1 /* 2 * ALSA sequencer /proc interface 3 * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl> 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 */ 21 22 #include <linux/init.h> 23 #include <linux/export.h> 24 #include <sound/core.h> 25 26 #include "seq_info.h" 27 #include "seq_clientmgr.h" 28 #include "seq_timer.h" 29 30 static struct snd_info_entry *queues_entry; 31 static struct snd_info_entry *clients_entry; 32 static struct snd_info_entry *timer_entry; 33 34 35 static struct snd_info_entry * __init 36 create_info_entry(char *name, void (*read)(struct snd_info_entry *, 37 struct snd_info_buffer *)) 38 { 39 struct snd_info_entry *entry; 40 41 entry = snd_info_create_module_entry(THIS_MODULE, name, snd_seq_root); 42 if (entry == NULL) 43 return NULL; 44 entry->content = SNDRV_INFO_CONTENT_TEXT; 45 entry->c.text.read = read; 46 if (snd_info_register(entry) < 0) { 47 snd_info_free_entry(entry); 48 return NULL; 49 } 50 return entry; 51 } 52 53 static void free_info_entries(void) 54 { 55 snd_info_free_entry(queues_entry); 56 snd_info_free_entry(clients_entry); 57 snd_info_free_entry(timer_entry); 58 } 59 60 /* create all our /proc entries */ 61 int __init snd_seq_info_init(void) 62 { 63 queues_entry = create_info_entry("queues", 64 snd_seq_info_queues_read); 65 clients_entry = create_info_entry("clients", 66 snd_seq_info_clients_read); 67 timer_entry = create_info_entry("timer", snd_seq_info_timer_read); 68 if (!queues_entry || !clients_entry || !timer_entry) 69 goto error; 70 return 0; 71 72 error: 73 free_info_entries(); 74 return -ENOMEM; 75 } 76 77 int __exit snd_seq_info_done(void) 78 { 79 free_info_entries(); 80 return 0; 81 } 82