }
967
968 /*
969 * Reject invalid terminal types that would cause issues:
970 *
971 * - The high byte must be non-zero, otherwise it would be
972 * confused with a unit.
973 *
974 * - Bit 15 must be 0, as we use it internally as a terminal
975 * direction flag.
976 *
977 * Other unknown types are accepted.
978 */
979 type = get_unaligned_le16(&buffer[4]);
980 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
981 uvc_dbg(dev, DESCR,
982 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
983 udev->devnum, alts->desc.bInterfaceNumber,
984 buffer[3], type);
985 return 0;
986 }
987
988 n = 0;
989 p = 0;
990 len = 8;
991
992 if (type == UVC_ITT_CAMERA) {
993 n = buflen >= 15 ? buffer[14] : 0;
994 len = 15;
995
996 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
997 n = buflen >= 9 ? buffer[8] : 0;
998 p = buflen >= 10 + n ? buffer[9+n] : 0;
999 len = 10;
1000 }
1001
1002 if (buflen < len + n + p) {
1003 uvc_dbg(dev, DESCR,
1004 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
1005 udev->devnum, alts->desc.bInterfaceNumber);
1006 return -EINVAL;
1007 }
1008
1009 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
1010 1, n + p);
1011 if (term == NULL)
1012 return -ENOMEM;
1013
1014 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1015 term->camera.bControlSize = n;
1016 term->camera.bmControls = (u8 *)term + sizeof(*term);
1017 term->camera.wObjectiveFocalLengthMin =
1018 get_unaligned_le16(&buffer[8]);
1019 term->camera.wObjectiveFocalLengthMax =
1020 get_unaligned_le16(&buffer[10]);
1021 term->camera.wOcularFocalLength =
1022 get_unaligned_le16(&buffer[12]);
1023 memcpy(term->camera.bmControls, &buffer[15], n);
1024 } else if (UVC_ENTITY_TYPE(term) ==
1025 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1026 term->media.bControlSize = n;
1027 term->media.bmControls = (u8 *)term + sizeof(*term);
1028 term->media.bTransportModeSize = p;
1029 term->media.bmTransportModes = (u8 *)term
1030 + sizeof(*term) + n;
1031 memcpy(term->media.bmControls, &buffer[9], n);
1032 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1033 }
1034
1035 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1036 type_name = "Camera";
1037 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1038 type_name = "Media";
1039 else
1040 type_name = "Input";
1041
1042 uvc_entity_set_name(dev, term, type_name, buffer[7]);
1043
1044 list_add_tail(&term->list, &dev->entities);
1045 break;
1046
1047 case UVC_VC_OUTPUT_TERMINAL:
1048 if (buflen < 9) {
1049 uvc_dbg(dev, DESCR,
1050 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
1051 udev->devnum, alts->desc.bInterfaceNumber);
1052 return -EINVAL;
1053 }
1054
1055 /*
1056 * Make sure the terminal type MSB is not null, otherwise it
1057 * could be confused with a unit.
1058 */
1059 type = get_unaligned_le16(&buffer[4]);
1060 if ((type & 0xff00) == 0) {
1061 uvc_dbg(dev, DESCR,
1062 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1063 udev->devnum, alts->desc.bInterfaceNumber,
1064 buffer[3], type);
1065 return 0;
1066 }
1067
1068 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
1069 1, 0);
1070 if (term == NULL)
1071 return -ENOMEM;
1072
1073 memcpy(term->baSourceID, &buffer[7], 1);
1074
1075 uvc_entity_set_name(dev, term, "Output", buffer[8]);
1076
1077 list_add_tail(&term->list, &dev->entities);
1078 break;
1079
1080 case UVC_VC_SELECTOR_UNIT:
1081 p = buflen >= 5 ? buffer[4] : 0;
1082
1083 if (buflen < 5 || buflen < 6 + p) {
1084 uvc_dbg(dev, DESCR,
1085 "device %d videocontrol interface %d SELECTOR_UNIT error\n",
1086 udev->devnum, alts->desc.bInterfaceNumber);
1087 return -EINVAL;
1088 }
1089
1090 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
1091 if (unit == NULL)
1092 return -ENOMEM;
1093
1094 memcpy(unit->baSourceID, &buffer[5], p);
1095
1096 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]);
1097
1098 list_add_tail(&unit->list, &dev->entities);
1099 break;
1100
1101 case UVC_VC_PROCESSING_UNIT:
1102 n = buflen >= 8 ? buffer[7] : 0;
1103 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1104
1105 if (buflen < p + n) {
1106 uvc_dbg(dev, DESCR,
1107 "device %d videocontrol interface %d PROCESSING_UNIT error\n",
1108 udev->devnum, alts->desc.bInterfaceNumber);
1109 return -EINVAL;
1110 }
1111
1112 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
1113 if (unit == NULL)
1114 return -ENOMEM;
1115
1116 memcpy(unit->baSourceID, &buffer[4], 1);
1117 unit->processing.wMaxMultiplier =
1118 get_unaligned_le16(&buffer[5]);
1119 unit->processing.bControlSize = buffer[7];
1120 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1121 memcpy(unit->processing.bmControls, &buffer[8], n);
1122 if (dev->uvc_version >= 0x0110)
1123 unit->processing.bmVideoStandards = buffer[9+n];
1124
1125 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]);
1126
1127 list_add_tail(&unit->list, &dev->entities);
1128 break;
1129
1130 case UVC_VC_EXTENSION_UNIT:
1131 p = buflen >= 22 ? buffer[21] : 0;
1132 n = buflen >= 24 + p ? buffer[22+p] : 0;
1133
1134 if (buflen < 24 + p + n) {
1135 uvc_dbg(dev, DESCR,
1136 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
1137 udev->devnum, alts->desc.bInterfaceNumber);
1138 return -EINVAL;
1139 }
1140
1141 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 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 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1151
1152 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]);
1153
1154 list_add_tail(&unit->list, &dev->entities);
1155 break;
1156
1157 default:
1158 uvc_dbg(dev, DESCR,
1159 "Found an unknown CS_INTERFACE descriptor (%u)\n",
1160 buffer[2]);
1161 break;
1162 }
1163
1164 return 0;
1165 }
1166
uvc_parse_control(struct uvc_device * dev)1167 static int uvc_parse_control(struct uvc_device *dev)
1168 {
1169 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1170 const unsigned char *buffer = alts->extra;
1171 int buflen = alts->extralen;
1172 int ret;
1173
1174 /*
1175 * Parse the default alternate setting only, as the UVC specification
1176 * defines a single alternate setting, the default alternate setting
1177 * zero.
1178 */
1179
1180 while (buflen > 2) {
1181 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1182 buffer[1] != USB_DT_CS_INTERFACE)
1183 goto next_descriptor;
1184
1185 ret = uvc_parse_standard_control(dev, buffer, buflen);
1186 if (ret < 0)
1187 return ret;
1188
1189 next_descriptor:
1190 buflen -= buffer[0];
1191 buffer += buffer[0];
1192 }
1193
1194 /*
1195 * Check if the optional status endpoint is present. Built-in iSight
1196 * webcams have an interrupt endpoint but spit proprietary data that
1197 * don't conform to the UVC status endpoint messages. Don't try to
1198 * handle the interrupt endpoint for those cameras.
1199 */
1200 if (alts->desc.bNumEndpoints == 1 &&
1201 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1202 struct usb_host_endpoint *ep = &alts->endpoint[0];
1203 struct usb_endpoint_descriptor *desc = &ep->desc;
1204
1205 if (usb_endpoint_is_int_in(desc) &&
1206 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1207 desc->bInterval != 0) {
1208 uvc_dbg(dev, DESCR,
1209 "Found a Status endpoint (addr %02x)\n",
1210 desc->bEndpointAddress);
1211 dev->int_ep = ep;
1212 }
1213 }
1214
1215 return 0;
1216 }
1217
1218 /* -----------------------------------------------------------------------------
1219 * Privacy GPIO
1220 */
1221
uvc_gpio_event(struct uvc_device * dev)1222 static void uvc_gpio_event(struct uvc_device *dev)
1223 {
1224 struct uvc_entity *unit = dev->gpio_unit;
1225 struct uvc_video_chain *chain;
1226 u8 new_val;
1227
1228 if (!unit)
1229 return;
1230
1231 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy);
1232
1233 /* GPIO entities are always on the first chain. */
1234 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list);
1235 uvc_ctrl_status_event(chain, unit->controls, &new_val);
1236 }
1237
uvc_gpio_get_cur(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,void * data,u16 size)1238 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity,
1239 u8 cs, void *data, u16 size)
1240 {
1241 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1)
1242 return -EINVAL;
1243
1244 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy);
1245
1246 return 0;
1247 }
1248
uvc_gpio_get_info(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,u8 * caps)1249 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity,
1250 u8 cs, u8 *caps)
1251 {
1252 if (cs != UVC_CT_PRIVACY_CONTROL)
1253 return -EINVAL;
1254
1255 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE;
1256 return 0;
1257 }
1258
uvc_gpio_irq(int irq,void * data)1259 static irqreturn_t uvc_gpio_irq(int irq, void *data)
1260 {
1261 struct uvc_device *dev = data;
1262
1263 uvc_gpio_event(dev);
1264 return IRQ_HANDLED;
1265 }
1266
uvc_gpio_parse(struct uvc_device * dev)1267 static int uvc_gpio_parse(struct uvc_device *dev)
1268 {
1269 struct uvc_entity *unit;
1270 struct gpio_desc *gpio_privacy;
1271 int irq;
1272
1273 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy",
1274 GPIOD_IN);
1275 if (IS_ERR_OR_NULL(gpio_privacy))
1276 return PTR_ERR_OR_ZERO(gpio_privacy);
1277
1278 irq = gpiod_to_irq(gpio_privacy);
1279 if (irq < 0)
1280 return dev_err_probe(&dev->udev->dev, irq,
1281 "No IRQ for privacy GPIO\n");
1282
1283 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1);
1284 if (!unit)
1285 return -ENOMEM;
1286
1287 unit->gpio.gpio_privacy = gpio_privacy;
1288 unit->gpio.irq = irq;
1289 unit->gpio.bControlSize = 1;
1290 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit);
1291 unit->gpio.bmControls[0] = 1;
1292 unit->get_cur = uvc_gpio_get_cur;
1293 unit->get_info = uvc_gpio_get_info;
1294 strscpy(unit->name, "GPIO", sizeof(unit->name));
1295
1296 list_add_tail(&unit->list, &dev->entities);
1297
1298 dev->gpio_unit = unit;
1299
1300 return 0;
1301 }
1302
uvc_gpio_init_irq(struct uvc_device * dev)1303 static int uvc_gpio_init_irq(struct uvc_device *dev)
1304 {
1305 struct uvc_entity *unit = dev->gpio_unit;
1306
1307 if (!unit || unit->gpio.irq < 0)
1308 return 0;
1309
1310 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL,
1311 uvc_gpio_irq,
1312 IRQF_ONESHOT | IRQF_TRIGGER_FALLING |
1313 IRQF_TRIGGER_RISING,
1314 "uvc_privacy_gpio", dev);
1315 }
1316
1317 /* ------------------------------------------------------------------------
1318 * UVC device scan
1319 */
1320
1321 /*
1322 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1323 * and containing the following units:
1324 *
1325 * - one or more Output Terminals (USB Streaming or Display)
1326 * - zero or one Processing Unit
1327 * - zero, one or more single-input Selector Units
1328 * - zero or one multiple-input Selector Units, provided all inputs are
1329 * connected to input terminals
1330 * - zero, one or mode single-input Extension Units
1331 * - one or more Input Terminals (Camera, External or USB Streaming)
1332 *
1333 * The terminal and units must match on of the following structures:
1334 *
1335 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1336 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1337 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1338 *
1339 * +---------+ +---------+ -> OTT_*(0)
1340 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1341 * +---------+ +---------+ -> OTT_*(n)
1342 *
1343 * The Processing Unit and Extension Units can be in any order. Additional
1344 * Extension Units connected to the main chain as single-unit branches are
1345 * also supported. Single-input Selector Units are ignored.
1346 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1347 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1348 struct uvc_entity *entity)
1349 {
1350 switch (UVC_ENTITY_TYPE(entity)) {
1351 case UVC_VC_EXTENSION_UNIT:
1352 uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
1353
1354 if (entity->bNrInPins != 1) {
1355 uvc_dbg(chain->dev, DESCR,
1356 "Extension unit %d has more than 1 input pin\n",
1357 entity->id);
1358 return -1;
1359 }
1360
1361 break;
1362
1363 case UVC_VC_PROCESSING_UNIT:
1364 uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
1365
1366 if (chain->processing != NULL) {
1367 uvc_dbg(chain->dev, DESCR,
1368 "Found multiple Processing Units in chain\n");
1369 return -1;
1370 }
1371
1372 chain->processing = entity;
1373 break;
1374
1375 case UVC_VC_SELECTOR_UNIT:
1376 uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
1377
1378 /* Single-input selector units are ignored. */
1379 if (entity->bNrInPins == 1)
1380 break;
1381
1382 if (chain->selector != NULL) {
1383 uvc_dbg(chain->dev, DESCR,
1384 "Found multiple Selector Units in chain\n");
1385 return -1;
1386 }
1387
1388 chain->selector = entity;
1389 break;
1390
1391 case UVC_ITT_VENDOR_SPECIFIC:
1392 case UVC_ITT_CAMERA:
1393 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1394 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1395
1396 break;
1397
1398 case UVC_OTT_VENDOR_SPECIFIC:
1399 case UVC_OTT_DISPLAY:
1400 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1401 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1402
1403 break;
1404
1405 case UVC_TT_STREAMING:
1406 if (UVC_ENTITY_IS_ITERM(entity))
1407 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1408 else
1409 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1410
1411 break;
1412
1413 default:
1414 uvc_dbg(chain->dev, DESCR,
1415 "Unsupported entity type 0x%04x found in chain\n",
1416 UVC_ENTITY_TYPE(entity));
1417 return -1;
1418 }
1419
1420 list_add_tail(&entity->chain, &chain->entities);
1421 return 0;
1422 }
1423
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1424 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1425 struct uvc_entity *entity, struct uvc_entity *prev)
1426 {
1427 struct uvc_entity *forward;
1428 int found;
1429
1430 /* Forward scan */
1431 forward = NULL;
1432 found = 0;
1433
1434 while (1) {
1435 forward = uvc_entity_by_reference(chain->dev, entity->id,
1436 forward);
1437 if (forward == NULL)
1438 break;
1439 if (forward == prev)
1440 continue;
1441 if (forward->chain.next || forward->chain.prev) {
1442 uvc_dbg(chain->dev, DESCR,
1443 "Found reference to entity %d already in chain\n",
1444 forward->id);
1445 return -EINVAL;
1446 }
1447
1448 switch (UVC_ENTITY_TYPE(forward)) {
1449 case UVC_VC_EXTENSION_UNIT:
1450 if (forward->bNrInPins != 1) {
1451 uvc_dbg(chain->dev, DESCR,
1452 "Extension unit %d has more than 1 input pin\n",
1453 forward->id);
1454 return -EINVAL;
1455 }
1456
1457 /*
1458 * Some devices reference an output terminal as the
1459 * source of extension units. This is incorrect, as
1460 * output terminals only have an input pin, and thus
1461 * can't be connected to any entity in the forward
1462 * direction. The resulting topology would cause issues
1463 * when registering the media controller graph. To
1464 * avoid this problem, connect the extension unit to
1465 * the source of the output terminal instead.
1466 */
1467 if (UVC_ENTITY_IS_OTERM(entity)) {
1468 struct uvc_entity *source;
1469
1470 source = uvc_entity_by_id(chain->dev,
1471 entity->baSourceID[0]);
1472 if (!source) {
1473 uvc_dbg(chain->dev, DESCR,
1474 "Can't connect extension unit %u in chain\n",
1475 forward->id);
1476 break;
1477 }
1478
1479 forward->baSourceID[0] = source->id;
1480 }
1481
1482 list_add_tail(&forward->chain, &chain->entities);
1483 if (!found)
1484 uvc_dbg_cont(PROBE, " (->");
1485
1486 uvc_dbg_cont(PROBE, " XU %d", forward->id);
1487 found = 1;
1488 break;
1489
1490 case UVC_OTT_VENDOR_SPECIFIC:
1491 case UVC_OTT_DISPLAY:
1492 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1493 case UVC_TT_STREAMING:
1494 if (UVC_ENTITY_IS_ITERM(forward)) {
1495 uvc_dbg(chain->dev, DESCR,
1496 "Unsupported input terminal %u\n",
1497 forward->id);
1498 return -EINVAL;
1499 }
1500
1501 if (UVC_ENTITY_IS_OTERM(entity)) {
1502 uvc_dbg(chain->dev, DESCR,
1503 "Unsupported connection between output terminals %u and %u\n",
1504 entity->id, forward->id);
1505 break;
1506 }
1507
1508 list_add_tail(&forward->chain, &chain->entities);
1509 if (!found)
1510 uvc_dbg_cont(PROBE, " (->");
1511
1512 uvc_dbg_cont(PROBE, " OT %d", forward->id);
1513 found = 1;
1514 break;
1515 }
1516 }
1517 if (found)
1518 uvc_dbg_cont(PROBE, ")");
1519
1520 return 0;
1521 }
1522
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1523 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1524 struct uvc_entity **_entity)
1525 {
1526 struct uvc_entity *entity = *_entity;
1527 struct uvc_entity *term;
1528 int id = -EINVAL, i;
1529
1530 switch (UVC_ENTITY_TYPE(entity)) {
1531 case UVC_VC_EXTENSION_UNIT:
1532 case UVC_VC_PROCESSING_UNIT:
1533 id = entity->baSourceID[0];
1534 break;
1535
1536 case UVC_VC_SELECTOR_UNIT:
1537 /* Single-input selector units are ignored. */
1538 if (entity->bNrInPins == 1) {
1539 id = entity->baSourceID[0];
1540 break;
1541 }
1542
1543 uvc_dbg_cont(PROBE, " <- IT");
1544
1545 chain->selector = entity;
1546 for (i = 0; i < entity->bNrInPins; ++i) {
1547 id = entity->baSourceID[i];
1548 term = uvc_entity_by_id(chain->dev, id);
1549 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1550 uvc_dbg(chain->dev, DESCR,
1551 "Selector unit %d input %d isn't connected to an input terminal\n",
1552 entity->id, i);
1553 return -1;
1554 }
1555
1556 if (term->chain.next || term->chain.prev) {
1557 uvc_dbg(chain->dev, DESCR,
1558 "Found reference to entity %d already in chain\n",
1559 term->id);
1560 return -EINVAL;
1561 }
1562
1563 uvc_dbg_cont(PROBE, " %d", term->id);
1564
1565 list_add_tail(&term->chain, &chain->entities);
1566 uvc_scan_chain_forward(chain, term, entity);
1567 }
1568
1569 uvc_dbg_cont(PROBE, "\n");
1570
1571 id = 0;
1572 break;
1573
1574 case UVC_ITT_VENDOR_SPECIFIC:
1575 case UVC_ITT_CAMERA:
1576 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1577 case UVC_OTT_VENDOR_SPECIFIC:
1578 case UVC_OTT_DISPLAY:
1579 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1580 case UVC_TT_STREAMING:
1581 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1582 break;
1583 }
1584
1585 if (id <= 0) {
1586 *_entity = NULL;
1587 return id;
1588 }
1589
1590 entity = uvc_entity_by_id(chain->dev, id);
1591 if (entity == NULL) {
1592 uvc_dbg(chain->dev, DESCR,
1593 "Found reference to unknown entity %d\n", id);
1594 return -EINVAL;
1595 }
1596
1597 *_entity = entity;
1598 return 0;
1599 }
1600
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1601 static int uvc_scan_chain(struct uvc_video_chain *chain,
1602 struct uvc_entity *term)
1603 {
1604 struct uvc_entity *entity, *prev;
1605
1606 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
1607
1608 entity = term;
1609 prev = NULL;
1610
1611 while (entity != NULL) {
1612 /* Entity must not be part of an existing chain */
1613 if (entity->chain.next || entity->chain.prev) {
1614 uvc_dbg(chain->dev, DESCR,
1615 "Found reference to entity %d already in chain\n",
1616 entity->id);
1617 return -EINVAL;
1618 }
1619
1620 /* Process entity */
1621 if (uvc_scan_chain_entity(chain, entity) < 0)
1622 return -EINVAL;
1623
1624 /* Forward scan */
1625 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1626 return -EINVAL;
1627
1628 /* Backward scan */
1629 prev = entity;
1630 if (uvc_scan_chain_backward(chain, &entity) < 0)
1631 return -EINVAL;
1632 }
1633
1634 return 0;
1635 }
1636
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1637 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1638 char *buffer)
1639 {
1640 struct uvc_entity *term;
1641 unsigned int nterms = 0;
1642 char *p = buffer;
1643
1644 list_for_each_entry(term, terms, chain) {
1645 if (!UVC_ENTITY_IS_TERM(term) ||
1646 UVC_TERM_DIRECTION(term) != dir)
1647 continue;
1648
1649 if (nterms)
1650 p += sprintf(p, ",");
1651 if (++nterms >= 4) {
1652 p += sprintf(p, "...");
1653 break;
1654 }
1655 p += sprintf(p, "%u", term->id);
1656 }
1657
1658 return p - buffer;
1659 }
1660
uvc_print_chain(struct uvc_video_chain * chain)1661 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1662 {
1663 static char buffer[43];
1664 char *p = buffer;
1665
1666 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1667 p += sprintf(p, " -> ");
1668 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1669
1670 return buffer;
1671 }
1672
uvc_alloc_chain(struct uvc_device * dev)1673 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1674 {
1675 struct uvc_video_chain *chain;
1676
1677 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1678 if (chain == NULL)
1679 return NULL;
1680
1681 INIT_LIST_HEAD(&chain->entities);
1682 mutex_init(&chain->ctrl_mutex);
1683 chain->dev = dev;
1684 v4l2_prio_init(&chain->prio);
1685
1686 return chain;
1687 }
1688
1689 /*
1690 * Fallback heuristic for devices that don't connect units and terminals in a
1691 * valid chain.
1692 *
1693 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1694 * to fail, but if we just take the entities we can find and put them together
1695 * in the most sensible chain we can think of, turns out they do work anyway.
1696 * Note: This heuristic assumes there is a single chain.
1697 *
1698 * At the time of writing, devices known to have such a broken chain are
1699 * - Acer Integrated Camera (5986:055a)
1700 * - Realtek rtl157a7 (0bda:57a7)
1701 */
uvc_scan_fallback(struct uvc_device * dev)1702 static int uvc_scan_fallback(struct uvc_device *dev)
1703 {
1704 struct uvc_video_chain *chain;
1705 struct uvc_entity *iterm = NULL;
1706 struct uvc_entity *oterm = NULL;
1707 struct uvc_entity *entity;
1708 struct uvc_entity *prev;
1709
1710 /*
1711 * Start by locating the input and output terminals. We only support
1712 * devices with exactly one of each for now.
1713 */
1714 list_for_each_entry(entity, &dev->entities, list) {
1715 if (UVC_ENTITY_IS_ITERM(entity)) {
1716 if (iterm)
1717 return -EINVAL;
1718 iterm = entity;
1719 }
1720
1721 if (UVC_ENTITY_IS_OTERM(entity)) {
1722 if (oterm)
1723 return -EINVAL;
1724 oterm = entity;
1725 }
1726 }
1727
1728 if (iterm == NULL || oterm == NULL)
1729 return -EINVAL;
1730
1731 /* Allocate the chain and fill it. */
1732 chain = uvc_alloc_chain(dev);
1733 if (chain == NULL)
1734 return -ENOMEM;
1735
1736 if (uvc_scan_chain_entity(chain, oterm) < 0)
1737 goto error;
1738
1739 prev = oterm;
1740
1741 /*
1742 * Add all Processing and Extension Units with two pads. The order
1743 * doesn't matter much, use reverse list traversal to connect units in
1744 * UVC descriptor order as we build the chain from output to input. This
1745 * leads to units appearing in the order meant by the manufacturer for
1746 * the cameras known to require this heuristic.
1747 */
1748 list_for_each_entry_reverse(entity, &dev->entities, list) {
1749 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1750 entity->type != UVC_VC_EXTENSION_UNIT)
1751 continue;
1752
1753 if (entity->num_pads != 2)
1754 continue;
1755
1756 if (uvc_scan_chain_entity(chain, entity) < 0)
1757 goto error;
1758
1759 prev->baSourceID[0] = entity->id;
1760 prev = entity;
1761 }
1762
1763 if (uvc_scan_chain_entity(chain, iterm) < 0)
1764 goto error;
1765
1766 prev->baSourceID[0] = iterm->id;
1767
1768 list_add_tail(&chain->list, &dev->chains);
1769
1770 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
1771 uvc_print_chain(chain));
1772
1773 return 0;
1774
1775 error:
1776 kfree(chain);
1777 return -EINVAL;
1778 }
1779
1780 /*
1781 * Scan the device for video chains and register video devices.
1782 *
1783 * Chains are scanned starting at their output terminals and walked backwards.
1784 */
uvc_scan_device(struct uvc_device * dev)1785 static int uvc_scan_device(struct uvc_device *dev)
1786 {
1787 struct uvc_video_chain *chain;
1788 struct uvc_entity *term;
1789
1790 list_for_each_entry(term, &dev->entities, list) {
1791 if (!UVC_ENTITY_IS_OTERM(term))
1792 continue;
1793
1794 /*
1795 * If the terminal is already included in a chain, skip it.
1796 * This can happen for chains that have multiple output
1797 * terminals, where all output terminals beside the first one
1798 * will be inserted in the chain in forward scans.
1799 */
1800 if (term->chain.next || term->chain.prev)
1801 continue;
1802
1803 chain = uvc_alloc_chain(dev);
1804 if (chain == NULL)
1805 return -ENOMEM;
1806
1807 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1808
1809 if (uvc_scan_chain(chain, term) < 0) {
1810 kfree(chain);
1811 continue;
1812 }
1813
1814 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
1815 uvc_print_chain(chain));
1816
1817 list_add_tail(&chain->list, &dev->chains);
1818 }
1819
1820 if (list_empty(&dev->chains))
1821 uvc_scan_fallback(dev);
1822
1823 if (list_empty(&dev->chains)) {
1824 dev_info(&dev->udev->dev, "No valid video chain found.\n");
1825 return -1;
1826 }
1827
1828 /* Add GPIO entity to the first chain. */
1829 if (dev->gpio_unit) {
1830 chain = list_first_entry(&dev->chains,
1831 struct uvc_video_chain, list);
1832 list_add_tail(&dev->gpio_unit->chain, &chain->entities);
1833 }
1834
1835 return 0;
1836 }
1837
1838 /* ------------------------------------------------------------------------
1839 * Video device registration and unregistration
1840 */
1841
1842 /*
1843 * Delete the UVC device.
1844 *
1845 * Called by the kernel when the last reference to the uvc_device structure
1846 * is released.
1847 *
1848 * As this function is called after or during disconnect(), all URBs have
1849 * already been cancelled by the USB core. There is no need to kill the
1850 * interrupt URB manually.
1851 */
uvc_delete(struct kref * kref)1852 static void uvc_delete(struct kref *kref)
1853 {
1854 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1855 struct list_head *p, *n;
1856
1857 uvc_status_cleanup(dev);
1858 uvc_ctrl_cleanup_device(dev);
1859
1860 usb_put_intf(dev->intf);
1861 usb_put_dev(dev->udev);
1862
1863 #ifdef CONFIG_MEDIA_CONTROLLER
1864 media_device_cleanup(&dev->mdev);
1865 #endif
1866
1867 list_for_each_safe(p, n, &dev->chains) {
1868 struct uvc_video_chain *chain;
1869
1870 chain = list_entry(p, struct uvc_video_chain, list);
1871 kfree(chain);
1872 }
1873
1874 list_for_each_safe(p, n, &dev->entities) {
1875 struct uvc_entity *entity;
1876
1877 entity = list_entry(p, struct uvc_entity, list);
1878 #ifdef CONFIG_MEDIA_CONTROLLER
1879 uvc_mc_cleanup_entity(entity);
1880 #endif
1881 kfree(entity);
1882 }
1883
1884 list_for_each_safe(p, n, &dev->streams) {
1885 struct uvc_streaming *streaming;
1886
1887 streaming = list_entry(p, struct uvc_streaming, list);
1888 usb_driver_release_interface(&uvc_driver.driver,
1889 streaming->intf);
1890 uvc_stream_delete(streaming);
1891 }
1892
1893 kfree(dev);
1894 }
1895
uvc_release(struct video_device * vdev)1896 static void uvc_release(struct video_device *vdev)
1897 {
1898 struct uvc_streaming *stream = video_get_drvdata(vdev);
1899 struct uvc_device *dev = stream->dev;
1900
1901 kref_put(&dev->ref, uvc_delete);
1902 }
1903
1904 /*
1905 * Unregister the video devices.
1906 */
uvc_unregister_video(struct uvc_device * dev)1907 static void uvc_unregister_video(struct uvc_device *dev)
1908 {
1909 struct uvc_streaming *stream;
1910
1911 list_for_each_entry(stream, &dev->streams, list) {
1912 if (!video_is_registered(&stream->vdev))
1913 continue;
1914
1915 video_unregister_device(&stream->vdev);
1916 video_unregister_device(&stream->meta.vdev);
1917
1918 uvc_debugfs_cleanup_stream(stream);
1919 }
1920
1921 uvc_status_unregister(dev);
1922
1923 if (dev->vdev.dev)
1924 v4l2_device_unregister(&dev->vdev);
1925 #ifdef CONFIG_MEDIA_CONTROLLER
1926 if (media_devnode_is_registered(dev->mdev.devnode))
1927 media_device_unregister(&dev->mdev);
1928 #endif
1929 }
1930
uvc_register_video_device(struct uvc_device * dev,struct uvc_streaming * stream,struct video_device * vdev,struct uvc_video_queue * queue,enum v4l2_buf_type type,const struct v4l2_file_operations * fops,const struct v4l2_ioctl_ops * ioctl_ops)1931 int uvc_register_video_device(struct uvc_device *dev,
1932 struct uvc_streaming *stream,
1933 struct video_device *vdev,
1934 struct uvc_video_queue *queue,
1935 enum v4l2_buf_type type,
1936 const struct v4l2_file_operations *fops,
1937 const struct v4l2_ioctl_ops *ioctl_ops)
1938 {
1939 int ret;
1940
1941 /* Initialize the video buffers queue. */
1942 ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
1943 if (ret)
1944 return ret;
1945
1946 /* Register the device with V4L. */
1947
1948 /*
1949 * We already hold a reference to dev->udev. The video device will be
1950 * unregistered before the reference is released, so we don't need to
1951 * get another one.
1952 */
1953 vdev->v4l2_dev = &dev->vdev;
1954 vdev->fops = fops;
1955 vdev->ioctl_ops = ioctl_ops;
1956 vdev->release = uvc_release;
1957 vdev->prio = &stream->chain->prio;
1958 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1959 vdev->vfl_dir = VFL_DIR_TX;
1960 else
1961 vdev->vfl_dir = VFL_DIR_RX;
1962
1963 switch (type) {
1964 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1965 default:
1966 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1967 break;
1968 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1969 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
1970 break;
1971 case V4L2_BUF_TYPE_META_CAPTURE:
1972 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
1973 break;
1974 }
1975
1976 strscpy(vdev->name, dev->name, sizeof(vdev->name));
1977
1978 /*
1979 * Set the driver data before calling video_register_device, otherwise
1980 * the file open() handler might race us.
1981 */
1982 video_set_drvdata(vdev, stream);
1983
1984 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1985 if (ret < 0) {
1986 dev_err(&stream->intf->dev,
1987 "Failed to register %s device (%d).\n",
1988 v4l2_type_names[type], ret);
1989 return ret;
1990 }
1991
1992 kref_get(&dev->ref);
1993 return 0;
1994 }
1995
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)1996 static int uvc_register_video(struct uvc_device *dev,
1997 struct uvc_streaming *stream)
1998 {
1999 int ret;
2000
2001 /* Initialize the streaming interface with default parameters. */
2002 ret = uvc_video_init(stream);
2003 if (ret < 0) {
2004 dev_err(&stream->intf->dev,
2005 "Failed to initialize the device (%d).\n", ret);
2006 return ret;
2007 }
2008
2009 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2010 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2011 | V4L2_CAP_META_CAPTURE;
2012 else
2013 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2014
2015 uvc_debugfs_init_stream(stream);
2016
2017 /* Register the device with V4L. */
2018 return uvc_register_video_device(dev, stream, &stream->vdev,
2019 &stream->queue, stream->type,
2020 &uvc_fops, &uvc_ioctl_ops);
2021 }
2022
2023 /*
2024 * Register all video devices in all chains.
2025 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2026 static int uvc_register_terms(struct uvc_device *dev,
2027 struct uvc_video_chain *chain)
2028 {
2029 struct uvc_streaming *stream;
2030 struct uvc_entity *term;
2031 int ret;
2032
2033 list_for_each_entry(term, &chain->entities, chain) {
2034 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2035 continue;
2036
2037 stream = uvc_stream_by_id(dev, term->id);
2038 if (stream == NULL) {
2039 dev_info(&dev->udev->dev,
2040 "No streaming interface found for terminal %u.",
2041 term->id);
2042 continue;
2043 }
2044
2045 stream->chain = chain;
2046 ret = uvc_register_video(dev, stream);
2047 if (ret < 0)
2048 return ret;
2049
2050 /*
2051 * Register a metadata node, but ignore a possible failure,
2052 * complete registration of video nodes anyway.
2053 */
2054 uvc_meta_register(stream);
2055
2056 term->vdev = &stream->vdev;
2057 }
2058
2059 return 0;
2060 }
2061
uvc_register_chains(struct uvc_device * dev)2062 static int uvc_register_chains(struct uvc_device *dev)
2063 {
2064 struct uvc_video_chain *chain;
2065 int ret;
2066
2067 list_for_each_entry(chain, &dev->chains, list) {
2068 ret = uvc_register_terms(dev, chain);
2069 if (ret < 0)
2070 return ret;
2071
2072 #ifdef CONFIG_MEDIA_CONTROLLER
2073 ret = uvc_mc_register_entities(chain);
2074 if (ret < 0)
2075 dev_info(&dev->udev->dev,
2076 "Failed to register entities (%d).\n", ret);
2077 #endif
2078 }
2079
2080 return 0;
2081 }
2082
2083 /* ------------------------------------------------------------------------
2084 * USB probe, disconnect, suspend and resume
2085 */
2086
2087 static const struct uvc_device_info uvc_quirk_none = { 0 };
2088
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2089 static int uvc_probe(struct usb_interface *intf,
2090 const struct usb_device_id *id)
2091 {
2092 struct usb_device *udev = interface_to_usbdev(intf);
2093 struct uvc_device *dev;
2094 const struct uvc_device_info *info =
2095 (const struct uvc_device_info *)id->driver_info;
2096 int function;
2097 int ret;
2098
2099 /* Allocate memory for the device and initialize it. */
2100 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2101 if (dev == NULL)
2102 return -ENOMEM;
2103
2104 INIT_LIST_HEAD(&dev->entities);
2105 INIT_LIST_HEAD(&dev->chains);
2106 INIT_LIST_HEAD(&dev->streams);
2107 kref_init(&dev->ref);
2108 atomic_set(&dev->nmappings, 0);
2109 mutex_init(&dev->lock);
2110
2111 dev->udev = usb_get_dev(udev);
2112 dev->intf = usb_get_intf(intf);
2113 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2114 dev->info = info ? info : &uvc_quirk_none;
2115 dev->quirks = uvc_quirks_param == -1
2116 ? dev->info->quirks : uvc_quirks_param;
2117
2118 if (id->idVendor && id->idProduct)
2119 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
2120 udev->devpath, id->idVendor, id->idProduct);
2121 else
2122 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
2123 udev->devpath);
2124
2125 if (udev->product != NULL)
2126 strscpy(dev->name, udev->product, sizeof(dev->name));
2127 else
2128 snprintf(dev->name, sizeof(dev->name),
2129 "UVC Camera (%04x:%04x)",
2130 le16_to_cpu(udev->descriptor.idVendor),
2131 le16_to_cpu(udev->descriptor.idProduct));
2132
2133 /*
2134 * Add iFunction or iInterface to names when available as additional
2135 * distinguishers between interfaces. iFunction is prioritized over
2136 * iInterface which matches Windows behavior at the point of writing.
2137 */
2138 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2139 function = intf->intf_assoc->iFunction;
2140 else
2141 function = intf->cur_altsetting->desc.iInterface;
2142 if (function != 0) {
2143 size_t len;
2144
2145 strlcat(dev->name, ": ", sizeof(dev->name));
2146 len = strlen(dev->name);
2147 usb_string(udev, function, dev->name + len,
2148 sizeof(dev->name) - len);
2149 }
2150
2151 /* Initialize the media device. */
2152 #ifdef CONFIG_MEDIA_CONTROLLER
2153 dev->mdev.dev = &intf->dev;
2154 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2155 if (udev->serial)
2156 strscpy(dev->mdev.serial, udev->serial,
2157 sizeof(dev->mdev.serial));
2158 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2159 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2160 media_device_init(&dev->mdev);
2161
2162 dev->vdev.mdev = &dev->mdev;
2163 #endif
2164
2165 /* Parse the Video Class control descriptor. */
2166 if (uvc_parse_control(dev) < 0) {
2167 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
2168 goto error;
2169 }
2170
2171 /* Parse the associated GPIOs. */
2172 if (uvc_gpio_parse(dev) < 0) {
2173 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
2174 goto error;
2175 }
2176
2177 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2178 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2179 udev->product ? udev->product : "<unnamed>",
2180 le16_to_cpu(udev->descriptor.idVendor),
2181 le16_to_cpu(udev->descriptor.idProduct));
2182
2183 if (dev->quirks != dev->info->quirks) {
2184 dev_info(&dev->udev->dev,
2185 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
2186 dev->quirks);
2187 dev_info(&dev->udev->dev,
2188 "Please report required quirks to the linux-media mailing list.\n");
2189 }
2190
2191 if (dev->info->uvc_version) {
2192 dev->uvc_version = dev->info->uvc_version;
2193 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n",
2194 dev->uvc_version >> 8, dev->uvc_version & 0xff);
2195 }
2196
2197 /* Register the V4L2 device. */
2198 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2199 goto error;
2200
2201 /* Scan the device for video chains. */
2202 if (uvc_scan_device(dev) < 0)
2203 goto error;
2204
2205 /* Initialize controls. */
2206 if (uvc_ctrl_init_device(dev) < 0)
2207 goto error;
2208
2209 /* Register video device nodes. */
2210 if (uvc_register_chains(dev) < 0)
2211 goto error;
2212
2213 #ifdef CONFIG_MEDIA_CONTROLLER
2214 /* Register the media device node */
2215 if (media_device_register(&dev->mdev) < 0)
2216 goto error;
2217 #endif
2218 /* Save our data pointer in the interface data. */
2219 usb_set_intfdata(intf, dev);
2220
2221 /* Initialize the interrupt URB. */
2222 ret = uvc_status_init(dev);
2223 if (ret < 0) {
2224 dev_info(&dev->udev->dev,
2225 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
2226 ret);
2227 }
2228
2229 ret = uvc_gpio_init_irq(dev);
2230 if (ret < 0) {
2231 dev_err(&dev->udev->dev,
2232 "Unable to request privacy GPIO IRQ (%d)\n", ret);
2233 goto error;
2234 }
2235
2236 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME)
2237 udev->quirks &= ~USB_QUIRK_RESET_RESUME;
2238
2239 uvc_dbg(dev, PROBE, "UVC device initialized\n");
2240 usb_enable_autosuspend(udev);
2241 return 0;
2242
2243 error:
2244 uvc_unregister_video(dev);
2245 kref_put(&dev->ref, uvc_delete);
2246 return -ENODEV;
2247 }
2248
uvc_disconnect(struct usb_interface * intf)2249 static void uvc_disconnect(struct usb_interface *intf)
2250 {
2251 struct uvc_device *dev = usb_get_intfdata(intf);
2252
2253 /*
2254 * Set the USB interface data to NULL. This can be done outside the
2255 * lock, as there's no other reader.
2256 */
2257 usb_set_intfdata(intf, NULL);
2258
2259 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2260 UVC_SC_VIDEOSTREAMING)
2261 return;
2262
2263 uvc_unregister_video(dev);
2264 kref_put(&dev->ref, uvc_delete);
2265 }
2266
uvc_suspend(struct usb_interface * intf,pm_message_t message)2267 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2268 {
2269 struct uvc_device *dev = usb_get_intfdata(intf);
2270 struct uvc_streaming *stream;
2271
2272 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
2273 intf->cur_altsetting->desc.bInterfaceNumber);
2274
2275 /* Controls are cached on the fly so they don't need to be saved. */
2276 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2277 UVC_SC_VIDEOCONTROL) {
2278 mutex_lock(&dev->lock);
2279 if (dev->users)
2280 uvc_status_stop(dev);
2281 mutex_unlock(&dev->lock);
2282 return 0;
2283 }
2284
2285 list_for_each_entry(stream, &dev->streams, list) {
2286 if (stream->intf == intf)
2287 return uvc_video_suspend(stream);
2288 }
2289
2290 uvc_dbg(dev, SUSPEND,
2291 "Suspend: video streaming USB interface mismatch\n");
2292 return -EINVAL;
2293 }
2294
__uvc_resume(struct usb_interface * intf,int reset)2295 static int __uvc_resume(struct usb_interface *intf, int reset)
2296 {
2297 struct uvc_device *dev = usb_get_intfdata(intf);
2298 struct uvc_streaming *stream;
2299 int ret = 0;
2300
2301 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
2302 intf->cur_altsetting->desc.bInterfaceNumber);
2303
2304 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2305 UVC_SC_VIDEOCONTROL) {
2306 if (reset) {
2307 ret = uvc_ctrl_restore_values(dev);
2308 if (ret < 0)
2309 return ret;
2310 }
2311
2312 mutex_lock(&dev->lock);
2313 if (dev->users)
2314 ret = uvc_status_start(dev, GFP_NOIO);
2315 mutex_unlock(&dev->lock);
2316
2317 return ret;
2318 }
2319
2320 list_for_each_entry(stream, &dev->streams, list) {
2321 if (stream->intf == intf) {
2322 ret = uvc_video_resume(stream, reset);
2323 if (ret < 0)
2324 uvc_queue_streamoff(&stream->queue,
2325 stream->queue.queue.type);
2326 return ret;
2327 }
2328 }
2329
2330 uvc_dbg(dev, SUSPEND,
2331 "Resume: video streaming USB interface mismatch\n");
2332 return -EINVAL;
2333 }
2334
uvc_resume(struct usb_interface * intf)2335 static int uvc_resume(struct usb_interface *intf)
2336 {
2337 return __uvc_resume(intf, 0);
2338 }
2339
uvc_reset_resume(struct usb_interface * intf)2340 static int uvc_reset_resume(struct usb_interface *intf)
2341 {
2342 return __uvc_resume(intf, 1);
2343 }
2344
2345 /* ------------------------------------------------------------------------
2346 * Module parameters
2347 */
2348
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2349 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2350 {
2351 if (uvc_clock_param == CLOCK_MONOTONIC)
2352 return sprintf(buffer, "CLOCK_MONOTONIC");
2353 else
2354 return sprintf(buffer, "CLOCK_REALTIME");
2355 }
2356
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2357 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2358 {
2359 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2360 val += strlen("clock_");
2361
2362 if (strcasecmp(val, "monotonic") == 0)
2363 uvc_clock_param = CLOCK_MONOTONIC;
2364 else if (strcasecmp(val, "realtime") == 0)
2365 uvc_clock_param = CLOCK_REALTIME;
2366 else
2367 return -EINVAL;
2368
2369 return 0;
2370 }
2371
2372 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2373 &uvc_clock_param, 0644);
2374 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2375 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644);
2376 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2377 module_param_named(nodrop, uvc_no_drop_param, uint, 0644);
2378 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2379 module_param_named(quirks, uvc_quirks_param, uint, 0644);
2380 MODULE_PARM_DESC(quirks, "Forced device quirks");
2381 module_param_named(trace, uvc_dbg_param, uint, 0644);
2382 MODULE_PARM_DESC(trace, "Trace level bitmask");
2383 module_param_named(timeout, uvc_timeout_param, uint, 0644);
2384 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2385
2386 /* ------------------------------------------------------------------------
2387 * Driver initialization and cleanup
2388 */
2389
2390 static const struct uvc_device_info uvc_ctrl_power_line_limited = {
2391 .mappings = (const struct uvc_control_mapping *[]) {
2392 &uvc_ctrl_power_line_mapping_limited,
2393 NULL, /* Sentinel */
2394 },
2395 };
2396
2397 static const struct uvc_device_info uvc_ctrl_power_line_uvc11 = {
2398 .mappings = (const struct uvc_control_mapping *[]) {
2399 &uvc_ctrl_power_line_mapping_uvc11,
2400 NULL, /* Sentinel */
2401 },
2402 };
2403
2404 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2405 .quirks = UVC_QUIRK_PROBE_MINMAX,
2406 };
2407
2408 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2409 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2410 };
2411
2412 static const struct uvc_device_info uvc_quirk_probe_def = {
2413 .quirks = UVC_QUIRK_PROBE_DEF,
2414 };
2415
2416 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2417 .quirks = UVC_QUIRK_STREAM_NO_FID,
2418 };
2419
2420 static const struct uvc_device_info uvc_quirk_force_y8 = {
2421 .quirks = UVC_QUIRK_FORCE_Y8,
2422 };
2423
2424 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2425 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2426 {.meta_format = m}
2427
2428 /*
2429 * The Logitech cameras listed below have their interface class set to
2430 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2431 * though they are compliant.
2432 */
2433 static const struct usb_device_id uvc_ids[] = {
2434 /* Quanta USB2.0 HD UVC Webcam */
2435 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2436 | USB_DEVICE_ID_MATCH_INT_INFO,
2437 .idVendor = 0x0408,
2438 .idProduct = 0x3090,
2439 .bInterfaceClass = USB_CLASS_VIDEO,
2440 .bInterfaceSubClass = 1,
2441 .bInterfaceProtocol = 0,
2442 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2443 /* Quanta USB2.0 HD UVC Webcam */
2444 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2445 | USB_DEVICE_ID_MATCH_INT_INFO,
2446 .idVendor = 0x0408,
2447 .idProduct = 0x4030,
2448 .bInterfaceClass = USB_CLASS_VIDEO,
2449 .bInterfaceSubClass = 1,
2450 .bInterfaceProtocol = 0,
2451 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2452 /* Quanta USB2.0 HD UVC Webcam */
2453 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2454 | USB_DEVICE_ID_MATCH_INT_INFO,
2455 .idVendor = 0x0408,
2456 .idProduct = 0x4034,
2457 .bInterfaceClass = USB_CLASS_VIDEO,
2458 .bInterfaceSubClass = 1,
2459 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2460 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2461 /* LogiLink Wireless Webcam */
2462 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2463 | USB_DEVICE_ID_MATCH_INT_INFO,
2464 .idVendor = 0x0416,
2465 .idProduct = 0xa91a,
2466 .bInterfaceClass = USB_CLASS_VIDEO,
2467 .bInterfaceSubClass = 1,
2468 .bInterfaceProtocol = 0,
2469 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2470 /* Genius eFace 2025 */
2471 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2472 | USB_DEVICE_ID_MATCH_INT_INFO,
2473 .idVendor = 0x0458,
2474 .idProduct = 0x706e,
2475 .bInterfaceClass = USB_CLASS_VIDEO,
2476 .bInterfaceSubClass = 1,
2477 .bInterfaceProtocol = 0,
2478 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2479 /* Microsoft Lifecam NX-6000 */
2480 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2481 | USB_DEVICE_ID_MATCH_INT_INFO,
2482 .idVendor = 0x045e,
2483 .idProduct = 0x00f8,
2484 .bInterfaceClass = USB_CLASS_VIDEO,
2485 .bInterfaceSubClass = 1,
2486 .bInterfaceProtocol = 0,
2487 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2488 /* Microsoft Lifecam NX-3000 */
2489 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2490 | USB_DEVICE_ID_MATCH_INT_INFO,
2491 .idVendor = 0x045e,
2492 .idProduct = 0x0721,
2493 .bInterfaceClass = USB_CLASS_VIDEO,
2494 .bInterfaceSubClass = 1,
2495 .bInterfaceProtocol = 0,
2496 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2497 /* Microsoft Lifecam VX-7000 */
2498 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2499 | USB_DEVICE_ID_MATCH_INT_INFO,
2500 .idVendor = 0x045e,
2501 .idProduct = 0x0723,
2502 .bInterfaceClass = USB_CLASS_VIDEO,
2503 .bInterfaceSubClass = 1,
2504 .bInterfaceProtocol = 0,
2505 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2506 /* Logitech, Webcam C910 */
2507 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2508 | USB_DEVICE_ID_MATCH_INT_INFO,
2509 .idVendor = 0x046d,
2510 .idProduct = 0x0821,
2511 .bInterfaceClass = USB_CLASS_VIDEO,
2512 .bInterfaceSubClass = 1,
2513 .bInterfaceProtocol = 0,
2514 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2515 /* Logitech, Webcam B910 */
2516 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2517 | USB_DEVICE_ID_MATCH_INT_INFO,
2518 .idVendor = 0x046d,
2519 .idProduct = 0x0823,
2520 .bInterfaceClass = USB_CLASS_VIDEO,
2521 .bInterfaceSubClass = 1,
2522 .bInterfaceProtocol = 0,
2523 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2524 /* Logitech Quickcam Fusion */
2525 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2526 | USB_DEVICE_ID_MATCH_INT_INFO,
2527 .idVendor = 0x046d,
2528 .idProduct = 0x08c1,
2529 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2530 .bInterfaceSubClass = 1,
2531 .bInterfaceProtocol = 0 },
2532 /* Logitech Quickcam Orbit MP */
2533 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2534 | USB_DEVICE_ID_MATCH_INT_INFO,
2535 .idVendor = 0x046d,
2536 .idProduct = 0x08c2,
2537 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2538 .bInterfaceSubClass = 1,
2539 .bInterfaceProtocol = 0 },
2540 /* Logitech Quickcam Pro for Notebook */
2541 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2542 | USB_DEVICE_ID_MATCH_INT_INFO,
2543 .idVendor = 0x046d,
2544 .idProduct = 0x08c3,
2545 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2546 .bInterfaceSubClass = 1,
2547 .bInterfaceProtocol = 0 },
2548 /* Logitech Quickcam Pro 5000 */
2549 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2550 | USB_DEVICE_ID_MATCH_INT_INFO,
2551 .idVendor = 0x046d,
2552 .idProduct = 0x08c5,
2553 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2554 .bInterfaceSubClass = 1,
2555 .bInterfaceProtocol = 0 },
2556 /* Logitech Quickcam OEM Dell Notebook */
2557 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2558 | USB_DEVICE_ID_MATCH_INT_INFO,
2559 .idVendor = 0x046d,
2560 .idProduct = 0x08c6,
2561 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2562 .bInterfaceSubClass = 1,
2563 .bInterfaceProtocol = 0 },
2564 /* Logitech Quickcam OEM Cisco VT Camera II */
2565 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2566 | USB_DEVICE_ID_MATCH_INT_INFO,
2567 .idVendor = 0x046d,
2568 .idProduct = 0x08c7,
2569 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2570 .bInterfaceSubClass = 1,
2571 .bInterfaceProtocol = 0 },
2572 /* Logitech HD Pro Webcam C920 */
2573 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2574 | USB_DEVICE_ID_MATCH_INT_INFO,
2575 .idVendor = 0x046d,
2576 .idProduct = 0x082d,
2577 .bInterfaceClass = USB_CLASS_VIDEO,
2578 .bInterfaceSubClass = 1,
2579 .bInterfaceProtocol = 0,
2580 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
2581 /* Logitech Rally Bar Huddle */
2582 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2583 | USB_DEVICE_ID_MATCH_INT_INFO,
2584 .idVendor = 0x046d,
2585 .idProduct = 0x087c,
2586 .bInterfaceClass = USB_CLASS_VIDEO,
2587 .bInterfaceSubClass = 1,
2588 .bInterfaceProtocol = 0,
2589 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2590 /* Logitech Rally Bar */
2591 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2592 | USB_DEVICE_ID_MATCH_INT_INFO,
2593 .idVendor = 0x046d,
2594 .idProduct = 0x089b,
2595 .bInterfaceClass = USB_CLASS_VIDEO,
2596 .bInterfaceSubClass = 1,
2597 .bInterfaceProtocol = 0,
2598 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2599 /* Logitech Rally Bar Mini */
2600 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2601 | USB_DEVICE_ID_MATCH_INT_INFO,
2602 .idVendor = 0x046d,
2603 .idProduct = 0x08d3,
2604 .bInterfaceClass = USB_CLASS_VIDEO,
2605 .bInterfaceSubClass = 1,
2606 .bInterfaceProtocol = 0,
2607 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2608 /* Chicony CNF7129 (Asus EEE 100HE) */
2609 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2610 | USB_DEVICE_ID_MATCH_INT_INFO,
2611 .idVendor = 0x04f2,
2612 .idProduct = 0xb071,
2613 .bInterfaceClass = USB_CLASS_VIDEO,
2614 .bInterfaceSubClass = 1,
2615 .bInterfaceProtocol = 0,
2616 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2617 /* Chicony EasyCamera */
2618 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2619 | USB_DEVICE_ID_MATCH_INT_INFO,
2620 .idVendor = 0x04f2,
2621 .idProduct = 0xb5eb,
2622 .bInterfaceClass = USB_CLASS_VIDEO,
2623 .bInterfaceSubClass = 1,
2624 .bInterfaceProtocol = 0,
2625 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2626 /* Chicony Electronics Co., Ltd Integrated Camera */
2627 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2628 | USB_DEVICE_ID_MATCH_INT_INFO,
2629 .idVendor = 0x04f2,
2630 .idProduct = 0xb67c,
2631 .bInterfaceClass = USB_CLASS_VIDEO,
2632 .bInterfaceSubClass = 1,
2633 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2634 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 },
2635 /* Chicony EasyCamera */
2636 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2637 | USB_DEVICE_ID_MATCH_INT_INFO,
2638 .idVendor = 0x04f2,
2639 .idProduct = 0xb6ba,
2640 .bInterfaceClass = USB_CLASS_VIDEO,
2641 .bInterfaceSubClass = 1,
2642 .bInterfaceProtocol = 0,
2643 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2644 /* Chicony EasyCamera */
2645 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2646 | USB_DEVICE_ID_MATCH_INT_INFO,
2647 .idVendor = 0x04f2,
2648 .idProduct = 0xb746,
2649 .bInterfaceClass = USB_CLASS_VIDEO,
2650 .bInterfaceSubClass = 1,
2651 .bInterfaceProtocol = 0,
2652 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2653 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2654 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2655 | USB_DEVICE_ID_MATCH_INT_INFO,
2656 .idVendor = 0x058f,
2657 .idProduct = 0x3820,
2658 .bInterfaceClass = USB_CLASS_VIDEO,
2659 .bInterfaceSubClass = 1,
2660 .bInterfaceProtocol = 0,
2661 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2662 /* Dell XPS m1530 */
2663 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2664 | USB_DEVICE_ID_MATCH_INT_INFO,
2665 .idVendor = 0x05a9,
2666 .idProduct = 0x2640,
2667 .bInterfaceClass = USB_CLASS_VIDEO,
2668 .bInterfaceSubClass = 1,
2669 .bInterfaceProtocol = 0,
2670 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2671 /* Dell SP2008WFP Monitor */
2672 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2673 | USB_DEVICE_ID_MATCH_INT_INFO,
2674 .idVendor = 0x05a9,
2675 .idProduct = 0x2641,
2676 .bInterfaceClass = USB_CLASS_VIDEO,
2677 .bInterfaceSubClass = 1,
2678 .bInterfaceProtocol = 0,
2679 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2680 /* Dell Alienware X51 */
2681 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2682 | USB_DEVICE_ID_MATCH_INT_INFO,
2683 .idVendor = 0x05a9,
2684 .idProduct = 0x2643,
2685 .bInterfaceClass = USB_CLASS_VIDEO,
2686 .bInterfaceSubClass = 1,
2687 .bInterfaceProtocol = 0,
2688 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2689 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2690 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2691 | USB_DEVICE_ID_MATCH_INT_INFO,
2692 .idVendor = 0x05a9,
2693 .idProduct = 0x264a,
2694 .bInterfaceClass = USB_CLASS_VIDEO,
2695 .bInterfaceSubClass = 1,
2696 .bInterfaceProtocol = 0,
2697 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2698 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2699 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2700 | USB_DEVICE_ID_MATCH_INT_INFO,
2701 .idVendor = 0x05a9,
2702 .idProduct = 0x7670,
2703 .bInterfaceClass = USB_CLASS_VIDEO,
2704 .bInterfaceSubClass = 1,
2705 .bInterfaceProtocol = 0,
2706 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2707 /* Apple Built-In iSight */
2708 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2709 | USB_DEVICE_ID_MATCH_INT_INFO,
2710 .idVendor = 0x05ac,
2711 .idProduct = 0x8501,
2712 .bInterfaceClass = USB_CLASS_VIDEO,
2713 .bInterfaceSubClass = 1,
2714 .bInterfaceProtocol = 0,
2715 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2716 | UVC_QUIRK_BUILTIN_ISIGHT) },
2717 /* Apple FaceTime HD Camera (Built-In) */
2718 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2719 | USB_DEVICE_ID_MATCH_INT_INFO,
2720 .idVendor = 0x05ac,
2721 .idProduct = 0x8514,
2722 .bInterfaceClass = USB_CLASS_VIDEO,
2723 .bInterfaceSubClass = 1,
2724 .bInterfaceProtocol = 0,
2725 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2726 /* Apple Built-In iSight via iBridge */
2727 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2728 | USB_DEVICE_ID_MATCH_INT_INFO,
2729 .idVendor = 0x05ac,
2730 .idProduct = 0x8600,
2731 .bInterfaceClass = USB_CLASS_VIDEO,
2732 .bInterfaceSubClass = 1,
2733 .bInterfaceProtocol = 0,
2734 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2735 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2736 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2737 | USB_DEVICE_ID_MATCH_INT_INFO,
2738 .idVendor = 0x05c8,
2739 .idProduct = 0x0403,
2740 .bInterfaceClass = USB_CLASS_VIDEO,
2741 .bInterfaceSubClass = 1,
2742 .bInterfaceProtocol = 0,
2743 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2744 /* Genesys Logic USB 2.0 PC Camera */
2745 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2746 | USB_DEVICE_ID_MATCH_INT_INFO,
2747 .idVendor = 0x05e3,
2748 .idProduct = 0x0505,
2749 .bInterfaceClass = USB_CLASS_VIDEO,
2750 .bInterfaceSubClass = 1,
2751 .bInterfaceProtocol = 0,
2752 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2753 /* Hercules Classic Silver */
2754 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2755 | USB_DEVICE_ID_MATCH_INT_INFO,
2756 .idVendor = 0x06f8,
2757 .idProduct = 0x300c,
2758 .bInterfaceClass = USB_CLASS_VIDEO,
2759 .bInterfaceSubClass = 1,
2760 .bInterfaceProtocol = 0,
2761 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2762 /* ViMicro Vega */
2763 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2764 | USB_DEVICE_ID_MATCH_INT_INFO,
2765 .idVendor = 0x0ac8,
2766 .idProduct = 0x332d,
2767 .bInterfaceClass = USB_CLASS_VIDEO,
2768 .bInterfaceSubClass = 1,
2769 .bInterfaceProtocol = 0,
2770 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2771 /* ViMicro - Minoru3D */
2772 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2773 | USB_DEVICE_ID_MATCH_INT_INFO,
2774 .idVendor = 0x0ac8,
2775 .idProduct = 0x3410,
2776 .bInterfaceClass = USB_CLASS_VIDEO,
2777 .bInterfaceSubClass = 1,
2778 .bInterfaceProtocol = 0,
2779 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2780 /* ViMicro Venus - Minoru3D */
2781 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2782 | USB_DEVICE_ID_MATCH_INT_INFO,
2783 .idVendor = 0x0ac8,
2784 .idProduct = 0x3420,
2785 .bInterfaceClass = USB_CLASS_VIDEO,
2786 .bInterfaceSubClass = 1,
2787 .bInterfaceProtocol = 0,
2788 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2789 /* Ophir Optronics - SPCAM 620U */
2790 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2791 | USB_DEVICE_ID_MATCH_INT_INFO,
2792 .idVendor = 0x0bd3,
2793 .idProduct = 0x0555,
2794 .bInterfaceClass = USB_CLASS_VIDEO,
2795 .bInterfaceSubClass = 1,
2796 .bInterfaceProtocol = 0,
2797 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2798 /* MT6227 */
2799 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2800 | USB_DEVICE_ID_MATCH_INT_INFO,
2801 .idVendor = 0x0e8d,
2802 .idProduct = 0x0004,
2803 .bInterfaceClass = USB_CLASS_VIDEO,
2804 .bInterfaceSubClass = 1,
2805 .bInterfaceProtocol = 0,
2806 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2807 | UVC_QUIRK_PROBE_DEF) },
2808 /* IMC Networks (Medion Akoya) */
2809 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2810 | USB_DEVICE_ID_MATCH_INT_INFO,
2811 .idVendor = 0x13d3,
2812 .idProduct = 0x5103,
2813 .bInterfaceClass = USB_CLASS_VIDEO,
2814 .bInterfaceSubClass = 1,
2815 .bInterfaceProtocol = 0,
2816 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2817 /* JMicron USB2.0 XGA WebCam */
2818 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2819 | USB_DEVICE_ID_MATCH_INT_INFO,
2820 .idVendor = 0x152d,
2821 .idProduct = 0x0310,
2822 .bInterfaceClass = USB_CLASS_VIDEO,
2823 .bInterfaceSubClass = 1,
2824 .bInterfaceProtocol = 0,
2825 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2826 /* Syntek (HP Spartan) */
2827 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2828 | USB_DEVICE_ID_MATCH_INT_INFO,
2829 .idVendor = 0x174f,
2830 .idProduct = 0x5212,
2831 .bInterfaceClass = USB_CLASS_VIDEO,
2832 .bInterfaceSubClass = 1,
2833 .bInterfaceProtocol = 0,
2834 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2835 /* Syntek (Samsung Q310) */
2836 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2837 | USB_DEVICE_ID_MATCH_INT_INFO,
2838 .idVendor = 0x174f,
2839 .idProduct = 0x5931,
2840 .bInterfaceClass = USB_CLASS_VIDEO,
2841 .bInterfaceSubClass = 1,
2842 .bInterfaceProtocol = 0,
2843 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2844 /* Syntek (Packard Bell EasyNote MX52 */
2845 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2846 | USB_DEVICE_ID_MATCH_INT_INFO,
2847 .idVendor = 0x174f,
2848 .idProduct = 0x8a12,
2849 .bInterfaceClass = USB_CLASS_VIDEO,
2850 .bInterfaceSubClass = 1,
2851 .bInterfaceProtocol = 0,
2852 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2853 /* Syntek (Asus F9SG) */
2854 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2855 | USB_DEVICE_ID_MATCH_INT_INFO,
2856 .idVendor = 0x174f,
2857 .idProduct = 0x8a31,
2858 .bInterfaceClass = USB_CLASS_VIDEO,
2859 .bInterfaceSubClass = 1,
2860 .bInterfaceProtocol = 0,
2861 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2862 /* Syntek (Asus U3S) */
2863 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2864 | USB_DEVICE_ID_MATCH_INT_INFO,
2865 .idVendor = 0x174f,
2866 .idProduct = 0x8a33,
2867 .bInterfaceClass = USB_CLASS_VIDEO,
2868 .bInterfaceSubClass = 1,
2869 .bInterfaceProtocol = 0,
2870 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2871 /* Syntek (JAOtech Smart Terminal) */
2872 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2873 | USB_DEVICE_ID_MATCH_INT_INFO,
2874 .idVendor = 0x174f,
2875 .idProduct = 0x8a34,
2876 .bInterfaceClass = USB_CLASS_VIDEO,
2877 .bInterfaceSubClass = 1,
2878 .bInterfaceProtocol = 0,
2879 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2880 /* Miricle 307K */
2881 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2882 | USB_DEVICE_ID_MATCH_INT_INFO,
2883 .idVendor = 0x17dc,
2884 .idProduct = 0x0202,
2885 .bInterfaceClass = USB_CLASS_VIDEO,
2886 .bInterfaceSubClass = 1,
2887 .bInterfaceProtocol = 0,
2888 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2889 /* Lenovo Thinkpad SL400/SL500 */
2890 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2891 | USB_DEVICE_ID_MATCH_INT_INFO,
2892 .idVendor = 0x17ef,
2893 .idProduct = 0x480b,
2894 .bInterfaceClass = USB_CLASS_VIDEO,
2895 .bInterfaceSubClass = 1,
2896 .bInterfaceProtocol = 0,
2897 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2898 /* Aveo Technology USB 2.0 Camera */
2899 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2900 | USB_DEVICE_ID_MATCH_INT_INFO,
2901 .idVendor = 0x1871,
2902 .idProduct = 0x0306,
2903 .bInterfaceClass = USB_CLASS_VIDEO,
2904 .bInterfaceSubClass = 1,
2905 .bInterfaceProtocol = 0,
2906 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2907 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2908 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2909 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2910 | USB_DEVICE_ID_MATCH_INT_INFO,
2911 .idVendor = 0x1871,
2912 .idProduct = 0x0516,
2913 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2914 .bInterfaceSubClass = 1,
2915 .bInterfaceProtocol = 0 },
2916 /* Ecamm Pico iMage */
2917 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2918 | USB_DEVICE_ID_MATCH_INT_INFO,
2919 .idVendor = 0x18cd,
2920 .idProduct = 0xcafe,
2921 .bInterfaceClass = USB_CLASS_VIDEO,
2922 .bInterfaceSubClass = 1,
2923 .bInterfaceProtocol = 0,
2924 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2925 /* Manta MM-353 Plako */
2926 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2927 | USB_DEVICE_ID_MATCH_INT_INFO,
2928 .idVendor = 0x18ec,
2929 .idProduct = 0x3188,
2930 .bInterfaceClass = USB_CLASS_VIDEO,
2931 .bInterfaceSubClass = 1,
2932 .bInterfaceProtocol = 0,
2933 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2934 /* FSC WebCam V30S */
2935 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2936 | USB_DEVICE_ID_MATCH_INT_INFO,
2937 .idVendor = 0x18ec,
2938 .idProduct = 0x3288,
2939 .bInterfaceClass = USB_CLASS_VIDEO,
2940 .bInterfaceSubClass = 1,
2941 .bInterfaceProtocol = 0,
2942 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2943 /* Arkmicro unbranded */
2944 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2945 | USB_DEVICE_ID_MATCH_INT_INFO,
2946 .idVendor = 0x18ec,
2947 .idProduct = 0x3290,
2948 .bInterfaceClass = USB_CLASS_VIDEO,
2949 .bInterfaceSubClass = 1,
2950 .bInterfaceProtocol = 0,
2951 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2952 /* The Imaging Source USB CCD cameras */
2953 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2954 | USB_DEVICE_ID_MATCH_INT_INFO,
2955 .idVendor = 0x199e,
2956 .idProduct = 0x8102,
2957 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2958 .bInterfaceSubClass = 1,
2959 .bInterfaceProtocol = 0 },
2960 /* Bodelin ProScopeHR */
2961 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2962 | USB_DEVICE_ID_MATCH_DEV_HI
2963 | USB_DEVICE_ID_MATCH_INT_INFO,
2964 .idVendor = 0x19ab,
2965 .idProduct = 0x1000,
2966 .bcdDevice_hi = 0x0126,
2967 .bInterfaceClass = USB_CLASS_VIDEO,
2968 .bInterfaceSubClass = 1,
2969 .bInterfaceProtocol = 0,
2970 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
2971 /* MSI StarCam 370i */
2972 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2973 | USB_DEVICE_ID_MATCH_INT_INFO,
2974 .idVendor = 0x1b3b,
2975 .idProduct = 0x2951,
2976 .bInterfaceClass = USB_CLASS_VIDEO,
2977 .bInterfaceSubClass = 1,
2978 .bInterfaceProtocol = 0,
2979 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2980 /* Generalplus Technology Inc. 808 Camera */
2981 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2982 | USB_DEVICE_ID_MATCH_INT_INFO,
2983 .idVendor = 0x1b3f,
2984 .idProduct = 0x2002,
2985 .bInterfaceClass = USB_CLASS_VIDEO,
2986 .bInterfaceSubClass = 1,
2987 .bInterfaceProtocol = 0,
2988 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2989 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */
2990 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2991 | USB_DEVICE_ID_MATCH_INT_INFO,
2992 .idVendor = 0x1bcf,
2993 .idProduct = 0x0b40,
2994 .bInterfaceClass = USB_CLASS_VIDEO,
2995 .bInterfaceSubClass = 1,
2996 .bInterfaceProtocol = 0,
2997 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2998 .uvc_version = 0x010a,
2999 } },
3000 /* SiGma Micro USB Web Camera */
3001 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3002 | USB_DEVICE_ID_MATCH_INT_INFO,
3003 .idVendor = 0x1c4f,
3004 .idProduct = 0x3000,
3005 .bInterfaceClass = USB_CLASS_VIDEO,
3006 .bInterfaceSubClass = 1,
3007 .bInterfaceProtocol = 0,
3008 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
3009 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
3010 /* Oculus VR Positional Tracker DK2 */
3011 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3012 | USB_DEVICE_ID_MATCH_INT_INFO,
3013 .idVendor = 0x2833,
3014 .idProduct = 0x0201,
3015 .bInterfaceClass = USB_CLASS_VIDEO,
3016 .bInterfaceSubClass = 1,
3017 .bInterfaceProtocol = 0,
3018 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3019 /* Oculus VR Rift Sensor */
3020 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3021 | USB_DEVICE_ID_MATCH_INT_INFO,
3022 .idVendor = 0x2833,
3023 .idProduct = 0x0211,
3024 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3025 .bInterfaceSubClass = 1,
3026 .bInterfaceProtocol = 0,
3027 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3028 /* GEO Semiconductor GC6500 */
3029 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3030 | USB_DEVICE_ID_MATCH_INT_INFO,
3031 .idVendor = 0x29fe,
3032 .idProduct = 0x4d53,
3033 .bInterfaceClass = USB_CLASS_VIDEO,
3034 .bInterfaceSubClass = 1,
3035 .bInterfaceProtocol = 0,
3036 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3037 /* SunplusIT Inc HD Camera */
3038 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3039 | USB_DEVICE_ID_MATCH_INT_INFO,
3040 .idVendor = 0x2b7e,
3041 .idProduct = 0xb752,
3042 .bInterfaceClass = USB_CLASS_VIDEO,
3043 .bInterfaceSubClass = 1,
3044 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
3045 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 },
3046 /* Lenovo Integrated Camera */
3047 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3048 | USB_DEVICE_ID_MATCH_INT_INFO,
3049 .idVendor = 0x30c9,
3050 .idProduct = 0x0093,
3051 .bInterfaceClass = USB_CLASS_VIDEO,
3052 .bInterfaceSubClass = 1,
3053 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
3054 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 },
3055 /* Sonix Technology USB 2.0 Camera */
3056 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3057 | USB_DEVICE_ID_MATCH_INT_INFO,
3058 .idVendor = 0x3277,
3059 .idProduct = 0x0072,
3060 .bInterfaceClass = USB_CLASS_VIDEO,
3061 .bInterfaceSubClass = 1,
3062 .bInterfaceProtocol = 0,
3063 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
3064 /* Acer EasyCamera */
3065 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3066 | USB_DEVICE_ID_MATCH_INT_INFO,
3067 .idVendor = 0x5986,
3068 .idProduct = 0x1172,
3069 .bInterfaceClass = USB_CLASS_VIDEO,
3070 .bInterfaceSubClass = 1,
3071 .bInterfaceProtocol = 0,
3072 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
3073 /* Acer EasyCamera */
3074 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3075 | USB_DEVICE_ID_MATCH_INT_INFO,
3076 .idVendor = 0x5986,
3077 .idProduct = 0x1180,
3078 .bInterfaceClass = USB_CLASS_VIDEO,
3079 .bInterfaceSubClass = 1,
3080 .bInterfaceProtocol = 0,
3081 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
3082 /* Intel D410/ASR depth camera */
3083 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3084 | USB_DEVICE_ID_MATCH_INT_INFO,
3085 .idVendor = 0x8086,
3086 .idProduct = 0x0ad2,
3087 .bInterfaceClass = USB_CLASS_VIDEO,
3088 .bInterfaceSubClass = 1,
3089 .bInterfaceProtocol = 0,
3090 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3091 /* Intel D415/ASRC depth camera */
3092 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3093 | USB_DEVICE_ID_MATCH_INT_INFO,
3094 .idVendor = 0x8086,
3095 .idProduct = 0x0ad3,
3096 .bInterfaceClass = USB_CLASS_VIDEO,
3097 .bInterfaceSubClass = 1,
3098 .bInterfaceProtocol = 0,
3099 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3100 /* Intel D430/AWG depth camera */
3101 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3102 | USB_DEVICE_ID_MATCH_INT_INFO,
3103 .idVendor = 0x8086,
3104 .idProduct = 0x0ad4,
3105 .bInterfaceClass = USB_CLASS_VIDEO,
3106 .bInterfaceSubClass = 1,
3107 .bInterfaceProtocol = 0,
3108 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3109 /* Intel RealSense D4M */
3110 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3111 | USB_DEVICE_ID_MATCH_INT_INFO,
3112 .idVendor = 0x8086,
3113 .idProduct = 0x0b03,
3114 .bInterfaceClass = USB_CLASS_VIDEO,
3115 .bInterfaceSubClass = 1,
3116 .bInterfaceProtocol = 0,
3117 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3118 /* Intel D435/AWGC depth camera */
3119 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3120 | USB_DEVICE_ID_MATCH_INT_INFO,
3121 .idVendor = 0x8086,
3122 .idProduct = 0x0b07,
3123 .bInterfaceClass = USB_CLASS_VIDEO,
3124 .bInterfaceSubClass = 1,
3125 .bInterfaceProtocol = 0,
3126 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3127 /* Intel D435i depth camera */
3128 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3129 | USB_DEVICE_ID_MATCH_INT_INFO,
3130 .idVendor = 0x8086,
3131 .idProduct = 0x0b3a,
3132 .bInterfaceClass = USB_CLASS_VIDEO,
3133 .bInterfaceSubClass = 1,
3134 .bInterfaceProtocol = 0,
3135 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3136 /* Intel D405 Depth Camera */
3137 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3138 | USB_DEVICE_ID_MATCH_INT_INFO,
3139 .idVendor = 0x8086,
3140 .idProduct = 0x0b5b,
3141 .bInterfaceClass = USB_CLASS_VIDEO,
3142 .bInterfaceSubClass = 1,
3143 .bInterfaceProtocol = 0,
3144 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3145 /* Intel D455 Depth Camera */
3146 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3147 | USB_DEVICE_ID_MATCH_INT_INFO,
3148 .idVendor = 0x8086,
3149 .idProduct = 0x0b5c,
3150 .bInterfaceClass = USB_CLASS_VIDEO,
3151 .bInterfaceSubClass = 1,
3152 .bInterfaceProtocol = 0,
3153 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3154 /* Generic USB Video Class */
3155 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3156 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3157 {}
3158 };
3159
3160 MODULE_DEVICE_TABLE(usb, uvc_ids);
3161
3162 struct uvc_driver uvc_driver = {
3163 .driver = {
3164 .name = "uvcvideo",
3165 .probe = uvc_probe,
3166 .disconnect = uvc_disconnect,
3167 .suspend = uvc_suspend,
3168 .resume = uvc_resume,
3169 .reset_resume = uvc_reset_resume,
3170 .id_table = uvc_ids,
3171 .supports_autosuspend = 1,
3172 },
3173 };
3174
uvc_init(void)3175 static int __init uvc_init(void)
3176 {
3177 int ret;
3178
3179 uvc_debugfs_init();
3180
3181 ret = usb_register(&uvc_driver.driver);
3182 if (ret < 0) {
3183 uvc_debugfs_cleanup();
3184 return ret;
3185 }
3186
3187 return 0;
3188 }
3189
uvc_cleanup(void)3190 static void __exit uvc_cleanup(void)
3191 {
3192 usb_deregister(&uvc_driver.driver);
3193 uvc_debugfs_cleanup();
3194 }
3195
3196 module_init(uvc_init);
3197 module_exit(uvc_cleanup);
3198
3199 MODULE_AUTHOR(DRIVER_AUTHOR);
3200 MODULE_DESCRIPTION(DRIVER_DESC);
3201 MODULE_LICENSE("GPL");
3202 MODULE_VERSION(DRIVER_VERSION);
3203
3204