source: GPL/trunk/alsa-kernel/drivers/mtpav.c@ 684

Last change on this file since 684 was 679, checked in by David Azarewicz, 5 years ago

Merge changes from Paul's uniaud32next branch.
File size: 19.1 KB
Line 
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");
56MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
57
58// io resources
59#define MTPAV_IOBASE 0x378
60#define MTPAV_IRQ 7
61#define MTPAV_MAX_PORTS 8
62
63static int index = SNDRV_DEFAULT_IDX1;
64static char *id = SNDRV_DEFAULT_STR1;
65static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
66static int irq = MTPAV_IRQ; /* 7, 5 */
67static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
68
69module_param(index, int, 0444);
70MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
71module_param(id, charp, 0444);
72MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
73module_param_hw(port, long, ioport, 0444);
74MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
75module_param_hw(irq, int, irq, 0444);
76MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
77module_param(hwports, int, 0444);
78MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
79
80static 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
114struct 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
123struct 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
166static 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
181static 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
206static 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
224static 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
233static 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
245static 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 */
271static 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 /*
290 snd_printk(KERN_DEBUG "new outport: 0x%x\n",
291 (unsigned int) portp->hwport);
292 */
293 if (!(outbyte & 0x80) && portp->running_status)
294 snd_mtpav_send_byte(mtp_card, portp->running_status);
295 }
296
297 // send data
298
299 do {
300 if (outbyte & 0x80)
301 portp->running_status = outbyte;
302
303 snd_mtpav_send_byte(mtp_card, outbyte);
304 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
305}
306
307static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
308{
309 struct mtpav *mtp_card = substream->rmidi->private_data;
310 struct mtpav_port *portp = &mtp_card->ports[substream->number];
311 unsigned long flags;
312
313 spin_lock_irqsave(&mtp_card->spinlock, flags);
314 snd_mtpav_output_port_write(mtp_card, portp, substream);
315 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
316}
317
318
319/*
320 * mtpav control
321 */
322
323static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
324{
325 u8 p;
326
327 for (p = 0; p < 8; p++) {
328 snd_mtpav_send_byte(chip, 0xf5);
329 snd_mtpav_send_byte(chip, p);
330 snd_mtpav_send_byte(chip, 0xfe);
331 }
332}
333
334/*
335 */
336
337static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
338{
339 struct mtpav *mtp_card = substream->rmidi->private_data;
340 struct mtpav_port *portp = &mtp_card->ports[substream->number];
341 unsigned long flags;
342
343 spin_lock_irqsave(&mtp_card->spinlock, flags);
344 portp->mode |= MTPAV_MODE_INPUT_OPENED;
345 portp->input = substream;
346 if (mtp_card->share_irq++ == 0)
347 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts
348 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
349 return 0;
350}
351
352/*
353 */
354
355static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
356{
357 struct mtpav *mtp_card = substream->rmidi->private_data;
358 struct mtpav_port *portp = &mtp_card->ports[substream->number];
359 unsigned long flags;
360
361 spin_lock_irqsave(&mtp_card->spinlock, flags);
362 portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
363 portp->input = NULL;
364 if (--mtp_card->share_irq == 0)
365 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
366 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
367 return 0;
368}
369
370/*
371 */
372
373static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
374{
375 struct mtpav *mtp_card = substream->rmidi->private_data;
376 struct mtpav_port *portp = &mtp_card->ports[substream->number];
377 unsigned long flags;
378
379 spin_lock_irqsave(&mtp_card->spinlock, flags);
380 if (up)
381 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
382 else
383 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
384 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
385
386}
387
388
389/*
390 * timer interrupt for outputs
391 */
392
393static void snd_mtpav_output_timer(struct timer_list *t)
394{
395 unsigned long flags;
396 struct mtpav *chip = from_timer(chip, t, timer);
397 int p;
398
399 spin_lock_irqsave(&chip->spinlock, flags);
400 /* reprogram timer */
401 mod_timer(&chip->timer, 1 + jiffies);
402 /* process each port */
403 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
404 struct mtpav_port *portp = &chip->ports[p];
405 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
406 snd_mtpav_output_port_write(chip, portp, portp->output);
407 }
408 spin_unlock_irqrestore(&chip->spinlock, flags);
409}
410
411/* spinlock held! */
412static void snd_mtpav_add_output_timer(struct mtpav *chip)
413{
414 mod_timer(&chip->timer, 1 + jiffies);
415}
416
417/* spinlock held! */
418static void snd_mtpav_remove_output_timer(struct mtpav *chip)
419{
420 del_timer(&chip->timer);
421}
422
423/*
424 */
425
426static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
427{
428 struct mtpav *mtp_card = substream->rmidi->private_data;
429 struct mtpav_port *portp = &mtp_card->ports[substream->number];
430 unsigned long flags;
431
432 spin_lock_irqsave(&mtp_card->spinlock, flags);
433 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
434 portp->output = substream;
435 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
436 return 0;
437};
438
439/*
440 */
441
442static int snd_mtpav_output_close(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 = NULL;
451 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
452 return 0;
453};
454
455/*
456 */
457
458static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
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 if (up) {
466 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
467 if (mtp_card->istimer++ == 0)
468 snd_mtpav_add_output_timer(mtp_card);
469 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
470 }
471 } else {
472 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
473 if (--mtp_card->istimer == 0)
474 snd_mtpav_remove_output_timer(mtp_card);
475 }
476 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
477
478 if (up)
479 snd_mtpav_output_write(substream);
480}
481
482/*
483 * midi interrupt for inputs
484 */
485
486static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
487{
488 struct mtpav_port *portp;
489
490 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
491 return;
492
493 portp = &mcrd->ports[mcrd->inmidiport];
494 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
495 snd_rawmidi_receive(portp->input, &inbyte, 1);
496}
497
498static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
499{
500 if (inbyte >= 0xf8) {
501 /* real-time midi code */
502 snd_mtpav_inmidi_process(mcrd, inbyte);
503 return;
504 }
505
506 if (mcrd->inmidistate == 0) { // awaiting command
507 if (inbyte == 0xf5) // MTP port #
508 mcrd->inmidistate = 1;
509 else
510 snd_mtpav_inmidi_process(mcrd, inbyte);
511 } else if (mcrd->inmidistate) {
512 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
513 mcrd->inmidistate = 0;
514 }
515}
516
517static void snd_mtpav_read_bytes(struct mtpav *mcrd)
518{
519 u8 clrread, setread;
520 u8 mtp_read_byte;
521 u8 sr, cbyt;
522 int i;
523
524 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
525
526 /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
527
528 if (!(sbyt & SIGS_BYTE))
529 return;
530
531 cbyt = snd_mtpav_getreg(mcrd, CREG);
532 clrread = cbyt & (SIGC_READ ^ 0xff);
533 setread = cbyt | SIGC_READ;
534
535 do {
536
537 mtp_read_byte = 0;
538 for (i = 0; i < 4; i++) {
539 snd_mtpav_mputreg(mcrd, CREG, setread);
540 sr = snd_mtpav_getreg(mcrd, SREG);
541 snd_mtpav_mputreg(mcrd, CREG, clrread);
542
543 sr &= SIGS_IN0 | SIGS_IN1;
544 sr >>= 4;
545 mtp_read_byte |= sr << (i * 2);
546 }
547
548 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
549
550 sbyt = snd_mtpav_getreg(mcrd, SREG);
551
552 } while (sbyt & SIGS_BYTE);
553}
554
555static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
556{
557 struct mtpav *mcard = dev_id;
558
559 spin_lock(&mcard->spinlock);
560 snd_mtpav_read_bytes(mcard);
561 spin_unlock(&mcard->spinlock);
562 return IRQ_HANDLED;
563}
564
565/*
566 * get ISA resources
567 */
568static int snd_mtpav_get_ISA(struct mtpav *mcard)
569{
570 if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
571 snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
572 return -EBUSY;
573 }
574 mcard->port = port;
575 if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
576 snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
577 return -EBUSY;
578 }
579 mcard->irq = irq;
580 return 0;
581}
582
583
584/*
585 */
586
587static const struct snd_rawmidi_ops snd_mtpav_output = {
588 .open = snd_mtpav_output_open,
589 .close = snd_mtpav_output_close,
590 .trigger = snd_mtpav_output_trigger,
591};
592
593static const struct snd_rawmidi_ops snd_mtpav_input = {
594 .open = snd_mtpav_input_open,
595 .close = snd_mtpav_input_close,
596 .trigger = snd_mtpav_input_trigger,
597};
598
599
600/*
601 * get RAWMIDI resources
602 */
603
604static void snd_mtpav_set_name(struct mtpav *chip,
605 struct snd_rawmidi_substream *substream)
606{
607 if (substream->number >= 0 && substream->number < chip->num_ports)
608 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
609 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
610 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
611 else if (substream->number == chip->num_ports * 2)
612 strcpy(substream->name, "MTP computer");
613 else if (substream->number == chip->num_ports * 2 + 1)
614 strcpy(substream->name, "MTP ADAT");
615 else
616 strcpy(substream->name, "MTP broadcast");
617}
618
619static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
620{
621 int rval;
622 struct snd_rawmidi *rawmidi;
623 struct snd_rawmidi_substream *substream;
624 struct list_head *list;
625
626 if (hwports < 1)
627 hwports = 1;
628 else if (hwports > 8)
629 hwports = 8;
630 mcard->num_ports = hwports;
631
632 if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
633 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
634 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
635 &mcard->rmidi)) < 0)
636 return rval;
637 rawmidi = mcard->rmidi;
638 rawmidi->private_data = mcard;
639
640 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
641 substream = list_entry(list, struct snd_rawmidi_substream, list);
642 snd_mtpav_set_name(mcard, substream);
643 substream->ops = &snd_mtpav_input;
644 }
645 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
646 substream = list_entry(list, struct snd_rawmidi_substream, list);
647 snd_mtpav_set_name(mcard, substream);
648 substream->ops = &snd_mtpav_output;
649 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
650 }
651 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
652 SNDRV_RAWMIDI_INFO_DUPLEX;
653 sprintf(rawmidi->name, "MTP AV MIDI");
654 return 0;
655}
656
657/*
658 */
659
660static void snd_mtpav_free(struct snd_card *card)
661{
662 struct mtpav *crd = card->private_data;
663 unsigned long flags;
664
665 spin_lock_irqsave(&crd->spinlock, flags);
666 if (crd->istimer > 0)
667 snd_mtpav_remove_output_timer(crd);
668 spin_unlock_irqrestore(&crd->spinlock, flags);
669 if (crd->irq >= 0)
670 free_irq(crd->irq, (void *)crd);
671 release_and_free_resource(crd->res_port);
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_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 card->private_free = snd_mtpav_free;
697
698 err = snd_mtpav_get_RAWMIDI(mtp_card);
699 if (err < 0)
700 goto __error;
701
702 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
703
704 err = snd_mtpav_get_ISA(mtp_card);
705 if (err < 0)
706 goto __error;
707
708 strcpy(card->driver, "MTPAV");
709 strcpy(card->shortname, "MTPAV on parallel port");
710 snprintf(card->longname, sizeof(card->longname),
711 "MTPAV on parallel port at 0x%lx", port);
712
713 snd_mtpav_portscan(mtp_card);
714
715 err = snd_card_register(mtp_card->card);
716 if (err < 0)
717 goto __error;
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 __error:
724 snd_card_free(card);
725 return err;
726}
727
728static int snd_mtpav_remove(struct platform_device *devptr)
729{
730 snd_card_free(platform_get_drvdata(devptr));
731 return 0;
732}
733
734#define SND_MTPAV_DRIVER "snd_mtpav"
735
736static struct platform_driver snd_mtpav_driver = {
737 .probe = snd_mtpav_probe,
738 .remove = snd_mtpav_remove,
739 .driver = {
740 .name = SND_MTPAV_DRIVER,
741 },
742};
743
744static int __init alsa_card_mtpav_init(void)
745{
746 int err;
747
748 if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
749 return err;
750
751 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
752 if (!IS_ERR(device)) {
753 if (platform_get_drvdata(device))
754 return 0;
755 platform_device_unregister(device);
756 err = -ENODEV;
757 } else
758 err = PTR_ERR(device);
759 platform_driver_unregister(&snd_mtpav_driver);
760 return err;
761}
762
763static void __exit alsa_card_mtpav_exit(void)
764{
765 platform_device_unregister(device);
766 platform_driver_unregister(&snd_mtpav_driver);
767}
768
769module_init(alsa_card_mtpav_init)
770module_exit(alsa_card_mtpav_exit)
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