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 /* The RCAR DU has 8 hardware planes, shared between primary and overlay planes.
  24  * As using overlay planes requires at least one of the CRTCs being enabled, no
  25  * more than 7 overlay planes can be available. We thus create 1 primary plane
  26  * per CRTC and 7 overlay planes, for a total of up to 9 KMS planes.
  27  */
  28 #define RCAR_DU_NUM_KMS_PLANES          9
  29 #define RCAR_DU_NUM_HW_PLANES           8
  30
  31 struct rcar_du_plane {
  32         struct drm_plane plane;
  33         struct rcar_du_group *group;
  34 };
  35
  36 static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
  37 {
  38         return container_of(plane, struct rcar_du_plane, plane);
  39 }
  40
  41 /**
  42  * struct rcar_du_plane_state - Driver-specific plane state
  43  * @state: base DRM plane state
  44  * @format: information about the pixel format used by the plane
  45  * @hwindex: 0-based hardware plane index, -1 means unused
  46  * @alpha: value of the plane alpha property
  47  * @colorkey: value of the plane colorkey property
  48  * @zpos: value of the plane zpos 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
  56         unsigned int alpha;
  57         unsigned int colorkey;
  58         unsigned int zpos;
  59 };
  60
  61 static inline struct rcar_du_plane_state *
  62 to_rcar_plane_state(struct drm_plane_state *state)
  63 {
  64         return container_of(state, struct rcar_du_plane_state, state);
  65 }
  66
  67 int rcar_du_planes_init(struct rcar_du_group *rgrp);
  68
  69 void rcar_du_plane_setup(struct rcar_du_plane *plane);
  70
  71 #endif /* __RCAR_DU_PLANE_H__ */