link_dp_capability.h

  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#ifndef __DC_LINK_DP_CAPABILITY_H__
 27#define __DC_LINK_DP_CAPABILITY_H__
 28
 29#include "link_service.h"
 30
 31bool detect_dp_sink_caps(struct dc_link *link);
 32
 33void detect_edp_sink_caps(struct dc_link *link);
 34
 35struct dc_link_settings dp_get_max_link_cap(struct dc_link *link);
 36
 37bool dp_get_max_link_enc_cap(const struct dc_link *link,
 38		struct dc_link_settings *max_link_enc_cap);
 39
 40const struct dc_link_settings *dp_get_verified_link_cap(
 41		const struct dc_link *link);
 42
 43enum dp_link_encoding link_dp_get_encoding_format(
 44		const struct dc_link_settings *link_settings);
 45
 46enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link);
 47
 48/* Convert PHY repeater count read from DPCD uint8_t. */
 49uint8_t dp_parse_lttpr_repeater_count(uint8_t lttpr_repeater_count);
 50
 51/* Calculate embedded LTTPR address offset for vendor-specific behaviour */
 52uint32_t dp_get_closest_lttpr_offset(uint8_t lttpr_count);
 53
 54bool dp_is_sink_present(struct dc_link *link);
 55
 56bool dp_is_lttpr_present(struct dc_link *link);
 57
 58bool dp_is_fec_supported(const struct dc_link *link);
 59
 60bool is_dp_active_dongle(const struct dc_link *link);
 61
 62bool is_dp_branch_device(const struct dc_link *link);
 63
 64void dpcd_write_cable_id_to_dprx(struct dc_link *link);
 65
 66bool dp_should_enable_fec(const struct dc_link *link);
 67
 68bool dp_is_128b_132b_signal(struct pipe_ctx *pipe_ctx);
 69
 70/* Initialize output parameter lt_settings. */
 71void dp_decide_training_settings(
 72	struct dc_link *link,
 73	const struct link_resource *link_res,
 74	const struct dc_link_settings *link_setting,
 75	struct link_training_settings *lt_settings);
 76
 77bool link_decide_link_settings(
 78	struct dc_stream_state *stream,
 79	struct dc_link_settings *link_setting);
 80
 81bool edp_decide_link_settings(struct dc_link *link,
 82		struct dc_link_settings *link_setting, uint32_t req_bw);
 83
 84bool decide_edp_link_settings_with_dsc(struct dc_link *link,
 85		struct dc_link_settings *link_setting,
 86		uint32_t req_bw,
 87		enum dc_link_rate max_link_rate);
 88
 89enum dp_link_encoding mst_decide_link_encoding_format(const struct dc_link *link);
 90
 91void dpcd_set_source_specific_data(struct dc_link *link);
 92
 93/*query dpcd for version and mst cap addresses*/
 94bool read_is_mst_supported(struct dc_link *link);
 95
 96bool decide_fallback_link_setting(
 97		struct dc_link *link,
 98		struct dc_link_settings *max,
 99		struct dc_link_settings *cur,
100		enum link_training_result training_result);
101
102bool dp_verify_link_cap_with_retries(
103	struct dc_link *link,
104	struct dc_link_settings *known_limit_link_setting,
105	int attempts);
106
107uint32_t link_bw_kbps_from_raw_frl_link_rate_data(uint8_t bw);
108
109bool dp_overwrite_extended_receiver_cap(struct dc_link *link);
110
111uint8_t dp_get_lttpr_count(struct dc_link *link);
112
113void edp_get_alpm_support(struct dc_link *link,
114	bool *auxless_support,
115	bool *auxwake_support);
116
117#endif /* __DC_LINK_DP_CAPABILITY_H__ */