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DEFINITIONS
This source file includes following definitions.
- snd_emu8000_new_device
- snd_emu8000_delete_device
- alsa_emu8000_init
- alsa_emu8000_exit
/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* and (c) 1999 Steve Ratcliffe <steve@parabola.demon.co.uk>
* Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
*
* Emu8000 synth plug-in routine
*
* 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 "emu8000_local.h"
#include <linux/init.h>
#include <sound/initval.h>
MODULE_AUTHOR("Takashi Iwai, Steve Ratcliffe");
MODULE_DESCRIPTION("Emu8000 synth plug-in routine");
MODULE_LICENSE("GPL");
/*----------------------------------------------------------------*/
/*
* create a new hardware dependent device for Emu8000
*/
static int snd_emu8000_new_device(struct snd_seq_device *dev)
{
struct snd_emu8000 *hw;
struct snd_emux *emu;
hw = *(struct snd_emu8000**)SNDRV_SEQ_DEVICE_ARGPTR(dev);
if (hw == NULL)
return -EINVAL;
if (hw->emu)
return -EBUSY; /* already exists..? */
if (snd_emux_new(&emu) < 0)
return -ENOMEM;
hw->emu = emu;
snd_emu8000_ops_setup(hw);
emu->hw = hw;
emu->max_voices = EMU8000_DRAM_VOICES;
emu->num_ports = hw->seq_ports;
if (hw->memhdr) {
snd_printk(KERN_ERR "memhdr is already initialized!?\n");
snd_util_memhdr_free(hw->memhdr);
}
hw->memhdr = snd_util_memhdr_new(hw->mem_size);
if (hw->memhdr == NULL) {
snd_emux_free(emu);
hw->emu = NULL;
return -ENOMEM;
}
emu->memhdr = hw->memhdr;
emu->midi_ports = hw->seq_ports < 2 ? hw->seq_ports : 2; /* number of virmidi ports */
emu->midi_devidx = 1;
emu->linear_panning = 1;
emu->hwdep_idx = 2; /* FIXED */
if (snd_emux_register(emu, dev->card, hw->index, "Emu8000") < 0) {
snd_emux_free(emu);
snd_util_memhdr_free(hw->memhdr);
hw->emu = NULL;
hw->memhdr = NULL;
return -ENOMEM;
}
if (hw->mem_size > 0)
snd_emu8000_pcm_new(dev->card, hw, 1);
dev->driver_data = hw;
return 0;
}
/*
* free all resources
*/
static int snd_emu8000_delete_device(struct snd_seq_device *dev)
{
struct snd_emu8000 *hw;
if (dev->driver_data == NULL)
return 0; /* no synth was allocated actually */
hw = dev->driver_data;
if (hw->pcm)
snd_device_free(dev->card, hw->pcm);
if (hw->emu)
snd_emux_free(hw->emu);
if (hw->memhdr)
snd_util_memhdr_free(hw->memhdr);
hw->emu = NULL;
hw->memhdr = NULL;
return 0;
}
/*
* INIT part
*/
static int __init alsa_emu8000_init(void)
{
static struct snd_seq_dev_ops ops = {
snd_emu8000_new_device,
snd_emu8000_delete_device,
};
return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU8000, &ops,
sizeof(struct snd_emu8000*));
}
static void __exit alsa_emu8000_exit(void)
{
snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU8000);
}
module_init(alsa_emu8000_init)
module_exit(alsa_emu8000_exit)