Commit | Line | Data |
---|---|---|
c0efd232 LP |
1 | /* |
2 | * uvc_v4l2.c -- USB Video Class driver - V4L2 API | |
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 | #include <linux/kernel.h> | |
15 | #include <linux/version.h> | |
16 | #include <linux/list.h> | |
17 | #include <linux/module.h> | |
5a0e3ad6 | 18 | #include <linux/slab.h> |
c0efd232 LP |
19 | #include <linux/usb.h> |
20 | #include <linux/videodev2.h> | |
21 | #include <linux/vmalloc.h> | |
22 | #include <linux/mm.h> | |
23 | #include <linux/wait.h> | |
60063497 | 24 | #include <linux/atomic.h> |
c0efd232 LP |
25 | |
26 | #include <media/v4l2-common.h> | |
35ea11ff | 27 | #include <media/v4l2-ioctl.h> |
c0efd232 LP |
28 | |
29 | #include "uvcvideo.h" | |
30 | ||
561474c2 LP |
31 | /* ------------------------------------------------------------------------ |
32 | * UVC ioctls | |
33 | */ | |
ba2fa996 | 34 | static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain, |
227bd5b3 | 35 | struct uvc_xu_control_mapping *xmap) |
561474c2 LP |
36 | { |
37 | struct uvc_control_mapping *map; | |
38 | unsigned int size; | |
39 | int ret; | |
40 | ||
41 | map = kzalloc(sizeof *map, GFP_KERNEL); | |
42 | if (map == NULL) | |
43 | return -ENOMEM; | |
44 | ||
45 | map->id = xmap->id; | |
46 | memcpy(map->name, xmap->name, sizeof map->name); | |
47 | memcpy(map->entity, xmap->entity, sizeof map->entity); | |
48 | map->selector = xmap->selector; | |
49 | map->size = xmap->size; | |
50 | map->offset = xmap->offset; | |
51 | map->v4l2_type = xmap->v4l2_type; | |
52 | map->data_type = xmap->data_type; | |
53 | ||
54 | switch (xmap->v4l2_type) { | |
55 | case V4L2_CTRL_TYPE_INTEGER: | |
56 | case V4L2_CTRL_TYPE_BOOLEAN: | |
57 | case V4L2_CTRL_TYPE_BUTTON: | |
58 | break; | |
59 | ||
60 | case V4L2_CTRL_TYPE_MENU: | |
806e23e9 HC |
61 | /* Prevent excessive memory consumption, as well as integer |
62 | * overflows. | |
63 | */ | |
64 | if (xmap->menu_count == 0 || | |
65 | xmap->menu_count > UVC_MAX_CONTROL_MENU_ENTRIES) { | |
66 | ret = -EINVAL; | |
67 | goto done; | |
68 | } | |
69 | ||
561474c2 LP |
70 | size = xmap->menu_count * sizeof(*map->menu_info); |
71 | map->menu_info = kmalloc(size, GFP_KERNEL); | |
72 | if (map->menu_info == NULL) { | |
73 | ret = -ENOMEM; | |
74 | goto done; | |
75 | } | |
76 | ||
77 | if (copy_from_user(map->menu_info, xmap->menu_info, size)) { | |
78 | ret = -EFAULT; | |
79 | goto done; | |
80 | } | |
81 | ||
82 | map->menu_count = xmap->menu_count; | |
83 | break; | |
84 | ||
85 | default: | |
ba2fa996 LP |
86 | uvc_trace(UVC_TRACE_CONTROL, "Unsupported V4L2 control type " |
87 | "%u.\n", xmap->v4l2_type); | |
7a286cc1 | 88 | ret = -ENOTTY; |
561474c2 LP |
89 | goto done; |
90 | } | |
91 | ||
ba2fa996 | 92 | ret = uvc_ctrl_add_mapping(chain, map); |
561474c2 LP |
93 | |
94 | done: | |
ba2fa996 LP |
95 | kfree(map->menu_info); |
96 | kfree(map); | |
561474c2 LP |
97 | |
98 | return ret; | |
99 | } | |
100 | ||
c0efd232 LP |
101 | /* ------------------------------------------------------------------------ |
102 | * V4L2 interface | |
103 | */ | |
104 | ||
c0efd232 LP |
105 | /* |
106 | * Find the frame interval closest to the requested frame interval for the | |
107 | * given frame format and size. This should be done by the device as part of | |
108 | * the Video Probe and Commit negotiation, but some hardware don't implement | |
109 | * that feature. | |
110 | */ | |
111 | static __u32 uvc_try_frame_interval(struct uvc_frame *frame, __u32 interval) | |
112 | { | |
113 | unsigned int i; | |
114 | ||
115 | if (frame->bFrameIntervalType) { | |
116 | __u32 best = -1, dist; | |
117 | ||
118 | for (i = 0; i < frame->bFrameIntervalType; ++i) { | |
119 | dist = interval > frame->dwFrameInterval[i] | |
120 | ? interval - frame->dwFrameInterval[i] | |
121 | : frame->dwFrameInterval[i] - interval; | |
122 | ||
123 | if (dist > best) | |
124 | break; | |
125 | ||
126 | best = dist; | |
127 | } | |
128 | ||
129 | interval = frame->dwFrameInterval[i-1]; | |
130 | } else { | |
131 | const __u32 min = frame->dwFrameInterval[0]; | |
132 | const __u32 max = frame->dwFrameInterval[1]; | |
133 | const __u32 step = frame->dwFrameInterval[2]; | |
134 | ||
135 | interval = min + (interval - min + step/2) / step * step; | |
136 | if (interval > max) | |
137 | interval = max; | |
138 | } | |
139 | ||
140 | return interval; | |
141 | } | |
142 | ||
35f02a68 | 143 | static int uvc_v4l2_try_format(struct uvc_streaming *stream, |
c0efd232 LP |
144 | struct v4l2_format *fmt, struct uvc_streaming_control *probe, |
145 | struct uvc_format **uvc_format, struct uvc_frame **uvc_frame) | |
146 | { | |
147 | struct uvc_format *format = NULL; | |
148 | struct uvc_frame *frame = NULL; | |
149 | __u16 rw, rh; | |
150 | unsigned int d, maxd; | |
151 | unsigned int i; | |
152 | __u32 interval; | |
153 | int ret = 0; | |
154 | __u8 *fcc; | |
155 | ||
35f02a68 | 156 | if (fmt->type != stream->type) |
c0efd232 LP |
157 | return -EINVAL; |
158 | ||
159 | fcc = (__u8 *)&fmt->fmt.pix.pixelformat; | |
160 | uvc_trace(UVC_TRACE_FORMAT, "Trying format 0x%08x (%c%c%c%c): %ux%u.\n", | |
161 | fmt->fmt.pix.pixelformat, | |
162 | fcc[0], fcc[1], fcc[2], fcc[3], | |
163 | fmt->fmt.pix.width, fmt->fmt.pix.height); | |
164 | ||
165 | /* Check if the hardware supports the requested format. */ | |
35f02a68 LP |
166 | for (i = 0; i < stream->nformats; ++i) { |
167 | format = &stream->format[i]; | |
c0efd232 LP |
168 | if (format->fcc == fmt->fmt.pix.pixelformat) |
169 | break; | |
170 | } | |
171 | ||
172 | if (format == NULL || format->fcc != fmt->fmt.pix.pixelformat) { | |
173 | uvc_trace(UVC_TRACE_FORMAT, "Unsupported format 0x%08x.\n", | |
174 | fmt->fmt.pix.pixelformat); | |
175 | return -EINVAL; | |
176 | } | |
177 | ||
178 | /* Find the closest image size. The distance between image sizes is | |
179 | * the size in pixels of the non-overlapping regions between the | |
180 | * requested size and the frame-specified size. | |
181 | */ | |
182 | rw = fmt->fmt.pix.width; | |
183 | rh = fmt->fmt.pix.height; | |
184 | maxd = (unsigned int)-1; | |
185 | ||
186 | for (i = 0; i < format->nframes; ++i) { | |
187 | __u16 w = format->frame[i].wWidth; | |
188 | __u16 h = format->frame[i].wHeight; | |
189 | ||
190 | d = min(w, rw) * min(h, rh); | |
191 | d = w*h + rw*rh - 2*d; | |
192 | if (d < maxd) { | |
193 | maxd = d; | |
194 | frame = &format->frame[i]; | |
195 | } | |
196 | ||
197 | if (maxd == 0) | |
198 | break; | |
199 | } | |
200 | ||
201 | if (frame == NULL) { | |
202 | uvc_trace(UVC_TRACE_FORMAT, "Unsupported size %ux%u.\n", | |
203 | fmt->fmt.pix.width, fmt->fmt.pix.height); | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
207 | /* Use the default frame interval. */ | |
208 | interval = frame->dwDefaultFrameInterval; | |
209 | uvc_trace(UVC_TRACE_FORMAT, "Using default frame interval %u.%u us " | |
210 | "(%u.%u fps).\n", interval/10, interval%10, 10000000/interval, | |
211 | (100000000/interval)%10); | |
212 | ||
213 | /* Set the format index, frame index and frame interval. */ | |
214 | memset(probe, 0, sizeof *probe); | |
215 | probe->bmHint = 1; /* dwFrameInterval */ | |
216 | probe->bFormatIndex = format->index; | |
217 | probe->bFrameIndex = frame->bFrameIndex; | |
218 | probe->dwFrameInterval = uvc_try_frame_interval(frame, interval); | |
219 | /* Some webcams stall the probe control set request when the | |
220 | * dwMaxVideoFrameSize field is set to zero. The UVC specification | |
221 | * clearly states that the field is read-only from the host, so this | |
222 | * is a webcam bug. Set dwMaxVideoFrameSize to the value reported by | |
223 | * the webcam to work around the problem. | |
224 | * | |
225 | * The workaround could probably be enabled for all webcams, so the | |
226 | * quirk can be removed if needed. It's currently useful to detect | |
227 | * webcam bugs and fix them before they hit the market (providing | |
228 | * developers test their webcams with the Linux driver as well as with | |
229 | * the Windows driver). | |
230 | */ | |
6947756d | 231 | mutex_lock(&stream->mutex); |
35f02a68 | 232 | if (stream->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS) |
c0efd232 | 233 | probe->dwMaxVideoFrameSize = |
35f02a68 | 234 | stream->ctrl.dwMaxVideoFrameSize; |
c0efd232 | 235 | |
2c2d264b | 236 | /* Probe the device. */ |
35f02a68 | 237 | ret = uvc_probe_video(stream, probe); |
6947756d | 238 | mutex_unlock(&stream->mutex); |
35f02a68 | 239 | if (ret < 0) |
c0efd232 LP |
240 | goto done; |
241 | ||
242 | fmt->fmt.pix.width = frame->wWidth; | |
243 | fmt->fmt.pix.height = frame->wHeight; | |
244 | fmt->fmt.pix.field = V4L2_FIELD_NONE; | |
245 | fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8; | |
246 | fmt->fmt.pix.sizeimage = probe->dwMaxVideoFrameSize; | |
247 | fmt->fmt.pix.colorspace = format->colorspace; | |
248 | fmt->fmt.pix.priv = 0; | |
249 | ||
250 | if (uvc_format != NULL) | |
251 | *uvc_format = format; | |
252 | if (uvc_frame != NULL) | |
253 | *uvc_frame = frame; | |
254 | ||
255 | done: | |
256 | return ret; | |
257 | } | |
258 | ||
35f02a68 | 259 | static int uvc_v4l2_get_format(struct uvc_streaming *stream, |
c0efd232 LP |
260 | struct v4l2_format *fmt) |
261 | { | |
6947756d LP |
262 | struct uvc_format *format; |
263 | struct uvc_frame *frame; | |
264 | int ret = 0; | |
c0efd232 | 265 | |
35f02a68 | 266 | if (fmt->type != stream->type) |
c0efd232 LP |
267 | return -EINVAL; |
268 | ||
6947756d LP |
269 | mutex_lock(&stream->mutex); |
270 | format = stream->cur_format; | |
271 | frame = stream->cur_frame; | |
272 | ||
273 | if (format == NULL || frame == NULL) { | |
274 | ret = -EINVAL; | |
275 | goto done; | |
276 | } | |
c0efd232 LP |
277 | |
278 | fmt->fmt.pix.pixelformat = format->fcc; | |
279 | fmt->fmt.pix.width = frame->wWidth; | |
280 | fmt->fmt.pix.height = frame->wHeight; | |
281 | fmt->fmt.pix.field = V4L2_FIELD_NONE; | |
282 | fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8; | |
35f02a68 | 283 | fmt->fmt.pix.sizeimage = stream->ctrl.dwMaxVideoFrameSize; |
c0efd232 LP |
284 | fmt->fmt.pix.colorspace = format->colorspace; |
285 | fmt->fmt.pix.priv = 0; | |
286 | ||
6947756d LP |
287 | done: |
288 | mutex_unlock(&stream->mutex); | |
289 | return ret; | |
c0efd232 LP |
290 | } |
291 | ||
35f02a68 | 292 | static int uvc_v4l2_set_format(struct uvc_streaming *stream, |
c0efd232 LP |
293 | struct v4l2_format *fmt) |
294 | { | |
295 | struct uvc_streaming_control probe; | |
296 | struct uvc_format *format; | |
297 | struct uvc_frame *frame; | |
298 | int ret; | |
299 | ||
35f02a68 | 300 | if (fmt->type != stream->type) |
c0efd232 LP |
301 | return -EINVAL; |
302 | ||
35f02a68 | 303 | ret = uvc_v4l2_try_format(stream, fmt, &probe, &format, &frame); |
c0efd232 LP |
304 | if (ret < 0) |
305 | return ret; | |
306 | ||
6947756d LP |
307 | mutex_lock(&stream->mutex); |
308 | ||
309 | if (uvc_queue_allocated(&stream->queue)) { | |
310 | ret = -EBUSY; | |
311 | goto done; | |
312 | } | |
313 | ||
35f02a68 LP |
314 | memcpy(&stream->ctrl, &probe, sizeof probe); |
315 | stream->cur_format = format; | |
316 | stream->cur_frame = frame; | |
c0efd232 | 317 | |
6947756d LP |
318 | done: |
319 | mutex_unlock(&stream->mutex); | |
320 | return ret; | |
c0efd232 LP |
321 | } |
322 | ||
35f02a68 | 323 | static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream, |
c0efd232 LP |
324 | struct v4l2_streamparm *parm) |
325 | { | |
326 | uint32_t numerator, denominator; | |
327 | ||
35f02a68 | 328 | if (parm->type != stream->type) |
c0efd232 LP |
329 | return -EINVAL; |
330 | ||
6947756d | 331 | mutex_lock(&stream->mutex); |
35f02a68 | 332 | numerator = stream->ctrl.dwFrameInterval; |
6947756d LP |
333 | mutex_unlock(&stream->mutex); |
334 | ||
c0efd232 LP |
335 | denominator = 10000000; |
336 | uvc_simplify_fraction(&numerator, &denominator, 8, 333); | |
337 | ||
338 | memset(parm, 0, sizeof *parm); | |
35f02a68 | 339 | parm->type = stream->type; |
ff924203 | 340 | |
35f02a68 | 341 | if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
ff924203 LP |
342 | parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; |
343 | parm->parm.capture.capturemode = 0; | |
344 | parm->parm.capture.timeperframe.numerator = numerator; | |
345 | parm->parm.capture.timeperframe.denominator = denominator; | |
346 | parm->parm.capture.extendedmode = 0; | |
347 | parm->parm.capture.readbuffers = 0; | |
348 | } else { | |
349 | parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME; | |
350 | parm->parm.output.outputmode = 0; | |
351 | parm->parm.output.timeperframe.numerator = numerator; | |
352 | parm->parm.output.timeperframe.denominator = denominator; | |
353 | } | |
c0efd232 LP |
354 | |
355 | return 0; | |
356 | } | |
357 | ||
35f02a68 | 358 | static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream, |
c0efd232 LP |
359 | struct v4l2_streamparm *parm) |
360 | { | |
c0efd232 | 361 | struct uvc_streaming_control probe; |
ff924203 | 362 | struct v4l2_fract timeperframe; |
c0efd232 LP |
363 | uint32_t interval; |
364 | int ret; | |
365 | ||
35f02a68 | 366 | if (parm->type != stream->type) |
c0efd232 LP |
367 | return -EINVAL; |
368 | ||
ff924203 LP |
369 | if (parm->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
370 | timeperframe = parm->parm.capture.timeperframe; | |
371 | else | |
372 | timeperframe = parm->parm.output.timeperframe; | |
373 | ||
ff924203 LP |
374 | interval = uvc_fraction_to_interval(timeperframe.numerator, |
375 | timeperframe.denominator); | |
c0efd232 | 376 | uvc_trace(UVC_TRACE_FORMAT, "Setting frame interval to %u/%u (%u).\n", |
ff924203 | 377 | timeperframe.numerator, timeperframe.denominator, interval); |
6947756d LP |
378 | |
379 | mutex_lock(&stream->mutex); | |
380 | ||
381 | if (uvc_queue_streaming(&stream->queue)) { | |
382 | mutex_unlock(&stream->mutex); | |
383 | return -EBUSY; | |
384 | } | |
385 | ||
386 | memcpy(&probe, &stream->ctrl, sizeof probe); | |
387 | probe.dwFrameInterval = | |
388 | uvc_try_frame_interval(stream->cur_frame, interval); | |
c0efd232 LP |
389 | |
390 | /* Probe the device with the new settings. */ | |
35f02a68 | 391 | ret = uvc_probe_video(stream, &probe); |
6947756d LP |
392 | if (ret < 0) { |
393 | mutex_unlock(&stream->mutex); | |
c0efd232 | 394 | return ret; |
6947756d | 395 | } |
c0efd232 | 396 | |
35f02a68 | 397 | memcpy(&stream->ctrl, &probe, sizeof probe); |
6947756d | 398 | mutex_unlock(&stream->mutex); |
c0efd232 LP |
399 | |
400 | /* Return the actual frame period. */ | |
ff924203 LP |
401 | timeperframe.numerator = probe.dwFrameInterval; |
402 | timeperframe.denominator = 10000000; | |
403 | uvc_simplify_fraction(&timeperframe.numerator, | |
404 | &timeperframe.denominator, 8, 333); | |
405 | ||
406 | if (parm->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
407 | parm->parm.capture.timeperframe = timeperframe; | |
408 | else | |
409 | parm->parm.output.timeperframe = timeperframe; | |
c0efd232 LP |
410 | |
411 | return 0; | |
412 | } | |
413 | ||
414 | /* ------------------------------------------------------------------------ | |
415 | * Privilege management | |
416 | */ | |
417 | ||
418 | /* | |
419 | * Privilege management is the multiple-open implementation basis. The current | |
420 | * implementation is completely transparent for the end-user and doesn't | |
421 | * require explicit use of the VIDIOC_G_PRIORITY and VIDIOC_S_PRIORITY ioctls. | |
422 | * Those ioctls enable finer control on the device (by making possible for a | |
423 | * user to request exclusive access to a device), but are not mature yet. | |
424 | * Switching to the V4L2 priority mechanism might be considered in the future | |
425 | * if this situation changes. | |
426 | * | |
427 | * Each open instance of a UVC device can either be in a privileged or | |
428 | * unprivileged state. Only a single instance can be in a privileged state at | |
2c2d264b | 429 | * a given time. Trying to perform an operation that requires privileges will |
c0efd232 | 430 | * automatically acquire the required privileges if possible, or return -EBUSY |
1a969d98 LP |
431 | * otherwise. Privileges are dismissed when closing the instance or when |
432 | * freeing the video buffers using VIDIOC_REQBUFS. | |
c0efd232 | 433 | * |
2c2d264b | 434 | * Operations that require privileges are: |
c0efd232 LP |
435 | * |
436 | * - VIDIOC_S_INPUT | |
437 | * - VIDIOC_S_PARM | |
438 | * - VIDIOC_S_FMT | |
c0efd232 LP |
439 | * - VIDIOC_REQBUFS |
440 | */ | |
441 | static int uvc_acquire_privileges(struct uvc_fh *handle) | |
442 | { | |
c0efd232 LP |
443 | /* Always succeed if the handle is already privileged. */ |
444 | if (handle->state == UVC_HANDLE_ACTIVE) | |
445 | return 0; | |
446 | ||
447 | /* Check if the device already has a privileged handle. */ | |
35f02a68 LP |
448 | if (atomic_inc_return(&handle->stream->active) != 1) { |
449 | atomic_dec(&handle->stream->active); | |
716fdee1 | 450 | return -EBUSY; |
c0efd232 LP |
451 | } |
452 | ||
453 | handle->state = UVC_HANDLE_ACTIVE; | |
716fdee1 | 454 | return 0; |
c0efd232 LP |
455 | } |
456 | ||
457 | static void uvc_dismiss_privileges(struct uvc_fh *handle) | |
458 | { | |
459 | if (handle->state == UVC_HANDLE_ACTIVE) | |
35f02a68 | 460 | atomic_dec(&handle->stream->active); |
c0efd232 LP |
461 | |
462 | handle->state = UVC_HANDLE_PASSIVE; | |
463 | } | |
464 | ||
465 | static int uvc_has_privileges(struct uvc_fh *handle) | |
466 | { | |
467 | return handle->state == UVC_HANDLE_ACTIVE; | |
468 | } | |
469 | ||
470 | /* ------------------------------------------------------------------------ | |
471 | * V4L2 file operations | |
472 | */ | |
473 | ||
bec43661 | 474 | static int uvc_v4l2_open(struct file *file) |
c0efd232 | 475 | { |
35f02a68 | 476 | struct uvc_streaming *stream; |
c0efd232 LP |
477 | struct uvc_fh *handle; |
478 | int ret = 0; | |
479 | ||
480 | uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n"); | |
35f02a68 | 481 | stream = video_drvdata(file); |
c0efd232 | 482 | |
716fdee1 LP |
483 | if (stream->dev->state & UVC_DEV_DISCONNECTED) |
484 | return -ENODEV; | |
c0efd232 | 485 | |
35f02a68 | 486 | ret = usb_autopm_get_interface(stream->dev->intf); |
c0efd232 | 487 | if (ret < 0) |
716fdee1 | 488 | return ret; |
c0efd232 LP |
489 | |
490 | /* Create the device handle. */ | |
491 | handle = kzalloc(sizeof *handle, GFP_KERNEL); | |
492 | if (handle == NULL) { | |
35f02a68 | 493 | usb_autopm_put_interface(stream->dev->intf); |
716fdee1 | 494 | return -ENOMEM; |
c0efd232 LP |
495 | } |
496 | ||
35f02a68 LP |
497 | if (atomic_inc_return(&stream->dev->users) == 1) { |
498 | ret = uvc_status_start(stream->dev); | |
499 | if (ret < 0) { | |
500 | usb_autopm_put_interface(stream->dev->intf); | |
501 | atomic_dec(&stream->dev->users); | |
04a37e0f | 502 | kfree(handle); |
716fdee1 | 503 | return ret; |
04a37e0f LP |
504 | } |
505 | } | |
506 | ||
8e113595 | 507 | handle->chain = stream->chain; |
35f02a68 | 508 | handle->stream = stream; |
c0efd232 LP |
509 | handle->state = UVC_HANDLE_PASSIVE; |
510 | file->private_data = handle; | |
511 | ||
716fdee1 | 512 | return 0; |
c0efd232 LP |
513 | } |
514 | ||
bec43661 | 515 | static int uvc_v4l2_release(struct file *file) |
c0efd232 | 516 | { |
abf84383 | 517 | struct uvc_fh *handle = file->private_data; |
35f02a68 | 518 | struct uvc_streaming *stream = handle->stream; |
c0efd232 LP |
519 | |
520 | uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n"); | |
521 | ||
522 | /* Only free resources if this is a privileged handle. */ | |
523 | if (uvc_has_privileges(handle)) { | |
35f02a68 | 524 | uvc_video_enable(stream, 0); |
6998b6fb | 525 | uvc_free_buffers(&stream->queue); |
c0efd232 LP |
526 | } |
527 | ||
528 | /* Release the file handle. */ | |
529 | uvc_dismiss_privileges(handle); | |
530 | kfree(handle); | |
531 | file->private_data = NULL; | |
532 | ||
35f02a68 LP |
533 | if (atomic_dec_return(&stream->dev->users) == 0) |
534 | uvc_status_stop(stream->dev); | |
04a37e0f | 535 | |
35f02a68 | 536 | usb_autopm_put_interface(stream->dev->intf); |
c0efd232 LP |
537 | return 0; |
538 | } | |
539 | ||
069b7479 | 540 | static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) |
c0efd232 LP |
541 | { |
542 | struct video_device *vdev = video_devdata(file); | |
abf84383 | 543 | struct uvc_fh *handle = file->private_data; |
8e113595 | 544 | struct uvc_video_chain *chain = handle->chain; |
35f02a68 | 545 | struct uvc_streaming *stream = handle->stream; |
069b7479 | 546 | long ret = 0; |
c0efd232 | 547 | |
c0efd232 LP |
548 | switch (cmd) { |
549 | /* Query capabilities */ | |
550 | case VIDIOC_QUERYCAP: | |
551 | { | |
552 | struct v4l2_capability *cap = arg; | |
553 | ||
554 | memset(cap, 0, sizeof *cap); | |
d0ebf307 LP |
555 | strlcpy(cap->driver, "uvcvideo", sizeof cap->driver); |
556 | strlcpy(cap->card, vdev->name, sizeof cap->card); | |
35f02a68 | 557 | usb_make_path(stream->dev->udev, |
b12049a2 | 558 | cap->bus_info, sizeof(cap->bus_info)); |
fd3e5824 | 559 | cap->version = LINUX_VERSION_CODE; |
35f02a68 | 560 | if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
ff924203 LP |
561 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
562 | | V4L2_CAP_STREAMING; | |
563 | else | |
564 | cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | |
565 | | V4L2_CAP_STREAMING; | |
c0efd232 LP |
566 | break; |
567 | } | |
568 | ||
569 | /* Get, Set & Query control */ | |
570 | case VIDIOC_QUERYCTRL: | |
8e113595 | 571 | return uvc_query_v4l2_ctrl(chain, arg); |
c0efd232 LP |
572 | |
573 | case VIDIOC_G_CTRL: | |
574 | { | |
575 | struct v4l2_control *ctrl = arg; | |
576 | struct v4l2_ext_control xctrl; | |
577 | ||
578 | memset(&xctrl, 0, sizeof xctrl); | |
579 | xctrl.id = ctrl->id; | |
580 | ||
8e113595 LP |
581 | ret = uvc_ctrl_begin(chain); |
582 | if (ret < 0) | |
1fcbcc47 RK |
583 | return ret; |
584 | ||
8e113595 LP |
585 | ret = uvc_ctrl_get(chain, &xctrl); |
586 | uvc_ctrl_rollback(chain); | |
c0efd232 LP |
587 | if (ret >= 0) |
588 | ctrl->value = xctrl.value; | |
589 | break; | |
590 | } | |
591 | ||
592 | case VIDIOC_S_CTRL: | |
593 | { | |
594 | struct v4l2_control *ctrl = arg; | |
595 | struct v4l2_ext_control xctrl; | |
596 | ||
597 | memset(&xctrl, 0, sizeof xctrl); | |
598 | xctrl.id = ctrl->id; | |
599 | xctrl.value = ctrl->value; | |
600 | ||
8d556625 | 601 | ret = uvc_ctrl_begin(chain); |
8e113595 | 602 | if (ret < 0) |
1fcbcc47 RK |
603 | return ret; |
604 | ||
8e113595 | 605 | ret = uvc_ctrl_set(chain, &xctrl); |
c0efd232 | 606 | if (ret < 0) { |
8e113595 | 607 | uvc_ctrl_rollback(chain); |
c0efd232 LP |
608 | return ret; |
609 | } | |
8e113595 | 610 | ret = uvc_ctrl_commit(chain); |
e54532e5 LP |
611 | if (ret == 0) |
612 | ctrl->value = xctrl.value; | |
c0efd232 LP |
613 | break; |
614 | } | |
615 | ||
616 | case VIDIOC_QUERYMENU: | |
23d9f3ef | 617 | return uvc_query_v4l2_menu(chain, arg); |
c0efd232 LP |
618 | |
619 | case VIDIOC_G_EXT_CTRLS: | |
620 | { | |
621 | struct v4l2_ext_controls *ctrls = arg; | |
622 | struct v4l2_ext_control *ctrl = ctrls->controls; | |
623 | unsigned int i; | |
624 | ||
8e113595 LP |
625 | ret = uvc_ctrl_begin(chain); |
626 | if (ret < 0) | |
1fcbcc47 RK |
627 | return ret; |
628 | ||
c0efd232 | 629 | for (i = 0; i < ctrls->count; ++ctrl, ++i) { |
8e113595 | 630 | ret = uvc_ctrl_get(chain, ctrl); |
c0efd232 | 631 | if (ret < 0) { |
8e113595 | 632 | uvc_ctrl_rollback(chain); |
c0efd232 LP |
633 | ctrls->error_idx = i; |
634 | return ret; | |
635 | } | |
636 | } | |
637 | ctrls->error_idx = 0; | |
8e113595 | 638 | ret = uvc_ctrl_rollback(chain); |
c0efd232 LP |
639 | break; |
640 | } | |
641 | ||
642 | case VIDIOC_S_EXT_CTRLS: | |
643 | case VIDIOC_TRY_EXT_CTRLS: | |
644 | { | |
645 | struct v4l2_ext_controls *ctrls = arg; | |
646 | struct v4l2_ext_control *ctrl = ctrls->controls; | |
647 | unsigned int i; | |
648 | ||
8e113595 | 649 | ret = uvc_ctrl_begin(chain); |
c0efd232 LP |
650 | if (ret < 0) |
651 | return ret; | |
652 | ||
653 | for (i = 0; i < ctrls->count; ++ctrl, ++i) { | |
8e113595 | 654 | ret = uvc_ctrl_set(chain, ctrl); |
c0efd232 | 655 | if (ret < 0) { |
8e113595 | 656 | uvc_ctrl_rollback(chain); |
c0efd232 LP |
657 | ctrls->error_idx = i; |
658 | return ret; | |
659 | } | |
660 | } | |
661 | ||
662 | ctrls->error_idx = 0; | |
663 | ||
664 | if (cmd == VIDIOC_S_EXT_CTRLS) | |
8e113595 | 665 | ret = uvc_ctrl_commit(chain); |
c0efd232 | 666 | else |
8e113595 | 667 | ret = uvc_ctrl_rollback(chain); |
c0efd232 LP |
668 | break; |
669 | } | |
670 | ||
671 | /* Get, Set & Enum input */ | |
672 | case VIDIOC_ENUMINPUT: | |
673 | { | |
8e113595 | 674 | const struct uvc_entity *selector = chain->selector; |
c0efd232 LP |
675 | struct v4l2_input *input = arg; |
676 | struct uvc_entity *iterm = NULL; | |
677 | u32 index = input->index; | |
678 | int pin = 0; | |
679 | ||
680 | if (selector == NULL || | |
8e113595 | 681 | (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) { |
c0efd232 LP |
682 | if (index != 0) |
683 | return -EINVAL; | |
6241d8ca LP |
684 | list_for_each_entry(iterm, &chain->entities, chain) { |
685 | if (UVC_ENTITY_IS_ITERM(iterm)) | |
686 | break; | |
687 | } | |
c0efd232 | 688 | pin = iterm->id; |
8ca5a639 LP |
689 | } else if (pin < selector->bNrInPins) { |
690 | pin = selector->baSourceID[index]; | |
6241d8ca LP |
691 | list_for_each_entry(iterm, &chain->entities, chain) { |
692 | if (!UVC_ENTITY_IS_ITERM(iterm)) | |
693 | continue; | |
c0efd232 LP |
694 | if (iterm->id == pin) |
695 | break; | |
696 | } | |
697 | } | |
698 | ||
699 | if (iterm == NULL || iterm->id != pin) | |
700 | return -EINVAL; | |
701 | ||
702 | memset(input, 0, sizeof *input); | |
703 | input->index = index; | |
d0ebf307 | 704 | strlcpy(input->name, iterm->name, sizeof input->name); |
b482d923 | 705 | if (UVC_ENTITY_TYPE(iterm) == UVC_ITT_CAMERA) |
c0efd232 LP |
706 | input->type = V4L2_INPUT_TYPE_CAMERA; |
707 | break; | |
708 | } | |
709 | ||
710 | case VIDIOC_G_INPUT: | |
711 | { | |
712 | u8 input; | |
713 | ||
8e113595 LP |
714 | if (chain->selector == NULL || |
715 | (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) { | |
c0efd232 LP |
716 | *(int *)arg = 0; |
717 | break; | |
718 | } | |
719 | ||
8e113595 LP |
720 | ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, |
721 | chain->selector->id, chain->dev->intfnum, | |
b482d923 | 722 | UVC_SU_INPUT_SELECT_CONTROL, &input, 1); |
c0efd232 LP |
723 | if (ret < 0) |
724 | return ret; | |
725 | ||
726 | *(int *)arg = input - 1; | |
727 | break; | |
728 | } | |
729 | ||
730 | case VIDIOC_S_INPUT: | |
731 | { | |
9086c7b9 | 732 | u32 input = *(u32 *)arg + 1; |
c0efd232 LP |
733 | |
734 | if ((ret = uvc_acquire_privileges(handle)) < 0) | |
735 | return ret; | |
736 | ||
8e113595 LP |
737 | if (chain->selector == NULL || |
738 | (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) { | |
c0efd232 LP |
739 | if (input != 1) |
740 | return -EINVAL; | |
741 | break; | |
742 | } | |
743 | ||
8ca5a639 | 744 | if (input == 0 || input > chain->selector->bNrInPins) |
c0efd232 LP |
745 | return -EINVAL; |
746 | ||
8e113595 LP |
747 | return uvc_query_ctrl(chain->dev, UVC_SET_CUR, |
748 | chain->selector->id, chain->dev->intfnum, | |
b482d923 | 749 | UVC_SU_INPUT_SELECT_CONTROL, &input, 1); |
c0efd232 LP |
750 | } |
751 | ||
752 | /* Try, Get, Set & Enum format */ | |
753 | case VIDIOC_ENUM_FMT: | |
754 | { | |
755 | struct v4l2_fmtdesc *fmt = arg; | |
756 | struct uvc_format *format; | |
8bbd90ce MN |
757 | enum v4l2_buf_type type = fmt->type; |
758 | __u32 index = fmt->index; | |
c0efd232 | 759 | |
35f02a68 LP |
760 | if (fmt->type != stream->type || |
761 | fmt->index >= stream->nformats) | |
c0efd232 LP |
762 | return -EINVAL; |
763 | ||
8bbd90ce MN |
764 | memset(fmt, 0, sizeof(*fmt)); |
765 | fmt->index = index; | |
766 | fmt->type = type; | |
767 | ||
35f02a68 | 768 | format = &stream->format[fmt->index]; |
c0efd232 LP |
769 | fmt->flags = 0; |
770 | if (format->flags & UVC_FMT_FLAG_COMPRESSED) | |
771 | fmt->flags |= V4L2_FMT_FLAG_COMPRESSED; | |
d0ebf307 | 772 | strlcpy(fmt->description, format->name, |
c0efd232 LP |
773 | sizeof fmt->description); |
774 | fmt->description[sizeof fmt->description - 1] = 0; | |
775 | fmt->pixelformat = format->fcc; | |
776 | break; | |
777 | } | |
778 | ||
779 | case VIDIOC_TRY_FMT: | |
780 | { | |
781 | struct uvc_streaming_control probe; | |
782 | ||
35f02a68 | 783 | return uvc_v4l2_try_format(stream, arg, &probe, NULL, NULL); |
c0efd232 LP |
784 | } |
785 | ||
786 | case VIDIOC_S_FMT: | |
787 | if ((ret = uvc_acquire_privileges(handle)) < 0) | |
788 | return ret; | |
789 | ||
35f02a68 | 790 | return uvc_v4l2_set_format(stream, arg); |
c0efd232 LP |
791 | |
792 | case VIDIOC_G_FMT: | |
35f02a68 | 793 | return uvc_v4l2_get_format(stream, arg); |
c0efd232 LP |
794 | |
795 | /* Frame size enumeration */ | |
796 | case VIDIOC_ENUM_FRAMESIZES: | |
797 | { | |
798 | struct v4l2_frmsizeenum *fsize = arg; | |
799 | struct uvc_format *format = NULL; | |
800 | struct uvc_frame *frame; | |
801 | int i; | |
802 | ||
803 | /* Look for the given pixel format */ | |
35f02a68 LP |
804 | for (i = 0; i < stream->nformats; i++) { |
805 | if (stream->format[i].fcc == | |
c0efd232 | 806 | fsize->pixel_format) { |
35f02a68 | 807 | format = &stream->format[i]; |
c0efd232 LP |
808 | break; |
809 | } | |
810 | } | |
811 | if (format == NULL) | |
812 | return -EINVAL; | |
813 | ||
814 | if (fsize->index >= format->nframes) | |
815 | return -EINVAL; | |
816 | ||
817 | frame = &format->frame[fsize->index]; | |
818 | fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
819 | fsize->discrete.width = frame->wWidth; | |
820 | fsize->discrete.height = frame->wHeight; | |
821 | break; | |
822 | } | |
823 | ||
824 | /* Frame interval enumeration */ | |
825 | case VIDIOC_ENUM_FRAMEINTERVALS: | |
826 | { | |
827 | struct v4l2_frmivalenum *fival = arg; | |
828 | struct uvc_format *format = NULL; | |
829 | struct uvc_frame *frame = NULL; | |
830 | int i; | |
831 | ||
832 | /* Look for the given pixel format and frame size */ | |
35f02a68 LP |
833 | for (i = 0; i < stream->nformats; i++) { |
834 | if (stream->format[i].fcc == | |
c0efd232 | 835 | fival->pixel_format) { |
35f02a68 | 836 | format = &stream->format[i]; |
c0efd232 LP |
837 | break; |
838 | } | |
839 | } | |
840 | if (format == NULL) | |
841 | return -EINVAL; | |
842 | ||
843 | for (i = 0; i < format->nframes; i++) { | |
844 | if (format->frame[i].wWidth == fival->width && | |
845 | format->frame[i].wHeight == fival->height) { | |
846 | frame = &format->frame[i]; | |
847 | break; | |
848 | } | |
849 | } | |
850 | if (frame == NULL) | |
851 | return -EINVAL; | |
852 | ||
853 | if (frame->bFrameIntervalType) { | |
854 | if (fival->index >= frame->bFrameIntervalType) | |
855 | return -EINVAL; | |
856 | ||
857 | fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; | |
858 | fival->discrete.numerator = | |
859 | frame->dwFrameInterval[fival->index]; | |
860 | fival->discrete.denominator = 10000000; | |
861 | uvc_simplify_fraction(&fival->discrete.numerator, | |
862 | &fival->discrete.denominator, 8, 333); | |
863 | } else { | |
864 | fival->type = V4L2_FRMIVAL_TYPE_STEPWISE; | |
865 | fival->stepwise.min.numerator = | |
866 | frame->dwFrameInterval[0]; | |
867 | fival->stepwise.min.denominator = 10000000; | |
868 | fival->stepwise.max.numerator = | |
869 | frame->dwFrameInterval[1]; | |
870 | fival->stepwise.max.denominator = 10000000; | |
871 | fival->stepwise.step.numerator = | |
872 | frame->dwFrameInterval[2]; | |
873 | fival->stepwise.step.denominator = 10000000; | |
874 | uvc_simplify_fraction(&fival->stepwise.min.numerator, | |
875 | &fival->stepwise.min.denominator, 8, 333); | |
876 | uvc_simplify_fraction(&fival->stepwise.max.numerator, | |
877 | &fival->stepwise.max.denominator, 8, 333); | |
878 | uvc_simplify_fraction(&fival->stepwise.step.numerator, | |
879 | &fival->stepwise.step.denominator, 8, 333); | |
880 | } | |
881 | break; | |
882 | } | |
883 | ||
884 | /* Get & Set streaming parameters */ | |
885 | case VIDIOC_G_PARM: | |
35f02a68 | 886 | return uvc_v4l2_get_streamparm(stream, arg); |
c0efd232 LP |
887 | |
888 | case VIDIOC_S_PARM: | |
889 | if ((ret = uvc_acquire_privileges(handle)) < 0) | |
890 | return ret; | |
891 | ||
35f02a68 | 892 | return uvc_v4l2_set_streamparm(stream, arg); |
c0efd232 LP |
893 | |
894 | /* Cropping and scaling */ | |
895 | case VIDIOC_CROPCAP: | |
896 | { | |
897 | struct v4l2_cropcap *ccap = arg; | |
c0efd232 | 898 | |
35f02a68 | 899 | if (ccap->type != stream->type) |
c0efd232 LP |
900 | return -EINVAL; |
901 | ||
902 | ccap->bounds.left = 0; | |
903 | ccap->bounds.top = 0; | |
6947756d LP |
904 | |
905 | mutex_lock(&stream->mutex); | |
906 | ccap->bounds.width = stream->cur_frame->wWidth; | |
907 | ccap->bounds.height = stream->cur_frame->wHeight; | |
908 | mutex_unlock(&stream->mutex); | |
c0efd232 LP |
909 | |
910 | ccap->defrect = ccap->bounds; | |
911 | ||
912 | ccap->pixelaspect.numerator = 1; | |
913 | ccap->pixelaspect.denominator = 1; | |
914 | break; | |
915 | } | |
916 | ||
917 | case VIDIOC_G_CROP: | |
918 | case VIDIOC_S_CROP: | |
919 | return -EINVAL; | |
920 | ||
921 | /* Buffers & streaming */ | |
922 | case VIDIOC_REQBUFS: | |
c0efd232 LP |
923 | if ((ret = uvc_acquire_privileges(handle)) < 0) |
924 | return ret; | |
925 | ||
6947756d | 926 | mutex_lock(&stream->mutex); |
6998b6fb | 927 | ret = uvc_alloc_buffers(&stream->queue, arg); |
6947756d | 928 | mutex_unlock(&stream->mutex); |
c0efd232 LP |
929 | if (ret < 0) |
930 | return ret; | |
931 | ||
1a969d98 LP |
932 | if (ret == 0) |
933 | uvc_dismiss_privileges(handle); | |
934 | ||
c0efd232 LP |
935 | ret = 0; |
936 | break; | |
c0efd232 LP |
937 | |
938 | case VIDIOC_QUERYBUF: | |
939 | { | |
940 | struct v4l2_buffer *buf = arg; | |
941 | ||
c0efd232 LP |
942 | if (!uvc_has_privileges(handle)) |
943 | return -EBUSY; | |
944 | ||
35f02a68 | 945 | return uvc_query_buffer(&stream->queue, buf); |
c0efd232 LP |
946 | } |
947 | ||
948 | case VIDIOC_QBUF: | |
949 | if (!uvc_has_privileges(handle)) | |
950 | return -EBUSY; | |
951 | ||
35f02a68 | 952 | return uvc_queue_buffer(&stream->queue, arg); |
c0efd232 LP |
953 | |
954 | case VIDIOC_DQBUF: | |
955 | if (!uvc_has_privileges(handle)) | |
956 | return -EBUSY; | |
957 | ||
35f02a68 | 958 | return uvc_dequeue_buffer(&stream->queue, arg, |
c0efd232 LP |
959 | file->f_flags & O_NONBLOCK); |
960 | ||
961 | case VIDIOC_STREAMON: | |
962 | { | |
963 | int *type = arg; | |
964 | ||
35f02a68 | 965 | if (*type != stream->type) |
c0efd232 LP |
966 | return -EINVAL; |
967 | ||
968 | if (!uvc_has_privileges(handle)) | |
969 | return -EBUSY; | |
970 | ||
6947756d | 971 | mutex_lock(&stream->mutex); |
35f02a68 | 972 | ret = uvc_video_enable(stream, 1); |
6947756d | 973 | mutex_unlock(&stream->mutex); |
35f02a68 | 974 | if (ret < 0) |
c0efd232 LP |
975 | return ret; |
976 | break; | |
977 | } | |
978 | ||
979 | case VIDIOC_STREAMOFF: | |
980 | { | |
981 | int *type = arg; | |
982 | ||
35f02a68 | 983 | if (*type != stream->type) |
c0efd232 LP |
984 | return -EINVAL; |
985 | ||
986 | if (!uvc_has_privileges(handle)) | |
987 | return -EBUSY; | |
988 | ||
35f02a68 | 989 | return uvc_video_enable(stream, 0); |
c0efd232 LP |
990 | } |
991 | ||
992 | /* Analog video standards make no sense for digital cameras. */ | |
993 | case VIDIOC_ENUMSTD: | |
994 | case VIDIOC_QUERYSTD: | |
995 | case VIDIOC_G_STD: | |
996 | case VIDIOC_S_STD: | |
997 | ||
998 | case VIDIOC_OVERLAY: | |
999 | ||
1000 | case VIDIOC_ENUMAUDIO: | |
1001 | case VIDIOC_ENUMAUDOUT: | |
1002 | ||
1003 | case VIDIOC_ENUMOUTPUT: | |
1004 | uvc_trace(UVC_TRACE_IOCTL, "Unsupported ioctl 0x%08x\n", cmd); | |
1005 | return -EINVAL; | |
1006 | ||
c0efd232 | 1007 | case UVCIOC_CTRL_MAP: |
227bd5b3 | 1008 | return uvc_ioctl_ctrl_map(chain, arg); |
fe78d187 MR |
1009 | |
1010 | case UVCIOC_CTRL_QUERY: | |
1011 | return uvc_xu_ctrl_query(chain, arg); | |
c0efd232 LP |
1012 | |
1013 | default: | |
08af245d HV |
1014 | uvc_trace(UVC_TRACE_IOCTL, "Unknown ioctl 0x%08x\n", cmd); |
1015 | return -EINVAL; | |
c0efd232 LP |
1016 | } |
1017 | ||
1018 | return ret; | |
1019 | } | |
1020 | ||
069b7479 | 1021 | static long uvc_v4l2_ioctl(struct file *file, |
c0efd232 LP |
1022 | unsigned int cmd, unsigned long arg) |
1023 | { | |
308bb52c LP |
1024 | if (uvc_trace_param & UVC_TRACE_IOCTL) { |
1025 | uvc_printk(KERN_DEBUG, "uvc_v4l2_ioctl("); | |
1026 | v4l_printk_ioctl(cmd); | |
1027 | printk(")\n"); | |
1028 | } | |
1029 | ||
f473bf76 | 1030 | return video_usercopy(file, cmd, arg, uvc_v4l2_do_ioctl); |
c0efd232 LP |
1031 | } |
1032 | ||
1033 | static ssize_t uvc_v4l2_read(struct file *file, char __user *data, | |
1034 | size_t count, loff_t *ppos) | |
1035 | { | |
1036 | uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_read: not implemented.\n"); | |
350d6407 | 1037 | return -EINVAL; |
c0efd232 LP |
1038 | } |
1039 | ||
c0efd232 LP |
1040 | static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma) |
1041 | { | |
abf84383 | 1042 | struct uvc_fh *handle = file->private_data; |
35f02a68 | 1043 | struct uvc_streaming *stream = handle->stream; |
c0efd232 LP |
1044 | |
1045 | uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_mmap\n"); | |
1046 | ||
4aa27597 | 1047 | return uvc_queue_mmap(&stream->queue, vma); |
c0efd232 LP |
1048 | } |
1049 | ||
1050 | static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait) | |
1051 | { | |
abf84383 | 1052 | struct uvc_fh *handle = file->private_data; |
35f02a68 | 1053 | struct uvc_streaming *stream = handle->stream; |
c0efd232 LP |
1054 | |
1055 | uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n"); | |
1056 | ||
35f02a68 | 1057 | return uvc_queue_poll(&stream->queue, file, wait); |
c0efd232 LP |
1058 | } |
1059 | ||
72969447 BL |
1060 | #ifndef CONFIG_MMU |
1061 | static unsigned long uvc_v4l2_get_unmapped_area(struct file *file, | |
1062 | unsigned long addr, unsigned long len, unsigned long pgoff, | |
1063 | unsigned long flags) | |
1064 | { | |
1065 | struct uvc_fh *handle = file->private_data; | |
1066 | struct uvc_streaming *stream = handle->stream; | |
1067 | ||
1068 | uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_get_unmapped_area\n"); | |
1069 | ||
1070 | return uvc_queue_get_unmapped_area(&stream->queue, pgoff); | |
1071 | } | |
1072 | #endif | |
1073 | ||
bec43661 | 1074 | const struct v4l2_file_operations uvc_fops = { |
c0efd232 LP |
1075 | .owner = THIS_MODULE, |
1076 | .open = uvc_v4l2_open, | |
1077 | .release = uvc_v4l2_release, | |
673eb9ff | 1078 | .unlocked_ioctl = uvc_v4l2_ioctl, |
c0efd232 LP |
1079 | .read = uvc_v4l2_read, |
1080 | .mmap = uvc_v4l2_mmap, | |
1081 | .poll = uvc_v4l2_poll, | |
72969447 BL |
1082 | #ifndef CONFIG_MMU |
1083 | .get_unmapped_area = uvc_v4l2_get_unmapped_area, | |
1084 | #endif | |
c0efd232 | 1085 | }; |
f87086e3 | 1086 |