ice1724.c

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/*
 *   ALSA driver for VT1724 ICEnsemble ICE1724 / VIA VT1724 (Envy24HT)
 *                   VIA VT1720 (Envy24PT)
 *
 *  Copyright (c) 2000 Jaroslav Kysela <[email protected]>
 *                    2002 James Stafford <[email protected]>
 *                    2003 Takashi Iwai <[email protected]>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/rawmidi.h>
#include <sound/initval.h>

#include <sound/asoundef.h>

#include "ice1712.h"
#include "envy24ht.h"

/* lowlevel routines */
#include "amp.h"
#include "revo.h"
#include "aureon.h"
#include "vt1720_mobo.h"
#include "pontis.h"
#include "prodigy192.h"
#include "prodigy_hifi.h"
#include "juli.h"
#include "maya44.h"
#include "phase.h"
#include "wtm.h"
#include "se.h"
#include "quartet.h"

MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
MODULE_DESCRIPTION("VIA ICEnsemble ICE1724/1720 (Envy24HT/PT)");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{"
           REVO_DEVICE_DESC
           AMP_AUDIO2000_DEVICE_DESC
           AUREON_DEVICE_DESC
           VT1720_MOBO_DEVICE_DESC
           PONTIS_DEVICE_DESC
           PRODIGY192_DEVICE_DESC
           PRODIGY_HIFI_DEVICE_DESC
           JULI_DEVICE_DESC
           MAYA44_DEVICE_DESC
           PHASE_DEVICE_DESC
           WTM_DEVICE_DESC
           SE_DEVICE_DESC
           QTET_DEVICE_DESC
        "{VIA,VT1720},"
        "{VIA,VT1724},"
        "{ICEnsemble,Generic ICE1724},"
        "{ICEnsemble,Generic Envy24HT}"
        "{ICEnsemble,Generic Envy24PT}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;  /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;   /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
static char *model[SNDRV_CARDS];

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for ICE1724 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for ICE1724 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable ICE1724 soundcard.");
module_param_array(model, charp, NULL, 0444);
MODULE_PARM_DESC(model, "Use the given board model.");


/* Both VT1720 and VT1724 have the same PCI IDs */
static DEFINE_PCI_DEVICE_TABLE(snd_vt1724_ids) = {
    { PCI_VDEVICE(ICE, PCI_DEVICE_ID_VT1724), 0 },
    { 0, }
};

MODULE_DEVICE_TABLE(pci, snd_vt1724_ids);


static int PRO_RATE_LOCKED;
static int PRO_RATE_RESET = 1;
static unsigned int PRO_RATE_DEFAULT = 44100;

static char *ext_clock_names[1] = { "IEC958 In" };

/*
 *  Basic I/O
 */

/*
 *  default rates, default clock routines
 */

/* check whether the clock mode is spdif-in */
static inline int stdclock_is_spdif_master(struct snd_ice1712 *ice)
{
    return (inb(ICEMT1724(ice, RATE)) & VT1724_SPDIF_MASTER) ? 1 : 0;
}

/*
 * locking rate makes sense only for internal clock mode
 */
static inline int is_pro_rate_locked(struct snd_ice1712 *ice)
{
    return (!ice->is_spdif_master(ice)) && PRO_RATE_LOCKED;
}

/*
 * ac97 section
 */

static unsigned char snd_vt1724_ac97_ready(struct snd_ice1712 *ice)
{
    unsigned char old_cmd;
    int tm;
    for (tm = 0; tm < 0x10000; tm++) {
        old_cmd = inb(ICEMT1724(ice, AC97_CMD));
        if (old_cmd & (VT1724_AC97_WRITE | VT1724_AC97_READ))
            continue;
        if (!(old_cmd & VT1724_AC97_READY))
            continue;
        return old_cmd;
    }
    snd_printd(KERN_ERR "snd_vt1724_ac97_ready: timeout\n");
    return old_cmd;
}

static int snd_vt1724_ac97_wait_bit(struct snd_ice1712 *ice, unsigned char bit)
{
    int tm;
    for (tm = 0; tm < 0x10000; tm++)
        if ((inb(ICEMT1724(ice, AC97_CMD)) & bit) == 0)
            return 0;
    snd_printd(KERN_ERR "snd_vt1724_ac97_wait_bit: timeout\n");
    return -EIO;
}

static void snd_vt1724_ac97_write(struct snd_ac97 *ac97,
                  unsigned short reg,
                  unsigned short val)
{
    struct snd_ice1712 *ice = ac97->private_data;
    unsigned char old_cmd;

    old_cmd = snd_vt1724_ac97_ready(ice);
    old_cmd &= ~VT1724_AC97_ID_MASK;
    old_cmd |= ac97->num;
    outb(reg, ICEMT1724(ice, AC97_INDEX));
    outw(val, ICEMT1724(ice, AC97_DATA));
    outb(old_cmd | VT1724_AC97_WRITE, ICEMT1724(ice, AC97_CMD));
    snd_vt1724_ac97_wait_bit(ice, VT1724_AC97_WRITE);
}

static unsigned short snd_vt1724_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
{
    struct snd_ice1712 *ice = ac97->private_data;
    unsigned char old_cmd;

    old_cmd = snd_vt1724_ac97_ready(ice);
    old_cmd &= ~VT1724_AC97_ID_MASK;
    old_cmd |= ac97->num;
    outb(reg, ICEMT1724(ice, AC97_INDEX));
    outb(old_cmd | VT1724_AC97_READ, ICEMT1724(ice, AC97_CMD));
    if (snd_vt1724_ac97_wait_bit(ice, VT1724_AC97_READ) < 0)
        return ~0;
    return inw(ICEMT1724(ice, AC97_DATA));
}


/*
 * GPIO operations
 */

/* set gpio direction 0 = read, 1 = write */
static void snd_vt1724_set_gpio_dir(struct snd_ice1712 *ice, unsigned int data)
{
    outl(data, ICEREG1724(ice, GPIO_DIRECTION));
    inw(ICEREG1724(ice, GPIO_DIRECTION)); /* dummy read for pci-posting */
}

/* get gpio direction 0 = read, 1 = write */
static unsigned int snd_vt1724_get_gpio_dir(struct snd_ice1712 *ice)
{
    return inl(ICEREG1724(ice, GPIO_DIRECTION));
}

/* set the gpio mask (0 = writable) */
static void snd_vt1724_set_gpio_mask(struct snd_ice1712 *ice, unsigned int data)
{
    outw(data, ICEREG1724(ice, GPIO_WRITE_MASK));
    if (!ice->vt1720) /* VT1720 supports only 16 GPIO bits */
        outb((data >> 16) & 0xff, ICEREG1724(ice, GPIO_WRITE_MASK_22));
    inw(ICEREG1724(ice, GPIO_WRITE_MASK)); /* dummy read for pci-posting */
}

static unsigned int snd_vt1724_get_gpio_mask(struct snd_ice1712 *ice)
{
    unsigned int mask;
    if (!ice->vt1720)
        mask = (unsigned int)inb(ICEREG1724(ice, GPIO_WRITE_MASK_22));
    else
        mask = 0;
    mask = (mask << 16) | inw(ICEREG1724(ice, GPIO_WRITE_MASK));
    return mask;
}

static void snd_vt1724_set_gpio_data(struct snd_ice1712 *ice, unsigned int data)
{
    outw(data, ICEREG1724(ice, GPIO_DATA));
    if (!ice->vt1720)
        outb(data >> 16, ICEREG1724(ice, GPIO_DATA_22));
    inw(ICEREG1724(ice, GPIO_DATA)); /* dummy read for pci-posting */
}

static unsigned int snd_vt1724_get_gpio_data(struct snd_ice1712 *ice)
{
    unsigned int data;
    if (!ice->vt1720)
        data = (unsigned int)inb(ICEREG1724(ice, GPIO_DATA_22));
    else
        data = 0;
    data = (data << 16) | inw(ICEREG1724(ice, GPIO_DATA));
    return data;
}

/*
 * MIDI
 */

static void vt1724_midi_clear_rx(struct snd_ice1712 *ice)
{
    unsigned int count;

    for (count = inb(ICEREG1724(ice, MPU_RXFIFO)); count > 0; --count)
        inb(ICEREG1724(ice, MPU_DATA));
}

static inline struct snd_rawmidi_substream *
get_rawmidi_substream(struct snd_ice1712 *ice, unsigned int stream)
{
    return list_first_entry(&ice->rmidi[0]->streams[stream].substreams,
                struct snd_rawmidi_substream, list);
}

static void enable_midi_irq(struct snd_ice1712 *ice, u8 flag, int enable);

static void vt1724_midi_write(struct snd_ice1712 *ice)
{
    struct snd_rawmidi_substream *s;
    int count, i;
    u8 buffer[32];

    s = get_rawmidi_substream(ice, SNDRV_RAWMIDI_STREAM_OUTPUT);
    count = 31 - inb(ICEREG1724(ice, MPU_TXFIFO));
    if (count > 0) {
        count = snd_rawmidi_transmit(s, buffer, count);
        for (i = 0; i < count; ++i)
            outb(buffer[i], ICEREG1724(ice, MPU_DATA));
    }
    /* mask irq when all bytes have been transmitted.
     * enabled again in output_trigger when the new data comes in.
     */
    enable_midi_irq(ice, VT1724_IRQ_MPU_TX,
            !snd_rawmidi_transmit_empty(s));
}

static void vt1724_midi_read(struct snd_ice1712 *ice)
{
    struct snd_rawmidi_substream *s;
    int count, i;
    u8 buffer[32];

    s = get_rawmidi_substream(ice, SNDRV_RAWMIDI_STREAM_INPUT);
    count = inb(ICEREG1724(ice, MPU_RXFIFO));
    if (count > 0) {
        count = min(count, 32);
        for (i = 0; i < count; ++i)
            buffer[i] = inb(ICEREG1724(ice, MPU_DATA));
        snd_rawmidi_receive(s, buffer, count);
    }
}

/* call with ice->reg_lock */
static void enable_midi_irq(struct snd_ice1712 *ice, u8 flag, int enable)
{
    u8 mask = inb(ICEREG1724(ice, IRQMASK));
    if (enable)
        mask &= ~flag;
    else
        mask |= flag;
    outb(mask, ICEREG1724(ice, IRQMASK));
}

static void vt1724_enable_midi_irq(struct snd_rawmidi_substream *substream,
                   u8 flag, int enable)
{
    struct snd_ice1712 *ice = substream->rmidi->private_data;

    spin_lock_irq(&ice->reg_lock);
    enable_midi_irq(ice, flag, enable);
    spin_unlock_irq(&ice->reg_lock);
}

static int vt1724_midi_output_open(struct snd_rawmidi_substream *s)
{
    return 0;
}

static int vt1724_midi_output_close(struct snd_rawmidi_substream *s)
{
    return 0;
}

static void vt1724_midi_output_trigger(struct snd_rawmidi_substream *s, int up)
{
    struct snd_ice1712 *ice = s->rmidi->private_data;
    unsigned long flags;

    spin_lock_irqsave(&ice->reg_lock, flags);
    if (up) {
        ice->midi_output = 1;
        vt1724_midi_write(ice);
    } else {
        ice->midi_output = 0;
        enable_midi_irq(ice, VT1724_IRQ_MPU_TX, 0);
    }
    spin_unlock_irqrestore(&ice->reg_lock, flags);
}

static void vt1724_midi_output_drain(struct snd_rawmidi_substream *s)
{
    struct snd_ice1712 *ice = s->rmidi->private_data;
    unsigned long timeout;

    vt1724_enable_midi_irq(s, VT1724_IRQ_MPU_TX, 0);
    /* 32 bytes should be transmitted in less than about 12 ms */
    timeout = jiffies + msecs_to_jiffies(15);
    do {
        if (inb(ICEREG1724(ice, MPU_CTRL)) & VT1724_MPU_TX_EMPTY)
            break;
        schedule_timeout_uninterruptible(1);
    } while (time_after(timeout, jiffies));
}

static struct snd_rawmidi_ops vt1724_midi_output_ops = {
    .open = vt1724_midi_output_open,
    .close = vt1724_midi_output_close,
    .trigger = vt1724_midi_output_trigger,
    .drain = vt1724_midi_output_drain,
};

static int vt1724_midi_input_open(struct snd_rawmidi_substream *s)
{
    vt1724_midi_clear_rx(s->rmidi->private_data);
    vt1724_enable_midi_irq(s, VT1724_IRQ_MPU_RX, 1);
    return 0;
}

static int vt1724_midi_input_close(struct snd_rawmidi_substream *s)
{
    vt1724_enable_midi_irq(s, VT1724_IRQ_MPU_RX, 0);
    return 0;
}

static void vt1724_midi_input_trigger(struct snd_rawmidi_substream *s, int up)
{
    struct snd_ice1712 *ice = s->rmidi->private_data;
    unsigned long flags;

    spin_lock_irqsave(&ice->reg_lock, flags);
    if (up) {
        ice->midi_input = 1;
        vt1724_midi_read(ice);
    } else {
        ice->midi_input = 0;
    }
    spin_unlock_irqrestore(&ice->reg_lock, flags);
}

static struct snd_rawmidi_ops vt1724_midi_input_ops = {
    .open = vt1724_midi_input_open,
    .close = vt1724_midi_input_close,
    .trigger = vt1724_midi_input_trigger,
};


/*
 *  Interrupt handler
 */

static irqreturn_t snd_vt1724_interrupt(int irq, void *dev_id)
{
    struct snd_ice1712 *ice = dev_id;
    unsigned char status;
    unsigned char status_mask =
        VT1724_IRQ_MPU_RX | VT1724_IRQ_MPU_TX | VT1724_IRQ_MTPCM;
    int handled = 0;
    int timeout = 0;

    while (1) {
        status = inb(ICEREG1724(ice, IRQSTAT));
        status &= status_mask;
        if (status == 0)
            break;
        spin_lock(&ice->reg_lock);
        if (++timeout > 10) {
            status = inb(ICEREG1724(ice, IRQSTAT));
            printk(KERN_ERR "ice1724: Too long irq loop, "
                   "status = 0x%x\n", status);
            if (status & VT1724_IRQ_MPU_TX) {
                printk(KERN_ERR "ice1724: Disabling MPU_TX\n");
                enable_midi_irq(ice, VT1724_IRQ_MPU_TX, 0);
            }
            spin_unlock(&ice->reg_lock);
            break;
        }
        handled = 1;
        if (status & VT1724_IRQ_MPU_TX) {
            if (ice->midi_output)
                vt1724_midi_write(ice);
            else
                enable_midi_irq(ice, VT1724_IRQ_MPU_TX, 0);
            /* Due to mysterical reasons, MPU_TX is always
             * generated (and can't be cleared) when a PCM
             * playback is going.  So let's ignore at the
             * next loop.
             */
            status_mask &= ~VT1724_IRQ_MPU_TX;
        }
        if (status & VT1724_IRQ_MPU_RX) {
            if (ice->midi_input)
                vt1724_midi_read(ice);
            else
                vt1724_midi_clear_rx(ice);
        }
        /* ack MPU irq */
        outb(status, ICEREG1724(ice, IRQSTAT));
        spin_unlock(&ice->reg_lock);
        if (status & VT1724_IRQ_MTPCM) {
            /*
             * Multi-track PCM
             * PCM assignment are:
             * Playback DMA0 (M/C) = playback_pro_substream
             * Playback DMA1 = playback_con_substream_ds[0]
             * Playback DMA2 = playback_con_substream_ds[1]
             * Playback DMA3 = playback_con_substream_ds[2]
             * Playback DMA4 (SPDIF) = playback_con_substream
             * Record DMA0 = capture_pro_substream
             * Record DMA1 = capture_con_substream
             */
            unsigned char mtstat = inb(ICEMT1724(ice, IRQ));
            if (mtstat & VT1724_MULTI_PDMA0) {
                if (ice->playback_pro_substream)
                    snd_pcm_period_elapsed(ice->playback_pro_substream);
            }
            if (mtstat & VT1724_MULTI_RDMA0) {
                if (ice->capture_pro_substream)
                    snd_pcm_period_elapsed(ice->capture_pro_substream);
            }
            if (mtstat & VT1724_MULTI_PDMA1) {
                if (ice->playback_con_substream_ds[0])
                    snd_pcm_period_elapsed(ice->playback_con_substream_ds[0]);
            }
            if (mtstat & VT1724_MULTI_PDMA2) {
                if (ice->playback_con_substream_ds[1])
                    snd_pcm_period_elapsed(ice->playback_con_substream_ds[1]);
            }
            if (mtstat & VT1724_MULTI_PDMA3) {
                if (ice->playback_con_substream_ds[2])
                    snd_pcm_period_elapsed(ice->playback_con_substream_ds[2]);
            }
            if (mtstat & VT1724_MULTI_PDMA4) {
                if (ice->playback_con_substream)
                    snd_pcm_period_elapsed(ice->playback_con_substream);
            }
            if (mtstat & VT1724_MULTI_RDMA1) {
                if (ice->capture_con_substream)
                    snd_pcm_period_elapsed(ice->capture_con_substream);
            }
            /* ack anyway to avoid freeze */
            outb(mtstat, ICEMT1724(ice, IRQ));
            /* ought to really handle this properly */
            if (mtstat & VT1724_MULTI_FIFO_ERR) {
                unsigned char fstat = inb(ICEMT1724(ice, DMA_FIFO_ERR));
                outb(fstat, ICEMT1724(ice, DMA_FIFO_ERR));
                outb(VT1724_MULTI_FIFO_ERR | inb(ICEMT1724(ice, DMA_INT_MASK)), ICEMT1724(ice, DMA_INT_MASK));
                /* If I don't do this, I get machine lockup due to continual interrupts */
            }

        }
    }
    return IRQ_RETVAL(handled);
}

/*
 *  PCM code - professional part (multitrack)
 */

static unsigned int rates[] = {
    8000, 9600, 11025, 12000, 16000, 22050, 24000,
    32000, 44100, 48000, 64000, 88200, 96000,
    176400, 192000,
};

static struct snd_pcm_hw_constraint_list hw_constraints_rates_96 = {
    .count = ARRAY_SIZE(rates) - 2, /* up to 96000 */
    .list = rates,
    .mask = 0,
};

static struct snd_pcm_hw_constraint_list hw_constraints_rates_48 = {
    .count = ARRAY_SIZE(rates) - 5, /* up to 48000 */
    .list = rates,
    .mask = 0,
};

static struct snd_pcm_hw_constraint_list hw_constraints_rates_192 = {
    .count = ARRAY_SIZE(rates),
    .list = rates,
    .mask = 0,
};

struct vt1724_pcm_reg {
    unsigned int addr;  /* ADDR register offset */
    unsigned int size;  /* SIZE register offset */
    unsigned int count; /* COUNT register offset */
    unsigned int start; /* start & pause bit */
};

static int snd_vt1724_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    unsigned char what;
    unsigned char old;
    struct snd_pcm_substream *s;

    what = 0;
    snd_pcm_group_for_each_entry(s, substream) {
        if (snd_pcm_substream_chip(s) == ice) {
            const struct vt1724_pcm_reg *reg;
            reg = s->runtime->private_data;
            what |= reg->start;
            snd_pcm_trigger_done(s, substream);
        }
    }

    switch (cmd) {
    case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
    case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
        spin_lock(&ice->reg_lock);
        old = inb(ICEMT1724(ice, DMA_PAUSE));
        if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
            old |= what;
        else
            old &= ~what;
        outb(old, ICEMT1724(ice, DMA_PAUSE));
        spin_unlock(&ice->reg_lock);
        break;

    case SNDRV_PCM_TRIGGER_START:
    case SNDRV_PCM_TRIGGER_STOP:
    case SNDRV_PCM_TRIGGER_SUSPEND:
        spin_lock(&ice->reg_lock);
        old = inb(ICEMT1724(ice, DMA_CONTROL));
        if (cmd == SNDRV_PCM_TRIGGER_START)
            old |= what;
        else
            old &= ~what;
        outb(old, ICEMT1724(ice, DMA_CONTROL));
        spin_unlock(&ice->reg_lock);
        break;

    case SNDRV_PCM_TRIGGER_RESUME:
        /* apps will have to restart stream */
        break;

    default:
        return -EINVAL;
    }
    return 0;
}

/*
 */

#define DMA_STARTS  (VT1724_RDMA0_START|VT1724_PDMA0_START|VT1724_RDMA1_START|\
    VT1724_PDMA1_START|VT1724_PDMA2_START|VT1724_PDMA3_START|VT1724_PDMA4_START)
#define DMA_PAUSES  (VT1724_RDMA0_PAUSE|VT1724_PDMA0_PAUSE|VT1724_RDMA1_PAUSE|\
    VT1724_PDMA1_PAUSE|VT1724_PDMA2_PAUSE|VT1724_PDMA3_PAUSE|VT1724_PDMA4_PAUSE)

static const unsigned int stdclock_rate_list[16] = {
    48000, 24000, 12000, 9600, 32000, 16000, 8000, 96000, 44100,
    22050, 11025, 88200, 176400, 0, 192000, 64000
};

static unsigned int stdclock_get_rate(struct snd_ice1712 *ice)
{
    unsigned int rate;
    rate = stdclock_rate_list[inb(ICEMT1724(ice, RATE)) & 15];
    return rate;
}

static void stdclock_set_rate(struct snd_ice1712 *ice, unsigned int rate)
{
    int i;
    for (i = 0; i < ARRAY_SIZE(stdclock_rate_list); i++) {
        if (stdclock_rate_list[i] == rate) {
            outb(i, ICEMT1724(ice, RATE));
            return;
        }
    }
}

static unsigned char stdclock_set_mclk(struct snd_ice1712 *ice,
                       unsigned int rate)
{
    unsigned char val, old;
    /* check MT02 */
    if (ice->eeprom.data[ICE_EEP2_ACLINK] & VT1724_CFG_PRO_I2S) {
        val = old = inb(ICEMT1724(ice, I2S_FORMAT));
        if (rate > 96000)
            val |= VT1724_MT_I2S_MCLK_128X; /* 128x MCLK */
        else
            val &= ~VT1724_MT_I2S_MCLK_128X; /* 256x MCLK */
        if (val != old) {
            outb(val, ICEMT1724(ice, I2S_FORMAT));
            /* master clock changed */
            return 1;
        }
    }
    /* no change in master clock */
    return 0;
}

static int snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate,
                    int force)
{
    unsigned long flags;
    unsigned char mclk_change;
    unsigned int i, old_rate;

    if (rate > ice->hw_rates->list[ice->hw_rates->count - 1])
        return -EINVAL;

    spin_lock_irqsave(&ice->reg_lock, flags);
    if ((inb(ICEMT1724(ice, DMA_CONTROL)) & DMA_STARTS) ||
        (inb(ICEMT1724(ice, DMA_PAUSE)) & DMA_PAUSES)) {
        /* running? we cannot change the rate now... */
        spin_unlock_irqrestore(&ice->reg_lock, flags);
        return ((rate == ice->cur_rate) && !force) ? 0 : -EBUSY;
    }
    if (!force && is_pro_rate_locked(ice)) {
        /* comparing required and current rate - makes sense for
         * internal clock only */
        spin_unlock_irqrestore(&ice->reg_lock, flags);
        return (rate == ice->cur_rate) ? 0 : -EBUSY;
    }

    if (force || !ice->is_spdif_master(ice)) {
        /* force means the rate was switched by ucontrol, otherwise
         * setting clock rate for internal clock mode */
        old_rate = ice->get_rate(ice);
        if (force || (old_rate != rate))
            ice->set_rate(ice, rate);
        else if (rate == ice->cur_rate) {
            spin_unlock_irqrestore(&ice->reg_lock, flags);
            return 0;
        }
    }

    ice->cur_rate = rate;

    /* setting master clock */
    mclk_change = ice->set_mclk(ice, rate);

    spin_unlock_irqrestore(&ice->reg_lock, flags);

    if (mclk_change && ice->gpio.i2s_mclk_changed)
        ice->gpio.i2s_mclk_changed(ice);
    if (ice->gpio.set_pro_rate)
        ice->gpio.set_pro_rate(ice, rate);

    /* set up codecs */
    for (i = 0; i < ice->akm_codecs; i++) {
        if (ice->akm[i].ops.set_rate_val)
            ice->akm[i].ops.set_rate_val(&ice->akm[i], rate);
    }
    if (ice->spdif.ops.setup_rate)
        ice->spdif.ops.setup_rate(ice, rate);

    return 0;
}

static int snd_vt1724_pcm_hw_params(struct snd_pcm_substream *substream,
                    struct snd_pcm_hw_params *hw_params)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    int i, chs, err;

    chs = params_channels(hw_params);
    mutex_lock(&ice->open_mutex);
    /* mark surround channels */
    if (substream == ice->playback_pro_substream) {
        /* PDMA0 can be multi-channel up to 8 */
        chs = chs / 2 - 1;
        for (i = 0; i < chs; i++) {
            if (ice->pcm_reserved[i] &&
                ice->pcm_reserved[i] != substream) {
                mutex_unlock(&ice->open_mutex);
                return -EBUSY;
            }
            ice->pcm_reserved[i] = substream;
        }
        for (; i < 3; i++) {
            if (ice->pcm_reserved[i] == substream)
                ice->pcm_reserved[i] = NULL;
        }
    } else {
        for (i = 0; i < 3; i++) {
            /* check individual playback stream */
            if (ice->playback_con_substream_ds[i] == substream) {
                if (ice->pcm_reserved[i] &&
                    ice->pcm_reserved[i] != substream) {
                    mutex_unlock(&ice->open_mutex);
                    return -EBUSY;
                }
                ice->pcm_reserved[i] = substream;
                break;
            }
        }
    }
    mutex_unlock(&ice->open_mutex);

    err = snd_vt1724_set_pro_rate(ice, params_rate(hw_params), 0);
    if (err < 0)
        return err;

    return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}

static int snd_vt1724_pcm_hw_free(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    int i;

    mutex_lock(&ice->open_mutex);
    /* unmark surround channels */
    for (i = 0; i < 3; i++)
        if (ice->pcm_reserved[i] == substream)
            ice->pcm_reserved[i] = NULL;
    mutex_unlock(&ice->open_mutex);
    return snd_pcm_lib_free_pages(substream);
}

static int snd_vt1724_playback_pro_prepare(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    unsigned char val;
    unsigned int size;

    spin_lock_irq(&ice->reg_lock);
    val = (8 - substream->runtime->channels) >> 1;
    outb(val, ICEMT1724(ice, BURST));

    outl(substream->runtime->dma_addr, ICEMT1724(ice, PLAYBACK_ADDR));

    size = (snd_pcm_lib_buffer_bytes(substream) >> 2) - 1;
    /* outl(size, ICEMT1724(ice, PLAYBACK_SIZE)); */
    outw(size, ICEMT1724(ice, PLAYBACK_SIZE));
    outb(size >> 16, ICEMT1724(ice, PLAYBACK_SIZE) + 2);
    size = (snd_pcm_lib_period_bytes(substream) >> 2) - 1;
    /* outl(size, ICEMT1724(ice, PLAYBACK_COUNT)); */
    outw(size, ICEMT1724(ice, PLAYBACK_COUNT));
    outb(size >> 16, ICEMT1724(ice, PLAYBACK_COUNT) + 2);

    spin_unlock_irq(&ice->reg_lock);

    /*
    printk(KERN_DEBUG "pro prepare: ch = %d, addr = 0x%x, "
           "buffer = 0x%x, period = 0x%x\n",
           substream->runtime->channels,
           (unsigned int)substream->runtime->dma_addr,
           snd_pcm_lib_buffer_bytes(substream),
           snd_pcm_lib_period_bytes(substream));
    */
    return 0;
}

static snd_pcm_uframes_t snd_vt1724_playback_pro_pointer(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    size_t ptr;

    if (!(inl(ICEMT1724(ice, DMA_CONTROL)) & VT1724_PDMA0_START))
        return 0;
#if 0 /* read PLAYBACK_ADDR */
    ptr = inl(ICEMT1724(ice, PLAYBACK_ADDR));
    if (ptr < substream->runtime->dma_addr) {
        snd_printd("ice1724: invalid negative ptr\n");
        return 0;
    }
    ptr -= substream->runtime->dma_addr;
    ptr = bytes_to_frames(substream->runtime, ptr);
    if (ptr >= substream->runtime->buffer_size) {
        snd_printd("ice1724: invalid ptr %d (size=%d)\n",
               (int)ptr, (int)substream->runtime->period_size);
        return 0;
    }
#else /* read PLAYBACK_SIZE */
    ptr = inl(ICEMT1724(ice, PLAYBACK_SIZE)) & 0xffffff;
    ptr = (ptr + 1) << 2;
    ptr = bytes_to_frames(substream->runtime, ptr);
    if (!ptr)
        ;
    else if (ptr <= substream->runtime->buffer_size)
        ptr = substream->runtime->buffer_size - ptr;
    else {
        snd_printd("ice1724: invalid ptr %d (size=%d)\n",
               (int)ptr, (int)substream->runtime->buffer_size);
        ptr = 0;
    }
#endif
    return ptr;
}

static int snd_vt1724_pcm_prepare(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    const struct vt1724_pcm_reg *reg = substream->runtime->private_data;

    spin_lock_irq(&ice->reg_lock);
    outl(substream->runtime->dma_addr, ice->profi_port + reg->addr);
    outw((snd_pcm_lib_buffer_bytes(substream) >> 2) - 1,
         ice->profi_port + reg->size);
    outw((snd_pcm_lib_period_bytes(substream) >> 2) - 1,
         ice->profi_port + reg->count);
    spin_unlock_irq(&ice->reg_lock);
    return 0;
}

static snd_pcm_uframes_t snd_vt1724_pcm_pointer(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    const struct vt1724_pcm_reg *reg = substream->runtime->private_data;
    size_t ptr;

    if (!(inl(ICEMT1724(ice, DMA_CONTROL)) & reg->start))
        return 0;
#if 0 /* use ADDR register */
    ptr = inl(ice->profi_port + reg->addr);
    ptr -= substream->runtime->dma_addr;
    return bytes_to_frames(substream->runtime, ptr);
#else /* use SIZE register */
    ptr = inw(ice->profi_port + reg->size);
    ptr = (ptr + 1) << 2;
    ptr = bytes_to_frames(substream->runtime, ptr);
    if (!ptr)
        ;
    else if (ptr <= substream->runtime->buffer_size)
        ptr = substream->runtime->buffer_size - ptr;
    else {
        snd_printd("ice1724: invalid ptr %d (size=%d)\n",
               (int)ptr, (int)substream->runtime->buffer_size);
        ptr = 0;
    }
    return ptr;
#endif
}

static const struct vt1724_pcm_reg vt1724_pdma0_reg = {
    .addr = VT1724_MT_PLAYBACK_ADDR,
    .size = VT1724_MT_PLAYBACK_SIZE,
    .count = VT1724_MT_PLAYBACK_COUNT,
    .start = VT1724_PDMA0_START,
};

static const struct vt1724_pcm_reg vt1724_pdma4_reg = {
    .addr = VT1724_MT_PDMA4_ADDR,
    .size = VT1724_MT_PDMA4_SIZE,
    .count = VT1724_MT_PDMA4_COUNT,
    .start = VT1724_PDMA4_START,
};

static const struct vt1724_pcm_reg vt1724_rdma0_reg = {
    .addr = VT1724_MT_CAPTURE_ADDR,
    .size = VT1724_MT_CAPTURE_SIZE,
    .count = VT1724_MT_CAPTURE_COUNT,
    .start = VT1724_RDMA0_START,
};

static const struct vt1724_pcm_reg vt1724_rdma1_reg = {
    .addr = VT1724_MT_RDMA1_ADDR,
    .size = VT1724_MT_RDMA1_SIZE,
    .count = VT1724_MT_RDMA1_COUNT,
    .start = VT1724_RDMA1_START,
};

#define vt1724_playback_pro_reg vt1724_pdma0_reg
#define vt1724_playback_spdif_reg vt1724_pdma4_reg
#define vt1724_capture_pro_reg vt1724_rdma0_reg
#define vt1724_capture_spdif_reg vt1724_rdma1_reg

static const struct snd_pcm_hardware snd_vt1724_playback_pro = {
    .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                 SNDRV_PCM_INFO_MMAP_VALID |
                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START),
    .formats =      SNDRV_PCM_FMTBIT_S32_LE,
    .rates =        SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_192000,
    .rate_min =     8000,
    .rate_max =     192000,
    .channels_min =     2,
    .channels_max =     8,
    .buffer_bytes_max = (1UL << 21),    /* 19bits dword */
    .period_bytes_min = 8 * 4 * 2,  /* FIXME: constraints needed */
    .period_bytes_max = (1UL << 21),
    .periods_min =      2,
    .periods_max =      1024,
};

static const struct snd_pcm_hardware snd_vt1724_spdif = {
    .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                 SNDRV_PCM_INFO_MMAP_VALID |
                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START),
    .formats =      SNDRV_PCM_FMTBIT_S32_LE,
    .rates =            (SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100|
                 SNDRV_PCM_RATE_48000|SNDRV_PCM_RATE_88200|
                 SNDRV_PCM_RATE_96000|SNDRV_PCM_RATE_176400|
                 SNDRV_PCM_RATE_192000),
    .rate_min =     32000,
    .rate_max =     192000,
    .channels_min =     2,
    .channels_max =     2,
    .buffer_bytes_max = (1UL << 18),    /* 16bits dword */
    .period_bytes_min = 2 * 4 * 2,
    .period_bytes_max = (1UL << 18),
    .periods_min =      2,
    .periods_max =      1024,
};

static const struct snd_pcm_hardware snd_vt1724_2ch_stereo = {
    .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                 SNDRV_PCM_INFO_MMAP_VALID |
                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START),
    .formats =      SNDRV_PCM_FMTBIT_S32_LE,
    .rates =        SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_192000,
    .rate_min =     8000,
    .rate_max =     192000,
    .channels_min =     2,
    .channels_max =     2,
    .buffer_bytes_max = (1UL << 18),    /* 16bits dword */
    .period_bytes_min = 2 * 4 * 2,
    .period_bytes_max = (1UL << 18),
    .periods_min =      2,
    .periods_max =      1024,
};

/*
 * set rate constraints
 */
static void set_std_hw_rates(struct snd_ice1712 *ice)
{
    if (ice->eeprom.data[ICE_EEP2_ACLINK] & VT1724_CFG_PRO_I2S) {
        /* I2S */
        /* VT1720 doesn't support more than 96kHz */
        if ((ice->eeprom.data[ICE_EEP2_I2S] & 0x08) && !ice->vt1720)
            ice->hw_rates = &hw_constraints_rates_192;
        else
            ice->hw_rates = &hw_constraints_rates_96;
    } else {
        /* ACLINK */
        ice->hw_rates = &hw_constraints_rates_48;
    }
}

static int set_rate_constraints(struct snd_ice1712 *ice,
                struct snd_pcm_substream *substream)
{
    struct snd_pcm_runtime *runtime = substream->runtime;

    runtime->hw.rate_min = ice->hw_rates->list[0];
    runtime->hw.rate_max = ice->hw_rates->list[ice->hw_rates->count - 1];
    runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
    return snd_pcm_hw_constraint_list(runtime, 0,
                      SNDRV_PCM_HW_PARAM_RATE,
                      ice->hw_rates);
}

/* if the card has the internal rate locked (is_pro_locked), limit runtime
   hw rates to the current internal rate only.
*/
static void constrain_rate_if_locked(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;
    unsigned int rate;
    if (is_pro_rate_locked(ice)) {
        rate = ice->get_rate(ice);
        if (rate >= runtime->hw.rate_min
            && rate <= runtime->hw.rate_max) {
            runtime->hw.rate_min = rate;
            runtime->hw.rate_max = rate;
        }
    }
}


/* multi-channel playback needs alignment 8x32bit regardless of the channels
 * actually used
 */
#define VT1724_BUFFER_ALIGN 0x20

static int snd_vt1724_playback_pro_open(struct snd_pcm_substream *substream)
{
    struct snd_pcm_runtime *runtime = substream->runtime;
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    int chs, num_indeps;

    runtime->private_data = (void *)&vt1724_playback_pro_reg;
    ice->playback_pro_substream = substream;
    runtime->hw = snd_vt1724_playback_pro;
    snd_pcm_set_sync(substream);
    snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
    set_rate_constraints(ice, substream);
    mutex_lock(&ice->open_mutex);
    /* calculate the currently available channels */
    num_indeps = ice->num_total_dacs / 2 - 1;
    for (chs = 0; chs < num_indeps; chs++) {
        if (ice->pcm_reserved[chs])
            break;
    }
    chs = (chs + 1) * 2;
    runtime->hw.channels_max = chs;
    if (chs > 2) /* channels must be even */
        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
    mutex_unlock(&ice->open_mutex);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
                   VT1724_BUFFER_ALIGN);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
                   VT1724_BUFFER_ALIGN);
    constrain_rate_if_locked(substream);
    if (ice->pro_open)
        ice->pro_open(ice, substream);
    return 0;
}

static int snd_vt1724_capture_pro_open(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;

    runtime->private_data = (void *)&vt1724_capture_pro_reg;
    ice->capture_pro_substream = substream;
    runtime->hw = snd_vt1724_2ch_stereo;
    snd_pcm_set_sync(substream);
    snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
    set_rate_constraints(ice, substream);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
                   VT1724_BUFFER_ALIGN);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
                   VT1724_BUFFER_ALIGN);
    constrain_rate_if_locked(substream);
    if (ice->pro_open)
        ice->pro_open(ice, substream);
    return 0;
}

static int snd_vt1724_playback_pro_close(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);

    if (PRO_RATE_RESET)
        snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 0);
    ice->playback_pro_substream = NULL;

    return 0;
}

static int snd_vt1724_capture_pro_close(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);

    if (PRO_RATE_RESET)
        snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 0);
    ice->capture_pro_substream = NULL;
    return 0;
}

static struct snd_pcm_ops snd_vt1724_playback_pro_ops = {
    .open =     snd_vt1724_playback_pro_open,
    .close =    snd_vt1724_playback_pro_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_vt1724_pcm_hw_params,
    .hw_free =  snd_vt1724_pcm_hw_free,
    .prepare =  snd_vt1724_playback_pro_prepare,
    .trigger =  snd_vt1724_pcm_trigger,
    .pointer =  snd_vt1724_playback_pro_pointer,
};

static struct snd_pcm_ops snd_vt1724_capture_pro_ops = {
    .open =     snd_vt1724_capture_pro_open,
    .close =    snd_vt1724_capture_pro_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_vt1724_pcm_hw_params,
    .hw_free =  snd_vt1724_pcm_hw_free,
    .prepare =  snd_vt1724_pcm_prepare,
    .trigger =  snd_vt1724_pcm_trigger,
    .pointer =  snd_vt1724_pcm_pointer,
};

static int __devinit snd_vt1724_pcm_profi(struct snd_ice1712 *ice, int device)
{
    struct snd_pcm *pcm;
    int capt, err;

    if ((ice->eeprom.data[ICE_EEP2_SYSCONF] & VT1724_CFG_ADC_MASK) ==
        VT1724_CFG_ADC_NONE)
        capt = 0;
    else
        capt = 1;
    err = snd_pcm_new(ice->card, "ICE1724", device, 1, capt, &pcm);
    if (err < 0)
        return err;

    snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_vt1724_playback_pro_ops);
    if (capt)
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
            &snd_vt1724_capture_pro_ops);

    pcm->private_data = ice;
    pcm->info_flags = 0;
    strcpy(pcm->name, "ICE1724");

    snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                          snd_dma_pci_data(ice->pci),
                          256*1024, 256*1024);

    ice->pcm_pro = pcm;

    return 0;
}


/*
 * SPDIF PCM
 */

/* update spdif control bits; call with reg_lock */
static void update_spdif_bits(struct snd_ice1712 *ice, unsigned int val)
{
    unsigned char cbit, disabled;

    cbit = inb(ICEREG1724(ice, SPDIF_CFG));
    disabled = cbit & ~VT1724_CFG_SPDIF_OUT_EN;
    if (cbit != disabled)
        outb(disabled, ICEREG1724(ice, SPDIF_CFG));
    outw(val, ICEMT1724(ice, SPDIF_CTRL));
    if (cbit != disabled)
        outb(cbit, ICEREG1724(ice, SPDIF_CFG));
    outw(val, ICEMT1724(ice, SPDIF_CTRL));
}

/* update SPDIF control bits according to the given rate */
static void update_spdif_rate(struct snd_ice1712 *ice, unsigned int rate)
{
    unsigned int val, nval;
    unsigned long flags;

    spin_lock_irqsave(&ice->reg_lock, flags);
    nval = val = inw(ICEMT1724(ice, SPDIF_CTRL));
    nval &= ~(7 << 12);
    switch (rate) {
    case 44100: break;
    case 48000: nval |= 2 << 12; break;
    case 32000: nval |= 3 << 12; break;
    case 88200: nval |= 4 << 12; break;
    case 96000: nval |= 5 << 12; break;
    case 192000: nval |= 6 << 12; break;
    case 176400: nval |= 7 << 12; break;
    }
    if (val != nval)
        update_spdif_bits(ice, nval);
    spin_unlock_irqrestore(&ice->reg_lock, flags);
}

static int snd_vt1724_playback_spdif_prepare(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    if (!ice->force_pdma4)
        update_spdif_rate(ice, substream->runtime->rate);
    return snd_vt1724_pcm_prepare(substream);
}

static int snd_vt1724_playback_spdif_open(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;

    runtime->private_data = (void *)&vt1724_playback_spdif_reg;
    ice->playback_con_substream = substream;
    if (ice->force_pdma4) {
        runtime->hw = snd_vt1724_2ch_stereo;
        set_rate_constraints(ice, substream);
    } else
        runtime->hw = snd_vt1724_spdif;
    snd_pcm_set_sync(substream);
    snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
                   VT1724_BUFFER_ALIGN);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
                   VT1724_BUFFER_ALIGN);
    constrain_rate_if_locked(substream);
    if (ice->spdif.ops.open)
        ice->spdif.ops.open(ice, substream);
    return 0;
}

static int snd_vt1724_playback_spdif_close(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);

    if (PRO_RATE_RESET)
        snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 0);
    ice->playback_con_substream = NULL;
    if (ice->spdif.ops.close)
        ice->spdif.ops.close(ice, substream);

    return 0;
}

static int snd_vt1724_capture_spdif_open(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;

    runtime->private_data = (void *)&vt1724_capture_spdif_reg;
    ice->capture_con_substream = substream;
    if (ice->force_rdma1) {
        runtime->hw = snd_vt1724_2ch_stereo;
        set_rate_constraints(ice, substream);
    } else
        runtime->hw = snd_vt1724_spdif;
    snd_pcm_set_sync(substream);
    snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
                   VT1724_BUFFER_ALIGN);
    snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
                   VT1724_BUFFER_ALIGN);
    constrain_rate_if_locked(substream);
    if (ice->spdif.ops.open)
        ice->spdif.ops.open(ice, substream);
    return 0;
}

static int snd_vt1724_capture_spdif_close(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);

    if (PRO_RATE_RESET)
        snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 0);
    ice->capture_con_substream = NULL;
    if (ice->spdif.ops.close)
        ice->spdif.ops.close(ice, substream);

    return 0;
}

static struct snd_pcm_ops snd_vt1724_playback_spdif_ops = {
    .open =     snd_vt1724_playback_spdif_open,
    .close =    snd_vt1724_playback_spdif_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_vt1724_pcm_hw_params,
    .hw_free =  snd_vt1724_pcm_hw_free,
    .prepare =  snd_vt1724_playback_spdif_prepare,
    .trigger =  snd_vt1724_pcm_trigger,
    .pointer =  snd_vt1724_pcm_pointer,
};

static struct snd_pcm_ops snd_vt1724_capture_spdif_ops = {
    .open =     snd_vt1724_capture_spdif_open,
    .close =    snd_vt1724_capture_spdif_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_vt1724_pcm_hw_params,
    .hw_free =  snd_vt1724_pcm_hw_free,
    .prepare =  snd_vt1724_pcm_prepare,
    .trigger =  snd_vt1724_pcm_trigger,
    .pointer =  snd_vt1724_pcm_pointer,
};


static int __devinit snd_vt1724_pcm_spdif(struct snd_ice1712 *ice, int device)
{
    char *name;
    struct snd_pcm *pcm;
    int play, capt;
    int err;

    if (ice->force_pdma4 ||
        (ice->eeprom.data[ICE_EEP2_SPDIF] & VT1724_CFG_SPDIF_OUT_INT)) {
        play = 1;
        ice->has_spdif = 1;
    } else
        play = 0;
    if (ice->force_rdma1 ||
        (ice->eeprom.data[ICE_EEP2_SPDIF] & VT1724_CFG_SPDIF_IN)) {
        capt = 1;
        ice->has_spdif = 1;
    } else
        capt = 0;
    if (!play && !capt)
        return 0; /* no spdif device */

    if (ice->force_pdma4 || ice->force_rdma1)
        name = "ICE1724 Secondary";
    else
        name = "ICE1724 IEC958";
    err = snd_pcm_new(ice->card, name, device, play, capt, &pcm);
    if (err < 0)
        return err;

    if (play)
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
                &snd_vt1724_playback_spdif_ops);
    if (capt)
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
                &snd_vt1724_capture_spdif_ops);

    pcm->private_data = ice;
    pcm->info_flags = 0;
    strcpy(pcm->name, name);

    snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                          snd_dma_pci_data(ice->pci),
                          256*1024, 256*1024);

    ice->pcm = pcm;

    return 0;
}


/*
 * independent surround PCMs
 */

static const struct vt1724_pcm_reg vt1724_playback_dma_regs[3] = {
    {
        .addr = VT1724_MT_PDMA1_ADDR,
        .size = VT1724_MT_PDMA1_SIZE,
        .count = VT1724_MT_PDMA1_COUNT,
        .start = VT1724_PDMA1_START,
    },
    {
        .addr = VT1724_MT_PDMA2_ADDR,
        .size = VT1724_MT_PDMA2_SIZE,
        .count = VT1724_MT_PDMA2_COUNT,
        .start = VT1724_PDMA2_START,
    },
    {
        .addr = VT1724_MT_PDMA3_ADDR,
        .size = VT1724_MT_PDMA3_SIZE,
        .count = VT1724_MT_PDMA3_COUNT,
        .start = VT1724_PDMA3_START,
    },
};

static int snd_vt1724_playback_indep_prepare(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    unsigned char val;

    spin_lock_irq(&ice->reg_lock);
    val = 3 - substream->number;
    if (inb(ICEMT1724(ice, BURST)) < val)
        outb(val, ICEMT1724(ice, BURST));
    spin_unlock_irq(&ice->reg_lock);
    return snd_vt1724_pcm_prepare(substream);
}

static int snd_vt1724_playback_indep_open(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
    struct snd_pcm_runtime *runtime = substream->runtime;

    mutex_lock(&ice->open_mutex);
    /* already used by PDMA0? */
    if (ice->pcm_reserved[substream->number]) {
        mutex_unlock(&ice->open_mutex);
        return -EBUSY; /* FIXME: should handle blocking mode properly */
    }
    mutex_unlock(&ice->open_mutex);
    runtime->private_data = (void *)&vt1724_playback_dma_regs[substream->number];
    ice->playback_con_substream_ds[substream->number] = substream;
    runtime->hw = snd_vt1724_2ch_stereo;
    snd_pcm_set_sync(substream);
    snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
    set_rate_constraints(ice, substream);
    return 0;
}

static int snd_vt1724_playback_indep_close(struct snd_pcm_substream *substream)
{
    struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);

    if (PRO_RATE_RESET)
        snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 0);
    ice->playback_con_substream_ds[substream->number] = NULL;
    ice->pcm_reserved[substream->number] = NULL;

    return 0;
}

static struct snd_pcm_ops snd_vt1724_playback_indep_ops = {
    .open =     snd_vt1724_playback_indep_open,
    .close =    snd_vt1724_playback_indep_close,
    .ioctl =    snd_pcm_lib_ioctl,
    .hw_params =    snd_vt1724_pcm_hw_params,
    .hw_free =  snd_vt1724_pcm_hw_free,
    .prepare =  snd_vt1724_playback_indep_prepare,
    .trigger =  snd_vt1724_pcm_trigger,
    .pointer =  snd_vt1724_pcm_pointer,
};


static int __devinit snd_vt1724_pcm_indep(struct snd_ice1712 *ice, int device)
{
    struct snd_pcm *pcm;
    int play;
    int err;

    play = ice->num_total_dacs / 2 - 1;
    if (play <= 0)
        return 0;

    err = snd_pcm_new(ice->card, "ICE1724 Surrounds", device, play, 0, &pcm);
    if (err < 0)
        return err;

    snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
            &snd_vt1724_playback_indep_ops);

    pcm->private_data = ice;
    pcm->info_flags = 0;
    strcpy(pcm->name, "ICE1724 Surround PCM");

    snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                          snd_dma_pci_data(ice->pci),
                          256*1024, 256*1024);

    ice->pcm_ds = pcm;

    return 0;
}


/*
 *  Mixer section
 */

static int __devinit snd_vt1724_ac97_mixer(struct snd_ice1712 *ice)
{
    int err;

    if (!(ice->eeprom.data[ICE_EEP2_ACLINK] & VT1724_CFG_PRO_I2S)) {
        struct snd_ac97_bus *pbus;
        struct snd_ac97_template ac97;
        static struct snd_ac97_bus_ops ops = {
            .write = snd_vt1724_ac97_write,
            .read = snd_vt1724_ac97_read,
        };

        /* cold reset */
        outb(inb(ICEMT1724(ice, AC97_CMD)) | 0x80, ICEMT1724(ice, AC97_CMD));
        mdelay(5); /* FIXME */
        outb(inb(ICEMT1724(ice, AC97_CMD)) & ~0x80, ICEMT1724(ice, AC97_CMD));

        err = snd_ac97_bus(ice->card, 0, &ops, NULL, &pbus);
        if (err < 0)
            return err;
        memset(&ac97, 0, sizeof(ac97));
        ac97.private_data = ice;
        err = snd_ac97_mixer(pbus, &ac97, &ice->ac97);
        if (err < 0)
            printk(KERN_WARNING "ice1712: cannot initialize pro ac97, skipped\n");
        else
            return 0;
    }
    /* I2S mixer only */
    strcat(ice->card->mixername, "ICE1724 - multitrack");
    return 0;
}

/*
 *
 */

static inline unsigned int eeprom_triple(struct snd_ice1712 *ice, int idx)
{
    return (unsigned int)ice->eeprom.data[idx] | \
        ((unsigned int)ice->eeprom.data[idx + 1] << 8) | \
        ((unsigned int)ice->eeprom.data[idx + 2] << 16);
}

static void snd_vt1724_proc_read(struct snd_info_entry *entry,
                 struct snd_info_buffer *buffer)
{
    struct snd_ice1712 *ice = entry->private_data;
    unsigned int idx;

    snd_iprintf(buffer, "%s\n\n", ice->card->longname);
    snd_iprintf(buffer, "EEPROM:\n");

    snd_iprintf(buffer, "  Subvendor        : 0x%x\n", ice->eeprom.subvendor);
    snd_iprintf(buffer, "  Size             : %i bytes\n", ice->eeprom.size);
    snd_iprintf(buffer, "  Version          : %i\n", ice->eeprom.version);
    snd_iprintf(buffer, "  System Config    : 0x%x\n",
            ice->eeprom.data[ICE_EEP2_SYSCONF]);
    snd_iprintf(buffer, "  ACLink           : 0x%x\n",
            ice->eeprom.data[ICE_EEP2_ACLINK]);
    snd_iprintf(buffer, "  I2S              : 0x%x\n",
            ice->eeprom.data[ICE_EEP2_I2S]);
    snd_iprintf(buffer, "  S/PDIF           : 0x%x\n",
            ice->eeprom.data[ICE_EEP2_SPDIF]);
    snd_iprintf(buffer, "  GPIO direction   : 0x%x\n",
            ice->eeprom.gpiodir);
    snd_iprintf(buffer, "  GPIO mask        : 0x%x\n",
            ice->eeprom.gpiomask);
    snd_iprintf(buffer, "  GPIO state       : 0x%x\n",
            ice->eeprom.gpiostate);
    for (idx = 0x12; idx < ice->eeprom.size; idx++)
        snd_iprintf(buffer, "  Extra #%02i        : 0x%x\n",
                idx, ice->eeprom.data[idx]);

    snd_iprintf(buffer, "\nRegisters:\n");

    snd_iprintf(buffer, "  PSDOUT03 : 0x%08x\n",
            (unsigned)inl(ICEMT1724(ice, ROUTE_PLAYBACK)));
    for (idx = 0x0; idx < 0x20 ; idx++)
        snd_iprintf(buffer, "  CCS%02x    : 0x%02x\n",
                idx, inb(ice->port+idx));
    for (idx = 0x0; idx < 0x30 ; idx++)
        snd_iprintf(buffer, "  MT%02x     : 0x%02x\n",
                idx, inb(ice->profi_port+idx));
}

static void __devinit snd_vt1724_proc_init(struct snd_ice1712 *ice)
{
    struct snd_info_entry *entry;

    if (!snd_card_proc_new(ice->card, "ice1724", &entry))
        snd_info_set_text_ops(entry, ice, snd_vt1724_proc_read);
}

/*
 *
 */

static int snd_vt1724_eeprom_info(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_info *uinfo)
{
    uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
    uinfo->count = sizeof(struct snd_ice1712_eeprom);
    return 0;
}

static int snd_vt1724_eeprom_get(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

    memcpy(ucontrol->value.bytes.data, &ice->eeprom, sizeof(ice->eeprom));
    return 0;
}

static struct snd_kcontrol_new snd_vt1724_eeprom __devinitdata = {
    .iface = SNDRV_CTL_ELEM_IFACE_CARD,
    .name = "ICE1724 EEPROM",
    .access = SNDRV_CTL_ELEM_ACCESS_READ,
    .info = snd_vt1724_eeprom_info,
    .get = snd_vt1724_eeprom_get
};

/*
 */
static int snd_vt1724_spdif_info(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_info *uinfo)
{
    uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
    uinfo->count = 1;
    return 0;
}

static unsigned int encode_spdif_bits(struct snd_aes_iec958 *diga)
{
    unsigned int val, rbits;

    val = diga->status[0] & 0x03; /* professional, non-audio */
    if (val & 0x01) {
        /* professional */
        if ((diga->status[0] & IEC958_AES0_PRO_EMPHASIS) ==
            IEC958_AES0_PRO_EMPHASIS_5015)
            val |= 1U << 3;
        rbits = (diga->status[4] >> 3) & 0x0f;
        if (rbits) {
            switch (rbits) {
            case 2: val |= 5 << 12; break; /* 96k */
            case 3: val |= 6 << 12; break; /* 192k */
            case 10: val |= 4 << 12; break; /* 88.2k */
            case 11: val |= 7 << 12; break; /* 176.4k */
            }
        } else {
            switch (diga->status[0] & IEC958_AES0_PRO_FS) {
            case IEC958_AES0_PRO_FS_44100:
                break;
            case IEC958_AES0_PRO_FS_32000:
                val |= 3U << 12;
                break;
            default:
                val |= 2U << 12;
                break;
            }
        }
    } else {
        /* consumer */
        val |= diga->status[1] & 0x04; /* copyright */
        if ((diga->status[0] & IEC958_AES0_CON_EMPHASIS) ==
            IEC958_AES0_CON_EMPHASIS_5015)
            val |= 1U << 3;
        val |= (unsigned int)(diga->status[1] & 0x3f) << 4; /* category */
        val |= (unsigned int)(diga->status[3] & IEC958_AES3_CON_FS) << 12; /* fs */
    }
    return val;
}

static void decode_spdif_bits(struct snd_aes_iec958 *diga, unsigned int val)
{
    memset(diga->status, 0, sizeof(diga->status));
    diga->status[0] = val & 0x03; /* professional, non-audio */
    if (val & 0x01) {
        /* professional */
        if (val & (1U << 3))
            diga->status[0] |= IEC958_AES0_PRO_EMPHASIS_5015;
        switch ((val >> 12) & 0x7) {
        case 0:
            break;
        case 2:
            diga->status[0] |= IEC958_AES0_PRO_FS_32000;
            break;
        default:
            diga->status[0] |= IEC958_AES0_PRO_FS_48000;
            break;
        }
    } else {
        /* consumer */
        diga->status[0] |= val & (1U << 2); /* copyright */
        if (val & (1U << 3))
            diga->status[0] |= IEC958_AES0_CON_EMPHASIS_5015;
        diga->status[1] |= (val >> 4) & 0x3f; /* category */
        diga->status[3] |= (val >> 12) & 0x07; /* fs */
    }
}

static int snd_vt1724_spdif_default_get(struct snd_kcontrol *kcontrol,
                    struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    unsigned int val;
    val = inw(ICEMT1724(ice, SPDIF_CTRL));
    decode_spdif_bits(&ucontrol->value.iec958, val);
    return 0;
}

static int snd_vt1724_spdif_default_put(struct snd_kcontrol *kcontrol,
                     struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    unsigned int val, old;

    val = encode_spdif_bits(&ucontrol->value.iec958);
    spin_lock_irq(&ice->reg_lock);
    old = inw(ICEMT1724(ice, SPDIF_CTRL));
    if (val != old)
        update_spdif_bits(ice, val);
    spin_unlock_irq(&ice->reg_lock);
    return val != old;
}

static struct snd_kcontrol_new snd_vt1724_spdif_default __devinitdata =
{
    .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
    .name =         SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
    .info =     snd_vt1724_spdif_info,
    .get =      snd_vt1724_spdif_default_get,
    .put =      snd_vt1724_spdif_default_put
};

static int snd_vt1724_spdif_maskc_get(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.iec958.status[0] = IEC958_AES0_NONAUDIO |
                             IEC958_AES0_PROFESSIONAL |
                             IEC958_AES0_CON_NOT_COPYRIGHT |
                             IEC958_AES0_CON_EMPHASIS;
    ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL |
                             IEC958_AES1_CON_CATEGORY;
    ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS;
    return 0;
}

static int snd_vt1724_spdif_maskp_get(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.iec958.status[0] = IEC958_AES0_NONAUDIO |
                             IEC958_AES0_PROFESSIONAL |
                             IEC958_AES0_PRO_FS |
                             IEC958_AES0_PRO_EMPHASIS;
    return 0;
}

static struct snd_kcontrol_new snd_vt1724_spdif_maskc __devinitdata =
{
    .access =   SNDRV_CTL_ELEM_ACCESS_READ,
    .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
    .name =         SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
    .info =     snd_vt1724_spdif_info,
    .get =      snd_vt1724_spdif_maskc_get,
};

static struct snd_kcontrol_new snd_vt1724_spdif_maskp __devinitdata =
{
    .access =   SNDRV_CTL_ELEM_ACCESS_READ,
    .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
    .name =         SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK),
    .info =     snd_vt1724_spdif_info,
    .get =      snd_vt1724_spdif_maskp_get,
};

#define snd_vt1724_spdif_sw_info        snd_ctl_boolean_mono_info

static int snd_vt1724_spdif_sw_get(struct snd_kcontrol *kcontrol,
                   struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    ucontrol->value.integer.value[0] = inb(ICEREG1724(ice, SPDIF_CFG)) &
        VT1724_CFG_SPDIF_OUT_EN ? 1 : 0;
    return 0;
}

static int snd_vt1724_spdif_sw_put(struct snd_kcontrol *kcontrol,
                   struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    unsigned char old, val;

    spin_lock_irq(&ice->reg_lock);
    old = val = inb(ICEREG1724(ice, SPDIF_CFG));
    val &= ~VT1724_CFG_SPDIF_OUT_EN;
    if (ucontrol->value.integer.value[0])
        val |= VT1724_CFG_SPDIF_OUT_EN;
    if (old != val)
        outb(val, ICEREG1724(ice, SPDIF_CFG));
    spin_unlock_irq(&ice->reg_lock);
    return old != val;
}

static struct snd_kcontrol_new snd_vt1724_spdif_switch __devinitdata =
{
    .iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
    /* FIXME: the following conflict with IEC958 Playback Route */
    /* .name =         SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH), */
    .name =         SNDRV_CTL_NAME_IEC958("Output ", NONE, SWITCH),
    .info =     snd_vt1724_spdif_sw_info,
    .get =      snd_vt1724_spdif_sw_get,
    .put =      snd_vt1724_spdif_sw_put
};


#if 0 /* NOT USED YET */
/*
 * GPIO access from extern
 */

#define snd_vt1724_gpio_info        snd_ctl_boolean_mono_info

int snd_vt1724_gpio_get(struct snd_kcontrol *kcontrol,
            struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int shift = kcontrol->private_value & 0xff;
    int invert = (kcontrol->private_value & (1<<24)) ? 1 : 0;

    snd_ice1712_save_gpio_status(ice);
    ucontrol->value.integer.value[0] =
        (snd_ice1712_gpio_read(ice) & (1 << shift) ? 1 : 0) ^ invert;
    snd_ice1712_restore_gpio_status(ice);
    return 0;
}

int snd_ice1712_gpio_put(struct snd_kcontrol *kcontrol,
             struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int shift = kcontrol->private_value & 0xff;
    int invert = (kcontrol->private_value & (1<<24)) ? mask : 0;
    unsigned int val, nval;

    if (kcontrol->private_value & (1 << 31))
        return -EPERM;
    nval = (ucontrol->value.integer.value[0] ? (1 << shift) : 0) ^ invert;
    snd_ice1712_save_gpio_status(ice);
    val = snd_ice1712_gpio_read(ice);
    nval |= val & ~(1 << shift);
    if (val != nval)
        snd_ice1712_gpio_write(ice, nval);
    snd_ice1712_restore_gpio_status(ice);
    return val != nval;
}
#endif /* NOT USED YET */

/*
 *  rate
 */
static int snd_vt1724_pro_internal_clock_info(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_info *uinfo)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int hw_rates_count = ice->hw_rates->count;
    uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
    uinfo->count = 1;

    /* internal clocks */
    uinfo->value.enumerated.items = hw_rates_count;
    /* external clocks */
    if (ice->force_rdma1 ||
        (ice->eeprom.data[ICE_EEP2_SPDIF] & VT1724_CFG_SPDIF_IN))
        uinfo->value.enumerated.items += ice->ext_clock_count;
    /* upper limit - keep at top */
    if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
        uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
    if (uinfo->value.enumerated.item >= hw_rates_count)
        /* ext_clock items */
        strcpy(uinfo->value.enumerated.name,
                ice->ext_clock_names[
                uinfo->value.enumerated.item - hw_rates_count]);
    else
        /* int clock items */
        sprintf(uinfo->value.enumerated.name, "%d",
            ice->hw_rates->list[uinfo->value.enumerated.item]);
    return 0;
}

static int snd_vt1724_pro_internal_clock_get(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    unsigned int i, rate;

    spin_lock_irq(&ice->reg_lock);
    if (ice->is_spdif_master(ice)) {
        ucontrol->value.enumerated.item[0] = ice->hw_rates->count +
            ice->get_spdif_master_type(ice);
    } else {
        rate = ice->get_rate(ice);
        ucontrol->value.enumerated.item[0] = 0;
        for (i = 0; i < ice->hw_rates->count; i++) {
            if (ice->hw_rates->list[i] == rate) {
                ucontrol->value.enumerated.item[0] = i;
                break;
            }
        }
    }
    spin_unlock_irq(&ice->reg_lock);
    return 0;
}

static int stdclock_get_spdif_master_type(struct snd_ice1712 *ice)
{
    /* standard external clock - only single type - SPDIF IN */
    return 0;
}

/* setting clock to external - SPDIF */
static int stdclock_set_spdif_clock(struct snd_ice1712 *ice, int type)
{
    unsigned char oval;
    unsigned char i2s_oval;
    oval = inb(ICEMT1724(ice, RATE));
    outb(oval | VT1724_SPDIF_MASTER, ICEMT1724(ice, RATE));
    /* setting 256fs */
    i2s_oval = inb(ICEMT1724(ice, I2S_FORMAT));
    outb(i2s_oval & ~VT1724_MT_I2S_MCLK_128X, ICEMT1724(ice, I2S_FORMAT));
    return 0;
}


static int snd_vt1724_pro_internal_clock_put(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    unsigned int old_rate, new_rate;
    unsigned int item = ucontrol->value.enumerated.item[0];
    unsigned int first_ext_clock = ice->hw_rates->count;

    if (item >  first_ext_clock + ice->ext_clock_count - 1)
        return -EINVAL;

    /* if rate = 0 => external clock */
    spin_lock_irq(&ice->reg_lock);
    if (ice->is_spdif_master(ice))
        old_rate = 0;
    else
        old_rate = ice->get_rate(ice);
    if (item >= first_ext_clock) {
        /* switching to external clock */
        ice->set_spdif_clock(ice, item - first_ext_clock);
        new_rate = 0;
    } else {
        /* internal on-card clock */
        new_rate = ice->hw_rates->list[item];
        ice->pro_rate_default = new_rate;
        spin_unlock_irq(&ice->reg_lock);
        snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 1);
        spin_lock_irq(&ice->reg_lock);
    }
    spin_unlock_irq(&ice->reg_lock);

    /* the first switch to the ext. clock mode? */
    if (old_rate != new_rate && !new_rate) {
        /* notify akm chips as well */
        unsigned int i;
        if (ice->gpio.set_pro_rate)
            ice->gpio.set_pro_rate(ice, 0);
        for (i = 0; i < ice->akm_codecs; i++) {
            if (ice->akm[i].ops.set_rate_val)
                ice->akm[i].ops.set_rate_val(&ice->akm[i], 0);
        }
    }
    return old_rate != new_rate;
}

static struct snd_kcontrol_new snd_vt1724_pro_internal_clock __devinitdata = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "Multi Track Internal Clock",
    .info = snd_vt1724_pro_internal_clock_info,
    .get = snd_vt1724_pro_internal_clock_get,
    .put = snd_vt1724_pro_internal_clock_put
};

#define snd_vt1724_pro_rate_locking_info    snd_ctl_boolean_mono_info

static int snd_vt1724_pro_rate_locking_get(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.integer.value[0] = PRO_RATE_LOCKED;
    return 0;
}

static int snd_vt1724_pro_rate_locking_put(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int change = 0, nval;

    nval = ucontrol->value.integer.value[0] ? 1 : 0;
    spin_lock_irq(&ice->reg_lock);
    change = PRO_RATE_LOCKED != nval;
    PRO_RATE_LOCKED = nval;
    spin_unlock_irq(&ice->reg_lock);
    return change;
}

static struct snd_kcontrol_new snd_vt1724_pro_rate_locking __devinitdata = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "Multi Track Rate Locking",
    .info = snd_vt1724_pro_rate_locking_info,
    .get = snd_vt1724_pro_rate_locking_get,
    .put = snd_vt1724_pro_rate_locking_put
};

#define snd_vt1724_pro_rate_reset_info      snd_ctl_boolean_mono_info

static int snd_vt1724_pro_rate_reset_get(struct snd_kcontrol *kcontrol,
                     struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.integer.value[0] = PRO_RATE_RESET ? 1 : 0;
    return 0;
}

static int snd_vt1724_pro_rate_reset_put(struct snd_kcontrol *kcontrol,
                     struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int change = 0, nval;

    nval = ucontrol->value.integer.value[0] ? 1 : 0;
    spin_lock_irq(&ice->reg_lock);
    change = PRO_RATE_RESET != nval;
    PRO_RATE_RESET = nval;
    spin_unlock_irq(&ice->reg_lock);
    return change;
}

static struct snd_kcontrol_new snd_vt1724_pro_rate_reset __devinitdata = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "Multi Track Rate Reset",
    .info = snd_vt1724_pro_rate_reset_info,
    .get = snd_vt1724_pro_rate_reset_get,
    .put = snd_vt1724_pro_rate_reset_put
};


/*
 * routing
 */
static int snd_vt1724_pro_route_info(struct snd_kcontrol *kcontrol,
                     struct snd_ctl_elem_info *uinfo)
{
    static char *texts[] = {
        "PCM Out", /* 0 */
        "H/W In 0", "H/W In 1", /* 1-2 */
        "IEC958 In L", "IEC958 In R", /* 3-4 */
    };

    uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
    uinfo->count = 1;
    uinfo->value.enumerated.items = 5;
    if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
        uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
    strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
    return 0;
}

static inline int analog_route_shift(int idx)
{
    return (idx % 2) * 12 + ((idx / 2) * 3) + 8;
}

static inline int digital_route_shift(int idx)
{
    return idx * 3;
}

int snd_ice1724_get_route_val(struct snd_ice1712 *ice, int shift)
{
    unsigned long val;
    unsigned char eitem;
    static const unsigned char xlate[8] = {
        0, 255, 1, 2, 255, 255, 3, 4,
    };

    val = inl(ICEMT1724(ice, ROUTE_PLAYBACK));
    val >>= shift;
    val &= 7; /* we now have 3 bits per output */
    eitem = xlate[val];
    if (eitem == 255) {
        snd_BUG();
        return 0;
    }
    return eitem;
}

int snd_ice1724_put_route_val(struct snd_ice1712 *ice, unsigned int val,
                                int shift)
{
    unsigned int old_val, nval;
    int change;
    static const unsigned char xroute[8] = {
        0, /* PCM */
        2, /* PSDIN0 Left */
        3, /* PSDIN0 Right */
        6, /* SPDIN Left */
        7, /* SPDIN Right */
    };

    nval = xroute[val % 5];
    val = old_val = inl(ICEMT1724(ice, ROUTE_PLAYBACK));
    val &= ~(0x07 << shift);
    val |= nval << shift;
    change = val != old_val;
    if (change)
        outl(val, ICEMT1724(ice, ROUTE_PLAYBACK));
    return change;
}

static int snd_vt1724_pro_route_analog_get(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
    ucontrol->value.enumerated.item[0] =
        snd_ice1724_get_route_val(ice, analog_route_shift(idx));
    return 0;
}

static int snd_vt1724_pro_route_analog_put(struct snd_kcontrol *kcontrol,
                       struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
    return snd_ice1724_put_route_val(ice,
                     ucontrol->value.enumerated.item[0],
                     analog_route_shift(idx));
}

static int snd_vt1724_pro_route_spdif_get(struct snd_kcontrol *kcontrol,
                      struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
    ucontrol->value.enumerated.item[0] =
        snd_ice1724_get_route_val(ice, digital_route_shift(idx));
    return 0;
}

static int snd_vt1724_pro_route_spdif_put(struct snd_kcontrol *kcontrol,
                      struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
    return snd_ice1724_put_route_val(ice,
                     ucontrol->value.enumerated.item[0],
                     digital_route_shift(idx));
}

static struct snd_kcontrol_new snd_vt1724_mixer_pro_analog_route __devinitdata =
{
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "H/W Playback Route",
    .info = snd_vt1724_pro_route_info,
    .get = snd_vt1724_pro_route_analog_get,
    .put = snd_vt1724_pro_route_analog_put,
};

static struct snd_kcontrol_new snd_vt1724_mixer_pro_spdif_route __devinitdata = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, NONE) "Route",
    .info = snd_vt1724_pro_route_info,
    .get = snd_vt1724_pro_route_spdif_get,
    .put = snd_vt1724_pro_route_spdif_put,
    .count = 2,
};


static int snd_vt1724_pro_peak_info(struct snd_kcontrol *kcontrol,
                    struct snd_ctl_elem_info *uinfo)
{
    uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
    uinfo->count = 22; /* FIXME: for compatibility with ice1712... */
    uinfo->value.integer.min = 0;
    uinfo->value.integer.max = 255;
    return 0;
}

static int snd_vt1724_pro_peak_get(struct snd_kcontrol *kcontrol,
                   struct snd_ctl_elem_value *ucontrol)
{
    struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
    int idx;

    spin_lock_irq(&ice->reg_lock);
    for (idx = 0; idx < 22; idx++) {
        outb(idx, ICEMT1724(ice, MONITOR_PEAKINDEX));
        ucontrol->value.integer.value[idx] =
            inb(ICEMT1724(ice, MONITOR_PEAKDATA));
    }
    spin_unlock_irq(&ice->reg_lock);
    return 0;
}

static struct snd_kcontrol_new snd_vt1724_mixer_pro_peak __devinitdata = {
    .iface = SNDRV_CTL_ELEM_IFACE_PCM,
    .name = "Multi Track Peak",
    .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
    .info = snd_vt1724_pro_peak_info,
    .get = snd_vt1724_pro_peak_get
};

/*
 *
 */

static struct snd_ice1712_card_info no_matched __devinitdata;


/*
  ooAoo cards with no controls
*/
static unsigned char ooaoo_sq210_eeprom[] __devinitdata = {
    [ICE_EEP2_SYSCONF]     = 0x4c,  /* 49MHz crystal, no mpu401, no ADC,
                       1xDACs */
    [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
    [ICE_EEP2_I2S]         = 0x78,  /* no volume, 96k, 24bit, 192k */
    [ICE_EEP2_SPDIF]       = 0xc1,  /* out-en, out-int, out-ext */
    [ICE_EEP2_GPIO_DIR]    = 0x00,  /* no GPIOs are used */
    [ICE_EEP2_GPIO_DIR1]   = 0x00,
    [ICE_EEP2_GPIO_DIR2]   = 0x00,
    [ICE_EEP2_GPIO_MASK]   = 0xff,
    [ICE_EEP2_GPIO_MASK1]  = 0xff,
    [ICE_EEP2_GPIO_MASK2]  = 0xff,

    [ICE_EEP2_GPIO_STATE]  = 0x00, /* inputs */
    [ICE_EEP2_GPIO_STATE1] = 0x00, /* all 1, but GPIO_CPLD_RW
                      and GPIO15 always zero */
    [ICE_EEP2_GPIO_STATE2] = 0x00, /* inputs */
};


struct snd_ice1712_card_info snd_vt1724_ooaoo_cards[] __devinitdata = {
    {
        .name = "ooAoo SQ210a",
        .model = "sq210a",
        .eeprom_size = sizeof(ooaoo_sq210_eeprom),
        .eeprom_data = ooaoo_sq210_eeprom,
    },
    { } /* terminator */
};

static struct snd_ice1712_card_info *card_tables[] __devinitdata = {
    snd_vt1724_revo_cards,
    snd_vt1724_amp_cards,
    snd_vt1724_aureon_cards,
    snd_vt1720_mobo_cards,
    snd_vt1720_pontis_cards,
    snd_vt1724_prodigy_hifi_cards,
    snd_vt1724_prodigy192_cards,
    snd_vt1724_juli_cards,
    snd_vt1724_maya44_cards,
    snd_vt1724_phase_cards,
    snd_vt1724_wtm_cards,
    snd_vt1724_se_cards,
    snd_vt1724_qtet_cards,
    snd_vt1724_ooaoo_cards,
    NULL,
};


/*
 */

static void wait_i2c_busy(struct snd_ice1712 *ice)
{
    int t = 0x10000;
    while ((inb(ICEREG1724(ice, I2C_CTRL)) & VT1724_I2C_BUSY) && t--)
        ;
    if (t == -1)
        printk(KERN_ERR "ice1724: i2c busy timeout\n");
}

unsigned char snd_vt1724_read_i2c(struct snd_ice1712 *ice,
                  unsigned char dev, unsigned char addr)
{
    unsigned char val;

    mutex_lock(&ice->i2c_mutex);
    wait_i2c_busy(ice);
    outb(addr, ICEREG1724(ice, I2C_BYTE_ADDR));
    outb(dev & ~VT1724_I2C_WRITE, ICEREG1724(ice, I2C_DEV_ADDR));
    wait_i2c_busy(ice);
    val = inb(ICEREG1724(ice, I2C_DATA));
    mutex_unlock(&ice->i2c_mutex);
    /*
    printk(KERN_DEBUG "i2c_read: [0x%x,0x%x] = 0x%x\n", dev, addr, val);
    */
    return val;
}

void snd_vt1724_write_i2c(struct snd_ice1712 *ice,
              unsigned char dev, unsigned char addr, unsigned char data)
{
    mutex_lock(&ice->i2c_mutex);
    wait_i2c_busy(ice);
    /*
    printk(KERN_DEBUG "i2c_write: [0x%x,0x%x] = 0x%x\n", dev, addr, data);
    */
    outb(addr, ICEREG1724(ice, I2C_BYTE_ADDR));
    outb(data, ICEREG1724(ice, I2C_DATA));
    outb(dev | VT1724_I2C_WRITE, ICEREG1724(ice, I2C_DEV_ADDR));
    wait_i2c_busy(ice);
    mutex_unlock(&ice->i2c_mutex);
}

static int __devinit snd_vt1724_read_eeprom(struct snd_ice1712 *ice,
                        const char *modelname)
{
    const int dev = 0xa0;       /* EEPROM device address */
    unsigned int i, size;
    struct snd_ice1712_card_info * const *tbl, *c;

    if (!modelname || !*modelname) {
        ice->eeprom.subvendor = 0;
        if ((inb(ICEREG1724(ice, I2C_CTRL)) & VT1724_I2C_EEPROM) != 0)
            ice->eeprom.subvendor =
                (snd_vt1724_read_i2c(ice, dev, 0x00) << 0) |
                (snd_vt1724_read_i2c(ice, dev, 0x01) << 8) |
                (snd_vt1724_read_i2c(ice, dev, 0x02) << 16) |
                (snd_vt1724_read_i2c(ice, dev, 0x03) << 24);
        if (ice->eeprom.subvendor == 0 ||
            ice->eeprom.subvendor == (unsigned int)-1) {
            /* invalid subvendor from EEPROM, try the PCI
             * subststem ID instead
             */
            u16 vendor, device;
            pci_read_config_word(ice->pci, PCI_SUBSYSTEM_VENDOR_ID,
                         &vendor);
            pci_read_config_word(ice->pci, PCI_SUBSYSTEM_ID, &device);
            ice->eeprom.subvendor =
                ((unsigned int)swab16(vendor) << 16) | swab16(device);
            if (ice->eeprom.subvendor == 0 ||
                ice->eeprom.subvendor == (unsigned int)-1) {
                printk(KERN_ERR "ice1724: No valid ID is found\n");
                return -ENXIO;
            }
        }
    }
    for (tbl = card_tables; *tbl; tbl++) {
        for (c = *tbl; c->name; c++) {
            if (modelname && c->model &&
                !strcmp(modelname, c->model)) {
                printk(KERN_INFO "ice1724: Using board model %s\n",
                       c->name);
                ice->eeprom.subvendor = c->subvendor;
            } else if (c->subvendor != ice->eeprom.subvendor)
                continue;
            if (!c->eeprom_size || !c->eeprom_data)
                goto found;
            /* if the EEPROM is given by the driver, use it */
            snd_printdd("using the defined eeprom..\n");
            ice->eeprom.version = 2;
            ice->eeprom.size = c->eeprom_size + 6;
            memcpy(ice->eeprom.data, c->eeprom_data, c->eeprom_size);
            goto read_skipped;
        }
    }
    printk(KERN_WARNING "ice1724: No matching model found for ID 0x%x\n",
           ice->eeprom.subvendor);

 found:
    ice->eeprom.size = snd_vt1724_read_i2c(ice, dev, 0x04);
    if (ice->eeprom.size < 6)
        ice->eeprom.size = 32;
    else if (ice->eeprom.size > 32) {
        printk(KERN_ERR "ice1724: Invalid EEPROM (size = %i)\n",
               ice->eeprom.size);
        return -EIO;
    }
    ice->eeprom.version = snd_vt1724_read_i2c(ice, dev, 0x05);
    if (ice->eeprom.version != 2)
        printk(KERN_WARNING "ice1724: Invalid EEPROM version %i\n",
               ice->eeprom.version);
    size = ice->eeprom.size - 6;
    for (i = 0; i < size; i++)
        ice->eeprom.data[i] = snd_vt1724_read_i2c(ice, dev, i + 6);

 read_skipped:
    ice->eeprom.gpiomask = eeprom_triple(ice, ICE_EEP2_GPIO_MASK);
    ice->eeprom.gpiostate = eeprom_triple(ice, ICE_EEP2_GPIO_STATE);
    ice->eeprom.gpiodir = eeprom_triple(ice, ICE_EEP2_GPIO_DIR);

    return 0;
}



static void snd_vt1724_chip_reset(struct snd_ice1712 *ice)
{
    outb(VT1724_RESET , ICEREG1724(ice, CONTROL));
    inb(ICEREG1724(ice, CONTROL)); /* pci posting flush */
    msleep(10);
    outb(0, ICEREG1724(ice, CONTROL));
    inb(ICEREG1724(ice, CONTROL)); /* pci posting flush */
    msleep(10);
}

static int snd_vt1724_chip_init(struct snd_ice1712 *ice)
{
    outb(ice->eeprom.data[ICE_EEP2_SYSCONF], ICEREG1724(ice, SYS_CFG));
    outb(ice->eeprom.data[ICE_EEP2_ACLINK], ICEREG1724(ice, AC97_CFG));
    outb(ice->eeprom.data[ICE_EEP2_I2S], ICEREG1724(ice, I2S_FEATURES));
    outb(ice->eeprom.data[ICE_EEP2_SPDIF], ICEREG1724(ice, SPDIF_CFG));

    ice->gpio.write_mask = ice->eeprom.gpiomask;
    ice->gpio.direction = ice->eeprom.gpiodir;
    snd_vt1724_set_gpio_mask(ice, ice->eeprom.gpiomask);
    snd_vt1724_set_gpio_dir(ice, ice->eeprom.gpiodir);
    snd_vt1724_set_gpio_data(ice, ice->eeprom.gpiostate);

    outb(0, ICEREG1724(ice, POWERDOWN));

    /* MPU_RX and TX irq masks are cleared later dynamically */
    outb(VT1724_IRQ_MPU_RX | VT1724_IRQ_MPU_TX , ICEREG1724(ice, IRQMASK));

    /* don't handle FIFO overrun/underruns (just yet),
     * since they cause machine lockups
     */
    outb(VT1724_MULTI_FIFO_ERR, ICEMT1724(ice, DMA_INT_MASK));

    return 0;
}

static int __devinit snd_vt1724_spdif_build_controls(struct snd_ice1712 *ice)
{
    int err;
    struct snd_kcontrol *kctl;

    if (snd_BUG_ON(!ice->pcm))
        return -EIO;

    if (!ice->own_routing) {
        err = snd_ctl_add(ice->card,
            snd_ctl_new1(&snd_vt1724_mixer_pro_spdif_route, ice));
        if (err < 0)
            return err;
    }

    err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_vt1724_spdif_switch, ice));
    if (err < 0)
        return err;

    err = snd_ctl_add(ice->card, kctl = snd_ctl_new1(&snd_vt1724_spdif_default, ice));
    if (err < 0)
        return err;
    kctl->id.device = ice->pcm->device;
    err = snd_ctl_add(ice->card, kctl = snd_ctl_new1(&snd_vt1724_spdif_maskc, ice));
    if (err < 0)
        return err;
    kctl->id.device = ice->pcm->device;
    err = snd_ctl_add(ice->card, kctl = snd_ctl_new1(&snd_vt1724_spdif_maskp, ice));
    if (err < 0)
        return err;
    kctl->id.device = ice->pcm->device;
#if 0 /* use default only */
    err = snd_ctl_add(ice->card, kctl = snd_ctl_new1(&snd_vt1724_spdif_stream, ice));
    if (err < 0)
        return err;
    kctl->id.device = ice->pcm->device;
    ice->spdif.stream_ctl = kctl;
#endif
    return 0;
}


static int __devinit snd_vt1724_build_controls(struct snd_ice1712 *ice)
{
    int err;

    err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_vt1724_eeprom, ice));
    if (err < 0)
        return err;
    err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_vt1724_pro_internal_clock, ice));
    if (err < 0)
        return err;

    err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_vt1724_pro_rate_locking, ice));
    if (err < 0)
        return err;
    err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_vt1724_pro_rate_reset, ice));
    if (err < 0)
        return err;

    if (!ice->own_routing && ice->num_total_dacs > 0) {
        struct snd_kcontrol_new tmp = snd_vt1724_mixer_pro_analog_route;
        tmp.count = ice->num_total_dacs;
        if (ice->vt1720 && tmp.count > 2)
            tmp.count = 2;
        err = snd_ctl_add(ice->card, snd_ctl_new1(&tmp, ice));
        if (err < 0)
            return err;
    }

    err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_vt1724_mixer_pro_peak, ice));
    if (err < 0)
        return err;

    return 0;
}

static int snd_vt1724_free(struct snd_ice1712 *ice)
{
    if (!ice->port)
        goto __hw_end;
    /* mask all interrupts */
    outb(0xff, ICEMT1724(ice, DMA_INT_MASK));
    outb(0xff, ICEREG1724(ice, IRQMASK));
    /* --- */
__hw_end:
    if (ice->irq >= 0)
        free_irq(ice->irq, ice);
    pci_release_regions(ice->pci);
    snd_ice1712_akm4xxx_free(ice);
    pci_disable_device(ice->pci);
    kfree(ice->spec);
    kfree(ice);
    return 0;
}

static int snd_vt1724_dev_free(struct snd_device *device)
{
    struct snd_ice1712 *ice = device->device_data;
    return snd_vt1724_free(ice);
}

static int __devinit snd_vt1724_create(struct snd_card *card,
                       struct pci_dev *pci,
                       const char *modelname,
                       struct snd_ice1712 **r_ice1712)
{
    struct snd_ice1712 *ice;
    int err;
    static struct snd_device_ops ops = {
        .dev_free = snd_vt1724_dev_free,
    };

    *r_ice1712 = NULL;

    /* enable PCI device */
    err = pci_enable_device(pci);
    if (err < 0)
        return err;

    ice = kzalloc(sizeof(*ice), GFP_KERNEL);
    if (ice == NULL) {
        pci_disable_device(pci);
        return -ENOMEM;
    }
    ice->vt1724 = 1;
    spin_lock_init(&ice->reg_lock);
    mutex_init(&ice->gpio_mutex);
    mutex_init(&ice->open_mutex);
    mutex_init(&ice->i2c_mutex);
    ice->gpio.set_mask = snd_vt1724_set_gpio_mask;
    ice->gpio.get_mask = snd_vt1724_get_gpio_mask;
    ice->gpio.set_dir = snd_vt1724_set_gpio_dir;
    ice->gpio.get_dir = snd_vt1724_get_gpio_dir;
    ice->gpio.set_data = snd_vt1724_set_gpio_data;
    ice->gpio.get_data = snd_vt1724_get_gpio_data;
    ice->card = card;
    ice->pci = pci;
    ice->irq = -1;
    pci_set_master(pci);
    snd_vt1724_proc_init(ice);
    synchronize_irq(pci->irq);

    card->private_data = ice;

    err = pci_request_regions(pci, "ICE1724");
    if (err < 0) {
        kfree(ice);
        pci_disable_device(pci);
        return err;
    }
    ice->port = pci_resource_start(pci, 0);
    ice->profi_port = pci_resource_start(pci, 1);

    if (request_irq(pci->irq, snd_vt1724_interrupt,
            IRQF_SHARED, KBUILD_MODNAME, ice)) {
        snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
        snd_vt1724_free(ice);
        return -EIO;
    }

    ice->irq = pci->irq;

    snd_vt1724_chip_reset(ice);
    if (snd_vt1724_read_eeprom(ice, modelname) < 0) {
        snd_vt1724_free(ice);
        return -EIO;
    }
    if (snd_vt1724_chip_init(ice) < 0) {
        snd_vt1724_free(ice);
        return -EIO;
    }

    err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ice, &ops);
    if (err < 0) {
        snd_vt1724_free(ice);
        return err;
    }

    snd_card_set_dev(card, &pci->dev);

    *r_ice1712 = ice;
    return 0;
}


/*
 *
 * Registration
 *
 */

static int __devinit snd_vt1724_probe(struct pci_dev *pci,
                      const struct pci_device_id *pci_id)
{
    static int dev;
    struct snd_card *card;
    struct snd_ice1712 *ice;
    int pcm_dev = 0, err;
    struct snd_ice1712_card_info * const *tbl, *c;

    if (dev >= SNDRV_CARDS)
        return -ENODEV;
    if (!enable[dev]) {
        dev++;
        return -ENOENT;
    }

    err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
    if (err < 0)
        return err;

    strcpy(card->driver, "ICE1724");
    strcpy(card->shortname, "ICEnsemble ICE1724");

    err = snd_vt1724_create(card, pci, model[dev], &ice);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }

    /* field init before calling chip_init */
    ice->ext_clock_count = 0;

    for (tbl = card_tables; *tbl; tbl++) {
        for (c = *tbl; c->name; c++) {
            if ((model[dev] && c->model &&
                 !strcmp(model[dev], c->model)) ||
                (c->subvendor == ice->eeprom.subvendor)) {
                strcpy(card->shortname, c->name);
                if (c->driver) /* specific driver? */
                    strcpy(card->driver, c->driver);
                if (c->chip_init) {
                    err = c->chip_init(ice);
                    if (err < 0) {
                        snd_card_free(card);
                        return err;
                    }
                }
                goto __found;
            }
        }
    }
    c = &no_matched;
__found:
    /*
    * VT1724 has separate DMAs for the analog and the SPDIF streams while
    * ICE1712 has only one for both (mixed up).
    *
    * Confusingly the analog PCM is named "professional" here because it
    * was called so in ice1712 driver, and vt1724 driver is derived from
    * ice1712 driver.
    */
    ice->pro_rate_default = PRO_RATE_DEFAULT;
    if (!ice->is_spdif_master)
        ice->is_spdif_master = stdclock_is_spdif_master;
    if (!ice->get_rate)
        ice->get_rate = stdclock_get_rate;
    if (!ice->set_rate)
        ice->set_rate = stdclock_set_rate;
    if (!ice->set_mclk)
        ice->set_mclk = stdclock_set_mclk;
    if (!ice->set_spdif_clock)
        ice->set_spdif_clock = stdclock_set_spdif_clock;
    if (!ice->get_spdif_master_type)
        ice->get_spdif_master_type = stdclock_get_spdif_master_type;
    if (!ice->ext_clock_names)
        ice->ext_clock_names = ext_clock_names;
    if (!ice->ext_clock_count)
        ice->ext_clock_count = ARRAY_SIZE(ext_clock_names);

    if (!ice->hw_rates)
        set_std_hw_rates(ice);

    err = snd_vt1724_pcm_profi(ice, pcm_dev++);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }

    err = snd_vt1724_pcm_spdif(ice, pcm_dev++);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }

    err = snd_vt1724_pcm_indep(ice, pcm_dev++);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }

    err = snd_vt1724_ac97_mixer(ice);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }

    err = snd_vt1724_build_controls(ice);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }

    if (ice->pcm && ice->has_spdif) { /* has SPDIF I/O */
        err = snd_vt1724_spdif_build_controls(ice);
        if (err < 0) {
            snd_card_free(card);
            return err;
        }
    }

    if (c->build_controls) {
        err = c->build_controls(ice);
        if (err < 0) {
            snd_card_free(card);
            return err;
        }
    }

    if (!c->no_mpu401) {
        if (ice->eeprom.data[ICE_EEP2_SYSCONF] & VT1724_CFG_MPU401) {
            struct snd_rawmidi *rmidi;

            err = snd_rawmidi_new(card, "MIDI", 0, 1, 1, &rmidi);
            if (err < 0) {
                snd_card_free(card);
                return err;
            }
            ice->rmidi[0] = rmidi;
            rmidi->private_data = ice;
            strcpy(rmidi->name, "ICE1724 MIDI");
            rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
                        SNDRV_RAWMIDI_INFO_INPUT |
                        SNDRV_RAWMIDI_INFO_DUPLEX;
            snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
                        &vt1724_midi_output_ops);
            snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
                        &vt1724_midi_input_ops);

            /* set watermarks */
            outb(VT1724_MPU_RX_FIFO | 0x1,
                 ICEREG1724(ice, MPU_FIFO_WM));
            outb(0x1, ICEREG1724(ice, MPU_FIFO_WM));
            /* set UART mode */
            outb(VT1724_MPU_UART, ICEREG1724(ice, MPU_CTRL));
        }
    }

    sprintf(card->longname, "%s at 0x%lx, irq %i",
        card->shortname, ice->port, ice->irq);

    err = snd_card_register(card);
    if (err < 0) {
        snd_card_free(card);
        return err;
    }
    pci_set_drvdata(pci, card);
    dev++;
    return 0;
}

static void __devexit snd_vt1724_remove(struct pci_dev *pci)
{
    snd_card_free(pci_get_drvdata(pci));
    pci_set_drvdata(pci, NULL);
}

#ifdef CONFIG_PM_SLEEP
static int snd_vt1724_suspend(struct device *dev)
{
    struct pci_dev *pci = to_pci_dev(dev);
    struct snd_card *card = dev_get_drvdata(dev);
    struct snd_ice1712 *ice = card->private_data;

    if (!ice->pm_suspend_enabled)
        return 0;

    snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);

    snd_pcm_suspend_all(ice->pcm);
    snd_pcm_suspend_all(ice->pcm_pro);
    snd_pcm_suspend_all(ice->pcm_ds);
    snd_ac97_suspend(ice->ac97);

    spin_lock_irq(&ice->reg_lock);
    ice->pm_saved_is_spdif_master = ice->is_spdif_master(ice);
    ice->pm_saved_spdif_ctrl = inw(ICEMT1724(ice, SPDIF_CTRL));
    ice->pm_saved_spdif_cfg = inb(ICEREG1724(ice, SPDIF_CFG));
    ice->pm_saved_route = inl(ICEMT1724(ice, ROUTE_PLAYBACK));
    spin_unlock_irq(&ice->reg_lock);

    if (ice->pm_suspend)
        ice->pm_suspend(ice);

    pci_disable_device(pci);
    pci_save_state(pci);
    pci_set_power_state(pci, PCI_D3hot);
    return 0;
}

static int snd_vt1724_resume(struct device *dev)
{
    struct pci_dev *pci = to_pci_dev(dev);
    struct snd_card *card = dev_get_drvdata(dev);
    struct snd_ice1712 *ice = card->private_data;

    if (!ice->pm_suspend_enabled)
        return 0;

    pci_set_power_state(pci, PCI_D0);
    pci_restore_state(pci);

    if (pci_enable_device(pci) < 0) {
        snd_card_disconnect(card);
        return -EIO;
    }

    pci_set_master(pci);

    snd_vt1724_chip_reset(ice);

    if (snd_vt1724_chip_init(ice) < 0) {
        snd_card_disconnect(card);
        return -EIO;
    }

    if (ice->pm_resume)
        ice->pm_resume(ice);

    if (ice->pm_saved_is_spdif_master) {
        /* switching to external clock via SPDIF */
        ice->set_spdif_clock(ice, 0);
    } else {
        /* internal on-card clock */
        int rate;
        if (ice->cur_rate)
            rate = ice->cur_rate;
        else
            rate = ice->pro_rate_default;
        snd_vt1724_set_pro_rate(ice, rate, 1);
    }

    update_spdif_bits(ice, ice->pm_saved_spdif_ctrl);

    outb(ice->pm_saved_spdif_cfg, ICEREG1724(ice, SPDIF_CFG));
    outl(ice->pm_saved_route, ICEMT1724(ice, ROUTE_PLAYBACK));

    if (ice->ac97)
        snd_ac97_resume(ice->ac97);

    snd_power_change_state(card, SNDRV_CTL_POWER_D0);
    return 0;
}

static SIMPLE_DEV_PM_OPS(snd_vt1724_pm, snd_vt1724_suspend, snd_vt1724_resume);
#define SND_VT1724_PM_OPS   &snd_vt1724_pm
#else
#define SND_VT1724_PM_OPS   NULL
#endif /* CONFIG_PM_SLEEP */

static struct pci_driver vt1724_driver = {
    .name = KBUILD_MODNAME,
    .id_table = snd_vt1724_ids,
    .probe = snd_vt1724_probe,
    .remove = __devexit_p(snd_vt1724_remove),
    .driver = {
        .pm = SND_VT1724_PM_OPS,
    },
};

module_pci_driver(vt1724_driver);