1 | /* SPDX-License-Identifier: MIT */ |
2 | /* |
3 | * Copyright 2021 Advanced Micro Devices, Inc. |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a |
6 | * copy of this software and associated documentation files (the "Software"), |
7 | * to deal in the Software without restriction, including without limitation |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
9 | * and/or sell copies of the Software, and to permit persons to whom the |
10 | * Software is furnished to do so, subject to the following conditions: |
11 | * |
12 | * The above copyright notice and this permission notice shall be included in |
13 | * all copies or substantial portions of the Software. |
14 | * |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
21 | * OTHER DEALINGS IN THE SOFTWARE. |
22 | * |
23 | * Authors: AMD |
24 | * |
25 | */ |
26 | |
27 | #ifndef __DC_LINK_DPIA_H__ |
28 | #define __DC_LINK_DPIA_H__ |
29 | |
30 | #include "link.h" |
31 | |
32 | /* Read tunneling device capability from DPCD and update link capability |
33 | * accordingly. |
34 | */ |
35 | enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link); |
36 | |
37 | /* Query hot plug status of USB4 DP tunnel. |
38 | * Returns true if HPD high. |
39 | */ |
40 | bool dpia_query_hpd_status(struct dc_link *link); |
41 | #endif /* __DC_LINK_DPIA_H__ */ |
42 | |