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 /*
24 * The RCAR DU has 8 hardware planes, shared between primary and overlay planes.
25 * As using overlay planes requires at least one of the CRTCs being enabled, no
26 * more than 7 overlay planes can be available. We thus create 1 primary plane
27 * per CRTC and 7 overlay planes, for a total of up to 9 KMS planes.
28 */
29 #define RCAR_DU_NUM_KMS_PLANES 9
30 #define RCAR_DU_NUM_HW_PLANES 8
31
32 enum rcar_du_plane_source {
33 RCAR_DU_PLANE_MEMORY,
34 RCAR_DU_PLANE_VSPD0,
35 RCAR_DU_PLANE_VSPD1,
36 };
37
38 struct rcar_du_plane {
39 struct drm_plane plane;
40 struct rcar_du_group *group;
41 };
42
to_rcar_plane(struct drm_plane * plane)43 static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
44 {
45 return container_of(plane, struct rcar_du_plane, plane);
46 }
47
48 /**
49 * struct rcar_du_plane_state - Driver-specific plane state
50 * @state: base DRM plane state
51 * @format: information about the pixel format used by the plane
52 * @hwindex: 0-based hardware plane index, -1 means unused
53 * @colorkey: value of the plane colorkey property
54 */
55 struct 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 colorkey;
63 };
64
65 static inline struct rcar_du_plane_state *
to_rcar_plane_state(struct drm_plane_state * state)66 to_rcar_plane_state(struct drm_plane_state *state)
67 {
68 return container_of(state, struct rcar_du_plane_state, state);
69 }
70
71 int rcar_du_atomic_check_planes(struct drm_device *dev,
72 struct drm_atomic_state *state);
73
74 int __rcar_du_plane_atomic_check(struct drm_plane *plane,
75 struct drm_plane_state *state,
76 const struct rcar_du_format_info **format);
77
78 int rcar_du_planes_init(struct rcar_du_group *rgrp);
79
80 void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
81 const struct rcar_du_plane_state *state);
82
rcar_du_plane_setup(struct rcar_du_plane * plane)83 static inline void rcar_du_plane_setup(struct rcar_du_plane *plane)
84 {
85 struct rcar_du_plane_state *state =
86 to_rcar_plane_state(plane->plane.state);
87
88 return __rcar_du_plane_setup(plane->group, state);
89 }
90
91 #endif /* __RCAR_DU_PLANE_H__ */
92