xref: /linux/drivers/gpu/drm/amd/display/dc/link/link_detection.h (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 /*
2  * Copyright 2023 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_DETECTION_H__
27 #define __DC_LINK_DETECTION_H__
28 #include "link.h"
29 bool link_detect(struct dc_link *link, enum dc_detect_reason reason);
30 bool link_detect_connection_type(struct dc_link *link,
31 		enum dc_connection_type *type);
32 struct dc_sink *link_add_remote_sink(
33 		struct dc_link *link,
34 		const uint8_t *edid,
35 		int len,
36 		struct dc_sink_init_data *init_data);
37 void link_remove_remote_sink(struct dc_link *link, struct dc_sink *sink);
38 bool link_reset_cur_dp_mst_topology(struct dc_link *link);
39 const struct dc_link_status *link_get_status(const struct dc_link *link);
40 bool link_is_hdcp14(struct dc_link *link, enum signal_type signal);
41 bool link_is_hdcp22(struct dc_link *link, enum signal_type signal);
42 void link_clear_dprx_states(struct dc_link *link);
43 #endif /* __DC_LINK_DETECTION_H__ */
44