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

   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
  20struct rcar_du_format_info;
  21struct 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
  31enum rcar_du_plane_source {
  32        RCAR_DU_PLANE_MEMORY,
  33        RCAR_DU_PLANE_VSPD0,
  34        RCAR_DU_PLANE_VSPD1,
  35};
  36
  37struct rcar_du_plane {
  38        struct drm_plane plane;
  39        struct rcar_du_group *group;
  40};
  41
  42static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
  43{
  44        return container_of(plane, struct rcar_du_plane, plane);
  45}
  46
  47/**
  48 * struct rcar_du_plane_state - Driver-specific plane state
  49 * @state: base DRM plane state
  50 * @format: information about the pixel format used by the plane
  51 * @hwindex: 0-based hardware plane index, -1 means unused
  52 * @alpha: value of the plane alpha property
  53 * @colorkey: value of the plane colorkey property
  54 */
  55struct rcar_du_plane_state {
  56        struct drm_plane_state state;
  57
  58        const struct rcar_du_format_info *format;
  59        int hwindex;
  60        enum rcar_du_plane_source source;
  61
  62        unsigned int alpha;
  63        unsigned int colorkey;
  64};
  65
  66static inline struct rcar_du_plane_state *
  67to_rcar_plane_state(struct drm_plane_state *state)
  68{
  69        return container_of(state, struct rcar_du_plane_state, state);
  70}
  71
  72int rcar_du_atomic_check_planes(struct drm_device *dev,
  73                                struct drm_atomic_state *state);
  74
  75int rcar_du_planes_init(struct rcar_du_group *rgrp);
  76
  77void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
  78                           const struct rcar_du_plane_state *state);
  79
  80static inline void rcar_du_plane_setup(struct rcar_du_plane *plane)
  81{
  82        struct rcar_du_plane_state *state =
  83                to_rcar_plane_state(plane->plane.state);
  84
  85        return __rcar_du_plane_setup(plane->group, state);
  86}
  87
  88#endif /* __RCAR_DU_PLANE_H__ */
  89