mirror of https://github.com/acidanthera/audk.git
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
|
/** @file
|
||
|
|
This file implements the entrypoint and unload function for I2C DXE module.
|
||
|
|
|
||
|
|
Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
|
||
|
|
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 "I2cDxe.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
The user Entry Point for I2C module. The user code starts with this function.
|
||
|
|
|
||
|
|
@param[in] ImageHandle The firmware allocated handle for the EFI image.
|
||
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The entry point is executed successfully.
|
||
|
|
@retval other Some error occurs when executing this entry point.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
InitializeI2c(
|
||
|
|
IN EFI_HANDLE ImageHandle,
|
||
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Install driver model protocol(s).
|
||
|
|
//
|
||
|
|
Status = InitializeI2cHost ( ImageHandle, SystemTable );
|
||
|
|
if ( !EFI_ERROR ( Status ))
|
||
|
|
{
|
||
|
|
Status = InitializeI2cBus ( ImageHandle, SystemTable );
|
||
|
|
}
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
This is the unload handle for I2C module.
|
||
|
|
|
||
|
|
Disconnect the driver specified by ImageHandle from all the devices in the handle database.
|
||
|
|
Uninstall all the protocols installed in the driver entry point.
|
||
|
|
|
||
|
|
@param[in] ImageHandle The drivers' driver image.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The image is unloaded.
|
||
|
|
@retval Others Failed to unload the image.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
I2cUnload (
|
||
|
|
IN EFI_HANDLE ImageHandle
|
||
|
|
)
|
||
|
|
{
|
||
|
|
EFI_STATUS Status;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Disconnect the drivers
|
||
|
|
//
|
||
|
|
Status = I2cBusUnload ( ImageHandle );
|
||
|
|
if ( !EFI_ERROR ( Status )) {
|
||
|
|
Status = I2cHostUnload ( ImageHandle );
|
||
|
|
}
|
||
|
|
return Status;
|
||
|
|
}
|