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linux-next/sound/drivers/opl3/opl3_seq.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

277 lines
6.6 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) by Uros Bizjak <uros@kss-loka.si>
*
* Midi Sequencer interface routines for OPL2/OPL3/OPL4 FM
*
* OPL2/3 FM instrument loader:
* alsa-tools/seq/sbiload/
*/
#include "opl3_voice.h"
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/module.h>
#include <sound/initval.h>
MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ALSA driver for OPL3 FM synth");
bool use_internal_drums = 0;
module_param(use_internal_drums, bool, 0444);
MODULE_PARM_DESC(use_internal_drums, "Enable internal OPL2/3 drums.");
int snd_opl3_synth_use_inc(struct snd_opl3 * opl3)
{
if (!try_module_get(opl3->card->module))
return -EFAULT;
return 0;
}
void snd_opl3_synth_use_dec(struct snd_opl3 * opl3)
{
module_put(opl3->card->module);
}
int snd_opl3_synth_setup(struct snd_opl3 * opl3)
{
int idx;
struct snd_hwdep *hwdep = opl3->hwdep;
mutex_lock(&hwdep->open_mutex);
if (hwdep->used) {
mutex_unlock(&hwdep->open_mutex);
return -EBUSY;
}
hwdep->used++;
mutex_unlock(&hwdep->open_mutex);
snd_opl3_reset(opl3);
for (idx = 0; idx < MAX_OPL3_VOICES; idx++) {
opl3->voices[idx].state = SNDRV_OPL3_ST_OFF;
opl3->voices[idx].time = 0;
opl3->voices[idx].keyon_reg = 0x00;
}
opl3->use_time = 0;
opl3->connection_reg = 0x00;
if (opl3->hardware >= OPL3_HW_OPL3) {
/* Clear 4-op connections */
opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT,
opl3->connection_reg);
opl3->max_voices = MAX_OPL3_VOICES;
}
return 0;
}
void snd_opl3_synth_cleanup(struct snd_opl3 * opl3)
{
unsigned long flags;
struct snd_hwdep *hwdep;
/* Stop system timer */
spin_lock_irqsave(&opl3->sys_timer_lock, flags);
if (opl3->sys_timer_status) {
del_timer(&opl3->tlist);
opl3->sys_timer_status = 0;
}
spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
snd_opl3_reset(opl3);
hwdep = opl3->hwdep;
mutex_lock(&hwdep->open_mutex);
hwdep->used--;
mutex_unlock(&hwdep->open_mutex);
wake_up(&hwdep->open_wait);
}
static int snd_opl3_synth_use(void *private_data, struct snd_seq_port_subscribe * info)
{
struct snd_opl3 *opl3 = private_data;
int err;
if ((err = snd_opl3_synth_setup(opl3)) < 0)
return err;
if (use_internal_drums) {
/* Percussion mode */
opl3->voices[6].state = opl3->voices[7].state =
opl3->voices[8].state = SNDRV_OPL3_ST_NOT_AVAIL;
snd_opl3_load_drums(opl3);
opl3->drum_reg = OPL3_PERCUSSION_ENABLE;
opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, opl3->drum_reg);
} else {
opl3->drum_reg = 0x00;
}
if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) {
if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
return err;
}
opl3->synth_mode = SNDRV_OPL3_MODE_SEQ;
return 0;
}
static int snd_opl3_synth_unuse(void *private_data, struct snd_seq_port_subscribe * info)
{
struct snd_opl3 *opl3 = private_data;
snd_opl3_synth_cleanup(opl3);
if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM)
snd_opl3_synth_use_dec(opl3);
return 0;
}
/*
* MIDI emulation operators
*/
struct snd_midi_op opl3_ops = {
.note_on = snd_opl3_note_on,
.note_off = snd_opl3_note_off,
.key_press = snd_opl3_key_press,
.note_terminate = snd_opl3_terminate_note,
.control = snd_opl3_control,
.nrpn = snd_opl3_nrpn,
.sysex = snd_opl3_sysex,
};
static int snd_opl3_synth_event_input(struct snd_seq_event * ev, int direct,
void *private_data, int atomic, int hop)
{
struct snd_opl3 *opl3 = private_data;
snd_midi_process_event(&opl3_ops, ev, opl3->chset);
return 0;
}
/* ------------------------------ */
static void snd_opl3_synth_free_port(void *private_data)
{
struct snd_opl3 *opl3 = private_data;
snd_midi_channel_free_set(opl3->chset);
}
static int snd_opl3_synth_create_port(struct snd_opl3 * opl3)
{
struct snd_seq_port_callback callbacks;
char name[32];
int voices, opl_ver;
voices = (opl3->hardware < OPL3_HW_OPL3) ?
MAX_OPL2_VOICES : MAX_OPL3_VOICES;
opl3->chset = snd_midi_channel_alloc_set(16);
if (opl3->chset == NULL)
return -ENOMEM;
opl3->chset->private_data = opl3;
memset(&callbacks, 0, sizeof(callbacks));
callbacks.owner = THIS_MODULE;
callbacks.use = snd_opl3_synth_use;
callbacks.unuse = snd_opl3_synth_unuse;
callbacks.event_input = snd_opl3_synth_event_input;
callbacks.private_free = snd_opl3_synth_free_port;
callbacks.private_data = opl3;
opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
sprintf(name, "OPL%i FM Port", opl_ver);
opl3->chset->client = opl3->seq_client;
opl3->chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
SNDRV_SEQ_PORT_CAP_WRITE |
SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
SNDRV_SEQ_PORT_TYPE_MIDI_GM |
SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
SNDRV_SEQ_PORT_TYPE_HARDWARE |
SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
16, voices,
name);
if (opl3->chset->port < 0) {
int port;
port = opl3->chset->port;
snd_midi_channel_free_set(opl3->chset);
return port;
}
return 0;
}
/* ------------------------------ */
static int snd_opl3_seq_probe(struct device *_dev)
{
struct snd_seq_device *dev = to_seq_dev(_dev);
struct snd_opl3 *opl3;
int client, err;
char name[32];
int opl_ver;
opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
if (opl3 == NULL)
return -EINVAL;
spin_lock_init(&opl3->voice_lock);
opl3->seq_client = -1;
/* allocate new client */
opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
sprintf(name, "OPL%i FM synth", opl_ver);
client = opl3->seq_client =
snd_seq_create_kernel_client(opl3->card, opl3->seq_dev_num,
name);
if (client < 0)
return client;
if ((err = snd_opl3_synth_create_port(opl3)) < 0) {
snd_seq_delete_kernel_client(client);
opl3->seq_client = -1;
return err;
}
/* setup system timer */
timer_setup(&opl3->tlist, snd_opl3_timer_func, 0);
spin_lock_init(&opl3->sys_timer_lock);
opl3->sys_timer_status = 0;
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
snd_opl3_init_seq_oss(opl3, name);
#endif
return 0;
}
static int snd_opl3_seq_remove(struct device *_dev)
{
struct snd_seq_device *dev = to_seq_dev(_dev);
struct snd_opl3 *opl3;
opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
if (opl3 == NULL)
return -EINVAL;
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
snd_opl3_free_seq_oss(opl3);
#endif
if (opl3->seq_client >= 0) {
snd_seq_delete_kernel_client(opl3->seq_client);
opl3->seq_client = -1;
}
return 0;
}
static struct snd_seq_driver opl3_seq_driver = {
.driver = {
.name = KBUILD_MODNAME,
.probe = snd_opl3_seq_probe,
.remove = snd_opl3_seq_remove,
},
.id = SNDRV_SEQ_DEV_ID_OPL3,
.argsize = sizeof(struct snd_opl3 *),
};
module_snd_seq_driver(opl3_seq_driver);