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[ARM] 4810/1: - Fix 'section mismatch' building warnings
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / usb / usbmidi.c
blob750e929d5870504b39c1e0479a91af872c0cd539
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
108 struct snd_usb_midi_endpoint {
109 struct snd_usb_midi_out_endpoint *out;
110 struct snd_usb_midi_in_endpoint *in;
111 } endpoints[MIDI_MAX_ENDPOINTS];
112 unsigned long input_triggered;
113 };
114
115 struct snd_usb_midi_out_endpoint {
116 struct snd_usb_midi* umidi;
117 struct urb* urb;
118 int urb_active;
119 int max_transfer; /* size of urb buffer */
120 struct tasklet_struct tasklet;
121
122 spinlock_t buffer_lock;
123
124 struct usbmidi_out_port {
125 struct snd_usb_midi_out_endpoint* ep;
126 struct snd_rawmidi_substream *substream;
127 int active;
128 uint8_t cable; /* cable number << 4 */
129 uint8_t state;
130 #define STATE_UNKNOWN 0
131 #define STATE_1PARAM 1
132 #define STATE_2PARAM_1 2
133 #define STATE_2PARAM_2 3
134 #define STATE_SYSEX_0 4
135 #define STATE_SYSEX_1 5
136 #define STATE_SYSEX_2 6
137 uint8_t data[2];
138 } ports[0x10];
139 int current_port;
140 };
141
142 struct snd_usb_midi_in_endpoint {
143 struct snd_usb_midi* umidi;
144 struct urb* urb;
145 struct usbmidi_in_port {
146 struct snd_rawmidi_substream *substream;
147 u8 running_status_length;
148 } ports[0x10];
149 u8 seen_f5;
150 u8 error_resubmit;
151 int current_port;
152 };
153
154 static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep);
155
156 static const uint8_t snd_usbmidi_cin_length[] = {
157 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
158 };
159
160 /*
161 * Submits the URB, with error handling.
162 */
163 static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags)
164 {
165 int err = usb_submit_urb(urb, flags);
166 if (err < 0 && err != -ENODEV)
167 snd_printk(KERN_ERR "usb_submit_urb: %d\n", err);
168 return err;
169 }
170
171 /*
172 * Error handling for URB completion functions.
173 */
174 static int snd_usbmidi_urb_error(int status)
175 {
176 switch (status) {
177 /* manually unlinked, or device gone */
178 case -ENOENT:
179 case -ECONNRESET:
180 case -ESHUTDOWN:
181 case -ENODEV:
182 return -ENODEV;
183 /* errors that might occur during unplugging */
184 case -EPROTO:
185 case -ETIME:
186 case -EILSEQ:
187 return -EIO;
188 default:
189 snd_printk(KERN_ERR "urb status %d\n", status);
190 return 0; /* continue */
191 }
192 }
193
194 /*
195 * Receives a chunk of MIDI data.
196 */
197 static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx,
198 uint8_t* data, int length)
199 {
200 struct usbmidi_in_port* port = &ep->ports[portidx];
201
202 if (!port->substream) {
203 snd_printd("unexpected port %d!\n", portidx);
204 return;
205 }
206 if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
207 return;
208 snd_rawmidi_receive(port->substream, data, length);
209 }
210
211 #ifdef DUMP_PACKETS
212 static void dump_urb(const char *type, const u8 *data, int length)
213 {
214 snd_printk(KERN_DEBUG "%s packet: [", type);
215 for (; length > 0; ++data, --length)
216 printk(" %02x", *data);
217 printk(" ]\n");
218 }
219 #else
220 #define dump_urb(type, data, length) /* nothing */
221 #endif
222
223 /*
224 * Processes the data read from the device.
225 */
226 static void snd_usbmidi_in_urb_complete(struct urb* urb)
227 {
228 struct snd_usb_midi_in_endpoint* ep = urb->context;
229
230 if (urb->status == 0) {
231 dump_urb("received", urb->transfer_buffer, urb->actual_length);
232 ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
233 urb->actual_length);
234 } else {
235 int err = snd_usbmidi_urb_error(urb->status);
236 if (err < 0) {
237 if (err != -ENODEV) {
238 ep->error_resubmit = 1;
239 mod_timer(&ep->umidi->error_timer,
240 jiffies + ERROR_DELAY_JIFFIES);
241 }
242 return;
243 }
244 }
245
246 urb->dev = ep->umidi->chip->dev;
247 snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
248 }
249
250 static void snd_usbmidi_out_urb_complete(struct urb* urb)
251 {
252 struct snd_usb_midi_out_endpoint* ep = urb->context;
253
254 spin_lock(&ep->buffer_lock);
255 ep->urb_active = 0;
256 spin_unlock(&ep->buffer_lock);
257 if (urb->status < 0) {
258 int err = snd_usbmidi_urb_error(urb->status);
259 if (err < 0) {
260 if (err != -ENODEV)
261 mod_timer(&ep->umidi->error_timer,
262 jiffies + ERROR_DELAY_JIFFIES);
263 return;
264 }
265 }
266 snd_usbmidi_do_output(ep);
267 }
268
269 /*
270 * This is called when some data should be transferred to the device
271 * (from one or more substreams).
272 */
273 static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep)
274 {
275 struct urb* urb = ep->urb;
276 unsigned long flags;
277
278 spin_lock_irqsave(&ep->buffer_lock, flags);
279 if (ep->urb_active || ep->umidi->chip->shutdown) {
280 spin_unlock_irqrestore(&ep->buffer_lock, flags);
281 return;
282 }
283
284 urb->transfer_buffer_length = 0;
285 ep->umidi->usb_protocol_ops->output(ep);
286
287 if (urb->transfer_buffer_length > 0) {
288 dump_urb("sending", urb->transfer_buffer,
289 urb->transfer_buffer_length);
290 urb->dev = ep->umidi->chip->dev;
291 ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0;
292 }
293 spin_unlock_irqrestore(&ep->buffer_lock, flags);
294 }
295
296 static void snd_usbmidi_out_tasklet(unsigned long data)
297 {
298 struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data;
299
300 snd_usbmidi_do_output(ep);
301 }
302
303 /* called after transfers had been interrupted due to some USB error */
304 static void snd_usbmidi_error_timer(unsigned long data)
305 {
306 struct snd_usb_midi *umidi = (struct snd_usb_midi *)data;
307 int i;
308
309 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
310 struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
311 if (in && in->error_resubmit) {
312 in->error_resubmit = 0;
313 in->urb->dev = umidi->chip->dev;
314 snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC);
315 }
316 if (umidi->endpoints[i].out)
317 snd_usbmidi_do_output(umidi->endpoints[i].out);
318 }
319 }
320
321 /* helper function to send static data that may not DMA-able */
322 static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep,
323 const void *data, int len)
324 {
325 int err;
326 void *buf = kmemdup(data, len, GFP_KERNEL);
327 if (!buf)
328 return -ENOMEM;
329 dump_urb("sending", buf, len);
330 err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len,
331 NULL, 250);
332 kfree(buf);
333 return err;
334 }
335
336 /*
337 * Standard USB MIDI protocol: see the spec.
338 * Midiman protocol: like the standard protocol, but the control byte is the
339 * fourth byte in each packet, and uses length instead of CIN.
340 */
341
342 static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep,
343 uint8_t* buffer, int buffer_length)
344 {
345 int i;
346
347 for (i = 0; i + 3 < buffer_length; i += 4)
348 if (buffer[i] != 0) {
349 int cable = buffer[i] >> 4;
350 int length = snd_usbmidi_cin_length[buffer[i] & 0x0f];
351 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
352 }
353 }
354
355 static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep,
356 uint8_t* buffer, int buffer_length)
357 {
358 int i;
359
360 for (i = 0; i + 3 < buffer_length; i += 4)
361 if (buffer[i + 3] != 0) {
362 int port = buffer[i + 3] >> 4;
363 int length = buffer[i + 3] & 3;
364 snd_usbmidi_input_data(ep, port, &buffer[i], length);
365 }
366 }
367
368 /*
369 * Buggy M-Audio device: running status on input results in a packet that has
370 * the data bytes but not the status byte and that is marked with CIN 4.
371 */
372 static void snd_usbmidi_maudio_broken_running_status_input(
373 struct snd_usb_midi_in_endpoint* ep,
374 uint8_t* buffer, int buffer_length)
375 {
376 int i;
377
378 for (i = 0; i + 3 < buffer_length; i += 4)
379 if (buffer[i] != 0) {
380 int cable = buffer[i] >> 4;
381 u8 cin = buffer[i] & 0x0f;
382 struct usbmidi_in_port *port = &ep->ports[cable];
383 int length;
384
385 length = snd_usbmidi_cin_length[cin];
386 if (cin == 0xf && buffer[i + 1] >= 0xf8)
387 ; /* realtime msg: no running status change */
388 else if (cin >= 0x8 && cin <= 0xe)
389 /* channel msg */
390 port->running_status_length = length - 1;
391 else if (cin == 0x4 &&
392 port->running_status_length != 0 &&
393 buffer[i + 1] < 0x80)
394 /* CIN 4 that is not a SysEx */
395 length = port->running_status_length;
396 else
397 /*
398 * All other msgs cannot begin running status.
399 * (A channel msg sent as two or three CIN 0xF
400 * packets could in theory, but this device
401 * doesn't use this format.)
402 */
403 port->running_status_length = 0;
404 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
405 }
406 }
407
408 /*
409 * CME protocol: like the standard protocol, but SysEx commands are sent as a
410 * single USB packet preceded by a 0x0F byte.
411 */
412 static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
413 uint8_t *buffer, int buffer_length)
414 {
415 if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
416 snd_usbmidi_standard_input(ep, buffer, buffer_length);
417 else
418 snd_usbmidi_input_data(ep, buffer[0] >> 4,
419 &buffer[1], buffer_length - 1);
420 }
421
422 /*
423 * Adds one USB MIDI packet to the output buffer.
424 */
425 static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0,
426 uint8_t p1, uint8_t p2, uint8_t p3)
427 {
428
429 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
430 buf[0] = p0;
431 buf[1] = p1;
432 buf[2] = p2;
433 buf[3] = p3;
434 urb->transfer_buffer_length += 4;
435 }
436
437 /*
438 * Adds one Midiman packet to the output buffer.
439 */
440 static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0,
441 uint8_t p1, uint8_t p2, uint8_t p3)
442 {
443
444 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
445 buf[0] = p1;
446 buf[1] = p2;
447 buf[2] = p3;
448 buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f];
449 urb->transfer_buffer_length += 4;
450 }
451
452 /*
453 * Converts MIDI commands to USB MIDI packets.
454 */
455 static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port,
456 uint8_t b, struct urb* urb)
457 {
458 uint8_t p0 = port->cable;
459 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) =
460 port->ep->umidi->usb_protocol_ops->output_packet;
461
462 if (b >= 0xf8) {
463 output_packet(urb, p0 | 0x0f, b, 0, 0);
464 } else if (b >= 0xf0) {
465 switch (b) {
466 case 0xf0:
467 port->data[0] = b;
468 port->state = STATE_SYSEX_1;
469 break;
470 case 0xf1:
471 case 0xf3:
472 port->data[0] = b;
473 port->state = STATE_1PARAM;
474 break;
475 case 0xf2:
476 port->data[0] = b;
477 port->state = STATE_2PARAM_1;
478 break;
479 case 0xf4:
480 case 0xf5:
481 port->state = STATE_UNKNOWN;
482 break;
483 case 0xf6:
484 output_packet(urb, p0 | 0x05, 0xf6, 0, 0);
485 port->state = STATE_UNKNOWN;
486 break;
487 case 0xf7:
488 switch (port->state) {
489 case STATE_SYSEX_0:
490 output_packet(urb, p0 | 0x05, 0xf7, 0, 0);
491 break;
492 case STATE_SYSEX_1:
493 output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0);
494 break;
495 case STATE_SYSEX_2:
496 output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7);
497 break;
498 }
499 port->state = STATE_UNKNOWN;
500 break;
501 }
502 } else if (b >= 0x80) {
503 port->data[0] = b;
504 if (b >= 0xc0 && b <= 0xdf)
505 port->state = STATE_1PARAM;
506 else
507 port->state = STATE_2PARAM_1;
508 } else { /* b < 0x80 */
509 switch (port->state) {
510 case STATE_1PARAM:
511 if (port->data[0] < 0xf0) {
512 p0 |= port->data[0] >> 4;
513 } else {
514 p0 |= 0x02;
515 port->state = STATE_UNKNOWN;
516 }
517 output_packet(urb, p0, port->data[0], b, 0);
518 break;
519 case STATE_2PARAM_1:
520 port->data[1] = b;
521 port->state = STATE_2PARAM_2;
522 break;
523 case STATE_2PARAM_2:
524 if (port->data[0] < 0xf0) {
525 p0 |= port->data[0] >> 4;
526 port->state = STATE_2PARAM_1;
527 } else {
528 p0 |= 0x03;
529 port->state = STATE_UNKNOWN;
530 }
531 output_packet(urb, p0, port->data[0], port->data[1], b);
532 break;
533 case STATE_SYSEX_0:
534 port->data[0] = b;
535 port->state = STATE_SYSEX_1;
536 break;
537 case STATE_SYSEX_1:
538 port->data[1] = b;
539 port->state = STATE_SYSEX_2;
540 break;
541 case STATE_SYSEX_2:
542 output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b);
543 port->state = STATE_SYSEX_0;
544 break;
545 }
546 }
547 }
548
549 static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep)
550 {
551 struct urb* urb = ep->urb;
552 int p;
553
554 /* FIXME: lower-numbered ports can starve higher-numbered ports */
555 for (p = 0; p < 0x10; ++p) {
556 struct usbmidi_out_port* port = &ep->ports[p];
557 if (!port->active)
558 continue;
559 while (urb->transfer_buffer_length + 3 < ep->max_transfer) {
560 uint8_t b;
561 if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) {
562 port->active = 0;
563 break;
564 }
565 snd_usbmidi_transmit_byte(port, b, urb);
566 }
567 }
568 }
569
570 static struct usb_protocol_ops snd_usbmidi_standard_ops = {
571 .input = snd_usbmidi_standard_input,
572 .output = snd_usbmidi_standard_output,
573 .output_packet = snd_usbmidi_output_standard_packet,
574 };
575
576 static struct usb_protocol_ops snd_usbmidi_midiman_ops = {
577 .input = snd_usbmidi_midiman_input,
578 .output = snd_usbmidi_standard_output,
579 .output_packet = snd_usbmidi_output_midiman_packet,
580 };
581
582 static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = {
583 .input = snd_usbmidi_maudio_broken_running_status_input,
584 .output = snd_usbmidi_standard_output,
585 .output_packet = snd_usbmidi_output_standard_packet,
586 };
587
588 static struct usb_protocol_ops snd_usbmidi_cme_ops = {
589 .input = snd_usbmidi_cme_input,
590 .output = snd_usbmidi_standard_output,
591 .output_packet = snd_usbmidi_output_standard_packet,
592 };
593
594 /*
595 * Novation USB MIDI protocol: number of data bytes is in the first byte
596 * (when receiving) (+1!) or in the second byte (when sending); data begins
597 * at the third byte.
598 */
599
600 static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep,
601 uint8_t* buffer, int buffer_length)
602 {
603 if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
604 return;
605 snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
606 }
607
608 static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep)
609 {
610 uint8_t* transfer_buffer;
611 int count;
612
613 if (!ep->ports[0].active)
614 return;
615 transfer_buffer = ep->urb->transfer_buffer;
616 count = snd_rawmidi_transmit(ep->ports[0].substream,
617 &transfer_buffer[2],
618 ep->max_transfer - 2);
619 if (count < 1) {
620 ep->ports[0].active = 0;
621 return;
622 }
623 transfer_buffer[0] = 0;
624 transfer_buffer[1] = count;
625 ep->urb->transfer_buffer_length = 2 + count;
626 }
627
628 static struct usb_protocol_ops snd_usbmidi_novation_ops = {
629 .input = snd_usbmidi_novation_input,
630 .output = snd_usbmidi_novation_output,
631 };
632
633 /*
634 * "raw" protocol: used by the MOTU FastLane.
635 */
636
637 static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
638 uint8_t* buffer, int buffer_length)
639 {
640 snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
641 }
642
643 static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep)
644 {
645 int count;
646
647 if (!ep->ports[0].active)
648 return;
649 count = snd_rawmidi_transmit(ep->ports[0].substream,
650 ep->urb->transfer_buffer,
651 ep->max_transfer);
652 if (count < 1) {
653 ep->ports[0].active = 0;
654 return;
655 }
656 ep->urb->transfer_buffer_length = count;
657 }
658
659 static struct usb_protocol_ops snd_usbmidi_raw_ops = {
660 .input = snd_usbmidi_raw_input,
661 .output = snd_usbmidi_raw_output,
662 };
663
664 /*
665 * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
666 */
667
668 static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep)
669 {
670 static const u8 init_data[] = {
671 /* initialization magic: "get version" */
672 0xf0,
673 0x00, 0x20, 0x31, /* Emagic */
674 0x64, /* Unitor8 */
675 0x0b, /* version number request */
676 0x00, /* command version */
677 0x00, /* EEPROM, box 0 */
678 0xf7
679 };
680 send_bulk_static_data(ep, init_data, sizeof(init_data));
681 /* while we're at it, pour on more magic */
682 send_bulk_static_data(ep, init_data, sizeof(init_data));
683 }
684
685 static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep)
686 {
687 static const u8 finish_data[] = {
688 /* switch to patch mode with last preset */
689 0xf0,
690 0x00, 0x20, 0x31, /* Emagic */
691 0x64, /* Unitor8 */
692 0x10, /* patch switch command */
693 0x00, /* command version */
694 0x7f, /* to all boxes */
695 0x40, /* last preset in EEPROM */
696 0xf7
697 };
698 send_bulk_static_data(ep, finish_data, sizeof(finish_data));
699 }
700
701 static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep,
702 uint8_t* buffer, int buffer_length)
703 {
704 int i;
705
706 /* FF indicates end of valid data */
707 for (i = 0; i < buffer_length; ++i)
708 if (buffer[i] == 0xff) {
709 buffer_length = i;
710 break;
711 }
712
713 /* handle F5 at end of last buffer */
714 if (ep->seen_f5)
715 goto switch_port;
716
717 while (buffer_length > 0) {
718 /* determine size of data until next F5 */
719 for (i = 0; i < buffer_length; ++i)
720 if (buffer[i] == 0xf5)
721 break;
722 snd_usbmidi_input_data(ep, ep->current_port, buffer, i);
723 buffer += i;
724 buffer_length -= i;
725
726 if (buffer_length <= 0)
727 break;
728 /* assert(buffer[0] == 0xf5); */
729 ep->seen_f5 = 1;
730 ++buffer;
731 --buffer_length;
732
733 switch_port:
734 if (buffer_length <= 0)
735 break;
736 if (buffer[0] < 0x80) {
737 ep->current_port = (buffer[0] - 1) & 15;
738 ++buffer;
739 --buffer_length;
740 }
741 ep->seen_f5 = 0;
742 }
743 }
744
745 static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep)
746 {
747 int port0 = ep->current_port;
748 uint8_t* buf = ep->urb->transfer_buffer;
749 int buf_free = ep->max_transfer;
750 int length, i;
751
752 for (i = 0; i < 0x10; ++i) {
753 /* round-robin, starting at the last current port */
754 int portnum = (port0 + i) & 15;
755 struct usbmidi_out_port* port = &ep->ports[portnum];
756
757 if (!port->active)
758 continue;
759 if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) {
760 port->active = 0;
761 continue;
762 }
763
764 if (portnum != ep->current_port) {
765 if (buf_free < 2)
766 break;
767 ep->current_port = portnum;
768 buf[0] = 0xf5;
769 buf[1] = (portnum + 1) & 15;
770 buf += 2;
771 buf_free -= 2;
772 }
773
774 if (buf_free < 1)
775 break;
776 length = snd_rawmidi_transmit(port->substream, buf, buf_free);
777 if (length > 0) {
778 buf += length;
779 buf_free -= length;
780 if (buf_free < 1)
781 break;
782 }
783 }
784 if (buf_free < ep->max_transfer && buf_free > 0) {
785 *buf = 0xff;
786 --buf_free;
787 }
788 ep->urb->transfer_buffer_length = ep->max_transfer - buf_free;
789 }
790
791 static struct usb_protocol_ops snd_usbmidi_emagic_ops = {
792 .input = snd_usbmidi_emagic_input,
793 .output = snd_usbmidi_emagic_output,
794 .init_out_endpoint = snd_usbmidi_emagic_init_out,
795 .finish_out_endpoint = snd_usbmidi_emagic_finish_out,
796 };
797
798
799 static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
800 {
801 struct snd_usb_midi* umidi = substream->rmidi->private_data;
802 struct usbmidi_out_port* port = NULL;
803 int i, j;
804
805 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
806 if (umidi->endpoints[i].out)
807 for (j = 0; j < 0x10; ++j)
808 if (umidi->endpoints[i].out->ports[j].substream == substream) {
809 port = &umidi->endpoints[i].out->ports[j];
810 break;
811 }
812 if (!port) {
813 snd_BUG();
814 return -ENXIO;
815 }
816 substream->runtime->private_data = port;
817 port->state = STATE_UNKNOWN;
818 return 0;
819 }
820
821 static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
822 {
823 return 0;
824 }
825
826 static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)
827 {
828 struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data;
829
830 port->active = up;
831 if (up) {
832 if (port->ep->umidi->chip->shutdown) {
833 /* gobble up remaining bytes to prevent wait in
834 * snd_rawmidi_drain_output */
835 while (!snd_rawmidi_transmit_empty(substream))
836 snd_rawmidi_transmit_ack(substream, 1);
837 return;
838 }
839 tasklet_hi_schedule(&port->ep->tasklet);
840 }
841 }
842
843 static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
844 {
845 return 0;
846 }
847
848 static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream)
849 {
850 return 0;
851 }
852
853 static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
854 {
855 struct snd_usb_midi* umidi = substream->rmidi->private_data;
856
857 if (up)
858 set_bit(substream->number, &umidi->input_triggered);
859 else
860 clear_bit(substream->number, &umidi->input_triggered);
861 }
862
863 static struct snd_rawmidi_ops snd_usbmidi_output_ops = {
864 .open = snd_usbmidi_output_open,
865 .close = snd_usbmidi_output_close,
866 .trigger = snd_usbmidi_output_trigger,
867 };
868
869 static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
870 .open = snd_usbmidi_input_open,
871 .close = snd_usbmidi_input_close,
872 .trigger = snd_usbmidi_input_trigger
873 };
874
875 /*
876 * Frees an input endpoint.
877 * May be called when ep hasn't been initialized completely.
878 */
879 static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep)
880 {
881 if (ep->urb) {
882 usb_buffer_free(ep->umidi->chip->dev,
883 ep->urb->transfer_buffer_length,
884 ep->urb->transfer_buffer,
885 ep->urb->transfer_dma);
886 usb_free_urb(ep->urb);
887 }
888 kfree(ep);
889 }
890
891 /*
892 * Creates an input endpoint.
893 */
894 static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
895 struct snd_usb_midi_endpoint_info* ep_info,
896 struct snd_usb_midi_endpoint* rep)
897 {
898 struct snd_usb_midi_in_endpoint* ep;
899 void* buffer;
900 unsigned int pipe;
901 int length;
902
903 rep->in = NULL;
904 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
905 if (!ep)
906 return -ENOMEM;
907 ep->umidi = umidi;
908
909 ep->urb = usb_alloc_urb(0, GFP_KERNEL);
910 if (!ep->urb) {
911 snd_usbmidi_in_endpoint_delete(ep);
912 return -ENOMEM;
913 }
914 if (ep_info->in_interval)
915 pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep);
916 else
917 pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep);
918 length = usb_maxpacket(umidi->chip->dev, pipe, 0);
919 buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL,
920 &ep->urb->transfer_dma);
921 if (!buffer) {
922 snd_usbmidi_in_endpoint_delete(ep);
923 return -ENOMEM;
924 }
925 if (ep_info->in_interval)
926 usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
927 length, snd_usbmidi_in_urb_complete, ep,
928 ep_info->in_interval);
929 else
930 usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer,
931 length, snd_usbmidi_in_urb_complete, ep);
932 ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
933
934 rep->in = ep;
935 return 0;
936 }
937
938 static unsigned int snd_usbmidi_count_bits(unsigned int x)
939 {
940 unsigned int bits;
941
942 for (bits = 0; x; ++bits)
943 x &= x - 1;
944 return bits;
945 }
946
947 /*
948 * Frees an output endpoint.
949 * May be called when ep hasn't been initialized completely.
950 */
951 static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint* ep)
952 {
953 if (ep->urb) {
954 usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer,
955 ep->urb->transfer_buffer,
956 ep->urb->transfer_dma);
957 usb_free_urb(ep->urb);
958 }
959 kfree(ep);
960 }
961
962 /*
963 * Creates an output endpoint, and initializes output ports.
964 */
965 static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
966 struct snd_usb_midi_endpoint_info* ep_info,
967 struct snd_usb_midi_endpoint* rep)
968 {
969 struct snd_usb_midi_out_endpoint* ep;
970 int i;
971 unsigned int pipe;
972 void* buffer;
973
974 rep->out = NULL;
975 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
976 if (!ep)
977 return -ENOMEM;
978 ep->umidi = umidi;
979
980 ep->urb = usb_alloc_urb(0, GFP_KERNEL);
981 if (!ep->urb) {
982 snd_usbmidi_out_endpoint_delete(ep);
983 return -ENOMEM;
984 }
985 if (ep_info->out_interval)
986 pipe = usb_sndintpipe(umidi->chip->dev, ep_info->out_ep);
987 else
988 pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep);
989 if (umidi->chip->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */
990 /* FIXME: we need more URBs to get reasonable bandwidth here: */
991 ep->max_transfer = 4;
992 else
993 ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1);
994 buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer,
995 GFP_KERNEL, &ep->urb->transfer_dma);
996 if (!buffer) {
997 snd_usbmidi_out_endpoint_delete(ep);
998 return -ENOMEM;
999 }
1000 if (ep_info->out_interval)
1001 usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer,
1002 ep->max_transfer, snd_usbmidi_out_urb_complete,
1003 ep, ep_info->out_interval);
1004 else
1005 usb_fill_bulk_urb(ep->urb, umidi->chip->dev,
1006 pipe, buffer, ep->max_transfer,
1007 snd_usbmidi_out_urb_complete, ep);
1008 ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1009
1010 spin_lock_init(&ep->buffer_lock);
1011 tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
1012
1013 for (i = 0; i < 0x10; ++i)
1014 if (ep_info->out_cables & (1 << i)) {
1015 ep->ports[i].ep = ep;
1016 ep->ports[i].cable = i << 4;
1017 }
1018
1019 if (umidi->usb_protocol_ops->init_out_endpoint)
1020 umidi->usb_protocol_ops->init_out_endpoint(ep);
1021
1022 rep->out = ep;
1023 return 0;
1024 }
1025
1026 /*
1027 * Frees everything.
1028 */
1029 static void snd_usbmidi_free(struct snd_usb_midi* umidi)
1030 {
1031 int i;
1032
1033 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1034 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1035 if (ep->out)
1036 snd_usbmidi_out_endpoint_delete(ep->out);
1037 if (ep->in)
1038 snd_usbmidi_in_endpoint_delete(ep->in);
1039 }
1040 kfree(umidi);
1041 }
1042
1043 /*
1044 * Unlinks all URBs (must be done before the usb_device is deleted).
1045 */
1046 void snd_usbmidi_disconnect(struct list_head* p)
1047 {
1048 struct snd_usb_midi* umidi;
1049 int i;
1050
1051 umidi = list_entry(p, struct snd_usb_midi, list);
1052 del_timer_sync(&umidi->error_timer);
1053 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1054 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1055 if (ep->out)
1056 tasklet_kill(&ep->out->tasklet);
1057 if (ep->out && ep->out->urb) {
1058 usb_kill_urb(ep->out->urb);
1059 if (umidi->usb_protocol_ops->finish_out_endpoint)
1060 umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
1061 }
1062 if (ep->in)
1063 usb_kill_urb(ep->in->urb);
1064 }
1065 }
1066
1067 static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi)
1068 {
1069 struct snd_usb_midi* umidi = rmidi->private_data;
1070 snd_usbmidi_free(umidi);
1071 }
1072
1073 static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi,
1074 int stream, int number)
1075 {
1076 struct list_head* list;
1077
1078 list_for_each(list, &umidi->rmidi->streams[stream].substreams) {
1079 struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list);
1080 if (substream->number == number)
1081 return substream;
1082 }
1083 return NULL;
1084 }
1085
1086 /*
1087 * This list specifies names for ports that do not fit into the standard
1088 * "(product) MIDI (n)" schema because they aren't external MIDI ports,
1089 * such as internal control or synthesizer ports.
1090 */
1091 static struct port_info {
1092 u32 id;
1093 short int port;
1094 short int voices;
1095 const char *name;
1096 unsigned int seq_flags;
1097 } snd_usbmidi_port_info[] = {
1098 #define PORT_INFO(vendor, product, num, name_, voices_, flags) \
1099 { .id = USB_ID(vendor, product), \
1100 .port = num, .voices = voices_, \
1101 .name = name_, .seq_flags = flags }
1102 #define EXTERNAL_PORT(vendor, product, num, name) \
1103 PORT_INFO(vendor, product, num, name, 0, \
1104 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1105 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1106 SNDRV_SEQ_PORT_TYPE_PORT)
1107 #define CONTROL_PORT(vendor, product, num, name) \
1108 PORT_INFO(vendor, product, num, name, 0, \
1109 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1110 SNDRV_SEQ_PORT_TYPE_HARDWARE)
1111 #define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \
1112 PORT_INFO(vendor, product, num, name, voices, \
1113 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1114 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1115 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1116 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1117 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1118 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1119 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1120 #define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \
1121 PORT_INFO(vendor, product, num, name, voices, \
1122 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1123 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1124 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1125 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1126 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1127 SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \
1128 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1129 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1130 /* Roland UA-100 */
1131 CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"),
1132 /* Roland SC-8850 */
1133 SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128),
1134 SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128),
1135 SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128),
1136 SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128),
1137 EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"),
1138 EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"),
1139 /* Roland U-8 */
1140 EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"),
1141 CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"),
1142 /* Roland SC-8820 */
1143 SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64),
1144 SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64),
1145 EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"),
1146 /* Roland SK-500 */
1147 SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64),
1148 SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64),
1149 EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"),
1150 /* Roland SC-D70 */
1151 SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64),
1152 SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64),
1153 EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"),
1154 /* Edirol UM-880 */
1155 CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"),
1156 /* Edirol SD-90 */
1157 ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128),
1158 ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128),
1159 EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"),
1160 EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"),
1161 /* Edirol UM-550 */
1162 CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"),
1163 /* Edirol SD-20 */
1164 ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64),
1165 ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64),
1166 EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"),
1167 /* Edirol SD-80 */
1168 ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128),
1169 ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128),
1170 EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"),
1171 EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"),
1172 /* Edirol UA-700 */
1173 EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"),
1174 CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"),
1175 /* Roland VariOS */
1176 EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"),
1177 EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"),
1178 EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"),
1179 /* Edirol PCR */
1180 EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"),
1181 EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"),
1182 EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"),
1183 /* BOSS GS-10 */
1184 EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"),
1185 CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"),
1186 /* Edirol UA-1000 */
1187 EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"),
1188 CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"),
1189 /* Edirol UR-80 */
1190 EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"),
1191 EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"),
1192 EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"),
1193 /* Edirol PCR-A */
1194 EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"),
1195 EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"),
1196 EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"),
1197 /* Edirol UM-3EX */
1198 CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"),
1199 /* M-Audio MidiSport 8x8 */
1200 CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"),
1201 CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"),
1202 /* MOTU Fastlane */
1203 EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"),
1204 EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"),
1205 /* Emagic Unitor8/AMT8/MT4 */
1206 EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
1207 EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
1208 EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
1209 };
1210
1211 static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number)
1212 {
1213 int i;
1214
1215 for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) {
1216 if (snd_usbmidi_port_info[i].id == umidi->chip->usb_id &&
1217 snd_usbmidi_port_info[i].port == number)
1218 return &snd_usbmidi_port_info[i];
1219 }
1220 return NULL;
1221 }
1222
1223 static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number,
1224 struct snd_seq_port_info *seq_port_info)
1225 {
1226 struct snd_usb_midi *umidi = rmidi->private_data;
1227 struct port_info *port_info;
1228
1229 /* TODO: read port flags from descriptors */
1230 port_info = find_port_info(umidi, number);
1231 if (port_info) {
1232 seq_port_info->type = port_info->seq_flags;
1233 seq_port_info->midi_voices = port_info->voices;
1234 }
1235 }
1236
1237 static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi,
1238 int stream, int number,
1239 struct snd_rawmidi_substream ** rsubstream)
1240 {
1241 struct port_info *port_info;
1242 const char *name_format;
1243
1244 struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number);
1245 if (!substream) {
1246 snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number);
1247 return;
1248 }
1249
1250 /* TODO: read port name from jack descriptor */
1251 port_info = find_port_info(umidi, number);
1252 name_format = port_info ? port_info->name : "%s MIDI %d";
1253 snprintf(substream->name, sizeof(substream->name),
1254 name_format, umidi->chip->card->shortname, number + 1);
1255
1256 *rsubstream = substream;
1257 }
1258
1259 /*
1260 * Creates the endpoints and their ports.
1261 */
1262 static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi,
1263 struct snd_usb_midi_endpoint_info* endpoints)
1264 {
1265 int i, j, err;
1266 int out_ports = 0, in_ports = 0;
1267
1268 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1269 if (endpoints[i].out_cables) {
1270 err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i],
1271 &umidi->endpoints[i]);
1272 if (err < 0)
1273 return err;
1274 }
1275 if (endpoints[i].in_cables) {
1276 err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i],
1277 &umidi->endpoints[i]);
1278 if (err < 0)
1279 return err;
1280 }
1281
1282 for (j = 0; j < 0x10; ++j) {
1283 if (endpoints[i].out_cables & (1 << j)) {
1284 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports,
1285 &umidi->endpoints[i].out->ports[j].substream);
1286 ++out_ports;
1287 }
1288 if (endpoints[i].in_cables & (1 << j)) {
1289 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports,
1290 &umidi->endpoints[i].in->ports[j].substream);
1291 ++in_ports;
1292 }
1293 }
1294 }
1295 snd_printdd(KERN_INFO "created %d output and %d input ports\n",
1296 out_ports, in_ports);
1297 return 0;
1298 }
1299
1300 /*
1301 * Returns MIDIStreaming device capabilities.
1302 */
1303 static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
1304 struct snd_usb_midi_endpoint_info* endpoints)
1305 {
1306 struct usb_interface* intf;
1307 struct usb_host_interface *hostif;
1308 struct usb_interface_descriptor* intfd;
1309 struct usb_ms_header_descriptor* ms_header;
1310 struct usb_host_endpoint *hostep;
1311 struct usb_endpoint_descriptor* ep;
1312 struct usb_ms_endpoint_descriptor* ms_ep;
1313 int i, epidx;
1314
1315 intf = umidi->iface;
1316 if (!intf)
1317 return -ENXIO;
1318 hostif = &intf->altsetting[0];
1319 intfd = get_iface_desc(hostif);
1320 ms_header = (struct usb_ms_header_descriptor*)hostif->extra;
1321 if (hostif->extralen >= 7 &&
1322 ms_header->bLength >= 7 &&
1323 ms_header->bDescriptorType == USB_DT_CS_INTERFACE &&
1324 ms_header->bDescriptorSubtype == HEADER)
1325 snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n",
1326 ms_header->bcdMSC[1], ms_header->bcdMSC[0]);
1327 else
1328 snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n");
1329
1330 epidx = 0;
1331 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1332 hostep = &hostif->endpoint[i];
1333 ep = get_ep_desc(hostep);
1334 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
1335 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1336 continue;
1337 ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
1338 if (hostep->extralen < 4 ||
1339 ms_ep->bLength < 4 ||
1340 ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
1341 ms_ep->bDescriptorSubtype != MS_GENERAL)
1342 continue;
1343 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1344 if (endpoints[epidx].out_ep) {
1345 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1346 snd_printk(KERN_WARNING "too many endpoints\n");
1347 break;
1348 }
1349 }
1350 endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1351 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1352 endpoints[epidx].out_interval = ep->bInterval;
1353 else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW)
1354 /*
1355 * Low speed bulk transfers don't exist, so
1356 * force interrupt transfers for devices like
1357 * ESI MIDI Mate that try to use them anyway.
1358 */
1359 endpoints[epidx].out_interval = 1;
1360 endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1361 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1362 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1363 } else {
1364 if (endpoints[epidx].in_ep) {
1365 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1366 snd_printk(KERN_WARNING "too many endpoints\n");
1367 break;
1368 }
1369 }
1370 endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1371 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1372 endpoints[epidx].in_interval = ep->bInterval;
1373 else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW)
1374 endpoints[epidx].in_interval = 1;
1375 endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1376 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1377 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1378 }
1379 }
1380 return 0;
1381 }
1382
1383 /*
1384 * On Roland devices, use the second alternate setting to be able to use
1385 * the interrupt input endpoint.
1386 */
1387 static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi)
1388 {
1389 struct usb_interface* intf;
1390 struct usb_host_interface *hostif;
1391 struct usb_interface_descriptor* intfd;
1392
1393 intf = umidi->iface;
1394 if (!intf || intf->num_altsetting != 2)
1395 return;
1396
1397 hostif = &intf->altsetting[1];
1398 intfd = get_iface_desc(hostif);
1399 if (intfd->bNumEndpoints != 2 ||
1400 (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ||
1401 (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1402 return;
1403
1404 snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n",
1405 intfd->bAlternateSetting);
1406 usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber,
1407 intfd->bAlternateSetting);
1408 }
1409
1410 /*
1411 * Try to find any usable endpoints in the interface.
1412 */
1413 static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi,
1414 struct snd_usb_midi_endpoint_info* endpoint,
1415 int max_endpoints)
1416 {
1417 struct usb_interface* intf;
1418 struct usb_host_interface *hostif;
1419 struct usb_interface_descriptor* intfd;
1420 struct usb_endpoint_descriptor* epd;
1421 int i, out_eps = 0, in_eps = 0;
1422
1423 if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582)
1424 snd_usbmidi_switch_roland_altsetting(umidi);
1425
1426 if (endpoint[0].out_ep || endpoint[0].in_ep)
1427 return 0;
1428
1429 intf = umidi->iface;
1430 if (!intf || intf->num_altsetting < 1)
1431 return -ENOENT;
1432 hostif = intf->cur_altsetting;
1433 intfd = get_iface_desc(hostif);
1434
1435 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1436 epd = get_endpoint(hostif, i);
1437 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
1438 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1439 continue;
1440 if (out_eps < max_endpoints &&
1441 (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1442 endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1443 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1444 endpoint[out_eps].out_interval = epd->bInterval;
1445 ++out_eps;
1446 }
1447 if (in_eps < max_endpoints &&
1448 (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
1449 endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1450 if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
1451 endpoint[in_eps].in_interval = epd->bInterval;
1452 ++in_eps;
1453 }
1454 }
1455 return (out_eps || in_eps) ? 0 : -ENOENT;
1456 }
1457
1458 /*
1459 * Detects the endpoints for one-port-per-endpoint protocols.
1460 */
1461 static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi,
1462 struct snd_usb_midi_endpoint_info* endpoints)
1463 {
1464 int err, i;
1465
1466 err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS);
1467 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1468 if (endpoints[i].out_ep)
1469 endpoints[i].out_cables = 0x0001;
1470 if (endpoints[i].in_ep)
1471 endpoints[i].in_cables = 0x0001;
1472 }
1473 return err;
1474 }
1475
1476 /*
1477 * Detects the endpoints and ports of Yamaha devices.
1478 */
1479 static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi,
1480 struct snd_usb_midi_endpoint_info* endpoint)
1481 {
1482 struct usb_interface* intf;
1483 struct usb_host_interface *hostif;
1484 struct usb_interface_descriptor* intfd;
1485 uint8_t* cs_desc;
1486
1487 intf = umidi->iface;
1488 if (!intf)
1489 return -ENOENT;
1490 hostif = intf->altsetting;
1491 intfd = get_iface_desc(hostif);
1492 if (intfd->bNumEndpoints < 1)
1493 return -ENOENT;
1494
1495 /*
1496 * For each port there is one MIDI_IN/OUT_JACK descriptor, not
1497 * necessarily with any useful contents. So simply count 'em.
1498 */
1499 for (cs_desc = hostif->extra;
1500 cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
1501 cs_desc += cs_desc[0]) {
1502 if (cs_desc[1] == USB_DT_CS_INTERFACE) {
1503 if (cs_desc[2] == MIDI_IN_JACK)
1504 endpoint->in_cables = (endpoint->in_cables << 1) | 1;
1505 else if (cs_desc[2] == MIDI_OUT_JACK)
1506 endpoint->out_cables = (endpoint->out_cables << 1) | 1;
1507 }
1508 }
1509 if (!endpoint->in_cables && !endpoint->out_cables)
1510 return -ENOENT;
1511
1512 return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
1513 }
1514
1515 /*
1516 * Creates the endpoints and their ports for Midiman devices.
1517 */
1518 static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi,
1519 struct snd_usb_midi_endpoint_info* endpoint)
1520 {
1521 struct snd_usb_midi_endpoint_info ep_info;
1522 struct usb_interface* intf;
1523 struct usb_host_interface *hostif;
1524 struct usb_interface_descriptor* intfd;
1525 struct usb_endpoint_descriptor* epd;
1526 int cable, err;
1527
1528 intf = umidi->iface;
1529 if (!intf)
1530 return -ENOENT;
1531 hostif = intf->altsetting;
1532 intfd = get_iface_desc(hostif);
1533 /*
1534 * The various MidiSport devices have more or less random endpoint
1535 * numbers, so we have to identify the endpoints by their index in
1536 * the descriptor array, like the driver for that other OS does.
1537 *
1538 * There is one interrupt input endpoint for all input ports, one
1539 * bulk output endpoint for even-numbered ports, and one for odd-
1540 * numbered ports. Both bulk output endpoints have corresponding
1541 * input bulk endpoints (at indices 1 and 3) which aren't used.
1542 */
1543 if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) {
1544 snd_printdd(KERN_ERR "not enough endpoints\n");
1545 return -ENOENT;
1546 }
1547
1548 epd = get_endpoint(hostif, 0);
1549 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1550 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) {
1551 snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n");
1552 return -ENXIO;
1553 }
1554 epd = get_endpoint(hostif, 2);
1555 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
1556 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
1557 snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n");
1558 return -ENXIO;
1559 }
1560 if (endpoint->out_cables > 0x0001) {
1561 epd = get_endpoint(hostif, 4);
1562 if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT ||
1563 (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
1564 snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n");
1565 return -ENXIO;
1566 }
1567 }
1568
1569 ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1570 ep_info.out_cables = endpoint->out_cables & 0x5555;
1571 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
1572 if (err < 0)
1573 return err;
1574
1575 ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1576 ep_info.in_interval = get_endpoint(hostif, 0)->bInterval;
1577 ep_info.in_cables = endpoint->in_cables;
1578 err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
1579 if (err < 0)
1580 return err;
1581
1582 if (endpoint->out_cables > 0x0001) {
1583 ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1584 ep_info.out_cables = endpoint->out_cables & 0xaaaa;
1585 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]);
1586 if (err < 0)
1587 return err;
1588 }
1589
1590 for (cable = 0; cable < 0x10; ++cable) {
1591 if (endpoint->out_cables & (1 << cable))
1592 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable,
1593 &umidi->endpoints[cable & 1].out->ports[cable].substream);
1594 if (endpoint->in_cables & (1 << cable))
1595 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable,
1596 &umidi->endpoints[0].in->ports[cable].substream);
1597 }
1598 return 0;
1599 }
1600
1601 static struct snd_rawmidi_global_ops snd_usbmidi_ops = {
1602 .get_port_info = snd_usbmidi_get_port_info,
1603 };
1604
1605 static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi,
1606 int out_ports, int in_ports)
1607 {
1608 struct snd_rawmidi *rmidi;
1609 int err;
1610
1611 err = snd_rawmidi_new(umidi->chip->card, "USB MIDI",
1612 umidi->chip->next_midi_device++,
1613 out_ports, in_ports, &rmidi);
1614 if (err < 0)
1615 return err;
1616 strcpy(rmidi->name, umidi->chip->card->shortname);
1617 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
1618 SNDRV_RAWMIDI_INFO_INPUT |
1619 SNDRV_RAWMIDI_INFO_DUPLEX;
1620 rmidi->ops = &snd_usbmidi_ops;
1621 rmidi->private_data = umidi;
1622 rmidi->private_free = snd_usbmidi_rawmidi_free;
1623 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops);
1624 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops);
1625
1626 umidi->rmidi = rmidi;
1627 return 0;
1628 }
1629
1630 /*
1631 * Temporarily stop input.
1632 */
1633 void snd_usbmidi_input_stop(struct list_head* p)
1634 {
1635 struct snd_usb_midi* umidi;
1636 int i;
1637
1638 umidi = list_entry(p, struct snd_usb_midi, list);
1639 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1640 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1641 if (ep->in)
1642 usb_kill_urb(ep->in->urb);
1643 }
1644 }
1645
1646 static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep)
1647 {
1648 if (ep) {
1649 struct urb* urb = ep->urb;
1650 urb->dev = ep->umidi->chip->dev;
1651 snd_usbmidi_submit_urb(urb, GFP_KERNEL);
1652 }
1653 }
1654
1655 /*
1656 * Resume input after a call to snd_usbmidi_input_stop().
1657 */
1658 void snd_usbmidi_input_start(struct list_head* p)
1659 {
1660 struct snd_usb_midi* umidi;
1661 int i;
1662
1663 umidi = list_entry(p, struct snd_usb_midi, list);
1664 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1665 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
1666 }
1667
1668 /*
1669 * Creates and registers everything needed for a MIDI streaming interface.
1670 */
1671 int snd_usb_create_midi_interface(struct snd_usb_audio* chip,
1672 struct usb_interface* iface,
1673 const struct snd_usb_audio_quirk* quirk)
1674 {
1675 struct snd_usb_midi* umidi;
1676 struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS];
1677 int out_ports, in_ports;
1678 int i, err;
1679
1680 umidi = kzalloc(sizeof(*umidi), GFP_KERNEL);
1681 if (!umidi)
1682 return -ENOMEM;
1683 umidi->chip = chip;
1684 umidi->iface = iface;
1685 umidi->quirk = quirk;
1686 umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
1687 init_timer(&umidi->error_timer);
1688 umidi->error_timer.function = snd_usbmidi_error_timer;
1689 umidi->error_timer.data = (unsigned long)umidi;
1690
1691 /* detect the endpoint(s) to use */
1692 memset(endpoints, 0, sizeof(endpoints));
1693 switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) {
1694 case QUIRK_MIDI_STANDARD_INTERFACE:
1695 err = snd_usbmidi_get_ms_info(umidi, endpoints);
1696 if (chip->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */
1697 umidi->usb_protocol_ops =
1698 &snd_usbmidi_maudio_broken_running_status_ops;
1699 break;
1700 case QUIRK_MIDI_FIXED_ENDPOINT:
1701 memcpy(&endpoints[0], quirk->data,
1702 sizeof(struct snd_usb_midi_endpoint_info));
1703 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
1704 break;
1705 case QUIRK_MIDI_YAMAHA:
1706 err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]);
1707 break;
1708 case QUIRK_MIDI_MIDIMAN:
1709 umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
1710 memcpy(&endpoints[0], quirk->data,
1711 sizeof(struct snd_usb_midi_endpoint_info));
1712 err = 0;
1713 break;
1714 case QUIRK_MIDI_NOVATION:
1715 umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
1716 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1717 break;
1718 case QUIRK_MIDI_RAW:
1719 umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
1720 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1721 break;
1722 case QUIRK_MIDI_EMAGIC:
1723 umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops;
1724 memcpy(&endpoints[0], quirk->data,
1725 sizeof(struct snd_usb_midi_endpoint_info));
1726 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
1727 break;
1728 case QUIRK_MIDI_CME:
1729 umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
1730 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
1731 break;
1732 default:
1733 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
1734 err = -ENXIO;
1735 break;
1736 }
1737 if (err < 0) {
1738 kfree(umidi);
1739 return err;
1740 }
1741
1742 /* create rawmidi device */
1743 out_ports = 0;
1744 in_ports = 0;
1745 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1746 out_ports += snd_usbmidi_count_bits(endpoints[i].out_cables);
1747 in_ports += snd_usbmidi_count_bits(endpoints[i].in_cables);
1748 }
1749 err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports);
1750 if (err < 0) {
1751 kfree(umidi);
1752 return err;
1753 }
1754
1755 /* create endpoint/port structures */
1756 if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN)
1757 err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]);
1758 else
1759 err = snd_usbmidi_create_endpoints(umidi, endpoints);
1760 if (err < 0) {
1761 snd_usbmidi_free(umidi);
1762 return err;
1763 }
1764
1765 list_add(&umidi->list, &umidi->chip->midi_list);
1766
1767 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1768 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
1769 return 0;
1770 }
1771
1772 EXPORT_SYMBOL(snd_usb_create_midi_interface);
1773 EXPORT_SYMBOL(snd_usbmidi_input_stop);
1774 EXPORT_SYMBOL(snd_usbmidi_input_start);
1775 EXPORT_SYMBOL(snd_usbmidi_disconnect);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree