au88x0_eq.c

linux-2.6.15.6

/***************************************************************************
 *            au88x0_eq.c
 *  Aureal Vortex Hardware EQ control/access.
 *
 *  Sun Jun  8 18:19:19 2003
 *  2003  Manuel Jander ([e-mail])
 *  
 *  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, unsigned long reg)
{
	hwwrite(vortex->mmio, 0x2b440, reg);
}

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

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

static void vortex_EqHw_GetSampleRate(vortex_t * vortex, int *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 */