| // Copyright 2021 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| /* |
| * I2C device handler. |
| */ |
| #ifndef HPS_HAL_I2C_H_ |
| #define HPS_HAL_I2C_H_ |
| |
| #include <memory> |
| |
| #include <stdint.h> |
| #include <string> |
| |
| #include <base/files/file_path.h> |
| |
| #include "hps/dev.h" |
| |
| struct i2c_msg; |
| |
| namespace hps { |
| |
| class I2CDev : public DevInterface { |
| public: |
| ~I2CDev() override {} |
| int Open(); |
| bool ReadDevice(uint8_t cmd, uint8_t* data, size_t len) override; |
| bool WriteDevice(uint8_t cmd, const uint8_t* data, size_t len) override; |
| std::unique_ptr<WakeLock> CreateWakeLock() override; |
| static std::unique_ptr<DevInterface> Create(const std::string& bus, |
| uint8_t address, |
| const std::string& power_control); |
| |
| private: |
| I2CDev(const std::string& bus, |
| uint8_t address, |
| const base::FilePath& power_control); |
| bool Ioc(struct i2c_msg* msg, size_t count); |
| const std::string bus_; |
| base::FilePath power_control_; |
| uint8_t address_; |
| int fd_; |
| }; |
| |
| } // namespace hps |
| |
| #endif // HPS_HAL_I2C_H_ |