2 * vsp1_video.c -- R-Car VSP1 Video Node
4 * Copyright (C) 2013-2014 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-core.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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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, V4L2_MBUS_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 == NULL ||
164 media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
168 *pad = remote->index;
170 return media_entity_to_v4l2_subdev(remote->entity);
173 static int vsp1_video_verify_format(struct vsp1_video *video)
175 struct v4l2_subdev_format fmt;
176 struct v4l2_subdev *subdev;
179 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
183 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
184 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
186 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
188 if (video->fmtinfo->mbus != fmt.format.code ||
189 video->format.height != fmt.format.height ||
190 video->format.width != fmt.format.width)
196 static int __vsp1_video_try_format(struct vsp1_video *video,
197 struct v4l2_pix_format_mplane *pix,
198 const struct vsp1_format_info **fmtinfo)
200 static const u32 xrgb_formats[][2] = {
201 { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 },
202 { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 },
203 { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 },
204 { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 },
207 const struct vsp1_format_info *info;
208 unsigned int width = pix->width;
209 unsigned int height = pix->height;
212 /* Backward compatibility: replace deprecated RGB formats by their XRGB
213 * equivalent. This selects the format older userspace applications want
214 * while still exposing the new format.
216 for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) {
217 if (xrgb_formats[i][0] == pix->pixelformat) {
218 pix->pixelformat = xrgb_formats[i][1];
223 /* Retrieve format information and select the default format if the
224 * requested format isn't supported.
226 info = vsp1_get_format_info(pix->pixelformat);
228 info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
230 pix->pixelformat = info->fourcc;
231 pix->colorspace = V4L2_COLORSPACE_SRGB;
232 pix->field = V4L2_FIELD_NONE;
233 memset(pix->reserved, 0, sizeof(pix->reserved));
235 /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */
236 width = round_down(width, info->hsub);
237 height = round_down(height, info->vsub);
239 /* Clamp the width and height. */
240 pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH);
241 pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT,
242 VSP1_VIDEO_MAX_HEIGHT);
244 /* Compute and clamp the stride and image size. While not documented in
245 * the datasheet, strides not aligned to a multiple of 128 bytes result
246 * in image corruption.
248 for (i = 0; i < max(info->planes, 2U); ++i) {
249 unsigned int hsub = i > 0 ? info->hsub : 1;
250 unsigned int vsub = i > 0 ? info->vsub : 1;
251 unsigned int align = 128;
254 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
255 pix->width / hsub * info->bpp[i] / 8,
256 round_down(65535U, align));
258 pix->plane_fmt[i].bytesperline = round_up(bpl, align);
259 pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
260 * pix->height / vsub;
263 if (info->planes == 3) {
264 /* The second and third planes must have the same stride. */
265 pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
266 pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
269 pix->num_planes = info->planes;
278 vsp1_video_format_adjust(struct vsp1_video *video,
279 const struct v4l2_pix_format_mplane *format,
280 struct v4l2_pix_format_mplane *adjust)
285 __vsp1_video_try_format(video, adjust, NULL);
287 if (format->width != adjust->width ||
288 format->height != adjust->height ||
289 format->pixelformat != adjust->pixelformat ||
290 format->num_planes != adjust->num_planes)
293 for (i = 0; i < format->num_planes; ++i) {
294 if (format->plane_fmt[i].bytesperline !=
295 adjust->plane_fmt[i].bytesperline)
298 adjust->plane_fmt[i].sizeimage =
299 max(adjust->plane_fmt[i].sizeimage,
300 format->plane_fmt[i].sizeimage);
306 /* -----------------------------------------------------------------------------
307 * Pipeline Management
310 static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
311 struct vsp1_rwpf *input,
312 struct vsp1_rwpf *output)
314 struct vsp1_entity *entity;
315 unsigned int entities = 0;
316 struct media_pad *pad;
317 bool bru_found = false;
319 input->location.left = 0;
320 input->location.top = 0;
322 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
328 /* We've reached a video node, that shouldn't have happened. */
329 if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
332 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
334 /* A BRU is present in the pipeline, store the compose rectangle
335 * location in the input RPF for use when configuring the RPF.
337 if (entity->type == VSP1_ENTITY_BRU) {
338 struct vsp1_bru *bru = to_bru(&entity->subdev);
339 struct v4l2_rect *rect =
340 &bru->inputs[pad->index].compose;
342 bru->inputs[pad->index].rpf = input;
344 input->location.left = rect->left;
345 input->location.top = rect->top;
350 /* We've reached the WPF, we're done. */
351 if (entity->type == VSP1_ENTITY_WPF)
354 /* Ensure the branch has no loop. */
355 if (entities & (1 << entity->subdev.entity.id))
358 entities |= 1 << entity->subdev.entity.id;
360 /* UDS can't be chained. */
361 if (entity->type == VSP1_ENTITY_UDS) {
366 pipe->uds_input = bru_found ? pipe->bru
370 /* Follow the source link. The link setup operations ensure
371 * that the output fan-out can't be more than one, there is thus
372 * no need to verify here that only a single source link is
375 pad = &entity->pads[entity->source_pad];
376 pad = media_entity_remote_pad(pad);
379 /* The last entity must be the output WPF. */
380 if (entity != &output->entity)
386 static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
389 struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
392 for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
393 bru->inputs[i].rpf = NULL;
396 INIT_LIST_HEAD(&pipe->entities);
397 pipe->state = VSP1_PIPELINE_STOPPED;
398 pipe->buffers_ready = 0;
400 pipe->num_inputs = 0;
407 static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
408 struct vsp1_video *video)
410 struct media_entity_graph graph;
411 struct media_entity *entity = &video->video.entity;
412 struct media_device *mdev = entity->parent;
416 mutex_lock(&mdev->graph_mutex);
418 /* Walk the graph to locate the entities and video nodes. */
419 media_entity_graph_walk_start(&graph, entity);
421 while ((entity = media_entity_graph_walk_next(&graph))) {
422 struct v4l2_subdev *subdev;
423 struct vsp1_rwpf *rwpf;
424 struct vsp1_entity *e;
426 if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
431 subdev = media_entity_to_v4l2_subdev(entity);
432 e = to_vsp1_entity(subdev);
433 list_add_tail(&e->list_pipe, &pipe->entities);
435 if (e->type == VSP1_ENTITY_RPF) {
436 rwpf = to_rwpf(subdev);
437 pipe->inputs[pipe->num_inputs++] = rwpf;
438 rwpf->video.pipe_index = pipe->num_inputs;
439 } else if (e->type == VSP1_ENTITY_WPF) {
440 rwpf = to_rwpf(subdev);
441 pipe->output = to_rwpf(subdev);
442 rwpf->video.pipe_index = 0;
443 } else if (e->type == VSP1_ENTITY_LIF) {
445 } else if (e->type == VSP1_ENTITY_BRU) {
450 mutex_unlock(&mdev->graph_mutex);
452 /* We need one output and at least one input. */
453 if (pipe->num_inputs == 0 || !pipe->output) {
458 /* Follow links downstream for each input and make sure the graph
459 * contains no loop and that all branches end at the output WPF.
461 for (i = 0; i < pipe->num_inputs; ++i) {
462 ret = vsp1_pipeline_validate_branch(pipe, pipe->inputs[i],
471 __vsp1_pipeline_cleanup(pipe);
475 static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
476 struct vsp1_video *video)
480 mutex_lock(&pipe->lock);
482 /* If we're the first user validate and initialize the pipeline. */
483 if (pipe->use_count == 0) {
484 ret = vsp1_pipeline_validate(pipe, video);
493 mutex_unlock(&pipe->lock);
497 static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
499 mutex_lock(&pipe->lock);
501 /* If we're the last user clean up the pipeline. */
502 if (--pipe->use_count == 0)
503 __vsp1_pipeline_cleanup(pipe);
505 mutex_unlock(&pipe->lock);
508 static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
510 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
512 vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
513 pipe->state = VSP1_PIPELINE_RUNNING;
514 pipe->buffers_ready = 0;
517 static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
519 struct vsp1_entity *entity;
523 spin_lock_irqsave(&pipe->irqlock, flags);
524 if (pipe->state == VSP1_PIPELINE_RUNNING)
525 pipe->state = VSP1_PIPELINE_STOPPING;
526 spin_unlock_irqrestore(&pipe->irqlock, flags);
528 ret = wait_event_timeout(pipe->wq, pipe->state == VSP1_PIPELINE_STOPPED,
529 msecs_to_jiffies(500));
530 ret = ret == 0 ? -ETIMEDOUT : 0;
532 list_for_each_entry(entity, &pipe->entities, list_pipe) {
533 if (entity->route && entity->route->reg)
534 vsp1_write(entity->vsp1, entity->route->reg,
535 VI6_DPR_NODE_UNUSED);
537 v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
543 static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
547 mask = ((1 << pipe->num_inputs) - 1) << 1;
551 return pipe->buffers_ready == mask;
555 * vsp1_video_complete_buffer - Complete the current buffer
556 * @video: the video node
558 * This function completes the current buffer by filling its sequence number,
559 * time stamp and payload size, and hands it back to the videobuf core.
561 * When operating in DU output mode (deep pipeline to the DU through the LIF),
562 * the VSP1 needs to constantly supply frames to the display. In that case, if
563 * no other buffer is queued, reuse the one that has just been processed instead
564 * of handing it back to the videobuf core.
566 * Return the next queued buffer or NULL if the queue is empty.
568 static struct vsp1_video_buffer *
569 vsp1_video_complete_buffer(struct vsp1_video *video)
571 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
572 struct vsp1_video_buffer *next = NULL;
573 struct vsp1_video_buffer *done;
577 spin_lock_irqsave(&video->irqlock, flags);
579 if (list_empty(&video->irqqueue)) {
580 spin_unlock_irqrestore(&video->irqlock, flags);
584 done = list_first_entry(&video->irqqueue,
585 struct vsp1_video_buffer, queue);
587 /* In DU output mode reuse the buffer if the list is singular. */
588 if (pipe->lif && list_is_singular(&video->irqqueue)) {
589 spin_unlock_irqrestore(&video->irqlock, flags);
593 list_del(&done->queue);
595 if (!list_empty(&video->irqqueue))
596 next = list_first_entry(&video->irqqueue,
597 struct vsp1_video_buffer, queue);
599 spin_unlock_irqrestore(&video->irqlock, flags);
601 done->buf.v4l2_buf.sequence = video->sequence++;
602 v4l2_get_timestamp(&done->buf.v4l2_buf.timestamp);
603 for (i = 0; i < done->buf.num_planes; ++i)
604 vb2_set_plane_payload(&done->buf, i, done->length[i]);
605 vb2_buffer_done(&done->buf, VB2_BUF_STATE_DONE);
610 static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
611 struct vsp1_video *video)
613 struct vsp1_video_buffer *buf;
616 buf = vsp1_video_complete_buffer(video);
620 spin_lock_irqsave(&pipe->irqlock, flags);
622 video->ops->queue(video, buf);
623 pipe->buffers_ready |= 1 << video->pipe_index;
625 spin_unlock_irqrestore(&pipe->irqlock, flags);
628 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
630 enum vsp1_pipeline_state state;
637 /* Complete buffers on all video nodes. */
638 for (i = 0; i < pipe->num_inputs; ++i)
639 vsp1_video_frame_end(pipe, &pipe->inputs[i]->video);
642 vsp1_video_frame_end(pipe, &pipe->output->video);
644 spin_lock_irqsave(&pipe->irqlock, flags);
647 pipe->state = VSP1_PIPELINE_STOPPED;
649 /* If a stop has been requested, mark the pipeline as stopped and
652 if (state == VSP1_PIPELINE_STOPPING) {
657 /* Restart the pipeline if ready. */
658 if (vsp1_pipeline_ready(pipe))
659 vsp1_pipeline_run(pipe);
662 spin_unlock_irqrestore(&pipe->irqlock, flags);
666 * Propagate the alpha value through the pipeline.
668 * As the UDS has restricted scaling capabilities when the alpha component needs
669 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
670 * value. The UDS then outputs a fixed alpha value which needs to be programmed
671 * from the input RPF alpha.
673 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
674 struct vsp1_entity *input,
677 struct vsp1_entity *entity;
678 struct media_pad *pad;
680 pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
683 if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
686 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
688 /* The BRU background color has a fixed alpha value set to 255,
689 * the output alpha value is thus always equal to 255.
691 if (entity->type == VSP1_ENTITY_BRU)
694 if (entity->type == VSP1_ENTITY_UDS) {
695 struct vsp1_uds *uds = to_uds(&entity->subdev);
697 vsp1_uds_set_alpha(uds, alpha);
701 pad = &entity->pads[entity->source_pad];
702 pad = media_entity_remote_pad(pad);
706 /* -----------------------------------------------------------------------------
707 * videobuf2 Queue Operations
711 vsp1_video_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
712 unsigned int *nbuffers, unsigned int *nplanes,
713 unsigned int sizes[], void *alloc_ctxs[])
715 struct vsp1_video *video = vb2_get_drv_priv(vq);
716 const struct v4l2_pix_format_mplane *format;
717 struct v4l2_pix_format_mplane pix_mp;
721 /* Make sure the format is valid and adjust the sizeimage field
724 if (!vsp1_video_format_adjust(video, &fmt->fmt.pix_mp, &pix_mp))
729 format = &video->format;
732 *nplanes = format->num_planes;
734 for (i = 0; i < format->num_planes; ++i) {
735 sizes[i] = format->plane_fmt[i].sizeimage;
736 alloc_ctxs[i] = video->alloc_ctx;
742 static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
744 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
745 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vb);
746 const struct v4l2_pix_format_mplane *format = &video->format;
749 if (vb->num_planes < format->num_planes)
752 for (i = 0; i < vb->num_planes; ++i) {
753 buf->addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
754 buf->length[i] = vb2_plane_size(vb, i);
756 if (buf->length[i] < format->plane_fmt[i].sizeimage)
763 static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
765 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
766 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
767 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vb);
771 spin_lock_irqsave(&video->irqlock, flags);
772 empty = list_empty(&video->irqqueue);
773 list_add_tail(&buf->queue, &video->irqqueue);
774 spin_unlock_irqrestore(&video->irqlock, flags);
779 spin_lock_irqsave(&pipe->irqlock, flags);
781 video->ops->queue(video, buf);
782 pipe->buffers_ready |= 1 << video->pipe_index;
784 if (vb2_is_streaming(&video->queue) &&
785 vsp1_pipeline_ready(pipe))
786 vsp1_pipeline_run(pipe);
788 spin_unlock_irqrestore(&pipe->irqlock, flags);
791 static void vsp1_entity_route_setup(struct vsp1_entity *source)
793 struct vsp1_entity *sink;
795 if (source->route->reg == 0)
798 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
799 vsp1_write(source->vsp1, source->route->reg,
800 sink->route->inputs[source->sink_pad]);
803 static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
805 struct vsp1_video *video = vb2_get_drv_priv(vq);
806 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
807 struct vsp1_entity *entity;
811 mutex_lock(&pipe->lock);
812 if (pipe->stream_count == pipe->num_video - 1) {
814 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
816 /* If a BRU is present in the pipeline before the UDS,
817 * the alpha component doesn't need to be scaled as the
818 * BRU output alpha value is fixed to 255. Otherwise we
819 * need to scale the alpha component only when available
822 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
823 uds->scale_alpha = false;
825 struct vsp1_rwpf *rpf =
826 to_rwpf(&pipe->uds_input->subdev);
828 uds->scale_alpha = rpf->video.fmtinfo->alpha;
832 list_for_each_entry(entity, &pipe->entities, list_pipe) {
833 vsp1_entity_route_setup(entity);
835 ret = v4l2_subdev_call(&entity->subdev, video,
838 mutex_unlock(&pipe->lock);
844 pipe->stream_count++;
845 mutex_unlock(&pipe->lock);
847 spin_lock_irqsave(&pipe->irqlock, flags);
848 if (vsp1_pipeline_ready(pipe))
849 vsp1_pipeline_run(pipe);
850 spin_unlock_irqrestore(&pipe->irqlock, flags);
855 static int vsp1_video_stop_streaming(struct vb2_queue *vq)
857 struct vsp1_video *video = vb2_get_drv_priv(vq);
858 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
859 struct vsp1_video_buffer *buffer;
863 mutex_lock(&pipe->lock);
864 if (--pipe->stream_count == 0) {
865 /* Stop the pipeline. */
866 ret = vsp1_pipeline_stop(pipe);
867 if (ret == -ETIMEDOUT)
868 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
870 mutex_unlock(&pipe->lock);
872 vsp1_pipeline_cleanup(pipe);
873 media_entity_pipeline_stop(&video->video.entity);
875 /* Remove all buffers from the IRQ queue. */
876 spin_lock_irqsave(&video->irqlock, flags);
877 list_for_each_entry(buffer, &video->irqqueue, queue)
878 vb2_buffer_done(&buffer->buf, VB2_BUF_STATE_ERROR);
879 INIT_LIST_HEAD(&video->irqqueue);
880 spin_unlock_irqrestore(&video->irqlock, flags);
885 static struct vb2_ops vsp1_video_queue_qops = {
886 .queue_setup = vsp1_video_queue_setup,
887 .buf_prepare = vsp1_video_buffer_prepare,
888 .buf_queue = vsp1_video_buffer_queue,
889 .wait_prepare = vb2_ops_wait_prepare,
890 .wait_finish = vb2_ops_wait_finish,
891 .start_streaming = vsp1_video_start_streaming,
892 .stop_streaming = vsp1_video_stop_streaming,
895 /* -----------------------------------------------------------------------------
900 vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
902 struct v4l2_fh *vfh = file->private_data;
903 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
905 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
906 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
907 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
909 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
910 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
911 | V4L2_CAP_STREAMING;
913 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
914 | V4L2_CAP_STREAMING;
916 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
917 strlcpy(cap->card, video->video.name, sizeof(cap->card));
918 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
919 dev_name(video->vsp1->dev));
925 vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
927 struct v4l2_fh *vfh = file->private_data;
928 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
930 if (format->type != video->queue.type)
933 mutex_lock(&video->lock);
934 format->fmt.pix_mp = video->format;
935 mutex_unlock(&video->lock);
941 vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
943 struct v4l2_fh *vfh = file->private_data;
944 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
946 if (format->type != video->queue.type)
949 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
953 vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
955 struct v4l2_fh *vfh = file->private_data;
956 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
957 const struct vsp1_format_info *info;
960 if (format->type != video->queue.type)
963 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
967 mutex_lock(&video->lock);
969 if (vb2_is_busy(&video->queue)) {
974 video->format = format->fmt.pix_mp;
975 video->fmtinfo = info;
978 mutex_unlock(&video->lock);
983 vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
985 struct v4l2_fh *vfh = file->private_data;
986 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
987 struct vsp1_pipeline *pipe;
990 if (video->queue.owner && video->queue.owner != file->private_data)
995 /* Start streaming on the pipeline. No link touching an entity in the
996 * pipeline can be activated or deactivated once streaming is started.
998 * Use the VSP1 pipeline object embedded in the first video object that
1001 pipe = video->video.entity.pipe
1002 ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
1004 ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
1008 /* Verify that the configured format matches the output of the connected
1011 ret = vsp1_video_verify_format(video);
1015 ret = vsp1_pipeline_init(pipe, video);
1019 /* Start the queue. */
1020 ret = vb2_streamon(&video->queue, type);
1027 vsp1_pipeline_cleanup(pipe);
1029 media_entity_pipeline_stop(&video->video.entity);
1033 static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1034 .vidioc_querycap = vsp1_video_querycap,
1035 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1036 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1037 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1038 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1039 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1040 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1041 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1042 .vidioc_querybuf = vb2_ioctl_querybuf,
1043 .vidioc_qbuf = vb2_ioctl_qbuf,
1044 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1045 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1046 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1047 .vidioc_streamon = vsp1_video_streamon,
1048 .vidioc_streamoff = vb2_ioctl_streamoff,
1051 /* -----------------------------------------------------------------------------
1052 * V4L2 File Operations
1055 static int vsp1_video_open(struct file *file)
1057 struct vsp1_video *video = video_drvdata(file);
1058 struct v4l2_fh *vfh;
1061 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1065 v4l2_fh_init(vfh, &video->video);
1068 file->private_data = vfh;
1070 ret = vsp1_device_get(video->vsp1);
1079 static int vsp1_video_release(struct file *file)
1081 struct vsp1_video *video = video_drvdata(file);
1082 struct v4l2_fh *vfh = file->private_data;
1084 mutex_lock(&video->lock);
1085 if (video->queue.owner == vfh) {
1086 vb2_queue_release(&video->queue);
1087 video->queue.owner = NULL;
1089 mutex_unlock(&video->lock);
1091 vsp1_device_put(video->vsp1);
1093 v4l2_fh_release(file);
1095 file->private_data = NULL;
1100 static struct v4l2_file_operations vsp1_video_fops = {
1101 .owner = THIS_MODULE,
1102 .unlocked_ioctl = video_ioctl2,
1103 .open = vsp1_video_open,
1104 .release = vsp1_video_release,
1105 .poll = vb2_fop_poll,
1106 .mmap = vb2_fop_mmap,
1109 /* -----------------------------------------------------------------------------
1110 * Initialization and Cleanup
1113 int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
1115 const char *direction;
1118 switch (video->type) {
1119 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1120 direction = "output";
1121 video->pad.flags = MEDIA_PAD_FL_SINK;
1124 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1125 direction = "input";
1126 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1127 video->video.vfl_dir = VFL_DIR_TX;
1136 mutex_init(&video->lock);
1137 spin_lock_init(&video->irqlock);
1138 INIT_LIST_HEAD(&video->irqqueue);
1140 mutex_init(&video->pipe.lock);
1141 spin_lock_init(&video->pipe.irqlock);
1142 INIT_LIST_HEAD(&video->pipe.entities);
1143 init_waitqueue_head(&video->pipe.wq);
1144 video->pipe.state = VSP1_PIPELINE_STOPPED;
1146 /* Initialize the media entity... */
1147 ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
1151 /* ... and the format ... */
1152 video->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
1153 video->format.pixelformat = video->fmtinfo->fourcc;
1154 video->format.colorspace = V4L2_COLORSPACE_SRGB;
1155 video->format.field = V4L2_FIELD_NONE;
1156 video->format.width = VSP1_VIDEO_DEF_WIDTH;
1157 video->format.height = VSP1_VIDEO_DEF_HEIGHT;
1158 video->format.num_planes = 1;
1159 video->format.plane_fmt[0].bytesperline =
1160 video->format.width * video->fmtinfo->bpp[0] / 8;
1161 video->format.plane_fmt[0].sizeimage =
1162 video->format.plane_fmt[0].bytesperline * video->format.height;
1164 /* ... and the video node... */
1165 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1166 video->video.fops = &vsp1_video_fops;
1167 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1168 rwpf->subdev.name, direction);
1169 video->video.vfl_type = VFL_TYPE_GRABBER;
1170 video->video.release = video_device_release_empty;
1171 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1173 video_set_drvdata(&video->video, video);
1175 /* ... and the buffers queue... */
1176 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
1177 if (IS_ERR(video->alloc_ctx)) {
1178 ret = PTR_ERR(video->alloc_ctx);
1182 video->queue.type = video->type;
1183 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1184 video->queue.lock = &video->lock;
1185 video->queue.drv_priv = video;
1186 video->queue.buf_struct_size = sizeof(struct vsp1_video_buffer);
1187 video->queue.ops = &vsp1_video_queue_qops;
1188 video->queue.mem_ops = &vb2_dma_contig_memops;
1189 video->queue.timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1190 ret = vb2_queue_init(&video->queue);
1192 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1196 /* ... and register the video device. */
1197 video->video.queue = &video->queue;
1198 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1200 dev_err(video->vsp1->dev, "failed to register video device\n");
1207 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1208 vsp1_video_cleanup(video);
1212 void vsp1_video_cleanup(struct vsp1_video *video)
1214 if (video_is_registered(&video->video))
1215 video_unregister_device(&video->video);
1217 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1218 media_entity_cleanup(&video->video.entity);