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ac97_patch.c

/*
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
 *  Universal interface for Audio Codec '97
 *
 *  For more details look to AC '97 component specification revision 2.2
 *  by Intel Corporation (http://developer.intel.com) and to datasheets
 *  for specific codecs.
 *
 *
 *   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 <sound/driver.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/control.h>
#include <sound/ac97_codec.h>
#include "ac97_patch.h"
#include "ac97_id.h"
#include "ac97_local.h"

/*
 *  Chip specific initialization
 */

static int patch_build_controls(ac97_t * ac97, const snd_kcontrol_new_t *controls, int count)
{
      int idx, err;

      for (idx = 0; idx < count; idx++)
            if ((err = snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&controls[idx], ac97))) < 0)
                  return err;
      return 0;
}

/* set to the page, update bits and restore the page */
static int ac97_update_bits_page(ac97_t *ac97, unsigned short reg, unsigned short mask, unsigned short value, unsigned short page)
{
      unsigned short page_save;
      int ret;

      down(&ac97->page_mutex);
      page_save = snd_ac97_read(ac97, AC97_INT_PAGING) & AC97_PAGE_MASK;
      snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, page);
      ret = snd_ac97_update_bits(ac97, reg, mask, value);
      snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, page_save);
      up(&ac97->page_mutex); /* unlock paging */
      return ret;
}

/* The following snd_ac97_ymf753_... items added by David Shust (dshust@shustring.com) */

/* It is possible to indicate to the Yamaha YMF753 the type of speakers being used. */
static int snd_ac97_ymf753_info_speaker(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
      static char *texts[3] = {
            "Standard", "Small", "Smaller"
      };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 3;
      if (uinfo->value.enumerated.item > 2)
            uinfo->value.enumerated.item = 2;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_ymf753_get_speaker(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_YMF753_3D_MODE_SEL];
      val = (val >> 10) & 3;
      if (val > 0)    /* 0 = invalid */
            val--;
      ucontrol->value.enumerated.item[0] = val;
      return 0;
}

static int snd_ac97_ymf753_put_speaker(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      if (ucontrol->value.enumerated.item[0] > 2)
            return -EINVAL;
      val = (ucontrol->value.enumerated.item[0] + 1) << 10;
      return snd_ac97_update(ac97, AC97_YMF753_3D_MODE_SEL, val);
}

static const snd_kcontrol_new_t snd_ac97_ymf753_controls_speaker =
{
      .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name   = "3D Control - Speaker",
      .info   = snd_ac97_ymf753_info_speaker,
      .get    = snd_ac97_ymf753_get_speaker,
      .put    = snd_ac97_ymf753_put_speaker,
};

/* It is possible to indicate to the Yamaha YMF753 the source to direct to the S/PDIF output. */
static int snd_ac97_ymf753_spdif_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
      static char *texts[2] = { "AC-Link", "A/D Converter" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 2;
      if (uinfo->value.enumerated.item > 1)
            uinfo->value.enumerated.item = 1;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_ymf753_spdif_source_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_YMF753_DIT_CTRL2];
      ucontrol->value.enumerated.item[0] = (val >> 1) & 1;
      return 0;
}

static int snd_ac97_ymf753_spdif_source_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      if (ucontrol->value.enumerated.item[0] > 1)
            return -EINVAL;
      val = ucontrol->value.enumerated.item[0] << 1;
      return snd_ac97_update_bits(ac97, AC97_YMF753_DIT_CTRL2, 0x0002, val);
}

/* The AC'97 spec states that the S/PDIF signal is to be output at pin 48.
   The YMF753 will output the S/PDIF signal to pin 43, 47 (EAPD), or 48.
   By default, no output pin is selected, and the S/PDIF signal is not output.
   There is also a bit to mute S/PDIF output in a vendor-specific register. */
static int snd_ac97_ymf753_spdif_output_pin_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
      static char *texts[3] = { "Disabled", "Pin 43", "Pin 48" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 3;
      if (uinfo->value.enumerated.item > 2)
            uinfo->value.enumerated.item = 2;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_ymf753_spdif_output_pin_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_YMF753_DIT_CTRL2];
      ucontrol->value.enumerated.item[0] = (val & 0x0008) ? 2 : (val & 0x0020) ? 1 : 0;
      return 0;
}

static int snd_ac97_ymf753_spdif_output_pin_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      if (ucontrol->value.enumerated.item[0] > 2)
            return -EINVAL;
      val = (ucontrol->value.enumerated.item[0] == 2) ? 0x0008 :
            (ucontrol->value.enumerated.item[0] == 1) ? 0x0020 : 0;
      return snd_ac97_update_bits(ac97, AC97_YMF753_DIT_CTRL2, 0x0028, val);
      /* The following can be used to direct S/PDIF output to pin 47 (EAPD).
         snd_ac97_write_cache(ac97, 0x62, snd_ac97_read(ac97, 0x62) | 0x0008); */
}

static const snd_kcontrol_new_t snd_ac97_ymf753_controls_spdif[3] = {
      {
            .iface      = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source",
            .info = snd_ac97_ymf753_spdif_source_info,
            .get  = snd_ac97_ymf753_spdif_source_get,
            .put  = snd_ac97_ymf753_spdif_source_put,
      },
      {
            .iface      = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Output Pin",
            .info = snd_ac97_ymf753_spdif_output_pin_info,
            .get  = snd_ac97_ymf753_spdif_output_pin_get,
            .put  = snd_ac97_ymf753_spdif_output_pin_put,
      },
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",NONE,NONE) "Mute", AC97_YMF753_DIT_CTRL2, 2, 1, 1)
};

static int patch_yamaha_ymf753_3d(ac97_t * ac97)
{
      snd_kcontrol_t *kctl;
      int err;

      if ((err = snd_ctl_add(ac97->bus->card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97))) < 0)
            return err;
      strcpy(kctl->id.name, "3D Control - Wide");
      kctl->private_value = AC97_SINGLE_VALUE(AC97_3D_CONTROL, 9, 7, 0);
      snd_ac97_write_cache(ac97, AC97_3D_CONTROL, 0x0000);
      if ((err = snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&snd_ac97_ymf753_controls_speaker, ac97))) < 0)
            return err;
      snd_ac97_write_cache(ac97, AC97_YMF753_3D_MODE_SEL, 0x0c00);
      return 0;
}

static int patch_yamaha_ymf753_post_spdif(ac97_t * ac97)
{
      int err;

      if ((err = patch_build_controls(ac97, snd_ac97_ymf753_controls_spdif, ARRAY_SIZE(snd_ac97_ymf753_controls_spdif))) < 0)
            return err;
      return 0;
}

static struct snd_ac97_build_ops patch_yamaha_ymf753_ops = {
      .build_3d   = patch_yamaha_ymf753_3d,
      .build_post_spdif = patch_yamaha_ymf753_post_spdif
};

int patch_yamaha_ymf753(ac97_t * ac97)
{
      /* Patch for Yamaha YMF753, Copyright (c) by David Shust, dshust@shustring.com.
         This chip has nonstandard and extended behaviour with regard to its S/PDIF output.
         The AC'97 spec states that the S/PDIF signal is to be output at pin 48.
         The YMF753 will ouput the S/PDIF signal to pin 43, 47 (EAPD), or 48.
         By default, no output pin is selected, and the S/PDIF signal is not output.
         There is also a bit to mute S/PDIF output in a vendor-specific register.
      */
      ac97->build_ops = &patch_yamaha_ymf753_ops;
      ac97->caps |= AC97_BC_BASS_TREBLE;
      ac97->caps |= 0x04 << 10; /* Yamaha 3D enhancement */
      return 0;
}

/*
 * May 2, 2003 Liam Girdwood <liam.girdwood@wolfsonmicro.com>
 *  removed broken wolfson00 patch.
 *  added support for WM9705,WM9708,WM9709,WM9710,WM9711,WM9712 and WM9717.
 */

int patch_wolfson03(ac97_t * ac97)
{
      /* This is known to work for the ViewSonic ViewPad 1000
         Randolph Bentson <bentson@holmsjoen.com> */

      // WM9703/9707/9708/9717
      snd_ac97_write_cache(ac97, AC97_WM97XX_FMIXER_VOL, 0x0808);
      snd_ac97_write_cache(ac97, AC97_GENERAL_PURPOSE, 0x8000);
      return 0;
}
  
int patch_wolfson04(ac97_t * ac97)
{
      // WM9704M/9704Q
      // set front and rear mixer volume
      snd_ac97_write_cache(ac97, AC97_WM97XX_FMIXER_VOL, 0x0808);
      snd_ac97_write_cache(ac97, AC97_WM9704_RMIXER_VOL, 0x0808);
      
      // patch for DVD noise
      snd_ac97_write_cache(ac97, AC97_WM9704_TEST, 0x0200);
 
      // init vol
      snd_ac97_write_cache(ac97, AC97_WM9704_RPCM_VOL, 0x0808);
 
      // set rear surround volume
      snd_ac97_write_cache(ac97, AC97_SURROUND_MASTER, 0x0000);
      return 0;
}
  
int patch_wolfson05(ac97_t * ac97)
{
      // WM9705, WM9710
      // set front mixer volume
      snd_ac97_write_cache(ac97, AC97_WM97XX_FMIXER_VOL, 0x0808);
      return 0;
}

int patch_wolfson11(ac97_t * ac97)
{
      // WM9711, WM9712
      // set out3 volume
      snd_ac97_write_cache(ac97, AC97_WM9711_OUT3VOL, 0x0808);
      return 0;
}

/*
 * Tritech codec
 */
int patch_tritech_tr28028(ac97_t * ac97)
{
      snd_ac97_write_cache(ac97, 0x26, 0x0300);
      snd_ac97_write_cache(ac97, 0x26, 0x0000);
      snd_ac97_write_cache(ac97, AC97_SURROUND_MASTER, 0x0000);
      snd_ac97_write_cache(ac97, AC97_SPDIF, 0x0000);
      return 0;
}

/*
 * Sigmatel STAC97xx codecs
 */
static int patch_sigmatel_stac9700_3d(ac97_t * ac97)
{
      snd_kcontrol_t *kctl;
      int err;

      if ((err = snd_ctl_add(ac97->bus->card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97))) < 0)
            return err;
      strcpy(kctl->id.name, "3D Control Sigmatel - Depth");
      kctl->private_value = AC97_SINGLE_VALUE(AC97_3D_CONTROL, 2, 3, 0);
      snd_ac97_write_cache(ac97, AC97_3D_CONTROL, 0x0000);
      return 0;
}

static int patch_sigmatel_stac9708_3d(ac97_t * ac97)
{
      snd_kcontrol_t *kctl;
      int err;

      if ((err = snd_ctl_add(ac97->bus->card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97))) < 0)
            return err;
      strcpy(kctl->id.name, "3D Control Sigmatel - Depth");
      kctl->private_value = AC97_SINGLE_VALUE(AC97_3D_CONTROL, 0, 3, 0);
      if ((err = snd_ctl_add(ac97->bus->card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97))) < 0)
            return err;
      strcpy(kctl->id.name, "3D Control Sigmatel - Rear Depth");
      kctl->private_value = AC97_SINGLE_VALUE(AC97_3D_CONTROL, 2, 3, 0);
      snd_ac97_write_cache(ac97, AC97_3D_CONTROL, 0x0000);
      return 0;
}

static const snd_kcontrol_new_t snd_ac97_sigmatel_4speaker =
AC97_SINGLE("Sigmatel 4-Speaker Stereo Playback Switch", AC97_SIGMATEL_DAC2INVERT, 2, 1, 0);

static const snd_kcontrol_new_t snd_ac97_sigmatel_phaseinvert =
AC97_SINGLE("Sigmatel Surround Phase Inversion Playback Switch", AC97_SIGMATEL_DAC2INVERT, 3, 1, 0);

static const snd_kcontrol_new_t snd_ac97_sigmatel_controls[] = {
AC97_SINGLE("Sigmatel DAC 6dB Attenuate", AC97_SIGMATEL_ANALOG, 1, 1, 0),
AC97_SINGLE("Sigmatel ADC 6dB Attenuate", AC97_SIGMATEL_ANALOG, 0, 1, 0)
};

static int patch_sigmatel_stac97xx_specific(ac97_t * ac97)
{
      int err;

      snd_ac97_write_cache(ac97, AC97_SIGMATEL_ANALOG, snd_ac97_read(ac97, AC97_SIGMATEL_ANALOG) & ~0x0003);
      if (snd_ac97_try_bit(ac97, AC97_SIGMATEL_ANALOG, 1))
            if ((err = patch_build_controls(ac97, &snd_ac97_sigmatel_controls[0], 1)) < 0)
                  return err;
      if (snd_ac97_try_bit(ac97, AC97_SIGMATEL_ANALOG, 0))
            if ((err = patch_build_controls(ac97, &snd_ac97_sigmatel_controls[1], 1)) < 0)
                  return err;
      if (snd_ac97_try_bit(ac97, AC97_SIGMATEL_DAC2INVERT, 2))
            if ((err = patch_build_controls(ac97, &snd_ac97_sigmatel_4speaker, 1)) < 0)
                  return err;
      if (snd_ac97_try_bit(ac97, AC97_SIGMATEL_DAC2INVERT, 3))
            if ((err = patch_build_controls(ac97, &snd_ac97_sigmatel_phaseinvert, 1)) < 0)
                  return err;
      return 0;
}

static struct snd_ac97_build_ops patch_sigmatel_stac9700_ops = {
      .build_3d   = patch_sigmatel_stac9700_3d,
      .build_specific   = patch_sigmatel_stac97xx_specific
};

int patch_sigmatel_stac9700(ac97_t * ac97)
{
      ac97->build_ops = &patch_sigmatel_stac9700_ops;
      return 0;
}

static int patch_sigmatel_stac9708_specific(ac97_t *ac97)
{
      snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Sigmatel Surround Playback");
      return patch_sigmatel_stac97xx_specific(ac97);
}

static struct snd_ac97_build_ops patch_sigmatel_stac9708_ops = {
      .build_3d   = patch_sigmatel_stac9708_3d,
      .build_specific   = patch_sigmatel_stac9708_specific
};

int patch_sigmatel_stac9708(ac97_t * ac97)
{
      unsigned int codec72, codec6c;

      ac97->build_ops = &patch_sigmatel_stac9708_ops;
      ac97->caps |= 0x10;     /* HP (sigmatel surround) support */

      codec72 = snd_ac97_read(ac97, AC97_SIGMATEL_BIAS2) & 0x8000;
      codec6c = snd_ac97_read(ac97, AC97_SIGMATEL_ANALOG);

      if ((codec72==0) && (codec6c==0)) {
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC1, 0xabba);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC2, 0x1000);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS1, 0xabba);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS2, 0x0007);
      } else if ((codec72==0x8000) && (codec6c==0)) {
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC1, 0xabba);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC2, 0x1001);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_DAC2INVERT, 0x0008);
      } else if ((codec72==0x8000) && (codec6c==0x0080)) {
            /* nothing */
      }
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_MULTICHN, 0x0000);
      return 0;
}

int patch_sigmatel_stac9721(ac97_t * ac97)
{
      ac97->build_ops = &patch_sigmatel_stac9700_ops;
      if (snd_ac97_read(ac97, AC97_SIGMATEL_ANALOG) == 0) {
            // patch for SigmaTel
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC1, 0xabba);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC2, 0x4000);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS1, 0xabba);
            snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS2, 0x0002);
      }
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_MULTICHN, 0x0000);
      return 0;
}

int patch_sigmatel_stac9744(ac97_t * ac97)
{
      // patch for SigmaTel
      ac97->build_ops = &patch_sigmatel_stac9700_ops;
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC1, 0xabba);
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC2, 0x0000);     /* is this correct? --jk */
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS1, 0xabba);
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS2, 0x0002);
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_MULTICHN, 0x0000);
      return 0;
}

int patch_sigmatel_stac9756(ac97_t * ac97)
{
      // patch for SigmaTel
      ac97->build_ops = &patch_sigmatel_stac9700_ops;
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC1, 0xabba);
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_CIC2, 0x0000);     /* is this correct? --jk */
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS1, 0xabba);
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_BIAS2, 0x0002);
      snd_ac97_write_cache(ac97, AC97_SIGMATEL_MULTICHN, 0x0000);
      return 0;
}

static int snd_ac97_stac9758_output_jack_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      static char *texts[5] = { "Input/Disabled", "Front Output",
            "Rear Output", "Center/LFE Output", "Mixer Output" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 5;
      if (uinfo->value.enumerated.item > 4)
            uinfo->value.enumerated.item = 4;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_stac9758_output_jack_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t* ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      int shift = kcontrol->private_value;
      unsigned short val;

      val = ac97->regs[AC97_SIGMATEL_OUTSEL] >> shift;
      if (!(val & 4))
            ucontrol->value.enumerated.item[0] = 0;
      else
            ucontrol->value.enumerated.item[0] = 1 + (val & 3);
      return 0;
}

static int snd_ac97_stac9758_output_jack_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      int shift = kcontrol->private_value;
      unsigned short val;

      if (ucontrol->value.enumerated.item[0] > 4)
            return -EINVAL;
      if (ucontrol->value.enumerated.item[0] == 0)
            val = 0;
      else
            val = 4 | (ucontrol->value.enumerated.item[0] - 1);
      return ac97_update_bits_page(ac97, AC97_SIGMATEL_OUTSEL,
                             7 << shift, val << shift, 0);
}

static int snd_ac97_stac9758_input_jack_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      static char *texts[7] = { "Mic2 Jack", "Mic1 Jack", "Line In Jack",
            "Front Jack", "Rear Jack", "Center/LFE Jack", "Mute" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 7;
      if (uinfo->value.enumerated.item > 6)
            uinfo->value.enumerated.item = 6;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_stac9758_input_jack_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t* ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      int shift = kcontrol->private_value;
      unsigned short val;

      val = ac97->regs[AC97_SIGMATEL_INSEL];
      ucontrol->value.enumerated.item[0] = (val >> shift) & 7;
      return 0;
}

static int snd_ac97_stac9758_input_jack_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      int shift = kcontrol->private_value;

      return ac97_update_bits_page(ac97, AC97_SIGMATEL_INSEL, 7 << shift,
                             ucontrol->value.enumerated.item[0] << shift, 0);
}

static int snd_ac97_stac9758_phonesel_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      static char *texts[3] = { "None", "Front Jack", "Rear Jack" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 3;
      if (uinfo->value.enumerated.item > 2)
            uinfo->value.enumerated.item = 2;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_stac9758_phonesel_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t* ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      ucontrol->value.enumerated.item[0] = ac97->regs[AC97_SIGMATEL_IOMISC] & 3;
      return 0;
}

static int snd_ac97_stac9758_phonesel_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      return ac97_update_bits_page(ac97, AC97_SIGMATEL_IOMISC, 3,
                             ucontrol->value.enumerated.item[0], 0);
}

#define STAC9758_OUTPUT_JACK(xname, shift) \
{     .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
      .info = snd_ac97_stac9758_output_jack_info, \
      .get = snd_ac97_stac9758_output_jack_get, \
      .put = snd_ac97_stac9758_output_jack_put, \
      .private_value = shift }
#define STAC9758_INPUT_JACK(xname, shift) \
{     .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
      .info = snd_ac97_stac9758_input_jack_info, \
      .get = snd_ac97_stac9758_input_jack_get, \
      .put = snd_ac97_stac9758_input_jack_put, \
      .private_value = shift }
static const snd_kcontrol_new_t snd_ac97_sigmatel_stac9758_controls[] = {
      STAC9758_OUTPUT_JACK("Mic1 Jack", 1),
      STAC9758_OUTPUT_JACK("LineIn Jack", 4),
      STAC9758_OUTPUT_JACK("Front Jack", 7),
      STAC9758_OUTPUT_JACK("Rear Jack", 10),
      STAC9758_OUTPUT_JACK("Center/LFE Jack", 13),
      STAC9758_INPUT_JACK("Mic Input Source", 0),
      STAC9758_INPUT_JACK("Line Input Source", 8),
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Headphone Amp",
            .info = snd_ac97_stac9758_phonesel_info,
            .get = snd_ac97_stac9758_phonesel_get,
            .put = snd_ac97_stac9758_phonesel_put
      },
      AC97_SINGLE("Exchange Center/LFE", AC97_SIGMATEL_IOMISC, 4, 1, 0),
      AC97_SINGLE("Headphone +3dB Boost", AC97_SIGMATEL_IOMISC, 8, 1, 0)
};

static int patch_sigmatel_stac9758_specific(ac97_t *ac97)
{
      int err;

      err = patch_sigmatel_stac97xx_specific(ac97);
      if (err < 0)
            return err;
      err = patch_build_controls(ac97, snd_ac97_sigmatel_stac9758_controls,
                           ARRAY_SIZE(snd_ac97_sigmatel_stac9758_controls));
      if (err < 0)
            return err;
      /* DAC-A direct */
      snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Front Playback");
      /* DAC-A to Mix = PCM */
      /* DAC-B direct = Surround */
      /* DAC-B to Mix */
      snd_ac97_rename_vol_ctl(ac97, "Video Playback", "Surround Mix Playback");
      /* DAC-C direct = Center/LFE */

      return 0;
}

static struct snd_ac97_build_ops patch_sigmatel_stac9758_ops = {
      .build_3d   = patch_sigmatel_stac9700_3d,
      .build_specific   = patch_sigmatel_stac9758_specific
};

int patch_sigmatel_stac9758(ac97_t * ac97)
{
      static unsigned short regs[4] = {
            AC97_SIGMATEL_OUTSEL,
            AC97_SIGMATEL_IOMISC,
            AC97_SIGMATEL_INSEL,
            AC97_SIGMATEL_VARIOUS
      };
      static unsigned short def_regs[4] = {
            /* OUTSEL */ 0xd794, /* CL:CL, SR:SR, LO:MX, LI:DS, MI:DS */
            /* IOMISC */ 0x2001,
            /* INSEL */ 0x0201, /* LI:LI, MI:M1 */
            /* VARIOUS */ 0x0040
      };
      static unsigned short m675_regs[4] = {
            /* OUTSEL */ 0xfc70, /* CL:MX, SR:MX, LO:DS, LI:MX, MI:DS */
            /* IOMISC */ 0x2102, /* HP amp on */
            /* INSEL */ 0x0203, /* LI:LI, MI:FR */
            /* VARIOUS */ 0x0041 /* stereo mic */
      };
      unsigned short *pregs = def_regs;
      int i;

      /* Gateway M675 notebook */
      if (ac97->pci && 
          ac97->subsystem_vendor == 0x107b &&
          ac97->subsystem_device == 0x0601)
            pregs = m675_regs;

      // patch for SigmaTel
      ac97->build_ops = &patch_sigmatel_stac9758_ops;
      /* FIXME: assume only page 0 for writing cache */
      snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, AC97_PAGE_VENDOR);
      for (i = 0; i < 4; i++)
            snd_ac97_write_cache(ac97, regs[i], pregs[i]);

      ac97->flags |= AC97_STEREO_MUTES;
      return 0;
}

/*
 * Cirrus Logic CS42xx codecs
 */
static const snd_kcontrol_new_t snd_ac97_cirrus_controls_spdif[2] = {
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH), AC97_CSR_SPDIF, 15, 1, 0),
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "AC97-SPSA", AC97_CSR_ACMODE, 0, 3, 0)
};

static int patch_cirrus_build_spdif(ac97_t * ac97)
{
      int err;

      /* con mask, pro mask, default */
      if ((err = patch_build_controls(ac97, &snd_ac97_controls_spdif[0], 3)) < 0)
            return err;
      /* switch, spsa */
      if ((err = patch_build_controls(ac97, &snd_ac97_cirrus_controls_spdif[0], 1)) < 0)
            return err;
      switch (ac97->id & AC97_ID_CS_MASK) {
      case AC97_ID_CS4205:
            if ((err = patch_build_controls(ac97, &snd_ac97_cirrus_controls_spdif[1], 1)) < 0)
                  return err;
            break;
      }
      /* set default PCM S/PDIF params */
      /* consumer,PCM audio,no copyright,no preemphasis,PCM coder,original,48000Hz */
      snd_ac97_write_cache(ac97, AC97_CSR_SPDIF, 0x0a20);
      return 0;
}

static struct snd_ac97_build_ops patch_cirrus_ops = {
      .build_spdif = patch_cirrus_build_spdif
};

int patch_cirrus_spdif(ac97_t * ac97)
{
      /* Basically, the cs4201/cs4205/cs4297a has non-standard sp/dif registers.
         WHY CAN'T ANYONE FOLLOW THE BLOODY SPEC?  *sigh*
         - sp/dif EA ID is not set, but sp/dif is always present.
         - enable/disable is spdif register bit 15.
         - sp/dif control register is 0x68.  differs from AC97:
         - valid is bit 14 (vs 15)
         - no DRS
         - only 44.1/48k [00 = 48, 01=44,1] (AC97 is 00=44.1, 10=48)
         - sp/dif ssource select is in 0x5e bits 0,1.
      */

      ac97->build_ops = &patch_cirrus_ops;
      ac97->flags |= AC97_CS_SPDIF; 
      ac97->rates[AC97_RATES_SPDIF] &= ~SNDRV_PCM_RATE_32000;
        ac97->ext_id |= AC97_EI_SPDIF;    /* force the detection of spdif */
      snd_ac97_write_cache(ac97, AC97_CSR_ACMODE, 0x0080);
      return 0;
}

int patch_cirrus_cs4299(ac97_t * ac97)
{
      /* force the detection of PC Beep */
      ac97->flags |= AC97_HAS_PC_BEEP;
      
      return patch_cirrus_spdif(ac97);
}

/*
 * Conexant codecs
 */
static const snd_kcontrol_new_t snd_ac97_conexant_controls_spdif[1] = {
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH), AC97_CXR_AUDIO_MISC, 3, 1, 0),
};

static int patch_conexant_build_spdif(ac97_t * ac97)
{
      int err;

      /* con mask, pro mask, default */
      if ((err = patch_build_controls(ac97, &snd_ac97_controls_spdif[0], 3)) < 0)
            return err;
      /* switch */
      if ((err = patch_build_controls(ac97, &snd_ac97_conexant_controls_spdif[0], 1)) < 0)
            return err;
      /* set default PCM S/PDIF params */
      /* consumer,PCM audio,no copyright,no preemphasis,PCM coder,original,48000Hz */
      snd_ac97_write_cache(ac97, AC97_CXR_AUDIO_MISC,
                       snd_ac97_read(ac97, AC97_CXR_AUDIO_MISC) & ~(AC97_CXR_SPDIFEN|AC97_CXR_COPYRGT|AC97_CXR_SPDIF_MASK));
      return 0;
}

static struct snd_ac97_build_ops patch_conexant_ops = {
      .build_spdif = patch_conexant_build_spdif
};

int patch_conexant(ac97_t * ac97)
{
      ac97->build_ops = &patch_conexant_ops;
      ac97->flags |= AC97_CX_SPDIF;
        ac97->ext_id |= AC97_EI_SPDIF;    /* force the detection of spdif */
      ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_48000; /* 48k only */
      return 0;
}

/*
 * Analog Device AD18xx, AD19xx codecs
 */
#ifdef CONFIG_PM
static void ad18xx_resume(ac97_t *ac97)
{
      static unsigned short setup_regs[] = {
            AC97_AD_MISC, AC97_AD_SERIAL_CFG, AC97_AD_JACK_SPDIF,
      };
      int i, codec;

      for (i = 0; i < (int)ARRAY_SIZE(setup_regs); i++) {
            unsigned short reg = setup_regs[i];
            if (test_bit(reg, ac97->reg_accessed)) {
                  snd_ac97_write(ac97, reg, ac97->regs[reg]);
                  snd_ac97_read(ac97, reg);
            }
      }

      if (! (ac97->flags & AC97_AD_MULTI))
            /* normal restore */
            snd_ac97_restore_status(ac97);
      else {
            /* restore the AD18xx codec configurations */
            for (codec = 0; codec < 3; codec++) {
                  if (! ac97->spec.ad18xx.id[codec])
                        continue;
                  /* select single codec */
                  snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
                                   ac97->spec.ad18xx.unchained[codec] | ac97->spec.ad18xx.chained[codec]);
                  ac97->bus->ops->write(ac97, AC97_AD_CODEC_CFG, ac97->spec.ad18xx.codec_cfg[codec]);
            }
            /* select all codecs */
            snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);

            /* restore status */
            for (i = 2; i < 0x7c ; i += 2) {
                  if (i == AC97_POWERDOWN || i == AC97_EXTENDED_ID)
                        continue;
                  if (test_bit(i, ac97->reg_accessed)) {
                        /* handle multi codecs for AD18xx */
                        if (i == AC97_PCM) {
                              for (codec = 0; codec < 3; codec++) {
                                    if (! ac97->spec.ad18xx.id[codec])
                                          continue;
                                    /* select single codec */
                                    snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
                                                     ac97->spec.ad18xx.unchained[codec] | ac97->spec.ad18xx.chained[codec]);
                                    /* update PCM bits */
                                    ac97->bus->ops->write(ac97, AC97_PCM, ac97->spec.ad18xx.pcmreg[codec]);
                              }
                              /* select all codecs */
                              snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
                              continue;
                        } else if (i == AC97_AD_TEST ||
                                 i == AC97_AD_CODEC_CFG ||
                                 i == AC97_AD_SERIAL_CFG)
                              continue; /* ignore */
                  }
                  snd_ac97_write(ac97, i, ac97->regs[i]);
                  snd_ac97_read(ac97, i);
            }
      }

      snd_ac97_restore_iec958(ac97);
}
#endif

int patch_ad1819(ac97_t * ac97)
{
      unsigned short scfg;

      // patch for Analog Devices
      scfg = snd_ac97_read(ac97, AC97_AD_SERIAL_CFG);
      snd_ac97_write_cache(ac97, AC97_AD_SERIAL_CFG, scfg | 0x7000); /* select all codecs */
      return 0;
}

static unsigned short patch_ad1881_unchained(ac97_t * ac97, int idx, unsigned short mask)
{
      unsigned short val;

      // test for unchained codec
      snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, mask);
      snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0000);      /* ID0C, ID1C, SDIE = off */
      val = snd_ac97_read(ac97, AC97_VENDOR_ID2);
      if ((val & 0xff40) != 0x5340)
            return 0;
      ac97->spec.ad18xx.unchained[idx] = mask;
      ac97->spec.ad18xx.id[idx] = val;
      ac97->spec.ad18xx.codec_cfg[idx] = 0x0000;
      return mask;
}

static int patch_ad1881_chained1(ac97_t * ac97, int idx, unsigned short codec_bits)
{
      static int cfg_bits[3] = { 1<<12, 1<<14, 1<<13 };
      unsigned short val;
      
      snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, cfg_bits[idx]);
      snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0004);      // SDIE
      val = snd_ac97_read(ac97, AC97_VENDOR_ID2);
      if ((val & 0xff40) != 0x5340)
            return 0;
      if (codec_bits)
            snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, codec_bits);
      ac97->spec.ad18xx.chained[idx] = cfg_bits[idx];
      ac97->spec.ad18xx.id[idx] = val;
      ac97->spec.ad18xx.codec_cfg[idx] = codec_bits ? codec_bits : 0x0004;
      return 1;
}

static void patch_ad1881_chained(ac97_t * ac97, int unchained_idx, int cidx1, int cidx2)
{
      // already detected?
      if (ac97->spec.ad18xx.unchained[cidx1] || ac97->spec.ad18xx.chained[cidx1])
            cidx1 = -1;
      if (ac97->spec.ad18xx.unchained[cidx2] || ac97->spec.ad18xx.chained[cidx2])
            cidx2 = -1;
      if (cidx1 < 0 && cidx2 < 0)
            return;
      // test for chained codecs
      snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
                       ac97->spec.ad18xx.unchained[unchained_idx]);
      snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0002);            // ID1C
      ac97->spec.ad18xx.codec_cfg[unchained_idx] = 0x0002;
      if (cidx1 >= 0) {
            if (patch_ad1881_chained1(ac97, cidx1, 0x0006))       // SDIE | ID1C
                  patch_ad1881_chained1(ac97, cidx2, 0);
            else if (patch_ad1881_chained1(ac97, cidx2, 0x0006))  // SDIE | ID1C
                  patch_ad1881_chained1(ac97, cidx1, 0);
      } else if (cidx2 >= 0) {
            patch_ad1881_chained1(ac97, cidx2, 0);
      }
}

static struct snd_ac97_build_ops patch_ad1881_build_ops = {
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1881(ac97_t * ac97)
{
      static const char cfg_idxs[3][2] = {
            {2, 1},
            {0, 2},
            {0, 1}
      };
      
      // patch for Analog Devices
      unsigned short codecs[3];
      unsigned short val;
      int idx, num;

      val = snd_ac97_read(ac97, AC97_AD_SERIAL_CFG);
      snd_ac97_write_cache(ac97, AC97_AD_SERIAL_CFG, val);
      codecs[0] = patch_ad1881_unchained(ac97, 0, (1<<12));
      codecs[1] = patch_ad1881_unchained(ac97, 1, (1<<14));
      codecs[2] = patch_ad1881_unchained(ac97, 2, (1<<13));

      snd_runtime_check(codecs[0] | codecs[1] | codecs[2], goto __end);

      for (idx = 0; idx < 3; idx++)
            if (ac97->spec.ad18xx.unchained[idx])
                  patch_ad1881_chained(ac97, idx, cfg_idxs[idx][0], cfg_idxs[idx][1]);

      if (ac97->spec.ad18xx.id[1]) {
            ac97->flags |= AC97_AD_MULTI;
            ac97->scaps |= AC97_SCAP_SURROUND_DAC;
      }
      if (ac97->spec.ad18xx.id[2]) {
            ac97->flags |= AC97_AD_MULTI;
            ac97->scaps |= AC97_SCAP_CENTER_LFE_DAC;
      }

      __end:
      /* select all codecs */
      snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
      /* check if only one codec is present */
      for (idx = num = 0; idx < 3; idx++)
            if (ac97->spec.ad18xx.id[idx])
                  num++;
      if (num == 1) {
            /* ok, deselect all ID bits */
            snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0000);
            ac97->spec.ad18xx.codec_cfg[0] = 
                  ac97->spec.ad18xx.codec_cfg[1] = 
                  ac97->spec.ad18xx.codec_cfg[2] = 0x0000;
      }
      /* required for AD1886/AD1885 combination */
      ac97->ext_id = snd_ac97_read(ac97, AC97_EXTENDED_ID);
      if (ac97->spec.ad18xx.id[0]) {
            ac97->id &= 0xffff0000;
            ac97->id |= ac97->spec.ad18xx.id[0];
      }
      ac97->build_ops = &patch_ad1881_build_ops;
      return 0;
}

static const snd_kcontrol_new_t snd_ac97_controls_ad1885[] = {
      AC97_SINGLE("Digital Mono Direct", AC97_AD_MISC, 11, 1, 0),
      /* AC97_SINGLE("Digital Audio Mode", AC97_AD_MISC, 12, 1, 0), */ /* seems problematic */
      AC97_SINGLE("Low Power Mixer", AC97_AD_MISC, 14, 1, 0),
      AC97_SINGLE("Zero Fill DAC", AC97_AD_MISC, 15, 1, 0),
      AC97_SINGLE("Headphone Jack Sense", AC97_AD_JACK_SPDIF, 9, 1, 1), /* inverted */
      AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 8, 1, 1), /* inverted */
};

static int patch_ad1885_specific(ac97_t * ac97)
{
      int err;

      if ((err = patch_build_controls(ac97, snd_ac97_controls_ad1885, ARRAY_SIZE(snd_ac97_controls_ad1885))) < 0)
            return err;
      return 0;
}

static struct snd_ac97_build_ops patch_ad1885_build_ops = {
      .build_specific = &patch_ad1885_specific,
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1885(ac97_t * ac97)
{
      patch_ad1881(ac97);
      /* This is required to deal with the Intel D815EEAL2 */
      /* i.e. Line out is actually headphone out from codec */

      /* set default */
      snd_ac97_write_cache(ac97, AC97_AD_MISC, 0x0404);

      ac97->build_ops = &patch_ad1885_build_ops;
      return 0;
}

int patch_ad1886(ac97_t * ac97)
{
      patch_ad1881(ac97);
      /* Presario700 workaround */
      /* for Jack Sense/SPDIF Register misetting causing */
      snd_ac97_write_cache(ac97, AC97_AD_JACK_SPDIF, 0x0010);
      return 0;
}

/* MISC bits */
#define AC97_AD198X_MBC       0x0003      /* mic boost */
#define AC97_AD198X_MBC_20    0x0000      /* +20dB */
#define AC97_AD198X_MBC_10    0x0001      /* +10dB */
#define AC97_AD198X_MBC_30    0x0002      /* +30dB */
#define AC97_AD198X_VREFD     0x0004      /* VREF high-Z */
#define AC97_AD198X_VREFH     0x0008      /* 2.25V, 3.7V */
#define AC97_AD198X_VREF_0    0x000c      /* 0V */
#define AC97_AD198X_SRU       0x0010      /* sample rate unlock */
#define AC97_AD198X_LOSEL     0x0020      /* LINE_OUT amplifiers input select */
#define AC97_AD198X_2MIC      0x0040      /* 2-channel mic select */
#define AC97_AD198X_SPRD      0x0080      /* SPREAD enable */
#define AC97_AD198X_DMIX0     0x0100      /* downmix mode: 0 = 6-to-4, 1 = 6-to-2 downmix */
#define AC97_AD198X_DMIX1     0x0200      /* downmix mode: 1 = enabled */
#define AC97_AD198X_HPSEL     0x0400      /* headphone amplifier input select */
#define AC97_AD198X_CLDIS     0x0800      /* center/lfe disable */
#define AC97_AD198X_LODIS     0x1000      /* LINE_OUT disable */
#define AC97_AD198X_MSPLT     0x2000      /* mute split */
#define AC97_AD198X_AC97NC    0x4000      /* AC97 no compatible mode */
#define AC97_AD198X_DACZ      0x8000      /* DAC zero-fill mode */


static int snd_ac97_ad198x_spdif_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
      static char *texts[2] = { "AC-Link", "A/D Converter" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 2;
      if (uinfo->value.enumerated.item > 1)
            uinfo->value.enumerated.item = 1;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_ad198x_spdif_source_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_AD_SERIAL_CFG];
      ucontrol->value.enumerated.item[0] = (val >> 2) & 1;
      return 0;
}

static int snd_ac97_ad198x_spdif_source_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      if (ucontrol->value.enumerated.item[0] > 1)
            return -EINVAL;
      val = ucontrol->value.enumerated.item[0] << 2;
      return snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x0004, val);
}

static const snd_kcontrol_new_t snd_ac97_ad198x_spdif_source = {
      .iface      = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source",
      .info = snd_ac97_ad198x_spdif_source_info,
      .get  = snd_ac97_ad198x_spdif_source_get,
      .put  = snd_ac97_ad198x_spdif_source_put,
};

static int patch_ad198x_post_spdif(ac97_t * ac97)
{
      return patch_build_controls(ac97, &snd_ac97_ad198x_spdif_source, 1);
}

static const snd_kcontrol_new_t snd_ac97_ad1981x_jack_sense[] = {
      AC97_SINGLE("Headphone Jack Sense", AC97_AD_JACK_SPDIF, 11, 1, 0),
      AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 12, 1, 0),
};

static int patch_ad1981a_specific(ac97_t * ac97)
{
      return patch_build_controls(ac97, snd_ac97_ad1981x_jack_sense,
                            ARRAY_SIZE(snd_ac97_ad1981x_jack_sense));
}

static struct snd_ac97_build_ops patch_ad1981a_build_ops = {
      .build_post_spdif = patch_ad198x_post_spdif,
      .build_specific = patch_ad1981a_specific,
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1981a(ac97_t *ac97)
{
      patch_ad1881(ac97);
      ac97->build_ops = &patch_ad1981a_build_ops;
      snd_ac97_update_bits(ac97, AC97_AD_MISC, AC97_AD198X_MSPLT, AC97_AD198X_MSPLT);
      ac97->flags |= AC97_STEREO_MUTES;
      snd_ac97_update_bits(ac97, AC97_AD_JACK_SPDIF, 1<<11, 1<<11); /* HP jack sense */
      return 0;
}

static const snd_kcontrol_new_t snd_ac97_ad198x_2cmic =
AC97_SINGLE("Stereo Mic", AC97_AD_MISC, 6, 1, 0);

static int patch_ad1981b_specific(ac97_t *ac97)
{
      int err;

      if ((err = patch_build_controls(ac97, &snd_ac97_ad198x_2cmic, 1)) < 0)
            return err;
      return patch_build_controls(ac97, snd_ac97_ad1981x_jack_sense,
                            ARRAY_SIZE(snd_ac97_ad1981x_jack_sense));
}

static struct snd_ac97_build_ops patch_ad1981b_build_ops = {
      .build_post_spdif = patch_ad198x_post_spdif,
      .build_specific = patch_ad1981b_specific,
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1981b(ac97_t *ac97)
{
      patch_ad1881(ac97);
      ac97->build_ops = &patch_ad1981b_build_ops;
      snd_ac97_update_bits(ac97, AC97_AD_MISC, AC97_AD198X_MSPLT, AC97_AD198X_MSPLT);
      ac97->flags |= AC97_STEREO_MUTES;
      snd_ac97_update_bits(ac97, AC97_AD_JACK_SPDIF, 1<<11, 1<<11); /* HP jack sense */
      return 0;
}

static int snd_ac97_ad1888_lohpsel_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
      uinfo->count = 1;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = 1;
      return 0;
}

static int snd_ac97_ad1888_lohpsel_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t* ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_AD_MISC];
      ucontrol->value.integer.value[0] = !(val & AC97_AD198X_LOSEL);
      return 0;
}

static int snd_ac97_ad1888_lohpsel_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = !ucontrol->value.integer.value[0]
            ? (AC97_AD198X_LOSEL | AC97_AD198X_HPSEL) : 0;
      return snd_ac97_update_bits(ac97, AC97_AD_MISC,
                            AC97_AD198X_LOSEL | AC97_AD198X_HPSEL, val);
}

static int snd_ac97_ad1888_downmix_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      static char *texts[3] = {"Off", "6 -> 4", "6 -> 2"};

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 3;
      if (uinfo->value.enumerated.item > 2)
            uinfo->value.enumerated.item = 2;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_ad1888_downmix_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t* ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_AD_MISC];
      if (!(val & AC97_AD198X_DMIX1))
            ucontrol->value.enumerated.item[0] = 0;
      else
            ucontrol->value.enumerated.item[0] = 1 + ((val >> 8) & 1);
      return 0;
}

static int snd_ac97_ad1888_downmix_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      if (ucontrol->value.enumerated.item[0] > 2)
            return -EINVAL;
      if (ucontrol->value.enumerated.item[0] == 0)
            val = 0;
      else
            val = AC97_AD198X_DMIX1 |
                  ((ucontrol->value.enumerated.item[0] - 1) << 8);
      return snd_ac97_update_bits(ac97, AC97_AD_MISC,
                            AC97_AD198X_DMIX0 | AC97_AD198X_DMIX1, val);
}

static const snd_kcontrol_new_t snd_ac97_ad1888_controls[] = {
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Exchange Front/Surround",
            .info = snd_ac97_ad1888_lohpsel_info,
            .get = snd_ac97_ad1888_lohpsel_get,
            .put = snd_ac97_ad1888_lohpsel_put
      },
      AC97_SINGLE("Spread Front to Surround and Center/LFE", AC97_AD_MISC, 7, 1, 0),
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Downmix",
            .info = snd_ac97_ad1888_downmix_info,
            .get = snd_ac97_ad1888_downmix_get,
            .put = snd_ac97_ad1888_downmix_put
      },
      AC97_SINGLE("Surround Jack as Input", AC97_AD_MISC, 12, 1, 0),
      AC97_SINGLE("Center/LFE Jack as Input", AC97_AD_MISC, 11, 1, 0),
};

static int patch_ad1888_specific(ac97_t *ac97)
{
      /* rename 0x04 as "Master" and 0x02 as "Master Surround" */
      snd_ac97_rename_vol_ctl(ac97, "Master Playback", "Master Surround Playback");
      snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Master Playback");
      return patch_build_controls(ac97, snd_ac97_ad1888_controls, ARRAY_SIZE(snd_ac97_ad1888_controls));
}

static struct snd_ac97_build_ops patch_ad1888_build_ops = {
      .build_post_spdif = patch_ad198x_post_spdif,
      .build_specific = patch_ad1888_specific,
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1888(ac97_t * ac97)
{
      unsigned short misc;
      
      patch_ad1881(ac97);
      ac97->build_ops = &patch_ad1888_build_ops;
      /* Switch FRONT/SURROUND LINE-OUT/HP-OUT default connection */
      /* it seems that most vendors connect line-out connector to headphone out of AC'97 */
      /* AD-compatible mode */
      /* Stereo mutes enabled */
      misc = snd_ac97_read(ac97, AC97_AD_MISC);
      snd_ac97_write_cache(ac97, AC97_AD_MISC, misc |
                       AC97_AD198X_LOSEL |
                       AC97_AD198X_HPSEL |
                       AC97_AD198X_MSPLT |
                       AC97_AD198X_AC97NC);
      ac97->flags |= AC97_STEREO_MUTES;
      return 0;
}

static int patch_ad1980_specific(ac97_t *ac97)
{
      int err;

      if ((err = patch_ad1888_specific(ac97)) < 0)
            return err;
      return patch_build_controls(ac97, &snd_ac97_ad198x_2cmic, 1);
}

static struct snd_ac97_build_ops patch_ad1980_build_ops = {
      .build_post_spdif = patch_ad198x_post_spdif,
      .build_specific = patch_ad1980_specific,
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1980(ac97_t * ac97)
{
      patch_ad1888(ac97);
      ac97->build_ops = &patch_ad1980_build_ops;
      return 0;
}

static const snd_kcontrol_new_t snd_ac97_ad1985_controls[] = {
      AC97_SINGLE("Center/LFE Jack as Mic", AC97_AD_SERIAL_CFG, 9, 1, 0),
      AC97_SINGLE("Exchange Center/LFE", AC97_AD_SERIAL_CFG, 3, 1, 0)
};

static int patch_ad1985_specific(ac97_t *ac97)
{
      int err;

      if ((err = patch_ad1980_specific(ac97)) < 0)
            return err;
      return patch_build_controls(ac97, snd_ac97_ad1985_controls, ARRAY_SIZE(snd_ac97_ad1985_controls));
}

static struct snd_ac97_build_ops patch_ad1985_build_ops = {
      .build_post_spdif = patch_ad198x_post_spdif,
      .build_specific = patch_ad1985_specific,
#ifdef CONFIG_PM
      .resume = ad18xx_resume
#endif
};

int patch_ad1985(ac97_t * ac97)
{
      unsigned short misc;
      
      patch_ad1881(ac97);
      ac97->build_ops = &patch_ad1985_build_ops;
      misc = snd_ac97_read(ac97, AC97_AD_MISC);
      /* switch front/surround line-out/hp-out */
      /* center/LFE, mic in 3.75V mode */
      /* AD-compatible mode */
      /* Stereo mutes enabled */
      /* in accordance with ADI driver: misc | 0x5c28 */
      snd_ac97_write_cache(ac97, AC97_AD_MISC, misc |
                       AC97_AD198X_VREFH |
                       AC97_AD198X_LOSEL |
                       AC97_AD198X_HPSEL |
                       AC97_AD198X_CLDIS |
                       AC97_AD198X_LODIS |
                       AC97_AD198X_MSPLT |
                       AC97_AD198X_AC97NC);
      ac97->flags |= AC97_STEREO_MUTES;
      /* on AD1985 rev. 3, AC'97 revision bits are zero */
      ac97->ext_id = (ac97->ext_id & ~AC97_EI_REV_MASK) | AC97_EI_REV_23;
      return 0;
}

/*
 * realtek ALC65x/850 codecs
 */
static int snd_ac97_alc650_mic_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = (ac97->regs[AC97_ALC650_MULTICH] >> 10) & 1;
        return 0;
}

static int snd_ac97_alc650_mic_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      int change, val;
      val = !!(snd_ac97_read(ac97, AC97_ALC650_MULTICH) & (1 << 10));
      change = (ucontrol->value.integer.value[0] != val);
      if (change) {
            /* disable/enable vref */
            snd_ac97_update_bits(ac97, AC97_ALC650_CLOCK, 1 << 12,
                             ucontrol->value.integer.value[0] ? (1 << 12) : 0);
            /* turn on/off center-on-mic */
            snd_ac97_update_bits(ac97, AC97_ALC650_MULTICH, 1 << 10,
                             ucontrol->value.integer.value[0] ? (1 << 10) : 0);
            /* GPIO0 high for mic */
            snd_ac97_update_bits(ac97, AC97_ALC650_GPIO_STATUS, 0x100,
                             ucontrol->value.integer.value[0] ? 0 : 0x100);
        }
        return change;
}

static const snd_kcontrol_new_t snd_ac97_controls_alc650[] = {
      AC97_SINGLE("Duplicate Front", AC97_ALC650_MULTICH, 0, 1, 0),
      AC97_SINGLE("Surround Down Mix", AC97_ALC650_MULTICH, 1, 1, 0),
      AC97_SINGLE("Center/LFE Down Mix", AC97_ALC650_MULTICH, 2, 1, 0),
      AC97_SINGLE("Exchange Center/LFE", AC97_ALC650_MULTICH, 3, 1, 0),
      /* 4: Analog Input To Surround */
      /* 5: Analog Input To Center/LFE */
      /* 6: Independent Master Volume Right */
      /* 7: Independent Master Volume Left */
      /* 8: reserved */
      AC97_SINGLE("Line-In As Surround", AC97_ALC650_MULTICH, 9, 1, 0),
      /* 10: mic, see below */
      /* 11-13: in IEC958 controls */
      AC97_SINGLE("Swap Surround Slot", AC97_ALC650_MULTICH, 14, 1, 0),
#if 0 /* always set in patch_alc650 */
      AC97_SINGLE("IEC958 Input Clock Enable", AC97_ALC650_CLOCK, 0, 1, 0),
      AC97_SINGLE("IEC958 Input Pin Enable", AC97_ALC650_CLOCK, 1, 1, 0),
      AC97_SINGLE("Surround DAC Switch", AC97_ALC650_SURR_DAC_VOL, 15, 1, 1),
      AC97_DOUBLE("Surround DAC Volume", AC97_ALC650_SURR_DAC_VOL, 8, 0, 31, 1),
      AC97_SINGLE("Center/LFE DAC Switch", AC97_ALC650_LFE_DAC_VOL, 15, 1, 1),
      AC97_DOUBLE("Center/LFE DAC Volume", AC97_ALC650_LFE_DAC_VOL, 8, 0, 31, 1),
#endif
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Mic As Center/LFE",
            .info = snd_ac97_info_volsw,
            .get = snd_ac97_alc650_mic_get,
            .put = snd_ac97_alc650_mic_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },
};

static const snd_kcontrol_new_t snd_ac97_spdif_controls_alc650[] = {
        AC97_SINGLE("IEC958 Capture Switch", AC97_ALC650_MULTICH, 11, 1, 0),
        AC97_SINGLE("Analog to IEC958 Output", AC97_ALC650_MULTICH, 12, 1, 0),
      /* disable this controls since it doesn't work as expected */
      /* AC97_SINGLE("IEC958 Input Monitor", AC97_ALC650_MULTICH, 13, 1, 0), */
};

static int patch_alc650_specific(ac97_t * ac97)
{
      int err;

      if ((err = patch_build_controls(ac97, snd_ac97_controls_alc650, ARRAY_SIZE(snd_ac97_controls_alc650))) < 0)
            return err;
      if (ac97->ext_id & AC97_EI_SPDIF) {
            if ((err = patch_build_controls(ac97, snd_ac97_spdif_controls_alc650, ARRAY_SIZE(snd_ac97_spdif_controls_alc650))) < 0)
                  return err;
      }
      return 0;
}

static struct snd_ac97_build_ops patch_alc650_ops = {
      .build_specific   = patch_alc650_specific
};

int patch_alc650(ac97_t * ac97)
{
      unsigned short val;

      ac97->build_ops = &patch_alc650_ops;

      /* determine the revision */
      val = snd_ac97_read(ac97, AC97_ALC650_REVISION) & 0x3f;
      if (val < 3)
            ac97->id = 0x414c4720;          /* Old version */
      else if (val < 0x10)
            ac97->id = 0x414c4721;          /* D version */
      else if (val < 0x20)
            ac97->id = 0x414c4722;          /* E version */
      else if (val < 0x30)
            ac97->id = 0x414c4723;          /* F version */

      /* revision E or F */
      /* FIXME: what about revision D ? */
      ac97->spec.dev_flags = (ac97->id == 0x414c4722 ||
                        ac97->id == 0x414c4723);

      /* enable AC97_ALC650_GPIO_SETUP, AC97_ALC650_CLOCK for R/W */
      snd_ac97_write_cache(ac97, AC97_ALC650_GPIO_STATUS, 
            snd_ac97_read(ac97, AC97_ALC650_GPIO_STATUS) | 0x8000);

      /* Enable SPDIF-IN only on Rev.E and above */
      val = snd_ac97_read(ac97, AC97_ALC650_CLOCK);
      /* SPDIF IN with pin 47 */
      if (ac97->spec.dev_flags)
            val |= 0x03; /* enable */
      else
            val &= ~0x03; /* disable */
      snd_ac97_write_cache(ac97, AC97_ALC650_CLOCK, val);

      /* set default: slot 3,4,7,8,6,9
         spdif-in monitor off, analog-spdif off, spdif-in off
         center on mic off, surround on line-in off
         downmix off, duplicate front off
      */
      snd_ac97_write_cache(ac97, AC97_ALC650_MULTICH, 0);

      /* set GPIO0 for mic bias */
      /* GPIO0 pin output, no interrupt, high */
      snd_ac97_write_cache(ac97, AC97_ALC650_GPIO_SETUP,
                       snd_ac97_read(ac97, AC97_ALC650_GPIO_SETUP) | 0x01);
      snd_ac97_write_cache(ac97, AC97_ALC650_GPIO_STATUS,
                       (snd_ac97_read(ac97, AC97_ALC650_GPIO_STATUS) | 0x100) & ~0x10);

      /* full DAC volume */
      snd_ac97_write_cache(ac97, AC97_ALC650_SURR_DAC_VOL, 0x0808);
      snd_ac97_write_cache(ac97, AC97_ALC650_LFE_DAC_VOL, 0x0808);
      return 0;
}

static int snd_ac97_alc655_mic_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = (ac97->regs[AC97_ALC650_MULTICH] >> 10) & 1;
        return 0;
}

static int snd_ac97_alc655_mic_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      /* misc control; vrefout disable */
      snd_ac97_update_bits(ac97, AC97_ALC650_CLOCK, 1 << 12,
                       ucontrol->value.integer.value[0] ? (1 << 12) : 0);
      return ac97_update_bits_page(ac97, AC97_ALC650_MULTICH, 1 << 10,
                             ucontrol->value.integer.value[0] ? (1 << 10) : 0,
                             0);
}


static const snd_kcontrol_new_t snd_ac97_controls_alc655[] = {
      AC97_PAGE_SINGLE("Duplicate Front", AC97_ALC650_MULTICH, 0, 1, 0, 0),
      AC97_PAGE_SINGLE("Line-In As Surround", AC97_ALC650_MULTICH, 9, 1, 0, 0),
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Mic As Center/LFE",
            .info = snd_ac97_info_volsw,
            .get = snd_ac97_alc655_mic_get,
            .put = snd_ac97_alc655_mic_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },
};

static int alc655_iec958_route_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      static char *texts_655[3] = { "PCM", "Analog In", "IEC958 In" };
      static char *texts_658[4] = { "PCM", "Analog1 In", "Analog2 In", "IEC958 In" };
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = ac97->spec.dev_flags ? 4 : 3;
      if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
            uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
      strcpy(uinfo->value.enumerated.name,
             ac97->spec.dev_flags ?
             texts_658[uinfo->value.enumerated.item] :
             texts_655[uinfo->value.enumerated.item]);
      return 0;
}

static int alc655_iec958_route_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_ALC650_MULTICH];
      val = (val >> 12) & 3;
      if (ac97->spec.dev_flags && val == 3)
            val = 0;
      ucontrol->value.enumerated.item[0] = val;
      return 0;
}

static int alc655_iec958_route_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      return ac97_update_bits_page(ac97, AC97_ALC650_MULTICH, 3 << 12,
                             (unsigned short)ucontrol->value.enumerated.item[0],
                             0);
}

static const snd_kcontrol_new_t snd_ac97_spdif_controls_alc655[] = {
        AC97_PAGE_SINGLE("IEC958 Capture Switch", AC97_ALC650_MULTICH, 11, 1, 0, 0),
      /* disable this controls since it doesn't work as expected */
        /* AC97_PAGE_SINGLE("IEC958 Input Monitor", AC97_ALC650_MULTICH, 14, 1, 0, 0), */
      {
            .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name   = "IEC958 Playback Route",
            .info   = alc655_iec958_route_info,
            .get    = alc655_iec958_route_get,
            .put    = alc655_iec958_route_put,
      },
};

static int patch_alc655_specific(ac97_t * ac97)
{
      int err;

      if ((err = patch_build_controls(ac97, snd_ac97_controls_alc655, ARRAY_SIZE(snd_ac97_controls_alc655))) < 0)
            return err;
      if (ac97->ext_id & AC97_EI_SPDIF) {
            if ((err = patch_build_controls(ac97, snd_ac97_spdif_controls_alc655, ARRAY_SIZE(snd_ac97_spdif_controls_alc655))) < 0)
                  return err;
      }
      return 0;
}

static struct snd_ac97_build_ops patch_alc655_ops = {
      .build_specific   = patch_alc655_specific
};

int patch_alc655(ac97_t * ac97)
{
      unsigned int val;

      ac97->spec.dev_flags = (ac97->id == 0x414c4780); /* ALC658 */

      ac97->build_ops = &patch_alc655_ops;

      /* assume only page 0 for writing cache */
      snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, AC97_PAGE_VENDOR);

      /* adjust default values */
      val = snd_ac97_read(ac97, 0x7a); /* misc control */
      if (ac97->id == 0x414c4780) /* ALC658 */
            val &= ~(1 << 1); /* Pin 47 is spdif input pin */
      else /* ALC655 */
            val |= (1 << 1); /* Pin 47 is spdif input pin */
      val &= ~(1 << 12); /* vref enable */
      snd_ac97_write_cache(ac97, 0x7a, val);
      /* set default: spdif-in enabled,
         spdif-in monitor off, spdif-in PCM off
         center on mic off, surround on line-in off
         duplicate front off
      */
      snd_ac97_write_cache(ac97, AC97_ALC650_MULTICH, 1<<15);

      /* full DAC volume */
      snd_ac97_write_cache(ac97, AC97_ALC650_SURR_DAC_VOL, 0x0808);
      snd_ac97_write_cache(ac97, AC97_ALC650_LFE_DAC_VOL, 0x0808);
      return 0;
}


#define AC97_ALC850_JACK_SELECT     0x76
#define AC97_ALC850_MISC1     0x7a

static int ac97_alc850_surround_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = ((ac97->regs[AC97_ALC850_JACK_SELECT] >> 12) & 7) == 2;
        return 0;
}

static int ac97_alc850_surround_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      /* SURR 1kOhm (bit4), Amp (bit5) */
      snd_ac97_update_bits(ac97, AC97_ALC850_MISC1, (1<<4)|(1<<5),
                       ucontrol->value.integer.value[0] ? (1<<5) : (1<<4));
      /* LINE-IN = 0, SURROUND = 2 */
      return snd_ac97_update_bits(ac97, AC97_ALC850_JACK_SELECT, 7 << 12,
                            ucontrol->value.integer.value[0] ? (2<<12) : (0<<12));
}

static int ac97_alc850_mic_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = ((ac97->regs[AC97_ALC850_JACK_SELECT] >> 4) & 7) == 2;
        return 0;
}

static int ac97_alc850_mic_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      /* Vref disable (bit12), 1kOhm (bit13) */
      snd_ac97_update_bits(ac97, AC97_ALC850_MISC1, (1<<12)|(1<<13),
                       ucontrol->value.integer.value[0] ? (1<<12) : (1<<13));
      /* MIC-IN = 1, CENTER-LFE = 2 */
      return snd_ac97_update_bits(ac97, AC97_ALC850_JACK_SELECT, 7 << 4,
                            ucontrol->value.integer.value[0] ? (2<<4) : (1<<4));
}

static const snd_kcontrol_new_t snd_ac97_controls_alc850[] = {
      AC97_PAGE_SINGLE("Duplicate Front", AC97_ALC650_MULTICH, 0, 1, 0, 0),
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Line-In As Surround",
            .info = snd_ac97_info_volsw,
            .get = ac97_alc850_surround_get,
            .put = ac97_alc850_surround_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Mic As Center/LFE",
            .info = snd_ac97_info_volsw,
            .get = ac97_alc850_mic_get,
            .put = ac97_alc850_mic_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },

};

static int patch_alc850_specific(ac97_t *ac97)
{
      int err;

      if ((err = patch_build_controls(ac97, snd_ac97_controls_alc850, ARRAY_SIZE(snd_ac97_controls_alc850))) < 0)
            return err;
      if (ac97->ext_id & AC97_EI_SPDIF) {
            if ((err = patch_build_controls(ac97, snd_ac97_spdif_controls_alc655, ARRAY_SIZE(snd_ac97_spdif_controls_alc655))) < 0)
                  return err;
      }
      return 0;
}

static struct snd_ac97_build_ops patch_alc850_ops = {
      .build_specific   = patch_alc850_specific
};

int patch_alc850(ac97_t *ac97)
{
      ac97->build_ops = &patch_alc850_ops;

      ac97->spec.dev_flags = 0; /* for IEC958 playback route - ALC655 compatible */

      /* assume only page 0 for writing cache */
      snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, AC97_PAGE_VENDOR);

      /* adjust default values */
      /* set default: spdif-in enabled,
         spdif-in monitor off, spdif-in PCM off
         center on mic off, surround on line-in off
         duplicate front off
      */
      snd_ac97_write_cache(ac97, AC97_ALC650_MULTICH, 1<<15);
      /* SURR_OUT: on, Surr 1kOhm: on, Surr Amp: off, Front 1kOhm: off
       * Front Amp: on, Vref: enable, Center 1kOhm: on, Mix: on
       */
      snd_ac97_write_cache(ac97, 0x7a, (1<<1)|(1<<4)|(0<<5)|(1<<6)|
                       (1<<7)|(0<<12)|(1<<13)|(0<<14));
      /* detection UIO2,3: all path floating, UIO3: MIC, Vref2: disable,
       * UIO1: FRONT, Vref3: disable, UIO3: LINE, Front-Mic: mute
       */
      snd_ac97_write_cache(ac97, 0x76, (0<<0)|(0<<2)|(1<<4)|(1<<7)|(2<<8)|
                       (1<<11)|(0<<12)|(1<<15));

      /* full DAC volume */
      snd_ac97_write_cache(ac97, AC97_ALC650_SURR_DAC_VOL, 0x0808);
      snd_ac97_write_cache(ac97, AC97_ALC650_LFE_DAC_VOL, 0x0808);
      return 0;
}


/*
 * C-Media CM97xx codecs
 */
static const snd_kcontrol_new_t snd_ac97_cm9738_controls[] = {
      AC97_SINGLE("Line-In As Surround", AC97_CM9738_VENDOR_CTRL, 10, 1, 0),
      AC97_SINGLE("Duplicate Front", AC97_CM9738_VENDOR_CTRL, 13, 1, 0),
};

static int patch_cm9738_specific(ac97_t * ac97)
{
      return patch_build_controls(ac97, snd_ac97_cm9738_controls, ARRAY_SIZE(snd_ac97_cm9738_controls));
}

static struct snd_ac97_build_ops patch_cm9738_ops = {
      .build_specific   = patch_cm9738_specific
};

int patch_cm9738(ac97_t * ac97)
{
      ac97->build_ops = &patch_cm9738_ops;
      /* FIXME: can anyone confirm below? */
      /* CM9738 has no PCM volume although the register reacts */
      ac97->flags |= AC97_HAS_NO_PCM_VOL;
      snd_ac97_write_cache(ac97, AC97_PCM, 0x8000);

      return 0;
}

static int snd_ac97_cmedia_spdif_playback_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
      static char *texts[] = { "Analog", "Digital" };

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = 2;
      if (uinfo->value.enumerated.item > 1)
            uinfo->value.enumerated.item = 1;
      strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
      return 0;
}

static int snd_ac97_cmedia_spdif_playback_source_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short val;

      val = ac97->regs[AC97_CM9739_SPDIF_CTRL];
      ucontrol->value.enumerated.item[0] = (val >> 1) & 0x01;
      return 0;
}

static int snd_ac97_cmedia_spdif_playback_source_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

      return snd_ac97_update_bits(ac97, AC97_CM9739_SPDIF_CTRL,
                            0x01 << 1, 
                            (ucontrol->value.enumerated.item[0] & 0x01) << 1);
}

static const snd_kcontrol_new_t snd_ac97_cm9739_controls_spdif[] = {
      /* BIT 0: SPDI_EN - always true */
      { /* BIT 1: SPDIFS */
            .iface      = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source",
            .info = snd_ac97_cmedia_spdif_playback_source_info,
            .get  = snd_ac97_cmedia_spdif_playback_source_get,
            .put  = snd_ac97_cmedia_spdif_playback_source_put,
      },
      /* BIT 2: IG_SPIV */
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,NONE) "Valid Switch", AC97_CM9739_SPDIF_CTRL, 2, 1, 0),
      /* BIT 3: SPI2F */
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,NONE) "Monitor", AC97_CM9739_SPDIF_CTRL, 3, 1, 0), 
      /* BIT 4: SPI2SDI */
      AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), AC97_CM9739_SPDIF_CTRL, 4, 1, 0),
      /* BIT 8: SPD32 - 32bit SPDIF - not supported yet */
};

static int snd_ac97_cm9739_center_mic_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      if (ac97->regs[AC97_CM9739_MULTI_CHAN] & 0x1000)
            ucontrol->value.integer.value[0] = 1;
      else
            ucontrol->value.integer.value[0] = 0;
      return 0;
}

static int snd_ac97_cm9739_center_mic_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      return snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x3000,
                            ucontrol->value.integer.value[0] ? 
                            0x1000 : 0x2000);
}

static const snd_kcontrol_new_t snd_ac97_cm9739_controls[] = {
      AC97_SINGLE("Line-In As Surround", AC97_CM9739_MULTI_CHAN, 10, 1, 0),
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Mic As Center/LFE",
            .info = snd_ac97_info_volsw,
            .get = snd_ac97_cm9739_center_mic_get,
            .put = snd_ac97_cm9739_center_mic_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },
};

static int patch_cm9739_specific(ac97_t * ac97)
{
      return patch_build_controls(ac97, snd_ac97_cm9739_controls, ARRAY_SIZE(snd_ac97_cm9739_controls));
}

static int patch_cm9739_post_spdif(ac97_t * ac97)
{
      return patch_build_controls(ac97, snd_ac97_cm9739_controls_spdif, ARRAY_SIZE(snd_ac97_cm9739_controls_spdif));
}

static struct snd_ac97_build_ops patch_cm9739_ops = {
      .build_specific   = patch_cm9739_specific,
      .build_post_spdif = patch_cm9739_post_spdif
};

int patch_cm9739(ac97_t * ac97)
{
      unsigned short val;

      ac97->build_ops = &patch_cm9739_ops;

      /* CM9739/A has no Master and PCM volume although the register reacts */
      ac97->flags |= AC97_HAS_NO_MASTER_VOL | AC97_HAS_NO_PCM_VOL;
      snd_ac97_write_cache(ac97, AC97_MASTER, 0x8000);
      snd_ac97_write_cache(ac97, AC97_PCM, 0x8000);

      /* check spdif */
      val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
      if (val & AC97_EA_SPCV) {
            /* enable spdif in */
            snd_ac97_write_cache(ac97, AC97_CM9739_SPDIF_CTRL,
                             snd_ac97_read(ac97, AC97_CM9739_SPDIF_CTRL) | 0x01);
            ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_48000; /* 48k only */
      } else {
            ac97->ext_id &= ~AC97_EI_SPDIF; /* disable extended-id */
            ac97->rates[AC97_RATES_SPDIF] = 0;
      }

      /* set-up multi channel */
      /* bit 14: 0 = SPDIF, 1 = EAPD */
      /* bit 13: enable internal vref output for mic */
      /* bit 12: disable center/lfe (swithable) */
      /* bit 10: disable surround/line (switchable) */
      /* bit 9: mix 2 surround off */
      /* bit 4: undocumented; 0 mutes the CM9739A, which defaults to 1 */
      /* bit 3: undocumented; surround? */
      /* bit 0: dB */
      val = snd_ac97_read(ac97, AC97_CM9739_MULTI_CHAN) & (1 << 4);
      val |= (1 << 3);
      val |= (1 << 13);
      if (! (ac97->ext_id & AC97_EI_SPDIF))
            val |= (1 << 14);
      snd_ac97_write_cache(ac97, AC97_CM9739_MULTI_CHAN, val);

      /* FIXME: set up GPIO */
      snd_ac97_write_cache(ac97, 0x70, 0x0100);
      snd_ac97_write_cache(ac97, 0x72, 0x0020);

      return 0;
}

#define AC97_CM9761_MULTI_CHAN      0x64
#define AC97_CM9761_SPDIF_CTRL      0x6c

static int snd_ac97_cm9761_linein_rear_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      if (ac97->regs[AC97_CM9739_MULTI_CHAN] & 0x0400)
            ucontrol->value.integer.value[0] = 1;
      else
            ucontrol->value.integer.value[0] = 0;
      return 0;
}

static int snd_ac97_cm9761_linein_rear_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short vals[2][2] = {
            { 0x0008, 0x0400 }, /* off, on */
            { 0x0000, 0x0408 }, /* off, on (9761-82 rev.B) */
      };
      return snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x0408,
                            vals[ac97->spec.dev_flags][!!ucontrol->value.integer.value[0]]);
}

static int snd_ac97_cm9761_center_mic_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      if (ac97->regs[AC97_CM9739_MULTI_CHAN] & 0x1000)
            ucontrol->value.integer.value[0] = 1;
      else
            ucontrol->value.integer.value[0] = 0;
      if (ac97->spec.dev_flags) /* 9761-82 rev.B */
            ucontrol->value.integer.value[0] = !ucontrol->value.integer.value[0];
      return 0;
}

static int snd_ac97_cm9761_center_mic_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
      ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
      unsigned short vals[2][2] = {
            { 0x2000, 0x1880 }, /* off, on */
            { 0x1000, 0x2880 }, /* off, on (9761-82 rev.B) */
      };
      return snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x3880,
                            vals[ac97->spec.dev_flags][!!ucontrol->value.integer.value[0]]);
}

static const snd_kcontrol_new_t snd_ac97_cm9761_controls[] = {
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Line-In As Surround",
            .info = snd_ac97_info_volsw,
            .get = snd_ac97_cm9761_linein_rear_get,
            .put = snd_ac97_cm9761_linein_rear_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = "Mic As Center/LFE",
            .info = snd_ac97_info_volsw,
            .get = snd_ac97_cm9761_center_mic_get,
            .put = snd_ac97_cm9761_center_mic_put,
            .private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
      },
};

static int patch_cm9761_specific(ac97_t * ac97)
{
      return patch_build_controls(ac97, snd_ac97_cm9761_controls, ARRAY_SIZE(snd_ac97_cm9761_controls));
}

static struct snd_ac97_build_ops patch_cm9761_ops = {
      .build_specific   = patch_cm9761_specific,
      .build_post_spdif = patch_cm9739_post_spdif /* hope it's identical... */
};

int patch_cm9761(ac97_t *ac97)
{
      unsigned short val;

      /* CM9761 has no Master and PCM volume although the register reacts */
      ac97->flags |= AC97_HAS_NO_MASTER_VOL | AC97_HAS_NO_PCM_VOL;
      snd_ac97_write_cache(ac97, AC97_MASTER, 0x8000);
      snd_ac97_write_cache(ac97, AC97_PCM, 0x8000);

      ac97->spec.dev_flags = 0; /* 1 = model 82 revision B */
      if (ac97->id == AC97_ID_CM9761_82) {
            unsigned short tmp;
            /* check page 1, reg 0x60 */
            val = snd_ac97_read(ac97, AC97_INT_PAGING);
            snd_ac97_write_cache(ac97, AC97_INT_PAGING, (val & ~0x0f) | 0x01);
            tmp = snd_ac97_read(ac97, 0x60);
            ac97->spec.dev_flags = tmp & 1; /* revision B? */
            snd_ac97_write_cache(ac97, AC97_INT_PAGING, val);
      }

      ac97->build_ops = &patch_cm9761_ops;

      /* enable spdif */
      /* force the SPDIF bit in ext_id - codec doesn't set this bit! */
        ac97->ext_id |= AC97_EI_SPDIF;
      /* to be sure: we overwrite the ext status bits */
      snd_ac97_write_cache(ac97, AC97_EXTENDED_STATUS, 0x05c0);
      snd_ac97_write_cache(ac97, AC97_CM9761_SPDIF_CTRL, 0x0209);
      ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_48000; /* 48k only */

      /* set-up multi channel */
      /* bit 15: pc master beep off
       * bit 14: ??
       * bit 13: vref ctl [= cm9739]
       * bit 12: center/mic [= cm9739] (reverted on rev B)
       * bit 11: ?? (mic/center/lfe) (reverted on rev B)
       * bit 10: suddound/line [= cm9739]
       * bit  9: mix 2 surround
       * bit  8: ?
       * bit  7: ?? (mic/center/lfe)
       * bit  4: ?? (front)
       * bit  3: ?? (line-in/rear share) (revereted with rev B)
       * bit  2: ?? (surround)
       * bit  1: front mic
       * bit  0: mic boost
       */

#if 0
      if (ac97->spec.dev_flags)
            val = 0x0214;
      else
            val = 0x321c;
      snd_ac97_write_cache(ac97, AC97_CM9761_MULTI_CHAN, val);
#endif

      /* FIXME: set up GPIO */
      snd_ac97_write_cache(ac97, 0x70, 0x0100);
      snd_ac97_write_cache(ac97, 0x72, 0x0020);

      return 0;
}
       

/*
 * VIA VT1616 codec
 */
static const snd_kcontrol_new_t snd_ac97_controls_vt1616[] = {
AC97_SINGLE("DC Offset removal", 0x5a, 10, 1, 0),
AC97_SINGLE("Alternate Level to Surround Out", 0x5a, 15, 1, 0),
AC97_SINGLE("Downmix LFE and Center to Front", 0x5a, 12, 1, 0),
AC97_SINGLE("Downmix Surround to Front", 0x5a, 11, 1, 0),
};

static int patch_vt1616_specific(ac97_t * ac97)
{
      int err;

      if (snd_ac97_try_bit(ac97, 0x5a, 9))
            if ((err = patch_build_controls(ac97, &snd_ac97_controls_vt1616[0], 1)) < 0)
                  return err;
      if ((err = patch_build_controls(ac97, &snd_ac97_controls_vt1616[1], ARRAY_SIZE(snd_ac97_controls_vt1616) - 1)) < 0)
            return err;
      return 0;
}

static struct snd_ac97_build_ops patch_vt1616_ops = {
      .build_specific   = patch_vt1616_specific
};

int patch_vt1616(ac97_t * ac97)
{
      ac97->build_ops = &patch_vt1616_ops;
      return 0;
}

static const snd_kcontrol_new_t snd_ac97_controls_it2646[] = {
      AC97_SINGLE("Line-In As Surround", 0x76, 9, 1, 0),
      AC97_SINGLE("Mic As Center/LFE", 0x76, 10, 1, 0),
};

static const snd_kcontrol_new_t snd_ac97_spdif_controls_it2646[] = {
      AC97_SINGLE("IEC958 Capture Switch", 0x76, 11, 1, 0),
      AC97_SINGLE("Analog to IEC958 Output", 0x76, 12, 1, 0),
      AC97_SINGLE("IEC958 Input Monitor", 0x76, 13, 1, 0),
};

static int patch_it2646_specific(ac97_t * ac97)
{
      int err;
      if ((err = patch_build_controls(ac97, snd_ac97_controls_it2646, ARRAY_SIZE(snd_ac97_controls_it2646))) < 0)
            return err;
      if ((err = patch_build_controls(ac97, snd_ac97_spdif_controls_it2646, ARRAY_SIZE(snd_ac97_spdif_controls_it2646))) < 0)
            return err;
      return 0;
}

static struct snd_ac97_build_ops patch_it2646_ops = {
      .build_specific   = patch_it2646_specific
};

int patch_it2646(ac97_t * ac97)
{
      ac97->build_ops = &patch_it2646_ops;
      /* full DAC volume */
      snd_ac97_write_cache(ac97, 0x5E, 0x0808);
      snd_ac97_write_cache(ac97, 0x7A, 0x0808);
      return 0;
}

/* Si3036/8 specific registers */
#define AC97_SI3036_CHIP_ID     0x5a

int mpatch_si3036(ac97_t * ac97)
{
      //printk("mpatch_si3036: chip id = %x\n", snd_ac97_read(ac97, 0x5a));
      snd_ac97_write_cache(ac97, 0x5c, 0xf210 );
      snd_ac97_write_cache(ac97, 0x68, 0);
      return 0;
}

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