Linux Kernel  3.7.1
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seq.c
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1 /*
2  * ALSA sequencer main module
3  * Copyright (c) 1998-1999 by Frank van de Pol <[email protected]>
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)
40 int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1};
41 #else
42 int seq_client_load[15] = {[0 ... 14] = -1};
43 #endif
48 #ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT
50 #elif defined(CONFIG_SND_SEQ_RTCTIMER_DEFAULT)
52 #else
54 #endif
55  ;
58 
59 MODULE_AUTHOR("Frank van de Pol <[email protected]>, Jaroslav Kysela <[email protected]>");
60 MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer.");
61 MODULE_LICENSE("GPL");
62 
64 MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod.");
66 MODULE_PARM_DESC(seq_default_timer_class, "The default timer class.");
68 MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class.");
70 MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number.");
72 MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number.");
74 MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number.");
76 MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz.");
77 
79 MODULE_ALIAS("devname:snd/seq");
80 
81 /*
82  * INIT PART
83  */
84 
85 static int __init alsa_seq_init(void)
86 {
87  int err;
88 
90  if ((err = client_init_data()) < 0)
91  goto error;
92 
93  /* init memory, room for selected events */
94  if ((err = snd_sequencer_memory_init()) < 0)
95  goto error;
96 
97  /* init event queues */
98  if ((err = snd_seq_queues_init()) < 0)
99  goto error;
100 
101  /* register sequencer device */
102  if ((err = snd_sequencer_device_init()) < 0)
103  goto error;
104 
105  /* register proc interface */
106  if ((err = snd_seq_info_init()) < 0)
107  goto error;
108 
109  /* register our internal client */
110  if ((err = snd_seq_system_client_init()) < 0)
111  goto error;
112 
113  error:
115  return err;
116 }
117 
118 static void __exit alsa_seq_exit(void)
119 {
120  /* unregister our internal client */
122 
123  /* unregister proc interface */
124  snd_seq_info_done();
125 
126  /* delete timing queues */
128 
129  /* unregister sequencer device */
131 
132  /* release event memory */
134 }
135 
136 module_init(alsa_seq_init)
137 module_exit(alsa_seq_exit)