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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
*
* Routines for control of EMU10K1 WaveTable synth
*/
#include "emu10k1_synth_local.h"
#include <linux/init.h>
#include <linux/module.h>
MODULE_AUTHOR("Takashi Iwai");
MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth");
MODULE_LICENSE("GPL");
/*
* create a new hardware dependent device for Emu10k1
*/
static int snd_emu10k1_synth_probe(struct device *_dev)
{
struct snd_seq_device *dev = to_seq_dev(_dev);
struct snd_emux *emux;
struct snd_emu10k1 *hw;
struct snd_emu10k1_synth_arg *arg;
arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
if (arg == NULL)
return -EINVAL;
if (arg->seq_ports <= 0)
return 0; /* nothing */
if (arg->max_voices < 1)
arg->max_voices = 1;
else if (arg->max_voices > 64)
arg->max_voices = 64;
if (snd_emux_new(&emux) < 0)
return -ENOMEM;
snd_emu10k1_ops_setup(emux);
hw = arg->hwptr;
emux->hw = hw;
emux->max_voices = arg->max_voices;
emux->num_ports = arg->seq_ports;
emux->memhdr = hw->memhdr;
/* maximum two ports */
emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2;
/* audigy has two external midis */
emux->midi_devidx = hw->audigy ? 2 : 1;
emux->linear_panning = 0;
emux->hwdep_idx = 2; /* FIXED */
if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) {
snd_emux_free(emux);
return -ENOMEM;
}
spin_lock_irq(&hw->voice_lock);
hw->synth = emux;
hw->get_synth_voice = snd_emu10k1_synth_get_voice;
spin_unlock_irq(&hw->voice_lock);
dev->driver_data = emux;
return 0;
}
static int snd_emu10k1_synth_remove(struct device *_dev)
{
struct snd_seq_device *dev = to_seq_dev(_dev);
struct snd_emux *emux;
struct snd_emu10k1 *hw;
if (dev->driver_data == NULL)
return 0; /* not registered actually */
emux = dev->driver_data;
hw = emux->hw;
spin_lock_irq(&hw->voice_lock);
hw->synth = NULL;
hw->get_synth_voice = NULL;
spin_unlock_irq(&hw->voice_lock);
snd_emux_free(emux);
return 0;
}
/*
* INIT part
*/
static struct snd_seq_driver emu10k1_synth_driver = {
.driver = {
.name = KBUILD_MODNAME,
.probe = snd_emu10k1_synth_probe,
.remove = snd_emu10k1_synth_remove,
},
.id = SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
.argsize = sizeof(struct snd_emu10k1_synth_arg),
};
module_snd_seq_driver(emu10k1_synth_driver);
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