[ALSA] seq: remove struct snd_seq_client_callback
[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
55         down(&opl3->access_mutex);
56         if (opl3->used) {
57                 up(&opl3->access_mutex);
58                 return -EBUSY;
59         }
60         opl3->used++;
61         up(&opl3->access_mutex);
62
63         snd_opl3_reset(opl3);
64
65         for (idx = 0; idx < MAX_OPL3_VOICES; idx++) {
66                 opl3->voices[idx].state = SNDRV_OPL3_ST_OFF;
67                 opl3->voices[idx].time = 0;
68                 opl3->voices[idx].keyon_reg = 0x00;
69         }
70         opl3->use_time = 0;
71         opl3->connection_reg = 0x00;
72         if (opl3->hardware >= OPL3_HW_OPL3) {
73                 /* Clear 4-op connections */
74                 opl3->command(opl3, OPL3_RIGHT | OPL3_REG_CONNECTION_SELECT,
75                                  opl3->connection_reg);
76                 opl3->max_voices = MAX_OPL3_VOICES;
77         }
78         return 0;
79 }
80
81 void snd_opl3_synth_cleanup(struct snd_opl3 * opl3)
82 {
83         unsigned long flags;
84
85         /* Stop system timer */
86         spin_lock_irqsave(&opl3->sys_timer_lock, flags);
87         if (opl3->sys_timer_status) {
88                 del_timer(&opl3->tlist);
89                 opl3->sys_timer_status = 0;
90         }
91         spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
92
93         snd_opl3_reset(opl3);
94         down(&opl3->access_mutex);
95         opl3->used--;
96         up(&opl3->access_mutex);
97 }
98
99 static int snd_opl3_synth_use(void *private_data, struct snd_seq_port_subscribe * info)
100 {
101         struct snd_opl3 *opl3 = private_data;
102         int err;
103
104         if ((err = snd_opl3_synth_setup(opl3)) < 0)
105                 return err;
106
107         if (use_internal_drums) {
108                 /* Percussion mode */
109                 opl3->voices[6].state = opl3->voices[7].state = 
110                         opl3->voices[8].state = SNDRV_OPL3_ST_NOT_AVAIL;
111                 snd_opl3_load_drums(opl3);
112                 opl3->drum_reg = OPL3_PERCUSSION_ENABLE;
113                 opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, opl3->drum_reg);
114         } else {
115                 opl3->drum_reg = 0x00;
116         }
117
118         if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM) {
119                 if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
120                         return err;
121         }
122         opl3->synth_mode = SNDRV_OPL3_MODE_SEQ;
123         return 0;
124 }
125
126 static int snd_opl3_synth_unuse(void *private_data, struct snd_seq_port_subscribe * info)
127 {
128         struct snd_opl3 *opl3 = private_data;
129
130         snd_opl3_synth_cleanup(opl3);
131
132         if (info->sender.client != SNDRV_SEQ_CLIENT_SYSTEM)
133                 snd_opl3_synth_use_dec(opl3);
134         return 0;
135 }
136
137 /*
138  * MIDI emulation operators
139  */
140 struct snd_midi_op opl3_ops = {
141         .note_on =              snd_opl3_note_on,
142         .note_off =             snd_opl3_note_off,
143         .key_press =            snd_opl3_key_press,
144         .note_terminate =       snd_opl3_terminate_note,
145         .control =              snd_opl3_control,
146         .nrpn =                 snd_opl3_nrpn,
147         .sysex =                snd_opl3_sysex,
148 };
149
150 static int snd_opl3_synth_event_input(struct snd_seq_event * ev, int direct,
151                                       void *private_data, int atomic, int hop)
152 {
153         struct snd_opl3 *opl3 = private_data;
154
155         if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN &&
156             ev->type <= SNDRV_SEQ_EVENT_INSTR_CHANGE) {
157                 if (direct) {
158                         snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, ev,
159                                             opl3->seq_client, atomic, hop);
160                 }
161         } else {
162                 snd_midi_process_event(&opl3_ops, ev, opl3->chset);
163         }
164         return 0;
165 }
166
167 /* ------------------------------ */
168
169 static void snd_opl3_synth_free_port(void *private_data)
170 {
171         struct snd_opl3 *opl3 = private_data;
172
173         snd_midi_channel_free_set(opl3->chset);
174 }
175
176 static int snd_opl3_synth_create_port(struct snd_opl3 * opl3)
177 {
178         struct snd_seq_port_callback callbacks;
179         char name[32];
180         int voices, opl_ver;
181
182         voices = (opl3->hardware < OPL3_HW_OPL3) ?
183                 MAX_OPL2_VOICES : MAX_OPL3_VOICES;
184         opl3->chset = snd_midi_channel_alloc_set(16);
185         if (opl3->chset == NULL)
186                 return -ENOMEM;
187         opl3->chset->private_data = opl3;
188
189         memset(&callbacks, 0, sizeof(callbacks));
190         callbacks.owner = THIS_MODULE;
191         callbacks.use = snd_opl3_synth_use;
192         callbacks.unuse = snd_opl3_synth_unuse;
193         callbacks.event_input = snd_opl3_synth_event_input;
194         callbacks.private_free = snd_opl3_synth_free_port;
195         callbacks.private_data = opl3;
196
197         opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
198         sprintf(name, "OPL%i FM Port", opl_ver);
199
200         opl3->chset->client = opl3->seq_client;
201         opl3->chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
202                                                       SNDRV_SEQ_PORT_CAP_WRITE |
203                                                       SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
204                                                       SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
205                                                       SNDRV_SEQ_PORT_TYPE_MIDI_GM |
206                                                       SNDRV_SEQ_PORT_TYPE_SYNTH,
207                                                       16, voices,
208                                                       name);
209         if (opl3->chset->port < 0) {
210                 snd_midi_channel_free_set(opl3->chset);
211                 return opl3->chset->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;
222         struct snd_seq_client_info cinfo;
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         client = opl3->seq_client =
235                 snd_seq_create_kernel_client(opl3->card, opl3->seq_dev_num);
236         if (client < 0)
237                 return client;
238
239         /* change name of client */
240         memset(&cinfo, 0, sizeof(cinfo));
241         cinfo.client = client;
242         cinfo.type = KERNEL_CLIENT;
243         opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
244         sprintf(cinfo.name, "OPL%i FM synth", opl_ver);
245         snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, &cinfo);
246
247         snd_opl3_synth_create_port(opl3);
248
249         /* initialize instrument list */
250         opl3->ilist = snd_seq_instr_list_new();
251         if (opl3->ilist == NULL) {
252                 snd_seq_delete_kernel_client(client);
253                 opl3->seq_client = -1;
254                 return -ENOMEM;
255         }
256         opl3->ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;
257         snd_seq_fm_init(&opl3->fm_ops, NULL);
258
259         /* setup system timer */
260         init_timer(&opl3->tlist);
261         opl3->tlist.function = snd_opl3_timer_func;
262         opl3->tlist.data = (unsigned long) opl3;
263         spin_lock_init(&opl3->sys_timer_lock);
264         opl3->sys_timer_status = 0;
265
266 #ifdef CONFIG_SND_SEQUENCER_OSS
267         snd_opl3_init_seq_oss(opl3, cinfo.name);
268 #endif
269         return 0;
270 }
271
272 static int snd_opl3_seq_delete_device(struct snd_seq_device *dev)
273 {
274         struct snd_opl3 *opl3;
275
276         opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
277         if (opl3 == NULL)
278                 return -EINVAL;
279
280 #ifdef CONFIG_SND_SEQUENCER_OSS
281         snd_opl3_free_seq_oss(opl3);
282 #endif
283         if (opl3->seq_client >= 0) {
284                 snd_seq_delete_kernel_client(opl3->seq_client);
285                 opl3->seq_client = -1;
286         }
287         if (opl3->ilist)
288                 snd_seq_instr_list_free(&opl3->ilist);
289         return 0;
290 }
291
292 static int __init alsa_opl3_seq_init(void)
293 {
294         static struct snd_seq_dev_ops ops =
295         {
296                 snd_opl3_seq_new_device,
297                 snd_opl3_seq_delete_device
298         };
299
300         return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL3, &ops,
301                                               sizeof(struct snd_opl3 *));
302 }
303
304 static void __exit alsa_opl3_seq_exit(void)
305 {
306         snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_OPL3);
307 }
308
309 module_init(alsa_opl3_seq_init)
310 module_exit(alsa_opl3_seq_exit)