sound/isa/gus/gusmax.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  Driver for Gravis UltraSound MAX soundcard
  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  */

 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/isa.h>
 #include <linux/delay.h>
 #include <linux/time.h>
 #include <linux/module.h>
 #include <asm/dma.h>
 #include <sound/core.h>
 #include <sound/gus.h>
 #include <sound/wss.h>
 #define SNDRV_LEGACY_FIND_FREE_IRQ
 #define SNDRV_LEGACY_FIND_FREE_DMA
 #include <sound/initval.h>

 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 MODULE_DESCRIPTION("Gravis UltraSound MAX");
 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;	/* 0x220,0x230,0x240,0x250,0x260 */
 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 2,3,5,9,11,12,15 */
 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 1,3,5,6,7 */
 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 1,3,5,6,7 */
 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
 				/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};

 module_param_array(index, int, NULL, 0444);
 MODULE_PARM_DESC(index, "Index value for GUS MAX soundcard.");
 module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string for GUS MAX soundcard.");
 module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "Enable GUS MAX soundcard.");
 module_param_hw_array(port, long, ioport, NULL, 0444);
 MODULE_PARM_DESC(port, "Port # for GUS MAX driver.");
 module_param_hw_array(irq, int, irq, NULL, 0444);
 MODULE_PARM_DESC(irq, "IRQ # for GUS MAX driver.");
 module_param_hw_array(dma1, int, dma, NULL, 0444);
 MODULE_PARM_DESC(dma1, "DMA1 # for GUS MAX driver.");
 module_param_hw_array(dma2, int, dma, NULL, 0444);
 MODULE_PARM_DESC(dma2, "DMA2 # for GUS MAX driver.");
 module_param_array(joystick_dac, int, NULL, 0444);
 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS MAX driver.");
 module_param_array(channels, int, NULL, 0444);
 MODULE_PARM_DESC(channels, "Used GF1 channels for GUS MAX driver.");
 module_param_array(pcm_channels, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS MAX driver.");

 struct snd_gusmax {
 	int irq;
 	struct snd_card *card;
 	struct snd_gus_card *gus;
 	struct snd_wss *wss;
 	unsigned short gus_status_reg;
 	unsigned short pcm_status_reg;
 };

 static int snd_gusmax_detect(struct snd_gus_card *gus)
 {
 	unsigned char d;

 	snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);	/* reset GF1 */
 	d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
 	if ((d & 0x07) != 0) {
 		dev_dbg(gus->card->dev, "[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
 		return -ENODEV;
 	}
 	udelay(160);
 	snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);	/* release reset */
 	udelay(160);
 	d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
 	if ((d & 0x07) != 1) {
 		dev_dbg(gus->card->dev, "[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
 		return -ENODEV;
 	}

 	return 0;
 }

 static irqreturn_t snd_gusmax_interrupt(int irq, void *dev_id)
 {
 	struct snd_gusmax *maxcard = dev_id;
 	int loop, max = 5;
 	int handled = 0;

 	do {
 		loop = 0;
 		if (inb(maxcard->gus_status_reg)) {
 			handled = 1;
 			snd_gus_interrupt(irq, maxcard->gus);
 			loop++;
 		}
 		if (inb(maxcard->pcm_status_reg) & 0x01) { /* IRQ bit is set? */
 			handled = 1;
 			snd_wss_interrupt(irq, maxcard->wss);
 			loop++;
 		}
 	} while (loop && --max > 0);
 	return IRQ_RETVAL(handled);
 }

 static void snd_gusmax_init(int dev, struct snd_card *card,
 			    struct snd_gus_card *gus)
 {
 	gus->equal_irq = 1;
 	gus->codec_flag = 1;
 	gus->joystick_dac = joystick_dac[dev];
 	/* init control register */
 	gus->max_cntrl_val = (gus->gf1.port >> 4) & 0x0f;
 	if (gus->gf1.dma1 > 3)
 		gus->max_cntrl_val |= 0x10;
 	if (gus->gf1.dma2 > 3)
 		gus->max_cntrl_val |= 0x20;
 	gus->max_cntrl_val |= 0x40;
 	outb(gus->max_cntrl_val, GUSP(gus, MAXCNTRLPORT));
 }

 static int snd_gusmax_mixer(struct snd_wss *chip)
 {
 	struct snd_card *card = chip->card;
 	struct snd_ctl_elem_id id1, id2;
 	int err;

 	memset(&id1, 0, sizeof(id1));
 	memset(&id2, 0, sizeof(id2));
 	id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 	/* reassign AUXA to SYNTHESIZER */
 	strcpy(id1.name, "Aux Playback Switch");
 	strcpy(id2.name, "Synth Playback Switch");
 	err = snd_ctl_rename_id(card, &id1, &id2);
 	if (err < 0)
 		return err;
 	strcpy(id1.name, "Aux Playback Volume");
 	strcpy(id2.name, "Synth Playback Volume");
 	err = snd_ctl_rename_id(card, &id1, &id2);
 	if (err < 0)
 		return err;
 	/* reassign AUXB to CD */
 	strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
 	strcpy(id2.name, "CD Playback Switch");
 	err = snd_ctl_rename_id(card, &id1, &id2);
 	if (err < 0)
 		return err;
 	strcpy(id1.name, "Aux Playback Volume");
 	strcpy(id2.name, "CD Playback Volume");
 	err = snd_ctl_rename_id(card, &id1, &id2);
 	if (err < 0)
 		return err;
 #if 0
 	/* reassign Mono Input to MIC */
 	if (snd_mixer_group_rename(mixer,
 				SNDRV_MIXER_IN_MONO, 0,
 				SNDRV_MIXER_IN_MIC, 0) < 0)
 		goto __error;
 	if (snd_mixer_elem_rename(mixer,
 				SNDRV_MIXER_IN_MONO, 0, SNDRV_MIXER_ETYPE_INPUT,
 				SNDRV_MIXER_IN_MIC, 0) < 0)
 		goto __error;
 	if (snd_mixer_elem_rename(mixer,
 				"Mono Capture Volume", 0, SNDRV_MIXER_ETYPE_VOLUME1,
 				"Mic Capture Volume", 0) < 0)
 		goto __error;
 	if (snd_mixer_elem_rename(mixer,
 				"Mono Capture Switch", 0, SNDRV_MIXER_ETYPE_SWITCH1,
 				"Mic Capture Switch", 0) < 0)
 		goto __error;
 #endif
 	return 0;
 }

 static int snd_gusmax_match(struct device *pdev, unsigned int dev)
 {
 	return enable[dev];
 }

 static int snd_gusmax_probe(struct device *pdev, unsigned int dev)
 {
 	static const int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, -1};
 	static const int possible_dmas[] = {5, 6, 7, 1, 3, -1};
 	int xirq, xdma1, xdma2, err;
 	struct snd_card *card;
 	struct snd_gus_card *gus = NULL;
 	struct snd_wss *wss;
 	struct snd_gusmax *maxcard;

 	err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
 				sizeof(struct snd_gusmax), &card);
 	if (err < 0)
 		return err;
 	maxcard = card->private_data;
 	maxcard->card = card;
 	maxcard->irq = -1;

 	xirq = irq[dev];
 	if (xirq == SNDRV_AUTO_IRQ) {
 		xirq = snd_legacy_find_free_irq(possible_irqs);
 		if (xirq < 0) {
 			dev_err(pdev, "unable to find a free IRQ\n");
 			return -EBUSY;
 		}
 	}
 	xdma1 = dma1[dev];
 	if (xdma1 == SNDRV_AUTO_DMA) {
 		xdma1 = snd_legacy_find_free_dma(possible_dmas);
 		if (xdma1 < 0) {
 			dev_err(pdev, "unable to find a free DMA1\n");
 			return -EBUSY;
 		}
 	}
 	xdma2 = dma2[dev];
 	if (xdma2 == SNDRV_AUTO_DMA) {
 		xdma2 = snd_legacy_find_free_dma(possible_dmas);
 		if (xdma2 < 0) {
 			dev_err(pdev, "unable to find a free DMA2\n");
 			return -EBUSY;
 		}
 	}

 	if (port[dev] != SNDRV_AUTO_PORT) {
 		err = snd_gus_create(card,
 				     port[dev],
 				     -xirq, xdma1, xdma2,
 				     0, channels[dev],
 				     pcm_channels[dev],
 				     0, &gus);
 	} else {
 		static const unsigned long possible_ports[] = {
 			0x220, 0x230, 0x240, 0x250, 0x260
 		};
 		int i;
 		for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
 			err = snd_gus_create(card,
 					     possible_ports[i],
 					     -xirq, xdma1, xdma2,
 					     0, channels[dev],
 					     pcm_channels[dev],
 					     0, &gus);
 			if (err >= 0) {
 				port[dev] = possible_ports[i];
 				break;
 			}
 		}
 	}
 	if (err < 0)
 		return err;

 	err = snd_gusmax_detect(gus);
 	if (err < 0)
 		return err;

 	maxcard->gus_status_reg = gus->gf1.reg_irqstat;
 	maxcard->pcm_status_reg = gus->gf1.port + 0x10c + 2;
 	snd_gusmax_init(dev, card, gus);
 	err = snd_gus_initialize(gus);
 	if (err < 0)
 		return err;

 	if (!gus->max_flag) {
 		dev_err(pdev, "GUS MAX soundcard was not detected at 0x%lx\n", gus->gf1.port);
 		return -ENODEV;
 	}

 	if (devm_request_irq(card->dev, xirq, snd_gusmax_interrupt, 0,
 			     "GUS MAX", (void *)maxcard)) {
 		dev_err(pdev, "unable to grab IRQ %d\n", xirq);
 		return -EBUSY;
 	}
 	maxcard->irq = xirq;
 	card->sync_irq = maxcard->irq;

 	err = snd_wss_create(card,
 			     gus->gf1.port + 0x10c, -1, xirq,
 			     xdma2 < 0 ? xdma1 : xdma2, xdma1,
 			     WSS_HW_DETECT,
 			     WSS_HWSHARE_IRQ |
 			     WSS_HWSHARE_DMA1 |
 			     WSS_HWSHARE_DMA2,
 			     &wss);
 	if (err < 0)
 		return err;

 	err = snd_wss_pcm(wss, 0);
 	if (err < 0)
 		return err;

 	err = snd_wss_mixer(wss);
 	if (err < 0)
 		return err;

 	err = snd_wss_timer(wss, 2);
 	if (err < 0)
 		return err;

 	if (pcm_channels[dev] > 0) {
 		err = snd_gf1_pcm_new(gus, 1, 1);
 		if (err < 0)
 			return err;
 	}
 	err = snd_gusmax_mixer(wss);
 	if (err < 0)
 		return err;

 	err = snd_gf1_rawmidi_new(gus, 0);
 	if (err < 0)
 		return err;

 	sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %i, dma %i", gus->gf1.port, xirq, xdma1);
 	if (xdma2 >= 0)
 		sprintf(card->longname + strlen(card->longname), "&%i", xdma2);

 	err = snd_card_register(card);
 	if (err < 0)
 		return err;

 	maxcard->gus = gus;
 	maxcard->wss = wss;

 	dev_set_drvdata(pdev, card);
 	return 0;
 }

 #define DEV_NAME "gusmax"

 static struct isa_driver snd_gusmax_driver = {
 	.match		= snd_gusmax_match,
 	.probe		= snd_gusmax_probe,
 	/* FIXME: suspend/resume */
 	.driver		= {
 		.name	= DEV_NAME
 	},
 };

 module_isa_driver(snd_gusmax_driver, SNDRV_CARDS);
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* Driver for Gravis UltraSound MAX soundcard
	* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
	*/

	#include <linux/init.h>
	#include <linux/err.h>
	#include <linux/isa.h>
	#include <linux/delay.h>
	#include <linux/time.h>
	#include <linux/module.h>
	#include <asm/dma.h>
	#include <sound/core.h>
	#include <sound/gus.h>
	#include <sound/wss.h>
	#define SNDRV_LEGACY_FIND_FREE_IRQ
	#define SNDRV_LEGACY_FIND_FREE_DMA
	#include <sound/initval.h>

	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
	MODULE_DESCRIPTION("Gravis UltraSound MAX");
	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; /* 0x220,0x230,0x240,0x250,0x260 */
	static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 2,3,5,9,11,12,15 */
	static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
	static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
	static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
	/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
	static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
	static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};

	module_param_array(index, int, NULL, 0444);
	MODULE_PARM_DESC(index, "Index value for GUS MAX soundcard.");
	module_param_array(id, charp, NULL, 0444);
	MODULE_PARM_DESC(id, "ID string for GUS MAX soundcard.");
	module_param_array(enable, bool, NULL, 0444);
	MODULE_PARM_DESC(enable, "Enable GUS MAX soundcard.");
	module_param_hw_array(port, long, ioport, NULL, 0444);
	MODULE_PARM_DESC(port, "Port # for GUS MAX driver.");
	module_param_hw_array(irq, int, irq, NULL, 0444);
	MODULE_PARM_DESC(irq, "IRQ # for GUS MAX driver.");
	module_param_hw_array(dma1, int, dma, NULL, 0444);
	MODULE_PARM_DESC(dma1, "DMA1 # for GUS MAX driver.");
	module_param_hw_array(dma2, int, dma, NULL, 0444);
	MODULE_PARM_DESC(dma2, "DMA2 # for GUS MAX driver.");
	module_param_array(joystick_dac, int, NULL, 0444);
	MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS MAX driver.");
	module_param_array(channels, int, NULL, 0444);
	MODULE_PARM_DESC(channels, "Used GF1 channels for GUS MAX driver.");
	module_param_array(pcm_channels, int, NULL, 0444);
	MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS MAX driver.");

	struct snd_gusmax {
	int irq;
	struct snd_card *card;
	struct snd_gus_card *gus;
	struct snd_wss *wss;
	unsigned short gus_status_reg;
	unsigned short pcm_status_reg;
	};

	static int snd_gusmax_detect(struct snd_gus_card *gus)
	{
	unsigned char d;

	snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
	d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
	if ((d & 0x07) != 0) {
	dev_dbg(gus->card->dev, "[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
	return -ENODEV;
	}
	udelay(160);
	snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
	udelay(160);
	d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET);
	if ((d & 0x07) != 1) {
	dev_dbg(gus->card->dev, "[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
	return -ENODEV;
	}

	return 0;
	}

	static irqreturn_t snd_gusmax_interrupt(int irq, void *dev_id)
	{
	struct snd_gusmax *maxcard = dev_id;
	int loop, max = 5;
	int handled = 0;

	do {
	loop = 0;
	if (inb(maxcard->gus_status_reg)) {
	handled = 1;
	snd_gus_interrupt(irq, maxcard->gus);
	loop++;
	}
	if (inb(maxcard->pcm_status_reg) & 0x01) { /* IRQ bit is set? */
	handled = 1;
	snd_wss_interrupt(irq, maxcard->wss);
	loop++;
	}
	} while (loop && --max > 0);
	return IRQ_RETVAL(handled);
	}

	static void snd_gusmax_init(int dev, struct snd_card *card,
	struct snd_gus_card *gus)
	{
	gus->equal_irq = 1;
	gus->codec_flag = 1;
	gus->joystick_dac = joystick_dac[dev];
	/* init control register */
	gus->max_cntrl_val = (gus->gf1.port >> 4) & 0x0f;
	if (gus->gf1.dma1 > 3)
	gus->max_cntrl_val \|= 0x10;
	if (gus->gf1.dma2 > 3)
	gus->max_cntrl_val \|= 0x20;
	gus->max_cntrl_val \|= 0x40;
	outb(gus->max_cntrl_val, GUSP(gus, MAXCNTRLPORT));
	}

	static int snd_gusmax_mixer(struct snd_wss *chip)
	{
	struct snd_card *card = chip->card;
	struct snd_ctl_elem_id id1, id2;
	int err;

	memset(&id1, 0, sizeof(id1));
	memset(&id2, 0, sizeof(id2));
	id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	/* reassign AUXA to SYNTHESIZER */
	strcpy(id1.name, "Aux Playback Switch");
	strcpy(id2.name, "Synth Playback Switch");
	err = snd_ctl_rename_id(card, &id1, &id2);
	if (err < 0)
	return err;
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "Synth Playback Volume");
	err = snd_ctl_rename_id(card, &id1, &id2);
	if (err < 0)
	return err;
	/* reassign AUXB to CD */
	strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
	strcpy(id2.name, "CD Playback Switch");
	err = snd_ctl_rename_id(card, &id1, &id2);
	if (err < 0)
	return err;
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "CD Playback Volume");
	err = snd_ctl_rename_id(card, &id1, &id2);
	if (err < 0)
	return err;
	#if 0
	/* reassign Mono Input to MIC */
	if (snd_mixer_group_rename(mixer,
	SNDRV_MIXER_IN_MONO, 0,
	SNDRV_MIXER_IN_MIC, 0) < 0)
	goto __error;
	if (snd_mixer_elem_rename(mixer,
	SNDRV_MIXER_IN_MONO, 0, SNDRV_MIXER_ETYPE_INPUT,
	SNDRV_MIXER_IN_MIC, 0) < 0)
	goto __error;
	if (snd_mixer_elem_rename(mixer,
	"Mono Capture Volume", 0, SNDRV_MIXER_ETYPE_VOLUME1,
	"Mic Capture Volume", 0) < 0)
	goto __error;
	if (snd_mixer_elem_rename(mixer,
	"Mono Capture Switch", 0, SNDRV_MIXER_ETYPE_SWITCH1,
	"Mic Capture Switch", 0) < 0)
	goto __error;
	#endif
	return 0;
	}

	static int snd_gusmax_match(struct device *pdev, unsigned int dev)
	{
	return enable[dev];
	}

	static int snd_gusmax_probe(struct device *pdev, unsigned int dev)
	{
	static const int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, -1};
	static const int possible_dmas[] = {5, 6, 7, 1, 3, -1};
	int xirq, xdma1, xdma2, err;
	struct snd_card *card;
	struct snd_gus_card *gus = NULL;
	struct snd_wss *wss;
	struct snd_gusmax *maxcard;

	err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
	sizeof(struct snd_gusmax), &card);
	if (err < 0)
	return err;
	maxcard = card->private_data;
	maxcard->card = card;
	maxcard->irq = -1;

	xirq = irq[dev];
	if (xirq == SNDRV_AUTO_IRQ) {
	xirq = snd_legacy_find_free_irq(possible_irqs);
	if (xirq < 0) {
	dev_err(pdev, "unable to find a free IRQ\n");
	return -EBUSY;
	}
	}
	xdma1 = dma1[dev];
	if (xdma1 == SNDRV_AUTO_DMA) {
	xdma1 = snd_legacy_find_free_dma(possible_dmas);
	if (xdma1 < 0) {
	dev_err(pdev, "unable to find a free DMA1\n");
	return -EBUSY;
	}
	}
	xdma2 = dma2[dev];
	if (xdma2 == SNDRV_AUTO_DMA) {
	xdma2 = snd_legacy_find_free_dma(possible_dmas);
	if (xdma2 < 0) {
	dev_err(pdev, "unable to find a free DMA2\n");
	return -EBUSY;
	}
	}

	if (port[dev] != SNDRV_AUTO_PORT) {
	err = snd_gus_create(card,
	port[dev],
	-xirq, xdma1, xdma2,
	0, channels[dev],
	pcm_channels[dev],
	0, &gus);
	} else {
	static const unsigned long possible_ports[] = {
	0x220, 0x230, 0x240, 0x250, 0x260
	};
	int i;
	for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
	err = snd_gus_create(card,
	possible_ports[i],
	-xirq, xdma1, xdma2,
	0, channels[dev],
	pcm_channels[dev],
	0, &gus);
	if (err >= 0) {
	port[dev] = possible_ports[i];
	break;
	}
	}
	}
	if (err < 0)
	return err;

	err = snd_gusmax_detect(gus);
	if (err < 0)
	return err;

	maxcard->gus_status_reg = gus->gf1.reg_irqstat;
	maxcard->pcm_status_reg = gus->gf1.port + 0x10c + 2;
	snd_gusmax_init(dev, card, gus);
	err = snd_gus_initialize(gus);
	if (err < 0)
	return err;

	if (!gus->max_flag) {
	dev_err(pdev, "GUS MAX soundcard was not detected at 0x%lx\n", gus->gf1.port);
	return -ENODEV;
	}

	if (devm_request_irq(card->dev, xirq, snd_gusmax_interrupt, 0,
	"GUS MAX", (void *)maxcard)) {
	dev_err(pdev, "unable to grab IRQ %d\n", xirq);
	return -EBUSY;
	}
	maxcard->irq = xirq;
	card->sync_irq = maxcard->irq;

	err = snd_wss_create(card,
	gus->gf1.port + 0x10c, -1, xirq,
	xdma2 < 0 ? xdma1 : xdma2, xdma1,
	WSS_HW_DETECT,
	WSS_HWSHARE_IRQ \|
	WSS_HWSHARE_DMA1 \|
	WSS_HWSHARE_DMA2,
	&wss);
	if (err < 0)
	return err;

	err = snd_wss_pcm(wss, 0);
	if (err < 0)
	return err;

	err = snd_wss_mixer(wss);
	if (err < 0)
	return err;

	err = snd_wss_timer(wss, 2);
	if (err < 0)
	return err;

	if (pcm_channels[dev] > 0) {
	err = snd_gf1_pcm_new(gus, 1, 1);
	if (err < 0)
	return err;
	}
	err = snd_gusmax_mixer(wss);
	if (err < 0)
	return err;

	err = snd_gf1_rawmidi_new(gus, 0);
	if (err < 0)
	return err;

	sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %i, dma %i", gus->gf1.port, xirq, xdma1);
	if (xdma2 >= 0)
	sprintf(card->longname + strlen(card->longname), "&%i", xdma2);

	err = snd_card_register(card);
	if (err < 0)
	return err;

	maxcard->gus = gus;
	maxcard->wss = wss;

	dev_set_drvdata(pdev, card);
	return 0;
	}

	#define DEV_NAME "gusmax"

	static struct isa_driver snd_gusmax_driver = {
	.match = snd_gusmax_match,
	.probe = snd_gusmax_probe,
	/* FIXME: suspend/resume */
	.driver = {
	.name = DEV_NAME
	},
	};

	module_isa_driver(snd_gusmax_driver, SNDRV_CARDS);