- 根目录:
- sound
- isa
- sb
- sb8.c
/*
* Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
* Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/ioport.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/opl3.h>
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.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 */
struct snd_sb *chip;
};
static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)
{
struct snd_sb *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(struct snd_card *card)
{
struct snd_sb8 *acard = card->private_data;
if (acard == NULL)
return;
release_and_free_resource(acard->fm_res);
}
static int __devinit snd_sb8_match(struct device *pdev, unsigned int dev)
{
if (!enable[dev])
return 0;
if (irq[dev] == SNDRV_AUTO_IRQ) {
dev_err(pdev, "please specify irq\n");
return 0;
}
if (dma8[dev] == SNDRV_AUTO_DMA) {
dev_err(pdev, "please specify dma8\n");
return 0;
}
return 1;
}
static int __devinit snd_sb8_probe(struct device *pdev, unsigned int dev)
{
struct snd_sb *chip;
struct snd_card *card;
struct snd_sb8 *acard;
struct snd_opl3 *opl3;
int err;
err = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_sb8), &card);
if (err < 0)
return err;
acard = 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 (port[dev] != SNDRV_AUTO_PORT) {
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
snd_sb8_interrupt,
dma8[dev],
-1,
SB_HW_AUTO,
&chip)) < 0)
goto _err;
} else {
/* auto-probe legacy ports */
static unsigned long possible_ports[] = {
0x220, 0x240, 0x260,
};
int i;
for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
err = snd_sbdsp_create(card, possible_ports[i],
irq[dev],
snd_sb8_interrupt,
dma8[dev],
-1,
SB_HW_AUTO,
&chip);
if (err >= 0) {
port[dev] = possible_ports[i];
break;
}
}
if (i >= ARRAY_SIZE(possible_ports)) {
err = -EINVAL;
goto _err;
}
}
acard->chip = chip;
if (chip->hardware >= SB_HW_16) {
if (chip->hardware == SB_HW_ALS100)
snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
port[dev]);
else
snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
port[dev]);
err = -ENODEV;
goto _err;
}
if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0)
goto _err;
if ((err = snd_sbmixer_new(chip)) < 0)
goto _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_WARNING "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_WARNING "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)
goto _err;
}
if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0)
goto _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]);
snd_card_set_dev(card, pdev);
if ((err = snd_card_register(card)) < 0)
goto _err;
dev_set_drvdata(pdev, card);
return 0;
_err:
snd_card_free(card);
return err;
}
static int __devexit snd_sb8_remove(struct device *pdev, unsigned int dev)
{
snd_card_free(dev_get_drvdata(pdev));
dev_set_drvdata(pdev, NULL);
return 0;
}
#ifdef CONFIG_PM
static int snd_sb8_suspend(struct device *dev, unsigned int n,
pm_message_t state)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_sb8 *acard = card->private_data;
struct snd_sb *chip = acard->chip;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_pcm_suspend_all(chip->pcm);
snd_sbmixer_suspend(chip);
return 0;
}
static int snd_sb8_resume(struct device *dev, unsigned int n)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_sb8 *acard = card->private_data;
struct snd_sb *chip = acard->chip;
snd_sbdsp_reset(chip);
snd_sbmixer_resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
#define DEV_NAME "sb8"
static struct isa_driver snd_sb8_driver = {
.match = snd_sb8_match,
.probe = snd_sb8_probe,
.remove = __devexit_p(snd_sb8_remove),
#ifdef CONFIG_PM
.suspend = snd_sb8_suspend,
.resume = snd_sb8_resume,
#endif
.driver = {
.name = DEV_NAME
},
};
static int __init alsa_card_sb8_init(void)
{
return isa_register_driver(&snd_sb8_driver, SNDRV_CARDS);
}
static void __exit alsa_card_sb8_exit(void)
{
isa_unregister_driver(&snd_sb8_driver);
}
module_init(alsa_card_sb8_init)
module_exit(alsa_card_sb8_exit)