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remarkable-linux/sound/isa/als100.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

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/*
card-als100.c - driver for Avance Logic ALS100 based soundcards.
Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
Copyright (C) 1999-2002 by Massimo Piccioni <dafastidio@libero.it>
Thanks to Pierfrancesco 'qM2' Passerini.
Generalised for soundcards based on DT-0196 and ALS-007 chips
by Jonathan Woithe <jwoithe@physics.adelaide.edu.au>: June 2002.
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/wait.h>
#include <linux/time.h>
#include <linux/pnp.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/sb.h>
#define PFX "als100: "
MODULE_DESCRIPTION("Avance Logic ALS007/ALS1X0");
MODULE_SUPPORTED_DEVICE("{{Diamond Technologies DT-019X},"
"{Avance Logic ALS-007}}"
"{{Avance Logic,ALS100 - PRO16PNP},"
"{Avance Logic,ALS110},"
"{Avance Logic,ALS120},"
"{Avance Logic,ALS200},"
"{3D Melody,MF1000},"
"{Digimate,3D Sound},"
"{Avance Logic,ALS120},"
"{RTL,RTL3000}}");
MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
MODULE_LICENSE("GPL");
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; /* 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 dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
static int dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Avance Logic based soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Avance Logic based soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Avance Logic based soundcard.");
MODULE_ALIAS("snd-dt019x");
struct snd_card_als100 {
struct pnp_dev *dev;
struct pnp_dev *devmpu;
struct pnp_dev *devopl;
struct snd_sb *chip;
};
static struct pnp_card_device_id snd_als100_pnpids[] = {
/* DT197A30 */
{ .id = "RWB1688",
.devs = { { "@@@0001" }, { "@X@0001" }, { "@H@0001" } },
.driver_data = SB_HW_DT019X },
/* DT0196 / ALS-007 */
{ .id = "ALS0007",
.devs = { { "@@@0001" }, { "@X@0001" }, { "@H@0001" } },
.driver_data = SB_HW_DT019X },
/* ALS100 - PRO16PNP */
{ .id = "ALS0001",
.devs = { { "@@@0001" }, { "@X@0001" }, { "@H@0001" } },
.driver_data = SB_HW_ALS100 },
/* ALS110 - MF1000 - Digimate 3D Sound */
{ .id = "ALS0110",
.devs = { { "@@@1001" }, { "@X@1001" }, { "@H@1001" } },
.driver_data = SB_HW_ALS100 },
/* ALS120 */
{ .id = "ALS0120",
.devs = { { "@@@2001" }, { "@X@2001" }, { "@H@2001" } },
.driver_data = SB_HW_ALS100 },
/* ALS200 */
{ .id = "ALS0200",
.devs = { { "@@@0020" }, { "@X@0020" }, { "@H@0001" } },
.driver_data = SB_HW_ALS100 },
/* ALS200 OEM */
{ .id = "ALS0200",
.devs = { { "@@@0020" }, { "@X@0020" }, { "@H@0020" } },
.driver_data = SB_HW_ALS100 },
/* RTL3000 */
{ .id = "RTL3000",
.devs = { { "@@@2001" }, { "@X@2001" }, { "@H@2001" } },
.driver_data = SB_HW_ALS100 },
{ .id = "" } /* end */
};
MODULE_DEVICE_TABLE(pnp_card, snd_als100_pnpids);
static int __devinit snd_card_als100_pnp(int dev, struct snd_card_als100 *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, acard->dev);
acard->devopl = pnp_request_card_device(card, id->devs[2].id, acard->dev);
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);
if (id->driver_data == SB_HW_DT019X)
dma8[dev] = pnp_dma(pdev, 0);
else {
dma8[dev] = pnp_dma(pdev, 1);
dma16[dev] = pnp_dma(pdev, 0);
}
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;
}
pdev = acard->devopl;
if (pdev != NULL) {
err = pnp_activate_dev(pdev);
if (err < 0)
goto __fm_error;
fm_port[dev] = pnp_port_start(pdev, 0);
} else {
__fm_error:
if (pdev) {
pnp_release_card_device(pdev);
snd_printk(KERN_ERR PFX "OPL3 pnp configure failure, skipping\n");
}
acard->devopl = NULL;
fm_port[dev] = -1;
}
return 0;
}
static int __devinit snd_card_als100_probe(int dev,
struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
int error;
struct snd_sb *chip;
struct snd_card *card;
struct snd_card_als100 *acard;
struct snd_opl3 *opl3;
error = snd_card_create(index[dev], id[dev], THIS_MODULE,
sizeof(struct snd_card_als100), &card);
if (error < 0)
return error;
acard = card->private_data;
if ((error = snd_card_als100_pnp(dev, acard, pcard, pid))) {
snd_card_free(card);
return error;
}
snd_card_set_dev(card, &pcard->card->dev);
if (pid->driver_data == SB_HW_DT019X)
dma16[dev] = -1;
error = snd_sbdsp_create(card, port[dev], irq[dev],
snd_sb16dsp_interrupt,
dma8[dev], dma16[dev],
pid->driver_data,
&chip);
if (error < 0) {
snd_card_free(card);
return error;
}
acard->chip = chip;
if (pid->driver_data == SB_HW_DT019X) {
strcpy(card->driver, "DT-019X");
strcpy(card->shortname, "Diamond Tech. DT-019X");
sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d",
card->shortname, chip->name, chip->port,
irq[dev], dma8[dev]);
} else {
strcpy(card->driver, "ALS100");
strcpy(card->shortname, "Avance Logic ALS100");
sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d&%d",
card->shortname, chip->name, chip->port,
irq[dev], dma8[dev], dma16[dev]);
}
if ((error = snd_sb16dsp_pcm(chip, 0, NULL)) < 0) {
snd_card_free(card);
return error;
}
if ((error = snd_sbmixer_new(chip)) < 0) {
snd_card_free(card);
return error;
}
if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
int mpu_type = MPU401_HW_ALS100;
if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
mpu_irq[dev] = -1;
if (pid->driver_data == SB_HW_DT019X)
mpu_type = MPU401_HW_MPU401;
if (snd_mpu401_uart_new(card, 0,
mpu_type,
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, 0, 1)) < 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 als100_devices;
static int __devinit snd_als100_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_als100_probe(dev, card, id);
if (res < 0)
return res;
dev++;
als100_devices++;
return 0;
}
return -ENODEV;
}
static void __devexit snd_als100_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_als100_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
struct snd_card *card = pnp_get_card_drvdata(pcard);
struct snd_card_als100 *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_als100_pnp_resume(struct pnp_card_link *pcard)
{
struct snd_card *card = pnp_get_card_drvdata(pcard);
struct snd_card_als100 *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
static struct pnp_card_driver als100_pnpc_driver = {
.flags = PNP_DRIVER_RES_DISABLE,
.name = "als100",
.id_table = snd_als100_pnpids,
.probe = snd_als100_pnp_detect,
.remove = __devexit_p(snd_als100_pnp_remove),
#ifdef CONFIG_PM
.suspend = snd_als100_pnp_suspend,
.resume = snd_als100_pnp_resume,
#endif
};
static int __init alsa_card_als100_init(void)
{
int err;
err = pnp_register_card_driver(&als100_pnpc_driver);
if (err)
return err;
if (!als100_devices) {
pnp_unregister_card_driver(&als100_pnpc_driver);
#ifdef MODULE
snd_printk(KERN_ERR "no Avance Logic based soundcards found\n");
#endif
return -ENODEV;
}
return 0;
}
static void __exit alsa_card_als100_exit(void)
{
pnp_unregister_card_driver(&als100_pnpc_driver);
}
module_init(alsa_card_als100_init)
module_exit(alsa_card_als100_exit)
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