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linux-stable-rt/sound/isa/sb/sb8.c

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/*
* Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
*
*
* 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/driver.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/opl3.h>
#define SNDRV_LEGACY_AUTO_PROBE
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240,0x260 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3 */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for SB8 driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
module_param_array(dma8, int, NULL, 0444);
MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
struct snd_sb8 {
struct resource *fm_res; /* used to block FM i/o region for legacy cards */
};
static snd_card_t *snd_sb8_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
sb_t *chip = dev_id;
if (chip->open & SB_OPEN_PCM) {
return snd_sb8dsp_interrupt(chip);
} else {
return snd_sb8dsp_midi_interrupt(chip);
}
}
static void snd_sb8_free(snd_card_t *card)
{
struct snd_sb8 *acard = (struct snd_sb8 *)card->private_data;
if (acard == NULL)
return;
if (acard->fm_res) {
release_resource(acard->fm_res);
kfree_nocheck(acard->fm_res);
}
}
static int __init snd_sb8_probe(int dev)
{
sb_t *chip;
snd_card_t *card;
struct snd_sb8 *acard;
opl3_t *opl3;
int err;
card = snd_card_new(index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_sb8));
if (card == NULL)
return -ENOMEM;
acard = (struct snd_sb8 *)card->private_data;
card->private_free = snd_sb8_free;
/* block the 0x388 port to avoid PnP conflicts */
acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
snd_sb8_interrupt,
dma8[dev],
-1,
SB_HW_AUTO,
&chip)) < 0) {
snd_card_free(card);
return err;
}
if (chip->hardware >= SB_HW_16) {
snd_card_free(card);
if (chip->hardware == SB_HW_ALS100)
snd_printdd("ALS100 chip detected at 0x%lx, try snd-als100 module\n",
port[dev]);
else
snd_printdd("SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
port[dev]);
return -ENODEV;
}
if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_sbmixer_new(chip)) < 0) {
snd_card_free(card);
return err;
}
if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
if ((err = snd_opl3_create(card, chip->port + 8, 0,
OPL3_HW_AUTO, 1,
&opl3)) < 0) {
snd_printk(KERN_ERR "sb8: no OPL device at 0x%lx\n", chip->port + 8);
}
} else {
if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
OPL3_HW_AUTO, 1,
&opl3)) < 0) {
snd_printk(KERN_ERR "sb8: no OPL device at 0x%lx-0x%lx\n",
chip->port, chip->port + 2);
}
}
if (err >= 0) {
if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
snd_card_free(card);
return err;
}
}
if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0) {
snd_card_free(card);
return err;
}
strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
strcpy(card->shortname, chip->name);
sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
chip->name,
chip->port,
irq[dev], dma8[dev]);
if ((err = snd_card_register(card)) < 0) {
snd_card_free(card);
return err;
}
snd_sb8_cards[dev] = card;
return 0;
}
static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport)
{
static int dev;
int res;
for ( ; dev < SNDRV_CARDS; dev++) {
if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
continue;
port[dev] = xport;
res = snd_sb8_probe(dev);
if (res < 0)
port[dev] = SNDRV_AUTO_PORT;
return res;
}
return -ENODEV;
}
static int __init alsa_card_sb8_init(void)
{
static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
int dev, cards, i;
for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
if (port[dev] == SNDRV_AUTO_PORT)
continue;
if (snd_sb8_probe(dev) >= 0)
cards++;
}
i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe);
if (i > 0)
cards += i;
if (!cards) {
#ifdef MODULE
snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
#endif
return -ENODEV;
}
return 0;
}
static void __exit alsa_card_sb8_exit(void)
{
int idx;
for (idx = 0; idx < SNDRV_CARDS; idx++)
snd_card_free(snd_sb8_cards[idx]);
}
module_init(alsa_card_sb8_init)
module_exit(alsa_card_sb8_exit)
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