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 <linux/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 = 1;
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 static struct usb_driver uvc_driver;
41
42 /* ------------------------------------------------------------------------
43 * Utility functions
44 */
45
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)46 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
47 u8 epaddr)
48 {
49 struct usb_host_endpoint *ep;
50 unsigned int i;
51
52 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
53 ep = &alts->endpoint[i];
54 if (ep->desc.bEndpointAddress == epaddr)
55 return ep;
56 }
57
58 return NULL;
59 }
60
uvc_colorspace(const u8 primaries)61 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
62 {
63 static const enum v4l2_colorspace colorprimaries[] = {
64 V4L2_COLORSPACE_SRGB, /* Unspecified */
65 V4L2_COLORSPACE_SRGB,
66 V4L2_COLORSPACE_470_SYSTEM_M,
67 V4L2_COLORSPACE_470_SYSTEM_BG,
68 V4L2_COLORSPACE_SMPTE170M,
69 V4L2_COLORSPACE_SMPTE240M,
70 };
71
72 if (primaries < ARRAY_SIZE(colorprimaries))
73 return colorprimaries[primaries];
74
75 return V4L2_COLORSPACE_SRGB; /* Reserved */
76 }
77
uvc_xfer_func(const u8 transfer_characteristics)78 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
79 {
80 /*
81 * V4L2 does not currently have definitions for all possible values of
82 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
83 * values, the mapping below should be updated.
84 *
85 * Substitutions are taken from the mapping given for
86 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
87 */
88 static const enum v4l2_xfer_func xfer_funcs[] = {
89 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
90 V4L2_XFER_FUNC_709,
91 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
92 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
93 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
94 V4L2_XFER_FUNC_SMPTE240M,
95 V4L2_XFER_FUNC_NONE,
96 V4L2_XFER_FUNC_SRGB,
97 };
98
99 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
100 return xfer_funcs[transfer_characteristics];
101
102 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
103 }
104
uvc_ycbcr_enc(const u8 matrix_coefficients)105 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
106 {
107 /*
108 * V4L2 does not currently have definitions for all possible values of
109 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
110 * values, the mapping below should be updated.
111 *
112 * Substitutions are taken from the mapping given for
113 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
114 *
115 * FCC is assumed to be close enough to 601.
116 */
117 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
118 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
119 V4L2_YCBCR_ENC_709,
120 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
121 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
122 V4L2_YCBCR_ENC_601,
123 V4L2_YCBCR_ENC_SMPTE240M,
124 };
125
126 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
127 return ycbcr_encs[matrix_coefficients];
128
129 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
130 }
131
132 /* ------------------------------------------------------------------------
133 * Terminal and unit management
134 */
135
uvc_entity_by_id(struct uvc_device * dev,int id)136 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
137 {
138 struct uvc_entity *entity;
139
140 if (id == UVC_INVALID_ENTITY_ID)
141 return NULL;
142
143 list_for_each_entry(entity, &dev->entities, list) {
144 if (entity->id == id)
145 return entity;
146 }
147
148 return NULL;
149 }
150
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)151 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
152 int id, struct uvc_entity *entity)
153 {
154 unsigned int i;
155
156 if (entity == NULL)
157 entity = list_entry(&dev->entities, struct uvc_entity, list);
158
159 list_for_each_entry_continue(entity, &dev->entities, list) {
160 for (i = 0; i < entity->bNrInPins; ++i)
161 if (entity->baSourceID[i] == id)
162 return entity;
163 }
164
165 return NULL;
166 }
167
uvc_stream_by_id(struct uvc_device * dev,int id)168 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
169 {
170 struct uvc_streaming *stream, *last_stream;
171 unsigned int count = 0;
172
173 list_for_each_entry(stream, &dev->streams, list) {
174 count += 1;
175 last_stream = stream;
176 if (stream->header.bTerminalLink == id)
177 return stream;
178 }
179
180 /*
181 * If the streaming entity is referenced by an invalid ID, notify the
182 * user and use heuristics to guess the correct entity.
183 */
184 if (count == 1 && id == UVC_INVALID_ENTITY_ID) {
185 dev_warn(&dev->intf->dev,
186 "UVC non compliance: Invalid USB header. The streaming entity has an invalid ID, guessing the correct one.");
187 return last_stream;
188 }
189
190 return NULL;
191 }
192
193 /* ------------------------------------------------------------------------
194 * Streaming Object Management
195 */
196
uvc_stream_delete(struct uvc_streaming * stream)197 static void uvc_stream_delete(struct uvc_streaming *stream)
198 {
199 if (stream->async_wq)
200 destroy_workqueue(stream->async_wq);
201
202 usb_put_intf(stream->intf);
203
204 kfree(stream->formats);
205 kfree(stream->header.bmaControls);
206 kfree(stream);
207 }
208
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)209 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
210 struct usb_interface *intf)
211 {
212 struct uvc_streaming *stream;
213
214 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
215 if (stream == NULL)
216 return NULL;
217
218 stream->dev = dev;
219 stream->intf = usb_get_intf(intf);
220 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
221
222 /* Allocate a stream specific work queue for asynchronous tasks. */
223 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
224 0);
225 if (!stream->async_wq) {
226 uvc_stream_delete(stream);
227 return NULL;
228 }
229
230 return stream;
231 }
232
233 /* ------------------------------------------------------------------------
234 * Descriptors parsing
235 */
236
uvc_parse_frame(struct uvc_device * dev,struct uvc_streaming * streaming,struct uvc_format * format,struct uvc_frame * frame,u32 ** intervals,u8 ftype,int width_multiplier,const unsigned char * buffer,int buflen)237 static int uvc_parse_frame(struct uvc_device *dev,
238 struct uvc_streaming *streaming,
239 struct uvc_format *format, struct uvc_frame *frame,
240 u32 **intervals, u8 ftype, int width_multiplier,
241 const unsigned char *buffer, int buflen)
242 {
243 struct usb_host_interface *alts = streaming->intf->cur_altsetting;
244 unsigned int maxIntervalIndex;
245 unsigned int interval;
246 unsigned int i, n;
247
248 if (ftype != UVC_VS_FRAME_FRAME_BASED)
249 n = buflen > 25 ? buffer[25] : 0;
250 else
251 n = buflen > 21 ? buffer[21] : 0;
252
253 n = n ? n : 3;
254
255 if (buflen < 26 + 4 * n) {
256 uvc_dbg(dev, DESCR,
257 "device %d videostreaming interface %d FRAME error\n",
258 dev->udev->devnum, alts->desc.bInterfaceNumber);
259 return -EINVAL;
260 }
261
262 frame->bFrameIndex = buffer[3];
263 frame->bmCapabilities = buffer[4];
264 frame->wWidth = get_unaligned_le16(&buffer[5]) * width_multiplier;
265 frame->wHeight = get_unaligned_le16(&buffer[7]);
266 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
267 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
268 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
269 frame->dwMaxVideoFrameBufferSize =
270 get_unaligned_le32(&buffer[17]);
271 frame->dwDefaultFrameInterval =
272 get_unaligned_le32(&buffer[21]);
273 frame->bFrameIntervalType = buffer[25];
274 } else {
275 frame->dwMaxVideoFrameBufferSize = 0;
276 frame->dwDefaultFrameInterval =
277 get_unaligned_le32(&buffer[17]);
278 frame->bFrameIntervalType = buffer[21];
279 }
280
281 /*
282 * Copy the frame intervals.
283 *
284 * Some bogus devices report dwMinFrameInterval equal to
285 * dwMaxFrameInterval and have dwFrameIntervalStep set to zero. Setting
286 * all null intervals to 1 fixes the problem and some other divisions
287 * by zero that could happen.
288 */
289 frame->dwFrameInterval = *intervals;
290
291 for (i = 0; i < n; ++i) {
292 interval = get_unaligned_le32(&buffer[26 + 4 * i]);
293 (*intervals)[i] = interval ? interval : 1;
294 }
295
296 /*
297 * Apply more fixes, quirks and workarounds to handle incorrect or
298 * broken descriptors.
299 */
300
301 /*
302 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize completely.
303 * Observed behaviours range from setting the value to 1.1x the actual
304 * frame size to hardwiring the 16 low bits to 0. This results in a
305 * higher than necessary memory usage as well as a wrong image size
306 * information. For uncompressed formats this can be fixed by computing
307 * the value from the frame size.
308 */
309 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
310 frame->dwMaxVideoFrameBufferSize = format->bpp * frame->wWidth
311 * frame->wHeight / 8;
312
313 /*
314 * Clamp the default frame interval to the boundaries. A zero
315 * bFrameIntervalType value indicates a continuous frame interval
316 * range, with dwFrameInterval[0] storing the minimum value and
317 * dwFrameInterval[1] storing the maximum value.
318 */
319 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1;
320 frame->dwDefaultFrameInterval =
321 clamp(frame->dwDefaultFrameInterval,
322 frame->dwFrameInterval[0],
323 frame->dwFrameInterval[maxIntervalIndex]);
324
325 /*
326 * Some devices report frame intervals that are not functional. If the
327 * corresponding quirk is set, restrict operation to the first interval
328 * only.
329 */
330 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
331 frame->bFrameIntervalType = 1;
332 (*intervals)[0] = frame->dwDefaultFrameInterval;
333 }
334
335 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
336 frame->wWidth, frame->wHeight,
337 10000000 / frame->dwDefaultFrameInterval,
338 (100000000 / frame->dwDefaultFrameInterval) % 10);
339
340 *intervals += n;
341
342 return buffer[0];
343 }
344
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)345 static int uvc_parse_format(struct uvc_device *dev,
346 struct uvc_streaming *streaming, struct uvc_format *format,
347 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer,
348 int buflen)
349 {
350 struct usb_host_interface *alts = streaming->intf->cur_altsetting;
351 const struct uvc_format_desc *fmtdesc;
352 struct uvc_frame *frame;
353 const unsigned char *start = buffer;
354 unsigned int width_multiplier = 1;
355 unsigned int i, n;
356 u8 ftype;
357 int ret;
358
359 if (buflen < 4)
360 return -EINVAL;
361
362 format->type = buffer[2];
363 format->index = buffer[3];
364 format->frames = frames;
365
366 switch (buffer[2]) {
367 case UVC_VS_FORMAT_UNCOMPRESSED:
368 case UVC_VS_FORMAT_FRAME_BASED:
369 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
370 if (buflen < n) {
371 uvc_dbg(dev, DESCR,
372 "device %d videostreaming interface %d FORMAT error\n",
373 dev->udev->devnum,
374 alts->desc.bInterfaceNumber);
375 return -EINVAL;
376 }
377
378 /* Find the format descriptor from its GUID. */
379 fmtdesc = uvc_format_by_guid(&buffer[5]);
380
381 if (!fmtdesc) {
382 /*
383 * Unknown video formats are not fatal errors, the
384 * caller will skip this descriptor.
385 */
386 dev_info(&streaming->intf->dev,
387 "Unknown video format %pUl\n", &buffer[5]);
388 return 0;
389 }
390
391 format->fcc = fmtdesc->fcc;
392 format->bpp = buffer[21];
393
394 /*
395 * Some devices report a format that doesn't match what they
396 * really send.
397 */
398 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
399 if (format->fcc == V4L2_PIX_FMT_YUYV) {
400 format->fcc = V4L2_PIX_FMT_GREY;
401 format->bpp = 8;
402 width_multiplier = 2;
403 }
404 }
405
406 /* Some devices report bpp that doesn't match the format. */
407 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
408 const struct v4l2_format_info *info =
409 v4l2_format_info(format->fcc);
410
411 if (info) {
412 unsigned int div = info->hdiv * info->vdiv;
413
414 n = info->bpp[0] * div;
415 for (i = 1; i < info->comp_planes; i++)
416 n += info->bpp[i];
417
418 format->bpp = DIV_ROUND_UP(8 * n, div);
419 }
420 }
421
422 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
423 ftype = UVC_VS_FRAME_UNCOMPRESSED;
424 } else {
425 ftype = UVC_VS_FRAME_FRAME_BASED;
426 if (buffer[27])
427 format->flags = UVC_FMT_FLAG_COMPRESSED;
428 }
429 break;
430
431 case UVC_VS_FORMAT_MJPEG:
432 if (buflen < 11) {
433 uvc_dbg(dev, DESCR,
434 "device %d videostreaming interface %d FORMAT error\n",
435 dev->udev->devnum,
436 alts->desc.bInterfaceNumber);
437 return -EINVAL;
438 }
439
440 format->fcc = V4L2_PIX_FMT_MJPEG;
441 format->flags = UVC_FMT_FLAG_COMPRESSED;
442 format->bpp = 0;
443 ftype = UVC_VS_FRAME_MJPEG;
444 break;
445
446 case UVC_VS_FORMAT_DV:
447 if (buflen < 9) {
448 uvc_dbg(dev, DESCR,
449 "device %d videostreaming interface %d FORMAT error\n",
450 dev->udev->devnum,
451 alts->desc.bInterfaceNumber);
452 return -EINVAL;
453 }
454
455 if ((buffer[8] & 0x7f) > 2) {
456 uvc_dbg(dev, DESCR,
457 "device %d videostreaming interface %d: unknown DV format %u\n",
458 dev->udev->devnum,
459 alts->desc.bInterfaceNumber, buffer[8]);
460 return -EINVAL;
461 }
462
463 format->fcc = V4L2_PIX_FMT_DV;
464 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
465 format->bpp = 0;
466 ftype = 0;
467
468 /* Create a dummy frame descriptor. */
469 frame = &frames[0];
470 memset(frame, 0, sizeof(*frame));
471 frame->bFrameIntervalType = 1;
472 frame->dwDefaultFrameInterval = 1;
473 frame->dwFrameInterval = *intervals;
474 *(*intervals)++ = 1;
475 format->nframes = 1;
476 break;
477
478 case UVC_VS_FORMAT_MPEG2TS:
479 case UVC_VS_FORMAT_STREAM_BASED:
480 /* Not supported yet. */
481 default:
482 uvc_dbg(dev, DESCR,
483 "device %d videostreaming interface %d unsupported format %u\n",
484 dev->udev->devnum, alts->desc.bInterfaceNumber,
485 buffer[2]);
486 return -EINVAL;
487 }
488
489 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc);
490
491 buflen -= buffer[0];
492 buffer += buffer[0];
493
494 /*
495 * Parse the frame descriptors. Only uncompressed, MJPEG and frame
496 * based formats have frame descriptors.
497 */
498 if (ftype) {
499 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
500 buffer[2] == ftype) {
501 frame = &frames[format->nframes];
502 ret = uvc_parse_frame(dev, streaming, format, frame,
503 intervals, ftype, width_multiplier,
504 buffer, buflen);
505 if (ret < 0)
506 return ret;
507 format->nframes++;
508 buflen -= ret;
509 buffer += ret;
510 }
511 }
512
513 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
514 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
515 buflen -= buffer[0];
516 buffer += buffer[0];
517 }
518
519 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
520 buffer[2] == UVC_VS_COLORFORMAT) {
521 if (buflen < 6) {
522 uvc_dbg(dev, DESCR,
523 "device %d videostreaming interface %d COLORFORMAT error\n",
524 dev->udev->devnum,
525 alts->desc.bInterfaceNumber);
526 return -EINVAL;
527 }
528
529 format->colorspace = uvc_colorspace(buffer[3]);
530 format->xfer_func = uvc_xfer_func(buffer[4]);
531 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
532
533 buflen -= buffer[0];
534 buffer += buffer[0];
535 } else {
536 format->colorspace = V4L2_COLORSPACE_SRGB;
537 }
538
539 return buffer - start;
540 }
541
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)542 static int uvc_parse_streaming(struct uvc_device *dev,
543 struct usb_interface *intf)
544 {
545 struct uvc_streaming *streaming = NULL;
546 struct uvc_format *format;
547 struct uvc_frame *frame;
548 struct usb_host_interface *alts = &intf->altsetting[0];
549 const unsigned char *_buffer, *buffer = alts->extra;
550 int _buflen, buflen = alts->extralen;
551 unsigned int nformats = 0, nframes = 0, nintervals = 0;
552 unsigned int size, i, n, p;
553 u32 *interval;
554 u32 psize;
555 int ret = -EINVAL;
556
557 if (intf->cur_altsetting->desc.bInterfaceSubClass
558 != UVC_SC_VIDEOSTREAMING) {
559 uvc_dbg(dev, DESCR,
560 "device %d interface %d isn't a video streaming interface\n",
561 dev->udev->devnum,
562 intf->altsetting[0].desc.bInterfaceNumber);
563 return -EINVAL;
564 }
565
566 if (usb_driver_claim_interface(&uvc_driver, intf, dev)) {
567 uvc_dbg(dev, DESCR,
568 "device %d interface %d is already claimed\n",
569 dev->udev->devnum,
570 intf->altsetting[0].desc.bInterfaceNumber);
571 return -EINVAL;
572 }
573
574 streaming = uvc_stream_new(dev, intf);
575 if (streaming == NULL) {
576 usb_driver_release_interface(&uvc_driver, intf);
577 return -ENOMEM;
578 }
579
580 /*
581 * The Pico iMage webcam has its class-specific interface descriptors
582 * after the endpoint descriptors.
583 */
584 if (buflen == 0) {
585 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
586 struct usb_host_endpoint *ep = &alts->endpoint[i];
587
588 if (ep->extralen == 0)
589 continue;
590
591 if (ep->extralen > 2 &&
592 ep->extra[1] == USB_DT_CS_INTERFACE) {
593 uvc_dbg(dev, DESCR,
594 "trying extra data from endpoint %u\n",
595 i);
596 buffer = alts->endpoint[i].extra;
597 buflen = alts->endpoint[i].extralen;
598 break;
599 }
600 }
601 }
602
603 /* Skip the standard interface descriptors. */
604 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
605 buflen -= buffer[0];
606 buffer += buffer[0];
607 }
608
609 if (buflen <= 2) {
610 uvc_dbg(dev, DESCR,
611 "no class-specific streaming interface descriptors found\n");
612 goto error;
613 }
614
615 /* Parse the header descriptor. */
616 switch (buffer[2]) {
617 case UVC_VS_OUTPUT_HEADER:
618 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
619 size = 9;
620 break;
621
622 case UVC_VS_INPUT_HEADER:
623 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
624 size = 13;
625 break;
626
627 default:
628 uvc_dbg(dev, DESCR,
629 "device %d videostreaming interface %d HEADER descriptor not found\n",
630 dev->udev->devnum, alts->desc.bInterfaceNumber);
631 goto error;
632 }
633
634 p = buflen >= 4 ? buffer[3] : 0;
635 n = buflen >= size ? buffer[size-1] : 0;
636
637 if (buflen < size + p*n) {
638 uvc_dbg(dev, DESCR,
639 "device %d videostreaming interface %d HEADER descriptor is invalid\n",
640 dev->udev->devnum, alts->desc.bInterfaceNumber);
641 goto error;
642 }
643
644 streaming->header.bNumFormats = p;
645 streaming->header.bEndpointAddress = buffer[6];
646 if (buffer[2] == UVC_VS_INPUT_HEADER) {
647 streaming->header.bmInfo = buffer[7];
648 streaming->header.bTerminalLink = buffer[8];
649 streaming->header.bStillCaptureMethod = buffer[9];
650 streaming->header.bTriggerSupport = buffer[10];
651 streaming->header.bTriggerUsage = buffer[11];
652 } else {
653 streaming->header.bTerminalLink = buffer[7];
654 }
655 streaming->header.bControlSize = n;
656
657 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
658 GFP_KERNEL);
659 if (streaming->header.bmaControls == NULL) {
660 ret = -ENOMEM;
661 goto error;
662 }
663
664 buflen -= buffer[0];
665 buffer += buffer[0];
666
667 _buffer = buffer;
668 _buflen = buflen;
669
670 /* Count the format and frame descriptors. */
671 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
672 switch (_buffer[2]) {
673 case UVC_VS_FORMAT_UNCOMPRESSED:
674 case UVC_VS_FORMAT_MJPEG:
675 case UVC_VS_FORMAT_FRAME_BASED:
676 nformats++;
677 break;
678
679 case UVC_VS_FORMAT_DV:
680 /*
681 * DV format has no frame descriptor. We will create a
682 * dummy frame descriptor with a dummy frame interval.
683 */
684 nformats++;
685 nframes++;
686 nintervals++;
687 break;
688
689 case UVC_VS_FORMAT_MPEG2TS:
690 case UVC_VS_FORMAT_STREAM_BASED:
691 uvc_dbg(dev, DESCR,
692 "device %d videostreaming interface %d FORMAT %u is not supported\n",
693 dev->udev->devnum,
694 alts->desc.bInterfaceNumber, _buffer[2]);
695 break;
696
697 case UVC_VS_FRAME_UNCOMPRESSED:
698 case UVC_VS_FRAME_MJPEG:
699 nframes++;
700 if (_buflen > 25)
701 nintervals += _buffer[25] ? _buffer[25] : 3;
702 break;
703
704 case UVC_VS_FRAME_FRAME_BASED:
705 nframes++;
706 if (_buflen > 21)
707 nintervals += _buffer[21] ? _buffer[21] : 3;
708 break;
709 }
710
711 _buflen -= _buffer[0];
712 _buffer += _buffer[0];
713 }
714
715 if (nformats == 0) {
716 uvc_dbg(dev, DESCR,
717 "device %d videostreaming interface %d has no supported formats defined\n",
718 dev->udev->devnum, alts->desc.bInterfaceNumber);
719 goto error;
720 }
721
722 /*
723 * Allocate memory for the formats, the frames and the intervals,
724 * plus any required padding to guarantee that everything has the
725 * correct alignment.
726 */
727 size = nformats * sizeof(*format);
728 size = ALIGN(size, __alignof__(*frame)) + nframes * sizeof(*frame);
729 size = ALIGN(size, __alignof__(*interval))
730 + nintervals * sizeof(*interval);
731
732 format = kzalloc(size, GFP_KERNEL);
733 if (!format) {
734 ret = -ENOMEM;
735 goto error;
736 }
737
738 frame = (void *)format + nformats * sizeof(*format);
739 frame = PTR_ALIGN(frame, __alignof__(*frame));
740 interval = (void *)frame + nframes * sizeof(*frame);
741 interval = PTR_ALIGN(interval, __alignof__(*interval));
742
743 streaming->formats = format;
744 streaming->nformats = 0;
745
746 /* Parse the format descriptors. */
747 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
748 switch (buffer[2]) {
749 case UVC_VS_FORMAT_UNCOMPRESSED:
750 case UVC_VS_FORMAT_MJPEG:
751 case UVC_VS_FORMAT_DV:
752 case UVC_VS_FORMAT_FRAME_BASED:
753 ret = uvc_parse_format(dev, streaming, format, frame,
754 &interval, buffer, buflen);
755 if (ret < 0)
756 goto error;
757 if (!ret)
758 break;
759
760 streaming->nformats++;
761 frame += format->nframes;
762 format++;
763
764 buflen -= ret;
765 buffer += ret;
766 continue;
767
768 default:
769 break;
770 }
771
772 buflen -= buffer[0];
773 buffer += buffer[0];
774 }
775
776 if (buflen)
777 uvc_dbg(dev, DESCR,
778 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
779 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
780
781 /* Parse the alternate settings to find the maximum bandwidth. */
782 for (i = 0; i < intf->num_altsetting; ++i) {
783 struct usb_host_endpoint *ep;
784
785 alts = &intf->altsetting[i];
786 ep = uvc_find_endpoint(alts,
787 streaming->header.bEndpointAddress);
788 if (ep == NULL)
789 continue;
790 psize = usb_endpoint_max_periodic_payload(dev->udev, ep);
791 if (psize > streaming->maxpsize)
792 streaming->maxpsize = psize;
793 }
794
795 list_add_tail(&streaming->list, &dev->streams);
796 return 0;
797
798 error:
799 usb_driver_release_interface(&uvc_driver, intf);
800 uvc_stream_delete(streaming);
801 return ret;
802 }
803
804 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
805 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER;
806 static const u8 uvc_media_transport_input_guid[16] =
807 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
808 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
809
uvc_alloc_new_entity(struct uvc_device * dev,u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)810 static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type,
811 u16 id, unsigned int num_pads,
812 unsigned int extra_size)
813 {
814 struct uvc_entity *entity;
815 unsigned int num_inputs;
816 unsigned int size;
817 unsigned int i;
818
819 /* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */
820 if (id == 0) {
821 dev_err(&dev->intf->dev, "Found Unit with invalid ID 0\n");
822 id = UVC_INVALID_ENTITY_ID;
823 }
824
825 /* Per UVC 1.1+ spec 3.7.2, the ID is unique. */
826 if (uvc_entity_by_id(dev, id)) {
827 dev_err(&dev->intf->dev, "Found multiple Units with ID %u\n", id);
828 id = UVC_INVALID_ENTITY_ID;
829 }
830
831 extra_size = roundup(extra_size, sizeof(*entity->pads));
832 if (num_pads)
833 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
834 else
835 num_inputs = 0;
836 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
837 + num_inputs;
838 entity = kzalloc(size, GFP_KERNEL);
839 if (entity == NULL)
840 return ERR_PTR(-ENOMEM);
841
842 entity->id = id;
843 entity->type = type;
844
845 /*
846 * Set the GUID for standard entity types. For extension units, the GUID
847 * is initialized by the caller.
848 */
849 switch (type) {
850 case UVC_EXT_GPIO_UNIT:
851 memcpy(entity->guid, uvc_gpio_guid, 16);
852 break;
853 case UVC_ITT_CAMERA:
854 memcpy(entity->guid, uvc_camera_guid, 16);
855 break;
856 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
857 memcpy(entity->guid, uvc_media_transport_input_guid, 16);
858 break;
859 case UVC_VC_PROCESSING_UNIT:
860 memcpy(entity->guid, uvc_processing_guid, 16);
861 break;
862 }
863
864 entity->num_links = 0;
865 entity->num_pads = num_pads;
866 entity->pads = ((void *)(entity + 1)) + extra_size;
867
868 for (i = 0; i < num_inputs; ++i)
869 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
870 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
871 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
872
873 entity->bNrInPins = num_inputs;
874 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
875
876 return entity;
877 }
878
uvc_entity_set_name(struct uvc_device * dev,struct uvc_entity * entity,const char * type_name,u8 string_id)879 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity,
880 const char *type_name, u8 string_id)
881 {
882 int ret;
883
884 /*
885 * First attempt to read the entity name from the device. If the entity
886 * has no associated string, or if reading the string fails (most
887 * likely due to a buggy firmware), fall back to default names based on
888 * the entity type.
889 */
890 if (string_id) {
891 ret = usb_string(dev->udev, string_id, entity->name,
892 sizeof(entity->name));
893 if (!ret)
894 return;
895 }
896
897 sprintf(entity->name, "%s %u", type_name, entity->id);
898 }
899
900 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)901 static int uvc_parse_vendor_control(struct uvc_device *dev,
902 const unsigned char *buffer, int buflen)
903 {
904 struct usb_device *udev = dev->udev;
905 struct usb_host_interface *alts = dev->intf->cur_altsetting;
906 struct uvc_entity *unit;
907 unsigned int n, p;
908 int handled = 0;
909
910 switch (le16_to_cpu(udev->descriptor.idVendor)) {
911 case 0x046d: /* Logitech */
912 if (buffer[1] != 0x41 || buffer[2] != 0x01)
913 break;
914
915 /*
916 * Logitech implements several vendor specific functions
917 * through vendor specific extension units (LXU).
918 *
919 * The LXU descriptors are similar to XU descriptors
920 * (see "USB Device Video Class for Video Devices", section
921 * 3.7.2.6 "Extension Unit Descriptor") with the following
922 * differences:
923 *
924 * ----------------------------------------------------------
925 * 0 bLength 1 Number
926 * Size of this descriptor, in bytes: 24+p+n*2
927 * ----------------------------------------------------------
928 * 23+p+n bmControlsType N Bitmap
929 * Individual bits in the set are defined:
930 * 0: Absolute
931 * 1: Relative
932 *
933 * This bitset is mapped exactly the same as bmControls.
934 * ----------------------------------------------------------
935 * 23+p+n*2 bReserved 1 Boolean
936 * ----------------------------------------------------------
937 * 24+p+n*2 iExtension 1 Index
938 * Index of a string descriptor that describes this
939 * extension unit.
940 * ----------------------------------------------------------
941 */
942 p = buflen >= 22 ? buffer[21] : 0;
943 n = buflen >= 25 + p ? buffer[22+p] : 0;
944
945 if (buflen < 25 + p + 2*n) {
946 uvc_dbg(dev, DESCR,
947 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
948 udev->devnum, alts->desc.bInterfaceNumber);
949 break;
950 }
951
952 unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT,
953 buffer[3], p + 1, 2 * n);
954 if (IS_ERR(unit))
955 return PTR_ERR(unit);
956
957 memcpy(unit->guid, &buffer[4], 16);
958 unit->extension.bNumControls = buffer[20];
959 memcpy(unit->baSourceID, &buffer[22], p);
960 unit->extension.bControlSize = buffer[22+p];
961 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
962 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
963 + n;
964 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
965
966 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]);
967
968 list_add_tail(&unit->list, &dev->entities);
969 handled = 1;
970 break;
971 }
972
973 return handled;
974 }
975
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)976 static int uvc_parse_standard_control(struct uvc_device *dev,
977 const unsigned char *buffer, int buflen)
978 {
979 struct usb_device *udev = dev->udev;
980 struct uvc_entity *unit, *term;
981 struct usb_interface *intf;
982 struct usb_host_interface *alts = dev->intf->cur_altsetting;
983 unsigned int i, n, p, len;
984 const char *type_name;
985 u16 type;
986
987 switch (buffer[2]) {
988 case UVC_VC_HEADER:
989 n = buflen >= 12 ? buffer[11] : 0;
990
991 if (buflen < 12 + n) {
992 uvc_dbg(dev, DESCR,
993 "device %d videocontrol interface %d HEADER error\n",
994 udev->devnum, alts->desc.bInterfaceNumber);
995 return -EINVAL;
996 }
997
998 dev->uvc_version = get_unaligned_le16(&buffer[3]);
999 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
1000
1001 /* Parse all USB Video Streaming interfaces. */
1002 for (i = 0; i < n; ++i) {
1003 intf = usb_ifnum_to_if(udev, buffer[12+i]);
1004 if (intf == NULL) {
1005 uvc_dbg(dev, DESCR,
1006 "device %d interface %d doesn't exists\n",
1007 udev->devnum, i);
1008 continue;
1009 }
1010
1011 uvc_parse_streaming(dev, intf);
1012 }
1013 break;
1014
1015 case UVC_VC_INPUT_TERMINAL:
1016 if (buflen < 8) {
1017 uvc_dbg(dev, DESCR,
1018 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
1019 udev->devnum, alts->desc.bInterfaceNumber);
1020 return -EINVAL;
1021 }
1022
1023 /*
1024 * Reject invalid terminal types that would cause issues:
1025 *
1026 * - The high byte must be non-zero, otherwise it would be
1027 * confused with a unit.
1028 *
1029 * - Bit 15 must be 0, as we use it internally as a terminal
1030 * direction flag.
1031 *
1032 * Other unknown types are accepted.
1033 */
1034 type = get_unaligned_le16(&buffer[4]);
1035 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
1036 uvc_dbg(dev, DESCR,
1037 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1038 udev->devnum, alts->desc.bInterfaceNumber,
1039 buffer[3], type);
1040 return 0;
1041 }
1042
1043 n = 0;
1044 p = 0;
1045 len = 8;
1046
1047 if (type == UVC_ITT_CAMERA) {
1048 n = buflen >= 15 ? buffer[14] : 0;
1049 len = 15;
1050
1051 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1052 n = buflen >= 9 ? buffer[8] : 0;
1053 p = buflen >= 10 + n ? buffer[9+n] : 0;
1054 len = 10;
1055 }
1056
1057 if (buflen < len + n + p) {
1058 uvc_dbg(dev, DESCR,
1059 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
1060 udev->devnum, alts->desc.bInterfaceNumber);
1061 return -EINVAL;
1062 }
1063
1064 term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT,
1065 buffer[3], 1, n + p);
1066 if (IS_ERR(term))
1067 return PTR_ERR(term);
1068
1069 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1070 term->camera.bControlSize = n;
1071 term->camera.bmControls = (u8 *)term + sizeof(*term);
1072 term->camera.wObjectiveFocalLengthMin =
1073 get_unaligned_le16(&buffer[8]);
1074 term->camera.wObjectiveFocalLengthMax =
1075 get_unaligned_le16(&buffer[10]);
1076 term->camera.wOcularFocalLength =
1077 get_unaligned_le16(&buffer[12]);
1078 memcpy(term->camera.bmControls, &buffer[15], n);
1079 } else if (UVC_ENTITY_TYPE(term) ==
1080 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1081 term->media.bControlSize = n;
1082 term->media.bmControls = (u8 *)term + sizeof(*term);
1083 term->media.bTransportModeSize = p;
1084 term->media.bmTransportModes = (u8 *)term
1085 + sizeof(*term) + n;
1086 memcpy(term->media.bmControls, &buffer[9], n);
1087 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1088 }
1089
1090 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1091 type_name = "Camera";
1092 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1093 type_name = "Media";
1094 else
1095 type_name = "Input";
1096
1097 uvc_entity_set_name(dev, term, type_name, buffer[7]);
1098
1099 list_add_tail(&term->list, &dev->entities);
1100 break;
1101
1102 case UVC_VC_OUTPUT_TERMINAL:
1103 if (buflen < 9) {
1104 uvc_dbg(dev, DESCR,
1105 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
1106 udev->devnum, alts->desc.bInterfaceNumber);
1107 return -EINVAL;
1108 }
1109
1110 /*
1111 * Make sure the terminal type MSB is not null, otherwise it
1112 * could be confused with a unit.
1113 */
1114 type = get_unaligned_le16(&buffer[4]);
1115 if ((type & 0xff00) == 0) {
1116 uvc_dbg(dev, DESCR,
1117 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1118 udev->devnum, alts->desc.bInterfaceNumber,
1119 buffer[3], type);
1120 return 0;
1121 }
1122
1123 term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT,
1124 buffer[3], 1, 0);
1125 if (IS_ERR(term))
1126 return PTR_ERR(term);
1127
1128 memcpy(term->baSourceID, &buffer[7], 1);
1129
1130 uvc_entity_set_name(dev, term, "Output", buffer[8]);
1131
1132 list_add_tail(&term->list, &dev->entities);
1133 break;
1134
1135 case UVC_VC_SELECTOR_UNIT:
1136 p = buflen >= 5 ? buffer[4] : 0;
1137
1138 if (buflen < 5 || buflen < 6 + p) {
1139 uvc_dbg(dev, DESCR,
1140 "device %d videocontrol interface %d SELECTOR_UNIT error\n",
1141 udev->devnum, alts->desc.bInterfaceNumber);
1142 return -EINVAL;
1143 }
1144
1145 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
1146 p + 1, 0);
1147 if (IS_ERR(unit))
1148 return PTR_ERR(unit);
1149
1150 memcpy(unit->baSourceID, &buffer[5], p);
1151
1152 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]);
1153
1154 list_add_tail(&unit->list, &dev->entities);
1155 break;
1156
1157 case UVC_VC_PROCESSING_UNIT:
1158 n = buflen >= 8 ? buffer[7] : 0;
1159 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1160
1161 if (buflen < p + n) {
1162 uvc_dbg(dev, DESCR,
1163 "device %d videocontrol interface %d PROCESSING_UNIT error\n",
1164 udev->devnum, alts->desc.bInterfaceNumber);
1165 return -EINVAL;
1166 }
1167
1168 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n);
1169 if (IS_ERR(unit))
1170 return PTR_ERR(unit);
1171
1172 memcpy(unit->baSourceID, &buffer[4], 1);
1173 unit->processing.wMaxMultiplier =
1174 get_unaligned_le16(&buffer[5]);
1175 unit->processing.bControlSize = buffer[7];
1176 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1177 memcpy(unit->processing.bmControls, &buffer[8], n);
1178 if (dev->uvc_version >= 0x0110)
1179 unit->processing.bmVideoStandards = buffer[9+n];
1180
1181 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]);
1182
1183 list_add_tail(&unit->list, &dev->entities);
1184 break;
1185
1186 case UVC_VC_EXTENSION_UNIT:
1187 p = buflen >= 22 ? buffer[21] : 0;
1188 n = buflen >= 24 + p ? buffer[22+p] : 0;
1189
1190 if (buflen < 24 + p + n) {
1191 uvc_dbg(dev, DESCR,
1192 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
1193 udev->devnum, alts->desc.bInterfaceNumber);
1194 return -EINVAL;
1195 }
1196
1197 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
1198 p + 1, n);
1199 if (IS_ERR(unit))
1200 return PTR_ERR(unit);
1201
1202 memcpy(unit->guid, &buffer[4], 16);
1203 unit->extension.bNumControls = buffer[20];
1204 memcpy(unit->baSourceID, &buffer[22], p);
1205 unit->extension.bControlSize = buffer[22+p];
1206 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1207 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1208
1209 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]);
1210
1211 list_add_tail(&unit->list, &dev->entities);
1212 break;
1213
1214 default:
1215 uvc_dbg(dev, DESCR,
1216 "Found an unknown CS_INTERFACE descriptor (%u)\n",
1217 buffer[2]);
1218 break;
1219 }
1220
1221 return 0;
1222 }
1223
uvc_parse_control(struct uvc_device * dev)1224 static int uvc_parse_control(struct uvc_device *dev)
1225 {
1226 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1227 const unsigned char *buffer = alts->extra;
1228 int buflen = alts->extralen;
1229 int ret;
1230
1231 /*
1232 * Parse the default alternate setting only, as the UVC specification
1233 * defines a single alternate setting, the default alternate setting
1234 * zero.
1235 */
1236
1237 while (buflen > 2) {
1238 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1239 buffer[1] != USB_DT_CS_INTERFACE)
1240 goto next_descriptor;
1241
1242 ret = uvc_parse_standard_control(dev, buffer, buflen);
1243 if (ret < 0)
1244 return ret;
1245
1246 next_descriptor:
1247 buflen -= buffer[0];
1248 buffer += buffer[0];
1249 }
1250
1251 /*
1252 * Check if the optional status endpoint is present. Built-in iSight
1253 * webcams have an interrupt endpoint but spit proprietary data that
1254 * don't conform to the UVC status endpoint messages. Don't try to
1255 * handle the interrupt endpoint for those cameras.
1256 */
1257 if (alts->desc.bNumEndpoints == 1 &&
1258 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1259 struct usb_host_endpoint *ep = &alts->endpoint[0];
1260 struct usb_endpoint_descriptor *desc = &ep->desc;
1261
1262 if (usb_endpoint_is_int_in(desc) &&
1263 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1264 desc->bInterval != 0) {
1265 uvc_dbg(dev, DESCR,
1266 "Found a Status endpoint (addr %02x)\n",
1267 desc->bEndpointAddress);
1268 dev->int_ep = ep;
1269 }
1270 }
1271
1272 return 0;
1273 }
1274
1275 /* -----------------------------------------------------------------------------
1276 * Privacy GPIO
1277 */
1278
uvc_gpio_event(struct uvc_device * dev)1279 static void uvc_gpio_event(struct uvc_device *dev)
1280 {
1281 struct uvc_entity *unit = dev->gpio_unit;
1282 struct uvc_video_chain *chain;
1283 u8 new_val;
1284
1285 if (!unit)
1286 return;
1287
1288 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy);
1289
1290 /* GPIO entities are always on the first chain. */
1291 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list);
1292 uvc_ctrl_status_event(chain, unit->controls, &new_val);
1293 }
1294
uvc_gpio_get_cur(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,void * data,u16 size)1295 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity,
1296 u8 cs, void *data, u16 size)
1297 {
1298 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1)
1299 return -EINVAL;
1300
1301 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy);
1302
1303 return 0;
1304 }
1305
uvc_gpio_get_info(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,u8 * caps)1306 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity,
1307 u8 cs, u8 *caps)
1308 {
1309 if (cs != UVC_CT_PRIVACY_CONTROL)
1310 return -EINVAL;
1311
1312 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE;
1313 return 0;
1314 }
1315
uvc_gpio_irq(int irq,void * data)1316 static irqreturn_t uvc_gpio_irq(int irq, void *data)
1317 {
1318 struct uvc_device *dev = data;
1319
1320 uvc_gpio_event(dev);
1321 return IRQ_HANDLED;
1322 }
1323
uvc_gpio_parse(struct uvc_device * dev)1324 static int uvc_gpio_parse(struct uvc_device *dev)
1325 {
1326 struct uvc_entity *unit;
1327 struct gpio_desc *gpio_privacy;
1328 int irq;
1329
1330 gpio_privacy = devm_gpiod_get_optional(&dev->intf->dev, "privacy",
1331 GPIOD_IN);
1332 if (!gpio_privacy)
1333 return 0;
1334
1335 if (IS_ERR(gpio_privacy))
1336 return dev_err_probe(&dev->intf->dev,
1337 PTR_ERR(gpio_privacy),
1338 "Can't get privacy GPIO\n");
1339
1340 irq = gpiod_to_irq(gpio_privacy);
1341 if (irq < 0)
1342 return dev_err_probe(&dev->intf->dev, irq,
1343 "No IRQ for privacy GPIO\n");
1344
1345 unit = uvc_alloc_new_entity(dev, UVC_EXT_GPIO_UNIT,
1346 UVC_EXT_GPIO_UNIT_ID, 0, 1);
1347 if (IS_ERR(unit))
1348 return PTR_ERR(unit);
1349
1350 unit->gpio.gpio_privacy = gpio_privacy;
1351 unit->gpio.irq = irq;
1352 unit->gpio.bControlSize = 1;
1353 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit);
1354 unit->gpio.bmControls[0] = 1;
1355 unit->get_cur = uvc_gpio_get_cur;
1356 unit->get_info = uvc_gpio_get_info;
1357 strscpy(unit->name, "GPIO", sizeof(unit->name));
1358
1359 list_add_tail(&unit->list, &dev->entities);
1360
1361 dev->gpio_unit = unit;
1362
1363 return 0;
1364 }
1365
uvc_gpio_init_irq(struct uvc_device * dev)1366 static int uvc_gpio_init_irq(struct uvc_device *dev)
1367 {
1368 struct uvc_entity *unit = dev->gpio_unit;
1369 int ret;
1370
1371 if (!unit || unit->gpio.irq < 0)
1372 return 0;
1373
1374 ret = request_threaded_irq(unit->gpio.irq, NULL, uvc_gpio_irq,
1375 IRQF_ONESHOT | IRQF_TRIGGER_FALLING |
1376 IRQF_TRIGGER_RISING,
1377 "uvc_privacy_gpio", dev);
1378
1379 unit->gpio.initialized = !ret;
1380
1381 return ret;
1382 }
1383
uvc_gpio_deinit(struct uvc_device * dev)1384 static void uvc_gpio_deinit(struct uvc_device *dev)
1385 {
1386 if (!dev->gpio_unit || !dev->gpio_unit->gpio.initialized)
1387 return;
1388
1389 free_irq(dev->gpio_unit->gpio.irq, dev);
1390 }
1391
1392 /* ------------------------------------------------------------------------
1393 * UVC device scan
1394 */
1395
1396 /*
1397 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1398 * and containing the following units:
1399 *
1400 * - one or more Output Terminals (USB Streaming or Display)
1401 * - zero or one Processing Unit
1402 * - zero, one or more single-input Selector Units
1403 * - zero or one multiple-input Selector Units, provided all inputs are
1404 * connected to input terminals
1405 * - zero, one or mode single-input Extension Units
1406 * - one or more Input Terminals (Camera, External or USB Streaming)
1407 *
1408 * The terminal and units must match on of the following structures:
1409 *
1410 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1411 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1412 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1413 *
1414 * +---------+ +---------+ -> OTT_*(0)
1415 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1416 * +---------+ +---------+ -> OTT_*(n)
1417 *
1418 * The Processing Unit and Extension Units can be in any order. Additional
1419 * Extension Units connected to the main chain as single-unit branches are
1420 * also supported. Single-input Selector Units are ignored.
1421 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1422 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1423 struct uvc_entity *entity)
1424 {
1425 switch (UVC_ENTITY_TYPE(entity)) {
1426 case UVC_VC_EXTENSION_UNIT:
1427 uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
1428
1429 if (entity->bNrInPins != 1) {
1430 uvc_dbg(chain->dev, DESCR,
1431 "Extension unit %d has more than 1 input pin\n",
1432 entity->id);
1433 return -1;
1434 }
1435
1436 break;
1437
1438 case UVC_VC_PROCESSING_UNIT:
1439 uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
1440
1441 if (chain->processing != NULL) {
1442 uvc_dbg(chain->dev, DESCR,
1443 "Found multiple Processing Units in chain\n");
1444 return -1;
1445 }
1446
1447 chain->processing = entity;
1448 break;
1449
1450 case UVC_VC_SELECTOR_UNIT:
1451 uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
1452
1453 /* Single-input selector units are ignored. */
1454 if (entity->bNrInPins == 1)
1455 break;
1456
1457 if (chain->selector != NULL) {
1458 uvc_dbg(chain->dev, DESCR,
1459 "Found multiple Selector Units in chain\n");
1460 return -1;
1461 }
1462
1463 chain->selector = entity;
1464 break;
1465
1466 case UVC_ITT_VENDOR_SPECIFIC:
1467 case UVC_ITT_CAMERA:
1468 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1469 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1470
1471 break;
1472
1473 case UVC_OTT_VENDOR_SPECIFIC:
1474 case UVC_OTT_DISPLAY:
1475 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1476 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1477
1478 break;
1479
1480 case UVC_TT_STREAMING:
1481 if (UVC_ENTITY_IS_ITERM(entity))
1482 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1483 else
1484 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1485
1486 break;
1487
1488 default:
1489 uvc_dbg(chain->dev, DESCR,
1490 "Unsupported entity type 0x%04x found in chain\n",
1491 UVC_ENTITY_TYPE(entity));
1492 return -1;
1493 }
1494
1495 list_add_tail(&entity->chain, &chain->entities);
1496 return 0;
1497 }
1498
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1499 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1500 struct uvc_entity *entity, struct uvc_entity *prev)
1501 {
1502 struct uvc_entity *forward;
1503 int found;
1504
1505 /* Forward scan */
1506 forward = NULL;
1507 found = 0;
1508
1509 while (1) {
1510 forward = uvc_entity_by_reference(chain->dev, entity->id,
1511 forward);
1512 if (forward == NULL)
1513 break;
1514 if (forward == prev)
1515 continue;
1516 if (forward->chain.next || forward->chain.prev) {
1517 uvc_dbg(chain->dev, DESCR,
1518 "Found reference to entity %d already in chain\n",
1519 forward->id);
1520 return -EINVAL;
1521 }
1522
1523 switch (UVC_ENTITY_TYPE(forward)) {
1524 case UVC_VC_EXTENSION_UNIT:
1525 if (forward->bNrInPins != 1) {
1526 uvc_dbg(chain->dev, DESCR,
1527 "Extension unit %d has more than 1 input pin\n",
1528 forward->id);
1529 return -EINVAL;
1530 }
1531
1532 /*
1533 * Some devices reference an output terminal as the
1534 * source of extension units. This is incorrect, as
1535 * output terminals only have an input pin, and thus
1536 * can't be connected to any entity in the forward
1537 * direction. The resulting topology would cause issues
1538 * when registering the media controller graph. To
1539 * avoid this problem, connect the extension unit to
1540 * the source of the output terminal instead.
1541 */
1542 if (UVC_ENTITY_IS_OTERM(entity)) {
1543 struct uvc_entity *source;
1544
1545 source = uvc_entity_by_id(chain->dev,
1546 entity->baSourceID[0]);
1547 if (!source) {
1548 uvc_dbg(chain->dev, DESCR,
1549 "Can't connect extension unit %u in chain\n",
1550 forward->id);
1551 break;
1552 }
1553
1554 forward->baSourceID[0] = source->id;
1555 }
1556
1557 list_add_tail(&forward->chain, &chain->entities);
1558 if (!found)
1559 uvc_dbg_cont(PROBE, " (->");
1560
1561 uvc_dbg_cont(PROBE, " XU %d", forward->id);
1562 found = 1;
1563 break;
1564
1565 case UVC_OTT_VENDOR_SPECIFIC:
1566 case UVC_OTT_DISPLAY:
1567 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1568 case UVC_TT_STREAMING:
1569 if (UVC_ENTITY_IS_ITERM(forward)) {
1570 uvc_dbg(chain->dev, DESCR,
1571 "Unsupported input terminal %u\n",
1572 forward->id);
1573 return -EINVAL;
1574 }
1575
1576 if (UVC_ENTITY_IS_OTERM(entity)) {
1577 uvc_dbg(chain->dev, DESCR,
1578 "Unsupported connection between output terminals %u and %u\n",
1579 entity->id, forward->id);
1580 break;
1581 }
1582
1583 list_add_tail(&forward->chain, &chain->entities);
1584 if (!found)
1585 uvc_dbg_cont(PROBE, " (->");
1586
1587 uvc_dbg_cont(PROBE, " OT %d", forward->id);
1588 found = 1;
1589 break;
1590 }
1591 }
1592 if (found)
1593 uvc_dbg_cont(PROBE, ")");
1594
1595 return 0;
1596 }
1597
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1598 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1599 struct uvc_entity **_entity)
1600 {
1601 struct uvc_entity *entity = *_entity;
1602 struct uvc_entity *term;
1603 int id = -EINVAL, i;
1604
1605 switch (UVC_ENTITY_TYPE(entity)) {
1606 case UVC_VC_EXTENSION_UNIT:
1607 case UVC_VC_PROCESSING_UNIT:
1608 id = entity->baSourceID[0];
1609 break;
1610
1611 case UVC_VC_SELECTOR_UNIT:
1612 /* Single-input selector units are ignored. */
1613 if (entity->bNrInPins == 1) {
1614 id = entity->baSourceID[0];
1615 break;
1616 }
1617
1618 uvc_dbg_cont(PROBE, " <- IT");
1619
1620 chain->selector = entity;
1621 for (i = 0; i < entity->bNrInPins; ++i) {
1622 id = entity->baSourceID[i];
1623 term = uvc_entity_by_id(chain->dev, id);
1624 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1625 uvc_dbg(chain->dev, DESCR,
1626 "Selector unit %d input %d isn't connected to an input terminal\n",
1627 entity->id, i);
1628 return -1;
1629 }
1630
1631 if (term->chain.next || term->chain.prev) {
1632 uvc_dbg(chain->dev, DESCR,
1633 "Found reference to entity %d already in chain\n",
1634 term->id);
1635 return -EINVAL;
1636 }
1637
1638 uvc_dbg_cont(PROBE, " %d", term->id);
1639
1640 list_add_tail(&term->chain, &chain->entities);
1641 uvc_scan_chain_forward(chain, term, entity);
1642 }
1643
1644 uvc_dbg_cont(PROBE, "\n");
1645
1646 id = 0;
1647 break;
1648
1649 case UVC_ITT_VENDOR_SPECIFIC:
1650 case UVC_ITT_CAMERA:
1651 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1652 case UVC_OTT_VENDOR_SPECIFIC:
1653 case UVC_OTT_DISPLAY:
1654 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1655 case UVC_TT_STREAMING:
1656 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1657 break;
1658 }
1659
1660 if (id <= 0) {
1661 *_entity = NULL;
1662 return id;
1663 }
1664
1665 entity = uvc_entity_by_id(chain->dev, id);
1666 if (entity == NULL) {
1667 uvc_dbg(chain->dev, DESCR,
1668 "Found reference to unknown entity %d\n", id);
1669 return -EINVAL;
1670 }
1671
1672 *_entity = entity;
1673 return 0;
1674 }
1675
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1676 static int uvc_scan_chain(struct uvc_video_chain *chain,
1677 struct uvc_entity *term)
1678 {
1679 struct uvc_entity *entity, *prev;
1680
1681 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
1682
1683 entity = term;
1684 prev = NULL;
1685
1686 while (entity != NULL) {
1687 /* Entity must not be part of an existing chain */
1688 if (entity->chain.next || entity->chain.prev) {
1689 uvc_dbg(chain->dev, DESCR,
1690 "Found reference to entity %d already in chain\n",
1691 entity->id);
1692 return -EINVAL;
1693 }
1694
1695 /* Process entity */
1696 if (uvc_scan_chain_entity(chain, entity) < 0)
1697 return -EINVAL;
1698
1699 /* Forward scan */
1700 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1701 return -EINVAL;
1702
1703 /* Backward scan */
1704 prev = entity;
1705 if (uvc_scan_chain_backward(chain, &entity) < 0)
1706 return -EINVAL;
1707 }
1708
1709 return 0;
1710 }
1711
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1712 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1713 char *buffer)
1714 {
1715 struct uvc_entity *term;
1716 unsigned int nterms = 0;
1717 char *p = buffer;
1718
1719 list_for_each_entry(term, terms, chain) {
1720 if (!UVC_ENTITY_IS_TERM(term) ||
1721 UVC_TERM_DIRECTION(term) != dir)
1722 continue;
1723
1724 if (nterms)
1725 p += sprintf(p, ",");
1726 if (++nterms >= 4) {
1727 p += sprintf(p, "...");
1728 break;
1729 }
1730 p += sprintf(p, "%u", term->id);
1731 }
1732
1733 return p - buffer;
1734 }
1735
uvc_print_chain(struct uvc_video_chain * chain)1736 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1737 {
1738 static char buffer[43];
1739 char *p = buffer;
1740
1741 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1742 p += sprintf(p, " -> ");
1743 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1744
1745 return buffer;
1746 }
1747
uvc_alloc_chain(struct uvc_device * dev)1748 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1749 {
1750 struct uvc_video_chain *chain;
1751
1752 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1753 if (chain == NULL)
1754 return NULL;
1755
1756 INIT_LIST_HEAD(&chain->entities);
1757 mutex_init(&chain->ctrl_mutex);
1758 chain->dev = dev;
1759 v4l2_prio_init(&chain->prio);
1760
1761 return chain;
1762 }
1763
1764 /*
1765 * Fallback heuristic for devices that don't connect units and terminals in a
1766 * valid chain.
1767 *
1768 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1769 * to fail, but if we just take the entities we can find and put them together
1770 * in the most sensible chain we can think of, turns out they do work anyway.
1771 * Note: This heuristic assumes there is a single chain.
1772 *
1773 * At the time of writing, devices known to have such a broken chain are
1774 * - Acer Integrated Camera (5986:055a)
1775 * - Realtek rtl157a7 (0bda:57a7)
1776 */
uvc_scan_fallback(struct uvc_device * dev)1777 static int uvc_scan_fallback(struct uvc_device *dev)
1778 {
1779 struct uvc_video_chain *chain;
1780 struct uvc_entity *iterm = NULL;
1781 struct uvc_entity *oterm = NULL;
1782 struct uvc_entity *entity;
1783 struct uvc_entity *prev;
1784
1785 /*
1786 * Start by locating the input and output terminals. We only support
1787 * devices with exactly one of each for now.
1788 */
1789 list_for_each_entry(entity, &dev->entities, list) {
1790 if (UVC_ENTITY_IS_ITERM(entity)) {
1791 if (iterm)
1792 return -EINVAL;
1793 iterm = entity;
1794 }
1795
1796 if (UVC_ENTITY_IS_OTERM(entity)) {
1797 if (oterm)
1798 return -EINVAL;
1799 oterm = entity;
1800 }
1801 }
1802
1803 if (iterm == NULL || oterm == NULL)
1804 return -EINVAL;
1805
1806 /* Allocate the chain and fill it. */
1807 chain = uvc_alloc_chain(dev);
1808 if (chain == NULL)
1809 return -ENOMEM;
1810
1811 if (uvc_scan_chain_entity(chain, oterm) < 0)
1812 goto error;
1813
1814 prev = oterm;
1815
1816 /*
1817 * Add all Processing and Extension Units with two pads. The order
1818 * doesn't matter much, use reverse list traversal to connect units in
1819 * UVC descriptor order as we build the chain from output to input. This
1820 * leads to units appearing in the order meant by the manufacturer for
1821 * the cameras known to require this heuristic.
1822 */
1823 list_for_each_entry_reverse(entity, &dev->entities, list) {
1824 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1825 entity->type != UVC_VC_EXTENSION_UNIT)
1826 continue;
1827
1828 if (entity->num_pads != 2)
1829 continue;
1830
1831 if (uvc_scan_chain_entity(chain, entity) < 0)
1832 goto error;
1833
1834 prev->baSourceID[0] = entity->id;
1835 prev = entity;
1836 }
1837
1838 if (uvc_scan_chain_entity(chain, iterm) < 0)
1839 goto error;
1840
1841 prev->baSourceID[0] = iterm->id;
1842
1843 list_add_tail(&chain->list, &dev->chains);
1844
1845 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
1846 uvc_print_chain(chain));
1847
1848 return 0;
1849
1850 error:
1851 kfree(chain);
1852 return -EINVAL;
1853 }
1854
1855 /*
1856 * Scan the device for video chains and register video devices.
1857 *
1858 * Chains are scanned starting at their output terminals and walked backwards.
1859 */
uvc_scan_device(struct uvc_device * dev)1860 static int uvc_scan_device(struct uvc_device *dev)
1861 {
1862 struct uvc_video_chain *chain;
1863 struct uvc_entity *term;
1864
1865 list_for_each_entry(term, &dev->entities, list) {
1866 if (!UVC_ENTITY_IS_OTERM(term))
1867 continue;
1868
1869 /*
1870 * If the terminal is already included in a chain, skip it.
1871 * This can happen for chains that have multiple output
1872 * terminals, where all output terminals beside the first one
1873 * will be inserted in the chain in forward scans.
1874 */
1875 if (term->chain.next || term->chain.prev)
1876 continue;
1877
1878 chain = uvc_alloc_chain(dev);
1879 if (chain == NULL)
1880 return -ENOMEM;
1881
1882 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1883
1884 if (uvc_scan_chain(chain, term) < 0) {
1885 kfree(chain);
1886 continue;
1887 }
1888
1889 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
1890 uvc_print_chain(chain));
1891
1892 list_add_tail(&chain->list, &dev->chains);
1893 }
1894
1895 if (list_empty(&dev->chains))
1896 uvc_scan_fallback(dev);
1897
1898 if (list_empty(&dev->chains)) {
1899 dev_info(&dev->intf->dev, "No valid video chain found.\n");
1900 return -ENODEV;
1901 }
1902
1903 /* Add GPIO entity to the first chain. */
1904 if (dev->gpio_unit) {
1905 chain = list_first_entry(&dev->chains,
1906 struct uvc_video_chain, list);
1907 list_add_tail(&dev->gpio_unit->chain, &chain->entities);
1908 }
1909
1910 return 0;
1911 }
1912
1913 /* ------------------------------------------------------------------------
1914 * Video device registration and unregistration
1915 */
1916
1917 /*
1918 * Delete the UVC device.
1919 *
1920 * Called by the kernel when the last reference to the uvc_device structure
1921 * is released.
1922 *
1923 * As this function is called after or during disconnect(), all URBs have
1924 * already been cancelled by the USB core. There is no need to kill the
1925 * interrupt URB manually.
1926 */
uvc_delete(struct kref * kref)1927 static void uvc_delete(struct kref *kref)
1928 {
1929 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1930 struct list_head *p, *n;
1931
1932 uvc_status_cleanup(dev);
1933 uvc_ctrl_cleanup_device(dev);
1934
1935 usb_put_intf(dev->intf);
1936 usb_put_dev(dev->udev);
1937
1938 #ifdef CONFIG_MEDIA_CONTROLLER
1939 media_device_cleanup(&dev->mdev);
1940 #endif
1941
1942 list_for_each_safe(p, n, &dev->chains) {
1943 struct uvc_video_chain *chain;
1944
1945 chain = list_entry(p, struct uvc_video_chain, list);
1946 kfree(chain);
1947 }
1948
1949 list_for_each_safe(p, n, &dev->entities) {
1950 struct uvc_entity *entity;
1951
1952 entity = list_entry(p, struct uvc_entity, list);
1953 #ifdef CONFIG_MEDIA_CONTROLLER
1954 uvc_mc_cleanup_entity(entity);
1955 #endif
1956 kfree(entity);
1957 }
1958
1959 list_for_each_safe(p, n, &dev->streams) {
1960 struct uvc_streaming *streaming;
1961
1962 streaming = list_entry(p, struct uvc_streaming, list);
1963 usb_driver_release_interface(&uvc_driver, streaming->intf);
1964 uvc_stream_delete(streaming);
1965 }
1966
1967 kfree(dev);
1968 }
1969
uvc_release(struct video_device * vdev)1970 static void uvc_release(struct video_device *vdev)
1971 {
1972 struct uvc_streaming *stream = video_get_drvdata(vdev);
1973 struct uvc_device *dev = stream->dev;
1974
1975 kref_put(&dev->ref, uvc_delete);
1976 }
1977
1978 /*
1979 * Unregister the video devices.
1980 */
uvc_unregister_video(struct uvc_device * dev)1981 static void uvc_unregister_video(struct uvc_device *dev)
1982 {
1983 struct uvc_streaming *stream;
1984
1985 uvc_gpio_deinit(dev);
1986
1987 list_for_each_entry(stream, &dev->streams, list) {
1988 /* Nothing to do here, continue. */
1989 if (!video_is_registered(&stream->queue.vdev))
1990 continue;
1991
1992 vb2_video_unregister_device(&stream->queue.vdev);
1993 vb2_video_unregister_device(&stream->meta.queue.vdev);
1994
1995 /*
1996 * Now both vdevs are not streaming and all the ioctls will
1997 * return -ENODEV.
1998 */
1999
2000 uvc_debugfs_cleanup_stream(stream);
2001 }
2002
2003 uvc_status_unregister(dev);
2004
2005 if (dev->vdev.dev)
2006 v4l2_device_unregister(&dev->vdev);
2007 #ifdef CONFIG_MEDIA_CONTROLLER
2008 if (media_devnode_is_registered(dev->mdev.devnode))
2009 media_device_unregister(&dev->mdev);
2010 #endif
2011 }
2012
uvc_register_video_device(struct uvc_device * dev,struct uvc_streaming * stream,struct uvc_video_queue * queue,enum v4l2_buf_type type,const struct v4l2_file_operations * fops,const struct v4l2_ioctl_ops * ioctl_ops)2013 int uvc_register_video_device(struct uvc_device *dev,
2014 struct uvc_streaming *stream,
2015 struct uvc_video_queue *queue,
2016 enum v4l2_buf_type type,
2017 const struct v4l2_file_operations *fops,
2018 const struct v4l2_ioctl_ops *ioctl_ops)
2019 {
2020 struct video_device *vdev = &queue->vdev;
2021 int ret;
2022
2023 /* Initialize the video buffers queue. */
2024 ret = uvc_queue_init(queue, type);
2025 if (ret)
2026 return ret;
2027
2028 /* Register the device with V4L. */
2029
2030 /*
2031 * We already hold a reference to dev->udev. The video device will be
2032 * unregistered before the reference is released, so we don't need to
2033 * get another one.
2034 */
2035 vdev->v4l2_dev = &dev->vdev;
2036 vdev->fops = fops;
2037 vdev->ioctl_ops = ioctl_ops;
2038 vdev->release = uvc_release;
2039 vdev->prio = &stream->chain->prio;
2040 vdev->queue = &queue->queue;
2041 vdev->lock = &queue->mutex;
2042 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2043 vdev->vfl_dir = VFL_DIR_TX;
2044 else
2045 vdev->vfl_dir = VFL_DIR_RX;
2046
2047 switch (type) {
2048 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2049 default:
2050 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
2051 break;
2052 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2053 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
2054 break;
2055 case V4L2_BUF_TYPE_META_CAPTURE:
2056 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
2057 break;
2058 }
2059
2060 strscpy(vdev->name, dev->name, sizeof(vdev->name));
2061
2062 /*
2063 * Set the driver data before calling video_register_device, otherwise
2064 * the file open() handler might race us.
2065 */
2066 video_set_drvdata(vdev, stream);
2067
2068 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
2069 if (ret < 0) {
2070 dev_err(&stream->intf->dev,
2071 "Failed to register %s device (%d).\n",
2072 v4l2_type_names[type], ret);
2073 return ret;
2074 }
2075
2076 kref_get(&dev->ref);
2077 return 0;
2078 }
2079
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)2080 static int uvc_register_video(struct uvc_device *dev,
2081 struct uvc_streaming *stream)
2082 {
2083 int ret;
2084
2085 /* Initialize the streaming interface with default parameters. */
2086 ret = uvc_video_init(stream);
2087 if (ret < 0) {
2088 dev_err(&stream->intf->dev,
2089 "Failed to initialize the device (%d).\n", ret);
2090 return ret;
2091 }
2092
2093 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2094 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2095 | V4L2_CAP_META_CAPTURE;
2096 else
2097 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2098
2099 uvc_debugfs_init_stream(stream);
2100
2101 /* Register the device with V4L. */
2102 return uvc_register_video_device(dev, stream, &stream->queue,
2103 stream->type, &uvc_fops,
2104 &uvc_ioctl_ops);
2105 }
2106
2107 /*
2108 * Register all video devices in all chains.
2109 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2110 static int uvc_register_terms(struct uvc_device *dev,
2111 struct uvc_video_chain *chain)
2112 {
2113 struct uvc_streaming *stream;
2114 struct uvc_entity *term;
2115 int ret;
2116
2117 list_for_each_entry(term, &chain->entities, chain) {
2118 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2119 continue;
2120
2121 stream = uvc_stream_by_id(dev, term->id);
2122 if (stream == NULL) {
2123 dev_info(&dev->intf->dev,
2124 "No streaming interface found for terminal %u.",
2125 term->id);
2126 continue;
2127 }
2128
2129 stream->chain = chain;
2130 ret = uvc_register_video(dev, stream);
2131 if (ret < 0)
2132 return ret;
2133
2134 /*
2135 * Register a metadata node, but ignore a possible failure,
2136 * complete registration of video nodes anyway.
2137 */
2138 uvc_meta_register(stream);
2139
2140 term->vdev = &stream->queue.vdev;
2141 }
2142
2143 return 0;
2144 }
2145
uvc_register_chains(struct uvc_device * dev)2146 static int uvc_register_chains(struct uvc_device *dev)
2147 {
2148 struct uvc_video_chain *chain;
2149 int ret;
2150
2151 list_for_each_entry(chain, &dev->chains, list) {
2152 ret = uvc_register_terms(dev, chain);
2153 if (ret < 0)
2154 return ret;
2155
2156 #ifdef CONFIG_MEDIA_CONTROLLER
2157 ret = uvc_mc_register_entities(chain);
2158 if (ret < 0)
2159 dev_info(&dev->intf->dev,
2160 "Failed to register entities (%d).\n", ret);
2161 #endif
2162 }
2163
2164 return 0;
2165 }
2166
2167 /* ------------------------------------------------------------------------
2168 * USB probe, disconnect, suspend and resume
2169 */
2170
2171 static const struct uvc_device_info uvc_quirk_none = { 0 };
2172
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2173 static int uvc_probe(struct usb_interface *intf,
2174 const struct usb_device_id *id)
2175 {
2176 struct usb_device *udev = interface_to_usbdev(intf);
2177 struct uvc_device *dev;
2178 const struct uvc_device_info *info =
2179 (const struct uvc_device_info *)id->driver_info;
2180 int function;
2181 int ret;
2182
2183 /* Allocate memory for the device and initialize it. */
2184 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2185 if (dev == NULL)
2186 return -ENOMEM;
2187
2188 INIT_LIST_HEAD(&dev->entities);
2189 INIT_LIST_HEAD(&dev->chains);
2190 INIT_LIST_HEAD(&dev->streams);
2191 kref_init(&dev->ref);
2192 atomic_set(&dev->nmappings, 0);
2193
2194 dev->udev = usb_get_dev(udev);
2195 dev->intf = usb_get_intf(intf);
2196 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2197 dev->info = info ? info : &uvc_quirk_none;
2198 dev->quirks = uvc_quirks_param == -1
2199 ? dev->info->quirks : uvc_quirks_param;
2200
2201 if (id->idVendor && id->idProduct)
2202 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
2203 udev->devpath, id->idVendor, id->idProduct);
2204 else
2205 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
2206 udev->devpath);
2207
2208 if (udev->product != NULL)
2209 strscpy(dev->name, udev->product, sizeof(dev->name));
2210 else
2211 snprintf(dev->name, sizeof(dev->name),
2212 "UVC Camera (%04x:%04x)",
2213 le16_to_cpu(udev->descriptor.idVendor),
2214 le16_to_cpu(udev->descriptor.idProduct));
2215
2216 /*
2217 * Add iFunction or iInterface to names when available as additional
2218 * distinguishers between interfaces. iFunction is prioritized over
2219 * iInterface which matches Windows behavior at the point of writing.
2220 */
2221 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2222 function = intf->intf_assoc->iFunction;
2223 else
2224 function = intf->cur_altsetting->desc.iInterface;
2225 if (function != 0) {
2226 size_t len;
2227
2228 strlcat(dev->name, ": ", sizeof(dev->name));
2229 len = strlen(dev->name);
2230 usb_string(udev, function, dev->name + len,
2231 sizeof(dev->name) - len);
2232 }
2233
2234 /* Initialize the media device. */
2235 #ifdef CONFIG_MEDIA_CONTROLLER
2236 dev->mdev.dev = &intf->dev;
2237 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2238 if (udev->serial)
2239 strscpy(dev->mdev.serial, udev->serial,
2240 sizeof(dev->mdev.serial));
2241 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2242 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2243 media_device_init(&dev->mdev);
2244
2245 dev->vdev.mdev = &dev->mdev;
2246 #endif
2247
2248 /* Parse the Video Class control descriptor. */
2249 ret = uvc_parse_control(dev);
2250 if (ret < 0) {
2251 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
2252 goto error;
2253 }
2254
2255 /* Parse the associated GPIOs. */
2256 ret = uvc_gpio_parse(dev);
2257 if (ret < 0)
2258 goto error;
2259
2260 dev_info(&dev->intf->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2261 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2262 udev->product ? udev->product : "<unnamed>",
2263 le16_to_cpu(udev->descriptor.idVendor),
2264 le16_to_cpu(udev->descriptor.idProduct));
2265
2266 if (dev->quirks != dev->info->quirks) {
2267 dev_info(&dev->intf->dev,
2268 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
2269 dev->quirks);
2270 dev_info(&dev->intf->dev,
2271 "Please report required quirks to the linux-media mailing list.\n");
2272 }
2273
2274 if (dev->info->uvc_version) {
2275 dev->uvc_version = dev->info->uvc_version;
2276 dev_info(&dev->intf->dev, "Forcing UVC version to %u.%02x\n",
2277 dev->uvc_version >> 8, dev->uvc_version & 0xff);
2278 }
2279
2280 /* Register the V4L2 device. */
2281 ret = v4l2_device_register(&intf->dev, &dev->vdev);
2282 if (ret < 0)
2283 goto error;
2284
2285 /* Scan the device for video chains. */
2286 ret = uvc_scan_device(dev);
2287 if (ret < 0)
2288 goto error;
2289
2290 /* Initialize controls. */
2291 ret = uvc_ctrl_init_device(dev);
2292 if (ret < 0)
2293 goto error;
2294
2295 /* Register video device nodes. */
2296 ret = uvc_register_chains(dev);
2297 if (ret < 0)
2298 goto error;
2299
2300 #ifdef CONFIG_MEDIA_CONTROLLER
2301 /* Register the media device node */
2302 ret = media_device_register(&dev->mdev);
2303 if (ret < 0)
2304 goto error;
2305 #endif
2306 /* Save our data pointer in the interface data. */
2307 usb_set_intfdata(intf, dev);
2308
2309 /* Initialize the interrupt URB. */
2310 ret = uvc_status_init(dev);
2311 if (ret < 0) {
2312 dev_info(&dev->intf->dev,
2313 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
2314 ret);
2315 }
2316
2317 ret = uvc_gpio_init_irq(dev);
2318 if (ret < 0) {
2319 dev_err(&dev->intf->dev,
2320 "Unable to request privacy GPIO IRQ (%d)\n", ret);
2321 goto error;
2322 }
2323
2324 ret = uvc_meta_init(dev);
2325 if (ret < 0) {
2326 dev_err(&dev->intf->dev,
2327 "Error initializing the metadata formats (%d)\n", ret);
2328 goto error;
2329 }
2330
2331 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME)
2332 udev->quirks &= ~USB_QUIRK_RESET_RESUME;
2333
2334 if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND))
2335 usb_enable_autosuspend(udev);
2336
2337 uvc_dbg(dev, PROBE, "UVC device initialized\n");
2338
2339 return 0;
2340
2341 error:
2342 uvc_unregister_video(dev);
2343 kref_put(&dev->ref, uvc_delete);
2344 return ret;
2345 }
2346
uvc_disconnect(struct usb_interface * intf)2347 static void uvc_disconnect(struct usb_interface *intf)
2348 {
2349 struct uvc_device *dev = usb_get_intfdata(intf);
2350
2351 /*
2352 * Set the USB interface data to NULL. This can be done outside the
2353 * lock, as there's no other reader.
2354 */
2355 usb_set_intfdata(intf, NULL);
2356
2357 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2358 UVC_SC_VIDEOSTREAMING)
2359 return;
2360
2361 uvc_unregister_video(dev);
2362 kref_put(&dev->ref, uvc_delete);
2363 }
2364
uvc_suspend(struct usb_interface * intf,pm_message_t message)2365 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2366 {
2367 struct uvc_device *dev = usb_get_intfdata(intf);
2368 struct uvc_streaming *stream;
2369
2370 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
2371 intf->cur_altsetting->desc.bInterfaceNumber);
2372
2373 /* Controls are cached on the fly so they don't need to be saved. */
2374 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2375 UVC_SC_VIDEOCONTROL) {
2376 uvc_status_suspend(dev);
2377 return 0;
2378 }
2379
2380 list_for_each_entry(stream, &dev->streams, list) {
2381 if (stream->intf == intf)
2382 return uvc_video_suspend(stream);
2383 }
2384
2385 uvc_dbg(dev, SUSPEND,
2386 "Suspend: video streaming USB interface mismatch\n");
2387 return -EINVAL;
2388 }
2389
__uvc_resume(struct usb_interface * intf,int reset)2390 static int __uvc_resume(struct usb_interface *intf, int reset)
2391 {
2392 struct uvc_device *dev = usb_get_intfdata(intf);
2393 struct uvc_streaming *stream;
2394 int ret = 0;
2395
2396 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
2397 intf->cur_altsetting->desc.bInterfaceNumber);
2398
2399 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2400 UVC_SC_VIDEOCONTROL) {
2401 if (reset) {
2402 ret = uvc_ctrl_restore_values(dev);
2403 if (ret < 0)
2404 return ret;
2405 }
2406
2407 return uvc_status_resume(dev);
2408 }
2409
2410 list_for_each_entry(stream, &dev->streams, list) {
2411 if (stream->intf == intf) {
2412 ret = uvc_video_resume(stream, reset);
2413 if (ret < 0) {
2414 mutex_lock(&stream->queue.mutex);
2415 vb2_streamoff(&stream->queue.queue,
2416 stream->queue.queue.type);
2417 mutex_unlock(&stream->queue.mutex);
2418 }
2419 return ret;
2420 }
2421 }
2422
2423 uvc_dbg(dev, SUSPEND,
2424 "Resume: video streaming USB interface mismatch\n");
2425 return -EINVAL;
2426 }
2427
uvc_resume(struct usb_interface * intf)2428 static int uvc_resume(struct usb_interface *intf)
2429 {
2430 return __uvc_resume(intf, 0);
2431 }
2432
uvc_reset_resume(struct usb_interface * intf)2433 static int uvc_reset_resume(struct usb_interface *intf)
2434 {
2435 return __uvc_resume(intf, 1);
2436 }
2437
2438 /* ------------------------------------------------------------------------
2439 * Module parameters
2440 */
2441
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2442 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2443 {
2444 if (uvc_clock_param == CLOCK_MONOTONIC)
2445 return sprintf(buffer, "CLOCK_MONOTONIC");
2446 else
2447 return sprintf(buffer, "CLOCK_REALTIME");
2448 }
2449
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2450 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2451 {
2452 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2453 val += strlen("clock_");
2454
2455 if (strcasecmp(val, "monotonic") == 0)
2456 uvc_clock_param = CLOCK_MONOTONIC;
2457 else if (strcasecmp(val, "realtime") == 0)
2458 uvc_clock_param = CLOCK_REALTIME;
2459 else
2460 return -EINVAL;
2461
2462 return 0;
2463 }
2464
2465 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2466 &uvc_clock_param, 0644);
2467 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2468 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644);
2469 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2470
param_set_nodrop(const char * val,const struct kernel_param * kp)2471 static int param_set_nodrop(const char *val, const struct kernel_param *kp)
2472 {
2473 pr_warn_once("uvcvideo: "
2474 DEPRECATED
2475 "nodrop parameter will be eventually removed.\n");
2476 return param_set_bool(val, kp);
2477 }
2478
2479 static const struct kernel_param_ops param_ops_nodrop = {
2480 .set = param_set_nodrop,
2481 .get = param_get_uint,
2482 };
2483
2484 param_check_uint(nodrop, &uvc_no_drop_param);
2485 module_param_cb(nodrop, ¶m_ops_nodrop, &uvc_no_drop_param, 0644);
2486 __MODULE_PARM_TYPE(nodrop, "uint");
2487 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2488
2489 module_param_named(quirks, uvc_quirks_param, uint, 0644);
2490 MODULE_PARM_DESC(quirks, "Forced device quirks");
2491 module_param_named(trace, uvc_dbg_param, uint, 0644);
2492 MODULE_PARM_DESC(trace, "Trace level bitmask");
2493 module_param_named(timeout, uvc_timeout_param, uint, 0644);
2494 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2495
2496 /* ------------------------------------------------------------------------
2497 * Driver initialization and cleanup
2498 */
2499
2500 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2501 .quirks = UVC_QUIRK_PROBE_MINMAX,
2502 };
2503
2504 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2505 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2506 };
2507
2508 static const struct uvc_device_info uvc_quirk_probe_def = {
2509 .quirks = UVC_QUIRK_PROBE_DEF,
2510 };
2511
2512 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2513 .quirks = UVC_QUIRK_STREAM_NO_FID,
2514 };
2515
2516 static const struct uvc_device_info uvc_quirk_force_y8 = {
2517 .quirks = UVC_QUIRK_FORCE_Y8,
2518 };
2519
2520 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2521 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2522 {.meta_format = m}
2523
2524 /*
2525 * The Logitech cameras listed below have their interface class set to
2526 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2527 * though they are compliant.
2528 *
2529 * Sort these by vendor/product ID.
2530 */
2531 static const struct usb_device_id uvc_ids[] = {
2532 /* HP Webcam HD 2300 */
2533 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2534 | USB_DEVICE_ID_MATCH_INT_INFO,
2535 .idVendor = 0x03f0,
2536 .idProduct = 0xe207,
2537 .bInterfaceClass = USB_CLASS_VIDEO,
2538 .bInterfaceSubClass = 1,
2539 .bInterfaceProtocol = 0,
2540 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2541 /* Quanta ACER HD User Facing */
2542 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2543 | USB_DEVICE_ID_MATCH_INT_INFO,
2544 .idVendor = 0x0408,
2545 .idProduct = 0x4033,
2546 .bInterfaceClass = USB_CLASS_VIDEO,
2547 .bInterfaceSubClass = 1,
2548 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2549 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2550 .uvc_version = 0x010a,
2551 } },
2552 /* Quanta ACER HD User Facing */
2553 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2554 | USB_DEVICE_ID_MATCH_INT_INFO,
2555 .idVendor = 0x0408,
2556 .idProduct = 0x4035,
2557 .bInterfaceClass = USB_CLASS_VIDEO,
2558 .bInterfaceSubClass = 1,
2559 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2560 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2561 .uvc_version = 0x010a,
2562 } },
2563 /* LogiLink Wireless Webcam */
2564 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2565 | USB_DEVICE_ID_MATCH_INT_INFO,
2566 .idVendor = 0x0416,
2567 .idProduct = 0xa91a,
2568 .bInterfaceClass = USB_CLASS_VIDEO,
2569 .bInterfaceSubClass = 1,
2570 .bInterfaceProtocol = 0,
2571 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2572 /* Genius eFace 2025 */
2573 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2574 | USB_DEVICE_ID_MATCH_INT_INFO,
2575 .idVendor = 0x0458,
2576 .idProduct = 0x706e,
2577 .bInterfaceClass = USB_CLASS_VIDEO,
2578 .bInterfaceSubClass = 1,
2579 .bInterfaceProtocol = 0,
2580 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2581 /* Microsoft Lifecam NX-6000 */
2582 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2583 | USB_DEVICE_ID_MATCH_INT_INFO,
2584 .idVendor = 0x045e,
2585 .idProduct = 0x00f8,
2586 .bInterfaceClass = USB_CLASS_VIDEO,
2587 .bInterfaceSubClass = 1,
2588 .bInterfaceProtocol = 0,
2589 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2590 /* Microsoft Lifecam NX-3000 */
2591 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2592 | USB_DEVICE_ID_MATCH_INT_INFO,
2593 .idVendor = 0x045e,
2594 .idProduct = 0x0721,
2595 .bInterfaceClass = USB_CLASS_VIDEO,
2596 .bInterfaceSubClass = 1,
2597 .bInterfaceProtocol = 0,
2598 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2599 /* Microsoft Lifecam VX-7000 */
2600 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2601 | USB_DEVICE_ID_MATCH_INT_INFO,
2602 .idVendor = 0x045e,
2603 .idProduct = 0x0723,
2604 .bInterfaceClass = USB_CLASS_VIDEO,
2605 .bInterfaceSubClass = 1,
2606 .bInterfaceProtocol = 0,
2607 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2608 /* Logitech, Webcam C910 */
2609 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2610 | USB_DEVICE_ID_MATCH_INT_INFO,
2611 .idVendor = 0x046d,
2612 .idProduct = 0x0821,
2613 .bInterfaceClass = USB_CLASS_VIDEO,
2614 .bInterfaceSubClass = 1,
2615 .bInterfaceProtocol = 0,
2616 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2617 /* Logitech, Webcam B910 */
2618 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2619 | USB_DEVICE_ID_MATCH_INT_INFO,
2620 .idVendor = 0x046d,
2621 .idProduct = 0x0823,
2622 .bInterfaceClass = USB_CLASS_VIDEO,
2623 .bInterfaceSubClass = 1,
2624 .bInterfaceProtocol = 0,
2625 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2626 /* Logitech Quickcam Fusion */
2627 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2628 | USB_DEVICE_ID_MATCH_INT_INFO,
2629 .idVendor = 0x046d,
2630 .idProduct = 0x08c1,
2631 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2632 .bInterfaceSubClass = 1,
2633 .bInterfaceProtocol = 0 },
2634 /* Logitech Quickcam Orbit MP */
2635 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2636 | USB_DEVICE_ID_MATCH_INT_INFO,
2637 .idVendor = 0x046d,
2638 .idProduct = 0x08c2,
2639 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2640 .bInterfaceSubClass = 1,
2641 .bInterfaceProtocol = 0 },
2642 /* Logitech Quickcam Pro for Notebook */
2643 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2644 | USB_DEVICE_ID_MATCH_INT_INFO,
2645 .idVendor = 0x046d,
2646 .idProduct = 0x08c3,
2647 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2648 .bInterfaceSubClass = 1,
2649 .bInterfaceProtocol = 0 },
2650 /* Logitech Quickcam Pro 5000 */
2651 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2652 | USB_DEVICE_ID_MATCH_INT_INFO,
2653 .idVendor = 0x046d,
2654 .idProduct = 0x08c5,
2655 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2656 .bInterfaceSubClass = 1,
2657 .bInterfaceProtocol = 0 },
2658 /* Logitech Quickcam OEM Dell Notebook */
2659 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2660 | USB_DEVICE_ID_MATCH_INT_INFO,
2661 .idVendor = 0x046d,
2662 .idProduct = 0x08c6,
2663 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2664 .bInterfaceSubClass = 1,
2665 .bInterfaceProtocol = 0 },
2666 /* Logitech Quickcam OEM Cisco VT Camera II */
2667 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2668 | USB_DEVICE_ID_MATCH_INT_INFO,
2669 .idVendor = 0x046d,
2670 .idProduct = 0x08c7,
2671 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2672 .bInterfaceSubClass = 1,
2673 .bInterfaceProtocol = 0 },
2674 /* Logitech HD Pro Webcam C920 */
2675 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2676 | USB_DEVICE_ID_MATCH_INT_INFO,
2677 .idVendor = 0x046d,
2678 .idProduct = 0x082d,
2679 .bInterfaceClass = USB_CLASS_VIDEO,
2680 .bInterfaceSubClass = 1,
2681 .bInterfaceProtocol = 0,
2682 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT
2683 | UVC_QUIRK_INVALID_DEVICE_SOF) },
2684 /* Logitech HD Pro Webcam C922 */
2685 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2686 | USB_DEVICE_ID_MATCH_INT_INFO,
2687 .idVendor = 0x046d,
2688 .idProduct = 0x085c,
2689 .bInterfaceClass = USB_CLASS_VIDEO,
2690 .bInterfaceSubClass = 1,
2691 .bInterfaceProtocol = 0,
2692 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_INVALID_DEVICE_SOF) },
2693 /* Logitech Rally Bar Huddle */
2694 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2695 | USB_DEVICE_ID_MATCH_INT_INFO,
2696 .idVendor = 0x046d,
2697 .idProduct = 0x087c,
2698 .bInterfaceClass = USB_CLASS_VIDEO,
2699 .bInterfaceSubClass = 1,
2700 .bInterfaceProtocol = 0,
2701 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2702 /* Logitech Rally Bar */
2703 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2704 | USB_DEVICE_ID_MATCH_INT_INFO,
2705 .idVendor = 0x046d,
2706 .idProduct = 0x089b,
2707 .bInterfaceClass = USB_CLASS_VIDEO,
2708 .bInterfaceSubClass = 1,
2709 .bInterfaceProtocol = 0,
2710 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2711 /* Logitech Rally Bar Mini */
2712 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2713 | USB_DEVICE_ID_MATCH_INT_INFO,
2714 .idVendor = 0x046d,
2715 .idProduct = 0x08d3,
2716 .bInterfaceClass = USB_CLASS_VIDEO,
2717 .bInterfaceSubClass = 1,
2718 .bInterfaceProtocol = 0,
2719 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2720 /* Chicony CNF7129 (Asus EEE 100HE) */
2721 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2722 | USB_DEVICE_ID_MATCH_INT_INFO,
2723 .idVendor = 0x04f2,
2724 .idProduct = 0xb071,
2725 .bInterfaceClass = USB_CLASS_VIDEO,
2726 .bInterfaceSubClass = 1,
2727 .bInterfaceProtocol = 0,
2728 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2729 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2730 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2731 | USB_DEVICE_ID_MATCH_INT_INFO,
2732 .idVendor = 0x058f,
2733 .idProduct = 0x3820,
2734 .bInterfaceClass = USB_CLASS_VIDEO,
2735 .bInterfaceSubClass = 1,
2736 .bInterfaceProtocol = 0,
2737 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2738 /* Dell XPS m1530 */
2739 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2740 | USB_DEVICE_ID_MATCH_INT_INFO,
2741 .idVendor = 0x05a9,
2742 .idProduct = 0x2640,
2743 .bInterfaceClass = USB_CLASS_VIDEO,
2744 .bInterfaceSubClass = 1,
2745 .bInterfaceProtocol = 0,
2746 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2747 /* Dell SP2008WFP Monitor */
2748 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2749 | USB_DEVICE_ID_MATCH_INT_INFO,
2750 .idVendor = 0x05a9,
2751 .idProduct = 0x2641,
2752 .bInterfaceClass = USB_CLASS_VIDEO,
2753 .bInterfaceSubClass = 1,
2754 .bInterfaceProtocol = 0,
2755 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2756 /* Dell Alienware X51 */
2757 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2758 | USB_DEVICE_ID_MATCH_INT_INFO,
2759 .idVendor = 0x05a9,
2760 .idProduct = 0x2643,
2761 .bInterfaceClass = USB_CLASS_VIDEO,
2762 .bInterfaceSubClass = 1,
2763 .bInterfaceProtocol = 0,
2764 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2765 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2766 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2767 | USB_DEVICE_ID_MATCH_INT_INFO,
2768 .idVendor = 0x05a9,
2769 .idProduct = 0x264a,
2770 .bInterfaceClass = USB_CLASS_VIDEO,
2771 .bInterfaceSubClass = 1,
2772 .bInterfaceProtocol = 0,
2773 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2774 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2775 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2776 | USB_DEVICE_ID_MATCH_INT_INFO,
2777 .idVendor = 0x05a9,
2778 .idProduct = 0x7670,
2779 .bInterfaceClass = USB_CLASS_VIDEO,
2780 .bInterfaceSubClass = 1,
2781 .bInterfaceProtocol = 0,
2782 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2783 /* Apple Built-In iSight */
2784 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2785 | USB_DEVICE_ID_MATCH_INT_INFO,
2786 .idVendor = 0x05ac,
2787 .idProduct = 0x8501,
2788 .bInterfaceClass = USB_CLASS_VIDEO,
2789 .bInterfaceSubClass = 1,
2790 .bInterfaceProtocol = 0,
2791 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2792 | UVC_QUIRK_BUILTIN_ISIGHT) },
2793 /* Apple FaceTime HD Camera (Built-In) */
2794 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2795 | USB_DEVICE_ID_MATCH_INT_INFO,
2796 .idVendor = 0x05ac,
2797 .idProduct = 0x8514,
2798 .bInterfaceClass = USB_CLASS_VIDEO,
2799 .bInterfaceSubClass = 1,
2800 .bInterfaceProtocol = 0,
2801 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2802 /* Apple Built-In iSight via iBridge */
2803 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2804 | USB_DEVICE_ID_MATCH_INT_INFO,
2805 .idVendor = 0x05ac,
2806 .idProduct = 0x8600,
2807 .bInterfaceClass = USB_CLASS_VIDEO,
2808 .bInterfaceSubClass = 1,
2809 .bInterfaceProtocol = 0,
2810 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2811 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2812 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2813 | USB_DEVICE_ID_MATCH_INT_INFO,
2814 .idVendor = 0x05c8,
2815 .idProduct = 0x0403,
2816 .bInterfaceClass = USB_CLASS_VIDEO,
2817 .bInterfaceSubClass = 1,
2818 .bInterfaceProtocol = 0,
2819 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2820 /* Genesys Logic USB 2.0 PC Camera */
2821 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2822 | USB_DEVICE_ID_MATCH_INT_INFO,
2823 .idVendor = 0x05e3,
2824 .idProduct = 0x0505,
2825 .bInterfaceClass = USB_CLASS_VIDEO,
2826 .bInterfaceSubClass = 1,
2827 .bInterfaceProtocol = 0,
2828 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2829 /* Hercules Classic Silver */
2830 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2831 | USB_DEVICE_ID_MATCH_INT_INFO,
2832 .idVendor = 0x06f8,
2833 .idProduct = 0x300c,
2834 .bInterfaceClass = USB_CLASS_VIDEO,
2835 .bInterfaceSubClass = 1,
2836 .bInterfaceProtocol = 0,
2837 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2838 /* ViMicro Vega */
2839 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2840 | USB_DEVICE_ID_MATCH_INT_INFO,
2841 .idVendor = 0x0ac8,
2842 .idProduct = 0x332d,
2843 .bInterfaceClass = USB_CLASS_VIDEO,
2844 .bInterfaceSubClass = 1,
2845 .bInterfaceProtocol = 0,
2846 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2847 /* ViMicro - Minoru3D */
2848 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2849 | USB_DEVICE_ID_MATCH_INT_INFO,
2850 .idVendor = 0x0ac8,
2851 .idProduct = 0x3410,
2852 .bInterfaceClass = USB_CLASS_VIDEO,
2853 .bInterfaceSubClass = 1,
2854 .bInterfaceProtocol = 0,
2855 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2856 /* ViMicro Venus - Minoru3D */
2857 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2858 | USB_DEVICE_ID_MATCH_INT_INFO,
2859 .idVendor = 0x0ac8,
2860 .idProduct = 0x3420,
2861 .bInterfaceClass = USB_CLASS_VIDEO,
2862 .bInterfaceSubClass = 1,
2863 .bInterfaceProtocol = 0,
2864 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2865 /* Ophir Optronics - SPCAM 620U */
2866 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2867 | USB_DEVICE_ID_MATCH_INT_INFO,
2868 .idVendor = 0x0bd3,
2869 .idProduct = 0x0555,
2870 .bInterfaceClass = USB_CLASS_VIDEO,
2871 .bInterfaceSubClass = 1,
2872 .bInterfaceProtocol = 0,
2873 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2874 /* Sonix Technology Co. Ltd. - 292A IPC AR0330 */
2875 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2876 | USB_DEVICE_ID_MATCH_INT_INFO,
2877 .idVendor = 0x0c45,
2878 .idProduct = 0x6366,
2879 .bInterfaceClass = USB_CLASS_VIDEO,
2880 .bInterfaceSubClass = 1,
2881 .bInterfaceProtocol = 0,
2882 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) },
2883 /* MT6227 */
2884 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2885 | USB_DEVICE_ID_MATCH_INT_INFO,
2886 .idVendor = 0x0e8d,
2887 .idProduct = 0x0004,
2888 .bInterfaceClass = USB_CLASS_VIDEO,
2889 .bInterfaceSubClass = 1,
2890 .bInterfaceProtocol = 0,
2891 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2892 | UVC_QUIRK_PROBE_DEF) },
2893 /* IMC Networks (Medion Akoya) */
2894 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2895 | USB_DEVICE_ID_MATCH_INT_INFO,
2896 .idVendor = 0x13d3,
2897 .idProduct = 0x5103,
2898 .bInterfaceClass = USB_CLASS_VIDEO,
2899 .bInterfaceSubClass = 1,
2900 .bInterfaceProtocol = 0,
2901 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2902 /* JMicron USB2.0 XGA WebCam */
2903 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2904 | USB_DEVICE_ID_MATCH_INT_INFO,
2905 .idVendor = 0x152d,
2906 .idProduct = 0x0310,
2907 .bInterfaceClass = USB_CLASS_VIDEO,
2908 .bInterfaceSubClass = 1,
2909 .bInterfaceProtocol = 0,
2910 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2911 /* Kurokesu C1 PRO */
2912 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2913 | USB_DEVICE_ID_MATCH_INT_INFO,
2914 .idVendor = 0x16d0,
2915 .idProduct = 0x0ed1,
2916 .bInterfaceClass = USB_CLASS_VIDEO,
2917 .bInterfaceSubClass = 1,
2918 .bInterfaceProtocol = 0,
2919 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) },
2920 /* Syntek (HP Spartan) */
2921 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2922 | USB_DEVICE_ID_MATCH_INT_INFO,
2923 .idVendor = 0x174f,
2924 .idProduct = 0x5212,
2925 .bInterfaceClass = USB_CLASS_VIDEO,
2926 .bInterfaceSubClass = 1,
2927 .bInterfaceProtocol = 0,
2928 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2929 /* Syntek (Samsung Q310) */
2930 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2931 | USB_DEVICE_ID_MATCH_INT_INFO,
2932 .idVendor = 0x174f,
2933 .idProduct = 0x5931,
2934 .bInterfaceClass = USB_CLASS_VIDEO,
2935 .bInterfaceSubClass = 1,
2936 .bInterfaceProtocol = 0,
2937 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2938 /* Syntek (Packard Bell EasyNote MX52 */
2939 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2940 | USB_DEVICE_ID_MATCH_INT_INFO,
2941 .idVendor = 0x174f,
2942 .idProduct = 0x8a12,
2943 .bInterfaceClass = USB_CLASS_VIDEO,
2944 .bInterfaceSubClass = 1,
2945 .bInterfaceProtocol = 0,
2946 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2947 /* Syntek (Asus F9SG) */
2948 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2949 | USB_DEVICE_ID_MATCH_INT_INFO,
2950 .idVendor = 0x174f,
2951 .idProduct = 0x8a31,
2952 .bInterfaceClass = USB_CLASS_VIDEO,
2953 .bInterfaceSubClass = 1,
2954 .bInterfaceProtocol = 0,
2955 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2956 /* Syntek (Asus U3S) */
2957 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2958 | USB_DEVICE_ID_MATCH_INT_INFO,
2959 .idVendor = 0x174f,
2960 .idProduct = 0x8a33,
2961 .bInterfaceClass = USB_CLASS_VIDEO,
2962 .bInterfaceSubClass = 1,
2963 .bInterfaceProtocol = 0,
2964 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2965 /* Syntek (JAOtech Smart Terminal) */
2966 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2967 | USB_DEVICE_ID_MATCH_INT_INFO,
2968 .idVendor = 0x174f,
2969 .idProduct = 0x8a34,
2970 .bInterfaceClass = USB_CLASS_VIDEO,
2971 .bInterfaceSubClass = 1,
2972 .bInterfaceProtocol = 0,
2973 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2974 /* Miricle 307K */
2975 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2976 | USB_DEVICE_ID_MATCH_INT_INFO,
2977 .idVendor = 0x17dc,
2978 .idProduct = 0x0202,
2979 .bInterfaceClass = USB_CLASS_VIDEO,
2980 .bInterfaceSubClass = 1,
2981 .bInterfaceProtocol = 0,
2982 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2983 /* Lenovo Thinkpad SL400/SL500 */
2984 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2985 | USB_DEVICE_ID_MATCH_INT_INFO,
2986 .idVendor = 0x17ef,
2987 .idProduct = 0x480b,
2988 .bInterfaceClass = USB_CLASS_VIDEO,
2989 .bInterfaceSubClass = 1,
2990 .bInterfaceProtocol = 0,
2991 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2992 /* Aveo Technology USB 2.0 Camera */
2993 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2994 | USB_DEVICE_ID_MATCH_INT_INFO,
2995 .idVendor = 0x1871,
2996 .idProduct = 0x0306,
2997 .bInterfaceClass = USB_CLASS_VIDEO,
2998 .bInterfaceSubClass = 1,
2999 .bInterfaceProtocol = 0,
3000 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
3001 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
3002 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
3003 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3004 | USB_DEVICE_ID_MATCH_INT_INFO,
3005 .idVendor = 0x1871,
3006 .idProduct = 0x0516,
3007 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3008 .bInterfaceSubClass = 1,
3009 .bInterfaceProtocol = 0 },
3010 /* Ecamm Pico iMage */
3011 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3012 | USB_DEVICE_ID_MATCH_INT_INFO,
3013 .idVendor = 0x18cd,
3014 .idProduct = 0xcafe,
3015 .bInterfaceClass = USB_CLASS_VIDEO,
3016 .bInterfaceSubClass = 1,
3017 .bInterfaceProtocol = 0,
3018 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
3019 /* Manta MM-353 Plako */
3020 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3021 | USB_DEVICE_ID_MATCH_INT_INFO,
3022 .idVendor = 0x18ec,
3023 .idProduct = 0x3188,
3024 .bInterfaceClass = USB_CLASS_VIDEO,
3025 .bInterfaceSubClass = 1,
3026 .bInterfaceProtocol = 0,
3027 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3028 /* FSC WebCam V30S */
3029 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3030 | USB_DEVICE_ID_MATCH_INT_INFO,
3031 .idVendor = 0x18ec,
3032 .idProduct = 0x3288,
3033 .bInterfaceClass = USB_CLASS_VIDEO,
3034 .bInterfaceSubClass = 1,
3035 .bInterfaceProtocol = 0,
3036 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3037 /* Arkmicro unbranded */
3038 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3039 | USB_DEVICE_ID_MATCH_INT_INFO,
3040 .idVendor = 0x18ec,
3041 .idProduct = 0x3290,
3042 .bInterfaceClass = USB_CLASS_VIDEO,
3043 .bInterfaceSubClass = 1,
3044 .bInterfaceProtocol = 0,
3045 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
3046 /* The Imaging Source USB CCD cameras */
3047 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3048 | USB_DEVICE_ID_MATCH_INT_INFO,
3049 .idVendor = 0x199e,
3050 .idProduct = 0x8102,
3051 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3052 .bInterfaceSubClass = 1,
3053 .bInterfaceProtocol = 0 },
3054 /* Bodelin ProScopeHR */
3055 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3056 | USB_DEVICE_ID_MATCH_DEV_HI
3057 | USB_DEVICE_ID_MATCH_INT_INFO,
3058 .idVendor = 0x19ab,
3059 .idProduct = 0x1000,
3060 .bcdDevice_hi = 0x0126,
3061 .bInterfaceClass = USB_CLASS_VIDEO,
3062 .bInterfaceSubClass = 1,
3063 .bInterfaceProtocol = 0,
3064 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
3065 /* MSI StarCam 370i */
3066 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3067 | USB_DEVICE_ID_MATCH_INT_INFO,
3068 .idVendor = 0x1b3b,
3069 .idProduct = 0x2951,
3070 .bInterfaceClass = USB_CLASS_VIDEO,
3071 .bInterfaceSubClass = 1,
3072 .bInterfaceProtocol = 0,
3073 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3074 /* Generalplus Technology Inc. 808 Camera */
3075 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3076 | USB_DEVICE_ID_MATCH_INT_INFO,
3077 .idVendor = 0x1b3f,
3078 .idProduct = 0x2002,
3079 .bInterfaceClass = USB_CLASS_VIDEO,
3080 .bInterfaceSubClass = 1,
3081 .bInterfaceProtocol = 0,
3082 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3083 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */
3084 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3085 | USB_DEVICE_ID_MATCH_INT_INFO,
3086 .idVendor = 0x1bcf,
3087 .idProduct = 0x0b40,
3088 .bInterfaceClass = USB_CLASS_VIDEO,
3089 .bInterfaceSubClass = 1,
3090 .bInterfaceProtocol = 0,
3091 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
3092 .uvc_version = 0x010a,
3093 } },
3094 /* SiGma Micro USB Web Camera */
3095 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3096 | USB_DEVICE_ID_MATCH_INT_INFO,
3097 .idVendor = 0x1c4f,
3098 .idProduct = 0x3000,
3099 .bInterfaceClass = USB_CLASS_VIDEO,
3100 .bInterfaceSubClass = 1,
3101 .bInterfaceProtocol = 0,
3102 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
3103 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
3104 /* Actions Microelectronics Co. Display capture-UVC05 */
3105 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3106 | USB_DEVICE_ID_MATCH_INT_INFO,
3107 .idVendor = 0x1de1,
3108 .idProduct = 0xf105,
3109 .bInterfaceClass = USB_CLASS_VIDEO,
3110 .bInterfaceSubClass = 1,
3111 .bInterfaceProtocol = 0,
3112 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
3113 /* NXP Semiconductors IR VIDEO */
3114 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3115 | USB_DEVICE_ID_MATCH_INT_INFO,
3116 .idVendor = 0x1fc9,
3117 .idProduct = 0x009b,
3118 .bInterfaceClass = USB_CLASS_VIDEO,
3119 .bInterfaceSubClass = 1,
3120 .bInterfaceProtocol = 0,
3121 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3122 /* Oculus VR Positional Tracker DK2 */
3123 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3124 | USB_DEVICE_ID_MATCH_INT_INFO,
3125 .idVendor = 0x2833,
3126 .idProduct = 0x0201,
3127 .bInterfaceClass = USB_CLASS_VIDEO,
3128 .bInterfaceSubClass = 1,
3129 .bInterfaceProtocol = 0,
3130 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3131 /* Oculus VR Rift Sensor */
3132 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3133 | USB_DEVICE_ID_MATCH_INT_INFO,
3134 .idVendor = 0x2833,
3135 .idProduct = 0x0211,
3136 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3137 .bInterfaceSubClass = 1,
3138 .bInterfaceProtocol = 0,
3139 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3140 /* GEO Semiconductor GC6500 */
3141 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3142 | USB_DEVICE_ID_MATCH_INT_INFO,
3143 .idVendor = 0x29fe,
3144 .idProduct = 0x4d53,
3145 .bInterfaceClass = USB_CLASS_VIDEO,
3146 .bInterfaceSubClass = 1,
3147 .bInterfaceProtocol = 0,
3148 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3149 /* Insta360 Link */
3150 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3151 | USB_DEVICE_ID_MATCH_INT_INFO,
3152 .idVendor = 0x2e1a,
3153 .idProduct = 0x4c01,
3154 .bInterfaceClass = USB_CLASS_VIDEO,
3155 .bInterfaceSubClass = 1,
3156 .bInterfaceProtocol = 0,
3157 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
3158 /* Intel D410/ASR depth camera */
3159 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3160 | USB_DEVICE_ID_MATCH_INT_INFO,
3161 .idVendor = 0x8086,
3162 .idProduct = 0x0ad2,
3163 .bInterfaceClass = USB_CLASS_VIDEO,
3164 .bInterfaceSubClass = 1,
3165 .bInterfaceProtocol = 0,
3166 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3167 /* Intel D415/ASRC depth camera */
3168 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3169 | USB_DEVICE_ID_MATCH_INT_INFO,
3170 .idVendor = 0x8086,
3171 .idProduct = 0x0ad3,
3172 .bInterfaceClass = USB_CLASS_VIDEO,
3173 .bInterfaceSubClass = 1,
3174 .bInterfaceProtocol = 0,
3175 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3176 /* Intel D430/AWG depth camera */
3177 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3178 | USB_DEVICE_ID_MATCH_INT_INFO,
3179 .idVendor = 0x8086,
3180 .idProduct = 0x0ad4,
3181 .bInterfaceClass = USB_CLASS_VIDEO,
3182 .bInterfaceSubClass = 1,
3183 .bInterfaceProtocol = 0,
3184 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3185 /* Intel RealSense D4M */
3186 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3187 | USB_DEVICE_ID_MATCH_INT_INFO,
3188 .idVendor = 0x8086,
3189 .idProduct = 0x0b03,
3190 .bInterfaceClass = USB_CLASS_VIDEO,
3191 .bInterfaceSubClass = 1,
3192 .bInterfaceProtocol = 0,
3193 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3194 /* Intel D435/AWGC depth camera */
3195 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3196 | USB_DEVICE_ID_MATCH_INT_INFO,
3197 .idVendor = 0x8086,
3198 .idProduct = 0x0b07,
3199 .bInterfaceClass = USB_CLASS_VIDEO,
3200 .bInterfaceSubClass = 1,
3201 .bInterfaceProtocol = 0,
3202 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3203 /* Intel D435i depth camera */
3204 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3205 | USB_DEVICE_ID_MATCH_INT_INFO,
3206 .idVendor = 0x8086,
3207 .idProduct = 0x0b3a,
3208 .bInterfaceClass = USB_CLASS_VIDEO,
3209 .bInterfaceSubClass = 1,
3210 .bInterfaceProtocol = 0,
3211 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3212 /* Intel D405 Depth Camera */
3213 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3214 | USB_DEVICE_ID_MATCH_INT_INFO,
3215 .idVendor = 0x8086,
3216 .idProduct = 0x0b5b,
3217 .bInterfaceClass = USB_CLASS_VIDEO,
3218 .bInterfaceSubClass = 1,
3219 .bInterfaceProtocol = 0,
3220 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3221 /* Intel D455 Depth Camera */
3222 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3223 | USB_DEVICE_ID_MATCH_INT_INFO,
3224 .idVendor = 0x8086,
3225 .idProduct = 0x0b5c,
3226 .bInterfaceClass = USB_CLASS_VIDEO,
3227 .bInterfaceSubClass = 1,
3228 .bInterfaceProtocol = 0,
3229 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3230 /* Intel D421 Depth Module */
3231 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3232 | USB_DEVICE_ID_MATCH_INT_INFO,
3233 .idVendor = 0x8086,
3234 .idProduct = 0x1155,
3235 .bInterfaceClass = USB_CLASS_VIDEO,
3236 .bInterfaceSubClass = 1,
3237 .bInterfaceProtocol = 0,
3238 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3239 /* Generic USB Video Class */
3240 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3241 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3242 {}
3243 };
3244
3245 MODULE_DEVICE_TABLE(usb, uvc_ids);
3246
3247 static struct usb_driver uvc_driver = {
3248 .name = "uvcvideo",
3249 .probe = uvc_probe,
3250 .disconnect = uvc_disconnect,
3251 .suspend = uvc_suspend,
3252 .resume = uvc_resume,
3253 .reset_resume = uvc_reset_resume,
3254 .id_table = uvc_ids,
3255 .supports_autosuspend = 1,
3256 };
3257
uvc_init(void)3258 static int __init uvc_init(void)
3259 {
3260 int ret;
3261
3262 uvc_debugfs_init();
3263
3264 ret = usb_register(&uvc_driver);
3265 if (ret < 0) {
3266 uvc_debugfs_cleanup();
3267 return ret;
3268 }
3269
3270 return 0;
3271 }
3272
uvc_cleanup(void)3273 static void __exit uvc_cleanup(void)
3274 {
3275 usb_deregister(&uvc_driver);
3276 uvc_debugfs_cleanup();
3277 }
3278
3279 module_init(uvc_init);
3280 module_exit(uvc_cleanup);
3281
3282 MODULE_AUTHOR(DRIVER_AUTHOR);
3283 MODULE_DESCRIPTION(DRIVER_DESC);
3284 MODULE_LICENSE("GPL");
3285 MODULE_VERSION(DRIVER_VERSION);
3286
3287