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;
36 static unsigned int uvc_quirks_param = -1;
37 unsigned int uvc_dbg_param;
38 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
39
40 /* ------------------------------------------------------------------------
41 * Utility functions
42 */
43
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)44 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
45 u8 epaddr)
46 {
47 struct usb_host_endpoint *ep;
48 unsigned int i;
49
50 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
51 ep = &alts->endpoint[i];
52 if (ep->desc.bEndpointAddress == epaddr)
53 return ep;
54 }
55
56 return NULL;
57 }
58
uvc_colorspace(const u8 primaries)59 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
60 {
61 static const enum v4l2_colorspace colorprimaries[] = {
62 V4L2_COLORSPACE_SRGB, /* Unspecified */
63 V4L2_COLORSPACE_SRGB,
64 V4L2_COLORSPACE_470_SYSTEM_M,
65 V4L2_COLORSPACE_470_SYSTEM_BG,
66 V4L2_COLORSPACE_SMPTE170M,
67 V4L2_COLORSPACE_SMPTE240M,
68 };
69
70 if (primaries < ARRAY_SIZE(colorprimaries))
71 return colorprimaries[primaries];
72
73 return V4L2_COLORSPACE_SRGB; /* Reserved */
74 }
75
uvc_xfer_func(const u8 transfer_characteristics)76 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
77 {
78 /*
79 * V4L2 does not currently have definitions for all possible values of
80 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
81 * values, the mapping below should be updated.
82 *
83 * Substitutions are taken from the mapping given for
84 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
85 */
86 static const enum v4l2_xfer_func xfer_funcs[] = {
87 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
88 V4L2_XFER_FUNC_709,
89 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
90 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
91 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
92 V4L2_XFER_FUNC_SMPTE240M,
93 V4L2_XFER_FUNC_NONE,
94 V4L2_XFER_FUNC_SRGB,
95 };
96
97 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
98 return xfer_funcs[transfer_characteristics];
99
100 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
101 }
102
uvc_ycbcr_enc(const u8 matrix_coefficients)103 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
104 {
105 /*
106 * V4L2 does not currently have definitions for all possible values of
107 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
108 * values, the mapping below should be updated.
109 *
110 * Substitutions are taken from the mapping given for
111 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
112 *
113 * FCC is assumed to be close enough to 601.
114 */
115 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
116 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
117 V4L2_YCBCR_ENC_709,
118 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
119 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
120 V4L2_YCBCR_ENC_601,
121 V4L2_YCBCR_ENC_SMPTE240M,
122 };
123
124 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
125 return ycbcr_encs[matrix_coefficients];
126
127 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
128 }
129
130 /* ------------------------------------------------------------------------
131 * Terminal and unit management
132 */
133
uvc_entity_by_id(struct uvc_device * dev,int id)134 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
135 {
136 struct uvc_entity *entity;
137
138 if (id == UVC_INVALID_ENTITY_ID)
139 return NULL;
140
141 list_for_each_entry(entity, &dev->entities, list) {
142 if (entity->id == id)
143 return entity;
144 }
145
146 return NULL;
147 }
148
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)149 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
150 int id, struct uvc_entity *entity)
151 {
152 unsigned int i;
153
154 if (entity == NULL)
155 entity = list_entry(&dev->entities, struct uvc_entity, list);
156
157 list_for_each_entry_continue(entity, &dev->entities, list) {
158 for (i = 0; i < entity->bNrInPins; ++i)
159 if (entity->baSourceID[i] == id)
160 return entity;
161 }
162
163 return NULL;
164 }
165
uvc_stream_by_id(struct uvc_device * dev,int id)166 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
167 {
168 struct uvc_streaming *stream;
169
170 list_for_each_entry(stream, &dev->streams, list) {
171 if (stream->header.bTerminalLink == id)
172 return stream;
173 }
174
175 return NULL;
176 }
177
178 /* ------------------------------------------------------------------------
179 * Streaming Object Management
180 */
181
uvc_stream_delete(struct uvc_streaming * stream)182 static void uvc_stream_delete(struct uvc_streaming *stream)
183 {
184 if (stream->async_wq)
185 destroy_workqueue(stream->async_wq);
186
187 mutex_destroy(&stream->mutex);
188
189 usb_put_intf(stream->intf);
190
191 kfree(stream->formats);
192 kfree(stream->header.bmaControls);
193 kfree(stream);
194 }
195
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)196 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
197 struct usb_interface *intf)
198 {
199 struct uvc_streaming *stream;
200
201 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
202 if (stream == NULL)
203 return NULL;
204
205 mutex_init(&stream->mutex);
206
207 stream->dev = dev;
208 stream->intf = usb_get_intf(intf);
209 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
210
211 /* Allocate a stream specific work queue for asynchronous tasks. */
212 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
213 0);
214 if (!stream->async_wq) {
215 uvc_stream_delete(stream);
216 return NULL;
217 }
218
219 return stream;
220 }
221
222 /* ------------------------------------------------------------------------
223 * Descriptors parsing
224 */
225
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)226 static int uvc_parse_format(struct uvc_device *dev,
227 struct uvc_streaming *streaming, struct uvc_format *format,
228 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer,
229 int buflen)
230 {
231 struct usb_interface *intf = streaming->intf;
232 struct usb_host_interface *alts = intf->cur_altsetting;
233 const struct uvc_format_desc *fmtdesc;
234 struct uvc_frame *frame;
235 const unsigned char *start = buffer;
236 unsigned int width_multiplier = 1;
237 unsigned int interval;
238 unsigned int i, n;
239 u8 ftype;
240
241 if (buflen < 4)
242 return -EINVAL;
243
244 format->type = buffer[2];
245 format->index = buffer[3];
246 format->frames = frames;
247
248 switch (buffer[2]) {
249 case UVC_VS_FORMAT_UNCOMPRESSED:
250 case UVC_VS_FORMAT_FRAME_BASED:
251 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
252 if (buflen < n) {
253 uvc_dbg(dev, DESCR,
254 "device %d videostreaming interface %d FORMAT error\n",
255 dev->udev->devnum,
256 alts->desc.bInterfaceNumber);
257 return -EINVAL;
258 }
259
260 /* Find the format descriptor from its GUID. */
261 fmtdesc = uvc_format_by_guid(&buffer[5]);
262
263 if (!fmtdesc) {
264 /*
265 * Unknown video formats are not fatal errors, the
266 * caller will skip this descriptor.
267 */
268 dev_info(&streaming->intf->dev,
269 "Unknown video format %pUl\n", &buffer[5]);
270 return 0;
271 }
272
273 format->fcc = fmtdesc->fcc;
274 format->bpp = buffer[21];
275
276 /*
277 * Some devices report a format that doesn't match what they
278 * really send.
279 */
280 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
281 if (format->fcc == V4L2_PIX_FMT_YUYV) {
282 format->fcc = V4L2_PIX_FMT_GREY;
283 format->bpp = 8;
284 width_multiplier = 2;
285 }
286 }
287
288 /* Some devices report bpp that doesn't match the format. */
289 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
290 const struct v4l2_format_info *info =
291 v4l2_format_info(format->fcc);
292
293 if (info) {
294 unsigned int div = info->hdiv * info->vdiv;
295
296 n = info->bpp[0] * div;
297 for (i = 1; i < info->comp_planes; i++)
298 n += info->bpp[i];
299
300 format->bpp = DIV_ROUND_UP(8 * n, div);
301 }
302 }
303
304 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
305 ftype = UVC_VS_FRAME_UNCOMPRESSED;
306 } else {
307 ftype = UVC_VS_FRAME_FRAME_BASED;
308 if (buffer[27])
309 format->flags = UVC_FMT_FLAG_COMPRESSED;
310 }
311 break;
312
313 case UVC_VS_FORMAT_MJPEG:
314 if (buflen < 11) {
315 uvc_dbg(dev, DESCR,
316 "device %d videostreaming interface %d FORMAT error\n",
317 dev->udev->devnum,
318 alts->desc.bInterfaceNumber);
319 return -EINVAL;
320 }
321
322 format->fcc = V4L2_PIX_FMT_MJPEG;
323 format->flags = UVC_FMT_FLAG_COMPRESSED;
324 format->bpp = 0;
325 ftype = UVC_VS_FRAME_MJPEG;
326 break;
327
328 case UVC_VS_FORMAT_DV:
329 if (buflen < 9) {
330 uvc_dbg(dev, DESCR,
331 "device %d videostreaming interface %d FORMAT error\n",
332 dev->udev->devnum,
333 alts->desc.bInterfaceNumber);
334 return -EINVAL;
335 }
336
337 if ((buffer[8] & 0x7f) > 2) {
338 uvc_dbg(dev, DESCR,
339 "device %d videostreaming interface %d: unknown DV format %u\n",
340 dev->udev->devnum,
341 alts->desc.bInterfaceNumber, buffer[8]);
342 return -EINVAL;
343 }
344
345 format->fcc = V4L2_PIX_FMT_DV;
346 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
347 format->bpp = 0;
348 ftype = 0;
349
350 /* Create a dummy frame descriptor. */
351 frame = &frames[0];
352 memset(frame, 0, sizeof(*frame));
353 frame->bFrameIntervalType = 1;
354 frame->dwDefaultFrameInterval = 1;
355 frame->dwFrameInterval = *intervals;
356 *(*intervals)++ = 1;
357 format->nframes = 1;
358 break;
359
360 case UVC_VS_FORMAT_MPEG2TS:
361 case UVC_VS_FORMAT_STREAM_BASED:
362 /* Not supported yet. */
363 default:
364 uvc_dbg(dev, DESCR,
365 "device %d videostreaming interface %d unsupported format %u\n",
366 dev->udev->devnum, alts->desc.bInterfaceNumber,
367 buffer[2]);
368 return -EINVAL;
369 }
370
371 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc);
372
373 buflen -= buffer[0];
374 buffer += buffer[0];
375
376 /*
377 * Parse the frame descriptors. Only uncompressed, MJPEG and frame
378 * based formats have frame descriptors.
379 */
380 while (ftype && buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
381 buffer[2] == ftype) {
382 unsigned int maxIntervalIndex;
383
384 frame = &frames[format->nframes];
385 if (ftype != UVC_VS_FRAME_FRAME_BASED)
386 n = buflen > 25 ? buffer[25] : 0;
387 else
388 n = buflen > 21 ? buffer[21] : 0;
389
390 n = n ? n : 3;
391
392 if (buflen < 26 + 4*n) {
393 uvc_dbg(dev, DESCR,
394 "device %d videostreaming interface %d FRAME error\n",
395 dev->udev->devnum,
396 alts->desc.bInterfaceNumber);
397 return -EINVAL;
398 }
399
400 frame->bFrameIndex = buffer[3];
401 frame->bmCapabilities = buffer[4];
402 frame->wWidth = get_unaligned_le16(&buffer[5])
403 * width_multiplier;
404 frame->wHeight = get_unaligned_le16(&buffer[7]);
405 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
406 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
407 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
408 frame->dwMaxVideoFrameBufferSize =
409 get_unaligned_le32(&buffer[17]);
410 frame->dwDefaultFrameInterval =
411 get_unaligned_le32(&buffer[21]);
412 frame->bFrameIntervalType = buffer[25];
413 } else {
414 frame->dwMaxVideoFrameBufferSize = 0;
415 frame->dwDefaultFrameInterval =
416 get_unaligned_le32(&buffer[17]);
417 frame->bFrameIntervalType = buffer[21];
418 }
419
420 /*
421 * Copy the frame intervals.
422 *
423 * Some bogus devices report dwMinFrameInterval equal to
424 * dwMaxFrameInterval and have dwFrameIntervalStep set to
425 * zero. Setting all null intervals to 1 fixes the problem and
426 * some other divisions by zero that could happen.
427 */
428 frame->dwFrameInterval = *intervals;
429
430 for (i = 0; i < n; ++i) {
431 interval = get_unaligned_le32(&buffer[26+4*i]);
432 (*intervals)[i] = interval ? interval : 1;
433 }
434
435 /*
436 * Apply more fixes, quirks and workarounds to handle incorrect
437 * or broken descriptors.
438 */
439
440 /*
441 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize
442 * completely. Observed behaviours range from setting the
443 * value to 1.1x the actual frame size to hardwiring the
444 * 16 low bits to 0. This results in a higher than necessary
445 * memory usage as well as a wrong image size information. For
446 * uncompressed formats this can be fixed by computing the
447 * value from the frame size.
448 */
449 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
450 frame->dwMaxVideoFrameBufferSize = format->bpp
451 * frame->wWidth * frame->wHeight / 8;
452
453 /*
454 * Clamp the default frame interval to the boundaries. A zero
455 * bFrameIntervalType value indicates a continuous frame
456 * interval range, with dwFrameInterval[0] storing the minimum
457 * value and dwFrameInterval[1] storing the maximum value.
458 */
459 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1;
460 frame->dwDefaultFrameInterval =
461 clamp(frame->dwDefaultFrameInterval,
462 frame->dwFrameInterval[0],
463 frame->dwFrameInterval[maxIntervalIndex]);
464
465 /*
466 * Some devices report frame intervals that are not functional.
467 * If the corresponding quirk is set, restrict operation to the
468 * first interval only.
469 */
470 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
471 frame->bFrameIntervalType = 1;
472 (*intervals)[0] = frame->dwDefaultFrameInterval;
473 }
474
475 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
476 frame->wWidth, frame->wHeight,
477 10000000 / frame->dwDefaultFrameInterval,
478 (100000000 / frame->dwDefaultFrameInterval) % 10);
479
480 format->nframes++;
481 *intervals += n;
482
483 buflen -= buffer[0];
484 buffer += buffer[0];
485 }
486
487 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
488 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
489 buflen -= buffer[0];
490 buffer += buffer[0];
491 }
492
493 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
494 buffer[2] == UVC_VS_COLORFORMAT) {
495 if (buflen < 6) {
496 uvc_dbg(dev, DESCR,
497 "device %d videostreaming interface %d COLORFORMAT error\n",
498 dev->udev->devnum,
499 alts->desc.bInterfaceNumber);
500 return -EINVAL;
501 }
502
503 format->colorspace = uvc_colorspace(buffer[3]);
504 format->xfer_func = uvc_xfer_func(buffer[4]);
505 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
506
507 buflen -= buffer[0];
508 buffer += buffer[0];
509 } else {
510 format->colorspace = V4L2_COLORSPACE_SRGB;
511 }
512
513 return buffer - start;
514 }
515
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)516 static int uvc_parse_streaming(struct uvc_device *dev,
517 struct usb_interface *intf)
518 {
519 struct uvc_streaming *streaming = NULL;
520 struct uvc_format *format;
521 struct uvc_frame *frame;
522 struct usb_host_interface *alts = &intf->altsetting[0];
523 const unsigned char *_buffer, *buffer = alts->extra;
524 int _buflen, buflen = alts->extralen;
525 unsigned int nformats = 0, nframes = 0, nintervals = 0;
526 unsigned int size, i, n, p;
527 u32 *interval;
528 u16 psize;
529 int ret = -EINVAL;
530
531 if (intf->cur_altsetting->desc.bInterfaceSubClass
532 != UVC_SC_VIDEOSTREAMING) {
533 uvc_dbg(dev, DESCR,
534 "device %d interface %d isn't a video streaming interface\n",
535 dev->udev->devnum,
536 intf->altsetting[0].desc.bInterfaceNumber);
537 return -EINVAL;
538 }
539
540 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
541 uvc_dbg(dev, DESCR,
542 "device %d interface %d is already claimed\n",
543 dev->udev->devnum,
544 intf->altsetting[0].desc.bInterfaceNumber);
545 return -EINVAL;
546 }
547
548 streaming = uvc_stream_new(dev, intf);
549 if (streaming == NULL) {
550 usb_driver_release_interface(&uvc_driver.driver, intf);
551 return -ENOMEM;
552 }
553
554 /*
555 * The Pico iMage webcam has its class-specific interface descriptors
556 * after the endpoint descriptors.
557 */
558 if (buflen == 0) {
559 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
560 struct usb_host_endpoint *ep = &alts->endpoint[i];
561
562 if (ep->extralen == 0)
563 continue;
564
565 if (ep->extralen > 2 &&
566 ep->extra[1] == USB_DT_CS_INTERFACE) {
567 uvc_dbg(dev, DESCR,
568 "trying extra data from endpoint %u\n",
569 i);
570 buffer = alts->endpoint[i].extra;
571 buflen = alts->endpoint[i].extralen;
572 break;
573 }
574 }
575 }
576
577 /* Skip the standard interface descriptors. */
578 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
579 buflen -= buffer[0];
580 buffer += buffer[0];
581 }
582
583 if (buflen <= 2) {
584 uvc_dbg(dev, DESCR,
585 "no class-specific streaming interface descriptors found\n");
586 goto error;
587 }
588
589 /* Parse the header descriptor. */
590 switch (buffer[2]) {
591 case UVC_VS_OUTPUT_HEADER:
592 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
593 size = 9;
594 break;
595
596 case UVC_VS_INPUT_HEADER:
597 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
598 size = 13;
599 break;
600
601 default:
602 uvc_dbg(dev, DESCR,
603 "device %d videostreaming interface %d HEADER descriptor not found\n",
604 dev->udev->devnum, alts->desc.bInterfaceNumber);
605 goto error;
606 }
607
608 p = buflen >= 4 ? buffer[3] : 0;
609 n = buflen >= size ? buffer[size-1] : 0;
610
611 if (buflen < size + p*n) {
612 uvc_dbg(dev, DESCR,
613 "device %d videostreaming interface %d HEADER descriptor is invalid\n",
614 dev->udev->devnum, alts->desc.bInterfaceNumber);
615 goto error;
616 }
617
618 streaming->header.bNumFormats = p;
619 streaming->header.bEndpointAddress = buffer[6];
620 if (buffer[2] == UVC_VS_INPUT_HEADER) {
621 streaming->header.bmInfo = buffer[7];
622 streaming->header.bTerminalLink = buffer[8];
623 streaming->header.bStillCaptureMethod = buffer[9];
624 streaming->header.bTriggerSupport = buffer[10];
625 streaming->header.bTriggerUsage = buffer[11];
626 } else {
627 streaming->header.bTerminalLink = buffer[7];
628 }
629 streaming->header.bControlSize = n;
630
631 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
632 GFP_KERNEL);
633 if (streaming->header.bmaControls == NULL) {
634 ret = -ENOMEM;
635 goto error;
636 }
637
638 buflen -= buffer[0];
639 buffer += buffer[0];
640
641 _buffer = buffer;
642 _buflen = buflen;
643
644 /* Count the format and frame descriptors. */
645 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
646 switch (_buffer[2]) {
647 case UVC_VS_FORMAT_UNCOMPRESSED:
648 case UVC_VS_FORMAT_MJPEG:
649 case UVC_VS_FORMAT_FRAME_BASED:
650 nformats++;
651 break;
652
653 case UVC_VS_FORMAT_DV:
654 /*
655 * DV format has no frame descriptor. We will create a
656 * dummy frame descriptor with a dummy frame interval.
657 */
658 nformats++;
659 nframes++;
660 nintervals++;
661 break;
662
663 case UVC_VS_FORMAT_MPEG2TS:
664 case UVC_VS_FORMAT_STREAM_BASED:
665 uvc_dbg(dev, DESCR,
666 "device %d videostreaming interface %d FORMAT %u is not supported\n",
667 dev->udev->devnum,
668 alts->desc.bInterfaceNumber, _buffer[2]);
669 break;
670
671 case UVC_VS_FRAME_UNCOMPRESSED:
672 case UVC_VS_FRAME_MJPEG:
673 nframes++;
674 if (_buflen > 25)
675 nintervals += _buffer[25] ? _buffer[25] : 3;
676 break;
677
678 case UVC_VS_FRAME_FRAME_BASED:
679 nframes++;
680 if (_buflen > 21)
681 nintervals += _buffer[21] ? _buffer[21] : 3;
682 break;
683 }
684
685 _buflen -= _buffer[0];
686 _buffer += _buffer[0];
687 }
688
689 if (nformats == 0) {
690 uvc_dbg(dev, DESCR,
691 "device %d videostreaming interface %d has no supported formats defined\n",
692 dev->udev->devnum, alts->desc.bInterfaceNumber);
693 goto error;
694 }
695
696 /*
697 * Allocate memory for the formats, the frames and the intervals,
698 * plus any required padding to guarantee that everything has the
699 * correct alignment.
700 */
701 size = nformats * sizeof(*format);
702 size = ALIGN(size, __alignof__(*frame)) + nframes * sizeof(*frame);
703 size = ALIGN(size, __alignof__(*interval))
704 + nintervals * sizeof(*interval);
705
706 format = kzalloc(size, GFP_KERNEL);
707 if (!format) {
708 ret = -ENOMEM;
709 goto error;
710 }
711
712 frame = (void *)format + nformats * sizeof(*format);
713 frame = PTR_ALIGN(frame, __alignof__(*frame));
714 interval = (void *)frame + nframes * sizeof(*frame);
715 interval = PTR_ALIGN(interval, __alignof__(*interval));
716
717 streaming->formats = format;
718 streaming->nformats = 0;
719
720 /* Parse the format descriptors. */
721 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
722 switch (buffer[2]) {
723 case UVC_VS_FORMAT_UNCOMPRESSED:
724 case UVC_VS_FORMAT_MJPEG:
725 case UVC_VS_FORMAT_DV:
726 case UVC_VS_FORMAT_FRAME_BASED:
727 ret = uvc_parse_format(dev, streaming, format, frame,
728 &interval, buffer, buflen);
729 if (ret < 0)
730 goto error;
731 if (!ret)
732 break;
733
734 streaming->nformats++;
735 frame += format->nframes;
736 format++;
737
738 buflen -= ret;
739 buffer += ret;
740 continue;
741
742 default:
743 break;
744 }
745
746 buflen -= buffer[0];
747 buffer += buffer[0];
748 }
749
750 if (buflen)
751 uvc_dbg(dev, DESCR,
752 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
753 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
754
755 /* Parse the alternate settings to find the maximum bandwidth. */
756 for (i = 0; i < intf->num_altsetting; ++i) {
757 struct usb_host_endpoint *ep;
758
759 alts = &intf->altsetting[i];
760 ep = uvc_find_endpoint(alts,
761 streaming->header.bEndpointAddress);
762 if (ep == NULL)
763 continue;
764 psize = uvc_endpoint_max_bpi(dev->udev, ep);
765 if (psize > streaming->maxpsize)
766 streaming->maxpsize = psize;
767 }
768
769 list_add_tail(&streaming->list, &dev->streams);
770 return 0;
771
772 error:
773 usb_driver_release_interface(&uvc_driver.driver, intf);
774 uvc_stream_delete(streaming);
775 return ret;
776 }
777
778 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
779 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER;
780 static const u8 uvc_media_transport_input_guid[16] =
781 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
782 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
783
uvc_alloc_new_entity(struct uvc_device * dev,u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)784 static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type,
785 u16 id, unsigned int num_pads,
786 unsigned int extra_size)
787 {
788 struct uvc_entity *entity;
789 unsigned int num_inputs;
790 unsigned int size;
791 unsigned int i;
792
793 /* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */
794 if (id == 0) {
795 dev_err(&dev->intf->dev, "Found Unit with invalid ID 0\n");
796 id = UVC_INVALID_ENTITY_ID;
797 }
798
799 /* Per UVC 1.1+ spec 3.7.2, the ID is unique. */
800 if (uvc_entity_by_id(dev, id)) {
801 dev_err(&dev->intf->dev, "Found multiple Units with ID %u\n", id);
802 id = UVC_INVALID_ENTITY_ID;
803 }
804
805 extra_size = roundup(extra_size, sizeof(*entity->pads));
806 if (num_pads)
807 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
808 else
809 num_inputs = 0;
810 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
811 + num_inputs;
812 entity = kzalloc(size, GFP_KERNEL);
813 if (entity == NULL)
814 return ERR_PTR(-ENOMEM);
815
816 entity->id = id;
817 entity->type = type;
818
819 /*
820 * Set the GUID for standard entity types. For extension units, the GUID
821 * is initialized by the caller.
822 */
823 switch (type) {
824 case UVC_EXT_GPIO_UNIT:
825 memcpy(entity->guid, uvc_gpio_guid, 16);
826 break;
827 case UVC_ITT_CAMERA:
828 memcpy(entity->guid, uvc_camera_guid, 16);
829 break;
830 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
831 memcpy(entity->guid, uvc_media_transport_input_guid, 16);
832 break;
833 case UVC_VC_PROCESSING_UNIT:
834 memcpy(entity->guid, uvc_processing_guid, 16);
835 break;
836 }
837
838 entity->num_links = 0;
839 entity->num_pads = num_pads;
840 entity->pads = ((void *)(entity + 1)) + extra_size;
841
842 for (i = 0; i < num_inputs; ++i)
843 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
844 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
845 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
846
847 entity->bNrInPins = num_inputs;
848 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
849
850 return entity;
851 }
852
uvc_entity_set_name(struct uvc_device * dev,struct uvc_entity * entity,const char * type_name,u8 string_id)853 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity,
854 const char *type_name, u8 string_id)
855 {
856 int ret;
857
858 /*
859 * First attempt to read the entity name from the device. If the entity
860 * has no associated string, or if reading the string fails (most
861 * likely due to a buggy firmware), fall back to default names based on
862 * the entity type.
863 */
864 if (string_id) {
865 ret = usb_string(dev->udev, string_id, entity->name,
866 sizeof(entity->name));
867 if (!ret)
868 return;
869 }
870
871 sprintf(entity->name, "%s %u", type_name, entity->id);
872 }
873
874 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)875 static int uvc_parse_vendor_control(struct uvc_device *dev,
876 const unsigned char *buffer, int buflen)
877 {
878 struct usb_device *udev = dev->udev;
879 struct usb_host_interface *alts = dev->intf->cur_altsetting;
880 struct uvc_entity *unit;
881 unsigned int n, p;
882 int handled = 0;
883
884 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
885 case 0x046d: /* Logitech */
886 if (buffer[1] != 0x41 || buffer[2] != 0x01)
887 break;
888
889 /*
890 * Logitech implements several vendor specific functions
891 * through vendor specific extension units (LXU).
892 *
893 * The LXU descriptors are similar to XU descriptors
894 * (see "USB Device Video Class for Video Devices", section
895 * 3.7.2.6 "Extension Unit Descriptor") with the following
896 * differences:
897 *
898 * ----------------------------------------------------------
899 * 0 bLength 1 Number
900 * Size of this descriptor, in bytes: 24+p+n*2
901 * ----------------------------------------------------------
902 * 23+p+n bmControlsType N Bitmap
903 * Individual bits in the set are defined:
904 * 0: Absolute
905 * 1: Relative
906 *
907 * This bitset is mapped exactly the same as bmControls.
908 * ----------------------------------------------------------
909 * 23+p+n*2 bReserved 1 Boolean
910 * ----------------------------------------------------------
911 * 24+p+n*2 iExtension 1 Index
912 * Index of a string descriptor that describes this
913 * extension unit.
914 * ----------------------------------------------------------
915 */
916 p = buflen >= 22 ? buffer[21] : 0;
917 n = buflen >= 25 + p ? buffer[22+p] : 0;
918
919 if (buflen < 25 + p + 2*n) {
920 uvc_dbg(dev, DESCR,
921 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
922 udev->devnum, alts->desc.bInterfaceNumber);
923 break;
924 }
925
926 unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT,
927 buffer[3], p + 1, 2 * n);
928 if (IS_ERR(unit))
929 return PTR_ERR(unit);
930
931 memcpy(unit->guid, &buffer[4], 16);
932 unit->extension.bNumControls = buffer[20];
933 memcpy(unit->baSourceID, &buffer[22], p);
934 unit->extension.bControlSize = buffer[22+p];
935 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
936 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
937 + n;
938 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
939
940 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]);
941
942 list_add_tail(&unit->list, &dev->entities);
943 handled = 1;
944 break;
945 }
946
947 return handled;
948 }
949
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)950 static int uvc_parse_standard_control(struct uvc_device *dev,
951 const unsigned char *buffer, int buflen)
952 {
953 struct usb_device *udev = dev->udev;
954 struct uvc_entity *unit, *term;
955 struct usb_interface *intf;
956 struct usb_host_interface *alts = dev->intf->cur_altsetting;
957 unsigned int i, n, p, len;
958 const char *type_name;
959 u16 type;
960
961 switch (buffer[2]) {
962 case UVC_VC_HEADER:
963 n = buflen >= 12 ? buffer[11] : 0;
964
965 if (buflen < 12 + n) {
966 uvc_dbg(dev, DESCR,
967 "device %d videocontrol interface %d HEADER error\n",
968 udev->devnum, alts->desc.bInterfaceNumber);
969 return -EINVAL;
970 }
971
972 dev->uvc_version = get_unaligned_le16(&buffer[3]);
973 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
974
975 /* Parse all USB Video Streaming interfaces. */
976 for (i = 0; i < n; ++i) {
977 intf = usb_ifnum_to_if(udev, buffer[12+i]);
978 if (intf == NULL) {
979 uvc_dbg(dev, DESCR,
980 "device %d interface %d doesn't exists\n",
981 udev->devnum, i);
982 continue;
983 }
984
985 uvc_parse_streaming(dev, intf);
986 }
987 break;
988
989 case UVC_VC_INPUT_TERMINAL:
990 if (buflen < 8) {
991 uvc_dbg(dev, DESCR,
992 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
993 udev->devnum, alts->desc.bInterfaceNumber);
994 return -EINVAL;
995 }
996
997 /*
998 * Reject invalid terminal types that would cause issues:
999 *
1000 * - The high byte must be non-zero, otherwise it would be
1001 * confused with a unit.
1002 *
1003 * - Bit 15 must be 0, as we use it internally as a terminal
1004 * direction flag.
1005 *
1006 * Other unknown types are accepted.
1007 */
1008 type = get_unaligned_le16(&buffer[4]);
1009 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
1010 uvc_dbg(dev, DESCR,
1011 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1012 udev->devnum, alts->desc.bInterfaceNumber,
1013 buffer[3], type);
1014 return 0;
1015 }
1016
1017 n = 0;
1018 p = 0;
1019 len = 8;
1020
1021 if (type == UVC_ITT_CAMERA) {
1022 n = buflen >= 15 ? buffer[14] : 0;
1023 len = 15;
1024
1025 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1026 n = buflen >= 9 ? buffer[8] : 0;
1027 p = buflen >= 10 + n ? buffer[9+n] : 0;
1028 len = 10;
1029 }
1030
1031 if (buflen < len + n + p) {
1032 uvc_dbg(dev, DESCR,
1033 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
1034 udev->devnum, alts->desc.bInterfaceNumber);
1035 return -EINVAL;
1036 }
1037
1038 term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT,
1039 buffer[3], 1, n + p);
1040 if (IS_ERR(term))
1041 return PTR_ERR(term);
1042
1043 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1044 term->camera.bControlSize = n;
1045 term->camera.bmControls = (u8 *)term + sizeof(*term);
1046 term->camera.wObjectiveFocalLengthMin =
1047 get_unaligned_le16(&buffer[8]);
1048 term->camera.wObjectiveFocalLengthMax =
1049 get_unaligned_le16(&buffer[10]);
1050 term->camera.wOcularFocalLength =
1051 get_unaligned_le16(&buffer[12]);
1052 memcpy(term->camera.bmControls, &buffer[15], n);
1053 } else if (UVC_ENTITY_TYPE(term) ==
1054 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1055 term->media.bControlSize = n;
1056 term->media.bmControls = (u8 *)term + sizeof(*term);
1057 term->media.bTransportModeSize = p;
1058 term->media.bmTransportModes = (u8 *)term
1059 + sizeof(*term) + n;
1060 memcpy(term->media.bmControls, &buffer[9], n);
1061 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1062 }
1063
1064 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1065 type_name = "Camera";
1066 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1067 type_name = "Media";
1068 else
1069 type_name = "Input";
1070
1071 uvc_entity_set_name(dev, term, type_name, buffer[7]);
1072
1073 list_add_tail(&term->list, &dev->entities);
1074 break;
1075
1076 case UVC_VC_OUTPUT_TERMINAL:
1077 if (buflen < 9) {
1078 uvc_dbg(dev, DESCR,
1079 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
1080 udev->devnum, alts->desc.bInterfaceNumber);
1081 return -EINVAL;
1082 }
1083
1084 /*
1085 * Make sure the terminal type MSB is not null, otherwise it
1086 * could be confused with a unit.
1087 */
1088 type = get_unaligned_le16(&buffer[4]);
1089 if ((type & 0xff00) == 0) {
1090 uvc_dbg(dev, DESCR,
1091 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1092 udev->devnum, alts->desc.bInterfaceNumber,
1093 buffer[3], type);
1094 return 0;
1095 }
1096
1097 term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT,
1098 buffer[3], 1, 0);
1099 if (IS_ERR(term))
1100 return PTR_ERR(term);
1101
1102 memcpy(term->baSourceID, &buffer[7], 1);
1103
1104 uvc_entity_set_name(dev, term, "Output", buffer[8]);
1105
1106 list_add_tail(&term->list, &dev->entities);
1107 break;
1108
1109 case UVC_VC_SELECTOR_UNIT:
1110 p = buflen >= 5 ? buffer[4] : 0;
1111
1112 if (buflen < 5 || buflen < 6 + p) {
1113 uvc_dbg(dev, DESCR,
1114 "device %d videocontrol interface %d SELECTOR_UNIT error\n",
1115 udev->devnum, alts->desc.bInterfaceNumber);
1116 return -EINVAL;
1117 }
1118
1119 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
1120 p + 1, 0);
1121 if (IS_ERR(unit))
1122 return PTR_ERR(unit);
1123
1124 memcpy(unit->baSourceID, &buffer[5], p);
1125
1126 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]);
1127
1128 list_add_tail(&unit->list, &dev->entities);
1129 break;
1130
1131 case UVC_VC_PROCESSING_UNIT:
1132 n = buflen >= 8 ? buffer[7] : 0;
1133 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1134
1135 if (buflen < p + n) {
1136 uvc_dbg(dev, DESCR,
1137 "device %d videocontrol interface %d PROCESSING_UNIT error\n",
1138 udev->devnum, alts->desc.bInterfaceNumber);
1139 return -EINVAL;
1140 }
1141
1142 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n);
1143 if (IS_ERR(unit))
1144 return PTR_ERR(unit);
1145
1146 memcpy(unit->baSourceID, &buffer[4], 1);
1147 unit->processing.wMaxMultiplier =
1148 get_unaligned_le16(&buffer[5]);
1149 unit->processing.bControlSize = buffer[7];
1150 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1151 memcpy(unit->processing.bmControls, &buffer[8], n);
1152 if (dev->uvc_version >= 0x0110)
1153 unit->processing.bmVideoStandards = buffer[9+n];
1154
1155 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]);
1156
1157 list_add_tail(&unit->list, &dev->entities);
1158 break;
1159
1160 case UVC_VC_EXTENSION_UNIT:
1161 p = buflen >= 22 ? buffer[21] : 0;
1162 n = buflen >= 24 + p ? buffer[22+p] : 0;
1163
1164 if (buflen < 24 + p + n) {
1165 uvc_dbg(dev, DESCR,
1166 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
1167 udev->devnum, alts->desc.bInterfaceNumber);
1168 return -EINVAL;
1169 }
1170
1171 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
1172 p + 1, n);
1173 if (IS_ERR(unit))
1174 return PTR_ERR(unit);
1175
1176 memcpy(unit->guid, &buffer[4], 16);
1177 unit->extension.bNumControls = buffer[20];
1178 memcpy(unit->baSourceID, &buffer[22], p);
1179 unit->extension.bControlSize = buffer[22+p];
1180 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1181 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1182
1183 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]);
1184
1185 list_add_tail(&unit->list, &dev->entities);
1186 break;
1187
1188 default:
1189 uvc_dbg(dev, DESCR,
1190 "Found an unknown CS_INTERFACE descriptor (%u)\n",
1191 buffer[2]);
1192 break;
1193 }
1194
1195 return 0;
1196 }
1197
uvc_parse_control(struct uvc_device * dev)1198 static int uvc_parse_control(struct uvc_device *dev)
1199 {
1200 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1201 const unsigned char *buffer = alts->extra;
1202 int buflen = alts->extralen;
1203 int ret;
1204
1205 /*
1206 * Parse the default alternate setting only, as the UVC specification
1207 * defines a single alternate setting, the default alternate setting
1208 * zero.
1209 */
1210
1211 while (buflen > 2) {
1212 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1213 buffer[1] != USB_DT_CS_INTERFACE)
1214 goto next_descriptor;
1215
1216 ret = uvc_parse_standard_control(dev, buffer, buflen);
1217 if (ret < 0)
1218 return ret;
1219
1220 next_descriptor:
1221 buflen -= buffer[0];
1222 buffer += buffer[0];
1223 }
1224
1225 /*
1226 * Check if the optional status endpoint is present. Built-in iSight
1227 * webcams have an interrupt endpoint but spit proprietary data that
1228 * don't conform to the UVC status endpoint messages. Don't try to
1229 * handle the interrupt endpoint for those cameras.
1230 */
1231 if (alts->desc.bNumEndpoints == 1 &&
1232 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1233 struct usb_host_endpoint *ep = &alts->endpoint[0];
1234 struct usb_endpoint_descriptor *desc = &ep->desc;
1235
1236 if (usb_endpoint_is_int_in(desc) &&
1237 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1238 desc->bInterval != 0) {
1239 uvc_dbg(dev, DESCR,
1240 "Found a Status endpoint (addr %02x)\n",
1241 desc->bEndpointAddress);
1242 dev->int_ep = ep;
1243 }
1244 }
1245
1246 return 0;
1247 }
1248
1249 /* -----------------------------------------------------------------------------
1250 * Privacy GPIO
1251 */
1252
uvc_gpio_event(struct uvc_device * dev)1253 static void uvc_gpio_event(struct uvc_device *dev)
1254 {
1255 struct uvc_entity *unit = dev->gpio_unit;
1256 struct uvc_video_chain *chain;
1257 u8 new_val;
1258
1259 if (!unit)
1260 return;
1261
1262 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy);
1263
1264 /* GPIO entities are always on the first chain. */
1265 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list);
1266 uvc_ctrl_status_event(chain, unit->controls, &new_val);
1267 }
1268
uvc_gpio_get_cur(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,void * data,u16 size)1269 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity,
1270 u8 cs, void *data, u16 size)
1271 {
1272 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1)
1273 return -EINVAL;
1274
1275 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy);
1276
1277 return 0;
1278 }
1279
uvc_gpio_get_info(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,u8 * caps)1280 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity,
1281 u8 cs, u8 *caps)
1282 {
1283 if (cs != UVC_CT_PRIVACY_CONTROL)
1284 return -EINVAL;
1285
1286 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE;
1287 return 0;
1288 }
1289
uvc_gpio_irq(int irq,void * data)1290 static irqreturn_t uvc_gpio_irq(int irq, void *data)
1291 {
1292 struct uvc_device *dev = data;
1293
1294 uvc_gpio_event(dev);
1295 return IRQ_HANDLED;
1296 }
1297
uvc_gpio_parse(struct uvc_device * dev)1298 static int uvc_gpio_parse(struct uvc_device *dev)
1299 {
1300 struct uvc_entity *unit;
1301 struct gpio_desc *gpio_privacy;
1302 int irq;
1303
1304 gpio_privacy = devm_gpiod_get_optional(&dev->intf->dev, "privacy",
1305 GPIOD_IN);
1306 if (IS_ERR_OR_NULL(gpio_privacy))
1307 return PTR_ERR_OR_ZERO(gpio_privacy);
1308
1309 irq = gpiod_to_irq(gpio_privacy);
1310 if (irq < 0)
1311 return dev_err_probe(&dev->intf->dev, irq,
1312 "No IRQ for privacy GPIO\n");
1313
1314 unit = uvc_alloc_new_entity(dev, UVC_EXT_GPIO_UNIT,
1315 UVC_EXT_GPIO_UNIT_ID, 0, 1);
1316 if (IS_ERR(unit))
1317 return PTR_ERR(unit);
1318
1319 unit->gpio.gpio_privacy = gpio_privacy;
1320 unit->gpio.irq = irq;
1321 unit->gpio.bControlSize = 1;
1322 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit);
1323 unit->gpio.bmControls[0] = 1;
1324 unit->get_cur = uvc_gpio_get_cur;
1325 unit->get_info = uvc_gpio_get_info;
1326 strscpy(unit->name, "GPIO", sizeof(unit->name));
1327
1328 list_add_tail(&unit->list, &dev->entities);
1329
1330 dev->gpio_unit = unit;
1331
1332 return 0;
1333 }
1334
uvc_gpio_init_irq(struct uvc_device * dev)1335 static int uvc_gpio_init_irq(struct uvc_device *dev)
1336 {
1337 struct uvc_entity *unit = dev->gpio_unit;
1338 int ret;
1339
1340 if (!unit || unit->gpio.irq < 0)
1341 return 0;
1342
1343 ret = request_threaded_irq(unit->gpio.irq, NULL, uvc_gpio_irq,
1344 IRQF_ONESHOT | IRQF_TRIGGER_FALLING |
1345 IRQF_TRIGGER_RISING,
1346 "uvc_privacy_gpio", dev);
1347
1348 unit->gpio.initialized = !ret;
1349
1350 return ret;
1351 }
1352
uvc_gpio_deinit(struct uvc_device * dev)1353 static void uvc_gpio_deinit(struct uvc_device *dev)
1354 {
1355 if (!dev->gpio_unit || !dev->gpio_unit->gpio.initialized)
1356 return;
1357
1358 free_irq(dev->gpio_unit->gpio.irq, dev);
1359 }
1360
1361 /* ------------------------------------------------------------------------
1362 * UVC device scan
1363 */
1364
1365 /*
1366 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1367 * and containing the following units:
1368 *
1369 * - one or more Output Terminals (USB Streaming or Display)
1370 * - zero or one Processing Unit
1371 * - zero, one or more single-input Selector Units
1372 * - zero or one multiple-input Selector Units, provided all inputs are
1373 * connected to input terminals
1374 * - zero, one or mode single-input Extension Units
1375 * - one or more Input Terminals (Camera, External or USB Streaming)
1376 *
1377 * The terminal and units must match on of the following structures:
1378 *
1379 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1380 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1381 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1382 *
1383 * +---------+ +---------+ -> OTT_*(0)
1384 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1385 * +---------+ +---------+ -> OTT_*(n)
1386 *
1387 * The Processing Unit and Extension Units can be in any order. Additional
1388 * Extension Units connected to the main chain as single-unit branches are
1389 * also supported. Single-input Selector Units are ignored.
1390 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1391 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1392 struct uvc_entity *entity)
1393 {
1394 switch (UVC_ENTITY_TYPE(entity)) {
1395 case UVC_VC_EXTENSION_UNIT:
1396 uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
1397
1398 if (entity->bNrInPins != 1) {
1399 uvc_dbg(chain->dev, DESCR,
1400 "Extension unit %d has more than 1 input pin\n",
1401 entity->id);
1402 return -1;
1403 }
1404
1405 break;
1406
1407 case UVC_VC_PROCESSING_UNIT:
1408 uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
1409
1410 if (chain->processing != NULL) {
1411 uvc_dbg(chain->dev, DESCR,
1412 "Found multiple Processing Units in chain\n");
1413 return -1;
1414 }
1415
1416 chain->processing = entity;
1417 break;
1418
1419 case UVC_VC_SELECTOR_UNIT:
1420 uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
1421
1422 /* Single-input selector units are ignored. */
1423 if (entity->bNrInPins == 1)
1424 break;
1425
1426 if (chain->selector != NULL) {
1427 uvc_dbg(chain->dev, DESCR,
1428 "Found multiple Selector Units in chain\n");
1429 return -1;
1430 }
1431
1432 chain->selector = entity;
1433 break;
1434
1435 case UVC_ITT_VENDOR_SPECIFIC:
1436 case UVC_ITT_CAMERA:
1437 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1438 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1439
1440 break;
1441
1442 case UVC_OTT_VENDOR_SPECIFIC:
1443 case UVC_OTT_DISPLAY:
1444 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1445 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1446
1447 break;
1448
1449 case UVC_TT_STREAMING:
1450 if (UVC_ENTITY_IS_ITERM(entity))
1451 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1452 else
1453 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1454
1455 break;
1456
1457 default:
1458 uvc_dbg(chain->dev, DESCR,
1459 "Unsupported entity type 0x%04x found in chain\n",
1460 UVC_ENTITY_TYPE(entity));
1461 return -1;
1462 }
1463
1464 list_add_tail(&entity->chain, &chain->entities);
1465 return 0;
1466 }
1467
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1468 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1469 struct uvc_entity *entity, struct uvc_entity *prev)
1470 {
1471 struct uvc_entity *forward;
1472 int found;
1473
1474 /* Forward scan */
1475 forward = NULL;
1476 found = 0;
1477
1478 while (1) {
1479 forward = uvc_entity_by_reference(chain->dev, entity->id,
1480 forward);
1481 if (forward == NULL)
1482 break;
1483 if (forward == prev)
1484 continue;
1485 if (forward->chain.next || forward->chain.prev) {
1486 uvc_dbg(chain->dev, DESCR,
1487 "Found reference to entity %d already in chain\n",
1488 forward->id);
1489 return -EINVAL;
1490 }
1491
1492 switch (UVC_ENTITY_TYPE(forward)) {
1493 case UVC_VC_EXTENSION_UNIT:
1494 if (forward->bNrInPins != 1) {
1495 uvc_dbg(chain->dev, DESCR,
1496 "Extension unit %d has more than 1 input pin\n",
1497 forward->id);
1498 return -EINVAL;
1499 }
1500
1501 /*
1502 * Some devices reference an output terminal as the
1503 * source of extension units. This is incorrect, as
1504 * output terminals only have an input pin, and thus
1505 * can't be connected to any entity in the forward
1506 * direction. The resulting topology would cause issues
1507 * when registering the media controller graph. To
1508 * avoid this problem, connect the extension unit to
1509 * the source of the output terminal instead.
1510 */
1511 if (UVC_ENTITY_IS_OTERM(entity)) {
1512 struct uvc_entity *source;
1513
1514 source = uvc_entity_by_id(chain->dev,
1515 entity->baSourceID[0]);
1516 if (!source) {
1517 uvc_dbg(chain->dev, DESCR,
1518 "Can't connect extension unit %u in chain\n",
1519 forward->id);
1520 break;
1521 }
1522
1523 forward->baSourceID[0] = source->id;
1524 }
1525
1526 list_add_tail(&forward->chain, &chain->entities);
1527 if (!found)
1528 uvc_dbg_cont(PROBE, " (->");
1529
1530 uvc_dbg_cont(PROBE, " XU %d", forward->id);
1531 found = 1;
1532 break;
1533
1534 case UVC_OTT_VENDOR_SPECIFIC:
1535 case UVC_OTT_DISPLAY:
1536 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1537 case UVC_TT_STREAMING:
1538 if (UVC_ENTITY_IS_ITERM(forward)) {
1539 uvc_dbg(chain->dev, DESCR,
1540 "Unsupported input terminal %u\n",
1541 forward->id);
1542 return -EINVAL;
1543 }
1544
1545 if (UVC_ENTITY_IS_OTERM(entity)) {
1546 uvc_dbg(chain->dev, DESCR,
1547 "Unsupported connection between output terminals %u and %u\n",
1548 entity->id, forward->id);
1549 break;
1550 }
1551
1552 list_add_tail(&forward->chain, &chain->entities);
1553 if (!found)
1554 uvc_dbg_cont(PROBE, " (->");
1555
1556 uvc_dbg_cont(PROBE, " OT %d", forward->id);
1557 found = 1;
1558 break;
1559 }
1560 }
1561 if (found)
1562 uvc_dbg_cont(PROBE, ")");
1563
1564 return 0;
1565 }
1566
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1567 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1568 struct uvc_entity **_entity)
1569 {
1570 struct uvc_entity *entity = *_entity;
1571 struct uvc_entity *term;
1572 int id = -EINVAL, i;
1573
1574 switch (UVC_ENTITY_TYPE(entity)) {
1575 case UVC_VC_EXTENSION_UNIT:
1576 case UVC_VC_PROCESSING_UNIT:
1577 id = entity->baSourceID[0];
1578 break;
1579
1580 case UVC_VC_SELECTOR_UNIT:
1581 /* Single-input selector units are ignored. */
1582 if (entity->bNrInPins == 1) {
1583 id = entity->baSourceID[0];
1584 break;
1585 }
1586
1587 uvc_dbg_cont(PROBE, " <- IT");
1588
1589 chain->selector = entity;
1590 for (i = 0; i < entity->bNrInPins; ++i) {
1591 id = entity->baSourceID[i];
1592 term = uvc_entity_by_id(chain->dev, id);
1593 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1594 uvc_dbg(chain->dev, DESCR,
1595 "Selector unit %d input %d isn't connected to an input terminal\n",
1596 entity->id, i);
1597 return -1;
1598 }
1599
1600 if (term->chain.next || term->chain.prev) {
1601 uvc_dbg(chain->dev, DESCR,
1602 "Found reference to entity %d already in chain\n",
1603 term->id);
1604 return -EINVAL;
1605 }
1606
1607 uvc_dbg_cont(PROBE, " %d", term->id);
1608
1609 list_add_tail(&term->chain, &chain->entities);
1610 uvc_scan_chain_forward(chain, term, entity);
1611 }
1612
1613 uvc_dbg_cont(PROBE, "\n");
1614
1615 id = 0;
1616 break;
1617
1618 case UVC_ITT_VENDOR_SPECIFIC:
1619 case UVC_ITT_CAMERA:
1620 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1621 case UVC_OTT_VENDOR_SPECIFIC:
1622 case UVC_OTT_DISPLAY:
1623 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1624 case UVC_TT_STREAMING:
1625 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1626 break;
1627 }
1628
1629 if (id <= 0) {
1630 *_entity = NULL;
1631 return id;
1632 }
1633
1634 entity = uvc_entity_by_id(chain->dev, id);
1635 if (entity == NULL) {
1636 uvc_dbg(chain->dev, DESCR,
1637 "Found reference to unknown entity %d\n", id);
1638 return -EINVAL;
1639 }
1640
1641 *_entity = entity;
1642 return 0;
1643 }
1644
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1645 static int uvc_scan_chain(struct uvc_video_chain *chain,
1646 struct uvc_entity *term)
1647 {
1648 struct uvc_entity *entity, *prev;
1649
1650 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
1651
1652 entity = term;
1653 prev = NULL;
1654
1655 while (entity != NULL) {
1656 /* Entity must not be part of an existing chain */
1657 if (entity->chain.next || entity->chain.prev) {
1658 uvc_dbg(chain->dev, DESCR,
1659 "Found reference to entity %d already in chain\n",
1660 entity->id);
1661 return -EINVAL;
1662 }
1663
1664 /* Process entity */
1665 if (uvc_scan_chain_entity(chain, entity) < 0)
1666 return -EINVAL;
1667
1668 /* Forward scan */
1669 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1670 return -EINVAL;
1671
1672 /* Backward scan */
1673 prev = entity;
1674 if (uvc_scan_chain_backward(chain, &entity) < 0)
1675 return -EINVAL;
1676 }
1677
1678 return 0;
1679 }
1680
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1681 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1682 char *buffer)
1683 {
1684 struct uvc_entity *term;
1685 unsigned int nterms = 0;
1686 char *p = buffer;
1687
1688 list_for_each_entry(term, terms, chain) {
1689 if (!UVC_ENTITY_IS_TERM(term) ||
1690 UVC_TERM_DIRECTION(term) != dir)
1691 continue;
1692
1693 if (nterms)
1694 p += sprintf(p, ",");
1695 if (++nterms >= 4) {
1696 p += sprintf(p, "...");
1697 break;
1698 }
1699 p += sprintf(p, "%u", term->id);
1700 }
1701
1702 return p - buffer;
1703 }
1704
uvc_print_chain(struct uvc_video_chain * chain)1705 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1706 {
1707 static char buffer[43];
1708 char *p = buffer;
1709
1710 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1711 p += sprintf(p, " -> ");
1712 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1713
1714 return buffer;
1715 }
1716
uvc_alloc_chain(struct uvc_device * dev)1717 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1718 {
1719 struct uvc_video_chain *chain;
1720
1721 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1722 if (chain == NULL)
1723 return NULL;
1724
1725 INIT_LIST_HEAD(&chain->entities);
1726 mutex_init(&chain->ctrl_mutex);
1727 chain->dev = dev;
1728 v4l2_prio_init(&chain->prio);
1729
1730 return chain;
1731 }
1732
1733 /*
1734 * Fallback heuristic for devices that don't connect units and terminals in a
1735 * valid chain.
1736 *
1737 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1738 * to fail, but if we just take the entities we can find and put them together
1739 * in the most sensible chain we can think of, turns out they do work anyway.
1740 * Note: This heuristic assumes there is a single chain.
1741 *
1742 * At the time of writing, devices known to have such a broken chain are
1743 * - Acer Integrated Camera (5986:055a)
1744 * - Realtek rtl157a7 (0bda:57a7)
1745 */
uvc_scan_fallback(struct uvc_device * dev)1746 static int uvc_scan_fallback(struct uvc_device *dev)
1747 {
1748 struct uvc_video_chain *chain;
1749 struct uvc_entity *iterm = NULL;
1750 struct uvc_entity *oterm = NULL;
1751 struct uvc_entity *entity;
1752 struct uvc_entity *prev;
1753
1754 /*
1755 * Start by locating the input and output terminals. We only support
1756 * devices with exactly one of each for now.
1757 */
1758 list_for_each_entry(entity, &dev->entities, list) {
1759 if (UVC_ENTITY_IS_ITERM(entity)) {
1760 if (iterm)
1761 return -EINVAL;
1762 iterm = entity;
1763 }
1764
1765 if (UVC_ENTITY_IS_OTERM(entity)) {
1766 if (oterm)
1767 return -EINVAL;
1768 oterm = entity;
1769 }
1770 }
1771
1772 if (iterm == NULL || oterm == NULL)
1773 return -EINVAL;
1774
1775 /* Allocate the chain and fill it. */
1776 chain = uvc_alloc_chain(dev);
1777 if (chain == NULL)
1778 return -ENOMEM;
1779
1780 if (uvc_scan_chain_entity(chain, oterm) < 0)
1781 goto error;
1782
1783 prev = oterm;
1784
1785 /*
1786 * Add all Processing and Extension Units with two pads. The order
1787 * doesn't matter much, use reverse list traversal to connect units in
1788 * UVC descriptor order as we build the chain from output to input. This
1789 * leads to units appearing in the order meant by the manufacturer for
1790 * the cameras known to require this heuristic.
1791 */
1792 list_for_each_entry_reverse(entity, &dev->entities, list) {
1793 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1794 entity->type != UVC_VC_EXTENSION_UNIT)
1795 continue;
1796
1797 if (entity->num_pads != 2)
1798 continue;
1799
1800 if (uvc_scan_chain_entity(chain, entity) < 0)
1801 goto error;
1802
1803 prev->baSourceID[0] = entity->id;
1804 prev = entity;
1805 }
1806
1807 if (uvc_scan_chain_entity(chain, iterm) < 0)
1808 goto error;
1809
1810 prev->baSourceID[0] = iterm->id;
1811
1812 list_add_tail(&chain->list, &dev->chains);
1813
1814 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
1815 uvc_print_chain(chain));
1816
1817 return 0;
1818
1819 error:
1820 kfree(chain);
1821 return -EINVAL;
1822 }
1823
1824 /*
1825 * Scan the device for video chains and register video devices.
1826 *
1827 * Chains are scanned starting at their output terminals and walked backwards.
1828 */
uvc_scan_device(struct uvc_device * dev)1829 static int uvc_scan_device(struct uvc_device *dev)
1830 {
1831 struct uvc_video_chain *chain;
1832 struct uvc_entity *term;
1833
1834 list_for_each_entry(term, &dev->entities, list) {
1835 if (!UVC_ENTITY_IS_OTERM(term))
1836 continue;
1837
1838 /*
1839 * If the terminal is already included in a chain, skip it.
1840 * This can happen for chains that have multiple output
1841 * terminals, where all output terminals beside the first one
1842 * will be inserted in the chain in forward scans.
1843 */
1844 if (term->chain.next || term->chain.prev)
1845 continue;
1846
1847 chain = uvc_alloc_chain(dev);
1848 if (chain == NULL)
1849 return -ENOMEM;
1850
1851 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1852
1853 if (uvc_scan_chain(chain, term) < 0) {
1854 kfree(chain);
1855 continue;
1856 }
1857
1858 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
1859 uvc_print_chain(chain));
1860
1861 list_add_tail(&chain->list, &dev->chains);
1862 }
1863
1864 if (list_empty(&dev->chains))
1865 uvc_scan_fallback(dev);
1866
1867 if (list_empty(&dev->chains)) {
1868 dev_info(&dev->udev->dev, "No valid video chain found.\n");
1869 return -1;
1870 }
1871
1872 /* Add GPIO entity to the first chain. */
1873 if (dev->gpio_unit) {
1874 chain = list_first_entry(&dev->chains,
1875 struct uvc_video_chain, list);
1876 list_add_tail(&dev->gpio_unit->chain, &chain->entities);
1877 }
1878
1879 return 0;
1880 }
1881
1882 /* ------------------------------------------------------------------------
1883 * Video device registration and unregistration
1884 */
1885
1886 /*
1887 * Delete the UVC device.
1888 *
1889 * Called by the kernel when the last reference to the uvc_device structure
1890 * is released.
1891 *
1892 * As this function is called after or during disconnect(), all URBs have
1893 * already been cancelled by the USB core. There is no need to kill the
1894 * interrupt URB manually.
1895 */
uvc_delete(struct kref * kref)1896 static void uvc_delete(struct kref *kref)
1897 {
1898 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1899 struct list_head *p, *n;
1900
1901 uvc_status_cleanup(dev);
1902 uvc_ctrl_cleanup_device(dev);
1903
1904 usb_put_intf(dev->intf);
1905 usb_put_dev(dev->udev);
1906
1907 #ifdef CONFIG_MEDIA_CONTROLLER
1908 media_device_cleanup(&dev->mdev);
1909 #endif
1910
1911 list_for_each_safe(p, n, &dev->chains) {
1912 struct uvc_video_chain *chain;
1913
1914 chain = list_entry(p, struct uvc_video_chain, list);
1915 kfree(chain);
1916 }
1917
1918 list_for_each_safe(p, n, &dev->entities) {
1919 struct uvc_entity *entity;
1920
1921 entity = list_entry(p, struct uvc_entity, list);
1922 #ifdef CONFIG_MEDIA_CONTROLLER
1923 uvc_mc_cleanup_entity(entity);
1924 #endif
1925 kfree(entity);
1926 }
1927
1928 list_for_each_safe(p, n, &dev->streams) {
1929 struct uvc_streaming *streaming;
1930
1931 streaming = list_entry(p, struct uvc_streaming, list);
1932 usb_driver_release_interface(&uvc_driver.driver,
1933 streaming->intf);
1934 uvc_stream_delete(streaming);
1935 }
1936
1937 kfree(dev);
1938 }
1939
uvc_release(struct video_device * vdev)1940 static void uvc_release(struct video_device *vdev)
1941 {
1942 struct uvc_streaming *stream = video_get_drvdata(vdev);
1943 struct uvc_device *dev = stream->dev;
1944
1945 kref_put(&dev->ref, uvc_delete);
1946 }
1947
1948 /*
1949 * Unregister the video devices.
1950 */
uvc_unregister_video(struct uvc_device * dev)1951 static void uvc_unregister_video(struct uvc_device *dev)
1952 {
1953 struct uvc_streaming *stream;
1954
1955 uvc_gpio_deinit(dev);
1956
1957 list_for_each_entry(stream, &dev->streams, list) {
1958 /* Nothing to do here, continue. */
1959 if (!video_is_registered(&stream->vdev))
1960 continue;
1961
1962 /*
1963 * For stream->vdev we follow the same logic as:
1964 * vb2_video_unregister_device().
1965 */
1966
1967 /* 1. Take a reference to vdev */
1968 get_device(&stream->vdev.dev);
1969
1970 /* 2. Ensure that no new ioctls can be called. */
1971 video_unregister_device(&stream->vdev);
1972
1973 /* 3. Wait for old ioctls to finish. */
1974 mutex_lock(&stream->mutex);
1975
1976 /* 4. Stop streaming. */
1977 uvc_queue_release(&stream->queue);
1978
1979 mutex_unlock(&stream->mutex);
1980
1981 put_device(&stream->vdev.dev);
1982
1983 /*
1984 * For stream->meta.vdev we can directly call:
1985 * vb2_video_unregister_device().
1986 */
1987 vb2_video_unregister_device(&stream->meta.vdev);
1988
1989 /*
1990 * Now both vdevs are not streaming and all the ioctls will
1991 * return -ENODEV.
1992 */
1993
1994 uvc_debugfs_cleanup_stream(stream);
1995 }
1996
1997 uvc_status_unregister(dev);
1998
1999 if (dev->vdev.dev)
2000 v4l2_device_unregister(&dev->vdev);
2001 #ifdef CONFIG_MEDIA_CONTROLLER
2002 if (media_devnode_is_registered(dev->mdev.devnode))
2003 media_device_unregister(&dev->mdev);
2004 #endif
2005 }
2006
uvc_register_video_device(struct uvc_device * dev,struct uvc_streaming * stream,struct video_device * vdev,struct uvc_video_queue * queue,enum v4l2_buf_type type,const struct v4l2_file_operations * fops,const struct v4l2_ioctl_ops * ioctl_ops)2007 int uvc_register_video_device(struct uvc_device *dev,
2008 struct uvc_streaming *stream,
2009 struct video_device *vdev,
2010 struct uvc_video_queue *queue,
2011 enum v4l2_buf_type type,
2012 const struct v4l2_file_operations *fops,
2013 const struct v4l2_ioctl_ops *ioctl_ops)
2014 {
2015 int ret;
2016
2017 /* Initialize the video buffers queue. */
2018 ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
2019 if (ret)
2020 return ret;
2021
2022 /* Register the device with V4L. */
2023
2024 /*
2025 * We already hold a reference to dev->udev. The video device will be
2026 * unregistered before the reference is released, so we don't need to
2027 * get another one.
2028 */
2029 vdev->v4l2_dev = &dev->vdev;
2030 vdev->fops = fops;
2031 vdev->ioctl_ops = ioctl_ops;
2032 vdev->release = uvc_release;
2033 vdev->prio = &stream->chain->prio;
2034 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2035 vdev->vfl_dir = VFL_DIR_TX;
2036 else
2037 vdev->vfl_dir = VFL_DIR_RX;
2038
2039 switch (type) {
2040 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2041 default:
2042 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
2043 break;
2044 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2045 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
2046 break;
2047 case V4L2_BUF_TYPE_META_CAPTURE:
2048 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
2049 break;
2050 }
2051
2052 strscpy(vdev->name, dev->name, sizeof(vdev->name));
2053
2054 /*
2055 * Set the driver data before calling video_register_device, otherwise
2056 * the file open() handler might race us.
2057 */
2058 video_set_drvdata(vdev, stream);
2059
2060 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
2061 if (ret < 0) {
2062 dev_err(&stream->intf->dev,
2063 "Failed to register %s device (%d).\n",
2064 v4l2_type_names[type], ret);
2065 return ret;
2066 }
2067
2068 kref_get(&dev->ref);
2069 return 0;
2070 }
2071
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)2072 static int uvc_register_video(struct uvc_device *dev,
2073 struct uvc_streaming *stream)
2074 {
2075 int ret;
2076
2077 /* Initialize the streaming interface with default parameters. */
2078 ret = uvc_video_init(stream);
2079 if (ret < 0) {
2080 dev_err(&stream->intf->dev,
2081 "Failed to initialize the device (%d).\n", ret);
2082 return ret;
2083 }
2084
2085 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2086 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2087 | V4L2_CAP_META_CAPTURE;
2088 else
2089 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2090
2091 uvc_debugfs_init_stream(stream);
2092
2093 /* Register the device with V4L. */
2094 return uvc_register_video_device(dev, stream, &stream->vdev,
2095 &stream->queue, stream->type,
2096 &uvc_fops, &uvc_ioctl_ops);
2097 }
2098
2099 /*
2100 * Register all video devices in all chains.
2101 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2102 static int uvc_register_terms(struct uvc_device *dev,
2103 struct uvc_video_chain *chain)
2104 {
2105 struct uvc_streaming *stream;
2106 struct uvc_entity *term;
2107 int ret;
2108
2109 list_for_each_entry(term, &chain->entities, chain) {
2110 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2111 continue;
2112
2113 stream = uvc_stream_by_id(dev, term->id);
2114 if (stream == NULL) {
2115 dev_info(&dev->udev->dev,
2116 "No streaming interface found for terminal %u.",
2117 term->id);
2118 continue;
2119 }
2120
2121 stream->chain = chain;
2122 ret = uvc_register_video(dev, stream);
2123 if (ret < 0)
2124 return ret;
2125
2126 /*
2127 * Register a metadata node, but ignore a possible failure,
2128 * complete registration of video nodes anyway.
2129 */
2130 uvc_meta_register(stream);
2131
2132 term->vdev = &stream->vdev;
2133 }
2134
2135 return 0;
2136 }
2137
uvc_register_chains(struct uvc_device * dev)2138 static int uvc_register_chains(struct uvc_device *dev)
2139 {
2140 struct uvc_video_chain *chain;
2141 int ret;
2142
2143 list_for_each_entry(chain, &dev->chains, list) {
2144 ret = uvc_register_terms(dev, chain);
2145 if (ret < 0)
2146 return ret;
2147
2148 #ifdef CONFIG_MEDIA_CONTROLLER
2149 ret = uvc_mc_register_entities(chain);
2150 if (ret < 0)
2151 dev_info(&dev->udev->dev,
2152 "Failed to register entities (%d).\n", ret);
2153 #endif
2154 }
2155
2156 return 0;
2157 }
2158
2159 /* ------------------------------------------------------------------------
2160 * USB probe, disconnect, suspend and resume
2161 */
2162
2163 static const struct uvc_device_info uvc_quirk_none = { 0 };
2164
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2165 static int uvc_probe(struct usb_interface *intf,
2166 const struct usb_device_id *id)
2167 {
2168 struct usb_device *udev = interface_to_usbdev(intf);
2169 struct uvc_device *dev;
2170 const struct uvc_device_info *info =
2171 (const struct uvc_device_info *)id->driver_info;
2172 int function;
2173 int ret;
2174
2175 /* Allocate memory for the device and initialize it. */
2176 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2177 if (dev == NULL)
2178 return -ENOMEM;
2179
2180 INIT_LIST_HEAD(&dev->entities);
2181 INIT_LIST_HEAD(&dev->chains);
2182 INIT_LIST_HEAD(&dev->streams);
2183 kref_init(&dev->ref);
2184 atomic_set(&dev->nmappings, 0);
2185 mutex_init(&dev->lock);
2186
2187 dev->udev = usb_get_dev(udev);
2188 dev->intf = usb_get_intf(intf);
2189 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2190 dev->info = info ? info : &uvc_quirk_none;
2191 dev->quirks = uvc_quirks_param == -1
2192 ? dev->info->quirks : uvc_quirks_param;
2193
2194 if (id->idVendor && id->idProduct)
2195 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
2196 udev->devpath, id->idVendor, id->idProduct);
2197 else
2198 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
2199 udev->devpath);
2200
2201 if (udev->product != NULL)
2202 strscpy(dev->name, udev->product, sizeof(dev->name));
2203 else
2204 snprintf(dev->name, sizeof(dev->name),
2205 "UVC Camera (%04x:%04x)",
2206 le16_to_cpu(udev->descriptor.idVendor),
2207 le16_to_cpu(udev->descriptor.idProduct));
2208
2209 /*
2210 * Add iFunction or iInterface to names when available as additional
2211 * distinguishers between interfaces. iFunction is prioritized over
2212 * iInterface which matches Windows behavior at the point of writing.
2213 */
2214 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2215 function = intf->intf_assoc->iFunction;
2216 else
2217 function = intf->cur_altsetting->desc.iInterface;
2218 if (function != 0) {
2219 size_t len;
2220
2221 strlcat(dev->name, ": ", sizeof(dev->name));
2222 len = strlen(dev->name);
2223 usb_string(udev, function, dev->name + len,
2224 sizeof(dev->name) - len);
2225 }
2226
2227 /* Initialize the media device. */
2228 #ifdef CONFIG_MEDIA_CONTROLLER
2229 dev->mdev.dev = &intf->dev;
2230 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2231 if (udev->serial)
2232 strscpy(dev->mdev.serial, udev->serial,
2233 sizeof(dev->mdev.serial));
2234 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2235 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2236 media_device_init(&dev->mdev);
2237
2238 dev->vdev.mdev = &dev->mdev;
2239 #endif
2240
2241 /* Parse the Video Class control descriptor. */
2242 ret = uvc_parse_control(dev);
2243 if (ret < 0) {
2244 ret = -ENODEV;
2245 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
2246 goto error;
2247 }
2248
2249 /* Parse the associated GPIOs. */
2250 ret = uvc_gpio_parse(dev);
2251 if (ret < 0) {
2252 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
2253 goto error;
2254 }
2255
2256 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2257 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2258 udev->product ? udev->product : "<unnamed>",
2259 le16_to_cpu(udev->descriptor.idVendor),
2260 le16_to_cpu(udev->descriptor.idProduct));
2261
2262 if (dev->quirks != dev->info->quirks) {
2263 dev_info(&dev->udev->dev,
2264 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
2265 dev->quirks);
2266 dev_info(&dev->udev->dev,
2267 "Please report required quirks to the linux-media mailing list.\n");
2268 }
2269
2270 if (dev->info->uvc_version) {
2271 dev->uvc_version = dev->info->uvc_version;
2272 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n",
2273 dev->uvc_version >> 8, dev->uvc_version & 0xff);
2274 }
2275
2276 /* Register the V4L2 device. */
2277 ret = v4l2_device_register(&intf->dev, &dev->vdev);
2278 if (ret < 0)
2279 goto error;
2280
2281 /* Scan the device for video chains. */
2282 if (uvc_scan_device(dev) < 0) {
2283 ret = -ENODEV;
2284 goto error;
2285 }
2286
2287 /* Initialize controls. */
2288 if (uvc_ctrl_init_device(dev) < 0) {
2289 ret = -ENODEV;
2290 goto error;
2291 }
2292
2293 /* Register video device nodes. */
2294 if (uvc_register_chains(dev) < 0) {
2295 ret = -ENODEV;
2296 goto error;
2297 }
2298
2299 #ifdef CONFIG_MEDIA_CONTROLLER
2300 /* Register the media device node */
2301 ret = media_device_register(&dev->mdev);
2302 if (ret < 0)
2303 goto error;
2304 #endif
2305 /* Save our data pointer in the interface data. */
2306 usb_set_intfdata(intf, dev);
2307
2308 /* Initialize the interrupt URB. */
2309 ret = uvc_status_init(dev);
2310 if (ret < 0) {
2311 dev_info(&dev->udev->dev,
2312 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
2313 ret);
2314 }
2315
2316 ret = uvc_gpio_init_irq(dev);
2317 if (ret < 0) {
2318 dev_err(&dev->udev->dev,
2319 "Unable to request privacy GPIO IRQ (%d)\n", ret);
2320 goto error;
2321 }
2322
2323 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME)
2324 udev->quirks &= ~USB_QUIRK_RESET_RESUME;
2325
2326 if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND))
2327 usb_enable_autosuspend(udev);
2328
2329 uvc_dbg(dev, PROBE, "UVC device initialized\n");
2330
2331 return 0;
2332
2333 error:
2334 uvc_unregister_video(dev);
2335 kref_put(&dev->ref, uvc_delete);
2336 return ret;
2337 }
2338
uvc_disconnect(struct usb_interface * intf)2339 static void uvc_disconnect(struct usb_interface *intf)
2340 {
2341 struct uvc_device *dev = usb_get_intfdata(intf);
2342
2343 /*
2344 * Set the USB interface data to NULL. This can be done outside the
2345 * lock, as there's no other reader.
2346 */
2347 usb_set_intfdata(intf, NULL);
2348
2349 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2350 UVC_SC_VIDEOSTREAMING)
2351 return;
2352
2353 uvc_unregister_video(dev);
2354 kref_put(&dev->ref, uvc_delete);
2355 }
2356
uvc_suspend(struct usb_interface * intf,pm_message_t message)2357 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2358 {
2359 struct uvc_device *dev = usb_get_intfdata(intf);
2360 struct uvc_streaming *stream;
2361
2362 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
2363 intf->cur_altsetting->desc.bInterfaceNumber);
2364
2365 /* Controls are cached on the fly so they don't need to be saved. */
2366 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2367 UVC_SC_VIDEOCONTROL) {
2368 mutex_lock(&dev->lock);
2369 if (dev->users)
2370 uvc_status_stop(dev);
2371 mutex_unlock(&dev->lock);
2372 return 0;
2373 }
2374
2375 list_for_each_entry(stream, &dev->streams, list) {
2376 if (stream->intf == intf)
2377 return uvc_video_suspend(stream);
2378 }
2379
2380 uvc_dbg(dev, SUSPEND,
2381 "Suspend: video streaming USB interface mismatch\n");
2382 return -EINVAL;
2383 }
2384
__uvc_resume(struct usb_interface * intf,int reset)2385 static int __uvc_resume(struct usb_interface *intf, int reset)
2386 {
2387 struct uvc_device *dev = usb_get_intfdata(intf);
2388 struct uvc_streaming *stream;
2389 int ret = 0;
2390
2391 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
2392 intf->cur_altsetting->desc.bInterfaceNumber);
2393
2394 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2395 UVC_SC_VIDEOCONTROL) {
2396 if (reset) {
2397 ret = uvc_ctrl_restore_values(dev);
2398 if (ret < 0)
2399 return ret;
2400 }
2401
2402 mutex_lock(&dev->lock);
2403 if (dev->users)
2404 ret = uvc_status_start(dev, GFP_NOIO);
2405 mutex_unlock(&dev->lock);
2406
2407 return ret;
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 uvc_queue_streamoff(&stream->queue,
2415 stream->queue.queue.type);
2416 return ret;
2417 }
2418 }
2419
2420 uvc_dbg(dev, SUSPEND,
2421 "Resume: video streaming USB interface mismatch\n");
2422 return -EINVAL;
2423 }
2424
uvc_resume(struct usb_interface * intf)2425 static int uvc_resume(struct usb_interface *intf)
2426 {
2427 return __uvc_resume(intf, 0);
2428 }
2429
uvc_reset_resume(struct usb_interface * intf)2430 static int uvc_reset_resume(struct usb_interface *intf)
2431 {
2432 return __uvc_resume(intf, 1);
2433 }
2434
2435 /* ------------------------------------------------------------------------
2436 * Module parameters
2437 */
2438
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2439 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2440 {
2441 if (uvc_clock_param == CLOCK_MONOTONIC)
2442 return sprintf(buffer, "CLOCK_MONOTONIC");
2443 else
2444 return sprintf(buffer, "CLOCK_REALTIME");
2445 }
2446
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2447 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2448 {
2449 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2450 val += strlen("clock_");
2451
2452 if (strcasecmp(val, "monotonic") == 0)
2453 uvc_clock_param = CLOCK_MONOTONIC;
2454 else if (strcasecmp(val, "realtime") == 0)
2455 uvc_clock_param = CLOCK_REALTIME;
2456 else
2457 return -EINVAL;
2458
2459 return 0;
2460 }
2461
2462 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2463 &uvc_clock_param, 0644);
2464 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2465 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644);
2466 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2467 module_param_named(nodrop, uvc_no_drop_param, uint, 0644);
2468 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2469 module_param_named(quirks, uvc_quirks_param, uint, 0644);
2470 MODULE_PARM_DESC(quirks, "Forced device quirks");
2471 module_param_named(trace, uvc_dbg_param, uint, 0644);
2472 MODULE_PARM_DESC(trace, "Trace level bitmask");
2473 module_param_named(timeout, uvc_timeout_param, uint, 0644);
2474 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2475
2476 /* ------------------------------------------------------------------------
2477 * Driver initialization and cleanup
2478 */
2479
2480 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2481 .quirks = UVC_QUIRK_PROBE_MINMAX,
2482 };
2483
2484 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2485 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2486 };
2487
2488 static const struct uvc_device_info uvc_quirk_probe_def = {
2489 .quirks = UVC_QUIRK_PROBE_DEF,
2490 };
2491
2492 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2493 .quirks = UVC_QUIRK_STREAM_NO_FID,
2494 };
2495
2496 static const struct uvc_device_info uvc_quirk_force_y8 = {
2497 .quirks = UVC_QUIRK_FORCE_Y8,
2498 };
2499
2500 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2501 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2502 {.meta_format = m}
2503
2504 /*
2505 * The Logitech cameras listed below have their interface class set to
2506 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2507 * though they are compliant.
2508 *
2509 * Sort these by vendor/product ID.
2510 */
2511 static const struct usb_device_id uvc_ids[] = {
2512 /* HP Webcam HD 2300 */
2513 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2514 | USB_DEVICE_ID_MATCH_INT_INFO,
2515 .idVendor = 0x03f0,
2516 .idProduct = 0xe207,
2517 .bInterfaceClass = USB_CLASS_VIDEO,
2518 .bInterfaceSubClass = 1,
2519 .bInterfaceProtocol = 0,
2520 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2521 /* Quanta ACER HD User Facing */
2522 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2523 | USB_DEVICE_ID_MATCH_INT_INFO,
2524 .idVendor = 0x0408,
2525 .idProduct = 0x4033,
2526 .bInterfaceClass = USB_CLASS_VIDEO,
2527 .bInterfaceSubClass = 1,
2528 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2529 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2530 .uvc_version = 0x010a,
2531 } },
2532 /* Quanta ACER HD User Facing */
2533 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2534 | USB_DEVICE_ID_MATCH_INT_INFO,
2535 .idVendor = 0x0408,
2536 .idProduct = 0x4035,
2537 .bInterfaceClass = USB_CLASS_VIDEO,
2538 .bInterfaceSubClass = 1,
2539 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2540 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2541 .uvc_version = 0x010a,
2542 } },
2543 /* LogiLink Wireless Webcam */
2544 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2545 | USB_DEVICE_ID_MATCH_INT_INFO,
2546 .idVendor = 0x0416,
2547 .idProduct = 0xa91a,
2548 .bInterfaceClass = USB_CLASS_VIDEO,
2549 .bInterfaceSubClass = 1,
2550 .bInterfaceProtocol = 0,
2551 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2552 /* Genius eFace 2025 */
2553 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2554 | USB_DEVICE_ID_MATCH_INT_INFO,
2555 .idVendor = 0x0458,
2556 .idProduct = 0x706e,
2557 .bInterfaceClass = USB_CLASS_VIDEO,
2558 .bInterfaceSubClass = 1,
2559 .bInterfaceProtocol = 0,
2560 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2561 /* Microsoft Lifecam NX-6000 */
2562 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2563 | USB_DEVICE_ID_MATCH_INT_INFO,
2564 .idVendor = 0x045e,
2565 .idProduct = 0x00f8,
2566 .bInterfaceClass = USB_CLASS_VIDEO,
2567 .bInterfaceSubClass = 1,
2568 .bInterfaceProtocol = 0,
2569 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2570 /* Microsoft Lifecam NX-3000 */
2571 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2572 | USB_DEVICE_ID_MATCH_INT_INFO,
2573 .idVendor = 0x045e,
2574 .idProduct = 0x0721,
2575 .bInterfaceClass = USB_CLASS_VIDEO,
2576 .bInterfaceSubClass = 1,
2577 .bInterfaceProtocol = 0,
2578 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2579 /* Microsoft Lifecam VX-7000 */
2580 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2581 | USB_DEVICE_ID_MATCH_INT_INFO,
2582 .idVendor = 0x045e,
2583 .idProduct = 0x0723,
2584 .bInterfaceClass = USB_CLASS_VIDEO,
2585 .bInterfaceSubClass = 1,
2586 .bInterfaceProtocol = 0,
2587 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2588 /* Logitech, Webcam C910 */
2589 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2590 | USB_DEVICE_ID_MATCH_INT_INFO,
2591 .idVendor = 0x046d,
2592 .idProduct = 0x0821,
2593 .bInterfaceClass = USB_CLASS_VIDEO,
2594 .bInterfaceSubClass = 1,
2595 .bInterfaceProtocol = 0,
2596 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2597 /* Logitech, Webcam B910 */
2598 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2599 | USB_DEVICE_ID_MATCH_INT_INFO,
2600 .idVendor = 0x046d,
2601 .idProduct = 0x0823,
2602 .bInterfaceClass = USB_CLASS_VIDEO,
2603 .bInterfaceSubClass = 1,
2604 .bInterfaceProtocol = 0,
2605 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2606 /* Logitech Quickcam Fusion */
2607 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2608 | USB_DEVICE_ID_MATCH_INT_INFO,
2609 .idVendor = 0x046d,
2610 .idProduct = 0x08c1,
2611 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2612 .bInterfaceSubClass = 1,
2613 .bInterfaceProtocol = 0 },
2614 /* Logitech Quickcam Orbit MP */
2615 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2616 | USB_DEVICE_ID_MATCH_INT_INFO,
2617 .idVendor = 0x046d,
2618 .idProduct = 0x08c2,
2619 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2620 .bInterfaceSubClass = 1,
2621 .bInterfaceProtocol = 0 },
2622 /* Logitech Quickcam Pro for Notebook */
2623 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2624 | USB_DEVICE_ID_MATCH_INT_INFO,
2625 .idVendor = 0x046d,
2626 .idProduct = 0x08c3,
2627 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2628 .bInterfaceSubClass = 1,
2629 .bInterfaceProtocol = 0 },
2630 /* Logitech Quickcam Pro 5000 */
2631 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2632 | USB_DEVICE_ID_MATCH_INT_INFO,
2633 .idVendor = 0x046d,
2634 .idProduct = 0x08c5,
2635 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2636 .bInterfaceSubClass = 1,
2637 .bInterfaceProtocol = 0 },
2638 /* Logitech Quickcam OEM Dell Notebook */
2639 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2640 | USB_DEVICE_ID_MATCH_INT_INFO,
2641 .idVendor = 0x046d,
2642 .idProduct = 0x08c6,
2643 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2644 .bInterfaceSubClass = 1,
2645 .bInterfaceProtocol = 0 },
2646 /* Logitech Quickcam OEM Cisco VT Camera II */
2647 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2648 | USB_DEVICE_ID_MATCH_INT_INFO,
2649 .idVendor = 0x046d,
2650 .idProduct = 0x08c7,
2651 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2652 .bInterfaceSubClass = 1,
2653 .bInterfaceProtocol = 0 },
2654 /* Logitech HD Pro Webcam C920 */
2655 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2656 | USB_DEVICE_ID_MATCH_INT_INFO,
2657 .idVendor = 0x046d,
2658 .idProduct = 0x082d,
2659 .bInterfaceClass = USB_CLASS_VIDEO,
2660 .bInterfaceSubClass = 1,
2661 .bInterfaceProtocol = 0,
2662 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT
2663 | UVC_QUIRK_INVALID_DEVICE_SOF) },
2664 /* Logitech HD Pro Webcam C922 */
2665 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2666 | USB_DEVICE_ID_MATCH_INT_INFO,
2667 .idVendor = 0x046d,
2668 .idProduct = 0x085c,
2669 .bInterfaceClass = USB_CLASS_VIDEO,
2670 .bInterfaceSubClass = 1,
2671 .bInterfaceProtocol = 0,
2672 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_INVALID_DEVICE_SOF) },
2673 /* Logitech Rally Bar Huddle */
2674 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2675 | USB_DEVICE_ID_MATCH_INT_INFO,
2676 .idVendor = 0x046d,
2677 .idProduct = 0x087c,
2678 .bInterfaceClass = USB_CLASS_VIDEO,
2679 .bInterfaceSubClass = 1,
2680 .bInterfaceProtocol = 0,
2681 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2682 /* Logitech Rally Bar */
2683 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2684 | USB_DEVICE_ID_MATCH_INT_INFO,
2685 .idVendor = 0x046d,
2686 .idProduct = 0x089b,
2687 .bInterfaceClass = USB_CLASS_VIDEO,
2688 .bInterfaceSubClass = 1,
2689 .bInterfaceProtocol = 0,
2690 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2691 /* Logitech Rally Bar Mini */
2692 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2693 | USB_DEVICE_ID_MATCH_INT_INFO,
2694 .idVendor = 0x046d,
2695 .idProduct = 0x08d3,
2696 .bInterfaceClass = USB_CLASS_VIDEO,
2697 .bInterfaceSubClass = 1,
2698 .bInterfaceProtocol = 0,
2699 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2700 /* Chicony CNF7129 (Asus EEE 100HE) */
2701 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2702 | USB_DEVICE_ID_MATCH_INT_INFO,
2703 .idVendor = 0x04f2,
2704 .idProduct = 0xb071,
2705 .bInterfaceClass = USB_CLASS_VIDEO,
2706 .bInterfaceSubClass = 1,
2707 .bInterfaceProtocol = 0,
2708 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2709 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2710 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2711 | USB_DEVICE_ID_MATCH_INT_INFO,
2712 .idVendor = 0x058f,
2713 .idProduct = 0x3820,
2714 .bInterfaceClass = USB_CLASS_VIDEO,
2715 .bInterfaceSubClass = 1,
2716 .bInterfaceProtocol = 0,
2717 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2718 /* Dell XPS m1530 */
2719 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2720 | USB_DEVICE_ID_MATCH_INT_INFO,
2721 .idVendor = 0x05a9,
2722 .idProduct = 0x2640,
2723 .bInterfaceClass = USB_CLASS_VIDEO,
2724 .bInterfaceSubClass = 1,
2725 .bInterfaceProtocol = 0,
2726 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2727 /* Dell SP2008WFP Monitor */
2728 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2729 | USB_DEVICE_ID_MATCH_INT_INFO,
2730 .idVendor = 0x05a9,
2731 .idProduct = 0x2641,
2732 .bInterfaceClass = USB_CLASS_VIDEO,
2733 .bInterfaceSubClass = 1,
2734 .bInterfaceProtocol = 0,
2735 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2736 /* Dell Alienware X51 */
2737 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2738 | USB_DEVICE_ID_MATCH_INT_INFO,
2739 .idVendor = 0x05a9,
2740 .idProduct = 0x2643,
2741 .bInterfaceClass = USB_CLASS_VIDEO,
2742 .bInterfaceSubClass = 1,
2743 .bInterfaceProtocol = 0,
2744 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2745 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2746 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2747 | USB_DEVICE_ID_MATCH_INT_INFO,
2748 .idVendor = 0x05a9,
2749 .idProduct = 0x264a,
2750 .bInterfaceClass = USB_CLASS_VIDEO,
2751 .bInterfaceSubClass = 1,
2752 .bInterfaceProtocol = 0,
2753 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2754 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2755 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2756 | USB_DEVICE_ID_MATCH_INT_INFO,
2757 .idVendor = 0x05a9,
2758 .idProduct = 0x7670,
2759 .bInterfaceClass = USB_CLASS_VIDEO,
2760 .bInterfaceSubClass = 1,
2761 .bInterfaceProtocol = 0,
2762 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2763 /* Apple Built-In iSight */
2764 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2765 | USB_DEVICE_ID_MATCH_INT_INFO,
2766 .idVendor = 0x05ac,
2767 .idProduct = 0x8501,
2768 .bInterfaceClass = USB_CLASS_VIDEO,
2769 .bInterfaceSubClass = 1,
2770 .bInterfaceProtocol = 0,
2771 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2772 | UVC_QUIRK_BUILTIN_ISIGHT) },
2773 /* Apple FaceTime HD Camera (Built-In) */
2774 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2775 | USB_DEVICE_ID_MATCH_INT_INFO,
2776 .idVendor = 0x05ac,
2777 .idProduct = 0x8514,
2778 .bInterfaceClass = USB_CLASS_VIDEO,
2779 .bInterfaceSubClass = 1,
2780 .bInterfaceProtocol = 0,
2781 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2782 /* Apple Built-In iSight via iBridge */
2783 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2784 | USB_DEVICE_ID_MATCH_INT_INFO,
2785 .idVendor = 0x05ac,
2786 .idProduct = 0x8600,
2787 .bInterfaceClass = USB_CLASS_VIDEO,
2788 .bInterfaceSubClass = 1,
2789 .bInterfaceProtocol = 0,
2790 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2791 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2792 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2793 | USB_DEVICE_ID_MATCH_INT_INFO,
2794 .idVendor = 0x05c8,
2795 .idProduct = 0x0403,
2796 .bInterfaceClass = USB_CLASS_VIDEO,
2797 .bInterfaceSubClass = 1,
2798 .bInterfaceProtocol = 0,
2799 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2800 /* Genesys Logic USB 2.0 PC Camera */
2801 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2802 | USB_DEVICE_ID_MATCH_INT_INFO,
2803 .idVendor = 0x05e3,
2804 .idProduct = 0x0505,
2805 .bInterfaceClass = USB_CLASS_VIDEO,
2806 .bInterfaceSubClass = 1,
2807 .bInterfaceProtocol = 0,
2808 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2809 /* Hercules Classic Silver */
2810 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2811 | USB_DEVICE_ID_MATCH_INT_INFO,
2812 .idVendor = 0x06f8,
2813 .idProduct = 0x300c,
2814 .bInterfaceClass = USB_CLASS_VIDEO,
2815 .bInterfaceSubClass = 1,
2816 .bInterfaceProtocol = 0,
2817 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2818 /* ViMicro Vega */
2819 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2820 | USB_DEVICE_ID_MATCH_INT_INFO,
2821 .idVendor = 0x0ac8,
2822 .idProduct = 0x332d,
2823 .bInterfaceClass = USB_CLASS_VIDEO,
2824 .bInterfaceSubClass = 1,
2825 .bInterfaceProtocol = 0,
2826 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2827 /* ViMicro - Minoru3D */
2828 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2829 | USB_DEVICE_ID_MATCH_INT_INFO,
2830 .idVendor = 0x0ac8,
2831 .idProduct = 0x3410,
2832 .bInterfaceClass = USB_CLASS_VIDEO,
2833 .bInterfaceSubClass = 1,
2834 .bInterfaceProtocol = 0,
2835 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2836 /* ViMicro Venus - Minoru3D */
2837 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2838 | USB_DEVICE_ID_MATCH_INT_INFO,
2839 .idVendor = 0x0ac8,
2840 .idProduct = 0x3420,
2841 .bInterfaceClass = USB_CLASS_VIDEO,
2842 .bInterfaceSubClass = 1,
2843 .bInterfaceProtocol = 0,
2844 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2845 /* Ophir Optronics - SPCAM 620U */
2846 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2847 | USB_DEVICE_ID_MATCH_INT_INFO,
2848 .idVendor = 0x0bd3,
2849 .idProduct = 0x0555,
2850 .bInterfaceClass = USB_CLASS_VIDEO,
2851 .bInterfaceSubClass = 1,
2852 .bInterfaceProtocol = 0,
2853 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2854 /* Sonix Technology Co. Ltd. - 292A IPC AR0330 */
2855 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2856 | USB_DEVICE_ID_MATCH_INT_INFO,
2857 .idVendor = 0x0c45,
2858 .idProduct = 0x6366,
2859 .bInterfaceClass = USB_CLASS_VIDEO,
2860 .bInterfaceSubClass = 1,
2861 .bInterfaceProtocol = 0,
2862 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) },
2863 /* MT6227 */
2864 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2865 | USB_DEVICE_ID_MATCH_INT_INFO,
2866 .idVendor = 0x0e8d,
2867 .idProduct = 0x0004,
2868 .bInterfaceClass = USB_CLASS_VIDEO,
2869 .bInterfaceSubClass = 1,
2870 .bInterfaceProtocol = 0,
2871 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2872 | UVC_QUIRK_PROBE_DEF) },
2873 /* IMC Networks (Medion Akoya) */
2874 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2875 | USB_DEVICE_ID_MATCH_INT_INFO,
2876 .idVendor = 0x13d3,
2877 .idProduct = 0x5103,
2878 .bInterfaceClass = USB_CLASS_VIDEO,
2879 .bInterfaceSubClass = 1,
2880 .bInterfaceProtocol = 0,
2881 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2882 /* JMicron USB2.0 XGA WebCam */
2883 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2884 | USB_DEVICE_ID_MATCH_INT_INFO,
2885 .idVendor = 0x152d,
2886 .idProduct = 0x0310,
2887 .bInterfaceClass = USB_CLASS_VIDEO,
2888 .bInterfaceSubClass = 1,
2889 .bInterfaceProtocol = 0,
2890 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2891 /* Kurokesu C1 PRO */
2892 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2893 | USB_DEVICE_ID_MATCH_INT_INFO,
2894 .idVendor = 0x16d0,
2895 .idProduct = 0x0ed1,
2896 .bInterfaceClass = USB_CLASS_VIDEO,
2897 .bInterfaceSubClass = 1,
2898 .bInterfaceProtocol = 0,
2899 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) },
2900 /* Syntek (HP Spartan) */
2901 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2902 | USB_DEVICE_ID_MATCH_INT_INFO,
2903 .idVendor = 0x174f,
2904 .idProduct = 0x5212,
2905 .bInterfaceClass = USB_CLASS_VIDEO,
2906 .bInterfaceSubClass = 1,
2907 .bInterfaceProtocol = 0,
2908 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2909 /* Syntek (Samsung Q310) */
2910 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2911 | USB_DEVICE_ID_MATCH_INT_INFO,
2912 .idVendor = 0x174f,
2913 .idProduct = 0x5931,
2914 .bInterfaceClass = USB_CLASS_VIDEO,
2915 .bInterfaceSubClass = 1,
2916 .bInterfaceProtocol = 0,
2917 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2918 /* Syntek (Packard Bell EasyNote MX52 */
2919 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2920 | USB_DEVICE_ID_MATCH_INT_INFO,
2921 .idVendor = 0x174f,
2922 .idProduct = 0x8a12,
2923 .bInterfaceClass = USB_CLASS_VIDEO,
2924 .bInterfaceSubClass = 1,
2925 .bInterfaceProtocol = 0,
2926 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2927 /* Syntek (Asus F9SG) */
2928 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2929 | USB_DEVICE_ID_MATCH_INT_INFO,
2930 .idVendor = 0x174f,
2931 .idProduct = 0x8a31,
2932 .bInterfaceClass = USB_CLASS_VIDEO,
2933 .bInterfaceSubClass = 1,
2934 .bInterfaceProtocol = 0,
2935 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2936 /* Syntek (Asus U3S) */
2937 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2938 | USB_DEVICE_ID_MATCH_INT_INFO,
2939 .idVendor = 0x174f,
2940 .idProduct = 0x8a33,
2941 .bInterfaceClass = USB_CLASS_VIDEO,
2942 .bInterfaceSubClass = 1,
2943 .bInterfaceProtocol = 0,
2944 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2945 /* Syntek (JAOtech Smart Terminal) */
2946 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2947 | USB_DEVICE_ID_MATCH_INT_INFO,
2948 .idVendor = 0x174f,
2949 .idProduct = 0x8a34,
2950 .bInterfaceClass = USB_CLASS_VIDEO,
2951 .bInterfaceSubClass = 1,
2952 .bInterfaceProtocol = 0,
2953 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2954 /* Miricle 307K */
2955 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2956 | USB_DEVICE_ID_MATCH_INT_INFO,
2957 .idVendor = 0x17dc,
2958 .idProduct = 0x0202,
2959 .bInterfaceClass = USB_CLASS_VIDEO,
2960 .bInterfaceSubClass = 1,
2961 .bInterfaceProtocol = 0,
2962 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2963 /* Lenovo Thinkpad SL400/SL500 */
2964 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2965 | USB_DEVICE_ID_MATCH_INT_INFO,
2966 .idVendor = 0x17ef,
2967 .idProduct = 0x480b,
2968 .bInterfaceClass = USB_CLASS_VIDEO,
2969 .bInterfaceSubClass = 1,
2970 .bInterfaceProtocol = 0,
2971 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2972 /* Aveo Technology USB 2.0 Camera */
2973 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2974 | USB_DEVICE_ID_MATCH_INT_INFO,
2975 .idVendor = 0x1871,
2976 .idProduct = 0x0306,
2977 .bInterfaceClass = USB_CLASS_VIDEO,
2978 .bInterfaceSubClass = 1,
2979 .bInterfaceProtocol = 0,
2980 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2981 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2982 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2983 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2984 | USB_DEVICE_ID_MATCH_INT_INFO,
2985 .idVendor = 0x1871,
2986 .idProduct = 0x0516,
2987 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2988 .bInterfaceSubClass = 1,
2989 .bInterfaceProtocol = 0 },
2990 /* Ecamm Pico iMage */
2991 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2992 | USB_DEVICE_ID_MATCH_INT_INFO,
2993 .idVendor = 0x18cd,
2994 .idProduct = 0xcafe,
2995 .bInterfaceClass = USB_CLASS_VIDEO,
2996 .bInterfaceSubClass = 1,
2997 .bInterfaceProtocol = 0,
2998 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2999 /* Manta MM-353 Plako */
3000 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3001 | USB_DEVICE_ID_MATCH_INT_INFO,
3002 .idVendor = 0x18ec,
3003 .idProduct = 0x3188,
3004 .bInterfaceClass = USB_CLASS_VIDEO,
3005 .bInterfaceSubClass = 1,
3006 .bInterfaceProtocol = 0,
3007 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3008 /* FSC WebCam V30S */
3009 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3010 | USB_DEVICE_ID_MATCH_INT_INFO,
3011 .idVendor = 0x18ec,
3012 .idProduct = 0x3288,
3013 .bInterfaceClass = USB_CLASS_VIDEO,
3014 .bInterfaceSubClass = 1,
3015 .bInterfaceProtocol = 0,
3016 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3017 /* Arkmicro unbranded */
3018 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3019 | USB_DEVICE_ID_MATCH_INT_INFO,
3020 .idVendor = 0x18ec,
3021 .idProduct = 0x3290,
3022 .bInterfaceClass = USB_CLASS_VIDEO,
3023 .bInterfaceSubClass = 1,
3024 .bInterfaceProtocol = 0,
3025 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
3026 /* The Imaging Source USB CCD cameras */
3027 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3028 | USB_DEVICE_ID_MATCH_INT_INFO,
3029 .idVendor = 0x199e,
3030 .idProduct = 0x8102,
3031 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3032 .bInterfaceSubClass = 1,
3033 .bInterfaceProtocol = 0 },
3034 /* Bodelin ProScopeHR */
3035 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3036 | USB_DEVICE_ID_MATCH_DEV_HI
3037 | USB_DEVICE_ID_MATCH_INT_INFO,
3038 .idVendor = 0x19ab,
3039 .idProduct = 0x1000,
3040 .bcdDevice_hi = 0x0126,
3041 .bInterfaceClass = USB_CLASS_VIDEO,
3042 .bInterfaceSubClass = 1,
3043 .bInterfaceProtocol = 0,
3044 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
3045 /* MSI StarCam 370i */
3046 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3047 | USB_DEVICE_ID_MATCH_INT_INFO,
3048 .idVendor = 0x1b3b,
3049 .idProduct = 0x2951,
3050 .bInterfaceClass = USB_CLASS_VIDEO,
3051 .bInterfaceSubClass = 1,
3052 .bInterfaceProtocol = 0,
3053 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3054 /* Generalplus Technology Inc. 808 Camera */
3055 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3056 | USB_DEVICE_ID_MATCH_INT_INFO,
3057 .idVendor = 0x1b3f,
3058 .idProduct = 0x2002,
3059 .bInterfaceClass = USB_CLASS_VIDEO,
3060 .bInterfaceSubClass = 1,
3061 .bInterfaceProtocol = 0,
3062 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3063 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */
3064 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3065 | USB_DEVICE_ID_MATCH_INT_INFO,
3066 .idVendor = 0x1bcf,
3067 .idProduct = 0x0b40,
3068 .bInterfaceClass = USB_CLASS_VIDEO,
3069 .bInterfaceSubClass = 1,
3070 .bInterfaceProtocol = 0,
3071 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
3072 .uvc_version = 0x010a,
3073 } },
3074 /* SiGma Micro USB Web Camera */
3075 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3076 | USB_DEVICE_ID_MATCH_INT_INFO,
3077 .idVendor = 0x1c4f,
3078 .idProduct = 0x3000,
3079 .bInterfaceClass = USB_CLASS_VIDEO,
3080 .bInterfaceSubClass = 1,
3081 .bInterfaceProtocol = 0,
3082 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
3083 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
3084 /* Actions Microelectronics Co. Display capture-UVC05 */
3085 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3086 | USB_DEVICE_ID_MATCH_INT_INFO,
3087 .idVendor = 0x1de1,
3088 .idProduct = 0xf105,
3089 .bInterfaceClass = USB_CLASS_VIDEO,
3090 .bInterfaceSubClass = 1,
3091 .bInterfaceProtocol = 0,
3092 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
3093 /* NXP Semiconductors IR VIDEO */
3094 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3095 | USB_DEVICE_ID_MATCH_INT_INFO,
3096 .idVendor = 0x1fc9,
3097 .idProduct = 0x009b,
3098 .bInterfaceClass = USB_CLASS_VIDEO,
3099 .bInterfaceSubClass = 1,
3100 .bInterfaceProtocol = 0,
3101 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3102 /* Oculus VR Positional Tracker DK2 */
3103 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3104 | USB_DEVICE_ID_MATCH_INT_INFO,
3105 .idVendor = 0x2833,
3106 .idProduct = 0x0201,
3107 .bInterfaceClass = USB_CLASS_VIDEO,
3108 .bInterfaceSubClass = 1,
3109 .bInterfaceProtocol = 0,
3110 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3111 /* Oculus VR Rift Sensor */
3112 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3113 | USB_DEVICE_ID_MATCH_INT_INFO,
3114 .idVendor = 0x2833,
3115 .idProduct = 0x0211,
3116 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3117 .bInterfaceSubClass = 1,
3118 .bInterfaceProtocol = 0,
3119 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3120 /* GEO Semiconductor GC6500 */
3121 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3122 | USB_DEVICE_ID_MATCH_INT_INFO,
3123 .idVendor = 0x29fe,
3124 .idProduct = 0x4d53,
3125 .bInterfaceClass = USB_CLASS_VIDEO,
3126 .bInterfaceSubClass = 1,
3127 .bInterfaceProtocol = 0,
3128 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3129 /* Insta360 Link */
3130 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3131 | USB_DEVICE_ID_MATCH_INT_INFO,
3132 .idVendor = 0x2e1a,
3133 .idProduct = 0x4c01,
3134 .bInterfaceClass = USB_CLASS_VIDEO,
3135 .bInterfaceSubClass = 1,
3136 .bInterfaceProtocol = 0,
3137 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
3138 /* Intel D410/ASR depth camera */
3139 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3140 | USB_DEVICE_ID_MATCH_INT_INFO,
3141 .idVendor = 0x8086,
3142 .idProduct = 0x0ad2,
3143 .bInterfaceClass = USB_CLASS_VIDEO,
3144 .bInterfaceSubClass = 1,
3145 .bInterfaceProtocol = 0,
3146 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3147 /* Intel D415/ASRC depth camera */
3148 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3149 | USB_DEVICE_ID_MATCH_INT_INFO,
3150 .idVendor = 0x8086,
3151 .idProduct = 0x0ad3,
3152 .bInterfaceClass = USB_CLASS_VIDEO,
3153 .bInterfaceSubClass = 1,
3154 .bInterfaceProtocol = 0,
3155 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3156 /* Intel D430/AWG depth camera */
3157 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3158 | USB_DEVICE_ID_MATCH_INT_INFO,
3159 .idVendor = 0x8086,
3160 .idProduct = 0x0ad4,
3161 .bInterfaceClass = USB_CLASS_VIDEO,
3162 .bInterfaceSubClass = 1,
3163 .bInterfaceProtocol = 0,
3164 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3165 /* Intel RealSense D4M */
3166 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3167 | USB_DEVICE_ID_MATCH_INT_INFO,
3168 .idVendor = 0x8086,
3169 .idProduct = 0x0b03,
3170 .bInterfaceClass = USB_CLASS_VIDEO,
3171 .bInterfaceSubClass = 1,
3172 .bInterfaceProtocol = 0,
3173 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3174 /* Intel D435/AWGC depth camera */
3175 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3176 | USB_DEVICE_ID_MATCH_INT_INFO,
3177 .idVendor = 0x8086,
3178 .idProduct = 0x0b07,
3179 .bInterfaceClass = USB_CLASS_VIDEO,
3180 .bInterfaceSubClass = 1,
3181 .bInterfaceProtocol = 0,
3182 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3183 /* Intel D435i depth camera */
3184 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3185 | USB_DEVICE_ID_MATCH_INT_INFO,
3186 .idVendor = 0x8086,
3187 .idProduct = 0x0b3a,
3188 .bInterfaceClass = USB_CLASS_VIDEO,
3189 .bInterfaceSubClass = 1,
3190 .bInterfaceProtocol = 0,
3191 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3192 /* Intel D405 Depth Camera */
3193 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3194 | USB_DEVICE_ID_MATCH_INT_INFO,
3195 .idVendor = 0x8086,
3196 .idProduct = 0x0b5b,
3197 .bInterfaceClass = USB_CLASS_VIDEO,
3198 .bInterfaceSubClass = 1,
3199 .bInterfaceProtocol = 0,
3200 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3201 /* Intel D455 Depth Camera */
3202 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3203 | USB_DEVICE_ID_MATCH_INT_INFO,
3204 .idVendor = 0x8086,
3205 .idProduct = 0x0b5c,
3206 .bInterfaceClass = USB_CLASS_VIDEO,
3207 .bInterfaceSubClass = 1,
3208 .bInterfaceProtocol = 0,
3209 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3210 /* Intel D421 Depth Module */
3211 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3212 | USB_DEVICE_ID_MATCH_INT_INFO,
3213 .idVendor = 0x8086,
3214 .idProduct = 0x1155,
3215 .bInterfaceClass = USB_CLASS_VIDEO,
3216 .bInterfaceSubClass = 1,
3217 .bInterfaceProtocol = 0,
3218 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3219 /* Generic USB Video Class */
3220 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3221 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3222 {}
3223 };
3224
3225 MODULE_DEVICE_TABLE(usb, uvc_ids);
3226
3227 struct uvc_driver uvc_driver = {
3228 .driver = {
3229 .name = "uvcvideo",
3230 .probe = uvc_probe,
3231 .disconnect = uvc_disconnect,
3232 .suspend = uvc_suspend,
3233 .resume = uvc_resume,
3234 .reset_resume = uvc_reset_resume,
3235 .id_table = uvc_ids,
3236 .supports_autosuspend = 1,
3237 },
3238 };
3239
uvc_init(void)3240 static int __init uvc_init(void)
3241 {
3242 int ret;
3243
3244 uvc_debugfs_init();
3245
3246 ret = usb_register(&uvc_driver.driver);
3247 if (ret < 0) {
3248 uvc_debugfs_cleanup();
3249 return ret;
3250 }
3251
3252 return 0;
3253 }
3254
uvc_cleanup(void)3255 static void __exit uvc_cleanup(void)
3256 {
3257 usb_deregister(&uvc_driver.driver);
3258 uvc_debugfs_cleanup();
3259 }
3260
3261 module_init(uvc_init);
3262 module_exit(uvc_cleanup);
3263
3264 MODULE_AUTHOR(DRIVER_AUTHOR);
3265 MODULE_DESCRIPTION(DRIVER_DESC);
3266 MODULE_LICENSE("GPL");
3267 MODULE_VERSION(DRIVER_VERSION);
3268
3269