drivers/gpu/drm/i915/display/intel_dp.h

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2019 Intel Corporation
   4  */
   5
   6 #ifndef __INTEL_DP_H__
   7 #define __INTEL_DP_H__
   8
   9 #include <linux/types.h>
  10
  11 #include "i915_reg.h"
  12
  13 enum intel_output_format;
  14 enum pipe;
  15 enum port;
  16 struct drm_connector_state;
  17 struct drm_encoder;
  18 struct drm_i915_private;
  19 struct drm_modeset_acquire_ctx;
  20 struct drm_dp_vsc_sdp;
  21 struct intel_atomic_state;
  22 struct intel_connector;
  23 struct intel_crtc_state;
  24 struct intel_digital_port;
  25 struct intel_dp;
  26 struct intel_encoder;
  27
  28 struct link_config_limits {
  29         int min_rate, max_rate;
  30         int min_lane_count, max_lane_count;
  31         int min_bpp, max_bpp;
  32 };
  33
  34 void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
  35                                        struct intel_crtc_state *pipe_config,
  36                                        struct link_config_limits *limits);
  37 bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
  38                                   const struct drm_connector_state *conn_state);
  39 int intel_dp_min_bpp(enum intel_output_format output_format);
  40 bool intel_dp_init_connector(struct intel_digital_port *dig_port,
  41                              struct intel_connector *intel_connector);
  42 void intel_dp_set_link_params(struct intel_dp *intel_dp,
  43                               int link_rate, int lane_count);
  44 int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
  45                                             int link_rate, u8 lane_count);
  46 int intel_dp_retrain_link(struct intel_encoder *encoder,
  47                           struct drm_modeset_acquire_ctx *ctx);
  48 void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode);
  49 void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
  50                                            const struct intel_crtc_state *crtc_state);
  51 void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
  52                                            const struct intel_crtc_state *crtc_state,
  53                                            bool enable);
  54 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
  55 void intel_dp_encoder_shutdown(struct intel_encoder *intel_encoder);
  56 void intel_dp_encoder_flush_work(struct drm_encoder *encoder);
  57 int intel_dp_compute_config(struct intel_encoder *encoder,
  58                             struct intel_crtc_state *pipe_config,
  59                             struct drm_connector_state *conn_state);
  60 bool intel_dp_is_edp(struct intel_dp *intel_dp);
  61 bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state);
  62 bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
  63 enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *dig_port,
  64                                   bool long_hpd);
  65 void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
  66                             const struct drm_connector_state *conn_state);
  67 void intel_edp_backlight_off(const struct drm_connector_state *conn_state);
  68 void intel_dp_mst_suspend(struct drm_i915_private *dev_priv);
  69 void intel_dp_mst_resume(struct drm_i915_private *dev_priv);
  70 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
  71 int intel_dp_max_lane_count(struct intel_dp *intel_dp);
  72 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
  73
  74 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
  75                            u8 *link_bw, u8 *rate_select);
  76 bool intel_dp_source_supports_tps3(struct drm_i915_private *i915);
  77 bool intel_dp_source_supports_tps4(struct drm_i915_private *i915);
  78
  79 bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp);
  80 int intel_dp_link_required(int pixel_clock, int bpp);
  81 int intel_dp_max_data_rate(int max_link_rate, int max_lanes);
  82 bool intel_dp_can_bigjoiner(struct intel_dp *intel_dp);
  83 bool intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state,
  84                             const struct drm_connector_state *conn_state);
  85 void intel_dp_compute_psr_vsc_sdp(struct intel_dp *intel_dp,
  86                                   const struct intel_crtc_state *crtc_state,
  87                                   const struct drm_connector_state *conn_state,
  88                                   struct drm_dp_vsc_sdp *vsc);
  89 void intel_write_dp_vsc_sdp(struct intel_encoder *encoder,
  90                             const struct intel_crtc_state *crtc_state,
  91                             const struct drm_dp_vsc_sdp *vsc);
  92 void intel_dp_set_infoframes(struct intel_encoder *encoder, bool enable,
  93                              const struct intel_crtc_state *crtc_state,
  94                              const struct drm_connector_state *conn_state);
  95 void intel_read_dp_sdp(struct intel_encoder *encoder,
  96                        struct intel_crtc_state *crtc_state,
  97                        unsigned int type);
  98 bool intel_digital_port_connected(struct intel_encoder *encoder);
  99
 100 static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
 101 {
 102         return ~((1 << lane_count) - 1) & 0xf;
 103 }
 104
 105 u32 intel_dp_mode_to_fec_clock(u32 mode_clock);
 106
 107 void intel_ddi_update_pipe(struct intel_atomic_state *state,
 108                            struct intel_encoder *encoder,
 109                            const struct intel_crtc_state *crtc_state,
 110                            const struct drm_connector_state *conn_state);
 111
 112 bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
 113                                     struct intel_crtc_state *crtc_state);
 114 void intel_dp_sync_state(struct intel_encoder *encoder,
 115                          const struct intel_crtc_state *crtc_state);
 116
 117 void intel_dp_check_frl_training(struct intel_dp *intel_dp);
 118 void intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
 119                                  const struct intel_crtc_state *crtc_state);
 120 void intel_dp_phy_test(struct intel_encoder *encoder);
 121
 122 #endif /* __INTEL_DP_H__ */