sound/isa/azt2320.c - kernel/msm - Gitiles

 /*
     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/module.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 bool 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)
	/*
	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/module.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 bool 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)