1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2017 NVIDIA CORPORATION.  All rights reserved.
 4 */
 5
 6#ifndef TEGRA_HUB_H
 7#define TEGRA_HUB_H 1
 8
 9#include <drm/drm_plane.h>
10
11#include "plane.h"
12
13struct tegra_dc;
14
15struct tegra_windowgroup {
16	unsigned int usecount;
17	struct mutex lock;
18
19	unsigned int index;
20	struct device *parent;
21	struct reset_control *rst;
22};
23
24struct tegra_shared_plane {
25	struct tegra_plane base;
26	struct tegra_windowgroup *wgrp;
27};
28
29static inline struct tegra_shared_plane *
30to_tegra_shared_plane(struct drm_plane *plane)
31{
32	return container_of(plane, struct tegra_shared_plane, base.base);
33}
34
35struct tegra_display_hub_soc {
36	unsigned int num_wgrps;
37	bool supports_dsc;
38};
39
40struct tegra_display_hub {
41	struct drm_private_obj base;
42	struct host1x_client client;
43	struct clk *clk_disp;
44	struct clk *clk_dsc;
45	struct clk *clk_hub;
46	struct reset_control *rst;
47
48	unsigned int num_heads;
49	struct clk **clk_heads;
50
51	const struct tegra_display_hub_soc *soc;
52	struct tegra_windowgroup *wgrps;
53};
54
55static inline struct tegra_display_hub *
56to_tegra_display_hub(struct host1x_client *client)
57{
58	return container_of(client, struct tegra_display_hub, client);
59}
60
61struct 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
69static inline struct tegra_display_hub_state *
70to_tegra_display_hub_state(struct drm_private_state *priv)
71{
72	return container_of(priv, struct tegra_display_hub_state, base);
73}
74
75struct tegra_dc;
76struct tegra_plane;
77
78int tegra_display_hub_prepare(struct tegra_display_hub *hub);
79void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
80
81struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
82					    struct tegra_dc *dc,
83					    unsigned int wgrp,
84					    unsigned int index);
85
86int tegra_display_hub_atomic_check(struct drm_device *drm,
87				   struct drm_atomic_state *state);
88void 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 */