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Add I2C bus DXE driver and I2C host DXE driver following PI 1.3 spec.

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Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Leahy Leroy P <leroy.p.leahy@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14549 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Elvin Li
2013-08-14 01:16:06 +00:00
committed by li-elvin
parent 4006b0b550
commit 43e543bcaa
8 changed files with 3975 additions and 0 deletions
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75
MdeModulePkg/Bus/I2c/I2cDxe/I2cDxe.c Normal file
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/** @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;
}