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 #ifndef __DAL_DDC_SERVICE_H__
27 #define __DAL_DDC_SERVICE_H__
28 
29 #include "include/ddc_service_types.h"
30 #include "include/i2caux_interface.h"
31 
32 #define EDID_SEGMENT_SIZE 256
33 
34 /* Address range from 0x00 to 0x1F.*/
35 #define DP_ADAPTOR_TYPE2_SIZE 0x20
36 #define DP_ADAPTOR_TYPE2_REG_ID 0x10
37 #define DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK 0x1D
38 /* Identifies adaptor as Dual-mode adaptor */
39 #define DP_ADAPTOR_TYPE2_ID 0xA0
40 /* MHz*/
41 #define DP_ADAPTOR_TYPE2_MAX_TMDS_CLK 600
42 /* MHz*/
43 #define DP_ADAPTOR_TYPE2_MIN_TMDS_CLK 25
44 /* kHZ*/
45 #define DP_ADAPTOR_DVI_MAX_TMDS_CLK 165000
46 /* kHZ*/
47 #define DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK 165000
48 
49 #define DDC_I2C_COMMAND_ENGINE I2C_COMMAND_ENGINE_SW
50 
51 struct ddc_service;
52 struct graphics_object_id;
53 enum ddc_result;
54 struct av_sync_data;
55 struct dp_receiver_id_info;
56 
57 struct i2c_payloads;
58 struct aux_payloads;
59 enum aux_return_code_type;
60 
61 void dal_ddc_i2c_payloads_add(
62 		struct i2c_payloads *payloads,
63 		uint32_t address,
64 		uint32_t len,
65 		uint8_t *data,
66 		bool write);
67 
68 struct ddc_service_init_data {
69 	struct graphics_object_id id;
70 	struct dc_context *ctx;
71 	struct dc_link *link;
72 	bool is_dpia_link;
73 };
74 
75 struct ddc_service *dal_ddc_service_create(
76 		struct ddc_service_init_data *ddc_init_data);
77 
78 void dal_ddc_service_destroy(struct ddc_service **ddc);
79 
80 enum ddc_service_type dal_ddc_service_get_type(struct ddc_service *ddc);
81 
82 void dal_ddc_service_set_transaction_type(
83 		struct ddc_service *ddc,
84 		enum ddc_transaction_type type);
85 
86 bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc);
87 
88 void dal_ddc_service_i2c_query_dp_dual_mode_adaptor(
89 		struct ddc_service *ddc,
90 		struct display_sink_capability *sink_cap);
91 
92 bool dal_ddc_service_query_ddc_data(
93 		struct ddc_service *ddc,
94 		uint32_t address,
95 		uint8_t *write_buf,
96 		uint32_t write_size,
97 		uint8_t *read_buf,
98 		uint32_t read_size);
99 
100 bool dal_ddc_submit_aux_command(struct ddc_service *ddc,
101 		struct aux_payload *payload);
102 
103 int dc_link_aux_transfer_raw(struct ddc_service *ddc,
104 		struct aux_payload *payload,
105 		enum aux_return_code_type *operation_result);
106 
107 bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc,
108 		struct aux_payload *payload);
109 
110 bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc,
111 		uint32_t timeout);
112 
113 void dal_ddc_service_write_scdc_data(
114 		struct ddc_service *ddc_service,
115 		uint32_t pix_clk,
116 		bool lte_340_scramble);
117 
118 void dal_ddc_service_read_scdc_data(
119 		struct ddc_service *ddc_service);
120 
121 void ddc_service_set_dongle_type(struct ddc_service *ddc,
122 		enum display_dongle_type dongle_type);
123 
124 void dal_ddc_service_set_ddc_pin(
125 		struct ddc_service *ddc_service,
126 		struct ddc *ddc);
127 
128 struct ddc *dal_ddc_service_get_ddc_pin(struct ddc_service *ddc_service);
129 
130 uint32_t get_defer_delay(struct ddc_service *ddc);
131 
132 #endif /* __DAL_DDC_SERVICE_H__ */
133 
134