[media] v4l: omap4iss: Enable DMABUF support

Enable DMABUF import and export operations using videobuf2.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c
index cdee5966cbcafea4b91cd6e5f99b68218af96966..2085f699da6724d6a3b002174b04a9662dc76fb2 100644 (file)
--- a/drivers/staging/media/omap4iss/iss_video.c
+++ b/drivers/staging/media/omap4iss/iss_video.c
@@ -772,6 +772,14 @@ iss_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b)
        return vb2_qbuf(&vfh->queue, b);
 }
 
+static int
+iss_video_expbuf(struct file *file, void *fh, struct v4l2_exportbuffer *e)
+{
+       struct iss_video_fh *vfh = to_iss_video_fh(fh);
+
+       return vb2_expbuf(&vfh->queue, e);
+}
+
 static int
 iss_video_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
 {
@@ -1021,6 +1029,7 @@ static const struct v4l2_ioctl_ops iss_video_ioctl_ops = {
        .vidioc_reqbufs                 = iss_video_reqbufs,
        .vidioc_querybuf                = iss_video_querybuf,
        .vidioc_qbuf                    = iss_video_qbuf,
+       .vidioc_expbuf                  = iss_video_expbuf,
        .vidioc_dqbuf                   = iss_video_dqbuf,
        .vidioc_streamon                = iss_video_streamon,
        .vidioc_streamoff               = iss_video_streamoff,
@@ -1071,7 +1080,7 @@ static int iss_video_open(struct file *file)
        q = &handle->queue;
 
        q->type = video->type;
-       q->io_modes = VB2_MMAP;
+       q->io_modes = VB2_MMAP | VB2_DMABUF;
        q->drv_priv = handle;
        q->ops = &iss_video_vb2ops;
        q->mem_ops = &vb2_dma_contig_memops;