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