Linux-2.6.12-rc2

[linux-2.6/next.git] / sound / oss / opl3sa2.c

/*
 * sound/opl3sa2.c
 *
 * A low level driver for Yamaha OPL3-SA2 and SA3 cards.
 * NOTE: All traces of the name OPL3-SAx have now (December 2000) been
 *       removed from the driver code, as an email exchange with Yamaha
 *       provided the information that the YMF-719 is indeed just a
 *       re-badged 715.
 *
 * Copyright 1998-2001 Scott Murray <scott@spiteful.org>
 *
 * Originally based on the CS4232 driver (in cs4232.c) by Hannu Savolainen
 * and others.  Now incorporates code/ideas from pss.c, also by Hannu
 * Savolainen.  Both of those files are distributed with the following
 * license:
 *
 * "Copyright (C) by Hannu Savolainen 1993-1997
 *
 *  OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
 *  Version 2 (June 1991). See the "COPYING" file distributed with this software
 *  for more info."
 *
 * As such, in accordance with the above license, this file, opl3sa2.c, is
 * distributed under the GNU GENERAL PUBLIC LICENSE (GPL) Version 2 (June 1991).
 * See the "COPYING" file distributed with this software for more information.
 *
 * Change History
 * --------------
 * Scott Murray            Original driver (Jun 14, 1998)
 * Paul J.Y. Lahaie        Changed probing / attach code order
 * Scott Murray            Added mixer support (Dec 03, 1998)
 * Scott Murray            Changed detection code to be more forgiving,
 *                         added force option as last resort,
 *                         fixed ioctl return values. (Dec 30, 1998)
 * Scott Murray            Simpler detection code should work all the time now
 *                         (with thanks to Ben Hutchings for the heuristic),
 *                         removed now unnecessary force option. (Jan 5, 1999)
 * Christoph Hellwig       Adapted to module_init/module_exit (Mar 4, 2000)
 * Scott Murray            Reworked SA2 versus SA3 mixer code, updated chipset
 *                         version detection code (again!). (Dec 5, 2000)
 * Scott Murray            Adjusted master volume mixer scaling. (Dec 6, 2000)
 * Scott Murray            Based on a patch by Joel Yliluoma (aka Bisqwit),
 *                         integrated wide mixer and adjusted mic, bass, treble
 *                         scaling. (Dec 6, 2000)
 * Scott Murray            Based on a patch by Peter Englmaier, integrated
 *                         ymode and loopback options. (Dec 6, 2000)
 * Scott Murray            Inspired by a patch by Peter Englmaier, and based on
 *                         what ALSA does, added initialization code for the
 *                         default DMA and IRQ settings. (Dec 6, 2000)
 * Scott Murray            Added some more checks to the card detection code,
 *                         based on what ALSA does. (Dec 12, 2000)
 * Scott Murray            Inspired by similar patches from John Fremlin,
 *                         Jim Radford, Mike Rolig, and Ingmar Steen, added 2.4
 *                         ISA PnP API support, mainly based on bits from
 *                         sb_card.c and awe_wave.c. (Dec 12, 2000)
 * Scott Murray            Some small cleanups to the init code output.
 *                         (Jan 7, 2001)
 * Zwane Mwaikambo         Added PM support. (Dec 4 2001)
 *
 * Adam Belay              Converted driver to new PnP Layer (Oct 12, 2002)
 * Zwane Mwaikambo         Code, data structure cleanups. (Feb 15 2002)
 * Zwane Mwaikambo         Free resources during auxiliary device probe
 *                         failures (Apr 29 2002)
 *   
 */

#include <linux/config.h>
#include <linux/pnp.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include "sound_config.h"

#include "ad1848.h"
#include "mpu401.h"

#define OPL3SA2_MODULE_NAME     "opl3sa2"
#define PFX                     OPL3SA2_MODULE_NAME ": "

/* Useful control port indexes: */
#define OPL3SA2_PM           0x01
#define OPL3SA2_SYS_CTRL     0x02
#define OPL3SA2_IRQ_CONFIG   0x03
#define OPL3SA2_DMA_CONFIG   0x06
#define OPL3SA2_MASTER_LEFT  0x07
#define OPL3SA2_MASTER_RIGHT 0x08
#define OPL3SA2_MIC          0x09
#define OPL3SA2_MISC         0x0A

#define OPL3SA3_WIDE         0x14
#define OPL3SA3_BASS         0x15
#define OPL3SA3_TREBLE       0x16

/* Useful constants: */
#define DEFAULT_VOLUME 50
#define DEFAULT_MIC    50
#define DEFAULT_TIMBRE 0

/* Power saving modes */
#define OPL3SA2_PM_MODE0        0x00
#define OPL3SA2_PM_MODE1        0x04    /* PSV */
#define OPL3SA2_PM_MODE2        0x05    /* PSV | PDX */
#define OPL3SA2_PM_MODE3        0x27    /* ADOWN | PSV | PDN | PDX */


/* For checking against what the card returns: */
#define VERSION_UNKNOWN 0
#define VERSION_YMF711  1
#define VERSION_YMF715  2
#define VERSION_YMF715B 3
#define VERSION_YMF715E 4
/* also assuming that anything > 4 but <= 7 is a 715E */

/* Chipset type constants for use below */
#define CHIPSET_UNKNOWN -1
#define CHIPSET_OPL3SA2 0
#define CHIPSET_OPL3SA3 1
static const char *CHIPSET_TABLE[] = {"OPL3-SA2", "OPL3-SA3"};

#ifdef CONFIG_PNP
#define OPL3SA2_CARDS_MAX 4
#else
#define OPL3SA2_CARDS_MAX 1
#endif

/* This should be pretty obvious */
static int opl3sa2_cards_num;

typedef struct {
        /* device resources */
        unsigned short cfg_port;
        struct address_info cfg;
        struct address_info cfg_mss;
        struct address_info cfg_mpu;
#ifdef CONFIG_PNP
        /* PnP Stuff */
        struct pnp_dev* pdev;
        int activated;                  /* Whether said devices have been activated */
#endif
#ifdef CONFIG_PM
        unsigned int    in_suspend;
        struct pm_dev   *pmdev;
#endif
        unsigned int    card;
        int             chipset;        /* What's my version(s)? */
        char            *chipset_name;

        /* mixer data */
        int             mixer;
        unsigned int    volume_l;
        unsigned int    volume_r;
        unsigned int    mic;
        unsigned int    bass_l;
        unsigned int    bass_r;
        unsigned int    treble_l;
        unsigned int    treble_r;
        unsigned int    wide_l;
        unsigned int    wide_r;
} opl3sa2_state_t;
static opl3sa2_state_t opl3sa2_state[OPL3SA2_CARDS_MAX];

        

/* Our parameters */
static int __initdata io        = -1;
static int __initdata mss_io    = -1;
static int __initdata mpu_io    = -1;
static int __initdata irq       = -1;
static int __initdata dma       = -1;
static int __initdata dma2      = -1;
static int __initdata ymode     = -1;
static int __initdata loopback  = -1;

#ifdef CONFIG_PNP
/* PnP specific parameters */
static int __initdata isapnp = 1;
static int __initdata multiple = 1;

/* Whether said devices have been activated */
static int opl3sa2_activated[OPL3SA2_CARDS_MAX];
#else
static int __initdata isapnp; /* = 0 */
static int __initdata multiple; /* = 0 */
#endif

MODULE_DESCRIPTION("Module for OPL3-SA2 and SA3 sound cards (uses AD1848 MSS driver).");
MODULE_AUTHOR("Scott Murray <scott@spiteful.org>");
MODULE_LICENSE("GPL");


module_param(io, int, 0);
MODULE_PARM_DESC(io, "Set I/O base of OPL3-SA2 or SA3 card (usually 0x370.  Address must be even and must be from 0x100 to 0xFFE)");

module_param(mss_io, int, 0);
MODULE_PARM_DESC(mss_io, "Set MSS (audio) I/O base (0x530, 0xE80, or other. Address must end in 0 or 4 and must be from 0x530 to 0xF48)");

module_param(mpu_io, int, 0);
MODULE_PARM_DESC(mpu_io, "Set MIDI I/O base (0x330 or other. Address must be even and must be from 0x300 to 0x334)");

module_param(irq, int, 0);
MODULE_PARM_DESC(mss_irq, "Set MSS (audio) IRQ (5, 7, 9, 10, 11, 12)");

module_param(dma, int, 0);
MODULE_PARM_DESC(dma, "Set MSS (audio) first DMA channel (0, 1, 3)");

module_param(dma2, int, 0);
MODULE_PARM_DESC(dma2, "Set MSS (audio) second DMA channel (0, 1, 3)");

module_param(ymode, int, 0);
MODULE_PARM_DESC(ymode, "Set Yamaha 3D enhancement mode (0 = Desktop/Normal, 1 = Notebook PC (1), 2 = Notebook PC (2), 3 = Hi-Fi)");

module_param(loopback, int, 0);
MODULE_PARM_DESC(loopback, "Set A/D input source. Useful for echo cancellation (0 = Mic Rch (default), 1 = Mono output loopback)");

#ifdef CONFIG_PNP
module_param(isapnp, bool, 0);
MODULE_PARM_DESC(isapnp, "When set to 0, ISA PnP support will be disabled");

module_param(multiple, bool, 0);
MODULE_PARM_DESC(multiple, "When set to 0, will not search for multiple cards");
#endif


/*
 * Standard read and write functions
*/

static inline void opl3sa2_write(unsigned short port,
                                 unsigned char  index,
                                 unsigned char  data)
{
        outb_p(index, port);
        outb(data, port + 1);
}


static inline void opl3sa2_read(unsigned short port,
                                unsigned char  index,
                                unsigned char* data)
{
        outb_p(index, port);
        *data = inb(port + 1);
}


/*
 * All of the mixer functions...
 */

static void opl3sa2_set_volume(opl3sa2_state_t* devc, int left, int right)
{
        static unsigned char scale[101] = {
                0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e,
                0x0e, 0x0e, 0x0e, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0d, 0x0c,
                0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b, 0x0b,
                0x0b, 0x0b, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x09, 0x09,
                0x09, 0x09, 0x09, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x08,
                0x08, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06,
                0x06, 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
                0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03,
                0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01,
                0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00
        };
        unsigned char vol;

        vol = scale[left];

        /* If level is zero, turn on mute */
        if(!left)
                vol |= 0x80;

        opl3sa2_write(devc->cfg_port, OPL3SA2_MASTER_LEFT, vol);

        vol = scale[right];

        /* If level is zero, turn on mute */
        if(!right)
                vol |= 0x80;

        opl3sa2_write(devc->cfg_port, OPL3SA2_MASTER_RIGHT, vol);
}


static void opl3sa2_set_mic(opl3sa2_state_t* devc, int level)
{
        unsigned char vol = 0x1F;

        if((level >= 0) && (level <= 100))
                vol = 0x1F - (unsigned char) (32 * level / 101);

        /* If level is zero, turn on mute */
        if(!level)
                vol |= 0x80;

        opl3sa2_write(devc->cfg_port, OPL3SA2_MIC, vol);
}


static void opl3sa3_set_bass(opl3sa2_state_t* devc, int left, int right)
{
        unsigned char bass;

        bass = left ? ((unsigned char) (8 * left / 101)) : 0; 
        bass |= (right ? ((unsigned char) (8 * right / 101)) : 0) << 4;

        opl3sa2_write(devc->cfg_port, OPL3SA3_BASS, bass);
}


static void opl3sa3_set_treble(opl3sa2_state_t* devc, int left, int right)
{       
        unsigned char treble;

        treble = left ? ((unsigned char) (8 * left / 101)) : 0; 
        treble |= (right ? ((unsigned char) (8 * right / 101)) : 0) << 4;

        opl3sa2_write(devc->cfg_port, OPL3SA3_TREBLE, treble);
}




static void opl3sa2_mixer_reset(opl3sa2_state_t* devc)
{
        if (devc) {
                opl3sa2_set_volume(devc, DEFAULT_VOLUME, DEFAULT_VOLUME);
                devc->volume_l = devc->volume_r = DEFAULT_VOLUME;

                opl3sa2_set_mic(devc, DEFAULT_MIC);
                devc->mic = DEFAULT_MIC;

                if (devc->chipset == CHIPSET_OPL3SA3) {
                        opl3sa3_set_bass(devc, DEFAULT_TIMBRE, DEFAULT_TIMBRE);
                        devc->bass_l = devc->bass_r = DEFAULT_TIMBRE;
                        opl3sa3_set_treble(devc, DEFAULT_TIMBRE, DEFAULT_TIMBRE);
                        devc->treble_l = devc->treble_r = DEFAULT_TIMBRE;
                }
        }
}

/* Currently only used for power management */
#ifdef CONFIG_PM
static void opl3sa2_mixer_restore(opl3sa2_state_t* devc)
{
        if (devc) {
                opl3sa2_set_volume(devc, devc->volume_l, devc->volume_r);
                opl3sa2_set_mic(devc, devc->mic);

                if (devc->chipset == CHIPSET_OPL3SA3) {
                        opl3sa3_set_bass(devc, devc->bass_l, devc->bass_r);
                        opl3sa3_set_treble(devc, devc->treble_l, devc->treble_r);
                }
        }
}
#endif

static inline void arg_to_vol_mono(unsigned int vol, int* value)
{
        int left;
        
        left = vol & 0x00ff;
        if (left > 100)
                left = 100;
        *value = left;
}


static inline void arg_to_vol_stereo(unsigned int vol, int* aleft, int* aright)
{
        arg_to_vol_mono(vol, aleft);
        arg_to_vol_mono(vol >> 8, aright);
}


static inline int ret_vol_mono(int vol)
{
        return ((vol << 8) | vol);
}


static inline int ret_vol_stereo(int left, int right)
{
        return ((right << 8) | left);
}


static int opl3sa2_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
{
        int retval, value, cmdf = cmd & 0xff;
        int __user *p = (int __user *)arg;

        opl3sa2_state_t* devc = &opl3sa2_state[dev];
        
        switch (cmdf) {
                case SOUND_MIXER_VOLUME:
                case SOUND_MIXER_MIC:
                case SOUND_MIXER_DEVMASK:
                case SOUND_MIXER_STEREODEVS: 
                case SOUND_MIXER_RECMASK:
                case SOUND_MIXER_RECSRC:
                case SOUND_MIXER_CAPS: 
                        break;

                default:
                        return -EINVAL;
        }
        
        if (((cmd >> 8) & 0xff) != 'M')
                return -EINVAL;
                
        retval = 0;
        if (_SIOC_DIR (cmd) & _SIOC_WRITE) {
                switch (cmdf) {
                        case SOUND_MIXER_VOLUME:
                                retval = get_user(value, (unsigned __user *) arg);
                                if (retval)
                                        break;
                                arg_to_vol_stereo(value, &devc->volume_l, &devc->volume_r);
                                opl3sa2_set_volume(devc, devc->volume_l, devc->volume_r);
                                value = ret_vol_stereo(devc->volume_l, devc->volume_r);
                                retval = put_user(value, p);
                                break;
                  
                        case SOUND_MIXER_MIC:
                                retval = get_user(value, (unsigned __user *) arg);
                                if (retval)
                                        break;
                                arg_to_vol_mono(value, &devc->mic);
                                opl3sa2_set_mic(devc, devc->mic);
                                value = ret_vol_mono(devc->mic);
                                retval = put_user(value, p);
                                break;

                        default:
                                retval = -EINVAL;
                }
        }
        else {
                /*
                 * Return parameters
                 */
                switch (cmdf) {
                        case SOUND_MIXER_DEVMASK:
                                retval = put_user(SOUND_MASK_VOLUME | SOUND_MASK_MIC, p);
                                break;
                  
                        case SOUND_MIXER_STEREODEVS:
                                retval = put_user(SOUND_MASK_VOLUME, p);
                                break;
                  
                        case SOUND_MIXER_RECMASK:
                                /* No recording devices */
                                retval = put_user(0, p);
                                break;

                        case SOUND_MIXER_CAPS:
                                retval = put_user(SOUND_CAP_EXCL_INPUT, p);
                                break;

                        case SOUND_MIXER_RECSRC:
                                /* No recording source */
                                retval = put_user(0, p);
                                break;

                        case SOUND_MIXER_VOLUME:
                                value = ret_vol_stereo(devc->volume_l, devc->volume_r);
                                retval = put_user(value, p);
                                break;
                          
                        case SOUND_MIXER_MIC:
                                value = ret_vol_mono(devc->mic);
                                put_user(value, p);
                                break;

                        default:
                                retval = -EINVAL;
                }
        }
        return retval;
}
/* opl3sa2_mixer_ioctl end */


static int opl3sa3_mixer_ioctl(int dev, unsigned int cmd, void __user * arg)
{
        int value, retval, cmdf = cmd & 0xff;

        opl3sa2_state_t* devc = &opl3sa2_state[dev];

        switch (cmdf) {
        case SOUND_MIXER_BASS:
                value = ret_vol_stereo(devc->bass_l, devc->bass_r);
                retval = put_user(value, (int __user *) arg);
                break;
                
        case SOUND_MIXER_TREBLE:
                value = ret_vol_stereo(devc->treble_l, devc->treble_r);
                retval = put_user(value, (int __user *) arg);
                break;

        case SOUND_MIXER_DIGITAL1:
                value = ret_vol_stereo(devc->wide_l, devc->wide_r);
                retval = put_user(value, (int __user *) arg);
                break;

        default:
                retval = -EINVAL;
        }
        return retval;
}
/* opl3sa3_mixer_ioctl end */


static struct mixer_operations opl3sa2_mixer_operations =
{
        .owner  = THIS_MODULE,
        .id     = "OPL3-SA2",
        .name   = "Yamaha OPL3-SA2",
        .ioctl  = opl3sa2_mixer_ioctl
};

static struct mixer_operations opl3sa3_mixer_operations =
{
        .owner  = THIS_MODULE,
        .id     = "OPL3-SA3",
        .name   = "Yamaha OPL3-SA3",
        .ioctl  = opl3sa3_mixer_ioctl
};

/* End of mixer-related stuff */


/*
 * Component probe, attach, unload functions
 */

static inline void __exit unload_opl3sa2_mpu(struct address_info *hw_config)
{
        unload_mpu401(hw_config);
}


static void __init attach_opl3sa2_mss(struct address_info* hw_config, struct resource *ports)
{
        int initial_mixers;

        initial_mixers = num_mixers;
        attach_ms_sound(hw_config, ports, THIS_MODULE); /* Slot 0 */
        if (hw_config->slots[0] != -1) {
                /* Did the MSS driver install? */
                if(num_mixers == (initial_mixers + 1)) {
                        /* The MSS mixer is installed, reroute mixers appropiately */
                        AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_CD);
                        AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH);
                        AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_LINE);
                }
                else {
                        printk(KERN_ERR PFX "MSS mixer not installed?\n");
                }
        }
}


static inline void __exit unload_opl3sa2_mss(struct address_info* hw_config)
{
        unload_ms_sound(hw_config);
}


static int __init probe_opl3sa2(struct address_info* hw_config, int card)
{
        unsigned char misc;
        unsigned char tmp;
        unsigned char version;

        /*
         * Try and allocate our I/O port range.
         */
        if (!request_region(hw_config->io_base, 2, OPL3SA2_MODULE_NAME)) {
                printk(KERN_ERR PFX "Control I/O port %#x not free\n",
                       hw_config->io_base);
                goto out_nodev;
        }

        /*
         * Check if writing to the read-only version bits of the miscellaneous
         * register succeeds or not (it should not).
         */
        opl3sa2_read(hw_config->io_base, OPL3SA2_MISC, &misc);
        opl3sa2_write(hw_config->io_base, OPL3SA2_MISC, misc ^ 0x07);
        opl3sa2_read(hw_config->io_base, OPL3SA2_MISC, &tmp);
        if(tmp != misc) {
                printk(KERN_ERR PFX "Control I/O port %#x is not a YMF7xx chipset!\n",
                       hw_config->io_base);
                goto out_region;
        }

        /*
         * Check if the MIC register is accessible.
         */
        opl3sa2_read(hw_config->io_base, OPL3SA2_MIC, &tmp);
        opl3sa2_write(hw_config->io_base, OPL3SA2_MIC, 0x8a);
        opl3sa2_read(hw_config->io_base, OPL3SA2_MIC, &tmp);
        if((tmp & 0x9f) != 0x8a) {
                printk(KERN_ERR
                       PFX "Control I/O port %#x is not a YMF7xx chipset!\n",
                       hw_config->io_base);
                goto out_region;
        }
        opl3sa2_write(hw_config->io_base, OPL3SA2_MIC, tmp);

        /*
         * Determine chipset type (SA2 or SA3)
         *
         * This is done by looking at the chipset version in the lower 3 bits
         * of the miscellaneous register.
         */
        version = misc & 0x07;
        printk(KERN_DEBUG PFX "Chipset version = %#x\n", version);
        switch (version) {
                case 0:
                        opl3sa2_state[card].chipset = CHIPSET_UNKNOWN;
                        printk(KERN_ERR
                               PFX "Unknown Yamaha audio controller version\n");
                        break;

                case VERSION_YMF711:
                        opl3sa2_state[card].chipset = CHIPSET_OPL3SA2;
                        printk(KERN_INFO PFX "Found OPL3-SA2 (YMF711)\n");
                        break;

                case VERSION_YMF715:
                        opl3sa2_state[card].chipset = CHIPSET_OPL3SA3;
                        printk(KERN_INFO
                               PFX "Found OPL3-SA3 (YMF715 or YMF719)\n");
                        break;

                case VERSION_YMF715B:
                        opl3sa2_state[card].chipset = CHIPSET_OPL3SA3;
                        printk(KERN_INFO
                               PFX "Found OPL3-SA3 (YMF715B or YMF719B)\n");
                        break;

                case VERSION_YMF715E:
                default:
                        opl3sa2_state[card].chipset = CHIPSET_OPL3SA3;
                        printk(KERN_INFO
                               PFX "Found OPL3-SA3 (YMF715E or YMF719E)\n");
                        break;
        }

        if (opl3sa2_state[card].chipset != CHIPSET_UNKNOWN) {
                /* Generate a pretty name */
                opl3sa2_state[card].chipset_name = (char *)CHIPSET_TABLE[opl3sa2_state[card].chipset];
                return 0;
        }

out_region:
        release_region(hw_config->io_base, 2);
out_nodev:
        return -ENODEV;
}


static void __init attach_opl3sa2(struct address_info* hw_config, int card)
{
        /* Initialize IRQ configuration to IRQ-B: -, IRQ-A: WSS+MPU+OPL3 */
        opl3sa2_write(hw_config->io_base, OPL3SA2_IRQ_CONFIG, 0x0d);

        /* Initialize DMA configuration */
        if(hw_config->dma2 == hw_config->dma) {
                /* Want DMA configuration DMA-B: -, DMA-A: WSS-P+WSS-R */
                opl3sa2_write(hw_config->io_base, OPL3SA2_DMA_CONFIG, 0x03);
        }
        else {
                /* Want DMA configuration DMA-B: WSS-R, DMA-A: WSS-P */
                opl3sa2_write(hw_config->io_base, OPL3SA2_DMA_CONFIG, 0x21);
        }
}


static void __init attach_opl3sa2_mixer(struct address_info *hw_config, int card)
{
        struct mixer_operations* mixer_operations;
        opl3sa2_state_t* devc = &opl3sa2_state[card];

        /* Install master mixer */
        if (devc->chipset == CHIPSET_OPL3SA3) {
                mixer_operations = &opl3sa3_mixer_operations;
        }
        else {
                mixer_operations = &opl3sa2_mixer_operations;
        }

        devc->cfg_port = hw_config->io_base;
        devc->mixer = sound_install_mixer(MIXER_DRIVER_VERSION,
                                          mixer_operations->name,
                                          mixer_operations,
                                          sizeof(struct mixer_operations),
                                          devc);
        if(devc->mixer < 0) {
                printk(KERN_ERR PFX "Could not install %s master mixer\n",
                         mixer_operations->name);
        }
        else {
                        opl3sa2_mixer_reset(devc);

        }
}


static void opl3sa2_clear_slots(struct address_info* hw_config)
{
        int i;

        for(i = 0; i < 6; i++) {
                hw_config->slots[i] = -1;
        }
}


static void __init opl3sa2_set_ymode(struct address_info* hw_config, int ymode)
{
        /*
         * Set the Yamaha 3D enhancement mode (aka Ymersion) if asked to and
         * it's supported.
         *
         * 0: Desktop (aka normal)   5-12 cm speakers
         * 1: Notebook PC mode 1     3 cm speakers
         * 2: Notebook PC mode 2     1.5 cm speakers
         * 3: Hi-fi                  16-38 cm speakers
         */
        if(ymode >= 0 && ymode <= 3) {
                unsigned char sys_ctrl;

                opl3sa2_read(hw_config->io_base, OPL3SA2_SYS_CTRL, &sys_ctrl);
                sys_ctrl = (sys_ctrl & 0xcf) | ((ymode & 3) << 4);
                opl3sa2_write(hw_config->io_base, OPL3SA2_SYS_CTRL, sys_ctrl);
        }
        else {
                printk(KERN_ERR PFX "not setting ymode, it must be one of 0,1,2,3\n");
        }
}


static void __init opl3sa2_set_loopback(struct address_info* hw_config, int loopback)
{
        if(loopback >= 0 && loopback <= 1) {
                unsigned char misc;

                opl3sa2_read(hw_config->io_base, OPL3SA2_MISC, &misc);
                misc = (misc & 0xef) | ((loopback & 1) << 4);
                opl3sa2_write(hw_config->io_base, OPL3SA2_MISC, misc);
        }
        else {
                printk(KERN_ERR PFX "not setting loopback, it must be either 0 or 1\n");
        }
}


static void __exit unload_opl3sa2(struct address_info* hw_config, int card)
{
        /* Release control ports */
        release_region(hw_config->io_base, 2);

        /* Unload mixer */
        if(opl3sa2_state[card].mixer >= 0)
                sound_unload_mixerdev(opl3sa2_state[card].mixer);

}

#ifdef CONFIG_PNP
static struct pnp_device_id pnp_opl3sa2_list[] = {
        {.id = "YMH0021", .driver_data = 0},
        {.id = ""}
};

MODULE_DEVICE_TABLE(pnp, pnp_opl3sa2_list);

static int opl3sa2_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
{
        int card = opl3sa2_cards_num;

        /* we don't actually want to return an error as the user may have specified
         * no multiple card search
         */

        if (opl3sa2_cards_num == OPL3SA2_CARDS_MAX)
                return 0;
        opl3sa2_activated[card] = 1;

        /* Our own config: */
        opl3sa2_state[card].cfg.io_base = pnp_port_start(dev, 4);
        opl3sa2_state[card].cfg.irq     = pnp_irq(dev, 0);
        opl3sa2_state[card].cfg.dma     = pnp_dma(dev, 0);
        opl3sa2_state[card].cfg.dma2    = pnp_dma(dev, 1);

        /* The MSS config: */
        opl3sa2_state[card].cfg_mss.io_base      = pnp_port_start(dev, 1);
        opl3sa2_state[card].cfg_mss.irq          = pnp_irq(dev, 0);
        opl3sa2_state[card].cfg_mss.dma          = pnp_dma(dev, 0);
        opl3sa2_state[card].cfg_mss.dma2         = pnp_dma(dev, 1);
        opl3sa2_state[card].cfg_mss.card_subtype = 1; /* No IRQ or DMA setup */

        opl3sa2_state[card].cfg_mpu.io_base       = pnp_port_start(dev, 3);
        opl3sa2_state[card].cfg_mpu.irq           = pnp_irq(dev, 0);
        opl3sa2_state[card].cfg_mpu.dma           = -1;
        opl3sa2_state[card].cfg_mpu.dma2          = -1;
        opl3sa2_state[card].cfg_mpu.always_detect = 1; /* It's there, so use shared IRQs */

        /* Call me paranoid: */
        opl3sa2_clear_slots(&opl3sa2_state[card].cfg);
        opl3sa2_clear_slots(&opl3sa2_state[card].cfg_mss);
        opl3sa2_clear_slots(&opl3sa2_state[card].cfg_mpu);

        opl3sa2_state[card].pdev = dev;
        opl3sa2_cards_num++;

        return 0;
}

static struct pnp_driver opl3sa2_driver = {
        .name           = "opl3sa2",
        .id_table       = pnp_opl3sa2_list,
        .probe          = opl3sa2_pnp_probe,
};

#endif /* CONFIG_PNP */

/* End of component functions */

#ifdef CONFIG_PM
static DEFINE_SPINLOCK(opl3sa2_lock);

/* Power Management support functions */
static int opl3sa2_suspend(struct pm_dev *pdev, unsigned int pm_mode)
{
        unsigned long flags;
        opl3sa2_state_t *p;

        if (!pdev)
                return -EINVAL;

        spin_lock_irqsave(&opl3sa2_lock,flags);

        p = (opl3sa2_state_t *) pdev->data;
        switch (pm_mode) {
        case 1:
                pm_mode = OPL3SA2_PM_MODE1;
                break;
        case 2:
                pm_mode = OPL3SA2_PM_MODE2;
                break;
        case 3:
                pm_mode = OPL3SA2_PM_MODE3;
                break;
        default:
                /* we don't know howto handle this... */
                spin_unlock_irqrestore(&opl3sa2_lock, flags);
                return -EBUSY;
        }

        p->in_suspend = 1;

        /* its supposed to automute before suspending, so we won't bother */
        opl3sa2_write(p->cfg_port, OPL3SA2_PM, pm_mode);
        /* wait a while for the clock oscillator to stabilise */
        mdelay(10);

        spin_unlock_irqrestore(&opl3sa2_lock,flags);
        return 0;
}

static int opl3sa2_resume(struct pm_dev *pdev)
{
        unsigned long flags;
        opl3sa2_state_t *p;

        if (!pdev)
                return -EINVAL;

        p = (opl3sa2_state_t *) pdev->data;
        spin_lock_irqsave(&opl3sa2_lock,flags);

        /* I don't think this is necessary */
        opl3sa2_write(p->cfg_port, OPL3SA2_PM, OPL3SA2_PM_MODE0);
        opl3sa2_mixer_restore(p);
        p->in_suspend = 0;

        spin_unlock_irqrestore(&opl3sa2_lock,flags);
        return 0;
}

static int opl3sa2_pm_callback(struct pm_dev *pdev, pm_request_t rqst, void *data)
{
        unsigned long mode = (unsigned  long)data;

        switch (rqst) {
                case PM_SUSPEND:
                        return opl3sa2_suspend(pdev, mode);

                case PM_RESUME:
                        return opl3sa2_resume(pdev);
        }
        return 0;
}
#endif /* CONFIG_PM */

/*
 * Install OPL3-SA2 based card(s).
 *
 * Need to have ad1848 and mpu401 loaded ready.
 */
static int __init init_opl3sa2(void)
{
        int card, max;

        /* Sanitize isapnp and multiple settings */
        isapnp = isapnp != 0 ? 1 : 0;
        multiple = multiple != 0 ? 1 : 0;

        max = (multiple && isapnp) ? OPL3SA2_CARDS_MAX : 1;

#ifdef CONFIG_PNP
        if (isapnp){
                pnp_register_driver(&opl3sa2_driver);
                if(!opl3sa2_cards_num){
                        printk(KERN_INFO PFX "No PnP cards found\n");
                        isapnp = 0;
                }
                max = opl3sa2_cards_num;
        }
#endif

        for (card = 0; card < max; card++) {
                /* If a user wants an I/O then assume they meant it */
                struct resource *ports;
                int base;
                
                if (!isapnp) {
                        if (io == -1 || irq == -1 || dma == -1 ||
                            dma2 == -1 || mss_io == -1) {
                                printk(KERN_ERR
                                       PFX "io, mss_io, irq, dma, and dma2 must be set\n");
                                return -EINVAL;
                        }
                        opl3sa2_cards_num++;

                        /*
                         * Our own config:
                         * (NOTE: IRQ and DMA aren't used, so they're set to
                         *  give pretty output from conf_printf. :)
                         */
                        opl3sa2_state[card].cfg.io_base = io;
                        opl3sa2_state[card].cfg.irq     = irq;
                        opl3sa2_state[card].cfg.dma     = dma;
                        opl3sa2_state[card].cfg.dma2    = dma2;
        
                        /* The MSS config: */
                        opl3sa2_state[card].cfg_mss.io_base      = mss_io;
                        opl3sa2_state[card].cfg_mss.irq          = irq;
                        opl3sa2_state[card].cfg_mss.dma          = dma;
                        opl3sa2_state[card].cfg_mss.dma2         = dma2;
                        opl3sa2_state[card].cfg_mss.card_subtype = 1; /* No IRQ or DMA setup */

                        opl3sa2_state[card].cfg_mpu.io_base       = mpu_io;
                        opl3sa2_state[card].cfg_mpu.irq           = irq;
                        opl3sa2_state[card].cfg_mpu.dma           = -1;
                        opl3sa2_state[card].cfg_mpu.always_detect = 1; /* Use shared IRQs */

                        /* Call me paranoid: */
                        opl3sa2_clear_slots(&opl3sa2_state[card].cfg);
                        opl3sa2_clear_slots(&opl3sa2_state[card].cfg_mss);
                        opl3sa2_clear_slots(&opl3sa2_state[card].cfg_mpu);
                }

                /* FIXME: leak */
                if (probe_opl3sa2(&opl3sa2_state[card].cfg, card))
                        return -ENODEV;

                base = opl3sa2_state[card].cfg_mss.io_base;

                if (!request_region(base, 4, "WSS config"))
                        goto failed;

                ports = request_region(base + 4, 4, "ad1848");
                if (!ports)
                        goto failed2;

                if (!probe_ms_sound(&opl3sa2_state[card].cfg_mss, ports)) {
                        /*
                         * If one or more cards are already registered, don't
                         * return an error but print a warning.  Note, this
                         * should never really happen unless the hardware or
                         * ISA PnP screwed up.
                         */
                        release_region(base + 4, 4);
                failed2:
                        release_region(base, 4);
                failed:
                        release_region(opl3sa2_state[card].cfg.io_base, 2);

                        if (opl3sa2_cards_num) {
                                printk(KERN_WARNING
                                       PFX "There was a problem probing one "
                                       " of the ISA PNP cards, continuing\n");
                                opl3sa2_cards_num--;
                                continue;
                        } else
                                return -ENODEV;
                }

                attach_opl3sa2(&opl3sa2_state[card].cfg, card);
                conf_printf(opl3sa2_state[card].chipset_name, &opl3sa2_state[card].cfg);
                attach_opl3sa2_mixer(&opl3sa2_state[card].cfg, card);
                attach_opl3sa2_mss(&opl3sa2_state[card].cfg_mss, ports);

                /* ewww =) */
                opl3sa2_state[card].card = card;
#ifdef CONFIG_PM
                /* register our power management capabilities */
                opl3sa2_state[card].pmdev = pm_register(PM_ISA_DEV, card, opl3sa2_pm_callback);
                if (opl3sa2_state[card].pmdev)
                        opl3sa2_state[card].pmdev->data = &opl3sa2_state[card];
#endif /* CONFIG_PM */

                /*
                 * Set the Yamaha 3D enhancement mode (aka Ymersion) if asked to and
                 * it's supported.
                 */
                if (ymode != -1) {
                        if (opl3sa2_state[card].chipset == CHIPSET_OPL3SA2) {
                                printk(KERN_ERR
                                       PFX "ymode not supported on OPL3-SA2\n");
                        }
                        else {
                                opl3sa2_set_ymode(&opl3sa2_state[card].cfg, ymode);
                        }
                }


                /* Set A/D input to Mono loopback if asked to. */
                if (loopback != -1) {
                        opl3sa2_set_loopback(&opl3sa2_state[card].cfg, loopback);
                }
                
                /* Attach MPU if we've been asked to do so, failure isn't fatal */
                if (opl3sa2_state[card].cfg_mpu.io_base != -1) {
                        int base = opl3sa2_state[card].cfg_mpu.io_base;
                        struct resource *ports;
                        ports = request_region(base, 2, "mpu401");
                        if (!ports)
                                goto out;
                        if (!probe_mpu401(&opl3sa2_state[card].cfg_mpu, ports)) {
                                release_region(base, 2);
                                goto out;
                        }
                        if (attach_mpu401(&opl3sa2_state[card].cfg_mpu, THIS_MODULE)) {
                                printk(KERN_ERR PFX "failed to attach MPU401\n");
                                opl3sa2_state[card].cfg_mpu.slots[1] = -1;
                        }
                }
        }

out:
        if (isapnp) {
                printk(KERN_NOTICE PFX "%d PnP card(s) found.\n", opl3sa2_cards_num);
        }

        return 0;
}


/*
 * Uninstall OPL3-SA2 based card(s).
 */
static void __exit cleanup_opl3sa2(void)
{
        int card;

        for(card = 0; card < opl3sa2_cards_num; card++) {
#ifdef CONFIG_PM
                if (opl3sa2_state[card].pmdev)
                        pm_unregister(opl3sa2_state[card].pmdev);
#endif
                if (opl3sa2_state[card].cfg_mpu.slots[1] != -1) {
                        unload_opl3sa2_mpu(&opl3sa2_state[card].cfg_mpu);
                }
                unload_opl3sa2_mss(&opl3sa2_state[card].cfg_mss);
                unload_opl3sa2(&opl3sa2_state[card].cfg, card);
#ifdef CONFIG_PNP
                pnp_unregister_driver(&opl3sa2_driver);
#endif
        }
}

module_init(init_opl3sa2);
module_exit(cleanup_opl3sa2);

#ifndef MODULE
static int __init setup_opl3sa2(char *str)
{
        /* io, irq, dma, dma2,... */
#ifdef CONFIG_PNP
        int ints[11];
#else
        int ints[9];
#endif
        str = get_options(str, ARRAY_SIZE(ints), ints);
        
        io       = ints[1];
        irq      = ints[2];
        dma      = ints[3];
        dma2     = ints[4];
        mss_io   = ints[5];
        mpu_io   = ints[6];
        ymode    = ints[7];
        loopback = ints[8];
#ifdef CONFIG_PNP
        isapnp   = ints[9];
        multiple = ints[10];
#endif
        return 1;
}

__setup("opl3sa2=", setup_opl3sa2);
#endif