link_dp_training_dpia.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
27#ifndef __DC_LINK_DP_TRAINING_DPIA_H__
28#define __DC_LINK_DP_TRAINING_DPIA_H__
29#include "link_dp_training.h"
30
31/* The approximate time (us) it takes to transmit 9 USB4 DP clock sync packets. */
32#define DPIA_CLK_SYNC_DELAY 16000
33
34/* Train DP tunneling link for USB4 DPIA display endpoint.
35 * DPIA equivalent of dc_link_dp_perfrorm_link_training.
36 * Aborts link training upon detection of sink unplug.
37 */
38enum link_training_result dpia_perform_link_training(
39	struct dc_link *link,
40	const struct link_resource *link_res,
41	const struct dc_link_settings *link_setting,
42	bool skip_video_pattern);
43
44void dpia_training_abort(
45		struct dc_link *link,
46		struct link_training_settings *lt_settings,
47		uint32_t hop);
48
49uint32_t dpia_get_eq_aux_rd_interval(
50		const struct dc_link *link,
51		const struct link_training_settings *lt_settings,
52		uint32_t hop);
53
54void dpia_set_tps_notification(
55		struct dc_link *link,
56		const struct link_training_settings *lt_settings,
57		uint8_t pattern,
58		uint32_t offset);
59
60#endif /* __DC_LINK_DP_TRAINING_DPIA_H__ */