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9#include <linux/clk.h>
10#include <linux/module.h>
11#include <linux/platform_device.h>
12#include <linux/pm_runtime.h>
13#include <linux/slab.h>
14
15#include <media/v4l2-ioctl.h>
16#include <media/v4l2-event.h>
17#include <media/videobuf2-dma-contig.h>
18
19#include "delta.h"
20#include "delta-debug.h"
21#include "delta-ipc.h"
22
23#define DELTA_NAME "st-delta"
24
25#define DELTA_PREFIX "[---:----]"
26
27#define to_ctx(__fh) container_of(__fh, struct delta_ctx, fh)
28#define to_au(__vbuf) container_of(__vbuf, struct delta_au, vbuf)
29#define to_frame(__vbuf) container_of(__vbuf, struct delta_frame, vbuf)
30
31#define call_dec_op(dec, op, args...)\
32 ((dec && (dec)->op) ? (dec)->op(args) : 0)
33
34
35static const struct delta_dec *delta_decoders[] = {
36#ifdef CONFIG_VIDEO_STI_DELTA_MJPEG
37 &mjpegdec,
38#endif
39};
40
41static inline int frame_size(u32 w, u32 h, u32 fmt)
42{
43 switch (fmt) {
44 case V4L2_PIX_FMT_NV12:
45 return (w * h * 3) / 2;
46 default:
47 return 0;
48 }
49}
50
51static inline int frame_stride(u32 w, u32 fmt)
52{
53 switch (fmt) {
54 case V4L2_PIX_FMT_NV12:
55 return w;
56 default:
57 return 0;
58 }
59}
60
61static void dump_au(struct delta_ctx *ctx, struct delta_au *au)
62{
63 struct delta_dev *delta = ctx->dev;
64 u32 size = 10;
65 u8 *data = (u8 *)(au->vaddr);
66
67 if (au->size <= (size * 2))
68 dev_dbg(delta->dev, "%s dump au[%d] dts=%lld size=%d data=%*ph\n",
69 ctx->name, au->vbuf.vb2_buf.index, au->dts, au->size,
70 au->size, data);
71 else
72 dev_dbg(delta->dev, "%s dump au[%d] dts=%lld size=%d data=%*ph..%*ph\n",
73 ctx->name, au->vbuf.vb2_buf.index, au->dts, au->size,
74 size, data, size, data + au->size - size);
75}
76
77static void dump_frame(struct delta_ctx *ctx, struct delta_frame *frame)
78{
79 struct delta_dev *delta = ctx->dev;
80 u32 size = 10;
81 u8 *data = (u8 *)(frame->vaddr);
82
83 dev_dbg(delta->dev, "%s dump frame[%d] dts=%lld type=%s field=%s data=%*ph\n",
84 ctx->name, frame->index, frame->dts,
85 frame_type_str(frame->flags),
86 frame_field_str(frame->field),
87 size, data);
88}
89
90static void delta_au_done(struct delta_ctx *ctx, struct delta_au *au, int err)
91{
92 struct vb2_v4l2_buffer *vbuf;
93
94 vbuf = &au->vbuf;
95 vbuf->sequence = ctx->au_num++;
96 v4l2_m2m_buf_done(vbuf, err ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
97}
98
99static void delta_frame_done(struct delta_ctx *ctx, struct delta_frame *frame,
100 int err)
101{
102 struct vb2_v4l2_buffer *vbuf;
103
104 dump_frame(ctx, frame);
105
106
107 frame->state |= DELTA_FRAME_OUT;
108
109 vbuf = &frame->vbuf;
110 vbuf->sequence = ctx->frame_num++;
111 v4l2_m2m_buf_done(vbuf, err ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
112
113 if (frame->info.size)
114 ctx->output_frames++;
115}
116
117static void requeue_free_frames(struct delta_ctx *ctx)
118{
119 struct vb2_v4l2_buffer *vbuf;
120 struct delta_frame *frame;
121 unsigned int i;
122
123
124 for (i = 0; i < ctx->nb_of_frames; i++) {
125 frame = ctx->frames[i];
126 if (frame->state == DELTA_FRAME_FREE) {
127 vbuf = &frame->vbuf;
128 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
129 frame->state = DELTA_FRAME_M2M;
130 }
131 }
132}
133
134static int delta_recycle(struct delta_ctx *ctx, struct delta_frame *frame)
135{
136 const struct delta_dec *dec = ctx->dec;
137
138
139 call_dec_op(dec, recycle, ctx, frame);
140
141
142 frame->state &= ~DELTA_FRAME_OUT;
143
144
145 if (frame->state == DELTA_FRAME_FREE) {
146 struct vb2_v4l2_buffer *vbuf = &frame->vbuf;
147
148 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
149 frame->state = DELTA_FRAME_M2M;
150 }
151
152
153 frame->flags = 0;
154 frame->dts = 0;
155
156 return 0;
157}
158
159static void delta_push_dts(struct delta_ctx *ctx, u64 val)
160{
161 struct delta_dts *dts;
162
163 dts = kzalloc(sizeof(*dts), GFP_KERNEL);
164 if (!dts)
165 return;
166
167 INIT_LIST_HEAD(&dts->list);
168
169
170
171
172
173 dts->val = val;
174 list_add_tail(&dts->list, &ctx->dts);
175}
176
177static void delta_pop_dts(struct delta_ctx *ctx, u64 *val)
178{
179 struct delta_dev *delta = ctx->dev;
180 struct delta_dts *dts;
181
182
183
184
185
186 if (list_empty(&ctx->dts)) {
187 dev_warn(delta->dev, "%s no dts to pop ... output dts = 0\n",
188 ctx->name);
189 *val = 0;
190 return;
191 }
192
193 dts = list_first_entry(&ctx->dts, struct delta_dts, list);
194 list_del(&dts->list);
195
196 *val = dts->val;
197
198 kfree(dts);
199}
200
201static void delta_flush_dts(struct delta_ctx *ctx)
202{
203 struct delta_dts *dts;
204 struct delta_dts *next;
205
206
207
208
209
210
211
212 list_for_each_entry_safe(dts, next, &ctx->dts, list)
213 kfree(dts);
214
215
216 INIT_LIST_HEAD(&ctx->dts);
217}
218
219static inline int frame_alignment(u32 fmt)
220{
221 switch (fmt) {
222 case V4L2_PIX_FMT_NV12:
223 case V4L2_PIX_FMT_NV21:
224
225 return 2;
226 default:
227 return 1;
228 }
229}
230
231static inline int estimated_au_size(u32 w, u32 h)
232{
233
234
235
236
237
238
239 return (w * h);
240}
241
242static void set_default_params(struct delta_ctx *ctx)
243{
244 struct delta_frameinfo *frameinfo = &ctx->frameinfo;
245 struct delta_streaminfo *streaminfo = &ctx->streaminfo;
246
247 memset(frameinfo, 0, sizeof(*frameinfo));
248 frameinfo->pixelformat = V4L2_PIX_FMT_NV12;
249 frameinfo->width = DELTA_DEFAULT_WIDTH;
250 frameinfo->height = DELTA_DEFAULT_HEIGHT;
251 frameinfo->aligned_width = ALIGN(frameinfo->width,
252 DELTA_WIDTH_ALIGNMENT);
253 frameinfo->aligned_height = ALIGN(frameinfo->height,
254 DELTA_HEIGHT_ALIGNMENT);
255 frameinfo->size = frame_size(frameinfo->aligned_width,
256 frameinfo->aligned_height,
257 frameinfo->pixelformat);
258 frameinfo->field = V4L2_FIELD_NONE;
259 frameinfo->colorspace = V4L2_COLORSPACE_REC709;
260 frameinfo->xfer_func = V4L2_XFER_FUNC_DEFAULT;
261 frameinfo->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
262 frameinfo->quantization = V4L2_QUANTIZATION_DEFAULT;
263
264 memset(streaminfo, 0, sizeof(*streaminfo));
265 streaminfo->streamformat = DELTA_DEFAULT_STREAMFORMAT;
266 streaminfo->width = DELTA_DEFAULT_WIDTH;
267 streaminfo->height = DELTA_DEFAULT_HEIGHT;
268 streaminfo->field = V4L2_FIELD_NONE;
269 streaminfo->colorspace = V4L2_COLORSPACE_REC709;
270 streaminfo->xfer_func = V4L2_XFER_FUNC_DEFAULT;
271 streaminfo->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
272 streaminfo->quantization = V4L2_QUANTIZATION_DEFAULT;
273
274 ctx->max_au_size = estimated_au_size(streaminfo->width,
275 streaminfo->height);
276}
277
278static const struct delta_dec *delta_find_decoder(struct delta_ctx *ctx,
279 u32 streamformat,
280 u32 pixelformat)
281{
282 struct delta_dev *delta = ctx->dev;
283 const struct delta_dec *dec;
284 unsigned int i;
285
286 for (i = 0; i < delta->nb_of_decoders; i++) {
287 dec = delta->decoders[i];
288 if ((dec->pixelformat == pixelformat) &&
289 (dec->streamformat == streamformat))
290 return dec;
291 }
292
293 return NULL;
294}
295
296static void register_format(u32 format, u32 formats[], u32 *nb_of_formats)
297{
298 u32 i;
299
300 for (i = 0; i < *nb_of_formats; i++) {
301 if (format == formats[i])
302 return;
303 }
304
305 formats[(*nb_of_formats)++] = format;
306}
307
308static void register_formats(struct delta_dev *delta)
309{
310 unsigned int i;
311
312 for (i = 0; i < delta->nb_of_decoders; i++) {
313 register_format(delta->decoders[i]->pixelformat,
314 delta->pixelformats,
315 &delta->nb_of_pixelformats);
316
317 register_format(delta->decoders[i]->streamformat,
318 delta->streamformats,
319 &delta->nb_of_streamformats);
320 }
321}
322
323static void register_decoders(struct delta_dev *delta)
324{
325 unsigned int i;
326
327 for (i = 0; i < ARRAY_SIZE(delta_decoders); i++) {
328 if (delta->nb_of_decoders >= DELTA_MAX_DECODERS) {
329 dev_dbg(delta->dev,
330 "%s failed to register %s decoder (%d maximum reached)\n",
331 DELTA_PREFIX, delta_decoders[i]->name,
332 DELTA_MAX_DECODERS);
333 return;
334 }
335
336 delta->decoders[delta->nb_of_decoders++] = delta_decoders[i];
337 dev_info(delta->dev, "%s %s decoder registered\n",
338 DELTA_PREFIX, delta_decoders[i]->name);
339 }
340}
341
342static int delta_open_decoder(struct delta_ctx *ctx, u32 streamformat,
343 u32 pixelformat, const struct delta_dec **pdec)
344{
345 struct delta_dev *delta = ctx->dev;
346 const struct delta_dec *dec;
347 int ret;
348
349 dec = delta_find_decoder(ctx, streamformat, ctx->frameinfo.pixelformat);
350 if (!dec) {
351 dev_err(delta->dev, "%s no decoder found matching %4.4s => %4.4s\n",
352 ctx->name, (char *)&streamformat, (char *)&pixelformat);
353 return -EINVAL;
354 }
355
356 dev_dbg(delta->dev, "%s one decoder matching %4.4s => %4.4s\n",
357 ctx->name, (char *)&streamformat, (char *)&pixelformat);
358
359
360 snprintf(ctx->name, sizeof(ctx->name), "[%3d:%4.4s]",
361 delta->instance_id, (char *)&streamformat);
362
363
364 ret = call_dec_op(dec, open, ctx);
365 if (ret) {
366 dev_err(delta->dev, "%s failed to open decoder instance (%d)\n",
367 ctx->name, ret);
368 return ret;
369 }
370
371 dev_dbg(delta->dev, "%s %s decoder opened\n", ctx->name, dec->name);
372
373 *pdec = dec;
374
375 return ret;
376}
377
378
379
380
381
382static int delta_querycap(struct file *file, void *priv,
383 struct v4l2_capability *cap)
384{
385 struct delta_ctx *ctx = to_ctx(file->private_data);
386 struct delta_dev *delta = ctx->dev;
387
388 strscpy(cap->driver, DELTA_NAME, sizeof(cap->driver));
389 strscpy(cap->card, delta->vdev->name, sizeof(cap->card));
390 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
391 delta->pdev->name);
392
393 return 0;
394}
395
396static int delta_enum_fmt_stream(struct file *file, void *priv,
397 struct v4l2_fmtdesc *f)
398{
399 struct delta_ctx *ctx = to_ctx(file->private_data);
400 struct delta_dev *delta = ctx->dev;
401
402 if (unlikely(f->index >= delta->nb_of_streamformats))
403 return -EINVAL;
404
405 f->pixelformat = delta->streamformats[f->index];
406
407 return 0;
408}
409
410static int delta_enum_fmt_frame(struct file *file, void *priv,
411 struct v4l2_fmtdesc *f)
412{
413 struct delta_ctx *ctx = to_ctx(file->private_data);
414 struct delta_dev *delta = ctx->dev;
415
416 if (unlikely(f->index >= delta->nb_of_pixelformats))
417 return -EINVAL;
418
419 f->pixelformat = delta->pixelformats[f->index];
420
421 return 0;
422}
423
424static int delta_g_fmt_stream(struct file *file, void *fh,
425 struct v4l2_format *f)
426{
427 struct delta_ctx *ctx = to_ctx(file->private_data);
428 struct delta_dev *delta = ctx->dev;
429 struct v4l2_pix_format *pix = &f->fmt.pix;
430 struct delta_streaminfo *streaminfo = &ctx->streaminfo;
431 unsigned char str[100] = "";
432
433 if (!(ctx->flags & DELTA_FLAG_STREAMINFO))
434 dev_dbg(delta->dev,
435 "%s V4L2 GET_FMT (OUTPUT): no stream information available, default to %s\n",
436 ctx->name,
437 delta_streaminfo_str(streaminfo, str, sizeof(str)));
438
439 pix->pixelformat = streaminfo->streamformat;
440 pix->width = streaminfo->width;
441 pix->height = streaminfo->height;
442 pix->field = streaminfo->field;
443 pix->bytesperline = 0;
444 pix->sizeimage = ctx->max_au_size;
445 pix->colorspace = streaminfo->colorspace;
446 pix->xfer_func = streaminfo->xfer_func;
447 pix->ycbcr_enc = streaminfo->ycbcr_enc;
448 pix->quantization = streaminfo->quantization;
449
450 return 0;
451}
452
453static int delta_g_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
454{
455 struct delta_ctx *ctx = to_ctx(file->private_data);
456 struct delta_dev *delta = ctx->dev;
457 struct v4l2_pix_format *pix = &f->fmt.pix;
458 struct delta_frameinfo *frameinfo = &ctx->frameinfo;
459 struct delta_streaminfo *streaminfo = &ctx->streaminfo;
460 unsigned char str[100] = "";
461
462 if (!(ctx->flags & DELTA_FLAG_FRAMEINFO))
463 dev_dbg(delta->dev,
464 "%s V4L2 GET_FMT (CAPTURE): no frame information available, default to %s\n",
465 ctx->name,
466 delta_frameinfo_str(frameinfo, str, sizeof(str)));
467
468 pix->pixelformat = frameinfo->pixelformat;
469 pix->width = frameinfo->aligned_width;
470 pix->height = frameinfo->aligned_height;
471 pix->field = frameinfo->field;
472 pix->bytesperline = frame_stride(frameinfo->aligned_width,
473 frameinfo->pixelformat);
474 pix->sizeimage = frameinfo->size;
475
476 if (ctx->flags & DELTA_FLAG_STREAMINFO) {
477
478 frameinfo->colorspace = streaminfo->colorspace;
479 frameinfo->xfer_func = streaminfo->xfer_func;
480 frameinfo->ycbcr_enc = streaminfo->ycbcr_enc;
481 frameinfo->quantization = streaminfo->quantization;
482 }
483 pix->colorspace = frameinfo->colorspace;
484 pix->xfer_func = frameinfo->xfer_func;
485 pix->ycbcr_enc = frameinfo->ycbcr_enc;
486 pix->quantization = frameinfo->quantization;
487
488 return 0;
489}
490
491static int delta_try_fmt_stream(struct file *file, void *priv,
492 struct v4l2_format *f)
493{
494 struct delta_ctx *ctx = to_ctx(file->private_data);
495 struct delta_dev *delta = ctx->dev;
496 struct v4l2_pix_format *pix = &f->fmt.pix;
497 u32 streamformat = pix->pixelformat;
498 const struct delta_dec *dec;
499 u32 width, height;
500 u32 au_size;
501
502 dec = delta_find_decoder(ctx, streamformat, ctx->frameinfo.pixelformat);
503 if (!dec) {
504 dev_dbg(delta->dev,
505 "%s V4L2 TRY_FMT (OUTPUT): unsupported format %4.4s\n",
506 ctx->name, (char *)&pix->pixelformat);
507 return -EINVAL;
508 }
509
510
511 width = pix->width;
512 height = pix->height;
513 v4l_bound_align_image
514 (&pix->width,
515 DELTA_MIN_WIDTH,
516 dec->max_width ? dec->max_width : DELTA_MAX_WIDTH,
517 0,
518 &pix->height,
519 DELTA_MIN_HEIGHT,
520 dec->max_height ? dec->max_height : DELTA_MAX_HEIGHT,
521 0, 0);
522
523 if ((pix->width != width) || (pix->height != height))
524 dev_dbg(delta->dev,
525 "%s V4L2 TRY_FMT (OUTPUT): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
526 ctx->name, width, height,
527 pix->width, pix->height);
528
529 au_size = estimated_au_size(pix->width, pix->height);
530 if (pix->sizeimage < au_size) {
531 dev_dbg(delta->dev,
532 "%s V4L2 TRY_FMT (OUTPUT): size updated %d -> %d to fit estimated size\n",
533 ctx->name, pix->sizeimage, au_size);
534 pix->sizeimage = au_size;
535 }
536
537 pix->bytesperline = 0;
538
539 if (pix->field == V4L2_FIELD_ANY)
540 pix->field = V4L2_FIELD_NONE;
541
542 return 0;
543}
544
545static int delta_try_fmt_frame(struct file *file, void *priv,
546 struct v4l2_format *f)
547{
548 struct delta_ctx *ctx = to_ctx(file->private_data);
549 struct delta_dev *delta = ctx->dev;
550 struct v4l2_pix_format *pix = &f->fmt.pix;
551 u32 pixelformat = pix->pixelformat;
552 const struct delta_dec *dec;
553 u32 width, height;
554
555 dec = delta_find_decoder(ctx, ctx->streaminfo.streamformat,
556 pixelformat);
557 if (!dec) {
558 dev_dbg(delta->dev,
559 "%s V4L2 TRY_FMT (CAPTURE): unsupported format %4.4s\n",
560 ctx->name, (char *)&pixelformat);
561 return -EINVAL;
562 }
563
564
565 width = pix->width;
566 height = pix->height;
567 v4l_bound_align_image(&pix->width,
568 DELTA_MIN_WIDTH, DELTA_MAX_WIDTH,
569 frame_alignment(pixelformat) - 1,
570 &pix->height,
571 DELTA_MIN_HEIGHT, DELTA_MAX_HEIGHT,
572 frame_alignment(pixelformat) - 1, 0);
573
574 if ((pix->width != width) || (pix->height != height))
575 dev_dbg(delta->dev,
576 "%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit min/max/alignment\n",
577 ctx->name, width, height, pix->width, pix->height);
578
579
580 width = ALIGN(pix->width, DELTA_WIDTH_ALIGNMENT);
581 height = ALIGN(pix->height, DELTA_HEIGHT_ALIGNMENT);
582 if ((pix->width != width) || (pix->height != height))
583 dev_dbg(delta->dev,
584 "%s V4L2 TRY_FMT (CAPTURE): resolution updated %dx%d -> %dx%d to fit decoder alignment\n",
585 ctx->name, width, height, pix->width, pix->height);
586
587 if (!pix->colorspace) {
588 pix->colorspace = V4L2_COLORSPACE_REC709;
589 pix->xfer_func = V4L2_XFER_FUNC_DEFAULT;
590 pix->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
591 pix->quantization = V4L2_QUANTIZATION_DEFAULT;
592 }
593
594 pix->width = width;
595 pix->height = height;
596 pix->bytesperline = frame_stride(pix->width, pixelformat);
597 pix->sizeimage = frame_size(pix->width, pix->height, pixelformat);
598
599 if (pix->field == V4L2_FIELD_ANY)
600 pix->field = V4L2_FIELD_NONE;
601
602 return 0;
603}
604
605static int delta_s_fmt_stream(struct file *file, void *fh,
606 struct v4l2_format *f)
607{
608 struct delta_ctx *ctx = to_ctx(file->private_data);
609 struct delta_dev *delta = ctx->dev;
610 struct vb2_queue *vq;
611 struct v4l2_pix_format *pix = &f->fmt.pix;
612 int ret;
613
614 ret = delta_try_fmt_stream(file, fh, f);
615 if (ret) {
616 dev_dbg(delta->dev,
617 "%s V4L2 S_FMT (OUTPUT): unsupported format %4.4s\n",
618 ctx->name, (char *)&pix->pixelformat);
619 return ret;
620 }
621
622 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
623 if (vb2_is_streaming(vq)) {
624 dev_dbg(delta->dev, "%s V4L2 S_FMT (OUTPUT): queue busy\n",
625 ctx->name);
626 return -EBUSY;
627 }
628
629 ctx->max_au_size = pix->sizeimage;
630 ctx->streaminfo.width = pix->width;
631 ctx->streaminfo.height = pix->height;
632 ctx->streaminfo.streamformat = pix->pixelformat;
633 ctx->streaminfo.colorspace = pix->colorspace;
634 ctx->streaminfo.xfer_func = pix->xfer_func;
635 ctx->streaminfo.ycbcr_enc = pix->ycbcr_enc;
636 ctx->streaminfo.quantization = pix->quantization;
637 ctx->flags |= DELTA_FLAG_STREAMINFO;
638
639 return 0;
640}
641
642static int delta_s_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
643{
644 struct delta_ctx *ctx = to_ctx(file->private_data);
645 struct delta_dev *delta = ctx->dev;
646 const struct delta_dec *dec = ctx->dec;
647 struct v4l2_pix_format *pix = &f->fmt.pix;
648 struct delta_frameinfo frameinfo;
649 unsigned char str[100] = "";
650 struct vb2_queue *vq;
651 int ret;
652
653 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
654 if (vb2_is_streaming(vq)) {
655 dev_dbg(delta->dev, "%s V4L2 S_FMT (CAPTURE): queue busy\n",
656 ctx->name);
657 return -EBUSY;
658 }
659
660 if (ctx->state < DELTA_STATE_READY) {
661
662
663
664
665
666
667 ret = delta_try_fmt_frame(file, fh, f);
668 if (ret) {
669 dev_dbg(delta->dev,
670 "%s V4L2 S_FMT (CAPTURE): unsupported format %4.4s\n",
671 ctx->name, (char *)&pix->pixelformat);
672 return ret;
673 }
674
675 return 0;
676 }
677
678
679 memset(&frameinfo, 0, sizeof(frameinfo));
680 frameinfo.pixelformat = pix->pixelformat;
681 frameinfo.width = pix->width;
682 frameinfo.height = pix->height;
683 frameinfo.aligned_width = pix->width;
684 frameinfo.aligned_height = pix->height;
685 frameinfo.size = pix->sizeimage;
686 frameinfo.field = pix->field;
687 frameinfo.colorspace = pix->colorspace;
688 frameinfo.xfer_func = pix->xfer_func;
689 frameinfo.ycbcr_enc = pix->ycbcr_enc;
690 frameinfo.quantization = pix->quantization;
691 ret = call_dec_op(dec, set_frameinfo, ctx, &frameinfo);
692 if (ret)
693 return ret;
694
695
696 ret = call_dec_op(dec, get_frameinfo, ctx, &frameinfo);
697 if (ret)
698 return ret;
699
700 ctx->flags |= DELTA_FLAG_FRAMEINFO;
701 ctx->frameinfo = frameinfo;
702 dev_dbg(delta->dev,
703 "%s V4L2 SET_FMT (CAPTURE): frameinfo updated to %s\n",
704 ctx->name,
705 delta_frameinfo_str(&frameinfo, str, sizeof(str)));
706
707 pix->pixelformat = frameinfo.pixelformat;
708 pix->width = frameinfo.aligned_width;
709 pix->height = frameinfo.aligned_height;
710 pix->bytesperline = frame_stride(pix->width, pix->pixelformat);
711 pix->sizeimage = frameinfo.size;
712 pix->field = frameinfo.field;
713 pix->colorspace = frameinfo.colorspace;
714 pix->xfer_func = frameinfo.xfer_func;
715 pix->ycbcr_enc = frameinfo.ycbcr_enc;
716 pix->quantization = frameinfo.quantization;
717
718 return 0;
719}
720
721static int delta_g_selection(struct file *file, void *fh,
722 struct v4l2_selection *s)
723{
724 struct delta_ctx *ctx = to_ctx(fh);
725 struct delta_frameinfo *frameinfo = &ctx->frameinfo;
726 struct v4l2_rect crop;
727
728 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
729 return -EINVAL;
730
731 if ((ctx->flags & DELTA_FLAG_FRAMEINFO) &&
732 (frameinfo->flags & DELTA_FRAMEINFO_FLAG_CROP)) {
733 crop = frameinfo->crop;
734 } else {
735
736 crop.left = 0;
737 crop.top = 0;
738 crop.width = frameinfo->width;
739 crop.height = frameinfo->height;
740 }
741
742 switch (s->target) {
743 case V4L2_SEL_TGT_COMPOSE:
744 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
745
746 s->r = crop;
747 break;
748 case V4L2_SEL_TGT_COMPOSE_PADDED:
749 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
750
751 s->r.left = 0;
752 s->r.top = 0;
753 s->r.width = frameinfo->aligned_width;
754 s->r.height = frameinfo->aligned_height;
755 break;
756 default:
757 return -EINVAL;
758 }
759
760 return 0;
761}
762
763static void delta_complete_eos(struct delta_ctx *ctx,
764 struct delta_frame *frame)
765{
766 struct delta_dev *delta = ctx->dev;
767 const struct v4l2_event ev = {.type = V4L2_EVENT_EOS};
768
769
770
771
772
773
774
775
776 frame->info.size = 0;
777
778
779 frame->flags |= V4L2_BUF_FLAG_LAST;
780
781
782 delta_frame_done(ctx, frame, 0);
783
784
785 v4l2_event_queue_fh(&ctx->fh, &ev);
786
787 dev_dbg(delta->dev, "%s EOS completed\n", ctx->name);
788}
789
790static int delta_try_decoder_cmd(struct file *file, void *fh,
791 struct v4l2_decoder_cmd *cmd)
792{
793 if (cmd->cmd != V4L2_DEC_CMD_STOP)
794 return -EINVAL;
795
796 if (cmd->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
797 return -EINVAL;
798
799 if (!(cmd->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) &&
800 (cmd->stop.pts != 0))
801 return -EINVAL;
802
803 return 0;
804}
805
806static int delta_decoder_stop_cmd(struct delta_ctx *ctx, void *fh)
807{
808 const struct delta_dec *dec = ctx->dec;
809 struct delta_dev *delta = ctx->dev;
810 struct delta_frame *frame = NULL;
811 int ret = 0;
812
813 dev_dbg(delta->dev, "%s EOS received\n", ctx->name);
814
815 if (ctx->state != DELTA_STATE_READY)
816 return 0;
817
818
819 call_dec_op(dec, drain, ctx);
820
821
822 while (1) {
823 frame = NULL;
824 ret = call_dec_op(dec, get_frame, ctx, &frame);
825 if (ret == -ENODATA) {
826
827 break;
828 }
829 if (frame) {
830 dev_dbg(delta->dev, "%s drain frame[%d]\n",
831 ctx->name, frame->index);
832
833
834 delta_pop_dts(ctx, &frame->dts);
835
836
837 delta_frame_done(ctx, frame, 0);
838 }
839 }
840
841
842 ret = delta_get_free_frame(ctx, &frame);
843 if (ret)
844 goto delay_eos;
845
846
847 delta_complete_eos(ctx, frame);
848
849 ctx->state = DELTA_STATE_EOS;
850
851 return 0;
852
853delay_eos:
854
855
856
857
858
859
860 ctx->state = DELTA_STATE_WF_EOS;
861 dev_dbg(delta->dev, "%s EOS delayed\n", ctx->name);
862
863 return 0;
864}
865
866static int delta_decoder_cmd(struct file *file, void *fh,
867 struct v4l2_decoder_cmd *cmd)
868{
869 struct delta_ctx *ctx = to_ctx(fh);
870 int ret = 0;
871
872 ret = delta_try_decoder_cmd(file, fh, cmd);
873 if (ret)
874 return ret;
875
876 return delta_decoder_stop_cmd(ctx, fh);
877}
878
879static int delta_subscribe_event(struct v4l2_fh *fh,
880 const struct v4l2_event_subscription *sub)
881{
882 switch (sub->type) {
883 case V4L2_EVENT_EOS:
884 return v4l2_event_subscribe(fh, sub, 2, NULL);
885 default:
886 return -EINVAL;
887 }
888
889 return 0;
890}
891
892
893static const struct v4l2_ioctl_ops delta_ioctl_ops = {
894 .vidioc_querycap = delta_querycap,
895 .vidioc_enum_fmt_vid_cap = delta_enum_fmt_frame,
896 .vidioc_g_fmt_vid_cap = delta_g_fmt_frame,
897 .vidioc_try_fmt_vid_cap = delta_try_fmt_frame,
898 .vidioc_s_fmt_vid_cap = delta_s_fmt_frame,
899 .vidioc_enum_fmt_vid_out = delta_enum_fmt_stream,
900 .vidioc_g_fmt_vid_out = delta_g_fmt_stream,
901 .vidioc_try_fmt_vid_out = delta_try_fmt_stream,
902 .vidioc_s_fmt_vid_out = delta_s_fmt_stream,
903 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
904 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
905 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
906 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
907 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
908 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
909 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
910 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
911 .vidioc_g_selection = delta_g_selection,
912 .vidioc_try_decoder_cmd = delta_try_decoder_cmd,
913 .vidioc_decoder_cmd = delta_decoder_cmd,
914 .vidioc_subscribe_event = delta_subscribe_event,
915 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
916};
917
918
919
920
921
922static void delta_run_work(struct work_struct *work)
923{
924 struct delta_ctx *ctx = container_of(work, struct delta_ctx, run_work);
925 struct delta_dev *delta = ctx->dev;
926 const struct delta_dec *dec = ctx->dec;
927 struct delta_au *au;
928 struct delta_frame *frame = NULL;
929 int ret = 0;
930 bool discard = false;
931 struct vb2_v4l2_buffer *vbuf;
932
933 if (!dec) {
934 dev_err(delta->dev, "%s no decoder opened yet\n", ctx->name);
935 return;
936 }
937
938
939 mutex_lock(&ctx->lock);
940
941 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
942 if (!vbuf) {
943 dev_err(delta->dev, "%s no buffer to decode\n", ctx->name);
944 mutex_unlock(&ctx->lock);
945 return;
946 }
947 au = to_au(vbuf);
948 au->size = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
949 au->dts = vbuf->vb2_buf.timestamp;
950
951
952 dump_au(ctx, au);
953
954
955 if (!dec->pm) {
956 ret = delta_get_sync(ctx);
957 if (ret) {
958 delta_put_autosuspend(ctx);
959 goto err;
960 }
961 }
962
963
964 ret = call_dec_op(dec, decode, ctx, au);
965
966
967
968
969
970
971
972
973
974
975 if (ret == -ENODATA) {
976 discard = true;
977 } else if (ret) {
978 dev_err(delta->dev, "%s decoding failed (%d)\n",
979 ctx->name, ret);
980
981
982 if (!dec->pm)
983 delta_put_autosuspend(ctx);
984
985 goto err;
986 }
987
988
989 if (!dec->pm)
990 delta_put_autosuspend(ctx);
991
992
993 if (!discard)
994 delta_push_dts(ctx, au->dts);
995
996
997 while (1) {
998 ret = call_dec_op(dec, get_frame, ctx, &frame);
999 if (ret == -ENODATA) {
1000
1001 goto out;
1002 }
1003 if (ret) {
1004 dev_err(delta->dev, "%s cannot get decoded frame (%d)\n",
1005 ctx->name, ret);
1006 goto out;
1007 }
1008 if (!frame) {
1009 dev_err(delta->dev,
1010 "%s NULL decoded frame\n",
1011 ctx->name);
1012 ret = -EIO;
1013 goto out;
1014 }
1015
1016
1017 delta_pop_dts(ctx, &frame->dts);
1018
1019
1020 delta_frame_done(ctx, frame, 0);
1021 }
1022
1023out:
1024 requeue_free_frames(ctx);
1025 delta_au_done(ctx, au, (discard ? -ENODATA : 0));
1026 mutex_unlock(&ctx->lock);
1027 v4l2_m2m_job_finish(delta->m2m_dev, ctx->fh.m2m_ctx);
1028 return;
1029
1030err:
1031 requeue_free_frames(ctx);
1032 delta_au_done(ctx, au, ret);
1033 mutex_unlock(&ctx->lock);
1034 v4l2_m2m_job_finish(delta->m2m_dev, ctx->fh.m2m_ctx);
1035}
1036
1037static void delta_device_run(void *priv)
1038{
1039 struct delta_ctx *ctx = priv;
1040 struct delta_dev *delta = ctx->dev;
1041
1042 queue_work(delta->work_queue, &ctx->run_work);
1043}
1044
1045static void delta_job_abort(void *priv)
1046{
1047 struct delta_ctx *ctx = priv;
1048 struct delta_dev *delta = ctx->dev;
1049
1050 dev_dbg(delta->dev, "%s aborting job\n", ctx->name);
1051
1052 ctx->aborting = true;
1053}
1054
1055static int delta_job_ready(void *priv)
1056{
1057 struct delta_ctx *ctx = priv;
1058 struct delta_dev *delta = ctx->dev;
1059 int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1060
1061 if (!src_bufs) {
1062 dev_dbg(delta->dev, "%s not ready: not enough video buffers.\n",
1063 ctx->name);
1064 return 0;
1065 }
1066
1067 if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1068 dev_dbg(delta->dev, "%s not ready: not enough video capture buffers.\n",
1069 ctx->name);
1070 return 0;
1071 }
1072
1073 if (ctx->aborting) {
1074 dev_dbg(delta->dev, "%s job not ready: aborting\n", ctx->name);
1075 return 0;
1076 }
1077
1078 dev_dbg(delta->dev, "%s job ready\n", ctx->name);
1079
1080 return 1;
1081}
1082
1083
1084static const struct v4l2_m2m_ops delta_m2m_ops = {
1085 .device_run = delta_device_run,
1086 .job_ready = delta_job_ready,
1087 .job_abort = delta_job_abort,
1088};
1089
1090
1091
1092
1093
1094static int delta_vb2_au_queue_setup(struct vb2_queue *vq,
1095 unsigned int *num_buffers,
1096 unsigned int *num_planes,
1097 unsigned int sizes[],
1098 struct device *alloc_devs[])
1099{
1100 struct delta_ctx *ctx = vb2_get_drv_priv(vq);
1101 unsigned int size = ctx->max_au_size;
1102
1103 if (*num_planes)
1104 return sizes[0] < size ? -EINVAL : 0;
1105
1106 *num_planes = 1;
1107 if (*num_buffers < 1)
1108 *num_buffers = 1;
1109 if (*num_buffers > DELTA_MAX_AUS)
1110 *num_buffers = DELTA_MAX_AUS;
1111
1112 sizes[0] = size;
1113
1114 return 0;
1115}
1116
1117static int delta_vb2_au_prepare(struct vb2_buffer *vb)
1118{
1119 struct vb2_queue *q = vb->vb2_queue;
1120 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1121 struct delta_dev *delta = ctx->dev;
1122 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1123 struct delta_au *au = to_au(vbuf);
1124
1125 if (!au->prepared) {
1126
1127 au->vaddr = vb2_plane_vaddr(&au->vbuf.vb2_buf, 0);
1128 au->paddr = vb2_dma_contig_plane_dma_addr
1129 (&au->vbuf.vb2_buf, 0);
1130 au->prepared = true;
1131 dev_dbg(delta->dev, "%s au[%d] prepared; virt=0x%p, phy=0x%pad\n",
1132 ctx->name, vb->index, au->vaddr, &au->paddr);
1133 }
1134
1135 if (vbuf->field == V4L2_FIELD_ANY)
1136 vbuf->field = V4L2_FIELD_NONE;
1137
1138 return 0;
1139}
1140
1141static int delta_setup_frame(struct delta_ctx *ctx,
1142 struct delta_frame *frame)
1143{
1144 struct delta_dev *delta = ctx->dev;
1145 const struct delta_dec *dec = ctx->dec;
1146
1147 if (frame->index >= DELTA_MAX_FRAMES) {
1148 dev_err(delta->dev,
1149 "%s frame index=%d exceeds output frame count (%d)\n",
1150 ctx->name, frame->index, DELTA_MAX_FRAMES);
1151 return -EINVAL;
1152 }
1153
1154 if (ctx->nb_of_frames >= DELTA_MAX_FRAMES) {
1155 dev_err(delta->dev,
1156 "%s number of frames exceeds output frame count (%d > %d)\n",
1157 ctx->name, ctx->nb_of_frames, DELTA_MAX_FRAMES);
1158 return -EINVAL;
1159 }
1160
1161 if (frame->index != ctx->nb_of_frames) {
1162 dev_warn(delta->dev,
1163 "%s frame index discontinuity detected, expected %d, got %d\n",
1164 ctx->name, ctx->nb_of_frames, frame->index);
1165 }
1166
1167 frame->state = DELTA_FRAME_FREE;
1168 ctx->frames[ctx->nb_of_frames] = frame;
1169 ctx->nb_of_frames++;
1170
1171
1172 return call_dec_op(dec, setup_frame, ctx, frame);
1173}
1174
1175
1176
1177
1178
1179
1180int delta_get_frameinfo_default(struct delta_ctx *ctx,
1181 struct delta_frameinfo *frameinfo)
1182{
1183 struct delta_streaminfo *streaminfo = &ctx->streaminfo;
1184
1185 memset(frameinfo, 0, sizeof(*frameinfo));
1186 frameinfo->pixelformat = V4L2_PIX_FMT_NV12;
1187 frameinfo->width = streaminfo->width;
1188 frameinfo->height = streaminfo->height;
1189 frameinfo->aligned_width = ALIGN(streaminfo->width,
1190 DELTA_WIDTH_ALIGNMENT);
1191 frameinfo->aligned_height = ALIGN(streaminfo->height,
1192 DELTA_HEIGHT_ALIGNMENT);
1193 frameinfo->size = frame_size(frameinfo->aligned_width,
1194 frameinfo->aligned_height,
1195 frameinfo->pixelformat);
1196 if (streaminfo->flags & DELTA_STREAMINFO_FLAG_CROP) {
1197 frameinfo->flags |= DELTA_FRAMEINFO_FLAG_CROP;
1198 frameinfo->crop = streaminfo->crop;
1199 }
1200 if (streaminfo->flags & DELTA_STREAMINFO_FLAG_PIXELASPECT) {
1201 frameinfo->flags |= DELTA_FRAMEINFO_FLAG_PIXELASPECT;
1202 frameinfo->pixelaspect = streaminfo->pixelaspect;
1203 }
1204 frameinfo->field = streaminfo->field;
1205
1206 return 0;
1207}
1208
1209
1210
1211
1212
1213int delta_recycle_default(struct delta_ctx *pctx,
1214 struct delta_frame *frame)
1215{
1216 frame->state &= ~DELTA_FRAME_DEC;
1217
1218 return 0;
1219}
1220
1221static void dump_frames_status(struct delta_ctx *ctx)
1222{
1223 struct delta_dev *delta = ctx->dev;
1224 unsigned int i;
1225 struct delta_frame *frame;
1226 unsigned char str[100] = "";
1227
1228 dev_info(delta->dev,
1229 "%s dumping frames status...\n", ctx->name);
1230
1231 for (i = 0; i < ctx->nb_of_frames; i++) {
1232 frame = ctx->frames[i];
1233 dev_info(delta->dev,
1234 "%s frame[%d] %s\n",
1235 ctx->name, frame->index,
1236 frame_state_str(frame->state,
1237 str, sizeof(str)));
1238 }
1239}
1240
1241int delta_get_free_frame(struct delta_ctx *ctx,
1242 struct delta_frame **pframe)
1243{
1244 struct delta_dev *delta = ctx->dev;
1245 struct vb2_v4l2_buffer *vbuf;
1246 struct delta_frame *frame;
1247
1248 *pframe = NULL;
1249
1250 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1251 if (!vbuf) {
1252 dev_err(delta->dev, "%s no frame available",
1253 ctx->name);
1254 return -EIO;
1255 }
1256
1257 frame = to_frame(vbuf);
1258 frame->state &= ~DELTA_FRAME_M2M;
1259 if (frame->state != DELTA_FRAME_FREE) {
1260 dev_err(delta->dev,
1261 "%s frame[%d] is not free\n",
1262 ctx->name, frame->index);
1263 dump_frames_status(ctx);
1264 return -ENODATA;
1265 }
1266
1267 dev_dbg(delta->dev,
1268 "%s get free frame[%d]\n", ctx->name, frame->index);
1269
1270 *pframe = frame;
1271 return 0;
1272}
1273
1274int delta_get_sync(struct delta_ctx *ctx)
1275{
1276 struct delta_dev *delta = ctx->dev;
1277 int ret = 0;
1278
1279
1280 ret = pm_runtime_get_sync(delta->dev);
1281 if (ret < 0) {
1282 dev_err(delta->dev, "%s pm_runtime_get_sync failed (%d)\n",
1283 __func__, ret);
1284 return ret;
1285 }
1286
1287 return 0;
1288}
1289
1290void delta_put_autosuspend(struct delta_ctx *ctx)
1291{
1292 struct delta_dev *delta = ctx->dev;
1293
1294 pm_runtime_put_autosuspend(delta->dev);
1295}
1296
1297static void delta_vb2_au_queue(struct vb2_buffer *vb)
1298{
1299 struct vb2_queue *q = vb->vb2_queue;
1300 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1301 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1302
1303 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1304}
1305
1306static int delta_vb2_au_start_streaming(struct vb2_queue *q,
1307 unsigned int count)
1308{
1309 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1310 struct delta_dev *delta = ctx->dev;
1311 const struct delta_dec *dec = ctx->dec;
1312 struct delta_au *au;
1313 int ret = 0;
1314 struct vb2_v4l2_buffer *vbuf = NULL;
1315 struct delta_streaminfo *streaminfo = &ctx->streaminfo;
1316 struct delta_frameinfo *frameinfo = &ctx->frameinfo;
1317 unsigned char str1[100] = "";
1318 unsigned char str2[100] = "";
1319
1320 if ((ctx->state != DELTA_STATE_WF_FORMAT) &&
1321 (ctx->state != DELTA_STATE_WF_STREAMINFO))
1322 return 0;
1323
1324 if (ctx->state == DELTA_STATE_WF_FORMAT) {
1325
1326 ret = delta_open_decoder(ctx,
1327 ctx->streaminfo.streamformat,
1328 ctx->frameinfo.pixelformat, &dec);
1329 if (ret)
1330 goto err;
1331 ctx->dec = dec;
1332 ctx->state = DELTA_STATE_WF_STREAMINFO;
1333 }
1334
1335
1336
1337
1338
1339
1340 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1341 if (!vbuf) {
1342 dev_err(delta->dev, "%s failed to start streaming, no stream header buffer enqueued\n",
1343 ctx->name);
1344 ret = -EINVAL;
1345 goto err;
1346 }
1347 au = to_au(vbuf);
1348 au->size = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
1349 au->dts = vbuf->vb2_buf.timestamp;
1350
1351 delta_push_dts(ctx, au->dts);
1352
1353
1354 dump_au(ctx, au);
1355
1356
1357 ret = call_dec_op(dec, decode, ctx, au);
1358 if (ret) {
1359 dev_err(delta->dev, "%s failed to start streaming, header decoding failed (%d)\n",
1360 ctx->name, ret);
1361 goto err;
1362 }
1363
1364 ret = call_dec_op(dec, get_streaminfo, ctx, streaminfo);
1365 if (ret) {
1366 dev_dbg_ratelimited(delta->dev,
1367 "%s failed to start streaming, valid stream header not yet decoded\n",
1368 ctx->name);
1369 goto err;
1370 }
1371 ctx->flags |= DELTA_FLAG_STREAMINFO;
1372
1373 ret = call_dec_op(dec, get_frameinfo, ctx, frameinfo);
1374 if (ret)
1375 goto err;
1376 ctx->flags |= DELTA_FLAG_FRAMEINFO;
1377
1378 ctx->state = DELTA_STATE_READY;
1379
1380 dev_dbg(delta->dev, "%s %s => %s\n", ctx->name,
1381 delta_streaminfo_str(streaminfo, str1, sizeof(str1)),
1382 delta_frameinfo_str(frameinfo, str2, sizeof(str2)));
1383
1384 delta_au_done(ctx, au, ret);
1385 return 0;
1386
1387err:
1388
1389
1390
1391
1392 if (vbuf)
1393 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
1394
1395 while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1396 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
1397 return ret;
1398}
1399
1400static void delta_vb2_au_stop_streaming(struct vb2_queue *q)
1401{
1402 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1403 struct vb2_v4l2_buffer *vbuf;
1404
1405 delta_flush_dts(ctx);
1406
1407
1408 while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
1409 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
1410
1411 ctx->au_num = 0;
1412
1413 ctx->aborting = false;
1414}
1415
1416static int delta_vb2_frame_queue_setup(struct vb2_queue *vq,
1417 unsigned int *num_buffers,
1418 unsigned int *num_planes,
1419 unsigned int sizes[],
1420 struct device *alloc_devs[])
1421{
1422 struct delta_ctx *ctx = vb2_get_drv_priv(vq);
1423 struct delta_dev *delta = ctx->dev;
1424 struct delta_streaminfo *streaminfo = &ctx->streaminfo;
1425 struct delta_frameinfo *frameinfo = &ctx->frameinfo;
1426 unsigned int size = frameinfo->size;
1427
1428
1429
1430
1431
1432
1433
1434 if (*num_buffers < DELTA_MIN_FRAME_USER) {
1435 dev_dbg(delta->dev,
1436 "%s num_buffers too low (%d), increasing to %d\n",
1437 ctx->name, *num_buffers, DELTA_MIN_FRAME_USER);
1438 *num_buffers = DELTA_MIN_FRAME_USER;
1439 }
1440
1441 *num_buffers += streaminfo->dpb + DELTA_PEAK_FRAME_SMOOTHING;
1442
1443 if (*num_buffers > DELTA_MAX_FRAMES) {
1444 dev_dbg(delta->dev,
1445 "%s output frame count too high (%d), cut to %d\n",
1446 ctx->name, *num_buffers, DELTA_MAX_FRAMES);
1447 *num_buffers = DELTA_MAX_FRAMES;
1448 }
1449
1450 if (*num_planes)
1451 return sizes[0] < size ? -EINVAL : 0;
1452
1453
1454 *num_planes = 1;
1455
1456 sizes[0] = size;
1457
1458 ctx->nb_of_frames = 0;
1459
1460 return 0;
1461}
1462
1463static int delta_vb2_frame_prepare(struct vb2_buffer *vb)
1464{
1465 struct vb2_queue *q = vb->vb2_queue;
1466 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1467 struct delta_dev *delta = ctx->dev;
1468 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1469 struct delta_frame *frame = to_frame(vbuf);
1470 int ret = 0;
1471
1472 if (!frame->prepared) {
1473 frame->index = vbuf->vb2_buf.index;
1474 frame->vaddr = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
1475 frame->paddr = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
1476 frame->info = ctx->frameinfo;
1477
1478 ret = delta_setup_frame(ctx, frame);
1479 if (ret) {
1480 dev_err(delta->dev,
1481 "%s setup_frame() failed (%d)\n",
1482 ctx->name, ret);
1483 return ret;
1484 }
1485 frame->prepared = true;
1486 dev_dbg(delta->dev,
1487 "%s frame[%d] prepared; virt=0x%p, phy=0x%pad\n",
1488 ctx->name, vb->index, frame->vaddr,
1489 &frame->paddr);
1490 }
1491
1492 frame->flags = vbuf->flags;
1493
1494 return 0;
1495}
1496
1497static void delta_vb2_frame_finish(struct vb2_buffer *vb)
1498{
1499 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1500 struct delta_frame *frame = to_frame(vbuf);
1501
1502
1503 vb2_set_plane_payload(&vbuf->vb2_buf, 0, frame->info.size);
1504 vb->timestamp = frame->dts;
1505 vbuf->field = frame->field;
1506 vbuf->flags = frame->flags;
1507}
1508
1509static void delta_vb2_frame_queue(struct vb2_buffer *vb)
1510{
1511 struct vb2_queue *q = vb->vb2_queue;
1512 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1513 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1514 struct delta_frame *frame = to_frame(vbuf);
1515
1516 if (ctx->state == DELTA_STATE_WF_EOS) {
1517
1518 delta_complete_eos(ctx, frame);
1519
1520 ctx->state = DELTA_STATE_EOS;
1521
1522
1523 return;
1524 }
1525
1526
1527 delta_recycle(ctx, frame);
1528}
1529
1530static void delta_vb2_frame_stop_streaming(struct vb2_queue *q)
1531{
1532 struct delta_ctx *ctx = vb2_get_drv_priv(q);
1533 struct vb2_v4l2_buffer *vbuf;
1534 struct delta_frame *frame;
1535 const struct delta_dec *dec = ctx->dec;
1536 unsigned int i;
1537
1538 delta_flush_dts(ctx);
1539
1540 call_dec_op(dec, flush, ctx);
1541
1542
1543
1544
1545
1546 for (i = 0; i < ctx->nb_of_frames; i++) {
1547 frame = ctx->frames[i];
1548 if (!(frame->state & DELTA_FRAME_OUT)) {
1549 vbuf = &frame->vbuf;
1550 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
1551 }
1552 frame->state = DELTA_FRAME_OUT;
1553 }
1554
1555 ctx->frame_num = 0;
1556
1557 ctx->aborting = false;
1558}
1559
1560
1561static const struct vb2_ops delta_vb2_au_ops = {
1562 .queue_setup = delta_vb2_au_queue_setup,
1563 .buf_prepare = delta_vb2_au_prepare,
1564 .buf_queue = delta_vb2_au_queue,
1565 .wait_prepare = vb2_ops_wait_prepare,
1566 .wait_finish = vb2_ops_wait_finish,
1567 .start_streaming = delta_vb2_au_start_streaming,
1568 .stop_streaming = delta_vb2_au_stop_streaming,
1569};
1570
1571static const struct vb2_ops delta_vb2_frame_ops = {
1572 .queue_setup = delta_vb2_frame_queue_setup,
1573 .buf_prepare = delta_vb2_frame_prepare,
1574 .buf_finish = delta_vb2_frame_finish,
1575 .buf_queue = delta_vb2_frame_queue,
1576 .wait_prepare = vb2_ops_wait_prepare,
1577 .wait_finish = vb2_ops_wait_finish,
1578 .stop_streaming = delta_vb2_frame_stop_streaming,
1579};
1580
1581
1582
1583
1584
1585static int queue_init(void *priv,
1586 struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
1587{
1588 struct vb2_queue *q;
1589 struct delta_ctx *ctx = priv;
1590 struct delta_dev *delta = ctx->dev;
1591 int ret;
1592
1593
1594 q = src_vq;
1595 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1596 q->io_modes = VB2_MMAP | VB2_DMABUF;
1597 q->drv_priv = ctx;
1598
1599 q->buf_struct_size = sizeof(struct delta_au);
1600 q->ops = &delta_vb2_au_ops;
1601 q->mem_ops = &vb2_dma_contig_memops;
1602 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1603 q->lock = &delta->lock;
1604 q->dev = delta->dev;
1605
1606 ret = vb2_queue_init(q);
1607 if (ret)
1608 return ret;
1609
1610
1611 q = dst_vq;
1612 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1613 q->io_modes = VB2_MMAP | VB2_DMABUF;
1614 q->drv_priv = ctx;
1615
1616 q->buf_struct_size = sizeof(struct delta_frame)
1617 + DELTA_MAX_FRAME_PRIV_SIZE;
1618 q->ops = &delta_vb2_frame_ops;
1619 q->mem_ops = &vb2_dma_contig_memops;
1620 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1621 q->lock = &delta->lock;
1622 q->dev = delta->dev;
1623
1624 return vb2_queue_init(q);
1625}
1626
1627static int delta_open(struct file *file)
1628{
1629 struct delta_dev *delta = video_drvdata(file);
1630 struct delta_ctx *ctx = NULL;
1631 int ret = 0;
1632
1633 mutex_lock(&delta->lock);
1634
1635 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1636 if (!ctx) {
1637 ret = -ENOMEM;
1638 goto err;
1639 }
1640 ctx->dev = delta;
1641
1642 v4l2_fh_init(&ctx->fh, video_devdata(file));
1643 file->private_data = &ctx->fh;
1644 v4l2_fh_add(&ctx->fh);
1645
1646 INIT_WORK(&ctx->run_work, delta_run_work);
1647 mutex_init(&ctx->lock);
1648
1649 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(delta->m2m_dev, ctx,
1650 queue_init);
1651 if (IS_ERR(ctx->fh.m2m_ctx)) {
1652 ret = PTR_ERR(ctx->fh.m2m_ctx);
1653 dev_err(delta->dev, "%s failed to initialize m2m context (%d)\n",
1654 DELTA_PREFIX, ret);
1655 goto err_fh_del;
1656 }
1657
1658
1659
1660
1661
1662 ctx->state = DELTA_STATE_WF_FORMAT;
1663
1664 INIT_LIST_HEAD(&ctx->dts);
1665
1666
1667 delta->instance_id++;
1668 snprintf(ctx->name, sizeof(ctx->name), "[%3d:----]",
1669 delta->instance_id);
1670
1671
1672 set_default_params(ctx);
1673
1674
1675 if (delta->clk_st231)
1676 if (clk_prepare_enable(delta->clk_st231))
1677 dev_warn(delta->dev, "failed to enable st231 clk\n");
1678
1679
1680 if (delta->clk_flash_promip)
1681 if (clk_prepare_enable(delta->clk_flash_promip))
1682 dev_warn(delta->dev, "failed to enable delta promip clk\n");
1683
1684 mutex_unlock(&delta->lock);
1685
1686 dev_dbg(delta->dev, "%s decoder instance created\n", ctx->name);
1687
1688 return 0;
1689
1690err_fh_del:
1691 v4l2_fh_del(&ctx->fh);
1692 v4l2_fh_exit(&ctx->fh);
1693 kfree(ctx);
1694err:
1695 mutex_unlock(&delta->lock);
1696
1697 return ret;
1698}
1699
1700static int delta_release(struct file *file)
1701{
1702 struct delta_ctx *ctx = to_ctx(file->private_data);
1703 struct delta_dev *delta = ctx->dev;
1704 const struct delta_dec *dec = ctx->dec;
1705
1706 mutex_lock(&delta->lock);
1707
1708
1709 call_dec_op(dec, close, ctx);
1710
1711
1712
1713
1714
1715 delta_trace_summary(ctx);
1716
1717 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1718
1719 v4l2_fh_del(&ctx->fh);
1720 v4l2_fh_exit(&ctx->fh);
1721
1722
1723 if (delta->clk_st231)
1724 clk_disable_unprepare(delta->clk_st231);
1725
1726
1727 if (delta->clk_flash_promip)
1728 clk_disable_unprepare(delta->clk_flash_promip);
1729
1730 dev_dbg(delta->dev, "%s decoder instance released\n", ctx->name);
1731
1732 kfree(ctx);
1733
1734 mutex_unlock(&delta->lock);
1735 return 0;
1736}
1737
1738
1739static const struct v4l2_file_operations delta_fops = {
1740 .owner = THIS_MODULE,
1741 .open = delta_open,
1742 .release = delta_release,
1743 .unlocked_ioctl = video_ioctl2,
1744 .mmap = v4l2_m2m_fop_mmap,
1745 .poll = v4l2_m2m_fop_poll,
1746};
1747
1748
1749
1750
1751
1752static int delta_register_device(struct delta_dev *delta)
1753{
1754 int ret;
1755 struct video_device *vdev;
1756
1757 if (!delta)
1758 return -ENODEV;
1759
1760 delta->m2m_dev = v4l2_m2m_init(&delta_m2m_ops);
1761 if (IS_ERR(delta->m2m_dev)) {
1762 dev_err(delta->dev, "%s failed to initialize v4l2-m2m device\n",
1763 DELTA_PREFIX);
1764 ret = PTR_ERR(delta->m2m_dev);
1765 goto err;
1766 }
1767
1768 vdev = video_device_alloc();
1769 if (!vdev) {
1770 dev_err(delta->dev, "%s failed to allocate video device\n",
1771 DELTA_PREFIX);
1772 ret = -ENOMEM;
1773 goto err_m2m_release;
1774 }
1775
1776 vdev->fops = &delta_fops;
1777 vdev->ioctl_ops = &delta_ioctl_ops;
1778 vdev->release = video_device_release;
1779 vdev->lock = &delta->lock;
1780 vdev->vfl_dir = VFL_DIR_M2M;
1781 vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M;
1782 vdev->v4l2_dev = &delta->v4l2_dev;
1783 snprintf(vdev->name, sizeof(vdev->name), "%s-%s",
1784 DELTA_NAME, DELTA_FW_VERSION);
1785
1786 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1787 if (ret) {
1788 dev_err(delta->dev, "%s failed to register video device\n",
1789 DELTA_PREFIX);
1790 goto err_vdev_release;
1791 }
1792
1793 delta->vdev = vdev;
1794 video_set_drvdata(vdev, delta);
1795 return 0;
1796
1797err_vdev_release:
1798 video_device_release(vdev);
1799err_m2m_release:
1800 v4l2_m2m_release(delta->m2m_dev);
1801err:
1802 return ret;
1803}
1804
1805static void delta_unregister_device(struct delta_dev *delta)
1806{
1807 if (!delta)
1808 return;
1809
1810 if (delta->m2m_dev)
1811 v4l2_m2m_release(delta->m2m_dev);
1812
1813 video_unregister_device(delta->vdev);
1814}
1815
1816static int delta_probe(struct platform_device *pdev)
1817{
1818 struct delta_dev *delta;
1819 struct device *dev = &pdev->dev;
1820 int ret;
1821
1822 delta = devm_kzalloc(dev, sizeof(*delta), GFP_KERNEL);
1823 if (!delta) {
1824 ret = -ENOMEM;
1825 goto err;
1826 }
1827
1828 delta->dev = dev;
1829 delta->pdev = pdev;
1830 platform_set_drvdata(pdev, delta);
1831
1832 mutex_init(&delta->lock);
1833
1834
1835 delta->clk_delta = devm_clk_get(dev, "delta");
1836 if (IS_ERR(delta->clk_delta)) {
1837 dev_dbg(dev, "%s can't get delta clock\n", DELTA_PREFIX);
1838 delta->clk_delta = NULL;
1839 }
1840
1841 delta->clk_st231 = devm_clk_get(dev, "delta-st231");
1842 if (IS_ERR(delta->clk_st231)) {
1843 dev_dbg(dev, "%s can't get delta-st231 clock\n", DELTA_PREFIX);
1844 delta->clk_st231 = NULL;
1845 }
1846
1847 delta->clk_flash_promip = devm_clk_get(dev, "delta-flash-promip");
1848 if (IS_ERR(delta->clk_flash_promip)) {
1849 dev_dbg(dev, "%s can't get delta-flash-promip clock\n",
1850 DELTA_PREFIX);
1851 delta->clk_flash_promip = NULL;
1852 }
1853
1854
1855 pm_runtime_set_autosuspend_delay(dev, DELTA_HW_AUTOSUSPEND_DELAY_MS);
1856 pm_runtime_use_autosuspend(dev);
1857 pm_runtime_set_suspended(dev);
1858 pm_runtime_enable(dev);
1859
1860
1861 ret = delta_ipc_init(delta);
1862 if (ret) {
1863 dev_err(delta->dev, "%s failed to initialize firmware ipc channel\n",
1864 DELTA_PREFIX);
1865 goto err;
1866 }
1867
1868
1869 register_decoders(delta);
1870
1871
1872 register_formats(delta);
1873
1874
1875 ret = v4l2_device_register(dev, &delta->v4l2_dev);
1876 if (ret) {
1877 dev_err(delta->dev, "%s failed to register V4L2 device\n",
1878 DELTA_PREFIX);
1879 goto err;
1880 }
1881
1882 delta->work_queue = create_workqueue(DELTA_NAME);
1883 if (!delta->work_queue) {
1884 dev_err(delta->dev, "%s failed to allocate work queue\n",
1885 DELTA_PREFIX);
1886 ret = -ENOMEM;
1887 goto err_v4l2;
1888 }
1889
1890
1891 ret = delta_register_device(delta);
1892 if (ret)
1893 goto err_work_queue;
1894
1895 dev_info(dev, "%s %s registered as /dev/video%d\n",
1896 DELTA_PREFIX, delta->vdev->name, delta->vdev->num);
1897
1898 return 0;
1899
1900err_work_queue:
1901 destroy_workqueue(delta->work_queue);
1902err_v4l2:
1903 v4l2_device_unregister(&delta->v4l2_dev);
1904err:
1905 return ret;
1906}
1907
1908static int delta_remove(struct platform_device *pdev)
1909{
1910 struct delta_dev *delta = platform_get_drvdata(pdev);
1911
1912 delta_ipc_exit(delta);
1913
1914 delta_unregister_device(delta);
1915
1916 destroy_workqueue(delta->work_queue);
1917
1918 pm_runtime_put_autosuspend(delta->dev);
1919 pm_runtime_disable(delta->dev);
1920
1921 v4l2_device_unregister(&delta->v4l2_dev);
1922
1923 return 0;
1924}
1925
1926static int delta_runtime_suspend(struct device *dev)
1927{
1928 struct delta_dev *delta = dev_get_drvdata(dev);
1929
1930 if (delta->clk_delta)
1931 clk_disable_unprepare(delta->clk_delta);
1932
1933 return 0;
1934}
1935
1936static int delta_runtime_resume(struct device *dev)
1937{
1938 struct delta_dev *delta = dev_get_drvdata(dev);
1939
1940 if (delta->clk_delta)
1941 if (clk_prepare_enable(delta->clk_delta))
1942 dev_warn(dev, "failed to prepare/enable delta clk\n");
1943
1944 return 0;
1945}
1946
1947
1948static const struct dev_pm_ops delta_pm_ops = {
1949 .runtime_suspend = delta_runtime_suspend,
1950 .runtime_resume = delta_runtime_resume,
1951};
1952
1953static const struct of_device_id delta_match_types[] = {
1954 {
1955 .compatible = "st,st-delta",
1956 },
1957 {
1958
1959 }
1960};
1961
1962MODULE_DEVICE_TABLE(of, delta_match_types);
1963
1964static struct platform_driver delta_driver = {
1965 .probe = delta_probe,
1966 .remove = delta_remove,
1967 .driver = {
1968 .name = DELTA_NAME,
1969 .of_match_table = delta_match_types,
1970 .pm = &delta_pm_ops},
1971};
1972
1973module_platform_driver(delta_driver);
1974
1975MODULE_LICENSE("GPL");
1976MODULE_AUTHOR("Hugues Fruchet <hugues.fruchet@st.com>");
1977MODULE_DESCRIPTION("STMicroelectronics DELTA video decoder V4L2 driver");
1978
