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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb 
 kernel/drivers/media/platform/mx2_emmaprp.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Support eMMa-PrP through mem2mem framework.
34  *
....@@ -10,11 +11,6 @@
1011  *
1112  * Copyright (c) 2011 Vista Silicon S.L.
1213  * Javier Martin <javier.martin@vista-silicon.com>
13
- *
14
- * This program is free software; you can redistribute it and/or modify
15
- * it under the terms of the GNU General Public License as published by the
16
- * Free Software Foundation; either version 2 of the
17
- * License, or (at your option) any later version
1814  */
1915 #include <linux/module.h>
2016 #include <linux/clk.h>
....@@ -124,7 +120,7 @@
124120 #define PRP_CNTL_RZ_FIFO_LEVEL(x)       ((x) << 27)
125121 #define PRP_CNTL_CH2B1EN        (1 << 29)
126122 #define PRP_CNTL_CH2B2EN        (1 << 30)
127
-#define PRP_CNTL_CH2FEN         (1 << 31)
123
+#define PRP_CNTL_CH2FEN         (1UL << 31)
128124 
129125 #define PRP_SIZE_HEIGHT(x)	(x)
130126 #define PRP_SIZE_WIDTH(x)	((x) << 16)
....@@ -149,7 +145,6 @@
149145 #define PRP_INTR_ST_CH2OVF	(1 << 8)
150146 
151147 struct emmaprp_fmt {
152
-	char	*name;
153148 	u32	fourcc;
154149 	/* Types the format can be used for */
155150 	u32	types;
....@@ -157,12 +152,10 @@
157152 
158153 static struct emmaprp_fmt formats[] = {
159154 	{
160
-		.name	= "YUV 4:2:0 Planar",
161155 		.fourcc	= V4L2_PIX_FMT_YUV420,
162156 		.types	= MEM2MEM_CAPTURE,
163157 	},
164158 	{
165
-		.name	= "4:2:2, packed, YUYV",
166159 		.fourcc	= V4L2_PIX_FMT_YUYV,
167160 		.types	= MEM2MEM_OUTPUT,
168161 	},
....@@ -214,11 +207,11 @@
214207 };
215208 
216209 struct emmaprp_ctx {
210
+	struct v4l2_fh		fh;
217211 	struct emmaprp_dev	*dev;
218212 	/* Abort requested by m2m */
219213 	int			aborting;
220214 	struct emmaprp_q_data	q_data[2];
221
-	struct v4l2_m2m_ctx	*m2m_ctx;
222215 };
223216 
224217 static struct emmaprp_q_data *get_q_data(struct emmaprp_ctx *ctx,
....@@ -247,7 +240,7 @@
247240 
248241 	dprintk(pcdev, "Aborting task\n");
249242 
250
-	v4l2_m2m_job_finish(pcdev->m2m_dev, ctx->m2m_ctx);
243
+	v4l2_m2m_job_finish(pcdev->m2m_dev, ctx->fh.m2m_ctx);
251244 }
252245 
253246 static inline void emmaprp_dump_regs(struct emmaprp_dev *pcdev)
....@@ -282,8 +275,8 @@
282275 	dma_addr_t p_in, p_out;
283276 	u32 tmp;
284277 
285
-	src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
286
-	dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
278
+	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
279
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
287280 
288281 	s_q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
289282 	s_width	= s_q_data->width;
....@@ -357,8 +350,8 @@
357350 			pr_err("PrP bus error occurred, this transfer is probably corrupted\n");
358351 			writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL);
359352 		} else if (irqst & PRP_INTR_ST_CH2B1CI) { /* buffer ready */
360
-			src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx);
361
-			dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx);
353
+			src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
354
+			dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
362355 
363356 			dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
364357 			dst_vb->flags &=
....@@ -375,7 +368,7 @@
375368 		}
376369 	}
377370 
378
-	v4l2_m2m_job_finish(pcdev->m2m_dev, curr_ctx->m2m_ctx);
371
+	v4l2_m2m_job_finish(pcdev->m2m_dev, curr_ctx->fh.m2m_ctx);
379372 	return IRQ_HANDLED;
380373 }
381374 
....@@ -385,10 +378,8 @@
385378 static int vidioc_querycap(struct file *file, void *priv,
386379 			   struct v4l2_capability *cap)
387380 {
388
-	strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
389
-	strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1);
390
-	cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
391
-	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
381
+	strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
382
+	strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
392383 	return 0;
393384 }
394385 
....@@ -413,7 +404,6 @@
413404 	if (i < NUM_FORMATS) {
414405 		/* Format found */
415406 		fmt = &formats[i];
416
-		strlcpy(f->description, fmt->name, sizeof(f->description) - 1);
417407 		f->pixelformat = fmt->fourcc;
418408 		return 0;
419409 	}
....@@ -439,7 +429,7 @@
439429 	struct vb2_queue *vq;
440430 	struct emmaprp_q_data *q_data;
441431 
442
-	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
432
+	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
443433 	if (!vq)
444434 		return -EINVAL;
445435 
....@@ -544,7 +534,7 @@
544534 	struct vb2_queue *vq;
545535 	int ret;
546536 
547
-	vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
537
+	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
548538 	if (!vq)
549539 		return -EINVAL;
550540 
....@@ -600,52 +590,6 @@
600590 	return vidioc_s_fmt(priv, f);
601591 }
602592 
603
-static int vidioc_reqbufs(struct file *file, void *priv,
604
-			  struct v4l2_requestbuffers *reqbufs)
605
-{
606
-	struct emmaprp_ctx *ctx = priv;
607
-
608
-	return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
609
-}
610
-
611
-static int vidioc_querybuf(struct file *file, void *priv,
612
-			   struct v4l2_buffer *buf)
613
-{
614
-	struct emmaprp_ctx *ctx = priv;
615
-
616
-	return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
617
-}
618
-
619
-static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
620
-{
621
-	struct emmaprp_ctx *ctx = priv;
622
-
623
-	return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
624
-}
625
-
626
-static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
627
-{
628
-	struct emmaprp_ctx *ctx = priv;
629
-
630
-	return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
631
-}
632
-
633
-static int vidioc_streamon(struct file *file, void *priv,
634
-			   enum v4l2_buf_type type)
635
-{
636
-	struct emmaprp_ctx *ctx = priv;
637
-
638
-	return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
639
-}
640
-
641
-static int vidioc_streamoff(struct file *file, void *priv,
642
-			    enum v4l2_buf_type type)
643
-{
644
-	struct emmaprp_ctx *ctx = priv;
645
-
646
-	return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
647
-}
648
-
649593 static const struct v4l2_ioctl_ops emmaprp_ioctl_ops = {
650594 	.vidioc_querycap	= vidioc_querycap,
651595 
....@@ -659,14 +603,14 @@
659603 	.vidioc_try_fmt_vid_out	= vidioc_try_fmt_vid_out,
660604 	.vidioc_s_fmt_vid_out	= vidioc_s_fmt_vid_out,
661605 
662
-	.vidioc_reqbufs		= vidioc_reqbufs,
663
-	.vidioc_querybuf	= vidioc_querybuf,
664
-
665
-	.vidioc_qbuf		= vidioc_qbuf,
666
-	.vidioc_dqbuf		= vidioc_dqbuf,
667
-
668
-	.vidioc_streamon	= vidioc_streamon,
669
-	.vidioc_streamoff	= vidioc_streamoff,
606
+	.vidioc_reqbufs		= v4l2_m2m_ioctl_reqbufs,
607
+	.vidioc_querybuf	= v4l2_m2m_ioctl_querybuf,
608
+	.vidioc_qbuf		= v4l2_m2m_ioctl_qbuf,
609
+	.vidioc_dqbuf		= v4l2_m2m_ioctl_dqbuf,
610
+	.vidioc_prepare_buf	= v4l2_m2m_ioctl_prepare_buf,
611
+	.vidioc_expbuf		= v4l2_m2m_ioctl_expbuf,
612
+	.vidioc_streamon	= v4l2_m2m_ioctl_streamon,
613
+	.vidioc_streamoff	= v4l2_m2m_ioctl_streamoff,
670614 };
671615 
672616 
....@@ -726,7 +670,7 @@
726670 {
727671 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
728672 	struct emmaprp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
729
-	v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
673
+	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
730674 }
731675 
732676 static const struct vb2_ops emmaprp_qops = {
....@@ -744,7 +688,7 @@
744688 	int ret;
745689 
746690 	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
747
-	src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
691
+	src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
748692 	src_vq->drv_priv = ctx;
749693 	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
750694 	src_vq->ops = &emmaprp_qops;
....@@ -758,7 +702,7 @@
758702 		return ret;
759703 
760704 	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
761
-	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
705
+	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
762706 	dst_vq->drv_priv = ctx;
763707 	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
764708 	dst_vq->ops = &emmaprp_qops;
....@@ -782,7 +726,8 @@
782726 	if (!ctx)
783727 		return -ENOMEM;
784728 
785
-	file->private_data = ctx;
729
+	v4l2_fh_init(&ctx->fh, video_devdata(file));
730
+	file->private_data = &ctx->fh;
786731 	ctx->dev = pcdev;
787732 
788733 	if (mutex_lock_interruptible(&pcdev->dev_mutex)) {
....@@ -790,10 +735,10 @@
790735 		return -ERESTARTSYS;
791736 	}
792737 
793
-	ctx->m2m_ctx = v4l2_m2m_ctx_init(pcdev->m2m_dev, ctx, &queue_init);
738
+	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(pcdev->m2m_dev, ctx, &queue_init);
794739 
795
-	if (IS_ERR(ctx->m2m_ctx)) {
796
-		int ret = PTR_ERR(ctx->m2m_ctx);
740
+	if (IS_ERR(ctx->fh.m2m_ctx)) {
741
+		int ret = PTR_ERR(ctx->fh.m2m_ctx);
797742 
798743 		mutex_unlock(&pcdev->dev_mutex);
799744 		kfree(ctx);
....@@ -804,9 +749,10 @@
804749 	clk_prepare_enable(pcdev->clk_emma_ahb);
805750 	ctx->q_data[V4L2_M2M_SRC].fmt = &formats[1];
806751 	ctx->q_data[V4L2_M2M_DST].fmt = &formats[0];
752
+	v4l2_fh_add(&ctx->fh);
807753 	mutex_unlock(&pcdev->dev_mutex);
808754 
809
-	dprintk(pcdev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx);
755
+	dprintk(pcdev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->fh.m2m_ctx);
810756 
811757 	return 0;
812758 }
....@@ -821,46 +767,22 @@
821767 	mutex_lock(&pcdev->dev_mutex);
822768 	clk_disable_unprepare(pcdev->clk_emma_ahb);
823769 	clk_disable_unprepare(pcdev->clk_emma_ipg);
824
-	v4l2_m2m_ctx_release(ctx->m2m_ctx);
770
+	v4l2_fh_del(&ctx->fh);
771
+	v4l2_fh_exit(&ctx->fh);
772
+	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
825773 	mutex_unlock(&pcdev->dev_mutex);
826774 	kfree(ctx);
827775 
828776 	return 0;
829777 }
830778 
831
-static __poll_t emmaprp_poll(struct file *file,
832
-				 struct poll_table_struct *wait)
833
-{
834
-	struct emmaprp_dev *pcdev = video_drvdata(file);
835
-	struct emmaprp_ctx *ctx = file->private_data;
836
-	__poll_t res;
837
-
838
-	mutex_lock(&pcdev->dev_mutex);
839
-	res = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
840
-	mutex_unlock(&pcdev->dev_mutex);
841
-	return res;
842
-}
843
-
844
-static int emmaprp_mmap(struct file *file, struct vm_area_struct *vma)
845
-{
846
-	struct emmaprp_dev *pcdev = video_drvdata(file);
847
-	struct emmaprp_ctx *ctx = file->private_data;
848
-	int ret;
849
-
850
-	if (mutex_lock_interruptible(&pcdev->dev_mutex))
851
-		return -ERESTARTSYS;
852
-	ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
853
-	mutex_unlock(&pcdev->dev_mutex);
854
-	return ret;
855
-}
856
-
857779 static const struct v4l2_file_operations emmaprp_fops = {
858780 	.owner		= THIS_MODULE,
859781 	.open		= emmaprp_open,
860782 	.release	= emmaprp_release,
861
-	.poll		= emmaprp_poll,
783
+	.poll		= v4l2_m2m_fop_poll,
862784 	.unlocked_ioctl	= video_ioctl2,
863
-	.mmap		= emmaprp_mmap,
785
+	.mmap		= v4l2_m2m_fop_mmap,
864786 };
865787 
866788 static const struct video_device emmaprp_videodev = {
....@@ -870,6 +792,7 @@
870792 	.minor		= -1,
871793 	.release	= video_device_release,
872794 	.vfl_dir	= VFL_DIR_M2M,
795
+	.device_caps	= V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
873796 };
874797 
875798 static const struct v4l2_m2m_ops m2m_ops = {
....@@ -946,7 +869,7 @@
946869 		goto rel_vdev;
947870 	}
948871 
949
-	ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
872
+	ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
950873 	if (ret) {
951874 		v4l2_err(&pcdev->v4l2_dev, "Failed to register video device\n");
952875 		goto rel_m2m;