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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 <linux/mutex.h>
18
19#include <drm/drmP.h>
20#include <drm/drm_crtc.h>
21
22struct rcar_du_format_info;
23struct rcar_du_group;
24
25/* The RCAR DU has 8 hardware planes, shared between KMS planes and CRTCs. As
26 * using KMS planes requires at least one of the CRTCs being enabled, no more
27 * than 7 KMS planes can be available. We thus create 7 KMS planes and
28 * 9 software planes (one for each KMS planes and one for each CRTC).
29 */
30
31#define RCAR_DU_NUM_KMS_PLANES		7
32#define RCAR_DU_NUM_HW_PLANES		8
33#define RCAR_DU_NUM_SW_PLANES		9
34
35struct rcar_du_plane {
36	struct rcar_du_group *group;
37	struct drm_crtc *crtc;
38
39	bool enabled;
40
41	int hwindex;		/* 0-based, -1 means unused */
42	unsigned int alpha;
43	unsigned int colorkey;
44	unsigned int zpos;
45
46	const struct rcar_du_format_info *format;
47
48	unsigned long dma[2];
49	unsigned int pitch;
50
51	unsigned int width;
52	unsigned int height;
53
54	unsigned int src_x;
55	unsigned int src_y;
56	unsigned int dst_x;
57	unsigned int dst_y;
58};
59
60struct rcar_du_planes {
61	struct rcar_du_plane planes[RCAR_DU_NUM_SW_PLANES];
62	unsigned int free;
63	struct mutex lock;
64
65	struct drm_property *alpha;
66	struct drm_property *colorkey;
67	struct drm_property *zpos;
68};
69
70int rcar_du_planes_init(struct rcar_du_group *rgrp);
71int rcar_du_planes_register(struct rcar_du_group *rgrp);
72
73void rcar_du_plane_setup(struct rcar_du_plane *plane);
74void rcar_du_plane_update_base(struct rcar_du_plane *plane);
75void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
76				struct drm_framebuffer *fb);
77int rcar_du_plane_reserve(struct rcar_du_plane *plane,
78			  const struct rcar_du_format_info *format);
79void rcar_du_plane_release(struct rcar_du_plane *plane);
80
81#endif /* __RCAR_DU_PLANE_H__ */
82