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Merge branch 'timer/cleanup' into late/mvebu2
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / midi.c
CommitLineData
1da177e4
LT		 1/*
2 * usbmidi.c - ALSA USB MIDI driver
3 *
96f61d9a 4 * Copyright (c) 2002-2009 Clemens Ladisch
1da177e4
LT		 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
1da177e4
LT		 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>
c8846970 46#include <linux/timer.h>
1da177e4 47#include <linux/usb.h>
a65dd997 48#include <linux/wait.h>
de48c7bc 49#include <linux/usb/audio.h>
da155d5b 50#include <linux/module.h>
de48c7bc 51
1da177e4 52#include <sound/core.h>
96f61d9a 53#include <sound/control.h>
1da177e4 54#include <sound/rawmidi.h>
a7b928ac 55#include <sound/asequencer.h>
1da177e4 56#include "usbaudio.h"
e5779998 57#include "midi.h"
88a8516a 58#include "power.h"
e5779998 59#include "helper.h"
1da177e4
LT		 60
61/*
62 * define this to log all USB packets
63 */
64/* #define DUMP_PACKETS */
65
c8846970
CL		 66/*
67 * how long to wait after some USB errors, so that khubd can disconnect() us
68 * without too many spurious errors
69 */
70#define ERROR_DELAY_JIFFIES (HZ / 10)
71
ed4affa5 72#define OUTPUT_URBS 7
4773d1fb
CL		 73#define INPUT_URBS 7
74
1da177e4
LT		 75
76MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
77MODULE_DESCRIPTION("USB Audio/MIDI helper module");
78MODULE_LICENSE("Dual BSD/GPL");
79
80
81struct usb_ms_header_descriptor {
82 __u8 bLength;
83 __u8 bDescriptorType;
84 __u8 bDescriptorSubtype;
85 __u8 bcdMSC[2];
86 __le16 wTotalLength;
87} __attribute__ ((packed));
88
89struct usb_ms_endpoint_descriptor {
90 __u8 bLength;
91 __u8 bDescriptorType;
92 __u8 bDescriptorSubtype;
93 __u8 bNumEmbMIDIJack;
94 __u8 baAssocJackID[0];
95} __attribute__ ((packed));
96
86e07d34
TI		 97struct snd_usb_midi_in_endpoint;
98struct snd_usb_midi_out_endpoint;
99struct snd_usb_midi_endpoint;
1da177e4
LT		 100
101struct usb_protocol_ops {
86e07d34 102 void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int);
ed4affa5 103 void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb);
1da177e4 104 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
86e07d34
TI		 105 void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*);
106 void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*);
1da177e4
LT		 107};
108
109struct snd_usb_midi {
d82af9f9
CL		 110 struct usb_device *dev;
111 struct snd_card *card;
1da177e4 112 struct usb_interface *iface;
86e07d34
TI		 113 const struct snd_usb_audio_quirk *quirk;
114 struct snd_rawmidi *rmidi;
1da177e4
LT		 115 struct usb_protocol_ops* usb_protocol_ops;
116 struct list_head list;
c8846970 117 struct timer_list error_timer;
c0792e00 118 spinlock_t disc_lock;
59866da9 119 struct rw_semaphore disc_rwsem;
96f61d9a 120 struct mutex mutex;
d82af9f9
CL		 121 u32 usb_id;
122 int next_midi_device;
1da177e4
LT		 123
124 struct snd_usb_midi_endpoint {
86e07d34
TI		 125 struct snd_usb_midi_out_endpoint *out;
126 struct snd_usb_midi_in_endpoint *in;
1da177e4
LT		 127 } endpoints[MIDI_MAX_ENDPOINTS];
128 unsigned long input_triggered;
f5f16541
TI		 129 bool autopm_reference;
130 unsigned int opened[2];
c0792e00 131 unsigned char disconnected;
f5f16541 132 unsigned char input_running;
96f61d9a
CL		 133
134 struct snd_kcontrol *roland_load_ctl;
1da177e4
LT		 135};
136
137struct snd_usb_midi_out_endpoint {
86e07d34 138 struct snd_usb_midi* umidi;
ed4affa5
CL		 139 struct out_urb_context {
140 struct urb *urb;
141 struct snd_usb_midi_out_endpoint *ep;
142 } urbs[OUTPUT_URBS];
143 unsigned int active_urbs;
a65dd997 144 unsigned int drain_urbs;
1da177e4
LT		 145 int max_transfer; /* size of urb buffer */
146 struct tasklet_struct tasklet;
a65dd997 147 unsigned int next_urb;
1da177e4
LT		 148 spinlock_t buffer_lock;
149
150 struct usbmidi_out_port {
86e07d34
TI		 151 struct snd_usb_midi_out_endpoint* ep;
152 struct snd_rawmidi_substream *substream;
1da177e4
LT		 153 int active;
154 uint8_t cable; /* cable number << 4 */
155 uint8_t state;
156#define STATE_UNKNOWN 0
157#define STATE_1PARAM 1
158#define STATE_2PARAM_1 2
159#define STATE_2PARAM_2 3
160#define STATE_SYSEX_0 4
161#define STATE_SYSEX_1 5
162#define STATE_SYSEX_2 6
163 uint8_t data[2];
164 } ports[0x10];
165 int current_port;
a65dd997
CL		 166
167 wait_queue_head_t drain_wait;
1da177e4
LT		 168};
169
170struct snd_usb_midi_in_endpoint {
86e07d34 171 struct snd_usb_midi* umidi;
4773d1fb 172 struct urb* urbs[INPUT_URBS];
1da177e4 173 struct usbmidi_in_port {
86e07d34 174 struct snd_rawmidi_substream *substream;
d05cc104 175 u8 running_status_length;
1da177e4 176 } ports[0x10];
c8846970
CL		 177 u8 seen_f5;
178 u8 error_resubmit;
1da177e4
LT		 179 int current_port;
180};
181
86e07d34 182static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep);
1da177e4
LT		 183
184static const uint8_t snd_usbmidi_cin_length[] = {
185 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
186};
187
188/*
189 * Submits the URB, with error handling.
190 */
55016f10 191static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags)
1da177e4
LT		 192{
193 int err = usb_submit_urb(urb, flags);
194 if (err < 0 && err != -ENODEV)
195 snd_printk(KERN_ERR "usb_submit_urb: %d\n", err);
196 return err;
197}
198
199/*
200 * Error handling for URB completion functions.
201 */
202static int snd_usbmidi_urb_error(int status)
203{
c8846970
CL		 204 switch (status) {
205 /* manually unlinked, or device gone */
206 case -ENOENT:
207 case -ECONNRESET:
208 case -ESHUTDOWN:
209 case -ENODEV:
210 return -ENODEV;
211 /* errors that might occur during unplugging */
38e2bfc9
PZ		 212 case -EPROTO:
213 case -ETIME:
214 case -EILSEQ:
c8846970
CL		 215 return -EIO;
216 default:
217 snd_printk(KERN_ERR "urb status %d\n", status);
218 return 0; /* continue */
219 }
1da177e4
LT		 220}
221
222/*
223 * Receives a chunk of MIDI data.
224 */
86e07d34 225static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx,
1da177e4
LT		 226 uint8_t* data, int length)
227{
86e07d34 228 struct usbmidi_in_port* port = &ep->ports[portidx];
1da177e4
LT		 229
230 if (!port->substream) {
231 snd_printd("unexpected port %d!\n", portidx);
232 return;
233 }
234 if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
235 return;
236 snd_rawmidi_receive(port->substream, data, length);
237}
238
239#ifdef DUMP_PACKETS
240static void dump_urb(const char *type, const u8 *data, int length)
241{
242 snd_printk(KERN_DEBUG "%s packet: [", type);
243 for (; length > 0; ++data, --length)
244 printk(" %02x", *data);
245 printk(" ]\n");
246}
247#else
248#define dump_urb(type, data, length) /* nothing */
249#endif
250
251/*
252 * Processes the data read from the device.
253 */
7d12e780 254static void snd_usbmidi_in_urb_complete(struct urb* urb)
1da177e4 255{
86e07d34 256 struct snd_usb_midi_in_endpoint* ep = urb->context;
1da177e4
LT		 257
258 if (urb->status == 0) {
259 dump_urb("received", urb->transfer_buffer, urb->actual_length);
260 ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
261 urb->actual_length);
262 } else {
c8846970
CL		 263 int err = snd_usbmidi_urb_error(urb->status);
264 if (err < 0) {
265 if (err != -ENODEV) {
266 ep->error_resubmit = 1;
267 mod_timer(&ep->umidi->error_timer,
268 jiffies + ERROR_DELAY_JIFFIES);
269 }
1da177e4 270 return;
c8846970 271 }
1da177e4
LT		 272 }
273
d82af9f9 274 urb->dev = ep->umidi->dev;
3cfc1eb1 275 snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
1da177e4
LT		 276}
277
7d12e780 278static void snd_usbmidi_out_urb_complete(struct urb* urb)
1da177e4 279{
ed4affa5
CL		 280 struct out_urb_context *context = urb->context;
281 struct snd_usb_midi_out_endpoint* ep = context->ep;
a65dd997 282 unsigned int urb_index;
1da177e4
LT		 283
284 spin_lock(&ep->buffer_lock);
a65dd997
CL		 285 urb_index = context - ep->urbs;
286 ep->active_urbs &= ~(1 << urb_index);
287 if (unlikely(ep->drain_urbs)) {
288 ep->drain_urbs &= ~(1 << urb_index);
289 wake_up(&ep->drain_wait);
290 }
1da177e4
LT		 291 spin_unlock(&ep->buffer_lock);
292 if (urb->status < 0) {
c8846970
CL		 293 int err = snd_usbmidi_urb_error(urb->status);
294 if (err < 0) {
295 if (err != -ENODEV)
296 mod_timer(&ep->umidi->error_timer,
297 jiffies + ERROR_DELAY_JIFFIES);
1da177e4 298 return;
c8846970 299 }
1da177e4
LT		 300 }
301 snd_usbmidi_do_output(ep);
302}
303
304/*
305 * This is called when some data should be transferred to the device
306 * (from one or more substreams).
307 */
86e07d34 308static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep)
1da177e4 309{
ed4affa5
CL		 310 unsigned int urb_index;
311 struct urb* urb;
1da177e4
LT		 312 unsigned long flags;
313
314 spin_lock_irqsave(&ep->buffer_lock, flags);
d82af9f9 315 if (ep->umidi->disconnected) {
1da177e4
LT		 316 spin_unlock_irqrestore(&ep->buffer_lock, flags);
317 return;
318 }
319
a65dd997 320 urb_index = ep->next_urb;
ed4affa5 321 for (;;) {
a65dd997
CL		 322 if (!(ep->active_urbs & (1 << urb_index))) {
323 urb = ep->urbs[urb_index].urb;
324 urb->transfer_buffer_length = 0;
325 ep->umidi->usb_protocol_ops->output(ep, urb);
326 if (urb->transfer_buffer_length == 0)
ed4affa5 327 break;
1da177e4 328
a65dd997
CL		 329 dump_urb("sending", urb->transfer_buffer,
330 urb->transfer_buffer_length);
d82af9f9 331 urb->dev = ep->umidi->dev;
a65dd997
CL		 332 if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0)
333 break;
334 ep->active_urbs |= 1 << urb_index;
335 }
336 if (++urb_index >= OUTPUT_URBS)
337 urb_index = 0;
338 if (urb_index == ep->next_urb)
ed4affa5 339 break;
1da177e4 340 }
a65dd997 341 ep->next_urb = urb_index;
1da177e4
LT		 342 spin_unlock_irqrestore(&ep->buffer_lock, flags);
343}
344
345static void snd_usbmidi_out_tasklet(unsigned long data)
346{
86e07d34 347 struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data;
1da177e4
LT		 348
349 snd_usbmidi_do_output(ep);
350}
351
c8846970
CL		 352/* called after transfers had been interrupted due to some USB error */
353static void snd_usbmidi_error_timer(unsigned long data)
354{
86e07d34 355 struct snd_usb_midi *umidi = (struct snd_usb_midi *)data;
4773d1fb 356 unsigned int i, j;
c8846970 357
c0792e00
TI		 358 spin_lock(&umidi->disc_lock);
359 if (umidi->disconnected) {
360 spin_unlock(&umidi->disc_lock);
361 return;
362 }
c8846970 363 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
86e07d34 364 struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
c8846970
CL		 365 if (in && in->error_resubmit) {
366 in->error_resubmit = 0;
4773d1fb 367 for (j = 0; j < INPUT_URBS; ++j) {
d82af9f9 368 in->urbs[j]->dev = umidi->dev;
4773d1fb
CL		 369 snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC);
370 }
c8846970
CL		 371 }
372 if (umidi->endpoints[i].out)
373 snd_usbmidi_do_output(umidi->endpoints[i].out);
374 }
c0792e00 375 spin_unlock(&umidi->disc_lock);
c8846970
CL		 376}
377
1da177e4 378/* helper function to send static data that may not DMA-able */
86e07d34 379static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep,
1da177e4
LT		 380 const void *data, int len)
381{
ed4affa5 382 int err = 0;
52978be6 383 void *buf = kmemdup(data, len, GFP_KERNEL);
1da177e4
LT		 384 if (!buf)
385 return -ENOMEM;
1da177e4 386 dump_urb("sending", buf, len);
ed4affa5 387 if (ep->urbs[0].urb)
d82af9f9 388 err = usb_bulk_msg(ep->umidi->dev, ep->urbs[0].urb->pipe,
ed4affa5 389 buf, len, NULL, 250);
1da177e4
LT		 390 kfree(buf);
391 return err;
392}
393
394/*
395 * Standard USB MIDI protocol: see the spec.
396 * Midiman protocol: like the standard protocol, but the control byte is the
397 * fourth byte in each packet, and uses length instead of CIN.
398 */
399
86e07d34 400static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep,
1da177e4
LT		 401 uint8_t* buffer, int buffer_length)
402{
403 int i;
404
405 for (i = 0; i + 3 < buffer_length; i += 4)
406 if (buffer[i] != 0) {
407 int cable = buffer[i] >> 4;
408 int length = snd_usbmidi_cin_length[buffer[i] & 0x0f];
409 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
410 }
411}
412
86e07d34 413static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep,
1da177e4
LT		 414 uint8_t* buffer, int buffer_length)
415{
416 int i;
417
418 for (i = 0; i + 3 < buffer_length; i += 4)
419 if (buffer[i + 3] != 0) {
420 int port = buffer[i + 3] >> 4;
421 int length = buffer[i + 3] & 3;
422 snd_usbmidi_input_data(ep, port, &buffer[i], length);
423 }
424}
425
d05cc104
CL		 426/*
427 * Buggy M-Audio device: running status on input results in a packet that has
428 * the data bytes but not the status byte and that is marked with CIN 4.
429 */
430static void snd_usbmidi_maudio_broken_running_status_input(
431 struct snd_usb_midi_in_endpoint* ep,
432 uint8_t* buffer, int buffer_length)
433{
434 int i;
435
436 for (i = 0; i + 3 < buffer_length; i += 4)
437 if (buffer[i] != 0) {
438 int cable = buffer[i] >> 4;
439 u8 cin = buffer[i] & 0x0f;
440 struct usbmidi_in_port *port = &ep->ports[cable];
441 int length;
21af7d8c 442
d05cc104
CL		 443 length = snd_usbmidi_cin_length[cin];
444 if (cin == 0xf && buffer[i + 1] >= 0xf8)
445 ; /* realtime msg: no running status change */
446 else if (cin >= 0x8 && cin <= 0xe)
447 /* channel msg */
448 port->running_status_length = length - 1;
449 else if (cin == 0x4 &&
450 port->running_status_length != 0 &&
451 buffer[i + 1] < 0x80)
452 /* CIN 4 that is not a SysEx */
453 length = port->running_status_length;
454 else
455 /*
456 * All other msgs cannot begin running status.
457 * (A channel msg sent as two or three CIN 0xF
458 * packets could in theory, but this device
459 * doesn't use this format.)
460 */
461 port->running_status_length = 0;
462 snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
463 }
464}
465
61870aed
CL		 466/*
467 * CME protocol: like the standard protocol, but SysEx commands are sent as a
468 * single USB packet preceded by a 0x0F byte.
469 */
470static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
471 uint8_t *buffer, int buffer_length)
472{
473 if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
474 snd_usbmidi_standard_input(ep, buffer, buffer_length);
475 else
476 snd_usbmidi_input_data(ep, buffer[0] >> 4,
477 &buffer[1], buffer_length - 1);
478}
479
1da177e4
LT		 480/*
481 * Adds one USB MIDI packet to the output buffer.
482 */
483static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0,
484 uint8_t p1, uint8_t p2, uint8_t p3)
485{
486
487 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
488 buf[0] = p0;
489 buf[1] = p1;
490 buf[2] = p2;
491 buf[3] = p3;
492 urb->transfer_buffer_length += 4;
493}
494
495/*
496 * Adds one Midiman packet to the output buffer.
497 */
498static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0,
499 uint8_t p1, uint8_t p2, uint8_t p3)
500{
501
502 uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
503 buf[0] = p1;
504 buf[1] = p2;
505 buf[2] = p3;
506 buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f];
507 urb->transfer_buffer_length += 4;
508}
509
510/*
511 * Converts MIDI commands to USB MIDI packets.
512 */
86e07d34 513static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port,
1da177e4
LT		 514 uint8_t b, struct urb* urb)
515{
516 uint8_t p0 = port->cable;
517 void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) =
518 port->ep->umidi->usb_protocol_ops->output_packet;
519
520 if (b >= 0xf8) {
521 output_packet(urb, p0 | 0x0f, b, 0, 0);
522 } else if (b >= 0xf0) {
523 switch (b) {
524 case 0xf0:
525 port->data[0] = b;
526 port->state = STATE_SYSEX_1;
527 break;
528 case 0xf1:
529 case 0xf3:
530 port->data[0] = b;
531 port->state = STATE_1PARAM;
532 break;
533 case 0xf2:
534 port->data[0] = b;
535 port->state = STATE_2PARAM_1;
536 break;
537 case 0xf4:
538 case 0xf5:
539 port->state = STATE_UNKNOWN;
540 break;
541 case 0xf6:
542 output_packet(urb, p0 | 0x05, 0xf6, 0, 0);
543 port->state = STATE_UNKNOWN;
544 break;
545 case 0xf7:
546 switch (port->state) {
547 case STATE_SYSEX_0:
548 output_packet(urb, p0 | 0x05, 0xf7, 0, 0);
549 break;
550 case STATE_SYSEX_1:
551 output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0);
552 break;
553 case STATE_SYSEX_2:
554 output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7);
555 break;
556 }
557 port->state = STATE_UNKNOWN;
558 break;
559 }
560 } else if (b >= 0x80) {
561 port->data[0] = b;
562 if (b >= 0xc0 && b <= 0xdf)
563 port->state = STATE_1PARAM;
564 else
565 port->state = STATE_2PARAM_1;
566 } else { /* b < 0x80 */
567 switch (port->state) {
568 case STATE_1PARAM:
569 if (port->data[0] < 0xf0) {
570 p0 |= port->data[0] >> 4;
571 } else {
572 p0 |= 0x02;
573 port->state = STATE_UNKNOWN;
574 }
575 output_packet(urb, p0, port->data[0], b, 0);
576 break;
577 case STATE_2PARAM_1:
578 port->data[1] = b;
579 port->state = STATE_2PARAM_2;
580 break;
581 case STATE_2PARAM_2:
582 if (port->data[0] < 0xf0) {
583 p0 |= port->data[0] >> 4;
584 port->state = STATE_2PARAM_1;
585 } else {
586 p0 |= 0x03;
587 port->state = STATE_UNKNOWN;
588 }
589 output_packet(urb, p0, port->data[0], port->data[1], b);
590 break;
591 case STATE_SYSEX_0:
592 port->data[0] = b;
593 port->state = STATE_SYSEX_1;
594 break;
595 case STATE_SYSEX_1:
596 port->data[1] = b;
597 port->state = STATE_SYSEX_2;
598 break;
599 case STATE_SYSEX_2:
600 output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b);
601 port->state = STATE_SYSEX_0;
602 break;
603 }
604 }
605}
606
ed4affa5
CL		 607static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep,
608 struct urb *urb)
1da177e4 609{
1da177e4
LT		 610 int p;
611
612 /* FIXME: lower-numbered ports can starve higher-numbered ports */
613 for (p = 0; p < 0x10; ++p) {
86e07d34 614 struct usbmidi_out_port* port = &ep->ports[p];
1da177e4
LT		 615 if (!port->active)
616 continue;
617 while (urb->transfer_buffer_length + 3 < ep->max_transfer) {
618 uint8_t b;
619 if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) {
620 port->active = 0;
621 break;
622 }
623 snd_usbmidi_transmit_byte(port, b, urb);
624 }
625 }
626}
627
628static struct usb_protocol_ops snd_usbmidi_standard_ops = {
629 .input = snd_usbmidi_standard_input,
630 .output = snd_usbmidi_standard_output,
631 .output_packet = snd_usbmidi_output_standard_packet,
632};
633
634static struct usb_protocol_ops snd_usbmidi_midiman_ops = {
635 .input = snd_usbmidi_midiman_input,
21af7d8c 636 .output = snd_usbmidi_standard_output,
1da177e4
LT		 637 .output_packet = snd_usbmidi_output_midiman_packet,
638};
639
d05cc104
CL		 640static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = {
641 .input = snd_usbmidi_maudio_broken_running_status_input,
21af7d8c 642 .output = snd_usbmidi_standard_output,
d05cc104
CL		 643 .output_packet = snd_usbmidi_output_standard_packet,
644};
645
61870aed
CL		 646static struct usb_protocol_ops snd_usbmidi_cme_ops = {
647 .input = snd_usbmidi_cme_input,
648 .output = snd_usbmidi_standard_output,
649 .output_packet = snd_usbmidi_output_standard_packet,
650};
651
4434ade8
KF		 652/*
653 * AKAI MPD16 protocol:
654 *
655 * For control port (endpoint 1):
656 * ==============================
657 * One or more chunks consisting of first byte of (0x10 | msg_len) and then a
658 * SysEx message (msg_len=9 bytes long).
659 *
660 * For data port (endpoint 2):
661 * ===========================
662 * One or more chunks consisting of first byte of (0x20 | msg_len) and then a
663 * MIDI message (msg_len bytes long)
664 *
665 * Messages sent: Active Sense, Note On, Poly Pressure, Control Change.
666 */
667static void snd_usbmidi_akai_input(struct snd_usb_midi_in_endpoint *ep,
668 uint8_t *buffer, int buffer_length)
669{
670 unsigned int pos = 0;
671 unsigned int len = (unsigned int)buffer_length;
672 while (pos < len) {
673 unsigned int port = (buffer[pos] >> 4) - 1;
674 unsigned int msg_len = buffer[pos] & 0x0f;
675 pos++;
676 if (pos + msg_len <= len && port < 2)
677 snd_usbmidi_input_data(ep, 0, &buffer[pos], msg_len);
678 pos += msg_len;
679 }
680}
681
682#define MAX_AKAI_SYSEX_LEN 9
683
684static void snd_usbmidi_akai_output(struct snd_usb_midi_out_endpoint *ep,
685 struct urb *urb)
686{
687 uint8_t *msg;
688 int pos, end, count, buf_end;
689 uint8_t tmp[MAX_AKAI_SYSEX_LEN];
690 struct snd_rawmidi_substream *substream = ep->ports[0].substream;
691
692 if (!ep->ports[0].active)
693 return;
694
695 msg = urb->transfer_buffer + urb->transfer_buffer_length;
696 buf_end = ep->max_transfer - MAX_AKAI_SYSEX_LEN - 1;
697
698 /* only try adding more data when there's space for at least 1 SysEx */
699 while (urb->transfer_buffer_length < buf_end) {
700 count = snd_rawmidi_transmit_peek(substream,
701 tmp, MAX_AKAI_SYSEX_LEN);
702 if (!count) {
703 ep->ports[0].active = 0;
704 return;
705 }
706 /* try to skip non-SysEx data */
707 for (pos = 0; pos < count && tmp[pos] != 0xF0; pos++)
708 ;
709
710 if (pos > 0) {
711 snd_rawmidi_transmit_ack(substream, pos);
712 continue;
713 }
714
715 /* look for the start or end marker */
716 for (end = 1; end < count && tmp[end] < 0xF0; end++)
717 ;
718
719 /* next SysEx started before the end of current one */
720 if (end < count && tmp[end] == 0xF0) {
721 /* it's incomplete - drop it */
722 snd_rawmidi_transmit_ack(substream, end);
723 continue;
724 }
725 /* SysEx complete */
726 if (end < count && tmp[end] == 0xF7) {
727 /* queue it, ack it, and get the next one */
728 count = end + 1;
729 msg[0] = 0x10 | count;
730 memcpy(&msg[1], tmp, count);
731 snd_rawmidi_transmit_ack(substream, count);
732 urb->transfer_buffer_length += count + 1;
733 msg += count + 1;
734 continue;
735 }
736 /* less than 9 bytes and no end byte - wait for more */
737 if (count < MAX_AKAI_SYSEX_LEN) {
738 ep->ports[0].active = 0;
739 return;
740 }
741 /* 9 bytes and no end marker in sight - malformed, skip it */
742 snd_rawmidi_transmit_ack(substream, count);
743 }
744}
745
746static struct usb_protocol_ops snd_usbmidi_akai_ops = {
747 .input = snd_usbmidi_akai_input,
748 .output = snd_usbmidi_akai_output,
749};
750
1da177e4
LT		 751/*
752 * Novation USB MIDI protocol: number of data bytes is in the first byte
753 * (when receiving) (+1!) or in the second byte (when sending); data begins
754 * at the third byte.
755 */
756
86e07d34 757static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep,
1da177e4
LT		 758 uint8_t* buffer, int buffer_length)
759{
760 if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
761 return;
762 snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
763}
764
ed4affa5
CL		 765static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep,
766 struct urb *urb)
1da177e4
LT		 767{
768 uint8_t* transfer_buffer;
769 int count;
770
771 if (!ep->ports[0].active)
772 return;
ed4affa5 773 transfer_buffer = urb->transfer_buffer;
1da177e4
LT		 774 count = snd_rawmidi_transmit(ep->ports[0].substream,
775 &transfer_buffer[2],
776 ep->max_transfer - 2);
777 if (count < 1) {
778 ep->ports[0].active = 0;
779 return;
780 }
781 transfer_buffer[0] = 0;
782 transfer_buffer[1] = count;
ed4affa5 783 urb->transfer_buffer_length = 2 + count;
1da177e4
LT		 784}
785
786static struct usb_protocol_ops snd_usbmidi_novation_ops = {
787 .input = snd_usbmidi_novation_input,
788 .output = snd_usbmidi_novation_output,
789};
790
791/*
c7f57216 792 * "raw" protocol: just move raw MIDI bytes from/to the endpoint
1da177e4
LT		 793 */
794
86e07d34 795static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
6155aff8 796 uint8_t* buffer, int buffer_length)
1da177e4
LT		 797{
798 snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
799}
800
ed4affa5
CL		 801static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep,
802 struct urb *urb)
1da177e4
LT		 803{
804 int count;
805
806 if (!ep->ports[0].active)
807 return;
808 count = snd_rawmidi_transmit(ep->ports[0].substream,
ed4affa5 809 urb->transfer_buffer,
1da177e4
LT		 810 ep->max_transfer);
811 if (count < 1) {
812 ep->ports[0].active = 0;
813 return;
814 }
ed4affa5 815 urb->transfer_buffer_length = count;
1da177e4
LT		 816}
817
6155aff8
CL		 818static struct usb_protocol_ops snd_usbmidi_raw_ops = {
819 .input = snd_usbmidi_raw_input,
820 .output = snd_usbmidi_raw_output,
1da177e4
LT		 821};
822
1ef0e0a0
KA		 823/*
824 * FTDI protocol: raw MIDI bytes, but input packets have two modem status bytes.
825 */
826
827static void snd_usbmidi_ftdi_input(struct snd_usb_midi_in_endpoint* ep,
828 uint8_t* buffer, int buffer_length)
829{
830 if (buffer_length > 2)
831 snd_usbmidi_input_data(ep, 0, buffer + 2, buffer_length - 2);
832}
833
834static struct usb_protocol_ops snd_usbmidi_ftdi_ops = {
835 .input = snd_usbmidi_ftdi_input,
836 .output = snd_usbmidi_raw_output,
837};
838
030a07e4
KW		 839static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep,
840 uint8_t *buffer, int buffer_length)
841{
842 if (buffer_length != 9)
843 return;
844 buffer_length = 8;
845 while (buffer_length && buffer[buffer_length - 1] == 0xFD)
846 buffer_length--;
847 if (buffer_length)
848 snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
849}
850
ed4affa5
CL		 851static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
852 struct urb *urb)
030a07e4
KW		 853{
854 int count;
855
856 if (!ep->ports[0].active)
857 return;
4f4e8f69
PZ		 858 switch (snd_usb_get_speed(ep->umidi->dev)) {
859 case USB_SPEED_HIGH:
860 case USB_SPEED_SUPER:
861 count = 1;
862 break;
863 default:
864 count = 2;
865 }
030a07e4 866 count = snd_rawmidi_transmit(ep->ports[0].substream,
ed4affa5 867 urb->transfer_buffer,
030a07e4
KW		 868 count);
869 if (count < 1) {
870 ep->ports[0].active = 0;
871 return;
872 }
873
921eebdc
KW		 874 memset(urb->transfer_buffer + count, 0xFD, ep->max_transfer - count);
875 urb->transfer_buffer_length = ep->max_transfer;
030a07e4
KW		 876}
877
878static struct usb_protocol_ops snd_usbmidi_122l_ops = {
879 .input = snd_usbmidi_us122l_input,
880 .output = snd_usbmidi_us122l_output,
881};
882
1da177e4
LT		 883/*
884 * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
885 */
886
86e07d34 887static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep)
1da177e4
LT		 888{
889 static const u8 init_data[] = {
890 /* initialization magic: "get version" */
891 0xf0,
892 0x00, 0x20, 0x31, /* Emagic */
893 0x64, /* Unitor8 */
894 0x0b, /* version number request */
895 0x00, /* command version */
896 0x00, /* EEPROM, box 0 */
897 0xf7
898 };
899 send_bulk_static_data(ep, init_data, sizeof(init_data));
900 /* while we're at it, pour on more magic */
901 send_bulk_static_data(ep, init_data, sizeof(init_data));
902}
903
86e07d34 904static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep)
1da177e4
LT		 905{
906 static const u8 finish_data[] = {
907 /* switch to patch mode with last preset */
908 0xf0,
909 0x00, 0x20, 0x31, /* Emagic */
910 0x64, /* Unitor8 */
911 0x10, /* patch switch command */
912 0x00, /* command version */
913 0x7f, /* to all boxes */
914 0x40, /* last preset in EEPROM */
915 0xf7
916 };
917 send_bulk_static_data(ep, finish_data, sizeof(finish_data));
918}
919
86e07d34 920static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep,
1da177e4
LT		 921 uint8_t* buffer, int buffer_length)
922{
c347e9fc
CL		 923 int i;
924
925 /* FF indicates end of valid data */
926 for (i = 0; i < buffer_length; ++i)
927 if (buffer[i] == 0xff) {
928 buffer_length = i;
929 break;
930 }
1da177e4
LT		 931
932 /* handle F5 at end of last buffer */
933 if (ep->seen_f5)
934 goto switch_port;
935
936 while (buffer_length > 0) {
1da177e4
LT		 937 /* determine size of data until next F5 */
938 for (i = 0; i < buffer_length; ++i)
939 if (buffer[i] == 0xf5)
940 break;
941 snd_usbmidi_input_data(ep, ep->current_port, buffer, i);
942 buffer += i;
943 buffer_length -= i;
944
945 if (buffer_length <= 0)
946 break;
947 /* assert(buffer[0] == 0xf5); */
948 ep->seen_f5 = 1;
949 ++buffer;
950 --buffer_length;
951
952 switch_port:
953 if (buffer_length <= 0)
954 break;
955 if (buffer[0] < 0x80) {
956 ep->current_port = (buffer[0] - 1) & 15;
957 ++buffer;
958 --buffer_length;
959 }
960 ep->seen_f5 = 0;
961 }
962}
963
ed4affa5
CL		 964static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep,
965 struct urb *urb)
1da177e4
LT		 966{
967 int port0 = ep->current_port;
ed4affa5 968 uint8_t* buf = urb->transfer_buffer;
1da177e4
LT		 969 int buf_free = ep->max_transfer;
970 int length, i;
971
972 for (i = 0; i < 0x10; ++i) {
973 /* round-robin, starting at the last current port */
974 int portnum = (port0 + i) & 15;
86e07d34 975 struct usbmidi_out_port* port = &ep->ports[portnum];
1da177e4
LT		 976
977 if (!port->active)
978 continue;
979 if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) {
980 port->active = 0;
981 continue;
982 }
983
984 if (portnum != ep->current_port) {
985 if (buf_free < 2)
986 break;
987 ep->current_port = portnum;
988 buf[0] = 0xf5;
989 buf[1] = (portnum + 1) & 15;
990 buf += 2;
991 buf_free -= 2;
992 }
993
994 if (buf_free < 1)
995 break;
996 length = snd_rawmidi_transmit(port->substream, buf, buf_free);
997 if (length > 0) {
998 buf += length;
999 buf_free -= length;
1000 if (buf_free < 1)
1001 break;
1002 }
1003 }
c347e9fc
CL		 1004 if (buf_free < ep->max_transfer && buf_free > 0) {
1005 *buf = 0xff;
1006 --buf_free;
1007 }
ed4affa5 1008 urb->transfer_buffer_length = ep->max_transfer - buf_free;
1da177e4
LT		 1009}
1010
1011static struct usb_protocol_ops snd_usbmidi_emagic_ops = {
1012 .input = snd_usbmidi_emagic_input,
1013 .output = snd_usbmidi_emagic_output,
1014 .init_out_endpoint = snd_usbmidi_emagic_init_out,
1015 .finish_out_endpoint = snd_usbmidi_emagic_finish_out,
1016};
1017
1018
96f61d9a
CL		 1019static void update_roland_altsetting(struct snd_usb_midi* umidi)
1020{
1021 struct usb_interface *intf;
1022 struct usb_host_interface *hostif;
1023 struct usb_interface_descriptor *intfd;
1024 int is_light_load;
1025
1026 intf = umidi->iface;
1027 is_light_load = intf->cur_altsetting != intf->altsetting;
1028 if (umidi->roland_load_ctl->private_value == is_light_load)
1029 return;
1030 hostif = &intf->altsetting[umidi->roland_load_ctl->private_value];
1031 intfd = get_iface_desc(hostif);
1032 snd_usbmidi_input_stop(&umidi->list);
d82af9f9 1033 usb_set_interface(umidi->dev, intfd->bInterfaceNumber,
96f61d9a
CL		 1034 intfd->bAlternateSetting);
1035 snd_usbmidi_input_start(&umidi->list);
1036}
1037
f5f16541
TI		 1038static int substream_open(struct snd_rawmidi_substream *substream, int dir,
1039 int open)
96f61d9a
CL		 1040{
1041 struct snd_usb_midi* umidi = substream->rmidi->private_data;
1042 struct snd_kcontrol *ctl;
f5f16541 1043 int err;
96f61d9a 1044
59866da9
TI		 1045 down_read(&umidi->disc_rwsem);
1046 if (umidi->disconnected) {
1047 up_read(&umidi->disc_rwsem);
f5f16541 1048 return open ? -ENODEV : 0;
59866da9
TI		 1049 }
1050
96f61d9a
CL		 1051 mutex_lock(&umidi->mutex);
1052 if (open) {
f5f16541
TI		 1053 if (!umidi->opened[0] && !umidi->opened[1]) {
1054 err = usb_autopm_get_interface(umidi->iface);
1055 umidi->autopm_reference = err >= 0;
1056 if (err < 0 && err != -EACCES) {
1057 mutex_unlock(&umidi->mutex);
1058 up_read(&umidi->disc_rwsem);
1059 return -EIO;
1060 }
1061 if (umidi->roland_load_ctl) {
1062 ctl = umidi->roland_load_ctl;
1063 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1064 snd_ctl_notify(umidi->card,
96f61d9a 1065 SNDRV_CTL_EVENT_MASK_INFO, &ctl->id);
f5f16541
TI		 1066 update_roland_altsetting(umidi);
1067 }
96f61d9a 1068 }
f5f16541
TI		 1069 umidi->opened[dir]++;
1070 if (umidi->opened[1])
1071 snd_usbmidi_input_start(&umidi->list);
96f61d9a 1072 } else {
f5f16541
TI		 1073 umidi->opened[dir]--;
1074 if (!umidi->opened[1])
1075 snd_usbmidi_input_stop(&umidi->list);
1076 if (!umidi->opened[0] && !umidi->opened[1]) {
1077 if (umidi->roland_load_ctl) {
1078 ctl = umidi->roland_load_ctl;
1079 ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1080 snd_ctl_notify(umidi->card,
96f61d9a 1081 SNDRV_CTL_EVENT_MASK_INFO, &ctl->id);
f5f16541
TI		 1082 }
1083 if (umidi->autopm_reference)
1084 usb_autopm_put_interface(umidi->iface);
96f61d9a
CL		 1085 }
1086 }
1087 mutex_unlock(&umidi->mutex);
59866da9 1088 up_read(&umidi->disc_rwsem);
f5f16541 1089 return 0;
96f61d9a
CL		 1090}
1091
86e07d34 1092static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
1da177e4 1093{
86e07d34
TI		 1094 struct snd_usb_midi* umidi = substream->rmidi->private_data;
1095 struct usbmidi_out_port* port = NULL;
1da177e4
LT		 1096 int i, j;
1097
1098 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
1099 if (umidi->endpoints[i].out)
1100 for (j = 0; j < 0x10; ++j)
1101 if (umidi->endpoints[i].out->ports[j].substream == substream) {
1102 port = &umidi->endpoints[i].out->ports[j];
1103 break;
1104 }
1105 if (!port) {
1106 snd_BUG();
1107 return -ENXIO;
1108 }
59866da9 1109
1da177e4
LT		 1110 substream->runtime->private_data = port;
1111 port->state = STATE_UNKNOWN;
f5f16541 1112 return substream_open(substream, 0, 1);
1da177e4
LT		 1113}
1114
86e07d34 1115static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
1da177e4 1116{
f5f16541 1117 return substream_open(substream, 0, 0);
1da177e4
LT		 1118}
1119
86e07d34 1120static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1da177e4 1121{
86e07d34 1122 struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data;
1da177e4
LT		 1123
1124 port->active = up;
1125 if (up) {
d82af9f9 1126 if (port->ep->umidi->disconnected) {
1da177e4
LT		 1127 /* gobble up remaining bytes to prevent wait in
1128 * snd_rawmidi_drain_output */
1129 while (!snd_rawmidi_transmit_empty(substream))
1130 snd_rawmidi_transmit_ack(substream, 1);
1131 return;
1132 }
1f04128a 1133 tasklet_schedule(&port->ep->tasklet);
1da177e4
LT		 1134 }
1135}
1136
a65dd997
CL		 1137static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream)
1138{
1139 struct usbmidi_out_port* port = substream->runtime->private_data;
1140 struct snd_usb_midi_out_endpoint *ep = port->ep;
1141 unsigned int drain_urbs;
1142 DEFINE_WAIT(wait);
1143 long timeout = msecs_to_jiffies(50);
1144
29aac005
TI		 1145 if (ep->umidi->disconnected)
1146 return;
a65dd997
CL		 1147 /*
1148 * The substream buffer is empty, but some data might still be in the
1149 * currently active URBs, so we have to wait for those to complete.
1150 */
1151 spin_lock_irq(&ep->buffer_lock);
1152 drain_urbs = ep->active_urbs;
1153 if (drain_urbs) {
1154 ep->drain_urbs |= drain_urbs;
1155 do {
1156 prepare_to_wait(&ep->drain_wait, &wait,
1157 TASK_UNINTERRUPTIBLE);
1158 spin_unlock_irq(&ep->buffer_lock);
1159 timeout = schedule_timeout(timeout);
1160 spin_lock_irq(&ep->buffer_lock);
1161 drain_urbs &= ep->drain_urbs;
1162 } while (drain_urbs && timeout);
1163 finish_wait(&ep->drain_wait, &wait);
1164 }
1165 spin_unlock_irq(&ep->buffer_lock);
1166}
1167
86e07d34 1168static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
1da177e4 1169{
f5f16541 1170 return substream_open(substream, 1, 1);
1da177e4
LT		 1171}
1172
86e07d34 1173static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream)
1da177e4 1174{
f5f16541 1175 return substream_open(substream, 1, 0);
1da177e4
LT		 1176}
1177
86e07d34 1178static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1da177e4 1179{
86e07d34 1180 struct snd_usb_midi* umidi = substream->rmidi->private_data;
1da177e4
LT		 1181
1182 if (up)
1183 set_bit(substream->number, &umidi->input_triggered);
1184 else
1185 clear_bit(substream->number, &umidi->input_triggered);
1186}
1187
86e07d34 1188static struct snd_rawmidi_ops snd_usbmidi_output_ops = {
1da177e4
LT		 1189 .open = snd_usbmidi_output_open,
1190 .close = snd_usbmidi_output_close,
1191 .trigger = snd_usbmidi_output_trigger,
a65dd997 1192 .drain = snd_usbmidi_output_drain,
1da177e4
LT		 1193};
1194
86e07d34 1195static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
1da177e4
LT		 1196 .open = snd_usbmidi_input_open,
1197 .close = snd_usbmidi_input_close,
1198 .trigger = snd_usbmidi_input_trigger
1199};
1200
ed4affa5
CL		 1201static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb,
1202 unsigned int buffer_length)
1203{
997ea58e
DM		 1204 usb_free_coherent(umidi->dev, buffer_length,
1205 urb->transfer_buffer, urb->transfer_dma);
ed4affa5
CL		 1206 usb_free_urb(urb);
1207}
1208
1da177e4
LT		 1209/*
1210 * Frees an input endpoint.
1211 * May be called when ep hasn't been initialized completely.
1212 */
86e07d34 1213static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep)
1da177e4 1214{
4773d1fb
CL		 1215 unsigned int i;
1216
ed4affa5
CL		 1217 for (i = 0; i < INPUT_URBS; ++i)
1218 if (ep->urbs[i])
1219 free_urb_and_buffer(ep->umidi, ep->urbs[i],
1220 ep->urbs[i]->transfer_buffer_length);
1da177e4
LT		 1221 kfree(ep);
1222}
1223
1224/*
1225 * Creates an input endpoint.
1226 */
86e07d34
TI		 1227static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
1228 struct snd_usb_midi_endpoint_info* ep_info,
1229 struct snd_usb_midi_endpoint* rep)
1da177e4 1230{
86e07d34 1231 struct snd_usb_midi_in_endpoint* ep;
1da177e4
LT		 1232 void* buffer;
1233 unsigned int pipe;
1234 int length;
4773d1fb 1235 unsigned int i;
1da177e4
LT		 1236
1237 rep->in = NULL;
561b220a 1238 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
1da177e4
LT		 1239 if (!ep)
1240 return -ENOMEM;
1241 ep->umidi = umidi;
1242
4773d1fb
CL		 1243 for (i = 0; i < INPUT_URBS; ++i) {
1244 ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
1245 if (!ep->urbs[i]) {
1246 snd_usbmidi_in_endpoint_delete(ep);
1247 return -ENOMEM;
1248 }
1da177e4
LT		 1249 }
1250 if (ep_info->in_interval)
d82af9f9 1251 pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
1da177e4 1252 else
d82af9f9
CL		 1253 pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
1254 length = usb_maxpacket(umidi->dev, pipe, 0);
4773d1fb 1255 for (i = 0; i < INPUT_URBS; ++i) {
997ea58e
DM		 1256 buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
1257 &ep->urbs[i]->transfer_dma);
4773d1fb
CL		 1258 if (!buffer) {
1259 snd_usbmidi_in_endpoint_delete(ep);
1260 return -ENOMEM;
1261 }
1262 if (ep_info->in_interval)
d82af9f9 1263 usb_fill_int_urb(ep->urbs[i], umidi->dev,
4773d1fb
CL		 1264 pipe, buffer, length,
1265 snd_usbmidi_in_urb_complete,
1266 ep, ep_info->in_interval);
1267 else
d82af9f9 1268 usb_fill_bulk_urb(ep->urbs[i], umidi->dev,
4773d1fb
CL		 1269 pipe, buffer, length,
1270 snd_usbmidi_in_urb_complete, ep);
1271 ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1da177e4 1272 }
1da177e4
LT		 1273
1274 rep->in = ep;
1275 return 0;
1276}
1277
1da177e4
LT		 1278/*
1279 * Frees an output endpoint.
1280 * May be called when ep hasn't been initialized completely.
1281 */
29aac005 1282static void snd_usbmidi_out_endpoint_clear(struct snd_usb_midi_out_endpoint *ep)
1da177e4 1283{
ed4affa5
CL		 1284 unsigned int i;
1285
1286 for (i = 0; i < OUTPUT_URBS; ++i)
29aac005 1287 if (ep->urbs[i].urb) {
ed4affa5
CL		 1288 free_urb_and_buffer(ep->umidi, ep->urbs[i].urb,
1289 ep->max_transfer);
29aac005
TI		 1290 ep->urbs[i].urb = NULL;
1291 }
1292}
1293
1294static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint *ep)
1295{
1296 snd_usbmidi_out_endpoint_clear(ep);
1da177e4
LT		 1297 kfree(ep);
1298}
1299
1300/*
1301 * Creates an output endpoint, and initializes output ports.
1302 */
86e07d34
TI		 1303static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
1304 struct snd_usb_midi_endpoint_info* ep_info,
21af7d8c 1305 struct snd_usb_midi_endpoint* rep)
1da177e4 1306{
86e07d34 1307 struct snd_usb_midi_out_endpoint* ep;
ed4affa5 1308 unsigned int i;
1da177e4
LT		 1309 unsigned int pipe;
1310 void* buffer;
1311
1312 rep->out = NULL;
561b220a 1313 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
1da177e4
LT		 1314 if (!ep)
1315 return -ENOMEM;
1316 ep->umidi = umidi;
1317
ed4affa5
CL		 1318 for (i = 0; i < OUTPUT_URBS; ++i) {
1319 ep->urbs[i].urb = usb_alloc_urb(0, GFP_KERNEL);
1320 if (!ep->urbs[i].urb) {
1321 snd_usbmidi_out_endpoint_delete(ep);
1322 return -ENOMEM;
1323 }
1324 ep->urbs[i].ep = ep;
1da177e4 1325 }
a6a712ae 1326 if (ep_info->out_interval)
d82af9f9 1327 pipe = usb_sndintpipe(umidi->dev, ep_info->out_ep);
a6a712ae 1328 else
d82af9f9 1329 pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
f167e1d0
CL		 1330 switch (umidi->usb_id) {
1331 default:
d82af9f9 1332 ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
f167e1d0
CL		 1333 break;
1334 /*
1335 * Various chips declare a packet size larger than 4 bytes, but
1336 * do not actually work with larger packets:
1337 */
1338 case USB_ID(0x0a92, 0x1020): /* ESI M4U */
1339 case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */
1340 case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */
1341 case USB_ID(0x15ca, 0x1806): /* Textech USB Midi Cable */
1342 case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */
49c039f0 1343 case USB_ID(0xfc08, 0x0101): /* Unknown vendor Cable */
f167e1d0
CL		 1344 ep->max_transfer = 4;
1345 break;
921eebdc
KW		 1346 /*
1347 * Some devices only work with 9 bytes packet size:
1348 */
1349 case USB_ID(0x0644, 0x800E): /* Tascam US-122L */
1350 case USB_ID(0x0644, 0x800F): /* Tascam US-144 */
1351 ep->max_transfer = 9;
1352 break;
f167e1d0 1353 }
ed4affa5 1354 for (i = 0; i < OUTPUT_URBS; ++i) {
997ea58e
DM		 1355 buffer = usb_alloc_coherent(umidi->dev,
1356 ep->max_transfer, GFP_KERNEL,
1357 &ep->urbs[i].urb->transfer_dma);
ed4affa5
CL		 1358 if (!buffer) {
1359 snd_usbmidi_out_endpoint_delete(ep);
1360 return -ENOMEM;
1361 }
1362 if (ep_info->out_interval)
d82af9f9 1363 usb_fill_int_urb(ep->urbs[i].urb, umidi->dev,
ed4affa5
CL		 1364 pipe, buffer, ep->max_transfer,
1365 snd_usbmidi_out_urb_complete,
1366 &ep->urbs[i], ep_info->out_interval);
1367 else
d82af9f9 1368 usb_fill_bulk_urb(ep->urbs[i].urb, umidi->dev,
ed4affa5
CL		 1369 pipe, buffer, ep->max_transfer,
1370 snd_usbmidi_out_urb_complete,
1371 &ep->urbs[i]);
1372 ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
1da177e4 1373 }
1da177e4
LT		 1374
1375 spin_lock_init(&ep->buffer_lock);
1376 tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
a65dd997 1377 init_waitqueue_head(&ep->drain_wait);
1da177e4
LT		 1378
1379 for (i = 0; i < 0x10; ++i)
1380 if (ep_info->out_cables & (1 << i)) {
1381 ep->ports[i].ep = ep;
1382 ep->ports[i].cable = i << 4;
1383 }
1384
1385 if (umidi->usb_protocol_ops->init_out_endpoint)
1386 umidi->usb_protocol_ops->init_out_endpoint(ep);
1387
1388 rep->out = ep;
1389 return 0;
1390}
1391
1392/*
1393 * Frees everything.
1394 */
86e07d34 1395static void snd_usbmidi_free(struct snd_usb_midi* umidi)
1da177e4
LT		 1396{
1397 int i;
1398
1399 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
86e07d34 1400 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1da177e4
LT		 1401 if (ep->out)
1402 snd_usbmidi_out_endpoint_delete(ep->out);
1403 if (ep->in)
1404 snd_usbmidi_in_endpoint_delete(ep->in);
1405 }
96f61d9a 1406 mutex_destroy(&umidi->mutex);
1da177e4
LT		 1407 kfree(umidi);
1408}
1409
1410/*
1411 * Unlinks all URBs (must be done before the usb_device is deleted).
1412 */
ee733397 1413void snd_usbmidi_disconnect(struct list_head* p)
1da177e4 1414{
86e07d34 1415 struct snd_usb_midi* umidi;
4773d1fb 1416 unsigned int i, j;
1da177e4 1417
86e07d34 1418 umidi = list_entry(p, struct snd_usb_midi, list);
c0792e00
TI		 1419 /*
1420 * an URB's completion handler may start the timer and
1421 * a timer may submit an URB. To reliably break the cycle
1422 * a flag under lock must be used
1423 */
59866da9 1424 down_write(&umidi->disc_rwsem);
c0792e00
TI		 1425 spin_lock_irq(&umidi->disc_lock);
1426 umidi->disconnected = 1;
1427 spin_unlock_irq(&umidi->disc_lock);
59866da9
TI		 1428 up_write(&umidi->disc_rwsem);
1429
1da177e4 1430 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
86e07d34 1431 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
c8846970
CL		 1432 if (ep->out)
1433 tasklet_kill(&ep->out->tasklet);
ed4affa5
CL		 1434 if (ep->out) {
1435 for (j = 0; j < OUTPUT_URBS; ++j)
1436 usb_kill_urb(ep->out->urbs[j].urb);
1da177e4
LT		 1437 if (umidi->usb_protocol_ops->finish_out_endpoint)
1438 umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
29aac005
TI		 1439 ep->out->active_urbs = 0;
1440 if (ep->out->drain_urbs) {
1441 ep->out->drain_urbs = 0;
1442 wake_up(&ep->out->drain_wait);
1443 }
1da177e4 1444 }
f5e135af 1445 if (ep->in)
4773d1fb
CL		 1446 for (j = 0; j < INPUT_URBS; ++j)
1447 usb_kill_urb(ep->in->urbs[j]);
7a17daae 1448 /* free endpoints here; later call can result in Oops */
29aac005
TI		 1449 if (ep->out)
1450 snd_usbmidi_out_endpoint_clear(ep->out);
7a17daae
TI		 1451 if (ep->in) {
1452 snd_usbmidi_in_endpoint_delete(ep->in);
1453 ep->in = NULL;
1454 }
1da177e4 1455 }
c0792e00 1456 del_timer_sync(&umidi->error_timer);
1da177e4
LT		 1457}
1458
86e07d34 1459static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi)
1da177e4 1460{
86e07d34 1461 struct snd_usb_midi* umidi = rmidi->private_data;
1da177e4
LT		 1462 snd_usbmidi_free(umidi);
1463}
1464
86e07d34 1465static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi,
21af7d8c 1466 int stream, int number)
1da177e4
LT		 1467{
1468 struct list_head* list;
1469
1470 list_for_each(list, &umidi->rmidi->streams[stream].substreams) {
86e07d34 1471 struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list);
1da177e4
LT		 1472 if (substream->number == number)
1473 return substream;
1474 }
1475 return NULL;
1476}
1477
1478/*
1479 * This list specifies names for ports that do not fit into the standard
1480 * "(product) MIDI (n)" schema because they aren't external MIDI ports,
1481 * such as internal control or synthesizer ports.
1482 */
a7b928ac 1483static struct port_info {
27d10f56 1484 u32 id;
a7b928ac
CL		 1485 short int port;
1486 short int voices;
1487 const char *name;
1488 unsigned int seq_flags;
1489} snd_usbmidi_port_info[] = {
1490#define PORT_INFO(vendor, product, num, name_, voices_, flags) \
1491 { .id = USB_ID(vendor, product), \
1492 .port = num, .voices = voices_, \
1493 .name = name_, .seq_flags = flags }
1494#define EXTERNAL_PORT(vendor, product, num, name) \
1495 PORT_INFO(vendor, product, num, name, 0, \
1496 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1497 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1498 SNDRV_SEQ_PORT_TYPE_PORT)
1499#define CONTROL_PORT(vendor, product, num, name) \
1500 PORT_INFO(vendor, product, num, name, 0, \
1501 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1502 SNDRV_SEQ_PORT_TYPE_HARDWARE)
1503#define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \
1504 PORT_INFO(vendor, product, num, name, voices, \
1505 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1506 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1507 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1508 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1509 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1510 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1511 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1512#define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \
1513 PORT_INFO(vendor, product, num, name, voices, \
1514 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
1515 SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
1516 SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
1517 SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
1518 SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
1519 SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \
1520 SNDRV_SEQ_PORT_TYPE_HARDWARE | \
1521 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
1da177e4 1522 /* Roland UA-100 */
a7b928ac 1523 CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"),
1da177e4 1524 /* Roland SC-8850 */
a7b928ac
CL		 1525 SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128),
1526 SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128),
1527 SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128),
1528 SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128),
1529 EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"),
1530 EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"),
1da177e4 1531 /* Roland U-8 */
a7b928ac
CL		 1532 EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"),
1533 CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"),
1da177e4 1534 /* Roland SC-8820 */
a7b928ac
CL		 1535 SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64),
1536 SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64),
1537 EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"),
1da177e4 1538 /* Roland SK-500 */
a7b928ac
CL		 1539 SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64),
1540 SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64),
1541 EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"),
1da177e4 1542 /* Roland SC-D70 */
a7b928ac
CL		 1543 SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64),
1544 SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64),
1545 EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"),
1da177e4 1546 /* Edirol UM-880 */
a7b928ac 1547 CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"),
1da177e4 1548 /* Edirol SD-90 */
a7b928ac
CL		 1549 ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128),
1550 ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128),
1551 EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"),
1552 EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"),
1da177e4 1553 /* Edirol UM-550 */
a7b928ac 1554 CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"),
1da177e4 1555 /* Edirol SD-20 */
a7b928ac
CL		 1556 ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64),
1557 ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64),
1558 EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"),
1da177e4 1559 /* Edirol SD-80 */
a7b928ac
CL		 1560 ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128),
1561 ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128),
1562 EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"),
1563 EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"),
1da177e4 1564 /* Edirol UA-700 */
a7b928ac
CL		 1565 EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"),
1566 CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"),
1da177e4 1567 /* Roland VariOS */
a7b928ac
CL		 1568 EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"),
1569 EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"),
1570 EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"),
1da177e4 1571 /* Edirol PCR */
a7b928ac
CL		 1572 EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"),
1573 EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"),
1574 EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"),
1da177e4 1575 /* BOSS GS-10 */
a7b928ac
CL		 1576 EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"),
1577 CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"),
1da177e4 1578 /* Edirol UA-1000 */
a7b928ac
CL		 1579 EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"),
1580 CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"),
1da177e4 1581 /* Edirol UR-80 */
a7b928ac
CL		 1582 EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"),
1583 EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"),
1584 EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"),
1da177e4 1585 /* Edirol PCR-A */
a7b928ac
CL		 1586 EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"),
1587 EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"),
1588 EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"),
7c79b768 1589 /* Edirol UM-3EX */
a7b928ac 1590 CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"),
1da177e4 1591 /* M-Audio MidiSport 8x8 */
a7b928ac
CL		 1592 CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"),
1593 CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"),
1da177e4 1594 /* MOTU Fastlane */
a7b928ac
CL		 1595 EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"),
1596 EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"),
1da177e4 1597 /* Emagic Unitor8/AMT8/MT4 */
a7b928ac
CL		 1598 EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
1599 EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
1600 EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
4434ade8
KF		 1601 /* Akai MPD16 */
1602 CONTROL_PORT(0x09e8, 0x0062, 0, "%s Control"),
1603 PORT_INFO(0x09e8, 0x0062, 1, "%s MIDI", 0,
1604 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
1605 SNDRV_SEQ_PORT_TYPE_HARDWARE),
d39e82db
SA		 1606 /* Access Music Virus TI */
1607 EXTERNAL_PORT(0x133e, 0x0815, 0, "%s MIDI"),
1608 PORT_INFO(0x133e, 0x0815, 1, "%s Synth", 0,
1609 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
1610 SNDRV_SEQ_PORT_TYPE_HARDWARE |
1611 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER),
1da177e4
LT		 1612};
1613
a7b928ac
CL		 1614static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number)
1615{
1616 int i;
1617
1618 for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) {
d82af9f9 1619 if (snd_usbmidi_port_info[i].id == umidi->usb_id &&
a7b928ac
CL		 1620 snd_usbmidi_port_info[i].port == number)
1621 return &snd_usbmidi_port_info[i];
1622 }
1623 return NULL;
1624}
1625
1626static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number,
1627 struct snd_seq_port_info *seq_port_info)
1628{
1629 struct snd_usb_midi *umidi = rmidi->private_data;
1630 struct port_info *port_info;
1631
1632 /* TODO: read port flags from descriptors */
1633 port_info = find_port_info(umidi, number);
1634 if (port_info) {
1635 seq_port_info->type = port_info->seq_flags;
1636 seq_port_info->midi_voices = port_info->voices;
1637 }
1638}
1639
86e07d34 1640static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi,
1da177e4 1641 int stream, int number,
86e07d34 1642 struct snd_rawmidi_substream ** rsubstream)
1da177e4 1643{
a7b928ac 1644 struct port_info *port_info;
1da177e4
LT		 1645 const char *name_format;
1646
86e07d34 1647 struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number);
1da177e4
LT		 1648 if (!substream) {
1649 snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number);
1650 return;
1651 }
1652
1653 /* TODO: read port name from jack descriptor */
a7b928ac
CL		 1654 port_info = find_port_info(umidi, number);
1655 name_format = port_info ? port_info->name : "%s MIDI %d";
1da177e4 1656 snprintf(substream->name, sizeof(substream->name),
d82af9f9 1657 name_format, umidi->card->shortname, number + 1);
1da177e4
LT		 1658
1659 *rsubstream = substream;
1660}
1661
1662/*
1663 * Creates the endpoints and their ports.
1664 */
86e07d34
TI		 1665static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi,
1666 struct snd_usb_midi_endpoint_info* endpoints)
1da177e4
LT		 1667{
1668 int i, j, err;
1669 int out_ports = 0, in_ports = 0;
1670
1671 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1672 if (endpoints[i].out_cables) {
1673 err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i],
1674 &umidi->endpoints[i]);
1675 if (err < 0)
1676 return err;
1677 }
1678 if (endpoints[i].in_cables) {
1679 err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i],
1680 &umidi->endpoints[i]);
1681 if (err < 0)
1682 return err;
1683 }
1684
1685 for (j = 0; j < 0x10; ++j) {
1686 if (endpoints[i].out_cables & (1 << j)) {
1687 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports,
1688 &umidi->endpoints[i].out->ports[j].substream);
1689 ++out_ports;
1690 }
1691 if (endpoints[i].in_cables & (1 << j)) {
1692 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports,
1693 &umidi->endpoints[i].in->ports[j].substream);
1694 ++in_ports;
1695 }
1696 }
1697 }
1698 snd_printdd(KERN_INFO "created %d output and %d input ports\n",
1699 out_ports, in_ports);
1700 return 0;
1701}
1702
1703/*
1704 * Returns MIDIStreaming device capabilities.
1705 */
86e07d34
TI		 1706static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
1707 struct snd_usb_midi_endpoint_info* endpoints)
1da177e4
LT		 1708{
1709 struct usb_interface* intf;
1710 struct usb_host_interface *hostif;
1711 struct usb_interface_descriptor* intfd;
1712 struct usb_ms_header_descriptor* ms_header;
1713 struct usb_host_endpoint *hostep;
1714 struct usb_endpoint_descriptor* ep;
1715 struct usb_ms_endpoint_descriptor* ms_ep;
1716 int i, epidx;
1717
1718 intf = umidi->iface;
1719 if (!intf)
1720 return -ENXIO;
1721 hostif = &intf->altsetting[0];
1722 intfd = get_iface_desc(hostif);
1723 ms_header = (struct usb_ms_header_descriptor*)hostif->extra;
1724 if (hostif->extralen >= 7 &&
1725 ms_header->bLength >= 7 &&
1726 ms_header->bDescriptorType == USB_DT_CS_INTERFACE &&
de48c7bc 1727 ms_header->bDescriptorSubtype == UAC_HEADER)
1da177e4
LT		 1728 snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n",
1729 ms_header->bcdMSC[1], ms_header->bcdMSC[0]);
1730 else
1731 snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n");
1732
1733 epidx = 0;
1734 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1735 hostep = &hostif->endpoint[i];
1736 ep = get_ep_desc(hostep);
913ae5a2 1737 if (!usb_endpoint_xfer_bulk(ep) && !usb_endpoint_xfer_int(ep))
1da177e4
LT		 1738 continue;
1739 ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
1740 if (hostep->extralen < 4 ||
1741 ms_ep->bLength < 4 ||
1742 ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
de48c7bc 1743 ms_ep->bDescriptorSubtype != UAC_MS_GENERAL)
1da177e4 1744 continue;
42a6e66f 1745 if (usb_endpoint_dir_out(ep)) {
1da177e4
LT		 1746 if (endpoints[epidx].out_ep) {
1747 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1748 snd_printk(KERN_WARNING "too many endpoints\n");
1749 break;
1750 }
1751 }
42a6e66f
JL		 1752 endpoints[epidx].out_ep = usb_endpoint_num(ep);
1753 if (usb_endpoint_xfer_int(ep))
1da177e4 1754 endpoints[epidx].out_interval = ep->bInterval;
d82af9f9 1755 else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW)
56162aab
CL		 1756 /*
1757 * Low speed bulk transfers don't exist, so
1758 * force interrupt transfers for devices like
1759 * ESI MIDI Mate that try to use them anyway.
1760 */
1761 endpoints[epidx].out_interval = 1;
1da177e4
LT		 1762 endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1763 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1764 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1765 } else {
1766 if (endpoints[epidx].in_ep) {
1767 if (++epidx >= MIDI_MAX_ENDPOINTS) {
1768 snd_printk(KERN_WARNING "too many endpoints\n");
1769 break;
1770 }
1771 }
42a6e66f
JL		 1772 endpoints[epidx].in_ep = usb_endpoint_num(ep);
1773 if (usb_endpoint_xfer_int(ep))
1da177e4 1774 endpoints[epidx].in_interval = ep->bInterval;
d82af9f9 1775 else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW)
56162aab 1776 endpoints[epidx].in_interval = 1;
1da177e4
LT		 1777 endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
1778 snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
1779 ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
1780 }
1781 }
1782 return 0;
1783}
1784
96f61d9a
CL		 1785static int roland_load_info(struct snd_kcontrol *kcontrol,
1786 struct snd_ctl_elem_info *info)
1787{
1788 static const char *const names[] = { "High Load", "Light Load" };
1789
2a1803a7 1790 return snd_ctl_enum_info(info, 1, 2, names);
96f61d9a
CL		 1791}
1792
1793static int roland_load_get(struct snd_kcontrol *kcontrol,
1794 struct snd_ctl_elem_value *value)
1795{
1796 value->value.enumerated.item[0] = kcontrol->private_value;
1797 return 0;
1798}
1799
1800static int roland_load_put(struct snd_kcontrol *kcontrol,
1801 struct snd_ctl_elem_value *value)
1802{
1803 struct snd_usb_midi* umidi = kcontrol->private_data;
1804 int changed;
1805
1806 if (value->value.enumerated.item[0] > 1)
1807 return -EINVAL;
1808 mutex_lock(&umidi->mutex);
1809 changed = value->value.enumerated.item[0] != kcontrol->private_value;
1810 if (changed)
1811 kcontrol->private_value = value->value.enumerated.item[0];
1812 mutex_unlock(&umidi->mutex);
1813 return changed;
1814}
1815
1816static struct snd_kcontrol_new roland_load_ctl = {
1817 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1818 .name = "MIDI Input Mode",
1819 .info = roland_load_info,
1820 .get = roland_load_get,
1821 .put = roland_load_put,
1822 .private_value = 1,
1823};
1824
1da177e4
LT		 1825/*
1826 * On Roland devices, use the second alternate setting to be able to use
1827 * the interrupt input endpoint.
1828 */
86e07d34 1829static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi)
1da177e4
LT		 1830{
1831 struct usb_interface* intf;
1832 struct usb_host_interface *hostif;
1833 struct usb_interface_descriptor* intfd;
1834
1835 intf = umidi->iface;
1836 if (!intf || intf->num_altsetting != 2)
1837 return;
1838
1839 hostif = &intf->altsetting[1];
1840 intfd = get_iface_desc(hostif);
1841 if (intfd->bNumEndpoints != 2 ||
1842 (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ||
1843 (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1844 return;
1845
1846 snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n",
1847 intfd->bAlternateSetting);
d82af9f9 1848 usb_set_interface(umidi->dev, intfd->bInterfaceNumber,
1da177e4 1849 intfd->bAlternateSetting);
96f61d9a
CL		 1850
1851 umidi->roland_load_ctl = snd_ctl_new1(&roland_load_ctl, umidi);
d82af9f9 1852 if (snd_ctl_add(umidi->card, umidi->roland_load_ctl) < 0)
96f61d9a 1853 umidi->roland_load_ctl = NULL;
1da177e4
LT		 1854}
1855
1856/*
1857 * Try to find any usable endpoints in the interface.
1858 */
86e07d34
TI		 1859static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi,
1860 struct snd_usb_midi_endpoint_info* endpoint,
1da177e4
LT		 1861 int max_endpoints)
1862{
1863 struct usb_interface* intf;
1864 struct usb_host_interface *hostif;
1865 struct usb_interface_descriptor* intfd;
1866 struct usb_endpoint_descriptor* epd;
1867 int i, out_eps = 0, in_eps = 0;
1868
d82af9f9 1869 if (USB_ID_VENDOR(umidi->usb_id) == 0x0582)
1da177e4
LT		 1870 snd_usbmidi_switch_roland_altsetting(umidi);
1871
c1ab5d59 1872 if (endpoint[0].out_ep || endpoint[0].in_ep)
21af7d8c 1873 return 0;
c1ab5d59 1874
1da177e4
LT		 1875 intf = umidi->iface;
1876 if (!intf || intf->num_altsetting < 1)
1877 return -ENOENT;
1878 hostif = intf->cur_altsetting;
1879 intfd = get_iface_desc(hostif);
1880
1881 for (i = 0; i < intfd->bNumEndpoints; ++i) {
1882 epd = get_endpoint(hostif, i);
913ae5a2
JL		 1883 if (!usb_endpoint_xfer_bulk(epd) &&
1884 !usb_endpoint_xfer_int(epd))
1da177e4
LT		 1885 continue;
1886 if (out_eps < max_endpoints &&
42a6e66f
JL		 1887 usb_endpoint_dir_out(epd)) {
1888 endpoint[out_eps].out_ep = usb_endpoint_num(epd);
1889 if (usb_endpoint_xfer_int(epd))
1da177e4
LT		 1890 endpoint[out_eps].out_interval = epd->bInterval;
1891 ++out_eps;
1892 }
1893 if (in_eps < max_endpoints &&
42a6e66f
JL		 1894 usb_endpoint_dir_in(epd)) {
1895 endpoint[in_eps].in_ep = usb_endpoint_num(epd);
1896 if (usb_endpoint_xfer_int(epd))
1da177e4
LT		 1897 endpoint[in_eps].in_interval = epd->bInterval;
1898 ++in_eps;
1899 }
1900 }
1901 return (out_eps || in_eps) ? 0 : -ENOENT;
1902}
1903
1904/*
1905 * Detects the endpoints for one-port-per-endpoint protocols.
1906 */
86e07d34
TI		 1907static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi,
1908 struct snd_usb_midi_endpoint_info* endpoints)
1da177e4
LT		 1909{
1910 int err, i;
21af7d8c 1911
1da177e4
LT		 1912 err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS);
1913 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
1914 if (endpoints[i].out_ep)
1915 endpoints[i].out_cables = 0x0001;
1916 if (endpoints[i].in_ep)
1917 endpoints[i].in_cables = 0x0001;
1918 }
1919 return err;
1920}
1921
1922/*
1923 * Detects the endpoints and ports of Yamaha devices.
1924 */
86e07d34
TI		 1925static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi,
1926 struct snd_usb_midi_endpoint_info* endpoint)
1da177e4
LT		 1927{
1928 struct usb_interface* intf;
1929 struct usb_host_interface *hostif;
1930 struct usb_interface_descriptor* intfd;
1931 uint8_t* cs_desc;
1932
1933 intf = umidi->iface;
1934 if (!intf)
1935 return -ENOENT;
1936 hostif = intf->altsetting;
1937 intfd = get_iface_desc(hostif);
1938 if (intfd->bNumEndpoints < 1)
1939 return -ENOENT;
1940
1941 /*
1942 * For each port there is one MIDI_IN/OUT_JACK descriptor, not
1943 * necessarily with any useful contents. So simply count 'em.
1944 */
1945 for (cs_desc = hostif->extra;
1946 cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
1947 cs_desc += cs_desc[0]) {
c4a87ef4 1948 if (cs_desc[1] == USB_DT_CS_INTERFACE) {
de48c7bc 1949 if (cs_desc[2] == UAC_MIDI_IN_JACK)
1da177e4 1950 endpoint->in_cables = (endpoint->in_cables << 1) | 1;
de48c7bc 1951 else if (cs_desc[2] == UAC_MIDI_OUT_JACK)
1da177e4
LT		 1952 endpoint->out_cables = (endpoint->out_cables << 1) | 1;
1953 }
1954 }
1955 if (!endpoint->in_cables && !endpoint->out_cables)
1956 return -ENOENT;
1957
1958 return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
1959}
1960
1961/*
1962 * Creates the endpoints and their ports for Midiman devices.
1963 */
86e07d34
TI		 1964static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi,
1965 struct snd_usb_midi_endpoint_info* endpoint)
1da177e4 1966{
86e07d34 1967 struct snd_usb_midi_endpoint_info ep_info;
1da177e4
LT		 1968 struct usb_interface* intf;
1969 struct usb_host_interface *hostif;
1970 struct usb_interface_descriptor* intfd;
1971 struct usb_endpoint_descriptor* epd;
1972 int cable, err;
1973
1974 intf = umidi->iface;
1975 if (!intf)
1976 return -ENOENT;
1977 hostif = intf->altsetting;
1978 intfd = get_iface_desc(hostif);
1979 /*
1980 * The various MidiSport devices have more or less random endpoint
1981 * numbers, so we have to identify the endpoints by their index in
1982 * the descriptor array, like the driver for that other OS does.
1983 *
1984 * There is one interrupt input endpoint for all input ports, one
1985 * bulk output endpoint for even-numbered ports, and one for odd-
1986 * numbered ports. Both bulk output endpoints have corresponding
1987 * input bulk endpoints (at indices 1 and 3) which aren't used.
1988 */
1989 if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) {
1990 snd_printdd(KERN_ERR "not enough endpoints\n");
1991 return -ENOENT;
1992 }
1993
1994 epd = get_endpoint(hostif, 0);
913ae5a2 1995 if (!usb_endpoint_dir_in(epd) || !usb_endpoint_xfer_int(epd)) {
1da177e4
LT		 1996 snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n");
1997 return -ENXIO;
1998 }
1999 epd = get_endpoint(hostif, 2);
913ae5a2 2000 if (!usb_endpoint_dir_out(epd) || !usb_endpoint_xfer_bulk(epd)) {
1da177e4
LT		 2001 snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n");
2002 return -ENXIO;
2003 }
2004 if (endpoint->out_cables > 0x0001) {
2005 epd = get_endpoint(hostif, 4);
913ae5a2
JL		 2006 if (!usb_endpoint_dir_out(epd) ||
2007 !usb_endpoint_xfer_bulk(epd)) {
1da177e4
LT		 2008 snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n");
2009 return -ENXIO;
2010 }
2011 }
2012
2013 ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
e156ac4c 2014 ep_info.out_interval = 0;
1da177e4
LT		 2015 ep_info.out_cables = endpoint->out_cables & 0x5555;
2016 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
2017 if (err < 0)
2018 return err;
2019
2020 ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
2021 ep_info.in_interval = get_endpoint(hostif, 0)->bInterval;
2022 ep_info.in_cables = endpoint->in_cables;
2023 err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
2024 if (err < 0)
2025 return err;
2026
2027 if (endpoint->out_cables > 0x0001) {
2028 ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
2029 ep_info.out_cables = endpoint->out_cables & 0xaaaa;
2030 err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]);
2031 if (err < 0)
2032 return err;
2033 }
2034
2035 for (cable = 0; cable < 0x10; ++cable) {
2036 if (endpoint->out_cables & (1 << cable))
2037 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable,
2038 &umidi->endpoints[cable & 1].out->ports[cable].substream);
2039 if (endpoint->in_cables & (1 << cable))
2040 snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable,
2041 &umidi->endpoints[0].in->ports[cable].substream);
2042 }
2043 return 0;
2044}
2045
a7b928ac
CL		 2046static struct snd_rawmidi_global_ops snd_usbmidi_ops = {
2047 .get_port_info = snd_usbmidi_get_port_info,
2048};
2049
86e07d34 2050static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi,
1da177e4
LT		 2051 int out_ports, int in_ports)
2052{
86e07d34 2053 struct snd_rawmidi *rmidi;
1da177e4
LT		 2054 int err;
2055
d82af9f9
CL		 2056 err = snd_rawmidi_new(umidi->card, "USB MIDI",
2057 umidi->next_midi_device++,
1da177e4
LT		 2058 out_ports, in_ports, &rmidi);
2059 if (err < 0)
2060 return err;
d82af9f9 2061 strcpy(rmidi->name, umidi->card->shortname);
1da177e4
LT		 2062 rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
2063 SNDRV_RAWMIDI_INFO_INPUT |
2064 SNDRV_RAWMIDI_INFO_DUPLEX;
a7b928ac 2065 rmidi->ops = &snd_usbmidi_ops;
1da177e4
LT		 2066 rmidi->private_data = umidi;
2067 rmidi->private_free = snd_usbmidi_rawmidi_free;
2068 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops);
2069 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops);
2070
2071 umidi->rmidi = rmidi;
2072 return 0;
2073}
2074
2075/*
2076 * Temporarily stop input.
2077 */
2078void snd_usbmidi_input_stop(struct list_head* p)
2079{
86e07d34 2080 struct snd_usb_midi* umidi;
4773d1fb 2081 unsigned int i, j;
1da177e4 2082
86e07d34 2083 umidi = list_entry(p, struct snd_usb_midi, list);
f5f16541
TI		 2084 if (!umidi->input_running)
2085 return;
1da177e4 2086 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
86e07d34 2087 struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
1da177e4 2088 if (ep->in)
4773d1fb
CL		 2089 for (j = 0; j < INPUT_URBS; ++j)
2090 usb_kill_urb(ep->in->urbs[j]);
1da177e4 2091 }
f5f16541 2092 umidi->input_running = 0;
1da177e4
LT		 2093}
2094
86e07d34 2095static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep)
1da177e4 2096{
4773d1fb
CL		 2097 unsigned int i;
2098
2099 if (!ep)
2100 return;
2101 for (i = 0; i < INPUT_URBS; ++i) {
2102 struct urb* urb = ep->urbs[i];
d82af9f9 2103 urb->dev = ep->umidi->dev;
1da177e4
LT		 2104 snd_usbmidi_submit_urb(urb, GFP_KERNEL);
2105 }
2106}
2107
2108/*
2109 * Resume input after a call to snd_usbmidi_input_stop().
2110 */
2111void snd_usbmidi_input_start(struct list_head* p)
2112{
86e07d34 2113 struct snd_usb_midi* umidi;
1da177e4
LT		 2114 int i;
2115
86e07d34 2116 umidi = list_entry(p, struct snd_usb_midi, list);
f5f16541
TI		 2117 if (umidi->input_running || !umidi->opened[1])
2118 return;
1da177e4
LT		 2119 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
2120 snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
f5f16541 2121 umidi->input_running = 1;
1da177e4
LT		 2122}
2123
2124/*
2125 * Creates and registers everything needed for a MIDI streaming interface.
2126 */
d82af9f9
CL		 2127int snd_usbmidi_create(struct snd_card *card,
2128 struct usb_interface* iface,
2129 struct list_head *midi_list,
2130 const struct snd_usb_audio_quirk* quirk)
1da177e4 2131{
86e07d34
TI		 2132 struct snd_usb_midi* umidi;
2133 struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS];
1da177e4
LT		 2134 int out_ports, in_ports;
2135 int i, err;
2136
561b220a 2137 umidi = kzalloc(sizeof(*umidi), GFP_KERNEL);
1da177e4
LT		 2138 if (!umidi)
2139 return -ENOMEM;
d82af9f9
CL		 2140 umidi->dev = interface_to_usbdev(iface);
2141 umidi->card = card;
1da177e4
LT		 2142 umidi->iface = iface;
2143 umidi->quirk = quirk;
2144 umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
c8846970 2145 init_timer(&umidi->error_timer);
c0792e00 2146 spin_lock_init(&umidi->disc_lock);
59866da9 2147 init_rwsem(&umidi->disc_rwsem);
96f61d9a 2148 mutex_init(&umidi->mutex);
d82af9f9
CL		 2149 umidi->usb_id = USB_ID(le16_to_cpu(umidi->dev->descriptor.idVendor),
2150 le16_to_cpu(umidi->dev->descriptor.idProduct));
c8846970
CL		 2151 umidi->error_timer.function = snd_usbmidi_error_timer;
2152 umidi->error_timer.data = (unsigned long)umidi;
1da177e4
LT		 2153
2154 /* detect the endpoint(s) to use */
2155 memset(endpoints, 0, sizeof(endpoints));
d1bda045
CL		 2156 switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) {
2157 case QUIRK_MIDI_STANDARD_INTERFACE:
1da177e4 2158 err = snd_usbmidi_get_ms_info(umidi, endpoints);
d82af9f9 2159 if (umidi->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */
d05cc104
CL		 2160 umidi->usb_protocol_ops =
2161 &snd_usbmidi_maudio_broken_running_status_ops;
d1bda045 2162 break;
030a07e4
KW		 2163 case QUIRK_MIDI_US122L:
2164 umidi->usb_protocol_ops = &snd_usbmidi_122l_ops;
2165 /* fall through */
d1bda045
CL		 2166 case QUIRK_MIDI_FIXED_ENDPOINT:
2167 memcpy(&endpoints[0], quirk->data,
86e07d34 2168 sizeof(struct snd_usb_midi_endpoint_info));
d1bda045
CL		 2169 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
2170 break;
2171 case QUIRK_MIDI_YAMAHA:
2172 err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]);
2173 break;
2174 case QUIRK_MIDI_MIDIMAN:
2175 umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
2176 memcpy(&endpoints[0], quirk->data,
86e07d34 2177 sizeof(struct snd_usb_midi_endpoint_info));
d1bda045
CL		 2178 err = 0;
2179 break;
2180 case QUIRK_MIDI_NOVATION:
2181 umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
2182 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
2183 break;
c7f57216 2184 case QUIRK_MIDI_RAW_BYTES:
d1bda045 2185 umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
55de5ef9
CL		 2186 /*
2187 * Interface 1 contains isochronous endpoints, but with the same
2188 * numbers as in interface 0. Since it is interface 1 that the
2189 * USB core has most recently seen, these descriptors are now
2190 * associated with the endpoint numbers. This will foul up our
2191 * attempts to submit bulk/interrupt URBs to the endpoints in
2192 * interface 0, so we have to make sure that the USB core looks
2193 * again at interface 0 by calling usb_set_interface() on it.
2194 */
c7f57216
CL		 2195 if (umidi->usb_id == USB_ID(0x07fd, 0x0001)) /* MOTU Fastlane */
2196 usb_set_interface(umidi->dev, 0, 0);
d1bda045
CL		 2197 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
2198 break;
2199 case QUIRK_MIDI_EMAGIC:
2200 umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops;
2201 memcpy(&endpoints[0], quirk->data,
86e07d34 2202 sizeof(struct snd_usb_midi_endpoint_info));
d1bda045
CL		 2203 err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
2204 break;
cc7a59bd 2205 case QUIRK_MIDI_CME:
61870aed 2206 umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
d1bda045
CL		 2207 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
2208 break;
4434ade8
KF		 2209 case QUIRK_MIDI_AKAI:
2210 umidi->usb_protocol_ops = &snd_usbmidi_akai_ops;
2211 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
2212 /* endpoint 1 is input-only */
2213 endpoints[1].out_cables = 0;
2214 break;
1ef0e0a0
KA		 2215 case QUIRK_MIDI_FTDI:
2216 umidi->usb_protocol_ops = &snd_usbmidi_ftdi_ops;
2217
2218 /* set baud rate to 31250 (48 MHz / 16 / 96) */
2219 err = usb_control_msg(umidi->dev, usb_sndctrlpipe(umidi->dev, 0),
2220 3, 0x40, 0x60, 0, NULL, 0, 1000);
2221 if (err < 0)
2222 break;
2223
2224 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
2225 break;
d1bda045
CL		 2226 default:
2227 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
2228 err = -ENXIO;
2229 break;
1da177e4
LT		 2230 }
2231 if (err < 0) {
2232 kfree(umidi);
2233 return err;
2234 }
2235
2236 /* create rawmidi device */
2237 out_ports = 0;
2238 in_ports = 0;
2239 for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
fbc54391
AM		 2240 out_ports += hweight16(endpoints[i].out_cables);
2241 in_ports += hweight16(endpoints[i].in_cables);
1da177e4
LT		 2242 }
2243 err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports);
2244 if (err < 0) {
2245 kfree(umidi);
2246 return err;
2247 }
2248
2249 /* create endpoint/port structures */
2250 if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN)
2251 err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]);
2252 else
2253 err = snd_usbmidi_create_endpoints(umidi, endpoints);
2254 if (err < 0) {
2255 snd_usbmidi_free(umidi);
2256 return err;
2257 }
2258
d82af9f9 2259 list_add_tail(&umidi->list, midi_list);
1da177e4
LT		 2260 return 0;
2261}
2262
d82af9f9 2263EXPORT_SYMBOL(snd_usbmidi_create);
1da177e4
LT		 2264EXPORT_SYMBOL(snd_usbmidi_input_stop);
2265EXPORT_SYMBOL(snd_usbmidi_input_start);
2266EXPORT_SYMBOL(snd_usbmidi_disconnect);
kernel source for telekom puls (alcatel/mediatek)