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 | |
15 | static struct snd_info_entry *queues_entry; |
16 | static struct snd_info_entry *clients_entry; |
17 | static struct snd_info_entry *timer_entry; |
18 | |
19 | |
20 | static struct snd_info_entry * __init |
21 | create_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 | |
38 | void 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 */ |
46 | int __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 |