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dba8b46992
linux/sound/isa/azt2320.c
Clemens Ladisch dba8b46992 ALSA: mpu401: clean up interrupt specification 
The semantics of snd_mpu401_uart_new()'s interrupt parameters are
somewhat counterintuitive:  To prevent the function from allocating its
own interrupt, either the irq number must be invalid, or the irq_flags
parameter must be zero.  At the same time, the irq parameter being
invalid specifies that the mpu401 code has to work without an interrupt
allocated by the caller.  This implies that, if there is an interrupt
and it is allocated by the caller, the irq parameter must be set to
a valid-looking number which then isn't actually used.

With the removal of IRQF_DISABLED, zero becomes a valid irq_flags value,
which forces us to handle the parameters differently.

This patch introduces a new flag MPU401_INFO_IRQ_HOOK for when the
device interrupt is handled by the caller, and makes the allocation of
the interrupt to depend only on the irq parameter.  As suggested by
Takashi, the irq_flags parameter was dropped because, when used, it had
the constant value IRQF_DISABLED.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-09-14 11:00:51 +02:00

355 lines
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/*
card-azt2320.c - driver for Aztech Systems AZT2320 based soundcards.
Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
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
*/
/*
This driver should provide support for most Aztech AZT2320 based cards.
Several AZT2316 chips are also supported/tested, but autoprobe doesn't
work: all module option have to be set.
No docs available for us at Aztech headquarters !!! Unbelievable ...
No other help obtained.
Thanks to Rainer Wiesner <rainer.wiesner@01019freenet.de> for the WSS
activation method (full-duplex audio!).
*/
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/pnp.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/wss.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#define PFX "azt2320: "
MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
MODULE_DESCRIPTION("Aztech Systems AZT2320");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Aztech Systems,PRO16V},"
"{Aztech Systems,AZT2320},"
"{Aztech Systems,AZT3300},"
"{Aztech Systems,AZT2320},"
"{Aztech Systems,AZT3000}}");
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_ISAPNP; /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* Pnp setup */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* Pnp setup */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for azt2320 based soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for azt2320 based soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable azt2320 based soundcard.");
struct snd_card_azt2320 {
int dev_no;
struct pnp_dev *dev;
struct pnp_dev *devmpu;
struct snd_wss *chip;
};
static struct pnp_card_device_id snd_azt2320_pnpids[] = {
/* PRO16V */
{ .id = "AZT1008", .devs = { { "AZT1008" }, { "AZT2001" }, } },
/* Aztech Sound Galaxy 16 */
{ .id = "AZT2320", .devs = { { "AZT0001" }, { "AZT0002" }, } },
/* Packard Bell Sound III 336 AM/SP */
{ .id = "AZT3000", .devs = { { "AZT1003" }, { "AZT2001" }, } },
/* AT3300 */
{ .id = "AZT3002", .devs = { { "AZT1004" }, { "AZT2001" }, } },
/* --- */
{ .id = "AZT3005", .devs = { { "AZT1003" }, { "AZT2001" }, } },
/* --- */
{ .id = "AZT3011", .devs = { { "AZT1003" }, { "AZT2001" }, } },
{ .id = "" } /* end */
};
MODULE_DEVICE_TABLE(pnp_card, snd_azt2320_pnpids);
#define DRIVER_NAME "snd-card-azt2320"
static int __devinit snd_card_azt2320_pnp(int dev, struct snd_card_azt2320 *acard,
struct pnp_card_link *card,
const struct pnp_card_device_id *id)
{
struct pnp_dev *pdev;
int err;
acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
if (acard->dev == NULL)
return -ENODEV;
acard->devmpu = pnp_request_card_device(card, id->devs[1].id, NULL);
pdev = acard->dev;
err = pnp_activate_dev(pdev);
if (err < 0) {
snd_printk(KERN_ERR PFX "AUDIO pnp configure failure\n");
return err;
}
port[dev] = pnp_port_start(pdev, 0);
fm_port[dev] = pnp_port_start(pdev, 1);
wss_port[dev] = pnp_port_start(pdev, 2);
dma1[dev] = pnp_dma(pdev, 0);
dma2[dev] = pnp_dma(pdev, 1);
irq[dev] = pnp_irq(pdev, 0);
pdev = acard->devmpu;
if (pdev != NULL) {
err = pnp_activate_dev(pdev);
if (err < 0)
goto __mpu_error;
mpu_port[dev] = pnp_port_start(pdev, 0);
mpu_irq[dev] = pnp_irq(pdev, 0);
} else {
__mpu_error:
if (pdev) {
pnp_release_card_device(pdev);
snd_printk(KERN_ERR PFX "MPU401 pnp configure failure, skipping\n");
}
acard->devmpu = NULL;
mpu_port[dev] = -1;
}
return 0;
}
/* same of snd_sbdsp_command by Jaroslav Kysela */
static int __devinit snd_card_azt2320_command(unsigned long port, unsigned char val)
{
int i;
unsigned long limit;
limit = jiffies + HZ / 10;
for (i = 50000; i && time_after(limit, jiffies); i--)
if (!(inb(port + 0x0c) & 0x80)) {
outb(val, port + 0x0c);
return 0;
}
return -EBUSY;
}
static int __devinit snd_card_azt2320_enable_wss(unsigned long port)
{
int error;
if ((error = snd_card_azt2320_command(port, 0x09)))
return error;
if ((error = snd_card_azt2320_command(port, 0x00)))
return error;
mdelay(5);
return 0;
}
static int __devinit snd_card_azt2320_probe(int dev,
struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
int error;
struct snd_card *card;
struct snd_card_azt2320 *acard;
struct snd_wss *chip;
struct snd_opl3 *opl3;
error = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_card_azt2320), &card);
if (error < 0)
return error;
acard = card->private_data;
if ((error = snd_card_azt2320_pnp(dev, acard, pcard, pid))) {
snd_card_free(card);
return error;
}
snd_card_set_dev(card, &pcard->card->dev);
if ((error = snd_card_azt2320_enable_wss(port[dev]))) {
snd_card_free(card);
return error;
}
error = snd_wss_create(card, wss_port[dev], -1,
irq[dev],
dma1[dev], dma2[dev],
WSS_HW_DETECT, 0, &chip);
if (error < 0) {
snd_card_free(card);
return error;
}
strcpy(card->driver, "AZT2320");
strcpy(card->shortname, "Aztech AZT2320");
sprintf(card->longname, "%s, WSS at 0x%lx, irq %i, dma %i&%i",
card->shortname, chip->port, irq[dev], dma1[dev], dma2[dev]);
error = snd_wss_pcm(chip, 0, NULL);
if (error < 0) {
snd_card_free(card);
return error;
}
error = snd_wss_mixer(chip);
if (error < 0) {
snd_card_free(card);
return error;
}
error = snd_wss_timer(chip, 0, NULL);
if (error < 0) {
snd_card_free(card);
return error;
}
if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
if (snd_mpu401_uart_new(card, 0, MPU401_HW_AZT2320,
mpu_port[dev], 0,
mpu_irq[dev], NULL) < 0)
snd_printk(KERN_ERR PFX "no MPU-401 device at 0x%lx\n", mpu_port[dev]);
}
if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
if (snd_opl3_create(card,
fm_port[dev], fm_port[dev] + 2,
OPL3_HW_AUTO, 0, &opl3) < 0) {
snd_printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx\n",
fm_port[dev], fm_port[dev] + 2);
} else {
if ((error = snd_opl3_timer_new(opl3, 1, 2)) < 0) {
snd_card_free(card);
return error;
}
if ((error = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
snd_card_free(card);
return error;
}
}
}
if ((error = snd_card_register(card)) < 0) {
snd_card_free(card);
return error;
}
pnp_set_card_drvdata(pcard, card);
return 0;
}
static unsigned int __devinitdata azt2320_devices;
static int __devinit snd_azt2320_pnp_detect(struct pnp_card_link *card,
const struct pnp_card_device_id *id)
{
static int dev;
int res;
for ( ; dev < SNDRV_CARDS; dev++) {
if (!enable[dev])
continue;
res = snd_card_azt2320_probe(dev, card, id);
if (res < 0)
return res;
dev++;
azt2320_devices++;
return 0;
}
return -ENODEV;
}
static void __devexit snd_azt2320_pnp_remove(struct pnp_card_link * pcard)
{
snd_card_free(pnp_get_card_drvdata(pcard));
pnp_set_card_drvdata(pcard, NULL);
}
#ifdef CONFIG_PM
static int snd_azt2320_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
struct snd_card *card = pnp_get_card_drvdata(pcard);
struct snd_card_azt2320 *acard = card->private_data;
struct snd_wss *chip = acard->chip;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
chip->suspend(chip);
return 0;
}
static int snd_azt2320_pnp_resume(struct pnp_card_link *pcard)
{
struct snd_card *card = pnp_get_card_drvdata(pcard);
struct snd_card_azt2320 *acard = card->private_data;
struct snd_wss *chip = acard->chip;
chip->resume(chip);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif
static struct pnp_card_driver azt2320_pnpc_driver = {
.flags = PNP_DRIVER_RES_DISABLE,
.name = "azt2320",
.id_table = snd_azt2320_pnpids,
.probe = snd_azt2320_pnp_detect,
.remove = __devexit_p(snd_azt2320_pnp_remove),
#ifdef CONFIG_PM
.suspend = snd_azt2320_pnp_suspend,
.resume = snd_azt2320_pnp_resume,
#endif
};
static int __init alsa_card_azt2320_init(void)
{
int err;
err = pnp_register_card_driver(&azt2320_pnpc_driver);
if (err)
return err;
if (!azt2320_devices) {
pnp_unregister_card_driver(&azt2320_pnpc_driver);
#ifdef MODULE
snd_printk(KERN_ERR "no AZT2320 based soundcards found\n");
#endif
return -ENODEV;
}
return 0;
}
static void __exit alsa_card_azt2320_exit(void)
{
pnp_unregister_card_driver(&azt2320_pnpc_driver);
}
module_init(alsa_card_azt2320_init)
module_exit(alsa_card_azt2320_exit)
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