1 /* $NetBSD: dc_link_ddc.h,v 1.2 2021/12/18 23:45:05 riastradh Exp $ */ 2 3 /* 4 * Copyright 2012-15 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: AMD 25 * 26 */ 27 28 #ifndef __DAL_DDC_SERVICE_H__ 29 #define __DAL_DDC_SERVICE_H__ 30 31 #include "include/ddc_service_types.h" 32 #include "include/i2caux_interface.h" 33 34 #define EDID_SEGMENT_SIZE 256 35 36 /* Address range from 0x00 to 0x1F.*/ 37 #define DP_ADAPTOR_TYPE2_SIZE 0x20 38 #define DP_ADAPTOR_TYPE2_REG_ID 0x10 39 #define DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK 0x1D 40 /* Identifies adaptor as Dual-mode adaptor */ 41 #define DP_ADAPTOR_TYPE2_ID 0xA0 42 /* MHz*/ 43 #define DP_ADAPTOR_TYPE2_MAX_TMDS_CLK 600 44 /* MHz*/ 45 #define DP_ADAPTOR_TYPE2_MIN_TMDS_CLK 25 46 /* kHZ*/ 47 #define DP_ADAPTOR_DVI_MAX_TMDS_CLK 165000 48 /* kHZ*/ 49 #define DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK 165000 50 51 #define DDC_I2C_COMMAND_ENGINE I2C_COMMAND_ENGINE_SW 52 53 struct ddc_service; 54 struct graphics_object_id; 55 enum ddc_result; 56 struct av_sync_data; 57 struct dp_receiver_id_info; 58 59 struct i2c_payloads; 60 struct aux_payloads; 61 62 void dal_ddc_i2c_payloads_add( 63 struct i2c_payloads *payloads, 64 uint32_t address, 65 uint32_t len, 66 uint8_t *data, 67 bool write); 68 69 struct ddc_service_init_data { 70 struct graphics_object_id id; 71 struct dc_context *ctx; 72 struct dc_link *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_channel_operation_result *operation_result); 106 107 bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc, 108 struct aux_payload *payload); 109 110 uint32_t dc_link_aux_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