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/** @file
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
Module Name:
LegacySpeaker.c
Abstract:
This file implements DXE for Legacy Speaker.
--*/
#include "LegacySpeaker.h"
/**
This function will enable the speaker to generate beep
@retval EFI_STATUS
**/
EFI_STATUS
TurnOnSpeaker (
)
{
UINT8 Data;
Data = IoRead8 (EFI_SPEAKER_CONTROL_PORT);
Data |= 0x03;
IoWrite8(EFI_SPEAKER_CONTROL_PORT, Data);
return EFI_SUCCESS;
}
/**
This function will stop beep from speaker.
@retval Status
**/
EFI_STATUS
TurnOffSpeaker (
)
{
UINT8 Data;
Data = IoRead8 (EFI_SPEAKER_CONTROL_PORT);
Data &= 0xFC;
IoWrite8(EFI_SPEAKER_CONTROL_PORT, Data);
return EFI_SUCCESS;
}
/**
Generate beep sound based upon number of beeps and duration of the beep
@param NumberOfBeeps Number of beeps which user want to produce
@param BeepDuration Duration for speaker gate need to be enabled
@param TimeInterval Interval between each beep
@retval Does not return if the reset takes place.
EFI_INVALID_PARAMETER If ResetType is invalid.
**/
EFI_STATUS
OutputBeep (
IN UINTN NumberOfBeep,
IN UINTN BeepDuration,
IN UINTN TimeInterval
)
{
UINTN Num;
for (Num=0; Num < NumberOfBeep; Num++) {
TurnOnSpeaker ();
//
// wait some time,at least 120us
//
gBS->Stall (BeepDuration);
TurnOffSpeaker();
gBS->Stall (TimeInterval);
}
return EFI_SUCCESS;
}
/**
This function will program the speaker tone frequency. The value should be with 64k
boundary since it takes only 16 bit value which gets programmed in two step IO opearattion
@param Frequency A value which should be 16 bit only.
@retval EFI_SUCESS
**/
EFI_STATUS
EFIAPI
ProgramToneFrequency (
IN EFI_SPEAKER_IF_PROTOCOL * This,
IN UINT16 Frequency
)
{
UINT8 Data;
Data = 0xB6;
IoWrite8(EFI_TIMER_CONTROL_PORT, Data);
Data = (UINT8)(Frequency & 0x00FF);
IoWrite8(EFI_TIMER_2_PORT, Data);
Data = (UINT8)((Frequency & 0xFF00) >> 8);
IoWrite8(EFI_TIMER_2_PORT, Data);
return EFI_SUCCESS;
}
/**
This function will generate the beep for specified duration.
@param NumberOfBeeps Number of beeps which user want to produce
@param BeepDuration Duration for speaker gate need to be enabled
@param TimeInterval Interval between each beep
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
GenerateBeepTone (
IN EFI_SPEAKER_IF_PROTOCOL * This,
IN UINTN NumberOfBeeps,
IN UINTN BeepDuration,
IN UINTN TimeInterval
)
{
if ((NumberOfBeeps == 1) && (BeepDuration == 0) && (TimeInterval == 0)) {
TurnOnSpeaker ();
return EFI_SUCCESS;
}
if ((NumberOfBeeps == 0) && (BeepDuration == 0) && (TimeInterval == 0)) {
TurnOffSpeaker ();
return EFI_SUCCESS;
}
if (BeepDuration == 0) {
BeepDuration = EFI_DEFAULT_SHORT_BEEP_DURATION;
}
if (TimeInterval == 0) {
TimeInterval = EFI_DEFAULT_BEEP_TIME_INTERVAL;
}
OutputBeep (NumberOfBeeps, BeepDuration, TimeInterval);
return EFI_SUCCESS;
}
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