| /* |
| * Copyright 2022 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: AMD |
| * |
| */ |
| |
| /* FILE POLICY AND INTENDED USAGE: |
| * |
| */ |
| #include "link_dp_training_auxless.h" |
| #include "link_dp_phy.h" |
| #define DC_LOGGER \ |
| link->ctx->logger |
| bool dp_perform_link_training_skip_aux( |
| struct dc_link *link, |
| const struct link_resource *link_res, |
| const struct dc_link_settings *link_setting) |
| { |
| struct link_training_settings lt_settings = {0}; |
| |
| dp_decide_training_settings( |
| link, |
| link_setting, |
| <_settings); |
| override_training_settings( |
| link, |
| &link->preferred_training_settings, |
| <_settings); |
| |
| /* 1. Perform_clock_recovery_sequence. */ |
| |
| /* transmit training pattern for clock recovery */ |
| dp_set_hw_training_pattern(link, link_res, lt_settings.pattern_for_cr, DPRX); |
| |
| /* call HWSS to set lane settings*/ |
| dp_set_hw_lane_settings(link, link_res, <_settings, DPRX); |
| |
| /* wait receiver to lock-on*/ |
| dp_wait_for_training_aux_rd_interval(link, lt_settings.cr_pattern_time); |
| |
| /* 2. Perform_channel_equalization_sequence. */ |
| |
| /* transmit training pattern for channel equalization. */ |
| dp_set_hw_training_pattern(link, link_res, lt_settings.pattern_for_eq, DPRX); |
| |
| /* call HWSS to set lane settings*/ |
| dp_set_hw_lane_settings(link, link_res, <_settings, DPRX); |
| |
| /* wait receiver to lock-on. */ |
| dp_wait_for_training_aux_rd_interval(link, lt_settings.eq_pattern_time); |
| |
| /* 3. Perform_link_training_int. */ |
| |
| /* Mainlink output idle pattern. */ |
| dp_set_hw_test_pattern(link, link_res, DP_TEST_PATTERN_VIDEO_MODE, NULL, 0); |
| |
| dp_log_training_result(link, <_settings, LINK_TRAINING_SUCCESS); |
| |
| return true; |
| } |