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[ALSA] usb-audio: fix parsing of SysEx messages from CME keyboards
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / usbmidi.c
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 <sound/driver.h>
39 #include <linux/kernel.h>
40 #include <linux/types.h>
41 #include <linux/bitops.h>
42 #include <linux/interrupt.h>
43 #include <linux/spinlock.h>
44 #include <linux/string.h>
45 #include <linux/init.h>
46 #include <linux/slab.h>
47 #include <linux/timer.h>
48 #include <linux/usb.h>
49 #include <sound/core.h>
50 #include <sound/rawmidi.h>
51 #include <sound/asequencer.h>
52 #include "usbaudio.h"
53
54
55 /*
56 * define this to log all USB packets
57 */
58 /* #define DUMP_PACKETS */
59
60 /*
61 * how long to wait after some USB errors, so that khubd can disconnect() us
62 * without too many spurious errors
63 */
64 #define ERROR_DELAY_JIFFIES (HZ / 10)
65
66
67 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
68 MODULE_DESCRIPTION("USB Audio/MIDI helper module");
69 MODULE_LICENSE("Dual BSD/GPL");
70
71
72 struct usb_ms_header_descriptor {
73 __u8 bLength;
74 __u8 bDescriptorType;
75 __u8 bDescriptorSubtype;
76 __u8 bcdMSC[2];
77 __le16 wTotalLength;
78 } __attribute__ ((packed));
79
80 struct usb_ms_endpoint_descriptor {
81 __u8 bLength;
82 __u8 bDescriptorType;
83 __u8 bDescriptorSubtype;
84 __u8 bNumEmbMIDIJack;
85 __u8 baAssocJackID[0];
86 } __attribute__ ((packed));
87
88 struct snd_usb_midi_in_endpoint;
89 struct snd_usb_midi_out_endpoint;
90 struct snd_usb_midi_endpoint;
91
92 struct usb_protocol_ops {
93 void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int);
94 void (*output)(struct snd_usb_midi_out_endpoint*);
95 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
96 void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*);
97 void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*);
98 };
99
100 struct snd_usb_midi {
101 struct snd_usb_audio *chip;
102 struct usb_interface *iface;
103 const struct snd_usb_audio_quirk *quirk;
104 struct snd_rawmidi *rmidi;
105 struct usb_protocol_ops* usb_protocol_ops;
106 struct list_head list;
107 struct timer_list error_timer;
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 };
115
116 struct snd_usb_midi_out_endpoint {
117 struct snd_usb_midi* umidi;
118 struct urb* urb;
119 int urb_active;
120 int max_transfer; /* size of urb buffer */
121 struct tasklet_struct tasklet;
122
123 spinlock_t buffer_lock;
124
125 struct usbmidi_out_port {
126 struct snd_usb_midi_out_endpoint* ep;
127 struct snd_rawmidi_substream *substream;
128 int active;
129 uint8_t cable; /* cable number << 4 */
130 uint8_t state;
131 #define STATE_UNKNOWN 0
132 #define STATE_1PARAM 1
133 #define STATE_2PARAM_1 2
134 #define STATE_2PARAM_2 3
135 #define STATE_SYSEX_0 4
136 #define STATE_SYSEX_1 5
137 #define STATE_SYSEX_2 6
138 uint8_t data[2];
139 } ports[0x10];
140 int current_port;
141 };
142
143 struct snd_usb_midi_in_endpoint {
144 struct snd_usb_midi* umidi;
145 struct urb* urb;
146 struct usbmidi_in_port {
147 struct snd_rawmidi_substream *substream;
148 u8 running_status_length;
149 } ports[0x10];
150 u8 seen_f5;
151 u8 error_resubmit;
152 int current_port;
153 };
154
155 static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep);
156
157 static const uint8_t snd_usbmidi_cin_length[] = {
158 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
159 };
160
161 /*
162 * Submits the URB, with error handling.
163 */
164 static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags)
165 {
166 int err = usb_submit_urb(urb, flags);
167 if (err < 0 && err != -ENODEV)
168 snd_printk(KERN_ERR "usb_submit_urb: %d\n", err);
169 return err;
170 }
171
172 /*
173 * Error handling for URB completion functions.
174 */
175 static int snd_usbmidi_urb_error(int status)
176 {
177 switch (status) {
178 /* manually unlinked, or device gone */
179 case -ENOENT:
180 case -ECONNRESET:
181 case -ESHUTDOWN:
182 case -ENODEV:
183 return -ENODEV;
184 /* errors that might occur during unplugging */
185 case -EPROTO:
186 case -ETIME:
187 case -EILSEQ:
188 return -EIO;
189 default:
190 snd_printk(KERN_ERR "urb status %d\n", status);
191 return 0; /* continue */
192 }
193 }
194
195 /*
196 * Receives a chunk of MIDI data.
197 */
198 static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx,
199 uint8_t* data, int length)
200 {
201 struct usbmidi_in_port* port = &ep->ports[portidx];
202
203 if (!port->substream) {
204 snd_printd("unexpected port %d!\n", portidx);
205 return;
206 }
207 if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
208 return;
209 snd_rawmidi_receive(port->substream, data, length);
210 }
211
212 #ifdef DUMP_PACKETS
213 static void dump_urb(const char *type, const u8 *data, int length)
214 {
215 snd_printk(KERN_DEBUG "%s packet: [", type);
216 for (; length > 0; ++data, --length)
217 printk(" %02x", *data);
218 printk(" ]\n");
219 }
220 #else
221 #define dump_urb(type, data, length) /* nothing */
222 #endif
223
224 /*
225 * Processes the data read from the device.
226 */
227 static void snd_usbmidi_in_urb_complete(struct urb* urb)
228 {
229 struct snd_usb_midi_in_endpoint* ep = urb->context;
230
231 if (urb->status == 0) {
232 dump_urb("received", urb->transfer_buffer, urb->actual_length);
233 ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
234 urb->actual_length);
235 } else {
236 int err = snd_usbmidi_urb_error(urb->status);
237 if (err < 0) {
238 if (err != -ENODEV) {
239 ep->error_resubmit = 1;
240 mod_timer(&ep->umidi->error_timer,
241 jiffies + ERROR_DELAY_JIFFIES);
242 }
243 return;
244 }
245 }
246
247 urb->dev = ep->umidi->chip->dev;
248 snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
249 }
250
251 static void snd_usbmidi_out_urb_complete(struct urb* urb)
252 {
253 struct snd_usb_midi_out_endpoint* ep = urb->context;
254
255 spin_lock(&ep->buffer_lock);
256 ep->urb_active = 0;
257 spin_unlock(&ep->buffer_lock);
258 if (urb->status < 0) {
259 int err = snd_usbmidi_urb_error(urb->status);
260 if (err < 0) {
261 if (err != -ENODEV)
262 mod_timer(&ep->umidi->error_timer,
263 jiffies + ERROR_DELAY_JIFFIES);
264 return;
265 }
266 }
267 snd_usbmidi_do_output(ep);
268 }
269
270 /*
271 * This is called when some data should be transferred to the device
272 * (from one or more substreams).
273 */
274 static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep)
275 {
276 struct urb* urb = ep->urb;
277 unsigned long flags;
278
279 spin_lock_irqsave(&ep->buffer_lock, flags);
280 if (ep->urb_active || ep->umidi->chip->shutdown) {
281 spin_unlock_irqrestore(&ep->buffer_lock, flags);
282 return;
283 }
284
285 urb->transfer_buffer_length = 0;
286 ep->umidi->usb_protocol_ops->output(ep);
287
288 if (urb->transfer_buffer_length > 0) {
289 dump_urb("sending", urb->transfer_buffer,
290 urb->transfer_buffer_length);
291 urb->dev = ep->umidi->chip->dev;
292 ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0;
293 }
294 spin_unlock_irqrestore(&ep->buffer_lock, flags);
295 }
296
297 static void snd_usbmidi_out_tasklet(unsigned long data)
298 {
299 struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data;
300
301 snd_usbmidi_do_output(ep);
302 }
303
304 /* called after transfers had been interrupted due to some USB error */
305 static void snd_usbmidi_error_timer(unsigned long data)
306 {
307 struct snd_usb_midi *umidi = (struct snd_usb_midi *)data;
308 int i;
309
310 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
311 struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
312 if (in && in->error_resubmit) {
313 in->error_resubmit = 0;
314 in->urb->dev = umidi->chip->dev;
315 snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC);
316 }
317 if (umidi->endpoints[i].out)
318 snd_usbmidi_do_output(umidi->endpoints[i].out);
319 }
320 }
321
322 /* helper function to send static data that may not DMA-able */
323 static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep,
324 const void *data, int len)
325 {
326 int err;
327 void *buf = kmemdup(data, len, GFP_KERNEL);
328 if (!buf)
329 return -ENOMEM;
330 dump_urb("sending", buf, len);
331 err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len,
332 NULL, 250);
333 kfree(buf);
334 return err;
335 }
336
337 /*
338 * Standard USB MIDI protocol: see the spec.
339 * Midiman protocol: like the standard protocol, but the control byte is the
340 * fourth byte in each packet, and uses length instead of CIN.
341 */
342
343 static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep,
344 uint8_t* buffer, int buffer_length)
345 {
346 int i;
347
348 for (i = 0; i + 3 < buffer_length; i += 4)
349 if (buffer[i] != 0) {
350 int cable = buffer[i] >> 4;
351 int length = snd_usbmidi_cin_length[buffer[i] & 0x0f];
352 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
353 }
354 }
355
356 static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep,
357 uint8_t* buffer, int buffer_length)
358 {
359 int i;
360
361 for (i = 0; i + 3 < buffer_length; i += 4)
362 if (buffer[i + 3] != 0) {
363 int port = buffer[i + 3] >> 4;
364 int length = buffer[i + 3] & 3;
365 snd_usbmidi_input_data(ep, port, &buffer[i], length);
366 }
367 }
368
369 /*
370 * Buggy M-Audio device: running status on input results in a packet that has
371 * the data bytes but not the status byte and that is marked with CIN 4.
372 */
373 static void snd_usbmidi_maudio_broken_running_status_input(
374 struct snd_usb_midi_in_endpoint* ep,
375 uint8_t* buffer, int buffer_length)
376 {
377 int i;
378
379 for (i = 0; i + 3 < buffer_length; i += 4)
380 if (buffer[i] != 0) {
381 int cable = buffer[i] >> 4;
382 u8 cin = buffer[i] & 0x0f;
383 struct usbmidi_in_port *port = &ep->ports[cable];
384 int length;
385
386 length = snd_usbmidi_cin_length[cin];
387 if (cin == 0xf && buffer[i + 1] >= 0xf8)
388 ; /* realtime msg: no running status change */
389 else if (cin >= 0x8 && cin <= 0xe)
390 /* channel msg */
391 port->running_status_length = length - 1;
392 else if (cin == 0x4 &&
393 port->running_status_length != 0 &&
394 buffer[i + 1] < 0x80)
395 /* CIN 4 that is not a SysEx */
396 length = port->running_status_length;
397 else
398 /*
399 * All other msgs cannot begin running status.
400 * (A channel msg sent as two or three CIN 0xF
401 * packets could in theory, but this device
402 * doesn't use this format.)
403 */
404 port->running_status_length = 0;
405 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
406 }
407 }
408
409 /*
410 * CME protocol: like the standard protocol, but SysEx commands are sent as a
411 * single USB packet preceded by a 0x0F byte.
412 */
413 static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
414 uint8_t *buffer, int buffer_length)
415 {
416 if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
417 snd_usbmidi_standard_input(ep, buffer, buffer_length);
418 else
419 snd_usbmidi_input_data(ep, buffer[0] >> 4,
420 &buffer[1], buffer_length - 1);
421 }
422
423 /*
424 * Adds one USB MIDI packet to the output buffer.
425 */
426 static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0,
427 uint8_t p1, uint8_t p2, uint8_t p3)
428 {
429
430 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
431 buf[0] = p0;
432 buf[1] = p1;
433 buf[2] = p2;
434 buf[3] = p3;
435 urb->transfer_buffer_length += 4;
436 }
437
438 /*
439 * Adds one Midiman packet to the output buffer.
440 */
441 static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0,
442 uint8_t p1, uint8_t p2, uint8_t p3)
443 {
444
445 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
446 buf[0] = p1;
447 buf[1] = p2;
448 buf[2] = p3;
449 buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f];
450 urb->transfer_buffer_length += 4;
451 }
452
453 /*
454 * Converts MIDI commands to USB MIDI packets.
455 */
456 static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port,
457 uint8_t b, struct urb* urb)
458 {
459 uint8_t p0 = port->cable;
460 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) =
461 port->ep->umidi->usb_protocol_ops->output_packet;
462
463 if (b >= 0xf8) {
464 output_packet(urb, p0 | 0x0f, b, 0, 0);
465 } else if (b >= 0xf0) {
466 switch (b) {
467 case 0xf0:
468 port->data[0] = b;
469 port->state = STATE_SYSEX_1;
470 break;
471 case 0xf1:
472 case 0xf3:
473 port->data[0] = b;
474 port->state = STATE_1PARAM;
475 break;
476 case 0xf2:
477 port->data[0] = b;
478 port->state = STATE_2PARAM_1;
479 break;
480 case 0xf4:
481 case 0xf5:
482 port->state = STATE_UNKNOWN;
483 break;
484 case 0xf6:
485 output_packet(urb, p0 | 0x05, 0xf6, 0, 0);
486 port->state = STATE_UNKNOWN;
487 break;
488 case 0xf7:
489 switch (port->state) {
490 case STATE_SYSEX_0:
491 output_packet(urb, p0 | 0x05, 0xf7, 0, 0);
492 break;
493 case STATE_SYSEX_1:
494 output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0);
495 break;
496 case STATE_SYSEX_2:
497 output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7);
498 break;
499 }
500 port->state = STATE_UNKNOWN;
501 break;
502 }
503 } else if (b >= 0x80) {
504 port->data[0] = b;
505 if (b >= 0xc0 && b <= 0xdf)
506 port->state = STATE_1PARAM;
507 else
508 port->state = STATE_2PARAM_1;
509 } else { /* b < 0x80 */
510 switch (port->state) {
511 case STATE_1PARAM:
512 if (port->data[0] < 0xf0) {
513 p0 |= port->data[0] >> 4;
514 } else {
515 p0 |= 0x02;
516 port->state = STATE_UNKNOWN;
517 }
518 output_packet(urb, p0, port->data[0], b, 0);
519 break;
520 case STATE_2PARAM_1:
521 port->data[1] = b;
522 port->state = STATE_2PARAM_2;
523 break;
524 case STATE_2PARAM_2:
525 if (port->data[0] < 0xf0) {
526 p0 |= port->data[0] >> 4;
527 port->state = STATE_2PARAM_1;
528 } else {
529 p0 |= 0x03;
530 port->state = STATE_UNKNOWN;
531 }
532 output_packet(urb, p0, port->data[0], port->data[1], b);
533 break;
534 case STATE_SYSEX_0:
535 port->data[0] = b;
536 port->state = STATE_SYSEX_1;
537 break;
538 case STATE_SYSEX_1:
539 port->data[1] = b;
540 port->state = STATE_SYSEX_2;
541 break;
542 case STATE_SYSEX_2:
543 output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b);
544 port->state = STATE_SYSEX_0;
545 break;
546 }
547 }
548 }
549
550 static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep)
551 {
552 struct urb* urb = ep->urb;
553 int p;
554
555 /* FIXME: lower-numbered ports can starve higher-numbered ports */
556 for (p = 0; p < 0x10; ++p) {
557 struct usbmidi_out_port* port = &ep->ports[p];
558 if (!port->active)
559 continue;
560 while (urb->transfer_buffer_length + 3 < ep->max_transfer) {
561 uint8_t b;
562 if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) {
563 port->active = 0;
564 break;
565 }
566 snd_usbmidi_transmit_byte(port, b, urb);
567 }
568 }
569 }
570
571 static struct usb_protocol_ops snd_usbmidi_standard_ops = {
572 .input = snd_usbmidi_standard_input,
573 .output = snd_usbmidi_standard_output,
574 .output_packet = snd_usbmidi_output_standard_packet,
575 };
576
577 static struct usb_protocol_ops snd_usbmidi_midiman_ops = {
578 .input = snd_usbmidi_midiman_input,
579 .output = snd_usbmidi_standard_output,
580 .output_packet = snd_usbmidi_output_midiman_packet,
581 };
582
583 static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = {
584 .input = snd_usbmidi_maudio_broken_running_status_input,
585 .output = snd_usbmidi_standard_output,
586 .output_packet = snd_usbmidi_output_standard_packet,
587 };
588
589 static struct usb_protocol_ops snd_usbmidi_cme_ops = {
590 .input = snd_usbmidi_cme_input,
591 .output = snd_usbmidi_standard_output,
592 .output_packet = snd_usbmidi_output_standard_packet,
593 };
594
595 /*
596 * Novation USB MIDI protocol: number of data bytes is in the first byte
597 * (when receiving) (+1!) or in the second byte (when sending); data begins
598 * at the third byte.
599 */
600
601 static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep,
602 uint8_t* buffer, int buffer_length)
603 {
604 if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
605 return;
606 snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
607 }
608
609 static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep)
610 {
611 uint8_t* transfer_buffer;
612 int count;
613
614 if (!ep->ports[0].active)
615 return;
616 transfer_buffer = ep->urb->transfer_buffer;
617 count = snd_rawmidi_transmit(ep->ports[0].substream,
618 &transfer_buffer[2],
619 ep->max_transfer - 2);
620 if (count < 1) {
621 ep->ports[0].active = 0;
622 return;
623 }
624 transfer_buffer[0] = 0;
625 transfer_buffer[1] = count;
626 ep->urb->transfer_buffer_length = 2 + count;
627 }
628
629 static struct usb_protocol_ops snd_usbmidi_novation_ops = {
630 .input = snd_usbmidi_novation_input,
631 .output = snd_usbmidi_novation_output,
632 };
633
634 /*
635 * "raw" protocol: used by the MOTU FastLane.
636 */
637
638 static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
639 uint8_t* buffer, int buffer_length)
640 {
641 snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
642 }
643
644 static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep)
645 {
646 int count;
647
648 if (!ep->ports[0].active)
649 return;
650 count = snd_rawmidi_transmit(ep->ports[0].substream,
651 ep->urb->transfer_buffer,
652 ep->max_transfer);
653 if (count < 1) {
654 ep->ports[0].active = 0;
655 return;
656 }
657 ep->urb->transfer_buffer_length = count;
658 }
659
660 static struct usb_protocol_ops snd_usbmidi_raw_ops = {
661 .input = snd_usbmidi_raw_input,
662 .output = snd_usbmidi_raw_output,
663 };
664
665 /*
666 * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
667 */
668
669 static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep)
670 {
671 static const u8 init_data[] = {
672 /* initialization magic: "get version" */
673 0xf0,
674 0x00, 0x20, 0x31, /* Emagic */
675 0x64, /* Unitor8 */
676 0x0b, /* version number request */
677 0x00, /* command version */
678 0x00, /* EEPROM, box 0 */
679 0xf7
680 };
681 send_bulk_static_data(ep, init_data, sizeof(init_data));
682 /* while we're at it, pour on more magic */
683 send_bulk_static_data(ep, init_data, sizeof(init_data));
684 }
685
686 static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep)
687 {
688 static const u8 finish_data[] = {
689 /* switch to patch mode with last preset */
690 0xf0,
691 0x00, 0x20, 0x31, /* Emagic */
692 0x64, /* Unitor8 */
693 0x10, /* patch switch command */
694 0x00, /* command version */
695 0x7f, /* to all boxes */
696 0x40, /* last preset in EEPROM */
697 0xf7
698 };
699 send_bulk_static_data(ep, finish_data, sizeof(finish_data));
700 }
701
702 static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep,
703 uint8_t* buffer, int buffer_length)
704 {
705 int i;
706
707 /* FF indicates end of valid data */
708 for (i = 0; i < buffer_length; ++i)
709 if (buffer[i] == 0xff) {
710 buffer_length = i;
711 break;
712 }
713
714 /* handle F5 at end of last buffer */
715 if (ep->seen_f5)
716 goto switch_port;
717
718 while (buffer_length > 0) {
719 /* determine size of data until next F5 */
720 for (i = 0; i < buffer_length; ++i)
721 if (buffer[i] == 0xf5)
722 break;
723 snd_usbmidi_input_data(ep, ep->current_port, buffer, i);
724 buffer += i;
725 buffer_length -= i;
726
727 if (buffer_length <= 0)
728 break;
729 /* assert(buffer[0] == 0xf5); */
730 ep->seen_f5 = 1;
731 ++buffer;
732 --buffer_length;
733
734 switch_port:
735 if (buffer_length <= 0)
736 break;
737 if (buffer[0] < 0x80) {
738 ep->current_port = (buffer[0] - 1) & 15;
739 ++buffer;
740 --buffer_length;
741 }
742 ep->seen_f5 = 0;
743 }
744 }
745
746 static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep)
747 {
748 int port0 = ep->current_port;
749 uint8_t* buf = ep->urb->transfer_buffer;
750 int buf_free = ep->max_transfer;
751 int length, i;
752
753 for (i = 0; i < 0x10; ++i) {
754 /* round-robin, starting at the last current port */
755 int portnum = (port0 + i) & 15;
756 struct usbmidi_out_port* port = &ep->ports[portnum];
757
758 if (!port->active)
759 continue;
760 if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) {
761 port->active = 0;
762 continue;
763 }
764
765 if (portnum != ep->current_port) {
766 if (buf_free < 2)
767 break;
768 ep->current_port = portnum;
769 buf[0] = 0xf5;
770 buf[1] = (portnum + 1) & 15;
771 buf += 2;
772 buf_free -= 2;
773 }
774
775 if (buf_free < 1)
776 break;
777 length = snd_rawmidi_transmit(port->substream, buf, buf_free);
778 if (length > 0) {
779 buf += length;
780 buf_free -= length;
781 if (buf_free < 1)
782 break;
783 }
784 }
785 if (buf_free < ep->max_transfer && buf_free > 0) {
786 *buf = 0xff;
787 --buf_free;
788 }
789 ep->urb->transfer_buffer_length = ep->max_transfer - buf_free;
790 }
791
792 static struct usb_protocol_ops snd_usbmidi_emagic_ops = {
793 .input = snd_usbmidi_emagic_input,
794 .output = snd_usbmidi_emagic_output,
795 .init_out_endpoint = snd_usbmidi_emagic_init_out,
796 .finish_out_endpoint = snd_usbmidi_emagic_finish_out,
797 };
798
799
800 static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
801 {
802 struct snd_usb_midi* umidi = substream->rmidi->private_data;
803 struct usbmidi_out_port* port = NULL;
804 int i, j;
805
806 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
807 if (umidi->endpoints[i].out)
808 for (j = 0; j < 0x10; ++j)
809 if (umidi->endpoints[i].out->ports[j].substream == substream) {
810 port = &umidi->endpoints[i].out->ports[j];
811 break;
812 }
813 if (!port) {
814 snd_BUG();
815 return -ENXIO;
816 }
817 substream->runtime->private_data = port;
818 port->state = STATE_UNKNOWN;
819 return 0;
820 }
821
822 static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
823 {
824 return 0;
825 }
826
827 static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)
828 {
829 struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data;
830
831 port->active = up;
832 if (up) {
833 if (port->ep->umidi->chip->shutdown) {
834 /* gobble up remaining bytes to prevent wait in
835 * snd_rawmidi_drain_output */
836 while (!snd_rawmidi_transmit_empty(substream))
837 snd_rawmidi_transmit_ack(substream, 1);
838 return;
839 }
840 tasklet_hi_schedule(&port->ep->tasklet);
841 }
842 }
843
844 static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
845 {
846 return 0;
847 }
848
849 static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream)
850 {
851 return 0;
852 }
853
854 static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
855 {
856 struct snd_usb_midi* umidi = substream->rmidi->private_data;
857
858 if (up)
859 set_bit(substream->number, &umidi->input_triggered);
860 else
861 clear_bit(substream->number, &umidi->input_triggered);
862 }
863
864 static struct snd_rawmidi_ops snd_usbmidi_output_ops = {
865 .open = snd_usbmidi_output_open,
866 .close = snd_usbmidi_output_close,
867 .trigger = snd_usbmidi_output_trigger,
868 };
869
870 static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
871 .open = snd_usbmidi_input_open,
872 .close = snd_usbmidi_input_close,
873 .trigger = snd_usbmidi_input_trigger
874 };
875
876 /*
877 * Frees an input endpoint.
878 * May be called when ep hasn't been initialized completely.
879 */
880 static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep)
881 {
882 if (ep->urb) {
883 usb_buffer_free(ep->umidi->chip->dev,
884 ep->urb->transfer_buffer_length,
885 ep->urb->transfer_buffer,
886 ep->urb->transfer_dma);
887 usb_free_urb(ep->urb);
888 }
889 kfree(ep);
890 }
891
892 /*
893 * Creates an input endpoint.
894 */
895 static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
896 struct snd_usb_midi_endpoint_info* ep_info,
897 struct snd_usb_midi_endpoint* rep)
898 {
899 struct snd_usb_midi_in_endpoint* ep;
900 void* buffer;
901 unsigned int pipe;
902 int length;
903
904 rep->in = NULL;
905 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
906 if (!ep)
907 return -ENOMEM;
908 ep->umidi = umidi;
909
910 ep->urb = usb_alloc_urb(0, GFP_KERNEL);
911 if (!ep->urb) {
912 snd_usbmidi_in_endpoint_delete(ep);
913 return -ENOMEM;
914 }
915 if (ep_info->in_interval)
916 pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep);
917 else
918 pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep);
919 length = usb_maxpacket(umidi->chip->dev, pipe, 0);
920 buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL,
921 &ep->urb->transfer_dma);
922 if (!buffer) {
923 snd_usbmidi_in_endpoint_delete(ep);
924 return -ENOMEM;
925 }
926 if (ep_info->in_interval)
927 usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
928 length, snd_usbmidi_in_urb_complete, ep,
929 ep_info->in_interval);
930 else
931 usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer,
932 length, snd_usbmidi_in_urb_complete, ep);
933 ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
934
935 rep->in = ep;
936 return 0;
937 }
938
939 static unsigned int snd_usbmidi_count_bits(unsigned int x)
940 {
941 unsigned int bits;
942
943 for (bits = 0; x; ++bits)
944 x &= x - 1;
945 return bits;
946 }
947
948 /*
949 * Frees an output endpoint.
950 * May be called when ep hasn't been initialized completely.
951 */
952 static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint* ep)
953 {
954 if (ep->urb) {
955 usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer,
956 ep->urb->transfer_buffer,
957 ep->urb->transfer_dma);
958 usb_free_urb(ep->urb);
959 }
960 kfree(ep);
961 }
962
963 /*
964 * Creates an output endpoint, and initializes output ports.
965 */
966 static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
967 struct snd_usb_midi_endpoint_info* ep_info,
968 struct snd_usb_midi_endpoint* rep)
969 {
970 struct snd_usb_midi_out_endpoint* ep;
971 int i;
972 unsigned int pipe;
973 void* buffer;
974
975 rep->out = NULL;
976 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
977 if (!ep)
978 return -ENOMEM;
979 ep->umidi = umidi;
980
981 ep->urb = usb_alloc_urb(0, GFP_KERNEL);
982 if (!ep->urb) {
983 snd_usbmidi_out_endpoint_delete(ep);
984 return -ENOMEM;
985 }
986 /* we never use interrupt output pipes */
987 pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep);
988 if (umidi->chip->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */
989 /* FIXME: we need more URBs to get reasonable bandwidth here: */
990 ep->max_transfer = 4;
991 else
992 ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1);
993 buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer,
994 GFP_KERNEL, &ep->urb->transfer_dma);
995 if (!buffer) {
996 snd_usbmidi_out_endpoint_delete(ep);
997 return -ENOMEM;
998 }
999 usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer,
1000 ep->max_transfer, snd_usbmidi_out_urb_complete, ep);
1001 ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1002
1003 spin_lock_init(&ep->buffer_lock);
1004 tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
1005
1006 for (i = 0; i < 0x10; ++i)
1007 if (ep_info->out_cables & (1 << i)) {
1008 ep->ports[i].ep = ep;
1009 ep->ports[i].cable = i << 4;
1010 }
1011
1012 if (umidi->usb_protocol_ops->init_out_endpoint)
1013 umidi->usb_protocol_ops->init_out_endpoint(ep);
1014
1015 rep->out = ep;
1016 return 0;
1017 }
1018
1019 /*
1020 * Frees everything.
1021 */
1022 static void snd_usbmidi_free(struct snd_usb_midi* umidi)
1023 {
1024 int i;
1025
1026 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1027 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1028 if (ep->out)
1029 snd_usbmidi_out_endpoint_delete(ep->out);
1030 if (ep->in)
1031 snd_usbmidi_in_endpoint_delete(ep->in);
1032 }
1033 kfree(umidi);
1034 }
1035
1036 /*
1037 * Unlinks all URBs (must be done before the usb_device is deleted).
1038 */
1039 void snd_usbmidi_disconnect(struct list_head* p)
1040 {
1041 struct snd_usb_midi* umidi;
1042 int i;
1043
1044 umidi = list_entry(p, struct snd_usb_midi, list);
1045 del_timer_sync(&umidi->error_timer);
1046 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1047 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1048 if (ep->out)
1049 tasklet_kill(&ep->out->tasklet);
1050 if (ep->out && ep->out->urb) {
1051 usb_kill_urb(ep->out->urb);
1052 if (umidi->usb_protocol_ops->finish_out_endpoint)
1053 umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
1054 }
1055 if (ep->in)
1056 usb_kill_urb(ep->in->urb);
1057 }
1058 }
1059
1060 static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi)
1061 {
1062 struct snd_usb_midi* umidi = rmidi->private_data;
1063 snd_usbmidi_free(umidi);
1064 }
1065
1066 static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi,
1067 int stream, int number)
1068 {
1069 struct list_head* list;
1070
1071 list_for_each(list, &umidi->rmidi->streams[stream].substreams) {
1072 struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list);
1073 if (substream->number == number)
1074 return substream;
1075 }
1076 return NULL;
1077 }
1078
1079 /*
1080 * This list specifies names for ports that do not fit into the standard
1081 * "(product) MIDI (n)" schema because they aren't external MIDI ports,
1082 * such as internal control or synthesizer ports.
1083 */
1084 static struct port_info {
1085 u32 id;
1086 short int port;
1087 short int voices;
1088 const char *name;
1089 unsigned int seq_flags;
1090 } snd_usbmidi_port_info[] = {
1091 #define PORT_INFO(vendor, product, num, name_, voices_, flags) \
1092 { .id = USB_ID(vendor, product), \
1093 .port = num, .voices = voices_, \
1094 .name = name_, .seq_flags = flags }
1095 #define EXTERNAL_PORT(vendor, product, num, name) \
1096 PORT_INFO(vendor, product, num, name, 0, \
1097 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1098 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1099 SNDRV_SEQ_PORT_TYPE_PORT)
1100 #define CONTROL_PORT(vendor, product, num, name) \
1101 PORT_INFO(vendor, product, num, name, 0, \
1102 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1103 SNDRV_SEQ_PORT_TYPE_HARDWARE)
1104 #define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \
1105 PORT_INFO(vendor, product, num, name, voices, \
1106 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1107 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1108 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1109 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1110 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1111 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1112 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1113 #define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \
1114 PORT_INFO(vendor, product, num, name, voices, \
1115 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1116 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1117 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1118 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1119 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1120 SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \
1121 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1122 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1123 /* Roland UA-100 */
1124 CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"),
1125 /* Roland SC-8850 */
1126 SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128),
1127 SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128),
1128 SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128),
1129 SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128),
1130 EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"),
1131 EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"),
1132 /* Roland U-8 */
1133 EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"),
1134 CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"),
1135 /* Roland SC-8820 */
1136 SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64),
1137 SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64),
1138 EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"),
1139 /* Roland SK-500 */
1140 SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64),
1141 SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64),
1142 EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"),
1143 /* Roland SC-D70 */
1144 SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64),
1145 SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64),
1146 EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"),
1147 /* Edirol UM-880 */
1148 CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"),
1149 /* Edirol SD-90 */
1150 ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128),
1151 ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128),
1152 EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"),
1153 EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"),
1154 /* Edirol UM-550 */
1155 CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"),
1156 /* Edirol SD-20 */
1157 ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64),
1158 ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64),
1159 EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"),
1160 /* Edirol SD-80 */
1161 ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128),
1162 ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128),
1163 EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"),
1164 EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"),
1165 /* Edirol UA-700 */
1166 EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"),
1167 CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"),
1168 /* Roland VariOS */
1169 EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"),
1170 EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"),
1171 EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"),
1172 /* Edirol PCR */
1173 EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"),
1174 EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"),
1175 EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"),
1176 /* BOSS GS-10 */
1177 EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"),
1178 CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"),
1179 /* Edirol UA-1000 */
1180 EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"),
1181 CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"),
1182 /* Edirol UR-80 */
1183 EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"),
1184 EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"),
1185 EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"),
1186 /* Edirol PCR-A */
1187 EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"),
1188 EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"),
1189 EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"),
1190 /* Edirol UM-3EX */
1191 CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"),
1192 /* M-Audio MidiSport 8x8 */
1193 CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"),
1194 CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"),
1195 /* MOTU Fastlane */
1196 EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"),
1197 EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"),
1198 /* Emagic Unitor8/AMT8/MT4 */
1199 EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
1200 EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
1201 EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
1202 };
1203
1204 static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number)
1205 {
1206 int i;
1207
1208 for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) {
1209 if (snd_usbmidi_port_info[i].id == umidi->chip->usb_id &&
1210 snd_usbmidi_port_info[i].port == number)
1211 return &snd_usbmidi_port_info[i];
1212 }
1213 return NULL;
1214 }
1215
1216 static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number,
1217 struct snd_seq_port_info *seq_port_info)
1218 {
1219 struct snd_usb_midi *umidi = rmidi->private_data;
1220 struct port_info *port_info;
1221
1222 /* TODO: read port flags from descriptors */
1223 port_info = find_port_info(umidi, number);
1224 if (port_info) {
1225 seq_port_info->type = port_info->seq_flags;
1226 seq_port_info->midi_voices = port_info->voices;
1227 }
1228 }
1229
1230 static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi,
1231 int stream, int number,
1232 struct snd_rawmidi_substream ** rsubstream)
1233 {
1234 struct port_info *port_info;
1235 const char *name_format;
1236
1237 struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number);
1238 if (!substream) {
1239 snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number);
1240 return;
1241 }
1242
1243 /* TODO: read port name from jack descriptor */
1244 port_info = find_port_info(umidi, number);
1245 name_format = port_info ? port_info->name : "%s MIDI %d";
1246 snprintf(substream->name, sizeof(substream->name),
1247 name_format, umidi->chip->card->shortname, number + 1);
1248
1249 *rsubstream = substream;
1250 }
1251
1252 /*
1253 * Creates the endpoints and their ports.
1254 */
1255 static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi,
1256 struct snd_usb_midi_endpoint_info* endpoints)
1257 {
1258 int i, j, err;
1259 int out_ports = 0, in_ports = 0;
1260
1261 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1262 if (endpoints[i].out_cables) {
1263 err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i],
1264 &umidi->endpoints[i]);
1265 if (err < 0)
1266 return err;
1267 }
1268 if (endpoints[i].in_cables) {
1269 err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i],
1270 &umidi->endpoints[i]);
1271 if (err < 0)
1272 return err;
1273 }
1274
1275 for (j = 0; j < 0x10; ++j) {
1276 if (endpoints[i].out_cables & (1 << j)) {
1277 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports,
1278 &umidi->endpoints[i].out->ports[j].substream);
1279 ++out_ports;
1280 }
1281 if (endpoints[i].in_cables & (1 << j)) {
1282 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports,
1283 &umidi->endpoints[i].in->ports[j].substream);
1284 ++in_ports;
1285 }
1286 }
1287 }
1288 snd_printdd(KERN_INFO "created %d output and %d input ports\n",
1289 out_ports, in_ports);
1290 return 0;
1291 }
1292
1293 /*
1294 * Returns MIDIStreaming device capabilities.
1295 */
1296 static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
1297 struct snd_usb_midi_endpoint_info* endpoints)
1298 {
1299 struct usb_interface* intf;
1300 struct usb_host_interface *hostif;
1301 struct usb_interface_descriptor* intfd;
1302 struct usb_ms_header_descriptor* ms_header;
1303 struct usb_host_endpoint *hostep;
1304 struct usb_endpoint_descriptor* ep;
1305 struct usb_ms_endpoint_descriptor* ms_ep;
1306 int i, epidx;
1307
1308 intf = umidi->iface;
1309 if (!intf)
1310 return -ENXIO;
1311 hostif = &intf->altsetting[0];
1312 intfd = get_iface_desc(hostif);
1313 ms_header = (struct usb_ms_header_descriptor*)hostif->extra;
1314 if (hostif->extralen >= 7 &&
1315 ms_header->bLength >= 7 &&
1316 ms_header->bDescriptorType == USB_DT_CS_INTERFACE &&
1317 ms_header->bDescriptorSubtype == HEADER)
1318 snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n",
1319 ms_header->bcdMSC[1], ms_header->bcdMSC[0]);
1320 else
1321 snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n");
1322
1323 epidx = 0;
1324 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1325 hostep = &hostif->endpoint[i];
1326 ep = get_ep_desc(hostep);
1327 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
1328 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1329 continue;
1330 ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
1331 if (hostep->extralen < 4 ||
1332 ms_ep->bLength < 4 ||
1333 ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
1334 ms_ep->bDescriptorSubtype != MS_GENERAL)
1335 continue;
1336 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1337 if (endpoints[epidx].out_ep) {
1338 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1339 snd_printk(KERN_WARNING "too many endpoints\n");
1340 break;
1341 }
1342 }
1343 endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1344 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1345 endpoints[epidx].out_interval = ep->bInterval;
1346 endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1347 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1348 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1349 } else {
1350 if (endpoints[epidx].in_ep) {
1351 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1352 snd_printk(KERN_WARNING "too many endpoints\n");
1353 break;
1354 }
1355 }
1356 endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1357 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1358 endpoints[epidx].in_interval = ep->bInterval;
1359 endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1360 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1361 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1362 }
1363 }
1364 return 0;
1365 }
1366
1367 /*
1368 * On Roland devices, use the second alternate setting to be able to use
1369 * the interrupt input endpoint.
1370 */
1371 static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi)
1372 {
1373 struct usb_interface* intf;
1374 struct usb_host_interface *hostif;
1375 struct usb_interface_descriptor* intfd;
1376
1377 intf = umidi->iface;
1378 if (!intf || intf->num_altsetting != 2)
1379 return;
1380
1381 hostif = &intf->altsetting[1];
1382 intfd = get_iface_desc(hostif);
1383 if (intfd->bNumEndpoints != 2 ||
1384 (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ||
1385 (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1386 return;
1387
1388 snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n",
1389 intfd->bAlternateSetting);
1390 usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber,
1391 intfd->bAlternateSetting);
1392 }
1393
1394 /*
1395 * Try to find any usable endpoints in the interface.
1396 */
1397 static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi,
1398 struct snd_usb_midi_endpoint_info* endpoint,
1399 int max_endpoints)
1400 {
1401 struct usb_interface* intf;
1402 struct usb_host_interface *hostif;
1403 struct usb_interface_descriptor* intfd;
1404 struct usb_endpoint_descriptor* epd;
1405 int i, out_eps = 0, in_eps = 0;
1406
1407 if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582)
1408 snd_usbmidi_switch_roland_altsetting(umidi);
1409
1410 if (endpoint[0].out_ep || endpoint[0].in_ep)
1411 return 0;
1412
1413 intf = umidi->iface;
1414 if (!intf || intf->num_altsetting < 1)
1415 return -ENOENT;
1416 hostif = intf->cur_altsetting;
1417 intfd = get_iface_desc(hostif);
1418
1419 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1420 epd = get_endpoint(hostif, i);
1421 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
1422 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1423 continue;
1424 if (out_eps < max_endpoints &&
1425 (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1426 endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1427 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1428 endpoint[out_eps].out_interval = epd->bInterval;
1429 ++out_eps;
1430 }
1431 if (in_eps < max_endpoints &&
1432 (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
1433 endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1434 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1435 endpoint[in_eps].in_interval = epd->bInterval;
1436 ++in_eps;
1437 }
1438 }
1439 return (out_eps || in_eps) ? 0 : -ENOENT;
1440 }
1441
1442 /*
1443 * Detects the endpoints for one-port-per-endpoint protocols.
1444 */
1445 static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi,
1446 struct snd_usb_midi_endpoint_info* endpoints)
1447 {
1448 int err, i;
1449
1450 err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS);
1451 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1452 if (endpoints[i].out_ep)
1453 endpoints[i].out_cables = 0x0001;
1454 if (endpoints[i].in_ep)
1455 endpoints[i].in_cables = 0x0001;
1456 }
1457 return err;
1458 }
1459
1460 /*
1461 * Detects the endpoints and ports of Yamaha devices.
1462 */
1463 static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi,
1464 struct snd_usb_midi_endpoint_info* endpoint)
1465 {
1466 struct usb_interface* intf;
1467 struct usb_host_interface *hostif;
1468 struct usb_interface_descriptor* intfd;
1469 uint8_t* cs_desc;
1470
1471 intf = umidi->iface;
1472 if (!intf)
1473 return -ENOENT;
1474 hostif = intf->altsetting;
1475 intfd = get_iface_desc(hostif);
1476 if (intfd->bNumEndpoints < 1)
1477 return -ENOENT;
1478
1479 /*
1480 * For each port there is one MIDI_IN/OUT_JACK descriptor, not
1481 * necessarily with any useful contents. So simply count 'em.
1482 */
1483 for (cs_desc = hostif->extra;
1484 cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
1485 cs_desc += cs_desc[0]) {
1486 if (cs_desc[1] == USB_DT_CS_INTERFACE) {
1487 if (cs_desc[2] == MIDI_IN_JACK)
1488 endpoint->in_cables = (endpoint->in_cables << 1) | 1;
1489 else if (cs_desc[2] == MIDI_OUT_JACK)
1490 endpoint->out_cables = (endpoint->out_cables << 1) | 1;
1491 }
1492 }
1493 if (!endpoint->in_cables && !endpoint->out_cables)
1494 return -ENOENT;
1495
1496 return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
1497 }
1498
1499 /*
1500 * Creates the endpoints and their ports for Midiman devices.
1501 */
1502 static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi,
1503 struct snd_usb_midi_endpoint_info* endpoint)
1504 {
1505 struct snd_usb_midi_endpoint_info ep_info;
1506 struct usb_interface* intf;
1507 struct usb_host_interface *hostif;
1508 struct usb_interface_descriptor* intfd;
1509 struct usb_endpoint_descriptor* epd;
1510 int cable, err;
1511
1512 intf = umidi->iface;
1513 if (!intf)
1514 return -ENOENT;
1515 hostif = intf->altsetting;
1516 intfd = get_iface_desc(hostif);
1517 /*
1518 * The various MidiSport devices have more or less random endpoint
1519 * numbers, so we have to identify the endpoints by their index in
1520 * the descriptor array, like the driver for that other OS does.
1521 *
1522 * There is one interrupt input endpoint for all input ports, one
1523 * bulk output endpoint for even-numbered ports, and one for odd-
1524 * numbered ports. Both bulk output endpoints have corresponding
1525 * input bulk endpoints (at indices 1 and 3) which aren't used.
1526 */
1527 if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) {
1528 snd_printdd(KERN_ERR "not enough endpoints\n");
1529 return -ENOENT;
1530 }
1531
1532 epd = get_endpoint(hostif, 0);
1533 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1534 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) {
1535 snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n");
1536 return -ENXIO;
1537 }
1538 epd = get_endpoint(hostif, 2);
1539 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
1540 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
1541 snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n");
1542 return -ENXIO;
1543 }
1544 if (endpoint->out_cables > 0x0001) {
1545 epd = get_endpoint(hostif, 4);
1546 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
1547 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
1548 snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n");
1549 return -ENXIO;
1550 }
1551 }
1552
1553 ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1554 ep_info.out_cables = endpoint->out_cables & 0x5555;
1555 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
1556 if (err < 0)
1557 return err;
1558
1559 ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1560 ep_info.in_interval = get_endpoint(hostif, 0)->bInterval;
1561 ep_info.in_cables = endpoint->in_cables;
1562 err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
1563 if (err < 0)
1564 return err;
1565
1566 if (endpoint->out_cables > 0x0001) {
1567 ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1568 ep_info.out_cables = endpoint->out_cables & 0xaaaa;
1569 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]);
1570 if (err < 0)
1571 return err;
1572 }
1573
1574 for (cable = 0; cable < 0x10; ++cable) {
1575 if (endpoint->out_cables & (1 << cable))
1576 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable,
1577 &umidi->endpoints[cable & 1].out->ports[cable].substream);
1578 if (endpoint->in_cables & (1 << cable))
1579 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable,
1580 &umidi->endpoints[0].in->ports[cable].substream);
1581 }
1582 return 0;
1583 }
1584
1585 static struct snd_rawmidi_global_ops snd_usbmidi_ops = {
1586 .get_port_info = snd_usbmidi_get_port_info,
1587 };
1588
1589 static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi,
1590 int out_ports, int in_ports)
1591 {
1592 struct snd_rawmidi *rmidi;
1593 int err;
1594
1595 err = snd_rawmidi_new(umidi->chip->card, "USB MIDI",
1596 umidi->chip->next_midi_device++,
1597 out_ports, in_ports, &rmidi);
1598 if (err < 0)
1599 return err;
1600 strcpy(rmidi->name, umidi->chip->card->shortname);
1601 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
1602 SNDRV_RAWMIDI_INFO_INPUT |
1603 SNDRV_RAWMIDI_INFO_DUPLEX;
1604 rmidi->ops = &snd_usbmidi_ops;
1605 rmidi->private_data = umidi;
1606 rmidi->private_free = snd_usbmidi_rawmidi_free;
1607 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops);
1608 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops);
1609
1610 umidi->rmidi = rmidi;
1611 return 0;
1612 }
1613
1614 /*
1615 * Temporarily stop input.
1616 */
1617 void snd_usbmidi_input_stop(struct list_head* p)
1618 {
1619 struct snd_usb_midi* umidi;
1620 int i;
1621
1622 umidi = list_entry(p, struct snd_usb_midi, list);
1623 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1624 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1625 if (ep->in)
1626 usb_kill_urb(ep->in->urb);
1627 }
1628 }
1629
1630 static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep)
1631 {
1632 if (ep) {
1633 struct urb* urb = ep->urb;
1634 urb->dev = ep->umidi->chip->dev;
1635 snd_usbmidi_submit_urb(urb, GFP_KERNEL);
1636 }
1637 }
1638
1639 /*
1640 * Resume input after a call to snd_usbmidi_input_stop().
1641 */
1642 void snd_usbmidi_input_start(struct list_head* p)
1643 {
1644 struct snd_usb_midi* umidi;
1645 int i;
1646
1647 umidi = list_entry(p, struct snd_usb_midi, list);
1648 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1649 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
1650 }
1651
1652 /*
1653 * Creates and registers everything needed for a MIDI streaming interface.
1654 */
1655 int snd_usb_create_midi_interface(struct snd_usb_audio* chip,
1656 struct usb_interface* iface,
1657 const struct snd_usb_audio_quirk* quirk)
1658 {
1659 struct snd_usb_midi* umidi;
1660 struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS];
1661 int out_ports, in_ports;
1662 int i, err;
1663
1664 umidi = kzalloc(sizeof(*umidi), GFP_KERNEL);
1665 if (!umidi)
1666 return -ENOMEM;
1667 umidi->chip = chip;
1668 umidi->iface = iface;
1669 umidi->quirk = quirk;
1670 umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
1671 init_timer(&umidi->error_timer);
1672 umidi->error_timer.function = snd_usbmidi_error_timer;
1673 umidi->error_timer.data = (unsigned long)umidi;
1674
1675 /* detect the endpoint(s) to use */
1676 memset(endpoints, 0, sizeof(endpoints));
1677 switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) {
1678 case QUIRK_MIDI_STANDARD_INTERFACE:
1679 err = snd_usbmidi_get_ms_info(umidi, endpoints);
1680 if (chip->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */
1681 umidi->usb_protocol_ops =
1682 &snd_usbmidi_maudio_broken_running_status_ops;
1683 break;
1684 case QUIRK_MIDI_FIXED_ENDPOINT:
1685 memcpy(&endpoints[0], quirk->data,
1686 sizeof(struct snd_usb_midi_endpoint_info));
1687 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
1688 break;
1689 case QUIRK_MIDI_YAMAHA:
1690 err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]);
1691 break;
1692 case QUIRK_MIDI_MIDIMAN:
1693 umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
1694 memcpy(&endpoints[0], quirk->data,
1695 sizeof(struct snd_usb_midi_endpoint_info));
1696 err = 0;
1697 break;
1698 case QUIRK_MIDI_NOVATION:
1699 umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
1700 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1701 break;
1702 case QUIRK_MIDI_RAW:
1703 umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
1704 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1705 break;
1706 case QUIRK_MIDI_EMAGIC:
1707 umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops;
1708 memcpy(&endpoints[0], quirk->data,
1709 sizeof(struct snd_usb_midi_endpoint_info));
1710 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
1711 break;
1712 case QUIRK_MIDI_CME:
1713 umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
1714 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1715 break;
1716 default:
1717 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
1718 err = -ENXIO;
1719 break;
1720 }
1721 if (err < 0) {
1722 kfree(umidi);
1723 return err;
1724 }
1725
1726 /* create rawmidi device */
1727 out_ports = 0;
1728 in_ports = 0;
1729 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1730 out_ports += snd_usbmidi_count_bits(endpoints[i].out_cables);
1731 in_ports += snd_usbmidi_count_bits(endpoints[i].in_cables);
1732 }
1733 err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports);
1734 if (err < 0) {
1735 kfree(umidi);
1736 return err;
1737 }
1738
1739 /* create endpoint/port structures */
1740 if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN)
1741 err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]);
1742 else
1743 err = snd_usbmidi_create_endpoints(umidi, endpoints);
1744 if (err < 0) {
1745 snd_usbmidi_free(umidi);
1746 return err;
1747 }
1748
1749 list_add(&umidi->list, &umidi->chip->midi_list);
1750
1751 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1752 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
1753 return 0;
1754 }
1755
1756 EXPORT_SYMBOL(snd_usb_create_midi_interface);
1757 EXPORT_SYMBOL(snd_usbmidi_input_stop);
1758 EXPORT_SYMBOL(snd_usbmidi_input_start);
1759 EXPORT_SYMBOL(snd_usbmidi_disconnect);
kernel source for telekom puls (alcatel/mediatek)