1 /** @file 2 This file implements the entrypoint and unload function for I2C DXE module. 3 4 Copyright (c) 2013, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #include "I2cDxe.h" 16 17 /** 18 The user Entry Point for I2C module. The user code starts with this function. 19 20 @param[in] ImageHandle The firmware allocated handle for the EFI image. 21 @param[in] SystemTable A pointer to the EFI System Table. 22 23 @retval EFI_SUCCESS The entry point is executed successfully. 24 @retval other Some error occurs when executing this entry point. 25 26 **/ 27 EFI_STATUS 28 EFIAPI 29 InitializeI2c( 30 IN EFI_HANDLE ImageHandle, 31 IN EFI_SYSTEM_TABLE *SystemTable 32 ) 33 { 34 EFI_STATUS Status; 35 36 // 37 // Install driver model protocol(s). 38 // 39 Status = InitializeI2cHost ( ImageHandle, SystemTable ); 40 if ( !EFI_ERROR ( Status )) 41 { 42 Status = InitializeI2cBus ( ImageHandle, SystemTable ); 43 } 44 return Status; 45 } 46 47 /** 48 This is the unload handle for I2C module. 49 50 Disconnect the driver specified by ImageHandle from all the devices in the handle database. 51 Uninstall all the protocols installed in the driver entry point. 52 53 @param[in] ImageHandle The drivers' driver image. 54 55 @retval EFI_SUCCESS The image is unloaded. 56 @retval Others Failed to unload the image. 57 58 **/ 59 EFI_STATUS 60 EFIAPI 61 I2cUnload ( 62 IN EFI_HANDLE ImageHandle 63 ) 64 { 65 EFI_STATUS Status; 66 67 // 68 // Disconnect the drivers 69 // 70 Status = I2cBusUnload ( ImageHandle ); 71 if ( !EFI_ERROR ( Status )) { 72 Status = I2cHostUnload ( ImageHandle ); 73 } 74 return Status; 75 } 76
