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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / sound / usb / usbmidi.c
blob6676a177c99e3342117051a179c4588bdbdd0335
1 /*
2 * usbmidi.c - ALSA USB MIDI driver
3 *
4 * Copyright (c) 2002-2007 Clemens Ladisch
5 * All rights reserved.
6 *
7 * Based on the OSS usb-midi driver by NAGANO Daisuke,
8 * NetBSD's umidi driver by Takuya SHIOZAKI,
9 * the "USB Device Class Definition for MIDI Devices" by Roland
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed and/or modified under the
21 * terms of the GNU General Public License as published by the Free Software
22 * Foundation; either version 2 of the License, or (at your option) any later
23 * version.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38 #include <linux/kernel.h>
39 #include <linux/types.h>
40 #include <linux/bitops.h>
41 #include <linux/interrupt.h>
42 #include <linux/spinlock.h>
43 #include <linux/string.h>
44 #include <linux/init.h>
45 #include <linux/slab.h>
46 #include <linux/timer.h>
47 #include <linux/usb.h>
48 #include <sound/core.h>
49 #include <sound/rawmidi.h>
50 #include <sound/asequencer.h>
51 #include "usbaudio.h"
52
53
54 /*
55 * define this to log all USB packets
56 */
57 /* #define DUMP_PACKETS */
58
59 /*
60 * how long to wait after some USB errors, so that khubd can disconnect() us
61 * without too many spurious errors
62 */
63 #define ERROR_DELAY_JIFFIES (HZ / 10)
64
65
66 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
67 MODULE_DESCRIPTION("USB Audio/MIDI helper module");
68 MODULE_LICENSE("Dual BSD/GPL");
69
70
71 struct usb_ms_header_descriptor {
72 __u8 bLength;
73 __u8 bDescriptorType;
74 __u8 bDescriptorSubtype;
75 __u8 bcdMSC[2];
76 __le16 wTotalLength;
77 } __attribute__ ((packed));
78
79 struct usb_ms_endpoint_descriptor {
80 __u8 bLength;
81 __u8 bDescriptorType;
82 __u8 bDescriptorSubtype;
83 __u8 bNumEmbMIDIJack;
84 __u8 baAssocJackID[0];
85 } __attribute__ ((packed));
86
87 struct snd_usb_midi_in_endpoint;
88 struct snd_usb_midi_out_endpoint;
89 struct snd_usb_midi_endpoint;
90
91 struct usb_protocol_ops {
92 void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int);
93 void (*output)(struct snd_usb_midi_out_endpoint*);
94 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
95 void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*);
96 void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*);
97 };
98
99 struct snd_usb_midi {
100 struct snd_usb_audio *chip;
101 struct usb_interface *iface;
102 const struct snd_usb_audio_quirk *quirk;
103 struct snd_rawmidi *rmidi;
104 struct usb_protocol_ops* usb_protocol_ops;
105 struct list_head list;
106 struct timer_list error_timer;
107 spinlock_t disc_lock;
108
109 struct snd_usb_midi_endpoint {
110 struct snd_usb_midi_out_endpoint *out;
111 struct snd_usb_midi_in_endpoint *in;
112 } endpoints[MIDI_MAX_ENDPOINTS];
113 unsigned long input_triggered;
114 unsigned char disconnected;
115 };
116
117 struct snd_usb_midi_out_endpoint {
118 struct snd_usb_midi* umidi;
119 struct urb* urb;
120 int urb_active;
121 int max_transfer; /* size of urb buffer */
122 struct tasklet_struct tasklet;
123
124 spinlock_t buffer_lock;
125
126 struct usbmidi_out_port {
127 struct snd_usb_midi_out_endpoint* ep;
128 struct snd_rawmidi_substream *substream;
129 int active;
130 uint8_t cable; /* cable number << 4 */
131 uint8_t state;
132 #define STATE_UNKNOWN 0
133 #define STATE_1PARAM 1
134 #define STATE_2PARAM_1 2
135 #define STATE_2PARAM_2 3
136 #define STATE_SYSEX_0 4
137 #define STATE_SYSEX_1 5
138 #define STATE_SYSEX_2 6
139 uint8_t data[2];
140 } ports[0x10];
141 int current_port;
142 };
143
144 struct snd_usb_midi_in_endpoint {
145 struct snd_usb_midi* umidi;
146 struct urb* urb;
147 struct usbmidi_in_port {
148 struct snd_rawmidi_substream *substream;
149 u8 running_status_length;
150 } ports[0x10];
151 u8 seen_f5;
152 u8 error_resubmit;
153 int current_port;
154 };
155
156 static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep);
157
158 static const uint8_t snd_usbmidi_cin_length[] = {
159 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
160 };
161
162 /*
163 * Submits the URB, with error handling.
164 */
165 static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags)
166 {
167 int err = usb_submit_urb(urb, flags);
168 if (err < 0 && err != -ENODEV)
169 snd_printk(KERN_ERR "usb_submit_urb: %d\n", err);
170 return err;
171 }
172
173 /*
174 * Error handling for URB completion functions.
175 */
176 static int snd_usbmidi_urb_error(int status)
177 {
178 switch (status) {
179 /* manually unlinked, or device gone */
180 case -ENOENT:
181 case -ECONNRESET:
182 case -ESHUTDOWN:
183 case -ENODEV:
184 return -ENODEV;
185 /* errors that might occur during unplugging */
186 case -EPROTO:
187 case -ETIME:
188 case -EILSEQ:
189 return -EIO;
190 default:
191 snd_printk(KERN_ERR "urb status %d\n", status);
192 return 0; /* continue */
193 }
194 }
195
196 /*
197 * Receives a chunk of MIDI data.
198 */
199 static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx,
200 uint8_t* data, int length)
201 {
202 struct usbmidi_in_port* port = &ep->ports[portidx];
203
204 if (!port->substream) {
205 snd_printd("unexpected port %d!\n", portidx);
206 return;
207 }
208 if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
209 return;
210 snd_rawmidi_receive(port->substream, data, length);
211 }
212
213 #ifdef DUMP_PACKETS
214 static void dump_urb(const char *type, const u8 *data, int length)
215 {
216 snd_printk(KERN_DEBUG "%s packet: [", type);
217 for (; length > 0; ++data, --length)
218 printk(" %02x", *data);
219 printk(" ]\n");
220 }
221 #else
222 #define dump_urb(type, data, length) /* nothing */
223 #endif
224
225 /*
226 * Processes the data read from the device.
227 */
228 static void snd_usbmidi_in_urb_complete(struct urb* urb)
229 {
230 struct snd_usb_midi_in_endpoint* ep = urb->context;
231
232 if (urb->status == 0) {
233 dump_urb("received", urb->transfer_buffer, urb->actual_length);
234 ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
235 urb->actual_length);
236 } else {
237 int err = snd_usbmidi_urb_error(urb->status);
238 if (err < 0) {
239 if (err != -ENODEV) {
240 ep->error_resubmit = 1;
241 mod_timer(&ep->umidi->error_timer,
242 jiffies + ERROR_DELAY_JIFFIES);
243 }
244 return;
245 }
246 }
247
248 urb->dev = ep->umidi->chip->dev;
249 snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
250 }
251
252 static void snd_usbmidi_out_urb_complete(struct urb* urb)
253 {
254 struct snd_usb_midi_out_endpoint* ep = urb->context;
255
256 spin_lock(&ep->buffer_lock);
257 ep->urb_active = 0;
258 spin_unlock(&ep->buffer_lock);
259 if (urb->status < 0) {
260 int err = snd_usbmidi_urb_error(urb->status);
261 if (err < 0) {
262 if (err != -ENODEV)
263 mod_timer(&ep->umidi->error_timer,
264 jiffies + ERROR_DELAY_JIFFIES);
265 return;
266 }
267 }
268 snd_usbmidi_do_output(ep);
269 }
270
271 /*
272 * This is called when some data should be transferred to the device
273 * (from one or more substreams).
274 */
275 static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep)
276 {
277 struct urb* urb = ep->urb;
278 unsigned long flags;
279
280 spin_lock_irqsave(&ep->buffer_lock, flags);
281 if (ep->urb_active || ep->umidi->chip->shutdown) {
282 spin_unlock_irqrestore(&ep->buffer_lock, flags);
283 return;
284 }
285
286 urb->transfer_buffer_length = 0;
287 ep->umidi->usb_protocol_ops->output(ep);
288
289 if (urb->transfer_buffer_length > 0) {
290 dump_urb("sending", urb->transfer_buffer,
291 urb->transfer_buffer_length);
292 urb->dev = ep->umidi->chip->dev;
293 ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0;
294 }
295 spin_unlock_irqrestore(&ep->buffer_lock, flags);
296 }
297
298 static void snd_usbmidi_out_tasklet(unsigned long data)
299 {
300 struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data;
301
302 snd_usbmidi_do_output(ep);
303 }
304
305 /* called after transfers had been interrupted due to some USB error */
306 static void snd_usbmidi_error_timer(unsigned long data)
307 {
308 struct snd_usb_midi *umidi = (struct snd_usb_midi *)data;
309 int i;
310
311 spin_lock(&umidi->disc_lock);
312 if (umidi->disconnected) {
313 spin_unlock(&umidi->disc_lock);
314 return;
315 }
316 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
317 struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
318 if (in && in->error_resubmit) {
319 in->error_resubmit = 0;
320 in->urb->dev = umidi->chip->dev;
321 snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC);
322 }
323 if (umidi->endpoints[i].out)
324 snd_usbmidi_do_output(umidi->endpoints[i].out);
325 }
326 spin_unlock(&umidi->disc_lock);
327 }
328
329 /* helper function to send static data that may not DMA-able */
330 static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep,
331 const void *data, int len)
332 {
333 int err;
334 void *buf = kmemdup(data, len, GFP_KERNEL);
335 if (!buf)
336 return -ENOMEM;
337 dump_urb("sending", buf, len);
338 err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len,
339 NULL, 250);
340 kfree(buf);
341 return err;
342 }
343
344 /*
345 * Standard USB MIDI protocol: see the spec.
346 * Midiman protocol: like the standard protocol, but the control byte is the
347 * fourth byte in each packet, and uses length instead of CIN.
348 */
349
350 static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep,
351 uint8_t* buffer, int buffer_length)
352 {
353 int i;
354
355 for (i = 0; i + 3 < buffer_length; i += 4)
356 if (buffer[i] != 0) {
357 int cable = buffer[i] >> 4;
358 int length = snd_usbmidi_cin_length[buffer[i] & 0x0f];
359 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
360 }
361 }
362
363 static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep,
364 uint8_t* buffer, int buffer_length)
365 {
366 int i;
367
368 for (i = 0; i + 3 < buffer_length; i += 4)
369 if (buffer[i + 3] != 0) {
370 int port = buffer[i + 3] >> 4;
371 int length = buffer[i + 3] & 3;
372 snd_usbmidi_input_data(ep, port, &buffer[i], length);
373 }
374 }
375
376 /*
377 * Buggy M-Audio device: running status on input results in a packet that has
378 * the data bytes but not the status byte and that is marked with CIN 4.
379 */
380 static void snd_usbmidi_maudio_broken_running_status_input(
381 struct snd_usb_midi_in_endpoint* ep,
382 uint8_t* buffer, int buffer_length)
383 {
384 int i;
385
386 for (i = 0; i + 3 < buffer_length; i += 4)
387 if (buffer[i] != 0) {
388 int cable = buffer[i] >> 4;
389 u8 cin = buffer[i] & 0x0f;
390 struct usbmidi_in_port *port = &ep->ports[cable];
391 int length;
392
393 length = snd_usbmidi_cin_length[cin];
394 if (cin == 0xf && buffer[i + 1] >= 0xf8)
395 ; /* realtime msg: no running status change */
396 else if (cin >= 0x8 && cin <= 0xe)
397 /* channel msg */
398 port->running_status_length = length - 1;
399 else if (cin == 0x4 &&
400 port->running_status_length != 0 &&
401 buffer[i + 1] < 0x80)
402 /* CIN 4 that is not a SysEx */
403 length = port->running_status_length;
404 else
405 /*
406 * All other msgs cannot begin running status.
407 * (A channel msg sent as two or three CIN 0xF
408 * packets could in theory, but this device
409 * doesn't use this format.)
410 */
411 port->running_status_length = 0;
412 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
413 }
414 }
415
416 /*
417 * CME protocol: like the standard protocol, but SysEx commands are sent as a
418 * single USB packet preceded by a 0x0F byte.
419 */
420 static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
421 uint8_t *buffer, int buffer_length)
422 {
423 if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
424 snd_usbmidi_standard_input(ep, buffer, buffer_length);
425 else
426 snd_usbmidi_input_data(ep, buffer[0] >> 4,
427 &buffer[1], buffer_length - 1);
428 }
429
430 /*
431 * Adds one USB MIDI packet to the output buffer.
432 */
433 static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0,
434 uint8_t p1, uint8_t p2, uint8_t p3)
435 {
436
437 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
438 buf[0] = p0;
439 buf[1] = p1;
440 buf[2] = p2;
441 buf[3] = p3;
442 urb->transfer_buffer_length += 4;
443 }
444
445 /*
446 * Adds one Midiman packet to the output buffer.
447 */
448 static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0,
449 uint8_t p1, uint8_t p2, uint8_t p3)
450 {
451
452 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
453 buf[0] = p1;
454 buf[1] = p2;
455 buf[2] = p3;
456 buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f];
457 urb->transfer_buffer_length += 4;
458 }
459
460 /*
461 * Converts MIDI commands to USB MIDI packets.
462 */
463 static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port,
464 uint8_t b, struct urb* urb)
465 {
466 uint8_t p0 = port->cable;
467 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) =
468 port->ep->umidi->usb_protocol_ops->output_packet;
469
470 if (b >= 0xf8) {
471 output_packet(urb, p0 | 0x0f, b, 0, 0);
472 } else if (b >= 0xf0) {
473 switch (b) {
474 case 0xf0:
475 port->data[0] = b;
476 port->state = STATE_SYSEX_1;
477 break;
478 case 0xf1:
479 case 0xf3:
480 port->data[0] = b;
481 port->state = STATE_1PARAM;
482 break;
483 case 0xf2:
484 port->data[0] = b;
485 port->state = STATE_2PARAM_1;
486 break;
487 case 0xf4:
488 case 0xf5:
489 port->state = STATE_UNKNOWN;
490 break;
491 case 0xf6:
492 output_packet(urb, p0 | 0x05, 0xf6, 0, 0);
493 port->state = STATE_UNKNOWN;
494 break;
495 case 0xf7:
496 switch (port->state) {
497 case STATE_SYSEX_0:
498 output_packet(urb, p0 | 0x05, 0xf7, 0, 0);
499 break;
500 case STATE_SYSEX_1:
501 output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0);
502 break;
503 case STATE_SYSEX_2:
504 output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7);
505 break;
506 }
507 port->state = STATE_UNKNOWN;
508 break;
509 }
510 } else if (b >= 0x80) {
511 port->data[0] = b;
512 if (b >= 0xc0 && b <= 0xdf)
513 port->state = STATE_1PARAM;
514 else
515 port->state = STATE_2PARAM_1;
516 } else { /* b < 0x80 */
517 switch (port->state) {
518 case STATE_1PARAM:
519 if (port->data[0] < 0xf0) {
520 p0 |= port->data[0] >> 4;
521 } else {
522 p0 |= 0x02;
523 port->state = STATE_UNKNOWN;
524 }
525 output_packet(urb, p0, port->data[0], b, 0);
526 break;
527 case STATE_2PARAM_1:
528 port->data[1] = b;
529 port->state = STATE_2PARAM_2;
530 break;
531 case STATE_2PARAM_2:
532 if (port->data[0] < 0xf0) {
533 p0 |= port->data[0] >> 4;
534 port->state = STATE_2PARAM_1;
535 } else {
536 p0 |= 0x03;
537 port->state = STATE_UNKNOWN;
538 }
539 output_packet(urb, p0, port->data[0], port->data[1], b);
540 break;
541 case STATE_SYSEX_0:
542 port->data[0] = b;
543 port->state = STATE_SYSEX_1;
544 break;
545 case STATE_SYSEX_1:
546 port->data[1] = b;
547 port->state = STATE_SYSEX_2;
548 break;
549 case STATE_SYSEX_2:
550 output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b);
551 port->state = STATE_SYSEX_0;
552 break;
553 }
554 }
555 }
556
557 static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep)
558 {
559 struct urb* urb = ep->urb;
560 int p;
561
562 /* FIXME: lower-numbered ports can starve higher-numbered ports */
563 for (p = 0; p < 0x10; ++p) {
564 struct usbmidi_out_port* port = &ep->ports[p];
565 if (!port->active)
566 continue;
567 while (urb->transfer_buffer_length + 3 < ep->max_transfer) {
568 uint8_t b;
569 if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) {
570 port->active = 0;
571 break;
572 }
573 snd_usbmidi_transmit_byte(port, b, urb);
574 }
575 }
576 }
577
578 static struct usb_protocol_ops snd_usbmidi_standard_ops = {
579 .input = snd_usbmidi_standard_input,
580 .output = snd_usbmidi_standard_output,
581 .output_packet = snd_usbmidi_output_standard_packet,
582 };
583
584 static struct usb_protocol_ops snd_usbmidi_midiman_ops = {
585 .input = snd_usbmidi_midiman_input,
586 .output = snd_usbmidi_standard_output,
587 .output_packet = snd_usbmidi_output_midiman_packet,
588 };
589
590 static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = {
591 .input = snd_usbmidi_maudio_broken_running_status_input,
592 .output = snd_usbmidi_standard_output,
593 .output_packet = snd_usbmidi_output_standard_packet,
594 };
595
596 static struct usb_protocol_ops snd_usbmidi_cme_ops = {
597 .input = snd_usbmidi_cme_input,
598 .output = snd_usbmidi_standard_output,
599 .output_packet = snd_usbmidi_output_standard_packet,
600 };
601
602 /*
603 * Novation USB MIDI protocol: number of data bytes is in the first byte
604 * (when receiving) (+1!) or in the second byte (when sending); data begins
605 * at the third byte.
606 */
607
608 static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep,
609 uint8_t* buffer, int buffer_length)
610 {
611 if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
612 return;
613 snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
614 }
615
616 static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep)
617 {
618 uint8_t* transfer_buffer;
619 int count;
620
621 if (!ep->ports[0].active)
622 return;
623 transfer_buffer = ep->urb->transfer_buffer;
624 count = snd_rawmidi_transmit(ep->ports[0].substream,
625 &transfer_buffer[2],
626 ep->max_transfer - 2);
627 if (count < 1) {
628 ep->ports[0].active = 0;
629 return;
630 }
631 transfer_buffer[0] = 0;
632 transfer_buffer[1] = count;
633 ep->urb->transfer_buffer_length = 2 + count;
634 }
635
636 static struct usb_protocol_ops snd_usbmidi_novation_ops = {
637 .input = snd_usbmidi_novation_input,
638 .output = snd_usbmidi_novation_output,
639 };
640
641 /*
642 * "raw" protocol: used by the MOTU FastLane.
643 */
644
645 static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
646 uint8_t* buffer, int buffer_length)
647 {
648 snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
649 }
650
651 static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep)
652 {
653 int count;
654
655 if (!ep->ports[0].active)
656 return;
657 count = snd_rawmidi_transmit(ep->ports[0].substream,
658 ep->urb->transfer_buffer,
659 ep->max_transfer);
660 if (count < 1) {
661 ep->ports[0].active = 0;
662 return;
663 }
664 ep->urb->transfer_buffer_length = count;
665 }
666
667 static struct usb_protocol_ops snd_usbmidi_raw_ops = {
668 .input = snd_usbmidi_raw_input,
669 .output = snd_usbmidi_raw_output,
670 };
671
672 /*
673 * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
674 */
675
676 static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep)
677 {
678 static const u8 init_data[] = {
679 /* initialization magic: "get version" */
680 0xf0,
681 0x00, 0x20, 0x31, /* Emagic */
682 0x64, /* Unitor8 */
683 0x0b, /* version number request */
684 0x00, /* command version */
685 0x00, /* EEPROM, box 0 */
686 0xf7
687 };
688 send_bulk_static_data(ep, init_data, sizeof(init_data));
689 /* while we're at it, pour on more magic */
690 send_bulk_static_data(ep, init_data, sizeof(init_data));
691 }
692
693 static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep)
694 {
695 static const u8 finish_data[] = {
696 /* switch to patch mode with last preset */
697 0xf0,
698 0x00, 0x20, 0x31, /* Emagic */
699 0x64, /* Unitor8 */
700 0x10, /* patch switch command */
701 0x00, /* command version */
702 0x7f, /* to all boxes */
703 0x40, /* last preset in EEPROM */
704 0xf7
705 };
706 send_bulk_static_data(ep, finish_data, sizeof(finish_data));
707 }
708
709 static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep,
710 uint8_t* buffer, int buffer_length)
711 {
712 int i;
713
714 /* FF indicates end of valid data */
715 for (i = 0; i < buffer_length; ++i)
716 if (buffer[i] == 0xff) {
717 buffer_length = i;
718 break;
719 }
720
721 /* handle F5 at end of last buffer */
722 if (ep->seen_f5)
723 goto switch_port;
724
725 while (buffer_length > 0) {
726 /* determine size of data until next F5 */
727 for (i = 0; i < buffer_length; ++i)
728 if (buffer[i] == 0xf5)
729 break;
730 snd_usbmidi_input_data(ep, ep->current_port, buffer, i);
731 buffer += i;
732 buffer_length -= i;
733
734 if (buffer_length <= 0)
735 break;
736 /* assert(buffer[0] == 0xf5); */
737 ep->seen_f5 = 1;
738 ++buffer;
739 --buffer_length;
740
741 switch_port:
742 if (buffer_length <= 0)
743 break;
744 if (buffer[0] < 0x80) {
745 ep->current_port = (buffer[0] - 1) & 15;
746 ++buffer;
747 --buffer_length;
748 }
749 ep->seen_f5 = 0;
750 }
751 }
752
753 static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep)
754 {
755 int port0 = ep->current_port;
756 uint8_t* buf = ep->urb->transfer_buffer;
757 int buf_free = ep->max_transfer;
758 int length, i;
759
760 for (i = 0; i < 0x10; ++i) {
761 /* round-robin, starting at the last current port */
762 int portnum = (port0 + i) & 15;
763 struct usbmidi_out_port* port = &ep->ports[portnum];
764
765 if (!port->active)
766 continue;
767 if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) {
768 port->active = 0;
769 continue;
770 }
771
772 if (portnum != ep->current_port) {
773 if (buf_free < 2)
774 break;
775 ep->current_port = portnum;
776 buf[0] = 0xf5;
777 buf[1] = (portnum + 1) & 15;
778 buf += 2;
779 buf_free -= 2;
780 }
781
782 if (buf_free < 1)
783 break;
784 length = snd_rawmidi_transmit(port->substream, buf, buf_free);
785 if (length > 0) {
786 buf += length;
787 buf_free -= length;
788 if (buf_free < 1)
789 break;
790 }
791 }
792 if (buf_free < ep->max_transfer && buf_free > 0) {
793 *buf = 0xff;
794 --buf_free;
795 }
796 ep->urb->transfer_buffer_length = ep->max_transfer - buf_free;
797 }
798
799 static struct usb_protocol_ops snd_usbmidi_emagic_ops = {
800 .input = snd_usbmidi_emagic_input,
801 .output = snd_usbmidi_emagic_output,
802 .init_out_endpoint = snd_usbmidi_emagic_init_out,
803 .finish_out_endpoint = snd_usbmidi_emagic_finish_out,
804 };
805
806
807 static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
808 {
809 struct snd_usb_midi* umidi = substream->rmidi->private_data;
810 struct usbmidi_out_port* port = NULL;
811 int i, j;
812
813 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
814 if (umidi->endpoints[i].out)
815 for (j = 0; j < 0x10; ++j)
816 if (umidi->endpoints[i].out->ports[j].substream == substream) {
817 port = &umidi->endpoints[i].out->ports[j];
818 break;
819 }
820 if (!port) {
821 snd_BUG();
822 return -ENXIO;
823 }
824 substream->runtime->private_data = port;
825 port->state = STATE_UNKNOWN;
826 return 0;
827 }
828
829 static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
830 {
831 return 0;
832 }
833
834 static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)
835 {
836 struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data;
837
838 port->active = up;
839 if (up) {
840 if (port->ep->umidi->chip->shutdown) {
841 /* gobble up remaining bytes to prevent wait in
842 * snd_rawmidi_drain_output */
843 while (!snd_rawmidi_transmit_empty(substream))
844 snd_rawmidi_transmit_ack(substream, 1);
845 return;
846 }
847 tasklet_hi_schedule(&port->ep->tasklet);
848 }
849 }
850
851 static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
852 {
853 return 0;
854 }
855
856 static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream)
857 {
858 return 0;
859 }
860
861 static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
862 {
863 struct snd_usb_midi* umidi = substream->rmidi->private_data;
864
865 if (up)
866 set_bit(substream->number, &umidi->input_triggered);
867 else
868 clear_bit(substream->number, &umidi->input_triggered);
869 }
870
871 static struct snd_rawmidi_ops snd_usbmidi_output_ops = {
872 .open = snd_usbmidi_output_open,
873 .close = snd_usbmidi_output_close,
874 .trigger = snd_usbmidi_output_trigger,
875 };
876
877 static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
878 .open = snd_usbmidi_input_open,
879 .close = snd_usbmidi_input_close,
880 .trigger = snd_usbmidi_input_trigger
881 };
882
883 /*
884 * Frees an input endpoint.
885 * May be called when ep hasn't been initialized completely.
886 */
887 static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep)
888 {
889 if (ep->urb) {
890 usb_buffer_free(ep->umidi->chip->dev,
891 ep->urb->transfer_buffer_length,
892 ep->urb->transfer_buffer,
893 ep->urb->transfer_dma);
894 usb_free_urb(ep->urb);
895 }
896 kfree(ep);
897 }
898
899 /*
900 * Creates an input endpoint.
901 */
902 static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
903 struct snd_usb_midi_endpoint_info* ep_info,
904 struct snd_usb_midi_endpoint* rep)
905 {
906 struct snd_usb_midi_in_endpoint* ep;
907 void* buffer;
908 unsigned int pipe;
909 int length;
910
911 rep->in = NULL;
912 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
913 if (!ep)
914 return -ENOMEM;
915 ep->umidi = umidi;
916
917 ep->urb = usb_alloc_urb(0, GFP_KERNEL);
918 if (!ep->urb) {
919 snd_usbmidi_in_endpoint_delete(ep);
920 return -ENOMEM;
921 }
922 if (ep_info->in_interval)
923 pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep);
924 else
925 pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep);
926 length = usb_maxpacket(umidi->chip->dev, pipe, 0);
927 buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL,
928 &ep->urb->transfer_dma);
929 if (!buffer) {
930 snd_usbmidi_in_endpoint_delete(ep);
931 return -ENOMEM;
932 }
933 if (ep_info->in_interval)
934 usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
935 length, snd_usbmidi_in_urb_complete, ep,
936 ep_info->in_interval);
937 else
938 usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer,
939 length, snd_usbmidi_in_urb_complete, ep);
940 ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
941
942 rep->in = ep;
943 return 0;
944 }
945
946 static unsigned int snd_usbmidi_count_bits(unsigned int x)
947 {
948 unsigned int bits;
949
950 for (bits = 0; x; ++bits)
951 x &= x - 1;
952 return bits;
953 }
954
955 /*
956 * Frees an output endpoint.
957 * May be called when ep hasn't been initialized completely.
958 */
959 static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint* ep)
960 {
961 if (ep->urb) {
962 usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer,
963 ep->urb->transfer_buffer,
964 ep->urb->transfer_dma);
965 usb_free_urb(ep->urb);
966 }
967 kfree(ep);
968 }
969
970 /*
971 * Creates an output endpoint, and initializes output ports.
972 */
973 static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
974 struct snd_usb_midi_endpoint_info* ep_info,
975 struct snd_usb_midi_endpoint* rep)
976 {
977 struct snd_usb_midi_out_endpoint* ep;
978 int i;
979 unsigned int pipe;
980 void* buffer;
981
982 rep->out = NULL;
983 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
984 if (!ep)
985 return -ENOMEM;
986 ep->umidi = umidi;
987
988 ep->urb = usb_alloc_urb(0, GFP_KERNEL);
989 if (!ep->urb) {
990 snd_usbmidi_out_endpoint_delete(ep);
991 return -ENOMEM;
992 }
993 if (ep_info->out_interval)
994 pipe = usb_sndintpipe(umidi->chip->dev, ep_info->out_ep);
995 else
996 pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep);
997 if (umidi->chip->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */
998 /* FIXME: we need more URBs to get reasonable bandwidth here: */
999 ep->max_transfer = 4;
1000 else
1001 ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1);
1002 buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer,
1003 GFP_KERNEL, &ep->urb->transfer_dma);
1004 if (!buffer) {
1005 snd_usbmidi_out_endpoint_delete(ep);
1006 return -ENOMEM;
1007 }
1008 if (ep_info->out_interval)
1009 usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
1010 ep->max_transfer, snd_usbmidi_out_urb_complete,
1011 ep, ep_info->out_interval);
1012 else
1013 usb_fill_bulk_urb(ep->urb, umidi->chip->dev,
1014 pipe, buffer, ep->max_transfer,
1015 snd_usbmidi_out_urb_complete, ep);
1016 ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1017
1018 spin_lock_init(&ep->buffer_lock);
1019 tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
1020
1021 for (i = 0; i < 0x10; ++i)
1022 if (ep_info->out_cables & (1 << i)) {
1023 ep->ports[i].ep = ep;
1024 ep->ports[i].cable = i << 4;
1025 }
1026
1027 if (umidi->usb_protocol_ops->init_out_endpoint)
1028 umidi->usb_protocol_ops->init_out_endpoint(ep);
1029
1030 rep->out = ep;
1031 return 0;
1032 }
1033
1034 /*
1035 * Frees everything.
1036 */
1037 static void snd_usbmidi_free(struct snd_usb_midi* umidi)
1038 {
1039 int i;
1040
1041 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1042 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1043 if (ep->out)
1044 snd_usbmidi_out_endpoint_delete(ep->out);
1045 if (ep->in)
1046 snd_usbmidi_in_endpoint_delete(ep->in);
1047 }
1048 kfree(umidi);
1049 }
1050
1051 /*
1052 * Unlinks all URBs (must be done before the usb_device is deleted).
1053 */
1054 void snd_usbmidi_disconnect(struct list_head* p)
1055 {
1056 struct snd_usb_midi* umidi;
1057 int i;
1058
1059 umidi = list_entry(p, struct snd_usb_midi, list);
1060 /*
1061 * an URB's completion handler may start the timer and
1062 * a timer may submit an URB. To reliably break the cycle
1063 * a flag under lock must be used
1064 */
1065 spin_lock_irq(&umidi->disc_lock);
1066 umidi->disconnected = 1;
1067 spin_unlock_irq(&umidi->disc_lock);
1068 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1069 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1070 if (ep->out)
1071 tasklet_kill(&ep->out->tasklet);
1072 if (ep->out && ep->out->urb) {
1073 usb_kill_urb(ep->out->urb);
1074 if (umidi->usb_protocol_ops->finish_out_endpoint)
1075 umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
1076 }
1077 if (ep->in)
1078 usb_kill_urb(ep->in->urb);
1079 }
1080 del_timer_sync(&umidi->error_timer);
1081 }
1082
1083 static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi)
1084 {
1085 struct snd_usb_midi* umidi = rmidi->private_data;
1086 snd_usbmidi_free(umidi);
1087 }
1088
1089 static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi,
1090 int stream, int number)
1091 {
1092 struct list_head* list;
1093
1094 list_for_each(list, &umidi->rmidi->streams[stream].substreams) {
1095 struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list);
1096 if (substream->number == number)
1097 return substream;
1098 }
1099 return NULL;
1100 }
1101
1102 /*
1103 * This list specifies names for ports that do not fit into the standard
1104 * "(product) MIDI (n)" schema because they aren't external MIDI ports,
1105 * such as internal control or synthesizer ports.
1106 */
1107 static struct port_info {
1108 u32 id;
1109 short int port;
1110 short int voices;
1111 const char *name;
1112 unsigned int seq_flags;
1113 } snd_usbmidi_port_info[] = {
1114 #define PORT_INFO(vendor, product, num, name_, voices_, flags) \
1115 { .id = USB_ID(vendor, product), \
1116 .port = num, .voices = voices_, \
1117 .name = name_, .seq_flags = flags }
1118 #define EXTERNAL_PORT(vendor, product, num, name) \
1119 PORT_INFO(vendor, product, num, name, 0, \
1120 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1121 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1122 SNDRV_SEQ_PORT_TYPE_PORT)
1123 #define CONTROL_PORT(vendor, product, num, name) \
1124 PORT_INFO(vendor, product, num, name, 0, \
1125 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1126 SNDRV_SEQ_PORT_TYPE_HARDWARE)
1127 #define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \
1128 PORT_INFO(vendor, product, num, name, voices, \
1129 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1130 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1131 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1132 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1133 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1134 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1135 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1136 #define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \
1137 PORT_INFO(vendor, product, num, name, voices, \
1138 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1139 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1140 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1141 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1142 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1143 SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \
1144 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1145 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1146 /* Roland UA-100 */
1147 CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"),
1148 /* Roland SC-8850 */
1149 SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128),
1150 SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128),
1151 SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128),
1152 SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128),
1153 EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"),
1154 EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"),
1155 /* Roland U-8 */
1156 EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"),
1157 CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"),
1158 /* Roland SC-8820 */
1159 SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64),
1160 SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64),
1161 EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"),
1162 /* Roland SK-500 */
1163 SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64),
1164 SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64),
1165 EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"),
1166 /* Roland SC-D70 */
1167 SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64),
1168 SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64),
1169 EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"),
1170 /* Edirol UM-880 */
1171 CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"),
1172 /* Edirol SD-90 */
1173 ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128),
1174 ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128),
1175 EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"),
1176 EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"),
1177 /* Edirol UM-550 */
1178 CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"),
1179 /* Edirol SD-20 */
1180 ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64),
1181 ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64),
1182 EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"),
1183 /* Edirol SD-80 */
1184 ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128),
1185 ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128),
1186 EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"),
1187 EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"),
1188 /* Edirol UA-700 */
1189 EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"),
1190 CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"),
1191 /* Roland VariOS */
1192 EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"),
1193 EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"),
1194 EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"),
1195 /* Edirol PCR */
1196 EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"),
1197 EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"),
1198 EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"),
1199 /* BOSS GS-10 */
1200 EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"),
1201 CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"),
1202 /* Edirol UA-1000 */
1203 EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"),
1204 CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"),
1205 /* Edirol UR-80 */
1206 EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"),
1207 EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"),
1208 EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"),
1209 /* Edirol PCR-A */
1210 EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"),
1211 EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"),
1212 EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"),
1213 /* Edirol UM-3EX */
1214 CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"),
1215 /* M-Audio MidiSport 8x8 */
1216 CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"),
1217 CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"),
1218 /* MOTU Fastlane */
1219 EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"),
1220 EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"),
1221 /* Emagic Unitor8/AMT8/MT4 */
1222 EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
1223 EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
1224 EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
1225 };
1226
1227 static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number)
1228 {
1229 int i;
1230
1231 for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) {
1232 if (snd_usbmidi_port_info[i].id == umidi->chip->usb_id &&
1233 snd_usbmidi_port_info[i].port == number)
1234 return &snd_usbmidi_port_info[i];
1235 }
1236 return NULL;
1237 }
1238
1239 static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number,
1240 struct snd_seq_port_info *seq_port_info)
1241 {
1242 struct snd_usb_midi *umidi = rmidi->private_data;
1243 struct port_info *port_info;
1244
1245 /* TODO: read port flags from descriptors */
1246 port_info = find_port_info(umidi, number);
1247 if (port_info) {
1248 seq_port_info->type = port_info->seq_flags;
1249 seq_port_info->midi_voices = port_info->voices;
1250 }
1251 }
1252
1253 static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi,
1254 int stream, int number,
1255 struct snd_rawmidi_substream ** rsubstream)
1256 {
1257 struct port_info *port_info;
1258 const char *name_format;
1259
1260 struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number);
1261 if (!substream) {
1262 snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number);
1263 return;
1264 }
1265
1266 /* TODO: read port name from jack descriptor */
1267 port_info = find_port_info(umidi, number);
1268 name_format = port_info ? port_info->name : "%s MIDI %d";
1269 snprintf(substream->name, sizeof(substream->name),
1270 name_format, umidi->chip->card->shortname, number + 1);
1271
1272 *rsubstream = substream;
1273 }
1274
1275 /*
1276 * Creates the endpoints and their ports.
1277 */
1278 static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi,
1279 struct snd_usb_midi_endpoint_info* endpoints)
1280 {
1281 int i, j, err;
1282 int out_ports = 0, in_ports = 0;
1283
1284 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1285 if (endpoints[i].out_cables) {
1286 err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i],
1287 &umidi->endpoints[i]);
1288 if (err < 0)
1289 return err;
1290 }
1291 if (endpoints[i].in_cables) {
1292 err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i],
1293 &umidi->endpoints[i]);
1294 if (err < 0)
1295 return err;
1296 }
1297
1298 for (j = 0; j < 0x10; ++j) {
1299 if (endpoints[i].out_cables & (1 << j)) {
1300 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports,
1301 &umidi->endpoints[i].out->ports[j].substream);
1302 ++out_ports;
1303 }
1304 if (endpoints[i].in_cables & (1 << j)) {
1305 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports,
1306 &umidi->endpoints[i].in->ports[j].substream);
1307 ++in_ports;
1308 }
1309 }
1310 }
1311 snd_printdd(KERN_INFO "created %d output and %d input ports\n",
1312 out_ports, in_ports);
1313 return 0;
1314 }
1315
1316 /*
1317 * Returns MIDIStreaming device capabilities.
1318 */
1319 static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
1320 struct snd_usb_midi_endpoint_info* endpoints)
1321 {
1322 struct usb_interface* intf;
1323 struct usb_host_interface *hostif;
1324 struct usb_interface_descriptor* intfd;
1325 struct usb_ms_header_descriptor* ms_header;
1326 struct usb_host_endpoint *hostep;
1327 struct usb_endpoint_descriptor* ep;
1328 struct usb_ms_endpoint_descriptor* ms_ep;
1329 int i, epidx;
1330
1331 intf = umidi->iface;
1332 if (!intf)
1333 return -ENXIO;
1334 hostif = &intf->altsetting[0];
1335 intfd = get_iface_desc(hostif);
1336 ms_header = (struct usb_ms_header_descriptor*)hostif->extra;
1337 if (hostif->extralen >= 7 &&
1338 ms_header->bLength >= 7 &&
1339 ms_header->bDescriptorType == USB_DT_CS_INTERFACE &&
1340 ms_header->bDescriptorSubtype == HEADER)
1341 snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n",
1342 ms_header->bcdMSC[1], ms_header->bcdMSC[0]);
1343 else
1344 snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n");
1345
1346 epidx = 0;
1347 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1348 hostep = &hostif->endpoint[i];
1349 ep = get_ep_desc(hostep);
1350 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
1351 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1352 continue;
1353 ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
1354 if (hostep->extralen < 4 ||
1355 ms_ep->bLength < 4 ||
1356 ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
1357 ms_ep->bDescriptorSubtype != MS_GENERAL)
1358 continue;
1359 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1360 if (endpoints[epidx].out_ep) {
1361 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1362 snd_printk(KERN_WARNING "too many endpoints\n");
1363 break;
1364 }
1365 }
1366 endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1367 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1368 endpoints[epidx].out_interval = ep->bInterval;
1369 else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW)
1370 /*
1371 * Low speed bulk transfers don't exist, so
1372 * force interrupt transfers for devices like
1373 * ESI MIDI Mate that try to use them anyway.
1374 */
1375 endpoints[epidx].out_interval = 1;
1376 endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1377 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1378 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1379 } else {
1380 if (endpoints[epidx].in_ep) {
1381 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1382 snd_printk(KERN_WARNING "too many endpoints\n");
1383 break;
1384 }
1385 }
1386 endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1387 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1388 endpoints[epidx].in_interval = ep->bInterval;
1389 else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW)
1390 endpoints[epidx].in_interval = 1;
1391 endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1392 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1393 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1394 }
1395 }
1396 return 0;
1397 }
1398
1399 /*
1400 * On Roland devices, use the second alternate setting to be able to use
1401 * the interrupt input endpoint.
1402 */
1403 static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi)
1404 {
1405 struct usb_interface* intf;
1406 struct usb_host_interface *hostif;
1407 struct usb_interface_descriptor* intfd;
1408
1409 intf = umidi->iface;
1410 if (!intf || intf->num_altsetting != 2)
1411 return;
1412
1413 hostif = &intf->altsetting[1];
1414 intfd = get_iface_desc(hostif);
1415 if (intfd->bNumEndpoints != 2 ||
1416 (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ||
1417 (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1418 return;
1419
1420 snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n",
1421 intfd->bAlternateSetting);
1422 usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber,
1423 intfd->bAlternateSetting);
1424 }
1425
1426 /*
1427 * Try to find any usable endpoints in the interface.
1428 */
1429 static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi,
1430 struct snd_usb_midi_endpoint_info* endpoint,
1431 int max_endpoints)
1432 {
1433 struct usb_interface* intf;
1434 struct usb_host_interface *hostif;
1435 struct usb_interface_descriptor* intfd;
1436 struct usb_endpoint_descriptor* epd;
1437 int i, out_eps = 0, in_eps = 0;
1438
1439 if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582)
1440 snd_usbmidi_switch_roland_altsetting(umidi);
1441
1442 if (endpoint[0].out_ep || endpoint[0].in_ep)
1443 return 0;
1444
1445 intf = umidi->iface;
1446 if (!intf || intf->num_altsetting < 1)
1447 return -ENOENT;
1448 hostif = intf->cur_altsetting;
1449 intfd = get_iface_desc(hostif);
1450
1451 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1452 epd = get_endpoint(hostif, i);
1453 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
1454 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1455 continue;
1456 if (out_eps < max_endpoints &&
1457 (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1458 endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1459 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1460 endpoint[out_eps].out_interval = epd->bInterval;
1461 ++out_eps;
1462 }
1463 if (in_eps < max_endpoints &&
1464 (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
1465 endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1466 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1467 endpoint[in_eps].in_interval = epd->bInterval;
1468 ++in_eps;
1469 }
1470 }
1471 return (out_eps || in_eps) ? 0 : -ENOENT;
1472 }
1473
1474 /*
1475 * Detects the endpoints for one-port-per-endpoint protocols.
1476 */
1477 static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi,
1478 struct snd_usb_midi_endpoint_info* endpoints)
1479 {
1480 int err, i;
1481
1482 err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS);
1483 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1484 if (endpoints[i].out_ep)
1485 endpoints[i].out_cables = 0x0001;
1486 if (endpoints[i].in_ep)
1487 endpoints[i].in_cables = 0x0001;
1488 }
1489 return err;
1490 }
1491
1492 /*
1493 * Detects the endpoints and ports of Yamaha devices.
1494 */
1495 static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi,
1496 struct snd_usb_midi_endpoint_info* endpoint)
1497 {
1498 struct usb_interface* intf;
1499 struct usb_host_interface *hostif;
1500 struct usb_interface_descriptor* intfd;
1501 uint8_t* cs_desc;
1502
1503 intf = umidi->iface;
1504 if (!intf)
1505 return -ENOENT;
1506 hostif = intf->altsetting;
1507 intfd = get_iface_desc(hostif);
1508 if (intfd->bNumEndpoints < 1)
1509 return -ENOENT;
1510
1511 /*
1512 * For each port there is one MIDI_IN/OUT_JACK descriptor, not
1513 * necessarily with any useful contents. So simply count 'em.
1514 */
1515 for (cs_desc = hostif->extra;
1516 cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
1517 cs_desc += cs_desc[0]) {
1518 if (cs_desc[1] == USB_DT_CS_INTERFACE) {
1519 if (cs_desc[2] == MIDI_IN_JACK)
1520 endpoint->in_cables = (endpoint->in_cables << 1) | 1;
1521 else if (cs_desc[2] == MIDI_OUT_JACK)
1522 endpoint->out_cables = (endpoint->out_cables << 1) | 1;
1523 }
1524 }
1525 if (!endpoint->in_cables && !endpoint->out_cables)
1526 return -ENOENT;
1527
1528 return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
1529 }
1530
1531 /*
1532 * Creates the endpoints and their ports for Midiman devices.
1533 */
1534 static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi,
1535 struct snd_usb_midi_endpoint_info* endpoint)
1536 {
1537 struct snd_usb_midi_endpoint_info ep_info;
1538 struct usb_interface* intf;
1539 struct usb_host_interface *hostif;
1540 struct usb_interface_descriptor* intfd;
1541 struct usb_endpoint_descriptor* epd;
1542 int cable, err;
1543
1544 intf = umidi->iface;
1545 if (!intf)
1546 return -ENOENT;
1547 hostif = intf->altsetting;
1548 intfd = get_iface_desc(hostif);
1549 /*
1550 * The various MidiSport devices have more or less random endpoint
1551 * numbers, so we have to identify the endpoints by their index in
1552 * the descriptor array, like the driver for that other OS does.
1553 *
1554 * There is one interrupt input endpoint for all input ports, one
1555 * bulk output endpoint for even-numbered ports, and one for odd-
1556 * numbered ports. Both bulk output endpoints have corresponding
1557 * input bulk endpoints (at indices 1 and 3) which aren't used.
1558 */
1559 if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) {
1560 snd_printdd(KERN_ERR "not enough endpoints\n");
1561 return -ENOENT;
1562 }
1563
1564 epd = get_endpoint(hostif, 0);
1565 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1566 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) {
1567 snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n");
1568 return -ENXIO;
1569 }
1570 epd = get_endpoint(hostif, 2);
1571 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
1572 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
1573 snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n");
1574 return -ENXIO;
1575 }
1576 if (endpoint->out_cables > 0x0001) {
1577 epd = get_endpoint(hostif, 4);
1578 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
1579 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
1580 snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n");
1581 return -ENXIO;
1582 }
1583 }
1584
1585 ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1586 ep_info.out_cables = endpoint->out_cables & 0x5555;
1587 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
1588 if (err < 0)
1589 return err;
1590
1591 ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1592 ep_info.in_interval = get_endpoint(hostif, 0)->bInterval;
1593 ep_info.in_cables = endpoint->in_cables;
1594 err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
1595 if (err < 0)
1596 return err;
1597
1598 if (endpoint->out_cables > 0x0001) {
1599 ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1600 ep_info.out_cables = endpoint->out_cables & 0xaaaa;
1601 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]);
1602 if (err < 0)
1603 return err;
1604 }
1605
1606 for (cable = 0; cable < 0x10; ++cable) {
1607 if (endpoint->out_cables & (1 << cable))
1608 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable,
1609 &umidi->endpoints[cable & 1].out->ports[cable].substream);
1610 if (endpoint->in_cables & (1 << cable))
1611 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable,
1612 &umidi->endpoints[0].in->ports[cable].substream);
1613 }
1614 return 0;
1615 }
1616
1617 static struct snd_rawmidi_global_ops snd_usbmidi_ops = {
1618 .get_port_info = snd_usbmidi_get_port_info,
1619 };
1620
1621 static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi,
1622 int out_ports, int in_ports)
1623 {
1624 struct snd_rawmidi *rmidi;
1625 int err;
1626
1627 err = snd_rawmidi_new(umidi->chip->card, "USB MIDI",
1628 umidi->chip->next_midi_device++,
1629 out_ports, in_ports, &rmidi);
1630 if (err < 0)
1631 return err;
1632 strcpy(rmidi->name, umidi->chip->card->shortname);
1633 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
1634 SNDRV_RAWMIDI_INFO_INPUT |
1635 SNDRV_RAWMIDI_INFO_DUPLEX;
1636 rmidi->ops = &snd_usbmidi_ops;
1637 rmidi->private_data = umidi;
1638 rmidi->private_free = snd_usbmidi_rawmidi_free;
1639 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops);
1640 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops);
1641
1642 umidi->rmidi = rmidi;
1643 return 0;
1644 }
1645
1646 /*
1647 * Temporarily stop input.
1648 */
1649 void snd_usbmidi_input_stop(struct list_head* p)
1650 {
1651 struct snd_usb_midi* umidi;
1652 int i;
1653
1654 umidi = list_entry(p, struct snd_usb_midi, list);
1655 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1656 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1657 if (ep->in)
1658 usb_kill_urb(ep->in->urb);
1659 }
1660 }
1661
1662 static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep)
1663 {
1664 if (ep) {
1665 struct urb* urb = ep->urb;
1666 urb->dev = ep->umidi->chip->dev;
1667 snd_usbmidi_submit_urb(urb, GFP_KERNEL);
1668 }
1669 }
1670
1671 /*
1672 * Resume input after a call to snd_usbmidi_input_stop().
1673 */
1674 void snd_usbmidi_input_start(struct list_head* p)
1675 {
1676 struct snd_usb_midi* umidi;
1677 int i;
1678
1679 umidi = list_entry(p, struct snd_usb_midi, list);
1680 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1681 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
1682 }
1683
1684 /*
1685 * Creates and registers everything needed for a MIDI streaming interface.
1686 */
1687 int snd_usb_create_midi_interface(struct snd_usb_audio* chip,
1688 struct usb_interface* iface,
1689 const struct snd_usb_audio_quirk* quirk)
1690 {
1691 struct snd_usb_midi* umidi;
1692 struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS];
1693 int out_ports, in_ports;
1694 int i, err;
1695
1696 umidi = kzalloc(sizeof(*umidi), GFP_KERNEL);
1697 if (!umidi)
1698 return -ENOMEM;
1699 umidi->chip = chip;
1700 umidi->iface = iface;
1701 umidi->quirk = quirk;
1702 umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
1703 init_timer(&umidi->error_timer);
1704 spin_lock_init(&umidi->disc_lock);
1705 umidi->error_timer.function = snd_usbmidi_error_timer;
1706 umidi->error_timer.data = (unsigned long)umidi;
1707
1708 /* detect the endpoint(s) to use */
1709 memset(endpoints, 0, sizeof(endpoints));
1710 switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) {
1711 case QUIRK_MIDI_STANDARD_INTERFACE:
1712 err = snd_usbmidi_get_ms_info(umidi, endpoints);
1713 if (chip->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */
1714 umidi->usb_protocol_ops =
1715 &snd_usbmidi_maudio_broken_running_status_ops;
1716 break;
1717 case QUIRK_MIDI_FIXED_ENDPOINT:
1718 memcpy(&endpoints[0], quirk->data,
1719 sizeof(struct snd_usb_midi_endpoint_info));
1720 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
1721 break;
1722 case QUIRK_MIDI_YAMAHA:
1723 err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]);
1724 break;
1725 case QUIRK_MIDI_MIDIMAN:
1726 umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
1727 memcpy(&endpoints[0], quirk->data,
1728 sizeof(struct snd_usb_midi_endpoint_info));
1729 err = 0;
1730 break;
1731 case QUIRK_MIDI_NOVATION:
1732 umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
1733 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1734 break;
1735 case QUIRK_MIDI_RAW:
1736 umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
1737 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1738 break;
1739 case QUIRK_MIDI_EMAGIC:
1740 umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops;
1741 memcpy(&endpoints[0], quirk->data,
1742 sizeof(struct snd_usb_midi_endpoint_info));
1743 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
1744 break;
1745 case QUIRK_MIDI_CME:
1746 umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
1747 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1748 break;
1749 default:
1750 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
1751 err = -ENXIO;
1752 break;
1753 }
1754 if (err < 0) {
1755 kfree(umidi);
1756 return err;
1757 }
1758
1759 /* create rawmidi device */
1760 out_ports = 0;
1761 in_ports = 0;
1762 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1763 out_ports += snd_usbmidi_count_bits(endpoints[i].out_cables);
1764 in_ports += snd_usbmidi_count_bits(endpoints[i].in_cables);
1765 }
1766 err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports);
1767 if (err < 0) {
1768 kfree(umidi);
1769 return err;
1770 }
1771
1772 /* create endpoint/port structures */
1773 if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN)
1774 err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]);
1775 else
1776 err = snd_usbmidi_create_endpoints(umidi, endpoints);
1777 if (err < 0) {
1778 snd_usbmidi_free(umidi);
1779 return err;
1780 }
1781
1782 list_add(&umidi->list, &umidi->chip->midi_list);
1783
1784 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1785 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
1786 return 0;
1787 }
1788
1789 EXPORT_SYMBOL(snd_usb_create_midi_interface);
1790 EXPORT_SYMBOL(snd_usbmidi_input_stop);
1791 EXPORT_SYMBOL(snd_usbmidi_input_start);
1792 EXPORT_SYMBOL(snd_usbmidi_disconnect);
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