[media] coda: enable dmabuf support

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/coda.c

@@ -569,6 +569,14 @@ static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 	return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
 }
 
+static int vidioc_expbuf(struct file *file, void *priv,
+			 struct v4l2_exportbuffer *eb)
+{
+	struct coda_ctx *ctx = fh_to_ctx(priv);
+
+	return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb);
+}
+
 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 {
 	struct coda_ctx *ctx = fh_to_ctx(priv);
@@ -609,6 +617,7 @@ static const struct v4l2_ioctl_ops coda_ioctl_ops = {
 	.vidioc_querybuf	= vidioc_querybuf,
 
 	.vidioc_qbuf		= vidioc_qbuf,
+	.vidioc_expbuf		= vidioc_expbuf,
 	.vidioc_dqbuf		= vidioc_dqbuf,
 
 	.vidioc_streamon	= vidioc_streamon,
@@ -1422,7 +1431,7 @@ static int coda_queue_init(void *priv, struct vb2_queue *src_vq,
 	int ret;
 
 	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
-	src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+	src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
 	src_vq->drv_priv = ctx;
 	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 	src_vq->ops = &coda_qops;
@@ -1434,7 +1443,7 @@ static int coda_queue_init(void *priv, struct vb2_queue *src_vq,
 		return ret;
 
 	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+	dst_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
 	dst_vq->drv_priv = ctx;
 	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
 	dst_vq->ops = &coda_qops;