path: root/sound/pci/au88x0/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