Viewing file:  opl3sa.c (6.57 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* sound/opl3sa.c
*
* Low level driver for Yamaha YMF701B aka OPL3-SA chip
*
*
*
* 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.
*
* Changes:
* Alan Cox Modularisation
* Christoph Hellwig Adapted to module_init/module_exit
* Arnaldo C. de Melo got rid of attach_uart401
*
* FIXME:
* Check for install of mpu etc is wrong, should check result of the mss stuff
*/
#include <linux/init.h>
#include <linux/module.h>
#undef SB_OK
#include "sound_config.h"
#include "ad1848.h"
#include "mpu401.h"
#ifdef SB_OK
#include "sb.h"
static int sb_initialized = 0;
#endif
static int kilroy_was_here = 0; /* Don't detect twice */
static int mpu_initialized = 0;
static int *opl3sa_osp = NULL;
static unsigned char opl3sa_read(int addr)
{
unsigned long flags;
unsigned char tmp;
save_flags(flags);
cli();
outb((0x1d), 0xf86); /* password */
outb(((unsigned char) addr), 0xf86); /* address */
tmp = inb(0xf87); /* data */
restore_flags(flags);
return tmp;
}
static void opl3sa_write(int addr, int data)
{
unsigned long flags;
save_flags(flags);
cli();
outb((0x1d), 0xf86); /* password */
outb(((unsigned char) addr), 0xf86); /* address */
outb(((unsigned char) data), 0xf87); /* data */
restore_flags(flags);
}
static int __init opl3sa_detect(void)
{
int tmp;
if (((tmp = opl3sa_read(0x01)) & 0xc4) != 0x04)
{
DDB(printk("OPL3-SA detect error 1 (%x)\n", opl3sa_read(0x01)));
/* return 0; */
}
/*
* Check that the password feature has any effect
*/
if (inb(0xf87) == tmp)
{
DDB(printk("OPL3-SA detect failed 2 (%x/%x)\n", tmp, inb(0xf87)));
return 0;
}
tmp = (opl3sa_read(0x04) & 0xe0) >> 5;
if (tmp != 0 && tmp != 1)
{
DDB(printk("OPL3-SA detect failed 3 (%d)\n", tmp));
return 0;
}
DDB(printk("OPL3-SA mode %x detected\n", tmp));
opl3sa_write(0x01, 0x00); /* Disable MSS */
opl3sa_write(0x02, 0x00); /* Disable SB */
opl3sa_write(0x03, 0x00); /* Disable MPU */
return 1;
}
/*
* Probe and attach routines for the Windows Sound System mode of
* OPL3-SA
*/
static int __init probe_opl3sa_wss(struct address_info *hw_config)
{
int ret;
unsigned char tmp = 0x24; /* WSS enable */
if (check_region(0xf86, 2)) /* Control port is busy */
return 0;
/*
* Check if the IO port returns valid signature. The original MS Sound
* system returns 0x04 while some cards (OPL3-SA for example)
* return 0x00.
*/
if (check_region(hw_config->io_base, 8))
{
printk(KERN_ERR "OPL3-SA: MSS I/O port conflict (%x)\n", hw_config->io_base);
return 0;
}
opl3sa_osp = hw_config->osp;
if (!opl3sa_detect())
{
printk(KERN_ERR "OSS: OPL3-SA chip not found\n");
return 0;
}
switch (hw_config->io_base)
{
case 0x530:
tmp |= 0x00;
break;
case 0xe80:
tmp |= 0x08;
break;
case 0xf40:
tmp |= 0x10;
break;
case 0x604:
tmp |= 0x18;
break;
default:
printk(KERN_ERR "OSS: Unsupported OPL3-SA/WSS base %x\n", hw_config->io_base);
return 0;
}
opl3sa_write(0x01, tmp); /* WSS setup register */
kilroy_was_here = 1;
ret = probe_ms_sound(hw_config);
if (ret)
request_region(0xf86, 2, "OPL3-SA");
return ret;
}
static void __init attach_opl3sa_wss(struct address_info *hw_config)
{
int nm = num_mixers;
/* FIXME */
attach_ms_sound(hw_config, THIS_MODULE);
if (num_mixers > nm) /* A mixer was installed */
{
AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_CD);
AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH);
AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_LINE);
}
}
static int __init probe_opl3sa_mpu(struct address_info *hw_config)
{
unsigned char conf;
static signed char irq_bits[] = {
-1, -1, -1, -1, -1, 1, -1, 2, -1, 3, 4
};
if (!kilroy_was_here)
return 0; /* OPL3-SA has not been detected earlier */
if (mpu_initialized)
{
DDB(printk("OPL3-SA: MPU mode already initialized\n"));
return 0;
}
if (hw_config->irq > 10)
{
printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
return 0;
}
if (irq_bits[hw_config->irq] == -1)
{
printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
return 0;
}
switch (hw_config->io_base)
{
case 0x330:
conf = 0x00;
break;
case 0x332:
conf = 0x20;
break;
case 0x334:
conf = 0x40;
break;
case 0x300:
conf = 0x60;
break;
default:
return 0; /* Invalid port */
}
conf |= 0x83; /* MPU & OPL3 (synth) & game port enable */
conf |= irq_bits[hw_config->irq] << 2;
opl3sa_write(0x03, conf);
mpu_initialized = 1;
hw_config->name = "OPL3-SA (MPU401)";
return probe_uart401(hw_config, THIS_MODULE);
}
static void __exit unload_opl3sa_wss(struct address_info *hw_config)
{
int dma2 = hw_config->dma2;
if (dma2 == -1)
dma2 = hw_config->dma;
release_region(0xf86, 2);
release_region(hw_config->io_base, 4);
ad1848_unload(hw_config->io_base + 4,
hw_config->irq,
hw_config->dma,
dma2,
0);
sound_unload_audiodev(hw_config->slots[0]);
}
static inline void __exit unload_opl3sa_mpu(struct address_info *hw_config)
{
unload_uart401(hw_config);
}
#ifdef SB_OK
static inline void __exit unload_opl3sa_sb(struct address_info *hw_config)
{
sb_dsp_unload(hw_config);
}
#endif
static int found_mpu;
static struct address_info cfg;
static struct address_info cfg_mpu;
static int __initdata io = -1;
static int __initdata irq = -1;
static int __initdata dma = -1;
static int __initdata dma2 = -1;
static int __initdata mpu_io = -1;
static int __initdata mpu_irq = -1;
MODULE_PARM(io,"i");
MODULE_PARM(irq,"i");
MODULE_PARM(dma,"i");
MODULE_PARM(dma2,"i");
MODULE_PARM(mpu_io,"i");
MODULE_PARM(mpu_irq,"i");
static int __init init_opl3sa(void)
{
if (io == -1 || irq == -1 || dma == -1) {
printk(KERN_ERR "opl3sa: dma, irq and io must be set.\n");
return -EINVAL;
}
cfg.io_base = io;
cfg.irq = irq;
cfg.dma = dma;
cfg.dma2 = dma2;
cfg_mpu.io_base = mpu_io;
cfg_mpu.irq = mpu_irq;
if (probe_opl3sa_wss(&cfg) == 0)
return -ENODEV;
found_mpu=probe_opl3sa_mpu(&cfg_mpu);
attach_opl3sa_wss(&cfg);
return 0;
}
static void __exit cleanup_opl3sa(void)
{
if(found_mpu)
unload_opl3sa_mpu(&cfg_mpu);
unload_opl3sa_wss(&cfg);
}
module_init(init_opl3sa);
module_exit(cleanup_opl3sa);
#ifndef MODULE
static int __init setup_opl3sa(char *str)
{
/* io, irq, dma, dma2, mpu_io, mpu_irq */
int ints[7];
str = get_options(str, ARRAY_SIZE(ints), ints);
io = ints[1];
irq = ints[2];
dma = ints[3];
dma2 = ints[4];
mpu_io = ints[5];
mpu_irq = ints[6];
return 1;
}
__setup("opl3sa=", setup_opl3sa);
#endif
MODULE_LICENSE("GPL");
|