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intel_dp.h revision 1.3 
      1 /*	$NetBSD: intel_dp.h,v 1.3 2021/12/19 11:38:03 riastradh Exp $	*/
      2 
      3 /* SPDX-License-Identifier: MIT */
      4 /*
      5  * Copyright  2019 Intel Corporation
      6  */
      7 
      8 #ifndef __INTEL_DP_H__
      9 #define __INTEL_DP_H__
     10 
     11 #include <linux/types.h>
     12 
     13 #include <drm/i915_drm.h>
     14 
     15 #include "i915_reg.h"
     16 
     17 #include <sys/file.h>
     18 #define	pipe	pipe_drmhack	/* see intel_display.h */
     19 
     20 enum pipe;
     21 enum port;
     22 struct drm_connector_state;
     23 struct drm_encoder;
     24 struct drm_i915_private;
     25 struct drm_modeset_acquire_ctx;
     26 struct intel_connector;
     27 struct intel_crtc_state;
     28 struct intel_digital_port;
     29 struct intel_dp;
     30 struct intel_encoder;
     31 
     32 struct link_config_limits {
     33 	int min_clock, max_clock;
     34 	int min_lane_count, max_lane_count;
     35 	int min_bpp, max_bpp;
     36 };
     37 
     38 void intel_dp_adjust_compliance_config(struct intel_dp *intel_dp,
     39 				       struct intel_crtc_state *pipe_config,
     40 				       struct link_config_limits *limits);
     41 bool intel_dp_limited_color_range(const struct intel_crtc_state *crtc_state,
     42 				  const struct drm_connector_state *conn_state);
     43 int intel_dp_min_bpp(const struct intel_crtc_state *crtc_state);
     44 bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
     45 			   i915_reg_t dp_reg, enum port port,
     46 			   enum pipe *pipe);
     47 bool intel_dp_init(struct drm_i915_private *dev_priv, i915_reg_t output_reg,
     48 		   enum port port);
     49 bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
     50 			     struct intel_connector *intel_connector);
     51 void intel_dp_set_link_params(struct intel_dp *intel_dp,
     52 			      int link_rate, u8 lane_count,
     53 			      bool link_mst);
     54 int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
     55 					    int link_rate, u8 lane_count);
     56 int intel_dp_retrain_link(struct intel_encoder *encoder,
     57 			  struct drm_modeset_acquire_ctx *ctx);
     58 void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
     59 void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp,
     60 					   const struct intel_crtc_state *crtc_state,
     61 					   bool enable);
     62 void intel_dp_encoder_reset(struct drm_encoder *encoder);
     63 void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder);
     64 void intel_dp_encoder_flush_work(struct drm_encoder *encoder);
     65 int intel_dp_compute_config(struct intel_encoder *encoder,
     66 			    struct intel_crtc_state *pipe_config,
     67 			    struct drm_connector_state *conn_state);
     68 bool intel_dp_is_edp(struct intel_dp *intel_dp);
     69 bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
     70 enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port,
     71 				  bool long_hpd);
     72 void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
     73 			    const struct drm_connector_state *conn_state);
     74 void intel_edp_backlight_off(const struct drm_connector_state *conn_state);
     75 void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
     76 void intel_edp_panel_on(struct intel_dp *intel_dp);
     77 void intel_edp_panel_off(struct intel_dp *intel_dp);
     78 void intel_dp_mst_suspend(struct drm_i915_private *dev_priv);
     79 void intel_dp_mst_resume(struct drm_i915_private *dev_priv);
     80 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
     81 int intel_dp_max_lane_count(struct intel_dp *intel_dp);
     82 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
     83 void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
     84 u32 intel_dp_pack_aux(const u8 *src, int src_bytes);
     85 
     86 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
     87 			   const struct intel_crtc_state *crtc_state);
     88 void intel_edp_drrs_disable(struct intel_dp *intel_dp,
     89 			    const struct intel_crtc_state *crtc_state);
     90 void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv,
     91 			       unsigned int frontbuffer_bits);
     92 void intel_edp_drrs_flush(struct drm_i915_private *dev_priv,
     93 			  unsigned int frontbuffer_bits);
     94 
     95 void
     96 intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,
     97 				       u8 dp_train_pat);
     98 void
     99 intel_dp_set_signal_levels(struct intel_dp *intel_dp);
    100 void intel_dp_set_idle_link_train(struct intel_dp *intel_dp);
    101 u8
    102 intel_dp_voltage_max(struct intel_dp *intel_dp);
    103 u8
    104 intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, u8 voltage_swing);
    105 void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock,
    106 			   u8 *link_bw, u8 *rate_select);
    107 bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp);
    108 bool intel_dp_source_supports_hbr3(struct intel_dp *intel_dp);
    109 bool
    110 intel_dp_get_link_status(struct intel_dp *intel_dp, u8 *link_status);
    111 
    112 bool intel_dp_read_dpcd(struct intel_dp *intel_dp);
    113 bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp);
    114 int intel_dp_link_required(int pixel_clock, int bpp);
    115 int intel_dp_max_data_rate(int max_link_clock, int max_lanes);
    116 bool intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state,
    117 			    const struct drm_connector_state *conn_state);
    118 void intel_dp_vsc_enable(struct intel_dp *intel_dp,
    119 			 const struct intel_crtc_state *crtc_state,
    120 			 const struct drm_connector_state *conn_state);
    121 void intel_dp_hdr_metadata_enable(struct intel_dp *intel_dp,
    122 				  const struct intel_crtc_state *crtc_state,
    123 				  const struct drm_connector_state *conn_state);
    124 bool intel_digital_port_connected(struct intel_encoder *encoder);
    125 
    126 static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
    127 {
    128 	return ~((1 << lane_count) - 1) & 0xf;
    129 }
    130 
    131 u32 intel_dp_mode_to_fec_clock(u32 mode_clock);
    132 
    133 #endif /* __INTEL_DP_H__ */
    134