[RFC 10/13] v4l: s5p-tv: mixer: support for dmabuf exporting

[Tomasz Stanislawski]

This patch enhances s5p-tv with support for DMABUF exporting via
VIDIOC_EXPBUF ioctl.

Signed-off-by: Tomasz Stanislawski <t.stanislaws at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/media/video/s5p-tv/mixer_video.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/media/video/s5p-tv/mixer_video.c b/drivers/media/video/s5p-tv/mixer_video.c
index 6b45d93..f08edbf 100644
--- a/drivers/media/video/s5p-tv/mixer_video.c
+++ b/drivers/media/video/s5p-tv/mixer_video.c
@@ -697,6 +697,15 @@ static int mxr_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 	return vb2_dqbuf(&layer->vb_queue, p, file->f_flags & O_NONBLOCK);
 }
 
+static int mxr_expbuf(struct file *file, void *priv,
+	struct v4l2_exportbuffer *eb)
+{
+	struct mxr_layer *layer = video_drvdata(file);
+
+	mxr_dbg(layer->mdev, "%s:%d\n", __func__, __LINE__);
+	return vb2_expbuf(&layer->vb_queue, eb);
+}
+
 static int mxr_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 {
 	struct mxr_layer *layer = video_drvdata(file);
@@ -724,6 +733,7 @@ static const struct v4l2_ioctl_ops mxr_ioctl_ops = {
 	.vidioc_querybuf = mxr_querybuf,
 	.vidioc_qbuf = mxr_qbuf,
 	.vidioc_dqbuf = mxr_dqbuf,
+	.vidioc_expbuf = mxr_expbuf,
 	/* Streaming control */
 	.vidioc_streamon = mxr_streamon,
 	.vidioc_streamoff = mxr_streamoff,
-- 
1.7.5.4