1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
559 lines
14 KiB
C
559 lines
14 KiB
C
/*
|
|
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
|
|
* Hannu Savolainen 1993-1996,
|
|
* Rob Hooft
|
|
*
|
|
* Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)
|
|
*
|
|
* Most if code is ported from OSS/Lite.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <sound/opl3.h>
|
|
#include <asm/io.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/ioport.h>
|
|
#include <sound/minors.h>
|
|
|
|
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Hannu Savolainen 1993-1996, Rob Hooft");
|
|
MODULE_DESCRIPTION("Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];
|
|
|
|
static void snd_opl2_command(opl3_t * opl3, unsigned short cmd, unsigned char val)
|
|
{
|
|
unsigned long flags;
|
|
unsigned long port;
|
|
|
|
/*
|
|
* The original 2-OP synth requires a quite long delay
|
|
* after writing to a register.
|
|
*/
|
|
|
|
port = (cmd & OPL3_RIGHT) ? opl3->r_port : opl3->l_port;
|
|
|
|
spin_lock_irqsave(&opl3->reg_lock, flags);
|
|
|
|
outb((unsigned char) cmd, port);
|
|
udelay(10);
|
|
|
|
outb((unsigned char) val, port + 1);
|
|
udelay(30);
|
|
|
|
spin_unlock_irqrestore(&opl3->reg_lock, flags);
|
|
}
|
|
|
|
static void snd_opl3_command(opl3_t * opl3, unsigned short cmd, unsigned char val)
|
|
{
|
|
unsigned long flags;
|
|
unsigned long port;
|
|
|
|
/*
|
|
* The OPL-3 survives with just two INBs
|
|
* after writing to a register.
|
|
*/
|
|
|
|
port = (cmd & OPL3_RIGHT) ? opl3->r_port : opl3->l_port;
|
|
|
|
spin_lock_irqsave(&opl3->reg_lock, flags);
|
|
|
|
outb((unsigned char) cmd, port);
|
|
inb(opl3->l_port);
|
|
inb(opl3->l_port);
|
|
|
|
outb((unsigned char) val, port + 1);
|
|
inb(opl3->l_port);
|
|
inb(opl3->l_port);
|
|
|
|
spin_unlock_irqrestore(&opl3->reg_lock, flags);
|
|
}
|
|
|
|
static int snd_opl3_detect(opl3_t * opl3)
|
|
{
|
|
/*
|
|
* This function returns 1 if the FM chip is present at the given I/O port
|
|
* The detection algorithm plays with the timer built in the FM chip and
|
|
* looks for a change in the status register.
|
|
*
|
|
* Note! The timers of the FM chip are not connected to AdLib (and compatible)
|
|
* boards.
|
|
*
|
|
* Note2! The chip is initialized if detected.
|
|
*/
|
|
|
|
unsigned char stat1, stat2, signature;
|
|
|
|
/* Reset timers 1 and 2 */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_TIMER1_MASK | OPL3_TIMER2_MASK);
|
|
/* Reset the IRQ of the FM chip */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_IRQ_RESET);
|
|
signature = stat1 = inb(opl3->l_port); /* Status register */
|
|
if ((stat1 & 0xe0) != 0x00) { /* Should be 0x00 */
|
|
snd_printd("OPL3: stat1 = 0x%x\n", stat1);
|
|
return -ENODEV;
|
|
}
|
|
/* Set timer1 to 0xff */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER1, 0xff);
|
|
/* Unmask and start timer 1 */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_TIMER2_MASK | OPL3_TIMER1_START);
|
|
/* Now we have to delay at least 80us */
|
|
udelay(200);
|
|
/* Read status after timers have expired */
|
|
stat2 = inb(opl3->l_port);
|
|
/* Stop the timers */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_TIMER1_MASK | OPL3_TIMER2_MASK);
|
|
/* Reset the IRQ of the FM chip */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_IRQ_RESET);
|
|
if ((stat2 & 0xe0) != 0xc0) { /* There is no YM3812 */
|
|
snd_printd("OPL3: stat2 = 0x%x\n", stat2);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* If the toplevel code knows exactly the type of chip, don't try
|
|
to detect it. */
|
|
if (opl3->hardware != OPL3_HW_AUTO)
|
|
return 0;
|
|
|
|
/* There is a FM chip on this address. Detect the type (OPL2 to OPL4) */
|
|
if (signature == 0x06) { /* OPL2 */
|
|
opl3->hardware = OPL3_HW_OPL2;
|
|
} else {
|
|
/*
|
|
* If we had an OPL4 chip, opl3->hardware would have been set
|
|
* by the OPL4 driver; so we can assume OPL3 here.
|
|
*/
|
|
snd_assert(opl3->r_port != 0, return -ENODEV);
|
|
opl3->hardware = OPL3_HW_OPL3;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* AdLib timers
|
|
*/
|
|
|
|
/*
|
|
* Timer 1 - 80us
|
|
*/
|
|
|
|
static int snd_opl3_timer1_start(snd_timer_t * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
unsigned int ticks;
|
|
opl3_t *opl3;
|
|
|
|
opl3 = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&opl3->timer_lock, flags);
|
|
ticks = timer->sticks;
|
|
tmp = (opl3->timer_enable | OPL3_TIMER1_START) & ~OPL3_TIMER1_MASK;
|
|
opl3->timer_enable = tmp;
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER1, 256 - ticks); /* timer 1 count */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp); /* enable timer 1 IRQ */
|
|
spin_unlock_irqrestore(&opl3->timer_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_opl3_timer1_stop(snd_timer_t * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
opl3_t *opl3;
|
|
|
|
opl3 = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&opl3->timer_lock, flags);
|
|
tmp = (opl3->timer_enable | OPL3_TIMER1_MASK) & ~OPL3_TIMER1_START;
|
|
opl3->timer_enable = tmp;
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp); /* disable timer #1 */
|
|
spin_unlock_irqrestore(&opl3->timer_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Timer 2 - 320us
|
|
*/
|
|
|
|
static int snd_opl3_timer2_start(snd_timer_t * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
unsigned int ticks;
|
|
opl3_t *opl3;
|
|
|
|
opl3 = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&opl3->timer_lock, flags);
|
|
ticks = timer->sticks;
|
|
tmp = (opl3->timer_enable | OPL3_TIMER2_START) & ~OPL3_TIMER2_MASK;
|
|
opl3->timer_enable = tmp;
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER2, 256 - ticks); /* timer 1 count */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp); /* enable timer 1 IRQ */
|
|
spin_unlock_irqrestore(&opl3->timer_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_opl3_timer2_stop(snd_timer_t * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
opl3_t *opl3;
|
|
|
|
opl3 = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&opl3->timer_lock, flags);
|
|
tmp = (opl3->timer_enable | OPL3_TIMER2_MASK) & ~OPL3_TIMER2_START;
|
|
opl3->timer_enable = tmp;
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp); /* disable timer #1 */
|
|
spin_unlock_irqrestore(&opl3->timer_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
static struct _snd_timer_hardware snd_opl3_timer1 =
|
|
{
|
|
.flags = SNDRV_TIMER_HW_STOP,
|
|
.resolution = 80000,
|
|
.ticks = 256,
|
|
.start = snd_opl3_timer1_start,
|
|
.stop = snd_opl3_timer1_stop,
|
|
};
|
|
|
|
static struct _snd_timer_hardware snd_opl3_timer2 =
|
|
{
|
|
.flags = SNDRV_TIMER_HW_STOP,
|
|
.resolution = 320000,
|
|
.ticks = 256,
|
|
.start = snd_opl3_timer2_start,
|
|
.stop = snd_opl3_timer2_stop,
|
|
};
|
|
|
|
static int snd_opl3_timer1_init(opl3_t * opl3, int timer_no)
|
|
{
|
|
snd_timer_t *timer = NULL;
|
|
snd_timer_id_t tid;
|
|
int err;
|
|
|
|
tid.dev_class = SNDRV_TIMER_CLASS_CARD;
|
|
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
|
|
tid.card = opl3->card->number;
|
|
tid.device = timer_no;
|
|
tid.subdevice = 0;
|
|
if ((err = snd_timer_new(opl3->card, "AdLib timer #1", &tid, &timer)) >= 0) {
|
|
strcpy(timer->name, "AdLib timer #1");
|
|
timer->private_data = opl3;
|
|
timer->hw = snd_opl3_timer1;
|
|
}
|
|
opl3->timer1 = timer;
|
|
return err;
|
|
}
|
|
|
|
static int snd_opl3_timer2_init(opl3_t * opl3, int timer_no)
|
|
{
|
|
snd_timer_t *timer = NULL;
|
|
snd_timer_id_t tid;
|
|
int err;
|
|
|
|
tid.dev_class = SNDRV_TIMER_CLASS_CARD;
|
|
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
|
|
tid.card = opl3->card->number;
|
|
tid.device = timer_no;
|
|
tid.subdevice = 0;
|
|
if ((err = snd_timer_new(opl3->card, "AdLib timer #2", &tid, &timer)) >= 0) {
|
|
strcpy(timer->name, "AdLib timer #2");
|
|
timer->private_data = opl3;
|
|
timer->hw = snd_opl3_timer2;
|
|
}
|
|
opl3->timer2 = timer;
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
void snd_opl3_interrupt(snd_hwdep_t * hw)
|
|
{
|
|
unsigned char status;
|
|
opl3_t *opl3;
|
|
snd_timer_t *timer;
|
|
|
|
if (hw == NULL)
|
|
return;
|
|
|
|
opl3 = hw->private_data;
|
|
status = inb(opl3->l_port);
|
|
#if 0
|
|
snd_printk("AdLib IRQ status = 0x%x\n", status);
|
|
#endif
|
|
if (!(status & 0x80))
|
|
return;
|
|
|
|
if (status & 0x40) {
|
|
timer = opl3->timer1;
|
|
snd_timer_interrupt(timer, timer->sticks);
|
|
}
|
|
if (status & 0x20) {
|
|
timer = opl3->timer2;
|
|
snd_timer_interrupt(timer, timer->sticks);
|
|
}
|
|
}
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
static int snd_opl3_free(opl3_t *opl3)
|
|
{
|
|
snd_assert(opl3 != NULL, return -ENXIO);
|
|
if (opl3->private_free)
|
|
opl3->private_free(opl3);
|
|
if (opl3->res_l_port) {
|
|
release_resource(opl3->res_l_port);
|
|
kfree_nocheck(opl3->res_l_port);
|
|
}
|
|
if (opl3->res_r_port) {
|
|
release_resource(opl3->res_r_port);
|
|
kfree_nocheck(opl3->res_r_port);
|
|
}
|
|
kfree(opl3);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_opl3_dev_free(snd_device_t *device)
|
|
{
|
|
opl3_t *opl3 = device->device_data;
|
|
return snd_opl3_free(opl3);
|
|
}
|
|
|
|
int snd_opl3_new(snd_card_t *card,
|
|
unsigned short hardware,
|
|
opl3_t **ropl3)
|
|
{
|
|
static snd_device_ops_t ops = {
|
|
.dev_free = snd_opl3_dev_free,
|
|
};
|
|
opl3_t *opl3;
|
|
int err;
|
|
|
|
*ropl3 = NULL;
|
|
opl3 = kcalloc(1, sizeof(*opl3), GFP_KERNEL);
|
|
if (opl3 == NULL)
|
|
return -ENOMEM;
|
|
|
|
opl3->card = card;
|
|
opl3->hardware = hardware;
|
|
spin_lock_init(&opl3->reg_lock);
|
|
spin_lock_init(&opl3->timer_lock);
|
|
init_MUTEX(&opl3->access_mutex);
|
|
|
|
if ((err = snd_device_new(card, SNDRV_DEV_CODEC, opl3, &ops)) < 0) {
|
|
snd_opl3_free(opl3);
|
|
return err;
|
|
}
|
|
|
|
*ropl3 = opl3;
|
|
return 0;
|
|
}
|
|
|
|
int snd_opl3_init(opl3_t *opl3)
|
|
{
|
|
if (! opl3->command) {
|
|
printk(KERN_ERR "snd_opl3_init: command not defined!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_TEST, OPL3_ENABLE_WAVE_SELECT);
|
|
/* Melodic mode */
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, 0x00);
|
|
|
|
switch (opl3->hardware & OPL3_HW_MASK) {
|
|
case OPL3_HW_OPL2:
|
|
opl3->max_voices = MAX_OPL2_VOICES;
|
|
break;
|
|
case OPL3_HW_OPL3:
|
|
case OPL3_HW_OPL4:
|
|
opl3->max_voices = MAX_OPL3_VOICES;
|
|
/* Enter OPL3 mode */
|
|
opl3->command(opl3, OPL3_RIGHT | OPL3_REG_MODE, OPL3_OPL3_ENABLE);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int snd_opl3_create(snd_card_t * card,
|
|
unsigned long l_port,
|
|
unsigned long r_port,
|
|
unsigned short hardware,
|
|
int integrated,
|
|
opl3_t ** ropl3)
|
|
{
|
|
opl3_t *opl3;
|
|
int err;
|
|
|
|
*ropl3 = NULL;
|
|
if ((err = snd_opl3_new(card, hardware, &opl3)) < 0)
|
|
return err;
|
|
if (! integrated) {
|
|
if ((opl3->res_l_port = request_region(l_port, 2, "OPL2/3 (left)")) == NULL) {
|
|
snd_printk(KERN_ERR "opl3: can't grab left port 0x%lx\n", l_port);
|
|
snd_opl3_free(opl3);
|
|
return -EBUSY;
|
|
}
|
|
if (r_port != 0 &&
|
|
(opl3->res_r_port = request_region(r_port, 2, "OPL2/3 (right)")) == NULL) {
|
|
snd_printk(KERN_ERR "opl3: can't grab right port 0x%lx\n", r_port);
|
|
snd_opl3_free(opl3);
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
opl3->l_port = l_port;
|
|
opl3->r_port = r_port;
|
|
|
|
switch (opl3->hardware) {
|
|
/* some hardware doesn't support timers */
|
|
case OPL3_HW_OPL3_SV:
|
|
case OPL3_HW_OPL3_CS:
|
|
case OPL3_HW_OPL3_FM801:
|
|
opl3->command = &snd_opl3_command;
|
|
break;
|
|
default:
|
|
opl3->command = &snd_opl2_command;
|
|
if ((err = snd_opl3_detect(opl3)) < 0) {
|
|
snd_printd("OPL2/3 chip not detected at 0x%lx/0x%lx\n",
|
|
opl3->l_port, opl3->r_port);
|
|
snd_opl3_free(opl3);
|
|
return err;
|
|
}
|
|
/* detect routine returns correct hardware type */
|
|
switch (opl3->hardware & OPL3_HW_MASK) {
|
|
case OPL3_HW_OPL3:
|
|
case OPL3_HW_OPL4:
|
|
opl3->command = &snd_opl3_command;
|
|
}
|
|
}
|
|
|
|
snd_opl3_init(opl3);
|
|
|
|
*ropl3 = opl3;
|
|
return 0;
|
|
}
|
|
|
|
int snd_opl3_timer_new(opl3_t * opl3, int timer1_dev, int timer2_dev)
|
|
{
|
|
int err;
|
|
|
|
if (timer1_dev >= 0)
|
|
if ((err = snd_opl3_timer1_init(opl3, timer1_dev)) < 0)
|
|
return err;
|
|
if (timer2_dev >= 0) {
|
|
if ((err = snd_opl3_timer2_init(opl3, timer2_dev)) < 0) {
|
|
snd_device_free(opl3->card, opl3->timer1);
|
|
opl3->timer1 = NULL;
|
|
return err;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int snd_opl3_hwdep_new(opl3_t * opl3,
|
|
int device, int seq_device,
|
|
snd_hwdep_t ** rhwdep)
|
|
{
|
|
snd_hwdep_t *hw;
|
|
snd_card_t *card = opl3->card;
|
|
int err;
|
|
|
|
if (rhwdep)
|
|
*rhwdep = NULL;
|
|
|
|
/* create hardware dependent device (direct FM) */
|
|
|
|
if ((err = snd_hwdep_new(card, "OPL2/OPL3", device, &hw)) < 0) {
|
|
snd_device_free(card, opl3);
|
|
return err;
|
|
}
|
|
hw->private_data = opl3;
|
|
#ifdef CONFIG_SND_OSSEMUL
|
|
if (device == 0) {
|
|
hw->oss_type = SNDRV_OSS_DEVICE_TYPE_DMFM;
|
|
sprintf(hw->oss_dev, "dmfm%i", card->number);
|
|
}
|
|
#endif
|
|
strcpy(hw->name, hw->id);
|
|
switch (opl3->hardware & OPL3_HW_MASK) {
|
|
case OPL3_HW_OPL2:
|
|
strcpy(hw->name, "OPL2 FM");
|
|
hw->iface = SNDRV_HWDEP_IFACE_OPL2;
|
|
break;
|
|
case OPL3_HW_OPL3:
|
|
strcpy(hw->name, "OPL3 FM");
|
|
hw->iface = SNDRV_HWDEP_IFACE_OPL3;
|
|
break;
|
|
case OPL3_HW_OPL4:
|
|
strcpy(hw->name, "OPL4 FM");
|
|
hw->iface = SNDRV_HWDEP_IFACE_OPL4;
|
|
break;
|
|
}
|
|
|
|
/* operators - only ioctl */
|
|
hw->ops.open = snd_opl3_open;
|
|
hw->ops.ioctl = snd_opl3_ioctl;
|
|
hw->ops.release = snd_opl3_release;
|
|
|
|
opl3->seq_dev_num = seq_device;
|
|
#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
|
|
if (snd_seq_device_new(card, seq_device, SNDRV_SEQ_DEV_ID_OPL3,
|
|
sizeof(opl3_t*), &opl3->seq_dev) >= 0) {
|
|
strcpy(opl3->seq_dev->name, hw->name);
|
|
*(opl3_t**)SNDRV_SEQ_DEVICE_ARGPTR(opl3->seq_dev) = opl3;
|
|
}
|
|
#endif
|
|
if (rhwdep)
|
|
*rhwdep = hw;
|
|
return 0;
|
|
}
|
|
|
|
EXPORT_SYMBOL(snd_opl3_interrupt);
|
|
EXPORT_SYMBOL(snd_opl3_new);
|
|
EXPORT_SYMBOL(snd_opl3_init);
|
|
EXPORT_SYMBOL(snd_opl3_create);
|
|
EXPORT_SYMBOL(snd_opl3_timer_new);
|
|
EXPORT_SYMBOL(snd_opl3_hwdep_new);
|
|
|
|
/* opl3_synth.c */
|
|
EXPORT_SYMBOL(snd_opl3_regmap);
|
|
EXPORT_SYMBOL(snd_opl3_reset);
|
|
|
|
/*
|
|
* INIT part
|
|
*/
|
|
|
|
static int __init alsa_opl3_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void __exit alsa_opl3_exit(void)
|
|
{
|
|
}
|
|
|
|
module_init(alsa_opl3_init)
|
|
module_exit(alsa_opl3_exit)
|