2 * Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver
4 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation, either version 2 of the License,
10 * or (at your option) any later version.
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/types.h>
16 #include <linux/errno.h>
17 #include <linux/bug.h>
18 #include <linux/interrupt.h>
19 #include <linux/device.h>
20 #include <linux/platform_device.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/list.h>
24 #include <linux/slab.h>
25 #include <linux/clk.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/videobuf2-v4l2.h>
28 #include <media/videobuf2-dma-contig.h>
31 #include "fimc-core.h"
33 #include "media-dev.h"
35 static unsigned int get_m2m_fmt_flags(unsigned int stream_type)
37 if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
38 return FMT_FLAGS_M2M_IN;
40 return FMT_FLAGS_M2M_OUT;
43 void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state)
45 struct vb2_v4l2_buffer *src_vb, *dst_vb;
47 if (!ctx || !ctx->fh.m2m_ctx)
50 src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
51 dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
54 v4l2_m2m_buf_done(src_vb, vb_state);
56 v4l2_m2m_buf_done(dst_vb, vb_state);
58 v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev,
62 /* Complete the transaction which has been scheduled for execution. */
63 static void fimc_m2m_shutdown(struct fimc_ctx *ctx)
65 struct fimc_dev *fimc = ctx->fimc_dev;
67 if (!fimc_m2m_pending(fimc))
70 fimc_ctx_state_set(FIMC_CTX_SHUT, ctx);
72 wait_event_timeout(fimc->irq_queue,
73 !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx),
74 FIMC_SHUTDOWN_TIMEOUT);
77 static int start_streaming(struct vb2_queue *q, unsigned int count)
79 struct fimc_ctx *ctx = q->drv_priv;
82 ret = pm_runtime_get_sync(&ctx->fimc_dev->pdev->dev);
83 return ret > 0 ? 0 : ret;
86 static void stop_streaming(struct vb2_queue *q)
88 struct fimc_ctx *ctx = q->drv_priv;
91 fimc_m2m_shutdown(ctx);
92 fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
93 pm_runtime_put(&ctx->fimc_dev->pdev->dev);
96 static void fimc_device_run(void *priv)
98 struct vb2_v4l2_buffer *src_vb, *dst_vb;
99 struct fimc_ctx *ctx = priv;
100 struct fimc_frame *sf, *df;
101 struct fimc_dev *fimc;
105 if (WARN(!ctx, "Null context\n"))
108 fimc = ctx->fimc_dev;
109 spin_lock_irqsave(&fimc->slock, flags);
111 set_bit(ST_M2M_PEND, &fimc->state);
115 if (ctx->state & FIMC_PARAMS) {
116 /* Prepare the DMA offsets for scaler */
117 fimc_prepare_dma_offset(ctx, sf);
118 fimc_prepare_dma_offset(ctx, df);
121 src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
122 ret = fimc_prepare_addr(ctx, &src_vb->vb2_buf, sf, &sf->paddr);
126 dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
127 ret = fimc_prepare_addr(ctx, &dst_vb->vb2_buf, df, &df->paddr);
131 dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
132 dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
134 src_vb->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
136 /* Reconfigure hardware if the context has changed. */
137 if (fimc->m2m.ctx != ctx) {
138 ctx->state |= FIMC_PARAMS;
142 if (ctx->state & FIMC_PARAMS) {
143 fimc_set_yuv_order(ctx);
144 fimc_hw_set_input_path(ctx);
145 fimc_hw_set_in_dma(ctx);
146 ret = fimc_set_scaler_info(ctx);
149 fimc_hw_set_prescaler(ctx);
150 fimc_hw_set_mainscaler(ctx);
151 fimc_hw_set_target_format(ctx);
152 fimc_hw_set_rotation(ctx);
153 fimc_hw_set_effect(ctx);
154 fimc_hw_set_out_dma(ctx);
155 if (fimc->drv_data->alpha_color)
156 fimc_hw_set_rgb_alpha(ctx);
157 fimc_hw_set_output_path(ctx);
159 fimc_hw_set_input_addr(fimc, &sf->paddr);
160 fimc_hw_set_output_addr(fimc, &df->paddr, -1);
162 fimc_activate_capture(ctx);
163 ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP);
164 fimc_hw_activate_input_dma(fimc, true);
167 spin_unlock_irqrestore(&fimc->slock, flags);
170 static void fimc_job_abort(void *priv)
172 fimc_m2m_shutdown(priv);
175 static int fimc_queue_setup(struct vb2_queue *vq,
176 unsigned int *num_buffers, unsigned int *num_planes,
177 unsigned int sizes[], struct device *alloc_devs[])
179 struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
180 struct fimc_frame *f;
183 f = ctx_get_frame(ctx, vq->type);
187 * Return number of non-contiguous planes (plane buffers)
188 * depending on the configured color format.
193 *num_planes = f->fmt->memplanes;
194 for (i = 0; i < f->fmt->memplanes; i++)
195 sizes[i] = f->payload[i];
199 static int fimc_buf_prepare(struct vb2_buffer *vb)
201 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
202 struct fimc_frame *frame;
205 frame = ctx_get_frame(ctx, vb->vb2_queue->type);
207 return PTR_ERR(frame);
209 for (i = 0; i < frame->fmt->memplanes; i++)
210 vb2_set_plane_payload(vb, i, frame->payload[i]);
215 static void fimc_buf_queue(struct vb2_buffer *vb)
217 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
218 struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
219 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
222 static const struct vb2_ops fimc_qops = {
223 .queue_setup = fimc_queue_setup,
224 .buf_prepare = fimc_buf_prepare,
225 .buf_queue = fimc_buf_queue,
226 .wait_prepare = vb2_ops_wait_prepare,
227 .wait_finish = vb2_ops_wait_finish,
228 .stop_streaming = stop_streaming,
229 .start_streaming = start_streaming,
233 * V4L2 ioctl handlers
235 static int fimc_m2m_querycap(struct file *file, void *fh,
236 struct v4l2_capability *cap)
238 struct fimc_dev *fimc = video_drvdata(file);
239 unsigned int caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
241 __fimc_vidioc_querycap(&fimc->pdev->dev, cap, caps);
245 static int fimc_m2m_enum_fmt_mplane(struct file *file, void *priv,
246 struct v4l2_fmtdesc *f)
248 struct fimc_fmt *fmt;
250 fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type),
255 strscpy(f->description, fmt->name, sizeof(f->description));
256 f->pixelformat = fmt->fourcc;
260 static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh,
261 struct v4l2_format *f)
263 struct fimc_ctx *ctx = fh_to_ctx(fh);
264 struct fimc_frame *frame = ctx_get_frame(ctx, f->type);
267 return PTR_ERR(frame);
269 __fimc_get_format(frame, f);
273 static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
275 struct fimc_dev *fimc = ctx->fimc_dev;
276 const struct fimc_variant *variant = fimc->variant;
277 struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
278 struct fimc_fmt *fmt;
279 u32 max_w, mod_x, mod_y;
281 if (!IS_M2M(f->type))
284 fmt = fimc_find_format(&pix->pixelformat, NULL,
285 get_m2m_fmt_flags(f->type), 0);
286 if (WARN(fmt == NULL, "Pixel format lookup failed"))
289 if (pix->field == V4L2_FIELD_ANY)
290 pix->field = V4L2_FIELD_NONE;
291 else if (pix->field != V4L2_FIELD_NONE)
294 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
295 max_w = variant->pix_limit->scaler_dis_w;
296 mod_x = ffs(variant->min_inp_pixsize) - 1;
298 max_w = variant->pix_limit->out_rot_dis_w;
299 mod_x = ffs(variant->min_out_pixsize) - 1;
302 if (tiled_fmt(fmt)) {
303 mod_x = 6; /* 64 x 32 pixels tile */
306 if (variant->min_vsize_align == 1)
307 mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1;
309 mod_y = ffs(variant->min_vsize_align) - 1;
312 v4l_bound_align_image(&pix->width, 16, max_w, mod_x,
313 &pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0);
315 fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp);
319 static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
320 struct v4l2_format *f)
322 struct fimc_ctx *ctx = fh_to_ctx(fh);
323 return fimc_try_fmt_mplane(ctx, f);
326 static void __set_frame_format(struct fimc_frame *frame, struct fimc_fmt *fmt,
327 struct v4l2_pix_format_mplane *pixm)
331 for (i = 0; i < fmt->memplanes; i++) {
332 frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline;
333 frame->payload[i] = pixm->plane_fmt[i].sizeimage;
336 frame->f_width = pixm->width;
337 frame->f_height = pixm->height;
338 frame->o_width = pixm->width;
339 frame->o_height = pixm->height;
340 frame->width = pixm->width;
341 frame->height = pixm->height;
347 static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
348 struct v4l2_format *f)
350 struct fimc_ctx *ctx = fh_to_ctx(fh);
351 struct fimc_dev *fimc = ctx->fimc_dev;
352 struct fimc_fmt *fmt;
353 struct vb2_queue *vq;
354 struct fimc_frame *frame;
357 ret = fimc_try_fmt_mplane(ctx, f);
361 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
363 if (vb2_is_busy(vq)) {
364 v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type);
368 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
369 frame = &ctx->s_frame;
371 frame = &ctx->d_frame;
373 fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL,
374 get_m2m_fmt_flags(f->type), 0);
378 __set_frame_format(frame, fmt, &f->fmt.pix_mp);
380 /* Update RGB Alpha control state and value range */
381 fimc_alpha_ctrl_update(ctx);
386 static int fimc_m2m_g_selection(struct file *file, void *fh,
387 struct v4l2_selection *s)
389 struct fimc_ctx *ctx = fh_to_ctx(fh);
390 struct fimc_frame *frame;
392 frame = ctx_get_frame(ctx, s->type);
394 return PTR_ERR(frame);
397 case V4L2_SEL_TGT_CROP:
398 case V4L2_SEL_TGT_CROP_DEFAULT:
399 case V4L2_SEL_TGT_CROP_BOUNDS:
400 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
403 case V4L2_SEL_TGT_COMPOSE:
404 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
405 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
406 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
414 case V4L2_SEL_TGT_CROP:
415 case V4L2_SEL_TGT_COMPOSE:
416 s->r.left = frame->offs_h;
417 s->r.top = frame->offs_v;
418 s->r.width = frame->width;
419 s->r.height = frame->height;
421 case V4L2_SEL_TGT_CROP_DEFAULT:
422 case V4L2_SEL_TGT_CROP_BOUNDS:
423 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
424 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
427 s->r.width = frame->o_width;
428 s->r.height = frame->o_height;
436 static int fimc_m2m_try_selection(struct fimc_ctx *ctx,
437 struct v4l2_selection *s)
439 struct fimc_dev *fimc = ctx->fimc_dev;
440 struct fimc_frame *f;
441 u32 min_size, halign, depth = 0;
444 if (s->r.top < 0 || s->r.left < 0) {
445 v4l2_err(&fimc->m2m.vfd,
446 "doesn't support negative values for top & left\n");
449 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
451 if (s->target != V4L2_SEL_TGT_COMPOSE)
453 } else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
455 if (s->target != V4L2_SEL_TGT_CROP)
461 min_size = (f == &ctx->s_frame) ?
462 fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
464 /* Get pixel alignment constraints. */
465 if (fimc->variant->min_vsize_align == 1)
466 halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1;
468 halign = ffs(fimc->variant->min_vsize_align) - 1;
470 for (i = 0; i < f->fmt->memplanes; i++)
471 depth += f->fmt->depth[i];
473 v4l_bound_align_image(&s->r.width, min_size, f->o_width,
475 &s->r.height, min_size, f->o_height,
476 halign, 64/(ALIGN(depth, 8)));
478 /* adjust left/top if cropping rectangle is out of bounds */
479 if (s->r.left + s->r.width > f->o_width)
480 s->r.left = f->o_width - s->r.width;
481 if (s->r.top + s->r.height > f->o_height)
482 s->r.top = f->o_height - s->r.height;
484 s->r.left = round_down(s->r.left, min_size);
485 s->r.top = round_down(s->r.top, fimc->variant->hor_offs_align);
487 dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
488 s->r.left, s->r.top, s->r.width, s->r.height,
489 f->f_width, f->f_height);
494 static int fimc_m2m_s_selection(struct file *file, void *fh,
495 struct v4l2_selection *s)
497 struct fimc_ctx *ctx = fh_to_ctx(fh);
498 struct fimc_dev *fimc = ctx->fimc_dev;
499 struct fimc_frame *f;
502 ret = fimc_m2m_try_selection(ctx, s);
506 f = (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
507 &ctx->s_frame : &ctx->d_frame;
509 /* Check to see if scaling ratio is within supported range */
510 if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
511 ret = fimc_check_scaler_ratio(ctx, s->r.width,
512 s->r.height, ctx->d_frame.width,
513 ctx->d_frame.height, ctx->rotation);
515 ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width,
516 ctx->s_frame.height, s->r.width,
517 s->r.height, ctx->rotation);
520 v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n");
524 f->offs_h = s->r.left;
525 f->offs_v = s->r.top;
526 f->width = s->r.width;
527 f->height = s->r.height;
529 fimc_ctx_state_set(FIMC_PARAMS, ctx);
534 static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = {
535 .vidioc_querycap = fimc_m2m_querycap,
536 .vidioc_enum_fmt_vid_cap_mplane = fimc_m2m_enum_fmt_mplane,
537 .vidioc_enum_fmt_vid_out_mplane = fimc_m2m_enum_fmt_mplane,
538 .vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane,
539 .vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane,
540 .vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane,
541 .vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane,
542 .vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane,
543 .vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane,
544 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
545 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
546 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
547 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
548 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
549 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
550 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
551 .vidioc_g_selection = fimc_m2m_g_selection,
552 .vidioc_s_selection = fimc_m2m_s_selection,
556 static int queue_init(void *priv, struct vb2_queue *src_vq,
557 struct vb2_queue *dst_vq)
559 struct fimc_ctx *ctx = priv;
562 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
563 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
564 src_vq->drv_priv = ctx;
565 src_vq->ops = &fimc_qops;
566 src_vq->mem_ops = &vb2_dma_contig_memops;
567 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
568 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
569 src_vq->lock = &ctx->fimc_dev->lock;
570 src_vq->dev = &ctx->fimc_dev->pdev->dev;
572 ret = vb2_queue_init(src_vq);
576 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
577 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
578 dst_vq->drv_priv = ctx;
579 dst_vq->ops = &fimc_qops;
580 dst_vq->mem_ops = &vb2_dma_contig_memops;
581 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
582 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
583 dst_vq->lock = &ctx->fimc_dev->lock;
584 dst_vq->dev = &ctx->fimc_dev->pdev->dev;
586 return vb2_queue_init(dst_vq);
589 static int fimc_m2m_set_default_format(struct fimc_ctx *ctx)
591 struct v4l2_pix_format_mplane pixm = {
592 .pixelformat = V4L2_PIX_FMT_RGB32,
596 .bytesperline = 800 * 4,
597 .sizeimage = 800 * 4 * 600,
600 struct fimc_fmt *fmt;
602 fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0);
606 __set_frame_format(&ctx->s_frame, fmt, &pixm);
607 __set_frame_format(&ctx->d_frame, fmt, &pixm);
612 static int fimc_m2m_open(struct file *file)
614 struct fimc_dev *fimc = video_drvdata(file);
615 struct fimc_ctx *ctx;
618 pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state);
620 if (mutex_lock_interruptible(&fimc->lock))
623 * Don't allow simultaneous open() of the mem-to-mem and the
624 * capture video node that belong to same FIMC IP instance.
626 if (test_bit(ST_CAPT_BUSY, &fimc->state))
629 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
634 v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd);
635 ctx->fimc_dev = fimc;
637 /* Default color format */
638 ctx->s_frame.fmt = fimc_get_format(0);
639 ctx->d_frame.fmt = fimc_get_format(0);
641 ret = fimc_ctrls_create(ctx);
645 /* Use separate control handler per file handle */
646 ctx->fh.ctrl_handler = &ctx->ctrls.handler;
647 file->private_data = &ctx->fh;
648 v4l2_fh_add(&ctx->fh);
650 /* Setup the device context for memory-to-memory mode */
651 ctx->state = FIMC_CTX_M2M;
653 ctx->in_path = FIMC_IO_DMA;
654 ctx->out_path = FIMC_IO_DMA;
655 ctx->scaler.enabled = 1;
657 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
658 if (IS_ERR(ctx->fh.m2m_ctx)) {
659 ret = PTR_ERR(ctx->fh.m2m_ctx);
663 if (fimc->m2m.refcnt++ == 0)
664 set_bit(ST_M2M_RUN, &fimc->state);
666 ret = fimc_m2m_set_default_format(ctx);
670 mutex_unlock(&fimc->lock);
674 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
676 fimc_ctrls_delete(ctx);
677 v4l2_fh_del(&ctx->fh);
679 v4l2_fh_exit(&ctx->fh);
682 mutex_unlock(&fimc->lock);
686 static int fimc_m2m_release(struct file *file)
688 struct fimc_ctx *ctx = fh_to_ctx(file->private_data);
689 struct fimc_dev *fimc = ctx->fimc_dev;
691 dbg("pid: %d, state: 0x%lx, refcnt= %d",
692 task_pid_nr(current), fimc->state, fimc->m2m.refcnt);
694 mutex_lock(&fimc->lock);
696 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
697 fimc_ctrls_delete(ctx);
698 v4l2_fh_del(&ctx->fh);
699 v4l2_fh_exit(&ctx->fh);
701 if (--fimc->m2m.refcnt <= 0)
702 clear_bit(ST_M2M_RUN, &fimc->state);
705 mutex_unlock(&fimc->lock);
709 static const struct v4l2_file_operations fimc_m2m_fops = {
710 .owner = THIS_MODULE,
711 .open = fimc_m2m_open,
712 .release = fimc_m2m_release,
713 .poll = v4l2_m2m_fop_poll,
714 .unlocked_ioctl = video_ioctl2,
715 .mmap = v4l2_m2m_fop_mmap,
718 static const struct v4l2_m2m_ops m2m_ops = {
719 .device_run = fimc_device_run,
720 .job_abort = fimc_job_abort,
723 int fimc_register_m2m_device(struct fimc_dev *fimc,
724 struct v4l2_device *v4l2_dev)
726 struct video_device *vfd = &fimc->m2m.vfd;
729 fimc->v4l2_dev = v4l2_dev;
731 memset(vfd, 0, sizeof(*vfd));
732 vfd->fops = &fimc_m2m_fops;
733 vfd->ioctl_ops = &fimc_m2m_ioctl_ops;
734 vfd->v4l2_dev = v4l2_dev;
736 vfd->release = video_device_release_empty;
737 vfd->lock = &fimc->lock;
738 vfd->vfl_dir = VFL_DIR_M2M;
739 set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
741 snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
742 video_set_drvdata(vfd, fimc);
744 fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops);
745 if (IS_ERR(fimc->m2m.m2m_dev)) {
746 v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n");
747 return PTR_ERR(fimc->m2m.m2m_dev);
750 ret = media_entity_pads_init(&vfd->entity, 0, NULL);
754 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
758 v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
759 vfd->name, video_device_node_name(vfd));
763 media_entity_cleanup(&vfd->entity);
765 v4l2_m2m_release(fimc->m2m.m2m_dev);
769 void fimc_unregister_m2m_device(struct fimc_dev *fimc)
774 if (fimc->m2m.m2m_dev)
775 v4l2_m2m_release(fimc->m2m.m2m_dev);
777 if (video_is_registered(&fimc->m2m.vfd)) {
778 video_unregister_device(&fimc->m2m.vfd);
779 media_entity_cleanup(&fimc->m2m.vfd.entity);