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14#include <linux/list.h>
15#include <linux/module.h>
16#include <linux/mutex.h>
17#include <linux/slab.h>
18#include <linux/v4l2-mediabus.h>
19#include <linux/videodev2.h>
20#include <linux/wait.h>
21
22#include <media/media-entity.h>
23#include <media/v4l2-dev.h>
24#include <media/v4l2-fh.h>
25#include <media/v4l2-ioctl.h>
26#include <media/v4l2-subdev.h>
27#include <media/videobuf2-v4l2.h>
28#include <media/videobuf2-dma-contig.h>
29
30#include "vsp1.h"
31#include "vsp1_bru.h"
32#include "vsp1_dl.h"
33#include "vsp1_entity.h"
34#include "vsp1_hgo.h"
35#include "vsp1_hgt.h"
36#include "vsp1_pipe.h"
37#include "vsp1_rwpf.h"
38#include "vsp1_uds.h"
39#include "vsp1_video.h"
40
41#define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
42#define VSP1_VIDEO_DEF_WIDTH 1024
43#define VSP1_VIDEO_DEF_HEIGHT 768
44
45#define VSP1_VIDEO_MIN_WIDTH 2U
46#define VSP1_VIDEO_MAX_WIDTH 8190U
47#define VSP1_VIDEO_MIN_HEIGHT 2U
48#define VSP1_VIDEO_MAX_HEIGHT 8190U
49
50
51
52
53
54static struct v4l2_subdev *
55vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
56{
57 struct media_pad *remote;
58
59 remote = media_entity_remote_pad(local);
60 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
61 return NULL;
62
63 if (pad)
64 *pad = remote->index;
65
66 return media_entity_to_v4l2_subdev(remote->entity);
67}
68
69static int vsp1_video_verify_format(struct vsp1_video *video)
70{
71 struct v4l2_subdev_format fmt;
72 struct v4l2_subdev *subdev;
73 int ret;
74
75 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
76 if (subdev == NULL)
77 return -EINVAL;
78
79 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
80 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
81 if (ret < 0)
82 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
83
84 if (video->rwpf->fmtinfo->mbus != fmt.format.code ||
85 video->rwpf->format.height != fmt.format.height ||
86 video->rwpf->format.width != fmt.format.width)
87 return -EINVAL;
88
89 return 0;
90}
91
92static int __vsp1_video_try_format(struct vsp1_video *video,
93 struct v4l2_pix_format_mplane *pix,
94 const struct vsp1_format_info **fmtinfo)
95{
96 static const u32 xrgb_formats[][2] = {
97 { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 },
98 { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 },
99 { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 },
100 { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 },
101 };
102
103 const struct vsp1_format_info *info;
104 unsigned int width = pix->width;
105 unsigned int height = pix->height;
106 unsigned int i;
107
108
109
110
111
112
113 for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) {
114 if (xrgb_formats[i][0] == pix->pixelformat) {
115 pix->pixelformat = xrgb_formats[i][1];
116 break;
117 }
118 }
119
120
121
122
123
124 info = vsp1_get_format_info(video->vsp1, pix->pixelformat);
125 if (info == NULL)
126 info = vsp1_get_format_info(video->vsp1, VSP1_VIDEO_DEF_FORMAT);
127
128 pix->pixelformat = info->fourcc;
129 pix->colorspace = V4L2_COLORSPACE_SRGB;
130 pix->field = V4L2_FIELD_NONE;
131
132 if (info->fourcc == V4L2_PIX_FMT_HSV24 ||
133 info->fourcc == V4L2_PIX_FMT_HSV32)
134 pix->hsv_enc = V4L2_HSV_ENC_256;
135
136 memset(pix->reserved, 0, sizeof(pix->reserved));
137
138
139 width = round_down(width, info->hsub);
140 height = round_down(height, info->vsub);
141
142
143 pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH);
144 pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT,
145 VSP1_VIDEO_MAX_HEIGHT);
146
147
148
149
150
151
152 for (i = 0; i < min(info->planes, 2U); ++i) {
153 unsigned int hsub = i > 0 ? info->hsub : 1;
154 unsigned int vsub = i > 0 ? info->vsub : 1;
155 unsigned int align = 128;
156 unsigned int bpl;
157
158 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
159 pix->width / hsub * info->bpp[i] / 8,
160 round_down(65535U, align));
161
162 pix->plane_fmt[i].bytesperline = round_up(bpl, align);
163 pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
164 * pix->height / vsub;
165 }
166
167 if (info->planes == 3) {
168
169 pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
170 pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
171 }
172
173 pix->num_planes = info->planes;
174
175 if (fmtinfo)
176 *fmtinfo = info;
177
178 return 0;
179}
180
181
182
183
184
185
186
187
188
189
190
191
192
193static void vsp1_video_calculate_partition(struct vsp1_pipeline *pipe,
194 struct vsp1_partition *partition,
195 unsigned int div_size,
196 unsigned int index)
197{
198 const struct v4l2_mbus_framefmt *format;
199 struct vsp1_partition_window window;
200 unsigned int modulus;
201
202
203
204
205
206 format = vsp1_entity_get_pad_format(&pipe->output->entity,
207 pipe->output->entity.config,
208 RWPF_PAD_SINK);
209
210
211 if (pipe->partitions <= 1) {
212 window.left = 0;
213 window.width = format->width;
214
215 vsp1_pipeline_propagate_partition(pipe, partition, index,
216 &window);
217 return;
218 }
219
220
221 window.left = index * div_size;
222 window.width = div_size;
223
224 modulus = format->width % div_size;
225
226
227
228
229
230
231
232
233
234
235 if (modulus) {
236
237
238
239
240 unsigned int partitions = pipe->partitions - 1;
241
242 if (modulus < div_size / 2) {
243 if (index == partitions - 1) {
244
245 window.width = div_size / 2;
246 } else if (index == partitions) {
247
248 window.width = (div_size / 2) + modulus;
249 window.left -= div_size / 2;
250 }
251 } else if (index == partitions) {
252 window.width = modulus;
253 }
254 }
255
256 vsp1_pipeline_propagate_partition(pipe, partition, index, &window);
257}
258
259static int vsp1_video_pipeline_setup_partitions(struct vsp1_pipeline *pipe)
260{
261 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
262 const struct v4l2_mbus_framefmt *format;
263 struct vsp1_entity *entity;
264 unsigned int div_size;
265 unsigned int i;
266
267
268
269
270
271 format = vsp1_entity_get_pad_format(&pipe->output->entity,
272 pipe->output->entity.config,
273 RWPF_PAD_SINK);
274 div_size = format->width;
275
276
277
278
279
280 if (vsp1->info->gen == 3) {
281 list_for_each_entry(entity, &pipe->entities, list_pipe) {
282 unsigned int entity_max;
283
284 if (!entity->ops->max_width)
285 continue;
286
287 entity_max = entity->ops->max_width(entity, pipe);
288 if (entity_max)
289 div_size = min(div_size, entity_max);
290 }
291 }
292
293 pipe->partitions = DIV_ROUND_UP(format->width, div_size);
294 pipe->part_table = kcalloc(pipe->partitions, sizeof(*pipe->part_table),
295 GFP_KERNEL);
296 if (!pipe->part_table)
297 return -ENOMEM;
298
299 for (i = 0; i < pipe->partitions; ++i)
300 vsp1_video_calculate_partition(pipe, &pipe->part_table[i],
301 div_size, i);
302
303 return 0;
304}
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324static struct vsp1_vb2_buffer *
325vsp1_video_complete_buffer(struct vsp1_video *video)
326{
327 struct vsp1_pipeline *pipe = video->rwpf->pipe;
328 struct vsp1_vb2_buffer *next = NULL;
329 struct vsp1_vb2_buffer *done;
330 unsigned long flags;
331 unsigned int i;
332
333 spin_lock_irqsave(&video->irqlock, flags);
334
335 if (list_empty(&video->irqqueue)) {
336 spin_unlock_irqrestore(&video->irqlock, flags);
337 return NULL;
338 }
339
340 done = list_first_entry(&video->irqqueue,
341 struct vsp1_vb2_buffer, queue);
342
343
344 if (pipe->lif && list_is_singular(&video->irqqueue)) {
345 spin_unlock_irqrestore(&video->irqlock, flags);
346 return done;
347 }
348
349 list_del(&done->queue);
350
351 if (!list_empty(&video->irqqueue))
352 next = list_first_entry(&video->irqqueue,
353 struct vsp1_vb2_buffer, queue);
354
355 spin_unlock_irqrestore(&video->irqlock, flags);
356
357 done->buf.sequence = pipe->sequence;
358 done->buf.vb2_buf.timestamp = ktime_get_ns();
359 for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
360 vb2_set_plane_payload(&done->buf.vb2_buf, i,
361 vb2_plane_size(&done->buf.vb2_buf, i));
362 vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
363
364 return next;
365}
366
367static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
368 struct vsp1_rwpf *rwpf)
369{
370 struct vsp1_video *video = rwpf->video;
371 struct vsp1_vb2_buffer *buf;
372
373 buf = vsp1_video_complete_buffer(video);
374 if (buf == NULL)
375 return;
376
377 video->rwpf->mem = buf->mem;
378 pipe->buffers_ready |= 1 << video->pipe_index;
379}
380
381static void vsp1_video_pipeline_run_partition(struct vsp1_pipeline *pipe,
382 struct vsp1_dl_list *dl,
383 unsigned int partition)
384{
385 struct vsp1_entity *entity;
386
387 pipe->partition = &pipe->part_table[partition];
388
389 list_for_each_entry(entity, &pipe->entities, list_pipe) {
390 if (entity->ops->configure)
391 entity->ops->configure(entity, pipe, dl,
392 VSP1_ENTITY_PARAMS_PARTITION);
393 }
394}
395
396static void vsp1_video_pipeline_run(struct vsp1_pipeline *pipe)
397{
398 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
399 struct vsp1_entity *entity;
400 unsigned int partition;
401
402 if (!pipe->dl)
403 pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
404
405
406
407
408
409
410 list_for_each_entry(entity, &pipe->entities, list_pipe) {
411 if (entity->ops->configure)
412 entity->ops->configure(entity, pipe, pipe->dl,
413 VSP1_ENTITY_PARAMS_RUNTIME);
414 }
415
416
417 vsp1_video_pipeline_run_partition(pipe, pipe->dl, 0);
418
419
420 for (partition = 1; partition < pipe->partitions; ++partition) {
421 struct vsp1_dl_list *dl;
422
423 dl = vsp1_dl_list_get(pipe->output->dlm);
424
425
426
427
428
429
430 if (!dl) {
431 dev_err(vsp1->dev, "Failed to obtain a dl list. Frame will be incomplete\n");
432 break;
433 }
434
435 vsp1_video_pipeline_run_partition(pipe, dl, partition);
436 vsp1_dl_list_add_chain(pipe->dl, dl);
437 }
438
439
440 vsp1_dl_list_commit(pipe->dl);
441 pipe->dl = NULL;
442
443 vsp1_pipeline_run(pipe);
444}
445
446static void vsp1_video_pipeline_frame_end(struct vsp1_pipeline *pipe,
447 bool completed)
448{
449 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
450 enum vsp1_pipeline_state state;
451 unsigned long flags;
452 unsigned int i;
453
454
455 WARN_ON_ONCE(!completed);
456
457 spin_lock_irqsave(&pipe->irqlock, flags);
458
459
460 for (i = 0; i < vsp1->info->rpf_count; ++i) {
461 if (!pipe->inputs[i])
462 continue;
463
464 vsp1_video_frame_end(pipe, pipe->inputs[i]);
465 }
466
467 vsp1_video_frame_end(pipe, pipe->output);
468
469 state = pipe->state;
470 pipe->state = VSP1_PIPELINE_STOPPED;
471
472
473
474
475
476 if (state == VSP1_PIPELINE_STOPPING)
477 wake_up(&pipe->wq);
478 else if (vsp1_pipeline_ready(pipe))
479 vsp1_video_pipeline_run(pipe);
480
481 spin_unlock_irqrestore(&pipe->irqlock, flags);
482}
483
484static int vsp1_video_pipeline_build_branch(struct vsp1_pipeline *pipe,
485 struct vsp1_rwpf *input,
486 struct vsp1_rwpf *output)
487{
488 struct media_entity_enum ent_enum;
489 struct vsp1_entity *entity;
490 struct media_pad *pad;
491 struct vsp1_bru *bru = NULL;
492 int ret;
493
494 ret = media_entity_enum_init(&ent_enum, &input->entity.vsp1->media_dev);
495 if (ret < 0)
496 return ret;
497
498
499
500
501
502
503 pad = vsp1_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
504
505 while (1) {
506 if (pad == NULL) {
507 ret = -EPIPE;
508 goto out;
509 }
510
511
512 if (!is_media_entity_v4l2_subdev(pad->entity)) {
513 ret = -EPIPE;
514 goto out;
515 }
516
517 entity = to_vsp1_entity(
518 media_entity_to_v4l2_subdev(pad->entity));
519
520
521
522
523
524 if (entity->type == VSP1_ENTITY_BRU ||
525 entity->type == VSP1_ENTITY_BRS) {
526
527 if (bru) {
528 ret = -EPIPE;
529 goto out;
530 }
531
532 bru = to_bru(&entity->subdev);
533 bru->inputs[pad->index].rpf = input;
534 input->bru_input = pad->index;
535 }
536
537
538 if (entity->type == VSP1_ENTITY_WPF)
539 break;
540
541
542 if (media_entity_enum_test_and_set(&ent_enum,
543 &entity->subdev.entity)) {
544 ret = -EPIPE;
545 goto out;
546 }
547
548
549 if (entity->type == VSP1_ENTITY_UDS) {
550 if (pipe->uds) {
551 ret = -EPIPE;
552 goto out;
553 }
554
555 pipe->uds = entity;
556 pipe->uds_input = bru ? &bru->entity : &input->entity;
557 }
558
559
560 pad = &entity->pads[entity->source_pad];
561 pad = vsp1_entity_remote_pad(pad);
562 }
563
564
565 if (entity != &output->entity)
566 ret = -EPIPE;
567
568out:
569 media_entity_enum_cleanup(&ent_enum);
570
571 return ret;
572}
573
574static int vsp1_video_pipeline_build(struct vsp1_pipeline *pipe,
575 struct vsp1_video *video)
576{
577 struct media_graph graph;
578 struct media_entity *entity = &video->video.entity;
579 struct media_device *mdev = entity->graph_obj.mdev;
580 unsigned int i;
581 int ret;
582
583
584 ret = media_graph_walk_init(&graph, mdev);
585 if (ret)
586 return ret;
587
588 media_graph_walk_start(&graph, entity);
589
590 while ((entity = media_graph_walk_next(&graph))) {
591 struct v4l2_subdev *subdev;
592 struct vsp1_rwpf *rwpf;
593 struct vsp1_entity *e;
594
595 if (!is_media_entity_v4l2_subdev(entity))
596 continue;
597
598 subdev = media_entity_to_v4l2_subdev(entity);
599 e = to_vsp1_entity(subdev);
600 list_add_tail(&e->list_pipe, &pipe->entities);
601
602 switch (e->type) {
603 case VSP1_ENTITY_RPF:
604 rwpf = to_rwpf(subdev);
605 pipe->inputs[rwpf->entity.index] = rwpf;
606 rwpf->video->pipe_index = ++pipe->num_inputs;
607 rwpf->pipe = pipe;
608 break;
609
610 case VSP1_ENTITY_WPF:
611 rwpf = to_rwpf(subdev);
612 pipe->output = rwpf;
613 rwpf->video->pipe_index = 0;
614 rwpf->pipe = pipe;
615 break;
616
617 case VSP1_ENTITY_LIF:
618 pipe->lif = e;
619 break;
620
621 case VSP1_ENTITY_BRU:
622 case VSP1_ENTITY_BRS:
623 pipe->bru = e;
624 break;
625
626 case VSP1_ENTITY_HGO:
627 pipe->hgo = e;
628 to_hgo(subdev)->histo.pipe = pipe;
629 break;
630
631 case VSP1_ENTITY_HGT:
632 pipe->hgt = e;
633 to_hgt(subdev)->histo.pipe = pipe;
634 break;
635
636 default:
637 break;
638 }
639 }
640
641 media_graph_walk_cleanup(&graph);
642
643
644 if (pipe->num_inputs == 0 || !pipe->output)
645 return -EPIPE;
646
647
648
649
650
651 for (i = 0; i < video->vsp1->info->rpf_count; ++i) {
652 if (!pipe->inputs[i])
653 continue;
654
655 ret = vsp1_video_pipeline_build_branch(pipe, pipe->inputs[i],
656 pipe->output);
657 if (ret < 0)
658 return ret;
659 }
660
661 return 0;
662}
663
664static int vsp1_video_pipeline_init(struct vsp1_pipeline *pipe,
665 struct vsp1_video *video)
666{
667 vsp1_pipeline_init(pipe);
668
669 pipe->frame_end = vsp1_video_pipeline_frame_end;
670
671 return vsp1_video_pipeline_build(pipe, video);
672}
673
674static struct vsp1_pipeline *vsp1_video_pipeline_get(struct vsp1_video *video)
675{
676 struct vsp1_pipeline *pipe;
677 int ret;
678
679
680
681
682
683
684
685 if (!video->rwpf->pipe) {
686 pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);
687 if (!pipe)
688 return ERR_PTR(-ENOMEM);
689
690 ret = vsp1_video_pipeline_init(pipe, video);
691 if (ret < 0) {
692 vsp1_pipeline_reset(pipe);
693 kfree(pipe);
694 return ERR_PTR(ret);
695 }
696 } else {
697 pipe = video->rwpf->pipe;
698 kref_get(&pipe->kref);
699 }
700
701 return pipe;
702}
703
704static void vsp1_video_pipeline_release(struct kref *kref)
705{
706 struct vsp1_pipeline *pipe = container_of(kref, typeof(*pipe), kref);
707
708 vsp1_pipeline_reset(pipe);
709 kfree(pipe);
710}
711
712static void vsp1_video_pipeline_put(struct vsp1_pipeline *pipe)
713{
714 struct media_device *mdev = &pipe->output->entity.vsp1->media_dev;
715
716 mutex_lock(&mdev->graph_mutex);
717 kref_put(&pipe->kref, vsp1_video_pipeline_release);
718 mutex_unlock(&mdev->graph_mutex);
719}
720
721
722
723
724
725static int
726vsp1_video_queue_setup(struct vb2_queue *vq,
727 unsigned int *nbuffers, unsigned int *nplanes,
728 unsigned int sizes[], struct device *alloc_devs[])
729{
730 struct vsp1_video *video = vb2_get_drv_priv(vq);
731 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
732 unsigned int i;
733
734 if (*nplanes) {
735 if (*nplanes != format->num_planes)
736 return -EINVAL;
737
738 for (i = 0; i < *nplanes; i++)
739 if (sizes[i] < format->plane_fmt[i].sizeimage)
740 return -EINVAL;
741 return 0;
742 }
743
744 *nplanes = format->num_planes;
745
746 for (i = 0; i < format->num_planes; ++i)
747 sizes[i] = format->plane_fmt[i].sizeimage;
748
749 return 0;
750}
751
752static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
753{
754 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
755 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
756 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
757 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
758 unsigned int i;
759
760 if (vb->num_planes < format->num_planes)
761 return -EINVAL;
762
763 for (i = 0; i < vb->num_planes; ++i) {
764 buf->mem.addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
765
766 if (vb2_plane_size(vb, i) < format->plane_fmt[i].sizeimage)
767 return -EINVAL;
768 }
769
770 for ( ; i < 3; ++i)
771 buf->mem.addr[i] = 0;
772
773 return 0;
774}
775
776static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
777{
778 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
779 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
780 struct vsp1_pipeline *pipe = video->rwpf->pipe;
781 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
782 unsigned long flags;
783 bool empty;
784
785 spin_lock_irqsave(&video->irqlock, flags);
786 empty = list_empty(&video->irqqueue);
787 list_add_tail(&buf->queue, &video->irqqueue);
788 spin_unlock_irqrestore(&video->irqlock, flags);
789
790 if (!empty)
791 return;
792
793 spin_lock_irqsave(&pipe->irqlock, flags);
794
795 video->rwpf->mem = buf->mem;
796 pipe->buffers_ready |= 1 << video->pipe_index;
797
798 if (vb2_is_streaming(&video->queue) &&
799 vsp1_pipeline_ready(pipe))
800 vsp1_video_pipeline_run(pipe);
801
802 spin_unlock_irqrestore(&pipe->irqlock, flags);
803}
804
805static int vsp1_video_setup_pipeline(struct vsp1_pipeline *pipe)
806{
807 struct vsp1_entity *entity;
808 int ret;
809
810
811 ret = vsp1_video_pipeline_setup_partitions(pipe);
812 if (ret < 0)
813 return ret;
814
815
816 pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
817 if (!pipe->dl)
818 return -ENOMEM;
819
820 if (pipe->uds) {
821 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
822
823
824
825
826
827
828
829
830 if (pipe->uds_input->type == VSP1_ENTITY_BRU ||
831 pipe->uds_input->type == VSP1_ENTITY_BRS) {
832 uds->scale_alpha = false;
833 } else {
834 struct vsp1_rwpf *rpf =
835 to_rwpf(&pipe->uds_input->subdev);
836
837 uds->scale_alpha = rpf->fmtinfo->alpha;
838 }
839 }
840
841 list_for_each_entry(entity, &pipe->entities, list_pipe) {
842 vsp1_entity_route_setup(entity, pipe, pipe->dl);
843
844 if (entity->ops->configure)
845 entity->ops->configure(entity, pipe, pipe->dl,
846 VSP1_ENTITY_PARAMS_INIT);
847 }
848
849 return 0;
850}
851
852static void vsp1_video_cleanup_pipeline(struct vsp1_pipeline *pipe)
853{
854 struct vsp1_video *video = pipe->output->video;
855 struct vsp1_vb2_buffer *buffer;
856 unsigned long flags;
857
858
859 spin_lock_irqsave(&video->irqlock, flags);
860 list_for_each_entry(buffer, &video->irqqueue, queue)
861 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
862 INIT_LIST_HEAD(&video->irqqueue);
863 spin_unlock_irqrestore(&video->irqlock, flags);
864
865
866 mutex_lock(&pipe->lock);
867 kfree(pipe->part_table);
868 pipe->part_table = NULL;
869 mutex_unlock(&pipe->lock);
870}
871
872static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
873{
874 struct vsp1_video *video = vb2_get_drv_priv(vq);
875 struct vsp1_pipeline *pipe = video->rwpf->pipe;
876 bool start_pipeline = false;
877 unsigned long flags;
878 int ret;
879
880 mutex_lock(&pipe->lock);
881 if (pipe->stream_count == pipe->num_inputs) {
882 ret = vsp1_video_setup_pipeline(pipe);
883 if (ret < 0) {
884 mutex_unlock(&pipe->lock);
885 vsp1_video_cleanup_pipeline(pipe);
886 return ret;
887 }
888
889 start_pipeline = true;
890 }
891
892 pipe->stream_count++;
893 mutex_unlock(&pipe->lock);
894
895
896
897
898
899
900
901
902 if (!start_pipeline)
903 return 0;
904
905 spin_lock_irqsave(&pipe->irqlock, flags);
906 if (vsp1_pipeline_ready(pipe))
907 vsp1_video_pipeline_run(pipe);
908 spin_unlock_irqrestore(&pipe->irqlock, flags);
909
910 return 0;
911}
912
913static void vsp1_video_stop_streaming(struct vb2_queue *vq)
914{
915 struct vsp1_video *video = vb2_get_drv_priv(vq);
916 struct vsp1_pipeline *pipe = video->rwpf->pipe;
917 unsigned long flags;
918 int ret;
919
920
921
922
923
924 spin_lock_irqsave(&video->irqlock, flags);
925 pipe->buffers_ready &= ~(1 << video->pipe_index);
926 spin_unlock_irqrestore(&video->irqlock, flags);
927
928 mutex_lock(&pipe->lock);
929 if (--pipe->stream_count == pipe->num_inputs) {
930
931 ret = vsp1_pipeline_stop(pipe);
932 if (ret == -ETIMEDOUT)
933 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
934
935 vsp1_dl_list_put(pipe->dl);
936 pipe->dl = NULL;
937 }
938 mutex_unlock(&pipe->lock);
939
940 media_pipeline_stop(&video->video.entity);
941 vsp1_video_cleanup_pipeline(pipe);
942 vsp1_video_pipeline_put(pipe);
943}
944
945static const struct vb2_ops vsp1_video_queue_qops = {
946 .queue_setup = vsp1_video_queue_setup,
947 .buf_prepare = vsp1_video_buffer_prepare,
948 .buf_queue = vsp1_video_buffer_queue,
949 .wait_prepare = vb2_ops_wait_prepare,
950 .wait_finish = vb2_ops_wait_finish,
951 .start_streaming = vsp1_video_start_streaming,
952 .stop_streaming = vsp1_video_stop_streaming,
953};
954
955
956
957
958
959static int
960vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
961{
962 struct v4l2_fh *vfh = file->private_data;
963 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
964
965 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
966 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
967 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
968
969 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
970 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
971 | V4L2_CAP_STREAMING;
972 else
973 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
974 | V4L2_CAP_STREAMING;
975
976 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
977 strlcpy(cap->card, video->video.name, sizeof(cap->card));
978 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
979 dev_name(video->vsp1->dev));
980
981 return 0;
982}
983
984static int
985vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
986{
987 struct v4l2_fh *vfh = file->private_data;
988 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
989
990 if (format->type != video->queue.type)
991 return -EINVAL;
992
993 mutex_lock(&video->lock);
994 format->fmt.pix_mp = video->rwpf->format;
995 mutex_unlock(&video->lock);
996
997 return 0;
998}
999
1000static int
1001vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
1002{
1003 struct v4l2_fh *vfh = file->private_data;
1004 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1005
1006 if (format->type != video->queue.type)
1007 return -EINVAL;
1008
1009 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
1010}
1011
1012static int
1013vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1014{
1015 struct v4l2_fh *vfh = file->private_data;
1016 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1017 const struct vsp1_format_info *info;
1018 int ret;
1019
1020 if (format->type != video->queue.type)
1021 return -EINVAL;
1022
1023 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1024 if (ret < 0)
1025 return ret;
1026
1027 mutex_lock(&video->lock);
1028
1029 if (vb2_is_busy(&video->queue)) {
1030 ret = -EBUSY;
1031 goto done;
1032 }
1033
1034 video->rwpf->format = format->fmt.pix_mp;
1035 video->rwpf->fmtinfo = info;
1036
1037done:
1038 mutex_unlock(&video->lock);
1039 return ret;
1040}
1041
1042static int
1043vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1044{
1045 struct v4l2_fh *vfh = file->private_data;
1046 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1047 struct media_device *mdev = &video->vsp1->media_dev;
1048 struct vsp1_pipeline *pipe;
1049 int ret;
1050
1051 if (video->queue.owner && video->queue.owner != file->private_data)
1052 return -EBUSY;
1053
1054
1055
1056
1057
1058
1059 mutex_lock(&mdev->graph_mutex);
1060
1061 pipe = vsp1_video_pipeline_get(video);
1062 if (IS_ERR(pipe)) {
1063 mutex_unlock(&mdev->graph_mutex);
1064 return PTR_ERR(pipe);
1065 }
1066
1067 ret = __media_pipeline_start(&video->video.entity, &pipe->pipe);
1068 if (ret < 0) {
1069 mutex_unlock(&mdev->graph_mutex);
1070 goto err_pipe;
1071 }
1072
1073 mutex_unlock(&mdev->graph_mutex);
1074
1075
1076
1077
1078
1079 ret = vsp1_video_verify_format(video);
1080 if (ret < 0)
1081 goto err_stop;
1082
1083
1084 ret = vb2_streamon(&video->queue, type);
1085 if (ret < 0)
1086 goto err_stop;
1087
1088 return 0;
1089
1090err_stop:
1091 media_pipeline_stop(&video->video.entity);
1092err_pipe:
1093 vsp1_video_pipeline_put(pipe);
1094 return ret;
1095}
1096
1097static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1098 .vidioc_querycap = vsp1_video_querycap,
1099 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1100 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1101 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1102 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1103 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1104 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1105 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1106 .vidioc_querybuf = vb2_ioctl_querybuf,
1107 .vidioc_qbuf = vb2_ioctl_qbuf,
1108 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1109 .vidioc_expbuf = vb2_ioctl_expbuf,
1110 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1111 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1112 .vidioc_streamon = vsp1_video_streamon,
1113 .vidioc_streamoff = vb2_ioctl_streamoff,
1114};
1115
1116
1117
1118
1119
1120static int vsp1_video_open(struct file *file)
1121{
1122 struct vsp1_video *video = video_drvdata(file);
1123 struct v4l2_fh *vfh;
1124 int ret = 0;
1125
1126 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1127 if (vfh == NULL)
1128 return -ENOMEM;
1129
1130 v4l2_fh_init(vfh, &video->video);
1131 v4l2_fh_add(vfh);
1132
1133 file->private_data = vfh;
1134
1135 ret = vsp1_device_get(video->vsp1);
1136 if (ret < 0) {
1137 v4l2_fh_del(vfh);
1138 v4l2_fh_exit(vfh);
1139 kfree(vfh);
1140 }
1141
1142 return ret;
1143}
1144
1145static int vsp1_video_release(struct file *file)
1146{
1147 struct vsp1_video *video = video_drvdata(file);
1148 struct v4l2_fh *vfh = file->private_data;
1149
1150 mutex_lock(&video->lock);
1151 if (video->queue.owner == vfh) {
1152 vb2_queue_release(&video->queue);
1153 video->queue.owner = NULL;
1154 }
1155 mutex_unlock(&video->lock);
1156
1157 vsp1_device_put(video->vsp1);
1158
1159 v4l2_fh_release(file);
1160
1161 file->private_data = NULL;
1162
1163 return 0;
1164}
1165
1166static const struct v4l2_file_operations vsp1_video_fops = {
1167 .owner = THIS_MODULE,
1168 .unlocked_ioctl = video_ioctl2,
1169 .open = vsp1_video_open,
1170 .release = vsp1_video_release,
1171 .poll = vb2_fop_poll,
1172 .mmap = vb2_fop_mmap,
1173};
1174
1175
1176
1177
1178
1179struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1,
1180 struct vsp1_rwpf *rwpf)
1181{
1182 struct vsp1_video *video;
1183 const char *direction;
1184 int ret;
1185
1186 video = devm_kzalloc(vsp1->dev, sizeof(*video), GFP_KERNEL);
1187 if (!video)
1188 return ERR_PTR(-ENOMEM);
1189
1190 rwpf->video = video;
1191
1192 video->vsp1 = vsp1;
1193 video->rwpf = rwpf;
1194
1195 if (rwpf->entity.type == VSP1_ENTITY_RPF) {
1196 direction = "input";
1197 video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1198 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1199 video->video.vfl_dir = VFL_DIR_TX;
1200 } else {
1201 direction = "output";
1202 video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1203 video->pad.flags = MEDIA_PAD_FL_SINK;
1204 video->video.vfl_dir = VFL_DIR_RX;
1205 }
1206
1207 mutex_init(&video->lock);
1208 spin_lock_init(&video->irqlock);
1209 INIT_LIST_HEAD(&video->irqqueue);
1210
1211
1212 ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
1213 if (ret < 0)
1214 return ERR_PTR(ret);
1215
1216
1217 rwpf->format.pixelformat = VSP1_VIDEO_DEF_FORMAT;
1218 rwpf->format.width = VSP1_VIDEO_DEF_WIDTH;
1219 rwpf->format.height = VSP1_VIDEO_DEF_HEIGHT;
1220 __vsp1_video_try_format(video, &rwpf->format, &rwpf->fmtinfo);
1221
1222
1223 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1224 video->video.fops = &vsp1_video_fops;
1225 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1226 rwpf->entity.subdev.name, direction);
1227 video->video.vfl_type = VFL_TYPE_GRABBER;
1228 video->video.release = video_device_release_empty;
1229 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1230
1231 video_set_drvdata(&video->video, video);
1232
1233 video->queue.type = video->type;
1234 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1235 video->queue.lock = &video->lock;
1236 video->queue.drv_priv = video;
1237 video->queue.buf_struct_size = sizeof(struct vsp1_vb2_buffer);
1238 video->queue.ops = &vsp1_video_queue_qops;
1239 video->queue.mem_ops = &vb2_dma_contig_memops;
1240 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1241 video->queue.dev = video->vsp1->bus_master;
1242 ret = vb2_queue_init(&video->queue);
1243 if (ret < 0) {
1244 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1245 goto error;
1246 }
1247
1248
1249 video->video.queue = &video->queue;
1250 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1251 if (ret < 0) {
1252 dev_err(video->vsp1->dev, "failed to register video device\n");
1253 goto error;
1254 }
1255
1256 return video;
1257
1258error:
1259 vsp1_video_cleanup(video);
1260 return ERR_PTR(ret);
1261}
1262
1263void vsp1_video_cleanup(struct vsp1_video *video)
1264{
1265 if (video_is_registered(&video->video))
1266 video_unregister_device(&video->video);
1267
1268 media_entity_cleanup(&video->video.entity);
1269}
1270