1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * uvc_driver.c -- USB Video Class driver
5 * Copyright (C) 2005-2010
6 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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>
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-ioctl.h>
26 #define DRIVER_AUTHOR "Laurent Pinchart " \
27 "<laurent.pinchart@ideasonboard.com>"
28 #define DRIVER_DESC "USB Video Class driver"
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;
37 /* ------------------------------------------------------------------------
41 static struct uvc_format_desc uvc_fmts[] = {
43 .name = "YUV 4:2:2 (YUYV)",
44 .guid = UVC_GUID_FORMAT_YUY2,
45 .fcc = V4L2_PIX_FMT_YUYV,
48 .name = "YUV 4:2:2 (YUYV)",
49 .guid = UVC_GUID_FORMAT_YUY2_ISIGHT,
50 .fcc = V4L2_PIX_FMT_YUYV,
53 .name = "YUV 4:2:0 (NV12)",
54 .guid = UVC_GUID_FORMAT_NV12,
55 .fcc = V4L2_PIX_FMT_NV12,
59 .guid = UVC_GUID_FORMAT_MJPEG,
60 .fcc = V4L2_PIX_FMT_MJPEG,
63 .name = "YVU 4:2:0 (YV12)",
64 .guid = UVC_GUID_FORMAT_YV12,
65 .fcc = V4L2_PIX_FMT_YVU420,
68 .name = "YUV 4:2:0 (I420)",
69 .guid = UVC_GUID_FORMAT_I420,
70 .fcc = V4L2_PIX_FMT_YUV420,
73 .name = "YUV 4:2:0 (M420)",
74 .guid = UVC_GUID_FORMAT_M420,
75 .fcc = V4L2_PIX_FMT_M420,
78 .name = "YUV 4:2:2 (UYVY)",
79 .guid = UVC_GUID_FORMAT_UYVY,
80 .fcc = V4L2_PIX_FMT_UYVY,
83 .name = "Greyscale 8-bit (Y800)",
84 .guid = UVC_GUID_FORMAT_Y800,
85 .fcc = V4L2_PIX_FMT_GREY,
88 .name = "Greyscale 8-bit (Y8 )",
89 .guid = UVC_GUID_FORMAT_Y8,
90 .fcc = V4L2_PIX_FMT_GREY,
93 .name = "Greyscale 8-bit (D3DFMT_L8)",
94 .guid = UVC_GUID_FORMAT_D3DFMT_L8,
95 .fcc = V4L2_PIX_FMT_GREY,
98 .name = "IR 8-bit (L8_IR)",
99 .guid = UVC_GUID_FORMAT_KSMEDIA_L8_IR,
100 .fcc = V4L2_PIX_FMT_GREY,
103 .name = "Greyscale 10-bit (Y10 )",
104 .guid = UVC_GUID_FORMAT_Y10,
105 .fcc = V4L2_PIX_FMT_Y10,
108 .name = "Greyscale 12-bit (Y12 )",
109 .guid = UVC_GUID_FORMAT_Y12,
110 .fcc = V4L2_PIX_FMT_Y12,
113 .name = "Greyscale 16-bit (Y16 )",
114 .guid = UVC_GUID_FORMAT_Y16,
115 .fcc = V4L2_PIX_FMT_Y16,
118 .name = "BGGR Bayer (BY8 )",
119 .guid = UVC_GUID_FORMAT_BY8,
120 .fcc = V4L2_PIX_FMT_SBGGR8,
123 .name = "BGGR Bayer (BA81)",
124 .guid = UVC_GUID_FORMAT_BA81,
125 .fcc = V4L2_PIX_FMT_SBGGR8,
128 .name = "GBRG Bayer (GBRG)",
129 .guid = UVC_GUID_FORMAT_GBRG,
130 .fcc = V4L2_PIX_FMT_SGBRG8,
133 .name = "GRBG Bayer (GRBG)",
134 .guid = UVC_GUID_FORMAT_GRBG,
135 .fcc = V4L2_PIX_FMT_SGRBG8,
138 .name = "RGGB Bayer (RGGB)",
139 .guid = UVC_GUID_FORMAT_RGGB,
140 .fcc = V4L2_PIX_FMT_SRGGB8,
144 .guid = UVC_GUID_FORMAT_RGBP,
145 .fcc = V4L2_PIX_FMT_RGB565,
148 .name = "BGR 8:8:8 (BGR3)",
149 .guid = UVC_GUID_FORMAT_BGR3,
150 .fcc = V4L2_PIX_FMT_BGR24,
154 .guid = UVC_GUID_FORMAT_H264,
155 .fcc = V4L2_PIX_FMT_H264,
158 .name = "Greyscale 8 L/R (Y8I)",
159 .guid = UVC_GUID_FORMAT_Y8I,
160 .fcc = V4L2_PIX_FMT_Y8I,
163 .name = "Greyscale 12 L/R (Y12I)",
164 .guid = UVC_GUID_FORMAT_Y12I,
165 .fcc = V4L2_PIX_FMT_Y12I,
168 .name = "Depth data 16-bit (Z16)",
169 .guid = UVC_GUID_FORMAT_Z16,
170 .fcc = V4L2_PIX_FMT_Z16,
173 .name = "Bayer 10-bit (SRGGB10P)",
174 .guid = UVC_GUID_FORMAT_RW10,
175 .fcc = V4L2_PIX_FMT_SRGGB10P,
178 .name = "Bayer 16-bit (SBGGR16)",
179 .guid = UVC_GUID_FORMAT_BG16,
180 .fcc = V4L2_PIX_FMT_SBGGR16,
183 .name = "Bayer 16-bit (SGBRG16)",
184 .guid = UVC_GUID_FORMAT_GB16,
185 .fcc = V4L2_PIX_FMT_SGBRG16,
188 .name = "Bayer 16-bit (SRGGB16)",
189 .guid = UVC_GUID_FORMAT_RG16,
190 .fcc = V4L2_PIX_FMT_SRGGB16,
193 .name = "Bayer 16-bit (SGRBG16)",
194 .guid = UVC_GUID_FORMAT_GR16,
195 .fcc = V4L2_PIX_FMT_SGRBG16,
198 .name = "Depth data 16-bit (Z16)",
199 .guid = UVC_GUID_FORMAT_INVZ,
200 .fcc = V4L2_PIX_FMT_Z16,
203 .name = "Greyscale 10-bit (Y10 )",
204 .guid = UVC_GUID_FORMAT_INVI,
205 .fcc = V4L2_PIX_FMT_Y10,
208 .name = "IR:Depth 26-bit (INZI)",
209 .guid = UVC_GUID_FORMAT_INZI,
210 .fcc = V4L2_PIX_FMT_INZI,
213 .name = "4-bit Depth Confidence (Packed)",
214 .guid = UVC_GUID_FORMAT_CNF4,
215 .fcc = V4L2_PIX_FMT_CNF4,
219 /* ------------------------------------------------------------------------
223 struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
226 struct usb_host_endpoint *ep;
229 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
230 ep = &alts->endpoint[i];
231 if (ep->desc.bEndpointAddress == epaddr)
238 static struct uvc_format_desc *uvc_format_by_guid(const u8 guid[16])
240 unsigned int len = ARRAY_SIZE(uvc_fmts);
243 for (i = 0; i < len; ++i) {
244 if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
251 static u32 uvc_colorspace(const u8 primaries)
253 static const u8 colorprimaries[] = {
255 V4L2_COLORSPACE_SRGB,
256 V4L2_COLORSPACE_470_SYSTEM_M,
257 V4L2_COLORSPACE_470_SYSTEM_BG,
258 V4L2_COLORSPACE_SMPTE170M,
259 V4L2_COLORSPACE_SMPTE240M,
262 if (primaries < ARRAY_SIZE(colorprimaries))
263 return colorprimaries[primaries];
268 /* Simplify a fraction using a simple continued fraction decomposition. The
269 * idea here is to convert fractions such as 333333/10000000 to 1/30 using
270 * 32 bit arithmetic only. The algorithm is not perfect and relies upon two
271 * arbitrary parameters to remove non-significative terms from the simple
272 * continued fraction decomposition. Using 8 and 333 for n_terms and threshold
273 * respectively seems to give nice results.
275 void uvc_simplify_fraction(u32 *numerator, u32 *denominator,
276 unsigned int n_terms, unsigned int threshold)
282 an = kmalloc_array(n_terms, sizeof(*an), GFP_KERNEL);
286 /* Convert the fraction to a simple continued fraction. See
287 * http://mathforum.org/dr.math/faq/faq.fractions.html
288 * Stop if the current term is bigger than or equal to the given
294 for (n = 0; n < n_terms && y != 0; ++n) {
296 if (an[n] >= threshold) {
307 /* Expand the simple continued fraction back to an integer fraction. */
311 for (i = n; i > 0; --i) {
322 /* Convert a fraction to a frame interval in 100ns multiples. The idea here is
323 * to compute numerator / denominator * 10000000 using 32 bit fixed point
326 u32 uvc_fraction_to_interval(u32 numerator, u32 denominator)
330 /* Saturate the result if the operation would overflow. */
331 if (denominator == 0 ||
332 numerator/denominator >= ((u32)-1)/10000000)
335 /* Divide both the denominator and the multiplier by two until
336 * numerator * multiplier doesn't overflow. If anyone knows a better
337 * algorithm please let me know.
339 multiplier = 10000000;
340 while (numerator > ((u32)-1)/multiplier) {
345 return denominator ? numerator * multiplier / denominator : 0;
348 /* ------------------------------------------------------------------------
349 * Terminal and unit management
352 struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
354 struct uvc_entity *entity;
356 list_for_each_entry(entity, &dev->entities, list) {
357 if (entity->id == id)
364 static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
365 int id, struct uvc_entity *entity)
370 entity = list_entry(&dev->entities, struct uvc_entity, list);
372 list_for_each_entry_continue(entity, &dev->entities, list) {
373 for (i = 0; i < entity->bNrInPins; ++i)
374 if (entity->baSourceID[i] == id)
381 static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
383 struct uvc_streaming *stream;
385 list_for_each_entry(stream, &dev->streams, list) {
386 if (stream->header.bTerminalLink == id)
393 /* ------------------------------------------------------------------------
394 * Streaming Object Management
397 static void uvc_stream_delete(struct uvc_streaming *stream)
399 if (stream->async_wq)
400 destroy_workqueue(stream->async_wq);
402 mutex_destroy(&stream->mutex);
404 usb_put_intf(stream->intf);
406 kfree(stream->format);
407 kfree(stream->header.bmaControls);
411 static struct uvc_streaming *uvc_stream_new(struct uvc_device *dev,
412 struct usb_interface *intf)
414 struct uvc_streaming *stream;
416 stream = kzalloc(sizeof(*stream), GFP_KERNEL);
420 mutex_init(&stream->mutex);
423 stream->intf = usb_get_intf(intf);
424 stream->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
426 /* Allocate a stream specific work queue for asynchronous tasks. */
427 stream->async_wq = alloc_workqueue("uvcvideo", WQ_UNBOUND | WQ_HIGHPRI,
429 if (!stream->async_wq) {
430 uvc_stream_delete(stream);
437 /* ------------------------------------------------------------------------
438 * Descriptors parsing
441 static int uvc_parse_format(struct uvc_device *dev,
442 struct uvc_streaming *streaming, struct uvc_format *format,
443 u32 **intervals, unsigned char *buffer, int buflen)
445 struct usb_interface *intf = streaming->intf;
446 struct usb_host_interface *alts = intf->cur_altsetting;
447 struct uvc_format_desc *fmtdesc;
448 struct uvc_frame *frame;
449 const unsigned char *start = buffer;
450 unsigned int width_multiplier = 1;
451 unsigned int interval;
455 format->type = buffer[2];
456 format->index = buffer[3];
459 case UVC_VS_FORMAT_UNCOMPRESSED:
460 case UVC_VS_FORMAT_FRAME_BASED:
461 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
463 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
464 "interface %d FORMAT error\n",
466 alts->desc.bInterfaceNumber);
470 /* Find the format descriptor from its GUID. */
471 fmtdesc = uvc_format_by_guid(&buffer[5]);
473 if (fmtdesc != NULL) {
474 strscpy(format->name, fmtdesc->name,
475 sizeof(format->name));
476 format->fcc = fmtdesc->fcc;
478 uvc_printk(KERN_INFO, "Unknown video format %pUl\n",
480 snprintf(format->name, sizeof(format->name), "%pUl\n",
485 format->bpp = buffer[21];
487 /* Some devices report a format that doesn't match what they
490 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
491 if (format->fcc == V4L2_PIX_FMT_YUYV) {
492 strscpy(format->name, "Greyscale 8-bit (Y8 )",
493 sizeof(format->name));
494 format->fcc = V4L2_PIX_FMT_GREY;
496 width_multiplier = 2;
500 /* Some devices report bpp that doesn't match the format. */
501 if (dev->quirks & UVC_QUIRK_FORCE_BPP) {
502 const struct v4l2_format_info *info =
503 v4l2_format_info(format->fcc);
506 unsigned int div = info->hdiv * info->vdiv;
508 n = info->bpp[0] * div;
509 for (i = 1; i < info->comp_planes; i++)
512 format->bpp = DIV_ROUND_UP(8 * n, div);
516 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
517 ftype = UVC_VS_FRAME_UNCOMPRESSED;
519 ftype = UVC_VS_FRAME_FRAME_BASED;
521 format->flags = UVC_FMT_FLAG_COMPRESSED;
525 case UVC_VS_FORMAT_MJPEG:
527 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
528 "interface %d FORMAT error\n",
530 alts->desc.bInterfaceNumber);
534 strscpy(format->name, "MJPEG", sizeof(format->name));
535 format->fcc = V4L2_PIX_FMT_MJPEG;
536 format->flags = UVC_FMT_FLAG_COMPRESSED;
538 ftype = UVC_VS_FRAME_MJPEG;
541 case UVC_VS_FORMAT_DV:
543 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
544 "interface %d FORMAT error\n",
546 alts->desc.bInterfaceNumber);
550 switch (buffer[8] & 0x7f) {
552 strscpy(format->name, "SD-DV", sizeof(format->name));
555 strscpy(format->name, "SDL-DV", sizeof(format->name));
558 strscpy(format->name, "HD-DV", sizeof(format->name));
561 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
562 "interface %d: unknown DV format %u\n",
564 alts->desc.bInterfaceNumber, buffer[8]);
568 strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz",
569 sizeof(format->name));
571 format->fcc = V4L2_PIX_FMT_DV;
572 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
576 /* Create a dummy frame descriptor. */
577 frame = &format->frame[0];
578 memset(&format->frame[0], 0, sizeof(format->frame[0]));
579 frame->bFrameIntervalType = 1;
580 frame->dwDefaultFrameInterval = 1;
581 frame->dwFrameInterval = *intervals;
586 case UVC_VS_FORMAT_MPEG2TS:
587 case UVC_VS_FORMAT_STREAM_BASED:
588 /* Not supported yet. */
590 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
591 "interface %d unsupported format %u\n",
592 dev->udev->devnum, alts->desc.bInterfaceNumber,
597 uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
602 /* Parse the frame descriptors. Only uncompressed, MJPEG and frame
603 * based formats have frame descriptors.
605 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
606 buffer[2] == ftype) {
607 frame = &format->frame[format->nframes];
608 if (ftype != UVC_VS_FRAME_FRAME_BASED)
609 n = buflen > 25 ? buffer[25] : 0;
611 n = buflen > 21 ? buffer[21] : 0;
615 if (buflen < 26 + 4*n) {
616 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
617 "interface %d FRAME error\n", dev->udev->devnum,
618 alts->desc.bInterfaceNumber);
622 frame->bFrameIndex = buffer[3];
623 frame->bmCapabilities = buffer[4];
624 frame->wWidth = get_unaligned_le16(&buffer[5])
626 frame->wHeight = get_unaligned_le16(&buffer[7]);
627 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
628 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
629 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
630 frame->dwMaxVideoFrameBufferSize =
631 get_unaligned_le32(&buffer[17]);
632 frame->dwDefaultFrameInterval =
633 get_unaligned_le32(&buffer[21]);
634 frame->bFrameIntervalType = buffer[25];
636 frame->dwMaxVideoFrameBufferSize = 0;
637 frame->dwDefaultFrameInterval =
638 get_unaligned_le32(&buffer[17]);
639 frame->bFrameIntervalType = buffer[21];
641 frame->dwFrameInterval = *intervals;
643 /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize
644 * completely. Observed behaviours range from setting the
645 * value to 1.1x the actual frame size to hardwiring the
646 * 16 low bits to 0. This results in a higher than necessary
647 * memory usage as well as a wrong image size information. For
648 * uncompressed formats this can be fixed by computing the
649 * value from the frame size.
651 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
652 frame->dwMaxVideoFrameBufferSize = format->bpp
653 * frame->wWidth * frame->wHeight / 8;
655 /* Some bogus devices report dwMinFrameInterval equal to
656 * dwMaxFrameInterval and have dwFrameIntervalStep set to
657 * zero. Setting all null intervals to 1 fixes the problem and
658 * some other divisions by zero that could happen.
660 for (i = 0; i < n; ++i) {
661 interval = get_unaligned_le32(&buffer[26+4*i]);
662 *(*intervals)++ = interval ? interval : 1;
665 /* Make sure that the default frame interval stays between
668 n -= frame->bFrameIntervalType ? 1 : 2;
669 frame->dwDefaultFrameInterval =
670 min(frame->dwFrameInterval[n],
671 max(frame->dwFrameInterval[0],
672 frame->dwDefaultFrameInterval));
674 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
675 frame->bFrameIntervalType = 1;
676 frame->dwFrameInterval[0] =
677 frame->dwDefaultFrameInterval;
680 uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
681 frame->wWidth, frame->wHeight,
682 10000000/frame->dwDefaultFrameInterval,
683 (100000000/frame->dwDefaultFrameInterval)%10);
690 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
691 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
696 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
697 buffer[2] == UVC_VS_COLORFORMAT) {
699 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
700 "interface %d COLORFORMAT error\n",
702 alts->desc.bInterfaceNumber);
706 format->colorspace = uvc_colorspace(buffer[3]);
712 return buffer - start;
715 static int uvc_parse_streaming(struct uvc_device *dev,
716 struct usb_interface *intf)
718 struct uvc_streaming *streaming = NULL;
719 struct uvc_format *format;
720 struct uvc_frame *frame;
721 struct usb_host_interface *alts = &intf->altsetting[0];
722 unsigned char *_buffer, *buffer = alts->extra;
723 int _buflen, buflen = alts->extralen;
724 unsigned int nformats = 0, nframes = 0, nintervals = 0;
725 unsigned int size, i, n, p;
730 if (intf->cur_altsetting->desc.bInterfaceSubClass
731 != UVC_SC_VIDEOSTREAMING) {
732 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
733 "video streaming interface\n", dev->udev->devnum,
734 intf->altsetting[0].desc.bInterfaceNumber);
738 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
739 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
740 "claimed\n", dev->udev->devnum,
741 intf->altsetting[0].desc.bInterfaceNumber);
745 streaming = uvc_stream_new(dev, intf);
746 if (streaming == NULL) {
747 usb_driver_release_interface(&uvc_driver.driver, intf);
751 /* The Pico iMage webcam has its class-specific interface descriptors
752 * after the endpoint descriptors.
755 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
756 struct usb_host_endpoint *ep = &alts->endpoint[i];
758 if (ep->extralen == 0)
761 if (ep->extralen > 2 &&
762 ep->extra[1] == USB_DT_CS_INTERFACE) {
763 uvc_trace(UVC_TRACE_DESCR, "trying extra data "
764 "from endpoint %u.\n", i);
765 buffer = alts->endpoint[i].extra;
766 buflen = alts->endpoint[i].extralen;
772 /* Skip the standard interface descriptors. */
773 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
779 uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
780 "interface descriptors found.\n");
784 /* Parse the header descriptor. */
786 case UVC_VS_OUTPUT_HEADER:
787 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
791 case UVC_VS_INPUT_HEADER:
792 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
797 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
798 "%d HEADER descriptor not found.\n", dev->udev->devnum,
799 alts->desc.bInterfaceNumber);
803 p = buflen >= 4 ? buffer[3] : 0;
804 n = buflen >= size ? buffer[size-1] : 0;
806 if (buflen < size + p*n) {
807 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
808 "interface %d HEADER descriptor is invalid.\n",
809 dev->udev->devnum, alts->desc.bInterfaceNumber);
813 streaming->header.bNumFormats = p;
814 streaming->header.bEndpointAddress = buffer[6];
815 if (buffer[2] == UVC_VS_INPUT_HEADER) {
816 streaming->header.bmInfo = buffer[7];
817 streaming->header.bTerminalLink = buffer[8];
818 streaming->header.bStillCaptureMethod = buffer[9];
819 streaming->header.bTriggerSupport = buffer[10];
820 streaming->header.bTriggerUsage = buffer[11];
822 streaming->header.bTerminalLink = buffer[7];
824 streaming->header.bControlSize = n;
826 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
828 if (streaming->header.bmaControls == NULL) {
839 /* Count the format and frame descriptors. */
840 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
841 switch (_buffer[2]) {
842 case UVC_VS_FORMAT_UNCOMPRESSED:
843 case UVC_VS_FORMAT_MJPEG:
844 case UVC_VS_FORMAT_FRAME_BASED:
848 case UVC_VS_FORMAT_DV:
849 /* DV format has no frame descriptor. We will create a
850 * dummy frame descriptor with a dummy frame interval.
857 case UVC_VS_FORMAT_MPEG2TS:
858 case UVC_VS_FORMAT_STREAM_BASED:
859 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
860 "interface %d FORMAT %u is not supported.\n",
862 alts->desc.bInterfaceNumber, _buffer[2]);
865 case UVC_VS_FRAME_UNCOMPRESSED:
866 case UVC_VS_FRAME_MJPEG:
869 nintervals += _buffer[25] ? _buffer[25] : 3;
872 case UVC_VS_FRAME_FRAME_BASED:
875 nintervals += _buffer[21] ? _buffer[21] : 3;
879 _buflen -= _buffer[0];
880 _buffer += _buffer[0];
884 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
885 "%d has no supported formats defined.\n",
886 dev->udev->devnum, alts->desc.bInterfaceNumber);
890 size = nformats * sizeof(*format) + nframes * sizeof(*frame)
891 + nintervals * sizeof(*interval);
892 format = kzalloc(size, GFP_KERNEL);
893 if (format == NULL) {
898 frame = (struct uvc_frame *)&format[nformats];
899 interval = (u32 *)&frame[nframes];
901 streaming->format = format;
902 streaming->nformats = nformats;
904 /* Parse the format descriptors. */
905 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
907 case UVC_VS_FORMAT_UNCOMPRESSED:
908 case UVC_VS_FORMAT_MJPEG:
909 case UVC_VS_FORMAT_DV:
910 case UVC_VS_FORMAT_FRAME_BASED:
911 format->frame = frame;
912 ret = uvc_parse_format(dev, streaming, format,
913 &interval, buffer, buflen);
917 frame += format->nframes;
933 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
934 "%d has %u bytes of trailing descriptor garbage.\n",
935 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
937 /* Parse the alternate settings to find the maximum bandwidth. */
938 for (i = 0; i < intf->num_altsetting; ++i) {
939 struct usb_host_endpoint *ep;
940 alts = &intf->altsetting[i];
941 ep = uvc_find_endpoint(alts,
942 streaming->header.bEndpointAddress);
946 psize = le16_to_cpu(ep->desc.wMaxPacketSize);
947 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
948 if (psize > streaming->maxpsize)
949 streaming->maxpsize = psize;
952 list_add_tail(&streaming->list, &dev->streams);
956 usb_driver_release_interface(&uvc_driver.driver, intf);
957 uvc_stream_delete(streaming);
961 static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
962 unsigned int num_pads, unsigned int extra_size)
964 struct uvc_entity *entity;
965 unsigned int num_inputs;
969 extra_size = roundup(extra_size, sizeof(*entity->pads));
970 num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1;
971 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
973 entity = kzalloc(size, GFP_KERNEL);
980 entity->num_links = 0;
981 entity->num_pads = num_pads;
982 entity->pads = ((void *)(entity + 1)) + extra_size;
984 for (i = 0; i < num_inputs; ++i)
985 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
986 if (!UVC_ENTITY_IS_OTERM(entity))
987 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
989 entity->bNrInPins = num_inputs;
990 entity->baSourceID = (u8 *)(&entity->pads[num_pads]);
995 /* Parse vendor-specific extensions. */
996 static int uvc_parse_vendor_control(struct uvc_device *dev,
997 const unsigned char *buffer, int buflen)
999 struct usb_device *udev = dev->udev;
1000 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1001 struct uvc_entity *unit;
1005 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
1006 case 0x046d: /* Logitech */
1007 if (buffer[1] != 0x41 || buffer[2] != 0x01)
1010 /* Logitech implements several vendor specific functions
1011 * through vendor specific extension units (LXU).
1013 * The LXU descriptors are similar to XU descriptors
1014 * (see "USB Device Video Class for Video Devices", section
1015 * 3.7.2.6 "Extension Unit Descriptor") with the following
1018 * ----------------------------------------------------------
1019 * 0 bLength 1 Number
1020 * Size of this descriptor, in bytes: 24+p+n*2
1021 * ----------------------------------------------------------
1022 * 23+p+n bmControlsType N Bitmap
1023 * Individual bits in the set are defined:
1027 * This bitset is mapped exactly the same as bmControls.
1028 * ----------------------------------------------------------
1029 * 23+p+n*2 bReserved 1 Boolean
1030 * ----------------------------------------------------------
1031 * 24+p+n*2 iExtension 1 Index
1032 * Index of a string descriptor that describes this
1034 * ----------------------------------------------------------
1036 p = buflen >= 22 ? buffer[21] : 0;
1037 n = buflen >= 25 + p ? buffer[22+p] : 0;
1039 if (buflen < 25 + p + 2*n) {
1040 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1041 "interface %d EXTENSION_UNIT error\n",
1042 udev->devnum, alts->desc.bInterfaceNumber);
1046 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
1051 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
1052 unit->extension.bNumControls = buffer[20];
1053 memcpy(unit->baSourceID, &buffer[22], p);
1054 unit->extension.bControlSize = buffer[22+p];
1055 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1056 unit->extension.bmControlsType = (u8 *)unit + sizeof(*unit)
1058 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
1060 if (buffer[24+p+2*n] != 0)
1061 usb_string(udev, buffer[24+p+2*n], unit->name,
1062 sizeof(unit->name));
1064 sprintf(unit->name, "Extension %u", buffer[3]);
1066 list_add_tail(&unit->list, &dev->entities);
1074 static int uvc_parse_standard_control(struct uvc_device *dev,
1075 const unsigned char *buffer, int buflen)
1077 struct usb_device *udev = dev->udev;
1078 struct uvc_entity *unit, *term;
1079 struct usb_interface *intf;
1080 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1081 unsigned int i, n, p, len;
1084 switch (buffer[2]) {
1086 n = buflen >= 12 ? buffer[11] : 0;
1088 if (buflen < 12 + n) {
1089 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1090 "interface %d HEADER error\n", udev->devnum,
1091 alts->desc.bInterfaceNumber);
1095 dev->uvc_version = get_unaligned_le16(&buffer[3]);
1096 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
1098 /* Parse all USB Video Streaming interfaces. */
1099 for (i = 0; i < n; ++i) {
1100 intf = usb_ifnum_to_if(udev, buffer[12+i]);
1102 uvc_trace(UVC_TRACE_DESCR, "device %d "
1103 "interface %d doesn't exists\n",
1108 uvc_parse_streaming(dev, intf);
1112 case UVC_VC_INPUT_TERMINAL:
1114 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1115 "interface %d INPUT_TERMINAL error\n",
1116 udev->devnum, alts->desc.bInterfaceNumber);
1121 * Reject invalid terminal types that would cause issues:
1123 * - The high byte must be non-zero, otherwise it would be
1124 * confused with a unit.
1126 * - Bit 15 must be 0, as we use it internally as a terminal
1129 * Other unknown types are accepted.
1131 type = get_unaligned_le16(&buffer[4]);
1132 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
1133 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1134 "interface %d INPUT_TERMINAL %d has invalid "
1135 "type 0x%04x, skipping\n", udev->devnum,
1136 alts->desc.bInterfaceNumber,
1145 if (type == UVC_ITT_CAMERA) {
1146 n = buflen >= 15 ? buffer[14] : 0;
1149 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1150 n = buflen >= 9 ? buffer[8] : 0;
1151 p = buflen >= 10 + n ? buffer[9+n] : 0;
1155 if (buflen < len + n + p) {
1156 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1157 "interface %d INPUT_TERMINAL error\n",
1158 udev->devnum, alts->desc.bInterfaceNumber);
1162 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
1167 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
1168 term->camera.bControlSize = n;
1169 term->camera.bmControls = (u8 *)term + sizeof(*term);
1170 term->camera.wObjectiveFocalLengthMin =
1171 get_unaligned_le16(&buffer[8]);
1172 term->camera.wObjectiveFocalLengthMax =
1173 get_unaligned_le16(&buffer[10]);
1174 term->camera.wOcularFocalLength =
1175 get_unaligned_le16(&buffer[12]);
1176 memcpy(term->camera.bmControls, &buffer[15], n);
1177 } else if (UVC_ENTITY_TYPE(term) ==
1178 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
1179 term->media.bControlSize = n;
1180 term->media.bmControls = (u8 *)term + sizeof(*term);
1181 term->media.bTransportModeSize = p;
1182 term->media.bmTransportModes = (u8 *)term
1183 + sizeof(*term) + n;
1184 memcpy(term->media.bmControls, &buffer[9], n);
1185 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1189 usb_string(udev, buffer[7], term->name,
1190 sizeof(term->name));
1191 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
1192 sprintf(term->name, "Camera %u", buffer[3]);
1193 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
1194 sprintf(term->name, "Media %u", buffer[3]);
1196 sprintf(term->name, "Input %u", buffer[3]);
1198 list_add_tail(&term->list, &dev->entities);
1201 case UVC_VC_OUTPUT_TERMINAL:
1203 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1204 "interface %d OUTPUT_TERMINAL error\n",
1205 udev->devnum, alts->desc.bInterfaceNumber);
1209 /* Make sure the terminal type MSB is not null, otherwise it
1210 * could be confused with a unit.
1212 type = get_unaligned_le16(&buffer[4]);
1213 if ((type & 0xff00) == 0) {
1214 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1215 "interface %d OUTPUT_TERMINAL %d has invalid "
1216 "type 0x%04x, skipping\n", udev->devnum,
1217 alts->desc.bInterfaceNumber, buffer[3], type);
1221 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
1226 memcpy(term->baSourceID, &buffer[7], 1);
1229 usb_string(udev, buffer[8], term->name,
1230 sizeof(term->name));
1232 sprintf(term->name, "Output %u", buffer[3]);
1234 list_add_tail(&term->list, &dev->entities);
1237 case UVC_VC_SELECTOR_UNIT:
1238 p = buflen >= 5 ? buffer[4] : 0;
1240 if (buflen < 5 || buflen < 6 + p) {
1241 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1242 "interface %d SELECTOR_UNIT error\n",
1243 udev->devnum, alts->desc.bInterfaceNumber);
1247 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
1251 memcpy(unit->baSourceID, &buffer[5], p);
1253 if (buffer[5+p] != 0)
1254 usb_string(udev, buffer[5+p], unit->name,
1255 sizeof(unit->name));
1257 sprintf(unit->name, "Selector %u", buffer[3]);
1259 list_add_tail(&unit->list, &dev->entities);
1262 case UVC_VC_PROCESSING_UNIT:
1263 n = buflen >= 8 ? buffer[7] : 0;
1264 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1266 if (buflen < p + n) {
1267 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1268 "interface %d PROCESSING_UNIT error\n",
1269 udev->devnum, alts->desc.bInterfaceNumber);
1273 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
1277 memcpy(unit->baSourceID, &buffer[4], 1);
1278 unit->processing.wMaxMultiplier =
1279 get_unaligned_le16(&buffer[5]);
1280 unit->processing.bControlSize = buffer[7];
1281 unit->processing.bmControls = (u8 *)unit + sizeof(*unit);
1282 memcpy(unit->processing.bmControls, &buffer[8], n);
1283 if (dev->uvc_version >= 0x0110)
1284 unit->processing.bmVideoStandards = buffer[9+n];
1286 if (buffer[8+n] != 0)
1287 usb_string(udev, buffer[8+n], unit->name,
1288 sizeof(unit->name));
1290 sprintf(unit->name, "Processing %u", buffer[3]);
1292 list_add_tail(&unit->list, &dev->entities);
1295 case UVC_VC_EXTENSION_UNIT:
1296 p = buflen >= 22 ? buffer[21] : 0;
1297 n = buflen >= 24 + p ? buffer[22+p] : 0;
1299 if (buflen < 24 + p + n) {
1300 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1301 "interface %d EXTENSION_UNIT error\n",
1302 udev->devnum, alts->desc.bInterfaceNumber);
1306 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n);
1310 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
1311 unit->extension.bNumControls = buffer[20];
1312 memcpy(unit->baSourceID, &buffer[22], p);
1313 unit->extension.bControlSize = buffer[22+p];
1314 unit->extension.bmControls = (u8 *)unit + sizeof(*unit);
1315 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1317 if (buffer[23+p+n] != 0)
1318 usb_string(udev, buffer[23+p+n], unit->name,
1319 sizeof(unit->name));
1321 sprintf(unit->name, "Extension %u", buffer[3]);
1323 list_add_tail(&unit->list, &dev->entities);
1327 uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
1328 "descriptor (%u)\n", buffer[2]);
1335 static int uvc_parse_control(struct uvc_device *dev)
1337 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1338 unsigned char *buffer = alts->extra;
1339 int buflen = alts->extralen;
1342 /* Parse the default alternate setting only, as the UVC specification
1343 * defines a single alternate setting, the default alternate setting
1347 while (buflen > 2) {
1348 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1349 buffer[1] != USB_DT_CS_INTERFACE)
1350 goto next_descriptor;
1352 if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0)
1356 buflen -= buffer[0];
1357 buffer += buffer[0];
1360 /* Check if the optional status endpoint is present. Built-in iSight
1361 * webcams have an interrupt endpoint but spit proprietary data that
1362 * don't conform to the UVC status endpoint messages. Don't try to
1363 * handle the interrupt endpoint for those cameras.
1365 if (alts->desc.bNumEndpoints == 1 &&
1366 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
1367 struct usb_host_endpoint *ep = &alts->endpoint[0];
1368 struct usb_endpoint_descriptor *desc = &ep->desc;
1370 if (usb_endpoint_is_int_in(desc) &&
1371 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1372 desc->bInterval != 0) {
1373 uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
1374 "(addr %02x).\n", desc->bEndpointAddress);
1382 /* ------------------------------------------------------------------------
1387 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1388 * and containing the following units:
1390 * - one or more Output Terminals (USB Streaming or Display)
1391 * - zero or one Processing Unit
1392 * - zero, one or more single-input Selector Units
1393 * - zero or one multiple-input Selector Units, provided all inputs are
1394 * connected to input terminals
1395 * - zero, one or mode single-input Extension Units
1396 * - one or more Input Terminals (Camera, External or USB Streaming)
1398 * The terminal and units must match on of the following structures:
1400 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1401 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1402 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1404 * +---------+ +---------+ -> OTT_*(0)
1405 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1406 * +---------+ +---------+ -> OTT_*(n)
1408 * The Processing Unit and Extension Units can be in any order. Additional
1409 * Extension Units connected to the main chain as single-unit branches are
1410 * also supported. Single-input Selector Units are ignored.
1412 static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
1413 struct uvc_entity *entity)
1415 switch (UVC_ENTITY_TYPE(entity)) {
1416 case UVC_VC_EXTENSION_UNIT:
1417 if (uvc_trace_param & UVC_TRACE_PROBE)
1418 printk(KERN_CONT " <- XU %d", entity->id);
1420 if (entity->bNrInPins != 1) {
1421 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
1422 "than 1 input pin.\n", entity->id);
1428 case UVC_VC_PROCESSING_UNIT:
1429 if (uvc_trace_param & UVC_TRACE_PROBE)
1430 printk(KERN_CONT " <- PU %d", entity->id);
1432 if (chain->processing != NULL) {
1433 uvc_trace(UVC_TRACE_DESCR, "Found multiple "
1434 "Processing Units in chain.\n");
1438 chain->processing = entity;
1441 case UVC_VC_SELECTOR_UNIT:
1442 if (uvc_trace_param & UVC_TRACE_PROBE)
1443 printk(KERN_CONT " <- SU %d", entity->id);
1445 /* Single-input selector units are ignored. */
1446 if (entity->bNrInPins == 1)
1449 if (chain->selector != NULL) {
1450 uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
1451 "Units in chain.\n");
1455 chain->selector = entity;
1458 case UVC_ITT_VENDOR_SPECIFIC:
1459 case UVC_ITT_CAMERA:
1460 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1461 if (uvc_trace_param & UVC_TRACE_PROBE)
1462 printk(KERN_CONT " <- IT %d\n", entity->id);
1466 case UVC_OTT_VENDOR_SPECIFIC:
1467 case UVC_OTT_DISPLAY:
1468 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1469 if (uvc_trace_param & UVC_TRACE_PROBE)
1470 printk(KERN_CONT " OT %d", entity->id);
1474 case UVC_TT_STREAMING:
1475 if (UVC_ENTITY_IS_ITERM(entity)) {
1476 if (uvc_trace_param & UVC_TRACE_PROBE)
1477 printk(KERN_CONT " <- IT %d\n", entity->id);
1479 if (uvc_trace_param & UVC_TRACE_PROBE)
1480 printk(KERN_CONT " OT %d", entity->id);
1486 uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
1487 "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
1491 list_add_tail(&entity->chain, &chain->entities);
1495 static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
1496 struct uvc_entity *entity, struct uvc_entity *prev)
1498 struct uvc_entity *forward;
1506 forward = uvc_entity_by_reference(chain->dev, entity->id,
1508 if (forward == NULL)
1510 if (forward == prev)
1512 if (forward->chain.next || forward->chain.prev) {
1513 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1514 "entity %d already in chain.\n", forward->id);
1518 switch (UVC_ENTITY_TYPE(forward)) {
1519 case UVC_VC_EXTENSION_UNIT:
1520 if (forward->bNrInPins != 1) {
1521 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d "
1522 "has more than 1 input pin.\n",
1527 list_add_tail(&forward->chain, &chain->entities);
1528 if (uvc_trace_param & UVC_TRACE_PROBE) {
1530 printk(KERN_CONT " (->");
1532 printk(KERN_CONT " XU %d", forward->id);
1537 case UVC_OTT_VENDOR_SPECIFIC:
1538 case UVC_OTT_DISPLAY:
1539 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1540 case UVC_TT_STREAMING:
1541 if (UVC_ENTITY_IS_ITERM(forward)) {
1542 uvc_trace(UVC_TRACE_DESCR, "Unsupported input "
1543 "terminal %u.\n", forward->id);
1547 list_add_tail(&forward->chain, &chain->entities);
1548 if (uvc_trace_param & UVC_TRACE_PROBE) {
1550 printk(KERN_CONT " (->");
1552 printk(KERN_CONT " OT %d", forward->id);
1559 printk(KERN_CONT ")");
1564 static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
1565 struct uvc_entity **_entity)
1567 struct uvc_entity *entity = *_entity;
1568 struct uvc_entity *term;
1569 int id = -EINVAL, i;
1571 switch (UVC_ENTITY_TYPE(entity)) {
1572 case UVC_VC_EXTENSION_UNIT:
1573 case UVC_VC_PROCESSING_UNIT:
1574 id = entity->baSourceID[0];
1577 case UVC_VC_SELECTOR_UNIT:
1578 /* Single-input selector units are ignored. */
1579 if (entity->bNrInPins == 1) {
1580 id = entity->baSourceID[0];
1584 if (uvc_trace_param & UVC_TRACE_PROBE)
1585 printk(KERN_CONT " <- IT");
1587 chain->selector = entity;
1588 for (i = 0; i < entity->bNrInPins; ++i) {
1589 id = entity->baSourceID[i];
1590 term = uvc_entity_by_id(chain->dev, id);
1591 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1592 uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
1593 "input %d isn't connected to an "
1594 "input terminal\n", entity->id, i);
1598 if (term->chain.next || term->chain.prev) {
1599 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1600 "entity %d already in chain.\n",
1605 if (uvc_trace_param & UVC_TRACE_PROBE)
1606 printk(KERN_CONT " %d", term->id);
1608 list_add_tail(&term->chain, &chain->entities);
1609 uvc_scan_chain_forward(chain, term, entity);
1612 if (uvc_trace_param & UVC_TRACE_PROBE)
1613 printk(KERN_CONT "\n");
1618 case UVC_ITT_VENDOR_SPECIFIC:
1619 case UVC_ITT_CAMERA:
1620 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1621 case UVC_OTT_VENDOR_SPECIFIC:
1622 case UVC_OTT_DISPLAY:
1623 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1624 case UVC_TT_STREAMING:
1625 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
1634 entity = uvc_entity_by_id(chain->dev, id);
1635 if (entity == NULL) {
1636 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1637 "unknown entity %d.\n", id);
1645 static int uvc_scan_chain(struct uvc_video_chain *chain,
1646 struct uvc_entity *term)
1648 struct uvc_entity *entity, *prev;
1650 uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:");
1655 while (entity != NULL) {
1656 /* Entity must not be part of an existing chain */
1657 if (entity->chain.next || entity->chain.prev) {
1658 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1659 "entity %d already in chain.\n", entity->id);
1663 /* Process entity */
1664 if (uvc_scan_chain_entity(chain, entity) < 0)
1668 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1673 if (uvc_scan_chain_backward(chain, &entity) < 0)
1680 static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1683 struct uvc_entity *term;
1684 unsigned int nterms = 0;
1687 list_for_each_entry(term, terms, chain) {
1688 if (!UVC_ENTITY_IS_TERM(term) ||
1689 UVC_TERM_DIRECTION(term) != dir)
1693 p += sprintf(p, ",");
1694 if (++nterms >= 4) {
1695 p += sprintf(p, "...");
1698 p += sprintf(p, "%u", term->id);
1704 static const char *uvc_print_chain(struct uvc_video_chain *chain)
1706 static char buffer[43];
1709 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
1710 p += sprintf(p, " -> ");
1711 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
1716 static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1718 struct uvc_video_chain *chain;
1720 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1724 INIT_LIST_HEAD(&chain->entities);
1725 mutex_init(&chain->ctrl_mutex);
1727 v4l2_prio_init(&chain->prio);
1733 * Fallback heuristic for devices that don't connect units and terminals in a
1736 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1737 * to fail, but if we just take the entities we can find and put them together
1738 * in the most sensible chain we can think of, turns out they do work anyway.
1739 * Note: This heuristic assumes there is a single chain.
1741 * At the time of writing, devices known to have such a broken chain are
1742 * - Acer Integrated Camera (5986:055a)
1743 * - Realtek rtl157a7 (0bda:57a7)
1745 static int uvc_scan_fallback(struct uvc_device *dev)
1747 struct uvc_video_chain *chain;
1748 struct uvc_entity *iterm = NULL;
1749 struct uvc_entity *oterm = NULL;
1750 struct uvc_entity *entity;
1751 struct uvc_entity *prev;
1754 * Start by locating the input and output terminals. We only support
1755 * devices with exactly one of each for now.
1757 list_for_each_entry(entity, &dev->entities, list) {
1758 if (UVC_ENTITY_IS_ITERM(entity)) {
1764 if (UVC_ENTITY_IS_OTERM(entity)) {
1771 if (iterm == NULL || oterm == NULL)
1774 /* Allocate the chain and fill it. */
1775 chain = uvc_alloc_chain(dev);
1779 if (uvc_scan_chain_entity(chain, oterm) < 0)
1785 * Add all Processing and Extension Units with two pads. The order
1786 * doesn't matter much, use reverse list traversal to connect units in
1787 * UVC descriptor order as we build the chain from output to input. This
1788 * leads to units appearing in the order meant by the manufacturer for
1789 * the cameras known to require this heuristic.
1791 list_for_each_entry_reverse(entity, &dev->entities, list) {
1792 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1793 entity->type != UVC_VC_EXTENSION_UNIT)
1796 if (entity->num_pads != 2)
1799 if (uvc_scan_chain_entity(chain, entity) < 0)
1802 prev->baSourceID[0] = entity->id;
1806 if (uvc_scan_chain_entity(chain, iterm) < 0)
1809 prev->baSourceID[0] = iterm->id;
1811 list_add_tail(&chain->list, &dev->chains);
1813 uvc_trace(UVC_TRACE_PROBE,
1814 "Found a video chain by fallback heuristic (%s).\n",
1815 uvc_print_chain(chain));
1825 * Scan the device for video chains and register video devices.
1827 * Chains are scanned starting at their output terminals and walked backwards.
1829 static int uvc_scan_device(struct uvc_device *dev)
1831 struct uvc_video_chain *chain;
1832 struct uvc_entity *term;
1834 list_for_each_entry(term, &dev->entities, list) {
1835 if (!UVC_ENTITY_IS_OTERM(term))
1838 /* If the terminal is already included in a chain, skip it.
1839 * This can happen for chains that have multiple output
1840 * terminals, where all output terminals beside the first one
1841 * will be inserted in the chain in forward scans.
1843 if (term->chain.next || term->chain.prev)
1846 chain = uvc_alloc_chain(dev);
1850 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1852 if (uvc_scan_chain(chain, term) < 0) {
1857 uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n",
1858 uvc_print_chain(chain));
1860 list_add_tail(&chain->list, &dev->chains);
1863 if (list_empty(&dev->chains))
1864 uvc_scan_fallback(dev);
1866 if (list_empty(&dev->chains)) {
1867 uvc_printk(KERN_INFO, "No valid video chain found.\n");
1874 /* ------------------------------------------------------------------------
1875 * Video device registration and unregistration
1879 * Delete the UVC device.
1881 * Called by the kernel when the last reference to the uvc_device structure
1884 * As this function is called after or during disconnect(), all URBs have
1885 * already been cancelled by the USB core. There is no need to kill the
1886 * interrupt URB manually.
1888 static void uvc_delete(struct kref *kref)
1890 struct uvc_device *dev = container_of(kref, struct uvc_device, ref);
1891 struct list_head *p, *n;
1893 uvc_status_cleanup(dev);
1894 uvc_ctrl_cleanup_device(dev);
1896 usb_put_intf(dev->intf);
1897 usb_put_dev(dev->udev);
1899 #ifdef CONFIG_MEDIA_CONTROLLER
1900 media_device_cleanup(&dev->mdev);
1903 list_for_each_safe(p, n, &dev->chains) {
1904 struct uvc_video_chain *chain;
1905 chain = list_entry(p, struct uvc_video_chain, list);
1909 list_for_each_safe(p, n, &dev->entities) {
1910 struct uvc_entity *entity;
1911 entity = list_entry(p, struct uvc_entity, list);
1912 #ifdef CONFIG_MEDIA_CONTROLLER
1913 uvc_mc_cleanup_entity(entity);
1918 list_for_each_safe(p, n, &dev->streams) {
1919 struct uvc_streaming *streaming;
1920 streaming = list_entry(p, struct uvc_streaming, list);
1921 usb_driver_release_interface(&uvc_driver.driver,
1923 uvc_stream_delete(streaming);
1929 static void uvc_release(struct video_device *vdev)
1931 struct uvc_streaming *stream = video_get_drvdata(vdev);
1932 struct uvc_device *dev = stream->dev;
1934 kref_put(&dev->ref, uvc_delete);
1938 * Unregister the video devices.
1940 static void uvc_unregister_video(struct uvc_device *dev)
1942 struct uvc_streaming *stream;
1944 list_for_each_entry(stream, &dev->streams, list) {
1945 if (!video_is_registered(&stream->vdev))
1948 video_unregister_device(&stream->vdev);
1949 video_unregister_device(&stream->meta.vdev);
1951 uvc_debugfs_cleanup_stream(stream);
1954 uvc_status_unregister(dev);
1957 v4l2_device_unregister(&dev->vdev);
1958 #ifdef CONFIG_MEDIA_CONTROLLER
1959 if (media_devnode_is_registered(dev->mdev.devnode))
1960 media_device_unregister(&dev->mdev);
1964 int uvc_register_video_device(struct uvc_device *dev,
1965 struct uvc_streaming *stream,
1966 struct video_device *vdev,
1967 struct uvc_video_queue *queue,
1968 enum v4l2_buf_type type,
1969 const struct v4l2_file_operations *fops,
1970 const struct v4l2_ioctl_ops *ioctl_ops)
1974 /* Initialize the video buffers queue. */
1975 ret = uvc_queue_init(queue, type, !uvc_no_drop_param);
1979 /* Register the device with V4L. */
1982 * We already hold a reference to dev->udev. The video device will be
1983 * unregistered before the reference is released, so we don't need to
1986 vdev->v4l2_dev = &dev->vdev;
1988 vdev->ioctl_ops = ioctl_ops;
1989 vdev->release = uvc_release;
1990 vdev->prio = &stream->chain->prio;
1991 if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1992 vdev->vfl_dir = VFL_DIR_TX;
1994 vdev->vfl_dir = VFL_DIR_RX;
1997 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1999 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
2001 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2002 vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
2004 case V4L2_BUF_TYPE_META_CAPTURE:
2005 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
2009 strscpy(vdev->name, dev->name, sizeof(vdev->name));
2012 * Set the driver data before calling video_register_device, otherwise
2013 * the file open() handler might race us.
2015 video_set_drvdata(vdev, stream);
2017 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
2019 uvc_printk(KERN_ERR, "Failed to register %s device (%d).\n",
2020 v4l2_type_names[type], ret);
2024 kref_get(&dev->ref);
2028 static int uvc_register_video(struct uvc_device *dev,
2029 struct uvc_streaming *stream)
2033 /* Initialize the streaming interface with default parameters. */
2034 ret = uvc_video_init(stream);
2036 uvc_printk(KERN_ERR, "Failed to initialize the device (%d).\n",
2041 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2042 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE
2043 | V4L2_CAP_META_CAPTURE;
2045 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
2047 uvc_debugfs_init_stream(stream);
2049 /* Register the device with V4L. */
2050 return uvc_register_video_device(dev, stream, &stream->vdev,
2051 &stream->queue, stream->type,
2052 &uvc_fops, &uvc_ioctl_ops);
2056 * Register all video devices in all chains.
2058 static int uvc_register_terms(struct uvc_device *dev,
2059 struct uvc_video_chain *chain)
2061 struct uvc_streaming *stream;
2062 struct uvc_entity *term;
2065 list_for_each_entry(term, &chain->entities, chain) {
2066 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
2069 stream = uvc_stream_by_id(dev, term->id);
2070 if (stream == NULL) {
2071 uvc_printk(KERN_INFO, "No streaming interface found "
2072 "for terminal %u.", term->id);
2076 stream->chain = chain;
2077 ret = uvc_register_video(dev, stream);
2081 /* Register a metadata node, but ignore a possible failure,
2082 * complete registration of video nodes anyway.
2084 uvc_meta_register(stream);
2086 term->vdev = &stream->vdev;
2092 static int uvc_register_chains(struct uvc_device *dev)
2094 struct uvc_video_chain *chain;
2097 list_for_each_entry(chain, &dev->chains, list) {
2098 ret = uvc_register_terms(dev, chain);
2102 #ifdef CONFIG_MEDIA_CONTROLLER
2103 ret = uvc_mc_register_entities(chain);
2105 uvc_printk(KERN_INFO,
2106 "Failed to register entities (%d).\n", ret);
2113 /* ------------------------------------------------------------------------
2114 * USB probe, disconnect, suspend and resume
2117 static const struct uvc_device_info uvc_quirk_none = { 0 };
2119 static int uvc_probe(struct usb_interface *intf,
2120 const struct usb_device_id *id)
2122 struct usb_device *udev = interface_to_usbdev(intf);
2123 struct uvc_device *dev;
2124 const struct uvc_device_info *info =
2125 (const struct uvc_device_info *)id->driver_info;
2129 if (id->idVendor && id->idProduct)
2130 uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
2131 "(%04x:%04x)\n", udev->devpath, id->idVendor,
2134 uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
2137 /* Allocate memory for the device and initialize it. */
2138 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2142 INIT_LIST_HEAD(&dev->entities);
2143 INIT_LIST_HEAD(&dev->chains);
2144 INIT_LIST_HEAD(&dev->streams);
2145 kref_init(&dev->ref);
2146 atomic_set(&dev->nmappings, 0);
2147 mutex_init(&dev->lock);
2149 dev->udev = usb_get_dev(udev);
2150 dev->intf = usb_get_intf(intf);
2151 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
2152 dev->info = info ? info : &uvc_quirk_none;
2153 dev->quirks = uvc_quirks_param == -1
2154 ? dev->info->quirks : uvc_quirks_param;
2156 if (udev->product != NULL)
2157 strscpy(dev->name, udev->product, sizeof(dev->name));
2159 snprintf(dev->name, sizeof(dev->name),
2160 "UVC Camera (%04x:%04x)",
2161 le16_to_cpu(udev->descriptor.idVendor),
2162 le16_to_cpu(udev->descriptor.idProduct));
2165 * Add iFunction or iInterface to names when available as additional
2166 * distinguishers between interfaces. iFunction is prioritized over
2167 * iInterface which matches Windows behavior at the point of writing.
2169 if (intf->intf_assoc && intf->intf_assoc->iFunction != 0)
2170 function = intf->intf_assoc->iFunction;
2172 function = intf->cur_altsetting->desc.iInterface;
2173 if (function != 0) {
2176 strlcat(dev->name, ": ", sizeof(dev->name));
2177 len = strlen(dev->name);
2178 usb_string(udev, function, dev->name + len,
2179 sizeof(dev->name) - len);
2182 /* Initialize the media device. */
2183 #ifdef CONFIG_MEDIA_CONTROLLER
2184 dev->mdev.dev = &intf->dev;
2185 strscpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2187 strscpy(dev->mdev.serial, udev->serial,
2188 sizeof(dev->mdev.serial));
2189 usb_make_path(udev, dev->mdev.bus_info, sizeof(dev->mdev.bus_info));
2190 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
2191 media_device_init(&dev->mdev);
2193 dev->vdev.mdev = &dev->mdev;
2196 /* Parse the Video Class control descriptor. */
2197 if (uvc_parse_control(dev) < 0) {
2198 uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
2203 uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n",
2204 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2205 udev->product ? udev->product : "<unnamed>",
2206 le16_to_cpu(udev->descriptor.idVendor),
2207 le16_to_cpu(udev->descriptor.idProduct));
2209 if (dev->quirks != dev->info->quirks) {
2210 uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module "
2211 "parameter for testing purpose.\n", dev->quirks);
2212 uvc_printk(KERN_INFO, "Please report required quirks to the "
2213 "linux-uvc-devel mailing list.\n");
2216 /* Register the V4L2 device. */
2217 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2220 /* Initialize controls. */
2221 if (uvc_ctrl_init_device(dev) < 0)
2224 /* Scan the device for video chains. */
2225 if (uvc_scan_device(dev) < 0)
2228 /* Register video device nodes. */
2229 if (uvc_register_chains(dev) < 0)
2232 #ifdef CONFIG_MEDIA_CONTROLLER
2233 /* Register the media device node */
2234 if (media_device_register(&dev->mdev) < 0)
2237 /* Save our data pointer in the interface data. */
2238 usb_set_intfdata(intf, dev);
2240 /* Initialize the interrupt URB. */
2241 if ((ret = uvc_status_init(dev)) < 0) {
2242 uvc_printk(KERN_INFO, "Unable to initialize the status "
2243 "endpoint (%d), status interrupt will not be "
2244 "supported.\n", ret);
2247 uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
2248 usb_enable_autosuspend(udev);
2252 uvc_unregister_video(dev);
2253 kref_put(&dev->ref, uvc_delete);
2257 static void uvc_disconnect(struct usb_interface *intf)
2259 struct uvc_device *dev = usb_get_intfdata(intf);
2261 /* Set the USB interface data to NULL. This can be done outside the
2262 * lock, as there's no other reader.
2264 usb_set_intfdata(intf, NULL);
2266 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2267 UVC_SC_VIDEOSTREAMING)
2270 uvc_unregister_video(dev);
2271 kref_put(&dev->ref, uvc_delete);
2274 static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2276 struct uvc_device *dev = usb_get_intfdata(intf);
2277 struct uvc_streaming *stream;
2279 uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
2280 intf->cur_altsetting->desc.bInterfaceNumber);
2282 /* Controls are cached on the fly so they don't need to be saved. */
2283 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2284 UVC_SC_VIDEOCONTROL) {
2285 mutex_lock(&dev->lock);
2287 uvc_status_stop(dev);
2288 mutex_unlock(&dev->lock);
2292 list_for_each_entry(stream, &dev->streams, list) {
2293 if (stream->intf == intf)
2294 return uvc_video_suspend(stream);
2297 uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface "
2302 static int __uvc_resume(struct usb_interface *intf, int reset)
2304 struct uvc_device *dev = usb_get_intfdata(intf);
2305 struct uvc_streaming *stream;
2308 uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
2309 intf->cur_altsetting->desc.bInterfaceNumber);
2311 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2312 UVC_SC_VIDEOCONTROL) {
2314 ret = uvc_ctrl_restore_values(dev);
2319 mutex_lock(&dev->lock);
2321 ret = uvc_status_start(dev, GFP_NOIO);
2322 mutex_unlock(&dev->lock);
2327 list_for_each_entry(stream, &dev->streams, list) {
2328 if (stream->intf == intf) {
2329 ret = uvc_video_resume(stream, reset);
2331 uvc_queue_streamoff(&stream->queue,
2332 stream->queue.queue.type);
2337 uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface "
2342 static int uvc_resume(struct usb_interface *intf)
2344 return __uvc_resume(intf, 0);
2347 static int uvc_reset_resume(struct usb_interface *intf)
2349 return __uvc_resume(intf, 1);
2352 /* ------------------------------------------------------------------------
2356 static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp)
2358 if (uvc_clock_param == CLOCK_MONOTONIC)
2359 return sprintf(buffer, "CLOCK_MONOTONIC");
2361 return sprintf(buffer, "CLOCK_REALTIME");
2364 static int uvc_clock_param_set(const char *val, const struct kernel_param *kp)
2366 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2367 val += strlen("clock_");
2369 if (strcasecmp(val, "monotonic") == 0)
2370 uvc_clock_param = CLOCK_MONOTONIC;
2371 else if (strcasecmp(val, "realtime") == 0)
2372 uvc_clock_param = CLOCK_REALTIME;
2379 module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2380 &uvc_clock_param, S_IRUGO|S_IWUSR);
2381 MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
2382 module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR);
2383 MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
2384 module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR);
2385 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2386 module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
2387 MODULE_PARM_DESC(quirks, "Forced device quirks");
2388 module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
2389 MODULE_PARM_DESC(trace, "Trace level bitmask");
2390 module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);
2391 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2393 /* ------------------------------------------------------------------------
2394 * Driver initialization and cleanup
2397 static const struct uvc_device_info uvc_quirk_probe_minmax = {
2398 .quirks = UVC_QUIRK_PROBE_MINMAX,
2401 static const struct uvc_device_info uvc_quirk_fix_bandwidth = {
2402 .quirks = UVC_QUIRK_FIX_BANDWIDTH,
2405 static const struct uvc_device_info uvc_quirk_probe_def = {
2406 .quirks = UVC_QUIRK_PROBE_DEF,
2409 static const struct uvc_device_info uvc_quirk_stream_no_fid = {
2410 .quirks = UVC_QUIRK_STREAM_NO_FID,
2413 static const struct uvc_device_info uvc_quirk_force_y8 = {
2414 .quirks = UVC_QUIRK_FORCE_Y8,
2417 #define UVC_INFO_QUIRK(q) (kernel_ulong_t)&(struct uvc_device_info){.quirks = q}
2418 #define UVC_INFO_META(m) (kernel_ulong_t)&(struct uvc_device_info) \
2422 * The Logitech cameras listed below have their interface class set to
2423 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2424 * though they are compliant.
2426 static const struct usb_device_id uvc_ids[] = {
2427 /* LogiLink Wireless Webcam */
2428 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2429 | USB_DEVICE_ID_MATCH_INT_INFO,
2431 .idProduct = 0xa91a,
2432 .bInterfaceClass = USB_CLASS_VIDEO,
2433 .bInterfaceSubClass = 1,
2434 .bInterfaceProtocol = 0,
2435 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2436 /* Genius eFace 2025 */
2437 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2438 | USB_DEVICE_ID_MATCH_INT_INFO,
2440 .idProduct = 0x706e,
2441 .bInterfaceClass = USB_CLASS_VIDEO,
2442 .bInterfaceSubClass = 1,
2443 .bInterfaceProtocol = 0,
2444 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2445 /* Microsoft Lifecam NX-6000 */
2446 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2447 | USB_DEVICE_ID_MATCH_INT_INFO,
2449 .idProduct = 0x00f8,
2450 .bInterfaceClass = USB_CLASS_VIDEO,
2451 .bInterfaceSubClass = 1,
2452 .bInterfaceProtocol = 0,
2453 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2454 /* Microsoft Lifecam NX-3000 */
2455 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2456 | USB_DEVICE_ID_MATCH_INT_INFO,
2458 .idProduct = 0x0721,
2459 .bInterfaceClass = USB_CLASS_VIDEO,
2460 .bInterfaceSubClass = 1,
2461 .bInterfaceProtocol = 0,
2462 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2463 /* Microsoft Lifecam VX-7000 */
2464 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2465 | USB_DEVICE_ID_MATCH_INT_INFO,
2467 .idProduct = 0x0723,
2468 .bInterfaceClass = USB_CLASS_VIDEO,
2469 .bInterfaceSubClass = 1,
2470 .bInterfaceProtocol = 0,
2471 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2472 /* Logitech Quickcam Fusion */
2473 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2474 | USB_DEVICE_ID_MATCH_INT_INFO,
2476 .idProduct = 0x08c1,
2477 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2478 .bInterfaceSubClass = 1,
2479 .bInterfaceProtocol = 0 },
2480 /* Logitech Quickcam Orbit MP */
2481 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2482 | USB_DEVICE_ID_MATCH_INT_INFO,
2484 .idProduct = 0x08c2,
2485 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2486 .bInterfaceSubClass = 1,
2487 .bInterfaceProtocol = 0 },
2488 /* Logitech Quickcam Pro for Notebook */
2489 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2490 | USB_DEVICE_ID_MATCH_INT_INFO,
2492 .idProduct = 0x08c3,
2493 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2494 .bInterfaceSubClass = 1,
2495 .bInterfaceProtocol = 0 },
2496 /* Logitech Quickcam Pro 5000 */
2497 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2498 | USB_DEVICE_ID_MATCH_INT_INFO,
2500 .idProduct = 0x08c5,
2501 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2502 .bInterfaceSubClass = 1,
2503 .bInterfaceProtocol = 0 },
2504 /* Logitech Quickcam OEM Dell Notebook */
2505 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2506 | USB_DEVICE_ID_MATCH_INT_INFO,
2508 .idProduct = 0x08c6,
2509 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2510 .bInterfaceSubClass = 1,
2511 .bInterfaceProtocol = 0 },
2512 /* Logitech Quickcam OEM Cisco VT Camera II */
2513 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2514 | USB_DEVICE_ID_MATCH_INT_INFO,
2516 .idProduct = 0x08c7,
2517 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2518 .bInterfaceSubClass = 1,
2519 .bInterfaceProtocol = 0 },
2520 /* Logitech HD Pro Webcam C920 */
2521 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2522 | USB_DEVICE_ID_MATCH_INT_INFO,
2524 .idProduct = 0x082d,
2525 .bInterfaceClass = USB_CLASS_VIDEO,
2526 .bInterfaceSubClass = 1,
2527 .bInterfaceProtocol = 0,
2528 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) },
2529 /* Chicony CNF7129 (Asus EEE 100HE) */
2530 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2531 | USB_DEVICE_ID_MATCH_INT_INFO,
2533 .idProduct = 0xb071,
2534 .bInterfaceClass = USB_CLASS_VIDEO,
2535 .bInterfaceSubClass = 1,
2536 .bInterfaceProtocol = 0,
2537 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTRICT_FRAME_RATE) },
2538 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2539 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2540 | USB_DEVICE_ID_MATCH_INT_INFO,
2542 .idProduct = 0x3820,
2543 .bInterfaceClass = USB_CLASS_VIDEO,
2544 .bInterfaceSubClass = 1,
2545 .bInterfaceProtocol = 0,
2546 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2547 /* Dell XPS m1530 */
2548 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2549 | USB_DEVICE_ID_MATCH_INT_INFO,
2551 .idProduct = 0x2640,
2552 .bInterfaceClass = USB_CLASS_VIDEO,
2553 .bInterfaceSubClass = 1,
2554 .bInterfaceProtocol = 0,
2555 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2556 /* Dell SP2008WFP Monitor */
2557 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2558 | USB_DEVICE_ID_MATCH_INT_INFO,
2560 .idProduct = 0x2641,
2561 .bInterfaceClass = USB_CLASS_VIDEO,
2562 .bInterfaceSubClass = 1,
2563 .bInterfaceProtocol = 0,
2564 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2565 /* Dell Alienware X51 */
2566 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2567 | USB_DEVICE_ID_MATCH_INT_INFO,
2569 .idProduct = 0x2643,
2570 .bInterfaceClass = USB_CLASS_VIDEO,
2571 .bInterfaceSubClass = 1,
2572 .bInterfaceProtocol = 0,
2573 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2574 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2575 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2576 | USB_DEVICE_ID_MATCH_INT_INFO,
2578 .idProduct = 0x264a,
2579 .bInterfaceClass = USB_CLASS_VIDEO,
2580 .bInterfaceSubClass = 1,
2581 .bInterfaceProtocol = 0,
2582 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2583 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2584 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2585 | USB_DEVICE_ID_MATCH_INT_INFO,
2587 .idProduct = 0x7670,
2588 .bInterfaceClass = USB_CLASS_VIDEO,
2589 .bInterfaceSubClass = 1,
2590 .bInterfaceProtocol = 0,
2591 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2592 /* Apple Built-In iSight */
2593 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2594 | USB_DEVICE_ID_MATCH_INT_INFO,
2596 .idProduct = 0x8501,
2597 .bInterfaceClass = USB_CLASS_VIDEO,
2598 .bInterfaceSubClass = 1,
2599 .bInterfaceProtocol = 0,
2600 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2601 | UVC_QUIRK_BUILTIN_ISIGHT) },
2602 /* Apple Built-In iSight via iBridge */
2603 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2604 | USB_DEVICE_ID_MATCH_INT_INFO,
2606 .idProduct = 0x8600,
2607 .bInterfaceClass = USB_CLASS_VIDEO,
2608 .bInterfaceSubClass = 1,
2609 .bInterfaceProtocol = 0,
2610 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2611 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2612 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2613 | USB_DEVICE_ID_MATCH_INT_INFO,
2615 .idProduct = 0x0403,
2616 .bInterfaceClass = USB_CLASS_VIDEO,
2617 .bInterfaceSubClass = 1,
2618 .bInterfaceProtocol = 0,
2619 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2620 /* Genesys Logic USB 2.0 PC Camera */
2621 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2622 | USB_DEVICE_ID_MATCH_INT_INFO,
2624 .idProduct = 0x0505,
2625 .bInterfaceClass = USB_CLASS_VIDEO,
2626 .bInterfaceSubClass = 1,
2627 .bInterfaceProtocol = 0,
2628 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2629 /* Hercules Classic Silver */
2630 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2631 | USB_DEVICE_ID_MATCH_INT_INFO,
2633 .idProduct = 0x300c,
2634 .bInterfaceClass = USB_CLASS_VIDEO,
2635 .bInterfaceSubClass = 1,
2636 .bInterfaceProtocol = 0,
2637 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2639 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2640 | USB_DEVICE_ID_MATCH_INT_INFO,
2642 .idProduct = 0x332d,
2643 .bInterfaceClass = USB_CLASS_VIDEO,
2644 .bInterfaceSubClass = 1,
2645 .bInterfaceProtocol = 0,
2646 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2647 /* ViMicro - Minoru3D */
2648 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2649 | USB_DEVICE_ID_MATCH_INT_INFO,
2651 .idProduct = 0x3410,
2652 .bInterfaceClass = USB_CLASS_VIDEO,
2653 .bInterfaceSubClass = 1,
2654 .bInterfaceProtocol = 0,
2655 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2656 /* ViMicro Venus - Minoru3D */
2657 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2658 | USB_DEVICE_ID_MATCH_INT_INFO,
2660 .idProduct = 0x3420,
2661 .bInterfaceClass = USB_CLASS_VIDEO,
2662 .bInterfaceSubClass = 1,
2663 .bInterfaceProtocol = 0,
2664 .driver_info = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
2665 /* Ophir Optronics - SPCAM 620U */
2666 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2667 | USB_DEVICE_ID_MATCH_INT_INFO,
2669 .idProduct = 0x0555,
2670 .bInterfaceClass = USB_CLASS_VIDEO,
2671 .bInterfaceSubClass = 1,
2672 .bInterfaceProtocol = 0,
2673 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2675 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2676 | USB_DEVICE_ID_MATCH_INT_INFO,
2678 .idProduct = 0x0004,
2679 .bInterfaceClass = USB_CLASS_VIDEO,
2680 .bInterfaceSubClass = 1,
2681 .bInterfaceProtocol = 0,
2682 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2683 | UVC_QUIRK_PROBE_DEF) },
2684 /* IMC Networks (Medion Akoya) */
2685 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2686 | USB_DEVICE_ID_MATCH_INT_INFO,
2688 .idProduct = 0x5103,
2689 .bInterfaceClass = USB_CLASS_VIDEO,
2690 .bInterfaceSubClass = 1,
2691 .bInterfaceProtocol = 0,
2692 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2693 /* JMicron USB2.0 XGA WebCam */
2694 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2695 | USB_DEVICE_ID_MATCH_INT_INFO,
2697 .idProduct = 0x0310,
2698 .bInterfaceClass = USB_CLASS_VIDEO,
2699 .bInterfaceSubClass = 1,
2700 .bInterfaceProtocol = 0,
2701 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2702 /* Syntek (HP Spartan) */
2703 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2704 | USB_DEVICE_ID_MATCH_INT_INFO,
2706 .idProduct = 0x5212,
2707 .bInterfaceClass = USB_CLASS_VIDEO,
2708 .bInterfaceSubClass = 1,
2709 .bInterfaceProtocol = 0,
2710 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2711 /* Syntek (Samsung Q310) */
2712 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2713 | USB_DEVICE_ID_MATCH_INT_INFO,
2715 .idProduct = 0x5931,
2716 .bInterfaceClass = USB_CLASS_VIDEO,
2717 .bInterfaceSubClass = 1,
2718 .bInterfaceProtocol = 0,
2719 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2720 /* Syntek (Packard Bell EasyNote MX52 */
2721 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2722 | USB_DEVICE_ID_MATCH_INT_INFO,
2724 .idProduct = 0x8a12,
2725 .bInterfaceClass = USB_CLASS_VIDEO,
2726 .bInterfaceSubClass = 1,
2727 .bInterfaceProtocol = 0,
2728 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2729 /* Syntek (Asus F9SG) */
2730 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2731 | USB_DEVICE_ID_MATCH_INT_INFO,
2733 .idProduct = 0x8a31,
2734 .bInterfaceClass = USB_CLASS_VIDEO,
2735 .bInterfaceSubClass = 1,
2736 .bInterfaceProtocol = 0,
2737 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2738 /* Syntek (Asus U3S) */
2739 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2740 | USB_DEVICE_ID_MATCH_INT_INFO,
2742 .idProduct = 0x8a33,
2743 .bInterfaceClass = USB_CLASS_VIDEO,
2744 .bInterfaceSubClass = 1,
2745 .bInterfaceProtocol = 0,
2746 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2747 /* Syntek (JAOtech Smart Terminal) */
2748 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2749 | USB_DEVICE_ID_MATCH_INT_INFO,
2751 .idProduct = 0x8a34,
2752 .bInterfaceClass = USB_CLASS_VIDEO,
2753 .bInterfaceSubClass = 1,
2754 .bInterfaceProtocol = 0,
2755 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2757 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2758 | USB_DEVICE_ID_MATCH_INT_INFO,
2760 .idProduct = 0x0202,
2761 .bInterfaceClass = USB_CLASS_VIDEO,
2762 .bInterfaceSubClass = 1,
2763 .bInterfaceProtocol = 0,
2764 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2765 /* Lenovo Thinkpad SL400/SL500 */
2766 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2767 | USB_DEVICE_ID_MATCH_INT_INFO,
2769 .idProduct = 0x480b,
2770 .bInterfaceClass = USB_CLASS_VIDEO,
2771 .bInterfaceSubClass = 1,
2772 .bInterfaceProtocol = 0,
2773 .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
2774 /* Aveo Technology USB 2.0 Camera */
2775 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2776 | USB_DEVICE_ID_MATCH_INT_INFO,
2778 .idProduct = 0x0306,
2779 .bInterfaceClass = USB_CLASS_VIDEO,
2780 .bInterfaceSubClass = 1,
2781 .bInterfaceProtocol = 0,
2782 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2783 | UVC_QUIRK_PROBE_EXTRAFIELDS) },
2784 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2785 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2786 | USB_DEVICE_ID_MATCH_INT_INFO,
2788 .idProduct = 0x0516,
2789 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2790 .bInterfaceSubClass = 1,
2791 .bInterfaceProtocol = 0 },
2792 /* Ecamm Pico iMage */
2793 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2794 | USB_DEVICE_ID_MATCH_INT_INFO,
2796 .idProduct = 0xcafe,
2797 .bInterfaceClass = USB_CLASS_VIDEO,
2798 .bInterfaceSubClass = 1,
2799 .bInterfaceProtocol = 0,
2800 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_EXTRAFIELDS) },
2801 /* Manta MM-353 Plako */
2802 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2803 | USB_DEVICE_ID_MATCH_INT_INFO,
2805 .idProduct = 0x3188,
2806 .bInterfaceClass = USB_CLASS_VIDEO,
2807 .bInterfaceSubClass = 1,
2808 .bInterfaceProtocol = 0,
2809 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2810 /* FSC WebCam V30S */
2811 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2812 | USB_DEVICE_ID_MATCH_INT_INFO,
2814 .idProduct = 0x3288,
2815 .bInterfaceClass = USB_CLASS_VIDEO,
2816 .bInterfaceSubClass = 1,
2817 .bInterfaceProtocol = 0,
2818 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2819 /* Arkmicro unbranded */
2820 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2821 | USB_DEVICE_ID_MATCH_INT_INFO,
2823 .idProduct = 0x3290,
2824 .bInterfaceClass = USB_CLASS_VIDEO,
2825 .bInterfaceSubClass = 1,
2826 .bInterfaceProtocol = 0,
2827 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_def },
2828 /* The Imaging Source USB CCD cameras */
2829 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2830 | USB_DEVICE_ID_MATCH_INT_INFO,
2832 .idProduct = 0x8102,
2833 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2834 .bInterfaceSubClass = 1,
2835 .bInterfaceProtocol = 0 },
2836 /* Bodelin ProScopeHR */
2837 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2838 | USB_DEVICE_ID_MATCH_DEV_HI
2839 | USB_DEVICE_ID_MATCH_INT_INFO,
2841 .idProduct = 0x1000,
2842 .bcdDevice_hi = 0x0126,
2843 .bInterfaceClass = USB_CLASS_VIDEO,
2844 .bInterfaceSubClass = 1,
2845 .bInterfaceProtocol = 0,
2846 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_STATUS_INTERVAL) },
2847 /* MSI StarCam 370i */
2848 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2849 | USB_DEVICE_ID_MATCH_INT_INFO,
2851 .idProduct = 0x2951,
2852 .bInterfaceClass = USB_CLASS_VIDEO,
2853 .bInterfaceSubClass = 1,
2854 .bInterfaceProtocol = 0,
2855 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2856 /* Generalplus Technology Inc. 808 Camera */
2857 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2858 | USB_DEVICE_ID_MATCH_INT_INFO,
2860 .idProduct = 0x2002,
2861 .bInterfaceClass = USB_CLASS_VIDEO,
2862 .bInterfaceSubClass = 1,
2863 .bInterfaceProtocol = 0,
2864 .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax },
2865 /* SiGma Micro USB Web Camera */
2866 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2867 | USB_DEVICE_ID_MATCH_INT_INFO,
2869 .idProduct = 0x3000,
2870 .bInterfaceClass = USB_CLASS_VIDEO,
2871 .bInterfaceSubClass = 1,
2872 .bInterfaceProtocol = 0,
2873 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_PROBE_MINMAX
2874 | UVC_QUIRK_IGNORE_SELECTOR_UNIT) },
2875 /* Oculus VR Positional Tracker DK2 */
2876 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2877 | USB_DEVICE_ID_MATCH_INT_INFO,
2879 .idProduct = 0x0201,
2880 .bInterfaceClass = USB_CLASS_VIDEO,
2881 .bInterfaceSubClass = 1,
2882 .bInterfaceProtocol = 0,
2883 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
2884 /* Oculus VR Rift Sensor */
2885 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2886 | USB_DEVICE_ID_MATCH_INT_INFO,
2888 .idProduct = 0x0211,
2889 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2890 .bInterfaceSubClass = 1,
2891 .bInterfaceProtocol = 0,
2892 .driver_info = (kernel_ulong_t)&uvc_quirk_force_y8 },
2893 /* GEO Semiconductor GC6500 */
2894 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2895 | USB_DEVICE_ID_MATCH_INT_INFO,
2897 .idProduct = 0x4d53,
2898 .bInterfaceClass = USB_CLASS_VIDEO,
2899 .bInterfaceSubClass = 1,
2900 .bInterfaceProtocol = 0,
2901 .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
2902 /* Intel RealSense D4M */
2903 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2904 | USB_DEVICE_ID_MATCH_INT_INFO,
2906 .idProduct = 0x0b03,
2907 .bInterfaceClass = USB_CLASS_VIDEO,
2908 .bInterfaceSubClass = 1,
2909 .bInterfaceProtocol = 0,
2910 .driver_info = UVC_INFO_META(V4L2_META_FMT_D4XX) },
2911 /* Generic USB Video Class */
2912 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
2913 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
2917 MODULE_DEVICE_TABLE(usb, uvc_ids);
2919 struct uvc_driver uvc_driver = {
2923 .disconnect = uvc_disconnect,
2924 .suspend = uvc_suspend,
2925 .resume = uvc_resume,
2926 .reset_resume = uvc_reset_resume,
2927 .id_table = uvc_ids,
2928 .supports_autosuspend = 1,
2932 static int __init uvc_init(void)
2938 ret = usb_register(&uvc_driver.driver);
2940 uvc_debugfs_cleanup();
2944 printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n");
2948 static void __exit uvc_cleanup(void)
2950 usb_deregister(&uvc_driver.driver);
2951 uvc_debugfs_cleanup();
2954 module_init(uvc_init);
2955 module_exit(uvc_cleanup);
2957 MODULE_AUTHOR(DRIVER_AUTHOR);
2958 MODULE_DESCRIPTION(DRIVER_DESC);
2959 MODULE_LICENSE("GPL");
2960 MODULE_VERSION(DRIVER_VERSION);