2 * vsp1_video.c -- R-Car VSP1 Video Node
4 * Copyright (C) 2013-2015 Renesas Electronics Corporation
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
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>
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>
33 #include "vsp1_entity.h"
34 #include "vsp1_pipe.h"
35 #include "vsp1_rwpf.h"
37 #include "vsp1_video.h"
39 #define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
40 #define VSP1_VIDEO_DEF_WIDTH 1024
41 #define VSP1_VIDEO_DEF_HEIGHT 768
43 #define VSP1_VIDEO_MIN_WIDTH 2U
44 #define VSP1_VIDEO_MAX_WIDTH 8190U
45 #define VSP1_VIDEO_MIN_HEIGHT 2U
46 #define VSP1_VIDEO_MAX_HEIGHT 8190U
48 /* -----------------------------------------------------------------------------
52 static struct v4l2_subdev *
53 vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
55 struct media_pad *remote;
57 remote = media_entity_remote_pad(local);
58 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
64 return media_entity_to_v4l2_subdev(remote->entity);
67 static int vsp1_video_verify_format(struct vsp1_video *video)
69 struct v4l2_subdev_format fmt;
70 struct v4l2_subdev *subdev;
73 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
77 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
78 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
80 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
82 if (video->rwpf->fmtinfo->mbus != fmt.format.code ||
83 video->rwpf->format.height != fmt.format.height ||
84 video->rwpf->format.width != fmt.format.width)
90 static int __vsp1_video_try_format(struct vsp1_video *video,
91 struct v4l2_pix_format_mplane *pix,
92 const struct vsp1_format_info **fmtinfo)
94 static const u32 xrgb_formats[][2] = {
95 { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 },
96 { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 },
97 { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 },
98 { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 },
101 const struct vsp1_format_info *info;
102 unsigned int width = pix->width;
103 unsigned int height = pix->height;
106 /* Backward compatibility: replace deprecated RGB formats by their XRGB
107 * equivalent. This selects the format older userspace applications want
108 * while still exposing the new format.
110 for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) {
111 if (xrgb_formats[i][0] == pix->pixelformat) {
112 pix->pixelformat = xrgb_formats[i][1];
117 /* Retrieve format information and select the default format if the
118 * requested format isn't supported.
120 info = vsp1_get_format_info(pix->pixelformat);
122 info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
124 pix->pixelformat = info->fourcc;
125 pix->colorspace = V4L2_COLORSPACE_SRGB;
126 pix->field = V4L2_FIELD_NONE;
127 memset(pix->reserved, 0, sizeof(pix->reserved));
129 /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */
130 width = round_down(width, info->hsub);
131 height = round_down(height, info->vsub);
133 /* Clamp the width and height. */
134 pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH);
135 pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT,
136 VSP1_VIDEO_MAX_HEIGHT);
138 /* Compute and clamp the stride and image size. While not documented in
139 * the datasheet, strides not aligned to a multiple of 128 bytes result
140 * in image corruption.
142 for (i = 0; i < min(info->planes, 2U); ++i) {
143 unsigned int hsub = i > 0 ? info->hsub : 1;
144 unsigned int vsub = i > 0 ? info->vsub : 1;
145 unsigned int align = 128;
148 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
149 pix->width / hsub * info->bpp[i] / 8,
150 round_down(65535U, align));
152 pix->plane_fmt[i].bytesperline = round_up(bpl, align);
153 pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
154 * pix->height / vsub;
157 if (info->planes == 3) {
158 /* The second and third planes must have the same stride. */
159 pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
160 pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
163 pix->num_planes = info->planes;
171 /* -----------------------------------------------------------------------------
172 * Pipeline Management
176 * vsp1_video_complete_buffer - Complete the current buffer
177 * @video: the video node
179 * This function completes the current buffer by filling its sequence number,
180 * time stamp and payload size, and hands it back to the videobuf core.
182 * When operating in DU output mode (deep pipeline to the DU through the LIF),
183 * the VSP1 needs to constantly supply frames to the display. In that case, if
184 * no other buffer is queued, reuse the one that has just been processed instead
185 * of handing it back to the videobuf core.
187 * Return the next queued buffer or NULL if the queue is empty.
189 static struct vsp1_vb2_buffer *
190 vsp1_video_complete_buffer(struct vsp1_video *video)
192 struct vsp1_pipeline *pipe = video->rwpf->pipe;
193 struct vsp1_vb2_buffer *next = NULL;
194 struct vsp1_vb2_buffer *done;
198 spin_lock_irqsave(&video->irqlock, flags);
200 if (list_empty(&video->irqqueue)) {
201 spin_unlock_irqrestore(&video->irqlock, flags);
205 done = list_first_entry(&video->irqqueue,
206 struct vsp1_vb2_buffer, queue);
208 /* In DU output mode reuse the buffer if the list is singular. */
209 if (pipe->lif && list_is_singular(&video->irqqueue)) {
210 spin_unlock_irqrestore(&video->irqlock, flags);
214 list_del(&done->queue);
216 if (!list_empty(&video->irqqueue))
217 next = list_first_entry(&video->irqqueue,
218 struct vsp1_vb2_buffer, queue);
220 spin_unlock_irqrestore(&video->irqlock, flags);
222 done->buf.sequence = video->sequence++;
223 done->buf.vb2_buf.timestamp = ktime_get_ns();
224 for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
225 vb2_set_plane_payload(&done->buf.vb2_buf, i,
226 vb2_plane_size(&done->buf.vb2_buf, i));
227 vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
232 static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
233 struct vsp1_rwpf *rwpf)
235 struct vsp1_video *video = rwpf->video;
236 struct vsp1_vb2_buffer *buf;
239 buf = vsp1_video_complete_buffer(video);
243 spin_lock_irqsave(&pipe->irqlock, flags);
245 video->rwpf->mem = buf->mem;
246 pipe->buffers_ready |= 1 << video->pipe_index;
248 spin_unlock_irqrestore(&pipe->irqlock, flags);
251 static void vsp1_video_pipeline_run(struct vsp1_pipeline *pipe)
253 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
257 pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
259 for (i = 0; i < vsp1->info->rpf_count; ++i) {
260 struct vsp1_rwpf *rwpf = pipe->inputs[i];
263 vsp1_rwpf_set_memory(rwpf, pipe->dl);
267 vsp1_rwpf_set_memory(pipe->output, pipe->dl);
269 vsp1_dl_list_commit(pipe->dl);
272 vsp1_pipeline_run(pipe);
275 static void vsp1_video_pipeline_frame_end(struct vsp1_pipeline *pipe)
277 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
278 enum vsp1_pipeline_state state;
282 /* Complete buffers on all video nodes. */
283 for (i = 0; i < vsp1->info->rpf_count; ++i) {
284 if (!pipe->inputs[i])
287 vsp1_video_frame_end(pipe, pipe->inputs[i]);
290 vsp1_video_frame_end(pipe, pipe->output);
292 spin_lock_irqsave(&pipe->irqlock, flags);
295 pipe->state = VSP1_PIPELINE_STOPPED;
297 /* If a stop has been requested, mark the pipeline as stopped and
298 * return. Otherwise restart the pipeline if ready.
300 if (state == VSP1_PIPELINE_STOPPING)
302 else if (vsp1_pipeline_ready(pipe))
303 vsp1_video_pipeline_run(pipe);
305 spin_unlock_irqrestore(&pipe->irqlock, flags);
308 static int vsp1_video_pipeline_build_branch(struct vsp1_pipeline *pipe,
309 struct vsp1_rwpf *input,
310 struct vsp1_rwpf *output)
312 struct media_entity_enum ent_enum;
313 struct vsp1_entity *entity;
314 struct media_pad *pad;
315 bool bru_found = false;
318 ret = media_entity_enum_init(&ent_enum, &input->entity.vsp1->media_dev);
322 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
330 /* We've reached a video node, that shouldn't have happened. */
331 if (!is_media_entity_v4l2_subdev(pad->entity)) {
336 entity = to_vsp1_entity(
337 media_entity_to_v4l2_subdev(pad->entity));
339 /* A BRU is present in the pipeline, store the BRU input pad
340 * number in the input RPF for use when configuring the RPF.
342 if (entity->type == VSP1_ENTITY_BRU) {
343 struct vsp1_bru *bru = to_bru(&entity->subdev);
345 bru->inputs[pad->index].rpf = input;
346 input->bru_input = pad->index;
351 /* We've reached the WPF, we're done. */
352 if (entity->type == VSP1_ENTITY_WPF)
355 /* Ensure the branch has no loop. */
356 if (media_entity_enum_test_and_set(&ent_enum,
357 &entity->subdev.entity)) {
362 /* UDS can't be chained. */
363 if (entity->type == VSP1_ENTITY_UDS) {
370 pipe->uds_input = bru_found ? pipe->bru
374 /* Follow the source link. The link setup operations ensure
375 * that the output fan-out can't be more than one, there is thus
376 * no need to verify here that only a single source link is
379 pad = &entity->pads[entity->source_pad];
380 pad = media_entity_remote_pad(pad);
383 /* The last entity must be the output WPF. */
384 if (entity != &output->entity)
388 media_entity_enum_cleanup(&ent_enum);
393 static int vsp1_video_pipeline_build(struct vsp1_pipeline *pipe,
394 struct vsp1_video *video)
396 struct media_entity_graph graph;
397 struct media_entity *entity = &video->video.entity;
398 struct media_device *mdev = entity->graph_obj.mdev;
402 /* Walk the graph to locate the entities and video nodes. */
403 ret = media_entity_graph_walk_init(&graph, mdev);
407 media_entity_graph_walk_start(&graph, entity);
409 while ((entity = media_entity_graph_walk_next(&graph))) {
410 struct v4l2_subdev *subdev;
411 struct vsp1_rwpf *rwpf;
412 struct vsp1_entity *e;
414 if (!is_media_entity_v4l2_subdev(entity))
417 subdev = media_entity_to_v4l2_subdev(entity);
418 e = to_vsp1_entity(subdev);
419 list_add_tail(&e->list_pipe, &pipe->entities);
421 if (e->type == VSP1_ENTITY_RPF) {
422 rwpf = to_rwpf(subdev);
423 pipe->inputs[rwpf->entity.index] = rwpf;
424 rwpf->video->pipe_index = ++pipe->num_inputs;
426 } else if (e->type == VSP1_ENTITY_WPF) {
427 rwpf = to_rwpf(subdev);
429 rwpf->video->pipe_index = 0;
431 } else if (e->type == VSP1_ENTITY_LIF) {
433 } else if (e->type == VSP1_ENTITY_BRU) {
438 media_entity_graph_walk_cleanup(&graph);
440 /* We need one output and at least one input. */
441 if (pipe->num_inputs == 0 || !pipe->output)
444 /* Follow links downstream for each input and make sure the graph
445 * contains no loop and that all branches end at the output WPF.
447 for (i = 0; i < video->vsp1->info->rpf_count; ++i) {
448 if (!pipe->inputs[i])
451 ret = vsp1_video_pipeline_build_branch(pipe, pipe->inputs[i],
460 static int vsp1_video_pipeline_init(struct vsp1_pipeline *pipe,
461 struct vsp1_video *video)
463 vsp1_pipeline_init(pipe);
465 pipe->frame_end = vsp1_video_pipeline_frame_end;
467 return vsp1_video_pipeline_build(pipe, video);
470 static struct vsp1_pipeline *vsp1_video_pipeline_get(struct vsp1_video *video)
472 struct vsp1_pipeline *pipe;
475 /* Get a pipeline object for the video node. If a pipeline has already
476 * been allocated just increment its reference count and return it.
477 * Otherwise allocate a new pipeline and initialize it, it will be freed
478 * when the last reference is released.
480 if (!video->rwpf->pipe) {
481 pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);
483 return ERR_PTR(-ENOMEM);
485 ret = vsp1_video_pipeline_init(pipe, video);
487 vsp1_pipeline_reset(pipe);
492 pipe = video->rwpf->pipe;
493 kref_get(&pipe->kref);
499 static void vsp1_video_pipeline_release(struct kref *kref)
501 struct vsp1_pipeline *pipe = container_of(kref, typeof(*pipe), kref);
503 vsp1_pipeline_reset(pipe);
507 static void vsp1_video_pipeline_put(struct vsp1_pipeline *pipe)
509 struct media_device *mdev = &pipe->output->entity.vsp1->media_dev;
511 mutex_lock(&mdev->graph_mutex);
512 kref_put(&pipe->kref, vsp1_video_pipeline_release);
513 mutex_unlock(&mdev->graph_mutex);
516 /* -----------------------------------------------------------------------------
517 * videobuf2 Queue Operations
521 vsp1_video_queue_setup(struct vb2_queue *vq,
522 unsigned int *nbuffers, unsigned int *nplanes,
523 unsigned int sizes[], void *alloc_ctxs[])
525 struct vsp1_video *video = vb2_get_drv_priv(vq);
526 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
530 if (*nplanes != format->num_planes)
533 for (i = 0; i < *nplanes; i++) {
534 if (sizes[i] < format->plane_fmt[i].sizeimage)
536 alloc_ctxs[i] = video->alloc_ctx;
541 *nplanes = format->num_planes;
543 for (i = 0; i < format->num_planes; ++i) {
544 sizes[i] = format->plane_fmt[i].sizeimage;
545 alloc_ctxs[i] = video->alloc_ctx;
551 static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
553 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
554 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
555 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
556 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
559 if (vb->num_planes < format->num_planes)
562 for (i = 0; i < vb->num_planes; ++i) {
563 buf->mem.addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
565 if (vb2_plane_size(vb, i) < format->plane_fmt[i].sizeimage)
570 buf->mem.addr[i] = 0;
575 static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
577 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
578 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
579 struct vsp1_pipeline *pipe = video->rwpf->pipe;
580 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
584 spin_lock_irqsave(&video->irqlock, flags);
585 empty = list_empty(&video->irqqueue);
586 list_add_tail(&buf->queue, &video->irqqueue);
587 spin_unlock_irqrestore(&video->irqlock, flags);
592 spin_lock_irqsave(&pipe->irqlock, flags);
594 video->rwpf->mem = buf->mem;
595 pipe->buffers_ready |= 1 << video->pipe_index;
597 if (vb2_is_streaming(&video->queue) &&
598 vsp1_pipeline_ready(pipe))
599 vsp1_video_pipeline_run(pipe);
601 spin_unlock_irqrestore(&pipe->irqlock, flags);
604 static int vsp1_video_setup_pipeline(struct vsp1_pipeline *pipe)
606 struct vsp1_entity *entity;
608 /* Prepare the display list. */
609 pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
614 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
616 /* If a BRU is present in the pipeline before the UDS, the alpha
617 * component doesn't need to be scaled as the BRU output alpha
618 * value is fixed to 255. Otherwise we need to scale the alpha
619 * component only when available at the input RPF.
621 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
622 uds->scale_alpha = false;
624 struct vsp1_rwpf *rpf =
625 to_rwpf(&pipe->uds_input->subdev);
627 uds->scale_alpha = rpf->fmtinfo->alpha;
631 list_for_each_entry(entity, &pipe->entities, list_pipe) {
632 vsp1_entity_route_setup(entity, pipe->dl);
634 if (entity->ops->configure)
635 entity->ops->configure(entity, pipe, pipe->dl);
641 static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
643 struct vsp1_video *video = vb2_get_drv_priv(vq);
644 struct vsp1_pipeline *pipe = video->rwpf->pipe;
648 mutex_lock(&pipe->lock);
649 if (pipe->stream_count == pipe->num_inputs) {
650 ret = vsp1_video_setup_pipeline(pipe);
652 mutex_unlock(&pipe->lock);
657 pipe->stream_count++;
658 mutex_unlock(&pipe->lock);
660 spin_lock_irqsave(&pipe->irqlock, flags);
661 if (vsp1_pipeline_ready(pipe))
662 vsp1_video_pipeline_run(pipe);
663 spin_unlock_irqrestore(&pipe->irqlock, flags);
668 static void vsp1_video_stop_streaming(struct vb2_queue *vq)
670 struct vsp1_video *video = vb2_get_drv_priv(vq);
671 struct vsp1_pipeline *pipe = video->rwpf->pipe;
672 struct vsp1_vb2_buffer *buffer;
676 mutex_lock(&pipe->lock);
677 if (--pipe->stream_count == 0) {
678 /* Stop the pipeline. */
679 ret = vsp1_pipeline_stop(pipe);
680 if (ret == -ETIMEDOUT)
681 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
683 vsp1_dl_list_put(pipe->dl);
686 mutex_unlock(&pipe->lock);
688 media_entity_pipeline_stop(&video->video.entity);
689 vsp1_video_pipeline_put(pipe);
691 /* Remove all buffers from the IRQ queue. */
692 spin_lock_irqsave(&video->irqlock, flags);
693 list_for_each_entry(buffer, &video->irqqueue, queue)
694 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
695 INIT_LIST_HEAD(&video->irqqueue);
696 spin_unlock_irqrestore(&video->irqlock, flags);
699 static struct vb2_ops vsp1_video_queue_qops = {
700 .queue_setup = vsp1_video_queue_setup,
701 .buf_prepare = vsp1_video_buffer_prepare,
702 .buf_queue = vsp1_video_buffer_queue,
703 .wait_prepare = vb2_ops_wait_prepare,
704 .wait_finish = vb2_ops_wait_finish,
705 .start_streaming = vsp1_video_start_streaming,
706 .stop_streaming = vsp1_video_stop_streaming,
709 /* -----------------------------------------------------------------------------
714 vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
716 struct v4l2_fh *vfh = file->private_data;
717 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
719 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
720 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
721 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
723 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
724 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
725 | V4L2_CAP_STREAMING;
727 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
728 | V4L2_CAP_STREAMING;
730 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
731 strlcpy(cap->card, video->video.name, sizeof(cap->card));
732 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
733 dev_name(video->vsp1->dev));
739 vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
741 struct v4l2_fh *vfh = file->private_data;
742 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
744 if (format->type != video->queue.type)
747 mutex_lock(&video->lock);
748 format->fmt.pix_mp = video->rwpf->format;
749 mutex_unlock(&video->lock);
755 vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
757 struct v4l2_fh *vfh = file->private_data;
758 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
760 if (format->type != video->queue.type)
763 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
767 vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
769 struct v4l2_fh *vfh = file->private_data;
770 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
771 const struct vsp1_format_info *info;
774 if (format->type != video->queue.type)
777 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
781 mutex_lock(&video->lock);
783 if (vb2_is_busy(&video->queue)) {
788 video->rwpf->format = format->fmt.pix_mp;
789 video->rwpf->fmtinfo = info;
792 mutex_unlock(&video->lock);
797 vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
799 struct v4l2_fh *vfh = file->private_data;
800 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
801 struct media_device *mdev = &video->vsp1->media_dev;
802 struct vsp1_pipeline *pipe;
805 if (video->queue.owner && video->queue.owner != file->private_data)
810 /* Get a pipeline for the video node and start streaming on it. No link
811 * touching an entity in the pipeline can be activated or deactivated
812 * once streaming is started.
814 mutex_lock(&mdev->graph_mutex);
816 pipe = vsp1_video_pipeline_get(video);
818 mutex_unlock(&mdev->graph_mutex);
819 return PTR_ERR(pipe);
822 ret = __media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
824 mutex_unlock(&mdev->graph_mutex);
828 mutex_unlock(&mdev->graph_mutex);
830 /* Verify that the configured format matches the output of the connected
833 ret = vsp1_video_verify_format(video);
837 /* Start the queue. */
838 ret = vb2_streamon(&video->queue, type);
845 media_entity_pipeline_stop(&video->video.entity);
847 vsp1_video_pipeline_put(pipe);
851 static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
852 .vidioc_querycap = vsp1_video_querycap,
853 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
854 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
855 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
856 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
857 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
858 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
859 .vidioc_reqbufs = vb2_ioctl_reqbufs,
860 .vidioc_querybuf = vb2_ioctl_querybuf,
861 .vidioc_qbuf = vb2_ioctl_qbuf,
862 .vidioc_dqbuf = vb2_ioctl_dqbuf,
863 .vidioc_create_bufs = vb2_ioctl_create_bufs,
864 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
865 .vidioc_streamon = vsp1_video_streamon,
866 .vidioc_streamoff = vb2_ioctl_streamoff,
869 /* -----------------------------------------------------------------------------
870 * V4L2 File Operations
873 static int vsp1_video_open(struct file *file)
875 struct vsp1_video *video = video_drvdata(file);
879 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
883 v4l2_fh_init(vfh, &video->video);
886 file->private_data = vfh;
888 ret = vsp1_device_get(video->vsp1);
897 static int vsp1_video_release(struct file *file)
899 struct vsp1_video *video = video_drvdata(file);
900 struct v4l2_fh *vfh = file->private_data;
902 mutex_lock(&video->lock);
903 if (video->queue.owner == vfh) {
904 vb2_queue_release(&video->queue);
905 video->queue.owner = NULL;
907 mutex_unlock(&video->lock);
909 vsp1_device_put(video->vsp1);
911 v4l2_fh_release(file);
913 file->private_data = NULL;
918 static struct v4l2_file_operations vsp1_video_fops = {
919 .owner = THIS_MODULE,
920 .unlocked_ioctl = video_ioctl2,
921 .open = vsp1_video_open,
922 .release = vsp1_video_release,
923 .poll = vb2_fop_poll,
924 .mmap = vb2_fop_mmap,
927 /* -----------------------------------------------------------------------------
928 * Initialization and Cleanup
931 struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1,
932 struct vsp1_rwpf *rwpf)
934 struct vsp1_video *video;
935 const char *direction;
938 video = devm_kzalloc(vsp1->dev, sizeof(*video), GFP_KERNEL);
940 return ERR_PTR(-ENOMEM);
947 if (rwpf->entity.type == VSP1_ENTITY_RPF) {
949 video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
950 video->pad.flags = MEDIA_PAD_FL_SOURCE;
951 video->video.vfl_dir = VFL_DIR_TX;
953 direction = "output";
954 video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
955 video->pad.flags = MEDIA_PAD_FL_SINK;
956 video->video.vfl_dir = VFL_DIR_RX;
959 mutex_init(&video->lock);
960 spin_lock_init(&video->irqlock);
961 INIT_LIST_HEAD(&video->irqqueue);
963 /* Initialize the media entity... */
964 ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
968 /* ... and the format ... */
969 rwpf->format.pixelformat = VSP1_VIDEO_DEF_FORMAT;
970 rwpf->format.width = VSP1_VIDEO_DEF_WIDTH;
971 rwpf->format.height = VSP1_VIDEO_DEF_HEIGHT;
972 __vsp1_video_try_format(video, &rwpf->format, &rwpf->fmtinfo);
974 /* ... and the video node... */
975 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
976 video->video.fops = &vsp1_video_fops;
977 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
978 rwpf->entity.subdev.name, direction);
979 video->video.vfl_type = VFL_TYPE_GRABBER;
980 video->video.release = video_device_release_empty;
981 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
983 video_set_drvdata(&video->video, video);
985 /* ... and the buffers queue... */
986 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
987 if (IS_ERR(video->alloc_ctx)) {
988 ret = PTR_ERR(video->alloc_ctx);
992 video->queue.type = video->type;
993 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
994 video->queue.lock = &video->lock;
995 video->queue.drv_priv = video;
996 video->queue.buf_struct_size = sizeof(struct vsp1_vb2_buffer);
997 video->queue.ops = &vsp1_video_queue_qops;
998 video->queue.mem_ops = &vb2_dma_contig_memops;
999 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1000 ret = vb2_queue_init(&video->queue);
1002 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1006 /* ... and register the video device. */
1007 video->video.queue = &video->queue;
1008 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1010 dev_err(video->vsp1->dev, "failed to register video device\n");
1017 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1018 vsp1_video_cleanup(video);
1019 return ERR_PTR(ret);
1022 void vsp1_video_cleanup(struct vsp1_video *video)
1024 if (video_is_registered(&video->video))
1025 video_unregister_device(&video->video);
1027 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1028 media_entity_cleanup(&video->video.entity);