1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
new file mode 100644
index 000000000..f9893d7d6
--- /dev/null
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * R-Car Display Unit Planes
+ *
+ * Copyright (C) 2013-2014 Renesas Electronics Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ */
+
+#ifndef __RCAR_DU_PLANE_H__
+#define __RCAR_DU_PLANE_H__
+
+#include <drm/drm_plane.h>
+
+struct rcar_du_format_info;
+struct rcar_du_group;
+
+/*
+ * The RCAR DU has 8 hardware planes, shared between primary and overlay planes.
+ * As using overlay planes requires at least one of the CRTCs being enabled, no
+ * more than 7 overlay planes can be available. We thus create 1 primary plane
+ * per CRTC and 7 overlay planes, for a total of up to 9 KMS planes.
+ */
+#define RCAR_DU_NUM_KMS_PLANES		9
+#define RCAR_DU_NUM_HW_PLANES		8
+
+enum rcar_du_plane_source {
+	RCAR_DU_PLANE_MEMORY,
+	RCAR_DU_PLANE_VSPD0,
+	RCAR_DU_PLANE_VSPD1,
+};
+
+struct rcar_du_plane {
+	struct drm_plane plane;
+	struct rcar_du_group *group;
+};
+
+static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
+{
+	return container_of(plane, struct rcar_du_plane, plane);
+}
+
+/**
+ * struct rcar_du_plane_state - Driver-specific plane state
+ * @state: base DRM plane state
+ * @format: information about the pixel format used by the plane
+ * @hwindex: 0-based hardware plane index, -1 means unused
+ * @colorkey: value of the plane colorkey property
+ */
+struct rcar_du_plane_state {
+	struct drm_plane_state state;
+
+	const struct rcar_du_format_info *format;
+	int hwindex;
+	enum rcar_du_plane_source source;
+
+	unsigned int colorkey;
+};
+
+static inline struct rcar_du_plane_state *
+to_rcar_plane_state(struct drm_plane_state *state)
+{
+	return container_of(state, struct rcar_du_plane_state, state);
+}
+
+int rcar_du_atomic_check_planes(struct drm_device *dev,
+				struct drm_atomic_state *state);
+
+int __rcar_du_plane_atomic_check(struct drm_plane *plane,
+				 struct drm_plane_state *state,
+				 const struct rcar_du_format_info **format);
+
+int rcar_du_planes_init(struct rcar_du_group *rgrp);
+
+void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
+			   const struct rcar_du_plane_state *state);
+
+static inline void rcar_du_plane_setup(struct rcar_du_plane *plane)
+{
+	struct rcar_du_plane_state *state =
+		to_rcar_plane_state(plane->plane.state);
+
+	return __rcar_du_plane_setup(plane->group, state);
+}
+
+#endif /* __RCAR_DU_PLANE_H__ */