ARM Packages: Fixed line endings

[mirror_edk2.git] / Omap35xxPkg / TPS65950Dxe / TPS65950.c

/** @file\r
\r
  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
  \r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <Uefi.h>\r
\r
#include <TPS65950.h>\r
\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
#include <Protocol/EmbeddedExternalDevice.h>\r
#include <Protocol/SmbusHc.h>\r
\r
EFI_SMBUS_HC_PROTOCOL *Smbus;\r
\r
EFI_STATUS\r
Read (\r
  IN  EMBEDDED_EXTERNAL_DEVICE    *This,\r
  IN  UINTN                       Register,\r
  IN  UINTN                       Length,\r
  OUT VOID                        *Buffer\r
  )\r
{\r
  EFI_STATUS               Status;\r
  EFI_SMBUS_DEVICE_ADDRESS SlaveAddress; \r
  UINT8                    DeviceRegister;\r
  UINTN                    DeviceRegisterLength = 1;\r
\r
  SlaveAddress.SmbusDeviceAddress = EXTERNAL_DEVICE_REGISTER_TO_SLAVE_ADDRESS(Register);\r
  DeviceRegister = (UINT8)EXTERNAL_DEVICE_REGISTER_TO_REGISTER(Register);\r
\r
  //Write DeviceRegister.\r
  Status = Smbus->Execute(Smbus, SlaveAddress, 0, EfiSmbusWriteBlock, FALSE, &DeviceRegisterLength, &DeviceRegister);\r
  if (EFI_ERROR(Status)) {\r
    return Status;\r
  }\r
\r
  //Read Data\r
  Status = Smbus->Execute(Smbus, SlaveAddress, 0, EfiSmbusReadBlock, FALSE, &Length, Buffer);\r
  return Status;\r
}\r
\r
EFI_STATUS\r
Write (\r
  IN EMBEDDED_EXTERNAL_DEVICE   *This,\r
  IN UINTN                      Register,\r
  IN UINTN                      Length,\r
  IN VOID                       *Buffer\r
  )\r
{\r
  EFI_STATUS               Status;\r
  EFI_SMBUS_DEVICE_ADDRESS SlaveAddress; \r
  UINT8                    DeviceRegister;\r
  UINTN                    DeviceBufferLength = Length + 1;\r
  UINT8                    *DeviceBuffer;\r
\r
  SlaveAddress.SmbusDeviceAddress = EXTERNAL_DEVICE_REGISTER_TO_SLAVE_ADDRESS(Register);\r
  DeviceRegister = (UINT8)EXTERNAL_DEVICE_REGISTER_TO_REGISTER(Register);\r
\r
  //Prepare buffer for writing\r
  DeviceBuffer = (UINT8 *)AllocatePool(DeviceBufferLength);\r
  if (DeviceBuffer == NULL) {\r
    Status = EFI_OUT_OF_RESOURCES;\r
    goto exit;\r
  }\r
\r
  //Set Device register followed by data to write.\r
  DeviceBuffer[0] = DeviceRegister;\r
  CopyMem(&DeviceBuffer[1], Buffer, Length);\r
\r
  //Write Data\r
  Status = Smbus->Execute(Smbus, SlaveAddress, 0, EfiSmbusWriteBlock, FALSE, &DeviceBufferLength, DeviceBuffer);\r
  if (EFI_ERROR(Status)) {\r
    goto exit;\r
  }\r
\r
exit:\r
  if (DeviceBuffer) {\r
    FreePool(DeviceBuffer);\r
  }\r
\r
  return Status;\r
}\r
\r
EMBEDDED_EXTERNAL_DEVICE ExternalDevice = {\r
  Read,\r
  Write\r
};\r
\r
EFI_STATUS\r
TPS65950Initialize (\r
  IN EFI_HANDLE         ImageHandle,\r
  IN EFI_SYSTEM_TABLE   *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
  \r
  Status = gBS->LocateProtocol(&gEfiSmbusHcProtocolGuid, NULL, (VOID **)&Smbus);\r
  ASSERT_EFI_ERROR(Status);\r
  \r
  Status = gBS->InstallMultipleProtocolInterfaces(&ImageHandle, &gEmbeddedExternalDeviceProtocolGuid, &ExternalDevice, NULL);\r
  return Status;\r
}\r