sound/core/seq/seq_info.c

   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 <sound/driver.h>
  23 #include <linux/init.h>
  24 #include <sound/core.h>
  25
  26 #include "seq_info.h"
  27 #include "seq_clientmgr.h"
  28 #include "seq_timer.h"
  29
  30
  31 static snd_info_entry_t *queues_entry;
  32 static snd_info_entry_t *clients_entry;
  33 static snd_info_entry_t *timer_entry;
  34
  35
  36 static snd_info_entry_t * __init
  37 create_info_entry(char *name, int size, void (*read)(snd_info_entry_t *, snd_info_buffer_t *))
  38 {
  39         snd_info_entry_t *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_size = size;
  46         entry->c.text.read = read;
  47         if (snd_info_register(entry) < 0) {
  48                 snd_info_free_entry(entry);
  49                 return NULL;
  50         }
  51         return entry;
  52 }
  53
  54
  55 /* create all our /proc entries */
  56 int __init snd_seq_info_init(void)
  57 {
  58         queues_entry = create_info_entry("queues", 512 + (256 * SNDRV_SEQ_MAX_QUEUES),
  59                                          snd_seq_info_queues_read);
  60         clients_entry = create_info_entry("clients", 512 + (256 * SNDRV_SEQ_MAX_CLIENTS),
  61                                           snd_seq_info_clients_read);
  62         timer_entry = create_info_entry("timer", 1024, snd_seq_info_timer_read);
  63         return 0;
  64 }
  65
  66 int __exit snd_seq_info_done(void)
  67 {
  68         if (queues_entry)
  69                 snd_info_unregister(queues_entry);
  70         if (clients_entry)
  71                 snd_info_unregister(clients_entry);
  72         if (timer_entry)
  73                 snd_info_unregister(timer_entry);
  74         return 0;
  75 }