drm/rockchip: register all connectors after bind

Register connectors with userspace after all components are bound.
Signed-off-by: NDaniel Kurtz <djkurtz@chromium.org>
Reviewed-by: NDominik Behr <dbehr@chromium.org>

drm_connector_get_name -> connector->name
This patch is necessary to make X11 see screens it seems.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

@@ -129,6 +129,7 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
 	struct rockchip_drm_private *private;
 	struct dma_iommu_mapping *mapping;
 	struct device *dev = drm_dev->dev;
+	struct drm_connector *connector;
 	int ret;
 
 	private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
@@ -171,6 +172,23 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
 	if (ret)
 		goto err_detach_device;
 
+	/*
+	 * All components are now added, we can publish the connector sysfs
+	 * entries to userspace.  This will generate hotplug events and so
+	 * userspace will expect to be able to access DRM at this point.
+	 */
+	list_for_each_entry(connector, &drm_dev->mode_config.connector_list,
+			head) {
+		ret = drm_connector_register(connector);
+		if (ret) {
+			dev_err(drm_dev->dev,
+				"[CONNECTOR:%d:%s] drm_connector_register failed: %d\n",
+				connector->base.id,
+				connector->name, ret);
+			goto err_unbind;
+		}
+	}
+
 	/* init kms poll for handling hpd */
 	drm_kms_helper_poll_init(drm_dev);
 
@@ -200,6 +218,7 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
 	drm_vblank_cleanup(drm_dev);
 err_kms_helper_poll_fini:
 	drm_kms_helper_poll_fini(drm_dev);
+err_unbind:
 	component_unbind_all(dev, drm_dev);
 err_detach_device:
 	arm_iommu_detach_device(dev);