LXR linux/drivers/gpu/drm/rcar-du/rcar_du

   1/*
   2 * rcar_du_vsp.h  --  R-Car Display Unit VSP-Based Compositor
   3 *
   4 * Copyright (C) 2015 Renesas Electronics Corporation
   5 *
   6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 */
  13
  14#ifndef __RCAR_DU_VSP_H__
  15#define __RCAR_DU_VSP_H__
  16
  17#include <drm/drmP.h>
  18#include <drm/drm_crtc.h>
  19
  20struct rcar_du_format_info;
  21struct rcar_du_vsp;
  22
  23struct rcar_du_vsp_plane {
  24        struct drm_plane plane;
  25        struct rcar_du_vsp *vsp;
  26        unsigned int index;
  27};
  28
  29struct rcar_du_vsp {
  30        unsigned int index;
  31        struct device *vsp;
  32        struct rcar_du_device *dev;
  33        struct rcar_du_vsp_plane *planes;
  34        unsigned int num_planes;
  35};
  36
  37static inline struct rcar_du_vsp_plane *to_rcar_vsp_plane(struct drm_plane *p)
  38{
  39        return container_of(p, struct rcar_du_vsp_plane, plane);
  40}
  41
  42/**
  43 * struct rcar_du_vsp_plane_state - Driver-specific plane state
  44 * @state: base DRM plane state
  45 * @format: information about the pixel format used by the plane
  46 * @sg_tables: scatter-gather tables for the frame buffer memory
  47 * @alpha: value of the plane alpha property
  48 * @zpos: value of the plane zpos property
  49 */
  50struct rcar_du_vsp_plane_state {
  51        struct drm_plane_state state;
  52
  53        const struct rcar_du_format_info *format;
  54        struct sg_table sg_tables[3];
  55
  56        unsigned int alpha;
  57        unsigned int zpos;
  58};
  59
  60static inline struct rcar_du_vsp_plane_state *
  61to_rcar_vsp_plane_state(struct drm_plane_state *state)
  62{
  63        return container_of(state, struct rcar_du_vsp_plane_state, state);
  64}
  65
  66#ifdef CONFIG_DRM_RCAR_VSP
  67int rcar_du_vsp_init(struct rcar_du_vsp *vsp);
  68void rcar_du_vsp_enable(struct rcar_du_crtc *crtc);
  69void rcar_du_vsp_disable(struct rcar_du_crtc *crtc);
  70void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc);
  71void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc);
  72#else
  73static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp) { return -ENXIO; };
  74static inline void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) { };
  75static inline void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) { };
  76static inline void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) { };
  77static inline void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) { };
  78#endif
  79
  80#endif /* __RCAR_DU_VSP_H__ */
  81