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writeback: split writeback_inodes_wb
[linux-2.6/next.git] / sound / drivers / mtpav.c
blobda03597fc893d0393869415f607f6ddbcaad31cb
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/err.h>
56 #include <linux/platform_device.h>
57 #include <linux/ioport.h>
58 #include <linux/moduleparam.h>
59 #include <sound/core.h>
60 #include <sound/initval.h>
61 #include <sound/rawmidi.h>
62 #include <linux/delay.h>
63
64 #include <asm/io.h>
65
66 /*
67 * globals
68 */
69 MODULE_AUTHOR("Michael T. Mayers");
70 MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
71 MODULE_LICENSE("GPL");
72 MODULE_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
79 static int index = SNDRV_DEFAULT_IDX1;
80 static char *id = SNDRV_DEFAULT_STR1;
81 static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
82 static int irq = MTPAV_IRQ; /* 7, 5 */
83 static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
84
85 module_param(index, int, 0444);
86 MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
87 module_param(id, charp, 0444);
88 MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
89 module_param(port, long, 0444);
90 MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
91 module_param(irq, int, 0444);
92 MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
93 module_param(hwports, int, 0444);
94 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
95
96 static 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
130 struct 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
139 struct 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
182 static 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
197 static 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
222 static 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
240 static 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
249 static 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
261 static 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 */
287 static 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
323 static 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
339 static 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
353 static 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
371 static 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
389 static 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
409 static 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 chip->timer.expires = 1 + jiffies;
418 add_timer(&chip->timer);
419 /* process each port */
420 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
421 struct mtpav_port *portp = &chip->ports[p];
422 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
423 snd_mtpav_output_port_write(chip, portp, portp->output);
424 }
425 spin_unlock_irqrestore(&chip->spinlock, flags);
426 }
427
428 /* spinlock held! */
429 static void snd_mtpav_add_output_timer(struct mtpav *chip)
430 {
431 chip->timer.expires = 1 + jiffies;
432 add_timer(&chip->timer);
433 }
434
435 /* spinlock held! */
436 static void snd_mtpav_remove_output_timer(struct mtpav *chip)
437 {
438 del_timer(&chip->timer);
439 }
440
441 /*
442 */
443
444 static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
445 {
446 struct mtpav *mtp_card = substream->rmidi->private_data;
447 struct mtpav_port *portp = &mtp_card->ports[substream->number];
448 unsigned long flags;
449
450 spin_lock_irqsave(&mtp_card->spinlock, flags);
451 portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
452 portp->output = substream;
453 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
454 return 0;
455 };
456
457 /*
458 */
459
460 static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
461 {
462 struct mtpav *mtp_card = substream->rmidi->private_data;
463 struct mtpav_port *portp = &mtp_card->ports[substream->number];
464 unsigned long flags;
465
466 spin_lock_irqsave(&mtp_card->spinlock, flags);
467 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
468 portp->output = NULL;
469 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
470 return 0;
471 };
472
473 /*
474 */
475
476 static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
477 {
478 struct mtpav *mtp_card = substream->rmidi->private_data;
479 struct mtpav_port *portp = &mtp_card->ports[substream->number];
480 unsigned long flags;
481
482 spin_lock_irqsave(&mtp_card->spinlock, flags);
483 if (up) {
484 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
485 if (mtp_card->istimer++ == 0)
486 snd_mtpav_add_output_timer(mtp_card);
487 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
488 }
489 } else {
490 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
491 if (--mtp_card->istimer == 0)
492 snd_mtpav_remove_output_timer(mtp_card);
493 }
494 spin_unlock_irqrestore(&mtp_card->spinlock, flags);
495
496 if (up)
497 snd_mtpav_output_write(substream);
498 }
499
500 /*
501 * midi interrupt for inputs
502 */
503
504 static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
505 {
506 struct mtpav_port *portp;
507
508 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
509 return;
510
511 portp = &mcrd->ports[mcrd->inmidiport];
512 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
513 snd_rawmidi_receive(portp->input, &inbyte, 1);
514 }
515
516 static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
517 {
518 if (inbyte >= 0xf8) {
519 /* real-time midi code */
520 snd_mtpav_inmidi_process(mcrd, inbyte);
521 return;
522 }
523
524 if (mcrd->inmidistate == 0) { // awaiting command
525 if (inbyte == 0xf5) // MTP port #
526 mcrd->inmidistate = 1;
527 else
528 snd_mtpav_inmidi_process(mcrd, inbyte);
529 } else if (mcrd->inmidistate) {
530 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
531 mcrd->inmidistate = 0;
532 }
533 }
534
535 static void snd_mtpav_read_bytes(struct mtpav *mcrd)
536 {
537 u8 clrread, setread;
538 u8 mtp_read_byte;
539 u8 sr, cbyt;
540 int i;
541
542 u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
543
544 /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
545
546 if (!(sbyt & SIGS_BYTE))
547 return;
548
549 cbyt = snd_mtpav_getreg(mcrd, CREG);
550 clrread = cbyt & (SIGC_READ ^ 0xff);
551 setread = cbyt | SIGC_READ;
552
553 do {
554
555 mtp_read_byte = 0;
556 for (i = 0; i < 4; i++) {
557 snd_mtpav_mputreg(mcrd, CREG, setread);
558 sr = snd_mtpav_getreg(mcrd, SREG);
559 snd_mtpav_mputreg(mcrd, CREG, clrread);
560
561 sr &= SIGS_IN0 | SIGS_IN1;
562 sr >>= 4;
563 mtp_read_byte |= sr << (i * 2);
564 }
565
566 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
567
568 sbyt = snd_mtpav_getreg(mcrd, SREG);
569
570 } while (sbyt & SIGS_BYTE);
571 }
572
573 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
574 {
575 struct mtpav *mcard = dev_id;
576
577 spin_lock(&mcard->spinlock);
578 snd_mtpav_read_bytes(mcard);
579 spin_unlock(&mcard->spinlock);
580 return IRQ_HANDLED;
581 }
582
583 /*
584 * get ISA resources
585 */
586 static int __devinit snd_mtpav_get_ISA(struct mtpav * mcard)
587 {
588 if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
589 snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
590 return -EBUSY;
591 }
592 mcard->port = port;
593 if (request_irq(irq, snd_mtpav_irqh, IRQF_DISABLED, "MOTU MTPAV", mcard)) {
594 snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
595 return -EBUSY;
596 }
597 mcard->irq = irq;
598 return 0;
599 }
600
601
602 /*
603 */
604
605 static struct snd_rawmidi_ops snd_mtpav_output = {
606 .open = snd_mtpav_output_open,
607 .close = snd_mtpav_output_close,
608 .trigger = snd_mtpav_output_trigger,
609 };
610
611 static struct snd_rawmidi_ops snd_mtpav_input = {
612 .open = snd_mtpav_input_open,
613 .close = snd_mtpav_input_close,
614 .trigger = snd_mtpav_input_trigger,
615 };
616
617
618 /*
619 * get RAWMIDI resources
620 */
621
622 static void __devinit snd_mtpav_set_name(struct mtpav *chip,
623 struct snd_rawmidi_substream *substream)
624 {
625 if (substream->number >= 0 && substream->number < chip->num_ports)
626 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
627 else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
628 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
629 else if (substream->number == chip->num_ports * 2)
630 strcpy(substream->name, "MTP computer");
631 else if (substream->number == chip->num_ports * 2 + 1)
632 strcpy(substream->name, "MTP ADAT");
633 else
634 strcpy(substream->name, "MTP broadcast");
635 }
636
637 static int __devinit snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
638 {
639 int rval;
640 struct snd_rawmidi *rawmidi;
641 struct snd_rawmidi_substream *substream;
642 struct list_head *list;
643
644 if (hwports < 1)
645 hwports = 1;
646 else if (hwports > 8)
647 hwports = 8;
648 mcard->num_ports = hwports;
649
650 if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
651 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
652 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
653 &mcard->rmidi)) < 0)
654 return rval;
655 rawmidi = mcard->rmidi;
656 rawmidi->private_data = mcard;
657
658 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
659 substream = list_entry(list, struct snd_rawmidi_substream, list);
660 snd_mtpav_set_name(mcard, substream);
661 substream->ops = &snd_mtpav_input;
662 }
663 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
664 substream = list_entry(list, struct snd_rawmidi_substream, list);
665 snd_mtpav_set_name(mcard, substream);
666 substream->ops = &snd_mtpav_output;
667 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
668 }
669 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
670 SNDRV_RAWMIDI_INFO_DUPLEX;
671 sprintf(rawmidi->name, "MTP AV MIDI");
672 return 0;
673 }
674
675 /*
676 */
677
678 static void snd_mtpav_free(struct snd_card *card)
679 {
680 struct mtpav *crd = card->private_data;
681 unsigned long flags;
682
683 spin_lock_irqsave(&crd->spinlock, flags);
684 if (crd->istimer > 0)
685 snd_mtpav_remove_output_timer(crd);
686 spin_unlock_irqrestore(&crd->spinlock, flags);
687 if (crd->irq >= 0)
688 free_irq(crd->irq, (void *)crd);
689 release_and_free_resource(crd->res_port);
690 }
691
692 /*
693 */
694 static int __devinit snd_mtpav_probe(struct platform_device *dev)
695 {
696 struct snd_card *card;
697 int err;
698 struct mtpav *mtp_card;
699
700 err = snd_card_create(index, id, THIS_MODULE, sizeof(*mtp_card), &card);
701 if (err < 0)
702 return err;
703
704 mtp_card = card->private_data;
705 spin_lock_init(&mtp_card->spinlock);
706 init_timer(&mtp_card->timer);
707 mtp_card->card = card;
708 mtp_card->irq = -1;
709 mtp_card->share_irq = 0;
710 mtp_card->inmidistate = 0;
711 mtp_card->outmidihwport = 0xffffffff;
712 init_timer(&mtp_card->timer);
713 mtp_card->timer.function = snd_mtpav_output_timer;
714 mtp_card->timer.data = (unsigned long) mtp_card;
715
716 card->private_free = snd_mtpav_free;
717
718 err = snd_mtpav_get_RAWMIDI(mtp_card);
719 if (err < 0)
720 goto __error;
721
722 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
723
724 err = snd_mtpav_get_ISA(mtp_card);
725 if (err < 0)
726 goto __error;
727
728 strcpy(card->driver, "MTPAV");
729 strcpy(card->shortname, "MTPAV on parallel port");
730 snprintf(card->longname, sizeof(card->longname),
731 "MTPAV on parallel port at 0x%lx", port);
732
733 snd_mtpav_portscan(mtp_card);
734
735 snd_card_set_dev(card, &dev->dev);
736 err = snd_card_register(mtp_card->card);
737 if (err < 0)
738 goto __error;
739
740 platform_set_drvdata(dev, card);
741 printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
742 return 0;
743
744 __error:
745 snd_card_free(card);
746 return err;
747 }
748
749 static int __devexit snd_mtpav_remove(struct platform_device *devptr)
750 {
751 snd_card_free(platform_get_drvdata(devptr));
752 platform_set_drvdata(devptr, NULL);
753 return 0;
754 }
755
756 #define SND_MTPAV_DRIVER "snd_mtpav"
757
758 static struct platform_driver snd_mtpav_driver = {
759 .probe = snd_mtpav_probe,
760 .remove = __devexit_p(snd_mtpav_remove),
761 .driver = {
762 .name = SND_MTPAV_DRIVER
763 },
764 };
765
766 static int __init alsa_card_mtpav_init(void)
767 {
768 int err;
769
770 if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
771 return err;
772
773 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
774 if (!IS_ERR(device)) {
775 if (platform_get_drvdata(device))
776 return 0;
777 platform_device_unregister(device);
778 err = -ENODEV;
779 } else
780 err = PTR_ERR(device);
781 platform_driver_unregister(&snd_mtpav_driver);
782 return err;
783 }
784
785 static void __exit alsa_card_mtpav_exit(void)
786 {
787 platform_device_unregister(device);
788 platform_driver_unregister(&snd_mtpav_driver);
789 }
790
791 module_init(alsa_card_mtpav_init)
792 module_exit(alsa_card_mtpav_exit)
linux-next