/*
* OSS emulation layer for the mixer interface
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
*
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/string.h>
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/control.h>
#include <sound/info.h>
#include <sound/mixer_oss.h>
#include <linux/soundcard.h>
#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
MODULE_LICENSE("GPL");
MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
static int snd_mixer_oss_open(struct inode *inode, struct file *file)
{
struct snd_card *card;
struct snd_mixer_oss_file *fmixer;
int err;
card = snd_lookup_oss_minor_data(iminor(inode),
SNDRV_OSS_DEVICE_TYPE_MIXER);
if (card == NULL)
return -ENODEV;
if (card->mixer_oss == NULL)
return -ENODEV;
err = snd_card_file_add(card, file);
if (err < 0)
return err;
fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
if (fmixer == NULL) {
snd_card_file_remove(card, file);
return -ENOMEM;
}
fmixer->card = card;
fmixer->mixer = card->mixer_oss;
file->private_data = fmixer;
if (!try_module_get(card->module)) {
kfree(fmixer);
snd_card_file_remove(card, file);
return -EFAULT;
}
return 0;
}
static int snd_mixer_oss_release(struct inode *inode,</