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