/*
|
* 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
|
