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ice1724.c

/*
 *   ALSA driver for VT1724 ICEnsemble ICE1724 / VIA VT1724 (Envy24HT)
 *                   VIA VT1720 (Envy24PT)
 *
 *    Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
 *                    2002 James Stafford <jstafford@ampltd.com>
 *                    2003 Takashi Iwai <tiwai@suse.de>
 *
 *   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/moduleparam.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 "phase.h"
#include "wtm.h"
#include "se.h"

MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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
             PHASE_DEVICE_DESC
             WTM_DEVICE_DESC
             SE_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 int 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 const struct pci_device_id snd_vt1724_ids[] = {
      { PCI_VENDOR_ID_ICE, PCI_DEVICE_ID_VT1724, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 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;

/*
 *  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;
}

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 */
}

/* 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 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:
            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;

      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 void 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;
      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;
      }
      if (!force && is_pro_rate_locked(ice)) {
            spin_unlock_irqrestore(&ice->reg_lock, flags);
            return;
      }

      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;
      }

      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);
}

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;

      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);
      snd_vt1724_set_pro_rate(ice, params_rate(hw_params), 0);
      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_playback_pro_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_capture_pro_reg = {
      .addr = VT1724_MT_CAPTURE_ADDR,
      .size = VT1724_MT_CAPTURE_SIZE,
      .count = VT1724_MT_CAPTURE_COUNT,
      .start = VT1724_RDMA0_START,
};

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);
}

/* 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);
      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);
      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 err;

      err = snd_pcm_new(ice->card, "ICE1724", device, 1, 1, &pcm);
      if (err < 0)
            return err;

      snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_vt1724_playback_pro_ops);
      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
 */

static const struct vt1724_pcm_reg vt1724_playback_spdif_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_capture_spdif_reg = {
      .addr = VT1724_MT_RDMA1_ADDR,
      .size = VT1724_MT_RDMA1_SIZE,
      .count = VT1724_MT_RDMA1_COUNT,
      .start = VT1724_RDMA1_START,
};

/* 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);
      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);
      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),
                                    64*1024, 64*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),
                                    64*1024, 64*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);

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = ice->hw_rates->count + 1;
      if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
            uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
      if (uinfo->value.enumerated.item == uinfo->value.enumerated.items - 1)
            strcpy(uinfo->value.enumerated.name, "IEC958 Input");
      else
            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;
      } 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;
}

/* setting clock to external - SPDIF */
static void stdclock_set_spdif_clock(struct snd_ice1712 *ice)
{
      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));
}

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 spdif = ice->hw_rates->count;

      if (item > spdif)
            return -EINVAL;

      spin_lock_irq(&ice->reg_lock);
      if (ice->is_spdif_master(ice))
            old_rate = 0;
      else
            old_rate = ice->get_rate(ice);
      if (item == spdif) {
            /* switching to external clock via SPDIF */
            ice->set_spdif_clock(ice);
            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 reset to the SPDIF master 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;
}

static int 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;
}

static int 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] =
            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 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] =
            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 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_MIXER,
      .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;

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_phase_cards,
      snd_vt1724_wtm_cards,
      snd_vt1724_se_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->subvendor; 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 __devinit snd_vt1724_chip_reset(struct snd_ice1712 *ice)
{
      outb(VT1724_RESET , ICEREG1724(ice, CONTROL));
      msleep(10);
      outb(0, ICEREG1724(ice, CONTROL));
      msleep(10);
}

static int __devinit 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));

      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;

      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->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.set_dir = snd_vt1724_set_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);

      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, "ICE1724", 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;
      }

      /* 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));

      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;
      }

      for (tbl = card_tables; *tbl; tbl++) {
            for (c = *tbl; c->subvendor; c++) {
                  if (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->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);
}

static struct pci_driver driver = {
      .name = "ICE1724",
      .id_table = snd_vt1724_ids,
      .probe = snd_vt1724_probe,
      .remove = __devexit_p(snd_vt1724_remove),
};

static int __init alsa_card_ice1724_init(void)
{
      return pci_register_driver(&driver);
}

static void __exit alsa_card_ice1724_exit(void)
{
      pci_unregister_driver(&driver);
}

module_init(alsa_card_ice1724_init)
module_exit(alsa_card_ice1724_exit)

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