11da177e4SLinus Torvalds #ifndef __SOUND_SEQ_DEVICE_H 21da177e4SLinus Torvalds #define __SOUND_SEQ_DEVICE_H 31da177e4SLinus Torvalds 41da177e4SLinus Torvalds /* 51da177e4SLinus Torvalds * ALSA sequencer device management 61da177e4SLinus Torvalds * Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de> 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 91da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 101da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 111da177e4SLinus Torvalds * (at your option) any later version. 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 141da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 151da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 161da177e4SLinus Torvalds * GNU General Public License for more details. 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 191da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 201da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 211da177e4SLinus Torvalds * 221da177e4SLinus Torvalds */ 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds /* 251da177e4SLinus Torvalds * registered device information 261da177e4SLinus Torvalds */ 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds #define ID_LEN 32 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds /* status flag */ 311da177e4SLinus Torvalds #define SNDRV_SEQ_DEVICE_FREE 0 321da177e4SLinus Torvalds #define SNDRV_SEQ_DEVICE_REGISTERED 1 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds struct snd_seq_device { 351da177e4SLinus Torvalds /* device info */ 36c7e0b5bfSTakashi Iwai struct snd_card *card; /* sound card */ 371da177e4SLinus Torvalds int device; /* device number */ 381da177e4SLinus Torvalds char id[ID_LEN]; /* driver id */ 391da177e4SLinus Torvalds char name[80]; /* device name */ 401da177e4SLinus Torvalds int argsize; /* size of the argument */ 411da177e4SLinus Torvalds void *driver_data; /* private data for driver */ 421da177e4SLinus Torvalds int status; /* flag - read only */ 431da177e4SLinus Torvalds void *private_data; /* private data for the caller */ 44c7e0b5bfSTakashi Iwai void (*private_free)(struct snd_seq_device *device); 451da177e4SLinus Torvalds struct list_head list; /* link to next device */ 461da177e4SLinus Torvalds }; 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds /* driver operators 501da177e4SLinus Torvalds * init_device: 511da177e4SLinus Torvalds * Initialize the device with given parameters. 521da177e4SLinus Torvalds * Typically, 531da177e4SLinus Torvalds * 1. call snd_hwdep_new 541da177e4SLinus Torvalds * 2. allocate private data and initialize it 551da177e4SLinus Torvalds * 3. call snd_hwdep_register 561da177e4SLinus Torvalds * 4. store the instance to dev->driver_data pointer. 571da177e4SLinus Torvalds * 581da177e4SLinus Torvalds * free_device: 591da177e4SLinus Torvalds * Release the private data. 601da177e4SLinus Torvalds * Typically, call snd_device_free(dev->card, dev->driver_data) 611da177e4SLinus Torvalds */ 621da177e4SLinus Torvalds struct snd_seq_dev_ops { 63c7e0b5bfSTakashi Iwai int (*init_device)(struct snd_seq_device *dev); 64c7e0b5bfSTakashi Iwai int (*free_device)(struct snd_seq_device *dev); 651da177e4SLinus Torvalds }; 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds /* 681da177e4SLinus Torvalds * prototypes 691da177e4SLinus Torvalds */ 7072496edcSTakashi Iwai #ifdef CONFIG_MODULES 711da177e4SLinus Torvalds void snd_seq_device_load_drivers(void); 7272496edcSTakashi Iwai #else 7372496edcSTakashi Iwai #define snd_seq_device_load_drivers() 7472496edcSTakashi Iwai #endif 75c7e0b5bfSTakashi Iwai int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize, struct snd_seq_device **result); 76c7e0b5bfSTakashi Iwai int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry, int argsize); 771da177e4SLinus Torvalds int snd_seq_device_unregister_driver(char *id); 781da177e4SLinus Torvalds 79c7e0b5bfSTakashi Iwai #define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device)) 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds /* 831da177e4SLinus Torvalds * id strings for generic devices 841da177e4SLinus Torvalds */ 851da177e4SLinus Torvalds #define SNDRV_SEQ_DEV_ID_MIDISYNTH "seq-midi" 861da177e4SLinus Torvalds #define SNDRV_SEQ_DEV_ID_OPL3 "opl3-synth" 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds #endif /* __SOUND_SEQ_DEVICE_H */ 89