sound/core/seq/seq.c

   1 /*
   2  *  ALSA sequencer main module
   3  *  Copyright (c) 1998-1999 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 <linux/moduleparam.h>
  25 #include <sound/core.h>
  26 #include <sound/initval.h>
  27
  28 #include <sound/seq_kernel.h>
  29 #include "seq_clientmgr.h"
  30 #include "seq_memory.h"
  31 #include "seq_queue.h"
  32 #include "seq_lock.h"
  33 #include "seq_timer.h"
  34 #include "seq_system.h"
  35 #include "seq_info.h"
  36 #include <sound/seq_device.h>
  37
  38 #if defined(CONFIG_SND_SEQ_DUMMY_MODULE)
  39 int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1};
  40 #else
  41 int seq_client_load[15] = {[0 ... 14] = -1};
  42 #endif
  43 int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL;
  44 int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE;
  45 int seq_default_timer_card = -1;
  46 int seq_default_timer_device =
  47 #ifdef CONFIG_SND_SEQ_RTCTIMER_DEFAULT
  48         SNDRV_TIMER_GLOBAL_RTC
  49 #else
  50         SNDRV_TIMER_GLOBAL_SYSTEM
  51 #endif
  52         ;
  53 int seq_default_timer_subdevice = 0;
  54 int seq_default_timer_resolution = 0;   /* Hz */
  55
  56 MODULE_AUTHOR("Frank van de Pol <fvdpol@coil.demon.nl>, Jaroslav Kysela <perex@suse.cz>");
  57 MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer.");
  58 MODULE_LICENSE("GPL");
  59
  60 module_param_array(seq_client_load, int, NULL, 0444);
  61 MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod.");
  62 module_param(seq_default_timer_class, int, 0644);
  63 MODULE_PARM_DESC(seq_default_timer_class, "The default timer class.");
  64 module_param(seq_default_timer_sclass, int, 0644);
  65 MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class.");
  66 module_param(seq_default_timer_card, int, 0644);
  67 MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number.");
  68 module_param(seq_default_timer_device, int, 0644);
  69 MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number.");
  70 module_param(seq_default_timer_subdevice, int, 0644);
  71 MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number.");
  72 module_param(seq_default_timer_resolution, int, 0644);
  73 MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz.");
  74
  75 /*
  76  *  INIT PART
  77  */
  78
  79 static int __init alsa_seq_init(void)
  80 {
  81         int err;
  82
  83         snd_seq_autoload_lock();
  84         if ((err = client_init_data()) < 0)
  85                 goto error;
  86
  87         /* init memory, room for selected events */
  88         if ((err = snd_sequencer_memory_init()) < 0)
  89                 goto error;
  90
  91         /* init event queues */
  92         if ((err = snd_seq_queues_init()) < 0)
  93                 goto error;
  94
  95         /* register sequencer device */
  96         if ((err = snd_sequencer_device_init()) < 0)
  97                 goto error;
  98
  99         /* register proc interface */
 100         if ((err = snd_seq_info_init()) < 0)
 101                 goto error;
 102
 103         /* register our internal client */
 104         if ((err = snd_seq_system_client_init()) < 0)
 105                 goto error;
 106
 107  error:
 108         snd_seq_autoload_unlock();
 109         return err;
 110 }
 111
 112 static void __exit alsa_seq_exit(void)
 113 {
 114         /* unregister our internal client */
 115         snd_seq_system_client_done();
 116
 117         /* unregister proc interface */
 118         snd_seq_info_done();
 119
 120         /* delete timing queues */
 121         snd_seq_queues_delete();
 122
 123         /* unregister sequencer device */
 124         snd_sequencer_device_done();
 125
 126         /* release event memory */
 127         snd_sequencer_memory_done();
 128 }
 129
 130 module_init(alsa_seq_init)
 131 module_exit(alsa_seq_exit)