1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * uvc_driver.c -- USB Video Class driver
4 *
5 * Copyright (C) 2005-2010
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 */
8
9 #include <linux/atomic.h>
10 #include <linux/bits.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/kernel.h>
13 #include <linux/list.h>
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/usb.h>
17 #include <linux/usb/uvc.h>
18 #include <linux/videodev2.h>
19 #include <linux/vmalloc.h>
20 #include <linux/wait.h>
21 #include <asm/unaligned.h>
22
23 #include <media/v4l2-common.h>
24 #include <media/v4l2-ioctl.h>
25
26 #include "uvcvideo.h"
27
28 #define DRIVER_AUTHOR "Laurent Pinchart " \
29 "<laurent.pinchart@ideasonboard.com>"
30 #define DRIVER_DESC "USB Video Class driver"
31
32 unsigned int uvc_clock_param = CLOCK_MONOTONIC;
33 unsigned int uvc_hw_timestamps_param;
34 unsigned int uvc_no_drop_param;
35 static unsigned int uvc_quirks_param = -1;
36 unsigned int uvc_dbg_param;
37 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
38
39 /* ------------------------------------------------------------------------
40 * Utility functions
41 */
42
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)43 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
44 u8 epaddr)
45 {
46 struct usb_host_endpoint *ep;
47 unsigned int i;
48
49 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
50 ep = &alts->endpoint[i];
51 if (ep->desc.bEndpointAddress == epaddr)
52 return ep;
53 }
54
55 return NULL;
56 }
57
uvc_colorspace(const u8 primaries)58 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
59 {
60 static const enum v4l2_colorspace colorprimaries[] = {
61 V4L2_COLORSPACE_SRGB, /* Unspecified */
62 V4L2_COLORSPACE_SRGB,
63 V4L2_COLORSPACE_470_SYSTEM_M,
64 V4L2_COLORSPACE_470_SYSTEM_BG,
65 V4L2_COLORSPACE_SMPTE170M,
66 V4L2_COLORSPACE_SMPTE240M,
67 };
68
69 if (primaries < ARRAY_SIZE(colorprimaries))
70 return colorprimaries[primaries];
71
72 return V4L2_COLORSPACE_SRGB; /* Reserved */
73 }
74
uvc_xfer_func(const u8 transfer_characteristics)75 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
76 {
77 /*
78 * V4L2 does not currently have definitions for all possible values of
79 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
80 * values, the mapping below should be updated.
81 *
82 * Substitutions are taken from the mapping given for
83 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
84 */
85 static const enum v4l2_xfer_func xfer_funcs[] = {
86 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
87 V4L2_XFER_FUNC_709,
88 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
89 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
90 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
91 V4L2_XFER_FUNC_SMPTE240M,
92 V4L2_XFER_FUNC_NONE,
93 V4L2_XFER_FUNC_SRGB,
94 };
95
96 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
97 return xfer_funcs[transfer_characteristics];
98
99 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
100 }
101
uvc_ycbcr_enc(const u8 matrix_coefficients)102 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
103 {
104 /*
105 * V4L2 does not currently have definitions for all possible values of
106 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
107 * values, the mapping below should be updated.
108 *
109 * Substitutions are taken from the mapping given for
110 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
111 *
112 * FCC is assumed to be close enough to 601.
113 */
114 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
115 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
116 V4L2_YCBCR_ENC_709,
117 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
118 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
119 V4L2_YCBCR_ENC_601,
120 V4L2_YCBCR_ENC_SMPTE240M,
121 };
122
123 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
124 return ycbcr_encs[matrix_coefficients];
125
126 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
127 }
128
129 /* ------------------------------------------------------------------------
130 * Terminal and unit management
131 */
132
uvc_entity_by_id(struct uvc_device * dev,int id)133 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
134 {
135 struct uvc_entity *entity;
136
137 list_for_each_entry(entity, &dev->entities, list) {
138 if (entity->id == id)
139 return entity;
140 }
141
142 return NULL;
143 }
144
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)145 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
146 int id, struct uvc_entity *entity)
147 {
148 unsigned int i;
149
150 if (entity == NULL)
151 entity = list_entry(&dev->entities, struct uvc_entity, list);
152
153 list_for_each_entry_continue(entity, &dev->entities, list) {
154 for (i = 0; i < entity->bNrInPins; ++i)
155 if (entity->baSourceID[i] == id)
156 return entity;
157 }
158
159 return NULL;
160 }
161
uvc_stream_by_id(struct uvc_device * dev,int id)162 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
163 {
164 struct uvc_streaming *stream;
165
166 list_for_each_entry(stream, &dev->streams, list) {
167 if (stream->header.bTerminalLink == id)
168 return stream;
169 }
170
171 return NULL;
172 }
173
174 /* ------------------------------------------------------------------------
175 * Streaming Object Management
176 */
177
uvc_stream_delete(struct uvc_streaming * stream)178 static void uvc_stream_delete(struct uvc_streaming *stream)
179 {
180 if (stream->async_wq)
181 destroy_workqueue(stream->async_wq);
182
183 mutex_destroy(&stream->mutex);
184
185 usb_put_intf(stream->intf);
186
187 kfree(stream->formats);
188 kfree(stream->header.bmaControls);
189 kfree(stream);
190 }
191
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)192 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
193 struct usb_interface *intf)
194 {
195 struct uvc_streaming *stream;
196
197 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
198 if (stream == NULL)
199 return NULL;
200
201 mutex_init(&stream->mutex);
202
203 stream->dev = dev;
204 stream->intf = usb_get_intf(intf);
205 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
206
207 /* Allocate a stream specific work queue for asynchronous tasks. */
208 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
209 0);
210 if (!stream->async_wq) {
211 uvc_stream_delete(stream);
212 return NULL;
213 }
214
215 return stream;
216 }
217
218 /* ------------------------------------------------------------------------
219 * Descriptors parsing
220 */
221
uvc_parse_format(struct uvc_device * dev,struct uvc_streaming * streaming,struct uvc_format * format,struct uvc_frame * frames,u32 ** intervals,const unsigned char * buffer,int buflen)222 static int uvc_parse_format(struct uvc_device *dev,
223 struct uvc_streaming *streaming, struct uvc_format *format,
224 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer,
225 int buflen)
226 {
227 struct usb_interface *intf = streaming->intf;
228 struct usb_host_interface *alts = intf->cur_altsetting;
229 const struct uvc_format_desc *fmtdesc;
230 struct uvc_frame *frame;
231 const unsigned char *start = buffer;
232 unsigned int width_multiplier = 1;
233 unsigned int interval;
234 unsigned int i, n;
235 u8 ftype;
236
237 format->type = buffer[2];
238 format->index = buffer[3];
239 format->frames = frames;
240
241 switch (buffer[2]) {
242 case UVC_VS_FORMAT_UNCOMPRESSED:
243 case UVC_VS_FORMAT_FRAME_BASED:
244 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
245 if (buflen < n) {
246 uvc_dbg(dev, DESCR,
247 "device %d videostreaming interface %d FORMAT error\n",
248 dev->udev->devnum,
249 alts->desc.bInterfaceNumber);
250 return -EINVAL;
251 }
252
253 /* Find the format descriptor from its GUID. */
254 fmtdesc = uvc_format_by_guid(&buffer[5]);
255
256 if (!fmtdesc) {
257 /*
258 * Unknown video formats are not fatal errors, the
259 * caller will skip this descriptor.
260 */
261 dev_info(&streaming->intf->dev,
262 "Unknown video format %pUl\n", &buffer[5]);
263 return 0;
264 }
265
266 format->fcc = fmtdesc->fcc;
267 format->bpp = buffer[21];
268
269 /*
270 * Some devices report a format that doesn't match what they
271 * really send.
272 */
273 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
274 if (format->fcc == V4L2_PIX_FMT_YUYV) {
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 format->fcc = V4L2_PIX_FMT_MJPEG;
316 format->flags = UVC_FMT_FLAG_COMPRESSED;
317 format->bpp = 0;
318 ftype = UVC_VS_FRAME_MJPEG;
319 break;
320
321 case UVC_VS_FORMAT_DV:
322 if (buflen < 9) {
323 uvc_dbg(dev, DESCR,
324 "device %d videostreaming interface %d FORMAT error\n",
325 dev->udev->devnum,
326 alts->desc.bInterfaceNumber);
327 return -EINVAL;
328 }
329
330 if ((buffer[8] & 0x7f) > 2) {
331 uvc_dbg(dev, DESCR,
332 "device %d videostreaming interface %d: unknown DV format %u\n",
333 dev->udev->devnum,
334 alts->desc.bInterfaceNumber, buffer[8]);
335 return -EINVAL;
336 }
337
338 format->fcc = V4L2_PIX_FMT_DV;
339 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
340 format->bpp = 0;
341 ftype = 0;
342
343 /* Create a dummy frame descriptor. */
344 frame = &frames[0];
345 memset(frame, 0, sizeof(*frame));
346 frame->bFrameIntervalType = 1;
347 frame->dwDefaultFrameInterval = 1;
348 frame->dwFrameInterval = *intervals;
349 *(*intervals)++ = 1;
350 format->nframes = 1;
351 break;
352
353 case UVC_VS_FORMAT_MPEG2TS:
354 case UVC_VS_FORMAT_STREAM_BASED:
355 /* Not supported yet. */
356 default:
357 uvc_dbg(dev, DESCR,
358 "device %d videostreaming interface %d unsupported format %u\n",
359 dev->udev->devnum, alts->desc.bInterfaceNumber,
360 buffer[2]);
361 return -EINVAL;
362 }
363
364 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc);
365
366 buflen -= buffer[0];
367 buffer += buffer[0];
368
369 /*
370 * Parse the frame descriptors. Only uncompressed, MJPEG and frame
371 * based formats have frame descriptors.
372 */
373 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
374 buffer[2] == ftype) {
375 unsigned int maxIntervalIndex;
376
377 frame = &frames[format->nframes];
378 if (ftype != UVC_VS_FRAME_FRAME_BASED)
379 n = buflen > 25 ? buffer[25] : 0;
380 else
381 n = buflen > 21 ? buffer[21] : 0;
382
383 n = n ? n : 3;
384
385 if (buflen < 26 + 4*n) {
386 uvc_dbg(dev, DESCR,
387 "device %d videostreaming interface %d FRAME error\n",
388 dev->udev->devnum,
389 alts->desc.bInterfaceNumber);
390 return -EINVAL;
391 }
392
393 frame->bFrameIndex = buffer[3];
394 frame->bmCapabilities = buffer[4];
395 frame->wWidth = get_unaligned_le16(&buffer[5])
396 * width_multiplier;
397 frame->wHeight = get_unaligned_le16(&buffer[7]);
398 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
399 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
400 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
401 frame->dwMaxVideoFrameBufferSize =
402 get_unaligned_le32(&buffer[17]);
403 frame->dwDefaultFrameInterval =
404 get_unaligned_le32(&buffer[21]);
405 frame->bFrameIntervalType = buffer[25];
406 } else {
407 frame->dwMaxVideoFrameBufferSize = 0;
408 frame->dwDefaultFrameInterval =
409 get_unaligned_le32(&buffer[17]);
410 frame->bFrameIntervalType = buffer[21];
411 }
412
413 /*
414 * Copy the frame intervals.
415 *
416 * Some bogus devices report dwMinFrameInterval equal to
417 * dwMaxFrameInterval and have dwFrameIntervalStep set to
418 * zero. Setting all null intervals to 1 fixes the problem and
419 * some other divisions by zero that could happen.
420 */
421 frame->dwFrameInterval = *intervals;
422
423 for (i = 0; i < n; ++i) {
424 interval = get_unaligned_le32(&buffer[26+4*i]);
425 (*intervals)[i] = interval ? interval : 1;
426 }
427
428 /*
429 * Apply more fixes, quirks and workarounds to handle incorrect
430 * or broken descriptors.
431 */
432
433 /*
434 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize
435 * completely. Observed behaviours range from setting the
436 * value to 1.1x the actual frame size to hardwiring the
437 * 16 low bits to 0. This results in a higher than necessary
438 * memory usage as well as a wrong image size information. For
439 * uncompressed formats this can be fixed by computing the
440 * value from the frame size.
441 */
442 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
443 frame->dwMaxVideoFrameBufferSize = format->bpp
444 * frame->wWidth * frame->wHeight / 8;
445
446 /*
447 * Clamp the default frame interval to the boundaries. A zero
448 * bFrameIntervalType value indicates a continuous frame
449 * interval range, with dwFrameInterval[0] storing the minimum
450 * value and dwFrameInterval[1] storing the maximum value.
451 */
452 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1;
453 frame->dwDefaultFrameInterval =
454 clamp(frame->dwDefaultFrameInterval,
455 frame->dwFrameInterval[0],
456 frame->dwFrameInterval[maxIntervalIndex]);
457
458 /*
459 * Some devices report frame intervals that are not functional.
460 * If the corresponding quirk is set, restrict operation to the
461 * first interval only.
462 */
463 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
464 frame->bFrameIntervalType = 1;
465 (*intervals)[0] = frame->dwDefaultFrameInterval;
466 }
467
468 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
469 frame->wWidth, frame->wHeight,
470 10000000 / frame->dwDefaultFrameInterval,
471 (100000000 / frame->dwDefaultFrameInterval) % 10);
472
473 format->nframes++;
474 *intervals += n;
475
476 buflen -= buffer[0];
477 buffer += buffer[0];
478 }
479
480 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
481 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
482 buflen -= buffer[0];
483 buffer += buffer[0];
484 }
485
486 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
487 buffer[2] == UVC_VS_COLORFORMAT) {
488 if (buflen < 6) {
489 uvc_dbg(dev, DESCR,
490 "device %d videostreaming interface %d COLORFORMAT error\n",
491 dev->udev->devnum,
492 alts->desc.bInterfaceNumber);
493 return -EINVAL;
494 }
495
496 format->colorspace = uvc_colorspace(buffer[3]);
497 format->xfer_func = uvc_xfer_func(buffer[4]);
498 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
499
500 buflen -= buffer[0];
501 buffer += buffer[0];
502 } else {
503 format->colorspace = V4L2_COLORSPACE_SRGB;
504 }
505
506 return buffer - start;
507 }
508
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)509 static int uvc_parse_streaming(struct uvc_device *dev,
510 struct usb_interface *intf)
511 {
512 struct uvc_streaming *streaming = NULL;
513 struct uvc_format *format;
514 struct uvc_frame *frame;
515 struct usb_host_interface *alts = &intf->altsetting[0];
516 const unsigned char *_buffer, *buffer = alts->extra;
517 int _buflen, buflen = alts->extralen;
518 unsigned int nformats = 0, nframes = 0, nintervals = 0;
519 unsigned int size, i, n, p;
520 u32 *interval;
521 u16 psize;
522 int ret = -EINVAL;
523
524 if (intf->cur_altsetting->desc.bInterfaceSubClass
525 != UVC_SC_VIDEOSTREAMING) {
526 uvc_dbg(dev, DESCR,
527 "device %d interface %d isn't a video streaming interface\n",
528 dev->udev->devnum,
529 intf->altsetting[0].desc.bInterfaceNumber);
530 return -EINVAL;
531 }
532
533 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
534 uvc_dbg(dev, DESCR,
535 "device %d interface %d is already claimed\n",
536 dev->udev->devnum,
537 intf->altsetting[0].desc.bInterfaceNumber);
538 return -EINVAL;
539 }
540
541 streaming = uvc_stream_new(dev, intf);
542 if (streaming == NULL) {
543 usb_driver_release_interface(&uvc_driver.driver, intf);
544 return -ENOMEM;
545 }
546
547 /*
548 * The Pico iMage webcam has its class-specific interface descriptors
549 * after the endpoint descriptors.
550 */
551 if (buflen == 0) {
552 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
553 struct usb_host_endpoint *ep = &alts->endpoint[i];
554
555 if (ep->extralen == 0)
556 continue;
557
558 if (ep->extralen > 2 &&
559 ep->extra[1] == USB_DT_CS_INTERFACE) {
560 uvc_dbg(dev, DESCR,
561 "trying extra data from endpoint %u\n",
562 i);
563 buffer = alts->endpoint[i].extra;
564 buflen = alts->endpoint[i].extralen;
565 break;
566 }
567 }
568 }
569
570 /* Skip the standard interface descriptors. */
571 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
572 buflen -= buffer[0];
573 buffer += buffer[0];
574 }
575
576 if (buflen <= 2) {
577 uvc_dbg(dev, DESCR,
578 "no class-specific streaming interface descriptors found\n");
579 goto error;
580 }
581
582 /* Parse the header descriptor. */
583 switch (buffer[2]) {
584 case UVC_VS_OUTPUT_HEADER:
585 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
586 size = 9;
587 break;
588
589 case UVC_VS_INPUT_HEADER:
590 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
591 size = 13;
592 break;
593
594 default:
595 uvc_dbg(dev, DESCR,
596 "device %d videostreaming interface %d HEADER descriptor not found\n",
597 dev->udev->devnum, alts->desc.bInterfaceNumber);
598 goto error;
599 }
600
601 p = buflen >= 4 ? buffer[3] : 0;
602 n = buflen >= size ? buffer[size-1] : 0;
603
604 if (buflen < size + p*n) {
605 uvc_dbg(dev, DESCR,
606 "device %d videostreaming interface %d HEADER descriptor is invalid\n",
607 dev->udev->devnum, alts->desc.bInterfaceNumber);
608 goto error;
609 }
610
611 streaming->header.bNumFormats = p;
612 streaming->header.bEndpointAddress = buffer[6];
613 if (buffer[2] == UVC_VS_INPUT_HEADER) {
614 streaming->header.bmInfo = buffer[7];
615 streaming->header.bTerminalLink = buffer[8];
616 streaming->header.bStillCaptureMethod = buffer[9];
617 streaming->header.bTriggerSupport = buffer[10];
618 streaming->header.bTriggerUsage = buffer[11];
619 } else {
620 streaming->header.bTerminalLink = buffer[7];
621 }
622 streaming->header.bControlSize = n;
623
624 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
625 GFP_KERNEL);
626 if (streaming->header.bmaControls == NULL) {
627 ret = -ENOMEM;
628 goto error;
629 }
630
631 buflen -= buffer[0];
632 buffer += buffer[0];
633
634 _buffer = buffer;
635 _buflen = buflen;
636
637 /* Count the format and frame descriptors. */
638 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
639 switch (_buffer[2]) {
640 case UVC_VS_FORMAT_UNCOMPRESSED:
641 case UVC_VS_FORMAT_MJPEG:
642 case UVC_VS_FORMAT_FRAME_BASED:
643 nformats++;
644 break;
645
646 case UVC_VS_FORMAT_DV:
647 /*
648 * DV format has no frame descriptor. We will create a
649 * dummy frame descriptor with a dummy frame interval.
650 */
651 nformats++;
652 nframes++;
653 nintervals++;
654 break;
655
656 case UVC_VS_FORMAT_MPEG2TS:
657 case UVC_VS_FORMAT_STREAM_BASED:
658 uvc_dbg(dev, DESCR,
659 "device %d videostreaming interface %d FORMAT %u is not supported\n",
660 dev->udev->devnum,
661 alts->desc.bInterfaceNumber, _buffer[2]);
662 break;
663
664 case UVC_VS_FRAME_UNCOMPRESSED:
665 case UVC_VS_FRAME_MJPEG:
666 nframes++;
667 if (_buflen > 25)
668 nintervals += _buffer[25] ? _buffer[25] : 3;
669 break;
670
671 case UVC_VS_FRAME_FRAME_BASED:
672 nframes++;
673 if (_buflen > 21)
674 nintervals += _buffer[21] ? _buffer[21] : 3;
675 break;
676 }
677
678 _buflen -= _buffer[0];
679 _buffer += _buffer[0];
680 }
681
682 if (nformats == 0) {
683 uvc_dbg(dev, DESCR,
684 "device %d videostreaming interface %d has no supported formats defined\n",
685 dev->udev->devnum, alts->desc.bInterfaceNumber);
686 goto error;
687 }
688
689 size = nformats * sizeof(*format) + nframes * sizeof(*frame)
690 + nintervals * sizeof(*interval);
691 format = kzalloc(size, GFP_KERNEL);
692 if (format == NULL) {
693 ret = -ENOMEM;
694 goto error;
695 }
696
697 frame = (struct uvc_frame *)&format[nformats];
698 interval = (u32 *)&frame[nframes];
699
700 streaming->formats = format;
701 streaming->nformats = 0;
702
703 /* Parse the format descriptors. */
704 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
705 switch (buffer[2]) {
706 case UVC_VS_FORMAT_UNCOMPRESSED:
707 case UVC_VS_FORMAT_MJPEG:
708 case UVC_VS_FORMAT_DV:
709 case UVC_VS_FORMAT_FRAME_BASED:
710 ret = uvc_parse_format(dev, streaming, format, frame,
711 &interval, buffer, buflen);
712 if (ret < 0)
713 goto error;
714 if (!ret)
715 break;
716
717 streaming->nformats++;
718 frame += format->nframes;
719 format++;
720
721 buflen -= ret;
722 buffer += ret;
723 continue;
724
725 default:
726 break;
727 }
728
729 buflen -= buffer[0];
730 buffer += buffer[0];
731 }
732
733 if (buflen)
734 uvc_dbg(dev, DESCR,
735 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
736 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
737
738 /* Parse the alternate settings to find the maximum bandwidth. */
739 for (i = 0; i < intf->num_altsetting; ++i) {
740 struct usb_host_endpoint *ep;
741
742 alts = &intf->altsetting[i];
743 ep = uvc_find_endpoint(alts,
744 streaming->header.bEndpointAddress);
745 if (ep == NULL)
746 continue;
747 psize = uvc_endpoint_max_bpi(dev->udev, ep);
748 if (psize > streaming->maxpsize)
749 streaming->maxpsize = psize;
750 }
751
752 list_add_tail(&streaming->list, &dev->streams);
753 return 0;
754
755 error:
756 usb_driver_release_interface(&uvc_driver.driver, intf);
757 uvc_stream_delete(streaming);
758 return ret;
759 }
760
761 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
762 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER;
763 static const u8 uvc_media_transport_input_guid[16] =
764 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
765 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
766
uvc_alloc_entity(u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)767 static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id,
768 unsigned int num_pads, unsigned int extra_size)
769 {
770 struct uvc_entity *entity;
771 unsigned int num_inputs;
772 unsigned int size;
773 unsigned int i;
774
775 extra_size = roundup(extra_size, sizeof(*entity->pads));
776 if (num_pads)
777 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
778 else
779 num_inputs = 0;
780 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
781 + num_inputs;
782 entity = kzalloc(size, GFP_KERNEL);
783 if (entity == NULL)
784 return NULL;
785
786 entity->id = id;
787 entity->type = type;
788
789 /*
790 * Set the GUID for standard entity types. For extension units, the GUID
791 * is initialized by the caller.
792 */
793 switch (type) {
794 case UVC_EXT_GPIO_UNIT:
795 memcpy(entity->guid, uvc_gpio_guid, 16);
796 break;
797 case UVC_ITT_CAMERA:
798 memcpy(entity->guid, uvc_camera_guid, 16);
799 break;
800 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
801 memcpy(entity->guid, uvc_media_transport_input_guid, 16);
802 break;
803 case UVC_VC_PROCESSING_UNIT:
804 memcpy(entity->guid, uvc_processing_guid, 16);
805 break;
806 }
807
808 entity->num_links = 0;
809 entity->num_pads = num_pads;
810 entity->pads = ((void *)(entity + 1)) + extra_size;
811
812 for (i = 0; i < num_inputs; ++i)
813 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
814 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
815 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
816
817 entity->bNrInPins = num_inputs;
818 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
819
820 return entity;
821 }
822
uvc_entity_set_name(struct uvc_device * dev,struct uvc_entity * entity,const char * type_name,u8 string_id)823 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity,
824 const char *type_name, u8 string_id)
825 {
826 int ret;
827
828 /*
829 * First attempt to read the entity name from the device. If the entity
830 * has no associated string, or if reading the string fails (most
831 * likely due to a buggy firmware), fall back to default names based on
832 * the entity type.
833 */
834 if (string_id) {
835 ret = usb_string(dev->udev, string_id, entity->name,
836 sizeof(entity->name));
837 if (!ret)
838 return;
839 }
840
841 sprintf(entity->name, "%s %u", type_name, entity->id);
842 }
843
844 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)845 static int uvc_parse_vendor_control(struct uvc_device *dev,
846 const unsigned char *buffer, int buflen)
847 {
848 struct usb_device *udev = dev->udev;
849 struct usb_host_interface *alts = dev->intf->cur_altsetting;
850 struct uvc_entity *unit;
851 unsigned int n, p;
852 int handled = 0;
853
854 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
855 case 0x046d: /* Logitech */
856 if (buffer[1] != 0x41 || buffer[2] != 0x01)
857 break;
858
859 /*
860 * Logitech implements several vendor specific functions
861 * through vendor specific extension units (LXU).
862 *
863 * The LXU descriptors are similar to XU descriptors
864 * (see "USB Device Video Class for Video Devices", section
865 * 3.7.2.6 "Extension Unit Descriptor") with the following
866 * differences:
867 *
868 * ----------------------------------------------------------
869 * 0 bLength 1 Number
870 * Size of this descriptor, in bytes: 24+p+n*2
871 * ----------------------------------------------------------
872 * 23+p+n bmControlsType N Bitmap
873 * Individual bits in the set are defined:
874 * 0: Absolute
875 * 1: Relative
876 *
877 * This bitset is mapped exactly the same as bmControls.
878 * ----------------------------------------------------------
879 * 23+p+n*2 bReserved 1 Boolean
880 * ----------------------------------------------------------
881 * 24+p+n*2 iExtension 1 Index
882 * Index of a string descriptor that describes this
883 * extension unit.
884 * ----------------------------------------------------------
885 */
886 p = buflen >= 22 ? buffer[21] : 0;
887 n = buflen >= 25 + p ? buffer[22+p] : 0;
888
889 if (buflen < 25 + p + 2*n) {
890 uvc_dbg(dev, DESCR,
891 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
892 udev->devnum, alts->desc.bInterfaceNumber);
893 break;
894 }
895
896 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
897 p + 1, 2*n);
898 if (unit == NULL)
899 return -ENOMEM;
900
901 memcpy(unit->guid, &buffer[4], 16);
902 unit->extension.bNumControls = buffer[20];
903 memcpy(unit->baSourceID, &buffer[22], p);
904 unit->extension.bControlSize = buffer[22+p];
905 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
906 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
907 + n;
908 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
909
910 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]);
911
912 list_add_tail(&unit->list, &dev->entities);
913 handled = 1;
914 break;
915 }
916
917 return handled;
918 }
919
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)920 static int uvc_parse_standard_control(struct uvc_device *dev,
921 const unsigned char *buffer, int buflen)
922 {
923 struct usb_device *udev = dev->udev;
924 struct uvc_entity *unit, *term;
925 struct usb_interface *intf;
926 struct usb_host_interface *alts = dev->intf->cur_altsetting;
927 unsigned int i, n, p, len;
928 const char *type_name;
929 u16 type;
930
931 switch (buffer[2]) {
932 case UVC_VC_HEADER:
933 n = buflen >= 12 ? buffer[11] : 0;
934
935 if (buflen < 12 + n) {
936 uvc_dbg(dev, DESCR,
937 "device %d videocontrol interface %d HEADER error\n",
938 udev->devnum, alts->desc.bInterfaceNumber);
939 return -EINVAL;
940 }
941
942 dev->uvc_version = get_unaligned_le16(&buffer[3]);
943 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
944
945 /* Parse all USB Video Streaming interfaces. */
946 for (i = 0; i < n; ++i) {
947 intf = usb_ifnum_to_if(udev, buffer[12+i]);
948 if (intf == NULL) {
949 uvc_dbg(dev, DESCR,
950 "device %d interface %d doesn't exists\n",
951 udev->devnum, i);
952 continue;
953 }
954
955 uvc_parse_streaming(dev, intf);
956 }
957 break;
958
959 case UVC_VC_INPUT_TERMINAL:
960 if (buflen < 8) {
961 uvc_dbg(dev, DESCR,
962 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
963 udev->devnum, alts->desc.bInterfaceNumber);
964 return -EINVAL;
965 }
966
967 /*
968 * Reject invalid terminal types that would cause issues:
969 *
970 * - The high byte must be non-zero, otherwise it would be
971 * confused with a unit.
972 *
973 * - Bit 15 must be 0, as we use it internally as a terminal
974 * direction flag.
975 *
976 * Other unknown types are accepted.
977 */
978 type = get_unaligned_le16(&buffer[4]);
979 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
980 uvc_dbg(dev, DESCR,
981 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
982 udev->devnum, alts->desc.bInterfaceNumber,
983 buffer[3], type);
984 return 0;
985 }
986
987 n = 0;
988 p = 0;
989 len = 8;
990
991 if (type == UVC_ITT_CAMERA) {
992 n = buflen >= 15 ? buffer[14] : 0;
993 len = 15;
994
995 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
996 n = buflen >= 9 ? buffer[8] : 0;
997 p = buflen >= 10 + n ? buffer[9+n] : 0;
998 len = 10;
999 }
1000
1001 if (buflen < len + n + p) {
1002 uvc_dbg(dev, DESCR,
1003 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
1004 udev->devnum, alts->desc.bInterfaceNumber);
1005 return -EINVAL;
1006 }
1007
1008 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
1009 1, n + p);
1010 if (term == NULL)
1011 return -ENOMEM;
1012
1013 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1014 term->camera.bControlSize = n;
1015 term->camera.bmControls = (u8 *)term + sizeof(*term);
1016 term->camera.wObjectiveFocalLengthMin =
1017 get_unaligned_le16(&buffer[8]);
1018 term->camera.wObjectiveFocalLengthMax =
1019 get_unaligned_le16(&buffer[10]);
1020 term->camera.wOcularFocalLength =
1021 get_unaligned_le16(&buffer[12]);
1022 memcpy(term->camera.bmControls, &buffer[15], n);
1023 } else if (UVC_ENTITY_TYPE(term) ==
1024 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1025 term->media.bControlSize = n;
1026 term->media.bmControls = (u8 *)term + sizeof(*term);
1027 term->media.bTransportModeSize = p;
1028 term->media.bmTransportModes = (u8 *)term
1029 + sizeof(*term) + n;
1030 memcpy(term->media.bmControls, &buffer[9], n);
1031 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1032 }
1033
1034 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1035 type_name = "Camera";
1036 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1037 type_name = "Media";
1038 else
1039 type_name = "Input";
1040
1041 uvc_entity_set_name(dev, term, type_name, buffer[7]);
1042
1043 list_add_tail(&term->list, &dev->entities);
1044 break;
1045
1046 case UVC_VC_OUTPUT_TERMINAL:
1047 if (buflen < 9) {
1048 uvc_dbg(dev, DESCR,
1049 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
1050 udev->devnum, alts->desc.bInterfaceNumber);
1051 return -EINVAL;
1052 }
1053
1054 /*
1055 * Make sure the terminal type MSB is not null, otherwise it
1056 * could be confused with a unit.
1057 */
1058 type = get_unaligned_le16(&buffer[4]);
1059 if ((type & 0xff00) == 0) {
1060 uvc_dbg(dev, DESCR,
1061 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1062 udev->devnum, alts->desc.bInterfaceNumber,
1063 buffer[3], type);
1064 return 0;
1065 }
1066
1067 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
1068 1, 0);
1069 if (term == NULL)
1070 return -ENOMEM;
1071
1072 memcpy(term->baSourceID, &buffer[7], 1);
1073
1074 uvc_entity_set_name(dev, term, "Output", buffer[8]);
1075
1076 list_add_tail(&term->list, &dev->entities);
1077 break;
1078
1079 case UVC_VC_SELECTOR_UNIT:
1080 p = buflen >= 5 ? buffer[4] : 0;
1081
1082 if (buflen < 5 || buflen < 6 + p) {
1083 uvc_dbg(dev, DESCR,
1084 "device %d videocontrol interface %d SELECTOR_UNIT error\n",
1085 udev->devnum, alts->desc.bInterfaceNumber);
1086 return -EINVAL;
1087 }
1088
1089 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
1090 if (unit == NULL)
1091 return -ENOMEM;
1092
1093 memcpy(unit->baSourceID, &buffer[5], p);
1094
1095 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]);
1096
1097 list_add_tail(&unit->list, &dev->entities);
1098 break;
1099
1100 case UVC_VC_PROCESSING_UNIT:
1101 n = buflen >= 8 ? buffer[7] : 0;
1102 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1103
1104 if (buflen < p + n) {
1105 uvc_dbg(dev, DESCR,
1106 "device %d videocontrol interface %d PROCESSING_UNIT error\n",
1107 udev->devnum, alts->desc.bInterfaceNumber);
1108 return -EINVAL;
1109 }
1110
1111 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
1112 if (unit == NULL)
1113 return -ENOMEM;
1114
1115 memcpy(unit->baSourceID, &buffer[4], 1);
1116 unit->processing.wMaxMultiplier =
1117 get_unaligned_le16(&buffer[5]);
1118 unit->processing.bControlSize = buffer[7];
1119 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1120 memcpy(unit->processing.bmControls, &buffer[8], n);
1121 if (dev->uvc_version >= 0x0110)
1122 unit->processing.bmVideoStandards = buffer[9+n];
1123
1124 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]);
1125
1126 list_add_tail(&unit->list, &dev->entities);
1127 break;
1128
1129 case UVC_VC_EXTENSION_UNIT:
1130 p = buflen >= 22 ? buffer[21] : 0;
1131 n = buflen >= 24 + p ? buffer[22+p] : 0;
1132
1133 if (buflen < 24 + p + n) {
1134 uvc_dbg(dev, DESCR,
1135 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
1136 udev->devnum, alts->desc.bInterfaceNumber);
1137 return -EINVAL;
1138 }
1139
1140 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n);
1141 if (unit == NULL)
1142 return -ENOMEM;
1143
1144 memcpy(unit->guid, &buffer[4], 16);
1145 unit->extension.bNumControls = buffer[20];
1146 memcpy(unit->baSourceID, &buffer[22], p);
1147 unit->extension.bControlSize = buffer[22+p];
1148 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1149 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1150
1151 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]);
1152
1153 list_add_tail(&unit->list, &dev->entities);
1154 break;
1155
1156 default:
1157 uvc_dbg(dev, DESCR,
1158 "Found an unknown CS_INTERFACE descriptor (%u)\n",
1159 buffer[2]);
1160 break;
1161 }
1162
1163 return 0;
1164 }
1165
uvc_parse_control(struct uvc_device * dev)1166 static int uvc_parse_control(struct uvc_device *dev)
1167 {
1168 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1169 const unsigned char *buffer = alts->extra;
1170 int buflen = alts->extralen;
1171 int ret;
1172
1173 /*
1174 * Parse the default alternate setting only, as the UVC specification
1175 * defines a single alternate setting, the default alternate setting
1176 * zero.
1177 */
1178
1179 while (buflen > 2) {
1180 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1181 buffer[1] != USB_DT_CS_INTERFACE)
1182 goto next_descriptor;
1183
1184 ret = uvc_parse_standard_control(dev, buffer, buflen);
1185 if (ret < 0)
1186 return ret;
1187
1188 next_descriptor:
1189 buflen -= buffer[0];
1190 buffer += buffer[0];
1191 }
1192
1193 /*
1194 * Check if the optional status endpoint is present. Built-in iSight
1195 * webcams have an interrupt endpoint but spit proprietary data that
1196 * don't conform to the UVC status endpoint messages. Don't try to
1197 * handle the interrupt endpoint for those cameras.
1198 */
1199 if (alts->desc.bNumEndpoints == 1 &&
1200 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1201 struct usb_host_endpoint *ep = &alts->endpoint[0];
1202 struct usb_endpoint_descriptor *desc = &ep->desc;
1203
1204 if (usb_endpoint_is_int_in(desc) &&
1205 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1206 desc->bInterval != 0) {
1207 uvc_dbg(dev, DESCR,
1208 "Found a Status endpoint (addr %02x)\n",
1209 desc->bEndpointAddress);
1210 dev->int_ep = ep;
1211 }
1212 }
1213
1214 return 0;
1215 }
1216
1217 /* -----------------------------------------------------------------------------
1218 * Privacy GPIO
1219 */
1220
uvc_gpio_event(struct uvc_device * dev)1221 static void uvc_gpio_event(struct uvc_device *dev)
1222 {
1223 struct uvc_entity *unit = dev->gpio_unit;
1224 struct uvc_video_chain *chain;
1225 u8 new_val;
1226
1227 if (!unit)
1228 return;
1229
1230 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy);
1231
1232 /* GPIO entities are always on the first chain. */
1233 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list);
1234 uvc_ctrl_status_event(chain, unit->controls, &new_val);
1235 }
1236
uvc_gpio_get_cur(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,void * data,u16 size)1237 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity,
1238 u8 cs, void *data, u16 size)
1239 {
1240 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1)
1241 return -EINVAL;
1242
1243 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy);
1244
1245 return 0;
1246 }
1247
uvc_gpio_get_info(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,u8 * caps)1248 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity,
1249 u8 cs, u8 *caps)
1250 {
1251 if (cs != UVC_CT_PRIVACY_CONTROL)
1252 return -EINVAL;
1253
1254 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE;
1255 return 0;
1256 }
1257
uvc_gpio_irq(int irq,void * data)1258 static irqreturn_t uvc_gpio_irq(int irq, void *data)
1259 {
1260 struct uvc_device *dev = data;
1261
1262 uvc_gpio_event(dev);
1263 return IRQ_HANDLED;
1264 }
1265
uvc_gpio_parse(struct uvc_device * dev)1266 static int uvc_gpio_parse(struct uvc_device *dev)
1267 {
1268 struct uvc_entity *unit;
1269 struct gpio_desc *gpio_privacy;
1270 int irq;
1271
1272 gpio_privacy = devm_gpiod_get_optional(&dev->udev->dev, "privacy",
1273 GPIOD_IN);
1274 if (IS_ERR_OR_NULL(gpio_privacy))
1275 return PTR_ERR_OR_ZERO(gpio_privacy);
1276
1277 irq = gpiod_to_irq(gpio_privacy);
1278 if (irq < 0)
1279 return dev_err_probe(&dev->udev->dev, irq,
1280 "No IRQ for privacy GPIO\n");
1281
1282 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1);
1283 if (!unit)
1284 return -ENOMEM;
1285
1286 unit->gpio.gpio_privacy = gpio_privacy;
1287 unit->gpio.irq = irq;
1288 unit->gpio.bControlSize = 1;
1289 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit);
1290 unit->gpio.bmControls[0] = 1;
1291 unit->get_cur = uvc_gpio_get_cur;
1292 unit->get_info = uvc_gpio_get_info;
1293 strscpy(unit->name, "GPIO", sizeof(unit->name));
1294
1295 list_add_tail(&unit->list, &dev->entities);
1296
1297 dev->gpio_unit = unit;
1298
1299 return 0;
1300 }
1301
uvc_gpio_init_irq(struct uvc_device * dev)1302 static int uvc_gpio_init_irq(struct uvc_device *dev)
1303 {
1304 struct uvc_entity *unit = dev->gpio_unit;
1305
1306 if (!unit || unit->gpio.irq < 0)
1307 return 0;
1308
1309 return devm_request_threaded_irq(&dev->udev->dev, unit->gpio.irq, NULL,
1310 uvc_gpio_irq,
1311 IRQF_ONESHOT | IRQF_TRIGGER_FALLING |
1312 IRQF_TRIGGER_RISING,
1313 "uvc_privacy_gpio", dev);
1314 }
1315
1316 /* ------------------------------------------------------------------------
1317 * UVC device scan
1318 */
1319
1320 /*
1321 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1322 * and containing the following units:
1323 *
1324 * - one or more Output Terminals (USB Streaming or Display)
1325 * - zero or one Processing Unit
1326 * - zero, one or more single-input Selector Units
1327 * - zero or one multiple-input Selector Units, provided all inputs are
1328 * connected to input terminals
1329 * - zero, one or mode single-input Extension Units
1330 * - one or more Input Terminals (Camera, External or USB Streaming)
1331 *
1332 * The terminal and units must match on of the following structures:
1333 *
1334 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1335 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1336 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1337 *
1338 * +---------+ +---------+ -> OTT_*(0)
1339 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1340 * +---------+ +---------+ -> OTT_*(n)
1341 *
1342 * The Processing Unit and Extension Units can be in any order. Additional
1343 * Extension Units connected to the main chain as single-unit branches are
1344 * also supported. Single-input Selector Units are ignored.
1345 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1346 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1347 struct uvc_entity *entity)
1348 {
1349 switch (UVC_ENTITY_TYPE(entity)) {
1350 case UVC_VC_EXTENSION_UNIT:
1351 uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
1352
1353 if (entity->bNrInPins != 1) {
1354 uvc_dbg(chain->dev, DESCR,
1355 "Extension unit %d has more than 1 input pin\n",
1356 entity->id);
1357 return -1;
1358 }
1359
1360 break;
1361
1362 case UVC_VC_PROCESSING_UNIT:
1363 uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
1364
1365 if (chain->processing != NULL) {
1366 uvc_dbg(chain->dev, DESCR,
1367 "Found multiple Processing Units in chain\n");
1368 return -1;
1369 }
1370
1371 chain->processing = entity;
1372 break;
1373
1374 case UVC_VC_SELECTOR_UNIT:
1375 uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
1376
1377 /* Single-input selector units are ignored. */
1378 if (entity->bNrInPins == 1)
1379 break;
1380
1381 if (chain->selector != NULL) {
1382 uvc_dbg(chain->dev, DESCR,
1383 "Found multiple Selector Units in chain\n");
1384 return -1;
1385 }
1386
1387 chain->selector = entity;
1388 break;
1389
1390 case UVC_ITT_VENDOR_SPECIFIC:
1391 case UVC_ITT_CAMERA:
1392 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1393 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1394
1395 break;
1396
1397 case UVC_OTT_VENDOR_SPECIFIC:
1398 case UVC_OTT_DISPLAY:
1399 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1400 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1401
1402 break;
1403
1404 case UVC_TT_STREAMING:
1405 if (UVC_ENTITY_IS_ITERM(entity))
1406 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1407 else
1408 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1409
1410 break;
1411
1412 default:
1413 uvc_dbg(chain->dev, DESCR,
1414 "Unsupported entity type 0x%04x found in chain\n",
1415 UVC_ENTITY_TYPE(entity));
1416 return -1;
1417 }
1418
1419 list_add_tail(&entity->chain, &chain->entities);
1420 return 0;
1421 }
1422
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1423 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1424 struct uvc_entity *entity, struct uvc_entity *prev)
1425 {
1426 struct uvc_entity *forward;
1427 int found;
1428
1429 /* Forward scan */
1430 forward = NULL;
1431 found = 0;
1432
1433 while (1) {
1434 forward = uvc_entity_by_reference(chain->dev, entity->id,
1435 forward);
1436 if (forward == NULL)
1437 break;
1438 if (forward == prev)
1439 continue;
1440 if (forward->chain.next || forward->chain.prev) {
1441 uvc_dbg(chain->dev, DESCR,
1442 "Found reference to entity %d already in chain\n",
1443 forward->id);
1444 return -EINVAL;
1445 }
1446
1447 switch (UVC_ENTITY_TYPE(forward)) {
1448 case UVC_VC_EXTENSION_UNIT:
1449 if (forward->bNrInPins != 1) {
1450 uvc_dbg(chain->dev, DESCR,
1451 "Extension unit %d has more than 1 input pin\n",
1452 forward->id);
1453 return -EINVAL;
1454 }
1455
1456 /*
1457 * Some devices reference an output terminal as the
1458 * source of extension units. This is incorrect, as
1459 * output terminals only have an input pin, and thus
1460 * can't be connected to any entity in the forward
1461 * direction. The resulting topology would cause issues
1462 * when registering the media controller graph. To
1463 * avoid this problem, connect the extension unit to
1464 * the source of the output terminal instead.
1465 */
1466 if (UVC_ENTITY_IS_OTERM(entity)) {
1467 struct uvc_entity *source;
1468
1469 source = uvc_entity_by_id(chain->dev,
1470 entity->baSourceID[0]);
1471 if (!source) {
1472 uvc_dbg(chain->dev, DESCR,
1473 "Can't connect extension unit %u in chain\n",
1474 forward->id);
1475 break;
1476 }
1477
1478 forward->baSourceID[0] = source->id;
1479 }
1480
1481 list_add_tail(&forward->chain, &chain->entities);
1482 if (!found)
1483 uvc_dbg_cont(PROBE, " (->");
1484
1485 uvc_dbg_cont(PROBE, " XU %d", forward->id);
1486 found = 1;
1487 break;
1488
1489 case UVC_OTT_VENDOR_SPECIFIC:
1490 case UVC_OTT_DISPLAY:
1491 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1492 case UVC_TT_STREAMING:
1493 if (UVC_ENTITY_IS_ITERM(forward)) {
1494 uvc_dbg(chain->dev, DESCR,
1495 "Unsupported input terminal %u\n",
1496 forward->id);
1497 return -EINVAL;
1498 }
1499
1500 if (UVC_ENTITY_IS_OTERM(entity)) {
1501 uvc_dbg(chain->dev, DESCR,
1502 "Unsupported connection between output terminals %u and %u\n",
1503 entity->id, forward->id);
1504 break;
1505 }
1506
1507 list_add_tail(&forward->chain, &chain->entities);
1508 if (!found)
1509 uvc_dbg_cont(PROBE, " (->");
1510
1511 uvc_dbg_cont(PROBE, " OT %d", forward->id);
1512 found = 1;
1513 break;
1514 }
1515 }
1516 if (found)
1517 uvc_dbg_cont(PROBE, ")");
1518
1519 return 0;
1520 }
1521
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1522 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1523 struct uvc_entity **_entity)
1524 {
1525 struct uvc_entity *entity = *_entity;
1526 struct uvc_entity *term;
1527 int id = -EINVAL, i;
1528
1529 switch (UVC_ENTITY_TYPE(entity)) {
1530 case UVC_VC_EXTENSION_UNIT:
1531 case UVC_VC_PROCESSING_UNIT:
1532 id = entity->baSourceID[0];
1533 break;
1534
1535 case UVC_VC_SELECTOR_UNIT:
1536 /* Single-input selector units are ignored. */
1537 if (entity->bNrInPins == 1) {
1538 id = entity->baSourceID[0];
1539 break;
1540 }
1541
1542 uvc_dbg_cont(PROBE, " <- IT");
1543
1544 chain->selector = entity;
1545 for (i = 0; i < entity->bNrInPins; ++i) {
1546 id = entity->baSourceID[i];
1547 term = uvc_entity_by_id(chain->dev, id);
1548 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1549 uvc_dbg(chain->dev, DESCR,
1550 "Selector unit %d input %d isn't connected to an input terminal\n",
1551 entity->id, i);
1552 return -1;
1553 }
1554
1555 if (term->chain.next || term->chain.prev) {
1556 uvc_dbg(chain->dev, DESCR,
1557 "Found reference to entity %d already in chain\n",
1558 term->id);
1559 return -EINVAL;
1560 }
1561
1562 uvc_dbg_cont(PROBE, " %d", term->id);
1563
1564 list_add_tail(&term->chain, &chain->entities);
1565 uvc_scan_chain_forward(chain, term, entity);
1566 }
1567
1568 uvc_dbg_cont(PROBE, "\n");
1569
1570 id = 0;
1571 break;
1572
1573 case UVC_ITT_VENDOR_SPECIFIC:
1574 case UVC_ITT_CAMERA:
1575 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1576 case UVC_OTT_VENDOR_SPECIFIC:
1577 case UVC_OTT_DISPLAY:
1578 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1579 case UVC_TT_STREAMING:
1580 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1581 break;
1582 }
1583
1584 if (id <= 0) {
1585 *_entity = NULL;
1586 return id;
1587 }
1588
1589 entity = uvc_entity_by_id(chain->dev, id);
1590 if (entity == NULL) {
1591 uvc_dbg(chain->dev, DESCR,
1592 "Found reference to unknown entity %d\n", id);
1593 return -EINVAL;
1594 }
1595
1596 *_entity = entity;
1597 return 0;
1598 }
1599
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1600 static int uvc_scan_chain(struct uvc_video_chain *chain,
1601 struct uvc_entity *term)
1602 {
1603 struct uvc_entity *entity, *prev;
1604
1605 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
1606
1607 entity = term;
1608 prev = NULL;
1609
1610 while (entity != NULL) {
1611 /* Entity must not be part of an existing chain */
1612 if (entity->chain.next || entity->chain.prev) {
1613 uvc_dbg(chain->dev, DESCR,
1614 "Found reference to entity %d already in chain\n",
1615 entity->id);
1616 return -EINVAL;
1617 }
1618
1619 /* Process entity */
1620 if (uvc_scan_chain_entity(chain, entity) < 0)
1621 return -EINVAL;
1622
1623 /* Forward scan */
1624 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1625 return -EINVAL;
1626
1627 /* Backward scan */
1628 prev = entity;
1629 if (uvc_scan_chain_backward(chain, &entity) < 0)
1630 return -EINVAL;
1631 }
1632
1633 return 0;
1634 }
1635
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1636 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1637 char *buffer)
1638 {
1639 struct uvc_entity *term;
1640 unsigned int nterms = 0;
1641 char *p = buffer;
1642
1643 list_for_each_entry(term, terms, chain) {
1644 if (!UVC_ENTITY_IS_TERM(term) ||
1645 UVC_TERM_DIRECTION(term) != dir)
1646 continue;
1647
1648 if (nterms)
1649 p += sprintf(p, ",");
1650 if (++nterms >= 4) {
1651 p += sprintf(p, "...");
1652 break;
1653 }
1654 p += sprintf(p, "%u", term->id);
1655 }
1656
1657 return p - buffer;
1658 }
1659
uvc_print_chain(struct uvc_video_chain * chain)1660 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1661 {
1662 static char buffer[43];
1663 char *p = buffer;
1664
1665 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1666 p += sprintf(p, " -> ");
1667 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1668
1669 return buffer;
1670 }
1671
uvc_alloc_chain(struct uvc_device * dev)1672 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1673 {
1674 struct uvc_video_chain *chain;
1675
1676 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1677 if (chain == NULL)
1678 return NULL;
1679
1680 INIT_LIST_HEAD(&chain->entities);
1681 mutex_init(&chain->ctrl_mutex);
1682 chain->dev = dev;
1683 v4l2_prio_init(&chain->prio);
1684
1685 return chain;
1686 }
1687
1688 /*
1689 * Fallback heuristic for devices that don't connect units and terminals in a
1690 * valid chain.
1691 *
1692 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1693 * to fail, but if we just take the entities we can find and put them together
1694 * in the most sensible chain we can think of, turns out they do work anyway.
1695 * Note: This heuristic assumes there is a single chain.
1696 *
1697 * At the time of writing, devices known to have such a broken chain are
1698 * - Acer Integrated Camera (5986:055a)
1699 * - Realtek rtl157a7 (0bda:57a7)
1700 */
uvc_scan_fallback(struct uvc_device * dev)1701 static int uvc_scan_fallback(struct uvc_device *dev)
1702 {
1703 struct uvc_video_chain *chain;
1704 struct uvc_entity *iterm = NULL;
1705 struct uvc_entity *oterm = NULL;
1706 struct uvc_entity *entity;
1707 struct uvc_entity *prev;
1708
1709 /*
1710 * Start by locating the input and output terminals. We only support
1711 * devices with exactly one of each for now.
1712 */
1713 list_for_each_entry(entity, &dev->entities, list) {
1714 if (UVC_ENTITY_IS_ITERM(entity)) {
1715 if (iterm)
1716 return -EINVAL;
1717 iterm = entity;
1718 }
1719
1720 if (UVC_ENTITY_IS_OTERM(entity)) {
1721 if (oterm)
1722 return -EINVAL;
1723 oterm = entity;
1724 }
1725 }
1726
1727 if (iterm == NULL || oterm == NULL)
1728 return -EINVAL;
1729
1730 /* Allocate the chain and fill it. */
1731 chain = uvc_alloc_chain(dev);
1732 if (chain == NULL)
1733 return -ENOMEM;
1734
1735 if (uvc_scan_chain_entity(chain, oterm) < 0)
1736 goto error;
1737
1738 prev = oterm;
1739
1740 /*
1741 * Add all Processing and Extension Units with two pads. The order
1742 * doesn't matter much, use reverse list traversal to connect units in
1743 * UVC descriptor order as we build the chain from output to input. This
1744 * leads to units appearing in the order meant by the manufacturer for
1745 * the cameras known to require this heuristic.
1746 */
1747 list_for_each_entry_reverse(entity, &dev->entities, list) {
1748 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1749 entity->type != UVC_VC_EXTENSION_UNIT)
1750 continue;
1751
1752 if (entity->num_pads != 2)
1753 continue;
1754
1755 if (uvc_scan_chain_entity(chain, entity) < 0)
1756 goto error;
1757
1758 prev->baSourceID[0] = entity->id;
1759 prev = entity;
1760 }
1761
1762 if (uvc_scan_chain_entity(chain, iterm) < 0)
1763 goto error;
1764
1765 prev->baSourceID[0] = iterm->id;
1766
1767 list_add_tail(&chain->list, &dev->chains);
1768
1769 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
1770 uvc_print_chain(chain));
1771
1772 return 0;
1773
1774 error:
1775 kfree(chain);
1776 return -EINVAL;
1777 }
1778
1779 /*
1780 * Scan the device for video chains and register video devices.
1781 *
1782 * Chains are scanned starting at their output terminals and walked backwards.
1783 */
uvc_scan_device(struct uvc_device * dev)1784 static int uvc_scan_device(struct uvc_device *dev)
1785 {
1786 struct uvc_video_chain *chain;
1787 struct uvc_entity *term;
1788
1789 list_for_each_entry(term, &dev->entities, list) {
1790 if (!UVC_ENTITY_IS_OTERM(term))
1791 continue;
1792
1793 /*
1794 * If the terminal is already included in a chain, skip it.
1795 * This can happen for chains that have multiple output
1796 * terminals, where all output terminals beside the first one
1797 * will be inserted in the chain in forward scans.
1798 */
1799 if (term->chain.next || term->chain.prev)
1800 continue;
1801
1802 chain = uvc_alloc_chain(dev);
1803 if (chain == NULL)
1804 return -ENOMEM;
1805
1806 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1807
1808 if (uvc_scan_chain(chain, term) < 0) {
1809 kfree(chain);
1810 continue;
1811 }
1812
1813 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
1814 uvc_print_chain(chain));
1815
1816 list_add_tail(&chain->list, &dev->chains);
1817 }
1818
1819 if (list_empty(&dev->chains))
1820 uvc_scan_fallback(dev);
1821
1822 if (list_empty(&dev->chains)) {
1823 dev_info(&dev->udev->dev, "No valid video chain found.\n");
1824 return -1;
1825 }
1826
1827 /* Add GPIO entity to the first chain. */
1828 if (dev->gpio_unit) {
1829 chain = list_first_entry(&dev->chains,
1830 struct uvc_video_chain, list);
1831 list_add_tail(&dev->gpio_unit->chain, &chain->entities);
1832 }
1833
1834 return 0;
1835 }
1836
1837 /* ------------------------------------------------------------------------
1838 * Video device registration and unregistration
1839 */
1840
1841 /*
1842 * Delete the UVC device.
1843 *
1844 * Called by the kernel when the last reference to the uvc_device structure
1845 * is released.
1846 *
1847 * As this function is called after or during disconnect(), all URBs have
1848 * already been cancelled by the USB core. There is no need to kill the
1849 * interrupt URB manually.
1850 */
uvc_delete(struct kref * kref)1851 static void uvc_delete(struct kref *kref)
1852 {
1853 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1854 struct list_head *p, *n;
1855
1856 uvc_status_cleanup(dev);
1857 uvc_ctrl_cleanup_device(dev);
1858
1859 usb_put_intf(dev->intf);
1860 usb_put_dev(dev->udev);
1861
1862 #ifdef CONFIG_MEDIA_CONTROLLER
1863 media_device_cleanup(&dev->mdev);
1864 #endif
1865
1866 list_for_each_safe(p, n, &dev->chains) {
1867 struct uvc_video_chain *chain;
1868
1869 chain = list_entry(p, struct uvc_video_chain, list);
1870 kfree(chain);
1871 }
1872
1873 list_for_each_safe(p, n, &dev->entities) {
1874 struct uvc_entity *entity;
1875
1876 entity = list_entry(p, struct uvc_entity, list);
1877 #ifdef CONFIG_MEDIA_CONTROLLER
1878 uvc_mc_cleanup_entity(entity);
1879 #endif
1880 kfree(entity);
1881 }
1882
1883 list_for_each_safe(p, n, &dev->streams) {
1884 struct uvc_streaming *streaming;
1885
1886 streaming = list_entry(p, struct uvc_streaming, list);
1887 usb_driver_release_interface(&uvc_driver.driver,
1888 streaming->intf);
1889 uvc_stream_delete(streaming);
1890 }
1891
1892 kfree(dev);
1893 }
1894
uvc_release(struct video_device * vdev)1895 static void uvc_release(struct video_device *vdev)
1896 {
1897 struct uvc_streaming *stream = video_get_drvdata(vdev);
1898 struct uvc_device *dev = stream->dev;
1899
1900 kref_put(&dev->ref, uvc_delete);
1901 }
1902
1903 /*
1904 * Unregister the video devices.
1905 */
uvc_unregister_video(struct uvc_device * dev)1906 static void uvc_unregister_video(struct uvc_device *dev)
1907 {
1908 struct uvc_streaming *stream;
1909
1910 list_for_each_entry(stream, &dev->streams, list) {
1911 if (!video_is_registered(&stream->vdev))
1912 continue;
1913
1914 video_unregister_device(&stream->vdev);
1915 video_unregister_device(&stream->meta.vdev);
1916
1917 uvc_debugfs_cleanup_stream(stream);
1918 }
1919
1920 uvc_status_unregister(dev);
1921
1922 if (dev->vdev.dev)
1923 v4l2_device_unregister(&dev->vdev);
1924 #ifdef CONFIG_MEDIA_CONTROLLER
1925 if (media_devnode_is_registered(dev->mdev.devnode))
1926 media_device_unregister(&dev->mdev);
1927 #endif
1928 }
1929
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)1930 int uvc_register_video_device(struct uvc_device *dev,
1931 struct uvc_streaming *stream,
1932 struct video_device *vdev,
1933 struct uvc_video_queue *queue,
1934 enum v4l2_buf_type type,
1935 const struct v4l2_file_operations *fops,
1936 const struct v4l2_ioctl_ops *ioctl_ops)
1937 {
1938 int ret;
1939
1940 /* Initialize the video buffers queue. */
1941 ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
1942 if (ret)
1943 return ret;
1944
1945 /* Register the device with V4L. */
1946
1947 /*
1948 * We already hold a reference to dev->udev. The video device will be
1949 * unregistered before the reference is released, so we don't need to
1950 * get another one.
1951 */
1952 vdev->v4l2_dev = &dev->vdev;
1953 vdev->fops = fops;
1954 vdev->ioctl_ops = ioctl_ops;
1955 vdev->release = uvc_release;
1956 vdev->prio = &stream->chain->prio;
1957 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1958 vdev->vfl_dir = VFL_DIR_TX;
1959 else
1960 vdev->vfl_dir = VFL_DIR_RX;
1961
1962 switch (type) {
1963 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1964 default:
1965 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1966 break;
1967 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1968 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
1969 break;
1970 case V4L2_BUF_TYPE_META_CAPTURE:
1971 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
1972 break;
1973 }
1974
1975 strscpy(vdev->name, dev->name, sizeof(vdev->name));
1976
1977 /*
1978 * Set the driver data before calling video_register_device, otherwise
1979 * the file open() handler might race us.
1980 */
1981 video_set_drvdata(vdev, stream);
1982
1983 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1984 if (ret < 0) {
1985 dev_err(&stream->intf->dev,
1986 "Failed to register %s device (%d).\n",
1987 v4l2_type_names[type], ret);
1988 return ret;
1989 }
1990
1991 kref_get(&dev->ref);
1992 return 0;
1993 }
1994
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)1995 static int uvc_register_video(struct uvc_device *dev,
1996 struct uvc_streaming *stream)
1997 {
1998 int ret;
1999
2000 /* Initialize the streaming interface with default parameters. */
2001 ret = uvc_video_init(stream);
2002 if (ret < 0) {
2003 dev_err(&stream->intf->dev,
2004 "Failed to initialize the device (%d).\n", ret);
2005 return ret;
2006 }
2007
2008 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2009 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2010 | V4L2_CAP_META_CAPTURE;
2011 else
2012 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2013
2014 uvc_debugfs_init_stream(stream);
2015
2016 /* Register the device with V4L. */
2017 return uvc_register_video_device(dev, stream, &stream->vdev,
2018 &stream->queue, stream->type,
2019 &uvc_fops, &uvc_ioctl_ops);
2020 }
2021
2022 /*
2023 * Register all video devices in all chains.
2024 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2025 static int uvc_register_terms(struct uvc_device *dev,
2026 struct uvc_video_chain *chain)
2027 {
2028 struct uvc_streaming *stream;
2029 struct uvc_entity *term;
2030 int ret;
2031
2032 list_for_each_entry(term, &chain->entities, chain) {
2033 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2034 continue;
2035
2036 stream = uvc_stream_by_id(dev, term->id);
2037 if (stream == NULL) {
2038 dev_info(&dev->udev->dev,
2039 "No streaming interface found for terminal %u.",
2040 term->id);
2041 continue;
2042 }
2043
2044 stream->chain = chain;
2045 ret = uvc_register_video(dev, stream);
2046 if (ret < 0)
2047 return ret;
2048
2049 /*
2050 * Register a metadata node, but ignore a possible failure,
2051 * complete registration of video nodes anyway.
2052 */
2053 uvc_meta_register(stream);
2054
2055 term->vdev = &stream->vdev;
2056 }
2057
2058 return 0;
2059 }
2060
uvc_register_chains(struct uvc_device * dev)2061 static int uvc_register_chains(struct uvc_device *dev)
2062 {
2063 struct uvc_video_chain *chain;
2064 int ret;
2065
2066 list_for_each_entry(chain, &dev->chains, list) {
2067 ret = uvc_register_terms(dev, chain);
2068 if (ret < 0)
2069 return ret;
2070
2071 #ifdef CONFIG_MEDIA_CONTROLLER
2072 ret = uvc_mc_register_entities(chain);
2073 if (ret < 0)
2074 dev_info(&dev->udev->dev,
2075 "Failed to register entities (%d).\n", ret);
2076 #endif
2077 }
2078
2079 return 0;
2080 }
2081
2082 /* ------------------------------------------------------------------------
2083 * USB probe, disconnect, suspend and resume
2084 */
2085
2086 static const struct uvc_device_info uvc_quirk_none = { 0 };
2087
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2088 static int uvc_probe(struct usb_interface *intf,
2089 const struct usb_device_id *id)
2090 {
2091 struct usb_device *udev = interface_to_usbdev(intf);
2092 struct uvc_device *dev;
2093 const struct uvc_device_info *info =
2094 (const struct uvc_device_info *)id->driver_info;
2095 int function;
2096 int ret;
2097
2098 /* Allocate memory for the device and initialize it. */
2099 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2100 if (dev == NULL)
2101 return -ENOMEM;
2102
2103 INIT_LIST_HEAD(&dev->entities);
2104 INIT_LIST_HEAD(&dev->chains);
2105 INIT_LIST_HEAD(&dev->streams);
2106 kref_init(&dev->ref);
2107 atomic_set(&dev->nmappings, 0);
2108 mutex_init(&dev->lock);
2109
2110 dev->udev = usb_get_dev(udev);
2111 dev->intf = usb_get_intf(intf);
2112 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2113 dev->info = info ? info : &uvc_quirk_none;
2114 dev->quirks = uvc_quirks_param == -1
2115 ? dev->info->quirks : uvc_quirks_param;
2116
2117 if (id->idVendor && id->idProduct)
2118 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
2119 udev->devpath, id->idVendor, id->idProduct);
2120 else
2121 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
2122 udev->devpath);
2123
2124 if (udev->product != NULL)
2125 strscpy(dev->name, udev->product, sizeof(dev->name));
2126 else
2127 snprintf(dev->name, sizeof(dev->name),
2128 "UVC Camera (%04x:%04x)",
2129 le16_to_cpu(udev->descriptor.idVendor),
2130 le16_to_cpu(udev->descriptor.idProduct));
2131
2132 /*
2133 * Add iFunction or iInterface to names when available as additional
2134 * distinguishers between interfaces. iFunction is prioritized over
2135 * iInterface which matches Windows behavior at the point of writing.
2136 */
2137 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2138 function = intf->intf_assoc->iFunction;
2139 else
2140 function = intf->cur_altsetting->desc.iInterface;
2141 if (function != 0) {
2142 size_t len;
2143
2144 strlcat(dev->name, ": ", sizeof(dev->name));
2145 len = strlen(dev->name);
2146 usb_string(udev, function, dev->name + len,
2147 sizeof(dev->name) - len);
2148 }
2149
2150 /* Initialize the media device. */
2151 #ifdef CONFIG_MEDIA_CONTROLLER
2152 dev->mdev.dev = &intf->dev;
2153 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2154 if (udev->serial)
2155 strscpy(dev->mdev.serial, udev->serial,
2156 sizeof(dev->mdev.serial));
2157 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2158 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2159 media_device_init(&dev->mdev);
2160
2161 dev->vdev.mdev = &dev->mdev;
2162 #endif
2163
2164 /* Parse the Video Class control descriptor. */
2165 if (uvc_parse_control(dev) < 0) {
2166 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
2167 goto error;
2168 }
2169
2170 /* Parse the associated GPIOs. */
2171 if (uvc_gpio_parse(dev) < 0) {
2172 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
2173 goto error;
2174 }
2175
2176 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2177 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2178 udev->product ? udev->product : "<unnamed>",
2179 le16_to_cpu(udev->descriptor.idVendor),
2180 le16_to_cpu(udev->descriptor.idProduct));
2181
2182 if (dev->quirks != dev->info->quirks) {
2183 dev_info(&dev->udev->dev,
2184 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
2185 dev->quirks);
2186 dev_info(&dev->udev->dev,
2187 "Please report required quirks to the linux-media mailing list.\n");
2188 }
2189
2190 if (dev->info->uvc_version) {
2191 dev->uvc_version = dev->info->uvc_version;
2192 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n",
2193 dev->uvc_version >> 8, dev->uvc_version & 0xff);
2194 }
2195
2196 /* Register the V4L2 device. */
2197 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2198 goto error;
2199
2200 /* Scan the device for video chains. */
2201 if (uvc_scan_device(dev) < 0)
2202 goto error;
2203
2204 /* Initialize controls. */
2205 if (uvc_ctrl_init_device(dev) < 0)
2206 goto error;
2207
2208 /* Register video device nodes. */
2209 if (uvc_register_chains(dev) < 0)
2210 goto error;
2211
2212 #ifdef CONFIG_MEDIA_CONTROLLER
2213 /* Register the media device node */
2214 if (media_device_register(&dev->mdev) < 0)
2215 goto error;
2216 #endif
2217 /* Save our data pointer in the interface data. */
2218 usb_set_intfdata(intf, dev);
2219
2220 /* Initialize the interrupt URB. */
2221 ret = uvc_status_init(dev);
2222 if (ret < 0) {
2223 dev_info(&dev->udev->dev,
2224 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
2225 ret);
2226 }
2227
2228 ret = uvc_gpio_init_irq(dev);
2229 if (ret < 0) {
2230 dev_err(&dev->udev->dev,
2231 "Unable to request privacy GPIO IRQ (%d)\n", ret);
2232 goto error;
2233 }
2234
2235 uvc_dbg(dev, PROBE, "UVC device initialized\n");
2236 usb_enable_autosuspend(udev);
2237 return 0;
2238
2239 error:
2240 uvc_unregister_video(dev);
2241 kref_put(&dev->ref, uvc_delete);
2242 return -ENODEV;
2243 }
2244
uvc_disconnect(struct usb_interface * intf)2245 static void uvc_disconnect(struct usb_interface *intf)
2246 {
2247 struct uvc_device *dev = usb_get_intfdata(intf);
2248
2249 /*
2250 * Set the USB interface data to NULL. This can be done outside the
2251 * lock, as there's no other reader.
2252 */
2253 usb_set_intfdata(intf, NULL);
2254
2255 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2256 UVC_SC_VIDEOSTREAMING)
2257 return;
2258
2259 uvc_unregister_video(dev);
2260 kref_put(&dev->ref, uvc_delete);
2261 }
2262
uvc_suspend(struct usb_interface * intf,pm_message_t message)2263 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2264 {
2265 struct uvc_device *dev = usb_get_intfdata(intf);
2266 struct uvc_streaming *stream;
2267
2268 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
2269 intf->cur_altsetting->desc.bInterfaceNumber);
2270
2271 /* Controls are cached on the fly so they don't need to be saved. */
2272 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2273 UVC_SC_VIDEOCONTROL) {
2274 mutex_lock(&dev->lock);
2275 if (dev->users)
2276 uvc_status_stop(dev);
2277 mutex_unlock(&dev->lock);
2278 return 0;
2279 }
2280
2281 list_for_each_entry(stream, &dev->streams, list) {
2282 if (stream->intf == intf)
2283 return uvc_video_suspend(stream);
2284 }
2285
2286 uvc_dbg(dev, SUSPEND,
2287 "Suspend: video streaming USB interface mismatch\n");
2288 return -EINVAL;
2289 }
2290
__uvc_resume(struct usb_interface * intf,int reset)2291 static int __uvc_resume(struct usb_interface *intf, int reset)
2292 {
2293 struct uvc_device *dev = usb_get_intfdata(intf);
2294 struct uvc_streaming *stream;
2295 int ret = 0;
2296
2297 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
2298 intf->cur_altsetting->desc.bInterfaceNumber);
2299
2300 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2301 UVC_SC_VIDEOCONTROL) {
2302 if (reset) {
2303 ret = uvc_ctrl_restore_values(dev);
2304 if (ret < 0)
2305 return ret;
2306 }
2307
2308 mutex_lock(&dev->lock);
2309 if (dev->users)
2310 ret = uvc_status_start(dev, GFP_NOIO);
2311 mutex_unlock(&dev->lock);
2312
2313 return ret;
2314 }
2315
2316 list_for_each_entry(stream, &dev->streams, list) {
2317 if (stream->intf == intf) {
2318 ret = uvc_video_resume(stream, reset);
2319 if (ret < 0)
2320 uvc_queue_streamoff(&stream->queue,
2321 stream->queue.queue.type);
2322 return ret;
2323 }
2324 }
2325
2326 uvc_dbg(dev, SUSPEND,
2327 "Resume: video streaming USB interface mismatch\n");
2328 return -EINVAL;
2329 }
2330
uvc_resume(struct usb_interface * intf)2331 static int uvc_resume(struct usb_interface *intf)
2332 {
2333 return __uvc_resume(intf, 0);
2334 }
2335
uvc_reset_resume(struct usb_interface * intf)2336 static int uvc_reset_resume(struct usb_interface *intf)
2337 {
2338 return __uvc_resume(intf, 1);
2339 }
2340
2341 /* ------------------------------------------------------------------------
2342 * Module parameters
2343 */
2344
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2345 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2346 {
2347 if (uvc_clock_param == CLOCK_MONOTONIC)
2348 return sprintf(buffer, "CLOCK_MONOTONIC");
2349 else
2350 return sprintf(buffer, "CLOCK_REALTIME");
2351 }
2352
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2353 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2354 {
2355 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2356 val += strlen("clock_");
2357
2358 if (strcasecmp(val, "monotonic") == 0)
2359 uvc_clock_param = CLOCK_MONOTONIC;
2360 else if (strcasecmp(val, "realtime") == 0)
2361 uvc_clock_param = CLOCK_REALTIME;
2362 else
2363 return -EINVAL;
2364
2365 return 0;
2366 }
2367
2368 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2369 &uvc_clock_param, 0644);
2370 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2371 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644);
2372 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2373 module_param_named(nodrop, uvc_no_drop_param, uint, 0644);
2374 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2375 module_param_named(quirks, uvc_quirks_param, uint, 0644);
2376 MODULE_PARM_DESC(quirks, "Forced device quirks");
2377 module_param_named(trace, uvc_dbg_param, uint, 0644);
2378 MODULE_PARM_DESC(trace, "Trace level bitmask");
2379 module_param_named(timeout, uvc_timeout_param, uint, 0644);
2380 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2381
2382 /* ------------------------------------------------------------------------
2383 * Driver initialization and cleanup
2384 */
2385
2386 static const struct uvc_device_info uvc_ctrl_power_line_limited = {
2387 .mappings = (const struct uvc_control_mapping *[]) {
2388 &uvc_ctrl_power_line_mapping_limited,
2389 NULL, /* Sentinel */
2390 },
2391 };
2392
2393 static const struct uvc_device_info uvc_ctrl_power_line_uvc11 = {
2394 .mappings = (const struct uvc_control_mapping *[]) {
2395 &uvc_ctrl_power_line_mapping_uvc11,
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, Webcam C910 */
2503 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2504 | USB_DEVICE_ID_MATCH_INT_INFO,
2505 .idVendor = 0x046d,
2506 .idProduct = 0x0821,
2507 .bInterfaceClass = USB_CLASS_VIDEO,
2508 .bInterfaceSubClass = 1,
2509 .bInterfaceProtocol = 0,
2510 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2511 /* Logitech, Webcam B910 */
2512 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2513 | USB_DEVICE_ID_MATCH_INT_INFO,
2514 .idVendor = 0x046d,
2515 .idProduct = 0x0823,
2516 .bInterfaceClass = USB_CLASS_VIDEO,
2517 .bInterfaceSubClass = 1,
2518 .bInterfaceProtocol = 0,
2519 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2520 /* Logitech Quickcam Fusion */
2521 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2522 | USB_DEVICE_ID_MATCH_INT_INFO,
2523 .idVendor = 0x046d,
2524 .idProduct = 0x08c1,
2525 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2526 .bInterfaceSubClass = 1,
2527 .bInterfaceProtocol = 0 },
2528 /* Logitech Quickcam Orbit MP */
2529 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2530 | USB_DEVICE_ID_MATCH_INT_INFO,
2531 .idVendor = 0x046d,
2532 .idProduct = 0x08c2,
2533 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2534 .bInterfaceSubClass = 1,
2535 .bInterfaceProtocol = 0 },
2536 /* Logitech Quickcam Pro for Notebook */
2537 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2538 | USB_DEVICE_ID_MATCH_INT_INFO,
2539 .idVendor = 0x046d,
2540 .idProduct = 0x08c3,
2541 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2542 .bInterfaceSubClass = 1,
2543 .bInterfaceProtocol = 0 },
2544 /* Logitech Quickcam Pro 5000 */
2545 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2546 | USB_DEVICE_ID_MATCH_INT_INFO,
2547 .idVendor = 0x046d,
2548 .idProduct = 0x08c5,
2549 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2550 .bInterfaceSubClass = 1,
2551 .bInterfaceProtocol = 0 },
2552 /* Logitech Quickcam OEM Dell Notebook */
2553 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2554 | USB_DEVICE_ID_MATCH_INT_INFO,
2555 .idVendor = 0x046d,
2556 .idProduct = 0x08c6,
2557 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2558 .bInterfaceSubClass = 1,
2559 .bInterfaceProtocol = 0 },
2560 /* Logitech Quickcam OEM Cisco VT Camera II */
2561 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2562 | USB_DEVICE_ID_MATCH_INT_INFO,
2563 .idVendor = 0x046d,
2564 .idProduct = 0x08c7,
2565 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2566 .bInterfaceSubClass = 1,
2567 .bInterfaceProtocol = 0 },
2568 /* Logitech HD Pro Webcam C920 */
2569 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2570 | USB_DEVICE_ID_MATCH_INT_INFO,
2571 .idVendor = 0x046d,
2572 .idProduct = 0x082d,
2573 .bInterfaceClass = USB_CLASS_VIDEO,
2574 .bInterfaceSubClass = 1,
2575 .bInterfaceProtocol = 0,
2576 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
2577 /* Chicony CNF7129 (Asus EEE 100HE) */
2578 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2579 | USB_DEVICE_ID_MATCH_INT_INFO,
2580 .idVendor = 0x04f2,
2581 .idProduct = 0xb071,
2582 .bInterfaceClass = USB_CLASS_VIDEO,
2583 .bInterfaceSubClass = 1,
2584 .bInterfaceProtocol = 0,
2585 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2586 /* Chicony EasyCamera */
2587 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2588 | USB_DEVICE_ID_MATCH_INT_INFO,
2589 .idVendor = 0x04f2,
2590 .idProduct = 0xb5eb,
2591 .bInterfaceClass = USB_CLASS_VIDEO,
2592 .bInterfaceSubClass = 1,
2593 .bInterfaceProtocol = 0,
2594 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2595 /* Chicony Electronics Co., Ltd Integrated Camera */
2596 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2597 | USB_DEVICE_ID_MATCH_INT_INFO,
2598 .idVendor = 0x04f2,
2599 .idProduct = 0xb67c,
2600 .bInterfaceClass = USB_CLASS_VIDEO,
2601 .bInterfaceSubClass = 1,
2602 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2603 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 },
2604 /* Chicony EasyCamera */
2605 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2606 | USB_DEVICE_ID_MATCH_INT_INFO,
2607 .idVendor = 0x04f2,
2608 .idProduct = 0xb6ba,
2609 .bInterfaceClass = USB_CLASS_VIDEO,
2610 .bInterfaceSubClass = 1,
2611 .bInterfaceProtocol = 0,
2612 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2613 /* Chicony EasyCamera */
2614 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2615 | USB_DEVICE_ID_MATCH_INT_INFO,
2616 .idVendor = 0x04f2,
2617 .idProduct = 0xb746,
2618 .bInterfaceClass = USB_CLASS_VIDEO,
2619 .bInterfaceSubClass = 1,
2620 .bInterfaceProtocol = 0,
2621 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
2622 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2623 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2624 | USB_DEVICE_ID_MATCH_INT_INFO,
2625 .idVendor = 0x058f,
2626 .idProduct = 0x3820,
2627 .bInterfaceClass = USB_CLASS_VIDEO,
2628 .bInterfaceSubClass = 1,
2629 .bInterfaceProtocol = 0,
2630 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2631 /* Dell XPS m1530 */
2632 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2633 | USB_DEVICE_ID_MATCH_INT_INFO,
2634 .idVendor = 0x05a9,
2635 .idProduct = 0x2640,
2636 .bInterfaceClass = USB_CLASS_VIDEO,
2637 .bInterfaceSubClass = 1,
2638 .bInterfaceProtocol = 0,
2639 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2640 /* Dell SP2008WFP Monitor */
2641 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2642 | USB_DEVICE_ID_MATCH_INT_INFO,
2643 .idVendor = 0x05a9,
2644 .idProduct = 0x2641,
2645 .bInterfaceClass = USB_CLASS_VIDEO,
2646 .bInterfaceSubClass = 1,
2647 .bInterfaceProtocol = 0,
2648 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2649 /* Dell Alienware X51 */
2650 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2651 | USB_DEVICE_ID_MATCH_INT_INFO,
2652 .idVendor = 0x05a9,
2653 .idProduct = 0x2643,
2654 .bInterfaceClass = USB_CLASS_VIDEO,
2655 .bInterfaceSubClass = 1,
2656 .bInterfaceProtocol = 0,
2657 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2658 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2659 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2660 | USB_DEVICE_ID_MATCH_INT_INFO,
2661 .idVendor = 0x05a9,
2662 .idProduct = 0x264a,
2663 .bInterfaceClass = USB_CLASS_VIDEO,
2664 .bInterfaceSubClass = 1,
2665 .bInterfaceProtocol = 0,
2666 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2667 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2668 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2669 | USB_DEVICE_ID_MATCH_INT_INFO,
2670 .idVendor = 0x05a9,
2671 .idProduct = 0x7670,
2672 .bInterfaceClass = USB_CLASS_VIDEO,
2673 .bInterfaceSubClass = 1,
2674 .bInterfaceProtocol = 0,
2675 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2676 /* Apple Built-In iSight */
2677 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2678 | USB_DEVICE_ID_MATCH_INT_INFO,
2679 .idVendor = 0x05ac,
2680 .idProduct = 0x8501,
2681 .bInterfaceClass = USB_CLASS_VIDEO,
2682 .bInterfaceSubClass = 1,
2683 .bInterfaceProtocol = 0,
2684 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2685 | UVC_QUIRK_BUILTIN_ISIGHT) },
2686 /* Apple FaceTime HD Camera (Built-In) */
2687 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2688 | USB_DEVICE_ID_MATCH_INT_INFO,
2689 .idVendor = 0x05ac,
2690 .idProduct = 0x8514,
2691 .bInterfaceClass = USB_CLASS_VIDEO,
2692 .bInterfaceSubClass = 1,
2693 .bInterfaceProtocol = 0,
2694 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2695 /* Apple Built-In iSight via iBridge */
2696 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2697 | USB_DEVICE_ID_MATCH_INT_INFO,
2698 .idVendor = 0x05ac,
2699 .idProduct = 0x8600,
2700 .bInterfaceClass = USB_CLASS_VIDEO,
2701 .bInterfaceSubClass = 1,
2702 .bInterfaceProtocol = 0,
2703 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2704 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2705 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2706 | USB_DEVICE_ID_MATCH_INT_INFO,
2707 .idVendor = 0x05c8,
2708 .idProduct = 0x0403,
2709 .bInterfaceClass = USB_CLASS_VIDEO,
2710 .bInterfaceSubClass = 1,
2711 .bInterfaceProtocol = 0,
2712 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2713 /* Genesys Logic USB 2.0 PC Camera */
2714 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2715 | USB_DEVICE_ID_MATCH_INT_INFO,
2716 .idVendor = 0x05e3,
2717 .idProduct = 0x0505,
2718 .bInterfaceClass = USB_CLASS_VIDEO,
2719 .bInterfaceSubClass = 1,
2720 .bInterfaceProtocol = 0,
2721 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2722 /* Hercules Classic Silver */
2723 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2724 | USB_DEVICE_ID_MATCH_INT_INFO,
2725 .idVendor = 0x06f8,
2726 .idProduct = 0x300c,
2727 .bInterfaceClass = USB_CLASS_VIDEO,
2728 .bInterfaceSubClass = 1,
2729 .bInterfaceProtocol = 0,
2730 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2731 /* ViMicro Vega */
2732 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2733 | USB_DEVICE_ID_MATCH_INT_INFO,
2734 .idVendor = 0x0ac8,
2735 .idProduct = 0x332d,
2736 .bInterfaceClass = USB_CLASS_VIDEO,
2737 .bInterfaceSubClass = 1,
2738 .bInterfaceProtocol = 0,
2739 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2740 /* ViMicro - Minoru3D */
2741 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2742 | USB_DEVICE_ID_MATCH_INT_INFO,
2743 .idVendor = 0x0ac8,
2744 .idProduct = 0x3410,
2745 .bInterfaceClass = USB_CLASS_VIDEO,
2746 .bInterfaceSubClass = 1,
2747 .bInterfaceProtocol = 0,
2748 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2749 /* ViMicro Venus - Minoru3D */
2750 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2751 | USB_DEVICE_ID_MATCH_INT_INFO,
2752 .idVendor = 0x0ac8,
2753 .idProduct = 0x3420,
2754 .bInterfaceClass = USB_CLASS_VIDEO,
2755 .bInterfaceSubClass = 1,
2756 .bInterfaceProtocol = 0,
2757 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2758 /* Ophir Optronics - SPCAM 620U */
2759 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2760 | USB_DEVICE_ID_MATCH_INT_INFO,
2761 .idVendor = 0x0bd3,
2762 .idProduct = 0x0555,
2763 .bInterfaceClass = USB_CLASS_VIDEO,
2764 .bInterfaceSubClass = 1,
2765 .bInterfaceProtocol = 0,
2766 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2767 /* MT6227 */
2768 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2769 | USB_DEVICE_ID_MATCH_INT_INFO,
2770 .idVendor = 0x0e8d,
2771 .idProduct = 0x0004,
2772 .bInterfaceClass = USB_CLASS_VIDEO,
2773 .bInterfaceSubClass = 1,
2774 .bInterfaceProtocol = 0,
2775 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2776 | UVC_QUIRK_PROBE_DEF) },
2777 /* IMC Networks (Medion Akoya) */
2778 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2779 | USB_DEVICE_ID_MATCH_INT_INFO,
2780 .idVendor = 0x13d3,
2781 .idProduct = 0x5103,
2782 .bInterfaceClass = USB_CLASS_VIDEO,
2783 .bInterfaceSubClass = 1,
2784 .bInterfaceProtocol = 0,
2785 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2786 /* JMicron USB2.0 XGA WebCam */
2787 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2788 | USB_DEVICE_ID_MATCH_INT_INFO,
2789 .idVendor = 0x152d,
2790 .idProduct = 0x0310,
2791 .bInterfaceClass = USB_CLASS_VIDEO,
2792 .bInterfaceSubClass = 1,
2793 .bInterfaceProtocol = 0,
2794 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2795 /* Syntek (HP Spartan) */
2796 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2797 | USB_DEVICE_ID_MATCH_INT_INFO,
2798 .idVendor = 0x174f,
2799 .idProduct = 0x5212,
2800 .bInterfaceClass = USB_CLASS_VIDEO,
2801 .bInterfaceSubClass = 1,
2802 .bInterfaceProtocol = 0,
2803 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2804 /* Syntek (Samsung Q310) */
2805 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2806 | USB_DEVICE_ID_MATCH_INT_INFO,
2807 .idVendor = 0x174f,
2808 .idProduct = 0x5931,
2809 .bInterfaceClass = USB_CLASS_VIDEO,
2810 .bInterfaceSubClass = 1,
2811 .bInterfaceProtocol = 0,
2812 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2813 /* Syntek (Packard Bell EasyNote MX52 */
2814 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2815 | USB_DEVICE_ID_MATCH_INT_INFO,
2816 .idVendor = 0x174f,
2817 .idProduct = 0x8a12,
2818 .bInterfaceClass = USB_CLASS_VIDEO,
2819 .bInterfaceSubClass = 1,
2820 .bInterfaceProtocol = 0,
2821 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2822 /* Syntek (Asus F9SG) */
2823 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2824 | USB_DEVICE_ID_MATCH_INT_INFO,
2825 .idVendor = 0x174f,
2826 .idProduct = 0x8a31,
2827 .bInterfaceClass = USB_CLASS_VIDEO,
2828 .bInterfaceSubClass = 1,
2829 .bInterfaceProtocol = 0,
2830 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2831 /* Syntek (Asus U3S) */
2832 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2833 | USB_DEVICE_ID_MATCH_INT_INFO,
2834 .idVendor = 0x174f,
2835 .idProduct = 0x8a33,
2836 .bInterfaceClass = USB_CLASS_VIDEO,
2837 .bInterfaceSubClass = 1,
2838 .bInterfaceProtocol = 0,
2839 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2840 /* Syntek (JAOtech Smart Terminal) */
2841 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2842 | USB_DEVICE_ID_MATCH_INT_INFO,
2843 .idVendor = 0x174f,
2844 .idProduct = 0x8a34,
2845 .bInterfaceClass = USB_CLASS_VIDEO,
2846 .bInterfaceSubClass = 1,
2847 .bInterfaceProtocol = 0,
2848 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2849 /* Miricle 307K */
2850 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2851 | USB_DEVICE_ID_MATCH_INT_INFO,
2852 .idVendor = 0x17dc,
2853 .idProduct = 0x0202,
2854 .bInterfaceClass = USB_CLASS_VIDEO,
2855 .bInterfaceSubClass = 1,
2856 .bInterfaceProtocol = 0,
2857 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2858 /* Lenovo Thinkpad SL400/SL500 */
2859 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2860 | USB_DEVICE_ID_MATCH_INT_INFO,
2861 .idVendor = 0x17ef,
2862 .idProduct = 0x480b,
2863 .bInterfaceClass = USB_CLASS_VIDEO,
2864 .bInterfaceSubClass = 1,
2865 .bInterfaceProtocol = 0,
2866 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2867 /* Aveo Technology USB 2.0 Camera */
2868 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2869 | USB_DEVICE_ID_MATCH_INT_INFO,
2870 .idVendor = 0x1871,
2871 .idProduct = 0x0306,
2872 .bInterfaceClass = USB_CLASS_VIDEO,
2873 .bInterfaceSubClass = 1,
2874 .bInterfaceProtocol = 0,
2875 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2876 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2877 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2878 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2879 | USB_DEVICE_ID_MATCH_INT_INFO,
2880 .idVendor = 0x1871,
2881 .idProduct = 0x0516,
2882 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2883 .bInterfaceSubClass = 1,
2884 .bInterfaceProtocol = 0 },
2885 /* Ecamm Pico iMage */
2886 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2887 | USB_DEVICE_ID_MATCH_INT_INFO,
2888 .idVendor = 0x18cd,
2889 .idProduct = 0xcafe,
2890 .bInterfaceClass = USB_CLASS_VIDEO,
2891 .bInterfaceSubClass = 1,
2892 .bInterfaceProtocol = 0,
2893 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2894 /* Manta MM-353 Plako */
2895 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2896 | USB_DEVICE_ID_MATCH_INT_INFO,
2897 .idVendor = 0x18ec,
2898 .idProduct = 0x3188,
2899 .bInterfaceClass = USB_CLASS_VIDEO,
2900 .bInterfaceSubClass = 1,
2901 .bInterfaceProtocol = 0,
2902 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2903 /* FSC WebCam V30S */
2904 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2905 | USB_DEVICE_ID_MATCH_INT_INFO,
2906 .idVendor = 0x18ec,
2907 .idProduct = 0x3288,
2908 .bInterfaceClass = USB_CLASS_VIDEO,
2909 .bInterfaceSubClass = 1,
2910 .bInterfaceProtocol = 0,
2911 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2912 /* Arkmicro unbranded */
2913 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2914 | USB_DEVICE_ID_MATCH_INT_INFO,
2915 .idVendor = 0x18ec,
2916 .idProduct = 0x3290,
2917 .bInterfaceClass = USB_CLASS_VIDEO,
2918 .bInterfaceSubClass = 1,
2919 .bInterfaceProtocol = 0,
2920 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2921 /* The Imaging Source USB CCD cameras */
2922 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2923 | USB_DEVICE_ID_MATCH_INT_INFO,
2924 .idVendor = 0x199e,
2925 .idProduct = 0x8102,
2926 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2927 .bInterfaceSubClass = 1,
2928 .bInterfaceProtocol = 0 },
2929 /* Bodelin ProScopeHR */
2930 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2931 | USB_DEVICE_ID_MATCH_DEV_HI
2932 | USB_DEVICE_ID_MATCH_INT_INFO,
2933 .idVendor = 0x19ab,
2934 .idProduct = 0x1000,
2935 .bcdDevice_hi = 0x0126,
2936 .bInterfaceClass = USB_CLASS_VIDEO,
2937 .bInterfaceSubClass = 1,
2938 .bInterfaceProtocol = 0,
2939 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
2940 /* MSI StarCam 370i */
2941 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2942 | USB_DEVICE_ID_MATCH_INT_INFO,
2943 .idVendor = 0x1b3b,
2944 .idProduct = 0x2951,
2945 .bInterfaceClass = USB_CLASS_VIDEO,
2946 .bInterfaceSubClass = 1,
2947 .bInterfaceProtocol = 0,
2948 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2949 /* Generalplus Technology Inc. 808 Camera */
2950 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2951 | USB_DEVICE_ID_MATCH_INT_INFO,
2952 .idVendor = 0x1b3f,
2953 .idProduct = 0x2002,
2954 .bInterfaceClass = USB_CLASS_VIDEO,
2955 .bInterfaceSubClass = 1,
2956 .bInterfaceProtocol = 0,
2957 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2958 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */
2959 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2960 | USB_DEVICE_ID_MATCH_INT_INFO,
2961 .idVendor = 0x1bcf,
2962 .idProduct = 0x0b40,
2963 .bInterfaceClass = USB_CLASS_VIDEO,
2964 .bInterfaceSubClass = 1,
2965 .bInterfaceProtocol = 0,
2966 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2967 .uvc_version = 0x010a,
2968 } },
2969 /* SiGma Micro USB Web Camera */
2970 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2971 | USB_DEVICE_ID_MATCH_INT_INFO,
2972 .idVendor = 0x1c4f,
2973 .idProduct = 0x3000,
2974 .bInterfaceClass = USB_CLASS_VIDEO,
2975 .bInterfaceSubClass = 1,
2976 .bInterfaceProtocol = 0,
2977 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2978 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
2979 /* Oculus VR Positional Tracker DK2 */
2980 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2981 | USB_DEVICE_ID_MATCH_INT_INFO,
2982 .idVendor = 0x2833,
2983 .idProduct = 0x0201,
2984 .bInterfaceClass = USB_CLASS_VIDEO,
2985 .bInterfaceSubClass = 1,
2986 .bInterfaceProtocol = 0,
2987 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
2988 /* Oculus VR Rift Sensor */
2989 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2990 | USB_DEVICE_ID_MATCH_INT_INFO,
2991 .idVendor = 0x2833,
2992 .idProduct = 0x0211,
2993 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2994 .bInterfaceSubClass = 1,
2995 .bInterfaceProtocol = 0,
2996 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
2997 /* GEO Semiconductor GC6500 */
2998 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2999 | USB_DEVICE_ID_MATCH_INT_INFO,
3000 .idVendor = 0x29fe,
3001 .idProduct = 0x4d53,
3002 .bInterfaceClass = USB_CLASS_VIDEO,
3003 .bInterfaceSubClass = 1,
3004 .bInterfaceProtocol = 0,
3005 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3006 /* SunplusIT Inc HD Camera */
3007 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3008 | USB_DEVICE_ID_MATCH_INT_INFO,
3009 .idVendor = 0x2b7e,
3010 .idProduct = 0xb752,
3011 .bInterfaceClass = USB_CLASS_VIDEO,
3012 .bInterfaceSubClass = 1,
3013 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
3014 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 },
3015 /* Lenovo Integrated Camera */
3016 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3017 | USB_DEVICE_ID_MATCH_INT_INFO,
3018 .idVendor = 0x30c9,
3019 .idProduct = 0x0093,
3020 .bInterfaceClass = USB_CLASS_VIDEO,
3021 .bInterfaceSubClass = 1,
3022 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
3023 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_uvc11 },
3024 /* Sonix Technology USB 2.0 Camera */
3025 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3026 | USB_DEVICE_ID_MATCH_INT_INFO,
3027 .idVendor = 0x3277,
3028 .idProduct = 0x0072,
3029 .bInterfaceClass = USB_CLASS_VIDEO,
3030 .bInterfaceSubClass = 1,
3031 .bInterfaceProtocol = 0,
3032 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
3033 /* Acer EasyCamera */
3034 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3035 | USB_DEVICE_ID_MATCH_INT_INFO,
3036 .idVendor = 0x5986,
3037 .idProduct = 0x1172,
3038 .bInterfaceClass = USB_CLASS_VIDEO,
3039 .bInterfaceSubClass = 1,
3040 .bInterfaceProtocol = 0,
3041 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
3042 /* Acer EasyCamera */
3043 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3044 | USB_DEVICE_ID_MATCH_INT_INFO,
3045 .idVendor = 0x5986,
3046 .idProduct = 0x1180,
3047 .bInterfaceClass = USB_CLASS_VIDEO,
3048 .bInterfaceSubClass = 1,
3049 .bInterfaceProtocol = 0,
3050 .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
3051 /* Intel D410/ASR depth camera */
3052 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3053 | USB_DEVICE_ID_MATCH_INT_INFO,
3054 .idVendor = 0x8086,
3055 .idProduct = 0x0ad2,
3056 .bInterfaceClass = USB_CLASS_VIDEO,
3057 .bInterfaceSubClass = 1,
3058 .bInterfaceProtocol = 0,
3059 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3060 /* Intel D415/ASRC depth camera */
3061 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3062 | USB_DEVICE_ID_MATCH_INT_INFO,
3063 .idVendor = 0x8086,
3064 .idProduct = 0x0ad3,
3065 .bInterfaceClass = USB_CLASS_VIDEO,
3066 .bInterfaceSubClass = 1,
3067 .bInterfaceProtocol = 0,
3068 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3069 /* Intel D430/AWG depth camera */
3070 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3071 | USB_DEVICE_ID_MATCH_INT_INFO,
3072 .idVendor = 0x8086,
3073 .idProduct = 0x0ad4,
3074 .bInterfaceClass = USB_CLASS_VIDEO,
3075 .bInterfaceSubClass = 1,
3076 .bInterfaceProtocol = 0,
3077 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3078 /* Intel RealSense D4M */
3079 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3080 | USB_DEVICE_ID_MATCH_INT_INFO,
3081 .idVendor = 0x8086,
3082 .idProduct = 0x0b03,
3083 .bInterfaceClass = USB_CLASS_VIDEO,
3084 .bInterfaceSubClass = 1,
3085 .bInterfaceProtocol = 0,
3086 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3087 /* Intel D435/AWGC depth camera */
3088 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3089 | USB_DEVICE_ID_MATCH_INT_INFO,
3090 .idVendor = 0x8086,
3091 .idProduct = 0x0b07,
3092 .bInterfaceClass = USB_CLASS_VIDEO,
3093 .bInterfaceSubClass = 1,
3094 .bInterfaceProtocol = 0,
3095 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3096 /* Intel D435i depth camera */
3097 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3098 | USB_DEVICE_ID_MATCH_INT_INFO,
3099 .idVendor = 0x8086,
3100 .idProduct = 0x0b3a,
3101 .bInterfaceClass = USB_CLASS_VIDEO,
3102 .bInterfaceSubClass = 1,
3103 .bInterfaceProtocol = 0,
3104 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3105 /* Intel D405 Depth Camera */
3106 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3107 | USB_DEVICE_ID_MATCH_INT_INFO,
3108 .idVendor = 0x8086,
3109 .idProduct = 0x0b5b,
3110 .bInterfaceClass = USB_CLASS_VIDEO,
3111 .bInterfaceSubClass = 1,
3112 .bInterfaceProtocol = 0,
3113 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3114 /* Intel D455 Depth Camera */
3115 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3116 | USB_DEVICE_ID_MATCH_INT_INFO,
3117 .idVendor = 0x8086,
3118 .idProduct = 0x0b5c,
3119 .bInterfaceClass = USB_CLASS_VIDEO,
3120 .bInterfaceSubClass = 1,
3121 .bInterfaceProtocol = 0,
3122 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3123 /* Generic USB Video Class */
3124 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3125 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3126 {}
3127 };
3128
3129 MODULE_DEVICE_TABLE(usb, uvc_ids);
3130
3131 struct uvc_driver uvc_driver = {
3132 .driver = {
3133 .name = "uvcvideo",
3134 .probe = uvc_probe,
3135 .disconnect = uvc_disconnect,
3136 .suspend = uvc_suspend,
3137 .resume = uvc_resume,
3138 .reset_resume = uvc_reset_resume,
3139 .id_table = uvc_ids,
3140 .supports_autosuspend = 1,
3141 },
3142 };
3143
uvc_init(void)3144 static int __init uvc_init(void)
3145 {
3146 int ret;
3147
3148 uvc_debugfs_init();
3149
3150 ret = usb_register(&uvc_driver.driver);
3151 if (ret < 0) {
3152 uvc_debugfs_cleanup();
3153 return ret;
3154 }
3155
3156 return 0;
3157 }
3158
uvc_cleanup(void)3159 static void __exit uvc_cleanup(void)
3160 {
3161 usb_deregister(&uvc_driver.driver);
3162 uvc_debugfs_cleanup();
3163 }
3164
3165 module_init(uvc_init);
3166 module_exit(uvc_cleanup);
3167
3168 MODULE_AUTHOR(DRIVER_AUTHOR);
3169 MODULE_DESCRIPTION(DRIVER_DESC);
3170 MODULE_LICENSE("GPL");
3171 MODULE_VERSION(DRIVER_VERSION);
3172
3173