Add DMABUF support and while at it drop userptr support.
Now that atomisp has been ported to videobuf2 this is trivial.
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
        .vidioc_querybuf = vb2_ioctl_querybuf,
        .vidioc_qbuf = atomisp_qbuf_wrapper,
        .vidioc_dqbuf = atomisp_dqbuf_wrapper,
+       .vidioc_expbuf = vb2_ioctl_expbuf,
        .vidioc_streamon = vb2_ioctl_streamon,
        .vidioc_streamoff = vb2_ioctl_streamoff,
        .vidioc_default = atomisp_vidioc_default,
 
 
        /* Init videobuf2 queue structure */
        pipe->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-       pipe->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR;
+       pipe->vb_queue.io_modes = VB2_MMAP | VB2_DMABUF;
        pipe->vb_queue.buf_struct_size = sizeof(struct ia_css_frame);
        pipe->vb_queue.ops = &atomisp_vb2_ops;
        pipe->vb_queue.mem_ops = &vb2_vmalloc_memops;