1 /* 2 * Copyright 2022 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 27 #ifndef __DC_LINK_DP_TRAINING_8B_10B_H__ 28 #define __DC_LINK_DP_TRAINING_8B_10B_H__ 29 #include "link_dp_training.h" 30 31 /* to avoid infinite loop where-in the receiver 32 * switches between different VS 33 */ 34 #define LINK_TRAINING_MAX_CR_RETRY 100 35 #define LINK_TRAINING_MAX_RETRY_COUNT 5 36 37 enum link_training_result dp_perform_8b_10b_link_training( 38 struct dc_link *link, 39 const struct link_resource *link_res, 40 struct link_training_settings *lt_settings); 41 42 enum link_training_result perform_8b_10b_clock_recovery_sequence( 43 struct dc_link *link, 44 const struct link_resource *link_res, 45 struct link_training_settings *lt_settings, 46 uint32_t offset); 47 48 enum link_training_result perform_8b_10b_channel_equalization_sequence( 49 struct dc_link *link, 50 const struct link_resource *link_res, 51 struct link_training_settings *lt_settings, 52 uint32_t offset); 53 54 enum lttpr_mode dp_decide_8b_10b_lttpr_mode(struct dc_link *link); 55 56 void decide_8b_10b_training_settings( 57 struct dc_link *link, 58 const struct dc_link_settings *link_setting, 59 struct link_training_settings *lt_settings); 60 61 #endif /* __DC_LINK_DP_TRAINING_8B_10B_H__ */ 62