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__ */