[media] i.MX2: eMMa-PrP: Allow userptr IO mode

Userptr can be very useful if this device
is requested to use video buffers allocated
by another processing device. So that
buffers don't need to be copied.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/mx2_emmaprp.c b/drivers/media/video/mx2_emmaprp.c
index ba89a7401c8c9b6637d02ce6de5a6020ce111406..55ac1735e85b76a162e54790d17f9de77d391694 100644 (file)
--- a/drivers/media/video/mx2_emmaprp.c
+++ b/drivers/media/video/mx2_emmaprp.c
@@ -755,7 +755,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
 
        memset(src_vq, 0, sizeof(*src_vq));
        src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
-       src_vq->io_modes = VB2_MMAP;
+       src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
        src_vq->drv_priv = ctx;
        src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
        src_vq->ops = &emmaprp_qops;
@@ -767,7 +767,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
 
        memset(dst_vq, 0, sizeof(*dst_vq));
        dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-       dst_vq->io_modes = VB2_MMAP;
+       dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
        dst_vq->drv_priv = ctx;
        dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
        dst_vq->ops = &emmaprp_qops;