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source: GPL/trunk/alsa-kernel/drivers/mtpav.c@ 617

Last change on this file since 617 was 598, checked in by David Azarewicz, 9 years ago
Merged/reintegrated v2 branch into trunk. Trunk is now v2
File size: 20.0 KB

Line
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)

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