+static int dw_mipi_dsi_register(struct drm_device *drm,Hi Chris
+ struct dw_mipi_dsi *dsi)
+{
+ struct drm_encoder *encoder = &dsi->encoder;
+ struct drm_connector *connector = &dsi->connector;
+ struct device *dev = dsi->dev;
+ int ret;
+
+ encoder->possible_crtcs = drm_of_find_possible_crtcs(drm,
+ dev->of_node);
+ /*
+ * If we failed to find the CRTC(s) which this encoder is
+ * supposed to be connected to, it's because the CRTC has
+ * not been registered yet. Defer probing, and hope that
+ * the required CRTC is added later.
+ */
+ if (encoder->possible_crtcs == 0)
+ return -EPROBE_DEFER;
+
+ drm_encoder_helper_add(&dsi->encoder,
+ &dw_mipi_dsi_encoder_helper_funcs);
+ ret = drm_encoder_init(drm, &dsi->encoder, &dw_mipi_dsi_encoder_funcs,
+ DRM_MODE_ENCODER_DSI);
+ if (ret) {
+ dev_err(dev, "Failed to initialize encoder with drm\n");
+ return ret;
+ }
+
+ drm_connector_helper_add(connector,
+ &dw_mipi_dsi_connector_helper_funcs);
+
+ drm_connector_init(drm, &dsi->connector,
+ &dw_mipi_dsi_atomic_connector_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+