#ifndef __SOUND_SEQ_DEVICE_H
#define __SOUND_SEQ_DEVICE_H
/*
* ALSA sequencer device management
* Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
*
* 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
*
*/
/*
* registered device information
*/
struct snd_seq_device {
/* device info */
struct snd_card *card; /* sound card */
int device; /* device number */
const char *id; /* driver id */
char name[80]; /* device name */
int argsize; /* size of the argument */
void *driver_data; /* private data for driver */
void *private_data; /* private data for the caller */
void (*private_free)(struct snd_seq_device *device);
struct device dev;
};
#define to_seq_dev(_dev) \
container_of(_dev, struct snd_seq_device, dev)
/* driver operators
* init_device:
* Initialize the device with given parameters.
* Typically,
* 1. call snd_hwdep_new
* 2. allocate private data and initialize it
* 3. call snd_hwdep_register
* 4. store the instance to dev->driver_data pointer.
*
* free_device:
* Release the private data.
* Typically, call snd_device_free(dev->card, dev->driver_data)
*/
struct snd_seq_dev_ops {
int (*init_device)(struct snd_seq_device *dev);
int (*free_device)(struct snd_seq_device *dev);
};
/*
* prototypes
*/
#ifdef CONFIG_MODULES
void snd_seq_device_load_drivers(void);
#else
#define snd_seq_device_load_drivers()
#endif
int snd_seq_device_new(struct snd_card *card, int device, const char *id,
int argsize, struct snd_seq_device **result);
int snd_seq_device_register_driver(const char *id,
struct snd_seq_dev_ops *entry, int argsize);
int snd_seq_device_unregister_driver(const char *id);
#define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device))
/*
* id strings for generic devices
*/
#define SNDRV_SEQ_DEV_ID_MIDISYNTH "seq-midi"
#define SNDRV_SEQ_DEV_ID_OPL3 "opl3-synth"
#endif /* __SOUND_SEQ_DEVICE_H */
