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
 51struct ddc_service;
 52struct graphics_object_id;
 53enum ddc_result;
 54struct av_sync_data;
 55struct dp_receiver_id_info;
 56
 57struct i2c_payloads;
 58struct aux_payloads;
 59enum aux_return_code_type;
 60
 61void 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
 68struct 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
 75struct ddc_service *dal_ddc_service_create(
 76		struct ddc_service_init_data *ddc_init_data);
 77
 78void dal_ddc_service_destroy(struct ddc_service **ddc);
 79
 80enum ddc_service_type dal_ddc_service_get_type(struct ddc_service *ddc);
 81
 82void dal_ddc_service_set_transaction_type(
 83		struct ddc_service *ddc,
 84		enum ddc_transaction_type type);
 85
 86bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc);
 87
 88void dal_ddc_service_i2c_query_dp_dual_mode_adaptor(
 89		struct ddc_service *ddc,
 90		struct display_sink_capability *sink_cap);
 91
 92bool 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
100bool dal_ddc_submit_aux_command(struct ddc_service *ddc,
101		struct aux_payload *payload);
102
103int dc_link_aux_transfer_raw(struct ddc_service *ddc,
104		struct aux_payload *payload,
105		enum aux_return_code_type *operation_result);
106
107bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc,
108		struct aux_payload *payload);
109
110bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc,
111		uint32_t timeout);
112
113void dal_ddc_service_write_scdc_data(
114		struct ddc_service *ddc_service,
115		uint32_t pix_clk,
116		bool lte_340_scramble);
117
118void dal_ddc_service_read_scdc_data(
119		struct ddc_service *ddc_service);
120
121void ddc_service_set_dongle_type(struct ddc_service *ddc,
122		enum display_dongle_type dongle_type);
123
124void dal_ddc_service_set_ddc_pin(
125		struct ddc_service *ddc_service,
126		struct ddc *ddc);
127
128struct ddc *dal_ddc_service_get_ddc_pin(struct ddc_service *ddc_service);
129
130uint32_t get_defer_delay(struct ddc_service *ddc);
131
132#endif /* __DAL_DDC_SERVICE_H__ */
133