1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Contains the driver implementation for the V4L2 stateless interface.
4 */
5
6#include <linux/debugfs.h>
7#include <linux/font.h>
8#include <media/v4l2-event.h>
9#include <media/v4l2-ioctl.h>
10#include <media/videobuf2-vmalloc.h>
11#include <media/videobuf2-v4l2.h>
12
13#include "visl-video.h"
14
15#include "visl.h"
16#include "visl-debugfs.h"
17
18#define MIN_CODED_SZ (1024U * 256U)
19
20static void visl_set_current_codec(struct visl_ctx *ctx)
21{
22 u32 fourcc = ctx->coded_fmt.fmt.pix_mp.pixelformat;
23
24 switch (fourcc) {
25 case V4L2_PIX_FMT_FWHT_STATELESS:
26 ctx->current_codec = VISL_CODEC_FWHT;
27 break;
28 case V4L2_PIX_FMT_MPEG2_SLICE:
29 ctx->current_codec = VISL_CODEC_MPEG2;
30 break;
31 case V4L2_PIX_FMT_VP8_FRAME:
32 ctx->current_codec = VISL_CODEC_VP8;
33 break;
34 case V4L2_PIX_FMT_VP9_FRAME:
35 ctx->current_codec = VISL_CODEC_VP9;
36 break;
37 case V4L2_PIX_FMT_H264_SLICE:
38 ctx->current_codec = VISL_CODEC_H264;
39 break;
40 case V4L2_PIX_FMT_HEVC_SLICE:
41 ctx->current_codec = VISL_CODEC_HEVC;
42 break;
43 case V4L2_PIX_FMT_AV1_FRAME:
44 ctx->current_codec = VISL_CODEC_AV1;
45 break;
46 default:
47 dprintk(ctx->dev, "Warning: unsupported fourcc: %d\n", fourcc);
48 ctx->current_codec = VISL_CODEC_NONE;
49 break;
50 }
51}
52
53static void visl_print_fmt(struct visl_ctx *ctx, const struct v4l2_format *f)
54{
55 const struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
56 u32 i;
57
58 dprintk(ctx->dev, "width: %d\n", pix_mp->width);
59 dprintk(ctx->dev, "height: %d\n", pix_mp->height);
60 dprintk(ctx->dev, "pixelformat: %c%c%c%c\n",
61 pix_mp->pixelformat,
62 (pix_mp->pixelformat >> 8) & 0xff,
63 (pix_mp->pixelformat >> 16) & 0xff,
64 (pix_mp->pixelformat >> 24) & 0xff);
65
66 dprintk(ctx->dev, "field: %d\n", pix_mp->field);
67 dprintk(ctx->dev, "colorspace: %d\n", pix_mp->colorspace);
68 dprintk(ctx->dev, "num_planes: %d\n", pix_mp->num_planes);
69 dprintk(ctx->dev, "flags: %d\n", pix_mp->flags);
70 dprintk(ctx->dev, "quantization: %d\n", pix_mp->quantization);
71 dprintk(ctx->dev, "xfer_func: %d\n", pix_mp->xfer_func);
72
73 for (i = 0; i < pix_mp->num_planes; i++) {
74 dprintk(ctx->dev,
75 "plane[%d]: sizeimage: %d\n", i, pix_mp->plane_fmt[i].sizeimage);
76 dprintk(ctx->dev,
77 "plane[%d]: bytesperline: %d\n", i, pix_mp->plane_fmt[i].bytesperline);
78 }
79}
80
81static int visl_tpg_init(struct visl_ctx *ctx)
82{
83 const struct font_desc *font;
84 const char *font_name = "VGA8x16";
85 int ret;
86 u32 width = ctx->decoded_fmt.fmt.pix_mp.width;
87 u32 height = ctx->decoded_fmt.fmt.pix_mp.height;
88 struct v4l2_pix_format_mplane *f = &ctx->decoded_fmt.fmt.pix_mp;
89
90 tpg_free(tpg: &ctx->tpg);
91
92 font = find_font(name: font_name);
93 if (font) {
94 tpg_init(tpg: &ctx->tpg, w: width, h: height);
95
96 ret = tpg_alloc(tpg: &ctx->tpg, max_w: width);
97 if (ret)
98 goto err_alloc;
99
100 tpg_set_font(f: font->data);
101 ret = tpg_s_fourcc(tpg: &ctx->tpg,
102 fourcc: f->pixelformat);
103
104 if (!ret)
105 goto err_fourcc;
106
107 tpg_reset_source(tpg: &ctx->tpg, width, height, field: f->field);
108
109 tpg_s_pattern(tpg: &ctx->tpg, pattern: TPG_PAT_75_COLORBAR);
110
111 tpg_s_field(tpg: &ctx->tpg, field: f->field, alternate: false);
112 tpg_s_colorspace(tpg: &ctx->tpg, colorspace: f->colorspace);
113 tpg_s_ycbcr_enc(tpg: &ctx->tpg, ycbcr_enc: f->ycbcr_enc);
114 tpg_s_quantization(tpg: &ctx->tpg, quantization: f->quantization);
115 tpg_s_xfer_func(tpg: &ctx->tpg, xfer_func: f->xfer_func);
116 } else {
117 v4l2_err(&ctx->dev->v4l2_dev,
118 "Font %s not found\n", font_name);
119
120 return -EINVAL;
121 }
122
123 dprintk(ctx->dev, "Initialized the V4L2 test pattern generator, w=%d, h=%d, max_w=%d\n",
124 width, height, width);
125
126 return 0;
127err_alloc:
128 return ret;
129err_fourcc:
130 tpg_free(tpg: &ctx->tpg);
131 return ret;
132}
133
134static const u32 visl_decoded_fmts[] = {
135 V4L2_PIX_FMT_NV12,
136 V4L2_PIX_FMT_YUV420,
137};
138
139const struct visl_coded_format_desc visl_coded_fmts[] = {
140 {
141 .pixelformat = V4L2_PIX_FMT_FWHT_STATELESS,
142 .frmsize = {
143 .min_width = 640,
144 .max_width = 4096,
145 .step_width = 1,
146 .min_height = 360,
147 .max_height = 2160,
148 .step_height = 1,
149 },
150 .ctrls = &visl_fwht_ctrls,
151 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
152 .decoded_fmts = visl_decoded_fmts,
153 },
154 {
155 .pixelformat = V4L2_PIX_FMT_MPEG2_SLICE,
156 .frmsize = {
157 .min_width = 16,
158 .max_width = 1920,
159 .step_width = 1,
160 .min_height = 16,
161 .max_height = 1152,
162 .step_height = 1,
163 },
164 .ctrls = &visl_mpeg2_ctrls,
165 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
166 .decoded_fmts = visl_decoded_fmts,
167 },
168 {
169 .pixelformat = V4L2_PIX_FMT_VP8_FRAME,
170 .frmsize = {
171 .min_width = 64,
172 .max_width = 16383,
173 .step_width = 1,
174 .min_height = 64,
175 .max_height = 16383,
176 .step_height = 1,
177 },
178 .ctrls = &visl_vp8_ctrls,
179 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
180 .decoded_fmts = visl_decoded_fmts,
181 },
182 {
183 .pixelformat = V4L2_PIX_FMT_VP9_FRAME,
184 .frmsize = {
185 .min_width = 64,
186 .max_width = 8192,
187 .step_width = 1,
188 .min_height = 64,
189 .max_height = 4352,
190 .step_height = 1,
191 },
192 .ctrls = &visl_vp9_ctrls,
193 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
194 .decoded_fmts = visl_decoded_fmts,
195 },
196 {
197 .pixelformat = V4L2_PIX_FMT_H264_SLICE,
198 .frmsize = {
199 .min_width = 64,
200 .max_width = 4096,
201 .step_width = 1,
202 .min_height = 64,
203 .max_height = 2304,
204 .step_height = 1,
205 },
206 .ctrls = &visl_h264_ctrls,
207 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
208 .decoded_fmts = visl_decoded_fmts,
209 },
210 {
211 .pixelformat = V4L2_PIX_FMT_HEVC_SLICE,
212 .frmsize = {
213 .min_width = 64,
214 .max_width = 4096,
215 .step_width = 1,
216 .min_height = 64,
217 .max_height = 2304,
218 .step_height = 1,
219 },
220 .ctrls = &visl_hevc_ctrls,
221 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
222 .decoded_fmts = visl_decoded_fmts,
223 },
224 {
225 .pixelformat = V4L2_PIX_FMT_AV1_FRAME,
226 .frmsize = {
227 .min_width = 64,
228 .max_width = 4096,
229 .step_width = 1,
230 .min_height = 64,
231 .max_height = 2304,
232 .step_height = 1,
233 },
234 .ctrls = &visl_av1_ctrls,
235 .num_decoded_fmts = ARRAY_SIZE(visl_decoded_fmts),
236 .decoded_fmts = visl_decoded_fmts,
237 },
238
239};
240
241const size_t num_coded_fmts = ARRAY_SIZE(visl_coded_fmts);
242
243static const struct visl_coded_format_desc*
244visl_find_coded_fmt_desc(u32 fourcc)
245{
246 unsigned int i;
247
248 for (i = 0; i < ARRAY_SIZE(visl_coded_fmts); i++) {
249 if (visl_coded_fmts[i].pixelformat == fourcc)
250 return &visl_coded_fmts[i];
251 }
252
253 return NULL;
254}
255
256static void visl_init_fmt(struct v4l2_format *f, u32 fourcc)
257{ memset(f, 0, sizeof(*f));
258 f->fmt.pix_mp.pixelformat = fourcc;
259 f->fmt.pix_mp.field = V4L2_FIELD_NONE;
260 f->fmt.pix_mp.colorspace = V4L2_COLORSPACE_REC709;
261 f->fmt.pix_mp.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
262 f->fmt.pix_mp.quantization = V4L2_QUANTIZATION_DEFAULT;
263 f->fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_DEFAULT;
264}
265
266static void visl_reset_coded_fmt(struct visl_ctx *ctx)
267{
268 struct v4l2_format *f = &ctx->coded_fmt;
269 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
270
271 ctx->coded_format_desc = &visl_coded_fmts[0];
272 visl_init_fmt(f, fourcc: ctx->coded_format_desc->pixelformat);
273
274 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
275 f->fmt.pix_mp.width = ctx->coded_format_desc->frmsize.min_width;
276 f->fmt.pix_mp.height = ctx->coded_format_desc->frmsize.min_height;
277
278 pix_mp->num_planes = 1;
279 pix_mp->plane_fmt[0].sizeimage = pix_mp->width * pix_mp->height * 8;
280
281 dprintk(ctx->dev, "OUTPUT format was set to:\n");
282 visl_print_fmt(ctx, f: &ctx->coded_fmt);
283
284 visl_set_current_codec(ctx);
285}
286
287static int visl_reset_decoded_fmt(struct visl_ctx *ctx)
288{
289 struct v4l2_format *f = &ctx->decoded_fmt;
290 u32 decoded_fmt = ctx->coded_format_desc[0].decoded_fmts[0];
291
292 visl_init_fmt(f, fourcc: decoded_fmt);
293
294 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
295
296 v4l2_fill_pixfmt_mp(pixfmt: &f->fmt.pix_mp,
297 pixelformat: ctx->coded_format_desc->decoded_fmts[0],
298 width: ctx->coded_fmt.fmt.pix_mp.width,
299 height: ctx->coded_fmt.fmt.pix_mp.height);
300
301 dprintk(ctx->dev, "CAPTURE format was set to:\n");
302 visl_print_fmt(ctx, f: &ctx->decoded_fmt);
303
304 return visl_tpg_init(ctx);
305}
306
307int visl_set_default_format(struct visl_ctx *ctx)
308{
309 visl_reset_coded_fmt(ctx);
310 return visl_reset_decoded_fmt(ctx);
311}
312
313static struct visl_q_data *get_q_data(struct visl_ctx *ctx,
314 enum v4l2_buf_type type)
315{
316 switch (type) {
317 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
318 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
319 return &ctx->q_data[V4L2_M2M_SRC];
320 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
321 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
322 return &ctx->q_data[V4L2_M2M_DST];
323 default:
324 break;
325 }
326 return NULL;
327}
328
329static int visl_querycap(struct file *file, void *priv,
330 struct v4l2_capability *cap)
331{
332 strscpy(cap->driver, VISL_NAME, sizeof(cap->driver));
333 strscpy(cap->card, VISL_NAME, sizeof(cap->card));
334 snprintf(buf: cap->bus_info, size: sizeof(cap->bus_info),
335 fmt: "platform:%s", VISL_NAME);
336
337 return 0;
338}
339
340static int visl_enum_fmt_vid_cap(struct file *file, void *priv,
341 struct v4l2_fmtdesc *f)
342{
343 struct visl_ctx *ctx = visl_file_to_ctx(file);
344
345 if (f->index >= ctx->coded_format_desc->num_decoded_fmts)
346 return -EINVAL;
347
348 f->pixelformat = ctx->coded_format_desc->decoded_fmts[f->index];
349 return 0;
350}
351
352static int visl_enum_fmt_vid_out(struct file *file, void *priv,
353 struct v4l2_fmtdesc *f)
354{
355 if (f->index >= ARRAY_SIZE(visl_coded_fmts))
356 return -EINVAL;
357
358 f->pixelformat = visl_coded_fmts[f->index].pixelformat;
359 return 0;
360}
361
362static int visl_g_fmt_vid_cap(struct file *file, void *priv,
363 struct v4l2_format *f)
364{
365 struct visl_ctx *ctx = visl_file_to_ctx(file);
366 *f = ctx->decoded_fmt;
367
368 return 0;
369}
370
371static int visl_g_fmt_vid_out(struct file *file, void *priv,
372 struct v4l2_format *f)
373{
374 struct visl_ctx *ctx = visl_file_to_ctx(file);
375
376 *f = ctx->coded_fmt;
377 return 0;
378}
379
380static int visl_try_fmt_vid_cap(struct file *file, void *priv,
381 struct v4l2_format *f)
382{
383 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
384 struct visl_ctx *ctx = visl_file_to_ctx(file);
385 const struct visl_coded_format_desc *coded_desc;
386 unsigned int i;
387
388 coded_desc = ctx->coded_format_desc;
389
390 for (i = 0; i < coded_desc->num_decoded_fmts; i++) {
391 if (coded_desc->decoded_fmts[i] == pix_mp->pixelformat)
392 break;
393 }
394
395 if (i == coded_desc->num_decoded_fmts)
396 pix_mp->pixelformat = coded_desc->decoded_fmts[0];
397
398 v4l2_apply_frmsize_constraints(width: &pix_mp->width,
399 height: &pix_mp->height,
400 frmsize: &coded_desc->frmsize);
401
402 v4l2_fill_pixfmt_mp(pixfmt: pix_mp, pixelformat: pix_mp->pixelformat,
403 width: pix_mp->width, height: pix_mp->height);
404
405 pix_mp->field = V4L2_FIELD_NONE;
406
407 return 0;
408}
409
410static int visl_try_fmt_vid_out(struct file *file, void *priv,
411 struct v4l2_format *f)
412{
413 struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
414 const struct visl_coded_format_desc *coded_desc;
415
416 coded_desc = visl_find_coded_fmt_desc(fourcc: pix_mp->pixelformat);
417 if (!coded_desc) {
418 pix_mp->pixelformat = visl_coded_fmts[0].pixelformat;
419 coded_desc = &visl_coded_fmts[0];
420 }
421
422 v4l2_apply_frmsize_constraints(width: &pix_mp->width,
423 height: &pix_mp->height,
424 frmsize: &coded_desc->frmsize);
425
426 pix_mp->field = V4L2_FIELD_NONE;
427 pix_mp->num_planes = 1;
428
429 if (pix_mp->plane_fmt[0].sizeimage == 0)
430 pix_mp->plane_fmt[0].sizeimage = max(MIN_CODED_SZ,
431 pix_mp->width * pix_mp->height * 3);
432
433 return 0;
434}
435
436static int visl_s_fmt_vid_out(struct file *file, void *priv,
437 struct v4l2_format *f)
438{
439 struct visl_ctx *ctx = visl_file_to_ctx(file);
440 struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
441 const struct visl_coded_format_desc *desc;
442 struct vb2_queue *peer_vq;
443 int ret;
444
445 peer_vq = v4l2_m2m_get_vq(m2m_ctx, type: V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
446 if (vb2_is_busy(q: peer_vq))
447 return -EBUSY;
448
449 dprintk(ctx->dev, "Trying to set the OUTPUT format to:\n");
450 visl_print_fmt(ctx, f);
451
452 ret = visl_try_fmt_vid_out(file, priv, f);
453 if (ret)
454 return ret;
455
456 desc = visl_find_coded_fmt_desc(fourcc: f->fmt.pix_mp.pixelformat);
457 ctx->coded_format_desc = desc;
458 ctx->coded_fmt = *f;
459
460 ret = visl_reset_decoded_fmt(ctx);
461 if (ret)
462 return ret;
463
464 ctx->decoded_fmt.fmt.pix_mp.colorspace = f->fmt.pix_mp.colorspace;
465 ctx->decoded_fmt.fmt.pix_mp.xfer_func = f->fmt.pix_mp.xfer_func;
466 ctx->decoded_fmt.fmt.pix_mp.ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
467 ctx->decoded_fmt.fmt.pix_mp.quantization = f->fmt.pix_mp.quantization;
468
469 dprintk(ctx->dev, "OUTPUT format was set to:\n");
470 visl_print_fmt(ctx, f: &ctx->coded_fmt);
471
472 visl_set_current_codec(ctx);
473 return 0;
474}
475
476static int visl_s_fmt_vid_cap(struct file *file, void *priv,
477 struct v4l2_format *f)
478{
479 struct visl_ctx *ctx = visl_file_to_ctx(file);
480 int ret;
481
482 dprintk(ctx->dev, "Trying to set the CAPTURE format to:\n");
483 visl_print_fmt(ctx, f);
484
485 ret = visl_try_fmt_vid_cap(file, priv, f);
486 if (ret)
487 return ret;
488
489 ctx->decoded_fmt = *f;
490
491 dprintk(ctx->dev, "CAPTURE format was set to:\n");
492 visl_print_fmt(ctx, f: &ctx->decoded_fmt);
493
494 visl_tpg_init(ctx);
495 return 0;
496}
497
498static int visl_enum_framesizes(struct file *file, void *priv,
499 struct v4l2_frmsizeenum *fsize)
500{
501 const struct visl_coded_format_desc *fmt;
502 struct visl_ctx *ctx = visl_file_to_ctx(file);
503
504 if (fsize->index != 0)
505 return -EINVAL;
506
507 fmt = visl_find_coded_fmt_desc(fourcc: fsize->pixel_format);
508 if (!fmt) {
509 dprintk(ctx->dev,
510 "Unsupported format for the OUTPUT queue: %d\n",
511 fsize->pixel_format);
512
513 return -EINVAL;
514 }
515
516 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
517 fsize->stepwise = fmt->frmsize;
518 return 0;
519}
520
521const struct v4l2_ioctl_ops visl_ioctl_ops = {
522 .vidioc_querycap = visl_querycap,
523 .vidioc_enum_framesizes = visl_enum_framesizes,
524
525 .vidioc_enum_fmt_vid_cap = visl_enum_fmt_vid_cap,
526 .vidioc_g_fmt_vid_cap_mplane = visl_g_fmt_vid_cap,
527 .vidioc_try_fmt_vid_cap_mplane = visl_try_fmt_vid_cap,
528 .vidioc_s_fmt_vid_cap_mplane = visl_s_fmt_vid_cap,
529
530 .vidioc_enum_fmt_vid_out = visl_enum_fmt_vid_out,
531 .vidioc_g_fmt_vid_out_mplane = visl_g_fmt_vid_out,
532 .vidioc_try_fmt_vid_out_mplane = visl_try_fmt_vid_out,
533 .vidioc_s_fmt_vid_out_mplane = visl_s_fmt_vid_out,
534
535 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
536 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
537 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
538 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
539 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
540 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
541 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
542
543 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
544 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
545
546 .vidioc_decoder_cmd = v4l2_m2m_ioctl_stateless_decoder_cmd,
547 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_stateless_try_decoder_cmd,
548
549 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
550 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
551};
552
553static int visl_queue_setup(struct vb2_queue *vq,
554 unsigned int *nbuffers,
555 unsigned int *num_planes,
556 unsigned int sizes[],
557 struct device *alloc_devs[])
558{
559 struct visl_ctx *ctx = vb2_get_drv_priv(q: vq);
560 struct v4l2_format *f;
561 u32 i;
562 char *qname;
563
564 if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
565 f = &ctx->coded_fmt;
566 qname = "Output";
567 } else {
568 f = &ctx->decoded_fmt;
569 qname = "Capture";
570 }
571
572 if (*num_planes) {
573 if (*num_planes != f->fmt.pix_mp.num_planes)
574 return -EINVAL;
575
576 for (i = 0; i < f->fmt.pix_mp.num_planes; i++) {
577 if (sizes[i] < f->fmt.pix_mp.plane_fmt[i].sizeimage)
578 return -EINVAL;
579 }
580 } else {
581 *num_planes = f->fmt.pix_mp.num_planes;
582 for (i = 0; i < f->fmt.pix_mp.num_planes; i++)
583 sizes[i] = f->fmt.pix_mp.plane_fmt[i].sizeimage;
584 }
585
586 dprintk(ctx->dev, "%s: %d buffer(s) requested, num_planes=%d.\n",
587 qname, *nbuffers, *num_planes);
588
589 for (i = 0; i < f->fmt.pix_mp.num_planes; i++)
590 dprintk(ctx->dev, "plane[%d].sizeimage=%d\n",
591 i, f->fmt.pix_mp.plane_fmt[i].sizeimage);
592
593 return 0;
594}
595
596static void visl_queue_cleanup(struct vb2_queue *vq, u32 state)
597{
598 struct visl_ctx *ctx = vb2_get_drv_priv(q: vq);
599 struct vb2_v4l2_buffer *vbuf;
600
601 dprintk(ctx->dev, "Cleaning up queues\n");
602 for (;;) {
603 if (V4L2_TYPE_IS_OUTPUT(vq->type))
604 vbuf = v4l2_m2m_src_buf_remove(m2m_ctx: ctx->fh.m2m_ctx);
605 else
606 vbuf = v4l2_m2m_dst_buf_remove(m2m_ctx: ctx->fh.m2m_ctx);
607
608 if (!vbuf)
609 break;
610
611 v4l2_ctrl_request_complete(req: vbuf->vb2_buf.req_obj.req,
612 parent: &ctx->hdl);
613 dprintk(ctx->dev, "Marked request %p as complete\n",
614 vbuf->vb2_buf.req_obj.req);
615
616 v4l2_m2m_buf_done(buf: vbuf, state);
617 dprintk(ctx->dev,
618 "Marked buffer %llu as done, state is %d\n",
619 vbuf->vb2_buf.timestamp,
620 state);
621 }
622}
623
624static int visl_buf_out_validate(struct vb2_buffer *vb)
625{
626 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
627
628 vbuf->field = V4L2_FIELD_NONE;
629 return 0;
630}
631
632static int visl_buf_prepare(struct vb2_buffer *vb)
633{
634 struct vb2_queue *vq = vb->vb2_queue;
635 struct visl_ctx *ctx = vb2_get_drv_priv(q: vq);
636 u32 plane_sz = vb2_plane_size(vb, plane_no: 0);
637 struct v4l2_pix_format *pix_fmt;
638
639 if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
640 pix_fmt = &ctx->coded_fmt.fmt.pix;
641 } else {
642 pix_fmt = &ctx->decoded_fmt.fmt.pix;
643 vb2_set_plane_payload(vb, plane_no: 0, size: pix_fmt->sizeimage);
644 }
645
646 if (plane_sz < pix_fmt->sizeimage) {
647 v4l2_err(&ctx->dev->v4l2_dev, "plane[0] size is %d, sizeimage is %d\n",
648 plane_sz, pix_fmt->sizeimage);
649 return -EINVAL;
650 }
651
652 return 0;
653}
654
655static int visl_start_streaming(struct vb2_queue *vq, unsigned int count)
656{
657 struct visl_ctx *ctx = vb2_get_drv_priv(q: vq);
658 struct visl_q_data *q_data = get_q_data(ctx, type: vq->type);
659 int rc = 0;
660
661 if (!q_data) {
662 rc = -EINVAL;
663 goto err;
664 }
665
666 q_data->sequence = 0;
667
668 if (V4L2_TYPE_IS_CAPTURE(vq->type)) {
669 ctx->capture_streamon_jiffies = get_jiffies_64();
670 return 0;
671 }
672
673 if (WARN_ON(!ctx->coded_format_desc)) {
674 rc = -EINVAL;
675 goto err;
676 }
677
678 return 0;
679
680err:
681 visl_queue_cleanup(vq, state: VB2_BUF_STATE_QUEUED);
682 return rc;
683}
684
685static void visl_stop_streaming(struct vb2_queue *vq)
686{
687 struct visl_ctx *ctx = vb2_get_drv_priv(q: vq);
688
689 dprintk(ctx->dev, "Stop streaming\n");
690 visl_queue_cleanup(vq, state: VB2_BUF_STATE_ERROR);
691
692 if (!keep_bitstream_buffers)
693 visl_debugfs_clear_bitstream(dev: ctx->dev);
694}
695
696static void visl_buf_queue(struct vb2_buffer *vb)
697{
698 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
699 struct visl_ctx *ctx = vb2_get_drv_priv(q: vb->vb2_queue);
700
701 v4l2_m2m_buf_queue(m2m_ctx: ctx->fh.m2m_ctx, vbuf);
702}
703
704static void visl_buf_request_complete(struct vb2_buffer *vb)
705{
706 struct visl_ctx *ctx = vb2_get_drv_priv(q: vb->vb2_queue);
707
708 v4l2_ctrl_request_complete(req: vb->req_obj.req, parent: &ctx->hdl);
709}
710
711static const struct vb2_ops visl_qops = {
712 .queue_setup = visl_queue_setup,
713 .buf_out_validate = visl_buf_out_validate,
714 .buf_prepare = visl_buf_prepare,
715 .buf_queue = visl_buf_queue,
716 .start_streaming = visl_start_streaming,
717 .stop_streaming = visl_stop_streaming,
718 .wait_prepare = vb2_ops_wait_prepare,
719 .wait_finish = vb2_ops_wait_finish,
720 .buf_request_complete = visl_buf_request_complete,
721};
722
723int visl_queue_init(void *priv, struct vb2_queue *src_vq,
724 struct vb2_queue *dst_vq)
725{
726 struct visl_ctx *ctx = priv;
727 int ret;
728
729 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
730 src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
731 src_vq->drv_priv = ctx;
732 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
733 src_vq->ops = &visl_qops;
734 src_vq->mem_ops = &vb2_vmalloc_memops;
735 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
736 src_vq->lock = &ctx->vb_mutex;
737 src_vq->supports_requests = true;
738 src_vq->subsystem_flags |= VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
739
740 ret = vb2_queue_init(q: src_vq);
741 if (ret)
742 return ret;
743
744 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
745 dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
746 dst_vq->drv_priv = ctx;
747 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
748 dst_vq->ops = &visl_qops;
749 dst_vq->mem_ops = &vb2_vmalloc_memops;
750 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
751 dst_vq->lock = &ctx->vb_mutex;
752
753 return vb2_queue_init(q: dst_vq);
754}
755
756int visl_request_validate(struct media_request *req)
757{
758 struct media_request_object *obj;
759 struct visl_ctx *ctx = NULL;
760 unsigned int count;
761
762 list_for_each_entry(obj, &req->objects, list) {
763 struct vb2_buffer *vb;
764
765 if (vb2_request_object_is_buffer(obj)) {
766 vb = container_of(obj, struct vb2_buffer, req_obj);
767 ctx = vb2_get_drv_priv(q: vb->vb2_queue);
768
769 break;
770 }
771 }
772
773 if (!ctx)
774 return -ENOENT;
775
776 count = vb2_request_buffer_cnt(req);
777 if (!count) {
778 v4l2_err(&ctx->dev->v4l2_dev,
779 "No buffer was provided with the request\n");
780 return -ENOENT;
781 } else if (count > 1) {
782 v4l2_err(&ctx->dev->v4l2_dev,
783 "More than one buffer was provided with the request\n");
784 return -EINVAL;
785 }
786
787 return vb2_request_validate(req);
788}
789

source code of linux/drivers/media/test-drivers/visl/visl-video.c