1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * uvc_driver.c -- USB Video Class driver
4 *
5 * Copyright (C) 2005-2010
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 */
8
9 #include <linux/atomic.h>
10 #include <linux/kernel.h>
11 #include <linux/list.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/usb.h>
15 #include <linux/videodev2.h>
16 #include <linux/vmalloc.h>
17 #include <linux/wait.h>
18 #include <linux/version.h>
19 #include <asm/unaligned.h>
20
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-ioctl.h>
23
24 #include "uvcvideo.h"
25
26 #define DRIVER_AUTHOR "Laurent Pinchart " \
27 "<laurent.pinchart@ideasonboard.com>"
28 #define DRIVER_DESC "USB Video Class driver"
29
30 unsigned int uvc_clock_param = CLOCK_MONOTONIC;
31 unsigned int uvc_hw_timestamps_param;
32 unsigned int uvc_no_drop_param;
33 static unsigned int uvc_quirks_param = -1;
34 unsigned int uvc_trace_param;
35 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
36
37 /* ------------------------------------------------------------------------
38 * Video formats
39 */
40
41 static struct uvc_format_desc uvc_fmts[] = {
42 {
43 .name = "YUV 4:2:2 (YUYV)",
44 .guid = UVC_GUID_FORMAT_YUY2,
45 .fcc = V4L2_PIX_FMT_YUYV,
46 },
47 {
48 .name = "YUV 4:2:2 (YUYV)",
49 .guid = UVC_GUID_FORMAT_YUY2_ISIGHT,
50 .fcc = V4L2_PIX_FMT_YUYV,
51 },
52 {
53 .name = "YUV 4:2:0 (NV12)",
54 .guid = UVC_GUID_FORMAT_NV12,
55 .fcc = V4L2_PIX_FMT_NV12,
56 },
57 {
58 .name = "MJPEG",
59 .guid = UVC_GUID_FORMAT_MJPEG,
60 .fcc = V4L2_PIX_FMT_MJPEG,
61 },
62 {
63 .name = "YVU 4:2:0 (YV12)",
64 .guid = UVC_GUID_FORMAT_YV12,
65 .fcc = V4L2_PIX_FMT_YVU420,
66 },
67 {
68 .name = "YUV 4:2:0 (I420)",
69 .guid = UVC_GUID_FORMAT_I420,
70 .fcc = V4L2_PIX_FMT_YUV420,
71 },
72 {
73 .name = "YUV 4:2:0 (M420)",
74 .guid = UVC_GUID_FORMAT_M420,
75 .fcc = V4L2_PIX_FMT_M420,
76 },
77 {
78 .name = "YUV 4:2:2 (UYVY)",
79 .guid = UVC_GUID_FORMAT_UYVY,
80 .fcc = V4L2_PIX_FMT_UYVY,
81 },
82 {
83 .name = "Greyscale 8-bit (Y800)",
84 .guid = UVC_GUID_FORMAT_Y800,
85 .fcc = V4L2_PIX_FMT_GREY,
86 },
87 {
88 .name = "Greyscale 8-bit (Y8 )",
89 .guid = UVC_GUID_FORMAT_Y8,
90 .fcc = V4L2_PIX_FMT_GREY,
91 },
92 {
93 .name = "Greyscale 8-bit (D3DFMT_L8)",
94 .guid = UVC_GUID_FORMAT_D3DFMT_L8,
95 .fcc = V4L2_PIX_FMT_GREY,
96 },
97 {
98 .name = "IR 8-bit (L8_IR)",
99 .guid = UVC_GUID_FORMAT_KSMEDIA_L8_IR,
100 .fcc = V4L2_PIX_FMT_GREY,
101 },
102 {
103 .name = "Greyscale 10-bit (Y10 )",
104 .guid = UVC_GUID_FORMAT_Y10,
105 .fcc = V4L2_PIX_FMT_Y10,
106 },
107 {
108 .name = "Greyscale 12-bit (Y12 )",
109 .guid = UVC_GUID_FORMAT_Y12,
110 .fcc = V4L2_PIX_FMT_Y12,
111 },
112 {
113 .name = "Greyscale 16-bit (Y16 )",
114 .guid = UVC_GUID_FORMAT_Y16,
115 .fcc = V4L2_PIX_FMT_Y16,
116 },
117 {
118 .name = "BGGR Bayer (BY8 )",
119 .guid = UVC_GUID_FORMAT_BY8,
120 .fcc = V4L2_PIX_FMT_SBGGR8,
121 },
122 {
123 .name = "BGGR Bayer (BA81)",
124 .guid = UVC_GUID_FORMAT_BA81,
125 .fcc = V4L2_PIX_FMT_SBGGR8,
126 },
127 {
128 .name = "GBRG Bayer (GBRG)",
129 .guid = UVC_GUID_FORMAT_GBRG,
130 .fcc = V4L2_PIX_FMT_SGBRG8,
131 },
132 {
133 .name = "GRBG Bayer (GRBG)",
134 .guid = UVC_GUID_FORMAT_GRBG,
135 .fcc = V4L2_PIX_FMT_SGRBG8,
136 },
137 {
138 .name = "RGGB Bayer (RGGB)",
139 .guid = UVC_GUID_FORMAT_RGGB,
140 .fcc = V4L2_PIX_FMT_SRGGB8,
141 },
142 {
143 .name = "RGB565",
144 .guid = UVC_GUID_FORMAT_RGBP,
145 .fcc = V4L2_PIX_FMT_RGB565,
146 },
147 {
148 .name = "BGR 8:8:8 (BGR3)",
149 .guid = UVC_GUID_FORMAT_BGR3,
150 .fcc = V4L2_PIX_FMT_BGR24,
151 },
152 {
153 .name = "H.264",
154 .guid = UVC_GUID_FORMAT_H264,
155 .fcc = V4L2_PIX_FMT_H264,
156 },
157 {
158 .name = "Greyscale 8 L/R (Y8I)",
159 .guid = UVC_GUID_FORMAT_Y8I,
160 .fcc = V4L2_PIX_FMT_Y8I,
161 },
162 {
163 .name = "Greyscale 12 L/R (Y12I)",
164 .guid = UVC_GUID_FORMAT_Y12I,
165 .fcc = V4L2_PIX_FMT_Y12I,
166 },
167 {
168 .name = "Depth data 16-bit (Z16)",
169 .guid = UVC_GUID_FORMAT_Z16,
170 .fcc = V4L2_PIX_FMT_Z16,
171 },
172 {
173 .name = "Bayer 10-bit (SRGGB10P)",
174 .guid = UVC_GUID_FORMAT_RW10,
175 .fcc = V4L2_PIX_FMT_SRGGB10P,
176 },
177 {
178 .name = "Bayer 16-bit (SBGGR16)",
179 .guid = UVC_GUID_FORMAT_BG16,
180 .fcc = V4L2_PIX_FMT_SBGGR16,
181 },
182 {
183 .name = "Bayer 16-bit (SGBRG16)",
184 .guid = UVC_GUID_FORMAT_GB16,
185 .fcc = V4L2_PIX_FMT_SGBRG16,
186 },
187 {
188 .name = "Bayer 16-bit (SRGGB16)",
189 .guid = UVC_GUID_FORMAT_RG16,
190 .fcc = V4L2_PIX_FMT_SRGGB16,
191 },
192 {
193 .name = "Bayer 16-bit (SGRBG16)",
194 .guid = UVC_GUID_FORMAT_GR16,
195 .fcc = V4L2_PIX_FMT_SGRBG16,
196 },
197 {
198 .name = "Depth data 16-bit (Z16)",
199 .guid = UVC_GUID_FORMAT_INVZ,
200 .fcc = V4L2_PIX_FMT_Z16,
201 },
202 {
203 .name = "Greyscale 10-bit (Y10 )",
204 .guid = UVC_GUID_FORMAT_INVI,
205 .fcc = V4L2_PIX_FMT_Y10,
206 },
207 {
208 .name = "IR:Depth 26-bit (INZI)",
209 .guid = UVC_GUID_FORMAT_INZI,
210 .fcc = V4L2_PIX_FMT_INZI,
211 },
212 {
213 .name = "4-bit Depth Confidence (Packed)",
214 .guid = UVC_GUID_FORMAT_CNF4,
215 .fcc = V4L2_PIX_FMT_CNF4,
216 },
217 {
218 .name = "HEVC",
219 .guid = UVC_GUID_FORMAT_HEVC,
220 .fcc = V4L2_PIX_FMT_HEVC,
221 },
222 };
223
224 /* ------------------------------------------------------------------------
225 * Utility functions
226 */
227
uvc_find_endpoint(struct usb_host_interface * alts,u8 epaddr)228 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
229 u8 epaddr)
230 {
231 struct usb_host_endpoint *ep;
232 unsigned int i;
233
234 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
235 ep = &alts->endpoint[i];
236 if (ep->desc.bEndpointAddress == epaddr)
237 return ep;
238 }
239
240 return NULL;
241 }
242
uvc_format_by_guid(const u8 guid[16])243 static struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16])
244 {
245 unsigned int len = ARRAY_SIZE(uvc_fmts);
246 unsigned int i;
247
248 for (i = 0; i < len; ++i) {
249 if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
250 return &uvc_fmts[i];
251 }
252
253 return NULL;
254 }
255
uvc_colorspace(const u8 primaries)256 static enum v4l2_colorspace uvc_colorspace(const u8 primaries)
257 {
258 static const enum v4l2_colorspace colorprimaries[] = {
259 V4L2_COLORSPACE_DEFAULT, /* Unspecified */
260 V4L2_COLORSPACE_SRGB,
261 V4L2_COLORSPACE_470_SYSTEM_M,
262 V4L2_COLORSPACE_470_SYSTEM_BG,
263 V4L2_COLORSPACE_SMPTE170M,
264 V4L2_COLORSPACE_SMPTE240M,
265 };
266
267 if (primaries < ARRAY_SIZE(colorprimaries))
268 return colorprimaries[primaries];
269
270 return V4L2_COLORSPACE_DEFAULT; /* Reserved */
271 }
272
uvc_xfer_func(const u8 transfer_characteristics)273 static enum v4l2_xfer_func uvc_xfer_func(const u8 transfer_characteristics)
274 {
275 /*
276 * V4L2 does not currently have definitions for all possible values of
277 * UVC transfer characteristics. If v4l2_xfer_func is extended with new
278 * values, the mapping below should be updated.
279 *
280 * Substitutions are taken from the mapping given for
281 * V4L2_XFER_FUNC_DEFAULT documented in videodev2.h.
282 */
283 static const enum v4l2_xfer_func xfer_funcs[] = {
284 V4L2_XFER_FUNC_DEFAULT, /* Unspecified */
285 V4L2_XFER_FUNC_709,
286 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 M */
287 V4L2_XFER_FUNC_709, /* Substitution for BT.470-2 B, G */
288 V4L2_XFER_FUNC_709, /* Substitution for SMPTE 170M */
289 V4L2_XFER_FUNC_SMPTE240M,
290 V4L2_XFER_FUNC_NONE,
291 V4L2_XFER_FUNC_SRGB,
292 };
293
294 if (transfer_characteristics < ARRAY_SIZE(xfer_funcs))
295 return xfer_funcs[transfer_characteristics];
296
297 return V4L2_XFER_FUNC_DEFAULT; /* Reserved */
298 }
299
uvc_ycbcr_enc(const u8 matrix_coefficients)300 static enum v4l2_ycbcr_encoding uvc_ycbcr_enc(const u8 matrix_coefficients)
301 {
302 /*
303 * V4L2 does not currently have definitions for all possible values of
304 * UVC matrix coefficients. If v4l2_ycbcr_encoding is extended with new
305 * values, the mapping below should be updated.
306 *
307 * Substitutions are taken from the mapping given for
308 * V4L2_YCBCR_ENC_DEFAULT documented in videodev2.h.
309 *
310 * FCC is assumed to be close enough to 601.
311 */
312 static const enum v4l2_ycbcr_encoding ycbcr_encs[] = {
313 V4L2_YCBCR_ENC_DEFAULT, /* Unspecified */
314 V4L2_YCBCR_ENC_709,
315 V4L2_YCBCR_ENC_601, /* Substitution for FCC */
316 V4L2_YCBCR_ENC_601, /* Substitution for BT.470-2 B, G */
317 V4L2_YCBCR_ENC_601,
318 V4L2_YCBCR_ENC_SMPTE240M,
319 };
320
321 if (matrix_coefficients < ARRAY_SIZE(ycbcr_encs))
322 return ycbcr_encs[matrix_coefficients];
323
324 return V4L2_YCBCR_ENC_DEFAULT; /* Reserved */
325 }
326
327 /* Simplify a fraction using a simple continued fraction decomposition. The
328 * idea here is to convert fractions such as 333333/10000000 to 1/30 using
329 * 32 bit arithmetic only. The algorithm is not perfect and relies upon two
330 * arbitrary parameters to remove non-significative terms from the simple
331 * continued fraction decomposition. Using 8 and 333 for n_terms and threshold
332 * respectively seems to give nice results.
333 */
uvc_simplify_fraction(u32 * numerator,u32 * denominator,unsigned int n_terms,unsigned int threshold)334 void uvc_simplify_fraction(u32 *numerator, u32 *denominator,
335 unsigned int n_terms, unsigned int threshold)
336 {
337 u32 *an;
338 u32 x, y, r;
339 unsigned int i, n;
340
341 an = kmalloc_array(n_terms, sizeof(*an), GFP_KERNEL);
342 if (an == NULL)
343 return;
344
345 /* Convert the fraction to a simple continued fraction. See
346 * https://mathforum.org/dr.math/faq/faq.fractions.html
347 * Stop if the current term is bigger than or equal to the given
348 * threshold.
349 */
350 x = *numerator;
351 y = *denominator;
352
353 for (n = 0; n < n_terms && y != 0; ++n) {
354 an[n] = x / y;
355 if (an[n] >= threshold) {
356 if (n < 2)
357 n++;
358 break;
359 }
360
361 r = x - an[n] * y;
362 x = y;
363 y = r;
364 }
365
366 /* Expand the simple continued fraction back to an integer fraction. */
367 x = 0;
368 y = 1;
369
370 for (i = n; i > 0; --i) {
371 r = y;
372 y = an[i-1] * y + x;
373 x = r;
374 }
375
376 *numerator = y;
377 *denominator = x;
378 kfree(an);
379 }
380
381 /* Convert a fraction to a frame interval in 100ns multiples. The idea here is
382 * to compute numerator / denominator * 10000000 using 32 bit fixed point
383 * arithmetic only.
384 */
uvc_fraction_to_interval(u32 numerator,u32 denominator)385 u32 uvc_fraction_to_interval(u32 numerator, u32 denominator)
386 {
387 u32 multiplier;
388
389 /* Saturate the result if the operation would overflow. */
390 if (denominator == 0 ||
391 numerator/denominator >= ((u32)-1)/10000000)
392 return (u32)-1;
393
394 /* Divide both the denominator and the multiplier by two until
395 * numerator * multiplier doesn't overflow. If anyone knows a better
396 * algorithm please let me know.
397 */
398 multiplier = 10000000;
399 while (numerator > ((u32)-1)/multiplier) {
400 multiplier /= 2;
401 denominator /= 2;
402 }
403
404 return denominator ? numerator * multiplier / denominator : 0;
405 }
406
407 /* ------------------------------------------------------------------------
408 * Terminal and unit management
409 */
410
uvc_entity_by_id(struct uvc_device * dev,int id)411 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
412 {
413 struct uvc_entity *entity;
414
415 list_for_each_entry(entity, &dev->entities, list) {
416 if (entity->id == id)
417 return entity;
418 }
419
420 return NULL;
421 }
422
uvc_entity_by_reference(struct uvc_device * dev,int id,struct uvc_entity * entity)423 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
424 int id, struct uvc_entity *entity)
425 {
426 unsigned int i;
427
428 if (entity == NULL)
429 entity = list_entry(&dev->entities, struct uvc_entity, list);
430
431 list_for_each_entry_continue(entity, &dev->entities, list) {
432 for (i = 0; i < entity->bNrInPins; ++i)
433 if (entity->baSourceID[i] == id)
434 return entity;
435 }
436
437 return NULL;
438 }
439
uvc_stream_by_id(struct uvc_device * dev,int id)440 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
441 {
442 struct uvc_streaming *stream;
443
444 list_for_each_entry(stream, &dev->streams, list) {
445 if (stream->header.bTerminalLink == id)
446 return stream;
447 }
448
449 return NULL;
450 }
451
452 /* ------------------------------------------------------------------------
453 * Streaming Object Management
454 */
455
uvc_stream_delete(struct uvc_streaming * stream)456 static void uvc_stream_delete(struct uvc_streaming *stream)
457 {
458 if (stream->async_wq)
459 destroy_workqueue(stream->async_wq);
460
461 mutex_destroy(&stream->mutex);
462
463 usb_put_intf(stream->intf);
464
465 kfree(stream->format);
466 kfree(stream->header.bmaControls);
467 kfree(stream);
468 }
469
uvc_stream_new(struct uvc_device * dev,struct usb_interface * intf)470 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
471 struct usb_interface *intf)
472 {
473 struct uvc_streaming *stream;
474
475 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
476 if (stream == NULL)
477 return NULL;
478
479 mutex_init(&stream->mutex);
480
481 stream->dev = dev;
482 stream->intf = usb_get_intf(intf);
483 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
484
485 /* Allocate a stream specific work queue for asynchronous tasks. */
486 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
487 0);
488 if (!stream->async_wq) {
489 uvc_stream_delete(stream);
490 return NULL;
491 }
492
493 return stream;
494 }
495
496 /* ------------------------------------------------------------------------
497 * Descriptors parsing
498 */
499
uvc_parse_format(struct uvc_device * dev,struct uvc_streaming * streaming,struct uvc_format * format,u32 ** intervals,unsigned char * buffer,int buflen)500 static int uvc_parse_format(struct uvc_device *dev,
501 struct uvc_streaming *streaming, struct uvc_format *format,
502 u32 **intervals, unsigned char *buffer, int buflen)
503 {
504 struct usb_interface *intf = streaming->intf;
505 struct usb_host_interface *alts = intf->cur_altsetting;
506 struct uvc_format_desc *fmtdesc;
507 struct uvc_frame *frame;
508 const unsigned char *start = buffer;
509 unsigned int width_multiplier = 1;
510 unsigned int interval;
511 unsigned int i, n;
512 u8 ftype;
513
514 format->type = buffer[2];
515 format->index = buffer[3];
516
517 switch (buffer[2]) {
518 case UVC_VS_FORMAT_UNCOMPRESSED:
519 case UVC_VS_FORMAT_FRAME_BASED:
520 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
521 if (buflen < n) {
522 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
523 "interface %d FORMAT error\n",
524 dev->udev->devnum,
525 alts->desc.bInterfaceNumber);
526 return -EINVAL;
527 }
528
529 /* Find the format descriptor from its GUID. */
530 fmtdesc = uvc_format_by_guid(&buffer[5]);
531
532 if (fmtdesc != NULL) {
533 strscpy(format->name, fmtdesc->name,
534 sizeof(format->name));
535 format->fcc = fmtdesc->fcc;
536 } else {
537 uvc_printk(KERN_INFO, "Unknown video format %pUl\n",
538 &buffer[5]);
539 snprintf(format->name, sizeof(format->name), "%pUl\n",
540 &buffer[5]);
541 format->fcc = 0;
542 }
543
544 format->bpp = buffer[21];
545
546 /* Some devices report a format that doesn't match what they
547 * really send.
548 */
549 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
550 if (format->fcc == V4L2_PIX_FMT_YUYV) {
551 strscpy(format->name, "Greyscale 8-bit (Y8 )",
552 sizeof(format->name));
553 format->fcc = V4L2_PIX_FMT_GREY;
554 format->bpp = 8;
555 width_multiplier = 2;
556 }
557 }
558
559 /* Some devices report bpp that doesn't match the format. */
560 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
561 const struct v4l2_format_info *info =
562 v4l2_format_info(format->fcc);
563
564 if (info) {
565 unsigned int div = info->hdiv * info->vdiv;
566
567 n = info->bpp[0] * div;
568 for (i = 1; i < info->comp_planes; i++)
569 n += info->bpp[i];
570
571 format->bpp = DIV_ROUND_UP(8 * n, div);
572 }
573 }
574
575 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
576 ftype = UVC_VS_FRAME_UNCOMPRESSED;
577 } else {
578 ftype = UVC_VS_FRAME_FRAME_BASED;
579 if (buffer[27])
580 format->flags = UVC_FMT_FLAG_COMPRESSED;
581 }
582 break;
583
584 case UVC_VS_FORMAT_MJPEG:
585 if (buflen < 11) {
586 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
587 "interface %d FORMAT error\n",
588 dev->udev->devnum,
589 alts->desc.bInterfaceNumber);
590 return -EINVAL;
591 }
592
593 strscpy(format->name, "MJPEG", sizeof(format->name));
594 format->fcc = V4L2_PIX_FMT_MJPEG;
595 format->flags = UVC_FMT_FLAG_COMPRESSED;
596 format->bpp = 0;
597 ftype = UVC_VS_FRAME_MJPEG;
598 break;
599
600 case UVC_VS_FORMAT_DV:
601 if (buflen < 9) {
602 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
603 "interface %d FORMAT error\n",
604 dev->udev->devnum,
605 alts->desc.bInterfaceNumber);
606 return -EINVAL;
607 }
608
609 switch (buffer[8] & 0x7f) {
610 case 0:
611 strscpy(format->name, "SD-DV", sizeof(format->name));
612 break;
613 case 1:
614 strscpy(format->name, "SDL-DV", sizeof(format->name));
615 break;
616 case 2:
617 strscpy(format->name, "HD-DV", sizeof(format->name));
618 break;
619 default:
620 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
621 "interface %d: unknown DV format %u\n",
622 dev->udev->devnum,
623 alts->desc.bInterfaceNumber, buffer[8]);
624 return -EINVAL;
625 }
626
627 strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz",
628 sizeof(format->name));
629
630 format->fcc = V4L2_PIX_FMT_DV;
631 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
632 format->bpp = 0;
633 ftype = 0;
634
635 /* Create a dummy frame descriptor. */
636 frame = &format->frame[0];
637 memset(&format->frame[0], 0, sizeof(format->frame[0]));
638 frame->bFrameIntervalType = 1;
639 frame->dwDefaultFrameInterval = 1;
640 frame->dwFrameInterval = *intervals;
641 *(*intervals)++ = 1;
642 format->nframes = 1;
643 break;
644
645 case UVC_VS_FORMAT_MPEG2TS:
646 case UVC_VS_FORMAT_STREAM_BASED:
647 /* Not supported yet. */
648 default:
649 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
650 "interface %d unsupported format %u\n",
651 dev->udev->devnum, alts->desc.bInterfaceNumber,
652 buffer[2]);
653 return -EINVAL;
654 }
655
656 uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
657
658 buflen -= buffer[0];
659 buffer += buffer[0];
660
661 /* Parse the frame descriptors. Only uncompressed, MJPEG and frame
662 * based formats have frame descriptors.
663 */
664 while (ftype && buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
665 buffer[2] == ftype) {
666 frame = &format->frame[format->nframes];
667 if (ftype != UVC_VS_FRAME_FRAME_BASED)
668 n = buflen > 25 ? buffer[25] : 0;
669 else
670 n = buflen > 21 ? buffer[21] : 0;
671
672 n = n ? n : 3;
673
674 if (buflen < 26 + 4*n) {
675 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
676 "interface %d FRAME error\n", dev->udev->devnum,
677 alts->desc.bInterfaceNumber);
678 return -EINVAL;
679 }
680
681 frame->bFrameIndex = buffer[3];
682 frame->bmCapabilities = buffer[4];
683 frame->wWidth = get_unaligned_le16(&buffer[5])
684 * width_multiplier;
685 frame->wHeight = get_unaligned_le16(&buffer[7]);
686 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
687 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
688 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
689 frame->dwMaxVideoFrameBufferSize =
690 get_unaligned_le32(&buffer[17]);
691 frame->dwDefaultFrameInterval =
692 get_unaligned_le32(&buffer[21]);
693 frame->bFrameIntervalType = buffer[25];
694 } else {
695 frame->dwMaxVideoFrameBufferSize = 0;
696 frame->dwDefaultFrameInterval =
697 get_unaligned_le32(&buffer[17]);
698 frame->bFrameIntervalType = buffer[21];
699 }
700 frame->dwFrameInterval = *intervals;
701
702 /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize
703 * completely. Observed behaviours range from setting the
704 * value to 1.1x the actual frame size to hardwiring the
705 * 16 low bits to 0. This results in a higher than necessary
706 * memory usage as well as a wrong image size information. For
707 * uncompressed formats this can be fixed by computing the
708 * value from the frame size.
709 */
710 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
711 frame->dwMaxVideoFrameBufferSize = format->bpp
712 * frame->wWidth * frame->wHeight / 8;
713
714 /* Some bogus devices report dwMinFrameInterval equal to
715 * dwMaxFrameInterval and have dwFrameIntervalStep set to
716 * zero. Setting all null intervals to 1 fixes the problem and
717 * some other divisions by zero that could happen.
718 */
719 for (i = 0; i < n; ++i) {
720 interval = get_unaligned_le32(&buffer[26+4*i]);
721 *(*intervals)++ = interval ? interval : 1;
722 }
723
724 /* Make sure that the default frame interval stays between
725 * the boundaries.
726 */
727 n -= frame->bFrameIntervalType ? 1 : 2;
728 frame->dwDefaultFrameInterval =
729 min(frame->dwFrameInterval[n],
730 max(frame->dwFrameInterval[0],
731 frame->dwDefaultFrameInterval));
732
733 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
734 frame->bFrameIntervalType = 1;
735 frame->dwFrameInterval[0] =
736 frame->dwDefaultFrameInterval;
737 }
738
739 uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
740 frame->wWidth, frame->wHeight,
741 10000000/frame->dwDefaultFrameInterval,
742 (100000000/frame->dwDefaultFrameInterval)%10);
743
744 format->nframes++;
745 buflen -= buffer[0];
746 buffer += buffer[0];
747 }
748
749 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
750 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
751 buflen -= buffer[0];
752 buffer += buffer[0];
753 }
754
755 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
756 buffer[2] == UVC_VS_COLORFORMAT) {
757 if (buflen < 6) {
758 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
759 "interface %d COLORFORMAT error\n",
760 dev->udev->devnum,
761 alts->desc.bInterfaceNumber);
762 return -EINVAL;
763 }
764
765 format->colorspace = uvc_colorspace(buffer[3]);
766 format->xfer_func = uvc_xfer_func(buffer[4]);
767 format->ycbcr_enc = uvc_ycbcr_enc(buffer[5]);
768
769 buflen -= buffer[0];
770 buffer += buffer[0];
771 }
772
773 return buffer - start;
774 }
775
uvc_parse_streaming(struct uvc_device * dev,struct usb_interface * intf)776 static int uvc_parse_streaming(struct uvc_device *dev,
777 struct usb_interface *intf)
778 {
779 struct uvc_streaming *streaming = NULL;
780 struct uvc_format *format;
781 struct uvc_frame *frame;
782 struct usb_host_interface *alts = &intf->altsetting[0];
783 unsigned char *_buffer, *buffer = alts->extra;
784 int _buflen, buflen = alts->extralen;
785 unsigned int nformats = 0, nframes = 0, nintervals = 0;
786 unsigned int size, i, n, p;
787 u32 *interval;
788 u16 psize;
789 int ret = -EINVAL;
790
791 if (intf->cur_altsetting->desc.bInterfaceSubClass
792 != UVC_SC_VIDEOSTREAMING) {
793 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
794 "video streaming interface\n", dev->udev->devnum,
795 intf->altsetting[0].desc.bInterfaceNumber);
796 return -EINVAL;
797 }
798
799 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
800 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
801 "claimed\n", dev->udev->devnum,
802 intf->altsetting[0].desc.bInterfaceNumber);
803 return -EINVAL;
804 }
805
806 streaming = uvc_stream_new(dev, intf);
807 if (streaming == NULL) {
808 usb_driver_release_interface(&uvc_driver.driver, intf);
809 return -ENOMEM;
810 }
811
812 /* The Pico iMage webcam has its class-specific interface descriptors
813 * after the endpoint descriptors.
814 */
815 if (buflen == 0) {
816 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
817 struct usb_host_endpoint *ep = &alts->endpoint[i];
818
819 if (ep->extralen == 0)
820 continue;
821
822 if (ep->extralen > 2 &&
823 ep->extra[1] == USB_DT_CS_INTERFACE) {
824 uvc_trace(UVC_TRACE_DESCR, "trying extra data "
825 "from endpoint %u.\n", i);
826 buffer = alts->endpoint[i].extra;
827 buflen = alts->endpoint[i].extralen;
828 break;
829 }
830 }
831 }
832
833 /* Skip the standard interface descriptors. */
834 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
835 buflen -= buffer[0];
836 buffer += buffer[0];
837 }
838
839 if (buflen <= 2) {
840 uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
841 "interface descriptors found.\n");
842 goto error;
843 }
844
845 /* Parse the header descriptor. */
846 switch (buffer[2]) {
847 case UVC_VS_OUTPUT_HEADER:
848 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
849 size = 9;
850 break;
851
852 case UVC_VS_INPUT_HEADER:
853 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
854 size = 13;
855 break;
856
857 default:
858 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
859 "%d HEADER descriptor not found.\n", dev->udev->devnum,
860 alts->desc.bInterfaceNumber);
861 goto error;
862 }
863
864 p = buflen >= 4 ? buffer[3] : 0;
865 n = buflen >= size ? buffer[size-1] : 0;
866
867 if (buflen < size + p*n) {
868 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
869 "interface %d HEADER descriptor is invalid.\n",
870 dev->udev->devnum, alts->desc.bInterfaceNumber);
871 goto error;
872 }
873
874 streaming->header.bNumFormats = p;
875 streaming->header.bEndpointAddress = buffer[6];
876 if (buffer[2] == UVC_VS_INPUT_HEADER) {
877 streaming->header.bmInfo = buffer[7];
878 streaming->header.bTerminalLink = buffer[8];
879 streaming->header.bStillCaptureMethod = buffer[9];
880 streaming->header.bTriggerSupport = buffer[10];
881 streaming->header.bTriggerUsage = buffer[11];
882 } else {
883 streaming->header.bTerminalLink = buffer[7];
884 }
885 streaming->header.bControlSize = n;
886
887 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
888 GFP_KERNEL);
889 if (streaming->header.bmaControls == NULL) {
890 ret = -ENOMEM;
891 goto error;
892 }
893
894 buflen -= buffer[0];
895 buffer += buffer[0];
896
897 _buffer = buffer;
898 _buflen = buflen;
899
900 /* Count the format and frame descriptors. */
901 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
902 switch (_buffer[2]) {
903 case UVC_VS_FORMAT_UNCOMPRESSED:
904 case UVC_VS_FORMAT_MJPEG:
905 case UVC_VS_FORMAT_FRAME_BASED:
906 nformats++;
907 break;
908
909 case UVC_VS_FORMAT_DV:
910 /* DV format has no frame descriptor. We will create a
911 * dummy frame descriptor with a dummy frame interval.
912 */
913 nformats++;
914 nframes++;
915 nintervals++;
916 break;
917
918 case UVC_VS_FORMAT_MPEG2TS:
919 case UVC_VS_FORMAT_STREAM_BASED:
920 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
921 "interface %d FORMAT %u is not supported.\n",
922 dev->udev->devnum,
923 alts->desc.bInterfaceNumber, _buffer[2]);
924 break;
925
926 case UVC_VS_FRAME_UNCOMPRESSED:
927 case UVC_VS_FRAME_MJPEG:
928 nframes++;
929 if (_buflen > 25)
930 nintervals += _buffer[25] ? _buffer[25] : 3;
931 break;
932
933 case UVC_VS_FRAME_FRAME_BASED:
934 nframes++;
935 if (_buflen > 21)
936 nintervals += _buffer[21] ? _buffer[21] : 3;
937 break;
938 }
939
940 _buflen -= _buffer[0];
941 _buffer += _buffer[0];
942 }
943
944 if (nformats == 0) {
945 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
946 "%d has no supported formats defined.\n",
947 dev->udev->devnum, alts->desc.bInterfaceNumber);
948 goto error;
949 }
950
951 size = nformats * sizeof(*format) + nframes * sizeof(*frame)
952 + nintervals * sizeof(*interval);
953 format = kzalloc(size, GFP_KERNEL);
954 if (format == NULL) {
955 ret = -ENOMEM;
956 goto error;
957 }
958
959 frame = (struct uvc_frame *)&format[nformats];
960 interval = (u32 *)&frame[nframes];
961
962 streaming->format = format;
963 streaming->nformats = nformats;
964
965 /* Parse the format descriptors. */
966 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
967 switch (buffer[2]) {
968 case UVC_VS_FORMAT_UNCOMPRESSED:
969 case UVC_VS_FORMAT_MJPEG:
970 case UVC_VS_FORMAT_DV:
971 case UVC_VS_FORMAT_FRAME_BASED:
972 format->frame = frame;
973 ret = uvc_parse_format(dev, streaming, format,
974 &interval, buffer, buflen);
975 if (ret < 0)
976 goto error;
977
978 frame += format->nframes;
979 format++;
980
981 buflen -= ret;
982 buffer += ret;
983 continue;
984
985 default:
986 break;
987 }
988
989 buflen -= buffer[0];
990 buffer += buffer[0];
991 }
992
993 if (buflen)
994 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
995 "%d has %u bytes of trailing descriptor garbage.\n",
996 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
997
998 /* Parse the alternate settings to find the maximum bandwidth. */
999 for (i = 0; i < intf->num_altsetting; ++i) {
1000 struct usb_host_endpoint *ep;
1001 alts = &intf->altsetting[i];
1002 ep = uvc_find_endpoint(alts,
1003 streaming->header.bEndpointAddress);
1004 if (ep == NULL)
1005 continue;
1006
1007 psize = le16_to_cpu(ep->desc.wMaxPacketSize);
1008 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
1009 if (psize > streaming->maxpsize)
1010 streaming->maxpsize = psize;
1011 }
1012
1013 list_add_tail(&streaming->list, &dev->streams);
1014 return 0;
1015
1016 error:
1017 usb_driver_release_interface(&uvc_driver.driver, intf);
1018 uvc_stream_delete(streaming);
1019 return ret;
1020 }
1021
uvc_alloc_new_entity(struct uvc_device * dev,u16 type,u16 id,unsigned int num_pads,unsigned int extra_size)1022 static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type,
1023 u16 id, unsigned int num_pads,
1024 unsigned int extra_size)
1025 {
1026 struct uvc_entity *entity;
1027 unsigned int num_inputs;
1028 unsigned int size;
1029 unsigned int i;
1030
1031 /* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */
1032 if (id == 0) {
1033 dev_err(&dev->udev->dev, "Found Unit with invalid ID 0.\n");
1034 return ERR_PTR(-EINVAL);
1035 }
1036
1037 /* Per UVC 1.1+ spec 3.7.2, the ID is unique. */
1038 if (uvc_entity_by_id(dev, id)) {
1039 dev_err(&dev->udev->dev, "Found multiple Units with ID %u\n", id);
1040 return ERR_PTR(-EINVAL);
1041 }
1042
1043 extra_size = roundup(extra_size, sizeof(*entity->pads));
1044 if (num_pads)
1045 num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
1046 else
1047 num_inputs = 0;
1048 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
1049 + num_inputs;
1050 entity = kzalloc(size, GFP_KERNEL);
1051 if (entity == NULL)
1052 return ERR_PTR(-ENOMEM);
1053
1054 entity->id = id;
1055 entity->type = type;
1056
1057 entity->num_links = 0;
1058 entity->num_pads = num_pads;
1059 entity->pads = ((void *)(entity + 1)) + extra_size;
1060
1061 for (i = 0; i < num_inputs; ++i)
1062 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
1063 if (!UVC_ENTITY_IS_OTERM(entity) && num_pads)
1064 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
1065
1066 entity->bNrInPins = num_inputs;
1067 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
1068
1069 return entity;
1070 }
1071
1072 /* Parse vendor-specific extensions. */
uvc_parse_vendor_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)1073 static int uvc_parse_vendor_control(struct uvc_device *dev,
1074 const unsigned char *buffer, int buflen)
1075 {
1076 struct usb_device *udev = dev->udev;
1077 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1078 struct uvc_entity *unit;
1079 unsigned int n, p;
1080 int handled = 0;
1081
1082 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
1083 case 0x046d: /* Logitech */
1084 if (buffer[1] != 0x41 || buffer[2] != 0x01)
1085 break;
1086
1087 /* Logitech implements several vendor specific functions
1088 * through vendor specific extension units (LXU).
1089 *
1090 * The LXU descriptors are similar to XU descriptors
1091 * (see "USB Device Video Class for Video Devices", section
1092 * 3.7.2.6 "Extension Unit Descriptor") with the following
1093 * differences:
1094 *
1095 * ----------------------------------------------------------
1096 * 0 bLength 1 Number
1097 * Size of this descriptor, in bytes: 24+p+n*2
1098 * ----------------------------------------------------------
1099 * 23+p+n bmControlsType N Bitmap
1100 * Individual bits in the set are defined:
1101 * 0: Absolute
1102 * 1: Relative
1103 *
1104 * This bitset is mapped exactly the same as bmControls.
1105 * ----------------------------------------------------------
1106 * 23+p+n*2 bReserved 1 Boolean
1107 * ----------------------------------------------------------
1108 * 24+p+n*2 iExtension 1 Index
1109 * Index of a string descriptor that describes this
1110 * extension unit.
1111 * ----------------------------------------------------------
1112 */
1113 p = buflen >= 22 ? buffer[21] : 0;
1114 n = buflen >= 25 + p ? buffer[22+p] : 0;
1115
1116 if (buflen < 25 + p + 2*n) {
1117 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1118 "interface %d EXTENSION_UNIT error\n",
1119 udev->devnum, alts->desc.bInterfaceNumber);
1120 break;
1121 }
1122
1123 unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT,
1124 buffer[3], p + 1, 2 * n);
1125 if (IS_ERR(unit))
1126 return PTR_ERR(unit);
1127
1128 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
1129 unit->extension.bNumControls = buffer[20];
1130 memcpy(unit->baSourceID, &buffer[22], p);
1131 unit->extension.bControlSize = buffer[22+p];
1132 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1133 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
1134 + n;
1135 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
1136
1137 if (buffer[24+p+2*n] == 0 ||
1138 usb_string(udev, buffer[24+p+2*n], unit->name, sizeof(unit->name)) < 0)
1139 sprintf(unit->name, "Extension %u", buffer[3]);
1140
1141 list_add_tail(&unit->list, &dev->entities);
1142 handled = 1;
1143 break;
1144 }
1145
1146 return handled;
1147 }
1148
uvc_parse_standard_control(struct uvc_device * dev,const unsigned char * buffer,int buflen)1149 static int uvc_parse_standard_control(struct uvc_device *dev,
1150 const unsigned char *buffer, int buflen)
1151 {
1152 struct usb_device *udev = dev->udev;
1153 struct uvc_entity *unit, *term;
1154 struct usb_interface *intf;
1155 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1156 unsigned int i, n, p, len;
1157 u16 type;
1158
1159 switch (buffer[2]) {
1160 case UVC_VC_HEADER:
1161 n = buflen >= 12 ? buffer[11] : 0;
1162
1163 if (buflen < 12 + n) {
1164 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1165 "interface %d HEADER error\n", udev->devnum,
1166 alts->desc.bInterfaceNumber);
1167 return -EINVAL;
1168 }
1169
1170 dev->uvc_version = get_unaligned_le16(&buffer[3]);
1171 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
1172
1173 /* Parse all USB Video Streaming interfaces. */
1174 for (i = 0; i < n; ++i) {
1175 intf = usb_ifnum_to_if(udev, buffer[12+i]);
1176 if (intf == NULL) {
1177 uvc_trace(UVC_TRACE_DESCR, "device %d "
1178 "interface %d doesn't exists\n",
1179 udev->devnum, i);
1180 continue;
1181 }
1182
1183 uvc_parse_streaming(dev, intf);
1184 }
1185 break;
1186
1187 case UVC_VC_INPUT_TERMINAL:
1188 if (buflen < 8) {
1189 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1190 "interface %d INPUT_TERMINAL error\n",
1191 udev->devnum, alts->desc.bInterfaceNumber);
1192 return -EINVAL;
1193 }
1194
1195 /*
1196 * Reject invalid terminal types that would cause issues:
1197 *
1198 * - The high byte must be non-zero, otherwise it would be
1199 * confused with a unit.
1200 *
1201 * - Bit 15 must be 0, as we use it internally as a terminal
1202 * direction flag.
1203 *
1204 * Other unknown types are accepted.
1205 */
1206 type = get_unaligned_le16(&buffer[4]);
1207 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
1208 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1209 "interface %d INPUT_TERMINAL %d has invalid "
1210 "type 0x%04x, skipping\n", udev->devnum,
1211 alts->desc.bInterfaceNumber,
1212 buffer[3], type);
1213 return 0;
1214 }
1215
1216 n = 0;
1217 p = 0;
1218 len = 8;
1219
1220 if (type == UVC_ITT_CAMERA) {
1221 n = buflen >= 15 ? buffer[14] : 0;
1222 len = 15;
1223
1224 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1225 n = buflen >= 9 ? buffer[8] : 0;
1226 p = buflen >= 10 + n ? buffer[9+n] : 0;
1227 len = 10;
1228 }
1229
1230 if (buflen < len + n + p) {
1231 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1232 "interface %d INPUT_TERMINAL error\n",
1233 udev->devnum, alts->desc.bInterfaceNumber);
1234 return -EINVAL;
1235 }
1236
1237 term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT,
1238 buffer[3], 1, n + p);
1239 if (IS_ERR(term))
1240 return PTR_ERR(term);
1241
1242 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1243 term->camera.bControlSize = n;
1244 term->camera.bmControls = (u8 *)term + sizeof(*term);
1245 term->camera.wObjectiveFocalLengthMin =
1246 get_unaligned_le16(&buffer[8]);
1247 term->camera.wObjectiveFocalLengthMax =
1248 get_unaligned_le16(&buffer[10]);
1249 term->camera.wOcularFocalLength =
1250 get_unaligned_le16(&buffer[12]);
1251 memcpy(term->camera.bmControls, &buffer[15], n);
1252 } else if (UVC_ENTITY_TYPE(term) ==
1253 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1254 term->media.bControlSize = n;
1255 term->media.bmControls = (u8 *)term + sizeof(*term);
1256 term->media.bTransportModeSize = p;
1257 term->media.bmTransportModes = (u8 *)term
1258 + sizeof(*term) + n;
1259 memcpy(term->media.bmControls, &buffer[9], n);
1260 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1261 }
1262
1263 if (buffer[7] == 0 ||
1264 usb_string(udev, buffer[7], term->name, sizeof(term->name)) < 0) {
1265 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1266 sprintf(term->name, "Camera %u", buffer[3]);
1267 if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1268 sprintf(term->name, "Media %u", buffer[3]);
1269 else
1270 sprintf(term->name, "Input %u", buffer[3]);
1271 }
1272
1273 list_add_tail(&term->list, &dev->entities);
1274 break;
1275
1276 case UVC_VC_OUTPUT_TERMINAL:
1277 if (buflen < 9) {
1278 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1279 "interface %d OUTPUT_TERMINAL error\n",
1280 udev->devnum, alts->desc.bInterfaceNumber);
1281 return -EINVAL;
1282 }
1283
1284 /* Make sure the terminal type MSB is not null, otherwise it
1285 * could be confused with a unit.
1286 */
1287 type = get_unaligned_le16(&buffer[4]);
1288 if ((type & 0xff00) == 0) {
1289 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1290 "interface %d OUTPUT_TERMINAL %d has invalid "
1291 "type 0x%04x, skipping\n", udev->devnum,
1292 alts->desc.bInterfaceNumber, buffer[3], type);
1293 return 0;
1294 }
1295
1296 term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT,
1297 buffer[3], 1, 0);
1298 if (IS_ERR(term))
1299 return PTR_ERR(term);
1300
1301 memcpy(term->baSourceID, &buffer[7], 1);
1302
1303 if (buffer[8] == 0 ||
1304 usb_string(udev, buffer[8], term->name, sizeof(term->name)) < 0)
1305 sprintf(term->name, "Output %u", buffer[3]);
1306
1307 list_add_tail(&term->list, &dev->entities);
1308 break;
1309
1310 case UVC_VC_SELECTOR_UNIT:
1311 p = buflen >= 5 ? buffer[4] : 0;
1312
1313 if (buflen < 5 || buflen < 6 + p) {
1314 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1315 "interface %d SELECTOR_UNIT error\n",
1316 udev->devnum, alts->desc.bInterfaceNumber);
1317 return -EINVAL;
1318 }
1319
1320 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
1321 p + 1, 0);
1322 if (IS_ERR(unit))
1323 return PTR_ERR(unit);
1324
1325 memcpy(unit->baSourceID, &buffer[5], p);
1326
1327 if (buffer[5+p] == 0 ||
1328 usb_string(udev, buffer[5+p], unit->name, sizeof(unit->name)) < 0)
1329 sprintf(unit->name, "Selector %u", buffer[3]);
1330
1331 list_add_tail(&unit->list, &dev->entities);
1332 break;
1333
1334 case UVC_VC_PROCESSING_UNIT:
1335 n = buflen >= 8 ? buffer[7] : 0;
1336 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1337
1338 if (buflen < p + n) {
1339 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1340 "interface %d PROCESSING_UNIT error\n",
1341 udev->devnum, alts->desc.bInterfaceNumber);
1342 return -EINVAL;
1343 }
1344
1345 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n);
1346 if (IS_ERR(unit))
1347 return PTR_ERR(unit);
1348
1349 memcpy(unit->baSourceID, &buffer[4], 1);
1350 unit->processing.wMaxMultiplier =
1351 get_unaligned_le16(&buffer[5]);
1352 unit->processing.bControlSize = buffer[7];
1353 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1354 memcpy(unit->processing.bmControls, &buffer[8], n);
1355 if (dev->uvc_version >= 0x0110)
1356 unit->processing.bmVideoStandards = buffer[9+n];
1357
1358 if (buffer[8+n] == 0 ||
1359 usb_string(udev, buffer[8+n], unit->name, sizeof(unit->name)) < 0)
1360 sprintf(unit->name, "Processing %u", buffer[3]);
1361
1362 list_add_tail(&unit->list, &dev->entities);
1363 break;
1364
1365 case UVC_VC_EXTENSION_UNIT:
1366 p = buflen >= 22 ? buffer[21] : 0;
1367 n = buflen >= 24 + p ? buffer[22+p] : 0;
1368
1369 if (buflen < 24 + p + n) {
1370 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1371 "interface %d EXTENSION_UNIT error\n",
1372 udev->devnum, alts->desc.bInterfaceNumber);
1373 return -EINVAL;
1374 }
1375
1376 unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
1377 p + 1, n);
1378 if (IS_ERR(unit))
1379 return PTR_ERR(unit);
1380
1381 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
1382 unit->extension.bNumControls = buffer[20];
1383 memcpy(unit->baSourceID, &buffer[22], p);
1384 unit->extension.bControlSize = buffer[22+p];
1385 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1386 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1387
1388 if (buffer[23+p+n] == 0 ||
1389 usb_string(udev, buffer[23+p+n], unit->name, sizeof(unit->name)) < 0)
1390 sprintf(unit->name, "Extension %u", buffer[3]);
1391
1392 list_add_tail(&unit->list, &dev->entities);
1393 break;
1394
1395 default:
1396 uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
1397 "descriptor (%u)\n", buffer[2]);
1398 break;
1399 }
1400
1401 return 0;
1402 }
1403
uvc_parse_control(struct uvc_device * dev)1404 static int uvc_parse_control(struct uvc_device *dev)
1405 {
1406 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1407 unsigned char *buffer = alts->extra;
1408 int buflen = alts->extralen;
1409 int ret;
1410
1411 /* Parse the default alternate setting only, as the UVC specification
1412 * defines a single alternate setting, the default alternate setting
1413 * zero.
1414 */
1415
1416 while (buflen > 2) {
1417 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1418 buffer[1] != USB_DT_CS_INTERFACE)
1419 goto next_descriptor;
1420
1421 if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0)
1422 return ret;
1423
1424 next_descriptor:
1425 buflen -= buffer[0];
1426 buffer += buffer[0];
1427 }
1428
1429 /* Check if the optional status endpoint is present. Built-in iSight
1430 * webcams have an interrupt endpoint but spit proprietary data that
1431 * don't conform to the UVC status endpoint messages. Don't try to
1432 * handle the interrupt endpoint for those cameras.
1433 */
1434 if (alts->desc.bNumEndpoints == 1 &&
1435 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1436 struct usb_host_endpoint *ep = &alts->endpoint[0];
1437 struct usb_endpoint_descriptor *desc = &ep->desc;
1438
1439 if (usb_endpoint_is_int_in(desc) &&
1440 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1441 desc->bInterval != 0) {
1442 uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
1443 "(addr %02x).\n", desc->bEndpointAddress);
1444 dev->int_ep = ep;
1445 }
1446 }
1447
1448 return 0;
1449 }
1450
1451 /* ------------------------------------------------------------------------
1452 * UVC device scan
1453 */
1454
1455 /*
1456 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1457 * and containing the following units:
1458 *
1459 * - one or more Output Terminals (USB Streaming or Display)
1460 * - zero or one Processing Unit
1461 * - zero, one or more single-input Selector Units
1462 * - zero or one multiple-input Selector Units, provided all inputs are
1463 * connected to input terminals
1464 * - zero, one or mode single-input Extension Units
1465 * - one or more Input Terminals (Camera, External or USB Streaming)
1466 *
1467 * The terminal and units must match on of the following structures:
1468 *
1469 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1470 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1471 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1472 *
1473 * +---------+ +---------+ -> OTT_*(0)
1474 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1475 * +---------+ +---------+ -> OTT_*(n)
1476 *
1477 * The Processing Unit and Extension Units can be in any order. Additional
1478 * Extension Units connected to the main chain as single-unit branches are
1479 * also supported. Single-input Selector Units are ignored.
1480 */
uvc_scan_chain_entity(struct uvc_video_chain * chain,struct uvc_entity * entity)1481 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1482 struct uvc_entity *entity)
1483 {
1484 switch (UVC_ENTITY_TYPE(entity)) {
1485 case UVC_VC_EXTENSION_UNIT:
1486 if (uvc_trace_param & UVC_TRACE_PROBE)
1487 printk(KERN_CONT " <- XU %d", entity->id);
1488
1489 if (entity->bNrInPins != 1) {
1490 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
1491 "than 1 input pin.\n", entity->id);
1492 return -1;
1493 }
1494
1495 break;
1496
1497 case UVC_VC_PROCESSING_UNIT:
1498 if (uvc_trace_param & UVC_TRACE_PROBE)
1499 printk(KERN_CONT " <- PU %d", entity->id);
1500
1501 if (chain->processing != NULL) {
1502 uvc_trace(UVC_TRACE_DESCR, "Found multiple "
1503 "Processing Units in chain.\n");
1504 return -1;
1505 }
1506
1507 chain->processing = entity;
1508 break;
1509
1510 case UVC_VC_SELECTOR_UNIT:
1511 if (uvc_trace_param & UVC_TRACE_PROBE)
1512 printk(KERN_CONT " <- SU %d", entity->id);
1513
1514 /* Single-input selector units are ignored. */
1515 if (entity->bNrInPins == 1)
1516 break;
1517
1518 if (chain->selector != NULL) {
1519 uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
1520 "Units in chain.\n");
1521 return -1;
1522 }
1523
1524 chain->selector = entity;
1525 break;
1526
1527 case UVC_ITT_VENDOR_SPECIFIC:
1528 case UVC_ITT_CAMERA:
1529 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1530 if (uvc_trace_param & UVC_TRACE_PROBE)
1531 printk(KERN_CONT " <- IT %d\n", entity->id);
1532
1533 break;
1534
1535 case UVC_OTT_VENDOR_SPECIFIC:
1536 case UVC_OTT_DISPLAY:
1537 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1538 if (uvc_trace_param & UVC_TRACE_PROBE)
1539 printk(KERN_CONT " OT %d", entity->id);
1540
1541 break;
1542
1543 case UVC_TT_STREAMING:
1544 if (UVC_ENTITY_IS_ITERM(entity)) {
1545 if (uvc_trace_param & UVC_TRACE_PROBE)
1546 printk(KERN_CONT " <- IT %d\n", entity->id);
1547 } else {
1548 if (uvc_trace_param & UVC_TRACE_PROBE)
1549 printk(KERN_CONT " OT %d", entity->id);
1550 }
1551
1552 break;
1553
1554 default:
1555 uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
1556 "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
1557 return -1;
1558 }
1559
1560 list_add_tail(&entity->chain, &chain->entities);
1561 return 0;
1562 }
1563
uvc_scan_chain_forward(struct uvc_video_chain * chain,struct uvc_entity * entity,struct uvc_entity * prev)1564 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1565 struct uvc_entity *entity, struct uvc_entity *prev)
1566 {
1567 struct uvc_entity *forward;
1568 int found;
1569
1570 /* Forward scan */
1571 forward = NULL;
1572 found = 0;
1573
1574 while (1) {
1575 forward = uvc_entity_by_reference(chain->dev, entity->id,
1576 forward);
1577 if (forward == NULL)
1578 break;
1579 if (forward == prev)
1580 continue;
1581 if (forward->chain.next || forward->chain.prev) {
1582 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1583 "entity %d already in chain.\n", forward->id);
1584 return -EINVAL;
1585 }
1586
1587 switch (UVC_ENTITY_TYPE(forward)) {
1588 case UVC_VC_EXTENSION_UNIT:
1589 if (forward->bNrInPins != 1) {
1590 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d "
1591 "has more than 1 input pin.\n",
1592 entity->id);
1593 return -EINVAL;
1594 }
1595
1596 /*
1597 * Some devices reference an output terminal as the
1598 * source of extension units. This is incorrect, as
1599 * output terminals only have an input pin, and thus
1600 * can't be connected to any entity in the forward
1601 * direction. The resulting topology would cause issues
1602 * when registering the media controller graph. To
1603 * avoid this problem, connect the extension unit to
1604 * the source of the output terminal instead.
1605 */
1606 if (UVC_ENTITY_IS_OTERM(entity)) {
1607 struct uvc_entity *source;
1608
1609 source = uvc_entity_by_id(chain->dev,
1610 entity->baSourceID[0]);
1611 if (!source) {
1612 uvc_trace(UVC_TRACE_DESCR,
1613 "Can't connect extension unit %u in chain\n",
1614 forward->id);
1615 break;
1616 }
1617
1618 forward->baSourceID[0] = source->id;
1619 }
1620
1621 list_add_tail(&forward->chain, &chain->entities);
1622 if (uvc_trace_param & UVC_TRACE_PROBE) {
1623 if (!found)
1624 printk(KERN_CONT " (->");
1625
1626 printk(KERN_CONT " XU %d", forward->id);
1627 found = 1;
1628 }
1629 break;
1630
1631 case UVC_OTT_VENDOR_SPECIFIC:
1632 case UVC_OTT_DISPLAY:
1633 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1634 case UVC_TT_STREAMING:
1635 if (UVC_ENTITY_IS_ITERM(forward)) {
1636 uvc_trace(UVC_TRACE_DESCR, "Unsupported input "
1637 "terminal %u.\n", forward->id);
1638 return -EINVAL;
1639 }
1640
1641 if (UVC_ENTITY_IS_OTERM(entity)) {
1642 uvc_trace(UVC_TRACE_DESCR,
1643 "Unsupported connection between output terminals %u and %u\n",
1644 entity->id, forward->id);
1645 break;
1646 }
1647
1648 list_add_tail(&forward->chain, &chain->entities);
1649 if (uvc_trace_param & UVC_TRACE_PROBE) {
1650 if (!found)
1651 printk(KERN_CONT " (->");
1652
1653 printk(KERN_CONT " OT %d", forward->id);
1654 found = 1;
1655 }
1656 break;
1657 }
1658 }
1659 if (found)
1660 printk(KERN_CONT ")");
1661
1662 return 0;
1663 }
1664
uvc_scan_chain_backward(struct uvc_video_chain * chain,struct uvc_entity ** _entity)1665 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1666 struct uvc_entity **_entity)
1667 {
1668 struct uvc_entity *entity = *_entity;
1669 struct uvc_entity *term;
1670 int id = -EINVAL, i;
1671
1672 switch (UVC_ENTITY_TYPE(entity)) {
1673 case UVC_VC_EXTENSION_UNIT:
1674 case UVC_VC_PROCESSING_UNIT:
1675 id = entity->baSourceID[0];
1676 break;
1677
1678 case UVC_VC_SELECTOR_UNIT:
1679 /* Single-input selector units are ignored. */
1680 if (entity->bNrInPins == 1) {
1681 id = entity->baSourceID[0];
1682 break;
1683 }
1684
1685 if (uvc_trace_param & UVC_TRACE_PROBE)
1686 printk(KERN_CONT " <- IT");
1687
1688 chain->selector = entity;
1689 for (i = 0; i < entity->bNrInPins; ++i) {
1690 id = entity->baSourceID[i];
1691 term = uvc_entity_by_id(chain->dev, id);
1692 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1693 uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
1694 "input %d isn't connected to an "
1695 "input terminal\n", entity->id, i);
1696 return -1;
1697 }
1698
1699 if (term->chain.next || term->chain.prev) {
1700 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1701 "entity %d already in chain.\n",
1702 term->id);
1703 return -EINVAL;
1704 }
1705
1706 if (uvc_trace_param & UVC_TRACE_PROBE)
1707 printk(KERN_CONT " %d", term->id);
1708
1709 list_add_tail(&term->chain, &chain->entities);
1710 uvc_scan_chain_forward(chain, term, entity);
1711 }
1712
1713 if (uvc_trace_param & UVC_TRACE_PROBE)
1714 printk(KERN_CONT "\n");
1715
1716 id = 0;
1717 break;
1718
1719 case UVC_ITT_VENDOR_SPECIFIC:
1720 case UVC_ITT_CAMERA:
1721 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1722 case UVC_OTT_VENDOR_SPECIFIC:
1723 case UVC_OTT_DISPLAY:
1724 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1725 case UVC_TT_STREAMING:
1726 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1727 break;
1728 }
1729
1730 if (id <= 0) {
1731 *_entity = NULL;
1732 return id;
1733 }
1734
1735 entity = uvc_entity_by_id(chain->dev, id);
1736 if (entity == NULL) {
1737 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1738 "unknown entity %d.\n", id);
1739 return -EINVAL;
1740 }
1741
1742 *_entity = entity;
1743 return 0;
1744 }
1745
uvc_scan_chain(struct uvc_video_chain * chain,struct uvc_entity * term)1746 static int uvc_scan_chain(struct uvc_video_chain *chain,
1747 struct uvc_entity *term)
1748 {
1749 struct uvc_entity *entity, *prev;
1750
1751 uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:");
1752
1753 entity = term;
1754 prev = NULL;
1755
1756 while (entity != NULL) {
1757 /* Entity must not be part of an existing chain */
1758 if (entity->chain.next || entity->chain.prev) {
1759 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1760 "entity %d already in chain.\n", entity->id);
1761 return -EINVAL;
1762 }
1763
1764 /* Process entity */
1765 if (uvc_scan_chain_entity(chain, entity) < 0)
1766 return -EINVAL;
1767
1768 /* Forward scan */
1769 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1770 return -EINVAL;
1771
1772 /* Backward scan */
1773 prev = entity;
1774 if (uvc_scan_chain_backward(chain, &entity) < 0)
1775 return -EINVAL;
1776 }
1777
1778 return 0;
1779 }
1780
uvc_print_terms(struct list_head * terms,u16 dir,char * buffer)1781 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1782 char *buffer)
1783 {
1784 struct uvc_entity *term;
1785 unsigned int nterms = 0;
1786 char *p = buffer;
1787
1788 list_for_each_entry(term, terms, chain) {
1789 if (!UVC_ENTITY_IS_TERM(term) ||
1790 UVC_TERM_DIRECTION(term) != dir)
1791 continue;
1792
1793 if (nterms)
1794 p += sprintf(p, ",");
1795 if (++nterms >= 4) {
1796 p += sprintf(p, "...");
1797 break;
1798 }
1799 p += sprintf(p, "%u", term->id);
1800 }
1801
1802 return p - buffer;
1803 }
1804
uvc_print_chain(struct uvc_video_chain * chain)1805 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1806 {
1807 static char buffer[43];
1808 char *p = buffer;
1809
1810 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1811 p += sprintf(p, " -> ");
1812 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1813
1814 return buffer;
1815 }
1816
uvc_alloc_chain(struct uvc_device * dev)1817 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1818 {
1819 struct uvc_video_chain *chain;
1820
1821 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1822 if (chain == NULL)
1823 return NULL;
1824
1825 INIT_LIST_HEAD(&chain->entities);
1826 mutex_init(&chain->ctrl_mutex);
1827 chain->dev = dev;
1828 v4l2_prio_init(&chain->prio);
1829
1830 return chain;
1831 }
1832
1833 /*
1834 * Fallback heuristic for devices that don't connect units and terminals in a
1835 * valid chain.
1836 *
1837 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1838 * to fail, but if we just take the entities we can find and put them together
1839 * in the most sensible chain we can think of, turns out they do work anyway.
1840 * Note: This heuristic assumes there is a single chain.
1841 *
1842 * At the time of writing, devices known to have such a broken chain are
1843 * - Acer Integrated Camera (5986:055a)
1844 * - Realtek rtl157a7 (0bda:57a7)
1845 */
uvc_scan_fallback(struct uvc_device * dev)1846 static int uvc_scan_fallback(struct uvc_device *dev)
1847 {
1848 struct uvc_video_chain *chain;
1849 struct uvc_entity *iterm = NULL;
1850 struct uvc_entity *oterm = NULL;
1851 struct uvc_entity *entity;
1852 struct uvc_entity *prev;
1853
1854 /*
1855 * Start by locating the input and output terminals. We only support
1856 * devices with exactly one of each for now.
1857 */
1858 list_for_each_entry(entity, &dev->entities, list) {
1859 if (UVC_ENTITY_IS_ITERM(entity)) {
1860 if (iterm)
1861 return -EINVAL;
1862 iterm = entity;
1863 }
1864
1865 if (UVC_ENTITY_IS_OTERM(entity)) {
1866 if (oterm)
1867 return -EINVAL;
1868 oterm = entity;
1869 }
1870 }
1871
1872 if (iterm == NULL || oterm == NULL)
1873 return -EINVAL;
1874
1875 /* Allocate the chain and fill it. */
1876 chain = uvc_alloc_chain(dev);
1877 if (chain == NULL)
1878 return -ENOMEM;
1879
1880 if (uvc_scan_chain_entity(chain, oterm) < 0)
1881 goto error;
1882
1883 prev = oterm;
1884
1885 /*
1886 * Add all Processing and Extension Units with two pads. The order
1887 * doesn't matter much, use reverse list traversal to connect units in
1888 * UVC descriptor order as we build the chain from output to input. This
1889 * leads to units appearing in the order meant by the manufacturer for
1890 * the cameras known to require this heuristic.
1891 */
1892 list_for_each_entry_reverse(entity, &dev->entities, list) {
1893 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1894 entity->type != UVC_VC_EXTENSION_UNIT)
1895 continue;
1896
1897 if (entity->num_pads != 2)
1898 continue;
1899
1900 if (uvc_scan_chain_entity(chain, entity) < 0)
1901 goto error;
1902
1903 prev->baSourceID[0] = entity->id;
1904 prev = entity;
1905 }
1906
1907 if (uvc_scan_chain_entity(chain, iterm) < 0)
1908 goto error;
1909
1910 prev->baSourceID[0] = iterm->id;
1911
1912 list_add_tail(&chain->list, &dev->chains);
1913
1914 uvc_trace(UVC_TRACE_PROBE,
1915 "Found a video chain by fallback heuristic (%s).\n",
1916 uvc_print_chain(chain));
1917
1918 return 0;
1919
1920 error:
1921 kfree(chain);
1922 return -EINVAL;
1923 }
1924
1925 /*
1926 * Scan the device for video chains and register video devices.
1927 *
1928 * Chains are scanned starting at their output terminals and walked backwards.
1929 */
uvc_scan_device(struct uvc_device * dev)1930 static int uvc_scan_device(struct uvc_device *dev)
1931 {
1932 struct uvc_video_chain *chain;
1933 struct uvc_entity *term;
1934
1935 list_for_each_entry(term, &dev->entities, list) {
1936 if (!UVC_ENTITY_IS_OTERM(term))
1937 continue;
1938
1939 /* If the terminal is already included in a chain, skip it.
1940 * This can happen for chains that have multiple output
1941 * terminals, where all output terminals beside the first one
1942 * will be inserted in the chain in forward scans.
1943 */
1944 if (term->chain.next || term->chain.prev)
1945 continue;
1946
1947 chain = uvc_alloc_chain(dev);
1948 if (chain == NULL)
1949 return -ENOMEM;
1950
1951 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1952
1953 if (uvc_scan_chain(chain, term) < 0) {
1954 kfree(chain);
1955 continue;
1956 }
1957
1958 uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n",
1959 uvc_print_chain(chain));
1960
1961 list_add_tail(&chain->list, &dev->chains);
1962 }
1963
1964 if (list_empty(&dev->chains))
1965 uvc_scan_fallback(dev);
1966
1967 if (list_empty(&dev->chains)) {
1968 uvc_printk(KERN_INFO, "No valid video chain found.\n");
1969 return -1;
1970 }
1971
1972 return 0;
1973 }
1974
1975 /* ------------------------------------------------------------------------
1976 * Video device registration and unregistration
1977 */
1978
1979 /*
1980 * Delete the UVC device.
1981 *
1982 * Called by the kernel when the last reference to the uvc_device structure
1983 * is released.
1984 *
1985 * As this function is called after or during disconnect(), all URBs have
1986 * already been cancelled by the USB core. There is no need to kill the
1987 * interrupt URB manually.
1988 */
uvc_delete(struct kref * kref)1989 static void uvc_delete(struct kref *kref)
1990 {
1991 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1992 struct list_head *p, *n;
1993
1994 uvc_status_cleanup(dev);
1995 uvc_ctrl_cleanup_device(dev);
1996
1997 usb_put_intf(dev->intf);
1998 usb_put_dev(dev->udev);
1999
2000 #ifdef CONFIG_MEDIA_CONTROLLER
2001 media_device_cleanup(&dev->mdev);
2002 #endif
2003
2004 list_for_each_safe(p, n, &dev->chains) {
2005 struct uvc_video_chain *chain;
2006 chain = list_entry(p, struct uvc_video_chain, list);
2007 kfree(chain);
2008 }
2009
2010 list_for_each_safe(p, n, &dev->entities) {
2011 struct uvc_entity *entity;
2012 entity = list_entry(p, struct uvc_entity, list);
2013 #ifdef CONFIG_MEDIA_CONTROLLER
2014 uvc_mc_cleanup_entity(entity);
2015 #endif
2016 kfree(entity);
2017 }
2018
2019 list_for_each_safe(p, n, &dev->streams) {
2020 struct uvc_streaming *streaming;
2021 streaming = list_entry(p, struct uvc_streaming, list);
2022 usb_driver_release_interface(&uvc_driver.driver,
2023 streaming->intf);
2024 uvc_stream_delete(streaming);
2025 }
2026
2027 kfree(dev);
2028 }
2029
uvc_release(struct video_device * vdev)2030 static void uvc_release(struct video_device *vdev)
2031 {
2032 struct uvc_streaming *stream = video_get_drvdata(vdev);
2033 struct uvc_device *dev = stream->dev;
2034
2035 kref_put(&dev->ref, uvc_delete);
2036 }
2037
2038 /*
2039 * Unregister the video devices.
2040 */
uvc_unregister_video(struct uvc_device * dev)2041 static void uvc_unregister_video(struct uvc_device *dev)
2042 {
2043 struct uvc_streaming *stream;
2044
2045 list_for_each_entry(stream, &dev->streams, list) {
2046 if (!video_is_registered(&stream->vdev))
2047 continue;
2048
2049 video_unregister_device(&stream->vdev);
2050 video_unregister_device(&stream->meta.vdev);
2051
2052 uvc_debugfs_cleanup_stream(stream);
2053 }
2054
2055 uvc_status_unregister(dev);
2056
2057 if (dev->vdev.dev)
2058 v4l2_device_unregister(&dev->vdev);
2059 #ifdef CONFIG_MEDIA_CONTROLLER
2060 if (media_devnode_is_registered(dev->mdev.devnode))
2061 media_device_unregister(&dev->mdev);
2062 #endif
2063 }
2064
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)2065 int uvc_register_video_device(struct uvc_device *dev,
2066 struct uvc_streaming *stream,
2067 struct video_device *vdev,
2068 struct uvc_video_queue *queue,
2069 enum v4l2_buf_type type,
2070 const struct v4l2_file_operations *fops,
2071 const struct v4l2_ioctl_ops *ioctl_ops)
2072 {
2073 int ret;
2074
2075 /* Initialize the video buffers queue. */
2076 ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
2077 if (ret)
2078 return ret;
2079
2080 /* Register the device with V4L. */
2081
2082 /*
2083 * We already hold a reference to dev->udev. The video device will be
2084 * unregistered before the reference is released, so we don't need to
2085 * get another one.
2086 */
2087 vdev->v4l2_dev = &dev->vdev;
2088 vdev->fops = fops;
2089 vdev->ioctl_ops = ioctl_ops;
2090 vdev->release = uvc_release;
2091 vdev->prio = &stream->chain->prio;
2092 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2093 vdev->vfl_dir = VFL_DIR_TX;
2094 else
2095 vdev->vfl_dir = VFL_DIR_RX;
2096
2097 switch (type) {
2098 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2099 default:
2100 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
2101 break;
2102 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2103 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
2104 break;
2105 case V4L2_BUF_TYPE_META_CAPTURE:
2106 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
2107 break;
2108 }
2109
2110 strscpy(vdev->name, dev->name, sizeof(vdev->name));
2111
2112 /*
2113 * Set the driver data before calling video_register_device, otherwise
2114 * the file open() handler might race us.
2115 */
2116 video_set_drvdata(vdev, stream);
2117
2118 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
2119 if (ret < 0) {
2120 uvc_printk(KERN_ERR, "Failed to register %s device (%d).\n",
2121 v4l2_type_names[type], ret);
2122 return ret;
2123 }
2124
2125 kref_get(&dev->ref);
2126 return 0;
2127 }
2128
uvc_register_video(struct uvc_device * dev,struct uvc_streaming * stream)2129 static int uvc_register_video(struct uvc_device *dev,
2130 struct uvc_streaming *stream)
2131 {
2132 int ret;
2133
2134 /* Initialize the streaming interface with default parameters. */
2135 ret = uvc_video_init(stream);
2136 if (ret < 0) {
2137 uvc_printk(KERN_ERR, "Failed to initialize the device (%d).\n",
2138 ret);
2139 return ret;
2140 }
2141
2142 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2143 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2144 | V4L2_CAP_META_CAPTURE;
2145 else
2146 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2147
2148 uvc_debugfs_init_stream(stream);
2149
2150 /* Register the device with V4L. */
2151 return uvc_register_video_device(dev, stream, &stream->vdev,
2152 &stream->queue, stream->type,
2153 &uvc_fops, &uvc_ioctl_ops);
2154 }
2155
2156 /*
2157 * Register all video devices in all chains.
2158 */
uvc_register_terms(struct uvc_device * dev,struct uvc_video_chain * chain)2159 static int uvc_register_terms(struct uvc_device *dev,
2160 struct uvc_video_chain *chain)
2161 {
2162 struct uvc_streaming *stream;
2163 struct uvc_entity *term;
2164 int ret;
2165
2166 list_for_each_entry(term, &chain->entities, chain) {
2167 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2168 continue;
2169
2170 stream = uvc_stream_by_id(dev, term->id);
2171 if (stream == NULL) {
2172 uvc_printk(KERN_INFO, "No streaming interface found "
2173 "for terminal %u.", term->id);
2174 continue;
2175 }
2176
2177 stream->chain = chain;
2178 ret = uvc_register_video(dev, stream);
2179 if (ret < 0)
2180 return ret;
2181
2182 /* Register a metadata node, but ignore a possible failure,
2183 * complete registration of video nodes anyway.
2184 */
2185 uvc_meta_register(stream);
2186
2187 term->vdev = &stream->vdev;
2188 }
2189
2190 return 0;
2191 }
2192
uvc_register_chains(struct uvc_device * dev)2193 static int uvc_register_chains(struct uvc_device *dev)
2194 {
2195 struct uvc_video_chain *chain;
2196 int ret;
2197
2198 list_for_each_entry(chain, &dev->chains, list) {
2199 ret = uvc_register_terms(dev, chain);
2200 if (ret < 0)
2201 return ret;
2202
2203 #ifdef CONFIG_MEDIA_CONTROLLER
2204 ret = uvc_mc_register_entities(chain);
2205 if (ret < 0)
2206 uvc_printk(KERN_INFO,
2207 "Failed to register entities (%d).\n", ret);
2208 #endif
2209 }
2210
2211 return 0;
2212 }
2213
2214 /* ------------------------------------------------------------------------
2215 * USB probe, disconnect, suspend and resume
2216 */
2217
2218 static const struct uvc_device_info uvc_quirk_none = { 0 };
2219
uvc_probe(struct usb_interface * intf,const struct usb_device_id * id)2220 static int uvc_probe(struct usb_interface *intf,
2221 const struct usb_device_id *id)
2222 {
2223 struct usb_device *udev = interface_to_usbdev(intf);
2224 struct uvc_device *dev;
2225 const struct uvc_device_info *info =
2226 (const struct uvc_device_info *)id->driver_info;
2227 int function;
2228 int ret;
2229
2230 if (id->idVendor && id->idProduct)
2231 uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
2232 "(%04x:%04x)\n", udev->devpath, id->idVendor,
2233 id->idProduct);
2234 else
2235 uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
2236 udev->devpath);
2237
2238 /* Allocate memory for the device and initialize it. */
2239 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2240 if (dev == NULL)
2241 return -ENOMEM;
2242
2243 INIT_LIST_HEAD(&dev->entities);
2244 INIT_LIST_HEAD(&dev->chains);
2245 INIT_LIST_HEAD(&dev->streams);
2246 kref_init(&dev->ref);
2247 atomic_set(&dev->nmappings, 0);
2248 mutex_init(&dev->lock);
2249
2250 dev->udev = usb_get_dev(udev);
2251 dev->intf = usb_get_intf(intf);
2252 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2253 dev->info = info ? info : &uvc_quirk_none;
2254 dev->quirks = uvc_quirks_param == -1
2255 ? dev->info->quirks : uvc_quirks_param;
2256
2257 if (udev->product != NULL)
2258 strscpy(dev->name, udev->product, sizeof(dev->name));
2259 else
2260 snprintf(dev->name, sizeof(dev->name),
2261 "UVC Camera (%04x:%04x)",
2262 le16_to_cpu(udev->descriptor.idVendor),
2263 le16_to_cpu(udev->descriptor.idProduct));
2264
2265 /*
2266 * Add iFunction or iInterface to names when available as additional
2267 * distinguishers between interfaces. iFunction is prioritized over
2268 * iInterface which matches Windows behavior at the point of writing.
2269 */
2270 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2271 function = intf->intf_assoc->iFunction;
2272 else
2273 function = intf->cur_altsetting->desc.iInterface;
2274 if (function != 0) {
2275 size_t len;
2276
2277 strlcat(dev->name, ": ", sizeof(dev->name));
2278 len = strlen(dev->name);
2279 usb_string(udev, function, dev->name + len,
2280 sizeof(dev->name) - len);
2281 }
2282
2283 /* Initialize the media device. */
2284 #ifdef CONFIG_MEDIA_CONTROLLER
2285 dev->mdev.dev = &intf->dev;
2286 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2287 if (udev->serial)
2288 strscpy(dev->mdev.serial, udev->serial,
2289 sizeof(dev->mdev.serial));
2290 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2291 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2292 media_device_init(&dev->mdev);
2293
2294 dev->vdev.mdev = &dev->mdev;
2295 #endif
2296
2297 /* Parse the Video Class control descriptor. */
2298 if (uvc_parse_control(dev) < 0) {
2299 uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
2300 "descriptors.\n");
2301 goto error;
2302 }
2303
2304 uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2305 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2306 udev->product ? udev->product : "<unnamed>",
2307 le16_to_cpu(udev->descriptor.idVendor),
2308 le16_to_cpu(udev->descriptor.idProduct));
2309
2310 if (dev->quirks != dev->info->quirks) {
2311 uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module "
2312 "parameter for testing purpose.\n", dev->quirks);
2313 uvc_printk(KERN_INFO, "Please report required quirks to the "
2314 "linux-uvc-devel mailing list.\n");
2315 }
2316
2317 /* Register the V4L2 device. */
2318 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2319 goto error;
2320
2321 /* Initialize controls. */
2322 if (uvc_ctrl_init_device(dev) < 0)
2323 goto error;
2324
2325 /* Scan the device for video chains. */
2326 if (uvc_scan_device(dev) < 0)
2327 goto error;
2328
2329 /* Register video device nodes. */
2330 if (uvc_register_chains(dev) < 0)
2331 goto error;
2332
2333 #ifdef CONFIG_MEDIA_CONTROLLER
2334 /* Register the media device node */
2335 if (media_device_register(&dev->mdev) < 0)
2336 goto error;
2337 #endif
2338 /* Save our data pointer in the interface data. */
2339 usb_set_intfdata(intf, dev);
2340
2341 /* Initialize the interrupt URB. */
2342 if ((ret = uvc_status_init(dev)) < 0) {
2343 uvc_printk(KERN_INFO, "Unable to initialize the status "
2344 "endpoint (%d), status interrupt will not be "
2345 "supported.\n", ret);
2346 }
2347
2348 uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
2349 usb_enable_autosuspend(udev);
2350 return 0;
2351
2352 error:
2353 uvc_unregister_video(dev);
2354 kref_put(&dev->ref, uvc_delete);
2355 return -ENODEV;
2356 }
2357
uvc_disconnect(struct usb_interface * intf)2358 static void uvc_disconnect(struct usb_interface *intf)
2359 {
2360 struct uvc_device *dev = usb_get_intfdata(intf);
2361
2362 /* Set the USB interface data to NULL. This can be done outside the
2363 * lock, as there's no other reader.
2364 */
2365 usb_set_intfdata(intf, NULL);
2366
2367 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2368 UVC_SC_VIDEOSTREAMING)
2369 return;
2370
2371 uvc_unregister_video(dev);
2372 kref_put(&dev->ref, uvc_delete);
2373 }
2374
uvc_suspend(struct usb_interface * intf,pm_message_t message)2375 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2376 {
2377 struct uvc_device *dev = usb_get_intfdata(intf);
2378 struct uvc_streaming *stream;
2379
2380 uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
2381 intf->cur_altsetting->desc.bInterfaceNumber);
2382
2383 /* Controls are cached on the fly so they don't need to be saved. */
2384 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2385 UVC_SC_VIDEOCONTROL) {
2386 mutex_lock(&dev->lock);
2387 if (dev->users)
2388 uvc_status_stop(dev);
2389 mutex_unlock(&dev->lock);
2390 return 0;
2391 }
2392
2393 list_for_each_entry(stream, &dev->streams, list) {
2394 if (stream->intf == intf)
2395 return uvc_video_suspend(stream);
2396 }
2397
2398 uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface "
2399 "mismatch.\n");
2400 return -EINVAL;
2401 }
2402
__uvc_resume(struct usb_interface * intf,int reset)2403 static int __uvc_resume(struct usb_interface *intf, int reset)
2404 {
2405 struct uvc_device *dev = usb_get_intfdata(intf);
2406 struct uvc_streaming *stream;
2407 int ret = 0;
2408
2409 uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
2410 intf->cur_altsetting->desc.bInterfaceNumber);
2411
2412 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2413 UVC_SC_VIDEOCONTROL) {
2414 if (reset) {
2415 ret = uvc_ctrl_restore_values(dev);
2416 if (ret < 0)
2417 return ret;
2418 }
2419
2420 mutex_lock(&dev->lock);
2421 if (dev->users)
2422 ret = uvc_status_start(dev, GFP_NOIO);
2423 mutex_unlock(&dev->lock);
2424
2425 return ret;
2426 }
2427
2428 list_for_each_entry(stream, &dev->streams, list) {
2429 if (stream->intf == intf) {
2430 ret = uvc_video_resume(stream, reset);
2431 if (ret < 0)
2432 uvc_queue_streamoff(&stream->queue,
2433 stream->queue.queue.type);
2434 return ret;
2435 }
2436 }
2437
2438 uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface "
2439 "mismatch.\n");
2440 return -EINVAL;
2441 }
2442
uvc_resume(struct usb_interface * intf)2443 static int uvc_resume(struct usb_interface *intf)
2444 {
2445 return __uvc_resume(intf, 0);
2446 }
2447
uvc_reset_resume(struct usb_interface * intf)2448 static int uvc_reset_resume(struct usb_interface *intf)
2449 {
2450 return __uvc_resume(intf, 1);
2451 }
2452
2453 /* ------------------------------------------------------------------------
2454 * Module parameters
2455 */
2456
uvc_clock_param_get(char * buffer,const struct kernel_param * kp)2457 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2458 {
2459 if (uvc_clock_param == CLOCK_MONOTONIC)
2460 return sprintf(buffer, "CLOCK_MONOTONIC");
2461 else
2462 return sprintf(buffer, "CLOCK_REALTIME");
2463 }
2464
uvc_clock_param_set(const char * val,const struct kernel_param * kp)2465 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2466 {
2467 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2468 val += strlen("clock_");
2469
2470 if (strcasecmp(val, "monotonic") == 0)
2471 uvc_clock_param = CLOCK_MONOTONIC;
2472 else if (strcasecmp(val, "realtime") == 0)
2473 uvc_clock_param = CLOCK_REALTIME;
2474 else
2475 return -EINVAL;
2476
2477 return 0;
2478 }
2479
2480 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2481 &uvc_clock_param, S_IRUGO|S_IWUSR);
2482 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2483 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR);
2484 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2485 module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR);
2486 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2487 module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
2488 MODULE_PARM_DESC(quirks, "Forced device quirks");
2489 module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
2490 MODULE_PARM_DESC(trace, "Trace level bitmask");
2491 module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);
2492 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2493
2494 /* ------------------------------------------------------------------------
2495 * Driver initialization and cleanup
2496 */
2497
2498 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2499 .quirks = UVC_QUIRK_PROBE_MINMAX,
2500 };
2501
2502 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2503 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2504 };
2505
2506 static const struct uvc_device_info uvc_quirk_probe_def = {
2507 .quirks = UVC_QUIRK_PROBE_DEF,
2508 };
2509
2510 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2511 .quirks = UVC_QUIRK_STREAM_NO_FID,
2512 };
2513
2514 static const struct uvc_device_info uvc_quirk_force_y8 = {
2515 .quirks = UVC_QUIRK_FORCE_Y8,
2516 };
2517
2518 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2519 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2520 {.meta_format = m}
2521
2522 /*
2523 * The Logitech cameras listed below have their interface class set to
2524 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2525 * though they are compliant.
2526 */
2527 static const struct usb_device_id uvc_ids[] = {
2528 /* LogiLink Wireless Webcam */
2529 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2530 | USB_DEVICE_ID_MATCH_INT_INFO,
2531 .idVendor = 0x0416,
2532 .idProduct = 0xa91a,
2533 .bInterfaceClass = USB_CLASS_VIDEO,
2534 .bInterfaceSubClass = 1,
2535 .bInterfaceProtocol = 0,
2536 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2537 /* Genius eFace 2025 */
2538 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2539 | USB_DEVICE_ID_MATCH_INT_INFO,
2540 .idVendor = 0x0458,
2541 .idProduct = 0x706e,
2542 .bInterfaceClass = USB_CLASS_VIDEO,
2543 .bInterfaceSubClass = 1,
2544 .bInterfaceProtocol = 0,
2545 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2546 /* Microsoft Lifecam NX-6000 */
2547 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2548 | USB_DEVICE_ID_MATCH_INT_INFO,
2549 .idVendor = 0x045e,
2550 .idProduct = 0x00f8,
2551 .bInterfaceClass = USB_CLASS_VIDEO,
2552 .bInterfaceSubClass = 1,
2553 .bInterfaceProtocol = 0,
2554 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2555 /* Microsoft Lifecam NX-3000 */
2556 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2557 | USB_DEVICE_ID_MATCH_INT_INFO,
2558 .idVendor = 0x045e,
2559 .idProduct = 0x0721,
2560 .bInterfaceClass = USB_CLASS_VIDEO,
2561 .bInterfaceSubClass = 1,
2562 .bInterfaceProtocol = 0,
2563 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2564 /* Microsoft Lifecam VX-7000 */
2565 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2566 | USB_DEVICE_ID_MATCH_INT_INFO,
2567 .idVendor = 0x045e,
2568 .idProduct = 0x0723,
2569 .bInterfaceClass = USB_CLASS_VIDEO,
2570 .bInterfaceSubClass = 1,
2571 .bInterfaceProtocol = 0,
2572 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2573 /* Logitech, Webcam C910 */
2574 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2575 | USB_DEVICE_ID_MATCH_INT_INFO,
2576 .idVendor = 0x046d,
2577 .idProduct = 0x0821,
2578 .bInterfaceClass = USB_CLASS_VIDEO,
2579 .bInterfaceSubClass = 1,
2580 .bInterfaceProtocol = 0,
2581 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2582 /* Logitech, Webcam B910 */
2583 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2584 | USB_DEVICE_ID_MATCH_INT_INFO,
2585 .idVendor = 0x046d,
2586 .idProduct = 0x0823,
2587 .bInterfaceClass = USB_CLASS_VIDEO,
2588 .bInterfaceSubClass = 1,
2589 .bInterfaceProtocol = 0,
2590 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)},
2591 /* Logitech Quickcam Fusion */
2592 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2593 | USB_DEVICE_ID_MATCH_INT_INFO,
2594 .idVendor = 0x046d,
2595 .idProduct = 0x08c1,
2596 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2597 .bInterfaceSubClass = 1,
2598 .bInterfaceProtocol = 0 },
2599 /* Logitech Quickcam Orbit MP */
2600 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2601 | USB_DEVICE_ID_MATCH_INT_INFO,
2602 .idVendor = 0x046d,
2603 .idProduct = 0x08c2,
2604 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2605 .bInterfaceSubClass = 1,
2606 .bInterfaceProtocol = 0 },
2607 /* Logitech Quickcam Pro for Notebook */
2608 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2609 | USB_DEVICE_ID_MATCH_INT_INFO,
2610 .idVendor = 0x046d,
2611 .idProduct = 0x08c3,
2612 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2613 .bInterfaceSubClass = 1,
2614 .bInterfaceProtocol = 0 },
2615 /* Logitech Quickcam Pro 5000 */
2616 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2617 | USB_DEVICE_ID_MATCH_INT_INFO,
2618 .idVendor = 0x046d,
2619 .idProduct = 0x08c5,
2620 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2621 .bInterfaceSubClass = 1,
2622 .bInterfaceProtocol = 0 },
2623 /* Logitech Quickcam OEM Dell Notebook */
2624 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2625 | USB_DEVICE_ID_MATCH_INT_INFO,
2626 .idVendor = 0x046d,
2627 .idProduct = 0x08c6,
2628 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2629 .bInterfaceSubClass = 1,
2630 .bInterfaceProtocol = 0 },
2631 /* Logitech Quickcam OEM Cisco VT Camera II */
2632 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2633 | USB_DEVICE_ID_MATCH_INT_INFO,
2634 .idVendor = 0x046d,
2635 .idProduct = 0x08c7,
2636 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2637 .bInterfaceSubClass = 1,
2638 .bInterfaceProtocol = 0 },
2639 /* Logitech HD Pro Webcam C920 */
2640 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2641 | USB_DEVICE_ID_MATCH_INT_INFO,
2642 .idVendor = 0x046d,
2643 .idProduct = 0x082d,
2644 .bInterfaceClass = USB_CLASS_VIDEO,
2645 .bInterfaceSubClass = 1,
2646 .bInterfaceProtocol = 0,
2647 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
2648 /* Chicony CNF7129 (Asus EEE 100HE) */
2649 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2650 | USB_DEVICE_ID_MATCH_INT_INFO,
2651 .idVendor = 0x04f2,
2652 .idProduct = 0xb071,
2653 .bInterfaceClass = USB_CLASS_VIDEO,
2654 .bInterfaceSubClass = 1,
2655 .bInterfaceProtocol = 0,
2656 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2657 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2658 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2659 | USB_DEVICE_ID_MATCH_INT_INFO,
2660 .idVendor = 0x058f,
2661 .idProduct = 0x3820,
2662 .bInterfaceClass = USB_CLASS_VIDEO,
2663 .bInterfaceSubClass = 1,
2664 .bInterfaceProtocol = 0,
2665 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2666 /* Dell XPS m1530 */
2667 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2668 | USB_DEVICE_ID_MATCH_INT_INFO,
2669 .idVendor = 0x05a9,
2670 .idProduct = 0x2640,
2671 .bInterfaceClass = USB_CLASS_VIDEO,
2672 .bInterfaceSubClass = 1,
2673 .bInterfaceProtocol = 0,
2674 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2675 /* Dell SP2008WFP Monitor */
2676 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2677 | USB_DEVICE_ID_MATCH_INT_INFO,
2678 .idVendor = 0x05a9,
2679 .idProduct = 0x2641,
2680 .bInterfaceClass = USB_CLASS_VIDEO,
2681 .bInterfaceSubClass = 1,
2682 .bInterfaceProtocol = 0,
2683 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2684 /* Dell Alienware X51 */
2685 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2686 | USB_DEVICE_ID_MATCH_INT_INFO,
2687 .idVendor = 0x05a9,
2688 .idProduct = 0x2643,
2689 .bInterfaceClass = USB_CLASS_VIDEO,
2690 .bInterfaceSubClass = 1,
2691 .bInterfaceProtocol = 0,
2692 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2693 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2694 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2695 | USB_DEVICE_ID_MATCH_INT_INFO,
2696 .idVendor = 0x05a9,
2697 .idProduct = 0x264a,
2698 .bInterfaceClass = USB_CLASS_VIDEO,
2699 .bInterfaceSubClass = 1,
2700 .bInterfaceProtocol = 0,
2701 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2702 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2703 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2704 | USB_DEVICE_ID_MATCH_INT_INFO,
2705 .idVendor = 0x05a9,
2706 .idProduct = 0x7670,
2707 .bInterfaceClass = USB_CLASS_VIDEO,
2708 .bInterfaceSubClass = 1,
2709 .bInterfaceProtocol = 0,
2710 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2711 /* Apple Built-In iSight */
2712 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2713 | USB_DEVICE_ID_MATCH_INT_INFO,
2714 .idVendor = 0x05ac,
2715 .idProduct = 0x8501,
2716 .bInterfaceClass = USB_CLASS_VIDEO,
2717 .bInterfaceSubClass = 1,
2718 .bInterfaceProtocol = 0,
2719 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2720 | UVC_QUIRK_BUILTIN_ISIGHT) },
2721 /* Apple Built-In iSight via iBridge */
2722 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2723 | USB_DEVICE_ID_MATCH_INT_INFO,
2724 .idVendor = 0x05ac,
2725 .idProduct = 0x8600,
2726 .bInterfaceClass = USB_CLASS_VIDEO,
2727 .bInterfaceSubClass = 1,
2728 .bInterfaceProtocol = 0,
2729 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2730 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2731 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2732 | USB_DEVICE_ID_MATCH_INT_INFO,
2733 .idVendor = 0x05c8,
2734 .idProduct = 0x0403,
2735 .bInterfaceClass = USB_CLASS_VIDEO,
2736 .bInterfaceSubClass = 1,
2737 .bInterfaceProtocol = 0,
2738 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2739 /* Genesys Logic USB 2.0 PC Camera */
2740 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2741 | USB_DEVICE_ID_MATCH_INT_INFO,
2742 .idVendor = 0x05e3,
2743 .idProduct = 0x0505,
2744 .bInterfaceClass = USB_CLASS_VIDEO,
2745 .bInterfaceSubClass = 1,
2746 .bInterfaceProtocol = 0,
2747 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2748 /* Hercules Classic Silver */
2749 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2750 | USB_DEVICE_ID_MATCH_INT_INFO,
2751 .idVendor = 0x06f8,
2752 .idProduct = 0x300c,
2753 .bInterfaceClass = USB_CLASS_VIDEO,
2754 .bInterfaceSubClass = 1,
2755 .bInterfaceProtocol = 0,
2756 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2757 /* ViMicro Vega */
2758 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2759 | USB_DEVICE_ID_MATCH_INT_INFO,
2760 .idVendor = 0x0ac8,
2761 .idProduct = 0x332d,
2762 .bInterfaceClass = USB_CLASS_VIDEO,
2763 .bInterfaceSubClass = 1,
2764 .bInterfaceProtocol = 0,
2765 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2766 /* ViMicro - Minoru3D */
2767 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2768 | USB_DEVICE_ID_MATCH_INT_INFO,
2769 .idVendor = 0x0ac8,
2770 .idProduct = 0x3410,
2771 .bInterfaceClass = USB_CLASS_VIDEO,
2772 .bInterfaceSubClass = 1,
2773 .bInterfaceProtocol = 0,
2774 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2775 /* ViMicro Venus - Minoru3D */
2776 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2777 | USB_DEVICE_ID_MATCH_INT_INFO,
2778 .idVendor = 0x0ac8,
2779 .idProduct = 0x3420,
2780 .bInterfaceClass = USB_CLASS_VIDEO,
2781 .bInterfaceSubClass = 1,
2782 .bInterfaceProtocol = 0,
2783 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2784 /* Ophir Optronics - SPCAM 620U */
2785 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2786 | USB_DEVICE_ID_MATCH_INT_INFO,
2787 .idVendor = 0x0bd3,
2788 .idProduct = 0x0555,
2789 .bInterfaceClass = USB_CLASS_VIDEO,
2790 .bInterfaceSubClass = 1,
2791 .bInterfaceProtocol = 0,
2792 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2793 /* MT6227 */
2794 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2795 | USB_DEVICE_ID_MATCH_INT_INFO,
2796 .idVendor = 0x0e8d,
2797 .idProduct = 0x0004,
2798 .bInterfaceClass = USB_CLASS_VIDEO,
2799 .bInterfaceSubClass = 1,
2800 .bInterfaceProtocol = 0,
2801 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2802 | UVC_QUIRK_PROBE_DEF) },
2803 /* IMC Networks (Medion Akoya) */
2804 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2805 | USB_DEVICE_ID_MATCH_INT_INFO,
2806 .idVendor = 0x13d3,
2807 .idProduct = 0x5103,
2808 .bInterfaceClass = USB_CLASS_VIDEO,
2809 .bInterfaceSubClass = 1,
2810 .bInterfaceProtocol = 0,
2811 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2812 /* JMicron USB2.0 XGA WebCam */
2813 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2814 | USB_DEVICE_ID_MATCH_INT_INFO,
2815 .idVendor = 0x152d,
2816 .idProduct = 0x0310,
2817 .bInterfaceClass = USB_CLASS_VIDEO,
2818 .bInterfaceSubClass = 1,
2819 .bInterfaceProtocol = 0,
2820 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2821 /* Syntek (HP Spartan) */
2822 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2823 | USB_DEVICE_ID_MATCH_INT_INFO,
2824 .idVendor = 0x174f,
2825 .idProduct = 0x5212,
2826 .bInterfaceClass = USB_CLASS_VIDEO,
2827 .bInterfaceSubClass = 1,
2828 .bInterfaceProtocol = 0,
2829 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2830 /* Syntek (Samsung Q310) */
2831 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2832 | USB_DEVICE_ID_MATCH_INT_INFO,
2833 .idVendor = 0x174f,
2834 .idProduct = 0x5931,
2835 .bInterfaceClass = USB_CLASS_VIDEO,
2836 .bInterfaceSubClass = 1,
2837 .bInterfaceProtocol = 0,
2838 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2839 /* Syntek (Packard Bell EasyNote MX52 */
2840 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2841 | USB_DEVICE_ID_MATCH_INT_INFO,
2842 .idVendor = 0x174f,
2843 .idProduct = 0x8a12,
2844 .bInterfaceClass = USB_CLASS_VIDEO,
2845 .bInterfaceSubClass = 1,
2846 .bInterfaceProtocol = 0,
2847 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2848 /* Syntek (Asus F9SG) */
2849 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2850 | USB_DEVICE_ID_MATCH_INT_INFO,
2851 .idVendor = 0x174f,
2852 .idProduct = 0x8a31,
2853 .bInterfaceClass = USB_CLASS_VIDEO,
2854 .bInterfaceSubClass = 1,
2855 .bInterfaceProtocol = 0,
2856 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2857 /* Syntek (Asus U3S) */
2858 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2859 | USB_DEVICE_ID_MATCH_INT_INFO,
2860 .idVendor = 0x174f,
2861 .idProduct = 0x8a33,
2862 .bInterfaceClass = USB_CLASS_VIDEO,
2863 .bInterfaceSubClass = 1,
2864 .bInterfaceProtocol = 0,
2865 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2866 /* Syntek (JAOtech Smart Terminal) */
2867 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2868 | USB_DEVICE_ID_MATCH_INT_INFO,
2869 .idVendor = 0x174f,
2870 .idProduct = 0x8a34,
2871 .bInterfaceClass = USB_CLASS_VIDEO,
2872 .bInterfaceSubClass = 1,
2873 .bInterfaceProtocol = 0,
2874 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2875 /* Miricle 307K */
2876 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2877 | USB_DEVICE_ID_MATCH_INT_INFO,
2878 .idVendor = 0x17dc,
2879 .idProduct = 0x0202,
2880 .bInterfaceClass = USB_CLASS_VIDEO,
2881 .bInterfaceSubClass = 1,
2882 .bInterfaceProtocol = 0,
2883 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2884 /* Lenovo Thinkpad SL400/SL500 */
2885 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2886 | USB_DEVICE_ID_MATCH_INT_INFO,
2887 .idVendor = 0x17ef,
2888 .idProduct = 0x480b,
2889 .bInterfaceClass = USB_CLASS_VIDEO,
2890 .bInterfaceSubClass = 1,
2891 .bInterfaceProtocol = 0,
2892 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2893 /* Aveo Technology USB 2.0 Camera */
2894 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2895 | USB_DEVICE_ID_MATCH_INT_INFO,
2896 .idVendor = 0x1871,
2897 .idProduct = 0x0306,
2898 .bInterfaceClass = USB_CLASS_VIDEO,
2899 .bInterfaceSubClass = 1,
2900 .bInterfaceProtocol = 0,
2901 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2902 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2903 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2904 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2905 | USB_DEVICE_ID_MATCH_INT_INFO,
2906 .idVendor = 0x1871,
2907 .idProduct = 0x0516,
2908 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2909 .bInterfaceSubClass = 1,
2910 .bInterfaceProtocol = 0 },
2911 /* Ecamm Pico iMage */
2912 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2913 | USB_DEVICE_ID_MATCH_INT_INFO,
2914 .idVendor = 0x18cd,
2915 .idProduct = 0xcafe,
2916 .bInterfaceClass = USB_CLASS_VIDEO,
2917 .bInterfaceSubClass = 1,
2918 .bInterfaceProtocol = 0,
2919 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2920 /* Manta MM-353 Plako */
2921 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2922 | USB_DEVICE_ID_MATCH_INT_INFO,
2923 .idVendor = 0x18ec,
2924 .idProduct = 0x3188,
2925 .bInterfaceClass = USB_CLASS_VIDEO,
2926 .bInterfaceSubClass = 1,
2927 .bInterfaceProtocol = 0,
2928 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2929 /* FSC WebCam V30S */
2930 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2931 | USB_DEVICE_ID_MATCH_INT_INFO,
2932 .idVendor = 0x18ec,
2933 .idProduct = 0x3288,
2934 .bInterfaceClass = USB_CLASS_VIDEO,
2935 .bInterfaceSubClass = 1,
2936 .bInterfaceProtocol = 0,
2937 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2938 /* Arkmicro unbranded */
2939 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2940 | USB_DEVICE_ID_MATCH_INT_INFO,
2941 .idVendor = 0x18ec,
2942 .idProduct = 0x3290,
2943 .bInterfaceClass = USB_CLASS_VIDEO,
2944 .bInterfaceSubClass = 1,
2945 .bInterfaceProtocol = 0,
2946 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2947 /* The Imaging Source USB CCD cameras */
2948 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2949 | USB_DEVICE_ID_MATCH_INT_INFO,
2950 .idVendor = 0x199e,
2951 .idProduct = 0x8102,
2952 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2953 .bInterfaceSubClass = 1,
2954 .bInterfaceProtocol = 0 },
2955 /* Bodelin ProScopeHR */
2956 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2957 | USB_DEVICE_ID_MATCH_DEV_HI
2958 | USB_DEVICE_ID_MATCH_INT_INFO,
2959 .idVendor = 0x19ab,
2960 .idProduct = 0x1000,
2961 .bcdDevice_hi = 0x0126,
2962 .bInterfaceClass = USB_CLASS_VIDEO,
2963 .bInterfaceSubClass = 1,
2964 .bInterfaceProtocol = 0,
2965 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
2966 /* MSI StarCam 370i */
2967 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2968 | USB_DEVICE_ID_MATCH_INT_INFO,
2969 .idVendor = 0x1b3b,
2970 .idProduct = 0x2951,
2971 .bInterfaceClass = USB_CLASS_VIDEO,
2972 .bInterfaceSubClass = 1,
2973 .bInterfaceProtocol = 0,
2974 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2975 /* Generalplus Technology Inc. 808 Camera */
2976 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2977 | USB_DEVICE_ID_MATCH_INT_INFO,
2978 .idVendor = 0x1b3f,
2979 .idProduct = 0x2002,
2980 .bInterfaceClass = USB_CLASS_VIDEO,
2981 .bInterfaceSubClass = 1,
2982 .bInterfaceProtocol = 0,
2983 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2984 /* SiGma Micro USB Web Camera */
2985 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2986 | USB_DEVICE_ID_MATCH_INT_INFO,
2987 .idVendor = 0x1c4f,
2988 .idProduct = 0x3000,
2989 .bInterfaceClass = USB_CLASS_VIDEO,
2990 .bInterfaceSubClass = 1,
2991 .bInterfaceProtocol = 0,
2992 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2993 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
2994 /* Oculus VR Positional Tracker DK2 */
2995 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2996 | USB_DEVICE_ID_MATCH_INT_INFO,
2997 .idVendor = 0x2833,
2998 .idProduct = 0x0201,
2999 .bInterfaceClass = USB_CLASS_VIDEO,
3000 .bInterfaceSubClass = 1,
3001 .bInterfaceProtocol = 0,
3002 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3003 /* Oculus VR Rift Sensor */
3004 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3005 | USB_DEVICE_ID_MATCH_INT_INFO,
3006 .idVendor = 0x2833,
3007 .idProduct = 0x0211,
3008 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
3009 .bInterfaceSubClass = 1,
3010 .bInterfaceProtocol = 0,
3011 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
3012 /* GEO Semiconductor GC6500 */
3013 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3014 | USB_DEVICE_ID_MATCH_INT_INFO,
3015 .idVendor = 0x29fe,
3016 .idProduct = 0x4d53,
3017 .bInterfaceClass = USB_CLASS_VIDEO,
3018 .bInterfaceSubClass = 1,
3019 .bInterfaceProtocol = 0,
3020 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
3021 /* Intel RealSense D4M */
3022 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
3023 | USB_DEVICE_ID_MATCH_INT_INFO,
3024 .idVendor = 0x8086,
3025 .idProduct = 0x0b03,
3026 .bInterfaceClass = USB_CLASS_VIDEO,
3027 .bInterfaceSubClass = 1,
3028 .bInterfaceProtocol = 0,
3029 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
3030 /* Generic USB Video Class */
3031 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
3032 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
3033 {}
3034 };
3035
3036 MODULE_DEVICE_TABLE(usb, uvc_ids);
3037
3038 struct uvc_driver uvc_driver = {
3039 .driver = {
3040 .name = "uvcvideo",
3041 .probe = uvc_probe,
3042 .disconnect = uvc_disconnect,
3043 .suspend = uvc_suspend,
3044 .resume = uvc_resume,
3045 .reset_resume = uvc_reset_resume,
3046 .id_table = uvc_ids,
3047 .supports_autosuspend = 1,
3048 },
3049 };
3050
uvc_init(void)3051 static int __init uvc_init(void)
3052 {
3053 int ret;
3054
3055 uvc_debugfs_init();
3056
3057 ret = usb_register(&uvc_driver.driver);
3058 if (ret < 0) {
3059 uvc_debugfs_cleanup();
3060 return ret;
3061 }
3062
3063 printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n");
3064 return 0;
3065 }
3066
uvc_cleanup(void)3067 static void __exit uvc_cleanup(void)
3068 {
3069 usb_deregister(&uvc_driver.driver);
3070 uvc_debugfs_cleanup();
3071 }
3072
3073 module_init(uvc_init);
3074 module_exit(uvc_cleanup);
3075
3076 MODULE_AUTHOR(DRIVER_AUTHOR);
3077 MODULE_DESCRIPTION(DRIVER_DESC);
3078 MODULE_LICENSE("GPL");
3079 MODULE_VERSION(DRIVER_VERSION);
3080
3081