Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * synth callback routines for the emu8000 (AWE32/64) | |
4 | * | |
5 | * Copyright (C) 1999 Steve Ratcliffe | |
6 | * Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de> | |
1da177e4 LT |
7 | */ |
8 | ||
9 | #include "emu8000_local.h" | |
d81a6d71 | 10 | #include <linux/export.h> |
1da177e4 LT |
11 | #include <sound/asoundef.h> |
12 | ||
13 | /* | |
14 | * prototypes | |
15 | */ | |
029d64b0 TI |
16 | static struct snd_emux_voice *get_voice(struct snd_emux *emu, |
17 | struct snd_emux_port *port); | |
18 | static int start_voice(struct snd_emux_voice *vp); | |
19 | static void trigger_voice(struct snd_emux_voice *vp); | |
20 | static void release_voice(struct snd_emux_voice *vp); | |
21 | static void update_voice(struct snd_emux_voice *vp, int update); | |
22 | static void reset_voice(struct snd_emux *emu, int ch); | |
23 | static void terminate_voice(struct snd_emux_voice *vp); | |
24 | static void sysex(struct snd_emux *emu, char *buf, int len, int parsed, | |
25 | struct snd_midi_channel_set *chset); | |
3d774d5e | 26 | #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) |
029d64b0 | 27 | static int oss_ioctl(struct snd_emux *emu, int cmd, int p1, int p2); |
1da177e4 | 28 | #endif |
029d64b0 TI |
29 | static int load_fx(struct snd_emux *emu, int type, int mode, |
30 | const void __user *buf, long len); | |
31 | ||
32 | static void set_pitch(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
33 | static void set_volume(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
34 | static void set_pan(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
35 | static void set_fmmod(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
36 | static void set_tremfreq(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
37 | static void set_fm2frq2(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
38 | static void set_filterQ(struct snd_emu8000 *hw, struct snd_emux_voice *vp); | |
39 | static void snd_emu8000_tweak_voice(struct snd_emu8000 *emu, int ch); | |
1da177e4 LT |
40 | |
41 | /* | |
42 | * Ensure a value is between two points | |
43 | * macro evaluates its args more than once, so changed to upper-case. | |
44 | */ | |
45 | #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) | |
46 | #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) | |
47 | ||
48 | ||
49 | /* | |
50 | * set up operators | |
51 | */ | |
c9480d05 | 52 | static const struct snd_emux_operators emu8000_ops = { |
1da177e4 LT |
53 | .owner = THIS_MODULE, |
54 | .get_voice = get_voice, | |
55 | .prepare = start_voice, | |
56 | .trigger = trigger_voice, | |
57 | .release = release_voice, | |
58 | .update = update_voice, | |
59 | .terminate = terminate_voice, | |
60 | .reset = reset_voice, | |
61 | .sample_new = snd_emu8000_sample_new, | |
62 | .sample_free = snd_emu8000_sample_free, | |
63 | .sample_reset = snd_emu8000_sample_reset, | |
64 | .load_fx = load_fx, | |
65 | .sysex = sysex, | |
3d774d5e | 66 | #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) |
1da177e4 LT |
67 | .oss_ioctl = oss_ioctl, |
68 | #endif | |
69 | }; | |
70 | ||
71 | void | |
029d64b0 | 72 | snd_emu8000_ops_setup(struct snd_emu8000 *hw) |
1da177e4 LT |
73 | { |
74 | hw->emu->ops = emu8000_ops; | |
75 | } | |
76 | ||
77 | ||
78 | ||
79 | /* | |
80 | * Terminate a voice | |
81 | */ | |
82 | static void | |
029d64b0 | 83 | release_voice(struct snd_emux_voice *vp) |
1da177e4 LT |
84 | { |
85 | int dcysusv; | |
029d64b0 | 86 | struct snd_emu8000 *hw; |
1da177e4 LT |
87 | |
88 | hw = vp->hw; | |
89 | dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease; | |
90 | EMU8000_DCYSUS_WRITE(hw, vp->ch, dcysusv); | |
91 | dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease; | |
92 | EMU8000_DCYSUSV_WRITE(hw, vp->ch, dcysusv); | |
93 | } | |
94 | ||
95 | ||
96 | /* | |
97 | */ | |
98 | static void | |
029d64b0 | 99 | terminate_voice(struct snd_emux_voice *vp) |
1da177e4 | 100 | { |
029d64b0 | 101 | struct snd_emu8000 *hw; |
1da177e4 LT |
102 | |
103 | hw = vp->hw; | |
104 | EMU8000_DCYSUSV_WRITE(hw, vp->ch, 0x807F); | |
105 | } | |
106 | ||
107 | ||
108 | /* | |
109 | */ | |
110 | static void | |
029d64b0 | 111 | update_voice(struct snd_emux_voice *vp, int update) |
1da177e4 | 112 | { |
029d64b0 | 113 | struct snd_emu8000 *hw; |
1da177e4 LT |
114 | |
115 | hw = vp->hw; | |
116 | if (update & SNDRV_EMUX_UPDATE_VOLUME) | |
117 | set_volume(hw, vp); | |
118 | if (update & SNDRV_EMUX_UPDATE_PITCH) | |
119 | set_pitch(hw, vp); | |
120 | if ((update & SNDRV_EMUX_UPDATE_PAN) && | |
121 | vp->port->ctrls[EMUX_MD_REALTIME_PAN]) | |
122 | set_pan(hw, vp); | |
123 | if (update & SNDRV_EMUX_UPDATE_FMMOD) | |
124 | set_fmmod(hw, vp); | |
125 | if (update & SNDRV_EMUX_UPDATE_TREMFREQ) | |
126 | set_tremfreq(hw, vp); | |
127 | if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) | |
128 | set_fm2frq2(hw, vp); | |
129 | if (update & SNDRV_EMUX_UPDATE_Q) | |
130 | set_filterQ(hw, vp); | |
131 | } | |
132 | ||
133 | ||
134 | /* | |
135 | * Find a channel (voice) within the EMU that is not in use or at least | |
136 | * less in use than other channels. Always returns a valid pointer | |
137 | * no matter what. If there is a real shortage of voices then one | |
138 | * will be cut. Such is life. | |
139 | * | |
140 | * The channel index (vp->ch) must be initialized in this routine. | |
141 | * In Emu8k, it is identical with the array index. | |
142 | */ | |
029d64b0 TI |
143 | static struct snd_emux_voice * |
144 | get_voice(struct snd_emux *emu, struct snd_emux_port *port) | |
1da177e4 LT |
145 | { |
146 | int i; | |
029d64b0 TI |
147 | struct snd_emux_voice *vp; |
148 | struct snd_emu8000 *hw; | |
1da177e4 LT |
149 | |
150 | /* what we are looking for, in order of preference */ | |
151 | enum { | |
152 | OFF=0, RELEASED, PLAYING, END | |
153 | }; | |
154 | ||
155 | /* Keeps track of what we are finding */ | |
156 | struct best { | |
157 | unsigned int time; | |
158 | int voice; | |
159 | } best[END]; | |
160 | struct best *bp; | |
161 | ||
162 | hw = emu->hw; | |
163 | ||
164 | for (i = 0; i < END; i++) { | |
395d9dd5 | 165 | best[i].time = (unsigned int)(-1); /* XXX MAX_?INT really */ |
1da177e4 LT |
166 | best[i].voice = -1; |
167 | } | |
168 | ||
169 | /* | |
170 | * Go through them all and get a best one to use. | |
171 | */ | |
172 | for (i = 0; i < emu->max_voices; i++) { | |
173 | int state, val; | |
174 | ||
175 | vp = &emu->voices[i]; | |
176 | state = vp->state; | |
177 | ||
178 | if (state == SNDRV_EMUX_ST_OFF) | |
179 | bp = best + OFF; | |
180 | else if (state == SNDRV_EMUX_ST_RELEASED || | |
181 | state == SNDRV_EMUX_ST_PENDING) { | |
182 | bp = best + RELEASED; | |
183 | val = (EMU8000_CVCF_READ(hw, vp->ch) >> 16) & 0xffff; | |
184 | if (! val) | |
185 | bp = best + OFF; | |
186 | } | |
187 | else if (state & SNDRV_EMUX_ST_ON) | |
188 | bp = best + PLAYING; | |
189 | else | |
190 | continue; | |
191 | ||
192 | /* check if sample is finished playing (non-looping only) */ | |
193 | if (state != SNDRV_EMUX_ST_OFF && | |
194 | (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { | |
195 | val = EMU8000_CCCA_READ(hw, vp->ch) & 0xffffff; | |
196 | if (val >= vp->reg.loopstart) | |
197 | bp = best + OFF; | |
198 | } | |
199 | ||
200 | if (vp->time < bp->time) { | |
201 | bp->time = vp->time; | |
202 | bp->voice = i; | |
203 | } | |
204 | } | |
205 | ||
206 | for (i = 0; i < END; i++) { | |
207 | if (best[i].voice >= 0) { | |
208 | vp = &emu->voices[best[i].voice]; | |
209 | vp->ch = best[i].voice; | |
210 | return vp; | |
211 | } | |
212 | } | |
213 | ||
214 | /* not found */ | |
215 | return NULL; | |
216 | } | |
217 | ||
218 | /* | |
219 | */ | |
220 | static int | |
029d64b0 | 221 | start_voice(struct snd_emux_voice *vp) |
1da177e4 LT |
222 | { |
223 | unsigned int temp; | |
224 | int ch; | |
225 | int addr; | |
029d64b0 TI |
226 | struct snd_midi_channel *chan; |
227 | struct snd_emu8000 *hw; | |
1da177e4 LT |
228 | |
229 | hw = vp->hw; | |
230 | ch = vp->ch; | |
231 | chan = vp->chan; | |
232 | ||
233 | /* channel to be silent and idle */ | |
234 | EMU8000_DCYSUSV_WRITE(hw, ch, 0x0080); | |
235 | EMU8000_VTFT_WRITE(hw, ch, 0x0000FFFF); | |
236 | EMU8000_CVCF_WRITE(hw, ch, 0x0000FFFF); | |
237 | EMU8000_PTRX_WRITE(hw, ch, 0); | |
238 | EMU8000_CPF_WRITE(hw, ch, 0); | |
239 | ||
240 | /* set pitch offset */ | |
241 | set_pitch(hw, vp); | |
242 | ||
243 | /* set envelope parameters */ | |
244 | EMU8000_ENVVAL_WRITE(hw, ch, vp->reg.parm.moddelay); | |
245 | EMU8000_ATKHLD_WRITE(hw, ch, vp->reg.parm.modatkhld); | |
246 | EMU8000_DCYSUS_WRITE(hw, ch, vp->reg.parm.moddcysus); | |
247 | EMU8000_ENVVOL_WRITE(hw, ch, vp->reg.parm.voldelay); | |
248 | EMU8000_ATKHLDV_WRITE(hw, ch, vp->reg.parm.volatkhld); | |
249 | /* decay/sustain parameter for volume envelope is used | |
250 | for triggerg the voice */ | |
251 | ||
252 | /* cutoff and volume */ | |
253 | set_volume(hw, vp); | |
254 | ||
255 | /* modulation envelope heights */ | |
256 | EMU8000_PEFE_WRITE(hw, ch, vp->reg.parm.pefe); | |
257 | ||
258 | /* lfo1/2 delay */ | |
259 | EMU8000_LFO1VAL_WRITE(hw, ch, vp->reg.parm.lfo1delay); | |
260 | EMU8000_LFO2VAL_WRITE(hw, ch, vp->reg.parm.lfo2delay); | |
261 | ||
262 | /* lfo1 pitch & cutoff shift */ | |
263 | set_fmmod(hw, vp); | |
264 | /* lfo1 volume & freq */ | |
265 | set_tremfreq(hw, vp); | |
266 | /* lfo2 pitch & freq */ | |
267 | set_fm2frq2(hw, vp); | |
268 | /* pan & loop start */ | |
269 | set_pan(hw, vp); | |
270 | ||
271 | /* chorus & loop end (chorus 8bit, MSB) */ | |
272 | addr = vp->reg.loopend - 1; | |
273 | temp = vp->reg.parm.chorus; | |
274 | temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; | |
275 | LIMITMAX(temp, 255); | |
276 | temp = (temp <<24) | (unsigned int)addr; | |
277 | EMU8000_CSL_WRITE(hw, ch, temp); | |
278 | ||
279 | /* Q & current address (Q 4bit value, MSB) */ | |
280 | addr = vp->reg.start - 1; | |
281 | temp = vp->reg.parm.filterQ; | |
282 | temp = (temp<<28) | (unsigned int)addr; | |
283 | EMU8000_CCCA_WRITE(hw, ch, temp); | |
284 | ||
285 | /* clear unknown registers */ | |
286 | EMU8000_00A0_WRITE(hw, ch, 0); | |
287 | EMU8000_0080_WRITE(hw, ch, 0); | |
288 | ||
289 | /* reset volume */ | |
290 | temp = vp->vtarget << 16; | |
291 | EMU8000_VTFT_WRITE(hw, ch, temp | vp->ftarget); | |
292 | EMU8000_CVCF_WRITE(hw, ch, temp | 0xff00); | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Start envelope | |
299 | */ | |
300 | static void | |
029d64b0 | 301 | trigger_voice(struct snd_emux_voice *vp) |
1da177e4 LT |
302 | { |
303 | int ch = vp->ch; | |
304 | unsigned int temp; | |
029d64b0 | 305 | struct snd_emu8000 *hw; |
1da177e4 LT |
306 | |
307 | hw = vp->hw; | |
308 | ||
309 | /* set reverb and pitch target */ | |
310 | temp = vp->reg.parm.reverb; | |
311 | temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; | |
312 | LIMITMAX(temp, 255); | |
313 | temp = (temp << 8) | (vp->ptarget << 16) | vp->aaux; | |
314 | EMU8000_PTRX_WRITE(hw, ch, temp); | |
315 | EMU8000_CPF_WRITE(hw, ch, vp->ptarget << 16); | |
316 | EMU8000_DCYSUSV_WRITE(hw, ch, vp->reg.parm.voldcysus); | |
317 | } | |
318 | ||
319 | /* | |
320 | * reset voice parameters | |
321 | */ | |
322 | static void | |
029d64b0 | 323 | reset_voice(struct snd_emux *emu, int ch) |
1da177e4 | 324 | { |
029d64b0 | 325 | struct snd_emu8000 *hw; |
1da177e4 LT |
326 | |
327 | hw = emu->hw; | |
328 | EMU8000_DCYSUSV_WRITE(hw, ch, 0x807F); | |
329 | snd_emu8000_tweak_voice(hw, ch); | |
330 | } | |
331 | ||
332 | /* | |
333 | * Set the pitch of a possibly playing note. | |
334 | */ | |
335 | static void | |
029d64b0 | 336 | set_pitch(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
337 | { |
338 | EMU8000_IP_WRITE(hw, vp->ch, vp->apitch); | |
339 | } | |
340 | ||
341 | /* | |
342 | * Set the volume of a possibly already playing note | |
343 | */ | |
344 | static void | |
029d64b0 | 345 | set_volume(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
346 | { |
347 | int ifatn; | |
348 | ||
349 | ifatn = (unsigned char)vp->acutoff; | |
350 | ifatn = (ifatn << 8); | |
351 | ifatn |= (unsigned char)vp->avol; | |
352 | EMU8000_IFATN_WRITE(hw, vp->ch, ifatn); | |
353 | } | |
354 | ||
355 | /* | |
356 | * Set pan and loop start address. | |
357 | */ | |
358 | static void | |
029d64b0 | 359 | set_pan(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
360 | { |
361 | unsigned int temp; | |
362 | ||
363 | temp = ((unsigned int)vp->apan<<24) | ((unsigned int)vp->reg.loopstart - 1); | |
364 | EMU8000_PSST_WRITE(hw, vp->ch, temp); | |
365 | } | |
366 | ||
367 | #define MOD_SENSE 18 | |
368 | ||
369 | static void | |
029d64b0 | 370 | set_fmmod(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
371 | { |
372 | unsigned short fmmod; | |
373 | short pitch; | |
374 | unsigned char cutoff; | |
375 | int modulation; | |
376 | ||
377 | pitch = (char)(vp->reg.parm.fmmod>>8); | |
378 | cutoff = (vp->reg.parm.fmmod & 0xff); | |
379 | modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; | |
380 | pitch += (MOD_SENSE * modulation) / 1200; | |
381 | LIMITVALUE(pitch, -128, 127); | |
382 | fmmod = ((unsigned char)pitch<<8) | cutoff; | |
383 | EMU8000_FMMOD_WRITE(hw, vp->ch, fmmod); | |
384 | } | |
385 | ||
386 | /* set tremolo (lfo1) volume & frequency */ | |
387 | static void | |
029d64b0 | 388 | set_tremfreq(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
389 | { |
390 | EMU8000_TREMFRQ_WRITE(hw, vp->ch, vp->reg.parm.tremfrq); | |
391 | } | |
392 | ||
393 | /* set lfo2 pitch & frequency */ | |
394 | static void | |
029d64b0 | 395 | set_fm2frq2(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
396 | { |
397 | unsigned short fm2frq2; | |
398 | short pitch; | |
399 | unsigned char freq; | |
400 | int modulation; | |
401 | ||
402 | pitch = (char)(vp->reg.parm.fm2frq2>>8); | |
403 | freq = vp->reg.parm.fm2frq2 & 0xff; | |
404 | modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; | |
405 | pitch += (MOD_SENSE * modulation) / 1200; | |
406 | LIMITVALUE(pitch, -128, 127); | |
407 | fm2frq2 = ((unsigned char)pitch<<8) | freq; | |
408 | EMU8000_FM2FRQ2_WRITE(hw, vp->ch, fm2frq2); | |
409 | } | |
410 | ||
411 | /* set filterQ */ | |
412 | static void | |
029d64b0 | 413 | set_filterQ(struct snd_emu8000 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
414 | { |
415 | unsigned int addr; | |
416 | addr = EMU8000_CCCA_READ(hw, vp->ch) & 0xffffff; | |
417 | addr |= (vp->reg.parm.filterQ << 28); | |
418 | EMU8000_CCCA_WRITE(hw, vp->ch, addr); | |
419 | } | |
420 | ||
421 | /* | |
422 | * set the envelope & LFO parameters to the default values | |
423 | */ | |
424 | static void | |
029d64b0 | 425 | snd_emu8000_tweak_voice(struct snd_emu8000 *emu, int i) |
1da177e4 LT |
426 | { |
427 | /* set all mod/vol envelope shape to minimum */ | |
428 | EMU8000_ENVVOL_WRITE(emu, i, 0x8000); | |
429 | EMU8000_ENVVAL_WRITE(emu, i, 0x8000); | |
430 | EMU8000_DCYSUS_WRITE(emu, i, 0x7F7F); | |
431 | EMU8000_ATKHLDV_WRITE(emu, i, 0x7F7F); | |
432 | EMU8000_ATKHLD_WRITE(emu, i, 0x7F7F); | |
433 | EMU8000_PEFE_WRITE(emu, i, 0); /* mod envelope height to zero */ | |
434 | EMU8000_LFO1VAL_WRITE(emu, i, 0x8000); /* no delay for LFO1 */ | |
435 | EMU8000_LFO2VAL_WRITE(emu, i, 0x8000); | |
436 | EMU8000_IP_WRITE(emu, i, 0xE000); /* no pitch shift */ | |
437 | EMU8000_IFATN_WRITE(emu, i, 0xFF00); /* volume to minimum */ | |
438 | EMU8000_FMMOD_WRITE(emu, i, 0); | |
439 | EMU8000_TREMFRQ_WRITE(emu, i, 0); | |
440 | EMU8000_FM2FRQ2_WRITE(emu, i, 0); | |
441 | } | |
442 | ||
443 | /* | |
444 | * sysex callback | |
445 | */ | |
446 | static void | |
029d64b0 | 447 | sysex(struct snd_emux *emu, char *buf, int len, int parsed, struct snd_midi_channel_set *chset) |
1da177e4 | 448 | { |
029d64b0 | 449 | struct snd_emu8000 *hw; |
1da177e4 LT |
450 | |
451 | hw = emu->hw; | |
452 | ||
453 | switch (parsed) { | |
454 | case SNDRV_MIDI_SYSEX_GS_CHORUS_MODE: | |
455 | hw->chorus_mode = chset->gs_chorus_mode; | |
456 | snd_emu8000_update_chorus_mode(hw); | |
457 | break; | |
458 | ||
459 | case SNDRV_MIDI_SYSEX_GS_REVERB_MODE: | |
460 | hw->reverb_mode = chset->gs_reverb_mode; | |
461 | snd_emu8000_update_reverb_mode(hw); | |
462 | break; | |
463 | } | |
464 | } | |
465 | ||
466 | ||
3d774d5e | 467 | #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) |
1da177e4 LT |
468 | /* |
469 | * OSS ioctl callback | |
470 | */ | |
471 | static int | |
029d64b0 | 472 | oss_ioctl(struct snd_emux *emu, int cmd, int p1, int p2) |
1da177e4 | 473 | { |
029d64b0 | 474 | struct snd_emu8000 *hw; |
1da177e4 LT |
475 | |
476 | hw = emu->hw; | |
477 | ||
478 | switch (cmd) { | |
479 | case _EMUX_OSS_REVERB_MODE: | |
480 | hw->reverb_mode = p1; | |
481 | snd_emu8000_update_reverb_mode(hw); | |
482 | break; | |
483 | ||
484 | case _EMUX_OSS_CHORUS_MODE: | |
485 | hw->chorus_mode = p1; | |
486 | snd_emu8000_update_chorus_mode(hw); | |
487 | break; | |
488 | ||
489 | case _EMUX_OSS_INITIALIZE_CHIP: | |
490 | /* snd_emu8000_init(hw); */ /*ignored*/ | |
491 | break; | |
492 | ||
493 | case _EMUX_OSS_EQUALIZER: | |
494 | hw->bass_level = p1; | |
495 | hw->treble_level = p2; | |
496 | snd_emu8000_update_equalizer(hw); | |
497 | break; | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | #endif | |
502 | ||
503 | ||
504 | /* | |
505 | * additional patch keys | |
506 | */ | |
507 | ||
508 | #define SNDRV_EMU8000_LOAD_CHORUS_FX 0x10 /* optarg=mode */ | |
509 | #define SNDRV_EMU8000_LOAD_REVERB_FX 0x11 /* optarg=mode */ | |
510 | ||
511 | ||
512 | /* | |
513 | * callback routine | |
514 | */ | |
515 | ||
516 | static int | |
029d64b0 | 517 | load_fx(struct snd_emux *emu, int type, int mode, const void __user *buf, long len) |
1da177e4 | 518 | { |
029d64b0 | 519 | struct snd_emu8000 *hw; |
1da177e4 LT |
520 | hw = emu->hw; |
521 | ||
522 | /* skip header */ | |
523 | buf += 16; | |
524 | len -= 16; | |
525 | ||
526 | switch (type) { | |
527 | case SNDRV_EMU8000_LOAD_CHORUS_FX: | |
528 | return snd_emu8000_load_chorus_fx(hw, mode, buf, len); | |
529 | case SNDRV_EMU8000_LOAD_REVERB_FX: | |
530 | return snd_emu8000_load_reverb_fx(hw, mode, buf, len); | |
531 | } | |
532 | return -EINVAL; | |
533 | } | |
534 |