[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 ba89a74..55ac173 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;