1 /*
2  * Copyright 2012-15 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  * This file defines helper functions provided by the Display Manager to
28  * Display Core.
29  */
30 #ifndef __DM_HELPERS__
31 #define __DM_HELPERS__
32 
33 #include "dc_types.h"
34 #include "dc.h"
35 
36 struct dp_mst_stream_allocation_table;
37 
38 enum dc_edid_status dm_helpers_parse_edid_caps(
39 	struct dc_context *ctx,
40 	const struct dc_edid *edid,
41 	struct dc_edid_caps *edid_caps);
42 
43 
44 /*
45  * Update DP branch info
46  */
47 void dm_helpers_dp_update_branch_info(
48 		struct dc_context *ctx,
49 		const struct dc_link *link);
50 
51 /*
52  * Writes payload allocation table in immediate downstream device.
53  */
54 bool dm_helpers_dp_mst_write_payload_allocation_table(
55 		struct dc_context *ctx,
56 		const struct dc_stream_state *stream,
57 		struct dp_mst_stream_allocation_table *proposed_table,
58 		bool enable);
59 
60 /*
61  * Clear payload allocation table before enable MST DP link.
62  */
63 void dm_helpers_dp_mst_clear_payload_allocation_table(
64 	struct dc_context *ctx,
65 	const struct dc_link *link);
66 
67 /*
68  * Polls for ACT (allocation change trigger) handled and
69  */
70 bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
71 		struct dc_context *ctx,
72 		const struct dc_stream_state *stream);
73 /*
74  * Sends ALLOCATE_PAYLOAD message.
75  */
76 bool dm_helpers_dp_mst_send_payload_allocation(
77 		struct dc_context *ctx,
78 		const struct dc_stream_state *stream,
79 		bool enable);
80 
81 bool dm_helpers_dp_mst_start_top_mgr(
82 		struct dc_context *ctx,
83 		const struct dc_link *link,
84 		bool boot);
85 
86 void dm_helpers_dp_mst_stop_top_mgr(
87 		struct dc_context *ctx,
88 		const struct dc_link *link);
89 /**
90  * OS specific aux read callback.
91  */
92 bool dm_helpers_dp_read_dpcd(
93 		struct dc_context *ctx,
94 		const struct dc_link *link,
95 		uint32_t address,
96 		uint8_t *data,
97 		uint32_t size);
98 
99 /**
100  * OS specific aux write callback.
101  */
102 bool dm_helpers_dp_write_dpcd(
103 		struct dc_context *ctx,
104 		const struct dc_link *link,
105 		uint32_t address,
106 		const uint8_t *data,
107 		uint32_t size);
108 
109 bool dm_helpers_submit_i2c(
110 		struct dc_context *ctx,
111 		const struct dc_link *link,
112 		struct i2c_command *cmd);
113 
114 bool dm_helpers_is_dp_sink_present(
115 		struct dc_link *link);
116 
117 enum dc_edid_status dm_helpers_read_local_edid(
118 		struct dc_context *ctx,
119 		struct dc_link *link,
120 		struct dc_sink *sink);
121 
122 void dm_set_dcn_clocks(
123 		struct dc_context *ctx,
124 		struct dc_clocks *clks);
125 
126 #endif /* __DM_HELPERS__ */
127