diff options
Diffstat (limited to 'Vlv2TbltDevicePkg/PlatformDxe/LegacySpeaker.c')
| -rw-r--r-- | Vlv2TbltDevicePkg/PlatformDxe/LegacySpeaker.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/Vlv2TbltDevicePkg/PlatformDxe/LegacySpeaker.c b/Vlv2TbltDevicePkg/PlatformDxe/LegacySpeaker.c new file mode 100644 index 0000000000..9ac816dd40 --- /dev/null +++ b/Vlv2TbltDevicePkg/PlatformDxe/LegacySpeaker.c @@ -0,0 +1,166 @@ +/** @file
+
+ Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials are licensed and made available under
+ the terms and conditions of the BSD License that accompanies this distribution.
+ The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+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;
+
+
+}
|