Commit | Line | Data |
---|---|---|
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> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
c0efd232 LP |
30 | #include <linux/usb.h> |
31 | #include <linux/videodev2.h> | |
32 | #include <linux/vmalloc.h> | |
33 | #include <linux/wait.h> | |
34 | #include <asm/atomic.h> | |
9bc6218d | 35 | #include <asm/unaligned.h> |
c0efd232 LP |
36 | |
37 | #include <media/v4l2-common.h> | |
38 | ||
39 | #include "uvcvideo.h" | |
40 | ||
41 | #define DRIVER_AUTHOR "Laurent Pinchart <laurent.pinchart@skynet.be>" | |
42 | #define DRIVER_DESC "USB Video Class driver" | |
43 | #ifndef DRIVER_VERSION | |
44 | #define DRIVER_VERSION "v0.1.0" | |
45 | #endif | |
46 | ||
310fe524 | 47 | unsigned int uvc_clock_param = CLOCK_MONOTONIC; |
0fbd8ee6 | 48 | unsigned int uvc_no_drop_param; |
73de3592 | 49 | static unsigned int uvc_quirks_param = -1; |
c0efd232 | 50 | unsigned int uvc_trace_param; |
b232a012 | 51 | unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; |
c0efd232 LP |
52 | |
53 | /* ------------------------------------------------------------------------ | |
2c2d264b | 54 | * Video formats |
c0efd232 LP |
55 | */ |
56 | ||
57 | static struct uvc_format_desc uvc_fmts[] = { | |
58 | { | |
59 | .name = "YUV 4:2:2 (YUYV)", | |
60 | .guid = UVC_GUID_FORMAT_YUY2, | |
61 | .fcc = V4L2_PIX_FMT_YUYV, | |
62 | }, | |
68f194e0 DR |
63 | { |
64 | .name = "YUV 4:2:2 (YUYV)", | |
65 | .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, | |
66 | .fcc = V4L2_PIX_FMT_YUYV, | |
67 | }, | |
c0efd232 LP |
68 | { |
69 | .name = "YUV 4:2:0 (NV12)", | |
70 | .guid = UVC_GUID_FORMAT_NV12, | |
71 | .fcc = V4L2_PIX_FMT_NV12, | |
72 | }, | |
73 | { | |
74 | .name = "MJPEG", | |
75 | .guid = UVC_GUID_FORMAT_MJPEG, | |
76 | .fcc = V4L2_PIX_FMT_MJPEG, | |
77 | }, | |
78 | { | |
79 | .name = "YVU 4:2:0 (YV12)", | |
80 | .guid = UVC_GUID_FORMAT_YV12, | |
81 | .fcc = V4L2_PIX_FMT_YVU420, | |
82 | }, | |
83 | { | |
84 | .name = "YUV 4:2:0 (I420)", | |
85 | .guid = UVC_GUID_FORMAT_I420, | |
86 | .fcc = V4L2_PIX_FMT_YUV420, | |
87 | }, | |
88 | { | |
89 | .name = "YUV 4:2:2 (UYVY)", | |
90 | .guid = UVC_GUID_FORMAT_UYVY, | |
91 | .fcc = V4L2_PIX_FMT_UYVY, | |
92 | }, | |
93 | { | |
94 | .name = "Greyscale", | |
95 | .guid = UVC_GUID_FORMAT_Y800, | |
96 | .fcc = V4L2_PIX_FMT_GREY, | |
97 | }, | |
98 | { | |
99 | .name = "RGB Bayer", | |
100 | .guid = UVC_GUID_FORMAT_BY8, | |
101 | .fcc = V4L2_PIX_FMT_SBGGR8, | |
102 | }, | |
103 | }; | |
104 | ||
105 | /* ------------------------------------------------------------------------ | |
106 | * Utility functions | |
107 | */ | |
108 | ||
109 | struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, | |
110 | __u8 epaddr) | |
111 | { | |
112 | struct usb_host_endpoint *ep; | |
113 | unsigned int i; | |
114 | ||
115 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
116 | ep = &alts->endpoint[i]; | |
117 | if (ep->desc.bEndpointAddress == epaddr) | |
118 | return ep; | |
119 | } | |
120 | ||
121 | return NULL; | |
122 | } | |
123 | ||
124 | static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) | |
125 | { | |
126 | unsigned int len = ARRAY_SIZE(uvc_fmts); | |
127 | unsigned int i; | |
128 | ||
129 | for (i = 0; i < len; ++i) { | |
130 | if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) | |
131 | return &uvc_fmts[i]; | |
132 | } | |
133 | ||
134 | return NULL; | |
135 | } | |
136 | ||
137 | static __u32 uvc_colorspace(const __u8 primaries) | |
138 | { | |
139 | static const __u8 colorprimaries[] = { | |
140 | 0, | |
141 | V4L2_COLORSPACE_SRGB, | |
142 | V4L2_COLORSPACE_470_SYSTEM_M, | |
143 | V4L2_COLORSPACE_470_SYSTEM_BG, | |
144 | V4L2_COLORSPACE_SMPTE170M, | |
145 | V4L2_COLORSPACE_SMPTE240M, | |
146 | }; | |
147 | ||
148 | if (primaries < ARRAY_SIZE(colorprimaries)) | |
149 | return colorprimaries[primaries]; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | /* Simplify a fraction using a simple continued fraction decomposition. The | |
155 | * idea here is to convert fractions such as 333333/10000000 to 1/30 using | |
156 | * 32 bit arithmetic only. The algorithm is not perfect and relies upon two | |
157 | * arbitrary parameters to remove non-significative terms from the simple | |
158 | * continued fraction decomposition. Using 8 and 333 for n_terms and threshold | |
159 | * respectively seems to give nice results. | |
160 | */ | |
161 | void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, | |
162 | unsigned int n_terms, unsigned int threshold) | |
163 | { | |
164 | uint32_t *an; | |
165 | uint32_t x, y, r; | |
166 | unsigned int i, n; | |
167 | ||
168 | an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); | |
169 | if (an == NULL) | |
170 | return; | |
171 | ||
172 | /* Convert the fraction to a simple continued fraction. See | |
173 | * http://mathforum.org/dr.math/faq/faq.fractions.html | |
174 | * Stop if the current term is bigger than or equal to the given | |
175 | * threshold. | |
176 | */ | |
177 | x = *numerator; | |
178 | y = *denominator; | |
179 | ||
180 | for (n = 0; n < n_terms && y != 0; ++n) { | |
181 | an[n] = x / y; | |
182 | if (an[n] >= threshold) { | |
183 | if (n < 2) | |
184 | n++; | |
185 | break; | |
186 | } | |
187 | ||
188 | r = x - an[n] * y; | |
189 | x = y; | |
190 | y = r; | |
191 | } | |
192 | ||
193 | /* Expand the simple continued fraction back to an integer fraction. */ | |
194 | x = 0; | |
195 | y = 1; | |
196 | ||
197 | for (i = n; i > 0; --i) { | |
198 | r = y; | |
199 | y = an[i-1] * y + x; | |
200 | x = r; | |
201 | } | |
202 | ||
203 | *numerator = y; | |
204 | *denominator = x; | |
205 | kfree(an); | |
206 | } | |
207 | ||
208 | /* Convert a fraction to a frame interval in 100ns multiples. The idea here is | |
209 | * to compute numerator / denominator * 10000000 using 32 bit fixed point | |
210 | * arithmetic only. | |
211 | */ | |
212 | uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) | |
213 | { | |
214 | uint32_t multiplier; | |
215 | ||
216 | /* Saturate the result if the operation would overflow. */ | |
217 | if (denominator == 0 || | |
218 | numerator/denominator >= ((uint32_t)-1)/10000000) | |
219 | return (uint32_t)-1; | |
220 | ||
221 | /* Divide both the denominator and the multiplier by two until | |
222 | * numerator * multiplier doesn't overflow. If anyone knows a better | |
223 | * algorithm please let me know. | |
224 | */ | |
225 | multiplier = 10000000; | |
226 | while (numerator > ((uint32_t)-1)/multiplier) { | |
227 | multiplier /= 2; | |
228 | denominator /= 2; | |
229 | } | |
230 | ||
231 | return denominator ? numerator * multiplier / denominator : 0; | |
232 | } | |
233 | ||
234 | /* ------------------------------------------------------------------------ | |
235 | * Terminal and unit management | |
236 | */ | |
237 | ||
238 | static struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) | |
239 | { | |
240 | struct uvc_entity *entity; | |
241 | ||
242 | list_for_each_entry(entity, &dev->entities, list) { | |
243 | if (entity->id == id) | |
244 | return entity; | |
245 | } | |
246 | ||
247 | return NULL; | |
248 | } | |
249 | ||
250 | static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, | |
251 | int id, struct uvc_entity *entity) | |
252 | { | |
253 | unsigned int i; | |
254 | ||
255 | if (entity == NULL) | |
256 | entity = list_entry(&dev->entities, struct uvc_entity, list); | |
257 | ||
258 | list_for_each_entry_continue(entity, &dev->entities, list) { | |
8ca5a639 LP |
259 | for (i = 0; i < entity->bNrInPins; ++i) |
260 | if (entity->baSourceID[i] == id) | |
c0efd232 | 261 | return entity; |
c0efd232 LP |
262 | } |
263 | ||
264 | return NULL; | |
265 | } | |
266 | ||
8e113595 LP |
267 | static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) |
268 | { | |
269 | struct uvc_streaming *stream; | |
270 | ||
271 | list_for_each_entry(stream, &dev->streams, list) { | |
272 | if (stream->header.bTerminalLink == id) | |
273 | return stream; | |
274 | } | |
275 | ||
276 | return NULL; | |
277 | } | |
278 | ||
c0efd232 | 279 | /* ------------------------------------------------------------------------ |
8e113595 | 280 | * Descriptors parsing |
c0efd232 LP |
281 | */ |
282 | ||
283 | static int uvc_parse_format(struct uvc_device *dev, | |
284 | struct uvc_streaming *streaming, struct uvc_format *format, | |
285 | __u32 **intervals, unsigned char *buffer, int buflen) | |
286 | { | |
287 | struct usb_interface *intf = streaming->intf; | |
288 | struct usb_host_interface *alts = intf->cur_altsetting; | |
289 | struct uvc_format_desc *fmtdesc; | |
290 | struct uvc_frame *frame; | |
291 | const unsigned char *start = buffer; | |
292 | unsigned int interval; | |
293 | unsigned int i, n; | |
294 | __u8 ftype; | |
295 | ||
296 | format->type = buffer[2]; | |
297 | format->index = buffer[3]; | |
298 | ||
299 | switch (buffer[2]) { | |
b482d923 LP |
300 | case UVC_VS_FORMAT_UNCOMPRESSED: |
301 | case UVC_VS_FORMAT_FRAME_BASED: | |
302 | n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; | |
233548a2 | 303 | if (buflen < n) { |
b2d9cc42 | 304 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
305 | "interface %d FORMAT error\n", |
306 | dev->udev->devnum, | |
307 | alts->desc.bInterfaceNumber); | |
308 | return -EINVAL; | |
309 | } | |
310 | ||
311 | /* Find the format descriptor from its GUID. */ | |
312 | fmtdesc = uvc_format_by_guid(&buffer[5]); | |
313 | ||
314 | if (fmtdesc != NULL) { | |
d0ebf307 | 315 | strlcpy(format->name, fmtdesc->name, |
c0efd232 LP |
316 | sizeof format->name); |
317 | format->fcc = fmtdesc->fcc; | |
318 | } else { | |
36bd883e LP |
319 | uvc_printk(KERN_INFO, "Unknown video format %pUl\n", |
320 | &buffer[5]); | |
321 | snprintf(format->name, sizeof(format->name), "%pUl\n", | |
322 | &buffer[5]); | |
c0efd232 LP |
323 | format->fcc = 0; |
324 | } | |
325 | ||
326 | format->bpp = buffer[21]; | |
b482d923 LP |
327 | if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { |
328 | ftype = UVC_VS_FRAME_UNCOMPRESSED; | |
c0efd232 | 329 | } else { |
b482d923 | 330 | ftype = UVC_VS_FRAME_FRAME_BASED; |
c0efd232 LP |
331 | if (buffer[27]) |
332 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
333 | } | |
334 | break; | |
335 | ||
b482d923 | 336 | case UVC_VS_FORMAT_MJPEG: |
c0efd232 | 337 | if (buflen < 11) { |
b2d9cc42 | 338 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
339 | "interface %d FORMAT error\n", |
340 | dev->udev->devnum, | |
341 | alts->desc.bInterfaceNumber); | |
342 | return -EINVAL; | |
343 | } | |
344 | ||
d0ebf307 | 345 | strlcpy(format->name, "MJPEG", sizeof format->name); |
c0efd232 LP |
346 | format->fcc = V4L2_PIX_FMT_MJPEG; |
347 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
348 | format->bpp = 0; | |
b482d923 | 349 | ftype = UVC_VS_FRAME_MJPEG; |
c0efd232 LP |
350 | break; |
351 | ||
b482d923 | 352 | case UVC_VS_FORMAT_DV: |
c0efd232 | 353 | if (buflen < 9) { |
b2d9cc42 | 354 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
355 | "interface %d FORMAT error\n", |
356 | dev->udev->devnum, | |
357 | alts->desc.bInterfaceNumber); | |
358 | return -EINVAL; | |
359 | } | |
360 | ||
361 | switch (buffer[8] & 0x7f) { | |
362 | case 0: | |
d0ebf307 | 363 | strlcpy(format->name, "SD-DV", sizeof format->name); |
c0efd232 LP |
364 | break; |
365 | case 1: | |
d0ebf307 | 366 | strlcpy(format->name, "SDL-DV", sizeof format->name); |
c0efd232 LP |
367 | break; |
368 | case 2: | |
d0ebf307 | 369 | strlcpy(format->name, "HD-DV", sizeof format->name); |
c0efd232 LP |
370 | break; |
371 | default: | |
b2d9cc42 | 372 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
373 | "interface %d: unknown DV format %u\n", |
374 | dev->udev->devnum, | |
375 | alts->desc.bInterfaceNumber, buffer[8]); | |
376 | return -EINVAL; | |
377 | } | |
378 | ||
d0ebf307 | 379 | strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", |
c0efd232 LP |
380 | sizeof format->name); |
381 | ||
382 | format->fcc = V4L2_PIX_FMT_DV; | |
383 | format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; | |
384 | format->bpp = 0; | |
385 | ftype = 0; | |
386 | ||
387 | /* Create a dummy frame descriptor. */ | |
388 | frame = &format->frame[0]; | |
389 | memset(&format->frame[0], 0, sizeof format->frame[0]); | |
390 | frame->bFrameIntervalType = 1; | |
391 | frame->dwDefaultFrameInterval = 1; | |
392 | frame->dwFrameInterval = *intervals; | |
393 | *(*intervals)++ = 1; | |
394 | format->nframes = 1; | |
395 | break; | |
396 | ||
b482d923 LP |
397 | case UVC_VS_FORMAT_MPEG2TS: |
398 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
399 | /* Not supported yet. */ |
400 | default: | |
b2d9cc42 | 401 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
402 | "interface %d unsupported format %u\n", |
403 | dev->udev->devnum, alts->desc.bInterfaceNumber, | |
404 | buffer[2]); | |
405 | return -EINVAL; | |
406 | } | |
407 | ||
408 | uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); | |
409 | ||
410 | buflen -= buffer[0]; | |
411 | buffer += buffer[0]; | |
412 | ||
413 | /* Parse the frame descriptors. Only uncompressed, MJPEG and frame | |
414 | * based formats have frame descriptors. | |
415 | */ | |
c4ed8c66 LP |
416 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
417 | buffer[2] == ftype) { | |
078f8947 | 418 | frame = &format->frame[format->nframes]; |
b482d923 | 419 | if (ftype != UVC_VS_FRAME_FRAME_BASED) |
c0efd232 LP |
420 | n = buflen > 25 ? buffer[25] : 0; |
421 | else | |
422 | n = buflen > 21 ? buffer[21] : 0; | |
423 | ||
424 | n = n ? n : 3; | |
425 | ||
426 | if (buflen < 26 + 4*n) { | |
b2d9cc42 | 427 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
428 | "interface %d FRAME error\n", dev->udev->devnum, |
429 | alts->desc.bInterfaceNumber); | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
433 | frame->bFrameIndex = buffer[3]; | |
434 | frame->bmCapabilities = buffer[4]; | |
9bc6218d MH |
435 | frame->wWidth = get_unaligned_le16(&buffer[5]); |
436 | frame->wHeight = get_unaligned_le16(&buffer[7]); | |
437 | frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); | |
438 | frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); | |
b482d923 | 439 | if (ftype != UVC_VS_FRAME_FRAME_BASED) { |
c0efd232 | 440 | frame->dwMaxVideoFrameBufferSize = |
9bc6218d | 441 | get_unaligned_le32(&buffer[17]); |
c0efd232 | 442 | frame->dwDefaultFrameInterval = |
9bc6218d | 443 | get_unaligned_le32(&buffer[21]); |
c0efd232 LP |
444 | frame->bFrameIntervalType = buffer[25]; |
445 | } else { | |
446 | frame->dwMaxVideoFrameBufferSize = 0; | |
447 | frame->dwDefaultFrameInterval = | |
9bc6218d | 448 | get_unaligned_le32(&buffer[17]); |
c0efd232 LP |
449 | frame->bFrameIntervalType = buffer[21]; |
450 | } | |
451 | frame->dwFrameInterval = *intervals; | |
452 | ||
453 | /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize | |
454 | * completely. Observed behaviours range from setting the | |
2c2d264b | 455 | * value to 1.1x the actual frame size to hardwiring the |
c0efd232 LP |
456 | * 16 low bits to 0. This results in a higher than necessary |
457 | * memory usage as well as a wrong image size information. For | |
458 | * uncompressed formats this can be fixed by computing the | |
459 | * value from the frame size. | |
460 | */ | |
461 | if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) | |
462 | frame->dwMaxVideoFrameBufferSize = format->bpp | |
463 | * frame->wWidth * frame->wHeight / 8; | |
464 | ||
465 | /* Some bogus devices report dwMinFrameInterval equal to | |
466 | * dwMaxFrameInterval and have dwFrameIntervalStep set to | |
467 | * zero. Setting all null intervals to 1 fixes the problem and | |
2c2d264b | 468 | * some other divisions by zero that could happen. |
c0efd232 LP |
469 | */ |
470 | for (i = 0; i < n; ++i) { | |
9bc6218d | 471 | interval = get_unaligned_le32(&buffer[26+4*i]); |
c0efd232 LP |
472 | *(*intervals)++ = interval ? interval : 1; |
473 | } | |
474 | ||
475 | /* Make sure that the default frame interval stays between | |
476 | * the boundaries. | |
477 | */ | |
478 | n -= frame->bFrameIntervalType ? 1 : 2; | |
479 | frame->dwDefaultFrameInterval = | |
480 | min(frame->dwFrameInterval[n], | |
481 | max(frame->dwFrameInterval[0], | |
482 | frame->dwDefaultFrameInterval)); | |
483 | ||
484 | uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", | |
485 | frame->wWidth, frame->wHeight, | |
486 | 10000000/frame->dwDefaultFrameInterval, | |
487 | (100000000/frame->dwDefaultFrameInterval)%10); | |
488 | ||
078f8947 | 489 | format->nframes++; |
c0efd232 LP |
490 | buflen -= buffer[0]; |
491 | buffer += buffer[0]; | |
492 | } | |
493 | ||
c4ed8c66 LP |
494 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
495 | buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { | |
c0efd232 LP |
496 | buflen -= buffer[0]; |
497 | buffer += buffer[0]; | |
498 | } | |
499 | ||
c4ed8c66 LP |
500 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
501 | buffer[2] == UVC_VS_COLORFORMAT) { | |
c0efd232 | 502 | if (buflen < 6) { |
b2d9cc42 | 503 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
504 | "interface %d COLORFORMAT error\n", |
505 | dev->udev->devnum, | |
506 | alts->desc.bInterfaceNumber); | |
507 | return -EINVAL; | |
508 | } | |
509 | ||
510 | format->colorspace = uvc_colorspace(buffer[3]); | |
511 | ||
512 | buflen -= buffer[0]; | |
513 | buffer += buffer[0]; | |
514 | } | |
515 | ||
516 | return buffer - start; | |
517 | } | |
518 | ||
519 | static int uvc_parse_streaming(struct uvc_device *dev, | |
520 | struct usb_interface *intf) | |
521 | { | |
522 | struct uvc_streaming *streaming = NULL; | |
523 | struct uvc_format *format; | |
524 | struct uvc_frame *frame; | |
525 | struct usb_host_interface *alts = &intf->altsetting[0]; | |
526 | unsigned char *_buffer, *buffer = alts->extra; | |
527 | int _buflen, buflen = alts->extralen; | |
528 | unsigned int nformats = 0, nframes = 0, nintervals = 0; | |
529 | unsigned int size, i, n, p; | |
530 | __u32 *interval; | |
531 | __u16 psize; | |
532 | int ret = -EINVAL; | |
533 | ||
534 | if (intf->cur_altsetting->desc.bInterfaceSubClass | |
b482d923 | 535 | != UVC_SC_VIDEOSTREAMING) { |
c0efd232 LP |
536 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " |
537 | "video streaming interface\n", dev->udev->devnum, | |
538 | intf->altsetting[0].desc.bInterfaceNumber); | |
539 | return -EINVAL; | |
540 | } | |
541 | ||
542 | if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { | |
543 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " | |
544 | "claimed\n", dev->udev->devnum, | |
545 | intf->altsetting[0].desc.bInterfaceNumber); | |
546 | return -EINVAL; | |
547 | } | |
548 | ||
549 | streaming = kzalloc(sizeof *streaming, GFP_KERNEL); | |
550 | if (streaming == NULL) { | |
551 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
552 | return -EINVAL; | |
553 | } | |
554 | ||
555 | mutex_init(&streaming->mutex); | |
35f02a68 | 556 | streaming->dev = dev; |
c0efd232 LP |
557 | streaming->intf = usb_get_intf(intf); |
558 | streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
559 | ||
560 | /* The Pico iMage webcam has its class-specific interface descriptors | |
561 | * after the endpoint descriptors. | |
562 | */ | |
563 | if (buflen == 0) { | |
564 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
565 | struct usb_host_endpoint *ep = &alts->endpoint[i]; | |
566 | ||
567 | if (ep->extralen == 0) | |
568 | continue; | |
569 | ||
570 | if (ep->extralen > 2 && | |
571 | ep->extra[1] == USB_DT_CS_INTERFACE) { | |
572 | uvc_trace(UVC_TRACE_DESCR, "trying extra data " | |
573 | "from endpoint %u.\n", i); | |
574 | buffer = alts->endpoint[i].extra; | |
575 | buflen = alts->endpoint[i].extralen; | |
576 | break; | |
577 | } | |
578 | } | |
579 | } | |
580 | ||
581 | /* Skip the standard interface descriptors. */ | |
582 | while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { | |
583 | buflen -= buffer[0]; | |
584 | buffer += buffer[0]; | |
585 | } | |
586 | ||
587 | if (buflen <= 2) { | |
588 | uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " | |
589 | "interface descriptors found.\n"); | |
590 | goto error; | |
591 | } | |
592 | ||
593 | /* Parse the header descriptor. */ | |
ff924203 | 594 | switch (buffer[2]) { |
b482d923 | 595 | case UVC_VS_OUTPUT_HEADER: |
ff924203 LP |
596 | streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
597 | size = 9; | |
598 | break; | |
599 | ||
b482d923 | 600 | case UVC_VS_INPUT_HEADER: |
ff924203 LP |
601 | streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
602 | size = 13; | |
603 | break; | |
604 | ||
605 | default: | |
c0efd232 | 606 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
ff924203 LP |
607 | "%d HEADER descriptor not found.\n", dev->udev->devnum, |
608 | alts->desc.bInterfaceNumber); | |
c0efd232 | 609 | goto error; |
ff924203 | 610 | } |
c0efd232 | 611 | |
ff924203 LP |
612 | p = buflen >= 4 ? buffer[3] : 0; |
613 | n = buflen >= size ? buffer[size-1] : 0; | |
614 | ||
615 | if (buflen < size + p*n) { | |
616 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " | |
617 | "interface %d HEADER descriptor is invalid.\n", | |
618 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
619 | goto error; | |
620 | } | |
c0efd232 | 621 | |
ff924203 LP |
622 | streaming->header.bNumFormats = p; |
623 | streaming->header.bEndpointAddress = buffer[6]; | |
b482d923 | 624 | if (buffer[2] == UVC_VS_INPUT_HEADER) { |
c0efd232 LP |
625 | streaming->header.bmInfo = buffer[7]; |
626 | streaming->header.bTerminalLink = buffer[8]; | |
627 | streaming->header.bStillCaptureMethod = buffer[9]; | |
628 | streaming->header.bTriggerSupport = buffer[10]; | |
629 | streaming->header.bTriggerUsage = buffer[11]; | |
c0efd232 | 630 | } else { |
ff924203 LP |
631 | streaming->header.bTerminalLink = buffer[7]; |
632 | } | |
633 | streaming->header.bControlSize = n; | |
634 | ||
635 | streaming->header.bmaControls = kmalloc(p*n, GFP_KERNEL); | |
636 | if (streaming->header.bmaControls == NULL) { | |
637 | ret = -ENOMEM; | |
c0efd232 LP |
638 | goto error; |
639 | } | |
640 | ||
ff924203 LP |
641 | memcpy(streaming->header.bmaControls, &buffer[size], p*n); |
642 | ||
c0efd232 LP |
643 | buflen -= buffer[0]; |
644 | buffer += buffer[0]; | |
645 | ||
646 | _buffer = buffer; | |
647 | _buflen = buflen; | |
648 | ||
649 | /* Count the format and frame descriptors. */ | |
042e143e | 650 | while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 651 | switch (_buffer[2]) { |
b482d923 LP |
652 | case UVC_VS_FORMAT_UNCOMPRESSED: |
653 | case UVC_VS_FORMAT_MJPEG: | |
654 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
655 | nformats++; |
656 | break; | |
657 | ||
b482d923 | 658 | case UVC_VS_FORMAT_DV: |
c0efd232 LP |
659 | /* DV format has no frame descriptor. We will create a |
660 | * dummy frame descriptor with a dummy frame interval. | |
661 | */ | |
662 | nformats++; | |
663 | nframes++; | |
664 | nintervals++; | |
665 | break; | |
666 | ||
b482d923 LP |
667 | case UVC_VS_FORMAT_MPEG2TS: |
668 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
669 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
670 | "interface %d FORMAT %u is not supported.\n", | |
671 | dev->udev->devnum, | |
672 | alts->desc.bInterfaceNumber, _buffer[2]); | |
673 | break; | |
674 | ||
b482d923 LP |
675 | case UVC_VS_FRAME_UNCOMPRESSED: |
676 | case UVC_VS_FRAME_MJPEG: | |
c0efd232 LP |
677 | nframes++; |
678 | if (_buflen > 25) | |
679 | nintervals += _buffer[25] ? _buffer[25] : 3; | |
680 | break; | |
681 | ||
b482d923 | 682 | case UVC_VS_FRAME_FRAME_BASED: |
c0efd232 LP |
683 | nframes++; |
684 | if (_buflen > 21) | |
685 | nintervals += _buffer[21] ? _buffer[21] : 3; | |
686 | break; | |
687 | } | |
688 | ||
689 | _buflen -= _buffer[0]; | |
690 | _buffer += _buffer[0]; | |
691 | } | |
692 | ||
693 | if (nformats == 0) { | |
694 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
695 | "%d has no supported formats defined.\n", | |
696 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
697 | goto error; | |
698 | } | |
699 | ||
700 | size = nformats * sizeof *format + nframes * sizeof *frame | |
701 | + nintervals * sizeof *interval; | |
702 | format = kzalloc(size, GFP_KERNEL); | |
703 | if (format == NULL) { | |
704 | ret = -ENOMEM; | |
705 | goto error; | |
706 | } | |
707 | ||
708 | frame = (struct uvc_frame *)&format[nformats]; | |
709 | interval = (__u32 *)&frame[nframes]; | |
710 | ||
711 | streaming->format = format; | |
712 | streaming->nformats = nformats; | |
713 | ||
714 | /* Parse the format descriptors. */ | |
042e143e | 715 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 716 | switch (buffer[2]) { |
b482d923 LP |
717 | case UVC_VS_FORMAT_UNCOMPRESSED: |
718 | case UVC_VS_FORMAT_MJPEG: | |
719 | case UVC_VS_FORMAT_DV: | |
720 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
721 | format->frame = frame; |
722 | ret = uvc_parse_format(dev, streaming, format, | |
723 | &interval, buffer, buflen); | |
724 | if (ret < 0) | |
725 | goto error; | |
726 | ||
727 | frame += format->nframes; | |
728 | format++; | |
729 | ||
730 | buflen -= ret; | |
731 | buffer += ret; | |
732 | continue; | |
733 | ||
734 | default: | |
735 | break; | |
736 | } | |
737 | ||
738 | buflen -= buffer[0]; | |
739 | buffer += buffer[0]; | |
740 | } | |
741 | ||
c4ed8c66 LP |
742 | if (buflen) |
743 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
744 | "%d has %u bytes of trailing descriptor garbage.\n", | |
745 | dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); | |
746 | ||
c0efd232 LP |
747 | /* Parse the alternate settings to find the maximum bandwidth. */ |
748 | for (i = 0; i < intf->num_altsetting; ++i) { | |
749 | struct usb_host_endpoint *ep; | |
750 | alts = &intf->altsetting[i]; | |
751 | ep = uvc_find_endpoint(alts, | |
752 | streaming->header.bEndpointAddress); | |
753 | if (ep == NULL) | |
754 | continue; | |
755 | ||
756 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); | |
757 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
758 | if (psize > streaming->maxpsize) | |
759 | streaming->maxpsize = psize; | |
760 | } | |
761 | ||
35f02a68 | 762 | list_add_tail(&streaming->list, &dev->streams); |
c0efd232 LP |
763 | return 0; |
764 | ||
765 | error: | |
766 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
767 | usb_put_intf(intf); | |
768 | kfree(streaming->format); | |
769 | kfree(streaming->header.bmaControls); | |
770 | kfree(streaming); | |
771 | return ret; | |
772 | } | |
773 | ||
8ca5a639 LP |
774 | static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, |
775 | unsigned int num_pads, unsigned int extra_size) | |
776 | { | |
777 | struct uvc_entity *entity; | |
778 | unsigned int num_inputs; | |
779 | unsigned int size; | |
780 | ||
781 | num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; | |
782 | size = sizeof(*entity) + extra_size + num_inputs; | |
783 | entity = kzalloc(size, GFP_KERNEL); | |
784 | if (entity == NULL) | |
785 | return NULL; | |
786 | ||
787 | entity->id = id; | |
788 | entity->type = type; | |
789 | ||
790 | entity->bNrInPins = num_inputs; | |
791 | entity->baSourceID = ((__u8 *)entity) + sizeof(*entity) + extra_size; | |
792 | ||
793 | return entity; | |
794 | } | |
795 | ||
c0efd232 LP |
796 | /* Parse vendor-specific extensions. */ |
797 | static int uvc_parse_vendor_control(struct uvc_device *dev, | |
798 | const unsigned char *buffer, int buflen) | |
799 | { | |
800 | struct usb_device *udev = dev->udev; | |
801 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
802 | struct uvc_entity *unit; | |
803 | unsigned int n, p; | |
804 | int handled = 0; | |
805 | ||
806 | switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { | |
807 | case 0x046d: /* Logitech */ | |
808 | if (buffer[1] != 0x41 || buffer[2] != 0x01) | |
809 | break; | |
810 | ||
811 | /* Logitech implements several vendor specific functions | |
812 | * through vendor specific extension units (LXU). | |
813 | * | |
814 | * The LXU descriptors are similar to XU descriptors | |
815 | * (see "USB Device Video Class for Video Devices", section | |
816 | * 3.7.2.6 "Extension Unit Descriptor") with the following | |
817 | * differences: | |
818 | * | |
819 | * ---------------------------------------------------------- | |
820 | * 0 bLength 1 Number | |
821 | * Size of this descriptor, in bytes: 24+p+n*2 | |
822 | * ---------------------------------------------------------- | |
823 | * 23+p+n bmControlsType N Bitmap | |
824 | * Individual bits in the set are defined: | |
825 | * 0: Absolute | |
826 | * 1: Relative | |
827 | * | |
828 | * This bitset is mapped exactly the same as bmControls. | |
829 | * ---------------------------------------------------------- | |
830 | * 23+p+n*2 bReserved 1 Boolean | |
831 | * ---------------------------------------------------------- | |
832 | * 24+p+n*2 iExtension 1 Index | |
833 | * Index of a string descriptor that describes this | |
834 | * extension unit. | |
835 | * ---------------------------------------------------------- | |
836 | */ | |
837 | p = buflen >= 22 ? buffer[21] : 0; | |
838 | n = buflen >= 25 + p ? buffer[22+p] : 0; | |
839 | ||
840 | if (buflen < 25 + p + 2*n) { | |
841 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
842 | "interface %d EXTENSION_UNIT error\n", | |
843 | udev->devnum, alts->desc.bInterfaceNumber); | |
844 | break; | |
845 | } | |
846 | ||
8ca5a639 LP |
847 | unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], |
848 | p + 1, 2*n); | |
c0efd232 LP |
849 | if (unit == NULL) |
850 | return -ENOMEM; | |
851 | ||
c0efd232 LP |
852 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
853 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 854 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 855 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 LP |
856 | unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); |
857 | unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) | |
858 | + n; | |
c0efd232 LP |
859 | memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); |
860 | ||
861 | if (buffer[24+p+2*n] != 0) | |
862 | usb_string(udev, buffer[24+p+2*n], unit->name, | |
863 | sizeof unit->name); | |
864 | else | |
865 | sprintf(unit->name, "Extension %u", buffer[3]); | |
866 | ||
867 | list_add_tail(&unit->list, &dev->entities); | |
868 | handled = 1; | |
869 | break; | |
870 | } | |
871 | ||
872 | return handled; | |
873 | } | |
874 | ||
875 | static int uvc_parse_standard_control(struct uvc_device *dev, | |
876 | const unsigned char *buffer, int buflen) | |
877 | { | |
878 | struct usb_device *udev = dev->udev; | |
879 | struct uvc_entity *unit, *term; | |
880 | struct usb_interface *intf; | |
881 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
882 | unsigned int i, n, p, len; | |
883 | __u16 type; | |
884 | ||
885 | switch (buffer[2]) { | |
b482d923 | 886 | case UVC_VC_HEADER: |
c0efd232 LP |
887 | n = buflen >= 12 ? buffer[11] : 0; |
888 | ||
889 | if (buflen < 12 || buflen < 12 + n) { | |
890 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
891 | "interface %d HEADER error\n", udev->devnum, | |
892 | alts->desc.bInterfaceNumber); | |
893 | return -EINVAL; | |
894 | } | |
895 | ||
9bc6218d MH |
896 | dev->uvc_version = get_unaligned_le16(&buffer[3]); |
897 | dev->clock_frequency = get_unaligned_le32(&buffer[7]); | |
c0efd232 LP |
898 | |
899 | /* Parse all USB Video Streaming interfaces. */ | |
900 | for (i = 0; i < n; ++i) { | |
901 | intf = usb_ifnum_to_if(udev, buffer[12+i]); | |
902 | if (intf == NULL) { | |
903 | uvc_trace(UVC_TRACE_DESCR, "device %d " | |
904 | "interface %d doesn't exists\n", | |
905 | udev->devnum, i); | |
906 | continue; | |
907 | } | |
908 | ||
909 | uvc_parse_streaming(dev, intf); | |
910 | } | |
911 | break; | |
912 | ||
b482d923 | 913 | case UVC_VC_INPUT_TERMINAL: |
c0efd232 LP |
914 | if (buflen < 8) { |
915 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
916 | "interface %d INPUT_TERMINAL error\n", | |
917 | udev->devnum, alts->desc.bInterfaceNumber); | |
918 | return -EINVAL; | |
919 | } | |
920 | ||
921 | /* Make sure the terminal type MSB is not null, otherwise it | |
922 | * could be confused with a unit. | |
923 | */ | |
9bc6218d | 924 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
925 | if ((type & 0xff00) == 0) { |
926 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
927 | "interface %d INPUT_TERMINAL %d has invalid " | |
928 | "type 0x%04x, skipping\n", udev->devnum, | |
929 | alts->desc.bInterfaceNumber, | |
930 | buffer[3], type); | |
931 | return 0; | |
932 | } | |
933 | ||
934 | n = 0; | |
935 | p = 0; | |
936 | len = 8; | |
937 | ||
b482d923 | 938 | if (type == UVC_ITT_CAMERA) { |
c0efd232 LP |
939 | n = buflen >= 15 ? buffer[14] : 0; |
940 | len = 15; | |
941 | ||
b482d923 | 942 | } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
c0efd232 LP |
943 | n = buflen >= 9 ? buffer[8] : 0; |
944 | p = buflen >= 10 + n ? buffer[9+n] : 0; | |
945 | len = 10; | |
946 | } | |
947 | ||
948 | if (buflen < len + n + p) { | |
949 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
950 | "interface %d INPUT_TERMINAL error\n", | |
951 | udev->devnum, alts->desc.bInterfaceNumber); | |
952 | return -EINVAL; | |
953 | } | |
954 | ||
8ca5a639 LP |
955 | term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], |
956 | 1, n + p); | |
c0efd232 LP |
957 | if (term == NULL) |
958 | return -ENOMEM; | |
959 | ||
b482d923 | 960 | if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { |
c0efd232 LP |
961 | term->camera.bControlSize = n; |
962 | term->camera.bmControls = (__u8 *)term + sizeof *term; | |
963 | term->camera.wObjectiveFocalLengthMin = | |
9bc6218d | 964 | get_unaligned_le16(&buffer[8]); |
c0efd232 | 965 | term->camera.wObjectiveFocalLengthMax = |
9bc6218d | 966 | get_unaligned_le16(&buffer[10]); |
c0efd232 | 967 | term->camera.wOcularFocalLength = |
9bc6218d | 968 | get_unaligned_le16(&buffer[12]); |
c0efd232 | 969 | memcpy(term->camera.bmControls, &buffer[15], n); |
b482d923 LP |
970 | } else if (UVC_ENTITY_TYPE(term) == |
971 | UVC_ITT_MEDIA_TRANSPORT_INPUT) { | |
c0efd232 LP |
972 | term->media.bControlSize = n; |
973 | term->media.bmControls = (__u8 *)term + sizeof *term; | |
974 | term->media.bTransportModeSize = p; | |
975 | term->media.bmTransportModes = (__u8 *)term | |
976 | + sizeof *term + n; | |
977 | memcpy(term->media.bmControls, &buffer[9], n); | |
978 | memcpy(term->media.bmTransportModes, &buffer[10+n], p); | |
979 | } | |
980 | ||
981 | if (buffer[7] != 0) | |
982 | usb_string(udev, buffer[7], term->name, | |
983 | sizeof term->name); | |
b482d923 | 984 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) |
c0efd232 | 985 | sprintf(term->name, "Camera %u", buffer[3]); |
b482d923 | 986 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) |
c0efd232 LP |
987 | sprintf(term->name, "Media %u", buffer[3]); |
988 | else | |
989 | sprintf(term->name, "Input %u", buffer[3]); | |
990 | ||
991 | list_add_tail(&term->list, &dev->entities); | |
992 | break; | |
993 | ||
b482d923 | 994 | case UVC_VC_OUTPUT_TERMINAL: |
c0efd232 LP |
995 | if (buflen < 9) { |
996 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
997 | "interface %d OUTPUT_TERMINAL error\n", | |
998 | udev->devnum, alts->desc.bInterfaceNumber); | |
999 | return -EINVAL; | |
1000 | } | |
1001 | ||
1002 | /* Make sure the terminal type MSB is not null, otherwise it | |
1003 | * could be confused with a unit. | |
1004 | */ | |
9bc6218d | 1005 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
1006 | if ((type & 0xff00) == 0) { |
1007 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1008 | "interface %d OUTPUT_TERMINAL %d has invalid " | |
1009 | "type 0x%04x, skipping\n", udev->devnum, | |
1010 | alts->desc.bInterfaceNumber, buffer[3], type); | |
1011 | return 0; | |
1012 | } | |
1013 | ||
8ca5a639 LP |
1014 | term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], |
1015 | 1, 0); | |
c0efd232 LP |
1016 | if (term == NULL) |
1017 | return -ENOMEM; | |
1018 | ||
8ca5a639 | 1019 | memcpy(term->baSourceID, &buffer[7], 1); |
c0efd232 LP |
1020 | |
1021 | if (buffer[8] != 0) | |
1022 | usb_string(udev, buffer[8], term->name, | |
1023 | sizeof term->name); | |
1024 | else | |
1025 | sprintf(term->name, "Output %u", buffer[3]); | |
1026 | ||
1027 | list_add_tail(&term->list, &dev->entities); | |
1028 | break; | |
1029 | ||
b482d923 | 1030 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1031 | p = buflen >= 5 ? buffer[4] : 0; |
1032 | ||
1033 | if (buflen < 5 || buflen < 6 + p) { | |
1034 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1035 | "interface %d SELECTOR_UNIT error\n", | |
1036 | udev->devnum, alts->desc.bInterfaceNumber); | |
1037 | return -EINVAL; | |
1038 | } | |
1039 | ||
8ca5a639 | 1040 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); |
c0efd232 LP |
1041 | if (unit == NULL) |
1042 | return -ENOMEM; | |
1043 | ||
8ca5a639 | 1044 | memcpy(unit->baSourceID, &buffer[5], p); |
c0efd232 LP |
1045 | |
1046 | if (buffer[5+p] != 0) | |
1047 | usb_string(udev, buffer[5+p], unit->name, | |
1048 | sizeof unit->name); | |
1049 | else | |
1050 | sprintf(unit->name, "Selector %u", buffer[3]); | |
1051 | ||
1052 | list_add_tail(&unit->list, &dev->entities); | |
1053 | break; | |
1054 | ||
b482d923 | 1055 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1056 | n = buflen >= 8 ? buffer[7] : 0; |
1057 | p = dev->uvc_version >= 0x0110 ? 10 : 9; | |
1058 | ||
1059 | if (buflen < p + n) { | |
1060 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1061 | "interface %d PROCESSING_UNIT error\n", | |
1062 | udev->devnum, alts->desc.bInterfaceNumber); | |
1063 | return -EINVAL; | |
1064 | } | |
1065 | ||
8ca5a639 | 1066 | unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); |
c0efd232 LP |
1067 | if (unit == NULL) |
1068 | return -ENOMEM; | |
1069 | ||
8ca5a639 | 1070 | memcpy(unit->baSourceID, &buffer[4], 1); |
c0efd232 | 1071 | unit->processing.wMaxMultiplier = |
9bc6218d | 1072 | get_unaligned_le16(&buffer[5]); |
c0efd232 LP |
1073 | unit->processing.bControlSize = buffer[7]; |
1074 | unit->processing.bmControls = (__u8 *)unit + sizeof *unit; | |
1075 | memcpy(unit->processing.bmControls, &buffer[8], n); | |
1076 | if (dev->uvc_version >= 0x0110) | |
1077 | unit->processing.bmVideoStandards = buffer[9+n]; | |
1078 | ||
1079 | if (buffer[8+n] != 0) | |
1080 | usb_string(udev, buffer[8+n], unit->name, | |
1081 | sizeof unit->name); | |
1082 | else | |
1083 | sprintf(unit->name, "Processing %u", buffer[3]); | |
1084 | ||
1085 | list_add_tail(&unit->list, &dev->entities); | |
1086 | break; | |
1087 | ||
b482d923 | 1088 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1089 | p = buflen >= 22 ? buffer[21] : 0; |
1090 | n = buflen >= 24 + p ? buffer[22+p] : 0; | |
1091 | ||
1092 | if (buflen < 24 + p + n) { | |
1093 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1094 | "interface %d EXTENSION_UNIT error\n", | |
1095 | udev->devnum, alts->desc.bInterfaceNumber); | |
1096 | return -EINVAL; | |
1097 | } | |
1098 | ||
8ca5a639 | 1099 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); |
c0efd232 LP |
1100 | if (unit == NULL) |
1101 | return -ENOMEM; | |
1102 | ||
c0efd232 LP |
1103 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
1104 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 1105 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 1106 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 | 1107 | unit->extension.bmControls = (__u8 *)unit + sizeof *unit; |
c0efd232 LP |
1108 | memcpy(unit->extension.bmControls, &buffer[23+p], n); |
1109 | ||
1110 | if (buffer[23+p+n] != 0) | |
1111 | usb_string(udev, buffer[23+p+n], unit->name, | |
1112 | sizeof unit->name); | |
1113 | else | |
1114 | sprintf(unit->name, "Extension %u", buffer[3]); | |
1115 | ||
1116 | list_add_tail(&unit->list, &dev->entities); | |
1117 | break; | |
1118 | ||
1119 | default: | |
1120 | uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " | |
1121 | "descriptor (%u)\n", buffer[2]); | |
1122 | break; | |
1123 | } | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | static int uvc_parse_control(struct uvc_device *dev) | |
1129 | { | |
1130 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
1131 | unsigned char *buffer = alts->extra; | |
1132 | int buflen = alts->extralen; | |
1133 | int ret; | |
1134 | ||
1135 | /* Parse the default alternate setting only, as the UVC specification | |
1136 | * defines a single alternate setting, the default alternate setting | |
1137 | * zero. | |
1138 | */ | |
1139 | ||
1140 | while (buflen > 2) { | |
1141 | if (uvc_parse_vendor_control(dev, buffer, buflen) || | |
1142 | buffer[1] != USB_DT_CS_INTERFACE) | |
1143 | goto next_descriptor; | |
1144 | ||
1145 | if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) | |
1146 | return ret; | |
1147 | ||
1148 | next_descriptor: | |
1149 | buflen -= buffer[0]; | |
1150 | buffer += buffer[0]; | |
1151 | } | |
1152 | ||
538e7a00 LP |
1153 | /* Check if the optional status endpoint is present. Built-in iSight |
1154 | * webcams have an interrupt endpoint but spit proprietary data that | |
1155 | * don't conform to the UVC status endpoint messages. Don't try to | |
1156 | * handle the interrupt endpoint for those cameras. | |
1157 | */ | |
1158 | if (alts->desc.bNumEndpoints == 1 && | |
1159 | !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { | |
c0efd232 LP |
1160 | struct usb_host_endpoint *ep = &alts->endpoint[0]; |
1161 | struct usb_endpoint_descriptor *desc = &ep->desc; | |
1162 | ||
1163 | if (usb_endpoint_is_int_in(desc) && | |
1164 | le16_to_cpu(desc->wMaxPacketSize) >= 8 && | |
1165 | desc->bInterval != 0) { | |
1166 | uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " | |
1167 | "(addr %02x).\n", desc->bEndpointAddress); | |
1168 | dev->int_ep = ep; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | /* ------------------------------------------------------------------------ | |
8e113595 | 1176 | * UVC device scan |
c0efd232 LP |
1177 | */ |
1178 | ||
c0efd232 LP |
1179 | /* |
1180 | * Scan the UVC descriptors to locate a chain starting at an Output Terminal | |
1181 | * and containing the following units: | |
1182 | * | |
8e113595 | 1183 | * - one or more Output Terminals (USB Streaming or Display) |
c0efd232 | 1184 | * - zero or one Processing Unit |
8e113595 | 1185 | * - zero, one or more single-input Selector Units |
c0efd232 LP |
1186 | * - zero or one multiple-input Selector Units, provided all inputs are |
1187 | * connected to input terminals | |
1188 | * - zero, one or mode single-input Extension Units | |
2c2d264b | 1189 | * - one or more Input Terminals (Camera, External or USB Streaming) |
c0efd232 | 1190 | * |
8e113595 LP |
1191 | * The terminal and units must match on of the following structures: |
1192 | * | |
1193 | * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) | |
1194 | * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... | |
1195 | * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) | |
1196 | * | |
1197 | * +---------+ +---------+ -> OTT_*(0) | |
1198 | * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... | |
1199 | * +---------+ +---------+ -> OTT_*(n) | |
1200 | * | |
1201 | * The Processing Unit and Extension Units can be in any order. Additional | |
1202 | * Extension Units connected to the main chain as single-unit branches are | |
1203 | * also supported. Single-input Selector Units are ignored. | |
c0efd232 | 1204 | */ |
8e113595 | 1205 | static int uvc_scan_chain_entity(struct uvc_video_chain *chain, |
c0efd232 LP |
1206 | struct uvc_entity *entity) |
1207 | { | |
1208 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1209 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1210 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1211 | printk(" <- XU %d", entity->id); | |
1212 | ||
8ca5a639 | 1213 | if (entity->bNrInPins != 1) { |
c0efd232 LP |
1214 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " |
1215 | "than 1 input pin.\n", entity->id); | |
1216 | return -1; | |
1217 | } | |
1218 | ||
c0efd232 LP |
1219 | break; |
1220 | ||
b482d923 | 1221 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1222 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1223 | printk(" <- PU %d", entity->id); | |
1224 | ||
8e113595 | 1225 | if (chain->processing != NULL) { |
c0efd232 LP |
1226 | uvc_trace(UVC_TRACE_DESCR, "Found multiple " |
1227 | "Processing Units in chain.\n"); | |
1228 | return -1; | |
1229 | } | |
1230 | ||
8e113595 | 1231 | chain->processing = entity; |
c0efd232 LP |
1232 | break; |
1233 | ||
b482d923 | 1234 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1235 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1236 | printk(" <- SU %d", entity->id); | |
1237 | ||
1238 | /* Single-input selector units are ignored. */ | |
8ca5a639 | 1239 | if (entity->bNrInPins == 1) |
c0efd232 LP |
1240 | break; |
1241 | ||
8e113595 | 1242 | if (chain->selector != NULL) { |
c0efd232 LP |
1243 | uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " |
1244 | "Units in chain.\n"); | |
1245 | return -1; | |
1246 | } | |
1247 | ||
8e113595 | 1248 | chain->selector = entity; |
c0efd232 LP |
1249 | break; |
1250 | ||
b482d923 LP |
1251 | case UVC_ITT_VENDOR_SPECIFIC: |
1252 | case UVC_ITT_CAMERA: | |
1253 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
c0efd232 LP |
1254 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1255 | printk(" <- IT %d\n", entity->id); | |
1256 | ||
c0efd232 LP |
1257 | break; |
1258 | ||
b482d923 | 1259 | case UVC_TT_STREAMING: |
4057ac6c LP |
1260 | if (UVC_ENTITY_IS_ITERM(entity)) { |
1261 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1262 | printk(" <- IT %d\n", entity->id); | |
1263 | } else { | |
1264 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1265 | printk(" OT %d", entity->id); | |
ff924203 LP |
1266 | } |
1267 | ||
ff924203 LP |
1268 | break; |
1269 | ||
c0efd232 LP |
1270 | default: |
1271 | uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " | |
1272 | "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); | |
1273 | return -1; | |
1274 | } | |
1275 | ||
6241d8ca | 1276 | list_add_tail(&entity->chain, &chain->entities); |
c0efd232 LP |
1277 | return 0; |
1278 | } | |
1279 | ||
8e113595 | 1280 | static int uvc_scan_chain_forward(struct uvc_video_chain *chain, |
c0efd232 LP |
1281 | struct uvc_entity *entity, struct uvc_entity *prev) |
1282 | { | |
1283 | struct uvc_entity *forward; | |
1284 | int found; | |
1285 | ||
1286 | /* Forward scan */ | |
1287 | forward = NULL; | |
1288 | found = 0; | |
1289 | ||
1290 | while (1) { | |
8e113595 | 1291 | forward = uvc_entity_by_reference(chain->dev, entity->id, |
c0efd232 LP |
1292 | forward); |
1293 | if (forward == NULL) | |
1294 | break; | |
8e113595 | 1295 | if (forward == prev) |
c0efd232 LP |
1296 | continue; |
1297 | ||
8e113595 LP |
1298 | switch (UVC_ENTITY_TYPE(forward)) { |
1299 | case UVC_VC_EXTENSION_UNIT: | |
8ca5a639 | 1300 | if (forward->bNrInPins != 1) { |
8e113595 LP |
1301 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " |
1302 | "has more than 1 input pin.\n", | |
1303 | entity->id); | |
1304 | return -EINVAL; | |
1305 | } | |
c0efd232 | 1306 | |
6241d8ca | 1307 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1308 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1309 | if (!found) | |
1310 | printk(" (->"); | |
1311 | ||
1312 | printk(" XU %d", forward->id); | |
1313 | found = 1; | |
1314 | } | |
1315 | break; | |
1316 | ||
1317 | case UVC_OTT_VENDOR_SPECIFIC: | |
1318 | case UVC_OTT_DISPLAY: | |
1319 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1320 | case UVC_TT_STREAMING: | |
1321 | if (UVC_ENTITY_IS_ITERM(forward)) { | |
1322 | uvc_trace(UVC_TRACE_DESCR, "Unsupported input " | |
1323 | "terminal %u.\n", forward->id); | |
1324 | return -EINVAL; | |
1325 | } | |
c0efd232 | 1326 | |
6241d8ca | 1327 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1328 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1329 | if (!found) | |
1330 | printk(" (->"); | |
1331 | ||
1332 | printk(" OT %d", forward->id); | |
1333 | found = 1; | |
1334 | } | |
1335 | break; | |
c0efd232 LP |
1336 | } |
1337 | } | |
1338 | if (found) | |
1339 | printk(")"); | |
1340 | ||
1341 | return 0; | |
1342 | } | |
1343 | ||
8e113595 | 1344 | static int uvc_scan_chain_backward(struct uvc_video_chain *chain, |
4057ac6c | 1345 | struct uvc_entity **_entity) |
c0efd232 | 1346 | { |
4057ac6c | 1347 | struct uvc_entity *entity = *_entity; |
c0efd232 | 1348 | struct uvc_entity *term; |
4057ac6c | 1349 | int id = -EINVAL, i; |
c0efd232 LP |
1350 | |
1351 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1352 | case UVC_VC_EXTENSION_UNIT: |
b482d923 | 1353 | case UVC_VC_PROCESSING_UNIT: |
8ca5a639 | 1354 | id = entity->baSourceID[0]; |
c0efd232 LP |
1355 | break; |
1356 | ||
b482d923 | 1357 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 | 1358 | /* Single-input selector units are ignored. */ |
8ca5a639 LP |
1359 | if (entity->bNrInPins == 1) { |
1360 | id = entity->baSourceID[0]; | |
c0efd232 LP |
1361 | break; |
1362 | } | |
1363 | ||
1364 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1365 | printk(" <- IT"); | |
1366 | ||
8e113595 | 1367 | chain->selector = entity; |
8ca5a639 LP |
1368 | for (i = 0; i < entity->bNrInPins; ++i) { |
1369 | id = entity->baSourceID[i]; | |
8e113595 | 1370 | term = uvc_entity_by_id(chain->dev, id); |
c0efd232 LP |
1371 | if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { |
1372 | uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " | |
1373 | "input %d isn't connected to an " | |
1374 | "input terminal\n", entity->id, i); | |
1375 | return -1; | |
1376 | } | |
1377 | ||
1378 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1379 | printk(" %d", term->id); | |
1380 | ||
6241d8ca | 1381 | list_add_tail(&term->chain, &chain->entities); |
8e113595 | 1382 | uvc_scan_chain_forward(chain, term, entity); |
c0efd232 LP |
1383 | } |
1384 | ||
1385 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1386 | printk("\n"); | |
1387 | ||
1388 | id = 0; | |
1389 | break; | |
4057ac6c LP |
1390 | |
1391 | case UVC_ITT_VENDOR_SPECIFIC: | |
1392 | case UVC_ITT_CAMERA: | |
1393 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
1394 | case UVC_OTT_VENDOR_SPECIFIC: | |
1395 | case UVC_OTT_DISPLAY: | |
1396 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1397 | case UVC_TT_STREAMING: | |
8ca5a639 | 1398 | id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; |
4057ac6c | 1399 | break; |
c0efd232 LP |
1400 | } |
1401 | ||
4057ac6c LP |
1402 | if (id <= 0) { |
1403 | *_entity = NULL; | |
1404 | return id; | |
1405 | } | |
1406 | ||
1407 | entity = uvc_entity_by_id(chain->dev, id); | |
1408 | if (entity == NULL) { | |
1409 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
1410 | "unknown entity %d.\n", id); | |
1411 | return -EINVAL; | |
1412 | } | |
1413 | ||
1414 | *_entity = entity; | |
1415 | return 0; | |
c0efd232 LP |
1416 | } |
1417 | ||
8e113595 | 1418 | static int uvc_scan_chain(struct uvc_video_chain *chain, |
4057ac6c | 1419 | struct uvc_entity *term) |
c0efd232 LP |
1420 | { |
1421 | struct uvc_entity *entity, *prev; | |
c0efd232 | 1422 | |
4057ac6c | 1423 | uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); |
ff924203 | 1424 | |
4057ac6c LP |
1425 | entity = term; |
1426 | prev = NULL; | |
8e113595 | 1427 | |
4057ac6c LP |
1428 | while (entity != NULL) { |
1429 | /* Entity must not be part of an existing chain */ | |
8e113595 LP |
1430 | if (entity->chain.next || entity->chain.prev) { |
1431 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
4057ac6c | 1432 | "entity %d already in chain.\n", entity->id); |
8e113595 | 1433 | return -EINVAL; |
c0efd232 LP |
1434 | } |
1435 | ||
1436 | /* Process entity */ | |
8e113595 LP |
1437 | if (uvc_scan_chain_entity(chain, entity) < 0) |
1438 | return -EINVAL; | |
c0efd232 LP |
1439 | |
1440 | /* Forward scan */ | |
8e113595 LP |
1441 | if (uvc_scan_chain_forward(chain, entity, prev) < 0) |
1442 | return -EINVAL; | |
c0efd232 | 1443 | |
c0efd232 | 1444 | /* Backward scan */ |
4057ac6c LP |
1445 | prev = entity; |
1446 | if (uvc_scan_chain_backward(chain, &entity) < 0) | |
1447 | return -EINVAL; | |
c0efd232 LP |
1448 | } |
1449 | ||
8e113595 LP |
1450 | return 0; |
1451 | } | |
1452 | ||
6241d8ca LP |
1453 | static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, |
1454 | char *buffer) | |
8e113595 LP |
1455 | { |
1456 | struct uvc_entity *term; | |
1457 | unsigned int nterms = 0; | |
1458 | char *p = buffer; | |
1459 | ||
1460 | list_for_each_entry(term, terms, chain) { | |
6241d8ca LP |
1461 | if (!UVC_ENTITY_IS_TERM(term) || |
1462 | UVC_TERM_DIRECTION(term) != dir) | |
1463 | continue; | |
1464 | ||
1465 | if (nterms) | |
8e113595 | 1466 | p += sprintf(p, ","); |
6241d8ca LP |
1467 | if (++nterms >= 4) { |
1468 | p += sprintf(p, "..."); | |
1469 | break; | |
8e113595 | 1470 | } |
6241d8ca | 1471 | p += sprintf(p, "%u", term->id); |
ff924203 | 1472 | } |
c0efd232 | 1473 | |
8e113595 LP |
1474 | return p - buffer; |
1475 | } | |
1476 | ||
1477 | static const char *uvc_print_chain(struct uvc_video_chain *chain) | |
1478 | { | |
1479 | static char buffer[43]; | |
1480 | char *p = buffer; | |
1481 | ||
6241d8ca | 1482 | p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); |
8e113595 | 1483 | p += sprintf(p, " -> "); |
6241d8ca | 1484 | uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); |
8e113595 LP |
1485 | |
1486 | return buffer; | |
c0efd232 LP |
1487 | } |
1488 | ||
1489 | /* | |
35f02a68 | 1490 | * Scan the device for video chains and register video devices. |
c0efd232 | 1491 | * |
8e113595 | 1492 | * Chains are scanned starting at their output terminals and walked backwards. |
c0efd232 | 1493 | */ |
35f02a68 | 1494 | static int uvc_scan_device(struct uvc_device *dev) |
c0efd232 | 1495 | { |
8e113595 | 1496 | struct uvc_video_chain *chain; |
c0efd232 | 1497 | struct uvc_entity *term; |
c0efd232 | 1498 | |
c0efd232 | 1499 | list_for_each_entry(term, &dev->entities, list) { |
8e113595 | 1500 | if (!UVC_ENTITY_IS_OTERM(term)) |
c0efd232 LP |
1501 | continue; |
1502 | ||
8e113595 LP |
1503 | /* If the terminal is already included in a chain, skip it. |
1504 | * This can happen for chains that have multiple output | |
1505 | * terminals, where all output terminals beside the first one | |
1506 | * will be inserted in the chain in forward scans. | |
1507 | */ | |
1508 | if (term->chain.next || term->chain.prev) | |
c0efd232 LP |
1509 | continue; |
1510 | ||
8e113595 LP |
1511 | chain = kzalloc(sizeof(*chain), GFP_KERNEL); |
1512 | if (chain == NULL) | |
1513 | return -ENOMEM; | |
1514 | ||
6241d8ca | 1515 | INIT_LIST_HEAD(&chain->entities); |
8e113595 LP |
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; | |
8e113595 | 1660 | vdev->fops = &uvc_fops; |
716fdee1 | 1661 | vdev->release = uvc_release; |
8e113595 LP |
1662 | strlcpy(vdev->name, dev->name, sizeof vdev->name); |
1663 | ||
1664 | /* Set the driver data before calling video_register_device, otherwise | |
1665 | * uvc_v4l2_open might race us. | |
1666 | */ | |
1667 | stream->vdev = vdev; | |
1668 | video_set_drvdata(vdev, stream); | |
1669 | ||
1670 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1671 | if (ret < 0) { | |
1672 | uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", | |
1673 | ret); | |
1674 | stream->vdev = NULL; | |
1675 | video_device_release(vdev); | |
1676 | return ret; | |
1677 | } | |
1678 | ||
716fdee1 | 1679 | atomic_inc(&dev->nstreams); |
8e113595 LP |
1680 | return 0; |
1681 | } | |
1682 | ||
1683 | /* | |
1684 | * Register all video devices in all chains. | |
1685 | */ | |
1686 | static int uvc_register_terms(struct uvc_device *dev, | |
6241d8ca | 1687 | struct uvc_video_chain *chain) |
8e113595 LP |
1688 | { |
1689 | struct uvc_streaming *stream; | |
1690 | struct uvc_entity *term; | |
1691 | int ret; | |
1692 | ||
6241d8ca | 1693 | list_for_each_entry(term, &chain->entities, chain) { |
8e113595 LP |
1694 | if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) |
1695 | continue; | |
1696 | ||
1697 | stream = uvc_stream_by_id(dev, term->id); | |
1698 | if (stream == NULL) { | |
1699 | uvc_printk(KERN_INFO, "No streaming interface found " | |
1700 | "for terminal %u.", term->id); | |
1701 | continue; | |
1702 | } | |
1703 | ||
1704 | stream->chain = chain; | |
1705 | ret = uvc_register_video(dev, stream); | |
1706 | if (ret < 0) | |
1707 | return ret; | |
1708 | } | |
1709 | ||
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | static int uvc_register_chains(struct uvc_device *dev) | |
1714 | { | |
1715 | struct uvc_video_chain *chain; | |
1716 | int ret; | |
1717 | ||
1718 | list_for_each_entry(chain, &dev->chains, list) { | |
6241d8ca | 1719 | ret = uvc_register_terms(dev, chain); |
8e113595 LP |
1720 | if (ret < 0) |
1721 | return ret; | |
1722 | } | |
1723 | ||
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | /* ------------------------------------------------------------------------ | |
1728 | * USB probe, disconnect, suspend and resume | |
1729 | */ | |
1730 | ||
c0efd232 LP |
1731 | static int uvc_probe(struct usb_interface *intf, |
1732 | const struct usb_device_id *id) | |
1733 | { | |
1734 | struct usb_device *udev = interface_to_usbdev(intf); | |
1735 | struct uvc_device *dev; | |
1736 | int ret; | |
1737 | ||
1738 | if (id->idVendor && id->idProduct) | |
1739 | uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " | |
1740 | "(%04x:%04x)\n", udev->devpath, id->idVendor, | |
1741 | id->idProduct); | |
1742 | else | |
1743 | uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", | |
1744 | udev->devpath); | |
1745 | ||
2c2d264b | 1746 | /* Allocate memory for the device and initialize it. */ |
c0efd232 LP |
1747 | if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) |
1748 | return -ENOMEM; | |
1749 | ||
1750 | INIT_LIST_HEAD(&dev->entities); | |
8e113595 | 1751 | INIT_LIST_HEAD(&dev->chains); |
35f02a68 | 1752 | INIT_LIST_HEAD(&dev->streams); |
716fdee1 | 1753 | atomic_set(&dev->nstreams, 0); |
04a37e0f | 1754 | atomic_set(&dev->users, 0); |
c0efd232 LP |
1755 | |
1756 | dev->udev = usb_get_dev(udev); | |
1757 | dev->intf = usb_get_intf(intf); | |
1758 | dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
73de3592 LP |
1759 | dev->quirks = (uvc_quirks_param == -1) |
1760 | ? id->driver_info : uvc_quirks_param; | |
c0efd232 LP |
1761 | |
1762 | if (udev->product != NULL) | |
d0ebf307 | 1763 | strlcpy(dev->name, udev->product, sizeof dev->name); |
c0efd232 LP |
1764 | else |
1765 | snprintf(dev->name, sizeof dev->name, | |
1766 | "UVC Camera (%04x:%04x)", | |
1767 | le16_to_cpu(udev->descriptor.idVendor), | |
1768 | le16_to_cpu(udev->descriptor.idProduct)); | |
1769 | ||
2c2d264b | 1770 | /* Parse the Video Class control descriptor. */ |
c0efd232 LP |
1771 | if (uvc_parse_control(dev) < 0) { |
1772 | uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " | |
1773 | "descriptors.\n"); | |
1774 | goto error; | |
1775 | } | |
1776 | ||
fba4578e | 1777 | uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", |
c0efd232 LP |
1778 | dev->uvc_version >> 8, dev->uvc_version & 0xff, |
1779 | udev->product ? udev->product : "<unnamed>", | |
1780 | le16_to_cpu(udev->descriptor.idVendor), | |
1781 | le16_to_cpu(udev->descriptor.idProduct)); | |
1782 | ||
73de3592 LP |
1783 | if (dev->quirks != id->driver_info) { |
1784 | uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " | |
1785 | "parameter for testing purpose.\n", dev->quirks); | |
c0efd232 LP |
1786 | uvc_printk(KERN_INFO, "Please report required quirks to the " |
1787 | "linux-uvc-devel mailing list.\n"); | |
1788 | } | |
1789 | ||
2c2d264b | 1790 | /* Initialize controls. */ |
c0efd232 LP |
1791 | if (uvc_ctrl_init_device(dev) < 0) |
1792 | goto error; | |
1793 | ||
8e113595 | 1794 | /* Scan the device for video chains. */ |
35f02a68 | 1795 | if (uvc_scan_device(dev) < 0) |
c0efd232 LP |
1796 | goto error; |
1797 | ||
8e113595 LP |
1798 | /* Register video devices. */ |
1799 | if (uvc_register_chains(dev) < 0) | |
1800 | goto error; | |
1801 | ||
2c2d264b | 1802 | /* Save our data pointer in the interface data. */ |
c0efd232 LP |
1803 | usb_set_intfdata(intf, dev); |
1804 | ||
2c2d264b | 1805 | /* Initialize the interrupt URB. */ |
c0efd232 LP |
1806 | if ((ret = uvc_status_init(dev)) < 0) { |
1807 | uvc_printk(KERN_INFO, "Unable to initialize the status " | |
1808 | "endpoint (%d), status interrupt will not be " | |
1809 | "supported.\n", ret); | |
1810 | } | |
1811 | ||
1812 | uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); | |
1813 | return 0; | |
1814 | ||
1815 | error: | |
716fdee1 | 1816 | uvc_unregister_video(dev); |
c0efd232 LP |
1817 | return -ENODEV; |
1818 | } | |
1819 | ||
1820 | static void uvc_disconnect(struct usb_interface *intf) | |
1821 | { | |
1822 | struct uvc_device *dev = usb_get_intfdata(intf); | |
1823 | ||
1824 | /* Set the USB interface data to NULL. This can be done outside the | |
1825 | * lock, as there's no other reader. | |
1826 | */ | |
1827 | usb_set_intfdata(intf, NULL); | |
1828 | ||
b482d923 LP |
1829 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1830 | UVC_SC_VIDEOSTREAMING) | |
c0efd232 LP |
1831 | return; |
1832 | ||
c0efd232 | 1833 | dev->state |= UVC_DEV_DISCONNECTED; |
a9e28585 | 1834 | |
716fdee1 | 1835 | uvc_unregister_video(dev); |
c0efd232 LP |
1836 | } |
1837 | ||
1838 | static int uvc_suspend(struct usb_interface *intf, pm_message_t message) | |
1839 | { | |
1840 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1841 | struct uvc_streaming *stream; |
c0efd232 LP |
1842 | |
1843 | uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", | |
1844 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1845 | ||
1846 | /* Controls are cached on the fly so they don't need to be saved. */ | |
b482d923 LP |
1847 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1848 | UVC_SC_VIDEOCONTROL) | |
c0efd232 LP |
1849 | return uvc_status_suspend(dev); |
1850 | ||
35f02a68 LP |
1851 | list_for_each_entry(stream, &dev->streams, list) { |
1852 | if (stream->intf == intf) | |
1853 | return uvc_video_suspend(stream); | |
c0efd232 LP |
1854 | } |
1855 | ||
35f02a68 LP |
1856 | uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " |
1857 | "mismatch.\n"); | |
1858 | return -EINVAL; | |
c0efd232 LP |
1859 | } |
1860 | ||
9b0ae867 | 1861 | static int __uvc_resume(struct usb_interface *intf, int reset) |
c0efd232 LP |
1862 | { |
1863 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1864 | struct uvc_streaming *stream; |
c0efd232 LP |
1865 | |
1866 | uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", | |
1867 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1868 | ||
b482d923 LP |
1869 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1870 | UVC_SC_VIDEOCONTROL) { | |
7564f67d HV |
1871 | if (reset) { |
1872 | int ret = uvc_ctrl_resume_device(dev); | |
1873 | ||
1874 | if (ret < 0) | |
1875 | return ret; | |
1876 | } | |
c0efd232 LP |
1877 | |
1878 | return uvc_status_resume(dev); | |
1879 | } | |
1880 | ||
35f02a68 LP |
1881 | list_for_each_entry(stream, &dev->streams, list) { |
1882 | if (stream->intf == intf) | |
1883 | return uvc_video_resume(stream); | |
c0efd232 LP |
1884 | } |
1885 | ||
35f02a68 LP |
1886 | uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " |
1887 | "mismatch.\n"); | |
1888 | return -EINVAL; | |
c0efd232 LP |
1889 | } |
1890 | ||
9b0ae867 LP |
1891 | static int uvc_resume(struct usb_interface *intf) |
1892 | { | |
1893 | return __uvc_resume(intf, 0); | |
1894 | } | |
1895 | ||
1896 | static int uvc_reset_resume(struct usb_interface *intf) | |
1897 | { | |
1898 | return __uvc_resume(intf, 1); | |
1899 | } | |
1900 | ||
310fe524 LP |
1901 | /* ------------------------------------------------------------------------ |
1902 | * Module parameters | |
1903 | */ | |
1904 | ||
1905 | static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) | |
1906 | { | |
1907 | if (uvc_clock_param == CLOCK_MONOTONIC) | |
1908 | return sprintf(buffer, "CLOCK_MONOTONIC"); | |
1909 | else | |
1910 | return sprintf(buffer, "CLOCK_REALTIME"); | |
1911 | } | |
1912 | ||
1913 | static int uvc_clock_param_set(const char *val, struct kernel_param *kp) | |
1914 | { | |
1915 | if (strncasecmp(val, "clock_", strlen("clock_")) == 0) | |
1916 | val += strlen("clock_"); | |
1917 | ||
1918 | if (strcasecmp(val, "monotonic") == 0) | |
1919 | uvc_clock_param = CLOCK_MONOTONIC; | |
1920 | else if (strcasecmp(val, "realtime") == 0) | |
1921 | uvc_clock_param = CLOCK_REALTIME; | |
1922 | else | |
1923 | return -EINVAL; | |
1924 | ||
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, | |
1929 | &uvc_clock_param, S_IRUGO|S_IWUSR); | |
1930 | MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); | |
1931 | module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); | |
1932 | MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); | |
1933 | module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); | |
1934 | MODULE_PARM_DESC(quirks, "Forced device quirks"); | |
1935 | module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); | |
1936 | MODULE_PARM_DESC(trace, "Trace level bitmask"); | |
1937 | module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); | |
1938 | MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); | |
1939 | ||
c0efd232 LP |
1940 | /* ------------------------------------------------------------------------ |
1941 | * Driver initialization and cleanup | |
1942 | */ | |
1943 | ||
1944 | /* | |
1945 | * The Logitech cameras listed below have their interface class set to | |
1946 | * VENDOR_SPEC because they don't announce themselves as UVC devices, even | |
1947 | * though they are compliant. | |
1948 | */ | |
1949 | static struct usb_device_id uvc_ids[] = { | |
bce039c0 LP |
1950 | /* Genius eFace 2025 */ |
1951 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1952 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1953 | .idVendor = 0x0458, | |
1954 | .idProduct = 0x706e, | |
1955 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1956 | .bInterfaceSubClass = 1, | |
1957 | .bInterfaceProtocol = 0, | |
1958 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
1959 | /* Microsoft Lifecam NX-6000 */ |
1960 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1961 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1962 | .idVendor = 0x045e, | |
1963 | .idProduct = 0x00f8, | |
1964 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1965 | .bInterfaceSubClass = 1, | |
1966 | .bInterfaceProtocol = 0, | |
1967 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1968 | /* Microsoft Lifecam VX-7000 */ | |
1969 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1970 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1971 | .idVendor = 0x045e, | |
1972 | .idProduct = 0x0723, | |
1973 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1974 | .bInterfaceSubClass = 1, | |
1975 | .bInterfaceProtocol = 0, | |
1976 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1977 | /* Logitech Quickcam Fusion */ | |
1978 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1979 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1980 | .idVendor = 0x046d, | |
1981 | .idProduct = 0x08c1, | |
1982 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1983 | .bInterfaceSubClass = 1, | |
1984 | .bInterfaceProtocol = 0 }, | |
1985 | /* Logitech Quickcam Orbit MP */ | |
1986 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1987 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1988 | .idVendor = 0x046d, | |
1989 | .idProduct = 0x08c2, | |
1990 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1991 | .bInterfaceSubClass = 1, | |
1992 | .bInterfaceProtocol = 0 }, | |
1993 | /* Logitech Quickcam Pro for Notebook */ | |
1994 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1995 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1996 | .idVendor = 0x046d, | |
1997 | .idProduct = 0x08c3, | |
1998 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1999 | .bInterfaceSubClass = 1, | |
2000 | .bInterfaceProtocol = 0 }, | |
2001 | /* Logitech Quickcam Pro 5000 */ | |
2002 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2003 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2004 | .idVendor = 0x046d, | |
2005 | .idProduct = 0x08c5, | |
2006 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2007 | .bInterfaceSubClass = 1, | |
2008 | .bInterfaceProtocol = 0 }, | |
2009 | /* Logitech Quickcam OEM Dell Notebook */ | |
2010 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2011 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2012 | .idVendor = 0x046d, | |
2013 | .idProduct = 0x08c6, | |
2014 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2015 | .bInterfaceSubClass = 1, | |
2016 | .bInterfaceProtocol = 0 }, | |
2017 | /* Logitech Quickcam OEM Cisco VT Camera II */ | |
2018 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2019 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2020 | .idVendor = 0x046d, | |
2021 | .idProduct = 0x08c7, | |
2022 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2023 | .bInterfaceSubClass = 1, | |
2024 | .bInterfaceProtocol = 0 }, | |
f61d1d8a LP |
2025 | /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ |
2026 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2027 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2028 | .idVendor = 0x058f, | |
2029 | .idProduct = 0x3820, | |
2030 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2031 | .bInterfaceSubClass = 1, | |
2032 | .bInterfaceProtocol = 0, | |
2033 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 | 2034 | /* Apple Built-In iSight */ |
2c2d264b | 2035 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 LP |
2036 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2037 | .idVendor = 0x05ac, | |
2038 | .idProduct = 0x8501, | |
2c2d264b LP |
2039 | .bInterfaceClass = USB_CLASS_VIDEO, |
2040 | .bInterfaceSubClass = 1, | |
2041 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2042 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2043 | | UVC_QUIRK_BUILTIN_ISIGHT }, | |
2044 | /* Genesys Logic USB 2.0 PC Camera */ | |
2c2d264b | 2045 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 | 2046 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2c2d264b LP |
2047 | .idVendor = 0x05e3, |
2048 | .idProduct = 0x0505, | |
2049 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2050 | .bInterfaceSubClass = 1, | |
2051 | .bInterfaceProtocol = 0, | |
2052 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
d79cd839 LP |
2053 | /* ViMicro Vega */ |
2054 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2055 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2056 | .idVendor = 0x0ac8, | |
2057 | .idProduct = 0x332d, | |
2058 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2059 | .bInterfaceSubClass = 1, | |
2060 | .bInterfaceProtocol = 0, | |
2061 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2062 | /* ViMicro - Minoru3D */ | |
2063 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2064 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2065 | .idVendor = 0x0ac8, | |
2066 | .idProduct = 0x3410, | |
2067 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2068 | .bInterfaceSubClass = 1, | |
2069 | .bInterfaceProtocol = 0, | |
2070 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2071 | /* ViMicro Venus - Minoru3D */ | |
2072 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
50144aee LP |
2073 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2074 | .idVendor = 0x0ac8, | |
d79cd839 | 2075 | .idProduct = 0x3420, |
50144aee LP |
2076 | .bInterfaceClass = USB_CLASS_VIDEO, |
2077 | .bInterfaceSubClass = 1, | |
2078 | .bInterfaceProtocol = 0, | |
2079 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
c0efd232 LP |
2080 | /* MT6227 */ |
2081 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2082 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2083 | .idVendor = 0x0e8d, | |
2084 | .idProduct = 0x0004, | |
2085 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2086 | .bInterfaceSubClass = 1, | |
2087 | .bInterfaceProtocol = 0, | |
bab6f66c LP |
2088 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2089 | | UVC_QUIRK_PROBE_DEF }, | |
c0efd232 LP |
2090 | /* Syntek (HP Spartan) */ |
2091 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2092 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2093 | .idVendor = 0x174f, | |
2094 | .idProduct = 0x5212, | |
2095 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2096 | .bInterfaceSubClass = 1, | |
2097 | .bInterfaceProtocol = 0, | |
25e69850 | 2098 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
562f0fed LP |
2099 | /* Syntek (Samsung Q310) */ |
2100 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2101 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2102 | .idVendor = 0x174f, | |
2103 | .idProduct = 0x5931, | |
2104 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2105 | .bInterfaceSubClass = 1, | |
2106 | .bInterfaceProtocol = 0, | |
2107 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f61d1d8a | 2108 | /* Syntek (Asus F9SG) */ |
25e69850 LP |
2109 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2110 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2111 | .idVendor = 0x174f, | |
2112 | .idProduct = 0x8a31, | |
2113 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2114 | .bInterfaceSubClass = 1, | |
2115 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2116 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
2117 | /* Syntek (Asus U3S) */ | |
2118 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2119 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2120 | .idVendor = 0x174f, | |
2121 | .idProduct = 0x8a33, | |
2122 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2123 | .bInterfaceSubClass = 1, | |
2124 | .bInterfaceProtocol = 0, | |
2125 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
0ce566da LP |
2126 | /* Syntek (JAOtech Smart Terminal) */ |
2127 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2128 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2129 | .idVendor = 0x174f, | |
2130 | .idProduct = 0x8a34, | |
2131 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2132 | .bInterfaceSubClass = 1, | |
2133 | .bInterfaceProtocol = 0, | |
2134 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
849a3aba | 2135 | /* Lenovo Thinkpad SL400/SL500 */ |
2f38483b LP |
2136 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2137 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2138 | .idVendor = 0x17ef, | |
2139 | .idProduct = 0x480b, | |
2140 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2141 | .bInterfaceSubClass = 1, | |
2142 | .bInterfaceProtocol = 0, | |
2143 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
2d2bf2a3 LP |
2144 | /* Aveo Technology USB 2.0 Camera */ |
2145 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2146 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2147 | .idVendor = 0x1871, | |
2148 | .idProduct = 0x0306, | |
2149 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2150 | .bInterfaceSubClass = 1, | |
2151 | .bInterfaceProtocol = 0, | |
5bdf1377 LP |
2152 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2153 | | UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
c0efd232 LP |
2154 | /* Ecamm Pico iMage */ |
2155 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2156 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2157 | .idVendor = 0x18cd, | |
2158 | .idProduct = 0xcafe, | |
2159 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2160 | .bInterfaceSubClass = 1, | |
2161 | .bInterfaceProtocol = 0, | |
2162 | .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
ca4a3456 LP |
2163 | /* FSC WebCam V30S */ |
2164 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2165 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2166 | .idVendor = 0x18ec, | |
2167 | .idProduct = 0x3288, | |
2168 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2169 | .bInterfaceSubClass = 1, | |
2170 | .bInterfaceProtocol = 0, | |
2171 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2172 | /* Bodelin ProScopeHR */ |
2173 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2174 | | USB_DEVICE_ID_MATCH_DEV_HI | |
2175 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2176 | .idVendor = 0x19ab, | |
2177 | .idProduct = 0x1000, | |
2178 | .bcdDevice_hi = 0x0126, | |
2179 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2180 | .bInterfaceSubClass = 1, | |
2181 | .bInterfaceProtocol = 0, | |
2182 | .driver_info = UVC_QUIRK_STATUS_INTERVAL }, | |
3bc766ad LP |
2183 | /* MSI StarCam 370i */ |
2184 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2185 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2186 | .idVendor = 0x1b3b, | |
2187 | .idProduct = 0x2951, | |
2188 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2189 | .bInterfaceSubClass = 1, | |
2190 | .bInterfaceProtocol = 0, | |
2191 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2192 | /* SiGma Micro USB Web Camera */ |
2193 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2194 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2195 | .idVendor = 0x1c4f, | |
2196 | .idProduct = 0x3000, | |
2197 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2198 | .bInterfaceSubClass = 1, | |
2199 | .bInterfaceProtocol = 0, | |
2200 | .driver_info = UVC_QUIRK_PROBE_MINMAX | |
d732c44c | 2201 | | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, |
c0efd232 LP |
2202 | /* Generic USB Video Class */ |
2203 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, | |
2204 | {} | |
2205 | }; | |
2206 | ||
2207 | MODULE_DEVICE_TABLE(usb, uvc_ids); | |
2208 | ||
2209 | struct uvc_driver uvc_driver = { | |
2210 | .driver = { | |
2211 | .name = "uvcvideo", | |
2212 | .probe = uvc_probe, | |
2213 | .disconnect = uvc_disconnect, | |
2214 | .suspend = uvc_suspend, | |
2215 | .resume = uvc_resume, | |
9b0ae867 | 2216 | .reset_resume = uvc_reset_resume, |
c0efd232 LP |
2217 | .id_table = uvc_ids, |
2218 | .supports_autosuspend = 1, | |
2219 | }, | |
2220 | }; | |
2221 | ||
2222 | static int __init uvc_init(void) | |
2223 | { | |
2224 | int result; | |
2225 | ||
2226 | INIT_LIST_HEAD(&uvc_driver.devices); | |
2227 | INIT_LIST_HEAD(&uvc_driver.controls); | |
c0efd232 LP |
2228 | mutex_init(&uvc_driver.ctrl_mutex); |
2229 | ||
2230 | uvc_ctrl_init(); | |
2231 | ||
2232 | result = usb_register(&uvc_driver.driver); | |
2233 | if (result == 0) | |
2234 | printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); | |
2235 | return result; | |
2236 | } | |
2237 | ||
2238 | static void __exit uvc_cleanup(void) | |
2239 | { | |
2240 | usb_deregister(&uvc_driver.driver); | |
2241 | } | |
2242 | ||
2243 | module_init(uvc_init); | |
2244 | module_exit(uvc_cleanup); | |
2245 | ||
c0efd232 LP |
2246 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2247 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2248 | MODULE_LICENSE("GPL"); | |
2249 | MODULE_VERSION(DRIVER_VERSION); | |
f87086e3 | 2250 |