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"
36 #include "vsp1_pipe.h"
37 #include "vsp1_rwpf.h"
39 #include "vsp1_video.h"
41 #define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
42 #define VSP1_VIDEO_DEF_WIDTH 1024
43 #define VSP1_VIDEO_DEF_HEIGHT 768
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
50 /* -----------------------------------------------------------------------------
54 static struct v4l2_subdev *
55 vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
57 struct media_pad *remote;
59 remote = media_entity_remote_pad(local);
60 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
66 return media_entity_to_v4l2_subdev(remote->entity);
69 static int vsp1_video_verify_format(struct vsp1_video *video)
71 struct v4l2_subdev_format fmt;
72 struct v4l2_subdev *subdev;
75 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
79 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
80 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
82 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
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)
92 static int __vsp1_video_try_format(struct vsp1_video *video,
93 struct v4l2_pix_format_mplane *pix,
94 const struct vsp1_format_info **fmtinfo)
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 },
103 const struct vsp1_format_info *info;
104 unsigned int width = pix->width;
105 unsigned int height = pix->height;
109 * Backward compatibility: replace deprecated RGB formats by their XRGB
110 * equivalent. This selects the format older userspace applications want
111 * while still exposing the new format.
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];
121 * Retrieve format information and select the default format if the
122 * requested format isn't supported.
124 info = vsp1_get_format_info(video->vsp1, pix->pixelformat);
126 info = vsp1_get_format_info(video->vsp1, VSP1_VIDEO_DEF_FORMAT);
128 pix->pixelformat = info->fourcc;
129 pix->colorspace = V4L2_COLORSPACE_SRGB;
130 pix->field = V4L2_FIELD_NONE;
132 if (info->fourcc == V4L2_PIX_FMT_HSV24 ||
133 info->fourcc == V4L2_PIX_FMT_HSV32)
134 pix->hsv_enc = V4L2_HSV_ENC_256;
136 memset(pix->reserved, 0, sizeof(pix->reserved));
138 /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */
139 width = round_down(width, info->hsub);
140 height = round_down(height, info->vsub);
142 /* Clamp the width and height. */
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);
148 * Compute and clamp the stride and image size. While not documented in
149 * the datasheet, strides not aligned to a multiple of 128 bytes result
150 * in image corruption.
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;
158 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
159 pix->width / hsub * info->bpp[i] / 8,
160 round_down(65535U, align));
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;
167 if (info->planes == 3) {
168 /* The second and third planes must have the same stride. */
169 pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
170 pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
173 pix->num_planes = info->planes;
181 /* -----------------------------------------------------------------------------
182 * VSP1 Partition Algorithm support
186 * vsp1_video_calculate_partition - Calculate the active partition output window
188 * @pipe: the pipeline
189 * @partition: partition that will hold the calculated values
190 * @div_size: pre-determined maximum partition division size
191 * @index: partition index
193 static void vsp1_video_calculate_partition(struct vsp1_pipeline *pipe,
194 struct vsp1_partition *partition,
195 unsigned int div_size,
198 const struct v4l2_mbus_framefmt *format;
199 struct vsp1_partition_window window;
200 unsigned int modulus;
203 * Partitions are computed on the size before rotation, use the format
206 format = vsp1_entity_get_pad_format(&pipe->output->entity,
207 pipe->output->entity.config,
210 /* A single partition simply processes the output size in full. */
211 if (pipe->partitions <= 1) {
213 window.width = format->width;
215 vsp1_pipeline_propagate_partition(pipe, partition, index,
220 /* Initialise the partition with sane starting conditions. */
221 window.left = index * div_size;
222 window.width = div_size;
224 modulus = format->width % div_size;
227 * We need to prevent the last partition from being smaller than the
228 * *minimum* width of the hardware capabilities.
230 * If the modulus is less than half of the partition size,
231 * the penultimate partition is reduced to half, which is added
232 * to the final partition: |1234|1234|1234|12|341|
233 * to prevents this: |1234|1234|1234|1234|1|.
237 * pipe->partitions is 1 based, whilst index is a 0 based index.
238 * Normalise this locally.
240 unsigned int partitions = pipe->partitions - 1;
242 if (modulus < div_size / 2) {
243 if (index == partitions - 1) {
244 /* Halve the penultimate partition. */
245 window.width = div_size / 2;
246 } else if (index == partitions) {
247 /* Increase the final partition. */
248 window.width = (div_size / 2) + modulus;
249 window.left -= div_size / 2;
251 } else if (index == partitions) {
252 window.width = modulus;
256 vsp1_pipeline_propagate_partition(pipe, partition, index, &window);
259 static int vsp1_video_pipeline_setup_partitions(struct vsp1_pipeline *pipe)
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;
268 * Partitions are computed on the size before rotation, use the format
271 format = vsp1_entity_get_pad_format(&pipe->output->entity,
272 pipe->output->entity.config,
274 div_size = format->width;
277 * Only Gen3 hardware requires image partitioning, Gen2 will operate
278 * with a single partition that covers the whole output.
280 if (vsp1->info->gen == 3) {
281 list_for_each_entry(entity, &pipe->entities, list_pipe) {
282 unsigned int entity_max;
284 if (!entity->ops->max_width)
287 entity_max = entity->ops->max_width(entity, pipe);
289 div_size = min(div_size, entity_max);
293 pipe->partitions = DIV_ROUND_UP(format->width, div_size);
294 pipe->part_table = kcalloc(pipe->partitions, sizeof(*pipe->part_table),
296 if (!pipe->part_table)
299 for (i = 0; i < pipe->partitions; ++i)
300 vsp1_video_calculate_partition(pipe, &pipe->part_table[i],
306 /* -----------------------------------------------------------------------------
307 * Pipeline Management
311 * vsp1_video_complete_buffer - Complete the current buffer
312 * @video: the video node
314 * This function completes the current buffer by filling its sequence number,
315 * time stamp and payload size, and hands it back to the videobuf core.
317 * When operating in DU output mode (deep pipeline to the DU through the LIF),
318 * the VSP1 needs to constantly supply frames to the display. In that case, if
319 * no other buffer is queued, reuse the one that has just been processed instead
320 * of handing it back to the videobuf core.
322 * Return the next queued buffer or NULL if the queue is empty.
324 static struct vsp1_vb2_buffer *
325 vsp1_video_complete_buffer(struct vsp1_video *video)
327 struct vsp1_pipeline *pipe = video->rwpf->entity.pipe;
328 struct vsp1_vb2_buffer *next = NULL;
329 struct vsp1_vb2_buffer *done;
333 spin_lock_irqsave(&video->irqlock, flags);
335 if (list_empty(&video->irqqueue)) {
336 spin_unlock_irqrestore(&video->irqlock, flags);
340 done = list_first_entry(&video->irqqueue,
341 struct vsp1_vb2_buffer, queue);
343 /* In DU output mode reuse the buffer if the list is singular. */
344 if (pipe->lif && list_is_singular(&video->irqqueue)) {
345 spin_unlock_irqrestore(&video->irqlock, flags);
349 list_del(&done->queue);
351 if (!list_empty(&video->irqqueue))
352 next = list_first_entry(&video->irqqueue,
353 struct vsp1_vb2_buffer, queue);
355 spin_unlock_irqrestore(&video->irqlock, flags);
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);
367 static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
368 struct vsp1_rwpf *rwpf)
370 struct vsp1_video *video = rwpf->video;
371 struct vsp1_vb2_buffer *buf;
373 buf = vsp1_video_complete_buffer(video);
377 video->rwpf->mem = buf->mem;
378 pipe->buffers_ready |= 1 << video->pipe_index;
381 static void vsp1_video_pipeline_run_partition(struct vsp1_pipeline *pipe,
382 struct vsp1_dl_list *dl,
383 unsigned int partition)
385 struct vsp1_entity *entity;
387 pipe->partition = &pipe->part_table[partition];
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);
396 static void vsp1_video_pipeline_run(struct vsp1_pipeline *pipe)
398 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
399 struct vsp1_entity *entity;
400 unsigned int partition;
403 pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
406 * Start with the runtime parameters as the configure operation can
407 * compute/cache information needed when configuring partitions. This
408 * is the case with flipping in the WPF.
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);
416 /* Run the first partition */
417 vsp1_video_pipeline_run_partition(pipe, pipe->dl, 0);
419 /* Process consecutive partitions as necessary */
420 for (partition = 1; partition < pipe->partitions; ++partition) {
421 struct vsp1_dl_list *dl;
423 dl = vsp1_dl_list_get(pipe->output->dlm);
426 * An incomplete chain will still function, but output only
427 * the partitions that had a dl available. The frame end
428 * interrupt will be marked on the last dl in the chain.
431 dev_err(vsp1->dev, "Failed to obtain a dl list. Frame will be incomplete\n");
435 vsp1_video_pipeline_run_partition(pipe, dl, partition);
436 vsp1_dl_list_add_chain(pipe->dl, dl);
439 /* Complete, and commit the head display list. */
440 vsp1_dl_list_commit(pipe->dl, false);
443 vsp1_pipeline_run(pipe);
446 static void vsp1_video_pipeline_frame_end(struct vsp1_pipeline *pipe,
447 unsigned int completion)
449 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
450 enum vsp1_pipeline_state state;
454 /* M2M Pipelines should never call here with an incomplete frame. */
455 WARN_ON_ONCE(!(completion & VSP1_DL_FRAME_END_COMPLETED));
457 spin_lock_irqsave(&pipe->irqlock, flags);
459 /* Complete buffers on all video nodes. */
460 for (i = 0; i < vsp1->info->rpf_count; ++i) {
461 if (!pipe->inputs[i])
464 vsp1_video_frame_end(pipe, pipe->inputs[i]);
467 vsp1_video_frame_end(pipe, pipe->output);
470 pipe->state = VSP1_PIPELINE_STOPPED;
473 * If a stop has been requested, mark the pipeline as stopped and
474 * return. Otherwise restart the pipeline if ready.
476 if (state == VSP1_PIPELINE_STOPPING)
478 else if (vsp1_pipeline_ready(pipe))
479 vsp1_video_pipeline_run(pipe);
481 spin_unlock_irqrestore(&pipe->irqlock, flags);
484 static int vsp1_video_pipeline_build_branch(struct vsp1_pipeline *pipe,
485 struct vsp1_rwpf *input,
486 struct vsp1_rwpf *output)
488 struct media_entity_enum ent_enum;
489 struct vsp1_entity *entity;
490 struct media_pad *pad;
491 struct vsp1_brx *brx = NULL;
494 ret = media_entity_enum_init(&ent_enum, &input->entity.vsp1->media_dev);
499 * The main data path doesn't include the HGO or HGT, use
500 * vsp1_entity_remote_pad() to traverse the graph.
503 pad = vsp1_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
511 /* We've reached a video node, that shouldn't have happened. */
512 if (!is_media_entity_v4l2_subdev(pad->entity)) {
517 entity = to_vsp1_entity(
518 media_entity_to_v4l2_subdev(pad->entity));
521 * A BRU or BRS is present in the pipeline, store its input pad
522 * number in the input RPF for use when configuring the RPF.
524 if (entity->type == VSP1_ENTITY_BRU ||
525 entity->type == VSP1_ENTITY_BRS) {
526 /* BRU and BRS can't be chained. */
532 brx = to_brx(&entity->subdev);
533 brx->inputs[pad->index].rpf = input;
534 input->brx_input = pad->index;
537 /* We've reached the WPF, we're done. */
538 if (entity->type == VSP1_ENTITY_WPF)
541 /* Ensure the branch has no loop. */
542 if (media_entity_enum_test_and_set(&ent_enum,
543 &entity->subdev.entity)) {
548 /* UDS can't be chained. */
549 if (entity->type == VSP1_ENTITY_UDS) {
556 pipe->uds_input = brx ? &brx->entity : &input->entity;
559 /* Follow the source link, ignoring any HGO or HGT. */
560 pad = &entity->pads[entity->source_pad];
561 pad = vsp1_entity_remote_pad(pad);
564 /* The last entity must be the output WPF. */
565 if (entity != &output->entity)
569 media_entity_enum_cleanup(&ent_enum);
574 static int vsp1_video_pipeline_build(struct vsp1_pipeline *pipe,
575 struct vsp1_video *video)
577 struct media_graph graph;
578 struct media_entity *entity = &video->video.entity;
579 struct media_device *mdev = entity->graph_obj.mdev;
583 /* Walk the graph to locate the entities and video nodes. */
584 ret = media_graph_walk_init(&graph, mdev);
588 media_graph_walk_start(&graph, entity);
590 while ((entity = media_graph_walk_next(&graph))) {
591 struct v4l2_subdev *subdev;
592 struct vsp1_rwpf *rwpf;
593 struct vsp1_entity *e;
595 if (!is_media_entity_v4l2_subdev(entity))
598 subdev = media_entity_to_v4l2_subdev(entity);
599 e = to_vsp1_entity(subdev);
600 list_add_tail(&e->list_pipe, &pipe->entities);
604 case VSP1_ENTITY_RPF:
605 rwpf = to_rwpf(subdev);
606 pipe->inputs[rwpf->entity.index] = rwpf;
607 rwpf->video->pipe_index = ++pipe->num_inputs;
610 case VSP1_ENTITY_WPF:
611 rwpf = to_rwpf(subdev);
613 rwpf->video->pipe_index = 0;
616 case VSP1_ENTITY_LIF:
620 case VSP1_ENTITY_BRU:
621 case VSP1_ENTITY_BRS:
625 case VSP1_ENTITY_HGO:
629 case VSP1_ENTITY_HGT:
638 media_graph_walk_cleanup(&graph);
640 /* We need one output and at least one input. */
641 if (pipe->num_inputs == 0 || !pipe->output)
645 * Follow links downstream for each input and make sure the graph
646 * contains no loop and that all branches end at the output WPF.
648 for (i = 0; i < video->vsp1->info->rpf_count; ++i) {
649 if (!pipe->inputs[i])
652 ret = vsp1_video_pipeline_build_branch(pipe, pipe->inputs[i],
661 static int vsp1_video_pipeline_init(struct vsp1_pipeline *pipe,
662 struct vsp1_video *video)
664 vsp1_pipeline_init(pipe);
666 pipe->frame_end = vsp1_video_pipeline_frame_end;
668 return vsp1_video_pipeline_build(pipe, video);
671 static struct vsp1_pipeline *vsp1_video_pipeline_get(struct vsp1_video *video)
673 struct vsp1_pipeline *pipe;
677 * Get a pipeline object for the video node. If a pipeline has already
678 * been allocated just increment its reference count and return it.
679 * Otherwise allocate a new pipeline and initialize it, it will be freed
680 * when the last reference is released.
682 if (!video->rwpf->entity.pipe) {
683 pipe = kzalloc(sizeof(*pipe), GFP_KERNEL);
685 return ERR_PTR(-ENOMEM);
687 ret = vsp1_video_pipeline_init(pipe, video);
689 vsp1_pipeline_reset(pipe);
694 pipe = video->rwpf->entity.pipe;
695 kref_get(&pipe->kref);
701 static void vsp1_video_pipeline_release(struct kref *kref)
703 struct vsp1_pipeline *pipe = container_of(kref, typeof(*pipe), kref);
705 vsp1_pipeline_reset(pipe);
709 static void vsp1_video_pipeline_put(struct vsp1_pipeline *pipe)
711 struct media_device *mdev = &pipe->output->entity.vsp1->media_dev;
713 mutex_lock(&mdev->graph_mutex);
714 kref_put(&pipe->kref, vsp1_video_pipeline_release);
715 mutex_unlock(&mdev->graph_mutex);
718 /* -----------------------------------------------------------------------------
719 * videobuf2 Queue Operations
723 vsp1_video_queue_setup(struct vb2_queue *vq,
724 unsigned int *nbuffers, unsigned int *nplanes,
725 unsigned int sizes[], struct device *alloc_devs[])
727 struct vsp1_video *video = vb2_get_drv_priv(vq);
728 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
732 if (*nplanes != format->num_planes)
735 for (i = 0; i < *nplanes; i++)
736 if (sizes[i] < format->plane_fmt[i].sizeimage)
741 *nplanes = format->num_planes;
743 for (i = 0; i < format->num_planes; ++i)
744 sizes[i] = format->plane_fmt[i].sizeimage;
749 static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
751 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
752 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
753 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
754 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
757 if (vb->num_planes < format->num_planes)
760 for (i = 0; i < vb->num_planes; ++i) {
761 buf->mem.addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
763 if (vb2_plane_size(vb, i) < format->plane_fmt[i].sizeimage)
768 buf->mem.addr[i] = 0;
773 static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
775 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
776 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
777 struct vsp1_pipeline *pipe = video->rwpf->entity.pipe;
778 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
782 spin_lock_irqsave(&video->irqlock, flags);
783 empty = list_empty(&video->irqqueue);
784 list_add_tail(&buf->queue, &video->irqqueue);
785 spin_unlock_irqrestore(&video->irqlock, flags);
790 spin_lock_irqsave(&pipe->irqlock, flags);
792 video->rwpf->mem = buf->mem;
793 pipe->buffers_ready |= 1 << video->pipe_index;
795 if (vb2_is_streaming(&video->queue) &&
796 vsp1_pipeline_ready(pipe))
797 vsp1_video_pipeline_run(pipe);
799 spin_unlock_irqrestore(&pipe->irqlock, flags);
802 static int vsp1_video_setup_pipeline(struct vsp1_pipeline *pipe)
804 struct vsp1_entity *entity;
807 /* Determine this pipelines sizes for image partitioning support. */
808 ret = vsp1_video_pipeline_setup_partitions(pipe);
812 /* Prepare the display list. */
813 pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
818 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
821 * If a BRU or BRS is present in the pipeline before the UDS,
822 * the alpha component doesn't need to be scaled as the BRU and
823 * BRS output alpha value is fixed to 255. Otherwise we need to
824 * scale the alpha component only when available at the input
827 if (pipe->uds_input->type == VSP1_ENTITY_BRU ||
828 pipe->uds_input->type == VSP1_ENTITY_BRS) {
829 uds->scale_alpha = false;
831 struct vsp1_rwpf *rpf =
832 to_rwpf(&pipe->uds_input->subdev);
834 uds->scale_alpha = rpf->fmtinfo->alpha;
838 list_for_each_entry(entity, &pipe->entities, list_pipe) {
839 vsp1_entity_route_setup(entity, pipe, pipe->dl);
841 if (entity->ops->configure)
842 entity->ops->configure(entity, pipe, pipe->dl,
843 VSP1_ENTITY_PARAMS_INIT);
849 static void vsp1_video_cleanup_pipeline(struct vsp1_pipeline *pipe)
851 struct vsp1_video *video = pipe->output->video;
852 struct vsp1_vb2_buffer *buffer;
855 /* Remove all buffers from the IRQ queue. */
856 spin_lock_irqsave(&video->irqlock, flags);
857 list_for_each_entry(buffer, &video->irqqueue, queue)
858 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
859 INIT_LIST_HEAD(&video->irqqueue);
860 spin_unlock_irqrestore(&video->irqlock, flags);
862 /* Release our partition table allocation */
863 mutex_lock(&pipe->lock);
864 kfree(pipe->part_table);
865 pipe->part_table = NULL;
866 mutex_unlock(&pipe->lock);
869 static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
871 struct vsp1_video *video = vb2_get_drv_priv(vq);
872 struct vsp1_pipeline *pipe = video->rwpf->entity.pipe;
873 bool start_pipeline = false;
877 mutex_lock(&pipe->lock);
878 if (pipe->stream_count == pipe->num_inputs) {
879 ret = vsp1_video_setup_pipeline(pipe);
881 mutex_unlock(&pipe->lock);
882 vsp1_video_cleanup_pipeline(pipe);
886 start_pipeline = true;
889 pipe->stream_count++;
890 mutex_unlock(&pipe->lock);
893 * vsp1_pipeline_ready() is not sufficient to establish that all streams
894 * are prepared and the pipeline is configured, as multiple streams
895 * can race through streamon with buffers already queued; Therefore we
896 * don't even attempt to start the pipeline until the last stream has
897 * called through here.
902 spin_lock_irqsave(&pipe->irqlock, flags);
903 if (vsp1_pipeline_ready(pipe))
904 vsp1_video_pipeline_run(pipe);
905 spin_unlock_irqrestore(&pipe->irqlock, flags);
910 static void vsp1_video_stop_streaming(struct vb2_queue *vq)
912 struct vsp1_video *video = vb2_get_drv_priv(vq);
913 struct vsp1_pipeline *pipe = video->rwpf->entity.pipe;
918 * Clear the buffers ready flag to make sure the device won't be started
919 * by a QBUF on the video node on the other side of the pipeline.
921 spin_lock_irqsave(&video->irqlock, flags);
922 pipe->buffers_ready &= ~(1 << video->pipe_index);
923 spin_unlock_irqrestore(&video->irqlock, flags);
925 mutex_lock(&pipe->lock);
926 if (--pipe->stream_count == pipe->num_inputs) {
927 /* Stop the pipeline. */
928 ret = vsp1_pipeline_stop(pipe);
929 if (ret == -ETIMEDOUT)
930 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
932 vsp1_dl_list_put(pipe->dl);
935 mutex_unlock(&pipe->lock);
937 media_pipeline_stop(&video->video.entity);
938 vsp1_video_cleanup_pipeline(pipe);
939 vsp1_video_pipeline_put(pipe);
942 static const struct vb2_ops vsp1_video_queue_qops = {
943 .queue_setup = vsp1_video_queue_setup,
944 .buf_prepare = vsp1_video_buffer_prepare,
945 .buf_queue = vsp1_video_buffer_queue,
946 .wait_prepare = vb2_ops_wait_prepare,
947 .wait_finish = vb2_ops_wait_finish,
948 .start_streaming = vsp1_video_start_streaming,
949 .stop_streaming = vsp1_video_stop_streaming,
952 /* -----------------------------------------------------------------------------
957 vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
959 struct v4l2_fh *vfh = file->private_data;
960 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
962 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
963 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
964 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
966 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
967 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
968 | V4L2_CAP_STREAMING;
970 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
971 | V4L2_CAP_STREAMING;
973 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
974 strlcpy(cap->card, video->video.name, sizeof(cap->card));
975 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
976 dev_name(video->vsp1->dev));
982 vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
984 struct v4l2_fh *vfh = file->private_data;
985 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
987 if (format->type != video->queue.type)
990 mutex_lock(&video->lock);
991 format->fmt.pix_mp = video->rwpf->format;
992 mutex_unlock(&video->lock);
998 vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
1000 struct v4l2_fh *vfh = file->private_data;
1001 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1003 if (format->type != video->queue.type)
1006 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
1010 vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1012 struct v4l2_fh *vfh = file->private_data;
1013 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1014 const struct vsp1_format_info *info;
1017 if (format->type != video->queue.type)
1020 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1024 mutex_lock(&video->lock);
1026 if (vb2_is_busy(&video->queue)) {
1031 video->rwpf->format = format->fmt.pix_mp;
1032 video->rwpf->fmtinfo = info;
1035 mutex_unlock(&video->lock);
1040 vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1042 struct v4l2_fh *vfh = file->private_data;
1043 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1044 struct media_device *mdev = &video->vsp1->media_dev;
1045 struct vsp1_pipeline *pipe;
1048 if (video->queue.owner && video->queue.owner != file->private_data)
1052 * Get a pipeline for the video node and start streaming on it. No link
1053 * touching an entity in the pipeline can be activated or deactivated
1054 * once streaming is started.
1056 mutex_lock(&mdev->graph_mutex);
1058 pipe = vsp1_video_pipeline_get(video);
1060 mutex_unlock(&mdev->graph_mutex);
1061 return PTR_ERR(pipe);
1064 ret = __media_pipeline_start(&video->video.entity, &pipe->pipe);
1066 mutex_unlock(&mdev->graph_mutex);
1070 mutex_unlock(&mdev->graph_mutex);
1073 * Verify that the configured format matches the output of the connected
1076 ret = vsp1_video_verify_format(video);
1080 /* Start the queue. */
1081 ret = vb2_streamon(&video->queue, type);
1088 media_pipeline_stop(&video->video.entity);
1090 vsp1_video_pipeline_put(pipe);
1094 static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1095 .vidioc_querycap = vsp1_video_querycap,
1096 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1097 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1098 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1099 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1100 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1101 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1102 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1103 .vidioc_querybuf = vb2_ioctl_querybuf,
1104 .vidioc_qbuf = vb2_ioctl_qbuf,
1105 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1106 .vidioc_expbuf = vb2_ioctl_expbuf,
1107 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1108 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1109 .vidioc_streamon = vsp1_video_streamon,
1110 .vidioc_streamoff = vb2_ioctl_streamoff,
1113 /* -----------------------------------------------------------------------------
1114 * V4L2 File Operations
1117 static int vsp1_video_open(struct file *file)
1119 struct vsp1_video *video = video_drvdata(file);
1120 struct v4l2_fh *vfh;
1123 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1127 v4l2_fh_init(vfh, &video->video);
1130 file->private_data = vfh;
1132 ret = vsp1_device_get(video->vsp1);
1142 static int vsp1_video_release(struct file *file)
1144 struct vsp1_video *video = video_drvdata(file);
1145 struct v4l2_fh *vfh = file->private_data;
1147 mutex_lock(&video->lock);
1148 if (video->queue.owner == vfh) {
1149 vb2_queue_release(&video->queue);
1150 video->queue.owner = NULL;
1152 mutex_unlock(&video->lock);
1154 vsp1_device_put(video->vsp1);
1156 v4l2_fh_release(file);
1158 file->private_data = NULL;
1163 static const struct v4l2_file_operations vsp1_video_fops = {
1164 .owner = THIS_MODULE,
1165 .unlocked_ioctl = video_ioctl2,
1166 .open = vsp1_video_open,
1167 .release = vsp1_video_release,
1168 .poll = vb2_fop_poll,
1169 .mmap = vb2_fop_mmap,
1172 /* -----------------------------------------------------------------------------
1173 * Initialization and Cleanup
1176 struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1,
1177 struct vsp1_rwpf *rwpf)
1179 struct vsp1_video *video;
1180 const char *direction;
1183 video = devm_kzalloc(vsp1->dev, sizeof(*video), GFP_KERNEL);
1185 return ERR_PTR(-ENOMEM);
1187 rwpf->video = video;
1192 if (rwpf->entity.type == VSP1_ENTITY_RPF) {
1193 direction = "input";
1194 video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1195 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1196 video->video.vfl_dir = VFL_DIR_TX;
1198 direction = "output";
1199 video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1200 video->pad.flags = MEDIA_PAD_FL_SINK;
1201 video->video.vfl_dir = VFL_DIR_RX;
1204 mutex_init(&video->lock);
1205 spin_lock_init(&video->irqlock);
1206 INIT_LIST_HEAD(&video->irqqueue);
1208 /* Initialize the media entity... */
1209 ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
1211 return ERR_PTR(ret);
1213 /* ... and the format ... */
1214 rwpf->format.pixelformat = VSP1_VIDEO_DEF_FORMAT;
1215 rwpf->format.width = VSP1_VIDEO_DEF_WIDTH;
1216 rwpf->format.height = VSP1_VIDEO_DEF_HEIGHT;
1217 __vsp1_video_try_format(video, &rwpf->format, &rwpf->fmtinfo);
1219 /* ... and the video node... */
1220 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1221 video->video.fops = &vsp1_video_fops;
1222 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1223 rwpf->entity.subdev.name, direction);
1224 video->video.vfl_type = VFL_TYPE_GRABBER;
1225 video->video.release = video_device_release_empty;
1226 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1228 video_set_drvdata(&video->video, video);
1230 video->queue.type = video->type;
1231 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1232 video->queue.lock = &video->lock;
1233 video->queue.drv_priv = video;
1234 video->queue.buf_struct_size = sizeof(struct vsp1_vb2_buffer);
1235 video->queue.ops = &vsp1_video_queue_qops;
1236 video->queue.mem_ops = &vb2_dma_contig_memops;
1237 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1238 video->queue.dev = video->vsp1->bus_master;
1239 ret = vb2_queue_init(&video->queue);
1241 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1245 /* ... and register the video device. */
1246 video->video.queue = &video->queue;
1247 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1249 dev_err(video->vsp1->dev, "failed to register video device\n");
1256 vsp1_video_cleanup(video);
1257 return ERR_PTR(ret);
1260 void vsp1_video_cleanup(struct vsp1_video *video)
1262 if (video_is_registered(&video->video))
1263 video_unregister_device(&video->video);
1265 media_entity_cleanup(&video->video.entity);