Vlv2TbltDevicePkg/Include/Protocol/Speaker.h

   1 /*++
   2
   3   Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7
   8
   9 Module Name:
  10
  11   Speaker.h
  12
  13 Abstract:
  14
  15   EFI Speaker Interface Protocol
  16
  17 Revision History
  18
  19 **/
  20
  21 #ifndef _EFI_SPEAKER_H
  22 #define _EFI_SPEAKER_H
  23
  24 //
  25 // Global Id for Speaker Interface
  26 //
  27 #define EFI_SPEAKER_INTERFACE_PROTOCOL_GUID \
  28   { \
  29     0x400b4476, 0x3081, 0x11d6, 0x87, 0xed, 0x00, 0x06, 0x29, 0x45, 0xc3, 0xb9 \
  30   }
  31
  32 typedef struct _EFI_SPEAKER_IF_PROTOCOL  EFI_SPEAKER_IF_PROTOCOL;
  33
  34 //
  35 // Beep Code
  36 //
  37 typedef
  38 EFI_STATUS
  39 (EFIAPI *EFI_GENERATE_BEEP) (
  40   IN EFI_SPEAKER_IF_PROTOCOL                * This,
  41   IN     UINTN                              NumberOfBeep,
  42   IN     UINTN                              BeepDuration,
  43   IN     UINTN                              TimeInterval
  44   );
  45
  46 //
  47 // Set Frequency
  48 //
  49 typedef
  50 EFI_STATUS
  51 (EFIAPI *EFI_SPEAKER_SET_FREQUENCY) (
  52   IN EFI_SPEAKER_IF_PROTOCOL               * This,
  53   IN     UINT16                            Frequency
  54   );
  55
  56 //
  57 // Protocol definition
  58 //
  59 struct _EFI_SPEAKER_IF_PROTOCOL {
  60   EFI_SPEAKER_SET_FREQUENCY SetSpeakerToneFrequency;
  61   EFI_GENERATE_BEEP         GenerateBeep;
  62 } ;
  63
  64 extern EFI_GUID gEfiSpeakerInterfaceProtocolGuid;
  65 #endif