1#ifndef __SOUND_SEQ_DEVICE_H
 2#define __SOUND_SEQ_DEVICE_H
 3
 4/*
 5 *  ALSA sequencer device management
 6 *  Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
 7 *
 8 *   This program is free software; you can redistribute it and/or modify
 9 *   it under the terms of the GNU General Public License as published by
10 *   the Free Software Foundation; either version 2 of the License, or
11 *   (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
21 *
22 */
23
24/*
25 * registered device information
26 */
27
28#define ID_LEN	32
29
30/* status flag */
31#define SNDRV_SEQ_DEVICE_FREE		0
32#define SNDRV_SEQ_DEVICE_REGISTERED	1
33
34struct snd_seq_device {
35	/* device info */
36	struct snd_card *card;	/* sound card */
37	int device;		/* device number */
38	char id[ID_LEN];	/* driver id */
39	char name[80];		/* device name */
40	int argsize;		/* size of the argument */
41	void *driver_data;	/* private data for driver */
42	int status;		/* flag - read only */
43	void *private_data;	/* private data for the caller */
44	void (*private_free)(struct snd_seq_device *device);
45	struct list_head list;	/* link to next device */
46};
47
 
 
 
 
48
49/* driver operators
50 * init_device:
51 *	Initialize the device with given parameters.
52 *	Typically,
53 *		1. call snd_hwdep_new
54 *		2. allocate private data and initialize it
55 *		3. call snd_hwdep_register
56 *		4. store the instance to dev->driver_data pointer.
57 *		
58 * free_device:
59 *	Release the private data.
60 *	Typically, call snd_device_free(dev->card, dev->driver_data)
61 */
62struct snd_seq_dev_ops {
63	int (*init_device)(struct snd_seq_device *dev);
64	int (*free_device)(struct snd_seq_device *dev);
 
65};
66
 
 
 
67/*
68 * prototypes
69 */
 
70void snd_seq_device_load_drivers(void);
71int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize, struct snd_seq_device **result);
72int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry, int argsize);
73int snd_seq_device_unregister_driver(char *id);
 
 
74
75#define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device))
76
 
 
 
 
 
 
 
 
77
78/*
79 * id strings for generic devices
80 */
81#define SNDRV_SEQ_DEV_ID_MIDISYNTH	"seq-midi"
82#define SNDRV_SEQ_DEV_ID_OPL3		"opl3-synth"
83
84#endif /* __SOUND_SEQ_DEVICE_H */

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2#ifndef __SOUND_SEQ_DEVICE_H
 3#define __SOUND_SEQ_DEVICE_H
 4
 5/*
 6 *  ALSA sequencer device management
 7 *  Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8 */
 9
10/*
11 * registered device information
12 */
13
 
 
 
 
 
 
14struct snd_seq_device {
15	/* device info */
16	struct snd_card *card;	/* sound card */
17	int device;		/* device number */
18	const char *id;		/* driver id */
19	char name[80];		/* device name */
20	int argsize;		/* size of the argument */
21	void *driver_data;	/* private data for driver */
 
22	void *private_data;	/* private data for the caller */
23	void (*private_free)(struct snd_seq_device *device);
24	struct device dev;
25};
26
27#define to_seq_dev(_dev) \
28	container_of(_dev, struct snd_seq_device, dev)
29
30/* sequencer driver */
31
32/* driver operators
33 * probe:
34 *	Initialize the device with given parameters.
35 *	Typically,
36 *		1. call snd_hwdep_new
37 *		2. allocate private data and initialize it
38 *		3. call snd_hwdep_register
39 *		4. store the instance to dev->driver_data pointer.
40 *		
41 * remove:
42 *	Release the private data.
43 *	Typically, call snd_device_free(dev->card, dev->driver_data)
44 */
45struct snd_seq_driver {
46	struct device_driver driver;
47	char *id;
48	int argsize;
49};
50
51#define to_seq_drv(_drv) \
52	container_of(_drv, struct snd_seq_driver, driver)
53
54/*
55 * prototypes
56 */
57#ifdef CONFIG_MODULES
58void snd_seq_device_load_drivers(void);
59#else
60#define snd_seq_device_load_drivers()
61#endif
62int snd_seq_device_new(struct snd_card *card, int device, const char *id,
63		       int argsize, struct snd_seq_device **result);
64
65#define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device))
66
67int __must_check __snd_seq_driver_register(struct snd_seq_driver *drv,
68					   struct module *mod);
69#define snd_seq_driver_register(drv) \
70	__snd_seq_driver_register(drv, THIS_MODULE)
71void snd_seq_driver_unregister(struct snd_seq_driver *drv);
72
73#define module_snd_seq_driver(drv) \
74	module_driver(drv, snd_seq_driver_register, snd_seq_driver_unregister)
75
76/*
77 * id strings for generic devices
78 */
79#define SNDRV_SEQ_DEV_ID_MIDISYNTH	"seq-midi"
80#define SNDRV_SEQ_DEV_ID_OPL3		"opl3-synth"
81
82#endif /* __SOUND_SEQ_DEVICE_H */