linux/sound/drivers/opl3/opl3_lib.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) by Jaroslav Kysela <[email protected]>,
 *                   Hannu Savolainen 1993-1996,
 *                   Rob Hooft
 *                   
 *  Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)
 *
 *  Most if code is ported from OSS/Lite.
 */

#include <sound/opl3.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/minors.h>
#include "opl3_voice.h"

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

static void snd_opl2_command(struct snd_opl3 * opl3, unsigned short cmd, unsigned char val)
{ … }

static void snd_opl3_command(struct snd_opl3 * opl3, unsigned short cmd, unsigned char val)
{ … }

static int snd_opl3_detect(struct snd_opl3 * opl3)
{ … }

/*
 *  AdLib timers
 */

/*
 *  Timer 1 - 80us
 */

static int snd_opl3_timer1_start(struct snd_timer * timer)
{ … }

static int snd_opl3_timer1_stop(struct snd_timer * timer)
{ … }

/*
 *  Timer 2 - 320us
 */

static int snd_opl3_timer2_start(struct snd_timer * timer)
{ … }

static int snd_opl3_timer2_stop(struct snd_timer * timer)
{ … }

/*

 */

static const struct snd_timer_hardware snd_opl3_timer1 = …;

static const struct snd_timer_hardware snd_opl3_timer2 = …;

static int snd_opl3_timer1_init(struct snd_opl3 * opl3, int timer_no)
{ … }

static int snd_opl3_timer2_init(struct snd_opl3 * opl3, int timer_no)
{ … }

/*

 */

void snd_opl3_interrupt(struct snd_hwdep * hw)
{ … }

EXPORT_SYMBOL(…);

/*

 */

static int snd_opl3_free(struct snd_opl3 *opl3)
{ … }

static int snd_opl3_dev_free(struct snd_device *device)
{ … }

int snd_opl3_new(struct snd_card *card,
		 unsigned short hardware,
		 struct snd_opl3 **ropl3)
{ … }

EXPORT_SYMBOL(…);

int snd_opl3_init(struct snd_opl3 *opl3)
{ … }

EXPORT_SYMBOL(…);

int snd_opl3_create(struct snd_card *card,
		    unsigned long l_port,
		    unsigned long r_port,
		    unsigned short hardware,
		    int integrated,
		    struct snd_opl3 ** ropl3)
{ … }

EXPORT_SYMBOL(…);

int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev)
{ … }

EXPORT_SYMBOL(…);

int snd_opl3_hwdep_new(struct snd_opl3 * opl3,
		       int device, int seq_device,
		       struct snd_hwdep ** rhwdep)
{ … }

EXPORT_SYMBOL(…);