Commit | Line | Data |
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c0efd232 LP |
1 | /* |
2 | * uvc_driver.c -- USB Video Class driver | |
3 | * | |
2c2d264b | 4 | * Copyright (C) 2005-2009 |
c0efd232 LP |
5 | * Laurent Pinchart (laurent.pinchart@skynet.be) |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | /* | |
ff924203 LP |
15 | * This driver aims to support video input and ouput devices compliant with the |
16 | * 'USB Video Class' specification. | |
c0efd232 LP |
17 | * |
18 | * The driver doesn't support the deprecated v4l1 interface. It implements the | |
19 | * mmap capture method only, and doesn't do any image format conversion in | |
20 | * software. If your user-space application doesn't support YUYV or MJPEG, fix | |
21 | * it :-). Please note that the MJPEG data have been stripped from their | |
22 | * Huffman tables (DHT marker), you will need to add it back if your JPEG | |
23 | * codec can't handle MJPEG data. | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
c0efd232 LP |
27 | #include <linux/list.h> |
28 | #include <linux/module.h> | |
29 | #include <linux/usb.h> | |
30 | #include <linux/videodev2.h> | |
31 | #include <linux/vmalloc.h> | |
32 | #include <linux/wait.h> | |
33 | #include <asm/atomic.h> | |
9bc6218d | 34 | #include <asm/unaligned.h> |
c0efd232 LP |
35 | |
36 | #include <media/v4l2-common.h> | |
37 | ||
38 | #include "uvcvideo.h" | |
39 | ||
40 | #define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>" | |
41 | #define DRIVER_DESC "USB Video Class driver" | |
42 | #ifndef DRIVER_VERSION | |
43 | #define DRIVER_VERSION "v0.1.0" | |
44 | #endif | |
45 | ||
310fe524 | 46 | unsigned int uvc_clock_param = CLOCK_MONOTONIC; |
0fbd8ee6 | 47 | unsigned int uvc_no_drop_param; |
73de3592 | 48 | static unsigned int uvc_quirks_param = -1; |
c0efd232 | 49 | unsigned int uvc_trace_param; |
b232a012 | 50 | unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; |
c0efd232 LP |
51 | |
52 | /* ------------------------------------------------------------------------ | |
2c2d264b | 53 | * Video formats |
c0efd232 LP |
54 | */ |
55 | ||
56 | static struct uvc_format_desc uvc_fmts[] = { | |
57 | { | |
58 | .name = "YUV 4:2:2 (YUYV)", | |
59 | .guid = UVC_GUID_FORMAT_YUY2, | |
60 | .fcc = V4L2_PIX_FMT_YUYV, | |
61 | }, | |
68f194e0 DR |
62 | { |
63 | .name = "YUV 4:2:2 (YUYV)", | |
64 | .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, | |
65 | .fcc = V4L2_PIX_FMT_YUYV, | |
66 | }, | |
c0efd232 LP |
67 | { |
68 | .name = "YUV 4:2:0 (NV12)", | |
69 | .guid = UVC_GUID_FORMAT_NV12, | |
70 | .fcc = V4L2_PIX_FMT_NV12, | |
71 | }, | |
72 | { | |
73 | .name = "MJPEG", | |
74 | .guid = UVC_GUID_FORMAT_MJPEG, | |
75 | .fcc = V4L2_PIX_FMT_MJPEG, | |
76 | }, | |
77 | { | |
78 | .name = "YVU 4:2:0 (YV12)", | |
79 | .guid = UVC_GUID_FORMAT_YV12, | |
80 | .fcc = V4L2_PIX_FMT_YVU420, | |
81 | }, | |
82 | { | |
83 | .name = "YUV 4:2:0 (I420)", | |
84 | .guid = UVC_GUID_FORMAT_I420, | |
85 | .fcc = V4L2_PIX_FMT_YUV420, | |
86 | }, | |
87 | { | |
88 | .name = "YUV 4:2:2 (UYVY)", | |
89 | .guid = UVC_GUID_FORMAT_UYVY, | |
90 | .fcc = V4L2_PIX_FMT_UYVY, | |
91 | }, | |
92 | { | |
93 | .name = "Greyscale", | |
94 | .guid = UVC_GUID_FORMAT_Y800, | |
95 | .fcc = V4L2_PIX_FMT_GREY, | |
96 | }, | |
97 | { | |
98 | .name = "RGB Bayer", | |
99 | .guid = UVC_GUID_FORMAT_BY8, | |
100 | .fcc = V4L2_PIX_FMT_SBGGR8, | |
101 | }, | |
102 | }; | |
103 | ||
104 | /* ------------------------------------------------------------------------ | |
105 | * Utility functions | |
106 | */ | |
107 | ||
108 | struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, | |
109 | __u8 epaddr) | |
110 | { | |
111 | struct usb_host_endpoint *ep; | |
112 | unsigned int i; | |
113 | ||
114 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
115 | ep = &alts->endpoint[i]; | |
116 | if (ep->desc.bEndpointAddress == epaddr) | |
117 | return ep; | |
118 | } | |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
123 | static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) | |
124 | { | |
125 | unsigned int len = ARRAY_SIZE(uvc_fmts); | |
126 | unsigned int i; | |
127 | ||
128 | for (i = 0; i < len; ++i) { | |
129 | if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) | |
130 | return &uvc_fmts[i]; | |
131 | } | |
132 | ||
133 | return NULL; | |
134 | } | |
135 | ||
136 | static __u32 uvc_colorspace(const __u8 primaries) | |
137 | { | |
138 | static const __u8 colorprimaries[] = { | |
139 | 0, | |
140 | V4L2_COLORSPACE_SRGB, | |
141 | V4L2_COLORSPACE_470_SYSTEM_M, | |
142 | V4L2_COLORSPACE_470_SYSTEM_BG, | |
143 | V4L2_COLORSPACE_SMPTE170M, | |
144 | V4L2_COLORSPACE_SMPTE240M, | |
145 | }; | |
146 | ||
147 | if (primaries < ARRAY_SIZE(colorprimaries)) | |
148 | return colorprimaries[primaries]; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | /* Simplify a fraction using a simple continued fraction decomposition. The | |
154 | * idea here is to convert fractions such as 333333/10000000 to 1/30 using | |
155 | * 32 bit arithmetic only. The algorithm is not perfect and relies upon two | |
156 | * arbitrary parameters to remove non-significative terms from the simple | |
157 | * continued fraction decomposition. Using 8 and 333 for n_terms and threshold | |
158 | * respectively seems to give nice results. | |
159 | */ | |
160 | void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, | |
161 | unsigned int n_terms, unsigned int threshold) | |
162 | { | |
163 | uint32_t *an; | |
164 | uint32_t x, y, r; | |
165 | unsigned int i, n; | |
166 | ||
167 | an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); | |
168 | if (an == NULL) | |
169 | return; | |
170 | ||
171 | /* Convert the fraction to a simple continued fraction. See | |
172 | * http://mathforum.org/dr.math/faq/faq.fractions.html | |
173 | * Stop if the current term is bigger than or equal to the given | |
174 | * threshold. | |
175 | */ | |
176 | x = *numerator; | |
177 | y = *denominator; | |
178 | ||
179 | for (n = 0; n < n_terms && y != 0; ++n) { | |
180 | an[n] = x / y; | |
181 | if (an[n] >= threshold) { | |
182 | if (n < 2) | |
183 | n++; | |
184 | break; | |
185 | } | |
186 | ||
187 | r = x - an[n] * y; | |
188 | x = y; | |
189 | y = r; | |
190 | } | |
191 | ||
192 | /* Expand the simple continued fraction back to an integer fraction. */ | |
193 | x = 0; | |
194 | y = 1; | |
195 | ||
196 | for (i = n; i > 0; --i) { | |
197 | r = y; | |
198 | y = an[i-1] * y + x; | |
199 | x = r; | |
200 | } | |
201 | ||
202 | *numerator = y; | |
203 | *denominator = x; | |
204 | kfree(an); | |
205 | } | |
206 | ||
207 | /* Convert a fraction to a frame interval in 100ns multiples. The idea here is | |
208 | * to compute numerator / denominator * 10000000 using 32 bit fixed point | |
209 | * arithmetic only. | |
210 | */ | |
211 | uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) | |
212 | { | |
213 | uint32_t multiplier; | |
214 | ||
215 | /* Saturate the result if the operation would overflow. */ | |
216 | if (denominator == 0 || | |
217 | numerator/denominator >= ((uint32_t)-1)/10000000) | |
218 | return (uint32_t)-1; | |
219 | ||
220 | /* Divide both the denominator and the multiplier by two until | |
221 | * numerator * multiplier doesn't overflow. If anyone knows a better | |
222 | * algorithm please let me know. | |
223 | */ | |
224 | multiplier = 10000000; | |
225 | while (numerator > ((uint32_t)-1)/multiplier) { | |
226 | multiplier /= 2; | |
227 | denominator /= 2; | |
228 | } | |
229 | ||
230 | return denominator ? numerator * multiplier / denominator : 0; | |
231 | } | |
232 | ||
233 | /* ------------------------------------------------------------------------ | |
234 | * Terminal and unit management | |
235 | */ | |
236 | ||
237 | static struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) | |
238 | { | |
239 | struct uvc_entity *entity; | |
240 | ||
241 | list_for_each_entry(entity, &dev->entities, list) { | |
242 | if (entity->id == id) | |
243 | return entity; | |
244 | } | |
245 | ||
246 | return NULL; | |
247 | } | |
248 | ||
249 | static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, | |
250 | int id, struct uvc_entity *entity) | |
251 | { | |
252 | unsigned int i; | |
253 | ||
254 | if (entity == NULL) | |
255 | entity = list_entry(&dev->entities, struct uvc_entity, list); | |
256 | ||
257 | list_for_each_entry_continue(entity, &dev->entities, list) { | |
8ca5a639 LP |
258 | for (i = 0; i < entity->bNrInPins; ++i) |
259 | if (entity->baSourceID[i] == id) | |
c0efd232 | 260 | return entity; |
c0efd232 LP |
261 | } |
262 | ||
263 | return NULL; | |
264 | } | |
265 | ||
8e113595 LP |
266 | static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) |
267 | { | |
268 | struct uvc_streaming *stream; | |
269 | ||
270 | list_for_each_entry(stream, &dev->streams, list) { | |
271 | if (stream->header.bTerminalLink == id) | |
272 | return stream; | |
273 | } | |
274 | ||
275 | return NULL; | |
276 | } | |
277 | ||
c0efd232 | 278 | /* ------------------------------------------------------------------------ |
8e113595 | 279 | * Descriptors parsing |
c0efd232 LP |
280 | */ |
281 | ||
282 | static int uvc_parse_format(struct uvc_device *dev, | |
283 | struct uvc_streaming *streaming, struct uvc_format *format, | |
284 | __u32 **intervals, unsigned char *buffer, int buflen) | |
285 | { | |
286 | struct usb_interface *intf = streaming->intf; | |
287 | struct usb_host_interface *alts = intf->cur_altsetting; | |
288 | struct uvc_format_desc *fmtdesc; | |
289 | struct uvc_frame *frame; | |
290 | const unsigned char *start = buffer; | |
291 | unsigned int interval; | |
292 | unsigned int i, n; | |
293 | __u8 ftype; | |
294 | ||
295 | format->type = buffer[2]; | |
296 | format->index = buffer[3]; | |
297 | ||
298 | switch (buffer[2]) { | |
b482d923 LP |
299 | case UVC_VS_FORMAT_UNCOMPRESSED: |
300 | case UVC_VS_FORMAT_FRAME_BASED: | |
301 | n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; | |
233548a2 | 302 | if (buflen < n) { |
b2d9cc42 | 303 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
304 | "interface %d FORMAT error\n", |
305 | dev->udev->devnum, | |
306 | alts->desc.bInterfaceNumber); | |
307 | return -EINVAL; | |
308 | } | |
309 | ||
310 | /* Find the format descriptor from its GUID. */ | |
311 | fmtdesc = uvc_format_by_guid(&buffer[5]); | |
312 | ||
313 | if (fmtdesc != NULL) { | |
d0ebf307 | 314 | strlcpy(format->name, fmtdesc->name, |
c0efd232 LP |
315 | sizeof format->name); |
316 | format->fcc = fmtdesc->fcc; | |
317 | } else { | |
36bd883e LP |
318 | uvc_printk(KERN_INFO, "Unknown video format %pUl\n", |
319 | &buffer[5]); | |
320 | snprintf(format->name, sizeof(format->name), "%pUl\n", | |
321 | &buffer[5]); | |
c0efd232 LP |
322 | format->fcc = 0; |
323 | } | |
324 | ||
325 | format->bpp = buffer[21]; | |
b482d923 LP |
326 | if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { |
327 | ftype = UVC_VS_FRAME_UNCOMPRESSED; | |
c0efd232 | 328 | } else { |
b482d923 | 329 | ftype = UVC_VS_FRAME_FRAME_BASED; |
c0efd232 LP |
330 | if (buffer[27]) |
331 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
332 | } | |
333 | break; | |
334 | ||
b482d923 | 335 | case UVC_VS_FORMAT_MJPEG: |
c0efd232 | 336 | if (buflen < 11) { |
b2d9cc42 | 337 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
338 | "interface %d FORMAT error\n", |
339 | dev->udev->devnum, | |
340 | alts->desc.bInterfaceNumber); | |
341 | return -EINVAL; | |
342 | } | |
343 | ||
d0ebf307 | 344 | strlcpy(format->name, "MJPEG", sizeof format->name); |
c0efd232 LP |
345 | format->fcc = V4L2_PIX_FMT_MJPEG; |
346 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
347 | format->bpp = 0; | |
b482d923 | 348 | ftype = UVC_VS_FRAME_MJPEG; |
c0efd232 LP |
349 | break; |
350 | ||
b482d923 | 351 | case UVC_VS_FORMAT_DV: |
c0efd232 | 352 | if (buflen < 9) { |
b2d9cc42 | 353 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
354 | "interface %d FORMAT error\n", |
355 | dev->udev->devnum, | |
356 | alts->desc.bInterfaceNumber); | |
357 | return -EINVAL; | |
358 | } | |
359 | ||
360 | switch (buffer[8] & 0x7f) { | |
361 | case 0: | |
d0ebf307 | 362 | strlcpy(format->name, "SD-DV", sizeof format->name); |
c0efd232 LP |
363 | break; |
364 | case 1: | |
d0ebf307 | 365 | strlcpy(format->name, "SDL-DV", sizeof format->name); |
c0efd232 LP |
366 | break; |
367 | case 2: | |
d0ebf307 | 368 | strlcpy(format->name, "HD-DV", sizeof format->name); |
c0efd232 LP |
369 | break; |
370 | default: | |
b2d9cc42 | 371 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
372 | "interface %d: unknown DV format %u\n", |
373 | dev->udev->devnum, | |
374 | alts->desc.bInterfaceNumber, buffer[8]); | |
375 | return -EINVAL; | |
376 | } | |
377 | ||
d0ebf307 | 378 | strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", |
c0efd232 LP |
379 | sizeof format->name); |
380 | ||
381 | format->fcc = V4L2_PIX_FMT_DV; | |
382 | format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; | |
383 | format->bpp = 0; | |
384 | ftype = 0; | |
385 | ||
386 | /* Create a dummy frame descriptor. */ | |
387 | frame = &format->frame[0]; | |
388 | memset(&format->frame[0], 0, sizeof format->frame[0]); | |
389 | frame->bFrameIntervalType = 1; | |
390 | frame->dwDefaultFrameInterval = 1; | |
391 | frame->dwFrameInterval = *intervals; | |
392 | *(*intervals)++ = 1; | |
393 | format->nframes = 1; | |
394 | break; | |
395 | ||
b482d923 LP |
396 | case UVC_VS_FORMAT_MPEG2TS: |
397 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
398 | /* Not supported yet. */ |
399 | default: | |
b2d9cc42 | 400 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
401 | "interface %d unsupported format %u\n", |
402 | dev->udev->devnum, alts->desc.bInterfaceNumber, | |
403 | buffer[2]); | |
404 | return -EINVAL; | |
405 | } | |
406 | ||
407 | uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); | |
408 | ||
409 | buflen -= buffer[0]; | |
410 | buffer += buffer[0]; | |
411 | ||
412 | /* Parse the frame descriptors. Only uncompressed, MJPEG and frame | |
413 | * based formats have frame descriptors. | |
414 | */ | |
c4ed8c66 LP |
415 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
416 | buffer[2] == ftype) { | |
078f8947 | 417 | frame = &format->frame[format->nframes]; |
b482d923 | 418 | if (ftype != UVC_VS_FRAME_FRAME_BASED) |
c0efd232 LP |
419 | n = buflen > 25 ? buffer[25] : 0; |
420 | else | |
421 | n = buflen > 21 ? buffer[21] : 0; | |
422 | ||
423 | n = n ? n : 3; | |
424 | ||
425 | if (buflen < 26 + 4*n) { | |
b2d9cc42 | 426 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
427 | "interface %d FRAME error\n", dev->udev->devnum, |
428 | alts->desc.bInterfaceNumber); | |
429 | return -EINVAL; | |
430 | } | |
431 | ||
432 | frame->bFrameIndex = buffer[3]; | |
433 | frame->bmCapabilities = buffer[4]; | |
9bc6218d MH |
434 | frame->wWidth = get_unaligned_le16(&buffer[5]); |
435 | frame->wHeight = get_unaligned_le16(&buffer[7]); | |
436 | frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); | |
437 | frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); | |
b482d923 | 438 | if (ftype != UVC_VS_FRAME_FRAME_BASED) { |
c0efd232 | 439 | frame->dwMaxVideoFrameBufferSize = |
9bc6218d | 440 | get_unaligned_le32(&buffer[17]); |
c0efd232 | 441 | frame->dwDefaultFrameInterval = |
9bc6218d | 442 | get_unaligned_le32(&buffer[21]); |
c0efd232 LP |
443 | frame->bFrameIntervalType = buffer[25]; |
444 | } else { | |
445 | frame->dwMaxVideoFrameBufferSize = 0; | |
446 | frame->dwDefaultFrameInterval = | |
9bc6218d | 447 | get_unaligned_le32(&buffer[17]); |
c0efd232 LP |
448 | frame->bFrameIntervalType = buffer[21]; |
449 | } | |
450 | frame->dwFrameInterval = *intervals; | |
451 | ||
452 | /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize | |
453 | * completely. Observed behaviours range from setting the | |
2c2d264b | 454 | * value to 1.1x the actual frame size to hardwiring the |
c0efd232 LP |
455 | * 16 low bits to 0. This results in a higher than necessary |
456 | * memory usage as well as a wrong image size information. For | |
457 | * uncompressed formats this can be fixed by computing the | |
458 | * value from the frame size. | |
459 | */ | |
460 | if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) | |
461 | frame->dwMaxVideoFrameBufferSize = format->bpp | |
462 | * frame->wWidth * frame->wHeight / 8; | |
463 | ||
464 | /* Some bogus devices report dwMinFrameInterval equal to | |
465 | * dwMaxFrameInterval and have dwFrameIntervalStep set to | |
466 | * zero. Setting all null intervals to 1 fixes the problem and | |
2c2d264b | 467 | * some other divisions by zero that could happen. |
c0efd232 LP |
468 | */ |
469 | for (i = 0; i < n; ++i) { | |
9bc6218d | 470 | interval = get_unaligned_le32(&buffer[26+4*i]); |
c0efd232 LP |
471 | *(*intervals)++ = interval ? interval : 1; |
472 | } | |
473 | ||
474 | /* Make sure that the default frame interval stays between | |
475 | * the boundaries. | |
476 | */ | |
477 | n -= frame->bFrameIntervalType ? 1 : 2; | |
478 | frame->dwDefaultFrameInterval = | |
479 | min(frame->dwFrameInterval[n], | |
480 | max(frame->dwFrameInterval[0], | |
481 | frame->dwDefaultFrameInterval)); | |
482 | ||
483 | uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", | |
484 | frame->wWidth, frame->wHeight, | |
485 | 10000000/frame->dwDefaultFrameInterval, | |
486 | (100000000/frame->dwDefaultFrameInterval)%10); | |
487 | ||
078f8947 | 488 | format->nframes++; |
c0efd232 LP |
489 | buflen -= buffer[0]; |
490 | buffer += buffer[0]; | |
491 | } | |
492 | ||
c4ed8c66 LP |
493 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
494 | buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { | |
c0efd232 LP |
495 | buflen -= buffer[0]; |
496 | buffer += buffer[0]; | |
497 | } | |
498 | ||
c4ed8c66 LP |
499 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
500 | buffer[2] == UVC_VS_COLORFORMAT) { | |
c0efd232 | 501 | if (buflen < 6) { |
b2d9cc42 | 502 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
503 | "interface %d COLORFORMAT error\n", |
504 | dev->udev->devnum, | |
505 | alts->desc.bInterfaceNumber); | |
506 | return -EINVAL; | |
507 | } | |
508 | ||
509 | format->colorspace = uvc_colorspace(buffer[3]); | |
510 | ||
511 | buflen -= buffer[0]; | |
512 | buffer += buffer[0]; | |
513 | } | |
514 | ||
515 | return buffer - start; | |
516 | } | |
517 | ||
518 | static int uvc_parse_streaming(struct uvc_device *dev, | |
519 | struct usb_interface *intf) | |
520 | { | |
521 | struct uvc_streaming *streaming = NULL; | |
522 | struct uvc_format *format; | |
523 | struct uvc_frame *frame; | |
524 | struct usb_host_interface *alts = &intf->altsetting[0]; | |
525 | unsigned char *_buffer, *buffer = alts->extra; | |
526 | int _buflen, buflen = alts->extralen; | |
527 | unsigned int nformats = 0, nframes = 0, nintervals = 0; | |
528 | unsigned int size, i, n, p; | |
529 | __u32 *interval; | |
530 | __u16 psize; | |
531 | int ret = -EINVAL; | |
532 | ||
533 | if (intf->cur_altsetting->desc.bInterfaceSubClass | |
b482d923 | 534 | != UVC_SC_VIDEOSTREAMING) { |
c0efd232 LP |
535 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " |
536 | "video streaming interface\n", dev->udev->devnum, | |
537 | intf->altsetting[0].desc.bInterfaceNumber); | |
538 | return -EINVAL; | |
539 | } | |
540 | ||
541 | if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { | |
542 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " | |
543 | "claimed\n", dev->udev->devnum, | |
544 | intf->altsetting[0].desc.bInterfaceNumber); | |
545 | return -EINVAL; | |
546 | } | |
547 | ||
548 | streaming = kzalloc(sizeof *streaming, GFP_KERNEL); | |
549 | if (streaming == NULL) { | |
550 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | mutex_init(&streaming->mutex); | |
35f02a68 | 555 | streaming->dev = dev; |
c0efd232 LP |
556 | streaming->intf = usb_get_intf(intf); |
557 | streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
558 | ||
559 | /* The Pico iMage webcam has its class-specific interface descriptors | |
560 | * after the endpoint descriptors. | |
561 | */ | |
562 | if (buflen == 0) { | |
563 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
564 | struct usb_host_endpoint *ep = &alts->endpoint[i]; | |
565 | ||
566 | if (ep->extralen == 0) | |
567 | continue; | |
568 | ||
569 | if (ep->extralen > 2 && | |
570 | ep->extra[1] == USB_DT_CS_INTERFACE) { | |
571 | uvc_trace(UVC_TRACE_DESCR, "trying extra data " | |
572 | "from endpoint %u.\n", i); | |
573 | buffer = alts->endpoint[i].extra; | |
574 | buflen = alts->endpoint[i].extralen; | |
575 | break; | |
576 | } | |
577 | } | |
578 | } | |
579 | ||
580 | /* Skip the standard interface descriptors. */ | |
581 | while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { | |
582 | buflen -= buffer[0]; | |
583 | buffer += buffer[0]; | |
584 | } | |
585 | ||
586 | if (buflen <= 2) { | |
587 | uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " | |
588 | "interface descriptors found.\n"); | |
589 | goto error; | |
590 | } | |
591 | ||
592 | /* Parse the header descriptor. */ | |
ff924203 | 593 | switch (buffer[2]) { |
b482d923 | 594 | case UVC_VS_OUTPUT_HEADER: |
ff924203 LP |
595 | streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
596 | size = 9; | |
597 | break; | |
598 | ||
b482d923 | 599 | case UVC_VS_INPUT_HEADER: |
ff924203 LP |
600 | streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
601 | size = 13; | |
602 | break; | |
603 | ||
604 | default: | |
c0efd232 | 605 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
ff924203 LP |
606 | "%d HEADER descriptor not found.\n", dev->udev->devnum, |
607 | alts->desc.bInterfaceNumber); | |
c0efd232 | 608 | goto error; |
ff924203 | 609 | } |
c0efd232 | 610 | |
ff924203 LP |
611 | p = buflen >= 4 ? buffer[3] : 0; |
612 | n = buflen >= size ? buffer[size-1] : 0; | |
613 | ||
614 | if (buflen < size + p*n) { | |
615 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " | |
616 | "interface %d HEADER descriptor is invalid.\n", | |
617 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
618 | goto error; | |
619 | } | |
c0efd232 | 620 | |
ff924203 LP |
621 | streaming->header.bNumFormats = p; |
622 | streaming->header.bEndpointAddress = buffer[6]; | |
b482d923 | 623 | if (buffer[2] == UVC_VS_INPUT_HEADER) { |
c0efd232 LP |
624 | streaming->header.bmInfo = buffer[7]; |
625 | streaming->header.bTerminalLink = buffer[8]; | |
626 | streaming->header.bStillCaptureMethod = buffer[9]; | |
627 | streaming->header.bTriggerSupport = buffer[10]; | |
628 | streaming->header.bTriggerUsage = buffer[11]; | |
c0efd232 | 629 | } else { |
ff924203 LP |
630 | streaming->header.bTerminalLink = buffer[7]; |
631 | } | |
632 | streaming->header.bControlSize = n; | |
633 | ||
634 | streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL); | |
635 | if (streaming->header.bmaControls == NULL) { | |
636 | ret = -ENOMEM; | |
c0efd232 LP |
637 | goto error; |
638 | } | |
639 | ||
ff924203 LP |
640 | memcpy(streaming->header.bmaControls, &buffer[size], p*n); |
641 | ||
c0efd232 LP |
642 | buflen -= buffer[0]; |
643 | buffer += buffer[0]; | |
644 | ||
645 | _buffer = buffer; | |
646 | _buflen = buflen; | |
647 | ||
648 | /* Count the format and frame descriptors. */ | |
042e143e | 649 | while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 650 | switch (_buffer[2]) { |
b482d923 LP |
651 | case UVC_VS_FORMAT_UNCOMPRESSED: |
652 | case UVC_VS_FORMAT_MJPEG: | |
653 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
654 | nformats++; |
655 | break; | |
656 | ||
b482d923 | 657 | case UVC_VS_FORMAT_DV: |
c0efd232 LP |
658 | /* DV format has no frame descriptor. We will create a |
659 | * dummy frame descriptor with a dummy frame interval. | |
660 | */ | |
661 | nformats++; | |
662 | nframes++; | |
663 | nintervals++; | |
664 | break; | |
665 | ||
b482d923 LP |
666 | case UVC_VS_FORMAT_MPEG2TS: |
667 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
668 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
669 | "interface %d FORMAT %u is not supported.\n", | |
670 | dev->udev->devnum, | |
671 | alts->desc.bInterfaceNumber, _buffer[2]); | |
672 | break; | |
673 | ||
b482d923 LP |
674 | case UVC_VS_FRAME_UNCOMPRESSED: |
675 | case UVC_VS_FRAME_MJPEG: | |
c0efd232 LP |
676 | nframes++; |
677 | if (_buflen > 25) | |
678 | nintervals += _buffer[25] ? _buffer[25] : 3; | |
679 | break; | |
680 | ||
b482d923 | 681 | case UVC_VS_FRAME_FRAME_BASED: |
c0efd232 LP |
682 | nframes++; |
683 | if (_buflen > 21) | |
684 | nintervals += _buffer[21] ? _buffer[21] : 3; | |
685 | break; | |
686 | } | |
687 | ||
688 | _buflen -= _buffer[0]; | |
689 | _buffer += _buffer[0]; | |
690 | } | |
691 | ||
692 | if (nformats == 0) { | |
693 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
694 | "%d has no supported formats defined.\n", | |
695 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
696 | goto error; | |
697 | } | |
698 | ||
699 | size = nformats * sizeof *format + nframes * sizeof *frame | |
700 | + nintervals * sizeof *interval; | |
701 | format = kzalloc(size, GFP_KERNEL); | |
702 | if (format == NULL) { | |
703 | ret = -ENOMEM; | |
704 | goto error; | |
705 | } | |
706 | ||
707 | frame = (struct uvc_frame *)&format[nformats]; | |
708 | interval = (__u32 *)&frame[nframes]; | |
709 | ||
710 | streaming->format = format; | |
711 | streaming->nformats = nformats; | |
712 | ||
713 | /* Parse the format descriptors. */ | |
042e143e | 714 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 715 | switch (buffer[2]) { |
b482d923 LP |
716 | case UVC_VS_FORMAT_UNCOMPRESSED: |
717 | case UVC_VS_FORMAT_MJPEG: | |
718 | case UVC_VS_FORMAT_DV: | |
719 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
720 | format->frame = frame; |
721 | ret = uvc_parse_format(dev, streaming, format, | |
722 | &interval, buffer, buflen); | |
723 | if (ret < 0) | |
724 | goto error; | |
725 | ||
726 | frame += format->nframes; | |
727 | format++; | |
728 | ||
729 | buflen -= ret; | |
730 | buffer += ret; | |
731 | continue; | |
732 | ||
733 | default: | |
734 | break; | |
735 | } | |
736 | ||
737 | buflen -= buffer[0]; | |
738 | buffer += buffer[0]; | |
739 | } | |
740 | ||
c4ed8c66 LP |
741 | if (buflen) |
742 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
743 | "%d has %u bytes of trailing descriptor garbage.\n", | |
744 | dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); | |
745 | ||
c0efd232 LP |
746 | /* Parse the alternate settings to find the maximum bandwidth. */ |
747 | for (i = 0; i < intf->num_altsetting; ++i) { | |
748 | struct usb_host_endpoint *ep; | |
749 | alts = &intf->altsetting[i]; | |
750 | ep = uvc_find_endpoint(alts, | |
751 | streaming->header.bEndpointAddress); | |
752 | if (ep == NULL) | |
753 | continue; | |
754 | ||
755 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); | |
756 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
757 | if (psize > streaming->maxpsize) | |
758 | streaming->maxpsize = psize; | |
759 | } | |
760 | ||
35f02a68 | 761 | list_add_tail(&streaming->list, &dev->streams); |
c0efd232 LP |
762 | return 0; |
763 | ||
764 | error: | |
765 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
766 | usb_put_intf(intf); | |
767 | kfree(streaming->format); | |
768 | kfree(streaming->header.bmaControls); | |
769 | kfree(streaming); | |
770 | return ret; | |
771 | } | |
772 | ||
8ca5a639 LP |
773 | static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, |
774 | unsigned int num_pads, unsigned int extra_size) | |
775 | { | |
776 | struct uvc_entity *entity; | |
777 | unsigned int num_inputs; | |
778 | unsigned int size; | |
779 | ||
780 | num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; | |
781 | size = sizeof(*entity) + extra_size + num_inputs; | |
782 | entity = kzalloc(size, GFP_KERNEL); | |
783 | if (entity == NULL) | |
784 | return NULL; | |
785 | ||
786 | entity->id = id; | |
787 | entity->type = type; | |
788 | ||
789 | entity->bNrInPins = num_inputs; | |
790 | entity->baSourceID = ((__u8 *)entity) + sizeof(*entity) + extra_size; | |
791 | ||
792 | return entity; | |
793 | } | |
794 | ||
c0efd232 LP |
795 | /* Parse vendor-specific extensions. */ |
796 | static int uvc_parse_vendor_control(struct uvc_device *dev, | |
797 | const unsigned char *buffer, int buflen) | |
798 | { | |
799 | struct usb_device *udev = dev->udev; | |
800 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
801 | struct uvc_entity *unit; | |
802 | unsigned int n, p; | |
803 | int handled = 0; | |
804 | ||
805 | switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { | |
806 | case 0x046d: /* Logitech */ | |
807 | if (buffer[1] != 0x41 || buffer[2] != 0x01) | |
808 | break; | |
809 | ||
810 | /* Logitech implements several vendor specific functions | |
811 | * through vendor specific extension units (LXU). | |
812 | * | |
813 | * The LXU descriptors are similar to XU descriptors | |
814 | * (see "USB Device Video Class for Video Devices", section | |
815 | * 3.7.2.6 "Extension Unit Descriptor") with the following | |
816 | * differences: | |
817 | * | |
818 | * ---------------------------------------------------------- | |
819 | * 0 bLength 1 Number | |
820 | * Size of this descriptor, in bytes: 24+p+n*2 | |
821 | * ---------------------------------------------------------- | |
822 | * 23+p+n bmControlsType N Bitmap | |
823 | * Individual bits in the set are defined: | |
824 | * 0: Absolute | |
825 | * 1: Relative | |
826 | * | |
827 | * This bitset is mapped exactly the same as bmControls. | |
828 | * ---------------------------------------------------------- | |
829 | * 23+p+n*2 bReserved 1 Boolean | |
830 | * ---------------------------------------------------------- | |
831 | * 24+p+n*2 iExtension 1 Index | |
832 | * Index of a string descriptor that describes this | |
833 | * extension unit. | |
834 | * ---------------------------------------------------------- | |
835 | */ | |
836 | p = buflen >= 22 ? buffer[21] : 0; | |
837 | n = buflen >= 25 + p ? buffer[22+p] : 0; | |
838 | ||
839 | if (buflen < 25 + p + 2*n) { | |
840 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
841 | "interface %d EXTENSION_UNIT error\n", | |
842 | udev->devnum, alts->desc.bInterfaceNumber); | |
843 | break; | |
844 | } | |
845 | ||
8ca5a639 LP |
846 | unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], |
847 | p + 1, 2*n); | |
c0efd232 LP |
848 | if (unit == NULL) |
849 | return -ENOMEM; | |
850 | ||
c0efd232 LP |
851 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
852 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 853 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 854 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 LP |
855 | unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); |
856 | unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) | |
857 | + n; | |
c0efd232 LP |
858 | memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); |
859 | ||
860 | if (buffer[24+p+2*n] != 0) | |
861 | usb_string(udev, buffer[24+p+2*n], unit->name, | |
862 | sizeof unit->name); | |
863 | else | |
864 | sprintf(unit->name, "Extension %u", buffer[3]); | |
865 | ||
866 | list_add_tail(&unit->list, &dev->entities); | |
867 | handled = 1; | |
868 | break; | |
869 | } | |
870 | ||
871 | return handled; | |
872 | } | |
873 | ||
874 | static int uvc_parse_standard_control(struct uvc_device *dev, | |
875 | const unsigned char *buffer, int buflen) | |
876 | { | |
877 | struct usb_device *udev = dev->udev; | |
878 | struct uvc_entity *unit, *term; | |
879 | struct usb_interface *intf; | |
880 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
881 | unsigned int i, n, p, len; | |
882 | __u16 type; | |
883 | ||
884 | switch (buffer[2]) { | |
b482d923 | 885 | case UVC_VC_HEADER: |
c0efd232 LP |
886 | n = buflen >= 12 ? buffer[11] : 0; |
887 | ||
888 | if (buflen < 12 || buflen < 12 + n) { | |
889 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
890 | "interface %d HEADER error\n", udev->devnum, | |
891 | alts->desc.bInterfaceNumber); | |
892 | return -EINVAL; | |
893 | } | |
894 | ||
9bc6218d MH |
895 | dev->uvc_version = get_unaligned_le16(&buffer[3]); |
896 | dev->clock_frequency = get_unaligned_le32(&buffer[7]); | |
c0efd232 LP |
897 | |
898 | /* Parse all USB Video Streaming interfaces. */ | |
899 | for (i = 0; i < n; ++i) { | |
900 | intf = usb_ifnum_to_if(udev, buffer[12+i]); | |
901 | if (intf == NULL) { | |
902 | uvc_trace(UVC_TRACE_DESCR, "device %d " | |
903 | "interface %d doesn't exists\n", | |
904 | udev->devnum, i); | |
905 | continue; | |
906 | } | |
907 | ||
908 | uvc_parse_streaming(dev, intf); | |
909 | } | |
910 | break; | |
911 | ||
b482d923 | 912 | case UVC_VC_INPUT_TERMINAL: |
c0efd232 LP |
913 | if (buflen < 8) { |
914 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
915 | "interface %d INPUT_TERMINAL error\n", | |
916 | udev->devnum, alts->desc.bInterfaceNumber); | |
917 | return -EINVAL; | |
918 | } | |
919 | ||
920 | /* Make sure the terminal type MSB is not null, otherwise it | |
921 | * could be confused with a unit. | |
922 | */ | |
9bc6218d | 923 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
924 | if ((type & 0xff00) == 0) { |
925 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
926 | "interface %d INPUT_TERMINAL %d has invalid " | |
927 | "type 0x%04x, skipping\n", udev->devnum, | |
928 | alts->desc.bInterfaceNumber, | |
929 | buffer[3], type); | |
930 | return 0; | |
931 | } | |
932 | ||
933 | n = 0; | |
934 | p = 0; | |
935 | len = 8; | |
936 | ||
b482d923 | 937 | if (type == UVC_ITT_CAMERA) { |
c0efd232 LP |
938 | n = buflen >= 15 ? buffer[14] : 0; |
939 | len = 15; | |
940 | ||
b482d923 | 941 | } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
c0efd232 LP |
942 | n = buflen >= 9 ? buffer[8] : 0; |
943 | p = buflen >= 10 + n ? buffer[9+n] : 0; | |
944 | len = 10; | |
945 | } | |
946 | ||
947 | if (buflen < len + n + p) { | |
948 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
949 | "interface %d INPUT_TERMINAL error\n", | |
950 | udev->devnum, alts->desc.bInterfaceNumber); | |
951 | return -EINVAL; | |
952 | } | |
953 | ||
8ca5a639 LP |
954 | term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], |
955 | 1, n + p); | |
c0efd232 LP |
956 | if (term == NULL) |
957 | return -ENOMEM; | |
958 | ||
b482d923 | 959 | if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { |
c0efd232 LP |
960 | term->camera.bControlSize = n; |
961 | term->camera.bmControls = (__u8 *)term + sizeof *term; | |
962 | term->camera.wObjectiveFocalLengthMin = | |
9bc6218d | 963 | get_unaligned_le16(&buffer[8]); |
c0efd232 | 964 | term->camera.wObjectiveFocalLengthMax = |
9bc6218d | 965 | get_unaligned_le16(&buffer[10]); |
c0efd232 | 966 | term->camera.wOcularFocalLength = |
9bc6218d | 967 | get_unaligned_le16(&buffer[12]); |
c0efd232 | 968 | memcpy(term->camera.bmControls, &buffer[15], n); |
b482d923 LP |
969 | } else if (UVC_ENTITY_TYPE(term) == |
970 | UVC_ITT_MEDIA_TRANSPORT_INPUT) { | |
c0efd232 LP |
971 | term->media.bControlSize = n; |
972 | term->media.bmControls = (__u8 *)term + sizeof *term; | |
973 | term->media.bTransportModeSize = p; | |
974 | term->media.bmTransportModes = (__u8 *)term | |
975 | + sizeof *term + n; | |
976 | memcpy(term->media.bmControls, &buffer[9], n); | |
977 | memcpy(term->media.bmTransportModes, &buffer[10+n], p); | |
978 | } | |
979 | ||
980 | if (buffer[7] != 0) | |
981 | usb_string(udev, buffer[7], term->name, | |
982 | sizeof term->name); | |
b482d923 | 983 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) |
c0efd232 | 984 | sprintf(term->name, "Camera %u", buffer[3]); |
b482d923 | 985 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) |
c0efd232 LP |
986 | sprintf(term->name, "Media %u", buffer[3]); |
987 | else | |
988 | sprintf(term->name, "Input %u", buffer[3]); | |
989 | ||
990 | list_add_tail(&term->list, &dev->entities); | |
991 | break; | |
992 | ||
b482d923 | 993 | case UVC_VC_OUTPUT_TERMINAL: |
c0efd232 LP |
994 | if (buflen < 9) { |
995 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
996 | "interface %d OUTPUT_TERMINAL error\n", | |
997 | udev->devnum, alts->desc.bInterfaceNumber); | |
998 | return -EINVAL; | |
999 | } | |
1000 | ||
1001 | /* Make sure the terminal type MSB is not null, otherwise it | |
1002 | * could be confused with a unit. | |
1003 | */ | |
9bc6218d | 1004 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
1005 | if ((type & 0xff00) == 0) { |
1006 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1007 | "interface %d OUTPUT_TERMINAL %d has invalid " | |
1008 | "type 0x%04x, skipping\n", udev->devnum, | |
1009 | alts->desc.bInterfaceNumber, buffer[3], type); | |
1010 | return 0; | |
1011 | } | |
1012 | ||
8ca5a639 LP |
1013 | term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], |
1014 | 1, 0); | |
c0efd232 LP |
1015 | if (term == NULL) |
1016 | return -ENOMEM; | |
1017 | ||
8ca5a639 | 1018 | memcpy(term->baSourceID, &buffer[7], 1); |
c0efd232 LP |
1019 | |
1020 | if (buffer[8] != 0) | |
1021 | usb_string(udev, buffer[8], term->name, | |
1022 | sizeof term->name); | |
1023 | else | |
1024 | sprintf(term->name, "Output %u", buffer[3]); | |
1025 | ||
1026 | list_add_tail(&term->list, &dev->entities); | |
1027 | break; | |
1028 | ||
b482d923 | 1029 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1030 | p = buflen >= 5 ? buffer[4] : 0; |
1031 | ||
1032 | if (buflen < 5 || buflen < 6 + p) { | |
1033 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1034 | "interface %d SELECTOR_UNIT error\n", | |
1035 | udev->devnum, alts->desc.bInterfaceNumber); | |
1036 | return -EINVAL; | |
1037 | } | |
1038 | ||
8ca5a639 | 1039 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); |
c0efd232 LP |
1040 | if (unit == NULL) |
1041 | return -ENOMEM; | |
1042 | ||
8ca5a639 | 1043 | memcpy(unit->baSourceID, &buffer[5], p); |
c0efd232 LP |
1044 | |
1045 | if (buffer[5+p] != 0) | |
1046 | usb_string(udev, buffer[5+p], unit->name, | |
1047 | sizeof unit->name); | |
1048 | else | |
1049 | sprintf(unit->name, "Selector %u", buffer[3]); | |
1050 | ||
1051 | list_add_tail(&unit->list, &dev->entities); | |
1052 | break; | |
1053 | ||
b482d923 | 1054 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1055 | n = buflen >= 8 ? buffer[7] : 0; |
1056 | p = dev->uvc_version >= 0x0110 ? 10 : 9; | |
1057 | ||
1058 | if (buflen < p + n) { | |
1059 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1060 | "interface %d PROCESSING_UNIT error\n", | |
1061 | udev->devnum, alts->desc.bInterfaceNumber); | |
1062 | return -EINVAL; | |
1063 | } | |
1064 | ||
8ca5a639 | 1065 | unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); |
c0efd232 LP |
1066 | if (unit == NULL) |
1067 | return -ENOMEM; | |
1068 | ||
8ca5a639 | 1069 | memcpy(unit->baSourceID, &buffer[4], 1); |
c0efd232 | 1070 | unit->processing.wMaxMultiplier = |
9bc6218d | 1071 | get_unaligned_le16(&buffer[5]); |
c0efd232 LP |
1072 | unit->processing.bControlSize = buffer[7]; |
1073 | unit->processing.bmControls = (__u8 *)unit + sizeof *unit; | |
1074 | memcpy(unit->processing.bmControls, &buffer[8], n); | |
1075 | if (dev->uvc_version >= 0x0110) | |
1076 | unit->processing.bmVideoStandards = buffer[9+n]; | |
1077 | ||
1078 | if (buffer[8+n] != 0) | |
1079 | usb_string(udev, buffer[8+n], unit->name, | |
1080 | sizeof unit->name); | |
1081 | else | |
1082 | sprintf(unit->name, "Processing %u", buffer[3]); | |
1083 | ||
1084 | list_add_tail(&unit->list, &dev->entities); | |
1085 | break; | |
1086 | ||
b482d923 | 1087 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1088 | p = buflen >= 22 ? buffer[21] : 0; |
1089 | n = buflen >= 24 + p ? buffer[22+p] : 0; | |
1090 | ||
1091 | if (buflen < 24 + p + n) { | |
1092 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1093 | "interface %d EXTENSION_UNIT error\n", | |
1094 | udev->devnum, alts->desc.bInterfaceNumber); | |
1095 | return -EINVAL; | |
1096 | } | |
1097 | ||
8ca5a639 | 1098 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); |
c0efd232 LP |
1099 | if (unit == NULL) |
1100 | return -ENOMEM; | |
1101 | ||
c0efd232 LP |
1102 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
1103 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 1104 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 1105 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 | 1106 | unit->extension.bmControls = (__u8 *)unit + sizeof *unit; |
c0efd232 LP |
1107 | memcpy(unit->extension.bmControls, &buffer[23+p], n); |
1108 | ||
1109 | if (buffer[23+p+n] != 0) | |
1110 | usb_string(udev, buffer[23+p+n], unit->name, | |
1111 | sizeof unit->name); | |
1112 | else | |
1113 | sprintf(unit->name, "Extension %u", buffer[3]); | |
1114 | ||
1115 | list_add_tail(&unit->list, &dev->entities); | |
1116 | break; | |
1117 | ||
1118 | default: | |
1119 | uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " | |
1120 | "descriptor (%u)\n", buffer[2]); | |
1121 | break; | |
1122 | } | |
1123 | ||
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | static int uvc_parse_control(struct uvc_device *dev) | |
1128 | { | |
1129 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
1130 | unsigned char *buffer = alts->extra; | |
1131 | int buflen = alts->extralen; | |
1132 | int ret; | |
1133 | ||
1134 | /* Parse the default alternate setting only, as the UVC specification | |
1135 | * defines a single alternate setting, the default alternate setting | |
1136 | * zero. | |
1137 | */ | |
1138 | ||
1139 | while (buflen > 2) { | |
1140 | if (uvc_parse_vendor_control(dev, buffer, buflen) || | |
1141 | buffer[1] != USB_DT_CS_INTERFACE) | |
1142 | goto next_descriptor; | |
1143 | ||
1144 | if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) | |
1145 | return ret; | |
1146 | ||
1147 | next_descriptor: | |
1148 | buflen -= buffer[0]; | |
1149 | buffer += buffer[0]; | |
1150 | } | |
1151 | ||
538e7a00 LP |
1152 | /* Check if the optional status endpoint is present. Built-in iSight |
1153 | * webcams have an interrupt endpoint but spit proprietary data that | |
1154 | * don't conform to the UVC status endpoint messages. Don't try to | |
1155 | * handle the interrupt endpoint for those cameras. | |
1156 | */ | |
1157 | if (alts->desc.bNumEndpoints == 1 && | |
1158 | !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { | |
c0efd232 LP |
1159 | struct usb_host_endpoint *ep = &alts->endpoint[0]; |
1160 | struct usb_endpoint_descriptor *desc = &ep->desc; | |
1161 | ||
1162 | if (usb_endpoint_is_int_in(desc) && | |
1163 | le16_to_cpu(desc->wMaxPacketSize) >= 8 && | |
1164 | desc->bInterval != 0) { | |
1165 | uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " | |
1166 | "(addr %02x).\n", desc->bEndpointAddress); | |
1167 | dev->int_ep = ep; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | /* ------------------------------------------------------------------------ | |
8e113595 | 1175 | * UVC device scan |
c0efd232 LP |
1176 | */ |
1177 | ||
c0efd232 LP |
1178 | /* |
1179 | * Scan the UVC descriptors to locate a chain starting at an Output Terminal | |
1180 | * and containing the following units: | |
1181 | * | |
8e113595 | 1182 | * - one or more Output Terminals (USB Streaming or Display) |
c0efd232 | 1183 | * - zero or one Processing Unit |
8e113595 | 1184 | * - zero, one or more single-input Selector Units |
c0efd232 LP |
1185 | * - zero or one multiple-input Selector Units, provided all inputs are |
1186 | * connected to input terminals | |
1187 | * - zero, one or mode single-input Extension Units | |
2c2d264b | 1188 | * - one or more Input Terminals (Camera, External or USB Streaming) |
c0efd232 | 1189 | * |
8e113595 LP |
1190 | * The terminal and units must match on of the following structures: |
1191 | * | |
1192 | * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) | |
1193 | * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... | |
1194 | * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) | |
1195 | * | |
1196 | * +---------+ +---------+ -> OTT_*(0) | |
1197 | * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... | |
1198 | * +---------+ +---------+ -> OTT_*(n) | |
1199 | * | |
1200 | * The Processing Unit and Extension Units can be in any order. Additional | |
1201 | * Extension Units connected to the main chain as single-unit branches are | |
1202 | * also supported. Single-input Selector Units are ignored. | |
c0efd232 | 1203 | */ |
8e113595 | 1204 | static int uvc_scan_chain_entity(struct uvc_video_chain *chain, |
c0efd232 LP |
1205 | struct uvc_entity *entity) |
1206 | { | |
1207 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1208 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1209 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1210 | printk(" <- XU %d", entity->id); | |
1211 | ||
8ca5a639 | 1212 | if (entity->bNrInPins != 1) { |
c0efd232 LP |
1213 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " |
1214 | "than 1 input pin.\n", entity->id); | |
1215 | return -1; | |
1216 | } | |
1217 | ||
c0efd232 LP |
1218 | break; |
1219 | ||
b482d923 | 1220 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1221 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1222 | printk(" <- PU %d", entity->id); | |
1223 | ||
8e113595 | 1224 | if (chain->processing != NULL) { |
c0efd232 LP |
1225 | uvc_trace(UVC_TRACE_DESCR, "Found multiple " |
1226 | "Processing Units in chain.\n"); | |
1227 | return -1; | |
1228 | } | |
1229 | ||
8e113595 | 1230 | chain->processing = entity; |
c0efd232 LP |
1231 | break; |
1232 | ||
b482d923 | 1233 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1234 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1235 | printk(" <- SU %d", entity->id); | |
1236 | ||
1237 | /* Single-input selector units are ignored. */ | |
8ca5a639 | 1238 | if (entity->bNrInPins == 1) |
c0efd232 LP |
1239 | break; |
1240 | ||
8e113595 | 1241 | if (chain->selector != NULL) { |
c0efd232 LP |
1242 | uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " |
1243 | "Units in chain.\n"); | |
1244 | return -1; | |
1245 | } | |
1246 | ||
8e113595 | 1247 | chain->selector = entity; |
c0efd232 LP |
1248 | break; |
1249 | ||
b482d923 LP |
1250 | case UVC_ITT_VENDOR_SPECIFIC: |
1251 | case UVC_ITT_CAMERA: | |
1252 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
c0efd232 LP |
1253 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1254 | printk(" <- IT %d\n", entity->id); | |
1255 | ||
c0efd232 LP |
1256 | break; |
1257 | ||
b482d923 | 1258 | case UVC_TT_STREAMING: |
4057ac6c LP |
1259 | if (UVC_ENTITY_IS_ITERM(entity)) { |
1260 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1261 | printk(" <- IT %d\n", entity->id); | |
1262 | } else { | |
1263 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1264 | printk(" OT %d", entity->id); | |
ff924203 LP |
1265 | } |
1266 | ||
ff924203 LP |
1267 | break; |
1268 | ||
c0efd232 LP |
1269 | default: |
1270 | uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " | |
1271 | "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); | |
1272 | return -1; | |
1273 | } | |
1274 | ||
6241d8ca | 1275 | list_add_tail(&entity->chain, &chain->entities); |
c0efd232 LP |
1276 | return 0; |
1277 | } | |
1278 | ||
8e113595 | 1279 | static int uvc_scan_chain_forward(struct uvc_video_chain *chain, |
c0efd232 LP |
1280 | struct uvc_entity *entity, struct uvc_entity *prev) |
1281 | { | |
1282 | struct uvc_entity *forward; | |
1283 | int found; | |
1284 | ||
1285 | /* Forward scan */ | |
1286 | forward = NULL; | |
1287 | found = 0; | |
1288 | ||
1289 | while (1) { | |
8e113595 | 1290 | forward = uvc_entity_by_reference(chain->dev, entity->id, |
c0efd232 LP |
1291 | forward); |
1292 | if (forward == NULL) | |
1293 | break; | |
8e113595 | 1294 | if (forward == prev) |
c0efd232 LP |
1295 | continue; |
1296 | ||
8e113595 LP |
1297 | switch (UVC_ENTITY_TYPE(forward)) { |
1298 | case UVC_VC_EXTENSION_UNIT: | |
8ca5a639 | 1299 | if (forward->bNrInPins != 1) { |
8e113595 LP |
1300 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " |
1301 | "has more than 1 input pin.\n", | |
1302 | entity->id); | |
1303 | return -EINVAL; | |
1304 | } | |
c0efd232 | 1305 | |
6241d8ca | 1306 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1307 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1308 | if (!found) | |
1309 | printk(" (->"); | |
1310 | ||
1311 | printk(" XU %d", forward->id); | |
1312 | found = 1; | |
1313 | } | |
1314 | break; | |
1315 | ||
1316 | case UVC_OTT_VENDOR_SPECIFIC: | |
1317 | case UVC_OTT_DISPLAY: | |
1318 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1319 | case UVC_TT_STREAMING: | |
1320 | if (UVC_ENTITY_IS_ITERM(forward)) { | |
1321 | uvc_trace(UVC_TRACE_DESCR, "Unsupported input " | |
1322 | "terminal %u.\n", forward->id); | |
1323 | return -EINVAL; | |
1324 | } | |
c0efd232 | 1325 | |
6241d8ca | 1326 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1327 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1328 | if (!found) | |
1329 | printk(" (->"); | |
1330 | ||
1331 | printk(" OT %d", forward->id); | |
1332 | found = 1; | |
1333 | } | |
1334 | break; | |
c0efd232 LP |
1335 | } |
1336 | } | |
1337 | if (found) | |
1338 | printk(")"); | |
1339 | ||
1340 | return 0; | |
1341 | } | |
1342 | ||
8e113595 | 1343 | static int uvc_scan_chain_backward(struct uvc_video_chain *chain, |
4057ac6c | 1344 | struct uvc_entity **_entity) |
c0efd232 | 1345 | { |
4057ac6c | 1346 | struct uvc_entity *entity = *_entity; |
c0efd232 | 1347 | struct uvc_entity *term; |
4057ac6c | 1348 | int id = -EINVAL, i; |
c0efd232 LP |
1349 | |
1350 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1351 | case UVC_VC_EXTENSION_UNIT: |
b482d923 | 1352 | case UVC_VC_PROCESSING_UNIT: |
8ca5a639 | 1353 | id = entity->baSourceID[0]; |
c0efd232 LP |
1354 | break; |
1355 | ||
b482d923 | 1356 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 | 1357 | /* Single-input selector units are ignored. */ |
8ca5a639 LP |
1358 | if (entity->bNrInPins == 1) { |
1359 | id = entity->baSourceID[0]; | |
c0efd232 LP |
1360 | break; |
1361 | } | |
1362 | ||
1363 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1364 | printk(" <- IT"); | |
1365 | ||
8e113595 | 1366 | chain->selector = entity; |
8ca5a639 LP |
1367 | for (i = 0; i < entity->bNrInPins; ++i) { |
1368 | id = entity->baSourceID[i]; | |
8e113595 | 1369 | term = uvc_entity_by_id(chain->dev, id); |
c0efd232 LP |
1370 | if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { |
1371 | uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " | |
1372 | "input %d isn't connected to an " | |
1373 | "input terminal\n", entity->id, i); | |
1374 | return -1; | |
1375 | } | |
1376 | ||
1377 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1378 | printk(" %d", term->id); | |
1379 | ||
6241d8ca | 1380 | list_add_tail(&term->chain, &chain->entities); |
8e113595 | 1381 | uvc_scan_chain_forward(chain, term, entity); |
c0efd232 LP |
1382 | } |
1383 | ||
1384 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1385 | printk("\n"); | |
1386 | ||
1387 | id = 0; | |
1388 | break; | |
4057ac6c LP |
1389 | |
1390 | case UVC_ITT_VENDOR_SPECIFIC: | |
1391 | case UVC_ITT_CAMERA: | |
1392 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
1393 | case UVC_OTT_VENDOR_SPECIFIC: | |
1394 | case UVC_OTT_DISPLAY: | |
1395 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1396 | case UVC_TT_STREAMING: | |
8ca5a639 | 1397 | id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; |
4057ac6c | 1398 | break; |
c0efd232 LP |
1399 | } |
1400 | ||
4057ac6c LP |
1401 | if (id <= 0) { |
1402 | *_entity = NULL; | |
1403 | return id; | |
1404 | } | |
1405 | ||
1406 | entity = uvc_entity_by_id(chain->dev, id); | |
1407 | if (entity == NULL) { | |
1408 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
1409 | "unknown entity %d.\n", id); | |
1410 | return -EINVAL; | |
1411 | } | |
1412 | ||
1413 | *_entity = entity; | |
1414 | return 0; | |
c0efd232 LP |
1415 | } |
1416 | ||
8e113595 | 1417 | static int uvc_scan_chain(struct uvc_video_chain *chain, |
4057ac6c | 1418 | struct uvc_entity *term) |
c0efd232 LP |
1419 | { |
1420 | struct uvc_entity *entity, *prev; | |
c0efd232 | 1421 | |
4057ac6c | 1422 | uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); |
ff924203 | 1423 | |
4057ac6c LP |
1424 | entity = term; |
1425 | prev = NULL; | |
8e113595 | 1426 | |
4057ac6c LP |
1427 | while (entity != NULL) { |
1428 | /* Entity must not be part of an existing chain */ | |
8e113595 LP |
1429 | if (entity->chain.next || entity->chain.prev) { |
1430 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
4057ac6c | 1431 | "entity %d already in chain.\n", entity->id); |
8e113595 | 1432 | return -EINVAL; |
c0efd232 LP |
1433 | } |
1434 | ||
1435 | /* Process entity */ | |
8e113595 LP |
1436 | if (uvc_scan_chain_entity(chain, entity) < 0) |
1437 | return -EINVAL; | |
c0efd232 LP |
1438 | |
1439 | /* Forward scan */ | |
8e113595 LP |
1440 | if (uvc_scan_chain_forward(chain, entity, prev) < 0) |
1441 | return -EINVAL; | |
c0efd232 | 1442 | |
c0efd232 | 1443 | /* Backward scan */ |
4057ac6c LP |
1444 | prev = entity; |
1445 | if (uvc_scan_chain_backward(chain, &entity) < 0) | |
1446 | return -EINVAL; | |
c0efd232 LP |
1447 | } |
1448 | ||
8e113595 LP |
1449 | return 0; |
1450 | } | |
1451 | ||
6241d8ca LP |
1452 | static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, |
1453 | char *buffer) | |
8e113595 LP |
1454 | { |
1455 | struct uvc_entity *term; | |
1456 | unsigned int nterms = 0; | |
1457 | char *p = buffer; | |
1458 | ||
1459 | list_for_each_entry(term, terms, chain) { | |
6241d8ca LP |
1460 | if (!UVC_ENTITY_IS_TERM(term) || |
1461 | UVC_TERM_DIRECTION(term) != dir) | |
1462 | continue; | |
1463 | ||
1464 | if (nterms) | |
8e113595 | 1465 | p += sprintf(p, ","); |
6241d8ca LP |
1466 | if (++nterms >= 4) { |
1467 | p += sprintf(p, "..."); | |
1468 | break; | |
8e113595 | 1469 | } |
6241d8ca | 1470 | p += sprintf(p, "%u", term->id); |
ff924203 | 1471 | } |
c0efd232 | 1472 | |
8e113595 LP |
1473 | return p - buffer; |
1474 | } | |
1475 | ||
1476 | static const char *uvc_print_chain(struct uvc_video_chain *chain) | |
1477 | { | |
1478 | static char buffer[43]; | |
1479 | char *p = buffer; | |
1480 | ||
6241d8ca | 1481 | p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); |
8e113595 | 1482 | p += sprintf(p, " -> "); |
6241d8ca | 1483 | uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); |
8e113595 LP |
1484 | |
1485 | return buffer; | |
c0efd232 LP |
1486 | } |
1487 | ||
1488 | /* | |
35f02a68 | 1489 | * Scan the device for video chains and register video devices. |
c0efd232 | 1490 | * |
8e113595 | 1491 | * Chains are scanned starting at their output terminals and walked backwards. |
c0efd232 | 1492 | */ |
35f02a68 | 1493 | static int uvc_scan_device(struct uvc_device *dev) |
c0efd232 | 1494 | { |
8e113595 | 1495 | struct uvc_video_chain *chain; |
c0efd232 | 1496 | struct uvc_entity *term; |
c0efd232 | 1497 | |
c0efd232 | 1498 | list_for_each_entry(term, &dev->entities, list) { |
8e113595 | 1499 | if (!UVC_ENTITY_IS_OTERM(term)) |
c0efd232 LP |
1500 | continue; |
1501 | ||
8e113595 LP |
1502 | /* If the terminal is already included in a chain, skip it. |
1503 | * This can happen for chains that have multiple output | |
1504 | * terminals, where all output terminals beside the first one | |
1505 | * will be inserted in the chain in forward scans. | |
1506 | */ | |
1507 | if (term->chain.next || term->chain.prev) | |
c0efd232 LP |
1508 | continue; |
1509 | ||
8e113595 LP |
1510 | chain = kzalloc(sizeof(*chain), GFP_KERNEL); |
1511 | if (chain == NULL) | |
1512 | return -ENOMEM; | |
1513 | ||
6241d8ca | 1514 | INIT_LIST_HEAD(&chain->entities); |
8e113595 LP |
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; | |
8e113595 | 1659 | vdev->fops = &uvc_fops; |
716fdee1 | 1660 | vdev->release = uvc_release; |
8e113595 LP |
1661 | strlcpy(vdev->name, dev->name, sizeof vdev->name); |
1662 | ||
1663 | /* Set the driver data before calling video_register_device, otherwise | |
1664 | * uvc_v4l2_open might race us. | |
1665 | */ | |
1666 | stream->vdev = vdev; | |
1667 | video_set_drvdata(vdev, stream); | |
1668 | ||
1669 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1670 | if (ret < 0) { | |
1671 | uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", | |
1672 | ret); | |
1673 | stream->vdev = NULL; | |
1674 | video_device_release(vdev); | |
1675 | return ret; | |
1676 | } | |
1677 | ||
716fdee1 | 1678 | atomic_inc(&dev->nstreams); |
8e113595 LP |
1679 | return 0; |
1680 | } | |
1681 | ||
1682 | /* | |
1683 | * Register all video devices in all chains. | |
1684 | */ | |
1685 | static int uvc_register_terms(struct uvc_device *dev, | |
6241d8ca | 1686 | struct uvc_video_chain *chain) |
8e113595 LP |
1687 | { |
1688 | struct uvc_streaming *stream; | |
1689 | struct uvc_entity *term; | |
1690 | int ret; | |
1691 | ||
6241d8ca | 1692 | list_for_each_entry(term, &chain->entities, chain) { |
8e113595 LP |
1693 | if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) |
1694 | continue; | |
1695 | ||
1696 | stream = uvc_stream_by_id(dev, term->id); | |
1697 | if (stream == NULL) { | |
1698 | uvc_printk(KERN_INFO, "No streaming interface found " | |
1699 | "for terminal %u.", term->id); | |
1700 | continue; | |
1701 | } | |
1702 | ||
1703 | stream->chain = chain; | |
1704 | ret = uvc_register_video(dev, stream); | |
1705 | if (ret < 0) | |
1706 | return ret; | |
1707 | } | |
1708 | ||
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | static int uvc_register_chains(struct uvc_device *dev) | |
1713 | { | |
1714 | struct uvc_video_chain *chain; | |
1715 | int ret; | |
1716 | ||
1717 | list_for_each_entry(chain, &dev->chains, list) { | |
6241d8ca | 1718 | ret = uvc_register_terms(dev, chain); |
8e113595 LP |
1719 | if (ret < 0) |
1720 | return ret; | |
1721 | } | |
1722 | ||
1723 | return 0; | |
1724 | } | |
1725 | ||
1726 | /* ------------------------------------------------------------------------ | |
1727 | * USB probe, disconnect, suspend and resume | |
1728 | */ | |
1729 | ||
c0efd232 LP |
1730 | static int uvc_probe(struct usb_interface *intf, |
1731 | const struct usb_device_id *id) | |
1732 | { | |
1733 | struct usb_device *udev = interface_to_usbdev(intf); | |
1734 | struct uvc_device *dev; | |
1735 | int ret; | |
1736 | ||
1737 | if (id->idVendor && id->idProduct) | |
1738 | uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " | |
1739 | "(%04x:%04x)\n", udev->devpath, id->idVendor, | |
1740 | id->idProduct); | |
1741 | else | |
1742 | uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", | |
1743 | udev->devpath); | |
1744 | ||
2c2d264b | 1745 | /* Allocate memory for the device and initialize it. */ |
c0efd232 LP |
1746 | if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) |
1747 | return -ENOMEM; | |
1748 | ||
1749 | INIT_LIST_HEAD(&dev->entities); | |
8e113595 | 1750 | INIT_LIST_HEAD(&dev->chains); |
35f02a68 | 1751 | INIT_LIST_HEAD(&dev->streams); |
716fdee1 | 1752 | atomic_set(&dev->nstreams, 0); |
04a37e0f | 1753 | atomic_set(&dev->users, 0); |
c0efd232 LP |
1754 | |
1755 | dev->udev = usb_get_dev(udev); | |
1756 | dev->intf = usb_get_intf(intf); | |
1757 | dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
73de3592 LP |
1758 | dev->quirks = (uvc_quirks_param == -1) |
1759 | ? id->driver_info : uvc_quirks_param; | |
c0efd232 LP |
1760 | |
1761 | if (udev->product != NULL) | |
d0ebf307 | 1762 | strlcpy(dev->name, udev->product, sizeof dev->name); |
c0efd232 LP |
1763 | else |
1764 | snprintf(dev->name, sizeof dev->name, | |
1765 | "UVC Camera (%04x:%04x)", | |
1766 | le16_to_cpu(udev->descriptor.idVendor), | |
1767 | le16_to_cpu(udev->descriptor.idProduct)); | |
1768 | ||
2c2d264b | 1769 | /* Parse the Video Class control descriptor. */ |
c0efd232 LP |
1770 | if (uvc_parse_control(dev) < 0) { |
1771 | uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " | |
1772 | "descriptors.\n"); | |
1773 | goto error; | |
1774 | } | |
1775 | ||
fba4578e | 1776 | uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", |
c0efd232 LP |
1777 | dev->uvc_version >> 8, dev->uvc_version & 0xff, |
1778 | udev->product ? udev->product : "<unnamed>", | |
1779 | le16_to_cpu(udev->descriptor.idVendor), | |
1780 | le16_to_cpu(udev->descriptor.idProduct)); | |
1781 | ||
73de3592 LP |
1782 | if (dev->quirks != id->driver_info) { |
1783 | uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " | |
1784 | "parameter for testing purpose.\n", dev->quirks); | |
c0efd232 LP |
1785 | uvc_printk(KERN_INFO, "Please report required quirks to the " |
1786 | "linux-uvc-devel mailing list.\n"); | |
1787 | } | |
1788 | ||
2c2d264b | 1789 | /* Initialize controls. */ |
c0efd232 LP |
1790 | if (uvc_ctrl_init_device(dev) < 0) |
1791 | goto error; | |
1792 | ||
8e113595 | 1793 | /* Scan the device for video chains. */ |
35f02a68 | 1794 | if (uvc_scan_device(dev) < 0) |
c0efd232 LP |
1795 | goto error; |
1796 | ||
8e113595 LP |
1797 | /* Register video devices. */ |
1798 | if (uvc_register_chains(dev) < 0) | |
1799 | goto error; | |
1800 | ||
2c2d264b | 1801 | /* Save our data pointer in the interface data. */ |
c0efd232 LP |
1802 | usb_set_intfdata(intf, dev); |
1803 | ||
2c2d264b | 1804 | /* Initialize the interrupt URB. */ |
c0efd232 LP |
1805 | if ((ret = uvc_status_init(dev)) < 0) { |
1806 | uvc_printk(KERN_INFO, "Unable to initialize the status " | |
1807 | "endpoint (%d), status interrupt will not be " | |
1808 | "supported.\n", ret); | |
1809 | } | |
1810 | ||
1811 | uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); | |
1812 | return 0; | |
1813 | ||
1814 | error: | |
716fdee1 | 1815 | uvc_unregister_video(dev); |
c0efd232 LP |
1816 | return -ENODEV; |
1817 | } | |
1818 | ||
1819 | static void uvc_disconnect(struct usb_interface *intf) | |
1820 | { | |
1821 | struct uvc_device *dev = usb_get_intfdata(intf); | |
1822 | ||
1823 | /* Set the USB interface data to NULL. This can be done outside the | |
1824 | * lock, as there's no other reader. | |
1825 | */ | |
1826 | usb_set_intfdata(intf, NULL); | |
1827 | ||
b482d923 LP |
1828 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1829 | UVC_SC_VIDEOSTREAMING) | |
c0efd232 LP |
1830 | return; |
1831 | ||
c0efd232 | 1832 | dev->state |= UVC_DEV_DISCONNECTED; |
a9e28585 | 1833 | |
716fdee1 | 1834 | uvc_unregister_video(dev); |
c0efd232 LP |
1835 | } |
1836 | ||
1837 | static int uvc_suspend(struct usb_interface *intf, pm_message_t message) | |
1838 | { | |
1839 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1840 | struct uvc_streaming *stream; |
c0efd232 LP |
1841 | |
1842 | uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", | |
1843 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1844 | ||
1845 | /* Controls are cached on the fly so they don't need to be saved. */ | |
b482d923 LP |
1846 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1847 | UVC_SC_VIDEOCONTROL) | |
c0efd232 LP |
1848 | return uvc_status_suspend(dev); |
1849 | ||
35f02a68 LP |
1850 | list_for_each_entry(stream, &dev->streams, list) { |
1851 | if (stream->intf == intf) | |
1852 | return uvc_video_suspend(stream); | |
c0efd232 LP |
1853 | } |
1854 | ||
35f02a68 LP |
1855 | uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " |
1856 | "mismatch.\n"); | |
1857 | return -EINVAL; | |
c0efd232 LP |
1858 | } |
1859 | ||
9b0ae867 | 1860 | static int __uvc_resume(struct usb_interface *intf, int reset) |
c0efd232 LP |
1861 | { |
1862 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1863 | struct uvc_streaming *stream; |
c0efd232 LP |
1864 | |
1865 | uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", | |
1866 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1867 | ||
b482d923 LP |
1868 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1869 | UVC_SC_VIDEOCONTROL) { | |
7564f67d HV |
1870 | if (reset) { |
1871 | int ret = uvc_ctrl_resume_device(dev); | |
1872 | ||
1873 | if (ret < 0) | |
1874 | return ret; | |
1875 | } | |
c0efd232 LP |
1876 | |
1877 | return uvc_status_resume(dev); | |
1878 | } | |
1879 | ||
35f02a68 LP |
1880 | list_for_each_entry(stream, &dev->streams, list) { |
1881 | if (stream->intf == intf) | |
1882 | return uvc_video_resume(stream); | |
c0efd232 LP |
1883 | } |
1884 | ||
35f02a68 LP |
1885 | uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " |
1886 | "mismatch.\n"); | |
1887 | return -EINVAL; | |
c0efd232 LP |
1888 | } |
1889 | ||
9b0ae867 LP |
1890 | static int uvc_resume(struct usb_interface *intf) |
1891 | { | |
1892 | return __uvc_resume(intf, 0); | |
1893 | } | |
1894 | ||
1895 | static int uvc_reset_resume(struct usb_interface *intf) | |
1896 | { | |
1897 | return __uvc_resume(intf, 1); | |
1898 | } | |
1899 | ||
310fe524 LP |
1900 | /* ------------------------------------------------------------------------ |
1901 | * Module parameters | |
1902 | */ | |
1903 | ||
1904 | static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) | |
1905 | { | |
1906 | if (uvc_clock_param == CLOCK_MONOTONIC) | |
1907 | return sprintf(buffer, "CLOCK_MONOTONIC"); | |
1908 | else | |
1909 | return sprintf(buffer, "CLOCK_REALTIME"); | |
1910 | } | |
1911 | ||
1912 | static int uvc_clock_param_set(const char *val, struct kernel_param *kp) | |
1913 | { | |
1914 | if (strncasecmp(val, "clock_", strlen("clock_")) == 0) | |
1915 | val += strlen("clock_"); | |
1916 | ||
1917 | if (strcasecmp(val, "monotonic") == 0) | |
1918 | uvc_clock_param = CLOCK_MONOTONIC; | |
1919 | else if (strcasecmp(val, "realtime") == 0) | |
1920 | uvc_clock_param = CLOCK_REALTIME; | |
1921 | else | |
1922 | return -EINVAL; | |
1923 | ||
1924 | return 0; | |
1925 | } | |
1926 | ||
1927 | module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, | |
1928 | &uvc_clock_param, S_IRUGO|S_IWUSR); | |
1929 | MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); | |
1930 | module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); | |
1931 | MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); | |
1932 | module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); | |
1933 | MODULE_PARM_DESC(quirks, "Forced device quirks"); | |
1934 | module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); | |
1935 | MODULE_PARM_DESC(trace, "Trace level bitmask"); | |
1936 | module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); | |
1937 | MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); | |
1938 | ||
c0efd232 LP |
1939 | /* ------------------------------------------------------------------------ |
1940 | * Driver initialization and cleanup | |
1941 | */ | |
1942 | ||
1943 | /* | |
1944 | * The Logitech cameras listed below have their interface class set to | |
1945 | * VENDOR_SPEC because they don't announce themselves as UVC devices, even | |
1946 | * though they are compliant. | |
1947 | */ | |
1948 | static struct usb_device_id uvc_ids[] = { | |
bce039c0 LP |
1949 | /* Genius eFace 2025 */ |
1950 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1951 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1952 | .idVendor = 0x0458, | |
1953 | .idProduct = 0x706e, | |
1954 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1955 | .bInterfaceSubClass = 1, | |
1956 | .bInterfaceProtocol = 0, | |
1957 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
1958 | /* Microsoft Lifecam NX-6000 */ |
1959 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1960 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1961 | .idVendor = 0x045e, | |
1962 | .idProduct = 0x00f8, | |
1963 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1964 | .bInterfaceSubClass = 1, | |
1965 | .bInterfaceProtocol = 0, | |
1966 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1967 | /* Microsoft Lifecam VX-7000 */ | |
1968 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1969 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1970 | .idVendor = 0x045e, | |
1971 | .idProduct = 0x0723, | |
1972 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1973 | .bInterfaceSubClass = 1, | |
1974 | .bInterfaceProtocol = 0, | |
1975 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1976 | /* Logitech Quickcam Fusion */ | |
1977 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1978 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1979 | .idVendor = 0x046d, | |
1980 | .idProduct = 0x08c1, | |
1981 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1982 | .bInterfaceSubClass = 1, | |
1983 | .bInterfaceProtocol = 0 }, | |
1984 | /* Logitech Quickcam Orbit MP */ | |
1985 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1986 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1987 | .idVendor = 0x046d, | |
1988 | .idProduct = 0x08c2, | |
1989 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1990 | .bInterfaceSubClass = 1, | |
1991 | .bInterfaceProtocol = 0 }, | |
1992 | /* Logitech Quickcam Pro for Notebook */ | |
1993 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1994 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1995 | .idVendor = 0x046d, | |
1996 | .idProduct = 0x08c3, | |
1997 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1998 | .bInterfaceSubClass = 1, | |
1999 | .bInterfaceProtocol = 0 }, | |
2000 | /* Logitech Quickcam Pro 5000 */ | |
2001 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2002 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2003 | .idVendor = 0x046d, | |
2004 | .idProduct = 0x08c5, | |
2005 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2006 | .bInterfaceSubClass = 1, | |
2007 | .bInterfaceProtocol = 0 }, | |
2008 | /* Logitech Quickcam OEM Dell Notebook */ | |
2009 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2010 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2011 | .idVendor = 0x046d, | |
2012 | .idProduct = 0x08c6, | |
2013 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2014 | .bInterfaceSubClass = 1, | |
2015 | .bInterfaceProtocol = 0 }, | |
2016 | /* Logitech Quickcam OEM Cisco VT Camera II */ | |
2017 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2018 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2019 | .idVendor = 0x046d, | |
2020 | .idProduct = 0x08c7, | |
2021 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2022 | .bInterfaceSubClass = 1, | |
2023 | .bInterfaceProtocol = 0 }, | |
f61d1d8a LP |
2024 | /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ |
2025 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2026 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2027 | .idVendor = 0x058f, | |
2028 | .idProduct = 0x3820, | |
2029 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2030 | .bInterfaceSubClass = 1, | |
2031 | .bInterfaceProtocol = 0, | |
2032 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 | 2033 | /* Apple Built-In iSight */ |
2c2d264b | 2034 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 LP |
2035 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2036 | .idVendor = 0x05ac, | |
2037 | .idProduct = 0x8501, | |
2c2d264b LP |
2038 | .bInterfaceClass = USB_CLASS_VIDEO, |
2039 | .bInterfaceSubClass = 1, | |
2040 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2041 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2042 | | UVC_QUIRK_BUILTIN_ISIGHT }, | |
2043 | /* Genesys Logic USB 2.0 PC Camera */ | |
2c2d264b | 2044 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 | 2045 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2c2d264b LP |
2046 | .idVendor = 0x05e3, |
2047 | .idProduct = 0x0505, | |
2048 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2049 | .bInterfaceSubClass = 1, | |
2050 | .bInterfaceProtocol = 0, | |
2051 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
d79cd839 LP |
2052 | /* ViMicro Vega */ |
2053 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2054 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2055 | .idVendor = 0x0ac8, | |
2056 | .idProduct = 0x332d, | |
2057 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2058 | .bInterfaceSubClass = 1, | |
2059 | .bInterfaceProtocol = 0, | |
2060 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2061 | /* ViMicro - Minoru3D */ | |
2062 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2063 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2064 | .idVendor = 0x0ac8, | |
2065 | .idProduct = 0x3410, | |
2066 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2067 | .bInterfaceSubClass = 1, | |
2068 | .bInterfaceProtocol = 0, | |
2069 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2070 | /* ViMicro Venus - Minoru3D */ | |
2071 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
50144aee LP |
2072 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2073 | .idVendor = 0x0ac8, | |
d79cd839 | 2074 | .idProduct = 0x3420, |
50144aee LP |
2075 | .bInterfaceClass = USB_CLASS_VIDEO, |
2076 | .bInterfaceSubClass = 1, | |
2077 | .bInterfaceProtocol = 0, | |
2078 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
c0efd232 LP |
2079 | /* MT6227 */ |
2080 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2081 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2082 | .idVendor = 0x0e8d, | |
2083 | .idProduct = 0x0004, | |
2084 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2085 | .bInterfaceSubClass = 1, | |
2086 | .bInterfaceProtocol = 0, | |
bab6f66c LP |
2087 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2088 | | UVC_QUIRK_PROBE_DEF }, | |
c0efd232 LP |
2089 | /* Syntek (HP Spartan) */ |
2090 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2091 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2092 | .idVendor = 0x174f, | |
2093 | .idProduct = 0x5212, | |
2094 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2095 | .bInterfaceSubClass = 1, | |
2096 | .bInterfaceProtocol = 0, | |
25e69850 | 2097 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
562f0fed LP |
2098 | /* Syntek (Samsung Q310) */ |
2099 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2100 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2101 | .idVendor = 0x174f, | |
2102 | .idProduct = 0x5931, | |
2103 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2104 | .bInterfaceSubClass = 1, | |
2105 | .bInterfaceProtocol = 0, | |
2106 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f61d1d8a | 2107 | /* Syntek (Asus F9SG) */ |
25e69850 LP |
2108 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2109 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2110 | .idVendor = 0x174f, | |
2111 | .idProduct = 0x8a31, | |
2112 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2113 | .bInterfaceSubClass = 1, | |
2114 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2115 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
2116 | /* Syntek (Asus U3S) */ | |
2117 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2118 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2119 | .idVendor = 0x174f, | |
2120 | .idProduct = 0x8a33, | |
2121 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2122 | .bInterfaceSubClass = 1, | |
2123 | .bInterfaceProtocol = 0, | |
2124 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
0ce566da LP |
2125 | /* Syntek (JAOtech Smart Terminal) */ |
2126 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2127 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2128 | .idVendor = 0x174f, | |
2129 | .idProduct = 0x8a34, | |
2130 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2131 | .bInterfaceSubClass = 1, | |
2132 | .bInterfaceProtocol = 0, | |
2133 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
849a3aba | 2134 | /* Lenovo Thinkpad SL400/SL500 */ |
2f38483b LP |
2135 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2136 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2137 | .idVendor = 0x17ef, | |
2138 | .idProduct = 0x480b, | |
2139 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2140 | .bInterfaceSubClass = 1, | |
2141 | .bInterfaceProtocol = 0, | |
2142 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
2d2bf2a3 LP |
2143 | /* Aveo Technology USB 2.0 Camera */ |
2144 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2145 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2146 | .idVendor = 0x1871, | |
2147 | .idProduct = 0x0306, | |
2148 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2149 | .bInterfaceSubClass = 1, | |
2150 | .bInterfaceProtocol = 0, | |
5bdf1377 LP |
2151 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2152 | | UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
c0efd232 LP |
2153 | /* Ecamm Pico iMage */ |
2154 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2155 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2156 | .idVendor = 0x18cd, | |
2157 | .idProduct = 0xcafe, | |
2158 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2159 | .bInterfaceSubClass = 1, | |
2160 | .bInterfaceProtocol = 0, | |
2161 | .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
ca4a3456 LP |
2162 | /* FSC WebCam V30S */ |
2163 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2164 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2165 | .idVendor = 0x18ec, | |
2166 | .idProduct = 0x3288, | |
2167 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2168 | .bInterfaceSubClass = 1, | |
2169 | .bInterfaceProtocol = 0, | |
2170 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2171 | /* Bodelin ProScopeHR */ |
2172 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2173 | | USB_DEVICE_ID_MATCH_DEV_HI | |
2174 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2175 | .idVendor = 0x19ab, | |
2176 | .idProduct = 0x1000, | |
2177 | .bcdDevice_hi = 0x0126, | |
2178 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2179 | .bInterfaceSubClass = 1, | |
2180 | .bInterfaceProtocol = 0, | |
2181 | .driver_info = UVC_QUIRK_STATUS_INTERVAL }, | |
3bc766ad LP |
2182 | /* MSI StarCam 370i */ |
2183 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2184 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2185 | .idVendor = 0x1b3b, | |
2186 | .idProduct = 0x2951, | |
2187 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2188 | .bInterfaceSubClass = 1, | |
2189 | .bInterfaceProtocol = 0, | |
2190 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2191 | /* SiGma Micro USB Web Camera */ |
2192 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2193 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2194 | .idVendor = 0x1c4f, | |
2195 | .idProduct = 0x3000, | |
2196 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2197 | .bInterfaceSubClass = 1, | |
2198 | .bInterfaceProtocol = 0, | |
2199 | .driver_info = UVC_QUIRK_PROBE_MINMAX | |
d732c44c | 2200 | | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, |
c0efd232 LP |
2201 | /* Generic USB Video Class */ |
2202 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, | |
2203 | {} | |
2204 | }; | |
2205 | ||
2206 | MODULE_DEVICE_TABLE(usb, uvc_ids); | |
2207 | ||
2208 | struct uvc_driver uvc_driver = { | |
2209 | .driver = { | |
2210 | .name = "uvcvideo", | |
2211 | .probe = uvc_probe, | |
2212 | .disconnect = uvc_disconnect, | |
2213 | .suspend = uvc_suspend, | |
2214 | .resume = uvc_resume, | |
9b0ae867 | 2215 | .reset_resume = uvc_reset_resume, |
c0efd232 LP |
2216 | .id_table = uvc_ids, |
2217 | .supports_autosuspend = 1, | |
2218 | }, | |
2219 | }; | |
2220 | ||
2221 | static int __init uvc_init(void) | |
2222 | { | |
2223 | int result; | |
2224 | ||
2225 | INIT_LIST_HEAD(&uvc_driver.devices); | |
2226 | INIT_LIST_HEAD(&uvc_driver.controls); | |
c0efd232 LP |
2227 | mutex_init(&uvc_driver.ctrl_mutex); |
2228 | ||
2229 | uvc_ctrl_init(); | |
2230 | ||
2231 | result = usb_register(&uvc_driver.driver); | |
2232 | if (result == 0) | |
2233 | printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); | |
2234 | return result; | |
2235 | } | |
2236 | ||
2237 | static void __exit uvc_cleanup(void) | |
2238 | { | |
2239 | usb_deregister(&uvc_driver.driver); | |
2240 | } | |
2241 | ||
2242 | module_init(uvc_init); | |
2243 | module_exit(uvc_cleanup); | |
2244 | ||
c0efd232 LP |
2245 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2246 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2247 | MODULE_LICENSE("GPL"); | |
2248 | MODULE_VERSION(DRIVER_VERSION); | |
f87086e3 | 2249 |