sound/isa/als100.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later

 /*
     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@just42.net>: June 2002.

 */

 #include <linux/init.h>
 #include <linux/wait.h>
 #include <linux/time.h>
 #include <linux/pnp.h>
 #include <linux/module.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_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 bool 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 const 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 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 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_new(&pcard->card->dev,
 			     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;
 	}

 	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");
 		snprintf(card->longname, sizeof(card->longname),
 			 "Diamond Tech. DT-019X, %s at 0x%lx, irq %d, dma %d",
 			 chip->name, chip->port, irq[dev], dma8[dev]);
 	} else {
 		strcpy(card->driver, "ALS100");
 		strcpy(card->shortname, "Avance Logic ALS100");
 		snprintf(card->longname, sizeof(card->longname),
 			 "Avance Logic ALS100, %s at 0x%lx, irq %d, dma %d&%d",
 			 chip->name, chip->port, irq[dev], dma8[dev],
 			 dma16[dev]);
 	}

 	if ((error = snd_sb16dsp_pcm(chip, 0)) < 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 als100_devices;

 static int 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 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_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		= 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)
	// SPDX-License-Identifier: GPL-2.0-or-later

	/*
	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@just42.net>: June 2002.

	*/

	#include <linux/init.h>
	#include <linux/wait.h>
	#include <linux/time.h>
	#include <linux/pnp.h>
	#include <linux/module.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_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 bool 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 const 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 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 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_new(&pcard->card->dev,
	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;
	}

	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");
	snprintf(card->longname, sizeof(card->longname),
	"Diamond Tech. DT-019X, %s at 0x%lx, irq %d, dma %d",
	chip->name, chip->port, irq[dev], dma8[dev]);
	} else {
	strcpy(card->driver, "ALS100");
	strcpy(card->shortname, "Avance Logic ALS100");
	snprintf(card->longname, sizeof(card->longname),
	"Avance Logic ALS100, %s at 0x%lx, irq %d, dma %d&%d",
	chip->name, chip->port, irq[dev], dma8[dev],
	dma16[dev]);
	}

	if ((error = snd_sb16dsp_pcm(chip, 0)) < 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 als100_devices;

	static int 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 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_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 = 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)