1 files changed, 64 insertions, 0 deletions
diff --git a/OptionRomPkg/Include/Library/DxeI2cLib.h b/OptionRomPkg/Include/Library/DxeI2cLib.h
new file mode 100644
index 0000000000..5325560cb9
--- /dev/null
+++ b/OptionRomPkg/Include/Library/DxeI2cLib.h
@@ -0,0 +1,64 @@
+/** @file
+  I2c Bus byte read/write functions.
+
+  Copyright (c) 2008, Intel Corporation
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Protocol/PciIo.h>
+
+/**
+  Read one byte data on I2C Bus.
+
+  Read one byte data from the slave device connectet to I2C Bus.
+  If Data is NULL, then ASSERT().
+
+  @param  PciIo              The pointer to PCI_IO_PROTOCOL.
+  @param  DeviceAddress      Slave device's address.
+  @param  RegisterAddress    The register address on slave device.
+  @param  Data               The pointer to returned data if EFI_SUCCESS returned.
+
+  @retval EFI_DEVICE_ERROR
+  @retval EFI_SUCCESS
+
+**/
+EFI_STATUS
+EFIAPI
+I2cReadByte (
+  EFI_PCI_IO_PROTOCOL    *PciIo,
+  UINT8                  DeviceAddress,
+  UINT8                  RegisterAddress,
+  UINT8                  *Data
+  );
+
+/**
+  Write one byte data onto I2C Bus.
+
+  Write one byte data to the slave device connectet to I2C Bus.
+  If Data is NULL, then ASSERT().
+
+  @param  PciIo              The pointer to PCI_IO_PROTOCOL.
+  @param  DeviceAddress      Slave device's address.
+  @param  RegisterAddress    The register address on slave device.
+  @param  Data               The pointer to write data.
+
+  @retval EFI_DEVICE_ERROR
+  @retval EFI_SUCCESS
+
+**/
+EFI_STATUS
+EFIAPI
+I2cWriteByte (
+  EFI_PCI_IO_PROTOCOL    *PciIo,
+  UINT8                  DeviceAddress,
+  UINT8                  RegisterAddress,
+  UINT8                  *Data
+  );
+