1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * ALSA sequencer /proc interface
4 * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
5 */
6
7#include <linux/init.h>
8#include <linux/export.h>
9#include <sound/core.h>
10
11#include "seq_info.h"
12#include "seq_clientmgr.h"
13#include "seq_timer.h"
14
15static struct snd_info_entry *queues_entry;
16static struct snd_info_entry *clients_entry;
17static struct snd_info_entry *timer_entry;
18
19
20static struct snd_info_entry * __init
21create_info_entry(char *name, void (*read)(struct snd_info_entry *,
22 struct snd_info_buffer *))
23{
24 struct snd_info_entry *entry;
25
26 entry = snd_info_create_module_entry(THIS_MODULE, name, parent: snd_seq_root);
27 if (entry == NULL)
28 return NULL;
29 entry->content = SNDRV_INFO_CONTENT_TEXT;
30 entry->c.text.read = read;
31 if (snd_info_register(entry) < 0) {
32 snd_info_free_entry(entry);
33 return NULL;
34 }
35 return entry;
36}
37
38void snd_seq_info_done(void)
39{
40 snd_info_free_entry(entry: queues_entry);
41 snd_info_free_entry(entry: clients_entry);
42 snd_info_free_entry(entry: timer_entry);
43}
44
45/* create all our /proc entries */
46int __init snd_seq_info_init(void)
47{
48 queues_entry = create_info_entry(name: "queues",
49 read: snd_seq_info_queues_read);
50 clients_entry = create_info_entry(name: "clients",
51 read: snd_seq_info_clients_read);
52 timer_entry = create_info_entry(name: "timer", read: snd_seq_info_timer_read);
53 if (!queues_entry || !clients_entry || !timer_entry)
54 goto error;
55 return 0;
56
57 error:
58 snd_seq_info_done();
59 return -ENOMEM;
60}
61