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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/media/platform/m2m-deinterlace.c
....@@ -1,13 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * V4L2 deinterlacing support.
34  *
45  * Copyright (c) 2012 Vista Silicon S.L.
56  * Javier Martin <javier.martin@vista-silicon.com>
6
- *
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 by the
9
- * Free Software Foundation; either version 2 of the
10
- * License, or (at your option) any later version
117  */
128 
139 #include <linux/module.h>
....@@ -41,7 +37,6 @@
4137 	v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
4238 
4339 struct deinterlace_fmt {
44
-	char	*name;
4540 	u32	fourcc;
4641 	/* Types the format can be used for */
4742 	u32	types;
....@@ -49,12 +44,10 @@
4944 
5045 static struct deinterlace_fmt formats[] = {
5146 	{
52
-		.name	= "YUV 4:2:0 Planar",
5347 		.fourcc	= V4L2_PIX_FMT_YUV420,
5448 		.types	= MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
5549 	},
5650 	{
57
-		.name	= "YUYV 4:2:2",
5851 		.fourcc	= V4L2_PIX_FMT_YUYV,
5952 		.types	= MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
6053 	},
....@@ -139,13 +132,13 @@
139132 };
140133 
141134 struct deinterlace_ctx {
135
+	struct v4l2_fh		fh;
142136 	struct deinterlace_dev	*dev;
143137 
144138 	/* Abort requested by m2m */
145139 	int			aborting;
146140 	enum v4l2_colorspace	colorspace;
147141 	dma_cookie_t		cookie;
148
-	struct v4l2_m2m_ctx	*m2m_ctx;
149142 	struct dma_interleaved_template *xt;
150143 };
151144 
....@@ -157,9 +150,9 @@
157150 	struct deinterlace_ctx *ctx = priv;
158151 	struct deinterlace_dev *pcdev = ctx->dev;
159152 
160
-	if ((v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) > 0)
161
-	    && (v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) > 0)
162
-	    && (atomic_read(&ctx->dev->busy) == 0)) {
153
+	if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) > 0 &&
154
+	    v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) > 0 &&
155
+	    !atomic_read(&ctx->dev->busy)) {
163156 		dprintk(pcdev, "Task ready\n");
164157 		return 1;
165158 	}
....@@ -178,7 +171,7 @@
178171 
179172 	dprintk(pcdev, "Aborting task\n");
180173 
181
-	v4l2_m2m_job_finish(pcdev->m2m_dev, ctx->m2m_ctx);
174
+	v4l2_m2m_job_finish(pcdev->m2m_dev, ctx->fh.m2m_ctx);
182175 }
183176 
184177 static void dma_callback(void *data)
....@@ -189,8 +182,8 @@
189182 
190183 	atomic_set(&pcdev->busy, 0);
191184 
192
-	src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx);
193
-	dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx);
185
+	src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
186
+	dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
194187 
195188 	dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
196189 	dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
....@@ -201,7 +194,7 @@
201194 	v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
202195 	v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
203196 
204
-	v4l2_m2m_job_finish(pcdev->m2m_dev, curr_ctx->m2m_ctx);
197
+	v4l2_m2m_job_finish(pcdev->m2m_dev, curr_ctx->fh.m2m_ctx);
205198 
206199 	dprintk(pcdev, "dma transfers completed.\n");
207200 }
....@@ -220,8 +213,8 @@
220213 	dma_addr_t p_in, p_out;
221214 	enum dma_ctrl_flags flags;
222215 
223
-	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
224
-	dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
216
+	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
217
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
225218 
226219 	s_q_data = get_q_data(V4L2_BUF_TYPE_VIDEO_OUTPUT);
227220 	s_width	= s_q_data->width;
....@@ -438,18 +431,9 @@
438431 static int vidioc_querycap(struct file *file, void *priv,
439432 			   struct v4l2_capability *cap)
440433 {
441
-	strlcpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
442
-	strlcpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
443
-	strlcpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->card));
444
-	/*
445
-	 * This is only a mem-to-mem video device. The capture and output
446
-	 * device capability flags are left only for backward compatibility
447
-	 * and are scheduled for removal.
448
-	 */
449
-	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
450
-			   V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
451
-	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
452
-
434
+	strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
435
+	strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
436
+	strscpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->bus_info));
453437 	return 0;
454438 }
455439 
....@@ -474,7 +458,6 @@
474458 	if (i < NUM_FORMATS) {
475459 		/* Format found */
476460 		fmt = &formats[i];
477
-		strlcpy(f->description, fmt->name, sizeof(f->description));
478461 		f->pixelformat = fmt->fourcc;
479462 		return 0;
480463 	}
....@@ -500,7 +483,7 @@
500483 	struct vb2_queue *vq;
501484 	struct deinterlace_q_data *q_data;
502485 
503
-	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
486
+	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
504487 	if (!vq)
505488 		return -EINVAL;
506489 
....@@ -597,7 +580,7 @@
597580 	struct deinterlace_q_data *q_data;
598581 	struct vb2_queue *vq;
599582 
600
-	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
583
+	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
601584 	if (!vq)
602585 		return -EINVAL;
603586 
....@@ -670,36 +653,6 @@
670653 	return ret;
671654 }
672655 
673
-static int vidioc_reqbufs(struct file *file, void *priv,
674
-			  struct v4l2_requestbuffers *reqbufs)
675
-{
676
-	struct deinterlace_ctx *ctx = priv;
677
-
678
-	return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
679
-}
680
-
681
-static int vidioc_querybuf(struct file *file, void *priv,
682
-			   struct v4l2_buffer *buf)
683
-{
684
-	struct deinterlace_ctx *ctx = priv;
685
-
686
-	return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
687
-}
688
-
689
-static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
690
-{
691
-	struct deinterlace_ctx *ctx = priv;
692
-
693
-	return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
694
-}
695
-
696
-static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
697
-{
698
-	struct deinterlace_ctx *ctx = priv;
699
-
700
-	return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
701
-}
702
-
703656 static int vidioc_streamon(struct file *file, void *priv,
704657 			   enum v4l2_buf_type type)
705658 {
....@@ -740,15 +693,7 @@
740693 		return -EINVAL;
741694 	}
742695 
743
-	return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
744
-}
745
-
746
-static int vidioc_streamoff(struct file *file, void *priv,
747
-			    enum v4l2_buf_type type)
748
-{
749
-	struct deinterlace_ctx *ctx = priv;
750
-
751
-	return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
696
+	return v4l2_m2m_streamon(file, ctx->fh.m2m_ctx, type);
752697 }
753698 
754699 static const struct v4l2_ioctl_ops deinterlace_ioctl_ops = {
....@@ -764,14 +709,15 @@
764709 	.vidioc_try_fmt_vid_out	= vidioc_try_fmt_vid_out,
765710 	.vidioc_s_fmt_vid_out	= vidioc_s_fmt_vid_out,
766711 
767
-	.vidioc_reqbufs		= vidioc_reqbufs,
768
-	.vidioc_querybuf	= vidioc_querybuf,
769
-
770
-	.vidioc_qbuf		= vidioc_qbuf,
771
-	.vidioc_dqbuf		= vidioc_dqbuf,
712
+	.vidioc_reqbufs		= v4l2_m2m_ioctl_reqbufs,
713
+	.vidioc_querybuf	= v4l2_m2m_ioctl_querybuf,
714
+	.vidioc_qbuf		= v4l2_m2m_ioctl_qbuf,
715
+	.vidioc_dqbuf		= v4l2_m2m_ioctl_dqbuf,
716
+	.vidioc_prepare_buf	= v4l2_m2m_ioctl_prepare_buf,
717
+	.vidioc_expbuf		= v4l2_m2m_ioctl_expbuf,
772718 
773719 	.vidioc_streamon	= vidioc_streamon,
774
-	.vidioc_streamoff	= vidioc_streamoff,
720
+	.vidioc_streamoff	= v4l2_m2m_ioctl_streamoff,
775721 };
776722 
777723 
....@@ -835,7 +781,7 @@
835781 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
836782 	struct deinterlace_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
837783 
838
-	v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
784
+	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
839785 }
840786 
841787 static const struct vb2_ops deinterlace_qops = {
....@@ -853,7 +799,7 @@
853799 	int ret;
854800 
855801 	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
856
-	src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
802
+	src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
857803 	src_vq->drv_priv = ctx;
858804 	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
859805 	src_vq->ops = &deinterlace_qops;
....@@ -872,7 +818,7 @@
872818 		return ret;
873819 
874820 	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
875
-	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
821
+	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
876822 	dst_vq->drv_priv = ctx;
877823 	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
878824 	dst_vq->ops = &deinterlace_qops;
....@@ -901,12 +847,13 @@
901847 	if (!ctx)
902848 		return -ENOMEM;
903849 
904
-	file->private_data = ctx;
850
+	v4l2_fh_init(&ctx->fh, video_devdata(file));
851
+	file->private_data = &ctx->fh;
905852 	ctx->dev = pcdev;
906853 
907
-	ctx->m2m_ctx = v4l2_m2m_ctx_init(pcdev->m2m_dev, ctx, &queue_init);
908
-	if (IS_ERR(ctx->m2m_ctx)) {
909
-		int ret = PTR_ERR(ctx->m2m_ctx);
854
+	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(pcdev->m2m_dev, ctx, &queue_init);
855
+	if (IS_ERR(ctx->fh.m2m_ctx)) {
856
+		int ret = PTR_ERR(ctx->fh.m2m_ctx);
910857 
911858 		kfree(ctx);
912859 		return ret;
....@@ -920,8 +867,10 @@
920867 	}
921868 
922869 	ctx->colorspace = V4L2_COLORSPACE_REC709;
870
+	v4l2_fh_add(&ctx->fh);
923871 
924
-	dprintk(pcdev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx);
872
+	dprintk(pcdev, "Created instance %p, m2m_ctx: %p\n",
873
+		ctx, ctx->fh.m2m_ctx);
925874 
926875 	return 0;
927876 }
....@@ -933,40 +882,22 @@
933882 
934883 	dprintk(pcdev, "Releasing instance %p\n", ctx);
935884 
936
-	v4l2_m2m_ctx_release(ctx->m2m_ctx);
885
+	v4l2_fh_del(&ctx->fh);
886
+	v4l2_fh_exit(&ctx->fh);
887
+	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
937888 	kfree(ctx->xt);
938889 	kfree(ctx);
939890 
940891 	return 0;
941892 }
942893 
943
-static __poll_t deinterlace_poll(struct file *file,
944
-				 struct poll_table_struct *wait)
945
-{
946
-	struct deinterlace_ctx *ctx = file->private_data;
947
-	__poll_t ret;
948
-
949
-	mutex_lock(&ctx->dev->dev_mutex);
950
-	ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
951
-	mutex_unlock(&ctx->dev->dev_mutex);
952
-
953
-	return ret;
954
-}
955
-
956
-static int deinterlace_mmap(struct file *file, struct vm_area_struct *vma)
957
-{
958
-	struct deinterlace_ctx *ctx = file->private_data;
959
-
960
-	return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
961
-}
962
-
963894 static const struct v4l2_file_operations deinterlace_fops = {
964895 	.owner		= THIS_MODULE,
965896 	.open		= deinterlace_open,
966897 	.release	= deinterlace_release,
967
-	.poll		= deinterlace_poll,
898
+	.poll		= v4l2_m2m_fop_poll,
968899 	.unlocked_ioctl	= video_ioctl2,
969
-	.mmap		= deinterlace_mmap,
900
+	.mmap		= v4l2_m2m_fop_mmap,
970901 };
971902 
972903 static const struct video_device deinterlace_videodev = {
....@@ -976,6 +907,7 @@
976907 	.minor		= -1,
977908 	.release	= video_device_release_empty,
978909 	.vfl_dir	= VFL_DIR_M2M,
910
+	.device_caps	= V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
979911 };
980912 
981913 static const struct v4l2_m2m_ops m2m_ops = {
....@@ -1021,7 +953,7 @@
1021953 	vfd->lock = &pcdev->dev_mutex;
1022954 	vfd->v4l2_dev = &pcdev->v4l2_dev;
1023955 
1024
-	ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
956
+	ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
1025957 	if (ret) {
1026958 		v4l2_err(&pcdev->v4l2_dev, "Failed to register video device\n");
1027959 		goto unreg_dev;