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[media] media: create a macro to get entity ID
[deliverable/linux.git] / drivers / media / platform / vsp1 / vsp1_video.c
1 /*
2 * vsp1_video.c -- R-Car VSP1 Video Node
3 *
4 * Copyright (C) 2013-2015 Renesas Electronics Corporation
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>
17 #include <linux/sched.h>
18 #include <linux/slab.h>
19 #include <linux/v4l2-mediabus.h>
20 #include <linux/videodev2.h>
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>
27 #include <media/videobuf2-v4l2.h>
28 #include <media/videobuf2-dma-contig.h>
29
30 #include "vsp1.h"
31 #include "vsp1_bru.h"
32 #include "vsp1_entity.h"
33 #include "vsp1_rwpf.h"
34 #include "vsp1_uds.h"
35 #include "vsp1_video.h"
36
37 #define VSP1_VIDEO_DEF_FORMAT V4L2_PIX_FMT_YUYV
38 #define VSP1_VIDEO_DEF_WIDTH 1024
39 #define VSP1_VIDEO_DEF_HEIGHT 768
40
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
45
46 /* -----------------------------------------------------------------------------
47 * Helper functions
48 */
49
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 |
57 VI6_RPF_DSWAP_P_WDS,
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 |
61 VI6_RPF_DSWAP_P_WDS,
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 |
65 VI6_RPF_DSWAP_P_WDS,
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 |
69 VI6_RPF_DSWAP_P_WDS,
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 |
73 VI6_RPF_DSWAP_P_WDS,
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 },
133 };
134
135 /*
136 * vsp1_get_format_info - Retrieve format information for a 4CC
137 * @fourcc: the format 4CC
138 *
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.
141 */
142 static const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc)
143 {
144 unsigned int i;
145
146 for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {
147 const struct vsp1_format_info *info = &vsp1_video_formats[i];
148
149 if (info->fourcc == fourcc)
150 return info;
151 }
152
153 return NULL;
154 }
155
156
157 static struct v4l2_subdev *
158 vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
159 {
160 struct media_pad *remote;
161
162 remote = media_entity_remote_pad(local);
163 if (remote == NULL ||
164 media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
165 return NULL;
166
167 if (pad)
168 *pad = remote->index;
169
170 return media_entity_to_v4l2_subdev(remote->entity);
171 }
172
173 static int vsp1_video_verify_format(struct vsp1_video *video)
174 {
175 struct v4l2_subdev_format fmt;
176 struct v4l2_subdev *subdev;
177 int ret;
178
179 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
180 if (subdev == NULL)
181 return -EINVAL;
182
183 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
184 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
185 if (ret < 0)
186 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
187
188 if (video->fmtinfo->mbus != fmt.format.code ||
189 video->format.height != fmt.format.height ||
190 video->format.width != fmt.format.width)
191 return -EINVAL;
192
193 return 0;
194 }
195
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)
199 {
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 },
205 };
206
207 const struct vsp1_format_info *info;
208 unsigned int width = pix->width;
209 unsigned int height = pix->height;
210 unsigned int i;
211
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.
215 */
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];
219 break;
220 }
221 }
222
223 /* Retrieve format information and select the default format if the
224 * requested format isn't supported.
225 */
226 info = vsp1_get_format_info(pix->pixelformat);
227 if (info == NULL)
228 info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
229
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));
234
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);
238
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);
243
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.
247 */
248 for (i = 0; i < min(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;
252 unsigned int bpl;
253
254 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
255 pix->width / hsub * info->bpp[i] / 8,
256 round_down(65535U, align));
257
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;
261 }
262
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;
267 }
268
269 pix->num_planes = info->planes;
270
271 if (fmtinfo)
272 *fmtinfo = info;
273
274 return 0;
275 }
276
277 /* -----------------------------------------------------------------------------
278 * Pipeline Management
279 */
280
281 static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
282 struct vsp1_rwpf *input,
283 struct vsp1_rwpf *output)
284 {
285 struct vsp1_entity *entity;
286 unsigned int entities = 0;
287 struct media_pad *pad;
288 bool bru_found = false;
289
290 input->location.left = 0;
291 input->location.top = 0;
292
293 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
294
295 while (1) {
296 if (pad == NULL)
297 return -EPIPE;
298
299 /* We've reached a video node, that shouldn't have happened. */
300 if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
301 return -EPIPE;
302
303 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
304
305 /* A BRU is present in the pipeline, store the compose rectangle
306 * location in the input RPF for use when configuring the RPF.
307 */
308 if (entity->type == VSP1_ENTITY_BRU) {
309 struct vsp1_bru *bru = to_bru(&entity->subdev);
310 struct v4l2_rect *rect =
311 &bru->inputs[pad->index].compose;
312
313 bru->inputs[pad->index].rpf = input;
314
315 input->location.left = rect->left;
316 input->location.top = rect->top;
317
318 bru_found = true;
319 }
320
321 /* We've reached the WPF, we're done. */
322 if (entity->type == VSP1_ENTITY_WPF)
323 break;
324
325 /* Ensure the branch has no loop. */
326 if (entities & (1 << media_entity_id(&entity->subdev.entity)))
327 return -EPIPE;
328
329 entities |= 1 << media_entity_id(&entity->subdev.entity);
330
331 /* UDS can't be chained. */
332 if (entity->type == VSP1_ENTITY_UDS) {
333 if (pipe->uds)
334 return -EPIPE;
335
336 pipe->uds = entity;
337 pipe->uds_input = bru_found ? pipe->bru
338 : &input->entity;
339 }
340
341 /* Follow the source link. The link setup operations ensure
342 * that the output fan-out can't be more than one, there is thus
343 * no need to verify here that only a single source link is
344 * activated.
345 */
346 pad = &entity->pads[entity->source_pad];
347 pad = media_entity_remote_pad(pad);
348 }
349
350 /* The last entity must be the output WPF. */
351 if (entity != &output->entity)
352 return -EPIPE;
353
354 return 0;
355 }
356
357 static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
358 {
359 if (pipe->bru) {
360 struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
361 unsigned int i;
362
363 for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
364 bru->inputs[i].rpf = NULL;
365 }
366
367 INIT_LIST_HEAD(&pipe->entities);
368 pipe->state = VSP1_PIPELINE_STOPPED;
369 pipe->buffers_ready = 0;
370 pipe->num_video = 0;
371 pipe->num_inputs = 0;
372 pipe->output = NULL;
373 pipe->bru = NULL;
374 pipe->lif = NULL;
375 pipe->uds = NULL;
376 }
377
378 static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
379 struct vsp1_video *video)
380 {
381 struct media_entity_graph graph;
382 struct media_entity *entity = &video->video.entity;
383 struct media_device *mdev = entity->parent;
384 unsigned int i;
385 int ret;
386
387 mutex_lock(&mdev->graph_mutex);
388
389 /* Walk the graph to locate the entities and video nodes. */
390 media_entity_graph_walk_start(&graph, entity);
391
392 while ((entity = media_entity_graph_walk_next(&graph))) {
393 struct v4l2_subdev *subdev;
394 struct vsp1_rwpf *rwpf;
395 struct vsp1_entity *e;
396
397 if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
398 pipe->num_video++;
399 continue;
400 }
401
402 subdev = media_entity_to_v4l2_subdev(entity);
403 e = to_vsp1_entity(subdev);
404 list_add_tail(&e->list_pipe, &pipe->entities);
405
406 if (e->type == VSP1_ENTITY_RPF) {
407 rwpf = to_rwpf(subdev);
408 pipe->inputs[pipe->num_inputs++] = rwpf;
409 rwpf->video.pipe_index = pipe->num_inputs;
410 } else if (e->type == VSP1_ENTITY_WPF) {
411 rwpf = to_rwpf(subdev);
412 pipe->output = to_rwpf(subdev);
413 rwpf->video.pipe_index = 0;
414 } else if (e->type == VSP1_ENTITY_LIF) {
415 pipe->lif = e;
416 } else if (e->type == VSP1_ENTITY_BRU) {
417 pipe->bru = e;
418 }
419 }
420
421 mutex_unlock(&mdev->graph_mutex);
422
423 /* We need one output and at least one input. */
424 if (pipe->num_inputs == 0 || !pipe->output) {
425 ret = -EPIPE;
426 goto error;
427 }
428
429 /* Follow links downstream for each input and make sure the graph
430 * contains no loop and that all branches end at the output WPF.
431 */
432 for (i = 0; i < pipe->num_inputs; ++i) {
433 ret = vsp1_pipeline_validate_branch(pipe, pipe->inputs[i],
434 pipe->output);
435 if (ret < 0)
436 goto error;
437 }
438
439 return 0;
440
441 error:
442 __vsp1_pipeline_cleanup(pipe);
443 return ret;
444 }
445
446 static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
447 struct vsp1_video *video)
448 {
449 int ret;
450
451 mutex_lock(&pipe->lock);
452
453 /* If we're the first user validate and initialize the pipeline. */
454 if (pipe->use_count == 0) {
455 ret = vsp1_pipeline_validate(pipe, video);
456 if (ret < 0)
457 goto done;
458 }
459
460 pipe->use_count++;
461 ret = 0;
462
463 done:
464 mutex_unlock(&pipe->lock);
465 return ret;
466 }
467
468 static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
469 {
470 mutex_lock(&pipe->lock);
471
472 /* If we're the last user clean up the pipeline. */
473 if (--pipe->use_count == 0)
474 __vsp1_pipeline_cleanup(pipe);
475
476 mutex_unlock(&pipe->lock);
477 }
478
479 static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
480 {
481 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
482
483 vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
484 pipe->state = VSP1_PIPELINE_RUNNING;
485 pipe->buffers_ready = 0;
486 }
487
488 static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)
489 {
490 unsigned long flags;
491 bool stopped;
492
493 spin_lock_irqsave(&pipe->irqlock, flags);
494 stopped = pipe->state == VSP1_PIPELINE_STOPPED,
495 spin_unlock_irqrestore(&pipe->irqlock, flags);
496
497 return stopped;
498 }
499
500 static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
501 {
502 struct vsp1_entity *entity;
503 unsigned long flags;
504 int ret;
505
506 spin_lock_irqsave(&pipe->irqlock, flags);
507 if (pipe->state == VSP1_PIPELINE_RUNNING)
508 pipe->state = VSP1_PIPELINE_STOPPING;
509 spin_unlock_irqrestore(&pipe->irqlock, flags);
510
511 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
512 msecs_to_jiffies(500));
513 ret = ret == 0 ? -ETIMEDOUT : 0;
514
515 list_for_each_entry(entity, &pipe->entities, list_pipe) {
516 if (entity->route && entity->route->reg)
517 vsp1_write(entity->vsp1, entity->route->reg,
518 VI6_DPR_NODE_UNUSED);
519
520 v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
521 }
522
523 return ret;
524 }
525
526 static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
527 {
528 unsigned int mask;
529
530 mask = ((1 << pipe->num_inputs) - 1) << 1;
531 if (!pipe->lif)
532 mask |= 1 << 0;
533
534 return pipe->buffers_ready == mask;
535 }
536
537 /*
538 * vsp1_video_complete_buffer - Complete the current buffer
539 * @video: the video node
540 *
541 * This function completes the current buffer by filling its sequence number,
542 * time stamp and payload size, and hands it back to the videobuf core.
543 *
544 * When operating in DU output mode (deep pipeline to the DU through the LIF),
545 * the VSP1 needs to constantly supply frames to the display. In that case, if
546 * no other buffer is queued, reuse the one that has just been processed instead
547 * of handing it back to the videobuf core.
548 *
549 * Return the next queued buffer or NULL if the queue is empty.
550 */
551 static struct vsp1_video_buffer *
552 vsp1_video_complete_buffer(struct vsp1_video *video)
553 {
554 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
555 struct vsp1_video_buffer *next = NULL;
556 struct vsp1_video_buffer *done;
557 unsigned long flags;
558 unsigned int i;
559
560 spin_lock_irqsave(&video->irqlock, flags);
561
562 if (list_empty(&video->irqqueue)) {
563 spin_unlock_irqrestore(&video->irqlock, flags);
564 return NULL;
565 }
566
567 done = list_first_entry(&video->irqqueue,
568 struct vsp1_video_buffer, queue);
569
570 /* In DU output mode reuse the buffer if the list is singular. */
571 if (pipe->lif && list_is_singular(&video->irqqueue)) {
572 spin_unlock_irqrestore(&video->irqlock, flags);
573 return done;
574 }
575
576 list_del(&done->queue);
577
578 if (!list_empty(&video->irqqueue))
579 next = list_first_entry(&video->irqqueue,
580 struct vsp1_video_buffer, queue);
581
582 spin_unlock_irqrestore(&video->irqlock, flags);
583
584 done->buf.sequence = video->sequence++;
585 done->buf.vb2_buf.timestamp = ktime_get_ns();
586 for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
587 vb2_set_plane_payload(&done->buf.vb2_buf, i, done->length[i]);
588 vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
589
590 return next;
591 }
592
593 static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
594 struct vsp1_video *video)
595 {
596 struct vsp1_video_buffer *buf;
597 unsigned long flags;
598
599 buf = vsp1_video_complete_buffer(video);
600 if (buf == NULL)
601 return;
602
603 spin_lock_irqsave(&pipe->irqlock, flags);
604
605 video->ops->queue(video, buf);
606 pipe->buffers_ready |= 1 << video->pipe_index;
607
608 spin_unlock_irqrestore(&pipe->irqlock, flags);
609 }
610
611 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
612 {
613 enum vsp1_pipeline_state state;
614 unsigned long flags;
615 unsigned int i;
616
617 if (pipe == NULL)
618 return;
619
620 /* Complete buffers on all video nodes. */
621 for (i = 0; i < pipe->num_inputs; ++i)
622 vsp1_video_frame_end(pipe, &pipe->inputs[i]->video);
623
624 if (!pipe->lif)
625 vsp1_video_frame_end(pipe, &pipe->output->video);
626
627 spin_lock_irqsave(&pipe->irqlock, flags);
628
629 state = pipe->state;
630 pipe->state = VSP1_PIPELINE_STOPPED;
631
632 /* If a stop has been requested, mark the pipeline as stopped and
633 * return.
634 */
635 if (state == VSP1_PIPELINE_STOPPING) {
636 wake_up(&pipe->wq);
637 goto done;
638 }
639
640 /* Restart the pipeline if ready. */
641 if (vsp1_pipeline_ready(pipe))
642 vsp1_pipeline_run(pipe);
643
644 done:
645 spin_unlock_irqrestore(&pipe->irqlock, flags);
646 }
647
648 /*
649 * Propagate the alpha value through the pipeline.
650 *
651 * As the UDS has restricted scaling capabilities when the alpha component needs
652 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
653 * value. The UDS then outputs a fixed alpha value which needs to be programmed
654 * from the input RPF alpha.
655 */
656 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
657 struct vsp1_entity *input,
658 unsigned int alpha)
659 {
660 struct vsp1_entity *entity;
661 struct media_pad *pad;
662
663 pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
664
665 while (pad) {
666 if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
667 break;
668
669 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
670
671 /* The BRU background color has a fixed alpha value set to 255,
672 * the output alpha value is thus always equal to 255.
673 */
674 if (entity->type == VSP1_ENTITY_BRU)
675 alpha = 255;
676
677 if (entity->type == VSP1_ENTITY_UDS) {
678 struct vsp1_uds *uds = to_uds(&entity->subdev);
679
680 vsp1_uds_set_alpha(uds, alpha);
681 break;
682 }
683
684 pad = &entity->pads[entity->source_pad];
685 pad = media_entity_remote_pad(pad);
686 }
687 }
688
689 void vsp1_pipelines_suspend(struct vsp1_device *vsp1)
690 {
691 unsigned long flags;
692 unsigned int i;
693 int ret;
694
695 /* To avoid increasing the system suspend time needlessly, loop over the
696 * pipelines twice, first to set them all to the stopping state, and then
697 * to wait for the stop to complete.
698 */
699 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
700 struct vsp1_rwpf *wpf = vsp1->wpf[i];
701 struct vsp1_pipeline *pipe;
702
703 if (wpf == NULL)
704 continue;
705
706 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
707 if (pipe == NULL)
708 continue;
709
710 spin_lock_irqsave(&pipe->irqlock, flags);
711 if (pipe->state == VSP1_PIPELINE_RUNNING)
712 pipe->state = VSP1_PIPELINE_STOPPING;
713 spin_unlock_irqrestore(&pipe->irqlock, flags);
714 }
715
716 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
717 struct vsp1_rwpf *wpf = vsp1->wpf[i];
718 struct vsp1_pipeline *pipe;
719
720 if (wpf == NULL)
721 continue;
722
723 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
724 if (pipe == NULL)
725 continue;
726
727 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
728 msecs_to_jiffies(500));
729 if (ret == 0)
730 dev_warn(vsp1->dev, "pipeline %u stop timeout\n",
731 wpf->entity.index);
732 }
733 }
734
735 void vsp1_pipelines_resume(struct vsp1_device *vsp1)
736 {
737 unsigned int i;
738
739 /* Resume pipeline all running pipelines. */
740 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
741 struct vsp1_rwpf *wpf = vsp1->wpf[i];
742 struct vsp1_pipeline *pipe;
743
744 if (wpf == NULL)
745 continue;
746
747 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
748 if (pipe == NULL)
749 continue;
750
751 if (vsp1_pipeline_ready(pipe))
752 vsp1_pipeline_run(pipe);
753 }
754 }
755
756 /* -----------------------------------------------------------------------------
757 * videobuf2 Queue Operations
758 */
759
760 static int
761 vsp1_video_queue_setup(struct vb2_queue *vq,
762 unsigned int *nbuffers, unsigned int *nplanes,
763 unsigned int sizes[], void *alloc_ctxs[])
764 {
765 struct vsp1_video *video = vb2_get_drv_priv(vq);
766 const struct v4l2_pix_format_mplane *format = &video->format;
767 unsigned int i;
768
769 if (*nplanes) {
770 if (*nplanes != format->num_planes)
771 return -EINVAL;
772
773 for (i = 0; i < *nplanes; i++) {
774 if (sizes[i] < format->plane_fmt[i].sizeimage)
775 return -EINVAL;
776 alloc_ctxs[i] = video->alloc_ctx;
777 }
778 return 0;
779 }
780
781 *nplanes = format->num_planes;
782
783 for (i = 0; i < format->num_planes; ++i) {
784 sizes[i] = format->plane_fmt[i].sizeimage;
785 alloc_ctxs[i] = video->alloc_ctx;
786 }
787
788 return 0;
789 }
790
791 static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
792 {
793 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
794 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
795 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vbuf);
796 const struct v4l2_pix_format_mplane *format = &video->format;
797 unsigned int i;
798
799 if (vb->num_planes < format->num_planes)
800 return -EINVAL;
801
802 for (i = 0; i < vb->num_planes; ++i) {
803 buf->addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
804 buf->length[i] = vb2_plane_size(vb, i);
805
806 if (buf->length[i] < format->plane_fmt[i].sizeimage)
807 return -EINVAL;
808 }
809
810 return 0;
811 }
812
813 static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
814 {
815 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
816 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
817 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
818 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vbuf);
819 unsigned long flags;
820 bool empty;
821
822 spin_lock_irqsave(&video->irqlock, flags);
823 empty = list_empty(&video->irqqueue);
824 list_add_tail(&buf->queue, &video->irqqueue);
825 spin_unlock_irqrestore(&video->irqlock, flags);
826
827 if (!empty)
828 return;
829
830 spin_lock_irqsave(&pipe->irqlock, flags);
831
832 video->ops->queue(video, buf);
833 pipe->buffers_ready |= 1 << video->pipe_index;
834
835 if (vb2_is_streaming(&video->queue) &&
836 vsp1_pipeline_ready(pipe))
837 vsp1_pipeline_run(pipe);
838
839 spin_unlock_irqrestore(&pipe->irqlock, flags);
840 }
841
842 static void vsp1_entity_route_setup(struct vsp1_entity *source)
843 {
844 struct vsp1_entity *sink;
845
846 if (source->route->reg == 0)
847 return;
848
849 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
850 vsp1_write(source->vsp1, source->route->reg,
851 sink->route->inputs[source->sink_pad]);
852 }
853
854 static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
855 {
856 struct vsp1_video *video = vb2_get_drv_priv(vq);
857 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
858 struct vsp1_entity *entity;
859 unsigned long flags;
860 int ret;
861
862 mutex_lock(&pipe->lock);
863 if (pipe->stream_count == pipe->num_video - 1) {
864 if (pipe->uds) {
865 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
866
867 /* If a BRU is present in the pipeline before the UDS,
868 * the alpha component doesn't need to be scaled as the
869 * BRU output alpha value is fixed to 255. Otherwise we
870 * need to scale the alpha component only when available
871 * at the input RPF.
872 */
873 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
874 uds->scale_alpha = false;
875 } else {
876 struct vsp1_rwpf *rpf =
877 to_rwpf(&pipe->uds_input->subdev);
878
879 uds->scale_alpha = rpf->video.fmtinfo->alpha;
880 }
881 }
882
883 list_for_each_entry(entity, &pipe->entities, list_pipe) {
884 vsp1_entity_route_setup(entity);
885
886 ret = v4l2_subdev_call(&entity->subdev, video,
887 s_stream, 1);
888 if (ret < 0) {
889 mutex_unlock(&pipe->lock);
890 return ret;
891 }
892 }
893 }
894
895 pipe->stream_count++;
896 mutex_unlock(&pipe->lock);
897
898 spin_lock_irqsave(&pipe->irqlock, flags);
899 if (vsp1_pipeline_ready(pipe))
900 vsp1_pipeline_run(pipe);
901 spin_unlock_irqrestore(&pipe->irqlock, flags);
902
903 return 0;
904 }
905
906 static void vsp1_video_stop_streaming(struct vb2_queue *vq)
907 {
908 struct vsp1_video *video = vb2_get_drv_priv(vq);
909 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
910 struct vsp1_video_buffer *buffer;
911 unsigned long flags;
912 int ret;
913
914 mutex_lock(&pipe->lock);
915 if (--pipe->stream_count == 0) {
916 /* Stop the pipeline. */
917 ret = vsp1_pipeline_stop(pipe);
918 if (ret == -ETIMEDOUT)
919 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
920 }
921 mutex_unlock(&pipe->lock);
922
923 vsp1_pipeline_cleanup(pipe);
924 media_entity_pipeline_stop(&video->video.entity);
925
926 /* Remove all buffers from the IRQ queue. */
927 spin_lock_irqsave(&video->irqlock, flags);
928 list_for_each_entry(buffer, &video->irqqueue, queue)
929 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
930 INIT_LIST_HEAD(&video->irqqueue);
931 spin_unlock_irqrestore(&video->irqlock, flags);
932 }
933
934 static struct vb2_ops vsp1_video_queue_qops = {
935 .queue_setup = vsp1_video_queue_setup,
936 .buf_prepare = vsp1_video_buffer_prepare,
937 .buf_queue = vsp1_video_buffer_queue,
938 .wait_prepare = vb2_ops_wait_prepare,
939 .wait_finish = vb2_ops_wait_finish,
940 .start_streaming = vsp1_video_start_streaming,
941 .stop_streaming = vsp1_video_stop_streaming,
942 };
943
944 /* -----------------------------------------------------------------------------
945 * V4L2 ioctls
946 */
947
948 static int
949 vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
950 {
951 struct v4l2_fh *vfh = file->private_data;
952 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
953
954 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
955 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
956 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
957
958 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
959 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
960 | V4L2_CAP_STREAMING;
961 else
962 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
963 | V4L2_CAP_STREAMING;
964
965 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
966 strlcpy(cap->card, video->video.name, sizeof(cap->card));
967 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
968 dev_name(video->vsp1->dev));
969
970 return 0;
971 }
972
973 static int
974 vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
975 {
976 struct v4l2_fh *vfh = file->private_data;
977 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
978
979 if (format->type != video->queue.type)
980 return -EINVAL;
981
982 mutex_lock(&video->lock);
983 format->fmt.pix_mp = video->format;
984 mutex_unlock(&video->lock);
985
986 return 0;
987 }
988
989 static int
990 vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
991 {
992 struct v4l2_fh *vfh = file->private_data;
993 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
994
995 if (format->type != video->queue.type)
996 return -EINVAL;
997
998 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
999 }
1000
1001 static int
1002 vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1003 {
1004 struct v4l2_fh *vfh = file->private_data;
1005 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1006 const struct vsp1_format_info *info;
1007 int ret;
1008
1009 if (format->type != video->queue.type)
1010 return -EINVAL;
1011
1012 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1013 if (ret < 0)
1014 return ret;
1015
1016 mutex_lock(&video->lock);
1017
1018 if (vb2_is_busy(&video->queue)) {
1019 ret = -EBUSY;
1020 goto done;
1021 }
1022
1023 video->format = format->fmt.pix_mp;
1024 video->fmtinfo = info;
1025
1026 done:
1027 mutex_unlock(&video->lock);
1028 return ret;
1029 }
1030
1031 static int
1032 vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1033 {
1034 struct v4l2_fh *vfh = file->private_data;
1035 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1036 struct vsp1_pipeline *pipe;
1037 int ret;
1038
1039 if (video->queue.owner && video->queue.owner != file->private_data)
1040 return -EBUSY;
1041
1042 video->sequence = 0;
1043
1044 /* Start streaming on the pipeline. No link touching an entity in the
1045 * pipeline can be activated or deactivated once streaming is started.
1046 *
1047 * Use the VSP1 pipeline object embedded in the first video object that
1048 * starts streaming.
1049 */
1050 pipe = video->video.entity.pipe
1051 ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
1052
1053 ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
1054 if (ret < 0)
1055 return ret;
1056
1057 /* Verify that the configured format matches the output of the connected
1058 * subdev.
1059 */
1060 ret = vsp1_video_verify_format(video);
1061 if (ret < 0)
1062 goto err_stop;
1063
1064 ret = vsp1_pipeline_init(pipe, video);
1065 if (ret < 0)
1066 goto err_stop;
1067
1068 /* Start the queue. */
1069 ret = vb2_streamon(&video->queue, type);
1070 if (ret < 0)
1071 goto err_cleanup;
1072
1073 return 0;
1074
1075 err_cleanup:
1076 vsp1_pipeline_cleanup(pipe);
1077 err_stop:
1078 media_entity_pipeline_stop(&video->video.entity);
1079 return ret;
1080 }
1081
1082 static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1083 .vidioc_querycap = vsp1_video_querycap,
1084 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1085 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1086 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1087 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1088 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1089 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1090 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1091 .vidioc_querybuf = vb2_ioctl_querybuf,
1092 .vidioc_qbuf = vb2_ioctl_qbuf,
1093 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1094 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1095 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1096 .vidioc_streamon = vsp1_video_streamon,
1097 .vidioc_streamoff = vb2_ioctl_streamoff,
1098 };
1099
1100 /* -----------------------------------------------------------------------------
1101 * V4L2 File Operations
1102 */
1103
1104 static int vsp1_video_open(struct file *file)
1105 {
1106 struct vsp1_video *video = video_drvdata(file);
1107 struct v4l2_fh *vfh;
1108 int ret = 0;
1109
1110 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1111 if (vfh == NULL)
1112 return -ENOMEM;
1113
1114 v4l2_fh_init(vfh, &video->video);
1115 v4l2_fh_add(vfh);
1116
1117 file->private_data = vfh;
1118
1119 ret = vsp1_device_get(video->vsp1);
1120 if (ret < 0) {
1121 v4l2_fh_del(vfh);
1122 kfree(vfh);
1123 }
1124
1125 return ret;
1126 }
1127
1128 static int vsp1_video_release(struct file *file)
1129 {
1130 struct vsp1_video *video = video_drvdata(file);
1131 struct v4l2_fh *vfh = file->private_data;
1132
1133 mutex_lock(&video->lock);
1134 if (video->queue.owner == vfh) {
1135 vb2_queue_release(&video->queue);
1136 video->queue.owner = NULL;
1137 }
1138 mutex_unlock(&video->lock);
1139
1140 vsp1_device_put(video->vsp1);
1141
1142 v4l2_fh_release(file);
1143
1144 file->private_data = NULL;
1145
1146 return 0;
1147 }
1148
1149 static struct v4l2_file_operations vsp1_video_fops = {
1150 .owner = THIS_MODULE,
1151 .unlocked_ioctl = video_ioctl2,
1152 .open = vsp1_video_open,
1153 .release = vsp1_video_release,
1154 .poll = vb2_fop_poll,
1155 .mmap = vb2_fop_mmap,
1156 };
1157
1158 /* -----------------------------------------------------------------------------
1159 * Initialization and Cleanup
1160 */
1161
1162 int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
1163 {
1164 const char *direction;
1165 int ret;
1166
1167 switch (video->type) {
1168 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1169 direction = "output";
1170 video->pad.flags = MEDIA_PAD_FL_SINK;
1171 break;
1172
1173 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1174 direction = "input";
1175 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1176 video->video.vfl_dir = VFL_DIR_TX;
1177 break;
1178
1179 default:
1180 return -EINVAL;
1181 }
1182
1183 video->rwpf = rwpf;
1184
1185 mutex_init(&video->lock);
1186 spin_lock_init(&video->irqlock);
1187 INIT_LIST_HEAD(&video->irqqueue);
1188
1189 mutex_init(&video->pipe.lock);
1190 spin_lock_init(&video->pipe.irqlock);
1191 INIT_LIST_HEAD(&video->pipe.entities);
1192 init_waitqueue_head(&video->pipe.wq);
1193 video->pipe.state = VSP1_PIPELINE_STOPPED;
1194
1195 /* Initialize the media entity... */
1196 ret = media_entity_init(&video->video.entity, 1, &video->pad);
1197 if (ret < 0)
1198 return ret;
1199
1200 /* ... and the format ... */
1201 video->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
1202 video->format.pixelformat = video->fmtinfo->fourcc;
1203 video->format.colorspace = V4L2_COLORSPACE_SRGB;
1204 video->format.field = V4L2_FIELD_NONE;
1205 video->format.width = VSP1_VIDEO_DEF_WIDTH;
1206 video->format.height = VSP1_VIDEO_DEF_HEIGHT;
1207 video->format.num_planes = 1;
1208 video->format.plane_fmt[0].bytesperline =
1209 video->format.width * video->fmtinfo->bpp[0] / 8;
1210 video->format.plane_fmt[0].sizeimage =
1211 video->format.plane_fmt[0].bytesperline * video->format.height;
1212
1213 /* ... and the video node... */
1214 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1215 video->video.fops = &vsp1_video_fops;
1216 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1217 rwpf->subdev.name, direction);
1218 video->video.vfl_type = VFL_TYPE_GRABBER;
1219 video->video.release = video_device_release_empty;
1220 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1221
1222 video_set_drvdata(&video->video, video);
1223
1224 /* ... and the buffers queue... */
1225 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
1226 if (IS_ERR(video->alloc_ctx)) {
1227 ret = PTR_ERR(video->alloc_ctx);
1228 goto error;
1229 }
1230
1231 video->queue.type = video->type;
1232 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1233 video->queue.lock = &video->lock;
1234 video->queue.drv_priv = video;
1235 video->queue.buf_struct_size = sizeof(struct vsp1_video_buffer);
1236 video->queue.ops = &vsp1_video_queue_qops;
1237 video->queue.mem_ops = &vb2_dma_contig_memops;
1238 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1239 ret = vb2_queue_init(&video->queue);
1240 if (ret < 0) {
1241 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1242 goto error;
1243 }
1244
1245 /* ... and register the video device. */
1246 video->video.queue = &video->queue;
1247 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1248 if (ret < 0) {
1249 dev_err(video->vsp1->dev, "failed to register video device\n");
1250 goto error;
1251 }
1252
1253 return 0;
1254
1255 error:
1256 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1257 vsp1_video_cleanup(video);
1258 return ret;
1259 }
1260
1261 void vsp1_video_cleanup(struct vsp1_video *video)
1262 {
1263 if (video_is_registered(&video->video))
1264 video_unregister_device(&video->video);
1265
1266 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1267 media_entity_cleanup(&video->video.entity);
1268 }
Linux kernel - Deliverables
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