1 /*
2  * Copyright 2015 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_HWSS_H__
27 #define __DC_LINK_HWSS_H__
28 
29 #include "inc/core_status.h"
30 
31 enum dc_status core_link_read_dpcd(
32 	struct dc_link *link,
33 	uint32_t address,
34 	uint8_t *data,
35 	uint32_t size);
36 
37 enum dc_status core_link_write_dpcd(
38 	struct dc_link *link,
39 	uint32_t address,
40 	const uint8_t *data,
41 	uint32_t size);
42 
43 struct gpio *get_hpd_gpio(struct dc_bios *dcb,
44 		struct graphics_object_id link_id,
45 		struct gpio_service *gpio_service);
46 
47 void dp_enable_link_phy(
48 	struct dc_link *link,
49 	enum signal_type signal,
50 	enum clock_source_id clock_source,
51 	const struct dc_link_settings *link_settings);
52 
53 void dp_receiver_power_ctrl(struct dc_link *link, bool on);
54 void edp_add_delay_for_T9(struct dc_link *link);
55 bool edp_receiver_ready_T9(struct dc_link *link);
56 bool edp_receiver_ready_T7(struct dc_link *link);
57 
58 void dp_disable_link_phy(struct dc_link *link, enum signal_type signal);
59 
60 void dp_disable_link_phy_mst(struct dc_link *link, enum signal_type signal);
61 
62 bool dp_set_hw_training_pattern(
63 	struct dc_link *link,
64 	enum dc_dp_training_pattern pattern,
65 	uint32_t offset);
66 
67 void dp_set_hw_lane_settings(
68 	struct dc_link *link,
69 	const struct link_training_settings *link_settings,
70 	uint32_t offset);
71 
72 void dp_set_hw_test_pattern(
73 	struct dc_link *link,
74 	enum dp_test_pattern test_pattern,
75 	uint8_t *custom_pattern,
76 	uint32_t custom_pattern_size);
77 
78 void dp_retrain_link_dp_test(struct dc_link *link,
79 		struct dc_link_settings *link_setting,
80 		bool skip_video_pattern);
81 
82 #endif /* __DC_LINK_HWSS_H__ */
83