root/sound/isa/opti9xx/miro.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA soundcard driver for Miro miroSOUND PCM1 pro
 *                                  miroSOUND PCM12
 *                                  miroSOUND PCM20 Radio
 *
 *   Copyright (C) 2004-2005 Martin Langer <martin-langer@gmx.de>
 *
 *   Based on OSS ACI and ALSA OPTi9xx drivers
 */

#include <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/pnp.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/io.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/wss.h>
#include <sound/mpu401.h>
#include <sound/opl4.h>
#include <sound/control.h>
#include <sound/info.h>
#define SNDRV_LEGACY_FIND_FREE_IOPORT
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
#include <sound/aci.h>

MODULE_AUTHOR("Martin Langer <martin-langer@gmx.de>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Miro miroSOUND PCM1 pro, PCM12, PCM20 Radio");

static int index = SNDRV_DEFAULT_IDX1;          /* Index 0-MAX */
static char *id = SNDRV_DEFAULT_STR1;           /* ID for this card */
static long port = SNDRV_DEFAULT_PORT1;         /* 0x530,0xe80,0xf40,0x604 */
static long mpu_port = SNDRV_DEFAULT_PORT1;     /* 0x300,0x310,0x320,0x330 */
static long fm_port = SNDRV_DEFAULT_PORT1;      /* 0x388 */
static int irq = SNDRV_DEFAULT_IRQ1;            /* 5,7,9,10,11 */
static int mpu_irq = SNDRV_DEFAULT_IRQ1;        /* 5,7,9,10 */
static int dma1 = SNDRV_DEFAULT_DMA1;           /* 0,1,3 */
static int dma2 = SNDRV_DEFAULT_DMA1;           /* 0,1,3 */
static int wss;
static int ide;
#ifdef CONFIG_PNP
static bool isapnp = 1;                         /* Enable ISA PnP detection */
#endif

module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for miro soundcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for miro soundcard.");
module_param_hw(port, long, ioport, 0444);
MODULE_PARM_DESC(port, "WSS port # for miro driver.");
module_param_hw(mpu_port, long, ioport, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for miro driver.");
module_param_hw(fm_port, long, ioport, 0444);
MODULE_PARM_DESC(fm_port, "FM Port # for miro driver.");
module_param_hw(irq, int, irq, 0444);
MODULE_PARM_DESC(irq, "WSS irq # for miro driver.");
module_param_hw(mpu_irq, int, irq, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 irq # for miro driver.");
module_param_hw(dma1, int, dma, 0444);
MODULE_PARM_DESC(dma1, "1st dma # for miro driver.");
module_param_hw(dma2, int, dma, 0444);
MODULE_PARM_DESC(dma2, "2nd dma # for miro driver.");
module_param(wss, int, 0444);
MODULE_PARM_DESC(wss, "wss mode");
module_param(ide, int, 0444);
MODULE_PARM_DESC(ide, "enable ide port");
#ifdef CONFIG_PNP
module_param(isapnp, bool, 0444);
MODULE_PARM_DESC(isapnp, "Enable ISA PnP detection for specified soundcard.");
#endif

#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

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

        struct resource *res_mc_base;
        struct resource *res_aci_port;

        unsigned long mc_base;
        unsigned long mc_base_size;
        unsigned long pwd_reg;

        spinlock_t lock;
        struct snd_pcm *pcm;

        long wss_base;
        int irq;
        int dma1;
        int dma2;

        long mpu_port;
        int mpu_irq;

        struct snd_card *card;
        struct snd_miro_aci *aci;
};

static struct snd_miro_aci aci_device;

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

static int snd_miro_pnp_is_probed;

#ifdef CONFIG_PNP

static const struct pnp_card_device_id snd_miro_pnpids[] = {
        /* PCM20 and PCM12 in PnP mode */
        { .id = "MIR0924",
          .devs = { { "MIR0000" }, { "MIR0002" }, { "MIR0005" } }, },
        { .id = "" }
};

MODULE_DEVICE_TABLE(pnp_card, snd_miro_pnpids);

#endif  /* CONFIG_PNP */

/* 
 *  ACI control
 */

static int aci_busy_wait(struct snd_miro_aci *aci)
{
        long timeout;
        unsigned char byte;

        for (timeout = 1; timeout <= ACI_MINTIME + 30; timeout++) {
                byte = inb(aci->aci_port + ACI_REG_BUSY);
                if ((byte & 1) == 0) {
                        if (timeout >= ACI_MINTIME)
                                dev_dbg(aci->card->dev,
                                        "aci ready in round %ld.\n",
                                        timeout-ACI_MINTIME);
                        return byte;
                }
                if (timeout >= ACI_MINTIME) {
                        long out=10*HZ;
                        switch (timeout-ACI_MINTIME) {
                        case 0 ... 9:
                                out /= 10;
                                fallthrough;
                        case 10 ... 19:
                                out /= 10;
                                fallthrough;
                        case 20 ... 30:
                                out /= 10;
                                fallthrough;
                        default:
                                set_current_state(TASK_UNINTERRUPTIBLE);
                                schedule_timeout(out);
                                break;
                        }
                }
        }
        dev_err(aci->card->dev, "%s() time out\n", __func__);
        return -EBUSY;
}

static inline int aci_write(struct snd_miro_aci *aci, unsigned char byte)
{
        if (aci_busy_wait(aci) >= 0) {
                outb(byte, aci->aci_port + ACI_REG_COMMAND);
                return 0;
        } else {
                dev_err(aci->card->dev, "aci busy, %s(0x%x) stopped.\n", __func__, byte);
                return -EBUSY;
        }
}

static inline int aci_read(struct snd_miro_aci *aci)
{
        unsigned char byte;

        if (aci_busy_wait(aci) >= 0) {
                byte = inb(aci->aci_port + ACI_REG_STATUS);
                return byte;
        } else {
                dev_err(aci->card->dev, "aci busy, %s() stopped.\n", __func__);
                return -EBUSY;
        }
}

int snd_aci_cmd(struct snd_miro_aci *aci, int write1, int write2, int write3)
{
        int write[] = {write1, write2, write3};
        int value, i;

        if (mutex_lock_interruptible(&aci->aci_mutex))
                return -EINTR;

        for (i=0; i<3; i++) {
                if (write[i]< 0 || write[i] > 255)
                        break;
                else {
                        value = aci_write(aci, write[i]);
                        if (value < 0)
                                goto out;
                }
        }

        value = aci_read(aci);

out:    mutex_unlock(&aci->aci_mutex);
        return value;
}
EXPORT_SYMBOL(snd_aci_cmd);

static int aci_getvalue(struct snd_miro_aci *aci, unsigned char index)
{
        return snd_aci_cmd(aci, ACI_STATUS, index, -1);
}

static int aci_setvalue(struct snd_miro_aci *aci, unsigned char index,
                        int value)
{
        return snd_aci_cmd(aci, index, value, -1);
}

struct snd_miro_aci *snd_aci_get_aci(void)
{
        if (aci_device.aci_port == 0)
                return NULL;
        return &aci_device;
}
EXPORT_SYMBOL(snd_aci_get_aci);

/*
 *  MIXER part
 */

#define snd_miro_info_capture   snd_ctl_boolean_mono_info

static int snd_miro_get_capture(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        int value;

        value = aci_getvalue(miro->aci, ACI_S_GENERAL);
        if (value < 0) {
                dev_err(miro->card->dev, "%s() failed: %d\n", __func__,
                        value);
                return value;
        }

        ucontrol->value.integer.value[0] = value & 0x20;

        return 0;
}

static int snd_miro_put_capture(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        int change, value, error;

        value = !(ucontrol->value.integer.value[0]);

        error = aci_setvalue(miro->aci, ACI_SET_SOLOMODE, value);
        if (error < 0) {
                dev_err(miro->card->dev, "%s() failed: %d\n", __func__,
                        error);
                return error;
        }

        change = (value != miro->aci->aci_solomode);
        miro->aci->aci_solomode = value;
        
        return change;
}

static int snd_miro_info_preamp(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_info *uinfo)
{
        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 1;
        uinfo->value.integer.min = 0;
        uinfo->value.integer.max = 3;

        return 0;
}

static int snd_miro_get_preamp(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        int value;

        if (miro->aci->aci_version <= 176) {

                /* 
                   OSS says it's not readable with versions < 176.
                   But it doesn't work on my card,
                   which is a PCM12 with aci_version = 176.
                */

                ucontrol->value.integer.value[0] = miro->aci->aci_preamp;
                return 0;
        }

        value = aci_getvalue(miro->aci, ACI_GET_PREAMP);
        if (value < 0) {
                dev_err(miro->card->dev, "%s() failed: %d\n", __func__,
                        value);
                return value;
        }
        
        ucontrol->value.integer.value[0] = value;

        return 0;
}

static int snd_miro_put_preamp(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        int error, value, change;

        value = ucontrol->value.integer.value[0];

        error = aci_setvalue(miro->aci, ACI_SET_PREAMP, value);
        if (error < 0) {
                dev_err(miro->card->dev, "%s() failed: %d\n", __func__,
                        error);
                return error;
        }

        change = (value != miro->aci->aci_preamp);
        miro->aci->aci_preamp = value;

        return change;
}

#define snd_miro_info_amp       snd_ctl_boolean_mono_info

static int snd_miro_get_amp(struct snd_kcontrol *kcontrol,
                            struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = miro->aci->aci_amp;

        return 0;
}

static int snd_miro_put_amp(struct snd_kcontrol *kcontrol,
                            struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        int error, value, change;

        value = ucontrol->value.integer.value[0];

        error = aci_setvalue(miro->aci, ACI_SET_POWERAMP, value);
        if (error < 0) {
                dev_err(miro->card->dev, "%s() to %d failed: %d\n", __func__,
                        value, error);
                return error;
        }

        change = (value != miro->aci->aci_amp);
        miro->aci->aci_amp = value;

        return change;
}

#define MIRO_DOUBLE(ctl_name, ctl_index, get_right_reg, set_right_reg) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = ctl_name, \
  .index = ctl_index, \
  .info = snd_miro_info_double, \
  .get = snd_miro_get_double, \
  .put = snd_miro_put_double, \
  .private_value = get_right_reg | (set_right_reg << 8) \
}

static int snd_miro_info_double(struct snd_kcontrol *kcontrol, 
                                struct snd_ctl_elem_info *uinfo)
{
        int reg = kcontrol->private_value & 0xff;

        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 2;

        if ((reg >= ACI_GET_EQ1) && (reg <= ACI_GET_EQ7)) {

                /* equalizer elements */

                uinfo->value.integer.min = - 0x7f;
                uinfo->value.integer.max = 0x7f;
        } else {

                /* non-equalizer elements */

                uinfo->value.integer.min = 0;
                uinfo->value.integer.max = 0x20;
        }

        return 0;
}

static int snd_miro_get_double(struct snd_kcontrol *kcontrol, 
                               struct snd_ctl_elem_value *uinfo)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        int left_val, right_val;

        int right_reg = kcontrol->private_value & 0xff;
        int left_reg = right_reg + 1;

        right_val = aci_getvalue(miro->aci, right_reg);
        if (right_val < 0) {
                dev_err(miro->card->dev, "aci_getvalue(%d) failed: %d\n",
                        right_reg, right_val);
                return right_val;
        }

        left_val = aci_getvalue(miro->aci, left_reg);
        if (left_val < 0) {
                dev_err(miro->card->dev, "aci_getvalue(%d) failed: %d\n",
                        left_reg, left_val);
                return left_val;
        }

        if ((right_reg >= ACI_GET_EQ1) && (right_reg <= ACI_GET_EQ7)) {

                /* equalizer elements */

                if (left_val < 0x80) {
                        uinfo->value.integer.value[0] = left_val;
                } else {
                        uinfo->value.integer.value[0] = 0x80 - left_val;
                }

                if (right_val < 0x80) {
                        uinfo->value.integer.value[1] = right_val;
                } else {
                        uinfo->value.integer.value[1] = 0x80 - right_val;
                }

        } else {

                /* non-equalizer elements */

                uinfo->value.integer.value[0] = 0x20 - left_val;
                uinfo->value.integer.value[1] = 0x20 - right_val;
        }

        return 0;
}

static int snd_miro_put_double(struct snd_kcontrol *kcontrol, 
                               struct snd_ctl_elem_value *ucontrol)
{
        struct snd_miro *miro = snd_kcontrol_chip(kcontrol);
        struct snd_miro_aci *aci = miro->aci;
        int left, right, left_old, right_old;
        int setreg_left, setreg_right, getreg_left, getreg_right;
        int change, error;

        left = ucontrol->value.integer.value[0];
        right = ucontrol->value.integer.value[1];

        setreg_right = (kcontrol->private_value >> 8) & 0xff;
        setreg_left = setreg_right + 8;
        if (setreg_right == ACI_SET_MASTER)
                setreg_left -= 7;

        getreg_right = kcontrol->private_value & 0xff;
        getreg_left = getreg_right + 1;

        left_old = aci_getvalue(aci, getreg_left);
        if (left_old < 0) {
                dev_err(miro->card->dev, "aci_getvalue(%d) failed: %d\n",
                        getreg_left, left_old);
                return left_old;
        }

        right_old = aci_getvalue(aci, getreg_right);
        if (right_old < 0) {
                dev_err(miro->card->dev, "aci_getvalue(%d) failed: %d\n",
                        getreg_right, right_old);
                return right_old;
        }

        if ((getreg_right >= ACI_GET_EQ1) && (getreg_right <= ACI_GET_EQ7)) {

                /* equalizer elements */

                if (left < -0x7f || left > 0x7f ||
                    right < -0x7f || right > 0x7f)
                        return -EINVAL;

                if (left_old > 0x80) 
                        left_old = 0x80 - left_old;
                if (right_old > 0x80) 
                        right_old = 0x80 - right_old;

                if (left >= 0) {
                        error = aci_setvalue(aci, setreg_left, left);
                        if (error < 0) {
                                dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                        left, error);
                                return error;
                        }
                } else {
                        error = aci_setvalue(aci, setreg_left, 0x80 - left);
                        if (error < 0) {
                                dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                        0x80 - left, error);
                                return error;
                        }
                }

                if (right >= 0) {
                        error = aci_setvalue(aci, setreg_right, right);
                        if (error < 0) {
                                dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                        right, error);
                                return error;
                        }
                } else {
                        error = aci_setvalue(aci, setreg_right, 0x80 - right);
                        if (error < 0) {
                                dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                        0x80 - right, error);
                                return error;
                        }
                }

        } else {

                /* non-equalizer elements */

                if (left < 0 || left > 0x20 ||
                    right < 0 || right > 0x20)
                        return -EINVAL;

                left_old = 0x20 - left_old;
                right_old = 0x20 - right_old;

                error = aci_setvalue(aci, setreg_left, 0x20 - left);
                if (error < 0) {
                        dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                0x20 - left, error);
                        return error;
                }
                error = aci_setvalue(aci, setreg_right, 0x20 - right);
                if (error < 0) {
                        dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                0x20 - right, error);
                        return error;
                }
        }

        change = (left != left_old) || (right != right_old);

        return change;
}

static const struct snd_kcontrol_new snd_miro_controls[] = {
MIRO_DOUBLE("Master Playback Volume", 0, ACI_GET_MASTER, ACI_SET_MASTER),
MIRO_DOUBLE("Mic Playback Volume", 1, ACI_GET_MIC, ACI_SET_MIC),
MIRO_DOUBLE("Line Playback Volume", 1, ACI_GET_LINE, ACI_SET_LINE),
MIRO_DOUBLE("CD Playback Volume", 0, ACI_GET_CD, ACI_SET_CD),
MIRO_DOUBLE("Synth Playback Volume", 0, ACI_GET_SYNTH, ACI_SET_SYNTH),
MIRO_DOUBLE("PCM Playback Volume", 1, ACI_GET_PCM, ACI_SET_PCM),
MIRO_DOUBLE("Aux Playback Volume", 2, ACI_GET_LINE2, ACI_SET_LINE2),
};

/* Equalizer with seven bands (only PCM20) 
   from -12dB up to +12dB on each band */
static const struct snd_kcontrol_new snd_miro_eq_controls[] = {
MIRO_DOUBLE("Tone Control - 28 Hz", 0, ACI_GET_EQ1, ACI_SET_EQ1),
MIRO_DOUBLE("Tone Control - 160 Hz", 0, ACI_GET_EQ2, ACI_SET_EQ2),
MIRO_DOUBLE("Tone Control - 400 Hz", 0, ACI_GET_EQ3, ACI_SET_EQ3),
MIRO_DOUBLE("Tone Control - 1 kHz", 0, ACI_GET_EQ4, ACI_SET_EQ4),
MIRO_DOUBLE("Tone Control - 2.5 kHz", 0, ACI_GET_EQ5, ACI_SET_EQ5),
MIRO_DOUBLE("Tone Control - 6.3 kHz", 0, ACI_GET_EQ6, ACI_SET_EQ6),
MIRO_DOUBLE("Tone Control - 16 kHz", 0, ACI_GET_EQ7, ACI_SET_EQ7),
};

static const struct snd_kcontrol_new snd_miro_radio_control[] = {
MIRO_DOUBLE("Radio Playback Volume", 0, ACI_GET_LINE1, ACI_SET_LINE1),
};

static const struct snd_kcontrol_new snd_miro_line_control[] = {
MIRO_DOUBLE("Line Playback Volume", 2, ACI_GET_LINE1, ACI_SET_LINE1),
};

static const struct snd_kcontrol_new snd_miro_preamp_control[] = {
{
        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
        .name = "Mic Boost",
        .index = 1,
        .info = snd_miro_info_preamp,
        .get = snd_miro_get_preamp,
        .put = snd_miro_put_preamp,
}};

static const struct snd_kcontrol_new snd_miro_amp_control[] = {
{
        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
        .name = "Line Boost",
        .index = 0,
        .info = snd_miro_info_amp,
        .get = snd_miro_get_amp,
        .put = snd_miro_put_amp,
}};

static const struct snd_kcontrol_new snd_miro_capture_control[] = {
{
        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
        .name = "PCM Capture Switch",
        .index = 0,
        .info = snd_miro_info_capture,
        .get = snd_miro_get_capture,
        .put = snd_miro_put_capture,
}};

static const unsigned char aci_init_values[][2] = {
        { ACI_SET_MUTE, 0x00 },
        { ACI_SET_POWERAMP, 0x00 },
        { ACI_SET_PREAMP, 0x00 },
        { ACI_SET_SOLOMODE, 0x00 },
        { ACI_SET_MIC + 0, 0x20 },
        { ACI_SET_MIC + 8, 0x20 },
        { ACI_SET_LINE + 0, 0x20 },
        { ACI_SET_LINE + 8, 0x20 },
        { ACI_SET_CD + 0, 0x20 },
        { ACI_SET_CD + 8, 0x20 },
        { ACI_SET_PCM + 0, 0x20 },
        { ACI_SET_PCM + 8, 0x20 },
        { ACI_SET_LINE1 + 0, 0x20 },
        { ACI_SET_LINE1 + 8, 0x20 },
        { ACI_SET_LINE2 + 0, 0x20 },
        { ACI_SET_LINE2 + 8, 0x20 },
        { ACI_SET_SYNTH + 0, 0x20 },
        { ACI_SET_SYNTH + 8, 0x20 },
        { ACI_SET_MASTER + 0, 0x20 },
        { ACI_SET_MASTER + 1, 0x20 },
};

static int snd_set_aci_init_values(struct snd_miro *miro)
{
        int idx, error;
        struct snd_miro_aci *aci = miro->aci;

        /* enable WSS on PCM1 */

        if ((aci->aci_product == 'A') && wss) {
                error = aci_setvalue(aci, ACI_SET_WSS, wss);
                if (error < 0) {
                        dev_err(miro->card->dev, "enabling WSS mode failed\n");
                        return error;
                }
        }

        /* enable IDE port */

        if (ide) {
                error = aci_setvalue(aci, ACI_SET_IDE, ide);
                if (error < 0) {
                        dev_err(miro->card->dev, "enabling IDE port failed\n");
                        return error;
                }
        }

        /* set common aci values */

        for (idx = 0; idx < ARRAY_SIZE(aci_init_values); idx++) {
                error = aci_setvalue(aci, aci_init_values[idx][0],
                                     aci_init_values[idx][1]);
                if (error < 0) {
                        dev_err(miro->card->dev, "aci_setvalue(%d) failed: %d\n",
                                aci_init_values[idx][0], error);
                        return error;
                }
        }
        aci->aci_amp = 0;
        aci->aci_preamp = 0;
        aci->aci_solomode = 1;

        return 0;
}

static int snd_miro_mixer(struct snd_card *card,
                          struct snd_miro *miro)
{
        unsigned int idx;
        int err;

        if (snd_BUG_ON(!miro || !card))
                return -EINVAL;

        switch (miro->hardware) {
        case OPTi9XX_HW_82C924:
                strscpy(card->mixername, "ACI & OPTi924");
                break;
        case OPTi9XX_HW_82C929:
                strscpy(card->mixername, "ACI & OPTi929");
                break;
        default:
                snd_BUG();
                break;
        }

        for (idx = 0; idx < ARRAY_SIZE(snd_miro_controls); idx++) {
                err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_controls[idx], miro));
                if (err < 0)
                        return err;
        }

        if ((miro->aci->aci_product == 'A') ||
            (miro->aci->aci_product == 'B')) {
                /* PCM1/PCM12 with power-amp and Line 2 */
                err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_line_control[0], miro));
                if (err < 0)
                        return err;
                err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_amp_control[0], miro));
                if (err < 0)
                        return err;
        }

        if ((miro->aci->aci_product == 'B') ||
            (miro->aci->aci_product == 'C')) {
                /* PCM12/PCM20 with mic-preamp */
                err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_preamp_control[0], miro));
                if (err < 0)
                        return err;
                if (miro->aci->aci_version >= 176) {
                        err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_capture_control[0], miro));
                        if (err < 0)
                                return err;
                }
        }

        if (miro->aci->aci_product == 'C') {
                /* PCM20 with radio and 7 band equalizer */
                err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_radio_control[0], miro));
                if (err < 0)
                        return err;
                for (idx = 0; idx < ARRAY_SIZE(snd_miro_eq_controls); idx++) {
                        err = snd_ctl_add(card, snd_ctl_new1(&snd_miro_eq_controls[idx], miro));
                        if (err < 0)
                                return err;
                }
        }

        return 0;
}

static int snd_miro_init(struct snd_miro *chip,
                         unsigned short hardware)
{
        static const int opti9xx_mc_size[] = {7, 7, 10, 10, 2, 2, 2};

        chip->hardware = hardware;
        strscpy(chip->name, snd_opti9xx_names[hardware]);

        chip->mc_base_size = opti9xx_mc_size[hardware];  

        spin_lock_init(&chip->lock);

        chip->wss_base = -1;
        chip->irq = -1;
        chip->dma1 = -1;
        chip->dma2 = -1;
        chip->mpu_port = -1;
        chip->mpu_irq = -1;

        chip->pwd_reg = 3;

#ifdef CONFIG_PNP
        if (isapnp && chip->mc_base)
                /* PnP resource gives the least 10 bits */
                chip->mc_base |= 0xc00;
        else
#endif
                chip->mc_base = 0xf8c;

        switch (hardware) {
        case OPTi9XX_HW_82C929:
                chip->password = 0xe3;
                break;

        case OPTi9XX_HW_82C924:
                chip->password = 0xe5;
                break;

        default:
                dev_err(chip->card->dev, "sorry, no support for %d\n", hardware);
                return -ENODEV;
        }

        return 0;
}

static unsigned char snd_miro_read(struct snd_miro *chip,
                                   unsigned char reg)
{
        unsigned char retval = 0xff;

        guard(spinlock_irqsave)(&chip->lock);
        outb(chip->password, chip->mc_base + chip->pwd_reg);

        switch (chip->hardware) {
        case OPTi9XX_HW_82C924:
                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;
                }
                fallthrough;

        case OPTi9XX_HW_82C929:
                retval = inb(chip->mc_base + reg);
                break;

        default:
                dev_err(chip->card->dev, "sorry, no support for %d\n", chip->hardware);
        }

        return retval;
}

static void snd_miro_write(struct snd_miro *chip, unsigned char reg,
                           unsigned char value)
{
        guard(spinlock_irqsave)(&chip->lock);
        outb(chip->password, chip->mc_base + chip->pwd_reg);

        switch (chip->hardware) {
        case OPTi9XX_HW_82C924:
                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;
                }
                fallthrough;

        case OPTi9XX_HW_82C929:
                outb(value, chip->mc_base + reg);
                break;

        default:
                dev_err(chip->card->dev, "sorry, no support for %d\n", chip->hardware);
        }
}

static inline void snd_miro_write_mask(struct snd_miro *chip,
                unsigned char reg, unsigned char value, unsigned char mask)
{
        unsigned char oldval = snd_miro_read(chip, reg);

        snd_miro_write(chip, reg, (oldval & ~mask) | (value & mask));
}

/*
 *  Proc Interface
 */

static void snd_miro_proc_read(struct snd_info_entry * entry, 
                               struct snd_info_buffer *buffer)
{
        struct snd_miro *miro = (struct snd_miro *) entry->private_data;
        struct snd_miro_aci *aci = miro->aci;
        char* model = "unknown";

        /* miroSOUND PCM1 pro, early PCM12 */

        if ((miro->hardware == OPTi9XX_HW_82C929) &&
            (aci->aci_vendor == 'm') &&
            (aci->aci_product == 'A')) {
                switch (aci->aci_version) {
                case 3:
                        model = "miroSOUND PCM1 pro";
                        break;
                default:
                        model = "miroSOUND PCM1 pro / (early) PCM12";
                        break;
                }
        }

        /* miroSOUND PCM12, PCM12 (Rev. E), PCM12 pnp */

        if ((miro->hardware == OPTi9XX_HW_82C924) &&
            (aci->aci_vendor == 'm') &&
            (aci->aci_product == 'B')) {
                switch (aci->aci_version) {
                case 4:
                        model = "miroSOUND PCM12";
                        break;
                case 176:
                        model = "miroSOUND PCM12 (Rev. E)";
                        break;
                default:
                        model = "miroSOUND PCM12 / PCM12 pnp";
                        break;
                }
        }

        /* miroSOUND PCM20 radio */

        if ((miro->hardware == OPTi9XX_HW_82C924) &&
            (aci->aci_vendor == 'm') &&
            (aci->aci_product == 'C')) {
                switch (aci->aci_version) {
                case 7:
                        model = "miroSOUND PCM20 radio (Rev. E)";
                        break;
                default:
                        model = "miroSOUND PCM20 radio";
                        break;
                }
        }

        snd_iprintf(buffer, "\nGeneral information:\n");
        snd_iprintf(buffer, "  model   : %s\n", model);
        snd_iprintf(buffer, "  opti    : %s\n", miro->name);
        snd_iprintf(buffer, "  codec   : %s\n", miro->pcm->name);
        snd_iprintf(buffer, "  port    : 0x%lx\n", miro->wss_base);
        snd_iprintf(buffer, "  irq     : %d\n", miro->irq);
        snd_iprintf(buffer, "  dma     : %d,%d\n\n", miro->dma1, miro->dma2);

        snd_iprintf(buffer, "MPU-401:\n");
        snd_iprintf(buffer, "  port    : 0x%lx\n", miro->mpu_port);
        snd_iprintf(buffer, "  irq     : %d\n\n", miro->mpu_irq);

        snd_iprintf(buffer, "ACI information:\n");
        snd_iprintf(buffer, "  vendor  : ");
        switch (aci->aci_vendor) {
        case 'm':
                snd_iprintf(buffer, "Miro\n");
                break;
        default:
                snd_iprintf(buffer, "unknown (0x%x)\n", aci->aci_vendor);
                break;
        }

        snd_iprintf(buffer, "  product : ");
        switch (aci->aci_product) {
        case 'A':
                snd_iprintf(buffer, "miroSOUND PCM1 pro / (early) PCM12\n");
                break;
        case 'B':
                snd_iprintf(buffer, "miroSOUND PCM12\n");
                break;
        case 'C':
                snd_iprintf(buffer, "miroSOUND PCM20 radio\n");
                break;
        default:
                snd_iprintf(buffer, "unknown (0x%x)\n", aci->aci_product);
                break;
        }

        snd_iprintf(buffer, "  firmware: %d (0x%x)\n",
                    aci->aci_version, aci->aci_version);
        snd_iprintf(buffer, "  port    : 0x%lx-0x%lx\n", 
                    aci->aci_port, aci->aci_port+2);
        snd_iprintf(buffer, "  wss     : 0x%x\n", wss);
        snd_iprintf(buffer, "  ide     : 0x%x\n", ide);
        snd_iprintf(buffer, "  solomode: 0x%x\n", aci->aci_solomode);
        snd_iprintf(buffer, "  amp     : 0x%x\n", aci->aci_amp);
        snd_iprintf(buffer, "  preamp  : 0x%x\n", aci->aci_preamp);
}

static void snd_miro_proc_init(struct snd_card *card,
                               struct snd_miro *miro)
{
        snd_card_ro_proc_new(card, "miro", miro, snd_miro_proc_read);
}

/*
 *  Init
 */

static int snd_miro_configure(struct snd_miro *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;

        snd_miro_write_mask(chip, OPTi9XX_MC_REG(1), 0x80, 0x80);
        snd_miro_write_mask(chip, OPTi9XX_MC_REG(2), 0x20, 0x20); /* OPL4 */
        snd_miro_write_mask(chip, OPTi9XX_MC_REG(5), 0x02, 0x02);

        switch (chip->hardware) {
        case OPTi9XX_HW_82C924:
                snd_miro_write_mask(chip, OPTi9XX_MC_REG(6), 0x02, 0x02);
                snd_miro_write_mask(chip, OPTi9XX_MC_REG(3), 0xf0, 0xff);
                break;
        case OPTi9XX_HW_82C929:
                /* untested init commands for OPTi929 */
                snd_miro_write_mask(chip, OPTi9XX_MC_REG(4), 0x00, 0x0c);
                break;
        default:
                dev_err(chip->card->dev, "chip %d not supported\n", chip->hardware);
                return -EINVAL;
        }

        /* PnP resource says it decodes only 10 bits of address */
        switch (chip->wss_base & 0x3ff) {
        case 0x130:
                chip->wss_base = 0x530;
                wss_base_bits = 0x00;
                break;
        case 0x204:
                chip->wss_base = 0x604;
                wss_base_bits = 0x03;
                break;
        case 0x280:
                chip->wss_base = 0xe80;
                wss_base_bits = 0x01;
                break;
        case 0x340:
                chip->wss_base = 0xf40;
                wss_base_bits = 0x02;
                break;
        default:
                dev_err(chip->card->dev, "WSS port 0x%lx not valid\n", chip->wss_base);
                goto __skip_base;
        }
        snd_miro_write_mask(chip, OPTi9XX_MC_REG(1), wss_base_bits << 4, 0x30);

__skip_base:
        switch (chip->irq) {
        case 5:
                irq_bits = 0x05;
                break;
        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:
                dev_err(chip->card->dev, "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:
                dev_err(chip->card->dev, "WSS dma1 # %d not valid\n", chip->dma1);
                goto __skip_resources;
        }

        if (chip->dma1 == chip->dma2) {
                dev_err(chip->card->dev, "don't want to share dmas\n");
                return -EBUSY;
        }

        switch (chip->dma2) {
        case 0:
        case 1:
                break;
        default:
                dev_err(chip->card->dev, "WSS dma2 # %d not valid\n", chip->dma2);
                goto __skip_resources;
        }
        dma_bits |= 0x04;

        scoped_guard(spinlock_irqsave, &chip->lock) {
                outb(irq_bits << 3 | dma_bits, chip->wss_base);
        }

__skip_resources:
        if (chip->hardware > OPTi9XX_HW_82C928) {
                switch (chip->mpu_port) {
                case 0:
                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:
                        dev_err(chip->card->dev, "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:
                        dev_err(chip->card->dev, "MPU-401 irq # %d not valid\n",
                                chip->mpu_irq);
                        goto __skip_mpu;
                }

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

        return 0;
}

static int snd_miro_opti_check(struct snd_card *card, struct snd_miro *chip)
{
        unsigned char value;

        chip->res_mc_base =
                devm_request_region(card->dev, chip->mc_base,
                                    chip->mc_base_size, "OPTi9xx MC");
        if (chip->res_mc_base == NULL)
                return -ENOMEM;

        value = snd_miro_read(chip, OPTi9XX_MC_REG(1));
        if (value != 0xff && value != inb(chip->mc_base + OPTi9XX_MC_REG(1)))
                if (value == snd_miro_read(chip, OPTi9XX_MC_REG(1)))
                        return 0;

        devm_release_resource(card->dev, chip->res_mc_base);
        chip->res_mc_base = NULL;

        return -ENODEV;
}

static int snd_card_miro_detect(struct snd_card *card,
                                struct snd_miro *chip)
{
        int i, err;

        for (i = OPTi9XX_HW_82C929; i <= OPTi9XX_HW_82C924; i++) {

                err = snd_miro_init(chip, i);
                if (err < 0)
                        return err;

                err = snd_miro_opti_check(card, chip);
                if (err == 0)
                        return 1;
        }

        return -ENODEV;
}

static int snd_card_miro_aci_detect(struct snd_card *card,
                                    struct snd_miro *miro)
{
        unsigned char regval;
        int i;
        struct snd_miro_aci *aci = &aci_device;

        miro->aci = aci;

        aci->card = card;
        mutex_init(&aci->aci_mutex);

        /* get ACI port from OPTi9xx MC 4 */

        regval=inb(miro->mc_base + 4);
        aci->aci_port = (regval & 0x10) ? 0x344 : 0x354;

        miro->res_aci_port =
                devm_request_region(card->dev, aci->aci_port, 3, "miro aci");
        if (miro->res_aci_port == NULL) {
                dev_err(card->dev, "aci i/o area 0x%lx-0x%lx already used.\n",
                        aci->aci_port, aci->aci_port+2);
                return -ENOMEM;
        }

        /* force ACI into a known state */
        for (i = 0; i < 3; i++)
                if (snd_aci_cmd(aci, ACI_ERROR_OP, -1, -1) < 0) {
                        dev_err(card->dev, "can't force aci into known state.\n");
                        return -ENXIO;
                }

        aci->aci_vendor = snd_aci_cmd(aci, ACI_READ_IDCODE, -1, -1);
        aci->aci_product = snd_aci_cmd(aci, ACI_READ_IDCODE, -1, -1);
        if (aci->aci_vendor < 0 || aci->aci_product < 0) {
                dev_err(card->dev, "can't read aci id on 0x%lx.\n",
                        aci->aci_port);
                return -ENXIO;
        }

        aci->aci_version = snd_aci_cmd(aci, ACI_READ_VERSION, -1, -1);
        if (aci->aci_version < 0) {
                dev_err(card->dev, "can't read aci version on 0x%lx.\n",
                        aci->aci_port);
                return -ENXIO;
        }

        if (snd_aci_cmd(aci, ACI_INIT, -1, -1) < 0 ||
            snd_aci_cmd(aci, ACI_ERROR_OP, ACI_ERROR_OP, ACI_ERROR_OP) < 0 ||
            snd_aci_cmd(aci, ACI_ERROR_OP, ACI_ERROR_OP, ACI_ERROR_OP) < 0) {
                dev_err(card->dev, "can't initialize aci.\n");
                return -ENXIO;
        }

        return 0;
}

static int snd_miro_probe(struct snd_card *card)
{
        int error;
        struct snd_miro *miro = card->private_data;
        struct snd_wss *codec;
        struct snd_rawmidi *rmidi;

        if (!miro->res_mc_base) {
                miro->res_mc_base = devm_request_region(card->dev,
                                                        miro->mc_base,
                                                        miro->mc_base_size,
                                                        "miro (OPTi9xx MC)");
                if (miro->res_mc_base == NULL) {
                        dev_err(card->dev, "request for OPTI9xx MC failed\n");
                        return -ENOMEM;
                }
        }

        error = snd_card_miro_aci_detect(card, miro);
        if (error < 0) {
                dev_err(card->dev, "unable to detect aci chip\n");
                return -ENODEV;
        }

        miro->wss_base = port;
        miro->mpu_port = mpu_port;
        miro->irq = irq;
        miro->mpu_irq = mpu_irq;
        miro->dma1 = dma1;
        miro->dma2 = dma2;

        /* init proc interface */
        snd_miro_proc_init(card, miro);

        error = snd_miro_configure(miro);
        if (error)
                return error;

        error = snd_wss_create(card, miro->wss_base + 4, -1,
                               miro->irq, miro->dma1, miro->dma2,
                               WSS_HW_DETECT, 0, &codec);
        if (error < 0)
                return error;

        error = snd_wss_pcm(codec, 0);
        if (error < 0)
                return error;

        error = snd_wss_mixer(codec);
        if (error < 0)
                return error;

        error = snd_wss_timer(codec, 0);
        if (error < 0)
                return error;

        miro->pcm = codec->pcm;

        error = snd_miro_mixer(card, miro);
        if (error < 0)
                return error;

        if (miro->aci->aci_vendor == 'm') {
                /* It looks like a miro sound card. */
                switch (miro->aci->aci_product) {
                case 'A':
                        sprintf(card->shortname, 
                                "miroSOUND PCM1 pro / PCM12");
                        break;
                case 'B':
                        sprintf(card->shortname, 
                                "miroSOUND PCM12");
                        break;
                case 'C':
                        sprintf(card->shortname, 
                                "miroSOUND PCM20 radio");
                        break;
                default:
                        sprintf(card->shortname, 
                                "unknown miro");
                        dev_info(card->dev, "unknown miro aci id\n");
                        break;
                }
        } else {
                dev_info(card->dev, "found unsupported aci card\n");
                sprintf(card->shortname, "unknown Cardinal Technologies");
        }

        strscpy(card->driver, "miro");
        scnprintf(card->longname, sizeof(card->longname),
                  "%s: OPTi%s, %s at 0x%lx, irq %d, dma %d&%d",
                  card->shortname, miro->name, codec->pcm->name,
                  miro->wss_base + 4, miro->irq, miro->dma1, miro->dma2);

        if (mpu_port <= 0 || mpu_port == SNDRV_AUTO_PORT)
                rmidi = NULL;
        else {
                error = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
                                mpu_port, 0, miro->mpu_irq, &rmidi);
                if (error < 0)
                        dev_warn(card->dev, "no MPU-401 device at 0x%lx?\n",
                                 mpu_port);
        }

        if (fm_port > 0 && fm_port != SNDRV_AUTO_PORT) {
                struct snd_opl3 *opl3 = NULL;
                struct snd_opl4 *opl4;

                if (snd_opl4_create(card, fm_port, fm_port - 8,
                                    2, &opl3, &opl4) < 0)
                        dev_warn(card->dev, "no OPL4 device at 0x%lx\n",
                                 fm_port);
        }

        error = snd_set_aci_init_values(miro);
        if (error < 0)
                return error;

        return snd_card_register(card);
}

static int snd_miro_isa_match(struct device *devptr, unsigned int n)
{
#ifdef CONFIG_PNP
        if (snd_miro_pnp_is_probed)
                return 0;
        if (isapnp)
                return 0;
#endif
        return 1;
}

static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
{
        static const long possible_ports[] = {0x530, 0xe80, 0xf40, 0x604, -1};
        static const long possible_mpu_ports[] = {0x330, 0x300, 0x310, 0x320, -1};
        static const int possible_irqs[] = {11, 9, 10, 7, -1};
        static const int possible_mpu_irqs[] = {10, 5, 9, 7, -1};
        static const int possible_dma1s[] = {3, 1, 0, -1};
        static const int possible_dma2s[][2] = { {1, -1}, {0, -1}, {-1, -1},
                                           {0, -1} };

        int error;
        struct snd_miro *miro;
        struct snd_card *card;

        error = snd_devm_card_new(devptr, index, id, THIS_MODULE,
                                  sizeof(struct snd_miro), &card);
        if (error < 0)
                return error;

        miro = card->private_data;

        error = snd_card_miro_detect(card, miro);
        if (error < 0) {
                dev_err(card->dev, "unable to detect OPTi9xx chip\n");
                return -ENODEV;
        }

        if (port == SNDRV_AUTO_PORT) {
                port = snd_legacy_find_free_ioport(possible_ports, 4);
                if (port < 0) {
                        dev_err(card->dev, "unable to find a free WSS port\n");
                        return -EBUSY;
                }
        }

        if (mpu_port == SNDRV_AUTO_PORT) {
                mpu_port = snd_legacy_find_free_ioport(possible_mpu_ports, 2);
                if (mpu_port < 0) {
                        dev_err(card->dev,
                                "unable to find a free MPU401 port\n");
                        return -EBUSY;
                }
        }

        if (irq == SNDRV_AUTO_IRQ) {
                irq = snd_legacy_find_free_irq(possible_irqs);
                if (irq < 0) {
                        dev_err(card->dev, "unable to find a free IRQ\n");
                        return -EBUSY;
                }
        }
        if (mpu_irq == SNDRV_AUTO_IRQ) {
                mpu_irq = snd_legacy_find_free_irq(possible_mpu_irqs);
                if (mpu_irq < 0) {
                        dev_err(card->dev,
                                "unable to find a free MPU401 IRQ\n");
                        return -EBUSY;
                }
        }
        if (dma1 == SNDRV_AUTO_DMA) {
                dma1 = snd_legacy_find_free_dma(possible_dma1s);
                if (dma1 < 0) {
                        dev_err(card->dev, "unable to find a free DMA1\n");
                        return -EBUSY;
                }
        }
        if (dma2 == SNDRV_AUTO_DMA) {
                dma2 = snd_legacy_find_free_dma(possible_dma2s[dma1 % 4]);
                if (dma2 < 0) {
                        dev_err(card->dev, "unable to find a free DMA2\n");
                        return -EBUSY;
                }
        }

        error = snd_miro_probe(card);
        if (error < 0)
                return error;

        dev_set_drvdata(devptr, card);
        return 0;
}

#define DEV_NAME "miro"

static struct isa_driver snd_miro_driver = {
        .match          = snd_miro_isa_match,
        .probe          = snd_miro_isa_probe,
        /* FIXME: suspend/resume */
        .driver         = {
                .name   = DEV_NAME
        },
};

#ifdef CONFIG_PNP

static int snd_card_miro_pnp(struct snd_miro *chip,
                             struct pnp_card_link *card,
                             const struct pnp_card_device_id *pid)
{
        struct pnp_dev *pdev;
        int err;
        struct pnp_dev *devmpu;
        struct pnp_dev *devmc;

        pdev = pnp_request_card_device(card, pid->devs[0].id, NULL);
        if (pdev == NULL)
                return -EBUSY;

        devmpu = pnp_request_card_device(card, pid->devs[1].id, NULL);
        if (devmpu == NULL)
                return -EBUSY;

        devmc = pnp_request_card_device(card, pid->devs[2].id, NULL);
        if (devmc == NULL)
                return -EBUSY;

        err = pnp_activate_dev(pdev);
        if (err < 0) {
                dev_err(chip->card->dev, "AUDIO pnp configure failure: %d\n", err);
                return err;
        }

        err = pnp_activate_dev(devmc);
        if (err < 0) {
                dev_err(chip->card->dev, "MC pnp configure failure: %d\n",
                        err);
                return err;
        }

        port = pnp_port_start(pdev, 1);
        fm_port = pnp_port_start(pdev, 2) + 8;

        /*
         * The MC(0) is never accessed and the miroSOUND PCM20 card does not
         * include it in the PnP resource range. OPTI93x include it.
         */
        chip->mc_base = pnp_port_start(devmc, 0) - 1;
        chip->mc_base_size = pnp_port_len(devmc, 0) + 1;

        irq = pnp_irq(pdev, 0);
        dma1 = pnp_dma(pdev, 0);
        dma2 = pnp_dma(pdev, 1);

        if (mpu_port > 0) {
                err = pnp_activate_dev(devmpu);
                if (err < 0) {
                        dev_err(chip->card->dev, "MPU401 pnp configure failure\n");
                        mpu_port = -1;
                        return err;
                }
                mpu_port = pnp_port_start(devmpu, 0);
                mpu_irq = pnp_irq(devmpu, 0);
        }
        return 0;
}

static int snd_miro_pnp_probe(struct pnp_card_link *pcard,
                              const struct pnp_card_device_id *pid)
{
        struct snd_card *card;
        int err;
        struct snd_miro *miro;

        if (snd_miro_pnp_is_probed)
                return -EBUSY;
        if (!isapnp)
                return -ENODEV;
        err = snd_devm_card_new(&pcard->card->dev, index, id, THIS_MODULE,
                                sizeof(struct snd_miro), &card);
        if (err < 0)
                return err;

        miro = card->private_data;
        miro->card = card;

        err = snd_card_miro_pnp(miro, pcard, pid);
        if (err)
                return err;

        /* only miroSOUND PCM20 and PCM12 == OPTi924 */
        err = snd_miro_init(miro, OPTi9XX_HW_82C924);
        if (err)
                return err;

        err = snd_miro_opti_check(card, miro);
        if (err) {
                dev_err(card->dev, "OPTI chip not found\n");
                return err;
        }

        err = snd_miro_probe(card);
        if (err < 0)
                return err;
        pnp_set_card_drvdata(pcard, card);
        snd_miro_pnp_is_probed = 1;
        return 0;
}

static void snd_miro_pnp_remove(struct pnp_card_link *pcard)
{
        snd_miro_pnp_is_probed = 0;
}

static struct pnp_card_driver miro_pnpc_driver = {
        .flags          = PNP_DRIVER_RES_DISABLE,
        .name           = "miro",
        .id_table       = snd_miro_pnpids,
        .probe          = snd_miro_pnp_probe,
        .remove         = snd_miro_pnp_remove,
};
#endif

static int __init alsa_card_miro_init(void)
{
#ifdef CONFIG_PNP
        pnp_register_card_driver(&miro_pnpc_driver);
        if (snd_miro_pnp_is_probed)
                return 0;
        pnp_unregister_card_driver(&miro_pnpc_driver);
#endif
        return isa_register_driver(&snd_miro_driver, 1);
}

static void __exit alsa_card_miro_exit(void)
{
        if (!snd_miro_pnp_is_probed) {
                isa_unregister_driver(&snd_miro_driver);
                return;
        }
#ifdef CONFIG_PNP
        pnp_unregister_card_driver(&miro_pnpc_driver);
#endif
}

module_init(alsa_card_miro_init)
module_exit(alsa_card_miro_exit)