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  * poll pending down reply
62  */
63 void dm_helpers_dp_mst_poll_pending_down_reply(
64 	struct dc_context *ctx,
65 	const struct dc_link *link);
66 
67 /*
68  * Clear payload allocation table before enable MST DP link.
69  */
70 void dm_helpers_dp_mst_clear_payload_allocation_table(
71 	struct dc_context *ctx,
72 	const struct dc_link *link);
73 
74 /*
75  * Polls for ACT (allocation change trigger) handled and
76  */
77 bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
78 		struct dc_context *ctx,
79 		const struct dc_stream_state *stream);
80 /*
81  * Sends ALLOCATE_PAYLOAD message.
82  */
83 bool dm_helpers_dp_mst_send_payload_allocation(
84 		struct dc_context *ctx,
85 		const struct dc_stream_state *stream,
86 		bool enable);
87 
88 bool dm_helpers_dp_mst_start_top_mgr(
89 		struct dc_context *ctx,
90 		const struct dc_link *link,
91 		bool boot);
92 
93 void dm_helpers_dp_mst_stop_top_mgr(
94 		struct dc_context *ctx,
95 		const struct dc_link *link);
96 /**
97  * OS specific aux read callback.
98  */
99 bool dm_helpers_dp_read_dpcd(
100 		struct dc_context *ctx,
101 		const struct dc_link *link,
102 		uint32_t address,
103 		uint8_t *data,
104 		uint32_t size);
105 
106 /**
107  * OS specific aux write callback.
108  */
109 bool dm_helpers_dp_write_dpcd(
110 		struct dc_context *ctx,
111 		const struct dc_link *link,
112 		uint32_t address,
113 		const uint8_t *data,
114 		uint32_t size);
115 
116 bool dm_helpers_submit_i2c(
117 		struct dc_context *ctx,
118 		const struct dc_link *link,
119 		struct i2c_command *cmd);
120 
121 #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
122 bool dm_helpers_dp_write_dsc_enable(
123 		struct dc_context *ctx,
124 		const struct dc_stream_state *stream,
125 		bool enable
126 );
127 #endif
128 bool dm_helpers_is_dp_sink_present(
129 		struct dc_link *link);
130 
131 enum dc_edid_status dm_helpers_read_local_edid(
132 		struct dc_context *ctx,
133 		struct dc_link *link,
134 		struct dc_sink *sink);
135 
136 void dm_set_dcn_clocks(
137 		struct dc_context *ctx,
138 		struct dc_clocks *clks);
139 
140 #endif /* __DM_HELPERS__ */
141