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

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * rcar_du_vsp.h  --  R-Car Display Unit VSP-Based Compositor
   4 *
   5 * Copyright (C) 2015 Renesas Electronics Corporation
   6 *
   7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8 */
   9
  10#ifndef __RCAR_DU_VSP_H__
  11#define __RCAR_DU_VSP_H__
  12
  13#include <drm/drm_plane.h>
  14
  15struct drm_framebuffer;
  16struct rcar_du_format_info;
  17struct rcar_du_vsp;
  18struct sg_table;
  19
  20struct rcar_du_vsp_plane {
  21        struct drm_plane plane;
  22        struct rcar_du_vsp *vsp;
  23        unsigned int index;
  24};
  25
  26struct rcar_du_vsp {
  27        unsigned int index;
  28        struct device *vsp;
  29        struct rcar_du_device *dev;
  30        struct rcar_du_vsp_plane *planes;
  31        unsigned int num_planes;
  32};
  33
  34static inline struct rcar_du_vsp_plane *to_rcar_vsp_plane(struct drm_plane *p)
  35{
  36        return container_of(p, struct rcar_du_vsp_plane, plane);
  37}
  38
  39/**
  40 * struct rcar_du_vsp_plane_state - Driver-specific plane state
  41 * @state: base DRM plane state
  42 * @format: information about the pixel format used by the plane
  43 * @sg_tables: scatter-gather tables for the frame buffer memory
  44 */
  45struct rcar_du_vsp_plane_state {
  46        struct drm_plane_state state;
  47
  48        const struct rcar_du_format_info *format;
  49        struct sg_table sg_tables[3];
  50};
  51
  52static inline struct rcar_du_vsp_plane_state *
  53to_rcar_vsp_plane_state(struct drm_plane_state *state)
  54{
  55        return container_of(state, struct rcar_du_vsp_plane_state, state);
  56}
  57
  58#ifdef CONFIG_DRM_RCAR_VSP
  59int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
  60                     unsigned int crtcs);
  61void rcar_du_vsp_enable(struct rcar_du_crtc *crtc);
  62void rcar_du_vsp_disable(struct rcar_du_crtc *crtc);
  63void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc);
  64void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc);
  65int rcar_du_vsp_map_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb,
  66                       struct sg_table sg_tables[3]);
  67void rcar_du_vsp_unmap_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb,
  68                          struct sg_table sg_tables[3]);
  69#else
  70static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp,
  71                                   struct device_node *np,
  72                                   unsigned int crtcs)
  73{
  74        return -ENXIO;
  75}
  76static inline void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) { };
  77static inline void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) { };
  78static inline void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) { };
  79static inline void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) { };
  80static inline int rcar_du_vsp_map_fb(struct rcar_du_vsp *vsp,
  81                                     struct drm_framebuffer *fb,
  82                                     struct sg_table sg_tables[3])
  83{
  84        return -ENXIO;
  85}
  86static inline void rcar_du_vsp_unmap_fb(struct rcar_du_vsp *vsp,
  87                                        struct drm_framebuffer *fb,
  88                                        struct sg_table sg_tables[3])
  89{
  90}
  91#endif
  92
  93#endif /* __RCAR_DU_VSP_H__ */
  94