i2c.h

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/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 *
 * this file licensed under the Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 * http://license.coscl.org.cn/MulanPSL2
 *
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
 * PURPOSE.
 * See the Mulan PSL v2 for more details.
 *
 * Create: 2025-07-17
 */
 
#ifndef DRIVER_I2C_H
#define DRIVER_I2C_H
#include <optional>
#include "driver.h"
 
namespace DRIVER_I2C {
using namespace bcal;
 
constexpr string_view_t I2C_TRACE_NAME = "i2c";
 
struct I2cConfig {
    uint32_t speed; 
    uint32_t mode; 
    uint32_t addr; 
    uint32_t use_smbus;
};
 
struct I2cWriteMsg {
    uint8_t rw: 1; 
    uint8_t addr: 7; 
    uint8_t data[1]; 
};
 
class I2c : public IDriver {
public:
    virtual std::tuple<int32_t, std::optional<string_t>> read(int32_t index, uint32_t length, uint32_t timeout, uint32_t retry, const string_t &in_data) = 0;
 
    virtual int32_t write(int32_t index, const string_view_t &in_data, uint32_t timeout, uint8_t write_delay) = 0;
 
    virtual string_t slave_cache_read(int32_t index, uint32_t offset, uint32_t size) = 0;
 
    virtual int32_t slave_cache_write(int32_t index, uint32_t offset, const string_view_t &val) = 0;
 
    virtual void reset(int32_t index) = 0;
};
}  // namespace I2C
 
#endif // DRIVER_I2C_H