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/** @file
Interface Definitions for I2C Lib.
Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
--*/
#include <Uefi.h>
#include <Library/IoLib.h>
#ifndef I2C_LIB_HEADER_H
#define I2C_LIB_HEADER_H
/**
Reads a Byte from I2C Device.
@param I2cControllerIndex I2C Bus no to which the I2C device has been connected
@param SlaveAddress Device Address from which the byte value has to be read
@param Offset Offset from which the data has to be read
@param ReadBytes Number of bytes to be read
@param *ReadBuffer Address to which the value read has to be stored
@return EFI_SUCCESS If the byte value has been successfully read
@return EFI_DEVICE_ERROR Operation Failed, Device Error
**/
EFI_STATUS
ByteReadI2C(
IN UINT8 BusNo,
IN UINT8 SlaveAddress,
IN UINT8 Offset,
IN UINTN ReadBytes,
OUT UINT8 *ReadBuffer
);
/**
Writes a Byte to I2C Device.
@param I2cControllerIndex I2C Bus no to which the I2C device has been connected
@param SlaveAddress Device Address from which the byte value has to be written
@param Offset Offset from which the data has to be written
@param WriteBytes Number of bytes to be written
@param *Byte Address to which the value written is stored
@return EFI_SUCCESS If the byte value has been successfully read
@return EFI_DEVICE_ERROR Operation Failed, Device Error
**/
EFI_STATUS ByteWriteI2C(
IN UINT8 BusNo,
IN UINT8 SlaveAddress,
IN UINT8 Offset,
IN UINTN WriteBytes,
IN UINT8 *WriteBuffer
);
#endif
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