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source: GPL/trunk/alsa-kernel/drivers/mtpav.c@ 426

Last change on this file since 426 was 426, checked in by Paul Smedley, 16 years ago
Update alsa-kernel to ALSA 1.0.20 level
File size: 20.1 KB

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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/err.h>
56	#include <linux/platform_device.h>
57	#include <linux/slab.h>
58	#include <linux/ioport.h>
59	#include <linux/moduleparam.h>
60	#include <sound/core.h>
61	#include <sound/initval.h>
62	#include <sound/rawmidi.h>
63	#include <linux/delay.h>
64
65	#include <asm/io.h>
66
67	/*
68	* globals
69	*/
70	MODULE_AUTHOR("Michael T. Mayers");
71	MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
72	MODULE_LICENSE("GPL");
73	MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
74
75	// io resources
76	#define MTPAV_IOBASE 0x378
77	#define MTPAV_IRQ 7
78	#define MTPAV_MAX_PORTS 8
79
80	static int index = SNDRV_DEFAULT_IDX1;
81	static char *id = SNDRV_DEFAULT_STR1;
82	static long port = MTPAV_IOBASE; /* 0x378, 0x278 */
83	static int irq = MTPAV_IRQ; /* 7, 5 */
84	static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */
85
86	module_param(index, int, 0444);
87	MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
88	module_param(id, charp, 0444);
89	MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
90	module_param(port, long, 0444);
91	MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
92	module_param(irq, int, 0444);
93	MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
94	module_param(hwports, int, 0444);
95	MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
96
97	static struct platform_device *device;
98
99	/*
100	* defines
101	*/
102	//#define USE_FAKE_MTP // don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
103
104	// parallel port usage masks
105	#define SIGS_BYTE 0x08
106	#define SIGS_RFD 0x80
107	#define SIGS_IRQ 0x40
108	#define SIGS_IN0 0x10
109	#define SIGS_IN1 0x20
110
111	#define SIGC_WRITE 0x04
112	#define SIGC_READ 0x08
113	#define SIGC_INTEN 0x10
114
115	#define DREG 0
116	#define SREG 1
117	#define CREG 2
118
119	//
120	#define MTPAV_MODE_INPUT_OPENED 0x01
121	#define MTPAV_MODE_OUTPUT_OPENED 0x02
122	#define MTPAV_MODE_INPUT_TRIGGERED 0x04
123	#define MTPAV_MODE_OUTPUT_TRIGGERED 0x08
124
125	#define NUMPORTS (0x12+1)
126
127
128	/*
129	*/
130
131	struct mtpav_port {
132	u8 number;
133	u8 hwport;
134	u8 mode;
135	u8 running_status;
136	struct snd_rawmidi_substream *input;
137	struct snd_rawmidi_substream *output;
138	};
139
140	struct mtpav {
141	struct snd_card *card;
142	unsigned long port;
143	struct resource *res_port;
144	int irq; /* interrupt (for inputs) */
145	spinlock_t spinlock;
146	int share_irq; /* number of accesses to input interrupts */
147	int istimer; /* number of accesses to timer interrupts */
148	struct timer_list timer; /* timer interrupts for outputs */
149	struct snd_rawmidi *rmidi;
150	int num_ports; /* number of hw ports (1-8) */
151	struct mtpav_port ports[NUMPORTS]; /* all ports including computer, adat and bc */
152
153	u32 inmidiport; /* selected input midi port */
154	u32 inmidistate; /* during midi command 0xf5 */
155
156	u32 outmidihwport; /* selected output midi hw port */
157	};
158
159
160	/*
161	* possible hardware ports (selected by 0xf5 port message)
162	* 0x00 all ports
163	* 0x01 .. 0x08 this MTP's ports 1..8
164	* 0x09 .. 0x10 networked MTP's ports (9..16)
165	* 0x11 networked MTP's computer port
166	* 0x63 to ADAT
167	*
168	* mappig:
169	* subdevice 0 - (X-1) ports
170	* X - (2*X-1) networked ports
171	* X computer
172	* X+1 ADAT
173	* X+2 all ports
174	*
175	* where X = chip->num_ports
176	*/
177
178	#define MTPAV_PIDX_COMPUTER 0
179	#define MTPAV_PIDX_ADAT 1
180	#define MTPAV_PIDX_BROADCAST 2
181
182
183	static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
184	{
185	if (subdev < 0)
186	return 0x01; /* invalid - use port 0 as default */
187	else if (subdev < chip->num_ports)
188	return subdev + 1; /* single mtp port */
189	else if (subdev < chip->num_ports * 2)
190	return subdev - chip->num_ports + 0x09; /* remote port */
191	else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
192	return 0x11; /* computer port */
193	else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
194	return 0x63; /* ADAT */
195	return 0; /* all ports */
196	}
197
198	static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
199	{
200	int p;
201	if (hwport <= 0x00) /* all ports */
202	return chip->num_ports + MTPAV_PIDX_BROADCAST;
203	else if (hwport <= 0x08) { /* single port */
204	p = hwport - 1;
205	if (p >= chip->num_ports)
206	p = 0;
207	return p;
208	} else if (hwport <= 0x10) { /* remote port */
209	p = hwport - 0x09 + chip->num_ports;
210	if (p >= chip->num_ports * 2)
211	p = chip->num_ports;
212	return p;
213	} else if (hwport == 0x11) /* computer port */
214	return chip->num_ports + MTPAV_PIDX_COMPUTER;
215	else /* ADAT */
216	return chip->num_ports + MTPAV_PIDX_ADAT;
217	}
218
219
220	/*
221	*/
222
223	static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
224	{
225	u8 rval = 0;
226
227	if (reg == SREG) {
228	rval = inb(chip->port + SREG);
229	rval = (rval & 0xf8);
230	} else if (reg == CREG) {
231	rval = inb(chip->port + CREG);
232	rval = (rval & 0x1c);
233	}
234
235	return rval;
236	}
237
238	/*
239	*/
240
241	static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
242	{
243	if (reg == DREG \|\| reg == CREG)
244	outb(val, chip->port + reg);
245	}
246
247	/*
248	*/
249
250	static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
251	{
252	int counts = 10000;
253	u8 sbyte;
254
255	sbyte = snd_mtpav_getreg(chip, SREG);
256	while (!(sbyte & SIGS_RFD) && counts--) {
257	sbyte = snd_mtpav_getreg(chip, SREG);
258	udelay(10);
259	}
260	}
261
262	static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
263	{
264	u8 tcbyt;
265	u8 clrwrite;
266	u8 setwrite;
267
268	snd_mtpav_wait_rfdhi(chip);
269
270	/////////////////
271
272	tcbyt = snd_mtpav_getreg(chip, CREG);
273	clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
274	setwrite = tcbyt \| SIGC_WRITE;
275
276	snd_mtpav_mputreg(chip, DREG, byte);
277	snd_mtpav_mputreg(chip, CREG, clrwrite); // clear write bit
278
279	snd_mtpav_mputreg(chip, CREG, setwrite); // set write bit
280
281	}
282
283
284	/*
285	*/
286
287	/* call this with spin lock held */
288	static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
289	struct mtpav_port *portp,
290	struct snd_rawmidi_substream *substream)
291	{
292	u8 outbyte;
293
294	// Get the outbyte first, so we can emulate running status if
295	// necessary
296	if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
297	return;
298
299	// send port change command if necessary
300
301	if (portp->hwport != mtp_card->outmidihwport) {
302	mtp_card->outmidihwport = portp->hwport;
303
304	snd_mtpav_send_byte(mtp_card, 0xf5);
305	snd_mtpav_send_byte(mtp_card, portp->hwport);
306	/*
307	snd_printk(KERN_DEBUG "new outport: 0x%x\n",
308	(unsigned int) portp->hwport);
309	*/
310	if (!(outbyte & 0x80) && portp->running_status)
311	snd_mtpav_send_byte(mtp_card, portp->running_status);
312	}
313
314	// send data
315
316	do {
317	if (outbyte & 0x80)
318	portp->running_status = outbyte;
319
320	snd_mtpav_send_byte(mtp_card, outbyte);
321	} while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
322	}
323
324	static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
325	{
326	struct mtpav *mtp_card = substream->rmidi->private_data;
327	struct mtpav_port *portp = &mtp_card->ports[substream->number];
328	unsigned long flags;
329
330	spin_lock_irqsave(&mtp_card->spinlock, flags);
331	snd_mtpav_output_port_write(mtp_card, portp, substream);
332	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
333	}
334
335
336	/*
337	* mtpav control
338	*/
339
340	static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode
341	{
342	u8 p;
343
344	for (p = 0; p < 8; p++) {
345	snd_mtpav_send_byte(chip, 0xf5);
346	snd_mtpav_send_byte(chip, p);
347	snd_mtpav_send_byte(chip, 0xfe);
348	}
349	}
350
351	/*
352	*/
353
354	static int snd_mtpav_input_open(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 = substream;
363	if (mtp_card->share_irq++ == 0)
364	snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN \| SIGC_WRITE)); // enable pport interrupts
365	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
366	return 0;
367	}
368
369	/*
370	*/
371
372	static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
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	portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
380	portp->input = NULL;
381	if (--mtp_card->share_irq == 0)
382	snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts
383	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
384	return 0;
385	}
386
387	/*
388	*/
389
390	static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
391	{
392	struct mtpav *mtp_card = substream->rmidi->private_data;
393	struct mtpav_port *portp = &mtp_card->ports[substream->number];
394	unsigned long flags;
395
396	spin_lock_irqsave(&mtp_card->spinlock, flags);
397	if (up)
398	portp->mode \|= MTPAV_MODE_INPUT_TRIGGERED;
399	else
400	portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
401	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
402
403	}
404
405
406	/*
407	* timer interrupt for outputs
408	*/
409
410	static void snd_mtpav_output_timer(unsigned long data)
411	{
412	unsigned long flags;
413	struct mtpav chip = (struct mtpav )data;
414	int p;
415
416	spin_lock_irqsave(&chip->spinlock, flags);
417	/* reprogram timer */
418	chip->timer.expires = 1 + jiffies;
419	add_timer(&chip->timer);
420	/* process each port */
421	for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
422	struct mtpav_port *portp = &chip->ports[p];
423	if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
424	snd_mtpav_output_port_write(chip, portp, portp->output);
425	}
426	spin_unlock_irqrestore(&chip->spinlock, flags);
427	}
428
429	/* spinlock held! */
430	static void snd_mtpav_add_output_timer(struct mtpav *chip)
431	{
432	chip->timer.expires = 1 + jiffies;
433	add_timer(&chip->timer);
434	}
435
436	/* spinlock held! */
437	static void snd_mtpav_remove_output_timer(struct mtpav *chip)
438	{
439	del_timer(&chip->timer);
440	}
441
442	/*
443	*/
444
445	static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
446	{
447	struct mtpav *mtp_card = substream->rmidi->private_data;
448	struct mtpav_port *portp = &mtp_card->ports[substream->number];
449	unsigned long flags;
450
451	spin_lock_irqsave(&mtp_card->spinlock, flags);
452	portp->mode \|= MTPAV_MODE_OUTPUT_OPENED;
453	portp->output = substream;
454	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
455	return 0;
456	};
457
458	/*
459	*/
460
461	static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
462	{
463	struct mtpav *mtp_card = substream->rmidi->private_data;
464	struct mtpav_port *portp = &mtp_card->ports[substream->number];
465	unsigned long flags;
466
467	spin_lock_irqsave(&mtp_card->spinlock, flags);
468	portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
469	portp->output = NULL;
470	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
471	return 0;
472	};
473
474	/*
475	*/
476
477	static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
478	{
479	struct mtpav *mtp_card = substream->rmidi->private_data;
480	struct mtpav_port *portp = &mtp_card->ports[substream->number];
481	unsigned long flags;
482
483	spin_lock_irqsave(&mtp_card->spinlock, flags);
484	if (up) {
485	if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
486	if (mtp_card->istimer++ == 0)
487	snd_mtpav_add_output_timer(mtp_card);
488	portp->mode \|= MTPAV_MODE_OUTPUT_TRIGGERED;
489	}
490	} else {
491	portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
492	if (--mtp_card->istimer == 0)
493	snd_mtpav_remove_output_timer(mtp_card);
494	}
495	spin_unlock_irqrestore(&mtp_card->spinlock, flags);
496
497	if (up)
498	snd_mtpav_output_write(substream);
499	}
500
501	/*
502	* midi interrupt for inputs
503	*/
504
505	static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
506	{
507	struct mtpav_port *portp;
508
509	if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
510	return;
511
512	portp = &mcrd->ports[mcrd->inmidiport];
513	if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
514	snd_rawmidi_receive(portp->input, &inbyte, 1);
515	}
516
517	static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
518	{
519	if (inbyte >= 0xf8) {
520	/* real-time midi code */
521	snd_mtpav_inmidi_process(mcrd, inbyte);
522	return;
523	}
524
525	if (mcrd->inmidistate == 0) { // awaiting command
526	if (inbyte == 0xf5) // MTP port #
527	mcrd->inmidistate = 1;
528	else
529	snd_mtpav_inmidi_process(mcrd, inbyte);
530	} else if (mcrd->inmidistate) {
531	mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
532	mcrd->inmidistate = 0;
533	}
534	}
535
536	static void snd_mtpav_read_bytes(struct mtpav *mcrd)
537	{
538	u8 clrread, setread;
539	u8 mtp_read_byte;
540	u8 sr, cbyt;
541	int i;
542
543	u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
544
545	/* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
546
547	if (!(sbyt & SIGS_BYTE))
548	return;
549
550	cbyt = snd_mtpav_getreg(mcrd, CREG);
551	clrread = cbyt & (SIGC_READ ^ 0xff);
552	setread = cbyt \| SIGC_READ;
553
554	do {
555
556	mtp_read_byte = 0;
557	for (i = 0; i < 4; i++) {
558	snd_mtpav_mputreg(mcrd, CREG, setread);
559	sr = snd_mtpav_getreg(mcrd, SREG);
560	snd_mtpav_mputreg(mcrd, CREG, clrread);
561
562	sr &= SIGS_IN0 \| SIGS_IN1;
563	sr >>= 4;
564	mtp_read_byte \|= sr << (i * 2);
565	}
566
567	snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
568
569	sbyt = snd_mtpav_getreg(mcrd, SREG);
570
571	} while (sbyt & SIGS_BYTE);
572	}
573
574	static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
575	{
576	struct mtpav *mcard = dev_id;
577
578	spin_lock(&mcard->spinlock);
579	snd_mtpav_read_bytes(mcard);
580	spin_unlock(&mcard->spinlock);
581	return IRQ_HANDLED;
582	}
583
584	/*
585	* get ISA resources
586	*/
587	static int __devinit snd_mtpav_get_ISA(struct mtpav * mcard)
588	{
589	if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
590	snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
591	return -EBUSY;
592	}
593	mcard->port = port;
594	if (request_irq(irq, snd_mtpav_irqh, IRQF_DISABLED, "MOTU MTPAV", mcard)) {
595	snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
596	return -EBUSY;
597	}
598	mcard->irq = irq;
599	return 0;
600	}
601
602
603	/*
604	*/
605
606	static struct snd_rawmidi_ops snd_mtpav_output = {
607	.open = snd_mtpav_output_open,
608	.close = snd_mtpav_output_close,
609	.trigger = snd_mtpav_output_trigger,
610	};
611
612	static struct snd_rawmidi_ops snd_mtpav_input = {
613	.open = snd_mtpav_input_open,
614	.close = snd_mtpav_input_close,
615	.trigger = snd_mtpav_input_trigger,
616	};
617
618
619	/*
620	* get RAWMIDI resources
621	*/
622
623	static void __devinit snd_mtpav_set_name(struct mtpav *chip,
624	struct snd_rawmidi_substream *substream)
625	{
626	if (substream->number >= 0 && substream->number < chip->num_ports)
627	sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
628	else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
629	sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
630	else if (substream->number == chip->num_ports * 2)
631	strcpy(substream->name, "MTP computer");
632	else if (substream->number == chip->num_ports * 2 + 1)
633	strcpy(substream->name, "MTP ADAT");
634	else
635	strcpy(substream->name, "MTP broadcast");
636	}
637
638	static int __devinit snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
639	{
640	int rval;
641	struct snd_rawmidi *rawmidi;
642	struct snd_rawmidi_substream *substream;
643	struct list_head *list;
644
645	if (hwports < 1)
646	hwports = 1;
647	else if (hwports > 8)
648	hwports = 8;
649	mcard->num_ports = hwports;
650
651	if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
652	mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
653	mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
654	&mcard->rmidi)) < 0)
655	return rval;
656	rawmidi = mcard->rmidi;
657	rawmidi->private_data = mcard;
658
659	list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
660	substream = list_entry(list, struct snd_rawmidi_substream, list);
661	snd_mtpav_set_name(mcard, substream);
662	substream->ops = &snd_mtpav_input;
663	}
664	list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
665	substream = list_entry(list, struct snd_rawmidi_substream, list);
666	snd_mtpav_set_name(mcard, substream);
667	substream->ops = &snd_mtpav_output;
668	mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
669	}
670	rawmidi->info_flags \|= SNDRV_RAWMIDI_INFO_OUTPUT \| SNDRV_RAWMIDI_INFO_INPUT \|
671	SNDRV_RAWMIDI_INFO_DUPLEX;
672	sprintf(rawmidi->name, "MTP AV MIDI");
673	return 0;
674	}
675
676	/*
677	*/
678
679	static void snd_mtpav_free(struct snd_card *card)
680	{
681	struct mtpav *crd = card->private_data;
682	unsigned long flags;
683
684	spin_lock_irqsave(&crd->spinlock, flags);
685	if (crd->istimer > 0)
686	snd_mtpav_remove_output_timer(crd);
687	spin_unlock_irqrestore(&crd->spinlock, flags);
688	if (crd->irq >= 0)
689	free_irq(crd->irq, (void *)crd);
690	release_and_free_resource(crd->res_port);
691	}
692
693	/*
694	*/
695	static int __devinit snd_mtpav_probe(struct platform_device *dev)
696	{
697	struct snd_card *card;
698	int err;
699	struct mtpav *mtp_card;
700
701	err = snd_card_create(index, id, THIS_MODULE, sizeof(*mtp_card), &card);
702	if (err < 0)
703	return err;
704
705	mtp_card = card->private_data;
706	spin_lock_init(&mtp_card->spinlock);
707	init_timer(&mtp_card->timer);
708	mtp_card->card = card;
709	mtp_card->irq = -1;
710	mtp_card->share_irq = 0;
711	mtp_card->inmidistate = 0;
712	mtp_card->outmidihwport = 0xffffffff;
713	init_timer(&mtp_card->timer);
714	mtp_card->timer.function = snd_mtpav_output_timer;
715	mtp_card->timer.data = (unsigned long) mtp_card;
716
717	card->private_free = snd_mtpav_free;
718
719	err = snd_mtpav_get_RAWMIDI(mtp_card);
720	if (err < 0)
721	goto __error;
722
723	mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
724
725	err = snd_mtpav_get_ISA(mtp_card);
726	if (err < 0)
727	goto __error;
728
729	strcpy(card->driver, "MTPAV");
730	strcpy(card->shortname, "MTPAV on parallel port");
731	snprintf(card->longname, sizeof(card->longname),
732	"MTPAV on parallel port at 0x%lx", port);
733
734	snd_mtpav_portscan(mtp_card);
735
736	snd_card_set_dev(card, &dev->dev);
737	err = snd_card_register(mtp_card->card);
738	if (err < 0)
739	goto __error;
740
741	platform_set_drvdata(dev, card);
742	printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
743	return 0;
744
745	__error:
746	snd_card_free(card);
747	return err;
748	}
749
750	static int __devexit snd_mtpav_remove(struct platform_device *devptr)
751	{
752	snd_card_free(platform_get_drvdata(devptr));
753	platform_set_drvdata(devptr, NULL);
754	return 0;
755	}
756
757	#define SND_MTPAV_DRIVER "snd_mtpav"
758
759	static struct platform_driver snd_mtpav_driver = {
760	.probe = snd_mtpav_probe,
761	.remove = __devexit_p(snd_mtpav_remove),
762	.driver = {
763	.name = SND_MTPAV_DRIVER
764	},
765	};
766
767	static int __init alsa_card_mtpav_init(void)
768	{
769	int err;
770
771	if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
772	return err;
773
774	device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
775	if (!IS_ERR(device)) {
776	if (platform_get_drvdata(device))
777	return 0;
778	platform_device_unregister(device);
779	err = -ENODEV;
780	} else
781	err = PTR_ERR(device);
782	platform_driver_unregister(&snd_mtpav_driver);
783	return err;
784	}
785
786	static void __exit alsa_card_mtpav_exit(void)
787	{
788	platform_device_unregister(device);
789	platform_driver_unregister(&snd_mtpav_driver);
790	}
791
792	module_init(alsa_card_mtpav_init)
793	module_exit(alsa_card_mtpav_exit)

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