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[64] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 63] = -1};
  40 #else
  41 int seq_client_load[64] = {[0 ... 63] = -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 = SNDRV_TIMER_GLOBAL_SYSTEM;
  47 int seq_default_timer_subdevice = 0;
  48 int seq_default_timer_resolution = 0;   /* Hz */
  49
  50 MODULE_AUTHOR("Frank van de Pol <fvdpol@coil.demon.nl>, Jaroslav Kysela <perex@suse.cz>");
  51 MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer.");
  52 MODULE_LICENSE("GPL");
  53
  54 module_param_array(seq_client_load, int, NULL, 0444);
  55 MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod.");
  56 module_param(seq_default_timer_class, int, 0644);
  57 MODULE_PARM_DESC(seq_default_timer_class, "The default timer class.");
  58 module_param(seq_default_timer_sclass, int, 0644);
  59 MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class.");
  60 module_param(seq_default_timer_card, int, 0644);
  61 MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number.");
  62 module_param(seq_default_timer_device, int, 0644);
  63 MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number.");
  64 module_param(seq_default_timer_subdevice, int, 0644);
  65 MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number.");
  66 module_param(seq_default_timer_resolution, int, 0644);
  67 MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz.");
  68
  69 /*
  70  *  INIT PART
  71  */
  72
  73 static int __init alsa_seq_init(void)
  74 {
  75         int err;
  76
  77         snd_seq_autoload_lock();
  78         if ((err = client_init_data()) < 0)
  79                 goto error;
  80
  81         /* init memory, room for selected events */
  82         if ((err = snd_sequencer_memory_init()) < 0)
  83                 goto error;
  84
  85         /* init event queues */
  86         if ((err = snd_seq_queues_init()) < 0)
  87                 goto error;
  88
  89         /* register sequencer device */
  90         if ((err = snd_sequencer_device_init()) < 0)
  91                 goto error;
  92
  93         /* register proc interface */
  94         if ((err = snd_seq_info_init()) < 0)
  95                 goto error;
  96
  97         /* register our internal client */
  98         if ((err = snd_seq_system_client_init()) < 0)
  99                 goto error;
 100
 101  error:
 102         snd_seq_autoload_unlock();
 103         return err;
 104 }
 105
 106 static void __exit alsa_seq_exit(void)
 107 {
 108         /* unregister our internal client */
 109         snd_seq_system_client_done();
 110
 111         /* unregister proc interface */
 112         snd_seq_info_done();
 113
 114         /* delete timing queues */
 115         snd_seq_queues_delete();
 116
 117         /* unregister sequencer device */
 118         snd_sequencer_device_done();
 119
 120         /* release event memory */
 121         snd_sequencer_memory_done();
 122 }
 123
 124 module_init(alsa_seq_init)
 125 module_exit(alsa_seq_exit)
 126
 127   /* seq_clientmgr.c */
 128 EXPORT_SYMBOL(snd_seq_create_kernel_client);
 129 EXPORT_SYMBOL(snd_seq_delete_kernel_client);
 130 EXPORT_SYMBOL(snd_seq_kernel_client_enqueue);
 131 EXPORT_SYMBOL(snd_seq_kernel_client_enqueue_blocking);
 132 EXPORT_SYMBOL(snd_seq_kernel_client_dispatch);
 133 EXPORT_SYMBOL(snd_seq_kernel_client_ctl);
 134 EXPORT_SYMBOL(snd_seq_kernel_client_write_poll);
 135 EXPORT_SYMBOL(snd_seq_set_queue_tempo);
 136   /* seq_memory.c */
 137 EXPORT_SYMBOL(snd_seq_expand_var_event);
 138 EXPORT_SYMBOL(snd_seq_dump_var_event);
 139   /* seq_ports.c */
 140 EXPORT_SYMBOL(snd_seq_event_port_attach);
 141 EXPORT_SYMBOL(snd_seq_event_port_detach);
 142   /* seq_lock.c */
 143 #if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG)
 144 /*EXPORT_SYMBOL(snd_seq_sleep_in_lock);*/
 145 /*EXPORT_SYMBOL(snd_seq_sleep_timeout_in_lock);*/
 146 EXPORT_SYMBOL(snd_use_lock_sync_helper);
 147 #endif