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Linux kernel mirror (for testing)
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linux
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/drmP.h>
10#include <drm/drm_plane.h>
11
12#include "plane.h"
13
14struct tegra_dc;
15
16struct tegra_windowgroup {
17 unsigned int usecount;
18 struct mutex lock;
19
20 unsigned int index;
21 struct device *parent;
22 struct reset_control *rst;
23};
24
25struct tegra_shared_plane {
26 struct tegra_plane base;
27 struct tegra_windowgroup *wgrp;
28};
29
30static inline struct tegra_shared_plane *
31to_tegra_shared_plane(struct drm_plane *plane)
32{
33 return container_of(plane, struct tegra_shared_plane, base.base);
34}
35
36struct tegra_display_hub_soc {
37 unsigned int num_wgrps;
38 bool supports_dsc;
39};
40
41struct tegra_display_hub {
42 struct drm_private_obj base;
43 struct host1x_client client;
44 struct clk *clk_disp;
45 struct clk *clk_dsc;
46 struct clk *clk_hub;
47 struct reset_control *rst;
48
49 unsigned int num_heads;
50 struct clk **clk_heads;
51
52 const struct tegra_display_hub_soc *soc;
53 struct tegra_windowgroup *wgrps;
54};
55
56static inline struct tegra_display_hub *
57to_tegra_display_hub(struct host1x_client *client)
58{
59 return container_of(client, struct tegra_display_hub, client);
60}
61
62struct tegra_display_hub_state {
63 struct drm_private_state base;
64
65 struct tegra_dc *dc;
66 unsigned long rate;
67 struct clk *clk;
68};
69
70static inline struct tegra_display_hub_state *
71to_tegra_display_hub_state(struct drm_private_state *priv)
72{
73 return container_of(priv, struct tegra_display_hub_state, base);
74}
75
76struct tegra_dc;
77struct tegra_plane;
78
79int tegra_display_hub_prepare(struct tegra_display_hub *hub);
80void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
81
82struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
83 struct tegra_dc *dc,
84 unsigned int wgrp,
85 unsigned int index);
86
87int tegra_display_hub_atomic_check(struct drm_device *drm,
88 struct drm_atomic_state *state);
89void tegra_display_hub_atomic_commit(struct drm_device *drm,
90 struct drm_atomic_state *state);
91
92#define DC_CMD_IHUB_COMMON_MISC_CTL 0x068
93#define LATENCY_EVENT (1 << 3)
94
95#define DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER 0x451
96#define CURS_SLOTS(x) (((x) & 0xff) << 8)
97#define WGRP_SLOTS(x) (((x) & 0xff) << 0)
98
99#endif /* TEGRA_HUB_H */