1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * ALSA sequencer main module 4 * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl> 5 */ 6 7 #include <linux/init.h> 8 #include <linux/module.h> 9 #include <linux/device.h> 10 #include <sound/core.h> 11 #include <sound/initval.h> 12 13 #include <sound/seq_kernel.h> 14 #include "seq_clientmgr.h" 15 #include "seq_memory.h" 16 #include "seq_queue.h" 17 #include "seq_lock.h" 18 #include "seq_timer.h" 19 #include "seq_system.h" 20 #include "seq_info.h" 21 #include <sound/minors.h> 22 #include <sound/seq_device.h> 23 24 #if defined(CONFIG_SND_SEQ_DUMMY_MODULE) 25 int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1}; 26 #else 27 int seq_client_load[15] = {[0 ... 14] = -1}; 28 #endif 29 int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL; 30 int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE; 31 int seq_default_timer_card = -1; 32 int seq_default_timer_device = 33 #ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT 34 SNDRV_TIMER_GLOBAL_HRTIMER 35 #else 36 SNDRV_TIMER_GLOBAL_SYSTEM 37 #endif 38 ; 39 int seq_default_timer_subdevice = 0; 40 int seq_default_timer_resolution = 0; /* Hz */ 41 42 MODULE_AUTHOR("Frank van de Pol <fvdpol@coil.demon.nl>, Jaroslav Kysela <perex@perex.cz>"); 43 MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer."); 44 MODULE_LICENSE("GPL"); 45 46 module_param_array(seq_client_load, int, NULL, 0444); 47 MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod."); 48 module_param(seq_default_timer_class, int, 0644); 49 MODULE_PARM_DESC(seq_default_timer_class, "The default timer class."); 50 module_param(seq_default_timer_sclass, int, 0644); 51 MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class."); 52 module_param(seq_default_timer_card, int, 0644); 53 MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number."); 54 module_param(seq_default_timer_device, int, 0644); 55 MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number."); 56 module_param(seq_default_timer_subdevice, int, 0644); 57 MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number."); 58 module_param(seq_default_timer_resolution, int, 0644); 59 MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz."); 60 61 MODULE_ALIAS_CHARDEV(CONFIG_SND_MAJOR, SNDRV_MINOR_SEQUENCER); 62 MODULE_ALIAS("devname:snd/seq"); 63 64 /* 65 * INIT PART 66 */ 67 alsa_seq_init(void)68 static int __init alsa_seq_init(void) 69 { 70 int err; 71 72 err = client_init_data(); 73 if (err < 0) 74 goto error; 75 76 /* register sequencer device */ 77 err = snd_sequencer_device_init(); 78 if (err < 0) 79 goto error; 80 81 /* register proc interface */ 82 err = snd_seq_info_init(); 83 if (err < 0) 84 goto error_device; 85 86 /* register our internal client */ 87 err = snd_seq_system_client_init(); 88 if (err < 0) 89 goto error_info; 90 91 snd_seq_autoload_init(); 92 return 0; 93 94 error_info: 95 snd_seq_info_done(); 96 error_device: 97 snd_sequencer_device_done(); 98 error: 99 return err; 100 } 101 alsa_seq_exit(void)102 static void __exit alsa_seq_exit(void) 103 { 104 /* unregister our internal client */ 105 snd_seq_system_client_done(); 106 107 /* unregister proc interface */ 108 snd_seq_info_done(); 109 110 /* delete timing queues */ 111 snd_seq_queues_delete(); 112 113 /* unregister sequencer device */ 114 snd_sequencer_device_done(); 115 116 snd_seq_autoload_exit(); 117 } 118 119 module_init(alsa_seq_init) 120 module_exit(alsa_seq_exit) 121