Commit | Line | Data |
---|---|---|
c0efd232 LP |
1 | /* |
2 | * uvc_driver.c -- USB Video Class driver | |
3 | * | |
11fc5baf LP |
4 | * Copyright (C) 2005-2010 |
5 | * Laurent Pinchart (laurent.pinchart@ideasonboard.com) | |
c0efd232 LP |
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 | ||
11fc5baf LP |
41 | #define DRIVER_AUTHOR "Laurent Pinchart " \ |
42 | "<laurent.pinchart@ideasonboard.com>" | |
c0efd232 | 43 | #define DRIVER_DESC "USB Video Class driver" |
c0efd232 | 44 | |
310fe524 | 45 | unsigned int uvc_clock_param = CLOCK_MONOTONIC; |
0fbd8ee6 | 46 | unsigned int uvc_no_drop_param; |
73de3592 | 47 | static unsigned int uvc_quirks_param = -1; |
c0efd232 | 48 | unsigned int uvc_trace_param; |
b232a012 | 49 | unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; |
c0efd232 LP |
50 | |
51 | /* ------------------------------------------------------------------------ | |
2c2d264b | 52 | * Video formats |
c0efd232 LP |
53 | */ |
54 | ||
55 | static struct uvc_format_desc uvc_fmts[] = { | |
56 | { | |
57 | .name = "YUV 4:2:2 (YUYV)", | |
58 | .guid = UVC_GUID_FORMAT_YUY2, | |
59 | .fcc = V4L2_PIX_FMT_YUYV, | |
60 | }, | |
68f194e0 DR |
61 | { |
62 | .name = "YUV 4:2:2 (YUYV)", | |
63 | .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, | |
64 | .fcc = V4L2_PIX_FMT_YUYV, | |
65 | }, | |
c0efd232 LP |
66 | { |
67 | .name = "YUV 4:2:0 (NV12)", | |
68 | .guid = UVC_GUID_FORMAT_NV12, | |
69 | .fcc = V4L2_PIX_FMT_NV12, | |
70 | }, | |
71 | { | |
72 | .name = "MJPEG", | |
73 | .guid = UVC_GUID_FORMAT_MJPEG, | |
74 | .fcc = V4L2_PIX_FMT_MJPEG, | |
75 | }, | |
76 | { | |
77 | .name = "YVU 4:2:0 (YV12)", | |
78 | .guid = UVC_GUID_FORMAT_YV12, | |
79 | .fcc = V4L2_PIX_FMT_YVU420, | |
80 | }, | |
81 | { | |
82 | .name = "YUV 4:2:0 (I420)", | |
83 | .guid = UVC_GUID_FORMAT_I420, | |
84 | .fcc = V4L2_PIX_FMT_YUV420, | |
85 | }, | |
86 | { | |
87 | .name = "YUV 4:2:2 (UYVY)", | |
88 | .guid = UVC_GUID_FORMAT_UYVY, | |
89 | .fcc = V4L2_PIX_FMT_UYVY, | |
90 | }, | |
91 | { | |
61421206 | 92 | .name = "Greyscale (8-bit)", |
c0efd232 LP |
93 | .guid = UVC_GUID_FORMAT_Y800, |
94 | .fcc = V4L2_PIX_FMT_GREY, | |
95 | }, | |
61421206 LP |
96 | { |
97 | .name = "Greyscale (16-bit)", | |
98 | .guid = UVC_GUID_FORMAT_Y16, | |
99 | .fcc = V4L2_PIX_FMT_Y16, | |
100 | }, | |
c0efd232 LP |
101 | { |
102 | .name = "RGB Bayer", | |
103 | .guid = UVC_GUID_FORMAT_BY8, | |
104 | .fcc = V4L2_PIX_FMT_SBGGR8, | |
105 | }, | |
106 | }; | |
107 | ||
108 | /* ------------------------------------------------------------------------ | |
109 | * Utility functions | |
110 | */ | |
111 | ||
112 | struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, | |
113 | __u8 epaddr) | |
114 | { | |
115 | struct usb_host_endpoint *ep; | |
116 | unsigned int i; | |
117 | ||
118 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
119 | ep = &alts->endpoint[i]; | |
120 | if (ep->desc.bEndpointAddress == epaddr) | |
121 | return ep; | |
122 | } | |
123 | ||
124 | return NULL; | |
125 | } | |
126 | ||
127 | static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) | |
128 | { | |
129 | unsigned int len = ARRAY_SIZE(uvc_fmts); | |
130 | unsigned int i; | |
131 | ||
132 | for (i = 0; i < len; ++i) { | |
133 | if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) | |
134 | return &uvc_fmts[i]; | |
135 | } | |
136 | ||
137 | return NULL; | |
138 | } | |
139 | ||
140 | static __u32 uvc_colorspace(const __u8 primaries) | |
141 | { | |
142 | static const __u8 colorprimaries[] = { | |
143 | 0, | |
144 | V4L2_COLORSPACE_SRGB, | |
145 | V4L2_COLORSPACE_470_SYSTEM_M, | |
146 | V4L2_COLORSPACE_470_SYSTEM_BG, | |
147 | V4L2_COLORSPACE_SMPTE170M, | |
148 | V4L2_COLORSPACE_SMPTE240M, | |
149 | }; | |
150 | ||
151 | if (primaries < ARRAY_SIZE(colorprimaries)) | |
152 | return colorprimaries[primaries]; | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | /* Simplify a fraction using a simple continued fraction decomposition. The | |
158 | * idea here is to convert fractions such as 333333/10000000 to 1/30 using | |
159 | * 32 bit arithmetic only. The algorithm is not perfect and relies upon two | |
160 | * arbitrary parameters to remove non-significative terms from the simple | |
161 | * continued fraction decomposition. Using 8 and 333 for n_terms and threshold | |
162 | * respectively seems to give nice results. | |
163 | */ | |
164 | void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, | |
165 | unsigned int n_terms, unsigned int threshold) | |
166 | { | |
167 | uint32_t *an; | |
168 | uint32_t x, y, r; | |
169 | unsigned int i, n; | |
170 | ||
171 | an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); | |
172 | if (an == NULL) | |
173 | return; | |
174 | ||
175 | /* Convert the fraction to a simple continued fraction. See | |
176 | * http://mathforum.org/dr.math/faq/faq.fractions.html | |
177 | * Stop if the current term is bigger than or equal to the given | |
178 | * threshold. | |
179 | */ | |
180 | x = *numerator; | |
181 | y = *denominator; | |
182 | ||
183 | for (n = 0; n < n_terms && y != 0; ++n) { | |
184 | an[n] = x / y; | |
185 | if (an[n] >= threshold) { | |
186 | if (n < 2) | |
187 | n++; | |
188 | break; | |
189 | } | |
190 | ||
191 | r = x - an[n] * y; | |
192 | x = y; | |
193 | y = r; | |
194 | } | |
195 | ||
196 | /* Expand the simple continued fraction back to an integer fraction. */ | |
197 | x = 0; | |
198 | y = 1; | |
199 | ||
200 | for (i = n; i > 0; --i) { | |
201 | r = y; | |
202 | y = an[i-1] * y + x; | |
203 | x = r; | |
204 | } | |
205 | ||
206 | *numerator = y; | |
207 | *denominator = x; | |
208 | kfree(an); | |
209 | } | |
210 | ||
211 | /* Convert a fraction to a frame interval in 100ns multiples. The idea here is | |
212 | * to compute numerator / denominator * 10000000 using 32 bit fixed point | |
213 | * arithmetic only. | |
214 | */ | |
215 | uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) | |
216 | { | |
217 | uint32_t multiplier; | |
218 | ||
219 | /* Saturate the result if the operation would overflow. */ | |
220 | if (denominator == 0 || | |
221 | numerator/denominator >= ((uint32_t)-1)/10000000) | |
222 | return (uint32_t)-1; | |
223 | ||
224 | /* Divide both the denominator and the multiplier by two until | |
225 | * numerator * multiplier doesn't overflow. If anyone knows a better | |
226 | * algorithm please let me know. | |
227 | */ | |
228 | multiplier = 10000000; | |
229 | while (numerator > ((uint32_t)-1)/multiplier) { | |
230 | multiplier /= 2; | |
231 | denominator /= 2; | |
232 | } | |
233 | ||
234 | return denominator ? numerator * multiplier / denominator : 0; | |
235 | } | |
236 | ||
237 | /* ------------------------------------------------------------------------ | |
238 | * Terminal and unit management | |
239 | */ | |
240 | ||
241 | static struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) | |
242 | { | |
243 | struct uvc_entity *entity; | |
244 | ||
245 | list_for_each_entry(entity, &dev->entities, list) { | |
246 | if (entity->id == id) | |
247 | return entity; | |
248 | } | |
249 | ||
250 | return NULL; | |
251 | } | |
252 | ||
253 | static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, | |
254 | int id, struct uvc_entity *entity) | |
255 | { | |
256 | unsigned int i; | |
257 | ||
258 | if (entity == NULL) | |
259 | entity = list_entry(&dev->entities, struct uvc_entity, list); | |
260 | ||
261 | list_for_each_entry_continue(entity, &dev->entities, list) { | |
8ca5a639 LP |
262 | for (i = 0; i < entity->bNrInPins; ++i) |
263 | if (entity->baSourceID[i] == id) | |
c0efd232 | 264 | return entity; |
c0efd232 LP |
265 | } |
266 | ||
267 | return NULL; | |
268 | } | |
269 | ||
8e113595 LP |
270 | static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) |
271 | { | |
272 | struct uvc_streaming *stream; | |
273 | ||
274 | list_for_each_entry(stream, &dev->streams, list) { | |
275 | if (stream->header.bTerminalLink == id) | |
276 | return stream; | |
277 | } | |
278 | ||
279 | return NULL; | |
280 | } | |
281 | ||
c0efd232 | 282 | /* ------------------------------------------------------------------------ |
8e113595 | 283 | * Descriptors parsing |
c0efd232 LP |
284 | */ |
285 | ||
286 | static int uvc_parse_format(struct uvc_device *dev, | |
287 | struct uvc_streaming *streaming, struct uvc_format *format, | |
288 | __u32 **intervals, unsigned char *buffer, int buflen) | |
289 | { | |
290 | struct usb_interface *intf = streaming->intf; | |
291 | struct usb_host_interface *alts = intf->cur_altsetting; | |
292 | struct uvc_format_desc *fmtdesc; | |
293 | struct uvc_frame *frame; | |
294 | const unsigned char *start = buffer; | |
295 | unsigned int interval; | |
296 | unsigned int i, n; | |
297 | __u8 ftype; | |
298 | ||
299 | format->type = buffer[2]; | |
300 | format->index = buffer[3]; | |
301 | ||
302 | switch (buffer[2]) { | |
b482d923 LP |
303 | case UVC_VS_FORMAT_UNCOMPRESSED: |
304 | case UVC_VS_FORMAT_FRAME_BASED: | |
305 | n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; | |
233548a2 | 306 | if (buflen < n) { |
b2d9cc42 | 307 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
308 | "interface %d FORMAT error\n", |
309 | dev->udev->devnum, | |
310 | alts->desc.bInterfaceNumber); | |
311 | return -EINVAL; | |
312 | } | |
313 | ||
314 | /* Find the format descriptor from its GUID. */ | |
315 | fmtdesc = uvc_format_by_guid(&buffer[5]); | |
316 | ||
317 | if (fmtdesc != NULL) { | |
d0ebf307 | 318 | strlcpy(format->name, fmtdesc->name, |
c0efd232 LP |
319 | sizeof format->name); |
320 | format->fcc = fmtdesc->fcc; | |
321 | } else { | |
36bd883e LP |
322 | uvc_printk(KERN_INFO, "Unknown video format %pUl\n", |
323 | &buffer[5]); | |
324 | snprintf(format->name, sizeof(format->name), "%pUl\n", | |
325 | &buffer[5]); | |
c0efd232 LP |
326 | format->fcc = 0; |
327 | } | |
328 | ||
329 | format->bpp = buffer[21]; | |
b482d923 LP |
330 | if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { |
331 | ftype = UVC_VS_FRAME_UNCOMPRESSED; | |
c0efd232 | 332 | } else { |
b482d923 | 333 | ftype = UVC_VS_FRAME_FRAME_BASED; |
c0efd232 LP |
334 | if (buffer[27]) |
335 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
336 | } | |
337 | break; | |
338 | ||
b482d923 | 339 | case UVC_VS_FORMAT_MJPEG: |
c0efd232 | 340 | if (buflen < 11) { |
b2d9cc42 | 341 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
342 | "interface %d FORMAT error\n", |
343 | dev->udev->devnum, | |
344 | alts->desc.bInterfaceNumber); | |
345 | return -EINVAL; | |
346 | } | |
347 | ||
d0ebf307 | 348 | strlcpy(format->name, "MJPEG", sizeof format->name); |
c0efd232 LP |
349 | format->fcc = V4L2_PIX_FMT_MJPEG; |
350 | format->flags = UVC_FMT_FLAG_COMPRESSED; | |
351 | format->bpp = 0; | |
b482d923 | 352 | ftype = UVC_VS_FRAME_MJPEG; |
c0efd232 LP |
353 | break; |
354 | ||
b482d923 | 355 | case UVC_VS_FORMAT_DV: |
c0efd232 | 356 | if (buflen < 9) { |
b2d9cc42 | 357 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
358 | "interface %d FORMAT error\n", |
359 | dev->udev->devnum, | |
360 | alts->desc.bInterfaceNumber); | |
361 | return -EINVAL; | |
362 | } | |
363 | ||
364 | switch (buffer[8] & 0x7f) { | |
365 | case 0: | |
d0ebf307 | 366 | strlcpy(format->name, "SD-DV", sizeof format->name); |
c0efd232 LP |
367 | break; |
368 | case 1: | |
d0ebf307 | 369 | strlcpy(format->name, "SDL-DV", sizeof format->name); |
c0efd232 LP |
370 | break; |
371 | case 2: | |
d0ebf307 | 372 | strlcpy(format->name, "HD-DV", sizeof format->name); |
c0efd232 LP |
373 | break; |
374 | default: | |
b2d9cc42 | 375 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
376 | "interface %d: unknown DV format %u\n", |
377 | dev->udev->devnum, | |
378 | alts->desc.bInterfaceNumber, buffer[8]); | |
379 | return -EINVAL; | |
380 | } | |
381 | ||
d0ebf307 | 382 | strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", |
c0efd232 LP |
383 | sizeof format->name); |
384 | ||
385 | format->fcc = V4L2_PIX_FMT_DV; | |
386 | format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; | |
387 | format->bpp = 0; | |
388 | ftype = 0; | |
389 | ||
390 | /* Create a dummy frame descriptor. */ | |
391 | frame = &format->frame[0]; | |
392 | memset(&format->frame[0], 0, sizeof format->frame[0]); | |
393 | frame->bFrameIntervalType = 1; | |
394 | frame->dwDefaultFrameInterval = 1; | |
395 | frame->dwFrameInterval = *intervals; | |
396 | *(*intervals)++ = 1; | |
397 | format->nframes = 1; | |
398 | break; | |
399 | ||
b482d923 LP |
400 | case UVC_VS_FORMAT_MPEG2TS: |
401 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
402 | /* Not supported yet. */ |
403 | default: | |
b2d9cc42 | 404 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
405 | "interface %d unsupported format %u\n", |
406 | dev->udev->devnum, alts->desc.bInterfaceNumber, | |
407 | buffer[2]); | |
408 | return -EINVAL; | |
409 | } | |
410 | ||
411 | uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); | |
412 | ||
413 | buflen -= buffer[0]; | |
414 | buffer += buffer[0]; | |
415 | ||
416 | /* Parse the frame descriptors. Only uncompressed, MJPEG and frame | |
417 | * based formats have frame descriptors. | |
418 | */ | |
c4ed8c66 LP |
419 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
420 | buffer[2] == ftype) { | |
078f8947 | 421 | frame = &format->frame[format->nframes]; |
b482d923 | 422 | if (ftype != UVC_VS_FRAME_FRAME_BASED) |
c0efd232 LP |
423 | n = buflen > 25 ? buffer[25] : 0; |
424 | else | |
425 | n = buflen > 21 ? buffer[21] : 0; | |
426 | ||
427 | n = n ? n : 3; | |
428 | ||
429 | if (buflen < 26 + 4*n) { | |
b2d9cc42 | 430 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
431 | "interface %d FRAME error\n", dev->udev->devnum, |
432 | alts->desc.bInterfaceNumber); | |
433 | return -EINVAL; | |
434 | } | |
435 | ||
436 | frame->bFrameIndex = buffer[3]; | |
437 | frame->bmCapabilities = buffer[4]; | |
9bc6218d MH |
438 | frame->wWidth = get_unaligned_le16(&buffer[5]); |
439 | frame->wHeight = get_unaligned_le16(&buffer[7]); | |
440 | frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); | |
441 | frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); | |
b482d923 | 442 | if (ftype != UVC_VS_FRAME_FRAME_BASED) { |
c0efd232 | 443 | frame->dwMaxVideoFrameBufferSize = |
9bc6218d | 444 | get_unaligned_le32(&buffer[17]); |
c0efd232 | 445 | frame->dwDefaultFrameInterval = |
9bc6218d | 446 | get_unaligned_le32(&buffer[21]); |
c0efd232 LP |
447 | frame->bFrameIntervalType = buffer[25]; |
448 | } else { | |
449 | frame->dwMaxVideoFrameBufferSize = 0; | |
450 | frame->dwDefaultFrameInterval = | |
9bc6218d | 451 | get_unaligned_le32(&buffer[17]); |
c0efd232 LP |
452 | frame->bFrameIntervalType = buffer[21]; |
453 | } | |
454 | frame->dwFrameInterval = *intervals; | |
455 | ||
456 | /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize | |
457 | * completely. Observed behaviours range from setting the | |
2c2d264b | 458 | * value to 1.1x the actual frame size to hardwiring the |
c0efd232 LP |
459 | * 16 low bits to 0. This results in a higher than necessary |
460 | * memory usage as well as a wrong image size information. For | |
461 | * uncompressed formats this can be fixed by computing the | |
462 | * value from the frame size. | |
463 | */ | |
464 | if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) | |
465 | frame->dwMaxVideoFrameBufferSize = format->bpp | |
466 | * frame->wWidth * frame->wHeight / 8; | |
467 | ||
468 | /* Some bogus devices report dwMinFrameInterval equal to | |
469 | * dwMaxFrameInterval and have dwFrameIntervalStep set to | |
470 | * zero. Setting all null intervals to 1 fixes the problem and | |
2c2d264b | 471 | * some other divisions by zero that could happen. |
c0efd232 LP |
472 | */ |
473 | for (i = 0; i < n; ++i) { | |
9bc6218d | 474 | interval = get_unaligned_le32(&buffer[26+4*i]); |
c0efd232 LP |
475 | *(*intervals)++ = interval ? interval : 1; |
476 | } | |
477 | ||
478 | /* Make sure that the default frame interval stays between | |
479 | * the boundaries. | |
480 | */ | |
481 | n -= frame->bFrameIntervalType ? 1 : 2; | |
482 | frame->dwDefaultFrameInterval = | |
483 | min(frame->dwFrameInterval[n], | |
484 | max(frame->dwFrameInterval[0], | |
485 | frame->dwDefaultFrameInterval)); | |
486 | ||
86d8b6ab LP |
487 | if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { |
488 | frame->bFrameIntervalType = 1; | |
489 | frame->dwFrameInterval[0] = | |
490 | frame->dwDefaultFrameInterval; | |
491 | } | |
492 | ||
c0efd232 LP |
493 | uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", |
494 | frame->wWidth, frame->wHeight, | |
495 | 10000000/frame->dwDefaultFrameInterval, | |
496 | (100000000/frame->dwDefaultFrameInterval)%10); | |
497 | ||
078f8947 | 498 | format->nframes++; |
c0efd232 LP |
499 | buflen -= buffer[0]; |
500 | buffer += buffer[0]; | |
501 | } | |
502 | ||
c4ed8c66 LP |
503 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
504 | buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { | |
c0efd232 LP |
505 | buflen -= buffer[0]; |
506 | buffer += buffer[0]; | |
507 | } | |
508 | ||
c4ed8c66 LP |
509 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
510 | buffer[2] == UVC_VS_COLORFORMAT) { | |
c0efd232 | 511 | if (buflen < 6) { |
b2d9cc42 | 512 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
c0efd232 LP |
513 | "interface %d COLORFORMAT error\n", |
514 | dev->udev->devnum, | |
515 | alts->desc.bInterfaceNumber); | |
516 | return -EINVAL; | |
517 | } | |
518 | ||
519 | format->colorspace = uvc_colorspace(buffer[3]); | |
520 | ||
521 | buflen -= buffer[0]; | |
522 | buffer += buffer[0]; | |
523 | } | |
524 | ||
525 | return buffer - start; | |
526 | } | |
527 | ||
528 | static int uvc_parse_streaming(struct uvc_device *dev, | |
529 | struct usb_interface *intf) | |
530 | { | |
531 | struct uvc_streaming *streaming = NULL; | |
532 | struct uvc_format *format; | |
533 | struct uvc_frame *frame; | |
534 | struct usb_host_interface *alts = &intf->altsetting[0]; | |
535 | unsigned char *_buffer, *buffer = alts->extra; | |
536 | int _buflen, buflen = alts->extralen; | |
537 | unsigned int nformats = 0, nframes = 0, nintervals = 0; | |
538 | unsigned int size, i, n, p; | |
539 | __u32 *interval; | |
540 | __u16 psize; | |
541 | int ret = -EINVAL; | |
542 | ||
543 | if (intf->cur_altsetting->desc.bInterfaceSubClass | |
b482d923 | 544 | != UVC_SC_VIDEOSTREAMING) { |
c0efd232 LP |
545 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " |
546 | "video streaming interface\n", dev->udev->devnum, | |
547 | intf->altsetting[0].desc.bInterfaceNumber); | |
548 | return -EINVAL; | |
549 | } | |
550 | ||
551 | if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { | |
552 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " | |
553 | "claimed\n", dev->udev->devnum, | |
554 | intf->altsetting[0].desc.bInterfaceNumber); | |
555 | return -EINVAL; | |
556 | } | |
557 | ||
558 | streaming = kzalloc(sizeof *streaming, GFP_KERNEL); | |
559 | if (streaming == NULL) { | |
560 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
561 | return -EINVAL; | |
562 | } | |
563 | ||
564 | mutex_init(&streaming->mutex); | |
35f02a68 | 565 | streaming->dev = dev; |
c0efd232 LP |
566 | streaming->intf = usb_get_intf(intf); |
567 | streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
568 | ||
569 | /* The Pico iMage webcam has its class-specific interface descriptors | |
570 | * after the endpoint descriptors. | |
571 | */ | |
572 | if (buflen == 0) { | |
573 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { | |
574 | struct usb_host_endpoint *ep = &alts->endpoint[i]; | |
575 | ||
576 | if (ep->extralen == 0) | |
577 | continue; | |
578 | ||
579 | if (ep->extralen > 2 && | |
580 | ep->extra[1] == USB_DT_CS_INTERFACE) { | |
581 | uvc_trace(UVC_TRACE_DESCR, "trying extra data " | |
582 | "from endpoint %u.\n", i); | |
583 | buffer = alts->endpoint[i].extra; | |
584 | buflen = alts->endpoint[i].extralen; | |
585 | break; | |
586 | } | |
587 | } | |
588 | } | |
589 | ||
590 | /* Skip the standard interface descriptors. */ | |
591 | while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { | |
592 | buflen -= buffer[0]; | |
593 | buffer += buffer[0]; | |
594 | } | |
595 | ||
596 | if (buflen <= 2) { | |
597 | uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " | |
598 | "interface descriptors found.\n"); | |
599 | goto error; | |
600 | } | |
601 | ||
602 | /* Parse the header descriptor. */ | |
ff924203 | 603 | switch (buffer[2]) { |
b482d923 | 604 | case UVC_VS_OUTPUT_HEADER: |
ff924203 LP |
605 | streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
606 | size = 9; | |
607 | break; | |
608 | ||
b482d923 | 609 | case UVC_VS_INPUT_HEADER: |
ff924203 LP |
610 | streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
611 | size = 13; | |
612 | break; | |
613 | ||
614 | default: | |
c0efd232 | 615 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
ff924203 LP |
616 | "%d HEADER descriptor not found.\n", dev->udev->devnum, |
617 | alts->desc.bInterfaceNumber); | |
c0efd232 | 618 | goto error; |
ff924203 | 619 | } |
c0efd232 | 620 | |
ff924203 LP |
621 | p = buflen >= 4 ? buffer[3] : 0; |
622 | n = buflen >= size ? buffer[size-1] : 0; | |
623 | ||
624 | if (buflen < size + p*n) { | |
625 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " | |
626 | "interface %d HEADER descriptor is invalid.\n", | |
627 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
628 | goto error; | |
629 | } | |
c0efd232 | 630 | |
ff924203 LP |
631 | streaming->header.bNumFormats = p; |
632 | streaming->header.bEndpointAddress = buffer[6]; | |
b482d923 | 633 | if (buffer[2] == UVC_VS_INPUT_HEADER) { |
c0efd232 LP |
634 | streaming->header.bmInfo = buffer[7]; |
635 | streaming->header.bTerminalLink = buffer[8]; | |
636 | streaming->header.bStillCaptureMethod = buffer[9]; | |
637 | streaming->header.bTriggerSupport = buffer[10]; | |
638 | streaming->header.bTriggerUsage = buffer[11]; | |
c0efd232 | 639 | } else { |
ff924203 LP |
640 | streaming->header.bTerminalLink = buffer[7]; |
641 | } | |
642 | streaming->header.bControlSize = n; | |
643 | ||
0b21d55f JL |
644 | streaming->header.bmaControls = kmemdup(&buffer[size], p * n, |
645 | GFP_KERNEL); | |
ff924203 LP |
646 | if (streaming->header.bmaControls == NULL) { |
647 | ret = -ENOMEM; | |
c0efd232 LP |
648 | goto error; |
649 | } | |
650 | ||
651 | buflen -= buffer[0]; | |
652 | buffer += buffer[0]; | |
653 | ||
654 | _buffer = buffer; | |
655 | _buflen = buflen; | |
656 | ||
657 | /* Count the format and frame descriptors. */ | |
042e143e | 658 | while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 659 | switch (_buffer[2]) { |
b482d923 LP |
660 | case UVC_VS_FORMAT_UNCOMPRESSED: |
661 | case UVC_VS_FORMAT_MJPEG: | |
662 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
663 | nformats++; |
664 | break; | |
665 | ||
b482d923 | 666 | case UVC_VS_FORMAT_DV: |
c0efd232 LP |
667 | /* DV format has no frame descriptor. We will create a |
668 | * dummy frame descriptor with a dummy frame interval. | |
669 | */ | |
670 | nformats++; | |
671 | nframes++; | |
672 | nintervals++; | |
673 | break; | |
674 | ||
b482d923 LP |
675 | case UVC_VS_FORMAT_MPEG2TS: |
676 | case UVC_VS_FORMAT_STREAM_BASED: | |
c0efd232 LP |
677 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
678 | "interface %d FORMAT %u is not supported.\n", | |
679 | dev->udev->devnum, | |
680 | alts->desc.bInterfaceNumber, _buffer[2]); | |
681 | break; | |
682 | ||
b482d923 LP |
683 | case UVC_VS_FRAME_UNCOMPRESSED: |
684 | case UVC_VS_FRAME_MJPEG: | |
c0efd232 LP |
685 | nframes++; |
686 | if (_buflen > 25) | |
687 | nintervals += _buffer[25] ? _buffer[25] : 3; | |
688 | break; | |
689 | ||
b482d923 | 690 | case UVC_VS_FRAME_FRAME_BASED: |
c0efd232 LP |
691 | nframes++; |
692 | if (_buflen > 21) | |
693 | nintervals += _buffer[21] ? _buffer[21] : 3; | |
694 | break; | |
695 | } | |
696 | ||
697 | _buflen -= _buffer[0]; | |
698 | _buffer += _buffer[0]; | |
699 | } | |
700 | ||
701 | if (nformats == 0) { | |
702 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
703 | "%d has no supported formats defined.\n", | |
704 | dev->udev->devnum, alts->desc.bInterfaceNumber); | |
705 | goto error; | |
706 | } | |
707 | ||
708 | size = nformats * sizeof *format + nframes * sizeof *frame | |
709 | + nintervals * sizeof *interval; | |
710 | format = kzalloc(size, GFP_KERNEL); | |
711 | if (format == NULL) { | |
712 | ret = -ENOMEM; | |
713 | goto error; | |
714 | } | |
715 | ||
716 | frame = (struct uvc_frame *)&format[nformats]; | |
717 | interval = (__u32 *)&frame[nframes]; | |
718 | ||
719 | streaming->format = format; | |
720 | streaming->nformats = nformats; | |
721 | ||
722 | /* Parse the format descriptors. */ | |
042e143e | 723 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { |
c0efd232 | 724 | switch (buffer[2]) { |
b482d923 LP |
725 | case UVC_VS_FORMAT_UNCOMPRESSED: |
726 | case UVC_VS_FORMAT_MJPEG: | |
727 | case UVC_VS_FORMAT_DV: | |
728 | case UVC_VS_FORMAT_FRAME_BASED: | |
c0efd232 LP |
729 | format->frame = frame; |
730 | ret = uvc_parse_format(dev, streaming, format, | |
731 | &interval, buffer, buflen); | |
732 | if (ret < 0) | |
733 | goto error; | |
734 | ||
735 | frame += format->nframes; | |
736 | format++; | |
737 | ||
738 | buflen -= ret; | |
739 | buffer += ret; | |
740 | continue; | |
741 | ||
742 | default: | |
743 | break; | |
744 | } | |
745 | ||
746 | buflen -= buffer[0]; | |
747 | buffer += buffer[0]; | |
748 | } | |
749 | ||
c4ed8c66 LP |
750 | if (buflen) |
751 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " | |
752 | "%d has %u bytes of trailing descriptor garbage.\n", | |
753 | dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); | |
754 | ||
c0efd232 LP |
755 | /* Parse the alternate settings to find the maximum bandwidth. */ |
756 | for (i = 0; i < intf->num_altsetting; ++i) { | |
757 | struct usb_host_endpoint *ep; | |
758 | alts = &intf->altsetting[i]; | |
759 | ep = uvc_find_endpoint(alts, | |
760 | streaming->header.bEndpointAddress); | |
761 | if (ep == NULL) | |
762 | continue; | |
763 | ||
764 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); | |
765 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
766 | if (psize > streaming->maxpsize) | |
767 | streaming->maxpsize = psize; | |
768 | } | |
769 | ||
35f02a68 | 770 | list_add_tail(&streaming->list, &dev->streams); |
c0efd232 LP |
771 | return 0; |
772 | ||
773 | error: | |
774 | usb_driver_release_interface(&uvc_driver.driver, intf); | |
775 | usb_put_intf(intf); | |
776 | kfree(streaming->format); | |
777 | kfree(streaming->header.bmaControls); | |
778 | kfree(streaming); | |
779 | return ret; | |
780 | } | |
781 | ||
8ca5a639 LP |
782 | static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, |
783 | unsigned int num_pads, unsigned int extra_size) | |
784 | { | |
785 | struct uvc_entity *entity; | |
786 | unsigned int num_inputs; | |
787 | unsigned int size; | |
788 | ||
789 | num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; | |
790 | size = sizeof(*entity) + extra_size + num_inputs; | |
791 | entity = kzalloc(size, GFP_KERNEL); | |
792 | if (entity == NULL) | |
793 | return NULL; | |
794 | ||
795 | entity->id = id; | |
796 | entity->type = type; | |
797 | ||
798 | entity->bNrInPins = num_inputs; | |
799 | entity->baSourceID = ((__u8 *)entity) + sizeof(*entity) + extra_size; | |
800 | ||
801 | return entity; | |
802 | } | |
803 | ||
c0efd232 LP |
804 | /* Parse vendor-specific extensions. */ |
805 | static int uvc_parse_vendor_control(struct uvc_device *dev, | |
806 | const unsigned char *buffer, int buflen) | |
807 | { | |
808 | struct usb_device *udev = dev->udev; | |
809 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
810 | struct uvc_entity *unit; | |
811 | unsigned int n, p; | |
812 | int handled = 0; | |
813 | ||
814 | switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { | |
815 | case 0x046d: /* Logitech */ | |
816 | if (buffer[1] != 0x41 || buffer[2] != 0x01) | |
817 | break; | |
818 | ||
819 | /* Logitech implements several vendor specific functions | |
820 | * through vendor specific extension units (LXU). | |
821 | * | |
822 | * The LXU descriptors are similar to XU descriptors | |
823 | * (see "USB Device Video Class for Video Devices", section | |
824 | * 3.7.2.6 "Extension Unit Descriptor") with the following | |
825 | * differences: | |
826 | * | |
827 | * ---------------------------------------------------------- | |
828 | * 0 bLength 1 Number | |
829 | * Size of this descriptor, in bytes: 24+p+n*2 | |
830 | * ---------------------------------------------------------- | |
831 | * 23+p+n bmControlsType N Bitmap | |
832 | * Individual bits in the set are defined: | |
833 | * 0: Absolute | |
834 | * 1: Relative | |
835 | * | |
836 | * This bitset is mapped exactly the same as bmControls. | |
837 | * ---------------------------------------------------------- | |
838 | * 23+p+n*2 bReserved 1 Boolean | |
839 | * ---------------------------------------------------------- | |
840 | * 24+p+n*2 iExtension 1 Index | |
841 | * Index of a string descriptor that describes this | |
842 | * extension unit. | |
843 | * ---------------------------------------------------------- | |
844 | */ | |
845 | p = buflen >= 22 ? buffer[21] : 0; | |
846 | n = buflen >= 25 + p ? buffer[22+p] : 0; | |
847 | ||
848 | if (buflen < 25 + p + 2*n) { | |
849 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
850 | "interface %d EXTENSION_UNIT error\n", | |
851 | udev->devnum, alts->desc.bInterfaceNumber); | |
852 | break; | |
853 | } | |
854 | ||
8ca5a639 LP |
855 | unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], |
856 | p + 1, 2*n); | |
c0efd232 LP |
857 | if (unit == NULL) |
858 | return -ENOMEM; | |
859 | ||
c0efd232 LP |
860 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
861 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 862 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 863 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 LP |
864 | unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); |
865 | unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) | |
866 | + n; | |
c0efd232 LP |
867 | memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); |
868 | ||
869 | if (buffer[24+p+2*n] != 0) | |
870 | usb_string(udev, buffer[24+p+2*n], unit->name, | |
871 | sizeof unit->name); | |
872 | else | |
873 | sprintf(unit->name, "Extension %u", buffer[3]); | |
874 | ||
875 | list_add_tail(&unit->list, &dev->entities); | |
876 | handled = 1; | |
877 | break; | |
878 | } | |
879 | ||
880 | return handled; | |
881 | } | |
882 | ||
883 | static int uvc_parse_standard_control(struct uvc_device *dev, | |
884 | const unsigned char *buffer, int buflen) | |
885 | { | |
886 | struct usb_device *udev = dev->udev; | |
887 | struct uvc_entity *unit, *term; | |
888 | struct usb_interface *intf; | |
889 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
890 | unsigned int i, n, p, len; | |
891 | __u16 type; | |
892 | ||
893 | switch (buffer[2]) { | |
b482d923 | 894 | case UVC_VC_HEADER: |
c0efd232 LP |
895 | n = buflen >= 12 ? buffer[11] : 0; |
896 | ||
897 | if (buflen < 12 || buflen < 12 + n) { | |
898 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
899 | "interface %d HEADER error\n", udev->devnum, | |
900 | alts->desc.bInterfaceNumber); | |
901 | return -EINVAL; | |
902 | } | |
903 | ||
9bc6218d MH |
904 | dev->uvc_version = get_unaligned_le16(&buffer[3]); |
905 | dev->clock_frequency = get_unaligned_le32(&buffer[7]); | |
c0efd232 LP |
906 | |
907 | /* Parse all USB Video Streaming interfaces. */ | |
908 | for (i = 0; i < n; ++i) { | |
909 | intf = usb_ifnum_to_if(udev, buffer[12+i]); | |
910 | if (intf == NULL) { | |
911 | uvc_trace(UVC_TRACE_DESCR, "device %d " | |
912 | "interface %d doesn't exists\n", | |
913 | udev->devnum, i); | |
914 | continue; | |
915 | } | |
916 | ||
917 | uvc_parse_streaming(dev, intf); | |
918 | } | |
919 | break; | |
920 | ||
b482d923 | 921 | case UVC_VC_INPUT_TERMINAL: |
c0efd232 LP |
922 | if (buflen < 8) { |
923 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
924 | "interface %d INPUT_TERMINAL error\n", | |
925 | udev->devnum, alts->desc.bInterfaceNumber); | |
926 | return -EINVAL; | |
927 | } | |
928 | ||
929 | /* Make sure the terminal type MSB is not null, otherwise it | |
930 | * could be confused with a unit. | |
931 | */ | |
9bc6218d | 932 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
933 | if ((type & 0xff00) == 0) { |
934 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
935 | "interface %d INPUT_TERMINAL %d has invalid " | |
936 | "type 0x%04x, skipping\n", udev->devnum, | |
937 | alts->desc.bInterfaceNumber, | |
938 | buffer[3], type); | |
939 | return 0; | |
940 | } | |
941 | ||
942 | n = 0; | |
943 | p = 0; | |
944 | len = 8; | |
945 | ||
b482d923 | 946 | if (type == UVC_ITT_CAMERA) { |
c0efd232 LP |
947 | n = buflen >= 15 ? buffer[14] : 0; |
948 | len = 15; | |
949 | ||
b482d923 | 950 | } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
c0efd232 LP |
951 | n = buflen >= 9 ? buffer[8] : 0; |
952 | p = buflen >= 10 + n ? buffer[9+n] : 0; | |
953 | len = 10; | |
954 | } | |
955 | ||
956 | if (buflen < len + n + p) { | |
957 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
958 | "interface %d INPUT_TERMINAL error\n", | |
959 | udev->devnum, alts->desc.bInterfaceNumber); | |
960 | return -EINVAL; | |
961 | } | |
962 | ||
8ca5a639 LP |
963 | term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], |
964 | 1, n + p); | |
c0efd232 LP |
965 | if (term == NULL) |
966 | return -ENOMEM; | |
967 | ||
b482d923 | 968 | if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { |
c0efd232 LP |
969 | term->camera.bControlSize = n; |
970 | term->camera.bmControls = (__u8 *)term + sizeof *term; | |
971 | term->camera.wObjectiveFocalLengthMin = | |
9bc6218d | 972 | get_unaligned_le16(&buffer[8]); |
c0efd232 | 973 | term->camera.wObjectiveFocalLengthMax = |
9bc6218d | 974 | get_unaligned_le16(&buffer[10]); |
c0efd232 | 975 | term->camera.wOcularFocalLength = |
9bc6218d | 976 | get_unaligned_le16(&buffer[12]); |
c0efd232 | 977 | memcpy(term->camera.bmControls, &buffer[15], n); |
b482d923 LP |
978 | } else if (UVC_ENTITY_TYPE(term) == |
979 | UVC_ITT_MEDIA_TRANSPORT_INPUT) { | |
c0efd232 LP |
980 | term->media.bControlSize = n; |
981 | term->media.bmControls = (__u8 *)term + sizeof *term; | |
982 | term->media.bTransportModeSize = p; | |
983 | term->media.bmTransportModes = (__u8 *)term | |
984 | + sizeof *term + n; | |
985 | memcpy(term->media.bmControls, &buffer[9], n); | |
986 | memcpy(term->media.bmTransportModes, &buffer[10+n], p); | |
987 | } | |
988 | ||
989 | if (buffer[7] != 0) | |
990 | usb_string(udev, buffer[7], term->name, | |
991 | sizeof term->name); | |
b482d923 | 992 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) |
c0efd232 | 993 | sprintf(term->name, "Camera %u", buffer[3]); |
b482d923 | 994 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) |
c0efd232 LP |
995 | sprintf(term->name, "Media %u", buffer[3]); |
996 | else | |
997 | sprintf(term->name, "Input %u", buffer[3]); | |
998 | ||
999 | list_add_tail(&term->list, &dev->entities); | |
1000 | break; | |
1001 | ||
b482d923 | 1002 | case UVC_VC_OUTPUT_TERMINAL: |
c0efd232 LP |
1003 | if (buflen < 9) { |
1004 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1005 | "interface %d OUTPUT_TERMINAL error\n", | |
1006 | udev->devnum, alts->desc.bInterfaceNumber); | |
1007 | return -EINVAL; | |
1008 | } | |
1009 | ||
1010 | /* Make sure the terminal type MSB is not null, otherwise it | |
1011 | * could be confused with a unit. | |
1012 | */ | |
9bc6218d | 1013 | type = get_unaligned_le16(&buffer[4]); |
c0efd232 LP |
1014 | if ((type & 0xff00) == 0) { |
1015 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1016 | "interface %d OUTPUT_TERMINAL %d has invalid " | |
1017 | "type 0x%04x, skipping\n", udev->devnum, | |
1018 | alts->desc.bInterfaceNumber, buffer[3], type); | |
1019 | return 0; | |
1020 | } | |
1021 | ||
8ca5a639 LP |
1022 | term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], |
1023 | 1, 0); | |
c0efd232 LP |
1024 | if (term == NULL) |
1025 | return -ENOMEM; | |
1026 | ||
8ca5a639 | 1027 | memcpy(term->baSourceID, &buffer[7], 1); |
c0efd232 LP |
1028 | |
1029 | if (buffer[8] != 0) | |
1030 | usb_string(udev, buffer[8], term->name, | |
1031 | sizeof term->name); | |
1032 | else | |
1033 | sprintf(term->name, "Output %u", buffer[3]); | |
1034 | ||
1035 | list_add_tail(&term->list, &dev->entities); | |
1036 | break; | |
1037 | ||
b482d923 | 1038 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1039 | p = buflen >= 5 ? buffer[4] : 0; |
1040 | ||
1041 | if (buflen < 5 || buflen < 6 + p) { | |
1042 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1043 | "interface %d SELECTOR_UNIT error\n", | |
1044 | udev->devnum, alts->desc.bInterfaceNumber); | |
1045 | return -EINVAL; | |
1046 | } | |
1047 | ||
8ca5a639 | 1048 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); |
c0efd232 LP |
1049 | if (unit == NULL) |
1050 | return -ENOMEM; | |
1051 | ||
8ca5a639 | 1052 | memcpy(unit->baSourceID, &buffer[5], p); |
c0efd232 LP |
1053 | |
1054 | if (buffer[5+p] != 0) | |
1055 | usb_string(udev, buffer[5+p], unit->name, | |
1056 | sizeof unit->name); | |
1057 | else | |
1058 | sprintf(unit->name, "Selector %u", buffer[3]); | |
1059 | ||
1060 | list_add_tail(&unit->list, &dev->entities); | |
1061 | break; | |
1062 | ||
b482d923 | 1063 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1064 | n = buflen >= 8 ? buffer[7] : 0; |
1065 | p = dev->uvc_version >= 0x0110 ? 10 : 9; | |
1066 | ||
1067 | if (buflen < p + n) { | |
1068 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1069 | "interface %d PROCESSING_UNIT error\n", | |
1070 | udev->devnum, alts->desc.bInterfaceNumber); | |
1071 | return -EINVAL; | |
1072 | } | |
1073 | ||
8ca5a639 | 1074 | unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); |
c0efd232 LP |
1075 | if (unit == NULL) |
1076 | return -ENOMEM; | |
1077 | ||
8ca5a639 | 1078 | memcpy(unit->baSourceID, &buffer[4], 1); |
c0efd232 | 1079 | unit->processing.wMaxMultiplier = |
9bc6218d | 1080 | get_unaligned_le16(&buffer[5]); |
c0efd232 LP |
1081 | unit->processing.bControlSize = buffer[7]; |
1082 | unit->processing.bmControls = (__u8 *)unit + sizeof *unit; | |
1083 | memcpy(unit->processing.bmControls, &buffer[8], n); | |
1084 | if (dev->uvc_version >= 0x0110) | |
1085 | unit->processing.bmVideoStandards = buffer[9+n]; | |
1086 | ||
1087 | if (buffer[8+n] != 0) | |
1088 | usb_string(udev, buffer[8+n], unit->name, | |
1089 | sizeof unit->name); | |
1090 | else | |
1091 | sprintf(unit->name, "Processing %u", buffer[3]); | |
1092 | ||
1093 | list_add_tail(&unit->list, &dev->entities); | |
1094 | break; | |
1095 | ||
b482d923 | 1096 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1097 | p = buflen >= 22 ? buffer[21] : 0; |
1098 | n = buflen >= 24 + p ? buffer[22+p] : 0; | |
1099 | ||
1100 | if (buflen < 24 + p + n) { | |
1101 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " | |
1102 | "interface %d EXTENSION_UNIT error\n", | |
1103 | udev->devnum, alts->desc.bInterfaceNumber); | |
1104 | return -EINVAL; | |
1105 | } | |
1106 | ||
8ca5a639 | 1107 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); |
c0efd232 LP |
1108 | if (unit == NULL) |
1109 | return -ENOMEM; | |
1110 | ||
c0efd232 LP |
1111 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
1112 | unit->extension.bNumControls = buffer[20]; | |
8ca5a639 | 1113 | memcpy(unit->baSourceID, &buffer[22], p); |
c0efd232 | 1114 | unit->extension.bControlSize = buffer[22+p]; |
8ca5a639 | 1115 | unit->extension.bmControls = (__u8 *)unit + sizeof *unit; |
c0efd232 LP |
1116 | memcpy(unit->extension.bmControls, &buffer[23+p], n); |
1117 | ||
1118 | if (buffer[23+p+n] != 0) | |
1119 | usb_string(udev, buffer[23+p+n], unit->name, | |
1120 | sizeof unit->name); | |
1121 | else | |
1122 | sprintf(unit->name, "Extension %u", buffer[3]); | |
1123 | ||
1124 | list_add_tail(&unit->list, &dev->entities); | |
1125 | break; | |
1126 | ||
1127 | default: | |
1128 | uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " | |
1129 | "descriptor (%u)\n", buffer[2]); | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | static int uvc_parse_control(struct uvc_device *dev) | |
1137 | { | |
1138 | struct usb_host_interface *alts = dev->intf->cur_altsetting; | |
1139 | unsigned char *buffer = alts->extra; | |
1140 | int buflen = alts->extralen; | |
1141 | int ret; | |
1142 | ||
1143 | /* Parse the default alternate setting only, as the UVC specification | |
1144 | * defines a single alternate setting, the default alternate setting | |
1145 | * zero. | |
1146 | */ | |
1147 | ||
1148 | while (buflen > 2) { | |
1149 | if (uvc_parse_vendor_control(dev, buffer, buflen) || | |
1150 | buffer[1] != USB_DT_CS_INTERFACE) | |
1151 | goto next_descriptor; | |
1152 | ||
1153 | if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) | |
1154 | return ret; | |
1155 | ||
1156 | next_descriptor: | |
1157 | buflen -= buffer[0]; | |
1158 | buffer += buffer[0]; | |
1159 | } | |
1160 | ||
538e7a00 LP |
1161 | /* Check if the optional status endpoint is present. Built-in iSight |
1162 | * webcams have an interrupt endpoint but spit proprietary data that | |
1163 | * don't conform to the UVC status endpoint messages. Don't try to | |
1164 | * handle the interrupt endpoint for those cameras. | |
1165 | */ | |
1166 | if (alts->desc.bNumEndpoints == 1 && | |
1167 | !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { | |
c0efd232 LP |
1168 | struct usb_host_endpoint *ep = &alts->endpoint[0]; |
1169 | struct usb_endpoint_descriptor *desc = &ep->desc; | |
1170 | ||
1171 | if (usb_endpoint_is_int_in(desc) && | |
1172 | le16_to_cpu(desc->wMaxPacketSize) >= 8 && | |
1173 | desc->bInterval != 0) { | |
1174 | uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " | |
1175 | "(addr %02x).\n", desc->bEndpointAddress); | |
1176 | dev->int_ep = ep; | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | /* ------------------------------------------------------------------------ | |
8e113595 | 1184 | * UVC device scan |
c0efd232 LP |
1185 | */ |
1186 | ||
c0efd232 LP |
1187 | /* |
1188 | * Scan the UVC descriptors to locate a chain starting at an Output Terminal | |
1189 | * and containing the following units: | |
1190 | * | |
8e113595 | 1191 | * - one or more Output Terminals (USB Streaming or Display) |
c0efd232 | 1192 | * - zero or one Processing Unit |
8e113595 | 1193 | * - zero, one or more single-input Selector Units |
c0efd232 LP |
1194 | * - zero or one multiple-input Selector Units, provided all inputs are |
1195 | * connected to input terminals | |
1196 | * - zero, one or mode single-input Extension Units | |
2c2d264b | 1197 | * - one or more Input Terminals (Camera, External or USB Streaming) |
c0efd232 | 1198 | * |
8e113595 LP |
1199 | * The terminal and units must match on of the following structures: |
1200 | * | |
1201 | * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) | |
1202 | * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... | |
1203 | * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) | |
1204 | * | |
1205 | * +---------+ +---------+ -> OTT_*(0) | |
1206 | * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... | |
1207 | * +---------+ +---------+ -> OTT_*(n) | |
1208 | * | |
1209 | * The Processing Unit and Extension Units can be in any order. Additional | |
1210 | * Extension Units connected to the main chain as single-unit branches are | |
1211 | * also supported. Single-input Selector Units are ignored. | |
c0efd232 | 1212 | */ |
8e113595 | 1213 | static int uvc_scan_chain_entity(struct uvc_video_chain *chain, |
c0efd232 LP |
1214 | struct uvc_entity *entity) |
1215 | { | |
1216 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1217 | case UVC_VC_EXTENSION_UNIT: |
c0efd232 LP |
1218 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1219 | printk(" <- XU %d", entity->id); | |
1220 | ||
8ca5a639 | 1221 | if (entity->bNrInPins != 1) { |
c0efd232 LP |
1222 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " |
1223 | "than 1 input pin.\n", entity->id); | |
1224 | return -1; | |
1225 | } | |
1226 | ||
c0efd232 LP |
1227 | break; |
1228 | ||
b482d923 | 1229 | case UVC_VC_PROCESSING_UNIT: |
c0efd232 LP |
1230 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1231 | printk(" <- PU %d", entity->id); | |
1232 | ||
8e113595 | 1233 | if (chain->processing != NULL) { |
c0efd232 LP |
1234 | uvc_trace(UVC_TRACE_DESCR, "Found multiple " |
1235 | "Processing Units in chain.\n"); | |
1236 | return -1; | |
1237 | } | |
1238 | ||
8e113595 | 1239 | chain->processing = entity; |
c0efd232 LP |
1240 | break; |
1241 | ||
b482d923 | 1242 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 LP |
1243 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1244 | printk(" <- SU %d", entity->id); | |
1245 | ||
1246 | /* Single-input selector units are ignored. */ | |
8ca5a639 | 1247 | if (entity->bNrInPins == 1) |
c0efd232 LP |
1248 | break; |
1249 | ||
8e113595 | 1250 | if (chain->selector != NULL) { |
c0efd232 LP |
1251 | uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " |
1252 | "Units in chain.\n"); | |
1253 | return -1; | |
1254 | } | |
1255 | ||
8e113595 | 1256 | chain->selector = entity; |
c0efd232 LP |
1257 | break; |
1258 | ||
b482d923 LP |
1259 | case UVC_ITT_VENDOR_SPECIFIC: |
1260 | case UVC_ITT_CAMERA: | |
1261 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
c0efd232 LP |
1262 | if (uvc_trace_param & UVC_TRACE_PROBE) |
1263 | printk(" <- IT %d\n", entity->id); | |
1264 | ||
c0efd232 LP |
1265 | break; |
1266 | ||
b482d923 | 1267 | case UVC_TT_STREAMING: |
4057ac6c LP |
1268 | if (UVC_ENTITY_IS_ITERM(entity)) { |
1269 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1270 | printk(" <- IT %d\n", entity->id); | |
1271 | } else { | |
1272 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1273 | printk(" OT %d", entity->id); | |
ff924203 LP |
1274 | } |
1275 | ||
ff924203 LP |
1276 | break; |
1277 | ||
c0efd232 LP |
1278 | default: |
1279 | uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " | |
1280 | "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); | |
1281 | return -1; | |
1282 | } | |
1283 | ||
6241d8ca | 1284 | list_add_tail(&entity->chain, &chain->entities); |
c0efd232 LP |
1285 | return 0; |
1286 | } | |
1287 | ||
8e113595 | 1288 | static int uvc_scan_chain_forward(struct uvc_video_chain *chain, |
c0efd232 LP |
1289 | struct uvc_entity *entity, struct uvc_entity *prev) |
1290 | { | |
1291 | struct uvc_entity *forward; | |
1292 | int found; | |
1293 | ||
1294 | /* Forward scan */ | |
1295 | forward = NULL; | |
1296 | found = 0; | |
1297 | ||
1298 | while (1) { | |
8e113595 | 1299 | forward = uvc_entity_by_reference(chain->dev, entity->id, |
c0efd232 LP |
1300 | forward); |
1301 | if (forward == NULL) | |
1302 | break; | |
8e113595 | 1303 | if (forward == prev) |
c0efd232 LP |
1304 | continue; |
1305 | ||
8e113595 LP |
1306 | switch (UVC_ENTITY_TYPE(forward)) { |
1307 | case UVC_VC_EXTENSION_UNIT: | |
8ca5a639 | 1308 | if (forward->bNrInPins != 1) { |
8e113595 LP |
1309 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " |
1310 | "has more than 1 input pin.\n", | |
1311 | entity->id); | |
1312 | return -EINVAL; | |
1313 | } | |
c0efd232 | 1314 | |
6241d8ca | 1315 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1316 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1317 | if (!found) | |
1318 | printk(" (->"); | |
1319 | ||
1320 | printk(" XU %d", forward->id); | |
1321 | found = 1; | |
1322 | } | |
1323 | break; | |
1324 | ||
1325 | case UVC_OTT_VENDOR_SPECIFIC: | |
1326 | case UVC_OTT_DISPLAY: | |
1327 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1328 | case UVC_TT_STREAMING: | |
1329 | if (UVC_ENTITY_IS_ITERM(forward)) { | |
1330 | uvc_trace(UVC_TRACE_DESCR, "Unsupported input " | |
1331 | "terminal %u.\n", forward->id); | |
1332 | return -EINVAL; | |
1333 | } | |
c0efd232 | 1334 | |
6241d8ca | 1335 | list_add_tail(&forward->chain, &chain->entities); |
8e113595 LP |
1336 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
1337 | if (!found) | |
1338 | printk(" (->"); | |
1339 | ||
1340 | printk(" OT %d", forward->id); | |
1341 | found = 1; | |
1342 | } | |
1343 | break; | |
c0efd232 LP |
1344 | } |
1345 | } | |
1346 | if (found) | |
1347 | printk(")"); | |
1348 | ||
1349 | return 0; | |
1350 | } | |
1351 | ||
8e113595 | 1352 | static int uvc_scan_chain_backward(struct uvc_video_chain *chain, |
4057ac6c | 1353 | struct uvc_entity **_entity) |
c0efd232 | 1354 | { |
4057ac6c | 1355 | struct uvc_entity *entity = *_entity; |
c0efd232 | 1356 | struct uvc_entity *term; |
4057ac6c | 1357 | int id = -EINVAL, i; |
c0efd232 LP |
1358 | |
1359 | switch (UVC_ENTITY_TYPE(entity)) { | |
b482d923 | 1360 | case UVC_VC_EXTENSION_UNIT: |
b482d923 | 1361 | case UVC_VC_PROCESSING_UNIT: |
8ca5a639 | 1362 | id = entity->baSourceID[0]; |
c0efd232 LP |
1363 | break; |
1364 | ||
b482d923 | 1365 | case UVC_VC_SELECTOR_UNIT: |
c0efd232 | 1366 | /* Single-input selector units are ignored. */ |
8ca5a639 LP |
1367 | if (entity->bNrInPins == 1) { |
1368 | id = entity->baSourceID[0]; | |
c0efd232 LP |
1369 | break; |
1370 | } | |
1371 | ||
1372 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1373 | printk(" <- IT"); | |
1374 | ||
8e113595 | 1375 | chain->selector = entity; |
8ca5a639 LP |
1376 | for (i = 0; i < entity->bNrInPins; ++i) { |
1377 | id = entity->baSourceID[i]; | |
8e113595 | 1378 | term = uvc_entity_by_id(chain->dev, id); |
c0efd232 LP |
1379 | if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { |
1380 | uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " | |
1381 | "input %d isn't connected to an " | |
1382 | "input terminal\n", entity->id, i); | |
1383 | return -1; | |
1384 | } | |
1385 | ||
1386 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1387 | printk(" %d", term->id); | |
1388 | ||
6241d8ca | 1389 | list_add_tail(&term->chain, &chain->entities); |
8e113595 | 1390 | uvc_scan_chain_forward(chain, term, entity); |
c0efd232 LP |
1391 | } |
1392 | ||
1393 | if (uvc_trace_param & UVC_TRACE_PROBE) | |
1394 | printk("\n"); | |
1395 | ||
1396 | id = 0; | |
1397 | break; | |
4057ac6c LP |
1398 | |
1399 | case UVC_ITT_VENDOR_SPECIFIC: | |
1400 | case UVC_ITT_CAMERA: | |
1401 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: | |
1402 | case UVC_OTT_VENDOR_SPECIFIC: | |
1403 | case UVC_OTT_DISPLAY: | |
1404 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: | |
1405 | case UVC_TT_STREAMING: | |
8ca5a639 | 1406 | id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; |
4057ac6c | 1407 | break; |
c0efd232 LP |
1408 | } |
1409 | ||
4057ac6c LP |
1410 | if (id <= 0) { |
1411 | *_entity = NULL; | |
1412 | return id; | |
1413 | } | |
1414 | ||
1415 | entity = uvc_entity_by_id(chain->dev, id); | |
1416 | if (entity == NULL) { | |
1417 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
1418 | "unknown entity %d.\n", id); | |
1419 | return -EINVAL; | |
1420 | } | |
1421 | ||
1422 | *_entity = entity; | |
1423 | return 0; | |
c0efd232 LP |
1424 | } |
1425 | ||
8e113595 | 1426 | static int uvc_scan_chain(struct uvc_video_chain *chain, |
4057ac6c | 1427 | struct uvc_entity *term) |
c0efd232 LP |
1428 | { |
1429 | struct uvc_entity *entity, *prev; | |
c0efd232 | 1430 | |
4057ac6c | 1431 | uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); |
ff924203 | 1432 | |
4057ac6c LP |
1433 | entity = term; |
1434 | prev = NULL; | |
8e113595 | 1435 | |
4057ac6c LP |
1436 | while (entity != NULL) { |
1437 | /* Entity must not be part of an existing chain */ | |
8e113595 LP |
1438 | if (entity->chain.next || entity->chain.prev) { |
1439 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " | |
4057ac6c | 1440 | "entity %d already in chain.\n", entity->id); |
8e113595 | 1441 | return -EINVAL; |
c0efd232 LP |
1442 | } |
1443 | ||
1444 | /* Process entity */ | |
8e113595 LP |
1445 | if (uvc_scan_chain_entity(chain, entity) < 0) |
1446 | return -EINVAL; | |
c0efd232 LP |
1447 | |
1448 | /* Forward scan */ | |
8e113595 LP |
1449 | if (uvc_scan_chain_forward(chain, entity, prev) < 0) |
1450 | return -EINVAL; | |
c0efd232 | 1451 | |
c0efd232 | 1452 | /* Backward scan */ |
4057ac6c LP |
1453 | prev = entity; |
1454 | if (uvc_scan_chain_backward(chain, &entity) < 0) | |
1455 | return -EINVAL; | |
c0efd232 LP |
1456 | } |
1457 | ||
8e113595 LP |
1458 | return 0; |
1459 | } | |
1460 | ||
6241d8ca LP |
1461 | static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, |
1462 | char *buffer) | |
8e113595 LP |
1463 | { |
1464 | struct uvc_entity *term; | |
1465 | unsigned int nterms = 0; | |
1466 | char *p = buffer; | |
1467 | ||
1468 | list_for_each_entry(term, terms, chain) { | |
6241d8ca LP |
1469 | if (!UVC_ENTITY_IS_TERM(term) || |
1470 | UVC_TERM_DIRECTION(term) != dir) | |
1471 | continue; | |
1472 | ||
1473 | if (nterms) | |
8e113595 | 1474 | p += sprintf(p, ","); |
6241d8ca LP |
1475 | if (++nterms >= 4) { |
1476 | p += sprintf(p, "..."); | |
1477 | break; | |
8e113595 | 1478 | } |
6241d8ca | 1479 | p += sprintf(p, "%u", term->id); |
ff924203 | 1480 | } |
c0efd232 | 1481 | |
8e113595 LP |
1482 | return p - buffer; |
1483 | } | |
1484 | ||
1485 | static const char *uvc_print_chain(struct uvc_video_chain *chain) | |
1486 | { | |
1487 | static char buffer[43]; | |
1488 | char *p = buffer; | |
1489 | ||
6241d8ca | 1490 | p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); |
8e113595 | 1491 | p += sprintf(p, " -> "); |
6241d8ca | 1492 | uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); |
8e113595 LP |
1493 | |
1494 | return buffer; | |
c0efd232 LP |
1495 | } |
1496 | ||
1497 | /* | |
35f02a68 | 1498 | * Scan the device for video chains and register video devices. |
c0efd232 | 1499 | * |
8e113595 | 1500 | * Chains are scanned starting at their output terminals and walked backwards. |
c0efd232 | 1501 | */ |
35f02a68 | 1502 | static int uvc_scan_device(struct uvc_device *dev) |
c0efd232 | 1503 | { |
8e113595 | 1504 | struct uvc_video_chain *chain; |
c0efd232 | 1505 | struct uvc_entity *term; |
c0efd232 | 1506 | |
c0efd232 | 1507 | list_for_each_entry(term, &dev->entities, list) { |
8e113595 | 1508 | if (!UVC_ENTITY_IS_OTERM(term)) |
c0efd232 LP |
1509 | continue; |
1510 | ||
8e113595 LP |
1511 | /* If the terminal is already included in a chain, skip it. |
1512 | * This can happen for chains that have multiple output | |
1513 | * terminals, where all output terminals beside the first one | |
1514 | * will be inserted in the chain in forward scans. | |
1515 | */ | |
1516 | if (term->chain.next || term->chain.prev) | |
c0efd232 LP |
1517 | continue; |
1518 | ||
8e113595 LP |
1519 | chain = kzalloc(sizeof(*chain), GFP_KERNEL); |
1520 | if (chain == NULL) | |
1521 | return -ENOMEM; | |
1522 | ||
6241d8ca | 1523 | INIT_LIST_HEAD(&chain->entities); |
8e113595 LP |
1524 | mutex_init(&chain->ctrl_mutex); |
1525 | chain->dev = dev; | |
1526 | ||
1527 | if (uvc_scan_chain(chain, term) < 0) { | |
1528 | kfree(chain); | |
1529 | continue; | |
c0efd232 | 1530 | } |
8e113595 LP |
1531 | |
1532 | uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", | |
1533 | uvc_print_chain(chain)); | |
1534 | ||
1535 | list_add_tail(&chain->list, &dev->chains); | |
c0efd232 LP |
1536 | } |
1537 | ||
8e113595 | 1538 | if (list_empty(&dev->chains)) { |
c0efd232 LP |
1539 | uvc_printk(KERN_INFO, "No valid video chain found.\n"); |
1540 | return -1; | |
1541 | } | |
1542 | ||
c0efd232 LP |
1543 | return 0; |
1544 | } | |
1545 | ||
8e113595 LP |
1546 | /* ------------------------------------------------------------------------ |
1547 | * Video device registration and unregistration | |
1548 | */ | |
1549 | ||
716fdee1 LP |
1550 | /* |
1551 | * Delete the UVC device. | |
1552 | * | |
1553 | * Called by the kernel when the last reference to the uvc_device structure | |
1554 | * is released. | |
1555 | * | |
1556 | * As this function is called after or during disconnect(), all URBs have | |
1557 | * already been canceled by the USB core. There is no need to kill the | |
1558 | * interrupt URB manually. | |
1559 | */ | |
1560 | static void uvc_delete(struct uvc_device *dev) | |
1561 | { | |
1562 | struct list_head *p, *n; | |
1563 | ||
1564 | usb_put_intf(dev->intf); | |
1565 | usb_put_dev(dev->udev); | |
1566 | ||
1567 | uvc_status_cleanup(dev); | |
1568 | uvc_ctrl_cleanup_device(dev); | |
1569 | ||
1570 | list_for_each_safe(p, n, &dev->chains) { | |
1571 | struct uvc_video_chain *chain; | |
1572 | chain = list_entry(p, struct uvc_video_chain, list); | |
1573 | kfree(chain); | |
1574 | } | |
1575 | ||
1576 | list_for_each_safe(p, n, &dev->entities) { | |
1577 | struct uvc_entity *entity; | |
1578 | entity = list_entry(p, struct uvc_entity, list); | |
1579 | kfree(entity); | |
1580 | } | |
1581 | ||
1582 | list_for_each_safe(p, n, &dev->streams) { | |
1583 | struct uvc_streaming *streaming; | |
1584 | streaming = list_entry(p, struct uvc_streaming, list); | |
1585 | usb_driver_release_interface(&uvc_driver.driver, | |
1586 | streaming->intf); | |
1587 | usb_put_intf(streaming->intf); | |
1588 | kfree(streaming->format); | |
1589 | kfree(streaming->header.bmaControls); | |
1590 | kfree(streaming); | |
1591 | } | |
1592 | ||
1593 | kfree(dev); | |
1594 | } | |
1595 | ||
1596 | static void uvc_release(struct video_device *vdev) | |
1597 | { | |
1598 | struct uvc_streaming *stream = video_get_drvdata(vdev); | |
1599 | struct uvc_device *dev = stream->dev; | |
1600 | ||
1601 | video_device_release(vdev); | |
1602 | ||
1603 | /* Decrement the registered streams count and delete the device when it | |
1604 | * reaches zero. | |
1605 | */ | |
1606 | if (atomic_dec_and_test(&dev->nstreams)) | |
1607 | uvc_delete(dev); | |
1608 | } | |
1609 | ||
8e113595 LP |
1610 | /* |
1611 | * Unregister the video devices. | |
1612 | */ | |
1613 | static void uvc_unregister_video(struct uvc_device *dev) | |
1614 | { | |
1615 | struct uvc_streaming *stream; | |
1616 | ||
716fdee1 LP |
1617 | /* Unregistering all video devices might result in uvc_delete() being |
1618 | * called from inside the loop if there's no open file handle. To avoid | |
1619 | * that, increment the stream count before iterating over the streams | |
1620 | * and decrement it when done. | |
1621 | */ | |
1622 | atomic_inc(&dev->nstreams); | |
1623 | ||
8e113595 LP |
1624 | list_for_each_entry(stream, &dev->streams, list) { |
1625 | if (stream->vdev == NULL) | |
1626 | continue; | |
1627 | ||
716fdee1 | 1628 | video_unregister_device(stream->vdev); |
8e113595 LP |
1629 | stream->vdev = NULL; |
1630 | } | |
716fdee1 LP |
1631 | |
1632 | /* Decrement the stream count and call uvc_delete explicitly if there | |
1633 | * are no stream left. | |
1634 | */ | |
1635 | if (atomic_dec_and_test(&dev->nstreams)) | |
1636 | uvc_delete(dev); | |
8e113595 LP |
1637 | } |
1638 | ||
1639 | static int uvc_register_video(struct uvc_device *dev, | |
1640 | struct uvc_streaming *stream) | |
1641 | { | |
1642 | struct video_device *vdev; | |
1643 | int ret; | |
1644 | ||
1645 | /* Initialize the streaming interface with default streaming | |
1646 | * parameters. | |
1647 | */ | |
1648 | ret = uvc_video_init(stream); | |
1649 | if (ret < 0) { | |
1650 | uvc_printk(KERN_ERR, "Failed to initialize the device " | |
1651 | "(%d).\n", ret); | |
1652 | return ret; | |
1653 | } | |
1654 | ||
1655 | /* Register the device with V4L. */ | |
1656 | vdev = video_device_alloc(); | |
1657 | if (vdev == NULL) { | |
1658 | uvc_printk(KERN_ERR, "Failed to allocate video device (%d).\n", | |
1659 | ret); | |
1660 | return -ENOMEM; | |
1661 | } | |
1662 | ||
1663 | /* We already hold a reference to dev->udev. The video device will be | |
1664 | * unregistered before the reference is released, so we don't need to | |
1665 | * get another one. | |
1666 | */ | |
1667 | vdev->parent = &dev->intf->dev; | |
8e113595 | 1668 | vdev->fops = &uvc_fops; |
716fdee1 | 1669 | vdev->release = uvc_release; |
8e113595 LP |
1670 | strlcpy(vdev->name, dev->name, sizeof vdev->name); |
1671 | ||
1672 | /* Set the driver data before calling video_register_device, otherwise | |
1673 | * uvc_v4l2_open might race us. | |
1674 | */ | |
1675 | stream->vdev = vdev; | |
1676 | video_set_drvdata(vdev, stream); | |
1677 | ||
1678 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); | |
1679 | if (ret < 0) { | |
1680 | uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", | |
1681 | ret); | |
1682 | stream->vdev = NULL; | |
1683 | video_device_release(vdev); | |
1684 | return ret; | |
1685 | } | |
1686 | ||
716fdee1 | 1687 | atomic_inc(&dev->nstreams); |
8e113595 LP |
1688 | return 0; |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * Register all video devices in all chains. | |
1693 | */ | |
1694 | static int uvc_register_terms(struct uvc_device *dev, | |
6241d8ca | 1695 | struct uvc_video_chain *chain) |
8e113595 LP |
1696 | { |
1697 | struct uvc_streaming *stream; | |
1698 | struct uvc_entity *term; | |
1699 | int ret; | |
1700 | ||
6241d8ca | 1701 | list_for_each_entry(term, &chain->entities, chain) { |
8e113595 LP |
1702 | if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) |
1703 | continue; | |
1704 | ||
1705 | stream = uvc_stream_by_id(dev, term->id); | |
1706 | if (stream == NULL) { | |
1707 | uvc_printk(KERN_INFO, "No streaming interface found " | |
1708 | "for terminal %u.", term->id); | |
1709 | continue; | |
1710 | } | |
1711 | ||
1712 | stream->chain = chain; | |
1713 | ret = uvc_register_video(dev, stream); | |
1714 | if (ret < 0) | |
1715 | return ret; | |
1716 | } | |
1717 | ||
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | static int uvc_register_chains(struct uvc_device *dev) | |
1722 | { | |
1723 | struct uvc_video_chain *chain; | |
1724 | int ret; | |
1725 | ||
1726 | list_for_each_entry(chain, &dev->chains, list) { | |
6241d8ca | 1727 | ret = uvc_register_terms(dev, chain); |
8e113595 LP |
1728 | if (ret < 0) |
1729 | return ret; | |
1730 | } | |
1731 | ||
1732 | return 0; | |
1733 | } | |
1734 | ||
1735 | /* ------------------------------------------------------------------------ | |
1736 | * USB probe, disconnect, suspend and resume | |
1737 | */ | |
1738 | ||
c0efd232 LP |
1739 | static int uvc_probe(struct usb_interface *intf, |
1740 | const struct usb_device_id *id) | |
1741 | { | |
1742 | struct usb_device *udev = interface_to_usbdev(intf); | |
1743 | struct uvc_device *dev; | |
1744 | int ret; | |
1745 | ||
1746 | if (id->idVendor && id->idProduct) | |
1747 | uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " | |
1748 | "(%04x:%04x)\n", udev->devpath, id->idVendor, | |
1749 | id->idProduct); | |
1750 | else | |
1751 | uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", | |
1752 | udev->devpath); | |
1753 | ||
2c2d264b | 1754 | /* Allocate memory for the device and initialize it. */ |
c0efd232 LP |
1755 | if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) |
1756 | return -ENOMEM; | |
1757 | ||
1758 | INIT_LIST_HEAD(&dev->entities); | |
8e113595 | 1759 | INIT_LIST_HEAD(&dev->chains); |
35f02a68 | 1760 | INIT_LIST_HEAD(&dev->streams); |
716fdee1 | 1761 | atomic_set(&dev->nstreams, 0); |
04a37e0f | 1762 | atomic_set(&dev->users, 0); |
8fb91b33 | 1763 | atomic_set(&dev->nmappings, 0); |
c0efd232 LP |
1764 | |
1765 | dev->udev = usb_get_dev(udev); | |
1766 | dev->intf = usb_get_intf(intf); | |
1767 | dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
73de3592 LP |
1768 | dev->quirks = (uvc_quirks_param == -1) |
1769 | ? id->driver_info : uvc_quirks_param; | |
c0efd232 LP |
1770 | |
1771 | if (udev->product != NULL) | |
d0ebf307 | 1772 | strlcpy(dev->name, udev->product, sizeof dev->name); |
c0efd232 LP |
1773 | else |
1774 | snprintf(dev->name, sizeof dev->name, | |
1775 | "UVC Camera (%04x:%04x)", | |
1776 | le16_to_cpu(udev->descriptor.idVendor), | |
1777 | le16_to_cpu(udev->descriptor.idProduct)); | |
1778 | ||
2c2d264b | 1779 | /* Parse the Video Class control descriptor. */ |
c0efd232 LP |
1780 | if (uvc_parse_control(dev) < 0) { |
1781 | uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " | |
1782 | "descriptors.\n"); | |
1783 | goto error; | |
1784 | } | |
1785 | ||
fba4578e | 1786 | uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", |
c0efd232 LP |
1787 | dev->uvc_version >> 8, dev->uvc_version & 0xff, |
1788 | udev->product ? udev->product : "<unnamed>", | |
1789 | le16_to_cpu(udev->descriptor.idVendor), | |
1790 | le16_to_cpu(udev->descriptor.idProduct)); | |
1791 | ||
73de3592 LP |
1792 | if (dev->quirks != id->driver_info) { |
1793 | uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " | |
1794 | "parameter for testing purpose.\n", dev->quirks); | |
c0efd232 LP |
1795 | uvc_printk(KERN_INFO, "Please report required quirks to the " |
1796 | "linux-uvc-devel mailing list.\n"); | |
1797 | } | |
1798 | ||
2c2d264b | 1799 | /* Initialize controls. */ |
c0efd232 LP |
1800 | if (uvc_ctrl_init_device(dev) < 0) |
1801 | goto error; | |
1802 | ||
8e113595 | 1803 | /* Scan the device for video chains. */ |
35f02a68 | 1804 | if (uvc_scan_device(dev) < 0) |
c0efd232 LP |
1805 | goto error; |
1806 | ||
8e113595 LP |
1807 | /* Register video devices. */ |
1808 | if (uvc_register_chains(dev) < 0) | |
1809 | goto error; | |
1810 | ||
2c2d264b | 1811 | /* Save our data pointer in the interface data. */ |
c0efd232 LP |
1812 | usb_set_intfdata(intf, dev); |
1813 | ||
2c2d264b | 1814 | /* Initialize the interrupt URB. */ |
c0efd232 LP |
1815 | if ((ret = uvc_status_init(dev)) < 0) { |
1816 | uvc_printk(KERN_INFO, "Unable to initialize the status " | |
1817 | "endpoint (%d), status interrupt will not be " | |
1818 | "supported.\n", ret); | |
1819 | } | |
1820 | ||
1821 | uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); | |
3dae8b41 | 1822 | usb_enable_autosuspend(udev); |
c0efd232 LP |
1823 | return 0; |
1824 | ||
1825 | error: | |
716fdee1 | 1826 | uvc_unregister_video(dev); |
c0efd232 LP |
1827 | return -ENODEV; |
1828 | } | |
1829 | ||
1830 | static void uvc_disconnect(struct usb_interface *intf) | |
1831 | { | |
1832 | struct uvc_device *dev = usb_get_intfdata(intf); | |
1833 | ||
1834 | /* Set the USB interface data to NULL. This can be done outside the | |
1835 | * lock, as there's no other reader. | |
1836 | */ | |
1837 | usb_set_intfdata(intf, NULL); | |
1838 | ||
b482d923 LP |
1839 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1840 | UVC_SC_VIDEOSTREAMING) | |
c0efd232 LP |
1841 | return; |
1842 | ||
c0efd232 | 1843 | dev->state |= UVC_DEV_DISCONNECTED; |
a9e28585 | 1844 | |
716fdee1 | 1845 | uvc_unregister_video(dev); |
c0efd232 LP |
1846 | } |
1847 | ||
1848 | static int uvc_suspend(struct usb_interface *intf, pm_message_t message) | |
1849 | { | |
1850 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1851 | struct uvc_streaming *stream; |
c0efd232 LP |
1852 | |
1853 | uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", | |
1854 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1855 | ||
1856 | /* Controls are cached on the fly so they don't need to be saved. */ | |
b482d923 LP |
1857 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1858 | UVC_SC_VIDEOCONTROL) | |
c0efd232 LP |
1859 | return uvc_status_suspend(dev); |
1860 | ||
35f02a68 LP |
1861 | list_for_each_entry(stream, &dev->streams, list) { |
1862 | if (stream->intf == intf) | |
1863 | return uvc_video_suspend(stream); | |
c0efd232 LP |
1864 | } |
1865 | ||
35f02a68 LP |
1866 | uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " |
1867 | "mismatch.\n"); | |
1868 | return -EINVAL; | |
c0efd232 LP |
1869 | } |
1870 | ||
9b0ae867 | 1871 | static int __uvc_resume(struct usb_interface *intf, int reset) |
c0efd232 LP |
1872 | { |
1873 | struct uvc_device *dev = usb_get_intfdata(intf); | |
35f02a68 | 1874 | struct uvc_streaming *stream; |
c0efd232 LP |
1875 | |
1876 | uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", | |
1877 | intf->cur_altsetting->desc.bInterfaceNumber); | |
1878 | ||
b482d923 LP |
1879 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
1880 | UVC_SC_VIDEOCONTROL) { | |
7564f67d HV |
1881 | if (reset) { |
1882 | int ret = uvc_ctrl_resume_device(dev); | |
1883 | ||
1884 | if (ret < 0) | |
1885 | return ret; | |
1886 | } | |
c0efd232 LP |
1887 | |
1888 | return uvc_status_resume(dev); | |
1889 | } | |
1890 | ||
35f02a68 LP |
1891 | list_for_each_entry(stream, &dev->streams, list) { |
1892 | if (stream->intf == intf) | |
1893 | return uvc_video_resume(stream); | |
c0efd232 LP |
1894 | } |
1895 | ||
35f02a68 LP |
1896 | uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " |
1897 | "mismatch.\n"); | |
1898 | return -EINVAL; | |
c0efd232 LP |
1899 | } |
1900 | ||
9b0ae867 LP |
1901 | static int uvc_resume(struct usb_interface *intf) |
1902 | { | |
1903 | return __uvc_resume(intf, 0); | |
1904 | } | |
1905 | ||
1906 | static int uvc_reset_resume(struct usb_interface *intf) | |
1907 | { | |
1908 | return __uvc_resume(intf, 1); | |
1909 | } | |
1910 | ||
310fe524 LP |
1911 | /* ------------------------------------------------------------------------ |
1912 | * Module parameters | |
1913 | */ | |
1914 | ||
1915 | static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) | |
1916 | { | |
1917 | if (uvc_clock_param == CLOCK_MONOTONIC) | |
1918 | return sprintf(buffer, "CLOCK_MONOTONIC"); | |
1919 | else | |
1920 | return sprintf(buffer, "CLOCK_REALTIME"); | |
1921 | } | |
1922 | ||
1923 | static int uvc_clock_param_set(const char *val, struct kernel_param *kp) | |
1924 | { | |
1925 | if (strncasecmp(val, "clock_", strlen("clock_")) == 0) | |
1926 | val += strlen("clock_"); | |
1927 | ||
1928 | if (strcasecmp(val, "monotonic") == 0) | |
1929 | uvc_clock_param = CLOCK_MONOTONIC; | |
1930 | else if (strcasecmp(val, "realtime") == 0) | |
1931 | uvc_clock_param = CLOCK_REALTIME; | |
1932 | else | |
1933 | return -EINVAL; | |
1934 | ||
1935 | return 0; | |
1936 | } | |
1937 | ||
1938 | module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, | |
1939 | &uvc_clock_param, S_IRUGO|S_IWUSR); | |
1940 | MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); | |
1941 | module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); | |
1942 | MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); | |
1943 | module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); | |
1944 | MODULE_PARM_DESC(quirks, "Forced device quirks"); | |
1945 | module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); | |
1946 | MODULE_PARM_DESC(trace, "Trace level bitmask"); | |
1947 | module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); | |
1948 | MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); | |
1949 | ||
c0efd232 LP |
1950 | /* ------------------------------------------------------------------------ |
1951 | * Driver initialization and cleanup | |
1952 | */ | |
1953 | ||
1954 | /* | |
1955 | * The Logitech cameras listed below have their interface class set to | |
1956 | * VENDOR_SPEC because they don't announce themselves as UVC devices, even | |
1957 | * though they are compliant. | |
1958 | */ | |
1959 | static struct usb_device_id uvc_ids[] = { | |
bce039c0 LP |
1960 | /* Genius eFace 2025 */ |
1961 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1962 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1963 | .idVendor = 0x0458, | |
1964 | .idProduct = 0x706e, | |
1965 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1966 | .bInterfaceSubClass = 1, | |
1967 | .bInterfaceProtocol = 0, | |
1968 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
1969 | /* Microsoft Lifecam NX-6000 */ |
1970 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1971 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1972 | .idVendor = 0x045e, | |
1973 | .idProduct = 0x00f8, | |
1974 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1975 | .bInterfaceSubClass = 1, | |
1976 | .bInterfaceProtocol = 0, | |
1977 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1978 | /* Microsoft Lifecam VX-7000 */ | |
1979 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1980 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1981 | .idVendor = 0x045e, | |
1982 | .idProduct = 0x0723, | |
1983 | .bInterfaceClass = USB_CLASS_VIDEO, | |
1984 | .bInterfaceSubClass = 1, | |
1985 | .bInterfaceProtocol = 0, | |
1986 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1987 | /* Logitech Quickcam Fusion */ | |
1988 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1989 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1990 | .idVendor = 0x046d, | |
1991 | .idProduct = 0x08c1, | |
1992 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
1993 | .bInterfaceSubClass = 1, | |
1994 | .bInterfaceProtocol = 0 }, | |
1995 | /* Logitech Quickcam Orbit MP */ | |
1996 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
1997 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
1998 | .idVendor = 0x046d, | |
1999 | .idProduct = 0x08c2, | |
2000 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2001 | .bInterfaceSubClass = 1, | |
2002 | .bInterfaceProtocol = 0 }, | |
2003 | /* Logitech Quickcam Pro for Notebook */ | |
2004 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2005 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2006 | .idVendor = 0x046d, | |
2007 | .idProduct = 0x08c3, | |
2008 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2009 | .bInterfaceSubClass = 1, | |
2010 | .bInterfaceProtocol = 0 }, | |
2011 | /* Logitech Quickcam Pro 5000 */ | |
2012 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2013 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2014 | .idVendor = 0x046d, | |
2015 | .idProduct = 0x08c5, | |
2016 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2017 | .bInterfaceSubClass = 1, | |
2018 | .bInterfaceProtocol = 0 }, | |
2019 | /* Logitech Quickcam OEM Dell Notebook */ | |
2020 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2021 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2022 | .idVendor = 0x046d, | |
2023 | .idProduct = 0x08c6, | |
2024 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2025 | .bInterfaceSubClass = 1, | |
2026 | .bInterfaceProtocol = 0 }, | |
2027 | /* Logitech Quickcam OEM Cisco VT Camera II */ | |
2028 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2029 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2030 | .idVendor = 0x046d, | |
2031 | .idProduct = 0x08c7, | |
2032 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, | |
2033 | .bInterfaceSubClass = 1, | |
2034 | .bInterfaceProtocol = 0 }, | |
86d8b6ab LP |
2035 | /* Chicony CNF7129 (Asus EEE 100HE) */ |
2036 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2037 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2038 | .idVendor = 0x04f2, | |
2039 | .idProduct = 0xb071, | |
2040 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2041 | .bInterfaceSubClass = 1, | |
2042 | .bInterfaceProtocol = 0, | |
2043 | .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE }, | |
f61d1d8a LP |
2044 | /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ |
2045 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2046 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2047 | .idVendor = 0x058f, | |
2048 | .idProduct = 0x3820, | |
2049 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2050 | .bInterfaceSubClass = 1, | |
2051 | .bInterfaceProtocol = 0, | |
2052 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 | 2053 | /* Apple Built-In iSight */ |
2c2d264b | 2054 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 LP |
2055 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2056 | .idVendor = 0x05ac, | |
2057 | .idProduct = 0x8501, | |
2c2d264b LP |
2058 | .bInterfaceClass = USB_CLASS_VIDEO, |
2059 | .bInterfaceSubClass = 1, | |
2060 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2061 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2062 | | UVC_QUIRK_BUILTIN_ISIGHT }, | |
2063 | /* Genesys Logic USB 2.0 PC Camera */ | |
2c2d264b | 2064 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
c0efd232 | 2065 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2c2d264b LP |
2066 | .idVendor = 0x05e3, |
2067 | .idProduct = 0x0505, | |
2068 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2069 | .bInterfaceSubClass = 1, | |
2070 | .bInterfaceProtocol = 0, | |
2071 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
d79cd839 LP |
2072 | /* ViMicro Vega */ |
2073 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2074 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2075 | .idVendor = 0x0ac8, | |
2076 | .idProduct = 0x332d, | |
2077 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2078 | .bInterfaceSubClass = 1, | |
2079 | .bInterfaceProtocol = 0, | |
2080 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2081 | /* ViMicro - Minoru3D */ | |
2082 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2083 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2084 | .idVendor = 0x0ac8, | |
2085 | .idProduct = 0x3410, | |
2086 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2087 | .bInterfaceSubClass = 1, | |
2088 | .bInterfaceProtocol = 0, | |
2089 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
2090 | /* ViMicro Venus - Minoru3D */ | |
2091 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
50144aee LP |
2092 | | USB_DEVICE_ID_MATCH_INT_INFO, |
2093 | .idVendor = 0x0ac8, | |
d79cd839 | 2094 | .idProduct = 0x3420, |
50144aee LP |
2095 | .bInterfaceClass = USB_CLASS_VIDEO, |
2096 | .bInterfaceSubClass = 1, | |
2097 | .bInterfaceProtocol = 0, | |
2098 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, | |
c0efd232 LP |
2099 | /* MT6227 */ |
2100 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2101 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2102 | .idVendor = 0x0e8d, | |
2103 | .idProduct = 0x0004, | |
2104 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2105 | .bInterfaceSubClass = 1, | |
2106 | .bInterfaceProtocol = 0, | |
bab6f66c LP |
2107 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2108 | | UVC_QUIRK_PROBE_DEF }, | |
9275b32b LP |
2109 | /* IMC Networks (Medion Akoya) */ |
2110 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2111 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2112 | .idVendor = 0x13d3, | |
2113 | .idProduct = 0x5103, | |
2114 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2115 | .bInterfaceSubClass = 1, | |
2116 | .bInterfaceProtocol = 0, | |
2117 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
c0efd232 LP |
2118 | /* Syntek (HP Spartan) */ |
2119 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2120 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2121 | .idVendor = 0x174f, | |
2122 | .idProduct = 0x5212, | |
2123 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2124 | .bInterfaceSubClass = 1, | |
2125 | .bInterfaceProtocol = 0, | |
25e69850 | 2126 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
562f0fed LP |
2127 | /* Syntek (Samsung Q310) */ |
2128 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2129 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2130 | .idVendor = 0x174f, | |
2131 | .idProduct = 0x5931, | |
2132 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2133 | .bInterfaceSubClass = 1, | |
2134 | .bInterfaceProtocol = 0, | |
2135 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f129b03b LP |
2136 | /* Syntek (Packard Bell EasyNote MX52 */ |
2137 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2138 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2139 | .idVendor = 0x174f, | |
2140 | .idProduct = 0x8a12, | |
2141 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2142 | .bInterfaceSubClass = 1, | |
2143 | .bInterfaceProtocol = 0, | |
2144 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
f61d1d8a | 2145 | /* Syntek (Asus F9SG) */ |
25e69850 LP |
2146 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2147 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2148 | .idVendor = 0x174f, | |
2149 | .idProduct = 0x8a31, | |
2150 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2151 | .bInterfaceSubClass = 1, | |
2152 | .bInterfaceProtocol = 0, | |
c0efd232 LP |
2153 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
2154 | /* Syntek (Asus U3S) */ | |
2155 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2156 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2157 | .idVendor = 0x174f, | |
2158 | .idProduct = 0x8a33, | |
2159 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2160 | .bInterfaceSubClass = 1, | |
2161 | .bInterfaceProtocol = 0, | |
2162 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
0ce566da LP |
2163 | /* Syntek (JAOtech Smart Terminal) */ |
2164 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2165 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2166 | .idVendor = 0x174f, | |
2167 | .idProduct = 0x8a34, | |
2168 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2169 | .bInterfaceSubClass = 1, | |
2170 | .bInterfaceProtocol = 0, | |
2171 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
70092c26 LP |
2172 | /* Miricle 307K */ |
2173 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2174 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2175 | .idVendor = 0x17dc, | |
2176 | .idProduct = 0x0202, | |
2177 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2178 | .bInterfaceSubClass = 1, | |
2179 | .bInterfaceProtocol = 0, | |
2180 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
849a3aba | 2181 | /* Lenovo Thinkpad SL400/SL500 */ |
2f38483b LP |
2182 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
2183 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2184 | .idVendor = 0x17ef, | |
2185 | .idProduct = 0x480b, | |
2186 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2187 | .bInterfaceSubClass = 1, | |
2188 | .bInterfaceProtocol = 0, | |
2189 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, | |
2d2bf2a3 LP |
2190 | /* Aveo Technology USB 2.0 Camera */ |
2191 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2192 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2193 | .idVendor = 0x1871, | |
2194 | .idProduct = 0x0306, | |
2195 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2196 | .bInterfaceSubClass = 1, | |
2197 | .bInterfaceProtocol = 0, | |
5bdf1377 LP |
2198 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
2199 | | UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
c0efd232 LP |
2200 | /* Ecamm Pico iMage */ |
2201 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2202 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2203 | .idVendor = 0x18cd, | |
2204 | .idProduct = 0xcafe, | |
2205 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2206 | .bInterfaceSubClass = 1, | |
2207 | .bInterfaceProtocol = 0, | |
2208 | .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, | |
2bb00fe6 LP |
2209 | /* Manta MM-353 Plako */ |
2210 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2211 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2212 | .idVendor = 0x18ec, | |
2213 | .idProduct = 0x3188, | |
2214 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2215 | .bInterfaceSubClass = 1, | |
2216 | .bInterfaceProtocol = 0, | |
2217 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
ca4a3456 LP |
2218 | /* FSC WebCam V30S */ |
2219 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2220 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2221 | .idVendor = 0x18ec, | |
2222 | .idProduct = 0x3288, | |
2223 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2224 | .bInterfaceSubClass = 1, | |
2225 | .bInterfaceProtocol = 0, | |
2226 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
1e4d05bc LP |
2227 | /* Arkmicro unbranded */ |
2228 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2229 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2230 | .idVendor = 0x18ec, | |
2231 | .idProduct = 0x3290, | |
2232 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2233 | .bInterfaceSubClass = 1, | |
2234 | .bInterfaceProtocol = 0, | |
2235 | .driver_info = UVC_QUIRK_PROBE_DEF }, | |
c0efd232 LP |
2236 | /* Bodelin ProScopeHR */ |
2237 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2238 | | USB_DEVICE_ID_MATCH_DEV_HI | |
2239 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2240 | .idVendor = 0x19ab, | |
2241 | .idProduct = 0x1000, | |
2242 | .bcdDevice_hi = 0x0126, | |
2243 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2244 | .bInterfaceSubClass = 1, | |
2245 | .bInterfaceProtocol = 0, | |
2246 | .driver_info = UVC_QUIRK_STATUS_INTERVAL }, | |
3bc766ad LP |
2247 | /* MSI StarCam 370i */ |
2248 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2249 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2250 | .idVendor = 0x1b3b, | |
2251 | .idProduct = 0x2951, | |
2252 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2253 | .bInterfaceSubClass = 1, | |
2254 | .bInterfaceProtocol = 0, | |
2255 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, | |
c0efd232 LP |
2256 | /* SiGma Micro USB Web Camera */ |
2257 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | |
2258 | | USB_DEVICE_ID_MATCH_INT_INFO, | |
2259 | .idVendor = 0x1c4f, | |
2260 | .idProduct = 0x3000, | |
2261 | .bInterfaceClass = USB_CLASS_VIDEO, | |
2262 | .bInterfaceSubClass = 1, | |
2263 | .bInterfaceProtocol = 0, | |
2264 | .driver_info = UVC_QUIRK_PROBE_MINMAX | |
d732c44c | 2265 | | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, |
c0efd232 LP |
2266 | /* Generic USB Video Class */ |
2267 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) }, | |
2268 | {} | |
2269 | }; | |
2270 | ||
2271 | MODULE_DEVICE_TABLE(usb, uvc_ids); | |
2272 | ||
2273 | struct uvc_driver uvc_driver = { | |
2274 | .driver = { | |
2275 | .name = "uvcvideo", | |
2276 | .probe = uvc_probe, | |
2277 | .disconnect = uvc_disconnect, | |
2278 | .suspend = uvc_suspend, | |
2279 | .resume = uvc_resume, | |
9b0ae867 | 2280 | .reset_resume = uvc_reset_resume, |
c0efd232 LP |
2281 | .id_table = uvc_ids, |
2282 | .supports_autosuspend = 1, | |
2283 | }, | |
2284 | }; | |
2285 | ||
2286 | static int __init uvc_init(void) | |
2287 | { | |
2288 | int result; | |
2289 | ||
c0efd232 LP |
2290 | result = usb_register(&uvc_driver.driver); |
2291 | if (result == 0) | |
2292 | printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); | |
2293 | return result; | |
2294 | } | |
2295 | ||
2296 | static void __exit uvc_cleanup(void) | |
2297 | { | |
2298 | usb_deregister(&uvc_driver.driver); | |
2299 | } | |
2300 | ||
2301 | module_init(uvc_init); | |
2302 | module_exit(uvc_cleanup); | |
2303 | ||
c0efd232 LP |
2304 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2305 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2306 | MODULE_LICENSE("GPL"); | |
2307 | MODULE_VERSION(DRIVER_VERSION); | |
f87086e3 | 2308 |