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