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/sched.h>
18 #include <linux/slab.h>
19 #include <linux/v4l2-mediabus.h>
20 #include <linux/videodev2.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>
32 #include "vsp1_entity.h"
33 #include "vsp1_rwpf.h"
35 #include "vsp1_video.h"
37 #define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
38 #define VSP1_VIDEO_DEF_WIDTH 1024
39 #define VSP1_VIDEO_DEF_HEIGHT 768
41 #define VSP1_VIDEO_MIN_WIDTH 2U
42 #define VSP1_VIDEO_MAX_WIDTH 8190U
43 #define VSP1_VIDEO_MIN_HEIGHT 2U
44 #define VSP1_VIDEO_MAX_HEIGHT 8190U
46 /* -----------------------------------------------------------------------------
50 static const struct vsp1_format_info vsp1_video_formats[] = {
51 { V4L2_PIX_FMT_RGB332, MEDIA_BUS_FMT_ARGB8888_1X32,
52 VI6_FMT_RGB_332, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
53 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
54 1, { 8, 0, 0 }, false, false, 1, 1, false },
55 { V4L2_PIX_FMT_ARGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
56 VI6_FMT_ARGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
58 1, { 16, 0, 0 }, false, false, 1, 1, true },
59 { V4L2_PIX_FMT_XRGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
60 VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
62 1, { 16, 0, 0 }, false, false, 1, 1, true },
63 { V4L2_PIX_FMT_ARGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
64 VI6_FMT_ARGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
66 1, { 16, 0, 0 }, false, false, 1, 1, true },
67 { V4L2_PIX_FMT_XRGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
68 VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
70 1, { 16, 0, 0 }, false, false, 1, 1, false },
71 { V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_ARGB8888_1X32,
72 VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
74 1, { 16, 0, 0 }, false, false, 1, 1, false },
75 { V4L2_PIX_FMT_BGR24, MEDIA_BUS_FMT_ARGB8888_1X32,
76 VI6_FMT_BGR_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
77 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
78 1, { 24, 0, 0 }, false, false, 1, 1, false },
79 { V4L2_PIX_FMT_RGB24, MEDIA_BUS_FMT_ARGB8888_1X32,
80 VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
81 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
82 1, { 24, 0, 0 }, false, false, 1, 1, false },
83 { V4L2_PIX_FMT_ABGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
84 VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
85 1, { 32, 0, 0 }, false, false, 1, 1, true },
86 { V4L2_PIX_FMT_XBGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
87 VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
88 1, { 32, 0, 0 }, false, false, 1, 1, false },
89 { V4L2_PIX_FMT_ARGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
90 VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
91 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
92 1, { 32, 0, 0 }, false, false, 1, 1, true },
93 { V4L2_PIX_FMT_XRGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
94 VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
95 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
96 1, { 32, 0, 0 }, false, false, 1, 1, false },
97 { V4L2_PIX_FMT_UYVY, MEDIA_BUS_FMT_AYUV8_1X32,
98 VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
99 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
100 1, { 16, 0, 0 }, false, false, 2, 1, false },
101 { V4L2_PIX_FMT_VYUY, MEDIA_BUS_FMT_AYUV8_1X32,
102 VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
103 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
104 1, { 16, 0, 0 }, false, true, 2, 1, false },
105 { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_AYUV8_1X32,
106 VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
107 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
108 1, { 16, 0, 0 }, true, false, 2, 1, false },
109 { V4L2_PIX_FMT_YVYU, MEDIA_BUS_FMT_AYUV8_1X32,
110 VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
111 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
112 1, { 16, 0, 0 }, true, true, 2, 1, false },
113 { V4L2_PIX_FMT_NV12M, MEDIA_BUS_FMT_AYUV8_1X32,
114 VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
115 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
116 2, { 8, 16, 0 }, false, false, 2, 2, false },
117 { V4L2_PIX_FMT_NV21M, MEDIA_BUS_FMT_AYUV8_1X32,
118 VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
119 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
120 2, { 8, 16, 0 }, false, true, 2, 2, false },
121 { V4L2_PIX_FMT_NV16M, MEDIA_BUS_FMT_AYUV8_1X32,
122 VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
123 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
124 2, { 8, 16, 0 }, false, false, 2, 1, false },
125 { V4L2_PIX_FMT_NV61M, MEDIA_BUS_FMT_AYUV8_1X32,
126 VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
127 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
128 2, { 8, 16, 0 }, false, true, 2, 1, false },
129 { V4L2_PIX_FMT_YUV420M, MEDIA_BUS_FMT_AYUV8_1X32,
130 VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
131 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
132 3, { 8, 8, 8 }, false, false, 2, 2, false },
136 * vsp1_get_format_info - Retrieve format information for a 4CC
137 * @fourcc: the format 4CC
139 * Return a pointer to the format information structure corresponding to the
140 * given V4L2 format 4CC, or NULL if no corresponding format can be found.
142 static const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc)
146 for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {
147 const struct vsp1_format_info *info = &vsp1_video_formats[i];
149 if (info->fourcc == fourcc)
157 static struct v4l2_subdev *
158 vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
160 struct media_pad *remote;
162 remote = media_entity_remote_pad(local);
163 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
167 *pad = remote->index;
169 return media_entity_to_v4l2_subdev(remote->entity);
172 static int vsp1_video_verify_format(struct vsp1_video *video)
174 struct v4l2_subdev_format fmt;
175 struct v4l2_subdev *subdev;
178 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
182 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
183 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
185 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
187 if (video->fmtinfo->mbus != fmt.format.code ||
188 video->format.height != fmt.format.height ||
189 video->format.width != fmt.format.width)
195 static int __vsp1_video_try_format(struct vsp1_video *video,
196 struct v4l2_pix_format_mplane *pix,
197 const struct vsp1_format_info **fmtinfo)
199 static const u32 xrgb_formats[][2] = {
200 { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 },
201 { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 },
202 { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 },
203 { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 },
206 const struct vsp1_format_info *info;
207 unsigned int width = pix->width;
208 unsigned int height = pix->height;
211 /* Backward compatibility: replace deprecated RGB formats by their XRGB
212 * equivalent. This selects the format older userspace applications want
213 * while still exposing the new format.
215 for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) {
216 if (xrgb_formats[i][0] == pix->pixelformat) {
217 pix->pixelformat = xrgb_formats[i][1];
222 /* Retrieve format information and select the default format if the
223 * requested format isn't supported.
225 info = vsp1_get_format_info(pix->pixelformat);
227 info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
229 pix->pixelformat = info->fourcc;
230 pix->colorspace = V4L2_COLORSPACE_SRGB;
231 pix->field = V4L2_FIELD_NONE;
232 memset(pix->reserved, 0, sizeof(pix->reserved));
234 /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */
235 width = round_down(width, info->hsub);
236 height = round_down(height, info->vsub);
238 /* Clamp the width and height. */
239 pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH);
240 pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT,
241 VSP1_VIDEO_MAX_HEIGHT);
243 /* Compute and clamp the stride and image size. While not documented in
244 * the datasheet, strides not aligned to a multiple of 128 bytes result
245 * in image corruption.
247 for (i = 0; i < min(info->planes, 2U); ++i) {
248 unsigned int hsub = i > 0 ? info->hsub : 1;
249 unsigned int vsub = i > 0 ? info->vsub : 1;
250 unsigned int align = 128;
253 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
254 pix->width / hsub * info->bpp[i] / 8,
255 round_down(65535U, align));
257 pix->plane_fmt[i].bytesperline = round_up(bpl, align);
258 pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
259 * pix->height / vsub;
262 if (info->planes == 3) {
263 /* The second and third planes must have the same stride. */
264 pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
265 pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
268 pix->num_planes = info->planes;
276 /* -----------------------------------------------------------------------------
277 * Pipeline Management
280 static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
281 struct vsp1_rwpf *input,
282 struct vsp1_rwpf *output)
284 struct vsp1_entity *entity;
285 struct media_entity_enum ent_enum;
286 struct media_pad *pad;
288 bool bru_found = false;
290 input->location.left = 0;
291 input->location.top = 0;
293 rval = media_entity_enum_init(
294 &ent_enum, input->entity.pads[RWPF_PAD_SOURCE].graph_obj.mdev);
298 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
306 /* We've reached a video node, that shouldn't have happened. */
307 if (!is_media_entity_v4l2_subdev(pad->entity)) {
312 entity = to_vsp1_entity(
313 media_entity_to_v4l2_subdev(pad->entity));
315 /* A BRU is present in the pipeline, store the compose rectangle
316 * location in the input RPF for use when configuring the RPF.
318 if (entity->type == VSP1_ENTITY_BRU) {
319 struct vsp1_bru *bru = to_bru(&entity->subdev);
320 struct v4l2_rect *rect =
321 &bru->inputs[pad->index].compose;
323 bru->inputs[pad->index].rpf = input;
325 input->location.left = rect->left;
326 input->location.top = rect->top;
331 /* We've reached the WPF, we're done. */
332 if (entity->type == VSP1_ENTITY_WPF)
335 /* Ensure the branch has no loop. */
336 if (media_entity_enum_test_and_set(&ent_enum,
337 &entity->subdev.entity)) {
342 /* UDS can't be chained. */
343 if (entity->type == VSP1_ENTITY_UDS) {
350 pipe->uds_input = bru_found ? pipe->bru
354 /* Follow the source link. The link setup operations ensure
355 * that the output fan-out can't be more than one, there is thus
356 * no need to verify here that only a single source link is
359 pad = &entity->pads[entity->source_pad];
360 pad = media_entity_remote_pad(pad);
363 /* The last entity must be the output WPF. */
364 if (entity != &output->entity)
368 media_entity_enum_cleanup(&ent_enum);
373 static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
376 struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
379 for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
380 bru->inputs[i].rpf = NULL;
383 INIT_LIST_HEAD(&pipe->entities);
384 pipe->state = VSP1_PIPELINE_STOPPED;
385 pipe->buffers_ready = 0;
387 pipe->num_inputs = 0;
394 static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
395 struct vsp1_video *video)
397 struct media_entity_graph graph;
398 struct media_entity *entity = &video->video.entity;
399 struct media_device *mdev = entity->graph_obj.mdev;
403 mutex_lock(&mdev->graph_mutex);
405 /* Walk the graph to locate the entities and video nodes. */
406 ret = media_entity_graph_walk_init(&graph, mdev);
408 mutex_unlock(&mdev->graph_mutex);
412 media_entity_graph_walk_start(&graph, entity);
414 while ((entity = media_entity_graph_walk_next(&graph))) {
415 struct v4l2_subdev *subdev;
416 struct vsp1_rwpf *rwpf;
417 struct vsp1_entity *e;
419 if (is_media_entity_v4l2_io(entity)) {
424 subdev = media_entity_to_v4l2_subdev(entity);
425 e = to_vsp1_entity(subdev);
426 list_add_tail(&e->list_pipe, &pipe->entities);
428 if (e->type == VSP1_ENTITY_RPF) {
429 rwpf = to_rwpf(subdev);
430 pipe->inputs[pipe->num_inputs++] = rwpf;
431 rwpf->video.pipe_index = pipe->num_inputs;
432 } else if (e->type == VSP1_ENTITY_WPF) {
433 rwpf = to_rwpf(subdev);
434 pipe->output = to_rwpf(subdev);
435 rwpf->video.pipe_index = 0;
436 } else if (e->type == VSP1_ENTITY_LIF) {
438 } else if (e->type == VSP1_ENTITY_BRU) {
443 mutex_unlock(&mdev->graph_mutex);
445 media_entity_graph_walk_cleanup(&graph);
447 /* We need one output and at least one input. */
448 if (pipe->num_inputs == 0 || !pipe->output) {
453 /* Follow links downstream for each input and make sure the graph
454 * contains no loop and that all branches end at the output WPF.
456 for (i = 0; i < pipe->num_inputs; ++i) {
457 ret = vsp1_pipeline_validate_branch(pipe, pipe->inputs[i],
466 __vsp1_pipeline_cleanup(pipe);
470 static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
471 struct vsp1_video *video)
475 mutex_lock(&pipe->lock);
477 /* If we're the first user validate and initialize the pipeline. */
478 if (pipe->use_count == 0) {
479 ret = vsp1_pipeline_validate(pipe, video);
488 mutex_unlock(&pipe->lock);
492 static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
494 mutex_lock(&pipe->lock);
496 /* If we're the last user clean up the pipeline. */
497 if (--pipe->use_count == 0)
498 __vsp1_pipeline_cleanup(pipe);
500 mutex_unlock(&pipe->lock);
503 static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
505 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
507 vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
508 pipe->state = VSP1_PIPELINE_RUNNING;
509 pipe->buffers_ready = 0;
512 static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)
517 spin_lock_irqsave(&pipe->irqlock, flags);
518 stopped = pipe->state == VSP1_PIPELINE_STOPPED;
519 spin_unlock_irqrestore(&pipe->irqlock, flags);
524 static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
526 struct vsp1_entity *entity;
530 spin_lock_irqsave(&pipe->irqlock, flags);
531 if (pipe->state == VSP1_PIPELINE_RUNNING)
532 pipe->state = VSP1_PIPELINE_STOPPING;
533 spin_unlock_irqrestore(&pipe->irqlock, flags);
535 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
536 msecs_to_jiffies(500));
537 ret = ret == 0 ? -ETIMEDOUT : 0;
539 list_for_each_entry(entity, &pipe->entities, list_pipe) {
540 if (entity->route && entity->route->reg)
541 vsp1_write(entity->vsp1, entity->route->reg,
542 VI6_DPR_NODE_UNUSED);
544 v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
550 static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
554 mask = ((1 << pipe->num_inputs) - 1) << 1;
558 return pipe->buffers_ready == mask;
562 * vsp1_video_complete_buffer - Complete the current buffer
563 * @video: the video node
565 * This function completes the current buffer by filling its sequence number,
566 * time stamp and payload size, and hands it back to the videobuf core.
568 * When operating in DU output mode (deep pipeline to the DU through the LIF),
569 * the VSP1 needs to constantly supply frames to the display. In that case, if
570 * no other buffer is queued, reuse the one that has just been processed instead
571 * of handing it back to the videobuf core.
573 * Return the next queued buffer or NULL if the queue is empty.
575 static struct vsp1_video_buffer *
576 vsp1_video_complete_buffer(struct vsp1_video *video)
578 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
579 struct vsp1_video_buffer *next = NULL;
580 struct vsp1_video_buffer *done;
584 spin_lock_irqsave(&video->irqlock, flags);
586 if (list_empty(&video->irqqueue)) {
587 spin_unlock_irqrestore(&video->irqlock, flags);
591 done = list_first_entry(&video->irqqueue,
592 struct vsp1_video_buffer, queue);
594 /* In DU output mode reuse the buffer if the list is singular. */
595 if (pipe->lif && list_is_singular(&video->irqqueue)) {
596 spin_unlock_irqrestore(&video->irqlock, flags);
600 list_del(&done->queue);
602 if (!list_empty(&video->irqqueue))
603 next = list_first_entry(&video->irqqueue,
604 struct vsp1_video_buffer, queue);
606 spin_unlock_irqrestore(&video->irqlock, flags);
608 done->buf.sequence = video->sequence++;
609 done->buf.vb2_buf.timestamp = ktime_get_ns();
610 for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
611 vb2_set_plane_payload(&done->buf.vb2_buf, i, done->length[i]);
612 vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
617 static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
618 struct vsp1_video *video)
620 struct vsp1_video_buffer *buf;
623 buf = vsp1_video_complete_buffer(video);
627 spin_lock_irqsave(&pipe->irqlock, flags);
629 video->ops->queue(video, buf);
630 pipe->buffers_ready |= 1 << video->pipe_index;
632 spin_unlock_irqrestore(&pipe->irqlock, flags);
635 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
637 enum vsp1_pipeline_state state;
644 /* Complete buffers on all video nodes. */
645 for (i = 0; i < pipe->num_inputs; ++i)
646 vsp1_video_frame_end(pipe, &pipe->inputs[i]->video);
649 vsp1_video_frame_end(pipe, &pipe->output->video);
651 spin_lock_irqsave(&pipe->irqlock, flags);
654 pipe->state = VSP1_PIPELINE_STOPPED;
656 /* If a stop has been requested, mark the pipeline as stopped and
659 if (state == VSP1_PIPELINE_STOPPING) {
664 /* Restart the pipeline if ready. */
665 if (vsp1_pipeline_ready(pipe))
666 vsp1_pipeline_run(pipe);
669 spin_unlock_irqrestore(&pipe->irqlock, flags);
673 * Propagate the alpha value through the pipeline.
675 * As the UDS has restricted scaling capabilities when the alpha component needs
676 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
677 * value. The UDS then outputs a fixed alpha value which needs to be programmed
678 * from the input RPF alpha.
680 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
681 struct vsp1_entity *input,
684 struct vsp1_entity *entity;
685 struct media_pad *pad;
687 pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
690 if (!is_media_entity_v4l2_subdev(pad->entity))
693 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
695 /* The BRU background color has a fixed alpha value set to 255,
696 * the output alpha value is thus always equal to 255.
698 if (entity->type == VSP1_ENTITY_BRU)
701 if (entity->type == VSP1_ENTITY_UDS) {
702 struct vsp1_uds *uds = to_uds(&entity->subdev);
704 vsp1_uds_set_alpha(uds, alpha);
708 pad = &entity->pads[entity->source_pad];
709 pad = media_entity_remote_pad(pad);
713 void vsp1_pipelines_suspend(struct vsp1_device *vsp1)
719 /* To avoid increasing the system suspend time needlessly, loop over the
720 * pipelines twice, first to set them all to the stopping state, and then
721 * to wait for the stop to complete.
723 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
724 struct vsp1_rwpf *wpf = vsp1->wpf[i];
725 struct vsp1_pipeline *pipe;
730 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
734 spin_lock_irqsave(&pipe->irqlock, flags);
735 if (pipe->state == VSP1_PIPELINE_RUNNING)
736 pipe->state = VSP1_PIPELINE_STOPPING;
737 spin_unlock_irqrestore(&pipe->irqlock, flags);
740 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
741 struct vsp1_rwpf *wpf = vsp1->wpf[i];
742 struct vsp1_pipeline *pipe;
747 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
751 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
752 msecs_to_jiffies(500));
754 dev_warn(vsp1->dev, "pipeline %u stop timeout\n",
759 void vsp1_pipelines_resume(struct vsp1_device *vsp1)
763 /* Resume pipeline all running pipelines. */
764 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
765 struct vsp1_rwpf *wpf = vsp1->wpf[i];
766 struct vsp1_pipeline *pipe;
771 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
775 if (vsp1_pipeline_ready(pipe))
776 vsp1_pipeline_run(pipe);
780 /* -----------------------------------------------------------------------------
781 * videobuf2 Queue Operations
785 vsp1_video_queue_setup(struct vb2_queue *vq,
786 unsigned int *nbuffers, unsigned int *nplanes,
787 unsigned int sizes[], void *alloc_ctxs[])
789 struct vsp1_video *video = vb2_get_drv_priv(vq);
790 const struct v4l2_pix_format_mplane *format = &video->format;
794 if (*nplanes != format->num_planes)
797 for (i = 0; i < *nplanes; i++) {
798 if (sizes[i] < format->plane_fmt[i].sizeimage)
800 alloc_ctxs[i] = video->alloc_ctx;
805 *nplanes = format->num_planes;
807 for (i = 0; i < format->num_planes; ++i) {
808 sizes[i] = format->plane_fmt[i].sizeimage;
809 alloc_ctxs[i] = video->alloc_ctx;
815 static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
817 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
818 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
819 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vbuf);
820 const struct v4l2_pix_format_mplane *format = &video->format;
823 if (vb->num_planes < format->num_planes)
826 for (i = 0; i < vb->num_planes; ++i) {
827 buf->addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
828 buf->length[i] = vb2_plane_size(vb, i);
830 if (buf->length[i] < format->plane_fmt[i].sizeimage)
837 static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
839 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
840 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
841 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
842 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vbuf);
846 spin_lock_irqsave(&video->irqlock, flags);
847 empty = list_empty(&video->irqqueue);
848 list_add_tail(&buf->queue, &video->irqqueue);
849 spin_unlock_irqrestore(&video->irqlock, flags);
854 spin_lock_irqsave(&pipe->irqlock, flags);
856 video->ops->queue(video, buf);
857 pipe->buffers_ready |= 1 << video->pipe_index;
859 if (vb2_is_streaming(&video->queue) &&
860 vsp1_pipeline_ready(pipe))
861 vsp1_pipeline_run(pipe);
863 spin_unlock_irqrestore(&pipe->irqlock, flags);
866 static void vsp1_entity_route_setup(struct vsp1_entity *source)
868 struct vsp1_entity *sink;
870 if (source->route->reg == 0)
873 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
874 vsp1_write(source->vsp1, source->route->reg,
875 sink->route->inputs[source->sink_pad]);
878 static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
880 struct vsp1_video *video = vb2_get_drv_priv(vq);
881 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
882 struct vsp1_entity *entity;
886 mutex_lock(&pipe->lock);
887 if (pipe->stream_count == pipe->num_video - 1) {
889 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
891 /* If a BRU is present in the pipeline before the UDS,
892 * the alpha component doesn't need to be scaled as the
893 * BRU output alpha value is fixed to 255. Otherwise we
894 * need to scale the alpha component only when available
897 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
898 uds->scale_alpha = false;
900 struct vsp1_rwpf *rpf =
901 to_rwpf(&pipe->uds_input->subdev);
903 uds->scale_alpha = rpf->video.fmtinfo->alpha;
907 list_for_each_entry(entity, &pipe->entities, list_pipe) {
908 vsp1_entity_route_setup(entity);
910 ret = v4l2_subdev_call(&entity->subdev, video,
913 mutex_unlock(&pipe->lock);
919 pipe->stream_count++;
920 mutex_unlock(&pipe->lock);
922 spin_lock_irqsave(&pipe->irqlock, flags);
923 if (vsp1_pipeline_ready(pipe))
924 vsp1_pipeline_run(pipe);
925 spin_unlock_irqrestore(&pipe->irqlock, flags);
930 static void vsp1_video_stop_streaming(struct vb2_queue *vq)
932 struct vsp1_video *video = vb2_get_drv_priv(vq);
933 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
934 struct vsp1_video_buffer *buffer;
938 mutex_lock(&pipe->lock);
939 if (--pipe->stream_count == 0) {
940 /* Stop the pipeline. */
941 ret = vsp1_pipeline_stop(pipe);
942 if (ret == -ETIMEDOUT)
943 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
945 mutex_unlock(&pipe->lock);
947 vsp1_pipeline_cleanup(pipe);
948 media_entity_pipeline_stop(&video->video.entity);
950 /* Remove all buffers from the IRQ queue. */
951 spin_lock_irqsave(&video->irqlock, flags);
952 list_for_each_entry(buffer, &video->irqqueue, queue)
953 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
954 INIT_LIST_HEAD(&video->irqqueue);
955 spin_unlock_irqrestore(&video->irqlock, flags);
958 static struct vb2_ops vsp1_video_queue_qops = {
959 .queue_setup = vsp1_video_queue_setup,
960 .buf_prepare = vsp1_video_buffer_prepare,
961 .buf_queue = vsp1_video_buffer_queue,
962 .wait_prepare = vb2_ops_wait_prepare,
963 .wait_finish = vb2_ops_wait_finish,
964 .start_streaming = vsp1_video_start_streaming,
965 .stop_streaming = vsp1_video_stop_streaming,
968 /* -----------------------------------------------------------------------------
973 vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
975 struct v4l2_fh *vfh = file->private_data;
976 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
978 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
979 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
980 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
982 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
983 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
984 | V4L2_CAP_STREAMING;
986 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
987 | V4L2_CAP_STREAMING;
989 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
990 strlcpy(cap->card, video->video.name, sizeof(cap->card));
991 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
992 dev_name(video->vsp1->dev));
998 vsp1_video_get_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 mutex_lock(&video->lock);
1007 format->fmt.pix_mp = video->format;
1008 mutex_unlock(&video->lock);
1014 vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
1016 struct v4l2_fh *vfh = file->private_data;
1017 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1019 if (format->type != video->queue.type)
1022 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
1026 vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1028 struct v4l2_fh *vfh = file->private_data;
1029 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1030 const struct vsp1_format_info *info;
1033 if (format->type != video->queue.type)
1036 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1040 mutex_lock(&video->lock);
1042 if (vb2_is_busy(&video->queue)) {
1047 video->format = format->fmt.pix_mp;
1048 video->fmtinfo = info;
1051 mutex_unlock(&video->lock);
1056 vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1058 struct v4l2_fh *vfh = file->private_data;
1059 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1060 struct vsp1_pipeline *pipe;
1063 if (video->queue.owner && video->queue.owner != file->private_data)
1066 video->sequence = 0;
1068 /* Start streaming on the pipeline. No link touching an entity in the
1069 * pipeline can be activated or deactivated once streaming is started.
1071 * Use the VSP1 pipeline object embedded in the first video object that
1074 pipe = video->video.entity.pipe
1075 ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
1077 ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
1081 /* Verify that the configured format matches the output of the connected
1084 ret = vsp1_video_verify_format(video);
1088 ret = vsp1_pipeline_init(pipe, video);
1092 /* Start the queue. */
1093 ret = vb2_streamon(&video->queue, type);
1100 vsp1_pipeline_cleanup(pipe);
1102 media_entity_pipeline_stop(&video->video.entity);
1106 static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1107 .vidioc_querycap = vsp1_video_querycap,
1108 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1109 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1110 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1111 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1112 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1113 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1114 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1115 .vidioc_querybuf = vb2_ioctl_querybuf,
1116 .vidioc_qbuf = vb2_ioctl_qbuf,
1117 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1118 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1119 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1120 .vidioc_streamon = vsp1_video_streamon,
1121 .vidioc_streamoff = vb2_ioctl_streamoff,
1124 /* -----------------------------------------------------------------------------
1125 * V4L2 File Operations
1128 static int vsp1_video_open(struct file *file)
1130 struct vsp1_video *video = video_drvdata(file);
1131 struct v4l2_fh *vfh;
1134 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1138 v4l2_fh_init(vfh, &video->video);
1141 file->private_data = vfh;
1143 ret = vsp1_device_get(video->vsp1);
1152 static int vsp1_video_release(struct file *file)
1154 struct vsp1_video *video = video_drvdata(file);
1155 struct v4l2_fh *vfh = file->private_data;
1157 mutex_lock(&video->lock);
1158 if (video->queue.owner == vfh) {
1159 vb2_queue_release(&video->queue);
1160 video->queue.owner = NULL;
1162 mutex_unlock(&video->lock);
1164 vsp1_device_put(video->vsp1);
1166 v4l2_fh_release(file);
1168 file->private_data = NULL;
1173 static struct v4l2_file_operations vsp1_video_fops = {
1174 .owner = THIS_MODULE,
1175 .unlocked_ioctl = video_ioctl2,
1176 .open = vsp1_video_open,
1177 .release = vsp1_video_release,
1178 .poll = vb2_fop_poll,
1179 .mmap = vb2_fop_mmap,
1182 /* -----------------------------------------------------------------------------
1183 * Initialization and Cleanup
1186 int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
1188 const char *direction;
1191 switch (video->type) {
1192 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1193 direction = "output";
1194 video->pad.flags = MEDIA_PAD_FL_SINK;
1197 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1198 direction = "input";
1199 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1200 video->video.vfl_dir = VFL_DIR_TX;
1209 mutex_init(&video->lock);
1210 spin_lock_init(&video->irqlock);
1211 INIT_LIST_HEAD(&video->irqqueue);
1213 mutex_init(&video->pipe.lock);
1214 spin_lock_init(&video->pipe.irqlock);
1215 INIT_LIST_HEAD(&video->pipe.entities);
1216 init_waitqueue_head(&video->pipe.wq);
1217 video->pipe.state = VSP1_PIPELINE_STOPPED;
1219 /* Initialize the media entity... */
1220 ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
1224 /* ... and the format ... */
1225 video->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
1226 video->format.pixelformat = video->fmtinfo->fourcc;
1227 video->format.colorspace = V4L2_COLORSPACE_SRGB;
1228 video->format.field = V4L2_FIELD_NONE;
1229 video->format.width = VSP1_VIDEO_DEF_WIDTH;
1230 video->format.height = VSP1_VIDEO_DEF_HEIGHT;
1231 video->format.num_planes = 1;
1232 video->format.plane_fmt[0].bytesperline =
1233 video->format.width * video->fmtinfo->bpp[0] / 8;
1234 video->format.plane_fmt[0].sizeimage =
1235 video->format.plane_fmt[0].bytesperline * video->format.height;
1237 /* ... and the video node... */
1238 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1239 video->video.fops = &vsp1_video_fops;
1240 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1241 rwpf->subdev.name, direction);
1242 video->video.vfl_type = VFL_TYPE_GRABBER;
1243 video->video.release = video_device_release_empty;
1244 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1246 video_set_drvdata(&video->video, video);
1248 /* ... and the buffers queue... */
1249 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
1250 if (IS_ERR(video->alloc_ctx)) {
1251 ret = PTR_ERR(video->alloc_ctx);
1255 video->queue.type = video->type;
1256 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1257 video->queue.lock = &video->lock;
1258 video->queue.drv_priv = video;
1259 video->queue.buf_struct_size = sizeof(struct vsp1_video_buffer);
1260 video->queue.ops = &vsp1_video_queue_qops;
1261 video->queue.mem_ops = &vb2_dma_contig_memops;
1262 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1263 ret = vb2_queue_init(&video->queue);
1265 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1269 /* ... and register the video device. */
1270 video->video.queue = &video->queue;
1271 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1273 dev_err(video->vsp1->dev, "failed to register video device\n");
1280 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1281 vsp1_video_cleanup(video);
1285 void vsp1_video_cleanup(struct vsp1_video *video)
1287 if (video_is_registered(&video->video))
1288 video_unregister_device(&video->video);
1290 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1291 media_entity_cleanup(&video->video.entity);