linux/sound/drivers/opl4/opl4_seq.c

/*
 * OPL4 sequencer functions
 *
 * Copyright (c) 2003 by Clemens Ladisch <[email protected]>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed and/or modified 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 SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "opl4_local.h"
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <sound/initval.h>

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;

int volume_boost = …;

module_param(volume_boost, int, 0644);
MODULE_PARM_DESC(…) …;

static int snd_opl4_seq_use_inc(struct snd_opl4 *opl4)
{ … }

static void snd_opl4_seq_use_dec(struct snd_opl4 *opl4)
{ … }

static int snd_opl4_seq_use(void *private_data, struct snd_seq_port_subscribe *info)
{ … }

static int snd_opl4_seq_unuse(void *private_data, struct snd_seq_port_subscribe *info)
{ … }

static const struct snd_midi_op opl4_ops = …;

static int snd_opl4_seq_event_input(struct snd_seq_event *ev, int direct,
				    void *private_data, int atomic, int hop)
{ … }

static void snd_opl4_seq_free_port(void *private_data)
{ … }

static int snd_opl4_seq_probe(struct device *_dev)
{ … }

static int snd_opl4_seq_remove(struct device *_dev)
{ … }

static struct snd_seq_driver opl4_seq_driver = …;

module_snd_seq_driver(…) …;