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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * usbmidi.c - ALSA USB MIDI driver | |
3 | * | |
d05cc104 | 4 | * Copyright (c) 2002-2007 Clemens Ladisch |
1da177e4 LT |
5 | * All rights reserved. |
6 | * | |
7 | * Based on the OSS usb-midi driver by NAGANO Daisuke, | |
8 | * NetBSD's umidi driver by Takuya SHIOZAKI, | |
9 | * the "USB Device Class Definition for MIDI Devices" by Roland | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. The name of the author may not be used to endorse or promote products | |
18 | * derived from this software without specific prior written permission. | |
19 | * | |
20 | * Alternatively, this software may be distributed and/or modified under the | |
21 | * terms of the GNU General Public License as published by the Free Software | |
22 | * Foundation; either version 2 of the License, or (at your option) any later | |
23 | * version. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR | |
29 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
35 | * SUCH DAMAGE. | |
36 | */ | |
37 | ||
1da177e4 LT |
38 | #include <linux/kernel.h> |
39 | #include <linux/types.h> | |
40 | #include <linux/bitops.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/spinlock.h> | |
43 | #include <linux/string.h> | |
44 | #include <linux/init.h> | |
45 | #include <linux/slab.h> | |
c8846970 | 46 | #include <linux/timer.h> |
1da177e4 LT |
47 | #include <linux/usb.h> |
48 | #include <sound/core.h> | |
1da177e4 | 49 | #include <sound/rawmidi.h> |
a7b928ac | 50 | #include <sound/asequencer.h> |
1da177e4 LT |
51 | #include "usbaudio.h" |
52 | ||
53 | ||
54 | /* | |
55 | * define this to log all USB packets | |
56 | */ | |
57 | /* #define DUMP_PACKETS */ | |
58 | ||
c8846970 CL |
59 | /* |
60 | * how long to wait after some USB errors, so that khubd can disconnect() us | |
61 | * without too many spurious errors | |
62 | */ | |
63 | #define ERROR_DELAY_JIFFIES (HZ / 10) | |
64 | ||
1da177e4 LT |
65 | |
66 | MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); | |
67 | MODULE_DESCRIPTION("USB Audio/MIDI helper module"); | |
68 | MODULE_LICENSE("Dual BSD/GPL"); | |
69 | ||
70 | ||
71 | struct usb_ms_header_descriptor { | |
72 | __u8 bLength; | |
73 | __u8 bDescriptorType; | |
74 | __u8 bDescriptorSubtype; | |
75 | __u8 bcdMSC[2]; | |
76 | __le16 wTotalLength; | |
77 | } __attribute__ ((packed)); | |
78 | ||
79 | struct usb_ms_endpoint_descriptor { | |
80 | __u8 bLength; | |
81 | __u8 bDescriptorType; | |
82 | __u8 bDescriptorSubtype; | |
83 | __u8 bNumEmbMIDIJack; | |
84 | __u8 baAssocJackID[0]; | |
85 | } __attribute__ ((packed)); | |
86 | ||
86e07d34 TI |
87 | struct snd_usb_midi_in_endpoint; |
88 | struct snd_usb_midi_out_endpoint; | |
89 | struct snd_usb_midi_endpoint; | |
1da177e4 LT |
90 | |
91 | struct usb_protocol_ops { | |
86e07d34 TI |
92 | void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int); |
93 | void (*output)(struct snd_usb_midi_out_endpoint*); | |
1da177e4 | 94 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); |
86e07d34 TI |
95 | void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*); |
96 | void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*); | |
1da177e4 LT |
97 | }; |
98 | ||
99 | struct snd_usb_midi { | |
86e07d34 | 100 | struct snd_usb_audio *chip; |
1da177e4 | 101 | struct usb_interface *iface; |
86e07d34 TI |
102 | const struct snd_usb_audio_quirk *quirk; |
103 | struct snd_rawmidi *rmidi; | |
1da177e4 LT |
104 | struct usb_protocol_ops* usb_protocol_ops; |
105 | struct list_head list; | |
c8846970 | 106 | struct timer_list error_timer; |
c0792e00 | 107 | spinlock_t disc_lock; |
1da177e4 LT |
108 | |
109 | struct snd_usb_midi_endpoint { | |
86e07d34 TI |
110 | struct snd_usb_midi_out_endpoint *out; |
111 | struct snd_usb_midi_in_endpoint *in; | |
1da177e4 LT |
112 | } endpoints[MIDI_MAX_ENDPOINTS]; |
113 | unsigned long input_triggered; | |
c0792e00 | 114 | unsigned char disconnected; |
1da177e4 LT |
115 | }; |
116 | ||
117 | struct snd_usb_midi_out_endpoint { | |
86e07d34 | 118 | struct snd_usb_midi* umidi; |
1da177e4 LT |
119 | struct urb* urb; |
120 | int urb_active; | |
121 | int max_transfer; /* size of urb buffer */ | |
122 | struct tasklet_struct tasklet; | |
123 | ||
124 | spinlock_t buffer_lock; | |
125 | ||
126 | struct usbmidi_out_port { | |
86e07d34 TI |
127 | struct snd_usb_midi_out_endpoint* ep; |
128 | struct snd_rawmidi_substream *substream; | |
1da177e4 LT |
129 | int active; |
130 | uint8_t cable; /* cable number << 4 */ | |
131 | uint8_t state; | |
132 | #define STATE_UNKNOWN 0 | |
133 | #define STATE_1PARAM 1 | |
134 | #define STATE_2PARAM_1 2 | |
135 | #define STATE_2PARAM_2 3 | |
136 | #define STATE_SYSEX_0 4 | |
137 | #define STATE_SYSEX_1 5 | |
138 | #define STATE_SYSEX_2 6 | |
139 | uint8_t data[2]; | |
140 | } ports[0x10]; | |
141 | int current_port; | |
142 | }; | |
143 | ||
144 | struct snd_usb_midi_in_endpoint { | |
86e07d34 | 145 | struct snd_usb_midi* umidi; |
1da177e4 LT |
146 | struct urb* urb; |
147 | struct usbmidi_in_port { | |
86e07d34 | 148 | struct snd_rawmidi_substream *substream; |
d05cc104 | 149 | u8 running_status_length; |
1da177e4 | 150 | } ports[0x10]; |
c8846970 CL |
151 | u8 seen_f5; |
152 | u8 error_resubmit; | |
1da177e4 LT |
153 | int current_port; |
154 | }; | |
155 | ||
86e07d34 | 156 | static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep); |
1da177e4 LT |
157 | |
158 | static const uint8_t snd_usbmidi_cin_length[] = { | |
159 | 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 | |
160 | }; | |
161 | ||
162 | /* | |
163 | * Submits the URB, with error handling. | |
164 | */ | |
55016f10 | 165 | static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags) |
1da177e4 LT |
166 | { |
167 | int err = usb_submit_urb(urb, flags); | |
168 | if (err < 0 && err != -ENODEV) | |
169 | snd_printk(KERN_ERR "usb_submit_urb: %d\n", err); | |
170 | return err; | |
171 | } | |
172 | ||
173 | /* | |
174 | * Error handling for URB completion functions. | |
175 | */ | |
176 | static int snd_usbmidi_urb_error(int status) | |
177 | { | |
c8846970 CL |
178 | switch (status) { |
179 | /* manually unlinked, or device gone */ | |
180 | case -ENOENT: | |
181 | case -ECONNRESET: | |
182 | case -ESHUTDOWN: | |
183 | case -ENODEV: | |
184 | return -ENODEV; | |
185 | /* errors that might occur during unplugging */ | |
38e2bfc9 PZ |
186 | case -EPROTO: |
187 | case -ETIME: | |
188 | case -EILSEQ: | |
c8846970 CL |
189 | return -EIO; |
190 | default: | |
191 | snd_printk(KERN_ERR "urb status %d\n", status); | |
192 | return 0; /* continue */ | |
193 | } | |
1da177e4 LT |
194 | } |
195 | ||
196 | /* | |
197 | * Receives a chunk of MIDI data. | |
198 | */ | |
86e07d34 | 199 | static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx, |
1da177e4 LT |
200 | uint8_t* data, int length) |
201 | { | |
86e07d34 | 202 | struct usbmidi_in_port* port = &ep->ports[portidx]; |
1da177e4 LT |
203 | |
204 | if (!port->substream) { | |
205 | snd_printd("unexpected port %d!\n", portidx); | |
206 | return; | |
207 | } | |
208 | if (!test_bit(port->substream->number, &ep->umidi->input_triggered)) | |
209 | return; | |
210 | snd_rawmidi_receive(port->substream, data, length); | |
211 | } | |
212 | ||
213 | #ifdef DUMP_PACKETS | |
214 | static void dump_urb(const char *type, const u8 *data, int length) | |
215 | { | |
216 | snd_printk(KERN_DEBUG "%s packet: [", type); | |
217 | for (; length > 0; ++data, --length) | |
218 | printk(" %02x", *data); | |
219 | printk(" ]\n"); | |
220 | } | |
221 | #else | |
222 | #define dump_urb(type, data, length) /* nothing */ | |
223 | #endif | |
224 | ||
225 | /* | |
226 | * Processes the data read from the device. | |
227 | */ | |
7d12e780 | 228 | static void snd_usbmidi_in_urb_complete(struct urb* urb) |
1da177e4 | 229 | { |
86e07d34 | 230 | struct snd_usb_midi_in_endpoint* ep = urb->context; |
1da177e4 LT |
231 | |
232 | if (urb->status == 0) { | |
233 | dump_urb("received", urb->transfer_buffer, urb->actual_length); | |
234 | ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, | |
235 | urb->actual_length); | |
236 | } else { | |
c8846970 CL |
237 | int err = snd_usbmidi_urb_error(urb->status); |
238 | if (err < 0) { | |
239 | if (err != -ENODEV) { | |
240 | ep->error_resubmit = 1; | |
241 | mod_timer(&ep->umidi->error_timer, | |
242 | jiffies + ERROR_DELAY_JIFFIES); | |
243 | } | |
1da177e4 | 244 | return; |
c8846970 | 245 | } |
1da177e4 LT |
246 | } |
247 | ||
3cfc1eb1 CL |
248 | urb->dev = ep->umidi->chip->dev; |
249 | snd_usbmidi_submit_urb(urb, GFP_ATOMIC); | |
1da177e4 LT |
250 | } |
251 | ||
7d12e780 | 252 | static void snd_usbmidi_out_urb_complete(struct urb* urb) |
1da177e4 | 253 | { |
86e07d34 | 254 | struct snd_usb_midi_out_endpoint* ep = urb->context; |
1da177e4 LT |
255 | |
256 | spin_lock(&ep->buffer_lock); | |
257 | ep->urb_active = 0; | |
258 | spin_unlock(&ep->buffer_lock); | |
259 | if (urb->status < 0) { | |
c8846970 CL |
260 | int err = snd_usbmidi_urb_error(urb->status); |
261 | if (err < 0) { | |
262 | if (err != -ENODEV) | |
263 | mod_timer(&ep->umidi->error_timer, | |
264 | jiffies + ERROR_DELAY_JIFFIES); | |
1da177e4 | 265 | return; |
c8846970 | 266 | } |
1da177e4 LT |
267 | } |
268 | snd_usbmidi_do_output(ep); | |
269 | } | |
270 | ||
271 | /* | |
272 | * This is called when some data should be transferred to the device | |
273 | * (from one or more substreams). | |
274 | */ | |
86e07d34 | 275 | static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
276 | { |
277 | struct urb* urb = ep->urb; | |
278 | unsigned long flags; | |
279 | ||
280 | spin_lock_irqsave(&ep->buffer_lock, flags); | |
281 | if (ep->urb_active || ep->umidi->chip->shutdown) { | |
282 | spin_unlock_irqrestore(&ep->buffer_lock, flags); | |
283 | return; | |
284 | } | |
285 | ||
286 | urb->transfer_buffer_length = 0; | |
287 | ep->umidi->usb_protocol_ops->output(ep); | |
288 | ||
289 | if (urb->transfer_buffer_length > 0) { | |
290 | dump_urb("sending", urb->transfer_buffer, | |
291 | urb->transfer_buffer_length); | |
292 | urb->dev = ep->umidi->chip->dev; | |
293 | ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0; | |
294 | } | |
295 | spin_unlock_irqrestore(&ep->buffer_lock, flags); | |
296 | } | |
297 | ||
298 | static void snd_usbmidi_out_tasklet(unsigned long data) | |
299 | { | |
86e07d34 | 300 | struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data; |
1da177e4 LT |
301 | |
302 | snd_usbmidi_do_output(ep); | |
303 | } | |
304 | ||
c8846970 CL |
305 | /* called after transfers had been interrupted due to some USB error */ |
306 | static void snd_usbmidi_error_timer(unsigned long data) | |
307 | { | |
86e07d34 | 308 | struct snd_usb_midi *umidi = (struct snd_usb_midi *)data; |
c8846970 CL |
309 | int i; |
310 | ||
c0792e00 TI |
311 | spin_lock(&umidi->disc_lock); |
312 | if (umidi->disconnected) { | |
313 | spin_unlock(&umidi->disc_lock); | |
314 | return; | |
315 | } | |
c8846970 | 316 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
86e07d34 | 317 | struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in; |
c8846970 CL |
318 | if (in && in->error_resubmit) { |
319 | in->error_resubmit = 0; | |
320 | in->urb->dev = umidi->chip->dev; | |
321 | snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC); | |
322 | } | |
323 | if (umidi->endpoints[i].out) | |
324 | snd_usbmidi_do_output(umidi->endpoints[i].out); | |
325 | } | |
c0792e00 | 326 | spin_unlock(&umidi->disc_lock); |
c8846970 CL |
327 | } |
328 | ||
1da177e4 | 329 | /* helper function to send static data that may not DMA-able */ |
86e07d34 | 330 | static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep, |
1da177e4 LT |
331 | const void *data, int len) |
332 | { | |
333 | int err; | |
52978be6 | 334 | void *buf = kmemdup(data, len, GFP_KERNEL); |
1da177e4 LT |
335 | if (!buf) |
336 | return -ENOMEM; | |
1da177e4 LT |
337 | dump_urb("sending", buf, len); |
338 | err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len, | |
339 | NULL, 250); | |
340 | kfree(buf); | |
341 | return err; | |
342 | } | |
343 | ||
344 | /* | |
345 | * Standard USB MIDI protocol: see the spec. | |
346 | * Midiman protocol: like the standard protocol, but the control byte is the | |
347 | * fourth byte in each packet, and uses length instead of CIN. | |
348 | */ | |
349 | ||
86e07d34 | 350 | static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep, |
1da177e4 LT |
351 | uint8_t* buffer, int buffer_length) |
352 | { | |
353 | int i; | |
354 | ||
355 | for (i = 0; i + 3 < buffer_length; i += 4) | |
356 | if (buffer[i] != 0) { | |
357 | int cable = buffer[i] >> 4; | |
358 | int length = snd_usbmidi_cin_length[buffer[i] & 0x0f]; | |
359 | snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); | |
360 | } | |
361 | } | |
362 | ||
86e07d34 | 363 | static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep, |
1da177e4 LT |
364 | uint8_t* buffer, int buffer_length) |
365 | { | |
366 | int i; | |
367 | ||
368 | for (i = 0; i + 3 < buffer_length; i += 4) | |
369 | if (buffer[i + 3] != 0) { | |
370 | int port = buffer[i + 3] >> 4; | |
371 | int length = buffer[i + 3] & 3; | |
372 | snd_usbmidi_input_data(ep, port, &buffer[i], length); | |
373 | } | |
374 | } | |
375 | ||
d05cc104 CL |
376 | /* |
377 | * Buggy M-Audio device: running status on input results in a packet that has | |
378 | * the data bytes but not the status byte and that is marked with CIN 4. | |
379 | */ | |
380 | static void snd_usbmidi_maudio_broken_running_status_input( | |
381 | struct snd_usb_midi_in_endpoint* ep, | |
382 | uint8_t* buffer, int buffer_length) | |
383 | { | |
384 | int i; | |
385 | ||
386 | for (i = 0; i + 3 < buffer_length; i += 4) | |
387 | if (buffer[i] != 0) { | |
388 | int cable = buffer[i] >> 4; | |
389 | u8 cin = buffer[i] & 0x0f; | |
390 | struct usbmidi_in_port *port = &ep->ports[cable]; | |
391 | int length; | |
392 | ||
393 | length = snd_usbmidi_cin_length[cin]; | |
394 | if (cin == 0xf && buffer[i + 1] >= 0xf8) | |
395 | ; /* realtime msg: no running status change */ | |
396 | else if (cin >= 0x8 && cin <= 0xe) | |
397 | /* channel msg */ | |
398 | port->running_status_length = length - 1; | |
399 | else if (cin == 0x4 && | |
400 | port->running_status_length != 0 && | |
401 | buffer[i + 1] < 0x80) | |
402 | /* CIN 4 that is not a SysEx */ | |
403 | length = port->running_status_length; | |
404 | else | |
405 | /* | |
406 | * All other msgs cannot begin running status. | |
407 | * (A channel msg sent as two or three CIN 0xF | |
408 | * packets could in theory, but this device | |
409 | * doesn't use this format.) | |
410 | */ | |
411 | port->running_status_length = 0; | |
412 | snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); | |
413 | } | |
414 | } | |
415 | ||
61870aed CL |
416 | /* |
417 | * CME protocol: like the standard protocol, but SysEx commands are sent as a | |
418 | * single USB packet preceded by a 0x0F byte. | |
419 | */ | |
420 | static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep, | |
421 | uint8_t *buffer, int buffer_length) | |
422 | { | |
423 | if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f) | |
424 | snd_usbmidi_standard_input(ep, buffer, buffer_length); | |
425 | else | |
426 | snd_usbmidi_input_data(ep, buffer[0] >> 4, | |
427 | &buffer[1], buffer_length - 1); | |
428 | } | |
429 | ||
1da177e4 LT |
430 | /* |
431 | * Adds one USB MIDI packet to the output buffer. | |
432 | */ | |
433 | static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0, | |
434 | uint8_t p1, uint8_t p2, uint8_t p3) | |
435 | { | |
436 | ||
437 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; | |
438 | buf[0] = p0; | |
439 | buf[1] = p1; | |
440 | buf[2] = p2; | |
441 | buf[3] = p3; | |
442 | urb->transfer_buffer_length += 4; | |
443 | } | |
444 | ||
445 | /* | |
446 | * Adds one Midiman packet to the output buffer. | |
447 | */ | |
448 | static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0, | |
449 | uint8_t p1, uint8_t p2, uint8_t p3) | |
450 | { | |
451 | ||
452 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; | |
453 | buf[0] = p1; | |
454 | buf[1] = p2; | |
455 | buf[2] = p3; | |
456 | buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f]; | |
457 | urb->transfer_buffer_length += 4; | |
458 | } | |
459 | ||
460 | /* | |
461 | * Converts MIDI commands to USB MIDI packets. | |
462 | */ | |
86e07d34 | 463 | static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port, |
1da177e4 LT |
464 | uint8_t b, struct urb* urb) |
465 | { | |
466 | uint8_t p0 = port->cable; | |
467 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) = | |
468 | port->ep->umidi->usb_protocol_ops->output_packet; | |
469 | ||
470 | if (b >= 0xf8) { | |
471 | output_packet(urb, p0 | 0x0f, b, 0, 0); | |
472 | } else if (b >= 0xf0) { | |
473 | switch (b) { | |
474 | case 0xf0: | |
475 | port->data[0] = b; | |
476 | port->state = STATE_SYSEX_1; | |
477 | break; | |
478 | case 0xf1: | |
479 | case 0xf3: | |
480 | port->data[0] = b; | |
481 | port->state = STATE_1PARAM; | |
482 | break; | |
483 | case 0xf2: | |
484 | port->data[0] = b; | |
485 | port->state = STATE_2PARAM_1; | |
486 | break; | |
487 | case 0xf4: | |
488 | case 0xf5: | |
489 | port->state = STATE_UNKNOWN; | |
490 | break; | |
491 | case 0xf6: | |
492 | output_packet(urb, p0 | 0x05, 0xf6, 0, 0); | |
493 | port->state = STATE_UNKNOWN; | |
494 | break; | |
495 | case 0xf7: | |
496 | switch (port->state) { | |
497 | case STATE_SYSEX_0: | |
498 | output_packet(urb, p0 | 0x05, 0xf7, 0, 0); | |
499 | break; | |
500 | case STATE_SYSEX_1: | |
501 | output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0); | |
502 | break; | |
503 | case STATE_SYSEX_2: | |
504 | output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7); | |
505 | break; | |
506 | } | |
507 | port->state = STATE_UNKNOWN; | |
508 | break; | |
509 | } | |
510 | } else if (b >= 0x80) { | |
511 | port->data[0] = b; | |
512 | if (b >= 0xc0 && b <= 0xdf) | |
513 | port->state = STATE_1PARAM; | |
514 | else | |
515 | port->state = STATE_2PARAM_1; | |
516 | } else { /* b < 0x80 */ | |
517 | switch (port->state) { | |
518 | case STATE_1PARAM: | |
519 | if (port->data[0] < 0xf0) { | |
520 | p0 |= port->data[0] >> 4; | |
521 | } else { | |
522 | p0 |= 0x02; | |
523 | port->state = STATE_UNKNOWN; | |
524 | } | |
525 | output_packet(urb, p0, port->data[0], b, 0); | |
526 | break; | |
527 | case STATE_2PARAM_1: | |
528 | port->data[1] = b; | |
529 | port->state = STATE_2PARAM_2; | |
530 | break; | |
531 | case STATE_2PARAM_2: | |
532 | if (port->data[0] < 0xf0) { | |
533 | p0 |= port->data[0] >> 4; | |
534 | port->state = STATE_2PARAM_1; | |
535 | } else { | |
536 | p0 |= 0x03; | |
537 | port->state = STATE_UNKNOWN; | |
538 | } | |
539 | output_packet(urb, p0, port->data[0], port->data[1], b); | |
540 | break; | |
541 | case STATE_SYSEX_0: | |
542 | port->data[0] = b; | |
543 | port->state = STATE_SYSEX_1; | |
544 | break; | |
545 | case STATE_SYSEX_1: | |
546 | port->data[1] = b; | |
547 | port->state = STATE_SYSEX_2; | |
548 | break; | |
549 | case STATE_SYSEX_2: | |
550 | output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b); | |
551 | port->state = STATE_SYSEX_0; | |
552 | break; | |
553 | } | |
554 | } | |
555 | } | |
556 | ||
86e07d34 | 557 | static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
558 | { |
559 | struct urb* urb = ep->urb; | |
560 | int p; | |
561 | ||
562 | /* FIXME: lower-numbered ports can starve higher-numbered ports */ | |
563 | for (p = 0; p < 0x10; ++p) { | |
86e07d34 | 564 | struct usbmidi_out_port* port = &ep->ports[p]; |
1da177e4 LT |
565 | if (!port->active) |
566 | continue; | |
567 | while (urb->transfer_buffer_length + 3 < ep->max_transfer) { | |
568 | uint8_t b; | |
569 | if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) { | |
570 | port->active = 0; | |
571 | break; | |
572 | } | |
573 | snd_usbmidi_transmit_byte(port, b, urb); | |
574 | } | |
575 | } | |
576 | } | |
577 | ||
578 | static struct usb_protocol_ops snd_usbmidi_standard_ops = { | |
579 | .input = snd_usbmidi_standard_input, | |
580 | .output = snd_usbmidi_standard_output, | |
581 | .output_packet = snd_usbmidi_output_standard_packet, | |
582 | }; | |
583 | ||
584 | static struct usb_protocol_ops snd_usbmidi_midiman_ops = { | |
585 | .input = snd_usbmidi_midiman_input, | |
586 | .output = snd_usbmidi_standard_output, | |
587 | .output_packet = snd_usbmidi_output_midiman_packet, | |
588 | }; | |
589 | ||
d05cc104 CL |
590 | static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = { |
591 | .input = snd_usbmidi_maudio_broken_running_status_input, | |
592 | .output = snd_usbmidi_standard_output, | |
593 | .output_packet = snd_usbmidi_output_standard_packet, | |
594 | }; | |
595 | ||
61870aed CL |
596 | static struct usb_protocol_ops snd_usbmidi_cme_ops = { |
597 | .input = snd_usbmidi_cme_input, | |
598 | .output = snd_usbmidi_standard_output, | |
599 | .output_packet = snd_usbmidi_output_standard_packet, | |
600 | }; | |
601 | ||
1da177e4 LT |
602 | /* |
603 | * Novation USB MIDI protocol: number of data bytes is in the first byte | |
604 | * (when receiving) (+1!) or in the second byte (when sending); data begins | |
605 | * at the third byte. | |
606 | */ | |
607 | ||
86e07d34 | 608 | static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep, |
1da177e4 LT |
609 | uint8_t* buffer, int buffer_length) |
610 | { | |
611 | if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1) | |
612 | return; | |
613 | snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1); | |
614 | } | |
615 | ||
86e07d34 | 616 | static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
617 | { |
618 | uint8_t* transfer_buffer; | |
619 | int count; | |
620 | ||
621 | if (!ep->ports[0].active) | |
622 | return; | |
623 | transfer_buffer = ep->urb->transfer_buffer; | |
624 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
625 | &transfer_buffer[2], | |
626 | ep->max_transfer - 2); | |
627 | if (count < 1) { | |
628 | ep->ports[0].active = 0; | |
629 | return; | |
630 | } | |
631 | transfer_buffer[0] = 0; | |
632 | transfer_buffer[1] = count; | |
633 | ep->urb->transfer_buffer_length = 2 + count; | |
634 | } | |
635 | ||
636 | static struct usb_protocol_ops snd_usbmidi_novation_ops = { | |
637 | .input = snd_usbmidi_novation_input, | |
638 | .output = snd_usbmidi_novation_output, | |
639 | }; | |
640 | ||
641 | /* | |
6155aff8 | 642 | * "raw" protocol: used by the MOTU FastLane. |
1da177e4 LT |
643 | */ |
644 | ||
86e07d34 | 645 | static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep, |
6155aff8 | 646 | uint8_t* buffer, int buffer_length) |
1da177e4 LT |
647 | { |
648 | snd_usbmidi_input_data(ep, 0, buffer, buffer_length); | |
649 | } | |
650 | ||
86e07d34 | 651 | static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
652 | { |
653 | int count; | |
654 | ||
655 | if (!ep->ports[0].active) | |
656 | return; | |
657 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
658 | ep->urb->transfer_buffer, | |
659 | ep->max_transfer); | |
660 | if (count < 1) { | |
661 | ep->ports[0].active = 0; | |
662 | return; | |
663 | } | |
664 | ep->urb->transfer_buffer_length = count; | |
665 | } | |
666 | ||
6155aff8 CL |
667 | static struct usb_protocol_ops snd_usbmidi_raw_ops = { |
668 | .input = snd_usbmidi_raw_input, | |
669 | .output = snd_usbmidi_raw_output, | |
1da177e4 LT |
670 | }; |
671 | ||
030a07e4 KW |
672 | static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep, |
673 | uint8_t *buffer, int buffer_length) | |
674 | { | |
675 | if (buffer_length != 9) | |
676 | return; | |
677 | buffer_length = 8; | |
678 | while (buffer_length && buffer[buffer_length - 1] == 0xFD) | |
679 | buffer_length--; | |
680 | if (buffer_length) | |
681 | snd_usbmidi_input_data(ep, 0, buffer, buffer_length); | |
682 | } | |
683 | ||
684 | static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep) | |
685 | { | |
686 | int count; | |
687 | ||
688 | if (!ep->ports[0].active) | |
689 | return; | |
690 | count = ep->urb->dev->speed == USB_SPEED_HIGH ? 1 : 2; | |
691 | count = snd_rawmidi_transmit(ep->ports[0].substream, | |
692 | ep->urb->transfer_buffer, | |
693 | count); | |
694 | if (count < 1) { | |
695 | ep->ports[0].active = 0; | |
696 | return; | |
697 | } | |
698 | ||
699 | memset(ep->urb->transfer_buffer + count, 0xFD, 9 - count); | |
700 | ep->urb->transfer_buffer_length = count; | |
701 | } | |
702 | ||
703 | static struct usb_protocol_ops snd_usbmidi_122l_ops = { | |
704 | .input = snd_usbmidi_us122l_input, | |
705 | .output = snd_usbmidi_us122l_output, | |
706 | }; | |
707 | ||
1da177e4 LT |
708 | /* |
709 | * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching. | |
710 | */ | |
711 | ||
86e07d34 | 712 | static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
713 | { |
714 | static const u8 init_data[] = { | |
715 | /* initialization magic: "get version" */ | |
716 | 0xf0, | |
717 | 0x00, 0x20, 0x31, /* Emagic */ | |
718 | 0x64, /* Unitor8 */ | |
719 | 0x0b, /* version number request */ | |
720 | 0x00, /* command version */ | |
721 | 0x00, /* EEPROM, box 0 */ | |
722 | 0xf7 | |
723 | }; | |
724 | send_bulk_static_data(ep, init_data, sizeof(init_data)); | |
725 | /* while we're at it, pour on more magic */ | |
726 | send_bulk_static_data(ep, init_data, sizeof(init_data)); | |
727 | } | |
728 | ||
86e07d34 | 729 | static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
730 | { |
731 | static const u8 finish_data[] = { | |
732 | /* switch to patch mode with last preset */ | |
733 | 0xf0, | |
734 | 0x00, 0x20, 0x31, /* Emagic */ | |
735 | 0x64, /* Unitor8 */ | |
736 | 0x10, /* patch switch command */ | |
737 | 0x00, /* command version */ | |
738 | 0x7f, /* to all boxes */ | |
739 | 0x40, /* last preset in EEPROM */ | |
740 | 0xf7 | |
741 | }; | |
742 | send_bulk_static_data(ep, finish_data, sizeof(finish_data)); | |
743 | } | |
744 | ||
86e07d34 | 745 | static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep, |
1da177e4 LT |
746 | uint8_t* buffer, int buffer_length) |
747 | { | |
c347e9fc CL |
748 | int i; |
749 | ||
750 | /* FF indicates end of valid data */ | |
751 | for (i = 0; i < buffer_length; ++i) | |
752 | if (buffer[i] == 0xff) { | |
753 | buffer_length = i; | |
754 | break; | |
755 | } | |
1da177e4 LT |
756 | |
757 | /* handle F5 at end of last buffer */ | |
758 | if (ep->seen_f5) | |
759 | goto switch_port; | |
760 | ||
761 | while (buffer_length > 0) { | |
1da177e4 LT |
762 | /* determine size of data until next F5 */ |
763 | for (i = 0; i < buffer_length; ++i) | |
764 | if (buffer[i] == 0xf5) | |
765 | break; | |
766 | snd_usbmidi_input_data(ep, ep->current_port, buffer, i); | |
767 | buffer += i; | |
768 | buffer_length -= i; | |
769 | ||
770 | if (buffer_length <= 0) | |
771 | break; | |
772 | /* assert(buffer[0] == 0xf5); */ | |
773 | ep->seen_f5 = 1; | |
774 | ++buffer; | |
775 | --buffer_length; | |
776 | ||
777 | switch_port: | |
778 | if (buffer_length <= 0) | |
779 | break; | |
780 | if (buffer[0] < 0x80) { | |
781 | ep->current_port = (buffer[0] - 1) & 15; | |
782 | ++buffer; | |
783 | --buffer_length; | |
784 | } | |
785 | ep->seen_f5 = 0; | |
786 | } | |
787 | } | |
788 | ||
86e07d34 | 789 | static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 LT |
790 | { |
791 | int port0 = ep->current_port; | |
792 | uint8_t* buf = ep->urb->transfer_buffer; | |
793 | int buf_free = ep->max_transfer; | |
794 | int length, i; | |
795 | ||
796 | for (i = 0; i < 0x10; ++i) { | |
797 | /* round-robin, starting at the last current port */ | |
798 | int portnum = (port0 + i) & 15; | |
86e07d34 | 799 | struct usbmidi_out_port* port = &ep->ports[portnum]; |
1da177e4 LT |
800 | |
801 | if (!port->active) | |
802 | continue; | |
803 | if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) { | |
804 | port->active = 0; | |
805 | continue; | |
806 | } | |
807 | ||
808 | if (portnum != ep->current_port) { | |
809 | if (buf_free < 2) | |
810 | break; | |
811 | ep->current_port = portnum; | |
812 | buf[0] = 0xf5; | |
813 | buf[1] = (portnum + 1) & 15; | |
814 | buf += 2; | |
815 | buf_free -= 2; | |
816 | } | |
817 | ||
818 | if (buf_free < 1) | |
819 | break; | |
820 | length = snd_rawmidi_transmit(port->substream, buf, buf_free); | |
821 | if (length > 0) { | |
822 | buf += length; | |
823 | buf_free -= length; | |
824 | if (buf_free < 1) | |
825 | break; | |
826 | } | |
827 | } | |
c347e9fc CL |
828 | if (buf_free < ep->max_transfer && buf_free > 0) { |
829 | *buf = 0xff; | |
830 | --buf_free; | |
831 | } | |
1da177e4 LT |
832 | ep->urb->transfer_buffer_length = ep->max_transfer - buf_free; |
833 | } | |
834 | ||
835 | static struct usb_protocol_ops snd_usbmidi_emagic_ops = { | |
836 | .input = snd_usbmidi_emagic_input, | |
837 | .output = snd_usbmidi_emagic_output, | |
838 | .init_out_endpoint = snd_usbmidi_emagic_init_out, | |
839 | .finish_out_endpoint = snd_usbmidi_emagic_finish_out, | |
840 | }; | |
841 | ||
842 | ||
86e07d34 | 843 | static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream) |
1da177e4 | 844 | { |
86e07d34 TI |
845 | struct snd_usb_midi* umidi = substream->rmidi->private_data; |
846 | struct usbmidi_out_port* port = NULL; | |
1da177e4 LT |
847 | int i, j; |
848 | ||
849 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
850 | if (umidi->endpoints[i].out) | |
851 | for (j = 0; j < 0x10; ++j) | |
852 | if (umidi->endpoints[i].out->ports[j].substream == substream) { | |
853 | port = &umidi->endpoints[i].out->ports[j]; | |
854 | break; | |
855 | } | |
856 | if (!port) { | |
857 | snd_BUG(); | |
858 | return -ENXIO; | |
859 | } | |
860 | substream->runtime->private_data = port; | |
861 | port->state = STATE_UNKNOWN; | |
862 | return 0; | |
863 | } | |
864 | ||
86e07d34 | 865 | static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
866 | { |
867 | return 0; | |
868 | } | |
869 | ||
86e07d34 | 870 | static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up) |
1da177e4 | 871 | { |
86e07d34 | 872 | struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data; |
1da177e4 LT |
873 | |
874 | port->active = up; | |
875 | if (up) { | |
876 | if (port->ep->umidi->chip->shutdown) { | |
877 | /* gobble up remaining bytes to prevent wait in | |
878 | * snd_rawmidi_drain_output */ | |
879 | while (!snd_rawmidi_transmit_empty(substream)) | |
880 | snd_rawmidi_transmit_ack(substream, 1); | |
881 | return; | |
882 | } | |
883 | tasklet_hi_schedule(&port->ep->tasklet); | |
884 | } | |
885 | } | |
886 | ||
86e07d34 | 887 | static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
888 | { |
889 | return 0; | |
890 | } | |
891 | ||
86e07d34 | 892 | static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream) |
1da177e4 LT |
893 | { |
894 | return 0; | |
895 | } | |
896 | ||
86e07d34 | 897 | static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up) |
1da177e4 | 898 | { |
86e07d34 | 899 | struct snd_usb_midi* umidi = substream->rmidi->private_data; |
1da177e4 LT |
900 | |
901 | if (up) | |
902 | set_bit(substream->number, &umidi->input_triggered); | |
903 | else | |
904 | clear_bit(substream->number, &umidi->input_triggered); | |
905 | } | |
906 | ||
86e07d34 | 907 | static struct snd_rawmidi_ops snd_usbmidi_output_ops = { |
1da177e4 LT |
908 | .open = snd_usbmidi_output_open, |
909 | .close = snd_usbmidi_output_close, | |
910 | .trigger = snd_usbmidi_output_trigger, | |
911 | }; | |
912 | ||
86e07d34 | 913 | static struct snd_rawmidi_ops snd_usbmidi_input_ops = { |
1da177e4 LT |
914 | .open = snd_usbmidi_input_open, |
915 | .close = snd_usbmidi_input_close, | |
916 | .trigger = snd_usbmidi_input_trigger | |
917 | }; | |
918 | ||
919 | /* | |
920 | * Frees an input endpoint. | |
921 | * May be called when ep hasn't been initialized completely. | |
922 | */ | |
86e07d34 | 923 | static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep) |
1da177e4 LT |
924 | { |
925 | if (ep->urb) { | |
55851f73 CL |
926 | usb_buffer_free(ep->umidi->chip->dev, |
927 | ep->urb->transfer_buffer_length, | |
928 | ep->urb->transfer_buffer, | |
929 | ep->urb->transfer_dma); | |
1da177e4 LT |
930 | usb_free_urb(ep->urb); |
931 | } | |
932 | kfree(ep); | |
933 | } | |
934 | ||
935 | /* | |
936 | * Creates an input endpoint. | |
937 | */ | |
86e07d34 TI |
938 | static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, |
939 | struct snd_usb_midi_endpoint_info* ep_info, | |
940 | struct snd_usb_midi_endpoint* rep) | |
1da177e4 | 941 | { |
86e07d34 | 942 | struct snd_usb_midi_in_endpoint* ep; |
1da177e4 LT |
943 | void* buffer; |
944 | unsigned int pipe; | |
945 | int length; | |
946 | ||
947 | rep->in = NULL; | |
561b220a | 948 | ep = kzalloc(sizeof(*ep), GFP_KERNEL); |
1da177e4 LT |
949 | if (!ep) |
950 | return -ENOMEM; | |
951 | ep->umidi = umidi; | |
952 | ||
953 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); | |
954 | if (!ep->urb) { | |
955 | snd_usbmidi_in_endpoint_delete(ep); | |
956 | return -ENOMEM; | |
957 | } | |
958 | if (ep_info->in_interval) | |
959 | pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep); | |
960 | else | |
961 | pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep); | |
962 | length = usb_maxpacket(umidi->chip->dev, pipe, 0); | |
55851f73 CL |
963 | buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL, |
964 | &ep->urb->transfer_dma); | |
1da177e4 LT |
965 | if (!buffer) { |
966 | snd_usbmidi_in_endpoint_delete(ep); | |
967 | return -ENOMEM; | |
968 | } | |
969 | if (ep_info->in_interval) | |
3527a008 CL |
970 | usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, |
971 | length, snd_usbmidi_in_urb_complete, ep, | |
972 | ep_info->in_interval); | |
1da177e4 | 973 | else |
3527a008 CL |
974 | usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, |
975 | length, snd_usbmidi_in_urb_complete, ep); | |
55851f73 | 976 | ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1da177e4 LT |
977 | |
978 | rep->in = ep; | |
979 | return 0; | |
980 | } | |
981 | ||
982 | static unsigned int snd_usbmidi_count_bits(unsigned int x) | |
983 | { | |
62f09c3d | 984 | unsigned int bits; |
1da177e4 | 985 | |
62f09c3d CL |
986 | for (bits = 0; x; ++bits) |
987 | x &= x - 1; | |
1da177e4 LT |
988 | return bits; |
989 | } | |
990 | ||
991 | /* | |
992 | * Frees an output endpoint. | |
993 | * May be called when ep hasn't been initialized completely. | |
994 | */ | |
86e07d34 | 995 | static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint* ep) |
1da177e4 | 996 | { |
1da177e4 | 997 | if (ep->urb) { |
55851f73 CL |
998 | usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer, |
999 | ep->urb->transfer_buffer, | |
1000 | ep->urb->transfer_dma); | |
1da177e4 LT |
1001 | usb_free_urb(ep->urb); |
1002 | } | |
1003 | kfree(ep); | |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * Creates an output endpoint, and initializes output ports. | |
1008 | */ | |
86e07d34 TI |
1009 | static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi, |
1010 | struct snd_usb_midi_endpoint_info* ep_info, | |
1011 | struct snd_usb_midi_endpoint* rep) | |
1da177e4 | 1012 | { |
86e07d34 | 1013 | struct snd_usb_midi_out_endpoint* ep; |
1da177e4 LT |
1014 | int i; |
1015 | unsigned int pipe; | |
1016 | void* buffer; | |
1017 | ||
1018 | rep->out = NULL; | |
561b220a | 1019 | ep = kzalloc(sizeof(*ep), GFP_KERNEL); |
1da177e4 LT |
1020 | if (!ep) |
1021 | return -ENOMEM; | |
1022 | ep->umidi = umidi; | |
1023 | ||
1024 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); | |
1025 | if (!ep->urb) { | |
1026 | snd_usbmidi_out_endpoint_delete(ep); | |
1027 | return -ENOMEM; | |
1028 | } | |
a6a712ae CL |
1029 | if (ep_info->out_interval) |
1030 | pipe = usb_sndintpipe(umidi->chip->dev, ep_info->out_ep); | |
1031 | else | |
1032 | pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep); | |
490cbd92 CL |
1033 | if (umidi->chip->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */ |
1034 | /* FIXME: we need more URBs to get reasonable bandwidth here: */ | |
1035 | ep->max_transfer = 4; | |
1036 | else | |
1037 | ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1); | |
55851f73 CL |
1038 | buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer, |
1039 | GFP_KERNEL, &ep->urb->transfer_dma); | |
1da177e4 LT |
1040 | if (!buffer) { |
1041 | snd_usbmidi_out_endpoint_delete(ep); | |
1042 | return -ENOMEM; | |
1043 | } | |
a6a712ae CL |
1044 | if (ep_info->out_interval) |
1045 | usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, | |
1046 | ep->max_transfer, snd_usbmidi_out_urb_complete, | |
1047 | ep, ep_info->out_interval); | |
1048 | else | |
1049 | usb_fill_bulk_urb(ep->urb, umidi->chip->dev, | |
1050 | pipe, buffer, ep->max_transfer, | |
1051 | snd_usbmidi_out_urb_complete, ep); | |
55851f73 | 1052 | ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1da177e4 LT |
1053 | |
1054 | spin_lock_init(&ep->buffer_lock); | |
1055 | tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep); | |
1056 | ||
1057 | for (i = 0; i < 0x10; ++i) | |
1058 | if (ep_info->out_cables & (1 << i)) { | |
1059 | ep->ports[i].ep = ep; | |
1060 | ep->ports[i].cable = i << 4; | |
1061 | } | |
1062 | ||
1063 | if (umidi->usb_protocol_ops->init_out_endpoint) | |
1064 | umidi->usb_protocol_ops->init_out_endpoint(ep); | |
1065 | ||
1066 | rep->out = ep; | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | /* | |
1071 | * Frees everything. | |
1072 | */ | |
86e07d34 | 1073 | static void snd_usbmidi_free(struct snd_usb_midi* umidi) |
1da177e4 LT |
1074 | { |
1075 | int i; | |
1076 | ||
1077 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
86e07d34 | 1078 | struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; |
1da177e4 LT |
1079 | if (ep->out) |
1080 | snd_usbmidi_out_endpoint_delete(ep->out); | |
1081 | if (ep->in) | |
1082 | snd_usbmidi_in_endpoint_delete(ep->in); | |
1083 | } | |
1084 | kfree(umidi); | |
1085 | } | |
1086 | ||
1087 | /* | |
1088 | * Unlinks all URBs (must be done before the usb_device is deleted). | |
1089 | */ | |
ee733397 | 1090 | void snd_usbmidi_disconnect(struct list_head* p) |
1da177e4 | 1091 | { |
86e07d34 | 1092 | struct snd_usb_midi* umidi; |
1da177e4 LT |
1093 | int i; |
1094 | ||
86e07d34 | 1095 | umidi = list_entry(p, struct snd_usb_midi, list); |
c0792e00 TI |
1096 | /* |
1097 | * an URB's completion handler may start the timer and | |
1098 | * a timer may submit an URB. To reliably break the cycle | |
1099 | * a flag under lock must be used | |
1100 | */ | |
1101 | spin_lock_irq(&umidi->disc_lock); | |
1102 | umidi->disconnected = 1; | |
1103 | spin_unlock_irq(&umidi->disc_lock); | |
1da177e4 | 1104 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
86e07d34 | 1105 | struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; |
c8846970 CL |
1106 | if (ep->out) |
1107 | tasklet_kill(&ep->out->tasklet); | |
1da177e4 LT |
1108 | if (ep->out && ep->out->urb) { |
1109 | usb_kill_urb(ep->out->urb); | |
1110 | if (umidi->usb_protocol_ops->finish_out_endpoint) | |
1111 | umidi->usb_protocol_ops->finish_out_endpoint(ep->out); | |
1112 | } | |
f5e135af | 1113 | if (ep->in) |
1da177e4 | 1114 | usb_kill_urb(ep->in->urb); |
7a17daae TI |
1115 | /* free endpoints here; later call can result in Oops */ |
1116 | if (ep->out) { | |
1117 | snd_usbmidi_out_endpoint_delete(ep->out); | |
1118 | ep->out = NULL; | |
1119 | } | |
1120 | if (ep->in) { | |
1121 | snd_usbmidi_in_endpoint_delete(ep->in); | |
1122 | ep->in = NULL; | |
1123 | } | |
1da177e4 | 1124 | } |
c0792e00 | 1125 | del_timer_sync(&umidi->error_timer); |
1da177e4 LT |
1126 | } |
1127 | ||
86e07d34 | 1128 | static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi) |
1da177e4 | 1129 | { |
86e07d34 | 1130 | struct snd_usb_midi* umidi = rmidi->private_data; |
1da177e4 LT |
1131 | snd_usbmidi_free(umidi); |
1132 | } | |
1133 | ||
86e07d34 | 1134 | static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi, |
1da177e4 LT |
1135 | int stream, int number) |
1136 | { | |
1137 | struct list_head* list; | |
1138 | ||
1139 | list_for_each(list, &umidi->rmidi->streams[stream].substreams) { | |
86e07d34 | 1140 | struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list); |
1da177e4 LT |
1141 | if (substream->number == number) |
1142 | return substream; | |
1143 | } | |
1144 | return NULL; | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | * This list specifies names for ports that do not fit into the standard | |
1149 | * "(product) MIDI (n)" schema because they aren't external MIDI ports, | |
1150 | * such as internal control or synthesizer ports. | |
1151 | */ | |
a7b928ac | 1152 | static struct port_info { |
27d10f56 | 1153 | u32 id; |
a7b928ac CL |
1154 | short int port; |
1155 | short int voices; | |
1156 | const char *name; | |
1157 | unsigned int seq_flags; | |
1158 | } snd_usbmidi_port_info[] = { | |
1159 | #define PORT_INFO(vendor, product, num, name_, voices_, flags) \ | |
1160 | { .id = USB_ID(vendor, product), \ | |
1161 | .port = num, .voices = voices_, \ | |
1162 | .name = name_, .seq_flags = flags } | |
1163 | #define EXTERNAL_PORT(vendor, product, num, name) \ | |
1164 | PORT_INFO(vendor, product, num, name, 0, \ | |
1165 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ | |
1166 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ | |
1167 | SNDRV_SEQ_PORT_TYPE_PORT) | |
1168 | #define CONTROL_PORT(vendor, product, num, name) \ | |
1169 | PORT_INFO(vendor, product, num, name, 0, \ | |
1170 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ | |
1171 | SNDRV_SEQ_PORT_TYPE_HARDWARE) | |
1172 | #define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \ | |
1173 | PORT_INFO(vendor, product, num, name, voices, \ | |
1174 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ | |
1175 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ | |
1176 | SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \ | |
1177 | SNDRV_SEQ_PORT_TYPE_MIDI_GS | \ | |
1178 | SNDRV_SEQ_PORT_TYPE_MIDI_XG | \ | |
1179 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ | |
1180 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) | |
1181 | #define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \ | |
1182 | PORT_INFO(vendor, product, num, name, voices, \ | |
1183 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ | |
1184 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ | |
1185 | SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \ | |
1186 | SNDRV_SEQ_PORT_TYPE_MIDI_GS | \ | |
1187 | SNDRV_SEQ_PORT_TYPE_MIDI_XG | \ | |
1188 | SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \ | |
1189 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ | |
1190 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) | |
1da177e4 | 1191 | /* Roland UA-100 */ |
a7b928ac | 1192 | CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"), |
1da177e4 | 1193 | /* Roland SC-8850 */ |
a7b928ac CL |
1194 | SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128), |
1195 | SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128), | |
1196 | SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128), | |
1197 | SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128), | |
1198 | EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"), | |
1199 | EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"), | |
1da177e4 | 1200 | /* Roland U-8 */ |
a7b928ac CL |
1201 | EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"), |
1202 | CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"), | |
1da177e4 | 1203 | /* Roland SC-8820 */ |
a7b928ac CL |
1204 | SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64), |
1205 | SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64), | |
1206 | EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"), | |
1da177e4 | 1207 | /* Roland SK-500 */ |
a7b928ac CL |
1208 | SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64), |
1209 | SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64), | |
1210 | EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"), | |
1da177e4 | 1211 | /* Roland SC-D70 */ |
a7b928ac CL |
1212 | SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64), |
1213 | SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64), | |
1214 | EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"), | |
1da177e4 | 1215 | /* Edirol UM-880 */ |
a7b928ac | 1216 | CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"), |
1da177e4 | 1217 | /* Edirol SD-90 */ |
a7b928ac CL |
1218 | ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128), |
1219 | ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128), | |
1220 | EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"), | |
1221 | EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"), | |
1da177e4 | 1222 | /* Edirol UM-550 */ |
a7b928ac | 1223 | CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"), |
1da177e4 | 1224 | /* Edirol SD-20 */ |
a7b928ac CL |
1225 | ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64), |
1226 | ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64), | |
1227 | EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"), | |
1da177e4 | 1228 | /* Edirol SD-80 */ |
a7b928ac CL |
1229 | ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128), |
1230 | ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128), | |
1231 | EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"), | |
1232 | EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"), | |
1da177e4 | 1233 | /* Edirol UA-700 */ |
a7b928ac CL |
1234 | EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"), |
1235 | CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"), | |
1da177e4 | 1236 | /* Roland VariOS */ |
a7b928ac CL |
1237 | EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"), |
1238 | EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"), | |
1239 | EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"), | |
1da177e4 | 1240 | /* Edirol PCR */ |
a7b928ac CL |
1241 | EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"), |
1242 | EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"), | |
1243 | EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"), | |
1da177e4 | 1244 | /* BOSS GS-10 */ |
a7b928ac CL |
1245 | EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"), |
1246 | CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"), | |
1da177e4 | 1247 | /* Edirol UA-1000 */ |
a7b928ac CL |
1248 | EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"), |
1249 | CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"), | |
1da177e4 | 1250 | /* Edirol UR-80 */ |
a7b928ac CL |
1251 | EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"), |
1252 | EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"), | |
1253 | EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"), | |
1da177e4 | 1254 | /* Edirol PCR-A */ |
a7b928ac CL |
1255 | EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"), |
1256 | EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"), | |
1257 | EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"), | |
7c79b768 | 1258 | /* Edirol UM-3EX */ |
a7b928ac | 1259 | CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"), |
1da177e4 | 1260 | /* M-Audio MidiSport 8x8 */ |
a7b928ac CL |
1261 | CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"), |
1262 | CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"), | |
1da177e4 | 1263 | /* MOTU Fastlane */ |
a7b928ac CL |
1264 | EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"), |
1265 | EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"), | |
1da177e4 | 1266 | /* Emagic Unitor8/AMT8/MT4 */ |
a7b928ac CL |
1267 | EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"), |
1268 | EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"), | |
1269 | EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"), | |
1da177e4 LT |
1270 | }; |
1271 | ||
a7b928ac CL |
1272 | static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number) |
1273 | { | |
1274 | int i; | |
1275 | ||
1276 | for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) { | |
1277 | if (snd_usbmidi_port_info[i].id == umidi->chip->usb_id && | |
1278 | snd_usbmidi_port_info[i].port == number) | |
1279 | return &snd_usbmidi_port_info[i]; | |
1280 | } | |
1281 | return NULL; | |
1282 | } | |
1283 | ||
1284 | static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number, | |
1285 | struct snd_seq_port_info *seq_port_info) | |
1286 | { | |
1287 | struct snd_usb_midi *umidi = rmidi->private_data; | |
1288 | struct port_info *port_info; | |
1289 | ||
1290 | /* TODO: read port flags from descriptors */ | |
1291 | port_info = find_port_info(umidi, number); | |
1292 | if (port_info) { | |
1293 | seq_port_info->type = port_info->seq_flags; | |
1294 | seq_port_info->midi_voices = port_info->voices; | |
1295 | } | |
1296 | } | |
1297 | ||
86e07d34 | 1298 | static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi, |
1da177e4 | 1299 | int stream, int number, |
86e07d34 | 1300 | struct snd_rawmidi_substream ** rsubstream) |
1da177e4 | 1301 | { |
a7b928ac | 1302 | struct port_info *port_info; |
1da177e4 LT |
1303 | const char *name_format; |
1304 | ||
86e07d34 | 1305 | struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number); |
1da177e4 LT |
1306 | if (!substream) { |
1307 | snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number); | |
1308 | return; | |
1309 | } | |
1310 | ||
1311 | /* TODO: read port name from jack descriptor */ | |
a7b928ac CL |
1312 | port_info = find_port_info(umidi, number); |
1313 | name_format = port_info ? port_info->name : "%s MIDI %d"; | |
1da177e4 LT |
1314 | snprintf(substream->name, sizeof(substream->name), |
1315 | name_format, umidi->chip->card->shortname, number + 1); | |
1316 | ||
1317 | *rsubstream = substream; | |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | * Creates the endpoints and their ports. | |
1322 | */ | |
86e07d34 TI |
1323 | static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi, |
1324 | struct snd_usb_midi_endpoint_info* endpoints) | |
1da177e4 LT |
1325 | { |
1326 | int i, j, err; | |
1327 | int out_ports = 0, in_ports = 0; | |
1328 | ||
1329 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1330 | if (endpoints[i].out_cables) { | |
1331 | err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i], | |
1332 | &umidi->endpoints[i]); | |
1333 | if (err < 0) | |
1334 | return err; | |
1335 | } | |
1336 | if (endpoints[i].in_cables) { | |
1337 | err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i], | |
1338 | &umidi->endpoints[i]); | |
1339 | if (err < 0) | |
1340 | return err; | |
1341 | } | |
1342 | ||
1343 | for (j = 0; j < 0x10; ++j) { | |
1344 | if (endpoints[i].out_cables & (1 << j)) { | |
1345 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports, | |
1346 | &umidi->endpoints[i].out->ports[j].substream); | |
1347 | ++out_ports; | |
1348 | } | |
1349 | if (endpoints[i].in_cables & (1 << j)) { | |
1350 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports, | |
1351 | &umidi->endpoints[i].in->ports[j].substream); | |
1352 | ++in_ports; | |
1353 | } | |
1354 | } | |
1355 | } | |
1356 | snd_printdd(KERN_INFO "created %d output and %d input ports\n", | |
1357 | out_ports, in_ports); | |
1358 | return 0; | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * Returns MIDIStreaming device capabilities. | |
1363 | */ | |
86e07d34 TI |
1364 | static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi, |
1365 | struct snd_usb_midi_endpoint_info* endpoints) | |
1da177e4 LT |
1366 | { |
1367 | struct usb_interface* intf; | |
1368 | struct usb_host_interface *hostif; | |
1369 | struct usb_interface_descriptor* intfd; | |
1370 | struct usb_ms_header_descriptor* ms_header; | |
1371 | struct usb_host_endpoint *hostep; | |
1372 | struct usb_endpoint_descriptor* ep; | |
1373 | struct usb_ms_endpoint_descriptor* ms_ep; | |
1374 | int i, epidx; | |
1375 | ||
1376 | intf = umidi->iface; | |
1377 | if (!intf) | |
1378 | return -ENXIO; | |
1379 | hostif = &intf->altsetting[0]; | |
1380 | intfd = get_iface_desc(hostif); | |
1381 | ms_header = (struct usb_ms_header_descriptor*)hostif->extra; | |
1382 | if (hostif->extralen >= 7 && | |
1383 | ms_header->bLength >= 7 && | |
1384 | ms_header->bDescriptorType == USB_DT_CS_INTERFACE && | |
1385 | ms_header->bDescriptorSubtype == HEADER) | |
1386 | snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n", | |
1387 | ms_header->bcdMSC[1], ms_header->bcdMSC[0]); | |
1388 | else | |
1389 | snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n"); | |
1390 | ||
1391 | epidx = 0; | |
1392 | for (i = 0; i < intfd->bNumEndpoints; ++i) { | |
1393 | hostep = &hostif->endpoint[i]; | |
1394 | ep = get_ep_desc(hostep); | |
1395 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK && | |
1396 | (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1397 | continue; | |
1398 | ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra; | |
1399 | if (hostep->extralen < 4 || | |
1400 | ms_ep->bLength < 4 || | |
1401 | ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT || | |
1402 | ms_ep->bDescriptorSubtype != MS_GENERAL) | |
1403 | continue; | |
1404 | if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
1405 | if (endpoints[epidx].out_ep) { | |
1406 | if (++epidx >= MIDI_MAX_ENDPOINTS) { | |
1407 | snd_printk(KERN_WARNING "too many endpoints\n"); | |
1408 | break; | |
1409 | } | |
1410 | } | |
1411 | endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1412 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1413 | endpoints[epidx].out_interval = ep->bInterval; | |
56162aab CL |
1414 | else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW) |
1415 | /* | |
1416 | * Low speed bulk transfers don't exist, so | |
1417 | * force interrupt transfers for devices like | |
1418 | * ESI MIDI Mate that try to use them anyway. | |
1419 | */ | |
1420 | endpoints[epidx].out_interval = 1; | |
1da177e4 LT |
1421 | endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; |
1422 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", | |
1423 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); | |
1424 | } else { | |
1425 | if (endpoints[epidx].in_ep) { | |
1426 | if (++epidx >= MIDI_MAX_ENDPOINTS) { | |
1427 | snd_printk(KERN_WARNING "too many endpoints\n"); | |
1428 | break; | |
1429 | } | |
1430 | } | |
1431 | endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1432 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1433 | endpoints[epidx].in_interval = ep->bInterval; | |
56162aab CL |
1434 | else if (snd_usb_get_speed(umidi->chip->dev) == USB_SPEED_LOW) |
1435 | endpoints[epidx].in_interval = 1; | |
1da177e4 LT |
1436 | endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; |
1437 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", | |
1438 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); | |
1439 | } | |
1440 | } | |
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | /* | |
1445 | * On Roland devices, use the second alternate setting to be able to use | |
1446 | * the interrupt input endpoint. | |
1447 | */ | |
86e07d34 | 1448 | static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi) |
1da177e4 LT |
1449 | { |
1450 | struct usb_interface* intf; | |
1451 | struct usb_host_interface *hostif; | |
1452 | struct usb_interface_descriptor* intfd; | |
1453 | ||
1454 | intf = umidi->iface; | |
1455 | if (!intf || intf->num_altsetting != 2) | |
1456 | return; | |
1457 | ||
1458 | hostif = &intf->altsetting[1]; | |
1459 | intfd = get_iface_desc(hostif); | |
1460 | if (intfd->bNumEndpoints != 2 || | |
1461 | (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK || | |
1462 | (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1463 | return; | |
1464 | ||
1465 | snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n", | |
1466 | intfd->bAlternateSetting); | |
1467 | usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber, | |
1468 | intfd->bAlternateSetting); | |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * Try to find any usable endpoints in the interface. | |
1473 | */ | |
86e07d34 TI |
1474 | static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi, |
1475 | struct snd_usb_midi_endpoint_info* endpoint, | |
1da177e4 LT |
1476 | int max_endpoints) |
1477 | { | |
1478 | struct usb_interface* intf; | |
1479 | struct usb_host_interface *hostif; | |
1480 | struct usb_interface_descriptor* intfd; | |
1481 | struct usb_endpoint_descriptor* epd; | |
1482 | int i, out_eps = 0, in_eps = 0; | |
1483 | ||
27d10f56 | 1484 | if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582) |
1da177e4 LT |
1485 | snd_usbmidi_switch_roland_altsetting(umidi); |
1486 | ||
c1ab5d59 CL |
1487 | if (endpoint[0].out_ep || endpoint[0].in_ep) |
1488 | return 0; | |
1489 | ||
1da177e4 LT |
1490 | intf = umidi->iface; |
1491 | if (!intf || intf->num_altsetting < 1) | |
1492 | return -ENOENT; | |
1493 | hostif = intf->cur_altsetting; | |
1494 | intfd = get_iface_desc(hostif); | |
1495 | ||
1496 | for (i = 0; i < intfd->bNumEndpoints; ++i) { | |
1497 | epd = get_endpoint(hostif, i); | |
1498 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK && | |
1499 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) | |
1500 | continue; | |
1501 | if (out_eps < max_endpoints && | |
1502 | (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
1503 | endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1504 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1505 | endpoint[out_eps].out_interval = epd->bInterval; | |
1506 | ++out_eps; | |
1507 | } | |
1508 | if (in_eps < max_endpoints && | |
1509 | (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) { | |
1510 | endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1511 | if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) | |
1512 | endpoint[in_eps].in_interval = epd->bInterval; | |
1513 | ++in_eps; | |
1514 | } | |
1515 | } | |
1516 | return (out_eps || in_eps) ? 0 : -ENOENT; | |
1517 | } | |
1518 | ||
1519 | /* | |
1520 | * Detects the endpoints for one-port-per-endpoint protocols. | |
1521 | */ | |
86e07d34 TI |
1522 | static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi, |
1523 | struct snd_usb_midi_endpoint_info* endpoints) | |
1da177e4 LT |
1524 | { |
1525 | int err, i; | |
1526 | ||
1527 | err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS); | |
1528 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1529 | if (endpoints[i].out_ep) | |
1530 | endpoints[i].out_cables = 0x0001; | |
1531 | if (endpoints[i].in_ep) | |
1532 | endpoints[i].in_cables = 0x0001; | |
1533 | } | |
1534 | return err; | |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * Detects the endpoints and ports of Yamaha devices. | |
1539 | */ | |
86e07d34 TI |
1540 | static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi, |
1541 | struct snd_usb_midi_endpoint_info* endpoint) | |
1da177e4 LT |
1542 | { |
1543 | struct usb_interface* intf; | |
1544 | struct usb_host_interface *hostif; | |
1545 | struct usb_interface_descriptor* intfd; | |
1546 | uint8_t* cs_desc; | |
1547 | ||
1548 | intf = umidi->iface; | |
1549 | if (!intf) | |
1550 | return -ENOENT; | |
1551 | hostif = intf->altsetting; | |
1552 | intfd = get_iface_desc(hostif); | |
1553 | if (intfd->bNumEndpoints < 1) | |
1554 | return -ENOENT; | |
1555 | ||
1556 | /* | |
1557 | * For each port there is one MIDI_IN/OUT_JACK descriptor, not | |
1558 | * necessarily with any useful contents. So simply count 'em. | |
1559 | */ | |
1560 | for (cs_desc = hostif->extra; | |
1561 | cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2; | |
1562 | cs_desc += cs_desc[0]) { | |
c4a87ef4 | 1563 | if (cs_desc[1] == USB_DT_CS_INTERFACE) { |
1da177e4 LT |
1564 | if (cs_desc[2] == MIDI_IN_JACK) |
1565 | endpoint->in_cables = (endpoint->in_cables << 1) | 1; | |
1566 | else if (cs_desc[2] == MIDI_OUT_JACK) | |
1567 | endpoint->out_cables = (endpoint->out_cables << 1) | 1; | |
1568 | } | |
1569 | } | |
1570 | if (!endpoint->in_cables && !endpoint->out_cables) | |
1571 | return -ENOENT; | |
1572 | ||
1573 | return snd_usbmidi_detect_endpoints(umidi, endpoint, 1); | |
1574 | } | |
1575 | ||
1576 | /* | |
1577 | * Creates the endpoints and their ports for Midiman devices. | |
1578 | */ | |
86e07d34 TI |
1579 | static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi, |
1580 | struct snd_usb_midi_endpoint_info* endpoint) | |
1da177e4 | 1581 | { |
86e07d34 | 1582 | struct snd_usb_midi_endpoint_info ep_info; |
1da177e4 LT |
1583 | struct usb_interface* intf; |
1584 | struct usb_host_interface *hostif; | |
1585 | struct usb_interface_descriptor* intfd; | |
1586 | struct usb_endpoint_descriptor* epd; | |
1587 | int cable, err; | |
1588 | ||
1589 | intf = umidi->iface; | |
1590 | if (!intf) | |
1591 | return -ENOENT; | |
1592 | hostif = intf->altsetting; | |
1593 | intfd = get_iface_desc(hostif); | |
1594 | /* | |
1595 | * The various MidiSport devices have more or less random endpoint | |
1596 | * numbers, so we have to identify the endpoints by their index in | |
1597 | * the descriptor array, like the driver for that other OS does. | |
1598 | * | |
1599 | * There is one interrupt input endpoint for all input ports, one | |
1600 | * bulk output endpoint for even-numbered ports, and one for odd- | |
1601 | * numbered ports. Both bulk output endpoints have corresponding | |
1602 | * input bulk endpoints (at indices 1 and 3) which aren't used. | |
1603 | */ | |
1604 | if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) { | |
1605 | snd_printdd(KERN_ERR "not enough endpoints\n"); | |
1606 | return -ENOENT; | |
1607 | } | |
1608 | ||
1609 | epd = get_endpoint(hostif, 0); | |
1610 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN || | |
1611 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) { | |
1612 | snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n"); | |
1613 | return -ENXIO; | |
1614 | } | |
1615 | epd = get_endpoint(hostif, 2); | |
1616 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT || | |
1617 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) { | |
1618 | snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n"); | |
1619 | return -ENXIO; | |
1620 | } | |
1621 | if (endpoint->out_cables > 0x0001) { | |
1622 | epd = get_endpoint(hostif, 4); | |
1623 | if ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_OUT || | |
1624 | (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) { | |
1625 | snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n"); | |
1626 | return -ENXIO; | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1631 | ep_info.out_cables = endpoint->out_cables & 0x5555; | |
1632 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); | |
1633 | if (err < 0) | |
1634 | return err; | |
1635 | ||
1636 | ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1637 | ep_info.in_interval = get_endpoint(hostif, 0)->bInterval; | |
1638 | ep_info.in_cables = endpoint->in_cables; | |
1639 | err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); | |
1640 | if (err < 0) | |
1641 | return err; | |
1642 | ||
1643 | if (endpoint->out_cables > 0x0001) { | |
1644 | ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
1645 | ep_info.out_cables = endpoint->out_cables & 0xaaaa; | |
1646 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]); | |
1647 | if (err < 0) | |
1648 | return err; | |
1649 | } | |
1650 | ||
1651 | for (cable = 0; cable < 0x10; ++cable) { | |
1652 | if (endpoint->out_cables & (1 << cable)) | |
1653 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable, | |
1654 | &umidi->endpoints[cable & 1].out->ports[cable].substream); | |
1655 | if (endpoint->in_cables & (1 << cable)) | |
1656 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable, | |
1657 | &umidi->endpoints[0].in->ports[cable].substream); | |
1658 | } | |
1659 | return 0; | |
1660 | } | |
1661 | ||
a7b928ac CL |
1662 | static struct snd_rawmidi_global_ops snd_usbmidi_ops = { |
1663 | .get_port_info = snd_usbmidi_get_port_info, | |
1664 | }; | |
1665 | ||
86e07d34 | 1666 | static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi, |
1da177e4 LT |
1667 | int out_ports, int in_ports) |
1668 | { | |
86e07d34 | 1669 | struct snd_rawmidi *rmidi; |
1da177e4 LT |
1670 | int err; |
1671 | ||
1672 | err = snd_rawmidi_new(umidi->chip->card, "USB MIDI", | |
1673 | umidi->chip->next_midi_device++, | |
1674 | out_ports, in_ports, &rmidi); | |
1675 | if (err < 0) | |
1676 | return err; | |
1677 | strcpy(rmidi->name, umidi->chip->card->shortname); | |
1678 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | | |
1679 | SNDRV_RAWMIDI_INFO_INPUT | | |
1680 | SNDRV_RAWMIDI_INFO_DUPLEX; | |
a7b928ac | 1681 | rmidi->ops = &snd_usbmidi_ops; |
1da177e4 LT |
1682 | rmidi->private_data = umidi; |
1683 | rmidi->private_free = snd_usbmidi_rawmidi_free; | |
1684 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops); | |
1685 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops); | |
1686 | ||
1687 | umidi->rmidi = rmidi; | |
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * Temporarily stop input. | |
1693 | */ | |
1694 | void snd_usbmidi_input_stop(struct list_head* p) | |
1695 | { | |
86e07d34 | 1696 | struct snd_usb_midi* umidi; |
1da177e4 LT |
1697 | int i; |
1698 | ||
86e07d34 | 1699 | umidi = list_entry(p, struct snd_usb_midi, list); |
1da177e4 | 1700 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
86e07d34 | 1701 | struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; |
1da177e4 LT |
1702 | if (ep->in) |
1703 | usb_kill_urb(ep->in->urb); | |
1704 | } | |
1705 | } | |
1706 | ||
86e07d34 | 1707 | static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep) |
1da177e4 LT |
1708 | { |
1709 | if (ep) { | |
1710 | struct urb* urb = ep->urb; | |
1711 | urb->dev = ep->umidi->chip->dev; | |
1712 | snd_usbmidi_submit_urb(urb, GFP_KERNEL); | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | /* | |
1717 | * Resume input after a call to snd_usbmidi_input_stop(). | |
1718 | */ | |
1719 | void snd_usbmidi_input_start(struct list_head* p) | |
1720 | { | |
86e07d34 | 1721 | struct snd_usb_midi* umidi; |
1da177e4 LT |
1722 | int i; |
1723 | ||
86e07d34 | 1724 | umidi = list_entry(p, struct snd_usb_midi, list); |
1da177e4 LT |
1725 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) |
1726 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); | |
1727 | } | |
1728 | ||
1729 | /* | |
1730 | * Creates and registers everything needed for a MIDI streaming interface. | |
1731 | */ | |
86e07d34 | 1732 | int snd_usb_create_midi_interface(struct snd_usb_audio* chip, |
1da177e4 | 1733 | struct usb_interface* iface, |
86e07d34 | 1734 | const struct snd_usb_audio_quirk* quirk) |
1da177e4 | 1735 | { |
86e07d34 TI |
1736 | struct snd_usb_midi* umidi; |
1737 | struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS]; | |
1da177e4 LT |
1738 | int out_ports, in_ports; |
1739 | int i, err; | |
1740 | ||
561b220a | 1741 | umidi = kzalloc(sizeof(*umidi), GFP_KERNEL); |
1da177e4 LT |
1742 | if (!umidi) |
1743 | return -ENOMEM; | |
1744 | umidi->chip = chip; | |
1745 | umidi->iface = iface; | |
1746 | umidi->quirk = quirk; | |
1747 | umidi->usb_protocol_ops = &snd_usbmidi_standard_ops; | |
c8846970 | 1748 | init_timer(&umidi->error_timer); |
c0792e00 | 1749 | spin_lock_init(&umidi->disc_lock); |
c8846970 CL |
1750 | umidi->error_timer.function = snd_usbmidi_error_timer; |
1751 | umidi->error_timer.data = (unsigned long)umidi; | |
1da177e4 LT |
1752 | |
1753 | /* detect the endpoint(s) to use */ | |
1754 | memset(endpoints, 0, sizeof(endpoints)); | |
d1bda045 CL |
1755 | switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) { |
1756 | case QUIRK_MIDI_STANDARD_INTERFACE: | |
1da177e4 | 1757 | err = snd_usbmidi_get_ms_info(umidi, endpoints); |
d05cc104 CL |
1758 | if (chip->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */ |
1759 | umidi->usb_protocol_ops = | |
1760 | &snd_usbmidi_maudio_broken_running_status_ops; | |
d1bda045 | 1761 | break; |
030a07e4 KW |
1762 | case QUIRK_MIDI_US122L: |
1763 | umidi->usb_protocol_ops = &snd_usbmidi_122l_ops; | |
1764 | /* fall through */ | |
d1bda045 CL |
1765 | case QUIRK_MIDI_FIXED_ENDPOINT: |
1766 | memcpy(&endpoints[0], quirk->data, | |
86e07d34 | 1767 | sizeof(struct snd_usb_midi_endpoint_info)); |
d1bda045 CL |
1768 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); |
1769 | break; | |
1770 | case QUIRK_MIDI_YAMAHA: | |
1771 | err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]); | |
1772 | break; | |
1773 | case QUIRK_MIDI_MIDIMAN: | |
1774 | umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops; | |
1775 | memcpy(&endpoints[0], quirk->data, | |
86e07d34 | 1776 | sizeof(struct snd_usb_midi_endpoint_info)); |
d1bda045 CL |
1777 | err = 0; |
1778 | break; | |
1779 | case QUIRK_MIDI_NOVATION: | |
1780 | umidi->usb_protocol_ops = &snd_usbmidi_novation_ops; | |
1781 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); | |
1782 | break; | |
1783 | case QUIRK_MIDI_RAW: | |
1784 | umidi->usb_protocol_ops = &snd_usbmidi_raw_ops; | |
1785 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); | |
1786 | break; | |
1787 | case QUIRK_MIDI_EMAGIC: | |
1788 | umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops; | |
1789 | memcpy(&endpoints[0], quirk->data, | |
86e07d34 | 1790 | sizeof(struct snd_usb_midi_endpoint_info)); |
d1bda045 CL |
1791 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); |
1792 | break; | |
cc7a59bd | 1793 | case QUIRK_MIDI_CME: |
61870aed | 1794 | umidi->usb_protocol_ops = &snd_usbmidi_cme_ops; |
d1bda045 CL |
1795 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
1796 | break; | |
1797 | default: | |
1798 | snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); | |
1799 | err = -ENXIO; | |
1800 | break; | |
1da177e4 LT |
1801 | } |
1802 | if (err < 0) { | |
1803 | kfree(umidi); | |
1804 | return err; | |
1805 | } | |
1806 | ||
1807 | /* create rawmidi device */ | |
1808 | out_ports = 0; | |
1809 | in_ports = 0; | |
1810 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { | |
1811 | out_ports += snd_usbmidi_count_bits(endpoints[i].out_cables); | |
1812 | in_ports += snd_usbmidi_count_bits(endpoints[i].in_cables); | |
1813 | } | |
1814 | err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports); | |
1815 | if (err < 0) { | |
1816 | kfree(umidi); | |
1817 | return err; | |
1818 | } | |
1819 | ||
1820 | /* create endpoint/port structures */ | |
1821 | if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN) | |
1822 | err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]); | |
1823 | else | |
1824 | err = snd_usbmidi_create_endpoints(umidi, endpoints); | |
1825 | if (err < 0) { | |
1826 | snd_usbmidi_free(umidi); | |
1827 | return err; | |
1828 | } | |
1829 | ||
1830 | list_add(&umidi->list, &umidi->chip->midi_list); | |
1831 | ||
1832 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) | |
1833 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); | |
1834 | return 0; | |
1835 | } | |
1836 | ||
1837 | EXPORT_SYMBOL(snd_usb_create_midi_interface); | |
1838 | EXPORT_SYMBOL(snd_usbmidi_input_stop); | |
1839 | EXPORT_SYMBOL(snd_usbmidi_input_start); | |
1840 | EXPORT_SYMBOL(snd_usbmidi_disconnect); |