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sb_mixer.c

/*
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *  Routines for Sound Blaster mixer control
 *
 *
 *   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 <asm/io.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/control.h>

#undef IO_DEBUG

void snd_sbmixer_write(struct snd_sb *chip, unsigned char reg, unsigned char data)
{
      outb(reg, SBP(chip, MIXER_ADDR));
      udelay(10);
      outb(data, SBP(chip, MIXER_DATA));
      udelay(10);
#ifdef IO_DEBUG
      snd_printk(KERN_DEBUG "mixer_write 0x%x 0x%x\n", reg, data);
#endif
}

unsigned char snd_sbmixer_read(struct snd_sb *chip, unsigned char reg)
{
      unsigned char result;

      outb(reg, SBP(chip, MIXER_ADDR));
      udelay(10);
      result = inb(SBP(chip, MIXER_DATA));
      udelay(10);
#ifdef IO_DEBUG
      snd_printk(KERN_DEBUG "mixer_read 0x%x 0x%x\n", reg, result);
#endif
      return result;
}

/*
 * Single channel mixer element
 */

static int snd_sbmixer_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      int mask = (kcontrol->private_value >> 24) & 0xff;

      uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = 1;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = mask;
      return 0;
}

static int snd_sbmixer_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int reg = kcontrol->private_value & 0xff;
      int shift = (kcontrol->private_value >> 16) & 0xff;
      int mask = (kcontrol->private_value >> 24) & 0xff;
      unsigned char val;

      spin_lock_irqsave(&sb->mixer_lock, flags);
      val = (snd_sbmixer_read(sb, reg) >> shift) & mask;
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      ucontrol->value.integer.value[0] = val;
      return 0;
}

static int snd_sbmixer_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int reg = kcontrol->private_value & 0xff;
      int shift = (kcontrol->private_value >> 16) & 0x07;
      int mask = (kcontrol->private_value >> 24) & 0xff;
      int change;
      unsigned char val, oval;

      val = (ucontrol->value.integer.value[0] & mask) << shift;
      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, reg);
      val = (oval & ~(mask << shift)) | val;
      change = val != oval;
      if (change)
            snd_sbmixer_write(sb, reg, val);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      return change;
}

/*
 * Double channel mixer element
 */

static int snd_sbmixer_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      int mask = (kcontrol->private_value >> 24) & 0xff;

      uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = 2;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = mask;
      return 0;
}

static int snd_sbmixer_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int left_reg = kcontrol->private_value & 0xff;
      int right_reg = (kcontrol->private_value >> 8) & 0xff;
      int left_shift = (kcontrol->private_value >> 16) & 0x07;
      int right_shift = (kcontrol->private_value >> 19) & 0x07;
      int mask = (kcontrol->private_value >> 24) & 0xff;
      unsigned char left, right;

      spin_lock_irqsave(&sb->mixer_lock, flags);
      left = (snd_sbmixer_read(sb, left_reg) >> left_shift) & mask;
      right = (snd_sbmixer_read(sb, right_reg) >> right_shift) & mask;
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      ucontrol->value.integer.value[0] = left;
      ucontrol->value.integer.value[1] = right;
      return 0;
}

static int snd_sbmixer_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int left_reg = kcontrol->private_value & 0xff;
      int right_reg = (kcontrol->private_value >> 8) & 0xff;
      int left_shift = (kcontrol->private_value >> 16) & 0x07;
      int right_shift = (kcontrol->private_value >> 19) & 0x07;
      int mask = (kcontrol->private_value >> 24) & 0xff;
      int change;
      unsigned char left, right, oleft, oright;

      left = (ucontrol->value.integer.value[0] & mask) << left_shift;
      right = (ucontrol->value.integer.value[1] & mask) << right_shift;
      spin_lock_irqsave(&sb->mixer_lock, flags);
      if (left_reg == right_reg) {
            oleft = snd_sbmixer_read(sb, left_reg);
            left = (oleft & ~((mask << left_shift) | (mask << right_shift))) | left | right;
            change = left != oleft;
            if (change)
                  snd_sbmixer_write(sb, left_reg, left);
      } else {
            oleft = snd_sbmixer_read(sb, left_reg);
            oright = snd_sbmixer_read(sb, right_reg);
            left = (oleft & ~(mask << left_shift)) | left;
            right = (oright & ~(mask << right_shift)) | right;
            change = left != oleft || right != oright;
            if (change) {
                  snd_sbmixer_write(sb, left_reg, left);
                  snd_sbmixer_write(sb, right_reg, right);
            }
      }
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      return change;
}

/*
 * DT-019x / ALS-007 capture/input switch
 */

static int snd_dt019x_input_sw_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      static const char *texts[5] = {
            "CD", "Mic", "Line", "Synth", "Master"
      };

      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_dt019x_input_sw_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      unsigned char oval;
      
      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, SB_DT019X_CAPTURE_SW);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      switch (oval & 0x07) {
      case SB_DT019X_CAP_CD:
            ucontrol->value.enumerated.item[0] = 0;
            break;
      case SB_DT019X_CAP_MIC:
            ucontrol->value.enumerated.item[0] = 1;
            break;
      case SB_DT019X_CAP_LINE:
            ucontrol->value.enumerated.item[0] = 2;
            break;
      case SB_DT019X_CAP_MAIN:
            ucontrol->value.enumerated.item[0] = 4;
            break;
      /* To record the synth on these cards you must record the main.   */
      /* Thus SB_DT019X_CAP_SYNTH == SB_DT019X_CAP_MAIN and would cause */
      /* duplicate case labels if left uncommented. */
      /* case SB_DT019X_CAP_SYNTH:
       *    ucontrol->value.enumerated.item[0] = 3;
       *    break;
       */
      default:
            ucontrol->value.enumerated.item[0] = 4;
            break;
      }
      return 0;
}

static int snd_dt019x_input_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int change;
      unsigned char nval, oval;
      
      if (ucontrol->value.enumerated.item[0] > 4)
            return -EINVAL;
      switch (ucontrol->value.enumerated.item[0]) {
      case 0:
            nval = SB_DT019X_CAP_CD;
            break;
      case 1:
            nval = SB_DT019X_CAP_MIC;
            break;
      case 2:
            nval = SB_DT019X_CAP_LINE;
            break;
      case 3:
            nval = SB_DT019X_CAP_SYNTH;
            break;
      case 4:
            nval = SB_DT019X_CAP_MAIN;
            break;
      default:
            nval = SB_DT019X_CAP_MAIN;
      }
      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, SB_DT019X_CAPTURE_SW);
      change = nval != oval;
      if (change)
            snd_sbmixer_write(sb, SB_DT019X_CAPTURE_SW, nval);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      return change;
}

/*
 * ALS4000 mono recording control switch
 */

static int snd_als4k_mono_capture_route_info(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_info *uinfo)
{
      static const char *texts[3] = {
            "L chan only", "R chan only", "L ch/2 + R ch/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_als4k_mono_capture_route_get(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      unsigned char oval;

      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, SB_ALS4000_MONO_IO_CTRL);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      oval >>= 6;
      if (oval > 2)
            oval = 2;

      ucontrol->value.enumerated.item[0] = oval;
      return 0;
}

static int snd_als4k_mono_capture_route_put(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int change;
      unsigned char nval, oval;

      if (ucontrol->value.enumerated.item[0] > 2)
            return -EINVAL;
      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, SB_ALS4000_MONO_IO_CTRL);

      nval = (oval & ~(3 << 6))
           | (ucontrol->value.enumerated.item[0] << 6);
      change = nval != oval;
      if (change)
            snd_sbmixer_write(sb, SB_ALS4000_MONO_IO_CTRL, nval);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      return change;
}

/*
 * SBPRO input multiplexer
 */

static int snd_sb8mixer_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      static const char *texts[3] = {
            "Mic", "CD", "Line"
      };

      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_sb8mixer_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      unsigned char oval;
      
      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, SB_DSP_CAPTURE_SOURCE);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      switch ((oval >> 0x01) & 0x03) {
      case SB_DSP_MIXS_CD:
            ucontrol->value.enumerated.item[0] = 1;
            break;
      case SB_DSP_MIXS_LINE:
            ucontrol->value.enumerated.item[0] = 2;
            break;
      default:
            ucontrol->value.enumerated.item[0] = 0;
            break;
      }
      return 0;
}

static int snd_sb8mixer_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int change;
      unsigned char nval, oval;
      
      if (ucontrol->value.enumerated.item[0] > 2)
            return -EINVAL;
      switch (ucontrol->value.enumerated.item[0]) {
      case 1:
            nval = SB_DSP_MIXS_CD;
            break;
      case 2:
            nval = SB_DSP_MIXS_LINE;
            break;
      default:
            nval = SB_DSP_MIXS_MIC;
      }
      nval <<= 1;
      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval = snd_sbmixer_read(sb, SB_DSP_CAPTURE_SOURCE);
      nval |= oval & ~0x06;
      change = nval != oval;
      if (change)
            snd_sbmixer_write(sb, SB_DSP_CAPTURE_SOURCE, nval);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      return change;
}

/*
 * SB16 input switch
 */

static int snd_sb16mixer_info_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
      uinfo->count = 4;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = 1;
      return 0;
}

static int snd_sb16mixer_get_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int reg1 = kcontrol->private_value & 0xff;
      int reg2 = (kcontrol->private_value >> 8) & 0xff;
      int left_shift = (kcontrol->private_value >> 16) & 0x0f;
      int right_shift = (kcontrol->private_value >> 24) & 0x0f;
      unsigned char val1, val2;

      spin_lock_irqsave(&sb->mixer_lock, flags);
      val1 = snd_sbmixer_read(sb, reg1);
      val2 = snd_sbmixer_read(sb, reg2);
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      ucontrol->value.integer.value[0] = (val1 >> left_shift) & 0x01;
      ucontrol->value.integer.value[1] = (val2 >> left_shift) & 0x01;
      ucontrol->value.integer.value[2] = (val1 >> right_shift) & 0x01;
      ucontrol->value.integer.value[3] = (val2 >> right_shift) & 0x01;
      return 0;
}                                                                                                                   

static int snd_sb16mixer_put_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      struct snd_sb *sb = snd_kcontrol_chip(kcontrol);
      unsigned long flags;
      int reg1 = kcontrol->private_value & 0xff;
      int reg2 = (kcontrol->private_value >> 8) & 0xff;
      int left_shift = (kcontrol->private_value >> 16) & 0x0f;
      int right_shift = (kcontrol->private_value >> 24) & 0x0f;
      int change;
      unsigned char val1, val2, oval1, oval2;

      spin_lock_irqsave(&sb->mixer_lock, flags);
      oval1 = snd_sbmixer_read(sb, reg1);
      oval2 = snd_sbmixer_read(sb, reg2);
      val1 = oval1 & ~((1 << left_shift) | (1 << right_shift));
      val2 = oval2 & ~((1 << left_shift) | (1 << right_shift));
      val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift;
      val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift;
      val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift;
      val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift;
      change = val1 != oval1 || val2 != oval2;
      if (change) {
            snd_sbmixer_write(sb, reg1, val1);
            snd_sbmixer_write(sb, reg2, val2);
      }
      spin_unlock_irqrestore(&sb->mixer_lock, flags);
      return change;
}


/*
 */
/*
 */
int snd_sbmixer_add_ctl(struct snd_sb *chip, const char *name, int index, int type, unsigned long value)
{
      static struct snd_kcontrol_new newctls[] = {
            [SB_MIX_SINGLE] = {
                  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                  .info = snd_sbmixer_info_single,
                  .get = snd_sbmixer_get_single,
                  .put = snd_sbmixer_put_single,
            },
            [SB_MIX_DOUBLE] = {
                  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                  .info = snd_sbmixer_info_double,
                  .get = snd_sbmixer_get_double,
                  .put = snd_sbmixer_put_double,
            },
            [SB_MIX_INPUT_SW] = {
                  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                  .info = snd_sb16mixer_info_input_sw,
                  .get = snd_sb16mixer_get_input_sw,
                  .put = snd_sb16mixer_put_input_sw,
            },
            [SB_MIX_CAPTURE_PRO] = {
                  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                  .info = snd_sb8mixer_info_mux,
                  .get = snd_sb8mixer_get_mux,
                  .put = snd_sb8mixer_put_mux,
            },
            [SB_MIX_CAPTURE_DT019X] = {
                  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                  .info = snd_dt019x_input_sw_info,
                  .get = snd_dt019x_input_sw_get,
                  .put = snd_dt019x_input_sw_put,
            },
            [SB_MIX_MONO_CAPTURE_ALS4K] = {
                  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                  .info = snd_als4k_mono_capture_route_info,
                  .get = snd_als4k_mono_capture_route_get,
                  .put = snd_als4k_mono_capture_route_put,
            },
      };
      struct snd_kcontrol *ctl;
      int err;

      ctl = snd_ctl_new1(&newctls[type], chip);
      if (! ctl)
            return -ENOMEM;
      strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
      ctl->id.index = index;
      ctl->private_value = value;
      if ((err = snd_ctl_add(chip->card, ctl)) < 0)
            return err;
      return 0;
}

/*
 * SB 2.0 specific mixer elements
 */

static struct sbmix_elem snd_sb20_controls[] = {
      SB_SINGLE("Master Playback Volume", SB_DSP20_MASTER_DEV, 1, 7),
      SB_SINGLE("PCM Playback Volume", SB_DSP20_PCM_DEV, 1, 3),
      SB_SINGLE("Synth Playback Volume", SB_DSP20_FM_DEV, 1, 7),
      SB_SINGLE("CD Playback Volume", SB_DSP20_CD_DEV, 1, 7)
};

static unsigned char snd_sb20_init_values[][2] = {
      { SB_DSP20_MASTER_DEV, 0 },
      { SB_DSP20_FM_DEV, 0 },
};

/*
 * SB Pro specific mixer elements
 */
static struct sbmix_elem snd_sbpro_controls[] = {
      SB_DOUBLE("Master Playback Volume",
              SB_DSP_MASTER_DEV, SB_DSP_MASTER_DEV, 5, 1, 7),
      SB_DOUBLE("PCM Playback Volume",
              SB_DSP_PCM_DEV, SB_DSP_PCM_DEV, 5, 1, 7),
      SB_SINGLE("PCM Playback Filter", SB_DSP_PLAYBACK_FILT, 5, 1),
      SB_DOUBLE("Synth Playback Volume",
              SB_DSP_FM_DEV, SB_DSP_FM_DEV, 5, 1, 7),
      SB_DOUBLE("CD Playback Volume", SB_DSP_CD_DEV, SB_DSP_CD_DEV, 5, 1, 7),
      SB_DOUBLE("Line Playback Volume",
              SB_DSP_LINE_DEV, SB_DSP_LINE_DEV, 5, 1, 7),
      SB_SINGLE("Mic Playback Volume", SB_DSP_MIC_DEV, 1, 3),
      {
            .name = "Capture Source",
            .type = SB_MIX_CAPTURE_PRO
      },
      SB_SINGLE("Capture Filter", SB_DSP_CAPTURE_FILT, 5, 1),
      SB_SINGLE("Capture Low-Pass Filter", SB_DSP_CAPTURE_FILT, 3, 1)
};

static unsigned char snd_sbpro_init_values[][2] = {
      { SB_DSP_MASTER_DEV, 0 },
      { SB_DSP_PCM_DEV, 0 },
      { SB_DSP_FM_DEV, 0 },
};

/*
 * SB16 specific mixer elements
 */
static struct sbmix_elem snd_sb16_controls[] = {
      SB_DOUBLE("Master Playback Volume",
              SB_DSP4_MASTER_DEV, (SB_DSP4_MASTER_DEV + 1), 3, 3, 31),
      SB_DOUBLE("PCM Playback Volume",
              SB_DSP4_PCM_DEV, (SB_DSP4_PCM_DEV + 1), 3, 3, 31),
      SB16_INPUT_SW("Synth Capture Route",
                  SB_DSP4_INPUT_LEFT, SB_DSP4_INPUT_RIGHT, 6, 5),
      SB_DOUBLE("Synth Playback Volume",
              SB_DSP4_SYNTH_DEV, (SB_DSP4_SYNTH_DEV + 1), 3, 3, 31),
      SB16_INPUT_SW("CD Capture Route",
                  SB_DSP4_INPUT_LEFT, SB_DSP4_INPUT_RIGHT, 2, 1),
      SB_DOUBLE("CD Playback Switch",
              SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 2, 1, 1),
      SB_DOUBLE("CD Playback Volume",
              SB_DSP4_CD_DEV, (SB_DSP4_CD_DEV + 1), 3, 3, 31),
      SB16_INPUT_SW("Mic Capture Route",
                  SB_DSP4_INPUT_LEFT, SB_DSP4_INPUT_RIGHT, 0, 0),
      SB_SINGLE("Mic Playback Switch", SB_DSP4_OUTPUT_SW, 0, 1),
      SB_SINGLE("Mic Playback Volume", SB_DSP4_MIC_DEV, 3, 31),
      SB_SINGLE("Beep Volume", SB_DSP4_SPEAKER_DEV, 6, 3),
      SB_DOUBLE("Capture Volume",
              SB_DSP4_IGAIN_DEV, (SB_DSP4_IGAIN_DEV + 1), 6, 6, 3),
      SB_DOUBLE("Playback Volume",
              SB_DSP4_OGAIN_DEV, (SB_DSP4_OGAIN_DEV + 1), 6, 6, 3),
      SB16_INPUT_SW("Line Capture Route",
                  SB_DSP4_INPUT_LEFT, SB_DSP4_INPUT_RIGHT, 4, 3),
      SB_DOUBLE("Line Playback Switch",
              SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 4, 3, 1),
      SB_DOUBLE("Line Playback Volume",
              SB_DSP4_LINE_DEV, (SB_DSP4_LINE_DEV + 1), 3, 3, 31),
      SB_SINGLE("Mic Auto Gain", SB_DSP4_MIC_AGC, 0, 1),
      SB_SINGLE("3D Enhancement Switch", SB_DSP4_3DSE, 0, 1),
      SB_DOUBLE("Tone Control - Bass",
              SB_DSP4_BASS_DEV, (SB_DSP4_BASS_DEV + 1), 4, 4, 15),
      SB_DOUBLE("Tone Control - Treble",
              SB_DSP4_TREBLE_DEV, (SB_DSP4_TREBLE_DEV + 1), 4, 4, 15)
};

static unsigned char snd_sb16_init_values[][2] = {
      { SB_DSP4_MASTER_DEV + 0, 0 },
      { SB_DSP4_MASTER_DEV + 1, 0 },
      { SB_DSP4_PCM_DEV + 0, 0 },
      { SB_DSP4_PCM_DEV + 1, 0 },
      { SB_DSP4_SYNTH_DEV + 0, 0 },
      { SB_DSP4_SYNTH_DEV + 1, 0 },
      { SB_DSP4_INPUT_LEFT, 0 },
      { SB_DSP4_INPUT_RIGHT, 0 },
      { SB_DSP4_OUTPUT_SW, 0 },
      { SB_DSP4_SPEAKER_DEV, 0 },
};

/*
 * DT019x specific mixer elements
 */
static struct sbmix_elem snd_dt019x_controls[] = {
      /* ALS4000 below has some parts which we might be lacking,
       * e.g. snd_als4000_ctl_mono_playback_switch - check it! */
      SB_DOUBLE("Master Playback Volume",
              SB_DT019X_MASTER_DEV, SB_DT019X_MASTER_DEV, 4, 0, 15),
      SB_DOUBLE("PCM Playback Switch",
              SB_DT019X_OUTPUT_SW2, SB_DT019X_OUTPUT_SW2, 2, 1, 1),
      SB_DOUBLE("PCM Playback Volume",
              SB_DT019X_PCM_DEV, SB_DT019X_PCM_DEV, 4, 0, 15),
      SB_DOUBLE("Synth Playback Switch",
              SB_DT019X_OUTPUT_SW2, SB_DT019X_OUTPUT_SW2, 4, 3, 1),
      SB_DOUBLE("Synth Playback Volume",
              SB_DT019X_SYNTH_DEV, SB_DT019X_SYNTH_DEV, 4, 0, 15),
      SB_DOUBLE("CD Playback Switch",
              SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 2, 1, 1),
      SB_DOUBLE("CD Playback Volume",
              SB_DT019X_CD_DEV, SB_DT019X_CD_DEV, 4, 0, 15),
      SB_SINGLE("Mic Playback Switch", SB_DSP4_OUTPUT_SW, 0, 1),
      SB_SINGLE("Mic Playback Volume", SB_DT019X_MIC_DEV, 4, 7),
      SB_SINGLE("Beep Volume", SB_DT019X_SPKR_DEV, 0,  7),
      SB_DOUBLE("Line Playback Switch",
              SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 4, 3, 1),
      SB_DOUBLE("Line Playback Volume",
              SB_DT019X_LINE_DEV, SB_DT019X_LINE_DEV, 4, 0, 15),
      {
            .name = "Capture Source",
            .type = SB_MIX_CAPTURE_DT019X
      }
};

static unsigned char snd_dt019x_init_values[][2] = {
        { SB_DT019X_MASTER_DEV, 0 },
        { SB_DT019X_PCM_DEV, 0 },
        { SB_DT019X_SYNTH_DEV, 0 },
        { SB_DT019X_CD_DEV, 0 },
        { SB_DT019X_MIC_DEV, 0 },   /* Includes PC-speaker in high nibble */
        { SB_DT019X_LINE_DEV, 0 },
        { SB_DSP4_OUTPUT_SW, 0 },
        { SB_DT019X_OUTPUT_SW2, 0 },
        { SB_DT019X_CAPTURE_SW, 0x06 },
};

/*
 * ALS4000 specific mixer elements
 */
static struct sbmix_elem snd_als4000_controls[] = {
      SB_DOUBLE("PCM Playback Switch",
              SB_DT019X_OUTPUT_SW2, SB_DT019X_OUTPUT_SW2, 2, 1, 1),
      SB_DOUBLE("Synth Playback Switch",
              SB_DT019X_OUTPUT_SW2, SB_DT019X_OUTPUT_SW2, 4, 3, 1),
      SB_SINGLE("Mic Boost (+20dB)", SB_ALS4000_MIC_IN_GAIN, 0, 0x03),
      SB_SINGLE("Master Mono Playback Switch", SB_ALS4000_MONO_IO_CTRL, 5, 1),
      {
            .name = "Master Mono Capture Route",
            .type = SB_MIX_MONO_CAPTURE_ALS4K
      },
      SB_SINGLE("Mono Playback Switch", SB_DT019X_OUTPUT_SW2, 0, 1),
      SB_SINGLE("Analog Loopback Switch", SB_ALS4000_MIC_IN_GAIN, 7, 0x01),
      SB_SINGLE("3D Control - Switch", SB_ALS4000_3D_SND_FX, 6, 0x01),
      SB_SINGLE("Digital Loopback Switch",
              SB_ALS4000_CR3_CONFIGURATION, 7, 0x01),
      /* FIXME: functionality of 3D controls might be swapped, I didn't find
       * a description of how to identify what is supposed to be what */
      SB_SINGLE("3D Control - Level", SB_ALS4000_3D_SND_FX, 0, 0x07),
      /* FIXME: maybe there's actually some standard 3D ctrl name for it?? */
      SB_SINGLE("3D Control - Freq", SB_ALS4000_3D_SND_FX, 4, 0x03),
      /* FIXME: ALS4000a.pdf mentions BBD (Bucket Brigade Device) time delay,
       * but what ALSA 3D attribute is that actually? "Center", "Depth",
       * "Wide" or "Space" or even "Level"? Assuming "Wide" for now... */
      SB_SINGLE("3D Control - Wide", SB_ALS4000_3D_TIME_DELAY, 0, 0x0f),
      SB_SINGLE("3D PowerOff Switch", SB_ALS4000_3D_TIME_DELAY, 4, 0x01),
      SB_SINGLE("Master Playback 8kHz / 20kHz LPF Switch",
              SB_ALS4000_FMDAC, 5, 0x01),
#ifdef NOT_AVAILABLE
      SB_SINGLE("FMDAC Switch (Option ?)", SB_ALS4000_FMDAC, 0, 0x01),
      SB_SINGLE("QSound Mode", SB_ALS4000_QSOUND, 1, 0x1f),
#endif
};

static unsigned char snd_als4000_init_values[][2] = {
      { SB_DSP4_MASTER_DEV + 0, 0 },
      { SB_DSP4_MASTER_DEV + 1, 0 },
      { SB_DSP4_PCM_DEV + 0, 0 },
      { SB_DSP4_PCM_DEV + 1, 0 },
      { SB_DSP4_SYNTH_DEV + 0, 0 },
      { SB_DSP4_SYNTH_DEV + 1, 0 },
      { SB_DSP4_SPEAKER_DEV, 0 },
      { SB_DSP4_OUTPUT_SW, 0 },
      { SB_DSP4_INPUT_LEFT, 0 },
      { SB_DSP4_INPUT_RIGHT, 0 },
      { SB_DT019X_OUTPUT_SW2, 0 },
      { SB_ALS4000_MIC_IN_GAIN, 0 },
};

/*
 */
static int snd_sbmixer_init(struct snd_sb *chip,
                      struct sbmix_elem *controls,
                      int controls_count,
                      unsigned char map[][2],
                      int map_count,
                      char *name)
{
      unsigned long flags;
      struct snd_card *card = chip->card;
      int idx, err;

      /* mixer reset */
      spin_lock_irqsave(&chip->mixer_lock, flags);
      snd_sbmixer_write(chip, 0x00, 0x00);
      spin_unlock_irqrestore(&chip->mixer_lock, flags);

      /* mute and zero volume channels */
      for (idx = 0; idx < map_count; idx++) {
            spin_lock_irqsave(&chip->mixer_lock, flags);
            snd_sbmixer_write(chip, map[idx][0], map[idx][1]);
            spin_unlock_irqrestore(&chip->mixer_lock, flags);
      }

      for (idx = 0; idx < controls_count; idx++) {
            err = snd_sbmixer_add_ctl_elem(chip, &controls[idx]);
            if (err < 0)
                  return err;
      }
      snd_component_add(card, name);
      strcpy(card->mixername, name);
      return 0;
}

int snd_sbmixer_new(struct snd_sb *chip)
{
      struct snd_card *card;
      int err;

      if (snd_BUG_ON(!chip || !chip->card))
            return -EINVAL;

      card = chip->card;

      switch (chip->hardware) {
      case SB_HW_10:
            return 0; /* no mixer chip on SB1.x */
      case SB_HW_20:
      case SB_HW_201:
            if ((err = snd_sbmixer_init(chip,
                                  snd_sb20_controls,
                                  ARRAY_SIZE(snd_sb20_controls),
                                  snd_sb20_init_values,
                                  ARRAY_SIZE(snd_sb20_init_values),
                                  "CTL1335")) < 0)
                  return err;
            break;
      case SB_HW_PRO:
      case SB_HW_JAZZ16:
            if ((err = snd_sbmixer_init(chip,
                                  snd_sbpro_controls,
                                  ARRAY_SIZE(snd_sbpro_controls),
                                  snd_sbpro_init_values,
                                  ARRAY_SIZE(snd_sbpro_init_values),
                                  "CTL1345")) < 0)
                  return err;
            break;
      case SB_HW_16:
      case SB_HW_ALS100:
      case SB_HW_CS5530:
            if ((err = snd_sbmixer_init(chip,
                                  snd_sb16_controls,
                                  ARRAY_SIZE(snd_sb16_controls),
                                  snd_sb16_init_values,
                                  ARRAY_SIZE(snd_sb16_init_values),
                                  "CTL1745")) < 0)
                  return err;
            break;
      case SB_HW_ALS4000:
            /* use only the first 16 controls from SB16 */
            err = snd_sbmixer_init(chip,
                              snd_sb16_controls,
                              16,
                              snd_sb16_init_values,
                              ARRAY_SIZE(snd_sb16_init_values),
                              "ALS4000");
            if (err < 0)
                  return err;
            if ((err = snd_sbmixer_init(chip,
                                  snd_als4000_controls,
                                  ARRAY_SIZE(snd_als4000_controls),
                                  snd_als4000_init_values,
                                  ARRAY_SIZE(snd_als4000_init_values),
                                  "ALS4000")) < 0)
                  return err;
            break;
      case SB_HW_DT019X:
            if ((err = snd_sbmixer_init(chip,
                                  snd_dt019x_controls,
                                  ARRAY_SIZE(snd_dt019x_controls),
                                  snd_dt019x_init_values,
                                  ARRAY_SIZE(snd_dt019x_init_values),
                                  "DT019X")) < 0)
            break;
      default:
            strcpy(card->mixername, "???");
      }
      return 0;
}

#ifdef CONFIG_PM
static unsigned char sb20_saved_regs[] = {
      SB_DSP20_MASTER_DEV,
      SB_DSP20_PCM_DEV,
      SB_DSP20_FM_DEV,
      SB_DSP20_CD_DEV,
};

static unsigned char sbpro_saved_regs[] = {
      SB_DSP_MASTER_DEV,
      SB_DSP_PCM_DEV,
      SB_DSP_PLAYBACK_FILT,
      SB_DSP_FM_DEV,
      SB_DSP_CD_DEV,
      SB_DSP_LINE_DEV,
      SB_DSP_MIC_DEV,
      SB_DSP_CAPTURE_SOURCE,
      SB_DSP_CAPTURE_FILT,
};

static unsigned char sb16_saved_regs[] = {
      SB_DSP4_MASTER_DEV, SB_DSP4_MASTER_DEV + 1,
      SB_DSP4_3DSE,
      SB_DSP4_BASS_DEV, SB_DSP4_BASS_DEV + 1,
      SB_DSP4_TREBLE_DEV, SB_DSP4_TREBLE_DEV + 1,
      SB_DSP4_PCM_DEV, SB_DSP4_PCM_DEV + 1,
      SB_DSP4_INPUT_LEFT, SB_DSP4_INPUT_RIGHT,
      SB_DSP4_SYNTH_DEV, SB_DSP4_SYNTH_DEV + 1,
      SB_DSP4_OUTPUT_SW,
      SB_DSP4_CD_DEV, SB_DSP4_CD_DEV + 1,
      SB_DSP4_LINE_DEV, SB_DSP4_LINE_DEV + 1,
      SB_DSP4_MIC_DEV,
      SB_DSP4_SPEAKER_DEV,
      SB_DSP4_IGAIN_DEV, SB_DSP4_IGAIN_DEV + 1,
      SB_DSP4_OGAIN_DEV, SB_DSP4_OGAIN_DEV + 1,
      SB_DSP4_MIC_AGC
};

static unsigned char dt019x_saved_regs[] = {
      SB_DT019X_MASTER_DEV,
      SB_DT019X_PCM_DEV,
      SB_DT019X_SYNTH_DEV,
      SB_DT019X_CD_DEV,
      SB_DT019X_MIC_DEV,
      SB_DT019X_SPKR_DEV,
      SB_DT019X_LINE_DEV,
      SB_DSP4_OUTPUT_SW,
      SB_DT019X_OUTPUT_SW2,
      SB_DT019X_CAPTURE_SW,
};

static unsigned char als4000_saved_regs[] = {
      /* please verify in dsheet whether regs to be added
         are actually real H/W or just dummy */
      SB_DSP4_MASTER_DEV, SB_DSP4_MASTER_DEV + 1,
      SB_DSP4_OUTPUT_SW,
      SB_DSP4_PCM_DEV, SB_DSP4_PCM_DEV + 1,
      SB_DSP4_INPUT_LEFT, SB_DSP4_INPUT_RIGHT,
      SB_DSP4_SYNTH_DEV, SB_DSP4_SYNTH_DEV + 1,
      SB_DSP4_CD_DEV, SB_DSP4_CD_DEV + 1,
      SB_DSP4_MIC_DEV,
      SB_DSP4_SPEAKER_DEV,
      SB_DSP4_IGAIN_DEV, SB_DSP4_IGAIN_DEV + 1,
      SB_DSP4_OGAIN_DEV, SB_DSP4_OGAIN_DEV + 1,
      SB_DT019X_OUTPUT_SW2,
      SB_ALS4000_MONO_IO_CTRL,
      SB_ALS4000_MIC_IN_GAIN,
      SB_ALS4000_FMDAC,
      SB_ALS4000_3D_SND_FX,
      SB_ALS4000_3D_TIME_DELAY,
      SB_ALS4000_CR3_CONFIGURATION,
};

static void save_mixer(struct snd_sb *chip, unsigned char *regs, int num_regs)
{
      unsigned char *val = chip->saved_regs;
      if (snd_BUG_ON(num_regs > ARRAY_SIZE(chip->saved_regs)))
            return;
      for (; num_regs; num_regs--)
            *val++ = snd_sbmixer_read(chip, *regs++);
}

static void restore_mixer(struct snd_sb *chip, unsigned char *regs, int num_regs)
{
      unsigned char *val = chip->saved_regs;
      if (snd_BUG_ON(num_regs > ARRAY_SIZE(chip->saved_regs)))
            return;
      for (; num_regs; num_regs--)
            snd_sbmixer_write(chip, *regs++, *val++);
}

void snd_sbmixer_suspend(struct snd_sb *chip)
{
      switch (chip->hardware) {
      case SB_HW_20:
      case SB_HW_201:
            save_mixer(chip, sb20_saved_regs, ARRAY_SIZE(sb20_saved_regs));
            break;
      case SB_HW_PRO:
      case SB_HW_JAZZ16:
            save_mixer(chip, sbpro_saved_regs, ARRAY_SIZE(sbpro_saved_regs));
            break;
      case SB_HW_16:
      case SB_HW_ALS100:
      case SB_HW_CS5530:
            save_mixer(chip, sb16_saved_regs, ARRAY_SIZE(sb16_saved_regs));
            break;
      case SB_HW_ALS4000:
            save_mixer(chip, als4000_saved_regs, ARRAY_SIZE(als4000_saved_regs));
            break;
      case SB_HW_DT019X:
            save_mixer(chip, dt019x_saved_regs, ARRAY_SIZE(dt019x_saved_regs));
            break;
      default:
            break;
      }
}

void snd_sbmixer_resume(struct snd_sb *chip)
{
      switch (chip->hardware) {
      case SB_HW_20:
      case SB_HW_201:
            restore_mixer(chip, sb20_saved_regs, ARRAY_SIZE(sb20_saved_regs));
            break;
      case SB_HW_PRO:
      case SB_HW_JAZZ16:
            restore_mixer(chip, sbpro_saved_regs, ARRAY_SIZE(sbpro_saved_regs));
            break;
      case SB_HW_16:
      case SB_HW_ALS100:
      case SB_HW_CS5530:
            restore_mixer(chip, sb16_saved_regs, ARRAY_SIZE(sb16_saved_regs));
            break;
      case SB_HW_ALS4000:
            restore_mixer(chip, als4000_saved_regs, ARRAY_SIZE(als4000_saved_regs));
            break;
      case SB_HW_DT019X:
            restore_mixer(chip, dt019x_saved_regs, ARRAY_SIZE(dt019x_saved_regs));
            break;
      default:
            break;
      }
}
#endif

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