1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Copyright (c) by Uros Bizjak <uros@kss-loka.si>
5  *  Midi Sequencer interface routines for OPL2/OPL3/OPL4 FM
8  *   alsa-tools/seq/sbiload/
17 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
27 	if (!try_module_get(opl3->card->module))  in snd_opl3_synth_use_inc()
28 		return -EFAULT;  in snd_opl3_synth_use_inc()
35 	module_put(opl3->card->module);  in snd_opl3_synth_use_dec()
41 	struct snd_hwdep *hwdep = opl3->hwdep;  in snd_opl3_synth_setup()
43 	mutex_lock(&hwdep->open_mutex);  in snd_opl3_synth_setup()
44 	if (hwdep->used) {  in snd_opl3_synth_setup()
45 		mutex_unlock(&hwdep->open_mutex);  in snd_opl3_synth_setup()
46 		return -EBUSY;  in snd_opl3_synth_setup()
48 	hwdep->used++;  in snd_opl3_synth_setup()
49 	mutex_unlock(&hwdep->open_mutex);  in snd_opl3_synth_setup()
54 		opl3->voices[idx].state = SNDRV_OPL3_ST_OFF;  in snd_opl3_synth_setup()
55 		opl3->voices[idx].time = 0;  in snd_opl3_synth_setup()
56 		opl3->voices[idx].keyon_reg = 0x00;  in snd_opl3_synth_setup()
58 	opl3->use_time = 0;  in snd_opl3_synth_setup()
59 	opl3->connection_reg = 0x00;  in snd_opl3_synth_setup()
60 	if (opl3->hardware >= OPL3_HW_OPL3) {  in snd_opl3_synth_setup()
61 		/* Clear 4-op connections */  in snd_opl3_synth_setup()
62 		opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT,  in snd_opl3_synth_setup()
63 				 opl3->connection_reg);  in snd_opl3_synth_setup()
64 		opl3->max_voices = MAX_OPL3_VOICES;  in snd_opl3_synth_setup()
75 	spin_lock_irqsave(&opl3->sys_timer_lock, flags);  in snd_opl3_synth_cleanup()
76 	if (opl3->sys_timer_status) {  in snd_opl3_synth_cleanup()
77 		timer_delete(&opl3->tlist);  in snd_opl3_synth_cleanup()
78 		opl3->sys_timer_status = 0;  in snd_opl3_synth_cleanup()
80 	spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);  in snd_opl3_synth_cleanup()
83 	hwdep = opl3->hwdep;  in snd_opl3_synth_cleanup()
84 	mutex_lock(&hwdep->open_mutex);  in snd_opl3_synth_cleanup()
85 	hwdep->used--;  in snd_opl3_synth_cleanup()
86 	mutex_unlock(&hwdep->open_mutex);  in snd_opl3_synth_cleanup()
87 	wake_up(&hwdep->open_wait);  in snd_opl3_synth_cleanup()
101 		opl3->voices[6].state = opl3->voices[7].state =   in snd_opl3_synth_use()
102 			opl3->voices[8].state = SNDRV_OPL3_ST_NOT_AVAIL;  in snd_opl3_synth_use()
104 		opl3->drum_reg = OPL3_PERCUSSION_ENABLE;  in snd_opl3_synth_use()
105 		opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, opl3->drum_reg);  in snd_opl3_synth_use()
107 		opl3->drum_reg = 0x00;  in snd_opl3_synth_use()
110 	if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) {  in snd_opl3_synth_use()
115 	opl3->synth_mode = SNDRV_OPL3_MODE_SEQ;  in snd_opl3_synth_use()
125 	if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM)  in snd_opl3_synth_unuse()
148 	snd_midi_process_event(&opl3_ops, ev, opl3->chset);  in snd_opl3_synth_event_input()
152 /* ------------------------------ */
158 	snd_midi_channel_free_set(opl3->chset);  in snd_opl3_synth_free_port()
167 	voices = (opl3->hardware < OPL3_HW_OPL3) ?  in snd_opl3_synth_create_port()
169 	opl3->chset = snd_midi_channel_alloc_set(16);  in snd_opl3_synth_create_port()
170 	if (opl3->chset == NULL)  in snd_opl3_synth_create_port()
171 		return -ENOMEM;  in snd_opl3_synth_create_port()
172 	opl3->chset->private_data = opl3;  in snd_opl3_synth_create_port()
182 	opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;  in snd_opl3_synth_create_port()
185 	opl3->chset->client = opl3->seq_client;  in snd_opl3_synth_create_port()
186 	opl3->chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,  in snd_opl3_synth_create_port()
196 	if (opl3->chset->port < 0) {  in snd_opl3_synth_create_port()
198 		port = opl3->chset->port;  in snd_opl3_synth_create_port()
199 		snd_midi_channel_free_set(opl3->chset);  in snd_opl3_synth_create_port()
205 /* ------------------------------ */
217 		return -EINVAL;  in snd_opl3_seq_probe()
219 	spin_lock_init(&opl3->voice_lock);  in snd_opl3_seq_probe()
221 	opl3->seq_client = -1;  in snd_opl3_seq_probe()
224 	opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;  in snd_opl3_seq_probe()
226 	client = opl3->seq_client =  in snd_opl3_seq_probe()
227 		snd_seq_create_kernel_client(opl3->card, opl3->seq_dev_num,  in snd_opl3_seq_probe()
235 		opl3->seq_client = -1;  in snd_opl3_seq_probe()
240 	timer_setup(&opl3->tlist, snd_opl3_timer_func, 0);  in snd_opl3_seq_probe()
241 	spin_lock_init(&opl3->sys_timer_lock);  in snd_opl3_seq_probe()
242 	opl3->sys_timer_status = 0;  in snd_opl3_seq_probe()
257 		return -EINVAL;  in snd_opl3_seq_remove()
262 	if (opl3->seq_client >= 0) {  in snd_opl3_seq_remove()
263 		snd_seq_delete_kernel_client(opl3->seq_client);  in snd_opl3_seq_remove()
264 		opl3->seq_client = -1;  in snd_opl3_seq_remove()