| /* |
| * 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_I2C_ENGINE_H__ |
| #define __DAL_I2C_ENGINE_H__ |
| |
| enum i2c_channel_operation_result { |
| I2C_CHANNEL_OPERATION_SUCCEEDED, |
| I2C_CHANNEL_OPERATION_FAILED, |
| I2C_CHANNEL_OPERATION_NOT_GRANTED, |
| I2C_CHANNEL_OPERATION_IS_BUSY, |
| I2C_CHANNEL_OPERATION_NO_HANDLE_PROVIDED, |
| I2C_CHANNEL_OPERATION_CHANNEL_IN_USE, |
| I2C_CHANNEL_OPERATION_CHANNEL_CLIENT_MAX_ALLOWED, |
| I2C_CHANNEL_OPERATION_ENGINE_BUSY, |
| I2C_CHANNEL_OPERATION_TIMEOUT, |
| I2C_CHANNEL_OPERATION_NO_RESPONSE, |
| I2C_CHANNEL_OPERATION_HW_REQUEST_I2C_BUS, |
| I2C_CHANNEL_OPERATION_WRONG_PARAMETER, |
| I2C_CHANNEL_OPERATION_OUT_NB_OF_RETRIES, |
| I2C_CHANNEL_OPERATION_NOT_STARTED |
| }; |
| |
| struct i2c_request_transaction_data { |
| enum i2caux_transaction_action action; |
| enum i2c_channel_operation_result status; |
| uint8_t address; |
| uint32_t length; |
| uint8_t *data; |
| }; |
| |
| struct i2c_reply_transaction_data { |
| uint32_t length; |
| uint8_t *data; |
| }; |
| |
| struct i2c_engine; |
| |
| struct i2c_engine_funcs { |
| void (*destroy)( |
| struct i2c_engine **ptr); |
| uint32_t (*get_speed)( |
| const struct i2c_engine *engine); |
| void (*set_speed)( |
| struct i2c_engine *engine, |
| uint32_t speed); |
| bool (*acquire_engine)( |
| struct i2c_engine *engine, |
| struct ddc *ddc); |
| bool (*setup_engine)( |
| struct i2c_engine *engine); |
| void (*submit_channel_request)( |
| struct i2c_engine *engine, |
| struct i2c_request_transaction_data *request); |
| void (*process_channel_reply)( |
| struct i2c_engine *engine, |
| struct i2c_reply_transaction_data *reply); |
| enum i2c_channel_operation_result (*get_channel_status)( |
| struct i2c_engine *engine, |
| uint8_t *returned_bytes); |
| }; |
| |
| struct i2c_engine { |
| struct engine base; |
| const struct i2c_engine_funcs *funcs; |
| uint32_t timeout_delay; |
| uint32_t setup_limit; |
| uint32_t send_reset_length; |
| }; |
| |
| void dal_i2c_engine_construct( |
| struct i2c_engine *engine, |
| struct dc_context *ctx); |
| |
| void dal_i2c_engine_destruct( |
| struct i2c_engine *engine); |
| |
| bool dal_i2c_engine_setup_i2c_engine( |
| struct i2c_engine *engine); |
| |
| void dal_i2c_engine_submit_channel_request( |
| struct i2c_engine *engine, |
| struct i2c_request_transaction_data *request); |
| |
| void dal_i2c_engine_process_channel_reply( |
| struct i2c_engine *engine, |
| struct i2c_reply_transaction_data *reply); |
| |
| bool dal_i2c_engine_acquire( |
| struct engine *ptr, |
| struct ddc *ddc_handle); |
| |
| #endif |