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 #ifdef CONFIG_DRM_AMD_DC_DCN3_0
39 /*
40  * Allocate memory accessible by the GPU
41  *
42  * frame buffer allocations must be aligned to a 4096-byte boundary
43  *
44  * Returns virtual address, sets addr to physical address
45  */
46 void *dm_helpers_allocate_gpu_mem(
47 		struct dc_context *ctx,
48 		enum dc_gpu_mem_alloc_type type,
49 		size_t size,
50 		long long *addr);
51 
52 /*
53  * Free the GPU-accessible memory at the virtual address pvMem
54  */
55 void dm_helpers_free_gpu_mem(
56 		struct dc_context *ctx,
57 		enum dc_gpu_mem_alloc_type type,
58 		void *pvMem);
59 
60 #endif
61 enum dc_edid_status dm_helpers_parse_edid_caps(
62 	struct dc_context *ctx,
63 	const struct dc_edid *edid,
64 	struct dc_edid_caps *edid_caps);
65 
66 
67 /*
68  * Update DP branch info
69  */
70 void dm_helpers_dp_update_branch_info(
71 		struct dc_context *ctx,
72 		const struct dc_link *link);
73 
74 /*
75  * Writes payload allocation table in immediate downstream device.
76  */
77 bool dm_helpers_dp_mst_write_payload_allocation_table(
78 		struct dc_context *ctx,
79 		const struct dc_stream_state *stream,
80 		struct dp_mst_stream_allocation_table *proposed_table,
81 		bool enable);
82 
83 /*
84  * poll pending down reply
85  */
86 void dm_helpers_dp_mst_poll_pending_down_reply(
87 	struct dc_context *ctx,
88 	const struct dc_link *link);
89 
90 /*
91  * Clear payload allocation table before enable MST DP link.
92  */
93 void dm_helpers_dp_mst_clear_payload_allocation_table(
94 	struct dc_context *ctx,
95 	const struct dc_link *link);
96 
97 /*
98  * Polls for ACT (allocation change trigger) handled and
99  */
100 enum act_return_status dm_helpers_dp_mst_poll_for_allocation_change_trigger(
101 		struct dc_context *ctx,
102 		const struct dc_stream_state *stream);
103 /*
104  * Sends ALLOCATE_PAYLOAD message.
105  */
106 bool dm_helpers_dp_mst_send_payload_allocation(
107 		struct dc_context *ctx,
108 		const struct dc_stream_state *stream,
109 		bool enable);
110 
111 bool dm_helpers_dp_mst_start_top_mgr(
112 		struct dc_context *ctx,
113 		const struct dc_link *link,
114 		bool boot);
115 
116 void dm_helpers_dp_mst_stop_top_mgr(
117 		struct dc_context *ctx,
118 		const struct dc_link *link);
119 /**
120  * OS specific aux read callback.
121  */
122 bool dm_helpers_dp_read_dpcd(
123 		struct dc_context *ctx,
124 		const struct dc_link *link,
125 		uint32_t address,
126 		uint8_t *data,
127 		uint32_t size);
128 
129 /**
130  * OS specific aux write callback.
131  */
132 bool dm_helpers_dp_write_dpcd(
133 		struct dc_context *ctx,
134 		const struct dc_link *link,
135 		uint32_t address,
136 		const uint8_t *data,
137 		uint32_t size);
138 
139 bool dm_helpers_submit_i2c(
140 		struct dc_context *ctx,
141 		const struct dc_link *link,
142 		struct i2c_command *cmd);
143 
144 bool dm_helpers_dp_write_dsc_enable(
145 		struct dc_context *ctx,
146 		const struct dc_stream_state *stream,
147 		bool enable
148 );
149 bool dm_helpers_is_dp_sink_present(
150 		struct dc_link *link);
151 
152 enum dc_edid_status dm_helpers_read_local_edid(
153 		struct dc_context *ctx,
154 		struct dc_link *link,
155 		struct dc_sink *sink);
156 
157 void dm_set_dcn_clocks(
158 		struct dc_context *ctx,
159 		struct dc_clocks *clks);
160 
161 #endif /* __DM_HELPERS__ */
162