| /* |
| * Copyright 2012-15 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: AMD |
| * |
| */ |
| |
| #ifndef __DAL_ENGINE_H__ |
| #define __DAL_ENGINE_H__ |
| |
| #include "dc_ddc_types.h" |
| |
| enum i2caux_transaction_operation { |
| I2CAUX_TRANSACTION_READ, |
| I2CAUX_TRANSACTION_WRITE |
| }; |
| |
| enum i2caux_transaction_address_space { |
| I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C = 1, |
| I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD |
| }; |
| |
| struct i2caux_transaction_payload { |
| enum i2caux_transaction_address_space address_space; |
| uint32_t address; |
| uint32_t length; |
| uint8_t *data; |
| }; |
| |
| enum i2caux_transaction_status { |
| I2CAUX_TRANSACTION_STATUS_UNKNOWN = (-1L), |
| I2CAUX_TRANSACTION_STATUS_SUCCEEDED, |
| I2CAUX_TRANSACTION_STATUS_FAILED_CHANNEL_BUSY, |
| I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT, |
| I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR, |
| I2CAUX_TRANSACTION_STATUS_FAILED_NACK, |
| I2CAUX_TRANSACTION_STATUS_FAILED_INCOMPLETE, |
| I2CAUX_TRANSACTION_STATUS_FAILED_OPERATION, |
| I2CAUX_TRANSACTION_STATUS_FAILED_INVALID_OPERATION, |
| I2CAUX_TRANSACTION_STATUS_FAILED_BUFFER_OVERFLOW, |
| I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON |
| }; |
| |
| struct i2caux_transaction_request { |
| enum i2caux_transaction_operation operation; |
| struct i2caux_transaction_payload payload; |
| enum i2caux_transaction_status status; |
| }; |
| |
| enum i2caux_engine_type { |
| I2CAUX_ENGINE_TYPE_UNKNOWN = (-1L), |
| I2CAUX_ENGINE_TYPE_AUX, |
| I2CAUX_ENGINE_TYPE_I2C_DDC_HW, |
| I2CAUX_ENGINE_TYPE_I2C_GENERIC_HW, |
| I2CAUX_ENGINE_TYPE_I2C_SW |
| }; |
| |
| enum i2c_default_speed { |
| I2CAUX_DEFAULT_I2C_HW_SPEED = 50, |
| I2CAUX_DEFAULT_I2C_SW_SPEED = 50 |
| }; |
| |
| struct engine; |
| |
| struct engine_funcs { |
| enum i2caux_engine_type (*get_engine_type)( |
| const struct engine *engine); |
| bool (*acquire)( |
| struct engine *engine, |
| struct ddc *ddc); |
| bool (*submit_request)( |
| struct engine *engine, |
| struct i2caux_transaction_request *request, |
| bool middle_of_transaction); |
| void (*release_engine)( |
| struct engine *engine); |
| }; |
| |
| struct engine { |
| const struct engine_funcs *funcs; |
| uint32_t inst; |
| struct ddc *ddc; |
| struct dc_context *ctx; |
| }; |
| |
| void dal_i2caux_construct_engine( |
| struct engine *engine, |
| struct dc_context *ctx); |
| |
| void dal_i2caux_destruct_engine( |
| struct engine *engine); |
| |
| #endif |