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12#include <linux/ioctl.h>
13#include <linux/pm_runtime.h>
14#include <linux/videodev2.h>
15
16#include <media/media-device.h>
17#include <media/v4l2-common.h>
18#include <media/v4l2-ctrls.h>
19#include <media/v4l2-device.h>
20#include <media/v4l2-event.h>
21#include <media/v4l2-fh.h>
22#include <media/v4l2-ioctl.h>
23#include <media/videobuf2-core.h>
24#include <media/videobuf2-dma-contig.h>
25
26#include "cal.h"
27
28
29static char *fourcc_to_str(u32 fmt)
30{
31 static char code[5];
32
33 code[0] = (unsigned char)(fmt & 0xff);
34 code[1] = (unsigned char)((fmt >> 8) & 0xff);
35 code[2] = (unsigned char)((fmt >> 16) & 0xff);
36 code[3] = (unsigned char)((fmt >> 24) & 0xff);
37 code[4] = '\0';
38
39 return code;
40}
41
42
43
44
45
46
47static int cal_querycap(struct file *file, void *priv,
48 struct v4l2_capability *cap)
49{
50 struct cal_ctx *ctx = video_drvdata(file);
51
52 strscpy(cap->driver, CAL_MODULE_NAME, sizeof(cap->driver));
53 strscpy(cap->card, CAL_MODULE_NAME, sizeof(cap->card));
54
55 snprintf(cap->bus_info, sizeof(cap->bus_info),
56 "platform:%s", dev_name(ctx->cal->dev));
57 return 0;
58}
59
60static int cal_g_fmt_vid_cap(struct file *file, void *priv,
61 struct v4l2_format *f)
62{
63 struct cal_ctx *ctx = video_drvdata(file);
64
65 *f = ctx->v_fmt;
66
67 return 0;
68}
69
70
71
72
73
74
75static const struct cal_format_info *find_format_by_pix(struct cal_ctx *ctx,
76 u32 pixelformat)
77{
78 const struct cal_format_info *fmtinfo;
79 unsigned int k;
80
81 for (k = 0; k < ctx->num_active_fmt; k++) {
82 fmtinfo = ctx->active_fmt[k];
83 if (fmtinfo->fourcc == pixelformat)
84 return fmtinfo;
85 }
86
87 return NULL;
88}
89
90static const struct cal_format_info *find_format_by_code(struct cal_ctx *ctx,
91 u32 code)
92{
93 const struct cal_format_info *fmtinfo;
94 unsigned int k;
95
96 for (k = 0; k < ctx->num_active_fmt; k++) {
97 fmtinfo = ctx->active_fmt[k];
98 if (fmtinfo->code == code)
99 return fmtinfo;
100 }
101
102 return NULL;
103}
104
105static int cal_legacy_enum_fmt_vid_cap(struct file *file, void *priv,
106 struct v4l2_fmtdesc *f)
107{
108 struct cal_ctx *ctx = video_drvdata(file);
109 const struct cal_format_info *fmtinfo;
110
111 if (f->index >= ctx->num_active_fmt)
112 return -EINVAL;
113
114 fmtinfo = ctx->active_fmt[f->index];
115
116 f->pixelformat = fmtinfo->fourcc;
117 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
118 return 0;
119}
120
121static int __subdev_get_format(struct cal_ctx *ctx,
122 struct v4l2_mbus_framefmt *fmt)
123{
124 struct v4l2_subdev_format sd_fmt;
125 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
126 int ret;
127
128 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
129 sd_fmt.pad = 0;
130
131 ret = v4l2_subdev_call(ctx->phy->source, pad, get_fmt, NULL, &sd_fmt);
132 if (ret)
133 return ret;
134
135 *fmt = *mbus_fmt;
136
137 ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__,
138 fmt->width, fmt->height, fmt->code);
139
140 return 0;
141}
142
143static int __subdev_set_format(struct cal_ctx *ctx,
144 struct v4l2_mbus_framefmt *fmt)
145{
146 struct v4l2_subdev_format sd_fmt;
147 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
148 int ret;
149
150 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
151 sd_fmt.pad = 0;
152 *mbus_fmt = *fmt;
153
154 ret = v4l2_subdev_call(ctx->phy->source, pad, set_fmt, NULL, &sd_fmt);
155 if (ret)
156 return ret;
157
158 ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__,
159 fmt->width, fmt->height, fmt->code);
160
161 return 0;
162}
163
164static void cal_calc_format_size(struct cal_ctx *ctx,
165 const struct cal_format_info *fmtinfo,
166 struct v4l2_format *f)
167{
168 u32 bpl, max_width;
169
170
171
172
173
174
175 max_width = CAL_MAX_WIDTH_BYTES / (ALIGN(fmtinfo->bpp, 8) >> 3);
176 v4l_bound_align_image(&f->fmt.pix.width, 48, max_width, 2,
177 &f->fmt.pix.height, 32, CAL_MAX_HEIGHT_LINES,
178 0, 0);
179
180 bpl = (f->fmt.pix.width * ALIGN(fmtinfo->bpp, 8)) >> 3;
181 f->fmt.pix.bytesperline = ALIGN(bpl, 16);
182
183 f->fmt.pix.sizeimage = f->fmt.pix.height *
184 f->fmt.pix.bytesperline;
185
186 ctx_dbg(3, ctx, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",
187 __func__, fourcc_to_str(f->fmt.pix.pixelformat),
188 f->fmt.pix.width, f->fmt.pix.height,
189 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
190}
191
192static int cal_legacy_try_fmt_vid_cap(struct file *file, void *priv,
193 struct v4l2_format *f)
194{
195 struct cal_ctx *ctx = video_drvdata(file);
196 const struct cal_format_info *fmtinfo;
197 struct v4l2_subdev_frame_size_enum fse;
198 int ret, found;
199
200 fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
201 if (!fmtinfo) {
202 ctx_dbg(3, ctx, "Fourcc format (0x%08x) not found.\n",
203 f->fmt.pix.pixelformat);
204
205
206 fmtinfo = ctx->active_fmt[0];
207 f->fmt.pix.pixelformat = fmtinfo->fourcc;
208 }
209
210 f->fmt.pix.field = ctx->v_fmt.fmt.pix.field;
211
212
213 ret = 0;
214 found = false;
215 fse.pad = 0;
216 fse.code = fmtinfo->code;
217 fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
218 for (fse.index = 0; ; fse.index++) {
219 ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size,
220 NULL, &fse);
221 if (ret)
222 break;
223
224 if ((f->fmt.pix.width == fse.max_width) &&
225 (f->fmt.pix.height == fse.max_height)) {
226 found = true;
227 break;
228 } else if ((f->fmt.pix.width >= fse.min_width) &&
229 (f->fmt.pix.width <= fse.max_width) &&
230 (f->fmt.pix.height >= fse.min_height) &&
231 (f->fmt.pix.height <= fse.max_height)) {
232 found = true;
233 break;
234 }
235 }
236
237 if (!found) {
238
239 f->fmt.pix.width = ctx->v_fmt.fmt.pix.width;
240 f->fmt.pix.height = ctx->v_fmt.fmt.pix.height;
241 }
242
243
244
245
246
247 f->fmt.pix.colorspace = ctx->v_fmt.fmt.pix.colorspace;
248 cal_calc_format_size(ctx, fmtinfo, f);
249 return 0;
250}
251
252static int cal_legacy_s_fmt_vid_cap(struct file *file, void *priv,
253 struct v4l2_format *f)
254{
255 struct cal_ctx *ctx = video_drvdata(file);
256 struct vb2_queue *q = &ctx->vb_vidq;
257 struct v4l2_subdev_format sd_fmt = {
258 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
259 .pad = CAL_CAMERARX_PAD_SINK,
260 };
261 const struct cal_format_info *fmtinfo;
262 int ret;
263
264 if (vb2_is_busy(q)) {
265 ctx_dbg(3, ctx, "%s device busy\n", __func__);
266 return -EBUSY;
267 }
268
269 ret = cal_legacy_try_fmt_vid_cap(file, priv, f);
270 if (ret < 0)
271 return ret;
272
273 fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
274
275 v4l2_fill_mbus_format(&sd_fmt.format, &f->fmt.pix, fmtinfo->code);
276
277 ret = __subdev_set_format(ctx, &sd_fmt.format);
278 if (ret)
279 return ret;
280
281
282 if (sd_fmt.format.code != fmtinfo->code) {
283 ctx_dbg(3, ctx,
284 "%s subdev changed format on us, this should not happen\n",
285 __func__);
286 return -EINVAL;
287 }
288
289 v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &sd_fmt.format);
290 ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
291 ctx->v_fmt.fmt.pix.pixelformat = fmtinfo->fourcc;
292 ctx->v_fmt.fmt.pix.field = sd_fmt.format.field;
293 cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt);
294
295 v4l2_subdev_call(&ctx->phy->subdev, pad, set_fmt, NULL, &sd_fmt);
296
297 ctx->fmtinfo = fmtinfo;
298 *f = ctx->v_fmt;
299
300 return 0;
301}
302
303static int cal_legacy_enum_framesizes(struct file *file, void *fh,
304 struct v4l2_frmsizeenum *fsize)
305{
306 struct cal_ctx *ctx = video_drvdata(file);
307 const struct cal_format_info *fmtinfo;
308 struct v4l2_subdev_frame_size_enum fse;
309 int ret;
310
311
312 fmtinfo = find_format_by_pix(ctx, fsize->pixel_format);
313 if (!fmtinfo) {
314 ctx_dbg(3, ctx, "Invalid pixel code: %x\n",
315 fsize->pixel_format);
316 return -EINVAL;
317 }
318
319 fse.index = fsize->index;
320 fse.pad = 0;
321 fse.code = fmtinfo->code;
322 fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
323
324 ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size, NULL,
325 &fse);
326 if (ret)
327 return ret;
328
329 ctx_dbg(1, ctx, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
330 __func__, fse.index, fse.code, fse.min_width, fse.max_width,
331 fse.min_height, fse.max_height);
332
333 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
334 fsize->discrete.width = fse.max_width;
335 fsize->discrete.height = fse.max_height;
336
337 return 0;
338}
339
340static int cal_legacy_enum_input(struct file *file, void *priv,
341 struct v4l2_input *inp)
342{
343 if (inp->index > 0)
344 return -EINVAL;
345
346 inp->type = V4L2_INPUT_TYPE_CAMERA;
347 sprintf(inp->name, "Camera %u", inp->index);
348 return 0;
349}
350
351static int cal_legacy_g_input(struct file *file, void *priv, unsigned int *i)
352{
353 *i = 0;
354 return 0;
355}
356
357static int cal_legacy_s_input(struct file *file, void *priv, unsigned int i)
358{
359 return i > 0 ? -EINVAL : 0;
360}
361
362
363static int cal_legacy_enum_frameintervals(struct file *file, void *priv,
364 struct v4l2_frmivalenum *fival)
365{
366 struct cal_ctx *ctx = video_drvdata(file);
367 const struct cal_format_info *fmtinfo;
368 struct v4l2_subdev_frame_interval_enum fie = {
369 .index = fival->index,
370 .width = fival->width,
371 .height = fival->height,
372 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
373 };
374 int ret;
375
376 fmtinfo = find_format_by_pix(ctx, fival->pixel_format);
377 if (!fmtinfo)
378 return -EINVAL;
379
380 fie.code = fmtinfo->code;
381 ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_interval,
382 NULL, &fie);
383 if (ret)
384 return ret;
385 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
386 fival->discrete = fie.interval;
387
388 return 0;
389}
390
391static int cal_legacy_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
392{
393 struct cal_ctx *ctx = video_drvdata(file);
394
395 return v4l2_g_parm_cap(video_devdata(file), ctx->phy->source, a);
396}
397
398static int cal_legacy_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
399{
400 struct cal_ctx *ctx = video_drvdata(file);
401
402 return v4l2_s_parm_cap(video_devdata(file), ctx->phy->source, a);
403}
404
405static const struct v4l2_ioctl_ops cal_ioctl_legacy_ops = {
406 .vidioc_querycap = cal_querycap,
407 .vidioc_enum_fmt_vid_cap = cal_legacy_enum_fmt_vid_cap,
408 .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap,
409 .vidioc_try_fmt_vid_cap = cal_legacy_try_fmt_vid_cap,
410 .vidioc_s_fmt_vid_cap = cal_legacy_s_fmt_vid_cap,
411 .vidioc_enum_framesizes = cal_legacy_enum_framesizes,
412 .vidioc_reqbufs = vb2_ioctl_reqbufs,
413 .vidioc_create_bufs = vb2_ioctl_create_bufs,
414 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
415 .vidioc_querybuf = vb2_ioctl_querybuf,
416 .vidioc_qbuf = vb2_ioctl_qbuf,
417 .vidioc_dqbuf = vb2_ioctl_dqbuf,
418 .vidioc_expbuf = vb2_ioctl_expbuf,
419 .vidioc_enum_input = cal_legacy_enum_input,
420 .vidioc_g_input = cal_legacy_g_input,
421 .vidioc_s_input = cal_legacy_s_input,
422 .vidioc_enum_frameintervals = cal_legacy_enum_frameintervals,
423 .vidioc_streamon = vb2_ioctl_streamon,
424 .vidioc_streamoff = vb2_ioctl_streamoff,
425 .vidioc_log_status = v4l2_ctrl_log_status,
426 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
427 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
428 .vidioc_g_parm = cal_legacy_g_parm,
429 .vidioc_s_parm = cal_legacy_s_parm,
430};
431
432
433
434
435
436
437static int cal_mc_enum_fmt_vid_cap(struct file *file, void *priv,
438 struct v4l2_fmtdesc *f)
439{
440 unsigned int i;
441 unsigned int idx;
442
443 if (f->index >= cal_num_formats)
444 return -EINVAL;
445
446 idx = 0;
447
448 for (i = 0; i < cal_num_formats; ++i) {
449 if (f->mbus_code && cal_formats[i].code != f->mbus_code)
450 continue;
451
452 if (idx == f->index) {
453 f->pixelformat = cal_formats[i].fourcc;
454 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
455 return 0;
456 }
457
458 idx++;
459 }
460
461 return -EINVAL;
462}
463
464static void cal_mc_try_fmt(struct cal_ctx *ctx, struct v4l2_format *f,
465 const struct cal_format_info **info)
466{
467 struct v4l2_pix_format *format = &f->fmt.pix;
468 const struct cal_format_info *fmtinfo;
469 unsigned int bpp;
470
471
472
473
474
475 fmtinfo = cal_format_by_fourcc(f->fmt.pix.pixelformat);
476 if (!fmtinfo)
477 fmtinfo = &cal_formats[0];
478
479
480
481
482
483
484 bpp = ALIGN(fmtinfo->bpp, 8);
485
486 format->width = clamp_t(unsigned int, format->width,
487 CAL_MIN_WIDTH_BYTES * 8 / bpp,
488 CAL_MAX_WIDTH_BYTES * 8 / bpp);
489 format->height = clamp_t(unsigned int, format->height,
490 CAL_MIN_HEIGHT_LINES, CAL_MAX_HEIGHT_LINES);
491 format->pixelformat = fmtinfo->fourcc;
492
493 if (format->field == V4L2_FIELD_ANY)
494 format->field = V4L2_FIELD_NONE;
495
496
497
498
499
500
501 format->bytesperline = ALIGN(clamp(format->bytesperline,
502 format->width * bpp / 8,
503 ((1U << 14) - 1) * 16), 16);
504
505 format->sizeimage = format->height * format->bytesperline;
506
507 format->colorspace = ctx->v_fmt.fmt.pix.colorspace;
508
509 if (info)
510 *info = fmtinfo;
511
512 ctx_dbg(3, ctx, "%s: %s %ux%u (bytesperline %u sizeimage %u)\n",
513 __func__, fourcc_to_str(format->pixelformat),
514 format->width, format->height,
515 format->bytesperline, format->sizeimage);
516}
517
518static int cal_mc_try_fmt_vid_cap(struct file *file, void *priv,
519 struct v4l2_format *f)
520{
521 struct cal_ctx *ctx = video_drvdata(file);
522
523 cal_mc_try_fmt(ctx, f, NULL);
524 return 0;
525}
526
527static int cal_mc_s_fmt_vid_cap(struct file *file, void *priv,
528 struct v4l2_format *f)
529{
530 struct cal_ctx *ctx = video_drvdata(file);
531 const struct cal_format_info *fmtinfo;
532
533 if (vb2_is_busy(&ctx->vb_vidq)) {
534 ctx_dbg(3, ctx, "%s device busy\n", __func__);
535 return -EBUSY;
536 }
537
538 cal_mc_try_fmt(ctx, f, &fmtinfo);
539
540 ctx->v_fmt = *f;
541 ctx->fmtinfo = fmtinfo;
542
543 return 0;
544}
545
546static int cal_mc_enum_framesizes(struct file *file, void *fh,
547 struct v4l2_frmsizeenum *fsize)
548{
549 struct cal_ctx *ctx = video_drvdata(file);
550 const struct cal_format_info *fmtinfo;
551 unsigned int bpp;
552
553 if (fsize->index > 0)
554 return -EINVAL;
555
556 fmtinfo = cal_format_by_fourcc(fsize->pixel_format);
557 if (!fmtinfo) {
558 ctx_dbg(3, ctx, "Invalid pixel format 0x%08x\n",
559 fsize->pixel_format);
560 return -EINVAL;
561 }
562
563 bpp = ALIGN(fmtinfo->bpp, 8);
564
565 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
566 fsize->stepwise.min_width = CAL_MIN_WIDTH_BYTES * 8 / bpp;
567 fsize->stepwise.max_width = CAL_MAX_WIDTH_BYTES * 8 / bpp;
568 fsize->stepwise.step_width = 64 / bpp;
569 fsize->stepwise.min_height = CAL_MIN_HEIGHT_LINES;
570 fsize->stepwise.max_height = CAL_MAX_HEIGHT_LINES;
571 fsize->stepwise.step_height = 1;
572
573 return 0;
574}
575
576static const struct v4l2_ioctl_ops cal_ioctl_mc_ops = {
577 .vidioc_querycap = cal_querycap,
578 .vidioc_enum_fmt_vid_cap = cal_mc_enum_fmt_vid_cap,
579 .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap,
580 .vidioc_try_fmt_vid_cap = cal_mc_try_fmt_vid_cap,
581 .vidioc_s_fmt_vid_cap = cal_mc_s_fmt_vid_cap,
582 .vidioc_enum_framesizes = cal_mc_enum_framesizes,
583 .vidioc_reqbufs = vb2_ioctl_reqbufs,
584 .vidioc_create_bufs = vb2_ioctl_create_bufs,
585 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
586 .vidioc_querybuf = vb2_ioctl_querybuf,
587 .vidioc_qbuf = vb2_ioctl_qbuf,
588 .vidioc_dqbuf = vb2_ioctl_dqbuf,
589 .vidioc_expbuf = vb2_ioctl_expbuf,
590 .vidioc_streamon = vb2_ioctl_streamon,
591 .vidioc_streamoff = vb2_ioctl_streamoff,
592 .vidioc_log_status = v4l2_ctrl_log_status,
593};
594
595
596
597
598
599
600static int cal_queue_setup(struct vb2_queue *vq,
601 unsigned int *nbuffers, unsigned int *nplanes,
602 unsigned int sizes[], struct device *alloc_devs[])
603{
604 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
605 unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
606
607 if (vq->num_buffers + *nbuffers < 3)
608 *nbuffers = 3 - vq->num_buffers;
609
610 if (*nplanes) {
611 if (sizes[0] < size)
612 return -EINVAL;
613 size = sizes[0];
614 }
615
616 *nplanes = 1;
617 sizes[0] = size;
618
619 ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", *nbuffers, sizes[0]);
620
621 return 0;
622}
623
624static int cal_buffer_prepare(struct vb2_buffer *vb)
625{
626 struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
627 struct cal_buffer *buf = container_of(vb, struct cal_buffer,
628 vb.vb2_buf);
629 unsigned long size;
630
631 size = ctx->v_fmt.fmt.pix.sizeimage;
632 if (vb2_plane_size(vb, 0) < size) {
633 ctx_err(ctx,
634 "data will not fit into plane (%lu < %lu)\n",
635 vb2_plane_size(vb, 0), size);
636 return -EINVAL;
637 }
638
639 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
640 return 0;
641}
642
643static void cal_buffer_queue(struct vb2_buffer *vb)
644{
645 struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
646 struct cal_buffer *buf = container_of(vb, struct cal_buffer,
647 vb.vb2_buf);
648 unsigned long flags;
649
650
651 spin_lock_irqsave(&ctx->dma.lock, flags);
652 list_add_tail(&buf->list, &ctx->dma.queue);
653 spin_unlock_irqrestore(&ctx->dma.lock, flags);
654}
655
656static void cal_release_buffers(struct cal_ctx *ctx,
657 enum vb2_buffer_state state)
658{
659 struct cal_buffer *buf, *tmp;
660
661
662 spin_lock_irq(&ctx->dma.lock);
663
664 list_for_each_entry_safe(buf, tmp, &ctx->dma.queue, list) {
665 list_del(&buf->list);
666 vb2_buffer_done(&buf->vb.vb2_buf, state);
667 }
668
669 if (ctx->dma.pending) {
670 vb2_buffer_done(&ctx->dma.pending->vb.vb2_buf, state);
671 ctx->dma.pending = NULL;
672 }
673
674 if (ctx->dma.active) {
675 vb2_buffer_done(&ctx->dma.active->vb.vb2_buf, state);
676 ctx->dma.active = NULL;
677 }
678
679 spin_unlock_irq(&ctx->dma.lock);
680}
681
682
683
684
685
686
687static int cal_video_check_format(struct cal_ctx *ctx)
688{
689 const struct v4l2_mbus_framefmt *format;
690 struct media_pad *remote_pad;
691
692 remote_pad = media_entity_remote_pad(&ctx->pad);
693 if (!remote_pad)
694 return -ENODEV;
695
696 format = &ctx->phy->formats[remote_pad->index];
697
698 if (ctx->fmtinfo->code != format->code ||
699 ctx->v_fmt.fmt.pix.height != format->height ||
700 ctx->v_fmt.fmt.pix.width != format->width ||
701 ctx->v_fmt.fmt.pix.field != format->field)
702 return -EPIPE;
703
704 return 0;
705}
706
707static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
708{
709 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
710 struct cal_buffer *buf;
711 dma_addr_t addr;
712 int ret;
713
714 ret = media_pipeline_start(&ctx->vdev.entity, &ctx->phy->pipe);
715 if (ret < 0) {
716 ctx_err(ctx, "Failed to start media pipeline: %d\n", ret);
717 goto error_release_buffers;
718 }
719
720
721
722
723
724 ret = cal_video_check_format(ctx);
725 if (ret < 0) {
726 ctx_dbg(3, ctx,
727 "Format mismatch between CAMERARX and video node\n");
728 goto error_pipeline;
729 }
730
731 ret = cal_ctx_prepare(ctx);
732 if (ret) {
733 ctx_err(ctx, "Failed to prepare context: %d\n", ret);
734 goto error_pipeline;
735 }
736
737 spin_lock_irq(&ctx->dma.lock);
738 buf = list_first_entry(&ctx->dma.queue, struct cal_buffer, list);
739 ctx->dma.active = buf;
740 list_del(&buf->list);
741 spin_unlock_irq(&ctx->dma.lock);
742
743 addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
744
745 ret = pm_runtime_resume_and_get(ctx->cal->dev);
746 if (ret < 0)
747 goto error_pipeline;
748
749 cal_ctx_set_dma_addr(ctx, addr);
750 cal_ctx_start(ctx);
751
752 ret = v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 1);
753 if (ret)
754 goto error_stop;
755
756 if (cal_debug >= 4)
757 cal_quickdump_regs(ctx->cal);
758
759 return 0;
760
761error_stop:
762 cal_ctx_stop(ctx);
763 pm_runtime_put_sync(ctx->cal->dev);
764 cal_ctx_unprepare(ctx);
765
766error_pipeline:
767 media_pipeline_stop(&ctx->vdev.entity);
768error_release_buffers:
769 cal_release_buffers(ctx, VB2_BUF_STATE_QUEUED);
770
771 return ret;
772}
773
774static void cal_stop_streaming(struct vb2_queue *vq)
775{
776 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
777
778 cal_ctx_stop(ctx);
779
780 v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 0);
781
782 pm_runtime_put_sync(ctx->cal->dev);
783
784 cal_ctx_unprepare(ctx);
785
786 cal_release_buffers(ctx, VB2_BUF_STATE_ERROR);
787
788 media_pipeline_stop(&ctx->vdev.entity);
789}
790
791static const struct vb2_ops cal_video_qops = {
792 .queue_setup = cal_queue_setup,
793 .buf_prepare = cal_buffer_prepare,
794 .buf_queue = cal_buffer_queue,
795 .start_streaming = cal_start_streaming,
796 .stop_streaming = cal_stop_streaming,
797 .wait_prepare = vb2_ops_wait_prepare,
798 .wait_finish = vb2_ops_wait_finish,
799};
800
801
802
803
804
805
806static const struct v4l2_file_operations cal_fops = {
807 .owner = THIS_MODULE,
808 .open = v4l2_fh_open,
809 .release = vb2_fop_release,
810 .poll = vb2_fop_poll,
811 .unlocked_ioctl = video_ioctl2,
812 .mmap = vb2_fop_mmap,
813};
814
815static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx)
816{
817 struct v4l2_subdev_mbus_code_enum mbus_code;
818 struct v4l2_mbus_framefmt mbus_fmt;
819 const struct cal_format_info *fmtinfo;
820 unsigned int i, j, k;
821 int ret = 0;
822
823
824 ctx->active_fmt = devm_kcalloc(ctx->cal->dev, cal_num_formats,
825 sizeof(*ctx->active_fmt), GFP_KERNEL);
826 ctx->num_active_fmt = 0;
827
828 for (j = 0, i = 0; ; ++j) {
829
830 memset(&mbus_code, 0, sizeof(mbus_code));
831 mbus_code.index = j;
832 mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
833 ret = v4l2_subdev_call(ctx->phy->source, pad, enum_mbus_code,
834 NULL, &mbus_code);
835 if (ret == -EINVAL)
836 break;
837
838 if (ret) {
839 ctx_err(ctx, "Error enumerating mbus codes in subdev %s: %d\n",
840 ctx->phy->source->name, ret);
841 return ret;
842 }
843
844 ctx_dbg(2, ctx,
845 "subdev %s: code: %04x idx: %u\n",
846 ctx->phy->source->name, mbus_code.code, j);
847
848 for (k = 0; k < cal_num_formats; k++) {
849 fmtinfo = &cal_formats[k];
850
851 if (mbus_code.code == fmtinfo->code) {
852 ctx->active_fmt[i] = fmtinfo;
853 ctx_dbg(2, ctx,
854 "matched fourcc: %s: code: %04x idx: %u\n",
855 fourcc_to_str(fmtinfo->fourcc),
856 fmtinfo->code, i);
857 ctx->num_active_fmt = ++i;
858 }
859 }
860 }
861
862 if (i == 0) {
863 ctx_err(ctx, "No suitable format reported by subdev %s\n",
864 ctx->phy->source->name);
865 return -EINVAL;
866 }
867
868 ret = __subdev_get_format(ctx, &mbus_fmt);
869 if (ret)
870 return ret;
871
872 fmtinfo = find_format_by_code(ctx, mbus_fmt.code);
873 if (!fmtinfo) {
874 ctx_dbg(3, ctx, "mbus code format (0x%08x) not found.\n",
875 mbus_fmt.code);
876 return -EINVAL;
877 }
878
879
880 v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
881 ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
882 ctx->v_fmt.fmt.pix.pixelformat = fmtinfo->fourcc;
883 cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt);
884 ctx->fmtinfo = fmtinfo;
885
886 return 0;
887}
888
889static int cal_ctx_v4l2_init_mc_format(struct cal_ctx *ctx)
890{
891 const struct cal_format_info *fmtinfo;
892 struct v4l2_pix_format *pix_fmt = &ctx->v_fmt.fmt.pix;
893
894 fmtinfo = cal_format_by_code(MEDIA_BUS_FMT_UYVY8_2X8);
895 if (!fmtinfo)
896 return -EINVAL;
897
898 pix_fmt->width = 640;
899 pix_fmt->height = 480;
900 pix_fmt->field = V4L2_FIELD_NONE;
901 pix_fmt->colorspace = V4L2_COLORSPACE_SRGB;
902 pix_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
903 pix_fmt->quantization = V4L2_QUANTIZATION_LIM_RANGE;
904 pix_fmt->xfer_func = V4L2_XFER_FUNC_SRGB;
905 pix_fmt->pixelformat = fmtinfo->fourcc;
906
907 ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
908
909
910 cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt);
911 ctx->fmtinfo = fmtinfo;
912
913 return 0;
914}
915
916int cal_ctx_v4l2_register(struct cal_ctx *ctx)
917{
918 struct video_device *vfd = &ctx->vdev;
919 int ret;
920
921 if (!cal_mc_api) {
922 struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
923
924 ret = cal_ctx_v4l2_init_formats(ctx);
925 if (ret) {
926 ctx_err(ctx, "Failed to init formats: %d\n", ret);
927 return ret;
928 }
929
930 ret = v4l2_ctrl_add_handler(hdl, ctx->phy->source->ctrl_handler,
931 NULL, true);
932 if (ret < 0) {
933 ctx_err(ctx, "Failed to add source ctrl handler\n");
934 return ret;
935 }
936 } else {
937 ret = cal_ctx_v4l2_init_mc_format(ctx);
938 if (ret) {
939 ctx_err(ctx, "Failed to init format: %d\n", ret);
940 return ret;
941 }
942 }
943
944 ret = video_register_device(vfd, VFL_TYPE_VIDEO, cal_video_nr);
945 if (ret < 0) {
946 ctx_err(ctx, "Failed to register video device\n");
947 return ret;
948 }
949
950 ret = media_create_pad_link(&ctx->phy->subdev.entity,
951 CAL_CAMERARX_PAD_FIRST_SOURCE,
952 &vfd->entity, 0,
953 MEDIA_LNK_FL_IMMUTABLE |
954 MEDIA_LNK_FL_ENABLED);
955 if (ret) {
956 ctx_err(ctx, "Failed to create media link for context %u\n",
957 ctx->dma_ctx);
958 video_unregister_device(vfd);
959 return ret;
960 }
961
962 ctx_info(ctx, "V4L2 device registered as %s\n",
963 video_device_node_name(vfd));
964
965 return 0;
966}
967
968void cal_ctx_v4l2_unregister(struct cal_ctx *ctx)
969{
970 ctx_dbg(1, ctx, "unregistering %s\n",
971 video_device_node_name(&ctx->vdev));
972
973 video_unregister_device(&ctx->vdev);
974}
975
976int cal_ctx_v4l2_init(struct cal_ctx *ctx)
977{
978 struct video_device *vfd = &ctx->vdev;
979 struct vb2_queue *q = &ctx->vb_vidq;
980 int ret;
981
982 INIT_LIST_HEAD(&ctx->dma.queue);
983 spin_lock_init(&ctx->dma.lock);
984 mutex_init(&ctx->mutex);
985 init_waitqueue_head(&ctx->dma.wait);
986
987
988 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
989 q->io_modes = VB2_MMAP | VB2_DMABUF;
990 q->drv_priv = ctx;
991 q->buf_struct_size = sizeof(struct cal_buffer);
992 q->ops = &cal_video_qops;
993 q->mem_ops = &vb2_dma_contig_memops;
994 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
995 q->lock = &ctx->mutex;
996 q->min_buffers_needed = 3;
997 q->dev = ctx->cal->dev;
998
999 ret = vb2_queue_init(q);
1000 if (ret)
1001 return ret;
1002
1003
1004 vfd->fops = &cal_fops;
1005 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING
1006 | (cal_mc_api ? V4L2_CAP_IO_MC : 0);
1007 vfd->v4l2_dev = &ctx->cal->v4l2_dev;
1008 vfd->queue = q;
1009 snprintf(vfd->name, sizeof(vfd->name), "CAL output %u", ctx->dma_ctx);
1010 vfd->release = video_device_release_empty;
1011 vfd->ioctl_ops = cal_mc_api ? &cal_ioctl_mc_ops : &cal_ioctl_legacy_ops;
1012 vfd->lock = &ctx->mutex;
1013 video_set_drvdata(vfd, ctx);
1014
1015 ctx->pad.flags = MEDIA_PAD_FL_SINK;
1016 ret = media_entity_pads_init(&vfd->entity, 1, &ctx->pad);
1017 if (ret < 0)
1018 return ret;
1019
1020 if (!cal_mc_api) {
1021
1022 struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
1023
1024 ret = v4l2_ctrl_handler_init(hdl, 11);
1025 if (ret < 0) {
1026 ctx_err(ctx, "Failed to init ctrl handler\n");
1027 goto error;
1028 }
1029
1030 vfd->ctrl_handler = hdl;
1031 }
1032
1033 return 0;
1034
1035error:
1036 media_entity_cleanup(&vfd->entity);
1037 return ret;
1038}
1039
1040void cal_ctx_v4l2_cleanup(struct cal_ctx *ctx)
1041{
1042 if (!cal_mc_api)
1043 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
1044
1045 media_entity_cleanup(&ctx->vdev.entity);
1046}
1047
