linux/sound/drivers/opl3/opl3_oss.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Interface for OSS sequencer emulation
 *
 *  Copyright (C) 2000 Uros Bizjak <[email protected]>
 */

#include <linux/export.h>
#include "opl3_voice.h"

static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure);
static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg);
static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg);
static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count);
static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg);

/* operators */

static const struct snd_seq_oss_callback oss_callback = …;

static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct,
				    void *private_data, int atomic, int hop)
{ … }

/* ------------------------------ */

static void snd_opl3_oss_free_port(void *private_data)
{ … }

static int snd_opl3_oss_create_port(struct snd_opl3 * opl3)
{ … }

/* ------------------------------ */

/* register OSS synth */
void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name)
{ … }

/* unregister */
void snd_opl3_free_seq_oss(struct snd_opl3 *opl3)
{ … }

/* ------------------------------ */

/* open OSS sequencer */
static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
{ … }

/* close OSS sequencer */
static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg)
{ … }

/* load patch */

/* from sound_config.h */
#define SBFM_MAXINSTR …

static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
				       const char __user *buf, int offs, int count)
{ … }

/* ioctl */
static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
				  unsigned long ioarg)
{ … }

/* reset device */
static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg)
{ … }