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[media] Documentation: Intel SR300 Depth camera INZI format
[mirror_ubuntu-eoan-kernel.git] / drivers / media / usb / uvc / uvc_driver.c
CommitLineData
c0efd232
LP		 1/*
2 * uvc_driver.c -- USB Video Class driver
3 *
11fc5baf
LP		 4 * Copyright (C) 2005-2010
5 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
c0efd232
LP		 6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 */
13
66ede038 14#include <linux/atomic.h>
c0efd232 15#include <linux/kernel.h>
c0efd232
LP		 16#include <linux/list.h>
17#include <linux/module.h>
5a0e3ad6 18#include <linux/slab.h>
c0efd232
LP		 19#include <linux/usb.h>
20#include <linux/videodev2.h>
21#include <linux/vmalloc.h>
22#include <linux/wait.h>
fd3e5824 23#include <linux/version.h>
9bc6218d 24#include <asm/unaligned.h>
c0efd232
LP		 25
26#include <media/v4l2-common.h>
27
28#include "uvcvideo.h"
29
11fc5baf
LP		 30#define DRIVER_AUTHOR "Laurent Pinchart " \
31 "<laurent.pinchart@ideasonboard.com>"
c0efd232 32#define DRIVER_DESC "USB Video Class driver"
c0efd232 33
310fe524 34unsigned int uvc_clock_param = CLOCK_MONOTONIC;
5d0fd3c8 35unsigned int uvc_hw_timestamps_param;
0fbd8ee6 36unsigned int uvc_no_drop_param;
73de3592 37static unsigned int uvc_quirks_param = -1;
c0efd232 38unsigned int uvc_trace_param;
b232a012 39unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
c0efd232
LP		 40
41/* ------------------------------------------------------------------------
2c2d264b 42 * Video formats
c0efd232
LP		 43 */
44
45static struct uvc_format_desc uvc_fmts[] = {
46 {
47 .name = "YUV 4:2:2 (YUYV)",
48 .guid = UVC_GUID_FORMAT_YUY2,
49 .fcc = V4L2_PIX_FMT_YUYV,
50 },
68f194e0
DR		 51 {
52 .name = "YUV 4:2:2 (YUYV)",
53 .guid = UVC_GUID_FORMAT_YUY2_ISIGHT,
54 .fcc = V4L2_PIX_FMT_YUYV,
55 },
c0efd232
LP		 56 {
57 .name = "YUV 4:2:0 (NV12)",
58 .guid = UVC_GUID_FORMAT_NV12,
59 .fcc = V4L2_PIX_FMT_NV12,
60 },
61 {
62 .name = "MJPEG",
63 .guid = UVC_GUID_FORMAT_MJPEG,
64 .fcc = V4L2_PIX_FMT_MJPEG,
65 },
66 {
67 .name = "YVU 4:2:0 (YV12)",
68 .guid = UVC_GUID_FORMAT_YV12,
69 .fcc = V4L2_PIX_FMT_YVU420,
70 },
71 {
72 .name = "YUV 4:2:0 (I420)",
73 .guid = UVC_GUID_FORMAT_I420,
74 .fcc = V4L2_PIX_FMT_YUV420,
75 },
7225a1dc
HG		 76 {
77 .name = "YUV 4:2:0 (M420)",
78 .guid = UVC_GUID_FORMAT_M420,
79 .fcc = V4L2_PIX_FMT_M420,
80 },
c0efd232
LP		 81 {
82 .name = "YUV 4:2:2 (UYVY)",
83 .guid = UVC_GUID_FORMAT_UYVY,
84 .fcc = V4L2_PIX_FMT_UYVY,
85 },
86 {
ca47e719 87 .name = "Greyscale 8-bit (Y800)",
c0efd232
LP		 88 .guid = UVC_GUID_FORMAT_Y800,
89 .fcc = V4L2_PIX_FMT_GREY,
90 },
61421206 91 {
ca47e719
SM		 92 .name = "Greyscale 8-bit (Y8 )",
93 .guid = UVC_GUID_FORMAT_Y8,
94 .fcc = V4L2_PIX_FMT_GREY,
95 },
96 {
97 .name = "Greyscale 10-bit (Y10 )",
98 .guid = UVC_GUID_FORMAT_Y10,
99 .fcc = V4L2_PIX_FMT_Y10,
100 },
101 {
102 .name = "Greyscale 12-bit (Y12 )",
103 .guid = UVC_GUID_FORMAT_Y12,
104 .fcc = V4L2_PIX_FMT_Y12,
105 },
106 {
107 .name = "Greyscale 16-bit (Y16 )",
61421206
LP		 108 .guid = UVC_GUID_FORMAT_Y16,
109 .fcc = V4L2_PIX_FMT_Y16,
110 },
c0efd232 111 {
e72ed08e 112 .name = "BGGR Bayer (BY8 )",
c0efd232
LP		 113 .guid = UVC_GUID_FORMAT_BY8,
114 .fcc = V4L2_PIX_FMT_SBGGR8,
115 },
e72ed08e
ET		 116 {
117 .name = "BGGR Bayer (BA81)",
118 .guid = UVC_GUID_FORMAT_BA81,
119 .fcc = V4L2_PIX_FMT_SBGGR8,
120 },
121 {
122 .name = "GBRG Bayer (GBRG)",
123 .guid = UVC_GUID_FORMAT_GBRG,
124 .fcc = V4L2_PIX_FMT_SGBRG8,
125 },
126 {
127 .name = "GRBG Bayer (GRBG)",
128 .guid = UVC_GUID_FORMAT_GRBG,
129 .fcc = V4L2_PIX_FMT_SGRBG8,
130 },
131 {
132 .name = "RGGB Bayer (RGGB)",
133 .guid = UVC_GUID_FORMAT_RGGB,
134 .fcc = V4L2_PIX_FMT_SRGGB8,
135 },
50791079
LP		 136 {
137 .name = "RGB565",
138 .guid = UVC_GUID_FORMAT_RGBP,
139 .fcc = V4L2_PIX_FMT_RGB565,
140 },
1b8dc322
WM		 141 {
142 .name = "BGR 8:8:8 (BGR3)",
143 .guid = UVC_GUID_FORMAT_BGR3,
144 .fcc = V4L2_PIX_FMT_BGR24,
145 },
25ad8a8d
SL		 146 {
147 .name = "H.264",
148 .guid = UVC_GUID_FORMAT_H264,
149 .fcc = V4L2_PIX_FMT_H264,
150 },
5d8d8db8
AG		 151 {
152 .name = "Greyscale 8 L/R (Y8I)",
153 .guid = UVC_GUID_FORMAT_Y8I,
154 .fcc = V4L2_PIX_FMT_Y8I,
155 },
156 {
157 .name = "Greyscale 12 L/R (Y12I)",
158 .guid = UVC_GUID_FORMAT_Y12I,
159 .fcc = V4L2_PIX_FMT_Y12I,
160 },
161 {
162 .name = "Depth data 16-bit (Z16)",
163 .guid = UVC_GUID_FORMAT_Z16,
164 .fcc = V4L2_PIX_FMT_Z16,
165 },
166 {
167 .name = "Bayer 10-bit (SRGGB10P)",
168 .guid = UVC_GUID_FORMAT_RW10,
169 .fcc = V4L2_PIX_FMT_SRGGB10P,
170 },
eb165a20
ET		 171 {
172 .name = "Bayer 16-bit (SBGGR16)",
173 .guid = UVC_GUID_FORMAT_BG16,
174 .fcc = V4L2_PIX_FMT_SBGGR16,
175 },
176 {
177 .name = "Bayer 16-bit (SGBRG16)",
178 .guid = UVC_GUID_FORMAT_GB16,
179 .fcc = V4L2_PIX_FMT_SGBRG16,
180 },
181 {
182 .name = "Bayer 16-bit (SRGGB16)",
183 .guid = UVC_GUID_FORMAT_RG16,
184 .fcc = V4L2_PIX_FMT_SRGGB16,
185 },
186 {
187 .name = "Bayer 16-bit (SGRBG16)",
188 .guid = UVC_GUID_FORMAT_GR16,
189 .fcc = V4L2_PIX_FMT_SGRBG16,
190 },
c0efd232
LP		 191};
192
193/* ------------------------------------------------------------------------
194 * Utility functions
195 */
196
197struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts,
198 __u8 epaddr)
199{
200 struct usb_host_endpoint *ep;
201 unsigned int i;
202
203 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
204 ep = &alts->endpoint[i];
205 if (ep->desc.bEndpointAddress == epaddr)
206 return ep;
207 }
208
209 return NULL;
210}
211
212static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16])
213{
214 unsigned int len = ARRAY_SIZE(uvc_fmts);
215 unsigned int i;
216
217 for (i = 0; i < len; ++i) {
218 if (memcmp(guid, uvc_fmts[i].guid, 16) == 0)
219 return &uvc_fmts[i];
220 }
221
222 return NULL;
223}
224
225static __u32 uvc_colorspace(const __u8 primaries)
226{
227 static const __u8 colorprimaries[] = {
228 0,
229 V4L2_COLORSPACE_SRGB,
230 V4L2_COLORSPACE_470_SYSTEM_M,
231 V4L2_COLORSPACE_470_SYSTEM_BG,
232 V4L2_COLORSPACE_SMPTE170M,
233 V4L2_COLORSPACE_SMPTE240M,
234 };
235
236 if (primaries < ARRAY_SIZE(colorprimaries))
237 return colorprimaries[primaries];
238
239 return 0;
240}
241
242/* Simplify a fraction using a simple continued fraction decomposition. The
243 * idea here is to convert fractions such as 333333/10000000 to 1/30 using
244 * 32 bit arithmetic only. The algorithm is not perfect and relies upon two
245 * arbitrary parameters to remove non-significative terms from the simple
246 * continued fraction decomposition. Using 8 and 333 for n_terms and threshold
247 * respectively seems to give nice results.
248 */
249void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
250 unsigned int n_terms, unsigned int threshold)
251{
252 uint32_t *an;
253 uint32_t x, y, r;
254 unsigned int i, n;
255
256 an = kmalloc(n_terms * sizeof *an, GFP_KERNEL);
257 if (an == NULL)
258 return;
259
260 /* Convert the fraction to a simple continued fraction. See
261 * http://mathforum.org/dr.math/faq/faq.fractions.html
262 * Stop if the current term is bigger than or equal to the given
263 * threshold.
264 */
265 x = *numerator;
266 y = *denominator;
267
268 for (n = 0; n < n_terms && y != 0; ++n) {
269 an[n] = x / y;
270 if (an[n] >= threshold) {
271 if (n < 2)
272 n++;
273 break;
274 }
275
276 r = x - an[n] * y;
277 x = y;
278 y = r;
279 }
280
281 /* Expand the simple continued fraction back to an integer fraction. */
282 x = 0;
283 y = 1;
284
285 for (i = n; i > 0; --i) {
286 r = y;
287 y = an[i-1] * y + x;
288 x = r;
289 }
290
291 *numerator = y;
292 *denominator = x;
293 kfree(an);
294}
295
296/* Convert a fraction to a frame interval in 100ns multiples. The idea here is
297 * to compute numerator / denominator * 10000000 using 32 bit fixed point
298 * arithmetic only.
299 */
300uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator)
301{
302 uint32_t multiplier;
303
304 /* Saturate the result if the operation would overflow. */
305 if (denominator == 0 ||
306 numerator/denominator >= ((uint32_t)-1)/10000000)
307 return (uint32_t)-1;
308
309 /* Divide both the denominator and the multiplier by two until
310 * numerator * multiplier doesn't overflow. If anyone knows a better
311 * algorithm please let me know.
312 */
313 multiplier = 10000000;
314 while (numerator > ((uint32_t)-1)/multiplier) {
315 multiplier /= 2;
316 denominator /= 2;
317 }
318
319 return denominator ? numerator * multiplier / denominator : 0;
320}
321
322/* ------------------------------------------------------------------------
323 * Terminal and unit management
324 */
325
4ffc2d89 326struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
c0efd232
LP		 327{
328 struct uvc_entity *entity;
329
330 list_for_each_entry(entity, &dev->entities, list) {
331 if (entity->id == id)
332 return entity;
333 }
334
335 return NULL;
336}
337
338static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev,
339 int id, struct uvc_entity *entity)
340{
341 unsigned int i;
342
343 if (entity == NULL)
344 entity = list_entry(&dev->entities, struct uvc_entity, list);
345
346 list_for_each_entry_continue(entity, &dev->entities, list) {
8ca5a639
LP		 347 for (i = 0; i < entity->bNrInPins; ++i)
348 if (entity->baSourceID[i] == id)
c0efd232 349 return entity;
c0efd232
LP		 350 }
351
352 return NULL;
353}
354
8e113595
LP		 355static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id)
356{
357 struct uvc_streaming *stream;
358
359 list_for_each_entry(stream, &dev->streams, list) {
360 if (stream->header.bTerminalLink == id)
361 return stream;
362 }
363
364 return NULL;
365}
366
c0efd232 367/* ------------------------------------------------------------------------
8e113595 368 * Descriptors parsing
c0efd232
LP		 369 */
370
371static int uvc_parse_format(struct uvc_device *dev,
372 struct uvc_streaming *streaming, struct uvc_format *format,
373 __u32 **intervals, unsigned char *buffer, int buflen)
374{
375 struct usb_interface *intf = streaming->intf;
376 struct usb_host_interface *alts = intf->cur_altsetting;
377 struct uvc_format_desc *fmtdesc;
378 struct uvc_frame *frame;
379 const unsigned char *start = buffer;
e1b78a33 380 unsigned int width_multiplier = 1;
c0efd232
LP		 381 unsigned int interval;
382 unsigned int i, n;
383 __u8 ftype;
384
385 format->type = buffer[2];
386 format->index = buffer[3];
387
388 switch (buffer[2]) {
b482d923
LP		 389 case UVC_VS_FORMAT_UNCOMPRESSED:
390 case UVC_VS_FORMAT_FRAME_BASED:
391 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
233548a2 392 if (buflen < n) {
b2d9cc42 393 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 394 "interface %d FORMAT error\n",
395 dev->udev->devnum,
396 alts->desc.bInterfaceNumber);
397 return -EINVAL;
398 }
399
400 /* Find the format descriptor from its GUID. */
401 fmtdesc = uvc_format_by_guid(&buffer[5]);
402
403 if (fmtdesc != NULL) {
d0ebf307 404 strlcpy(format->name, fmtdesc->name,
c0efd232
LP		 405 sizeof format->name);
406 format->fcc = fmtdesc->fcc;
407 } else {
36bd883e
LP		 408 uvc_printk(KERN_INFO, "Unknown video format %pUl\n",
409 &buffer[5]);
410 snprintf(format->name, sizeof(format->name), "%pUl\n",
411 &buffer[5]);
c0efd232
LP		 412 format->fcc = 0;
413 }
414
415 format->bpp = buffer[21];
e1b78a33
PZ		 416
417 /* Some devices report a format that doesn't match what they
418 * really send.
419 */
420 if (dev->quirks & UVC_QUIRK_FORCE_Y8) {
421 if (format->fcc == V4L2_PIX_FMT_YUYV) {
422 strlcpy(format->name, "Greyscale 8-bit (Y8 )",
423 sizeof(format->name));
424 format->fcc = V4L2_PIX_FMT_GREY;
425 format->bpp = 8;
426 width_multiplier = 2;
427 }
428 }
429
b482d923
LP		 430 if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) {
431 ftype = UVC_VS_FRAME_UNCOMPRESSED;
c0efd232 432 } else {
b482d923 433 ftype = UVC_VS_FRAME_FRAME_BASED;
c0efd232
LP		 434 if (buffer[27])
435 format->flags = UVC_FMT_FLAG_COMPRESSED;
436 }
437 break;
438
b482d923 439 case UVC_VS_FORMAT_MJPEG:
c0efd232 440 if (buflen < 11) {
b2d9cc42 441 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 442 "interface %d FORMAT error\n",
443 dev->udev->devnum,
444 alts->desc.bInterfaceNumber);
445 return -EINVAL;
446 }
447
d0ebf307 448 strlcpy(format->name, "MJPEG", sizeof format->name);
c0efd232
LP		 449 format->fcc = V4L2_PIX_FMT_MJPEG;
450 format->flags = UVC_FMT_FLAG_COMPRESSED;
451 format->bpp = 0;
b482d923 452 ftype = UVC_VS_FRAME_MJPEG;
c0efd232
LP		 453 break;
454
b482d923 455 case UVC_VS_FORMAT_DV:
c0efd232 456 if (buflen < 9) {
b2d9cc42 457 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 458 "interface %d FORMAT error\n",
459 dev->udev->devnum,
460 alts->desc.bInterfaceNumber);
461 return -EINVAL;
462 }
463
464 switch (buffer[8] & 0x7f) {
465 case 0:
d0ebf307 466 strlcpy(format->name, "SD-DV", sizeof format->name);
c0efd232
LP		 467 break;
468 case 1:
d0ebf307 469 strlcpy(format->name, "SDL-DV", sizeof format->name);
c0efd232
LP		 470 break;
471 case 2:
d0ebf307 472 strlcpy(format->name, "HD-DV", sizeof format->name);
c0efd232
LP		 473 break;
474 default:
b2d9cc42 475 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 476 "interface %d: unknown DV format %u\n",
477 dev->udev->devnum,
478 alts->desc.bInterfaceNumber, buffer[8]);
479 return -EINVAL;
480 }
481
d0ebf307 482 strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz",
c0efd232
LP		 483 sizeof format->name);
484
485 format->fcc = V4L2_PIX_FMT_DV;
486 format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM;
487 format->bpp = 0;
488 ftype = 0;
489
490 /* Create a dummy frame descriptor. */
491 frame = &format->frame[0];
492 memset(&format->frame[0], 0, sizeof format->frame[0]);
493 frame->bFrameIntervalType = 1;
494 frame->dwDefaultFrameInterval = 1;
495 frame->dwFrameInterval = *intervals;
496 *(*intervals)++ = 1;
497 format->nframes = 1;
498 break;
499
b482d923
LP		 500 case UVC_VS_FORMAT_MPEG2TS:
501 case UVC_VS_FORMAT_STREAM_BASED:
c0efd232
LP		 502 /* Not supported yet. */
503 default:
b2d9cc42 504 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 505 "interface %d unsupported format %u\n",
506 dev->udev->devnum, alts->desc.bInterfaceNumber,
507 buffer[2]);
508 return -EINVAL;
509 }
510
511 uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
512
513 buflen -= buffer[0];
514 buffer += buffer[0];
515
516 /* Parse the frame descriptors. Only uncompressed, MJPEG and frame
517 * based formats have frame descriptors.
518 */
c4ed8c66
LP		 519 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
520 buffer[2] == ftype) {
078f8947 521 frame = &format->frame[format->nframes];
b482d923 522 if (ftype != UVC_VS_FRAME_FRAME_BASED)
c0efd232
LP		 523 n = buflen > 25 ? buffer[25] : 0;
524 else
525 n = buflen > 21 ? buffer[21] : 0;
526
527 n = n ? n : 3;
528
529 if (buflen < 26 + 4*n) {
b2d9cc42 530 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 531 "interface %d FRAME error\n", dev->udev->devnum,
532 alts->desc.bInterfaceNumber);
533 return -EINVAL;
534 }
535
536 frame->bFrameIndex = buffer[3];
537 frame->bmCapabilities = buffer[4];
e1b78a33
PZ		 538 frame->wWidth = get_unaligned_le16(&buffer[5])
539 * width_multiplier;
9bc6218d
MH		 540 frame->wHeight = get_unaligned_le16(&buffer[7]);
541 frame->dwMinBitRate = get_unaligned_le32(&buffer[9]);
542 frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]);
b482d923 543 if (ftype != UVC_VS_FRAME_FRAME_BASED) {
c0efd232 544 frame->dwMaxVideoFrameBufferSize =
9bc6218d 545 get_unaligned_le32(&buffer[17]);
c0efd232 546 frame->dwDefaultFrameInterval =
9bc6218d 547 get_unaligned_le32(&buffer[21]);
c0efd232
LP		 548 frame->bFrameIntervalType = buffer[25];
549 } else {
550 frame->dwMaxVideoFrameBufferSize = 0;
551 frame->dwDefaultFrameInterval =
9bc6218d 552 get_unaligned_le32(&buffer[17]);
c0efd232
LP		 553 frame->bFrameIntervalType = buffer[21];
554 }
555 frame->dwFrameInterval = *intervals;
556
557 /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize
558 * completely. Observed behaviours range from setting the
2c2d264b 559 * value to 1.1x the actual frame size to hardwiring the
c0efd232
LP		 560 * 16 low bits to 0. This results in a higher than necessary
561 * memory usage as well as a wrong image size information. For
562 * uncompressed formats this can be fixed by computing the
563 * value from the frame size.
564 */
565 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED))
566 frame->dwMaxVideoFrameBufferSize = format->bpp
567 * frame->wWidth * frame->wHeight / 8;
568
569 /* Some bogus devices report dwMinFrameInterval equal to
570 * dwMaxFrameInterval and have dwFrameIntervalStep set to
571 * zero. Setting all null intervals to 1 fixes the problem and
2c2d264b 572 * some other divisions by zero that could happen.
c0efd232
LP		 573 */
574 for (i = 0; i < n; ++i) {
9bc6218d 575 interval = get_unaligned_le32(&buffer[26+4*i]);
c0efd232
LP		 576 *(*intervals)++ = interval ? interval : 1;
577 }
578
579 /* Make sure that the default frame interval stays between
580 * the boundaries.
581 */
582 n -= frame->bFrameIntervalType ? 1 : 2;
583 frame->dwDefaultFrameInterval =
584 min(frame->dwFrameInterval[n],
585 max(frame->dwFrameInterval[0],
586 frame->dwDefaultFrameInterval));
587
86d8b6ab
LP		 588 if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) {
589 frame->bFrameIntervalType = 1;
590 frame->dwFrameInterval[0] =
591 frame->dwDefaultFrameInterval;
592 }
593
c0efd232
LP		 594 uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
595 frame->wWidth, frame->wHeight,
596 10000000/frame->dwDefaultFrameInterval,
597 (100000000/frame->dwDefaultFrameInterval)%10);
598
078f8947 599 format->nframes++;
c0efd232
LP		 600 buflen -= buffer[0];
601 buffer += buffer[0];
602 }
603
c4ed8c66
LP		 604 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
605 buffer[2] == UVC_VS_STILL_IMAGE_FRAME) {
c0efd232
LP		 606 buflen -= buffer[0];
607 buffer += buffer[0];
608 }
609
c4ed8c66
LP		 610 if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
611 buffer[2] == UVC_VS_COLORFORMAT) {
c0efd232 612 if (buflen < 6) {
b2d9cc42 613 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
c0efd232
LP		 614 "interface %d COLORFORMAT error\n",
615 dev->udev->devnum,
616 alts->desc.bInterfaceNumber);
617 return -EINVAL;
618 }
619
620 format->colorspace = uvc_colorspace(buffer[3]);
621
622 buflen -= buffer[0];
623 buffer += buffer[0];
624 }
625
626 return buffer - start;
627}
628
629static int uvc_parse_streaming(struct uvc_device *dev,
630 struct usb_interface *intf)
631{
632 struct uvc_streaming *streaming = NULL;
633 struct uvc_format *format;
634 struct uvc_frame *frame;
635 struct usb_host_interface *alts = &intf->altsetting[0];
636 unsigned char *_buffer, *buffer = alts->extra;
637 int _buflen, buflen = alts->extralen;
638 unsigned int nformats = 0, nframes = 0, nintervals = 0;
639 unsigned int size, i, n, p;
640 __u32 *interval;
641 __u16 psize;
642 int ret = -EINVAL;
643
644 if (intf->cur_altsetting->desc.bInterfaceSubClass
b482d923 645 != UVC_SC_VIDEOSTREAMING) {
c0efd232
LP		 646 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
647 "video streaming interface\n", dev->udev->devnum,
648 intf->altsetting[0].desc.bInterfaceNumber);
649 return -EINVAL;
650 }
651
652 if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
653 uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
654 "claimed\n", dev->udev->devnum,
655 intf->altsetting[0].desc.bInterfaceNumber);
656 return -EINVAL;
657 }
658
659 streaming = kzalloc(sizeof *streaming, GFP_KERNEL);
660 if (streaming == NULL) {
661 usb_driver_release_interface(&uvc_driver.driver, intf);
662 return -EINVAL;
663 }
664
665 mutex_init(&streaming->mutex);
35f02a68 666 streaming->dev = dev;
c0efd232
LP		 667 streaming->intf = usb_get_intf(intf);
668 streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
669
670 /* The Pico iMage webcam has its class-specific interface descriptors
671 * after the endpoint descriptors.
672 */
673 if (buflen == 0) {
674 for (i = 0; i < alts->desc.bNumEndpoints; ++i) {
675 struct usb_host_endpoint *ep = &alts->endpoint[i];
676
677 if (ep->extralen == 0)
678 continue;
679
680 if (ep->extralen > 2 &&
681 ep->extra[1] == USB_DT_CS_INTERFACE) {
682 uvc_trace(UVC_TRACE_DESCR, "trying extra data "
683 "from endpoint %u.\n", i);
684 buffer = alts->endpoint[i].extra;
685 buflen = alts->endpoint[i].extralen;
686 break;
687 }
688 }
689 }
690
691 /* Skip the standard interface descriptors. */
692 while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) {
693 buflen -= buffer[0];
694 buffer += buffer[0];
695 }
696
697 if (buflen <= 2) {
698 uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
699 "interface descriptors found.\n");
700 goto error;
701 }
702
703 /* Parse the header descriptor. */
ff924203 704 switch (buffer[2]) {
b482d923 705 case UVC_VS_OUTPUT_HEADER:
ff924203
LP		 706 streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
707 size = 9;
708 break;
709
b482d923 710 case UVC_VS_INPUT_HEADER:
ff924203
LP		 711 streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
712 size = 13;
713 break;
714
715 default:
c0efd232 716 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
ff924203
LP		 717 "%d HEADER descriptor not found.\n", dev->udev->devnum,
718 alts->desc.bInterfaceNumber);
c0efd232 719 goto error;
ff924203 720 }
c0efd232 721
ff924203
LP		 722 p = buflen >= 4 ? buffer[3] : 0;
723 n = buflen >= size ? buffer[size-1] : 0;
724
725 if (buflen < size + p*n) {
726 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
727 "interface %d HEADER descriptor is invalid.\n",
728 dev->udev->devnum, alts->desc.bInterfaceNumber);
729 goto error;
730 }
c0efd232 731
ff924203
LP		 732 streaming->header.bNumFormats = p;
733 streaming->header.bEndpointAddress = buffer[6];
b482d923 734 if (buffer[2] == UVC_VS_INPUT_HEADER) {
c0efd232
LP		 735 streaming->header.bmInfo = buffer[7];
736 streaming->header.bTerminalLink = buffer[8];
737 streaming->header.bStillCaptureMethod = buffer[9];
738 streaming->header.bTriggerSupport = buffer[10];
739 streaming->header.bTriggerUsage = buffer[11];
c0efd232 740 } else {
ff924203
LP		 741 streaming->header.bTerminalLink = buffer[7];
742 }
743 streaming->header.bControlSize = n;
744
0b21d55f
JL		 745 streaming->header.bmaControls = kmemdup(&buffer[size], p * n,
746 GFP_KERNEL);
ff924203
LP		 747 if (streaming->header.bmaControls == NULL) {
748 ret = -ENOMEM;
c0efd232
LP		 749 goto error;
750 }
751
752 buflen -= buffer[0];
753 buffer += buffer[0];
754
755 _buffer = buffer;
756 _buflen = buflen;
757
758 /* Count the format and frame descriptors. */
042e143e 759 while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) {
c0efd232 760 switch (_buffer[2]) {
b482d923
LP		 761 case UVC_VS_FORMAT_UNCOMPRESSED:
762 case UVC_VS_FORMAT_MJPEG:
763 case UVC_VS_FORMAT_FRAME_BASED:
c0efd232
LP		 764 nformats++;
765 break;
766
b482d923 767 case UVC_VS_FORMAT_DV:
c0efd232
LP		 768 /* DV format has no frame descriptor. We will create a
769 * dummy frame descriptor with a dummy frame interval.
770 */
771 nformats++;
772 nframes++;
773 nintervals++;
774 break;
775
b482d923
LP		 776 case UVC_VS_FORMAT_MPEG2TS:
777 case UVC_VS_FORMAT_STREAM_BASED:
c0efd232
LP		 778 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
779 "interface %d FORMAT %u is not supported.\n",
780 dev->udev->devnum,
781 alts->desc.bInterfaceNumber, _buffer[2]);
782 break;
783
b482d923
LP		 784 case UVC_VS_FRAME_UNCOMPRESSED:
785 case UVC_VS_FRAME_MJPEG:
c0efd232
LP		 786 nframes++;
787 if (_buflen > 25)
788 nintervals += _buffer[25] ? _buffer[25] : 3;
789 break;
790
b482d923 791 case UVC_VS_FRAME_FRAME_BASED:
c0efd232
LP		 792 nframes++;
793 if (_buflen > 21)
794 nintervals += _buffer[21] ? _buffer[21] : 3;
795 break;
796 }
797
798 _buflen -= _buffer[0];
799 _buffer += _buffer[0];
800 }
801
802 if (nformats == 0) {
803 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
804 "%d has no supported formats defined.\n",
805 dev->udev->devnum, alts->desc.bInterfaceNumber);
806 goto error;
807 }
808
809 size = nformats * sizeof *format + nframes * sizeof *frame
810 + nintervals * sizeof *interval;
811 format = kzalloc(size, GFP_KERNEL);
812 if (format == NULL) {
813 ret = -ENOMEM;
814 goto error;
815 }
816
817 frame = (struct uvc_frame *)&format[nformats];
818 interval = (__u32 *)&frame[nframes];
819
820 streaming->format = format;
821 streaming->nformats = nformats;
822
823 /* Parse the format descriptors. */
042e143e 824 while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) {
c0efd232 825 switch (buffer[2]) {
b482d923
LP		 826 case UVC_VS_FORMAT_UNCOMPRESSED:
827 case UVC_VS_FORMAT_MJPEG:
828 case UVC_VS_FORMAT_DV:
829 case UVC_VS_FORMAT_FRAME_BASED:
c0efd232
LP		 830 format->frame = frame;
831 ret = uvc_parse_format(dev, streaming, format,
832 &interval, buffer, buflen);
833 if (ret < 0)
834 goto error;
835
836 frame += format->nframes;
837 format++;
838
839 buflen -= ret;
840 buffer += ret;
841 continue;
842
843 default:
844 break;
845 }
846
847 buflen -= buffer[0];
848 buffer += buffer[0];
849 }
850
c4ed8c66
LP		 851 if (buflen)
852 uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
853 "%d has %u bytes of trailing descriptor garbage.\n",
854 dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
855
c0efd232
LP		 856 /* Parse the alternate settings to find the maximum bandwidth. */
857 for (i = 0; i < intf->num_altsetting; ++i) {
858 struct usb_host_endpoint *ep;
859 alts = &intf->altsetting[i];
860 ep = uvc_find_endpoint(alts,
861 streaming->header.bEndpointAddress);
862 if (ep == NULL)
863 continue;
864
865 psize = le16_to_cpu(ep->desc.wMaxPacketSize);
866 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
867 if (psize > streaming->maxpsize)
868 streaming->maxpsize = psize;
869 }
870
35f02a68 871 list_add_tail(&streaming->list, &dev->streams);
c0efd232
LP		 872 return 0;
873
874error:
875 usb_driver_release_interface(&uvc_driver.driver, intf);
876 usb_put_intf(intf);
877 kfree(streaming->format);
878 kfree(streaming->header.bmaControls);
879 kfree(streaming);
880 return ret;
881}
882
8ca5a639
LP		 883static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
884 unsigned int num_pads, unsigned int extra_size)
885{
886 struct uvc_entity *entity;
887 unsigned int num_inputs;
888 unsigned int size;
4ffc2d89 889 unsigned int i;
8ca5a639 890
4ffc2d89 891 extra_size = ALIGN(extra_size, sizeof(*entity->pads));
8ca5a639 892 num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1;
4ffc2d89
LP		 893 size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads
894 + num_inputs;
8ca5a639
LP		 895 entity = kzalloc(size, GFP_KERNEL);
896 if (entity == NULL)
897 return NULL;
898
899 entity->id = id;
900 entity->type = type;
901
4ffc2d89
LP		 902 entity->num_links = 0;
903 entity->num_pads = num_pads;
904 entity->pads = ((void *)(entity + 1)) + extra_size;
905
906 for (i = 0; i < num_inputs; ++i)
907 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
908 if (!UVC_ENTITY_IS_OTERM(entity))
909 entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE;
910
8ca5a639 911 entity->bNrInPins = num_inputs;
4ffc2d89 912 entity->baSourceID = (__u8 *)(&entity->pads[num_pads]);
8ca5a639
LP		 913
914 return entity;
915}
916
c0efd232
LP		 917/* Parse vendor-specific extensions. */
918static int uvc_parse_vendor_control(struct uvc_device *dev,
919 const unsigned char *buffer, int buflen)
920{
921 struct usb_device *udev = dev->udev;
922 struct usb_host_interface *alts = dev->intf->cur_altsetting;
923 struct uvc_entity *unit;
924 unsigned int n, p;
925 int handled = 0;
926
927 switch (le16_to_cpu(dev->udev->descriptor.idVendor)) {
928 case 0x046d: /* Logitech */
929 if (buffer[1] != 0x41 || buffer[2] != 0x01)
930 break;
931
932 /* Logitech implements several vendor specific functions
933 * through vendor specific extension units (LXU).
934 *
935 * The LXU descriptors are similar to XU descriptors
936 * (see "USB Device Video Class for Video Devices", section
937 * 3.7.2.6 "Extension Unit Descriptor") with the following
938 * differences:
939 *
940 * ----------------------------------------------------------
941 * 0 bLength 1 Number
942 * Size of this descriptor, in bytes: 24+p+n*2
943 * ----------------------------------------------------------
944 * 23+p+n bmControlsType N Bitmap
945 * Individual bits in the set are defined:
946 * 0: Absolute
947 * 1: Relative
948 *
949 * This bitset is mapped exactly the same as bmControls.
950 * ----------------------------------------------------------
951 * 23+p+n*2 bReserved 1 Boolean
952 * ----------------------------------------------------------
953 * 24+p+n*2 iExtension 1 Index
954 * Index of a string descriptor that describes this
955 * extension unit.
956 * ----------------------------------------------------------
957 */
958 p = buflen >= 22 ? buffer[21] : 0;
959 n = buflen >= 25 + p ? buffer[22+p] : 0;
960
961 if (buflen < 25 + p + 2*n) {
962 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
963 "interface %d EXTENSION_UNIT error\n",
964 udev->devnum, alts->desc.bInterfaceNumber);
965 break;
966 }
967
8ca5a639
LP		 968 unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
969 p + 1, 2*n);
c0efd232
LP		 970 if (unit == NULL)
971 return -ENOMEM;
972
c0efd232
LP		 973 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
974 unit->extension.bNumControls = buffer[20];
8ca5a639 975 memcpy(unit->baSourceID, &buffer[22], p);
c0efd232 976 unit->extension.bControlSize = buffer[22+p];
8ca5a639
LP		 977 unit->extension.bmControls = (__u8 *)unit + sizeof(*unit);
978 unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit)
979 + n;
c0efd232
LP		 980 memcpy(unit->extension.bmControls, &buffer[23+p], 2*n);
981
982 if (buffer[24+p+2*n] != 0)
983 usb_string(udev, buffer[24+p+2*n], unit->name,
984 sizeof unit->name);
985 else
986 sprintf(unit->name, "Extension %u", buffer[3]);
987
988 list_add_tail(&unit->list, &dev->entities);
989 handled = 1;
990 break;
991 }
992
993 return handled;
994}
995
996static int uvc_parse_standard_control(struct uvc_device *dev,
997 const unsigned char *buffer, int buflen)
998{
999 struct usb_device *udev = dev->udev;
1000 struct uvc_entity *unit, *term;
1001 struct usb_interface *intf;
1002 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1003 unsigned int i, n, p, len;
1004 __u16 type;
1005
1006 switch (buffer[2]) {
b482d923 1007 case UVC_VC_HEADER:
c0efd232
LP		 1008 n = buflen >= 12 ? buffer[11] : 0;
1009
daf41ac2 1010 if (buflen < 12 + n) {
c0efd232
LP		 1011 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1012 "interface %d HEADER error\n", udev->devnum,
1013 alts->desc.bInterfaceNumber);
1014 return -EINVAL;
1015 }
1016
9bc6218d
MH		 1017 dev->uvc_version = get_unaligned_le16(&buffer[3]);
1018 dev->clock_frequency = get_unaligned_le32(&buffer[7]);
c0efd232
LP		 1019
1020 /* Parse all USB Video Streaming interfaces. */
1021 for (i = 0; i < n; ++i) {
1022 intf = usb_ifnum_to_if(udev, buffer[12+i]);
1023 if (intf == NULL) {
1024 uvc_trace(UVC_TRACE_DESCR, "device %d "
1025 "interface %d doesn't exists\n",
1026 udev->devnum, i);
1027 continue;
1028 }
1029
1030 uvc_parse_streaming(dev, intf);
1031 }
1032 break;
1033
b482d923 1034 case UVC_VC_INPUT_TERMINAL:
c0efd232
LP		 1035 if (buflen < 8) {
1036 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1037 "interface %d INPUT_TERMINAL error\n",
1038 udev->devnum, alts->desc.bInterfaceNumber);
1039 return -EINVAL;
1040 }
1041
1042 /* Make sure the terminal type MSB is not null, otherwise it
1043 * could be confused with a unit.
1044 */
9bc6218d 1045 type = get_unaligned_le16(&buffer[4]);
c0efd232
LP		 1046 if ((type & 0xff00) == 0) {
1047 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1048 "interface %d INPUT_TERMINAL %d has invalid "
1049 "type 0x%04x, skipping\n", udev->devnum,
1050 alts->desc.bInterfaceNumber,
1051 buffer[3], type);
1052 return 0;
1053 }
1054
1055 n = 0;
1056 p = 0;
1057 len = 8;
1058
b482d923 1059 if (type == UVC_ITT_CAMERA) {
c0efd232
LP		 1060 n = buflen >= 15 ? buffer[14] : 0;
1061 len = 15;
1062
b482d923 1063 } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) {
c0efd232
LP		 1064 n = buflen >= 9 ? buffer[8] : 0;
1065 p = buflen >= 10 + n ? buffer[9+n] : 0;
1066 len = 10;
1067 }
1068
1069 if (buflen < len + n + p) {
1070 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1071 "interface %d INPUT_TERMINAL error\n",
1072 udev->devnum, alts->desc.bInterfaceNumber);
1073 return -EINVAL;
1074 }
1075
8ca5a639
LP		 1076 term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
1077 1, n + p);
c0efd232
LP		 1078 if (term == NULL)
1079 return -ENOMEM;
1080
b482d923 1081 if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
c0efd232
LP		 1082 term->camera.bControlSize = n;
1083 term->camera.bmControls = (__u8 *)term + sizeof *term;
1084 term->camera.wObjectiveFocalLengthMin =
9bc6218d 1085 get_unaligned_le16(&buffer[8]);
c0efd232 1086 term->camera.wObjectiveFocalLengthMax =
9bc6218d 1087 get_unaligned_le16(&buffer[10]);
c0efd232 1088 term->camera.wOcularFocalLength =
9bc6218d 1089 get_unaligned_le16(&buffer[12]);
c0efd232 1090 memcpy(term->camera.bmControls, &buffer[15], n);
b482d923
LP		 1091 } else if (UVC_ENTITY_TYPE(term) ==
1092 UVC_ITT_MEDIA_TRANSPORT_INPUT) {
c0efd232
LP		 1093 term->media.bControlSize = n;
1094 term->media.bmControls = (__u8 *)term + sizeof *term;
1095 term->media.bTransportModeSize = p;
1096 term->media.bmTransportModes = (__u8 *)term
1097 + sizeof *term + n;
1098 memcpy(term->media.bmControls, &buffer[9], n);
1099 memcpy(term->media.bmTransportModes, &buffer[10+n], p);
1100 }
1101
1102 if (buffer[7] != 0)
1103 usb_string(udev, buffer[7], term->name,
1104 sizeof term->name);
b482d923 1105 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA)
c0efd232 1106 sprintf(term->name, "Camera %u", buffer[3]);
b482d923 1107 else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT)
c0efd232
LP		 1108 sprintf(term->name, "Media %u", buffer[3]);
1109 else
1110 sprintf(term->name, "Input %u", buffer[3]);
1111
1112 list_add_tail(&term->list, &dev->entities);
1113 break;
1114
b482d923 1115 case UVC_VC_OUTPUT_TERMINAL:
c0efd232
LP		 1116 if (buflen < 9) {
1117 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1118 "interface %d OUTPUT_TERMINAL error\n",
1119 udev->devnum, alts->desc.bInterfaceNumber);
1120 return -EINVAL;
1121 }
1122
1123 /* Make sure the terminal type MSB is not null, otherwise it
1124 * could be confused with a unit.
1125 */
9bc6218d 1126 type = get_unaligned_le16(&buffer[4]);
c0efd232
LP		 1127 if ((type & 0xff00) == 0) {
1128 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1129 "interface %d OUTPUT_TERMINAL %d has invalid "
1130 "type 0x%04x, skipping\n", udev->devnum,
1131 alts->desc.bInterfaceNumber, buffer[3], type);
1132 return 0;
1133 }
1134
8ca5a639
LP		 1135 term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
1136 1, 0);
c0efd232
LP		 1137 if (term == NULL)
1138 return -ENOMEM;
1139
8ca5a639 1140 memcpy(term->baSourceID, &buffer[7], 1);
c0efd232
LP		 1141
1142 if (buffer[8] != 0)
1143 usb_string(udev, buffer[8], term->name,
1144 sizeof term->name);
1145 else
1146 sprintf(term->name, "Output %u", buffer[3]);
1147
1148 list_add_tail(&term->list, &dev->entities);
1149 break;
1150
b482d923 1151 case UVC_VC_SELECTOR_UNIT:
c0efd232
LP		 1152 p = buflen >= 5 ? buffer[4] : 0;
1153
1154 if (buflen < 5 || buflen < 6 + p) {
1155 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1156 "interface %d SELECTOR_UNIT error\n",
1157 udev->devnum, alts->desc.bInterfaceNumber);
1158 return -EINVAL;
1159 }
1160
8ca5a639 1161 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
c0efd232
LP		 1162 if (unit == NULL)
1163 return -ENOMEM;
1164
8ca5a639 1165 memcpy(unit->baSourceID, &buffer[5], p);
c0efd232
LP		 1166
1167 if (buffer[5+p] != 0)
1168 usb_string(udev, buffer[5+p], unit->name,
1169 sizeof unit->name);
1170 else
1171 sprintf(unit->name, "Selector %u", buffer[3]);
1172
1173 list_add_tail(&unit->list, &dev->entities);
1174 break;
1175
b482d923 1176 case UVC_VC_PROCESSING_UNIT:
c0efd232
LP		 1177 n = buflen >= 8 ? buffer[7] : 0;
1178 p = dev->uvc_version >= 0x0110 ? 10 : 9;
1179
1180 if (buflen < p + n) {
1181 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1182 "interface %d PROCESSING_UNIT error\n",
1183 udev->devnum, alts->desc.bInterfaceNumber);
1184 return -EINVAL;
1185 }
1186
8ca5a639 1187 unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
c0efd232
LP		 1188 if (unit == NULL)
1189 return -ENOMEM;
1190
8ca5a639 1191 memcpy(unit->baSourceID, &buffer[4], 1);
c0efd232 1192 unit->processing.wMaxMultiplier =
9bc6218d 1193 get_unaligned_le16(&buffer[5]);
c0efd232
LP		 1194 unit->processing.bControlSize = buffer[7];
1195 unit->processing.bmControls = (__u8 *)unit + sizeof *unit;
1196 memcpy(unit->processing.bmControls, &buffer[8], n);
1197 if (dev->uvc_version >= 0x0110)
1198 unit->processing.bmVideoStandards = buffer[9+n];
1199
1200 if (buffer[8+n] != 0)
1201 usb_string(udev, buffer[8+n], unit->name,
1202 sizeof unit->name);
1203 else
1204 sprintf(unit->name, "Processing %u", buffer[3]);
1205
1206 list_add_tail(&unit->list, &dev->entities);
1207 break;
1208
b482d923 1209 case UVC_VC_EXTENSION_UNIT:
c0efd232
LP		 1210 p = buflen >= 22 ? buffer[21] : 0;
1211 n = buflen >= 24 + p ? buffer[22+p] : 0;
1212
1213 if (buflen < 24 + p + n) {
1214 uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
1215 "interface %d EXTENSION_UNIT error\n",
1216 udev->devnum, alts->desc.bInterfaceNumber);
1217 return -EINVAL;
1218 }
1219
8ca5a639 1220 unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n);
c0efd232
LP		 1221 if (unit == NULL)
1222 return -ENOMEM;
1223
c0efd232
LP		 1224 memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
1225 unit->extension.bNumControls = buffer[20];
8ca5a639 1226 memcpy(unit->baSourceID, &buffer[22], p);
c0efd232 1227 unit->extension.bControlSize = buffer[22+p];
8ca5a639 1228 unit->extension.bmControls = (__u8 *)unit + sizeof *unit;
c0efd232
LP		 1229 memcpy(unit->extension.bmControls, &buffer[23+p], n);
1230
1231 if (buffer[23+p+n] != 0)
1232 usb_string(udev, buffer[23+p+n], unit->name,
1233 sizeof unit->name);
1234 else
1235 sprintf(unit->name, "Extension %u", buffer[3]);
1236
1237 list_add_tail(&unit->list, &dev->entities);
1238 break;
1239
1240 default:
1241 uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
1242 "descriptor (%u)\n", buffer[2]);
1243 break;
1244 }
1245
1246 return 0;
1247}
1248
1249static int uvc_parse_control(struct uvc_device *dev)
1250{
1251 struct usb_host_interface *alts = dev->intf->cur_altsetting;
1252 unsigned char *buffer = alts->extra;
1253 int buflen = alts->extralen;
1254 int ret;
1255
1256 /* Parse the default alternate setting only, as the UVC specification
1257 * defines a single alternate setting, the default alternate setting
1258 * zero.
1259 */
1260
1261 while (buflen > 2) {
1262 if (uvc_parse_vendor_control(dev, buffer, buflen) ||
1263 buffer[1] != USB_DT_CS_INTERFACE)
1264 goto next_descriptor;
1265
1266 if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0)
1267 return ret;
1268
1269next_descriptor:
1270 buflen -= buffer[0];
1271 buffer += buffer[0];
1272 }
1273
538e7a00
LP		 1274 /* Check if the optional status endpoint is present. Built-in iSight
1275 * webcams have an interrupt endpoint but spit proprietary data that
1276 * don't conform to the UVC status endpoint messages. Don't try to
1277 * handle the interrupt endpoint for those cameras.
1278 */
1279 if (alts->desc.bNumEndpoints == 1 &&
1280 !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
c0efd232
LP		 1281 struct usb_host_endpoint *ep = &alts->endpoint[0];
1282 struct usb_endpoint_descriptor *desc = &ep->desc;
1283
1284 if (usb_endpoint_is_int_in(desc) &&
1285 le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
1286 desc->bInterval != 0) {
1287 uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
1288 "(addr %02x).\n", desc->bEndpointAddress);
1289 dev->int_ep = ep;
1290 }
1291 }
1292
1293 return 0;
1294}
1295
1296/* ------------------------------------------------------------------------
8e113595 1297 * UVC device scan
c0efd232
LP		 1298 */
1299
c0efd232
LP		 1300/*
1301 * Scan the UVC descriptors to locate a chain starting at an Output Terminal
1302 * and containing the following units:
1303 *
8e113595 1304 * - one or more Output Terminals (USB Streaming or Display)
c0efd232 1305 * - zero or one Processing Unit
8e113595 1306 * - zero, one or more single-input Selector Units
c0efd232
LP		 1307 * - zero or one multiple-input Selector Units, provided all inputs are
1308 * connected to input terminals
1309 * - zero, one or mode single-input Extension Units
2c2d264b 1310 * - one or more Input Terminals (Camera, External or USB Streaming)
c0efd232 1311 *
8e113595
LP		 1312 * The terminal and units must match on of the following structures:
1313 *
1314 * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0)
1315 * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ...
1316 * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n)
1317 *
1318 * +---------+ +---------+ -> OTT_*(0)
1319 * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ...
1320 * +---------+ +---------+ -> OTT_*(n)
1321 *
1322 * The Processing Unit and Extension Units can be in any order. Additional
1323 * Extension Units connected to the main chain as single-unit branches are
1324 * also supported. Single-input Selector Units are ignored.
c0efd232 1325 */
8e113595 1326static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
c0efd232
LP		 1327 struct uvc_entity *entity)
1328{
1329 switch (UVC_ENTITY_TYPE(entity)) {
b482d923 1330 case UVC_VC_EXTENSION_UNIT:
c0efd232 1331 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1332 printk(KERN_CONT " <- XU %d", entity->id);
c0efd232 1333
8ca5a639 1334 if (entity->bNrInPins != 1) {
c0efd232
LP		 1335 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
1336 "than 1 input pin.\n", entity->id);
1337 return -1;
1338 }
1339
c0efd232
LP		 1340 break;
1341
b482d923 1342 case UVC_VC_PROCESSING_UNIT:
c0efd232 1343 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1344 printk(KERN_CONT " <- PU %d", entity->id);
c0efd232 1345
8e113595 1346 if (chain->processing != NULL) {
c0efd232
LP		 1347 uvc_trace(UVC_TRACE_DESCR, "Found multiple "
1348 "Processing Units in chain.\n");
1349 return -1;
1350 }
1351
8e113595 1352 chain->processing = entity;
c0efd232
LP		 1353 break;
1354
b482d923 1355 case UVC_VC_SELECTOR_UNIT:
c0efd232 1356 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1357 printk(KERN_CONT " <- SU %d", entity->id);
c0efd232
LP		 1358
1359 /* Single-input selector units are ignored. */
8ca5a639 1360 if (entity->bNrInPins == 1)
c0efd232
LP		 1361 break;
1362
8e113595 1363 if (chain->selector != NULL) {
c0efd232
LP		 1364 uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
1365 "Units in chain.\n");
1366 return -1;
1367 }
1368
8e113595 1369 chain->selector = entity;
c0efd232
LP		 1370 break;
1371
b482d923
LP		 1372 case UVC_ITT_VENDOR_SPECIFIC:
1373 case UVC_ITT_CAMERA:
1374 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
c0efd232 1375 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1376 printk(KERN_CONT " <- IT %d\n", entity->id);
c0efd232 1377
c0efd232
LP		 1378 break;
1379
4093a5c4
LP		 1380 case UVC_OTT_VENDOR_SPECIFIC:
1381 case UVC_OTT_DISPLAY:
1382 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1383 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1384 printk(KERN_CONT " OT %d", entity->id);
4093a5c4
LP		 1385
1386 break;
1387
b482d923 1388 case UVC_TT_STREAMING:
4057ac6c
LP		 1389 if (UVC_ENTITY_IS_ITERM(entity)) {
1390 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1391 printk(KERN_CONT " <- IT %d\n", entity->id);
4057ac6c
LP		 1392 } else {
1393 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1394 printk(KERN_CONT " OT %d", entity->id);
ff924203
LP		 1395 }
1396
ff924203
LP		 1397 break;
1398
c0efd232
LP		 1399 default:
1400 uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
1401 "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
1402 return -1;
1403 }
1404
6241d8ca 1405 list_add_tail(&entity->chain, &chain->entities);
c0efd232
LP		 1406 return 0;
1407}
1408
8e113595 1409static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
c0efd232
LP		 1410 struct uvc_entity *entity, struct uvc_entity *prev)
1411{
1412 struct uvc_entity *forward;
1413 int found;
1414
1415 /* Forward scan */
1416 forward = NULL;
1417 found = 0;
1418
1419 while (1) {
8e113595 1420 forward = uvc_entity_by_reference(chain->dev, entity->id,
c0efd232
LP		 1421 forward);
1422 if (forward == NULL)
1423 break;
8e113595 1424 if (forward == prev)
c0efd232
LP		 1425 continue;
1426
8e113595
LP		 1427 switch (UVC_ENTITY_TYPE(forward)) {
1428 case UVC_VC_EXTENSION_UNIT:
8ca5a639 1429 if (forward->bNrInPins != 1) {
8e113595
LP		 1430 uvc_trace(UVC_TRACE_DESCR, "Extension unit %d "
1431 "has more than 1 input pin.\n",
1432 entity->id);
1433 return -EINVAL;
1434 }
c0efd232 1435
6241d8ca 1436 list_add_tail(&forward->chain, &chain->entities);
8e113595
LP		 1437 if (uvc_trace_param & UVC_TRACE_PROBE) {
1438 if (!found)
69396c4e 1439 printk(KERN_CONT " (->");
8e113595 1440
69396c4e 1441 printk(KERN_CONT " XU %d", forward->id);
8e113595
LP		 1442 found = 1;
1443 }
1444 break;
1445
1446 case UVC_OTT_VENDOR_SPECIFIC:
1447 case UVC_OTT_DISPLAY:
1448 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1449 case UVC_TT_STREAMING:
1450 if (UVC_ENTITY_IS_ITERM(forward)) {
1451 uvc_trace(UVC_TRACE_DESCR, "Unsupported input "
1452 "terminal %u.\n", forward->id);
1453 return -EINVAL;
1454 }
c0efd232 1455
6241d8ca 1456 list_add_tail(&forward->chain, &chain->entities);
8e113595
LP		 1457 if (uvc_trace_param & UVC_TRACE_PROBE) {
1458 if (!found)
69396c4e 1459 printk(KERN_CONT " (->");
8e113595 1460
69396c4e 1461 printk(KERN_CONT " OT %d", forward->id);
8e113595
LP		 1462 found = 1;
1463 }
1464 break;
c0efd232
LP		 1465 }
1466 }
1467 if (found)
69396c4e 1468 printk(KERN_CONT ")");
c0efd232
LP		 1469
1470 return 0;
1471}
1472
8e113595 1473static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
4057ac6c 1474 struct uvc_entity **_entity)
c0efd232 1475{
4057ac6c 1476 struct uvc_entity *entity = *_entity;
c0efd232 1477 struct uvc_entity *term;
4057ac6c 1478 int id = -EINVAL, i;
c0efd232
LP		 1479
1480 switch (UVC_ENTITY_TYPE(entity)) {
b482d923 1481 case UVC_VC_EXTENSION_UNIT:
b482d923 1482 case UVC_VC_PROCESSING_UNIT:
8ca5a639 1483 id = entity->baSourceID[0];
c0efd232
LP		 1484 break;
1485
b482d923 1486 case UVC_VC_SELECTOR_UNIT:
c0efd232 1487 /* Single-input selector units are ignored. */
8ca5a639
LP		 1488 if (entity->bNrInPins == 1) {
1489 id = entity->baSourceID[0];
c0efd232
LP		 1490 break;
1491 }
1492
1493 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1494 printk(KERN_CONT " <- IT");
c0efd232 1495
8e113595 1496 chain->selector = entity;
8ca5a639
LP		 1497 for (i = 0; i < entity->bNrInPins; ++i) {
1498 id = entity->baSourceID[i];
8e113595 1499 term = uvc_entity_by_id(chain->dev, id);
c0efd232
LP		 1500 if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
1501 uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
1502 "input %d isn't connected to an "
1503 "input terminal\n", entity->id, i);
1504 return -1;
1505 }
1506
1507 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1508 printk(KERN_CONT " %d", term->id);
c0efd232 1509
6241d8ca 1510 list_add_tail(&term->chain, &chain->entities);
8e113595 1511 uvc_scan_chain_forward(chain, term, entity);
c0efd232
LP		 1512 }
1513
1514 if (uvc_trace_param & UVC_TRACE_PROBE)
69396c4e 1515 printk(KERN_CONT "\n");
c0efd232
LP		 1516
1517 id = 0;
1518 break;
4057ac6c
LP		 1519
1520 case UVC_ITT_VENDOR_SPECIFIC:
1521 case UVC_ITT_CAMERA:
1522 case UVC_ITT_MEDIA_TRANSPORT_INPUT:
1523 case UVC_OTT_VENDOR_SPECIFIC:
1524 case UVC_OTT_DISPLAY:
1525 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
1526 case UVC_TT_STREAMING:
8ca5a639 1527 id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0;
4057ac6c 1528 break;
c0efd232
LP		 1529 }
1530
4057ac6c
LP		 1531 if (id <= 0) {
1532 *_entity = NULL;
1533 return id;
1534 }
1535
1536 entity = uvc_entity_by_id(chain->dev, id);
1537 if (entity == NULL) {
1538 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
1539 "unknown entity %d.\n", id);
1540 return -EINVAL;
1541 }
1542
1543 *_entity = entity;
1544 return 0;
c0efd232
LP		 1545}
1546
8e113595 1547static int uvc_scan_chain(struct uvc_video_chain *chain,
4057ac6c 1548 struct uvc_entity *term)
c0efd232
LP		 1549{
1550 struct uvc_entity *entity, *prev;
c0efd232 1551
4057ac6c 1552 uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:");
ff924203 1553
4057ac6c
LP		 1554 entity = term;
1555 prev = NULL;
8e113595 1556
4057ac6c
LP		 1557 while (entity != NULL) {
1558 /* Entity must not be part of an existing chain */
8e113595
LP		 1559 if (entity->chain.next || entity->chain.prev) {
1560 uvc_trace(UVC_TRACE_DESCR, "Found reference to "
4057ac6c 1561 "entity %d already in chain.\n", entity->id);
8e113595 1562 return -EINVAL;
c0efd232
LP		 1563 }
1564
1565 /* Process entity */
8e113595
LP		 1566 if (uvc_scan_chain_entity(chain, entity) < 0)
1567 return -EINVAL;
c0efd232
LP		 1568
1569 /* Forward scan */
8e113595
LP		 1570 if (uvc_scan_chain_forward(chain, entity, prev) < 0)
1571 return -EINVAL;
c0efd232 1572
c0efd232 1573 /* Backward scan */
4057ac6c
LP		 1574 prev = entity;
1575 if (uvc_scan_chain_backward(chain, &entity) < 0)
1576 return -EINVAL;
c0efd232
LP		 1577 }
1578
8e113595
LP		 1579 return 0;
1580}
1581
6241d8ca
LP		 1582static unsigned int uvc_print_terms(struct list_head *terms, u16 dir,
1583 char *buffer)
8e113595
LP		 1584{
1585 struct uvc_entity *term;
1586 unsigned int nterms = 0;
1587 char *p = buffer;
1588
1589 list_for_each_entry(term, terms, chain) {
6241d8ca
LP		 1590 if (!UVC_ENTITY_IS_TERM(term) ||
1591 UVC_TERM_DIRECTION(term) != dir)
1592 continue;
1593
1594 if (nterms)
8e113595 1595 p += sprintf(p, ",");
6241d8ca
LP		 1596 if (++nterms >= 4) {
1597 p += sprintf(p, "...");
1598 break;
8e113595 1599 }
6241d8ca 1600 p += sprintf(p, "%u", term->id);
ff924203 1601 }
c0efd232 1602
8e113595
LP		 1603 return p - buffer;
1604}
1605
1606static const char *uvc_print_chain(struct uvc_video_chain *chain)
1607{
1608 static char buffer[43];
1609 char *p = buffer;
1610
6241d8ca 1611 p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p);
8e113595 1612 p += sprintf(p, " -> ");
6241d8ca 1613 uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p);
8e113595
LP		 1614
1615 return buffer;
c0efd232
LP		 1616}
1617
e950267a
HI		 1618static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev)
1619{
1620 struct uvc_video_chain *chain;
1621
1622 chain = kzalloc(sizeof(*chain), GFP_KERNEL);
1623 if (chain == NULL)
1624 return NULL;
1625
1626 INIT_LIST_HEAD(&chain->entities);
1627 mutex_init(&chain->ctrl_mutex);
1628 chain->dev = dev;
1629 v4l2_prio_init(&chain->prio);
1630
1631 return chain;
1632}
1633
1634/*
1635 * Fallback heuristic for devices that don't connect units and terminals in a
1636 * valid chain.
1637 *
1638 * Some devices have invalid baSourceID references, causing uvc_scan_chain()
1639 * to fail, but if we just take the entities we can find and put them together
1640 * in the most sensible chain we can think of, turns out they do work anyway.
1641 * Note: This heuristic assumes there is a single chain.
1642 *
1643 * At the time of writing, devices known to have such a broken chain are
1644 * - Acer Integrated Camera (5986:055a)
1645 * - Realtek rtl157a7 (0bda:57a7)
1646 */
1647static int uvc_scan_fallback(struct uvc_device *dev)
1648{
1649 struct uvc_video_chain *chain;
1650 struct uvc_entity *iterm = NULL;
1651 struct uvc_entity *oterm = NULL;
1652 struct uvc_entity *entity;
1653 struct uvc_entity *prev;
1654
1655 /*
1656 * Start by locating the input and output terminals. We only support
1657 * devices with exactly one of each for now.
1658 */
1659 list_for_each_entry(entity, &dev->entities, list) {
1660 if (UVC_ENTITY_IS_ITERM(entity)) {
1661 if (iterm)
1662 return -EINVAL;
1663 iterm = entity;
1664 }
1665
1666 if (UVC_ENTITY_IS_OTERM(entity)) {
1667 if (oterm)
1668 return -EINVAL;
1669 oterm = entity;
1670 }
1671 }
1672
1673 if (iterm == NULL || oterm == NULL)
1674 return -EINVAL;
1675
1676 /* Allocate the chain and fill it. */
1677 chain = uvc_alloc_chain(dev);
1678 if (chain == NULL)
1679 return -ENOMEM;
1680
1681 if (uvc_scan_chain_entity(chain, oterm) < 0)
1682 goto error;
1683
1684 prev = oterm;
1685
1686 /*
1687 * Add all Processing and Extension Units with two pads. The order
1688 * doesn't matter much, use reverse list traversal to connect units in
1689 * UVC descriptor order as we build the chain from output to input. This
1690 * leads to units appearing in the order meant by the manufacturer for
1691 * the cameras known to require this heuristic.
1692 */
1693 list_for_each_entry_reverse(entity, &dev->entities, list) {
1694 if (entity->type != UVC_VC_PROCESSING_UNIT &&
1695 entity->type != UVC_VC_EXTENSION_UNIT)
1696 continue;
1697
1698 if (entity->num_pads != 2)
1699 continue;
1700
1701 if (uvc_scan_chain_entity(chain, entity) < 0)
1702 goto error;
1703
1704 prev->baSourceID[0] = entity->id;
1705 prev = entity;
1706 }
1707
1708 if (uvc_scan_chain_entity(chain, iterm) < 0)
1709 goto error;
1710
1711 prev->baSourceID[0] = iterm->id;
1712
1713 list_add_tail(&chain->list, &dev->chains);
1714
1715 uvc_trace(UVC_TRACE_PROBE,
1716 "Found a video chain by fallback heuristic (%s).\n",
1717 uvc_print_chain(chain));
1718
1719 return 0;
1720
1721error:
1722 kfree(chain);
1723 return -EINVAL;
1724}
1725
c0efd232 1726/*
35f02a68 1727 * Scan the device for video chains and register video devices.
c0efd232 1728 *
8e113595 1729 * Chains are scanned starting at their output terminals and walked backwards.
c0efd232 1730 */
35f02a68 1731static int uvc_scan_device(struct uvc_device *dev)
c0efd232 1732{
8e113595 1733 struct uvc_video_chain *chain;
c0efd232 1734 struct uvc_entity *term;
c0efd232 1735
c0efd232 1736 list_for_each_entry(term, &dev->entities, list) {
8e113595 1737 if (!UVC_ENTITY_IS_OTERM(term))
c0efd232
LP		 1738 continue;
1739
8e113595
LP		 1740 /* If the terminal is already included in a chain, skip it.
1741 * This can happen for chains that have multiple output
1742 * terminals, where all output terminals beside the first one
1743 * will be inserted in the chain in forward scans.
1744 */
1745 if (term->chain.next || term->chain.prev)
c0efd232
LP		 1746 continue;
1747
e950267a 1748 chain = uvc_alloc_chain(dev);
8e113595
LP		 1749 if (chain == NULL)
1750 return -ENOMEM;
1751
8be8ec6e
LP		 1752 term->flags |= UVC_ENTITY_FLAG_DEFAULT;
1753
8e113595
LP		 1754 if (uvc_scan_chain(chain, term) < 0) {
1755 kfree(chain);
1756 continue;
c0efd232 1757 }
8e113595
LP		 1758
1759 uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n",
1760 uvc_print_chain(chain));
1761
1762 list_add_tail(&chain->list, &dev->chains);
c0efd232
LP		 1763 }
1764
e950267a
HI		 1765 if (list_empty(&dev->chains))
1766 uvc_scan_fallback(dev);
1767
8e113595 1768 if (list_empty(&dev->chains)) {
c0efd232
LP		 1769 uvc_printk(KERN_INFO, "No valid video chain found.\n");
1770 return -1;
1771 }
1772
c0efd232
LP		 1773 return 0;
1774}
1775
8e113595
LP		 1776/* ------------------------------------------------------------------------
1777 * Video device registration and unregistration
1778 */
1779
716fdee1
LP		 1780/*
1781 * Delete the UVC device.
1782 *
1783 * Called by the kernel when the last reference to the uvc_device structure
1784 * is released.
1785 *
1786 * As this function is called after or during disconnect(), all URBs have
1787 * already been canceled by the USB core. There is no need to kill the
1788 * interrupt URB manually.
1789 */
1790static void uvc_delete(struct uvc_device *dev)
1791{
1792 struct list_head *p, *n;
1793
716fdee1
LP		 1794 uvc_status_cleanup(dev);
1795 uvc_ctrl_cleanup_device(dev);
1796
2228d80d
TI		 1797 usb_put_intf(dev->intf);
1798 usb_put_dev(dev->udev);
1799
5a254d75
LP		 1800 if (dev->vdev.dev)
1801 v4l2_device_unregister(&dev->vdev);
1802#ifdef CONFIG_MEDIA_CONTROLLER
a087ce70 1803 if (media_devnode_is_registered(dev->mdev.devnode))
5a254d75 1804 media_device_unregister(&dev->mdev);
9832e155 1805 media_device_cleanup(&dev->mdev);
5a254d75
LP		 1806#endif
1807
716fdee1
LP		 1808 list_for_each_safe(p, n, &dev->chains) {
1809 struct uvc_video_chain *chain;
1810 chain = list_entry(p, struct uvc_video_chain, list);
1811 kfree(chain);
1812 }
1813
1814 list_for_each_safe(p, n, &dev->entities) {
1815 struct uvc_entity *entity;
1816 entity = list_entry(p, struct uvc_entity, list);
4ffc2d89
LP		 1817#ifdef CONFIG_MEDIA_CONTROLLER
1818 uvc_mc_cleanup_entity(entity);
1819#endif
716fdee1
LP		 1820 kfree(entity);
1821 }
1822
1823 list_for_each_safe(p, n, &dev->streams) {
1824 struct uvc_streaming *streaming;
1825 streaming = list_entry(p, struct uvc_streaming, list);
1826 usb_driver_release_interface(&uvc_driver.driver,
1827 streaming->intf);
1828 usb_put_intf(streaming->intf);
1829 kfree(streaming->format);
1830 kfree(streaming->header.bmaControls);
1831 kfree(streaming);
1832 }
1833
1834 kfree(dev);
1835}
1836
1837static void uvc_release(struct video_device *vdev)
1838{
1839 struct uvc_streaming *stream = video_get_drvdata(vdev);
1840 struct uvc_device *dev = stream->dev;
1841
716fdee1
LP		 1842 /* Decrement the registered streams count and delete the device when it
1843 * reaches zero.
1844 */
1845 if (atomic_dec_and_test(&dev->nstreams))
1846 uvc_delete(dev);
1847}
1848
8e113595
LP		 1849/*
1850 * Unregister the video devices.
1851 */
1852static void uvc_unregister_video(struct uvc_device *dev)
1853{
1854 struct uvc_streaming *stream;
1855
716fdee1
LP		 1856 /* Unregistering all video devices might result in uvc_delete() being
1857 * called from inside the loop if there's no open file handle. To avoid
1858 * that, increment the stream count before iterating over the streams
1859 * and decrement it when done.
1860 */
1861 atomic_inc(&dev->nstreams);
1862
8e113595 1863 list_for_each_entry(stream, &dev->streams, list) {
d8da7513 1864 if (!video_is_registered(&stream->vdev))
8e113595
LP		 1865 continue;
1866
d8da7513 1867 video_unregister_device(&stream->vdev);
edbaa398
OR		 1868
1869 uvc_debugfs_cleanup_stream(stream);
8e113595 1870 }
716fdee1
LP		 1871
1872 /* Decrement the stream count and call uvc_delete explicitly if there
1873 * are no stream left.
1874 */
1875 if (atomic_dec_and_test(&dev->nstreams))
1876 uvc_delete(dev);
8e113595
LP		 1877}
1878
1879static int uvc_register_video(struct uvc_device *dev,
1880 struct uvc_streaming *stream)
1881{
d8da7513 1882 struct video_device *vdev = &stream->vdev;
8e113595
LP		 1883 int ret;
1884
b83bba24
LP		 1885 /* Initialize the video buffers queue. */
1886 ret = uvc_queue_init(&stream->queue, stream->type, !uvc_no_drop_param);
1887 if (ret)
1888 return ret;
1889
8e113595
LP		 1890 /* Initialize the streaming interface with default streaming
1891 * parameters.
1892 */
1893 ret = uvc_video_init(stream);
1894 if (ret < 0) {
1895 uvc_printk(KERN_ERR, "Failed to initialize the device "
1896 "(%d).\n", ret);
1897 return ret;
1898 }
1899
edbaa398
OR		 1900 uvc_debugfs_init_stream(stream);
1901
8e113595 1902 /* Register the device with V4L. */
8e113595
LP		 1903
1904 /* We already hold a reference to dev->udev. The video device will be
1905 * unregistered before the reference is released, so we don't need to
1906 * get another one.
1907 */
5a254d75 1908 vdev->v4l2_dev = &dev->vdev;
8e113595 1909 vdev->fops = &uvc_fops;
d5e90b7a 1910 vdev->ioctl_ops = &uvc_ioctl_ops;
716fdee1 1911 vdev->release = uvc_release;
0550513c 1912 vdev->prio = &stream->chain->prio;
954f340f
HV		 1913 if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1914 vdev->vfl_dir = VFL_DIR_TX;
8e113595
LP		 1915 strlcpy(vdev->name, dev->name, sizeof vdev->name);
1916
1917 /* Set the driver data before calling video_register_device, otherwise
1918 * uvc_v4l2_open might race us.
1919 */
8e113595
LP		 1920 video_set_drvdata(vdev, stream);
1921
1922 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1923 if (ret < 0) {
1924 uvc_printk(KERN_ERR, "Failed to register video device (%d).\n",
1925 ret);
8e113595
LP		 1926 return ret;
1927 }
1928
f887e99a
LP		 1929 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1930 stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE;
1931 else
1932 stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
1933
716fdee1 1934 atomic_inc(&dev->nstreams);
8e113595
LP		 1935 return 0;
1936}
1937
1938/*
1939 * Register all video devices in all chains.
1940 */
1941static int uvc_register_terms(struct uvc_device *dev,
6241d8ca 1942 struct uvc_video_chain *chain)
8e113595
LP		 1943{
1944 struct uvc_streaming *stream;
1945 struct uvc_entity *term;
1946 int ret;
1947
6241d8ca 1948 list_for_each_entry(term, &chain->entities, chain) {
8e113595
LP		 1949 if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING)
1950 continue;
1951
1952 stream = uvc_stream_by_id(dev, term->id);
1953 if (stream == NULL) {
1954 uvc_printk(KERN_INFO, "No streaming interface found "
1955 "for terminal %u.", term->id);
1956 continue;
1957 }
1958
1959 stream->chain = chain;
1960 ret = uvc_register_video(dev, stream);
1961 if (ret < 0)
1962 return ret;
8a65a948 1963
d8da7513 1964 term->vdev = &stream->vdev;
8e113595
LP		 1965 }
1966
1967 return 0;
1968}
1969
1970static int uvc_register_chains(struct uvc_device *dev)
1971{
1972 struct uvc_video_chain *chain;
1973 int ret;
1974
1975 list_for_each_entry(chain, &dev->chains, list) {
6241d8ca 1976 ret = uvc_register_terms(dev, chain);
8e113595
LP		 1977 if (ret < 0)
1978 return ret;
4ffc2d89
LP		 1979
1980#ifdef CONFIG_MEDIA_CONTROLLER
1981 ret = uvc_mc_register_entities(chain);
1982 if (ret < 0) {
1983 uvc_printk(KERN_INFO, "Failed to register entites "
1984 "(%d).\n", ret);
1985 }
1986#endif
8e113595
LP		 1987 }
1988
1989 return 0;
1990}
1991
1992/* ------------------------------------------------------------------------
1993 * USB probe, disconnect, suspend and resume
1994 */
1995
c0efd232
LP		 1996static int uvc_probe(struct usb_interface *intf,
1997 const struct usb_device_id *id)
1998{
1999 struct usb_device *udev = interface_to_usbdev(intf);
2000 struct uvc_device *dev;
2001 int ret;
2002
2003 if (id->idVendor && id->idProduct)
2004 uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
2005 "(%04x:%04x)\n", udev->devpath, id->idVendor,
2006 id->idProduct);
2007 else
2008 uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
2009 udev->devpath);
2010
2c2d264b 2011 /* Allocate memory for the device and initialize it. */
c0efd232
LP		 2012 if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL)
2013 return -ENOMEM;
2014
2015 INIT_LIST_HEAD(&dev->entities);
8e113595 2016 INIT_LIST_HEAD(&dev->chains);
35f02a68 2017 INIT_LIST_HEAD(&dev->streams);
716fdee1 2018 atomic_set(&dev->nstreams, 0);
8fb91b33 2019 atomic_set(&dev->nmappings, 0);
17706f56 2020 mutex_init(&dev->lock);
c0efd232
LP		 2021
2022 dev->udev = usb_get_dev(udev);
2023 dev->intf = usb_get_intf(intf);
2024 dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
73de3592
LP		 2025 dev->quirks = (uvc_quirks_param == -1)
2026 ? id->driver_info : uvc_quirks_param;
c0efd232
LP		 2027
2028 if (udev->product != NULL)
d0ebf307 2029 strlcpy(dev->name, udev->product, sizeof dev->name);
c0efd232
LP		 2030 else
2031 snprintf(dev->name, sizeof dev->name,
2032 "UVC Camera (%04x:%04x)",
2033 le16_to_cpu(udev->descriptor.idVendor),
2034 le16_to_cpu(udev->descriptor.idProduct));
2035
2c2d264b 2036 /* Parse the Video Class control descriptor. */
c0efd232
LP		 2037 if (uvc_parse_control(dev) < 0) {
2038 uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
2039 "descriptors.\n");
2040 goto error;
2041 }
2042
fba4578e 2043 uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n",
c0efd232
LP		 2044 dev->uvc_version >> 8, dev->uvc_version & 0xff,
2045 udev->product ? udev->product : "<unnamed>",
2046 le16_to_cpu(udev->descriptor.idVendor),
2047 le16_to_cpu(udev->descriptor.idProduct));
2048
73de3592
LP		 2049 if (dev->quirks != id->driver_info) {
2050 uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module "
2051 "parameter for testing purpose.\n", dev->quirks);
c0efd232
LP		 2052 uvc_printk(KERN_INFO, "Please report required quirks to the "
2053 "linux-uvc-devel mailing list.\n");
2054 }
2055
9832e155 2056 /* Initialize the media device and register the V4L2 device. */
5a254d75
LP		 2057#ifdef CONFIG_MEDIA_CONTROLLER
2058 dev->mdev.dev = &intf->dev;
2059 strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
2060 if (udev->serial)
2061 strlcpy(dev->mdev.serial, udev->serial,
2062 sizeof(dev->mdev.serial));
2063 strcpy(dev->mdev.bus_info, udev->devpath);
2064 dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
fd3e5824 2065 dev->mdev.driver_version = LINUX_VERSION_CODE;
9832e155 2066 media_device_init(&dev->mdev);
5a254d75
LP		 2067
2068 dev->vdev.mdev = &dev->mdev;
2069#endif
2070 if (v4l2_device_register(&intf->dev, &dev->vdev) < 0)
2071 goto error;
2072
2c2d264b 2073 /* Initialize controls. */
c0efd232
LP		 2074 if (uvc_ctrl_init_device(dev) < 0)
2075 goto error;
2076
8e113595 2077 /* Scan the device for video chains. */
35f02a68 2078 if (uvc_scan_device(dev) < 0)
c0efd232
LP		 2079 goto error;
2080
5a254d75 2081 /* Register video device nodes. */
8e113595
LP		 2082 if (uvc_register_chains(dev) < 0)
2083 goto error;
2084
9832e155
JMC		 2085#ifdef CONFIG_MEDIA_CONTROLLER
2086 /* Register the media device node */
2087 if (media_device_register(&dev->mdev) < 0)
2088 goto error;
2089#endif
2c2d264b 2090 /* Save our data pointer in the interface data. */
c0efd232
LP		 2091 usb_set_intfdata(intf, dev);
2092
2c2d264b 2093 /* Initialize the interrupt URB. */
c0efd232
LP		 2094 if ((ret = uvc_status_init(dev)) < 0) {
2095 uvc_printk(KERN_INFO, "Unable to initialize the status "
2096 "endpoint (%d), status interrupt will not be "
2097 "supported.\n", ret);
2098 }
2099
2100 uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
3dae8b41 2101 usb_enable_autosuspend(udev);
c0efd232
LP		 2102 return 0;
2103
2104error:
716fdee1 2105 uvc_unregister_video(dev);
c0efd232
LP		 2106 return -ENODEV;
2107}
2108
2109static void uvc_disconnect(struct usb_interface *intf)
2110{
2111 struct uvc_device *dev = usb_get_intfdata(intf);
2112
2113 /* Set the USB interface data to NULL. This can be done outside the
2114 * lock, as there's no other reader.
2115 */
2116 usb_set_intfdata(intf, NULL);
2117
b482d923
LP		 2118 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2119 UVC_SC_VIDEOSTREAMING)
c0efd232
LP		 2120 return;
2121
716fdee1 2122 uvc_unregister_video(dev);
c0efd232
LP		 2123}
2124
2125static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
2126{
2127 struct uvc_device *dev = usb_get_intfdata(intf);
35f02a68 2128 struct uvc_streaming *stream;
c0efd232
LP		 2129
2130 uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
2131 intf->cur_altsetting->desc.bInterfaceNumber);
2132
2133 /* Controls are cached on the fly so they don't need to be saved. */
b482d923 2134 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
17706f56
LP		 2135 UVC_SC_VIDEOCONTROL) {
2136 mutex_lock(&dev->lock);
2137 if (dev->users)
2138 uvc_status_stop(dev);
2139 mutex_unlock(&dev->lock);
2140 return 0;
2141 }
c0efd232 2142
35f02a68
LP		 2143 list_for_each_entry(stream, &dev->streams, list) {
2144 if (stream->intf == intf)
2145 return uvc_video_suspend(stream);
c0efd232
LP		 2146 }
2147
35f02a68
LP		 2148 uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface "
2149 "mismatch.\n");
2150 return -EINVAL;
c0efd232
LP		 2151}
2152
9b0ae867 2153static int __uvc_resume(struct usb_interface *intf, int reset)
c0efd232
LP		 2154{
2155 struct uvc_device *dev = usb_get_intfdata(intf);
35f02a68 2156 struct uvc_streaming *stream;
b83bba24 2157 int ret = 0;
c0efd232
LP		 2158
2159 uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
2160 intf->cur_altsetting->desc.bInterfaceNumber);
2161
b482d923
LP		 2162 if (intf->cur_altsetting->desc.bInterfaceSubClass ==
2163 UVC_SC_VIDEOCONTROL) {
17706f56 2164 if (reset) {
17e1319f 2165 ret = uvc_ctrl_restore_values(dev);
7564f67d
HV		 2166 if (ret < 0)
2167 return ret;
2168 }
c0efd232 2169
17706f56
LP		 2170 mutex_lock(&dev->lock);
2171 if (dev->users)
2172 ret = uvc_status_start(dev, GFP_NOIO);
2173 mutex_unlock(&dev->lock);
2174
2175 return ret;
c0efd232
LP		 2176 }
2177
35f02a68 2178 list_for_each_entry(stream, &dev->streams, list) {
b83bba24
LP		 2179 if (stream->intf == intf) {
2180 ret = uvc_video_resume(stream, reset);
2181 if (ret < 0)
0da4ab98
LP		 2182 uvc_queue_streamoff(&stream->queue,
2183 stream->queue.queue.type);
b83bba24
LP		 2184 return ret;
2185 }
c0efd232
LP		 2186 }
2187
35f02a68
LP		 2188 uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface "
2189 "mismatch.\n");
2190 return -EINVAL;
c0efd232
LP		 2191}
2192
9b0ae867
LP		 2193static int uvc_resume(struct usb_interface *intf)
2194{
2195 return __uvc_resume(intf, 0);
2196}
2197
2198static int uvc_reset_resume(struct usb_interface *intf)
2199{
2200 return __uvc_resume(intf, 1);
2201}
2202
310fe524
LP		 2203/* ------------------------------------------------------------------------
2204 * Module parameters
2205 */
2206
2207static int uvc_clock_param_get(char *buffer, struct kernel_param *kp)
2208{
2209 if (uvc_clock_param == CLOCK_MONOTONIC)
2210 return sprintf(buffer, "CLOCK_MONOTONIC");
2211 else
2212 return sprintf(buffer, "CLOCK_REALTIME");
2213}
2214
2215static int uvc_clock_param_set(const char *val, struct kernel_param *kp)
2216{
2217 if (strncasecmp(val, "clock_", strlen("clock_")) == 0)
2218 val += strlen("clock_");
2219
2220 if (strcasecmp(val, "monotonic") == 0)
2221 uvc_clock_param = CLOCK_MONOTONIC;
2222 else if (strcasecmp(val, "realtime") == 0)
2223 uvc_clock_param = CLOCK_REALTIME;
2224 else
2225 return -EINVAL;
2226
2227 return 0;
2228}
2229
2230module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get,
2231 &uvc_clock_param, S_IRUGO|S_IWUSR);
2232MODULE_PARM_DESC(clock, "Video buffers timestamp clock");
5d0fd3c8
LP		 2233module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR);
2234MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps");
310fe524
LP		 2235module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR);
2236MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
2237module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
2238MODULE_PARM_DESC(quirks, "Forced device quirks");
2239module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
2240MODULE_PARM_DESC(trace, "Trace level bitmask");
2241module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);
2242MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
2243
c0efd232
LP		 2244/* ------------------------------------------------------------------------
2245 * Driver initialization and cleanup
2246 */
2247
2248/*
2249 * The Logitech cameras listed below have their interface class set to
2250 * VENDOR_SPEC because they don't announce themselves as UVC devices, even
2251 * though they are compliant.
2252 */
2253static struct usb_device_id uvc_ids[] = {
4eb2697e
LP		 2254 /* LogiLink Wireless Webcam */
2255 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2256 | USB_DEVICE_ID_MATCH_INT_INFO,
2257 .idVendor = 0x0416,
2258 .idProduct = 0xa91a,
2259 .bInterfaceClass = USB_CLASS_VIDEO,
2260 .bInterfaceSubClass = 1,
2261 .bInterfaceProtocol = 0,
2262 .driver_info = UVC_QUIRK_PROBE_MINMAX },
bce039c0
LP		 2263 /* Genius eFace 2025 */
2264 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2265 | USB_DEVICE_ID_MATCH_INT_INFO,
2266 .idVendor = 0x0458,
2267 .idProduct = 0x706e,
2268 .bInterfaceClass = USB_CLASS_VIDEO,
2269 .bInterfaceSubClass = 1,
2270 .bInterfaceProtocol = 0,
2271 .driver_info = UVC_QUIRK_PROBE_MINMAX },
c0efd232
LP		 2272 /* Microsoft Lifecam NX-6000 */
2273 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2274 | USB_DEVICE_ID_MATCH_INT_INFO,
2275 .idVendor = 0x045e,
2276 .idProduct = 0x00f8,
2277 .bInterfaceClass = USB_CLASS_VIDEO,
2278 .bInterfaceSubClass = 1,
2279 .bInterfaceProtocol = 0,
2280 .driver_info = UVC_QUIRK_PROBE_MINMAX },
1558ec83
LP		 2281 /* Microsoft Lifecam NX-3000 */
2282 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2283 | USB_DEVICE_ID_MATCH_INT_INFO,
2284 .idVendor = 0x045e,
2285 .idProduct = 0x0721,
2286 .bInterfaceClass = USB_CLASS_VIDEO,
2287 .bInterfaceSubClass = 1,
2288 .bInterfaceProtocol = 0,
2289 .driver_info = UVC_QUIRK_PROBE_DEF },
c0efd232
LP		 2290 /* Microsoft Lifecam VX-7000 */
2291 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2292 | USB_DEVICE_ID_MATCH_INT_INFO,
2293 .idVendor = 0x045e,
2294 .idProduct = 0x0723,
2295 .bInterfaceClass = USB_CLASS_VIDEO,
2296 .bInterfaceSubClass = 1,
2297 .bInterfaceProtocol = 0,
2298 .driver_info = UVC_QUIRK_PROBE_MINMAX },
2299 /* Logitech Quickcam Fusion */
2300 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2301 | USB_DEVICE_ID_MATCH_INT_INFO,
2302 .idVendor = 0x046d,
2303 .idProduct = 0x08c1,
2304 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2305 .bInterfaceSubClass = 1,
2306 .bInterfaceProtocol = 0 },
2307 /* Logitech Quickcam Orbit MP */
2308 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2309 | USB_DEVICE_ID_MATCH_INT_INFO,
2310 .idVendor = 0x046d,
2311 .idProduct = 0x08c2,
2312 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2313 .bInterfaceSubClass = 1,
2314 .bInterfaceProtocol = 0 },
2315 /* Logitech Quickcam Pro for Notebook */
2316 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2317 | USB_DEVICE_ID_MATCH_INT_INFO,
2318 .idVendor = 0x046d,
2319 .idProduct = 0x08c3,
2320 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2321 .bInterfaceSubClass = 1,
2322 .bInterfaceProtocol = 0 },
2323 /* Logitech Quickcam Pro 5000 */
2324 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2325 | USB_DEVICE_ID_MATCH_INT_INFO,
2326 .idVendor = 0x046d,
2327 .idProduct = 0x08c5,
2328 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2329 .bInterfaceSubClass = 1,
2330 .bInterfaceProtocol = 0 },
2331 /* Logitech Quickcam OEM Dell Notebook */
2332 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2333 | USB_DEVICE_ID_MATCH_INT_INFO,
2334 .idVendor = 0x046d,
2335 .idProduct = 0x08c6,
2336 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2337 .bInterfaceSubClass = 1,
2338 .bInterfaceProtocol = 0 },
2339 /* Logitech Quickcam OEM Cisco VT Camera II */
2340 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2341 | USB_DEVICE_ID_MATCH_INT_INFO,
2342 .idVendor = 0x046d,
2343 .idProduct = 0x08c7,
2344 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2345 .bInterfaceSubClass = 1,
2346 .bInterfaceProtocol = 0 },
17e1319f
WM		 2347 /* Logitech HD Pro Webcam C920 */
2348 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2349 | USB_DEVICE_ID_MATCH_INT_INFO,
2350 .idVendor = 0x046d,
2351 .idProduct = 0x082d,
2352 .bInterfaceClass = USB_CLASS_VIDEO,
2353 .bInterfaceSubClass = 1,
2354 .bInterfaceProtocol = 0,
2355 .driver_info = UVC_QUIRK_RESTORE_CTRLS_ON_INIT },
86d8b6ab
LP		 2356 /* Chicony CNF7129 (Asus EEE 100HE) */
2357 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2358 | USB_DEVICE_ID_MATCH_INT_INFO,
2359 .idVendor = 0x04f2,
2360 .idProduct = 0xb071,
2361 .bInterfaceClass = USB_CLASS_VIDEO,
2362 .bInterfaceSubClass = 1,
2363 .bInterfaceProtocol = 0,
2364 .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE },
f61d1d8a
LP		 2365 /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */
2366 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2367 | USB_DEVICE_ID_MATCH_INT_INFO,
2368 .idVendor = 0x058f,
2369 .idProduct = 0x3820,
2370 .bInterfaceClass = USB_CLASS_VIDEO,
2371 .bInterfaceSubClass = 1,
2372 .bInterfaceProtocol = 0,
2373 .driver_info = UVC_QUIRK_PROBE_MINMAX },
3efe2f1b
LP		 2374 /* Dell XPS m1530 */
2375 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2376 | USB_DEVICE_ID_MATCH_INT_INFO,
2377 .idVendor = 0x05a9,
2378 .idProduct = 0x2640,
2379 .bInterfaceClass = USB_CLASS_VIDEO,
89e0f248
JS		 2380 .bInterfaceSubClass = 1,
2381 .bInterfaceProtocol = 0,
2382 .driver_info = UVC_QUIRK_PROBE_DEF },
2383 /* Dell SP2008WFP Monitor */
2384 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2385 | USB_DEVICE_ID_MATCH_INT_INFO,
2386 .idVendor = 0x05a9,
2387 .idProduct = 0x2641,
2388 .bInterfaceClass = USB_CLASS_VIDEO,
3efe2f1b
LP		 2389 .bInterfaceSubClass = 1,
2390 .bInterfaceProtocol = 0,
2391 .driver_info = UVC_QUIRK_PROBE_DEF },
c2a273b2
JS		 2392 /* Dell Alienware X51 */
2393 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2394 | USB_DEVICE_ID_MATCH_INT_INFO,
2395 .idVendor = 0x05a9,
2396 .idProduct = 0x2643,
2397 .bInterfaceClass = USB_CLASS_VIDEO,
2398 .bInterfaceSubClass = 1,
2399 .bInterfaceProtocol = 0,
2400 .driver_info = UVC_QUIRK_PROBE_DEF },
afcf44c7
KM		 2401 /* Dell Studio Hybrid 140g (OmniVision webcam) */
2402 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2403 | USB_DEVICE_ID_MATCH_INT_INFO,
2404 .idVendor = 0x05a9,
2405 .idProduct = 0x264a,
2406 .bInterfaceClass = USB_CLASS_VIDEO,
2407 .bInterfaceSubClass = 1,
2408 .bInterfaceProtocol = 0,
2409 .driver_info = UVC_QUIRK_PROBE_DEF },
62ea864f
PF		 2410 /* Dell XPS M1330 (OmniVision OV7670 webcam) */
2411 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2412 | USB_DEVICE_ID_MATCH_INT_INFO,
2413 .idVendor = 0x05a9,
2414 .idProduct = 0x7670,
2415 .bInterfaceClass = USB_CLASS_VIDEO,
2416 .bInterfaceSubClass = 1,
2417 .bInterfaceProtocol = 0,
2418 .driver_info = UVC_QUIRK_PROBE_DEF },
c0efd232 2419 /* Apple Built-In iSight */
2c2d264b 2420 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
c0efd232
LP		 2421 | USB_DEVICE_ID_MATCH_INT_INFO,
2422 .idVendor = 0x05ac,
2423 .idProduct = 0x8501,
2c2d264b
LP		 2424 .bInterfaceClass = USB_CLASS_VIDEO,
2425 .bInterfaceSubClass = 1,
2426 .bInterfaceProtocol = 0,
c0efd232
LP		 2427 .driver_info = UVC_QUIRK_PROBE_MINMAX
2428 | UVC_QUIRK_BUILTIN_ISIGHT },
949d9264
KS		 2429 /* Foxlink ("HP Webcam" on HP Mini 5103) */
2430 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2431 | USB_DEVICE_ID_MATCH_INT_INFO,
2432 .idVendor = 0x05c8,
2433 .idProduct = 0x0403,
2434 .bInterfaceClass = USB_CLASS_VIDEO,
2435 .bInterfaceSubClass = 1,
2436 .bInterfaceProtocol = 0,
2437 .driver_info = UVC_QUIRK_FIX_BANDWIDTH },
c0efd232 2438 /* Genesys Logic USB 2.0 PC Camera */
2c2d264b 2439 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
c0efd232 2440 | USB_DEVICE_ID_MATCH_INT_INFO,
2c2d264b
LP		 2441 .idVendor = 0x05e3,
2442 .idProduct = 0x0505,
2443 .bInterfaceClass = USB_CLASS_VIDEO,
2444 .bInterfaceSubClass = 1,
2445 .bInterfaceProtocol = 0,
2446 .driver_info = UVC_QUIRK_STREAM_NO_FID },
e01a2344
LP		 2447 /* Hercules Classic Silver */
2448 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2449 | USB_DEVICE_ID_MATCH_INT_INFO,
2450 .idVendor = 0x06f8,
2451 .idProduct = 0x300c,
2452 .bInterfaceClass = USB_CLASS_VIDEO,
2453 .bInterfaceSubClass = 1,
2454 .bInterfaceProtocol = 0,
2455 .driver_info = UVC_QUIRK_FIX_BANDWIDTH },
d79cd839
LP		 2456 /* ViMicro Vega */
2457 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2458 | USB_DEVICE_ID_MATCH_INT_INFO,
2459 .idVendor = 0x0ac8,
2460 .idProduct = 0x332d,
2461 .bInterfaceClass = USB_CLASS_VIDEO,
2462 .bInterfaceSubClass = 1,
2463 .bInterfaceProtocol = 0,
2464 .driver_info = UVC_QUIRK_FIX_BANDWIDTH },
2465 /* ViMicro - Minoru3D */
2466 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2467 | USB_DEVICE_ID_MATCH_INT_INFO,
2468 .idVendor = 0x0ac8,
2469 .idProduct = 0x3410,
2470 .bInterfaceClass = USB_CLASS_VIDEO,
2471 .bInterfaceSubClass = 1,
2472 .bInterfaceProtocol = 0,
2473 .driver_info = UVC_QUIRK_FIX_BANDWIDTH },
2474 /* ViMicro Venus - Minoru3D */
2475 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
50144aee
LP		 2476 | USB_DEVICE_ID_MATCH_INT_INFO,
2477 .idVendor = 0x0ac8,
d79cd839 2478 .idProduct = 0x3420,
50144aee
LP		 2479 .bInterfaceClass = USB_CLASS_VIDEO,
2480 .bInterfaceSubClass = 1,
2481 .bInterfaceProtocol = 0,
2482 .driver_info = UVC_QUIRK_FIX_BANDWIDTH },
d584b838
LP		 2483 /* Ophir Optronics - SPCAM 620U */
2484 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2485 | USB_DEVICE_ID_MATCH_INT_INFO,
2486 .idVendor = 0x0bd3,
2487 .idProduct = 0x0555,
2488 .bInterfaceClass = USB_CLASS_VIDEO,
2489 .bInterfaceSubClass = 1,
2490 .bInterfaceProtocol = 0,
2491 .driver_info = UVC_QUIRK_PROBE_MINMAX },
c0efd232
LP		 2492 /* MT6227 */
2493 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2494 | USB_DEVICE_ID_MATCH_INT_INFO,
2495 .idVendor = 0x0e8d,
2496 .idProduct = 0x0004,
2497 .bInterfaceClass = USB_CLASS_VIDEO,
2498 .bInterfaceSubClass = 1,
2499 .bInterfaceProtocol = 0,
bab6f66c
LP		 2500 .driver_info = UVC_QUIRK_PROBE_MINMAX
2501 | UVC_QUIRK_PROBE_DEF },
9275b32b
LP		 2502 /* IMC Networks (Medion Akoya) */
2503 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2504 | USB_DEVICE_ID_MATCH_INT_INFO,
2505 .idVendor = 0x13d3,
2506 .idProduct = 0x5103,
2507 .bInterfaceClass = USB_CLASS_VIDEO,
2508 .bInterfaceSubClass = 1,
2509 .bInterfaceProtocol = 0,
2510 .driver_info = UVC_QUIRK_STREAM_NO_FID },
d1787b1f
LP		 2511 /* JMicron USB2.0 XGA WebCam */
2512 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2513 | USB_DEVICE_ID_MATCH_INT_INFO,
2514 .idVendor = 0x152d,
2515 .idProduct = 0x0310,
2516 .bInterfaceClass = USB_CLASS_VIDEO,
2517 .bInterfaceSubClass = 1,
2518 .bInterfaceProtocol = 0,
2519 .driver_info = UVC_QUIRK_PROBE_MINMAX },
c0efd232
LP		 2520 /* Syntek (HP Spartan) */
2521 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2522 | USB_DEVICE_ID_MATCH_INT_INFO,
2523 .idVendor = 0x174f,
2524 .idProduct = 0x5212,
2525 .bInterfaceClass = USB_CLASS_VIDEO,
2526 .bInterfaceSubClass = 1,
2527 .bInterfaceProtocol = 0,
25e69850 2528 .driver_info = UVC_QUIRK_STREAM_NO_FID },
562f0fed
LP		 2529 /* Syntek (Samsung Q310) */
2530 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2531 | USB_DEVICE_ID_MATCH_INT_INFO,
2532 .idVendor = 0x174f,
2533 .idProduct = 0x5931,
2534 .bInterfaceClass = USB_CLASS_VIDEO,
2535 .bInterfaceSubClass = 1,
2536 .bInterfaceProtocol = 0,
2537 .driver_info = UVC_QUIRK_STREAM_NO_FID },
f129b03b
LP		 2538 /* Syntek (Packard Bell EasyNote MX52 */
2539 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2540 | USB_DEVICE_ID_MATCH_INT_INFO,
2541 .idVendor = 0x174f,
2542 .idProduct = 0x8a12,
2543 .bInterfaceClass = USB_CLASS_VIDEO,
2544 .bInterfaceSubClass = 1,
2545 .bInterfaceProtocol = 0,
2546 .driver_info = UVC_QUIRK_STREAM_NO_FID },
f61d1d8a 2547 /* Syntek (Asus F9SG) */
25e69850
LP		 2548 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2549 | USB_DEVICE_ID_MATCH_INT_INFO,
2550 .idVendor = 0x174f,
2551 .idProduct = 0x8a31,
2552 .bInterfaceClass = USB_CLASS_VIDEO,
2553 .bInterfaceSubClass = 1,
2554 .bInterfaceProtocol = 0,
c0efd232
LP		 2555 .driver_info = UVC_QUIRK_STREAM_NO_FID },
2556 /* Syntek (Asus U3S) */
2557 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2558 | USB_DEVICE_ID_MATCH_INT_INFO,
2559 .idVendor = 0x174f,
2560 .idProduct = 0x8a33,
2561 .bInterfaceClass = USB_CLASS_VIDEO,
2562 .bInterfaceSubClass = 1,
2563 .bInterfaceProtocol = 0,
2564 .driver_info = UVC_QUIRK_STREAM_NO_FID },
0ce566da
LP		 2565 /* Syntek (JAOtech Smart Terminal) */
2566 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2567 | USB_DEVICE_ID_MATCH_INT_INFO,
2568 .idVendor = 0x174f,
2569 .idProduct = 0x8a34,
2570 .bInterfaceClass = USB_CLASS_VIDEO,
2571 .bInterfaceSubClass = 1,
2572 .bInterfaceProtocol = 0,
2573 .driver_info = UVC_QUIRK_STREAM_NO_FID },
70092c26
LP		 2574 /* Miricle 307K */
2575 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2576 | USB_DEVICE_ID_MATCH_INT_INFO,
2577 .idVendor = 0x17dc,
2578 .idProduct = 0x0202,
2579 .bInterfaceClass = USB_CLASS_VIDEO,
2580 .bInterfaceSubClass = 1,
2581 .bInterfaceProtocol = 0,
2582 .driver_info = UVC_QUIRK_STREAM_NO_FID },
849a3aba 2583 /* Lenovo Thinkpad SL400/SL500 */
2f38483b
LP		 2584 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2585 | USB_DEVICE_ID_MATCH_INT_INFO,
2586 .idVendor = 0x17ef,
2587 .idProduct = 0x480b,
2588 .bInterfaceClass = USB_CLASS_VIDEO,
2589 .bInterfaceSubClass = 1,
2590 .bInterfaceProtocol = 0,
2591 .driver_info = UVC_QUIRK_STREAM_NO_FID },
2d2bf2a3
LP		 2592 /* Aveo Technology USB 2.0 Camera */
2593 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2594 | USB_DEVICE_ID_MATCH_INT_INFO,
2595 .idVendor = 0x1871,
2596 .idProduct = 0x0306,
2597 .bInterfaceClass = USB_CLASS_VIDEO,
2598 .bInterfaceSubClass = 1,
2599 .bInterfaceProtocol = 0,
5bdf1377
LP		 2600 .driver_info = UVC_QUIRK_PROBE_MINMAX
2601 | UVC_QUIRK_PROBE_EXTRAFIELDS },
fe652471
LP		 2602 /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */
2603 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2604 | USB_DEVICE_ID_MATCH_INT_INFO,
2605 .idVendor = 0x1871,
2606 .idProduct = 0x0516,
2607 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2608 .bInterfaceSubClass = 1,
2609 .bInterfaceProtocol = 0 },
c0efd232
LP		 2610 /* Ecamm Pico iMage */
2611 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2612 | USB_DEVICE_ID_MATCH_INT_INFO,
2613 .idVendor = 0x18cd,
2614 .idProduct = 0xcafe,
2615 .bInterfaceClass = USB_CLASS_VIDEO,
2616 .bInterfaceSubClass = 1,
2617 .bInterfaceProtocol = 0,
2618 .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS },
2bb00fe6
LP		 2619 /* Manta MM-353 Plako */
2620 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2621 | USB_DEVICE_ID_MATCH_INT_INFO,
2622 .idVendor = 0x18ec,
2623 .idProduct = 0x3188,
2624 .bInterfaceClass = USB_CLASS_VIDEO,
2625 .bInterfaceSubClass = 1,
2626 .bInterfaceProtocol = 0,
2627 .driver_info = UVC_QUIRK_PROBE_MINMAX },
ca4a3456
LP		 2628 /* FSC WebCam V30S */
2629 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2630 | USB_DEVICE_ID_MATCH_INT_INFO,
2631 .idVendor = 0x18ec,
2632 .idProduct = 0x3288,
2633 .bInterfaceClass = USB_CLASS_VIDEO,
2634 .bInterfaceSubClass = 1,
2635 .bInterfaceProtocol = 0,
2636 .driver_info = UVC_QUIRK_PROBE_MINMAX },
1e4d05bc
LP		 2637 /* Arkmicro unbranded */
2638 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2639 | USB_DEVICE_ID_MATCH_INT_INFO,
2640 .idVendor = 0x18ec,
2641 .idProduct = 0x3290,
2642 .bInterfaceClass = USB_CLASS_VIDEO,
2643 .bInterfaceSubClass = 1,
2644 .bInterfaceProtocol = 0,
2645 .driver_info = UVC_QUIRK_PROBE_DEF },
fd3e9f2f
AC		 2646 /* The Imaging Source USB CCD cameras */
2647 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2648 | USB_DEVICE_ID_MATCH_INT_INFO,
2649 .idVendor = 0x199e,
2650 .idProduct = 0x8102,
2651 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2652 .bInterfaceSubClass = 1,
2653 .bInterfaceProtocol = 0 },
c0efd232
LP		 2654 /* Bodelin ProScopeHR */
2655 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2656 | USB_DEVICE_ID_MATCH_DEV_HI
2657 | USB_DEVICE_ID_MATCH_INT_INFO,
2658 .idVendor = 0x19ab,
2659 .idProduct = 0x1000,
2660 .bcdDevice_hi = 0x0126,
2661 .bInterfaceClass = USB_CLASS_VIDEO,
2662 .bInterfaceSubClass = 1,
2663 .bInterfaceProtocol = 0,
2664 .driver_info = UVC_QUIRK_STATUS_INTERVAL },
3bc766ad
LP		 2665 /* MSI StarCam 370i */
2666 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2667 | USB_DEVICE_ID_MATCH_INT_INFO,
2668 .idVendor = 0x1b3b,
2669 .idProduct = 0x2951,
2670 .bInterfaceClass = USB_CLASS_VIDEO,
2671 .bInterfaceSubClass = 1,
2672 .bInterfaceProtocol = 0,
2673 .driver_info = UVC_QUIRK_PROBE_MINMAX },
c0efd232
LP		 2674 /* SiGma Micro USB Web Camera */
2675 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2676 | USB_DEVICE_ID_MATCH_INT_INFO,
2677 .idVendor = 0x1c4f,
2678 .idProduct = 0x3000,
2679 .bInterfaceClass = USB_CLASS_VIDEO,
2680 .bInterfaceSubClass = 1,
2681 .bInterfaceProtocol = 0,
2682 .driver_info = UVC_QUIRK_PROBE_MINMAX
d732c44c 2683 | UVC_QUIRK_IGNORE_SELECTOR_UNIT },
e1b78a33
PZ		 2684 /* Oculus VR Positional Tracker DK2 */
2685 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2686 | USB_DEVICE_ID_MATCH_INT_INFO,
2687 .idVendor = 0x2833,
2688 .idProduct = 0x0201,
2689 .bInterfaceClass = USB_CLASS_VIDEO,
2690 .bInterfaceSubClass = 1,
2691 .bInterfaceProtocol = 0,
2692 .driver_info = UVC_QUIRK_FORCE_Y8 },
03c47aae
PZ		 2693 /* Oculus VR Rift Sensor */
2694 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
2695 | USB_DEVICE_ID_MATCH_INT_INFO,
2696 .idVendor = 0x2833,
2697 .idProduct = 0x0211,
2698 .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
2699 .bInterfaceSubClass = 1,
2700 .bInterfaceProtocol = 0,
2701 .driver_info = UVC_QUIRK_FORCE_Y8 },
c0efd232 2702 /* Generic USB Video Class */
8afe97be
LP		 2703 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) },
2704 { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) },
c0efd232
LP		 2705 {}
2706};
2707
2708MODULE_DEVICE_TABLE(usb, uvc_ids);
2709
2710struct uvc_driver uvc_driver = {
2711 .driver = {
2712 .name = "uvcvideo",
2713 .probe = uvc_probe,
2714 .disconnect = uvc_disconnect,
2715 .suspend = uvc_suspend,
2716 .resume = uvc_resume,
9b0ae867 2717 .reset_resume = uvc_reset_resume,
c0efd232
LP		 2718 .id_table = uvc_ids,
2719 .supports_autosuspend = 1,
2720 },
2721};
2722
2723static int __init uvc_init(void)
2724{
edbaa398 2725 int ret;
c0efd232 2726
edbaa398
OR		 2727 uvc_debugfs_init();
2728
2729 ret = usb_register(&uvc_driver.driver);
2730 if (ret < 0) {
2731 uvc_debugfs_cleanup();
2732 return ret;
2733 }
2734
2735 printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n");
2736 return 0;
c0efd232
LP		 2737}
2738
2739static void __exit uvc_cleanup(void)
2740{
2741 usb_deregister(&uvc_driver.driver);
edbaa398 2742 uvc_debugfs_cleanup();
c0efd232
LP		 2743}
2744
2745module_init(uvc_init);
2746module_exit(uvc_cleanup);
2747
c0efd232
LP		 2748MODULE_AUTHOR(DRIVER_AUTHOR);
2749MODULE_DESCRIPTION(DRIVER_DESC);
2750MODULE_LICENSE("GPL");
2751MODULE_VERSION(DRIVER_VERSION);
f87086e3 2752
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