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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_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->sensor, 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->sensor, 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_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->sensor, 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_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_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_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->sensor, 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_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_g_input(struct file *file, void *priv, unsigned int *i)
352{
353 *i = 0;
354 return 0;
355}
356
357static int cal_s_input(struct file *file, void *priv, unsigned int i)
358{
359 return i > 0 ? -EINVAL : 0;
360}
361
362
363static int cal_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->sensor, 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 const struct v4l2_ioctl_ops cal_ioctl_video_ops = {
392 .vidioc_querycap = cal_querycap,
393 .vidioc_enum_fmt_vid_cap = cal_enum_fmt_vid_cap,
394 .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap,
395 .vidioc_try_fmt_vid_cap = cal_try_fmt_vid_cap,
396 .vidioc_s_fmt_vid_cap = cal_s_fmt_vid_cap,
397 .vidioc_enum_framesizes = cal_enum_framesizes,
398 .vidioc_reqbufs = vb2_ioctl_reqbufs,
399 .vidioc_create_bufs = vb2_ioctl_create_bufs,
400 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
401 .vidioc_querybuf = vb2_ioctl_querybuf,
402 .vidioc_qbuf = vb2_ioctl_qbuf,
403 .vidioc_dqbuf = vb2_ioctl_dqbuf,
404 .vidioc_expbuf = vb2_ioctl_expbuf,
405 .vidioc_enum_input = cal_enum_input,
406 .vidioc_g_input = cal_g_input,
407 .vidioc_s_input = cal_s_input,
408 .vidioc_enum_frameintervals = cal_enum_frameintervals,
409 .vidioc_streamon = vb2_ioctl_streamon,
410 .vidioc_streamoff = vb2_ioctl_streamoff,
411 .vidioc_log_status = v4l2_ctrl_log_status,
412 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
413 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
414};
415
416
417
418
419
420
421static int cal_mc_enum_fmt_vid_cap(struct file *file, void *priv,
422 struct v4l2_fmtdesc *f)
423{
424 if (f->index >= cal_num_formats)
425 return -EINVAL;
426
427 f->pixelformat = cal_formats[f->index].fourcc;
428 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
429
430 return 0;
431}
432
433static void cal_mc_try_fmt(struct cal_ctx *ctx, struct v4l2_format *f,
434 const struct cal_format_info **info)
435{
436 struct v4l2_pix_format *format = &f->fmt.pix;
437 const struct cal_format_info *fmtinfo;
438 unsigned int bpp;
439
440
441
442
443
444 fmtinfo = cal_format_by_fourcc(f->fmt.pix.pixelformat);
445 if (!fmtinfo)
446 fmtinfo = &cal_formats[0];
447
448
449
450
451
452
453 bpp = ALIGN(fmtinfo->bpp, 8);
454
455 format->width = clamp_t(unsigned int, format->width,
456 CAL_MIN_WIDTH_BYTES * 8 / bpp,
457 CAL_MAX_WIDTH_BYTES * 8 / bpp);
458 format->height = clamp_t(unsigned int, format->height,
459 CAL_MIN_HEIGHT_LINES, CAL_MAX_HEIGHT_LINES);
460 format->pixelformat = fmtinfo->fourcc;
461
462 if (format->field == V4L2_FIELD_ANY)
463 format->field = V4L2_FIELD_NONE;
464
465
466
467
468
469
470 format->bytesperline = ALIGN(clamp(format->bytesperline,
471 format->width * bpp / 8,
472 ((1U << 14) - 1) * 16), 16);
473
474 format->sizeimage = format->height * format->bytesperline;
475
476 format->colorspace = ctx->v_fmt.fmt.pix.colorspace;
477
478 if (info)
479 *info = fmtinfo;
480
481 ctx_dbg(3, ctx, "%s: %s %ux%u (bytesperline %u sizeimage %u)\n",
482 __func__, fourcc_to_str(format->pixelformat),
483 format->width, format->height,
484 format->bytesperline, format->sizeimage);
485}
486
487static int cal_mc_try_fmt_vid_cap(struct file *file, void *priv,
488 struct v4l2_format *f)
489{
490 struct cal_ctx *ctx = video_drvdata(file);
491
492 cal_mc_try_fmt(ctx, f, NULL);
493 return 0;
494}
495
496static int cal_mc_s_fmt_vid_cap(struct file *file, void *priv,
497 struct v4l2_format *f)
498{
499 struct cal_ctx *ctx = video_drvdata(file);
500 const struct cal_format_info *fmtinfo;
501
502 if (vb2_is_busy(&ctx->vb_vidq)) {
503 ctx_dbg(3, ctx, "%s device busy\n", __func__);
504 return -EBUSY;
505 }
506
507 cal_mc_try_fmt(ctx, f, &fmtinfo);
508
509 ctx->v_fmt = *f;
510 ctx->fmtinfo = fmtinfo;
511
512 return 0;
513}
514
515static int cal_mc_enum_framesizes(struct file *file, void *fh,
516 struct v4l2_frmsizeenum *fsize)
517{
518 struct cal_ctx *ctx = video_drvdata(file);
519 const struct cal_format_info *fmtinfo;
520 unsigned int bpp;
521
522 if (fsize->index > 0)
523 return -EINVAL;
524
525 fmtinfo = cal_format_by_fourcc(fsize->pixel_format);
526 if (!fmtinfo) {
527 ctx_dbg(3, ctx, "Invalid pixel format 0x%08x\n",
528 fsize->pixel_format);
529 return -EINVAL;
530 }
531
532 bpp = ALIGN(fmtinfo->bpp, 8);
533
534 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
535 fsize->stepwise.min_width = CAL_MIN_WIDTH_BYTES * 8 / bpp;
536 fsize->stepwise.max_width = CAL_MAX_WIDTH_BYTES * 8 / bpp;
537 fsize->stepwise.step_width = 64 / bpp;
538 fsize->stepwise.min_height = CAL_MIN_HEIGHT_LINES;
539 fsize->stepwise.max_height = CAL_MAX_HEIGHT_LINES;
540 fsize->stepwise.step_height = 1;
541
542 return 0;
543}
544
545static const struct v4l2_ioctl_ops cal_ioctl_mc_ops = {
546 .vidioc_querycap = cal_querycap,
547 .vidioc_enum_fmt_vid_cap = cal_mc_enum_fmt_vid_cap,
548 .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap,
549 .vidioc_try_fmt_vid_cap = cal_mc_try_fmt_vid_cap,
550 .vidioc_s_fmt_vid_cap = cal_mc_s_fmt_vid_cap,
551 .vidioc_enum_framesizes = cal_mc_enum_framesizes,
552 .vidioc_reqbufs = vb2_ioctl_reqbufs,
553 .vidioc_create_bufs = vb2_ioctl_create_bufs,
554 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
555 .vidioc_querybuf = vb2_ioctl_querybuf,
556 .vidioc_qbuf = vb2_ioctl_qbuf,
557 .vidioc_dqbuf = vb2_ioctl_dqbuf,
558 .vidioc_expbuf = vb2_ioctl_expbuf,
559 .vidioc_streamon = vb2_ioctl_streamon,
560 .vidioc_streamoff = vb2_ioctl_streamoff,
561 .vidioc_log_status = v4l2_ctrl_log_status,
562};
563
564
565
566
567
568
569static int cal_queue_setup(struct vb2_queue *vq,
570 unsigned int *nbuffers, unsigned int *nplanes,
571 unsigned int sizes[], struct device *alloc_devs[])
572{
573 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
574 unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
575
576 if (vq->num_buffers + *nbuffers < 3)
577 *nbuffers = 3 - vq->num_buffers;
578
579 if (*nplanes) {
580 if (sizes[0] < size)
581 return -EINVAL;
582 size = sizes[0];
583 }
584
585 *nplanes = 1;
586 sizes[0] = size;
587
588 ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", *nbuffers, sizes[0]);
589
590 return 0;
591}
592
593static int cal_buffer_prepare(struct vb2_buffer *vb)
594{
595 struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
596 struct cal_buffer *buf = container_of(vb, struct cal_buffer,
597 vb.vb2_buf);
598 unsigned long size;
599
600 size = ctx->v_fmt.fmt.pix.sizeimage;
601 if (vb2_plane_size(vb, 0) < size) {
602 ctx_err(ctx,
603 "data will not fit into plane (%lu < %lu)\n",
604 vb2_plane_size(vb, 0), size);
605 return -EINVAL;
606 }
607
608 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
609 return 0;
610}
611
612static void cal_buffer_queue(struct vb2_buffer *vb)
613{
614 struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
615 struct cal_buffer *buf = container_of(vb, struct cal_buffer,
616 vb.vb2_buf);
617 unsigned long flags;
618
619
620 spin_lock_irqsave(&ctx->dma.lock, flags);
621 list_add_tail(&buf->list, &ctx->dma.queue);
622 spin_unlock_irqrestore(&ctx->dma.lock, flags);
623}
624
625static void cal_release_buffers(struct cal_ctx *ctx,
626 enum vb2_buffer_state state)
627{
628 struct cal_buffer *buf, *tmp;
629
630
631 spin_lock_irq(&ctx->dma.lock);
632
633 list_for_each_entry_safe(buf, tmp, &ctx->dma.queue, list) {
634 list_del(&buf->list);
635 vb2_buffer_done(&buf->vb.vb2_buf, state);
636 }
637
638 if (ctx->dma.pending) {
639 vb2_buffer_done(&ctx->dma.pending->vb.vb2_buf, state);
640 ctx->dma.pending = NULL;
641 }
642
643 if (ctx->dma.active) {
644 vb2_buffer_done(&ctx->dma.active->vb.vb2_buf, state);
645 ctx->dma.active = NULL;
646 }
647
648 spin_unlock_irq(&ctx->dma.lock);
649}
650
651
652
653
654
655
656static int cal_video_check_format(struct cal_ctx *ctx)
657{
658 const struct v4l2_mbus_framefmt *format;
659
660 format = &ctx->phy->formats[CAL_CAMERARX_PAD_SOURCE];
661
662 if (ctx->fmtinfo->code != format->code ||
663 ctx->v_fmt.fmt.pix.height != format->height ||
664 ctx->v_fmt.fmt.pix.width != format->width ||
665 ctx->v_fmt.fmt.pix.field != format->field)
666 return -EPIPE;
667
668 return 0;
669}
670
671static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
672{
673 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
674 struct cal_buffer *buf;
675 dma_addr_t addr;
676 int ret;
677
678 ret = media_pipeline_start(&ctx->vdev.entity, &ctx->phy->pipe);
679 if (ret < 0) {
680 ctx_err(ctx, "Failed to start media pipeline: %d\n", ret);
681 goto error_release_buffers;
682 }
683
684
685
686
687
688 ret = cal_video_check_format(ctx);
689 if (ret < 0) {
690 ctx_dbg(3, ctx,
691 "Format mismatch between CAMERARX and video node\n");
692 goto error_pipeline;
693 }
694
695 spin_lock_irq(&ctx->dma.lock);
696 buf = list_first_entry(&ctx->dma.queue, struct cal_buffer, list);
697 ctx->dma.pending = buf;
698 list_del(&buf->list);
699 spin_unlock_irq(&ctx->dma.lock);
700
701 addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
702
703 ret = pm_runtime_resume_and_get(ctx->cal->dev);
704 if (ret < 0)
705 goto error_pipeline;
706
707 cal_ctx_set_dma_addr(ctx, addr);
708 cal_ctx_start(ctx);
709
710 ret = v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 1);
711 if (ret)
712 goto error_stop;
713
714 if (cal_debug >= 4)
715 cal_quickdump_regs(ctx->cal);
716
717 return 0;
718
719error_stop:
720 cal_ctx_stop(ctx);
721 pm_runtime_put_sync(ctx->cal->dev);
722
723error_pipeline:
724 media_pipeline_stop(&ctx->vdev.entity);
725error_release_buffers:
726 cal_release_buffers(ctx, VB2_BUF_STATE_QUEUED);
727
728 return ret;
729}
730
731static void cal_stop_streaming(struct vb2_queue *vq)
732{
733 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
734
735 cal_ctx_stop(ctx);
736
737 v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 0);
738
739 pm_runtime_put_sync(ctx->cal->dev);
740
741 cal_release_buffers(ctx, VB2_BUF_STATE_ERROR);
742
743 media_pipeline_stop(&ctx->vdev.entity);
744}
745
746static const struct vb2_ops cal_video_qops = {
747 .queue_setup = cal_queue_setup,
748 .buf_prepare = cal_buffer_prepare,
749 .buf_queue = cal_buffer_queue,
750 .start_streaming = cal_start_streaming,
751 .stop_streaming = cal_stop_streaming,
752 .wait_prepare = vb2_ops_wait_prepare,
753 .wait_finish = vb2_ops_wait_finish,
754};
755
756
757
758
759
760
761static const struct v4l2_file_operations cal_fops = {
762 .owner = THIS_MODULE,
763 .open = v4l2_fh_open,
764 .release = vb2_fop_release,
765 .poll = vb2_fop_poll,
766 .unlocked_ioctl = video_ioctl2,
767 .mmap = vb2_fop_mmap,
768};
769
770static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx)
771{
772 struct v4l2_subdev_mbus_code_enum mbus_code;
773 struct v4l2_mbus_framefmt mbus_fmt;
774 const struct cal_format_info *fmtinfo;
775 unsigned int i, j, k;
776 int ret = 0;
777
778
779 ctx->active_fmt = devm_kcalloc(ctx->cal->dev, cal_num_formats,
780 sizeof(*ctx->active_fmt), GFP_KERNEL);
781 ctx->num_active_fmt = 0;
782
783 for (j = 0, i = 0; ; ++j) {
784
785 memset(&mbus_code, 0, sizeof(mbus_code));
786 mbus_code.index = j;
787 mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
788 ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_mbus_code,
789 NULL, &mbus_code);
790 if (ret == -EINVAL)
791 break;
792
793 if (ret) {
794 ctx_err(ctx, "Error enumerating mbus codes in subdev %s: %d\n",
795 ctx->phy->sensor->name, ret);
796 return ret;
797 }
798
799 ctx_dbg(2, ctx,
800 "subdev %s: code: %04x idx: %u\n",
801 ctx->phy->sensor->name, mbus_code.code, j);
802
803 for (k = 0; k < cal_num_formats; k++) {
804 fmtinfo = &cal_formats[k];
805
806 if (mbus_code.code == fmtinfo->code) {
807 ctx->active_fmt[i] = fmtinfo;
808 ctx_dbg(2, ctx,
809 "matched fourcc: %s: code: %04x idx: %u\n",
810 fourcc_to_str(fmtinfo->fourcc),
811 fmtinfo->code, i);
812 ctx->num_active_fmt = ++i;
813 }
814 }
815 }
816
817 if (i == 0) {
818 ctx_err(ctx, "No suitable format reported by subdev %s\n",
819 ctx->phy->sensor->name);
820 return -EINVAL;
821 }
822
823 ret = __subdev_get_format(ctx, &mbus_fmt);
824 if (ret)
825 return ret;
826
827 fmtinfo = find_format_by_code(ctx, mbus_fmt.code);
828 if (!fmtinfo) {
829 ctx_dbg(3, ctx, "mbus code format (0x%08x) not found.\n",
830 mbus_fmt.code);
831 return -EINVAL;
832 }
833
834
835 v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
836 ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
837 ctx->v_fmt.fmt.pix.pixelformat = fmtinfo->fourcc;
838 cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt);
839 ctx->fmtinfo = fmtinfo;
840
841 return 0;
842}
843
844int cal_ctx_v4l2_register(struct cal_ctx *ctx)
845{
846 struct video_device *vfd = &ctx->vdev;
847 int ret;
848
849 ret = cal_ctx_v4l2_init_formats(ctx);
850 if (ret)
851 return ret;
852
853 if (!cal_mc_api) {
854 struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
855
856 ret = v4l2_ctrl_add_handler(hdl, ctx->phy->sensor->ctrl_handler,
857 NULL, true);
858 if (ret < 0) {
859 ctx_err(ctx, "Failed to add sensor ctrl handler\n");
860 return ret;
861 }
862 }
863
864 ret = video_register_device(vfd, VFL_TYPE_VIDEO, cal_video_nr);
865 if (ret < 0) {
866 ctx_err(ctx, "Failed to register video device\n");
867 return ret;
868 }
869
870 ret = media_create_pad_link(&ctx->phy->subdev.entity,
871 CAL_CAMERARX_PAD_SOURCE,
872 &vfd->entity, 0,
873 MEDIA_LNK_FL_IMMUTABLE |
874 MEDIA_LNK_FL_ENABLED);
875 if (ret) {
876 ctx_err(ctx, "Failed to create media link for context %u\n",
877 ctx->index);
878 video_unregister_device(vfd);
879 return ret;
880 }
881
882 ctx_info(ctx, "V4L2 device registered as %s\n",
883 video_device_node_name(vfd));
884
885 return 0;
886}
887
888void cal_ctx_v4l2_unregister(struct cal_ctx *ctx)
889{
890 ctx_dbg(1, ctx, "unregistering %s\n",
891 video_device_node_name(&ctx->vdev));
892
893 video_unregister_device(&ctx->vdev);
894}
895
896int cal_ctx_v4l2_init(struct cal_ctx *ctx)
897{
898 struct video_device *vfd = &ctx->vdev;
899 struct vb2_queue *q = &ctx->vb_vidq;
900 int ret;
901
902 INIT_LIST_HEAD(&ctx->dma.queue);
903 spin_lock_init(&ctx->dma.lock);
904 mutex_init(&ctx->mutex);
905 init_waitqueue_head(&ctx->dma.wait);
906
907
908 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
909 q->io_modes = VB2_MMAP | VB2_DMABUF;
910 q->drv_priv = ctx;
911 q->buf_struct_size = sizeof(struct cal_buffer);
912 q->ops = &cal_video_qops;
913 q->mem_ops = &vb2_dma_contig_memops;
914 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
915 q->lock = &ctx->mutex;
916 q->min_buffers_needed = 3;
917 q->dev = ctx->cal->dev;
918
919 ret = vb2_queue_init(q);
920 if (ret)
921 return ret;
922
923
924 vfd->fops = &cal_fops;
925 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING
926 | (cal_mc_api ? V4L2_CAP_IO_MC : 0);
927 vfd->v4l2_dev = &ctx->cal->v4l2_dev;
928 vfd->queue = q;
929 snprintf(vfd->name, sizeof(vfd->name), "CAL output %u", ctx->index);
930 vfd->release = video_device_release_empty;
931 vfd->ioctl_ops = cal_mc_api ? &cal_ioctl_mc_ops : &cal_ioctl_video_ops;
932 vfd->lock = &ctx->mutex;
933 video_set_drvdata(vfd, ctx);
934
935 ctx->pad.flags = MEDIA_PAD_FL_SINK;
936 ret = media_entity_pads_init(&vfd->entity, 1, &ctx->pad);
937 if (ret < 0)
938 return ret;
939
940 if (!cal_mc_api) {
941
942 struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
943
944 ret = v4l2_ctrl_handler_init(hdl, 11);
945 if (ret < 0) {
946 ctx_err(ctx, "Failed to init ctrl handler\n");
947 goto error;
948 }
949
950 vfd->ctrl_handler = hdl;
951 }
952
953 return 0;
954
955error:
956 media_entity_cleanup(&vfd->entity);
957 return ret;
958}
959
960void cal_ctx_v4l2_cleanup(struct cal_ctx *ctx)
961{
962 if (!cal_mc_api)
963 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
964
965 media_entity_cleanup(&ctx->vdev.entity);
966}
967
