drivers/gpu/drm/rcar-du/rcar_du_vsp.h

   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
  20 struct rcar_du_format_info;
  21 struct rcar_du_vsp;
  22
  23 struct rcar_du_vsp_plane {
  24         struct drm_plane plane;
  25         struct rcar_du_vsp *vsp;
  26         unsigned int index;
  27 };
  28
  29 struct 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
  37 static 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  */
  50 struct 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
  60 static inline struct rcar_du_vsp_plane_state *
  61 to_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
  67 int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
  68                      unsigned int crtcs);
  69 void rcar_du_vsp_enable(struct rcar_du_crtc *crtc);
  70 void rcar_du_vsp_disable(struct rcar_du_crtc *crtc);
  71 void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc);
  72 void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc);
  73 #else
  74 static inline int rcar_du_vsp_init(struct rcar_du_vsp *vsp,
  75                                    struct device_node *np,
  76                                    unsigned int crtcs)
  77 {
  78         return -ENXIO;
  79 }
  80 static inline void rcar_du_vsp_enable(struct rcar_du_crtc *crtc) { };
  81 static inline void rcar_du_vsp_disable(struct rcar_du_crtc *crtc) { };
  82 static inline void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc) { };
  83 static inline void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc) { };
  84 #endif
  85
  86 #endif /* __RCAR_DU_VSP_H__ */