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 ([email protected])
7 */
8
9 #include <linux/atomic.h>
10 #include <linux/bits.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/kernel.h>
13 #include <linux/list.h>
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/usb.h>
17 #include <linux/usb/quirks.h>
18 #include <linux/usb/uvc.h>
19 #include <linux/videodev2.h>
20 #include <linux/vmalloc.h>
21 #include <linux/wait.h>
22 #include <linux/unaligned.h>
23
24 #include <media/v4l2-common.h>
25 #include <media/v4l2-ioctl.h>
26
27 #include "uvcvideo.h"
28
29 #define DRIVER_AUTHOR "Laurent Pinchart " \
30 "<[email protected]>"
31 #define DRIVER_DESC "USB Video Class driver"
32
33 unsigned int uvc_clock_param = CLOCK_MONOTONIC;
34 unsigned int uvc_hw_timestamps_param;
35 unsigned int uvc_no_drop_param = 1;
36 static unsigned int uvc_quirks_param = -1;
37 unsigned int uvc_dbg_param;
38 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
39
40 /* ------------------------------------------------------------------------
41 * Utility functions
42 */
43
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)44 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
45 u8 epaddr)
46 {
47 struct usb_host_endpoint *ep;
48 unsigned int i;
49
50 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
51 ep = &alts->endpoint[i];
52 if (ep->desc.bEndpointAddress == epaddr)
53 return ep;
54 }
55
56 return NULL;
57 }
58
uvc_colorspace(const u8 primaries)59 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
60 {
61 static const enum v4l2_colorspace colorprimaries[] = {
62 V4L2_COLORSPACE_SRGB, /* Unspecified */
63 V4L2_COLORSPACE_SRGB,
64 V4L2_COLORSPACE_470_SYSTEM_M,
65 V4L2_COLORSPACE_470_SYSTEM_BG,
66 V4L2_COLORSPACE_SMPTE170M,
67 V4L2_COLORSPACE_SMPTE240M,
68 };
69
70 if (primaries < ARRAY_SIZE(colorprimaries))
71 return colorprimaries[primaries];
72
73 return V4L2_COLORSPACE_SRGB; /* Reserved */
74 }
75
uvc_xfer_func(const u8 transfer_characteristics)76 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
77 {
78 /*
79 * V4L2 does not currently have definitions for all possible values of
80 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
81 * values, the mapping below should be updated.
82 *
83 * Substitutions are taken from the mapping given for
84 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
85 */
86 static const enum v4l2_xfer_func xfer_funcs[] = {
87 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
88 V4L2_XFER_FUNC_709,
89 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
90 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
91 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
92 V4L2_XFER_FUNC_SMPTE240M,
93 V4L2_XFER_FUNC_NONE,
94 V4L2_XFER_FUNC_SRGB,
95 };
96
97 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
98 return xfer_funcs[transfer_characteristics];
99
100 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
101 }
102
uvc_ycbcr_enc(const u8 matrix_coefficients)103 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
104 {
105 /*
106 * V4L2 does not currently have definitions for all possible values of
107 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
108 * values, the mapping below should be updated.
109 *
110 * Substitutions are taken from the mapping given for
111 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
112 *
113 * FCC is assumed to be close enough to 601.
114 */
115 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
116 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
117 V4L2_YCBCR_ENC_709,
118 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
119 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
120 V4L2_YCBCR_ENC_601,
121 V4L2_YCBCR_ENC_SMPTE240M,
122 };
123
124 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
125 return ycbcr_encs[matrix_coefficients];
126
127 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
128 }
129
130 /* ------------------------------------------------------------------------
131 * Terminal and unit management
132 */
133
uvc_entity_by_id(struct uvc_device * dev,int id)134 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
135 {
136 struct uvc_entity *entity;
137
138 list_for_each_entry(entity, &dev->entities, list) {
139 if (entity->id == id)
140 return entity;
141 }
142
143 return NULL;
144 }
145
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)146 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
147 int id, struct uvc_entity *entity)
148 {
149 unsigned int i;
150
151 if (entity == NULL)
152 entity = list_entry(&dev->entities, struct uvc_entity, list);
153
154 list_for_each_entry_continue(entity, &dev->entities, list) {
155 for (i = 0; i < entity->bNrInPins; ++i)
156 if (entity->baSourceID[i] == id)
157 return entity;
158 }
159
160 return NULL;
161 }
162
uvc_stream_by_id(struct uvc_device * dev,int id)163 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
164 {
165 struct uvc_streaming *stream;
166
167 list_for_each_entry(stream, &dev->streams, list) {
168 if (stream->header.bTerminalLink == id)
169 return stream;
170 }
171
172 return NULL;
173 }
174
175 /* ------------------------------------------------------------------------
176 * Streaming Object Management
177 */
178
uvc_stream_delete(struct uvc_streaming * stream)179 static void uvc_stream_delete(struct uvc_streaming *stream)
180 {
181 if (stream->async_wq)
182 destroy_workqueue(stream->async_wq);
183
184 mutex_destroy(&stream->mutex);
185
186 usb_put_intf(stream->intf);
187
188 kfree(stream->formats);
189 kfree(stream->header.bmaControls);
190 kfree(stream);
191 }
192
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)193 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
194 struct usb_interface *intf)
195 {
196 struct uvc_streaming *stream;
197
198 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
199 if (stream == NULL)
200 return NULL;
201
202 mutex_init(&stream->mutex);
203
204 stream->dev = dev;
205 stream->intf = usb_get_intf(intf);
206 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
207
208 /* Allocate a stream specific work queue for asynchronous tasks. */
209 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
210 0);
211 if (!stream->async_wq) {
212 uvc_stream_delete(stream);
213 return NULL;
214 }
215
216 return stream;
217 }
218
219 /* ------------------------------------------------------------------------
220 * Descriptors parsing
221 */
222
uvc_parse_frame(struct uvc_device * dev,struct uvc_streaming * streaming,struct uvc_format * format,struct uvc_frame * frame,u32 ** intervals,u8 ftype,int width_multiplier,const unsigned char * buffer,int buflen)223 static int uvc_parse_frame(struct uvc_device *dev,
224 struct uvc_streaming *streaming,
225 struct uvc_format *format, struct uvc_frame *frame,
226 u32 **intervals, u8 ftype, int width_multiplier,
227 const unsigned char *buffer, int buflen)
228 {
229 struct usb_host_interface *alts = streaming->intf->cur_altsetting;
230 unsigned int maxIntervalIndex;
231 unsigned int interval;
232 unsigned int i, n;
233
234 if (ftype != UVC_VS_FRAME_FRAME_BASED)
235 n = buflen > 25 ? buffer[25] : 0;
236 else
237 n = buflen > 21 ? buffer[21] : 0;
238
239 n = n ? n : 3;
240
241 if (buflen < 26 + 4 * n) {
242 uvc_dbg(dev, DESCR,
243 "device %d videostreaming interface %d FRAME error\n",
244 dev->udev->devnum, alts->desc.bInterfaceNumber);
245 return -EINVAL;
246 }
247
248 frame->bFrameIndex = buffer[3];
249 frame->bmCapabilities = buffer[4];
250 frame->wWidth = get_unaligned_le16(&buffer[5]) * width_multiplier;
251 frame->wHeight = get_unaligned_le16(&buffer[7]);
252 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
253 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
254 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
255 frame->dwMaxVideoFrameBufferSize =
256 get_unaligned_le32(&buffer[17]);
257 frame->dwDefaultFrameInterval =
258 get_unaligned_le32(&buffer[21]);
259 frame->bFrameIntervalType = buffer[25];
260 } else {
261 frame->dwMaxVideoFrameBufferSize = 0;
262 frame->dwDefaultFrameInterval =
263 get_unaligned_le32(&buffer[17]);
264 frame->bFrameIntervalType = buffer[21];
265 }
266
267 /*
268 * Copy the frame intervals.
269 *
270 * Some bogus devices report dwMinFrameInterval equal to
271 * dwMaxFrameInterval and have dwFrameIntervalStep set to zero. Setting
272 * all null intervals to 1 fixes the problem and some other divisions
273 * by zero that could happen.
274 */
275 frame->dwFrameInterval = *intervals;
276
277 for (i = 0; i < n; ++i) {
278 interval = get_unaligned_le32(&buffer[26 + 4 * i]);
279 (*intervals)[i] = interval ? interval : 1;
280 }
281
282 /*
283 * Apply more fixes, quirks and workarounds to handle incorrect or
284 * broken descriptors.
285 */
286
287 /*
288 * Several UVC chipsets screw up dwMaxVideoFrameBufferSize completely.
289 * Observed behaviours range from setting the value to 1.1x the actual
290 * frame size to hardwiring the 16 low bits to 0. This results in a
291 * higher than necessary memory usage as well as a wrong image size
292 * information. For uncompressed formats this can be fixed by computing
293 * the value from the frame size.
294 */
295 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
296 frame->dwMaxVideoFrameBufferSize = format->bpp * frame->wWidth
297 * frame->wHeight / 8;
298
299 /*
300 * Clamp the default frame interval to the boundaries. A zero
301 * bFrameIntervalType value indicates a continuous frame interval
302 * range, with dwFrameInterval[0] storing the minimum value and
303 * dwFrameInterval[1] storing the maximum value.
304 */
305 maxIntervalIndex = frame->bFrameIntervalType ? n - 1 : 1;
306 frame->dwDefaultFrameInterval =
307 clamp(frame->dwDefaultFrameInterval,
308 frame->dwFrameInterval[0],
309 frame->dwFrameInterval[maxIntervalIndex]);
310
311 /*
312 * Some devices report frame intervals that are not functional. If the
313 * corresponding quirk is set, restrict operation to the first interval
314 * only.
315 */
316 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
317 frame->bFrameIntervalType = 1;
318 (*intervals)[0] = frame->dwDefaultFrameInterval;
319 }
320
321 uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
322 frame->wWidth, frame->wHeight,
323 10000000 / frame->dwDefaultFrameInterval,
324 (100000000 / frame->dwDefaultFrameInterval) % 10);
325
326 *intervals += n;
327
328 return buffer[0];
329 }
330
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)331 static int uvc_parse_format(struct uvc_device *dev,
332 struct uvc_streaming *streaming, struct uvc_format *format,
333 struct uvc_frame *frames, u32 **intervals, const unsigned char *buffer,
334 int buflen)
335 {
336 struct usb_host_interface *alts = streaming->intf->cur_altsetting;
337 const struct uvc_format_desc *fmtdesc;
338 struct uvc_frame *frame;
339 const unsigned char *start = buffer;
340 unsigned int width_multiplier = 1;
341 unsigned int i, n;
342 u8 ftype;
343 int ret;
344
345 format->type = buffer[2];
346 format->index = buffer[3];
347 format->frames = frames;
348
349 switch (buffer[2]) {
350 case UVC_VS_FORMAT_UNCOMPRESSED:
351 case UVC_VS_FORMAT_FRAME_BASED:
352 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
353 if (buflen < n) {
354 uvc_dbg(dev, DESCR,
355 "device %d videostreaming interface %d FORMAT error\n",
356 dev->udev->devnum,
357 alts->desc.bInterfaceNumber);
358 return -EINVAL;
359 }
360
361 /* Find the format descriptor from its GUID. */
362 fmtdesc = uvc_format_by_guid(&buffer[5]);
363
364 if (!fmtdesc) {
365 /*
366 * Unknown video formats are not fatal errors, the
367 * caller will skip this descriptor.
368 */
369 dev_info(&streaming->intf->dev,
370 "Unknown video format %pUl\n", &buffer[5]);
371 return 0;
372 }
373
374 format->fcc = fmtdesc->fcc;
375 format->bpp = buffer[21];
376
377 /*
378 * Some devices report a format that doesn't match what they
379 * really send.
380 */
381 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
382 if (format->fcc == V4L2_PIX_FMT_YUYV) {
383 format->fcc = V4L2_PIX_FMT_GREY;
384 format->bpp = 8;
385 width_multiplier = 2;
386 }
387 }
388
389 /* Some devices report bpp that doesn't match the format. */
390 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
391 const struct v4l2_format_info *info =
392 v4l2_format_info(format->fcc);
393
394 if (info) {
395 unsigned int div = info->hdiv * info->vdiv;
396
397 n = info->bpp[0] * div;
398 for (i = 1; i < info->comp_planes; i++)
399 n += info->bpp[i];
400
401 format->bpp = DIV_ROUND_UP(8 * n, div);
402 }
403 }
404
405 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
406 ftype = UVC_VS_FRAME_UNCOMPRESSED;
407 } else {
408 ftype = UVC_VS_FRAME_FRAME_BASED;
409 if (buffer[27])
410 format->flags = UVC_FMT_FLAG_COMPRESSED;
411 }
412 break;
413
414 case UVC_VS_FORMAT_MJPEG:
415 if (buflen < 11) {
416 uvc_dbg(dev, DESCR,
417 "device %d videostreaming interface %d FORMAT error\n",
418 dev->udev->devnum,
419 alts->desc.bInterfaceNumber);
420 return -EINVAL;
421 }
422
423 format->fcc = V4L2_PIX_FMT_MJPEG;
424 format->flags = UVC_FMT_FLAG_COMPRESSED;
425 format->bpp = 0;
426 ftype = UVC_VS_FRAME_MJPEG;
427 break;
428
429 case UVC_VS_FORMAT_DV:
430 if (buflen < 9) {
431 uvc_dbg(dev, DESCR,
432 "device %d videostreaming interface %d FORMAT error\n",
433 dev->udev->devnum,
434 alts->desc.bInterfaceNumber);
435 return -EINVAL;
436 }
437
438 if ((buffer[8] & 0x7f) > 2) {
439 uvc_dbg(dev, DESCR,
440 "device %d videostreaming interface %d: unknown DV format %u\n",
441 dev->udev->devnum,
442 alts->desc.bInterfaceNumber, buffer[8]);
443 return -EINVAL;
444 }
445
446 format->fcc = V4L2_PIX_FMT_DV;
447 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
448 format->bpp = 0;
449 ftype = 0;
450
451 /* Create a dummy frame descriptor. */
452 frame = &frames[0];
453 memset(frame, 0, sizeof(*frame));
454 frame->bFrameIntervalType = 1;
455 frame->dwDefaultFrameInterval = 1;
456 frame->dwFrameInterval = *intervals;
457 *(*intervals)++ = 1;
458 format->nframes = 1;
459 break;
460
461 case UVC_VS_FORMAT_MPEG2TS:
462 case UVC_VS_FORMAT_STREAM_BASED:
463 /* Not supported yet. */
464 default:
465 uvc_dbg(dev, DESCR,
466 "device %d videostreaming interface %d unsupported format %u\n",
467 dev->udev->devnum, alts->desc.bInterfaceNumber,
468 buffer[2]);
469 return -EINVAL;
470 }
471
472 uvc_dbg(dev, DESCR, "Found format %p4cc", &format->fcc);
473
474 buflen -= buffer[0];
475 buffer += buffer[0];
476
477 /*
478 * Parse the frame descriptors. Only uncompressed, MJPEG and frame
479 * based formats have frame descriptors.
480 */
481 if (ftype) {
482 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
483 buffer[2] == ftype) {
484 frame = &frames[format->nframes];
485 ret = uvc_parse_frame(dev, streaming, format, frame,
486 intervals, ftype, width_multiplier,
487 buffer, buflen);
488 if (ret < 0)
489 return ret;
490 format->nframes++;
491 buflen -= ret;
492 buffer += ret;
493 }
494 }
495
496 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
497 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
498 buflen -= buffer[0];
499 buffer += buffer[0];
500 }
501
502 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
503 buffer[2] == UVC_VS_COLORFORMAT) {
504 if (buflen < 6) {
505 uvc_dbg(dev, DESCR,
506 "device %d videostreaming interface %d COLORFORMAT error\n",
507 dev->udev->devnum,
508 alts->desc.bInterfaceNumber);
509 return -EINVAL;
510 }
511
512 format->colorspace = uvc_colorspace(buffer[3]);
513 format->xfer_func = uvc_xfer_func(buffer[4]);
514 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
515
516 buflen -= buffer[0];
517 buffer += buffer[0];
518 } else {
519 format->colorspace = V4L2_COLORSPACE_SRGB;
520 }
521
522 return buffer - start;
523 }
524
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)525 static int uvc_parse_streaming(struct uvc_device *dev,
526 struct usb_interface *intf)
527 {
528 struct uvc_streaming *streaming = NULL;
529 struct uvc_format *format;
530 struct uvc_frame *frame;
531 struct usb_host_interface *alts = &intf->altsetting[0];
532 const unsigned char *_buffer, *buffer = alts->extra;
533 int _buflen, buflen = alts->extralen;
534 unsigned int nformats = 0, nframes = 0, nintervals = 0;
535 unsigned int size, i, n, p;
536 u32 *interval;
537 u16 psize;
538 int ret = -EINVAL;
539
540 if (intf->cur_altsetting->desc.bInterfaceSubClass
541 != UVC_SC_VIDEOSTREAMING) {
542 uvc_dbg(dev, DESCR,
543 "device %d interface %d isn't a video streaming interface\n",
544 dev->udev->devnum,
545 intf->altsetting[0].desc.bInterfaceNumber);
546 return -EINVAL;
547 }
548
549 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
550 uvc_dbg(dev, DESCR,
551 "device %d interface %d is already claimed\n",
552 dev->udev->devnum,
553 intf->altsetting[0].desc.bInterfaceNumber);
554 return -EINVAL;
555 }
556
557 streaming = uvc_stream_new(dev, intf);
558 if (streaming == NULL) {
559 usb_driver_release_interface(&uvc_driver.driver, intf);
560 return -ENOMEM;
561 }
562
563 /*
564 * The Pico iMage webcam has its class-specific interface descriptors
565 * after the endpoint descriptors.
566 */
567 if (buflen == 0) {
568 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
569 struct usb_host_endpoint *ep = &alts->endpoint[i];
570
571 if (ep->extralen == 0)
572 continue;
573
574 if (ep->extralen > 2 &&
575 ep->extra[1] == USB_DT_CS_INTERFACE) {
576 uvc_dbg(dev, DESCR,
577 "trying extra data from endpoint %u\n",
578 i);
579 buffer = alts->endpoint[i].extra;
580 buflen = alts->endpoint[i].extralen;
581 break;
582 }
583 }
584 }
585
586 /* Skip the standard interface descriptors. */
587 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
588 buflen -= buffer[0];
589 buffer += buffer[0];
590 }
591
592 if (buflen <= 2) {
593 uvc_dbg(dev, DESCR,
594 "no class-specific streaming interface descriptors found\n");
595 goto error;
596 }
597
598 /* Parse the header descriptor. */
599 switch (buffer[2]) {
600 case UVC_VS_OUTPUT_HEADER:
601 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
602 size = 9;
603 break;
604
605 case UVC_VS_INPUT_HEADER:
606 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
607 size = 13;
608 break;
609
610 default:
611 uvc_dbg(dev, DESCR,
612 "device %d videostreaming interface %d HEADER descriptor not found\n",
613 dev->udev->devnum, alts->desc.bInterfaceNumber);
614 goto error;
615 }
616
617 p = buflen >= 4 ? buffer[3] : 0;
618 n = buflen >= size ? buffer[size-1] : 0;
619
620 if (buflen < size + p*n) {
621 uvc_dbg(dev, DESCR,
622 "device %d videostreaming interface %d HEADER descriptor is invalid\n",
623 dev->udev->devnum, alts->desc.bInterfaceNumber);
624 goto error;
625 }
626
627 streaming->header.bNumFormats = p;
628 streaming->header.bEndpointAddress = buffer[6];
629 if (buffer[2] == UVC_VS_INPUT_HEADER) {
630 streaming->header.bmInfo = buffer[7];
631 streaming->header.bTerminalLink = buffer[8];
632 streaming->header.bStillCaptureMethod = buffer[9];
633 streaming->header.bTriggerSupport = buffer[10];
634 streaming->header.bTriggerUsage = buffer[11];
635 } else {
636 streaming->header.bTerminalLink = buffer[7];
637 }
638 streaming->header.bControlSize = n;
639
640 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
641 GFP_KERNEL);
642 if (streaming->header.bmaControls == NULL) {
643 ret = -ENOMEM;
644 goto error;
645 }
646
647 buflen -= buffer[0];
648 buffer += buffer[0];
649
650 _buffer = buffer;
651 _buflen = buflen;
652
653 /* Count the format and frame descriptors. */
654 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
655 switch (_buffer[2]) {
656 case UVC_VS_FORMAT_UNCOMPRESSED:
657 case UVC_VS_FORMAT_MJPEG:
658 case UVC_VS_FORMAT_FRAME_BASED:
659 nformats++;
660 break;
661
662 case UVC_VS_FORMAT_DV:
663 /*
664 * DV format has no frame descriptor. We will create a
665 * dummy frame descriptor with a dummy frame interval.
666 */
667 nformats++;
668 nframes++;
669 nintervals++;
670 break;
671
672 case UVC_VS_FORMAT_MPEG2TS:
673 case UVC_VS_FORMAT_STREAM_BASED:
674 uvc_dbg(dev, DESCR,
675 "device %d videostreaming interface %d FORMAT %u is not supported\n",
676 dev->udev->devnum,
677 alts->desc.bInterfaceNumber, _buffer[2]);
678 break;
679
680 case UVC_VS_FRAME_UNCOMPRESSED:
681 case UVC_VS_FRAME_MJPEG:
682 nframes++;
683 if (_buflen > 25)
684 nintervals += _buffer[25] ? _buffer[25] : 3;
685 break;
686
687 case UVC_VS_FRAME_FRAME_BASED:
688 nframes++;
689 if (_buflen > 21)
690 nintervals += _buffer[21] ? _buffer[21] : 3;
691 break;
692 }
693
694 _buflen -= _buffer[0];
695 _buffer += _buffer[0];
696 }
697
698 if (nformats == 0) {
699 uvc_dbg(dev, DESCR,
700 "device %d videostreaming interface %d has no supported formats defined\n",
701 dev->udev->devnum, alts->desc.bInterfaceNumber);
702 goto error;
703 }
704
705 /*
706 * Allocate memory for the formats, the frames and the intervals,
707 * plus any required padding to guarantee that everything has the
708 * correct alignment.
709 */
710 size = nformats * sizeof(*format);
711 size = ALIGN(size, __alignof__(*frame)) + nframes * sizeof(*frame);
712 size = ALIGN(size, __alignof__(*interval))
713 + nintervals * sizeof(*interval);
714
715 format = kzalloc(size, GFP_KERNEL);
716 if (!format) {
717 ret = -ENOMEM;
718 goto error;
719 }
720
721 frame = (void *)format + nformats * sizeof(*format);
722 frame = PTR_ALIGN(frame, __alignof__(*frame));
723 interval = (void *)frame + nframes * sizeof(*frame);
724 interval = PTR_ALIGN(interval, __alignof__(*interval));
725
726 streaming->formats = format;
727 streaming->nformats = 0;
728
729 /* Parse the format descriptors. */
730 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
731 switch (buffer[2]) {
732 case UVC_VS_FORMAT_UNCOMPRESSED:
733 case UVC_VS_FORMAT_MJPEG:
734 case UVC_VS_FORMAT_DV:
735 case UVC_VS_FORMAT_FRAME_BASED:
736 ret = uvc_parse_format(dev, streaming, format, frame,
737 &interval, buffer, buflen);
738 if (ret < 0)
739 goto error;
740 if (!ret)
741 break;
742
743 streaming->nformats++;
744 frame += format->nframes;
745 format++;
746
747 buflen -= ret;
748 buffer += ret;
749 continue;
750
751 default:
752 break;
753 }
754
755 buflen -= buffer[0];
756 buffer += buffer[0];
757 }
758
759 if (buflen)
760 uvc_dbg(dev, DESCR,
761 "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
762 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
763
764 /* Parse the alternate settings to find the maximum bandwidth. */
765 for (i = 0; i < intf->num_altsetting; ++i) {
766 struct usb_host_endpoint *ep;
767
768 alts = &intf->altsetting[i];
769 ep = uvc_find_endpoint(alts,
770 streaming->header.bEndpointAddress);
771 if (ep == NULL)
772 continue;
773 psize = uvc_endpoint_max_bpi(dev->udev, ep);
774 if (psize > streaming->maxpsize)
775 streaming->maxpsize = psize;
776 }
777
778 list_add_tail(&streaming->list, &dev->streams);
779 return 0;
780
781 error:
782 usb_driver_release_interface(&uvc_driver.driver, intf);
783 uvc_stream_delete(streaming);
784 return ret;
785 }
786
787 static const u8 uvc_camera_guid[16] = UVC_GUID_UVC_CAMERA;
788 static const u8 uvc_gpio_guid[16] = UVC_GUID_EXT_GPIO_CONTROLLER;
789 static const u8 uvc_media_transport_input_guid[16] =
790 UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT;
791 static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING;
792
uvc_alloc_entity(u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)793 static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id,
794 unsigned int num_pads, unsigned int extra_size)
795 {
796 struct uvc_entity *entity;
797 unsigned int num_inputs;
798 unsigned int size;
799 unsigned int i;
800
801 extra_size = roundup(extra_size, sizeof(*entity->pads));
802 if (num_pads)
803 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
804 else
805 num_inputs = 0;
806 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
807 + num_inputs;
808 entity = kzalloc(size, GFP_KERNEL);
809 if (entity == NULL)
810 return NULL;
811
812 entity->id = id;
813 entity->type = type;
814
815 /*
816 * Set the GUID for standard entity types. For extension units, the GUID
817 * is initialized by the caller.
818 */
819 switch (type) {
820 case UVC_EXT_GPIO_UNIT:
821 memcpy(entity->guid, uvc_gpio_guid, 16);
822 break;
823 case UVC_ITT_CAMERA:
824 memcpy(entity->guid, uvc_camera_guid, 16);
825 break;
826 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
827 memcpy(entity->guid, uvc_media_transport_input_guid, 16);
828 break;
829 case UVC_VC_PROCESSING_UNIT:
830 memcpy(entity->guid, uvc_processing_guid, 16);
831 break;
832 }
833
834 entity->num_links = 0;
835 entity->num_pads = num_pads;
836 entity->pads = ((void *)(entity + 1)) + extra_size;
837
838 for (i = 0; i < num_inputs; ++i)
839 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
840 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
841 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
842
843 entity->bNrInPins = num_inputs;
844 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
845
846 return entity;
847 }
848
uvc_entity_set_name(struct uvc_device * dev,struct uvc_entity * entity,const char * type_name,u8 string_id)849 static void uvc_entity_set_name(struct uvc_device *dev, struct uvc_entity *entity,
850 const char *type_name, u8 string_id)
851 {
852 int ret;
853
854 /*
855 * First attempt to read the entity name from the device. If the entity
856 * has no associated string, or if reading the string fails (most
857 * likely due to a buggy firmware), fall back to default names based on
858 * the entity type.
859 */
860 if (string_id) {
861 ret = usb_string(dev->udev, string_id, entity->name,
862 sizeof(entity->name));
863 if (!ret)
864 return;
865 }
866
867 sprintf(entity->name, "%s %u", type_name, entity->id);
868 }
869
870 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)871 static int uvc_parse_vendor_control(struct uvc_device *dev,
872 const unsigned char *buffer, int buflen)
873 {
874 struct usb_device *udev = dev->udev;
875 struct usb_host_interface *alts = dev->intf->cur_altsetting;
876 struct uvc_entity *unit;
877 unsigned int n, p;
878 int handled = 0;
879
880 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
881 case 0x046d: /* Logitech */
882 if (buffer[1] != 0x41 || buffer[2] != 0x01)
883 break;
884
885 /*
886 * Logitech implements several vendor specific functions
887 * through vendor specific extension units (LXU).
888 *
889 * The LXU descriptors are similar to XU descriptors
890 * (see "USB Device Video Class for Video Devices", section
891 * 3.7.2.6 "Extension Unit Descriptor") with the following
892 * differences:
893 *
894 * ----------------------------------------------------------
895 * 0 bLength 1 Number
896 * Size of this descriptor, in bytes: 24+p+n*2
897 * ----------------------------------------------------------
898 * 23+p+n bmControlsType N Bitmap
899 * Individual bits in the set are defined:
900 * 0: Absolute
901 * 1: Relative
902 *
903 * This bitset is mapped exactly the same as bmControls.
904 * ----------------------------------------------------------
905 * 23+p+n*2 bReserved 1 Boolean
906 * ----------------------------------------------------------
907 * 24+p+n*2 iExtension 1 Index
908 * Index of a string descriptor that describes this
909 * extension unit.
910 * ----------------------------------------------------------
911 */
912 p = buflen >= 22 ? buffer[21] : 0;
913 n = buflen >= 25 + p ? buffer[22+p] : 0;
914
915 if (buflen < 25 + p + 2*n) {
916 uvc_dbg(dev, DESCR,
917 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
918 udev->devnum, alts->desc.bInterfaceNumber);
919 break;
920 }
921
922 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
923 p + 1, 2*n);
924 if (unit == NULL)
925 return -ENOMEM;
926
927 memcpy(unit->guid, &buffer[4], 16);
928 unit->extension.bNumControls = buffer[20];
929 memcpy(unit->baSourceID, &buffer[22], p);
930 unit->extension.bControlSize = buffer[22+p];
931 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
932 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
933 + n;
934 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
935
936 uvc_entity_set_name(dev, unit, "Extension", buffer[24+p+2*n]);
937
938 list_add_tail(&unit->list, &dev->entities);
939 handled = 1;
940 break;
941 }
942
943 return handled;
944 }
945
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)946 static int uvc_parse_standard_control(struct uvc_device *dev,
947 const unsigned char *buffer, int buflen)
948 {
949 struct usb_device *udev = dev->udev;
950 struct uvc_entity *unit, *term;
951 struct usb_interface *intf;
952 struct usb_host_interface *alts = dev->intf->cur_altsetting;
953 unsigned int i, n, p, len;
954 const char *type_name;
955 u16 type;
956
957 switch (buffer[2]) {
958 case UVC_VC_HEADER:
959 n = buflen >= 12 ? buffer[11] : 0;
960
961 if (buflen < 12 + n) {
962 uvc_dbg(dev, DESCR,
963 "device %d videocontrol interface %d HEADER error\n",
964 udev->devnum, alts->desc.bInterfaceNumber);
965 return -EINVAL;
966 }
967
968 dev->uvc_version = get_unaligned_le16(&buffer[3]);
969 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
970
971 /* Parse all USB Video Streaming interfaces. */
972 for (i = 0; i < n; ++i) {
973 intf = usb_ifnum_to_if(udev, buffer[12+i]);
974 if (intf == NULL) {
975 uvc_dbg(dev, DESCR,
976 "device %d interface %d doesn't exists\n",
977 udev->devnum, i);
978 continue;
979 }
980
981 uvc_parse_streaming(dev, intf);
982 }
983 break;
984
985 case UVC_VC_INPUT_TERMINAL:
986 if (buflen < 8) {
987 uvc_dbg(dev, DESCR,
988 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
989 udev->devnum, alts->desc.bInterfaceNumber);
990 return -EINVAL;
991 }
992
993 /*
994 * Reject invalid terminal types that would cause issues:
995 *
996 * - The high byte must be non-zero, otherwise it would be
997 * confused with a unit.
998 *
999 * - Bit 15 must be 0, as we use it internally as a terminal
1000 * direction flag.
1001 *
1002 * Other unknown types are accepted.
1003 */
1004 type = get_unaligned_le16(&buffer[4]);
1005 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
1006 uvc_dbg(dev, DESCR,
1007 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1008 udev->devnum, alts->desc.bInterfaceNumber,
1009 buffer[3], type);
1010 return 0;
1011 }
1012
1013 n = 0;
1014 p = 0;
1015 len = 8;
1016
1017 if (type == UVC_ITT_CAMERA) {
1018 n = buflen >= 15 ? buffer[14] : 0;
1019 len = 15;
1020
1021 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1022 n = buflen >= 9 ? buffer[8] : 0;
1023 p = buflen >= 10 + n ? buffer[9+n] : 0;
1024 len = 10;
1025 }
1026
1027 if (buflen < len + n + p) {
1028 uvc_dbg(dev, DESCR,
1029 "device %d videocontrol interface %d INPUT_TERMINAL error\n",
1030 udev->devnum, alts->desc.bInterfaceNumber);
1031 return -EINVAL;
1032 }
1033
1034 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
1035 1, n + p);
1036 if (term == NULL)
1037 return -ENOMEM;
1038
1039 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1040 term->camera.bControlSize = n;
1041 term->camera.bmControls = (u8 *)term + sizeof(*term);
1042 term->camera.wObjectiveFocalLengthMin =
1043 get_unaligned_le16(&buffer[8]);
1044 term->camera.wObjectiveFocalLengthMax =
1045 get_unaligned_le16(&buffer[10]);
1046 term->camera.wOcularFocalLength =
1047 get_unaligned_le16(&buffer[12]);
1048 memcpy(term->camera.bmControls, &buffer[15], n);
1049 } else if (UVC_ENTITY_TYPE(term) ==
1050 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1051 term->media.bControlSize = n;
1052 term->media.bmControls = (u8 *)term + sizeof(*term);
1053 term->media.bTransportModeSize = p;
1054 term->media.bmTransportModes = (u8 *)term
1055 + sizeof(*term) + n;
1056 memcpy(term->media.bmControls, &buffer[9], n);
1057 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1058 }
1059
1060 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1061 type_name = "Camera";
1062 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1063 type_name = "Media";
1064 else
1065 type_name = "Input";
1066
1067 uvc_entity_set_name(dev, term, type_name, buffer[7]);
1068
1069 list_add_tail(&term->list, &dev->entities);
1070 break;
1071
1072 case UVC_VC_OUTPUT_TERMINAL:
1073 if (buflen < 9) {
1074 uvc_dbg(dev, DESCR,
1075 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
1076 udev->devnum, alts->desc.bInterfaceNumber);
1077 return -EINVAL;
1078 }
1079
1080 /*
1081 * Make sure the terminal type MSB is not null, otherwise it
1082 * could be confused with a unit.
1083 */
1084 type = get_unaligned_le16(&buffer[4]);
1085 if ((type & 0xff00) == 0) {
1086 uvc_dbg(dev, DESCR,
1087 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
1088 udev->devnum, alts->desc.bInterfaceNumber,
1089 buffer[3], type);
1090 return 0;
1091 }
1092
1093 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
1094 1, 0);
1095 if (term == NULL)
1096 return -ENOMEM;
1097
1098 memcpy(term->baSourceID, &buffer[7], 1);
1099
1100 uvc_entity_set_name(dev, term, "Output", buffer[8]);
1101
1102 list_add_tail(&term->list, &dev->entities);
1103 break;
1104
1105 case UVC_VC_SELECTOR_UNIT:
1106 p = buflen >= 5 ? buffer[4] : 0;
1107
1108 if (buflen < 5 || buflen < 6 + p) {
1109 uvc_dbg(dev, DESCR,
1110 "device %d videocontrol interface %d SELECTOR_UNIT error\n",
1111 udev->devnum, alts->desc.bInterfaceNumber);
1112 return -EINVAL;
1113 }
1114
1115 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
1116 if (unit == NULL)
1117 return -ENOMEM;
1118
1119 memcpy(unit->baSourceID, &buffer[5], p);
1120
1121 uvc_entity_set_name(dev, unit, "Selector", buffer[5+p]);
1122
1123 list_add_tail(&unit->list, &dev->entities);
1124 break;
1125
1126 case UVC_VC_PROCESSING_UNIT:
1127 n = buflen >= 8 ? buffer[7] : 0;
1128 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1129
1130 if (buflen < p + n) {
1131 uvc_dbg(dev, DESCR,
1132 "device %d videocontrol interface %d PROCESSING_UNIT error\n",
1133 udev->devnum, alts->desc.bInterfaceNumber);
1134 return -EINVAL;
1135 }
1136
1137 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
1138 if (unit == NULL)
1139 return -ENOMEM;
1140
1141 memcpy(unit->baSourceID, &buffer[4], 1);
1142 unit->processing.wMaxMultiplier =
1143 get_unaligned_le16(&buffer[5]);
1144 unit->processing.bControlSize = buffer[7];
1145 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1146 memcpy(unit->processing.bmControls, &buffer[8], n);
1147 if (dev->uvc_version >= 0x0110)
1148 unit->processing.bmVideoStandards = buffer[9+n];
1149
1150 uvc_entity_set_name(dev, unit, "Processing", buffer[8+n]);
1151
1152 list_add_tail(&unit->list, &dev->entities);
1153 break;
1154
1155 case UVC_VC_EXTENSION_UNIT:
1156 p = buflen >= 22 ? buffer[21] : 0;
1157 n = buflen >= 24 + p ? buffer[22+p] : 0;
1158
1159 if (buflen < 24 + p + n) {
1160 uvc_dbg(dev, DESCR,
1161 "device %d videocontrol interface %d EXTENSION_UNIT error\n",
1162 udev->devnum, alts->desc.bInterfaceNumber);
1163 return -EINVAL;
1164 }
1165
1166 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n);
1167 if (unit == NULL)
1168 return -ENOMEM;
1169
1170 memcpy(unit->guid, &buffer[4], 16);
1171 unit->extension.bNumControls = buffer[20];
1172 memcpy(unit->baSourceID, &buffer[22], p);
1173 unit->extension.bControlSize = buffer[22+p];
1174 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1175 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1176
1177 uvc_entity_set_name(dev, unit, "Extension", buffer[23+p+n]);
1178
1179 list_add_tail(&unit->list, &dev->entities);
1180 break;
1181
1182 default:
1183 uvc_dbg(dev, DESCR,
1184 "Found an unknown CS_INTERFACE descriptor (%u)\n",
1185 buffer[2]);
1186 break;
1187 }
1188
1189 return 0;
1190 }
1191
uvc_parse_control(struct uvc_device * dev)1192 static int uvc_parse_control(struct uvc_device *dev)
1193 {
1194 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1195 const unsigned char *buffer = alts->extra;
1196 int buflen = alts->extralen;
1197 int ret;
1198
1199 /*
1200 * Parse the default alternate setting only, as the UVC specification
1201 * defines a single alternate setting, the default alternate setting
1202 * zero.
1203 */
1204
1205 while (buflen > 2) {
1206 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1207 buffer[1] != USB_DT_CS_INTERFACE)
1208 goto next_descriptor;
1209
1210 ret = uvc_parse_standard_control(dev, buffer, buflen);
1211 if (ret < 0)
1212 return ret;
1213
1214 next_descriptor:
1215 buflen -= buffer[0];
1216 buffer += buffer[0];
1217 }
1218
1219 /*
1220 * Check if the optional status endpoint is present. Built-in iSight
1221 * webcams have an interrupt endpoint but spit proprietary data that
1222 * don't conform to the UVC status endpoint messages. Don't try to
1223 * handle the interrupt endpoint for those cameras.
1224 */
1225 if (alts->desc.bNumEndpoints == 1 &&
1226 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1227 struct usb_host_endpoint *ep = &alts->endpoint[0];
1228 struct usb_endpoint_descriptor *desc = &ep->desc;
1229
1230 if (usb_endpoint_is_int_in(desc) &&
1231 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1232 desc->bInterval != 0) {
1233 uvc_dbg(dev, DESCR,
1234 "Found a Status endpoint (addr %02x)\n",
1235 desc->bEndpointAddress);
1236 dev->int_ep = ep;
1237 }
1238 }
1239
1240 return 0;
1241 }
1242
1243 /* -----------------------------------------------------------------------------
1244 * Privacy GPIO
1245 */
1246
uvc_gpio_event(struct uvc_device * dev)1247 static void uvc_gpio_event(struct uvc_device *dev)
1248 {
1249 struct uvc_entity *unit = dev->gpio_unit;
1250 struct uvc_video_chain *chain;
1251 u8 new_val;
1252
1253 if (!unit)
1254 return;
1255
1256 new_val = gpiod_get_value_cansleep(unit->gpio.gpio_privacy);
1257
1258 /* GPIO entities are always on the first chain. */
1259 chain = list_first_entry(&dev->chains, struct uvc_video_chain, list);
1260 uvc_ctrl_status_event(chain, unit->controls, &new_val);
1261 }
1262
uvc_gpio_get_cur(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,void * data,u16 size)1263 static int uvc_gpio_get_cur(struct uvc_device *dev, struct uvc_entity *entity,
1264 u8 cs, void *data, u16 size)
1265 {
1266 if (cs != UVC_CT_PRIVACY_CONTROL || size < 1)
1267 return -EINVAL;
1268
1269 *(u8 *)data = gpiod_get_value_cansleep(entity->gpio.gpio_privacy);
1270
1271 return 0;
1272 }
1273
uvc_gpio_get_info(struct uvc_device * dev,struct uvc_entity * entity,u8 cs,u8 * caps)1274 static int uvc_gpio_get_info(struct uvc_device *dev, struct uvc_entity *entity,
1275 u8 cs, u8 *caps)
1276 {
1277 if (cs != UVC_CT_PRIVACY_CONTROL)
1278 return -EINVAL;
1279
1280 *caps = UVC_CONTROL_CAP_GET | UVC_CONTROL_CAP_AUTOUPDATE;
1281 return 0;
1282 }
1283
uvc_gpio_irq(int irq,void * data)1284 static irqreturn_t uvc_gpio_irq(int irq, void *data)
1285 {
1286 struct uvc_device *dev = data;
1287
1288 uvc_gpio_event(dev);
1289 return IRQ_HANDLED;
1290 }
1291
uvc_gpio_parse(struct uvc_device * dev)1292 static int uvc_gpio_parse(struct uvc_device *dev)
1293 {
1294 struct uvc_entity *unit;
1295 struct gpio_desc *gpio_privacy;
1296 int irq;
1297
1298 gpio_privacy = devm_gpiod_get_optional(&dev->intf->dev, "privacy",
1299 GPIOD_IN);
1300 if (IS_ERR_OR_NULL(gpio_privacy))
1301 return PTR_ERR_OR_ZERO(gpio_privacy);
1302
1303 irq = gpiod_to_irq(gpio_privacy);
1304 if (irq < 0)
1305 return dev_err_probe(&dev->intf->dev, irq,
1306 "No IRQ for privacy GPIO\n");
1307
1308 unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1);
1309 if (!unit)
1310 return -ENOMEM;
1311
1312 unit->gpio.gpio_privacy = gpio_privacy;
1313 unit->gpio.irq = irq;
1314 unit->gpio.bControlSize = 1;
1315 unit->gpio.bmControls = (u8 *)unit + sizeof(*unit);
1316 unit->gpio.bmControls[0] = 1;
1317 unit->get_cur = uvc_gpio_get_cur;
1318 unit->get_info = uvc_gpio_get_info;
1319 strscpy(unit->name, "GPIO", sizeof(unit->name));
1320
1321 list_add_tail(&unit->list, &dev->entities);
1322
1323 dev->gpio_unit = unit;
1324
1325 return 0;
1326 }
1327
uvc_gpio_init_irq(struct uvc_device * dev)1328 static int uvc_gpio_init_irq(struct uvc_device *dev)
1329 {
1330 struct uvc_entity *unit = dev->gpio_unit;
1331 int ret;
1332
1333 if (!unit || unit->gpio.irq < 0)
1334 return 0;
1335
1336 ret = request_threaded_irq(unit->gpio.irq, NULL, uvc_gpio_irq,
1337 IRQF_ONESHOT | IRQF_TRIGGER_FALLING |
1338 IRQF_TRIGGER_RISING,
1339 "uvc_privacy_gpio", dev);
1340
1341 unit->gpio.initialized = !ret;
1342
1343 return ret;
1344 }
1345
uvc_gpio_deinit(struct uvc_device * dev)1346 static void uvc_gpio_deinit(struct uvc_device *dev)
1347 {
1348 if (!dev->gpio_unit || !dev->gpio_unit->gpio.initialized)
1349 return;
1350
1351 free_irq(dev->gpio_unit->gpio.irq, dev);
1352 }
1353
1354 /* ------------------------------------------------------------------------
1355 * UVC device scan
1356 */
1357
1358 /*
1359 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1360 * and containing the following units:
1361 *
1362 * - one or more Output Terminals (USB Streaming or Display)
1363 * - zero or one Processing Unit
1364 * - zero, one or more single-input Selector Units
1365 * - zero or one multiple-input Selector Units, provided all inputs are
1366 * connected to input terminals
1367 * - zero, one or mode single-input Extension Units
1368 * - one or more Input Terminals (Camera, External or USB Streaming)
1369 *
1370 * The terminal and units must match on of the following structures:
1371 *
1372 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1373 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1374 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1375 *
1376 * +---------+ +---------+ -> OTT_*(0)
1377 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1378 * +---------+ +---------+ -> OTT_*(n)
1379 *
1380 * The Processing Unit and Extension Units can be in any order. Additional
1381 * Extension Units connected to the main chain as single-unit branches are
1382 * also supported. Single-input Selector Units are ignored.
1383 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1384 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1385 struct uvc_entity *entity)
1386 {
1387 switch (UVC_ENTITY_TYPE(entity)) {
1388 case UVC_VC_EXTENSION_UNIT:
1389 uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
1390
1391 if (entity->bNrInPins != 1) {
1392 uvc_dbg(chain->dev, DESCR,
1393 "Extension unit %d has more than 1 input pin\n",
1394 entity->id);
1395 return -1;
1396 }
1397
1398 break;
1399
1400 case UVC_VC_PROCESSING_UNIT:
1401 uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
1402
1403 if (chain->processing != NULL) {
1404 uvc_dbg(chain->dev, DESCR,
1405 "Found multiple Processing Units in chain\n");
1406 return -1;
1407 }
1408
1409 chain->processing = entity;
1410 break;
1411
1412 case UVC_VC_SELECTOR_UNIT:
1413 uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
1414
1415 /* Single-input selector units are ignored. */
1416 if (entity->bNrInPins == 1)
1417 break;
1418
1419 if (chain->selector != NULL) {
1420 uvc_dbg(chain->dev, DESCR,
1421 "Found multiple Selector Units in chain\n");
1422 return -1;
1423 }
1424
1425 chain->selector = entity;
1426 break;
1427
1428 case UVC_ITT_VENDOR_SPECIFIC:
1429 case UVC_ITT_CAMERA:
1430 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1431 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1432
1433 break;
1434
1435 case UVC_OTT_VENDOR_SPECIFIC:
1436 case UVC_OTT_DISPLAY:
1437 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1438 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1439
1440 break;
1441
1442 case UVC_TT_STREAMING:
1443 if (UVC_ENTITY_IS_ITERM(entity))
1444 uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
1445 else
1446 uvc_dbg_cont(PROBE, " OT %d", entity->id);
1447
1448 break;
1449
1450 default:
1451 uvc_dbg(chain->dev, DESCR,
1452 "Unsupported entity type 0x%04x found in chain\n",
1453 UVC_ENTITY_TYPE(entity));
1454 return -1;
1455 }
1456
1457 list_add_tail(&entity->chain, &chain->entities);
1458 return 0;
1459 }
1460
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1461 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1462 struct uvc_entity *entity, struct uvc_entity *prev)
1463 {
1464 struct uvc_entity *forward;
1465 int found;
1466
1467 /* Forward scan */
1468 forward = NULL;
1469 found = 0;
1470
1471 while (1) {
1472 forward = uvc_entity_by_reference(chain->dev, entity->id,
1473 forward);
1474 if (forward == NULL)
1475 break;
1476 if (forward == prev)
1477 continue;
1478 if (forward->chain.next || forward->chain.prev) {
1479 uvc_dbg(chain->dev, DESCR,
1480 "Found reference to entity %d already in chain\n",
1481 forward->id);
1482 return -EINVAL;
1483 }
1484
1485 switch (UVC_ENTITY_TYPE(forward)) {
1486 case UVC_VC_EXTENSION_UNIT:
1487 if (forward->bNrInPins != 1) {
1488 uvc_dbg(chain->dev, DESCR,
1489 "Extension unit %d has more than 1 input pin\n",
1490 forward->id);
1491 return -EINVAL;
1492 }
1493
1494 /*
1495 * Some devices reference an output terminal as the
1496 * source of extension units. This is incorrect, as
1497 * output terminals only have an input pin, and thus
1498 * can't be connected to any entity in the forward
1499 * direction. The resulting topology would cause issues
1500 * when registering the media controller graph. To
1501 * avoid this problem, connect the extension unit to
1502 * the source of the output terminal instead.
1503 */
1504 if (UVC_ENTITY_IS_OTERM(entity)) {
1505 struct uvc_entity *source;
1506
1507 source = uvc_entity_by_id(chain->dev,
1508 entity->baSourceID[0]);
1509 if (!source) {
1510 uvc_dbg(chain->dev, DESCR,
1511 "Can't connect extension unit %u in chain\n",
1512 forward->id);
1513 break;
1514 }
1515
1516 forward->baSourceID[0] = source->id;
1517 }
1518
1519 list_add_tail(&forward->chain, &chain->entities);
1520 if (!found)
1521 uvc_dbg_cont(PROBE, " (->");
1522
1523 uvc_dbg_cont(PROBE, " XU %d", forward->id);
1524 found = 1;
1525 break;
1526
1527 case UVC_OTT_VENDOR_SPECIFIC:
1528 case UVC_OTT_DISPLAY:
1529 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1530 case UVC_TT_STREAMING:
1531 if (UVC_ENTITY_IS_ITERM(forward)) {
1532 uvc_dbg(chain->dev, DESCR,
1533 "Unsupported input terminal %u\n",
1534 forward->id);
1535 return -EINVAL;
1536 }
1537
1538 if (UVC_ENTITY_IS_OTERM(entity)) {
1539 uvc_dbg(chain->dev, DESCR,
1540 "Unsupported connection between output terminals %u and %u\n",
1541 entity->id, forward->id);
1542 break;
1543 }
1544
1545 list_add_tail(&forward->chain, &chain->entities);
1546 if (!found)
1547 uvc_dbg_cont(PROBE, " (->");
1548
1549 uvc_dbg_cont(PROBE, " OT %d", forward->id);
1550 found = 1;
1551 break;
1552 }
1553 }
1554 if (found)
1555 uvc_dbg_cont(PROBE, ")");
1556
1557 return 0;
1558 }
1559
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1560 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1561 struct uvc_entity **_entity)
1562 {
1563 struct uvc_entity *entity = *_entity;
1564 struct uvc_entity *term;
1565 int id = -EINVAL, i;
1566
1567 switch (UVC_ENTITY_TYPE(entity)) {
1568 case UVC_VC_EXTENSION_UNIT:
1569 case UVC_VC_PROCESSING_UNIT:
1570 id = entity->baSourceID[0];
1571 break;
1572
1573 case UVC_VC_SELECTOR_UNIT:
1574 /* Single-input selector units are ignored. */
1575 if (entity->bNrInPins == 1) {
1576 id = entity->baSourceID[0];
1577 break;
1578 }
1579
1580 uvc_dbg_cont(PROBE, " <- IT");
1581
1582 chain->selector = entity;
1583 for (i = 0; i < entity->bNrInPins; ++i) {
1584 id = entity->baSourceID[i];
1585 term = uvc_entity_by_id(chain->dev, id);
1586 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1587 uvc_dbg(chain->dev, DESCR,
1588 "Selector unit %d input %d isn't connected to an input terminal\n",
1589 entity->id, i);
1590 return -1;
1591 }
1592
1593 if (term->chain.next || term->chain.prev) {
1594 uvc_dbg(chain->dev, DESCR,
1595 "Found reference to entity %d already in chain\n",
1596 term->id);
1597 return -EINVAL;
1598 }
1599
1600 uvc_dbg_cont(PROBE, " %d", term->id);
1601
1602 list_add_tail(&term->chain, &chain->entities);
1603 uvc_scan_chain_forward(chain, term, entity);
1604 }
1605
1606 uvc_dbg_cont(PROBE, "\n");
1607
1608 id = 0;
1609 break;
1610
1611 case UVC_ITT_VENDOR_SPECIFIC:
1612 case UVC_ITT_CAMERA:
1613 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1614 case UVC_OTT_VENDOR_SPECIFIC:
1615 case UVC_OTT_DISPLAY:
1616 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1617 case UVC_TT_STREAMING:
1618 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1619 break;
1620 }
1621
1622 if (id <= 0) {
1623 *_entity = NULL;
1624 return id;
1625 }
1626
1627 entity = uvc_entity_by_id(chain->dev, id);
1628 if (entity == NULL) {
1629 uvc_dbg(chain->dev, DESCR,
1630 "Found reference to unknown entity %d\n", id);
1631 return -EINVAL;
1632 }
1633
1634 *_entity = entity;
1635 return 0;
1636 }
1637
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1638 static int uvc_scan_chain(struct uvc_video_chain *chain,
1639 struct uvc_entity *term)
1640 {
1641 struct uvc_entity *entity, *prev;
1642
1643 uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
1644
1645 entity = term;
1646 prev = NULL;
1647
1648 while (entity != NULL) {
1649 /* Entity must not be part of an existing chain */
1650 if (entity->chain.next || entity->chain.prev) {
1651 uvc_dbg(chain->dev, DESCR,
1652 "Found reference to entity %d already in chain\n",
1653 entity->id);
1654 return -EINVAL;
1655 }
1656
1657 /* Process entity */
1658 if (uvc_scan_chain_entity(chain, entity) < 0)
1659 return -EINVAL;
1660
1661 /* Forward scan */
1662 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1663 return -EINVAL;
1664
1665 /* Backward scan */
1666 prev = entity;
1667 if (uvc_scan_chain_backward(chain, &entity) < 0)
1668 return -EINVAL;
1669 }
1670
1671 return 0;
1672 }
1673
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1674 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1675 char *buffer)
1676 {
1677 struct uvc_entity *term;
1678 unsigned int nterms = 0;
1679 char *p = buffer;
1680
1681 list_for_each_entry(term, terms, chain) {
1682 if (!UVC_ENTITY_IS_TERM(term) ||
1683 UVC_TERM_DIRECTION(term) != dir)
1684 continue;
1685
1686 if (nterms)
1687 p += sprintf(p, ",");
1688 if (++nterms >= 4) {
1689 p += sprintf(p, "...");
1690 break;
1691 }
1692 p += sprintf(p, "%u", term->id);
1693 }
1694
1695 return p - buffer;
1696 }
1697
uvc_print_chain(struct uvc_video_chain * chain)1698 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1699 {
1700 static char buffer[43];
1701 char *p = buffer;
1702
1703 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1704 p += sprintf(p, " -> ");
1705 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1706
1707 return buffer;
1708 }
1709
uvc_alloc_chain(struct uvc_device * dev)1710 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1711 {
1712 struct uvc_video_chain *chain;
1713
1714 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1715 if (chain == NULL)
1716 return NULL;
1717
1718 INIT_LIST_HEAD(&chain->entities);
1719 mutex_init(&chain->ctrl_mutex);
1720 chain->dev = dev;
1721 v4l2_prio_init(&chain->prio);
1722
1723 return chain;
1724 }
1725
1726 /*
1727 * Fallback heuristic for devices that don't connect units and terminals in a
1728 * valid chain.
1729 *
1730 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1731 * to fail, but if we just take the entities we can find and put them together
1732 * in the most sensible chain we can think of, turns out they do work anyway.
1733 * Note: This heuristic assumes there is a single chain.
1734 *
1735 * At the time of writing, devices known to have such a broken chain are
1736 * - Acer Integrated Camera (5986:055a)
1737 * - Realtek rtl157a7 (0bda:57a7)
1738 */
uvc_scan_fallback(struct uvc_device * dev)1739 static int uvc_scan_fallback(struct uvc_device *dev)
1740 {
1741 struct uvc_video_chain *chain;
1742 struct uvc_entity *iterm = NULL;
1743 struct uvc_entity *oterm = NULL;
1744 struct uvc_entity *entity;
1745 struct uvc_entity *prev;
1746
1747 /*
1748 * Start by locating the input and output terminals. We only support
1749 * devices with exactly one of each for now.
1750 */
1751 list_for_each_entry(entity, &dev->entities, list) {
1752 if (UVC_ENTITY_IS_ITERM(entity)) {
1753 if (iterm)
1754 return -EINVAL;
1755 iterm = entity;
1756 }
1757
1758 if (UVC_ENTITY_IS_OTERM(entity)) {
1759 if (oterm)
1760 return -EINVAL;
1761 oterm = entity;
1762 }
1763 }
1764
1765 if (iterm == NULL || oterm == NULL)
1766 return -EINVAL;
1767
1768 /* Allocate the chain and fill it. */
1769 chain = uvc_alloc_chain(dev);
1770 if (chain == NULL)
1771 return -ENOMEM;
1772
1773 if (uvc_scan_chain_entity(chain, oterm) < 0)
1774 goto error;
1775
1776 prev = oterm;
1777
1778 /*
1779 * Add all Processing and Extension Units with two pads. The order
1780 * doesn't matter much, use reverse list traversal to connect units in
1781 * UVC descriptor order as we build the chain from output to input. This
1782 * leads to units appearing in the order meant by the manufacturer for
1783 * the cameras known to require this heuristic.
1784 */
1785 list_for_each_entry_reverse(entity, &dev->entities, list) {
1786 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1787 entity->type != UVC_VC_EXTENSION_UNIT)
1788 continue;
1789
1790 if (entity->num_pads != 2)
1791 continue;
1792
1793 if (uvc_scan_chain_entity(chain, entity) < 0)
1794 goto error;
1795
1796 prev->baSourceID[0] = entity->id;
1797 prev = entity;
1798 }
1799
1800 if (uvc_scan_chain_entity(chain, iterm) < 0)
1801 goto error;
1802
1803 prev->baSourceID[0] = iterm->id;
1804
1805 list_add_tail(&chain->list, &dev->chains);
1806
1807 uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
1808 uvc_print_chain(chain));
1809
1810 return 0;
1811
1812 error:
1813 kfree(chain);
1814 return -EINVAL;
1815 }
1816
1817 /*
1818 * Scan the device for video chains and register video devices.
1819 *
1820 * Chains are scanned starting at their output terminals and walked backwards.
1821 */
uvc_scan_device(struct uvc_device * dev)1822 static int uvc_scan_device(struct uvc_device *dev)
1823 {
1824 struct uvc_video_chain *chain;
1825 struct uvc_entity *term;
1826
1827 list_for_each_entry(term, &dev->entities, list) {
1828 if (!UVC_ENTITY_IS_OTERM(term))
1829 continue;
1830
1831 /*
1832 * If the terminal is already included in a chain, skip it.
1833 * This can happen for chains that have multiple output
1834 * terminals, where all output terminals beside the first one
1835 * will be inserted in the chain in forward scans.
1836 */
1837 if (term->chain.next || term->chain.prev)
1838 continue;
1839
1840 chain = uvc_alloc_chain(dev);
1841 if (chain == NULL)
1842 return -ENOMEM;
1843
1844 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1845
1846 if (uvc_scan_chain(chain, term) < 0) {
1847 kfree(chain);
1848 continue;
1849 }
1850
1851 uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
1852 uvc_print_chain(chain));
1853
1854 list_add_tail(&chain->list, &dev->chains);
1855 }
1856
1857 if (list_empty(&dev->chains))
1858 uvc_scan_fallback(dev);
1859
1860 if (list_empty(&dev->chains)) {
1861 dev_info(&dev->udev->dev, "No valid video chain found.\n");
1862 return -1;
1863 }
1864
1865 /* Add GPIO entity to the first chain. */
1866 if (dev->gpio_unit) {
1867 chain = list_first_entry(&dev->chains,
1868 struct uvc_video_chain, list);
1869 list_add_tail(&dev->gpio_unit->chain, &chain->entities);
1870 }
1871
1872 return 0;
1873 }
1874
1875 /* ------------------------------------------------------------------------
1876 * Video device registration and unregistration
1877 */
1878
1879 /*
1880 * Delete the UVC device.
1881 *
1882 * Called by the kernel when the last reference to the uvc_device structure
1883 * is released.
1884 *
1885 * As this function is called after or during disconnect(), all URBs have
1886 * already been cancelled by the USB core. There is no need to kill the
1887 * interrupt URB manually.
1888 */
uvc_delete(struct kref * kref)1889 static void uvc_delete(struct kref *kref)
1890 {
1891 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1892 struct list_head *p, *n;
1893
1894 uvc_status_cleanup(dev);
1895 uvc_ctrl_cleanup_device(dev);
1896
1897 usb_put_intf(dev->intf);
1898 usb_put_dev(dev->udev);
1899
1900 #ifdef CONFIG_MEDIA_CONTROLLER
1901 media_device_cleanup(&dev->mdev);
1902 #endif
1903
1904 list_for_each_safe(p, n, &dev->chains) {
1905 struct uvc_video_chain *chain;
1906
1907 chain = list_entry(p, struct uvc_video_chain, list);
1908 kfree(chain);
1909 }
1910
1911 list_for_each_safe(p, n, &dev->entities) {
1912 struct uvc_entity *entity;
1913
1914 entity = list_entry(p, struct uvc_entity, list);
1915 #ifdef CONFIG_MEDIA_CONTROLLER
1916 uvc_mc_cleanup_entity(entity);
1917 #endif
1918 kfree(entity);
1919 }
1920
1921 list_for_each_safe(p, n, &dev->streams) {
1922 struct uvc_streaming *streaming;
1923
1924 streaming = list_entry(p, struct uvc_streaming, list);
1925 usb_driver_release_interface(&uvc_driver.driver,
1926 streaming->intf);
1927 uvc_stream_delete(streaming);
1928 }
1929
1930 kfree(dev);
1931 }
1932
uvc_release(struct video_device * vdev)1933 static void uvc_release(struct video_device *vdev)
1934 {
1935 struct uvc_streaming *stream = video_get_drvdata(vdev);
1936 struct uvc_device *dev = stream->dev;
1937
1938 kref_put(&dev->ref, uvc_delete);
1939 }
1940
1941 /*
1942 * Unregister the video devices.
1943 */
uvc_unregister_video(struct uvc_device * dev)1944 static void uvc_unregister_video(struct uvc_device *dev)
1945 {
1946 struct uvc_streaming *stream;
1947
1948 uvc_gpio_deinit(dev);
1949
1950 list_for_each_entry(stream, &dev->streams, list) {
1951 /* Nothing to do here, continue. */
1952 if (!video_is_registered(&stream->vdev))
1953 continue;
1954
1955 /*
1956 * For stream->vdev we follow the same logic as:
1957 * vb2_video_unregister_device().
1958 */
1959
1960 /* 1. Take a reference to vdev */
1961 get_device(&stream->vdev.dev);
1962
1963 /* 2. Ensure that no new ioctls can be called. */
1964 video_unregister_device(&stream->vdev);
1965
1966 /* 3. Wait for old ioctls to finish. */
1967 mutex_lock(&stream->mutex);
1968
1969 /* 4. Stop streaming. */
1970 uvc_queue_release(&stream->queue);
1971
1972 mutex_unlock(&stream->mutex);
1973
1974 put_device(&stream->vdev.dev);
1975
1976 /*
1977 * For stream->meta.vdev we can directly call:
1978 * vb2_video_unregister_device().
1979 */
1980 vb2_video_unregister_device(&stream->meta.vdev);
1981
1982 /*
1983 * Now both vdevs are not streaming and all the ioctls will
1984 * return -ENODEV.
1985 */
1986
1987 uvc_debugfs_cleanup_stream(stream);
1988 }
1989
1990 uvc_status_unregister(dev);
1991
1992 if (dev->vdev.dev)
1993 v4l2_device_unregister(&dev->vdev);
1994 #ifdef CONFIG_MEDIA_CONTROLLER
1995 if (media_devnode_is_registered(dev->mdev.devnode))
1996 media_device_unregister(&dev->mdev);
1997 #endif
1998 }
1999
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)2000 int uvc_register_video_device(struct uvc_device *dev,
2001 struct uvc_streaming *stream,
2002 struct video_device *vdev,
2003 struct uvc_video_queue *queue,
2004 enum v4l2_buf_type type,
2005 const struct v4l2_file_operations *fops,
2006 const struct v4l2_ioctl_ops *ioctl_ops)
2007 {
2008 int ret;
2009
2010 /* Initialize the video buffers queue. */
2011 ret = uvc_queue_init(queue, type);
2012 if (ret)
2013 return ret;
2014
2015 /* Register the device with V4L. */
2016
2017 /*
2018 * We already hold a reference to dev->udev. The video device will be
2019 * unregistered before the reference is released, so we don't need to
2020 * get another one.
2021 */
2022 vdev->v4l2_dev = &dev->vdev;
2023 vdev->fops = fops;
2024 vdev->ioctl_ops = ioctl_ops;
2025 vdev->release = uvc_release;
2026 vdev->prio = &stream->chain->prio;
2027 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2028 vdev->vfl_dir = VFL_DIR_TX;
2029 else
2030 vdev->vfl_dir = VFL_DIR_RX;
2031
2032 switch (type) {
2033 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2034 default:
2035 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
2036 break;
2037 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2038 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
2039 break;
2040 case V4L2_BUF_TYPE_META_CAPTURE:
2041 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
2042 break;
2043 }
2044
2045 strscpy(vdev->name, dev->name, sizeof(vdev->name));
2046
2047 /*
2048 * Set the driver data before calling video_register_device, otherwise
2049 * the file open() handler might race us.
2050 */
2051 video_set_drvdata(vdev, stream);
2052
2053 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
2054 if (ret < 0) {
2055 dev_err(&stream->intf->dev,
2056 "Failed to register %s device (%d).\n",
2057 v4l2_type_names[type], ret);
2058 return ret;
2059 }
2060
2061 kref_get(&dev->ref);
2062 return 0;
2063 }
2064
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)2065 static int uvc_register_video(struct uvc_device *dev,
2066 struct uvc_streaming *stream)
2067 {
2068 int ret;
2069
2070 /* Initialize the streaming interface with default parameters. */
2071 ret = uvc_video_init(stream);
2072 if (ret < 0) {
2073 dev_err(&stream->intf->dev,
2074 "Failed to initialize the device (%d).\n", ret);
2075 return ret;
2076 }
2077
2078 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2079 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2080 | V4L2_CAP_META_CAPTURE;
2081 else
2082 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2083
2084 uvc_debugfs_init_stream(stream);
2085
2086 /* Register the device with V4L. */
2087 return uvc_register_video_device(dev, stream, &stream->vdev,
2088 &stream->queue, stream->type,
2089 &uvc_fops, &uvc_ioctl_ops);
2090 }
2091
2092 /*
2093 * Register all video devices in all chains.
2094 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2095 static int uvc_register_terms(struct uvc_device *dev,
2096 struct uvc_video_chain *chain)
2097 {
2098 struct uvc_streaming *stream;
2099 struct uvc_entity *term;
2100 int ret;
2101
2102 list_for_each_entry(term, &chain->entities, chain) {
2103 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2104 continue;
2105
2106 stream = uvc_stream_by_id(dev, term->id);
2107 if (stream == NULL) {
2108 dev_info(&dev->udev->dev,
2109 "No streaming interface found for terminal %u.",
2110 term->id);
2111 continue;
2112 }
2113
2114 stream->chain = chain;
2115 ret = uvc_register_video(dev, stream);
2116 if (ret < 0)
2117 return ret;
2118
2119 /*
2120 * Register a metadata node, but ignore a possible failure,
2121 * complete registration of video nodes anyway.
2122 */
2123 uvc_meta_register(stream);
2124
2125 term->vdev = &stream->vdev;
2126 }
2127
2128 return 0;
2129 }
2130
uvc_register_chains(struct uvc_device * dev)2131 static int uvc_register_chains(struct uvc_device *dev)
2132 {
2133 struct uvc_video_chain *chain;
2134 int ret;
2135
2136 list_for_each_entry(chain, &dev->chains, list) {
2137 ret = uvc_register_terms(dev, chain);
2138 if (ret < 0)
2139 return ret;
2140
2141 #ifdef CONFIG_MEDIA_CONTROLLER
2142 ret = uvc_mc_register_entities(chain);
2143 if (ret < 0)
2144 dev_info(&dev->udev->dev,
2145 "Failed to register entities (%d).\n", ret);
2146 #endif
2147 }
2148
2149 return 0;
2150 }
2151
2152 /* ------------------------------------------------------------------------
2153 * USB probe, disconnect, suspend and resume
2154 */
2155
2156 static const struct uvc_device_info uvc_quirk_none = { 0 };
2157
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2158 static int uvc_probe(struct usb_interface *intf,
2159 const struct usb_device_id *id)
2160 {
2161 struct usb_device *udev = interface_to_usbdev(intf);
2162 struct uvc_device *dev;
2163 const struct uvc_device_info *info =
2164 (const struct uvc_device_info *)id->driver_info;
2165 int function;
2166 int ret;
2167
2168 /* Allocate memory for the device and initialize it. */
2169 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2170 if (dev == NULL)
2171 return -ENOMEM;
2172
2173 INIT_LIST_HEAD(&dev->entities);
2174 INIT_LIST_HEAD(&dev->chains);
2175 INIT_LIST_HEAD(&dev->streams);
2176 kref_init(&dev->ref);
2177 atomic_set(&dev->nmappings, 0);
2178
2179 dev->udev = usb_get_dev(udev);
2180 dev->intf = usb_get_intf(intf);
2181 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2182 dev->info = info ? info : &uvc_quirk_none;
2183 dev->quirks = uvc_quirks_param == -1
2184 ? dev->info->quirks : uvc_quirks_param;
2185
2186 if (id->idVendor && id->idProduct)
2187 uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
2188 udev->devpath, id->idVendor, id->idProduct);
2189 else
2190 uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
2191 udev->devpath);
2192
2193 if (udev->product != NULL)
2194 strscpy(dev->name, udev->product, sizeof(dev->name));
2195 else
2196 snprintf(dev->name, sizeof(dev->name),
2197 "UVC Camera (%04x:%04x)",
2198 le16_to_cpu(udev->descriptor.idVendor),
2199 le16_to_cpu(udev->descriptor.idProduct));
2200
2201 /*
2202 * Add iFunction or iInterface to names when available as additional
2203 * distinguishers between interfaces. iFunction is prioritized over
2204 * iInterface which matches Windows behavior at the point of writing.
2205 */
2206 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2207 function = intf->intf_assoc->iFunction;
2208 else
2209 function = intf->cur_altsetting->desc.iInterface;
2210 if (function != 0) {
2211 size_t len;
2212
2213 strlcat(dev->name, ": ", sizeof(dev->name));
2214 len = strlen(dev->name);
2215 usb_string(udev, function, dev->name + len,
2216 sizeof(dev->name) - len);
2217 }
2218
2219 /* Initialize the media device. */
2220 #ifdef CONFIG_MEDIA_CONTROLLER
2221 dev->mdev.dev = &intf->dev;
2222 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2223 if (udev->serial)
2224 strscpy(dev->mdev.serial, udev->serial,
2225 sizeof(dev->mdev.serial));
2226 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2227 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2228 media_device_init(&dev->mdev);
2229
2230 dev->vdev.mdev = &dev->mdev;
2231 #endif
2232
2233 /* Parse the Video Class control descriptor. */
2234 if (uvc_parse_control(dev) < 0) {
2235 uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
2236 goto error;
2237 }
2238
2239 /* Parse the associated GPIOs. */
2240 if (uvc_gpio_parse(dev) < 0) {
2241 uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
2242 goto error;
2243 }
2244
2245 dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2246 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2247 udev->product ? udev->product : "<unnamed>",
2248 le16_to_cpu(udev->descriptor.idVendor),
2249 le16_to_cpu(udev->descriptor.idProduct));
2250
2251 if (dev->quirks != dev->info->quirks) {
2252 dev_info(&dev->udev->dev,
2253 "Forcing device quirks to 0x%x by module parameter for testing purpose.\n",
2254 dev->quirks);
2255 dev_info(&dev->udev->dev,
2256 "Please report required quirks to the linux-media mailing list.\n");
2257 }
2258
2259 if (dev->info->uvc_version) {
2260 dev->uvc_version = dev->info->uvc_version;
2261 dev_info(&dev->udev->dev, "Forcing UVC version to %u.%02x\n",
2262 dev->uvc_version >> 8, dev->uvc_version & 0xff);
2263 }
2264
2265 /* Register the V4L2 device. */
2266 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2267 goto error;
2268
2269 /* Scan the device for video chains. */
2270 if (uvc_scan_device(dev) < 0)
2271 goto error;
2272
2273 /* Initialize controls. */
2274 if (uvc_ctrl_init_device(dev) < 0)
2275 goto error;
2276
2277 /* Register video device nodes. */
2278 if (uvc_register_chains(dev) < 0)
2279 goto error;
2280
2281 #ifdef CONFIG_MEDIA_CONTROLLER
2282 /* Register the media device node */
2283 if (media_device_register(&dev->mdev) < 0)
2284 goto error;
2285 #endif
2286 /* Save our data pointer in the interface data. */
2287 usb_set_intfdata(intf, dev);
2288
2289 /* Initialize the interrupt URB. */
2290 ret = uvc_status_init(dev);
2291 if (ret < 0) {
2292 dev_info(&dev->udev->dev,
2293 "Unable to initialize the status endpoint (%d), status interrupt will not be supported.\n",
2294 ret);
2295 }
2296
2297 ret = uvc_gpio_init_irq(dev);
2298 if (ret < 0) {
2299 dev_err(&dev->udev->dev,
2300 "Unable to request privacy GPIO IRQ (%d)\n", ret);
2301 goto error;
2302 }
2303
2304 if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME)
2305 udev->quirks &= ~USB_QUIRK_RESET_RESUME;
2306
2307 if (!(dev->quirks & UVC_QUIRK_DISABLE_AUTOSUSPEND))
2308 usb_enable_autosuspend(udev);
2309
2310 uvc_dbg(dev, PROBE, "UVC device initialized\n");
2311
2312 return 0;
2313
2314 error:
2315 uvc_unregister_video(dev);
2316 kref_put(&dev->ref, uvc_delete);
2317 return -ENODEV;
2318 }
2319
uvc_disconnect(struct usb_interface * intf)2320 static void uvc_disconnect(struct usb_interface *intf)
2321 {
2322 struct uvc_device *dev = usb_get_intfdata(intf);
2323
2324 /*
2325 * Set the USB interface data to NULL. This can be done outside the
2326 * lock, as there's no other reader.
2327 */
2328 usb_set_intfdata(intf, NULL);
2329
2330 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2331 UVC_SC_VIDEOSTREAMING)
2332 return;
2333
2334 uvc_unregister_video(dev);
2335 kref_put(&dev->ref, uvc_delete);
2336 }
2337
uvc_suspend(struct usb_interface * intf,pm_message_t message)2338 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2339 {
2340 struct uvc_device *dev = usb_get_intfdata(intf);
2341 struct uvc_streaming *stream;
2342
2343 uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
2344 intf->cur_altsetting->desc.bInterfaceNumber);
2345
2346 /* Controls are cached on the fly so they don't need to be saved. */
2347 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2348 UVC_SC_VIDEOCONTROL) {
2349 uvc_status_suspend(dev);
2350 return 0;
2351 }
2352
2353 list_for_each_entry(stream, &dev->streams, list) {
2354 if (stream->intf == intf)
2355 return uvc_video_suspend(stream);
2356 }
2357
2358 uvc_dbg(dev, SUSPEND,
2359 "Suspend: video streaming USB interface mismatch\n");
2360 return -EINVAL;
2361 }
2362
__uvc_resume(struct usb_interface * intf,int reset)2363 static int __uvc_resume(struct usb_interface *intf, int reset)
2364 {
2365 struct uvc_device *dev = usb_get_intfdata(intf);
2366 struct uvc_streaming *stream;
2367 int ret = 0;
2368
2369 uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
2370 intf->cur_altsetting->desc.bInterfaceNumber);
2371
2372 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2373 UVC_SC_VIDEOCONTROL) {
2374 if (reset) {
2375 ret = uvc_ctrl_restore_values(dev);
2376 if (ret < 0)
2377 return ret;
2378 }
2379
2380 return uvc_status_resume(dev);
2381 }
2382
2383 list_for_each_entry(stream, &dev->streams, list) {
2384 if (stream->intf == intf) {
2385 ret = uvc_video_resume(stream, reset);
2386 if (ret < 0)
2387 uvc_queue_streamoff(&stream->queue,
2388 stream->queue.queue.type);
2389 return ret;
2390 }
2391 }
2392
2393 uvc_dbg(dev, SUSPEND,
2394 "Resume: video streaming USB interface mismatch\n");
2395 return -EINVAL;
2396 }
2397
uvc_resume(struct usb_interface * intf)2398 static int uvc_resume(struct usb_interface *intf)
2399 {
2400 return __uvc_resume(intf, 0);
2401 }
2402
uvc_reset_resume(struct usb_interface * intf)2403 static int uvc_reset_resume(struct usb_interface *intf)
2404 {
2405 return __uvc_resume(intf, 1);
2406 }
2407
2408 /* ------------------------------------------------------------------------
2409 * Module parameters
2410 */
2411
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2412 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2413 {
2414 if (uvc_clock_param == CLOCK_MONOTONIC)
2415 return sprintf(buffer, "CLOCK_MONOTONIC");
2416 else
2417 return sprintf(buffer, "CLOCK_REALTIME");
2418 }
2419
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2420 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2421 {
2422 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2423 val += strlen("clock_");
2424
2425 if (strcasecmp(val, "monotonic") == 0)
2426 uvc_clock_param = CLOCK_MONOTONIC;
2427 else if (strcasecmp(val, "realtime") == 0)
2428 uvc_clock_param = CLOCK_REALTIME;
2429 else
2430 return -EINVAL;
2431
2432 return 0;
2433 }
2434
2435 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2436 &uvc_clock_param, 0644);
2437 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2438 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, 0644);
2439 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2440
param_set_nodrop(const char * val,const struct kernel_param * kp)2441 static int param_set_nodrop(const char *val, const struct kernel_param *kp)
2442 {
2443 pr_warn_once("uvcvideo: "
2444 DEPRECATED
2445 "nodrop parameter will be eventually removed.\n");
2446 return param_set_bool(val, kp);
2447 }
2448
2449 static const struct kernel_param_ops param_ops_nodrop = {
2450 .set = param_set_nodrop,
2451 .get = param_get_uint,
2452 };
2453
2454 param_check_uint(nodrop, &uvc_no_drop_param);
2455 module_param_cb(nodrop, ¶m_ops_nodrop, &uvc_no_drop_param, 0644);
2456 __MODULE_PARM_TYPE(nodrop, "uint");
2457 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2458
2459 module_param_named(quirks, uvc_quirks_param, uint, 0644);
2460 MODULE_PARM_DESC(quirks, "Forced device quirks");
2461 module_param_named(trace, uvc_dbg_param, uint, 0644);
2462 MODULE_PARM_DESC(trace, "Trace level bitmask");
2463 module_param_named(timeout, uvc_timeout_param, uint, 0644);
2464 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2465
2466 /* ------------------------------------------------------------------------
2467 * Driver initialization and cleanup
2468 */
2469
2470 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2471 .quirks = UVC_QUIRK_PROBE_MINMAX,
2472 };
2473
2474 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2475 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2476 };
2477
2478 static const struct uvc_device_info uvc_quirk_probe_def = {
2479 .quirks = UVC_QUIRK_PROBE_DEF,
2480 };
2481
2482 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2483 .quirks = UVC_QUIRK_STREAM_NO_FID,
2484 };
2485
2486 static const struct uvc_device_info uvc_quirk_force_y8 = {
2487 .quirks = UVC_QUIRK_FORCE_Y8,
2488 };
2489
2490 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2491 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2492 {.meta_format = m}
2493
2494 /*
2495 * The Logitech cameras listed below have their interface class set to
2496 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2497 * though they are compliant.
2498 *
2499 * Sort these by vendor/product ID.
2500 */
2501 static const struct usb_device_id uvc_ids[] = {
2502 /* Quanta ACER HD User Facing */
2503 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2504 | USB_DEVICE_ID_MATCH_INT_INFO,
2505 .idVendor = 0x0408,
2506 .idProduct = 0x4033,
2507 .bInterfaceClass = USB_CLASS_VIDEO,
2508 .bInterfaceSubClass = 1,
2509 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2510 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2511 .uvc_version = 0x010a,
2512 } },
2513 /* Quanta ACER HD User Facing */
2514 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2515 | USB_DEVICE_ID_MATCH_INT_INFO,
2516 .idVendor = 0x0408,
2517 .idProduct = 0x4035,
2518 .bInterfaceClass = USB_CLASS_VIDEO,
2519 .bInterfaceSubClass = 1,
2520 .bInterfaceProtocol = UVC_PC_PROTOCOL_15,
2521 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
2522 .uvc_version = 0x010a,
2523 } },
2524 /* LogiLink Wireless Webcam */
2525 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2526 | USB_DEVICE_ID_MATCH_INT_INFO,
2527 .idVendor = 0x0416,
2528 .idProduct = 0xa91a,
2529 .bInterfaceClass = USB_CLASS_VIDEO,
2530 .bInterfaceSubClass = 1,
2531 .bInterfaceProtocol = 0,
2532 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2533 /* Genius eFace 2025 */
2534 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2535 | USB_DEVICE_ID_MATCH_INT_INFO,
2536 .idVendor = 0x0458,
2537 .idProduct = 0x706e,
2538 .bInterfaceClass = USB_CLASS_VIDEO,
2539 .bInterfaceSubClass = 1,
2540 .bInterfaceProtocol = 0,
2541 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2542 /* Microsoft Lifecam NX-6000 */
2543 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2544 | USB_DEVICE_ID_MATCH_INT_INFO,
2545 .idVendor = 0x045e,
2546 .idProduct = 0x00f8,
2547 .bInterfaceClass = USB_CLASS_VIDEO,
2548 .bInterfaceSubClass = 1,
2549 .bInterfaceProtocol = 0,
2550 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2551 /* Microsoft Lifecam NX-3000 */
2552 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2553 | USB_DEVICE_ID_MATCH_INT_INFO,
2554 .idVendor = 0x045e,
2555 .idProduct = 0x0721,
2556 .bInterfaceClass = USB_CLASS_VIDEO,
2557 .bInterfaceSubClass = 1,
2558 .bInterfaceProtocol = 0,
2559 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2560 /* Microsoft Lifecam VX-7000 */
2561 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2562 | USB_DEVICE_ID_MATCH_INT_INFO,
2563 .idVendor = 0x045e,
2564 .idProduct = 0x0723,
2565 .bInterfaceClass = USB_CLASS_VIDEO,
2566 .bInterfaceSubClass = 1,
2567 .bInterfaceProtocol = 0,
2568 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2569 /* Logitech, Webcam C910 */
2570 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2571 | USB_DEVICE_ID_MATCH_INT_INFO,
2572 .idVendor = 0x046d,
2573 .idProduct = 0x0821,
2574 .bInterfaceClass = USB_CLASS_VIDEO,
2575 .bInterfaceSubClass = 1,
2576 .bInterfaceProtocol = 0,
2577 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2578 /* Logitech, Webcam B910 */
2579 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2580 | USB_DEVICE_ID_MATCH_INT_INFO,
2581 .idVendor = 0x046d,
2582 .idProduct = 0x0823,
2583 .bInterfaceClass = USB_CLASS_VIDEO,
2584 .bInterfaceSubClass = 1,
2585 .bInterfaceProtocol = 0,
2586 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2587 /* Logitech Quickcam Fusion */
2588 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2589 | USB_DEVICE_ID_MATCH_INT_INFO,
2590 .idVendor = 0x046d,
2591 .idProduct = 0x08c1,
2592 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2593 .bInterfaceSubClass = 1,
2594 .bInterfaceProtocol = 0 },
2595 /* Logitech Quickcam Orbit MP */
2596 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2597 | USB_DEVICE_ID_MATCH_INT_INFO,
2598 .idVendor = 0x046d,
2599 .idProduct = 0x08c2,
2600 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2601 .bInterfaceSubClass = 1,
2602 .bInterfaceProtocol = 0 },
2603 /* Logitech Quickcam Pro for Notebook */
2604 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2605 | USB_DEVICE_ID_MATCH_INT_INFO,
2606 .idVendor = 0x046d,
2607 .idProduct = 0x08c3,
2608 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2609 .bInterfaceSubClass = 1,
2610 .bInterfaceProtocol = 0 },
2611 /* Logitech Quickcam Pro 5000 */
2612 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2613 | USB_DEVICE_ID_MATCH_INT_INFO,
2614 .idVendor = 0x046d,
2615 .idProduct = 0x08c5,
2616 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2617 .bInterfaceSubClass = 1,
2618 .bInterfaceProtocol = 0 },
2619 /* Logitech Quickcam OEM Dell Notebook */
2620 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2621 | USB_DEVICE_ID_MATCH_INT_INFO,
2622 .idVendor = 0x046d,
2623 .idProduct = 0x08c6,
2624 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2625 .bInterfaceSubClass = 1,
2626 .bInterfaceProtocol = 0 },
2627 /* Logitech Quickcam OEM Cisco VT Camera II */
2628 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2629 | USB_DEVICE_ID_MATCH_INT_INFO,
2630 .idVendor = 0x046d,
2631 .idProduct = 0x08c7,
2632 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2633 .bInterfaceSubClass = 1,
2634 .bInterfaceProtocol = 0 },
2635 /* Logitech HD Pro Webcam C920 */
2636 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2637 | USB_DEVICE_ID_MATCH_INT_INFO,
2638 .idVendor = 0x046d,
2639 .idProduct = 0x082d,
2640 .bInterfaceClass = USB_CLASS_VIDEO,
2641 .bInterfaceSubClass = 1,
2642 .bInterfaceProtocol = 0,
2643 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT
2644 | UVC_QUIRK_INVALID_DEVICE_SOF) },
2645 /* Logitech HD Pro Webcam C922 */
2646 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2647 | USB_DEVICE_ID_MATCH_INT_INFO,
2648 .idVendor = 0x046d,
2649 .idProduct = 0x085c,
2650 .bInterfaceClass = USB_CLASS_VIDEO,
2651 .bInterfaceSubClass = 1,
2652 .bInterfaceProtocol = 0,
2653 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_INVALID_DEVICE_SOF) },
2654 /* Logitech Rally Bar Huddle */
2655 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2656 | USB_DEVICE_ID_MATCH_INT_INFO,
2657 .idVendor = 0x046d,
2658 .idProduct = 0x087c,
2659 .bInterfaceClass = USB_CLASS_VIDEO,
2660 .bInterfaceSubClass = 1,
2661 .bInterfaceProtocol = 0,
2662 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2663 /* Logitech Rally Bar */
2664 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2665 | USB_DEVICE_ID_MATCH_INT_INFO,
2666 .idVendor = 0x046d,
2667 .idProduct = 0x089b,
2668 .bInterfaceClass = USB_CLASS_VIDEO,
2669 .bInterfaceSubClass = 1,
2670 .bInterfaceProtocol = 0,
2671 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2672 /* Logitech Rally Bar Mini */
2673 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2674 | USB_DEVICE_ID_MATCH_INT_INFO,
2675 .idVendor = 0x046d,
2676 .idProduct = 0x08d3,
2677 .bInterfaceClass = USB_CLASS_VIDEO,
2678 .bInterfaceSubClass = 1,
2679 .bInterfaceProtocol = 0,
2680 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_NO_RESET_RESUME) },
2681 /* Chicony CNF7129 (Asus EEE 100HE) */
2682 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2683 | USB_DEVICE_ID_MATCH_INT_INFO,
2684 .idVendor = 0x04f2,
2685 .idProduct = 0xb071,
2686 .bInterfaceClass = USB_CLASS_VIDEO,
2687 .bInterfaceSubClass = 1,
2688 .bInterfaceProtocol = 0,
2689 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2690 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2691 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2692 | USB_DEVICE_ID_MATCH_INT_INFO,
2693 .idVendor = 0x058f,
2694 .idProduct = 0x3820,
2695 .bInterfaceClass = USB_CLASS_VIDEO,
2696 .bInterfaceSubClass = 1,
2697 .bInterfaceProtocol = 0,
2698 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2699 /* Dell XPS m1530 */
2700 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2701 | USB_DEVICE_ID_MATCH_INT_INFO,
2702 .idVendor = 0x05a9,
2703 .idProduct = 0x2640,
2704 .bInterfaceClass = USB_CLASS_VIDEO,
2705 .bInterfaceSubClass = 1,
2706 .bInterfaceProtocol = 0,
2707 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2708 /* Dell SP2008WFP Monitor */
2709 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2710 | USB_DEVICE_ID_MATCH_INT_INFO,
2711 .idVendor = 0x05a9,
2712 .idProduct = 0x2641,
2713 .bInterfaceClass = USB_CLASS_VIDEO,
2714 .bInterfaceSubClass = 1,
2715 .bInterfaceProtocol = 0,
2716 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2717 /* Dell Alienware X51 */
2718 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2719 | USB_DEVICE_ID_MATCH_INT_INFO,
2720 .idVendor = 0x05a9,
2721 .idProduct = 0x2643,
2722 .bInterfaceClass = USB_CLASS_VIDEO,
2723 .bInterfaceSubClass = 1,
2724 .bInterfaceProtocol = 0,
2725 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2726 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2727 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2728 | USB_DEVICE_ID_MATCH_INT_INFO,
2729 .idVendor = 0x05a9,
2730 .idProduct = 0x264a,
2731 .bInterfaceClass = USB_CLASS_VIDEO,
2732 .bInterfaceSubClass = 1,
2733 .bInterfaceProtocol = 0,
2734 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2735 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2736 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2737 | USB_DEVICE_ID_MATCH_INT_INFO,
2738 .idVendor = 0x05a9,
2739 .idProduct = 0x7670,
2740 .bInterfaceClass = USB_CLASS_VIDEO,
2741 .bInterfaceSubClass = 1,
2742 .bInterfaceProtocol = 0,
2743 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2744 /* Apple Built-In iSight */
2745 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2746 | USB_DEVICE_ID_MATCH_INT_INFO,
2747 .idVendor = 0x05ac,
2748 .idProduct = 0x8501,
2749 .bInterfaceClass = USB_CLASS_VIDEO,
2750 .bInterfaceSubClass = 1,
2751 .bInterfaceProtocol = 0,
2752 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2753 | UVC_QUIRK_BUILTIN_ISIGHT) },
2754 /* Apple FaceTime HD Camera (Built-In) */
2755 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2756 | USB_DEVICE_ID_MATCH_INT_INFO,
2757 .idVendor = 0x05ac,
2758 .idProduct = 0x8514,
2759 .bInterfaceClass = USB_CLASS_VIDEO,
2760 .bInterfaceSubClass = 1,
2761 .bInterfaceProtocol = 0,
2762 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2763 /* Apple Built-In iSight via iBridge */
2764 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2765 | USB_DEVICE_ID_MATCH_INT_INFO,
2766 .idVendor = 0x05ac,
2767 .idProduct = 0x8600,
2768 .bInterfaceClass = USB_CLASS_VIDEO,
2769 .bInterfaceSubClass = 1,
2770 .bInterfaceProtocol = 0,
2771 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2772 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2773 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2774 | USB_DEVICE_ID_MATCH_INT_INFO,
2775 .idVendor = 0x05c8,
2776 .idProduct = 0x0403,
2777 .bInterfaceClass = USB_CLASS_VIDEO,
2778 .bInterfaceSubClass = 1,
2779 .bInterfaceProtocol = 0,
2780 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2781 /* Genesys Logic USB 2.0 PC Camera */
2782 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2783 | USB_DEVICE_ID_MATCH_INT_INFO,
2784 .idVendor = 0x05e3,
2785 .idProduct = 0x0505,
2786 .bInterfaceClass = USB_CLASS_VIDEO,
2787 .bInterfaceSubClass = 1,
2788 .bInterfaceProtocol = 0,
2789 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2790 /* Hercules Classic Silver */
2791 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2792 | USB_DEVICE_ID_MATCH_INT_INFO,
2793 .idVendor = 0x06f8,
2794 .idProduct = 0x300c,
2795 .bInterfaceClass = USB_CLASS_VIDEO,
2796 .bInterfaceSubClass = 1,
2797 .bInterfaceProtocol = 0,
2798 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2799 /* ViMicro Vega */
2800 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2801 | USB_DEVICE_ID_MATCH_INT_INFO,
2802 .idVendor = 0x0ac8,
2803 .idProduct = 0x332d,
2804 .bInterfaceClass = USB_CLASS_VIDEO,
2805 .bInterfaceSubClass = 1,
2806 .bInterfaceProtocol = 0,
2807 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2808 /* ViMicro - Minoru3D */
2809 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2810 | USB_DEVICE_ID_MATCH_INT_INFO,
2811 .idVendor = 0x0ac8,
2812 .idProduct = 0x3410,
2813 .bInterfaceClass = USB_CLASS_VIDEO,
2814 .bInterfaceSubClass = 1,
2815 .bInterfaceProtocol = 0,
2816 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2817 /* ViMicro Venus - Minoru3D */
2818 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2819 | USB_DEVICE_ID_MATCH_INT_INFO,
2820 .idVendor = 0x0ac8,
2821 .idProduct = 0x3420,
2822 .bInterfaceClass = USB_CLASS_VIDEO,
2823 .bInterfaceSubClass = 1,
2824 .bInterfaceProtocol = 0,
2825 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2826 /* Ophir Optronics - SPCAM 620U */
2827 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2828 | USB_DEVICE_ID_MATCH_INT_INFO,
2829 .idVendor = 0x0bd3,
2830 .idProduct = 0x0555,
2831 .bInterfaceClass = USB_CLASS_VIDEO,
2832 .bInterfaceSubClass = 1,
2833 .bInterfaceProtocol = 0,
2834 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2835 /* Sonix Technology Co. Ltd. - 292A IPC AR0330 */
2836 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2837 | USB_DEVICE_ID_MATCH_INT_INFO,
2838 .idVendor = 0x0c45,
2839 .idProduct = 0x6366,
2840 .bInterfaceClass = USB_CLASS_VIDEO,
2841 .bInterfaceSubClass = 1,
2842 .bInterfaceProtocol = 0,
2843 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) },
2844 /* MT6227 */
2845 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2846 | USB_DEVICE_ID_MATCH_INT_INFO,
2847 .idVendor = 0x0e8d,
2848 .idProduct = 0x0004,
2849 .bInterfaceClass = USB_CLASS_VIDEO,
2850 .bInterfaceSubClass = 1,
2851 .bInterfaceProtocol = 0,
2852 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2853 | UVC_QUIRK_PROBE_DEF) },
2854 /* IMC Networks (Medion Akoya) */
2855 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2856 | USB_DEVICE_ID_MATCH_INT_INFO,
2857 .idVendor = 0x13d3,
2858 .idProduct = 0x5103,
2859 .bInterfaceClass = USB_CLASS_VIDEO,
2860 .bInterfaceSubClass = 1,
2861 .bInterfaceProtocol = 0,
2862 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2863 /* JMicron USB2.0 XGA WebCam */
2864 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2865 | USB_DEVICE_ID_MATCH_INT_INFO,
2866 .idVendor = 0x152d,
2867 .idProduct = 0x0310,
2868 .bInterfaceClass = USB_CLASS_VIDEO,
2869 .bInterfaceSubClass = 1,
2870 .bInterfaceProtocol = 0,
2871 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2872 /* Kurokesu C1 PRO */
2873 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2874 | USB_DEVICE_ID_MATCH_INT_INFO,
2875 .idVendor = 0x16d0,
2876 .idProduct = 0x0ed1,
2877 .bInterfaceClass = USB_CLASS_VIDEO,
2878 .bInterfaceSubClass = 1,
2879 .bInterfaceProtocol = 0,
2880 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_MJPEG_NO_EOF) },
2881 /* Syntek (HP Spartan) */
2882 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2883 | USB_DEVICE_ID_MATCH_INT_INFO,
2884 .idVendor = 0x174f,
2885 .idProduct = 0x5212,
2886 .bInterfaceClass = USB_CLASS_VIDEO,
2887 .bInterfaceSubClass = 1,
2888 .bInterfaceProtocol = 0,
2889 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2890 /* Syntek (Samsung Q310) */
2891 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2892 | USB_DEVICE_ID_MATCH_INT_INFO,
2893 .idVendor = 0x174f,
2894 .idProduct = 0x5931,
2895 .bInterfaceClass = USB_CLASS_VIDEO,
2896 .bInterfaceSubClass = 1,
2897 .bInterfaceProtocol = 0,
2898 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2899 /* Syntek (Packard Bell EasyNote MX52 */
2900 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2901 | USB_DEVICE_ID_MATCH_INT_INFO,
2902 .idVendor = 0x174f,
2903 .idProduct = 0x8a12,
2904 .bInterfaceClass = USB_CLASS_VIDEO,
2905 .bInterfaceSubClass = 1,
2906 .bInterfaceProtocol = 0,
2907 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2908 /* Syntek (Asus F9SG) */
2909 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2910 | USB_DEVICE_ID_MATCH_INT_INFO,
2911 .idVendor = 0x174f,
2912 .idProduct = 0x8a31,
2913 .bInterfaceClass = USB_CLASS_VIDEO,
2914 .bInterfaceSubClass = 1,
2915 .bInterfaceProtocol = 0,
2916 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2917 /* Syntek (Asus U3S) */
2918 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2919 | USB_DEVICE_ID_MATCH_INT_INFO,
2920 .idVendor = 0x174f,
2921 .idProduct = 0x8a33,
2922 .bInterfaceClass = USB_CLASS_VIDEO,
2923 .bInterfaceSubClass = 1,
2924 .bInterfaceProtocol = 0,
2925 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2926 /* Syntek (JAOtech Smart Terminal) */
2927 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2928 | USB_DEVICE_ID_MATCH_INT_INFO,
2929 .idVendor = 0x174f,
2930 .idProduct = 0x8a34,
2931 .bInterfaceClass = USB_CLASS_VIDEO,
2932 .bInterfaceSubClass = 1,
2933 .bInterfaceProtocol = 0,
2934 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2935 /* Miricle 307K */
2936 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2937 | USB_DEVICE_ID_MATCH_INT_INFO,
2938 .idVendor = 0x17dc,
2939 .idProduct = 0x0202,
2940 .bInterfaceClass = USB_CLASS_VIDEO,
2941 .bInterfaceSubClass = 1,
2942 .bInterfaceProtocol = 0,
2943 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2944 /* Lenovo Thinkpad SL400/SL500 */
2945 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2946 | USB_DEVICE_ID_MATCH_INT_INFO,
2947 .idVendor = 0x17ef,
2948 .idProduct = 0x480b,
2949 .bInterfaceClass = USB_CLASS_VIDEO,
2950 .bInterfaceSubClass = 1,
2951 .bInterfaceProtocol = 0,
2952 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2953 /* Aveo Technology USB 2.0 Camera */
2954 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2955 | USB_DEVICE_ID_MATCH_INT_INFO,
2956 .idVendor = 0x1871,
2957 .idProduct = 0x0306,
2958 .bInterfaceClass = USB_CLASS_VIDEO,
2959 .bInterfaceSubClass = 1,
2960 .bInterfaceProtocol = 0,
2961 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2962 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2963 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2964 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2965 | USB_DEVICE_ID_MATCH_INT_INFO,
2966 .idVendor = 0x1871,
2967 .idProduct = 0x0516,
2968 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2969 .bInterfaceSubClass = 1,
2970 .bInterfaceProtocol = 0 },
2971 /* Ecamm Pico iMage */
2972 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2973 | USB_DEVICE_ID_MATCH_INT_INFO,
2974 .idVendor = 0x18cd,
2975 .idProduct = 0xcafe,
2976 .bInterfaceClass = USB_CLASS_VIDEO,
2977 .bInterfaceSubClass = 1,
2978 .bInterfaceProtocol = 0,
2979 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2980 /* Manta MM-353 Plako */
2981 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2982 | USB_DEVICE_ID_MATCH_INT_INFO,
2983 .idVendor = 0x18ec,
2984 .idProduct = 0x3188,
2985 .bInterfaceClass = USB_CLASS_VIDEO,
2986 .bInterfaceSubClass = 1,
2987 .bInterfaceProtocol = 0,
2988 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2989 /* FSC WebCam V30S */
2990 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2991 | USB_DEVICE_ID_MATCH_INT_INFO,
2992 .idVendor = 0x18ec,
2993 .idProduct = 0x3288,
2994 .bInterfaceClass = USB_CLASS_VIDEO,
2995 .bInterfaceSubClass = 1,
2996 .bInterfaceProtocol = 0,
2997 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2998 /* Arkmicro unbranded */
2999 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3000 | USB_DEVICE_ID_MATCH_INT_INFO,
3001 .idVendor = 0x18ec,
3002 .idProduct = 0x3290,
3003 .bInterfaceClass = USB_CLASS_VIDEO,
3004 .bInterfaceSubClass = 1,
3005 .bInterfaceProtocol = 0,
3006 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
3007 /* The Imaging Source USB CCD cameras */
3008 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3009 | USB_DEVICE_ID_MATCH_INT_INFO,
3010 .idVendor = 0x199e,
3011 .idProduct = 0x8102,
3012 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3013 .bInterfaceSubClass = 1,
3014 .bInterfaceProtocol = 0 },
3015 /* Bodelin ProScopeHR */
3016 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3017 | USB_DEVICE_ID_MATCH_DEV_HI
3018 | USB_DEVICE_ID_MATCH_INT_INFO,
3019 .idVendor = 0x19ab,
3020 .idProduct = 0x1000,
3021 .bcdDevice_hi = 0x0126,
3022 .bInterfaceClass = USB_CLASS_VIDEO,
3023 .bInterfaceSubClass = 1,
3024 .bInterfaceProtocol = 0,
3025 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
3026 /* MSI StarCam 370i */
3027 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3028 | USB_DEVICE_ID_MATCH_INT_INFO,
3029 .idVendor = 0x1b3b,
3030 .idProduct = 0x2951,
3031 .bInterfaceClass = USB_CLASS_VIDEO,
3032 .bInterfaceSubClass = 1,
3033 .bInterfaceProtocol = 0,
3034 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3035 /* Generalplus Technology Inc. 808 Camera */
3036 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3037 | USB_DEVICE_ID_MATCH_INT_INFO,
3038 .idVendor = 0x1b3f,
3039 .idProduct = 0x2002,
3040 .bInterfaceClass = USB_CLASS_VIDEO,
3041 .bInterfaceSubClass = 1,
3042 .bInterfaceProtocol = 0,
3043 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3044 /* Shenzhen Aoni Electronic Co.,Ltd 2K FHD camera */
3045 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3046 | USB_DEVICE_ID_MATCH_INT_INFO,
3047 .idVendor = 0x1bcf,
3048 .idProduct = 0x0b40,
3049 .bInterfaceClass = USB_CLASS_VIDEO,
3050 .bInterfaceSubClass = 1,
3051 .bInterfaceProtocol = 0,
3052 .driver_info = (kernel_ulong_t)&(const struct uvc_device_info){
3053 .uvc_version = 0x010a,
3054 } },
3055 /* SiGma Micro USB Web Camera */
3056 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3057 | USB_DEVICE_ID_MATCH_INT_INFO,
3058 .idVendor = 0x1c4f,
3059 .idProduct = 0x3000,
3060 .bInterfaceClass = USB_CLASS_VIDEO,
3061 .bInterfaceSubClass = 1,
3062 .bInterfaceProtocol = 0,
3063 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
3064 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
3065 /* Actions Microelectronics Co. Display capture-UVC05 */
3066 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3067 | USB_DEVICE_ID_MATCH_INT_INFO,
3068 .idVendor = 0x1de1,
3069 .idProduct = 0xf105,
3070 .bInterfaceClass = USB_CLASS_VIDEO,
3071 .bInterfaceSubClass = 1,
3072 .bInterfaceProtocol = 0,
3073 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
3074 /* NXP Semiconductors IR VIDEO */
3075 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3076 | USB_DEVICE_ID_MATCH_INT_INFO,
3077 .idVendor = 0x1fc9,
3078 .idProduct = 0x009b,
3079 .bInterfaceClass = USB_CLASS_VIDEO,
3080 .bInterfaceSubClass = 1,
3081 .bInterfaceProtocol = 0,
3082 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
3083 /* Oculus VR Positional Tracker DK2 */
3084 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3085 | USB_DEVICE_ID_MATCH_INT_INFO,
3086 .idVendor = 0x2833,
3087 .idProduct = 0x0201,
3088 .bInterfaceClass = USB_CLASS_VIDEO,
3089 .bInterfaceSubClass = 1,
3090 .bInterfaceProtocol = 0,
3091 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3092 /* Oculus VR Rift Sensor */
3093 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3094 | USB_DEVICE_ID_MATCH_INT_INFO,
3095 .idVendor = 0x2833,
3096 .idProduct = 0x0211,
3097 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3098 .bInterfaceSubClass = 1,
3099 .bInterfaceProtocol = 0,
3100 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3101 /* GEO Semiconductor GC6500 */
3102 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3103 | USB_DEVICE_ID_MATCH_INT_INFO,
3104 .idVendor = 0x29fe,
3105 .idProduct = 0x4d53,
3106 .bInterfaceClass = USB_CLASS_VIDEO,
3107 .bInterfaceSubClass = 1,
3108 .bInterfaceProtocol = 0,
3109 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3110 /* Insta360 Link */
3111 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3112 | USB_DEVICE_ID_MATCH_INT_INFO,
3113 .idVendor = 0x2e1a,
3114 .idProduct = 0x4c01,
3115 .bInterfaceClass = USB_CLASS_VIDEO,
3116 .bInterfaceSubClass = 1,
3117 .bInterfaceProtocol = 0,
3118 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_DISABLE_AUTOSUSPEND) },
3119 /* Intel D410/ASR depth camera */
3120 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3121 | USB_DEVICE_ID_MATCH_INT_INFO,
3122 .idVendor = 0x8086,
3123 .idProduct = 0x0ad2,
3124 .bInterfaceClass = USB_CLASS_VIDEO,
3125 .bInterfaceSubClass = 1,
3126 .bInterfaceProtocol = 0,
3127 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3128 /* Intel D415/ASRC depth camera */
3129 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3130 | USB_DEVICE_ID_MATCH_INT_INFO,
3131 .idVendor = 0x8086,
3132 .idProduct = 0x0ad3,
3133 .bInterfaceClass = USB_CLASS_VIDEO,
3134 .bInterfaceSubClass = 1,
3135 .bInterfaceProtocol = 0,
3136 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3137 /* Intel D430/AWG depth camera */
3138 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3139 | USB_DEVICE_ID_MATCH_INT_INFO,
3140 .idVendor = 0x8086,
3141 .idProduct = 0x0ad4,
3142 .bInterfaceClass = USB_CLASS_VIDEO,
3143 .bInterfaceSubClass = 1,
3144 .bInterfaceProtocol = 0,
3145 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3146 /* Intel RealSense D4M */
3147 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3148 | USB_DEVICE_ID_MATCH_INT_INFO,
3149 .idVendor = 0x8086,
3150 .idProduct = 0x0b03,
3151 .bInterfaceClass = USB_CLASS_VIDEO,
3152 .bInterfaceSubClass = 1,
3153 .bInterfaceProtocol = 0,
3154 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3155 /* Intel D435/AWGC depth camera */
3156 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3157 | USB_DEVICE_ID_MATCH_INT_INFO,
3158 .idVendor = 0x8086,
3159 .idProduct = 0x0b07,
3160 .bInterfaceClass = USB_CLASS_VIDEO,
3161 .bInterfaceSubClass = 1,
3162 .bInterfaceProtocol = 0,
3163 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3164 /* Intel D435i depth camera */
3165 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3166 | USB_DEVICE_ID_MATCH_INT_INFO,
3167 .idVendor = 0x8086,
3168 .idProduct = 0x0b3a,
3169 .bInterfaceClass = USB_CLASS_VIDEO,
3170 .bInterfaceSubClass = 1,
3171 .bInterfaceProtocol = 0,
3172 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3173 /* Intel D405 Depth Camera */
3174 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3175 | USB_DEVICE_ID_MATCH_INT_INFO,
3176 .idVendor = 0x8086,
3177 .idProduct = 0x0b5b,
3178 .bInterfaceClass = USB_CLASS_VIDEO,
3179 .bInterfaceSubClass = 1,
3180 .bInterfaceProtocol = 0,
3181 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3182 /* Intel D455 Depth Camera */
3183 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3184 | USB_DEVICE_ID_MATCH_INT_INFO,
3185 .idVendor = 0x8086,
3186 .idProduct = 0x0b5c,
3187 .bInterfaceClass = USB_CLASS_VIDEO,
3188 .bInterfaceSubClass = 1,
3189 .bInterfaceProtocol = 0,
3190 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3191 /* Intel D421 Depth Module */
3192 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3193 | USB_DEVICE_ID_MATCH_INT_INFO,
3194 .idVendor = 0x8086,
3195 .idProduct = 0x1155,
3196 .bInterfaceClass = USB_CLASS_VIDEO,
3197 .bInterfaceSubClass = 1,
3198 .bInterfaceProtocol = 0,
3199 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3200 /* Generic USB Video Class */
3201 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3202 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3203 {}
3204 };
3205
3206 MODULE_DEVICE_TABLE(usb, uvc_ids);
3207
3208 struct uvc_driver uvc_driver = {
3209 .driver = {
3210 .name = "uvcvideo",
3211 .probe = uvc_probe,
3212 .disconnect = uvc_disconnect,
3213 .suspend = uvc_suspend,
3214 .resume = uvc_resume,
3215 .reset_resume = uvc_reset_resume,
3216 .id_table = uvc_ids,
3217 .supports_autosuspend = 1,
3218 },
3219 };
3220
uvc_init(void)3221 static int __init uvc_init(void)
3222 {
3223 int ret;
3224
3225 uvc_debugfs_init();
3226
3227 ret = usb_register(&uvc_driver.driver);
3228 if (ret < 0) {
3229 uvc_debugfs_cleanup();
3230 return ret;
3231 }
3232
3233 return 0;
3234 }
3235
uvc_cleanup(void)3236 static void __exit uvc_cleanup(void)
3237 {
3238 usb_deregister(&uvc_driver.driver);
3239 uvc_debugfs_cleanup();
3240 }
3241
3242 module_init(uvc_init);
3243 module_exit(uvc_cleanup);
3244
3245 MODULE_AUTHOR(DRIVER_AUTHOR);
3246 MODULE_DESCRIPTION(DRIVER_DESC);
3247 MODULE_LICENSE("GPL");
3248 MODULE_VERSION(DRIVER_VERSION);
3249
3250