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[media] v4l: vsp1: Move vsp1_video pointer from vsp1_entity to vsp1_rwpf
[linux-2.6/btrfs-unstable.git] / drivers / media / platform / vsp1 / vsp1_video.c
blobe9a6f9f90c90a40c77c62727d91231fd5ca42c2e
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 { V4L2_PIX_FMT_YVU420M, MEDIA_BUS_FMT_AYUV8_1X32,
134 VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
135 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
136 3, { 8, 8, 8 }, false, true, 2, 2, false },
137 { V4L2_PIX_FMT_YUV422M, MEDIA_BUS_FMT_AYUV8_1X32,
138 VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
139 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
140 3, { 8, 8, 8 }, false, false, 2, 1, false },
141 { V4L2_PIX_FMT_YVU422M, MEDIA_BUS_FMT_AYUV8_1X32,
142 VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
143 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
144 3, { 8, 8, 8 }, false, true, 2, 1, false },
145 { V4L2_PIX_FMT_YUV444M, MEDIA_BUS_FMT_AYUV8_1X32,
146 VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
147 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
148 3, { 8, 8, 8 }, false, false, 1, 1, false },
149 { V4L2_PIX_FMT_YVU444M, MEDIA_BUS_FMT_AYUV8_1X32,
150 VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
151 VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
152 3, { 8, 8, 8 }, false, true, 1, 1, false },
153 };
154
155 /*
156 * vsp1_get_format_info - Retrieve format information for a 4CC
157 * @fourcc: the format 4CC
158 *
159 * Return a pointer to the format information structure corresponding to the
160 * given V4L2 format 4CC, or NULL if no corresponding format can be found.
161 */
162 static const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc)
163 {
164 unsigned int i;
165
166 for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {
167 const struct vsp1_format_info *info = &vsp1_video_formats[i];
168
169 if (info->fourcc == fourcc)
170 return info;
171 }
172
173 return NULL;
174 }
175
176
177 static struct v4l2_subdev *
178 vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
179 {
180 struct media_pad *remote;
181
182 remote = media_entity_remote_pad(local);
183 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
184 return NULL;
185
186 if (pad)
187 *pad = remote->index;
188
189 return media_entity_to_v4l2_subdev(remote->entity);
190 }
191
192 static int vsp1_video_verify_format(struct vsp1_video *video)
193 {
194 struct v4l2_subdev_format fmt;
195 struct v4l2_subdev *subdev;
196 int ret;
197
198 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad);
199 if (subdev == NULL)
200 return -EINVAL;
201
202 fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
203 ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
204 if (ret < 0)
205 return ret == -ENOIOCTLCMD ? -EINVAL : ret;
206
207 if (video->rwpf->fmtinfo->mbus != fmt.format.code ||
208 video->rwpf->format.height != fmt.format.height ||
209 video->rwpf->format.width != fmt.format.width)
210 return -EINVAL;
211
212 return 0;
213 }
214
215 static int __vsp1_video_try_format(struct vsp1_video *video,
216 struct v4l2_pix_format_mplane *pix,
217 const struct vsp1_format_info **fmtinfo)
218 {
219 static const u32 xrgb_formats[][2] = {
220 { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 },
221 { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 },
222 { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 },
223 { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 },
224 };
225
226 const struct vsp1_format_info *info;
227 unsigned int width = pix->width;
228 unsigned int height = pix->height;
229 unsigned int i;
230
231 /* Backward compatibility: replace deprecated RGB formats by their XRGB
232 * equivalent. This selects the format older userspace applications want
233 * while still exposing the new format.
234 */
235 for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) {
236 if (xrgb_formats[i][0] == pix->pixelformat) {
237 pix->pixelformat = xrgb_formats[i][1];
238 break;
239 }
240 }
241
242 /* Retrieve format information and select the default format if the
243 * requested format isn't supported.
244 */
245 info = vsp1_get_format_info(pix->pixelformat);
246 if (info == NULL)
247 info = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
248
249 pix->pixelformat = info->fourcc;
250 pix->colorspace = V4L2_COLORSPACE_SRGB;
251 pix->field = V4L2_FIELD_NONE;
252 memset(pix->reserved, 0, sizeof(pix->reserved));
253
254 /* Align the width and height for YUV 4:2:2 and 4:2:0 formats. */
255 width = round_down(width, info->hsub);
256 height = round_down(height, info->vsub);
257
258 /* Clamp the width and height. */
259 pix->width = clamp(width, VSP1_VIDEO_MIN_WIDTH, VSP1_VIDEO_MAX_WIDTH);
260 pix->height = clamp(height, VSP1_VIDEO_MIN_HEIGHT,
261 VSP1_VIDEO_MAX_HEIGHT);
262
263 /* Compute and clamp the stride and image size. While not documented in
264 * the datasheet, strides not aligned to a multiple of 128 bytes result
265 * in image corruption.
266 */
267 for (i = 0; i < min(info->planes, 2U); ++i) {
268 unsigned int hsub = i > 0 ? info->hsub : 1;
269 unsigned int vsub = i > 0 ? info->vsub : 1;
270 unsigned int align = 128;
271 unsigned int bpl;
272
273 bpl = clamp_t(unsigned int, pix->plane_fmt[i].bytesperline,
274 pix->width / hsub * info->bpp[i] / 8,
275 round_down(65535U, align));
276
277 pix->plane_fmt[i].bytesperline = round_up(bpl, align);
278 pix->plane_fmt[i].sizeimage = pix->plane_fmt[i].bytesperline
279 * pix->height / vsub;
280 }
281
282 if (info->planes == 3) {
283 /* The second and third planes must have the same stride. */
284 pix->plane_fmt[2].bytesperline = pix->plane_fmt[1].bytesperline;
285 pix->plane_fmt[2].sizeimage = pix->plane_fmt[1].sizeimage;
286 }
287
288 pix->num_planes = info->planes;
289
290 if (fmtinfo)
291 *fmtinfo = info;
292
293 return 0;
294 }
295
296 /* -----------------------------------------------------------------------------
297 * Pipeline Management
298 */
299
300 static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
301 struct vsp1_rwpf *input,
302 struct vsp1_rwpf *output)
303 {
304 struct vsp1_entity *entity;
305 struct media_entity_enum ent_enum;
306 struct media_pad *pad;
307 int rval;
308 bool bru_found = false;
309
310 input->location.left = 0;
311 input->location.top = 0;
312
313 rval = media_entity_enum_init(
314 &ent_enum, input->entity.pads[RWPF_PAD_SOURCE].graph_obj.mdev);
315 if (rval)
316 return rval;
317
318 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
319
320 while (1) {
321 if (pad == NULL) {
322 rval = -EPIPE;
323 goto out;
324 }
325
326 /* We've reached a video node, that shouldn't have happened. */
327 if (!is_media_entity_v4l2_subdev(pad->entity)) {
328 rval = -EPIPE;
329 goto out;
330 }
331
332 entity = to_vsp1_entity(
333 media_entity_to_v4l2_subdev(pad->entity));
334
335 /* A BRU is present in the pipeline, store the compose rectangle
336 * location in the input RPF for use when configuring the RPF.
337 */
338 if (entity->type == VSP1_ENTITY_BRU) {
339 struct vsp1_bru *bru = to_bru(&entity->subdev);
340 struct v4l2_rect *rect =
341 &bru->inputs[pad->index].compose;
342
343 bru->inputs[pad->index].rpf = input;
344
345 input->location.left = rect->left;
346 input->location.top = rect->top;
347
348 bru_found = true;
349 }
350
351 /* We've reached the WPF, we're done. */
352 if (entity->type == VSP1_ENTITY_WPF)
353 break;
354
355 /* Ensure the branch has no loop. */
356 if (media_entity_enum_test_and_set(&ent_enum,
357 &entity->subdev.entity)) {
358 rval = -EPIPE;
359 goto out;
360 }
361
362 /* UDS can't be chained. */
363 if (entity->type == VSP1_ENTITY_UDS) {
364 if (pipe->uds) {
365 rval = -EPIPE;
366 goto out;
367 }
368
369 pipe->uds = entity;
370 pipe->uds_input = bru_found ? pipe->bru
371 : &input->entity;
372 }
373
374 /* Follow the source link. The link setup operations ensure
375 * that the output fan-out can't be more than one, there is thus
376 * no need to verify here that only a single source link is
377 * activated.
378 */
379 pad = &entity->pads[entity->source_pad];
380 pad = media_entity_remote_pad(pad);
381 }
382
383 /* The last entity must be the output WPF. */
384 if (entity != &output->entity)
385 rval = -EPIPE;
386
387 out:
388 media_entity_enum_cleanup(&ent_enum);
389
390 return rval;
391 }
392
393 static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
394 {
395 if (pipe->bru) {
396 struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
397 unsigned int i;
398
399 for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
400 bru->inputs[i].rpf = NULL;
401 }
402
403 INIT_LIST_HEAD(&pipe->entities);
404 pipe->state = VSP1_PIPELINE_STOPPED;
405 pipe->buffers_ready = 0;
406 pipe->num_video = 0;
407 pipe->num_inputs = 0;
408 pipe->output = NULL;
409 pipe->bru = NULL;
410 pipe->lif = NULL;
411 pipe->uds = NULL;
412 }
413
414 static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
415 struct vsp1_video *video)
416 {
417 struct media_entity_graph graph;
418 struct media_entity *entity = &video->video.entity;
419 struct media_device *mdev = entity->graph_obj.mdev;
420 unsigned int i;
421 int ret;
422
423 mutex_lock(&mdev->graph_mutex);
424
425 /* Walk the graph to locate the entities and video nodes. */
426 ret = media_entity_graph_walk_init(&graph, mdev);
427 if (ret) {
428 mutex_unlock(&mdev->graph_mutex);
429 return ret;
430 }
431
432 media_entity_graph_walk_start(&graph, entity);
433
434 while ((entity = media_entity_graph_walk_next(&graph))) {
435 struct v4l2_subdev *subdev;
436 struct vsp1_rwpf *rwpf;
437 struct vsp1_entity *e;
438
439 if (is_media_entity_v4l2_io(entity)) {
440 pipe->num_video++;
441 continue;
442 }
443
444 subdev = media_entity_to_v4l2_subdev(entity);
445 e = to_vsp1_entity(subdev);
446 list_add_tail(&e->list_pipe, &pipe->entities);
447
448 if (e->type == VSP1_ENTITY_RPF) {
449 rwpf = to_rwpf(subdev);
450 pipe->inputs[pipe->num_inputs++] = rwpf;
451 rwpf->video->pipe_index = pipe->num_inputs;
452 } else if (e->type == VSP1_ENTITY_WPF) {
453 rwpf = to_rwpf(subdev);
454 pipe->output = to_rwpf(subdev);
455 rwpf->video->pipe_index = 0;
456 } else if (e->type == VSP1_ENTITY_LIF) {
457 pipe->lif = e;
458 } else if (e->type == VSP1_ENTITY_BRU) {
459 pipe->bru = e;
460 }
461 }
462
463 mutex_unlock(&mdev->graph_mutex);
464
465 media_entity_graph_walk_cleanup(&graph);
466
467 /* We need one output and at least one input. */
468 if (pipe->num_inputs == 0 || !pipe->output) {
469 ret = -EPIPE;
470 goto error;
471 }
472
473 /* Follow links downstream for each input and make sure the graph
474 * contains no loop and that all branches end at the output WPF.
475 */
476 for (i = 0; i < pipe->num_inputs; ++i) {
477 ret = vsp1_pipeline_validate_branch(pipe, pipe->inputs[i],
478 pipe->output);
479 if (ret < 0)
480 goto error;
481 }
482
483 return 0;
484
485 error:
486 __vsp1_pipeline_cleanup(pipe);
487 return ret;
488 }
489
490 static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
491 struct vsp1_video *video)
492 {
493 int ret;
494
495 mutex_lock(&pipe->lock);
496
497 /* If we're the first user validate and initialize the pipeline. */
498 if (pipe->use_count == 0) {
499 ret = vsp1_pipeline_validate(pipe, video);
500 if (ret < 0)
501 goto done;
502 }
503
504 pipe->use_count++;
505 ret = 0;
506
507 done:
508 mutex_unlock(&pipe->lock);
509 return ret;
510 }
511
512 static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
513 {
514 mutex_lock(&pipe->lock);
515
516 /* If we're the last user clean up the pipeline. */
517 if (--pipe->use_count == 0)
518 __vsp1_pipeline_cleanup(pipe);
519
520 mutex_unlock(&pipe->lock);
521 }
522
523 static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
524 {
525 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
526
527 vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
528 pipe->state = VSP1_PIPELINE_RUNNING;
529 pipe->buffers_ready = 0;
530 }
531
532 static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)
533 {
534 unsigned long flags;
535 bool stopped;
536
537 spin_lock_irqsave(&pipe->irqlock, flags);
538 stopped = pipe->state == VSP1_PIPELINE_STOPPED;
539 spin_unlock_irqrestore(&pipe->irqlock, flags);
540
541 return stopped;
542 }
543
544 static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
545 {
546 struct vsp1_entity *entity;
547 unsigned long flags;
548 int ret;
549
550 spin_lock_irqsave(&pipe->irqlock, flags);
551 if (pipe->state == VSP1_PIPELINE_RUNNING)
552 pipe->state = VSP1_PIPELINE_STOPPING;
553 spin_unlock_irqrestore(&pipe->irqlock, flags);
554
555 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
556 msecs_to_jiffies(500));
557 ret = ret == 0 ? -ETIMEDOUT : 0;
558
559 list_for_each_entry(entity, &pipe->entities, list_pipe) {
560 if (entity->route && entity->route->reg)
561 vsp1_write(entity->vsp1, entity->route->reg,
562 VI6_DPR_NODE_UNUSED);
563
564 v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
565 }
566
567 return ret;
568 }
569
570 static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
571 {
572 unsigned int mask;
573
574 mask = ((1 << pipe->num_inputs) - 1) << 1;
575 if (!pipe->lif)
576 mask |= 1 << 0;
577
578 return pipe->buffers_ready == mask;
579 }
580
581 /*
582 * vsp1_video_complete_buffer - Complete the current buffer
583 * @video: the video node
584 *
585 * This function completes the current buffer by filling its sequence number,
586 * time stamp and payload size, and hands it back to the videobuf core.
587 *
588 * When operating in DU output mode (deep pipeline to the DU through the LIF),
589 * the VSP1 needs to constantly supply frames to the display. In that case, if
590 * no other buffer is queued, reuse the one that has just been processed instead
591 * of handing it back to the videobuf core.
592 *
593 * Return the next queued buffer or NULL if the queue is empty.
594 */
595 static struct vsp1_vb2_buffer *
596 vsp1_video_complete_buffer(struct vsp1_video *video)
597 {
598 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
599 struct vsp1_vb2_buffer *next = NULL;
600 struct vsp1_vb2_buffer *done;
601 unsigned long flags;
602 unsigned int i;
603
604 spin_lock_irqsave(&video->irqlock, flags);
605
606 if (list_empty(&video->irqqueue)) {
607 spin_unlock_irqrestore(&video->irqlock, flags);
608 return NULL;
609 }
610
611 done = list_first_entry(&video->irqqueue,
612 struct vsp1_vb2_buffer, queue);
613
614 /* In DU output mode reuse the buffer if the list is singular. */
615 if (pipe->lif && list_is_singular(&video->irqqueue)) {
616 spin_unlock_irqrestore(&video->irqlock, flags);
617 return done;
618 }
619
620 list_del(&done->queue);
621
622 if (!list_empty(&video->irqqueue))
623 next = list_first_entry(&video->irqqueue,
624 struct vsp1_vb2_buffer, queue);
625
626 spin_unlock_irqrestore(&video->irqlock, flags);
627
628 done->buf.sequence = video->sequence++;
629 done->buf.vb2_buf.timestamp = ktime_get_ns();
630 for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
631 vb2_set_plane_payload(&done->buf.vb2_buf, i,
632 done->mem.length[i]);
633 vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
634
635 return next;
636 }
637
638 static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
639 struct vsp1_video *video)
640 {
641 struct vsp1_vb2_buffer *buf;
642 unsigned long flags;
643
644 buf = vsp1_video_complete_buffer(video);
645 if (buf == NULL)
646 return;
647
648 spin_lock_irqsave(&pipe->irqlock, flags);
649
650 video->rwpf->ops->set_memory(video->rwpf, &buf->mem);
651 pipe->buffers_ready |= 1 << video->pipe_index;
652
653 spin_unlock_irqrestore(&pipe->irqlock, flags);
654 }
655
656 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
657 {
658 enum vsp1_pipeline_state state;
659 unsigned long flags;
660 unsigned int i;
661
662 if (pipe == NULL)
663 return;
664
665 /* Complete buffers on all video nodes. */
666 for (i = 0; i < pipe->num_inputs; ++i)
667 vsp1_video_frame_end(pipe, pipe->inputs[i]->video);
668
669 if (!pipe->lif)
670 vsp1_video_frame_end(pipe, pipe->output->video);
671
672 spin_lock_irqsave(&pipe->irqlock, flags);
673
674 state = pipe->state;
675 pipe->state = VSP1_PIPELINE_STOPPED;
676
677 /* If a stop has been requested, mark the pipeline as stopped and
678 * return.
679 */
680 if (state == VSP1_PIPELINE_STOPPING) {
681 wake_up(&pipe->wq);
682 goto done;
683 }
684
685 /* Restart the pipeline if ready. */
686 if (vsp1_pipeline_ready(pipe))
687 vsp1_pipeline_run(pipe);
688
689 done:
690 spin_unlock_irqrestore(&pipe->irqlock, flags);
691 }
692
693 /*
694 * Propagate the alpha value through the pipeline.
695 *
696 * As the UDS has restricted scaling capabilities when the alpha component needs
697 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
698 * value. The UDS then outputs a fixed alpha value which needs to be programmed
699 * from the input RPF alpha.
700 */
701 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
702 struct vsp1_entity *input,
703 unsigned int alpha)
704 {
705 struct vsp1_entity *entity;
706 struct media_pad *pad;
707
708 pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
709
710 while (pad) {
711 if (!is_media_entity_v4l2_subdev(pad->entity))
712 break;
713
714 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
715
716 /* The BRU background color has a fixed alpha value set to 255,
717 * the output alpha value is thus always equal to 255.
718 */
719 if (entity->type == VSP1_ENTITY_BRU)
720 alpha = 255;
721
722 if (entity->type == VSP1_ENTITY_UDS) {
723 struct vsp1_uds *uds = to_uds(&entity->subdev);
724
725 vsp1_uds_set_alpha(uds, alpha);
726 break;
727 }
728
729 pad = &entity->pads[entity->source_pad];
730 pad = media_entity_remote_pad(pad);
731 }
732 }
733
734 void vsp1_pipelines_suspend(struct vsp1_device *vsp1)
735 {
736 unsigned long flags;
737 unsigned int i;
738 int ret;
739
740 /* To avoid increasing the system suspend time needlessly, loop over the
741 * pipelines twice, first to set them all to the stopping state, and then
742 * to wait for the stop to complete.
743 */
744 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
745 struct vsp1_rwpf *wpf = vsp1->wpf[i];
746 struct vsp1_pipeline *pipe;
747
748 if (wpf == NULL)
749 continue;
750
751 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
752 if (pipe == NULL)
753 continue;
754
755 spin_lock_irqsave(&pipe->irqlock, flags);
756 if (pipe->state == VSP1_PIPELINE_RUNNING)
757 pipe->state = VSP1_PIPELINE_STOPPING;
758 spin_unlock_irqrestore(&pipe->irqlock, flags);
759 }
760
761 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
762 struct vsp1_rwpf *wpf = vsp1->wpf[i];
763 struct vsp1_pipeline *pipe;
764
765 if (wpf == NULL)
766 continue;
767
768 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
769 if (pipe == NULL)
770 continue;
771
772 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
773 msecs_to_jiffies(500));
774 if (ret == 0)
775 dev_warn(vsp1->dev, "pipeline %u stop timeout\n",
776 wpf->entity.index);
777 }
778 }
779
780 void vsp1_pipelines_resume(struct vsp1_device *vsp1)
781 {
782 unsigned int i;
783
784 /* Resume pipeline all running pipelines. */
785 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
786 struct vsp1_rwpf *wpf = vsp1->wpf[i];
787 struct vsp1_pipeline *pipe;
788
789 if (wpf == NULL)
790 continue;
791
792 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
793 if (pipe == NULL)
794 continue;
795
796 if (vsp1_pipeline_ready(pipe))
797 vsp1_pipeline_run(pipe);
798 }
799 }
800
801 /* -----------------------------------------------------------------------------
802 * videobuf2 Queue Operations
803 */
804
805 static int
806 vsp1_video_queue_setup(struct vb2_queue *vq,
807 unsigned int *nbuffers, unsigned int *nplanes,
808 unsigned int sizes[], void *alloc_ctxs[])
809 {
810 struct vsp1_video *video = vb2_get_drv_priv(vq);
811 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
812 unsigned int i;
813
814 if (*nplanes) {
815 if (*nplanes != format->num_planes)
816 return -EINVAL;
817
818 for (i = 0; i < *nplanes; i++) {
819 if (sizes[i] < format->plane_fmt[i].sizeimage)
820 return -EINVAL;
821 alloc_ctxs[i] = video->alloc_ctx;
822 }
823 return 0;
824 }
825
826 *nplanes = format->num_planes;
827
828 for (i = 0; i < format->num_planes; ++i) {
829 sizes[i] = format->plane_fmt[i].sizeimage;
830 alloc_ctxs[i] = video->alloc_ctx;
831 }
832
833 return 0;
834 }
835
836 static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
837 {
838 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
839 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
840 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
841 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
842 unsigned int i;
843
844 if (vb->num_planes < format->num_planes)
845 return -EINVAL;
846
847 buf->mem.num_planes = vb->num_planes;
848
849 for (i = 0; i < vb->num_planes; ++i) {
850 buf->mem.addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
851 buf->mem.length[i] = vb2_plane_size(vb, i);
852
853 if (buf->mem.length[i] < format->plane_fmt[i].sizeimage)
854 return -EINVAL;
855 }
856
857 return 0;
858 }
859
860 static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
861 {
862 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
863 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
864 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
865 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
866 unsigned long flags;
867 bool empty;
868
869 spin_lock_irqsave(&video->irqlock, flags);
870 empty = list_empty(&video->irqqueue);
871 list_add_tail(&buf->queue, &video->irqqueue);
872 spin_unlock_irqrestore(&video->irqlock, flags);
873
874 if (!empty)
875 return;
876
877 spin_lock_irqsave(&pipe->irqlock, flags);
878
879 video->rwpf->ops->set_memory(video->rwpf, &buf->mem);
880 pipe->buffers_ready |= 1 << video->pipe_index;
881
882 if (vb2_is_streaming(&video->queue) &&
883 vsp1_pipeline_ready(pipe))
884 vsp1_pipeline_run(pipe);
885
886 spin_unlock_irqrestore(&pipe->irqlock, flags);
887 }
888
889 static void vsp1_entity_route_setup(struct vsp1_entity *source)
890 {
891 struct vsp1_entity *sink;
892
893 if (source->route->reg == 0)
894 return;
895
896 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
897 vsp1_write(source->vsp1, source->route->reg,
898 sink->route->inputs[source->sink_pad]);
899 }
900
901 static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
902 {
903 struct vsp1_video *video = vb2_get_drv_priv(vq);
904 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
905 struct vsp1_entity *entity;
906 unsigned long flags;
907 int ret;
908
909 mutex_lock(&pipe->lock);
910 if (pipe->stream_count == pipe->num_video - 1) {
911 if (pipe->uds) {
912 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
913
914 /* If a BRU is present in the pipeline before the UDS,
915 * the alpha component doesn't need to be scaled as the
916 * BRU output alpha value is fixed to 255. Otherwise we
917 * need to scale the alpha component only when available
918 * at the input RPF.
919 */
920 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
921 uds->scale_alpha = false;
922 } else {
923 struct vsp1_rwpf *rpf =
924 to_rwpf(&pipe->uds_input->subdev);
925
926 uds->scale_alpha = rpf->fmtinfo->alpha;
927 }
928 }
929
930 list_for_each_entry(entity, &pipe->entities, list_pipe) {
931 vsp1_entity_route_setup(entity);
932
933 ret = v4l2_subdev_call(&entity->subdev, video,
934 s_stream, 1);
935 if (ret < 0) {
936 mutex_unlock(&pipe->lock);
937 return ret;
938 }
939 }
940 }
941
942 pipe->stream_count++;
943 mutex_unlock(&pipe->lock);
944
945 spin_lock_irqsave(&pipe->irqlock, flags);
946 if (vsp1_pipeline_ready(pipe))
947 vsp1_pipeline_run(pipe);
948 spin_unlock_irqrestore(&pipe->irqlock, flags);
949
950 return 0;
951 }
952
953 static void vsp1_video_stop_streaming(struct vb2_queue *vq)
954 {
955 struct vsp1_video *video = vb2_get_drv_priv(vq);
956 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
957 struct vsp1_vb2_buffer *buffer;
958 unsigned long flags;
959 int ret;
960
961 mutex_lock(&pipe->lock);
962 if (--pipe->stream_count == 0) {
963 /* Stop the pipeline. */
964 ret = vsp1_pipeline_stop(pipe);
965 if (ret == -ETIMEDOUT)
966 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
967 }
968 mutex_unlock(&pipe->lock);
969
970 vsp1_pipeline_cleanup(pipe);
971 media_entity_pipeline_stop(&video->video.entity);
972
973 /* Remove all buffers from the IRQ queue. */
974 spin_lock_irqsave(&video->irqlock, flags);
975 list_for_each_entry(buffer, &video->irqqueue, queue)
976 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
977 INIT_LIST_HEAD(&video->irqqueue);
978 spin_unlock_irqrestore(&video->irqlock, flags);
979 }
980
981 static struct vb2_ops vsp1_video_queue_qops = {
982 .queue_setup = vsp1_video_queue_setup,
983 .buf_prepare = vsp1_video_buffer_prepare,
984 .buf_queue = vsp1_video_buffer_queue,
985 .wait_prepare = vb2_ops_wait_prepare,
986 .wait_finish = vb2_ops_wait_finish,
987 .start_streaming = vsp1_video_start_streaming,
988 .stop_streaming = vsp1_video_stop_streaming,
989 };
990
991 /* -----------------------------------------------------------------------------
992 * V4L2 ioctls
993 */
994
995 static int
996 vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
997 {
998 struct v4l2_fh *vfh = file->private_data;
999 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1000
1001 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
1002 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
1003 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
1004
1005 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1006 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
1007 | V4L2_CAP_STREAMING;
1008 else
1009 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
1010 | V4L2_CAP_STREAMING;
1011
1012 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
1013 strlcpy(cap->card, video->video.name, sizeof(cap->card));
1014 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1015 dev_name(video->vsp1->dev));
1016
1017 return 0;
1018 }
1019
1020 static int
1021 vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
1022 {
1023 struct v4l2_fh *vfh = file->private_data;
1024 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1025
1026 if (format->type != video->queue.type)
1027 return -EINVAL;
1028
1029 mutex_lock(&video->lock);
1030 format->fmt.pix_mp = video->rwpf->format;
1031 mutex_unlock(&video->lock);
1032
1033 return 0;
1034 }
1035
1036 static int
1037 vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
1038 {
1039 struct v4l2_fh *vfh = file->private_data;
1040 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1041
1042 if (format->type != video->queue.type)
1043 return -EINVAL;
1044
1045 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
1046 }
1047
1048 static int
1049 vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1050 {
1051 struct v4l2_fh *vfh = file->private_data;
1052 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1053 const struct vsp1_format_info *info;
1054 int ret;
1055
1056 if (format->type != video->queue.type)
1057 return -EINVAL;
1058
1059 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1060 if (ret < 0)
1061 return ret;
1062
1063 mutex_lock(&video->lock);
1064
1065 if (vb2_is_busy(&video->queue)) {
1066 ret = -EBUSY;
1067 goto done;
1068 }
1069
1070 video->rwpf->format = format->fmt.pix_mp;
1071 video->rwpf->fmtinfo = info;
1072
1073 done:
1074 mutex_unlock(&video->lock);
1075 return ret;
1076 }
1077
1078 static int
1079 vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1080 {
1081 struct v4l2_fh *vfh = file->private_data;
1082 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1083 struct vsp1_pipeline *pipe;
1084 int ret;
1085
1086 if (video->queue.owner && video->queue.owner != file->private_data)
1087 return -EBUSY;
1088
1089 video->sequence = 0;
1090
1091 /* Start streaming on the pipeline. No link touching an entity in the
1092 * pipeline can be activated or deactivated once streaming is started.
1093 *
1094 * Use the VSP1 pipeline object embedded in the first video object that
1095 * starts streaming.
1096 */
1097 pipe = video->video.entity.pipe
1098 ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
1099
1100 ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
1101 if (ret < 0)
1102 return ret;
1103
1104 /* Verify that the configured format matches the output of the connected
1105 * subdev.
1106 */
1107 ret = vsp1_video_verify_format(video);
1108 if (ret < 0)
1109 goto err_stop;
1110
1111 ret = vsp1_pipeline_init(pipe, video);
1112 if (ret < 0)
1113 goto err_stop;
1114
1115 /* Start the queue. */
1116 ret = vb2_streamon(&video->queue, type);
1117 if (ret < 0)
1118 goto err_cleanup;
1119
1120 return 0;
1121
1122 err_cleanup:
1123 vsp1_pipeline_cleanup(pipe);
1124 err_stop:
1125 media_entity_pipeline_stop(&video->video.entity);
1126 return ret;
1127 }
1128
1129 static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1130 .vidioc_querycap = vsp1_video_querycap,
1131 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1132 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1133 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1134 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1135 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1136 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1137 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1138 .vidioc_querybuf = vb2_ioctl_querybuf,
1139 .vidioc_qbuf = vb2_ioctl_qbuf,
1140 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1141 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1142 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1143 .vidioc_streamon = vsp1_video_streamon,
1144 .vidioc_streamoff = vb2_ioctl_streamoff,
1145 };
1146
1147 /* -----------------------------------------------------------------------------
1148 * V4L2 File Operations
1149 */
1150
1151 static int vsp1_video_open(struct file *file)
1152 {
1153 struct vsp1_video *video = video_drvdata(file);
1154 struct v4l2_fh *vfh;
1155 int ret = 0;
1156
1157 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1158 if (vfh == NULL)
1159 return -ENOMEM;
1160
1161 v4l2_fh_init(vfh, &video->video);
1162 v4l2_fh_add(vfh);
1163
1164 file->private_data = vfh;
1165
1166 ret = vsp1_device_get(video->vsp1);
1167 if (ret < 0) {
1168 v4l2_fh_del(vfh);
1169 kfree(vfh);
1170 }
1171
1172 return ret;
1173 }
1174
1175 static int vsp1_video_release(struct file *file)
1176 {
1177 struct vsp1_video *video = video_drvdata(file);
1178 struct v4l2_fh *vfh = file->private_data;
1179
1180 mutex_lock(&video->lock);
1181 if (video->queue.owner == vfh) {
1182 vb2_queue_release(&video->queue);
1183 video->queue.owner = NULL;
1184 }
1185 mutex_unlock(&video->lock);
1186
1187 vsp1_device_put(video->vsp1);
1188
1189 v4l2_fh_release(file);
1190
1191 file->private_data = NULL;
1192
1193 return 0;
1194 }
1195
1196 static struct v4l2_file_operations vsp1_video_fops = {
1197 .owner = THIS_MODULE,
1198 .unlocked_ioctl = video_ioctl2,
1199 .open = vsp1_video_open,
1200 .release = vsp1_video_release,
1201 .poll = vb2_fop_poll,
1202 .mmap = vb2_fop_mmap,
1203 };
1204
1205 /* -----------------------------------------------------------------------------
1206 * Initialization and Cleanup
1207 */
1208
1209 struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1,
1210 struct vsp1_rwpf *rwpf)
1211 {
1212 struct vsp1_video *video;
1213 const char *direction;
1214 int ret;
1215
1216 video = devm_kzalloc(vsp1->dev, sizeof(*video), GFP_KERNEL);
1217 if (!video)
1218 return ERR_PTR(-ENOMEM);
1219
1220 rwpf->video = video;
1221
1222 video->vsp1 = vsp1;
1223 video->rwpf = rwpf;
1224
1225 if (rwpf->entity.type == VSP1_ENTITY_RPF) {
1226 direction = "input";
1227 video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1228 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1229 video->video.vfl_dir = VFL_DIR_TX;
1230 } else {
1231 direction = "output";
1232 video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1233 video->pad.flags = MEDIA_PAD_FL_SINK;
1234 video->video.vfl_dir = VFL_DIR_RX;
1235 }
1236
1237 mutex_init(&video->lock);
1238 spin_lock_init(&video->irqlock);
1239 INIT_LIST_HEAD(&video->irqqueue);
1240
1241 mutex_init(&video->pipe.lock);
1242 spin_lock_init(&video->pipe.irqlock);
1243 INIT_LIST_HEAD(&video->pipe.entities);
1244 init_waitqueue_head(&video->pipe.wq);
1245 video->pipe.state = VSP1_PIPELINE_STOPPED;
1246
1247 /* Initialize the media entity... */
1248 ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
1249 if (ret < 0)
1250 return ERR_PTR(ret);
1251
1252 /* ... and the format ... */
1253 rwpf->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
1254 rwpf->format.pixelformat = rwpf->fmtinfo->fourcc;
1255 rwpf->format.colorspace = V4L2_COLORSPACE_SRGB;
1256 rwpf->format.field = V4L2_FIELD_NONE;
1257 rwpf->format.width = VSP1_VIDEO_DEF_WIDTH;
1258 rwpf->format.height = VSP1_VIDEO_DEF_HEIGHT;
1259 rwpf->format.num_planes = 1;
1260 rwpf->format.plane_fmt[0].bytesperline =
1261 rwpf->format.width * rwpf->fmtinfo->bpp[0] / 8;
1262 rwpf->format.plane_fmt[0].sizeimage =
1263 rwpf->format.plane_fmt[0].bytesperline * rwpf->format.height;
1264
1265 /* ... and the video node... */
1266 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1267 video->video.fops = &vsp1_video_fops;
1268 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1269 rwpf->entity.subdev.name, direction);
1270 video->video.vfl_type = VFL_TYPE_GRABBER;
1271 video->video.release = video_device_release_empty;
1272 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1273
1274 video_set_drvdata(&video->video, video);
1275
1276 /* ... and the buffers queue... */
1277 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
1278 if (IS_ERR(video->alloc_ctx)) {
1279 ret = PTR_ERR(video->alloc_ctx);
1280 goto error;
1281 }
1282
1283 video->queue.type = video->type;
1284 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1285 video->queue.lock = &video->lock;
1286 video->queue.drv_priv = video;
1287 video->queue.buf_struct_size = sizeof(struct vsp1_vb2_buffer);
1288 video->queue.ops = &vsp1_video_queue_qops;
1289 video->queue.mem_ops = &vb2_dma_contig_memops;
1290 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1291 ret = vb2_queue_init(&video->queue);
1292 if (ret < 0) {
1293 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1294 goto error;
1295 }
1296
1297 /* ... and register the video device. */
1298 video->video.queue = &video->queue;
1299 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1300 if (ret < 0) {
1301 dev_err(video->vsp1->dev, "failed to register video device\n");
1302 goto error;
1303 }
1304
1305 return video;
1306
1307 error:
1308 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1309 vsp1_video_cleanup(video);
1310 return ERR_PTR(ret);
1311 }
1312
1313 void vsp1_video_cleanup(struct vsp1_video *video)
1314 {
1315 if (video_is_registered(&video->video))
1316 video_unregister_device(&video->video);
1317
1318 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1319 media_entity_cleanup(&video->video.entity);
1320 }
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