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[media] v4l: vsp1: Decouple pipeline end of frame processing from vsp1_video
[deliverable/linux.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 },
b915bd24
LP		 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 },
26e0ca22
LP		 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 */
162static 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
177static struct v4l2_subdev *
178vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
179{
180 struct media_pad *remote;
181
182 remote = media_entity_remote_pad(local);
3efdf62c 183 if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
26e0ca22
LP		 184 return NULL;
185
186 if (pad)
187 *pad = remote->index;
188
189 return media_entity_to_v4l2_subdev(remote->entity);
190}
191
192static 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
86960eec
LP		 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)
26e0ca22
LP		 210 return -EINVAL;
211
212 return 0;
213}
214
215static int __vsp1_video_try_format(struct vsp1_video *video,
216 struct v4l2_pix_format_mplane *pix,
217 const struct vsp1_format_info **fmtinfo)
218{
56bfef3e
LP		 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
26e0ca22
LP		 226 const struct vsp1_format_info *info;
227 unsigned int width = pix->width;
228 unsigned int height = pix->height;
229 unsigned int i;
230
56bfef3e
LP		 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
26e0ca22
LP		 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 */
df5c3e7c 267 for (i = 0; i < min(info->planes, 2U); ++i) {
26e0ca22
LP		 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
26e0ca22
LP		 296/* -----------------------------------------------------------------------------
297 * Pipeline Management
298 */
299
bdc2df62
LP		 300static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
301 struct vsp1_rwpf *input,
26e0ca22
LP		 302 struct vsp1_rwpf *output)
303{
304 struct vsp1_entity *entity;
54b5a749 305 struct media_entity_enum ent_enum;
26e0ca22 306 struct media_pad *pad;
54b5a749 307 int rval;
bdc2df62 308 bool bru_found = false;
26e0ca22 309
629bb6d4
LP		 310 input->location.left = 0;
311 input->location.top = 0;
312
54b5a749
SA		 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
26e0ca22
LP		 318 pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
319
320 while (1) {
54b5a749
SA		 321 if (pad == NULL) {
322 rval = -EPIPE;
323 goto out;
324 }
26e0ca22
LP		 325
326 /* We've reached a video node, that shouldn't have happened. */
54b5a749
SA		 327 if (!is_media_entity_v4l2_subdev(pad->entity)) {
328 rval = -EPIPE;
329 goto out;
330 }
26e0ca22 331
54b5a749
SA		 332 entity = to_vsp1_entity(
333 media_entity_to_v4l2_subdev(pad->entity));
26e0ca22 334
629bb6d4
LP		 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);
6418b4d6
LP		 340 struct v4l2_rect *rect =
341 &bru->inputs[pad->index].compose;
342
343 bru->inputs[pad->index].rpf = input;
629bb6d4
LP		 344
345 input->location.left = rect->left;
346 input->location.top = rect->top;
bdc2df62
LP		 347
348 bru_found = true;
629bb6d4
LP		 349 }
350
26e0ca22
LP		 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. */
54b5a749
SA		 356 if (media_entity_enum_test_and_set(&ent_enum,
357 &entity->subdev.entity)) {
358 rval = -EPIPE;
359 goto out;
360 }
26e0ca22
LP		 361
362 /* UDS can't be chained. */
363 if (entity->type == VSP1_ENTITY_UDS) {
54b5a749
SA		 364 if (pipe->uds) {
365 rval = -EPIPE;
366 goto out;
367 }
bdc2df62
LP		 368
369 pipe->uds = entity;
370 pipe->uds_input = bru_found ? pipe->bru
371 : &input->entity;
26e0ca22
LP		 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)
54b5a749 385 rval = -EPIPE;
26e0ca22 386
54b5a749
SA		 387out:
388 media_entity_enum_cleanup(&ent_enum);
389
390 return rval;
26e0ca22
LP		 391}
392
6418b4d6
LP		 393static 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;
6418b4d6
LP		 406 pipe->num_inputs = 0;
407 pipe->output = NULL;
408 pipe->bru = NULL;
409 pipe->lif = NULL;
bdc2df62 410 pipe->uds = NULL;
6418b4d6
LP		 411}
412
26e0ca22
LP		 413static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
414 struct vsp1_video *video)
415{
416 struct media_entity_graph graph;
417 struct media_entity *entity = &video->video.entity;
d10c9894 418 struct media_device *mdev = entity->graph_obj.mdev;
26e0ca22
LP		 419 unsigned int i;
420 int ret;
421
422 mutex_lock(&mdev->graph_mutex);
423
424 /* Walk the graph to locate the entities and video nodes. */
c1a5f1bc
SA		 425 ret = media_entity_graph_walk_init(&graph, mdev);
426 if (ret) {
427 mutex_unlock(&mdev->graph_mutex);
428 return ret;
429 }
430
26e0ca22
LP		 431 media_entity_graph_walk_start(&graph, entity);
432
433 while ((entity = media_entity_graph_walk_next(&graph))) {
434 struct v4l2_subdev *subdev;
435 struct vsp1_rwpf *rwpf;
436 struct vsp1_entity *e;
437
2f2db2f2 438 if (is_media_entity_v4l2_io(entity))
26e0ca22 439 continue;
26e0ca22
LP		 440
441 subdev = media_entity_to_v4l2_subdev(entity);
442 e = to_vsp1_entity(subdev);
443 list_add_tail(&e->list_pipe, &pipe->entities);
444
445 if (e->type == VSP1_ENTITY_RPF) {
446 rwpf = to_rwpf(subdev);
447 pipe->inputs[pipe->num_inputs++] = rwpf;
faf2644d 448 rwpf->video->pipe_index = pipe->num_inputs;
26e0ca22
LP		 449 } else if (e->type == VSP1_ENTITY_WPF) {
450 rwpf = to_rwpf(subdev);
451 pipe->output = to_rwpf(subdev);
faf2644d 452 rwpf->video->pipe_index = 0;
26e0ca22
LP		 453 } else if (e->type == VSP1_ENTITY_LIF) {
454 pipe->lif = e;
629bb6d4
LP		 455 } else if (e->type == VSP1_ENTITY_BRU) {
456 pipe->bru = e;
26e0ca22
LP		 457 }
458 }
459
460 mutex_unlock(&mdev->graph_mutex);
461
c1a5f1bc
SA		 462 media_entity_graph_walk_cleanup(&graph);
463
26e0ca22
LP		 464 /* We need one output and at least one input. */
465 if (pipe->num_inputs == 0 || !pipe->output) {
466 ret = -EPIPE;
467 goto error;
468 }
469
470 /* Follow links downstream for each input and make sure the graph
471 * contains no loop and that all branches end at the output WPF.
472 */
473 for (i = 0; i < pipe->num_inputs; ++i) {
bdc2df62 474 ret = vsp1_pipeline_validate_branch(pipe, pipe->inputs[i],
26e0ca22
LP		 475 pipe->output);
476 if (ret < 0)
477 goto error;
478 }
479
480 return 0;
481
482error:
6418b4d6 483 __vsp1_pipeline_cleanup(pipe);
26e0ca22
LP		 484 return ret;
485}
486
487static int vsp1_pipeline_init(struct vsp1_pipeline *pipe,
488 struct vsp1_video *video)
489{
490 int ret;
491
492 mutex_lock(&pipe->lock);
493
494 /* If we're the first user validate and initialize the pipeline. */
495 if (pipe->use_count == 0) {
496 ret = vsp1_pipeline_validate(pipe, video);
497 if (ret < 0)
498 goto done;
499 }
500
501 pipe->use_count++;
502 ret = 0;
503
504done:
505 mutex_unlock(&pipe->lock);
506 return ret;
507}
508
509static void vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
510{
511 mutex_lock(&pipe->lock);
512
513 /* If we're the last user clean up the pipeline. */
6418b4d6
LP		 514 if (--pipe->use_count == 0)
515 __vsp1_pipeline_cleanup(pipe);
26e0ca22
LP		 516
517 mutex_unlock(&pipe->lock);
518}
519
520static void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
521{
522 struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
523
524 vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index), VI6_CMD_STRCMD);
525 pipe->state = VSP1_PIPELINE_RUNNING;
526 pipe->buffers_ready = 0;
527}
528
41bdc3cf 529static bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)
1c991fee
LP		 530{
531 unsigned long flags;
532 bool stopped;
533
534 spin_lock_irqsave(&pipe->irqlock, flags);
1b4ca5aa 535 stopped = pipe->state == VSP1_PIPELINE_STOPPED;
1c991fee
LP		 536 spin_unlock_irqrestore(&pipe->irqlock, flags);
537
538 return stopped;
539}
540
26e0ca22
LP		 541static int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)
542{
543 struct vsp1_entity *entity;
544 unsigned long flags;
545 int ret;
546
547 spin_lock_irqsave(&pipe->irqlock, flags);
9b3e6e2a
LP		 548 if (pipe->state == VSP1_PIPELINE_RUNNING)
549 pipe->state = VSP1_PIPELINE_STOPPING;
26e0ca22
LP		 550 spin_unlock_irqrestore(&pipe->irqlock, flags);
551
1c991fee 552 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
26e0ca22
LP		 553 msecs_to_jiffies(500));
554 ret = ret == 0 ? -ETIMEDOUT : 0;
555
556 list_for_each_entry(entity, &pipe->entities, list_pipe) {
aaa48cbb 557 if (entity->route && entity->route->reg)
d9b45ed3 558 vsp1_write(entity->vsp1, entity->route->reg,
26e0ca22
LP		 559 VI6_DPR_NODE_UNUSED);
560
561 v4l2_subdev_call(&entity->subdev, video, s_stream, 0);
562 }
563
564 return ret;
565}
566
567static bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)
568{
569 unsigned int mask;
570
571 mask = ((1 << pipe->num_inputs) - 1) << 1;
572 if (!pipe->lif)
573 mask |= 1 << 0;
574
575 return pipe->buffers_ready == mask;
576}
577
578/*
579 * vsp1_video_complete_buffer - Complete the current buffer
580 * @video: the video node
581 *
582 * This function completes the current buffer by filling its sequence number,
583 * time stamp and payload size, and hands it back to the videobuf core.
584 *
3299ba5c
LP		 585 * When operating in DU output mode (deep pipeline to the DU through the LIF),
586 * the VSP1 needs to constantly supply frames to the display. In that case, if
587 * no other buffer is queued, reuse the one that has just been processed instead
588 * of handing it back to the videobuf core.
589 *
26e0ca22
LP		 590 * Return the next queued buffer or NULL if the queue is empty.
591 */
f7ebf3ca 592static struct vsp1_vb2_buffer *
26e0ca22
LP		 593vsp1_video_complete_buffer(struct vsp1_video *video)
594{
3299ba5c 595 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
f7ebf3ca
LP		 596 struct vsp1_vb2_buffer *next = NULL;
597 struct vsp1_vb2_buffer *done;
26e0ca22
LP		 598 unsigned long flags;
599 unsigned int i;
600
601 spin_lock_irqsave(&video->irqlock, flags);
602
603 if (list_empty(&video->irqqueue)) {
604 spin_unlock_irqrestore(&video->irqlock, flags);
605 return NULL;
606 }
607
608 done = list_first_entry(&video->irqqueue,
f7ebf3ca 609 struct vsp1_vb2_buffer, queue);
3299ba5c
LP		 610
611 /* In DU output mode reuse the buffer if the list is singular. */
612 if (pipe->lif && list_is_singular(&video->irqqueue)) {
613 spin_unlock_irqrestore(&video->irqlock, flags);
614 return done;
615 }
616
26e0ca22
LP		 617 list_del(&done->queue);
618
619 if (!list_empty(&video->irqqueue))
620 next = list_first_entry(&video->irqqueue,
f7ebf3ca 621 struct vsp1_vb2_buffer, queue);
26e0ca22
LP		 622
623 spin_unlock_irqrestore(&video->irqlock, flags);
624
2d700715 625 done->buf.sequence = video->sequence++;
d6dd645e 626 done->buf.vb2_buf.timestamp = ktime_get_ns();
2d700715 627 for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
b58faa95
LP		 628 vb2_set_plane_payload(&done->buf.vb2_buf, i,
629 done->mem.length[i]);
2d700715 630 vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
26e0ca22
LP		 631
632 return next;
633}
634
635static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
3f725b7e 636 struct vsp1_rwpf *rwpf)
26e0ca22 637{
3f725b7e 638 struct vsp1_video *video = rwpf->video;
f7ebf3ca 639 struct vsp1_vb2_buffer *buf;
26e0ca22
LP		 640 unsigned long flags;
641
642 buf = vsp1_video_complete_buffer(video);
643 if (buf == NULL)
644 return;
645
646 spin_lock_irqsave(&pipe->irqlock, flags);
647
b58faa95 648 video->rwpf->ops->set_memory(video->rwpf, &buf->mem);
26e0ca22
LP		 649 pipe->buffers_ready |= 1 << video->pipe_index;
650
651 spin_unlock_irqrestore(&pipe->irqlock, flags);
652}
653
3f725b7e
LP		 654static void vsp1_video_pipeline_frame_end(struct vsp1_pipeline *pipe)
655{
656 unsigned int i;
657
658 /* Complete buffers on all video nodes. */
659 for (i = 0; i < pipe->num_inputs; ++i)
660 vsp1_video_frame_end(pipe, pipe->inputs[i]);
661
662 if (!pipe->lif)
663 vsp1_video_frame_end(pipe, pipe->output);
664}
665
26e0ca22
LP		 666void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
667{
9b3e6e2a 668 enum vsp1_pipeline_state state;
26e0ca22 669 unsigned long flags;
26e0ca22
LP		 670
671 if (pipe == NULL)
672 return;
673
3f725b7e
LP		 674 /* Signal frame end to the pipeline handler. */
675 pipe->frame_end(pipe);
26e0ca22
LP		 676
677 spin_lock_irqsave(&pipe->irqlock, flags);
678
9b3e6e2a
LP		 679 state = pipe->state;
680 pipe->state = VSP1_PIPELINE_STOPPED;
681
26e0ca22
LP		 682 /* If a stop has been requested, mark the pipeline as stopped and
683 * return.
684 */
9b3e6e2a 685 if (state == VSP1_PIPELINE_STOPPING) {
26e0ca22
LP		 686 wake_up(&pipe->wq);
687 goto done;
688 }
689
690 /* Restart the pipeline if ready. */
691 if (vsp1_pipeline_ready(pipe))
692 vsp1_pipeline_run(pipe);
693
694done:
695 spin_unlock_irqrestore(&pipe->irqlock, flags);
696}
697
bdc2df62
LP		 698/*
699 * Propagate the alpha value through the pipeline.
700 *
701 * As the UDS has restricted scaling capabilities when the alpha component needs
702 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha
703 * value. The UDS then outputs a fixed alpha value which needs to be programmed
704 * from the input RPF alpha.
705 */
706void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
707 struct vsp1_entity *input,
708 unsigned int alpha)
709{
710 struct vsp1_entity *entity;
711 struct media_pad *pad;
712
713 pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
714
715 while (pad) {
3efdf62c 716 if (!is_media_entity_v4l2_subdev(pad->entity))
bdc2df62
LP		 717 break;
718
719 entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
720
721 /* The BRU background color has a fixed alpha value set to 255,
722 * the output alpha value is thus always equal to 255.
723 */
724 if (entity->type == VSP1_ENTITY_BRU)
725 alpha = 255;
726
727 if (entity->type == VSP1_ENTITY_UDS) {
728 struct vsp1_uds *uds = to_uds(&entity->subdev);
729
730 vsp1_uds_set_alpha(uds, alpha);
731 break;
732 }
733
734 pad = &entity->pads[entity->source_pad];
735 pad = media_entity_remote_pad(pad);
736 }
737}
738
139c9286
SF		 739void vsp1_pipelines_suspend(struct vsp1_device *vsp1)
740{
741 unsigned long flags;
742 unsigned int i;
743 int ret;
744
745 /* To avoid increasing the system suspend time needlessly, loop over the
746 * pipelines twice, first to set them all to the stopping state, and then
747 * to wait for the stop to complete.
748 */
749 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
750 struct vsp1_rwpf *wpf = vsp1->wpf[i];
751 struct vsp1_pipeline *pipe;
752
753 if (wpf == NULL)
754 continue;
755
756 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
757 if (pipe == NULL)
758 continue;
759
760 spin_lock_irqsave(&pipe->irqlock, flags);
761 if (pipe->state == VSP1_PIPELINE_RUNNING)
762 pipe->state = VSP1_PIPELINE_STOPPING;
763 spin_unlock_irqrestore(&pipe->irqlock, flags);
764 }
765
766 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
767 struct vsp1_rwpf *wpf = vsp1->wpf[i];
768 struct vsp1_pipeline *pipe;
769
770 if (wpf == NULL)
771 continue;
772
773 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
774 if (pipe == NULL)
775 continue;
776
1c991fee 777 ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),
139c9286
SF		 778 msecs_to_jiffies(500));
779 if (ret == 0)
780 dev_warn(vsp1->dev, "pipeline %u stop timeout\n",
781 wpf->entity.index);
782 }
783}
784
785void vsp1_pipelines_resume(struct vsp1_device *vsp1)
786{
787 unsigned int i;
788
789 /* Resume pipeline all running pipelines. */
790 for (i = 0; i < vsp1->pdata.wpf_count; ++i) {
791 struct vsp1_rwpf *wpf = vsp1->wpf[i];
792 struct vsp1_pipeline *pipe;
793
794 if (wpf == NULL)
795 continue;
796
797 pipe = to_vsp1_pipeline(&wpf->entity.subdev.entity);
798 if (pipe == NULL)
799 continue;
800
801 if (vsp1_pipeline_ready(pipe))
802 vsp1_pipeline_run(pipe);
803 }
804}
805
26e0ca22
LP		 806/* -----------------------------------------------------------------------------
807 * videobuf2 Queue Operations
808 */
809
810static int
df9ecb0c 811vsp1_video_queue_setup(struct vb2_queue *vq,
26e0ca22
LP		 812 unsigned int *nbuffers, unsigned int *nplanes,
813 unsigned int sizes[], void *alloc_ctxs[])
814{
815 struct vsp1_video *video = vb2_get_drv_priv(vq);
86960eec 816 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
26e0ca22
LP		 817 unsigned int i;
818
df9ecb0c
HV		 819 if (*nplanes) {
820 if (*nplanes != format->num_planes)
26e0ca22
LP		 821 return -EINVAL;
822
df9ecb0c
HV		 823 for (i = 0; i < *nplanes; i++) {
824 if (sizes[i] < format->plane_fmt[i].sizeimage)
825 return -EINVAL;
826 alloc_ctxs[i] = video->alloc_ctx;
827 }
828 return 0;
26e0ca22
LP		 829 }
830
831 *nplanes = format->num_planes;
832
833 for (i = 0; i < format->num_planes; ++i) {
834 sizes[i] = format->plane_fmt[i].sizeimage;
835 alloc_ctxs[i] = video->alloc_ctx;
836 }
837
838 return 0;
839}
840
841static int vsp1_video_buffer_prepare(struct vb2_buffer *vb)
842{
2d700715 843 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
26e0ca22 844 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
f7ebf3ca 845 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
86960eec 846 const struct v4l2_pix_format_mplane *format = &video->rwpf->format;
26e0ca22
LP		 847 unsigned int i;
848
849 if (vb->num_planes < format->num_planes)
850 return -EINVAL;
851
b58faa95
LP		 852 buf->mem.num_planes = vb->num_planes;
853
26e0ca22 854 for (i = 0; i < vb->num_planes; ++i) {
b58faa95
LP		 855 buf->mem.addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
856 buf->mem.length[i] = vb2_plane_size(vb, i);
26e0ca22 857
b58faa95 858 if (buf->mem.length[i] < format->plane_fmt[i].sizeimage)
26e0ca22
LP		 859 return -EINVAL;
860 }
861
862 return 0;
863}
864
865static void vsp1_video_buffer_queue(struct vb2_buffer *vb)
866{
2d700715 867 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
26e0ca22
LP		 868 struct vsp1_video *video = vb2_get_drv_priv(vb->vb2_queue);
869 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
f7ebf3ca 870 struct vsp1_vb2_buffer *buf = to_vsp1_vb2_buffer(vbuf);
26e0ca22
LP		 871 unsigned long flags;
872 bool empty;
873
874 spin_lock_irqsave(&video->irqlock, flags);
875 empty = list_empty(&video->irqqueue);
876 list_add_tail(&buf->queue, &video->irqqueue);
877 spin_unlock_irqrestore(&video->irqlock, flags);
878
879 if (!empty)
880 return;
881
882 spin_lock_irqsave(&pipe->irqlock, flags);
883
b58faa95 884 video->rwpf->ops->set_memory(video->rwpf, &buf->mem);
26e0ca22
LP		 885 pipe->buffers_ready |= 1 << video->pipe_index;
886
887 if (vb2_is_streaming(&video->queue) &&
888 vsp1_pipeline_ready(pipe))
889 vsp1_pipeline_run(pipe);
890
891 spin_unlock_irqrestore(&pipe->irqlock, flags);
892}
893
894static void vsp1_entity_route_setup(struct vsp1_entity *source)
895{
896 struct vsp1_entity *sink;
897
d9b45ed3 898 if (source->route->reg == 0)
26e0ca22
LP		 899 return;
900
901 sink = container_of(source->sink, struct vsp1_entity, subdev.entity);
d9b45ed3
LP		 902 vsp1_write(source->vsp1, source->route->reg,
903 sink->route->inputs[source->sink_pad]);
26e0ca22
LP		 904}
905
906static int vsp1_video_start_streaming(struct vb2_queue *vq, unsigned int count)
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_entity *entity;
911 unsigned long flags;
912 int ret;
913
914 mutex_lock(&pipe->lock);
2f2db2f2 915 if (pipe->stream_count == pipe->num_inputs) {
bdc2df62
LP		 916 if (pipe->uds) {
917 struct vsp1_uds *uds = to_uds(&pipe->uds->subdev);
918
919 /* If a BRU is present in the pipeline before the UDS,
920 * the alpha component doesn't need to be scaled as the
921 * BRU output alpha value is fixed to 255. Otherwise we
922 * need to scale the alpha component only when available
923 * at the input RPF.
924 */
925 if (pipe->uds_input->type == VSP1_ENTITY_BRU) {
926 uds->scale_alpha = false;
927 } else {
928 struct vsp1_rwpf *rpf =
929 to_rwpf(&pipe->uds_input->subdev);
930
86960eec 931 uds->scale_alpha = rpf->fmtinfo->alpha;
bdc2df62
LP		 932 }
933 }
934
26e0ca22
LP		 935 list_for_each_entry(entity, &pipe->entities, list_pipe) {
936 vsp1_entity_route_setup(entity);
937
938 ret = v4l2_subdev_call(&entity->subdev, video,
939 s_stream, 1);
940 if (ret < 0) {
941 mutex_unlock(&pipe->lock);
942 return ret;
943 }
944 }
945 }
946
947 pipe->stream_count++;
948 mutex_unlock(&pipe->lock);
949
950 spin_lock_irqsave(&pipe->irqlock, flags);
951 if (vsp1_pipeline_ready(pipe))
952 vsp1_pipeline_run(pipe);
953 spin_unlock_irqrestore(&pipe->irqlock, flags);
954
955 return 0;
956}
957
e37559b2 958static void vsp1_video_stop_streaming(struct vb2_queue *vq)
26e0ca22
LP		 959{
960 struct vsp1_video *video = vb2_get_drv_priv(vq);
961 struct vsp1_pipeline *pipe = to_vsp1_pipeline(&video->video.entity);
f7ebf3ca 962 struct vsp1_vb2_buffer *buffer;
26e0ca22
LP		 963 unsigned long flags;
964 int ret;
965
966 mutex_lock(&pipe->lock);
967 if (--pipe->stream_count == 0) {
968 /* Stop the pipeline. */
969 ret = vsp1_pipeline_stop(pipe);
970 if (ret == -ETIMEDOUT)
971 dev_err(video->vsp1->dev, "pipeline stop timeout\n");
972 }
973 mutex_unlock(&pipe->lock);
974
975 vsp1_pipeline_cleanup(pipe);
976 media_entity_pipeline_stop(&video->video.entity);
977
978 /* Remove all buffers from the IRQ queue. */
979 spin_lock_irqsave(&video->irqlock, flags);
9df04e9d 980 list_for_each_entry(buffer, &video->irqqueue, queue)
2d700715 981 vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR);
26e0ca22
LP		 982 INIT_LIST_HEAD(&video->irqqueue);
983 spin_unlock_irqrestore(&video->irqlock, flags);
26e0ca22
LP		 984}
985
986static struct vb2_ops vsp1_video_queue_qops = {
987 .queue_setup = vsp1_video_queue_setup,
988 .buf_prepare = vsp1_video_buffer_prepare,
989 .buf_queue = vsp1_video_buffer_queue,
990 .wait_prepare = vb2_ops_wait_prepare,
991 .wait_finish = vb2_ops_wait_finish,
992 .start_streaming = vsp1_video_start_streaming,
993 .stop_streaming = vsp1_video_stop_streaming,
994};
995
996/* -----------------------------------------------------------------------------
997 * V4L2 ioctls
998 */
999
1000static int
1001vsp1_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
1002{
1003 struct v4l2_fh *vfh = file->private_data;
1004 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1005
1006 cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
1007 | V4L2_CAP_VIDEO_CAPTURE_MPLANE
1008 | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
1009
1010 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1011 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE
1012 | V4L2_CAP_STREAMING;
1013 else
1014 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT_MPLANE
1015 | V4L2_CAP_STREAMING;
1016
1017 strlcpy(cap->driver, "vsp1", sizeof(cap->driver));
1018 strlcpy(cap->card, video->video.name, sizeof(cap->card));
1019 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1020 dev_name(video->vsp1->dev));
1021
1022 return 0;
1023}
1024
1025static int
1026vsp1_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
1027{
1028 struct v4l2_fh *vfh = file->private_data;
1029 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1030
1031 if (format->type != video->queue.type)
1032 return -EINVAL;
1033
1034 mutex_lock(&video->lock);
86960eec 1035 format->fmt.pix_mp = video->rwpf->format;
26e0ca22
LP		 1036 mutex_unlock(&video->lock);
1037
1038 return 0;
1039}
1040
1041static int
1042vsp1_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
1043{
1044 struct v4l2_fh *vfh = file->private_data;
1045 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1046
1047 if (format->type != video->queue.type)
1048 return -EINVAL;
1049
1050 return __vsp1_video_try_format(video, &format->fmt.pix_mp, NULL);
1051}
1052
1053static int
1054vsp1_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
1055{
1056 struct v4l2_fh *vfh = file->private_data;
1057 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1058 const struct vsp1_format_info *info;
1059 int ret;
1060
1061 if (format->type != video->queue.type)
1062 return -EINVAL;
1063
1064 ret = __vsp1_video_try_format(video, &format->fmt.pix_mp, &info);
1065 if (ret < 0)
1066 return ret;
1067
1068 mutex_lock(&video->lock);
1069
1070 if (vb2_is_busy(&video->queue)) {
1071 ret = -EBUSY;
1072 goto done;
1073 }
1074
86960eec
LP		 1075 video->rwpf->format = format->fmt.pix_mp;
1076 video->rwpf->fmtinfo = info;
26e0ca22
LP		 1077
1078done:
1079 mutex_unlock(&video->lock);
1080 return ret;
1081}
1082
1083static int
1084vsp1_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
1085{
1086 struct v4l2_fh *vfh = file->private_data;
1087 struct vsp1_video *video = to_vsp1_video(vfh->vdev);
1088 struct vsp1_pipeline *pipe;
1089 int ret;
1090
26e0ca22
LP		 1091 if (video->queue.owner && video->queue.owner != file->private_data)
1092 return -EBUSY;
1093
1094 video->sequence = 0;
1095
1096 /* Start streaming on the pipeline. No link touching an entity in the
1097 * pipeline can be activated or deactivated once streaming is started.
1098 *
1099 * Use the VSP1 pipeline object embedded in the first video object that
1100 * starts streaming.
1101 */
1102 pipe = video->video.entity.pipe
1103 ? to_vsp1_pipeline(&video->video.entity) : &video->pipe;
1104
1105 ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe);
1106 if (ret < 0)
1107 return ret;
1108
1109 /* Verify that the configured format matches the output of the connected
1110 * subdev.
1111 */
1112 ret = vsp1_video_verify_format(video);
1113 if (ret < 0)
1114 goto err_stop;
1115
1116 ret = vsp1_pipeline_init(pipe, video);
1117 if (ret < 0)
1118 goto err_stop;
1119
1120 /* Start the queue. */
1121 ret = vb2_streamon(&video->queue, type);
1122 if (ret < 0)
1123 goto err_cleanup;
1124
1125 return 0;
1126
1127err_cleanup:
1128 vsp1_pipeline_cleanup(pipe);
1129err_stop:
1130 media_entity_pipeline_stop(&video->video.entity);
1131 return ret;
1132}
1133
1134static const struct v4l2_ioctl_ops vsp1_video_ioctl_ops = {
1135 .vidioc_querycap = vsp1_video_querycap,
1136 .vidioc_g_fmt_vid_cap_mplane = vsp1_video_get_format,
1137 .vidioc_s_fmt_vid_cap_mplane = vsp1_video_set_format,
1138 .vidioc_try_fmt_vid_cap_mplane = vsp1_video_try_format,
1139 .vidioc_g_fmt_vid_out_mplane = vsp1_video_get_format,
1140 .vidioc_s_fmt_vid_out_mplane = vsp1_video_set_format,
1141 .vidioc_try_fmt_vid_out_mplane = vsp1_video_try_format,
1142 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1143 .vidioc_querybuf = vb2_ioctl_querybuf,
1144 .vidioc_qbuf = vb2_ioctl_qbuf,
1145 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1146 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1147 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1148 .vidioc_streamon = vsp1_video_streamon,
1149 .vidioc_streamoff = vb2_ioctl_streamoff,
1150};
1151
1152/* -----------------------------------------------------------------------------
1153 * V4L2 File Operations
1154 */
1155
1156static int vsp1_video_open(struct file *file)
1157{
1158 struct vsp1_video *video = video_drvdata(file);
1159 struct v4l2_fh *vfh;
1160 int ret = 0;
1161
1162 vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
1163 if (vfh == NULL)
1164 return -ENOMEM;
1165
1166 v4l2_fh_init(vfh, &video->video);
1167 v4l2_fh_add(vfh);
1168
1169 file->private_data = vfh;
1170
4c16d6a0
LP		 1171 ret = vsp1_device_get(video->vsp1);
1172 if (ret < 0) {
26e0ca22
LP		 1173 v4l2_fh_del(vfh);
1174 kfree(vfh);
1175 }
1176
1177 return ret;
1178}
1179
1180static int vsp1_video_release(struct file *file)
1181{
1182 struct vsp1_video *video = video_drvdata(file);
1183 struct v4l2_fh *vfh = file->private_data;
1184
1185 mutex_lock(&video->lock);
1186 if (video->queue.owner == vfh) {
1187 vb2_queue_release(&video->queue);
1188 video->queue.owner = NULL;
1189 }
1190 mutex_unlock(&video->lock);
1191
1192 vsp1_device_put(video->vsp1);
1193
1194 v4l2_fh_release(file);
1195
1196 file->private_data = NULL;
1197
1198 return 0;
1199}
1200
1201static struct v4l2_file_operations vsp1_video_fops = {
1202 .owner = THIS_MODULE,
1203 .unlocked_ioctl = video_ioctl2,
1204 .open = vsp1_video_open,
1205 .release = vsp1_video_release,
1206 .poll = vb2_fop_poll,
1207 .mmap = vb2_fop_mmap,
1208};
1209
1210/* -----------------------------------------------------------------------------
1211 * Initialization and Cleanup
1212 */
1213
9d40637a
LP		 1214struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1,
1215 struct vsp1_rwpf *rwpf)
26e0ca22 1216{
9d40637a 1217 struct vsp1_video *video;
26e0ca22
LP		 1218 const char *direction;
1219 int ret;
1220
9d40637a
LP		 1221 video = devm_kzalloc(vsp1->dev, sizeof(*video), GFP_KERNEL);
1222 if (!video)
1223 return ERR_PTR(-ENOMEM);
26e0ca22 1224
faf2644d 1225 rwpf->video = video;
9d40637a
LP		 1226
1227 video->vsp1 = vsp1;
1228 video->rwpf = rwpf;
1229
1230 if (rwpf->entity.type == VSP1_ENTITY_RPF) {
26e0ca22 1231 direction = "input";
9d40637a 1232 video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
26e0ca22
LP		 1233 video->pad.flags = MEDIA_PAD_FL_SOURCE;
1234 video->video.vfl_dir = VFL_DIR_TX;
9d40637a
LP		 1235 } else {
1236 direction = "output";
1237 video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1238 video->pad.flags = MEDIA_PAD_FL_SINK;
1239 video->video.vfl_dir = VFL_DIR_RX;
26e0ca22
LP		 1240 }
1241
26e0ca22
LP		 1242 mutex_init(&video->lock);
1243 spin_lock_init(&video->irqlock);
1244 INIT_LIST_HEAD(&video->irqqueue);
1245
1246 mutex_init(&video->pipe.lock);
1247 spin_lock_init(&video->pipe.irqlock);
1248 INIT_LIST_HEAD(&video->pipe.entities);
1249 init_waitqueue_head(&video->pipe.wq);
1250 video->pipe.state = VSP1_PIPELINE_STOPPED;
3f725b7e 1251 video->pipe.frame_end = vsp1_video_pipeline_frame_end;
26e0ca22
LP		 1252
1253 /* Initialize the media entity... */
ab22e77c 1254 ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
26e0ca22 1255 if (ret < 0)
9d40637a 1256 return ERR_PTR(ret);
26e0ca22
LP		 1257
1258 /* ... and the format ... */
86960eec
LP		 1259 rwpf->fmtinfo = vsp1_get_format_info(VSP1_VIDEO_DEF_FORMAT);
1260 rwpf->format.pixelformat = rwpf->fmtinfo->fourcc;
1261 rwpf->format.colorspace = V4L2_COLORSPACE_SRGB;
1262 rwpf->format.field = V4L2_FIELD_NONE;
1263 rwpf->format.width = VSP1_VIDEO_DEF_WIDTH;
1264 rwpf->format.height = VSP1_VIDEO_DEF_HEIGHT;
1265 rwpf->format.num_planes = 1;
1266 rwpf->format.plane_fmt[0].bytesperline =
1267 rwpf->format.width * rwpf->fmtinfo->bpp[0] / 8;
1268 rwpf->format.plane_fmt[0].sizeimage =
1269 rwpf->format.plane_fmt[0].bytesperline * rwpf->format.height;
26e0ca22
LP		 1270
1271 /* ... and the video node... */
1272 video->video.v4l2_dev = &video->vsp1->v4l2_dev;
1273 video->video.fops = &vsp1_video_fops;
1274 snprintf(video->video.name, sizeof(video->video.name), "%s %s",
8b4a0563 1275 rwpf->entity.subdev.name, direction);
26e0ca22
LP		 1276 video->video.vfl_type = VFL_TYPE_GRABBER;
1277 video->video.release = video_device_release_empty;
1278 video->video.ioctl_ops = &vsp1_video_ioctl_ops;
1279
1280 video_set_drvdata(&video->video, video);
1281
1282 /* ... and the buffers queue... */
1283 video->alloc_ctx = vb2_dma_contig_init_ctx(video->vsp1->dev);
b317828b
WY		 1284 if (IS_ERR(video->alloc_ctx)) {
1285 ret = PTR_ERR(video->alloc_ctx);
26e0ca22 1286 goto error;
b317828b 1287 }
26e0ca22
LP		 1288
1289 video->queue.type = video->type;
1290 video->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1291 video->queue.lock = &video->lock;
1292 video->queue.drv_priv = video;
f7ebf3ca 1293 video->queue.buf_struct_size = sizeof(struct vsp1_vb2_buffer);
26e0ca22
LP		 1294 video->queue.ops = &vsp1_video_queue_qops;
1295 video->queue.mem_ops = &vb2_dma_contig_memops;
ade48681 1296 video->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
26e0ca22
LP		 1297 ret = vb2_queue_init(&video->queue);
1298 if (ret < 0) {
1299 dev_err(video->vsp1->dev, "failed to initialize vb2 queue\n");
1300 goto error;
1301 }
1302
1303 /* ... and register the video device. */
1304 video->video.queue = &video->queue;
1305 ret = video_register_device(&video->video, VFL_TYPE_GRABBER, -1);
1306 if (ret < 0) {
1307 dev_err(video->vsp1->dev, "failed to register video device\n");
1308 goto error;
1309 }
1310
9d40637a 1311 return video;
26e0ca22
LP		 1312
1313error:
1314 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1315 vsp1_video_cleanup(video);
9d40637a 1316 return ERR_PTR(ret);
26e0ca22
LP		 1317}
1318
1319void vsp1_video_cleanup(struct vsp1_video *video)
1320{
1321 if (video_is_registered(&video->video))
1322 video_unregister_device(&video->video);
1323
1324 vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
1325 media_entity_cleanup(&video->video.entity);
1326}
Linux kernel - Deliverables
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