sound/isa/gus/gusextreme.c - kernel/msm - Gitiles

 /*
  *  Driver for Gravis UltraSound Extreme soundcards
  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
  *
  *
  *   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 <sound/driver.h>
 #include <asm/dma.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/time.h>
 #include <linux/moduleparam.h>
 #include <sound/core.h>
 #include <sound/gus.h>
 #include <sound/es1688.h>
 #include <sound/mpu401.h>
 #include <sound/opl3.h>
 #define SNDRV_LEGACY_AUTO_PROBE
 #define SNDRV_LEGACY_FIND_FREE_IRQ
 #define SNDRV_LEGACY_FIND_FREE_DMA
 #include <sound/initval.h>

 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
 MODULE_DESCRIPTION("Gravis UltraSound Extreme");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Extreme}}");

 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;	/* 0x220,0x240,0x260 */
 static long gf1_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS) - 1] = -1}; /* 0x210,0x220,0x230,0x240,0x250,0x260,0x270 */
 static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS) - 1] = -1}; /* 0x300,0x310,0x320 */
 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
 static int gf1_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 2,3,5,9,11,12,15 */
 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
 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 Extreme soundcard.");
 module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string for GUS Extreme soundcard.");
 module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "Enable GUS Extreme soundcard.");
 module_param_array(port, long, NULL, 0444);
 MODULE_PARM_DESC(port, "Port # for GUS Extreme driver.");
 module_param_array(gf1_port, long, NULL, 0444);
 MODULE_PARM_DESC(gf1_port, "GF1 port # for GUS Extreme driver (optional).");
 module_param_array(mpu_port, long, NULL, 0444);
 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for GUS Extreme driver.");
 module_param_array(irq, int, NULL, 0444);
 MODULE_PARM_DESC(irq, "IRQ # for GUS Extreme driver.");
 module_param_array(mpu_irq, int, NULL, 0444);
 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for GUS Extreme driver.");
 module_param_array(gf1_irq, int, NULL, 0444);
 MODULE_PARM_DESC(gf1_irq, "GF1 IRQ # for GUS Extreme driver.");
 module_param_array(dma8, int, NULL, 0444);
 MODULE_PARM_DESC(dma8, "8-bit DMA # for GUS Extreme driver.");
 module_param_array(dma1, int, NULL, 0444);
 MODULE_PARM_DESC(dma1, "GF1 DMA # for GUS Extreme 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 Extreme driver.");
 module_param_array(channels, int, NULL, 0444);
 MODULE_PARM_DESC(channels, "GF1 channels for GUS Extreme driver.");
 module_param_array(pcm_channels, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Extreme driver.");

 static snd_card_t *snd_gusextreme_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

 #define PFX	"gusextreme: "

 static int __init snd_gusextreme_detect(int dev,
 					snd_card_t * card,
 					snd_gus_card_t * gus,
 					es1688_t *es1688)
 {
 	unsigned long flags;
 	unsigned char d;

 	/*
 	 * This is main stuff - enable access to GF1 chip...
 	 * I'm not sure, if this will work for card which have
 	 * ES1688 chip in another place than 0x220.
          *
          * I used reverse-engineering in DOSEMU. [--jk]
 	 *
 	 * ULTRINIT.EXE:
 	 * 0x230 = 0,2,3
 	 * 0x240 = 2,0,1
 	 * 0x250 = 2,0,3
 	 * 0x260 = 2,2,1
 	 */

 	spin_lock_irqsave(&es1688->mixer_lock, flags);
 	snd_es1688_mixer_write(es1688, 0x40, 0x0b);	/* don't change!!! */
 	spin_unlock_irqrestore(&es1688->mixer_lock, flags);
 	spin_lock_irqsave(&es1688->reg_lock, flags);
 	outb(gf1_port[dev] & 0x040 ? 2 : 0, ES1688P(es1688, INIT1));
 	outb(0, 0x201);
 	outb(gf1_port[dev] & 0x020 ? 2 : 0, ES1688P(es1688, INIT1));
 	outb(0, 0x201);
 	outb(gf1_port[dev] & 0x010 ? 3 : 1, ES1688P(es1688, INIT1));
 	spin_unlock_irqrestore(&es1688->reg_lock, flags);

 	udelay(100);

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

 static void __init snd_gusextreme_init(int dev, snd_gus_card_t * gus)
 {
 	gus->joystick_dac = joystick_dac[dev];
 }

 static int __init snd_gusextreme_mixer(es1688_t *chip)
 {
 	snd_card_t *card = chip->card;
 	snd_ctl_elem_id_t id1, id2;
 	int err;

 	memset(&id1, 0, sizeof(id1));
 	memset(&id2, 0, sizeof(id2));
 	id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 	/* reassign AUX to SYNTHESIZER */
 	strcpy(id1.name, "Aux Playback Volume");
 	strcpy(id2.name, "Synth Playback Volume");
 	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 		return err;
 	/* reassign Master Playback Switch to Synth Playback Switch */
 	strcpy(id1.name, "Master Playback Switch");
 	strcpy(id2.name, "Synth Playback Switch");
 	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
 		return err;
 	return 0;
 }

 static int __init snd_gusextreme_probe(int dev)
 {
 	static int possible_ess_irqs[] = {5, 9, 10, 7, -1};
 	static int possible_ess_dmas[] = {1, 3, 0, -1};
 	static int possible_gf1_irqs[] = {5, 11, 12, 9, 7, 15, 3, -1};
 	static int possible_gf1_dmas[] = {5, 6, 7, 1, 3, -1};
 	int xgf1_irq, xgf1_dma, xess_irq, xmpu_irq, xess_dma;
 	snd_card_t *card;
 	struct snd_gusextreme *acard;
 	snd_gus_card_t *gus;
 	es1688_t *es1688;
 	opl3_t *opl3;
 	int err;

 	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 	if (card == NULL)
 		return -ENOMEM;
 	acard = (struct snd_gusextreme *)card->private_data;

 	xgf1_irq = gf1_irq[dev];
 	if (xgf1_irq == SNDRV_AUTO_IRQ) {
 		if ((xgf1_irq = snd_legacy_find_free_irq(possible_gf1_irqs)) < 0) {
 			snd_printk(KERN_ERR PFX "unable to find a free IRQ for GF1\n");
 			err = -EBUSY;
 			goto out;
 		}
 	}
 	xess_irq = irq[dev];
 	if (xess_irq == SNDRV_AUTO_IRQ) {
 		if ((xess_irq = snd_legacy_find_free_irq(possible_ess_irqs)) < 0) {
 			snd_printk(KERN_ERR PFX "unable to find a free IRQ for ES1688\n");
 			err = -EBUSY;
 			goto out;
 		}
 	}
 	if (mpu_port[dev] == SNDRV_AUTO_PORT)
 		mpu_port[dev] = 0;
 	xmpu_irq = mpu_irq[dev];
 	if (xmpu_irq > 15)
 		xmpu_irq = -1;
 	xgf1_dma = dma1[dev];
 	if (xgf1_dma == SNDRV_AUTO_DMA) {
 		if ((xgf1_dma = snd_legacy_find_free_dma(possible_gf1_dmas)) < 0) {
 			snd_printk(KERN_ERR PFX "unable to find a free DMA for GF1\n");
 			err = -EBUSY;
 			goto out;
 		}
 	}
 	xess_dma = dma8[dev];
 	if (xess_dma == SNDRV_AUTO_DMA) {
 		if ((xess_dma = snd_legacy_find_free_dma(possible_ess_dmas)) < 0) {
 			snd_printk(KERN_ERR PFX "unable to find a free DMA for ES1688\n");
 			err = -EBUSY;
 			goto out;
 		}
 	}

 	if ((err = snd_es1688_create(card, port[dev], mpu_port[dev],
 				     xess_irq, xmpu_irq, xess_dma,
 				     ES1688_HW_1688, &es1688)) < 0)
 		goto out;
 	if (gf1_port[dev] < 0)
 		gf1_port[dev] = port[dev] + 0x20;
 	if ((err = snd_gus_create(card,
 				  gf1_port[dev],
 				  xgf1_irq,
 				  xgf1_dma,
 				  -1,
 				  0, channels[dev],
 				  pcm_channels[dev], 0,
 				  &gus)) < 0)
 		goto out;

 	if ((err = snd_gusextreme_detect(dev, card, gus, es1688)) < 0)
 		goto out;

 	snd_gusextreme_init(dev, gus);
 	if ((err = snd_gus_initialize(gus)) < 0)
 		goto out;

 	if (!gus->ess_flag) {
 		snd_printk(KERN_ERR PFX "GUS Extreme soundcard was not detected at 0x%lx\n", gus->gf1.port);
 		err = -ENODEV;
 		goto out;
 	}
 	if ((err = snd_es1688_pcm(es1688, 0, NULL)) < 0)
 		goto out;

 	if ((err = snd_es1688_mixer(es1688)) < 0)
 		goto out;

 	snd_component_add(card, "ES1688");
 	if (pcm_channels[dev] > 0) {
 		if ((err = snd_gf1_pcm_new(gus, 1, 1, NULL)) < 0)
 			goto out;
 	}
 	if ((err = snd_gf1_new_mixer(gus)) < 0)
 		goto out;

 	if ((err = snd_gusextreme_mixer(es1688)) < 0)
 		goto out;

 	if (snd_opl3_create(card, es1688->port, es1688->port + 2,
 			    OPL3_HW_OPL3, 0, &opl3) < 0) {
 		printk(KERN_ERR PFX "gusextreme: opl3 not detected at 0x%lx\n", es1688->port);
 	} else {
 		if ((err = snd_opl3_hwdep_new(opl3, 0, 2, NULL)) < 0)
 			goto out;
 	}

 	if (es1688->mpu_port >= 0x300 &&
 	    (err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
 					       es1688->mpu_port, 0,
 					       xmpu_irq,
 					       SA_INTERRUPT,
 					       NULL)) < 0)
 		goto out;

 	sprintf(card->longname, "Gravis UltraSound Extreme at 0x%lx, irq %i&%i, dma %i&%i",
 		es1688->port, xgf1_irq, xess_irq, xgf1_dma, xess_dma);

 	if ((err = snd_card_set_generic_dev(card)) < 0)
 		goto out;

 	if ((err = snd_card_register(card)) < 0)
 		goto out;

 	snd_gusextreme_cards[dev] = card;
 	return 0;

       out:
 	snd_card_free(card);
 	return err;
 }

 static int __init snd_gusextreme_legacy_auto_probe(unsigned long xport)
 {
         static int dev;
         int res;

         for ( ; dev < SNDRV_CARDS; dev++) {
                 if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
                         continue;
                 port[dev] = xport;
                 res = snd_gusextreme_probe(dev);
                 if (res < 0)
                         port[dev] = SNDRV_AUTO_PORT;
                 return res;
         }
         return -ENODEV;
 }

 static int __init alsa_card_gusextreme_init(void)
 {
 	static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
 	int dev, cards, i;

 	for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev] > 0; dev++) {
 		if (port[dev] == SNDRV_AUTO_PORT)
 			continue;
 		if (snd_gusextreme_probe(dev) >= 0)
 			cards++;
 	}
 	i = snd_legacy_auto_probe(possible_ports, snd_gusextreme_legacy_auto_probe);
 	if (i > 0)
 		cards += i;

 	if (!cards) {
 #ifdef MODULE
 		printk(KERN_ERR "GUS Extreme soundcard not found or device busy\n");
 #endif
 		return -ENODEV;
 	}
 	return 0;
 }

 static void __exit alsa_card_gusextreme_exit(void)
 {
 	int idx;
 	snd_card_t *card;
 	struct snd_gusextreme *acard;

 	for (idx = 0; idx < SNDRV_CARDS; idx++) {
 		card = snd_gusextreme_cards[idx];
 		if (card == NULL)
 			continue;
 		acard = (struct snd_gusextreme *)card->private_data;
 		snd_card_free(snd_gusextreme_cards[idx]);
 	}
 }

 module_init(alsa_card_gusextreme_init)
 module_exit(alsa_card_gusextreme_exit)
	/*
	* Driver for Gravis UltraSound Extreme soundcards
	* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
	*
	*
	* 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 <sound/driver.h>
	#include <asm/dma.h>
	#include <linux/init.h>
	#include <linux/delay.h>
	#include <linux/time.h>
	#include <linux/moduleparam.h>
	#include <sound/core.h>
	#include <sound/gus.h>
	#include <sound/es1688.h>
	#include <sound/mpu401.h>
	#include <sound/opl3.h>
	#define SNDRV_LEGACY_AUTO_PROBE
	#define SNDRV_LEGACY_FIND_FREE_IRQ
	#define SNDRV_LEGACY_FIND_FREE_DMA
	#include <sound/initval.h>

	MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
	MODULE_DESCRIPTION("Gravis UltraSound Extreme");
	MODULE_LICENSE("GPL");
	MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Extreme}}");

	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; /* 0x220,0x240,0x260 */
	static long gf1_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS) - 1] = -1}; /* 0x210,0x220,0x230,0x240,0x250,0x260,0x270 */
	static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS) - 1] = -1}; /* 0x300,0x310,0x320 */
	static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
	static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
	static int gf1_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 2,3,5,9,11,12,15 */
	static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3 */
	static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
	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 Extreme soundcard.");
	module_param_array(id, charp, NULL, 0444);
	MODULE_PARM_DESC(id, "ID string for GUS Extreme soundcard.");
	module_param_array(enable, bool, NULL, 0444);
	MODULE_PARM_DESC(enable, "Enable GUS Extreme soundcard.");
	module_param_array(port, long, NULL, 0444);
	MODULE_PARM_DESC(port, "Port # for GUS Extreme driver.");
	module_param_array(gf1_port, long, NULL, 0444);
	MODULE_PARM_DESC(gf1_port, "GF1 port # for GUS Extreme driver (optional).");
	module_param_array(mpu_port, long, NULL, 0444);
	MODULE_PARM_DESC(mpu_port, "MPU-401 port # for GUS Extreme driver.");
	module_param_array(irq, int, NULL, 0444);
	MODULE_PARM_DESC(irq, "IRQ # for GUS Extreme driver.");
	module_param_array(mpu_irq, int, NULL, 0444);
	MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for GUS Extreme driver.");
	module_param_array(gf1_irq, int, NULL, 0444);
	MODULE_PARM_DESC(gf1_irq, "GF1 IRQ # for GUS Extreme driver.");
	module_param_array(dma8, int, NULL, 0444);
	MODULE_PARM_DESC(dma8, "8-bit DMA # for GUS Extreme driver.");
	module_param_array(dma1, int, NULL, 0444);
	MODULE_PARM_DESC(dma1, "GF1 DMA # for GUS Extreme 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 Extreme driver.");
	module_param_array(channels, int, NULL, 0444);
	MODULE_PARM_DESC(channels, "GF1 channels for GUS Extreme driver.");
	module_param_array(pcm_channels, int, NULL, 0444);
	MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Extreme driver.");

	static snd_card_t *snd_gusextreme_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

	#define PFX "gusextreme: "

	static int __init snd_gusextreme_detect(int dev,
	snd_card_t * card,
	snd_gus_card_t * gus,
	es1688_t *es1688)
	{
	unsigned long flags;
	unsigned char d;

	/*
	* This is main stuff - enable access to GF1 chip...
	* I'm not sure, if this will work for card which have
	* ES1688 chip in another place than 0x220.
	*
	* I used reverse-engineering in DOSEMU. [--jk]
	*
	* ULTRINIT.EXE:
	* 0x230 = 0,2,3
	* 0x240 = 2,0,1
	* 0x250 = 2,0,3
	* 0x260 = 2,2,1
	*/

	spin_lock_irqsave(&es1688->mixer_lock, flags);
	snd_es1688_mixer_write(es1688, 0x40, 0x0b); /* don't change!!! */
	spin_unlock_irqrestore(&es1688->mixer_lock, flags);
	spin_lock_irqsave(&es1688->reg_lock, flags);
	outb(gf1_port[dev] & 0x040 ? 2 : 0, ES1688P(es1688, INIT1));
	outb(0, 0x201);
	outb(gf1_port[dev] & 0x020 ? 2 : 0, ES1688P(es1688, INIT1));
	outb(0, 0x201);
	outb(gf1_port[dev] & 0x010 ? 3 : 1, ES1688P(es1688, INIT1));
	spin_unlock_irqrestore(&es1688->reg_lock, flags);

	udelay(100);

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

	static void __init snd_gusextreme_init(int dev, snd_gus_card_t * gus)
	{
	gus->joystick_dac = joystick_dac[dev];
	}

	static int __init snd_gusextreme_mixer(es1688_t *chip)
	{
	snd_card_t *card = chip->card;
	snd_ctl_elem_id_t id1, id2;
	int err;

	memset(&id1, 0, sizeof(id1));
	memset(&id2, 0, sizeof(id2));
	id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	/* reassign AUX to SYNTHESIZER */
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "Synth Playback Volume");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
	return err;
	/* reassign Master Playback Switch to Synth Playback Switch */
	strcpy(id1.name, "Master Playback Switch");
	strcpy(id2.name, "Synth Playback Switch");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
	return err;
	return 0;
	}

	static int __init snd_gusextreme_probe(int dev)
	{
	static int possible_ess_irqs[] = {5, 9, 10, 7, -1};
	static int possible_ess_dmas[] = {1, 3, 0, -1};
	static int possible_gf1_irqs[] = {5, 11, 12, 9, 7, 15, 3, -1};
	static int possible_gf1_dmas[] = {5, 6, 7, 1, 3, -1};
	int xgf1_irq, xgf1_dma, xess_irq, xmpu_irq, xess_dma;
	snd_card_t *card;
	struct snd_gusextreme *acard;
	snd_gus_card_t *gus;
	es1688_t *es1688;
	opl3_t *opl3;
	int err;

	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
	return -ENOMEM;
	acard = (struct snd_gusextreme *)card->private_data;

	xgf1_irq = gf1_irq[dev];
	if (xgf1_irq == SNDRV_AUTO_IRQ) {
	if ((xgf1_irq = snd_legacy_find_free_irq(possible_gf1_irqs)) < 0) {
	snd_printk(KERN_ERR PFX "unable to find a free IRQ for GF1\n");
	err = -EBUSY;
	goto out;
	}
	}
	xess_irq = irq[dev];
	if (xess_irq == SNDRV_AUTO_IRQ) {
	if ((xess_irq = snd_legacy_find_free_irq(possible_ess_irqs)) < 0) {
	snd_printk(KERN_ERR PFX "unable to find a free IRQ for ES1688\n");
	err = -EBUSY;
	goto out;
	}
	}
	if (mpu_port[dev] == SNDRV_AUTO_PORT)
	mpu_port[dev] = 0;
	xmpu_irq = mpu_irq[dev];
	if (xmpu_irq > 15)
	xmpu_irq = -1;
	xgf1_dma = dma1[dev];
	if (xgf1_dma == SNDRV_AUTO_DMA) {
	if ((xgf1_dma = snd_legacy_find_free_dma(possible_gf1_dmas)) < 0) {
	snd_printk(KERN_ERR PFX "unable to find a free DMA for GF1\n");
	err = -EBUSY;
	goto out;
	}
	}
	xess_dma = dma8[dev];
	if (xess_dma == SNDRV_AUTO_DMA) {
	if ((xess_dma = snd_legacy_find_free_dma(possible_ess_dmas)) < 0) {
	snd_printk(KERN_ERR PFX "unable to find a free DMA for ES1688\n");
	err = -EBUSY;
	goto out;
	}
	}

	if ((err = snd_es1688_create(card, port[dev], mpu_port[dev],
	xess_irq, xmpu_irq, xess_dma,
	ES1688_HW_1688, &es1688)) < 0)
	goto out;
	if (gf1_port[dev] < 0)
	gf1_port[dev] = port[dev] + 0x20;
	if ((err = snd_gus_create(card,
	gf1_port[dev],
	xgf1_irq,
	xgf1_dma,
	-1,
	0, channels[dev],
	pcm_channels[dev], 0,
	&gus)) < 0)
	goto out;

	if ((err = snd_gusextreme_detect(dev, card, gus, es1688)) < 0)
	goto out;

	snd_gusextreme_init(dev, gus);
	if ((err = snd_gus_initialize(gus)) < 0)
	goto out;

	if (!gus->ess_flag) {
	snd_printk(KERN_ERR PFX "GUS Extreme soundcard was not detected at 0x%lx\n", gus->gf1.port);
	err = -ENODEV;
	goto out;
	}
	if ((err = snd_es1688_pcm(es1688, 0, NULL)) < 0)
	goto out;

	if ((err = snd_es1688_mixer(es1688)) < 0)
	goto out;

	snd_component_add(card, "ES1688");
	if (pcm_channels[dev] > 0) {
	if ((err = snd_gf1_pcm_new(gus, 1, 1, NULL)) < 0)
	goto out;
	}
	if ((err = snd_gf1_new_mixer(gus)) < 0)
	goto out;

	if ((err = snd_gusextreme_mixer(es1688)) < 0)
	goto out;

	if (snd_opl3_create(card, es1688->port, es1688->port + 2,
	OPL3_HW_OPL3, 0, &opl3) < 0) {
	printk(KERN_ERR PFX "gusextreme: opl3 not detected at 0x%lx\n", es1688->port);
	} else {
	if ((err = snd_opl3_hwdep_new(opl3, 0, 2, NULL)) < 0)
	goto out;
	}

	if (es1688->mpu_port >= 0x300 &&
	(err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
	es1688->mpu_port, 0,
	xmpu_irq,
	SA_INTERRUPT,
	NULL)) < 0)
	goto out;

	sprintf(card->longname, "Gravis UltraSound Extreme at 0x%lx, irq %i&%i, dma %i&%i",
	es1688->port, xgf1_irq, xess_irq, xgf1_dma, xess_dma);

	if ((err = snd_card_set_generic_dev(card)) < 0)
	goto out;

	if ((err = snd_card_register(card)) < 0)
	goto out;

	snd_gusextreme_cards[dev] = card;
	return 0;

	out:
	snd_card_free(card);
	return err;
	}

	static int __init snd_gusextreme_legacy_auto_probe(unsigned long xport)
	{
	static int dev;
	int res;

	for ( ; dev < SNDRV_CARDS; dev++) {
	if (!enable[dev] \|\| port[dev] != SNDRV_AUTO_PORT)
	continue;
	port[dev] = xport;
	res = snd_gusextreme_probe(dev);
	if (res < 0)
	port[dev] = SNDRV_AUTO_PORT;
	return res;
	}
	return -ENODEV;
	}

	static int __init alsa_card_gusextreme_init(void)
	{
	static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
	int dev, cards, i;

	for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev] > 0; dev++) {
	if (port[dev] == SNDRV_AUTO_PORT)
	continue;
	if (snd_gusextreme_probe(dev) >= 0)
	cards++;
	}
	i = snd_legacy_auto_probe(possible_ports, snd_gusextreme_legacy_auto_probe);
	if (i > 0)
	cards += i;

	if (!cards) {
	#ifdef MODULE
	printk(KERN_ERR "GUS Extreme soundcard not found or device busy\n");
	#endif
	return -ENODEV;
	}
	return 0;
	}

	static void __exit alsa_card_gusextreme_exit(void)
	{
	int idx;
	snd_card_t *card;
	struct snd_gusextreme *acard;

	for (idx = 0; idx < SNDRV_CARDS; idx++) {
	card = snd_gusextreme_cards[idx];
	if (card == NULL)
	continue;
	acard = (struct snd_gusextreme *)card->private_data;
	snd_card_free(snd_gusextreme_cards[idx]);
	}
	}

	module_init(alsa_card_gusextreme_init)
	module_exit(alsa_card_gusextreme_exit)