/*
    card-opti92x-ad1848.c - driver for OPTi 82c92x based soundcards.
    Copyright (C) 1998-2000 by Massimo Piccioni <dafastidio@libero.it>

    Part of this code was developed at the Italian Ministry of Air Defence,
    Sixth Division (oh, che pace ...), Rome.

    Thanks to Maria Grazia Pollarini, Salvatore Vassallo.

    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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define SNDRV_MAIN_OBJECT_FILE
#include <sound/driver.h>
#ifdef CS4231
#include <sound/cs4231.h>
#else
#ifndef OPTi93X
#include <sound/ad1848.h>
#else
#include <sound/control.h>
#include <sound/pcm.h>
#endif	/* OPTi93X */
#endif	/* CS4231 */
#include <sound/mpu401.h>
#include <sound/opl3.h>
#define SNDRV_LEGACY_FIND_FREE_IOPORT
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#define SNDRV_GET_ID
#include <sound/initval.h>

EXPORT_NO_SYMBOLS;
#ifdef OPTi93X
MODULE_DESCRIPTION("OPTi93X");
MODULE_CLASSES("{sound}");
MODULE_DEVICES("{{OPTi,82C931/3}}");
#else	/* OPTi93X */
#ifdef CS4231
MODULE_DESCRIPTION("OPTi92X - CS4231");
MODULE_CLASSES("{sound}");
MODULE_DEVICES("{{OPTi,82C924 (CS4231)},"
		"{OPTi,82C925 (CS4231)}}");
#else	/* CS4231 */
MODULE_DESCRIPTION("OPTi92X - AD1848");
MODULE_CLASSES("{sound}");
MODULE_DEVICES("{{OPTi,82C924 (AD1848)},"
		"{OPTi,82C925 (AD1848)}}");
#endif	/* CS4231 */
#endif	/* OPTi93X */

static int snd_index = SNDRV_DEFAULT_IDX1;	/* Index 0-MAX */
static char *snd_id = SNDRV_DEFAULT_STR1;		/* ID for this card */
//static int snd_enable = SNDRV_DEFAULT_ENABLE1;	/* Enable this card */
static int snd_isapnp = 1;			/* Enable ISA PnP detection */
static long snd_port = SNDRV_DEFAULT_PORT1; 	/* 0x530,0xe80,0xf40,0x604 */
static long snd_mpu_port = SNDRV_DEFAULT_PORT1;	/* 0x300,0x310,0x320,0x330 */
static long snd_fm_port = SNDRV_DEFAULT_PORT1;	/* 0x388 */
static int snd_irq = SNDRV_DEFAULT_IRQ1;		/* 5,7,9,10,11 */
static int snd_mpu_irq = SNDRV_DEFAULT_IRQ1;	/* 5,7,9,10 */
static int snd_dma1 = SNDRV_DEFAULT_DMA1;		/* 0,1,3 */
#if defined(CS4231) || defined(OPTi93X)
static int snd_dma2 = SNDRV_DEFAULT_DMA1;		/* 0,1,3 */
#endif	/* CS4231 || OPTi93X */

MODULE_PARM(snd_index, "i");
MODULE_PARM_DESC(snd_index, "Index value for opti9xx based soundcard.");
MODULE_PARM_SYNTAX(snd_index, SNDRV_INDEX_DESC);
MODULE_PARM(snd_id, "s");
MODULE_PARM_DESC(snd_id, "ID string for opti9xx based soundcard.");
MODULE_PARM_SYNTAX(snd_id, SNDRV_ID_DESC);
//MODULE_PARM(snd_enable, "i");
//MODULE_PARM_DESC(snd_enable, "Enable opti9xx soundcard.");
//MODULE_PARM_SYNTAX(snd_enable, SNDRV_ENABLE_DESC);
MODULE_PARM(snd_isapnp, "i");
MODULE_PARM_DESC(snd_isapnp, "Enable ISA PnP detection for specified soundcard.");
MODULE_PARM_SYNTAX(snd_isapnp, SNDRV_ISAPNP_DESC);
MODULE_PARM(snd_port, "l");
MODULE_PARM_DESC(snd_port, "WSS port # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_port, SNDRV_PORT_DESC);
MODULE_PARM(snd_mpu_port, "l");
MODULE_PARM_DESC(snd_mpu_port, "MPU-401 port # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_mpu_port, SNDRV_PORT_DESC);
MODULE_PARM(snd_fm_port, "l");
MODULE_PARM_DESC(snd_fm_port, "FM port # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_fm_port, SNDRV_PORT_DESC);
MODULE_PARM(snd_irq, "i");
MODULE_PARM_DESC(snd_irq, "WSS irq # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_irq, SNDRV_IRQ_DESC);
MODULE_PARM(snd_mpu_irq, "i");
MODULE_PARM_DESC(snd_mpu_irq, "MPU-401 irq # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_mpu_irq, SNDRV_IRQ_DESC);
MODULE_PARM(snd_dma1, "i");
MODULE_PARM_DESC(snd_dma1, "1st dma # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_dma1, SNDRV_DMA_DESC);
#if defined(CS4231) || defined(OPTi93X)
MODULE_PARM(snd_dma2, "i");
MODULE_PARM_DESC(snd_dma2, "2nd dma # for opti9xx driver.");
MODULE_PARM_SYNTAX(snd_dma2, SNDRV_DMA_DESC);
#endif	/* CS4231 || OPTi93X */

#define OPTi9XX_HW_DETECT	0
#define OPTi9XX_HW_82C928	1
#define OPTi9XX_HW_82C929	2
#define OPTi9XX_HW_82C924	3
#define OPTi9XX_HW_82C925	4
#define OPTi9XX_HW_82C930	5
#define OPTi9XX_HW_82C931	6
#define OPTi9XX_HW_82C933	7
#define OPTi9XX_HW_LAST		OPTi9XX_HW_82C933

#define OPTi9XX_MC_REG(n)	n

typedef struct _snd_opti9xx opti9xx_t;

#ifdef OPTi93X

#define OPTi93X_INDEX			0x00
#define OPTi93X_DATA			0x01
#define OPTi93X_STATUS			0x02
#define OPTi93X_DDATA			0x03
#define OPTi93X_PORT(chip, r)		((chip)->port + OPTi93X_##r)

#define OPTi93X_MIXOUT_LEFT		0x00
#define OPTi93X_MIXOUT_RIGHT		0x01
#define OPTi93X_CD_LEFT_INPUT		0x02
#define OPTi93X_CD_RIGHT_INPUT		0x03
#define OPTi930_AUX_LEFT_INPUT		0x04
#define OPTi930_AUX_RIGHT_INPUT		0x05
#define OPTi931_FM_LEFT_INPUT		0x04
#define OPTi931_FM_RIGHT_INPUT		0x05
#define OPTi93X_DAC_LEFT		0x06
#define OPTi93X_DAC_RIGHT		0x07
#define OPTi93X_PLAY_FORMAT		0x08
#define OPTi93X_IFACE_CONF		0x09
#define OPTi93X_PIN_CTRL		0x0a
#define OPTi93X_ERR_INIT		0x0b
#define OPTi93X_ID			0x0c
#define OPTi93X_PLAY_UPR_CNT		0x0e
#define OPTi93X_PLAY_LWR_CNT		0x0f
#define OPTi931_AUX_LEFT_INPUT		0x10
#define OPTi931_AUX_RIGHT_INPUT		0x11
#define OPTi93X_LINE_LEFT_INPUT		0x12
#define OPTi93X_LINE_RIGHT_INPUT	0x13
#define OPTi93X_MIC_LEFT_INPUT		0x14
#define OPTi93X_MIC_RIGHT_INPUT		0x15
#define OPTi93X_OUT_LEFT		0x16
#define OPTi93X_OUT_RIGHT		0x17
#define OPTi93X_CAPT_FORMAT		0x1c
#define OPTi93X_CAPT_UPR_CNT		0x1e
#define OPTi93X_CAPT_LWR_CNT		0x1f

#define OPTi93X_TRD			0x20
#define OPTi93X_MCE			0x40
#define OPTi93X_INIT			0x80

#define OPTi93X_MIXOUT_MIC_GAIN		0x20
#define OPTi93X_MIXOUT_LINE		0x00
#define OPTi93X_MIXOUT_CD		0x40
#define OPTi93X_MIXOUT_MIC		0x80
#define OPTi93X_MIXOUT_MIXER		0xc0

#define OPTi93X_STEREO			0x10
#define OPTi93X_LINEAR_8		0x00
#define OPTi93X_ULAW_8			0x20
#define OPTi93X_LINEAR_16_LIT		0x40
#define OPTi93X_ALAW_8			0x60
#define OPTi93X_ADPCM_16		0xa0
#define OPTi93X_LINEAR_16_BIG		0xc0

#define OPTi93X_CAPTURE_PIO		0x80
#define OPTi93X_PLAYBACK_PIO		0x40
#define OPTi93X_AUTOCALIB		0x08
#define OPTi93X_SINGLE_DMA		0x04
#define OPTi93X_CAPTURE_ENABLE		0x02
#define OPTi93X_PLAYBACK_ENABLE		0x01

#define OPTi93X_IRQ_ENABLE		0x02

#define OPTi93X_DMA_REQUEST		0x10
#define OPTi93X_CALIB_IN_PROGRESS	0x20

#define OPTi93X_IRQ_PLAYBACK		0x04
#define OPTi93X_IRQ_CAPTURE		0x08


typedef struct _snd_opti93x opti93x_t;

struct _snd_opti93x {
	unsigned long port;
	struct resource *res_port;
	int irq;
	int dma1;
	int dma2;

	opti9xx_t *chip;
	unsigned short hardware;
	unsigned char image[32];

	unsigned char mce_bit;
	unsigned short mode;
	int mute;

	spinlock_t lock;

	snd_card_t *card;
	snd_pcm_t *pcm;
	snd_pcm_substream_t *playback_substream;
	snd_pcm_substream_t *capture_substream;
	unsigned int p_dma_size;
	unsigned int c_dma_size;
};

#define OPTi93X_MODE_NONE	0x00
#define OPTi93X_MODE_PLAY	0x01
#define OPTi93X_MODE_CAPTURE	0x02
#define OPTi93X_MODE_OPEN	(OPTi93X_MODE_PLAY | OPTi93X_MODE_CAPTURE)

#endif /* OPTi93X */

struct _snd_opti9xx {
	unsigned short hardware;
	unsigned char password;
	char name[7];

	unsigned long mc_base;
	struct resource *res_mc_base;
	unsigned long mc_base_size;
#ifdef OPTi93X
	unsigned long mc_indir_index;
#endif	/* OPTi93X */
	unsigned long pwd_reg;

	spinlock_t lock;

	long wss_base;
	int irq;
	int dma1;
#if defined(CS4231) || defined(OPTi93X)
	int dma2;
#endif	/* CS4231 || OPTi93X */

	long fm_port;

	long mpu_port;
	int mpu_irq;

#if defined(OPTi93X)
	opti93x_t *opti93x;
#elif defined(CS4231)
	cs4231_t *cs4231;
#else
	ad1848_t *ad1848;
#endif	/* AD1848 */
	snd_rawmidi_t *rmidi;
#ifdef __ISAPNP__
	struct isapnp_dev *dev;
	struct isapnp_dev *devmpu;
#endif	/* __ISAPNP__ */
};

static snd_card_t *snd_opti9xx_card = SNDRV_DEFAULT_PTR1;

#ifdef __ISAPNP__

#ifdef TARGET_OS2
#define ISAPNP_OPTI9XX(_va, _vb, _vc, _device, _fa, _fb, _fc, _audio, _mpu401) \
	{ \
		0, ISAPNP_CARD_ID(_va, _vb, _vc, _device), \
		{ ISAPNP_DEVICE_ID(_fa, _fb, _fc, _audio), \
		  ISAPNP_DEVICE_ID(_fa, _fb, _fc, _mpu401), } \
	}
#else
#define ISAPNP_OPTI9XX(_va, _vb, _vc, _device, _fa, _fb, _fc, _audio, _mpu401) \
	{ \
		ISAPNP_CARD_ID(_va, _vb, _vc, _device), \
		devs: { ISAPNP_DEVICE_ID(_fa, _fb, _fc, _audio), \
			ISAPNP_DEVICE_ID(_fa, _fb, _fc, _mpu401), } \
	}
#endif

static struct isapnp_card_id snd_card_opti9xx_pnpids[] = {
#ifndef OPTi93X
	/* OPTi 82C924 */
	ISAPNP_OPTI9XX('O','P','T',0x0924,'O','P','T',0x0000,0x0002),
	/* OPTi 82C925 */
	ISAPNP_OPTI9XX('O','P','T',0x0925,'O','P','T',0x9250,0x0002),
#else
	/* OPTi 82C931/3 */
	ISAPNP_OPTI9XX('O','P','T',0x0931,'O','P','T',0x9310,0x0002),
#endif	/* OPTi93X */
	{ ISAPNP_CARD_END, }
};

ISAPNP_CARD_TABLE(snd_card_opti9xx_pnpids);

#endif	/* __ISAPNP__ */

#ifdef OPTi93X
#define DRIVER_NAME	"snd-card-opti93x"
#else
#define DRIVER_NAME	"snd-card-opti92x"
#endif	/* OPTi93X */

static char * snd_opti9xx_names[] = {
	"unkown",
	"82C928",	"82C929",
	"82C924",	"82C925",
	"82C930",	"82C931",	"82C933"
};


static int __init snd_opti9xx_init(opti9xx_t *chip, unsigned short hardware)
{
	chip->hardware = hardware;
	strcpy(chip->name, snd_opti9xx_names[hardware]);

	spin_lock_init(&chip->lock);

	chip->wss_base = -1;
	chip->irq = -1;
	chip->dma1 = -1;
#if defined(CS4231) || defined (OPTi93X)
	chip->dma2 = -1;
#endif 	/* CS4231 || OPTi93X */
	chip->fm_port = -1;
	chip->mpu_port = -1;
	chip->mpu_irq = -1;

	switch (hardware) {
#ifndef OPTi93X
	case OPTi9XX_HW_82C928:
	case OPTi9XX_HW_82C929:
		chip->mc_base = 0xf8c;
		chip->password = (hardware == OPTi9XX_HW_82C928) ? 0xe2 : 0xe3;
		chip->pwd_reg = 3;
		break;

	case OPTi9XX_HW_82C924:
	case OPTi9XX_HW_82C925:
		chip->mc_base = 0xf8c;
		chip->password = 0xe5;
		chip->pwd_reg = 3;
		break;
#else	/* OPTi93X */

	case OPTi9XX_HW_82C930:
	case OPTi9XX_HW_82C931:
	case OPTi9XX_HW_82C933:
		chip->mc_base = (hardware == OPTi9XX_HW_82C930) ? 0xf8f : 0xf8d;
		chip->mc_indir_index = 0xe0e;
		chip->password = 0xe4;
		chip->pwd_reg = 0;
		break;
#endif	/* OPTi93X */

	default:
		snd_printk("chip %d not supported\n", hardware);
		return -ENODEV;
	}
	return 0;
}

static unsigned char snd_opti9xx_read(opti9xx_t *chip,
				      unsigned char reg)
{
	unsigned long flags;
	unsigned char retval = 0xff;

	spin_lock_irqsave(&chip->lock, flags);
	outb(chip->password, chip->mc_base + chip->pwd_reg);

	switch (chip->hardware) {
#ifndef OPTi93X
	case OPTi9XX_HW_82C924:
	case OPTi9XX_HW_82C925:
		if (reg > 7) {
			outb(reg, chip->mc_base + 8);
			outb(chip->password, chip->mc_base + chip->pwd_reg);
			retval = inb(chip->mc_base + 9);
			break;
		}

	case OPTi9XX_HW_82C928:
	case OPTi9XX_HW_82C929:
		retval = inb(chip->mc_base + reg);
		break;
#else	/* OPTi93X */

	case OPTi9XX_HW_82C930:
	case OPTi9XX_HW_82C931:
	case OPTi9XX_HW_82C933:
		outb(reg, chip->mc_indir_index);
		outb(chip->password, chip->mc_base + chip->pwd_reg);
		retval = inb(chip->mc_indir_index + 1);
		break;
#endif	/* OPTi93X */

	default:
		snd_printk("chip %d not supported\n", chip->hardware);
	}

	spin_unlock_irqrestore(&chip->lock, flags);
	return retval;
}
	
static void snd_opti9xx_write(opti9xx_t *chip, unsigned char reg,
			      unsigned char value)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);
	outb(chip->password, chip->mc_base + chip->pwd_reg);

	switch (chip->hardware) {
#ifndef OPTi93X
	case OPTi9XX_HW_82C924:
	case OPTi9XX_HW_82C925:
		if (reg > 7) {
			outb(reg, chip->mc_base + 8);
			outb(chip->password, chip->mc_base + chip->pwd_reg);
			outb(value, chip->mc_base + 9);
			break;
		}

	case OPTi9XX_HW_82C928:
	case OPTi9XX_HW_82C929:
		outb(value, chip->mc_base + reg);
		break;
#else	/* OPTi93X */

	case OPTi9XX_HW_82C930:
	case OPTi9XX_HW_82C931:
	case OPTi9XX_HW_82C933:
		outb(reg, chip->mc_indir_index);
		outb(chip->password, chip->mc_base + chip->pwd_reg);
		outb(value, chip->mc_indir_index + 1);
		break;
#endif	/* OPTi93X */

	default:
		snd_printk("chip %d not supported\n", chip->hardware);
	}

	spin_unlock_irqrestore(&chip->lock, flags);
}


#define snd_opti9xx_write_mask(chip, reg, value, mask)	\
	snd_opti9xx_write(chip, reg,			\
		(snd_opti9xx_read(chip, reg) & ~(mask)) | ((value) & (mask)))


static int __init snd_opti9xx_configure(opti9xx_t *chip)
{
	unsigned char wss_base_bits;
	unsigned char irq_bits;
	unsigned char dma_bits;
	unsigned char mpu_port_bits = 0;
	unsigned char mpu_irq_bits;
	unsigned long flags;

	switch (chip->hardware) {
#ifndef OPTi93X
	case OPTi9XX_HW_82C924:
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(4), 0xf0, 0xfc);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(6), 0x02, 0x02);

	case OPTi9XX_HW_82C925:
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(1), 0x80, 0x80);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(2), 0x00, 0x20);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(3), 0xf0, 0xff);
#ifdef CS4231
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(5), 0x02, 0x02);
#else
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(5), 0x00, 0x02);
#endif	/* CS4231 */
		break;

	case OPTi9XX_HW_82C928:
	case OPTi9XX_HW_82C929:
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(1), 0x80, 0x80);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(2), 0x00, 0x20);
		/*
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(3), 0xa2, 0xae);
		*/
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(4), 0x00, 0x0c);
#ifdef CS4231
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(5), 0x02, 0x02);
#else
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(5), 0x00, 0x02);
#endif	/* CS4231 */
		break;

#else	/* OPTi93X */
	case OPTi9XX_HW_82C930:
	case OPTi9XX_HW_82C931:
	case OPTi9XX_HW_82C933:
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(6), 0x02, 0x03);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(3), 0x00, 0xff);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(4), 0x10 |
			(chip->hardware == OPTi9XX_HW_82C930 ? 0x00 : 0x04),
			0x34);
		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(5), 0x20, 0xbf);
		break;
#endif	/* OPTi93X */

	default:
		snd_printk("chip %d not supported\n", chip->hardware);
		return -EINVAL;
	}

	switch (chip->wss_base) {
	case 0x530:
		wss_base_bits = 0x00;
		break;
	case 0x604:
		wss_base_bits = 0x03;
		break;
	case 0xe80:
		wss_base_bits = 0x01;
		break;
	case 0xf40:
		wss_base_bits = 0x02;
		break;
	default:
		snd_printk("WSS port 0x%lx not valid\n", chip->wss_base);
		goto __skip_base;
	}
	snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(1), wss_base_bits << 4, 0x30);

__skip_base:
	switch (chip->irq) {
#ifdef OPTi93X
	case 5:
		irq_bits = 0x05;
		break;
#endif	/* OPTi93X */
	case 7:
		irq_bits = 0x01;
		break;
	case 9:
		irq_bits = 0x02;
		break;
	case 10:
		irq_bits = 0x03;
		break;
	case 11:
		irq_bits = 0x04;
		break;
	default:
		snd_printk("WSS irq # %d not valid\n", chip->irq);
		goto __skip_resources;
	}

	switch (chip->dma1) {
	case 0:
		dma_bits = 0x01;
		break;
	case 1:
		dma_bits = 0x02;
		break;
	case 3:
		dma_bits = 0x03;
		break;
	default:
		snd_printk("WSS dma1 # %d not valid\n", chip->dma1);
		goto __skip_resources;
	}

#if defined(CS4231) || defined(OPTi93X)
	if (chip->dma1 == chip->dma2) {
		snd_printk("don't want to share dmas\n");
		return -EBUSY;
	}

	switch (chip->dma2) {
	case 0:
	case 1:
		break;
	default:
		snd_printk("WSS dma2 # %d not valid\n", chip->dma2);
		goto __skip_resources;
	}
	dma_bits |= 0x04;
#endif	/* CS4231 || OPTi93X */

	spin_lock_irqsave(&chip->lock, flags);
	outb(irq_bits << 3 | dma_bits, chip->wss_base);
	spin_unlock_irqrestore(&chip->lock, flags);

__skip_resources:
	if (chip->hardware > OPTi9XX_HW_82C928) {
		switch (chip->mpu_port) {
		case -1:
			break;
		case 0x300:
			mpu_port_bits = 0x03;
			break;
		case 0x310:
			mpu_port_bits = 0x02;
			break;
		case 0x320:
			mpu_port_bits = 0x01;
			break;
		case 0x330:
			mpu_port_bits = 0x00;
			break;
		default:
			snd_printk("MPU-401 port 0x%lx not valid\n",
				chip->mpu_port);
			goto __skip_mpu;
		}

		switch (chip->mpu_irq) {
		case 5:
			mpu_irq_bits = 0x02;
			break;
		case 7:
			mpu_irq_bits = 0x03;
			break;
		case 9:
			mpu_irq_bits = 0x00;
			break;
		case 10:
			mpu_irq_bits = 0x01;
			break;
		default:
			snd_printk("MPU-401 irq # %d not valid\n",
				chip->mpu_irq);
			goto __skip_mpu;
		}

		snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(6),
			(chip->mpu_port == -1) ? 0x00 :
				0x80 | mpu_port_bits << 5 | mpu_irq_bits << 3,
			0xf8);
	}
__skip_mpu:

	return 0;
}

#ifdef OPTi93X

#define chip_t opti93x_t

static unsigned char snd_opti93x_default_image[32] =
{
	0x00,		/* 00/00 - l_mixout_outctrl */
	0x00,		/* 01/01 - r_mixout_outctrl */
	0x88,		/* 02/02 - l_cd_inctrl */
	0x88,		/* 03/03 - r_cd_inctrl */
	0x88,		/* 04/04 - l_a1/fm_inctrl */
	0x88,		/* 05/05 - r_a1/fm_inctrl */
	0x80,		/* 06/06 - l_dac_inctrl */
	0x80,		/* 07/07 - r_dac_inctrl */
	0x00,		/* 08/08 - ply_dataform_reg */
	0x00,		/* 09/09 - if_conf */
	0x00,		/* 0a/10 - pin_ctrl */
	0x00,		/* 0b/11 - err_init_reg */
	0x0a,		/* 0c/12 - id_reg */
	0x00,		/* 0d/13 - reserved */
	0x00,		/* 0e/14 - ply_upcount_reg */
	0x00,		/* 0f/15 - ply_lowcount_reg */
	0x88,		/* 10/16 - reserved/l_a1_inctrl */
	0x88,		/* 11/17 - reserved/r_a1_inctrl */
	0x88,		/* 12/18 - l_line_inctrl */
	0x88,		/* 13/19 - r_line_inctrl */
	0x88,		/* 14/20 - l_mic_inctrl */
	0x88,		/* 15/21 - r_mic_inctrl */
	0x80,		/* 16/22 - l_out_outctrl */
	0x80,		/* 17/23 - r_out_outctrl */
	0x00,		/* 18/24 - reserved */
	0x00,		/* 19/25 - reserved */
	0x00,		/* 1a/26 - reserved */
	0x00,		/* 1b/27 - reserved */
	0x00,		/* 1c/28 - cap_dataform_reg */
	0x00,		/* 1d/29 - reserved */
	0x00,		/* 1e/30 - cap_upcount_reg */
	0x00		/* 1f/31 - cap_lowcount_reg */
};


static int snd_opti93x_busy_wait(opti93x_t *chip)
{
	int timeout;

	for (timeout = 250; timeout-- > 0; udelay(10))
		if (!(inb(OPTi93X_PORT(chip, INDEX)) & OPTi93X_INIT))
			return 0;

	snd_printk("chip still busy.\n");
	return -EBUSY;
}

static unsigned char snd_opti93x_in(opti93x_t *chip, unsigned char reg)
{
	snd_opti93x_busy_wait(chip);
	outb(chip->mce_bit | (reg & 0x1f), OPTi93X_PORT(chip, INDEX));
	return inb(OPTi93X_PORT(chip, DATA));
}

static void snd_opti93x_out(opti93x_t *chip, unsigned char reg,
			    unsigned char value)
{
	snd_opti93x_busy_wait(chip);
	outb(chip->mce_bit | (reg & 0x1f), OPTi93X_PORT(chip, INDEX));
	outb(value, OPTi93X_PORT(chip, DATA));
}

static void snd_opti93x_out_image(opti93x_t *chip, unsigned char reg,
				  unsigned char value)
{
	snd_opti93x_out(chip, reg, chip->image[reg] = value);
}

static void snd_opti93x_out_mask(opti93x_t *chip, unsigned char reg,
				 unsigned char mask, unsigned char value)
{
	snd_opti93x_out_image(chip, reg,
		(chip->image[reg] & ~mask) | (value & mask));
}


static void snd_opti93x_mce_up(opti93x_t *chip)
{
	snd_opti93x_busy_wait(chip);

	chip->mce_bit = OPTi93X_MCE;
	if (!(inb(OPTi93X_PORT(chip, INDEX)) & OPTi93X_MCE))
		outb(chip->mce_bit, OPTi93X_PORT(chip, INDEX));
}

static void snd_opti93x_mce_down(opti93x_t *chip)
{
	snd_opti93x_busy_wait(chip);

	chip->mce_bit = 0;
	if (inb(OPTi93X_PORT(chip, INDEX)) & OPTi93X_MCE)
		outb(chip->mce_bit, OPTi93X_PORT(chip, INDEX));
}

#define snd_opti93x_mute_reg(chip, reg, mute)	\
	snd_opti93x_out(chip, reg, mute ? 0x80 : chip->image[reg]);

static void snd_opti93x_mute(opti93x_t *chip, int mute)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);

	mute = mute ? 1 : 0;
	if (chip->mute == mute) {
		spin_unlock_irqrestore(&chip->lock, flags);
		return;
	}
	chip->mute = mute;

	snd_opti93x_mute_reg(chip, OPTi93X_CD_LEFT_INPUT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_CD_RIGHT_INPUT, mute);
	switch (chip->hardware) {
	case OPTi9XX_HW_82C930:
		snd_opti93x_mute_reg(chip, OPTi930_AUX_LEFT_INPUT, mute);
		snd_opti93x_mute_reg(chip, OPTi930_AUX_RIGHT_INPUT, mute);
		break;
	case OPTi9XX_HW_82C931:
	case OPTi9XX_HW_82C933:
		snd_opti93x_mute_reg(chip, OPTi931_FM_LEFT_INPUT, mute);
		snd_opti93x_mute_reg(chip, OPTi931_FM_RIGHT_INPUT, mute);
		snd_opti93x_mute_reg(chip, OPTi931_AUX_LEFT_INPUT, mute);
		snd_opti93x_mute_reg(chip, OPTi931_AUX_RIGHT_INPUT, mute);
	}
	snd_opti93x_mute_reg(chip, OPTi93X_DAC_LEFT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_DAC_RIGHT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_LINE_LEFT_INPUT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_LINE_RIGHT_INPUT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_MIC_LEFT_INPUT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_MIC_RIGHT_INPUT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_OUT_LEFT, mute);
	snd_opti93x_mute_reg(chip, OPTi93X_OUT_RIGHT, mute);

	spin_unlock_irqrestore(&chip->lock, flags);
}


static unsigned int snd_opti93x_get_count(unsigned char format,
					  unsigned int size)
{
	switch (format & 0xe0) {
	case OPTi93X_LINEAR_16_LIT:
	case OPTi93X_LINEAR_16_BIG:
		size >>= 1;
		break;
	case OPTi93X_ADPCM_16:
		return size >> 2;
	}
	return (format & OPTi93X_STEREO) ? (size >> 1) : size;
}

unsigned int rates[] = {  5512,  6615,  8000,  9600, 11025, 16000, 18900,
			 22050, 27428, 32000, 33075, 37800, 44100, 48000 };
#define RATES sizeof(rates) / sizeof(rates[0])

#ifdef TARGET_OS2
static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
	RATES,
	rates,
	0,
};
#else
static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
	count: RATES,
	list: rates,
	mask: 0,
};
#endif

unsigned char bits[] = {  0x01,  0x0f,  0x00,  0x0e,  0x03,  0x02,  0x05,
			  0x07,  0x04,  0x06,  0x0d,  0x09,  0x0b,  0x0c};

static unsigned char snd_opti93x_get_freq(unsigned int rate)
{
	int i;

	for (i = 0; i < RATES; i++) {
		if (rate == rates[i])
			return bits[i];
	}
	snd_BUG();
	return bits[RATES-1];
}

static unsigned char snd_opti93x_get_format(opti93x_t *chip,
					    unsigned int format, int channels)
{
	unsigned char retval = OPTi93X_LINEAR_8;

	switch (format) {
	case SNDRV_PCM_FORMAT_MU_LAW:
		retval = OPTi93X_ULAW_8;
		break;
	case SNDRV_PCM_FORMAT_A_LAW:
		retval = OPTi93X_ALAW_8;
		break;
	case SNDRV_PCM_FORMAT_S16_LE:
		retval = OPTi93X_LINEAR_16_LIT;
		break;
	case SNDRV_PCM_FORMAT_S16_BE:
		retval = OPTi93X_LINEAR_16_BIG;
		break;
	case SNDRV_PCM_FORMAT_IMA_ADPCM:
		retval = OPTi93X_ADPCM_16;
	}
	return (channels > 1) ? (retval | OPTi93X_STEREO) : retval;
}


static void snd_opti93x_playback_format(opti93x_t *chip, unsigned char fmt)
{
	unsigned long flags;
	unsigned char mask;

	spin_lock_irqsave(&chip->lock, flags);
	snd_opti93x_mute(chip, 1);

	snd_opti93x_mce_up(chip);
	mask = (chip->mode & OPTi93X_MODE_CAPTURE) ? 0xf0 : 0xff;
	snd_opti93x_out_mask(chip, OPTi93X_PLAY_FORMAT, mask, fmt);
	snd_opti93x_mce_down(chip);

	snd_opti93x_mute(chip, 0);
	spin_unlock_irqrestore(&chip->lock, flags);
}

static void snd_opti93x_capture_format(opti93x_t *chip, unsigned char fmt)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);
	snd_opti93x_mute(chip, 1);

	snd_opti93x_mce_up(chip);
	if (!(chip->mode & OPTi93X_MODE_PLAY))
		snd_opti93x_out_mask(chip, OPTi93X_PLAY_FORMAT, 0x0f, fmt);
	else
		fmt = chip->image[OPTi93X_PLAY_FORMAT] & 0xf0;
	snd_opti93x_out_image(chip, OPTi93X_CAPT_FORMAT, fmt);
	snd_opti93x_mce_down(chip);

	snd_opti93x_mute(chip, 0);
	spin_unlock_irqrestore(&chip->lock, flags);
}


static int snd_opti93x_open(opti93x_t *chip, unsigned int mode)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);

	if (chip->mode & mode) {
		spin_unlock_irqrestore(&chip->lock, flags);
		return -EAGAIN;
	}

	if (!(chip->mode & OPTi93X_MODE_OPEN)) {
		outb(0x00, OPTi93X_PORT(chip, STATUS));
		snd_opti93x_out_mask(chip, OPTi93X_PIN_CTRL,
			OPTi93X_IRQ_ENABLE, OPTi93X_IRQ_ENABLE);
		chip->mode = mode;
	}
	else
		chip->mode |= mode;

	spin_unlock_irqrestore(&chip->lock, flags);
	return 0;
}

static void snd_opti93x_close(opti93x_t *chip, unsigned int mode)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);

	chip->mode &= ~mode;
	if (chip->mode & OPTi93X_MODE_OPEN) {
		spin_unlock_irqrestore(&chip->lock, flags);
		return;
	}

	snd_opti93x_mute(chip, 1);

	outb(0, OPTi93X_PORT(chip, STATUS));
	snd_opti93x_out_mask(chip, OPTi93X_PIN_CTRL, OPTi93X_IRQ_ENABLE,
		~OPTi93X_IRQ_ENABLE);

	snd_opti93x_mce_up(chip);
	snd_opti93x_out_image(chip, OPTi93X_IFACE_CONF, 0x00);
	snd_opti93x_mce_down(chip);
	chip->mode = 0;

	snd_opti93x_mute(chip, 0);
	spin_unlock_irqrestore(&chip->lock, flags);
}

static int snd_opti93x_trigger(snd_pcm_substream_t *substream, 
			       unsigned char what, int cmd)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_STOP:
	{
		unsigned int what = 0;
		snd_pcm_substream_t *s = substream;
		do {
			if (s == chip->playback_substream) {
				what |= OPTi93X_PLAYBACK_ENABLE;
				snd_pcm_trigger_done(s, substream);
			} else if (s == chip->capture_substream) {
				what |= OPTi93X_CAPTURE_ENABLE;
				snd_pcm_trigger_done(s, substream);
			}
			s = s->link_next;
		} while (s != substream);
		spin_lock(&chip->lock);
		if (SNDRV_PCM_TRIGGER_START)
			snd_opti93x_out_mask(chip, OPTi93X_IFACE_CONF, what, what);
		else
			snd_opti93x_out_mask(chip, OPTi93X_IFACE_CONF, what, 0x00);
		spin_unlock(&chip->lock);
		break;
	}
	default:
		return -EINVAL;
	}
	return 0;
}

static int snd_opti93x_playback_trigger(snd_pcm_substream_t *substream, int cmd)
{
	return snd_opti93x_trigger(substream,
				   OPTi93X_PLAYBACK_ENABLE, cmd);
}

static int snd_opti93x_capture_trigger(snd_pcm_substream_t * substream, int cmd)
{
	return snd_opti93x_trigger(substream,
				   OPTi93X_CAPTURE_ENABLE, cmd);
}

static int snd_opti93x_hw_params(snd_pcm_substream_t * substream,
				 snd_pcm_hw_params_t * hw_params)
{
	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}


static int snd_opti93x_hw_free(snd_pcm_substream_t * substream)
{
	snd_pcm_lib_free_pages(substream);
	return 0;
}


static int snd_opti93x_playback_prepare(snd_pcm_substream_t * substream)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	unsigned long flags;
	unsigned char format;
	unsigned int count = snd_pcm_lib_period_bytes(substream);
	unsigned int size = snd_pcm_lib_buffer_bytes(substream);

	spin_lock_irqsave(&chip->lock, flags);

	chip->p_dma_size = size;
	snd_opti93x_out_mask(chip, OPTi93X_IFACE_CONF,
		OPTi93X_PLAYBACK_ENABLE | OPTi93X_PLAYBACK_PIO,
		~(OPTi93X_PLAYBACK_ENABLE | OPTi93X_PLAYBACK_PIO));

	snd_dma_program(chip->dma1, runtime->dma_area, size,
		DMA_MODE_WRITE | DMA_AUTOINIT);

	format = snd_opti93x_get_freq(runtime->rate);
	format |= snd_opti93x_get_format(chip, runtime->format,
		runtime->channels);
	snd_opti93x_playback_format(chip, format);
	format = chip->image[OPTi93X_PLAY_FORMAT];

	count = snd_opti93x_get_count(format, count) - 1;
	snd_opti93x_out_image(chip, OPTi93X_PLAY_LWR_CNT, count);
	snd_opti93x_out_image(chip, OPTi93X_PLAY_UPR_CNT, count >> 8);

	spin_unlock_irqrestore(&chip->lock, flags);
	return 0;
}

static int snd_opti93x_capture_prepare(snd_pcm_substream_t *substream)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	unsigned long flags;
	unsigned char format;
	unsigned int count = snd_pcm_lib_period_bytes(substream);
	unsigned int size = snd_pcm_lib_buffer_bytes(substream);

	spin_lock_irqsave(&chip->lock, flags);

	chip->c_dma_size = size;
	snd_opti93x_out_mask(chip, OPTi93X_IFACE_CONF,
		OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO,
		(unsigned char)~(OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO));

	snd_dma_program(chip->dma2, runtime->dma_area, size,
		DMA_MODE_READ | DMA_AUTOINIT);

	format = snd_opti93x_get_freq(runtime->rate);
	format |= snd_opti93x_get_format(chip, runtime->format,
		runtime->channels);
	snd_opti93x_capture_format(chip, format);
	format = chip->image[OPTi93X_CAPT_FORMAT];

	count = snd_opti93x_get_count(format, count) - 1;
	snd_opti93x_out_image(chip, OPTi93X_CAPT_LWR_CNT, count);
	snd_opti93x_out_image(chip, OPTi93X_CAPT_UPR_CNT, count >> 8);

	spin_unlock_irqrestore(&chip->lock, flags);
	return 0;
}

static snd_pcm_uframes_t snd_opti93x_playback_pointer(snd_pcm_substream_t *substream)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);
	size_t ptr;

	if (!(chip->image[OPTi93X_IFACE_CONF] & OPTi93X_PLAYBACK_ENABLE))
		return 0;

	ptr = chip->p_dma_size - snd_dma_residue(chip->dma1);
	return bytes_to_frames(substream->runtime, ptr);
}

static snd_pcm_uframes_t snd_opti93x_capture_pointer(snd_pcm_substream_t *substream)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);
	size_t ptr;
	
	if (!(chip->image[OPTi93X_IFACE_CONF] & OPTi93X_CAPTURE_ENABLE))
		return 0;

	ptr = chip->c_dma_size - snd_dma_residue(chip->dma2);
	return bytes_to_frames(substream->runtime, ptr);
}


static void snd_opti93x_overrange(opti93x_t *chip)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);

	if (snd_opti93x_in(chip, OPTi93X_ERR_INIT) & (0x08 | 0x02))
		chip->capture_substream->runtime->overrange++;

	spin_unlock_irqrestore(&chip->lock, flags);
}

void snd_opti93x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	opti93x_t *codec = snd_magic_cast(opti93x_t, dev_id, return);
	unsigned char status;

	status = snd_opti9xx_read(codec->chip, OPTi9XX_MC_REG(11));
	if ((status & OPTi93X_IRQ_PLAYBACK) && codec->playback_substream)
		snd_pcm_period_elapsed(codec->playback_substream);
	if ((status & OPTi93X_IRQ_CAPTURE) && codec->capture_substream) {
		snd_opti93x_overrange(codec);
		snd_pcm_period_elapsed(codec->capture_substream);
	}
	outb(0x00, OPTi93X_PORT(codec, STATUS));
}


#ifdef TARGET_OS2
static snd_pcm_hardware_t snd_opti93x_playback = {
/*	info:		  */	(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
/*	formats:	  */	(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
/*	rates:		  */	SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
/*	rate_min:	  */	5512,
/*	rate_max:	  */	48000,
/*	channels_min:	  */	1,
/*	channels_max:	  */	2,
/*	buffer_bytes_max: */	(128*1024),
/*	period_bytes_min: */	64,
/*	period_bytes_max: */	(128*1024),
/*	periods_min:	  */	1,
/*	periods_max:	  */	1024,
/*	fifo_size:	  */	0,
};

static snd_pcm_hardware_t snd_opti93x_capture = {
/*	info:		  */	(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
/*	formats:	  */	(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
/*	rates:		  */	SNDRV_PCM_RATE_8000_48000,
/*	rate_min:	  */	5512,
/*	rate_max:	  */	48000,
/*	channels_min:	  */	1,
/*	channels_max:	  */	2,
/*	buffer_bytes_max: */	(128*1024),
/*	period_bytes_min: */	64,
/*	period_bytes_max: */	(128*1024),
/*	periods_min:	  */	1,
/*	periods_max:	  */	1024,
/*	fifo_size:	  */	0,
};
#else
static snd_pcm_hardware_t snd_opti93x_playback = {
	info:			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
	formats:		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
	rates:			SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
	rate_min:		5512,
	rate_max:		48000,
	channels_min:		1,
	channels_max:		2,
	buffer_bytes_max:	(128*1024),
	period_bytes_min:	64,
	period_bytes_max:	(128*1024),
	periods_min:		1,
	periods_max:		1024,
	fifo_size:		0,
};

static snd_pcm_hardware_t snd_opti93x_capture = {
	info:			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
	formats:		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
	rates:			SNDRV_PCM_RATE_8000_48000,
	rate_min:		5512,
	rate_max:		48000,
	channels_min:		1,
	channels_max:		2,
	buffer_bytes_max:	(128*1024),
	period_bytes_min:	64,
	period_bytes_max:	(128*1024),
	periods_min:		1,
	periods_max:		1024,
	fifo_size:		0,
};
#endif

static int snd_opti93x_playback_open(snd_pcm_substream_t *substream)
{
	int error;
	opti93x_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;

	if ((error = snd_opti93x_open(chip, OPTi93X_MODE_PLAY)) < 0)
		return error;
	snd_pcm_set_sync(substream);
	chip->playback_substream = substream;
	runtime->hw = snd_opti93x_playback;
	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
	return error;
}

static int snd_opti93x_capture_open(snd_pcm_substream_t *substream)
{
	int error;
	opti93x_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;

	if ((error = snd_opti93x_open(chip, OPTi93X_MODE_CAPTURE)) < 0)
		return error;
	runtime->hw = snd_opti93x_capture;
	snd_pcm_set_sync(substream);
	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
	return error;
}

static int snd_opti93x_playback_close(snd_pcm_substream_t *substream)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);

	chip->playback_substream = NULL;
	snd_opti93x_close(chip, OPTi93X_MODE_PLAY);
	return 0;
}

static int snd_opti93x_capture_close(snd_pcm_substream_t *substream)
{
	opti93x_t *chip = snd_pcm_substream_chip(substream);

	chip->capture_substream = NULL;
	snd_opti93x_close(chip, OPTi93X_MODE_CAPTURE);
	return 0;
}


static void snd_opti93x_init(opti93x_t *chip)
{
	unsigned long flags;
	int i;

	spin_lock_irqsave(&chip->lock, flags);
	snd_opti93x_mce_up(chip);

	for (i = 0; i < 32; i++)
		snd_opti93x_out_image(chip, i, snd_opti93x_default_image[i]);

	snd_opti93x_mce_down(chip);
	spin_unlock_irqrestore(&chip->lock, flags);
}

static int snd_opti93x_probe(opti93x_t *chip)
{
	unsigned long flags;
	unsigned char val;

	spin_lock_irqsave(&chip->lock, flags);
	val = snd_opti93x_in(chip, OPTi93X_ID) & 0x0f;
	spin_unlock_irqrestore(&chip->lock, flags);

	return (val == 0x0a) ? 0 : -ENODEV;
}

static int snd_opti93x_free(opti93x_t *chip)
{
	if (chip->res_port)
		release_resource(chip->res_port);
	if (chip->dma1 >= 0) {
		disable_dma(chip->dma1);
		free_dma(chip->dma1);
	}
	if (chip->dma2 >= 0) {
		disable_dma(chip->dma2);
		free_dma(chip->dma2);
	}
	snd_magic_kfree(chip);
	return 0;
}

static int snd_opti93x_dev_free(snd_device_t *device)
{
	opti93x_t *chip = snd_magic_cast(opti93x_t, device->device_data, return -ENXIO);
	return snd_opti93x_free(chip);
}

static const char *snd_opti93x_chip_id(opti93x_t *codec)
{
	switch (codec->hardware) {
	case OPTi9XX_HW_82C930: return "82C930";
	case OPTi9XX_HW_82C931: return "82C931";
	case OPTi9XX_HW_82C933: return "82C933";
	default:		return "???";
	}
}

int snd_opti93x_create(snd_card_t *card, opti9xx_t *chip,
		       int dma1, int dma2,
		       opti93x_t **rcodec)
{
#ifdef TARGET_OS2
	static snd_device_ops_t ops = {
		snd_opti93x_dev_free,0, 0
	};
#else
	static snd_device_ops_t ops = {
		dev_free:	snd_opti93x_dev_free,
	};
#endif
	int error;
	opti93x_t *codec;

	*rcodec = NULL;
	codec = snd_magic_kcalloc(opti93x_t, 0, GFP_KERNEL);
	if (codec == NULL)
		return -ENOMEM;
	codec->irq = -1;
	codec->dma1 = -1;
	codec->dma2 = -1;

	if ((codec->res_port = request_region(chip->wss_base + 4, 4, "OPTI93x CODEC")) == NULL) {
		snd_opti93x_free(codec);
		return -EBUSY;
	}
	if (request_dma(dma1, "OPTI93x - 1")) {
		snd_opti93x_free(codec);
		return -EBUSY;
	}
	codec->dma1 = chip->dma1;
	if (request_dma(dma2, "OPTI93x - 2")) {
		snd_opti93x_free(codec);
		return -EBUSY;
	}
	codec->dma2 = chip->dma2;

	codec->card = card;
	codec->port = chip->wss_base + 4;
	codec->irq = chip->irq;

	spin_lock_init(&codec->lock);
	codec->hardware = chip->hardware;
	codec->chip = chip;

	if ((error = snd_opti93x_probe(codec))) {
		snd_opti93x_free(codec);
		return error;
	}

	snd_opti93x_init(codec);

	/* Register device */
	if ((error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		snd_opti93x_free(codec);
		return error;
	}

	*rcodec = codec;
	return 0;
}

#ifdef TARGET_OS2
static snd_pcm_ops_t snd_opti93x_playback_ops = {
/*	open:	  */	snd_opti93x_playback_open,
/*	close:	  */	snd_opti93x_playback_close,
/*	ioctl:	  */	snd_pcm_lib_ioctl,
/*	hw_params:*/	snd_opti93x_hw_params,
/*	hw_free:  */	snd_opti93x_hw_free,
/*	prepare:  */	snd_opti93x_playback_prepare,
/*	trigger:  */	snd_opti93x_playback_trigger,
/*	pointer:  */	snd_opti93x_playback_pointer,
        0, 0
};

static snd_pcm_ops_t snd_opti93x_capture_ops = {
/*	open:	  */	snd_opti93x_capture_open,
/*	close:	  */	snd_opti93x_capture_close,
/*	ioctl:	  */	snd_pcm_lib_ioctl,
/*	hw_params:*/	snd_opti93x_hw_params,
/*	hw_free:  */	snd_opti93x_hw_free,
/*	prepare:  */	snd_opti93x_capture_prepare,
/*	trigger:  */	snd_opti93x_capture_trigger,
/*	pointer:  */	snd_opti93x_capture_pointer,
        0, 0
}; 
#else
static snd_pcm_ops_t snd_opti93x_playback_ops = {
	open:		snd_opti93x_playback_open,
	close:		snd_opti93x_playback_close,
	ioctl:		snd_pcm_lib_ioctl,
	hw_params:	snd_opti93x_hw_params,
	hw_free:	snd_opti93x_hw_free,
	prepare:	snd_opti93x_playback_prepare,
	trigger:	snd_opti93x_playback_trigger,
	pointer:	snd_opti93x_playback_pointer,
};

static snd_pcm_ops_t snd_opti93x_capture_ops = {
	open:		snd_opti93x_capture_open,
	close:		snd_opti93x_capture_close,
	ioctl:		snd_pcm_lib_ioctl,
	hw_params:	snd_opti93x_hw_params,
	hw_free:	snd_opti93x_hw_free,
	prepare:	snd_opti93x_capture_prepare,
	trigger:	snd_opti93x_capture_trigger,
	pointer:	snd_opti93x_capture_pointer,
};
#endif

static void snd_opti93x_pcm_free(snd_pcm_t *pcm)
{
	opti93x_t *codec = snd_magic_cast(opti93x_t, pcm->private_data, return);
	codec->pcm = NULL;
	snd_pcm_lib_preallocate_free_for_all(pcm);
}

int snd_opti93x_pcm(opti93x_t *codec, int device, snd_pcm_t **rpcm)
{
	int error;
	snd_pcm_t *pcm;

	if ((error = snd_pcm_new(codec->card, "OPTi 82C93X", device, 1, 1, &pcm)))
		return error;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_opti93x_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_opti93x_capture_ops);

	pcm->private_data = codec;
	pcm->private_free = snd_opti93x_pcm_free;
	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;

	strcpy(pcm->name, snd_opti93x_chip_id(codec));

	snd_pcm_lib_preallocate_pages_for_all(pcm, 64*1024, codec->dma1 > 3 || codec->dma2 > 3 ? 128*1024 : 64*1024, GFP_KERNEL|GFP_DMA);

	codec->pcm = pcm;
	if (rpcm)
		*rpcm = pcm;
	return 0;
}

/*
 *  MIXER part
 */

static int snd_opti93x_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[4] = {
		"Line1", "Aux", "Mic", "Mix"
	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 2;
	uinfo->value.enumerated.items = 4;
	if (uinfo->value.enumerated.item > 3)
		uinfo->value.enumerated.item = 3;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_opti93x_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	opti93x_t *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	
	spin_lock_irqsave(&chip->lock, flags);
	ucontrol->value.enumerated.item[0] = (chip->image[OPTi93X_MIXOUT_LEFT] & OPTi93X_MIXOUT_MIXER) >> 6;
	ucontrol->value.enumerated.item[1] = (chip->image[OPTi93X_MIXOUT_RIGHT] & OPTi93X_MIXOUT_MIXER) >> 6;
	spin_unlock_irqrestore(&chip->lock, flags);
	return 0;
}

static int snd_opti93x_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	opti93x_t *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	unsigned short left, right;
	int change;
	
	if (ucontrol->value.enumerated.item[0] > 3 ||
	    ucontrol->value.enumerated.item[1] > 3)
		return -EINVAL;
	left = ucontrol->value.enumerated.item[0] << 6;
	right = ucontrol->value.enumerated.item[1] << 6;
	spin_lock_irqsave(&chip->lock, flags);
	left = (chip->image[OPTi93X_MIXOUT_LEFT] & ~OPTi93X_MIXOUT_MIXER) | left;
	right = (chip->image[OPTi93X_MIXOUT_RIGHT] & ~OPTi93X_MIXOUT_MIXER) | right;
	change = left != chip->image[OPTi93X_MIXOUT_LEFT] ||
	         right != chip->image[OPTi93X_MIXOUT_RIGHT];
	snd_opti93x_out(chip, OPTi93X_MIXOUT_LEFT, left);
	snd_opti93x_out(chip, OPTi93X_MIXOUT_RIGHT, right);
	spin_unlock_irqrestore(&chip->lock, flags);
	return change;
}

#if 0

#ifdef TARGET_OS2
#define OPTi93X_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ SNDRV_CTL_ELEM_IFACE_MIXER, 0, 0, xname, xindex, \
  0, 0, snd_opti93x_info_single, \
  snd_opti93x_get_single, snd_opti93x_put_single, \
  reg | (shift << 8) | (mask << 16) | (invert << 24) }
#else
#define OPTi93X_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ iface: SNDRV_CTL_ELEM_IFACE_MIXER, name: xname, index: xindex, \
  info: snd_opti93x_info_single, \
  get: snd_opti93x_get_single, put: snd_opti93x_put_single, \
  private_value: reg | (shift << 8) | (mask << 16) | (invert << 24) }
#endif

static int snd_opti93x_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	int mask = (kcontrol->private_value >> 16) & 0xff;

	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_opti93x_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	opti93x_t *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int reg = kcontrol->private_value & 0xff;
	int shift = (kcontrol->private_value >> 8) & 0xff;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;
	
	spin_lock_irqsave(&chip->lock, flags);
	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
	spin_unlock_irqrestore(&chip->lock, flags);
	if (invert)
		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
	return 0;
}

static int snd_opti93x_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	opti93x_t *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int reg = kcontrol->private_value & 0xff;
	int shift = (kcontrol->private_value >> 8) & 0xff;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;
	int change;
	unsigned short val;
	
	val = (ucontrol->value.integer.value[0] & mask);
	if (invert)
		val = mask - val;
	val <<= shift;
	spin_lock_irqsave(&chip->lock, flags);
	val = (chip->image[reg] & ~(mask << shift)) | val;
	change = val != chip->image[reg];
	snd_opti93x_out(chip, reg, val);
	spin_unlock_irqrestore(&chip->lock, flags);
	return change;
}

#endif /* single */

#ifdef TARGET_OS2
#define OPTi93X_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ SNDRV_CTL_ELEM_IFACE_MIXER, 0, 0, xname, xindex, \
  0, 0, snd_opti93x_info_double, \
  snd_opti93x_get_double, snd_opti93x_put_double, \
  left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
#else
#define OPTi93X_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ iface: SNDRV_CTL_ELEM_IFACE_MIXER, name: xname, index: xindex, \
  info: snd_opti93x_info_double, \
  get: snd_opti93x_get_double, put: snd_opti93x_put_double, \
  private_value: left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
#endif

#define OPTi93X_DOUBLE_INVERT_INVERT(xctl) \
	do { xctl.private_value ^= 22; } while (0)
#define OPTi93X_DOUBLE_CHANGE_REGS(xctl, left_reg, right_reg) \
	do { xctl.private_value &= ~0x0000ffff; \
	     xctl.private_value |= left_reg | (right_reg << 8); } while (0)

static int snd_opti93x_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	int mask = (kcontrol->private_value >> 16) & 0xff;

	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_opti93x_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	opti93x_t *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int left_reg = kcontrol->private_value & 0xff;
	int right_reg = (kcontrol->private_value >> 8) & 0xff;
	int shift_left = (kcontrol->private_value >> 16) & 0x07;
	int shift_right = (kcontrol->private_value >> 19) & 0x07;
	int mask = (kcontrol->private_value >> 24) & 0xff;
	int invert = (kcontrol->private_value >> 22) & 1;
	
	spin_lock_irqsave(&chip->lock, flags);
	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
	ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
	spin_unlock_irqrestore(&chip->lock, flags);
	if (invert) {
		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
	}
	return 0;
}

static int snd_opti93x_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	opti93x_t *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int left_reg = kcontrol->private_value & 0xff;
	int right_reg = (kcontrol->private_value >> 8) & 0xff;
	int shift_left = (kcontrol->private_value >> 16) & 0x07;
	int shift_right = (kcontrol->private_value >> 19) & 0x07;
	int mask = (kcontrol->private_value >> 24) & 0xff;
	int invert = (kcontrol->private_value >> 22) & 1;
	int change;
	unsigned short val1, val2;
	
	val1 = ucontrol->value.integer.value[0] & mask;
	val2 = ucontrol->value.integer.value[1] & mask;
	if (invert) {
		val1 = mask - val1;
		val2 = mask - val2;
	}
	val1 <<= shift_left;
	val2 <<= shift_right;
	spin_lock_irqsave(&chip->lock, flags);
	val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
	val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
	change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
	snd_opti93x_out(chip, left_reg, val1);
	snd_opti93x_out(chip, right_reg, val1);
	spin_unlock_irqrestore(&chip->lock, flags);
	return change;
}

#define OPTi93X_CONTROLS (sizeof(snd_opti93x_controls)/sizeof(snd_kcontrol_new_t))

static snd_kcontrol_new_t snd_opti93x_controls[] = {
OPTi93X_DOUBLE("Master Playback Switch", 0, OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Master Playback Volume", 0, OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 0, 0, 31, 1),
OPTi93X_DOUBLE("PCM Playback Switch", 0, OPTi93X_DAC_LEFT, OPTi93X_DAC_RIGHT, 7, 7, 1, 1),
OPTi93X_DOUBLE("PCM Playback Volume", 0, OPTi93X_DAC_LEFT, OPTi93X_DAC_RIGHT, 0, 0, 31, 0),
OPTi93X_DOUBLE("FM Playback Switch", 0, OPTi931_FM_LEFT_INPUT, OPTi931_FM_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("FM Playback Volume", 0, OPTi931_FM_LEFT_INPUT, OPTi931_FM_RIGHT_INPUT, 0, 0, 15, 1),
OPTi93X_DOUBLE("Line Playback Switch", 0, OPTi93X_LINE_LEFT_INPUT, OPTi93X_LINE_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Line Playback Volume", 0, OPTi93X_LINE_LEFT_INPUT, OPTi93X_LINE_RIGHT_INPUT, 0, 0, 15, 1),
OPTi93X_DOUBLE("Mic Playback Switch", 0, OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Mic Playback Volume", 0, OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 0, 0, 15, 1),
OPTi93X_DOUBLE("Mic Boost", 0, OPTi93X_MIXOUT_LEFT, OPTi93X_MIXOUT_RIGHT, 5, 5, 1, 1),
OPTi93X_DOUBLE("CD Playback Switch", 0, OPTi93X_CD_LEFT_INPUT, OPTi93X_CD_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("CD Playback Volume", 0, OPTi93X_CD_LEFT_INPUT, OPTi93X_CD_RIGHT_INPUT, 0, 0, 15, 1),
OPTi93X_DOUBLE("Aux Playback Switch", 0, OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Aux Playback Volume", 0, OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 0, 0, 15, 1),
OPTi93X_DOUBLE("Capture Volume", 0, OPTi93X_MIXOUT_LEFT, OPTi93X_MIXOUT_RIGHT, 0, 0, 15, 0),
{
#ifdef TARGET_OS2
	SNDRV_CTL_ELEM_IFACE_MIXER, 0, 0, 
	"Capture Source", 0, 0, 0,
	snd_opti93x_info_mux,
	snd_opti93x_get_mux,
	snd_opti93x_put_mux,
#else
	iface: SNDRV_CTL_ELEM_IFACE_MIXER,
	name: "Capture Source",
	info: snd_opti93x_info_mux,
	get: snd_opti93x_get_mux,
	put: snd_opti93x_put_mux,
#endif
}
};
                                        
int snd_opti93x_mixer(opti93x_t *chip)
{
	snd_card_t *card;
	snd_kcontrol_new_t knew;
	int err, idx;

	snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
	card = chip->card;

	strcpy(card->mixername, snd_opti93x_chip_id(chip));

	for (idx = 0; idx < OPTi93X_CONTROLS; idx++) {
		knew = snd_opti93x_controls[idx];
		if (chip->hardware == OPTi9XX_HW_82C930) {
			if (strstr(knew.name, "FM"))	/* skip FM controls */
				continue;
			else if (strcmp(knew.name, "Mic Playback Volume"))
				OPTi93X_DOUBLE_INVERT_INVERT(knew);
			else if (strstr(knew.name, "Aux"))
				OPTi93X_DOUBLE_CHANGE_REGS(knew, OPTi930_AUX_LEFT_INPUT, OPTi930_AUX_RIGHT_INPUT);
			else if (strcmp(knew.name, "PCM Playback Volume"))
				OPTi93X_DOUBLE_INVERT_INVERT(knew);
			else if (strcmp(knew.name, "Master Playback Volume"))
				OPTi93X_DOUBLE_INVERT_INVERT(knew);
		}
		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_opti93x_controls[idx], chip))) < 0)
			return err;
	}
	return 0;
}

#endif /* OPTi93X */

static int __init snd_card_opti9xx_detect(snd_card_t *card, opti9xx_t *chip)
{
	int i, err;
	static int opti9xx_mc_size[] = {7, 7, 10, 10, 2, 2, 2};

#ifndef OPTi93X
	for (i = OPTi9XX_HW_82C928; i < OPTi9XX_HW_82C930; i++) {
		unsigned char value;

		if ((err = snd_opti9xx_init(chip, i)) < 0)
			return err;
		chip->mc_base_size = opti9xx_mc_size[i];
		if (check_region(chip->mc_base, chip->mc_base_size))
			continue;

		value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(1));
		if ((value != 0xff) && (value != inb(chip->mc_base + 1)))
			if (value == snd_opti9xx_read(chip, OPTi9XX_MC_REG(1)))
				return 1;
	}
#else	/* OPTi93X */
	for (i = OPTi9XX_HW_82C931; i >= OPTi9XX_HW_82C930; i--) {
		unsigned long flags;
		unsigned char value;

		if ((err = snd_opti9xx_init(chip, i)) < 0)
			return err;
		chip->mc_base_size = opti9xx_mc_size[i];
		if (check_region(chip->mc_base, chip->mc_base_size))
			continue;

		spin_lock_irqsave(&chip->lock, flags);
		outb(chip->password, chip->mc_base + chip->pwd_reg);
		outb(((chip->mc_indir_index & (1 << 8)) >> 4) |
			((chip->mc_indir_index & 0xf0) >> 4), chip->mc_base);
		spin_unlock_irqrestore(&chip->lock, flags);

		value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(7));
		snd_opti9xx_write(chip, OPTi9XX_MC_REG(7), 0xff - value);
		if (snd_opti9xx_read(chip, OPTi9XX_MC_REG(7)) == 0xff - value)
			return 1;
	}
#endif	/* OPTi93X */

	return -ENODEV;
}

#ifdef __ISAPNP__
static int __init snd_card_opti9xx_isapnp(opti9xx_t *chip)
{
	struct isapnp_dev *pdev = NULL;
	const struct isapnp_card_id *pid = snd_card_opti9xx_pnpids-1;
	static struct isapnp_card *card = NULL;

      __again:
	while (1) {
		pid++;
		if (pid->card_vendor == 0)
			return -ENODEV;
		if ((card = isapnp_find_card(pid->card_vendor, pid->card_device, card)))
			break;
	}
	if (card == NULL)
		return -ENODEV;

	chip->dev = isapnp_find_dev(card, pid->devs[0].vendor, pid->devs[0].function, NULL);
	if (chip->dev == NULL)
		goto __again;

	chip->devmpu = isapnp_find_dev(card, pid->devs[1].vendor, pid->devs[1].function, NULL);

	pdev = chip->dev;
	if (pdev->prepare(pdev) < 0)
		return -EAGAIN;

#ifdef OPTi93X
	if (snd_port != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[0], snd_port + 4, 4);
#else
	if ((pid->card_device != ISAPNP_DEVICE(0x0924)) && (snd_port != SNDRV_AUTO_PORT))
		isapnp_resource_change(&pdev->resource[1], snd_port, 4);
#endif	/* OPTi93X */
	if (snd_irq != SNDRV_AUTO_IRQ)
		isapnp_resource_change(&pdev->irq_resource[0], snd_irq, 1);
	if (snd_dma1 != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[0], snd_dma1, 1);
#if defined(CS4231) || defined(OPTi93X)
	if (snd_dma2 != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[1], snd_dma2, 1);
#endif	/* CS4231 || OPTi93X */
	if (snd_fm_port != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[1], snd_fm_port, 4);

	if (pdev->activate(pdev) < 0) {
		snd_printk("AUDIO isapnp configure failure\n");
		return -EBUSY;
	}

#ifdef OPTi93X
	snd_port = pdev->resource[0].start - 4;
	snd_fm_port = pdev->resource[1].start;
#else
	if (pid->card_device != ISAPNP_DEVICE(0x0924))
		snd_port = pdev->resource[1].start;
	snd_fm_port = pdev->resource[2].start;
#endif	/* OPTi93X */
	snd_irq = pdev->irq_resource[0].start;
	snd_dma1 = pdev->dma_resource[0].start;
#if defined(CS4231) || defined(OPTi93X)
	snd_dma2 = pdev->dma_resource[1].start;
#endif	/* CS4231 || OPTi93X */

	pdev = chip->devmpu;
	if (pdev == NULL || pdev->prepare(pdev) < 0) {
		snd_mpu_port = -1;
		chip->devmpu = NULL;
		return pid->card_device;
	}

	if (snd_mpu_port != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[0], snd_mpu_port, 2);
	if (snd_mpu_irq != SNDRV_AUTO_IRQ)
		isapnp_resource_change(&pdev->irq_resource[0], snd_mpu_irq, 1);

	if (pdev->activate(pdev) < 0) {
		snd_printk("MPU-401 isapnp configure failure\n");
		snd_mpu_port = -1;
		chip->devmpu = NULL;
	} else {
		snd_mpu_port = pdev->resource[0].start;
		snd_mpu_irq = pdev->irq_resource[0].start;
	}
	return pid->card_device;
}

static void snd_card_opti9xx_deactivate(opti9xx_t *chip)
{
	if (chip->dev)
		chip->dev->deactivate(chip->dev);
	if (chip->devmpu)
		chip->devmpu->deactivate(chip->devmpu);
}
#endif	/* __ISAPNP__ */

#if 0
static int __init snd_card_opti9xx_resources(struct snd_card_opti9xx *chip,
					     snd_card_t *card)
{
	int error, i, pnp = 0;

#ifdef __ISAPNP__
	pnp = chip->dev != NULL;
#endif	/* __ISAPNP__ */

#ifndef OPTi93X
	if (chip->chip->hardware == OPTi9XX_HW_82C928)
		snd_mpu_port = -1;
#endif	/* OPTi93X */
	error = 0;
	if (!pnp && (snd_mpu_port == SNDRV_DEFAULT_PORT1)) {
		for (i = 0; possible_mpu_ports[i] != -1; i++)
			if (!snd_register_ioport(card, possible_mpu_ports[i], 2,
					DRIVER_NAME" - MPU-401", NULL)) {
				snd_mpu_port = possible_mpu_ports[i];
				break;
			}
		if (snd_mpu_port == SNDRV_DEFAULT_PORT1)
			error = -EBUSY;
	}
	else
		error = (snd_mpu_port == -1) ? -ENODEV :
			snd_register_ioport(card, snd_mpu_port, 2,
			DRIVER_NAME" - MPU-401", NULL);
	if (error)
		chip->chip->mpu_port = -1;
	else if (pnp && (snd_irq == snd_mpu_irq))
		chip->chip->mpu_irq = snd_mpu_irq;
	else if (!snd_register_interrupt(card,
			DRIVER_NAME" - MPU-401",
			snd_mpu_irq, SNDRV_IRQ_TYPE_ISA,
			snd_card_opti9xx_mpu_interrupt, chip,
			pnp ? no_alternatives : possible_mpu_irqs,
			&chip->mpuirqptr)) {
		chip->chip->mpu_port = snd_mpu_port;
		chip->chip->mpu_irq = chip->mpuirqptr->irq;
	}
	else
		chip->chip->mpu_port = -1;

	if (!pnp && (snd_port == SNDRV_DEFAULT_PORT1)) {
		for (i = 0; possible_ports[i] != -1; i++)
			if (!snd_register_ioport(card, possible_ports[i], 8,
					DRIVER_NAME" - WSS", NULL)) {
				snd_port = possible_ports[i];
				break;
			}
		if (snd_port == SNDRV_DEFAULT_PORT1)
			return -EBUSY;
	}
	else if ((error = snd_register_ioport(card, snd_port, 8,
			DRIVER_NAME" - WSS", NULL)) < 0)
		return error;
	chip->chip->wss_base = snd_port;
	if ((error = snd_register_interrupt(card, DRIVER_NAME" - WSS",
			snd_irq, SNDRV_IRQ_TYPE_ISA,
			snd_card_opti9xx_interrupt, chip,
			pnp ? no_alternatives : possible_irqs,
			&chip->irqptr)) < 0)
		return error;
	chip->chip->irq = chip->irqptr->irq;
	if ((error = snd_register_dma_channel(card,
#if defined(CS4231) || defined(OPTi93X)
			DRIVER_NAME" - WSS playback",
#else
			DRIVER_NAME" - WSS",
#endif	/* CS4231 || OPTi93X */
			snd_dma1, SNDRV_DMA_TYPE_ISA, snd_dma1_size,
			pnp ? no_alternatives : possible_dma1s,
			&chip->dma1ptr)) < 0)
		return error;
	chip->chip->dma1 = chip->dma1ptr->dma;
#if defined(CS4231) || defined(OPTi93X)
	if ((error = snd_register_dma_channel(card, DRIVER_NAME" - WSS capture",
			snd_dma2, SNDRV_DMA_TYPE_ISA, snd_dma2_size,
			pnp ? no_alternatives :
				possible_dma2s[chip->dma1ptr->dma],
			&chip->dma2ptr)) < 0)
		return error;
	chip->chip->dma2 = chip->dma2ptr->dma;
#endif	/* CS4231 || OPTi93X */

	if (snd_register_ioport(card,
			pnp ? snd_fm_port : snd_fm_port = 0x388, 4,
			DRIVER_NAME" - OPL", NULL) < 0)
		snd_fm_port = -1;
	chip->chip->fm_port = snd_fm_port;

	return 0;
}
#endif

static void snd_card_opti9xx_free(snd_card_t *card)
{
	opti9xx_t *chip = (opti9xx_t *)card->private_data;
        
	if (chip) {
#ifdef __ISAPNP__
		snd_card_opti9xx_deactivate(chip);
#endif	/* __ISAPNP__ */
		if (chip->res_mc_base)
			release_resource(chip->res_mc_base);
	}
}

static int __init snd_card_opti9xx_probe(void)
{
	static long possible_ports[] = {0x530, 0xe80, 0xf40, 0x604, -1};
	static long possible_mpu_ports[] = {0x300, 0x310, 0x320, 0x310, -1};
#ifdef OPTi93X
	static int possible_irqs[] = {5, 9, 10, 11, 7, -1};
#else
	static int possible_irqs[] = {9, 10, 11, 7, -1};
#endif	/* OPTi93X */
	static int possible_mpu_irqs[] = {5, 9, 10, 7, -1};
	static int possible_dma1s[] = {3, 1, 0, -1};
#if defined(CS4231) || defined(OPTi93X)
	static int possible_dma2s[][2] = {{1,-1}, {0,-1}, {-1,-1}, {0,-1}};
#endif	/* CS4231 || OPTi93X */
	int error;
	opti9xx_t *chip;
#if defined(OPTi93X)
	opti93x_t *codec;
#elif defined(CS4231)
	cs4231_t *codec;
	snd_timer_t *timer;
#else
	ad1848_t *codec;
#endif
	snd_card_t *card;
	snd_pcm_t *pcm;
	snd_rawmidi_t *rmidi;
	snd_hwdep_t *synth;
#ifdef __ISAPNP__
	int hw;
#endif	/* __ISAPNP__ */

	if (!(card = snd_card_new(snd_index, snd_id, THIS_MODULE,
				  sizeof(opti9xx_t))))
		return -ENOMEM;
	card->private_free = snd_card_opti9xx_free;
	chip = (opti9xx_t *)card->private_data;

#ifdef __ISAPNP__
	if (snd_isapnp && (hw = snd_card_opti9xx_isapnp(chip)) > 0) {
		switch (hw) {
		case ISAPNP_DEVICE(0x0924):
			hw = OPTi9XX_HW_82C924;
			break;
		case ISAPNP_DEVICE(0x0925):
			hw = OPTi9XX_HW_82C925;
			break;
		case ISAPNP_DEVICE(0x0931):
			hw = OPTi9XX_HW_82C931;
			break;
		default:
			snd_card_free(card);
			return -ENODEV;
		}

		if ((error = snd_opti9xx_init(chip, hw))) {
			snd_card_free(card);
			return error;
		}
		if (hw <= OPTi9XX_HW_82C930)
			chip->mc_base -= 0x80;
	} else {
#endif	/* __ISAPNP__ */
		if ((error = snd_card_opti9xx_detect(card, chip)) < 0) {
			snd_card_free(card);
			return error;
		}
#ifdef __ISAPNP__
	}
#endif	/* __ISAPNP__ */

	if ((chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size, "OPTi9xx MC")) == NULL) {
		snd_card_free(card);
		return -ENOMEM;
	}

	chip->wss_base = snd_port;
	chip->fm_port = snd_fm_port;
	chip->mpu_port = snd_mpu_port;
	chip->irq = snd_irq;
	chip->mpu_irq = snd_mpu_irq;
	chip->dma1 = snd_dma1;
#if defined(CS4231) || defined(OPTi93X)
	chip->dma2 = snd_dma2;
#endif

#ifdef __ISAPNP__
	if (!snd_isapnp) {
#endif
	if (chip->wss_base == SNDRV_AUTO_PORT) {
		if ((chip->wss_base = snd_legacy_find_free_ioport(possible_ports, 4)) < 0) {
			snd_card_free(card);
			snd_printk("unable to find a free WSS port\n");
			return -EBUSY;
		}
	}
	if (chip->mpu_port == SNDRV_AUTO_PORT) {
		if ((chip->mpu_port = snd_legacy_find_free_ioport(possible_mpu_ports, 2)) < 0) {
			snd_card_free(card);
			snd_printk("unable to find a free MPU401 port\n");
			return -EBUSY;
		}
	}
	if (chip->irq == SNDRV_AUTO_IRQ) {
		if ((chip->irq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
			snd_card_free(card);
			snd_printk("unable to find a free IRQ\n");
			return -EBUSY;
		}
	}
	if (chip->mpu_irq == SNDRV_AUTO_IRQ) {
		if ((chip->mpu_irq = snd_legacy_find_free_irq(possible_mpu_irqs)) < 0) {
			snd_card_free(card);
			snd_printk("unable to find a free MPU401 IRQ\n");
			return -EBUSY;
		}
	}
	if (chip->dma1 == SNDRV_AUTO_DMA) {
                if ((chip->dma1 = snd_legacy_find_free_dma(possible_dma1s)) < 0) {
                        snd_card_free(card);
			snd_printk("unable to find a free DMA1\n");
			return -EBUSY;
		}
        }
#if defined(CS4231) || defined(OPTi93X)
	if (chip->dma2 == SNDRV_AUTO_DMA) {
                if ((chip->dma2 = snd_legacy_find_free_dma(possible_dma2s[chip->dma1 % 4])) < 0) {
                        snd_card_free(card);
			snd_printk("unable to find a free DMA2\n");
			return -EBUSY;
		}
        }
#endif

#ifdef __ISAPNP__
	}
#endif

	if ((error = snd_opti9xx_configure(chip))) {
		snd_card_free(card);
		return error;
	}

#if defined(OPTi93X)
	if ((error = snd_opti93x_create(card, chip, chip->dma1, chip->dma2, &codec))) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_opti93x_pcm(codec, 0, &pcm)) < 0) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_opti93x_mixer(codec)) < 0) {
		snd_card_free(card);
		return error;
	}
#elif defined(CS4231)
	if ((error = snd_cs4231_create(card, chip->wss_base + 4, -1,
				       chip->irq, chip->dma1, chip->dma2,
				       CS4231_HW_DETECT,
				       0,
				       &codec)) < 0) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_cs4231_pcm(codec, 0, &pcm)) < 0) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_cs4231_mixer(codec)) < 0) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_cs4231_timer(codec, 0, &timer)) < 0) {
		snd_card_free(card);
		return error;
	}
#else
	if ((error = snd_ad1848_create(card, chip->wss_base + 4,
				       chip->irq, chip->dma1,
				       AD1848_HW_DETECT, &codec)) < 0) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_ad1848_pcm(codec, 0, &pcm)) < 0) {
		snd_card_free(card);
		return error;
	}
	if ((error = snd_ad1848_mixer(codec)) < 0) {
		snd_card_free(card);
		return error;
	}
#endif

	if (chip->mpu_port <= 0)
		rmidi = NULL;
	else
		if ((error = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
				chip->mpu_port, 0, chip->mpu_irq, SA_INTERRUPT,
				&rmidi)))
			snd_printk("no MPU-401 device at 0x%lx?\n", chip->mpu_port);

	if (chip->fm_port > 0) {
		opl3_t *opl3;
		if (snd_opl3_create(card,
				    chip->fm_port,
				    chip->fm_port + 2,
				    OPL3_HW_AUTO, 0, &opl3) < 0) {
			snd_printk("no OPL device at 0x%lx-0x%lx\n",
				chip->fm_port, chip->fm_port + 4 - 1);
		} else {
			if ((error = snd_opl3_timer_new(opl3,
#ifdef CS4231
							1, 2)) < 0) {
#else
							0, 1)) < 0) {
#endif	/* CS4231 */
				snd_card_free(card);
				return error;
			}
			if ((error = snd_opl3_hwdep_new(opl3, 0, 1, &synth)) < 0) {
				snd_card_free(card);
				return error;
			}
		}
	}

	strcpy(card->driver, chip->name);
	sprintf(card->shortname, "OPTi %s", card->driver);
#if defined(CS4231) || defined(OPTi93X)
	sprintf(card->longname, "%s soundcard, %s at 0x%lx, irq %d, dma %d&%d",
		card->shortname, pcm->name, chip->wss_base + 4,
		chip->irq, chip->dma1, chip->dma2);
#else
	sprintf(card->longname, "%s soundcard, %s at 0x%lx, irq %d, dma %d",
		card->shortname, pcm->name, chip->wss_base + 4,
		chip->irq, chip->dma1);
#endif	/* CS4231 || OPTi93X */
	if ((error = snd_card_register(card))) {
		snd_card_free(card);
		return error;
	}
	snd_opti9xx_card = card;
	return 0;
}

static int __init alsa_card_opti9xx_init(void)
{
	int error;

	if ((error = snd_card_opti9xx_probe())) {
#ifdef MODULE
#ifdef OPTi93X
		snd_printk("no OPTi 82C93x soundcard found\n");
#else
		snd_printk("no OPTi 82C92x soundcard found\n");
#endif	/* OPTi93X */
#endif
		return error;
	}
	return 0;
}

static void __exit alsa_card_opti9xx_exit(void)
{
	if (snd_opti9xx_card)
		snd_card_free(snd_opti9xx_card);
}

module_init(alsa_card_opti9xx_init)
module_exit(alsa_card_opti9xx_exit)

#ifndef MODULE

/* format is: snd-card-opti9xx=snd_enable,snd_index,snd_id,snd_isapnp,
			       snd_port,snd_mpu_port,snd_fm_port,
			       snd_irq,snd_mpu_irq,
			       snd_dma1,[snd_dma2] */

static int __init alsa_card_opti9xx_setup(char *str)
{
	int __attribute__ ((__unused__)) enable = 1;
	int __attribute__ ((__unused__)) pnp = INT_MAX;

	(void)(get_option(&str,&enable) == 2 &&
	       get_option(&str,&snd_index) == 2 &&
	       get_id(&str,&snd_id) == 2 &&
	       get_option(&str,&pnp) == 2 &&
	       get_option(&str,(int *)&snd_port) == 2 &&
	       get_option(&str,(int *)&snd_mpu_port) == 2 &&
	       get_option(&str,(int *)&snd_fm_port) == 2 &&
	       get_option(&str,&snd_irq) == 2 &&
	       get_option(&str,&snd_mpu_irq) == 2 &&
	       get_option(&str,&snd_dma1) == 2
#if defined(CS4231) || defined(OPTi93X)
	       &&
	       get_option(&str,&snd_dma2) == 2
#endif
	       );
#ifdef __ISAPNP__
	if (pnp != INT_MAX)
		snd_isapnp = pnp;
#endif
	return 1;
}

#if defined(OPTi93X)
__setup("snd-card-opti93x=", alsa_card_opti9xx_setup);
#elif defined(CS4231)
__setup("snd-card-opti92x-cs4231=", alsa_card_opti9xx_setup);
#else
__setup("snd-card-opti92x-ad1848=", alsa_card_opti9xx_setup);
#endif

#endif /* ifndef MODULE */
