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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__ */