LXR linux/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 <linux/init.h>
  23#include <linux/module.h>
  24#include <linux/device.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/minors.h>
  37#include <sound/seq_device.h>
  38
  39#if defined(CONFIG_SND_SEQ_DUMMY_MODULE)
  40int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1};
  41#else
  42int seq_client_load[15] = {[0 ... 14] = -1};
  43#endif
  44int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL;
  45int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE;
  46int seq_default_timer_card = -1;
  47int seq_default_timer_device =
  48#ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT
  49        SNDRV_TIMER_GLOBAL_HRTIMER
  50#else
  51        SNDRV_TIMER_GLOBAL_SYSTEM
  52#endif
  53        ;
  54int seq_default_timer_subdevice = 0;
  55int seq_default_timer_resolution = 0;   /* Hz */
  56
  57MODULE_AUTHOR("Frank van de Pol <fvdpol@coil.demon.nl>, Jaroslav Kysela <perex@perex.cz>");
  58MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer.");
  59MODULE_LICENSE("GPL");
  60
  61module_param_array(seq_client_load, int, NULL, 0444);
  62MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod.");
  63module_param(seq_default_timer_class, int, 0644);
  64MODULE_PARM_DESC(seq_default_timer_class, "The default timer class.");
  65module_param(seq_default_timer_sclass, int, 0644);
  66MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class.");
  67module_param(seq_default_timer_card, int, 0644);
  68MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number.");
  69module_param(seq_default_timer_device, int, 0644);
  70MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number.");
  71module_param(seq_default_timer_subdevice, int, 0644);
  72MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number.");
  73module_param(seq_default_timer_resolution, int, 0644);
  74MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz.");
  75
  76MODULE_ALIAS_CHARDEV(CONFIG_SND_MAJOR, SNDRV_MINOR_SEQUENCER);
  77MODULE_ALIAS("devname:snd/seq");
  78
  79/*
  80 *  INIT PART
  81 */
  82
  83static int __init alsa_seq_init(void)
  84{
  85        int err;
  86
  87        err = client_init_data();
  88        if (err < 0)
  89                goto error;
  90
  91        /* register sequencer device */
  92        err = snd_sequencer_device_init();
  93        if (err < 0)
  94                goto error;
  95
  96        /* register proc interface */
  97        err = snd_seq_info_init();
  98        if (err < 0)
  99                goto error_device;
 100
 101        /* register our internal client */
 102        err = snd_seq_system_client_init();
 103        if (err < 0)
 104                goto error_info;
 105
 106        snd_seq_autoload_init();
 107        return 0;
 108
 109 error_info:
 110        snd_seq_info_done();
 111 error_device:
 112        snd_sequencer_device_done();
 113 error:
 114        return err;
 115}
 116
 117static void __exit alsa_seq_exit(void)
 118{
 119        /* unregister our internal client */
 120        snd_seq_system_client_done();
 121
 122        /* unregister proc interface */
 123        snd_seq_info_done();
 124        
 125        /* delete timing queues */
 126        snd_seq_queues_delete();
 127
 128        /* unregister sequencer device */
 129        snd_sequencer_device_done();
 130
 131        snd_seq_autoload_exit();
 132}
 133
 134module_init(alsa_seq_init)
 135module_exit(alsa_seq_exit)
 136