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_connector_state;
13 struct drm_modeset_acquire_ctx;
14 struct intel_atomic_state;
15 struct intel_connector;
16 struct intel_crtc;
17 struct intel_crtc_state;
18 struct intel_display;
19 struct intel_dp;
20 struct intel_encoder;
21 struct intel_link_bw_limits;
22
23 #if (IS_ENABLED(CONFIG_DRM_I915_DP_TUNNEL) && defined(I915)) || \
24 (IS_ENABLED(CONFIG_DRM_XE_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 int 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 intel_display *display);
57 void intel_dp_tunnel_mgr_cleanup(struct intel_display *display);
58
59 #else
60
61 static inline int
intel_dp_tunnel_detect(struct intel_dp * intel_dp,struct drm_modeset_acquire_ctx * ctx)62 intel_dp_tunnel_detect(struct intel_dp *intel_dp, struct drm_modeset_acquire_ctx *ctx)
63 {
64 return -EOPNOTSUPP;
65 }
66
intel_dp_tunnel_disconnect(struct intel_dp * intel_dp)67 static inline void intel_dp_tunnel_disconnect(struct intel_dp *intel_dp) {}
intel_dp_tunnel_destroy(struct intel_dp * intel_dp)68 static inline void intel_dp_tunnel_destroy(struct intel_dp *intel_dp) {}
intel_dp_tunnel_resume(struct intel_dp * intel_dp,const struct intel_crtc_state * crtc_state,bool dpcd_updated)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) {}
intel_dp_tunnel_suspend(struct intel_dp * intel_dp)72 static inline void intel_dp_tunnel_suspend(struct intel_dp *intel_dp) {}
73
intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp * intel_dp)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
intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state * state)80 intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state *state) {}
81
82 static inline int
intel_dp_tunnel_atomic_compute_stream_bw(struct intel_atomic_state * state,struct intel_dp * intel_dp,const struct intel_connector * connector,struct intel_crtc_state * crtc_state)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 int
intel_dp_tunnel_atomic_clear_stream_bw(struct intel_atomic_state * state,struct intel_crtc_state * crtc_state)92 intel_dp_tunnel_atomic_clear_stream_bw(struct intel_atomic_state *state,
93 struct intel_crtc_state *crtc_state)
94 {
95 return 0;
96 }
97
98 static inline int
intel_dp_tunnel_atomic_add_state_for_crtc(struct intel_atomic_state * state,struct intel_crtc * crtc)99 intel_dp_tunnel_atomic_add_state_for_crtc(struct intel_atomic_state *state,
100 struct intel_crtc *crtc)
101 {
102 return 0;
103 }
104
105 static inline int
intel_dp_tunnel_atomic_check_link(struct intel_atomic_state * state,struct intel_link_bw_limits * limits)106 intel_dp_tunnel_atomic_check_link(struct intel_atomic_state *state,
107 struct intel_link_bw_limits *limits)
108 {
109 return 0;
110 }
111
112 static inline int
intel_dp_tunnel_atomic_check_state(struct intel_atomic_state * state,struct intel_dp * intel_dp,struct intel_connector * connector)113 intel_dp_tunnel_atomic_check_state(struct intel_atomic_state *state,
114 struct intel_dp *intel_dp,
115 struct intel_connector *connector)
116 {
117 return 0;
118 }
119
120 static inline int
intel_dp_tunnel_atomic_alloc_bw(struct intel_atomic_state * state)121 intel_dp_tunnel_atomic_alloc_bw(struct intel_atomic_state *state)
122 {
123 return 0;
124 }
125
126 static inline int
intel_dp_tunnel_mgr_init(struct intel_display * display)127 intel_dp_tunnel_mgr_init(struct intel_display *display)
128 {
129 return 0;
130 }
131
intel_dp_tunnel_mgr_cleanup(struct intel_display * display)132 static inline void intel_dp_tunnel_mgr_cleanup(struct intel_display *display) {}
133
134 #endif /* CONFIG_DRM_I915_DP_TUNNEL || CONFIG_DRM_XE_DP_TUNNEL */
135
136 #endif /* __INTEL_DP_TUNNEL_H__ */
137