intel_dp_tunnel.h source code [linux/drivers/gpu/drm/i915/display/intel_dp_tunnel.h]

1	/ SPDX-License-Identifier: MIT /
2	/*
3	* Copyright © 2023 Intel Corporation
4	*/
5
6	#ifndef __INTEL_DP_TUNNEL_H__
7	#define __INTEL_DP_TUNNEL_H__
8
9	#include <linux/errno.h>
10	#include <linux/types.h>
11
12	struct drm_i915_private;
13	struct drm_connector_state;
14	struct drm_modeset_acquire_ctx;
15
16	struct intel_atomic_state;
17	struct intel_connector;
18	struct intel_crtc;
19	struct intel_crtc_state;
20	struct intel_dp;
21	struct intel_encoder;
22	struct intel_link_bw_limits;
23
24	#if defined(CONFIG_DRM_I915_DP_TUNNEL) && defined(I915)
25
26	int intel_dp_tunnel_detect(struct intel_dp intel_dp, struct* drm_modeset_acquire_ctx *ctx);
27	void intel_dp_tunnel_disconnect(struct intel_dp *intel_dp);
28	void intel_dp_tunnel_destroy(struct intel_dp *intel_dp);
29	void intel_dp_tunnel_resume(struct intel_dp *intel_dp,
30	const struct intel_crtc_state *crtc_state,
31	bool dpcd_updated);
32	void intel_dp_tunnel_suspend(struct intel_dp *intel_dp);
33
34	bool intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp *intel_dp);
35
36	void
37	intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state *state);
38
39	int intel_dp_tunnel_atomic_compute_stream_bw(struct intel_atomic_state *state,
40	struct intel_dp *intel_dp,
41	const struct intel_connector *connector,
42	struct intel_crtc_state *crtc_state);
43	void intel_dp_tunnel_atomic_clear_stream_bw(struct intel_atomic_state *state,
44	struct intel_crtc_state *crtc_state);
45
46	int intel_dp_tunnel_atomic_add_state_for_crtc(struct intel_atomic_state *state,
47	struct intel_crtc *crtc);
48	int intel_dp_tunnel_atomic_check_link(struct intel_atomic_state *state,
49	struct intel_link_bw_limits *limits);
50	int intel_dp_tunnel_atomic_check_state(struct intel_atomic_state *state,
51	struct intel_dp *intel_dp,
52	struct intel_connector *connector);
53
54	void intel_dp_tunnel_atomic_alloc_bw(struct intel_atomic_state *state);
55
56	int intel_dp_tunnel_mgr_init(struct drm_i915_private *i915);
57	void intel_dp_tunnel_mgr_cleanup(struct drm_i915_private *i915);
58
59	#else
60
61	static inline int
62	intel_dp_tunnel_detect(struct intel_dp intel_dp, struct* drm_modeset_acquire_ctx *ctx)
63	{
64	return -EOPNOTSUPP;
65	}
66
67	static inline void intel_dp_tunnel_disconnect(struct intel_dp *intel_dp) {}
68	static inline void intel_dp_tunnel_destroy(struct intel_dp *intel_dp) {}
69	static inline void intel_dp_tunnel_resume(struct intel_dp *intel_dp,
70	const struct intel_crtc_state *crtc_state,
71	bool dpcd_updated) {}
72	static inline void intel_dp_tunnel_suspend(struct intel_dp *intel_dp) {}
73
74	static inline bool intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp *intel_dp)
75	{
76	return false;
77	}
78
79	static inline void
80	intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state *state) {}
81
82	static inline int
83	intel_dp_tunnel_atomic_compute_stream_bw(struct intel_atomic_state *state,
84	struct intel_dp *intel_dp,
85	const struct intel_connector *connector,
86	struct intel_crtc_state *crtc_state)
87	{
88	return `0`;
89	}
90
91	static inline void
92	intel_dp_tunnel_atomic_clear_stream_bw(struct intel_atomic_state *state,
93	struct intel_crtc_state *crtc_state) {}
94
95	static inline int
96	intel_dp_tunnel_atomic_add_state_for_crtc(struct intel_atomic_state *state,
97	struct intel_crtc *crtc)
98	{
99	return `0`;
100	}
101
102	static inline int
103	intel_dp_tunnel_atomic_check_link(struct intel_atomic_state *state,
104	struct intel_link_bw_limits *limits)
105	{
106	return `0`;
107	}
108
109	static inline int
110	intel_dp_tunnel_atomic_check_state(struct intel_atomic_state *state,
111	struct intel_dp *intel_dp,
112	struct intel_connector *connector)
113	{
114	return `0`;
115	}
116
117	static inline int
118	intel_dp_tunnel_atomic_alloc_bw(struct intel_atomic_state *state)
119	{
120	return `0`;
121	}
122
123	static inline int
124	intel_dp_tunnel_mgr_init(struct drm_i915_private *i915)
125	{
126	return `0`;
127	}
128
129	static inline void intel_dp_tunnel_mgr_cleanup(struct drm_i915_private *i915) {}
130
131	#endif /* CONFIG_DRM_I915_DP_TUNNEL */
132
133	#endif /* __INTEL_DP_TUNNEL_H__ */
134

source code of linux/drivers/gpu/drm/i915/display/intel_dp_tunnel.h