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

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * rcar_du_plane.h  --  R-Car Display Unit Planes
   4  *
   5  * Copyright (C) 2013-2014 Renesas Electronics Corporation
   6  *
   7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8  */
   9
  10 #ifndef __RCAR_DU_PLANE_H__
  11 #define __RCAR_DU_PLANE_H__
  12
  13 #include <drm/drm_plane.h>
  14
  15 struct rcar_du_format_info;
  16 struct rcar_du_group;
  17
  18 /*
  19  * The RCAR DU has 8 hardware planes, shared between primary and overlay planes.
  20  * As using overlay planes requires at least one of the CRTCs being enabled, no
  21  * more than 7 overlay planes can be available. We thus create 1 primary plane
  22  * per CRTC and 7 overlay planes, for a total of up to 9 KMS planes.
  23  */
  24 #define RCAR_DU_NUM_KMS_PLANES          9
  25 #define RCAR_DU_NUM_HW_PLANES           8
  26
  27 enum rcar_du_plane_source {
  28         RCAR_DU_PLANE_MEMORY,
  29         RCAR_DU_PLANE_VSPD0,
  30         RCAR_DU_PLANE_VSPD1,
  31 };
  32
  33 struct rcar_du_plane {
  34         struct drm_plane plane;
  35         struct rcar_du_group *group;
  36 };
  37
  38 static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
  39 {
  40         return container_of(plane, struct rcar_du_plane, plane);
  41 }
  42
  43 /**
  44  * struct rcar_du_plane_state - Driver-specific plane state
  45  * @state: base DRM plane state
  46  * @format: information about the pixel format used by the plane
  47  * @hwindex: 0-based hardware plane index, -1 means unused
  48  * @colorkey: value of the plane colorkey property
  49  */
  50 struct rcar_du_plane_state {
  51         struct drm_plane_state state;
  52
  53         const struct rcar_du_format_info *format;
  54         int hwindex;
  55         enum rcar_du_plane_source source;
  56
  57         unsigned int colorkey;
  58 };
  59
  60 static inline struct rcar_du_plane_state *
  61 to_rcar_plane_state(struct drm_plane_state *state)
  62 {
  63         return container_of(state, struct rcar_du_plane_state, state);
  64 }
  65
  66 int rcar_du_atomic_check_planes(struct drm_device *dev,
  67                                 struct drm_atomic_state *state);
  68
  69 int __rcar_du_plane_atomic_check(struct drm_plane *plane,
  70                                  struct drm_plane_state *state,
  71                                  const struct rcar_du_format_info **format);
  72
  73 int rcar_du_planes_init(struct rcar_du_group *rgrp);
  74
  75 void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
  76                            const struct rcar_du_plane_state *state);
  77
  78 static inline void rcar_du_plane_setup(struct rcar_du_plane *plane)
  79 {
  80         struct rcar_du_plane_state *state =
  81                 to_rcar_plane_state(plane->plane.state);
  82
  83         return __rcar_du_plane_setup(plane->group, state);
  84 }
  85
  86 #endif /* __RCAR_DU_PLANE_H__ */