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