bitmask: remove bitmap_scnprintf_len()
[linux-2.6.git] / sound / drivers / opl3 / opl3_seq.c
1 /*
2  *  Copyright (c) by Uros Bizjak <uros@kss-loka.si>
3  *
4  *  Midi Sequencer interface routines for OPL2/OPL3/OPL4 FM
5  *
6  *  OPL2/3 FM instrument loader:
7  *   alsa-tools/seq/sbiload/
8  *
9  *   This program is free software; you can redistribute it and/or modify
10  *   it under the terms of the GNU General Public License as published by
11  *   the Free Software Foundation; either version 2 of the License, or
12  *   (at your option) any later version.
13  *
14  *   This program is distributed in the hope that it will be useful,
15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  *   GNU General Public License for more details.
18  *
19  *   You should have received a copy of the GNU General Public License
20  *   along with this program; if not, write to the Free Software
21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22  *
23  */
24
25 #include "opl3_voice.h"
26 #include <linux/init.h>
27 #include <linux/moduleparam.h>
28 #include <sound/initval.h>
29
30 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
31 MODULE_LICENSE("GPL");
32 MODULE_DESCRIPTION("ALSA driver for OPL3 FM synth");
33
34 int use_internal_drums = 0;
35 module_param(use_internal_drums, bool, 0444);
36 MODULE_PARM_DESC(use_internal_drums, "Enable internal OPL2/3 drums.");
37
38 int snd_opl3_synth_use_inc(struct snd_opl3 * opl3)
39 {
40         if (!try_module_get(opl3->card->module))
41                 return -EFAULT;
42         return 0;
43
44 }
45
46 void snd_opl3_synth_use_dec(struct snd_opl3 * opl3)
47 {
48         module_put(opl3->card->module);
49 }
50
51 int snd_opl3_synth_setup(struct snd_opl3 * opl3)
52 {
53         int idx;
54         struct snd_hwdep *hwdep = opl3->hwdep;
55
56         mutex_lock(&hwdep->open_mutex);
57         if (hwdep->used) {
58                 mutex_unlock(&hwdep->open_mutex);
59                 return -EBUSY;
60         }
61         hwdep->used++;
62         mutex_unlock(&hwdep->open_mutex);
63
64         snd_opl3_reset(opl3);
65
66         for (idx = 0; idx < MAX_OPL3_VOICES; idx++) {
67                 opl3->voices[idx].state = SNDRV_OPL3_ST_OFF;
68                 opl3->voices[idx].time = 0;
69                 opl3->voices[idx].keyon_reg = 0x00;
70         }
71         opl3->use_time = 0;
72         opl3->connection_reg = 0x00;
73         if (opl3->hardware >= OPL3_HW_OPL3) {
74                 /* Clear 4-op connections */
75                 opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT,
76                                  opl3->connection_reg);
77                 opl3->max_voices = MAX_OPL3_VOICES;
78         }
79         return 0;
80 }
81
82 void snd_opl3_synth_cleanup(struct snd_opl3 * opl3)
83 {
84         unsigned long flags;
85         struct snd_hwdep *hwdep;
86
87         /* Stop system timer */
88         spin_lock_irqsave(&opl3->sys_timer_lock, flags);
89         if (opl3->sys_timer_status) {
90                 del_timer(&opl3->tlist);
91                 opl3->sys_timer_status = 0;
92         }
93         spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
94
95         snd_opl3_reset(opl3);
96         hwdep = opl3->hwdep;
97         mutex_lock(&hwdep->open_mutex);
98         hwdep->used--;
99         mutex_unlock(&hwdep->open_mutex);
100         wake_up(&hwdep->open_wait);
101 }
102
103 static int snd_opl3_synth_use(void *private_data, struct snd_seq_port_subscribe * info)
104 {
105         struct snd_opl3 *opl3 = private_data;
106         int err;
107
108         if ((err = snd_opl3_synth_setup(opl3)) < 0)
109                 return err;
110
111         if (use_internal_drums) {
112                 /* Percussion mode */
113                 opl3->voices[6].state = opl3->voices[7].state = 
114                         opl3->voices[8].state = SNDRV_OPL3_ST_NOT_AVAIL;
115                 snd_opl3_load_drums(opl3);
116                 opl3->drum_reg = OPL3_PERCUSSION_ENABLE;
117                 opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, opl3->drum_reg);
118         } else {
119                 opl3->drum_reg = 0x00;
120         }
121
122         if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) {
123                 if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
124                         return err;
125         }
126         opl3->synth_mode = SNDRV_OPL3_MODE_SEQ;
127         return 0;
128 }
129
130 static int snd_opl3_synth_unuse(void *private_data, struct snd_seq_port_subscribe * info)
131 {
132         struct snd_opl3 *opl3 = private_data;
133
134         snd_opl3_synth_cleanup(opl3);
135
136         if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM)
137                 snd_opl3_synth_use_dec(opl3);
138         return 0;
139 }
140
141 /*
142  * MIDI emulation operators
143  */
144 struct snd_midi_op opl3_ops = {
145         .note_on =              snd_opl3_note_on,
146         .note_off =             snd_opl3_note_off,
147         .key_press =            snd_opl3_key_press,
148         .note_terminate =       snd_opl3_terminate_note,
149         .control =              snd_opl3_control,
150         .nrpn =                 snd_opl3_nrpn,
151         .sysex =                snd_opl3_sysex,
152 };
153
154 static int snd_opl3_synth_event_input(struct snd_seq_event * ev, int direct,
155                                       void *private_data, int atomic, int hop)
156 {
157         struct snd_opl3 *opl3 = private_data;
158
159         snd_midi_process_event(&opl3_ops, ev, opl3->chset);
160         return 0;
161 }
162
163 /* ------------------------------ */
164
165 static void snd_opl3_synth_free_port(void *private_data)
166 {
167         struct snd_opl3 *opl3 = private_data;
168
169         snd_midi_channel_free_set(opl3->chset);
170 }
171
172 static int snd_opl3_synth_create_port(struct snd_opl3 * opl3)
173 {
174         struct snd_seq_port_callback callbacks;
175         char name[32];
176         int voices, opl_ver;
177
178         voices = (opl3->hardware < OPL3_HW_OPL3) ?
179                 MAX_OPL2_VOICES : MAX_OPL3_VOICES;
180         opl3->chset = snd_midi_channel_alloc_set(16);
181         if (opl3->chset == NULL)
182                 return -ENOMEM;
183         opl3->chset->private_data = opl3;
184
185         memset(&callbacks, 0, sizeof(callbacks));
186         callbacks.owner = THIS_MODULE;
187         callbacks.use = snd_opl3_synth_use;
188         callbacks.unuse = snd_opl3_synth_unuse;
189         callbacks.event_input = snd_opl3_synth_event_input;
190         callbacks.private_free = snd_opl3_synth_free_port;
191         callbacks.private_data = opl3;
192
193         opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
194         sprintf(name, "OPL%i FM Port", opl_ver);
195
196         opl3->chset->client = opl3->seq_client;
197         opl3->chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
198                                                       SNDRV_SEQ_PORT_CAP_WRITE |
199                                                       SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
200                                                       SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
201                                                       SNDRV_SEQ_PORT_TYPE_MIDI_GM |
202                                                       SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
203                                                       SNDRV_SEQ_PORT_TYPE_HARDWARE |
204                                                       SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
205                                                       16, voices,
206                                                       name);
207         if (opl3->chset->port < 0) {
208                 int port;
209                 port = opl3->chset->port;
210                 snd_midi_channel_free_set(opl3->chset);
211                 return port;
212         }
213         return 0;
214 }
215
216 /* ------------------------------ */
217
218 static int snd_opl3_seq_new_device(struct snd_seq_device *dev)
219 {
220         struct snd_opl3 *opl3;
221         int client, err;
222         char name[32];
223         int opl_ver;
224
225         opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
226         if (opl3 == NULL)
227                 return -EINVAL;
228
229         spin_lock_init(&opl3->voice_lock);
230
231         opl3->seq_client = -1;
232
233         /* allocate new client */
234         opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
235         sprintf(name, "OPL%i FM synth", opl_ver);
236         client = opl3->seq_client =
237                 snd_seq_create_kernel_client(opl3->card, opl3->seq_dev_num,
238                                              name);
239         if (client < 0)
240                 return client;
241
242         if ((err = snd_opl3_synth_create_port(opl3)) < 0) {
243                 snd_seq_delete_kernel_client(client);
244                 opl3->seq_client = -1;
245                 return err;
246         }
247
248         /* setup system timer */
249         init_timer(&opl3->tlist);
250         opl3->tlist.function = snd_opl3_timer_func;
251         opl3->tlist.data = (unsigned long) opl3;
252         spin_lock_init(&opl3->sys_timer_lock);
253         opl3->sys_timer_status = 0;
254
255 #ifdef CONFIG_SND_SEQUENCER_OSS
256         snd_opl3_init_seq_oss(opl3, name);
257 #endif
258         return 0;
259 }
260
261 static int snd_opl3_seq_delete_device(struct snd_seq_device *dev)
262 {
263         struct snd_opl3 *opl3;
264
265         opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
266         if (opl3 == NULL)
267                 return -EINVAL;
268
269 #ifdef CONFIG_SND_SEQUENCER_OSS
270         snd_opl3_free_seq_oss(opl3);
271 #endif
272         if (opl3->seq_client >= 0) {
273                 snd_seq_delete_kernel_client(opl3->seq_client);
274                 opl3->seq_client = -1;
275         }
276         return 0;
277 }
278
279 static int __init alsa_opl3_seq_init(void)
280 {
281         static struct snd_seq_dev_ops ops =
282         {
283                 snd_opl3_seq_new_device,
284                 snd_opl3_seq_delete_device
285         };
286
287         return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL3, &ops,
288                                               sizeof(struct snd_opl3 *));
289 }
290
291 static void __exit alsa_opl3_seq_exit(void)
292 {
293         snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_OPL3);
294 }
295
296 module_init(alsa_opl3_seq_init)
297 module_exit(alsa_opl3_seq_exit)