1 /*
2 * Copyright (C) 2017 NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 #ifndef TEGRA_HUB_H
10 #define TEGRA_HUB_H 1
11
12 #include <drm/drmP.h>
13 #include <drm/drm_plane.h>
14
15 #include "plane.h"
16
17 struct tegra_dc;
18
19 struct tegra_windowgroup {
20 unsigned int usecount;
21 struct mutex lock;
22
23 unsigned int index;
24 struct device *parent;
25 struct reset_control *rst;
26 };
27
28 struct tegra_shared_plane {
29 struct tegra_plane base;
30 struct tegra_windowgroup *wgrp;
31 };
32
33 static inline struct tegra_shared_plane *
to_tegra_shared_plane(struct drm_plane * plane)34 to_tegra_shared_plane(struct drm_plane *plane)
35 {
36 return container_of(plane, struct tegra_shared_plane, base.base);
37 }
38
39 struct tegra_display_hub_soc {
40 unsigned int num_wgrps;
41 };
42
43 struct tegra_display_hub {
44 struct drm_private_obj base;
45 struct host1x_client client;
46 struct clk *clk_disp;
47 struct clk *clk_dsc;
48 struct clk *clk_hub;
49 struct reset_control *rst;
50
51 const struct tegra_display_hub_soc *soc;
52 struct tegra_windowgroup *wgrps;
53 };
54
55 static inline struct tegra_display_hub *
to_tegra_display_hub(struct host1x_client * client)56 to_tegra_display_hub(struct host1x_client *client)
57 {
58 return container_of(client, struct tegra_display_hub, client);
59 }
60
61 struct tegra_display_hub_state {
62 struct drm_private_state base;
63
64 struct tegra_dc *dc;
65 unsigned long rate;
66 struct clk *clk;
67 };
68
69 static inline struct tegra_display_hub_state *
to_tegra_display_hub_state(struct drm_private_state * priv)70 to_tegra_display_hub_state(struct drm_private_state *priv)
71 {
72 return container_of(priv, struct tegra_display_hub_state, base);
73 }
74
75 struct tegra_dc;
76 struct tegra_plane;
77
78 int tegra_display_hub_prepare(struct tegra_display_hub *hub);
79 void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
80
81 struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
82 struct tegra_dc *dc,
83 unsigned int wgrp,
84 unsigned int index);
85
86 int tegra_display_hub_atomic_check(struct drm_device *drm,
87 struct drm_atomic_state *state);
88 void tegra_display_hub_atomic_commit(struct drm_device *drm,
89 struct drm_atomic_state *state);
90
91 #define DC_CMD_IHUB_COMMON_MISC_CTL 0x068
92 #define LATENCY_EVENT (1 << 3)
93
94 #define DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER 0x451
95 #define CURS_SLOTS(x) (((x) & 0xff) << 8)
96 #define WGRP_SLOTS(x) (((x) & 0xff) << 0)
97
98 #endif /* TEGRA_HUB_H */
99
