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 <drm/i915_drm.h> 12 13 #include "i915_reg.h" 14 15 enum pipe; 16 struct drm_connector_state; 17 struct drm_encoder; 18 struct drm_i915_private; 19 struct drm_modeset_acquire_ctx; 20 struct intel_connector; 21 struct intel_crtc_state; 22 struct intel_digital_port; 23 struct intel_dp; 24 struct intel_encoder; 25 26 struct link_config_limits { 27 int min_clock, max_clock; 28 int min_lane_count, max_lane_count; 29 int min_bpp, max_bpp; 30 }; 31 32 void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp, 33 struct intel_crtc_state *pipe_config, 34 struct link_config_limits *limits); 35 bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state, 36 const struct drm_connector_state *conn_state); 37 int intel_dp_min_bpp(const struct intel_crtc_state *crtc_state); 38 bool intel_dp_port_enabled(struct drm_i915_private *dev_priv, 39 i915_reg_t dp_reg, enum port port, 40 enum pipe *pipe); 41 bool intel_dp_init(struct drm_i915_private *dev_priv, i915_reg_t output_reg, 42 enum port port); 43 bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port, 44 struct intel_connector *intel_connector); 45 void intel_dp_set_link_params(struct intel_dp *intel_dp, 46 int link_rate, u8 lane_count, 47 bool link_mst); 48 int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, 49 int link_rate, u8 lane_count); 50 int intel_dp_retrain_link(struct intel_encoder *encoder, 51 struct drm_modeset_acquire_ctx *ctx); 52 void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode); 53 void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp, 54 const struct intel_crtc_state *crtc_state, 55 bool enable); 56 void intel_dp_encoder_reset(struct drm_encoder *encoder); 57 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder); 58 void intel_dp_encoder_flush_work(struct drm_encoder *encoder); 59 int intel_dp_compute_config(struct intel_encoder *encoder, 60 struct intel_crtc_state *pipe_config, 61 struct drm_connector_state *conn_state); 62 bool intel_dp_is_edp(struct intel_dp *intel_dp); 63 bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port); 64 enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, 65 bool long_hpd); 66 void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state, 67 const struct drm_connector_state *conn_state); 68 void intel_edp_backlight_off(const struct drm_connector_state *conn_state); 69 void intel_edp_panel_vdd_on(struct intel_dp *intel_dp); 70 void intel_edp_panel_on(struct intel_dp *intel_dp); 71 void intel_edp_panel_off(struct intel_dp *intel_dp); 72 void intel_dp_mst_suspend(struct drm_i915_private *dev_priv); 73 void intel_dp_mst_resume(struct drm_i915_private *dev_priv); 74 int intel_dp_max_link_rate(struct intel_dp *intel_dp); 75 int intel_dp_max_lane_count(struct intel_dp *intel_dp); 76 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate); 77 void intel_power_sequencer_reset(struct drm_i915_private *dev_priv); 78 u32 intel_dp_pack_aux(const u8 *src, int src_bytes); 79 80 void intel_edp_drrs_enable(struct intel_dp *intel_dp, 81 const struct intel_crtc_state *crtc_state); 82 void intel_edp_drrs_disable(struct intel_dp *intel_dp, 83 const struct intel_crtc_state *crtc_state); 84 void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv, 85 unsigned int frontbuffer_bits); 86 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv, 87 unsigned int frontbuffer_bits); 88 89 void 90 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, 91 u8 dp_train_pat); 92 void 93 intel_dp_set_signal_levels(struct intel_dp *intel_dp); 94 void intel_dp_set_idle_link_train(struct intel_dp *intel_dp); 95 u8 96 intel_dp_voltage_max(struct intel_dp *intel_dp); 97 u8 98 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, u8 voltage_swing); 99 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, 100 u8 *link_bw, u8 *rate_select); 101 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp); 102 bool intel_dp_source_supports_hbr3(struct intel_dp *intel_dp); 103 bool 104 intel_dp_get_link_status(struct intel_dp *intel_dp, u8 *link_status); 105 106 bool intel_dp_read_dpcd(struct intel_dp *intel_dp); 107 bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp); 108 int intel_dp_link_required(int pixel_clock, int bpp); 109 int intel_dp_max_data_rate(int max_link_clock, int max_lanes); 110 bool intel_digital_port_connected(struct intel_encoder *encoder); 111 112 static inline unsigned int intel_dp_unused_lane_mask(int lane_count) 113 { 114 return ~((1 << lane_count) - 1) & 0xf; 115 } 116 117 u32 intel_dp_mode_to_fec_clock(u32 mode_clock); 118 119 #endif /* __INTEL_DP_H__ */ 120