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1da177e4 LT |
1 | /* |
2 | * Copyright (C) by Paul Barton-Davis 1998-1999 | |
3 | * | |
4 | * This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) | |
5 | * Version 2 (June 1991). See the "COPYING" file distributed with this | |
6 | * software for more info. | |
7 | */ | |
8 | ||
9 | /* The low level driver for the WaveFront ICS2115 MIDI interface(s) | |
10 | * | |
11 | * Note that there is also an MPU-401 emulation (actually, a UART-401 | |
12 | * emulation) on the CS4232 on the Tropez and Tropez Plus. This code | |
13 | * has nothing to do with that interface at all. | |
14 | * | |
15 | * The interface is essentially just a UART-401, but is has the | |
16 | * interesting property of supporting what Turtle Beach called | |
17 | * "Virtual MIDI" mode. In this mode, there are effectively *two* | |
18 | * MIDI buses accessible via the interface, one that is routed | |
19 | * solely to/from the external WaveFront synthesizer and the other | |
20 | * corresponding to the pin/socket connector used to link external | |
21 | * MIDI devices to the board. | |
22 | * | |
23 | * This driver fully supports this mode, allowing two distinct MIDI | |
24 | * busses to be used completely independently, giving 32 channels of | |
25 | * MIDI routing, 16 to the WaveFront synth and 16 to the external MIDI | |
26 | * bus. The devices are named /dev/snd/midiCnD0 and /dev/snd/midiCnD1, | |
27 | * where `n' is the card number. Note that the device numbers may be | |
28 | * something other than 0 and 1 if the CS4232 UART/MPU-401 interface | |
29 | * is enabled. | |
30 | * | |
31 | * Switching between the two is accomplished externally by the driver | |
32 | * using the two otherwise unused MIDI bytes. See the code for more details. | |
33 | * | |
34 | * NOTE: VIRTUAL MIDI MODE IS ON BY DEFAULT (see lowlevel/isa/wavefront.c) | |
35 | * | |
36 | * The main reason to turn off Virtual MIDI mode is when you want to | |
37 | * tightly couple the WaveFront synth with an external MIDI | |
38 | * device. You won't be able to distinguish the source of any MIDI | |
39 | * data except via SysEx ID, but thats probably OK, since for the most | |
40 | * part, the WaveFront won't be sending any MIDI data at all. | |
41 | * | |
42 | * The main reason to turn on Virtual MIDI Mode is to provide two | |
43 | * completely independent 16-channel MIDI buses, one to the | |
44 | * WaveFront and one to any external MIDI devices. Given the 32 | |
45 | * voice nature of the WaveFront, its pretty easy to find a use | |
46 | * for all 16 channels driving just that synth. | |
47 | * | |
48 | */ | |
49 | ||
6cbbfe1c | 50 | #include <linux/io.h> |
1da177e4 LT |
51 | #include <linux/init.h> |
52 | #include <linux/time.h> | |
53 | #include <linux/wait.h> | |
54 | #include <sound/core.h> | |
55 | #include <sound/snd_wavefront.h> | |
56 | ||
57 | static inline int | |
58 | wf_mpu_status (snd_wavefront_midi_t *midi) | |
59 | ||
60 | { | |
61 | return inb (midi->mpu_status_port); | |
62 | } | |
63 | ||
64 | static inline int | |
65 | input_avail (snd_wavefront_midi_t *midi) | |
66 | ||
67 | { | |
68 | return !(wf_mpu_status(midi) & INPUT_AVAIL); | |
69 | } | |
70 | ||
71 | static inline int | |
72 | output_ready (snd_wavefront_midi_t *midi) | |
73 | ||
74 | { | |
75 | return !(wf_mpu_status(midi) & OUTPUT_READY); | |
76 | } | |
77 | ||
78 | static inline int | |
79 | read_data (snd_wavefront_midi_t *midi) | |
80 | ||
81 | { | |
82 | return inb (midi->mpu_data_port); | |
83 | } | |
84 | ||
85 | static inline void | |
86 | write_data (snd_wavefront_midi_t *midi, unsigned char byte) | |
87 | ||
88 | { | |
89 | outb (byte, midi->mpu_data_port); | |
90 | } | |
91 | ||
92 | static snd_wavefront_midi_t * | |
542172f3 | 93 | get_wavefront_midi (struct snd_rawmidi_substream *substream) |
1da177e4 LT |
94 | |
95 | { | |
542172f3 | 96 | struct snd_card *card; |
1da177e4 LT |
97 | snd_wavefront_card_t *acard; |
98 | ||
99 | if (substream == NULL || substream->rmidi == NULL) | |
100 | return NULL; | |
101 | ||
102 | card = substream->rmidi->card; | |
103 | ||
104 | if (card == NULL) | |
105 | return NULL; | |
106 | ||
107 | if (card->private_data == NULL) | |
108 | return NULL; | |
109 | ||
110 | acard = card->private_data; | |
111 | ||
112 | return &acard->wavefront.midi; | |
113 | } | |
114 | ||
115 | static void snd_wavefront_midi_output_write(snd_wavefront_card_t *card) | |
116 | { | |
117 | snd_wavefront_midi_t *midi = &card->wavefront.midi; | |
118 | snd_wavefront_mpu_id mpu; | |
119 | unsigned long flags; | |
120 | unsigned char midi_byte; | |
121 | int max = 256, mask = 1; | |
122 | int timeout; | |
123 | ||
124 | /* Its not OK to try to change the status of "virtuality" of | |
125 | the MIDI interface while we're outputting stuff. See | |
126 | snd_wavefront_midi_{enable,disable}_virtual () for the | |
127 | other half of this. | |
128 | ||
129 | The first loop attempts to flush any data from the | |
130 | current output device, and then the second | |
131 | emits the switch byte (if necessary), and starts | |
132 | outputting data for the output device currently in use. | |
133 | */ | |
134 | ||
135 | if (midi->substream_output[midi->output_mpu] == NULL) { | |
136 | goto __second; | |
137 | } | |
138 | ||
139 | while (max > 0) { | |
140 | ||
141 | /* XXX fix me - no hard timing loops allowed! */ | |
142 | ||
143 | for (timeout = 30000; timeout > 0; timeout--) { | |
144 | if (output_ready (midi)) | |
145 | break; | |
146 | } | |
147 | ||
148 | spin_lock_irqsave (&midi->virtual, flags); | |
149 | if ((midi->mode[midi->output_mpu] & MPU401_MODE_OUTPUT) == 0) { | |
150 | spin_unlock_irqrestore (&midi->virtual, flags); | |
151 | goto __second; | |
152 | } | |
153 | if (output_ready (midi)) { | |
154 | if (snd_rawmidi_transmit(midi->substream_output[midi->output_mpu], &midi_byte, 1) == 1) { | |
155 | if (!midi->isvirtual || | |
156 | (midi_byte != WF_INTERNAL_SWITCH && | |
157 | midi_byte != WF_EXTERNAL_SWITCH)) | |
158 | write_data(midi, midi_byte); | |
159 | max--; | |
160 | } else { | |
161 | if (midi->istimer) { | |
162 | if (--midi->istimer <= 0) | |
163 | del_timer(&midi->timer); | |
164 | } | |
165 | midi->mode[midi->output_mpu] &= ~MPU401_MODE_OUTPUT_TRIGGER; | |
166 | spin_unlock_irqrestore (&midi->virtual, flags); | |
167 | goto __second; | |
168 | } | |
169 | } else { | |
170 | spin_unlock_irqrestore (&midi->virtual, flags); | |
171 | return; | |
172 | } | |
173 | spin_unlock_irqrestore (&midi->virtual, flags); | |
174 | } | |
175 | ||
176 | __second: | |
177 | ||
178 | if (midi->substream_output[!midi->output_mpu] == NULL) { | |
179 | return; | |
180 | } | |
181 | ||
182 | while (max > 0) { | |
183 | ||
184 | /* XXX fix me - no hard timing loops allowed! */ | |
185 | ||
186 | for (timeout = 30000; timeout > 0; timeout--) { | |
187 | if (output_ready (midi)) | |
188 | break; | |
189 | } | |
190 | ||
191 | spin_lock_irqsave (&midi->virtual, flags); | |
192 | if (!midi->isvirtual) | |
193 | mask = 0; | |
194 | mpu = midi->output_mpu ^ mask; | |
195 | mask = 0; /* don't invert the value from now */ | |
196 | if ((midi->mode[mpu] & MPU401_MODE_OUTPUT) == 0) { | |
197 | spin_unlock_irqrestore (&midi->virtual, flags); | |
198 | return; | |
199 | } | |
200 | if (snd_rawmidi_transmit_empty(midi->substream_output[mpu])) | |
201 | goto __timer; | |
202 | if (output_ready (midi)) { | |
203 | if (mpu != midi->output_mpu) { | |
204 | write_data(midi, mpu == internal_mpu ? | |
205 | WF_INTERNAL_SWITCH : | |
206 | WF_EXTERNAL_SWITCH); | |
207 | midi->output_mpu = mpu; | |
208 | } else if (snd_rawmidi_transmit(midi->substream_output[mpu], &midi_byte, 1) == 1) { | |
209 | if (!midi->isvirtual || | |
210 | (midi_byte != WF_INTERNAL_SWITCH && | |
211 | midi_byte != WF_EXTERNAL_SWITCH)) | |
212 | write_data(midi, midi_byte); | |
213 | max--; | |
214 | } else { | |
215 | __timer: | |
216 | if (midi->istimer) { | |
217 | if (--midi->istimer <= 0) | |
218 | del_timer(&midi->timer); | |
219 | } | |
220 | midi->mode[mpu] &= ~MPU401_MODE_OUTPUT_TRIGGER; | |
221 | spin_unlock_irqrestore (&midi->virtual, flags); | |
222 | return; | |
223 | } | |
224 | } else { | |
225 | spin_unlock_irqrestore (&midi->virtual, flags); | |
226 | return; | |
227 | } | |
228 | spin_unlock_irqrestore (&midi->virtual, flags); | |
229 | } | |
230 | } | |
231 | ||
542172f3 | 232 | static int snd_wavefront_midi_input_open(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
233 | { |
234 | unsigned long flags; | |
235 | snd_wavefront_midi_t *midi; | |
236 | snd_wavefront_mpu_id mpu; | |
237 | ||
622207dc TI |
238 | if (snd_BUG_ON(!substream || !substream->rmidi)) |
239 | return -ENXIO; | |
240 | if (snd_BUG_ON(!substream->rmidi->private_data)) | |
241 | return -ENXIO; | |
1da177e4 LT |
242 | |
243 | mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data); | |
244 | ||
245 | if ((midi = get_wavefront_midi (substream)) == NULL) | |
246 | return -EIO; | |
247 | ||
248 | spin_lock_irqsave (&midi->open, flags); | |
249 | midi->mode[mpu] |= MPU401_MODE_INPUT; | |
250 | midi->substream_input[mpu] = substream; | |
251 | spin_unlock_irqrestore (&midi->open, flags); | |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
542172f3 | 256 | static int snd_wavefront_midi_output_open(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
257 | { |
258 | unsigned long flags; | |
259 | snd_wavefront_midi_t *midi; | |
260 | snd_wavefront_mpu_id mpu; | |
261 | ||
622207dc TI |
262 | if (snd_BUG_ON(!substream || !substream->rmidi)) |
263 | return -ENXIO; | |
264 | if (snd_BUG_ON(!substream->rmidi->private_data)) | |
265 | return -ENXIO; | |
1da177e4 LT |
266 | |
267 | mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data); | |
268 | ||
269 | if ((midi = get_wavefront_midi (substream)) == NULL) | |
270 | return -EIO; | |
271 | ||
272 | spin_lock_irqsave (&midi->open, flags); | |
273 | midi->mode[mpu] |= MPU401_MODE_OUTPUT; | |
274 | midi->substream_output[mpu] = substream; | |
275 | spin_unlock_irqrestore (&midi->open, flags); | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
542172f3 | 280 | static int snd_wavefront_midi_input_close(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
281 | { |
282 | unsigned long flags; | |
283 | snd_wavefront_midi_t *midi; | |
284 | snd_wavefront_mpu_id mpu; | |
285 | ||
622207dc TI |
286 | if (snd_BUG_ON(!substream || !substream->rmidi)) |
287 | return -ENXIO; | |
288 | if (snd_BUG_ON(!substream->rmidi->private_data)) | |
289 | return -ENXIO; | |
1da177e4 LT |
290 | |
291 | mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data); | |
292 | ||
293 | if ((midi = get_wavefront_midi (substream)) == NULL) | |
294 | return -EIO; | |
295 | ||
296 | spin_lock_irqsave (&midi->open, flags); | |
297 | midi->mode[mpu] &= ~MPU401_MODE_INPUT; | |
298 | spin_unlock_irqrestore (&midi->open, flags); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
542172f3 | 303 | static int snd_wavefront_midi_output_close(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
304 | { |
305 | unsigned long flags; | |
306 | snd_wavefront_midi_t *midi; | |
307 | snd_wavefront_mpu_id mpu; | |
308 | ||
622207dc TI |
309 | if (snd_BUG_ON(!substream || !substream->rmidi)) |
310 | return -ENXIO; | |
311 | if (snd_BUG_ON(!substream->rmidi->private_data)) | |
312 | return -ENXIO; | |
1da177e4 LT |
313 | |
314 | mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data); | |
315 | ||
316 | if ((midi = get_wavefront_midi (substream)) == NULL) | |
317 | return -EIO; | |
318 | ||
319 | spin_lock_irqsave (&midi->open, flags); | |
320 | midi->mode[mpu] &= ~MPU401_MODE_OUTPUT; | |
321 | spin_unlock_irqrestore (&midi->open, flags); | |
322 | return 0; | |
323 | } | |
324 | ||
542172f3 | 325 | static void snd_wavefront_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) |
1da177e4 LT |
326 | { |
327 | unsigned long flags; | |
328 | snd_wavefront_midi_t *midi; | |
329 | snd_wavefront_mpu_id mpu; | |
330 | ||
331 | if (substream == NULL || substream->rmidi == NULL) | |
332 | return; | |
333 | ||
334 | if (substream->rmidi->private_data == NULL) | |
335 | return; | |
336 | ||
337 | mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data); | |
338 | ||
339 | if ((midi = get_wavefront_midi (substream)) == NULL) { | |
340 | return; | |
341 | } | |
342 | ||
343 | spin_lock_irqsave (&midi->virtual, flags); | |
344 | if (up) { | |
345 | midi->mode[mpu] |= MPU401_MODE_INPUT_TRIGGER; | |
346 | } else { | |
347 | midi->mode[mpu] &= ~MPU401_MODE_INPUT_TRIGGER; | |
348 | } | |
349 | spin_unlock_irqrestore (&midi->virtual, flags); | |
350 | } | |
351 | ||
352 | static void snd_wavefront_midi_output_timer(unsigned long data) | |
353 | { | |
354 | snd_wavefront_card_t *card = (snd_wavefront_card_t *)data; | |
355 | snd_wavefront_midi_t *midi = &card->wavefront.midi; | |
356 | unsigned long flags; | |
357 | ||
358 | spin_lock_irqsave (&midi->virtual, flags); | |
b843ce74 | 359 | mod_timer(&midi->timer, 1 + jiffies); |
1da177e4 LT |
360 | spin_unlock_irqrestore (&midi->virtual, flags); |
361 | snd_wavefront_midi_output_write(card); | |
362 | } | |
363 | ||
542172f3 | 364 | static void snd_wavefront_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) |
1da177e4 LT |
365 | { |
366 | unsigned long flags; | |
367 | snd_wavefront_midi_t *midi; | |
368 | snd_wavefront_mpu_id mpu; | |
369 | ||
370 | if (substream == NULL || substream->rmidi == NULL) | |
371 | return; | |
372 | ||
373 | if (substream->rmidi->private_data == NULL) | |
374 | return; | |
375 | ||
376 | mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data); | |
377 | ||
378 | if ((midi = get_wavefront_midi (substream)) == NULL) { | |
379 | return; | |
380 | } | |
381 | ||
382 | spin_lock_irqsave (&midi->virtual, flags); | |
383 | if (up) { | |
384 | if ((midi->mode[mpu] & MPU401_MODE_OUTPUT_TRIGGER) == 0) { | |
385 | if (!midi->istimer) { | |
b843ce74 TI |
386 | setup_timer(&midi->timer, |
387 | snd_wavefront_midi_output_timer, | |
388 | (unsigned long) substream->rmidi->card->private_data); | |
389 | mod_timer(&midi->timer, 1 + jiffies); | |
1da177e4 LT |
390 | } |
391 | midi->istimer++; | |
392 | midi->mode[mpu] |= MPU401_MODE_OUTPUT_TRIGGER; | |
393 | } | |
394 | } else { | |
395 | midi->mode[mpu] &= ~MPU401_MODE_OUTPUT_TRIGGER; | |
396 | } | |
397 | spin_unlock_irqrestore (&midi->virtual, flags); | |
398 | ||
399 | if (up) | |
400 | snd_wavefront_midi_output_write((snd_wavefront_card_t *)substream->rmidi->card->private_data); | |
401 | } | |
402 | ||
403 | void | |
404 | snd_wavefront_midi_interrupt (snd_wavefront_card_t *card) | |
405 | ||
406 | { | |
407 | unsigned long flags; | |
408 | snd_wavefront_midi_t *midi; | |
542172f3 | 409 | static struct snd_rawmidi_substream *substream = NULL; |
1da177e4 LT |
410 | static int mpu = external_mpu; |
411 | int max = 128; | |
412 | unsigned char byte; | |
413 | ||
414 | midi = &card->wavefront.midi; | |
415 | ||
416 | if (!input_avail (midi)) { /* not for us */ | |
417 | snd_wavefront_midi_output_write(card); | |
418 | return; | |
419 | } | |
420 | ||
421 | spin_lock_irqsave (&midi->virtual, flags); | |
422 | while (--max) { | |
423 | ||
424 | if (input_avail (midi)) { | |
425 | byte = read_data (midi); | |
426 | ||
427 | if (midi->isvirtual) { | |
428 | if (byte == WF_EXTERNAL_SWITCH) { | |
429 | substream = midi->substream_input[external_mpu]; | |
430 | mpu = external_mpu; | |
431 | } else if (byte == WF_INTERNAL_SWITCH) { | |
432 | substream = midi->substream_output[internal_mpu]; | |
433 | mpu = internal_mpu; | |
434 | } /* else just leave it as it is */ | |
435 | } else { | |
436 | substream = midi->substream_input[internal_mpu]; | |
437 | mpu = internal_mpu; | |
438 | } | |
439 | ||
440 | if (substream == NULL) { | |
441 | continue; | |
442 | } | |
443 | ||
444 | if (midi->mode[mpu] & MPU401_MODE_INPUT_TRIGGER) { | |
445 | snd_rawmidi_receive(substream, &byte, 1); | |
446 | } | |
447 | } else { | |
448 | break; | |
449 | } | |
450 | } | |
451 | spin_unlock_irqrestore (&midi->virtual, flags); | |
452 | ||
453 | snd_wavefront_midi_output_write(card); | |
454 | } | |
455 | ||
456 | void | |
457 | snd_wavefront_midi_enable_virtual (snd_wavefront_card_t *card) | |
458 | ||
459 | { | |
460 | unsigned long flags; | |
461 | ||
462 | spin_lock_irqsave (&card->wavefront.midi.virtual, flags); | |
463 | card->wavefront.midi.isvirtual = 1; | |
464 | card->wavefront.midi.output_mpu = internal_mpu; | |
465 | card->wavefront.midi.input_mpu = internal_mpu; | |
466 | spin_unlock_irqrestore (&card->wavefront.midi.virtual, flags); | |
467 | } | |
468 | ||
469 | void | |
470 | snd_wavefront_midi_disable_virtual (snd_wavefront_card_t *card) | |
471 | ||
472 | { | |
473 | unsigned long flags; | |
474 | ||
475 | spin_lock_irqsave (&card->wavefront.midi.virtual, flags); | |
476 | // snd_wavefront_midi_input_close (card->ics2115_external_rmidi); | |
477 | // snd_wavefront_midi_output_close (card->ics2115_external_rmidi); | |
478 | card->wavefront.midi.isvirtual = 0; | |
479 | spin_unlock_irqrestore (&card->wavefront.midi.virtual, flags); | |
480 | } | |
481 | ||
1bff292e | 482 | int |
1da177e4 LT |
483 | snd_wavefront_midi_start (snd_wavefront_card_t *card) |
484 | ||
485 | { | |
486 | int ok, i; | |
487 | unsigned char rbuf[4], wbuf[4]; | |
488 | snd_wavefront_t *dev; | |
489 | snd_wavefront_midi_t *midi; | |
490 | ||
491 | dev = &card->wavefront; | |
492 | midi = &dev->midi; | |
493 | ||
494 | /* The ICS2115 MPU-401 interface doesn't do anything | |
495 | until its set into UART mode. | |
496 | */ | |
497 | ||
498 | /* XXX fix me - no hard timing loops allowed! */ | |
499 | ||
500 | for (i = 0; i < 30000 && !output_ready (midi); i++); | |
501 | ||
502 | if (!output_ready (midi)) { | |
503 | snd_printk ("MIDI interface not ready for command\n"); | |
504 | return -1; | |
505 | } | |
506 | ||
507 | /* Any interrupts received from now on | |
508 | are owned by the MIDI side of things. | |
509 | */ | |
510 | ||
511 | dev->interrupts_are_midi = 1; | |
512 | ||
513 | outb (UART_MODE_ON, midi->mpu_command_port); | |
514 | ||
515 | for (ok = 0, i = 50000; i > 0 && !ok; i--) { | |
516 | if (input_avail (midi)) { | |
517 | if (read_data (midi) == MPU_ACK) { | |
518 | ok = 1; | |
519 | break; | |
520 | } | |
521 | } | |
522 | } | |
523 | ||
524 | if (!ok) { | |
525 | snd_printk ("cannot set UART mode for MIDI interface"); | |
526 | dev->interrupts_are_midi = 0; | |
527 | return -1; | |
528 | } | |
529 | ||
530 | /* Route external MIDI to WaveFront synth (by default) */ | |
531 | ||
532 | if (snd_wavefront_cmd (dev, WFC_MISYNTH_ON, rbuf, wbuf)) { | |
533 | snd_printk ("can't enable MIDI-IN-2-synth routing.\n"); | |
534 | /* XXX error ? */ | |
535 | } | |
536 | ||
537 | /* Turn on Virtual MIDI, but first *always* turn it off, | |
25985edc | 538 | since otherwise consecutive reloads of the driver will |
1da177e4 LT |
539 | never cause the hardware to generate the initial "internal" or |
540 | "external" source bytes in the MIDI data stream. This | |
541 | is pretty important, since the internal hardware generally will | |
542 | be used to generate none or very little MIDI output, and | |
543 | thus the only source of MIDI data is actually external. Without | |
544 | the switch bytes, the driver will think it all comes from | |
545 | the internal interface. Duh. | |
546 | */ | |
547 | ||
548 | if (snd_wavefront_cmd (dev, WFC_VMIDI_OFF, rbuf, wbuf)) { | |
549 | snd_printk ("virtual MIDI mode not disabled\n"); | |
550 | return 0; /* We're OK, but missing the external MIDI dev */ | |
551 | } | |
552 | ||
553 | snd_wavefront_midi_enable_virtual (card); | |
554 | ||
555 | if (snd_wavefront_cmd (dev, WFC_VMIDI_ON, rbuf, wbuf)) { | |
556 | snd_printk ("cannot enable virtual MIDI mode.\n"); | |
557 | snd_wavefront_midi_disable_virtual (card); | |
558 | } | |
559 | return 0; | |
560 | } | |
561 | ||
542172f3 | 562 | struct snd_rawmidi_ops snd_wavefront_midi_output = |
1da177e4 LT |
563 | { |
564 | .open = snd_wavefront_midi_output_open, | |
565 | .close = snd_wavefront_midi_output_close, | |
566 | .trigger = snd_wavefront_midi_output_trigger, | |
567 | }; | |
568 | ||
542172f3 | 569 | struct snd_rawmidi_ops snd_wavefront_midi_input = |
1da177e4 LT |
570 | { |
571 | .open = snd_wavefront_midi_input_open, | |
572 | .close = snd_wavefront_midi_input_close, | |
573 | .trigger = snd_wavefront_midi_input_trigger, | |
574 | }; | |
575 |