1 | /* |
2 | * usbmidi.c - ALSA USB MIDI driver |
3 | * |
4 | * Copyright (c) 2002-2009 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 <linux/wait.h> |
49 | #include <linux/usb/audio.h> |
50 | #include <linux/usb/midi.h> |
51 | #include <linux/module.h> |
52 | |
53 | #include <sound/core.h> |
54 | #include <sound/control.h> |
55 | #include <sound/rawmidi.h> |
56 | #include <sound/asequencer.h> |
57 | #include "usbaudio.h" |
58 | #include "midi.h" |
59 | #include "power.h" |
60 | #include "helper.h" |
61 | |
62 | /* |
63 | * define this to log all USB packets |
64 | */ |
65 | /* #define DUMP_PACKETS */ |
66 | |
67 | /* |
68 | * how long to wait after some USB errors, so that hub_wq can disconnect() us |
69 | * without too many spurious errors |
70 | */ |
71 | #define ERROR_DELAY_JIFFIES (HZ / 10) |
72 | |
73 | #define OUTPUT_URBS 7 |
74 | #define INPUT_URBS 7 |
75 | |
76 | |
77 | MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>" ); |
78 | MODULE_DESCRIPTION("USB Audio/MIDI helper module" ); |
79 | MODULE_LICENSE("Dual BSD/GPL" ); |
80 | |
81 | struct snd_usb_midi_in_endpoint; |
82 | struct snd_usb_midi_out_endpoint; |
83 | struct snd_usb_midi_endpoint; |
84 | |
85 | struct usb_protocol_ops { |
86 | void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int); |
87 | void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb); |
88 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); |
89 | void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint *); |
90 | void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint *); |
91 | }; |
92 | |
93 | struct snd_usb_midi { |
94 | struct usb_device *dev; |
95 | struct snd_card *card; |
96 | struct usb_interface *iface; |
97 | const struct snd_usb_audio_quirk *quirk; |
98 | struct snd_rawmidi *rmidi; |
99 | const struct usb_protocol_ops *usb_protocol_ops; |
100 | struct list_head list; |
101 | struct timer_list error_timer; |
102 | spinlock_t disc_lock; |
103 | struct rw_semaphore disc_rwsem; |
104 | struct mutex mutex; |
105 | u32 usb_id; |
106 | int next_midi_device; |
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 | unsigned int opened[2]; |
114 | unsigned char disconnected; |
115 | unsigned char input_running; |
116 | |
117 | struct snd_kcontrol *roland_load_ctl; |
118 | }; |
119 | |
120 | struct snd_usb_midi_out_endpoint { |
121 | struct snd_usb_midi *umidi; |
122 | struct out_urb_context { |
123 | struct urb *urb; |
124 | struct snd_usb_midi_out_endpoint *ep; |
125 | } urbs[OUTPUT_URBS]; |
126 | unsigned int active_urbs; |
127 | unsigned int drain_urbs; |
128 | int max_transfer; /* size of urb buffer */ |
129 | struct work_struct work; |
130 | unsigned int next_urb; |
131 | spinlock_t buffer_lock; |
132 | |
133 | struct usbmidi_out_port { |
134 | struct snd_usb_midi_out_endpoint *ep; |
135 | struct snd_rawmidi_substream *substream; |
136 | int active; |
137 | uint8_t cable; /* cable number << 4 */ |
138 | uint8_t state; |
139 | #define STATE_UNKNOWN 0 |
140 | #define STATE_1PARAM 1 |
141 | #define STATE_2PARAM_1 2 |
142 | #define STATE_2PARAM_2 3 |
143 | #define STATE_SYSEX_0 4 |
144 | #define STATE_SYSEX_1 5 |
145 | #define STATE_SYSEX_2 6 |
146 | uint8_t data[2]; |
147 | } ports[0x10]; |
148 | int current_port; |
149 | |
150 | wait_queue_head_t drain_wait; |
151 | }; |
152 | |
153 | struct snd_usb_midi_in_endpoint { |
154 | struct snd_usb_midi *umidi; |
155 | struct urb *urbs[INPUT_URBS]; |
156 | struct usbmidi_in_port { |
157 | struct snd_rawmidi_substream *substream; |
158 | u8 running_status_length; |
159 | } ports[0x10]; |
160 | u8 seen_f5; |
161 | bool in_sysex; |
162 | u8 last_cin; |
163 | u8 error_resubmit; |
164 | int current_port; |
165 | }; |
166 | |
167 | static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint *ep); |
168 | |
169 | static const uint8_t snd_usbmidi_cin_length[] = { |
170 | 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 |
171 | }; |
172 | |
173 | /* |
174 | * Submits the URB, with error handling. |
175 | */ |
176 | static int snd_usbmidi_submit_urb(struct urb *urb, gfp_t flags) |
177 | { |
178 | int err = usb_submit_urb(urb, mem_flags: flags); |
179 | if (err < 0 && err != -ENODEV) |
180 | dev_err(&urb->dev->dev, "usb_submit_urb: %d\n" , err); |
181 | return err; |
182 | } |
183 | |
184 | /* |
185 | * Error handling for URB completion functions. |
186 | */ |
187 | static int snd_usbmidi_urb_error(const struct urb *urb) |
188 | { |
189 | switch (urb->status) { |
190 | /* manually unlinked, or device gone */ |
191 | case -ENOENT: |
192 | case -ECONNRESET: |
193 | case -ESHUTDOWN: |
194 | case -ENODEV: |
195 | return -ENODEV; |
196 | /* errors that might occur during unplugging */ |
197 | case -EPROTO: |
198 | case -ETIME: |
199 | case -EILSEQ: |
200 | return -EIO; |
201 | default: |
202 | dev_err(&urb->dev->dev, "urb status %d\n" , urb->status); |
203 | return 0; /* continue */ |
204 | } |
205 | } |
206 | |
207 | /* |
208 | * Receives a chunk of MIDI data. |
209 | */ |
210 | static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint *ep, |
211 | int portidx, uint8_t *data, int length) |
212 | { |
213 | struct usbmidi_in_port *port = &ep->ports[portidx]; |
214 | |
215 | if (!port->substream) { |
216 | dev_dbg(&ep->umidi->dev->dev, "unexpected port %d!\n" , portidx); |
217 | return; |
218 | } |
219 | if (!test_bit(port->substream->number, &ep->umidi->input_triggered)) |
220 | return; |
221 | snd_rawmidi_receive(substream: port->substream, buffer: data, count: length); |
222 | } |
223 | |
224 | #ifdef DUMP_PACKETS |
225 | static void dump_urb(const char *type, const u8 *data, int length) |
226 | { |
227 | snd_printk(KERN_DEBUG "%s packet: [" , type); |
228 | for (; length > 0; ++data, --length) |
229 | printk(KERN_CONT " %02x" , *data); |
230 | printk(KERN_CONT " ]\n" ); |
231 | } |
232 | #else |
233 | #define dump_urb(type, data, length) /* nothing */ |
234 | #endif |
235 | |
236 | /* |
237 | * Processes the data read from the device. |
238 | */ |
239 | static void snd_usbmidi_in_urb_complete(struct urb *urb) |
240 | { |
241 | struct snd_usb_midi_in_endpoint *ep = urb->context; |
242 | |
243 | if (urb->status == 0) { |
244 | dump_urb("received" , urb->transfer_buffer, urb->actual_length); |
245 | ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, |
246 | urb->actual_length); |
247 | } else { |
248 | int err = snd_usbmidi_urb_error(urb); |
249 | if (err < 0) { |
250 | if (err != -ENODEV) { |
251 | ep->error_resubmit = 1; |
252 | mod_timer(timer: &ep->umidi->error_timer, |
253 | expires: jiffies + ERROR_DELAY_JIFFIES); |
254 | } |
255 | return; |
256 | } |
257 | } |
258 | |
259 | urb->dev = ep->umidi->dev; |
260 | snd_usbmidi_submit_urb(urb, GFP_ATOMIC); |
261 | } |
262 | |
263 | static void snd_usbmidi_out_urb_complete(struct urb *urb) |
264 | { |
265 | struct out_urb_context *context = urb->context; |
266 | struct snd_usb_midi_out_endpoint *ep = context->ep; |
267 | unsigned int urb_index; |
268 | unsigned long flags; |
269 | |
270 | spin_lock_irqsave(&ep->buffer_lock, flags); |
271 | urb_index = context - ep->urbs; |
272 | ep->active_urbs &= ~(1 << urb_index); |
273 | if (unlikely(ep->drain_urbs)) { |
274 | ep->drain_urbs &= ~(1 << urb_index); |
275 | wake_up(&ep->drain_wait); |
276 | } |
277 | spin_unlock_irqrestore(lock: &ep->buffer_lock, flags); |
278 | if (urb->status < 0) { |
279 | int err = snd_usbmidi_urb_error(urb); |
280 | if (err < 0) { |
281 | if (err != -ENODEV) |
282 | mod_timer(timer: &ep->umidi->error_timer, |
283 | expires: jiffies + ERROR_DELAY_JIFFIES); |
284 | return; |
285 | } |
286 | } |
287 | snd_usbmidi_do_output(ep); |
288 | } |
289 | |
290 | /* |
291 | * This is called when some data should be transferred to the device |
292 | * (from one or more substreams). |
293 | */ |
294 | static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint *ep) |
295 | { |
296 | unsigned int urb_index; |
297 | struct urb *urb; |
298 | unsigned long flags; |
299 | |
300 | spin_lock_irqsave(&ep->buffer_lock, flags); |
301 | if (ep->umidi->disconnected) { |
302 | spin_unlock_irqrestore(lock: &ep->buffer_lock, flags); |
303 | return; |
304 | } |
305 | |
306 | urb_index = ep->next_urb; |
307 | for (;;) { |
308 | if (!(ep->active_urbs & (1 << urb_index))) { |
309 | urb = ep->urbs[urb_index].urb; |
310 | urb->transfer_buffer_length = 0; |
311 | ep->umidi->usb_protocol_ops->output(ep, urb); |
312 | if (urb->transfer_buffer_length == 0) |
313 | break; |
314 | |
315 | dump_urb("sending" , urb->transfer_buffer, |
316 | urb->transfer_buffer_length); |
317 | urb->dev = ep->umidi->dev; |
318 | if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0) |
319 | break; |
320 | ep->active_urbs |= 1 << urb_index; |
321 | } |
322 | if (++urb_index >= OUTPUT_URBS) |
323 | urb_index = 0; |
324 | if (urb_index == ep->next_urb) |
325 | break; |
326 | } |
327 | ep->next_urb = urb_index; |
328 | spin_unlock_irqrestore(lock: &ep->buffer_lock, flags); |
329 | } |
330 | |
331 | static void snd_usbmidi_out_work(struct work_struct *work) |
332 | { |
333 | struct snd_usb_midi_out_endpoint *ep = |
334 | container_of(work, struct snd_usb_midi_out_endpoint, work); |
335 | |
336 | snd_usbmidi_do_output(ep); |
337 | } |
338 | |
339 | /* called after transfers had been interrupted due to some USB error */ |
340 | static void snd_usbmidi_error_timer(struct timer_list *t) |
341 | { |
342 | struct snd_usb_midi *umidi = from_timer(umidi, t, error_timer); |
343 | unsigned int i, j; |
344 | |
345 | spin_lock(lock: &umidi->disc_lock); |
346 | if (umidi->disconnected) { |
347 | spin_unlock(lock: &umidi->disc_lock); |
348 | return; |
349 | } |
350 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
351 | struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in; |
352 | if (in && in->error_resubmit) { |
353 | in->error_resubmit = 0; |
354 | for (j = 0; j < INPUT_URBS; ++j) { |
355 | if (atomic_read(v: &in->urbs[j]->use_count)) |
356 | continue; |
357 | in->urbs[j]->dev = umidi->dev; |
358 | snd_usbmidi_submit_urb(urb: in->urbs[j], GFP_ATOMIC); |
359 | } |
360 | } |
361 | if (umidi->endpoints[i].out) |
362 | snd_usbmidi_do_output(ep: umidi->endpoints[i].out); |
363 | } |
364 | spin_unlock(lock: &umidi->disc_lock); |
365 | } |
366 | |
367 | /* helper function to send static data that may not DMA-able */ |
368 | static int send_bulk_static_data(struct snd_usb_midi_out_endpoint *ep, |
369 | const void *data, int len) |
370 | { |
371 | int err = 0; |
372 | void *buf = kmemdup(p: data, size: len, GFP_KERNEL); |
373 | if (!buf) |
374 | return -ENOMEM; |
375 | dump_urb("sending" , buf, len); |
376 | if (ep->urbs[0].urb) |
377 | err = usb_bulk_msg(usb_dev: ep->umidi->dev, pipe: ep->urbs[0].urb->pipe, |
378 | data: buf, len, NULL, timeout: 250); |
379 | kfree(objp: buf); |
380 | return err; |
381 | } |
382 | |
383 | /* |
384 | * Standard USB MIDI protocol: see the spec. |
385 | * Midiman protocol: like the standard protocol, but the control byte is the |
386 | * fourth byte in each packet, and uses length instead of CIN. |
387 | */ |
388 | |
389 | static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint *ep, |
390 | uint8_t *buffer, int buffer_length) |
391 | { |
392 | int i; |
393 | |
394 | for (i = 0; i + 3 < buffer_length; i += 4) |
395 | if (buffer[i] != 0) { |
396 | int cable = buffer[i] >> 4; |
397 | int length = snd_usbmidi_cin_length[buffer[i] & 0x0f]; |
398 | snd_usbmidi_input_data(ep, portidx: cable, data: &buffer[i + 1], |
399 | length); |
400 | } |
401 | } |
402 | |
403 | static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint *ep, |
404 | uint8_t *buffer, int buffer_length) |
405 | { |
406 | int i; |
407 | |
408 | for (i = 0; i + 3 < buffer_length; i += 4) |
409 | if (buffer[i + 3] != 0) { |
410 | int port = buffer[i + 3] >> 4; |
411 | int length = buffer[i + 3] & 3; |
412 | snd_usbmidi_input_data(ep, portidx: port, data: &buffer[i], length); |
413 | } |
414 | } |
415 | |
416 | /* |
417 | * Buggy M-Audio device: running status on input results in a packet that has |
418 | * the data bytes but not the status byte and that is marked with CIN 4. |
419 | */ |
420 | static void snd_usbmidi_maudio_broken_running_status_input( |
421 | struct snd_usb_midi_in_endpoint *ep, |
422 | uint8_t *buffer, int buffer_length) |
423 | { |
424 | int i; |
425 | |
426 | for (i = 0; i + 3 < buffer_length; i += 4) |
427 | if (buffer[i] != 0) { |
428 | int cable = buffer[i] >> 4; |
429 | u8 cin = buffer[i] & 0x0f; |
430 | struct usbmidi_in_port *port = &ep->ports[cable]; |
431 | int length; |
432 | |
433 | length = snd_usbmidi_cin_length[cin]; |
434 | if (cin == 0xf && buffer[i + 1] >= 0xf8) |
435 | ; /* realtime msg: no running status change */ |
436 | else if (cin >= 0x8 && cin <= 0xe) |
437 | /* channel msg */ |
438 | port->running_status_length = length - 1; |
439 | else if (cin == 0x4 && |
440 | port->running_status_length != 0 && |
441 | buffer[i + 1] < 0x80) |
442 | /* CIN 4 that is not a SysEx */ |
443 | length = port->running_status_length; |
444 | else |
445 | /* |
446 | * All other msgs cannot begin running status. |
447 | * (A channel msg sent as two or three CIN 0xF |
448 | * packets could in theory, but this device |
449 | * doesn't use this format.) |
450 | */ |
451 | port->running_status_length = 0; |
452 | snd_usbmidi_input_data(ep, portidx: cable, data: &buffer[i + 1], |
453 | length); |
454 | } |
455 | } |
456 | |
457 | /* |
458 | * QinHeng CH345 is buggy: every second packet inside a SysEx has not CIN 4 |
459 | * but the previously seen CIN, but still with three data bytes. |
460 | */ |
461 | static void ch345_broken_sysex_input(struct snd_usb_midi_in_endpoint *ep, |
462 | uint8_t *buffer, int buffer_length) |
463 | { |
464 | unsigned int i, cin, length; |
465 | |
466 | for (i = 0; i + 3 < buffer_length; i += 4) { |
467 | if (buffer[i] == 0 && i > 0) |
468 | break; |
469 | cin = buffer[i] & 0x0f; |
470 | if (ep->in_sysex && |
471 | cin == ep->last_cin && |
472 | (buffer[i + 1 + (cin == 0x6)] & 0x80) == 0) |
473 | cin = 0x4; |
474 | #if 0 |
475 | if (buffer[i + 1] == 0x90) { |
476 | /* |
477 | * Either a corrupted running status or a real note-on |
478 | * message; impossible to detect reliably. |
479 | */ |
480 | } |
481 | #endif |
482 | length = snd_usbmidi_cin_length[cin]; |
483 | snd_usbmidi_input_data(ep, portidx: 0, data: &buffer[i + 1], length); |
484 | ep->in_sysex = cin == 0x4; |
485 | if (!ep->in_sysex) |
486 | ep->last_cin = cin; |
487 | } |
488 | } |
489 | |
490 | /* |
491 | * CME protocol: like the standard protocol, but SysEx commands are sent as a |
492 | * single USB packet preceded by a 0x0F byte. |
493 | */ |
494 | static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep, |
495 | uint8_t *buffer, int buffer_length) |
496 | { |
497 | if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f) |
498 | snd_usbmidi_standard_input(ep, buffer, buffer_length); |
499 | else |
500 | snd_usbmidi_input_data(ep, portidx: buffer[0] >> 4, |
501 | data: &buffer[1], length: buffer_length - 1); |
502 | } |
503 | |
504 | /* |
505 | * Adds one USB MIDI packet to the output buffer. |
506 | */ |
507 | static void snd_usbmidi_output_standard_packet(struct urb *urb, uint8_t p0, |
508 | uint8_t p1, uint8_t p2, |
509 | uint8_t p3) |
510 | { |
511 | |
512 | uint8_t *buf = |
513 | (uint8_t *)urb->transfer_buffer + urb->transfer_buffer_length; |
514 | buf[0] = p0; |
515 | buf[1] = p1; |
516 | buf[2] = p2; |
517 | buf[3] = p3; |
518 | urb->transfer_buffer_length += 4; |
519 | } |
520 | |
521 | /* |
522 | * Adds one Midiman packet to the output buffer. |
523 | */ |
524 | static void snd_usbmidi_output_midiman_packet(struct urb *urb, uint8_t p0, |
525 | uint8_t p1, uint8_t p2, |
526 | uint8_t p3) |
527 | { |
528 | |
529 | uint8_t *buf = |
530 | (uint8_t *)urb->transfer_buffer + urb->transfer_buffer_length; |
531 | buf[0] = p1; |
532 | buf[1] = p2; |
533 | buf[2] = p3; |
534 | buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f]; |
535 | urb->transfer_buffer_length += 4; |
536 | } |
537 | |
538 | /* |
539 | * Converts MIDI commands to USB MIDI packets. |
540 | */ |
541 | static void snd_usbmidi_transmit_byte(struct usbmidi_out_port *port, |
542 | uint8_t b, struct urb *urb) |
543 | { |
544 | uint8_t p0 = port->cable; |
545 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) = |
546 | port->ep->umidi->usb_protocol_ops->output_packet; |
547 | |
548 | if (b >= 0xf8) { |
549 | output_packet(urb, p0 | 0x0f, b, 0, 0); |
550 | } else if (b >= 0xf0) { |
551 | switch (b) { |
552 | case 0xf0: |
553 | port->data[0] = b; |
554 | port->state = STATE_SYSEX_1; |
555 | break; |
556 | case 0xf1: |
557 | case 0xf3: |
558 | port->data[0] = b; |
559 | port->state = STATE_1PARAM; |
560 | break; |
561 | case 0xf2: |
562 | port->data[0] = b; |
563 | port->state = STATE_2PARAM_1; |
564 | break; |
565 | case 0xf4: |
566 | case 0xf5: |
567 | port->state = STATE_UNKNOWN; |
568 | break; |
569 | case 0xf6: |
570 | output_packet(urb, p0 | 0x05, 0xf6, 0, 0); |
571 | port->state = STATE_UNKNOWN; |
572 | break; |
573 | case 0xf7: |
574 | switch (port->state) { |
575 | case STATE_SYSEX_0: |
576 | output_packet(urb, p0 | 0x05, 0xf7, 0, 0); |
577 | break; |
578 | case STATE_SYSEX_1: |
579 | output_packet(urb, p0 | 0x06, port->data[0], |
580 | 0xf7, 0); |
581 | break; |
582 | case STATE_SYSEX_2: |
583 | output_packet(urb, p0 | 0x07, port->data[0], |
584 | port->data[1], 0xf7); |
585 | break; |
586 | } |
587 | port->state = STATE_UNKNOWN; |
588 | break; |
589 | } |
590 | } else if (b >= 0x80) { |
591 | port->data[0] = b; |
592 | if (b >= 0xc0 && b <= 0xdf) |
593 | port->state = STATE_1PARAM; |
594 | else |
595 | port->state = STATE_2PARAM_1; |
596 | } else { /* b < 0x80 */ |
597 | switch (port->state) { |
598 | case STATE_1PARAM: |
599 | if (port->data[0] < 0xf0) { |
600 | p0 |= port->data[0] >> 4; |
601 | } else { |
602 | p0 |= 0x02; |
603 | port->state = STATE_UNKNOWN; |
604 | } |
605 | output_packet(urb, p0, port->data[0], b, 0); |
606 | break; |
607 | case STATE_2PARAM_1: |
608 | port->data[1] = b; |
609 | port->state = STATE_2PARAM_2; |
610 | break; |
611 | case STATE_2PARAM_2: |
612 | if (port->data[0] < 0xf0) { |
613 | p0 |= port->data[0] >> 4; |
614 | port->state = STATE_2PARAM_1; |
615 | } else { |
616 | p0 |= 0x03; |
617 | port->state = STATE_UNKNOWN; |
618 | } |
619 | output_packet(urb, p0, port->data[0], port->data[1], b); |
620 | break; |
621 | case STATE_SYSEX_0: |
622 | port->data[0] = b; |
623 | port->state = STATE_SYSEX_1; |
624 | break; |
625 | case STATE_SYSEX_1: |
626 | port->data[1] = b; |
627 | port->state = STATE_SYSEX_2; |
628 | break; |
629 | case STATE_SYSEX_2: |
630 | output_packet(urb, p0 | 0x04, port->data[0], |
631 | port->data[1], b); |
632 | port->state = STATE_SYSEX_0; |
633 | break; |
634 | } |
635 | } |
636 | } |
637 | |
638 | static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint *ep, |
639 | struct urb *urb) |
640 | { |
641 | int p; |
642 | |
643 | /* FIXME: lower-numbered ports can starve higher-numbered ports */ |
644 | for (p = 0; p < 0x10; ++p) { |
645 | struct usbmidi_out_port *port = &ep->ports[p]; |
646 | if (!port->active) |
647 | continue; |
648 | while (urb->transfer_buffer_length + 3 < ep->max_transfer) { |
649 | uint8_t b; |
650 | if (snd_rawmidi_transmit(substream: port->substream, buffer: &b, count: 1) != 1) { |
651 | port->active = 0; |
652 | break; |
653 | } |
654 | snd_usbmidi_transmit_byte(port, b, urb); |
655 | } |
656 | } |
657 | } |
658 | |
659 | static const struct usb_protocol_ops snd_usbmidi_standard_ops = { |
660 | .input = snd_usbmidi_standard_input, |
661 | .output = snd_usbmidi_standard_output, |
662 | .output_packet = snd_usbmidi_output_standard_packet, |
663 | }; |
664 | |
665 | static const struct usb_protocol_ops snd_usbmidi_midiman_ops = { |
666 | .input = snd_usbmidi_midiman_input, |
667 | .output = snd_usbmidi_standard_output, |
668 | .output_packet = snd_usbmidi_output_midiman_packet, |
669 | }; |
670 | |
671 | static const |
672 | struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = { |
673 | .input = snd_usbmidi_maudio_broken_running_status_input, |
674 | .output = snd_usbmidi_standard_output, |
675 | .output_packet = snd_usbmidi_output_standard_packet, |
676 | }; |
677 | |
678 | static const struct usb_protocol_ops snd_usbmidi_cme_ops = { |
679 | .input = snd_usbmidi_cme_input, |
680 | .output = snd_usbmidi_standard_output, |
681 | .output_packet = snd_usbmidi_output_standard_packet, |
682 | }; |
683 | |
684 | static const struct usb_protocol_ops snd_usbmidi_ch345_broken_sysex_ops = { |
685 | .input = ch345_broken_sysex_input, |
686 | .output = snd_usbmidi_standard_output, |
687 | .output_packet = snd_usbmidi_output_standard_packet, |
688 | }; |
689 | |
690 | /* |
691 | * AKAI MPD16 protocol: |
692 | * |
693 | * For control port (endpoint 1): |
694 | * ============================== |
695 | * One or more chunks consisting of first byte of (0x10 | msg_len) and then a |
696 | * SysEx message (msg_len=9 bytes long). |
697 | * |
698 | * For data port (endpoint 2): |
699 | * =========================== |
700 | * One or more chunks consisting of first byte of (0x20 | msg_len) and then a |
701 | * MIDI message (msg_len bytes long) |
702 | * |
703 | * Messages sent: Active Sense, Note On, Poly Pressure, Control Change. |
704 | */ |
705 | static void snd_usbmidi_akai_input(struct snd_usb_midi_in_endpoint *ep, |
706 | uint8_t *buffer, int buffer_length) |
707 | { |
708 | unsigned int pos = 0; |
709 | unsigned int len = (unsigned int)buffer_length; |
710 | while (pos < len) { |
711 | unsigned int port = (buffer[pos] >> 4) - 1; |
712 | unsigned int msg_len = buffer[pos] & 0x0f; |
713 | pos++; |
714 | if (pos + msg_len <= len && port < 2) |
715 | snd_usbmidi_input_data(ep, portidx: 0, data: &buffer[pos], length: msg_len); |
716 | pos += msg_len; |
717 | } |
718 | } |
719 | |
720 | #define MAX_AKAI_SYSEX_LEN 9 |
721 | |
722 | static void snd_usbmidi_akai_output(struct snd_usb_midi_out_endpoint *ep, |
723 | struct urb *urb) |
724 | { |
725 | uint8_t *msg; |
726 | int pos, end, count, buf_end; |
727 | uint8_t tmp[MAX_AKAI_SYSEX_LEN]; |
728 | struct snd_rawmidi_substream *substream = ep->ports[0].substream; |
729 | |
730 | if (!ep->ports[0].active) |
731 | return; |
732 | |
733 | msg = urb->transfer_buffer + urb->transfer_buffer_length; |
734 | buf_end = ep->max_transfer - MAX_AKAI_SYSEX_LEN - 1; |
735 | |
736 | /* only try adding more data when there's space for at least 1 SysEx */ |
737 | while (urb->transfer_buffer_length < buf_end) { |
738 | count = snd_rawmidi_transmit_peek(substream, |
739 | buffer: tmp, MAX_AKAI_SYSEX_LEN); |
740 | if (!count) { |
741 | ep->ports[0].active = 0; |
742 | return; |
743 | } |
744 | /* try to skip non-SysEx data */ |
745 | for (pos = 0; pos < count && tmp[pos] != 0xF0; pos++) |
746 | ; |
747 | |
748 | if (pos > 0) { |
749 | snd_rawmidi_transmit_ack(substream, count: pos); |
750 | continue; |
751 | } |
752 | |
753 | /* look for the start or end marker */ |
754 | for (end = 1; end < count && tmp[end] < 0xF0; end++) |
755 | ; |
756 | |
757 | /* next SysEx started before the end of current one */ |
758 | if (end < count && tmp[end] == 0xF0) { |
759 | /* it's incomplete - drop it */ |
760 | snd_rawmidi_transmit_ack(substream, count: end); |
761 | continue; |
762 | } |
763 | /* SysEx complete */ |
764 | if (end < count && tmp[end] == 0xF7) { |
765 | /* queue it, ack it, and get the next one */ |
766 | count = end + 1; |
767 | msg[0] = 0x10 | count; |
768 | memcpy(&msg[1], tmp, count); |
769 | snd_rawmidi_transmit_ack(substream, count); |
770 | urb->transfer_buffer_length += count + 1; |
771 | msg += count + 1; |
772 | continue; |
773 | } |
774 | /* less than 9 bytes and no end byte - wait for more */ |
775 | if (count < MAX_AKAI_SYSEX_LEN) { |
776 | ep->ports[0].active = 0; |
777 | return; |
778 | } |
779 | /* 9 bytes and no end marker in sight - malformed, skip it */ |
780 | snd_rawmidi_transmit_ack(substream, count); |
781 | } |
782 | } |
783 | |
784 | static const struct usb_protocol_ops snd_usbmidi_akai_ops = { |
785 | .input = snd_usbmidi_akai_input, |
786 | .output = snd_usbmidi_akai_output, |
787 | }; |
788 | |
789 | /* |
790 | * Novation USB MIDI protocol: number of data bytes is in the first byte |
791 | * (when receiving) (+1!) or in the second byte (when sending); data begins |
792 | * at the third byte. |
793 | */ |
794 | |
795 | static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint *ep, |
796 | uint8_t *buffer, int buffer_length) |
797 | { |
798 | if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1) |
799 | return; |
800 | snd_usbmidi_input_data(ep, portidx: 0, data: &buffer[2], length: buffer[0] - 1); |
801 | } |
802 | |
803 | static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint *ep, |
804 | struct urb *urb) |
805 | { |
806 | uint8_t *transfer_buffer; |
807 | int count; |
808 | |
809 | if (!ep->ports[0].active) |
810 | return; |
811 | transfer_buffer = urb->transfer_buffer; |
812 | count = snd_rawmidi_transmit(substream: ep->ports[0].substream, |
813 | buffer: &transfer_buffer[2], |
814 | count: ep->max_transfer - 2); |
815 | if (count < 1) { |
816 | ep->ports[0].active = 0; |
817 | return; |
818 | } |
819 | transfer_buffer[0] = 0; |
820 | transfer_buffer[1] = count; |
821 | urb->transfer_buffer_length = 2 + count; |
822 | } |
823 | |
824 | static const struct usb_protocol_ops snd_usbmidi_novation_ops = { |
825 | .input = snd_usbmidi_novation_input, |
826 | .output = snd_usbmidi_novation_output, |
827 | }; |
828 | |
829 | /* |
830 | * "raw" protocol: just move raw MIDI bytes from/to the endpoint |
831 | */ |
832 | |
833 | static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint *ep, |
834 | uint8_t *buffer, int buffer_length) |
835 | { |
836 | snd_usbmidi_input_data(ep, portidx: 0, data: buffer, length: buffer_length); |
837 | } |
838 | |
839 | static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint *ep, |
840 | struct urb *urb) |
841 | { |
842 | int count; |
843 | |
844 | if (!ep->ports[0].active) |
845 | return; |
846 | count = snd_rawmidi_transmit(substream: ep->ports[0].substream, |
847 | buffer: urb->transfer_buffer, |
848 | count: ep->max_transfer); |
849 | if (count < 1) { |
850 | ep->ports[0].active = 0; |
851 | return; |
852 | } |
853 | urb->transfer_buffer_length = count; |
854 | } |
855 | |
856 | static const struct usb_protocol_ops snd_usbmidi_raw_ops = { |
857 | .input = snd_usbmidi_raw_input, |
858 | .output = snd_usbmidi_raw_output, |
859 | }; |
860 | |
861 | /* |
862 | * FTDI protocol: raw MIDI bytes, but input packets have two modem status bytes. |
863 | */ |
864 | |
865 | static void snd_usbmidi_ftdi_input(struct snd_usb_midi_in_endpoint *ep, |
866 | uint8_t *buffer, int buffer_length) |
867 | { |
868 | if (buffer_length > 2) |
869 | snd_usbmidi_input_data(ep, portidx: 0, data: buffer + 2, length: buffer_length - 2); |
870 | } |
871 | |
872 | static const struct usb_protocol_ops snd_usbmidi_ftdi_ops = { |
873 | .input = snd_usbmidi_ftdi_input, |
874 | .output = snd_usbmidi_raw_output, |
875 | }; |
876 | |
877 | static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep, |
878 | uint8_t *buffer, int buffer_length) |
879 | { |
880 | if (buffer_length != 9) |
881 | return; |
882 | buffer_length = 8; |
883 | while (buffer_length && buffer[buffer_length - 1] == 0xFD) |
884 | buffer_length--; |
885 | if (buffer_length) |
886 | snd_usbmidi_input_data(ep, portidx: 0, data: buffer, length: buffer_length); |
887 | } |
888 | |
889 | static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep, |
890 | struct urb *urb) |
891 | { |
892 | int count; |
893 | |
894 | if (!ep->ports[0].active) |
895 | return; |
896 | switch (snd_usb_get_speed(ep->umidi->dev)) { |
897 | case USB_SPEED_HIGH: |
898 | case USB_SPEED_SUPER: |
899 | case USB_SPEED_SUPER_PLUS: |
900 | count = 1; |
901 | break; |
902 | default: |
903 | count = 2; |
904 | } |
905 | count = snd_rawmidi_transmit(substream: ep->ports[0].substream, |
906 | buffer: urb->transfer_buffer, |
907 | count); |
908 | if (count < 1) { |
909 | ep->ports[0].active = 0; |
910 | return; |
911 | } |
912 | |
913 | memset(urb->transfer_buffer + count, 0xFD, ep->max_transfer - count); |
914 | urb->transfer_buffer_length = ep->max_transfer; |
915 | } |
916 | |
917 | static const struct usb_protocol_ops snd_usbmidi_122l_ops = { |
918 | .input = snd_usbmidi_us122l_input, |
919 | .output = snd_usbmidi_us122l_output, |
920 | }; |
921 | |
922 | /* |
923 | * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching. |
924 | */ |
925 | |
926 | static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint *ep) |
927 | { |
928 | static const u8 init_data[] = { |
929 | /* initialization magic: "get version" */ |
930 | 0xf0, |
931 | 0x00, 0x20, 0x31, /* Emagic */ |
932 | 0x64, /* Unitor8 */ |
933 | 0x0b, /* version number request */ |
934 | 0x00, /* command version */ |
935 | 0x00, /* EEPROM, box 0 */ |
936 | 0xf7 |
937 | }; |
938 | send_bulk_static_data(ep, data: init_data, len: sizeof(init_data)); |
939 | /* while we're at it, pour on more magic */ |
940 | send_bulk_static_data(ep, data: init_data, len: sizeof(init_data)); |
941 | } |
942 | |
943 | static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint *ep) |
944 | { |
945 | static const u8 finish_data[] = { |
946 | /* switch to patch mode with last preset */ |
947 | 0xf0, |
948 | 0x00, 0x20, 0x31, /* Emagic */ |
949 | 0x64, /* Unitor8 */ |
950 | 0x10, /* patch switch command */ |
951 | 0x00, /* command version */ |
952 | 0x7f, /* to all boxes */ |
953 | 0x40, /* last preset in EEPROM */ |
954 | 0xf7 |
955 | }; |
956 | send_bulk_static_data(ep, data: finish_data, len: sizeof(finish_data)); |
957 | } |
958 | |
959 | static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint *ep, |
960 | uint8_t *buffer, int buffer_length) |
961 | { |
962 | int i; |
963 | |
964 | /* FF indicates end of valid data */ |
965 | for (i = 0; i < buffer_length; ++i) |
966 | if (buffer[i] == 0xff) { |
967 | buffer_length = i; |
968 | break; |
969 | } |
970 | |
971 | /* handle F5 at end of last buffer */ |
972 | if (ep->seen_f5) |
973 | goto switch_port; |
974 | |
975 | while (buffer_length > 0) { |
976 | /* determine size of data until next F5 */ |
977 | for (i = 0; i < buffer_length; ++i) |
978 | if (buffer[i] == 0xf5) |
979 | break; |
980 | snd_usbmidi_input_data(ep, portidx: ep->current_port, data: buffer, length: i); |
981 | buffer += i; |
982 | buffer_length -= i; |
983 | |
984 | if (buffer_length <= 0) |
985 | break; |
986 | /* assert(buffer[0] == 0xf5); */ |
987 | ep->seen_f5 = 1; |
988 | ++buffer; |
989 | --buffer_length; |
990 | |
991 | switch_port: |
992 | if (buffer_length <= 0) |
993 | break; |
994 | if (buffer[0] < 0x80) { |
995 | ep->current_port = (buffer[0] - 1) & 15; |
996 | ++buffer; |
997 | --buffer_length; |
998 | } |
999 | ep->seen_f5 = 0; |
1000 | } |
1001 | } |
1002 | |
1003 | static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint *ep, |
1004 | struct urb *urb) |
1005 | { |
1006 | int port0 = ep->current_port; |
1007 | uint8_t *buf = urb->transfer_buffer; |
1008 | int buf_free = ep->max_transfer; |
1009 | int length, i; |
1010 | |
1011 | for (i = 0; i < 0x10; ++i) { |
1012 | /* round-robin, starting at the last current port */ |
1013 | int portnum = (port0 + i) & 15; |
1014 | struct usbmidi_out_port *port = &ep->ports[portnum]; |
1015 | |
1016 | if (!port->active) |
1017 | continue; |
1018 | if (snd_rawmidi_transmit_peek(substream: port->substream, buffer: buf, count: 1) != 1) { |
1019 | port->active = 0; |
1020 | continue; |
1021 | } |
1022 | |
1023 | if (portnum != ep->current_port) { |
1024 | if (buf_free < 2) |
1025 | break; |
1026 | ep->current_port = portnum; |
1027 | buf[0] = 0xf5; |
1028 | buf[1] = (portnum + 1) & 15; |
1029 | buf += 2; |
1030 | buf_free -= 2; |
1031 | } |
1032 | |
1033 | if (buf_free < 1) |
1034 | break; |
1035 | length = snd_rawmidi_transmit(substream: port->substream, buffer: buf, count: buf_free); |
1036 | if (length > 0) { |
1037 | buf += length; |
1038 | buf_free -= length; |
1039 | if (buf_free < 1) |
1040 | break; |
1041 | } |
1042 | } |
1043 | if (buf_free < ep->max_transfer && buf_free > 0) { |
1044 | *buf = 0xff; |
1045 | --buf_free; |
1046 | } |
1047 | urb->transfer_buffer_length = ep->max_transfer - buf_free; |
1048 | } |
1049 | |
1050 | static const struct usb_protocol_ops snd_usbmidi_emagic_ops = { |
1051 | .input = snd_usbmidi_emagic_input, |
1052 | .output = snd_usbmidi_emagic_output, |
1053 | .init_out_endpoint = snd_usbmidi_emagic_init_out, |
1054 | .finish_out_endpoint = snd_usbmidi_emagic_finish_out, |
1055 | }; |
1056 | |
1057 | |
1058 | static void update_roland_altsetting(struct snd_usb_midi *umidi) |
1059 | { |
1060 | struct usb_interface *intf; |
1061 | struct usb_host_interface *hostif; |
1062 | struct usb_interface_descriptor *intfd; |
1063 | int is_light_load; |
1064 | |
1065 | intf = umidi->iface; |
1066 | is_light_load = intf->cur_altsetting != intf->altsetting; |
1067 | if (umidi->roland_load_ctl->private_value == is_light_load) |
1068 | return; |
1069 | hostif = &intf->altsetting[umidi->roland_load_ctl->private_value]; |
1070 | intfd = get_iface_desc(hostif); |
1071 | snd_usbmidi_input_stop(p: &umidi->list); |
1072 | usb_set_interface(dev: umidi->dev, ifnum: intfd->bInterfaceNumber, |
1073 | alternate: intfd->bAlternateSetting); |
1074 | snd_usbmidi_input_start(p: &umidi->list); |
1075 | } |
1076 | |
1077 | static int substream_open(struct snd_rawmidi_substream *substream, int dir, |
1078 | int open) |
1079 | { |
1080 | struct snd_usb_midi *umidi = substream->rmidi->private_data; |
1081 | struct snd_kcontrol *ctl; |
1082 | |
1083 | down_read(sem: &umidi->disc_rwsem); |
1084 | if (umidi->disconnected) { |
1085 | up_read(sem: &umidi->disc_rwsem); |
1086 | return open ? -ENODEV : 0; |
1087 | } |
1088 | |
1089 | mutex_lock(&umidi->mutex); |
1090 | if (open) { |
1091 | if (!umidi->opened[0] && !umidi->opened[1]) { |
1092 | if (umidi->roland_load_ctl) { |
1093 | ctl = umidi->roland_load_ctl; |
1094 | ctl->vd[0].access |= |
1095 | SNDRV_CTL_ELEM_ACCESS_INACTIVE; |
1096 | snd_ctl_notify(card: umidi->card, |
1097 | SNDRV_CTL_EVENT_MASK_INFO, id: &ctl->id); |
1098 | update_roland_altsetting(umidi); |
1099 | } |
1100 | } |
1101 | umidi->opened[dir]++; |
1102 | if (umidi->opened[1]) |
1103 | snd_usbmidi_input_start(p: &umidi->list); |
1104 | } else { |
1105 | umidi->opened[dir]--; |
1106 | if (!umidi->opened[1]) |
1107 | snd_usbmidi_input_stop(p: &umidi->list); |
1108 | if (!umidi->opened[0] && !umidi->opened[1]) { |
1109 | if (umidi->roland_load_ctl) { |
1110 | ctl = umidi->roland_load_ctl; |
1111 | ctl->vd[0].access &= |
1112 | ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; |
1113 | snd_ctl_notify(card: umidi->card, |
1114 | SNDRV_CTL_EVENT_MASK_INFO, id: &ctl->id); |
1115 | } |
1116 | } |
1117 | } |
1118 | mutex_unlock(lock: &umidi->mutex); |
1119 | up_read(sem: &umidi->disc_rwsem); |
1120 | return 0; |
1121 | } |
1122 | |
1123 | static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream) |
1124 | { |
1125 | struct snd_usb_midi *umidi = substream->rmidi->private_data; |
1126 | struct usbmidi_out_port *port = NULL; |
1127 | int i, j; |
1128 | |
1129 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) |
1130 | if (umidi->endpoints[i].out) |
1131 | for (j = 0; j < 0x10; ++j) |
1132 | if (umidi->endpoints[i].out->ports[j].substream == substream) { |
1133 | port = &umidi->endpoints[i].out->ports[j]; |
1134 | break; |
1135 | } |
1136 | if (!port) |
1137 | return -ENXIO; |
1138 | |
1139 | substream->runtime->private_data = port; |
1140 | port->state = STATE_UNKNOWN; |
1141 | return substream_open(substream, dir: 0, open: 1); |
1142 | } |
1143 | |
1144 | static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream) |
1145 | { |
1146 | struct usbmidi_out_port *port = substream->runtime->private_data; |
1147 | |
1148 | cancel_work_sync(work: &port->ep->work); |
1149 | return substream_open(substream, dir: 0, open: 0); |
1150 | } |
1151 | |
1152 | static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, |
1153 | int up) |
1154 | { |
1155 | struct usbmidi_out_port *port = |
1156 | (struct usbmidi_out_port *)substream->runtime->private_data; |
1157 | |
1158 | port->active = up; |
1159 | if (up) { |
1160 | if (port->ep->umidi->disconnected) { |
1161 | /* gobble up remaining bytes to prevent wait in |
1162 | * snd_rawmidi_drain_output */ |
1163 | snd_rawmidi_proceed(substream); |
1164 | return; |
1165 | } |
1166 | queue_work(wq: system_highpri_wq, work: &port->ep->work); |
1167 | } |
1168 | } |
1169 | |
1170 | static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream) |
1171 | { |
1172 | struct usbmidi_out_port *port = substream->runtime->private_data; |
1173 | struct snd_usb_midi_out_endpoint *ep = port->ep; |
1174 | unsigned int drain_urbs; |
1175 | DEFINE_WAIT(wait); |
1176 | long timeout = msecs_to_jiffies(m: 50); |
1177 | |
1178 | if (ep->umidi->disconnected) |
1179 | return; |
1180 | /* |
1181 | * The substream buffer is empty, but some data might still be in the |
1182 | * currently active URBs, so we have to wait for those to complete. |
1183 | */ |
1184 | spin_lock_irq(lock: &ep->buffer_lock); |
1185 | drain_urbs = ep->active_urbs; |
1186 | if (drain_urbs) { |
1187 | ep->drain_urbs |= drain_urbs; |
1188 | do { |
1189 | prepare_to_wait(wq_head: &ep->drain_wait, wq_entry: &wait, |
1190 | TASK_UNINTERRUPTIBLE); |
1191 | spin_unlock_irq(lock: &ep->buffer_lock); |
1192 | timeout = schedule_timeout(timeout); |
1193 | spin_lock_irq(lock: &ep->buffer_lock); |
1194 | drain_urbs &= ep->drain_urbs; |
1195 | } while (drain_urbs && timeout); |
1196 | finish_wait(wq_head: &ep->drain_wait, wq_entry: &wait); |
1197 | } |
1198 | port->active = 0; |
1199 | spin_unlock_irq(lock: &ep->buffer_lock); |
1200 | } |
1201 | |
1202 | static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream) |
1203 | { |
1204 | return substream_open(substream, dir: 1, open: 1); |
1205 | } |
1206 | |
1207 | static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream) |
1208 | { |
1209 | return substream_open(substream, dir: 1, open: 0); |
1210 | } |
1211 | |
1212 | static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, |
1213 | int up) |
1214 | { |
1215 | struct snd_usb_midi *umidi = substream->rmidi->private_data; |
1216 | |
1217 | if (up) |
1218 | set_bit(nr: substream->number, addr: &umidi->input_triggered); |
1219 | else |
1220 | clear_bit(nr: substream->number, addr: &umidi->input_triggered); |
1221 | } |
1222 | |
1223 | static const struct snd_rawmidi_ops snd_usbmidi_output_ops = { |
1224 | .open = snd_usbmidi_output_open, |
1225 | .close = snd_usbmidi_output_close, |
1226 | .trigger = snd_usbmidi_output_trigger, |
1227 | .drain = snd_usbmidi_output_drain, |
1228 | }; |
1229 | |
1230 | static const struct snd_rawmidi_ops snd_usbmidi_input_ops = { |
1231 | .open = snd_usbmidi_input_open, |
1232 | .close = snd_usbmidi_input_close, |
1233 | .trigger = snd_usbmidi_input_trigger |
1234 | }; |
1235 | |
1236 | static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb, |
1237 | unsigned int buffer_length) |
1238 | { |
1239 | usb_free_coherent(dev: umidi->dev, size: buffer_length, |
1240 | addr: urb->transfer_buffer, dma: urb->transfer_dma); |
1241 | usb_free_urb(urb); |
1242 | } |
1243 | |
1244 | /* |
1245 | * Frees an input endpoint. |
1246 | * May be called when ep hasn't been initialized completely. |
1247 | */ |
1248 | static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint *ep) |
1249 | { |
1250 | unsigned int i; |
1251 | |
1252 | for (i = 0; i < INPUT_URBS; ++i) |
1253 | if (ep->urbs[i]) |
1254 | free_urb_and_buffer(umidi: ep->umidi, urb: ep->urbs[i], |
1255 | buffer_length: ep->urbs[i]->transfer_buffer_length); |
1256 | kfree(objp: ep); |
1257 | } |
1258 | |
1259 | /* |
1260 | * Creates an input endpoint. |
1261 | */ |
1262 | static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi *umidi, |
1263 | struct snd_usb_midi_endpoint_info *ep_info, |
1264 | struct snd_usb_midi_endpoint *rep) |
1265 | { |
1266 | struct snd_usb_midi_in_endpoint *ep; |
1267 | void *buffer; |
1268 | unsigned int pipe; |
1269 | int length; |
1270 | unsigned int i; |
1271 | int err; |
1272 | |
1273 | rep->in = NULL; |
1274 | ep = kzalloc(size: sizeof(*ep), GFP_KERNEL); |
1275 | if (!ep) |
1276 | return -ENOMEM; |
1277 | ep->umidi = umidi; |
1278 | |
1279 | for (i = 0; i < INPUT_URBS; ++i) { |
1280 | ep->urbs[i] = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1281 | if (!ep->urbs[i]) { |
1282 | err = -ENOMEM; |
1283 | goto error; |
1284 | } |
1285 | } |
1286 | if (ep_info->in_interval) |
1287 | pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep); |
1288 | else |
1289 | pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep); |
1290 | length = usb_maxpacket(udev: umidi->dev, pipe); |
1291 | for (i = 0; i < INPUT_URBS; ++i) { |
1292 | buffer = usb_alloc_coherent(dev: umidi->dev, size: length, GFP_KERNEL, |
1293 | dma: &ep->urbs[i]->transfer_dma); |
1294 | if (!buffer) { |
1295 | err = -ENOMEM; |
1296 | goto error; |
1297 | } |
1298 | if (ep_info->in_interval) |
1299 | usb_fill_int_urb(urb: ep->urbs[i], dev: umidi->dev, |
1300 | pipe, transfer_buffer: buffer, buffer_length: length, |
1301 | complete_fn: snd_usbmidi_in_urb_complete, |
1302 | context: ep, interval: ep_info->in_interval); |
1303 | else |
1304 | usb_fill_bulk_urb(urb: ep->urbs[i], dev: umidi->dev, |
1305 | pipe, transfer_buffer: buffer, buffer_length: length, |
1306 | complete_fn: snd_usbmidi_in_urb_complete, context: ep); |
1307 | ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1308 | err = usb_urb_ep_type_check(urb: ep->urbs[i]); |
1309 | if (err < 0) { |
1310 | dev_err(&umidi->dev->dev, "invalid MIDI in EP %x\n" , |
1311 | ep_info->in_ep); |
1312 | goto error; |
1313 | } |
1314 | } |
1315 | |
1316 | rep->in = ep; |
1317 | return 0; |
1318 | |
1319 | error: |
1320 | snd_usbmidi_in_endpoint_delete(ep); |
1321 | return err; |
1322 | } |
1323 | |
1324 | /* |
1325 | * Frees an output endpoint. |
1326 | * May be called when ep hasn't been initialized completely. |
1327 | */ |
1328 | static void snd_usbmidi_out_endpoint_clear(struct snd_usb_midi_out_endpoint *ep) |
1329 | { |
1330 | unsigned int i; |
1331 | |
1332 | for (i = 0; i < OUTPUT_URBS; ++i) |
1333 | if (ep->urbs[i].urb) { |
1334 | free_urb_and_buffer(umidi: ep->umidi, urb: ep->urbs[i].urb, |
1335 | buffer_length: ep->max_transfer); |
1336 | ep->urbs[i].urb = NULL; |
1337 | } |
1338 | } |
1339 | |
1340 | static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint *ep) |
1341 | { |
1342 | snd_usbmidi_out_endpoint_clear(ep); |
1343 | kfree(objp: ep); |
1344 | } |
1345 | |
1346 | /* |
1347 | * Creates an output endpoint, and initializes output ports. |
1348 | */ |
1349 | static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi, |
1350 | struct snd_usb_midi_endpoint_info *ep_info, |
1351 | struct snd_usb_midi_endpoint *rep) |
1352 | { |
1353 | struct snd_usb_midi_out_endpoint *ep; |
1354 | unsigned int i; |
1355 | unsigned int pipe; |
1356 | void *buffer; |
1357 | int err; |
1358 | |
1359 | rep->out = NULL; |
1360 | ep = kzalloc(size: sizeof(*ep), GFP_KERNEL); |
1361 | if (!ep) |
1362 | return -ENOMEM; |
1363 | ep->umidi = umidi; |
1364 | |
1365 | for (i = 0; i < OUTPUT_URBS; ++i) { |
1366 | ep->urbs[i].urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1367 | if (!ep->urbs[i].urb) { |
1368 | err = -ENOMEM; |
1369 | goto error; |
1370 | } |
1371 | ep->urbs[i].ep = ep; |
1372 | } |
1373 | if (ep_info->out_interval) |
1374 | pipe = usb_sndintpipe(umidi->dev, ep_info->out_ep); |
1375 | else |
1376 | pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep); |
1377 | switch (umidi->usb_id) { |
1378 | default: |
1379 | ep->max_transfer = usb_maxpacket(udev: umidi->dev, pipe); |
1380 | break; |
1381 | /* |
1382 | * Various chips declare a packet size larger than 4 bytes, but |
1383 | * do not actually work with larger packets: |
1384 | */ |
1385 | case USB_ID(0x0a67, 0x5011): /* Medeli DD305 */ |
1386 | case USB_ID(0x0a92, 0x1020): /* ESI M4U */ |
1387 | case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */ |
1388 | case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */ |
1389 | case USB_ID(0x15ca, 0x1806): /* Textech USB Midi Cable */ |
1390 | case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */ |
1391 | case USB_ID(0xfc08, 0x0101): /* Unknown vendor Cable */ |
1392 | ep->max_transfer = 4; |
1393 | break; |
1394 | /* |
1395 | * Some devices only work with 9 bytes packet size: |
1396 | */ |
1397 | case USB_ID(0x0644, 0x800e): /* Tascam US-122L */ |
1398 | case USB_ID(0x0644, 0x800f): /* Tascam US-144 */ |
1399 | ep->max_transfer = 9; |
1400 | break; |
1401 | } |
1402 | for (i = 0; i < OUTPUT_URBS; ++i) { |
1403 | buffer = usb_alloc_coherent(dev: umidi->dev, |
1404 | size: ep->max_transfer, GFP_KERNEL, |
1405 | dma: &ep->urbs[i].urb->transfer_dma); |
1406 | if (!buffer) { |
1407 | err = -ENOMEM; |
1408 | goto error; |
1409 | } |
1410 | if (ep_info->out_interval) |
1411 | usb_fill_int_urb(urb: ep->urbs[i].urb, dev: umidi->dev, |
1412 | pipe, transfer_buffer: buffer, buffer_length: ep->max_transfer, |
1413 | complete_fn: snd_usbmidi_out_urb_complete, |
1414 | context: &ep->urbs[i], interval: ep_info->out_interval); |
1415 | else |
1416 | usb_fill_bulk_urb(urb: ep->urbs[i].urb, dev: umidi->dev, |
1417 | pipe, transfer_buffer: buffer, buffer_length: ep->max_transfer, |
1418 | complete_fn: snd_usbmidi_out_urb_complete, |
1419 | context: &ep->urbs[i]); |
1420 | err = usb_urb_ep_type_check(urb: ep->urbs[i].urb); |
1421 | if (err < 0) { |
1422 | dev_err(&umidi->dev->dev, "invalid MIDI out EP %x\n" , |
1423 | ep_info->out_ep); |
1424 | goto error; |
1425 | } |
1426 | ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1427 | } |
1428 | |
1429 | spin_lock_init(&ep->buffer_lock); |
1430 | INIT_WORK(&ep->work, snd_usbmidi_out_work); |
1431 | init_waitqueue_head(&ep->drain_wait); |
1432 | |
1433 | for (i = 0; i < 0x10; ++i) |
1434 | if (ep_info->out_cables & (1 << i)) { |
1435 | ep->ports[i].ep = ep; |
1436 | ep->ports[i].cable = i << 4; |
1437 | } |
1438 | |
1439 | if (umidi->usb_protocol_ops->init_out_endpoint) |
1440 | umidi->usb_protocol_ops->init_out_endpoint(ep); |
1441 | |
1442 | rep->out = ep; |
1443 | return 0; |
1444 | |
1445 | error: |
1446 | snd_usbmidi_out_endpoint_delete(ep); |
1447 | return err; |
1448 | } |
1449 | |
1450 | /* |
1451 | * Frees everything. |
1452 | */ |
1453 | static void snd_usbmidi_free(struct snd_usb_midi *umidi) |
1454 | { |
1455 | int i; |
1456 | |
1457 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1458 | struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i]; |
1459 | if (ep->out) |
1460 | snd_usbmidi_out_endpoint_delete(ep: ep->out); |
1461 | if (ep->in) |
1462 | snd_usbmidi_in_endpoint_delete(ep: ep->in); |
1463 | } |
1464 | mutex_destroy(lock: &umidi->mutex); |
1465 | kfree(objp: umidi); |
1466 | } |
1467 | |
1468 | /* |
1469 | * Unlinks all URBs (must be done before the usb_device is deleted). |
1470 | */ |
1471 | void snd_usbmidi_disconnect(struct list_head *p) |
1472 | { |
1473 | struct snd_usb_midi *umidi; |
1474 | unsigned int i, j; |
1475 | |
1476 | umidi = list_entry(p, struct snd_usb_midi, list); |
1477 | /* |
1478 | * an URB's completion handler may start the timer and |
1479 | * a timer may submit an URB. To reliably break the cycle |
1480 | * a flag under lock must be used |
1481 | */ |
1482 | down_write(sem: &umidi->disc_rwsem); |
1483 | spin_lock_irq(lock: &umidi->disc_lock); |
1484 | umidi->disconnected = 1; |
1485 | spin_unlock_irq(lock: &umidi->disc_lock); |
1486 | up_write(sem: &umidi->disc_rwsem); |
1487 | |
1488 | del_timer_sync(timer: &umidi->error_timer); |
1489 | |
1490 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1491 | struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i]; |
1492 | if (ep->out) |
1493 | cancel_work_sync(work: &ep->out->work); |
1494 | if (ep->out) { |
1495 | for (j = 0; j < OUTPUT_URBS; ++j) |
1496 | usb_kill_urb(urb: ep->out->urbs[j].urb); |
1497 | if (umidi->usb_protocol_ops->finish_out_endpoint) |
1498 | umidi->usb_protocol_ops->finish_out_endpoint(ep->out); |
1499 | ep->out->active_urbs = 0; |
1500 | if (ep->out->drain_urbs) { |
1501 | ep->out->drain_urbs = 0; |
1502 | wake_up(&ep->out->drain_wait); |
1503 | } |
1504 | } |
1505 | if (ep->in) |
1506 | for (j = 0; j < INPUT_URBS; ++j) |
1507 | usb_kill_urb(urb: ep->in->urbs[j]); |
1508 | /* free endpoints here; later call can result in Oops */ |
1509 | if (ep->out) |
1510 | snd_usbmidi_out_endpoint_clear(ep: ep->out); |
1511 | if (ep->in) { |
1512 | snd_usbmidi_in_endpoint_delete(ep: ep->in); |
1513 | ep->in = NULL; |
1514 | } |
1515 | } |
1516 | } |
1517 | EXPORT_SYMBOL(snd_usbmidi_disconnect); |
1518 | |
1519 | static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi) |
1520 | { |
1521 | struct snd_usb_midi *umidi = rmidi->private_data; |
1522 | snd_usbmidi_free(umidi); |
1523 | } |
1524 | |
1525 | static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi *umidi, |
1526 | int stream, |
1527 | int number) |
1528 | { |
1529 | struct snd_rawmidi_substream *substream; |
1530 | |
1531 | list_for_each_entry(substream, &umidi->rmidi->streams[stream].substreams, |
1532 | list) { |
1533 | if (substream->number == number) |
1534 | return substream; |
1535 | } |
1536 | return NULL; |
1537 | } |
1538 | |
1539 | /* |
1540 | * This list specifies names for ports that do not fit into the standard |
1541 | * "(product) MIDI (n)" schema because they aren't external MIDI ports, |
1542 | * such as internal control or synthesizer ports. |
1543 | */ |
1544 | static struct port_info { |
1545 | u32 id; |
1546 | short int port; |
1547 | short int voices; |
1548 | const char *name; |
1549 | unsigned int seq_flags; |
1550 | } snd_usbmidi_port_info[] = { |
1551 | #define PORT_INFO(vendor, product, num, name_, voices_, flags) \ |
1552 | { .id = USB_ID(vendor, product), \ |
1553 | .port = num, .voices = voices_, \ |
1554 | .name = name_, .seq_flags = flags } |
1555 | #define EXTERNAL_PORT(vendor, product, num, name) \ |
1556 | PORT_INFO(vendor, product, num, name, 0, \ |
1557 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1558 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1559 | SNDRV_SEQ_PORT_TYPE_PORT) |
1560 | #define CONTROL_PORT(vendor, product, num, name) \ |
1561 | PORT_INFO(vendor, product, num, name, 0, \ |
1562 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1563 | SNDRV_SEQ_PORT_TYPE_HARDWARE) |
1564 | #define GM_SYNTH_PORT(vendor, product, num, name, voices) \ |
1565 | PORT_INFO(vendor, product, num, name, voices, \ |
1566 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1567 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ |
1568 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1569 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) |
1570 | #define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \ |
1571 | PORT_INFO(vendor, product, num, name, voices, \ |
1572 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1573 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ |
1574 | SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \ |
1575 | SNDRV_SEQ_PORT_TYPE_MIDI_GS | \ |
1576 | SNDRV_SEQ_PORT_TYPE_MIDI_XG | \ |
1577 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1578 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) |
1579 | #define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \ |
1580 | PORT_INFO(vendor, product, num, name, voices, \ |
1581 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1582 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ |
1583 | SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \ |
1584 | SNDRV_SEQ_PORT_TYPE_MIDI_GS | \ |
1585 | SNDRV_SEQ_PORT_TYPE_MIDI_XG | \ |
1586 | SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \ |
1587 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1588 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) |
1589 | /* Yamaha MOTIF XF */ |
1590 | GM_SYNTH_PORT(0x0499, 0x105c, 0, "%s Tone Generator" , 128), |
1591 | CONTROL_PORT(0x0499, 0x105c, 1, "%s Remote Control" ), |
1592 | EXTERNAL_PORT(0x0499, 0x105c, 2, "%s Thru" ), |
1593 | CONTROL_PORT(0x0499, 0x105c, 3, "%s Editor" ), |
1594 | /* Roland UA-100 */ |
1595 | CONTROL_PORT(0x0582, 0x0000, 2, "%s Control" ), |
1596 | /* Roland SC-8850 */ |
1597 | SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A" , 128), |
1598 | SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B" , 128), |
1599 | SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C" , 128), |
1600 | SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D" , 128), |
1601 | EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1" ), |
1602 | EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2" ), |
1603 | /* Roland U-8 */ |
1604 | EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI" ), |
1605 | CONTROL_PORT(0x0582, 0x0004, 1, "%s Control" ), |
1606 | /* Roland SC-8820 */ |
1607 | SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A" , 64), |
1608 | SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B" , 64), |
1609 | EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI" ), |
1610 | /* Roland SK-500 */ |
1611 | SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A" , 64), |
1612 | SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B" , 64), |
1613 | EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI" ), |
1614 | /* Roland SC-D70 */ |
1615 | SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A" , 64), |
1616 | SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B" , 64), |
1617 | EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI" ), |
1618 | /* Edirol UM-880 */ |
1619 | CONTROL_PORT(0x0582, 0x0014, 8, "%s Control" ), |
1620 | /* Edirol SD-90 */ |
1621 | ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A" , 128), |
1622 | ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B" , 128), |
1623 | EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1" ), |
1624 | EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2" ), |
1625 | /* Edirol UM-550 */ |
1626 | CONTROL_PORT(0x0582, 0x0023, 5, "%s Control" ), |
1627 | /* Edirol SD-20 */ |
1628 | ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A" , 64), |
1629 | ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B" , 64), |
1630 | EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI" ), |
1631 | /* Edirol SD-80 */ |
1632 | ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A" , 128), |
1633 | ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B" , 128), |
1634 | EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1" ), |
1635 | EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2" ), |
1636 | /* Edirol UA-700 */ |
1637 | EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI" ), |
1638 | CONTROL_PORT(0x0582, 0x002b, 1, "%s Control" ), |
1639 | /* Roland VariOS */ |
1640 | EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI" ), |
1641 | EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI" ), |
1642 | EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync" ), |
1643 | /* Edirol PCR */ |
1644 | EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI" ), |
1645 | EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1" ), |
1646 | EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2" ), |
1647 | /* BOSS GS-10 */ |
1648 | EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI" ), |
1649 | CONTROL_PORT(0x0582, 0x003b, 1, "%s Control" ), |
1650 | /* Edirol UA-1000 */ |
1651 | EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI" ), |
1652 | CONTROL_PORT(0x0582, 0x0044, 1, "%s Control" ), |
1653 | /* Edirol UR-80 */ |
1654 | EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI" ), |
1655 | EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1" ), |
1656 | EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2" ), |
1657 | /* Edirol PCR-A */ |
1658 | EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI" ), |
1659 | EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1" ), |
1660 | EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2" ), |
1661 | /* BOSS GT-PRO */ |
1662 | CONTROL_PORT(0x0582, 0x0089, 0, "%s Control" ), |
1663 | /* Edirol UM-3EX */ |
1664 | CONTROL_PORT(0x0582, 0x009a, 3, "%s Control" ), |
1665 | /* Roland VG-99 */ |
1666 | CONTROL_PORT(0x0582, 0x00b2, 0, "%s Control" ), |
1667 | EXTERNAL_PORT(0x0582, 0x00b2, 1, "%s MIDI" ), |
1668 | /* Cakewalk Sonar V-Studio 100 */ |
1669 | EXTERNAL_PORT(0x0582, 0x00eb, 0, "%s MIDI" ), |
1670 | CONTROL_PORT(0x0582, 0x00eb, 1, "%s Control" ), |
1671 | /* Roland VB-99 */ |
1672 | CONTROL_PORT(0x0582, 0x0102, 0, "%s Control" ), |
1673 | EXTERNAL_PORT(0x0582, 0x0102, 1, "%s MIDI" ), |
1674 | /* Roland A-PRO */ |
1675 | EXTERNAL_PORT(0x0582, 0x010f, 0, "%s MIDI" ), |
1676 | CONTROL_PORT(0x0582, 0x010f, 1, "%s 1" ), |
1677 | CONTROL_PORT(0x0582, 0x010f, 2, "%s 2" ), |
1678 | /* Roland SD-50 */ |
1679 | ROLAND_SYNTH_PORT(0x0582, 0x0114, 0, "%s Synth" , 128), |
1680 | EXTERNAL_PORT(0x0582, 0x0114, 1, "%s MIDI" ), |
1681 | CONTROL_PORT(0x0582, 0x0114, 2, "%s Control" ), |
1682 | /* Roland OCTA-CAPTURE */ |
1683 | EXTERNAL_PORT(0x0582, 0x0120, 0, "%s MIDI" ), |
1684 | CONTROL_PORT(0x0582, 0x0120, 1, "%s Control" ), |
1685 | EXTERNAL_PORT(0x0582, 0x0121, 0, "%s MIDI" ), |
1686 | CONTROL_PORT(0x0582, 0x0121, 1, "%s Control" ), |
1687 | /* Roland SPD-SX */ |
1688 | CONTROL_PORT(0x0582, 0x0145, 0, "%s Control" ), |
1689 | EXTERNAL_PORT(0x0582, 0x0145, 1, "%s MIDI" ), |
1690 | /* Roland A-Series */ |
1691 | CONTROL_PORT(0x0582, 0x0156, 0, "%s Keyboard" ), |
1692 | EXTERNAL_PORT(0x0582, 0x0156, 1, "%s MIDI" ), |
1693 | /* Roland INTEGRA-7 */ |
1694 | ROLAND_SYNTH_PORT(0x0582, 0x015b, 0, "%s Synth" , 128), |
1695 | CONTROL_PORT(0x0582, 0x015b, 1, "%s Control" ), |
1696 | /* M-Audio MidiSport 8x8 */ |
1697 | CONTROL_PORT(0x0763, 0x1031, 8, "%s Control" ), |
1698 | CONTROL_PORT(0x0763, 0x1033, 8, "%s Control" ), |
1699 | /* MOTU Fastlane */ |
1700 | EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A" ), |
1701 | EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B" ), |
1702 | /* Emagic Unitor8/AMT8/MT4 */ |
1703 | EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast" ), |
1704 | EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast" ), |
1705 | EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast" ), |
1706 | /* Akai MPD16 */ |
1707 | CONTROL_PORT(0x09e8, 0x0062, 0, "%s Control" ), |
1708 | PORT_INFO(0x09e8, 0x0062, 1, "%s MIDI" , 0, |
1709 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | |
1710 | SNDRV_SEQ_PORT_TYPE_HARDWARE), |
1711 | /* Access Music Virus TI */ |
1712 | EXTERNAL_PORT(0x133e, 0x0815, 0, "%s MIDI" ), |
1713 | PORT_INFO(0x133e, 0x0815, 1, "%s Synth" , 0, |
1714 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | |
1715 | SNDRV_SEQ_PORT_TYPE_HARDWARE | |
1716 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER), |
1717 | }; |
1718 | |
1719 | static struct port_info *find_port_info(struct snd_usb_midi *umidi, int number) |
1720 | { |
1721 | int i; |
1722 | |
1723 | for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) { |
1724 | if (snd_usbmidi_port_info[i].id == umidi->usb_id && |
1725 | snd_usbmidi_port_info[i].port == number) |
1726 | return &snd_usbmidi_port_info[i]; |
1727 | } |
1728 | return NULL; |
1729 | } |
1730 | |
1731 | static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number, |
1732 | struct snd_seq_port_info *seq_port_info) |
1733 | { |
1734 | struct snd_usb_midi *umidi = rmidi->private_data; |
1735 | struct port_info *port_info; |
1736 | |
1737 | /* TODO: read port flags from descriptors */ |
1738 | port_info = find_port_info(umidi, number); |
1739 | if (port_info) { |
1740 | seq_port_info->type = port_info->seq_flags; |
1741 | seq_port_info->midi_voices = port_info->voices; |
1742 | } |
1743 | } |
1744 | |
1745 | static struct usb_midi_in_jack_descriptor *find_usb_in_jack_descriptor( |
1746 | struct usb_host_interface *hostif, uint8_t jack_id) |
1747 | { |
1748 | unsigned char * = hostif->extra; |
1749 | int = hostif->extralen; |
1750 | |
1751 | while (extralen > 4) { |
1752 | struct usb_midi_in_jack_descriptor *injd = |
1753 | (struct usb_midi_in_jack_descriptor *)extra; |
1754 | |
1755 | if (injd->bLength >= sizeof(*injd) && |
1756 | injd->bDescriptorType == USB_DT_CS_INTERFACE && |
1757 | injd->bDescriptorSubtype == UAC_MIDI_IN_JACK && |
1758 | injd->bJackID == jack_id) |
1759 | return injd; |
1760 | if (!extra[0]) |
1761 | break; |
1762 | extralen -= extra[0]; |
1763 | extra += extra[0]; |
1764 | } |
1765 | return NULL; |
1766 | } |
1767 | |
1768 | static struct usb_midi_out_jack_descriptor *find_usb_out_jack_descriptor( |
1769 | struct usb_host_interface *hostif, uint8_t jack_id) |
1770 | { |
1771 | unsigned char * = hostif->extra; |
1772 | int = hostif->extralen; |
1773 | |
1774 | while (extralen > 4) { |
1775 | struct usb_midi_out_jack_descriptor *outjd = |
1776 | (struct usb_midi_out_jack_descriptor *)extra; |
1777 | |
1778 | if (outjd->bLength >= sizeof(*outjd) && |
1779 | outjd->bDescriptorType == USB_DT_CS_INTERFACE && |
1780 | outjd->bDescriptorSubtype == UAC_MIDI_OUT_JACK && |
1781 | outjd->bJackID == jack_id) |
1782 | return outjd; |
1783 | if (!extra[0]) |
1784 | break; |
1785 | extralen -= extra[0]; |
1786 | extra += extra[0]; |
1787 | } |
1788 | return NULL; |
1789 | } |
1790 | |
1791 | static void snd_usbmidi_init_substream(struct snd_usb_midi *umidi, |
1792 | int stream, int number, int jack_id, |
1793 | struct snd_rawmidi_substream **rsubstream) |
1794 | { |
1795 | struct port_info *port_info; |
1796 | const char *name_format; |
1797 | struct usb_interface *intf; |
1798 | struct usb_host_interface *hostif; |
1799 | struct usb_midi_in_jack_descriptor *injd; |
1800 | struct usb_midi_out_jack_descriptor *outjd; |
1801 | uint8_t jack_name_buf[32]; |
1802 | uint8_t *default_jack_name = "MIDI" ; |
1803 | uint8_t *jack_name = default_jack_name; |
1804 | uint8_t iJack; |
1805 | size_t sz; |
1806 | int res; |
1807 | |
1808 | struct snd_rawmidi_substream *substream = |
1809 | snd_usbmidi_find_substream(umidi, stream, number); |
1810 | if (!substream) { |
1811 | dev_err(&umidi->dev->dev, "substream %d:%d not found\n" , stream, |
1812 | number); |
1813 | return; |
1814 | } |
1815 | |
1816 | intf = umidi->iface; |
1817 | if (intf && jack_id >= 0) { |
1818 | hostif = intf->cur_altsetting; |
1819 | iJack = 0; |
1820 | if (stream != SNDRV_RAWMIDI_STREAM_OUTPUT) { |
1821 | /* in jacks connect to outs */ |
1822 | outjd = find_usb_out_jack_descriptor(hostif, jack_id); |
1823 | if (outjd) { |
1824 | sz = USB_DT_MIDI_OUT_SIZE(outjd->bNrInputPins); |
1825 | if (outjd->bLength >= sz) |
1826 | iJack = *(((uint8_t *) outjd) + sz - sizeof(uint8_t)); |
1827 | } |
1828 | } else { |
1829 | /* and out jacks connect to ins */ |
1830 | injd = find_usb_in_jack_descriptor(hostif, jack_id); |
1831 | if (injd) |
1832 | iJack = injd->iJack; |
1833 | } |
1834 | if (iJack != 0) { |
1835 | res = usb_string(dev: umidi->dev, index: iJack, buf: jack_name_buf, |
1836 | ARRAY_SIZE(jack_name_buf)); |
1837 | if (res) |
1838 | jack_name = jack_name_buf; |
1839 | } |
1840 | } |
1841 | |
1842 | port_info = find_port_info(umidi, number); |
1843 | name_format = port_info ? port_info->name : |
1844 | (jack_name != default_jack_name ? "%s %s" : "%s %s %d" ); |
1845 | snprintf(buf: substream->name, size: sizeof(substream->name), |
1846 | fmt: name_format, umidi->card->shortname, jack_name, number + 1); |
1847 | |
1848 | *rsubstream = substream; |
1849 | } |
1850 | |
1851 | /* |
1852 | * Creates the endpoints and their ports. |
1853 | */ |
1854 | static int snd_usbmidi_create_endpoints(struct snd_usb_midi *umidi, |
1855 | struct snd_usb_midi_endpoint_info *endpoints) |
1856 | { |
1857 | int i, j, err; |
1858 | int out_ports = 0, in_ports = 0; |
1859 | |
1860 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1861 | if (endpoints[i].out_cables) { |
1862 | err = snd_usbmidi_out_endpoint_create(umidi, |
1863 | ep_info: &endpoints[i], |
1864 | rep: &umidi->endpoints[i]); |
1865 | if (err < 0) |
1866 | return err; |
1867 | } |
1868 | if (endpoints[i].in_cables) { |
1869 | err = snd_usbmidi_in_endpoint_create(umidi, |
1870 | ep_info: &endpoints[i], |
1871 | rep: &umidi->endpoints[i]); |
1872 | if (err < 0) |
1873 | return err; |
1874 | } |
1875 | |
1876 | for (j = 0; j < 0x10; ++j) { |
1877 | if (endpoints[i].out_cables & (1 << j)) { |
1878 | snd_usbmidi_init_substream(umidi, |
1879 | stream: SNDRV_RAWMIDI_STREAM_OUTPUT, |
1880 | number: out_ports, |
1881 | jack_id: endpoints[i].assoc_out_jacks[j], |
1882 | rsubstream: &umidi->endpoints[i].out->ports[j].substream); |
1883 | ++out_ports; |
1884 | } |
1885 | if (endpoints[i].in_cables & (1 << j)) { |
1886 | snd_usbmidi_init_substream(umidi, |
1887 | stream: SNDRV_RAWMIDI_STREAM_INPUT, |
1888 | number: in_ports, |
1889 | jack_id: endpoints[i].assoc_in_jacks[j], |
1890 | rsubstream: &umidi->endpoints[i].in->ports[j].substream); |
1891 | ++in_ports; |
1892 | } |
1893 | } |
1894 | } |
1895 | dev_dbg(&umidi->dev->dev, "created %d output and %d input ports\n" , |
1896 | out_ports, in_ports); |
1897 | return 0; |
1898 | } |
1899 | |
1900 | static struct usb_ms_endpoint_descriptor *find_usb_ms_endpoint_descriptor( |
1901 | struct usb_host_endpoint *hostep) |
1902 | { |
1903 | unsigned char * = hostep->extra; |
1904 | int = hostep->extralen; |
1905 | |
1906 | while (extralen > 3) { |
1907 | struct usb_ms_endpoint_descriptor *ms_ep = |
1908 | (struct usb_ms_endpoint_descriptor *)extra; |
1909 | |
1910 | if (ms_ep->bLength > 3 && |
1911 | ms_ep->bDescriptorType == USB_DT_CS_ENDPOINT && |
1912 | ms_ep->bDescriptorSubtype == UAC_MS_GENERAL) |
1913 | return ms_ep; |
1914 | if (!extra[0]) |
1915 | break; |
1916 | extralen -= extra[0]; |
1917 | extra += extra[0]; |
1918 | } |
1919 | return NULL; |
1920 | } |
1921 | |
1922 | /* |
1923 | * Returns MIDIStreaming device capabilities. |
1924 | */ |
1925 | static int snd_usbmidi_get_ms_info(struct snd_usb_midi *umidi, |
1926 | struct snd_usb_midi_endpoint_info *endpoints) |
1927 | { |
1928 | struct usb_interface *intf; |
1929 | struct usb_host_interface *hostif; |
1930 | struct usb_interface_descriptor *intfd; |
1931 | struct usb_ms_header_descriptor *; |
1932 | struct usb_host_endpoint *hostep; |
1933 | struct usb_endpoint_descriptor *ep; |
1934 | struct usb_ms_endpoint_descriptor *ms_ep; |
1935 | int i, j, epidx; |
1936 | |
1937 | intf = umidi->iface; |
1938 | if (!intf) |
1939 | return -ENXIO; |
1940 | hostif = &intf->altsetting[0]; |
1941 | intfd = get_iface_desc(hostif); |
1942 | ms_header = (struct usb_ms_header_descriptor *)hostif->extra; |
1943 | if (hostif->extralen >= 7 && |
1944 | ms_header->bLength >= 7 && |
1945 | ms_header->bDescriptorType == USB_DT_CS_INTERFACE && |
1946 | ms_header->bDescriptorSubtype == UAC_HEADER) |
1947 | dev_dbg(&umidi->dev->dev, "MIDIStreaming version %02x.%02x\n" , |
1948 | ((uint8_t *)&ms_header->bcdMSC)[1], ((uint8_t *)&ms_header->bcdMSC)[0]); |
1949 | else |
1950 | dev_warn(&umidi->dev->dev, |
1951 | "MIDIStreaming interface descriptor not found\n" ); |
1952 | |
1953 | epidx = 0; |
1954 | for (i = 0; i < intfd->bNumEndpoints; ++i) { |
1955 | hostep = &hostif->endpoint[i]; |
1956 | ep = get_ep_desc(hostep); |
1957 | if (!usb_endpoint_xfer_bulk(epd: ep) && !usb_endpoint_xfer_int(epd: ep)) |
1958 | continue; |
1959 | ms_ep = find_usb_ms_endpoint_descriptor(hostep); |
1960 | if (!ms_ep) |
1961 | continue; |
1962 | if (ms_ep->bLength <= sizeof(*ms_ep)) |
1963 | continue; |
1964 | if (ms_ep->bNumEmbMIDIJack > 0x10) |
1965 | continue; |
1966 | if (ms_ep->bLength < sizeof(*ms_ep) + ms_ep->bNumEmbMIDIJack) |
1967 | continue; |
1968 | if (usb_endpoint_dir_out(epd: ep)) { |
1969 | if (endpoints[epidx].out_ep) { |
1970 | if (++epidx >= MIDI_MAX_ENDPOINTS) { |
1971 | dev_warn(&umidi->dev->dev, |
1972 | "too many endpoints\n" ); |
1973 | break; |
1974 | } |
1975 | } |
1976 | endpoints[epidx].out_ep = usb_endpoint_num(epd: ep); |
1977 | if (usb_endpoint_xfer_int(epd: ep)) |
1978 | endpoints[epidx].out_interval = ep->bInterval; |
1979 | else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW) |
1980 | /* |
1981 | * Low speed bulk transfers don't exist, so |
1982 | * force interrupt transfers for devices like |
1983 | * ESI MIDI Mate that try to use them anyway. |
1984 | */ |
1985 | endpoints[epidx].out_interval = 1; |
1986 | endpoints[epidx].out_cables = |
1987 | (1 << ms_ep->bNumEmbMIDIJack) - 1; |
1988 | for (j = 0; j < ms_ep->bNumEmbMIDIJack; ++j) |
1989 | endpoints[epidx].assoc_out_jacks[j] = ms_ep->baAssocJackID[j]; |
1990 | for (; j < ARRAY_SIZE(endpoints[epidx].assoc_out_jacks); ++j) |
1991 | endpoints[epidx].assoc_out_jacks[j] = -1; |
1992 | dev_dbg(&umidi->dev->dev, "EP %02X: %d jack(s)\n" , |
1993 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); |
1994 | } else { |
1995 | if (endpoints[epidx].in_ep) { |
1996 | if (++epidx >= MIDI_MAX_ENDPOINTS) { |
1997 | dev_warn(&umidi->dev->dev, |
1998 | "too many endpoints\n" ); |
1999 | break; |
2000 | } |
2001 | } |
2002 | endpoints[epidx].in_ep = usb_endpoint_num(epd: ep); |
2003 | if (usb_endpoint_xfer_int(epd: ep)) |
2004 | endpoints[epidx].in_interval = ep->bInterval; |
2005 | else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW) |
2006 | endpoints[epidx].in_interval = 1; |
2007 | endpoints[epidx].in_cables = |
2008 | (1 << ms_ep->bNumEmbMIDIJack) - 1; |
2009 | for (j = 0; j < ms_ep->bNumEmbMIDIJack; ++j) |
2010 | endpoints[epidx].assoc_in_jacks[j] = ms_ep->baAssocJackID[j]; |
2011 | for (; j < ARRAY_SIZE(endpoints[epidx].assoc_in_jacks); ++j) |
2012 | endpoints[epidx].assoc_in_jacks[j] = -1; |
2013 | dev_dbg(&umidi->dev->dev, "EP %02X: %d jack(s)\n" , |
2014 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); |
2015 | } |
2016 | } |
2017 | return 0; |
2018 | } |
2019 | |
2020 | static int roland_load_info(struct snd_kcontrol *kcontrol, |
2021 | struct snd_ctl_elem_info *info) |
2022 | { |
2023 | static const char *const names[] = { "High Load" , "Light Load" }; |
2024 | |
2025 | return snd_ctl_enum_info(info, channels: 1, items: 2, names); |
2026 | } |
2027 | |
2028 | static int roland_load_get(struct snd_kcontrol *kcontrol, |
2029 | struct snd_ctl_elem_value *value) |
2030 | { |
2031 | value->value.enumerated.item[0] = kcontrol->private_value; |
2032 | return 0; |
2033 | } |
2034 | |
2035 | static int roland_load_put(struct snd_kcontrol *kcontrol, |
2036 | struct snd_ctl_elem_value *value) |
2037 | { |
2038 | struct snd_usb_midi *umidi = kcontrol->private_data; |
2039 | int changed; |
2040 | |
2041 | if (value->value.enumerated.item[0] > 1) |
2042 | return -EINVAL; |
2043 | mutex_lock(&umidi->mutex); |
2044 | changed = value->value.enumerated.item[0] != kcontrol->private_value; |
2045 | if (changed) |
2046 | kcontrol->private_value = value->value.enumerated.item[0]; |
2047 | mutex_unlock(lock: &umidi->mutex); |
2048 | return changed; |
2049 | } |
2050 | |
2051 | static const struct snd_kcontrol_new roland_load_ctl = { |
2052 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
2053 | .name = "MIDI Input Mode" , |
2054 | .info = roland_load_info, |
2055 | .get = roland_load_get, |
2056 | .put = roland_load_put, |
2057 | .private_value = 1, |
2058 | }; |
2059 | |
2060 | /* |
2061 | * On Roland devices, use the second alternate setting to be able to use |
2062 | * the interrupt input endpoint. |
2063 | */ |
2064 | static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi *umidi) |
2065 | { |
2066 | struct usb_interface *intf; |
2067 | struct usb_host_interface *hostif; |
2068 | struct usb_interface_descriptor *intfd; |
2069 | |
2070 | intf = umidi->iface; |
2071 | if (!intf || intf->num_altsetting != 2) |
2072 | return; |
2073 | |
2074 | hostif = &intf->altsetting[1]; |
2075 | intfd = get_iface_desc(hostif); |
2076 | /* If either or both of the endpoints support interrupt transfer, |
2077 | * then use the alternate setting |
2078 | */ |
2079 | if (intfd->bNumEndpoints != 2 || |
2080 | !((get_endpoint(hostif, 0)->bmAttributes & |
2081 | USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT || |
2082 | (get_endpoint(hostif, 1)->bmAttributes & |
2083 | USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) |
2084 | return; |
2085 | |
2086 | dev_dbg(&umidi->dev->dev, "switching to altsetting %d with int ep\n" , |
2087 | intfd->bAlternateSetting); |
2088 | usb_set_interface(dev: umidi->dev, ifnum: intfd->bInterfaceNumber, |
2089 | alternate: intfd->bAlternateSetting); |
2090 | |
2091 | umidi->roland_load_ctl = snd_ctl_new1(kcontrolnew: &roland_load_ctl, private_data: umidi); |
2092 | if (snd_ctl_add(card: umidi->card, kcontrol: umidi->roland_load_ctl) < 0) |
2093 | umidi->roland_load_ctl = NULL; |
2094 | } |
2095 | |
2096 | /* |
2097 | * Try to find any usable endpoints in the interface. |
2098 | */ |
2099 | static int snd_usbmidi_detect_endpoints(struct snd_usb_midi *umidi, |
2100 | struct snd_usb_midi_endpoint_info *endpoint, |
2101 | int max_endpoints) |
2102 | { |
2103 | struct usb_interface *intf; |
2104 | struct usb_host_interface *hostif; |
2105 | struct usb_interface_descriptor *intfd; |
2106 | struct usb_endpoint_descriptor *epd; |
2107 | int i, out_eps = 0, in_eps = 0; |
2108 | |
2109 | if (USB_ID_VENDOR(umidi->usb_id) == 0x0582) |
2110 | snd_usbmidi_switch_roland_altsetting(umidi); |
2111 | |
2112 | if (endpoint[0].out_ep || endpoint[0].in_ep) |
2113 | return 0; |
2114 | |
2115 | intf = umidi->iface; |
2116 | if (!intf || intf->num_altsetting < 1) |
2117 | return -ENOENT; |
2118 | hostif = intf->cur_altsetting; |
2119 | intfd = get_iface_desc(hostif); |
2120 | |
2121 | for (i = 0; i < intfd->bNumEndpoints; ++i) { |
2122 | epd = get_endpoint(hostif, i); |
2123 | if (!usb_endpoint_xfer_bulk(epd) && |
2124 | !usb_endpoint_xfer_int(epd)) |
2125 | continue; |
2126 | if (out_eps < max_endpoints && |
2127 | usb_endpoint_dir_out(epd)) { |
2128 | endpoint[out_eps].out_ep = usb_endpoint_num(epd); |
2129 | if (usb_endpoint_xfer_int(epd)) |
2130 | endpoint[out_eps].out_interval = epd->bInterval; |
2131 | ++out_eps; |
2132 | } |
2133 | if (in_eps < max_endpoints && |
2134 | usb_endpoint_dir_in(epd)) { |
2135 | endpoint[in_eps].in_ep = usb_endpoint_num(epd); |
2136 | if (usb_endpoint_xfer_int(epd)) |
2137 | endpoint[in_eps].in_interval = epd->bInterval; |
2138 | ++in_eps; |
2139 | } |
2140 | } |
2141 | return (out_eps || in_eps) ? 0 : -ENOENT; |
2142 | } |
2143 | |
2144 | /* |
2145 | * Detects the endpoints for one-port-per-endpoint protocols. |
2146 | */ |
2147 | static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi *umidi, |
2148 | struct snd_usb_midi_endpoint_info *endpoints) |
2149 | { |
2150 | int err, i; |
2151 | |
2152 | err = snd_usbmidi_detect_endpoints(umidi, endpoint: endpoints, MIDI_MAX_ENDPOINTS); |
2153 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
2154 | if (endpoints[i].out_ep) |
2155 | endpoints[i].out_cables = 0x0001; |
2156 | if (endpoints[i].in_ep) |
2157 | endpoints[i].in_cables = 0x0001; |
2158 | } |
2159 | return err; |
2160 | } |
2161 | |
2162 | /* |
2163 | * Detects the endpoints and ports of Yamaha devices. |
2164 | */ |
2165 | static int snd_usbmidi_detect_yamaha(struct snd_usb_midi *umidi, |
2166 | struct snd_usb_midi_endpoint_info *endpoint) |
2167 | { |
2168 | struct usb_interface *intf; |
2169 | struct usb_host_interface *hostif; |
2170 | struct usb_interface_descriptor *intfd; |
2171 | uint8_t *cs_desc; |
2172 | |
2173 | intf = umidi->iface; |
2174 | if (!intf) |
2175 | return -ENOENT; |
2176 | hostif = intf->altsetting; |
2177 | intfd = get_iface_desc(hostif); |
2178 | if (intfd->bNumEndpoints < 1) |
2179 | return -ENOENT; |
2180 | |
2181 | /* |
2182 | * For each port there is one MIDI_IN/OUT_JACK descriptor, not |
2183 | * necessarily with any useful contents. So simply count 'em. |
2184 | */ |
2185 | for (cs_desc = hostif->extra; |
2186 | cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2; |
2187 | cs_desc += cs_desc[0]) { |
2188 | if (cs_desc[1] == USB_DT_CS_INTERFACE) { |
2189 | if (cs_desc[2] == UAC_MIDI_IN_JACK) |
2190 | endpoint->in_cables = |
2191 | (endpoint->in_cables << 1) | 1; |
2192 | else if (cs_desc[2] == UAC_MIDI_OUT_JACK) |
2193 | endpoint->out_cables = |
2194 | (endpoint->out_cables << 1) | 1; |
2195 | } |
2196 | } |
2197 | if (!endpoint->in_cables && !endpoint->out_cables) |
2198 | return -ENOENT; |
2199 | |
2200 | return snd_usbmidi_detect_endpoints(umidi, endpoint, max_endpoints: 1); |
2201 | } |
2202 | |
2203 | /* |
2204 | * Detects the endpoints and ports of Roland devices. |
2205 | */ |
2206 | static int snd_usbmidi_detect_roland(struct snd_usb_midi *umidi, |
2207 | struct snd_usb_midi_endpoint_info *endpoint) |
2208 | { |
2209 | struct usb_interface *intf; |
2210 | struct usb_host_interface *hostif; |
2211 | u8 *cs_desc; |
2212 | |
2213 | intf = umidi->iface; |
2214 | if (!intf) |
2215 | return -ENOENT; |
2216 | hostif = intf->altsetting; |
2217 | /* |
2218 | * Some devices have a descriptor <06 24 F1 02 <inputs> <outputs>>, |
2219 | * some have standard class descriptors, or both kinds, or neither. |
2220 | */ |
2221 | for (cs_desc = hostif->extra; |
2222 | cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2; |
2223 | cs_desc += cs_desc[0]) { |
2224 | if (cs_desc[0] >= 6 && |
2225 | cs_desc[1] == USB_DT_CS_INTERFACE && |
2226 | cs_desc[2] == 0xf1 && |
2227 | cs_desc[3] == 0x02) { |
2228 | if (cs_desc[4] > 0x10 || cs_desc[5] > 0x10) |
2229 | continue; |
2230 | endpoint->in_cables = (1 << cs_desc[4]) - 1; |
2231 | endpoint->out_cables = (1 << cs_desc[5]) - 1; |
2232 | return snd_usbmidi_detect_endpoints(umidi, endpoint, max_endpoints: 1); |
2233 | } else if (cs_desc[0] >= 7 && |
2234 | cs_desc[1] == USB_DT_CS_INTERFACE && |
2235 | cs_desc[2] == UAC_HEADER) { |
2236 | return snd_usbmidi_get_ms_info(umidi, endpoints: endpoint); |
2237 | } |
2238 | } |
2239 | |
2240 | return -ENODEV; |
2241 | } |
2242 | |
2243 | /* |
2244 | * Creates the endpoints and their ports for Midiman devices. |
2245 | */ |
2246 | static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi *umidi, |
2247 | struct snd_usb_midi_endpoint_info *endpoint) |
2248 | { |
2249 | struct snd_usb_midi_endpoint_info ep_info; |
2250 | struct usb_interface *intf; |
2251 | struct usb_host_interface *hostif; |
2252 | struct usb_interface_descriptor *intfd; |
2253 | struct usb_endpoint_descriptor *epd; |
2254 | int cable, err; |
2255 | |
2256 | intf = umidi->iface; |
2257 | if (!intf) |
2258 | return -ENOENT; |
2259 | hostif = intf->altsetting; |
2260 | intfd = get_iface_desc(hostif); |
2261 | /* |
2262 | * The various MidiSport devices have more or less random endpoint |
2263 | * numbers, so we have to identify the endpoints by their index in |
2264 | * the descriptor array, like the driver for that other OS does. |
2265 | * |
2266 | * There is one interrupt input endpoint for all input ports, one |
2267 | * bulk output endpoint for even-numbered ports, and one for odd- |
2268 | * numbered ports. Both bulk output endpoints have corresponding |
2269 | * input bulk endpoints (at indices 1 and 3) which aren't used. |
2270 | */ |
2271 | if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) { |
2272 | dev_dbg(&umidi->dev->dev, "not enough endpoints\n" ); |
2273 | return -ENOENT; |
2274 | } |
2275 | |
2276 | epd = get_endpoint(hostif, 0); |
2277 | if (!usb_endpoint_dir_in(epd) || !usb_endpoint_xfer_int(epd)) { |
2278 | dev_dbg(&umidi->dev->dev, "endpoint[0] isn't interrupt\n" ); |
2279 | return -ENXIO; |
2280 | } |
2281 | epd = get_endpoint(hostif, 2); |
2282 | if (!usb_endpoint_dir_out(epd) || !usb_endpoint_xfer_bulk(epd)) { |
2283 | dev_dbg(&umidi->dev->dev, "endpoint[2] isn't bulk output\n" ); |
2284 | return -ENXIO; |
2285 | } |
2286 | if (endpoint->out_cables > 0x0001) { |
2287 | epd = get_endpoint(hostif, 4); |
2288 | if (!usb_endpoint_dir_out(epd) || |
2289 | !usb_endpoint_xfer_bulk(epd)) { |
2290 | dev_dbg(&umidi->dev->dev, |
2291 | "endpoint[4] isn't bulk output\n" ); |
2292 | return -ENXIO; |
2293 | } |
2294 | } |
2295 | |
2296 | ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & |
2297 | USB_ENDPOINT_NUMBER_MASK; |
2298 | ep_info.out_interval = 0; |
2299 | ep_info.out_cables = endpoint->out_cables & 0x5555; |
2300 | err = snd_usbmidi_out_endpoint_create(umidi, ep_info: &ep_info, |
2301 | rep: &umidi->endpoints[0]); |
2302 | if (err < 0) |
2303 | return err; |
2304 | |
2305 | ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & |
2306 | USB_ENDPOINT_NUMBER_MASK; |
2307 | ep_info.in_interval = get_endpoint(hostif, 0)->bInterval; |
2308 | ep_info.in_cables = endpoint->in_cables; |
2309 | err = snd_usbmidi_in_endpoint_create(umidi, ep_info: &ep_info, |
2310 | rep: &umidi->endpoints[0]); |
2311 | if (err < 0) |
2312 | return err; |
2313 | |
2314 | if (endpoint->out_cables > 0x0001) { |
2315 | ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & |
2316 | USB_ENDPOINT_NUMBER_MASK; |
2317 | ep_info.out_cables = endpoint->out_cables & 0xaaaa; |
2318 | err = snd_usbmidi_out_endpoint_create(umidi, ep_info: &ep_info, |
2319 | rep: &umidi->endpoints[1]); |
2320 | if (err < 0) |
2321 | return err; |
2322 | } |
2323 | |
2324 | for (cable = 0; cable < 0x10; ++cable) { |
2325 | if (endpoint->out_cables & (1 << cable)) |
2326 | snd_usbmidi_init_substream(umidi, |
2327 | stream: SNDRV_RAWMIDI_STREAM_OUTPUT, |
2328 | number: cable, |
2329 | jack_id: -1 /* prevent trying to find jack */, |
2330 | rsubstream: &umidi->endpoints[cable & 1].out->ports[cable].substream); |
2331 | if (endpoint->in_cables & (1 << cable)) |
2332 | snd_usbmidi_init_substream(umidi, |
2333 | stream: SNDRV_RAWMIDI_STREAM_INPUT, |
2334 | number: cable, |
2335 | jack_id: -1 /* prevent trying to find jack */, |
2336 | rsubstream: &umidi->endpoints[0].in->ports[cable].substream); |
2337 | } |
2338 | return 0; |
2339 | } |
2340 | |
2341 | static const struct snd_rawmidi_global_ops snd_usbmidi_ops = { |
2342 | .get_port_info = snd_usbmidi_get_port_info, |
2343 | }; |
2344 | |
2345 | static int snd_usbmidi_create_rawmidi(struct snd_usb_midi *umidi, |
2346 | int out_ports, int in_ports) |
2347 | { |
2348 | struct snd_rawmidi *rmidi; |
2349 | int err; |
2350 | |
2351 | err = snd_rawmidi_new(card: umidi->card, id: "USB MIDI" , |
2352 | device: umidi->next_midi_device++, |
2353 | output_count: out_ports, input_count: in_ports, rmidi: &rmidi); |
2354 | if (err < 0) |
2355 | return err; |
2356 | strcpy(p: rmidi->name, q: umidi->card->shortname); |
2357 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | |
2358 | SNDRV_RAWMIDI_INFO_INPUT | |
2359 | SNDRV_RAWMIDI_INFO_DUPLEX; |
2360 | rmidi->ops = &snd_usbmidi_ops; |
2361 | rmidi->private_data = umidi; |
2362 | rmidi->private_free = snd_usbmidi_rawmidi_free; |
2363 | snd_rawmidi_set_ops(rmidi, stream: SNDRV_RAWMIDI_STREAM_OUTPUT, |
2364 | ops: &snd_usbmidi_output_ops); |
2365 | snd_rawmidi_set_ops(rmidi, stream: SNDRV_RAWMIDI_STREAM_INPUT, |
2366 | ops: &snd_usbmidi_input_ops); |
2367 | |
2368 | umidi->rmidi = rmidi; |
2369 | return 0; |
2370 | } |
2371 | |
2372 | /* |
2373 | * Temporarily stop input. |
2374 | */ |
2375 | void snd_usbmidi_input_stop(struct list_head *p) |
2376 | { |
2377 | struct snd_usb_midi *umidi; |
2378 | unsigned int i, j; |
2379 | |
2380 | umidi = list_entry(p, struct snd_usb_midi, list); |
2381 | if (!umidi->input_running) |
2382 | return; |
2383 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
2384 | struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i]; |
2385 | if (ep->in) |
2386 | for (j = 0; j < INPUT_URBS; ++j) |
2387 | usb_kill_urb(urb: ep->in->urbs[j]); |
2388 | } |
2389 | umidi->input_running = 0; |
2390 | } |
2391 | EXPORT_SYMBOL(snd_usbmidi_input_stop); |
2392 | |
2393 | static void snd_usbmidi_input_start_ep(struct snd_usb_midi *umidi, |
2394 | struct snd_usb_midi_in_endpoint *ep) |
2395 | { |
2396 | unsigned int i; |
2397 | unsigned long flags; |
2398 | |
2399 | if (!ep) |
2400 | return; |
2401 | for (i = 0; i < INPUT_URBS; ++i) { |
2402 | struct urb *urb = ep->urbs[i]; |
2403 | spin_lock_irqsave(&umidi->disc_lock, flags); |
2404 | if (!atomic_read(v: &urb->use_count)) { |
2405 | urb->dev = ep->umidi->dev; |
2406 | snd_usbmidi_submit_urb(urb, GFP_ATOMIC); |
2407 | } |
2408 | spin_unlock_irqrestore(lock: &umidi->disc_lock, flags); |
2409 | } |
2410 | } |
2411 | |
2412 | /* |
2413 | * Resume input after a call to snd_usbmidi_input_stop(). |
2414 | */ |
2415 | void snd_usbmidi_input_start(struct list_head *p) |
2416 | { |
2417 | struct snd_usb_midi *umidi; |
2418 | int i; |
2419 | |
2420 | umidi = list_entry(p, struct snd_usb_midi, list); |
2421 | if (umidi->input_running || !umidi->opened[1]) |
2422 | return; |
2423 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) |
2424 | snd_usbmidi_input_start_ep(umidi, ep: umidi->endpoints[i].in); |
2425 | umidi->input_running = 1; |
2426 | } |
2427 | EXPORT_SYMBOL(snd_usbmidi_input_start); |
2428 | |
2429 | /* |
2430 | * Prepare for suspend. Typically called from the USB suspend callback. |
2431 | */ |
2432 | void snd_usbmidi_suspend(struct list_head *p) |
2433 | { |
2434 | struct snd_usb_midi *umidi; |
2435 | |
2436 | umidi = list_entry(p, struct snd_usb_midi, list); |
2437 | mutex_lock(&umidi->mutex); |
2438 | snd_usbmidi_input_stop(p); |
2439 | mutex_unlock(lock: &umidi->mutex); |
2440 | } |
2441 | EXPORT_SYMBOL(snd_usbmidi_suspend); |
2442 | |
2443 | /* |
2444 | * Resume. Typically called from the USB resume callback. |
2445 | */ |
2446 | void snd_usbmidi_resume(struct list_head *p) |
2447 | { |
2448 | struct snd_usb_midi *umidi; |
2449 | |
2450 | umidi = list_entry(p, struct snd_usb_midi, list); |
2451 | mutex_lock(&umidi->mutex); |
2452 | snd_usbmidi_input_start(p); |
2453 | mutex_unlock(lock: &umidi->mutex); |
2454 | } |
2455 | EXPORT_SYMBOL(snd_usbmidi_resume); |
2456 | |
2457 | /* |
2458 | * Creates and registers everything needed for a MIDI streaming interface. |
2459 | */ |
2460 | int __snd_usbmidi_create(struct snd_card *card, |
2461 | struct usb_interface *iface, |
2462 | struct list_head *midi_list, |
2463 | const struct snd_usb_audio_quirk *quirk, |
2464 | unsigned int usb_id, |
2465 | unsigned int *num_rawmidis) |
2466 | { |
2467 | struct snd_usb_midi *umidi; |
2468 | struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS]; |
2469 | int out_ports, in_ports; |
2470 | int i, err; |
2471 | |
2472 | umidi = kzalloc(size: sizeof(*umidi), GFP_KERNEL); |
2473 | if (!umidi) |
2474 | return -ENOMEM; |
2475 | umidi->dev = interface_to_usbdev(iface); |
2476 | umidi->card = card; |
2477 | umidi->iface = iface; |
2478 | umidi->quirk = quirk; |
2479 | umidi->usb_protocol_ops = &snd_usbmidi_standard_ops; |
2480 | if (num_rawmidis) |
2481 | umidi->next_midi_device = *num_rawmidis; |
2482 | spin_lock_init(&umidi->disc_lock); |
2483 | init_rwsem(&umidi->disc_rwsem); |
2484 | mutex_init(&umidi->mutex); |
2485 | if (!usb_id) |
2486 | usb_id = USB_ID(le16_to_cpu(umidi->dev->descriptor.idVendor), |
2487 | le16_to_cpu(umidi->dev->descriptor.idProduct)); |
2488 | umidi->usb_id = usb_id; |
2489 | timer_setup(&umidi->error_timer, snd_usbmidi_error_timer, 0); |
2490 | |
2491 | /* detect the endpoint(s) to use */ |
2492 | memset(endpoints, 0, sizeof(endpoints)); |
2493 | switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) { |
2494 | case QUIRK_MIDI_STANDARD_INTERFACE: |
2495 | err = snd_usbmidi_get_ms_info(umidi, endpoints); |
2496 | if (umidi->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */ |
2497 | umidi->usb_protocol_ops = |
2498 | &snd_usbmidi_maudio_broken_running_status_ops; |
2499 | break; |
2500 | case QUIRK_MIDI_US122L: |
2501 | umidi->usb_protocol_ops = &snd_usbmidi_122l_ops; |
2502 | fallthrough; |
2503 | case QUIRK_MIDI_FIXED_ENDPOINT: |
2504 | memcpy(&endpoints[0], quirk->data, |
2505 | sizeof(struct snd_usb_midi_endpoint_info)); |
2506 | err = snd_usbmidi_detect_endpoints(umidi, endpoint: &endpoints[0], max_endpoints: 1); |
2507 | break; |
2508 | case QUIRK_MIDI_YAMAHA: |
2509 | err = snd_usbmidi_detect_yamaha(umidi, endpoint: &endpoints[0]); |
2510 | break; |
2511 | case QUIRK_MIDI_ROLAND: |
2512 | err = snd_usbmidi_detect_roland(umidi, endpoint: &endpoints[0]); |
2513 | break; |
2514 | case QUIRK_MIDI_MIDIMAN: |
2515 | umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops; |
2516 | memcpy(&endpoints[0], quirk->data, |
2517 | sizeof(struct snd_usb_midi_endpoint_info)); |
2518 | err = 0; |
2519 | break; |
2520 | case QUIRK_MIDI_NOVATION: |
2521 | umidi->usb_protocol_ops = &snd_usbmidi_novation_ops; |
2522 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2523 | break; |
2524 | case QUIRK_MIDI_RAW_BYTES: |
2525 | umidi->usb_protocol_ops = &snd_usbmidi_raw_ops; |
2526 | /* |
2527 | * Interface 1 contains isochronous endpoints, but with the same |
2528 | * numbers as in interface 0. Since it is interface 1 that the |
2529 | * USB core has most recently seen, these descriptors are now |
2530 | * associated with the endpoint numbers. This will foul up our |
2531 | * attempts to submit bulk/interrupt URBs to the endpoints in |
2532 | * interface 0, so we have to make sure that the USB core looks |
2533 | * again at interface 0 by calling usb_set_interface() on it. |
2534 | */ |
2535 | if (umidi->usb_id == USB_ID(0x07fd, 0x0001)) /* MOTU Fastlane */ |
2536 | usb_set_interface(dev: umidi->dev, ifnum: 0, alternate: 0); |
2537 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2538 | break; |
2539 | case QUIRK_MIDI_EMAGIC: |
2540 | umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops; |
2541 | memcpy(&endpoints[0], quirk->data, |
2542 | sizeof(struct snd_usb_midi_endpoint_info)); |
2543 | err = snd_usbmidi_detect_endpoints(umidi, endpoint: &endpoints[0], max_endpoints: 1); |
2544 | break; |
2545 | case QUIRK_MIDI_CME: |
2546 | umidi->usb_protocol_ops = &snd_usbmidi_cme_ops; |
2547 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2548 | break; |
2549 | case QUIRK_MIDI_AKAI: |
2550 | umidi->usb_protocol_ops = &snd_usbmidi_akai_ops; |
2551 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2552 | /* endpoint 1 is input-only */ |
2553 | endpoints[1].out_cables = 0; |
2554 | break; |
2555 | case QUIRK_MIDI_FTDI: |
2556 | umidi->usb_protocol_ops = &snd_usbmidi_ftdi_ops; |
2557 | |
2558 | /* set baud rate to 31250 (48 MHz / 16 / 96) */ |
2559 | err = usb_control_msg(dev: umidi->dev, usb_sndctrlpipe(umidi->dev, 0), |
2560 | request: 3, requesttype: 0x40, value: 0x60, index: 0, NULL, size: 0, timeout: 1000); |
2561 | if (err < 0) |
2562 | break; |
2563 | |
2564 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2565 | break; |
2566 | case QUIRK_MIDI_CH345: |
2567 | umidi->usb_protocol_ops = &snd_usbmidi_ch345_broken_sysex_ops; |
2568 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2569 | break; |
2570 | default: |
2571 | dev_err(&umidi->dev->dev, "invalid quirk type %d\n" , |
2572 | quirk->type); |
2573 | err = -ENXIO; |
2574 | break; |
2575 | } |
2576 | if (err < 0) |
2577 | goto free_midi; |
2578 | |
2579 | /* create rawmidi device */ |
2580 | out_ports = 0; |
2581 | in_ports = 0; |
2582 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
2583 | out_ports += hweight16(endpoints[i].out_cables); |
2584 | in_ports += hweight16(endpoints[i].in_cables); |
2585 | } |
2586 | err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports); |
2587 | if (err < 0) |
2588 | goto free_midi; |
2589 | |
2590 | /* create endpoint/port structures */ |
2591 | if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN) |
2592 | err = snd_usbmidi_create_endpoints_midiman(umidi, endpoint: &endpoints[0]); |
2593 | else |
2594 | err = snd_usbmidi_create_endpoints(umidi, endpoints); |
2595 | if (err < 0) |
2596 | goto exit; |
2597 | |
2598 | usb_autopm_get_interface_no_resume(intf: umidi->iface); |
2599 | |
2600 | list_add_tail(new: &umidi->list, head: midi_list); |
2601 | if (num_rawmidis) |
2602 | *num_rawmidis = umidi->next_midi_device; |
2603 | return 0; |
2604 | |
2605 | free_midi: |
2606 | kfree(objp: umidi); |
2607 | exit: |
2608 | return err; |
2609 | } |
2610 | EXPORT_SYMBOL(__snd_usbmidi_create); |
2611 | |