Commit | Line | Data |
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c0efd232 LP |
1 | /* |
2 | * uvc_driver.c -- USB Video Class driver | |
3 | * | |
2c2d264b | 4 | * Copyright (C) 2005-2009 |
c0efd232 LP |
5 | * Laurent Pinchart (laurent.pinchart@skynet.be) |
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 | ||
14 | /* | |
ff924203 LP |
15 | * This driver aims to support video input and ouput devices compliant with the |
16 | * 'USB Video Class' specification. | |
c0efd232 LP |
17 | * |
18 | * The driver doesn't support the deprecated v4l1 interface. It implements the | |
19 | * mmap capture method only, and doesn't do any image format conversion in | |
20 | * software. If your user-space application doesn't support YUYV or MJPEG, fix | |
21 | * it :-). Please note that the MJPEG data have been stripped from their | |
22 | * Huffman tables (DHT marker), you will need to add it back if your JPEG | |
23 | * codec can't handle MJPEG data. | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
c0efd232 LP |
27 | #include <linux/list.h> |
28 | #include <linux/module.h> | |
29 | #include <linux/usb.h> | |
30 | #include <linux/videodev2.h> | |
31 | #include <linux/vmalloc.h> | |
32 | #include <linux/wait.h> | |
33 | #include <asm/atomic.h> | |
9bc6218d | 34 | #include <asm/unaligned.h> |
c0efd232 LP |
35 | |
36 | #include <media/v4l2-common.h> | |
37 | ||
38 | #include "uvcvideo.h" | |
39 | ||
40 | #define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>" | |
41 | #define DRIVER_DESC "USB Video Class driver" | |
42 | #ifndef DRIVER_VERSION | |
43 | #define DRIVER_VERSION "v0.1.0" | |
44 | #endif | |
45 | ||
310fe524 | 46 | unsigned int uvc_clock_param = CLOCK_MONOTONIC; |
0fbd8ee6 | 47 | unsigned int uvc_no_drop_param; |
c0efd232 LP |
48 | static unsigned int uvc_quirks_param; |
49 | unsigned int uvc_trace_param; | |
b232a012 | 50 | unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; |
c0efd232 LP |
51 | |
52 | /* ------------------------------------------------------------------------ | |
2c2d264b | 53 | * Video formats |
c0efd232 LP |
54 | */ |
55 | ||
56 | static struct uvc_format_desc uvc_fmts[] = { | |
57 | { | |
58 | .name = "YUV 4:2:2 (YUYV)", | |
59 | .guid = UVC_GUID_FORMAT_YUY2, | |
60 | .fcc = V4L2_PIX_FMT_YUYV, | |
61 | }, | |
62 | { | |
63 | .name = "YUV 4:2:0 (NV12)", | |
64 | .guid = UVC_GUID_FORMAT_NV12, | |
65 | .fcc = V4L2_PIX_FMT_NV12, | |
66 | }, | |
67 | { | |
68 | .name = "MJPEG", | |
69 | .guid = UVC_GUID_FORMAT_MJPEG, | |
70 | .fcc = V4L2_PIX_FMT_MJPEG, | |
71 | }, | |
72 | { | |
73 | .name = "YVU 4:2:0 (YV12)", | |
74 | .guid = UVC_GUID_FORMAT_YV12, | |
75 | .fcc = V4L2_PIX_FMT_YVU420, | |
76 | }, | |
77 | { | |
78 | .name = "YUV 4:2:0 (I420)", | |
79 | .guid = UVC_GUID_FORMAT_I420, | |
80 | .fcc = V4L2_PIX_FMT_YUV420, | |
81 | }, | |
82 | { | |
83 | .name = "YUV 4:2:2 (UYVY)", | |
84 | .guid = UVC_GUID_FORMAT_UYVY, | |
85 | .fcc = V4L2_PIX_FMT_UYVY, | |
86 | }, | |
87 | { | |
88 | .name = "Greyscale", | |
89 | .guid = UVC_GUID_FORMAT_Y800, | |
90 | .fcc = V4L2_PIX_FMT_GREY, | |
91 | }, | |
92 | { | |
93 | .name = "RGB Bayer", | |
94 | .guid = UVC_GUID_FORMAT_BY8, | |
95 | .fcc = V4L2_PIX_FMT_SBGGR8, | |
96 | }, | |
97 | }; | |
98 | ||
99 | /* ------------------------------------------------------------------------ | |
100 | * Utility functions | |
101 | */ | |
102 | ||
103 | struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, | |
104 | __u8 epaddr) | |
105 | { | |
106 | struct usb_host_endpoint *ep; | |
107 | unsigned int i; | |
108 | ||
109 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
110 | ep = &alts->endpoint[i]; | |
111 | if (ep->desc.bEndpointAddress == epaddr) | |
112 | return ep; | |
113 | } | |
114 | ||
115 | return NULL; | |
116 | } | |
117 | ||
118 | static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) | |
119 | { | |
120 | unsigned int len = ARRAY_SIZE(uvc_fmts); | |
121 | unsigned int i; | |
122 | ||
123 | for (i = 0; i < len; ++i) { | |
124 | if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) | |
125 | return &uvc_fmts[i]; | |
126 | } | |
127 | ||
128 | return NULL; | |
129 | } | |
130 | ||
131 | static __u32 uvc_colorspace(const __u8 primaries) | |
132 | { | |
133 | static const __u8 colorprimaries[] = { | |
134 | 0, | |
135 | V4L2_COLORSPACE_SRGB, | |
136 | V4L2_COLORSPACE_470_SYSTEM_M, | |
137 | V4L2_COLORSPACE_470_SYSTEM_BG, | |
138 | V4L2_COLORSPACE_SMPTE170M, | |
139 | V4L2_COLORSPACE_SMPTE240M, | |
140 | }; | |
141 | ||
142 | if (primaries < ARRAY_SIZE(colorprimaries)) | |
143 | return colorprimaries[primaries]; | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | /* Simplify a fraction using a simple continued fraction decomposition. The | |
149 | * idea here is to convert fractions such as 333333/10000000 to 1/30 using | |
150 | * 32 bit arithmetic only. The algorithm is not perfect and relies upon two | |
151 | * arbitrary parameters to remove non-significative terms from the simple | |
152 | * continued fraction decomposition. Using 8 and 333 for n_terms and threshold | |
153 | * respectively seems to give nice results. | |
154 | */ | |
155 | void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, | |
156 | unsigned int n_terms, unsigned int threshold) | |
157 | { | |
158 | uint32_t *an; | |
159 | uint32_t x, y, r; | |
160 | unsigned int i, n; | |
161 | ||
162 | an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); | |
163 | if (an == NULL) | |
164 | return; | |
165 | ||
166 | /* Convert the fraction to a simple continued fraction. See | |
167 | * http://mathforum.org/dr.math/faq/faq.fractions.html | |
168 | * Stop if the current term is bigger than or equal to the given | |
169 | * threshold. | |
170 | */ | |
171 | x = *numerator; | |
172 | y = *denominator; | |
173 | ||
174 | for (n = 0; n < n_terms && y != 0; ++n) { | |
175 | an[n] = x / y; | |
176 | if (an[n] >= threshold) { | |
177 | if (n < 2) | |
178 | n++; | |
179 | break; | |
180 | } | |
181 | ||
182 | r = x - an[n] * y; | |
183 | x = y; | |
184 | y = r; | |
185 | } | |
186 | ||
187 | /* Expand the simple continued fraction back to an integer fraction. */ | |
188 | x = 0; | |
189 | y = 1; | |
190 | ||
191 | for (i = n; i > 0; --i) { | |
192 | r = y; | |
193 | y = an[i-1] * y + x; | |
194 | x = r; | |
195 | } | |
196 | ||
197 | *numerator = y; | |
198 | *denominator = x; | |
199 | kfree(an); | |
200 | } | |
201 | ||
202 | /* Convert a fraction to a frame interval in 100ns multiples. The idea here is | |
203 | * to compute numerator / denominator * 10000000 using 32 bit fixed point | |
204 | * arithmetic only. | |
205 | */ | |
206 | uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) | |
207 | { | |
208 | uint32_t multiplier; | |
209 | ||
210 | /* Saturate the result if the operation would overflow. */ | |
211 | if (denominator == 0 || | |
212 | numerator/denominator >= ((uint32_t)-1)/10000000) | |
213 | return (uint32_t)-1; | |
214 | ||
215 | /* Divide both the denominator and the multiplier by two until | |
216 | * numerator * multiplier doesn't overflow. If anyone knows a better | |
217 | * algorithm please let me know. | |
218 | */ | |
219 | multiplier = 10000000; | |
220 | while (numerator > ((uint32_t)-1)/multiplier) { | |
221 | multiplier /= 2; | |
222 | denominator /= 2; | |
223 | } | |
224 | ||
225 | return denominator ? numerator * multiplier / denominator : 0; | |
226 | } | |
227 | ||
228 | /* ------------------------------------------------------------------------ | |
229 | * Terminal and unit management | |
230 | */ | |
231 | ||
232 | static struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) | |
233 | { | |
234 | struct uvc_entity *entity; | |
235 | ||
236 | list_for_each_entry(entity, &dev->entities, list) { | |
237 | if (entity->id == id) | |
238 | return entity; | |
239 | } | |
240 | ||
241 | return NULL; | |
242 | } | |
243 | ||
244 | static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, | |
245 | int id, struct uvc_entity *entity) | |
246 | { | |
247 | unsigned int i; | |
248 | ||
249 | if (entity == NULL) | |
250 | entity = list_entry(&dev->entities, struct uvc_entity, list); | |
251 | ||
252 | list_for_each_entry_continue(entity, &dev->entities, list) { | |
8ca5a639 LP |
253 | for (i = 0; i < entity->bNrInPins; ++i) |
254 | if (entity->baSourceID[i] == id) | |
c0efd232 | 255 | return entity; |
c0efd232 LP |
256 | } |
257 | ||
258 | return NULL; | |
259 | } | |
260 | ||
8e113595 LP |
261 | static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) |
262 | { | |
263 | struct uvc_streaming *stream; | |
264 | ||
265 | list_for_each_entry(stream, &dev->streams, list) { | |
266 | if (stream->header.bTerminalLink == id) | |
267 | return stream; | |
268 | } | |
269 | ||
270 | return NULL; | |
271 | } | |
272 | ||
c0efd232 | 273 | /* ------------------------------------------------------------------------ |
8e113595 | 274 | * Descriptors parsing |
c0efd232 LP |
275 | */ |
276 | ||
277 | static int uvc_parse_format(struct uvc_device *dev, | |
278 | struct uvc_streaming *streaming, struct uvc_format *format, | |
279 | __u32 **intervals, unsigned char *buffer, int buflen) | |
280 | { | |
281 | struct usb_interface *intf = streaming->intf; | |
282 | struct usb_host_interface *alts = intf->cur_altsetting; | |
283 | struct uvc_format_desc *fmtdesc; | |
284 | struct uvc_frame *frame; | |
285 | const unsigned char *start = buffer; | |
286 | unsigned int interval; | |
287 | unsigned int i, n; | |
288 | __u8 ftype; | |
289 | ||
290 | format->type = buffer[2]; | |
291 | format->index = buffer[3]; | |
292 | ||
293 | switch (buffer[2]) { | |
b482d923 LP |
294 | case UVC_VS_FORMAT_UNCOMPRESSED: |
295 | case UVC_VS_FORMAT_FRAME_BASED: | |
296 | n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; | |
233548a2 | 297 | if (buflen < n) { |
b2d9cc42 | 298 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
299 | "interface %d FORMAT error\n", |
300 | dev->udev->devnum, | |
301 | alts->desc.bInterfaceNumber); | |
302 | return -EINVAL; | |
303 | } | |
304 | ||
305 | /* Find the format descriptor from its GUID. */ | |
306 | fmtdesc = uvc_format_by_guid(&buffer[5]); | |
307 | ||
308 | if (fmtdesc != NULL) { | |
d0ebf307 | 309 | strlcpy(format->name, fmtdesc->name, |
c0efd232 LP |
310 | sizeof format->name); |
311 | format->fcc = fmtdesc->fcc; | |
312 | } else { | |
313 | uvc_printk(KERN_INFO, "Unknown video format " | |
314 | UVC_GUID_FORMAT "\n", | |
315 | UVC_GUID_ARGS(&buffer[5])); | |
316 | snprintf(format->name, sizeof format->name, | |
317 | UVC_GUID_FORMAT, UVC_GUID_ARGS(&buffer[5])); | |
318 | format->fcc = 0; | |
319 | } | |
320 | ||
321 | format->bpp = buffer[21]; | |
b482d923 LP |
322 | if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { |
323 | ftype = UVC_VS_FRAME_UNCOMPRESSED; | |
c0efd232 | 324 | } else { |
b482d923 | 325 | ftype = UVC_VS_FRAME_FRAME_BASED; |
c0efd232 LP |
326 | if (buffer[27]) |
327 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
328 | } | |
329 | break; | |
330 | ||
b482d923 | 331 | case UVC_VS_FORMAT_MJPEG: |
c0efd232 | 332 | if (buflen < 11) { |
b2d9cc42 | 333 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
334 | "interface %d FORMAT error\n", |
335 | dev->udev->devnum, | |
336 | alts->desc.bInterfaceNumber); | |
337 | return -EINVAL; | |
338 | } | |
339 | ||
d0ebf307 | 340 | strlcpy(format->name, "MJPEG", sizeof format->name); |
c0efd232 LP |
341 | format->fcc = V4L2_PIX_FMT_MJPEG; |
342 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
343 | format->bpp = 0; | |
b482d923 | 344 | ftype = UVC_VS_FRAME_MJPEG; |
c0efd232 LP |
345 | break; |
346 | ||
b482d923 | 347 | case UVC_VS_FORMAT_DV: |
c0efd232 | 348 | if (buflen < 9) { |
b2d9cc42 | 349 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
350 | "interface %d FORMAT error\n", |
351 | dev->udev->devnum, | |
352 | alts->desc.bInterfaceNumber); | |
353 | return -EINVAL; | |
354 | } | |
355 | ||
356 | switch (buffer[8] & 0x7f) { | |
357 | case 0: | |
d0ebf307 | 358 | strlcpy(format->name, "SD-DV", sizeof format->name); |
c0efd232 LP |
359 | break; |
360 | case 1: | |
d0ebf307 | 361 | strlcpy(format->name, "SDL-DV", sizeof format->name); |
c0efd232 LP |
362 | break; |
363 | case 2: | |
d0ebf307 | 364 | strlcpy(format->name, "HD-DV", sizeof format->name); |
c0efd232 LP |
365 | break; |
366 | default: | |
b2d9cc42 | 367 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
368 | "interface %d: unknown DV format %u\n", |
369 | dev->udev->devnum, | |
370 | alts->desc.bInterfaceNumber, buffer[8]); | |
371 | return -EINVAL; | |
372 | } | |
373 | ||
d0ebf307 | 374 | strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", |
c0efd232 LP |
375 | sizeof format->name); |
376 | ||
377 | format->fcc = V4L2_PIX_FMT_DV; | |
378 | format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; | |
379 | format->bpp = 0; | |
380 | ftype = 0; | |
381 | ||
382 | /* Create a dummy frame descriptor. */ | |
383 | frame = &format->frame[0]; | |
384 | memset(&format->frame[0], 0, sizeof format->frame[0]); | |
385 | frame->bFrameIntervalType = 1; | |
386 | frame->dwDefaultFrameInterval = 1; | |
387 | frame->dwFrameInterval = *intervals; | |
388 | *(*intervals)++ = 1; | |
389 | format->nframes = 1; | |
390 | break; | |
391 | ||
b482d923 LP |
392 | case UVC_VS_FORMAT_MPEG2TS: |
393 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
394 | /* Not supported yet. */ |
395 | default: | |
b2d9cc42 | 396 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
397 | "interface %d unsupported format %u\n", |
398 | dev->udev->devnum, alts->desc.bInterfaceNumber, | |
399 | buffer[2]); | |
400 | return -EINVAL; | |
401 | } | |
402 | ||
403 | uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); | |
404 | ||
405 | buflen -= buffer[0]; | |
406 | buffer += buffer[0]; | |
407 | ||
408 | /* Parse the frame descriptors. Only uncompressed, MJPEG and frame | |
409 | * based formats have frame descriptors. | |
410 | */ | |
c4ed8c66 LP |
411 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
412 | buffer[2] == ftype) { | |
078f8947 | 413 | frame = &format->frame[format->nframes]; |
b482d923 | 414 | if (ftype != UVC_VS_FRAME_FRAME_BASED) |
c0efd232 LP |
415 | n = buflen > 25 ? buffer[25] : 0; |
416 | else | |
417 | n = buflen > 21 ? buffer[21] : 0; | |
418 | ||
419 | n = n ? n : 3; | |
420 | ||
421 | if (buflen < 26 + 4*n) { | |
b2d9cc42 | 422 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
423 | "interface %d FRAME error\n", dev->udev->devnum, |
424 | alts->desc.bInterfaceNumber); | |
425 | return -EINVAL; | |
426 | } | |
427 | ||
428 | frame->bFrameIndex = buffer[3]; | |
429 | frame->bmCapabilities = buffer[4]; | |
9bc6218d MH |
430 | frame->wWidth = get_unaligned_le16(&buffer[5]); |
431 | frame->wHeight = get_unaligned_le16(&buffer[7]); | |
432 | frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); | |
433 | frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); | |
b482d923 | 434 | if (ftype != UVC_VS_FRAME_FRAME_BASED) { |
c0efd232 | 435 | frame->dwMaxVideoFrameBufferSize = |
9bc6218d | 436 | get_unaligned_le32(&buffer[17]); |
c0efd232 | 437 | frame->dwDefaultFrameInterval = |
9bc6218d | 438 | get_unaligned_le32(&buffer[21]); |
c0efd232 LP |
439 | frame->bFrameIntervalType = buffer[25]; |
440 | } else { | |
441 | frame->dwMaxVideoFrameBufferSize = 0; | |
442 | frame->dwDefaultFrameInterval = | |
9bc6218d | 443 | get_unaligned_le32(&buffer[17]); |
c0efd232 LP |
444 | frame->bFrameIntervalType = buffer[21]; |
445 | } | |
446 | frame->dwFrameInterval = *intervals; | |
447 | ||
448 | /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize | |
449 | * completely. Observed behaviours range from setting the | |
2c2d264b | 450 | * value to 1.1x the actual frame size to hardwiring the |
c0efd232 LP |
451 | * 16 low bits to 0. This results in a higher than necessary |
452 | * memory usage as well as a wrong image size information. For | |
453 | * uncompressed formats this can be fixed by computing the | |
454 | * value from the frame size. | |
455 | */ | |
456 | if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) | |
457 | frame->dwMaxVideoFrameBufferSize = format->bpp | |
458 | * frame->wWidth * frame->wHeight / 8; | |
459 | ||
460 | /* Some bogus devices report dwMinFrameInterval equal to | |
461 | * dwMaxFrameInterval and have dwFrameIntervalStep set to | |
462 | * zero. Setting all null intervals to 1 fixes the problem and | |
2c2d264b | 463 | * some other divisions by zero that could happen. |
c0efd232 LP |
464 | */ |
465 | for (i = 0; i < n; ++i) { | |
9bc6218d | 466 | interval = get_unaligned_le32(&buffer[26+4*i]); |
c0efd232 LP |
467 | *(*intervals)++ = interval ? interval : 1; |
468 | } | |
469 | ||
470 | /* Make sure that the default frame interval stays between | |
471 | * the boundaries. | |
472 | */ | |
473 | n -= frame->bFrameIntervalType ? 1 : 2; | |
474 | frame->dwDefaultFrameInterval = | |
475 | min(frame->dwFrameInterval[n], | |
476 | max(frame->dwFrameInterval[0], | |
477 | frame->dwDefaultFrameInterval)); | |
478 | ||
479 | uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", | |
480 | frame->wWidth, frame->wHeight, | |
481 | 10000000/frame->dwDefaultFrameInterval, | |
482 | (100000000/frame->dwDefaultFrameInterval)%10); | |
483 | ||
078f8947 | 484 | format->nframes++; |
c0efd232 LP |
485 | buflen -= buffer[0]; |
486 | buffer += buffer[0]; | |
487 | } | |
488 | ||
c4ed8c66 LP |
489 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
490 | buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { | |
c0efd232 LP |
491 | buflen -= buffer[0]; |
492 | buffer += buffer[0]; | |
493 | } | |
494 | ||
c4ed8c66 LP |
495 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
496 | buffer[2] == UVC_VS_COLORFORMAT) { | |
c0efd232 | 497 | if (buflen < 6) { |
b2d9cc42 | 498 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
499 | "interface %d COLORFORMAT error\n", |
500 | dev->udev->devnum, | |
501 | alts->desc.bInterfaceNumber); | |
502 | return -EINVAL; | |
503 | } | |
504 | ||
505 | format->colorspace = uvc_colorspace(buffer[3]); | |
506 | ||
507 | buflen -= buffer[0]; | |
508 | buffer += buffer[0]; | |
509 | } | |
510 | ||
511 | return buffer - start; | |
512 | } | |
513 | ||
514 | static int uvc_parse_streaming(struct uvc_device *dev, | |
515 | struct usb_interface *intf) | |
516 | { | |
517 | struct uvc_streaming *streaming = NULL; | |
518 | struct uvc_format *format; | |
519 | struct uvc_frame *frame; | |
520 | struct usb_host_interface *alts = &intf->altsetting[0]; | |
521 | unsigned char *_buffer, *buffer = alts->extra; | |
522 | int _buflen, buflen = alts->extralen; | |
523 | unsigned int nformats = 0, nframes = 0, nintervals = 0; | |
524 | unsigned int size, i, n, p; | |
525 | __u32 *interval; | |
526 | __u16 psize; | |
527 | int ret = -EINVAL; | |
528 | ||
529 | if (intf->cur_altsetting->desc.bInterfaceSubClass | |
b482d923 | 530 | != UVC_SC_VIDEOSTREAMING) { |
c0efd232 LP |
531 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " |
532 | "video streaming interface\n", dev->udev->devnum, | |
533 | intf->altsetting[0].desc.bInterfaceNumber); | |
534 | return -EINVAL; | |
535 | } | |
536 | ||
537 | if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { | |
538 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " | |
539 | "claimed\n", dev->udev->devnum, | |
540 | intf->altsetting[0].desc.bInterfaceNumber); | |
541 | return -EINVAL; | |
542 | } | |
543 | ||
544 | streaming = kzalloc(sizeof *streaming, GFP_KERNEL); | |
545 | if (streaming == NULL) { | |
546 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
547 | return -EINVAL; | |
548 | } | |
549 | ||
550 | mutex_init(&streaming->mutex); | |
35f02a68 | 551 | streaming->dev = dev; |
c0efd232 LP |
552 | streaming->intf = usb_get_intf(intf); |
553 | streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
554 | ||
555 | /* The Pico iMage webcam has its class-specific interface descriptors | |
556 | * after the endpoint descriptors. | |
557 | */ | |
558 | if (buflen == 0) { | |
559 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
560 | struct usb_host_endpoint *ep = &alts->endpoint[i]; | |
561 | ||
562 | if (ep->extralen == 0) | |
563 | continue; | |
564 | ||
565 | if (ep->extralen > 2 && | |
566 | ep->extra[1] == USB_DT_CS_INTERFACE) { | |
567 | uvc_trace(UVC_TRACE_DESCR, "trying extra data " | |
568 | "from endpoint %u.\n", i); | |
569 | buffer = alts->endpoint[i].extra; | |
570 | buflen = alts->endpoint[i].extralen; | |
571 | break; | |
572 | } | |
573 | } | |
574 | } | |
575 | ||
576 | /* Skip the standard interface descriptors. */ | |
577 | while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { | |
578 | buflen -= buffer[0]; | |
579 | buffer += buffer[0]; | |
580 | } | |
581 | ||
582 | if (buflen <= 2) { | |
583 | uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " | |
584 | "interface descriptors found.\n"); | |
585 | goto error; | |
586 | } | |
587 | ||
588 | /* Parse the header descriptor. */ | |
ff924203 | 589 | switch (buffer[2]) { |
b482d923 | 590 | case UVC_VS_OUTPUT_HEADER: |
ff924203 LP |
591 | streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
592 | size = 9; | |
593 | break; | |
594 | ||
b482d923 | 595 | case UVC_VS_INPUT_HEADER: |
ff924203 LP |
596 | streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
597 | size = 13; | |
598 | break; | |
599 | ||
600 | default: | |
c0efd232 | 601 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
ff924203 LP |
602 | "%d HEADER descriptor not found.\n", dev->udev->devnum, |
603 | alts->desc.bInterfaceNumber); | |
c0efd232 | 604 | goto error; |
ff924203 | 605 | } |
c0efd232 | 606 | |
ff924203 LP |
607 | p = buflen >= 4 ? buffer[3] : 0; |
608 | n = buflen >= size ? buffer[size-1] : 0; | |
609 | ||
610 | if (buflen < size + p*n) { | |
611 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " | |
612 | "interface %d HEADER descriptor is invalid.\n", | |
613 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
614 | goto error; | |
615 | } | |
c0efd232 | 616 | |
ff924203 LP |
617 | streaming->header.bNumFormats = p; |
618 | streaming->header.bEndpointAddress = buffer[6]; | |
b482d923 | 619 | if (buffer[2] == UVC_VS_INPUT_HEADER) { |
c0efd232 LP |
620 | streaming->header.bmInfo = buffer[7]; |
621 | streaming->header.bTerminalLink = buffer[8]; | |
622 | streaming->header.bStillCaptureMethod = buffer[9]; | |
623 | streaming->header.bTriggerSupport = buffer[10]; | |
624 | streaming->header.bTriggerUsage = buffer[11]; | |
c0efd232 | 625 | } else { |
ff924203 LP |
626 | streaming->header.bTerminalLink = buffer[7]; |
627 | } | |
628 | streaming->header.bControlSize = n; | |
629 | ||
630 | streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL); | |
631 | if (streaming->header.bmaControls == NULL) { | |
632 | ret = -ENOMEM; | |
c0efd232 LP |
633 | goto error; |
634 | } | |
635 | ||
ff924203 LP |
636 | memcpy(streaming->header.bmaControls, &buffer[size], p*n); |
637 | ||
c0efd232 LP |
638 | buflen -= buffer[0]; |
639 | buffer += buffer[0]; | |
640 | ||
641 | _buffer = buffer; | |
642 | _buflen = buflen; | |
643 | ||
644 | /* Count the format and frame descriptors. */ | |
042e143e | 645 | while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 646 | switch (_buffer[2]) { |
b482d923 LP |
647 | case UVC_VS_FORMAT_UNCOMPRESSED: |
648 | case UVC_VS_FORMAT_MJPEG: | |
649 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
650 | nformats++; |
651 | break; | |
652 | ||
b482d923 | 653 | case UVC_VS_FORMAT_DV: |
c0efd232 LP |
654 | /* DV format has no frame descriptor. We will create a |
655 | * dummy frame descriptor with a dummy frame interval. | |
656 | */ | |
657 | nformats++; | |
658 | nframes++; | |
659 | nintervals++; | |
660 | break; | |
661 | ||
b482d923 LP |
662 | case UVC_VS_FORMAT_MPEG2TS: |
663 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
664 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
665 | "interface %d FORMAT %u is not supported.\n", | |
666 | dev->udev->devnum, | |
667 | alts->desc.bInterfaceNumber, _buffer[2]); | |
668 | break; | |
669 | ||
b482d923 LP |
670 | case UVC_VS_FRAME_UNCOMPRESSED: |
671 | case UVC_VS_FRAME_MJPEG: | |
c0efd232 LP |
672 | nframes++; |
673 | if (_buflen > 25) | |
674 | nintervals += _buffer[25] ? _buffer[25] : 3; | |
675 | break; | |
676 | ||
b482d923 | 677 | case UVC_VS_FRAME_FRAME_BASED: |
c0efd232 LP |
678 | nframes++; |
679 | if (_buflen > 21) | |
680 | nintervals += _buffer[21] ? _buffer[21] : 3; | |
681 | break; | |
682 | } | |
683 | ||
684 | _buflen -= _buffer[0]; | |
685 | _buffer += _buffer[0]; | |
686 | } | |
687 | ||
688 | if (nformats == 0) { | |
689 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
690 | "%d has no supported formats defined.\n", | |
691 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
692 | goto error; | |
693 | } | |
694 | ||
695 | size = nformats * sizeof *format + nframes * sizeof *frame | |
696 | + nintervals * sizeof *interval; | |
697 | format = kzalloc(size, GFP_KERNEL); | |
698 | if (format == NULL) { | |
699 | ret = -ENOMEM; | |
700 | goto error; | |
701 | } | |
702 | ||
703 | frame = (struct uvc_frame *)&format[nformats]; | |
704 | interval = (__u32 *)&frame[nframes]; | |
705 | ||
706 | streaming->format = format; | |
707 | streaming->nformats = nformats; | |
708 | ||
709 | /* Parse the format descriptors. */ | |
042e143e | 710 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 711 | switch (buffer[2]) { |
b482d923 LP |
712 | case UVC_VS_FORMAT_UNCOMPRESSED: |
713 | case UVC_VS_FORMAT_MJPEG: | |
714 | case UVC_VS_FORMAT_DV: | |
715 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
716 | format->frame = frame; |
717 | ret = uvc_parse_format(dev, streaming, format, | |
718 | &interval, buffer, buflen); | |
719 | if (ret < 0) | |
720 | goto error; | |
721 | ||
722 | frame += format->nframes; | |
723 | format++; | |
724 | ||
725 | buflen -= ret; | |
726 | buffer += ret; | |
727 | continue; | |
728 | ||
729 | default: | |
730 | break; | |
731 | } | |
732 | ||
733 | buflen -= buffer[0]; | |
734 | buffer += buffer[0]; | |
735 | } | |
736 | ||
c4ed8c66 LP |
737 | if (buflen) |
738 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
739 | "%d has %u bytes of trailing descriptor garbage.\n", | |
740 | dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); | |
741 | ||
c0efd232 LP |
742 | /* Parse the alternate settings to find the maximum bandwidth. */ |
743 | for (i = 0; i < intf->num_altsetting; ++i) { | |
744 | struct usb_host_endpoint *ep; | |
745 | alts = &intf->altsetting[i]; | |
746 | ep = uvc_find_endpoint(alts, | |
747 | streaming->header.bEndpointAddress); | |
748 | if (ep == NULL) | |
749 | continue; | |
750 | ||
751 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); | |
752 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
753 | if (psize > streaming->maxpsize) | |
754 | streaming->maxpsize = psize; | |
755 | } | |
756 | ||
35f02a68 | 757 | list_add_tail(&streaming->list, &dev->streams); |
c0efd232 LP |
758 | return 0; |
759 | ||
760 | error: | |
761 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
762 | usb_put_intf(intf); | |
763 | kfree(streaming->format); | |
764 | kfree(streaming->header.bmaControls); | |
765 | kfree(streaming); | |
766 | return ret; | |
767 | } | |
768 | ||
8ca5a639 LP |
769 | static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, |
770 | unsigned int num_pads, unsigned int extra_size) | |
771 | { | |
772 | struct uvc_entity *entity; | |
773 | unsigned int num_inputs; | |
774 | unsigned int size; | |
775 | ||
776 | num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; | |
777 | size = sizeof(*entity) + extra_size + num_inputs; | |
778 | entity = kzalloc(size, GFP_KERNEL); | |
779 | if (entity == NULL) | |
780 | return NULL; | |
781 | ||
782 | entity->id = id; | |
783 | entity->type = type; | |
784 | ||
785 | entity->bNrInPins = num_inputs; | |
786 | entity->baSourceID = ((__u8 *)entity) + sizeof(*entity) + extra_size; | |
787 | ||
788 | return entity; | |
789 | } | |
790 | ||
c0efd232 LP |
791 | /* Parse vendor-specific extensions. */ |
792 | static int uvc_parse_vendor_control(struct uvc_device *dev, | |
793 | const unsigned char *buffer, int buflen) | |
794 | { | |
795 | struct usb_device *udev = dev->udev; | |
796 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
797 | struct uvc_entity *unit; | |
798 | unsigned int n, p; | |
799 | int handled = 0; | |
800 | ||
801 | switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { | |
802 | case 0x046d: /* Logitech */ | |
803 | if (buffer[1] != 0x41 || buffer[2] != 0x01) | |
804 | break; | |
805 | ||
806 | /* Logitech implements several vendor specific functions | |
807 | * through vendor specific extension units (LXU). | |
808 | * | |
809 | * The LXU descriptors are similar to XU descriptors | |
810 | * (see "USB Device Video Class for Video Devices", section | |
811 | * 3.7.2.6 "Extension Unit Descriptor") with the following | |
812 | * differences: | |
813 | * | |
814 | * ---------------------------------------------------------- | |
815 | * 0 bLength 1 Number | |
816 | * Size of this descriptor, in bytes: 24+p+n*2 | |
817 | * ---------------------------------------------------------- | |
818 | * 23+p+n bmControlsType N Bitmap | |
819 | * Individual bits in the set are defined: | |
820 | * 0: Absolute | |
821 | * 1: Relative | |
822 | * | |
823 | * This bitset is mapped exactly the same as bmControls. | |
824 | * ---------------------------------------------------------- | |
825 | * 23+p+n*2 bReserved 1 Boolean | |
826 | * ---------------------------------------------------------- | |
827 | * 24+p+n*2 iExtension 1 Index | |
828 | * Index of a string descriptor that describes this | |
829 | * extension unit. | |
830 | * ---------------------------------------------------------- | |
831 | */ | |
832 | p = buflen >= 22 ? buffer[21] : 0; | |
833 | n = buflen >= 25 + p ? buffer[22+p] : 0; | |
834 | ||
835 | if (buflen < 25 + p + 2*n) { | |
836 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
837 | "interface %d EXTENSION_UNIT error\n", | |
838 | udev->devnum, alts->desc.bInterfaceNumber); | |
839 | break; | |
840 | } | |
841 | ||
8ca5a639 LP |
842 | unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], |
843 | p + 1, 2*n); | |
c0efd232 LP |
844 | if (unit == NULL) |
845 | return -ENOMEM; | |
846 | ||
c0efd232 LP |
847 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
848 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 849 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 850 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 LP |
851 | unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); |
852 | unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) | |
853 | + n; | |
c0efd232 LP |
854 | memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); |
855 | ||
856 | if (buffer[24+p+2*n] != 0) | |
857 | usb_string(udev, buffer[24+p+2*n], unit->name, | |
858 | sizeof unit->name); | |
859 | else | |
860 | sprintf(unit->name, "Extension %u", buffer[3]); | |
861 | ||
862 | list_add_tail(&unit->list, &dev->entities); | |
863 | handled = 1; | |
864 | break; | |
865 | } | |
866 | ||
867 | return handled; | |
868 | } | |
869 | ||
870 | static int uvc_parse_standard_control(struct uvc_device *dev, | |
871 | const unsigned char *buffer, int buflen) | |
872 | { | |
873 | struct usb_device *udev = dev->udev; | |
874 | struct uvc_entity *unit, *term; | |
875 | struct usb_interface *intf; | |
876 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
877 | unsigned int i, n, p, len; | |
878 | __u16 type; | |
879 | ||
880 | switch (buffer[2]) { | |
b482d923 | 881 | case UVC_VC_HEADER: |
c0efd232 LP |
882 | n = buflen >= 12 ? buffer[11] : 0; |
883 | ||
884 | if (buflen < 12 || buflen < 12 + n) { | |
885 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
886 | "interface %d HEADER error\n", udev->devnum, | |
887 | alts->desc.bInterfaceNumber); | |
888 | return -EINVAL; | |
889 | } | |
890 | ||
9bc6218d MH |
891 | dev->uvc_version = get_unaligned_le16(&buffer[3]); |
892 | dev->clock_frequency = get_unaligned_le32(&buffer[7]); | |
c0efd232 LP |
893 | |
894 | /* Parse all USB Video Streaming interfaces. */ | |
895 | for (i = 0; i < n; ++i) { | |
896 | intf = usb_ifnum_to_if(udev, buffer[12+i]); | |
897 | if (intf == NULL) { | |
898 | uvc_trace(UVC_TRACE_DESCR, "device %d " | |
899 | "interface %d doesn't exists\n", | |
900 | udev->devnum, i); | |
901 | continue; | |
902 | } | |
903 | ||
904 | uvc_parse_streaming(dev, intf); | |
905 | } | |
906 | break; | |
907 | ||
b482d923 | 908 | case UVC_VC_INPUT_TERMINAL: |
c0efd232 LP |
909 | if (buflen < 8) { |
910 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
911 | "interface %d INPUT_TERMINAL error\n", | |
912 | udev->devnum, alts->desc.bInterfaceNumber); | |
913 | return -EINVAL; | |
914 | } | |
915 | ||
916 | /* Make sure the terminal type MSB is not null, otherwise it | |
917 | * could be confused with a unit. | |
918 | */ | |
9bc6218d | 919 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
920 | if ((type & 0xff00) == 0) { |
921 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
922 | "interface %d INPUT_TERMINAL %d has invalid " | |
923 | "type 0x%04x, skipping\n", udev->devnum, | |
924 | alts->desc.bInterfaceNumber, | |
925 | buffer[3], type); | |
926 | return 0; | |
927 | } | |
928 | ||
929 | n = 0; | |
930 | p = 0; | |
931 | len = 8; | |
932 | ||
b482d923 | 933 | if (type == UVC_ITT_CAMERA) { |
c0efd232 LP |
934 | n = buflen >= 15 ? buffer[14] : 0; |
935 | len = 15; | |
936 | ||
b482d923 | 937 | } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
c0efd232 LP |
938 | n = buflen >= 9 ? buffer[8] : 0; |
939 | p = buflen >= 10 + n ? buffer[9+n] : 0; | |
940 | len = 10; | |
941 | } | |
942 | ||
943 | if (buflen < len + n + p) { | |
944 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
945 | "interface %d INPUT_TERMINAL error\n", | |
946 | udev->devnum, alts->desc.bInterfaceNumber); | |
947 | return -EINVAL; | |
948 | } | |
949 | ||
8ca5a639 LP |
950 | term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], |
951 | 1, n + p); | |
c0efd232 LP |
952 | if (term == NULL) |
953 | return -ENOMEM; | |
954 | ||
b482d923 | 955 | if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { |
c0efd232 LP |
956 | term->camera.bControlSize = n; |
957 | term->camera.bmControls = (__u8 *)term + sizeof *term; | |
958 | term->camera.wObjectiveFocalLengthMin = | |
9bc6218d | 959 | get_unaligned_le16(&buffer[8]); |
c0efd232 | 960 | term->camera.wObjectiveFocalLengthMax = |
9bc6218d | 961 | get_unaligned_le16(&buffer[10]); |
c0efd232 | 962 | term->camera.wOcularFocalLength = |
9bc6218d | 963 | get_unaligned_le16(&buffer[12]); |
c0efd232 | 964 | memcpy(term->camera.bmControls, &buffer[15], n); |
b482d923 LP |
965 | } else if (UVC_ENTITY_TYPE(term) == |
966 | UVC_ITT_MEDIA_TRANSPORT_INPUT) { | |
c0efd232 LP |
967 | term->media.bControlSize = n; |
968 | term->media.bmControls = (__u8 *)term + sizeof *term; | |
969 | term->media.bTransportModeSize = p; | |
970 | term->media.bmTransportModes = (__u8 *)term | |
971 | + sizeof *term + n; | |
972 | memcpy(term->media.bmControls, &buffer[9], n); | |
973 | memcpy(term->media.bmTransportModes, &buffer[10+n], p); | |
974 | } | |
975 | ||
976 | if (buffer[7] != 0) | |
977 | usb_string(udev, buffer[7], term->name, | |
978 | sizeof term->name); | |
b482d923 | 979 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) |
c0efd232 | 980 | sprintf(term->name, "Camera %u", buffer[3]); |
b482d923 | 981 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) |
c0efd232 LP |
982 | sprintf(term->name, "Media %u", buffer[3]); |
983 | else | |
984 | sprintf(term->name, "Input %u", buffer[3]); | |
985 | ||
986 | list_add_tail(&term->list, &dev->entities); | |
987 | break; | |
988 | ||
b482d923 | 989 | case UVC_VC_OUTPUT_TERMINAL: |
c0efd232 LP |
990 | if (buflen < 9) { |
991 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
992 | "interface %d OUTPUT_TERMINAL error\n", | |
993 | udev->devnum, alts->desc.bInterfaceNumber); | |
994 | return -EINVAL; | |
995 | } | |
996 | ||
997 | /* Make sure the terminal type MSB is not null, otherwise it | |
998 | * could be confused with a unit. | |
999 | */ | |
9bc6218d | 1000 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
1001 | if ((type & 0xff00) == 0) { |
1002 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1003 | "interface %d OUTPUT_TERMINAL %d has invalid " | |
1004 | "type 0x%04x, skipping\n", udev->devnum, | |
1005 | alts->desc.bInterfaceNumber, buffer[3], type); | |
1006 | return 0; | |
1007 | } | |
1008 | ||
8ca5a639 LP |
1009 | term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], |
1010 | 1, 0); | |
c0efd232 LP |
1011 | if (term == NULL) |
1012 | return -ENOMEM; | |
1013 | ||
8ca5a639 | 1014 | memcpy(term->baSourceID, &buffer[7], 1); |
c0efd232 LP |
1015 | |
1016 | if (buffer[8] != 0) | |
1017 | usb_string(udev, buffer[8], term->name, | |
1018 | sizeof term->name); | |
1019 | else | |
1020 | sprintf(term->name, "Output %u", buffer[3]); | |
1021 | ||
1022 | list_add_tail(&term->list, &dev->entities); | |
1023 | break; | |
1024 | ||
b482d923 | 1025 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1026 | p = buflen >= 5 ? buffer[4] : 0; |
1027 | ||
1028 | if (buflen < 5 || buflen < 6 + p) { | |
1029 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1030 | "interface %d SELECTOR_UNIT error\n", | |
1031 | udev->devnum, alts->desc.bInterfaceNumber); | |
1032 | return -EINVAL; | |
1033 | } | |
1034 | ||
8ca5a639 | 1035 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); |
c0efd232 LP |
1036 | if (unit == NULL) |
1037 | return -ENOMEM; | |
1038 | ||
8ca5a639 | 1039 | memcpy(unit->baSourceID, &buffer[5], p); |
c0efd232 LP |
1040 | |
1041 | if (buffer[5+p] != 0) | |
1042 | usb_string(udev, buffer[5+p], unit->name, | |
1043 | sizeof unit->name); | |
1044 | else | |
1045 | sprintf(unit->name, "Selector %u", buffer[3]); | |
1046 | ||
1047 | list_add_tail(&unit->list, &dev->entities); | |
1048 | break; | |
1049 | ||
b482d923 | 1050 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1051 | n = buflen >= 8 ? buffer[7] : 0; |
1052 | p = dev->uvc_version >= 0x0110 ? 10 : 9; | |
1053 | ||
1054 | if (buflen < p + n) { | |
1055 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1056 | "interface %d PROCESSING_UNIT error\n", | |
1057 | udev->devnum, alts->desc.bInterfaceNumber); | |
1058 | return -EINVAL; | |
1059 | } | |
1060 | ||
8ca5a639 | 1061 | unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); |
c0efd232 LP |
1062 | if (unit == NULL) |
1063 | return -ENOMEM; | |
1064 | ||
8ca5a639 | 1065 | memcpy(unit->baSourceID, &buffer[4], 1); |
c0efd232 | 1066 | unit->processing.wMaxMultiplier = |
9bc6218d | 1067 | get_unaligned_le16(&buffer[5]); |
c0efd232 LP |
1068 | unit->processing.bControlSize = buffer[7]; |
1069 | unit->processing.bmControls = (__u8 *)unit + sizeof *unit; | |
1070 | memcpy(unit->processing.bmControls, &buffer[8], n); | |
1071 | if (dev->uvc_version >= 0x0110) | |
1072 | unit->processing.bmVideoStandards = buffer[9+n]; | |
1073 | ||
1074 | if (buffer[8+n] != 0) | |
1075 | usb_string(udev, buffer[8+n], unit->name, | |
1076 | sizeof unit->name); | |
1077 | else | |
1078 | sprintf(unit->name, "Processing %u", buffer[3]); | |
1079 | ||
1080 | list_add_tail(&unit->list, &dev->entities); | |
1081 | break; | |
1082 | ||
b482d923 | 1083 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1084 | p = buflen >= 22 ? buffer[21] : 0; |
1085 | n = buflen >= 24 + p ? buffer[22+p] : 0; | |
1086 | ||
1087 | if (buflen < 24 + p + n) { | |
1088 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1089 | "interface %d EXTENSION_UNIT error\n", | |
1090 | udev->devnum, alts->desc.bInterfaceNumber); | |
1091 | return -EINVAL; | |
1092 | } | |
1093 | ||
8ca5a639 | 1094 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); |
c0efd232 LP |
1095 | if (unit == NULL) |
1096 | return -ENOMEM; | |
1097 | ||
c0efd232 LP |
1098 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
1099 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 1100 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 1101 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 | 1102 | unit->extension.bmControls = (__u8 *)unit + sizeof *unit; |
c0efd232 LP |
1103 | memcpy(unit->extension.bmControls, &buffer[23+p], n); |
1104 | ||
1105 | if (buffer[23+p+n] != 0) | |
1106 | usb_string(udev, buffer[23+p+n], unit->name, | |
1107 | sizeof unit->name); | |
1108 | else | |
1109 | sprintf(unit->name, "Extension %u", buffer[3]); | |
1110 | ||
1111 | list_add_tail(&unit->list, &dev->entities); | |
1112 | break; | |
1113 | ||
1114 | default: | |
1115 | uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " | |
1116 | "descriptor (%u)\n", buffer[2]); | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | static int uvc_parse_control(struct uvc_device *dev) | |
1124 | { | |
1125 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
1126 | unsigned char *buffer = alts->extra; | |
1127 | int buflen = alts->extralen; | |
1128 | int ret; | |
1129 | ||
1130 | /* Parse the default alternate setting only, as the UVC specification | |
1131 | * defines a single alternate setting, the default alternate setting | |
1132 | * zero. | |
1133 | */ | |
1134 | ||
1135 | while (buflen > 2) { | |
1136 | if (uvc_parse_vendor_control(dev, buffer, buflen) || | |
1137 | buffer[1] != USB_DT_CS_INTERFACE) | |
1138 | goto next_descriptor; | |
1139 | ||
1140 | if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) | |
1141 | return ret; | |
1142 | ||
1143 | next_descriptor: | |
1144 | buflen -= buffer[0]; | |
1145 | buffer += buffer[0]; | |
1146 | } | |
1147 | ||
538e7a00 LP |
1148 | /* Check if the optional status endpoint is present. Built-in iSight |
1149 | * webcams have an interrupt endpoint but spit proprietary data that | |
1150 | * don't conform to the UVC status endpoint messages. Don't try to | |
1151 | * handle the interrupt endpoint for those cameras. | |
1152 | */ | |
1153 | if (alts->desc.bNumEndpoints == 1 && | |
1154 | !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { | |
c0efd232 LP |
1155 | struct usb_host_endpoint *ep = &alts->endpoint[0]; |
1156 | struct usb_endpoint_descriptor *desc = &ep->desc; | |
1157 | ||
1158 | if (usb_endpoint_is_int_in(desc) && | |
1159 | le16_to_cpu(desc->wMaxPacketSize) >= 8 && | |
1160 | desc->bInterval != 0) { | |
1161 | uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " | |
1162 | "(addr %02x).\n", desc->bEndpointAddress); | |
1163 | dev->int_ep = ep; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | /* ------------------------------------------------------------------------ | |
8e113595 | 1171 | * UVC device scan |
c0efd232 LP |
1172 | */ |
1173 | ||
c0efd232 LP |
1174 | /* |
1175 | * Scan the UVC descriptors to locate a chain starting at an Output Terminal | |
1176 | * and containing the following units: | |
1177 | * | |
8e113595 | 1178 | * - one or more Output Terminals (USB Streaming or Display) |
c0efd232 | 1179 | * - zero or one Processing Unit |
8e113595 | 1180 | * - zero, one or more single-input Selector Units |
c0efd232 LP |
1181 | * - zero or one multiple-input Selector Units, provided all inputs are |
1182 | * connected to input terminals | |
1183 | * - zero, one or mode single-input Extension Units | |
2c2d264b | 1184 | * - one or more Input Terminals (Camera, External or USB Streaming) |
c0efd232 | 1185 | * |
8e113595 LP |
1186 | * The terminal and units must match on of the following structures: |
1187 | * | |
1188 | * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) | |
1189 | * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... | |
1190 | * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) | |
1191 | * | |
1192 | * +---------+ +---------+ -> OTT_*(0) | |
1193 | * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... | |
1194 | * +---------+ +---------+ -> OTT_*(n) | |
1195 | * | |
1196 | * The Processing Unit and Extension Units can be in any order. Additional | |
1197 | * Extension Units connected to the main chain as single-unit branches are | |
1198 | * also supported. Single-input Selector Units are ignored. | |
c0efd232 | 1199 | */ |
8e113595 | 1200 | static int uvc_scan_chain_entity(struct uvc_video_chain *chain, |
c0efd232 LP |
1201 | struct uvc_entity *entity) |
1202 | { | |
1203 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1204 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1205 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1206 | printk(" <- XU %d", entity->id); | |
1207 | ||
8ca5a639 | 1208 | if (entity->bNrInPins != 1) { |
c0efd232 LP |
1209 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " |
1210 | "than 1 input pin.\n", entity->id); | |
1211 | return -1; | |
1212 | } | |
1213 | ||
c0efd232 LP |
1214 | break; |
1215 | ||
b482d923 | 1216 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1217 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1218 | printk(" <- PU %d", entity->id); | |
1219 | ||
8e113595 | 1220 | if (chain->processing != NULL) { |
c0efd232 LP |
1221 | uvc_trace(UVC_TRACE_DESCR, "Found multiple " |
1222 | "Processing Units in chain.\n"); | |
1223 | return -1; | |
1224 | } | |
1225 | ||
8e113595 | 1226 | chain->processing = entity; |
c0efd232 LP |
1227 | break; |
1228 | ||
b482d923 | 1229 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1230 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1231 | printk(" <- SU %d", entity->id); | |
1232 | ||
1233 | /* Single-input selector units are ignored. */ | |
8ca5a639 | 1234 | if (entity->bNrInPins == 1) |
c0efd232 LP |
1235 | break; |
1236 | ||
8e113595 | 1237 | if (chain->selector != NULL) { |
c0efd232 LP |
1238 | uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " |
1239 | "Units in chain.\n"); | |
1240 | return -1; | |
1241 | } | |
1242 | ||
8e113595 | 1243 | chain->selector = entity; |
c0efd232 LP |
1244 | break; |
1245 | ||
b482d923 LP |
1246 | case UVC_ITT_VENDOR_SPECIFIC: |
1247 | case UVC_ITT_CAMERA: | |
1248 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
c0efd232 LP |
1249 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1250 | printk(" <- IT %d\n", entity->id); | |
1251 | ||
c0efd232 LP |
1252 | break; |
1253 | ||
b482d923 | 1254 | case UVC_TT_STREAMING: |
4057ac6c LP |
1255 | if (UVC_ENTITY_IS_ITERM(entity)) { |
1256 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1257 | printk(" <- IT %d\n", entity->id); | |
1258 | } else { | |
1259 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1260 | printk(" OT %d", entity->id); | |
ff924203 LP |
1261 | } |
1262 | ||
ff924203 LP |
1263 | break; |
1264 | ||
c0efd232 LP |
1265 | default: |
1266 | uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " | |
1267 | "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); | |
1268 | return -1; | |
1269 | } | |
1270 | ||
6241d8ca | 1271 | list_add_tail(&entity->chain, &chain->entities); |
c0efd232 LP |
1272 | return 0; |
1273 | } | |
1274 | ||
8e113595 | 1275 | static int uvc_scan_chain_forward(struct uvc_video_chain *chain, |
c0efd232 LP |
1276 | struct uvc_entity *entity, struct uvc_entity *prev) |
1277 | { | |
1278 | struct uvc_entity *forward; | |
1279 | int found; | |
1280 | ||
1281 | /* Forward scan */ | |
1282 | forward = NULL; | |
1283 | found = 0; | |
1284 | ||
1285 | while (1) { | |
8e113595 | 1286 | forward = uvc_entity_by_reference(chain->dev, entity->id, |
c0efd232 LP |
1287 | forward); |
1288 | if (forward == NULL) | |
1289 | break; | |
8e113595 | 1290 | if (forward == prev) |
c0efd232 LP |
1291 | continue; |
1292 | ||
8e113595 LP |
1293 | switch (UVC_ENTITY_TYPE(forward)) { |
1294 | case UVC_VC_EXTENSION_UNIT: | |
8ca5a639 | 1295 | if (forward->bNrInPins != 1) { |
8e113595 LP |
1296 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " |
1297 | "has more than 1 input pin.\n", | |
1298 | entity->id); | |
1299 | return -EINVAL; | |
1300 | } | |
c0efd232 | 1301 | |
6241d8ca | 1302 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1303 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1304 | if (!found) | |
1305 | printk(" (->"); | |
1306 | ||
1307 | printk(" XU %d", forward->id); | |
1308 | found = 1; | |
1309 | } | |
1310 | break; | |
1311 | ||
1312 | case UVC_OTT_VENDOR_SPECIFIC: | |
1313 | case UVC_OTT_DISPLAY: | |
1314 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1315 | case UVC_TT_STREAMING: | |
1316 | if (UVC_ENTITY_IS_ITERM(forward)) { | |
1317 | uvc_trace(UVC_TRACE_DESCR, "Unsupported input " | |
1318 | "terminal %u.\n", forward->id); | |
1319 | return -EINVAL; | |
1320 | } | |
c0efd232 | 1321 | |
6241d8ca | 1322 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1323 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1324 | if (!found) | |
1325 | printk(" (->"); | |
1326 | ||
1327 | printk(" OT %d", forward->id); | |
1328 | found = 1; | |
1329 | } | |
1330 | break; | |
c0efd232 LP |
1331 | } |
1332 | } | |
1333 | if (found) | |
1334 | printk(")"); | |
1335 | ||
1336 | return 0; | |
1337 | } | |
1338 | ||
8e113595 | 1339 | static int uvc_scan_chain_backward(struct uvc_video_chain *chain, |
4057ac6c | 1340 | struct uvc_entity **_entity) |
c0efd232 | 1341 | { |
4057ac6c | 1342 | struct uvc_entity *entity = *_entity; |
c0efd232 | 1343 | struct uvc_entity *term; |
4057ac6c | 1344 | int id = -EINVAL, i; |
c0efd232 LP |
1345 | |
1346 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1347 | case UVC_VC_EXTENSION_UNIT: |
b482d923 | 1348 | case UVC_VC_PROCESSING_UNIT: |
8ca5a639 | 1349 | id = entity->baSourceID[0]; |
c0efd232 LP |
1350 | break; |
1351 | ||
b482d923 | 1352 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 | 1353 | /* Single-input selector units are ignored. */ |
8ca5a639 LP |
1354 | if (entity->bNrInPins == 1) { |
1355 | id = entity->baSourceID[0]; | |
c0efd232 LP |
1356 | break; |
1357 | } | |
1358 | ||
1359 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1360 | printk(" <- IT"); | |
1361 | ||
8e113595 | 1362 | chain->selector = entity; |
8ca5a639 LP |
1363 | for (i = 0; i < entity->bNrInPins; ++i) { |
1364 | id = entity->baSourceID[i]; | |
8e113595 | 1365 | term = uvc_entity_by_id(chain->dev, id); |
c0efd232 LP |
1366 | if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { |
1367 | uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " | |
1368 | "input %d isn't connected to an " | |
1369 | "input terminal\n", entity->id, i); | |
1370 | return -1; | |
1371 | } | |
1372 | ||
1373 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1374 | printk(" %d", term->id); | |
1375 | ||
6241d8ca | 1376 | list_add_tail(&term->chain, &chain->entities); |
8e113595 | 1377 | uvc_scan_chain_forward(chain, term, entity); |
c0efd232 LP |
1378 | } |
1379 | ||
1380 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1381 | printk("\n"); | |
1382 | ||
1383 | id = 0; | |
1384 | break; | |
4057ac6c LP |
1385 | |
1386 | case UVC_ITT_VENDOR_SPECIFIC: | |
1387 | case UVC_ITT_CAMERA: | |
1388 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
1389 | case UVC_OTT_VENDOR_SPECIFIC: | |
1390 | case UVC_OTT_DISPLAY: | |
1391 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1392 | case UVC_TT_STREAMING: | |
8ca5a639 | 1393 | id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; |
4057ac6c | 1394 | break; |
c0efd232 LP |
1395 | } |
1396 | ||
4057ac6c LP |
1397 | if (id <= 0) { |
1398 | *_entity = NULL; | |
1399 | return id; | |
1400 | } | |
1401 | ||
1402 | entity = uvc_entity_by_id(chain->dev, id); | |
1403 | if (entity == NULL) { | |
1404 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
1405 | "unknown entity %d.\n", id); | |
1406 | return -EINVAL; | |
1407 | } | |
1408 | ||
1409 | *_entity = entity; | |
1410 | return 0; | |
c0efd232 LP |
1411 | } |
1412 | ||
8e113595 | 1413 | static int uvc_scan_chain(struct uvc_video_chain *chain, |
4057ac6c | 1414 | struct uvc_entity *term) |
c0efd232 LP |
1415 | { |
1416 | struct uvc_entity *entity, *prev; | |
c0efd232 | 1417 | |
4057ac6c | 1418 | uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); |
ff924203 | 1419 | |
4057ac6c LP |
1420 | entity = term; |
1421 | prev = NULL; | |
8e113595 | 1422 | |
4057ac6c LP |
1423 | while (entity != NULL) { |
1424 | /* Entity must not be part of an existing chain */ | |
8e113595 LP |
1425 | if (entity->chain.next || entity->chain.prev) { |
1426 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
4057ac6c | 1427 | "entity %d already in chain.\n", entity->id); |
8e113595 | 1428 | return -EINVAL; |
c0efd232 LP |
1429 | } |
1430 | ||
1431 | /* Process entity */ | |
8e113595 LP |
1432 | if (uvc_scan_chain_entity(chain, entity) < 0) |
1433 | return -EINVAL; | |
c0efd232 LP |
1434 | |
1435 | /* Forward scan */ | |
8e113595 LP |
1436 | if (uvc_scan_chain_forward(chain, entity, prev) < 0) |
1437 | return -EINVAL; | |
c0efd232 | 1438 | |
c0efd232 | 1439 | /* Backward scan */ |
4057ac6c LP |
1440 | prev = entity; |
1441 | if (uvc_scan_chain_backward(chain, &entity) < 0) | |
1442 | return -EINVAL; | |
c0efd232 LP |
1443 | } |
1444 | ||
8e113595 LP |
1445 | return 0; |
1446 | } | |
1447 | ||
6241d8ca LP |
1448 | static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, |
1449 | char *buffer) | |
8e113595 LP |
1450 | { |
1451 | struct uvc_entity *term; | |
1452 | unsigned int nterms = 0; | |
1453 | char *p = buffer; | |
1454 | ||
1455 | list_for_each_entry(term, terms, chain) { | |
6241d8ca LP |
1456 | if (!UVC_ENTITY_IS_TERM(term) || |
1457 | UVC_TERM_DIRECTION(term) != dir) | |
1458 | continue; | |
1459 | ||
1460 | if (nterms) | |
8e113595 | 1461 | p += sprintf(p, ","); |
6241d8ca LP |
1462 | if (++nterms >= 4) { |
1463 | p += sprintf(p, "..."); | |
1464 | break; | |
8e113595 | 1465 | } |
6241d8ca | 1466 | p += sprintf(p, "%u", term->id); |
ff924203 | 1467 | } |
c0efd232 | 1468 | |
8e113595 LP |
1469 | return p - buffer; |
1470 | } | |
1471 | ||
1472 | static const char *uvc_print_chain(struct uvc_video_chain *chain) | |
1473 | { | |
1474 | static char buffer[43]; | |
1475 | char *p = buffer; | |
1476 | ||
6241d8ca | 1477 | p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); |
8e113595 | 1478 | p += sprintf(p, " -> "); |
6241d8ca | 1479 | uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); |
8e113595 LP |
1480 | |
1481 | return buffer; | |
c0efd232 LP |
1482 | } |
1483 | ||
1484 | /* | |
35f02a68 | 1485 | * Scan the device for video chains and register video devices. |
c0efd232 | 1486 | * |
8e113595 | 1487 | * Chains are scanned starting at their output terminals and walked backwards. |
c0efd232 | 1488 | */ |
35f02a68 | 1489 | static int uvc_scan_device(struct uvc_device *dev) |
c0efd232 | 1490 | { |
8e113595 | 1491 | struct uvc_video_chain *chain; |
c0efd232 | 1492 | struct uvc_entity *term; |
c0efd232 | 1493 | |
c0efd232 | 1494 | list_for_each_entry(term, &dev->entities, list) { |
8e113595 | 1495 | if (!UVC_ENTITY_IS_OTERM(term)) |
c0efd232 LP |
1496 | continue; |
1497 | ||
8e113595 LP |
1498 | /* If the terminal is already included in a chain, skip it. |
1499 | * This can happen for chains that have multiple output | |
1500 | * terminals, where all output terminals beside the first one | |
1501 | * will be inserted in the chain in forward scans. | |
1502 | */ | |
1503 | if (term->chain.next || term->chain.prev) | |
c0efd232 LP |
1504 | continue; |
1505 | ||
8e113595 LP |
1506 | chain = kzalloc(sizeof(*chain), GFP_KERNEL); |
1507 | if (chain == NULL) | |
1508 | return -ENOMEM; | |
1509 | ||
6241d8ca | 1510 | INIT_LIST_HEAD(&chain->entities); |
8e113595 LP |
1511 | mutex_init(&chain->ctrl_mutex); |
1512 | chain->dev = dev; | |
1513 | ||
1514 | if (uvc_scan_chain(chain, term) < 0) { | |
1515 | kfree(chain); | |
1516 | continue; | |
c0efd232 | 1517 | } |
8e113595 LP |
1518 | |
1519 | uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", | |
1520 | uvc_print_chain(chain)); | |
1521 | ||
1522 | list_add_tail(&chain->list, &dev->chains); | |
c0efd232 LP |
1523 | } |
1524 | ||
8e113595 | 1525 | if (list_empty(&dev->chains)) { |
c0efd232 LP |
1526 | uvc_printk(KERN_INFO, "No valid video chain found.\n"); |
1527 | return -1; | |
1528 | } | |
1529 | ||
c0efd232 LP |
1530 | return 0; |
1531 | } | |
1532 | ||
8e113595 LP |
1533 | /* ------------------------------------------------------------------------ |
1534 | * Video device registration and unregistration | |
1535 | */ | |
1536 | ||
716fdee1 LP |
1537 | /* |
1538 | * Delete the UVC device. | |
1539 | * | |
1540 | * Called by the kernel when the last reference to the uvc_device structure | |
1541 | * is released. | |
1542 | * | |
1543 | * As this function is called after or during disconnect(), all URBs have | |
1544 | * already been canceled by the USB core. There is no need to kill the | |
1545 | * interrupt URB manually. | |
1546 | */ | |
1547 | static void uvc_delete(struct uvc_device *dev) | |
1548 | { | |
1549 | struct list_head *p, *n; | |
1550 | ||
1551 | usb_put_intf(dev->intf); | |
1552 | usb_put_dev(dev->udev); | |
1553 | ||
1554 | uvc_status_cleanup(dev); | |
1555 | uvc_ctrl_cleanup_device(dev); | |
1556 | ||
1557 | list_for_each_safe(p, n, &dev->chains) { | |
1558 | struct uvc_video_chain *chain; | |
1559 | chain = list_entry(p, struct uvc_video_chain, list); | |
1560 | kfree(chain); | |
1561 | } | |
1562 | ||
1563 | list_for_each_safe(p, n, &dev->entities) { | |
1564 | struct uvc_entity *entity; | |
1565 | entity = list_entry(p, struct uvc_entity, list); | |
1566 | kfree(entity); | |
1567 | } | |
1568 | ||
1569 | list_for_each_safe(p, n, &dev->streams) { | |
1570 | struct uvc_streaming *streaming; | |
1571 | streaming = list_entry(p, struct uvc_streaming, list); | |
1572 | usb_driver_release_interface(&uvc_driver.driver, | |
1573 | streaming->intf); | |
1574 | usb_put_intf(streaming->intf); | |
1575 | kfree(streaming->format); | |
1576 | kfree(streaming->header.bmaControls); | |
1577 | kfree(streaming); | |
1578 | } | |
1579 | ||
1580 | kfree(dev); | |
1581 | } | |
1582 | ||
1583 | static void uvc_release(struct video_device *vdev) | |
1584 | { | |
1585 | struct uvc_streaming *stream = video_get_drvdata(vdev); | |
1586 | struct uvc_device *dev = stream->dev; | |
1587 | ||
1588 | video_device_release(vdev); | |
1589 | ||
1590 | /* Decrement the registered streams count and delete the device when it | |
1591 | * reaches zero. | |
1592 | */ | |
1593 | if (atomic_dec_and_test(&dev->nstreams)) | |
1594 | uvc_delete(dev); | |
1595 | } | |
1596 | ||
8e113595 LP |
1597 | /* |
1598 | * Unregister the video devices. | |
1599 | */ | |
1600 | static void uvc_unregister_video(struct uvc_device *dev) | |
1601 | { | |
1602 | struct uvc_streaming *stream; | |
1603 | ||
716fdee1 LP |
1604 | /* Unregistering all video devices might result in uvc_delete() being |
1605 | * called from inside the loop if there's no open file handle. To avoid | |
1606 | * that, increment the stream count before iterating over the streams | |
1607 | * and decrement it when done. | |
1608 | */ | |
1609 | atomic_inc(&dev->nstreams); | |
1610 | ||
8e113595 LP |
1611 | list_for_each_entry(stream, &dev->streams, list) { |
1612 | if (stream->vdev == NULL) | |
1613 | continue; | |
1614 | ||
716fdee1 | 1615 | video_unregister_device(stream->vdev); |
8e113595 LP |
1616 | stream->vdev = NULL; |
1617 | } | |
716fdee1 LP |
1618 | |
1619 | /* Decrement the stream count and call uvc_delete explicitly if there | |
1620 | * are no stream left. | |
1621 | */ | |
1622 | if (atomic_dec_and_test(&dev->nstreams)) | |
1623 | uvc_delete(dev); | |
8e113595 LP |
1624 | } |
1625 | ||
1626 | static int uvc_register_video(struct uvc_device *dev, | |
1627 | struct uvc_streaming *stream) | |
1628 | { | |
1629 | struct video_device *vdev; | |
1630 | int ret; | |
1631 | ||
1632 | /* Initialize the streaming interface with default streaming | |
1633 | * parameters. | |
1634 | */ | |
1635 | ret = uvc_video_init(stream); | |
1636 | if (ret < 0) { | |
1637 | uvc_printk(KERN_ERR, "Failed to initialize the device " | |
1638 | "(%d).\n", ret); | |
1639 | return ret; | |
1640 | } | |
1641 | ||
1642 | /* Register the device with V4L. */ | |
1643 | vdev = video_device_alloc(); | |
1644 | if (vdev == NULL) { | |
1645 | uvc_printk(KERN_ERR, "Failed to allocate video device (%d).\n", | |
1646 | ret); | |
1647 | return -ENOMEM; | |
1648 | } | |
1649 | ||
1650 | /* We already hold a reference to dev->udev. The video device will be | |
1651 | * unregistered before the reference is released, so we don't need to | |
1652 | * get another one. | |
1653 | */ | |
1654 | vdev->parent = &dev->intf->dev; | |
8e113595 | 1655 | vdev->fops = &uvc_fops; |
716fdee1 | 1656 | vdev->release = uvc_release; |
8e113595 LP |
1657 | strlcpy(vdev->name, dev->name, sizeof vdev->name); |
1658 | ||
1659 | /* Set the driver data before calling video_register_device, otherwise | |
1660 | * uvc_v4l2_open might race us. | |
1661 | */ | |
1662 | stream->vdev = vdev; | |
1663 | video_set_drvdata(vdev, stream); | |
1664 | ||
1665 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1666 | if (ret < 0) { | |
1667 | uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", | |
1668 | ret); | |
1669 | stream->vdev = NULL; | |
1670 | video_device_release(vdev); | |
1671 | return ret; | |
1672 | } | |
1673 | ||
716fdee1 | 1674 | atomic_inc(&dev->nstreams); |
8e113595 LP |
1675 | return 0; |
1676 | } | |
1677 | ||
1678 | /* | |
1679 | * Register all video devices in all chains. | |
1680 | */ | |
1681 | static int uvc_register_terms(struct uvc_device *dev, | |
6241d8ca | 1682 | struct uvc_video_chain *chain) |
8e113595 LP |
1683 | { |
1684 | struct uvc_streaming *stream; | |
1685 | struct uvc_entity *term; | |
1686 | int ret; | |
1687 | ||
6241d8ca | 1688 | list_for_each_entry(term, &chain->entities, chain) { |
8e113595 LP |
1689 | if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) |
1690 | continue; | |
1691 | ||
1692 | stream = uvc_stream_by_id(dev, term->id); | |
1693 | if (stream == NULL) { | |
1694 | uvc_printk(KERN_INFO, "No streaming interface found " | |
1695 | "for terminal %u.", term->id); | |
1696 | continue; | |
1697 | } | |
1698 | ||
1699 | stream->chain = chain; | |
1700 | ret = uvc_register_video(dev, stream); | |
1701 | if (ret < 0) | |
1702 | return ret; | |
1703 | } | |
1704 | ||
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | static int uvc_register_chains(struct uvc_device *dev) | |
1709 | { | |
1710 | struct uvc_video_chain *chain; | |
1711 | int ret; | |
1712 | ||
1713 | list_for_each_entry(chain, &dev->chains, list) { | |
6241d8ca | 1714 | ret = uvc_register_terms(dev, chain); |
8e113595 LP |
1715 | if (ret < 0) |
1716 | return ret; | |
1717 | } | |
1718 | ||
1719 | return 0; | |
1720 | } | |
1721 | ||
1722 | /* ------------------------------------------------------------------------ | |
1723 | * USB probe, disconnect, suspend and resume | |
1724 | */ | |
1725 | ||
c0efd232 LP |
1726 | static int uvc_probe(struct usb_interface *intf, |
1727 | const struct usb_device_id *id) | |
1728 | { | |
1729 | struct usb_device *udev = interface_to_usbdev(intf); | |
1730 | struct uvc_device *dev; | |
1731 | int ret; | |
1732 | ||
1733 | if (id->idVendor && id->idProduct) | |
1734 | uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " | |
1735 | "(%04x:%04x)\n", udev->devpath, id->idVendor, | |
1736 | id->idProduct); | |
1737 | else | |
1738 | uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", | |
1739 | udev->devpath); | |
1740 | ||
2c2d264b | 1741 | /* Allocate memory for the device and initialize it. */ |
c0efd232 LP |
1742 | if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) |
1743 | return -ENOMEM; | |
1744 | ||
1745 | INIT_LIST_HEAD(&dev->entities); | |
8e113595 | 1746 | INIT_LIST_HEAD(&dev->chains); |
35f02a68 | 1747 | INIT_LIST_HEAD(&dev->streams); |
716fdee1 | 1748 | atomic_set(&dev->nstreams, 0); |
04a37e0f | 1749 | atomic_set(&dev->users, 0); |
c0efd232 LP |
1750 | |
1751 | dev->udev = usb_get_dev(udev); | |
1752 | dev->intf = usb_get_intf(intf); | |
1753 | dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
1754 | dev->quirks = id->driver_info | uvc_quirks_param; | |
1755 | ||
1756 | if (udev->product != NULL) | |
d0ebf307 | 1757 | strlcpy(dev->name, udev->product, sizeof dev->name); |
c0efd232 LP |
1758 | else |
1759 | snprintf(dev->name, sizeof dev->name, | |
1760 | "UVC Camera (%04x:%04x)", | |
1761 | le16_to_cpu(udev->descriptor.idVendor), | |
1762 | le16_to_cpu(udev->descriptor.idProduct)); | |
1763 | ||
2c2d264b | 1764 | /* Parse the Video Class control descriptor. */ |
c0efd232 LP |
1765 | if (uvc_parse_control(dev) < 0) { |
1766 | uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " | |
1767 | "descriptors.\n"); | |
1768 | goto error; | |
1769 | } | |
1770 | ||
fba4578e | 1771 | uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", |
c0efd232 LP |
1772 | dev->uvc_version >> 8, dev->uvc_version & 0xff, |
1773 | udev->product ? udev->product : "<unnamed>", | |
1774 | le16_to_cpu(udev->descriptor.idVendor), | |
1775 | le16_to_cpu(udev->descriptor.idProduct)); | |
1776 | ||
1777 | if (uvc_quirks_param != 0) { | |
1778 | uvc_printk(KERN_INFO, "Forcing device quirks 0x%x by module " | |
1779 | "parameter for testing purpose.\n", uvc_quirks_param); | |
1780 | uvc_printk(KERN_INFO, "Please report required quirks to the " | |
1781 | "linux-uvc-devel mailing list.\n"); | |
1782 | } | |
1783 | ||
2c2d264b | 1784 | /* Initialize controls. */ |
c0efd232 LP |
1785 | if (uvc_ctrl_init_device(dev) < 0) |
1786 | goto error; | |
1787 | ||
8e113595 | 1788 | /* Scan the device for video chains. */ |
35f02a68 | 1789 | if (uvc_scan_device(dev) < 0) |
c0efd232 LP |
1790 | goto error; |
1791 | ||
8e113595 LP |
1792 | /* Register video devices. */ |
1793 | if (uvc_register_chains(dev) < 0) | |
1794 | goto error; | |
1795 | ||
2c2d264b | 1796 | /* Save our data pointer in the interface data. */ |
c0efd232 LP |
1797 | usb_set_intfdata(intf, dev); |
1798 | ||
2c2d264b | 1799 | /* Initialize the interrupt URB. */ |
c0efd232 LP |
1800 | if ((ret = uvc_status_init(dev)) < 0) { |
1801 | uvc_printk(KERN_INFO, "Unable to initialize the status " | |
1802 | "endpoint (%d), status interrupt will not be " | |
1803 | "supported.\n", ret); | |
1804 | } | |
1805 | ||
1806 | uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); | |
1807 | return 0; | |
1808 | ||
1809 | error: | |
716fdee1 | 1810 | uvc_unregister_video(dev); |
c0efd232 LP |
1811 | return -ENODEV; |
1812 | } | |
1813 | ||
1814 | static void uvc_disconnect(struct usb_interface *intf) | |
1815 | { | |
1816 | struct uvc_device *dev = usb_get_intfdata(intf); | |
1817 | ||
1818 | /* Set the USB interface data to NULL. This can be done outside the | |
1819 | * lock, as there's no other reader. | |
1820 | */ | |
1821 | usb_set_intfdata(intf, NULL); | |
1822 | ||
b482d923 LP |
1823 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1824 | UVC_SC_VIDEOSTREAMING) | |
c0efd232 LP |
1825 | return; |
1826 | ||
c0efd232 | 1827 | dev->state |= UVC_DEV_DISCONNECTED; |
a9e28585 | 1828 | |
716fdee1 | 1829 | uvc_unregister_video(dev); |
c0efd232 LP |
1830 | } |
1831 | ||
1832 | static int uvc_suspend(struct usb_interface *intf, pm_message_t message) | |
1833 | { | |
1834 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1835 | struct uvc_streaming *stream; |
c0efd232 LP |
1836 | |
1837 | uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", | |
1838 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1839 | ||
1840 | /* Controls are cached on the fly so they don't need to be saved. */ | |
b482d923 LP |
1841 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1842 | UVC_SC_VIDEOCONTROL) | |
c0efd232 LP |
1843 | return uvc_status_suspend(dev); |
1844 | ||
35f02a68 LP |
1845 | list_for_each_entry(stream, &dev->streams, list) { |
1846 | if (stream->intf == intf) | |
1847 | return uvc_video_suspend(stream); | |
c0efd232 LP |
1848 | } |
1849 | ||
35f02a68 LP |
1850 | uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " |
1851 | "mismatch.\n"); | |
1852 | return -EINVAL; | |
c0efd232 LP |
1853 | } |
1854 | ||
9b0ae867 | 1855 | static int __uvc_resume(struct usb_interface *intf, int reset) |
c0efd232 LP |
1856 | { |
1857 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1858 | struct uvc_streaming *stream; |
c0efd232 LP |
1859 | |
1860 | uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", | |
1861 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1862 | ||
b482d923 LP |
1863 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1864 | UVC_SC_VIDEOCONTROL) { | |
7564f67d HV |
1865 | if (reset) { |
1866 | int ret = uvc_ctrl_resume_device(dev); | |
1867 | ||
1868 | if (ret < 0) | |
1869 | return ret; | |
1870 | } | |
c0efd232 LP |
1871 | |
1872 | return uvc_status_resume(dev); | |
1873 | } | |
1874 | ||
35f02a68 LP |
1875 | list_for_each_entry(stream, &dev->streams, list) { |
1876 | if (stream->intf == intf) | |
1877 | return uvc_video_resume(stream); | |
c0efd232 LP |
1878 | } |
1879 | ||
35f02a68 LP |
1880 | uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " |
1881 | "mismatch.\n"); | |
1882 | return -EINVAL; | |
c0efd232 LP |
1883 | } |
1884 | ||
9b0ae867 LP |
1885 | static int uvc_resume(struct usb_interface *intf) |
1886 | { | |
1887 | return __uvc_resume(intf, 0); | |
1888 | } | |
1889 | ||
1890 | static int uvc_reset_resume(struct usb_interface *intf) | |
1891 | { | |
1892 | return __uvc_resume(intf, 1); | |
1893 | } | |
1894 | ||
310fe524 LP |
1895 | /* ------------------------------------------------------------------------ |
1896 | * Module parameters | |
1897 | */ | |
1898 | ||
1899 | static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) | |
1900 | { | |
1901 | if (uvc_clock_param == CLOCK_MONOTONIC) | |
1902 | return sprintf(buffer, "CLOCK_MONOTONIC"); | |
1903 | else | |
1904 | return sprintf(buffer, "CLOCK_REALTIME"); | |
1905 | } | |
1906 | ||
1907 | static int uvc_clock_param_set(const char *val, struct kernel_param *kp) | |
1908 | { | |
1909 | if (strncasecmp(val, "clock_", strlen("clock_")) == 0) | |
1910 | val += strlen("clock_"); | |
1911 | ||
1912 | if (strcasecmp(val, "monotonic") == 0) | |
1913 | uvc_clock_param = CLOCK_MONOTONIC; | |
1914 | else if (strcasecmp(val, "realtime") == 0) | |
1915 | uvc_clock_param = CLOCK_REALTIME; | |
1916 | else | |
1917 | return -EINVAL; | |
1918 | ||
1919 | return 0; | |
1920 | } | |
1921 | ||
1922 | module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, | |
1923 | &uvc_clock_param, S_IRUGO|S_IWUSR); | |
1924 | MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); | |
1925 | module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); | |
1926 | MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); | |
1927 | module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); | |
1928 | MODULE_PARM_DESC(quirks, "Forced device quirks"); | |
1929 | module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); | |
1930 | MODULE_PARM_DESC(trace, "Trace level bitmask"); | |
1931 | module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); | |
1932 | MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); | |
1933 | ||
c0efd232 LP |
1934 | /* ------------------------------------------------------------------------ |
1935 | * Driver initialization and cleanup | |
1936 | */ | |
1937 | ||
1938 | /* | |
1939 | * The Logitech cameras listed below have their interface class set to | |
1940 | * VENDOR_SPEC because they don't announce themselves as UVC devices, even | |
1941 | * though they are compliant. | |
1942 | */ | |
1943 | static struct usb_device_id uvc_ids[] = { | |
bce039c0 LP |
1944 | /* Genius eFace 2025 */ |
1945 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1946 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1947 | .idVendor = 0x0458, | |
1948 | .idProduct = 0x706e, | |
1949 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1950 | .bInterfaceSubClass = 1, | |
1951 | .bInterfaceProtocol = 0, | |
1952 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
1953 | /* Microsoft Lifecam NX-6000 */ |
1954 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1955 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1956 | .idVendor = 0x045e, | |
1957 | .idProduct = 0x00f8, | |
1958 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1959 | .bInterfaceSubClass = 1, | |
1960 | .bInterfaceProtocol = 0, | |
1961 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1962 | /* Microsoft Lifecam VX-7000 */ | |
1963 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1964 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1965 | .idVendor = 0x045e, | |
1966 | .idProduct = 0x0723, | |
1967 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1968 | .bInterfaceSubClass = 1, | |
1969 | .bInterfaceProtocol = 0, | |
1970 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1971 | /* Logitech Quickcam Fusion */ | |
1972 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1973 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1974 | .idVendor = 0x046d, | |
1975 | .idProduct = 0x08c1, | |
1976 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1977 | .bInterfaceSubClass = 1, | |
1978 | .bInterfaceProtocol = 0 }, | |
1979 | /* Logitech Quickcam Orbit MP */ | |
1980 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1981 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1982 | .idVendor = 0x046d, | |
1983 | .idProduct = 0x08c2, | |
1984 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1985 | .bInterfaceSubClass = 1, | |
1986 | .bInterfaceProtocol = 0 }, | |
1987 | /* Logitech Quickcam Pro for Notebook */ | |
1988 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1989 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1990 | .idVendor = 0x046d, | |
1991 | .idProduct = 0x08c3, | |
1992 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1993 | .bInterfaceSubClass = 1, | |
1994 | .bInterfaceProtocol = 0 }, | |
1995 | /* Logitech Quickcam Pro 5000 */ | |
1996 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1997 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1998 | .idVendor = 0x046d, | |
1999 | .idProduct = 0x08c5, | |
2000 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2001 | .bInterfaceSubClass = 1, | |
2002 | .bInterfaceProtocol = 0 }, | |
2003 | /* Logitech Quickcam OEM Dell Notebook */ | |
2004 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2005 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2006 | .idVendor = 0x046d, | |
2007 | .idProduct = 0x08c6, | |
2008 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2009 | .bInterfaceSubClass = 1, | |
2010 | .bInterfaceProtocol = 0 }, | |
2011 | /* Logitech Quickcam OEM Cisco VT Camera II */ | |
2012 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2013 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2014 | .idVendor = 0x046d, | |
2015 | .idProduct = 0x08c7, | |
2016 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2017 | .bInterfaceSubClass = 1, | |
2018 | .bInterfaceProtocol = 0 }, | |
f61d1d8a LP |
2019 | /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ |
2020 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2021 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2022 | .idVendor = 0x058f, | |
2023 | .idProduct = 0x3820, | |
2024 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2025 | .bInterfaceSubClass = 1, | |
2026 | .bInterfaceProtocol = 0, | |
2027 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 | 2028 | /* Apple Built-In iSight */ |
2c2d264b | 2029 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 LP |
2030 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2031 | .idVendor = 0x05ac, | |
2032 | .idProduct = 0x8501, | |
2c2d264b LP |
2033 | .bInterfaceClass = USB_CLASS_VIDEO, |
2034 | .bInterfaceSubClass = 1, | |
2035 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2036 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2037 | | UVC_QUIRK_BUILTIN_ISIGHT }, | |
2038 | /* Genesys Logic USB 2.0 PC Camera */ | |
2c2d264b | 2039 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 | 2040 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2c2d264b LP |
2041 | .idVendor = 0x05e3, |
2042 | .idProduct = 0x0505, | |
2043 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2044 | .bInterfaceSubClass = 1, | |
2045 | .bInterfaceProtocol = 0, | |
2046 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
d79cd839 LP |
2047 | /* ViMicro Vega */ |
2048 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2049 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2050 | .idVendor = 0x0ac8, | |
2051 | .idProduct = 0x332d, | |
2052 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2053 | .bInterfaceSubClass = 1, | |
2054 | .bInterfaceProtocol = 0, | |
2055 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2056 | /* ViMicro - Minoru3D */ | |
2057 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2058 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2059 | .idVendor = 0x0ac8, | |
2060 | .idProduct = 0x3410, | |
2061 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2062 | .bInterfaceSubClass = 1, | |
2063 | .bInterfaceProtocol = 0, | |
2064 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2065 | /* ViMicro Venus - Minoru3D */ | |
2066 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
50144aee LP |
2067 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2068 | .idVendor = 0x0ac8, | |
d79cd839 | 2069 | .idProduct = 0x3420, |
50144aee LP |
2070 | .bInterfaceClass = USB_CLASS_VIDEO, |
2071 | .bInterfaceSubClass = 1, | |
2072 | .bInterfaceProtocol = 0, | |
2073 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
c0efd232 LP |
2074 | /* MT6227 */ |
2075 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2076 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2077 | .idVendor = 0x0e8d, | |
2078 | .idProduct = 0x0004, | |
2079 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2080 | .bInterfaceSubClass = 1, | |
2081 | .bInterfaceProtocol = 0, | |
bab6f66c LP |
2082 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2083 | | UVC_QUIRK_PROBE_DEF }, | |
c0efd232 LP |
2084 | /* Syntek (HP Spartan) */ |
2085 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2086 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2087 | .idVendor = 0x174f, | |
2088 | .idProduct = 0x5212, | |
2089 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2090 | .bInterfaceSubClass = 1, | |
2091 | .bInterfaceProtocol = 0, | |
25e69850 | 2092 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
562f0fed LP |
2093 | /* Syntek (Samsung Q310) */ |
2094 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2095 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2096 | .idVendor = 0x174f, | |
2097 | .idProduct = 0x5931, | |
2098 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2099 | .bInterfaceSubClass = 1, | |
2100 | .bInterfaceProtocol = 0, | |
2101 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f61d1d8a | 2102 | /* Syntek (Asus F9SG) */ |
25e69850 LP |
2103 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2104 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2105 | .idVendor = 0x174f, | |
2106 | .idProduct = 0x8a31, | |
2107 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2108 | .bInterfaceSubClass = 1, | |
2109 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2110 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
2111 | /* Syntek (Asus U3S) */ | |
2112 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2113 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2114 | .idVendor = 0x174f, | |
2115 | .idProduct = 0x8a33, | |
2116 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2117 | .bInterfaceSubClass = 1, | |
2118 | .bInterfaceProtocol = 0, | |
2119 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
0ce566da LP |
2120 | /* Syntek (JAOtech Smart Terminal) */ |
2121 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2122 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2123 | .idVendor = 0x174f, | |
2124 | .idProduct = 0x8a34, | |
2125 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2126 | .bInterfaceSubClass = 1, | |
2127 | .bInterfaceProtocol = 0, | |
2128 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
849a3aba | 2129 | /* Lenovo Thinkpad SL400/SL500 */ |
2f38483b LP |
2130 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2131 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2132 | .idVendor = 0x17ef, | |
2133 | .idProduct = 0x480b, | |
2134 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2135 | .bInterfaceSubClass = 1, | |
2136 | .bInterfaceProtocol = 0, | |
2137 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
2d2bf2a3 LP |
2138 | /* Aveo Technology USB 2.0 Camera */ |
2139 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2140 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2141 | .idVendor = 0x1871, | |
2142 | .idProduct = 0x0306, | |
2143 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2144 | .bInterfaceSubClass = 1, | |
2145 | .bInterfaceProtocol = 0, | |
5bdf1377 LP |
2146 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2147 | | UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
c0efd232 LP |
2148 | /* Ecamm Pico iMage */ |
2149 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2150 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2151 | .idVendor = 0x18cd, | |
2152 | .idProduct = 0xcafe, | |
2153 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2154 | .bInterfaceSubClass = 1, | |
2155 | .bInterfaceProtocol = 0, | |
2156 | .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
ca4a3456 LP |
2157 | /* FSC WebCam V30S */ |
2158 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2159 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2160 | .idVendor = 0x18ec, | |
2161 | .idProduct = 0x3288, | |
2162 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2163 | .bInterfaceSubClass = 1, | |
2164 | .bInterfaceProtocol = 0, | |
2165 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2166 | /* Bodelin ProScopeHR */ |
2167 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2168 | | USB_DEVICE_ID_MATCH_DEV_HI | |
2169 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2170 | .idVendor = 0x19ab, | |
2171 | .idProduct = 0x1000, | |
2172 | .bcdDevice_hi = 0x0126, | |
2173 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2174 | .bInterfaceSubClass = 1, | |
2175 | .bInterfaceProtocol = 0, | |
2176 | .driver_info = UVC_QUIRK_STATUS_INTERVAL }, | |
3bc766ad LP |
2177 | /* MSI StarCam 370i */ |
2178 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2179 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2180 | .idVendor = 0x1b3b, | |
2181 | .idProduct = 0x2951, | |
2182 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2183 | .bInterfaceSubClass = 1, | |
2184 | .bInterfaceProtocol = 0, | |
2185 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2186 | /* SiGma Micro USB Web Camera */ |
2187 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2188 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2189 | .idVendor = 0x1c4f, | |
2190 | .idProduct = 0x3000, | |
2191 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2192 | .bInterfaceSubClass = 1, | |
2193 | .bInterfaceProtocol = 0, | |
2194 | .driver_info = UVC_QUIRK_PROBE_MINMAX | |
d732c44c | 2195 | | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, |
c0efd232 LP |
2196 | /* Generic USB Video Class */ |
2197 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, | |
2198 | {} | |
2199 | }; | |
2200 | ||
2201 | MODULE_DEVICE_TABLE(usb, uvc_ids); | |
2202 | ||
2203 | struct uvc_driver uvc_driver = { | |
2204 | .driver = { | |
2205 | .name = "uvcvideo", | |
2206 | .probe = uvc_probe, | |
2207 | .disconnect = uvc_disconnect, | |
2208 | .suspend = uvc_suspend, | |
2209 | .resume = uvc_resume, | |
9b0ae867 | 2210 | .reset_resume = uvc_reset_resume, |
c0efd232 LP |
2211 | .id_table = uvc_ids, |
2212 | .supports_autosuspend = 1, | |
2213 | }, | |
2214 | }; | |
2215 | ||
2216 | static int __init uvc_init(void) | |
2217 | { | |
2218 | int result; | |
2219 | ||
2220 | INIT_LIST_HEAD(&uvc_driver.devices); | |
2221 | INIT_LIST_HEAD(&uvc_driver.controls); | |
c0efd232 LP |
2222 | mutex_init(&uvc_driver.ctrl_mutex); |
2223 | ||
2224 | uvc_ctrl_init(); | |
2225 | ||
2226 | result = usb_register(&uvc_driver.driver); | |
2227 | if (result == 0) | |
2228 | printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); | |
2229 | return result; | |
2230 | } | |
2231 | ||
2232 | static void __exit uvc_cleanup(void) | |
2233 | { | |
2234 | usb_deregister(&uvc_driver.driver); | |
2235 | } | |
2236 | ||
2237 | module_init(uvc_init); | |
2238 | module_exit(uvc_cleanup); | |
2239 | ||
c0efd232 LP |
2240 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2241 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2242 | MODULE_LICENSE("GPL"); | |
2243 | MODULE_VERSION(DRIVER_VERSION); | |
f87086e3 | 2244 |