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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/opl3.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'sound/oss/opl3.c')
-rw-r--r--sound/oss/opl3.c1257
1 files changed, 1257 insertions, 0 deletions
diff --git a/sound/oss/opl3.c b/sound/oss/opl3.c
new file mode 100644
index 000000000000..a31734b7842f
--- /dev/null
+++ b/sound/oss/opl3.c
@@ -0,0 +1,1257 @@
1/*
2 * sound/opl3.c
3 *
4 * A low level driver for Yamaha YM3812 and OPL-3 -chips
5 *
6 *
7 * Copyright (C) by Hannu Savolainen 1993-1997
8 *
9 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
10 * Version 2 (June 1991). See the "COPYING" file distributed with this software
11 * for more info.
12 *
13 *
14 * Changes
15 * Thomas Sailer ioctl code reworked (vmalloc/vfree removed)
16 * Alan Cox modularisation, fixed sound_mem allocs.
17 * Christoph Hellwig Adapted to module_init/module_exit
18 * Arnaldo C. de Melo get rid of check_region, use request_region for
19 * OPL4, release it on exit, some cleanups.
20 *
21 * Status
22 * Believed to work. Badly needs rewriting a bit to support multiple
23 * OPL3 devices.
24 */
25
26#include <linux/init.h>
27#include <linux/module.h>
28#include <linux/delay.h>
29
30/*
31 * Major improvements to the FM handling 30AUG92 by Rob Hooft,
32 * hooft@chem.ruu.nl
33 */
34
35#include "sound_config.h"
36
37#include "opl3.h"
38#include "opl3_hw.h"
39
40#define MAX_VOICE 18
41#define OFFS_4OP 11
42
43struct voice_info
44{
45 unsigned char keyon_byte;
46 long bender;
47 long bender_range;
48 unsigned long orig_freq;
49 unsigned long current_freq;
50 int volume;
51 int mode;
52 int panning; /* 0xffff means not set */
53};
54
55typedef struct opl_devinfo
56{
57 int base;
58 int left_io, right_io;
59 int nr_voice;
60 int lv_map[MAX_VOICE];
61
62 struct voice_info voc[MAX_VOICE];
63 struct voice_alloc_info *v_alloc;
64 struct channel_info *chn_info;
65
66 struct sbi_instrument i_map[SBFM_MAXINSTR];
67 struct sbi_instrument *act_i[MAX_VOICE];
68
69 struct synth_info fm_info;
70
71 int busy;
72 int model;
73 unsigned char cmask;
74
75 int is_opl4;
76 int *osp;
77} opl_devinfo;
78
79static struct opl_devinfo *devc = NULL;
80
81static int detected_model;
82
83static int store_instr(int instr_no, struct sbi_instrument *instr);
84static void freq_to_fnum(int freq, int *block, int *fnum);
85static void opl3_command(int io_addr, unsigned int addr, unsigned int val);
86static int opl3_kill_note(int dev, int voice, int note, int velocity);
87
88static void enter_4op_mode(void)
89{
90 int i;
91 static int v4op[MAX_VOICE] = {
92 0, 1, 2, 9, 10, 11, 6, 7, 8, 15, 16, 17
93 };
94
95 devc->cmask = 0x3f; /* Connect all possible 4 OP voice operators */
96 opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, 0x3f);
97
98 for (i = 0; i < 3; i++)
99 pv_map[i].voice_mode = 4;
100 for (i = 3; i < 6; i++)
101 pv_map[i].voice_mode = 0;
102
103 for (i = 9; i < 12; i++)
104 pv_map[i].voice_mode = 4;
105 for (i = 12; i < 15; i++)
106 pv_map[i].voice_mode = 0;
107
108 for (i = 0; i < 12; i++)
109 devc->lv_map[i] = v4op[i];
110 devc->v_alloc->max_voice = devc->nr_voice = 12;
111}
112
113static int opl3_ioctl(int dev, unsigned int cmd, void __user * arg)
114{
115 struct sbi_instrument ins;
116
117 switch (cmd) {
118 case SNDCTL_FM_LOAD_INSTR:
119 printk(KERN_WARNING "Warning: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
120 if (copy_from_user(&ins, arg, sizeof(ins)))
121 return -EFAULT;
122 if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR) {
123 printk(KERN_WARNING "FM Error: Invalid instrument number %d\n", ins.channel);
124 return -EINVAL;
125 }
126 return store_instr(ins.channel, &ins);
127
128 case SNDCTL_SYNTH_INFO:
129 devc->fm_info.nr_voices = (devc->nr_voice == 12) ? 6 : devc->nr_voice;
130 if (copy_to_user(arg, &devc->fm_info, sizeof(devc->fm_info)))
131 return -EFAULT;
132 return 0;
133
134 case SNDCTL_SYNTH_MEMAVL:
135 return 0x7fffffff;
136
137 case SNDCTL_FM_4OP_ENABLE:
138 if (devc->model == 2)
139 enter_4op_mode();
140 return 0;
141
142 default:
143 return -EINVAL;
144 }
145}
146
147int opl3_detect(int ioaddr, int *osp)
148{
149 /*
150 * This function returns 1 if the FM chip is present at the given I/O port
151 * The detection algorithm plays with the timer built in the FM chip and
152 * looks for a change in the status register.
153 *
154 * Note! The timers of the FM chip are not connected to AdLib (and compatible)
155 * boards.
156 *
157 * Note2! The chip is initialized if detected.
158 */
159
160 unsigned char stat1, signature;
161 int i;
162
163 if (devc != NULL)
164 {
165 printk(KERN_ERR "opl3: Only one OPL3 supported.\n");
166 return 0;
167 }
168
169 devc = (struct opl_devinfo *)kmalloc(sizeof(*devc), GFP_KERNEL);
170
171 if (devc == NULL)
172 {
173 printk(KERN_ERR "opl3: Can't allocate memory for the device control "
174 "structure \n ");
175 return 0;
176 }
177
178 memset(devc, 0, sizeof(*devc));
179 strcpy(devc->fm_info.name, "OPL2");
180
181 if (!request_region(ioaddr, 4, devc->fm_info.name)) {
182 printk(KERN_WARNING "opl3: I/O port 0x%x already in use\n", ioaddr);
183 goto cleanup_devc;
184 }
185
186 devc->osp = osp;
187 devc->base = ioaddr;
188
189 /* Reset timers 1 and 2 */
190 opl3_command(ioaddr, TIMER_CONTROL_REGISTER, TIMER1_MASK | TIMER2_MASK);
191
192 /* Reset the IRQ of the FM chip */
193 opl3_command(ioaddr, TIMER_CONTROL_REGISTER, IRQ_RESET);
194
195 signature = stat1 = inb(ioaddr); /* Status register */
196
197 if (signature != 0x00 && signature != 0x06 && signature != 0x02 &&
198 signature != 0x0f)
199 {
200 MDB(printk(KERN_INFO "OPL3 not detected %x\n", signature));
201 goto cleanup_region;
202 }
203
204 if (signature == 0x06) /* OPL2 */
205 {
206 detected_model = 2;
207 }
208 else if (signature == 0x00 || signature == 0x0f) /* OPL3 or OPL4 */
209 {
210 unsigned char tmp;
211
212 detected_model = 3;
213
214 /*
215 * Detect availability of OPL4 (_experimental_). Works probably
216 * only after a cold boot. In addition the OPL4 port
217 * of the chip may not be connected to the PC bus at all.
218 */
219
220 opl3_command(ioaddr + 2, OPL3_MODE_REGISTER, 0x00);
221 opl3_command(ioaddr + 2, OPL3_MODE_REGISTER, OPL3_ENABLE | OPL4_ENABLE);
222
223 if ((tmp = inb(ioaddr)) == 0x02) /* Have a OPL4 */
224 {
225 detected_model = 4;
226 }
227
228 if (request_region(ioaddr - 8, 2, "OPL4")) /* OPL4 port was free */
229 {
230 int tmp;
231
232 outb((0x02), ioaddr - 8); /* Select OPL4 ID register */
233 udelay(10);
234 tmp = inb(ioaddr - 7); /* Read it */
235 udelay(10);
236
237 if (tmp == 0x20) /* OPL4 should return 0x20 here */
238 {
239 detected_model = 4;
240 outb((0xF8), ioaddr - 8); /* Select OPL4 FM mixer control */
241 udelay(10);
242 outb((0x1B), ioaddr - 7); /* Write value */
243 udelay(10);
244 }
245 else
246 { /* release OPL4 port */
247 release_region(ioaddr - 8, 2);
248 detected_model = 3;
249 }
250 }
251 opl3_command(ioaddr + 2, OPL3_MODE_REGISTER, 0);
252 }
253 for (i = 0; i < 9; i++)
254 opl3_command(ioaddr, KEYON_BLOCK + i, 0); /*
255 * Note off
256 */
257
258 opl3_command(ioaddr, TEST_REGISTER, ENABLE_WAVE_SELECT);
259 opl3_command(ioaddr, PERCOSSION_REGISTER, 0x00); /*
260 * Melodic mode.
261 */
262 return 1;
263cleanup_region:
264 release_region(ioaddr, 4);
265cleanup_devc:
266 kfree(devc);
267 devc = NULL;
268 return 0;
269}
270
271static int opl3_kill_note (int devno, int voice, int note, int velocity)
272{
273 struct physical_voice_info *map;
274
275 if (voice < 0 || voice >= devc->nr_voice)
276 return 0;
277
278 devc->v_alloc->map[voice] = 0;
279
280 map = &pv_map[devc->lv_map[voice]];
281 DEB(printk("Kill note %d\n", voice));
282
283 if (map->voice_mode == 0)
284 return 0;
285
286 opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, devc->voc[voice].keyon_byte & ~0x20);
287 devc->voc[voice].keyon_byte = 0;
288 devc->voc[voice].bender = 0;
289 devc->voc[voice].volume = 64;
290 devc->voc[voice].panning = 0xffff; /* Not set */
291 devc->voc[voice].bender_range = 200;
292 devc->voc[voice].orig_freq = 0;
293 devc->voc[voice].current_freq = 0;
294 devc->voc[voice].mode = 0;
295 return 0;
296}
297
298#define HIHAT 0
299#define CYMBAL 1
300#define TOMTOM 2
301#define SNARE 3
302#define BDRUM 4
303#define UNDEFINED TOMTOM
304#define DEFAULT TOMTOM
305
306static int store_instr(int instr_no, struct sbi_instrument *instr)
307{
308 if (instr->key != FM_PATCH && (instr->key != OPL3_PATCH || devc->model != 2))
309 printk(KERN_WARNING "FM warning: Invalid patch format field (key) 0x%x\n", instr->key);
310 memcpy((char *) &(devc->i_map[instr_no]), (char *) instr, sizeof(*instr));
311 return 0;
312}
313
314static int opl3_set_instr (int dev, int voice, int instr_no)
315{
316 if (voice < 0 || voice >= devc->nr_voice)
317 return 0;
318 if (instr_no < 0 || instr_no >= SBFM_MAXINSTR)
319 instr_no = 0; /* Acoustic piano (usually) */
320
321 devc->act_i[voice] = &devc->i_map[instr_no];
322 return 0;
323}
324
325/*
326 * The next table looks magical, but it certainly is not. Its values have
327 * been calculated as table[i]=8*log(i/64)/log(2) with an obvious exception
328 * for i=0. This log-table converts a linear volume-scaling (0..127) to a
329 * logarithmic scaling as present in the FM-synthesizer chips. so : Volume
330 * 64 = 0 db = relative volume 0 and: Volume 32 = -6 db = relative
331 * volume -8 it was implemented as a table because it is only 128 bytes and
332 * it saves a lot of log() calculations. (RH)
333 */
334
335static char fm_volume_table[128] =
336{
337 -64, -48, -40, -35, -32, -29, -27, -26,
338 -24, -23, -21, -20, -19, -18, -18, -17,
339 -16, -15, -15, -14, -13, -13, -12, -12,
340 -11, -11, -10, -10, -10, -9, -9, -8,
341 -8, -8, -7, -7, -7, -6, -6, -6,
342 -5, -5, -5, -5, -4, -4, -4, -4,
343 -3, -3, -3, -3, -2, -2, -2, -2,
344 -2, -1, -1, -1, -1, 0, 0, 0,
345 0, 0, 0, 1, 1, 1, 1, 1,
346 1, 2, 2, 2, 2, 2, 2, 2,
347 3, 3, 3, 3, 3, 3, 3, 4,
348 4, 4, 4, 4, 4, 4, 4, 5,
349 5, 5, 5, 5, 5, 5, 5, 5,
350 6, 6, 6, 6, 6, 6, 6, 6,
351 6, 7, 7, 7, 7, 7, 7, 7,
352 7, 7, 7, 8, 8, 8, 8, 8
353};
354
355static void calc_vol(unsigned char *regbyte, int volume, int main_vol)
356{
357 int level = (~*regbyte & 0x3f);
358
359 if (main_vol > 127)
360 main_vol = 127;
361 volume = (volume * main_vol) / 127;
362
363 if (level)
364 level += fm_volume_table[volume];
365
366 if (level > 0x3f)
367 level = 0x3f;
368 if (level < 0)
369 level = 0;
370
371 *regbyte = (*regbyte & 0xc0) | (~level & 0x3f);
372}
373
374static void set_voice_volume(int voice, int volume, int main_vol)
375{
376 unsigned char vol1, vol2, vol3, vol4;
377 struct sbi_instrument *instr;
378 struct physical_voice_info *map;
379
380 if (voice < 0 || voice >= devc->nr_voice)
381 return;
382
383 map = &pv_map[devc->lv_map[voice]];
384 instr = devc->act_i[voice];
385
386 if (!instr)
387 instr = &devc->i_map[0];
388
389 if (instr->channel < 0)
390 return;
391
392 if (devc->voc[voice].mode == 0)
393 return;
394
395 if (devc->voc[voice].mode == 2)
396 {
397 vol1 = instr->operators[2];
398 vol2 = instr->operators[3];
399 if ((instr->operators[10] & 0x01))
400 {
401 calc_vol(&vol1, volume, main_vol);
402 calc_vol(&vol2, volume, main_vol);
403 }
404 else
405 {
406 calc_vol(&vol2, volume, main_vol);
407 }
408 opl3_command(map->ioaddr, KSL_LEVEL + map->op[0], vol1);
409 opl3_command(map->ioaddr, KSL_LEVEL + map->op[1], vol2);
410 }
411 else
412 { /*
413 * 4 OP voice
414 */
415 int connection;
416
417 vol1 = instr->operators[2];
418 vol2 = instr->operators[3];
419 vol3 = instr->operators[OFFS_4OP + 2];
420 vol4 = instr->operators[OFFS_4OP + 3];
421
422 /*
423 * The connection method for 4 OP devc->voc is defined by the rightmost
424 * bits at the offsets 10 and 10+OFFS_4OP
425 */
426
427 connection = ((instr->operators[10] & 0x01) << 1) | (instr->operators[10 + OFFS_4OP] & 0x01);
428
429 switch (connection)
430 {
431 case 0:
432 calc_vol(&vol4, volume, main_vol);
433 break;
434
435 case 1:
436 calc_vol(&vol2, volume, main_vol);
437 calc_vol(&vol4, volume, main_vol);
438 break;
439
440 case 2:
441 calc_vol(&vol1, volume, main_vol);
442 calc_vol(&vol4, volume, main_vol);
443 break;
444
445 case 3:
446 calc_vol(&vol1, volume, main_vol);
447 calc_vol(&vol3, volume, main_vol);
448 calc_vol(&vol4, volume, main_vol);
449 break;
450
451 default:
452 ;
453 }
454 opl3_command(map->ioaddr, KSL_LEVEL + map->op[0], vol1);
455 opl3_command(map->ioaddr, KSL_LEVEL + map->op[1], vol2);
456 opl3_command(map->ioaddr, KSL_LEVEL + map->op[2], vol3);
457 opl3_command(map->ioaddr, KSL_LEVEL + map->op[3], vol4);
458 }
459}
460
461static int opl3_start_note (int dev, int voice, int note, int volume)
462{
463 unsigned char data, fpc;
464 int block, fnum, freq, voice_mode, pan;
465 struct sbi_instrument *instr;
466 struct physical_voice_info *map;
467
468 if (voice < 0 || voice >= devc->nr_voice)
469 return 0;
470
471 map = &pv_map[devc->lv_map[voice]];
472 pan = devc->voc[voice].panning;
473
474 if (map->voice_mode == 0)
475 return 0;
476
477 if (note == 255) /*
478 * Just change the volume
479 */
480 {
481 set_voice_volume(voice, volume, devc->voc[voice].volume);
482 return 0;
483 }
484
485 /*
486 * Kill previous note before playing
487 */
488
489 opl3_command(map->ioaddr, KSL_LEVEL + map->op[1], 0xff); /*
490 * Carrier
491 * volume to
492 * min
493 */
494 opl3_command(map->ioaddr, KSL_LEVEL + map->op[0], 0xff); /*
495 * Modulator
496 * volume to
497 */
498
499 if (map->voice_mode == 4)
500 {
501 opl3_command(map->ioaddr, KSL_LEVEL + map->op[2], 0xff);
502 opl3_command(map->ioaddr, KSL_LEVEL + map->op[3], 0xff);
503 }
504
505 opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, 0x00); /*
506 * Note
507 * off
508 */
509
510 instr = devc->act_i[voice];
511
512 if (!instr)
513 instr = &devc->i_map[0];
514
515 if (instr->channel < 0)
516 {
517 printk(KERN_WARNING "opl3: Initializing voice %d with undefined instrument\n", voice);
518 return 0;
519 }
520
521 if (map->voice_mode == 2 && instr->key == OPL3_PATCH)
522 return 0; /*
523 * Cannot play
524 */
525
526 voice_mode = map->voice_mode;
527
528 if (voice_mode == 4)
529 {
530 int voice_shift;
531
532 voice_shift = (map->ioaddr == devc->left_io) ? 0 : 3;
533 voice_shift += map->voice_num;
534
535 if (instr->key != OPL3_PATCH) /*
536 * Just 2 OP patch
537 */
538 {
539 voice_mode = 2;
540 devc->cmask &= ~(1 << voice_shift);
541 }
542 else
543 {
544 devc->cmask |= (1 << voice_shift);
545 }
546
547 opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, devc->cmask);
548 }
549
550 /*
551 * Set Sound Characteristics
552 */
553
554 opl3_command(map->ioaddr, AM_VIB + map->op[0], instr->operators[0]);
555 opl3_command(map->ioaddr, AM_VIB + map->op[1], instr->operators[1]);
556
557 /*
558 * Set Attack/Decay
559 */
560
561 opl3_command(map->ioaddr, ATTACK_DECAY + map->op[0], instr->operators[4]);
562 opl3_command(map->ioaddr, ATTACK_DECAY + map->op[1], instr->operators[5]);
563
564 /*
565 * Set Sustain/Release
566 */
567
568 opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[0], instr->operators[6]);
569 opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[1], instr->operators[7]);
570
571 /*
572 * Set Wave Select
573 */
574
575 opl3_command(map->ioaddr, WAVE_SELECT + map->op[0], instr->operators[8]);
576 opl3_command(map->ioaddr, WAVE_SELECT + map->op[1], instr->operators[9]);
577
578 /*
579 * Set Feedback/Connection
580 */
581
582 fpc = instr->operators[10];
583
584 if (pan != 0xffff)
585 {
586 fpc &= ~STEREO_BITS;
587 if (pan < -64)
588 fpc |= VOICE_TO_LEFT;
589 else
590 if (pan > 64)
591 fpc |= VOICE_TO_RIGHT;
592 else
593 fpc |= (VOICE_TO_LEFT | VOICE_TO_RIGHT);
594 }
595
596 if (!(fpc & 0x30))
597 fpc |= 0x30; /*
598 * Ensure that at least one chn is enabled
599 */
600 opl3_command(map->ioaddr, FEEDBACK_CONNECTION + map->voice_num, fpc);
601
602 /*
603 * If the voice is a 4 OP one, initialize the operators 3 and 4 also
604 */
605
606 if (voice_mode == 4)
607 {
608 /*
609 * Set Sound Characteristics
610 */
611
612 opl3_command(map->ioaddr, AM_VIB + map->op[2], instr->operators[OFFS_4OP + 0]);
613 opl3_command(map->ioaddr, AM_VIB + map->op[3], instr->operators[OFFS_4OP + 1]);
614
615 /*
616 * Set Attack/Decay
617 */
618
619 opl3_command(map->ioaddr, ATTACK_DECAY + map->op[2], instr->operators[OFFS_4OP + 4]);
620 opl3_command(map->ioaddr, ATTACK_DECAY + map->op[3], instr->operators[OFFS_4OP + 5]);
621
622 /*
623 * Set Sustain/Release
624 */
625
626 opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[2], instr->operators[OFFS_4OP + 6]);
627 opl3_command(map->ioaddr, SUSTAIN_RELEASE + map->op[3], instr->operators[OFFS_4OP + 7]);
628
629 /*
630 * Set Wave Select
631 */
632
633 opl3_command(map->ioaddr, WAVE_SELECT + map->op[2], instr->operators[OFFS_4OP + 8]);
634 opl3_command(map->ioaddr, WAVE_SELECT + map->op[3], instr->operators[OFFS_4OP + 9]);
635
636 /*
637 * Set Feedback/Connection
638 */
639
640 fpc = instr->operators[OFFS_4OP + 10];
641 if (!(fpc & 0x30))
642 fpc |= 0x30; /*
643 * Ensure that at least one chn is enabled
644 */
645 opl3_command(map->ioaddr, FEEDBACK_CONNECTION + map->voice_num + 3, fpc);
646 }
647
648 devc->voc[voice].mode = voice_mode;
649 set_voice_volume(voice, volume, devc->voc[voice].volume);
650
651 freq = devc->voc[voice].orig_freq = note_to_freq(note) / 1000;
652
653 /*
654 * Since the pitch bender may have been set before playing the note, we
655 * have to calculate the bending now.
656 */
657
658 freq = compute_finetune(devc->voc[voice].orig_freq, devc->voc[voice].bender, devc->voc[voice].bender_range, 0);
659 devc->voc[voice].current_freq = freq;
660
661 freq_to_fnum(freq, &block, &fnum);
662
663 /*
664 * Play note
665 */
666
667 data = fnum & 0xff; /*
668 * Least significant bits of fnumber
669 */
670 opl3_command(map->ioaddr, FNUM_LOW + map->voice_num, data);
671
672 data = 0x20 | ((block & 0x7) << 2) | ((fnum >> 8) & 0x3);
673 devc->voc[voice].keyon_byte = data;
674 opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, data);
675 if (voice_mode == 4)
676 opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num + 3, data);
677
678 return 0;
679}
680
681static void freq_to_fnum (int freq, int *block, int *fnum)
682{
683 int f, octave;
684
685 /*
686 * Converts the note frequency to block and fnum values for the FM chip
687 */
688 /*
689 * First try to compute the block -value (octave) where the note belongs
690 */
691
692 f = freq;
693
694 octave = 5;
695
696 if (f == 0)
697 octave = 0;
698 else if (f < 261)
699 {
700 while (f < 261)
701 {
702 octave--;
703 f <<= 1;
704 }
705 }
706 else if (f > 493)
707 {
708 while (f > 493)
709 {
710 octave++;
711 f >>= 1;
712 }
713 }
714
715 if (octave > 7)
716 octave = 7;
717
718 *fnum = freq * (1 << (20 - octave)) / 49716;
719 *block = octave;
720}
721
722static void opl3_command (int io_addr, unsigned int addr, unsigned int val)
723{
724 int i;
725
726 /*
727 * The original 2-OP synth requires a quite long delay after writing to a
728 * register. The OPL-3 survives with just two INBs
729 */
730
731 outb(((unsigned char) (addr & 0xff)), io_addr);
732
733 if (devc->model != 2)
734 udelay(10);
735 else
736 for (i = 0; i < 2; i++)
737 inb(io_addr);
738
739 outb(((unsigned char) (val & 0xff)), io_addr + 1);
740
741 if (devc->model != 2)
742 udelay(30);
743 else
744 for (i = 0; i < 2; i++)
745 inb(io_addr);
746}
747
748static void opl3_reset(int devno)
749{
750 int i;
751
752 for (i = 0; i < 18; i++)
753 devc->lv_map[i] = i;
754
755 for (i = 0; i < devc->nr_voice; i++)
756 {
757 opl3_command(pv_map[devc->lv_map[i]].ioaddr,
758 KSL_LEVEL + pv_map[devc->lv_map[i]].op[0], 0xff);
759
760 opl3_command(pv_map[devc->lv_map[i]].ioaddr,
761 KSL_LEVEL + pv_map[devc->lv_map[i]].op[1], 0xff);
762
763 if (pv_map[devc->lv_map[i]].voice_mode == 4)
764 {
765 opl3_command(pv_map[devc->lv_map[i]].ioaddr,
766 KSL_LEVEL + pv_map[devc->lv_map[i]].op[2], 0xff);
767
768 opl3_command(pv_map[devc->lv_map[i]].ioaddr,
769 KSL_LEVEL + pv_map[devc->lv_map[i]].op[3], 0xff);
770 }
771
772 opl3_kill_note(devno, i, 0, 64);
773 }
774
775 if (devc->model == 2)
776 {
777 devc->v_alloc->max_voice = devc->nr_voice = 18;
778
779 for (i = 0; i < 18; i++)
780 pv_map[i].voice_mode = 2;
781
782 }
783}
784
785static int opl3_open(int dev, int mode)
786{
787 int i;
788
789 if (devc->busy)
790 return -EBUSY;
791 devc->busy = 1;
792
793 devc->v_alloc->max_voice = devc->nr_voice = (devc->model == 2) ? 18 : 9;
794 devc->v_alloc->timestamp = 0;
795
796 for (i = 0; i < 18; i++)
797 {
798 devc->v_alloc->map[i] = 0;
799 devc->v_alloc->alloc_times[i] = 0;
800 }
801
802 devc->cmask = 0x00; /*
803 * Just 2 OP mode
804 */
805 if (devc->model == 2)
806 opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, devc->cmask);
807 return 0;
808}
809
810static void opl3_close(int dev)
811{
812 devc->busy = 0;
813 devc->v_alloc->max_voice = devc->nr_voice = (devc->model == 2) ? 18 : 9;
814
815 devc->fm_info.nr_drums = 0;
816 devc->fm_info.perc_mode = 0;
817
818 opl3_reset(dev);
819}
820
821static void opl3_hw_control(int dev, unsigned char *event)
822{
823}
824
825static int opl3_load_patch(int dev, int format, const char __user *addr,
826 int offs, int count, int pmgr_flag)
827{
828 struct sbi_instrument ins;
829
830 if (count <sizeof(ins))
831 {
832 printk(KERN_WARNING "FM Error: Patch record too short\n");
833 return -EINVAL;
834 }
835
836 /*
837 * What the fuck is going on here? We leave junk in the beginning
838 * of ins and then check the field pretty close to that beginning?
839 */
840 if(copy_from_user(&((char *) &ins)[offs], addr + offs, sizeof(ins) - offs))
841 return -EFAULT;
842
843 if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR)
844 {
845 printk(KERN_WARNING "FM Error: Invalid instrument number %d\n", ins.channel);
846 return -EINVAL;
847 }
848 ins.key = format;
849
850 return store_instr(ins.channel, &ins);
851}
852
853static void opl3_panning(int dev, int voice, int value)
854{
855 devc->voc[voice].panning = value;
856}
857
858static void opl3_volume_method(int dev, int mode)
859{
860}
861
862#define SET_VIBRATO(cell) { \
863 tmp = instr->operators[(cell-1)+(((cell-1)/2)*OFFS_4OP)]; \
864 if (pressure > 110) \
865 tmp |= 0x40; /* Vibrato on */ \
866 opl3_command (map->ioaddr, AM_VIB + map->op[cell-1], tmp);}
867
868static void opl3_aftertouch(int dev, int voice, int pressure)
869{
870 int tmp;
871 struct sbi_instrument *instr;
872 struct physical_voice_info *map;
873
874 if (voice < 0 || voice >= devc->nr_voice)
875 return;
876
877 map = &pv_map[devc->lv_map[voice]];
878
879 DEB(printk("Aftertouch %d\n", voice));
880
881 if (map->voice_mode == 0)
882 return;
883
884 /*
885 * Adjust the amount of vibrato depending the pressure
886 */
887
888 instr = devc->act_i[voice];
889
890 if (!instr)
891 instr = &devc->i_map[0];
892
893 if (devc->voc[voice].mode == 4)
894 {
895 int connection = ((instr->operators[10] & 0x01) << 1) | (instr->operators[10 + OFFS_4OP] & 0x01);
896
897 switch (connection)
898 {
899 case 0:
900 SET_VIBRATO(4);
901 break;
902
903 case 1:
904 SET_VIBRATO(2);
905 SET_VIBRATO(4);
906 break;
907
908 case 2:
909 SET_VIBRATO(1);
910 SET_VIBRATO(4);
911 break;
912
913 case 3:
914 SET_VIBRATO(1);
915 SET_VIBRATO(3);
916 SET_VIBRATO(4);
917 break;
918
919 }
920 /*
921 * Not implemented yet
922 */
923 }
924 else
925 {
926 SET_VIBRATO(1);
927
928 if ((instr->operators[10] & 0x01)) /*
929 * Additive synthesis
930 */
931 SET_VIBRATO(2);
932 }
933}
934
935#undef SET_VIBRATO
936
937static void bend_pitch(int dev, int voice, int value)
938{
939 unsigned char data;
940 int block, fnum, freq;
941 struct physical_voice_info *map;
942
943 map = &pv_map[devc->lv_map[voice]];
944
945 if (map->voice_mode == 0)
946 return;
947
948 devc->voc[voice].bender = value;
949 if (!value)
950 return;
951 if (!(devc->voc[voice].keyon_byte & 0x20))
952 return; /*
953 * Not keyed on
954 */
955
956 freq = compute_finetune(devc->voc[voice].orig_freq, devc->voc[voice].bender, devc->voc[voice].bender_range, 0);
957 devc->voc[voice].current_freq = freq;
958
959 freq_to_fnum(freq, &block, &fnum);
960
961 data = fnum & 0xff; /*
962 * Least significant bits of fnumber
963 */
964 opl3_command(map->ioaddr, FNUM_LOW + map->voice_num, data);
965
966 data = 0x20 | ((block & 0x7) << 2) | ((fnum >> 8) & 0x3);
967 devc->voc[voice].keyon_byte = data;
968 opl3_command(map->ioaddr, KEYON_BLOCK + map->voice_num, data);
969}
970
971static void opl3_controller (int dev, int voice, int ctrl_num, int value)
972{
973 if (voice < 0 || voice >= devc->nr_voice)
974 return;
975
976 switch (ctrl_num)
977 {
978 case CTRL_PITCH_BENDER:
979 bend_pitch(dev, voice, value);
980 break;
981
982 case CTRL_PITCH_BENDER_RANGE:
983 devc->voc[voice].bender_range = value;
984 break;
985
986 case CTL_MAIN_VOLUME:
987 devc->voc[voice].volume = value / 128;
988 break;
989
990 case CTL_PAN:
991 devc->voc[voice].panning = (value * 2) - 128;
992 break;
993 }
994}
995
996static void opl3_bender(int dev, int voice, int value)
997{
998 if (voice < 0 || voice >= devc->nr_voice)
999 return;
1000
1001 bend_pitch(dev, voice, value - 8192);
1002}
1003
1004static int opl3_alloc_voice(int dev, int chn, int note, struct voice_alloc_info *alloc)
1005{
1006 int i, p, best, first, avail, best_time = 0x7fffffff;
1007 struct sbi_instrument *instr;
1008 int is4op;
1009 int instr_no;
1010
1011 if (chn < 0 || chn > 15)
1012 instr_no = 0;
1013 else
1014 instr_no = devc->chn_info[chn].pgm_num;
1015
1016 instr = &devc->i_map[instr_no];
1017 if (instr->channel < 0 || /* Instrument not loaded */
1018 devc->nr_voice != 12) /* Not in 4 OP mode */
1019 is4op = 0;
1020 else if (devc->nr_voice == 12) /* 4 OP mode */
1021 is4op = (instr->key == OPL3_PATCH);
1022 else
1023 is4op = 0;
1024
1025 if (is4op)
1026 {
1027 first = p = 0;
1028 avail = 6;
1029 }
1030 else
1031 {
1032 if (devc->nr_voice == 12) /* 4 OP mode. Use the '2 OP only' operators first */
1033 first = p = 6;
1034 else
1035 first = p = 0;
1036 avail = devc->nr_voice;
1037 }
1038
1039 /*
1040 * Now try to find a free voice
1041 */
1042 best = first;
1043
1044 for (i = 0; i < avail; i++)
1045 {
1046 if (alloc->map[p] == 0)
1047 {
1048 return p;
1049 }
1050 if (alloc->alloc_times[p] < best_time) /* Find oldest playing note */
1051 {
1052 best_time = alloc->alloc_times[p];
1053 best = p;
1054 }
1055 p = (p + 1) % avail;
1056 }
1057
1058 /*
1059 * Insert some kind of priority mechanism here.
1060 */
1061
1062 if (best < 0)
1063 best = 0;
1064 if (best > devc->nr_voice)
1065 best -= devc->nr_voice;
1066
1067 return best; /* All devc->voc in use. Select the first one. */
1068}
1069
1070static void opl3_setup_voice(int dev, int voice, int chn)
1071{
1072 struct channel_info *info =
1073 &synth_devs[dev]->chn_info[chn];
1074
1075 opl3_set_instr(dev, voice, info->pgm_num);
1076
1077 devc->voc[voice].bender = 0;
1078 devc->voc[voice].bender_range = info->bender_range;
1079 devc->voc[voice].volume = info->controllers[CTL_MAIN_VOLUME];
1080 devc->voc[voice].panning = (info->controllers[CTL_PAN] * 2) - 128;
1081}
1082
1083static struct synth_operations opl3_operations =
1084{
1085 .owner = THIS_MODULE,
1086 .id = "OPL",
1087 .info = NULL,
1088 .midi_dev = 0,
1089 .synth_type = SYNTH_TYPE_FM,
1090 .synth_subtype = FM_TYPE_ADLIB,
1091 .open = opl3_open,
1092 .close = opl3_close,
1093 .ioctl = opl3_ioctl,
1094 .kill_note = opl3_kill_note,
1095 .start_note = opl3_start_note,
1096 .set_instr = opl3_set_instr,
1097 .reset = opl3_reset,
1098 .hw_control = opl3_hw_control,
1099 .load_patch = opl3_load_patch,
1100 .aftertouch = opl3_aftertouch,
1101 .controller = opl3_controller,
1102 .panning = opl3_panning,
1103 .volume_method = opl3_volume_method,
1104 .bender = opl3_bender,
1105 .alloc_voice = opl3_alloc_voice,
1106 .setup_voice = opl3_setup_voice
1107};
1108
1109int opl3_init(int ioaddr, int *osp, struct module *owner)
1110{
1111 int i;
1112 int me;
1113
1114 if (devc == NULL)
1115 {
1116 printk(KERN_ERR "opl3: Device control structure not initialized.\n");
1117 return -1;
1118 }
1119
1120 if ((me = sound_alloc_synthdev()) == -1)
1121 {
1122 printk(KERN_WARNING "opl3: Too many synthesizers\n");
1123 return -1;
1124 }
1125
1126 devc->nr_voice = 9;
1127
1128 devc->fm_info.device = 0;
1129 devc->fm_info.synth_type = SYNTH_TYPE_FM;
1130 devc->fm_info.synth_subtype = FM_TYPE_ADLIB;
1131 devc->fm_info.perc_mode = 0;
1132 devc->fm_info.nr_voices = 9;
1133 devc->fm_info.nr_drums = 0;
1134 devc->fm_info.instr_bank_size = SBFM_MAXINSTR;
1135 devc->fm_info.capabilities = 0;
1136 devc->left_io = ioaddr;
1137 devc->right_io = ioaddr + 2;
1138
1139 if (detected_model <= 2)
1140 devc->model = 1;
1141 else
1142 {
1143 devc->model = 2;
1144 if (detected_model == 4)
1145 devc->is_opl4 = 1;
1146 }
1147
1148 opl3_operations.info = &devc->fm_info;
1149
1150 synth_devs[me] = &opl3_operations;
1151
1152 if (owner)
1153 synth_devs[me]->owner = owner;
1154
1155 sequencer_init();
1156 devc->v_alloc = &opl3_operations.alloc;
1157 devc->chn_info = &opl3_operations.chn_info[0];
1158
1159 if (devc->model == 2)
1160 {
1161 if (devc->is_opl4)
1162 strcpy(devc->fm_info.name, "Yamaha OPL4/OPL3 FM");
1163 else
1164 strcpy(devc->fm_info.name, "Yamaha OPL3");
1165
1166 devc->v_alloc->max_voice = devc->nr_voice = 18;
1167 devc->fm_info.nr_drums = 0;
1168 devc->fm_info.synth_subtype = FM_TYPE_OPL3;
1169 devc->fm_info.capabilities |= SYNTH_CAP_OPL3;
1170
1171 for (i = 0; i < 18; i++)
1172 {
1173 if (pv_map[i].ioaddr == USE_LEFT)
1174 pv_map[i].ioaddr = devc->left_io;
1175 else
1176 pv_map[i].ioaddr = devc->right_io;
1177 }
1178 opl3_command(devc->right_io, OPL3_MODE_REGISTER, OPL3_ENABLE);
1179 opl3_command(devc->right_io, CONNECTION_SELECT_REGISTER, 0x00);
1180 }
1181 else
1182 {
1183 strcpy(devc->fm_info.name, "Yamaha OPL2");
1184 devc->v_alloc->max_voice = devc->nr_voice = 9;
1185 devc->fm_info.nr_drums = 0;
1186
1187 for (i = 0; i < 18; i++)
1188 pv_map[i].ioaddr = devc->left_io;
1189 };
1190 conf_printf2(devc->fm_info.name, ioaddr, 0, -1, -1);
1191
1192 for (i = 0; i < SBFM_MAXINSTR; i++)
1193 devc->i_map[i].channel = -1;
1194
1195 return me;
1196}
1197
1198EXPORT_SYMBOL(opl3_init);
1199EXPORT_SYMBOL(opl3_detect);
1200
1201static int me;
1202
1203static int io = -1;
1204
1205module_param(io, int, 0);
1206
1207static int __init init_opl3 (void)
1208{
1209 printk(KERN_INFO "YM3812 and OPL-3 driver Copyright (C) by Hannu Savolainen, Rob Hooft 1993-1996\n");
1210
1211 if (io != -1) /* User loading pure OPL3 module */
1212 {
1213 if (!opl3_detect(io, NULL))
1214 {
1215 return -ENODEV;
1216 }
1217
1218 me = opl3_init(io, NULL, THIS_MODULE);
1219 }
1220
1221 return 0;
1222}
1223
1224static void __exit cleanup_opl3(void)
1225{
1226 if (devc && io != -1)
1227 {
1228 if (devc->base) {
1229 release_region(devc->base,4);
1230 if (devc->is_opl4)
1231 release_region(devc->base - 8, 2);
1232 }
1233 kfree(devc);
1234 devc = NULL;
1235 sound_unload_synthdev(me);
1236 }
1237}
1238
1239module_init(init_opl3);
1240module_exit(cleanup_opl3);
1241
1242#ifndef MODULE
1243static int __init setup_opl3(char *str)
1244{
1245 /* io */
1246 int ints[2];
1247
1248 str = get_options(str, ARRAY_SIZE(ints), ints);
1249
1250 io = ints[1];
1251
1252 return 1;
1253}
1254
1255__setup("opl3=", setup_opl3);
1256#endif
1257MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-08 00:50:08 -0500