xref: /openbmc/linux/drivers/gpu/drm/tegra/hub.h (revision 0f52fc3f)
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 
13 struct tegra_dc;
14 
15 struct tegra_windowgroup {
16 	unsigned int usecount;
17 	struct mutex lock;
18 
19 	unsigned int index;
20 	struct host1x_client *parent;
21 	struct reset_control *rst;
22 };
23 
24 struct tegra_shared_plane {
25 	struct tegra_plane base;
26 	struct tegra_windowgroup *wgrp;
27 };
28 
29 static inline struct tegra_shared_plane *
to_tegra_shared_plane(struct drm_plane * plane)30 to_tegra_shared_plane(struct drm_plane *plane)
31 {
32 	return container_of(plane, struct tegra_shared_plane, base.base);
33 }
34 
35 struct tegra_display_hub_soc {
36 	unsigned int num_wgrps;
37 	bool supports_dsc;
38 };
39 
40 struct 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 
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_plane;
76 
77 int tegra_display_hub_prepare(struct tegra_display_hub *hub);
78 void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
79 
80 struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
81 					    struct tegra_dc *dc,
82 					    unsigned int wgrp,
83 					    unsigned int index);
84 
85 int tegra_display_hub_atomic_check(struct drm_device *drm,
86 				   struct drm_atomic_state *state);
87 void tegra_display_hub_atomic_commit(struct drm_device *drm,
88 				     struct drm_atomic_state *state);
89 
90 #define DC_CMD_IHUB_COMMON_MISC_CTL 0x068
91 #define  LATENCY_EVENT (1 << 3)
92 
93 #define DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER 0x451
94 #define  CURS_SLOTS(x) (((x) & 0xff) << 8)
95 #define  WGRP_SLOTS(x) (((x) & 0xff) << 0)
96 
97 #endif /* TEGRA_HUB_H */
98