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Commit | Line | Data |
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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 | 34 | unsigned int uvc_clock_param = CLOCK_MONOTONIC; |
5d0fd3c8 | 35 | unsigned int uvc_hw_timestamps_param; |
0fbd8ee6 | 36 | unsigned int uvc_no_drop_param; |
73de3592 | 37 | static unsigned int uvc_quirks_param = -1; |
c0efd232 | 38 | unsigned int uvc_trace_param; |
b232a012 | 39 | unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; |
c0efd232 LP |
40 | |
41 | /* ------------------------------------------------------------------------ | |
2c2d264b | 42 | * Video formats |
c0efd232 LP |
43 | */ |
44 | ||
45 | static 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 | }, | |
c4a0968a DPJ |
191 | { |
192 | .name = "Depth data 16-bit (Z16)", | |
193 | .guid = UVC_GUID_FORMAT_INVZ, | |
194 | .fcc = V4L2_PIX_FMT_Z16, | |
195 | }, | |
196 | { | |
197 | .name = "Greyscale 10-bit (Y10 )", | |
198 | .guid = UVC_GUID_FORMAT_INVI, | |
199 | .fcc = V4L2_PIX_FMT_Y10, | |
200 | }, | |
201 | { | |
202 | .name = "IR:Depth 26-bit (INZI)", | |
203 | .guid = UVC_GUID_FORMAT_INZI, | |
204 | .fcc = V4L2_PIX_FMT_INZI, | |
205 | }, | |
c0efd232 LP |
206 | }; |
207 | ||
208 | /* ------------------------------------------------------------------------ | |
209 | * Utility functions | |
210 | */ | |
211 | ||
212 | struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, | |
213 | __u8 epaddr) | |
214 | { | |
215 | struct usb_host_endpoint *ep; | |
216 | unsigned int i; | |
217 | ||
218 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
219 | ep = &alts->endpoint[i]; | |
220 | if (ep->desc.bEndpointAddress == epaddr) | |
221 | return ep; | |
222 | } | |
223 | ||
224 | return NULL; | |
225 | } | |
226 | ||
227 | static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) | |
228 | { | |
229 | unsigned int len = ARRAY_SIZE(uvc_fmts); | |
230 | unsigned int i; | |
231 | ||
232 | for (i = 0; i < len; ++i) { | |
233 | if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) | |
234 | return &uvc_fmts[i]; | |
235 | } | |
236 | ||
237 | return NULL; | |
238 | } | |
239 | ||
240 | static __u32 uvc_colorspace(const __u8 primaries) | |
241 | { | |
242 | static const __u8 colorprimaries[] = { | |
243 | 0, | |
244 | V4L2_COLORSPACE_SRGB, | |
245 | V4L2_COLORSPACE_470_SYSTEM_M, | |
246 | V4L2_COLORSPACE_470_SYSTEM_BG, | |
247 | V4L2_COLORSPACE_SMPTE170M, | |
248 | V4L2_COLORSPACE_SMPTE240M, | |
249 | }; | |
250 | ||
251 | if (primaries < ARRAY_SIZE(colorprimaries)) | |
252 | return colorprimaries[primaries]; | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | /* Simplify a fraction using a simple continued fraction decomposition. The | |
258 | * idea here is to convert fractions such as 333333/10000000 to 1/30 using | |
259 | * 32 bit arithmetic only. The algorithm is not perfect and relies upon two | |
260 | * arbitrary parameters to remove non-significative terms from the simple | |
261 | * continued fraction decomposition. Using 8 and 333 for n_terms and threshold | |
262 | * respectively seems to give nice results. | |
263 | */ | |
264 | void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, | |
265 | unsigned int n_terms, unsigned int threshold) | |
266 | { | |
267 | uint32_t *an; | |
268 | uint32_t x, y, r; | |
269 | unsigned int i, n; | |
270 | ||
271 | an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); | |
272 | if (an == NULL) | |
273 | return; | |
274 | ||
275 | /* Convert the fraction to a simple continued fraction. See | |
276 | * http://mathforum.org/dr.math/faq/faq.fractions.html | |
277 | * Stop if the current term is bigger than or equal to the given | |
278 | * threshold. | |
279 | */ | |
280 | x = *numerator; | |
281 | y = *denominator; | |
282 | ||
283 | for (n = 0; n < n_terms && y != 0; ++n) { | |
284 | an[n] = x / y; | |
285 | if (an[n] >= threshold) { | |
286 | if (n < 2) | |
287 | n++; | |
288 | break; | |
289 | } | |
290 | ||
291 | r = x - an[n] * y; | |
292 | x = y; | |
293 | y = r; | |
294 | } | |
295 | ||
296 | /* Expand the simple continued fraction back to an integer fraction. */ | |
297 | x = 0; | |
298 | y = 1; | |
299 | ||
300 | for (i = n; i > 0; --i) { | |
301 | r = y; | |
302 | y = an[i-1] * y + x; | |
303 | x = r; | |
304 | } | |
305 | ||
306 | *numerator = y; | |
307 | *denominator = x; | |
308 | kfree(an); | |
309 | } | |
310 | ||
311 | /* Convert a fraction to a frame interval in 100ns multiples. The idea here is | |
312 | * to compute numerator / denominator * 10000000 using 32 bit fixed point | |
313 | * arithmetic only. | |
314 | */ | |
315 | uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) | |
316 | { | |
317 | uint32_t multiplier; | |
318 | ||
319 | /* Saturate the result if the operation would overflow. */ | |
320 | if (denominator == 0 || | |
321 | numerator/denominator >= ((uint32_t)-1)/10000000) | |
322 | return (uint32_t)-1; | |
323 | ||
324 | /* Divide both the denominator and the multiplier by two until | |
325 | * numerator * multiplier doesn't overflow. If anyone knows a better | |
326 | * algorithm please let me know. | |
327 | */ | |
328 | multiplier = 10000000; | |
329 | while (numerator > ((uint32_t)-1)/multiplier) { | |
330 | multiplier /= 2; | |
331 | denominator /= 2; | |
332 | } | |
333 | ||
334 | return denominator ? numerator * multiplier / denominator : 0; | |
335 | } | |
336 | ||
337 | /* ------------------------------------------------------------------------ | |
338 | * Terminal and unit management | |
339 | */ | |
340 | ||
4ffc2d89 | 341 | struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) |
c0efd232 LP |
342 | { |
343 | struct uvc_entity *entity; | |
344 | ||
345 | list_for_each_entry(entity, &dev->entities, list) { | |
346 | if (entity->id == id) | |
347 | return entity; | |
348 | } | |
349 | ||
350 | return NULL; | |
351 | } | |
352 | ||
353 | static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, | |
354 | int id, struct uvc_entity *entity) | |
355 | { | |
356 | unsigned int i; | |
357 | ||
358 | if (entity == NULL) | |
359 | entity = list_entry(&dev->entities, struct uvc_entity, list); | |
360 | ||
361 | list_for_each_entry_continue(entity, &dev->entities, list) { | |
8ca5a639 LP |
362 | for (i = 0; i < entity->bNrInPins; ++i) |
363 | if (entity->baSourceID[i] == id) | |
c0efd232 | 364 | return entity; |
c0efd232 LP |
365 | } |
366 | ||
367 | return NULL; | |
368 | } | |
369 | ||
8e113595 LP |
370 | static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) |
371 | { | |
372 | struct uvc_streaming *stream; | |
373 | ||
374 | list_for_each_entry(stream, &dev->streams, list) { | |
375 | if (stream->header.bTerminalLink == id) | |
376 | return stream; | |
377 | } | |
378 | ||
379 | return NULL; | |
380 | } | |
381 | ||
c0efd232 | 382 | /* ------------------------------------------------------------------------ |
8e113595 | 383 | * Descriptors parsing |
c0efd232 LP |
384 | */ |
385 | ||
386 | static int uvc_parse_format(struct uvc_device *dev, | |
387 | struct uvc_streaming *streaming, struct uvc_format *format, | |
388 | __u32 **intervals, unsigned char *buffer, int buflen) | |
389 | { | |
390 | struct usb_interface *intf = streaming->intf; | |
391 | struct usb_host_interface *alts = intf->cur_altsetting; | |
392 | struct uvc_format_desc *fmtdesc; | |
393 | struct uvc_frame *frame; | |
394 | const unsigned char *start = buffer; | |
e1b78a33 | 395 | unsigned int width_multiplier = 1; |
c0efd232 LP |
396 | unsigned int interval; |
397 | unsigned int i, n; | |
398 | __u8 ftype; | |
399 | ||
400 | format->type = buffer[2]; | |
401 | format->index = buffer[3]; | |
402 | ||
403 | switch (buffer[2]) { | |
b482d923 LP |
404 | case UVC_VS_FORMAT_UNCOMPRESSED: |
405 | case UVC_VS_FORMAT_FRAME_BASED: | |
406 | n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; | |
233548a2 | 407 | if (buflen < n) { |
b2d9cc42 | 408 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
409 | "interface %d FORMAT error\n", |
410 | dev->udev->devnum, | |
411 | alts->desc.bInterfaceNumber); | |
412 | return -EINVAL; | |
413 | } | |
414 | ||
415 | /* Find the format descriptor from its GUID. */ | |
416 | fmtdesc = uvc_format_by_guid(&buffer[5]); | |
417 | ||
418 | if (fmtdesc != NULL) { | |
d0ebf307 | 419 | strlcpy(format->name, fmtdesc->name, |
c0efd232 LP |
420 | sizeof format->name); |
421 | format->fcc = fmtdesc->fcc; | |
422 | } else { | |
36bd883e LP |
423 | uvc_printk(KERN_INFO, "Unknown video format %pUl\n", |
424 | &buffer[5]); | |
425 | snprintf(format->name, sizeof(format->name), "%pUl\n", | |
426 | &buffer[5]); | |
c0efd232 LP |
427 | format->fcc = 0; |
428 | } | |
429 | ||
430 | format->bpp = buffer[21]; | |
e1b78a33 PZ |
431 | |
432 | /* Some devices report a format that doesn't match what they | |
433 | * really send. | |
434 | */ | |
435 | if (dev->quirks & UVC_QUIRK_FORCE_Y8) { | |
436 | if (format->fcc == V4L2_PIX_FMT_YUYV) { | |
437 | strlcpy(format->name, "Greyscale 8-bit (Y8 )", | |
438 | sizeof(format->name)); | |
439 | format->fcc = V4L2_PIX_FMT_GREY; | |
440 | format->bpp = 8; | |
441 | width_multiplier = 2; | |
442 | } | |
443 | } | |
444 | ||
b482d923 LP |
445 | if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { |
446 | ftype = UVC_VS_FRAME_UNCOMPRESSED; | |
c0efd232 | 447 | } else { |
b482d923 | 448 | ftype = UVC_VS_FRAME_FRAME_BASED; |
c0efd232 LP |
449 | if (buffer[27]) |
450 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
451 | } | |
452 | break; | |
453 | ||
b482d923 | 454 | case UVC_VS_FORMAT_MJPEG: |
c0efd232 | 455 | if (buflen < 11) { |
b2d9cc42 | 456 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
457 | "interface %d FORMAT error\n", |
458 | dev->udev->devnum, | |
459 | alts->desc.bInterfaceNumber); | |
460 | return -EINVAL; | |
461 | } | |
462 | ||
d0ebf307 | 463 | strlcpy(format->name, "MJPEG", sizeof format->name); |
c0efd232 LP |
464 | format->fcc = V4L2_PIX_FMT_MJPEG; |
465 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
466 | format->bpp = 0; | |
b482d923 | 467 | ftype = UVC_VS_FRAME_MJPEG; |
c0efd232 LP |
468 | break; |
469 | ||
b482d923 | 470 | case UVC_VS_FORMAT_DV: |
c0efd232 | 471 | if (buflen < 9) { |
b2d9cc42 | 472 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
473 | "interface %d FORMAT error\n", |
474 | dev->udev->devnum, | |
475 | alts->desc.bInterfaceNumber); | |
476 | return -EINVAL; | |
477 | } | |
478 | ||
479 | switch (buffer[8] & 0x7f) { | |
480 | case 0: | |
d0ebf307 | 481 | strlcpy(format->name, "SD-DV", sizeof format->name); |
c0efd232 LP |
482 | break; |
483 | case 1: | |
d0ebf307 | 484 | strlcpy(format->name, "SDL-DV", sizeof format->name); |
c0efd232 LP |
485 | break; |
486 | case 2: | |
d0ebf307 | 487 | strlcpy(format->name, "HD-DV", sizeof format->name); |
c0efd232 LP |
488 | break; |
489 | default: | |
b2d9cc42 | 490 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
491 | "interface %d: unknown DV format %u\n", |
492 | dev->udev->devnum, | |
493 | alts->desc.bInterfaceNumber, buffer[8]); | |
494 | return -EINVAL; | |
495 | } | |
496 | ||
d0ebf307 | 497 | strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", |
c0efd232 LP |
498 | sizeof format->name); |
499 | ||
500 | format->fcc = V4L2_PIX_FMT_DV; | |
501 | format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; | |
502 | format->bpp = 0; | |
503 | ftype = 0; | |
504 | ||
505 | /* Create a dummy frame descriptor. */ | |
506 | frame = &format->frame[0]; | |
507 | memset(&format->frame[0], 0, sizeof format->frame[0]); | |
508 | frame->bFrameIntervalType = 1; | |
509 | frame->dwDefaultFrameInterval = 1; | |
510 | frame->dwFrameInterval = *intervals; | |
511 | *(*intervals)++ = 1; | |
512 | format->nframes = 1; | |
513 | break; | |
514 | ||
b482d923 LP |
515 | case UVC_VS_FORMAT_MPEG2TS: |
516 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
517 | /* Not supported yet. */ |
518 | default: | |
b2d9cc42 | 519 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
520 | "interface %d unsupported format %u\n", |
521 | dev->udev->devnum, alts->desc.bInterfaceNumber, | |
522 | buffer[2]); | |
523 | return -EINVAL; | |
524 | } | |
525 | ||
526 | uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); | |
527 | ||
528 | buflen -= buffer[0]; | |
529 | buffer += buffer[0]; | |
530 | ||
531 | /* Parse the frame descriptors. Only uncompressed, MJPEG and frame | |
532 | * based formats have frame descriptors. | |
533 | */ | |
c4ed8c66 LP |
534 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
535 | buffer[2] == ftype) { | |
078f8947 | 536 | frame = &format->frame[format->nframes]; |
b482d923 | 537 | if (ftype != UVC_VS_FRAME_FRAME_BASED) |
c0efd232 LP |
538 | n = buflen > 25 ? buffer[25] : 0; |
539 | else | |
540 | n = buflen > 21 ? buffer[21] : 0; | |
541 | ||
542 | n = n ? n : 3; | |
543 | ||
544 | if (buflen < 26 + 4*n) { | |
b2d9cc42 | 545 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
546 | "interface %d FRAME error\n", dev->udev->devnum, |
547 | alts->desc.bInterfaceNumber); | |
548 | return -EINVAL; | |
549 | } | |
550 | ||
551 | frame->bFrameIndex = buffer[3]; | |
552 | frame->bmCapabilities = buffer[4]; | |
e1b78a33 PZ |
553 | frame->wWidth = get_unaligned_le16(&buffer[5]) |
554 | * width_multiplier; | |
9bc6218d MH |
555 | frame->wHeight = get_unaligned_le16(&buffer[7]); |
556 | frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); | |
557 | frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); | |
b482d923 | 558 | if (ftype != UVC_VS_FRAME_FRAME_BASED) { |
c0efd232 | 559 | frame->dwMaxVideoFrameBufferSize = |
9bc6218d | 560 | get_unaligned_le32(&buffer[17]); |
c0efd232 | 561 | frame->dwDefaultFrameInterval = |
9bc6218d | 562 | get_unaligned_le32(&buffer[21]); |
c0efd232 LP |
563 | frame->bFrameIntervalType = buffer[25]; |
564 | } else { | |
565 | frame->dwMaxVideoFrameBufferSize = 0; | |
566 | frame->dwDefaultFrameInterval = | |
9bc6218d | 567 | get_unaligned_le32(&buffer[17]); |
c0efd232 LP |
568 | frame->bFrameIntervalType = buffer[21]; |
569 | } | |
570 | frame->dwFrameInterval = *intervals; | |
571 | ||
572 | /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize | |
573 | * completely. Observed behaviours range from setting the | |
2c2d264b | 574 | * value to 1.1x the actual frame size to hardwiring the |
c0efd232 LP |
575 | * 16 low bits to 0. This results in a higher than necessary |
576 | * memory usage as well as a wrong image size information. For | |
577 | * uncompressed formats this can be fixed by computing the | |
578 | * value from the frame size. | |
579 | */ | |
580 | if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) | |
581 | frame->dwMaxVideoFrameBufferSize = format->bpp | |
582 | * frame->wWidth * frame->wHeight / 8; | |
583 | ||
584 | /* Some bogus devices report dwMinFrameInterval equal to | |
585 | * dwMaxFrameInterval and have dwFrameIntervalStep set to | |
586 | * zero. Setting all null intervals to 1 fixes the problem and | |
2c2d264b | 587 | * some other divisions by zero that could happen. |
c0efd232 LP |
588 | */ |
589 | for (i = 0; i < n; ++i) { | |
9bc6218d | 590 | interval = get_unaligned_le32(&buffer[26+4*i]); |
c0efd232 LP |
591 | *(*intervals)++ = interval ? interval : 1; |
592 | } | |
593 | ||
594 | /* Make sure that the default frame interval stays between | |
595 | * the boundaries. | |
596 | */ | |
597 | n -= frame->bFrameIntervalType ? 1 : 2; | |
598 | frame->dwDefaultFrameInterval = | |
599 | min(frame->dwFrameInterval[n], | |
600 | max(frame->dwFrameInterval[0], | |
601 | frame->dwDefaultFrameInterval)); | |
602 | ||
86d8b6ab LP |
603 | if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { |
604 | frame->bFrameIntervalType = 1; | |
605 | frame->dwFrameInterval[0] = | |
606 | frame->dwDefaultFrameInterval; | |
607 | } | |
608 | ||
c0efd232 LP |
609 | uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", |
610 | frame->wWidth, frame->wHeight, | |
611 | 10000000/frame->dwDefaultFrameInterval, | |
612 | (100000000/frame->dwDefaultFrameInterval)%10); | |
613 | ||
078f8947 | 614 | format->nframes++; |
c0efd232 LP |
615 | buflen -= buffer[0]; |
616 | buffer += buffer[0]; | |
617 | } | |
618 | ||
c4ed8c66 LP |
619 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
620 | buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { | |
c0efd232 LP |
621 | buflen -= buffer[0]; |
622 | buffer += buffer[0]; | |
623 | } | |
624 | ||
c4ed8c66 LP |
625 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
626 | buffer[2] == UVC_VS_COLORFORMAT) { | |
c0efd232 | 627 | if (buflen < 6) { |
b2d9cc42 | 628 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
629 | "interface %d COLORFORMAT error\n", |
630 | dev->udev->devnum, | |
631 | alts->desc.bInterfaceNumber); | |
632 | return -EINVAL; | |
633 | } | |
634 | ||
635 | format->colorspace = uvc_colorspace(buffer[3]); | |
636 | ||
637 | buflen -= buffer[0]; | |
638 | buffer += buffer[0]; | |
639 | } | |
640 | ||
641 | return buffer - start; | |
642 | } | |
643 | ||
644 | static int uvc_parse_streaming(struct uvc_device *dev, | |
645 | struct usb_interface *intf) | |
646 | { | |
647 | struct uvc_streaming *streaming = NULL; | |
648 | struct uvc_format *format; | |
649 | struct uvc_frame *frame; | |
650 | struct usb_host_interface *alts = &intf->altsetting[0]; | |
651 | unsigned char *_buffer, *buffer = alts->extra; | |
652 | int _buflen, buflen = alts->extralen; | |
653 | unsigned int nformats = 0, nframes = 0, nintervals = 0; | |
654 | unsigned int size, i, n, p; | |
655 | __u32 *interval; | |
656 | __u16 psize; | |
657 | int ret = -EINVAL; | |
658 | ||
659 | if (intf->cur_altsetting->desc.bInterfaceSubClass | |
b482d923 | 660 | != UVC_SC_VIDEOSTREAMING) { |
c0efd232 LP |
661 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " |
662 | "video streaming interface\n", dev->udev->devnum, | |
663 | intf->altsetting[0].desc.bInterfaceNumber); | |
664 | return -EINVAL; | |
665 | } | |
666 | ||
667 | if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { | |
668 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " | |
669 | "claimed\n", dev->udev->devnum, | |
670 | intf->altsetting[0].desc.bInterfaceNumber); | |
671 | return -EINVAL; | |
672 | } | |
673 | ||
674 | streaming = kzalloc(sizeof *streaming, GFP_KERNEL); | |
675 | if (streaming == NULL) { | |
676 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
677 | return -EINVAL; | |
678 | } | |
679 | ||
680 | mutex_init(&streaming->mutex); | |
35f02a68 | 681 | streaming->dev = dev; |
c0efd232 LP |
682 | streaming->intf = usb_get_intf(intf); |
683 | streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
684 | ||
685 | /* The Pico iMage webcam has its class-specific interface descriptors | |
686 | * after the endpoint descriptors. | |
687 | */ | |
688 | if (buflen == 0) { | |
689 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
690 | struct usb_host_endpoint *ep = &alts->endpoint[i]; | |
691 | ||
692 | if (ep->extralen == 0) | |
693 | continue; | |
694 | ||
695 | if (ep->extralen > 2 && | |
696 | ep->extra[1] == USB_DT_CS_INTERFACE) { | |
697 | uvc_trace(UVC_TRACE_DESCR, "trying extra data " | |
698 | "from endpoint %u.\n", i); | |
699 | buffer = alts->endpoint[i].extra; | |
700 | buflen = alts->endpoint[i].extralen; | |
701 | break; | |
702 | } | |
703 | } | |
704 | } | |
705 | ||
706 | /* Skip the standard interface descriptors. */ | |
707 | while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { | |
708 | buflen -= buffer[0]; | |
709 | buffer += buffer[0]; | |
710 | } | |
711 | ||
712 | if (buflen <= 2) { | |
713 | uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " | |
714 | "interface descriptors found.\n"); | |
715 | goto error; | |
716 | } | |
717 | ||
718 | /* Parse the header descriptor. */ | |
ff924203 | 719 | switch (buffer[2]) { |
b482d923 | 720 | case UVC_VS_OUTPUT_HEADER: |
ff924203 LP |
721 | streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
722 | size = 9; | |
723 | break; | |
724 | ||
b482d923 | 725 | case UVC_VS_INPUT_HEADER: |
ff924203 LP |
726 | streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
727 | size = 13; | |
728 | break; | |
729 | ||
730 | default: | |
c0efd232 | 731 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
ff924203 LP |
732 | "%d HEADER descriptor not found.\n", dev->udev->devnum, |
733 | alts->desc.bInterfaceNumber); | |
c0efd232 | 734 | goto error; |
ff924203 | 735 | } |
c0efd232 | 736 | |
ff924203 LP |
737 | p = buflen >= 4 ? buffer[3] : 0; |
738 | n = buflen >= size ? buffer[size-1] : 0; | |
739 | ||
740 | if (buflen < size + p*n) { | |
741 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " | |
742 | "interface %d HEADER descriptor is invalid.\n", | |
743 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
744 | goto error; | |
745 | } | |
c0efd232 | 746 | |
ff924203 LP |
747 | streaming->header.bNumFormats = p; |
748 | streaming->header.bEndpointAddress = buffer[6]; | |
b482d923 | 749 | if (buffer[2] == UVC_VS_INPUT_HEADER) { |
c0efd232 LP |
750 | streaming->header.bmInfo = buffer[7]; |
751 | streaming->header.bTerminalLink = buffer[8]; | |
752 | streaming->header.bStillCaptureMethod = buffer[9]; | |
753 | streaming->header.bTriggerSupport = buffer[10]; | |
754 | streaming->header.bTriggerUsage = buffer[11]; | |
c0efd232 | 755 | } else { |
ff924203 LP |
756 | streaming->header.bTerminalLink = buffer[7]; |
757 | } | |
758 | streaming->header.bControlSize = n; | |
759 | ||
0b21d55f JL |
760 | streaming->header.bmaControls = kmemdup(&buffer[size], p * n, |
761 | GFP_KERNEL); | |
ff924203 LP |
762 | if (streaming->header.bmaControls == NULL) { |
763 | ret = -ENOMEM; | |
c0efd232 LP |
764 | goto error; |
765 | } | |
766 | ||
767 | buflen -= buffer[0]; | |
768 | buffer += buffer[0]; | |
769 | ||
770 | _buffer = buffer; | |
771 | _buflen = buflen; | |
772 | ||
773 | /* Count the format and frame descriptors. */ | |
042e143e | 774 | while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 775 | switch (_buffer[2]) { |
b482d923 LP |
776 | case UVC_VS_FORMAT_UNCOMPRESSED: |
777 | case UVC_VS_FORMAT_MJPEG: | |
778 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
779 | nformats++; |
780 | break; | |
781 | ||
b482d923 | 782 | case UVC_VS_FORMAT_DV: |
c0efd232 LP |
783 | /* DV format has no frame descriptor. We will create a |
784 | * dummy frame descriptor with a dummy frame interval. | |
785 | */ | |
786 | nformats++; | |
787 | nframes++; | |
788 | nintervals++; | |
789 | break; | |
790 | ||
b482d923 LP |
791 | case UVC_VS_FORMAT_MPEG2TS: |
792 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
793 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
794 | "interface %d FORMAT %u is not supported.\n", | |
795 | dev->udev->devnum, | |
796 | alts->desc.bInterfaceNumber, _buffer[2]); | |
797 | break; | |
798 | ||
b482d923 LP |
799 | case UVC_VS_FRAME_UNCOMPRESSED: |
800 | case UVC_VS_FRAME_MJPEG: | |
c0efd232 LP |
801 | nframes++; |
802 | if (_buflen > 25) | |
803 | nintervals += _buffer[25] ? _buffer[25] : 3; | |
804 | break; | |
805 | ||
b482d923 | 806 | case UVC_VS_FRAME_FRAME_BASED: |
c0efd232 LP |
807 | nframes++; |
808 | if (_buflen > 21) | |
809 | nintervals += _buffer[21] ? _buffer[21] : 3; | |
810 | break; | |
811 | } | |
812 | ||
813 | _buflen -= _buffer[0]; | |
814 | _buffer += _buffer[0]; | |
815 | } | |
816 | ||
817 | if (nformats == 0) { | |
818 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
819 | "%d has no supported formats defined.\n", | |
820 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
821 | goto error; | |
822 | } | |
823 | ||
824 | size = nformats * sizeof *format + nframes * sizeof *frame | |
825 | + nintervals * sizeof *interval; | |
826 | format = kzalloc(size, GFP_KERNEL); | |
827 | if (format == NULL) { | |
828 | ret = -ENOMEM; | |
829 | goto error; | |
830 | } | |
831 | ||
832 | frame = (struct uvc_frame *)&format[nformats]; | |
833 | interval = (__u32 *)&frame[nframes]; | |
834 | ||
835 | streaming->format = format; | |
836 | streaming->nformats = nformats; | |
837 | ||
838 | /* Parse the format descriptors. */ | |
042e143e | 839 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 840 | switch (buffer[2]) { |
b482d923 LP |
841 | case UVC_VS_FORMAT_UNCOMPRESSED: |
842 | case UVC_VS_FORMAT_MJPEG: | |
843 | case UVC_VS_FORMAT_DV: | |
844 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
845 | format->frame = frame; |
846 | ret = uvc_parse_format(dev, streaming, format, | |
847 | &interval, buffer, buflen); | |
848 | if (ret < 0) | |
849 | goto error; | |
850 | ||
851 | frame += format->nframes; | |
852 | format++; | |
853 | ||
854 | buflen -= ret; | |
855 | buffer += ret; | |
856 | continue; | |
857 | ||
858 | default: | |
859 | break; | |
860 | } | |
861 | ||
862 | buflen -= buffer[0]; | |
863 | buffer += buffer[0]; | |
864 | } | |
865 | ||
c4ed8c66 LP |
866 | if (buflen) |
867 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
868 | "%d has %u bytes of trailing descriptor garbage.\n", | |
869 | dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); | |
870 | ||
c0efd232 LP |
871 | /* Parse the alternate settings to find the maximum bandwidth. */ |
872 | for (i = 0; i < intf->num_altsetting; ++i) { | |
873 | struct usb_host_endpoint *ep; | |
874 | alts = &intf->altsetting[i]; | |
875 | ep = uvc_find_endpoint(alts, | |
876 | streaming->header.bEndpointAddress); | |
877 | if (ep == NULL) | |
878 | continue; | |
879 | ||
880 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); | |
881 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
882 | if (psize > streaming->maxpsize) | |
883 | streaming->maxpsize = psize; | |
884 | } | |
885 | ||
35f02a68 | 886 | list_add_tail(&streaming->list, &dev->streams); |
c0efd232 LP |
887 | return 0; |
888 | ||
889 | error: | |
890 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
891 | usb_put_intf(intf); | |
892 | kfree(streaming->format); | |
893 | kfree(streaming->header.bmaControls); | |
894 | kfree(streaming); | |
895 | return ret; | |
896 | } | |
897 | ||
8ca5a639 LP |
898 | static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, |
899 | unsigned int num_pads, unsigned int extra_size) | |
900 | { | |
901 | struct uvc_entity *entity; | |
902 | unsigned int num_inputs; | |
903 | unsigned int size; | |
4ffc2d89 | 904 | unsigned int i; |
8ca5a639 | 905 | |
4ffc2d89 | 906 | extra_size = ALIGN(extra_size, sizeof(*entity->pads)); |
8ca5a639 | 907 | num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; |
4ffc2d89 LP |
908 | size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads |
909 | + num_inputs; | |
8ca5a639 LP |
910 | entity = kzalloc(size, GFP_KERNEL); |
911 | if (entity == NULL) | |
912 | return NULL; | |
913 | ||
914 | entity->id = id; | |
915 | entity->type = type; | |
916 | ||
4ffc2d89 LP |
917 | entity->num_links = 0; |
918 | entity->num_pads = num_pads; | |
919 | entity->pads = ((void *)(entity + 1)) + extra_size; | |
920 | ||
921 | for (i = 0; i < num_inputs; ++i) | |
922 | entity->pads[i].flags = MEDIA_PAD_FL_SINK; | |
923 | if (!UVC_ENTITY_IS_OTERM(entity)) | |
924 | entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; | |
925 | ||
8ca5a639 | 926 | entity->bNrInPins = num_inputs; |
4ffc2d89 | 927 | entity->baSourceID = (__u8 *)(&entity->pads[num_pads]); |
8ca5a639 LP |
928 | |
929 | return entity; | |
930 | } | |
931 | ||
c0efd232 LP |
932 | /* Parse vendor-specific extensions. */ |
933 | static int uvc_parse_vendor_control(struct uvc_device *dev, | |
934 | const unsigned char *buffer, int buflen) | |
935 | { | |
936 | struct usb_device *udev = dev->udev; | |
937 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
938 | struct uvc_entity *unit; | |
939 | unsigned int n, p; | |
940 | int handled = 0; | |
941 | ||
942 | switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { | |
943 | case 0x046d: /* Logitech */ | |
944 | if (buffer[1] != 0x41 || buffer[2] != 0x01) | |
945 | break; | |
946 | ||
947 | /* Logitech implements several vendor specific functions | |
948 | * through vendor specific extension units (LXU). | |
949 | * | |
950 | * The LXU descriptors are similar to XU descriptors | |
951 | * (see "USB Device Video Class for Video Devices", section | |
952 | * 3.7.2.6 "Extension Unit Descriptor") with the following | |
953 | * differences: | |
954 | * | |
955 | * ---------------------------------------------------------- | |
956 | * 0 bLength 1 Number | |
957 | * Size of this descriptor, in bytes: 24+p+n*2 | |
958 | * ---------------------------------------------------------- | |
959 | * 23+p+n bmControlsType N Bitmap | |
960 | * Individual bits in the set are defined: | |
961 | * 0: Absolute | |
962 | * 1: Relative | |
963 | * | |
964 | * This bitset is mapped exactly the same as bmControls. | |
965 | * ---------------------------------------------------------- | |
966 | * 23+p+n*2 bReserved 1 Boolean | |
967 | * ---------------------------------------------------------- | |
968 | * 24+p+n*2 iExtension 1 Index | |
969 | * Index of a string descriptor that describes this | |
970 | * extension unit. | |
971 | * ---------------------------------------------------------- | |
972 | */ | |
973 | p = buflen >= 22 ? buffer[21] : 0; | |
974 | n = buflen >= 25 + p ? buffer[22+p] : 0; | |
975 | ||
976 | if (buflen < 25 + p + 2*n) { | |
977 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
978 | "interface %d EXTENSION_UNIT error\n", | |
979 | udev->devnum, alts->desc.bInterfaceNumber); | |
980 | break; | |
981 | } | |
982 | ||
8ca5a639 LP |
983 | unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], |
984 | p + 1, 2*n); | |
c0efd232 LP |
985 | if (unit == NULL) |
986 | return -ENOMEM; | |
987 | ||
c0efd232 LP |
988 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
989 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 990 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 991 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 LP |
992 | unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); |
993 | unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) | |
994 | + n; | |
c0efd232 LP |
995 | memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); |
996 | ||
997 | if (buffer[24+p+2*n] != 0) | |
998 | usb_string(udev, buffer[24+p+2*n], unit->name, | |
999 | sizeof unit->name); | |
1000 | else | |
1001 | sprintf(unit->name, "Extension %u", buffer[3]); | |
1002 | ||
1003 | list_add_tail(&unit->list, &dev->entities); | |
1004 | handled = 1; | |
1005 | break; | |
1006 | } | |
1007 | ||
1008 | return handled; | |
1009 | } | |
1010 | ||
1011 | static int uvc_parse_standard_control(struct uvc_device *dev, | |
1012 | const unsigned char *buffer, int buflen) | |
1013 | { | |
1014 | struct usb_device *udev = dev->udev; | |
1015 | struct uvc_entity *unit, *term; | |
1016 | struct usb_interface *intf; | |
1017 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
1018 | unsigned int i, n, p, len; | |
1019 | __u16 type; | |
1020 | ||
1021 | switch (buffer[2]) { | |
b482d923 | 1022 | case UVC_VC_HEADER: |
c0efd232 LP |
1023 | n = buflen >= 12 ? buffer[11] : 0; |
1024 | ||
daf41ac2 | 1025 | if (buflen < 12 + n) { |
c0efd232 LP |
1026 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
1027 | "interface %d HEADER error\n", udev->devnum, | |
1028 | alts->desc.bInterfaceNumber); | |
1029 | return -EINVAL; | |
1030 | } | |
1031 | ||
9bc6218d MH |
1032 | dev->uvc_version = get_unaligned_le16(&buffer[3]); |
1033 | dev->clock_frequency = get_unaligned_le32(&buffer[7]); | |
c0efd232 LP |
1034 | |
1035 | /* Parse all USB Video Streaming interfaces. */ | |
1036 | for (i = 0; i < n; ++i) { | |
1037 | intf = usb_ifnum_to_if(udev, buffer[12+i]); | |
1038 | if (intf == NULL) { | |
1039 | uvc_trace(UVC_TRACE_DESCR, "device %d " | |
1040 | "interface %d doesn't exists\n", | |
1041 | udev->devnum, i); | |
1042 | continue; | |
1043 | } | |
1044 | ||
1045 | uvc_parse_streaming(dev, intf); | |
1046 | } | |
1047 | break; | |
1048 | ||
b482d923 | 1049 | case UVC_VC_INPUT_TERMINAL: |
c0efd232 LP |
1050 | if (buflen < 8) { |
1051 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1052 | "interface %d INPUT_TERMINAL error\n", | |
1053 | udev->devnum, alts->desc.bInterfaceNumber); | |
1054 | return -EINVAL; | |
1055 | } | |
1056 | ||
1057 | /* Make sure the terminal type MSB is not null, otherwise it | |
1058 | * could be confused with a unit. | |
1059 | */ | |
9bc6218d | 1060 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
1061 | if ((type & 0xff00) == 0) { |
1062 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1063 | "interface %d INPUT_TERMINAL %d has invalid " | |
1064 | "type 0x%04x, skipping\n", udev->devnum, | |
1065 | alts->desc.bInterfaceNumber, | |
1066 | buffer[3], type); | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | n = 0; | |
1071 | p = 0; | |
1072 | len = 8; | |
1073 | ||
b482d923 | 1074 | if (type == UVC_ITT_CAMERA) { |
c0efd232 LP |
1075 | n = buflen >= 15 ? buffer[14] : 0; |
1076 | len = 15; | |
1077 | ||
b482d923 | 1078 | } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
c0efd232 LP |
1079 | n = buflen >= 9 ? buffer[8] : 0; |
1080 | p = buflen >= 10 + n ? buffer[9+n] : 0; | |
1081 | len = 10; | |
1082 | } | |
1083 | ||
1084 | if (buflen < len + n + p) { | |
1085 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1086 | "interface %d INPUT_TERMINAL error\n", | |
1087 | udev->devnum, alts->desc.bInterfaceNumber); | |
1088 | return -EINVAL; | |
1089 | } | |
1090 | ||
8ca5a639 LP |
1091 | term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], |
1092 | 1, n + p); | |
c0efd232 LP |
1093 | if (term == NULL) |
1094 | return -ENOMEM; | |
1095 | ||
b482d923 | 1096 | if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { |
c0efd232 LP |
1097 | term->camera.bControlSize = n; |
1098 | term->camera.bmControls = (__u8 *)term + sizeof *term; | |
1099 | term->camera.wObjectiveFocalLengthMin = | |
9bc6218d | 1100 | get_unaligned_le16(&buffer[8]); |
c0efd232 | 1101 | term->camera.wObjectiveFocalLengthMax = |
9bc6218d | 1102 | get_unaligned_le16(&buffer[10]); |
c0efd232 | 1103 | term->camera.wOcularFocalLength = |
9bc6218d | 1104 | get_unaligned_le16(&buffer[12]); |
c0efd232 | 1105 | memcpy(term->camera.bmControls, &buffer[15], n); |
b482d923 LP |
1106 | } else if (UVC_ENTITY_TYPE(term) == |
1107 | UVC_ITT_MEDIA_TRANSPORT_INPUT) { | |
c0efd232 LP |
1108 | term->media.bControlSize = n; |
1109 | term->media.bmControls = (__u8 *)term + sizeof *term; | |
1110 | term->media.bTransportModeSize = p; | |
1111 | term->media.bmTransportModes = (__u8 *)term | |
1112 | + sizeof *term + n; | |
1113 | memcpy(term->media.bmControls, &buffer[9], n); | |
1114 | memcpy(term->media.bmTransportModes, &buffer[10+n], p); | |
1115 | } | |
1116 | ||
1117 | if (buffer[7] != 0) | |
1118 | usb_string(udev, buffer[7], term->name, | |
1119 | sizeof term->name); | |
b482d923 | 1120 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) |
c0efd232 | 1121 | sprintf(term->name, "Camera %u", buffer[3]); |
b482d923 | 1122 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) |
c0efd232 LP |
1123 | sprintf(term->name, "Media %u", buffer[3]); |
1124 | else | |
1125 | sprintf(term->name, "Input %u", buffer[3]); | |
1126 | ||
1127 | list_add_tail(&term->list, &dev->entities); | |
1128 | break; | |
1129 | ||
b482d923 | 1130 | case UVC_VC_OUTPUT_TERMINAL: |
c0efd232 LP |
1131 | if (buflen < 9) { |
1132 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1133 | "interface %d OUTPUT_TERMINAL error\n", | |
1134 | udev->devnum, alts->desc.bInterfaceNumber); | |
1135 | return -EINVAL; | |
1136 | } | |
1137 | ||
1138 | /* Make sure the terminal type MSB is not null, otherwise it | |
1139 | * could be confused with a unit. | |
1140 | */ | |
9bc6218d | 1141 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
1142 | if ((type & 0xff00) == 0) { |
1143 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1144 | "interface %d OUTPUT_TERMINAL %d has invalid " | |
1145 | "type 0x%04x, skipping\n", udev->devnum, | |
1146 | alts->desc.bInterfaceNumber, buffer[3], type); | |
1147 | return 0; | |
1148 | } | |
1149 | ||
8ca5a639 LP |
1150 | term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], |
1151 | 1, 0); | |
c0efd232 LP |
1152 | if (term == NULL) |
1153 | return -ENOMEM; | |
1154 | ||
8ca5a639 | 1155 | memcpy(term->baSourceID, &buffer[7], 1); |
c0efd232 LP |
1156 | |
1157 | if (buffer[8] != 0) | |
1158 | usb_string(udev, buffer[8], term->name, | |
1159 | sizeof term->name); | |
1160 | else | |
1161 | sprintf(term->name, "Output %u", buffer[3]); | |
1162 | ||
1163 | list_add_tail(&term->list, &dev->entities); | |
1164 | break; | |
1165 | ||
b482d923 | 1166 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1167 | p = buflen >= 5 ? buffer[4] : 0; |
1168 | ||
1169 | if (buflen < 5 || buflen < 6 + p) { | |
1170 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1171 | "interface %d SELECTOR_UNIT error\n", | |
1172 | udev->devnum, alts->desc.bInterfaceNumber); | |
1173 | return -EINVAL; | |
1174 | } | |
1175 | ||
8ca5a639 | 1176 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); |
c0efd232 LP |
1177 | if (unit == NULL) |
1178 | return -ENOMEM; | |
1179 | ||
8ca5a639 | 1180 | memcpy(unit->baSourceID, &buffer[5], p); |
c0efd232 LP |
1181 | |
1182 | if (buffer[5+p] != 0) | |
1183 | usb_string(udev, buffer[5+p], unit->name, | |
1184 | sizeof unit->name); | |
1185 | else | |
1186 | sprintf(unit->name, "Selector %u", buffer[3]); | |
1187 | ||
1188 | list_add_tail(&unit->list, &dev->entities); | |
1189 | break; | |
1190 | ||
b482d923 | 1191 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1192 | n = buflen >= 8 ? buffer[7] : 0; |
1193 | p = dev->uvc_version >= 0x0110 ? 10 : 9; | |
1194 | ||
1195 | if (buflen < p + n) { | |
1196 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1197 | "interface %d PROCESSING_UNIT error\n", | |
1198 | udev->devnum, alts->desc.bInterfaceNumber); | |
1199 | return -EINVAL; | |
1200 | } | |
1201 | ||
8ca5a639 | 1202 | unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); |
c0efd232 LP |
1203 | if (unit == NULL) |
1204 | return -ENOMEM; | |
1205 | ||
8ca5a639 | 1206 | memcpy(unit->baSourceID, &buffer[4], 1); |
c0efd232 | 1207 | unit->processing.wMaxMultiplier = |
9bc6218d | 1208 | get_unaligned_le16(&buffer[5]); |
c0efd232 LP |
1209 | unit->processing.bControlSize = buffer[7]; |
1210 | unit->processing.bmControls = (__u8 *)unit + sizeof *unit; | |
1211 | memcpy(unit->processing.bmControls, &buffer[8], n); | |
1212 | if (dev->uvc_version >= 0x0110) | |
1213 | unit->processing.bmVideoStandards = buffer[9+n]; | |
1214 | ||
1215 | if (buffer[8+n] != 0) | |
1216 | usb_string(udev, buffer[8+n], unit->name, | |
1217 | sizeof unit->name); | |
1218 | else | |
1219 | sprintf(unit->name, "Processing %u", buffer[3]); | |
1220 | ||
1221 | list_add_tail(&unit->list, &dev->entities); | |
1222 | break; | |
1223 | ||
b482d923 | 1224 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1225 | p = buflen >= 22 ? buffer[21] : 0; |
1226 | n = buflen >= 24 + p ? buffer[22+p] : 0; | |
1227 | ||
1228 | if (buflen < 24 + p + n) { | |
1229 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1230 | "interface %d EXTENSION_UNIT error\n", | |
1231 | udev->devnum, alts->desc.bInterfaceNumber); | |
1232 | return -EINVAL; | |
1233 | } | |
1234 | ||
8ca5a639 | 1235 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); |
c0efd232 LP |
1236 | if (unit == NULL) |
1237 | return -ENOMEM; | |
1238 | ||
c0efd232 LP |
1239 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
1240 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 1241 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 1242 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 | 1243 | unit->extension.bmControls = (__u8 *)unit + sizeof *unit; |
c0efd232 LP |
1244 | memcpy(unit->extension.bmControls, &buffer[23+p], n); |
1245 | ||
1246 | if (buffer[23+p+n] != 0) | |
1247 | usb_string(udev, buffer[23+p+n], unit->name, | |
1248 | sizeof unit->name); | |
1249 | else | |
1250 | sprintf(unit->name, "Extension %u", buffer[3]); | |
1251 | ||
1252 | list_add_tail(&unit->list, &dev->entities); | |
1253 | break; | |
1254 | ||
1255 | default: | |
1256 | uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " | |
1257 | "descriptor (%u)\n", buffer[2]); | |
1258 | break; | |
1259 | } | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | static int uvc_parse_control(struct uvc_device *dev) | |
1265 | { | |
1266 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
1267 | unsigned char *buffer = alts->extra; | |
1268 | int buflen = alts->extralen; | |
1269 | int ret; | |
1270 | ||
1271 | /* Parse the default alternate setting only, as the UVC specification | |
1272 | * defines a single alternate setting, the default alternate setting | |
1273 | * zero. | |
1274 | */ | |
1275 | ||
1276 | while (buflen > 2) { | |
1277 | if (uvc_parse_vendor_control(dev, buffer, buflen) || | |
1278 | buffer[1] != USB_DT_CS_INTERFACE) | |
1279 | goto next_descriptor; | |
1280 | ||
1281 | if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) | |
1282 | return ret; | |
1283 | ||
1284 | next_descriptor: | |
1285 | buflen -= buffer[0]; | |
1286 | buffer += buffer[0]; | |
1287 | } | |
1288 | ||
538e7a00 LP |
1289 | /* Check if the optional status endpoint is present. Built-in iSight |
1290 | * webcams have an interrupt endpoint but spit proprietary data that | |
1291 | * don't conform to the UVC status endpoint messages. Don't try to | |
1292 | * handle the interrupt endpoint for those cameras. | |
1293 | */ | |
1294 | if (alts->desc.bNumEndpoints == 1 && | |
1295 | !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { | |
c0efd232 LP |
1296 | struct usb_host_endpoint *ep = &alts->endpoint[0]; |
1297 | struct usb_endpoint_descriptor *desc = &ep->desc; | |
1298 | ||
1299 | if (usb_endpoint_is_int_in(desc) && | |
1300 | le16_to_cpu(desc->wMaxPacketSize) >= 8 && | |
1301 | desc->bInterval != 0) { | |
1302 | uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " | |
1303 | "(addr %02x).\n", desc->bEndpointAddress); | |
1304 | dev->int_ep = ep; | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | /* ------------------------------------------------------------------------ | |
8e113595 | 1312 | * UVC device scan |
c0efd232 LP |
1313 | */ |
1314 | ||
c0efd232 LP |
1315 | /* |
1316 | * Scan the UVC descriptors to locate a chain starting at an Output Terminal | |
1317 | * and containing the following units: | |
1318 | * | |
8e113595 | 1319 | * - one or more Output Terminals (USB Streaming or Display) |
c0efd232 | 1320 | * - zero or one Processing Unit |
8e113595 | 1321 | * - zero, one or more single-input Selector Units |
c0efd232 LP |
1322 | * - zero or one multiple-input Selector Units, provided all inputs are |
1323 | * connected to input terminals | |
1324 | * - zero, one or mode single-input Extension Units | |
2c2d264b | 1325 | * - one or more Input Terminals (Camera, External or USB Streaming) |
c0efd232 | 1326 | * |
8e113595 LP |
1327 | * The terminal and units must match on of the following structures: |
1328 | * | |
1329 | * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) | |
1330 | * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... | |
1331 | * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) | |
1332 | * | |
1333 | * +---------+ +---------+ -> OTT_*(0) | |
1334 | * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... | |
1335 | * +---------+ +---------+ -> OTT_*(n) | |
1336 | * | |
1337 | * The Processing Unit and Extension Units can be in any order. Additional | |
1338 | * Extension Units connected to the main chain as single-unit branches are | |
1339 | * also supported. Single-input Selector Units are ignored. | |
c0efd232 | 1340 | */ |
8e113595 | 1341 | static int uvc_scan_chain_entity(struct uvc_video_chain *chain, |
c0efd232 LP |
1342 | struct uvc_entity *entity) |
1343 | { | |
1344 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1345 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 | 1346 | if (uvc_trace_param & UVC_TRACE_PROBE) |
69396c4e | 1347 | printk(KERN_CONT " <- XU %d", entity->id); |
c0efd232 | 1348 | |
8ca5a639 | 1349 | if (entity->bNrInPins != 1) { |
c0efd232 LP |
1350 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " |
1351 | "than 1 input pin.\n", entity->id); | |
1352 | return -1; | |
1353 | } | |
1354 | ||
c0efd232 LP |
1355 | break; |
1356 | ||
b482d923 | 1357 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 | 1358 | if (uvc_trace_param & UVC_TRACE_PROBE) |
69396c4e | 1359 | printk(KERN_CONT " <- PU %d", entity->id); |
c0efd232 | 1360 | |
8e113595 | 1361 | if (chain->processing != NULL) { |
c0efd232 LP |
1362 | uvc_trace(UVC_TRACE_DESCR, "Found multiple " |
1363 | "Processing Units in chain.\n"); | |
1364 | return -1; | |
1365 | } | |
1366 | ||
8e113595 | 1367 | chain->processing = entity; |
c0efd232 LP |
1368 | break; |
1369 | ||
b482d923 | 1370 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 | 1371 | if (uvc_trace_param & UVC_TRACE_PROBE) |
69396c4e | 1372 | printk(KERN_CONT " <- SU %d", entity->id); |
c0efd232 LP |
1373 | |
1374 | /* Single-input selector units are ignored. */ | |
8ca5a639 | 1375 | if (entity->bNrInPins == 1) |
c0efd232 LP |
1376 | break; |
1377 | ||
8e113595 | 1378 | if (chain->selector != NULL) { |
c0efd232 LP |
1379 | uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " |
1380 | "Units in chain.\n"); | |
1381 | return -1; | |
1382 | } | |
1383 | ||
8e113595 | 1384 | chain->selector = entity; |
c0efd232 LP |
1385 | break; |
1386 | ||
b482d923 LP |
1387 | case UVC_ITT_VENDOR_SPECIFIC: |
1388 | case UVC_ITT_CAMERA: | |
1389 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
c0efd232 | 1390 | if (uvc_trace_param & UVC_TRACE_PROBE) |
69396c4e | 1391 | printk(KERN_CONT " <- IT %d\n", entity->id); |
c0efd232 | 1392 | |
c0efd232 LP |
1393 | break; |
1394 | ||
4093a5c4 LP |
1395 | case UVC_OTT_VENDOR_SPECIFIC: |
1396 | case UVC_OTT_DISPLAY: | |
1397 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1398 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
69396c4e | 1399 | printk(KERN_CONT " OT %d", entity->id); |
4093a5c4 LP |
1400 | |
1401 | break; | |
1402 | ||
b482d923 | 1403 | case UVC_TT_STREAMING: |
4057ac6c LP |
1404 | if (UVC_ENTITY_IS_ITERM(entity)) { |
1405 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
69396c4e | 1406 | printk(KERN_CONT " <- IT %d\n", entity->id); |
4057ac6c LP |
1407 | } else { |
1408 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
69396c4e | 1409 | printk(KERN_CONT " OT %d", entity->id); |
ff924203 LP |
1410 | } |
1411 | ||
ff924203 LP |
1412 | break; |
1413 | ||
c0efd232 LP |
1414 | default: |
1415 | uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " | |
1416 | "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); | |
1417 | return -1; | |
1418 | } | |
1419 | ||
6241d8ca | 1420 | list_add_tail(&entity->chain, &chain->entities); |
c0efd232 LP |
1421 | return 0; |
1422 | } | |
1423 | ||
8e113595 | 1424 | static int uvc_scan_chain_forward(struct uvc_video_chain *chain, |
c0efd232 LP |
1425 | struct uvc_entity *entity, struct uvc_entity *prev) |
1426 | { | |
1427 | struct uvc_entity *forward; | |
1428 | int found; | |
1429 | ||
1430 | /* Forward scan */ | |
1431 | forward = NULL; | |
1432 | found = 0; | |
1433 | ||
1434 | while (1) { | |
8e113595 | 1435 | forward = uvc_entity_by_reference(chain->dev, entity->id, |
c0efd232 LP |
1436 | forward); |
1437 | if (forward == NULL) | |
1438 | break; | |
8e113595 | 1439 | if (forward == prev) |
c0efd232 LP |
1440 | continue; |
1441 | ||
8e113595 LP |
1442 | switch (UVC_ENTITY_TYPE(forward)) { |
1443 | case UVC_VC_EXTENSION_UNIT: | |
8ca5a639 | 1444 | if (forward->bNrInPins != 1) { |
8e113595 LP |
1445 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " |
1446 | "has more than 1 input pin.\n", | |
1447 | entity->id); | |
1448 | return -EINVAL; | |
1449 | } | |
c0efd232 | 1450 | |
6241d8ca | 1451 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1452 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1453 | if (!found) | |
69396c4e | 1454 | printk(KERN_CONT " (->"); |
8e113595 | 1455 | |
69396c4e | 1456 | printk(KERN_CONT " XU %d", forward->id); |
8e113595 LP |
1457 | found = 1; |
1458 | } | |
1459 | break; | |
1460 | ||
1461 | case UVC_OTT_VENDOR_SPECIFIC: | |
1462 | case UVC_OTT_DISPLAY: | |
1463 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1464 | case UVC_TT_STREAMING: | |
1465 | if (UVC_ENTITY_IS_ITERM(forward)) { | |
1466 | uvc_trace(UVC_TRACE_DESCR, "Unsupported input " | |
1467 | "terminal %u.\n", forward->id); | |
1468 | return -EINVAL; | |
1469 | } | |
c0efd232 | 1470 | |
6241d8ca | 1471 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1472 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1473 | if (!found) | |
69396c4e | 1474 | printk(KERN_CONT " (->"); |
8e113595 | 1475 | |
69396c4e | 1476 | printk(KERN_CONT " OT %d", forward->id); |
8e113595 LP |
1477 | found = 1; |
1478 | } | |
1479 | break; | |
c0efd232 LP |
1480 | } |
1481 | } | |
1482 | if (found) | |
69396c4e | 1483 | printk(KERN_CONT ")"); |
c0efd232 LP |
1484 | |
1485 | return 0; | |
1486 | } | |
1487 | ||
8e113595 | 1488 | static int uvc_scan_chain_backward(struct uvc_video_chain *chain, |
4057ac6c | 1489 | struct uvc_entity **_entity) |
c0efd232 | 1490 | { |
4057ac6c | 1491 | struct uvc_entity *entity = *_entity; |
c0efd232 | 1492 | struct uvc_entity *term; |
4057ac6c | 1493 | int id = -EINVAL, i; |
c0efd232 LP |
1494 | |
1495 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1496 | case UVC_VC_EXTENSION_UNIT: |
b482d923 | 1497 | case UVC_VC_PROCESSING_UNIT: |
8ca5a639 | 1498 | id = entity->baSourceID[0]; |
c0efd232 LP |
1499 | break; |
1500 | ||
b482d923 | 1501 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 | 1502 | /* Single-input selector units are ignored. */ |
8ca5a639 LP |
1503 | if (entity->bNrInPins == 1) { |
1504 | id = entity->baSourceID[0]; | |
c0efd232 LP |
1505 | break; |
1506 | } | |
1507 | ||
1508 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
69396c4e | 1509 | printk(KERN_CONT " <- IT"); |
c0efd232 | 1510 | |
8e113595 | 1511 | chain->selector = entity; |
8ca5a639 LP |
1512 | for (i = 0; i < entity->bNrInPins; ++i) { |
1513 | id = entity->baSourceID[i]; | |
8e113595 | 1514 | term = uvc_entity_by_id(chain->dev, id); |
c0efd232 LP |
1515 | if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { |
1516 | uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " | |
1517 | "input %d isn't connected to an " | |
1518 | "input terminal\n", entity->id, i); | |
1519 | return -1; | |
1520 | } | |
1521 | ||
1522 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
69396c4e | 1523 | printk(KERN_CONT " %d", term->id); |
c0efd232 | 1524 | |
6241d8ca | 1525 | list_add_tail(&term->chain, &chain->entities); |
8e113595 | 1526 | uvc_scan_chain_forward(chain, term, entity); |
c0efd232 LP |
1527 | } |
1528 | ||
1529 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
69396c4e | 1530 | printk(KERN_CONT "\n"); |
c0efd232 LP |
1531 | |
1532 | id = 0; | |
1533 | break; | |
4057ac6c LP |
1534 | |
1535 | case UVC_ITT_VENDOR_SPECIFIC: | |
1536 | case UVC_ITT_CAMERA: | |
1537 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
1538 | case UVC_OTT_VENDOR_SPECIFIC: | |
1539 | case UVC_OTT_DISPLAY: | |
1540 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1541 | case UVC_TT_STREAMING: | |
8ca5a639 | 1542 | id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; |
4057ac6c | 1543 | break; |
c0efd232 LP |
1544 | } |
1545 | ||
4057ac6c LP |
1546 | if (id <= 0) { |
1547 | *_entity = NULL; | |
1548 | return id; | |
1549 | } | |
1550 | ||
1551 | entity = uvc_entity_by_id(chain->dev, id); | |
1552 | if (entity == NULL) { | |
1553 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
1554 | "unknown entity %d.\n", id); | |
1555 | return -EINVAL; | |
1556 | } | |
1557 | ||
1558 | *_entity = entity; | |
1559 | return 0; | |
c0efd232 LP |
1560 | } |
1561 | ||
8e113595 | 1562 | static int uvc_scan_chain(struct uvc_video_chain *chain, |
4057ac6c | 1563 | struct uvc_entity *term) |
c0efd232 LP |
1564 | { |
1565 | struct uvc_entity *entity, *prev; | |
c0efd232 | 1566 | |
4057ac6c | 1567 | uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); |
ff924203 | 1568 | |
4057ac6c LP |
1569 | entity = term; |
1570 | prev = NULL; | |
8e113595 | 1571 | |
4057ac6c LP |
1572 | while (entity != NULL) { |
1573 | /* Entity must not be part of an existing chain */ | |
8e113595 LP |
1574 | if (entity->chain.next || entity->chain.prev) { |
1575 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
4057ac6c | 1576 | "entity %d already in chain.\n", entity->id); |
8e113595 | 1577 | return -EINVAL; |
c0efd232 LP |
1578 | } |
1579 | ||
1580 | /* Process entity */ | |
8e113595 LP |
1581 | if (uvc_scan_chain_entity(chain, entity) < 0) |
1582 | return -EINVAL; | |
c0efd232 LP |
1583 | |
1584 | /* Forward scan */ | |
8e113595 LP |
1585 | if (uvc_scan_chain_forward(chain, entity, prev) < 0) |
1586 | return -EINVAL; | |
c0efd232 | 1587 | |
c0efd232 | 1588 | /* Backward scan */ |
4057ac6c LP |
1589 | prev = entity; |
1590 | if (uvc_scan_chain_backward(chain, &entity) < 0) | |
1591 | return -EINVAL; | |
c0efd232 LP |
1592 | } |
1593 | ||
8e113595 LP |
1594 | return 0; |
1595 | } | |
1596 | ||
6241d8ca LP |
1597 | static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, |
1598 | char *buffer) | |
8e113595 LP |
1599 | { |
1600 | struct uvc_entity *term; | |
1601 | unsigned int nterms = 0; | |
1602 | char *p = buffer; | |
1603 | ||
1604 | list_for_each_entry(term, terms, chain) { | |
6241d8ca LP |
1605 | if (!UVC_ENTITY_IS_TERM(term) || |
1606 | UVC_TERM_DIRECTION(term) != dir) | |
1607 | continue; | |
1608 | ||
1609 | if (nterms) | |
8e113595 | 1610 | p += sprintf(p, ","); |
6241d8ca LP |
1611 | if (++nterms >= 4) { |
1612 | p += sprintf(p, "..."); | |
1613 | break; | |
8e113595 | 1614 | } |
6241d8ca | 1615 | p += sprintf(p, "%u", term->id); |
ff924203 | 1616 | } |
c0efd232 | 1617 | |
8e113595 LP |
1618 | return p - buffer; |
1619 | } | |
1620 | ||
1621 | static const char *uvc_print_chain(struct uvc_video_chain *chain) | |
1622 | { | |
1623 | static char buffer[43]; | |
1624 | char *p = buffer; | |
1625 | ||
6241d8ca | 1626 | p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); |
8e113595 | 1627 | p += sprintf(p, " -> "); |
6241d8ca | 1628 | uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); |
8e113595 LP |
1629 | |
1630 | return buffer; | |
c0efd232 LP |
1631 | } |
1632 | ||
e950267a HI |
1633 | static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) |
1634 | { | |
1635 | struct uvc_video_chain *chain; | |
1636 | ||
1637 | chain = kzalloc(sizeof(*chain), GFP_KERNEL); | |
1638 | if (chain == NULL) | |
1639 | return NULL; | |
1640 | ||
1641 | INIT_LIST_HEAD(&chain->entities); | |
1642 | mutex_init(&chain->ctrl_mutex); | |
1643 | chain->dev = dev; | |
1644 | v4l2_prio_init(&chain->prio); | |
1645 | ||
1646 | return chain; | |
1647 | } | |
1648 | ||
1649 | /* | |
1650 | * Fallback heuristic for devices that don't connect units and terminals in a | |
1651 | * valid chain. | |
1652 | * | |
1653 | * Some devices have invalid baSourceID references, causing uvc_scan_chain() | |
1654 | * to fail, but if we just take the entities we can find and put them together | |
1655 | * in the most sensible chain we can think of, turns out they do work anyway. | |
1656 | * Note: This heuristic assumes there is a single chain. | |
1657 | * | |
1658 | * At the time of writing, devices known to have such a broken chain are | |
1659 | * - Acer Integrated Camera (5986:055a) | |
1660 | * - Realtek rtl157a7 (0bda:57a7) | |
1661 | */ | |
1662 | static int uvc_scan_fallback(struct uvc_device *dev) | |
1663 | { | |
1664 | struct uvc_video_chain *chain; | |
1665 | struct uvc_entity *iterm = NULL; | |
1666 | struct uvc_entity *oterm = NULL; | |
1667 | struct uvc_entity *entity; | |
1668 | struct uvc_entity *prev; | |
1669 | ||
1670 | /* | |
1671 | * Start by locating the input and output terminals. We only support | |
1672 | * devices with exactly one of each for now. | |
1673 | */ | |
1674 | list_for_each_entry(entity, &dev->entities, list) { | |
1675 | if (UVC_ENTITY_IS_ITERM(entity)) { | |
1676 | if (iterm) | |
1677 | return -EINVAL; | |
1678 | iterm = entity; | |
1679 | } | |
1680 | ||
1681 | if (UVC_ENTITY_IS_OTERM(entity)) { | |
1682 | if (oterm) | |
1683 | return -EINVAL; | |
1684 | oterm = entity; | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | if (iterm == NULL || oterm == NULL) | |
1689 | return -EINVAL; | |
1690 | ||
1691 | /* Allocate the chain and fill it. */ | |
1692 | chain = uvc_alloc_chain(dev); | |
1693 | if (chain == NULL) | |
1694 | return -ENOMEM; | |
1695 | ||
1696 | if (uvc_scan_chain_entity(chain, oterm) < 0) | |
1697 | goto error; | |
1698 | ||
1699 | prev = oterm; | |
1700 | ||
1701 | /* | |
1702 | * Add all Processing and Extension Units with two pads. The order | |
1703 | * doesn't matter much, use reverse list traversal to connect units in | |
1704 | * UVC descriptor order as we build the chain from output to input. This | |
1705 | * leads to units appearing in the order meant by the manufacturer for | |
1706 | * the cameras known to require this heuristic. | |
1707 | */ | |
1708 | list_for_each_entry_reverse(entity, &dev->entities, list) { | |
1709 | if (entity->type != UVC_VC_PROCESSING_UNIT && | |
1710 | entity->type != UVC_VC_EXTENSION_UNIT) | |
1711 | continue; | |
1712 | ||
1713 | if (entity->num_pads != 2) | |
1714 | continue; | |
1715 | ||
1716 | if (uvc_scan_chain_entity(chain, entity) < 0) | |
1717 | goto error; | |
1718 | ||
1719 | prev->baSourceID[0] = entity->id; | |
1720 | prev = entity; | |
1721 | } | |
1722 | ||
1723 | if (uvc_scan_chain_entity(chain, iterm) < 0) | |
1724 | goto error; | |
1725 | ||
1726 | prev->baSourceID[0] = iterm->id; | |
1727 | ||
1728 | list_add_tail(&chain->list, &dev->chains); | |
1729 | ||
1730 | uvc_trace(UVC_TRACE_PROBE, | |
1731 | "Found a video chain by fallback heuristic (%s).\n", | |
1732 | uvc_print_chain(chain)); | |
1733 | ||
1734 | return 0; | |
1735 | ||
1736 | error: | |
1737 | kfree(chain); | |
1738 | return -EINVAL; | |
1739 | } | |
1740 | ||
c0efd232 | 1741 | /* |
35f02a68 | 1742 | * Scan the device for video chains and register video devices. |
c0efd232 | 1743 | * |
8e113595 | 1744 | * Chains are scanned starting at their output terminals and walked backwards. |
c0efd232 | 1745 | */ |
35f02a68 | 1746 | static int uvc_scan_device(struct uvc_device *dev) |
c0efd232 | 1747 | { |
8e113595 | 1748 | struct uvc_video_chain *chain; |
c0efd232 | 1749 | struct uvc_entity *term; |
c0efd232 | 1750 | |
c0efd232 | 1751 | list_for_each_entry(term, &dev->entities, list) { |
8e113595 | 1752 | if (!UVC_ENTITY_IS_OTERM(term)) |
c0efd232 LP |
1753 | continue; |
1754 | ||
8e113595 LP |
1755 | /* If the terminal is already included in a chain, skip it. |
1756 | * This can happen for chains that have multiple output | |
1757 | * terminals, where all output terminals beside the first one | |
1758 | * will be inserted in the chain in forward scans. | |
1759 | */ | |
1760 | if (term->chain.next || term->chain.prev) | |
c0efd232 LP |
1761 | continue; |
1762 | ||
e950267a | 1763 | chain = uvc_alloc_chain(dev); |
8e113595 LP |
1764 | if (chain == NULL) |
1765 | return -ENOMEM; | |
1766 | ||
8be8ec6e LP |
1767 | term->flags |= UVC_ENTITY_FLAG_DEFAULT; |
1768 | ||
8e113595 LP |
1769 | if (uvc_scan_chain(chain, term) < 0) { |
1770 | kfree(chain); | |
1771 | continue; | |
c0efd232 | 1772 | } |
8e113595 LP |
1773 | |
1774 | uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", | |
1775 | uvc_print_chain(chain)); | |
1776 | ||
1777 | list_add_tail(&chain->list, &dev->chains); | |
c0efd232 LP |
1778 | } |
1779 | ||
e950267a HI |
1780 | if (list_empty(&dev->chains)) |
1781 | uvc_scan_fallback(dev); | |
1782 | ||
8e113595 | 1783 | if (list_empty(&dev->chains)) { |
c0efd232 LP |
1784 | uvc_printk(KERN_INFO, "No valid video chain found.\n"); |
1785 | return -1; | |
1786 | } | |
1787 | ||
c0efd232 LP |
1788 | return 0; |
1789 | } | |
1790 | ||
8e113595 LP |
1791 | /* ------------------------------------------------------------------------ |
1792 | * Video device registration and unregistration | |
1793 | */ | |
1794 | ||
716fdee1 LP |
1795 | /* |
1796 | * Delete the UVC device. | |
1797 | * | |
1798 | * Called by the kernel when the last reference to the uvc_device structure | |
1799 | * is released. | |
1800 | * | |
1801 | * As this function is called after or during disconnect(), all URBs have | |
1802 | * already been canceled by the USB core. There is no need to kill the | |
1803 | * interrupt URB manually. | |
1804 | */ | |
9d15cd95 | 1805 | static void uvc_delete(struct kref *kref) |
716fdee1 | 1806 | { |
9d15cd95 | 1807 | struct uvc_device *dev = container_of(kref, struct uvc_device, ref); |
716fdee1 LP |
1808 | struct list_head *p, *n; |
1809 | ||
716fdee1 LP |
1810 | uvc_status_cleanup(dev); |
1811 | uvc_ctrl_cleanup_device(dev); | |
1812 | ||
2228d80d TI |
1813 | usb_put_intf(dev->intf); |
1814 | usb_put_dev(dev->udev); | |
1815 | ||
5a254d75 LP |
1816 | if (dev->vdev.dev) |
1817 | v4l2_device_unregister(&dev->vdev); | |
1818 | #ifdef CONFIG_MEDIA_CONTROLLER | |
a087ce70 | 1819 | if (media_devnode_is_registered(dev->mdev.devnode)) |
5a254d75 | 1820 | media_device_unregister(&dev->mdev); |
9832e155 | 1821 | media_device_cleanup(&dev->mdev); |
5a254d75 LP |
1822 | #endif |
1823 | ||
716fdee1 LP |
1824 | list_for_each_safe(p, n, &dev->chains) { |
1825 | struct uvc_video_chain *chain; | |
1826 | chain = list_entry(p, struct uvc_video_chain, list); | |
1827 | kfree(chain); | |
1828 | } | |
1829 | ||
1830 | list_for_each_safe(p, n, &dev->entities) { | |
1831 | struct uvc_entity *entity; | |
1832 | entity = list_entry(p, struct uvc_entity, list); | |
4ffc2d89 LP |
1833 | #ifdef CONFIG_MEDIA_CONTROLLER |
1834 | uvc_mc_cleanup_entity(entity); | |
1835 | #endif | |
716fdee1 LP |
1836 | kfree(entity); |
1837 | } | |
1838 | ||
1839 | list_for_each_safe(p, n, &dev->streams) { | |
1840 | struct uvc_streaming *streaming; | |
1841 | streaming = list_entry(p, struct uvc_streaming, list); | |
1842 | usb_driver_release_interface(&uvc_driver.driver, | |
1843 | streaming->intf); | |
1844 | usb_put_intf(streaming->intf); | |
1845 | kfree(streaming->format); | |
1846 | kfree(streaming->header.bmaControls); | |
1847 | kfree(streaming); | |
1848 | } | |
1849 | ||
1850 | kfree(dev); | |
1851 | } | |
1852 | ||
1853 | static void uvc_release(struct video_device *vdev) | |
1854 | { | |
1855 | struct uvc_streaming *stream = video_get_drvdata(vdev); | |
1856 | struct uvc_device *dev = stream->dev; | |
1857 | ||
9d15cd95 | 1858 | kref_put(&dev->ref, uvc_delete); |
716fdee1 LP |
1859 | } |
1860 | ||
8e113595 LP |
1861 | /* |
1862 | * Unregister the video devices. | |
1863 | */ | |
1864 | static void uvc_unregister_video(struct uvc_device *dev) | |
1865 | { | |
1866 | struct uvc_streaming *stream; | |
1867 | ||
716fdee1 LP |
1868 | /* Unregistering all video devices might result in uvc_delete() being |
1869 | * called from inside the loop if there's no open file handle. To avoid | |
9d15cd95 GL |
1870 | * that, increment the refcount before iterating over the streams and |
1871 | * decrement it when done. | |
716fdee1 | 1872 | */ |
9d15cd95 | 1873 | kref_get(&dev->ref); |
716fdee1 | 1874 | |
8e113595 | 1875 | list_for_each_entry(stream, &dev->streams, list) { |
d8da7513 | 1876 | if (!video_is_registered(&stream->vdev)) |
8e113595 LP |
1877 | continue; |
1878 | ||
d8da7513 | 1879 | video_unregister_device(&stream->vdev); |
edbaa398 AF |
1880 | |
1881 | uvc_debugfs_cleanup_stream(stream); | |
8e113595 | 1882 | } |
716fdee1 | 1883 | |
9d15cd95 | 1884 | kref_put(&dev->ref, uvc_delete); |
8e113595 LP |
1885 | } |
1886 | ||
1887 | static int uvc_register_video(struct uvc_device *dev, | |
1888 | struct uvc_streaming *stream) | |
1889 | { | |
d8da7513 | 1890 | struct video_device *vdev = &stream->vdev; |
8e113595 LP |
1891 | int ret; |
1892 | ||
b83bba24 LP |
1893 | /* Initialize the video buffers queue. */ |
1894 | ret = uvc_queue_init(&stream->queue, stream->type, !uvc_no_drop_param); | |
1895 | if (ret) | |
1896 | return ret; | |
1897 | ||
8e113595 LP |
1898 | /* Initialize the streaming interface with default streaming |
1899 | * parameters. | |
1900 | */ | |
1901 | ret = uvc_video_init(stream); | |
1902 | if (ret < 0) { | |
1903 | uvc_printk(KERN_ERR, "Failed to initialize the device " | |
1904 | "(%d).\n", ret); | |
1905 | return ret; | |
1906 | } | |
1907 | ||
edbaa398 AF |
1908 | uvc_debugfs_init_stream(stream); |
1909 | ||
8e113595 | 1910 | /* Register the device with V4L. */ |
8e113595 LP |
1911 | |
1912 | /* We already hold a reference to dev->udev. The video device will be | |
1913 | * unregistered before the reference is released, so we don't need to | |
1914 | * get another one. | |
1915 | */ | |
5a254d75 | 1916 | vdev->v4l2_dev = &dev->vdev; |
8e113595 | 1917 | vdev->fops = &uvc_fops; |
d5e90b7a | 1918 | vdev->ioctl_ops = &uvc_ioctl_ops; |
716fdee1 | 1919 | vdev->release = uvc_release; |
0550513c | 1920 | vdev->prio = &stream->chain->prio; |
954f340f HV |
1921 | if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
1922 | vdev->vfl_dir = VFL_DIR_TX; | |
8e113595 LP |
1923 | strlcpy(vdev->name, dev->name, sizeof vdev->name); |
1924 | ||
1925 | /* Set the driver data before calling video_register_device, otherwise | |
1926 | * uvc_v4l2_open might race us. | |
1927 | */ | |
8e113595 LP |
1928 | video_set_drvdata(vdev, stream); |
1929 | ||
1930 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1931 | if (ret < 0) { | |
1932 | uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", | |
1933 | ret); | |
8e113595 LP |
1934 | return ret; |
1935 | } | |
1936 | ||
f887e99a LP |
1937 | if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1938 | stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE; | |
1939 | else | |
1940 | stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; | |
1941 | ||
9d15cd95 | 1942 | kref_get(&dev->ref); |
8e113595 LP |
1943 | return 0; |
1944 | } | |
1945 | ||
1946 | /* | |
1947 | * Register all video devices in all chains. | |
1948 | */ | |
1949 | static int uvc_register_terms(struct uvc_device *dev, | |
6241d8ca | 1950 | struct uvc_video_chain *chain) |
8e113595 LP |
1951 | { |
1952 | struct uvc_streaming *stream; | |
1953 | struct uvc_entity *term; | |
1954 | int ret; | |
1955 | ||
6241d8ca | 1956 | list_for_each_entry(term, &chain->entities, chain) { |
8e113595 LP |
1957 | if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) |
1958 | continue; | |
1959 | ||
1960 | stream = uvc_stream_by_id(dev, term->id); | |
1961 | if (stream == NULL) { | |
1962 | uvc_printk(KERN_INFO, "No streaming interface found " | |
1963 | "for terminal %u.", term->id); | |
1964 | continue; | |
1965 | } | |
1966 | ||
1967 | stream->chain = chain; | |
1968 | ret = uvc_register_video(dev, stream); | |
1969 | if (ret < 0) | |
1970 | return ret; | |
8a65a948 | 1971 | |
d8da7513 | 1972 | term->vdev = &stream->vdev; |
8e113595 LP |
1973 | } |
1974 | ||
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | static int uvc_register_chains(struct uvc_device *dev) | |
1979 | { | |
1980 | struct uvc_video_chain *chain; | |
1981 | int ret; | |
1982 | ||
1983 | list_for_each_entry(chain, &dev->chains, list) { | |
6241d8ca | 1984 | ret = uvc_register_terms(dev, chain); |
8e113595 LP |
1985 | if (ret < 0) |
1986 | return ret; | |
4ffc2d89 LP |
1987 | |
1988 | #ifdef CONFIG_MEDIA_CONTROLLER | |
1989 | ret = uvc_mc_register_entities(chain); | |
1990 | if (ret < 0) { | |
1991 | uvc_printk(KERN_INFO, "Failed to register entites " | |
1992 | "(%d).\n", ret); | |
1993 | } | |
1994 | #endif | |
8e113595 LP |
1995 | } |
1996 | ||
1997 | return 0; | |
1998 | } | |
1999 | ||
2000 | /* ------------------------------------------------------------------------ | |
2001 | * USB probe, disconnect, suspend and resume | |
2002 | */ | |
2003 | ||
c0efd232 LP |
2004 | static int uvc_probe(struct usb_interface *intf, |
2005 | const struct usb_device_id *id) | |
2006 | { | |
2007 | struct usb_device *udev = interface_to_usbdev(intf); | |
2008 | struct uvc_device *dev; | |
e7b09f18 | 2009 | int function; |
c0efd232 LP |
2010 | int ret; |
2011 | ||
2012 | if (id->idVendor && id->idProduct) | |
2013 | uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " | |
2014 | "(%04x:%04x)\n", udev->devpath, id->idVendor, | |
2015 | id->idProduct); | |
2016 | else | |
2017 | uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", | |
2018 | udev->devpath); | |
2019 | ||
2c2d264b | 2020 | /* Allocate memory for the device and initialize it. */ |
c0efd232 LP |
2021 | if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) |
2022 | return -ENOMEM; | |
2023 | ||
2024 | INIT_LIST_HEAD(&dev->entities); | |
8e113595 | 2025 | INIT_LIST_HEAD(&dev->chains); |
35f02a68 | 2026 | INIT_LIST_HEAD(&dev->streams); |
9d15cd95 | 2027 | kref_init(&dev->ref); |
8fb91b33 | 2028 | atomic_set(&dev->nmappings, 0); |
17706f56 | 2029 | mutex_init(&dev->lock); |
c0efd232 LP |
2030 | |
2031 | dev->udev = usb_get_dev(udev); | |
2032 | dev->intf = usb_get_intf(intf); | |
2033 | dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
73de3592 LP |
2034 | dev->quirks = (uvc_quirks_param == -1) |
2035 | ? id->driver_info : uvc_quirks_param; | |
c0efd232 LP |
2036 | |
2037 | if (udev->product != NULL) | |
d0ebf307 | 2038 | strlcpy(dev->name, udev->product, sizeof dev->name); |
c0efd232 LP |
2039 | else |
2040 | snprintf(dev->name, sizeof dev->name, | |
e7b09f18 PB |
2041 | "UVC Camera (%04x:%04x)", |
2042 | le16_to_cpu(udev->descriptor.idVendor), | |
2043 | le16_to_cpu(udev->descriptor.idProduct)); | |
2044 | ||
2045 | /* | |
2046 | * Add iFunction or iInterface to names when available as additional | |
2047 | * distinguishers between interfaces. iFunction is prioritized over | |
2048 | * iInterface which matches Windows behavior at the point of writing. | |
2049 | */ | |
2050 | if (intf->intf_assoc && intf->intf_assoc->iFunction != 0) | |
2051 | function = intf->intf_assoc->iFunction; | |
2052 | else | |
2053 | function = intf->cur_altsetting->desc.iInterface; | |
2054 | if (function != 0) { | |
2055 | size_t len; | |
2056 | ||
2057 | strlcat(dev->name, ": ", sizeof(dev->name)); | |
2058 | len = strlen(dev->name); | |
2059 | usb_string(udev, function, dev->name + len, | |
2060 | sizeof(dev->name) - len); | |
2061 | } | |
c0efd232 | 2062 | |
2c2d264b | 2063 | /* Parse the Video Class control descriptor. */ |
c0efd232 LP |
2064 | if (uvc_parse_control(dev) < 0) { |
2065 | uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " | |
2066 | "descriptors.\n"); | |
2067 | goto error; | |
2068 | } | |
2069 | ||
fba4578e | 2070 | uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", |
c0efd232 LP |
2071 | dev->uvc_version >> 8, dev->uvc_version & 0xff, |
2072 | udev->product ? udev->product : "<unnamed>", | |
2073 | le16_to_cpu(udev->descriptor.idVendor), | |
2074 | le16_to_cpu(udev->descriptor.idProduct)); | |
2075 | ||
73de3592 LP |
2076 | if (dev->quirks != id->driver_info) { |
2077 | uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " | |
2078 | "parameter for testing purpose.\n", dev->quirks); | |
c0efd232 LP |
2079 | uvc_printk(KERN_INFO, "Please report required quirks to the " |
2080 | "linux-uvc-devel mailing list.\n"); | |
2081 | } | |
2082 | ||
9832e155 | 2083 | /* Initialize the media device and register the V4L2 device. */ |
5a254d75 LP |
2084 | #ifdef CONFIG_MEDIA_CONTROLLER |
2085 | dev->mdev.dev = &intf->dev; | |
2086 | strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); | |
2087 | if (udev->serial) | |
2088 | strlcpy(dev->mdev.serial, udev->serial, | |
2089 | sizeof(dev->mdev.serial)); | |
2090 | strcpy(dev->mdev.bus_info, udev->devpath); | |
2091 | dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); | |
9832e155 | 2092 | media_device_init(&dev->mdev); |
5a254d75 LP |
2093 | |
2094 | dev->vdev.mdev = &dev->mdev; | |
2095 | #endif | |
2096 | if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) | |
2097 | goto error; | |
2098 | ||
2c2d264b | 2099 | /* Initialize controls. */ |
c0efd232 LP |
2100 | if (uvc_ctrl_init_device(dev) < 0) |
2101 | goto error; | |
2102 | ||
8e113595 | 2103 | /* Scan the device for video chains. */ |
35f02a68 | 2104 | if (uvc_scan_device(dev) < 0) |
c0efd232 LP |
2105 | goto error; |
2106 | ||
5a254d75 | 2107 | /* Register video device nodes. */ |
8e113595 LP |
2108 | if (uvc_register_chains(dev) < 0) |
2109 | goto error; | |
2110 | ||
9832e155 JMC |
2111 | #ifdef CONFIG_MEDIA_CONTROLLER |
2112 | /* Register the media device node */ | |
2113 | if (media_device_register(&dev->mdev) < 0) | |
2114 | goto error; | |
2115 | #endif | |
2c2d264b | 2116 | /* Save our data pointer in the interface data. */ |
c0efd232 LP |
2117 | usb_set_intfdata(intf, dev); |
2118 | ||
2c2d264b | 2119 | /* Initialize the interrupt URB. */ |
c0efd232 LP |
2120 | if ((ret = uvc_status_init(dev)) < 0) { |
2121 | uvc_printk(KERN_INFO, "Unable to initialize the status " | |
2122 | "endpoint (%d), status interrupt will not be " | |
2123 | "supported.\n", ret); | |
2124 | } | |
2125 | ||
2126 | uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); | |
3dae8b41 | 2127 | usb_enable_autosuspend(udev); |
c0efd232 LP |
2128 | return 0; |
2129 | ||
2130 | error: | |
716fdee1 | 2131 | uvc_unregister_video(dev); |
c0efd232 LP |
2132 | return -ENODEV; |
2133 | } | |
2134 | ||
2135 | static void uvc_disconnect(struct usb_interface *intf) | |
2136 | { | |
2137 | struct uvc_device *dev = usb_get_intfdata(intf); | |
2138 | ||
2139 | /* Set the USB interface data to NULL. This can be done outside the | |
2140 | * lock, as there's no other reader. | |
2141 | */ | |
2142 | usb_set_intfdata(intf, NULL); | |
2143 | ||
b482d923 LP |
2144 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
2145 | UVC_SC_VIDEOSTREAMING) | |
c0efd232 LP |
2146 | return; |
2147 | ||
716fdee1 | 2148 | uvc_unregister_video(dev); |
c0efd232 LP |
2149 | } |
2150 | ||
2151 | static int uvc_suspend(struct usb_interface *intf, pm_message_t message) | |
2152 | { | |
2153 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 2154 | struct uvc_streaming *stream; |
c0efd232 LP |
2155 | |
2156 | uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", | |
2157 | intf->cur_altsetting->desc.bInterfaceNumber); | |
2158 | ||
2159 | /* Controls are cached on the fly so they don't need to be saved. */ | |
b482d923 | 2160 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
17706f56 LP |
2161 | UVC_SC_VIDEOCONTROL) { |
2162 | mutex_lock(&dev->lock); | |
2163 | if (dev->users) | |
2164 | uvc_status_stop(dev); | |
2165 | mutex_unlock(&dev->lock); | |
2166 | return 0; | |
2167 | } | |
c0efd232 | 2168 | |
35f02a68 LP |
2169 | list_for_each_entry(stream, &dev->streams, list) { |
2170 | if (stream->intf == intf) | |
2171 | return uvc_video_suspend(stream); | |
c0efd232 LP |
2172 | } |
2173 | ||
35f02a68 LP |
2174 | uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " |
2175 | "mismatch.\n"); | |
2176 | return -EINVAL; | |
c0efd232 LP |
2177 | } |
2178 | ||
9b0ae867 | 2179 | static int __uvc_resume(struct usb_interface *intf, int reset) |
c0efd232 LP |
2180 | { |
2181 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 2182 | struct uvc_streaming *stream; |
b83bba24 | 2183 | int ret = 0; |
c0efd232 LP |
2184 | |
2185 | uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", | |
2186 | intf->cur_altsetting->desc.bInterfaceNumber); | |
2187 | ||
b482d923 LP |
2188 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
2189 | UVC_SC_VIDEOCONTROL) { | |
17706f56 | 2190 | if (reset) { |
17e1319f | 2191 | ret = uvc_ctrl_restore_values(dev); |
7564f67d HV |
2192 | if (ret < 0) |
2193 | return ret; | |
2194 | } | |
c0efd232 | 2195 | |
17706f56 LP |
2196 | mutex_lock(&dev->lock); |
2197 | if (dev->users) | |
2198 | ret = uvc_status_start(dev, GFP_NOIO); | |
2199 | mutex_unlock(&dev->lock); | |
2200 | ||
2201 | return ret; | |
c0efd232 LP |
2202 | } |
2203 | ||
35f02a68 | 2204 | list_for_each_entry(stream, &dev->streams, list) { |
b83bba24 LP |
2205 | if (stream->intf == intf) { |
2206 | ret = uvc_video_resume(stream, reset); | |
2207 | if (ret < 0) | |
0da4ab98 LP |
2208 | uvc_queue_streamoff(&stream->queue, |
2209 | stream->queue.queue.type); | |
b83bba24 LP |
2210 | return ret; |
2211 | } | |
c0efd232 LP |
2212 | } |
2213 | ||
35f02a68 LP |
2214 | uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " |
2215 | "mismatch.\n"); | |
2216 | return -EINVAL; | |
c0efd232 LP |
2217 | } |
2218 | ||
9b0ae867 LP |
2219 | static int uvc_resume(struct usb_interface *intf) |
2220 | { | |
2221 | return __uvc_resume(intf, 0); | |
2222 | } | |
2223 | ||
2224 | static int uvc_reset_resume(struct usb_interface *intf) | |
2225 | { | |
2226 | return __uvc_resume(intf, 1); | |
2227 | } | |
2228 | ||
310fe524 LP |
2229 | /* ------------------------------------------------------------------------ |
2230 | * Module parameters | |
2231 | */ | |
2232 | ||
e4dca7b7 | 2233 | static int uvc_clock_param_get(char *buffer, const struct kernel_param *kp) |
310fe524 LP |
2234 | { |
2235 | if (uvc_clock_param == CLOCK_MONOTONIC) | |
2236 | return sprintf(buffer, "CLOCK_MONOTONIC"); | |
2237 | else | |
2238 | return sprintf(buffer, "CLOCK_REALTIME"); | |
2239 | } | |
2240 | ||
e4dca7b7 | 2241 | static int uvc_clock_param_set(const char *val, const struct kernel_param *kp) |
310fe524 LP |
2242 | { |
2243 | if (strncasecmp(val, "clock_", strlen("clock_")) == 0) | |
2244 | val += strlen("clock_"); | |
2245 | ||
2246 | if (strcasecmp(val, "monotonic") == 0) | |
2247 | uvc_clock_param = CLOCK_MONOTONIC; | |
2248 | else if (strcasecmp(val, "realtime") == 0) | |
2249 | uvc_clock_param = CLOCK_REALTIME; | |
2250 | else | |
2251 | return -EINVAL; | |
2252 | ||
2253 | return 0; | |
2254 | } | |
2255 | ||
2256 | module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, | |
2257 | &uvc_clock_param, S_IRUGO|S_IWUSR); | |
2258 | MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); | |
5d0fd3c8 LP |
2259 | module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR); |
2260 | MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); | |
310fe524 LP |
2261 | module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); |
2262 | MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); | |
2263 | module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); | |
2264 | MODULE_PARM_DESC(quirks, "Forced device quirks"); | |
2265 | module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); | |
2266 | MODULE_PARM_DESC(trace, "Trace level bitmask"); | |
2267 | module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); | |
2268 | MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); | |
2269 | ||
c0efd232 LP |
2270 | /* ------------------------------------------------------------------------ |
2271 | * Driver initialization and cleanup | |
2272 | */ | |
2273 | ||
2274 | /* | |
2275 | * The Logitech cameras listed below have their interface class set to | |
2276 | * VENDOR_SPEC because they don't announce themselves as UVC devices, even | |
2277 | * though they are compliant. | |
2278 | */ | |
7fb2e072 | 2279 | static const struct usb_device_id uvc_ids[] = { |
4eb2697e LP |
2280 | /* LogiLink Wireless Webcam */ |
2281 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2282 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2283 | .idVendor = 0x0416, | |
2284 | .idProduct = 0xa91a, | |
2285 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2286 | .bInterfaceSubClass = 1, | |
2287 | .bInterfaceProtocol = 0, | |
2288 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
bce039c0 LP |
2289 | /* Genius eFace 2025 */ |
2290 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2291 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2292 | .idVendor = 0x0458, | |
2293 | .idProduct = 0x706e, | |
2294 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2295 | .bInterfaceSubClass = 1, | |
2296 | .bInterfaceProtocol = 0, | |
2297 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2298 | /* Microsoft Lifecam NX-6000 */ |
2299 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2300 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2301 | .idVendor = 0x045e, | |
2302 | .idProduct = 0x00f8, | |
2303 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2304 | .bInterfaceSubClass = 1, | |
2305 | .bInterfaceProtocol = 0, | |
2306 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1558ec83 LP |
2307 | /* Microsoft Lifecam NX-3000 */ |
2308 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2309 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2310 | .idVendor = 0x045e, | |
2311 | .idProduct = 0x0721, | |
2312 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2313 | .bInterfaceSubClass = 1, | |
2314 | .bInterfaceProtocol = 0, | |
2315 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
c0efd232 LP |
2316 | /* Microsoft Lifecam VX-7000 */ |
2317 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2318 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2319 | .idVendor = 0x045e, | |
2320 | .idProduct = 0x0723, | |
2321 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2322 | .bInterfaceSubClass = 1, | |
2323 | .bInterfaceProtocol = 0, | |
2324 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
2325 | /* Logitech Quickcam Fusion */ | |
2326 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2327 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2328 | .idVendor = 0x046d, | |
2329 | .idProduct = 0x08c1, | |
2330 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2331 | .bInterfaceSubClass = 1, | |
2332 | .bInterfaceProtocol = 0 }, | |
2333 | /* Logitech Quickcam Orbit MP */ | |
2334 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2335 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2336 | .idVendor = 0x046d, | |
2337 | .idProduct = 0x08c2, | |
2338 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2339 | .bInterfaceSubClass = 1, | |
2340 | .bInterfaceProtocol = 0 }, | |
2341 | /* Logitech Quickcam Pro for Notebook */ | |
2342 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2343 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2344 | .idVendor = 0x046d, | |
2345 | .idProduct = 0x08c3, | |
2346 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2347 | .bInterfaceSubClass = 1, | |
2348 | .bInterfaceProtocol = 0 }, | |
2349 | /* Logitech Quickcam Pro 5000 */ | |
2350 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2351 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2352 | .idVendor = 0x046d, | |
2353 | .idProduct = 0x08c5, | |
2354 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2355 | .bInterfaceSubClass = 1, | |
2356 | .bInterfaceProtocol = 0 }, | |
2357 | /* Logitech Quickcam OEM Dell Notebook */ | |
2358 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2359 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2360 | .idVendor = 0x046d, | |
2361 | .idProduct = 0x08c6, | |
2362 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2363 | .bInterfaceSubClass = 1, | |
2364 | .bInterfaceProtocol = 0 }, | |
2365 | /* Logitech Quickcam OEM Cisco VT Camera II */ | |
2366 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2367 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2368 | .idVendor = 0x046d, | |
2369 | .idProduct = 0x08c7, | |
2370 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2371 | .bInterfaceSubClass = 1, | |
2372 | .bInterfaceProtocol = 0 }, | |
17e1319f WM |
2373 | /* Logitech HD Pro Webcam C920 */ |
2374 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2375 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2376 | .idVendor = 0x046d, | |
2377 | .idProduct = 0x082d, | |
2378 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2379 | .bInterfaceSubClass = 1, | |
2380 | .bInterfaceProtocol = 0, | |
2381 | .driver_info = UVC_QUIRK_RESTORE_CTRLS_ON_INIT }, | |
86d8b6ab LP |
2382 | /* Chicony CNF7129 (Asus EEE 100HE) */ |
2383 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2384 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2385 | .idVendor = 0x04f2, | |
2386 | .idProduct = 0xb071, | |
2387 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2388 | .bInterfaceSubClass = 1, | |
2389 | .bInterfaceProtocol = 0, | |
2390 | .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE }, | |
f61d1d8a LP |
2391 | /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ |
2392 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2393 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2394 | .idVendor = 0x058f, | |
2395 | .idProduct = 0x3820, | |
2396 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2397 | .bInterfaceSubClass = 1, | |
2398 | .bInterfaceProtocol = 0, | |
2399 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
3efe2f1b LP |
2400 | /* Dell XPS m1530 */ |
2401 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2402 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2403 | .idVendor = 0x05a9, | |
2404 | .idProduct = 0x2640, | |
2405 | .bInterfaceClass = USB_CLASS_VIDEO, | |
89e0f248 JS |
2406 | .bInterfaceSubClass = 1, |
2407 | .bInterfaceProtocol = 0, | |
2408 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
2409 | /* Dell SP2008WFP Monitor */ | |
2410 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2411 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2412 | .idVendor = 0x05a9, | |
2413 | .idProduct = 0x2641, | |
2414 | .bInterfaceClass = USB_CLASS_VIDEO, | |
3efe2f1b LP |
2415 | .bInterfaceSubClass = 1, |
2416 | .bInterfaceProtocol = 0, | |
2417 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
c2a273b2 JS |
2418 | /* Dell Alienware X51 */ |
2419 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2420 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2421 | .idVendor = 0x05a9, | |
2422 | .idProduct = 0x2643, | |
2423 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2424 | .bInterfaceSubClass = 1, | |
2425 | .bInterfaceProtocol = 0, | |
2426 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
afcf44c7 KM |
2427 | /* Dell Studio Hybrid 140g (OmniVision webcam) */ |
2428 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2429 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2430 | .idVendor = 0x05a9, | |
2431 | .idProduct = 0x264a, | |
2432 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2433 | .bInterfaceSubClass = 1, | |
2434 | .bInterfaceProtocol = 0, | |
2435 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
62ea864f PF |
2436 | /* Dell XPS M1330 (OmniVision OV7670 webcam) */ |
2437 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2438 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2439 | .idVendor = 0x05a9, | |
2440 | .idProduct = 0x7670, | |
2441 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2442 | .bInterfaceSubClass = 1, | |
2443 | .bInterfaceProtocol = 0, | |
2444 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
c0efd232 | 2445 | /* Apple Built-In iSight */ |
2c2d264b | 2446 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 LP |
2447 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2448 | .idVendor = 0x05ac, | |
2449 | .idProduct = 0x8501, | |
2c2d264b LP |
2450 | .bInterfaceClass = USB_CLASS_VIDEO, |
2451 | .bInterfaceSubClass = 1, | |
2452 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2453 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2454 | | UVC_QUIRK_BUILTIN_ISIGHT }, | |
7b848ed6 DR |
2455 | /* Apple Built-In iSight via iBridge */ |
2456 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2457 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2458 | .idVendor = 0x05ac, | |
2459 | .idProduct = 0x8600, | |
2460 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2461 | .bInterfaceSubClass = 1, | |
2462 | .bInterfaceProtocol = 0, | |
2463 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
949d9264 KS |
2464 | /* Foxlink ("HP Webcam" on HP Mini 5103) */ |
2465 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2466 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2467 | .idVendor = 0x05c8, | |
2468 | .idProduct = 0x0403, | |
2469 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2470 | .bInterfaceSubClass = 1, | |
2471 | .bInterfaceProtocol = 0, | |
2472 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
c0efd232 | 2473 | /* Genesys Logic USB 2.0 PC Camera */ |
2c2d264b | 2474 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 | 2475 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2c2d264b LP |
2476 | .idVendor = 0x05e3, |
2477 | .idProduct = 0x0505, | |
2478 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2479 | .bInterfaceSubClass = 1, | |
2480 | .bInterfaceProtocol = 0, | |
2481 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
e01a2344 LP |
2482 | /* Hercules Classic Silver */ |
2483 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2484 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2485 | .idVendor = 0x06f8, | |
2486 | .idProduct = 0x300c, | |
2487 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2488 | .bInterfaceSubClass = 1, | |
2489 | .bInterfaceProtocol = 0, | |
2490 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
d79cd839 LP |
2491 | /* ViMicro Vega */ |
2492 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2493 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2494 | .idVendor = 0x0ac8, | |
2495 | .idProduct = 0x332d, | |
2496 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2497 | .bInterfaceSubClass = 1, | |
2498 | .bInterfaceProtocol = 0, | |
2499 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2500 | /* ViMicro - Minoru3D */ | |
2501 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2502 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2503 | .idVendor = 0x0ac8, | |
2504 | .idProduct = 0x3410, | |
2505 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2506 | .bInterfaceSubClass = 1, | |
2507 | .bInterfaceProtocol = 0, | |
2508 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2509 | /* ViMicro Venus - Minoru3D */ | |
2510 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
50144aee LP |
2511 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2512 | .idVendor = 0x0ac8, | |
d79cd839 | 2513 | .idProduct = 0x3420, |
50144aee LP |
2514 | .bInterfaceClass = USB_CLASS_VIDEO, |
2515 | .bInterfaceSubClass = 1, | |
2516 | .bInterfaceProtocol = 0, | |
2517 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
d584b838 LP |
2518 | /* Ophir Optronics - SPCAM 620U */ |
2519 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2520 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2521 | .idVendor = 0x0bd3, | |
2522 | .idProduct = 0x0555, | |
2523 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2524 | .bInterfaceSubClass = 1, | |
2525 | .bInterfaceProtocol = 0, | |
2526 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2527 | /* MT6227 */ |
2528 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2529 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2530 | .idVendor = 0x0e8d, | |
2531 | .idProduct = 0x0004, | |
2532 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2533 | .bInterfaceSubClass = 1, | |
2534 | .bInterfaceProtocol = 0, | |
bab6f66c LP |
2535 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2536 | | UVC_QUIRK_PROBE_DEF }, | |
9275b32b LP |
2537 | /* IMC Networks (Medion Akoya) */ |
2538 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2539 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2540 | .idVendor = 0x13d3, | |
2541 | .idProduct = 0x5103, | |
2542 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2543 | .bInterfaceSubClass = 1, | |
2544 | .bInterfaceProtocol = 0, | |
2545 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
d1787b1f LP |
2546 | /* JMicron USB2.0 XGA WebCam */ |
2547 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2548 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2549 | .idVendor = 0x152d, | |
2550 | .idProduct = 0x0310, | |
2551 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2552 | .bInterfaceSubClass = 1, | |
2553 | .bInterfaceProtocol = 0, | |
2554 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2555 | /* Syntek (HP Spartan) */ |
2556 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2557 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2558 | .idVendor = 0x174f, | |
2559 | .idProduct = 0x5212, | |
2560 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2561 | .bInterfaceSubClass = 1, | |
2562 | .bInterfaceProtocol = 0, | |
25e69850 | 2563 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
562f0fed LP |
2564 | /* Syntek (Samsung Q310) */ |
2565 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2566 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2567 | .idVendor = 0x174f, | |
2568 | .idProduct = 0x5931, | |
2569 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2570 | .bInterfaceSubClass = 1, | |
2571 | .bInterfaceProtocol = 0, | |
2572 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f129b03b LP |
2573 | /* Syntek (Packard Bell EasyNote MX52 */ |
2574 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2575 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2576 | .idVendor = 0x174f, | |
2577 | .idProduct = 0x8a12, | |
2578 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2579 | .bInterfaceSubClass = 1, | |
2580 | .bInterfaceProtocol = 0, | |
2581 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f61d1d8a | 2582 | /* Syntek (Asus F9SG) */ |
25e69850 LP |
2583 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2584 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2585 | .idVendor = 0x174f, | |
2586 | .idProduct = 0x8a31, | |
2587 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2588 | .bInterfaceSubClass = 1, | |
2589 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2590 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
2591 | /* Syntek (Asus U3S) */ | |
2592 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2593 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2594 | .idVendor = 0x174f, | |
2595 | .idProduct = 0x8a33, | |
2596 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2597 | .bInterfaceSubClass = 1, | |
2598 | .bInterfaceProtocol = 0, | |
2599 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
0ce566da LP |
2600 | /* Syntek (JAOtech Smart Terminal) */ |
2601 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2602 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2603 | .idVendor = 0x174f, | |
2604 | .idProduct = 0x8a34, | |
2605 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2606 | .bInterfaceSubClass = 1, | |
2607 | .bInterfaceProtocol = 0, | |
2608 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
70092c26 LP |
2609 | /* Miricle 307K */ |
2610 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2611 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2612 | .idVendor = 0x17dc, | |
2613 | .idProduct = 0x0202, | |
2614 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2615 | .bInterfaceSubClass = 1, | |
2616 | .bInterfaceProtocol = 0, | |
2617 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
849a3aba | 2618 | /* Lenovo Thinkpad SL400/SL500 */ |
2f38483b LP |
2619 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2620 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2621 | .idVendor = 0x17ef, | |
2622 | .idProduct = 0x480b, | |
2623 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2624 | .bInterfaceSubClass = 1, | |
2625 | .bInterfaceProtocol = 0, | |
2626 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
2d2bf2a3 LP |
2627 | /* Aveo Technology USB 2.0 Camera */ |
2628 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2629 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2630 | .idVendor = 0x1871, | |
2631 | .idProduct = 0x0306, | |
2632 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2633 | .bInterfaceSubClass = 1, | |
2634 | .bInterfaceProtocol = 0, | |
5bdf1377 LP |
2635 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2636 | | UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
fe652471 LP |
2637 | /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ |
2638 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2639 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2640 | .idVendor = 0x1871, | |
2641 | .idProduct = 0x0516, | |
2642 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2643 | .bInterfaceSubClass = 1, | |
2644 | .bInterfaceProtocol = 0 }, | |
c0efd232 LP |
2645 | /* Ecamm Pico iMage */ |
2646 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2647 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2648 | .idVendor = 0x18cd, | |
2649 | .idProduct = 0xcafe, | |
2650 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2651 | .bInterfaceSubClass = 1, | |
2652 | .bInterfaceProtocol = 0, | |
2653 | .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
2bb00fe6 LP |
2654 | /* Manta MM-353 Plako */ |
2655 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2656 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2657 | .idVendor = 0x18ec, | |
2658 | .idProduct = 0x3188, | |
2659 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2660 | .bInterfaceSubClass = 1, | |
2661 | .bInterfaceProtocol = 0, | |
2662 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
ca4a3456 LP |
2663 | /* FSC WebCam V30S */ |
2664 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2665 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2666 | .idVendor = 0x18ec, | |
2667 | .idProduct = 0x3288, | |
2668 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2669 | .bInterfaceSubClass = 1, | |
2670 | .bInterfaceProtocol = 0, | |
2671 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1e4d05bc LP |
2672 | /* Arkmicro unbranded */ |
2673 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2674 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2675 | .idVendor = 0x18ec, | |
2676 | .idProduct = 0x3290, | |
2677 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2678 | .bInterfaceSubClass = 1, | |
2679 | .bInterfaceProtocol = 0, | |
2680 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
fd3e9f2f AC |
2681 | /* The Imaging Source USB CCD cameras */ |
2682 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2683 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2684 | .idVendor = 0x199e, | |
2685 | .idProduct = 0x8102, | |
2686 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2687 | .bInterfaceSubClass = 1, | |
2688 | .bInterfaceProtocol = 0 }, | |
c0efd232 LP |
2689 | /* Bodelin ProScopeHR */ |
2690 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2691 | | USB_DEVICE_ID_MATCH_DEV_HI | |
2692 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2693 | .idVendor = 0x19ab, | |
2694 | .idProduct = 0x1000, | |
2695 | .bcdDevice_hi = 0x0126, | |
2696 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2697 | .bInterfaceSubClass = 1, | |
2698 | .bInterfaceProtocol = 0, | |
2699 | .driver_info = UVC_QUIRK_STATUS_INTERVAL }, | |
3bc766ad LP |
2700 | /* MSI StarCam 370i */ |
2701 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2702 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2703 | .idVendor = 0x1b3b, | |
2704 | .idProduct = 0x2951, | |
2705 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2706 | .bInterfaceSubClass = 1, | |
2707 | .bInterfaceProtocol = 0, | |
2708 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2709 | /* SiGma Micro USB Web Camera */ |
2710 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2711 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2712 | .idVendor = 0x1c4f, | |
2713 | .idProduct = 0x3000, | |
2714 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2715 | .bInterfaceSubClass = 1, | |
2716 | .bInterfaceProtocol = 0, | |
2717 | .driver_info = UVC_QUIRK_PROBE_MINMAX | |
d732c44c | 2718 | | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, |
e1b78a33 PZ |
2719 | /* Oculus VR Positional Tracker DK2 */ |
2720 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2721 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2722 | .idVendor = 0x2833, | |
2723 | .idProduct = 0x0201, | |
2724 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2725 | .bInterfaceSubClass = 1, | |
2726 | .bInterfaceProtocol = 0, | |
2727 | .driver_info = UVC_QUIRK_FORCE_Y8 }, | |
03c47aae PZ |
2728 | /* Oculus VR Rift Sensor */ |
2729 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2730 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2731 | .idVendor = 0x2833, | |
2732 | .idProduct = 0x0211, | |
2733 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2734 | .bInterfaceSubClass = 1, | |
2735 | .bInterfaceProtocol = 0, | |
2736 | .driver_info = UVC_QUIRK_FORCE_Y8 }, | |
c0efd232 | 2737 | /* Generic USB Video Class */ |
8afe97be LP |
2738 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, |
2739 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, | |
c0efd232 LP |
2740 | {} |
2741 | }; | |
2742 | ||
2743 | MODULE_DEVICE_TABLE(usb, uvc_ids); | |
2744 | ||
2745 | struct uvc_driver uvc_driver = { | |
2746 | .driver = { | |
2747 | .name = "uvcvideo", | |
2748 | .probe = uvc_probe, | |
2749 | .disconnect = uvc_disconnect, | |
2750 | .suspend = uvc_suspend, | |
2751 | .resume = uvc_resume, | |
9b0ae867 | 2752 | .reset_resume = uvc_reset_resume, |
c0efd232 LP |
2753 | .id_table = uvc_ids, |
2754 | .supports_autosuspend = 1, | |
2755 | }, | |
2756 | }; | |
2757 | ||
2758 | static int __init uvc_init(void) | |
2759 | { | |
edbaa398 | 2760 | int ret; |
c0efd232 | 2761 | |
edbaa398 AF |
2762 | uvc_debugfs_init(); |
2763 | ||
2764 | ret = usb_register(&uvc_driver.driver); | |
2765 | if (ret < 0) { | |
2766 | uvc_debugfs_cleanup(); | |
2767 | return ret; | |
2768 | } | |
2769 | ||
2770 | printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); | |
2771 | return 0; | |
c0efd232 LP |
2772 | } |
2773 | ||
2774 | static void __exit uvc_cleanup(void) | |
2775 | { | |
2776 | usb_deregister(&uvc_driver.driver); | |
edbaa398 | 2777 | uvc_debugfs_cleanup(); |
c0efd232 LP |
2778 | } |
2779 | ||
2780 | module_init(uvc_init); | |
2781 | module_exit(uvc_cleanup); | |
2782 | ||
c0efd232 LP |
2783 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2784 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2785 | MODULE_LICENSE("GPL"); | |
2786 | MODULE_VERSION(DRIVER_VERSION); | |
f87086e3 | 2787 |