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

   1 /*
   2  * rcar_du_plane.h  --  R-Car Display Unit Planes
   3  *
   4  * Copyright (C) 2013-2014 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_PLANE_H__
  15 #define __RCAR_DU_PLANE_H__
  16
  17 #include <drm/drmP.h>
  18 #include <drm/drm_crtc.h>
  19
  20 struct rcar_du_format_info;
  21 struct rcar_du_group;
  22
  23 /*
  24  * The RCAR DU has 8 hardware planes, shared between primary and overlay planes.
  25  * As using overlay planes requires at least one of the CRTCs being enabled, no
  26  * more than 7 overlay planes can be available. We thus create 1 primary plane
  27  * per CRTC and 7 overlay planes, for a total of up to 9 KMS planes.
  28  */
  29 #define RCAR_DU_NUM_KMS_PLANES          9
  30 #define RCAR_DU_NUM_HW_PLANES           8
  31
  32 enum rcar_du_plane_source {
  33         RCAR_DU_PLANE_MEMORY,
  34         RCAR_DU_PLANE_VSPD0,
  35         RCAR_DU_PLANE_VSPD1,
  36 };
  37
  38 struct rcar_du_plane {
  39         struct drm_plane plane;
  40         struct rcar_du_group *group;
  41 };
  42
  43 static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
  44 {
  45         return container_of(plane, struct rcar_du_plane, plane);
  46 }
  47
  48 /**
  49  * struct rcar_du_plane_state - Driver-specific plane state
  50  * @state: base DRM plane state
  51  * @format: information about the pixel format used by the plane
  52  * @hwindex: 0-based hardware plane index, -1 means unused
  53  * @alpha: value of the plane alpha property
  54  * @colorkey: value of the plane colorkey property
  55  */
  56 struct rcar_du_plane_state {
  57         struct drm_plane_state state;
  58
  59         const struct rcar_du_format_info *format;
  60         int hwindex;
  61         enum rcar_du_plane_source source;
  62
  63         unsigned int alpha;
  64         unsigned int colorkey;
  65 };
  66
  67 static inline struct rcar_du_plane_state *
  68 to_rcar_plane_state(struct drm_plane_state *state)
  69 {
  70         return container_of(state, struct rcar_du_plane_state, state);
  71 }
  72
  73 int rcar_du_atomic_check_planes(struct drm_device *dev,
  74                                 struct drm_atomic_state *state);
  75
  76 int __rcar_du_plane_atomic_check(struct drm_plane *plane,
  77                                  struct drm_plane_state *state,
  78                                  const struct rcar_du_format_info **format);
  79
  80 int rcar_du_planes_init(struct rcar_du_group *rgrp);
  81
  82 void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
  83                            const struct rcar_du_plane_state *state);
  84
  85 static inline void rcar_du_plane_setup(struct rcar_du_plane *plane)
  86 {
  87         struct rcar_du_plane_state *state =
  88                 to_rcar_plane_state(plane->plane.state);
  89
  90         return __rcar_du_plane_setup(plane->group, state);
  91 }
  92
  93 #endif /* __RCAR_DU_PLANE_H__ */