578 lines
18 KiB
C
578 lines
18 KiB
C
/*
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* Copyright 2012-14 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef DC_LINK_H_
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#define DC_LINK_H_
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#include "dc.h"
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#include "dc_types.h"
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#include "grph_object_defs.h"
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struct link_resource;
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enum aux_return_code_type;
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enum dc_link_fec_state {
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dc_link_fec_not_ready,
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dc_link_fec_ready,
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dc_link_fec_enabled
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};
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/* DP MST stream allocation (payload bandwidth number) */
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struct link_mst_stream_allocation {
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/* DIG front */
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const struct stream_encoder *stream_enc;
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/* HPO DP Stream Encoder */
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const struct hpo_dp_stream_encoder *hpo_dp_stream_enc;
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/* associate DRM payload table with DC stream encoder */
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uint8_t vcp_id;
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/* number of slots required for the DP stream in transport packet */
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uint8_t slot_count;
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};
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/* DP MST stream allocation table */
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struct link_mst_stream_allocation_table {
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/* number of DP video streams */
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int stream_count;
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/* array of stream allocations */
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struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM];
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};
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struct edp_trace_power_timestamps {
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uint64_t poweroff;
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uint64_t poweron;
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};
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struct dp_trace_lt_counts {
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unsigned int total;
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unsigned int fail;
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};
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struct dp_trace_lt {
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struct dp_trace_lt_counts counts;
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struct dp_trace_timestamps {
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unsigned long long start;
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unsigned long long end;
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} timestamps;
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enum link_training_result result;
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bool is_logged;
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};
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struct dp_trace {
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struct dp_trace_lt detect_lt_trace;
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struct dp_trace_lt commit_lt_trace;
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unsigned int link_loss_count;
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bool is_initialized;
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struct edp_trace_power_timestamps edp_trace_power_timestamps;
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};
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/* PSR feature flags */
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struct psr_settings {
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bool psr_feature_enabled; // PSR is supported by sink
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bool psr_allow_active; // PSR is currently active
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enum dc_psr_version psr_version; // Internal PSR version, determined based on DPCD
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bool psr_vtotal_control_support; // Vtotal control is supported by sink
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unsigned long long psr_dirty_rects_change_timestamp_ns; // for delay of enabling PSR-SU
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/* These parameters are calculated in Driver,
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* based on display timing and Sink capabilities.
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* If VBLANK region is too small and Sink takes a long time
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* to set up RFB, it may take an extra frame to enter PSR state.
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*/
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bool psr_frame_capture_indication_req;
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unsigned int psr_sdp_transmit_line_num_deadline;
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uint8_t force_ffu_mode;
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unsigned int psr_power_opt;
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};
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/* To split out "global" and "per-panel" config settings.
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* Add a struct dc_panel_config under dc_link
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*/
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struct dc_panel_config {
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/* extra panel power sequence parameters */
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struct pps {
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unsigned int extra_t3_ms;
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unsigned int extra_t7_ms;
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unsigned int extra_delay_backlight_off;
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unsigned int extra_post_t7_ms;
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unsigned int extra_pre_t11_ms;
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unsigned int extra_t12_ms;
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unsigned int extra_post_OUI_ms;
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} pps;
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/* PSR */
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struct psr {
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bool disable_psr;
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bool disallow_psrsu;
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bool rc_disable;
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bool rc_allow_static_screen;
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bool rc_allow_fullscreen_VPB;
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} psr;
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/* ABM */
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struct varib {
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unsigned int varibright_feature_enable;
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unsigned int def_varibright_level;
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unsigned int abm_config_setting;
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} varib;
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/* edp DSC */
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struct dsc {
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bool disable_dsc_edp;
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unsigned int force_dsc_edp_policy;
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} dsc;
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/* eDP ILR */
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struct ilr {
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bool optimize_edp_link_rate; /* eDP ILR */
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} ilr;
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};
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/*
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* USB4 DPIA BW ALLOCATION STRUCTS
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*/
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struct dc_dpia_bw_alloc {
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int sink_verified_bw; // The Verified BW that sink can allocated and use that has been verified already
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int sink_allocated_bw; // The Actual Allocated BW that sink currently allocated
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int sink_max_bw; // The Max BW that sink can require/support
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int estimated_bw; // The estimated available BW for this DPIA
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int bw_granularity; // BW Granularity
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bool bw_alloc_enabled; // The BW Alloc Mode Support is turned ON for all 3: DP-Tx & Dpia & CM
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bool response_ready; // Response ready from the CM side
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};
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#define MAX_SINKS_PER_LINK 4
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/*
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* A link contains one or more sinks and their connected status.
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* The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
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*/
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struct dc_link {
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struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
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unsigned int sink_count;
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struct dc_sink *local_sink;
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unsigned int link_index;
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enum dc_connection_type type;
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enum signal_type connector_signal;
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enum dc_irq_source irq_source_hpd;
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enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse */
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bool is_hpd_filter_disabled;
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bool dp_ss_off;
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/**
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* @link_state_valid:
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*
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* If there is no link and local sink, this variable should be set to
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* false. Otherwise, it should be set to true; usually, the function
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* core_link_enable_stream sets this field to true.
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*/
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bool link_state_valid;
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bool aux_access_disabled;
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bool sync_lt_in_progress;
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bool is_internal_display;
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/* TODO: Rename. Flag an endpoint as having a programmable mapping to a
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* DIG encoder. */
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bool is_dig_mapping_flexible;
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bool hpd_status; /* HPD status of link without physical HPD pin. */
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bool is_hpd_pending; /* Indicates a new received hpd */
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bool is_automated; /* Indicates automated testing */
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bool edp_sink_present;
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struct dp_trace dp_trace;
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/* caps is the same as reported_link_cap. link_traing use
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* reported_link_cap. Will clean up. TODO
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*/
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struct dc_link_settings reported_link_cap;
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struct dc_link_settings verified_link_cap;
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struct dc_link_settings cur_link_settings;
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struct dc_lane_settings cur_lane_setting[LANE_COUNT_DP_MAX];
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struct dc_link_settings preferred_link_setting;
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/* preferred_training_settings are override values that
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* come from DM. DM is responsible for the memory
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* management of the override pointers.
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*/
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struct dc_link_training_overrides preferred_training_settings;
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struct dp_audio_test_data audio_test_data;
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uint8_t ddc_hw_inst;
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uint8_t hpd_src;
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uint8_t link_enc_hw_inst;
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/* DIG link encoder ID. Used as index in link encoder resource pool.
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* For links with fixed mapping to DIG, this is not changed after dc_link
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* object creation.
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*/
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enum engine_id eng_id;
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bool test_pattern_enabled;
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union compliance_test_state compliance_test_state;
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void *priv;
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struct ddc_service *ddc;
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bool aux_mode;
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/* Private to DC core */
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const struct dc *dc;
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struct dc_context *ctx;
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struct panel_cntl *panel_cntl;
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struct link_encoder *link_enc;
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struct graphics_object_id link_id;
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/* Endpoint type distinguishes display endpoints which do not have entries
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* in the BIOS connector table from those that do. Helps when tracking link
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* encoder to display endpoint assignments.
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*/
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enum display_endpoint_type ep_type;
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union ddi_channel_mapping ddi_channel_mapping;
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struct connector_device_tag_info device_tag;
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struct dpcd_caps dpcd_caps;
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uint32_t dongle_max_pix_clk;
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unsigned short chip_caps;
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unsigned int dpcd_sink_count;
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#if defined(CONFIG_DRM_AMD_DC_HDCP)
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struct hdcp_caps hdcp_caps;
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#endif
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enum edp_revision edp_revision;
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union dpcd_sink_ext_caps dpcd_sink_ext_caps;
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struct psr_settings psr_settings;
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/* Drive settings read from integrated info table */
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struct dc_lane_settings bios_forced_drive_settings;
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/* Vendor specific LTTPR workaround variables */
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uint8_t vendor_specific_lttpr_link_rate_wa;
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bool apply_vendor_specific_lttpr_link_rate_wa;
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/* MST record stream using this link */
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struct link_flags {
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bool dp_keep_receiver_powered;
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bool dp_skip_DID2;
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bool dp_skip_reset_segment;
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bool dp_skip_fs_144hz;
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bool dp_mot_reset_segment;
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/* Some USB4 docks do not handle turning off MST DSC once it has been enabled. */
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bool dpia_mst_dsc_always_on;
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/* Forced DPIA into TBT3 compatibility mode. */
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bool dpia_forced_tbt3_mode;
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bool dongle_mode_timing_override;
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} wa_flags;
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struct link_mst_stream_allocation_table mst_stream_alloc_table;
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struct dc_link_status link_status;
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struct dprx_states dprx_states;
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struct gpio *hpd_gpio;
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enum dc_link_fec_state fec_state;
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bool link_powered_externally; // Used to bypass hardware sequencing delays when panel is powered down forcibly
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struct dc_panel_config panel_config;
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struct phy_state phy_state;
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};
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/**
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* dc_get_link_at_index() - Return an enumerated dc_link.
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*
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* dc_link order is constant and determined at
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* boot time. They cannot be created or destroyed.
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* Use dc_get_caps() to get number of links.
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*/
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static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index)
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{
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return dc->links[link_index];
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}
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static inline void get_edp_links(const struct dc *dc,
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struct dc_link **edp_links,
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int *edp_num)
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{
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int i;
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*edp_num = 0;
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for (i = 0; i < dc->link_count; i++) {
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// report any eDP links, even unconnected DDI's
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if (!dc->links[i])
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continue;
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if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP) {
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edp_links[*edp_num] = dc->links[i];
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if (++(*edp_num) == MAX_NUM_EDP)
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return;
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}
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}
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}
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static inline bool dc_get_edp_link_panel_inst(const struct dc *dc,
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const struct dc_link *link,
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unsigned int *inst_out)
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{
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struct dc_link *edp_links[MAX_NUM_EDP];
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int edp_num, i;
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*inst_out = 0;
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if (link->connector_signal != SIGNAL_TYPE_EDP)
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return false;
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get_edp_links(dc, edp_links, &edp_num);
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for (i = 0; i < edp_num; i++) {
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if (link == edp_links[i])
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break;
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(*inst_out)++;
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}
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return true;
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}
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/* Set backlight level of an embedded panel (eDP, LVDS).
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* backlight_pwm_u16_16 is unsigned 32 bit with 16 bit integer
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* and 16 bit fractional, where 1.0 is max backlight value.
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*/
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bool dc_link_set_backlight_level(const struct dc_link *dc_link,
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uint32_t backlight_pwm_u16_16,
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uint32_t frame_ramp);
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/* Set/get nits-based backlight level of an embedded panel (eDP, LVDS). */
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bool dc_link_set_backlight_level_nits(struct dc_link *link,
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bool isHDR,
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uint32_t backlight_millinits,
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uint32_t transition_time_in_ms);
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bool dc_link_get_backlight_level_nits(struct dc_link *link,
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uint32_t *backlight_millinits,
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uint32_t *backlight_millinits_peak);
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int dc_link_get_backlight_level(const struct dc_link *dc_link);
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int dc_link_get_target_backlight_pwm(const struct dc_link *link);
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bool dc_link_set_psr_allow_active(struct dc_link *dc_link, const bool *enable,
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bool wait, bool force_static, const unsigned int *power_opts);
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bool dc_link_get_psr_state(const struct dc_link *dc_link, enum dc_psr_state *state);
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bool dc_link_setup_psr(struct dc_link *dc_link,
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const struct dc_stream_state *stream, struct psr_config *psr_config,
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struct psr_context *psr_context);
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bool dc_link_get_hpd_state(struct dc_link *dc_link);
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/* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
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* Return:
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* true - Downstream port status changed. DM should call DC to do the
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* detection.
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* false - no change in Downstream port status. No further action required
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* from DM. */
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bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
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union hpd_irq_data *hpd_irq_dpcd_data, bool *out_link_loss,
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bool defer_handling, bool *has_left_work);
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/*
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* On eDP links this function call will stall until T12 has elapsed.
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* If the panel is not in power off state, this function will return
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* immediately.
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*/
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bool dc_link_wait_for_t12(struct dc_link *link);
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void dc_link_dp_handle_automated_test(struct dc_link *link);
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void dc_link_dp_handle_link_loss(struct dc_link *link);
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bool dc_link_dp_allow_hpd_rx_irq(const struct dc_link *link);
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bool dc_link_check_link_loss_status(struct dc_link *link,
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union hpd_irq_data *hpd_irq_dpcd_data);
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enum dc_status dc_link_dp_read_hpd_rx_irq_data(
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struct dc_link *link,
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union hpd_irq_data *irq_data);
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struct dc_sink_init_data;
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struct dc_sink *dc_link_add_remote_sink(
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struct dc_link *dc_link,
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const uint8_t *edid,
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int len,
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struct dc_sink_init_data *init_data);
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void dc_link_remove_remote_sink(
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struct dc_link *link,
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struct dc_sink *sink);
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/* Used by diagnostics for virtual link at the moment */
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bool dc_link_dp_set_test_pattern(
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struct dc_link *link,
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enum dp_test_pattern test_pattern,
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enum dp_test_pattern_color_space test_pattern_color_space,
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const struct link_training_settings *p_link_settings,
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const unsigned char *p_custom_pattern,
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unsigned int cust_pattern_size);
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bool dc_link_dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap);
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/**
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*****************************************************************************
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* Function: dc_link_enable_hpd_filter
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*
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* @brief
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* If enable is true, programs HPD filter on associated HPD line to default
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* values dependent on link->connector_signal
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*
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* If enable is false, programs HPD filter on associated HPD line with no
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* delays on connect or disconnect
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*
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* @param [in] link: pointer to the dc link
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* @param [in] enable: boolean specifying whether to enable hbd
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*****************************************************************************
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*/
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void dc_link_enable_hpd_filter(struct dc_link *link, bool enable);
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bool dc_link_is_dp_sink_present(struct dc_link *link);
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/*
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* DPCD access interfaces
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*/
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void dc_link_set_drive_settings(struct dc *dc,
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struct link_training_settings *lt_settings,
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const struct dc_link *link);
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void dc_link_set_preferred_link_settings(struct dc *dc,
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struct dc_link_settings *link_setting,
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struct dc_link *link);
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void dc_link_set_preferred_training_settings(struct dc *dc,
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struct dc_link_settings *link_setting,
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struct dc_link_training_overrides *lt_overrides,
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struct dc_link *link,
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bool skip_immediate_retrain);
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void dc_link_enable_hpd(const struct dc_link *link);
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void dc_link_disable_hpd(const struct dc_link *link);
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void dc_link_set_test_pattern(struct dc_link *link,
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enum dp_test_pattern test_pattern,
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enum dp_test_pattern_color_space test_pattern_color_space,
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const struct link_training_settings *p_link_settings,
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const unsigned char *p_custom_pattern,
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unsigned int cust_pattern_size);
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const struct dc_link_settings *dc_link_get_link_cap(
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const struct dc_link *link);
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void dc_link_overwrite_extended_receiver_cap(
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struct dc_link *link);
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bool dc_is_oem_i2c_device_present(
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struct dc *dc,
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size_t slave_address
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);
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bool dc_submit_i2c(
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struct dc *dc,
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uint32_t link_index,
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struct i2c_command *cmd);
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bool dc_submit_i2c_oem(
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struct dc *dc,
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struct i2c_command *cmd);
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bool dc_link_is_fec_supported(const struct dc_link *link);
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bool dc_link_should_enable_fec(const struct dc_link *link);
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uint32_t dc_link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw);
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enum dp_link_encoding dc_link_dp_mst_decide_link_encoding_format(const struct dc_link *link);
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/* take a snapshot of current link resource allocation state */
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void dc_get_cur_link_res_map(const struct dc *dc, uint32_t *map);
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/* restore link resource allocation state from a snapshot */
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void dc_restore_link_res_map(const struct dc *dc, uint32_t *map);
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void dp_trace_reset(struct dc_link *link);
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bool dc_dp_trace_is_initialized(struct dc_link *link);
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unsigned long long dc_dp_trace_get_lt_end_timestamp(struct dc_link *link,
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bool in_detection);
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void dc_dp_trace_set_is_logged_flag(struct dc_link *link,
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bool in_detection,
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bool is_logged);
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bool dc_dp_trace_is_logged(struct dc_link *link,
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bool in_detection);
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struct dp_trace_lt_counts *dc_dp_trace_get_lt_counts(struct dc_link *link,
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bool in_detection);
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unsigned int dc_dp_trace_get_link_loss_count(struct dc_link *link);
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/* Attempt to transfer the given aux payload. This function does not perform
|
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* retries or handle error states. The reply is returned in the payload->reply
|
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* and the result through operation_result. Returns the number of bytes
|
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* transferred,or -1 on a failure.
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*/
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int dc_link_aux_transfer_raw(struct ddc_service *ddc,
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struct aux_payload *payload,
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enum aux_return_code_type *operation_result);
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enum lttpr_mode dc_link_decide_lttpr_mode(struct dc_link *link,
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struct dc_link_settings *link_setting);
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void dc_link_dp_receiver_power_ctrl(struct dc_link *link, bool on);
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bool dc_link_decide_edp_link_settings(struct dc_link *link,
|
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struct dc_link_settings *link_setting,
|
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uint32_t req_bw);
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void dc_link_edp_panel_backlight_power_on(struct dc_link *link,
|
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bool wait_for_hpd);
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|
|
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/*
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* USB4 DPIA BW ALLOCATION PUBLIC FUNCTIONS
|
|
*/
|
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/*
|
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* Send a request from DP-Tx requesting to allocate BW remotely after
|
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* allocating it locally. This will get processed by CM and a CB function
|
|
* will be called.
|
|
*
|
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* @link: pointer to the dc_link struct instance
|
|
* @req_bw: The requested bw in Kbyte to allocated
|
|
*
|
|
* return: none
|
|
*/
|
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void dc_link_set_usb4_req_bw_req(struct dc_link *link, int req_bw);
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|
|
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/*
|
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* CB function for when the status of the Req above is complete. We will
|
|
* find out the result of allocating on CM and update structs accordingly
|
|
*
|
|
* @link: pointer to the dc_link struct instance
|
|
* @bw: Allocated or Estimated BW depending on the result
|
|
* @result: Response type
|
|
*
|
|
* return: none
|
|
*/
|
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void dc_link_get_usb4_req_bw_resp(struct dc_link *link, uint8_t bw, uint8_t result);
|
|
|
|
/*
|
|
* Handle the USB4 BW Allocation related functionality here:
|
|
* Plug => Try to allocate max bw from timing parameters supported by the sink
|
|
* Unplug => de-allocate bw
|
|
*
|
|
* @link: pointer to the dc_link struct instance
|
|
* @peak_bw: Peak bw used by the link/sink
|
|
*
|
|
* return: allocated bw else return 0
|
|
*/
|
|
int dc_link_dp_dpia_handle_usb4_bandwidth_allocation_for_link(struct dc_link *link, int peak_bw);
|
|
|
|
/* TODO: this is not meant to be exposed to DM. Should switch to stream update
|
|
* interface i.e stream_update->dsc_config
|
|
*/
|
|
bool dc_link_update_dsc_config(struct pipe_ctx *pipe_ctx);
|
|
#endif /* DC_LINK_H_ */
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