ComponentName.c

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#include "KeyBoard.h"
 
//
// EFI Component Name Protocol
//
GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL  gUsbKeyboardComponentName = {
  UsbKeyboardComponentNameGetDriverName,
  UsbKeyboardComponentNameGetControllerName,
  "eng"
};
 
//
// EFI Component Name 2 Protocol
//
GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL  gUsbKeyboardComponentName2 = {
  (EFI_COMPONENT_NAME2_GET_DRIVER_NAME)UsbKeyboardComponentNameGetDriverName,
  (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME)UsbKeyboardComponentNameGetControllerName,
  "en"
};
 
GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE  mUsbKeyboardDriverNameTable[] = {
  { "eng;en", L"Usb Keyboard Driver" },
  { NULL,     NULL                   }
};
 
EFI_STATUS
EFIAPI
UsbKeyboardComponentNameGetDriverName (
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  IN  CHAR8                        *Language,
  OUT CHAR16                       **DriverName
  )
{
  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           mUsbKeyboardDriverNameTable,
           DriverName,
           (BOOLEAN)(This == &gUsbKeyboardComponentName)
           );
}
 
EFI_STATUS
EFIAPI
UsbKeyboardComponentNameGetControllerName (
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,
  IN  EFI_HANDLE                   ControllerHandle,
  IN  EFI_HANDLE                   ChildHandle        OPTIONAL,
  IN  CHAR8                        *Language,
  OUT CHAR16                       **ControllerName
  )
{
  EFI_STATUS                      Status;
  USB_KB_DEV                      *UsbKbDev;
  EFI_SIMPLE_TEXT_INPUT_PROTOCOL  *SimpleTxtIn;
  EFI_USB_IO_PROTOCOL             *UsbIoProtocol;
 
  //
  // This is a device driver, so ChildHandle must be NULL.
  //
  if (ChildHandle != NULL) {
    return EFI_UNSUPPORTED;
  }
 
  //
  // Check Controller's handle
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiUsbIoProtocolGuid,
                  (VOID **)&UsbIoProtocol,
                  gUsbKeyboardDriverBinding.DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_BY_DRIVER
                  );
  if (!EFI_ERROR (Status)) {
    gBS->CloseProtocol (
           ControllerHandle,
           &gEfiUsbIoProtocolGuid,
           gUsbKeyboardDriverBinding.DriverBindingHandle,
           ControllerHandle
           );
 
    return EFI_UNSUPPORTED;
  }
 
  if (Status != EFI_ALREADY_STARTED) {
    return EFI_UNSUPPORTED;
  }
 
  //
  // Get the device context
  //
  Status = gBS->OpenProtocol (
                  ControllerHandle,
                  &gEfiSimpleTextInProtocolGuid,
                  (VOID **)&SimpleTxtIn,
                  gUsbKeyboardDriverBinding.DriverBindingHandle,
                  ControllerHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
 
  if (EFI_ERROR (Status)) {
    return Status;
  }
 
  UsbKbDev = USB_KB_DEV_FROM_THIS (SimpleTxtIn);
 
  return LookupUnicodeString2 (
           Language,
           This->SupportedLanguages,
           UsbKbDev->ControllerNameTable,
           ControllerName,
           (BOOLEAN)(This == &gUsbKeyboardComponentName)
           );
}