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/* SPDX-License-Identifier: GPL-2.0+ */
* rcar_du_plane.h -- R-Car Display Unit Planes
* Copyright (C) 2013-2014 Renesas Electronics Corporation
* Contact: Laurent Pinchart (
#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.
enum rcar_du_plane_source {
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 =
return __rcar_du_plane_setup(plane->group, state);
#endif /* __RCAR_DU_PLANE_H__ */