1 files changed, 24 insertions, 32 deletions

diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index 5ce70dd946aa..8f4bd5aef087 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -21,6 +21,7 @@ static int vkms_conn_get_modes(struct drm_connector *connector)
 {
 	int count;
 
+	/* Use the default modes list from DRM */
 	count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX);
 	drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF);
 
@@ -31,47 +32,30 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
 	.get_modes    = vkms_conn_get_modes,
 };
 
-static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index,
-				  struct drm_crtc *crtc)
-{
-	struct vkms_plane *overlay;
-
-	overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index);
-	if (IS_ERR(overlay))
-		return PTR_ERR(overlay);
-
-	if (!overlay->base.possible_crtcs)
-		overlay->base.possible_crtcs = drm_crtc_mask(crtc);
-
-	return 0;
-}
-
-int vkms_output_init(struct vkms_device *vkmsdev, int index)
+int vkms_output_init(struct vkms_device *vkmsdev)
 {
 	struct vkms_output *output = &vkmsdev->output;
 	struct drm_device *dev = &vkmsdev->drm;
 	struct drm_connector *connector = &output->connector;
 	struct drm_encoder *encoder = &output->encoder;
 	struct drm_crtc *crtc = &output->crtc;
-	struct vkms_plane *primary, *cursor = NULL;
+	struct vkms_plane *primary, *overlay, *cursor = NULL;
 	int ret;
 	int writeback;
 	unsigned int n;
 
-	primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index);
+	/*
+	 * Initialize used plane. One primary plane is required to perform the composition.
+	 *
+	 * The overlay and cursor planes are not mandatory, but can be used to perform complex
+	 * composition.
+	 */
+	primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY);
 	if (IS_ERR(primary))
 		return PTR_ERR(primary);
 
-	if (vkmsdev->config->overlay) {
-		for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
-			ret = vkms_add_overlay_plane(vkmsdev, index, crtc);
-			if (ret)
-				return ret;
-		}
-	}
-
 	if (vkmsdev->config->cursor) {
-		cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index);
+		cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR);
 		if (IS_ERR(cursor))
 			return PTR_ERR(cursor);
 	}
@@ -80,11 +64,22 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index)
 	if (ret)
 		return ret;
 
+	if (vkmsdev->config->overlay) {
+		for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
+			overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY);
+			if (IS_ERR(overlay)) {
+				DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n");
+				return PTR_ERR(overlay);
+			}
+			overlay->base.possible_crtcs = drm_crtc_mask(crtc);
+		}
+	}
+
 	ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
 				 DRM_MODE_CONNECTOR_VIRTUAL);
 	if (ret) {
 		DRM_ERROR("Failed to init connector\n");
-		goto err_connector;
+		return ret;
 	}
 
 	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
@@ -95,7 +90,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index)
 		DRM_ERROR("Failed to init encoder\n");
 		goto err_encoder;
 	}
-	encoder->possible_crtcs = 1;
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
 
 	ret = drm_connector_attach_encoder(connector, encoder);
 	if (ret) {
@@ -119,8 +114,5 @@ err_attach:
 err_encoder:
 	drm_connector_cleanup(connector);
 
-err_connector:
-	drm_crtc_cleanup(crtc);
-
 	return ret;
 }