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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> | |
c8846970 | 47 | #include <linux/timer.h> |
1da177e4 LT |
48 | #include <linux/usb.h> |
49 | #include <sound/core.h> | |
50 | #include <sound/minors.h> | |
51 | #include <sound/rawmidi.h> | |
52 | #include "usbaudio.h" | |
53 | ||
54 | ||
55 | /* | |
56 | * define this to log all USB packets | |
57 | */ | |
58 | /* #define DUMP_PACKETS */ | |
59 | ||
c8846970 CL |
60 | /* |
61 | * how long to wait after some USB errors, so that khubd can disconnect() us | |
62 | * without too many spurious errors | |
63 | */ | |
64 | #define ERROR_DELAY_JIFFIES (HZ / 10) | |
65 | ||
1da177e4 LT |
66 | |
67 | MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); | |
68 | MODULE_DESCRIPTION("USB Audio/MIDI helper module"); | |
69 | MODULE_LICENSE("Dual BSD/GPL"); | |
70 | ||
71 | ||
72 | struct usb_ms_header_descriptor { | |
73 | __u8 bLength; | |
74 | __u8 bDescriptorType; | |
75 | __u8 bDescriptorSubtype; | |
76 | __u8 bcdMSC[2]; | |
77 | __le16 wTotalLength; | |
78 | } __attribute__ ((packed)); | |
79 | ||
80 | struct usb_ms_endpoint_descriptor { | |
81 | __u8 bLength; | |
82 | __u8 bDescriptorType; | |
83 | __u8 bDescriptorSubtype; | |
84 | __u8 bNumEmbMIDIJack; | |
85 | __u8 baAssocJackID[0]; | |
86 | } __attribute__ ((packed)); | |
87 | ||
88 | typedef struct snd_usb_midi snd_usb_midi_t; | |
89 | typedef struct snd_usb_midi_endpoint snd_usb_midi_endpoint_t; | |
90 | typedef struct snd_usb_midi_out_endpoint snd_usb_midi_out_endpoint_t; | |
91 | typedef struct snd_usb_midi_in_endpoint snd_usb_midi_in_endpoint_t; | |
92 | typedef struct usbmidi_out_port usbmidi_out_port_t; | |
93 | typedef struct usbmidi_in_port usbmidi_in_port_t; | |
94 | ||
95 | struct usb_protocol_ops { | |
96 | void (*input)(snd_usb_midi_in_endpoint_t*, uint8_t*, int); | |
97 | void (*output)(snd_usb_midi_out_endpoint_t*); | |
98 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); | |
99 | void (*init_out_endpoint)(snd_usb_midi_out_endpoint_t*); | |
100 | void (*finish_out_endpoint)(snd_usb_midi_out_endpoint_t*); | |
101 | }; | |
102 | ||
103 | struct snd_usb_midi { | |
104 | snd_usb_audio_t *chip; | |
105 | struct usb_interface *iface; | |
106 | const snd_usb_audio_quirk_t *quirk; | |
107 | snd_rawmidi_t* rmidi; | |
108 | struct usb_protocol_ops* usb_protocol_ops; | |
109 | struct list_head list; | |
c8846970 | 110 | struct timer_list error_timer; |
1da177e4 LT |
111 | |
112 | struct snd_usb_midi_endpoint { | |
113 | snd_usb_midi_out_endpoint_t *out; | |
114 | snd_usb_midi_in_endpoint_t *in; | |
115 | } endpoints[MIDI_MAX_ENDPOINTS]; | |
116 | unsigned long input_triggered; | |
117 | }; | |
118 | ||
119 | struct snd_usb_midi_out_endpoint { | |
120 | snd_usb_midi_t* umidi; | |
121 | struct urb* urb; | |
122 | int urb_active; | |
123 | int max_transfer; /* size of urb buffer */ | |
124 | struct tasklet_struct tasklet; | |
125 | ||
126 | spinlock_t buffer_lock; | |
127 | ||
128 | struct usbmidi_out_port { | |
129 | snd_usb_midi_out_endpoint_t* ep; | |
130 | snd_rawmidi_substream_t* substream; | |
131 | int active; | |
132 | uint8_t cable; /* cable number << 4 */ | |
133 | uint8_t state; | |
134 | #define STATE_UNKNOWN 0 | |
135 | #define STATE_1PARAM 1 | |
136 | #define STATE_2PARAM_1 2 | |
137 | #define STATE_2PARAM_2 3 | |
138 | #define STATE_SYSEX_0 4 | |
139 | #define STATE_SYSEX_1 5 | |
140 | #define STATE_SYSEX_2 6 | |
141 | uint8_t data[2]; | |
142 | } ports[0x10]; | |
143 | int current_port; | |
144 | }; | |
145 | ||
146 | struct snd_usb_midi_in_endpoint { | |
147 | snd_usb_midi_t* umidi; | |
148 | struct urb* urb; | |
149 | struct usbmidi_in_port { | |
150 | snd_rawmidi_substream_t* substream; | |
151 | } ports[0x10]; | |
c8846970 CL |
152 | u8 seen_f5; |
153 | u8 error_resubmit; | |
1da177e4 LT |
154 | int current_port; |
155 | }; | |
156 | ||
157 | static void snd_usbmidi_do_output(snd_usb_midi_out_endpoint_t* ep); | |
158 | ||
159 | static const uint8_t snd_usbmidi_cin_length[] = { | |
160 | 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 | |
161 | }; | |
162 | ||
163 | /* | |
164 | * Submits the URB, with error handling. | |
165 | */ | |
166 | static int snd_usbmidi_submit_urb(struct urb* urb, int flags) | |
167 | { | |
168 | int err = usb_submit_urb(urb, flags); | |
169 | if (err < 0 && err != -ENODEV) | |
170 | snd_printk(KERN_ERR "usb_submit_urb: %d\n", err); | |
171 | return err; | |
172 | } | |
173 | ||
174 | /* | |
175 | * Error handling for URB completion functions. | |
176 | */ | |
177 | static int snd_usbmidi_urb_error(int status) | |
178 | { | |
c8846970 CL |
179 | switch (status) { |
180 | /* manually unlinked, or device gone */ | |
181 | case -ENOENT: | |
182 | case -ECONNRESET: | |
183 | case -ESHUTDOWN: | |
184 | case -ENODEV: | |
185 | return -ENODEV; | |
186 | /* errors that might occur during unplugging */ | |
187 | case -EPROTO: /* EHCI */ | |
188 | case -ETIMEDOUT: /* OHCI */ | |
189 | case -EILSEQ: /* UHCI */ | |
190 | return -EIO; | |
191 | default: | |
192 | snd_printk(KERN_ERR "urb status %d\n", status); | |
193 | return 0; /* continue */ | |
194 | } | |
1da177e4 LT |
195 | } |
196 | ||
197 | /* | |
198 | * Receives a chunk of MIDI data. | |
199 | */ | |
200 | static void snd_usbmidi_input_data(snd_usb_midi_in_endpoint_t* ep, int portidx, | |
201 | uint8_t* data, int length) | |
202 | { | |
203 | usbmidi_in_port_t* port = &ep->ports[portidx]; | |
204 | ||
205 | if (!port->substream) { | |
206 | snd_printd("unexpected port %d!\n", portidx); | |
207 | return; | |
208 | } | |
209 | if (!test_bit(port->substream->number, &ep->umidi->input_triggered)) | |
210 | return; | |
211 | snd_rawmidi_receive(port->substream, data, length); | |
212 | } | |
213 | ||
214 | #ifdef DUMP_PACKETS | |
215 | static void dump_urb(const char *type, const u8 *data, int length) | |
216 | { | |
217 | snd_printk(KERN_DEBUG "%s packet: [", type); | |
218 | for (; length > 0; ++data, --length) | |
219 | printk(" %02x", *data); | |
220 | printk(" ]\n"); | |
221 | } | |
222 | #else | |
223 | #define dump_urb(type, data, length) /* nothing */ | |
224 | #endif | |
225 | ||
226 | /* | |
227 | * Processes the data read from the device. | |
228 | */ | |
229 | static void snd_usbmidi_in_urb_complete(struct urb* urb, struct pt_regs *regs) | |
230 | { | |
231 | snd_usb_midi_in_endpoint_t* ep = urb->context; | |
232 | ||
233 | if (urb->status == 0) { | |
234 | dump_urb("received", urb->transfer_buffer, urb->actual_length); | |
235 | ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, | |
236 | urb->actual_length); | |
237 | } else { | |
c8846970 CL |
238 | int err = snd_usbmidi_urb_error(urb->status); |
239 | if (err < 0) { | |
240 | if (err != -ENODEV) { | |
241 | ep->error_resubmit = 1; | |
242 | mod_timer(&ep->umidi->error_timer, | |
243 | jiffies + ERROR_DELAY_JIFFIES); | |
244 | } | |
1da177e4 | 245 | return; |
c8846970 | 246 | } |
1da177e4 LT |
247 | } |
248 | ||
249 | if (usb_pipe_needs_resubmit(urb->pipe)) { | |
250 | urb->dev = ep->umidi->chip->dev; | |
251 | snd_usbmidi_submit_urb(urb, GFP_ATOMIC); | |
252 | } | |
253 | } | |
254 | ||
255 | static void snd_usbmidi_out_urb_complete(struct urb* urb, struct pt_regs *regs) | |
256 | { | |
257 | snd_usb_midi_out_endpoint_t* ep = urb->context; | |
258 | ||
259 | spin_lock(&ep->buffer_lock); | |
260 | ep->urb_active = 0; | |
261 | spin_unlock(&ep->buffer_lock); | |
262 | if (urb->status < 0) { | |
c8846970 CL |
263 | int err = snd_usbmidi_urb_error(urb->status); |
264 | if (err < 0) { | |
265 | if (err != -ENODEV) | |
266 | mod_timer(&ep->umidi->error_timer, | |
267 | jiffies + ERROR_DELAY_JIFFIES); | |
1da177e4 | 268 | return; |
c8846970 | 269 | } |
1da177e4 LT |
270 | } |
271 | snd_usbmidi_do_output(ep); | |
272 | } | |
273 | ||
274 | /* | |
275 | * This is called when some data should be transferred to the device | |
276 | * (from one or more substreams). | |
277 | */ | |
278 | static void snd_usbmidi_do_output(snd_usb_midi_out_endpoint_t* ep) | |
279 | { | |
280 | struct urb* urb = ep->urb; | |
281 | unsigned long flags; | |
282 | ||
283 | spin_lock_irqsave(&ep->buffer_lock, flags); | |
284 | if (ep->urb_active || ep->umidi->chip->shutdown) { | |
285 | spin_unlock_irqrestore(&ep->buffer_lock, flags); | |
286 | return; | |
287 | } | |
288 | ||
289 | urb->transfer_buffer_length = 0; | |
290 | ep->umidi->usb_protocol_ops->output(ep); | |
291 | ||
292 | if (urb->transfer_buffer_length > 0) { | |
293 | dump_urb("sending", urb->transfer_buffer, | |
294 | urb->transfer_buffer_length); | |
295 | urb->dev = ep->umidi->chip->dev; | |
296 | ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0; | |
297 | } | |
298 | spin_unlock_irqrestore(&ep->buffer_lock, flags); | |
299 | } | |
300 | ||
301 | static void snd_usbmidi_out_tasklet(unsigned long data) | |
302 | { | |
303 | snd_usb_midi_out_endpoint_t* ep = (snd_usb_midi_out_endpoint_t *) data; | |
304 | ||
305 | snd_usbmidi_do_output(ep); | |
306 | } | |
307 | ||
c8846970 CL |
308 | /* called after transfers had been interrupted due to some USB error */ |
309 | static void snd_usbmidi_error_timer(unsigned long data) | |
310 | { | |
311 | snd_usb_midi_t *umidi = (snd_usb_midi_t *)data; | |
312 | int i; | |
313 | ||
314 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
315 | snd_usb_midi_in_endpoint_t *in = umidi->endpoints[i].in; | |
316 | if (in && in->error_resubmit) { | |
317 | in->error_resubmit = 0; | |
318 | in->urb->dev = umidi->chip->dev; | |
319 | snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC); | |
320 | } | |
321 | if (umidi->endpoints[i].out) | |
322 | snd_usbmidi_do_output(umidi->endpoints[i].out); | |
323 | } | |
324 | } | |
325 | ||
1da177e4 LT |
326 | /* helper function to send static data that may not DMA-able */ |
327 | static int send_bulk_static_data(snd_usb_midi_out_endpoint_t* ep, | |
328 | const void *data, int len) | |
329 | { | |
330 | int err; | |
331 | void *buf = kmalloc(len, GFP_KERNEL); | |
332 | if (!buf) | |
333 | return -ENOMEM; | |
334 | memcpy(buf, data, len); | |
335 | dump_urb("sending", buf, len); | |
336 | err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len, | |
337 | NULL, 250); | |
338 | kfree(buf); | |
339 | return err; | |
340 | } | |
341 | ||
342 | /* | |
343 | * Standard USB MIDI protocol: see the spec. | |
344 | * Midiman protocol: like the standard protocol, but the control byte is the | |
345 | * fourth byte in each packet, and uses length instead of CIN. | |
346 | */ | |
347 | ||
348 | static void snd_usbmidi_standard_input(snd_usb_midi_in_endpoint_t* ep, | |
349 | uint8_t* buffer, int buffer_length) | |
350 | { | |
351 | int i; | |
352 | ||
353 | for (i = 0; i + 3 < buffer_length; i += 4) | |
354 | if (buffer[i] != 0) { | |
355 | int cable = buffer[i] >> 4; | |
356 | int length = snd_usbmidi_cin_length[buffer[i] & 0x0f]; | |
357 | snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); | |
358 | } | |
359 | } | |
360 | ||
361 | static void snd_usbmidi_midiman_input(snd_usb_midi_in_endpoint_t* ep, | |
362 | uint8_t* buffer, int buffer_length) | |
363 | { | |
364 | int i; | |
365 | ||
366 | for (i = 0; i + 3 < buffer_length; i += 4) | |
367 | if (buffer[i + 3] != 0) { | |
368 | int port = buffer[i + 3] >> 4; | |
369 | int length = buffer[i + 3] & 3; | |
370 | snd_usbmidi_input_data(ep, port, &buffer[i], length); | |
371 | } | |
372 | } | |
373 | ||
374 | /* | |
375 | * Adds one USB MIDI packet to the output buffer. | |
376 | */ | |
377 | static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0, | |
378 | uint8_t p1, uint8_t p2, uint8_t p3) | |
379 | { | |
380 | ||
381 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; | |
382 | buf[0] = p0; | |
383 | buf[1] = p1; | |
384 | buf[2] = p2; | |
385 | buf[3] = p3; | |
386 | urb->transfer_buffer_length += 4; | |
387 | } | |
388 | ||
389 | /* | |
390 | * Adds one Midiman packet to the output buffer. | |
391 | */ | |
392 | static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0, | |
393 | uint8_t p1, uint8_t p2, uint8_t p3) | |
394 | { | |
395 | ||
396 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; | |
397 | buf[0] = p1; | |
398 | buf[1] = p2; | |
399 | buf[2] = p3; | |
400 | buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f]; | |
401 | urb->transfer_buffer_length += 4; | |
402 | } | |
403 | ||
404 | /* | |
405 | * Converts MIDI commands to USB MIDI packets. | |
406 | */ | |
407 | static void snd_usbmidi_transmit_byte(usbmidi_out_port_t* port, | |
408 | uint8_t b, struct urb* urb) | |
409 | { | |
410 | uint8_t p0 = port->cable; | |
411 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) = | |
412 | port->ep->umidi->usb_protocol_ops->output_packet; | |
413 | ||
414 | if (b >= 0xf8) { | |
415 | output_packet(urb, p0 | 0x0f, b, 0, 0); | |
416 | } else if (b >= 0xf0) { | |
417 | switch (b) { | |
418 | case 0xf0: | |
419 | port->data[0] = b; | |
420 | port->state = STATE_SYSEX_1; | |
421 | break; | |
422 | case 0xf1: | |
423 | case 0xf3: | |
424 | port->data[0] = b; | |
425 | port->state = STATE_1PARAM; | |
426 | break; | |
427 | case 0xf2: | |
428 | port->data[0] = b; | |
429 | port->state = STATE_2PARAM_1; | |
430 | break; | |
431 | case 0xf4: | |
432 | case 0xf5: | |
433 | port->state = STATE_UNKNOWN; | |
434 | break; | |
435 | case 0xf6: | |
436 | output_packet(urb, p0 | 0x05, 0xf6, 0, 0); | |
437 | port->state = STATE_UNKNOWN; | |
438 | break; | |
439 | case 0xf7: | |
440 | switch (port->state) { | |
441 | case STATE_SYSEX_0: | |
442 | output_packet(urb, p0 | 0x05, 0xf7, 0, 0); | |
443 | break; | |
444 | case STATE_SYSEX_1: | |
445 | output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0); | |
446 | break; | |
447 | case STATE_SYSEX_2: | |
448 | output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7); | |
449 | break; | |
450 | } | |
451 | port->state = STATE_UNKNOWN; | |
452 | break; | |
453 | } | |
454 | } else if (b >= 0x80) { | |
455 | port->data[0] = b; | |
456 | if (b >= 0xc0 && b <= 0xdf) | |
457 | port->state = STATE_1PARAM; | |
458 | else | |
459 | port->state = STATE_2PARAM_1; | |
460 | } else { /* b < 0x80 */ | |
461 | switch (port->state) { | |
462 | case STATE_1PARAM: | |
463 | if (port->data[0] < 0xf0) { | |
464 | p0 |= port->data[0] >> 4; | |
465 | } else { | |
466 | p0 |= 0x02; | |
467 | port->state = STATE_UNKNOWN; | |
468 | } | |
469 | output_packet(urb, p0, port->data[0], b, 0); | |
470 | break; | |
471 | case STATE_2PARAM_1: | |
472 | port->data[1] = b; | |
473 | port->state = STATE_2PARAM_2; | |
474 | break; | |
475 | case STATE_2PARAM_2: | |
476 | if (port->data[0] < 0xf0) { | |
477 | p0 |= port->data[0] >> 4; | |
478 | port->state = STATE_2PARAM_1; | |
479 | } else { | |
480 | p0 |= 0x03; | |
481 | port->state = STATE_UNKNOWN; | |
482 | } | |
483 | output_packet(urb, p0, port->data[0], port->data[1], b); | |
484 | break; | |
485 | case STATE_SYSEX_0: | |
486 | port->data[0] = b; | |
487 | port->state = STATE_SYSEX_1; | |
488 | break; | |
489 | case STATE_SYSEX_1: | |
490 | port->data[1] = b; | |
491 | port->state = STATE_SYSEX_2; | |
492 | break; | |
493 | case STATE_SYSEX_2: | |
494 | output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b); | |
495 | port->state = STATE_SYSEX_0; | |
496 | break; | |
497 | } | |
498 | } | |
499 | } | |
500 | ||
501 | static void snd_usbmidi_standard_output(snd_usb_midi_out_endpoint_t* ep) | |
502 | { | |
503 | struct urb* urb = ep->urb; | |
504 | int p; | |
505 | ||
506 | /* FIXME: lower-numbered ports can starve higher-numbered ports */ | |
507 | for (p = 0; p < 0x10; ++p) { | |
508 | usbmidi_out_port_t* port = &ep->ports[p]; | |
509 | if (!port->active) | |
510 | continue; | |
511 | while (urb->transfer_buffer_length + 3 < ep->max_transfer) { | |
512 | uint8_t b; | |
513 | if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) { | |
514 | port->active = 0; | |
515 | break; | |
516 | } | |
517 | snd_usbmidi_transmit_byte(port, b, urb); | |
518 | } | |
519 | } | |
520 | } | |
521 | ||
522 | static struct usb_protocol_ops snd_usbmidi_standard_ops = { | |
523 | .input = snd_usbmidi_standard_input, | |
524 | .output = snd_usbmidi_standard_output, | |
525 | .output_packet = snd_usbmidi_output_standard_packet, | |
526 | }; | |
527 | ||
528 | static struct usb_protocol_ops snd_usbmidi_midiman_ops = { | |
529 | .input = snd_usbmidi_midiman_input, | |
530 | .output = snd_usbmidi_standard_output, | |
531 | .output_packet = snd_usbmidi_output_midiman_packet, | |
532 | }; | |
533 | ||
534 | /* | |
535 | * Novation USB MIDI protocol: number of data bytes is in the first byte | |
536 | * (when receiving) (+1!) or in the second byte (when sending); data begins | |
537 | * at the third byte. | |
538 | */ | |
539 | ||
540 | static void snd_usbmidi_novation_input(snd_usb_midi_in_endpoint_t* ep, | |
541 | uint8_t* buffer, int buffer_length) | |
542 | { | |
543 | if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1) | |
544 | return; | |
545 | snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1); | |
546 | } | |
547 | ||
548 | static void snd_usbmidi_novation_output(snd_usb_midi_out_endpoint_t* ep) | |
549 | { | |
550 | uint8_t* transfer_buffer; | |
551 | int count; | |
552 | ||
553 | if (!ep->ports[0].active) | |
554 | return; | |
555 | transfer_buffer = ep->urb->transfer_buffer; | |
556 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
557 | &transfer_buffer[2], | |
558 | ep->max_transfer - 2); | |
559 | if (count < 1) { | |
560 | ep->ports[0].active = 0; | |
561 | return; | |
562 | } | |
563 | transfer_buffer[0] = 0; | |
564 | transfer_buffer[1] = count; | |
565 | ep->urb->transfer_buffer_length = 2 + count; | |
566 | } | |
567 | ||
568 | static struct usb_protocol_ops snd_usbmidi_novation_ops = { | |
569 | .input = snd_usbmidi_novation_input, | |
570 | .output = snd_usbmidi_novation_output, | |
571 | }; | |
572 | ||
573 | /* | |
6155aff8 | 574 | * "raw" protocol: used by the MOTU FastLane. |
1da177e4 LT |
575 | */ |
576 | ||
6155aff8 CL |
577 | static void snd_usbmidi_raw_input(snd_usb_midi_in_endpoint_t* ep, |
578 | uint8_t* buffer, int buffer_length) | |
1da177e4 LT |
579 | { |
580 | snd_usbmidi_input_data(ep, 0, buffer, buffer_length); | |
581 | } | |
582 | ||
6155aff8 | 583 | static void snd_usbmidi_raw_output(snd_usb_midi_out_endpoint_t* ep) |
1da177e4 LT |
584 | { |
585 | int count; | |
586 | ||
587 | if (!ep->ports[0].active) | |
588 | return; | |
589 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
590 | ep->urb->transfer_buffer, | |
591 | ep->max_transfer); | |
592 | if (count < 1) { | |
593 | ep->ports[0].active = 0; | |
594 | return; | |
595 | } | |
596 | ep->urb->transfer_buffer_length = count; | |
597 | } | |
598 | ||
6155aff8 CL |
599 | static struct usb_protocol_ops snd_usbmidi_raw_ops = { |
600 | .input = snd_usbmidi_raw_input, | |
601 | .output = snd_usbmidi_raw_output, | |
1da177e4 LT |
602 | }; |
603 | ||
604 | /* | |
605 | * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching. | |
606 | */ | |
607 | ||
608 | static void snd_usbmidi_emagic_init_out(snd_usb_midi_out_endpoint_t* ep) | |
609 | { | |
610 | static const u8 init_data[] = { | |
611 | /* initialization magic: "get version" */ | |
612 | 0xf0, | |
613 | 0x00, 0x20, 0x31, /* Emagic */ | |
614 | 0x64, /* Unitor8 */ | |
615 | 0x0b, /* version number request */ | |
616 | 0x00, /* command version */ | |
617 | 0x00, /* EEPROM, box 0 */ | |
618 | 0xf7 | |
619 | }; | |
620 | send_bulk_static_data(ep, init_data, sizeof(init_data)); | |
621 | /* while we're at it, pour on more magic */ | |
622 | send_bulk_static_data(ep, init_data, sizeof(init_data)); | |
623 | } | |
624 | ||
625 | static void snd_usbmidi_emagic_finish_out(snd_usb_midi_out_endpoint_t* ep) | |
626 | { | |
627 | static const u8 finish_data[] = { | |
628 | /* switch to patch mode with last preset */ | |
629 | 0xf0, | |
630 | 0x00, 0x20, 0x31, /* Emagic */ | |
631 | 0x64, /* Unitor8 */ | |
632 | 0x10, /* patch switch command */ | |
633 | 0x00, /* command version */ | |
634 | 0x7f, /* to all boxes */ | |
635 | 0x40, /* last preset in EEPROM */ | |
636 | 0xf7 | |
637 | }; | |
638 | send_bulk_static_data(ep, finish_data, sizeof(finish_data)); | |
639 | } | |
640 | ||
641 | static void snd_usbmidi_emagic_input(snd_usb_midi_in_endpoint_t* ep, | |
642 | uint8_t* buffer, int buffer_length) | |
643 | { | |
c347e9fc CL |
644 | int i; |
645 | ||
646 | /* FF indicates end of valid data */ | |
647 | for (i = 0; i < buffer_length; ++i) | |
648 | if (buffer[i] == 0xff) { | |
649 | buffer_length = i; | |
650 | break; | |
651 | } | |
1da177e4 LT |
652 | |
653 | /* handle F5 at end of last buffer */ | |
654 | if (ep->seen_f5) | |
655 | goto switch_port; | |
656 | ||
657 | while (buffer_length > 0) { | |
1da177e4 LT |
658 | /* determine size of data until next F5 */ |
659 | for (i = 0; i < buffer_length; ++i) | |
660 | if (buffer[i] == 0xf5) | |
661 | break; | |
662 | snd_usbmidi_input_data(ep, ep->current_port, buffer, i); | |
663 | buffer += i; | |
664 | buffer_length -= i; | |
665 | ||
666 | if (buffer_length <= 0) | |
667 | break; | |
668 | /* assert(buffer[0] == 0xf5); */ | |
669 | ep->seen_f5 = 1; | |
670 | ++buffer; | |
671 | --buffer_length; | |
672 | ||
673 | switch_port: | |
674 | if (buffer_length <= 0) | |
675 | break; | |
676 | if (buffer[0] < 0x80) { | |
677 | ep->current_port = (buffer[0] - 1) & 15; | |
678 | ++buffer; | |
679 | --buffer_length; | |
680 | } | |
681 | ep->seen_f5 = 0; | |
682 | } | |
683 | } | |
684 | ||
685 | static void snd_usbmidi_emagic_output(snd_usb_midi_out_endpoint_t* ep) | |
686 | { | |
687 | int port0 = ep->current_port; | |
688 | uint8_t* buf = ep->urb->transfer_buffer; | |
689 | int buf_free = ep->max_transfer; | |
690 | int length, i; | |
691 | ||
692 | for (i = 0; i < 0x10; ++i) { | |
693 | /* round-robin, starting at the last current port */ | |
694 | int portnum = (port0 + i) & 15; | |
695 | usbmidi_out_port_t* port = &ep->ports[portnum]; | |
696 | ||
697 | if (!port->active) | |
698 | continue; | |
699 | if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) { | |
700 | port->active = 0; | |
701 | continue; | |
702 | } | |
703 | ||
704 | if (portnum != ep->current_port) { | |
705 | if (buf_free < 2) | |
706 | break; | |
707 | ep->current_port = portnum; | |
708 | buf[0] = 0xf5; | |
709 | buf[1] = (portnum + 1) & 15; | |
710 | buf += 2; | |
711 | buf_free -= 2; | |
712 | } | |
713 | ||
714 | if (buf_free < 1) | |
715 | break; | |
716 | length = snd_rawmidi_transmit(port->substream, buf, buf_free); | |
717 | if (length > 0) { | |
718 | buf += length; | |
719 | buf_free -= length; | |
720 | if (buf_free < 1) | |
721 | break; | |
722 | } | |
723 | } | |
c347e9fc CL |
724 | if (buf_free < ep->max_transfer && buf_free > 0) { |
725 | *buf = 0xff; | |
726 | --buf_free; | |
727 | } | |
1da177e4 LT |
728 | ep->urb->transfer_buffer_length = ep->max_transfer - buf_free; |
729 | } | |
730 | ||
731 | static struct usb_protocol_ops snd_usbmidi_emagic_ops = { | |
732 | .input = snd_usbmidi_emagic_input, | |
733 | .output = snd_usbmidi_emagic_output, | |
734 | .init_out_endpoint = snd_usbmidi_emagic_init_out, | |
735 | .finish_out_endpoint = snd_usbmidi_emagic_finish_out, | |
736 | }; | |
737 | ||
738 | ||
739 | static int snd_usbmidi_output_open(snd_rawmidi_substream_t* substream) | |
740 | { | |
741 | snd_usb_midi_t* umidi = substream->rmidi->private_data; | |
742 | usbmidi_out_port_t* port = NULL; | |
743 | int i, j; | |
744 | ||
745 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
746 | if (umidi->endpoints[i].out) | |
747 | for (j = 0; j < 0x10; ++j) | |
748 | if (umidi->endpoints[i].out->ports[j].substream == substream) { | |
749 | port = &umidi->endpoints[i].out->ports[j]; | |
750 | break; | |
751 | } | |
752 | if (!port) { | |
753 | snd_BUG(); | |
754 | return -ENXIO; | |
755 | } | |
756 | substream->runtime->private_data = port; | |
757 | port->state = STATE_UNKNOWN; | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static int snd_usbmidi_output_close(snd_rawmidi_substream_t* substream) | |
762 | { | |
763 | return 0; | |
764 | } | |
765 | ||
766 | static void snd_usbmidi_output_trigger(snd_rawmidi_substream_t* substream, int up) | |
767 | { | |
768 | usbmidi_out_port_t* port = (usbmidi_out_port_t*)substream->runtime->private_data; | |
769 | ||
770 | port->active = up; | |
771 | if (up) { | |
772 | if (port->ep->umidi->chip->shutdown) { | |
773 | /* gobble up remaining bytes to prevent wait in | |
774 | * snd_rawmidi_drain_output */ | |
775 | while (!snd_rawmidi_transmit_empty(substream)) | |
776 | snd_rawmidi_transmit_ack(substream, 1); | |
777 | return; | |
778 | } | |
779 | tasklet_hi_schedule(&port->ep->tasklet); | |
780 | } | |
781 | } | |
782 | ||
783 | static int snd_usbmidi_input_open(snd_rawmidi_substream_t* substream) | |
784 | { | |
785 | return 0; | |
786 | } | |
787 | ||
788 | static int snd_usbmidi_input_close(snd_rawmidi_substream_t* substream) | |
789 | { | |
790 | return 0; | |
791 | } | |
792 | ||
793 | static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t* substream, int up) | |
794 | { | |
795 | snd_usb_midi_t* umidi = substream->rmidi->private_data; | |
796 | ||
797 | if (up) | |
798 | set_bit(substream->number, &umidi->input_triggered); | |
799 | else | |
800 | clear_bit(substream->number, &umidi->input_triggered); | |
801 | } | |
802 | ||
803 | static snd_rawmidi_ops_t snd_usbmidi_output_ops = { | |
804 | .open = snd_usbmidi_output_open, | |
805 | .close = snd_usbmidi_output_close, | |
806 | .trigger = snd_usbmidi_output_trigger, | |
807 | }; | |
808 | ||
809 | static snd_rawmidi_ops_t snd_usbmidi_input_ops = { | |
810 | .open = snd_usbmidi_input_open, | |
811 | .close = snd_usbmidi_input_close, | |
812 | .trigger = snd_usbmidi_input_trigger | |
813 | }; | |
814 | ||
815 | /* | |
816 | * Frees an input endpoint. | |
817 | * May be called when ep hasn't been initialized completely. | |
818 | */ | |
819 | static void snd_usbmidi_in_endpoint_delete(snd_usb_midi_in_endpoint_t* ep) | |
820 | { | |
821 | if (ep->urb) { | |
55851f73 CL |
822 | usb_buffer_free(ep->umidi->chip->dev, |
823 | ep->urb->transfer_buffer_length, | |
824 | ep->urb->transfer_buffer, | |
825 | ep->urb->transfer_dma); | |
1da177e4 LT |
826 | usb_free_urb(ep->urb); |
827 | } | |
828 | kfree(ep); | |
829 | } | |
830 | ||
831 | /* | |
832 | * Creates an input endpoint. | |
833 | */ | |
834 | static int snd_usbmidi_in_endpoint_create(snd_usb_midi_t* umidi, | |
835 | snd_usb_midi_endpoint_info_t* ep_info, | |
836 | snd_usb_midi_endpoint_t* rep) | |
837 | { | |
838 | snd_usb_midi_in_endpoint_t* ep; | |
839 | void* buffer; | |
840 | unsigned int pipe; | |
841 | int length; | |
842 | ||
843 | rep->in = NULL; | |
844 | ep = kcalloc(1, sizeof(*ep), GFP_KERNEL); | |
845 | if (!ep) | |
846 | return -ENOMEM; | |
847 | ep->umidi = umidi; | |
848 | ||
849 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); | |
850 | if (!ep->urb) { | |
851 | snd_usbmidi_in_endpoint_delete(ep); | |
852 | return -ENOMEM; | |
853 | } | |
854 | if (ep_info->in_interval) | |
855 | pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep); | |
856 | else | |
857 | pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep); | |
858 | length = usb_maxpacket(umidi->chip->dev, pipe, 0); | |
55851f73 CL |
859 | buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL, |
860 | &ep->urb->transfer_dma); | |
1da177e4 LT |
861 | if (!buffer) { |
862 | snd_usbmidi_in_endpoint_delete(ep); | |
863 | return -ENOMEM; | |
864 | } | |
865 | if (ep_info->in_interval) | |
866 | usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, length, | |
867 | snd_usb_complete_callback(snd_usbmidi_in_urb_complete), | |
868 | ep, ep_info->in_interval); | |
869 | else | |
870 | usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, length, | |
871 | snd_usb_complete_callback(snd_usbmidi_in_urb_complete), | |
872 | ep); | |
55851f73 | 873 | ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1da177e4 LT |
874 | |
875 | rep->in = ep; | |
876 | return 0; | |
877 | } | |
878 | ||
879 | static unsigned int snd_usbmidi_count_bits(unsigned int x) | |
880 | { | |
881 | unsigned int bits = 0; | |
882 | ||
883 | for (; x; x >>= 1) | |
884 | bits += x & 1; | |
885 | return bits; | |
886 | } | |
887 | ||
888 | /* | |
889 | * Frees an output endpoint. | |
890 | * May be called when ep hasn't been initialized completely. | |
891 | */ | |
892 | static void snd_usbmidi_out_endpoint_delete(snd_usb_midi_out_endpoint_t* ep) | |
893 | { | |
1da177e4 | 894 | if (ep->urb) { |
55851f73 CL |
895 | usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer, |
896 | ep->urb->transfer_buffer, | |
897 | ep->urb->transfer_dma); | |
1da177e4 LT |
898 | usb_free_urb(ep->urb); |
899 | } | |
900 | kfree(ep); | |
901 | } | |
902 | ||
903 | /* | |
904 | * Creates an output endpoint, and initializes output ports. | |
905 | */ | |
906 | static int snd_usbmidi_out_endpoint_create(snd_usb_midi_t* umidi, | |
907 | snd_usb_midi_endpoint_info_t* ep_info, | |
908 | snd_usb_midi_endpoint_t* rep) | |
909 | { | |
910 | snd_usb_midi_out_endpoint_t* ep; | |
911 | int i; | |
912 | unsigned int pipe; | |
913 | void* buffer; | |
914 | ||
915 | rep->out = NULL; | |
916 | ep = kcalloc(1, sizeof(*ep), GFP_KERNEL); | |
917 | if (!ep) | |
918 | return -ENOMEM; | |
919 | ep->umidi = umidi; | |
920 | ||
921 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); | |
922 | if (!ep->urb) { | |
923 | snd_usbmidi_out_endpoint_delete(ep); | |
924 | return -ENOMEM; | |
925 | } | |
926 | /* we never use interrupt output pipes */ | |
927 | pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep); | |
928 | ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1); | |
55851f73 CL |
929 | buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer, |
930 | GFP_KERNEL, &ep->urb->transfer_dma); | |
1da177e4 LT |
931 | if (!buffer) { |
932 | snd_usbmidi_out_endpoint_delete(ep); | |
933 | return -ENOMEM; | |
934 | } | |
935 | usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, | |
936 | ep->max_transfer, | |
937 | snd_usb_complete_callback(snd_usbmidi_out_urb_complete), ep); | |
55851f73 | 938 | ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1da177e4 LT |
939 | |
940 | spin_lock_init(&ep->buffer_lock); | |
941 | tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep); | |
942 | ||
943 | for (i = 0; i < 0x10; ++i) | |
944 | if (ep_info->out_cables & (1 << i)) { | |
945 | ep->ports[i].ep = ep; | |
946 | ep->ports[i].cable = i << 4; | |
947 | } | |
948 | ||
949 | if (umidi->usb_protocol_ops->init_out_endpoint) | |
950 | umidi->usb_protocol_ops->init_out_endpoint(ep); | |
951 | ||
952 | rep->out = ep; | |
953 | return 0; | |
954 | } | |
955 | ||
956 | /* | |
957 | * Frees everything. | |
958 | */ | |
959 | static void snd_usbmidi_free(snd_usb_midi_t* umidi) | |
960 | { | |
961 | int i; | |
962 | ||
963 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
964 | snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i]; | |
965 | if (ep->out) | |
966 | snd_usbmidi_out_endpoint_delete(ep->out); | |
967 | if (ep->in) | |
968 | snd_usbmidi_in_endpoint_delete(ep->in); | |
969 | } | |
970 | kfree(umidi); | |
971 | } | |
972 | ||
973 | /* | |
974 | * Unlinks all URBs (must be done before the usb_device is deleted). | |
975 | */ | |
ee733397 | 976 | void snd_usbmidi_disconnect(struct list_head* p) |
1da177e4 LT |
977 | { |
978 | snd_usb_midi_t* umidi; | |
979 | int i; | |
980 | ||
981 | umidi = list_entry(p, snd_usb_midi_t, list); | |
c8846970 | 982 | del_timer_sync(&umidi->error_timer); |
1da177e4 LT |
983 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
984 | snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i]; | |
c8846970 CL |
985 | if (ep->out) |
986 | tasklet_kill(&ep->out->tasklet); | |
1da177e4 LT |
987 | if (ep->out && ep->out->urb) { |
988 | usb_kill_urb(ep->out->urb); | |
989 | if (umidi->usb_protocol_ops->finish_out_endpoint) | |
990 | umidi->usb_protocol_ops->finish_out_endpoint(ep->out); | |
991 | } | |
992 | if (ep->in && ep->in->urb) | |
993 | usb_kill_urb(ep->in->urb); | |
994 | } | |
995 | } | |
996 | ||
997 | static void snd_usbmidi_rawmidi_free(snd_rawmidi_t* rmidi) | |
998 | { | |
999 | snd_usb_midi_t* umidi = rmidi->private_data; | |
1000 | snd_usbmidi_free(umidi); | |
1001 | } | |
1002 | ||
1003 | static snd_rawmidi_substream_t* snd_usbmidi_find_substream(snd_usb_midi_t* umidi, | |
1004 | int stream, int number) | |
1005 | { | |
1006 | struct list_head* list; | |
1007 | ||
1008 | list_for_each(list, &umidi->rmidi->streams[stream].substreams) { | |
1009 | snd_rawmidi_substream_t* substream = list_entry(list, snd_rawmidi_substream_t, list); | |
1010 | if (substream->number == number) | |
1011 | return substream; | |
1012 | } | |
1013 | return NULL; | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * This list specifies names for ports that do not fit into the standard | |
1018 | * "(product) MIDI (n)" schema because they aren't external MIDI ports, | |
1019 | * such as internal control or synthesizer ports. | |
1020 | */ | |
1021 | static struct { | |
27d10f56 | 1022 | u32 id; |
1da177e4 LT |
1023 | int port; |
1024 | const char *name_format; | |
1025 | } snd_usbmidi_port_names[] = { | |
1026 | /* Roland UA-100 */ | |
27d10f56 | 1027 | { USB_ID(0x0582, 0x0000), 2, "%s Control" }, |
1da177e4 | 1028 | /* Roland SC-8850 */ |
27d10f56 CL |
1029 | { USB_ID(0x0582, 0x0003), 0, "%s Part A" }, |
1030 | { USB_ID(0x0582, 0x0003), 1, "%s Part B" }, | |
1031 | { USB_ID(0x0582, 0x0003), 2, "%s Part C" }, | |
1032 | { USB_ID(0x0582, 0x0003), 3, "%s Part D" }, | |
1033 | { USB_ID(0x0582, 0x0003), 4, "%s MIDI 1" }, | |
1034 | { USB_ID(0x0582, 0x0003), 5, "%s MIDI 2" }, | |
1da177e4 | 1035 | /* Roland U-8 */ |
27d10f56 CL |
1036 | { USB_ID(0x0582, 0x0004), 0, "%s MIDI" }, |
1037 | { USB_ID(0x0582, 0x0004), 1, "%s Control" }, | |
1da177e4 | 1038 | /* Roland SC-8820 */ |
27d10f56 CL |
1039 | { USB_ID(0x0582, 0x0007), 0, "%s Part A" }, |
1040 | { USB_ID(0x0582, 0x0007), 1, "%s Part B" }, | |
1041 | { USB_ID(0x0582, 0x0007), 2, "%s MIDI" }, | |
1da177e4 | 1042 | /* Roland SK-500 */ |
27d10f56 CL |
1043 | { USB_ID(0x0582, 0x000b), 0, "%s Part A" }, |
1044 | { USB_ID(0x0582, 0x000b), 1, "%s Part B" }, | |
1045 | { USB_ID(0x0582, 0x000b), 2, "%s MIDI" }, | |
1da177e4 | 1046 | /* Roland SC-D70 */ |
27d10f56 CL |
1047 | { USB_ID(0x0582, 0x000c), 0, "%s Part A" }, |
1048 | { USB_ID(0x0582, 0x000c), 1, "%s Part B" }, | |
1049 | { USB_ID(0x0582, 0x000c), 2, "%s MIDI" }, | |
1da177e4 | 1050 | /* Edirol UM-880 */ |
27d10f56 | 1051 | { USB_ID(0x0582, 0x0014), 8, "%s Control" }, |
1da177e4 | 1052 | /* Edirol SD-90 */ |
27d10f56 CL |
1053 | { USB_ID(0x0582, 0x0016), 0, "%s Part A" }, |
1054 | { USB_ID(0x0582, 0x0016), 1, "%s Part B" }, | |
1055 | { USB_ID(0x0582, 0x0016), 2, "%s MIDI 1" }, | |
1056 | { USB_ID(0x0582, 0x0016), 3, "%s MIDI 2" }, | |
1da177e4 | 1057 | /* Edirol UM-550 */ |
27d10f56 | 1058 | { USB_ID(0x0582, 0x0023), 5, "%s Control" }, |
1da177e4 | 1059 | /* Edirol SD-20 */ |
27d10f56 CL |
1060 | { USB_ID(0x0582, 0x0027), 0, "%s Part A" }, |
1061 | { USB_ID(0x0582, 0x0027), 1, "%s Part B" }, | |
1062 | { USB_ID(0x0582, 0x0027), 2, "%s MIDI" }, | |
1da177e4 | 1063 | /* Edirol SD-80 */ |
27d10f56 CL |
1064 | { USB_ID(0x0582, 0x0029), 0, "%s Part A" }, |
1065 | { USB_ID(0x0582, 0x0029), 1, "%s Part B" }, | |
1066 | { USB_ID(0x0582, 0x0029), 2, "%s MIDI 1" }, | |
1067 | { USB_ID(0x0582, 0x0029), 3, "%s MIDI 2" }, | |
1da177e4 | 1068 | /* Edirol UA-700 */ |
27d10f56 CL |
1069 | { USB_ID(0x0582, 0x002b), 0, "%s MIDI" }, |
1070 | { USB_ID(0x0582, 0x002b), 1, "%s Control" }, | |
1da177e4 | 1071 | /* Roland VariOS */ |
27d10f56 CL |
1072 | { USB_ID(0x0582, 0x002f), 0, "%s MIDI" }, |
1073 | { USB_ID(0x0582, 0x002f), 1, "%s External MIDI" }, | |
1074 | { USB_ID(0x0582, 0x002f), 2, "%s Sync" }, | |
1da177e4 | 1075 | /* Edirol PCR */ |
27d10f56 CL |
1076 | { USB_ID(0x0582, 0x0033), 0, "%s MIDI" }, |
1077 | { USB_ID(0x0582, 0x0033), 1, "%s 1" }, | |
1078 | { USB_ID(0x0582, 0x0033), 2, "%s 2" }, | |
1da177e4 | 1079 | /* BOSS GS-10 */ |
27d10f56 CL |
1080 | { USB_ID(0x0582, 0x003b), 0, "%s MIDI" }, |
1081 | { USB_ID(0x0582, 0x003b), 1, "%s Control" }, | |
1da177e4 | 1082 | /* Edirol UA-1000 */ |
27d10f56 CL |
1083 | { USB_ID(0x0582, 0x0044), 0, "%s MIDI" }, |
1084 | { USB_ID(0x0582, 0x0044), 1, "%s Control" }, | |
1da177e4 | 1085 | /* Edirol UR-80 */ |
27d10f56 CL |
1086 | { USB_ID(0x0582, 0x0048), 0, "%s MIDI" }, |
1087 | { USB_ID(0x0582, 0x0048), 1, "%s 1" }, | |
1088 | { USB_ID(0x0582, 0x0048), 2, "%s 2" }, | |
1da177e4 | 1089 | /* Edirol PCR-A */ |
27d10f56 CL |
1090 | { USB_ID(0x0582, 0x004d), 0, "%s MIDI" }, |
1091 | { USB_ID(0x0582, 0x004d), 1, "%s 1" }, | |
1092 | { USB_ID(0x0582, 0x004d), 2, "%s 2" }, | |
1da177e4 | 1093 | /* M-Audio MidiSport 8x8 */ |
27d10f56 CL |
1094 | { USB_ID(0x0763, 0x1031), 8, "%s Control" }, |
1095 | { USB_ID(0x0763, 0x1033), 8, "%s Control" }, | |
1da177e4 | 1096 | /* MOTU Fastlane */ |
27d10f56 CL |
1097 | { USB_ID(0x07fd, 0x0001), 0, "%s MIDI A" }, |
1098 | { USB_ID(0x07fd, 0x0001), 1, "%s MIDI B" }, | |
1da177e4 | 1099 | /* Emagic Unitor8/AMT8/MT4 */ |
27d10f56 CL |
1100 | { USB_ID(0x086a, 0x0001), 8, "%s Broadcast" }, |
1101 | { USB_ID(0x086a, 0x0002), 8, "%s Broadcast" }, | |
1102 | { USB_ID(0x086a, 0x0003), 4, "%s Broadcast" }, | |
1da177e4 LT |
1103 | }; |
1104 | ||
1105 | static void snd_usbmidi_init_substream(snd_usb_midi_t* umidi, | |
1106 | int stream, int number, | |
1107 | snd_rawmidi_substream_t** rsubstream) | |
1108 | { | |
1109 | int i; | |
1da177e4 LT |
1110 | const char *name_format; |
1111 | ||
1112 | snd_rawmidi_substream_t* substream = snd_usbmidi_find_substream(umidi, stream, number); | |
1113 | if (!substream) { | |
1114 | snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number); | |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | /* TODO: read port name from jack descriptor */ | |
1119 | name_format = "%s MIDI %d"; | |
1da177e4 | 1120 | for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_names); ++i) { |
27d10f56 | 1121 | if (snd_usbmidi_port_names[i].id == umidi->chip->usb_id && |
1da177e4 LT |
1122 | snd_usbmidi_port_names[i].port == number) { |
1123 | name_format = snd_usbmidi_port_names[i].name_format; | |
1124 | break; | |
1125 | } | |
1126 | } | |
1127 | snprintf(substream->name, sizeof(substream->name), | |
1128 | name_format, umidi->chip->card->shortname, number + 1); | |
1129 | ||
1130 | *rsubstream = substream; | |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * Creates the endpoints and their ports. | |
1135 | */ | |
1136 | static int snd_usbmidi_create_endpoints(snd_usb_midi_t* umidi, | |
1137 | snd_usb_midi_endpoint_info_t* endpoints) | |
1138 | { | |
1139 | int i, j, err; | |
1140 | int out_ports = 0, in_ports = 0; | |
1141 | ||
1142 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1143 | if (endpoints[i].out_cables) { | |
1144 | err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i], | |
1145 | &umidi->endpoints[i]); | |
1146 | if (err < 0) | |
1147 | return err; | |
1148 | } | |
1149 | if (endpoints[i].in_cables) { | |
1150 | err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i], | |
1151 | &umidi->endpoints[i]); | |
1152 | if (err < 0) | |
1153 | return err; | |
1154 | } | |
1155 | ||
1156 | for (j = 0; j < 0x10; ++j) { | |
1157 | if (endpoints[i].out_cables & (1 << j)) { | |
1158 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports, | |
1159 | &umidi->endpoints[i].out->ports[j].substream); | |
1160 | ++out_ports; | |
1161 | } | |
1162 | if (endpoints[i].in_cables & (1 << j)) { | |
1163 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports, | |
1164 | &umidi->endpoints[i].in->ports[j].substream); | |
1165 | ++in_ports; | |
1166 | } | |
1167 | } | |
1168 | } | |
1169 | snd_printdd(KERN_INFO "created %d output and %d input ports\n", | |
1170 | out_ports, in_ports); | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | /* | |
1175 | * Returns MIDIStreaming device capabilities. | |
1176 | */ | |
1177 | static int snd_usbmidi_get_ms_info(snd_usb_midi_t* umidi, | |
1178 | snd_usb_midi_endpoint_info_t* endpoints) | |
1179 | { | |
1180 | struct usb_interface* intf; | |
1181 | struct usb_host_interface *hostif; | |
1182 | struct usb_interface_descriptor* intfd; | |
1183 | struct usb_ms_header_descriptor* ms_header; | |
1184 | struct usb_host_endpoint *hostep; | |
1185 | struct usb_endpoint_descriptor* ep; | |
1186 | struct usb_ms_endpoint_descriptor* ms_ep; | |
1187 | int i, epidx; | |
1188 | ||
1189 | intf = umidi->iface; | |
1190 | if (!intf) | |
1191 | return -ENXIO; | |
1192 | hostif = &intf->altsetting[0]; | |
1193 | intfd = get_iface_desc(hostif); | |
1194 | ms_header = (struct usb_ms_header_descriptor*)hostif->extra; | |
1195 | if (hostif->extralen >= 7 && | |
1196 | ms_header->bLength >= 7 && | |
1197 | ms_header->bDescriptorType == USB_DT_CS_INTERFACE && | |
1198 | ms_header->bDescriptorSubtype == HEADER) | |
1199 | snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n", | |
1200 | ms_header->bcdMSC[1], ms_header->bcdMSC[0]); | |
1201 | else | |
1202 | snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n"); | |
1203 | ||
1204 | epidx = 0; | |
1205 | for (i = 0; i < intfd->bNumEndpoints; ++i) { | |
1206 | hostep = &hostif->endpoint[i]; | |
1207 | ep = get_ep_desc(hostep); | |
1208 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK && | |
1209 | (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1210 | continue; | |
1211 | ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra; | |
1212 | if (hostep->extralen < 4 || | |
1213 | ms_ep->bLength < 4 || | |
1214 | ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT || | |
1215 | ms_ep->bDescriptorSubtype != MS_GENERAL) | |
1216 | continue; | |
1217 | if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
1218 | if (endpoints[epidx].out_ep) { | |
1219 | if (++epidx >= MIDI_MAX_ENDPOINTS) { | |
1220 | snd_printk(KERN_WARNING "too many endpoints\n"); | |
1221 | break; | |
1222 | } | |
1223 | } | |
1224 | endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1225 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1226 | endpoints[epidx].out_interval = ep->bInterval; | |
1227 | endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; | |
1228 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", | |
1229 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); | |
1230 | } else { | |
1231 | if (endpoints[epidx].in_ep) { | |
1232 | if (++epidx >= MIDI_MAX_ENDPOINTS) { | |
1233 | snd_printk(KERN_WARNING "too many endpoints\n"); | |
1234 | break; | |
1235 | } | |
1236 | } | |
1237 | endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1238 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1239 | endpoints[epidx].in_interval = ep->bInterval; | |
1240 | endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; | |
1241 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", | |
1242 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); | |
1243 | } | |
1244 | } | |
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * On Roland devices, use the second alternate setting to be able to use | |
1250 | * the interrupt input endpoint. | |
1251 | */ | |
1252 | static void snd_usbmidi_switch_roland_altsetting(snd_usb_midi_t* umidi) | |
1253 | { | |
1254 | struct usb_interface* intf; | |
1255 | struct usb_host_interface *hostif; | |
1256 | struct usb_interface_descriptor* intfd; | |
1257 | ||
1258 | intf = umidi->iface; | |
1259 | if (!intf || intf->num_altsetting != 2) | |
1260 | return; | |
1261 | ||
1262 | hostif = &intf->altsetting[1]; | |
1263 | intfd = get_iface_desc(hostif); | |
1264 | if (intfd->bNumEndpoints != 2 || | |
1265 | (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK || | |
1266 | (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1267 | return; | |
1268 | ||
1269 | snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n", | |
1270 | intfd->bAlternateSetting); | |
1271 | usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber, | |
1272 | intfd->bAlternateSetting); | |
1273 | } | |
1274 | ||
1275 | /* | |
1276 | * Try to find any usable endpoints in the interface. | |
1277 | */ | |
1278 | static int snd_usbmidi_detect_endpoints(snd_usb_midi_t* umidi, | |
1279 | snd_usb_midi_endpoint_info_t* endpoint, | |
1280 | int max_endpoints) | |
1281 | { | |
1282 | struct usb_interface* intf; | |
1283 | struct usb_host_interface *hostif; | |
1284 | struct usb_interface_descriptor* intfd; | |
1285 | struct usb_endpoint_descriptor* epd; | |
1286 | int i, out_eps = 0, in_eps = 0; | |
1287 | ||
27d10f56 | 1288 | if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582) |
1da177e4 LT |
1289 | snd_usbmidi_switch_roland_altsetting(umidi); |
1290 | ||
c1ab5d59 CL |
1291 | if (endpoint[0].out_ep || endpoint[0].in_ep) |
1292 | return 0; | |
1293 | ||
1da177e4 LT |
1294 | intf = umidi->iface; |
1295 | if (!intf || intf->num_altsetting < 1) | |
1296 | return -ENOENT; | |
1297 | hostif = intf->cur_altsetting; | |
1298 | intfd = get_iface_desc(hostif); | |
1299 | ||
1300 | for (i = 0; i < intfd->bNumEndpoints; ++i) { | |
1301 | epd = get_endpoint(hostif, i); | |
1302 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK && | |
1303 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1304 | continue; | |
1305 | if (out_eps < max_endpoints && | |
1306 | (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
1307 | endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1308 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1309 | endpoint[out_eps].out_interval = epd->bInterval; | |
1310 | ++out_eps; | |
1311 | } | |
1312 | if (in_eps < max_endpoints && | |
1313 | (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) { | |
1314 | endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1315 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1316 | endpoint[in_eps].in_interval = epd->bInterval; | |
1317 | ++in_eps; | |
1318 | } | |
1319 | } | |
1320 | return (out_eps || in_eps) ? 0 : -ENOENT; | |
1321 | } | |
1322 | ||
1323 | /* | |
1324 | * Detects the endpoints for one-port-per-endpoint protocols. | |
1325 | */ | |
1326 | static int snd_usbmidi_detect_per_port_endpoints(snd_usb_midi_t* umidi, | |
1327 | snd_usb_midi_endpoint_info_t* endpoints) | |
1328 | { | |
1329 | int err, i; | |
1330 | ||
1331 | err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS); | |
1332 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1333 | if (endpoints[i].out_ep) | |
1334 | endpoints[i].out_cables = 0x0001; | |
1335 | if (endpoints[i].in_ep) | |
1336 | endpoints[i].in_cables = 0x0001; | |
1337 | } | |
1338 | return err; | |
1339 | } | |
1340 | ||
1341 | /* | |
1342 | * Detects the endpoints and ports of Yamaha devices. | |
1343 | */ | |
1344 | static int snd_usbmidi_detect_yamaha(snd_usb_midi_t* umidi, | |
1345 | snd_usb_midi_endpoint_info_t* endpoint) | |
1346 | { | |
1347 | struct usb_interface* intf; | |
1348 | struct usb_host_interface *hostif; | |
1349 | struct usb_interface_descriptor* intfd; | |
1350 | uint8_t* cs_desc; | |
1351 | ||
1352 | intf = umidi->iface; | |
1353 | if (!intf) | |
1354 | return -ENOENT; | |
1355 | hostif = intf->altsetting; | |
1356 | intfd = get_iface_desc(hostif); | |
1357 | if (intfd->bNumEndpoints < 1) | |
1358 | return -ENOENT; | |
1359 | ||
1360 | /* | |
1361 | * For each port there is one MIDI_IN/OUT_JACK descriptor, not | |
1362 | * necessarily with any useful contents. So simply count 'em. | |
1363 | */ | |
1364 | for (cs_desc = hostif->extra; | |
1365 | cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2; | |
1366 | cs_desc += cs_desc[0]) { | |
1367 | if (cs_desc[1] == CS_AUDIO_INTERFACE) { | |
1368 | if (cs_desc[2] == MIDI_IN_JACK) | |
1369 | endpoint->in_cables = (endpoint->in_cables << 1) | 1; | |
1370 | else if (cs_desc[2] == MIDI_OUT_JACK) | |
1371 | endpoint->out_cables = (endpoint->out_cables << 1) | 1; | |
1372 | } | |
1373 | } | |
1374 | if (!endpoint->in_cables && !endpoint->out_cables) | |
1375 | return -ENOENT; | |
1376 | ||
1377 | return snd_usbmidi_detect_endpoints(umidi, endpoint, 1); | |
1378 | } | |
1379 | ||
1380 | /* | |
1381 | * Creates the endpoints and their ports for Midiman devices. | |
1382 | */ | |
1383 | static int snd_usbmidi_create_endpoints_midiman(snd_usb_midi_t* umidi, | |
1384 | snd_usb_midi_endpoint_info_t* endpoint) | |
1385 | { | |
1386 | snd_usb_midi_endpoint_info_t ep_info; | |
1387 | struct usb_interface* intf; | |
1388 | struct usb_host_interface *hostif; | |
1389 | struct usb_interface_descriptor* intfd; | |
1390 | struct usb_endpoint_descriptor* epd; | |
1391 | int cable, err; | |
1392 | ||
1393 | intf = umidi->iface; | |
1394 | if (!intf) | |
1395 | return -ENOENT; | |
1396 | hostif = intf->altsetting; | |
1397 | intfd = get_iface_desc(hostif); | |
1398 | /* | |
1399 | * The various MidiSport devices have more or less random endpoint | |
1400 | * numbers, so we have to identify the endpoints by their index in | |
1401 | * the descriptor array, like the driver for that other OS does. | |
1402 | * | |
1403 | * There is one interrupt input endpoint for all input ports, one | |
1404 | * bulk output endpoint for even-numbered ports, and one for odd- | |
1405 | * numbered ports. Both bulk output endpoints have corresponding | |
1406 | * input bulk endpoints (at indices 1 and 3) which aren't used. | |
1407 | */ | |
1408 | if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) { | |
1409 | snd_printdd(KERN_ERR "not enough endpoints\n"); | |
1410 | return -ENOENT; | |
1411 | } | |
1412 | ||
1413 | epd = get_endpoint(hostif, 0); | |
1414 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN || | |
1415 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) { | |
1416 | snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n"); | |
1417 | return -ENXIO; | |
1418 | } | |
1419 | epd = get_endpoint(hostif, 2); | |
1420 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT || | |
1421 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) { | |
1422 | snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n"); | |
1423 | return -ENXIO; | |
1424 | } | |
1425 | if (endpoint->out_cables > 0x0001) { | |
1426 | epd = get_endpoint(hostif, 4); | |
1427 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT || | |
1428 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) { | |
1429 | snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n"); | |
1430 | return -ENXIO; | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1435 | ep_info.out_cables = endpoint->out_cables & 0x5555; | |
1436 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); | |
1437 | if (err < 0) | |
1438 | return err; | |
1439 | ||
1440 | ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1441 | ep_info.in_interval = get_endpoint(hostif, 0)->bInterval; | |
1442 | ep_info.in_cables = endpoint->in_cables; | |
1443 | err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); | |
1444 | if (err < 0) | |
1445 | return err; | |
1446 | ||
1447 | if (endpoint->out_cables > 0x0001) { | |
1448 | ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1449 | ep_info.out_cables = endpoint->out_cables & 0xaaaa; | |
1450 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]); | |
1451 | if (err < 0) | |
1452 | return err; | |
1453 | } | |
1454 | ||
1455 | for (cable = 0; cable < 0x10; ++cable) { | |
1456 | if (endpoint->out_cables & (1 << cable)) | |
1457 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable, | |
1458 | &umidi->endpoints[cable & 1].out->ports[cable].substream); | |
1459 | if (endpoint->in_cables & (1 << cable)) | |
1460 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable, | |
1461 | &umidi->endpoints[0].in->ports[cable].substream); | |
1462 | } | |
1463 | return 0; | |
1464 | } | |
1465 | ||
1466 | static int snd_usbmidi_create_rawmidi(snd_usb_midi_t* umidi, | |
1467 | int out_ports, int in_ports) | |
1468 | { | |
1469 | snd_rawmidi_t* rmidi; | |
1470 | int err; | |
1471 | ||
1472 | err = snd_rawmidi_new(umidi->chip->card, "USB MIDI", | |
1473 | umidi->chip->next_midi_device++, | |
1474 | out_ports, in_ports, &rmidi); | |
1475 | if (err < 0) | |
1476 | return err; | |
1477 | strcpy(rmidi->name, umidi->chip->card->shortname); | |
1478 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | | |
1479 | SNDRV_RAWMIDI_INFO_INPUT | | |
1480 | SNDRV_RAWMIDI_INFO_DUPLEX; | |
1481 | rmidi->private_data = umidi; | |
1482 | rmidi->private_free = snd_usbmidi_rawmidi_free; | |
1483 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops); | |
1484 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops); | |
1485 | ||
1486 | umidi->rmidi = rmidi; | |
1487 | return 0; | |
1488 | } | |
1489 | ||
1490 | /* | |
1491 | * Temporarily stop input. | |
1492 | */ | |
1493 | void snd_usbmidi_input_stop(struct list_head* p) | |
1494 | { | |
1495 | snd_usb_midi_t* umidi; | |
1496 | int i; | |
1497 | ||
1498 | umidi = list_entry(p, snd_usb_midi_t, list); | |
1499 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1500 | snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i]; | |
1501 | if (ep->in) | |
1502 | usb_kill_urb(ep->in->urb); | |
1503 | } | |
1504 | } | |
1505 | ||
1506 | static void snd_usbmidi_input_start_ep(snd_usb_midi_in_endpoint_t* ep) | |
1507 | { | |
1508 | if (ep) { | |
1509 | struct urb* urb = ep->urb; | |
1510 | urb->dev = ep->umidi->chip->dev; | |
1511 | snd_usbmidi_submit_urb(urb, GFP_KERNEL); | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | /* | |
1516 | * Resume input after a call to snd_usbmidi_input_stop(). | |
1517 | */ | |
1518 | void snd_usbmidi_input_start(struct list_head* p) | |
1519 | { | |
1520 | snd_usb_midi_t* umidi; | |
1521 | int i; | |
1522 | ||
1523 | umidi = list_entry(p, snd_usb_midi_t, list); | |
1524 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
1525 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); | |
1526 | } | |
1527 | ||
1528 | /* | |
1529 | * Creates and registers everything needed for a MIDI streaming interface. | |
1530 | */ | |
1531 | int snd_usb_create_midi_interface(snd_usb_audio_t* chip, | |
1532 | struct usb_interface* iface, | |
1533 | const snd_usb_audio_quirk_t* quirk) | |
1534 | { | |
1535 | snd_usb_midi_t* umidi; | |
1536 | snd_usb_midi_endpoint_info_t endpoints[MIDI_MAX_ENDPOINTS]; | |
1537 | int out_ports, in_ports; | |
1538 | int i, err; | |
1539 | ||
1540 | umidi = kcalloc(1, sizeof(*umidi), GFP_KERNEL); | |
1541 | if (!umidi) | |
1542 | return -ENOMEM; | |
1543 | umidi->chip = chip; | |
1544 | umidi->iface = iface; | |
1545 | umidi->quirk = quirk; | |
1546 | umidi->usb_protocol_ops = &snd_usbmidi_standard_ops; | |
c8846970 CL |
1547 | init_timer(&umidi->error_timer); |
1548 | umidi->error_timer.function = snd_usbmidi_error_timer; | |
1549 | umidi->error_timer.data = (unsigned long)umidi; | |
1da177e4 LT |
1550 | |
1551 | /* detect the endpoint(s) to use */ | |
1552 | memset(endpoints, 0, sizeof(endpoints)); | |
1553 | if (!quirk) { | |
1554 | err = snd_usbmidi_get_ms_info(umidi, endpoints); | |
1555 | } else { | |
1556 | switch (quirk->type) { | |
1557 | case QUIRK_MIDI_FIXED_ENDPOINT: | |
1558 | memcpy(&endpoints[0], quirk->data, | |
1559 | sizeof(snd_usb_midi_endpoint_info_t)); | |
1560 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); | |
1561 | break; | |
1562 | case QUIRK_MIDI_YAMAHA: | |
1563 | err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]); | |
1564 | break; | |
1565 | case QUIRK_MIDI_MIDIMAN: | |
1566 | umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops; | |
1567 | memcpy(&endpoints[0], quirk->data, | |
1568 | sizeof(snd_usb_midi_endpoint_info_t)); | |
1569 | err = 0; | |
1570 | break; | |
1571 | case QUIRK_MIDI_NOVATION: | |
1572 | umidi->usb_protocol_ops = &snd_usbmidi_novation_ops; | |
1573 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); | |
1574 | break; | |
6155aff8 CL |
1575 | case QUIRK_MIDI_RAW: |
1576 | umidi->usb_protocol_ops = &snd_usbmidi_raw_ops; | |
1da177e4 LT |
1577 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
1578 | break; | |
1579 | case QUIRK_MIDI_EMAGIC: | |
1580 | umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops; | |
1581 | memcpy(&endpoints[0], quirk->data, | |
1582 | sizeof(snd_usb_midi_endpoint_info_t)); | |
1583 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); | |
1584 | break; | |
f38275fe CL |
1585 | case QUIRK_MIDI_MIDITECH: |
1586 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); | |
1587 | break; | |
1da177e4 LT |
1588 | default: |
1589 | snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); | |
1590 | err = -ENXIO; | |
1591 | break; | |
1592 | } | |
1593 | } | |
1594 | if (err < 0) { | |
1595 | kfree(umidi); | |
1596 | return err; | |
1597 | } | |
1598 | ||
1599 | /* create rawmidi device */ | |
1600 | out_ports = 0; | |
1601 | in_ports = 0; | |
1602 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1603 | out_ports += snd_usbmidi_count_bits(endpoints[i].out_cables); | |
1604 | in_ports += snd_usbmidi_count_bits(endpoints[i].in_cables); | |
1605 | } | |
1606 | err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports); | |
1607 | if (err < 0) { | |
1608 | kfree(umidi); | |
1609 | return err; | |
1610 | } | |
1611 | ||
1612 | /* create endpoint/port structures */ | |
1613 | if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN) | |
1614 | err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]); | |
1615 | else | |
1616 | err = snd_usbmidi_create_endpoints(umidi, endpoints); | |
1617 | if (err < 0) { | |
1618 | snd_usbmidi_free(umidi); | |
1619 | return err; | |
1620 | } | |
1621 | ||
1622 | list_add(&umidi->list, &umidi->chip->midi_list); | |
1623 | ||
1624 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
1625 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | EXPORT_SYMBOL(snd_usb_create_midi_interface); | |
1630 | EXPORT_SYMBOL(snd_usbmidi_input_stop); | |
1631 | EXPORT_SYMBOL(snd_usbmidi_input_start); | |
1632 | EXPORT_SYMBOL(snd_usbmidi_disconnect); |