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au88x0_eq.c

/***************************************************************************
 *            au88x0_eq.c
 *  Aureal Vortex Hardware EQ control/access.
 *
 *  Sun Jun  8 18:19:19 2003
 *  2003  Manuel Jander (mjander@users.sourceforge.net)
 *  
 *  02 July 2003: First time something works :)
 *  November 2003: A3D Bypass code completed but untested.
 *
 *  TODO:
 *     - Debug (testing)
 *     - Test peak visualization support.
 *
 ****************************************************************************/

/*
 *  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 Library 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.
 */

/*
 The Aureal Hardware EQ is found on AU8810 and AU8830 chips only.
 it has 4 inputs (2 for general mix, 2 for A3D) and 2 outputs (supposed 
 to be routed to the codec).
*/

#include "au88x0.h"
#include "au88x0_eq.h"
#include "au88x0_eqdata.c"

#define VORTEX_EQ_BASE   0x2b000
#define VORTEX_EQ_DEST   (VORTEX_EQ_BASE + 0x410)
#define VORTEX_EQ_SOURCE (VORTEX_EQ_BASE + 0x430)
#define VORTEX_EQ_CTRL   (VORTEX_EQ_BASE + 0x440)

#define VORTEX_BAND_COEFF_SIZE 0x30

/* CEqHw.s */
static void vortex_EqHw_SetTimeConsts(vortex_t * vortex, u16 gain, u16 level)
{
      hwwrite(vortex->mmio, 0x2b3c4, gain);
      hwwrite(vortex->mmio, 0x2b3c8, level);
}

static inline u16 sign_invert(u16 a)
{
      /* -(-32768) -> -32768 so we do -(-32768) -> 32767 to make the result positive */
      if (a == (u16)-32768)
            return 32767;
      else
            return -a;
}

static void vortex_EqHw_SetLeftCoefs(vortex_t * vortex, u16 coefs[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int i = 0, n /*esp2c */;

      for (n = 0; n < eqhw->this04; n++) {
            hwwrite(vortex->mmio, 0x2b000 + n * 0x30, coefs[i + 0]);
            hwwrite(vortex->mmio, 0x2b004 + n * 0x30, coefs[i + 1]);

            if (eqhw->this08 == 0) {
                  hwwrite(vortex->mmio, 0x2b008 + n * 0x30, coefs[i + 2]);
                  hwwrite(vortex->mmio, 0x2b00c + n * 0x30, coefs[i + 3]);
                  hwwrite(vortex->mmio, 0x2b010 + n * 0x30, coefs[i + 4]);
            } else {
                  hwwrite(vortex->mmio, 0x2b008 + n * 0x30, sign_invert(coefs[2 + i]));
                  hwwrite(vortex->mmio, 0x2b00c + n * 0x30, sign_invert(coefs[3 + i]));
                    hwwrite(vortex->mmio, 0x2b010 + n * 0x30, sign_invert(coefs[4 + i]));
            }
            i += 5;
      }
}

static void vortex_EqHw_SetRightCoefs(vortex_t * vortex, u16 coefs[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int i = 0, n /*esp2c */;

      for (n = 0; n < eqhw->this04; n++) {
            hwwrite(vortex->mmio, 0x2b1e0 + n * 0x30, coefs[0 + i]);
            hwwrite(vortex->mmio, 0x2b1e4 + n * 0x30, coefs[1 + i]);

            if (eqhw->this08 == 0) {
                  hwwrite(vortex->mmio, 0x2b1e8 + n * 0x30, coefs[2 + i]);
                  hwwrite(vortex->mmio, 0x2b1ec + n * 0x30, coefs[3 + i]);
                  hwwrite(vortex->mmio, 0x2b1f0 + n * 0x30, coefs[4 + i]);
            } else {
                  hwwrite(vortex->mmio, 0x2b1e8 + n * 0x30, sign_invert(coefs[2 + i]));
                  hwwrite(vortex->mmio, 0x2b1ec + n * 0x30, sign_invert(coefs[3 + i]));
                  hwwrite(vortex->mmio, 0x2b1f0 + n * 0x30, sign_invert(coefs[4 + i]));
            }
            i += 5;
      }

}

static void vortex_EqHw_SetLeftStates(vortex_t * vortex, u16 a[], u16 b[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int i = 0, ebx;

      hwwrite(vortex->mmio, 0x2b3fc, a[0]);
      hwwrite(vortex->mmio, 0x2b400, a[1]);

      for (ebx = 0; ebx < eqhw->this04; ebx++) {
            hwwrite(vortex->mmio, 0x2b014 + (i * 0xc), b[i]);
            hwwrite(vortex->mmio, 0x2b018 + (i * 0xc), b[1 + i]);
            hwwrite(vortex->mmio, 0x2b01c + (i * 0xc), b[2 + i]);
            hwwrite(vortex->mmio, 0x2b020 + (i * 0xc), b[3 + i]);
            i += 4;
      }
}

static void vortex_EqHw_SetRightStates(vortex_t * vortex, u16 a[], u16 b[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int i = 0, ebx;

      hwwrite(vortex->mmio, 0x2b404, a[0]);
      hwwrite(vortex->mmio, 0x2b408, a[1]);

      for (ebx = 0; ebx < eqhw->this04; ebx++) {
            hwwrite(vortex->mmio, 0x2b1f4 + (i * 0xc), b[i]);
            hwwrite(vortex->mmio, 0x2b1f8 + (i * 0xc), b[1 + i]);
            hwwrite(vortex->mmio, 0x2b1fc + (i * 0xc), b[2 + i]);
            hwwrite(vortex->mmio, 0x2b200 + (i * 0xc), b[3 + i]);
            i += 4;
      }
}

#if 0
static void vortex_EqHw_GetTimeConsts(vortex_t * vortex, u16 * a, u16 * b)
{
      *a = hwread(vortex->mmio, 0x2b3c4);
      *b = hwread(vortex->mmio, 0x2b3c8);
}

static void vortex_EqHw_GetLeftCoefs(vortex_t * vortex, u16 a[])
{

}

static void vortex_EqHw_GetRightCoefs(vortex_t * vortex, u16 a[])
{

}

static void vortex_EqHw_GetLeftStates(vortex_t * vortex, u16 * a, u16 b[])
{

}

static void vortex_EqHw_GetRightStates(vortex_t * vortex, u16 * a, u16 b[])
{

}

#endif
/* Mix Gains */
static void vortex_EqHw_SetBypassGain(vortex_t * vortex, u16 a, u16 b)
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      if (eqhw->this08 == 0) {
            hwwrite(vortex->mmio, 0x2b3d4, a);
            hwwrite(vortex->mmio, 0x2b3ec, b);
      } else {
            hwwrite(vortex->mmio, 0x2b3d4, sign_invert(a));
            hwwrite(vortex->mmio, 0x2b3ec, sign_invert(b));
      }
}

static void vortex_EqHw_SetA3DBypassGain(vortex_t * vortex, u16 a, u16 b)
{

      hwwrite(vortex->mmio, 0x2b3e0, a);
      hwwrite(vortex->mmio, 0x2b3f8, b);
}

#if 0
static void vortex_EqHw_SetCurrBypassGain(vortex_t * vortex, u16 a, u16 b)
{

      hwwrite(vortex->mmio, 0x2b3d0, a);
      hwwrite(vortex->mmio, 0x2b3e8, b);
}

static void vortex_EqHw_SetCurrA3DBypassGain(vortex_t * vortex, u16 a, u16 b)
{

      hwwrite(vortex->mmio, 0x2b3dc, a);
      hwwrite(vortex->mmio, 0x2b3f4, b);
}

#endif
static void
vortex_EqHw_SetLeftGainsSingleTarget(vortex_t * vortex, u16 index, u16 b)
{
      hwwrite(vortex->mmio, 0x2b02c + (index * 0x30), b);
}

static void
vortex_EqHw_SetRightGainsSingleTarget(vortex_t * vortex, u16 index, u16 b)
{
      hwwrite(vortex->mmio, 0x2b20c + (index * 0x30), b);
}

static void vortex_EqHw_SetLeftGainsTarget(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx;

      for (ebx = 0; ebx < eqhw->this04; ebx++) {
            hwwrite(vortex->mmio, 0x2b02c + ebx * 0x30, a[ebx]);
      }
}

static void vortex_EqHw_SetRightGainsTarget(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx;

      for (ebx = 0; ebx < eqhw->this04; ebx++) {
            hwwrite(vortex->mmio, 0x2b20c + ebx * 0x30, a[ebx]);
      }
}

static void vortex_EqHw_SetLeftGainsCurrent(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx;

      for (ebx = 0; ebx < eqhw->this04; ebx++) {
            hwwrite(vortex->mmio, 0x2b028 + ebx * 0x30, a[ebx]);
      }
}

static void vortex_EqHw_SetRightGainsCurrent(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx;

      for (ebx = 0; ebx < eqhw->this04; ebx++) {
            hwwrite(vortex->mmio, 0x2b208 + ebx * 0x30, a[ebx]);
      }
}

#if 0
static void vortex_EqHw_GetLeftGainsTarget(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx = 0;

      if (eqhw->this04 < 0)
            return;

      do {
            a[ebx] = hwread(vortex->mmio, 0x2b02c + ebx * 0x30);
            ebx++;
      }
      while (ebx < eqhw->this04);
}

static void vortex_EqHw_GetRightGainsTarget(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx = 0;

      if (eqhw->this04 < 0)
            return;

      do {
            a[ebx] = hwread(vortex->mmio, 0x2b20c + ebx * 0x30);
            ebx++;
      }
      while (ebx < eqhw->this04);
}

static void vortex_EqHw_GetLeftGainsCurrent(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx = 0;

      if (eqhw->this04 < 0)
            return;

      do {
            a[ebx] = hwread(vortex->mmio, 0x2b028 + ebx * 0x30);
            ebx++;
      }
      while (ebx < eqhw->this04);
}

static void vortex_EqHw_GetRightGainsCurrent(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx = 0;

      if (eqhw->this04 < 0)
            return;

      do {
            a[ebx] = hwread(vortex->mmio, 0x2b208 + ebx * 0x30);
            ebx++;
      }
      while (ebx < eqhw->this04);
}

#endif
/* EQ band levels settings */
static void vortex_EqHw_SetLevels(vortex_t * vortex, u16 peaks[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int i;

      /* set left peaks */
      for (i = 0; i < eqhw->this04; i++) {
            hwwrite(vortex->mmio, 0x2b024 + i * VORTEX_BAND_COEFF_SIZE, peaks[i]);
      }

      hwwrite(vortex->mmio, 0x2b3cc, peaks[eqhw->this04]);
      hwwrite(vortex->mmio, 0x2b3d8, peaks[eqhw->this04 + 1]);

      /* set right peaks */
      for (i = 0; i < eqhw->this04; i++) {
            hwwrite(vortex->mmio, 0x2b204 + i * VORTEX_BAND_COEFF_SIZE,
                  peaks[i + (eqhw->this04 + 2)]);
      }

      hwwrite(vortex->mmio, 0x2b3e4, peaks[2 + (eqhw->this04 * 2)]);
      hwwrite(vortex->mmio, 0x2b3f0, peaks[3 + (eqhw->this04 * 2)]);
}

#if 0
static void vortex_EqHw_GetLevels(vortex_t * vortex, u16 a[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int ebx;

      if (eqhw->this04 < 0)
            return;

      ebx = 0;
      do {
            a[ebx] = hwread(vortex->mmio, 0x2b024 + ebx * 0x30);
            ebx++;
      }
      while (ebx < eqhw->this04);

      a[eqhw->this04] = hwread(vortex->mmio, 0x2b3cc);
      a[eqhw->this04 + 1] = hwread(vortex->mmio, 0x2b3d8);

      ebx = 0;
      do {
            a[ebx + (eqhw->this04 + 2)] =
                hwread(vortex->mmio, 0x2b204 + ebx * 0x30);
            ebx++;
      }
      while (ebx < eqhw->this04);

      a[2 + (eqhw->this04 * 2)] = hwread(vortex->mmio, 0x2b3e4);
      a[3 + (eqhw->this04 * 2)] = hwread(vortex->mmio, 0x2b3f0);
}

#endif
/* Global Control */
static void vortex_EqHw_SetControlReg(vortex_t * vortex, u32 reg)
{
      hwwrite(vortex->mmio, 0x2b440, reg);
}

static void vortex_EqHw_SetSampleRate(vortex_t * vortex, u32 sr)
{
      hwwrite(vortex->mmio, 0x2b440, ((sr & 0x1f) << 3) | 0xb800);
}

#if 0
static void vortex_EqHw_GetControlReg(vortex_t * vortex, u32 *reg)
{
      *reg = hwread(vortex->mmio, 0x2b440);
}

static void vortex_EqHw_GetSampleRate(vortex_t * vortex, u32 *sr)
{
      *sr = (hwread(vortex->mmio, 0x2b440) >> 3) & 0x1f;
}

#endif
static void vortex_EqHw_Enable(vortex_t * vortex)
{
      hwwrite(vortex->mmio, VORTEX_EQ_CTRL, 0xf001);
}

static void vortex_EqHw_Disable(vortex_t * vortex)
{
      hwwrite(vortex->mmio, VORTEX_EQ_CTRL, 0xf000);
}

/* Reset (zero) buffers */
static void vortex_EqHw_ZeroIO(vortex_t * vortex)
{
      int i;
      for (i = 0; i < 0x8; i++)
            hwwrite(vortex->mmio, VORTEX_EQ_DEST + (i << 2), 0x0);
      for (i = 0; i < 0x4; i++)
            hwwrite(vortex->mmio, VORTEX_EQ_SOURCE + (i << 2), 0x0);
}

static void vortex_EqHw_ZeroA3DIO(vortex_t * vortex)
{
      int i;
      for (i = 0; i < 0x4; i++)
            hwwrite(vortex->mmio, VORTEX_EQ_DEST + (i << 2), 0x0);
}

static void vortex_EqHw_ZeroState(vortex_t * vortex)
{

      vortex_EqHw_SetControlReg(vortex, 0);
      vortex_EqHw_ZeroIO(vortex);
      hwwrite(vortex->mmio, 0x2b3c0, 0);

      vortex_EqHw_SetTimeConsts(vortex, 0, 0);

      vortex_EqHw_SetLeftCoefs(vortex, asEqCoefsZeros);
      vortex_EqHw_SetRightCoefs(vortex, asEqCoefsZeros);

      vortex_EqHw_SetLeftGainsCurrent(vortex, eq_gains_zero);
      vortex_EqHw_SetRightGainsCurrent(vortex, eq_gains_zero);
      vortex_EqHw_SetLeftGainsTarget(vortex, eq_gains_zero);
      vortex_EqHw_SetRightGainsTarget(vortex, eq_gains_zero);

      vortex_EqHw_SetBypassGain(vortex, 0, 0);
      //vortex_EqHw_SetCurrBypassGain(vortex, 0, 0);
      vortex_EqHw_SetA3DBypassGain(vortex, 0, 0);
      //vortex_EqHw_SetCurrA3DBypassGain(vortex, 0, 0);
      vortex_EqHw_SetLeftStates(vortex, eq_states_zero, asEqOutStateZeros);
      vortex_EqHw_SetRightStates(vortex, eq_states_zero, asEqOutStateZeros);
      vortex_EqHw_SetLevels(vortex, (u16 *) eq_levels);
}

/* Program coeficients as pass through */
static void vortex_EqHw_ProgramPipe(vortex_t * vortex)
{
      vortex_EqHw_SetTimeConsts(vortex, 0, 0);

      vortex_EqHw_SetLeftCoefs(vortex, asEqCoefsPipes);
      vortex_EqHw_SetRightCoefs(vortex, asEqCoefsPipes);

      vortex_EqHw_SetLeftGainsCurrent(vortex, eq_gains_current);
      vortex_EqHw_SetRightGainsCurrent(vortex, eq_gains_current);
      vortex_EqHw_SetLeftGainsTarget(vortex, eq_gains_current);
      vortex_EqHw_SetRightGainsTarget(vortex, eq_gains_current);
}

/* Program EQ block as 10 band Equalizer */
static void
vortex_EqHw_Program10Band(vortex_t * vortex, auxxEqCoeffSet_t * coefset)
{

      vortex_EqHw_SetTimeConsts(vortex, 0xc, 0x7fe0);

      vortex_EqHw_SetLeftCoefs(vortex, coefset->LeftCoefs);
      vortex_EqHw_SetRightCoefs(vortex, coefset->RightCoefs);

      vortex_EqHw_SetLeftGainsCurrent(vortex, coefset->LeftGains);

      vortex_EqHw_SetRightGainsTarget(vortex, coefset->RightGains);
      vortex_EqHw_SetLeftGainsTarget(vortex, coefset->LeftGains);

      vortex_EqHw_SetRightGainsCurrent(vortex, coefset->RightGains);
}

/* Read all EQ peaks. (think VU meter) */
static void vortex_EqHw_GetTenBandLevels(vortex_t * vortex, u16 peaks[])
{
      eqhw_t *eqhw = &(vortex->eq.this04);
      int i;

      if (eqhw->this04 <= 0)
            return;

      for (i = 0; i < eqhw->this04; i++)
            peaks[i] = hwread(vortex->mmio, 0x2B024 + i * 0x30);
      for (i = 0; i < eqhw->this04; i++)
            peaks[i + eqhw->this04] =
                hwread(vortex->mmio, 0x2B204 + i * 0x30);
}

/* CEqlzr.s */

static int vortex_Eqlzr_GetLeftGain(vortex_t * vortex, u16 index, u16 * gain)
{
      eqlzr_t *eq = &(vortex->eq);

      if (eq->this28) {
            *gain = eq->this130[index];
            return 0;
      }
      return 1;
}

static void vortex_Eqlzr_SetLeftGain(vortex_t * vortex, u16 index, u16 gain)
{
      eqlzr_t *eq = &(vortex->eq);

      if (eq->this28 == 0)
            return;

      eq->this130[index] = gain;
      if (eq->this54)
            return;

      vortex_EqHw_SetLeftGainsSingleTarget(vortex, index, gain);
}

static int vortex_Eqlzr_GetRightGain(vortex_t * vortex, u16 index, u16 * gain)
{
      eqlzr_t *eq = &(vortex->eq);

      if (eq->this28) {
            *gain = eq->this130[index + eq->this10];
            return 0;
      }
      return 1;
}

static void vortex_Eqlzr_SetRightGain(vortex_t * vortex, u16 index, u16 gain)
{
      eqlzr_t *eq = &(vortex->eq);

      if (eq->this28 == 0)
            return;

      eq->this130[index + eq->this10] = gain;
      if (eq->this54)
            return;

      vortex_EqHw_SetRightGainsSingleTarget(vortex, index, gain);
}

#if 0
static int
vortex_Eqlzr_GetAllBands(vortex_t * vortex, u16 * gains, s32 *cnt)
{
      eqlzr_t *eq = &(vortex->eq);
      int si = 0;

      if (eq->this10 == 0)
            return 1;

      {
            if (vortex_Eqlzr_GetLeftGain(vortex, si, &gains[si]))
                  return 1;
            if (vortex_Eqlzr_GetRightGain
                (vortex, si, &gains[si + eq->this10]))
                  return 1;
            si++;
      }
      while (eq->this10 > si) ;
      *cnt = si * 2;
      return 0;
}
#endif
static int vortex_Eqlzr_SetAllBandsFromActiveCoeffSet(vortex_t * vortex)
{
      eqlzr_t *eq = &(vortex->eq);

      vortex_EqHw_SetLeftGainsTarget(vortex, eq->this130);
      vortex_EqHw_SetRightGainsTarget(vortex, &(eq->this130[eq->this10]));

      return 0;
}

static int
vortex_Eqlzr_SetAllBands(vortex_t * vortex, u16 gains[], s32 count)
{
      eqlzr_t *eq = &(vortex->eq);
      int i;

      if (((eq->this10) * 2 != count) || (eq->this28 == 0))
            return 1;

      for (i = 0; i < count; i++) {
            eq->this130[i] = gains[i];
      }
      
      if (eq->this54)
            return 0;
      return vortex_Eqlzr_SetAllBandsFromActiveCoeffSet(vortex);
}

static void
vortex_Eqlzr_SetA3dBypassGain(vortex_t * vortex, u32 a, u32 b)
{
      eqlzr_t *eq = &(vortex->eq);
      u32 eax, ebx;

      eq->this58 = a;
      eq->this5c = b;
      if (eq->this54)
            eax = eq->this0e;
      else
            eax = eq->this0a;
      ebx = (eax * eq->this58) >> 0x10;
      eax = (eax * eq->this5c) >> 0x10;
      vortex_EqHw_SetA3DBypassGain(vortex, ebx, eax);
}

static void vortex_Eqlzr_ProgramA3dBypassGain(vortex_t * vortex)
{
      eqlzr_t *eq = &(vortex->eq);
      u32 eax, ebx;

      if (eq->this54)
            eax = eq->this0e;
      else
            eax = eq->this0a;
      ebx = (eax * eq->this58) >> 0x10;
      eax = (eax * eq->this5c) >> 0x10;
      vortex_EqHw_SetA3DBypassGain(vortex, ebx, eax);
}

static void vortex_Eqlzr_ShutDownA3d(vortex_t * vortex)
{
      if (vortex != NULL)
            vortex_EqHw_ZeroA3DIO(vortex);
}

static void vortex_Eqlzr_SetBypass(vortex_t * vortex, u32 bp)
{
      eqlzr_t *eq = &(vortex->eq);
      
      if ((eq->this28) && (bp == 0)) {
            /* EQ enabled */
            vortex_Eqlzr_SetAllBandsFromActiveCoeffSet(vortex);
            vortex_EqHw_SetBypassGain(vortex, eq->this08, eq->this08);
      } else {
            /* EQ disabled. */
            vortex_EqHw_SetLeftGainsTarget(vortex, eq->this14_array);
            vortex_EqHw_SetRightGainsTarget(vortex, eq->this14_array);
            vortex_EqHw_SetBypassGain(vortex, eq->this0c, eq->this0c);
      }
      vortex_Eqlzr_ProgramA3dBypassGain(vortex);
}

static void vortex_Eqlzr_ReadAndSetActiveCoefSet(vortex_t * vortex)
{
      eqlzr_t *eq = &(vortex->eq);

      /* Set EQ BiQuad filter coeficients */
      memcpy(&(eq->coefset), &asEqCoefsNormal, sizeof(auxxEqCoeffSet_t));
      /* Set EQ Band gain levels and dump into hardware registers. */
      vortex_Eqlzr_SetAllBands(vortex, eq_gains_normal, eq->this10 * 2);
}

static int vortex_Eqlzr_GetAllPeaks(vortex_t * vortex, u16 * peaks, int *count)
{
      eqlzr_t *eq = &(vortex->eq);

      if (eq->this10 == 0)
            return 1;
      *count = eq->this10 * 2;
      vortex_EqHw_GetTenBandLevels(vortex, peaks);
      return 0;
}

#if 0
static auxxEqCoeffSet_t *vortex_Eqlzr_GetActiveCoefSet(vortex_t * vortex)
{
      eqlzr_t *eq = &(vortex->eq);

      return (&(eq->coefset));
}
#endif
static void vortex_Eqlzr_init(vortex_t * vortex)
{
      eqlzr_t *eq = &(vortex->eq);

      /* Object constructor */
      //eq->this04 = 0;
      eq->this08 = 0;         /* Bypass gain with EQ in use. */
      eq->this0a = 0x5999;
      eq->this0c = 0x5999;    /* Bypass gain with EQ disabled. */
      eq->this0e = 0x5999;

      eq->this10 = 0xa; /* 10 eq frequency bands. */
      eq->this04.this04 = eq->this10;
      eq->this28 = 0x1; /* if 1 => Allow read access to this130 (gains) */
      eq->this54 = 0x0; /* if 1 => Dont Allow access to hardware (gains) */
      eq->this58 = 0xffff;
      eq->this5c = 0xffff;

      /* Set gains. */
      memset(eq->this14_array, 0, sizeof(eq->this14_array));

      /* Actual init. */
      vortex_EqHw_ZeroState(vortex);
      vortex_EqHw_SetSampleRate(vortex, 0x11);
      vortex_Eqlzr_ReadAndSetActiveCoefSet(vortex);

      vortex_EqHw_Program10Band(vortex, &(eq->coefset));
      vortex_Eqlzr_SetBypass(vortex, eq->this54);
      vortex_Eqlzr_SetA3dBypassGain(vortex, 0, 0);
      vortex_EqHw_Enable(vortex);
}

static void vortex_Eqlzr_shutdown(vortex_t * vortex)
{
      vortex_Eqlzr_ShutDownA3d(vortex);
      vortex_EqHw_ProgramPipe(vortex);
      vortex_EqHw_Disable(vortex);
}

/* ALSA interface */

/* Control interface */
#define snd_vortex_eqtoggle_info    snd_ctl_boolean_mono_info

static int
snd_vortex_eqtoggle_get(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol)
{
      vortex_t *vortex = snd_kcontrol_chip(kcontrol);
      eqlzr_t *eq = &(vortex->eq);
      //int i = kcontrol->private_value;

      ucontrol->value.integer.value[0] = eq->this54 ? 0 : 1;

      return 0;
}

static int
snd_vortex_eqtoggle_put(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol)
{
      vortex_t *vortex = snd_kcontrol_chip(kcontrol);
      eqlzr_t *eq = &(vortex->eq);
      //int i = kcontrol->private_value;

      eq->this54 = ucontrol->value.integer.value[0] ? 0 : 1;
      vortex_Eqlzr_SetBypass(vortex, eq->this54);

      return 1;         /* Allways changes */
}

static struct snd_kcontrol_new vortex_eqtoggle_kcontrol __devinitdata = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "EQ Enable",
      .index = 0,
      .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
      .private_value = 0,
      .info = snd_vortex_eqtoggle_info,
      .get = snd_vortex_eqtoggle_get,
      .put = snd_vortex_eqtoggle_put
};

static int
snd_vortex_eq_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = 2;
      uinfo->value.integer.min = 0x0000;
      uinfo->value.integer.max = 0x7fff;
      return 0;
}

static int
snd_vortex_eq_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      vortex_t *vortex = snd_kcontrol_chip(kcontrol);
      int i = kcontrol->private_value;
      u16 gainL = 0, gainR = 0;

      vortex_Eqlzr_GetLeftGain(vortex, i, &gainL);
      vortex_Eqlzr_GetRightGain(vortex, i, &gainR);
      ucontrol->value.integer.value[0] = gainL;
      ucontrol->value.integer.value[1] = gainR;
      return 0;
}

static int
snd_vortex_eq_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      vortex_t *vortex = snd_kcontrol_chip(kcontrol);
      int changed = 0, i = kcontrol->private_value;
      u16 gainL = 0, gainR = 0;

      vortex_Eqlzr_GetLeftGain(vortex, i, &gainL);
      vortex_Eqlzr_GetRightGain(vortex, i, &gainR);

      if (gainL != ucontrol->value.integer.value[0]) {
            vortex_Eqlzr_SetLeftGain(vortex, i,
                               ucontrol->value.integer.value[0]);
            changed = 1;
      }
      if (gainR != ucontrol->value.integer.value[1]) {
            vortex_Eqlzr_SetRightGain(vortex, i,
                                ucontrol->value.integer.value[1]);
            changed = 1;
      }
      return changed;
}

static struct snd_kcontrol_new vortex_eq_kcontrol __devinitdata = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "                        .",
      .index = 0,
      .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
      .private_value = 0,
      .info = snd_vortex_eq_info,
      .get = snd_vortex_eq_get,
      .put = snd_vortex_eq_put
};

static int
snd_vortex_peaks_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = 20;
      uinfo->value.integer.min = 0x0000;
      uinfo->value.integer.max = 0x7fff;
      return 0;
}

static int
snd_vortex_peaks_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
      vortex_t *vortex = snd_kcontrol_chip(kcontrol);
      int i, count = 0;
      u16 peaks[20];

      vortex_Eqlzr_GetAllPeaks(vortex, peaks, &count);
      if (count != 20) {
            printk(KERN_ERR "vortex: peak count error 20 != %d \n", count);
            return -1;
      }
      for (i = 0; i < 20; i++)
            ucontrol->value.integer.value[i] = peaks[i];

      return 0;
}

static struct snd_kcontrol_new vortex_levels_kcontrol __devinitdata = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "EQ Peaks",
      .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
      .info = snd_vortex_peaks_info,
      .get = snd_vortex_peaks_get,
};

/* EQ band gain labels. */
static char *EqBandLabels[10] __devinitdata = {
      "EQ0 31Hz\0",
      "EQ1 63Hz\0",
      "EQ2 125Hz\0",
      "EQ3 250Hz\0",
      "EQ4 500Hz\0",
      "EQ5 1KHz\0",
      "EQ6 2KHz\0",
      "EQ7 4KHz\0",
      "EQ8 8KHz\0",
      "EQ9 16KHz\0",
};

/* ALSA driver entry points. Init and exit. */
static int __devinit vortex_eq_init(vortex_t * vortex)
{
      struct snd_kcontrol *kcontrol;
      int err, i;

      vortex_Eqlzr_init(vortex);

      if ((kcontrol =
           snd_ctl_new1(&vortex_eqtoggle_kcontrol, vortex)) == NULL)
            return -ENOMEM;
      kcontrol->private_value = 0;
      if ((err = snd_ctl_add(vortex->card, kcontrol)) < 0)
            return err;

      /* EQ gain controls */
      for (i = 0; i < 10; i++) {
            if ((kcontrol =
                 snd_ctl_new1(&vortex_eq_kcontrol, vortex)) == NULL)
                  return -ENOMEM;
            strcpy(kcontrol->id.name, EqBandLabels[i]);
            kcontrol->private_value = i;
            if ((err = snd_ctl_add(vortex->card, kcontrol)) < 0)
                  return err;
            //vortex->eqctrl[i] = kcontrol;
      }
      /* EQ band levels */
      if ((kcontrol = snd_ctl_new1(&vortex_levels_kcontrol, vortex)) == NULL)
            return -ENOMEM;
      if ((err = snd_ctl_add(vortex->card, kcontrol)) < 0)
            return err;

      return 0;
}

static int vortex_eq_free(vortex_t * vortex)
{
      /*
         //FIXME: segfault because vortex->eqctrl[i] == 4
         int i;
         for (i=0; i<10; i++) {
         if (vortex->eqctrl[i])
         snd_ctl_remove(vortex->card, vortex->eqctrl[i]);
         }
       */
      vortex_Eqlzr_shutdown(vortex);
      return 0;
}

/* End */

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