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

   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
  15struct rcar_du_format_info;
  16struct 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
  27enum rcar_du_plane_source {
  28        RCAR_DU_PLANE_MEMORY,
  29        RCAR_DU_PLANE_VSPD0,
  30        RCAR_DU_PLANE_VSPD1,
  31};
  32
  33struct rcar_du_plane {
  34        struct drm_plane plane;
  35        struct rcar_du_group *group;
  36};
  37
  38static 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 */
  50struct 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
  60static inline struct rcar_du_plane_state *
  61to_rcar_plane_state(struct drm_plane_state *state)
  62{
  63        return container_of(state, struct rcar_du_plane_state, state);
  64}
  65
  66int rcar_du_atomic_check_planes(struct drm_device *dev,
  67                                struct drm_atomic_state *state);
  68
  69int __rcar_du_plane_atomic_check(struct drm_plane *plane,
  70                                 struct drm_plane_state *state,
  71                                 const struct rcar_du_format_info **format);
  72
  73int rcar_du_planes_init(struct rcar_du_group *rgrp);
  74
  75void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
  76                           const struct rcar_du_plane_state *state);
  77
  78static 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__ */
  87