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1da177e4 LT |
1 | /* |
2 | * usbmidi.c - ALSA USB MIDI driver | |
3 | * | |
4 | * Copyright (c) 2002-2005 Clemens Ladisch | |
5 | * All rights reserved. | |
6 | * | |
7 | * Based on the OSS usb-midi driver by NAGANO Daisuke, | |
8 | * NetBSD's umidi driver by Takuya SHIOZAKI, | |
9 | * the "USB Device Class Definition for MIDI Devices" by Roland | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. The name of the author may not be used to endorse or promote products | |
18 | * derived from this software without specific prior written permission. | |
19 | * | |
20 | * Alternatively, this software may be distributed and/or modified under the | |
21 | * terms of the GNU General Public License as published by the Free Software | |
22 | * Foundation; either version 2 of the License, or (at your option) any later | |
23 | * version. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR | |
29 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
35 | * SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <sound/driver.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/bitops.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/spinlock.h> | |
44 | #include <linux/string.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/slab.h> | |
47 | #include <linux/usb.h> | |
48 | #include <sound/core.h> | |
49 | #include <sound/minors.h> | |
50 | #include <sound/rawmidi.h> | |
51 | #include "usbaudio.h" | |
52 | ||
53 | ||
54 | /* | |
55 | * define this to log all USB packets | |
56 | */ | |
57 | /* #define DUMP_PACKETS */ | |
58 | ||
59 | ||
60 | MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); | |
61 | MODULE_DESCRIPTION("USB Audio/MIDI helper module"); | |
62 | MODULE_LICENSE("Dual BSD/GPL"); | |
63 | ||
64 | ||
65 | struct usb_ms_header_descriptor { | |
66 | __u8 bLength; | |
67 | __u8 bDescriptorType; | |
68 | __u8 bDescriptorSubtype; | |
69 | __u8 bcdMSC[2]; | |
70 | __le16 wTotalLength; | |
71 | } __attribute__ ((packed)); | |
72 | ||
73 | struct usb_ms_endpoint_descriptor { | |
74 | __u8 bLength; | |
75 | __u8 bDescriptorType; | |
76 | __u8 bDescriptorSubtype; | |
77 | __u8 bNumEmbMIDIJack; | |
78 | __u8 baAssocJackID[0]; | |
79 | } __attribute__ ((packed)); | |
80 | ||
81 | typedef struct snd_usb_midi snd_usb_midi_t; | |
82 | typedef struct snd_usb_midi_endpoint snd_usb_midi_endpoint_t; | |
83 | typedef struct snd_usb_midi_out_endpoint snd_usb_midi_out_endpoint_t; | |
84 | typedef struct snd_usb_midi_in_endpoint snd_usb_midi_in_endpoint_t; | |
85 | typedef struct usbmidi_out_port usbmidi_out_port_t; | |
86 | typedef struct usbmidi_in_port usbmidi_in_port_t; | |
87 | ||
88 | struct usb_protocol_ops { | |
89 | void (*input)(snd_usb_midi_in_endpoint_t*, uint8_t*, int); | |
90 | void (*output)(snd_usb_midi_out_endpoint_t*); | |
91 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); | |
92 | void (*init_out_endpoint)(snd_usb_midi_out_endpoint_t*); | |
93 | void (*finish_out_endpoint)(snd_usb_midi_out_endpoint_t*); | |
94 | }; | |
95 | ||
96 | struct snd_usb_midi { | |
97 | snd_usb_audio_t *chip; | |
98 | struct usb_interface *iface; | |
99 | const snd_usb_audio_quirk_t *quirk; | |
100 | snd_rawmidi_t* rmidi; | |
101 | struct usb_protocol_ops* usb_protocol_ops; | |
102 | struct list_head list; | |
103 | ||
104 | struct snd_usb_midi_endpoint { | |
105 | snd_usb_midi_out_endpoint_t *out; | |
106 | snd_usb_midi_in_endpoint_t *in; | |
107 | } endpoints[MIDI_MAX_ENDPOINTS]; | |
108 | unsigned long input_triggered; | |
109 | }; | |
110 | ||
111 | struct snd_usb_midi_out_endpoint { | |
112 | snd_usb_midi_t* umidi; | |
113 | struct urb* urb; | |
114 | int urb_active; | |
115 | int max_transfer; /* size of urb buffer */ | |
116 | struct tasklet_struct tasklet; | |
117 | ||
118 | spinlock_t buffer_lock; | |
119 | ||
120 | struct usbmidi_out_port { | |
121 | snd_usb_midi_out_endpoint_t* ep; | |
122 | snd_rawmidi_substream_t* substream; | |
123 | int active; | |
124 | uint8_t cable; /* cable number << 4 */ | |
125 | uint8_t state; | |
126 | #define STATE_UNKNOWN 0 | |
127 | #define STATE_1PARAM 1 | |
128 | #define STATE_2PARAM_1 2 | |
129 | #define STATE_2PARAM_2 3 | |
130 | #define STATE_SYSEX_0 4 | |
131 | #define STATE_SYSEX_1 5 | |
132 | #define STATE_SYSEX_2 6 | |
133 | uint8_t data[2]; | |
134 | } ports[0x10]; | |
135 | int current_port; | |
136 | }; | |
137 | ||
138 | struct snd_usb_midi_in_endpoint { | |
139 | snd_usb_midi_t* umidi; | |
140 | struct urb* urb; | |
141 | struct usbmidi_in_port { | |
142 | snd_rawmidi_substream_t* substream; | |
143 | } ports[0x10]; | |
144 | int seen_f5; | |
145 | int current_port; | |
146 | }; | |
147 | ||
148 | static void snd_usbmidi_do_output(snd_usb_midi_out_endpoint_t* ep); | |
149 | ||
150 | static const uint8_t snd_usbmidi_cin_length[] = { | |
151 | 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 | |
152 | }; | |
153 | ||
154 | /* | |
155 | * Submits the URB, with error handling. | |
156 | */ | |
157 | static int snd_usbmidi_submit_urb(struct urb* urb, int flags) | |
158 | { | |
159 | int err = usb_submit_urb(urb, flags); | |
160 | if (err < 0 && err != -ENODEV) | |
161 | snd_printk(KERN_ERR "usb_submit_urb: %d\n", err); | |
162 | return err; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Error handling for URB completion functions. | |
167 | */ | |
168 | static int snd_usbmidi_urb_error(int status) | |
169 | { | |
170 | if (status == -ENOENT) | |
171 | return status; /* killed */ | |
172 | if (status == -EILSEQ || | |
173 | status == -ECONNRESET || | |
174 | status == -ETIMEDOUT) | |
175 | return -ENODEV; /* device removed/shutdown */ | |
176 | snd_printk(KERN_ERR "urb status %d\n", status); | |
177 | return 0; /* continue */ | |
178 | } | |
179 | ||
180 | /* | |
181 | * Receives a chunk of MIDI data. | |
182 | */ | |
183 | static void snd_usbmidi_input_data(snd_usb_midi_in_endpoint_t* ep, int portidx, | |
184 | uint8_t* data, int length) | |
185 | { | |
186 | usbmidi_in_port_t* port = &ep->ports[portidx]; | |
187 | ||
188 | if (!port->substream) { | |
189 | snd_printd("unexpected port %d!\n", portidx); | |
190 | return; | |
191 | } | |
192 | if (!test_bit(port->substream->number, &ep->umidi->input_triggered)) | |
193 | return; | |
194 | snd_rawmidi_receive(port->substream, data, length); | |
195 | } | |
196 | ||
197 | #ifdef DUMP_PACKETS | |
198 | static void dump_urb(const char *type, const u8 *data, int length) | |
199 | { | |
200 | snd_printk(KERN_DEBUG "%s packet: [", type); | |
201 | for (; length > 0; ++data, --length) | |
202 | printk(" %02x", *data); | |
203 | printk(" ]\n"); | |
204 | } | |
205 | #else | |
206 | #define dump_urb(type, data, length) /* nothing */ | |
207 | #endif | |
208 | ||
209 | /* | |
210 | * Processes the data read from the device. | |
211 | */ | |
212 | static void snd_usbmidi_in_urb_complete(struct urb* urb, struct pt_regs *regs) | |
213 | { | |
214 | snd_usb_midi_in_endpoint_t* ep = urb->context; | |
215 | ||
216 | if (urb->status == 0) { | |
217 | dump_urb("received", urb->transfer_buffer, urb->actual_length); | |
218 | ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, | |
219 | urb->actual_length); | |
220 | } else { | |
221 | if (snd_usbmidi_urb_error(urb->status) < 0) | |
222 | return; | |
223 | } | |
224 | ||
225 | if (usb_pipe_needs_resubmit(urb->pipe)) { | |
226 | urb->dev = ep->umidi->chip->dev; | |
227 | snd_usbmidi_submit_urb(urb, GFP_ATOMIC); | |
228 | } | |
229 | } | |
230 | ||
231 | static void snd_usbmidi_out_urb_complete(struct urb* urb, struct pt_regs *regs) | |
232 | { | |
233 | snd_usb_midi_out_endpoint_t* ep = urb->context; | |
234 | ||
235 | spin_lock(&ep->buffer_lock); | |
236 | ep->urb_active = 0; | |
237 | spin_unlock(&ep->buffer_lock); | |
238 | if (urb->status < 0) { | |
239 | if (snd_usbmidi_urb_error(urb->status) < 0) | |
240 | return; | |
241 | } | |
242 | snd_usbmidi_do_output(ep); | |
243 | } | |
244 | ||
245 | /* | |
246 | * This is called when some data should be transferred to the device | |
247 | * (from one or more substreams). | |
248 | */ | |
249 | static void snd_usbmidi_do_output(snd_usb_midi_out_endpoint_t* ep) | |
250 | { | |
251 | struct urb* urb = ep->urb; | |
252 | unsigned long flags; | |
253 | ||
254 | spin_lock_irqsave(&ep->buffer_lock, flags); | |
255 | if (ep->urb_active || ep->umidi->chip->shutdown) { | |
256 | spin_unlock_irqrestore(&ep->buffer_lock, flags); | |
257 | return; | |
258 | } | |
259 | ||
260 | urb->transfer_buffer_length = 0; | |
261 | ep->umidi->usb_protocol_ops->output(ep); | |
262 | ||
263 | if (urb->transfer_buffer_length > 0) { | |
264 | dump_urb("sending", urb->transfer_buffer, | |
265 | urb->transfer_buffer_length); | |
266 | urb->dev = ep->umidi->chip->dev; | |
267 | ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0; | |
268 | } | |
269 | spin_unlock_irqrestore(&ep->buffer_lock, flags); | |
270 | } | |
271 | ||
272 | static void snd_usbmidi_out_tasklet(unsigned long data) | |
273 | { | |
274 | snd_usb_midi_out_endpoint_t* ep = (snd_usb_midi_out_endpoint_t *) data; | |
275 | ||
276 | snd_usbmidi_do_output(ep); | |
277 | } | |
278 | ||
279 | /* helper function to send static data that may not DMA-able */ | |
280 | static int send_bulk_static_data(snd_usb_midi_out_endpoint_t* ep, | |
281 | const void *data, int len) | |
282 | { | |
283 | int err; | |
284 | void *buf = kmalloc(len, GFP_KERNEL); | |
285 | if (!buf) | |
286 | return -ENOMEM; | |
287 | memcpy(buf, data, len); | |
288 | dump_urb("sending", buf, len); | |
289 | err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len, | |
290 | NULL, 250); | |
291 | kfree(buf); | |
292 | return err; | |
293 | } | |
294 | ||
295 | /* | |
296 | * Standard USB MIDI protocol: see the spec. | |
297 | * Midiman protocol: like the standard protocol, but the control byte is the | |
298 | * fourth byte in each packet, and uses length instead of CIN. | |
299 | */ | |
300 | ||
301 | static void snd_usbmidi_standard_input(snd_usb_midi_in_endpoint_t* ep, | |
302 | uint8_t* buffer, int buffer_length) | |
303 | { | |
304 | int i; | |
305 | ||
306 | for (i = 0; i + 3 < buffer_length; i += 4) | |
307 | if (buffer[i] != 0) { | |
308 | int cable = buffer[i] >> 4; | |
309 | int length = snd_usbmidi_cin_length[buffer[i] & 0x0f]; | |
310 | snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); | |
311 | } | |
312 | } | |
313 | ||
314 | static void snd_usbmidi_midiman_input(snd_usb_midi_in_endpoint_t* ep, | |
315 | uint8_t* buffer, int buffer_length) | |
316 | { | |
317 | int i; | |
318 | ||
319 | for (i = 0; i + 3 < buffer_length; i += 4) | |
320 | if (buffer[i + 3] != 0) { | |
321 | int port = buffer[i + 3] >> 4; | |
322 | int length = buffer[i + 3] & 3; | |
323 | snd_usbmidi_input_data(ep, port, &buffer[i], length); | |
324 | } | |
325 | } | |
326 | ||
327 | /* | |
328 | * Adds one USB MIDI packet to the output buffer. | |
329 | */ | |
330 | static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0, | |
331 | uint8_t p1, uint8_t p2, uint8_t p3) | |
332 | { | |
333 | ||
334 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; | |
335 | buf[0] = p0; | |
336 | buf[1] = p1; | |
337 | buf[2] = p2; | |
338 | buf[3] = p3; | |
339 | urb->transfer_buffer_length += 4; | |
340 | } | |
341 | ||
342 | /* | |
343 | * Adds one Midiman packet to the output buffer. | |
344 | */ | |
345 | static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0, | |
346 | uint8_t p1, uint8_t p2, uint8_t p3) | |
347 | { | |
348 | ||
349 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; | |
350 | buf[0] = p1; | |
351 | buf[1] = p2; | |
352 | buf[2] = p3; | |
353 | buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f]; | |
354 | urb->transfer_buffer_length += 4; | |
355 | } | |
356 | ||
357 | /* | |
358 | * Converts MIDI commands to USB MIDI packets. | |
359 | */ | |
360 | static void snd_usbmidi_transmit_byte(usbmidi_out_port_t* port, | |
361 | uint8_t b, struct urb* urb) | |
362 | { | |
363 | uint8_t p0 = port->cable; | |
364 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) = | |
365 | port->ep->umidi->usb_protocol_ops->output_packet; | |
366 | ||
367 | if (b >= 0xf8) { | |
368 | output_packet(urb, p0 | 0x0f, b, 0, 0); | |
369 | } else if (b >= 0xf0) { | |
370 | switch (b) { | |
371 | case 0xf0: | |
372 | port->data[0] = b; | |
373 | port->state = STATE_SYSEX_1; | |
374 | break; | |
375 | case 0xf1: | |
376 | case 0xf3: | |
377 | port->data[0] = b; | |
378 | port->state = STATE_1PARAM; | |
379 | break; | |
380 | case 0xf2: | |
381 | port->data[0] = b; | |
382 | port->state = STATE_2PARAM_1; | |
383 | break; | |
384 | case 0xf4: | |
385 | case 0xf5: | |
386 | port->state = STATE_UNKNOWN; | |
387 | break; | |
388 | case 0xf6: | |
389 | output_packet(urb, p0 | 0x05, 0xf6, 0, 0); | |
390 | port->state = STATE_UNKNOWN; | |
391 | break; | |
392 | case 0xf7: | |
393 | switch (port->state) { | |
394 | case STATE_SYSEX_0: | |
395 | output_packet(urb, p0 | 0x05, 0xf7, 0, 0); | |
396 | break; | |
397 | case STATE_SYSEX_1: | |
398 | output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0); | |
399 | break; | |
400 | case STATE_SYSEX_2: | |
401 | output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7); | |
402 | break; | |
403 | } | |
404 | port->state = STATE_UNKNOWN; | |
405 | break; | |
406 | } | |
407 | } else if (b >= 0x80) { | |
408 | port->data[0] = b; | |
409 | if (b >= 0xc0 && b <= 0xdf) | |
410 | port->state = STATE_1PARAM; | |
411 | else | |
412 | port->state = STATE_2PARAM_1; | |
413 | } else { /* b < 0x80 */ | |
414 | switch (port->state) { | |
415 | case STATE_1PARAM: | |
416 | if (port->data[0] < 0xf0) { | |
417 | p0 |= port->data[0] >> 4; | |
418 | } else { | |
419 | p0 |= 0x02; | |
420 | port->state = STATE_UNKNOWN; | |
421 | } | |
422 | output_packet(urb, p0, port->data[0], b, 0); | |
423 | break; | |
424 | case STATE_2PARAM_1: | |
425 | port->data[1] = b; | |
426 | port->state = STATE_2PARAM_2; | |
427 | break; | |
428 | case STATE_2PARAM_2: | |
429 | if (port->data[0] < 0xf0) { | |
430 | p0 |= port->data[0] >> 4; | |
431 | port->state = STATE_2PARAM_1; | |
432 | } else { | |
433 | p0 |= 0x03; | |
434 | port->state = STATE_UNKNOWN; | |
435 | } | |
436 | output_packet(urb, p0, port->data[0], port->data[1], b); | |
437 | break; | |
438 | case STATE_SYSEX_0: | |
439 | port->data[0] = b; | |
440 | port->state = STATE_SYSEX_1; | |
441 | break; | |
442 | case STATE_SYSEX_1: | |
443 | port->data[1] = b; | |
444 | port->state = STATE_SYSEX_2; | |
445 | break; | |
446 | case STATE_SYSEX_2: | |
447 | output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b); | |
448 | port->state = STATE_SYSEX_0; | |
449 | break; | |
450 | } | |
451 | } | |
452 | } | |
453 | ||
454 | static void snd_usbmidi_standard_output(snd_usb_midi_out_endpoint_t* ep) | |
455 | { | |
456 | struct urb* urb = ep->urb; | |
457 | int p; | |
458 | ||
459 | /* FIXME: lower-numbered ports can starve higher-numbered ports */ | |
460 | for (p = 0; p < 0x10; ++p) { | |
461 | usbmidi_out_port_t* port = &ep->ports[p]; | |
462 | if (!port->active) | |
463 | continue; | |
464 | while (urb->transfer_buffer_length + 3 < ep->max_transfer) { | |
465 | uint8_t b; | |
466 | if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) { | |
467 | port->active = 0; | |
468 | break; | |
469 | } | |
470 | snd_usbmidi_transmit_byte(port, b, urb); | |
471 | } | |
472 | } | |
473 | } | |
474 | ||
475 | static struct usb_protocol_ops snd_usbmidi_standard_ops = { | |
476 | .input = snd_usbmidi_standard_input, | |
477 | .output = snd_usbmidi_standard_output, | |
478 | .output_packet = snd_usbmidi_output_standard_packet, | |
479 | }; | |
480 | ||
481 | static struct usb_protocol_ops snd_usbmidi_midiman_ops = { | |
482 | .input = snd_usbmidi_midiman_input, | |
483 | .output = snd_usbmidi_standard_output, | |
484 | .output_packet = snd_usbmidi_output_midiman_packet, | |
485 | }; | |
486 | ||
487 | /* | |
488 | * Novation USB MIDI protocol: number of data bytes is in the first byte | |
489 | * (when receiving) (+1!) or in the second byte (when sending); data begins | |
490 | * at the third byte. | |
491 | */ | |
492 | ||
493 | static void snd_usbmidi_novation_input(snd_usb_midi_in_endpoint_t* ep, | |
494 | uint8_t* buffer, int buffer_length) | |
495 | { | |
496 | if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1) | |
497 | return; | |
498 | snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1); | |
499 | } | |
500 | ||
501 | static void snd_usbmidi_novation_output(snd_usb_midi_out_endpoint_t* ep) | |
502 | { | |
503 | uint8_t* transfer_buffer; | |
504 | int count; | |
505 | ||
506 | if (!ep->ports[0].active) | |
507 | return; | |
508 | transfer_buffer = ep->urb->transfer_buffer; | |
509 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
510 | &transfer_buffer[2], | |
511 | ep->max_transfer - 2); | |
512 | if (count < 1) { | |
513 | ep->ports[0].active = 0; | |
514 | return; | |
515 | } | |
516 | transfer_buffer[0] = 0; | |
517 | transfer_buffer[1] = count; | |
518 | ep->urb->transfer_buffer_length = 2 + count; | |
519 | } | |
520 | ||
521 | static struct usb_protocol_ops snd_usbmidi_novation_ops = { | |
522 | .input = snd_usbmidi_novation_input, | |
523 | .output = snd_usbmidi_novation_output, | |
524 | }; | |
525 | ||
526 | /* | |
527 | * Mark of the Unicorn USB MIDI protocol: raw MIDI. | |
528 | */ | |
529 | ||
530 | static void snd_usbmidi_motu_input(snd_usb_midi_in_endpoint_t* ep, | |
531 | uint8_t* buffer, int buffer_length) | |
532 | { | |
533 | snd_usbmidi_input_data(ep, 0, buffer, buffer_length); | |
534 | } | |
535 | ||
536 | static void snd_usbmidi_motu_output(snd_usb_midi_out_endpoint_t* ep) | |
537 | { | |
538 | int count; | |
539 | ||
540 | if (!ep->ports[0].active) | |
541 | return; | |
542 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
543 | ep->urb->transfer_buffer, | |
544 | ep->max_transfer); | |
545 | if (count < 1) { | |
546 | ep->ports[0].active = 0; | |
547 | return; | |
548 | } | |
549 | ep->urb->transfer_buffer_length = count; | |
550 | } | |
551 | ||
552 | static struct usb_protocol_ops snd_usbmidi_motu_ops = { | |
553 | .input = snd_usbmidi_motu_input, | |
554 | .output = snd_usbmidi_motu_output, | |
555 | }; | |
556 | ||
557 | /* | |
558 | * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching. | |
559 | */ | |
560 | ||
561 | static void snd_usbmidi_emagic_init_out(snd_usb_midi_out_endpoint_t* ep) | |
562 | { | |
563 | static const u8 init_data[] = { | |
564 | /* initialization magic: "get version" */ | |
565 | 0xf0, | |
566 | 0x00, 0x20, 0x31, /* Emagic */ | |
567 | 0x64, /* Unitor8 */ | |
568 | 0x0b, /* version number request */ | |
569 | 0x00, /* command version */ | |
570 | 0x00, /* EEPROM, box 0 */ | |
571 | 0xf7 | |
572 | }; | |
573 | send_bulk_static_data(ep, init_data, sizeof(init_data)); | |
574 | /* while we're at it, pour on more magic */ | |
575 | send_bulk_static_data(ep, init_data, sizeof(init_data)); | |
576 | } | |
577 | ||
578 | static void snd_usbmidi_emagic_finish_out(snd_usb_midi_out_endpoint_t* ep) | |
579 | { | |
580 | static const u8 finish_data[] = { | |
581 | /* switch to patch mode with last preset */ | |
582 | 0xf0, | |
583 | 0x00, 0x20, 0x31, /* Emagic */ | |
584 | 0x64, /* Unitor8 */ | |
585 | 0x10, /* patch switch command */ | |
586 | 0x00, /* command version */ | |
587 | 0x7f, /* to all boxes */ | |
588 | 0x40, /* last preset in EEPROM */ | |
589 | 0xf7 | |
590 | }; | |
591 | send_bulk_static_data(ep, finish_data, sizeof(finish_data)); | |
592 | } | |
593 | ||
594 | static void snd_usbmidi_emagic_input(snd_usb_midi_in_endpoint_t* ep, | |
595 | uint8_t* buffer, int buffer_length) | |
596 | { | |
597 | /* ignore padding bytes at end of buffer */ | |
598 | while (buffer_length > 0 && buffer[buffer_length - 1] == 0xff) | |
599 | --buffer_length; | |
600 | ||
601 | /* handle F5 at end of last buffer */ | |
602 | if (ep->seen_f5) | |
603 | goto switch_port; | |
604 | ||
605 | while (buffer_length > 0) { | |
606 | int i; | |
607 | ||
608 | /* determine size of data until next F5 */ | |
609 | for (i = 0; i < buffer_length; ++i) | |
610 | if (buffer[i] == 0xf5) | |
611 | break; | |
612 | snd_usbmidi_input_data(ep, ep->current_port, buffer, i); | |
613 | buffer += i; | |
614 | buffer_length -= i; | |
615 | ||
616 | if (buffer_length <= 0) | |
617 | break; | |
618 | /* assert(buffer[0] == 0xf5); */ | |
619 | ep->seen_f5 = 1; | |
620 | ++buffer; | |
621 | --buffer_length; | |
622 | ||
623 | switch_port: | |
624 | if (buffer_length <= 0) | |
625 | break; | |
626 | if (buffer[0] < 0x80) { | |
627 | ep->current_port = (buffer[0] - 1) & 15; | |
628 | ++buffer; | |
629 | --buffer_length; | |
630 | } | |
631 | ep->seen_f5 = 0; | |
632 | } | |
633 | } | |
634 | ||
635 | static void snd_usbmidi_emagic_output(snd_usb_midi_out_endpoint_t* ep) | |
636 | { | |
637 | int port0 = ep->current_port; | |
638 | uint8_t* buf = ep->urb->transfer_buffer; | |
639 | int buf_free = ep->max_transfer; | |
640 | int length, i; | |
641 | ||
642 | for (i = 0; i < 0x10; ++i) { | |
643 | /* round-robin, starting at the last current port */ | |
644 | int portnum = (port0 + i) & 15; | |
645 | usbmidi_out_port_t* port = &ep->ports[portnum]; | |
646 | ||
647 | if (!port->active) | |
648 | continue; | |
649 | if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) { | |
650 | port->active = 0; | |
651 | continue; | |
652 | } | |
653 | ||
654 | if (portnum != ep->current_port) { | |
655 | if (buf_free < 2) | |
656 | break; | |
657 | ep->current_port = portnum; | |
658 | buf[0] = 0xf5; | |
659 | buf[1] = (portnum + 1) & 15; | |
660 | buf += 2; | |
661 | buf_free -= 2; | |
662 | } | |
663 | ||
664 | if (buf_free < 1) | |
665 | break; | |
666 | length = snd_rawmidi_transmit(port->substream, buf, buf_free); | |
667 | if (length > 0) { | |
668 | buf += length; | |
669 | buf_free -= length; | |
670 | if (buf_free < 1) | |
671 | break; | |
672 | } | |
673 | } | |
674 | ep->urb->transfer_buffer_length = ep->max_transfer - buf_free; | |
675 | } | |
676 | ||
677 | static struct usb_protocol_ops snd_usbmidi_emagic_ops = { | |
678 | .input = snd_usbmidi_emagic_input, | |
679 | .output = snd_usbmidi_emagic_output, | |
680 | .init_out_endpoint = snd_usbmidi_emagic_init_out, | |
681 | .finish_out_endpoint = snd_usbmidi_emagic_finish_out, | |
682 | }; | |
683 | ||
684 | ||
685 | static int snd_usbmidi_output_open(snd_rawmidi_substream_t* substream) | |
686 | { | |
687 | snd_usb_midi_t* umidi = substream->rmidi->private_data; | |
688 | usbmidi_out_port_t* port = NULL; | |
689 | int i, j; | |
690 | ||
691 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
692 | if (umidi->endpoints[i].out) | |
693 | for (j = 0; j < 0x10; ++j) | |
694 | if (umidi->endpoints[i].out->ports[j].substream == substream) { | |
695 | port = &umidi->endpoints[i].out->ports[j]; | |
696 | break; | |
697 | } | |
698 | if (!port) { | |
699 | snd_BUG(); | |
700 | return -ENXIO; | |
701 | } | |
702 | substream->runtime->private_data = port; | |
703 | port->state = STATE_UNKNOWN; | |
704 | return 0; | |
705 | } | |
706 | ||
707 | static int snd_usbmidi_output_close(snd_rawmidi_substream_t* substream) | |
708 | { | |
709 | return 0; | |
710 | } | |
711 | ||
712 | static void snd_usbmidi_output_trigger(snd_rawmidi_substream_t* substream, int up) | |
713 | { | |
714 | usbmidi_out_port_t* port = (usbmidi_out_port_t*)substream->runtime->private_data; | |
715 | ||
716 | port->active = up; | |
717 | if (up) { | |
718 | if (port->ep->umidi->chip->shutdown) { | |
719 | /* gobble up remaining bytes to prevent wait in | |
720 | * snd_rawmidi_drain_output */ | |
721 | while (!snd_rawmidi_transmit_empty(substream)) | |
722 | snd_rawmidi_transmit_ack(substream, 1); | |
723 | return; | |
724 | } | |
725 | tasklet_hi_schedule(&port->ep->tasklet); | |
726 | } | |
727 | } | |
728 | ||
729 | static int snd_usbmidi_input_open(snd_rawmidi_substream_t* substream) | |
730 | { | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int snd_usbmidi_input_close(snd_rawmidi_substream_t* substream) | |
735 | { | |
736 | return 0; | |
737 | } | |
738 | ||
739 | static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t* substream, int up) | |
740 | { | |
741 | snd_usb_midi_t* umidi = substream->rmidi->private_data; | |
742 | ||
743 | if (up) | |
744 | set_bit(substream->number, &umidi->input_triggered); | |
745 | else | |
746 | clear_bit(substream->number, &umidi->input_triggered); | |
747 | } | |
748 | ||
749 | static snd_rawmidi_ops_t snd_usbmidi_output_ops = { | |
750 | .open = snd_usbmidi_output_open, | |
751 | .close = snd_usbmidi_output_close, | |
752 | .trigger = snd_usbmidi_output_trigger, | |
753 | }; | |
754 | ||
755 | static snd_rawmidi_ops_t snd_usbmidi_input_ops = { | |
756 | .open = snd_usbmidi_input_open, | |
757 | .close = snd_usbmidi_input_close, | |
758 | .trigger = snd_usbmidi_input_trigger | |
759 | }; | |
760 | ||
761 | /* | |
762 | * Frees an input endpoint. | |
763 | * May be called when ep hasn't been initialized completely. | |
764 | */ | |
765 | static void snd_usbmidi_in_endpoint_delete(snd_usb_midi_in_endpoint_t* ep) | |
766 | { | |
767 | if (ep->urb) { | |
768 | kfree(ep->urb->transfer_buffer); | |
769 | usb_free_urb(ep->urb); | |
770 | } | |
771 | kfree(ep); | |
772 | } | |
773 | ||
774 | /* | |
775 | * Creates an input endpoint. | |
776 | */ | |
777 | static int snd_usbmidi_in_endpoint_create(snd_usb_midi_t* umidi, | |
778 | snd_usb_midi_endpoint_info_t* ep_info, | |
779 | snd_usb_midi_endpoint_t* rep) | |
780 | { | |
781 | snd_usb_midi_in_endpoint_t* ep; | |
782 | void* buffer; | |
783 | unsigned int pipe; | |
784 | int length; | |
785 | ||
786 | rep->in = NULL; | |
787 | ep = kcalloc(1, sizeof(*ep), GFP_KERNEL); | |
788 | if (!ep) | |
789 | return -ENOMEM; | |
790 | ep->umidi = umidi; | |
791 | ||
792 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); | |
793 | if (!ep->urb) { | |
794 | snd_usbmidi_in_endpoint_delete(ep); | |
795 | return -ENOMEM; | |
796 | } | |
797 | if (ep_info->in_interval) | |
798 | pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep); | |
799 | else | |
800 | pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep); | |
801 | length = usb_maxpacket(umidi->chip->dev, pipe, 0); | |
802 | buffer = kmalloc(length, GFP_KERNEL); | |
803 | if (!buffer) { | |
804 | snd_usbmidi_in_endpoint_delete(ep); | |
805 | return -ENOMEM; | |
806 | } | |
807 | if (ep_info->in_interval) | |
808 | usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, length, | |
809 | snd_usb_complete_callback(snd_usbmidi_in_urb_complete), | |
810 | ep, ep_info->in_interval); | |
811 | else | |
812 | usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, length, | |
813 | snd_usb_complete_callback(snd_usbmidi_in_urb_complete), | |
814 | ep); | |
815 | ||
816 | rep->in = ep; | |
817 | return 0; | |
818 | } | |
819 | ||
820 | static unsigned int snd_usbmidi_count_bits(unsigned int x) | |
821 | { | |
822 | unsigned int bits = 0; | |
823 | ||
824 | for (; x; x >>= 1) | |
825 | bits += x & 1; | |
826 | return bits; | |
827 | } | |
828 | ||
829 | /* | |
830 | * Frees an output endpoint. | |
831 | * May be called when ep hasn't been initialized completely. | |
832 | */ | |
833 | static void snd_usbmidi_out_endpoint_delete(snd_usb_midi_out_endpoint_t* ep) | |
834 | { | |
835 | if (ep->tasklet.func) | |
836 | tasklet_kill(&ep->tasklet); | |
837 | if (ep->urb) { | |
838 | kfree(ep->urb->transfer_buffer); | |
839 | usb_free_urb(ep->urb); | |
840 | } | |
841 | kfree(ep); | |
842 | } | |
843 | ||
844 | /* | |
845 | * Creates an output endpoint, and initializes output ports. | |
846 | */ | |
847 | static int snd_usbmidi_out_endpoint_create(snd_usb_midi_t* umidi, | |
848 | snd_usb_midi_endpoint_info_t* ep_info, | |
849 | snd_usb_midi_endpoint_t* rep) | |
850 | { | |
851 | snd_usb_midi_out_endpoint_t* ep; | |
852 | int i; | |
853 | unsigned int pipe; | |
854 | void* buffer; | |
855 | ||
856 | rep->out = NULL; | |
857 | ep = kcalloc(1, sizeof(*ep), GFP_KERNEL); | |
858 | if (!ep) | |
859 | return -ENOMEM; | |
860 | ep->umidi = umidi; | |
861 | ||
862 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); | |
863 | if (!ep->urb) { | |
864 | snd_usbmidi_out_endpoint_delete(ep); | |
865 | return -ENOMEM; | |
866 | } | |
867 | /* we never use interrupt output pipes */ | |
868 | pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep); | |
869 | ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1); | |
870 | buffer = kmalloc(ep->max_transfer, GFP_KERNEL); | |
871 | if (!buffer) { | |
872 | snd_usbmidi_out_endpoint_delete(ep); | |
873 | return -ENOMEM; | |
874 | } | |
875 | usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, | |
876 | ep->max_transfer, | |
877 | snd_usb_complete_callback(snd_usbmidi_out_urb_complete), ep); | |
878 | ||
879 | spin_lock_init(&ep->buffer_lock); | |
880 | tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep); | |
881 | ||
882 | for (i = 0; i < 0x10; ++i) | |
883 | if (ep_info->out_cables & (1 << i)) { | |
884 | ep->ports[i].ep = ep; | |
885 | ep->ports[i].cable = i << 4; | |
886 | } | |
887 | ||
888 | if (umidi->usb_protocol_ops->init_out_endpoint) | |
889 | umidi->usb_protocol_ops->init_out_endpoint(ep); | |
890 | ||
891 | rep->out = ep; | |
892 | return 0; | |
893 | } | |
894 | ||
895 | /* | |
896 | * Frees everything. | |
897 | */ | |
898 | static void snd_usbmidi_free(snd_usb_midi_t* umidi) | |
899 | { | |
900 | int i; | |
901 | ||
902 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
903 | snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i]; | |
904 | if (ep->out) | |
905 | snd_usbmidi_out_endpoint_delete(ep->out); | |
906 | if (ep->in) | |
907 | snd_usbmidi_in_endpoint_delete(ep->in); | |
908 | } | |
909 | kfree(umidi); | |
910 | } | |
911 | ||
912 | /* | |
913 | * Unlinks all URBs (must be done before the usb_device is deleted). | |
914 | */ | |
ee733397 | 915 | void snd_usbmidi_disconnect(struct list_head* p) |
1da177e4 LT |
916 | { |
917 | snd_usb_midi_t* umidi; | |
918 | int i; | |
919 | ||
920 | umidi = list_entry(p, snd_usb_midi_t, list); | |
921 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
922 | snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i]; | |
923 | if (ep->out && ep->out->urb) { | |
924 | usb_kill_urb(ep->out->urb); | |
925 | if (umidi->usb_protocol_ops->finish_out_endpoint) | |
926 | umidi->usb_protocol_ops->finish_out_endpoint(ep->out); | |
927 | } | |
928 | if (ep->in && ep->in->urb) | |
929 | usb_kill_urb(ep->in->urb); | |
930 | } | |
931 | } | |
932 | ||
933 | static void snd_usbmidi_rawmidi_free(snd_rawmidi_t* rmidi) | |
934 | { | |
935 | snd_usb_midi_t* umidi = rmidi->private_data; | |
936 | snd_usbmidi_free(umidi); | |
937 | } | |
938 | ||
939 | static snd_rawmidi_substream_t* snd_usbmidi_find_substream(snd_usb_midi_t* umidi, | |
940 | int stream, int number) | |
941 | { | |
942 | struct list_head* list; | |
943 | ||
944 | list_for_each(list, &umidi->rmidi->streams[stream].substreams) { | |
945 | snd_rawmidi_substream_t* substream = list_entry(list, snd_rawmidi_substream_t, list); | |
946 | if (substream->number == number) | |
947 | return substream; | |
948 | } | |
949 | return NULL; | |
950 | } | |
951 | ||
952 | /* | |
953 | * This list specifies names for ports that do not fit into the standard | |
954 | * "(product) MIDI (n)" schema because they aren't external MIDI ports, | |
955 | * such as internal control or synthesizer ports. | |
956 | */ | |
957 | static struct { | |
27d10f56 | 958 | u32 id; |
1da177e4 LT |
959 | int port; |
960 | const char *name_format; | |
961 | } snd_usbmidi_port_names[] = { | |
962 | /* Roland UA-100 */ | |
27d10f56 | 963 | { USB_ID(0x0582, 0x0000), 2, "%s Control" }, |
1da177e4 | 964 | /* Roland SC-8850 */ |
27d10f56 CL |
965 | { USB_ID(0x0582, 0x0003), 0, "%s Part A" }, |
966 | { USB_ID(0x0582, 0x0003), 1, "%s Part B" }, | |
967 | { USB_ID(0x0582, 0x0003), 2, "%s Part C" }, | |
968 | { USB_ID(0x0582, 0x0003), 3, "%s Part D" }, | |
969 | { USB_ID(0x0582, 0x0003), 4, "%s MIDI 1" }, | |
970 | { USB_ID(0x0582, 0x0003), 5, "%s MIDI 2" }, | |
1da177e4 | 971 | /* Roland U-8 */ |
27d10f56 CL |
972 | { USB_ID(0x0582, 0x0004), 0, "%s MIDI" }, |
973 | { USB_ID(0x0582, 0x0004), 1, "%s Control" }, | |
1da177e4 | 974 | /* Roland SC-8820 */ |
27d10f56 CL |
975 | { USB_ID(0x0582, 0x0007), 0, "%s Part A" }, |
976 | { USB_ID(0x0582, 0x0007), 1, "%s Part B" }, | |
977 | { USB_ID(0x0582, 0x0007), 2, "%s MIDI" }, | |
1da177e4 | 978 | /* Roland SK-500 */ |
27d10f56 CL |
979 | { USB_ID(0x0582, 0x000b), 0, "%s Part A" }, |
980 | { USB_ID(0x0582, 0x000b), 1, "%s Part B" }, | |
981 | { USB_ID(0x0582, 0x000b), 2, "%s MIDI" }, | |
1da177e4 | 982 | /* Roland SC-D70 */ |
27d10f56 CL |
983 | { USB_ID(0x0582, 0x000c), 0, "%s Part A" }, |
984 | { USB_ID(0x0582, 0x000c), 1, "%s Part B" }, | |
985 | { USB_ID(0x0582, 0x000c), 2, "%s MIDI" }, | |
1da177e4 | 986 | /* Edirol UM-880 */ |
27d10f56 | 987 | { USB_ID(0x0582, 0x0014), 8, "%s Control" }, |
1da177e4 | 988 | /* Edirol SD-90 */ |
27d10f56 CL |
989 | { USB_ID(0x0582, 0x0016), 0, "%s Part A" }, |
990 | { USB_ID(0x0582, 0x0016), 1, "%s Part B" }, | |
991 | { USB_ID(0x0582, 0x0016), 2, "%s MIDI 1" }, | |
992 | { USB_ID(0x0582, 0x0016), 3, "%s MIDI 2" }, | |
1da177e4 | 993 | /* Edirol UM-550 */ |
27d10f56 | 994 | { USB_ID(0x0582, 0x0023), 5, "%s Control" }, |
1da177e4 | 995 | /* Edirol SD-20 */ |
27d10f56 CL |
996 | { USB_ID(0x0582, 0x0027), 0, "%s Part A" }, |
997 | { USB_ID(0x0582, 0x0027), 1, "%s Part B" }, | |
998 | { USB_ID(0x0582, 0x0027), 2, "%s MIDI" }, | |
1da177e4 | 999 | /* Edirol SD-80 */ |
27d10f56 CL |
1000 | { USB_ID(0x0582, 0x0029), 0, "%s Part A" }, |
1001 | { USB_ID(0x0582, 0x0029), 1, "%s Part B" }, | |
1002 | { USB_ID(0x0582, 0x0029), 2, "%s MIDI 1" }, | |
1003 | { USB_ID(0x0582, 0x0029), 3, "%s MIDI 2" }, | |
1da177e4 | 1004 | /* Edirol UA-700 */ |
27d10f56 CL |
1005 | { USB_ID(0x0582, 0x002b), 0, "%s MIDI" }, |
1006 | { USB_ID(0x0582, 0x002b), 1, "%s Control" }, | |
1da177e4 | 1007 | /* Roland VariOS */ |
27d10f56 CL |
1008 | { USB_ID(0x0582, 0x002f), 0, "%s MIDI" }, |
1009 | { USB_ID(0x0582, 0x002f), 1, "%s External MIDI" }, | |
1010 | { USB_ID(0x0582, 0x002f), 2, "%s Sync" }, | |
1da177e4 | 1011 | /* Edirol PCR */ |
27d10f56 CL |
1012 | { USB_ID(0x0582, 0x0033), 0, "%s MIDI" }, |
1013 | { USB_ID(0x0582, 0x0033), 1, "%s 1" }, | |
1014 | { USB_ID(0x0582, 0x0033), 2, "%s 2" }, | |
1da177e4 | 1015 | /* BOSS GS-10 */ |
27d10f56 CL |
1016 | { USB_ID(0x0582, 0x003b), 0, "%s MIDI" }, |
1017 | { USB_ID(0x0582, 0x003b), 1, "%s Control" }, | |
1da177e4 | 1018 | /* Edirol UA-1000 */ |
27d10f56 CL |
1019 | { USB_ID(0x0582, 0x0044), 0, "%s MIDI" }, |
1020 | { USB_ID(0x0582, 0x0044), 1, "%s Control" }, | |
1da177e4 | 1021 | /* Edirol UR-80 */ |
27d10f56 CL |
1022 | { USB_ID(0x0582, 0x0048), 0, "%s MIDI" }, |
1023 | { USB_ID(0x0582, 0x0048), 1, "%s 1" }, | |
1024 | { USB_ID(0x0582, 0x0048), 2, "%s 2" }, | |
1da177e4 | 1025 | /* Edirol PCR-A */ |
27d10f56 CL |
1026 | { USB_ID(0x0582, 0x004d), 0, "%s MIDI" }, |
1027 | { USB_ID(0x0582, 0x004d), 1, "%s 1" }, | |
1028 | { USB_ID(0x0582, 0x004d), 2, "%s 2" }, | |
1da177e4 | 1029 | /* M-Audio MidiSport 8x8 */ |
27d10f56 CL |
1030 | { USB_ID(0x0763, 0x1031), 8, "%s Control" }, |
1031 | { USB_ID(0x0763, 0x1033), 8, "%s Control" }, | |
1da177e4 | 1032 | /* MOTU Fastlane */ |
27d10f56 CL |
1033 | { USB_ID(0x07fd, 0x0001), 0, "%s MIDI A" }, |
1034 | { USB_ID(0x07fd, 0x0001), 1, "%s MIDI B" }, | |
1da177e4 | 1035 | /* Emagic Unitor8/AMT8/MT4 */ |
27d10f56 CL |
1036 | { USB_ID(0x086a, 0x0001), 8, "%s Broadcast" }, |
1037 | { USB_ID(0x086a, 0x0002), 8, "%s Broadcast" }, | |
1038 | { USB_ID(0x086a, 0x0003), 4, "%s Broadcast" }, | |
1da177e4 LT |
1039 | }; |
1040 | ||
1041 | static void snd_usbmidi_init_substream(snd_usb_midi_t* umidi, | |
1042 | int stream, int number, | |
1043 | snd_rawmidi_substream_t** rsubstream) | |
1044 | { | |
1045 | int i; | |
1da177e4 LT |
1046 | const char *name_format; |
1047 | ||
1048 | snd_rawmidi_substream_t* substream = snd_usbmidi_find_substream(umidi, stream, number); | |
1049 | if (!substream) { | |
1050 | snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number); | |
1051 | return; | |
1052 | } | |
1053 | ||
1054 | /* TODO: read port name from jack descriptor */ | |
1055 | name_format = "%s MIDI %d"; | |
1da177e4 | 1056 | for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_names); ++i) { |
27d10f56 | 1057 | if (snd_usbmidi_port_names[i].id == umidi->chip->usb_id && |
1da177e4 LT |
1058 | snd_usbmidi_port_names[i].port == number) { |
1059 | name_format = snd_usbmidi_port_names[i].name_format; | |
1060 | break; | |
1061 | } | |
1062 | } | |
1063 | snprintf(substream->name, sizeof(substream->name), | |
1064 | name_format, umidi->chip->card->shortname, number + 1); | |
1065 | ||
1066 | *rsubstream = substream; | |
1067 | } | |
1068 | ||
1069 | /* | |
1070 | * Creates the endpoints and their ports. | |
1071 | */ | |
1072 | static int snd_usbmidi_create_endpoints(snd_usb_midi_t* umidi, | |
1073 | snd_usb_midi_endpoint_info_t* endpoints) | |
1074 | { | |
1075 | int i, j, err; | |
1076 | int out_ports = 0, in_ports = 0; | |
1077 | ||
1078 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1079 | if (endpoints[i].out_cables) { | |
1080 | err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i], | |
1081 | &umidi->endpoints[i]); | |
1082 | if (err < 0) | |
1083 | return err; | |
1084 | } | |
1085 | if (endpoints[i].in_cables) { | |
1086 | err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i], | |
1087 | &umidi->endpoints[i]); | |
1088 | if (err < 0) | |
1089 | return err; | |
1090 | } | |
1091 | ||
1092 | for (j = 0; j < 0x10; ++j) { | |
1093 | if (endpoints[i].out_cables & (1 << j)) { | |
1094 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports, | |
1095 | &umidi->endpoints[i].out->ports[j].substream); | |
1096 | ++out_ports; | |
1097 | } | |
1098 | if (endpoints[i].in_cables & (1 << j)) { | |
1099 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports, | |
1100 | &umidi->endpoints[i].in->ports[j].substream); | |
1101 | ++in_ports; | |
1102 | } | |
1103 | } | |
1104 | } | |
1105 | snd_printdd(KERN_INFO "created %d output and %d input ports\n", | |
1106 | out_ports, in_ports); | |
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * Returns MIDIStreaming device capabilities. | |
1112 | */ | |
1113 | static int snd_usbmidi_get_ms_info(snd_usb_midi_t* umidi, | |
1114 | snd_usb_midi_endpoint_info_t* endpoints) | |
1115 | { | |
1116 | struct usb_interface* intf; | |
1117 | struct usb_host_interface *hostif; | |
1118 | struct usb_interface_descriptor* intfd; | |
1119 | struct usb_ms_header_descriptor* ms_header; | |
1120 | struct usb_host_endpoint *hostep; | |
1121 | struct usb_endpoint_descriptor* ep; | |
1122 | struct usb_ms_endpoint_descriptor* ms_ep; | |
1123 | int i, epidx; | |
1124 | ||
1125 | intf = umidi->iface; | |
1126 | if (!intf) | |
1127 | return -ENXIO; | |
1128 | hostif = &intf->altsetting[0]; | |
1129 | intfd = get_iface_desc(hostif); | |
1130 | ms_header = (struct usb_ms_header_descriptor*)hostif->extra; | |
1131 | if (hostif->extralen >= 7 && | |
1132 | ms_header->bLength >= 7 && | |
1133 | ms_header->bDescriptorType == USB_DT_CS_INTERFACE && | |
1134 | ms_header->bDescriptorSubtype == HEADER) | |
1135 | snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n", | |
1136 | ms_header->bcdMSC[1], ms_header->bcdMSC[0]); | |
1137 | else | |
1138 | snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n"); | |
1139 | ||
1140 | epidx = 0; | |
1141 | for (i = 0; i < intfd->bNumEndpoints; ++i) { | |
1142 | hostep = &hostif->endpoint[i]; | |
1143 | ep = get_ep_desc(hostep); | |
1144 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK && | |
1145 | (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1146 | continue; | |
1147 | ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra; | |
1148 | if (hostep->extralen < 4 || | |
1149 | ms_ep->bLength < 4 || | |
1150 | ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT || | |
1151 | ms_ep->bDescriptorSubtype != MS_GENERAL) | |
1152 | continue; | |
1153 | if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
1154 | if (endpoints[epidx].out_ep) { | |
1155 | if (++epidx >= MIDI_MAX_ENDPOINTS) { | |
1156 | snd_printk(KERN_WARNING "too many endpoints\n"); | |
1157 | break; | |
1158 | } | |
1159 | } | |
1160 | endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1161 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1162 | endpoints[epidx].out_interval = ep->bInterval; | |
1163 | endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; | |
1164 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", | |
1165 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); | |
1166 | } else { | |
1167 | if (endpoints[epidx].in_ep) { | |
1168 | if (++epidx >= MIDI_MAX_ENDPOINTS) { | |
1169 | snd_printk(KERN_WARNING "too many endpoints\n"); | |
1170 | break; | |
1171 | } | |
1172 | } | |
1173 | endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1174 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1175 | endpoints[epidx].in_interval = ep->bInterval; | |
1176 | endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; | |
1177 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", | |
1178 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); | |
1179 | } | |
1180 | } | |
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * On Roland devices, use the second alternate setting to be able to use | |
1186 | * the interrupt input endpoint. | |
1187 | */ | |
1188 | static void snd_usbmidi_switch_roland_altsetting(snd_usb_midi_t* umidi) | |
1189 | { | |
1190 | struct usb_interface* intf; | |
1191 | struct usb_host_interface *hostif; | |
1192 | struct usb_interface_descriptor* intfd; | |
1193 | ||
1194 | intf = umidi->iface; | |
1195 | if (!intf || intf->num_altsetting != 2) | |
1196 | return; | |
1197 | ||
1198 | hostif = &intf->altsetting[1]; | |
1199 | intfd = get_iface_desc(hostif); | |
1200 | if (intfd->bNumEndpoints != 2 || | |
1201 | (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK || | |
1202 | (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1203 | return; | |
1204 | ||
1205 | snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n", | |
1206 | intfd->bAlternateSetting); | |
1207 | usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber, | |
1208 | intfd->bAlternateSetting); | |
1209 | } | |
1210 | ||
1211 | /* | |
1212 | * Try to find any usable endpoints in the interface. | |
1213 | */ | |
1214 | static int snd_usbmidi_detect_endpoints(snd_usb_midi_t* umidi, | |
1215 | snd_usb_midi_endpoint_info_t* endpoint, | |
1216 | int max_endpoints) | |
1217 | { | |
1218 | struct usb_interface* intf; | |
1219 | struct usb_host_interface *hostif; | |
1220 | struct usb_interface_descriptor* intfd; | |
1221 | struct usb_endpoint_descriptor* epd; | |
1222 | int i, out_eps = 0, in_eps = 0; | |
1223 | ||
27d10f56 | 1224 | if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582) |
1da177e4 LT |
1225 | snd_usbmidi_switch_roland_altsetting(umidi); |
1226 | ||
c1ab5d59 CL |
1227 | if (endpoint[0].out_ep || endpoint[0].in_ep) |
1228 | return 0; | |
1229 | ||
1da177e4 LT |
1230 | intf = umidi->iface; |
1231 | if (!intf || intf->num_altsetting < 1) | |
1232 | return -ENOENT; | |
1233 | hostif = intf->cur_altsetting; | |
1234 | intfd = get_iface_desc(hostif); | |
1235 | ||
1236 | for (i = 0; i < intfd->bNumEndpoints; ++i) { | |
1237 | epd = get_endpoint(hostif, i); | |
1238 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK && | |
1239 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1240 | continue; | |
1241 | if (out_eps < max_endpoints && | |
1242 | (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
1243 | endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1244 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1245 | endpoint[out_eps].out_interval = epd->bInterval; | |
1246 | ++out_eps; | |
1247 | } | |
1248 | if (in_eps < max_endpoints && | |
1249 | (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) { | |
1250 | endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1251 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1252 | endpoint[in_eps].in_interval = epd->bInterval; | |
1253 | ++in_eps; | |
1254 | } | |
1255 | } | |
1256 | return (out_eps || in_eps) ? 0 : -ENOENT; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * Detects the endpoints for one-port-per-endpoint protocols. | |
1261 | */ | |
1262 | static int snd_usbmidi_detect_per_port_endpoints(snd_usb_midi_t* umidi, | |
1263 | snd_usb_midi_endpoint_info_t* endpoints) | |
1264 | { | |
1265 | int err, i; | |
1266 | ||
1267 | err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS); | |
1268 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1269 | if (endpoints[i].out_ep) | |
1270 | endpoints[i].out_cables = 0x0001; | |
1271 | if (endpoints[i].in_ep) | |
1272 | endpoints[i].in_cables = 0x0001; | |
1273 | } | |
1274 | return err; | |
1275 | } | |
1276 | ||
1277 | /* | |
1278 | * Detects the endpoints and ports of Yamaha devices. | |
1279 | */ | |
1280 | static int snd_usbmidi_detect_yamaha(snd_usb_midi_t* umidi, | |
1281 | snd_usb_midi_endpoint_info_t* endpoint) | |
1282 | { | |
1283 | struct usb_interface* intf; | |
1284 | struct usb_host_interface *hostif; | |
1285 | struct usb_interface_descriptor* intfd; | |
1286 | uint8_t* cs_desc; | |
1287 | ||
1288 | intf = umidi->iface; | |
1289 | if (!intf) | |
1290 | return -ENOENT; | |
1291 | hostif = intf->altsetting; | |
1292 | intfd = get_iface_desc(hostif); | |
1293 | if (intfd->bNumEndpoints < 1) | |
1294 | return -ENOENT; | |
1295 | ||
1296 | /* | |
1297 | * For each port there is one MIDI_IN/OUT_JACK descriptor, not | |
1298 | * necessarily with any useful contents. So simply count 'em. | |
1299 | */ | |
1300 | for (cs_desc = hostif->extra; | |
1301 | cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2; | |
1302 | cs_desc += cs_desc[0]) { | |
1303 | if (cs_desc[1] == CS_AUDIO_INTERFACE) { | |
1304 | if (cs_desc[2] == MIDI_IN_JACK) | |
1305 | endpoint->in_cables = (endpoint->in_cables << 1) | 1; | |
1306 | else if (cs_desc[2] == MIDI_OUT_JACK) | |
1307 | endpoint->out_cables = (endpoint->out_cables << 1) | 1; | |
1308 | } | |
1309 | } | |
1310 | if (!endpoint->in_cables && !endpoint->out_cables) | |
1311 | return -ENOENT; | |
1312 | ||
1313 | return snd_usbmidi_detect_endpoints(umidi, endpoint, 1); | |
1314 | } | |
1315 | ||
1316 | /* | |
1317 | * Creates the endpoints and their ports for Midiman devices. | |
1318 | */ | |
1319 | static int snd_usbmidi_create_endpoints_midiman(snd_usb_midi_t* umidi, | |
1320 | snd_usb_midi_endpoint_info_t* endpoint) | |
1321 | { | |
1322 | snd_usb_midi_endpoint_info_t ep_info; | |
1323 | struct usb_interface* intf; | |
1324 | struct usb_host_interface *hostif; | |
1325 | struct usb_interface_descriptor* intfd; | |
1326 | struct usb_endpoint_descriptor* epd; | |
1327 | int cable, err; | |
1328 | ||
1329 | intf = umidi->iface; | |
1330 | if (!intf) | |
1331 | return -ENOENT; | |
1332 | hostif = intf->altsetting; | |
1333 | intfd = get_iface_desc(hostif); | |
1334 | /* | |
1335 | * The various MidiSport devices have more or less random endpoint | |
1336 | * numbers, so we have to identify the endpoints by their index in | |
1337 | * the descriptor array, like the driver for that other OS does. | |
1338 | * | |
1339 | * There is one interrupt input endpoint for all input ports, one | |
1340 | * bulk output endpoint for even-numbered ports, and one for odd- | |
1341 | * numbered ports. Both bulk output endpoints have corresponding | |
1342 | * input bulk endpoints (at indices 1 and 3) which aren't used. | |
1343 | */ | |
1344 | if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) { | |
1345 | snd_printdd(KERN_ERR "not enough endpoints\n"); | |
1346 | return -ENOENT; | |
1347 | } | |
1348 | ||
1349 | epd = get_endpoint(hostif, 0); | |
1350 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN || | |
1351 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) { | |
1352 | snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n"); | |
1353 | return -ENXIO; | |
1354 | } | |
1355 | epd = get_endpoint(hostif, 2); | |
1356 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT || | |
1357 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) { | |
1358 | snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n"); | |
1359 | return -ENXIO; | |
1360 | } | |
1361 | if (endpoint->out_cables > 0x0001) { | |
1362 | epd = get_endpoint(hostif, 4); | |
1363 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT || | |
1364 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) { | |
1365 | snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n"); | |
1366 | return -ENXIO; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1371 | ep_info.out_cables = endpoint->out_cables & 0x5555; | |
1372 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); | |
1373 | if (err < 0) | |
1374 | return err; | |
1375 | ||
1376 | ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1377 | ep_info.in_interval = get_endpoint(hostif, 0)->bInterval; | |
1378 | ep_info.in_cables = endpoint->in_cables; | |
1379 | err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); | |
1380 | if (err < 0) | |
1381 | return err; | |
1382 | ||
1383 | if (endpoint->out_cables > 0x0001) { | |
1384 | ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1385 | ep_info.out_cables = endpoint->out_cables & 0xaaaa; | |
1386 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]); | |
1387 | if (err < 0) | |
1388 | return err; | |
1389 | } | |
1390 | ||
1391 | for (cable = 0; cable < 0x10; ++cable) { | |
1392 | if (endpoint->out_cables & (1 << cable)) | |
1393 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable, | |
1394 | &umidi->endpoints[cable & 1].out->ports[cable].substream); | |
1395 | if (endpoint->in_cables & (1 << cable)) | |
1396 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable, | |
1397 | &umidi->endpoints[0].in->ports[cable].substream); | |
1398 | } | |
1399 | return 0; | |
1400 | } | |
1401 | ||
1402 | static int snd_usbmidi_create_rawmidi(snd_usb_midi_t* umidi, | |
1403 | int out_ports, int in_ports) | |
1404 | { | |
1405 | snd_rawmidi_t* rmidi; | |
1406 | int err; | |
1407 | ||
1408 | err = snd_rawmidi_new(umidi->chip->card, "USB MIDI", | |
1409 | umidi->chip->next_midi_device++, | |
1410 | out_ports, in_ports, &rmidi); | |
1411 | if (err < 0) | |
1412 | return err; | |
1413 | strcpy(rmidi->name, umidi->chip->card->shortname); | |
1414 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | | |
1415 | SNDRV_RAWMIDI_INFO_INPUT | | |
1416 | SNDRV_RAWMIDI_INFO_DUPLEX; | |
1417 | rmidi->private_data = umidi; | |
1418 | rmidi->private_free = snd_usbmidi_rawmidi_free; | |
1419 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops); | |
1420 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops); | |
1421 | ||
1422 | umidi->rmidi = rmidi; | |
1423 | return 0; | |
1424 | } | |
1425 | ||
1426 | /* | |
1427 | * Temporarily stop input. | |
1428 | */ | |
1429 | void snd_usbmidi_input_stop(struct list_head* p) | |
1430 | { | |
1431 | snd_usb_midi_t* umidi; | |
1432 | int i; | |
1433 | ||
1434 | umidi = list_entry(p, snd_usb_midi_t, list); | |
1435 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1436 | snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i]; | |
1437 | if (ep->in) | |
1438 | usb_kill_urb(ep->in->urb); | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | static void snd_usbmidi_input_start_ep(snd_usb_midi_in_endpoint_t* ep) | |
1443 | { | |
1444 | if (ep) { | |
1445 | struct urb* urb = ep->urb; | |
1446 | urb->dev = ep->umidi->chip->dev; | |
1447 | snd_usbmidi_submit_urb(urb, GFP_KERNEL); | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Resume input after a call to snd_usbmidi_input_stop(). | |
1453 | */ | |
1454 | void snd_usbmidi_input_start(struct list_head* p) | |
1455 | { | |
1456 | snd_usb_midi_t* umidi; | |
1457 | int i; | |
1458 | ||
1459 | umidi = list_entry(p, snd_usb_midi_t, list); | |
1460 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
1461 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); | |
1462 | } | |
1463 | ||
1464 | /* | |
1465 | * Creates and registers everything needed for a MIDI streaming interface. | |
1466 | */ | |
1467 | int snd_usb_create_midi_interface(snd_usb_audio_t* chip, | |
1468 | struct usb_interface* iface, | |
1469 | const snd_usb_audio_quirk_t* quirk) | |
1470 | { | |
1471 | snd_usb_midi_t* umidi; | |
1472 | snd_usb_midi_endpoint_info_t endpoints[MIDI_MAX_ENDPOINTS]; | |
1473 | int out_ports, in_ports; | |
1474 | int i, err; | |
1475 | ||
1476 | umidi = kcalloc(1, sizeof(*umidi), GFP_KERNEL); | |
1477 | if (!umidi) | |
1478 | return -ENOMEM; | |
1479 | umidi->chip = chip; | |
1480 | umidi->iface = iface; | |
1481 | umidi->quirk = quirk; | |
1482 | umidi->usb_protocol_ops = &snd_usbmidi_standard_ops; | |
1483 | ||
1484 | /* detect the endpoint(s) to use */ | |
1485 | memset(endpoints, 0, sizeof(endpoints)); | |
1486 | if (!quirk) { | |
1487 | err = snd_usbmidi_get_ms_info(umidi, endpoints); | |
1488 | } else { | |
1489 | switch (quirk->type) { | |
1490 | case QUIRK_MIDI_FIXED_ENDPOINT: | |
1491 | memcpy(&endpoints[0], quirk->data, | |
1492 | sizeof(snd_usb_midi_endpoint_info_t)); | |
1493 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); | |
1494 | break; | |
1495 | case QUIRK_MIDI_YAMAHA: | |
1496 | err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]); | |
1497 | break; | |
1498 | case QUIRK_MIDI_MIDIMAN: | |
1499 | umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops; | |
1500 | memcpy(&endpoints[0], quirk->data, | |
1501 | sizeof(snd_usb_midi_endpoint_info_t)); | |
1502 | err = 0; | |
1503 | break; | |
1504 | case QUIRK_MIDI_NOVATION: | |
1505 | umidi->usb_protocol_ops = &snd_usbmidi_novation_ops; | |
1506 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); | |
1507 | break; | |
1508 | case QUIRK_MIDI_MOTU: | |
1509 | umidi->usb_protocol_ops = &snd_usbmidi_motu_ops; | |
1510 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); | |
1511 | break; | |
1512 | case QUIRK_MIDI_EMAGIC: | |
1513 | umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops; | |
1514 | memcpy(&endpoints[0], quirk->data, | |
1515 | sizeof(snd_usb_midi_endpoint_info_t)); | |
1516 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); | |
1517 | break; | |
1518 | default: | |
1519 | snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); | |
1520 | err = -ENXIO; | |
1521 | break; | |
1522 | } | |
1523 | } | |
1524 | if (err < 0) { | |
1525 | kfree(umidi); | |
1526 | return err; | |
1527 | } | |
1528 | ||
1529 | /* create rawmidi device */ | |
1530 | out_ports = 0; | |
1531 | in_ports = 0; | |
1532 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1533 | out_ports += snd_usbmidi_count_bits(endpoints[i].out_cables); | |
1534 | in_ports += snd_usbmidi_count_bits(endpoints[i].in_cables); | |
1535 | } | |
1536 | err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports); | |
1537 | if (err < 0) { | |
1538 | kfree(umidi); | |
1539 | return err; | |
1540 | } | |
1541 | ||
1542 | /* create endpoint/port structures */ | |
1543 | if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN) | |
1544 | err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]); | |
1545 | else | |
1546 | err = snd_usbmidi_create_endpoints(umidi, endpoints); | |
1547 | if (err < 0) { | |
1548 | snd_usbmidi_free(umidi); | |
1549 | return err; | |
1550 | } | |
1551 | ||
1552 | list_add(&umidi->list, &umidi->chip->midi_list); | |
1553 | ||
1554 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
1555 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); | |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | EXPORT_SYMBOL(snd_usb_create_midi_interface); | |
1560 | EXPORT_SYMBOL(snd_usbmidi_input_stop); | |
1561 | EXPORT_SYMBOL(snd_usbmidi_input_start); | |
1562 | EXPORT_SYMBOL(snd_usbmidi_disconnect); |