1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * MOTU Midi Timepiece ALSA Main routines
4 * Copyright by Michael T. Mayers (c) Jan 09, 2000
5 * mail: michael@tweakoz.com
6 * Thanks to John Galbraith
7 *
8 * This driver is for the 'Mark Of The Unicorn' (MOTU)
9 * MidiTimePiece AV multiport MIDI interface
10 *
11 * IOPORTS
12 * -------
13 * 8 MIDI Ins and 8 MIDI outs
14 * Video Sync In (BNC), Word Sync Out (BNC),
15 * ADAT Sync Out (DB9)
16 * SMPTE in/out (1/4")
17 * 2 programmable pedal/footswitch inputs and 4 programmable MIDI controller knobs.
18 * Macintosh RS422 serial port
19 * RS422 "network" port for ganging multiple MTP's
20 * PC Parallel Port ( which this driver currently uses )
21 *
22 * MISC FEATURES
23 * -------------
24 * Hardware MIDI routing, merging, and filtering
25 * MIDI Synchronization to Video, ADAT, SMPTE and other Clock sources
26 * 128 'scene' memories, recallable from MIDI program change
27 *
28 * ChangeLog
29 * Jun 11 2001 Takashi Iwai <tiwai@suse.de>
30 * - Recoded & debugged
31 * - Added timer interrupt for midi outputs
32 * - hwports is between 1 and 8, which specifies the number of hardware ports.
33 * The three global ports, computer, adat and broadcast ports, are created
34 * always after h/w and remote ports.
35 */
36
37 #include <linux/init.h>
38 #include <linux/interrupt.h>
39 #include <linux/module.h>
40 #include <linux/err.h>
41 #include <linux/platform_device.h>
42 #include <linux/ioport.h>
43 #include <linux/io.h>
44 #include <linux/moduleparam.h>
45 #include <sound/core.h>
46 #include <sound/initval.h>
47 #include <sound/rawmidi.h>
48 #include <linux/delay.h>
49 #include <linux/string.h>
50
51 /*
52 * globals
53 */
54 MODULE_AUTHOR("Michael T. Mayers");
55 MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
56 MODULE_LICENSE("GPL");
57
58 // io resources
59 #define MTPAV_IOBASE 0x378
60 #define MTPAV_IRQ 7
61 #define MTPAV_MAX_PORTS 8
62
63 static int index = SNDRV_DEFAULT_IDX1;
64 static char *id = SNDRV_DEFAULT_STR1;
65 static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
66 static int irq = MTPAV_IRQ; /* 7, 5 */
67 static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
68
69 module_param(index, int, 0444);
70 MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
71 module_param(id, charp, 0444);
72 MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
73 module_param_hw(port, long, ioport, 0444);
74 MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
75 module_param_hw(irq, int, irq, 0444);
76 MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
77 module_param(hwports, int, 0444);
78 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
79
80 static struct platform_device *device;
81
82 /*
83 * defines
84 */
85 //#define USE_FAKE_MTP // don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
86
87 // parallel port usage masks
88 #define SIGS_BYTE 0x08
89 #define SIGS_RFD 0x80
90 #define SIGS_IRQ 0x40
91 #define SIGS_IN0 0x10
92 #define SIGS_IN1 0x20
93
94 #define SIGC_WRITE 0x04
95 #define SIGC_READ 0x08
96 #define SIGC_INTEN 0x10
97
98 #define DREG 0
99 #define SREG 1
100 #define CREG 2
101
102 //
103 #define MTPAV_MODE_INPUT_OPENED 0x01
104 #define MTPAV_MODE_OUTPUT_OPENED 0x02
105 #define MTPAV_MODE_INPUT_TRIGGERED 0x04
106 #define MTPAV_MODE_OUTPUT_TRIGGERED 0x08
107
108 #define NUMPORTS (0x12+1)
109
110
111 /*
112 */
113
114 struct mtpav_port {
115 u8 number;
116 u8 hwport;
117 u8 mode;
118 u8 running_status;
119 struct snd_rawmidi_substream *input;
120 struct snd_rawmidi_substream *output;
121 };
122
123 struct mtpav {
124 struct snd_card *card;
125 unsigned long port;
126 struct resource *res_port;
127 int irq; /* interrupt (for inputs) */
128 spinlock_t spinlock;
129 int share_irq; /* number of accesses to input interrupts */
130 int istimer; /* number of accesses to timer interrupts */
131 struct timer_list timer; /* timer interrupts for outputs */
132 struct snd_rawmidi *rmidi;
133 int num_ports; /* number of hw ports (1-8) */
134 struct mtpav_port ports[NUMPORTS]; /* all ports including computer, adat and bc */
135
136 u32 inmidiport; /* selected input midi port */
137 u32 inmidistate; /* during midi command 0xf5 */
138
139 u32 outmidihwport; /* selected output midi hw port */
140 };
141
142
143 /*
144 * possible hardware ports (selected by 0xf5 port message)
145 * 0x00 all ports
146 * 0x01 .. 0x08 this MTP's ports 1..8
147 * 0x09 .. 0x10 networked MTP's ports (9..16)
148 * 0x11 networked MTP's computer port
149 * 0x63 to ADAT
150 *
151 * mappig:
152 * subdevice 0 - (X-1) ports
153 * X - (2*X-1) networked ports
154 * X computer
155 * X+1 ADAT
156 * X+2 all ports
157 *
158 * where X = chip->num_ports
159 */
160
161 #define MTPAV_PIDX_COMPUTER 0
162 #define MTPAV_PIDX_ADAT 1
163 #define MTPAV_PIDX_BROADCAST 2
164
165
translate_subdevice_to_hwport(struct mtpav * chip,int subdev)166 static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
167 {
168 if (subdev < 0)
169 return 0x01; /* invalid - use port 0 as default */
170 else if (subdev < chip->num_ports)
171 return subdev + 1; /* single mtp port */
172 else if (subdev < chip->num_ports * 2)
173 return subdev - chip->num_ports + 0x09; /* remote port */
174 else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
175 return 0x11; /* computer port */
176 else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
177 return 0x63; /* ADAT */
178 return 0; /* all ports */
179 }
180
translate_hwport_to_subdevice(struct mtpav * chip,int hwport)181 static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
182 {
183 int p;
184 if (hwport <= 0x00) /* all ports */
185 return chip->num_ports + MTPAV_PIDX_BROADCAST;
186 else if (hwport <= 0x08) { /* single port */
187 p = hwport - 1;
188 if (p >= chip->num_ports)
189 p = 0;
190 return p;
191 } else if (hwport <= 0x10) { /* remote port */
192 p = hwport - 0x09 + chip->num_ports;
193 if (p >= chip->num_ports * 2)
194 p = chip->num_ports;
195 return p;
196 } else if (hwport == 0x11) /* computer port */
197 return chip->num_ports + MTPAV_PIDX_COMPUTER;
198 else /* ADAT */
199 return chip->num_ports + MTPAV_PIDX_ADAT;
200 }
201
202
203 /*
204 */
205
snd_mtpav_getreg(struct mtpav * chip,u16 reg)206 static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
207 {
208 u8 rval = 0;
209
210 if (reg == SREG) {
211 rval = inb(chip->port + SREG);
212 rval = (rval & 0xf8);
213 } else if (reg == CREG) {
214 rval = inb(chip->port + CREG);
215 rval = (rval & 0x1c);
216 }
217
218 return rval;
219 }
220
221 /*
222 */
223
snd_mtpav_mputreg(struct mtpav * chip,u16 reg,u8 val)224 static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
225 {
226 if (reg == DREG || reg == CREG)
227 outb(val, chip->port + reg);
228 }
229
230 /*
231 */
232
snd_mtpav_wait_rfdhi(struct mtpav * chip)233 static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
234 {
235 int counts = 10000;
236 u8 sbyte;
237
238 sbyte = snd_mtpav_getreg(chip, SREG);
239 while (!(sbyte & SIGS_RFD) && counts--) {
240 sbyte = snd_mtpav_getreg(chip, SREG);
241 udelay(10);
242 }
243 }
244
snd_mtpav_send_byte(struct mtpav * chip,u8 byte)245 static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
246 {
247 u8 tcbyt;
248 u8 clrwrite;
249 u8 setwrite;
250
251 snd_mtpav_wait_rfdhi(chip);
252
253 /////////////////
254
255 tcbyt = snd_mtpav_getreg(chip, CREG);
256 clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
257 setwrite = tcbyt | SIGC_WRITE;
258
259 snd_mtpav_mputreg(chip, DREG, byte);
260 snd_mtpav_mputreg(chip, CREG, clrwrite); // clear write bit
261
262 snd_mtpav_mputreg(chip, CREG, setwrite); // set write bit
263
264 }
265
266
267 /*
268 */
269
270 /* call this with spin lock held */
snd_mtpav_output_port_write(struct mtpav * mtp_card,struct mtpav_port * portp,struct snd_rawmidi_substream * substream)271 static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
272 struct mtpav_port *portp,
273 struct snd_rawmidi_substream *substream)
274 {
275 u8 outbyte;
276
277 // Get the outbyte first, so we can emulate running status if
278 // necessary
279 if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
280 return;
281
282 // send port change command if necessary
283
284 if (portp->hwport != mtp_card->outmidihwport) {
285 mtp_card->outmidihwport = portp->hwport;
286
287 snd_mtpav_send_byte(mtp_card, 0xf5);
288 snd_mtpav_send_byte(mtp_card, portp->hwport);
289 if (!(outbyte & 0x80) && portp->running_status)
290 snd_mtpav_send_byte(mtp_card, portp->running_status);
291 }
292
293 // send data
294
295 do {
296 if (outbyte & 0x80)
297 portp->running_status = outbyte;
298
299 snd_mtpav_send_byte(mtp_card, outbyte);
300 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
301 }
302
snd_mtpav_output_write(struct snd_rawmidi_substream * substream)303 static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
304 {
305 struct mtpav *mtp_card = substream->rmidi->private_data;
306 struct mtpav_port *portp = &mtp_card->ports[substream->number];
307 unsigned long flags;
308
309 spin_lock_irqsave(&mtp_card->spinlock, flags);
310 snd_mtpav_output_port_write(mtp_card, portp, substream);
311 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
312 }
313
314
315 /*
316 * mtpav control
317 */
318
snd_mtpav_portscan(struct mtpav * chip)319 static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
320 {
321 u8 p;
322
323 for (p = 0; p < 8; p++) {
324 snd_mtpav_send_byte(chip, 0xf5);
325 snd_mtpav_send_byte(chip, p);
326 snd_mtpav_send_byte(chip, 0xfe);
327 }
328 }
329
330 /*
331 */
332
snd_mtpav_input_open(struct snd_rawmidi_substream * substream)333 static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
334 {
335 struct mtpav *mtp_card = substream->rmidi->private_data;
336 struct mtpav_port *portp = &mtp_card->ports[substream->number];
337 unsigned long flags;
338
339 spin_lock_irqsave(&mtp_card->spinlock, flags);
340 portp->mode |= MTPAV_MODE_INPUT_OPENED;
341 portp->input = substream;
342 if (mtp_card->share_irq++ == 0)
343 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts
344 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
345 return 0;
346 }
347
348 /*
349 */
350
snd_mtpav_input_close(struct snd_rawmidi_substream * substream)351 static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
352 {
353 struct mtpav *mtp_card = substream->rmidi->private_data;
354 struct mtpav_port *portp = &mtp_card->ports[substream->number];
355 unsigned long flags;
356
357 spin_lock_irqsave(&mtp_card->spinlock, flags);
358 portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
359 portp->input = NULL;
360 if (--mtp_card->share_irq == 0)
361 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
362 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
363 return 0;
364 }
365
366 /*
367 */
368
snd_mtpav_input_trigger(struct snd_rawmidi_substream * substream,int up)369 static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
370 {
371 struct mtpav *mtp_card = substream->rmidi->private_data;
372 struct mtpav_port *portp = &mtp_card->ports[substream->number];
373 unsigned long flags;
374
375 spin_lock_irqsave(&mtp_card->spinlock, flags);
376 if (up)
377 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
378 else
379 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
380 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
381
382 }
383
384
385 /*
386 * timer interrupt for outputs
387 */
388
snd_mtpav_output_timer(struct timer_list * t)389 static void snd_mtpav_output_timer(struct timer_list *t)
390 {
391 unsigned long flags;
392 struct mtpav *chip = timer_container_of(chip, t, timer);
393 int p;
394
395 spin_lock_irqsave(&chip->spinlock, flags);
396 /* reprogram timer */
397 mod_timer(&chip->timer, 1 + jiffies);
398 /* process each port */
399 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
400 struct mtpav_port *portp = &chip->ports[p];
401 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
402 snd_mtpav_output_port_write(chip, portp, portp->output);
403 }
404 spin_unlock_irqrestore(&chip->spinlock, flags);
405 }
406
407 /* spinlock held! */
snd_mtpav_add_output_timer(struct mtpav * chip)408 static void snd_mtpav_add_output_timer(struct mtpav *chip)
409 {
410 mod_timer(&chip->timer, 1 + jiffies);
411 }
412
413 /* spinlock held! */
snd_mtpav_remove_output_timer(struct mtpav * chip)414 static void snd_mtpav_remove_output_timer(struct mtpav *chip)
415 {
416 timer_delete(&chip->timer);
417 }
418
419 /*
420 */
421
snd_mtpav_output_open(struct snd_rawmidi_substream * substream)422 static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
423 {
424 struct mtpav *mtp_card = substream->rmidi->private_data;
425 struct mtpav_port *portp = &mtp_card->ports[substream->number];
426 unsigned long flags;
427
428 spin_lock_irqsave(&mtp_card->spinlock, flags);
429 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
430 portp->output = substream;
431 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
432 return 0;
433 };
434
435 /*
436 */
437
snd_mtpav_output_close(struct snd_rawmidi_substream * substream)438 static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
439 {
440 struct mtpav *mtp_card = substream->rmidi->private_data;
441 struct mtpav_port *portp = &mtp_card->ports[substream->number];
442 unsigned long flags;
443
444 spin_lock_irqsave(&mtp_card->spinlock, flags);
445 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
446 portp->output = NULL;
447 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
448 return 0;
449 };
450
451 /*
452 */
453
snd_mtpav_output_trigger(struct snd_rawmidi_substream * substream,int up)454 static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
455 {
456 struct mtpav *mtp_card = substream->rmidi->private_data;
457 struct mtpav_port *portp = &mtp_card->ports[substream->number];
458 unsigned long flags;
459
460 spin_lock_irqsave(&mtp_card->spinlock, flags);
461 if (up) {
462 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
463 if (mtp_card->istimer++ == 0)
464 snd_mtpav_add_output_timer(mtp_card);
465 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
466 }
467 } else {
468 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
469 if (--mtp_card->istimer == 0)
470 snd_mtpav_remove_output_timer(mtp_card);
471 }
472 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
473
474 if (up)
475 snd_mtpav_output_write(substream);
476 }
477
478 /*
479 * midi interrupt for inputs
480 */
481
snd_mtpav_inmidi_process(struct mtpav * mcrd,u8 inbyte)482 static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
483 {
484 struct mtpav_port *portp;
485
486 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
487 return;
488
489 portp = &mcrd->ports[mcrd->inmidiport];
490 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
491 snd_rawmidi_receive(portp->input, &inbyte, 1);
492 }
493
snd_mtpav_inmidi_h(struct mtpav * mcrd,u8 inbyte)494 static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
495 {
496 if (inbyte >= 0xf8) {
497 /* real-time midi code */
498 snd_mtpav_inmidi_process(mcrd, inbyte);
499 return;
500 }
501
502 if (mcrd->inmidistate == 0) { // awaiting command
503 if (inbyte == 0xf5) // MTP port #
504 mcrd->inmidistate = 1;
505 else
506 snd_mtpav_inmidi_process(mcrd, inbyte);
507 } else if (mcrd->inmidistate) {
508 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
509 mcrd->inmidistate = 0;
510 }
511 }
512
snd_mtpav_read_bytes(struct mtpav * mcrd)513 static void snd_mtpav_read_bytes(struct mtpav *mcrd)
514 {
515 u8 clrread, setread;
516 u8 mtp_read_byte;
517 u8 sr, cbyt;
518 int i;
519
520 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
521
522 if (!(sbyt & SIGS_BYTE))
523 return;
524
525 cbyt = snd_mtpav_getreg(mcrd, CREG);
526 clrread = cbyt & (SIGC_READ ^ 0xff);
527 setread = cbyt | SIGC_READ;
528
529 do {
530
531 mtp_read_byte = 0;
532 for (i = 0; i < 4; i++) {
533 snd_mtpav_mputreg(mcrd, CREG, setread);
534 sr = snd_mtpav_getreg(mcrd, SREG);
535 snd_mtpav_mputreg(mcrd, CREG, clrread);
536
537 sr &= SIGS_IN0 | SIGS_IN1;
538 sr >>= 4;
539 mtp_read_byte |= sr << (i * 2);
540 }
541
542 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
543
544 sbyt = snd_mtpav_getreg(mcrd, SREG);
545
546 } while (sbyt & SIGS_BYTE);
547 }
548
snd_mtpav_irqh(int irq,void * dev_id)549 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
550 {
551 struct mtpav *mcard = dev_id;
552
553 spin_lock(&mcard->spinlock);
554 snd_mtpav_read_bytes(mcard);
555 spin_unlock(&mcard->spinlock);
556 return IRQ_HANDLED;
557 }
558
559 /*
560 * get ISA resources
561 */
snd_mtpav_get_ISA(struct mtpav * mcard)562 static int snd_mtpav_get_ISA(struct mtpav *mcard)
563 {
564 mcard->res_port = devm_request_region(mcard->card->dev, port, 3,
565 "MotuMTPAV MIDI");
566 if (!mcard->res_port) {
567 dev_err(mcard->card->dev, "MTVAP port 0x%lx is busy\n", port);
568 return -EBUSY;
569 }
570 mcard->port = port;
571 if (devm_request_irq(mcard->card->dev, irq, snd_mtpav_irqh, 0,
572 "MOTU MTPAV", mcard)) {
573 dev_err(mcard->card->dev, "MTVAP IRQ %d busy\n", irq);
574 return -EBUSY;
575 }
576 mcard->irq = irq;
577 return 0;
578 }
579
580
581 /*
582 */
583
584 static const struct snd_rawmidi_ops snd_mtpav_output = {
585 .open = snd_mtpav_output_open,
586 .close = snd_mtpav_output_close,
587 .trigger = snd_mtpav_output_trigger,
588 };
589
590 static const struct snd_rawmidi_ops snd_mtpav_input = {
591 .open = snd_mtpav_input_open,
592 .close = snd_mtpav_input_close,
593 .trigger = snd_mtpav_input_trigger,
594 };
595
596
597 /*
598 * get RAWMIDI resources
599 */
600
snd_mtpav_set_name(struct mtpav * chip,struct snd_rawmidi_substream * substream)601 static void snd_mtpav_set_name(struct mtpav *chip,
602 struct snd_rawmidi_substream *substream)
603 {
604 if (substream->number >= 0 && substream->number < chip->num_ports)
605 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
606 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
607 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
608 else if (substream->number == chip->num_ports * 2)
609 strscpy(substream->name, "MTP computer");
610 else if (substream->number == chip->num_ports * 2 + 1)
611 strscpy(substream->name, "MTP ADAT");
612 else
613 strscpy(substream->name, "MTP broadcast");
614 }
615
snd_mtpav_get_RAWMIDI(struct mtpav * mcard)616 static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
617 {
618 int rval;
619 struct snd_rawmidi *rawmidi;
620 struct snd_rawmidi_substream *substream;
621 struct list_head *list;
622
623 if (hwports < 1)
624 hwports = 1;
625 else if (hwports > 8)
626 hwports = 8;
627 mcard->num_ports = hwports;
628
629 rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
630 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
631 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
632 &mcard->rmidi);
633 if (rval < 0)
634 return rval;
635 rawmidi = mcard->rmidi;
636 rawmidi->private_data = mcard;
637
638 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
639 substream = list_entry(list, struct snd_rawmidi_substream, list);
640 snd_mtpav_set_name(mcard, substream);
641 substream->ops = &snd_mtpav_input;
642 }
643 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
644 substream = list_entry(list, struct snd_rawmidi_substream, list);
645 snd_mtpav_set_name(mcard, substream);
646 substream->ops = &snd_mtpav_output;
647 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
648 }
649 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
650 SNDRV_RAWMIDI_INFO_DUPLEX;
651 sprintf(rawmidi->name, "MTP AV MIDI");
652 return 0;
653 }
654
655 /*
656 */
657
snd_mtpav_free(struct snd_card * card)658 static void snd_mtpav_free(struct snd_card *card)
659 {
660 struct mtpav *crd = card->private_data;
661 unsigned long flags;
662
663 spin_lock_irqsave(&crd->spinlock, flags);
664 if (crd->istimer > 0)
665 snd_mtpav_remove_output_timer(crd);
666 spin_unlock_irqrestore(&crd->spinlock, flags);
667 }
668
669 /*
670 */
snd_mtpav_probe(struct platform_device * dev)671 static int snd_mtpav_probe(struct platform_device *dev)
672 {
673 struct snd_card *card;
674 int err;
675 struct mtpav *mtp_card;
676
677 err = snd_devm_card_new(&dev->dev, index, id, THIS_MODULE,
678 sizeof(*mtp_card), &card);
679 if (err < 0)
680 return err;
681
682 mtp_card = card->private_data;
683 spin_lock_init(&mtp_card->spinlock);
684 mtp_card->card = card;
685 mtp_card->irq = -1;
686 mtp_card->share_irq = 0;
687 mtp_card->inmidistate = 0;
688 mtp_card->outmidihwport = 0xffffffff;
689 timer_setup(&mtp_card->timer, snd_mtpav_output_timer, 0);
690
691 err = snd_mtpav_get_RAWMIDI(mtp_card);
692 if (err < 0)
693 return err;
694
695 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
696
697 err = snd_mtpav_get_ISA(mtp_card);
698 if (err < 0)
699 return err;
700
701 strscpy(card->driver, "MTPAV");
702 strscpy(card->shortname, "MTPAV on parallel port");
703 snprintf(card->longname, sizeof(card->longname),
704 "MTPAV on parallel port at 0x%lx", port);
705
706 snd_mtpav_portscan(mtp_card);
707
708 err = snd_card_register(mtp_card->card);
709 if (err < 0)
710 return err;
711
712 card->private_free = snd_mtpav_free;
713
714 platform_set_drvdata(dev, card);
715 dev_info(card->dev,
716 "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n",
717 irq, port);
718 return 0;
719 }
720
721 #define SND_MTPAV_DRIVER "snd_mtpav"
722
723 static struct platform_driver snd_mtpav_driver = {
724 .probe = snd_mtpav_probe,
725 .driver = {
726 .name = SND_MTPAV_DRIVER,
727 },
728 };
729
alsa_card_mtpav_init(void)730 static int __init alsa_card_mtpav_init(void)
731 {
732 int err;
733
734 err = platform_driver_register(&snd_mtpav_driver);
735 if (err < 0)
736 return err;
737
738 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
739 if (!IS_ERR(device)) {
740 if (platform_get_drvdata(device))
741 return 0;
742 platform_device_unregister(device);
743 err = -ENODEV;
744 } else
745 err = PTR_ERR(device);
746 platform_driver_unregister(&snd_mtpav_driver);
747 return err;
748 }
749
alsa_card_mtpav_exit(void)750 static void __exit alsa_card_mtpav_exit(void)
751 {
752 platform_device_unregister(device);
753 platform_driver_unregister(&snd_mtpav_driver);
754 }
755
756 module_init(alsa_card_mtpav_init)
757 module_exit(alsa_card_mtpav_exit)
758