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/*
* sound/sgalaxy.c
*
* Low level driver for Aztech Sound Galaxy cards.
* Copyright 1998 Artur Skawina
*
* Supported cards:
* Aztech Sound Galaxy Waverider Pro 32 - 3D
* Aztech Sound Galaxy Washington 16
*
* Based on cs4232.c by Hannu Savolainen and Alan Cox.
*/
/*
* Copyright (C) by Hannu Savolainen 1993-1997
*
* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this software
* for more info.
*/
#include <linux/config.h>
#include <linux/module.h>
#include "sound_config.h"
#include "soundmodule.h"
#if defined(CONFIG_SGALAXY) || defined (MODULE)
static void sleep( unsigned howlong )
{
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(howlong);
}
#define DPORT 0x80
/* Sound Blaster regs */
#define SBDSP_RESET 0x6
#define SBDSP_READ 0xA
#define SBDSP_COMMAND 0xC
#define SBDSP_STATUS SBDSP_COMMAND
#define SBDSP_DATA_AVAIL 0xE
static int sb_rst(int base)
{
int i;
outb( 1, base+SBDSP_RESET ); /* reset the DSP */
outb( 0, base+SBDSP_RESET );
for ( i=0; i<500; i++ ) /* delay */
inb(DPORT);
for ( i=0; i<100000; i++ )
{
if ( inb( base+SBDSP_DATA_AVAIL )&0x80 )
break;
}
if ( inb( base+SBDSP_READ )!=0xAA )
return 0;
return 1;
}
static int sb_cmd( int base, unsigned char val )
{
int i;
for ( i=100000; i; i-- )
{
if ( (inb( base+SBDSP_STATUS )&0x80)==0 )
{
outb( val, base+SBDSP_COMMAND );
break;
}
}
return i; /* i>0 == success */
}
#define ai_sgbase driver_use_1
int probe_sgalaxy( struct address_info *ai )
{
if ( check_region( ai->io_base, 8 ) )
{
printk(KERN_ERR "sgalaxy: WSS IO port 0x%03x not available\n", ai->io_base);
return 0;
}
if ( ad1848_detect( ai->io_base+4, NULL, ai->osp ) )
return probe_ms_sound(ai); /* The card is already active, check irq etc... */
if ( check_region( ai->ai_sgbase, 0x10 ) )
{
printk(KERN_ERR "sgalaxy: SB IO port 0x%03x not available\n", ai->ai_sgbase);
return 0;
}
/* switch to MSS/WSS mode */
sb_rst( ai->ai_sgbase );
sb_cmd( ai->ai_sgbase, 9 );
sb_cmd( ai->ai_sgbase, 0 );
sleep( HZ/10 );
return probe_ms_sound(ai);
}
void attach_sgalaxy( struct address_info *ai )
{
int n;
request_region( ai->ai_sgbase, 0x10, "SoundGalaxy SB" );
attach_ms_sound( ai );
n=ai->slots[0];
if (n!=-1 && audio_devs[n]->mixer_dev != -1 )
{
AD1848_REROUTE( SOUND_MIXER_LINE1, SOUND_MIXER_LINE ); /* Line-in */
AD1848_REROUTE( SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH ); /* FM+Wavetable*/
AD1848_REROUTE( SOUND_MIXER_LINE3, SOUND_MIXER_CD ); /* CD */
}
}
void unload_sgalaxy( struct address_info *ai )
{
unload_ms_sound( ai );
release_region( ai->ai_sgbase, 0x10 );
}
#ifdef MODULE
int io = -1;
int irq = -1;
int dma = -1;
int dma2 = -1;
int sgbase = -1;
MODULE_PARM(io,"i");
MODULE_PARM(irq,"i");
MODULE_PARM(dma,"i");
MODULE_PARM(dma2,"i");
MODULE_PARM(sgbase,"i");
EXPORT_NO_SYMBOLS;
struct address_info ai;
int init_module(void)
{
if ( io==-1 || irq==-1 || dma==-1 || sgbase==-1 )
{
printk(KERN_ERR "sgalaxy: io, irq, dma and sgbase must be set.\n");
return -EINVAL;
}
ai.io_base = io;
ai.irq = irq;
ai.dma = dma;
ai.dma2 = dma2;
ai.ai_sgbase = sgbase;
if ( probe_sgalaxy( &ai )==0 )
return -ENODEV;
attach_sgalaxy( &ai );
SOUND_LOCK;
return 0;
}
void cleanup_module(void)
{
unload_sgalaxy( &ai );
SOUND_LOCK_END;
}
#endif
#endif
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