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From:   Aakarsh Jain <aakarsh.jain@samsung.com>
To:     linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Cc:     m.szyprowski@samsung.com, andrzej.hajda@intel.com,
        mchehab@kernel.org, hverkuil-cisco@xs4all.nl,
        krzysztof.kozlowski+dt@linaro.org, robh+dt@kernel.org,
        conor+dt@kernel.org, linux-samsung-soc@vger.kernel.org,
        andi@etezian.org, gost.dev@samsung.com, alim.akhtar@samsung.com,
        aswani.reddy@samsung.com, pankaj.dubey@samsung.com,
        ajaykumar.rs@samsung.com, aakarsh.jain@samsung.com,
        linux-fsd@tesla.com, Smitha T Murthy <smithatmurthy@gmail.com>
Subject: [Patch v6 07/10] media: s5p-mfc: Add support for DMABUF for encoder
Date:   Wed, 13 Dec 2023 13:41:02 +0530
Message-Id: <20231213081105.25817-8-aakarsh.jain@samsung.com>
In-Reply-To: <20231213081105.25817-1-aakarsh.jain@samsung.com>
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        <CGME20231213081137epcas5p132baeb4789897e3386b9357b55cc63c4@epcas5p1.samsung.com>
Precedence: bulk

Add dmabuf support for mfc encoder

Cc: linux-fsd@tesla.com
Signed-off-by: Smitha T Murthy <smithatmurthy@gmail.com>
Signed-off-by: Aakarsh Jain <aakarsh.jain@samsung.com>
---
 .../media/platform/samsung/s5p-mfc/s5p_mfc.c  |  4 ++--
 .../platform/samsung/s5p-mfc/s5p_mfc_enc.c    | 20 ++++++++++---------
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c
index dee9ef017997..bd055dea827e 100644
--- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc.c
@@ -865,7 +865,7 @@ static int s5p_mfc_open(struct file *file)
 		q->io_modes = VB2_MMAP;
 		q->ops = get_dec_queue_ops();
 	} else if (vdev == dev->vfd_enc) {
-		q->io_modes = VB2_MMAP | VB2_USERPTR;
+		q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 		q->ops = get_enc_queue_ops();
 	} else {
 		ret = -ENOENT;
@@ -892,7 +892,7 @@ static int s5p_mfc_open(struct file *file)
 		q->io_modes = VB2_MMAP;
 		q->ops = get_dec_queue_ops();
 	} else if (vdev == dev->vfd_enc) {
-		q->io_modes = VB2_MMAP | VB2_USERPTR;
+		q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 		q->ops = get_enc_queue_ops();
 	} else {
 		ret = -ENOENT;
diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
index 67fe0302464f..ae3764969473 100644
--- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
+++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
@@ -1538,9 +1538,10 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 	struct s5p_mfc_ctx *ctx = fh_to_ctx(priv);
 	int ret = 0;
 
-	/* if memory is not mmp or userptr return error */
+	/* if memory is not mmp or userptr or dmabuf return error */
 	if ((reqbufs->memory != V4L2_MEMORY_MMAP) &&
-		(reqbufs->memory != V4L2_MEMORY_USERPTR))
+		(reqbufs->memory != V4L2_MEMORY_USERPTR) &&
+		(reqbufs->memory != V4L2_MEMORY_DMABUF))
 		return -EINVAL;
 	if (reqbufs->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 		if (reqbufs->count == 0) {
@@ -1617,9 +1618,10 @@ static int vidioc_querybuf(struct file *file, void *priv,
 	struct s5p_mfc_ctx *ctx = fh_to_ctx(priv);
 	int ret = 0;
 
-	/* if memory is not mmp or userptr return error */
+	/* if memory is not mmp or userptr or dmabuf return error */
 	if ((buf->memory != V4L2_MEMORY_MMAP) &&
-		(buf->memory != V4L2_MEMORY_USERPTR))
+		(buf->memory != V4L2_MEMORY_USERPTR) &&
+		(buf->memory != V4L2_MEMORY_DMABUF))
 		return -EINVAL;
 	if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 		if (ctx->state != MFCINST_GOT_INST) {
@@ -2581,11 +2583,11 @@ static int s5p_mfc_start_streaming(struct vb2_queue *q, unsigned int count)
 						S5P_MFC_R2H_CMD_SEQ_DONE_RET,
 						0);
 		}
-
-		if (ctx->src_bufs_cnt < ctx->pb_count) {
-			mfc_err("Need minimum %d OUTPUT buffers\n",
-					ctx->pb_count);
-			return -ENOBUFS;
+		if (q->memory != V4L2_MEMORY_DMABUF) {
+			if (ctx->src_bufs_cnt < ctx->pb_count) {
+				mfc_err("Need minimum %d OUTPUT buffers\n", ctx->pb_count);
+				return -ENOBUFS;
+			}
 		}
 	}
 
-- 
2.17.1