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/*
* Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
*
* Routines for control of EMU10K1 WaveTable synth
*
* 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
*/
#include "emu10k1_synth_local.h"
#include <linux/init.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_new_device(snd_seq_device_t *dev)
{
snd_emux_t *emu;
emu10k1_t *hw;
snd_emu10k1_synth_arg_t *arg;
unsigned long flags;
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(&emu) < 0)
return -ENOMEM;
snd_emu10k1_ops_setup(emu);
emu->hw = hw = arg->hwptr;
emu->max_voices = arg->max_voices;
emu->num_ports = arg->seq_ports;
emu->pitch_shift = -501;
emu->memhdr = hw->memhdr;
emu->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; /* maximum two ports */
emu->midi_devidx = hw->audigy ? 2 : 1; /* audigy has two external midis */
emu->linear_panning = 0;
emu->hwdep_idx = 2; /* FIXED */
if (snd_emux_register(emu, dev->card, arg->index, "Emu10k1") < 0) {
snd_emux_free(emu);
emu->hw = NULL;
return -ENOMEM;
}
spin_lock_irqsave(&hw->voice_lock, flags);
hw->synth = emu;
hw->get_synth_voice = snd_emu10k1_synth_get_voice;
spin_unlock_irqrestore(&hw->voice_lock, flags);
dev->driver_data = emu;
return 0;
}
static int snd_emu10k1_synth_delete_device(snd_seq_device_t *dev)
{
snd_emux_t *emu;
emu10k1_t *hw;
unsigned long flags;
if (dev->driver_data == NULL)
return 0; /* not registered actually */
emu = dev->driver_data;
hw = emu->hw;
spin_lock_irqsave(&hw->voice_lock, flags);
hw->synth = NULL;
hw->get_synth_voice = NULL;
spin_unlock_irqrestore(&hw->voice_lock, flags);
snd_emux_free(emu);
return 0;
}
/*
* INIT part
*/
static int __init alsa_emu10k1_synth_init(void)
{
static snd_seq_dev_ops_t ops = {
snd_emu10k1_synth_new_device,
snd_emu10k1_synth_delete_device,
};
return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops, sizeof(snd_emu10k1_synth_arg_t));
}
static void __exit alsa_emu10k1_synth_exit(void)
{
snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH);
}
module_init(alsa_emu10k1_synth_init)
module_exit(alsa_emu10k1_synth_exit)
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