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Linux 2.6.31.6
[linux-2.6/verdex.git] / sound / pci / emu10k1 / emu10k1_callback.c
blob7ef949d99a50a551d2e81b85175e01d96fa18728
1 /*
2 * synth callback routines for Emu10k1
3 *
4 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include "emu10k1_synth_local.h"
22 #include <sound/asoundef.h>
23
24 /* voice status */
25 enum {
26 V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END
27 };
28
29 /* Keeps track of what we are finding */
30 struct best_voice {
31 unsigned int time;
32 int voice;
33 };
34
35 /*
36 * prototypes
37 */
38 static void lookup_voices(struct snd_emux *emux, struct snd_emu10k1 *hw,
39 struct best_voice *best, int active_only);
40 static struct snd_emux_voice *get_voice(struct snd_emux *emux,
41 struct snd_emux_port *port);
42 static int start_voice(struct snd_emux_voice *vp);
43 static void trigger_voice(struct snd_emux_voice *vp);
44 static void release_voice(struct snd_emux_voice *vp);
45 static void update_voice(struct snd_emux_voice *vp, int update);
46 static void terminate_voice(struct snd_emux_voice *vp);
47 static void free_voice(struct snd_emux_voice *vp);
48 static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
49 static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
50 static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp);
51
52 /*
53 * Ensure a value is between two points
54 * macro evaluates its args more than once, so changed to upper-case.
55 */
56 #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0)
57 #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0)
58
59
60 /*
61 * set up operators
62 */
63 static struct snd_emux_operators emu10k1_ops = {
64 .owner = THIS_MODULE,
65 .get_voice = get_voice,
66 .prepare = start_voice,
67 .trigger = trigger_voice,
68 .release = release_voice,
69 .update = update_voice,
70 .terminate = terminate_voice,
71 .free_voice = free_voice,
72 .sample_new = snd_emu10k1_sample_new,
73 .sample_free = snd_emu10k1_sample_free,
74 };
75
76 void
77 snd_emu10k1_ops_setup(struct snd_emux *emux)
78 {
79 emux->ops = emu10k1_ops;
80 }
81
82
83 /*
84 * get more voice for pcm
85 *
86 * terminate most inactive voice and give it as a pcm voice.
87 */
88 int
89 snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw)
90 {
91 struct snd_emux *emu;
92 struct snd_emux_voice *vp;
93 struct best_voice best[V_END];
94 unsigned long flags;
95 int i;
96
97 emu = hw->synth;
98
99 spin_lock_irqsave(&emu->voice_lock, flags);
100 lookup_voices(emu, hw, best, 1); /* no OFF voices */
101 for (i = 0; i < V_END; i++) {
102 if (best[i].voice >= 0) {
103 int ch;
104 vp = &emu->voices[best[i].voice];
105 if ((ch = vp->ch) < 0) {
106 /*
107 printk(KERN_WARNING
108 "synth_get_voice: ch < 0 (%d) ??", i);
109 */
110 continue;
111 }
112 vp->emu->num_voices--;
113 vp->ch = -1;
114 vp->state = SNDRV_EMUX_ST_OFF;
115 spin_unlock_irqrestore(&emu->voice_lock, flags);
116 return ch;
117 }
118 }
119 spin_unlock_irqrestore(&emu->voice_lock, flags);
120
121 /* not found */
122 return -ENOMEM;
123 }
124
125
126 /*
127 * turn off the voice (not terminated)
128 */
129 static void
130 release_voice(struct snd_emux_voice *vp)
131 {
132 int dcysusv;
133 struct snd_emu10k1 *hw;
134
135 hw = vp->hw;
136 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease;
137 snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv);
138 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK;
139 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv);
140 }
141
142
143 /*
144 * terminate the voice
145 */
146 static void
147 terminate_voice(struct snd_emux_voice *vp)
148 {
149 struct snd_emu10k1 *hw;
150
151 if (snd_BUG_ON(!vp))
152 return;
153 hw = vp->hw;
154 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK);
155 if (vp->block) {
156 struct snd_emu10k1_memblk *emem;
157 emem = (struct snd_emu10k1_memblk *)vp->block;
158 if (emem->map_locked > 0)
159 emem->map_locked--;
160 }
161 }
162
163 /*
164 * release the voice to system
165 */
166 static void
167 free_voice(struct snd_emux_voice *vp)
168 {
169 struct snd_emu10k1 *hw;
170
171 hw = vp->hw;
172 /* FIXME: emu10k1_synth is broken. */
173 /* This can get called with hw == 0 */
174 /* Problem apparent on plug, unplug then plug */
175 /* on the Audigy 2 ZS Notebook. */
176 if (hw && (vp->ch >= 0)) {
177 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00);
178 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK);
179 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0);
180 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff);
181 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff);
182 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]);
183 vp->emu->num_voices--;
184 vp->ch = -1;
185 }
186 }
187
188
189 /*
190 * update registers
191 */
192 static void
193 update_voice(struct snd_emux_voice *vp, int update)
194 {
195 struct snd_emu10k1 *hw;
196
197 hw = vp->hw;
198 if (update & SNDRV_EMUX_UPDATE_VOLUME)
199 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol);
200 if (update & SNDRV_EMUX_UPDATE_PITCH)
201 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch);
202 if (update & SNDRV_EMUX_UPDATE_PAN) {
203 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan);
204 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux);
205 }
206 if (update & SNDRV_EMUX_UPDATE_FMMOD)
207 set_fmmod(hw, vp);
208 if (update & SNDRV_EMUX_UPDATE_TREMFREQ)
209 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
210 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2)
211 set_fm2frq2(hw, vp);
212 if (update & SNDRV_EMUX_UPDATE_Q)
213 set_filterQ(hw, vp);
214 }
215
216
217 /*
218 * look up voice table - get the best voice in order of preference
219 */
220 /* spinlock held! */
221 static void
222 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw,
223 struct best_voice *best, int active_only)
224 {
225 struct snd_emux_voice *vp;
226 struct best_voice *bp;
227 int i;
228
229 for (i = 0; i < V_END; i++) {
230 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */;
231 best[i].voice = -1;
232 }
233
234 /*
235 * Go through them all and get a best one to use.
236 * NOTE: could also look at volume and pick the quietest one.
237 */
238 for (i = 0; i < emu->max_voices; i++) {
239 int state, val;
240
241 vp = &emu->voices[i];
242 state = vp->state;
243 if (state == SNDRV_EMUX_ST_OFF) {
244 if (vp->ch < 0) {
245 if (active_only)
246 continue;
247 bp = best + V_FREE;
248 } else
249 bp = best + V_OFF;
250 }
251 else if (state == SNDRV_EMUX_ST_RELEASED ||
252 state == SNDRV_EMUX_ST_PENDING) {
253 bp = best + V_RELEASED;
254 #if 1
255 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch);
256 if (! val)
257 bp = best + V_OFF;
258 #endif
259 }
260 else if (state == SNDRV_EMUX_ST_STANDBY)
261 continue;
262 else if (state & SNDRV_EMUX_ST_ON)
263 bp = best + V_PLAYING;
264 else
265 continue;
266
267 /* check if sample is finished playing (non-looping only) */
268 if (bp != best + V_OFF && bp != best + V_FREE &&
269 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) {
270 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch);
271 if (val >= vp->reg.loopstart)
272 bp = best + V_OFF;
273 }
274
275 if (vp->time < bp->time) {
276 bp->time = vp->time;
277 bp->voice = i;
278 }
279 }
280 }
281
282 /*
283 * get an empty voice
284 *
285 * emu->voice_lock is already held.
286 */
287 static struct snd_emux_voice *
288 get_voice(struct snd_emux *emu, struct snd_emux_port *port)
289 {
290 struct snd_emu10k1 *hw;
291 struct snd_emux_voice *vp;
292 struct best_voice best[V_END];
293 int i;
294
295 hw = emu->hw;
296
297 lookup_voices(emu, hw, best, 0);
298 for (i = 0; i < V_END; i++) {
299 if (best[i].voice >= 0) {
300 vp = &emu->voices[best[i].voice];
301 if (vp->ch < 0) {
302 /* allocate a voice */
303 struct snd_emu10k1_voice *hwvoice;
304 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL)
305 continue;
306 vp->ch = hwvoice->number;
307 emu->num_voices++;
308 }
309 return vp;
310 }
311 }
312
313 /* not found */
314 return NULL;
315 }
316
317 /*
318 * prepare envelopes and LFOs
319 */
320 static int
321 start_voice(struct snd_emux_voice *vp)
322 {
323 unsigned int temp;
324 int ch;
325 unsigned int addr, mapped_offset;
326 struct snd_midi_channel *chan;
327 struct snd_emu10k1 *hw;
328 struct snd_emu10k1_memblk *emem;
329
330 hw = vp->hw;
331 ch = vp->ch;
332 if (snd_BUG_ON(ch < 0))
333 return -EINVAL;
334 chan = vp->chan;
335
336 emem = (struct snd_emu10k1_memblk *)vp->block;
337 if (emem == NULL)
338 return -EINVAL;
339 emem->map_locked++;
340 if (snd_emu10k1_memblk_map(hw, emem) < 0) {
341 /* printk(KERN_ERR "emu: cannot map!\n"); */
342 return -ENOMEM;
343 }
344 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1;
345 vp->reg.start += mapped_offset;
346 vp->reg.end += mapped_offset;
347 vp->reg.loopstart += mapped_offset;
348 vp->reg.loopend += mapped_offset;
349
350 /* set channel routing */
351 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */
352 if (hw->audigy) {
353 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) |
354 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24);
355 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp);
356 } else {
357 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) |
358 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28);
359 snd_emu10k1_ptr_write(hw, FXRT, ch, temp);
360 }
361
362 /* channel to be silent and idle */
363 snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000);
364 snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF);
365 snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF);
366 snd_emu10k1_ptr_write(hw, PTRX, ch, 0);
367 snd_emu10k1_ptr_write(hw, CPF, ch, 0);
368
369 /* set pitch offset */
370 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch);
371
372 /* set envelope parameters */
373 snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay);
374 snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld);
375 snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus);
376 snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay);
377 snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld);
378 /* decay/sustain parameter for volume envelope is used
379 for triggerg the voice */
380
381 /* cutoff and volume */
382 temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol;
383 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp);
384
385 /* modulation envelope heights */
386 snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe);
387
388 /* lfo1/2 delay */
389 snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay);
390 snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay);
391
392 /* lfo1 pitch & cutoff shift */
393 set_fmmod(hw, vp);
394 /* lfo1 volume & freq */
395 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
396 /* lfo2 pitch & freq */
397 set_fm2frq2(hw, vp);
398
399 /* reverb and loop start (reverb 8bit, MSB) */
400 temp = vp->reg.parm.reverb;
401 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10;
402 LIMITMAX(temp, 255);
403 addr = vp->reg.loopstart;
404 snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr);
405
406 /* chorus & loop end (chorus 8bit, MSB) */
407 addr = vp->reg.loopend;
408 temp = vp->reg.parm.chorus;
409 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10;
410 LIMITMAX(temp, 255);
411 temp = (temp <<24) | addr;
412 snd_emu10k1_ptr_write(hw, DSL, ch, temp);
413
414 /* clear filter delay memory */
415 snd_emu10k1_ptr_write(hw, Z1, ch, 0);
416 snd_emu10k1_ptr_write(hw, Z2, ch, 0);
417
418 /* invalidate maps */
419 temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK;
420 snd_emu10k1_ptr_write(hw, MAPA, ch, temp);
421 snd_emu10k1_ptr_write(hw, MAPB, ch, temp);
422 #if 0
423 /* cache */
424 {
425 unsigned int val, sample;
426 val = 32;
427 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS)
428 sample = 0x80808080;
429 else {
430 sample = 0;
431 val *= 2;
432 }
433
434 /* cache */
435 snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16);
436 snd_emu10k1_ptr_write(hw, CDE, ch, sample);
437 snd_emu10k1_ptr_write(hw, CDF, ch, sample);
438
439 /* invalidate maps */
440 temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK;
441 snd_emu10k1_ptr_write(hw, MAPA, ch, temp);
442 snd_emu10k1_ptr_write(hw, MAPB, ch, temp);
443
444 /* fill cache */
445 val -= 4;
446 val <<= 25;
447 val |= 0x1c << 16;
448 snd_emu10k1_ptr_write(hw, CCR, ch, val);
449 }
450 #endif
451
452 /* Q & current address (Q 4bit value, MSB) */
453 addr = vp->reg.start;
454 temp = vp->reg.parm.filterQ;
455 temp = (temp<<28) | addr;
456 if (vp->apitch < 0xe400)
457 temp |= CCCA_INTERPROM_0;
458 else {
459 unsigned int shift = (vp->apitch - 0xe000) >> 10;
460 temp |= shift << 25;
461 }
462 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS)
463 temp |= CCCA_8BITSELECT;
464 snd_emu10k1_ptr_write(hw, CCCA, ch, temp);
465
466 /* reset volume */
467 temp = (unsigned int)vp->vtarget << 16;
468 snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget);
469 snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00);
470 return 0;
471 }
472
473 /*
474 * Start envelope
475 */
476 static void
477 trigger_voice(struct snd_emux_voice *vp)
478 {
479 unsigned int temp, ptarget;
480 struct snd_emu10k1 *hw;
481 struct snd_emu10k1_memblk *emem;
482
483 hw = vp->hw;
484
485 emem = (struct snd_emu10k1_memblk *)vp->block;
486 if (! emem || emem->mapped_page < 0)
487 return; /* not mapped */
488
489 #if 0
490 ptarget = (unsigned int)vp->ptarget << 16;
491 #else
492 ptarget = IP_TO_CP(vp->apitch);
493 #endif
494 /* set pitch target and pan (volume) */
495 temp = ptarget | (vp->apan << 8) | vp->aaux;
496 snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp);
497
498 /* pitch target */
499 snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget);
500
501 /* trigger voice */
502 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK);
503 }
504
505 #define MOD_SENSE 18
506
507 /* set lfo1 modulation height and cutoff */
508 static void
509 set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
510 {
511 unsigned short fmmod;
512 short pitch;
513 unsigned char cutoff;
514 int modulation;
515
516 pitch = (char)(vp->reg.parm.fmmod>>8);
517 cutoff = (vp->reg.parm.fmmod & 0xff);
518 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
519 pitch += (MOD_SENSE * modulation) / 1200;
520 LIMITVALUE(pitch, -128, 127);
521 fmmod = ((unsigned char)pitch<<8) | cutoff;
522 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod);
523 }
524
525 /* set lfo2 pitch & frequency */
526 static void
527 set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
528 {
529 unsigned short fm2frq2;
530 short pitch;
531 unsigned char freq;
532 int modulation;
533
534 pitch = (char)(vp->reg.parm.fm2frq2>>8);
535 freq = vp->reg.parm.fm2frq2 & 0xff;
536 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
537 pitch += (MOD_SENSE * modulation) / 1200;
538 LIMITVALUE(pitch, -128, 127);
539 fm2frq2 = ((unsigned char)pitch<<8) | freq;
540 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2);
541 }
542
543 /* set filterQ */
544 static void
545 set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp)
546 {
547 unsigned int val;
548 val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE;
549 val |= (vp->reg.parm.filterQ << 28);
550 snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val);
551 }
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