nortti
/
sortix-mirror
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Thread secured the sound driver.

This commit is contained in:
Jonas 'Sortie' Termansen 2012-08-02 20:39:25 +02:00
parent 5f93e157d5
commit 69c23aed56
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sortix/sound.cpp
View File

@ -1,6 +1,6 @@
/******************************************************************************
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
This file is part of Sortix.
@ -23,6 +23,7 @@
******************************************************************************/
#include <sortix/kernel/platform.h>
#include <sortix/kernel/kthread.h>
#include "sound.h"
#include "syscall.h"
@ -30,8 +31,11 @@ namespace Sortix
{
namespace Sound
{
kthread_mutex_t soundlock;
void Mute()
{
ScopedLock lock(&soundlock);
uint8_t TMP = (CPU::InPortB(0x61)) & 0xFC;
CPU::OutPortB(0x61, TMP);
@ -39,6 +43,7 @@ namespace Sortix
void Play(nat Frequency)
{
ScopedLock lock(&soundlock);
//Set the PIT to the desired frequency
uint32_t Div = 1193180 / Frequency;
CPU::OutPortB(0x43, 0xB6);
@ -61,6 +66,7 @@ namespace Sortix
void Init()
{
soundlock = KTHREAD_MUTEX_INITIALIZER;
Syscall::Register(SYSCALL_SET_FREQUENCY, (void*) SysSetFrequency);
}
}

2
sortix/sound.h
View File

@ -1,6 +1,6 @@
/******************************************************************************
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
Coypright(C) Jonas 'Sortie' Termansen 2011, 2012.
This file is part of Sortix.