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[media] media: videobuf2: Replace videobuf2-core with videobuf2-v4l2
[linux-2.6-block.git] / drivers / media / platform / vsp1 / vsp1_video.c
CommitLineData
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>
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>
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
LP		 32#include "vsp1_entity.h"
33#include "vsp1_rwpf.h"
bdc2df62 34#include "vsp1_uds.h"
26e0ca22
LP		 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
50static const struct vsp1_format_info vsp1_video_formats[] = {
27ffaeb0 51 { V4L2_PIX_FMT_RGB332, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 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,
7a52b6de 54 1, { 8, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 55 { V4L2_PIX_FMT_ARGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
7a52b6de
LP		 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 },
27ffaeb0 59 { V4L2_PIX_FMT_XRGB444, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 60 VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
61 VI6_RPF_DSWAP_P_WDS,
7a52b6de 62 1, { 16, 0, 0 }, false, false, 1, 1, true },
27ffaeb0 63 { V4L2_PIX_FMT_ARGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
7a52b6de
LP		 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 },
27ffaeb0 67 { V4L2_PIX_FMT_XRGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 68 VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
69 VI6_RPF_DSWAP_P_WDS,
7a52b6de 70 1, { 16, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 71 { V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 72 VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
73 VI6_RPF_DSWAP_P_WDS,
7a52b6de 74 1, { 16, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 75 { V4L2_PIX_FMT_BGR24, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 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,
7a52b6de 78 1, { 24, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 79 { V4L2_PIX_FMT_RGB24, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 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,
7a52b6de 82 1, { 24, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 83 { V4L2_PIX_FMT_ABGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
7a52b6de
LP		 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 },
27ffaeb0 86 { V4L2_PIX_FMT_XBGR32, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22 87 VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
7a52b6de 88 1, { 32, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 89 { V4L2_PIX_FMT_ARGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
7a52b6de
LP		 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 },
27ffaeb0 93 { V4L2_PIX_FMT_XRGB32, MEDIA_BUS_FMT_ARGB8888_1X32,
26e0ca22
LP		 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,
7a52b6de 96 1, { 32, 0, 0 }, false, false, 1, 1, false },
27ffaeb0 97 { V4L2_PIX_FMT_UYVY, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 100 1, { 16, 0, 0 }, false, false, 2, 1, false },
27ffaeb0 101 { V4L2_PIX_FMT_VYUY, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 104 1, { 16, 0, 0 }, false, true, 2, 1, false },
27ffaeb0 105 { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 108 1, { 16, 0, 0 }, true, false, 2, 1, false },
27ffaeb0 109 { V4L2_PIX_FMT_YVYU, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 112 1, { 16, 0, 0 }, true, true, 2, 1, false },
27ffaeb0 113 { V4L2_PIX_FMT_NV12M, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 116 2, { 8, 16, 0 }, false, false, 2, 2, false },
27ffaeb0 117 { V4L2_PIX_FMT_NV21M, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 120 2, { 8, 16, 0 }, false, true, 2, 2, false },
27ffaeb0 121 { V4L2_PIX_FMT_NV16M, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 124 2, { 8, 16, 0 }, false, false, 2, 1, false },
27ffaeb0 125 { V4L2_PIX_FMT_NV61M, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 128 2, { 8, 16, 0 }, false, true, 2, 1, false },
27ffaeb0 129 { V4L2_PIX_FMT_YUV420M, MEDIA_BUS_FMT_AYUV8_1X32,
26e0ca22
LP		 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,
7a52b6de 132 3, { 8, 8, 8 }, false, false, 2, 2, false },
26e0ca22
LP		 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 */
142static 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
157static struct v4l2_subdev *
158vsp1_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
173static 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
196static int __vsp1_video_try_format(struct vsp1_video *video,
197 struct v4l2_pix_format_mplane *pix,
198 const struct vsp1_format_info **fmtinfo)
199{
56bfef3e
LP		 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
26e0ca22
LP		 207 const struct vsp1_format_info *info;
208 unsigned int width = pix->width;
209 unsigned int height = pix->height;
210 unsigned int i;
211
56bfef3e
LP		 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
26e0ca22
LP		 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 */
df5c3e7c 248 for (i = 0; i < min(info->planes, 2U); ++i) {
26e0ca22
LP		 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
277static bool
278vsp1_video_format_adjust(struct vsp1_video *video,
279 const struct v4l2_pix_format_mplane *format,
280 struct v4l2_pix_format_mplane *adjust)
281{
282 unsigned int i;
283
284 *adjust = *format;
285 __vsp1_video_try_format(video, adjust, NULL);
286
287 if (format->width != adjust->width ||
288 format->height != adjust->height ||
289 format->pixelformat != adjust->pixelformat ||
290 format->num_planes != adjust->num_planes)
291 return false;
292
293 for (i = 0; i < format->num_planes; ++i) {
294 if (format->plane_fmt[i].bytesperline !=
295 adjust->plane_fmt[i].bytesperline)
296 return false;
297
298 adjust->plane_fmt[i].sizeimage =
299 max(adjust->plane_fmt[i].sizeimage,
300 format->plane_fmt[i].sizeimage);
301 }
302
303 return true;
304}
305
306/* -----------------------------------------------------------------------------
307 * Pipeline Management
308 */
309
bdc2df62
LP		 310static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
311 struct vsp1_rwpf *input,
26e0ca22
LP		 312 struct vsp1_rwpf *output)
313{
314 struct vsp1_entity *entity;
315 unsigned int entities = 0;
316 struct media_pad *pad;
bdc2df62 317 bool bru_found = false;
26e0ca22 318
629bb6d4
LP		 319 input->location.left = 0;
320 input->location.top = 0;
321
26e0ca22
LP		 322 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
323
324 while (1) {
325 if (pad == NULL)
326 return -EPIPE;
327
328 /* We've reached a video node, that shouldn't have happened. */
329 if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
330 return -EPIPE;
331
332 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
333
629bb6d4
LP		 334 /* A BRU is present in the pipeline, store the compose rectangle
335 * location in the input RPF for use when configuring the RPF.
336 */
337 if (entity->type == VSP1_ENTITY_BRU) {
338 struct vsp1_bru *bru = to_bru(&entity->subdev);
6418b4d6
LP		 339 struct v4l2_rect *rect =
340 &bru->inputs[pad->index].compose;
341
342 bru->inputs[pad->index].rpf = input;
629bb6d4
LP		 343
344 input->location.left = rect->left;
345 input->location.top = rect->top;
bdc2df62
LP		 346
347 bru_found = true;
629bb6d4
LP		 348 }
349
26e0ca22
LP		 350 /* We've reached the WPF, we're done. */
351 if (entity->type == VSP1_ENTITY_WPF)
352 break;
353
354 /* Ensure the branch has no loop. */
355 if (entities & (1 << entity->subdev.entity.id))
356 return -EPIPE;
357
358 entities |= 1 << entity->subdev.entity.id;
359
360 /* UDS can't be chained. */
361 if (entity->type == VSP1_ENTITY_UDS) {
bdc2df62 362 if (pipe->uds)
26e0ca22 363 return -EPIPE;
bdc2df62
LP		 364
365 pipe->uds = entity;
366 pipe->uds_input = bru_found ? pipe->bru
367 : &input->entity;
26e0ca22
LP		 368 }
369
370 /* Follow the source link. The link setup operations ensure
371 * that the output fan-out can't be more than one, there is thus
372 * no need to verify here that only a single source link is
373 * activated.
374 */
375 pad = &entity->pads[entity->source_pad];
376 pad = media_entity_remote_pad(pad);
377 }
378
379 /* The last entity must be the output WPF. */
380 if (entity != &output->entity)
381 return -EPIPE;
382
383 return 0;
384}
385
6418b4d6
LP		 386static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
387{
388 if (pipe->bru) {
389 struct vsp1_bru *bru = to_bru(&pipe->bru->subdev);
390 unsigned int i;
391
392 for (i = 0; i < ARRAY_SIZE(bru->inputs); ++i)
393 bru->inputs[i].rpf = NULL;
394 }
395
396 INIT_LIST_HEAD(&pipe->entities);
397 pipe->state = VSP1_PIPELINE_STOPPED;
398 pipe->buffers_ready = 0;
399 pipe->num_video = 0;
400 pipe->num_inputs = 0;
401 pipe->output = NULL;
402 pipe->bru = NULL;
403 pipe->lif = NULL;
bdc2df62 404 pipe->uds = NULL;
6418b4d6
LP		 405}
406
26e0ca22
LP		 407static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
408 struct vsp1_video *video)
409{
410 struct media_entity_graph graph;
411 struct media_entity *entity = &video->video.entity;
412 struct media_device *mdev = entity->parent;
413 unsigned int i;
414 int ret;
415
416 mutex_lock(&mdev->graph_mutex);
417
418 /* Walk the graph to locate the entities and video nodes. */
419 media_entity_graph_walk_start(&graph, entity);
420
421 while ((entity = media_entity_graph_walk_next(&graph))) {
422 struct v4l2_subdev *subdev;
423 struct vsp1_rwpf *rwpf;
424 struct vsp1_entity *e;
425
426 if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
427 pipe->num_video++;
428 continue;
429 }
430
431 subdev = media_entity_to_v4l2_subdev(entity);
432 e = to_vsp1_entity(subdev);
433 list_add_tail(&e->list_pipe, &pipe->entities);
434
435 if (e->type == VSP1_ENTITY_RPF) {
436 rwpf = to_rwpf(subdev);
437 pipe->inputs[pipe->num_inputs++] = rwpf;
438 rwpf->video.pipe_index = pipe->num_inputs;
439 } else if (e->type == VSP1_ENTITY_WPF) {
440 rwpf = to_rwpf(subdev);
441 pipe->output = to_rwpf(subdev);
442 rwpf->video.pipe_index = 0;
443 } else if (e->type == VSP1_ENTITY_LIF) {
444 pipe->lif = e;
629bb6d4
LP		 445 } else if (e->type == VSP1_ENTITY_BRU) {
446 pipe->bru = e;
26e0ca22
LP		 447 }
448 }
449
450 mutex_unlock(&mdev->graph_mutex);
451
452 /* We need one output and at least one input. */
453 if (pipe->num_inputs == 0 || !pipe->output) {
454 ret = -EPIPE;
455 goto error;
456 }
457
458 /* Follow links downstream for each input and make sure the graph
459 * contains no loop and that all branches end at the output WPF.
460 */
461 for (i = 0; i < pipe->num_inputs; ++i) {
bdc2df62 462 ret = vsp1_pipeline_validate_branch(pipe, pipe->inputs[i],
26e0ca22
LP		 463 pipe->output);
464 if (ret < 0)
465 goto error;
466 }
467
468 return 0;
469
470error:
6418b4d6 471 __vsp1_pipeline_cleanup(pipe);
26e0ca22
LP		 472 return ret;
473}
474
475static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
476 struct vsp1_video *video)
477{
478 int ret;
479
480 mutex_lock(&pipe->lock);
481
482 /* If we're the first user validate and initialize the pipeline. */
483 if (pipe->use_count == 0) {
484 ret = vsp1_pipeline_validate(pipe, video);
485 if (ret < 0)
486 goto done;
487 }
488
489 pipe->use_count++;
490 ret = 0;
491
492done:
493 mutex_unlock(&pipe->lock);
494 return ret;
495}
496
497static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
498{
499 mutex_lock(&pipe->lock);
500
501 /* If we're the last user clean up the pipeline. */
6418b4d6
LP		 502 if (--pipe->use_count == 0)
503 __vsp1_pipeline_cleanup(pipe);
26e0ca22
LP		 504
505 mutex_unlock(&pipe->lock);
506}
507
508static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
509{
510 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
511
512 vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
513 pipe->state = VSP1_PIPELINE_RUNNING;
514 pipe->buffers_ready = 0;
515}
516
41bdc3cf 517static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)
1c991fee
LP		 518{
519 unsigned long flags;
520 bool stopped;
521
522 spin_lock_irqsave(&pipe->irqlock, flags);
523 stopped = pipe->state == VSP1_PIPELINE_STOPPED,
524 spin_unlock_irqrestore(&pipe->irqlock, flags);
525
526 return stopped;
527}
528
26e0ca22
LP		 529static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
530{
531 struct vsp1_entity *entity;
532 unsigned long flags;
533 int ret;
534
535 spin_lock_irqsave(&pipe->irqlock, flags);
9b3e6e2a
LP		 536 if (pipe->state == VSP1_PIPELINE_RUNNING)
537 pipe->state = VSP1_PIPELINE_STOPPING;
26e0ca22
LP		 538 spin_unlock_irqrestore(&pipe->irqlock, flags);
539
1c991fee 540 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
26e0ca22
LP		 541 msecs_to_jiffies(500));
542 ret = ret == 0 ? -ETIMEDOUT : 0;
543
544 list_for_each_entry(entity, &pipe->entities, list_pipe) {
aaa48cbb 545 if (entity->route && entity->route->reg)
d9b45ed3 546 vsp1_write(entity->vsp1, entity->route->reg,
26e0ca22
LP		 547 VI6_DPR_NODE_UNUSED);
548
549 v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
550 }
551
552 return ret;
553}
554
555static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
556{
557 unsigned int mask;
558
559 mask = ((1 << pipe->num_inputs) - 1) << 1;
560 if (!pipe->lif)
561 mask |= 1 << 0;
562
563 return pipe->buffers_ready == mask;
564}
565
566/*
567 * vsp1_video_complete_buffer - Complete the current buffer
568 * @video: the video node
569 *
570 * This function completes the current buffer by filling its sequence number,
571 * time stamp and payload size, and hands it back to the videobuf core.
572 *
3299ba5c
LP		 573 * When operating in DU output mode (deep pipeline to the DU through the LIF),
574 * the VSP1 needs to constantly supply frames to the display. In that case, if
575 * no other buffer is queued, reuse the one that has just been processed instead
576 * of handing it back to the videobuf core.
577 *
26e0ca22
LP		 578 * Return the next queued buffer or NULL if the queue is empty.
579 */
580static struct vsp1_video_buffer *
581vsp1_video_complete_buffer(struct vsp1_video *video)
582{
3299ba5c 583 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
26e0ca22
LP		 584 struct vsp1_video_buffer *next = NULL;
585 struct vsp1_video_buffer *done;
586 unsigned long flags;
587 unsigned int i;
588
589 spin_lock_irqsave(&video->irqlock, flags);
590
591 if (list_empty(&video->irqqueue)) {
592 spin_unlock_irqrestore(&video->irqlock, flags);
593 return NULL;
594 }
595
596 done = list_first_entry(&video->irqqueue,
597 struct vsp1_video_buffer, queue);
3299ba5c
LP		 598
599 /* In DU output mode reuse the buffer if the list is singular. */
600 if (pipe->lif && list_is_singular(&video->irqqueue)) {
601 spin_unlock_irqrestore(&video->irqlock, flags);
602 return done;
603 }
604
26e0ca22
LP		 605 list_del(&done->queue);
606
607 if (!list_empty(&video->irqqueue))
608 next = list_first_entry(&video->irqqueue,
609 struct vsp1_video_buffer, queue);
610
611 spin_unlock_irqrestore(&video->irqlock, flags);
612
613 done->buf.v4l2_buf.sequence = video->sequence++;
614 v4l2_get_timestamp(&done->buf.v4l2_buf.timestamp);
615 for (i = 0; i < done->buf.num_planes; ++i)
616 vb2_set_plane_payload(&done->buf, i, done->length[i]);
617 vb2_buffer_done(&done->buf, VB2_BUF_STATE_DONE);
618
619 return next;
620}
621
622static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
623 struct vsp1_video *video)
624{
625 struct vsp1_video_buffer *buf;
626 unsigned long flags;
627
628 buf = vsp1_video_complete_buffer(video);
629 if (buf == NULL)
630 return;
631
632 spin_lock_irqsave(&pipe->irqlock, flags);
633
634 video->ops->queue(video, buf);
635 pipe->buffers_ready |= 1 << video->pipe_index;
636
637 spin_unlock_irqrestore(&pipe->irqlock, flags);
638}
639
640void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
641{
9b3e6e2a 642 enum vsp1_pipeline_state state;
26e0ca22
LP		 643 unsigned long flags;
644 unsigned int i;
645
646 if (pipe == NULL)
647 return;
648
649 /* Complete buffers on all video nodes. */
650 for (i = 0; i < pipe->num_inputs; ++i)
651 vsp1_video_frame_end(pipe, &pipe->inputs[i]->video);
652
653 if (!pipe->lif)
654 vsp1_video_frame_end(pipe, &pipe->output->video);
655
656 spin_lock_irqsave(&pipe->irqlock, flags);
657
9b3e6e2a
LP		 658 state = pipe->state;
659 pipe->state = VSP1_PIPELINE_STOPPED;
660
26e0ca22
LP		 661 /* If a stop has been requested, mark the pipeline as stopped and
662 * return.
663 */
9b3e6e2a 664 if (state == VSP1_PIPELINE_STOPPING) {
26e0ca22
LP		 665 wake_up(&pipe->wq);
666 goto done;
667 }
668
669 /* Restart the pipeline if ready. */
670 if (vsp1_pipeline_ready(pipe))
671 vsp1_pipeline_run(pipe);
672
673done:
674 spin_unlock_irqrestore(&pipe->irqlock, flags);
675}
676
bdc2df62
LP		 677/*
678 * Propagate the alpha value through the pipeline.
679 *
680 * As the UDS has restricted scaling capabilities when the alpha component needs
681 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
682 * value. The UDS then outputs a fixed alpha value which needs to be programmed
683 * from the input RPF alpha.
684 */
685void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
686 struct vsp1_entity *input,
687 unsigned int alpha)
688{
689 struct vsp1_entity *entity;
690 struct media_pad *pad;
691
692 pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
693
694 while (pad) {
695 if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
696 break;
697
698 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
699
700 /* The BRU background color has a fixed alpha value set to 255,
701 * the output alpha value is thus always equal to 255.
702 */
703 if (entity->type == VSP1_ENTITY_BRU)
704 alpha = 255;
705
706 if (entity->type == VSP1_ENTITY_UDS) {
707 struct vsp1_uds *uds = to_uds(&entity->subdev);
708
709 vsp1_uds_set_alpha(uds, alpha);
710 break;
711 }
712
713 pad = &entity->pads[entity->source_pad];
714 pad = media_entity_remote_pad(pad);
715 }
716}
717
139c9286
SF		 718void vsp1_pipelines_suspend(struct vsp1_device *vsp1)
719{
720 unsigned long flags;
721 unsigned int i;
722 int ret;
723
724 /* To avoid increasing the system suspend time needlessly, loop over the
725 * pipelines twice, first to set them all to the stopping state, and then
726 * to wait for the stop to complete.
727 */
728 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
729 struct vsp1_rwpf *wpf = vsp1->wpf[i];
730 struct vsp1_pipeline *pipe;
731
732 if (wpf == NULL)
733 continue;
734
735 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
736 if (pipe == NULL)
737 continue;
738
739 spin_lock_irqsave(&pipe->irqlock, flags);
740 if (pipe->state == VSP1_PIPELINE_RUNNING)
741 pipe->state = VSP1_PIPELINE_STOPPING;
742 spin_unlock_irqrestore(&pipe->irqlock, flags);
743 }
744
745 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
746 struct vsp1_rwpf *wpf = vsp1->wpf[i];
747 struct vsp1_pipeline *pipe;
748
749 if (wpf == NULL)
750 continue;
751
752 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
753 if (pipe == NULL)
754 continue;
755
1c991fee 756 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
139c9286
SF		 757 msecs_to_jiffies(500));
758 if (ret == 0)
759 dev_warn(vsp1->dev, "pipeline %u stop timeout\n",
760 wpf->entity.index);
761 }
762}
763
764void vsp1_pipelines_resume(struct vsp1_device *vsp1)
765{
766 unsigned int i;
767
768 /* Resume pipeline all running pipelines. */
769 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
770 struct vsp1_rwpf *wpf = vsp1->wpf[i];
771 struct vsp1_pipeline *pipe;
772
773 if (wpf == NULL)
774 continue;
775
776 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
777 if (pipe == NULL)
778 continue;
779
780 if (vsp1_pipeline_ready(pipe))
781 vsp1_pipeline_run(pipe);
782 }
783}
784
26e0ca22
LP		 785/* -----------------------------------------------------------------------------
786 * videobuf2 Queue Operations
787 */
788
789static int
790vsp1_video_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
791 unsigned int *nbuffers, unsigned int *nplanes,
792 unsigned int sizes[], void *alloc_ctxs[])
793{
794 struct vsp1_video *video = vb2_get_drv_priv(vq);
795 const struct v4l2_pix_format_mplane *format;
796 struct v4l2_pix_format_mplane pix_mp;
797 unsigned int i;
798
799 if (fmt) {
800 /* Make sure the format is valid and adjust the sizeimage field
801 * if needed.
802 */
803 if (!vsp1_video_format_adjust(video, &fmt->fmt.pix_mp, &pix_mp))
804 return -EINVAL;
805
806 format = &pix_mp;
807 } else {
808 format = &video->format;
809 }
810
811 *nplanes = format->num_planes;
812
813 for (i = 0; i < format->num_planes; ++i) {
814 sizes[i] = format->plane_fmt[i].sizeimage;
815 alloc_ctxs[i] = video->alloc_ctx;
816 }
817
818 return 0;
819}
820
821static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
822{
823 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
824 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vb);
825 const struct v4l2_pix_format_mplane *format = &video->format;
826 unsigned int i;
827
828 if (vb->num_planes < format->num_planes)
829 return -EINVAL;
830
26e0ca22
LP		 831 for (i = 0; i < vb->num_planes; ++i) {
832 buf->addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
833 buf->length[i] = vb2_plane_size(vb, i);
834
835 if (buf->length[i] < format->plane_fmt[i].sizeimage)
836 return -EINVAL;
837 }
838
839 return 0;
840}
841
842static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
843{
844 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
845 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
846 struct vsp1_video_buffer *buf = to_vsp1_video_buffer(vb);
847 unsigned long flags;
848 bool empty;
849
850 spin_lock_irqsave(&video->irqlock, flags);
851 empty = list_empty(&video->irqqueue);
852 list_add_tail(&buf->queue, &video->irqqueue);
853 spin_unlock_irqrestore(&video->irqlock, flags);
854
855 if (!empty)
856 return;
857
858 spin_lock_irqsave(&pipe->irqlock, flags);
859
860 video->ops->queue(video, buf);
861 pipe->buffers_ready |= 1 << video->pipe_index;
862
863 if (vb2_is_streaming(&video->queue) &&
864 vsp1_pipeline_ready(pipe))
865 vsp1_pipeline_run(pipe);
866
867 spin_unlock_irqrestore(&pipe->irqlock, flags);
868}
869
870static void vsp1_entity_route_setup(struct vsp1_entity *source)
871{
872 struct vsp1_entity *sink;
873
d9b45ed3 874 if (source->route->reg == 0)
26e0ca22
LP		 875 return;
876
877 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
d9b45ed3
LP		 878 vsp1_write(source->vsp1, source->route->reg,
879 sink->route->inputs[source->sink_pad]);
26e0ca22
LP		 880}
881
882static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
883{
884 struct vsp1_video *video = vb2_get_drv_priv(vq);
885 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
886 struct vsp1_entity *entity;
887 unsigned long flags;
888 int ret;
889
890 mutex_lock(&pipe->lock);
891 if (pipe->stream_count == pipe->num_video - 1) {
bdc2df62
LP		 892 if (pipe->uds) {
893 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
894
895 /* If a BRU is present in the pipeline before the UDS,
896 * the alpha component doesn't need to be scaled as the
897 * BRU output alpha value is fixed to 255. Otherwise we
898 * need to scale the alpha component only when available
899 * at the input RPF.
900 */
901 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
902 uds->scale_alpha = false;
903 } else {
904 struct vsp1_rwpf *rpf =
905 to_rwpf(&pipe->uds_input->subdev);
906
907 uds->scale_alpha = rpf->video.fmtinfo->alpha;
908 }
909 }
910
26e0ca22
LP		 911 list_for_each_entry(entity, &pipe->entities, list_pipe) {
912 vsp1_entity_route_setup(entity);
913
914 ret = v4l2_subdev_call(&entity->subdev, video,
915 s_stream, 1);
916 if (ret < 0) {
917 mutex_unlock(&pipe->lock);
918 return ret;
919 }
920 }
921 }
922
923 pipe->stream_count++;
924 mutex_unlock(&pipe->lock);
925
926 spin_lock_irqsave(&pipe->irqlock, flags);
927 if (vsp1_pipeline_ready(pipe))
928 vsp1_pipeline_run(pipe);
929 spin_unlock_irqrestore(&pipe->irqlock, flags);
930
931 return 0;
932}
933
e37559b2 934static void vsp1_video_stop_streaming(struct vb2_queue *vq)
26e0ca22
LP		 935{
936 struct vsp1_video *video = vb2_get_drv_priv(vq);
937 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
9df04e9d 938 struct vsp1_video_buffer *buffer;
26e0ca22
LP		 939 unsigned long flags;
940 int ret;
941
942 mutex_lock(&pipe->lock);
943 if (--pipe->stream_count == 0) {
944 /* Stop the pipeline. */
945 ret = vsp1_pipeline_stop(pipe);
946 if (ret == -ETIMEDOUT)
947 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
948 }
949 mutex_unlock(&pipe->lock);
950
951 vsp1_pipeline_cleanup(pipe);
952 media_entity_pipeline_stop(&video->video.entity);
953
954 /* Remove all buffers from the IRQ queue. */
955 spin_lock_irqsave(&video->irqlock, flags);
9df04e9d
LP		 956 list_for_each_entry(buffer, &video->irqqueue, queue)
957 vb2_buffer_done(&buffer->buf, VB2_BUF_STATE_ERROR);
26e0ca22
LP		 958 INIT_LIST_HEAD(&video->irqqueue);
959 spin_unlock_irqrestore(&video->irqlock, flags);
26e0ca22
LP		 960}
961
962static struct vb2_ops vsp1_video_queue_qops = {
963 .queue_setup = vsp1_video_queue_setup,
964 .buf_prepare = vsp1_video_buffer_prepare,
965 .buf_queue = vsp1_video_buffer_queue,
966 .wait_prepare = vb2_ops_wait_prepare,
967 .wait_finish = vb2_ops_wait_finish,
968 .start_streaming = vsp1_video_start_streaming,
969 .stop_streaming = vsp1_video_stop_streaming,
970};
971
972/* -----------------------------------------------------------------------------
973 * V4L2 ioctls
974 */
975
976static int
977vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
978{
979 struct v4l2_fh *vfh = file->private_data;
980 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
981
982 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
983 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
984 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
985
986 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
987 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
988 | V4L2_CAP_STREAMING;
989 else
990 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
991 | V4L2_CAP_STREAMING;
992
993 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
994 strlcpy(cap->card, video->video.name, sizeof(cap->card));
995 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
996 dev_name(video->vsp1->dev));
997
998 return 0;
999}
1000
1001static int
1002vsp1_video_get_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
1007 if (format->type != video->queue.type)
1008 return -EINVAL;
1009
1010 mutex_lock(&video->lock);
1011 format->fmt.pix_mp = video->format;
1012 mutex_unlock(&video->lock);
1013
1014 return 0;
1015}
1016
1017static int
1018vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
1019{
1020 struct v4l2_fh *vfh = file->private_data;
1021 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1022
1023 if (format->type != video->queue.type)
1024 return -EINVAL;
1025
1026 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
1027}
1028
1029static int
1030vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1031{
1032 struct v4l2_fh *vfh = file->private_data;
1033 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1034 const struct vsp1_format_info *info;
1035 int ret;
1036
1037 if (format->type != video->queue.type)
1038 return -EINVAL;
1039
1040 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1041 if (ret < 0)
1042 return ret;
1043
1044 mutex_lock(&video->lock);
1045
1046 if (vb2_is_busy(&video->queue)) {
1047 ret = -EBUSY;
1048 goto done;
1049 }
1050
1051 video->format = format->fmt.pix_mp;
1052 video->fmtinfo = info;
1053
1054done:
1055 mutex_unlock(&video->lock);
1056 return ret;
1057}
1058
1059static int
1060vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1061{
1062 struct v4l2_fh *vfh = file->private_data;
1063 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1064 struct vsp1_pipeline *pipe;
1065 int ret;
1066
26e0ca22
LP		 1067 if (video->queue.owner && video->queue.owner != file->private_data)
1068 return -EBUSY;
1069
1070 video->sequence = 0;
1071
1072 /* Start streaming on the pipeline. No link touching an entity in the
1073 * pipeline can be activated or deactivated once streaming is started.
1074 *
1075 * Use the VSP1 pipeline object embedded in the first video object that
1076 * starts streaming.
1077 */
1078 pipe = video->video.entity.pipe
1079 ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
1080
1081 ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
1082 if (ret < 0)
1083 return ret;
1084
1085 /* Verify that the configured format matches the output of the connected
1086 * subdev.
1087 */
1088 ret = vsp1_video_verify_format(video);
1089 if (ret < 0)
1090 goto err_stop;
1091
1092 ret = vsp1_pipeline_init(pipe, video);
1093 if (ret < 0)
1094 goto err_stop;
1095
1096 /* Start the queue. */
1097 ret = vb2_streamon(&video->queue, type);
1098 if (ret < 0)
1099 goto err_cleanup;
1100
1101 return 0;
1102
1103err_cleanup:
1104 vsp1_pipeline_cleanup(pipe);
1105err_stop:
1106 media_entity_pipeline_stop(&video->video.entity);
1107 return ret;
1108}
1109
1110static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1111 .vidioc_querycap = vsp1_video_querycap,
1112 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1113 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1114 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1115 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1116 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1117 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1118 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1119 .vidioc_querybuf = vb2_ioctl_querybuf,
1120 .vidioc_qbuf = vb2_ioctl_qbuf,
1121 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1122 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1123 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1124 .vidioc_streamon = vsp1_video_streamon,
1125 .vidioc_streamoff = vb2_ioctl_streamoff,
1126};
1127
1128/* -----------------------------------------------------------------------------
1129 * V4L2 File Operations
1130 */
1131
1132static int vsp1_video_open(struct file *file)
1133{
1134 struct vsp1_video *video = video_drvdata(file);
1135 struct v4l2_fh *vfh;
1136 int ret = 0;
1137
1138 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1139 if (vfh == NULL)
1140 return -ENOMEM;
1141
1142 v4l2_fh_init(vfh, &video->video);
1143 v4l2_fh_add(vfh);
1144
1145 file->private_data = vfh;
1146
4c16d6a0
LP		 1147 ret = vsp1_device_get(video->vsp1);
1148 if (ret < 0) {
26e0ca22
LP		 1149 v4l2_fh_del(vfh);
1150 kfree(vfh);
1151 }
1152
1153 return ret;
1154}
1155
1156static int vsp1_video_release(struct file *file)
1157{
1158 struct vsp1_video *video = video_drvdata(file);
1159 struct v4l2_fh *vfh = file->private_data;
1160
1161 mutex_lock(&video->lock);
1162 if (video->queue.owner == vfh) {
1163 vb2_queue_release(&video->queue);
1164 video->queue.owner = NULL;
1165 }
1166 mutex_unlock(&video->lock);
1167
1168 vsp1_device_put(video->vsp1);
1169
1170 v4l2_fh_release(file);
1171
1172 file->private_data = NULL;
1173
1174 return 0;
1175}
1176
1177static struct v4l2_file_operations vsp1_video_fops = {
1178 .owner = THIS_MODULE,
1179 .unlocked_ioctl = video_ioctl2,
1180 .open = vsp1_video_open,
1181 .release = vsp1_video_release,
1182 .poll = vb2_fop_poll,
1183 .mmap = vb2_fop_mmap,
1184};
1185
1186/* -----------------------------------------------------------------------------
1187 * Initialization and Cleanup
1188 */
1189
1190int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
1191{
1192 const char *direction;
1193 int ret;
1194
1195 switch (video->type) {
1196 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1197 direction = "output";
1198 video->pad.flags = MEDIA_PAD_FL_SINK;
1199 break;
1200
1201 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1202 direction = "input";
1203 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1204 video->video.vfl_dir = VFL_DIR_TX;
1205 break;
1206
1207 default:
1208 return -EINVAL;
1209 }
1210
1211 video->rwpf = rwpf;
1212
1213 mutex_init(&video->lock);
1214 spin_lock_init(&video->irqlock);
1215 INIT_LIST_HEAD(&video->irqqueue);
1216
1217 mutex_init(&video->pipe.lock);
1218 spin_lock_init(&video->pipe.irqlock);
1219 INIT_LIST_HEAD(&video->pipe.entities);
1220 init_waitqueue_head(&video->pipe.wq);
1221 video->pipe.state = VSP1_PIPELINE_STOPPED;
1222
1223 /* Initialize the media entity... */
1224 ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
1225 if (ret < 0)
1226 return ret;
1227
1228 /* ... and the format ... */
1229 video->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
1230 video->format.pixelformat = video->fmtinfo->fourcc;
1231 video->format.colorspace = V4L2_COLORSPACE_SRGB;
1232 video->format.field = V4L2_FIELD_NONE;
1233 video->format.width = VSP1_VIDEO_DEF_WIDTH;
1234 video->format.height = VSP1_VIDEO_DEF_HEIGHT;
1235 video->format.num_planes = 1;
1236 video->format.plane_fmt[0].bytesperline =
1237 video->format.width * video->fmtinfo->bpp[0] / 8;
1238 video->format.plane_fmt[0].sizeimage =
1239 video->format.plane_fmt[0].bytesperline * video->format.height;
1240
1241 /* ... and the video node... */
1242 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1243 video->video.fops = &vsp1_video_fops;
1244 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
1245 rwpf->subdev.name, direction);
1246 video->video.vfl_type = VFL_TYPE_GRABBER;
1247 video->video.release = video_device_release_empty;
1248 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1249
1250 video_set_drvdata(&video->video, video);
1251
1252 /* ... and the buffers queue... */
1253 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
b317828b
WY		 1254 if (IS_ERR(video->alloc_ctx)) {
1255 ret = PTR_ERR(video->alloc_ctx);
26e0ca22 1256 goto error;
b317828b 1257 }
26e0ca22
LP		 1258
1259 video->queue.type = video->type;
1260 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1261 video->queue.lock = &video->lock;
1262 video->queue.drv_priv = video;
1263 video->queue.buf_struct_size = sizeof(struct vsp1_video_buffer);
1264 video->queue.ops = &vsp1_video_queue_qops;
1265 video->queue.mem_ops = &vb2_dma_contig_memops;
ade48681 1266 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
26e0ca22
LP		 1267 ret = vb2_queue_init(&video->queue);
1268 if (ret < 0) {
1269 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1270 goto error;
1271 }
1272
1273 /* ... and register the video device. */
1274 video->video.queue = &video->queue;
1275 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1276 if (ret < 0) {
1277 dev_err(video->vsp1->dev, "failed to register video device\n");
1278 goto error;
1279 }
1280
1281 return 0;
1282
1283error:
1284 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1285 vsp1_video_cleanup(video);
1286 return ret;
1287}
1288
1289void vsp1_video_cleanup(struct vsp1_video *video)
1290{
1291 if (video_is_registered(&video->video))
1292 video_unregister_device(&video->video);
1293
1294 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1295 media_entity_cleanup(&video->video.entity);
1296}
Linux 6.x block layer and io_uring tree(s)