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17#include <linux/bitops.h>
18#include <linux/device.h>
19#include <linux/delay.h>
20#include <linux/errno.h>
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/types.h>
24#include <linux/printk.h>
25#include <linux/pm_runtime.h>
26#include <linux/slab.h>
27#include <linux/videodev2.h>
28
29#include <media/v4l2-device.h>
30#include <media/v4l2-ioctl.h>
31#include <media/videobuf2-v4l2.h>
32#include <media/videobuf2-dma-contig.h>
33#include <media/exynos-fimc.h>
34
35#include "common.h"
36#include "media-dev.h"
37#include "fimc-is.h"
38#include "fimc-isp-video.h"
39#include "fimc-is-param.h"
40
41static int isp_video_capture_queue_setup(struct vb2_queue *vq,
42 const void *parg,
43 unsigned int *num_buffers, unsigned int *num_planes,
44 unsigned int sizes[], void *allocators[])
45{
46 const struct v4l2_format *pfmt = parg;
47 struct fimc_isp *isp = vb2_get_drv_priv(vq);
48 struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt;
49 const struct v4l2_pix_format_mplane *pixm = NULL;
50 const struct fimc_fmt *fmt;
51 unsigned int wh, i;
52
53 if (pfmt) {
54 pixm = &pfmt->fmt.pix_mp;
55 fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, -1);
56 wh = pixm->width * pixm->height;
57 } else {
58 fmt = isp->video_capture.format;
59 wh = vid_fmt->width * vid_fmt->height;
60 }
61
62 if (fmt == NULL)
63 return -EINVAL;
64
65 *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN,
66 FIMC_ISP_REQ_BUFS_MAX);
67 *num_planes = fmt->memplanes;
68
69 for (i = 0; i < fmt->memplanes; i++) {
70 unsigned int size = (wh * fmt->depth[i]) / 8;
71 if (pixm)
72 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
73 else
74 sizes[i] = size;
75 allocators[i] = isp->alloc_ctx;
76 }
77
78 return 0;
79}
80
81static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is)
82{
83 return &__get_curr_is_config(is)->isp.dma2_output;
84}
85
86static int isp_video_capture_start_streaming(struct vb2_queue *q,
87 unsigned int count)
88{
89 struct fimc_isp *isp = vb2_get_drv_priv(q);
90 struct fimc_is *is = fimc_isp_to_is(isp);
91 struct param_dma_output *dma = __get_isp_dma2(is);
92 struct fimc_is_video *video = &isp->video_capture;
93 int ret;
94
95 if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) ||
96 test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state))
97 return 0;
98
99
100 dma->cmd = DMA_OUTPUT_COMMAND_ENABLE;
101 dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE;
102 dma->buffer_address = is->is_dma_p_region +
103 DMA2_OUTPUT_ADDR_ARRAY_OFFS;
104 dma->buffer_number = video->reqbufs_count;
105 dma->dma_out_mask = video->buf_mask;
106
107 isp_dbg(2, &video->ve.vdev,
108 "buf_count: %d, planes: %d, dma addr table: %#x\n",
109 video->buf_count, video->format->memplanes,
110 dma->buffer_address);
111
112 fimc_is_mem_barrier();
113
114 fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT);
115 __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT);
116
117 ret = fimc_is_itf_s_param(is, false);
118 if (ret < 0)
119 return ret;
120
121 ret = fimc_pipeline_call(&video->ve, set_stream, 1);
122 if (ret < 0)
123 return ret;
124
125 set_bit(ST_ISP_VID_CAP_STREAMING, &isp->state);
126 return ret;
127}
128
129static void isp_video_capture_stop_streaming(struct vb2_queue *q)
130{
131 struct fimc_isp *isp = vb2_get_drv_priv(q);
132 struct fimc_is *is = fimc_isp_to_is(isp);
133 struct param_dma_output *dma = __get_isp_dma2(is);
134 int ret;
135
136 ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0);
137 if (ret < 0)
138 return;
139
140 dma->cmd = DMA_OUTPUT_COMMAND_DISABLE;
141 dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE;
142 dma->buffer_number = 0;
143 dma->buffer_address = 0;
144 dma->dma_out_mask = 0;
145
146 fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT);
147 __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT);
148
149 ret = fimc_is_itf_s_param(is, false);
150 if (ret < 0)
151 dev_warn(&is->pdev->dev, "%s: DMA stop failed\n", __func__);
152
153 fimc_is_hw_set_isp_buf_mask(is, 0);
154
155 clear_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state);
156 clear_bit(ST_ISP_VID_CAP_STREAMING, &isp->state);
157
158 isp->video_capture.buf_count = 0;
159}
160
161static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb)
162{
163 struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue);
164 struct fimc_is_video *video = &isp->video_capture;
165 int i;
166
167 if (video->format == NULL)
168 return -EINVAL;
169
170 for (i = 0; i < video->format->memplanes; i++) {
171 unsigned long size = video->pixfmt.plane_fmt[i].sizeimage;
172
173 if (vb2_plane_size(vb, i) < size) {
174 v4l2_err(&video->ve.vdev,
175 "User buffer too small (%ld < %ld)\n",
176 vb2_plane_size(vb, i), size);
177 return -EINVAL;
178 }
179 vb2_set_plane_payload(vb, i, size);
180 }
181
182
183 if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) {
184 dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
185 int i;
186
187 for (i = 0; i < video->buf_count; i++)
188 if (video->buffers[i]->dma_addr[0] == dma_addr)
189 return 0;
190 return -ENXIO;
191 }
192
193 return 0;
194}
195
196static void isp_video_capture_buffer_queue(struct vb2_buffer *vb)
197{
198 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
199 struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue);
200 struct fimc_is_video *video = &isp->video_capture;
201 struct fimc_is *is = fimc_isp_to_is(isp);
202 struct isp_video_buf *ivb = to_isp_video_buf(vbuf);
203 unsigned long flags;
204 unsigned int i;
205
206 if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) {
207 spin_lock_irqsave(&is->slock, flags);
208 video->buf_mask |= BIT(ivb->index);
209 spin_unlock_irqrestore(&is->slock, flags);
210 } else {
211 unsigned int num_planes = video->format->memplanes;
212
213 ivb->index = video->buf_count;
214 video->buffers[ivb->index] = ivb;
215
216 for (i = 0; i < num_planes; i++) {
217 int buf_index = ivb->index * num_planes + i;
218
219 ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
220 is->is_p_region->shared[32 + buf_index] =
221 ivb->dma_addr[i];
222
223 isp_dbg(2, &video->ve.vdev,
224 "dma_buf %pad (%d/%d/%d) addr: %pad\n",
225 &buf_index, ivb->index, i, vb->index,
226 &ivb->dma_addr[i]);
227 }
228
229 if (++video->buf_count < video->reqbufs_count)
230 return;
231
232 video->buf_mask = (1UL << video->buf_count) - 1;
233 set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state);
234 }
235
236 if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state))
237 isp_video_capture_start_streaming(vb->vb2_queue, 0);
238}
239
240
241
242
243
244void fimc_isp_video_irq_handler(struct fimc_is *is)
245{
246 struct fimc_is_video *video = &is->isp.video_capture;
247 struct vb2_v4l2_buffer *vbuf;
248 int buf_index;
249
250
251 if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state))
252 return;
253
254 buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count;
255 vbuf = &video->buffers[buf_index]->vb;
256
257 v4l2_get_timestamp(&vbuf->timestamp);
258 vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE);
259
260 video->buf_mask &= ~BIT(buf_index);
261 fimc_is_hw_set_isp_buf_mask(is, video->buf_mask);
262}
263
264static const struct vb2_ops isp_video_capture_qops = {
265 .queue_setup = isp_video_capture_queue_setup,
266 .buf_prepare = isp_video_capture_buffer_prepare,
267 .buf_queue = isp_video_capture_buffer_queue,
268 .wait_prepare = vb2_ops_wait_prepare,
269 .wait_finish = vb2_ops_wait_finish,
270 .start_streaming = isp_video_capture_start_streaming,
271 .stop_streaming = isp_video_capture_stop_streaming,
272};
273
274static int isp_video_open(struct file *file)
275{
276 struct fimc_isp *isp = video_drvdata(file);
277 struct exynos_video_entity *ve = &isp->video_capture.ve;
278 struct media_entity *me = &ve->vdev.entity;
279 int ret;
280
281 if (mutex_lock_interruptible(&isp->video_lock))
282 return -ERESTARTSYS;
283
284 ret = v4l2_fh_open(file);
285 if (ret < 0)
286 goto unlock;
287
288 ret = pm_runtime_get_sync(&isp->pdev->dev);
289 if (ret < 0)
290 goto rel_fh;
291
292 if (v4l2_fh_is_singular_file(file)) {
293 mutex_lock(&me->parent->graph_mutex);
294
295 ret = fimc_pipeline_call(ve, open, me, true);
296
297
298 if (ret == 0)
299 me->use_count++;
300
301 mutex_unlock(&me->parent->graph_mutex);
302 }
303 if (!ret)
304 goto unlock;
305rel_fh:
306 v4l2_fh_release(file);
307unlock:
308 mutex_unlock(&isp->video_lock);
309 return ret;
310}
311
312static int isp_video_release(struct file *file)
313{
314 struct fimc_isp *isp = video_drvdata(file);
315 struct fimc_is_video *ivc = &isp->video_capture;
316 struct media_entity *entity = &ivc->ve.vdev.entity;
317 struct media_device *mdev = entity->parent;
318
319 mutex_lock(&isp->video_lock);
320
321 if (v4l2_fh_is_singular_file(file) && ivc->streaming) {
322 media_entity_pipeline_stop(entity);
323 ivc->streaming = 0;
324 }
325
326 vb2_fop_release(file);
327
328 if (v4l2_fh_is_singular_file(file)) {
329 fimc_pipeline_call(&ivc->ve, close);
330
331 mutex_lock(&mdev->graph_mutex);
332 entity->use_count--;
333 mutex_unlock(&mdev->graph_mutex);
334 }
335
336 pm_runtime_put(&isp->pdev->dev);
337 mutex_unlock(&isp->video_lock);
338
339 return 0;
340}
341
342static const struct v4l2_file_operations isp_video_fops = {
343 .owner = THIS_MODULE,
344 .open = isp_video_open,
345 .release = isp_video_release,
346 .poll = vb2_fop_poll,
347 .unlocked_ioctl = video_ioctl2,
348 .mmap = vb2_fop_mmap,
349};
350
351
352
353
354static int isp_video_querycap(struct file *file, void *priv,
355 struct v4l2_capability *cap)
356{
357 struct fimc_isp *isp = video_drvdata(file);
358
359 __fimc_vidioc_querycap(&isp->pdev->dev, cap, V4L2_CAP_STREAMING);
360 return 0;
361}
362
363static int isp_video_enum_fmt_mplane(struct file *file, void *priv,
364 struct v4l2_fmtdesc *f)
365{
366 const struct fimc_fmt *fmt;
367
368 if (f->index >= FIMC_ISP_NUM_FORMATS)
369 return -EINVAL;
370
371 fmt = fimc_isp_find_format(NULL, NULL, f->index);
372 if (WARN_ON(fmt == NULL))
373 return -EINVAL;
374
375 strlcpy(f->description, fmt->name, sizeof(f->description));
376 f->pixelformat = fmt->fourcc;
377
378 return 0;
379}
380
381static int isp_video_g_fmt_mplane(struct file *file, void *fh,
382 struct v4l2_format *f)
383{
384 struct fimc_isp *isp = video_drvdata(file);
385
386 f->fmt.pix_mp = isp->video_capture.pixfmt;
387 return 0;
388}
389
390static void __isp_video_try_fmt(struct fimc_isp *isp,
391 struct v4l2_pix_format_mplane *pixm,
392 const struct fimc_fmt **fmt)
393{
394 *fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2);
395
396 pixm->colorspace = V4L2_COLORSPACE_SRGB;
397 pixm->field = V4L2_FIELD_NONE;
398 pixm->num_planes = (*fmt)->memplanes;
399 pixm->pixelformat = (*fmt)->fourcc;
400
401
402
403
404 v4l_bound_align_image(&pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN,
405 FIMC_ISP_SOURCE_WIDTH_MAX, 3,
406 &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN,
407 FIMC_ISP_SOURCE_HEIGHT_MAX, 0, 0);
408}
409
410static int isp_video_try_fmt_mplane(struct file *file, void *fh,
411 struct v4l2_format *f)
412{
413 struct fimc_isp *isp = video_drvdata(file);
414
415 __isp_video_try_fmt(isp, &f->fmt.pix_mp, NULL);
416 return 0;
417}
418
419static int isp_video_s_fmt_mplane(struct file *file, void *priv,
420 struct v4l2_format *f)
421{
422 struct fimc_isp *isp = video_drvdata(file);
423 struct fimc_is *is = fimc_isp_to_is(isp);
424 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
425 const struct fimc_fmt *ifmt = NULL;
426 struct param_dma_output *dma = __get_isp_dma2(is);
427
428 __isp_video_try_fmt(isp, pixm, &ifmt);
429
430 if (WARN_ON(ifmt == NULL))
431 return -EINVAL;
432
433 dma->format = DMA_OUTPUT_FORMAT_BAYER;
434 dma->order = DMA_OUTPUT_ORDER_GB_BG;
435 dma->plane = ifmt->memplanes;
436 dma->bitwidth = ifmt->depth[0];
437 dma->width = pixm->width;
438 dma->height = pixm->height;
439
440 fimc_is_mem_barrier();
441
442 isp->video_capture.format = ifmt;
443 isp->video_capture.pixfmt = *pixm;
444
445 return 0;
446}
447
448
449
450
451
452static int isp_video_pipeline_validate(struct fimc_isp *isp)
453{
454 struct v4l2_subdev *sd = &isp->subdev;
455 struct v4l2_subdev_format sink_fmt, src_fmt;
456 struct media_pad *pad;
457 int ret;
458
459 while (1) {
460
461 pad = &sd->entity.pads[0];
462 if (!(pad->flags & MEDIA_PAD_FL_SINK))
463 break;
464 sink_fmt.pad = pad->index;
465 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
466 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
467 if (ret < 0 && ret != -ENOIOCTLCMD)
468 return -EPIPE;
469
470
471 pad = media_entity_remote_pad(pad);
472 if (pad == NULL ||
473 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
474 break;
475
476 sd = media_entity_to_v4l2_subdev(pad->entity);
477 src_fmt.pad = pad->index;
478 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
479 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
480 if (ret < 0 && ret != -ENOIOCTLCMD)
481 return -EPIPE;
482
483 if (src_fmt.format.width != sink_fmt.format.width ||
484 src_fmt.format.height != sink_fmt.format.height ||
485 src_fmt.format.code != sink_fmt.format.code)
486 return -EPIPE;
487 }
488
489 return 0;
490}
491
492static int isp_video_streamon(struct file *file, void *priv,
493 enum v4l2_buf_type type)
494{
495 struct fimc_isp *isp = video_drvdata(file);
496 struct exynos_video_entity *ve = &isp->video_capture.ve;
497 struct media_entity *me = &ve->vdev.entity;
498 int ret;
499
500 ret = media_entity_pipeline_start(me, &ve->pipe->mp);
501 if (ret < 0)
502 return ret;
503
504 ret = isp_video_pipeline_validate(isp);
505 if (ret < 0)
506 goto p_stop;
507
508 ret = vb2_ioctl_streamon(file, priv, type);
509 if (ret < 0)
510 goto p_stop;
511
512 isp->video_capture.streaming = 1;
513 return 0;
514p_stop:
515 media_entity_pipeline_stop(me);
516 return ret;
517}
518
519static int isp_video_streamoff(struct file *file, void *priv,
520 enum v4l2_buf_type type)
521{
522 struct fimc_isp *isp = video_drvdata(file);
523 struct fimc_is_video *video = &isp->video_capture;
524 int ret;
525
526 ret = vb2_ioctl_streamoff(file, priv, type);
527 if (ret < 0)
528 return ret;
529
530 media_entity_pipeline_stop(&video->ve.vdev.entity);
531 video->streaming = 0;
532 return 0;
533}
534
535static int isp_video_reqbufs(struct file *file, void *priv,
536 struct v4l2_requestbuffers *rb)
537{
538 struct fimc_isp *isp = video_drvdata(file);
539 int ret;
540
541 ret = vb2_ioctl_reqbufs(file, priv, rb);
542 if (ret < 0)
543 return ret;
544
545 if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) {
546 rb->count = 0;
547 vb2_ioctl_reqbufs(file, priv, rb);
548 ret = -ENOMEM;
549 }
550
551 isp->video_capture.reqbufs_count = rb->count;
552 return ret;
553}
554
555static const struct v4l2_ioctl_ops isp_video_ioctl_ops = {
556 .vidioc_querycap = isp_video_querycap,
557 .vidioc_enum_fmt_vid_cap_mplane = isp_video_enum_fmt_mplane,
558 .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane,
559 .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane,
560 .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane,
561 .vidioc_reqbufs = isp_video_reqbufs,
562 .vidioc_querybuf = vb2_ioctl_querybuf,
563 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
564 .vidioc_create_bufs = vb2_ioctl_create_bufs,
565 .vidioc_qbuf = vb2_ioctl_qbuf,
566 .vidioc_dqbuf = vb2_ioctl_dqbuf,
567 .vidioc_streamon = isp_video_streamon,
568 .vidioc_streamoff = isp_video_streamoff,
569};
570
571int fimc_isp_video_device_register(struct fimc_isp *isp,
572 struct v4l2_device *v4l2_dev,
573 enum v4l2_buf_type type)
574{
575 struct vb2_queue *q = &isp->video_capture.vb_queue;
576 struct fimc_is_video *iv;
577 struct video_device *vdev;
578 int ret;
579
580 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
581 iv = &isp->video_capture;
582 else
583 return -ENOSYS;
584
585 mutex_init(&isp->video_lock);
586 INIT_LIST_HEAD(&iv->pending_buf_q);
587 INIT_LIST_HEAD(&iv->active_buf_q);
588 iv->format = fimc_isp_find_format(NULL, NULL, 0);
589 iv->pixfmt.width = IS_DEFAULT_WIDTH;
590 iv->pixfmt.height = IS_DEFAULT_HEIGHT;
591 iv->pixfmt.pixelformat = iv->format->fourcc;
592 iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB;
593 iv->reqbufs_count = 0;
594
595 memset(q, 0, sizeof(*q));
596 q->type = type;
597 q->io_modes = VB2_MMAP | VB2_USERPTR;
598 q->ops = &isp_video_capture_qops;
599 q->mem_ops = &vb2_dma_contig_memops;
600 q->buf_struct_size = sizeof(struct isp_video_buf);
601 q->drv_priv = isp;
602 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
603 q->lock = &isp->video_lock;
604
605 ret = vb2_queue_init(q);
606 if (ret < 0)
607 return ret;
608
609 vdev = &iv->ve.vdev;
610 memset(vdev, 0, sizeof(*vdev));
611 snprintf(vdev->name, sizeof(vdev->name), "fimc-is-isp.%s",
612 type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ?
613 "capture" : "output");
614 vdev->queue = q;
615 vdev->fops = &isp_video_fops;
616 vdev->ioctl_ops = &isp_video_ioctl_ops;
617 vdev->v4l2_dev = v4l2_dev;
618 vdev->minor = -1;
619 vdev->release = video_device_release_empty;
620 vdev->lock = &isp->video_lock;
621
622 iv->pad.flags = MEDIA_PAD_FL_SINK;
623 ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0);
624 if (ret < 0)
625 return ret;
626
627 video_set_drvdata(vdev, isp);
628
629 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
630 if (ret < 0) {
631 media_entity_cleanup(&vdev->entity);
632 return ret;
633 }
634
635 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
636 vdev->name, video_device_node_name(vdev));
637
638 return 0;
639}
640
641void fimc_isp_video_device_unregister(struct fimc_isp *isp,
642 enum v4l2_buf_type type)
643{
644 struct exynos_video_entity *ve;
645
646 if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
647 ve = &isp->video_capture.ve;
648 else
649 return;
650
651 mutex_lock(&isp->video_lock);
652
653 if (video_is_registered(&ve->vdev)) {
654 video_unregister_device(&ve->vdev);
655 media_entity_cleanup(&ve->vdev.entity);
656 ve->pipe = NULL;
657 }
658
659 mutex_unlock(&isp->video_lock);
660}
661
