+ /* initialize vb2 queue */
+ q = &disp_dev->dev[i]->buffer_queue;
+ memset(q, 0, sizeof(*q));
+ q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ q->io_modes = VB2_MMAP | VB2_USERPTR;
+ q->drv_priv = disp_dev->dev[i];
+ q->ops = &video_qops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->min_buffers_needed = 1;
+
+ err = vb2_queue_init(q);
+ if (err) {
+ v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
+ goto probe_out;
+ }
+
+ disp_dev->dev[i]->alloc_ctx =
+ vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
+ if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
+ v4l2_err(v4l2_dev, "Failed to get the context\n");
+ err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
+ goto probe_out;
+ }
+
+ INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
+