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drm/atomic-helper: document drm_atomic_helper_check() restrictions
[drm/drm-misc.git] / sound / drivers / mtpav.c
blob946184a2a7589152891b5eccf64ce70c02102b40
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 */
53 MODULE_AUTHOR("Michael T. Mayers");
54 MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
55 MODULE_LICENSE("GPL");
56
57 // io resources
58 #define MTPAV_IOBASE 0x378
59 #define MTPAV_IRQ 7
60 #define MTPAV_MAX_PORTS 8
61
62 static int index = SNDRV_DEFAULT_IDX1;
63 static char *id = SNDRV_DEFAULT_STR1;
64 static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
65 static int irq = MTPAV_IRQ; /* 7, 5 */
66 static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
67
68 module_param(index, int, 0444);
69 MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
70 module_param(id, charp, 0444);
71 MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
72 module_param_hw(port, long, ioport, 0444);
73 MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
74 module_param_hw(irq, int, irq, 0444);
75 MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
76 module_param(hwports, int, 0444);
77 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
78
79 static 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
113 struct 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
122 struct 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
165 static 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
180 static 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
205 static 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
223 static 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
232 static 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
244 static 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 */
270 static 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 if (!(outbyte & 0x80) && portp->running_status)
289 snd_mtpav_send_byte(mtp_card, portp->running_status);
290 }
291
292 // send data
293
294 do {
295 if (outbyte & 0x80)
296 portp->running_status = outbyte;
297
298 snd_mtpav_send_byte(mtp_card, outbyte);
299 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
300 }
301
302 static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
303 {
304 struct mtpav *mtp_card = substream->rmidi->private_data;
305 struct mtpav_port *portp = &mtp_card->ports[substream->number];
306 unsigned long flags;
307
308 spin_lock_irqsave(&mtp_card->spinlock, flags);
309 snd_mtpav_output_port_write(mtp_card, portp, substream);
310 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
311 }
312
313
314 /*
315 * mtpav control
316 */
317
318 static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
319 {
320 u8 p;
321
322 for (p = 0; p < 8; p++) {
323 snd_mtpav_send_byte(chip, 0xf5);
324 snd_mtpav_send_byte(chip, p);
325 snd_mtpav_send_byte(chip, 0xfe);
326 }
327 }
328
329 /*
330 */
331
332 static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
333 {
334 struct mtpav *mtp_card = substream->rmidi->private_data;
335 struct mtpav_port *portp = &mtp_card->ports[substream->number];
336 unsigned long flags;
337
338 spin_lock_irqsave(&mtp_card->spinlock, flags);
339 portp->mode |= MTPAV_MODE_INPUT_OPENED;
340 portp->input = substream;
341 if (mtp_card->share_irq++ == 0)
342 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts
343 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
344 return 0;
345 }
346
347 /*
348 */
349
350 static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
351 {
352 struct mtpav *mtp_card = substream->rmidi->private_data;
353 struct mtpav_port *portp = &mtp_card->ports[substream->number];
354 unsigned long flags;
355
356 spin_lock_irqsave(&mtp_card->spinlock, flags);
357 portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
358 portp->input = NULL;
359 if (--mtp_card->share_irq == 0)
360 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
361 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
362 return 0;
363 }
364
365 /*
366 */
367
368 static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
369 {
370 struct mtpav *mtp_card = substream->rmidi->private_data;
371 struct mtpav_port *portp = &mtp_card->ports[substream->number];
372 unsigned long flags;
373
374 spin_lock_irqsave(&mtp_card->spinlock, flags);
375 if (up)
376 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
377 else
378 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
379 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
380
381 }
382
383
384 /*
385 * timer interrupt for outputs
386 */
387
388 static void snd_mtpav_output_timer(struct timer_list *t)
389 {
390 unsigned long flags;
391 struct mtpav *chip = from_timer(chip, t, timer);
392 int p;
393
394 spin_lock_irqsave(&chip->spinlock, flags);
395 /* reprogram timer */
396 mod_timer(&chip->timer, 1 + jiffies);
397 /* process each port */
398 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
399 struct mtpav_port *portp = &chip->ports[p];
400 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
401 snd_mtpav_output_port_write(chip, portp, portp->output);
402 }
403 spin_unlock_irqrestore(&chip->spinlock, flags);
404 }
405
406 /* spinlock held! */
407 static void snd_mtpav_add_output_timer(struct mtpav *chip)
408 {
409 mod_timer(&chip->timer, 1 + jiffies);
410 }
411
412 /* spinlock held! */
413 static void snd_mtpav_remove_output_timer(struct mtpav *chip)
414 {
415 del_timer(&chip->timer);
416 }
417
418 /*
419 */
420
421 static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
422 {
423 struct mtpav *mtp_card = substream->rmidi->private_data;
424 struct mtpav_port *portp = &mtp_card->ports[substream->number];
425 unsigned long flags;
426
427 spin_lock_irqsave(&mtp_card->spinlock, flags);
428 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
429 portp->output = substream;
430 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
431 return 0;
432 };
433
434 /*
435 */
436
437 static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
438 {
439 struct mtpav *mtp_card = substream->rmidi->private_data;
440 struct mtpav_port *portp = &mtp_card->ports[substream->number];
441 unsigned long flags;
442
443 spin_lock_irqsave(&mtp_card->spinlock, flags);
444 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
445 portp->output = NULL;
446 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
447 return 0;
448 };
449
450 /*
451 */
452
453 static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
454 {
455 struct mtpav *mtp_card = substream->rmidi->private_data;
456 struct mtpav_port *portp = &mtp_card->ports[substream->number];
457 unsigned long flags;
458
459 spin_lock_irqsave(&mtp_card->spinlock, flags);
460 if (up) {
461 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
462 if (mtp_card->istimer++ == 0)
463 snd_mtpav_add_output_timer(mtp_card);
464 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
465 }
466 } else {
467 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
468 if (--mtp_card->istimer == 0)
469 snd_mtpav_remove_output_timer(mtp_card);
470 }
471 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
472
473 if (up)
474 snd_mtpav_output_write(substream);
475 }
476
477 /*
478 * midi interrupt for inputs
479 */
480
481 static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
482 {
483 struct mtpav_port *portp;
484
485 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
486 return;
487
488 portp = &mcrd->ports[mcrd->inmidiport];
489 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
490 snd_rawmidi_receive(portp->input, &inbyte, 1);
491 }
492
493 static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
494 {
495 if (inbyte >= 0xf8) {
496 /* real-time midi code */
497 snd_mtpav_inmidi_process(mcrd, inbyte);
498 return;
499 }
500
501 if (mcrd->inmidistate == 0) { // awaiting command
502 if (inbyte == 0xf5) // MTP port #
503 mcrd->inmidistate = 1;
504 else
505 snd_mtpav_inmidi_process(mcrd, inbyte);
506 } else if (mcrd->inmidistate) {
507 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
508 mcrd->inmidistate = 0;
509 }
510 }
511
512 static void snd_mtpav_read_bytes(struct mtpav *mcrd)
513 {
514 u8 clrread, setread;
515 u8 mtp_read_byte;
516 u8 sr, cbyt;
517 int i;
518
519 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
520
521 if (!(sbyt & SIGS_BYTE))
522 return;
523
524 cbyt = snd_mtpav_getreg(mcrd, CREG);
525 clrread = cbyt & (SIGC_READ ^ 0xff);
526 setread = cbyt | SIGC_READ;
527
528 do {
529
530 mtp_read_byte = 0;
531 for (i = 0; i < 4; i++) {
532 snd_mtpav_mputreg(mcrd, CREG, setread);
533 sr = snd_mtpav_getreg(mcrd, SREG);
534 snd_mtpav_mputreg(mcrd, CREG, clrread);
535
536 sr &= SIGS_IN0 | SIGS_IN1;
537 sr >>= 4;
538 mtp_read_byte |= sr << (i * 2);
539 }
540
541 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
542
543 sbyt = snd_mtpav_getreg(mcrd, SREG);
544
545 } while (sbyt & SIGS_BYTE);
546 }
547
548 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
549 {
550 struct mtpav *mcard = dev_id;
551
552 spin_lock(&mcard->spinlock);
553 snd_mtpav_read_bytes(mcard);
554 spin_unlock(&mcard->spinlock);
555 return IRQ_HANDLED;
556 }
557
558 /*
559 * get ISA resources
560 */
561 static int snd_mtpav_get_ISA(struct mtpav *mcard)
562 {
563 mcard->res_port = devm_request_region(mcard->card->dev, port, 3,
564 "MotuMTPAV MIDI");
565 if (!mcard->res_port) {
566 dev_err(mcard->card->dev, "MTVAP port 0x%lx is busy\n", port);
567 return -EBUSY;
568 }
569 mcard->port = port;
570 if (devm_request_irq(mcard->card->dev, irq, snd_mtpav_irqh, 0,
571 "MOTU MTPAV", mcard)) {
572 dev_err(mcard->card->dev, "MTVAP IRQ %d busy\n", irq);
573 return -EBUSY;
574 }
575 mcard->irq = irq;
576 return 0;
577 }
578
579
580 /*
581 */
582
583 static const struct snd_rawmidi_ops snd_mtpav_output = {
584 .open = snd_mtpav_output_open,
585 .close = snd_mtpav_output_close,
586 .trigger = snd_mtpav_output_trigger,
587 };
588
589 static const struct snd_rawmidi_ops snd_mtpav_input = {
590 .open = snd_mtpav_input_open,
591 .close = snd_mtpav_input_close,
592 .trigger = snd_mtpav_input_trigger,
593 };
594
595
596 /*
597 * get RAWMIDI resources
598 */
599
600 static void snd_mtpav_set_name(struct mtpav *chip,
601 struct snd_rawmidi_substream *substream)
602 {
603 if (substream->number >= 0 && substream->number < chip->num_ports)
604 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
605 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
606 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
607 else if (substream->number == chip->num_ports * 2)
608 strcpy(substream->name, "MTP computer");
609 else if (substream->number == chip->num_ports * 2 + 1)
610 strcpy(substream->name, "MTP ADAT");
611 else
612 strcpy(substream->name, "MTP broadcast");
613 }
614
615 static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
616 {
617 int rval;
618 struct snd_rawmidi *rawmidi;
619 struct snd_rawmidi_substream *substream;
620 struct list_head *list;
621
622 if (hwports < 1)
623 hwports = 1;
624 else if (hwports > 8)
625 hwports = 8;
626 mcard->num_ports = hwports;
627
628 rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
629 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
630 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
631 &mcard->rmidi);
632 if (rval < 0)
633 return rval;
634 rawmidi = mcard->rmidi;
635 rawmidi->private_data = mcard;
636
637 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
638 substream = list_entry(list, struct snd_rawmidi_substream, list);
639 snd_mtpav_set_name(mcard, substream);
640 substream->ops = &snd_mtpav_input;
641 }
642 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
643 substream = list_entry(list, struct snd_rawmidi_substream, list);
644 snd_mtpav_set_name(mcard, substream);
645 substream->ops = &snd_mtpav_output;
646 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
647 }
648 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
649 SNDRV_RAWMIDI_INFO_DUPLEX;
650 sprintf(rawmidi->name, "MTP AV MIDI");
651 return 0;
652 }
653
654 /*
655 */
656
657 static void snd_mtpav_free(struct snd_card *card)
658 {
659 struct mtpav *crd = card->private_data;
660 unsigned long flags;
661
662 spin_lock_irqsave(&crd->spinlock, flags);
663 if (crd->istimer > 0)
664 snd_mtpav_remove_output_timer(crd);
665 spin_unlock_irqrestore(&crd->spinlock, flags);
666 }
667
668 /*
669 */
670 static int snd_mtpav_probe(struct platform_device *dev)
671 {
672 struct snd_card *card;
673 int err;
674 struct mtpav *mtp_card;
675
676 err = snd_devm_card_new(&dev->dev, index, id, THIS_MODULE,
677 sizeof(*mtp_card), &card);
678 if (err < 0)
679 return err;
680
681 mtp_card = card->private_data;
682 spin_lock_init(&mtp_card->spinlock);
683 mtp_card->card = card;
684 mtp_card->irq = -1;
685 mtp_card->share_irq = 0;
686 mtp_card->inmidistate = 0;
687 mtp_card->outmidihwport = 0xffffffff;
688 timer_setup(&mtp_card->timer, snd_mtpav_output_timer, 0);
689
690 err = snd_mtpav_get_RAWMIDI(mtp_card);
691 if (err < 0)
692 return err;
693
694 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
695
696 err = snd_mtpav_get_ISA(mtp_card);
697 if (err < 0)
698 return err;
699
700 strcpy(card->driver, "MTPAV");
701 strcpy(card->shortname, "MTPAV on parallel port");
702 snprintf(card->longname, sizeof(card->longname),
703 "MTPAV on parallel port at 0x%lx", port);
704
705 snd_mtpav_portscan(mtp_card);
706
707 err = snd_card_register(mtp_card->card);
708 if (err < 0)
709 return err;
710
711 card->private_free = snd_mtpav_free;
712
713 platform_set_drvdata(dev, card);
714 dev_info(card->dev,
715 "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n",
716 irq, port);
717 return 0;
718 }
719
720 #define SND_MTPAV_DRIVER "snd_mtpav"
721
722 static struct platform_driver snd_mtpav_driver = {
723 .probe = snd_mtpav_probe,
724 .driver = {
725 .name = SND_MTPAV_DRIVER,
726 },
727 };
728
729 static int __init alsa_card_mtpav_init(void)
730 {
731 int err;
732
733 err = platform_driver_register(&snd_mtpav_driver);
734 if (err < 0)
735 return err;
736
737 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
738 if (!IS_ERR(device)) {
739 if (platform_get_drvdata(device))
740 return 0;
741 platform_device_unregister(device);
742 err = -ENODEV;
743 } else
744 err = PTR_ERR(device);
745 platform_driver_unregister(&snd_mtpav_driver);
746 return err;
747 }
748
749 static void __exit alsa_card_mtpav_exit(void)
750 {
751 platform_device_unregister(device);
752 platform_driver_unregister(&snd_mtpav_driver);
753 }
754
755 module_init(alsa_card_mtpav_init)
756 module_exit(alsa_card_mtpav_exit)
Kernel DRM miscellaneous fixes and cross-tree changes