Initial import

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diff --git a/sound/pci/au88x0/au88x0_eq.c b/sound/pci/au88x0/au88x0_eq.c
new file mode 100644
index 000000000..9585c5c63
--- /dev/null
+++ b/sound/pci/au88x0/au88x0_eq.c
@@ -0,0 +1,930 @@
+/***************************************************************************
+ *            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 = {
+	.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 = {
+	.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) {
+		dev_err(vortex->card->dev,
+			"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 = {
+	.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] = {
+	"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 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;
+		snprintf(kcontrol->id.name, sizeof(kcontrol->id.name),
+			"%s Playback Volume", 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 */