1*1a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * ALSA sequencer /proc interface 41da177e4SLinus Torvalds * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl> 51da177e4SLinus Torvalds */ 61da177e4SLinus Torvalds 71da177e4SLinus Torvalds #include <linux/init.h> 8d81a6d71SPaul Gortmaker #include <linux/export.h> 91da177e4SLinus Torvalds #include <sound/core.h> 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds #include "seq_info.h" 121da177e4SLinus Torvalds #include "seq_clientmgr.h" 131da177e4SLinus Torvalds #include "seq_timer.h" 141da177e4SLinus Torvalds 15c7e0b5bfSTakashi Iwai static struct snd_info_entry *queues_entry; 16c7e0b5bfSTakashi Iwai static struct snd_info_entry *clients_entry; 17c7e0b5bfSTakashi Iwai static struct snd_info_entry *timer_entry; 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds 20c7e0b5bfSTakashi Iwai static struct snd_info_entry * __init create_info_entry(char * name,void (* read)(struct snd_info_entry *,struct snd_info_buffer *))21bf850204STakashi Iwaicreate_info_entry(char *name, void (*read)(struct snd_info_entry *, 22c7e0b5bfSTakashi Iwai struct snd_info_buffer *)) 231da177e4SLinus Torvalds { 24c7e0b5bfSTakashi Iwai struct snd_info_entry *entry; 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds entry = snd_info_create_module_entry(THIS_MODULE, name, snd_seq_root); 271da177e4SLinus Torvalds if (entry == NULL) 281da177e4SLinus Torvalds return NULL; 291da177e4SLinus Torvalds entry->content = SNDRV_INFO_CONTENT_TEXT; 301da177e4SLinus Torvalds entry->c.text.read = read; 311da177e4SLinus Torvalds if (snd_info_register(entry) < 0) { 321da177e4SLinus Torvalds snd_info_free_entry(entry); 331da177e4SLinus Torvalds return NULL; 341da177e4SLinus Torvalds } 351da177e4SLinus Torvalds return entry; 361da177e4SLinus Torvalds } 371da177e4SLinus Torvalds snd_seq_info_done(void)3800976ad5STakashi Iwaivoid snd_seq_info_done(void) 39b591b6e9STakashi Iwai { 40b591b6e9STakashi Iwai snd_info_free_entry(queues_entry); 41b591b6e9STakashi Iwai snd_info_free_entry(clients_entry); 42b591b6e9STakashi Iwai snd_info_free_entry(timer_entry); 43b591b6e9STakashi Iwai } 44b591b6e9STakashi Iwai 451da177e4SLinus Torvalds /* create all our /proc entries */ snd_seq_info_init(void)461da177e4SLinus Torvaldsint __init snd_seq_info_init(void) 471da177e4SLinus Torvalds { 48bf850204STakashi Iwai queues_entry = create_info_entry("queues", 491da177e4SLinus Torvalds snd_seq_info_queues_read); 50bf850204STakashi Iwai clients_entry = create_info_entry("clients", 511da177e4SLinus Torvalds snd_seq_info_clients_read); 52bf850204STakashi Iwai timer_entry = create_info_entry("timer", snd_seq_info_timer_read); 53b591b6e9STakashi Iwai if (!queues_entry || !clients_entry || !timer_entry) 54b591b6e9STakashi Iwai goto error; 551da177e4SLinus Torvalds return 0; 56b591b6e9STakashi Iwai 57b591b6e9STakashi Iwai error: 5800976ad5STakashi Iwai snd_seq_info_done(); 59b591b6e9STakashi Iwai return -ENOMEM; 601da177e4SLinus Torvalds } 61