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622897da MH |
1 | /* |
2 | * Copyright (C) 2012 Texas Instruments Inc | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License as | |
6 | * published by the Free Software Foundation version 2. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | * | |
17 | * Contributors: | |
18 | * Manjunath Hadli <manjunath.hadli@ti.com> | |
19 | * Prabhakar Lad <prabhakar.lad@ti.com> | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/slab.h> | |
24 | ||
25 | #include <media/v4l2-ioctl.h> | |
26 | ||
27 | #include "vpfe.h" | |
28 | #include "vpfe_mc_capture.h" | |
29 | ||
30 | /* minimum number of buffers needed in cont-mode */ | |
31 | #define MIN_NUM_BUFFERS 3 | |
32 | ||
33 | static int debug; | |
34 | ||
35 | /* get v4l2 subdev pointer to external subdev which is active */ | |
36 | static struct media_entity *vpfe_get_input_entity | |
37 | (struct vpfe_video_device *video) | |
38 | { | |
39 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
40 | struct media_pad *remote; | |
41 | ||
1bddf1b3 | 42 | remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]); |
622897da MH |
43 | if (remote == NULL) { |
44 | pr_err("Invalid media connection to isif/ccdc\n"); | |
45 | return NULL; | |
46 | } | |
47 | return remote->entity; | |
48 | } | |
49 | ||
50 | /* updates external subdev(sensor/decoder) which is active */ | |
51 | static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video) | |
52 | { | |
53 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
54 | struct vpfe_config *vpfe_cfg; | |
55 | struct v4l2_subdev *subdev; | |
56 | struct media_pad *remote; | |
57 | int i; | |
58 | ||
1bddf1b3 | 59 | remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]); |
622897da MH |
60 | if (remote == NULL) { |
61 | pr_err("Invalid media connection to isif/ccdc\n"); | |
62 | return -EINVAL; | |
63 | } | |
64 | ||
65 | subdev = media_entity_to_v4l2_subdev(remote->entity); | |
66 | vpfe_cfg = vpfe_dev->pdev->platform_data; | |
67 | for (i = 0; i < vpfe_cfg->num_subdevs; i++) { | |
68 | if (!strcmp(vpfe_cfg->sub_devs[i].module_name, subdev->name)) { | |
69 | video->current_ext_subdev = &vpfe_cfg->sub_devs[i]; | |
70 | break; | |
71 | } | |
72 | } | |
73 | ||
74 | /* if user not linked decoder/sensor to isif/ccdc */ | |
75 | if (i == vpfe_cfg->num_subdevs) { | |
76 | pr_err("Invalid media chain connection to isif/ccdc\n"); | |
77 | return -EINVAL; | |
78 | } | |
79 | /* find the v4l2 subdev pointer */ | |
80 | for (i = 0; i < vpfe_dev->num_ext_subdevs; i++) { | |
81 | if (!strcmp(video->current_ext_subdev->module_name, | |
82 | vpfe_dev->sd[i]->name)) | |
83 | video->current_ext_subdev->subdev = vpfe_dev->sd[i]; | |
84 | } | |
85 | return 0; | |
86 | } | |
87 | ||
88 | /* get the subdev which is connected to the output video node */ | |
89 | static struct v4l2_subdev * | |
90 | vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad) | |
91 | { | |
1bddf1b3 | 92 | struct media_pad *remote = media_entity_remote_pad(&video->pad); |
622897da MH |
93 | |
94 | if (remote == NULL || remote->entity->type != MEDIA_ENT_T_V4L2_SUBDEV) | |
95 | return NULL; | |
96 | if (pad) | |
97 | *pad = remote->index; | |
98 | return media_entity_to_v4l2_subdev(remote->entity); | |
99 | } | |
100 | ||
101 | /* get the format set at output pad of the adjacent subdev */ | |
102 | static int | |
103 | __vpfe_video_get_format(struct vpfe_video_device *video, | |
104 | struct v4l2_format *format) | |
105 | { | |
106 | struct v4l2_subdev_format fmt; | |
107 | struct v4l2_subdev *subdev; | |
108 | struct media_pad *remote; | |
109 | u32 pad; | |
110 | int ret; | |
111 | ||
112 | subdev = vpfe_video_remote_subdev(video, &pad); | |
113 | if (subdev == NULL) | |
114 | return -EINVAL; | |
115 | ||
116 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
1bddf1b3 | 117 | remote = media_entity_remote_pad(&video->pad); |
622897da MH |
118 | fmt.pad = remote->index; |
119 | ||
120 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); | |
121 | if (ret == -ENOIOCTLCMD) | |
122 | return -EINVAL; | |
123 | ||
124 | format->type = video->type; | |
125 | /* convert mbus_format to v4l2_format */ | |
126 | v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); | |
127 | mbus_to_pix(&fmt.format, &format->fmt.pix); | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | /* make a note of pipeline details */ | |
133 | static void vpfe_prepare_pipeline(struct vpfe_video_device *video) | |
134 | { | |
135 | struct media_entity *entity = &video->video_dev.entity; | |
136 | struct media_device *mdev = entity->parent; | |
137 | struct vpfe_pipeline *pipe = &video->pipe; | |
138 | struct vpfe_video_device *far_end = NULL; | |
139 | struct media_entity_graph graph; | |
140 | ||
141 | pipe->input_num = 0; | |
142 | pipe->output_num = 0; | |
143 | ||
144 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
145 | pipe->inputs[pipe->input_num++] = video; | |
146 | else | |
147 | pipe->outputs[pipe->output_num++] = video; | |
148 | ||
149 | mutex_lock(&mdev->graph_mutex); | |
150 | media_entity_graph_walk_start(&graph, entity); | |
151 | while ((entity = media_entity_graph_walk_next(&graph))) { | |
152 | if (entity == &video->video_dev.entity) | |
153 | continue; | |
154 | if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) | |
155 | continue; | |
156 | far_end = to_vpfe_video(media_entity_to_video_device(entity)); | |
157 | if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
158 | pipe->inputs[pipe->input_num++] = far_end; | |
159 | else | |
160 | pipe->outputs[pipe->output_num++] = far_end; | |
161 | } | |
162 | mutex_unlock(&mdev->graph_mutex); | |
163 | } | |
164 | ||
165 | /* update pipe state selected by user */ | |
166 | static int vpfe_update_pipe_state(struct vpfe_video_device *video) | |
167 | { | |
168 | struct vpfe_pipeline *pipe = &video->pipe; | |
169 | int ret; | |
170 | ||
171 | vpfe_prepare_pipeline(video); | |
172 | ||
173 | /* Find out if there is any input video | |
174 | if yes, it is single shot. | |
175 | */ | |
176 | if (pipe->input_num == 0) { | |
177 | pipe->state = VPFE_PIPELINE_STREAM_CONTINUOUS; | |
178 | ret = vpfe_update_current_ext_subdev(video); | |
179 | if (ret) { | |
180 | pr_err("Invalid external subdev\n"); | |
181 | return ret; | |
182 | } | |
183 | } else { | |
184 | pipe->state = VPFE_PIPELINE_STREAM_SINGLESHOT; | |
185 | } | |
186 | video->initialized = 1; | |
187 | video->skip_frame_count = 1; | |
188 | video->skip_frame_count_init = 1; | |
189 | return 0; | |
190 | } | |
191 | ||
192 | /* checks wether pipeline is ready for enabling */ | |
193 | int vpfe_video_is_pipe_ready(struct vpfe_pipeline *pipe) | |
194 | { | |
195 | int i; | |
196 | ||
197 | for (i = 0; i < pipe->input_num; i++) | |
198 | if (!pipe->inputs[i]->started || | |
199 | pipe->inputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED) | |
200 | return 0; | |
201 | for (i = 0; i < pipe->output_num; i++) | |
202 | if (!pipe->outputs[i]->started || | |
203 | pipe->outputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED) | |
204 | return 0; | |
205 | return 1; | |
206 | } | |
207 | ||
208 | /** | |
209 | * Validate a pipeline by checking both ends of all links for format | |
210 | * discrepancies. | |
211 | * | |
212 | * Return 0 if all formats match, or -EPIPE if at least one link is found with | |
213 | * different formats on its two ends. | |
214 | */ | |
215 | static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe) | |
216 | { | |
217 | struct v4l2_subdev_format fmt_source; | |
218 | struct v4l2_subdev_format fmt_sink; | |
219 | struct v4l2_subdev *subdev; | |
220 | struct media_pad *pad; | |
221 | int ret; | |
222 | ||
223 | /* | |
224 | * Should not matter if it is output[0] or 1 as | |
225 | * the general ideas is to traverse backwards and | |
226 | * the fact that the out video node always has the | |
227 | * format of the connected pad. | |
228 | */ | |
229 | subdev = vpfe_video_remote_subdev(pipe->outputs[0], NULL); | |
230 | if (subdev == NULL) | |
231 | return -EPIPE; | |
232 | ||
233 | while (1) { | |
234 | /* Retrieve the sink format */ | |
235 | pad = &subdev->entity.pads[0]; | |
236 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
237 | break; | |
238 | ||
239 | fmt_sink.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
240 | fmt_sink.pad = pad->index; | |
241 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, | |
242 | &fmt_sink); | |
243 | ||
244 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
245 | return -EPIPE; | |
246 | ||
247 | /* Retrieve the source format */ | |
1bddf1b3 | 248 | pad = media_entity_remote_pad(pad); |
622897da MH |
249 | if (pad == NULL || |
250 | pad->entity->type != MEDIA_ENT_T_V4L2_SUBDEV) | |
251 | break; | |
252 | ||
253 | subdev = media_entity_to_v4l2_subdev(pad->entity); | |
254 | ||
255 | fmt_source.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
256 | fmt_source.pad = pad->index; | |
257 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_source); | |
258 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
259 | return -EPIPE; | |
260 | ||
261 | /* Check if the two ends match */ | |
262 | if (fmt_source.format.code != fmt_sink.format.code || | |
263 | fmt_source.format.width != fmt_sink.format.width || | |
264 | fmt_source.format.height != fmt_sink.format.height) | |
265 | return -EPIPE; | |
266 | } | |
267 | return 0; | |
268 | } | |
269 | ||
270 | /* | |
271 | * vpfe_pipeline_enable() - Enable streaming on a pipeline | |
272 | * @vpfe_dev: vpfe device | |
273 | * @pipe: vpfe pipeline | |
274 | * | |
275 | * Walk the entities chain starting at the pipeline output video node and start | |
276 | * all modules in the chain in the given mode. | |
277 | * | |
278 | * Return 0 if successful, or the return value of the failed video::s_stream | |
279 | * operation otherwise. | |
280 | */ | |
281 | static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) | |
282 | { | |
283 | struct media_entity_graph graph; | |
284 | struct media_entity *entity; | |
285 | struct v4l2_subdev *subdev; | |
286 | struct media_device *mdev; | |
287 | int ret = 0; | |
288 | ||
289 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) | |
290 | entity = vpfe_get_input_entity(pipe->outputs[0]); | |
291 | else | |
292 | entity = &pipe->inputs[0]->video_dev.entity; | |
293 | ||
294 | mdev = entity->parent; | |
295 | mutex_lock(&mdev->graph_mutex); | |
296 | media_entity_graph_walk_start(&graph, entity); | |
297 | while ((entity = media_entity_graph_walk_next(&graph))) { | |
298 | ||
299 | if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) | |
300 | continue; | |
301 | subdev = media_entity_to_v4l2_subdev(entity); | |
302 | ret = v4l2_subdev_call(subdev, video, s_stream, 1); | |
303 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
304 | break; | |
305 | } | |
306 | mutex_unlock(&mdev->graph_mutex); | |
307 | return ret; | |
308 | } | |
309 | ||
310 | /* | |
311 | * vpfe_pipeline_disable() - Disable streaming on a pipeline | |
312 | * @vpfe_dev: vpfe device | |
313 | * @pipe: VPFE pipeline | |
314 | * | |
315 | * Walk the entities chain starting at the pipeline output video node and stop | |
316 | * all modules in the chain. | |
317 | * | |
318 | * Return 0 if all modules have been properly stopped, or -ETIMEDOUT if a module | |
319 | * can't be stopped. | |
320 | */ | |
321 | static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) | |
322 | { | |
323 | struct media_entity_graph graph; | |
324 | struct media_entity *entity; | |
325 | struct v4l2_subdev *subdev; | |
326 | struct media_device *mdev; | |
327 | int ret = 0; | |
328 | ||
329 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) | |
330 | entity = vpfe_get_input_entity(pipe->outputs[0]); | |
331 | else | |
332 | entity = &pipe->inputs[0]->video_dev.entity; | |
333 | ||
334 | mdev = entity->parent; | |
335 | mutex_lock(&mdev->graph_mutex); | |
336 | media_entity_graph_walk_start(&graph, entity); | |
337 | ||
338 | while ((entity = media_entity_graph_walk_next(&graph))) { | |
339 | ||
340 | if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) | |
341 | continue; | |
342 | subdev = media_entity_to_v4l2_subdev(entity); | |
343 | ret = v4l2_subdev_call(subdev, video, s_stream, 0); | |
344 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
345 | break; | |
346 | } | |
347 | mutex_unlock(&mdev->graph_mutex); | |
348 | ||
3e6e3b3d | 349 | return ret ? -ETIMEDOUT : 0; |
622897da MH |
350 | } |
351 | ||
352 | /* | |
353 | * vpfe_pipeline_set_stream() - Enable/disable streaming on a pipeline | |
354 | * @vpfe_dev: VPFE device | |
355 | * @pipe: VPFE pipeline | |
356 | * @state: Stream state (stopped or active) | |
357 | * | |
358 | * Set the pipeline to the given stream state. | |
359 | * | |
2f9e96c3 | 360 | * Return 0 if successful, or the return value of the failed video::s_stream |
622897da MH |
361 | * operation otherwise. |
362 | */ | |
363 | static int vpfe_pipeline_set_stream(struct vpfe_pipeline *pipe, | |
364 | enum vpfe_pipeline_stream_state state) | |
365 | { | |
366 | if (state == VPFE_PIPELINE_STREAM_STOPPED) | |
367 | return vpfe_pipeline_disable(pipe); | |
368 | ||
369 | return vpfe_pipeline_enable(pipe); | |
370 | } | |
371 | ||
372 | static int all_videos_stopped(struct vpfe_video_device *video) | |
373 | { | |
374 | struct vpfe_pipeline *pipe = &video->pipe; | |
375 | int i; | |
376 | ||
377 | for (i = 0; i < pipe->input_num; i++) | |
378 | if (pipe->inputs[i]->started) | |
379 | return 0; | |
380 | for (i = 0; i < pipe->output_num; i++) | |
381 | if (pipe->outputs[i]->started) | |
382 | return 0; | |
383 | return 1; | |
384 | } | |
385 | ||
386 | /* | |
387 | * vpfe_open() - open video device | |
388 | * @file: file pointer | |
389 | * | |
390 | * initialize media pipeline state, allocate memory for file handle | |
391 | * | |
392 | * Return 0 if successful, or the return -ENODEV otherwise. | |
393 | */ | |
394 | static int vpfe_open(struct file *file) | |
395 | { | |
396 | struct vpfe_video_device *video = video_drvdata(file); | |
397 | struct vpfe_fh *handle; | |
398 | ||
399 | /* Allocate memory for the file handle object */ | |
400 | handle = kzalloc(sizeof(struct vpfe_fh), GFP_KERNEL); | |
401 | ||
402 | if (handle == NULL) | |
403 | return -ENOMEM; | |
404 | ||
405 | v4l2_fh_init(&handle->vfh, &video->video_dev); | |
406 | v4l2_fh_add(&handle->vfh); | |
407 | ||
408 | mutex_lock(&video->lock); | |
409 | /* If decoder is not initialized. initialize it */ | |
410 | if (!video->initialized && vpfe_update_pipe_state(video)) { | |
411 | mutex_unlock(&video->lock); | |
412 | return -ENODEV; | |
413 | } | |
414 | /* Increment device users counter */ | |
415 | video->usrs++; | |
416 | /* Set io_allowed member to false */ | |
417 | handle->io_allowed = 0; | |
418 | v4l2_prio_open(&video->prio, &handle->prio); | |
419 | handle->video = video; | |
420 | file->private_data = &handle->vfh; | |
421 | mutex_unlock(&video->lock); | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
426 | /* get the next buffer available from dma queue */ | |
427 | static unsigned long | |
428 | vpfe_video_get_next_buffer(struct vpfe_video_device *video) | |
429 | { | |
430 | video->cur_frm = video->next_frm = | |
431 | list_entry(video->dma_queue.next, | |
432 | struct vpfe_cap_buffer, list); | |
433 | ||
434 | list_del(&video->next_frm->list); | |
435 | video->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; | |
436 | return vb2_dma_contig_plane_dma_addr(&video->next_frm->vb, 0); | |
437 | } | |
438 | ||
439 | /* schedule the next buffer which is available on dma queue */ | |
440 | void vpfe_video_schedule_next_buffer(struct vpfe_video_device *video) | |
441 | { | |
442 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
443 | unsigned long addr; | |
444 | ||
445 | if (list_empty(&video->dma_queue)) | |
446 | return; | |
447 | ||
448 | video->next_frm = list_entry(video->dma_queue.next, | |
449 | struct vpfe_cap_buffer, list); | |
450 | ||
451 | if (VPFE_PIPELINE_STREAM_SINGLESHOT == video->pipe.state) | |
452 | video->cur_frm = video->next_frm; | |
453 | ||
454 | list_del(&video->next_frm->list); | |
455 | video->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; | |
456 | addr = vb2_dma_contig_plane_dma_addr(&video->next_frm->vb, 0); | |
457 | video->ops->queue(vpfe_dev, addr); | |
458 | video->state = VPFE_VIDEO_BUFFER_QUEUED; | |
459 | } | |
460 | ||
461 | /* schedule the buffer for capturing bottom field */ | |
462 | void vpfe_video_schedule_bottom_field(struct vpfe_video_device *video) | |
463 | { | |
464 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
465 | unsigned long addr; | |
466 | ||
467 | addr = vb2_dma_contig_plane_dma_addr(&video->cur_frm->vb, 0); | |
468 | addr += video->field_off; | |
469 | video->ops->queue(vpfe_dev, addr); | |
470 | } | |
471 | ||
472 | /* make buffer available for dequeue */ | |
473 | void vpfe_video_process_buffer_complete(struct vpfe_video_device *video) | |
474 | { | |
475 | struct vpfe_pipeline *pipe = &video->pipe; | |
476 | ||
477 | do_gettimeofday(&video->cur_frm->vb.v4l2_buf.timestamp); | |
478 | vb2_buffer_done(&video->cur_frm->vb, VB2_BUF_STATE_DONE); | |
479 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) | |
480 | video->cur_frm = video->next_frm; | |
481 | } | |
482 | ||
483 | /* vpfe_stop_capture() - stop streaming */ | |
484 | static void vpfe_stop_capture(struct vpfe_video_device *video) | |
485 | { | |
486 | struct vpfe_pipeline *pipe = &video->pipe; | |
487 | ||
488 | video->started = 0; | |
489 | ||
490 | if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) | |
491 | return; | |
492 | if (all_videos_stopped(video)) | |
493 | vpfe_pipeline_set_stream(pipe, | |
494 | VPFE_PIPELINE_STREAM_STOPPED); | |
495 | } | |
496 | ||
497 | /* | |
498 | * vpfe_release() - release video device | |
499 | * @file: file pointer | |
500 | * | |
501 | * deletes buffer queue, frees the buffers and the vpfe file handle | |
502 | * | |
503 | * Return 0 | |
504 | */ | |
505 | static int vpfe_release(struct file *file) | |
506 | { | |
507 | struct vpfe_video_device *video = video_drvdata(file); | |
508 | struct v4l2_fh *vfh = file->private_data; | |
509 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
510 | struct vpfe_fh *fh = container_of(vfh, struct vpfe_fh, vfh); | |
511 | ||
512 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n"); | |
513 | ||
514 | /* Get the device lock */ | |
515 | mutex_lock(&video->lock); | |
516 | /* if this instance is doing IO */ | |
517 | if (fh->io_allowed) { | |
518 | if (video->started) { | |
519 | vpfe_stop_capture(video); | |
520 | /* mark pipe state as stopped in vpfe_release(), | |
521 | as app might call streamon() after streamoff() | |
522 | in which case driver has to start streaming. | |
523 | */ | |
524 | video->pipe.state = VPFE_PIPELINE_STREAM_STOPPED; | |
525 | vb2_streamoff(&video->buffer_queue, | |
526 | video->buffer_queue.type); | |
527 | } | |
528 | video->io_usrs = 0; | |
529 | /* Free buffers allocated */ | |
530 | vb2_queue_release(&video->buffer_queue); | |
531 | vb2_dma_contig_cleanup_ctx(video->alloc_ctx); | |
532 | } | |
533 | /* Decrement device users counter */ | |
534 | video->usrs--; | |
535 | /* Close the priority */ | |
536 | v4l2_prio_close(&video->prio, fh->prio); | |
537 | /* If this is the last file handle */ | |
538 | if (!video->usrs) | |
539 | video->initialized = 0; | |
540 | mutex_unlock(&video->lock); | |
541 | file->private_data = NULL; | |
542 | /* Free memory allocated to file handle object */ | |
543 | v4l2_fh_del(vfh); | |
544 | kzfree(fh); | |
545 | return 0; | |
546 | } | |
547 | ||
548 | /* | |
549 | * vpfe_mmap() - It is used to map kernel space buffers | |
550 | * into user spaces | |
551 | */ | |
552 | static int vpfe_mmap(struct file *file, struct vm_area_struct *vma) | |
553 | { | |
554 | struct vpfe_video_device *video = video_drvdata(file); | |
555 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
556 | ||
557 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n"); | |
558 | return vb2_mmap(&video->buffer_queue, vma); | |
559 | } | |
560 | ||
561 | /* | |
562 | * vpfe_poll() - It is used for select/poll system call | |
563 | */ | |
564 | static unsigned int vpfe_poll(struct file *file, poll_table *wait) | |
565 | { | |
566 | struct vpfe_video_device *video = video_drvdata(file); | |
567 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
568 | ||
569 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n"); | |
570 | if (video->started) | |
571 | return vb2_poll(&video->buffer_queue, file, wait); | |
572 | return 0; | |
573 | } | |
574 | ||
575 | /* vpfe capture driver file operations */ | |
576 | static const struct v4l2_file_operations vpfe_fops = { | |
577 | .owner = THIS_MODULE, | |
578 | .open = vpfe_open, | |
579 | .release = vpfe_release, | |
580 | .unlocked_ioctl = video_ioctl2, | |
581 | .mmap = vpfe_mmap, | |
582 | .poll = vpfe_poll | |
583 | }; | |
584 | ||
585 | /* | |
586 | * vpfe_querycap() - query capabilities of video device | |
587 | * @file: file pointer | |
588 | * @priv: void pointer | |
589 | * @cap: pointer to v4l2_capability structure | |
590 | * | |
591 | * fills v4l2 capabilities structure | |
592 | * | |
593 | * Return 0 | |
594 | */ | |
595 | static int vpfe_querycap(struct file *file, void *priv, | |
596 | struct v4l2_capability *cap) | |
597 | { | |
598 | struct vpfe_video_device *video = video_drvdata(file); | |
599 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
600 | ||
601 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n"); | |
602 | ||
603 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
604 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
605 | else | |
606 | cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; | |
607 | cap->device_caps = cap->capabilities; | |
608 | cap->version = VPFE_CAPTURE_VERSION_CODE; | |
609 | strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver)); | |
610 | strlcpy(cap->bus_info, "VPFE", sizeof(cap->bus_info)); | |
611 | strlcpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card)); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | /* | |
617 | * vpfe_g_fmt() - get the format which is active on video device | |
618 | * @file: file pointer | |
619 | * @priv: void pointer | |
620 | * @fmt: pointer to v4l2_format structure | |
621 | * | |
622 | * fills v4l2 format structure with active format | |
623 | * | |
624 | * Return 0 | |
625 | */ | |
626 | static int vpfe_g_fmt(struct file *file, void *priv, | |
627 | struct v4l2_format *fmt) | |
628 | { | |
629 | struct vpfe_video_device *video = video_drvdata(file); | |
630 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
631 | ||
632 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt\n"); | |
633 | /* Fill in the information about format */ | |
634 | *fmt = video->fmt; | |
635 | return 0; | |
636 | } | |
637 | ||
638 | /* | |
639 | * vpfe_enum_fmt() - enum formats supported on media chain | |
640 | * @file: file pointer | |
641 | * @priv: void pointer | |
642 | * @fmt: pointer to v4l2_fmtdesc structure | |
643 | * | |
644 | * fills v4l2_fmtdesc structure with output format set on adjacent subdev, | |
645 | * only one format is enumearted as subdevs are already configured | |
646 | * | |
2f9e96c3 | 647 | * Return 0 if successful, error code otherwise |
622897da MH |
648 | */ |
649 | static int vpfe_enum_fmt(struct file *file, void *priv, | |
650 | struct v4l2_fmtdesc *fmt) | |
651 | { | |
652 | struct vpfe_video_device *video = video_drvdata(file); | |
653 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
654 | struct v4l2_subdev_format sd_fmt; | |
655 | struct v4l2_mbus_framefmt mbus; | |
656 | struct v4l2_subdev *subdev; | |
657 | struct v4l2_format format; | |
658 | struct media_pad *remote; | |
659 | int ret; | |
660 | ||
661 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt\n"); | |
662 | ||
663 | /* since already subdev pad format is set, | |
664 | only one pixel format is available */ | |
665 | if (fmt->index > 0) { | |
666 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid index\n"); | |
667 | return -EINVAL; | |
668 | } | |
669 | /* get the remote pad */ | |
1bddf1b3 | 670 | remote = media_entity_remote_pad(&video->pad); |
622897da MH |
671 | if (remote == NULL) { |
672 | v4l2_err(&vpfe_dev->v4l2_dev, | |
673 | "invalid remote pad for video node\n"); | |
674 | return -EINVAL; | |
675 | } | |
676 | /* get the remote subdev */ | |
677 | subdev = vpfe_video_remote_subdev(video, NULL); | |
678 | if (subdev == NULL) { | |
679 | v4l2_err(&vpfe_dev->v4l2_dev, | |
680 | "invalid remote subdev for video node\n"); | |
681 | return -EINVAL; | |
682 | } | |
683 | sd_fmt.pad = remote->index; | |
684 | sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
685 | /* get output format of remote subdev */ | |
686 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &sd_fmt); | |
687 | if (ret) { | |
688 | v4l2_err(&vpfe_dev->v4l2_dev, | |
689 | "invalid remote subdev for video node\n"); | |
690 | return ret; | |
691 | } | |
692 | /* convert to pix format */ | |
693 | mbus.code = sd_fmt.format.code; | |
694 | mbus_to_pix(&mbus, &format.fmt.pix); | |
695 | /* copy the result */ | |
696 | fmt->pixelformat = format.fmt.pix.pixelformat; | |
697 | ||
698 | return 0; | |
699 | } | |
700 | ||
701 | /* | |
702 | * vpfe_s_fmt() - set the format on video device | |
703 | * @file: file pointer | |
704 | * @priv: void pointer | |
705 | * @fmt: pointer to v4l2_format structure | |
706 | * | |
707 | * validate and set the format on video device | |
708 | * | |
709 | * Return 0 on success, error code otherwise | |
710 | */ | |
711 | static int vpfe_s_fmt(struct file *file, void *priv, | |
712 | struct v4l2_format *fmt) | |
713 | { | |
714 | struct vpfe_video_device *video = video_drvdata(file); | |
715 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
716 | struct v4l2_format format; | |
717 | int ret; | |
718 | ||
719 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt\n"); | |
720 | /* If streaming is started, return error */ | |
721 | if (video->started) { | |
722 | v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n"); | |
723 | return -EBUSY; | |
724 | } | |
725 | /* get adjacent subdev's output pad format */ | |
726 | ret = __vpfe_video_get_format(video, &format); | |
727 | if (ret) | |
728 | return ret; | |
729 | *fmt = format; | |
730 | video->fmt = *fmt; | |
731 | return 0; | |
732 | } | |
733 | ||
734 | /* | |
735 | * vpfe_try_fmt() - try the format on video device | |
736 | * @file: file pointer | |
737 | * @priv: void pointer | |
738 | * @fmt: pointer to v4l2_format structure | |
739 | * | |
740 | * validate the format, update with correct format | |
741 | * based on output format set on adjacent subdev | |
742 | * | |
743 | * Return 0 on success, error code otherwise | |
744 | */ | |
745 | static int vpfe_try_fmt(struct file *file, void *priv, | |
746 | struct v4l2_format *fmt) | |
747 | { | |
748 | struct vpfe_video_device *video = video_drvdata(file); | |
749 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
750 | struct v4l2_format format; | |
751 | int ret; | |
752 | ||
753 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt\n"); | |
754 | /* get adjacent subdev's output pad format */ | |
755 | ret = __vpfe_video_get_format(video, &format); | |
756 | if (ret) | |
757 | return ret; | |
758 | ||
759 | *fmt = format; | |
760 | return 0; | |
761 | } | |
762 | ||
763 | /* | |
764 | * vpfe_enum_input() - enum inputs supported on media chain | |
765 | * @file: file pointer | |
766 | * @priv: void pointer | |
767 | * @fmt: pointer to v4l2_fmtdesc structure | |
768 | * | |
769 | * fills v4l2_input structure with input available on media chain, | |
770 | * only one input is enumearted as media chain is setup by this time | |
771 | * | |
2f9e96c3 | 772 | * Return 0 if successful, -EINVAL is media chain is invalid |
622897da MH |
773 | */ |
774 | static int vpfe_enum_input(struct file *file, void *priv, | |
775 | struct v4l2_input *inp) | |
776 | { | |
777 | struct vpfe_video_device *video = video_drvdata(file); | |
778 | struct vpfe_ext_subdev_info *sdinfo = video->current_ext_subdev; | |
779 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
780 | ||
781 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n"); | |
2f9e96c3 | 782 | /* enumerate from the subdev user has chosen through mc */ |
622897da MH |
783 | if (inp->index < sdinfo->num_inputs) { |
784 | memcpy(inp, &sdinfo->inputs[inp->index], | |
785 | sizeof(struct v4l2_input)); | |
786 | return 0; | |
787 | } | |
788 | return -EINVAL; | |
789 | } | |
790 | ||
791 | /* | |
792 | * vpfe_g_input() - get index of the input which is active | |
793 | * @file: file pointer | |
794 | * @priv: void pointer | |
795 | * @index: pointer to unsigned int | |
796 | * | |
797 | * set index with input index which is active | |
798 | */ | |
799 | static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) | |
800 | { | |
801 | struct vpfe_video_device *video = video_drvdata(file); | |
802 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
803 | ||
804 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n"); | |
805 | ||
806 | *index = video->current_input; | |
807 | return 0; | |
808 | } | |
809 | ||
810 | /* | |
811 | * vpfe_s_input() - set input which is pointed by input index | |
812 | * @file: file pointer | |
813 | * @priv: void pointer | |
814 | * @index: pointer to unsigned int | |
815 | * | |
816 | * set input on external subdev | |
817 | * | |
818 | * Return 0 on success, error code otherwise | |
819 | */ | |
820 | static int vpfe_s_input(struct file *file, void *priv, unsigned int index) | |
821 | { | |
822 | struct vpfe_video_device *video = video_drvdata(file); | |
823 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
824 | struct vpfe_ext_subdev_info *sdinfo; | |
825 | struct vpfe_route *route; | |
826 | struct v4l2_input *inps; | |
827 | u32 output; | |
828 | u32 input; | |
829 | int ret; | |
830 | int i; | |
831 | ||
832 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n"); | |
833 | ||
834 | ret = mutex_lock_interruptible(&video->lock); | |
835 | if (ret) | |
836 | return ret; | |
837 | /* | |
838 | * If streaming is started return device busy | |
839 | * error | |
840 | */ | |
841 | if (video->started) { | |
842 | v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n"); | |
843 | ret = -EBUSY; | |
844 | goto unlock_out; | |
845 | } | |
846 | ||
847 | sdinfo = video->current_ext_subdev; | |
848 | if (!sdinfo->registered) { | |
849 | ret = -EINVAL; | |
850 | goto unlock_out; | |
851 | } | |
852 | if (vpfe_dev->cfg->setup_input && | |
853 | vpfe_dev->cfg->setup_input(sdinfo->grp_id) < 0) { | |
854 | ret = -EFAULT; | |
855 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, | |
856 | "couldn't setup input for %s\n", | |
857 | sdinfo->module_name); | |
858 | goto unlock_out; | |
859 | } | |
860 | route = &sdinfo->routes[index]; | |
861 | if (route && sdinfo->can_route) { | |
862 | input = route->input; | |
863 | output = route->output; | |
864 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, | |
865 | sdinfo->grp_id, video, | |
866 | s_routing, input, output, 0); | |
867 | if (ret) { | |
868 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, | |
869 | "s_input:error in setting input in decoder\n"); | |
870 | ret = -EINVAL; | |
871 | goto unlock_out; | |
872 | } | |
873 | } | |
874 | /* set standards set by subdev in video device */ | |
875 | for (i = 0; i < sdinfo->num_inputs; i++) { | |
876 | inps = &sdinfo->inputs[i]; | |
877 | video->video_dev.tvnorms |= inps->std; | |
878 | } | |
879 | video->current_input = index; | |
880 | unlock_out: | |
881 | mutex_unlock(&video->lock); | |
882 | return ret; | |
883 | } | |
884 | ||
885 | /* | |
886 | * vpfe_querystd() - query std which is being input on external subdev | |
887 | * @file: file pointer | |
888 | * @priv: void pointer | |
889 | * @std_id: pointer to v4l2_std_id structure | |
890 | * | |
891 | * call external subdev through v4l2_device_call_until_err to | |
892 | * get the std that is being active. | |
893 | * | |
894 | * Return 0 on success, error code otherwise | |
895 | */ | |
896 | static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) | |
897 | { | |
898 | struct vpfe_video_device *video = video_drvdata(file); | |
899 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
900 | struct vpfe_ext_subdev_info *sdinfo; | |
901 | int ret; | |
902 | ||
903 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n"); | |
904 | ||
905 | ret = mutex_lock_interruptible(&video->lock); | |
906 | sdinfo = video->current_ext_subdev; | |
907 | if (ret) | |
908 | return ret; | |
909 | /* Call querystd function of decoder device */ | |
910 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, | |
911 | video, querystd, std_id); | |
912 | mutex_unlock(&video->lock); | |
913 | return ret; | |
914 | } | |
915 | ||
916 | /* | |
917 | * vpfe_s_std() - set std on external subdev | |
918 | * @file: file pointer | |
919 | * @priv: void pointer | |
920 | * @std_id: pointer to v4l2_std_id structure | |
921 | * | |
922 | * set std pointed by std_id on external subdev by calling it using | |
923 | * v4l2_device_call_until_err | |
924 | * | |
925 | * Return 0 on success, error code otherwise | |
926 | */ | |
314527ac | 927 | static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id) |
622897da MH |
928 | { |
929 | struct vpfe_video_device *video = video_drvdata(file); | |
930 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
931 | struct vpfe_ext_subdev_info *sdinfo; | |
932 | int ret; | |
933 | ||
934 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n"); | |
935 | ||
936 | /* Call decoder driver function to set the standard */ | |
937 | ret = mutex_lock_interruptible(&video->lock); | |
938 | if (ret) | |
939 | return ret; | |
940 | sdinfo = video->current_ext_subdev; | |
941 | /* If streaming is started, return device busy error */ | |
942 | if (video->started) { | |
943 | v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n"); | |
944 | ret = -EBUSY; | |
945 | goto unlock_out; | |
946 | } | |
947 | ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, | |
314527ac | 948 | core, s_std, std_id); |
622897da MH |
949 | if (ret < 0) { |
950 | v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n"); | |
951 | video->stdid = V4L2_STD_UNKNOWN; | |
952 | goto unlock_out; | |
953 | } | |
314527ac | 954 | video->stdid = std_id; |
622897da MH |
955 | unlock_out: |
956 | mutex_unlock(&video->lock); | |
957 | return ret; | |
958 | } | |
959 | ||
960 | static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *tvnorm) | |
961 | { | |
962 | struct vpfe_video_device *video = video_drvdata(file); | |
963 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
964 | ||
965 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n"); | |
966 | *tvnorm = video->stdid; | |
967 | return 0; | |
968 | } | |
969 | ||
970 | /* | |
971 | * vpfe_enum_dv_timings() - enumerate dv_timings which are supported by | |
972 | * to external subdev | |
973 | * @file: file pointer | |
974 | * @priv: void pointer | |
975 | * @timings: pointer to v4l2_enum_dv_timings structure | |
976 | * | |
977 | * enum dv_timings's which are supported by external subdev through | |
978 | * v4l2_subdev_call | |
979 | * | |
980 | * Return 0 on success, error code otherwise | |
981 | */ | |
982 | static int | |
983 | vpfe_enum_dv_timings(struct file *file, void *fh, | |
984 | struct v4l2_enum_dv_timings *timings) | |
985 | { | |
986 | struct vpfe_video_device *video = video_drvdata(file); | |
987 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
988 | struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; | |
989 | ||
990 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_dv_timings\n"); | |
991 | return v4l2_subdev_call(subdev, video, enum_dv_timings, timings); | |
992 | } | |
993 | ||
994 | /* | |
995 | * vpfe_query_dv_timings() - query the dv_timings which is being input | |
996 | * to external subdev | |
997 | * @file: file pointer | |
998 | * @priv: void pointer | |
999 | * @timings: pointer to v4l2_dv_timings structure | |
1000 | * | |
1001 | * get dv_timings which is being input on external subdev through | |
1002 | * v4l2_subdev_call | |
1003 | * | |
1004 | * Return 0 on success, error code otherwise | |
1005 | */ | |
1006 | static int | |
1007 | vpfe_query_dv_timings(struct file *file, void *fh, | |
1008 | struct v4l2_dv_timings *timings) | |
1009 | { | |
1010 | struct vpfe_video_device *video = video_drvdata(file); | |
1011 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1012 | struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; | |
1013 | ||
1014 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_query_dv_timings\n"); | |
1015 | return v4l2_subdev_call(subdev, video, query_dv_timings, timings); | |
1016 | } | |
1017 | ||
1018 | /* | |
4bd3bb71 | 1019 | * vpfe_s_dv_timings() - set dv_timings on external subdev |
622897da MH |
1020 | * @file: file pointer |
1021 | * @priv: void pointer | |
1022 | * @timings: pointer to v4l2_dv_timings structure | |
1023 | * | |
4bd3bb71 | 1024 | * set dv_timings pointed by timings on external subdev through |
622897da MH |
1025 | * v4l2_device_call_until_err, this configures amplifier also |
1026 | * | |
1027 | * Return 0 on success, error code otherwise | |
1028 | */ | |
1029 | static int | |
1030 | vpfe_s_dv_timings(struct file *file, void *fh, | |
1031 | struct v4l2_dv_timings *timings) | |
1032 | { | |
1033 | struct vpfe_video_device *video = video_drvdata(file); | |
1034 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1035 | ||
1036 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_dv_timings\n"); | |
1037 | ||
1038 | video->stdid = V4L2_STD_UNKNOWN; | |
1039 | return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, | |
1040 | video->current_ext_subdev->grp_id, | |
1041 | video, s_dv_timings, timings); | |
1042 | } | |
1043 | ||
1044 | /* | |
4bd3bb71 | 1045 | * vpfe_g_dv_timings() - get dv_timings which is set on external subdev |
622897da MH |
1046 | * @file: file pointer |
1047 | * @priv: void pointer | |
1048 | * @timings: pointer to v4l2_dv_timings structure | |
1049 | * | |
4bd3bb71 | 1050 | * get dv_timings which is set on external subdev through |
622897da MH |
1051 | * v4l2_subdev_call |
1052 | * | |
1053 | * Return 0 on success, error code otherwise | |
1054 | */ | |
1055 | static int | |
1056 | vpfe_g_dv_timings(struct file *file, void *fh, | |
1057 | struct v4l2_dv_timings *timings) | |
1058 | { | |
1059 | struct vpfe_video_device *video = video_drvdata(file); | |
1060 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1061 | struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; | |
1062 | ||
1063 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_dv_timings\n"); | |
1064 | return v4l2_subdev_call(subdev, video, g_dv_timings, timings); | |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * Videobuf operations | |
1069 | */ | |
1070 | /* | |
1071 | * vpfe_buffer_queue_setup : Callback function for buffer setup. | |
1072 | * @vq: vb2_queue ptr | |
1073 | * @fmt: v4l2 format | |
1074 | * @nbuffers: ptr to number of buffers requested by application | |
1075 | * @nplanes:: contains number of distinct video planes needed to hold a frame | |
1076 | * @sizes[]: contains the size (in bytes) of each plane. | |
1077 | * @alloc_ctxs: ptr to allocation context | |
1078 | * | |
1079 | * This callback function is called when reqbuf() is called to adjust | |
1080 | * the buffer nbuffers and buffer size | |
1081 | */ | |
1082 | static int | |
1083 | vpfe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, | |
1084 | unsigned int *nbuffers, unsigned int *nplanes, | |
1085 | unsigned int sizes[], void *alloc_ctxs[]) | |
1086 | { | |
1087 | struct vpfe_fh *fh = vb2_get_drv_priv(vq); | |
1088 | struct vpfe_video_device *video = fh->video; | |
1089 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1090 | struct vpfe_pipeline *pipe = &video->pipe; | |
1091 | unsigned long size; | |
1092 | ||
1093 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue_setup\n"); | |
1094 | size = video->fmt.fmt.pix.sizeimage; | |
1095 | ||
1096 | if (vpfe_dev->video_limit) { | |
1097 | while (size * *nbuffers > vpfe_dev->video_limit) | |
1098 | (*nbuffers)--; | |
1099 | } | |
1100 | if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) { | |
1101 | if (*nbuffers < MIN_NUM_BUFFERS) | |
1102 | *nbuffers = MIN_NUM_BUFFERS; | |
1103 | } | |
1104 | *nplanes = 1; | |
1105 | sizes[0] = size; | |
1106 | alloc_ctxs[0] = video->alloc_ctx; | |
1107 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, | |
1108 | "nbuffers=%d, size=%lu\n", *nbuffers, size); | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | /* | |
1113 | * vpfe_buffer_prepare : callback function for buffer prepare | |
1114 | * @vb: ptr to vb2_buffer | |
1115 | * | |
1116 | * This is the callback function for buffer prepare when vb2_qbuf() | |
1117 | * function is called. The buffer is prepared and user space virtual address | |
1118 | * or user address is converted into physical address | |
1119 | */ | |
1120 | static int vpfe_buffer_prepare(struct vb2_buffer *vb) | |
1121 | { | |
1122 | struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); | |
1123 | struct vpfe_video_device *video = fh->video; | |
1124 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1125 | unsigned long addr; | |
1126 | ||
1127 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n"); | |
1128 | ||
1129 | if (vb->state != VB2_BUF_STATE_ACTIVE && | |
1130 | vb->state != VB2_BUF_STATE_PREPARED) | |
1131 | return 0; | |
1132 | ||
1133 | /* Initialize buffer */ | |
1134 | vb2_set_plane_payload(vb, 0, video->fmt.fmt.pix.sizeimage); | |
1135 | if (vb2_plane_vaddr(vb, 0) && | |
1136 | vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) | |
1137 | return -EINVAL; | |
1138 | ||
1139 | addr = vb2_dma_contig_plane_dma_addr(vb, 0); | |
1140 | /* Make sure user addresses are aligned to 32 bytes */ | |
1141 | if (!ALIGN(addr, 32)) | |
1142 | return -EINVAL; | |
1143 | ||
1144 | return 0; | |
1145 | } | |
1146 | ||
1147 | static void vpfe_buffer_queue(struct vb2_buffer *vb) | |
1148 | { | |
1149 | /* Get the file handle object and device object */ | |
1150 | struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); | |
1151 | struct vpfe_video_device *video = fh->video; | |
1152 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1153 | struct vpfe_pipeline *pipe = &video->pipe; | |
1154 | struct vpfe_cap_buffer *buf = container_of(vb, | |
1155 | struct vpfe_cap_buffer, vb); | |
1156 | unsigned long flags; | |
1157 | unsigned long empty; | |
1158 | unsigned long addr; | |
1159 | ||
1160 | spin_lock_irqsave(&video->dma_queue_lock, flags); | |
1161 | empty = list_empty(&video->dma_queue); | |
1162 | /* add the buffer to the DMA queue */ | |
1163 | list_add_tail(&buf->list, &video->dma_queue); | |
1164 | spin_unlock_irqrestore(&video->dma_queue_lock, flags); | |
1165 | /* this case happens in case of single shot */ | |
1166 | if (empty && video->started && pipe->state == | |
1167 | VPFE_PIPELINE_STREAM_SINGLESHOT && | |
1168 | video->state == VPFE_VIDEO_BUFFER_NOT_QUEUED) { | |
1169 | spin_lock(&video->dma_queue_lock); | |
1170 | addr = vpfe_video_get_next_buffer(video); | |
1171 | video->ops->queue(vpfe_dev, addr); | |
1172 | ||
1173 | video->state = VPFE_VIDEO_BUFFER_QUEUED; | |
1174 | spin_unlock(&video->dma_queue_lock); | |
1175 | ||
1176 | /* enable h/w each time in single shot */ | |
1177 | if (vpfe_video_is_pipe_ready(pipe)) | |
1178 | vpfe_pipeline_set_stream(pipe, | |
1179 | VPFE_PIPELINE_STREAM_SINGLESHOT); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /* vpfe_start_capture() - start streaming on all the subdevs */ | |
1184 | static int vpfe_start_capture(struct vpfe_video_device *video) | |
1185 | { | |
1186 | struct vpfe_pipeline *pipe = &video->pipe; | |
1187 | int ret = 0; | |
1188 | ||
1189 | video->started = 1; | |
1190 | if (vpfe_video_is_pipe_ready(pipe)) | |
1191 | ret = vpfe_pipeline_set_stream(pipe, pipe->state); | |
1192 | ||
1193 | return ret; | |
1194 | } | |
1195 | ||
1196 | static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) | |
1197 | { | |
1198 | struct vpfe_fh *fh = vb2_get_drv_priv(vq); | |
1199 | struct vpfe_video_device *video = fh->video; | |
1200 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1201 | unsigned long addr; | |
1202 | int ret; | |
1203 | ||
1204 | ret = mutex_lock_interruptible(&video->lock); | |
1205 | if (ret) | |
1206 | goto streamoff; | |
1207 | ||
1208 | /* Get the next frame from the buffer queue */ | |
1209 | video->cur_frm = video->next_frm = | |
1210 | list_entry(video->dma_queue.next, struct vpfe_cap_buffer, list); | |
1211 | /* Remove buffer from the buffer queue */ | |
1212 | list_del(&video->cur_frm->list); | |
1213 | /* Mark state of the current frame to active */ | |
1214 | video->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE; | |
1215 | /* Initialize field_id and started member */ | |
1216 | video->field_id = 0; | |
1217 | addr = vb2_dma_contig_plane_dma_addr(&video->cur_frm->vb, 0); | |
1218 | video->ops->queue(vpfe_dev, addr); | |
1219 | video->state = VPFE_VIDEO_BUFFER_QUEUED; | |
1220 | ||
1221 | ret = vpfe_start_capture(video); | |
1222 | if (ret) | |
1223 | goto unlock_out; | |
1224 | ||
1225 | mutex_unlock(&video->lock); | |
1226 | ||
1227 | return ret; | |
1228 | unlock_out: | |
1229 | mutex_unlock(&video->lock); | |
1230 | streamoff: | |
1231 | ret = vb2_streamoff(&video->buffer_queue, video->buffer_queue.type); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | static int vpfe_buffer_init(struct vb2_buffer *vb) | |
1236 | { | |
1237 | struct vpfe_cap_buffer *buf = container_of(vb, | |
1238 | struct vpfe_cap_buffer, vb); | |
1239 | ||
1240 | INIT_LIST_HEAD(&buf->list); | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | /* abort streaming and wait for last buffer */ | |
1245 | static int vpfe_stop_streaming(struct vb2_queue *vq) | |
1246 | { | |
1247 | struct vpfe_fh *fh = vb2_get_drv_priv(vq); | |
1248 | struct vpfe_video_device *video = fh->video; | |
1249 | ||
1250 | if (!vb2_is_streaming(vq)) | |
1251 | return 0; | |
1252 | /* release all active buffers */ | |
1253 | while (!list_empty(&video->dma_queue)) { | |
1254 | video->next_frm = list_entry(video->dma_queue.next, | |
1255 | struct vpfe_cap_buffer, list); | |
1256 | list_del(&video->next_frm->list); | |
1257 | vb2_buffer_done(&video->next_frm->vb, VB2_BUF_STATE_ERROR); | |
1258 | } | |
1259 | return 0; | |
1260 | } | |
1261 | ||
1262 | static void vpfe_buf_cleanup(struct vb2_buffer *vb) | |
1263 | { | |
1264 | struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); | |
1265 | struct vpfe_video_device *video = fh->video; | |
1266 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1267 | struct vpfe_cap_buffer *buf = container_of(vb, | |
1268 | struct vpfe_cap_buffer, vb); | |
1269 | ||
1270 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buf_cleanup\n"); | |
1271 | if (vb->state == VB2_BUF_STATE_ACTIVE) | |
1272 | list_del_init(&buf->list); | |
1273 | } | |
1274 | ||
1275 | static struct vb2_ops video_qops = { | |
1276 | .queue_setup = vpfe_buffer_queue_setup, | |
1277 | .buf_init = vpfe_buffer_init, | |
1278 | .buf_prepare = vpfe_buffer_prepare, | |
1279 | .start_streaming = vpfe_start_streaming, | |
1280 | .stop_streaming = vpfe_stop_streaming, | |
1281 | .buf_cleanup = vpfe_buf_cleanup, | |
1282 | .buf_queue = vpfe_buffer_queue, | |
1283 | }; | |
1284 | ||
1285 | /* | |
1286 | * vpfe_reqbufs() - supported REQBUF only once opening | |
1287 | * the device. | |
1288 | */ | |
1289 | static int vpfe_reqbufs(struct file *file, void *priv, | |
1290 | struct v4l2_requestbuffers *req_buf) | |
1291 | { | |
1292 | struct vpfe_video_device *video = video_drvdata(file); | |
1293 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1294 | struct vpfe_fh *fh = file->private_data; | |
1295 | struct vb2_queue *q; | |
1296 | int ret; | |
1297 | ||
1298 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n"); | |
1299 | ||
1300 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type && | |
1301 | V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) { | |
1302 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n"); | |
1303 | return -EINVAL; | |
1304 | } | |
1305 | ||
1306 | ret = mutex_lock_interruptible(&video->lock); | |
1307 | if (ret) | |
1308 | return ret; | |
1309 | ||
1310 | if (video->io_usrs != 0) { | |
1311 | v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n"); | |
1312 | ret = -EBUSY; | |
1313 | goto unlock_out; | |
1314 | } | |
1315 | video->memory = req_buf->memory; | |
1316 | ||
1317 | /* Initialize videobuf2 queue as per the buffer type */ | |
1318 | video->alloc_ctx = vb2_dma_contig_init_ctx(vpfe_dev->pdev); | |
1319 | if (IS_ERR(video->alloc_ctx)) { | |
1320 | v4l2_err(&vpfe_dev->v4l2_dev, "Failed to get the context\n"); | |
1321 | return PTR_ERR(video->alloc_ctx); | |
1322 | } | |
1323 | ||
1324 | q = &video->buffer_queue; | |
1325 | q->type = req_buf->type; | |
1326 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
1327 | q->drv_priv = fh; | |
b3379c62 | 1328 | q->min_buffers_needed = 1; |
622897da MH |
1329 | q->ops = &video_qops; |
1330 | q->mem_ops = &vb2_dma_contig_memops; | |
1331 | q->buf_struct_size = sizeof(struct vpfe_cap_buffer); | |
1332 | ||
1333 | ret = vb2_queue_init(q); | |
1334 | if (ret) { | |
1335 | v4l2_err(&vpfe_dev->v4l2_dev, "vb2_queue_init() failed\n"); | |
1336 | vb2_dma_contig_cleanup_ctx(vpfe_dev->pdev); | |
1337 | return ret; | |
1338 | } | |
1339 | ||
1340 | fh->io_allowed = 1; | |
1341 | video->io_usrs = 1; | |
1342 | INIT_LIST_HEAD(&video->dma_queue); | |
1343 | ret = vb2_reqbufs(&video->buffer_queue, req_buf); | |
1344 | ||
1345 | unlock_out: | |
1346 | mutex_unlock(&video->lock); | |
1347 | return ret; | |
1348 | } | |
1349 | ||
1350 | /* | |
1351 | * vpfe_querybuf() - query buffers for exchange | |
1352 | */ | |
1353 | static int vpfe_querybuf(struct file *file, void *priv, | |
1354 | struct v4l2_buffer *buf) | |
1355 | { | |
1356 | struct vpfe_video_device *video = video_drvdata(file); | |
1357 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1358 | ||
1359 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n"); | |
1360 | ||
1361 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type && | |
1362 | V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) { | |
1363 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); | |
1364 | return -EINVAL; | |
1365 | } | |
1366 | ||
1367 | if (video->memory != V4L2_MEMORY_MMAP) { | |
1368 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n"); | |
1369 | return -EINVAL; | |
1370 | } | |
1371 | ||
1372 | /* Call vb2_querybuf to get information */ | |
1373 | return vb2_querybuf(&video->buffer_queue, buf); | |
1374 | } | |
1375 | ||
1376 | /* | |
1377 | * vpfe_qbuf() - queue buffers for capture or processing | |
1378 | */ | |
1379 | static int vpfe_qbuf(struct file *file, void *priv, | |
1380 | struct v4l2_buffer *p) | |
1381 | { | |
1382 | struct vpfe_video_device *video = video_drvdata(file); | |
1383 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1384 | struct vpfe_fh *fh = file->private_data; | |
1385 | ||
1386 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n"); | |
1387 | ||
1388 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type && | |
1389 | V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) { | |
1390 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); | |
1391 | return -EINVAL; | |
1392 | } | |
1393 | /* | |
1394 | * If this file handle is not allowed to do IO, | |
1395 | * return error | |
1396 | */ | |
1397 | if (!fh->io_allowed) { | |
1398 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); | |
1399 | return -EACCES; | |
1400 | } | |
1401 | ||
1402 | return vb2_qbuf(&video->buffer_queue, p); | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * vpfe_dqbuf() - deque buffer which is done with processing | |
1407 | */ | |
1408 | static int vpfe_dqbuf(struct file *file, void *priv, | |
1409 | struct v4l2_buffer *buf) | |
1410 | { | |
1411 | struct vpfe_video_device *video = video_drvdata(file); | |
1412 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1413 | ||
1414 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n"); | |
1415 | ||
1416 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type && | |
1417 | V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) { | |
1418 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); | |
1419 | return -EINVAL; | |
1420 | } | |
1421 | ||
1422 | return vb2_dqbuf(&video->buffer_queue, | |
1423 | buf, (file->f_flags & O_NONBLOCK)); | |
1424 | } | |
1425 | ||
1426 | /* | |
4bd3bb71 | 1427 | * vpfe_streamon() - start streaming |
622897da MH |
1428 | * @file: file pointer |
1429 | * @priv: void pointer | |
1430 | * @buf_type: enum v4l2_buf_type | |
1431 | * | |
1432 | * queue buffer onto hardware for capture/processing and | |
1433 | * start all the subdevs which are in media chain | |
1434 | * | |
1435 | * Return 0 on success, error code otherwise | |
1436 | */ | |
1437 | static int vpfe_streamon(struct file *file, void *priv, | |
1438 | enum v4l2_buf_type buf_type) | |
1439 | { | |
1440 | struct vpfe_video_device *video = video_drvdata(file); | |
1441 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1442 | struct vpfe_pipeline *pipe = &video->pipe; | |
1443 | struct vpfe_fh *fh = file->private_data; | |
1444 | struct vpfe_ext_subdev_info *sdinfo; | |
1445 | int ret = -EINVAL; | |
1446 | ||
1447 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n"); | |
1448 | ||
1449 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type && | |
1450 | V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) { | |
1451 | v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); | |
1452 | return ret; | |
1453 | } | |
1454 | /* If file handle is not allowed IO, return error */ | |
1455 | if (!fh->io_allowed) { | |
1456 | v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); | |
1457 | return -EACCES; | |
1458 | } | |
1459 | sdinfo = video->current_ext_subdev; | |
1460 | /* If buffer queue is empty, return error */ | |
1461 | if (list_empty(&video->buffer_queue.queued_list)) { | |
1462 | v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n"); | |
1463 | return -EIO; | |
1464 | } | |
1465 | /* Validate the pipeline */ | |
1466 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE == buf_type) { | |
1467 | ret = vpfe_video_validate_pipeline(pipe); | |
1468 | if (ret < 0) | |
1469 | return ret; | |
1470 | } | |
1471 | /* Call vb2_streamon to start streaming */ | |
1472 | return vb2_streamon(&video->buffer_queue, buf_type); | |
1473 | } | |
1474 | ||
1475 | /* | |
4bd3bb71 | 1476 | * vpfe_streamoff() - stop streaming |
622897da MH |
1477 | * @file: file pointer |
1478 | * @priv: void pointer | |
1479 | * @buf_type: enum v4l2_buf_type | |
1480 | * | |
1481 | * stop all the subdevs which are in media chain | |
1482 | * | |
1483 | * Return 0 on success, error code otherwise | |
1484 | */ | |
1485 | static int vpfe_streamoff(struct file *file, void *priv, | |
1486 | enum v4l2_buf_type buf_type) | |
1487 | { | |
1488 | struct vpfe_video_device *video = video_drvdata(file); | |
1489 | struct vpfe_device *vpfe_dev = video->vpfe_dev; | |
1490 | struct vpfe_fh *fh = file->private_data; | |
1491 | int ret = 0; | |
1492 | ||
1493 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n"); | |
1494 | ||
1495 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE && | |
1496 | buf_type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { | |
1497 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "Invalid buf type\n"); | |
1498 | return -EINVAL; | |
1499 | } | |
1500 | ||
1501 | /* If io is allowed for this file handle, return error */ | |
1502 | if (!fh->io_allowed) { | |
1503 | v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "fh->io_allowed\n"); | |
1504 | return -EACCES; | |
1505 | } | |
1506 | ||
1507 | /* If streaming is not started, return error */ | |
1508 | if (!video->started) { | |
1509 | v4l2_err(&vpfe_dev->v4l2_dev, "device is not started\n"); | |
1510 | return -EINVAL; | |
1511 | } | |
1512 | ||
1513 | ret = mutex_lock_interruptible(&video->lock); | |
1514 | if (ret) | |
1515 | return ret; | |
1516 | ||
1517 | vpfe_stop_capture(video); | |
1518 | ret = vb2_streamoff(&video->buffer_queue, buf_type); | |
1519 | mutex_unlock(&video->lock); | |
1520 | ||
1521 | return ret; | |
1522 | } | |
1523 | ||
1524 | /* vpfe capture ioctl operations */ | |
1525 | static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { | |
1526 | .vidioc_querycap = vpfe_querycap, | |
1527 | .vidioc_g_fmt_vid_cap = vpfe_g_fmt, | |
1528 | .vidioc_s_fmt_vid_cap = vpfe_s_fmt, | |
1529 | .vidioc_try_fmt_vid_cap = vpfe_try_fmt, | |
1530 | .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt, | |
1531 | .vidioc_g_fmt_vid_out = vpfe_g_fmt, | |
1532 | .vidioc_s_fmt_vid_out = vpfe_s_fmt, | |
1533 | .vidioc_try_fmt_vid_out = vpfe_try_fmt, | |
1534 | .vidioc_enum_fmt_vid_out = vpfe_enum_fmt, | |
1535 | .vidioc_enum_input = vpfe_enum_input, | |
1536 | .vidioc_g_input = vpfe_g_input, | |
1537 | .vidioc_s_input = vpfe_s_input, | |
1538 | .vidioc_querystd = vpfe_querystd, | |
1539 | .vidioc_s_std = vpfe_s_std, | |
1540 | .vidioc_g_std = vpfe_g_std, | |
1541 | .vidioc_enum_dv_timings = vpfe_enum_dv_timings, | |
1542 | .vidioc_query_dv_timings = vpfe_query_dv_timings, | |
1543 | .vidioc_s_dv_timings = vpfe_s_dv_timings, | |
1544 | .vidioc_g_dv_timings = vpfe_g_dv_timings, | |
1545 | .vidioc_reqbufs = vpfe_reqbufs, | |
1546 | .vidioc_querybuf = vpfe_querybuf, | |
1547 | .vidioc_qbuf = vpfe_qbuf, | |
1548 | .vidioc_dqbuf = vpfe_dqbuf, | |
1549 | .vidioc_streamon = vpfe_streamon, | |
1550 | .vidioc_streamoff = vpfe_streamoff, | |
1551 | }; | |
1552 | ||
1553 | /* VPFE video init function */ | |
1554 | int vpfe_video_init(struct vpfe_video_device *video, const char *name) | |
1555 | { | |
1556 | const char *direction; | |
1557 | int ret; | |
1558 | ||
1559 | switch (video->type) { | |
1560 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
1561 | direction = "output"; | |
1562 | video->pad.flags = MEDIA_PAD_FL_SINK; | |
1563 | video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1564 | break; | |
1565 | ||
1566 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
1567 | direction = "input"; | |
1568 | video->pad.flags = MEDIA_PAD_FL_SOURCE; | |
1569 | video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
1570 | break; | |
1571 | ||
1572 | default: | |
1573 | return -EINVAL; | |
1574 | } | |
1575 | /* Initialize field of video device */ | |
1576 | video->video_dev.release = video_device_release; | |
1577 | video->video_dev.fops = &vpfe_fops; | |
1578 | video->video_dev.ioctl_ops = &vpfe_ioctl_ops; | |
1579 | video->video_dev.minor = -1; | |
1580 | video->video_dev.tvnorms = 0; | |
1581 | snprintf(video->video_dev.name, sizeof(video->video_dev.name), | |
1582 | "DAVINCI VIDEO %s %s", name, direction); | |
1583 | ||
1584 | /* Initialize prio member of device object */ | |
1585 | v4l2_prio_init(&video->prio); | |
1586 | spin_lock_init(&video->irqlock); | |
1587 | spin_lock_init(&video->dma_queue_lock); | |
1588 | mutex_init(&video->lock); | |
1589 | ret = media_entity_init(&video->video_dev.entity, | |
1590 | 1, &video->pad, 0); | |
1591 | if (ret < 0) | |
1592 | return ret; | |
1593 | ||
1594 | video_set_drvdata(&video->video_dev, video); | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
1599 | /* vpfe video device register function */ | |
1600 | int vpfe_video_register(struct vpfe_video_device *video, | |
1601 | struct v4l2_device *vdev) | |
1602 | { | |
1603 | int ret; | |
1604 | ||
1605 | video->video_dev.v4l2_dev = vdev; | |
1606 | ||
1607 | ret = video_register_device(&video->video_dev, VFL_TYPE_GRABBER, -1); | |
1608 | if (ret < 0) | |
1609 | pr_err("%s: could not register video device (%d)\n", | |
1610 | __func__, ret); | |
1611 | return ret; | |
1612 | } | |
1613 | ||
1614 | /* vpfe video device unregister function */ | |
1615 | void vpfe_video_unregister(struct vpfe_video_device *video) | |
1616 | { | |
1617 | if (video_is_registered(&video->video_dev)) { | |
622897da | 1618 | video_unregister_device(&video->video_dev); |
7bb151b2 | 1619 | media_entity_cleanup(&video->video_dev.entity); |
622897da MH |
1620 | } |
1621 | } |