tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
17struct tegra_dc;
18
19struct 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
28struct tegra_shared_plane {
29 struct tegra_plane base;
30 struct tegra_windowgroup *wgrp;
31};
32
33static inline struct tegra_shared_plane *
34to_tegra_shared_plane(struct drm_plane *plane)
35{
36 return container_of(plane, struct tegra_shared_plane, base.base);
37}
38
39struct tegra_display_hub_soc {
40 unsigned int num_wgrps;
41 bool supports_dsc;
42};
43
44struct tegra_display_hub {
45 struct drm_private_obj base;
46 struct host1x_client client;
47 struct clk *clk_disp;
48 struct clk *clk_dsc;
49 struct clk *clk_hub;
50 struct reset_control *rst;
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 */