Commit | Line | Data |
---|---|---|
26e0ca22 LP |
1 | /* |
2 | * vsp1_video.c -- R-Car VSP1 Video Node | |
3 | * | |
139c9286 | 4 | * Copyright (C) 2013-2015 Renesas Electronics Corporation |
26e0ca22 LP |
5 | * |
6 | * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) | |
7 | * | |
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. | |
12 | */ | |
13 | ||
14 | #include <linux/list.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/mutex.h> | |
26e0ca22 LP |
17 | #include <linux/slab.h> |
18 | #include <linux/v4l2-mediabus.h> | |
19 | #include <linux/videodev2.h> | |
dba4a180 | 20 | #include <linux/wait.h> |
26e0ca22 LP |
21 | |
22 | #include <media/media-entity.h> | |
23 | #include <media/v4l2-dev.h> | |
24 | #include <media/v4l2-fh.h> | |
25 | #include <media/v4l2-ioctl.h> | |
26 | #include <media/v4l2-subdev.h> | |
c139990e | 27 | #include <media/videobuf2-v4l2.h> |
26e0ca22 LP |
28 | #include <media/videobuf2-dma-contig.h> |
29 | ||
30 | #include "vsp1.h" | |
629bb6d4 | 31 | #include "vsp1_bru.h" |
26e0ca22 | 32 | #include "vsp1_entity.h" |
dba4a180 | 33 | #include "vsp1_pipe.h" |
26e0ca22 | 34 | #include "vsp1_rwpf.h" |
bdc2df62 | 35 | #include "vsp1_uds.h" |
26e0ca22 LP |
36 | #include "vsp1_video.h" |
37 | ||
38 | #define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV | |
39 | #define VSP1_VIDEO_DEF_WIDTH 1024 | |
40 | #define VSP1_VIDEO_DEF_HEIGHT 768 | |
41 | ||
42 | #define VSP1_VIDEO_MIN_WIDTH 2U | |
43 | #define VSP1_VIDEO_MAX_WIDTH 8190U | |
44 | #define VSP1_VIDEO_MIN_HEIGHT 2U | |
45 | #define VSP1_VIDEO_MAX_HEIGHT 8190U | |
46 | ||
47 | /* ----------------------------------------------------------------------------- | |
48 | * Helper functions | |
49 | */ | |
50 | ||
26e0ca22 LP |
51 | static struct v4l2_subdev * |
52 | vsp1_video_remote_subdev(struct media_pad *local, u32 *pad) | |
53 | { | |
54 | struct media_pad *remote; | |
55 | ||
56 | remote = media_entity_remote_pad(local); | |
3efdf62c | 57 | if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) |
26e0ca22 LP |
58 | return NULL; |
59 | ||
60 | if (pad) | |
61 | *pad = remote->index; | |
62 | ||
63 | return media_entity_to_v4l2_subdev(remote->entity); | |
64 | } | |
65 | ||
66 | static int vsp1_video_verify_format(struct vsp1_video *video) | |
67 | { | |
68 | struct v4l2_subdev_format fmt; | |
69 | struct v4l2_subdev *subdev; | |
70 | int ret; | |
71 | ||
72 | subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad); | |
73 | if (subdev == NULL) | |
74 | return -EINVAL; | |
75 | ||
76 | fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; | |
77 | ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); | |
78 | if (ret < 0) | |
79 | return ret == -ENOIOCTLCMD ? -EINVAL : ret; | |
80 | ||
86960eec LP |
81 | if (video->rwpf->fmtinfo->mbus != fmt.format.code || |
82 | video->rwpf->format.height != fmt.format.height || | |
83 | video->rwpf->format.width != fmt.format.width) | |
26e0ca22 LP |
84 | return -EINVAL; |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | static int __vsp1_video_try_format(struct vsp1_video *video, | |
90 | struct v4l2_pix_format_mplane *pix, | |
91 | const struct vsp1_format_info **fmtinfo) | |
92 | { | |
56bfef3e LP |
93 | static const u32 xrgb_formats[][2] = { |
94 | { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 }, | |
95 | { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 }, | |
96 | { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 }, | |
97 | { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 }, | |
98 | }; | |
99 | ||
26e0ca22 LP |
100 | const struct vsp1_format_info *info; |
101 | unsigned int width = pix->width; | |
102 | unsigned int height = pix->height; | |
103 | unsigned int i; | |
104 | ||
56bfef3e LP |
105 | /* Backward compatibility: replace deprecated RGB formats by their XRGB |
106 | * equivalent. This selects the format older userspace applications want | |
107 | * while still exposing the new format. | |
108 | */ | |
109 | for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) { | |
110 | if (xrgb_formats[i][0] == pix->pixelformat) { | |
111 | pix->pixelformat = xrgb_formats[i][1]; | |
112 | break; | |
113 | } | |
114 | } | |
115 | ||
26e0ca22 LP |
116 | /* Retrieve format information and select the default format if the |
117 | * requested format isn't supported. | |
118 | */ | |
119 | info = vsp1_get_format_info(pix->pixelformat); | |
120 | if (info == NULL) | |
121 | info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT); | |
122 | ||
123 | pix->pixelformat = info->fourcc; | |
124 | pix->colorspace = V4L2_COLORSPACE_SRGB; | |
125 | pix->field = V4L2_FIELD_NONE; | |
126 | memset(pix->reserved, 0, sizeof(pix->reserved)); | |
127 | ||
128 | /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */ | |
129 | width = round_down(width, info->hsub); | |
130 | height = round_down(height, info->vsub); | |
131 | ||
132 | /* Clamp the width and height. */ | |
133 | pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH); | |
134 | pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT, | |
135 | VSP1_VIDEO_MAX_HEIGHT); | |
136 | ||
137 | /* Compute and clamp the stride and image size. While not documented in | |
138 | * the datasheet, strides not aligned to a multiple of 128 bytes result | |
139 | * in image corruption. | |
140 | */ | |
df5c3e7c | 141 | for (i = 0; i < min(info->planes, 2U); ++i) { |
26e0ca22 LP |
142 | unsigned int hsub = i > 0 ? info->hsub : 1; |
143 | unsigned int vsub = i > 0 ? info->vsub : 1; | |
144 | unsigned int align = 128; | |
145 | unsigned int bpl; | |
146 | ||
147 | bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline, | |
148 | pix->width / hsub * info->bpp[i] / 8, | |
149 | round_down(65535U, align)); | |
150 | ||
151 | pix->plane_fmt[i].bytesperline = round_up(bpl, align); | |
152 | pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline | |
153 | * pix->height / vsub; | |
154 | } | |
155 | ||
156 | if (info->planes == 3) { | |
157 | /* The second and third planes must have the same stride. */ | |
158 | pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline; | |
159 | pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage; | |
160 | } | |
161 | ||
162 | pix->num_planes = info->planes; | |
163 | ||
164 | if (fmtinfo) | |
165 | *fmtinfo = info; | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
26e0ca22 LP |
170 | /* ----------------------------------------------------------------------------- |
171 | * Pipeline Management | |
172 | */ | |
173 | ||
945f1276 LP |
174 | static int vsp1_video_pipeline_validate_branch(struct vsp1_pipeline *pipe, |
175 | struct vsp1_rwpf *input, | |
176 | struct vsp1_rwpf *output) | |
26e0ca22 LP |
177 | { |
178 | struct vsp1_entity *entity; | |
54b5a749 | 179 | struct media_entity_enum ent_enum; |
26e0ca22 | 180 | struct media_pad *pad; |
54b5a749 | 181 | int rval; |
bdc2df62 | 182 | bool bru_found = false; |
26e0ca22 | 183 | |
629bb6d4 LP |
184 | input->location.left = 0; |
185 | input->location.top = 0; | |
186 | ||
54b5a749 SA |
187 | rval = media_entity_enum_init( |
188 | &ent_enum, input->entity.pads[RWPF_PAD_SOURCE].graph_obj.mdev); | |
189 | if (rval) | |
190 | return rval; | |
191 | ||
26e0ca22 LP |
192 | pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]); |
193 | ||
194 | while (1) { | |
54b5a749 SA |
195 | if (pad == NULL) { |
196 | rval = -EPIPE; | |
197 | goto out; | |
198 | } | |
26e0ca22 LP |
199 | |
200 | /* We've reached a video node, that shouldn't have happened. */ | |
54b5a749 SA |
201 | if (!is_media_entity_v4l2_subdev(pad->entity)) { |
202 | rval = -EPIPE; | |
203 | goto out; | |
204 | } | |
26e0ca22 | 205 | |
54b5a749 SA |
206 | entity = to_vsp1_entity( |
207 | media_entity_to_v4l2_subdev(pad->entity)); | |
26e0ca22 | 208 | |
629bb6d4 LP |
209 | /* A BRU is present in the pipeline, store the compose rectangle |
210 | * location in the input RPF for use when configuring the RPF. | |
211 | */ | |
212 | if (entity->type == VSP1_ENTITY_BRU) { | |
213 | struct vsp1_bru *bru = to_bru(&entity->subdev); | |
6418b4d6 LP |
214 | struct v4l2_rect *rect = |
215 | &bru->inputs[pad->index].compose; | |
216 | ||
217 | bru->inputs[pad->index].rpf = input; | |
629bb6d4 LP |
218 | |
219 | input->location.left = rect->left; | |
220 | input->location.top = rect->top; | |
bdc2df62 LP |
221 | |
222 | bru_found = true; | |
629bb6d4 LP |
223 | } |
224 | ||
26e0ca22 LP |
225 | /* We've reached the WPF, we're done. */ |
226 | if (entity->type == VSP1_ENTITY_WPF) | |
227 | break; | |
228 | ||
229 | /* Ensure the branch has no loop. */ | |
54b5a749 SA |
230 | if (media_entity_enum_test_and_set(&ent_enum, |
231 | &entity->subdev.entity)) { | |
232 | rval = -EPIPE; | |
233 | goto out; | |
234 | } | |
26e0ca22 LP |
235 | |
236 | /* UDS can't be chained. */ | |
237 | if (entity->type == VSP1_ENTITY_UDS) { | |
54b5a749 SA |
238 | if (pipe->uds) { |
239 | rval = -EPIPE; | |
240 | goto out; | |
241 | } | |
bdc2df62 LP |
242 | |
243 | pipe->uds = entity; | |
244 | pipe->uds_input = bru_found ? pipe->bru | |
245 | : &input->entity; | |
26e0ca22 LP |
246 | } |
247 | ||
248 | /* Follow the source link. The link setup operations ensure | |
249 | * that the output fan-out can't be more than one, there is thus | |
250 | * no need to verify here that only a single source link is | |
251 | * activated. | |
252 | */ | |
253 | pad = &entity->pads[entity->source_pad]; | |
254 | pad = media_entity_remote_pad(pad); | |
255 | } | |
256 | ||
257 | /* The last entity must be the output WPF. */ | |
258 | if (entity != &output->entity) | |
54b5a749 | 259 | rval = -EPIPE; |
26e0ca22 | 260 | |
54b5a749 SA |
261 | out: |
262 | media_entity_enum_cleanup(&ent_enum); | |
263 | ||
264 | return rval; | |
26e0ca22 LP |
265 | } |
266 | ||
945f1276 LP |
267 | static int vsp1_video_pipeline_validate(struct vsp1_pipeline *pipe, |
268 | struct vsp1_video *video) | |
26e0ca22 LP |
269 | { |
270 | struct media_entity_graph graph; | |
271 | struct media_entity *entity = &video->video.entity; | |
d10c9894 | 272 | struct media_device *mdev = entity->graph_obj.mdev; |
26e0ca22 LP |
273 | unsigned int i; |
274 | int ret; | |
275 | ||
276 | mutex_lock(&mdev->graph_mutex); | |
277 | ||
278 | /* Walk the graph to locate the entities and video nodes. */ | |
c1a5f1bc SA |
279 | ret = media_entity_graph_walk_init(&graph, mdev); |
280 | if (ret) { | |
281 | mutex_unlock(&mdev->graph_mutex); | |
282 | return ret; | |
283 | } | |
284 | ||
26e0ca22 LP |
285 | media_entity_graph_walk_start(&graph, entity); |
286 | ||
287 | while ((entity = media_entity_graph_walk_next(&graph))) { | |
288 | struct v4l2_subdev *subdev; | |
289 | struct vsp1_rwpf *rwpf; | |
290 | struct vsp1_entity *e; | |
291 | ||
2f2db2f2 | 292 | if (is_media_entity_v4l2_io(entity)) |
26e0ca22 | 293 | continue; |
26e0ca22 LP |
294 | |
295 | subdev = media_entity_to_v4l2_subdev(entity); | |
296 | e = to_vsp1_entity(subdev); | |
297 | list_add_tail(&e->list_pipe, &pipe->entities); | |
298 | ||
299 | if (e->type == VSP1_ENTITY_RPF) { | |
300 | rwpf = to_rwpf(subdev); | |
96bfa6a5 LP |
301 | pipe->inputs[rwpf->entity.index] = rwpf; |
302 | rwpf->video->pipe_index = ++pipe->num_inputs; | |
26e0ca22 LP |
303 | } else if (e->type == VSP1_ENTITY_WPF) { |
304 | rwpf = to_rwpf(subdev); | |
f8562f21 | 305 | pipe->output = rwpf; |
faf2644d | 306 | rwpf->video->pipe_index = 0; |
26e0ca22 LP |
307 | } else if (e->type == VSP1_ENTITY_LIF) { |
308 | pipe->lif = e; | |
629bb6d4 LP |
309 | } else if (e->type == VSP1_ENTITY_BRU) { |
310 | pipe->bru = e; | |
26e0ca22 LP |
311 | } |
312 | } | |
313 | ||
314 | mutex_unlock(&mdev->graph_mutex); | |
315 | ||
c1a5f1bc SA |
316 | media_entity_graph_walk_cleanup(&graph); |
317 | ||
26e0ca22 LP |
318 | /* We need one output and at least one input. */ |
319 | if (pipe->num_inputs == 0 || !pipe->output) { | |
320 | ret = -EPIPE; | |
321 | goto error; | |
322 | } | |
323 | ||
324 | /* Follow links downstream for each input and make sure the graph | |
325 | * contains no loop and that all branches end at the output WPF. | |
326 | */ | |
5aa2eb3c | 327 | for (i = 0; i < video->vsp1->info->rpf_count; ++i) { |
96bfa6a5 LP |
328 | if (!pipe->inputs[i]) |
329 | continue; | |
330 | ||
945f1276 LP |
331 | ret = vsp1_video_pipeline_validate_branch(pipe, pipe->inputs[i], |
332 | pipe->output); | |
26e0ca22 LP |
333 | if (ret < 0) |
334 | goto error; | |
335 | } | |
336 | ||
337 | return 0; | |
338 | ||
339 | error: | |
dba4a180 | 340 | vsp1_pipeline_reset(pipe); |
26e0ca22 LP |
341 | return ret; |
342 | } | |
343 | ||
945f1276 LP |
344 | static int vsp1_video_pipeline_init(struct vsp1_pipeline *pipe, |
345 | struct vsp1_video *video) | |
26e0ca22 LP |
346 | { |
347 | int ret; | |
348 | ||
349 | mutex_lock(&pipe->lock); | |
350 | ||
351 | /* If we're the first user validate and initialize the pipeline. */ | |
352 | if (pipe->use_count == 0) { | |
945f1276 | 353 | ret = vsp1_video_pipeline_validate(pipe, video); |
26e0ca22 LP |
354 | if (ret < 0) |
355 | goto done; | |
356 | } | |
357 | ||
358 | pipe->use_count++; | |
359 | ret = 0; | |
360 | ||
361 | done: | |
362 | mutex_unlock(&pipe->lock); | |
363 | return ret; | |
364 | } | |
365 | ||
945f1276 | 366 | static void vsp1_video_pipeline_cleanup(struct vsp1_pipeline *pipe) |
26e0ca22 LP |
367 | { |
368 | mutex_lock(&pipe->lock); | |
369 | ||
370 | /* If we're the last user clean up the pipeline. */ | |
6418b4d6 | 371 | if (--pipe->use_count == 0) |
dba4a180 | 372 | vsp1_pipeline_reset(pipe); |
26e0ca22 LP |
373 | |
374 | mutex_unlock(&pipe->lock); | |
375 | } | |
376 | ||
26e0ca22 LP |
377 | /* |
378 | * vsp1_video_complete_buffer - Complete the current buffer | |
379 | * @video: the video node | |
380 | * | |
381 | * This function completes the current buffer by filling its sequence number, | |
382 | * time stamp and payload size, and hands it back to the videobuf core. | |
383 | * | |
3299ba5c LP |
384 | * When operating in DU output mode (deep pipeline to the DU through the LIF), |
385 | * the VSP1 needs to constantly supply frames to the display. In that case, if | |
386 | * no other buffer is queued, reuse the one that has just been processed instead | |
387 | * of handing it back to the videobuf core. | |
388 | * | |
26e0ca22 LP |
389 | * Return the next queued buffer or NULL if the queue is empty. |
390 | */ | |
f7ebf3ca | 391 | static struct vsp1_vb2_buffer * |
26e0ca22 LP |
392 | vsp1_video_complete_buffer(struct vsp1_video *video) |
393 | { | |
3299ba5c | 394 | struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity); |
f7ebf3ca LP |
395 | struct vsp1_vb2_buffer *next = NULL; |
396 | struct vsp1_vb2_buffer *done; | |
26e0ca22 LP |
397 | unsigned long flags; |
398 | unsigned int i; | |
399 | ||
400 | spin_lock_irqsave(&video->irqlock, flags); | |
401 | ||
402 | if (list_empty(&video->irqqueue)) { | |
403 | spin_unlock_irqrestore(&video->irqlock, flags); | |
404 | return NULL; | |
405 | } | |
406 | ||
407 | done = list_first_entry(&video->irqqueue, | |
f7ebf3ca | 408 | struct vsp1_vb2_buffer, queue); |
3299ba5c LP |
409 | |
410 | /* In DU output mode reuse the buffer if the list is singular. */ | |
411 | if (pipe->lif && list_is_singular(&video->irqqueue)) { | |
412 | spin_unlock_irqrestore(&video->irqlock, flags); | |
413 | return done; | |
414 | } | |
415 | ||
26e0ca22 LP |
416 | list_del(&done->queue); |
417 | ||
418 | if (!list_empty(&video->irqqueue)) | |
419 | next = list_first_entry(&video->irqqueue, | |
f7ebf3ca | 420 | struct vsp1_vb2_buffer, queue); |
26e0ca22 LP |
421 | |
422 | spin_unlock_irqrestore(&video->irqlock, flags); | |
423 | ||
2d700715 | 424 | done->buf.sequence = video->sequence++; |
d6dd645e | 425 | done->buf.vb2_buf.timestamp = ktime_get_ns(); |
2d700715 | 426 | for (i = 0; i < done->buf.vb2_buf.num_planes; ++i) |
b58faa95 LP |
427 | vb2_set_plane_payload(&done->buf.vb2_buf, i, |
428 | done->mem.length[i]); | |
2d700715 | 429 | vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE); |
26e0ca22 LP |
430 | |
431 | return next; | |
432 | } | |
433 | ||
434 | static void vsp1_video_frame_end(struct vsp1_pipeline *pipe, | |
3f725b7e | 435 | struct vsp1_rwpf *rwpf) |
26e0ca22 | 436 | { |
3f725b7e | 437 | struct vsp1_video *video = rwpf->video; |
f7ebf3ca | 438 | struct vsp1_vb2_buffer *buf; |
26e0ca22 LP |
439 | unsigned long flags; |
440 | ||
441 | buf = vsp1_video_complete_buffer(video); | |
442 | if (buf == NULL) | |
443 | return; | |
444 | ||
445 | spin_lock_irqsave(&pipe->irqlock, flags); | |
446 | ||
b58faa95 | 447 | video->rwpf->ops->set_memory(video->rwpf, &buf->mem); |
26e0ca22 LP |
448 | pipe->buffers_ready |= 1 << video->pipe_index; |
449 | ||
450 | spin_unlock_irqrestore(&pipe->irqlock, flags); | |
451 | } | |
452 | ||
3f725b7e LP |
453 | static void vsp1_video_pipeline_frame_end(struct vsp1_pipeline *pipe) |
454 | { | |
96bfa6a5 | 455 | struct vsp1_device *vsp1 = pipe->output->entity.vsp1; |
3f725b7e LP |
456 | unsigned int i; |
457 | ||
458 | /* Complete buffers on all video nodes. */ | |
5aa2eb3c | 459 | for (i = 0; i < vsp1->info->rpf_count; ++i) { |
96bfa6a5 LP |
460 | if (!pipe->inputs[i]) |
461 | continue; | |
462 | ||
3f725b7e | 463 | vsp1_video_frame_end(pipe, pipe->inputs[i]); |
96bfa6a5 | 464 | } |
3f725b7e LP |
465 | |
466 | if (!pipe->lif) | |
467 | vsp1_video_frame_end(pipe, pipe->output); | |
468 | } | |
469 | ||
26e0ca22 LP |
470 | /* ----------------------------------------------------------------------------- |
471 | * videobuf2 Queue Operations | |
472 | */ | |
473 | ||
474 | static int | |
df9ecb0c | 475 | vsp1_video_queue_setup(struct vb2_queue *vq, |
26e0ca22 LP |
476 | unsigned int *nbuffers, unsigned int *nplanes, |
477 | unsigned int sizes[], void *alloc_ctxs[]) | |
478 | { | |
479 | struct vsp1_video *video = vb2_get_drv_priv(vq); | |
86960eec | 480 | const struct v4l2_pix_format_mplane *format = &video->rwpf->format; |
26e0ca22 LP |
481 | unsigned int i; |
482 | ||
df9ecb0c HV |
483 | if (*nplanes) { |
484 | if (*nplanes != format->num_planes) | |
26e0ca22 LP |
485 | return -EINVAL; |
486 | ||
df9ecb0c HV |
487 | for (i = 0; i < *nplanes; i++) { |
488 | if (sizes[i] < format->plane_fmt[i].sizeimage) | |
489 | return -EINVAL; | |
490 | alloc_ctxs[i] = video->alloc_ctx; | |
491 | } | |
492 | return 0; | |
26e0ca22 LP |
493 | } |
494 | ||
495 | *nplanes = format->num_planes; | |
496 | ||
497 | for (i = 0; i < format->num_planes; ++i) { | |
498 | sizes[i] = format->plane_fmt[i].sizeimage; | |
499 | alloc_ctxs[i] = video->alloc_ctx; | |
500 | } | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
505 | static int vsp1_video_buffer_prepare(struct vb2_buffer *vb) | |
506 | { | |
2d700715 | 507 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
26e0ca22 | 508 | struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue); |
f7ebf3ca | 509 | struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf); |
86960eec | 510 | const struct v4l2_pix_format_mplane *format = &video->rwpf->format; |
26e0ca22 LP |
511 | unsigned int i; |
512 | ||
513 | if (vb->num_planes < format->num_planes) | |
514 | return -EINVAL; | |
515 | ||
b58faa95 LP |
516 | buf->mem.num_planes = vb->num_planes; |
517 | ||
26e0ca22 | 518 | for (i = 0; i < vb->num_planes; ++i) { |
b58faa95 LP |
519 | buf->mem.addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); |
520 | buf->mem.length[i] = vb2_plane_size(vb, i); | |
26e0ca22 | 521 | |
b58faa95 | 522 | if (buf->mem.length[i] < format->plane_fmt[i].sizeimage) |
26e0ca22 LP |
523 | return -EINVAL; |
524 | } | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | static void vsp1_video_buffer_queue(struct vb2_buffer *vb) | |
530 | { | |
2d700715 | 531 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
26e0ca22 LP |
532 | struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue); |
533 | struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity); | |
f7ebf3ca | 534 | struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf); |
26e0ca22 LP |
535 | unsigned long flags; |
536 | bool empty; | |
537 | ||
538 | spin_lock_irqsave(&video->irqlock, flags); | |
539 | empty = list_empty(&video->irqqueue); | |
540 | list_add_tail(&buf->queue, &video->irqqueue); | |
541 | spin_unlock_irqrestore(&video->irqlock, flags); | |
542 | ||
543 | if (!empty) | |
544 | return; | |
545 | ||
546 | spin_lock_irqsave(&pipe->irqlock, flags); | |
547 | ||
b58faa95 | 548 | video->rwpf->ops->set_memory(video->rwpf, &buf->mem); |
26e0ca22 LP |
549 | pipe->buffers_ready |= 1 << video->pipe_index; |
550 | ||
551 | if (vb2_is_streaming(&video->queue) && | |
552 | vsp1_pipeline_ready(pipe)) | |
553 | vsp1_pipeline_run(pipe); | |
554 | ||
555 | spin_unlock_irqrestore(&pipe->irqlock, flags); | |
556 | } | |
557 | ||
26e0ca22 LP |
558 | static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count) |
559 | { | |
560 | struct vsp1_video *video = vb2_get_drv_priv(vq); | |
561 | struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity); | |
562 | struct vsp1_entity *entity; | |
563 | unsigned long flags; | |
564 | int ret; | |
565 | ||
566 | mutex_lock(&pipe->lock); | |
2f2db2f2 | 567 | if (pipe->stream_count == pipe->num_inputs) { |
bdc2df62 LP |
568 | if (pipe->uds) { |
569 | struct vsp1_uds *uds = to_uds(&pipe->uds->subdev); | |
570 | ||
571 | /* If a BRU is present in the pipeline before the UDS, | |
572 | * the alpha component doesn't need to be scaled as the | |
573 | * BRU output alpha value is fixed to 255. Otherwise we | |
574 | * need to scale the alpha component only when available | |
575 | * at the input RPF. | |
576 | */ | |
577 | if (pipe->uds_input->type == VSP1_ENTITY_BRU) { | |
578 | uds->scale_alpha = false; | |
579 | } else { | |
580 | struct vsp1_rwpf *rpf = | |
581 | to_rwpf(&pipe->uds_input->subdev); | |
582 | ||
86960eec | 583 | uds->scale_alpha = rpf->fmtinfo->alpha; |
bdc2df62 LP |
584 | } |
585 | } | |
586 | ||
26e0ca22 LP |
587 | list_for_each_entry(entity, &pipe->entities, list_pipe) { |
588 | vsp1_entity_route_setup(entity); | |
589 | ||
590 | ret = v4l2_subdev_call(&entity->subdev, video, | |
591 | s_stream, 1); | |
592 | if (ret < 0) { | |
593 | mutex_unlock(&pipe->lock); | |
594 | return ret; | |
595 | } | |
596 | } | |
597 | } | |
598 | ||
599 | pipe->stream_count++; | |
600 | mutex_unlock(&pipe->lock); | |
601 | ||
602 | spin_lock_irqsave(&pipe->irqlock, flags); | |
603 | if (vsp1_pipeline_ready(pipe)) | |
604 | vsp1_pipeline_run(pipe); | |
605 | spin_unlock_irqrestore(&pipe->irqlock, flags); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
e37559b2 | 610 | static void vsp1_video_stop_streaming(struct vb2_queue *vq) |
26e0ca22 LP |
611 | { |
612 | struct vsp1_video *video = vb2_get_drv_priv(vq); | |
613 | struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity); | |
f7ebf3ca | 614 | struct vsp1_vb2_buffer *buffer; |
26e0ca22 LP |
615 | unsigned long flags; |
616 | int ret; | |
617 | ||
618 | mutex_lock(&pipe->lock); | |
619 | if (--pipe->stream_count == 0) { | |
620 | /* Stop the pipeline. */ | |
621 | ret = vsp1_pipeline_stop(pipe); | |
622 | if (ret == -ETIMEDOUT) | |
623 | dev_err(video->vsp1->dev, "pipeline stop timeout\n"); | |
624 | } | |
625 | mutex_unlock(&pipe->lock); | |
626 | ||
945f1276 | 627 | vsp1_video_pipeline_cleanup(pipe); |
26e0ca22 LP |
628 | media_entity_pipeline_stop(&video->video.entity); |
629 | ||
630 | /* Remove all buffers from the IRQ queue. */ | |
631 | spin_lock_irqsave(&video->irqlock, flags); | |
9df04e9d | 632 | list_for_each_entry(buffer, &video->irqqueue, queue) |
2d700715 | 633 | vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR); |
26e0ca22 LP |
634 | INIT_LIST_HEAD(&video->irqqueue); |
635 | spin_unlock_irqrestore(&video->irqlock, flags); | |
26e0ca22 LP |
636 | } |
637 | ||
638 | static struct vb2_ops vsp1_video_queue_qops = { | |
639 | .queue_setup = vsp1_video_queue_setup, | |
640 | .buf_prepare = vsp1_video_buffer_prepare, | |
641 | .buf_queue = vsp1_video_buffer_queue, | |
642 | .wait_prepare = vb2_ops_wait_prepare, | |
643 | .wait_finish = vb2_ops_wait_finish, | |
644 | .start_streaming = vsp1_video_start_streaming, | |
645 | .stop_streaming = vsp1_video_stop_streaming, | |
646 | }; | |
647 | ||
648 | /* ----------------------------------------------------------------------------- | |
649 | * V4L2 ioctls | |
650 | */ | |
651 | ||
652 | static int | |
653 | vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap) | |
654 | { | |
655 | struct v4l2_fh *vfh = file->private_data; | |
656 | struct vsp1_video *video = to_vsp1_video(vfh->vdev); | |
657 | ||
658 | cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING | |
659 | | V4L2_CAP_VIDEO_CAPTURE_MPLANE | |
660 | | V4L2_CAP_VIDEO_OUTPUT_MPLANE; | |
661 | ||
662 | if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) | |
663 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | |
664 | | V4L2_CAP_STREAMING; | |
665 | else | |
666 | cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE | |
667 | | V4L2_CAP_STREAMING; | |
668 | ||
669 | strlcpy(cap->driver, "vsp1", sizeof(cap->driver)); | |
670 | strlcpy(cap->card, video->video.name, sizeof(cap->card)); | |
671 | snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", | |
672 | dev_name(video->vsp1->dev)); | |
673 | ||
674 | return 0; | |
675 | } | |
676 | ||
677 | static int | |
678 | vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format) | |
679 | { | |
680 | struct v4l2_fh *vfh = file->private_data; | |
681 | struct vsp1_video *video = to_vsp1_video(vfh->vdev); | |
682 | ||
683 | if (format->type != video->queue.type) | |
684 | return -EINVAL; | |
685 | ||
686 | mutex_lock(&video->lock); | |
86960eec | 687 | format->fmt.pix_mp = video->rwpf->format; |
26e0ca22 LP |
688 | mutex_unlock(&video->lock); |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | static int | |
694 | vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format) | |
695 | { | |
696 | struct v4l2_fh *vfh = file->private_data; | |
697 | struct vsp1_video *video = to_vsp1_video(vfh->vdev); | |
698 | ||
699 | if (format->type != video->queue.type) | |
700 | return -EINVAL; | |
701 | ||
702 | return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL); | |
703 | } | |
704 | ||
705 | static int | |
706 | vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format) | |
707 | { | |
708 | struct v4l2_fh *vfh = file->private_data; | |
709 | struct vsp1_video *video = to_vsp1_video(vfh->vdev); | |
710 | const struct vsp1_format_info *info; | |
711 | int ret; | |
712 | ||
713 | if (format->type != video->queue.type) | |
714 | return -EINVAL; | |
715 | ||
716 | ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info); | |
717 | if (ret < 0) | |
718 | return ret; | |
719 | ||
720 | mutex_lock(&video->lock); | |
721 | ||
722 | if (vb2_is_busy(&video->queue)) { | |
723 | ret = -EBUSY; | |
724 | goto done; | |
725 | } | |
726 | ||
86960eec LP |
727 | video->rwpf->format = format->fmt.pix_mp; |
728 | video->rwpf->fmtinfo = info; | |
26e0ca22 LP |
729 | |
730 | done: | |
731 | mutex_unlock(&video->lock); | |
732 | return ret; | |
733 | } | |
734 | ||
735 | static int | |
736 | vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) | |
737 | { | |
738 | struct v4l2_fh *vfh = file->private_data; | |
739 | struct vsp1_video *video = to_vsp1_video(vfh->vdev); | |
740 | struct vsp1_pipeline *pipe; | |
741 | int ret; | |
742 | ||
26e0ca22 LP |
743 | if (video->queue.owner && video->queue.owner != file->private_data) |
744 | return -EBUSY; | |
745 | ||
746 | video->sequence = 0; | |
747 | ||
748 | /* Start streaming on the pipeline. No link touching an entity in the | |
749 | * pipeline can be activated or deactivated once streaming is started. | |
750 | * | |
751 | * Use the VSP1 pipeline object embedded in the first video object that | |
752 | * starts streaming. | |
753 | */ | |
754 | pipe = video->video.entity.pipe | |
755 | ? to_vsp1_pipeline(&video->video.entity) : &video->pipe; | |
756 | ||
757 | ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe); | |
758 | if (ret < 0) | |
759 | return ret; | |
760 | ||
761 | /* Verify that the configured format matches the output of the connected | |
762 | * subdev. | |
763 | */ | |
764 | ret = vsp1_video_verify_format(video); | |
765 | if (ret < 0) | |
766 | goto err_stop; | |
767 | ||
945f1276 | 768 | ret = vsp1_video_pipeline_init(pipe, video); |
26e0ca22 LP |
769 | if (ret < 0) |
770 | goto err_stop; | |
771 | ||
772 | /* Start the queue. */ | |
773 | ret = vb2_streamon(&video->queue, type); | |
774 | if (ret < 0) | |
775 | goto err_cleanup; | |
776 | ||
777 | return 0; | |
778 | ||
779 | err_cleanup: | |
945f1276 | 780 | vsp1_video_pipeline_cleanup(pipe); |
26e0ca22 LP |
781 | err_stop: |
782 | media_entity_pipeline_stop(&video->video.entity); | |
783 | return ret; | |
784 | } | |
785 | ||
786 | static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = { | |
787 | .vidioc_querycap = vsp1_video_querycap, | |
788 | .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format, | |
789 | .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format, | |
790 | .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format, | |
791 | .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format, | |
792 | .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format, | |
793 | .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format, | |
794 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
795 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
796 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
797 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
798 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
799 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, | |
800 | .vidioc_streamon = vsp1_video_streamon, | |
801 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
802 | }; | |
803 | ||
804 | /* ----------------------------------------------------------------------------- | |
805 | * V4L2 File Operations | |
806 | */ | |
807 | ||
808 | static int vsp1_video_open(struct file *file) | |
809 | { | |
810 | struct vsp1_video *video = video_drvdata(file); | |
811 | struct v4l2_fh *vfh; | |
812 | int ret = 0; | |
813 | ||
814 | vfh = kzalloc(sizeof(*vfh), GFP_KERNEL); | |
815 | if (vfh == NULL) | |
816 | return -ENOMEM; | |
817 | ||
818 | v4l2_fh_init(vfh, &video->video); | |
819 | v4l2_fh_add(vfh); | |
820 | ||
821 | file->private_data = vfh; | |
822 | ||
4c16d6a0 LP |
823 | ret = vsp1_device_get(video->vsp1); |
824 | if (ret < 0) { | |
26e0ca22 LP |
825 | v4l2_fh_del(vfh); |
826 | kfree(vfh); | |
827 | } | |
828 | ||
829 | return ret; | |
830 | } | |
831 | ||
832 | static int vsp1_video_release(struct file *file) | |
833 | { | |
834 | struct vsp1_video *video = video_drvdata(file); | |
835 | struct v4l2_fh *vfh = file->private_data; | |
836 | ||
837 | mutex_lock(&video->lock); | |
838 | if (video->queue.owner == vfh) { | |
839 | vb2_queue_release(&video->queue); | |
840 | video->queue.owner = NULL; | |
841 | } | |
842 | mutex_unlock(&video->lock); | |
843 | ||
844 | vsp1_device_put(video->vsp1); | |
845 | ||
846 | v4l2_fh_release(file); | |
847 | ||
848 | file->private_data = NULL; | |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | static struct v4l2_file_operations vsp1_video_fops = { | |
854 | .owner = THIS_MODULE, | |
855 | .unlocked_ioctl = video_ioctl2, | |
856 | .open = vsp1_video_open, | |
857 | .release = vsp1_video_release, | |
858 | .poll = vb2_fop_poll, | |
859 | .mmap = vb2_fop_mmap, | |
860 | }; | |
861 | ||
862 | /* ----------------------------------------------------------------------------- | |
863 | * Initialization and Cleanup | |
864 | */ | |
865 | ||
9d40637a LP |
866 | struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1, |
867 | struct vsp1_rwpf *rwpf) | |
26e0ca22 | 868 | { |
9d40637a | 869 | struct vsp1_video *video; |
26e0ca22 LP |
870 | const char *direction; |
871 | int ret; | |
872 | ||
9d40637a LP |
873 | video = devm_kzalloc(vsp1->dev, sizeof(*video), GFP_KERNEL); |
874 | if (!video) | |
875 | return ERR_PTR(-ENOMEM); | |
26e0ca22 | 876 | |
faf2644d | 877 | rwpf->video = video; |
9d40637a LP |
878 | |
879 | video->vsp1 = vsp1; | |
880 | video->rwpf = rwpf; | |
881 | ||
882 | if (rwpf->entity.type == VSP1_ENTITY_RPF) { | |
26e0ca22 | 883 | direction = "input"; |
9d40637a | 884 | video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; |
26e0ca22 LP |
885 | video->pad.flags = MEDIA_PAD_FL_SOURCE; |
886 | video->video.vfl_dir = VFL_DIR_TX; | |
9d40637a LP |
887 | } else { |
888 | direction = "output"; | |
889 | video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; | |
890 | video->pad.flags = MEDIA_PAD_FL_SINK; | |
891 | video->video.vfl_dir = VFL_DIR_RX; | |
26e0ca22 LP |
892 | } |
893 | ||
26e0ca22 LP |
894 | mutex_init(&video->lock); |
895 | spin_lock_init(&video->irqlock); | |
896 | INIT_LIST_HEAD(&video->irqqueue); | |
897 | ||
f294c2f7 | 898 | vsp1_pipeline_init(&video->pipe); |
3f725b7e | 899 | video->pipe.frame_end = vsp1_video_pipeline_frame_end; |
26e0ca22 LP |
900 | |
901 | /* Initialize the media entity... */ | |
ab22e77c | 902 | ret = media_entity_pads_init(&video->video.entity, 1, &video->pad); |
26e0ca22 | 903 | if (ret < 0) |
9d40637a | 904 | return ERR_PTR(ret); |
26e0ca22 LP |
905 | |
906 | /* ... and the format ... */ | |
86960eec LP |
907 | rwpf->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT); |
908 | rwpf->format.pixelformat = rwpf->fmtinfo->fourcc; | |
909 | rwpf->format.colorspace = V4L2_COLORSPACE_SRGB; | |
910 | rwpf->format.field = V4L2_FIELD_NONE; | |
911 | rwpf->format.width = VSP1_VIDEO_DEF_WIDTH; | |
912 | rwpf->format.height = VSP1_VIDEO_DEF_HEIGHT; | |
913 | rwpf->format.num_planes = 1; | |
914 | rwpf->format.plane_fmt[0].bytesperline = | |
915 | rwpf->format.width * rwpf->fmtinfo->bpp[0] / 8; | |
916 | rwpf->format.plane_fmt[0].sizeimage = | |
917 | rwpf->format.plane_fmt[0].bytesperline * rwpf->format.height; | |
26e0ca22 LP |
918 | |
919 | /* ... and the video node... */ | |
920 | video->video.v4l2_dev = &video->vsp1->v4l2_dev; | |
921 | video->video.fops = &vsp1_video_fops; | |
922 | snprintf(video->video.name, sizeof(video->video.name), "%s %s", | |
8b4a0563 | 923 | rwpf->entity.subdev.name, direction); |
26e0ca22 LP |
924 | video->video.vfl_type = VFL_TYPE_GRABBER; |
925 | video->video.release = video_device_release_empty; | |
926 | video->video.ioctl_ops = &vsp1_video_ioctl_ops; | |
927 | ||
928 | video_set_drvdata(&video->video, video); | |
929 | ||
930 | /* ... and the buffers queue... */ | |
931 | video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev); | |
b317828b WY |
932 | if (IS_ERR(video->alloc_ctx)) { |
933 | ret = PTR_ERR(video->alloc_ctx); | |
26e0ca22 | 934 | goto error; |
b317828b | 935 | } |
26e0ca22 LP |
936 | |
937 | video->queue.type = video->type; | |
938 | video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; | |
939 | video->queue.lock = &video->lock; | |
940 | video->queue.drv_priv = video; | |
f7ebf3ca | 941 | video->queue.buf_struct_size = sizeof(struct vsp1_vb2_buffer); |
26e0ca22 LP |
942 | video->queue.ops = &vsp1_video_queue_qops; |
943 | video->queue.mem_ops = &vb2_dma_contig_memops; | |
ade48681 | 944 | video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
26e0ca22 LP |
945 | ret = vb2_queue_init(&video->queue); |
946 | if (ret < 0) { | |
947 | dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n"); | |
948 | goto error; | |
949 | } | |
950 | ||
951 | /* ... and register the video device. */ | |
952 | video->video.queue = &video->queue; | |
953 | ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1); | |
954 | if (ret < 0) { | |
955 | dev_err(video->vsp1->dev, "failed to register video device\n"); | |
956 | goto error; | |
957 | } | |
958 | ||
9d40637a | 959 | return video; |
26e0ca22 LP |
960 | |
961 | error: | |
962 | vb2_dma_contig_cleanup_ctx(video->alloc_ctx); | |
963 | vsp1_video_cleanup(video); | |
9d40637a | 964 | return ERR_PTR(ret); |
26e0ca22 LP |
965 | } |
966 | ||
967 | void vsp1_video_cleanup(struct vsp1_video *video) | |
968 | { | |
969 | if (video_is_registered(&video->video)) | |
970 | video_unregister_device(&video->video); | |
971 | ||
972 | vb2_dma_contig_cleanup_ctx(video->alloc_ctx); | |
973 | media_entity_cleanup(&video->video.entity); | |
974 | } |