linux/sound/core/sound_oss.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Advanced Linux Sound Architecture
 *  Copyright (c) by Jaroslav Kysela <[email protected]>
 */

#include <linux/init.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/info.h>
#include <linux/sound.h>
#include <linux/mutex.h>

#define SNDRV_OSS_MINORS …

static struct snd_minor *snd_oss_minors[SNDRV_OSS_MINORS];
static DEFINE_MUTEX(sound_oss_mutex);

/* NOTE: This function increments the refcount of the associated card like
 * snd_lookup_minor_data(); the caller must call snd_card_unref() appropriately
 */
void *snd_lookup_oss_minor_data(unsigned int minor, int type)
{ … }
EXPORT_SYMBOL(…);

static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev)
{ … }

int snd_register_oss_device(int type, struct snd_card *card, int dev,
			    const struct file_operations *f_ops, void *private_data)
{ … }
EXPORT_SYMBOL(…);

int snd_unregister_oss_device(int type, struct snd_card *card, int dev)
{ … }
EXPORT_SYMBOL(…);

/*
 *  INFO PART
 */

#ifdef CONFIG_SND_PROC_FS
static const char *snd_oss_device_type_name(int type)
{ … }

static void snd_minor_info_oss_read(struct snd_info_entry *entry,
				    struct snd_info_buffer *buffer)
{ … }


int __init snd_minor_info_oss_init(void)
{ … }
#endif /* CONFIG_SND_PROC_FS */