linux-imx

/*********************************************************************

 *

 * 2002/06/30 Karsten Wiese:

 *  removed kernel-version dependencies.

 *  ripped from linux kernel 2.4.18 (OSS Implementation) by me.

 *  In the OSS Version, this file is compiled to a separate MODULE,

 *  that is used by the pinnacle and the classic driver.

 *  since there is no classic driver for alsa yet (i dont have a classic

 *  & writing one blindfold is difficult) this file's object is statically

 *  linked into the pinnacle-driver-module for now. look for the string

 *      "uncomment this to make this a module again"

 *  to do guess what.

 *

 * the following is a copy of the 2.4.18 OSS FREE file-heading comment:

 *

 * msnd.c - Driver Base

 *

 * Turtle Beach MultiSound Sound Card Driver for Linux

 *

 * Copyright (C) 1998 Andrew Veliath

 *

 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 ********************************************************************/

​

#include <linux/kernel.h>

#include <linux/sched/signal.h>

#include <linux/types.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/fs.h>

#include <linux/delay.h>

#include <linux/module.h>

​

#include <sound/core.h>

#include <sound/initval.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

​

#include "msnd.h"

​

#define LOGNAME         "msnd"

​

​

void snd_msnd_init_queue(void __iomem *base, int start, int size)

{

    writew(PCTODSP_BASED(start), base + JQS_wStart);

    writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);

    writew(0, base + JQS_wHead);

    writew(0, base + JQS_wTail);

}