text: /*
   * rcar_du_vsp.h  --  R-Car Display Unit VSP-Based Compositor
   *
   * Copyright (C) 2015 Renesas Electronics Corporation
   *
   * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   */
  
  #ifndef __RCAR_DU_VSP_H__
  #define __RCAR_DU_VSP_H__
  
  #include <drm/drmP.h>
  #include <drm/drm_crtc.h>
  
  struct rcar_du_format_info;
  struct rcar_du_vsp;
  
  struct rcar_du_vsp_plane {
  	struct drm_plane plane;
  	struct rcar_du_vsp *vsp;
  	unsigned int index;
  };
  
  struct rcar_du_vsp {
  	unsigned int index;
  	struct device *vsp;
  	struct rcar_du_device *dev;
  	struct rcar_du_vsp_plane *planes;
  	unsigned int num_planes;
  };
  
  static inline struct rcar_du_vsp_plane *to_rcar_vsp_plane(struct drm_plane *p)
  {
  	return container_of(p, struct rcar_du_vsp_plane, plane);
  }
  
  /**
   * struct rcar_du_vsp_plane_state - Driver-specific plane state
   * @state: base DRM plane state
   * @format: information about the pixel format used by the plane
   * @sg_tables: scatter-gather tables for the frame buffer memory
   * @alpha: value of the plane alpha property
   * @zpos: value of the plane zpos property
   */
  struct rcar_du_vsp_plane_state {
  	struct drm_plane_state state;
  
  	const struct rcar_du_format_info *format;
  	struct sg_table sg_tables[3];
  
  	unsigned int alpha;
  	unsigned int zpos;
  };
  
  static inline struct rcar_du_vsp_plane_state *
  to_rcar_vsp_plane_state(struct drm_plane_state *state)
  {
  	return container_of(state, struct rcar_du_vsp_plane_state, state);
  }
  
  #ifdef CONFIG_DRM_RCAR_VSP
  int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
  		     unsigned int crtcs);
  void rcar_du_vsp_enable(struct rcar_du_crtc *crtc);
  void rcar_du_vsp_disable(struct rcar_du_crtc *crtc);
  void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc);
  void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc);
  #else
  static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp,
  				   struct device_node *np,
  				   unsigned int crtcs)
  {
  	return -ENXIO;
  }
  static inline void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) { };
  static inline void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) { };
  static inline void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) { };
  static inline void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) { };
  #endif
  
  #endif /* __RCAR_DU_VSP_H__ */
  