1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * uvc_driver.c -- USB Video Class driver
4 *
5 * Copyright (C) 2005-2010
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 */
8
9 #include <linux/atomic.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/kernel.h>
12 #include <linux/list.h>
13 #include <linux/module.h>
14 #include <linux/slab.h>
15 #include <linux/usb.h>
16 #include <linux/videodev2.h>
17 #include <linux/vmalloc.h>
18 #include <linux/wait.h>
19 #include <asm/unaligned.h>
20
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-ioctl.h>
23 #include <media/v4l2-uvc.h>
24
25 #include "uvcvideo.h"
26
27 #define DRIVER_AUTHOR "Laurent Pinchart " \
28 "<laurent.pinchart@ideasonboard.com>"
29 #define DRIVER_DESC "USB Video Class driver"
30
31 unsigned int uvc_clock_param = CLOCK_MONOTONIC;
32 unsigned int uvc_hw_timestamps_param;
33 unsigned int uvc_no_drop_param;
34 static unsigned int uvc_quirks_param = -1;
35 unsigned int uvc_dbg_param;
36 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
37
38 /* ------------------------------------------------------------------------
39 * Utility functions
40 */
41
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)42 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
43 u8 epaddr)
44 {
45 struct usb_host_endpoint *ep;
46 unsigned int i;
47
48 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
49 ep = &alts->endpoint[i];
50 if (ep->desc.bEndpointAddress == epaddr)
51 return ep;
52 }
53
54 return NULL;
55 }
56
uvc_colorspace(const u8 primaries)57 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
58 {
59 static const enum v4l2_colorspace colorprimaries[] = {
60 V4L2_COLORSPACE_SRGB, /* Unspecified */
61 V4L2_COLORSPACE_SRGB,
62 V4L2_COLORSPACE_470_SYSTEM_M,
63 V4L2_COLORSPACE_470_SYSTEM_BG,
64 V4L2_COLORSPACE_SMPTE170M,
65 V4L2_COLORSPACE_SMPTE240M,
66 };
67
68 if (primaries < ARRAY_SIZE(colorprimaries))
69 return colorprimaries[primaries];
70
71 return V4L2_COLORSPACE_SRGB; /* Reserved */
72 }
73
uvc_xfer_func(const u8 transfer_characteristics)74 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
75 {
76 /*
77 * V4L2 does not currently have definitions for all possible values of
78 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
79 * values, the mapping below should be updated.
80 *
81 * Substitutions are taken from the mapping given for
82 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
83 */
84 static const enum v4l2_xfer_func xfer_funcs[] = {
85 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
86 V4L2_XFER_FUNC_709,
87 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
88 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
89 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
90 V4L2_XFER_FUNC_SMPTE240M,
91 V4L2_XFER_FUNC_NONE,
92 V4L2_XFER_FUNC_SRGB,
93 };
94
95 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
96 return xfer_funcs[transfer_characteristics];
97
98 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
99 }
100
uvc_ycbcr_enc(const u8 matrix_coefficients)101 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
102 {
103 /*
104 * V4L2 does not currently have definitions for all possible values of
105 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
106 * values, the mapping below should be updated.
107 *
108 * Substitutions are taken from the mapping given for
109 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
110 *
111 * FCC is assumed to be close enough to 601.
112 */
113 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
114 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
115 V4L2_YCBCR_ENC_709,
116 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
117 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
118 V4L2_YCBCR_ENC_601,
119 V4L2_YCBCR_ENC_SMPTE240M,
120 };
121
122 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
123 return ycbcr_encs[matrix_coefficients];
124
125 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
126 }
127
128 /* ------------------------------------------------------------------------
129 * Terminal and unit management
130 */
131
uvc_entity_by_id(struct uvc_device * dev,int id)132 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
133 {
134 struct uvc_entity *entity;
135
136 list_for_each_entry(entity, &dev->entities, list) {
137 if (entity->id == id)
138 return entity;
139 }
140
141 return NULL;
142 }
143
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)144 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
145 int id, struct uvc_entity *entity)
146 {
147 unsigned int i;
148
149 if (entity == NULL)
150 entity = list_entry(&dev->entities, struct uvc_entity, list);
151
152 list_for_each_entry_continue(entity, &dev->entities, list) {
153 for (i = 0; i < entity->bNrInPins; ++i)
154 if (entity->baSourceID[i] == id)
155 return entity;
156 }
157
158 return NULL;
159 }
160
uvc_stream_by_id(struct uvc_device * dev,int id)161 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
162 {
163 struct uvc_streaming *stream;
164
165 list_for_each_entry(stream, &dev->streams, list) {
166 if (stream->header.bTerminalLink == id)
167 return stream;
168 }
169
170 return NULL;
171 }
172
173 /* ------------------------------------------------------------------------
174 * Streaming Object Management
175 */
176
uvc_stream_delete(struct uvc_streaming * stream)177 static void uvc_stream_delete(struct uvc_streaming *stream)
178 {
179 if (stream->async_wq)
180 destroy_workqueue(stream->async_wq);
181
182 mutex_destroy(&stream->mutex);
183
184 usb_put_intf(stream->intf);
185
186 kfree(stream->format);
187 kfree(stream->header.bmaControls);
188 kfree(stream);
189 }
190
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)191 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
192 struct usb_interface *intf)
193 {
194 struct uvc_streaming *stream;
195
196 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
197 if (stream == NULL)
198 return NULL;
199
200 mutex_init(&stream->mutex);
201
202 stream->dev = dev;
203 stream->intf = usb_get_intf(intf);
204 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
205
206 /* Allocate a stream specific work queue for asynchronous tasks. */
207 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
208 0);
209 if (!stream->async_wq) {
210 uvc_stream_delete(stream);
211 return NULL;
212 }
213
214 return stream;
215 }
216
217 /* ------------------------------------------------------------------------
218 * Descriptors parsing
219 */
220
uvc_parse_format(struct uvc_device * dev,struct uvc_streaming * streaming,struct uvc_format * format,u32 ** intervals,unsigned char * buffer,int buflen)221 static int uvc_parse_format(struct uvc_device *dev,
222 struct uvc_streaming *streaming, struct uvc_format *format,
223 u32 **intervals, unsigned char *buffer, int buflen)
224 {
225 struct usb_interface *intf = streaming->intf;
226 struct usb_host_interface *alts = intf->cur_altsetting;
227 struct uvc_format_desc *fmtdesc;
228 struct uvc_frame *frame;
229 const unsigned char *start = buffer;
230 unsigned int width_multiplier = 1;
231 unsigned int interval;
232 unsigned int i, n;
233 u8 ftype;
234
235 format->type = buffer[2];
236 format->index = buffer[3];
237
238 switch (buffer[2]) {
239 case UVC_VS_FORMAT_UNCOMPRESSED:
240 case UVC_VS_FORMAT_FRAME_BASED:
241 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
242 if (buflen < n) {
243 uvc_dbg(dev, DESCR,
244 "device %d videostreaming interface %d FORMAT error\n",
245 dev->udev->devnum,
246 alts->desc.bInterfaceNumber);
247 return -EINVAL;
248 }
249
250 /* Find the format descriptor from its GUID. */
251 fmtdesc = uvc_format_by_guid(&buffer[5]);
252
253 if (fmtdesc != NULL) {
254 strscpy(format->name, fmtdesc->name,
255 sizeof(format->name));
256 format->fcc = fmtdesc->fcc;
257 } else {
258 dev_info(&streaming->intf->dev,
259 "Unknown video format %pUl\n", &buffer[5]);
260 snprintf(format->name, sizeof(format->name), "%pUl\n",
261 &buffer[5]);
262 format->fcc = 0;
263 }
264
265 format->bpp = buffer[21];
266
267 /*
268 * Some devices report a format that doesn't match what they
269 * really send.
270 */
271 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
272 if (format->fcc == V4L2_PIX_FMT_YUYV) {
273 strscpy(format->name, "Greyscale 8-bit (Y8 )",
274 sizeof(format->name));
275 format->fcc = V4L2_PIX_FMT_GREY;
276 format->bpp = 8;
277 width_multiplier = 2;
278 }
279 }
280
281 /* Some devices report bpp that doesn't match the format. */
282 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
283 const struct v4l2_format_info *info =
284 v4l2_format_info(format->fcc);
285
286 if (info) {
287 unsigned int div = info->hdiv * info->vdiv;
288
289 n = info->bpp[0] * div;
290 for (i = 1; i < info->comp_planes; i++)
291 n += info->bpp[i];
292
293 format->bpp = DIV_ROUND_UP(8 * n, div);
294 }
295 }
296
297 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
298 ftype = UVC_VS_FRAME_UNCOMPRESSED;
299 } else {
300 ftype = UVC_VS_FRAME_FRAME_BASED;
301 if (buffer[27])
302 format->flags = UVC_FMT_FLAG_COMPRESSED;
303 }
304 break;
305
306 case UVC_VS_FORMAT_MJPEG:
307 if (buflen < 11) {
308 uvc_dbg(dev, DESCR,
309 "device %d videostreaming interface %d FORMAT error\n",
310 dev->udev->devnum,
311 alts->desc.bInterfaceNumber);
312 return -EINVAL;
313 }
314
315 strscpy(format->name, "MJPEG", sizeof(format->name));
316 format->fcc = V4L2_PIX_FMT_MJPEG;
317 format->flags = UVC_FMT_FLAG_COMPRESSED;
318 format->bpp = 0;
319 ftype = UVC_VS_FRAME_MJPEG;
320 break;
321
322 case UVC_VS_FORMAT_DV:
323 if (buflen < 9) {
324 uvc_dbg(dev, DESCR,
325 "device %d videostreaming interface %d FORMAT error\n",
326 dev->udev->devnum,
327 alts->desc.bInterfaceNumber);
328 return -EINVAL;
329 }
330
331 switch (buffer[8] & 0x7f) {
332 case 0:
333 strscpy(format->name, "SD-DV", sizeof(format->name));
334 break;
335 case 1:
336 strscpy(format->name, "SDL-DV", sizeof(format->name));
337 break;
338 case 2:
339 strscpy(format->name, "HD-DV", sizeof(format->name));
340 break;
341 default:
342 uvc_dbg(dev, DESCR,
343 "device %d videostreaming interface %d: unknown DV format %u\n",
344 dev->udev->devnum,
345 alts->desc.bInterfaceNumber, buffer[8]);
346 return -EINVAL;
347 }
348
349 strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz",
350 sizeof(format->name));
351
352 format->fcc = V4L2_PIX_FMT_DV;
353 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
354 format->bpp = 0;
355 ftype = 0;
356
357 /* Create a dummy frame descriptor. */
358 frame = &format->frame[0];
359 memset(&format->frame[0], 0, sizeof(format->frame[0]));
360 frame->bFrameIntervalType = 1;
361 frame->dwDefaultFrameInterval = 1;
362 frame->dwFrameInterval = *intervals;
363 *(*intervals)++ = 1;
364 format->nframes = 1;
365 break;
366
367 case UVC_VS_FORMAT_MPEG2TS:
368 case UVC_VS_FORMAT_STREAM_BASED:
369 /* Not supported yet. */
370 default:
371 uvc_dbg(dev, DESCR,
372 "device %d videostreaming interface %d unsupported format %u\n",
373 dev->udev->devnum, alts->desc.bInterfaceNumber,
374 buffer[2]);
375 return -EINVAL;
376 }
377
378 uvc_dbg(dev, DESCR, "Found format %s\n", format->name);
379
380 buflen -= buffer[0];
381 buffer += buffer[0];
382
383 /*
384 * Parse the frame descriptors. Only uncompressed, MJPEG and frame
385 * based formats have frame descriptors.
386 */
387 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
388 buffer[2] == ftype) {
389 frame = &format->frame[format->nframes];
390 if (ftype != UVC_VS_FRAME_FRAME_BASED)
391 n = buflen > 25 ? buffer[25] : 0;
392 else
393 n = buflen > 21 ? buffer[21] : 0;
394
395 n = n ? n : 3;
396
397 if (buflen < 26 + 4*n) {
398 uvc_dbg(dev, DESCR,
399 "device %d videostreaming interface %d FRAME error\n",
400 dev->udev->devnum,
401 alts->desc.bInterfaceNumber);
402 return -EINVAL;
403 }
404
405 frame->bFrameIndex = buffer[3];
406 frame->bmCapabilities = buffer[4];
407 frame->wWidth = get_unaligned_le16(&buffer[5])
408 * width_multiplier;
409 frame->wHeight = get_unaligned_le16(&buffer[7]);
410 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
411 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
412 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
413 frame->dwMaxVideoFrameBufferSize =
414 get_unaligned_le32(&buffer[17]);
415 frame->dwDefaultFrameInterval =
416 get_unaligned_le32(&buffer[21]);
417 frame->bFrameIntervalType = buffer[25];
418 } else {
419 frame->dwMaxVideoFrameBufferSize = 0;
420 frame->dwDefaultFrameInterval =
421 get_unaligned_le32(&buffer[17]);
422 frame->bFrameIntervalType = buffer[21];
423 }
424 frame->dwFrameInterval = *intervals;
425
426 /*
427 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize
428 * completely. Observed behaviours range from setting the
429 * value to 1.1x the actual frame size to hardwiring the
430 * 16 low bits to 0. This results in a higher than necessary
431 * memory usage as well as a wrong image size information. For
432 * uncompressed formats this can be fixed by computing the
433 * value from the frame size.
434 */
435 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
436 frame->dwMaxVideoFrameBufferSize = format->bpp
437 * frame->wWidth * frame->wHeight / 8;
438
439 /*
440 * Some bogus devices report dwMinFrameInterval equal to
441 * dwMaxFrameInterval and have dwFrameIntervalStep set to
442 * zero. Setting all null intervals to 1 fixes the problem and
443 * some other divisions by zero that could happen.
444 */
445 for (i = 0; i < n; ++i) {
446 interval = get_unaligned_le32(&buffer[26+4*i]);
447 *(*intervals)++ = interval ? interval : 1;
448 }
449
450 /*
451 * Make sure that the default frame interval stays between
452 * the boundaries.
453 */
454 n -= frame->bFrameIntervalType ? 1 : 2;
455 frame->dwDefaultFrameInterval =
456 min(frame->dwFrameInterval[n],
457 max(frame->dwFrameInterval[0],
458 frame->dwDefaultFrameInterval));
459
460 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
461 frame->bFrameIntervalType = 1;
462 frame->dwFrameInterval[0] =
463 frame->dwDefaultFrameInterval;
464 }
465
466 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
467 frame->wWidth, frame->wHeight,
468 10000000 / frame->dwDefaultFrameInterval,
469 (100000000 / frame->dwDefaultFrameInterval) % 10);
470
471 format->nframes++;
472 buflen -= buffer[0];
473 buffer += buffer[0];
474 }
475
476 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
477 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
478 buflen -= buffer[0];
479 buffer += buffer[0];
480 }
481
482 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
483 buffer[2] == UVC_VS_COLORFORMAT) {
484 if (buflen < 6) {
485 uvc_dbg(dev, DESCR,
486 "device %d videostreaming interface %d COLORFORMAT error\n",
487 dev->udev->devnum,
488 alts->desc.bInterfaceNumber);
489 return -EINVAL;
490 }
491
492 format->colorspace = uvc_colorspace(buffer[3]);
493 format->xfer_func = uvc_xfer_func(buffer[4]);
494 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
495
496 buflen -= buffer[0];
497 buffer += buffer[0];
498 } else {
499 format->colorspace = V4L2_COLORSPACE_SRGB;
500 }
501
502 return buffer - start;
503 }
504
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)505 static int uvc_parse_streaming(struct uvc_device *dev,
506 struct usb_interface *intf)
507 {
508 struct uvc_streaming *streaming = NULL;
509 struct uvc_format *format;
510 struct uvc_frame *frame;
511 struct usb_host_interface *alts = &intf->altsetting[0];
512 unsigned char *_buffer, *buffer = alts->extra;
513 int _buflen, buflen = alts->extralen;
514 unsigned int nformats = 0, nframes = 0, nintervals = 0;
515 unsigned int size, i, n, p;
516 u32 *interval;
517 u16 psize;
518 int ret = -EINVAL;
519
520 if (intf->cur_altsetting->desc.bInterfaceSubClass
521 != UVC_SC_VIDEOSTREAMING) {
522 uvc_dbg(dev, DESCR,
523 "device %d interface %d isn't a video streaming interface\n",
524 dev->udev->devnum,
525 intf->altsetting[0].desc.bInterfaceNumber);
526 return -EINVAL;
527 }
528
529 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
530 uvc_dbg(dev, DESCR,
531 "device %d interface %d is already claimed\n",
532 dev->udev->devnum,
533 intf->altsetting[0].desc.bInterfaceNumber);
534 return -EINVAL;
535 }
536
537 streaming = uvc_stream_new(dev, intf);
538 if (streaming == NULL) {
539 usb_driver_release_interface(&uvc_driver.driver, intf);
540 return -ENOMEM;
541 }
542
543 /*
544 * The Pico iMage webcam has its class-specific interface descriptors
545 * after the endpoint descriptors.
546 */
547 if (buflen == 0) {
548 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
549 struct usb_host_endpoint *ep = &alts->endpoint[i];
550
551 if (ep->extralen == 0)
552 continue;
553
554 if (ep->extralen > 2 &&
555 ep->extra[1] == USB_DT_CS_INTERFACE) {
556 uvc_dbg(dev, DESCR,
557 "trying extra data from endpoint %u\n",
558 i);
559 buffer = alts->endpoint[i].extra;
560 buflen = alts->endpoint[i].extralen;
561 break;
562 }
563 }
564 }
565
566 /* Skip the standard interface descriptors. */
567 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
568 buflen -= buffer[0];
569 buffer += buffer[0];
570 }
571
572 if (buflen <= 2) {
573 uvc_dbg(dev, DESCR,
574 "no class-specific streaming interface descriptors found\n");
575 goto error;
576 }
577
578 /* Parse the header descriptor. */
579 switch (buffer[2]) {
580 case UVC_VS_OUTPUT_HEADER:
581 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
582 size = 9;
583 break;
584
585 case UVC_VS_INPUT_HEADER:
586 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
587 size = 13;
588 break;
589
590 default:
591 uvc_dbg(dev, DESCR,
592 "device %d videostreaming interface %d HEADER descriptor not found\n",
593 dev->udev->devnum, alts->desc.bInterfaceNumber);
594 goto error;
595 }
596
597 p = buflen >= 4 ? buffer[3] : 0;
598 n = buflen >= size ? buffer[size-1] : 0;
599
600 if (buflen < size + p*n) {
601 uvc_dbg(dev, DESCR,
602 "device %d videostreaming interface %d HEADER descriptor is invalid\n",
603 dev->udev->devnum, alts->desc.bInterfaceNumber);
604 goto error;
605 }
606
607 streaming->header.bNumFormats = p;
608 streaming->header.bEndpointAddress = buffer[6];
609 if (buffer[2] == UVC_VS_INPUT_HEADER) {
610 streaming->header.bmInfo = buffer[7];
611 streaming->header.bTerminalLink = buffer[8];
612 streaming->header.bStillCaptureMethod = buffer[9];
613 streaming->header.bTriggerSupport = buffer[10];
614 streaming->header.bTriggerUsage = buffer[11];
615 } else {
616 streaming->header.bTerminalLink = buffer[7];
617 }
618 streaming->header.bControlSize = n;
619
620 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
621 GFP_KERNEL);
622 if (streaming->header.bmaControls == NULL) {
623 ret = -ENOMEM;
624 goto error;
625 }
626
627 buflen -= buffer[0];
628 buffer += buffer[0];
629
630 _buffer = buffer;
631 _buflen = buflen;
632
633 /* Count the format and frame descriptors. */
634 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
635 switch (_buffer[2]) {
636 case UVC_VS_FORMAT_UNCOMPRESSED:
637 case UVC_VS_FORMAT_MJPEG:
638 case UVC_VS_FORMAT_FRAME_BASED:
639 nformats++;
640 break;
641
642 case UVC_VS_FORMAT_DV:
643 /*
644 * DV format has no frame descriptor. We will create a
645 * dummy frame descriptor with a dummy frame interval.
646 */
647 nformats++;
648 nframes++;
649 nintervals++;
650 break;
651
652 case UVC_VS_FORMAT_MPEG2TS:
653 case UVC_VS_FORMAT_STREAM_BASED:
654 uvc_dbg(dev, DESCR,
655 "device %d videostreaming interface %d FORMAT %u is not supported\n",
656 dev->udev->devnum,
657 alts->desc.bInterfaceNumber, _buffer[2]);
658 break;
659
660 case UVC_VS_FRAME_UNCOMPRESSED:
661 case UVC_VS_FRAME_MJPEG:
662 nframes++;
663 if (_buflen > 25)
664 nintervals += _buffer[25] ? _buffer[25] : 3;
665 break;
666
667 case UVC_VS_FRAME_FRAME_BASED:
668 nframes++;
669 if (_buflen > 21)
670 nintervals += _buffer[21] ? _buffer[21] : 3;
671 break;
672 }
673
674 _buflen -= _buffer[0];
675 _buffer += _buffer[0];
676 }
677
678 if (nformats == 0) {
679 uvc_dbg(dev, DESCR,
680 "device %d videostreaming interface %d has no supported formats defined\n",
681 dev->udev->devnum, alts->desc.bInterfaceNumber);
682 goto error;
683 }
684
685 size = nformats * sizeof(*format) + nframes * sizeof(*frame)
686 + nintervals * sizeof(*interval);
687 format = kzalloc(size, GFP_KERNEL);
688 if (format == NULL) {
689 ret = -ENOMEM;
690 goto error;
691 }
692
693 frame = (struct uvc_frame *)&format[nformats];
694 interval = (u32 *)&frame[nframes];
695
696 streaming->format = format;
697 streaming->nformats = nformats;
698
699 /* Parse the format descriptors. */
700 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
701 switch (buffer[2]) {
702 case UVC_VS_FORMAT_UNCOMPRESSED:
703 case UVC_VS_FORMAT_MJPEG:
704 case UVC_VS_FORMAT_DV:
705 case UVC_VS_FORMAT_FRAME_BASED:
706 format->frame = frame;
707 ret = uvc_parse_format(dev, streaming, format,
708 &interval, buffer, buflen);
709 if (ret < 0)
710 goto error;
711
712 frame += format->nframes;
713 format++;
714
715 buflen -= ret;
716 buffer += ret;
717 continue;
718
719 default:
720 break;
721 }
722
723 buflen -= buffer[0];
724 buffer += buffer[0];
725 }
726
727 if (buflen)
728 uvc_dbg(dev, DESCR,
729 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
730 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
731
732 /* Parse the alternate settings to find the maximum bandwidth. */
733 for (i = 0; i < intf->num_altsetting; ++i) {
734 struct usb_host_endpoint *ep;
735 alts = &intf->altsetting[i];
736 ep = uvc_find_endpoint(alts,
737 streaming->header.bEndpointAddress);
738 if (ep == NULL)
739 continue;
740 psize = uvc_endpoint_max_bpi(dev->udev, ep);
741 if (psize > streaming->maxpsize)
742 streaming->maxpsize = psize;
743 }
744
745 list_add_tail(&streaming->list, &dev->streams);
746 return 0;
747
748 error:
749 usb_driver_release_interface(&uvc_driver.driver, intf);
750 uvc_stream_delete(streaming);
751 return ret;
752 }
753
754 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
755 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER;
756 static const u8 uvc_media_transport_input_guid[16] =
757 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
758 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
759
uvc_alloc_entity(u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)760 static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id,
761 unsigned int num_pads, unsigned int extra_size)
762 {
763 struct uvc_entity *entity;
764 unsigned int num_inputs;
765 unsigned int size;
766 unsigned int i;
767
768 extra_size = roundup(extra_size, sizeof(*entity->pads));
769 if (num_pads)
770 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
771 else
772 num_inputs = 0;
773 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
774 + num_inputs;
775 entity = kzalloc(size, GFP_KERNEL);
776 if (entity == NULL)
777 return NULL;
778
779 entity->id = id;
780 entity->type = type;
781
782 /*
783 * Set the GUID for standard entity types. For extension units, the GUID
784 * is initialized by the caller.
785 */
786 switch (type) {
787 case UVC_EXT_GPIO_UNIT:
788 memcpy(entity->guid, uvc_gpio_guid, 16);
789 break;
790 case UVC_ITT_CAMERA:
791 memcpy(entity->guid, uvc_camera_guid, 16);
792 break;
793 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
794 memcpy(entity->guid, uvc_media_transport_input_guid, 16);
795 break;
796 case UVC_VC_PROCESSING_UNIT:
797 memcpy(entity->guid, uvc_processing_guid, 16);
798 break;
799 }
800
801 entity->num_links = 0;
802 entity->num_pads = num_pads;
803 entity->pads = ((void *)(entity + 1)) + extra_size;
804
805 for (i = 0; i < num_inputs; ++i)
806 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
807 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
808 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
809
810 entity->bNrInPins = num_inputs;
811 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
812
813 return entity;
814 }
815
816 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)817 static int uvc_parse_vendor_control(struct uvc_device *dev,
818 const unsigned char *buffer, int buflen)
819 {
820 struct usb_device *udev = dev->udev;
821 struct usb_host_interface *alts = dev->intf->cur_altsetting;
822 struct uvc_entity *unit;
823 unsigned int n, p;
824 int handled = 0;
825
826 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
827 case 0x046d: /* Logitech */
828 if (buffer[1] != 0x41 || buffer[2] != 0x01)
829 break;
830
831 /*
832 * Logitech implements several vendor specific functions
833 * through vendor specific extension units (LXU).
834 *
835 * The LXU descriptors are similar to XU descriptors
836 * (see "USB Device Video Class for Video Devices", section
837 * 3.7.2.6 "Extension Unit Descriptor") with the following
838 * differences:
839 *
840 * ----------------------------------------------------------
841 * 0 bLength 1 Number
842 * Size of this descriptor, in bytes: 24+p+n*2
843 * ----------------------------------------------------------
844 * 23+p+n bmControlsType N Bitmap
845 * Individual bits in the set are defined:
846 * 0: Absolute
847 * 1: Relative
848 *
849 * This bitset is mapped exactly the same as bmControls.
850 * ----------------------------------------------------------
851 * 23+p+n*2 bReserved 1 Boolean
852 * ----------------------------------------------------------
853 * 24+p+n*2 iExtension 1 Index
854 * Index of a string descriptor that describes this
855 * extension unit.
856 * ----------------------------------------------------------
857 */
858 p = buflen >= 22 ? buffer[21] : 0;
859 n = buflen >= 25 + p ? buffer[22+p] : 0;
860
861 if (buflen < 25 + p + 2*n) {
862 uvc_dbg(dev, DESCR,
863 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
864 udev->devnum, alts->desc.bInterfaceNumber);
865 break;
866 }
867
868 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
869 p + 1, 2*n);
870 if (unit == NULL)
871 return -ENOMEM;
872
873 memcpy(unit->guid, &buffer[4], 16);
874 unit->extension.bNumControls = buffer[20];
875 memcpy(unit->baSourceID, &buffer[22], p);
876 unit->extension.bControlSize = buffer[22+p];
877 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
878 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
879 + n;
880 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
881
882 if (buffer[24+p+2*n] != 0)
883 usb_string(udev, buffer[24+p+2*n], unit->name,
884 sizeof(unit->name));
885 else
886 sprintf(unit->name, "Extension %u", buffer[3]);
887
888 list_add_tail(&unit->list, &dev->entities);
889 handled = 1;
890 break;
891 }
892
893 return handled;
894 }
895
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)896 static int uvc_parse_standard_control(struct uvc_device *dev,
897 const unsigned char *buffer, int buflen)
898 {
899 struct usb_device *udev = dev->udev;
900 struct uvc_entity *unit, *term;
901 struct usb_interface *intf;
902 struct usb_host_interface *alts = dev->intf->cur_altsetting;
903 unsigned int i, n, p, len;
904 u16 type;
905
906 switch (buffer[2]) {
907 case UVC_VC_HEADER:
908 n = buflen >= 12 ? buffer[11] : 0;
909
910 if (buflen < 12 + n) {
911 uvc_dbg(dev, DESCR,
912 "device %d videocontrol interface %d HEADER error\n",
913 udev->devnum, alts->desc.bInterfaceNumber);
914 return -EINVAL;
915 }
916
917 dev->uvc_version = get_unaligned_le16(&buffer[3]);
918 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
919
920 /* Parse all USB Video Streaming interfaces. */
921 for (i = 0; i < n; ++i) {
922 intf = usb_ifnum_to_if(udev, buffer[12+i]);
923 if (intf == NULL) {
924 uvc_dbg(dev, DESCR,
925 "device %d interface %d doesn't exists\n",
926 udev->devnum, i);
927 continue;
928 }
929
930 uvc_parse_streaming(dev, intf);
931 }
932 break;
933
934 case UVC_VC_INPUT_TERMINAL:
935 if (buflen < 8) {
936 uvc_dbg(dev, DESCR,
937 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
938 udev->devnum, alts->desc.bInterfaceNumber);
939 return -EINVAL;
940 }
941
942 /*
943 * Reject invalid terminal types that would cause issues:
944 *
945 * - The high byte must be non-zero, otherwise it would be
946 * confused with a unit.
947 *
948 * - Bit 15 must be 0, as we use it internally as a terminal
949 * direction flag.
950 *
951 * Other unknown types are accepted.
952 */
953 type = get_unaligned_le16(&buffer[4]);
954 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
955 uvc_dbg(dev, DESCR,
956 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
957 udev->devnum, alts->desc.bInterfaceNumber,
958 buffer[3], type);
959 return 0;
960 }
961
962 n = 0;
963 p = 0;
964 len = 8;
965
966 if (type == UVC_ITT_CAMERA) {
967 n = buflen >= 15 ? buffer[14] : 0;
968 len = 15;
969
970 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
971 n = buflen >= 9 ? buffer[8] : 0;
972 p = buflen >= 10 + n ? buffer[9+n] : 0;
973 len = 10;
974 }
975
976 if (buflen < len + n + p) {
977 uvc_dbg(dev, DESCR,
978 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
979 udev->devnum, alts->desc.bInterfaceNumber);
980 return -EINVAL;
981 }
982
983 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
984 1, n + p);
985 if (term == NULL)
986 return -ENOMEM;
987
988 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
989 term->camera.bControlSize = n;
990 term->camera.bmControls = (u8 *)term + sizeof(*term);
991 term->camera.wObjectiveFocalLengthMin =
992 get_unaligned_le16(&buffer[8]);
993 term->camera.wObjectiveFocalLengthMax =
994 get_unaligned_le16(&buffer[10]);
995 term->camera.wOcularFocalLength =
996 get_unaligned_le16(&buffer[12]);
997 memcpy(term->camera.bmControls, &buffer[15], n);
998 } else if (UVC_ENTITY_TYPE(term) ==
999 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1000 term->media.bControlSize = n;
1001 term->media.bmControls = (u8 *)term + sizeof(*term);
1002 term->media.bTransportModeSize = p;
1003 term->media.bmTransportModes = (u8 *)term
1004 + sizeof(*term) + n;
1005 memcpy(term->media.bmControls, &buffer[9], n);
1006 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1007 }
1008
1009 if (buffer[7] != 0)
1010 usb_string(udev, buffer[7], term->name,
1011 sizeof(term->name));
1012 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1013 sprintf(term->name, "Camera %u", buffer[3]);
1014 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1015 sprintf(term->name, "Media %u", buffer[3]);
1016 else
1017 sprintf(term->name, "Input %u", buffer[3]);
1018
1019 list_add_tail(&term->list, &dev->entities);
1020 break;
1021
1022 case UVC_VC_OUTPUT_TERMINAL:
1023 if (buflen < 9) {
1024 uvc_dbg(dev, DESCR,
1025 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
1026 udev->devnum, alts->desc.bInterfaceNumber);
1027 return -EINVAL;
1028 }
1029
1030 /*
1031 * Make sure the terminal type MSB is not null, otherwise it
1032 * could be confused with a unit.
1033 */
1034 type = get_unaligned_le16(&buffer[4]);
1035 if ((type & 0xff00) == 0) {
1036 uvc_dbg(dev, DESCR,
1037 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1038 udev->devnum, alts->desc.bInterfaceNumber,
1039 buffer[3], type);
1040 return 0;
1041 }
1042
1043 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
1044 1, 0);
1045 if (term == NULL)
1046 return -ENOMEM;
1047
1048 memcpy(term->baSourceID, &buffer[7], 1);
1049
1050 if (buffer[8] != 0)
1051 usb_string(udev, buffer[8], term->name,
1052 sizeof(term->name));
1053 else
1054 sprintf(term->name, "Output %u", buffer[3]);
1055
1056 list_add_tail(&term->list, &dev->entities);
1057 break;
1058
1059 case UVC_VC_SELECTOR_UNIT:
1060 p = buflen >= 5 ? buffer[4] : 0;
1061
1062 if (buflen < 5 || buflen < 6 + p) {
1063 uvc_dbg(dev, DESCR,
1064 "device %d videocontrol interface %d SELECTOR_UNIT error\n",
1065 udev->devnum, alts->desc.bInterfaceNumber);
1066 return -EINVAL;
1067 }
1068
1069 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
1070 if (unit == NULL)
1071 return -ENOMEM;
1072
1073 memcpy(unit->baSourceID, &buffer[5], p);
1074
1075 if (buffer[5+p] != 0)
1076 usb_string(udev, buffer[5+p], unit->name,
1077 sizeof(unit->name));
1078 else
1079 sprintf(unit->name, "Selector %u", buffer[3]);
1080
1081 list_add_tail(&unit->list, &dev->entities);
1082 break;
1083
1084 case UVC_VC_PROCESSING_UNIT:
1085 n = buflen >= 8 ? buffer[7] : 0;
1086 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1087
1088 if (buflen < p + n) {
1089 uvc_dbg(dev, DESCR,
1090 "device %d videocontrol interface %d PROCESSING_UNIT error\n",
1091 udev->devnum, alts->desc.bInterfaceNumber);
1092 return -EINVAL;
1093 }
1094
1095 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
1096 if (unit == NULL)
1097 return -ENOMEM;
1098
1099 memcpy(unit->baSourceID, &buffer[4], 1);
1100 unit->processing.wMaxMultiplier =
1101 get_unaligned_le16(&buffer[5]);
1102 unit->processing.bControlSize = buffer[7];
1103 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1104 memcpy(unit->processing.bmControls, &buffer[8], n);
1105 if (dev->uvc_version >= 0x0110)
1106 unit->processing.bmVideoStandards = buffer[9+n];
1107
1108 if (buffer[8+n] != 0)
1109 usb_string(udev, buffer[8+n], unit->name,
1110 sizeof(unit->name));
1111 else
1112 sprintf(unit->name, "Processing %u", buffer[3]);
1113
1114 list_add_tail(&unit->list, &dev->entities);
1115 break;
1116
1117 case UVC_VC_EXTENSION_UNIT:
1118 p = buflen >= 22 ? buffer[21] : 0;
1119 n = buflen >= 24 + p ? buffer[22+p] : 0;
1120
1121 if (buflen < 24 + p + n) {
1122 uvc_dbg(dev, DESCR,
1123 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
1124 udev->devnum, alts->desc.bInterfaceNumber);
1125 return -EINVAL;
1126 }
1127
1128 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n);
1129 if (unit == NULL)
1130 return -ENOMEM;
1131
1132 memcpy(unit->guid, &buffer[4], 16);
1133 unit->extension.bNumControls = buffer[20];
1134 memcpy(unit->baSourceID, &buffer[22], p);
1135 unit->extension.bControlSize = buffer[22+p];
1136 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1137 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1138
1139 if (buffer[23+p+n] != 0)
1140 usb_string(udev, buffer[23+p+n], unit->name,
1141 sizeof(unit->name));
1142 else
1143 sprintf(unit->name, "Extension %u", buffer[3]);
1144
1145 list_add_tail(&unit->list, &dev->entities);
1146 break;
1147
1148 default:
1149 uvc_dbg(dev, DESCR,
1150 "Found an unknown CS_INTERFACE descriptor (%u)\n",
1151 buffer[2]);
1152 break;
1153 }
1154
1155 return 0;
1156 }
1157
uvc_parse_control(struct uvc_device * dev)1158 static int uvc_parse_control(struct uvc_device *dev)
1159 {
1160 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1161 unsigned char *buffer = alts->extra;
1162 int buflen = alts->extralen;
1163 int ret;
1164
1165 /*
1166 * Parse the default alternate setting only, as the UVC specification
1167 * defines a single alternate setting, the default alternate setting
1168 * zero.
1169 */
1170
1171 while (buflen > 2) {
1172 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1173 buffer[1] != USB_DT_CS_INTERFACE)
1174 goto next_descriptor;
1175
1176 if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0)
1177 return ret;
1178
1179 next_descriptor:
1180 buflen -= buffer[0];
1181 buffer += buffer[0];
1182 }
1183
1184 /*
1185 * Check if the optional status endpoint is present. Built-in iSight
1186 * webcams have an interrupt endpoint but spit proprietary data that
1187 * don't conform to the UVC status endpoint messages. Don't try to
1188 * handle the interrupt endpoint for those cameras.
1189 */
1190 if (alts->desc.bNumEndpoints == 1 &&
1191 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1192 struct usb_host_endpoint *ep = &alts->endpoint[0];
1193 struct usb_endpoint_descriptor *desc = &ep->desc;
1194
1195 if (usb_endpoint_is_int_in(desc) &&
1196 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1197 desc->bInterval != 0) {
1198 uvc_dbg(dev, DESCR,
1199 "Found a Status endpoint (addr %02x)\n",
1200 desc->bEndpointAddress);
1201 dev->int_ep = ep;
1202 }
1203 }
1204
1205 return 0;
1206 }
1207
1208 /* -----------------------------------------------------------------------------
1209 * Privacy GPIO
1210 */
1211
uvc_gpio_event(struct uvc_device * dev)1212 static void uvc_gpio_event(struct uvc_device *dev)
1213 {
1214 struct uvc_entity *unit = dev->gpio_unit;
1215 struct uvc_video_chain *chain;
1216 u8 new_val;
1217
1218 if (!unit)
1219 return;
1220
1221 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy);
1222
1223 /* GPIO entities are always on the first chain. */
1224 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list);
1225 uvc_ctrl_status_event(chain, unit->controls, &new_val);
1226 }
1227
uvc_gpio_get_cur(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,void * data,u16 size)1228 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity,
1229 u8 cs, void *data, u16 size)
1230 {
1231 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1)
1232 return -EINVAL;
1233
1234 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy);
1235
1236 return 0;
1237 }
1238
uvc_gpio_get_info(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,u8 * caps)1239 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity,
1240 u8 cs, u8 *caps)
1241 {
1242 if (cs != UVC_CT_PRIVACY_CONTROL)
1243 return -EINVAL;
1244
1245 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE;
1246 return 0;
1247 }
1248
uvc_gpio_irq(int irq,void * data)1249 static irqreturn_t uvc_gpio_irq(int irq, void *data)
1250 {
1251 struct uvc_device *dev = data;
1252
1253 uvc_gpio_event(dev);
1254 return IRQ_HANDLED;
1255 }
1256
uvc_gpio_parse(struct uvc_device * dev)1257 static int uvc_gpio_parse(struct uvc_device *dev)
1258 {
1259 struct uvc_entity *unit;
1260 struct gpio_desc *gpio_privacy;
1261 int irq;
1262
1263 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy",
1264 GPIOD_IN);
1265 if (IS_ERR_OR_NULL(gpio_privacy))
1266 return PTR_ERR_OR_ZERO(gpio_privacy);
1267
1268 irq = gpiod_to_irq(gpio_privacy);
1269 if (irq < 0) {
1270 if (irq != EPROBE_DEFER)
1271 dev_err(&dev->udev->dev,
1272 "No IRQ for privacy GPIO (%d)\n", irq);
1273 return irq;
1274 }
1275
1276 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1);
1277 if (!unit)
1278 return -ENOMEM;
1279
1280 unit->gpio.gpio_privacy = gpio_privacy;
1281 unit->gpio.irq = irq;
1282 unit->gpio.bControlSize = 1;
1283 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit);
1284 unit->gpio.bmControls[0] = 1;
1285 unit->get_cur = uvc_gpio_get_cur;
1286 unit->get_info = uvc_gpio_get_info;
1287 strscpy(unit->name, "GPIO", sizeof(unit->name));
1288
1289 list_add_tail(&unit->list, &dev->entities);
1290
1291 dev->gpio_unit = unit;
1292
1293 return 0;
1294 }
1295
uvc_gpio_init_irq(struct uvc_device * dev)1296 static int uvc_gpio_init_irq(struct uvc_device *dev)
1297 {
1298 struct uvc_entity *unit = dev->gpio_unit;
1299
1300 if (!unit || unit->gpio.irq < 0)
1301 return 0;
1302
1303 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL,
1304 uvc_gpio_irq,
1305 IRQF_ONESHOT | IRQF_TRIGGER_FALLING |
1306 IRQF_TRIGGER_RISING,
1307 "uvc_privacy_gpio", dev);
1308 }
1309
1310 /* ------------------------------------------------------------------------
1311 * UVC device scan
1312 */
1313
1314 /*
1315 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1316 * and containing the following units:
1317 *
1318 * - one or more Output Terminals (USB Streaming or Display)
1319 * - zero or one Processing Unit
1320 * - zero, one or more single-input Selector Units
1321 * - zero or one multiple-input Selector Units, provided all inputs are
1322 * connected to input terminals
1323 * - zero, one or mode single-input Extension Units
1324 * - one or more Input Terminals (Camera, External or USB Streaming)
1325 *
1326 * The terminal and units must match on of the following structures:
1327 *
1328 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1329 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1330 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1331 *
1332 * +---------+ +---------+ -> OTT_*(0)
1333 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1334 * +---------+ +---------+ -> OTT_*(n)
1335 *
1336 * The Processing Unit and Extension Units can be in any order. Additional
1337 * Extension Units connected to the main chain as single-unit branches are
1338 * also supported. Single-input Selector Units are ignored.
1339 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1340 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1341 struct uvc_entity *entity)
1342 {
1343 switch (UVC_ENTITY_TYPE(entity)) {
1344 case UVC_VC_EXTENSION_UNIT:
1345 uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
1346
1347 if (entity->bNrInPins != 1) {
1348 uvc_dbg(chain->dev, DESCR,
1349 "Extension unit %d has more than 1 input pin\n",
1350 entity->id);
1351 return -1;
1352 }
1353
1354 break;
1355
1356 case UVC_VC_PROCESSING_UNIT:
1357 uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
1358
1359 if (chain->processing != NULL) {
1360 uvc_dbg(chain->dev, DESCR,
1361 "Found multiple Processing Units in chain\n");
1362 return -1;
1363 }
1364
1365 chain->processing = entity;
1366 break;
1367
1368 case UVC_VC_SELECTOR_UNIT:
1369 uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
1370
1371 /* Single-input selector units are ignored. */
1372 if (entity->bNrInPins == 1)
1373 break;
1374
1375 if (chain->selector != NULL) {
1376 uvc_dbg(chain->dev, DESCR,
1377 "Found multiple Selector Units in chain\n");
1378 return -1;
1379 }
1380
1381 chain->selector = entity;
1382 break;
1383
1384 case UVC_ITT_VENDOR_SPECIFIC:
1385 case UVC_ITT_CAMERA:
1386 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1387 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1388
1389 break;
1390
1391 case UVC_OTT_VENDOR_SPECIFIC:
1392 case UVC_OTT_DISPLAY:
1393 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1394 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1395
1396 break;
1397
1398 case UVC_TT_STREAMING:
1399 if (UVC_ENTITY_IS_ITERM(entity))
1400 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1401 else
1402 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1403
1404 break;
1405
1406 default:
1407 uvc_dbg(chain->dev, DESCR,
1408 "Unsupported entity type 0x%04x found in chain\n",
1409 UVC_ENTITY_TYPE(entity));
1410 return -1;
1411 }
1412
1413 list_add_tail(&entity->chain, &chain->entities);
1414 return 0;
1415 }
1416
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1417 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1418 struct uvc_entity *entity, struct uvc_entity *prev)
1419 {
1420 struct uvc_entity *forward;
1421 int found;
1422
1423 /* Forward scan */
1424 forward = NULL;
1425 found = 0;
1426
1427 while (1) {
1428 forward = uvc_entity_by_reference(chain->dev, entity->id,
1429 forward);
1430 if (forward == NULL)
1431 break;
1432 if (forward == prev)
1433 continue;
1434 if (forward->chain.next || forward->chain.prev) {
1435 uvc_dbg(chain->dev, DESCR,
1436 "Found reference to entity %d already in chain\n",
1437 forward->id);
1438 return -EINVAL;
1439 }
1440
1441 switch (UVC_ENTITY_TYPE(forward)) {
1442 case UVC_VC_EXTENSION_UNIT:
1443 if (forward->bNrInPins != 1) {
1444 uvc_dbg(chain->dev, DESCR,
1445 "Extension unit %d has more than 1 input pin\n",
1446 forward->id);
1447 return -EINVAL;
1448 }
1449
1450 /*
1451 * Some devices reference an output terminal as the
1452 * source of extension units. This is incorrect, as
1453 * output terminals only have an input pin, and thus
1454 * can't be connected to any entity in the forward
1455 * direction. The resulting topology would cause issues
1456 * when registering the media controller graph. To
1457 * avoid this problem, connect the extension unit to
1458 * the source of the output terminal instead.
1459 */
1460 if (UVC_ENTITY_IS_OTERM(entity)) {
1461 struct uvc_entity *source;
1462
1463 source = uvc_entity_by_id(chain->dev,
1464 entity->baSourceID[0]);
1465 if (!source) {
1466 uvc_dbg(chain->dev, DESCR,
1467 "Can't connect extension unit %u in chain\n",
1468 forward->id);
1469 break;
1470 }
1471
1472 forward->baSourceID[0] = source->id;
1473 }
1474
1475 list_add_tail(&forward->chain, &chain->entities);
1476 if (!found)
1477 uvc_dbg_cont(PROBE, " (->");
1478
1479 uvc_dbg_cont(PROBE, " XU %d", forward->id);
1480 found = 1;
1481 break;
1482
1483 case UVC_OTT_VENDOR_SPECIFIC:
1484 case UVC_OTT_DISPLAY:
1485 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1486 case UVC_TT_STREAMING:
1487 if (UVC_ENTITY_IS_ITERM(forward)) {
1488 uvc_dbg(chain->dev, DESCR,
1489 "Unsupported input terminal %u\n",
1490 forward->id);
1491 return -EINVAL;
1492 }
1493
1494 if (UVC_ENTITY_IS_OTERM(entity)) {
1495 uvc_dbg(chain->dev, DESCR,
1496 "Unsupported connection between output terminals %u and %u\n",
1497 entity->id, forward->id);
1498 break;
1499 }
1500
1501 list_add_tail(&forward->chain, &chain->entities);
1502 if (!found)
1503 uvc_dbg_cont(PROBE, " (->");
1504
1505 uvc_dbg_cont(PROBE, " OT %d", forward->id);
1506 found = 1;
1507 break;
1508 }
1509 }
1510 if (found)
1511 uvc_dbg_cont(PROBE, ")");
1512
1513 return 0;
1514 }
1515
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1516 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1517 struct uvc_entity **_entity)
1518 {
1519 struct uvc_entity *entity = *_entity;
1520 struct uvc_entity *term;
1521 int id = -EINVAL, i;
1522
1523 switch (UVC_ENTITY_TYPE(entity)) {
1524 case UVC_VC_EXTENSION_UNIT:
1525 case UVC_VC_PROCESSING_UNIT:
1526 id = entity->baSourceID[0];
1527 break;
1528
1529 case UVC_VC_SELECTOR_UNIT:
1530 /* Single-input selector units are ignored. */
1531 if (entity->bNrInPins == 1) {
1532 id = entity->baSourceID[0];
1533 break;
1534 }
1535
1536 uvc_dbg_cont(PROBE, " <- IT");
1537
1538 chain->selector = entity;
1539 for (i = 0; i < entity->bNrInPins; ++i) {
1540 id = entity->baSourceID[i];
1541 term = uvc_entity_by_id(chain->dev, id);
1542 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1543 uvc_dbg(chain->dev, DESCR,
1544 "Selector unit %d input %d isn't connected to an input terminal\n",
1545 entity->id, i);
1546 return -1;
1547 }
1548
1549 if (term->chain.next || term->chain.prev) {
1550 uvc_dbg(chain->dev, DESCR,
1551 "Found reference to entity %d already in chain\n",
1552 term->id);
1553 return -EINVAL;
1554 }
1555
1556 uvc_dbg_cont(PROBE, " %d", term->id);
1557
1558 list_add_tail(&term->chain, &chain->entities);
1559 uvc_scan_chain_forward(chain, term, entity);
1560 }
1561
1562 uvc_dbg_cont(PROBE, "\n");
1563
1564 id = 0;
1565 break;
1566
1567 case UVC_ITT_VENDOR_SPECIFIC:
1568 case UVC_ITT_CAMERA:
1569 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1570 case UVC_OTT_VENDOR_SPECIFIC:
1571 case UVC_OTT_DISPLAY:
1572 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1573 case UVC_TT_STREAMING:
1574 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1575 break;
1576 }
1577
1578 if (id <= 0) {
1579 *_entity = NULL;
1580 return id;
1581 }
1582
1583 entity = uvc_entity_by_id(chain->dev, id);
1584 if (entity == NULL) {
1585 uvc_dbg(chain->dev, DESCR,
1586 "Found reference to unknown entity %d\n", id);
1587 return -EINVAL;
1588 }
1589
1590 *_entity = entity;
1591 return 0;
1592 }
1593
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1594 static int uvc_scan_chain(struct uvc_video_chain *chain,
1595 struct uvc_entity *term)
1596 {
1597 struct uvc_entity *entity, *prev;
1598
1599 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
1600
1601 entity = term;
1602 prev = NULL;
1603
1604 while (entity != NULL) {
1605 /* Entity must not be part of an existing chain */
1606 if (entity->chain.next || entity->chain.prev) {
1607 uvc_dbg(chain->dev, DESCR,
1608 "Found reference to entity %d already in chain\n",
1609 entity->id);
1610 return -EINVAL;
1611 }
1612
1613 /* Process entity */
1614 if (uvc_scan_chain_entity(chain, entity) < 0)
1615 return -EINVAL;
1616
1617 /* Forward scan */
1618 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1619 return -EINVAL;
1620
1621 /* Backward scan */
1622 prev = entity;
1623 if (uvc_scan_chain_backward(chain, &entity) < 0)
1624 return -EINVAL;
1625 }
1626
1627 return 0;
1628 }
1629
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1630 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1631 char *buffer)
1632 {
1633 struct uvc_entity *term;
1634 unsigned int nterms = 0;
1635 char *p = buffer;
1636
1637 list_for_each_entry(term, terms, chain) {
1638 if (!UVC_ENTITY_IS_TERM(term) ||
1639 UVC_TERM_DIRECTION(term) != dir)
1640 continue;
1641
1642 if (nterms)
1643 p += sprintf(p, ",");
1644 if (++nterms >= 4) {
1645 p += sprintf(p, "...");
1646 break;
1647 }
1648 p += sprintf(p, "%u", term->id);
1649 }
1650
1651 return p - buffer;
1652 }
1653
uvc_print_chain(struct uvc_video_chain * chain)1654 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1655 {
1656 static char buffer[43];
1657 char *p = buffer;
1658
1659 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1660 p += sprintf(p, " -> ");
1661 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1662
1663 return buffer;
1664 }
1665
uvc_alloc_chain(struct uvc_device * dev)1666 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1667 {
1668 struct uvc_video_chain *chain;
1669
1670 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1671 if (chain == NULL)
1672 return NULL;
1673
1674 INIT_LIST_HEAD(&chain->entities);
1675 mutex_init(&chain->ctrl_mutex);
1676 chain->dev = dev;
1677 v4l2_prio_init(&chain->prio);
1678
1679 return chain;
1680 }
1681
1682 /*
1683 * Fallback heuristic for devices that don't connect units and terminals in a
1684 * valid chain.
1685 *
1686 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1687 * to fail, but if we just take the entities we can find and put them together
1688 * in the most sensible chain we can think of, turns out they do work anyway.
1689 * Note: This heuristic assumes there is a single chain.
1690 *
1691 * At the time of writing, devices known to have such a broken chain are
1692 * - Acer Integrated Camera (5986:055a)
1693 * - Realtek rtl157a7 (0bda:57a7)
1694 */
uvc_scan_fallback(struct uvc_device * dev)1695 static int uvc_scan_fallback(struct uvc_device *dev)
1696 {
1697 struct uvc_video_chain *chain;
1698 struct uvc_entity *iterm = NULL;
1699 struct uvc_entity *oterm = NULL;
1700 struct uvc_entity *entity;
1701 struct uvc_entity *prev;
1702
1703 /*
1704 * Start by locating the input and output terminals. We only support
1705 * devices with exactly one of each for now.
1706 */
1707 list_for_each_entry(entity, &dev->entities, list) {
1708 if (UVC_ENTITY_IS_ITERM(entity)) {
1709 if (iterm)
1710 return -EINVAL;
1711 iterm = entity;
1712 }
1713
1714 if (UVC_ENTITY_IS_OTERM(entity)) {
1715 if (oterm)
1716 return -EINVAL;
1717 oterm = entity;
1718 }
1719 }
1720
1721 if (iterm == NULL || oterm == NULL)
1722 return -EINVAL;
1723
1724 /* Allocate the chain and fill it. */
1725 chain = uvc_alloc_chain(dev);
1726 if (chain == NULL)
1727 return -ENOMEM;
1728
1729 if (uvc_scan_chain_entity(chain, oterm) < 0)
1730 goto error;
1731
1732 prev = oterm;
1733
1734 /*
1735 * Add all Processing and Extension Units with two pads. The order
1736 * doesn't matter much, use reverse list traversal to connect units in
1737 * UVC descriptor order as we build the chain from output to input. This
1738 * leads to units appearing in the order meant by the manufacturer for
1739 * the cameras known to require this heuristic.
1740 */
1741 list_for_each_entry_reverse(entity, &dev->entities, list) {
1742 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1743 entity->type != UVC_VC_EXTENSION_UNIT)
1744 continue;
1745
1746 if (entity->num_pads != 2)
1747 continue;
1748
1749 if (uvc_scan_chain_entity(chain, entity) < 0)
1750 goto error;
1751
1752 prev->baSourceID[0] = entity->id;
1753 prev = entity;
1754 }
1755
1756 if (uvc_scan_chain_entity(chain, iterm) < 0)
1757 goto error;
1758
1759 prev->baSourceID[0] = iterm->id;
1760
1761 list_add_tail(&chain->list, &dev->chains);
1762
1763 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
1764 uvc_print_chain(chain));
1765
1766 return 0;
1767
1768 error:
1769 kfree(chain);
1770 return -EINVAL;
1771 }
1772
1773 /*
1774 * Scan the device for video chains and register video devices.
1775 *
1776 * Chains are scanned starting at their output terminals and walked backwards.
1777 */
uvc_scan_device(struct uvc_device * dev)1778 static int uvc_scan_device(struct uvc_device *dev)
1779 {
1780 struct uvc_video_chain *chain;
1781 struct uvc_entity *term;
1782
1783 list_for_each_entry(term, &dev->entities, list) {
1784 if (!UVC_ENTITY_IS_OTERM(term))
1785 continue;
1786
1787 /*
1788 * If the terminal is already included in a chain, skip it.
1789 * This can happen for chains that have multiple output
1790 * terminals, where all output terminals beside the first one
1791 * will be inserted in the chain in forward scans.
1792 */
1793 if (term->chain.next || term->chain.prev)
1794 continue;
1795
1796 chain = uvc_alloc_chain(dev);
1797 if (chain == NULL)
1798 return -ENOMEM;
1799
1800 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1801
1802 if (uvc_scan_chain(chain, term) < 0) {
1803 kfree(chain);
1804 continue;
1805 }
1806
1807 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
1808 uvc_print_chain(chain));
1809
1810 list_add_tail(&chain->list, &dev->chains);
1811 }
1812
1813 if (list_empty(&dev->chains))
1814 uvc_scan_fallback(dev);
1815
1816 if (list_empty(&dev->chains)) {
1817 dev_info(&dev->udev->dev, "No valid video chain found.\n");
1818 return -1;
1819 }
1820
1821 /* Add GPIO entity to the first chain. */
1822 if (dev->gpio_unit) {
1823 chain = list_first_entry(&dev->chains,
1824 struct uvc_video_chain, list);
1825 list_add_tail(&dev->gpio_unit->chain, &chain->entities);
1826 }
1827
1828 return 0;
1829 }
1830
1831 /* ------------------------------------------------------------------------
1832 * Video device registration and unregistration
1833 */
1834
1835 /*
1836 * Delete the UVC device.
1837 *
1838 * Called by the kernel when the last reference to the uvc_device structure
1839 * is released.
1840 *
1841 * As this function is called after or during disconnect(), all URBs have
1842 * already been cancelled by the USB core. There is no need to kill the
1843 * interrupt URB manually.
1844 */
uvc_delete(struct kref * kref)1845 static void uvc_delete(struct kref *kref)
1846 {
1847 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1848 struct list_head *p, *n;
1849
1850 uvc_status_cleanup(dev);
1851 uvc_ctrl_cleanup_device(dev);
1852
1853 usb_put_intf(dev->intf);
1854 usb_put_dev(dev->udev);
1855
1856 #ifdef CONFIG_MEDIA_CONTROLLER
1857 media_device_cleanup(&dev->mdev);
1858 #endif
1859
1860 list_for_each_safe(p, n, &dev->chains) {
1861 struct uvc_video_chain *chain;
1862 chain = list_entry(p, struct uvc_video_chain, list);
1863 kfree(chain);
1864 }
1865
1866 list_for_each_safe(p, n, &dev->entities) {
1867 struct uvc_entity *entity;
1868 entity = list_entry(p, struct uvc_entity, list);
1869 #ifdef CONFIG_MEDIA_CONTROLLER
1870 uvc_mc_cleanup_entity(entity);
1871 #endif
1872 kfree(entity);
1873 }
1874
1875 list_for_each_safe(p, n, &dev->streams) {
1876 struct uvc_streaming *streaming;
1877 streaming = list_entry(p, struct uvc_streaming, list);
1878 usb_driver_release_interface(&uvc_driver.driver,
1879 streaming->intf);
1880 uvc_stream_delete(streaming);
1881 }
1882
1883 kfree(dev);
1884 }
1885
uvc_release(struct video_device * vdev)1886 static void uvc_release(struct video_device *vdev)
1887 {
1888 struct uvc_streaming *stream = video_get_drvdata(vdev);
1889 struct uvc_device *dev = stream->dev;
1890
1891 kref_put(&dev->ref, uvc_delete);
1892 }
1893
1894 /*
1895 * Unregister the video devices.
1896 */
uvc_unregister_video(struct uvc_device * dev)1897 static void uvc_unregister_video(struct uvc_device *dev)
1898 {
1899 struct uvc_streaming *stream;
1900
1901 list_for_each_entry(stream, &dev->streams, list) {
1902 if (!video_is_registered(&stream->vdev))
1903 continue;
1904
1905 video_unregister_device(&stream->vdev);
1906 video_unregister_device(&stream->meta.vdev);
1907
1908 uvc_debugfs_cleanup_stream(stream);
1909 }
1910
1911 uvc_status_unregister(dev);
1912
1913 if (dev->vdev.dev)
1914 v4l2_device_unregister(&dev->vdev);
1915 #ifdef CONFIG_MEDIA_CONTROLLER
1916 if (media_devnode_is_registered(dev->mdev.devnode))
1917 media_device_unregister(&dev->mdev);
1918 #endif
1919 }
1920
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)1921 int uvc_register_video_device(struct uvc_device *dev,
1922 struct uvc_streaming *stream,
1923 struct video_device *vdev,
1924 struct uvc_video_queue *queue,
1925 enum v4l2_buf_type type,
1926 const struct v4l2_file_operations *fops,
1927 const struct v4l2_ioctl_ops *ioctl_ops)
1928 {
1929 int ret;
1930
1931 /* Initialize the video buffers queue. */
1932 ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
1933 if (ret)
1934 return ret;
1935
1936 /* Register the device with V4L. */
1937
1938 /*
1939 * We already hold a reference to dev->udev. The video device will be
1940 * unregistered before the reference is released, so we don't need to
1941 * get another one.
1942 */
1943 vdev->v4l2_dev = &dev->vdev;
1944 vdev->fops = fops;
1945 vdev->ioctl_ops = ioctl_ops;
1946 vdev->release = uvc_release;
1947 vdev->prio = &stream->chain->prio;
1948 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1949 vdev->vfl_dir = VFL_DIR_TX;
1950 else
1951 vdev->vfl_dir = VFL_DIR_RX;
1952
1953 switch (type) {
1954 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1955 default:
1956 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1957 break;
1958 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1959 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
1960 break;
1961 case V4L2_BUF_TYPE_META_CAPTURE:
1962 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
1963 break;
1964 }
1965
1966 strscpy(vdev->name, dev->name, sizeof(vdev->name));
1967
1968 /*
1969 * Set the driver data before calling video_register_device, otherwise
1970 * the file open() handler might race us.
1971 */
1972 video_set_drvdata(vdev, stream);
1973
1974 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1975 if (ret < 0) {
1976 dev_err(&stream->intf->dev,
1977 "Failed to register %s device (%d).\n",
1978 v4l2_type_names[type], ret);
1979 return ret;
1980 }
1981
1982 kref_get(&dev->ref);
1983 return 0;
1984 }
1985
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)1986 static int uvc_register_video(struct uvc_device *dev,
1987 struct uvc_streaming *stream)
1988 {
1989 int ret;
1990
1991 /* Initialize the streaming interface with default parameters. */
1992 ret = uvc_video_init(stream);
1993 if (ret < 0) {
1994 dev_err(&stream->intf->dev,
1995 "Failed to initialize the device (%d).\n", ret);
1996 return ret;
1997 }
1998
1999 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2000 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2001 | V4L2_CAP_META_CAPTURE;
2002 else
2003 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2004
2005 uvc_debugfs_init_stream(stream);
2006
2007 /* Register the device with V4L. */
2008 return uvc_register_video_device(dev, stream, &stream->vdev,
2009 &stream->queue, stream->type,
2010 &uvc_fops, &uvc_ioctl_ops);
2011 }
2012
2013 /*
2014 * Register all video devices in all chains.
2015 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2016 static int uvc_register_terms(struct uvc_device *dev,
2017 struct uvc_video_chain *chain)
2018 {
2019 struct uvc_streaming *stream;
2020 struct uvc_entity *term;
2021 int ret;
2022
2023 list_for_each_entry(term, &chain->entities, chain) {
2024 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2025 continue;
2026
2027 stream = uvc_stream_by_id(dev, term->id);
2028 if (stream == NULL) {
2029 dev_info(&dev->udev->dev,
2030 "No streaming interface found for terminal %u.",
2031 term->id);
2032 continue;
2033 }
2034
2035 stream->chain = chain;
2036 ret = uvc_register_video(dev, stream);
2037 if (ret < 0)
2038 return ret;
2039
2040 /*
2041 * Register a metadata node, but ignore a possible failure,
2042 * complete registration of video nodes anyway.
2043 */
2044 uvc_meta_register(stream);
2045
2046 term->vdev = &stream->vdev;
2047 }
2048
2049 return 0;
2050 }
2051
uvc_register_chains(struct uvc_device * dev)2052 static int uvc_register_chains(struct uvc_device *dev)
2053 {
2054 struct uvc_video_chain *chain;
2055 int ret;
2056
2057 list_for_each_entry(chain, &dev->chains, list) {
2058 ret = uvc_register_terms(dev, chain);
2059 if (ret < 0)
2060 return ret;
2061
2062 #ifdef CONFIG_MEDIA_CONTROLLER
2063 ret = uvc_mc_register_entities(chain);
2064 if (ret < 0)
2065 dev_info(&dev->udev->dev,
2066 "Failed to register entities (%d).\n", ret);
2067 #endif
2068 }
2069
2070 return 0;
2071 }
2072
2073 /* ------------------------------------------------------------------------
2074 * USB probe, disconnect, suspend and resume
2075 */
2076
2077 static const struct uvc_device_info uvc_quirk_none = { 0 };
2078
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2079 static int uvc_probe(struct usb_interface *intf,
2080 const struct usb_device_id *id)
2081 {
2082 struct usb_device *udev = interface_to_usbdev(intf);
2083 struct uvc_device *dev;
2084 const struct uvc_device_info *info =
2085 (const struct uvc_device_info *)id->driver_info;
2086 int function;
2087 int ret;
2088
2089 /* Allocate memory for the device and initialize it. */
2090 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2091 if (dev == NULL)
2092 return -ENOMEM;
2093
2094 INIT_LIST_HEAD(&dev->entities);
2095 INIT_LIST_HEAD(&dev->chains);
2096 INIT_LIST_HEAD(&dev->streams);
2097 kref_init(&dev->ref);
2098 atomic_set(&dev->nmappings, 0);
2099 mutex_init(&dev->lock);
2100
2101 dev->udev = usb_get_dev(udev);
2102 dev->intf = usb_get_intf(intf);
2103 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2104 dev->info = info ? info : &uvc_quirk_none;
2105 dev->quirks = uvc_quirks_param == -1
2106 ? dev->info->quirks : uvc_quirks_param;
2107
2108 if (id->idVendor && id->idProduct)
2109 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
2110 udev->devpath, id->idVendor, id->idProduct);
2111 else
2112 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
2113 udev->devpath);
2114
2115 if (udev->product != NULL)
2116 strscpy(dev->name, udev->product, sizeof(dev->name));
2117 else
2118 snprintf(dev->name, sizeof(dev->name),
2119 "UVC Camera (%04x:%04x)",
2120 le16_to_cpu(udev->descriptor.idVendor),
2121 le16_to_cpu(udev->descriptor.idProduct));
2122
2123 /*
2124 * Add iFunction or iInterface to names when available as additional
2125 * distinguishers between interfaces. iFunction is prioritized over
2126 * iInterface which matches Windows behavior at the point of writing.
2127 */
2128 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2129 function = intf->intf_assoc->iFunction;
2130 else
2131 function = intf->cur_altsetting->desc.iInterface;
2132 if (function != 0) {
2133 size_t len;
2134
2135 strlcat(dev->name, ": ", sizeof(dev->name));
2136 len = strlen(dev->name);
2137 usb_string(udev, function, dev->name + len,
2138 sizeof(dev->name) - len);
2139 }
2140
2141 /* Initialize the media device. */
2142 #ifdef CONFIG_MEDIA_CONTROLLER
2143 dev->mdev.dev = &intf->dev;
2144 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2145 if (udev->serial)
2146 strscpy(dev->mdev.serial, udev->serial,
2147 sizeof(dev->mdev.serial));
2148 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2149 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2150 media_device_init(&dev->mdev);
2151
2152 dev->vdev.mdev = &dev->mdev;
2153 #endif
2154
2155 /* Parse the Video Class control descriptor. */
2156 if (uvc_parse_control(dev) < 0) {
2157 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
2158 goto error;
2159 }
2160
2161 /* Parse the associated GPIOs. */
2162 if (uvc_gpio_parse(dev) < 0) {
2163 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
2164 goto error;
2165 }
2166
2167 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2168 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2169 udev->product ? udev->product : "<unnamed>",
2170 le16_to_cpu(udev->descriptor.idVendor),
2171 le16_to_cpu(udev->descriptor.idProduct));
2172
2173 if (dev->quirks != dev->info->quirks) {
2174 dev_info(&dev->udev->dev,
2175 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
2176 dev->quirks);
2177 dev_info(&dev->udev->dev,
2178 "Please report required quirks to the linux-media mailing list.\n");
2179 }
2180
2181 if (dev->info->uvc_version) {
2182 dev->uvc_version = dev->info->uvc_version;
2183 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n",
2184 dev->uvc_version >> 8, dev->uvc_version & 0xff);
2185 }
2186
2187 /* Register the V4L2 device. */
2188 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2189 goto error;
2190
2191 /* Scan the device for video chains. */
2192 if (uvc_scan_device(dev) < 0)
2193 goto error;
2194
2195 /* Initialize controls. */
2196 if (uvc_ctrl_init_device(dev) < 0)
2197 goto error;
2198
2199 /* Register video device nodes. */
2200 if (uvc_register_chains(dev) < 0)
2201 goto error;
2202
2203 #ifdef CONFIG_MEDIA_CONTROLLER
2204 /* Register the media device node */
2205 if (media_device_register(&dev->mdev) < 0)
2206 goto error;
2207 #endif
2208 /* Save our data pointer in the interface data. */
2209 usb_set_intfdata(intf, dev);
2210
2211 /* Initialize the interrupt URB. */
2212 if ((ret = uvc_status_init(dev)) < 0) {
2213 dev_info(&dev->udev->dev,
2214 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
2215 ret);
2216 }
2217
2218 ret = uvc_gpio_init_irq(dev);
2219 if (ret < 0) {
2220 dev_err(&dev->udev->dev,
2221 "Unable to request privacy GPIO IRQ (%d)\n", ret);
2222 goto error;
2223 }
2224
2225 uvc_dbg(dev, PROBE, "UVC device initialized\n");
2226 usb_enable_autosuspend(udev);
2227 return 0;
2228
2229 error:
2230 uvc_unregister_video(dev);
2231 kref_put(&dev->ref, uvc_delete);
2232 return -ENODEV;
2233 }
2234
uvc_disconnect(struct usb_interface * intf)2235 static void uvc_disconnect(struct usb_interface *intf)
2236 {
2237 struct uvc_device *dev = usb_get_intfdata(intf);
2238
2239 /*
2240 * Set the USB interface data to NULL. This can be done outside the
2241 * lock, as there's no other reader.
2242 */
2243 usb_set_intfdata(intf, NULL);
2244
2245 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2246 UVC_SC_VIDEOSTREAMING)
2247 return;
2248
2249 uvc_unregister_video(dev);
2250 kref_put(&dev->ref, uvc_delete);
2251 }
2252
uvc_suspend(struct usb_interface * intf,pm_message_t message)2253 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2254 {
2255 struct uvc_device *dev = usb_get_intfdata(intf);
2256 struct uvc_streaming *stream;
2257
2258 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
2259 intf->cur_altsetting->desc.bInterfaceNumber);
2260
2261 /* Controls are cached on the fly so they don't need to be saved. */
2262 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2263 UVC_SC_VIDEOCONTROL) {
2264 mutex_lock(&dev->lock);
2265 if (dev->users)
2266 uvc_status_stop(dev);
2267 mutex_unlock(&dev->lock);
2268 return 0;
2269 }
2270
2271 list_for_each_entry(stream, &dev->streams, list) {
2272 if (stream->intf == intf)
2273 return uvc_video_suspend(stream);
2274 }
2275
2276 uvc_dbg(dev, SUSPEND,
2277 "Suspend: video streaming USB interface mismatch\n");
2278 return -EINVAL;
2279 }
2280
__uvc_resume(struct usb_interface * intf,int reset)2281 static int __uvc_resume(struct usb_interface *intf, int reset)
2282 {
2283 struct uvc_device *dev = usb_get_intfdata(intf);
2284 struct uvc_streaming *stream;
2285 int ret = 0;
2286
2287 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
2288 intf->cur_altsetting->desc.bInterfaceNumber);
2289
2290 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2291 UVC_SC_VIDEOCONTROL) {
2292 if (reset) {
2293 ret = uvc_ctrl_restore_values(dev);
2294 if (ret < 0)
2295 return ret;
2296 }
2297
2298 mutex_lock(&dev->lock);
2299 if (dev->users)
2300 ret = uvc_status_start(dev, GFP_NOIO);
2301 mutex_unlock(&dev->lock);
2302
2303 return ret;
2304 }
2305
2306 list_for_each_entry(stream, &dev->streams, list) {
2307 if (stream->intf == intf) {
2308 ret = uvc_video_resume(stream, reset);
2309 if (ret < 0)
2310 uvc_queue_streamoff(&stream->queue,
2311 stream->queue.queue.type);
2312 return ret;
2313 }
2314 }
2315
2316 uvc_dbg(dev, SUSPEND,
2317 "Resume: video streaming USB interface mismatch\n");
2318 return -EINVAL;
2319 }
2320
uvc_resume(struct usb_interface * intf)2321 static int uvc_resume(struct usb_interface *intf)
2322 {
2323 return __uvc_resume(intf, 0);
2324 }
2325
uvc_reset_resume(struct usb_interface * intf)2326 static int uvc_reset_resume(struct usb_interface *intf)
2327 {
2328 return __uvc_resume(intf, 1);
2329 }
2330
2331 /* ------------------------------------------------------------------------
2332 * Module parameters
2333 */
2334
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2335 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2336 {
2337 if (uvc_clock_param == CLOCK_MONOTONIC)
2338 return sprintf(buffer, "CLOCK_MONOTONIC");
2339 else
2340 return sprintf(buffer, "CLOCK_REALTIME");
2341 }
2342
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2343 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2344 {
2345 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2346 val += strlen("clock_");
2347
2348 if (strcasecmp(val, "monotonic") == 0)
2349 uvc_clock_param = CLOCK_MONOTONIC;
2350 else if (strcasecmp(val, "realtime") == 0)
2351 uvc_clock_param = CLOCK_REALTIME;
2352 else
2353 return -EINVAL;
2354
2355 return 0;
2356 }
2357
2358 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2359 &uvc_clock_param, S_IRUGO|S_IWUSR);
2360 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2361 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR);
2362 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2363 module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR);
2364 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2365 module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
2366 MODULE_PARM_DESC(quirks, "Forced device quirks");
2367 module_param_named(trace, uvc_dbg_param, uint, S_IRUGO|S_IWUSR);
2368 MODULE_PARM_DESC(trace, "Trace level bitmask");
2369 module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);
2370 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2371
2372 /* ------------------------------------------------------------------------
2373 * Driver initialization and cleanup
2374 */
2375
2376 static const struct uvc_menu_info power_line_frequency_controls_limited[] = {
2377 { 1, "50 Hz" },
2378 { 2, "60 Hz" },
2379 };
2380
2381 static const struct uvc_control_mapping uvc_ctrl_power_line_mapping_limited = {
2382 .id = V4L2_CID_POWER_LINE_FREQUENCY,
2383 .entity = UVC_GUID_UVC_PROCESSING,
2384 .selector = UVC_PU_POWER_LINE_FREQUENCY_CONTROL,
2385 .size = 2,
2386 .offset = 0,
2387 .v4l2_type = V4L2_CTRL_TYPE_MENU,
2388 .data_type = UVC_CTRL_DATA_TYPE_ENUM,
2389 .menu_info = power_line_frequency_controls_limited,
2390 .menu_count = ARRAY_SIZE(power_line_frequency_controls_limited),
2391 };
2392
2393 static const struct uvc_device_info uvc_ctrl_power_line_limited = {
2394 .mappings = (const struct uvc_control_mapping *[]) {
2395 &uvc_ctrl_power_line_mapping_limited,
2396 NULL, /* Sentinel */
2397 },
2398 };
2399
2400 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2401 .quirks = UVC_QUIRK_PROBE_MINMAX,
2402 };
2403
2404 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2405 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2406 };
2407
2408 static const struct uvc_device_info uvc_quirk_probe_def = {
2409 .quirks = UVC_QUIRK_PROBE_DEF,
2410 };
2411
2412 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2413 .quirks = UVC_QUIRK_STREAM_NO_FID,
2414 };
2415
2416 static const struct uvc_device_info uvc_quirk_force_y8 = {
2417 .quirks = UVC_QUIRK_FORCE_Y8,
2418 };
2419
2420 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2421 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2422 {.meta_format = m}
2423
2424 /*
2425 * The Logitech cameras listed below have their interface class set to
2426 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2427 * though they are compliant.
2428 */
2429 static const struct usb_device_id uvc_ids[] = {
2430 /* Quanta USB2.0 HD UVC Webcam */
2431 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2432 | USB_DEVICE_ID_MATCH_INT_INFO,
2433 .idVendor = 0x0408,
2434 .idProduct = 0x3090,
2435 .bInterfaceClass = USB_CLASS_VIDEO,
2436 .bInterfaceSubClass = 1,
2437 .bInterfaceProtocol = 0,
2438 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2439 /* Quanta USB2.0 HD UVC Webcam */
2440 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2441 | USB_DEVICE_ID_MATCH_INT_INFO,
2442 .idVendor = 0x0408,
2443 .idProduct = 0x4030,
2444 .bInterfaceClass = USB_CLASS_VIDEO,
2445 .bInterfaceSubClass = 1,
2446 .bInterfaceProtocol = 0,
2447 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2448 /* Quanta USB2.0 HD UVC Webcam */
2449 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2450 | USB_DEVICE_ID_MATCH_INT_INFO,
2451 .idVendor = 0x0408,
2452 .idProduct = 0x4034,
2453 .bInterfaceClass = USB_CLASS_VIDEO,
2454 .bInterfaceSubClass = 1,
2455 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2456 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2457 /* LogiLink Wireless Webcam */
2458 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2459 | USB_DEVICE_ID_MATCH_INT_INFO,
2460 .idVendor = 0x0416,
2461 .idProduct = 0xa91a,
2462 .bInterfaceClass = USB_CLASS_VIDEO,
2463 .bInterfaceSubClass = 1,
2464 .bInterfaceProtocol = 0,
2465 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2466 /* Genius eFace 2025 */
2467 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2468 | USB_DEVICE_ID_MATCH_INT_INFO,
2469 .idVendor = 0x0458,
2470 .idProduct = 0x706e,
2471 .bInterfaceClass = USB_CLASS_VIDEO,
2472 .bInterfaceSubClass = 1,
2473 .bInterfaceProtocol = 0,
2474 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2475 /* Microsoft Lifecam NX-6000 */
2476 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2477 | USB_DEVICE_ID_MATCH_INT_INFO,
2478 .idVendor = 0x045e,
2479 .idProduct = 0x00f8,
2480 .bInterfaceClass = USB_CLASS_VIDEO,
2481 .bInterfaceSubClass = 1,
2482 .bInterfaceProtocol = 0,
2483 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2484 /* Microsoft Lifecam NX-3000 */
2485 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2486 | USB_DEVICE_ID_MATCH_INT_INFO,
2487 .idVendor = 0x045e,
2488 .idProduct = 0x0721,
2489 .bInterfaceClass = USB_CLASS_VIDEO,
2490 .bInterfaceSubClass = 1,
2491 .bInterfaceProtocol = 0,
2492 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2493 /* Microsoft Lifecam VX-7000 */
2494 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2495 | USB_DEVICE_ID_MATCH_INT_INFO,
2496 .idVendor = 0x045e,
2497 .idProduct = 0x0723,
2498 .bInterfaceClass = USB_CLASS_VIDEO,
2499 .bInterfaceSubClass = 1,
2500 .bInterfaceProtocol = 0,
2501 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2502 /* Logitech Quickcam Fusion */
2503 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2504 | USB_DEVICE_ID_MATCH_INT_INFO,
2505 .idVendor = 0x046d,
2506 .idProduct = 0x08c1,
2507 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2508 .bInterfaceSubClass = 1,
2509 .bInterfaceProtocol = 0 },
2510 /* Logitech Quickcam Orbit MP */
2511 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2512 | USB_DEVICE_ID_MATCH_INT_INFO,
2513 .idVendor = 0x046d,
2514 .idProduct = 0x08c2,
2515 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2516 .bInterfaceSubClass = 1,
2517 .bInterfaceProtocol = 0 },
2518 /* Logitech Quickcam Pro for Notebook */
2519 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2520 | USB_DEVICE_ID_MATCH_INT_INFO,
2521 .idVendor = 0x046d,
2522 .idProduct = 0x08c3,
2523 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2524 .bInterfaceSubClass = 1,
2525 .bInterfaceProtocol = 0 },
2526 /* Logitech Quickcam Pro 5000 */
2527 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2528 | USB_DEVICE_ID_MATCH_INT_INFO,
2529 .idVendor = 0x046d,
2530 .idProduct = 0x08c5,
2531 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2532 .bInterfaceSubClass = 1,
2533 .bInterfaceProtocol = 0 },
2534 /* Logitech Quickcam OEM Dell Notebook */
2535 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2536 | USB_DEVICE_ID_MATCH_INT_INFO,
2537 .idVendor = 0x046d,
2538 .idProduct = 0x08c6,
2539 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2540 .bInterfaceSubClass = 1,
2541 .bInterfaceProtocol = 0 },
2542 /* Logitech Quickcam OEM Cisco VT Camera II */
2543 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2544 | USB_DEVICE_ID_MATCH_INT_INFO,
2545 .idVendor = 0x046d,
2546 .idProduct = 0x08c7,
2547 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2548 .bInterfaceSubClass = 1,
2549 .bInterfaceProtocol = 0 },
2550 /* Logitech HD Pro Webcam C920 */
2551 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2552 | USB_DEVICE_ID_MATCH_INT_INFO,
2553 .idVendor = 0x046d,
2554 .idProduct = 0x082d,
2555 .bInterfaceClass = USB_CLASS_VIDEO,
2556 .bInterfaceSubClass = 1,
2557 .bInterfaceProtocol = 0,
2558 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
2559 /* Chicony CNF7129 (Asus EEE 100HE) */
2560 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2561 | USB_DEVICE_ID_MATCH_INT_INFO,
2562 .idVendor = 0x04f2,
2563 .idProduct = 0xb071,
2564 .bInterfaceClass = USB_CLASS_VIDEO,
2565 .bInterfaceSubClass = 1,
2566 .bInterfaceProtocol = 0,
2567 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2568 /* Chicony EasyCamera */
2569 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2570 | USB_DEVICE_ID_MATCH_INT_INFO,
2571 .idVendor = 0x04f2,
2572 .idProduct = 0xb5eb,
2573 .bInterfaceClass = USB_CLASS_VIDEO,
2574 .bInterfaceSubClass = 1,
2575 .bInterfaceProtocol = 0,
2576 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2577 /* Chicony EasyCamera */
2578 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2579 | USB_DEVICE_ID_MATCH_INT_INFO,
2580 .idVendor = 0x04f2,
2581 .idProduct = 0xb6ba,
2582 .bInterfaceClass = USB_CLASS_VIDEO,
2583 .bInterfaceSubClass = 1,
2584 .bInterfaceProtocol = 0,
2585 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2586 /* Chicony EasyCamera */
2587 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2588 | USB_DEVICE_ID_MATCH_INT_INFO,
2589 .idVendor = 0x04f2,
2590 .idProduct = 0xb746,
2591 .bInterfaceClass = USB_CLASS_VIDEO,
2592 .bInterfaceSubClass = 1,
2593 .bInterfaceProtocol = 0,
2594 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2595 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2596 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2597 | USB_DEVICE_ID_MATCH_INT_INFO,
2598 .idVendor = 0x058f,
2599 .idProduct = 0x3820,
2600 .bInterfaceClass = USB_CLASS_VIDEO,
2601 .bInterfaceSubClass = 1,
2602 .bInterfaceProtocol = 0,
2603 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2604 /* Dell XPS m1530 */
2605 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2606 | USB_DEVICE_ID_MATCH_INT_INFO,
2607 .idVendor = 0x05a9,
2608 .idProduct = 0x2640,
2609 .bInterfaceClass = USB_CLASS_VIDEO,
2610 .bInterfaceSubClass = 1,
2611 .bInterfaceProtocol = 0,
2612 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2613 /* Dell SP2008WFP Monitor */
2614 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2615 | USB_DEVICE_ID_MATCH_INT_INFO,
2616 .idVendor = 0x05a9,
2617 .idProduct = 0x2641,
2618 .bInterfaceClass = USB_CLASS_VIDEO,
2619 .bInterfaceSubClass = 1,
2620 .bInterfaceProtocol = 0,
2621 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2622 /* Dell Alienware X51 */
2623 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2624 | USB_DEVICE_ID_MATCH_INT_INFO,
2625 .idVendor = 0x05a9,
2626 .idProduct = 0x2643,
2627 .bInterfaceClass = USB_CLASS_VIDEO,
2628 .bInterfaceSubClass = 1,
2629 .bInterfaceProtocol = 0,
2630 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2631 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2632 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2633 | USB_DEVICE_ID_MATCH_INT_INFO,
2634 .idVendor = 0x05a9,
2635 .idProduct = 0x264a,
2636 .bInterfaceClass = USB_CLASS_VIDEO,
2637 .bInterfaceSubClass = 1,
2638 .bInterfaceProtocol = 0,
2639 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2640 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2641 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2642 | USB_DEVICE_ID_MATCH_INT_INFO,
2643 .idVendor = 0x05a9,
2644 .idProduct = 0x7670,
2645 .bInterfaceClass = USB_CLASS_VIDEO,
2646 .bInterfaceSubClass = 1,
2647 .bInterfaceProtocol = 0,
2648 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2649 /* Apple Built-In iSight */
2650 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2651 | USB_DEVICE_ID_MATCH_INT_INFO,
2652 .idVendor = 0x05ac,
2653 .idProduct = 0x8501,
2654 .bInterfaceClass = USB_CLASS_VIDEO,
2655 .bInterfaceSubClass = 1,
2656 .bInterfaceProtocol = 0,
2657 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2658 | UVC_QUIRK_BUILTIN_ISIGHT) },
2659 /* Apple FaceTime HD Camera (Built-In) */
2660 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2661 | USB_DEVICE_ID_MATCH_INT_INFO,
2662 .idVendor = 0x05ac,
2663 .idProduct = 0x8514,
2664 .bInterfaceClass = USB_CLASS_VIDEO,
2665 .bInterfaceSubClass = 1,
2666 .bInterfaceProtocol = 0,
2667 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2668 /* Apple Built-In iSight via iBridge */
2669 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2670 | USB_DEVICE_ID_MATCH_INT_INFO,
2671 .idVendor = 0x05ac,
2672 .idProduct = 0x8600,
2673 .bInterfaceClass = USB_CLASS_VIDEO,
2674 .bInterfaceSubClass = 1,
2675 .bInterfaceProtocol = 0,
2676 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2677 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2678 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2679 | USB_DEVICE_ID_MATCH_INT_INFO,
2680 .idVendor = 0x05c8,
2681 .idProduct = 0x0403,
2682 .bInterfaceClass = USB_CLASS_VIDEO,
2683 .bInterfaceSubClass = 1,
2684 .bInterfaceProtocol = 0,
2685 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2686 /* Genesys Logic USB 2.0 PC Camera */
2687 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2688 | USB_DEVICE_ID_MATCH_INT_INFO,
2689 .idVendor = 0x05e3,
2690 .idProduct = 0x0505,
2691 .bInterfaceClass = USB_CLASS_VIDEO,
2692 .bInterfaceSubClass = 1,
2693 .bInterfaceProtocol = 0,
2694 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2695 /* Hercules Classic Silver */
2696 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2697 | USB_DEVICE_ID_MATCH_INT_INFO,
2698 .idVendor = 0x06f8,
2699 .idProduct = 0x300c,
2700 .bInterfaceClass = USB_CLASS_VIDEO,
2701 .bInterfaceSubClass = 1,
2702 .bInterfaceProtocol = 0,
2703 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2704 /* ViMicro Vega */
2705 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2706 | USB_DEVICE_ID_MATCH_INT_INFO,
2707 .idVendor = 0x0ac8,
2708 .idProduct = 0x332d,
2709 .bInterfaceClass = USB_CLASS_VIDEO,
2710 .bInterfaceSubClass = 1,
2711 .bInterfaceProtocol = 0,
2712 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2713 /* ViMicro - Minoru3D */
2714 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2715 | USB_DEVICE_ID_MATCH_INT_INFO,
2716 .idVendor = 0x0ac8,
2717 .idProduct = 0x3410,
2718 .bInterfaceClass = USB_CLASS_VIDEO,
2719 .bInterfaceSubClass = 1,
2720 .bInterfaceProtocol = 0,
2721 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2722 /* ViMicro Venus - Minoru3D */
2723 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2724 | USB_DEVICE_ID_MATCH_INT_INFO,
2725 .idVendor = 0x0ac8,
2726 .idProduct = 0x3420,
2727 .bInterfaceClass = USB_CLASS_VIDEO,
2728 .bInterfaceSubClass = 1,
2729 .bInterfaceProtocol = 0,
2730 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2731 /* Ophir Optronics - SPCAM 620U */
2732 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2733 | USB_DEVICE_ID_MATCH_INT_INFO,
2734 .idVendor = 0x0bd3,
2735 .idProduct = 0x0555,
2736 .bInterfaceClass = USB_CLASS_VIDEO,
2737 .bInterfaceSubClass = 1,
2738 .bInterfaceProtocol = 0,
2739 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2740 /* MT6227 */
2741 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2742 | USB_DEVICE_ID_MATCH_INT_INFO,
2743 .idVendor = 0x0e8d,
2744 .idProduct = 0x0004,
2745 .bInterfaceClass = USB_CLASS_VIDEO,
2746 .bInterfaceSubClass = 1,
2747 .bInterfaceProtocol = 0,
2748 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2749 | UVC_QUIRK_PROBE_DEF) },
2750 /* IMC Networks (Medion Akoya) */
2751 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2752 | USB_DEVICE_ID_MATCH_INT_INFO,
2753 .idVendor = 0x13d3,
2754 .idProduct = 0x5103,
2755 .bInterfaceClass = USB_CLASS_VIDEO,
2756 .bInterfaceSubClass = 1,
2757 .bInterfaceProtocol = 0,
2758 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2759 /* JMicron USB2.0 XGA WebCam */
2760 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2761 | USB_DEVICE_ID_MATCH_INT_INFO,
2762 .idVendor = 0x152d,
2763 .idProduct = 0x0310,
2764 .bInterfaceClass = USB_CLASS_VIDEO,
2765 .bInterfaceSubClass = 1,
2766 .bInterfaceProtocol = 0,
2767 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2768 /* Syntek (HP Spartan) */
2769 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2770 | USB_DEVICE_ID_MATCH_INT_INFO,
2771 .idVendor = 0x174f,
2772 .idProduct = 0x5212,
2773 .bInterfaceClass = USB_CLASS_VIDEO,
2774 .bInterfaceSubClass = 1,
2775 .bInterfaceProtocol = 0,
2776 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2777 /* Syntek (Samsung Q310) */
2778 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2779 | USB_DEVICE_ID_MATCH_INT_INFO,
2780 .idVendor = 0x174f,
2781 .idProduct = 0x5931,
2782 .bInterfaceClass = USB_CLASS_VIDEO,
2783 .bInterfaceSubClass = 1,
2784 .bInterfaceProtocol = 0,
2785 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2786 /* Syntek (Packard Bell EasyNote MX52 */
2787 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2788 | USB_DEVICE_ID_MATCH_INT_INFO,
2789 .idVendor = 0x174f,
2790 .idProduct = 0x8a12,
2791 .bInterfaceClass = USB_CLASS_VIDEO,
2792 .bInterfaceSubClass = 1,
2793 .bInterfaceProtocol = 0,
2794 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2795 /* Syntek (Asus F9SG) */
2796 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2797 | USB_DEVICE_ID_MATCH_INT_INFO,
2798 .idVendor = 0x174f,
2799 .idProduct = 0x8a31,
2800 .bInterfaceClass = USB_CLASS_VIDEO,
2801 .bInterfaceSubClass = 1,
2802 .bInterfaceProtocol = 0,
2803 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2804 /* Syntek (Asus U3S) */
2805 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2806 | USB_DEVICE_ID_MATCH_INT_INFO,
2807 .idVendor = 0x174f,
2808 .idProduct = 0x8a33,
2809 .bInterfaceClass = USB_CLASS_VIDEO,
2810 .bInterfaceSubClass = 1,
2811 .bInterfaceProtocol = 0,
2812 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2813 /* Syntek (JAOtech Smart Terminal) */
2814 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2815 | USB_DEVICE_ID_MATCH_INT_INFO,
2816 .idVendor = 0x174f,
2817 .idProduct = 0x8a34,
2818 .bInterfaceClass = USB_CLASS_VIDEO,
2819 .bInterfaceSubClass = 1,
2820 .bInterfaceProtocol = 0,
2821 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2822 /* Miricle 307K */
2823 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2824 | USB_DEVICE_ID_MATCH_INT_INFO,
2825 .idVendor = 0x17dc,
2826 .idProduct = 0x0202,
2827 .bInterfaceClass = USB_CLASS_VIDEO,
2828 .bInterfaceSubClass = 1,
2829 .bInterfaceProtocol = 0,
2830 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2831 /* Lenovo Thinkpad SL400/SL500 */
2832 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2833 | USB_DEVICE_ID_MATCH_INT_INFO,
2834 .idVendor = 0x17ef,
2835 .idProduct = 0x480b,
2836 .bInterfaceClass = USB_CLASS_VIDEO,
2837 .bInterfaceSubClass = 1,
2838 .bInterfaceProtocol = 0,
2839 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2840 /* Aveo Technology USB 2.0 Camera */
2841 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2842 | USB_DEVICE_ID_MATCH_INT_INFO,
2843 .idVendor = 0x1871,
2844 .idProduct = 0x0306,
2845 .bInterfaceClass = USB_CLASS_VIDEO,
2846 .bInterfaceSubClass = 1,
2847 .bInterfaceProtocol = 0,
2848 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2849 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2850 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2851 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2852 | USB_DEVICE_ID_MATCH_INT_INFO,
2853 .idVendor = 0x1871,
2854 .idProduct = 0x0516,
2855 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2856 .bInterfaceSubClass = 1,
2857 .bInterfaceProtocol = 0 },
2858 /* Ecamm Pico iMage */
2859 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2860 | USB_DEVICE_ID_MATCH_INT_INFO,
2861 .idVendor = 0x18cd,
2862 .idProduct = 0xcafe,
2863 .bInterfaceClass = USB_CLASS_VIDEO,
2864 .bInterfaceSubClass = 1,
2865 .bInterfaceProtocol = 0,
2866 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2867 /* Manta MM-353 Plako */
2868 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2869 | USB_DEVICE_ID_MATCH_INT_INFO,
2870 .idVendor = 0x18ec,
2871 .idProduct = 0x3188,
2872 .bInterfaceClass = USB_CLASS_VIDEO,
2873 .bInterfaceSubClass = 1,
2874 .bInterfaceProtocol = 0,
2875 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2876 /* FSC WebCam V30S */
2877 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2878 | USB_DEVICE_ID_MATCH_INT_INFO,
2879 .idVendor = 0x18ec,
2880 .idProduct = 0x3288,
2881 .bInterfaceClass = USB_CLASS_VIDEO,
2882 .bInterfaceSubClass = 1,
2883 .bInterfaceProtocol = 0,
2884 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2885 /* Arkmicro unbranded */
2886 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2887 | USB_DEVICE_ID_MATCH_INT_INFO,
2888 .idVendor = 0x18ec,
2889 .idProduct = 0x3290,
2890 .bInterfaceClass = USB_CLASS_VIDEO,
2891 .bInterfaceSubClass = 1,
2892 .bInterfaceProtocol = 0,
2893 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2894 /* The Imaging Source USB CCD cameras */
2895 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2896 | USB_DEVICE_ID_MATCH_INT_INFO,
2897 .idVendor = 0x199e,
2898 .idProduct = 0x8102,
2899 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2900 .bInterfaceSubClass = 1,
2901 .bInterfaceProtocol = 0 },
2902 /* Bodelin ProScopeHR */
2903 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2904 | USB_DEVICE_ID_MATCH_DEV_HI
2905 | USB_DEVICE_ID_MATCH_INT_INFO,
2906 .idVendor = 0x19ab,
2907 .idProduct = 0x1000,
2908 .bcdDevice_hi = 0x0126,
2909 .bInterfaceClass = USB_CLASS_VIDEO,
2910 .bInterfaceSubClass = 1,
2911 .bInterfaceProtocol = 0,
2912 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
2913 /* MSI StarCam 370i */
2914 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2915 | USB_DEVICE_ID_MATCH_INT_INFO,
2916 .idVendor = 0x1b3b,
2917 .idProduct = 0x2951,
2918 .bInterfaceClass = USB_CLASS_VIDEO,
2919 .bInterfaceSubClass = 1,
2920 .bInterfaceProtocol = 0,
2921 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2922 /* Generalplus Technology Inc. 808 Camera */
2923 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2924 | USB_DEVICE_ID_MATCH_INT_INFO,
2925 .idVendor = 0x1b3f,
2926 .idProduct = 0x2002,
2927 .bInterfaceClass = USB_CLASS_VIDEO,
2928 .bInterfaceSubClass = 1,
2929 .bInterfaceProtocol = 0,
2930 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2931 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */
2932 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2933 | USB_DEVICE_ID_MATCH_INT_INFO,
2934 .idVendor = 0x1bcf,
2935 .idProduct = 0x0b40,
2936 .bInterfaceClass = USB_CLASS_VIDEO,
2937 .bInterfaceSubClass = 1,
2938 .bInterfaceProtocol = 0,
2939 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2940 .uvc_version = 0x010a,
2941 } },
2942 /* SiGma Micro USB Web Camera */
2943 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2944 | USB_DEVICE_ID_MATCH_INT_INFO,
2945 .idVendor = 0x1c4f,
2946 .idProduct = 0x3000,
2947 .bInterfaceClass = USB_CLASS_VIDEO,
2948 .bInterfaceSubClass = 1,
2949 .bInterfaceProtocol = 0,
2950 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2951 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
2952 /* Oculus VR Positional Tracker DK2 */
2953 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2954 | USB_DEVICE_ID_MATCH_INT_INFO,
2955 .idVendor = 0x2833,
2956 .idProduct = 0x0201,
2957 .bInterfaceClass = USB_CLASS_VIDEO,
2958 .bInterfaceSubClass = 1,
2959 .bInterfaceProtocol = 0,
2960 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
2961 /* Oculus VR Rift Sensor */
2962 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2963 | USB_DEVICE_ID_MATCH_INT_INFO,
2964 .idVendor = 0x2833,
2965 .idProduct = 0x0211,
2966 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2967 .bInterfaceSubClass = 1,
2968 .bInterfaceProtocol = 0,
2969 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
2970 /* GEO Semiconductor GC6500 */
2971 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2972 | USB_DEVICE_ID_MATCH_INT_INFO,
2973 .idVendor = 0x29fe,
2974 .idProduct = 0x4d53,
2975 .bInterfaceClass = USB_CLASS_VIDEO,
2976 .bInterfaceSubClass = 1,
2977 .bInterfaceProtocol = 0,
2978 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
2979 /* Sonix Technology USB 2.0 Camera */
2980 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2981 | USB_DEVICE_ID_MATCH_INT_INFO,
2982 .idVendor = 0x3277,
2983 .idProduct = 0x0072,
2984 .bInterfaceClass = USB_CLASS_VIDEO,
2985 .bInterfaceSubClass = 1,
2986 .bInterfaceProtocol = 0,
2987 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2988 /* Acer EasyCamera */
2989 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2990 | USB_DEVICE_ID_MATCH_INT_INFO,
2991 .idVendor = 0x5986,
2992 .idProduct = 0x1172,
2993 .bInterfaceClass = USB_CLASS_VIDEO,
2994 .bInterfaceSubClass = 1,
2995 .bInterfaceProtocol = 0,
2996 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2997 /* Intel RealSense D4M */
2998 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2999 | USB_DEVICE_ID_MATCH_INT_INFO,
3000 .idVendor = 0x8086,
3001 .idProduct = 0x0b03,
3002 .bInterfaceClass = USB_CLASS_VIDEO,
3003 .bInterfaceSubClass = 1,
3004 .bInterfaceProtocol = 0,
3005 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3006 /* Generic USB Video Class */
3007 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3008 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3009 {}
3010 };
3011
3012 MODULE_DEVICE_TABLE(usb, uvc_ids);
3013
3014 struct uvc_driver uvc_driver = {
3015 .driver = {
3016 .name = "uvcvideo",
3017 .probe = uvc_probe,
3018 .disconnect = uvc_disconnect,
3019 .suspend = uvc_suspend,
3020 .resume = uvc_resume,
3021 .reset_resume = uvc_reset_resume,
3022 .id_table = uvc_ids,
3023 .supports_autosuspend = 1,
3024 },
3025 };
3026
uvc_init(void)3027 static int __init uvc_init(void)
3028 {
3029 int ret;
3030
3031 uvc_debugfs_init();
3032
3033 ret = usb_register(&uvc_driver.driver);
3034 if (ret < 0) {
3035 uvc_debugfs_cleanup();
3036 return ret;
3037 }
3038
3039 return 0;
3040 }
3041
uvc_cleanup(void)3042 static void __exit uvc_cleanup(void)
3043 {
3044 usb_deregister(&uvc_driver.driver);
3045 uvc_debugfs_cleanup();
3046 }
3047
3048 module_init(uvc_init);
3049 module_exit(uvc_cleanup);
3050
3051 MODULE_AUTHOR(DRIVER_AUTHOR);
3052 MODULE_DESCRIPTION(DRIVER_DESC);
3053 MODULE_LICENSE("GPL");
3054 MODULE_VERSION(DRIVER_VERSION);
3055
3056
