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1/*
2 * MOTU Midi Timepiece ALSA Main routines
3 * Copyright by Michael T. Mayers (c) Jan 09, 2000
4 * mail: michael@tweakoz.com
5 * Thanks to John Galbraith
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 *
22 * This driver is for the 'Mark Of The Unicorn' (MOTU)
23 * MidiTimePiece AV multiport MIDI interface
24 *
25 * IOPORTS
26 * -------
27 * 8 MIDI Ins and 8 MIDI outs
28 * Video Sync In (BNC), Word Sync Out (BNC),
29 * ADAT Sync Out (DB9)
30 * SMPTE in/out (1/4")
31 * 2 programmable pedal/footswitch inputs and 4 programmable MIDI controller knobs.
32 * Macintosh RS422 serial port
33 * RS422 "network" port for ganging multiple MTP's
34 * PC Parallel Port ( which this driver currently uses )
35 *
36 * MISC FEATURES
37 * -------------
38 * Hardware MIDI routing, merging, and filtering
39 * MIDI Synchronization to Video, ADAT, SMPTE and other Clock sources
40 * 128 'scene' memories, recallable from MIDI program change
41 *
42 *
43 * ChangeLog
44 * Jun 11 2001 Takashi Iwai <tiwai@suse.de>
45 * - Recoded & debugged
46 * - Added timer interrupt for midi outputs
47 * - hwports is between 1 and 8, which specifies the number of hardware ports.
48 * The three global ports, computer, adat and broadcast ports, are created
49 * always after h/w and remote ports.
50 *
51 */
52
53#include <linux/init.h>
54#include <linux/interrupt.h>
55#include <linux/module.h>
56#include <linux/err.h>
57#include <linux/platform_device.h>
58#include <linux/ioport.h>
59#include <linux/io.h>
60#include <linux/moduleparam.h>
61#include <sound/core.h>
62#include <sound/initval.h>
63#include <sound/rawmidi.h>
64#include <linux/delay.h>
65
66/*
67 * globals
68 */
69MODULE_AUTHOR("Michael T. Mayers");
70MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
71MODULE_LICENSE("GPL");
72MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
73
74// io resources
75#define MTPAV_IOBASE 0x378
76#define MTPAV_IRQ 7
77#define MTPAV_MAX_PORTS 8
78
79static int index = SNDRV_DEFAULT_IDX1;
80static char *id = SNDRV_DEFAULT_STR1;
81static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
82static int irq = MTPAV_IRQ; /* 7, 5 */
83static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
84
85module_param(index, int, 0444);
86MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
87module_param(id, charp, 0444);
88MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
89module_param(port, long, 0444);
90MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
91module_param(irq, int, 0444);
92MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
93module_param(hwports, int, 0444);
94MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
95
96static struct platform_device *device;
97
98/*
99 * defines
100 */
101//#define USE_FAKE_MTP // don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
102
103// parallel port usage masks
104#define SIGS_BYTE 0x08
105#define SIGS_RFD 0x80
106#define SIGS_IRQ 0x40
107#define SIGS_IN0 0x10
108#define SIGS_IN1 0x20
109
110#define SIGC_WRITE 0x04
111#define SIGC_READ 0x08
112#define SIGC_INTEN 0x10
113
114#define DREG 0
115#define SREG 1
116#define CREG 2
117
118//
119#define MTPAV_MODE_INPUT_OPENED 0x01
120#define MTPAV_MODE_OUTPUT_OPENED 0x02
121#define MTPAV_MODE_INPUT_TRIGGERED 0x04
122#define MTPAV_MODE_OUTPUT_TRIGGERED 0x08
123
124#define NUMPORTS (0x12+1)
125
126
127/*
128 */
129
130struct mtpav_port {
131 u8 number;
132 u8 hwport;
133 u8 mode;
134 u8 running_status;
135 struct snd_rawmidi_substream *input;
136 struct snd_rawmidi_substream *output;
137};
138
139struct mtpav {
140 struct snd_card *card;
141 unsigned long port;
142 struct resource *res_port;
143 int irq; /* interrupt (for inputs) */
144 spinlock_t spinlock;
145 int share_irq; /* number of accesses to input interrupts */
146 int istimer; /* number of accesses to timer interrupts */
147 struct timer_list timer; /* timer interrupts for outputs */
148 struct snd_rawmidi *rmidi;
149 int num_ports; /* number of hw ports (1-8) */
150 struct mtpav_port ports[NUMPORTS]; /* all ports including computer, adat and bc */
151
152 u32 inmidiport; /* selected input midi port */
153 u32 inmidistate; /* during midi command 0xf5 */
154
155 u32 outmidihwport; /* selected output midi hw port */
156};
157
158
159/*
160 * possible hardware ports (selected by 0xf5 port message)
161 * 0x00 all ports
162 * 0x01 .. 0x08 this MTP's ports 1..8
163 * 0x09 .. 0x10 networked MTP's ports (9..16)
164 * 0x11 networked MTP's computer port
165 * 0x63 to ADAT
166 *
167 * mappig:
168 * subdevice 0 - (X-1) ports
169 * X - (2*X-1) networked ports
170 * X computer
171 * X+1 ADAT
172 * X+2 all ports
173 *
174 * where X = chip->num_ports
175 */
176
177#define MTPAV_PIDX_COMPUTER 0
178#define MTPAV_PIDX_ADAT 1
179#define MTPAV_PIDX_BROADCAST 2
180
181
182static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
183{
184 if (subdev < 0)
185 return 0x01; /* invalid - use port 0 as default */
186 else if (subdev < chip->num_ports)
187 return subdev + 1; /* single mtp port */
188 else if (subdev < chip->num_ports * 2)
189 return subdev - chip->num_ports + 0x09; /* remote port */
190 else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
191 return 0x11; /* computer port */
192 else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
193 return 0x63; /* ADAT */
194 return 0; /* all ports */
195}
196
197static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
198{
199 int p;
200 if (hwport <= 0x00) /* all ports */
201 return chip->num_ports + MTPAV_PIDX_BROADCAST;
202 else if (hwport <= 0x08) { /* single port */
203 p = hwport - 1;
204 if (p >= chip->num_ports)
205 p = 0;
206 return p;
207 } else if (hwport <= 0x10) { /* remote port */
208 p = hwport - 0x09 + chip->num_ports;
209 if (p >= chip->num_ports * 2)
210 p = chip->num_ports;
211 return p;
212 } else if (hwport == 0x11) /* computer port */
213 return chip->num_ports + MTPAV_PIDX_COMPUTER;
214 else /* ADAT */
215 return chip->num_ports + MTPAV_PIDX_ADAT;
216}
217
218
219/*
220 */
221
222static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
223{
224 u8 rval = 0;
225
226 if (reg == SREG) {
227 rval = inb(chip->port + SREG);
228 rval = (rval & 0xf8);
229 } else if (reg == CREG) {
230 rval = inb(chip->port + CREG);
231 rval = (rval & 0x1c);
232 }
233
234 return rval;
235}
236
237/*
238 */
239
240static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
241{
242 if (reg == DREG || reg == CREG)
243 outb(val, chip->port + reg);
244}
245
246/*
247 */
248
249static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
250{
251 int counts = 10000;
252 u8 sbyte;
253
254 sbyte = snd_mtpav_getreg(chip, SREG);
255 while (!(sbyte & SIGS_RFD) && counts--) {
256 sbyte = snd_mtpav_getreg(chip, SREG);
257 udelay(10);
258 }
259}
260
261static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
262{
263 u8 tcbyt;
264 u8 clrwrite;
265 u8 setwrite;
266
267 snd_mtpav_wait_rfdhi(chip);
268
269 /////////////////
270
271 tcbyt = snd_mtpav_getreg(chip, CREG);
272 clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
273 setwrite = tcbyt | SIGC_WRITE;
274
275 snd_mtpav_mputreg(chip, DREG, byte);
276 snd_mtpav_mputreg(chip, CREG, clrwrite); // clear write bit
277
278 snd_mtpav_mputreg(chip, CREG, setwrite); // set write bit
279
280}
281
282
283/*
284 */
285
286/* call this with spin lock held */
287static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
288 struct mtpav_port *portp,
289 struct snd_rawmidi_substream *substream)
290{
291 u8 outbyte;
292
293 // Get the outbyte first, so we can emulate running status if
294 // necessary
295 if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
296 return;
297
298 // send port change command if necessary
299
300 if (portp->hwport != mtp_card->outmidihwport) {
301 mtp_card->outmidihwport = portp->hwport;
302
303 snd_mtpav_send_byte(mtp_card, 0xf5);
304 snd_mtpav_send_byte(mtp_card, portp->hwport);
305 /*
306 snd_printk(KERN_DEBUG "new outport: 0x%x\n",
307 (unsigned int) portp->hwport);
308 */
309 if (!(outbyte & 0x80) && portp->running_status)
310 snd_mtpav_send_byte(mtp_card, portp->running_status);
311 }
312
313 // send data
314
315 do {
316 if (outbyte & 0x80)
317 portp->running_status = outbyte;
318
319 snd_mtpav_send_byte(mtp_card, outbyte);
320 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
321}
322
323static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
324{
325 struct mtpav *mtp_card = substream->rmidi->private_data;
326 struct mtpav_port *portp = &mtp_card->ports[substream->number];
327 unsigned long flags;
328
329 spin_lock_irqsave(&mtp_card->spinlock, flags);
330 snd_mtpav_output_port_write(mtp_card, portp, substream);
331 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
332}
333
334
335/*
336 * mtpav control
337 */
338
339static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
340{
341 u8 p;
342
343 for (p = 0; p < 8; p++) {
344 snd_mtpav_send_byte(chip, 0xf5);
345 snd_mtpav_send_byte(chip, p);
346 snd_mtpav_send_byte(chip, 0xfe);
347 }
348}
349
350/*
351 */
352
353static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
354{
355 struct mtpav *mtp_card = substream->rmidi->private_data;
356 struct mtpav_port *portp = &mtp_card->ports[substream->number];
357 unsigned long flags;
358
359 spin_lock_irqsave(&mtp_card->spinlock, flags);
360 portp->mode |= MTPAV_MODE_INPUT_OPENED;
361 portp->input = substream;
362 if (mtp_card->share_irq++ == 0)
363 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts
364 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
365 return 0;
366}
367
368/*
369 */
370
371static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
372{
373 struct mtpav *mtp_card = substream->rmidi->private_data;
374 struct mtpav_port *portp = &mtp_card->ports[substream->number];
375 unsigned long flags;
376
377 spin_lock_irqsave(&mtp_card->spinlock, flags);
378 portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
379 portp->input = NULL;
380 if (--mtp_card->share_irq == 0)
381 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
382 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
383 return 0;
384}
385
386/*
387 */
388
389static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
390{
391 struct mtpav *mtp_card = substream->rmidi->private_data;
392 struct mtpav_port *portp = &mtp_card->ports[substream->number];
393 unsigned long flags;
394
395 spin_lock_irqsave(&mtp_card->spinlock, flags);
396 if (up)
397 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
398 else
399 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
400 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
401
402}
403
404
405/*
406 * timer interrupt for outputs
407 */
408
409static void snd_mtpav_output_timer(unsigned long data)
410{
411 unsigned long flags;
412 struct mtpav *chip = (struct mtpav *)data;
413 int p;
414
415 spin_lock_irqsave(&chip->spinlock, flags);
416 /* reprogram timer */
417 mod_timer(&chip->timer, 1 + jiffies);
418 /* process each port */
419 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
420 struct mtpav_port *portp = &chip->ports[p];
421 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
422 snd_mtpav_output_port_write(chip, portp, portp->output);
423 }
424 spin_unlock_irqrestore(&chip->spinlock, flags);
425}
426
427/* spinlock held! */
428static void snd_mtpav_add_output_timer(struct mtpav *chip)
429{
430 mod_timer(&chip->timer, 1 + jiffies);
431}
432
433/* spinlock held! */
434static void snd_mtpav_remove_output_timer(struct mtpav *chip)
435{
436 del_timer(&chip->timer);
437}
438
439/*
440 */
441
442static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
443{
444 struct mtpav *mtp_card = substream->rmidi->private_data;
445 struct mtpav_port *portp = &mtp_card->ports[substream->number];
446 unsigned long flags;
447
448 spin_lock_irqsave(&mtp_card->spinlock, flags);
449 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
450 portp->output = substream;
451 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
452 return 0;
453};
454
455/*
456 */
457
458static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
459{
460 struct mtpav *mtp_card = substream->rmidi->private_data;
461 struct mtpav_port *portp = &mtp_card->ports[substream->number];
462 unsigned long flags;
463
464 spin_lock_irqsave(&mtp_card->spinlock, flags);
465 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
466 portp->output = NULL;
467 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
468 return 0;
469};
470
471/*
472 */
473
474static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
475{
476 struct mtpav *mtp_card = substream->rmidi->private_data;
477 struct mtpav_port *portp = &mtp_card->ports[substream->number];
478 unsigned long flags;
479
480 spin_lock_irqsave(&mtp_card->spinlock, flags);
481 if (up) {
482 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
483 if (mtp_card->istimer++ == 0)
484 snd_mtpav_add_output_timer(mtp_card);
485 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
486 }
487 } else {
488 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
489 if (--mtp_card->istimer == 0)
490 snd_mtpav_remove_output_timer(mtp_card);
491 }
492 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
493
494 if (up)
495 snd_mtpav_output_write(substream);
496}
497
498/*
499 * midi interrupt for inputs
500 */
501
502static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
503{
504 struct mtpav_port *portp;
505
506 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
507 return;
508
509 portp = &mcrd->ports[mcrd->inmidiport];
510 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
511 snd_rawmidi_receive(portp->input, &inbyte, 1);
512}
513
514static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
515{
516 if (inbyte >= 0xf8) {
517 /* real-time midi code */
518 snd_mtpav_inmidi_process(mcrd, inbyte);
519 return;
520 }
521
522 if (mcrd->inmidistate == 0) { // awaiting command
523 if (inbyte == 0xf5) // MTP port #
524 mcrd->inmidistate = 1;
525 else
526 snd_mtpav_inmidi_process(mcrd, inbyte);
527 } else if (mcrd->inmidistate) {
528 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
529 mcrd->inmidistate = 0;
530 }
531}
532
533static void snd_mtpav_read_bytes(struct mtpav *mcrd)
534{
535 u8 clrread, setread;
536 u8 mtp_read_byte;
537 u8 sr, cbyt;
538 int i;
539
540 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
541
542 /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
543
544 if (!(sbyt & SIGS_BYTE))
545 return;
546
547 cbyt = snd_mtpav_getreg(mcrd, CREG);
548 clrread = cbyt & (SIGC_READ ^ 0xff);
549 setread = cbyt | SIGC_READ;
550
551 do {
552
553 mtp_read_byte = 0;
554 for (i = 0; i < 4; i++) {
555 snd_mtpav_mputreg(mcrd, CREG, setread);
556 sr = snd_mtpav_getreg(mcrd, SREG);
557 snd_mtpav_mputreg(mcrd, CREG, clrread);
558
559 sr &= SIGS_IN0 | SIGS_IN1;
560 sr >>= 4;
561 mtp_read_byte |= sr << (i * 2);
562 }
563
564 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
565
566 sbyt = snd_mtpav_getreg(mcrd, SREG);
567
568 } while (sbyt & SIGS_BYTE);
569}
570
571static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
572{
573 struct mtpav *mcard = dev_id;
574
575 spin_lock(&mcard->spinlock);
576 snd_mtpav_read_bytes(mcard);
577 spin_unlock(&mcard->spinlock);
578 return IRQ_HANDLED;
579}
580
581/*
582 * get ISA resources
583 */
584static int snd_mtpav_get_ISA(struct mtpav *mcard)
585{
586 if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
587 snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
588 return -EBUSY;
589 }
590 mcard->port = port;
591 if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
592 snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
593 return -EBUSY;
594 }
595 mcard->irq = irq;
596 return 0;
597}
598
599
600/*
601 */
602
603static struct snd_rawmidi_ops snd_mtpav_output = {
604 .open = snd_mtpav_output_open,
605 .close = snd_mtpav_output_close,
606 .trigger = snd_mtpav_output_trigger,
607};
608
609static struct snd_rawmidi_ops snd_mtpav_input = {
610 .open = snd_mtpav_input_open,
611 .close = snd_mtpav_input_close,
612 .trigger = snd_mtpav_input_trigger,
613};
614
615
616/*
617 * get RAWMIDI resources
618 */
619
620static void snd_mtpav_set_name(struct mtpav *chip,
621 struct snd_rawmidi_substream *substream)
622{
623 if (substream->number >= 0 && substream->number < chip->num_ports)
624 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
625 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
626 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
627 else if (substream->number == chip->num_ports * 2)
628 strcpy(substream->name, "MTP computer");
629 else if (substream->number == chip->num_ports * 2 + 1)
630 strcpy(substream->name, "MTP ADAT");
631 else
632 strcpy(substream->name, "MTP broadcast");
633}
634
635static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
636{
637 int rval;
638 struct snd_rawmidi *rawmidi;
639 struct snd_rawmidi_substream *substream;
640 struct list_head *list;
641
642 if (hwports < 1)
643 hwports = 1;
644 else if (hwports > 8)
645 hwports = 8;
646 mcard->num_ports = hwports;
647
648 if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
649 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
650 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
651 &mcard->rmidi)) < 0)
652 return rval;
653 rawmidi = mcard->rmidi;
654 rawmidi->private_data = mcard;
655
656 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
657 substream = list_entry(list, struct snd_rawmidi_substream, list);
658 snd_mtpav_set_name(mcard, substream);
659 substream->ops = &snd_mtpav_input;
660 }
661 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
662 substream = list_entry(list, struct snd_rawmidi_substream, list);
663 snd_mtpav_set_name(mcard, substream);
664 substream->ops = &snd_mtpav_output;
665 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
666 }
667 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
668 SNDRV_RAWMIDI_INFO_DUPLEX;
669 sprintf(rawmidi->name, "MTP AV MIDI");
670 return 0;
671}
672
673/*
674 */
675
676static void snd_mtpav_free(struct snd_card *card)
677{
678 struct mtpav *crd = card->private_data;
679 unsigned long flags;
680
681 spin_lock_irqsave(&crd->spinlock, flags);
682 if (crd->istimer > 0)
683 snd_mtpav_remove_output_timer(crd);
684 spin_unlock_irqrestore(&crd->spinlock, flags);
685 if (crd->irq >= 0)
686 free_irq(crd->irq, (void *)crd);
687 release_and_free_resource(crd->res_port);
688}
689
690/*
691 */
692static int snd_mtpav_probe(struct platform_device *dev)
693{
694 struct snd_card *card;
695 int err;
696 struct mtpav *mtp_card;
697
698 err = snd_card_new(&dev->dev, index, id, THIS_MODULE,
699 sizeof(*mtp_card), &card);
700 if (err < 0)
701 return err;
702
703 mtp_card = card->private_data;
704 spin_lock_init(&mtp_card->spinlock);
705 mtp_card->card = card;
706 mtp_card->irq = -1;
707 mtp_card->share_irq = 0;
708 mtp_card->inmidistate = 0;
709 mtp_card->outmidihwport = 0xffffffff;
710 setup_timer(&mtp_card->timer, snd_mtpav_output_timer,
711 (unsigned long) mtp_card);
712
713 card->private_free = snd_mtpav_free;
714
715 err = snd_mtpav_get_RAWMIDI(mtp_card);
716 if (err < 0)
717 goto __error;
718
719 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
720
721 err = snd_mtpav_get_ISA(mtp_card);
722 if (err < 0)
723 goto __error;
724
725 strcpy(card->driver, "MTPAV");
726 strcpy(card->shortname, "MTPAV on parallel port");
727 snprintf(card->longname, sizeof(card->longname),
728 "MTPAV on parallel port at 0x%lx", port);
729
730 snd_mtpav_portscan(mtp_card);
731
732 err = snd_card_register(mtp_card->card);
733 if (err < 0)
734 goto __error;
735
736 platform_set_drvdata(dev, card);
737 printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
738 return 0;
739
740 __error:
741 snd_card_free(card);
742 return err;
743}
744
745static int snd_mtpav_remove(struct platform_device *devptr)
746{
747 snd_card_free(platform_get_drvdata(devptr));
748 return 0;
749}
750
751#define SND_MTPAV_DRIVER "snd_mtpav"
752
753static struct platform_driver snd_mtpav_driver = {
754 .probe = snd_mtpav_probe,
755 .remove = snd_mtpav_remove,
756 .driver = {
757 .name = SND_MTPAV_DRIVER,
758 },
759};
760
761static int __init alsa_card_mtpav_init(void)
762{
763 int err;
764
765 if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
766 return err;
767
768 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
769 if (!IS_ERR(device)) {
770 if (platform_get_drvdata(device))
771 return 0;
772 platform_device_unregister(device);
773 err = -ENODEV;
774 } else
775 err = PTR_ERR(device);
776 platform_driver_unregister(&snd_mtpav_driver);
777 return err;
778}
779
780static void __exit alsa_card_mtpav_exit(void)
781{
782 platform_device_unregister(device);
783 platform_driver_unregister(&snd_mtpav_driver);
784}
785
786module_init(alsa_card_mtpav_init)
787module_exit(alsa_card_mtpav_exit)
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
50/*
51 * globals
52 */
53MODULE_AUTHOR("Michael T. Mayers");
54MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
55MODULE_LICENSE("GPL");
56
57// io resources
58#define MTPAV_IOBASE 0x378
59#define MTPAV_IRQ 7
60#define MTPAV_MAX_PORTS 8
61
62static int index = SNDRV_DEFAULT_IDX1;
63static char *id = SNDRV_DEFAULT_STR1;
64static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
65static int irq = MTPAV_IRQ; /* 7, 5 */
66static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
67
68module_param(index, int, 0444);
69MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
70module_param(id, charp, 0444);
71MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
72module_param_hw(port, long, ioport, 0444);
73MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
74module_param_hw(irq, int, irq, 0444);
75MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
76module_param(hwports, int, 0444);
77MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
78
79static struct platform_device *device;
80
81/*
82 * defines
83 */
84//#define USE_FAKE_MTP // don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
85
86// parallel port usage masks
87#define SIGS_BYTE 0x08
88#define SIGS_RFD 0x80
89#define SIGS_IRQ 0x40
90#define SIGS_IN0 0x10
91#define SIGS_IN1 0x20
92
93#define SIGC_WRITE 0x04
94#define SIGC_READ 0x08
95#define SIGC_INTEN 0x10
96
97#define DREG 0
98#define SREG 1
99#define CREG 2
100
101//
102#define MTPAV_MODE_INPUT_OPENED 0x01
103#define MTPAV_MODE_OUTPUT_OPENED 0x02
104#define MTPAV_MODE_INPUT_TRIGGERED 0x04
105#define MTPAV_MODE_OUTPUT_TRIGGERED 0x08
106
107#define NUMPORTS (0x12+1)
108
109
110/*
111 */
112
113struct mtpav_port {
114 u8 number;
115 u8 hwport;
116 u8 mode;
117 u8 running_status;
118 struct snd_rawmidi_substream *input;
119 struct snd_rawmidi_substream *output;
120};
121
122struct mtpav {
123 struct snd_card *card;
124 unsigned long port;
125 struct resource *res_port;
126 int irq; /* interrupt (for inputs) */
127 spinlock_t spinlock;
128 int share_irq; /* number of accesses to input interrupts */
129 int istimer; /* number of accesses to timer interrupts */
130 struct timer_list timer; /* timer interrupts for outputs */
131 struct snd_rawmidi *rmidi;
132 int num_ports; /* number of hw ports (1-8) */
133 struct mtpav_port ports[NUMPORTS]; /* all ports including computer, adat and bc */
134
135 u32 inmidiport; /* selected input midi port */
136 u32 inmidistate; /* during midi command 0xf5 */
137
138 u32 outmidihwport; /* selected output midi hw port */
139};
140
141
142/*
143 * possible hardware ports (selected by 0xf5 port message)
144 * 0x00 all ports
145 * 0x01 .. 0x08 this MTP's ports 1..8
146 * 0x09 .. 0x10 networked MTP's ports (9..16)
147 * 0x11 networked MTP's computer port
148 * 0x63 to ADAT
149 *
150 * mappig:
151 * subdevice 0 - (X-1) ports
152 * X - (2*X-1) networked ports
153 * X computer
154 * X+1 ADAT
155 * X+2 all ports
156 *
157 * where X = chip->num_ports
158 */
159
160#define MTPAV_PIDX_COMPUTER 0
161#define MTPAV_PIDX_ADAT 1
162#define MTPAV_PIDX_BROADCAST 2
163
164
165static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
166{
167 if (subdev < 0)
168 return 0x01; /* invalid - use port 0 as default */
169 else if (subdev < chip->num_ports)
170 return subdev + 1; /* single mtp port */
171 else if (subdev < chip->num_ports * 2)
172 return subdev - chip->num_ports + 0x09; /* remote port */
173 else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
174 return 0x11; /* computer port */
175 else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
176 return 0x63; /* ADAT */
177 return 0; /* all ports */
178}
179
180static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
181{
182 int p;
183 if (hwport <= 0x00) /* all ports */
184 return chip->num_ports + MTPAV_PIDX_BROADCAST;
185 else if (hwport <= 0x08) { /* single port */
186 p = hwport - 1;
187 if (p >= chip->num_ports)
188 p = 0;
189 return p;
190 } else if (hwport <= 0x10) { /* remote port */
191 p = hwport - 0x09 + chip->num_ports;
192 if (p >= chip->num_ports * 2)
193 p = chip->num_ports;
194 return p;
195 } else if (hwport == 0x11) /* computer port */
196 return chip->num_ports + MTPAV_PIDX_COMPUTER;
197 else /* ADAT */
198 return chip->num_ports + MTPAV_PIDX_ADAT;
199}
200
201
202/*
203 */
204
205static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
206{
207 u8 rval = 0;
208
209 if (reg == SREG) {
210 rval = inb(chip->port + SREG);
211 rval = (rval & 0xf8);
212 } else if (reg == CREG) {
213 rval = inb(chip->port + CREG);
214 rval = (rval & 0x1c);
215 }
216
217 return rval;
218}
219
220/*
221 */
222
223static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
224{
225 if (reg == DREG || reg == CREG)
226 outb(val, chip->port + reg);
227}
228
229/*
230 */
231
232static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
233{
234 int counts = 10000;
235 u8 sbyte;
236
237 sbyte = snd_mtpav_getreg(chip, SREG);
238 while (!(sbyte & SIGS_RFD) && counts--) {
239 sbyte = snd_mtpav_getreg(chip, SREG);
240 udelay(10);
241 }
242}
243
244static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
245{
246 u8 tcbyt;
247 u8 clrwrite;
248 u8 setwrite;
249
250 snd_mtpav_wait_rfdhi(chip);
251
252 /////////////////
253
254 tcbyt = snd_mtpav_getreg(chip, CREG);
255 clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
256 setwrite = tcbyt | SIGC_WRITE;
257
258 snd_mtpav_mputreg(chip, DREG, byte);
259 snd_mtpav_mputreg(chip, CREG, clrwrite); // clear write bit
260
261 snd_mtpav_mputreg(chip, CREG, setwrite); // set write bit
262
263}
264
265
266/*
267 */
268
269/* call this with spin lock held */
270static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
271 struct mtpav_port *portp,
272 struct snd_rawmidi_substream *substream)
273{
274 u8 outbyte;
275
276 // Get the outbyte first, so we can emulate running status if
277 // necessary
278 if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
279 return;
280
281 // send port change command if necessary
282
283 if (portp->hwport != mtp_card->outmidihwport) {
284 mtp_card->outmidihwport = portp->hwport;
285
286 snd_mtpav_send_byte(mtp_card, 0xf5);
287 snd_mtpav_send_byte(mtp_card, portp->hwport);
288 /*
289 snd_printk(KERN_DEBUG "new outport: 0x%x\n",
290 (unsigned int) portp->hwport);
291 */
292 if (!(outbyte & 0x80) && portp->running_status)
293 snd_mtpav_send_byte(mtp_card, portp->running_status);
294 }
295
296 // send data
297
298 do {
299 if (outbyte & 0x80)
300 portp->running_status = outbyte;
301
302 snd_mtpav_send_byte(mtp_card, outbyte);
303 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
304}
305
306static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
307{
308 struct mtpav *mtp_card = substream->rmidi->private_data;
309 struct mtpav_port *portp = &mtp_card->ports[substream->number];
310 unsigned long flags;
311
312 spin_lock_irqsave(&mtp_card->spinlock, flags);
313 snd_mtpav_output_port_write(mtp_card, portp, substream);
314 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
315}
316
317
318/*
319 * mtpav control
320 */
321
322static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
323{
324 u8 p;
325
326 for (p = 0; p < 8; p++) {
327 snd_mtpav_send_byte(chip, 0xf5);
328 snd_mtpav_send_byte(chip, p);
329 snd_mtpav_send_byte(chip, 0xfe);
330 }
331}
332
333/*
334 */
335
336static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
337{
338 struct mtpav *mtp_card = substream->rmidi->private_data;
339 struct mtpav_port *portp = &mtp_card->ports[substream->number];
340 unsigned long flags;
341
342 spin_lock_irqsave(&mtp_card->spinlock, flags);
343 portp->mode |= MTPAV_MODE_INPUT_OPENED;
344 portp->input = substream;
345 if (mtp_card->share_irq++ == 0)
346 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts
347 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
348 return 0;
349}
350
351/*
352 */
353
354static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
355{
356 struct mtpav *mtp_card = substream->rmidi->private_data;
357 struct mtpav_port *portp = &mtp_card->ports[substream->number];
358 unsigned long flags;
359
360 spin_lock_irqsave(&mtp_card->spinlock, flags);
361 portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
362 portp->input = NULL;
363 if (--mtp_card->share_irq == 0)
364 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
365 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
366 return 0;
367}
368
369/*
370 */
371
372static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
373{
374 struct mtpav *mtp_card = substream->rmidi->private_data;
375 struct mtpav_port *portp = &mtp_card->ports[substream->number];
376 unsigned long flags;
377
378 spin_lock_irqsave(&mtp_card->spinlock, flags);
379 if (up)
380 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
381 else
382 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
383 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
384
385}
386
387
388/*
389 * timer interrupt for outputs
390 */
391
392static void snd_mtpav_output_timer(struct timer_list *t)
393{
394 unsigned long flags;
395 struct mtpav *chip = from_timer(chip, t, timer);
396 int p;
397
398 spin_lock_irqsave(&chip->spinlock, flags);
399 /* reprogram timer */
400 mod_timer(&chip->timer, 1 + jiffies);
401 /* process each port */
402 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
403 struct mtpav_port *portp = &chip->ports[p];
404 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
405 snd_mtpav_output_port_write(chip, portp, portp->output);
406 }
407 spin_unlock_irqrestore(&chip->spinlock, flags);
408}
409
410/* spinlock held! */
411static void snd_mtpav_add_output_timer(struct mtpav *chip)
412{
413 mod_timer(&chip->timer, 1 + jiffies);
414}
415
416/* spinlock held! */
417static void snd_mtpav_remove_output_timer(struct mtpav *chip)
418{
419 del_timer(&chip->timer);
420}
421
422/*
423 */
424
425static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
426{
427 struct mtpav *mtp_card = substream->rmidi->private_data;
428 struct mtpav_port *portp = &mtp_card->ports[substream->number];
429 unsigned long flags;
430
431 spin_lock_irqsave(&mtp_card->spinlock, flags);
432 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
433 portp->output = substream;
434 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
435 return 0;
436};
437
438/*
439 */
440
441static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
442{
443 struct mtpav *mtp_card = substream->rmidi->private_data;
444 struct mtpav_port *portp = &mtp_card->ports[substream->number];
445 unsigned long flags;
446
447 spin_lock_irqsave(&mtp_card->spinlock, flags);
448 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
449 portp->output = NULL;
450 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
451 return 0;
452};
453
454/*
455 */
456
457static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
458{
459 struct mtpav *mtp_card = substream->rmidi->private_data;
460 struct mtpav_port *portp = &mtp_card->ports[substream->number];
461 unsigned long flags;
462
463 spin_lock_irqsave(&mtp_card->spinlock, flags);
464 if (up) {
465 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
466 if (mtp_card->istimer++ == 0)
467 snd_mtpav_add_output_timer(mtp_card);
468 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
469 }
470 } else {
471 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
472 if (--mtp_card->istimer == 0)
473 snd_mtpav_remove_output_timer(mtp_card);
474 }
475 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
476
477 if (up)
478 snd_mtpav_output_write(substream);
479}
480
481/*
482 * midi interrupt for inputs
483 */
484
485static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
486{
487 struct mtpav_port *portp;
488
489 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
490 return;
491
492 portp = &mcrd->ports[mcrd->inmidiport];
493 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
494 snd_rawmidi_receive(portp->input, &inbyte, 1);
495}
496
497static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
498{
499 if (inbyte >= 0xf8) {
500 /* real-time midi code */
501 snd_mtpav_inmidi_process(mcrd, inbyte);
502 return;
503 }
504
505 if (mcrd->inmidistate == 0) { // awaiting command
506 if (inbyte == 0xf5) // MTP port #
507 mcrd->inmidistate = 1;
508 else
509 snd_mtpav_inmidi_process(mcrd, inbyte);
510 } else if (mcrd->inmidistate) {
511 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
512 mcrd->inmidistate = 0;
513 }
514}
515
516static void snd_mtpav_read_bytes(struct mtpav *mcrd)
517{
518 u8 clrread, setread;
519 u8 mtp_read_byte;
520 u8 sr, cbyt;
521 int i;
522
523 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
524
525 /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
526
527 if (!(sbyt & SIGS_BYTE))
528 return;
529
530 cbyt = snd_mtpav_getreg(mcrd, CREG);
531 clrread = cbyt & (SIGC_READ ^ 0xff);
532 setread = cbyt | SIGC_READ;
533
534 do {
535
536 mtp_read_byte = 0;
537 for (i = 0; i < 4; i++) {
538 snd_mtpav_mputreg(mcrd, CREG, setread);
539 sr = snd_mtpav_getreg(mcrd, SREG);
540 snd_mtpav_mputreg(mcrd, CREG, clrread);
541
542 sr &= SIGS_IN0 | SIGS_IN1;
543 sr >>= 4;
544 mtp_read_byte |= sr << (i * 2);
545 }
546
547 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
548
549 sbyt = snd_mtpav_getreg(mcrd, SREG);
550
551 } while (sbyt & SIGS_BYTE);
552}
553
554static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
555{
556 struct mtpav *mcard = dev_id;
557
558 spin_lock(&mcard->spinlock);
559 snd_mtpav_read_bytes(mcard);
560 spin_unlock(&mcard->spinlock);
561 return IRQ_HANDLED;
562}
563
564/*
565 * get ISA resources
566 */
567static int snd_mtpav_get_ISA(struct mtpav *mcard)
568{
569 mcard->res_port = devm_request_region(mcard->card->dev, port, 3,
570 "MotuMTPAV MIDI");
571 if (!mcard->res_port) {
572 snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
573 return -EBUSY;
574 }
575 mcard->port = port;
576 if (devm_request_irq(mcard->card->dev, irq, snd_mtpav_irqh, 0,
577 "MOTU MTPAV", mcard)) {
578 snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
579 return -EBUSY;
580 }
581 mcard->irq = irq;
582 return 0;
583}
584
585
586/*
587 */
588
589static const struct snd_rawmidi_ops snd_mtpav_output = {
590 .open = snd_mtpav_output_open,
591 .close = snd_mtpav_output_close,
592 .trigger = snd_mtpav_output_trigger,
593};
594
595static const struct snd_rawmidi_ops snd_mtpav_input = {
596 .open = snd_mtpav_input_open,
597 .close = snd_mtpav_input_close,
598 .trigger = snd_mtpav_input_trigger,
599};
600
601
602/*
603 * get RAWMIDI resources
604 */
605
606static void snd_mtpav_set_name(struct mtpav *chip,
607 struct snd_rawmidi_substream *substream)
608{
609 if (substream->number >= 0 && substream->number < chip->num_ports)
610 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
611 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
612 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
613 else if (substream->number == chip->num_ports * 2)
614 strcpy(substream->name, "MTP computer");
615 else if (substream->number == chip->num_ports * 2 + 1)
616 strcpy(substream->name, "MTP ADAT");
617 else
618 strcpy(substream->name, "MTP broadcast");
619}
620
621static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
622{
623 int rval;
624 struct snd_rawmidi *rawmidi;
625 struct snd_rawmidi_substream *substream;
626 struct list_head *list;
627
628 if (hwports < 1)
629 hwports = 1;
630 else if (hwports > 8)
631 hwports = 8;
632 mcard->num_ports = hwports;
633
634 rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
635 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
636 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
637 &mcard->rmidi);
638 if (rval < 0)
639 return rval;
640 rawmidi = mcard->rmidi;
641 rawmidi->private_data = mcard;
642
643 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
644 substream = list_entry(list, struct snd_rawmidi_substream, list);
645 snd_mtpav_set_name(mcard, substream);
646 substream->ops = &snd_mtpav_input;
647 }
648 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
649 substream = list_entry(list, struct snd_rawmidi_substream, list);
650 snd_mtpav_set_name(mcard, substream);
651 substream->ops = &snd_mtpav_output;
652 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
653 }
654 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
655 SNDRV_RAWMIDI_INFO_DUPLEX;
656 sprintf(rawmidi->name, "MTP AV MIDI");
657 return 0;
658}
659
660/*
661 */
662
663static void snd_mtpav_free(struct snd_card *card)
664{
665 struct mtpav *crd = card->private_data;
666 unsigned long flags;
667
668 spin_lock_irqsave(&crd->spinlock, flags);
669 if (crd->istimer > 0)
670 snd_mtpav_remove_output_timer(crd);
671 spin_unlock_irqrestore(&crd->spinlock, flags);
672}
673
674/*
675 */
676static int snd_mtpav_probe(struct platform_device *dev)
677{
678 struct snd_card *card;
679 int err;
680 struct mtpav *mtp_card;
681
682 err = snd_devm_card_new(&dev->dev, index, id, THIS_MODULE,
683 sizeof(*mtp_card), &card);
684 if (err < 0)
685 return err;
686
687 mtp_card = card->private_data;
688 spin_lock_init(&mtp_card->spinlock);
689 mtp_card->card = card;
690 mtp_card->irq = -1;
691 mtp_card->share_irq = 0;
692 mtp_card->inmidistate = 0;
693 mtp_card->outmidihwport = 0xffffffff;
694 timer_setup(&mtp_card->timer, snd_mtpav_output_timer, 0);
695
696 err = snd_mtpav_get_RAWMIDI(mtp_card);
697 if (err < 0)
698 return err;
699
700 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
701
702 err = snd_mtpav_get_ISA(mtp_card);
703 if (err < 0)
704 return err;
705
706 strcpy(card->driver, "MTPAV");
707 strcpy(card->shortname, "MTPAV on parallel port");
708 snprintf(card->longname, sizeof(card->longname),
709 "MTPAV on parallel port at 0x%lx", port);
710
711 snd_mtpav_portscan(mtp_card);
712
713 err = snd_card_register(mtp_card->card);
714 if (err < 0)
715 return err;
716
717 card->private_free = snd_mtpav_free;
718
719 platform_set_drvdata(dev, card);
720 printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
721 return 0;
722}
723
724#define SND_MTPAV_DRIVER "snd_mtpav"
725
726static struct platform_driver snd_mtpav_driver = {
727 .probe = snd_mtpav_probe,
728 .driver = {
729 .name = SND_MTPAV_DRIVER,
730 },
731};
732
733static int __init alsa_card_mtpav_init(void)
734{
735 int err;
736
737 err = platform_driver_register(&snd_mtpav_driver);
738 if (err < 0)
739 return err;
740
741 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
742 if (!IS_ERR(device)) {
743 if (platform_get_drvdata(device))
744 return 0;
745 platform_device_unregister(device);
746 err = -ENODEV;
747 } else
748 err = PTR_ERR(device);
749 platform_driver_unregister(&snd_mtpav_driver);
750 return err;
751}
752
753static void __exit alsa_card_mtpav_exit(void)
754{
755 platform_device_unregister(device);
756 platform_driver_unregister(&snd_mtpav_driver);
757}
758
759module_init(alsa_card_mtpav_init)
760module_exit(alsa_card_mtpav_exit)