xref: /openbmc/linux/sound/core/seq/seq.c (revision 64c70b1c)
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)
132