diff options
author | Adrian Bunk <bunk@stusta.de> | 2006-02-04 18:03:28 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-20 17:49:54 -0500 |
commit | 9628416a542488230b53df48d90d4a967dea41c8 (patch) | |
tree | b356d4c1ea8065263eda375284b87ba64d735d5f /drivers/usb/class/usb-midi.c | |
parent | 29da7937a11a47bad64558c3be4d998c4ea5e823 (diff) |
[PATCH] USB: remove OBSOLETE_OSS_USB_DRIVER drivers
This patch removes the obsolete USB_MIDI and USB_AUDIO drivers.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/class/usb-midi.c')
-rw-r--r-- | drivers/usb/class/usb-midi.c | 2153 |
1 files changed, 0 insertions, 2153 deletions
diff --git a/drivers/usb/class/usb-midi.c b/drivers/usb/class/usb-midi.c deleted file mode 100644 index f13f004d311f..000000000000 --- a/drivers/usb/class/usb-midi.c +++ /dev/null | |||
@@ -1,2153 +0,0 @@ | |||
1 | /* | ||
2 | usb-midi.c -- USB-MIDI driver | ||
3 | |||
4 | Copyright (C) 2001 | ||
5 | NAGANO Daisuke <breeze.nagano@nifty.ne.jp> | ||
6 | |||
7 | This program is free software; you can redistribute it and/or modify | ||
8 | it under the terms of the GNU General Public License as published by | ||
9 | the Free Software Foundation; either version 2, or (at your option) | ||
10 | any later version. | ||
11 | |||
12 | This program is distributed in the hope that it will be useful, | ||
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | GNU General Public License for more details. | ||
16 | |||
17 | You should have received a copy of the GNU General Public License | ||
18 | along with this program; if not, write to the Free Software | ||
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
20 | |||
21 | This driver is based on: | ||
22 | - 'Universal Serial Bus Device Class Definition for MIDI Device' | ||
23 | - linux/drivers/sound/es1371.c, linux/drivers/usb/audio.c | ||
24 | - alsa/lowlevel/pci/cs64xx.c | ||
25 | - umidi.c for NetBSD | ||
26 | */ | ||
27 | |||
28 | /* ------------------------------------------------------------------------- */ | ||
29 | |||
30 | |||
31 | #include <linux/module.h> | ||
32 | #include <linux/kernel.h> | ||
33 | #include <linux/sched.h> | ||
34 | #include <linux/list.h> | ||
35 | #include <linux/slab.h> | ||
36 | #include <linux/usb.h> | ||
37 | #include <linux/poll.h> | ||
38 | #include <linux/sound.h> | ||
39 | #include <linux/init.h> | ||
40 | #include <asm/semaphore.h> | ||
41 | |||
42 | #include "usb-midi.h" | ||
43 | |||
44 | /* ------------------------------------------------------------------------- */ | ||
45 | |||
46 | /* More verbose on syslog */ | ||
47 | #undef MIDI_DEBUG | ||
48 | |||
49 | #define MIDI_IN_BUFSIZ 1024 | ||
50 | |||
51 | #define HAVE_SUPPORT_USB_MIDI_CLASS | ||
52 | |||
53 | #undef HAVE_SUPPORT_ALSA | ||
54 | |||
55 | /* ------------------------------------------------------------------------- */ | ||
56 | |||
57 | static int singlebyte = 0; | ||
58 | module_param(singlebyte, int, 0); | ||
59 | MODULE_PARM_DESC(singlebyte,"Enable sending MIDI messages with single message packet"); | ||
60 | |||
61 | static int maxdevices = 4; | ||
62 | module_param(maxdevices, int, 0); | ||
63 | MODULE_PARM_DESC(maxdevices,"Max number of allocatable MIDI device"); | ||
64 | |||
65 | static int uvendor = -1; | ||
66 | module_param(uvendor, int, 0); | ||
67 | MODULE_PARM_DESC(uvendor, "The USB Vendor ID of a semi-compliant interface"); | ||
68 | |||
69 | static int uproduct = -1; | ||
70 | module_param(uproduct, int, 0); | ||
71 | MODULE_PARM_DESC(uproduct, "The USB Product ID of a semi-compliant interface"); | ||
72 | |||
73 | static int uinterface = -1; | ||
74 | module_param(uinterface, int, 0); | ||
75 | MODULE_PARM_DESC(uinterface, "The Interface number of a semi-compliant interface"); | ||
76 | |||
77 | static int ualt = -1; | ||
78 | module_param(ualt, int, 0); | ||
79 | MODULE_PARM_DESC(ualt, "The optional alternative setting of a semi-compliant interface"); | ||
80 | |||
81 | static int umin = -1; | ||
82 | module_param(umin, int, 0); | ||
83 | MODULE_PARM_DESC(umin, "The input endpoint of a semi-compliant interface"); | ||
84 | |||
85 | static int umout = -1; | ||
86 | module_param(umout, int, 0); | ||
87 | MODULE_PARM_DESC(umout, "The output endpoint of a semi-compliant interface"); | ||
88 | |||
89 | static int ucable = -1; | ||
90 | module_param(ucable, int, 0); | ||
91 | MODULE_PARM_DESC(ucable, "The cable number used for a semi-compliant interface"); | ||
92 | |||
93 | /** Note -- the usb_string() returns only Latin-1 characters. | ||
94 | * (unicode chars <= 255). To support Japanese, a unicode16LE-to-EUC or | ||
95 | * unicode16LE-to-JIS routine is needed to wrap around usb_get_string(). | ||
96 | **/ | ||
97 | static unsigned short ulangid = 0x0409; /** 0x0411 for Japanese **/ | ||
98 | module_param(ulangid, ushort, 0); | ||
99 | MODULE_PARM_DESC(ulangid, "The optional preferred USB Language ID for all devices"); | ||
100 | |||
101 | MODULE_AUTHOR("NAGANO Daisuke <breeze.nagano@nifty.ne.jp>"); | ||
102 | MODULE_DESCRIPTION("USB-MIDI driver"); | ||
103 | MODULE_LICENSE("GPL"); | ||
104 | |||
105 | /* ------------------------------------------------------------------------- */ | ||
106 | |||
107 | /** MIDIStreaming Class-Specific Interface Descriptor Subtypes **/ | ||
108 | |||
109 | #define MS_DESCRIPTOR_UNDEFINED 0 | ||
110 | #define MS_HEADER 1 | ||
111 | #define MIDI_IN_JACK 2 | ||
112 | #define MIDI_OUT_JACK 3 | ||
113 | /* Spec reads: ELEMENT */ | ||
114 | #define ELEMENT_DESCRIPTOR 4 | ||
115 | |||
116 | #define MS_HEADER_LENGTH 7 | ||
117 | |||
118 | /** MIDIStreaming Class-Specific Endpoint Descriptor Subtypes **/ | ||
119 | |||
120 | #define DESCRIPTOR_UNDEFINED 0 | ||
121 | /* Spec reads: MS_GENERAL */ | ||
122 | #define MS_GENERAL_ENDPOINT 1 | ||
123 | |||
124 | /** MIDIStreaming MIDI IN and OUT Jack Types **/ | ||
125 | |||
126 | #define JACK_TYPE_UNDEFINED 0 | ||
127 | /* Spec reads: EMBEDDED */ | ||
128 | #define EMBEDDED_JACK 1 | ||
129 | /* Spec reads: EXTERNAL */ | ||
130 | #define EXTERNAL_JACK 2 | ||
131 | |||
132 | |||
133 | /* structure summary | ||
134 | |||
135 | usb_midi_state usb_device | ||
136 | | | | ||
137 | *| *| per ep | ||
138 | in_ep out_ep | ||
139 | | | | ||
140 | *| *| per cable | ||
141 | min mout | ||
142 | | | (cable to device pairing magic) | ||
143 | | | | ||
144 | usb_midi_dev dev_id (major,minor) == file->private_data | ||
145 | |||
146 | */ | ||
147 | |||
148 | /* usb_midi_state: corresponds to a USB-MIDI module */ | ||
149 | struct usb_midi_state { | ||
150 | struct list_head mididev; | ||
151 | |||
152 | struct usb_device *usbdev; | ||
153 | |||
154 | struct list_head midiDevList; | ||
155 | struct list_head inEndpointList; | ||
156 | struct list_head outEndpointList; | ||
157 | |||
158 | spinlock_t lock; | ||
159 | |||
160 | unsigned int count; /* usage counter */ | ||
161 | }; | ||
162 | |||
163 | /* midi_out_endpoint: corresponds to an output endpoint */ | ||
164 | struct midi_out_endpoint { | ||
165 | struct list_head list; | ||
166 | |||
167 | struct usb_device *usbdev; | ||
168 | int endpoint; | ||
169 | spinlock_t lock; | ||
170 | wait_queue_head_t wait; | ||
171 | |||
172 | unsigned char *buf; | ||
173 | int bufWrPtr; | ||
174 | int bufSize; | ||
175 | |||
176 | struct urb *urb; | ||
177 | }; | ||
178 | |||
179 | /* midi_in_endpoint: corresponds to an input endpoint */ | ||
180 | struct midi_in_endpoint { | ||
181 | struct list_head list; | ||
182 | |||
183 | struct usb_device *usbdev; | ||
184 | int endpoint; | ||
185 | spinlock_t lock; | ||
186 | wait_queue_head_t wait; | ||
187 | |||
188 | struct usb_mididev *cables[16]; // cables open for read | ||
189 | int readers; // number of cables open for read | ||
190 | |||
191 | struct urb *urb; | ||
192 | unsigned char *recvBuf; | ||
193 | int recvBufSize; | ||
194 | int urbSubmitted; //FIXME: == readers > 0 | ||
195 | }; | ||
196 | |||
197 | /* usb_mididev: corresponds to a logical device */ | ||
198 | struct usb_mididev { | ||
199 | struct list_head list; | ||
200 | |||
201 | struct usb_midi_state *midi; | ||
202 | int dev_midi; | ||
203 | mode_t open_mode; | ||
204 | |||
205 | struct { | ||
206 | struct midi_in_endpoint *ep; | ||
207 | int cableId; | ||
208 | |||
209 | // as we are pushing data from usb_bulk_read to usb_midi_read, | ||
210 | // we need a larger, cyclic buffer here. | ||
211 | unsigned char buf[MIDI_IN_BUFSIZ]; | ||
212 | int bufRdPtr; | ||
213 | int bufWrPtr; | ||
214 | int bufRemains; | ||
215 | } min; | ||
216 | |||
217 | struct { | ||
218 | struct midi_out_endpoint *ep; | ||
219 | int cableId; | ||
220 | |||
221 | unsigned char buf[3]; | ||
222 | int bufPtr; | ||
223 | int bufRemains; | ||
224 | |||
225 | int isInExclusive; | ||
226 | unsigned char lastEvent; | ||
227 | } mout; | ||
228 | |||
229 | int singlebyte; | ||
230 | }; | ||
231 | |||
232 | /** Map the high nybble of MIDI voice messages to number of Message bytes. | ||
233 | * High nyble ranges from 0x8 to 0xe | ||
234 | */ | ||
235 | |||
236 | static int remains_80e0[] = { | ||
237 | 3, /** 0x8X Note Off **/ | ||
238 | 3, /** 0x9X Note On **/ | ||
239 | 3, /** 0xAX Poly-key pressure **/ | ||
240 | 3, /** 0xBX Control Change **/ | ||
241 | 2, /** 0xCX Program Change **/ | ||
242 | 2, /** 0xDX Channel pressure **/ | ||
243 | 3 /** 0xEX PitchBend Change **/ | ||
244 | }; | ||
245 | |||
246 | /** Map the messages to a number of Message bytes. | ||
247 | * | ||
248 | **/ | ||
249 | static int remains_f0f6[] = { | ||
250 | 0, /** 0xF0 **/ | ||
251 | 2, /** 0XF1 **/ | ||
252 | 3, /** 0XF2 **/ | ||
253 | 2, /** 0XF3 **/ | ||
254 | 2, /** 0XF4 (Undefined by MIDI Spec, and subject to change) **/ | ||
255 | 2, /** 0XF5 (Undefined by MIDI Spec, and subject to change) **/ | ||
256 | 1 /** 0XF6 **/ | ||
257 | }; | ||
258 | |||
259 | /** Map the messages to a CIN (Code Index Number). | ||
260 | * | ||
261 | **/ | ||
262 | static int cin_f0ff[] = { | ||
263 | 4, /** 0xF0 System Exclusive Message Start (special cases may be 6 or 7) */ | ||
264 | 2, /** 0xF1 **/ | ||
265 | 3, /** 0xF2 **/ | ||
266 | 2, /** 0xF3 **/ | ||
267 | 2, /** 0xF4 **/ | ||
268 | 2, /** 0xF5 **/ | ||
269 | 5, /** 0xF6 **/ | ||
270 | 5, /** 0xF7 End of System Exclusive Message (May be 6 or 7) **/ | ||
271 | 5, /** 0xF8 **/ | ||
272 | 5, /** 0xF9 **/ | ||
273 | 5, /** 0xFA **/ | ||
274 | 5, /** 0xFB **/ | ||
275 | 5, /** 0xFC **/ | ||
276 | 5, /** 0xFD **/ | ||
277 | 5, /** 0xFE **/ | ||
278 | 5 /** 0xFF **/ | ||
279 | }; | ||
280 | |||
281 | /** Map MIDIStreaming Event packet Code Index Number (low nybble of byte 0) | ||
282 | * to the number of bytes of valid MIDI data. | ||
283 | * | ||
284 | * CIN of 0 and 1 are NOT USED in MIDIStreaming 1.0. | ||
285 | * | ||
286 | **/ | ||
287 | static int cin_to_len[] = { | ||
288 | 0, 0, 2, 3, | ||
289 | 3, 1, 2, 3, | ||
290 | 3, 3, 3, 3, | ||
291 | 2, 2, 3, 1 | ||
292 | }; | ||
293 | |||
294 | |||
295 | /* ------------------------------------------------------------------------- */ | ||
296 | |||
297 | static struct list_head mididevs = LIST_HEAD_INIT(mididevs); | ||
298 | |||
299 | static DECLARE_MUTEX(open_sem); | ||
300 | static DECLARE_WAIT_QUEUE_HEAD(open_wait); | ||
301 | |||
302 | |||
303 | /* ------------------------------------------------------------------------- */ | ||
304 | |||
305 | static void usb_write_callback(struct urb *urb, struct pt_regs *regs) | ||
306 | { | ||
307 | struct midi_out_endpoint *ep = (struct midi_out_endpoint *)urb->context; | ||
308 | |||
309 | if ( waitqueue_active( &ep->wait ) ) | ||
310 | wake_up_interruptible( &ep->wait ); | ||
311 | } | ||
312 | |||
313 | |||
314 | static int usb_write( struct midi_out_endpoint *ep, unsigned char *buf, int len ) | ||
315 | { | ||
316 | struct usb_device *d; | ||
317 | int pipe; | ||
318 | int ret = 0; | ||
319 | int status; | ||
320 | int maxretry = 50; | ||
321 | |||
322 | DECLARE_WAITQUEUE(wait,current); | ||
323 | init_waitqueue_head(&ep->wait); | ||
324 | |||
325 | d = ep->usbdev; | ||
326 | pipe = usb_sndbulkpipe(d, ep->endpoint); | ||
327 | usb_fill_bulk_urb( ep->urb, d, pipe, (unsigned char*)buf, len, | ||
328 | usb_write_callback, ep ); | ||
329 | |||
330 | status = usb_submit_urb(ep->urb, GFP_KERNEL); | ||
331 | |||
332 | if (status) { | ||
333 | printk(KERN_ERR "usbmidi: Cannot submit urb (%d)\n",status); | ||
334 | ret = -EIO; | ||
335 | goto error; | ||
336 | } | ||
337 | |||
338 | add_wait_queue( &ep->wait, &wait ); | ||
339 | set_current_state( TASK_INTERRUPTIBLE ); | ||
340 | |||
341 | while( ep->urb->status == -EINPROGRESS ) { | ||
342 | if ( maxretry-- < 0 ) { | ||
343 | printk(KERN_ERR "usbmidi: usb_bulk_msg timed out\n"); | ||
344 | ret = -ETIME; | ||
345 | break; | ||
346 | } | ||
347 | interruptible_sleep_on_timeout( &ep->wait, 10 ); | ||
348 | } | ||
349 | set_current_state( TASK_RUNNING ); | ||
350 | remove_wait_queue( &ep->wait, &wait ); | ||
351 | |||
352 | error: | ||
353 | return ret; | ||
354 | } | ||
355 | |||
356 | |||
357 | /** Copy data from URB to In endpoint buf. | ||
358 | * Discard if CIN == 0 or CIN = 1. | ||
359 | * | ||
360 | * | ||
361 | **/ | ||
362 | |||
363 | static void usb_bulk_read(struct urb *urb, struct pt_regs *regs) | ||
364 | { | ||
365 | struct midi_in_endpoint *ep = (struct midi_in_endpoint *)(urb->context); | ||
366 | unsigned char *data = urb->transfer_buffer; | ||
367 | int i, j, wake; | ||
368 | |||
369 | if ( !ep->urbSubmitted ) { | ||
370 | return; | ||
371 | } | ||
372 | |||
373 | if ( (urb->status == 0) && (urb->actual_length > 0) ) { | ||
374 | wake = 0; | ||
375 | spin_lock( &ep->lock ); | ||
376 | |||
377 | for(j = 0; j < urb->actual_length; j += 4) { | ||
378 | int cin = (data[j]>>0)&0xf; | ||
379 | int cab = (data[j]>>4)&0xf; | ||
380 | struct usb_mididev *cable = ep->cables[cab]; | ||
381 | if ( cable ) { | ||
382 | int len = cin_to_len[cin]; /** length of MIDI data **/ | ||
383 | for (i = 0; i < len; i++) { | ||
384 | cable->min.buf[cable->min.bufWrPtr] = data[1+i+j]; | ||
385 | cable->min.bufWrPtr = (cable->min.bufWrPtr+1)%MIDI_IN_BUFSIZ; | ||
386 | if (cable->min.bufRemains < MIDI_IN_BUFSIZ) | ||
387 | cable->min.bufRemains += 1; | ||
388 | else /** need to drop data **/ | ||
389 | cable->min.bufRdPtr += (cable->min.bufRdPtr+1)%MIDI_IN_BUFSIZ; | ||
390 | wake = 1; | ||
391 | } | ||
392 | } | ||
393 | } | ||
394 | |||
395 | spin_unlock ( &ep->lock ); | ||
396 | if ( wake ) { | ||
397 | wake_up( &ep->wait ); | ||
398 | } | ||
399 | } | ||
400 | |||
401 | /* urb->dev must be reinitialized on 2.4.x kernels */ | ||
402 | urb->dev = ep->usbdev; | ||
403 | |||
404 | urb->actual_length = 0; | ||
405 | usb_submit_urb(urb, GFP_ATOMIC); | ||
406 | } | ||
407 | |||
408 | |||
409 | |||
410 | /* ------------------------------------------------------------------------- */ | ||
411 | |||
412 | /* This routine must be called with spin_lock */ | ||
413 | |||
414 | /** Wrapper around usb_write(). | ||
415 | * This routine must be called with spin_lock held on ep. | ||
416 | * Called by midiWrite(), putOneMidiEvent(), and usb_midi_write(); | ||
417 | **/ | ||
418 | static int flush_midi_buffer( struct midi_out_endpoint *ep ) | ||
419 | { | ||
420 | int ret=0; | ||
421 | |||
422 | if ( ep->bufWrPtr > 0 ) { | ||
423 | ret = usb_write( ep, ep->buf, ep->bufWrPtr ); | ||
424 | ep->bufWrPtr = 0; | ||
425 | } | ||
426 | |||
427 | return ret; | ||
428 | } | ||
429 | |||
430 | |||
431 | /* ------------------------------------------------------------------------- */ | ||
432 | |||
433 | |||
434 | /** Given a MIDI Event, determine size of data to be attached to | ||
435 | * USB-MIDI packet. | ||
436 | * Returns 1, 2 or 3. | ||
437 | * Called by midiWrite(); | ||
438 | * Uses remains_80e0 and remains_f0f6; | ||
439 | **/ | ||
440 | static int get_remains(int event) | ||
441 | { | ||
442 | int ret; | ||
443 | |||
444 | if ( event < 0x80 ) { | ||
445 | ret = 1; | ||
446 | } else if ( event < 0xf0 ) { | ||
447 | ret = remains_80e0[((event-0x80)>>4)&0x0f]; | ||
448 | } else if ( event < 0xf7 ) { | ||
449 | ret = remains_f0f6[event-0xf0]; | ||
450 | } else { | ||
451 | ret = 1; | ||
452 | } | ||
453 | |||
454 | return ret; | ||
455 | } | ||
456 | |||
457 | /** Given the output MIDI data in the output buffer, computes a reasonable | ||
458 | * CIN. | ||
459 | * Called by putOneMidiEvent(). | ||
460 | **/ | ||
461 | static int get_CIN( struct usb_mididev *m ) | ||
462 | { | ||
463 | int cin; | ||
464 | |||
465 | if ( m->mout.buf[0] == 0xf7 ) { | ||
466 | cin = 5; | ||
467 | } | ||
468 | else if ( m->mout.buf[1] == 0xf7 ) { | ||
469 | cin = 6; | ||
470 | } | ||
471 | else if ( m->mout.buf[2] == 0xf7 ) { | ||
472 | cin = 7; | ||
473 | } | ||
474 | else { | ||
475 | if ( m->mout.isInExclusive == 1 ) { | ||
476 | cin = 4; | ||
477 | } else if ( m->mout.buf[0] < 0x80 ) { | ||
478 | /** One byte that we know nothing about. **/ | ||
479 | cin = 0xF; | ||
480 | } else if ( m->mout.buf[0] < 0xf0 ) { | ||
481 | /** MIDI Voice messages 0x8X to 0xEX map to cin 0x8 to 0xE. **/ | ||
482 | cin = (m->mout.buf[0]>>4)&0x0f; | ||
483 | } | ||
484 | else { | ||
485 | /** Special lookup table exists for real-time events. **/ | ||
486 | cin = cin_f0ff[m->mout.buf[0]-0xf0]; | ||
487 | } | ||
488 | } | ||
489 | |||
490 | return cin; | ||
491 | } | ||
492 | |||
493 | |||
494 | /* ------------------------------------------------------------------------- */ | ||
495 | |||
496 | |||
497 | |||
498 | /** Move data to USB endpoint buffer. | ||
499 | * | ||
500 | **/ | ||
501 | static int put_one_midi_event(struct usb_mididev *m) | ||
502 | { | ||
503 | int cin; | ||
504 | unsigned long flags; | ||
505 | struct midi_out_endpoint *ep = m->mout.ep; | ||
506 | int ret=0; | ||
507 | |||
508 | cin = get_CIN( m ); | ||
509 | if ( cin > 0x0f || cin < 0 ) { | ||
510 | return -EINVAL; | ||
511 | } | ||
512 | |||
513 | spin_lock_irqsave( &ep->lock, flags ); | ||
514 | ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | cin; | ||
515 | ep->buf[ep->bufWrPtr++] = m->mout.buf[0]; | ||
516 | ep->buf[ep->bufWrPtr++] = m->mout.buf[1]; | ||
517 | ep->buf[ep->bufWrPtr++] = m->mout.buf[2]; | ||
518 | if ( ep->bufWrPtr >= ep->bufSize ) { | ||
519 | ret = flush_midi_buffer( ep ); | ||
520 | } | ||
521 | spin_unlock_irqrestore( &ep->lock, flags); | ||
522 | |||
523 | m->mout.buf[0] = m->mout.buf[1] = m->mout.buf[2] = 0; | ||
524 | m->mout.bufPtr = 0; | ||
525 | |||
526 | return ret; | ||
527 | } | ||
528 | |||
529 | /** Write the MIDI message v on the midi device. | ||
530 | * Called by usb_midi_write(); | ||
531 | * Responsible for packaging a MIDI data stream into USB-MIDI packets. | ||
532 | **/ | ||
533 | |||
534 | static int midi_write( struct usb_mididev *m, int v ) | ||
535 | { | ||
536 | unsigned long flags; | ||
537 | struct midi_out_endpoint *ep = m->mout.ep; | ||
538 | int ret=0; | ||
539 | unsigned char c = (unsigned char)v; | ||
540 | unsigned char sysrt_buf[4]; | ||
541 | |||
542 | if ( m->singlebyte != 0 ) { | ||
543 | /** Simple code to handle the single-byte USB-MIDI protocol. */ | ||
544 | spin_lock_irqsave( &ep->lock, flags ); | ||
545 | if ( ep->bufWrPtr+4 > ep->bufSize ) { | ||
546 | ret = flush_midi_buffer( ep ); | ||
547 | if ( !ret ) { | ||
548 | spin_unlock_irqrestore( &ep->lock, flags ); | ||
549 | return ret; | ||
550 | } | ||
551 | } | ||
552 | ep->buf[ep->bufWrPtr++] = (m->mout.cableId<<4) | 0x0f; /* single byte */ | ||
553 | ep->buf[ep->bufWrPtr++] = c; | ||
554 | ep->buf[ep->bufWrPtr++] = 0; | ||
555 | ep->buf[ep->bufWrPtr++] = 0; | ||
556 | if ( ep->bufWrPtr >= ep->bufSize ) { | ||
557 | ret = flush_midi_buffer( ep ); | ||
558 | } | ||
559 | spin_unlock_irqrestore( &ep->lock, flags ); | ||
560 | |||
561 | return ret; | ||
562 | } | ||
563 | /** Normal USB-MIDI protocol begins here. */ | ||
564 | |||
565 | if ( c > 0xf7 ) { /* system: Realtime messages */ | ||
566 | /** Realtime messages are written IMMEDIATELY. */ | ||
567 | sysrt_buf[0] = (m->mout.cableId<<4) | 0x0f; | ||
568 | sysrt_buf[1] = c; | ||
569 | sysrt_buf[2] = 0; | ||
570 | sysrt_buf[3] = 0; | ||
571 | spin_lock_irqsave( &ep->lock, flags ); | ||
572 | ret = usb_write( ep, sysrt_buf, 4 ); | ||
573 | spin_unlock_irqrestore( &ep->lock, flags ); | ||
574 | /* m->mout.lastEvent = 0; */ | ||
575 | |||
576 | return ret; | ||
577 | } | ||
578 | |||
579 | if ( c >= 0x80 ) { | ||
580 | if ( c < 0xf0 ) { | ||
581 | m->mout.lastEvent = c; | ||
582 | m->mout.isInExclusive = 0; | ||
583 | m->mout.bufRemains = get_remains(c); | ||
584 | } else if ( c == 0xf0 ) { | ||
585 | /* m->mout.lastEvent = 0; */ | ||
586 | m->mout.isInExclusive = 1; | ||
587 | m->mout.bufRemains = get_remains(c); | ||
588 | } else if ( c == 0xf7 && m->mout.isInExclusive == 1 ) { | ||
589 | /* m->mout.lastEvent = 0; */ | ||
590 | m->mout.isInExclusive = 0; | ||
591 | m->mout.bufRemains = 1; | ||
592 | } else if ( c > 0xf0 ) { | ||
593 | /* m->mout.lastEvent = 0; */ | ||
594 | m->mout.isInExclusive = 0; | ||
595 | m->mout.bufRemains = get_remains(c); | ||
596 | } | ||
597 | |||
598 | } else if ( m->mout.bufRemains == 0 && m->mout.isInExclusive == 0 ) { | ||
599 | if ( m->mout.lastEvent == 0 ) { | ||
600 | return 0; /* discard, waiting for the first event */ | ||
601 | } | ||
602 | /** track status **/ | ||
603 | m->mout.buf[0] = m->mout.lastEvent; | ||
604 | m->mout.bufPtr = 1; | ||
605 | m->mout.bufRemains = get_remains(m->mout.lastEvent)-1; | ||
606 | } | ||
607 | |||
608 | m->mout.buf[m->mout.bufPtr++] = c; | ||
609 | m->mout.bufRemains--; | ||
610 | if ( m->mout.bufRemains == 0 || m->mout.bufPtr >= 3) { | ||
611 | ret = put_one_midi_event(m); | ||
612 | } | ||
613 | |||
614 | return ret; | ||
615 | } | ||
616 | |||
617 | |||
618 | /* ------------------------------------------------------------------------- */ | ||
619 | |||
620 | /** Basic operation on /dev/midiXX as registered through struct file_operations. | ||
621 | * | ||
622 | * Basic contract: Used to change the current read/write position in a file. | ||
623 | * On success, the non-negative position is reported. | ||
624 | * On failure, the negative of an error code is reported. | ||
625 | * | ||
626 | * Because a MIDIStream is not a file, all seek operations are doomed to fail. | ||
627 | * | ||
628 | **/ | ||
629 | static loff_t usb_midi_llseek(struct file *file, loff_t offset, int origin) | ||
630 | { | ||
631 | /** Tell user you cannot seek on a PIPE-like device. **/ | ||
632 | return -ESPIPE; | ||
633 | } | ||
634 | |||
635 | |||
636 | /** Basic operation on /dev/midiXX as registered through struct file_operations. | ||
637 | * | ||
638 | * Basic contract: Block until count bytes have been read or an error occurs. | ||
639 | * | ||
640 | **/ | ||
641 | |||
642 | static ssize_t usb_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) | ||
643 | { | ||
644 | struct usb_mididev *m = (struct usb_mididev *)file->private_data; | ||
645 | struct midi_in_endpoint *ep = m->min.ep; | ||
646 | ssize_t ret; | ||
647 | DECLARE_WAITQUEUE(wait, current); | ||
648 | |||
649 | if ( !access_ok(VERIFY_READ, buffer, count) ) { | ||
650 | return -EFAULT; | ||
651 | } | ||
652 | if ( count == 0 ) { | ||
653 | return 0; | ||
654 | } | ||
655 | |||
656 | add_wait_queue( &ep->wait, &wait ); | ||
657 | ret = 0; | ||
658 | while( count > 0 ) { | ||
659 | int cnt; | ||
660 | int d = (int)count; | ||
661 | |||
662 | cnt = m->min.bufRemains; | ||
663 | if ( cnt > d ) { | ||
664 | cnt = d; | ||
665 | } | ||
666 | |||
667 | if ( cnt <= 0 ) { | ||
668 | if ( file->f_flags & O_NONBLOCK ) { | ||
669 | if (!ret) | ||
670 | ret = -EAGAIN; | ||
671 | break; | ||
672 | } | ||
673 | __set_current_state(TASK_INTERRUPTIBLE); | ||
674 | schedule(); | ||
675 | if (signal_pending(current)) { | ||
676 | if(!ret) | ||
677 | ret=-ERESTARTSYS; | ||
678 | break; | ||
679 | } | ||
680 | continue; | ||
681 | } | ||
682 | |||
683 | { | ||
684 | int i; | ||
685 | unsigned long flags; /* used to synchronize access to the endpoint */ | ||
686 | spin_lock_irqsave( &ep->lock, flags ); | ||
687 | for (i = 0; i < cnt; i++) { | ||
688 | if ( copy_to_user( buffer+i, m->min.buf+m->min.bufRdPtr, 1 ) ) { | ||
689 | if ( !ret ) | ||
690 | ret = -EFAULT; | ||
691 | break; | ||
692 | } | ||
693 | m->min.bufRdPtr = (m->min.bufRdPtr+1)%MIDI_IN_BUFSIZ; | ||
694 | m->min.bufRemains -= 1; | ||
695 | } | ||
696 | spin_unlock_irqrestore( &ep->lock, flags ); | ||
697 | } | ||
698 | |||
699 | count-=cnt; | ||
700 | buffer+=cnt; | ||
701 | ret+=cnt; | ||
702 | |||
703 | break; | ||
704 | } | ||
705 | |||
706 | remove_wait_queue( &ep->wait, &wait ); | ||
707 | set_current_state(TASK_RUNNING); | ||
708 | |||
709 | return ret; | ||
710 | } | ||
711 | |||
712 | |||
713 | /** Basic operation on /dev/midiXX as registered through struct file_operations. | ||
714 | * | ||
715 | * Basic Contract: Take MIDI data byte-by-byte and pass it to | ||
716 | * writeMidi() which packages MIDI data into USB-MIDI stream. | ||
717 | * Then flushMidiData() is called to ensure all bytes have been written | ||
718 | * in a timely fashion. | ||
719 | * | ||
720 | **/ | ||
721 | |||
722 | static ssize_t usb_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) | ||
723 | { | ||
724 | struct usb_mididev *m = (struct usb_mididev *)file->private_data; | ||
725 | ssize_t ret; | ||
726 | unsigned long int flags; | ||
727 | |||
728 | if ( !access_ok(VERIFY_READ, buffer, count) ) { | ||
729 | return -EFAULT; | ||
730 | } | ||
731 | if ( count == 0 ) { | ||
732 | return 0; | ||
733 | } | ||
734 | |||
735 | ret = 0; | ||
736 | while( count > 0 ) { | ||
737 | unsigned char c; | ||
738 | |||
739 | if (copy_from_user((unsigned char *)&c, buffer, 1)) { | ||
740 | if ( ret == 0 ) | ||
741 | ret = -EFAULT; | ||
742 | break; | ||
743 | } | ||
744 | if( midi_write(m, (int)c) ) { | ||
745 | if ( ret == 0 ) | ||
746 | ret = -EFAULT; | ||
747 | break; | ||
748 | } | ||
749 | count--; | ||
750 | buffer++; | ||
751 | ret++; | ||
752 | } | ||
753 | |||
754 | spin_lock_irqsave( &m->mout.ep->lock, flags ); | ||
755 | if ( flush_midi_buffer(m->mout.ep) < 0 ) { | ||
756 | ret = -EFAULT; | ||
757 | } | ||
758 | spin_unlock_irqrestore( &m->mout.ep->lock, flags ); | ||
759 | |||
760 | return ret; | ||
761 | } | ||
762 | |||
763 | /** Basic operation on /dev/midiXX as registered through struct file_operations. | ||
764 | * | ||
765 | * Basic contract: Wait (spin) until ready to read or write on the file. | ||
766 | * | ||
767 | **/ | ||
768 | static unsigned int usb_midi_poll(struct file *file, struct poll_table_struct *wait) | ||
769 | { | ||
770 | struct usb_mididev *m = (struct usb_mididev *)file->private_data; | ||
771 | struct midi_in_endpoint *iep = m->min.ep; | ||
772 | struct midi_out_endpoint *oep = m->mout.ep; | ||
773 | unsigned long flags; | ||
774 | unsigned int mask = 0; | ||
775 | |||
776 | if ( file->f_mode & FMODE_READ ) { | ||
777 | poll_wait( file, &iep->wait, wait ); | ||
778 | spin_lock_irqsave( &iep->lock, flags ); | ||
779 | if ( m->min.bufRemains > 0 ) | ||
780 | mask |= POLLIN | POLLRDNORM; | ||
781 | spin_unlock_irqrestore( &iep->lock, flags ); | ||
782 | } | ||
783 | |||
784 | if ( file->f_mode & FMODE_WRITE ) { | ||
785 | poll_wait( file, &oep->wait, wait ); | ||
786 | spin_lock_irqsave( &oep->lock, flags ); | ||
787 | if ( oep->bufWrPtr < oep->bufSize ) | ||
788 | mask |= POLLOUT | POLLWRNORM; | ||
789 | spin_unlock_irqrestore( &oep->lock, flags ); | ||
790 | } | ||
791 | |||
792 | return mask; | ||
793 | } | ||
794 | |||
795 | |||
796 | /** Basic operation on /dev/midiXX as registered through struct file_operations. | ||
797 | * | ||
798 | * Basic contract: This is always the first operation performed on the | ||
799 | * device node. If no method is defined, the open succeeds without any | ||
800 | * notification given to the module. | ||
801 | * | ||
802 | **/ | ||
803 | |||
804 | static int usb_midi_open(struct inode *inode, struct file *file) | ||
805 | { | ||
806 | int minor = iminor(inode); | ||
807 | DECLARE_WAITQUEUE(wait, current); | ||
808 | struct usb_midi_state *s; | ||
809 | struct usb_mididev *m; | ||
810 | unsigned long flags; | ||
811 | int succeed = 0; | ||
812 | |||
813 | #if 0 | ||
814 | printk(KERN_INFO "usb-midi: Open minor= %d.\n", minor); | ||
815 | #endif | ||
816 | |||
817 | for(;;) { | ||
818 | down(&open_sem); | ||
819 | list_for_each_entry(s, &mididevs, mididev) { | ||
820 | list_for_each_entry(m, &s->midiDevList, list) { | ||
821 | if ( !((m->dev_midi ^ minor) & ~0xf) ) | ||
822 | goto device_found; | ||
823 | } | ||
824 | } | ||
825 | up(&open_sem); | ||
826 | return -ENODEV; | ||
827 | |||
828 | device_found: | ||
829 | if ( !s->usbdev ) { | ||
830 | up(&open_sem); | ||
831 | return -EIO; | ||
832 | } | ||
833 | if ( !(m->open_mode & file->f_mode) ) { | ||
834 | break; | ||
835 | } | ||
836 | if ( file->f_flags & O_NONBLOCK ) { | ||
837 | up(&open_sem); | ||
838 | return -EBUSY; | ||
839 | } | ||
840 | __set_current_state(TASK_INTERRUPTIBLE); | ||
841 | add_wait_queue( &open_wait, &wait ); | ||
842 | up(&open_sem); | ||
843 | schedule(); | ||
844 | remove_wait_queue( &open_wait, &wait ); | ||
845 | if ( signal_pending(current) ) { | ||
846 | return -ERESTARTSYS; | ||
847 | } | ||
848 | } | ||
849 | |||
850 | file->private_data = m; | ||
851 | spin_lock_irqsave( &s->lock, flags ); | ||
852 | |||
853 | if ( !(m->open_mode & (FMODE_READ | FMODE_WRITE)) ) { | ||
854 | //FIXME: intented semantics unclear here | ||
855 | m->min.bufRdPtr = 0; | ||
856 | m->min.bufWrPtr = 0; | ||
857 | m->min.bufRemains = 0; | ||
858 | spin_lock_init(&m->min.ep->lock); | ||
859 | |||
860 | m->mout.bufPtr = 0; | ||
861 | m->mout.bufRemains = 0; | ||
862 | m->mout.isInExclusive = 0; | ||
863 | m->mout.lastEvent = 0; | ||
864 | spin_lock_init(&m->mout.ep->lock); | ||
865 | } | ||
866 | |||
867 | if ( (file->f_mode & FMODE_READ) && m->min.ep != NULL ) { | ||
868 | unsigned long int flagsep; | ||
869 | spin_lock_irqsave( &m->min.ep->lock, flagsep ); | ||
870 | m->min.ep->cables[m->min.cableId] = m; | ||
871 | m->min.ep->readers += 1; | ||
872 | m->min.bufRdPtr = 0; | ||
873 | m->min.bufWrPtr = 0; | ||
874 | m->min.bufRemains = 0; | ||
875 | spin_unlock_irqrestore( &m->min.ep->lock, flagsep ); | ||
876 | |||
877 | if ( !(m->min.ep->urbSubmitted)) { | ||
878 | |||
879 | /* urb->dev must be reinitialized on 2.4.x kernels */ | ||
880 | m->min.ep->urb->dev = m->min.ep->usbdev; | ||
881 | |||
882 | if ( usb_submit_urb(m->min.ep->urb, GFP_ATOMIC) ) { | ||
883 | printk(KERN_ERR "usbmidi: Cannot submit urb for MIDI-IN\n"); | ||
884 | } | ||
885 | m->min.ep->urbSubmitted = 1; | ||
886 | } | ||
887 | m->open_mode |= FMODE_READ; | ||
888 | succeed = 1; | ||
889 | } | ||
890 | |||
891 | if ( (file->f_mode & FMODE_WRITE) && m->mout.ep != NULL ) { | ||
892 | m->mout.bufPtr = 0; | ||
893 | m->mout.bufRemains = 0; | ||
894 | m->mout.isInExclusive = 0; | ||
895 | m->mout.lastEvent = 0; | ||
896 | m->open_mode |= FMODE_WRITE; | ||
897 | succeed = 1; | ||
898 | } | ||
899 | |||
900 | spin_unlock_irqrestore( &s->lock, flags ); | ||
901 | |||
902 | s->count++; | ||
903 | up(&open_sem); | ||
904 | |||
905 | /** Changed to prevent extra increments to USE_COUNT. **/ | ||
906 | if (!succeed) { | ||
907 | return -EBUSY; | ||
908 | } | ||
909 | |||
910 | #if 0 | ||
911 | printk(KERN_INFO "usb-midi: Open Succeeded. minor= %d.\n", minor); | ||
912 | #endif | ||
913 | |||
914 | return nonseekable_open(inode, file); /** Success. **/ | ||
915 | } | ||
916 | |||
917 | |||
918 | /** Basic operation on /dev/midiXX as registered through struct file_operations. | ||
919 | * | ||
920 | * Basic contract: Close an opened file and deallocate anything we allocated. | ||
921 | * Like open(), this can be missing. If open set file->private_data, | ||
922 | * release() must clear it. | ||
923 | * | ||
924 | **/ | ||
925 | |||
926 | static int usb_midi_release(struct inode *inode, struct file *file) | ||
927 | { | ||
928 | struct usb_mididev *m = (struct usb_mididev *)file->private_data; | ||
929 | struct usb_midi_state *s = (struct usb_midi_state *)m->midi; | ||
930 | |||
931 | #if 0 | ||
932 | printk(KERN_INFO "usb-midi: Close.\n"); | ||
933 | #endif | ||
934 | |||
935 | down(&open_sem); | ||
936 | |||
937 | if ( m->open_mode & FMODE_WRITE ) { | ||
938 | m->open_mode &= ~FMODE_WRITE; | ||
939 | usb_kill_urb( m->mout.ep->urb ); | ||
940 | } | ||
941 | |||
942 | if ( m->open_mode & FMODE_READ ) { | ||
943 | unsigned long int flagsep; | ||
944 | spin_lock_irqsave( &m->min.ep->lock, flagsep ); | ||
945 | m->min.ep->cables[m->min.cableId] = NULL; // discard cable | ||
946 | m->min.ep->readers -= 1; | ||
947 | m->open_mode &= ~FMODE_READ; | ||
948 | if ( m->min.ep->readers == 0 && | ||
949 | m->min.ep->urbSubmitted ) { | ||
950 | m->min.ep->urbSubmitted = 0; | ||
951 | usb_kill_urb(m->min.ep->urb); | ||
952 | } | ||
953 | spin_unlock_irqrestore( &m->min.ep->lock, flagsep ); | ||
954 | } | ||
955 | |||
956 | s->count--; | ||
957 | |||
958 | up(&open_sem); | ||
959 | wake_up(&open_wait); | ||
960 | |||
961 | file->private_data = NULL; | ||
962 | return 0; | ||
963 | } | ||
964 | |||
965 | static struct file_operations usb_midi_fops = { | ||
966 | .owner = THIS_MODULE, | ||
967 | .llseek = usb_midi_llseek, | ||
968 | .read = usb_midi_read, | ||
969 | .write = usb_midi_write, | ||
970 | .poll = usb_midi_poll, | ||
971 | .open = usb_midi_open, | ||
972 | .release = usb_midi_release, | ||
973 | }; | ||
974 | |||
975 | /* ------------------------------------------------------------------------- */ | ||
976 | |||
977 | /** Returns filled midi_in_endpoint structure or null on failure. | ||
978 | * | ||
979 | * Parameters: | ||
980 | * d - a usb_device | ||
981 | * endPoint - An usb endpoint in the range 0 to 15. | ||
982 | * Called by allocUsbMidiDev(); | ||
983 | * | ||
984 | **/ | ||
985 | |||
986 | static struct midi_in_endpoint *alloc_midi_in_endpoint( struct usb_device *d, int endPoint ) | ||
987 | { | ||
988 | struct midi_in_endpoint *ep; | ||
989 | int bufSize; | ||
990 | int pipe; | ||
991 | |||
992 | endPoint &= 0x0f; /* Silently force endPoint to lie in range 0 to 15. */ | ||
993 | |||
994 | pipe = usb_rcvbulkpipe( d, endPoint ); | ||
995 | bufSize = usb_maxpacket( d, pipe, 0 ); | ||
996 | /* usb_pipein() = ! usb_pipeout() = true for an in Endpoint */ | ||
997 | |||
998 | ep = (struct midi_in_endpoint *)kmalloc(sizeof(struct midi_in_endpoint), GFP_KERNEL); | ||
999 | if ( !ep ) { | ||
1000 | printk(KERN_ERR "usbmidi: no memory for midi in-endpoint\n"); | ||
1001 | return NULL; | ||
1002 | } | ||
1003 | memset( ep, 0, sizeof(struct midi_in_endpoint) ); | ||
1004 | // this sets cables[] and readers to 0, too. | ||
1005 | // for (i=0; i<16; i++) ep->cables[i] = 0; // discard cable | ||
1006 | // ep->readers = 0; | ||
1007 | |||
1008 | ep->endpoint = endPoint; | ||
1009 | |||
1010 | ep->recvBuf = (unsigned char *)kmalloc(sizeof(unsigned char)*(bufSize), GFP_KERNEL); | ||
1011 | if ( !ep->recvBuf ) { | ||
1012 | printk(KERN_ERR "usbmidi: no memory for midi in-endpoint buffer\n"); | ||
1013 | kfree(ep); | ||
1014 | return NULL; | ||
1015 | } | ||
1016 | |||
1017 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */ | ||
1018 | if ( !ep->urb ) { | ||
1019 | printk(KERN_ERR "usbmidi: no memory for midi in-endpoint urb\n"); | ||
1020 | kfree(ep->recvBuf); | ||
1021 | kfree(ep); | ||
1022 | return NULL; | ||
1023 | } | ||
1024 | usb_fill_bulk_urb( ep->urb, d, | ||
1025 | usb_rcvbulkpipe(d, endPoint), | ||
1026 | (unsigned char *)ep->recvBuf, bufSize, | ||
1027 | usb_bulk_read, ep ); | ||
1028 | |||
1029 | /* ep->bufRdPtr = 0; */ | ||
1030 | /* ep->bufWrPtr = 0; */ | ||
1031 | /* ep->bufRemains = 0; */ | ||
1032 | /* ep->urbSubmitted = 0; */ | ||
1033 | ep->recvBufSize = bufSize; | ||
1034 | |||
1035 | init_waitqueue_head(&ep->wait); | ||
1036 | |||
1037 | return ep; | ||
1038 | } | ||
1039 | |||
1040 | static int remove_midi_in_endpoint( struct midi_in_endpoint *min ) | ||
1041 | { | ||
1042 | usb_kill_urb( min->urb ); | ||
1043 | usb_free_urb( min->urb ); | ||
1044 | kfree( min->recvBuf ); | ||
1045 | kfree( min ); | ||
1046 | |||
1047 | return 0; | ||
1048 | } | ||
1049 | |||
1050 | /** Returns filled midi_out_endpoint structure or null on failure. | ||
1051 | * | ||
1052 | * Parameters: | ||
1053 | * d - a usb_device | ||
1054 | * endPoint - An usb endpoint in the range 0 to 15. | ||
1055 | * Called by allocUsbMidiDev(); | ||
1056 | * | ||
1057 | **/ | ||
1058 | static struct midi_out_endpoint *alloc_midi_out_endpoint( struct usb_device *d, int endPoint ) | ||
1059 | { | ||
1060 | struct midi_out_endpoint *ep = NULL; | ||
1061 | int pipe; | ||
1062 | int bufSize; | ||
1063 | |||
1064 | endPoint &= 0x0f; | ||
1065 | pipe = usb_sndbulkpipe( d, endPoint ); | ||
1066 | bufSize = usb_maxpacket( d, pipe, 1 ); | ||
1067 | |||
1068 | ep = (struct midi_out_endpoint *)kmalloc(sizeof(struct midi_out_endpoint), GFP_KERNEL); | ||
1069 | if ( !ep ) { | ||
1070 | printk(KERN_ERR "usbmidi: no memory for midi out-endpoint\n"); | ||
1071 | return NULL; | ||
1072 | } | ||
1073 | memset( ep, 0, sizeof(struct midi_out_endpoint) ); | ||
1074 | |||
1075 | ep->endpoint = endPoint; | ||
1076 | ep->buf = (unsigned char *)kmalloc(sizeof(unsigned char)*bufSize, GFP_KERNEL); | ||
1077 | if ( !ep->buf ) { | ||
1078 | printk(KERN_ERR "usbmidi: no memory for midi out-endpoint buffer\n"); | ||
1079 | kfree(ep); | ||
1080 | return NULL; | ||
1081 | } | ||
1082 | |||
1083 | ep->urb = usb_alloc_urb(0, GFP_KERNEL); /* no ISO */ | ||
1084 | if ( !ep->urb ) { | ||
1085 | printk(KERN_ERR "usbmidi: no memory for midi out-endpoint urb\n"); | ||
1086 | kfree(ep->buf); | ||
1087 | kfree(ep); | ||
1088 | return NULL; | ||
1089 | } | ||
1090 | |||
1091 | ep->bufSize = bufSize; | ||
1092 | /* ep->bufWrPtr = 0; */ | ||
1093 | |||
1094 | init_waitqueue_head(&ep->wait); | ||
1095 | |||
1096 | return ep; | ||
1097 | } | ||
1098 | |||
1099 | |||
1100 | static int remove_midi_out_endpoint( struct midi_out_endpoint *mout ) | ||
1101 | { | ||
1102 | usb_kill_urb( mout->urb ); | ||
1103 | usb_free_urb( mout->urb ); | ||
1104 | kfree( mout->buf ); | ||
1105 | kfree( mout ); | ||
1106 | |||
1107 | return 0; | ||
1108 | } | ||
1109 | |||
1110 | |||
1111 | /** Returns a filled usb_mididev structure, registered as a Linux MIDI device. | ||
1112 | * | ||
1113 | * Returns null if memory is not available or the device cannot be registered. | ||
1114 | * Called by allocUsbMidiDev(); | ||
1115 | * | ||
1116 | **/ | ||
1117 | static struct usb_mididev *allocMidiDev( | ||
1118 | struct usb_midi_state *s, | ||
1119 | struct midi_in_endpoint *min, | ||
1120 | struct midi_out_endpoint *mout, | ||
1121 | int inCableId, | ||
1122 | int outCableId ) | ||
1123 | { | ||
1124 | struct usb_mididev *m; | ||
1125 | |||
1126 | m = (struct usb_mididev *)kmalloc(sizeof(struct usb_mididev), GFP_KERNEL); | ||
1127 | if (!m) { | ||
1128 | printk(KERN_ERR "usbmidi: no memory for midi device\n"); | ||
1129 | return NULL; | ||
1130 | } | ||
1131 | |||
1132 | memset(m, 0, sizeof(struct usb_mididev)); | ||
1133 | |||
1134 | if ((m->dev_midi = register_sound_midi(&usb_midi_fops, -1)) < 0) { | ||
1135 | printk(KERN_ERR "usbmidi: cannot register midi device\n"); | ||
1136 | kfree(m); | ||
1137 | return NULL; | ||
1138 | } | ||
1139 | |||
1140 | m->midi = s; | ||
1141 | /* m->open_mode = 0; */ | ||
1142 | |||
1143 | if ( min ) { | ||
1144 | m->min.ep = min; | ||
1145 | m->min.ep->usbdev = s->usbdev; | ||
1146 | m->min.cableId = inCableId; | ||
1147 | } | ||
1148 | /* m->min.bufPtr = 0; */ | ||
1149 | /* m->min.bufRemains = 0; */ | ||
1150 | |||
1151 | if ( mout ) { | ||
1152 | m->mout.ep = mout; | ||
1153 | m->mout.ep->usbdev = s->usbdev; | ||
1154 | m->mout.cableId = outCableId; | ||
1155 | } | ||
1156 | /* m->mout.bufPtr = 0; */ | ||
1157 | /* m->mout.bufRemains = 0; */ | ||
1158 | /* m->mout.isInExclusive = 0; */ | ||
1159 | /* m->mout.lastEvent = 0; */ | ||
1160 | |||
1161 | m->singlebyte = singlebyte; | ||
1162 | |||
1163 | return m; | ||
1164 | } | ||
1165 | |||
1166 | |||
1167 | static void release_midi_device( struct usb_midi_state *s ) | ||
1168 | { | ||
1169 | struct usb_mididev *m; | ||
1170 | struct midi_in_endpoint *min; | ||
1171 | struct midi_out_endpoint *mout; | ||
1172 | |||
1173 | if ( s->count > 0 ) { | ||
1174 | up(&open_sem); | ||
1175 | return; | ||
1176 | } | ||
1177 | up( &open_sem ); | ||
1178 | wake_up( &open_wait ); | ||
1179 | |||
1180 | while(!list_empty(&s->inEndpointList)) { | ||
1181 | min = list_entry(s->inEndpointList.next, struct midi_in_endpoint, list); | ||
1182 | list_del(&min->list); | ||
1183 | remove_midi_in_endpoint(min); | ||
1184 | } | ||
1185 | |||
1186 | while(!list_empty(&s->outEndpointList)) { | ||
1187 | mout = list_entry(s->outEndpointList.next, struct midi_out_endpoint, list); | ||
1188 | list_del(&mout->list); | ||
1189 | remove_midi_out_endpoint(mout); | ||
1190 | } | ||
1191 | |||
1192 | while(!list_empty(&s->midiDevList)) { | ||
1193 | m = list_entry(s->midiDevList.next, struct usb_mididev, list); | ||
1194 | list_del(&m->list); | ||
1195 | kfree(m); | ||
1196 | } | ||
1197 | |||
1198 | kfree(s); | ||
1199 | |||
1200 | return; | ||
1201 | } | ||
1202 | |||
1203 | |||
1204 | /* ------------------------------------------------------------------------- */ | ||
1205 | |||
1206 | /** Utility routine to find a descriptor in a dump of many descriptors. | ||
1207 | * Returns start of descriptor or NULL if not found. | ||
1208 | * descStart pointer to list of interfaces. | ||
1209 | * descLength length (in bytes) of dump | ||
1210 | * after (ignored if NULL) this routine returns only descriptors after "after" | ||
1211 | * dtype (mandatory) The descriptor type. | ||
1212 | * iface (ignored if -1) returns descriptor at/following given interface | ||
1213 | * altSetting (ignored if -1) returns descriptor at/following given altSetting | ||
1214 | * | ||
1215 | * | ||
1216 | * Called by parseDescriptor(), find_csinterface_descriptor(); | ||
1217 | * | ||
1218 | */ | ||
1219 | static void *find_descriptor( void *descStart, unsigned int descLength, void *after, unsigned char dtype, int iface, int altSetting ) | ||
1220 | { | ||
1221 | unsigned char *p, *end, *next; | ||
1222 | int interfaceNumber = -1, altSet = -1; | ||
1223 | |||
1224 | p = descStart; | ||
1225 | end = p + descLength; | ||
1226 | for( ; p < end; ) { | ||
1227 | if ( p[0] < 2 ) | ||
1228 | return NULL; | ||
1229 | next = p + p[0]; | ||
1230 | if ( next > end ) | ||
1231 | return NULL; | ||
1232 | if ( p[1] == USB_DT_INTERFACE ) { | ||
1233 | if ( p[0] < USB_DT_INTERFACE_SIZE ) | ||
1234 | return NULL; | ||
1235 | interfaceNumber = p[2]; | ||
1236 | altSet = p[3]; | ||
1237 | } | ||
1238 | if ( p[1] == dtype && | ||
1239 | ( !after || ( p > (unsigned char *)after) ) && | ||
1240 | ( ( iface == -1) || (iface == interfaceNumber) ) && | ||
1241 | ( (altSetting == -1) || (altSetting == altSet) )) { | ||
1242 | return p; | ||
1243 | } | ||
1244 | p = next; | ||
1245 | } | ||
1246 | return NULL; | ||
1247 | } | ||
1248 | |||
1249 | /** Utility to find a class-specific interface descriptor. | ||
1250 | * dsubtype is a descriptor subtype | ||
1251 | * Called by parseDescriptor(); | ||
1252 | **/ | ||
1253 | static void *find_csinterface_descriptor(void *descStart, unsigned int descLength, void *after, u8 dsubtype, int iface, int altSetting) | ||
1254 | { | ||
1255 | unsigned char *p; | ||
1256 | |||
1257 | p = find_descriptor( descStart, descLength, after, USB_DT_CS_INTERFACE, iface, altSetting ); | ||
1258 | while ( p ) { | ||
1259 | if ( p[0] >= 3 && p[2] == dsubtype ) | ||
1260 | return p; | ||
1261 | p = find_descriptor( descStart, descLength, p, USB_DT_CS_INTERFACE, | ||
1262 | iface, altSetting ); | ||
1263 | } | ||
1264 | return NULL; | ||
1265 | } | ||
1266 | |||
1267 | |||
1268 | /** The magic of making a new usb_midi_device from config happens here. | ||
1269 | * | ||
1270 | * The caller is responsible for free-ing this return value (if not NULL). | ||
1271 | * | ||
1272 | **/ | ||
1273 | static struct usb_midi_device *parse_descriptor( struct usb_device *d, unsigned char *buffer, int bufSize, unsigned int ifnum , unsigned int altSetting, int quirks) | ||
1274 | { | ||
1275 | struct usb_midi_device *u; | ||
1276 | unsigned char *p1; | ||
1277 | unsigned char *p2; | ||
1278 | unsigned char *next; | ||
1279 | int iep, oep; | ||
1280 | int length; | ||
1281 | unsigned long longBits; | ||
1282 | int pins, nbytes, offset, shift, jack; | ||
1283 | #ifdef HAVE_JACK_STRINGS | ||
1284 | /** Jacks can have associated names. **/ | ||
1285 | unsigned char jack2string[256]; | ||
1286 | #endif | ||
1287 | |||
1288 | u = NULL; | ||
1289 | /* find audiocontrol interface */ | ||
1290 | p1 = find_csinterface_descriptor( buffer, bufSize, NULL, | ||
1291 | MS_HEADER, ifnum, altSetting); | ||
1292 | |||
1293 | if ( !p1 ) { | ||
1294 | goto error_end; | ||
1295 | } | ||
1296 | |||
1297 | if ( p1[0] < MS_HEADER_LENGTH ) { | ||
1298 | goto error_end; | ||
1299 | } | ||
1300 | |||
1301 | /* Assume success. Since the device corresponds to USB-MIDI spec, we assume | ||
1302 | that the rest of the USB 2.0 spec is obeyed. */ | ||
1303 | |||
1304 | u = (struct usb_midi_device *)kmalloc( sizeof(struct usb_midi_device), GFP_KERNEL ); | ||
1305 | if ( !u ) { | ||
1306 | return NULL; | ||
1307 | } | ||
1308 | u->deviceName = NULL; | ||
1309 | u->idVendor = le16_to_cpu(d->descriptor.idVendor); | ||
1310 | u->idProduct = le16_to_cpu(d->descriptor.idProduct); | ||
1311 | u->interface = ifnum; | ||
1312 | u->altSetting = altSetting; | ||
1313 | u->in[0].endpoint = -1; | ||
1314 | u->in[0].cableId = -1; | ||
1315 | u->out[0].endpoint = -1; | ||
1316 | u->out[0].cableId = -1; | ||
1317 | |||
1318 | |||
1319 | printk(KERN_INFO "usb-midi: Found MIDIStreaming device corresponding to Release %d.%02d of spec.\n", | ||
1320 | (p1[4] >> 4) * 10 + (p1[4] & 0x0f ), | ||
1321 | (p1[3] >> 4) * 10 + (p1[3] & 0x0f ) | ||
1322 | ); | ||
1323 | |||
1324 | length = p1[5] | (p1[6] << 8); | ||
1325 | |||
1326 | #ifdef HAVE_JACK_STRINGS | ||
1327 | memset(jack2string, 0, sizeof(unsigned char) * 256); | ||
1328 | #endif | ||
1329 | |||
1330 | length -= p1[0]; | ||
1331 | for (p2 = p1 + p1[0]; length > 0; p2 = next) { | ||
1332 | next = p2 + p2[0]; | ||
1333 | length -= p2[0]; | ||
1334 | |||
1335 | if (p2[0] < 2 ) | ||
1336 | break; | ||
1337 | if (p2[1] != USB_DT_CS_INTERFACE) | ||
1338 | break; | ||
1339 | if (p2[2] == MIDI_IN_JACK && p2[0] >= 6 ) { | ||
1340 | jack = p2[4]; | ||
1341 | #ifdef HAVE_JACK_STRINGS | ||
1342 | jack2string[jack] = p2[5]; | ||
1343 | #endif | ||
1344 | printk(KERN_INFO "usb-midi: Found IN Jack 0x%02x %s\n", | ||
1345 | jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL" ); | ||
1346 | } else if ( p2[2] == MIDI_OUT_JACK && p2[0] >= 6) { | ||
1347 | pins = p2[5]; | ||
1348 | if ( p2[0] < (6 + 2 * pins) ) | ||
1349 | continue; | ||
1350 | jack = p2[4]; | ||
1351 | #ifdef HAVE_JACK_STRINGS | ||
1352 | jack2string[jack] = p2[5 + 2 * pins]; | ||
1353 | #endif | ||
1354 | printk(KERN_INFO "usb-midi: Found OUT Jack 0x%02x %s, %d pins\n", | ||
1355 | jack, (p2[3] == EMBEDDED_JACK)?"EMBEDDED":"EXTERNAL", pins ); | ||
1356 | } else if ( p2[2] == ELEMENT_DESCRIPTOR && p2[0] >= 10) { | ||
1357 | pins = p2[4]; | ||
1358 | if ( p2[0] < (9 + 2 * pins ) ) | ||
1359 | continue; | ||
1360 | nbytes = p2[8 + 2 * pins ]; | ||
1361 | if ( p2[0] < (10 + 2 * pins + nbytes) ) | ||
1362 | continue; | ||
1363 | longBits = 0L; | ||
1364 | for ( offset = 0, shift = 0; offset < nbytes && offset < 8; offset ++, shift += 8) { | ||
1365 | longBits |= ((long)(p2[9 + 2 * pins + offset])) << shift; | ||
1366 | } | ||
1367 | jack = p2[3]; | ||
1368 | #ifdef HAVE_JACK_STRINGS | ||
1369 | jack2string[jack] = p2[9 + 2 * pins + nbytes]; | ||
1370 | #endif | ||
1371 | printk(KERN_INFO "usb-midi: Found ELEMENT 0x%02x, %d/%d pins in/out, bits: 0x%016lx\n", | ||
1372 | jack, pins, (int)(p2[5 + 2 * pins]), (long)longBits ); | ||
1373 | } else { | ||
1374 | } | ||
1375 | } | ||
1376 | |||
1377 | iep=0; | ||
1378 | oep=0; | ||
1379 | |||
1380 | if (quirks==0) { | ||
1381 | /* MIDISTREAM */ | ||
1382 | p2 = NULL; | ||
1383 | for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT, | ||
1384 | ifnum, altSetting ); p1; p1 = next ) { | ||
1385 | next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT, | ||
1386 | ifnum, altSetting ); | ||
1387 | p2 = find_descriptor(buffer, bufSize, p1, USB_DT_CS_ENDPOINT, | ||
1388 | ifnum, altSetting ); | ||
1389 | |||
1390 | if ( p2 && next && ( p2 > next ) ) | ||
1391 | p2 = NULL; | ||
1392 | |||
1393 | if ( p1[0] < 9 || !p2 || p2[0] < 4 ) | ||
1394 | continue; | ||
1395 | |||
1396 | if ( (p1[2] & 0x80) == 0x80 ) { | ||
1397 | if ( iep < 15 ) { | ||
1398 | pins = p2[3]; /* not pins -- actually "cables" */ | ||
1399 | if ( pins > 16 ) | ||
1400 | pins = 16; | ||
1401 | u->in[iep].endpoint = p1[2]; | ||
1402 | u->in[iep].cableId = ( 1 << pins ) - 1; | ||
1403 | if ( u->in[iep].cableId ) | ||
1404 | iep ++; | ||
1405 | if ( iep < 15 ) { | ||
1406 | u->in[iep].endpoint = -1; | ||
1407 | u->in[iep].cableId = -1; | ||
1408 | } | ||
1409 | } | ||
1410 | } else { | ||
1411 | if ( oep < 15 ) { | ||
1412 | pins = p2[3]; /* not pins -- actually "cables" */ | ||
1413 | if ( pins > 16 ) | ||
1414 | pins = 16; | ||
1415 | u->out[oep].endpoint = p1[2]; | ||
1416 | u->out[oep].cableId = ( 1 << pins ) - 1; | ||
1417 | if ( u->out[oep].cableId ) | ||
1418 | oep ++; | ||
1419 | if ( oep < 15 ) { | ||
1420 | u->out[oep].endpoint = -1; | ||
1421 | u->out[oep].cableId = -1; | ||
1422 | } | ||
1423 | } | ||
1424 | } | ||
1425 | |||
1426 | } | ||
1427 | } else if (quirks==1) { | ||
1428 | /* YAMAHA quirks */ | ||
1429 | for (p1 = find_descriptor(buffer, bufSize, NULL, USB_DT_ENDPOINT, | ||
1430 | ifnum, altSetting ); p1; p1 = next ) { | ||
1431 | next = find_descriptor(buffer, bufSize, p1, USB_DT_ENDPOINT, | ||
1432 | ifnum, altSetting ); | ||
1433 | |||
1434 | if ( p1[0] < 7 ) | ||
1435 | continue; | ||
1436 | |||
1437 | if ( (p1[2] & 0x80) == 0x80 ) { | ||
1438 | if ( iep < 15 ) { | ||
1439 | pins = iep+1; | ||
1440 | if ( pins > 16 ) | ||
1441 | pins = 16; | ||
1442 | u->in[iep].endpoint = p1[2]; | ||
1443 | u->in[iep].cableId = ( 1 << pins ) - 1; | ||
1444 | if ( u->in[iep].cableId ) | ||
1445 | iep ++; | ||
1446 | if ( iep < 15 ) { | ||
1447 | u->in[iep].endpoint = -1; | ||
1448 | u->in[iep].cableId = -1; | ||
1449 | } | ||
1450 | } | ||
1451 | } else { | ||
1452 | if ( oep < 15 ) { | ||
1453 | pins = oep+1; | ||
1454 | u->out[oep].endpoint = p1[2]; | ||
1455 | u->out[oep].cableId = ( 1 << pins ) - 1; | ||
1456 | if ( u->out[oep].cableId ) | ||
1457 | oep ++; | ||
1458 | if ( oep < 15 ) { | ||
1459 | u->out[oep].endpoint = -1; | ||
1460 | u->out[oep].cableId = -1; | ||
1461 | } | ||
1462 | } | ||
1463 | } | ||
1464 | |||
1465 | } | ||
1466 | } | ||
1467 | |||
1468 | if ( !iep && ! oep ) { | ||
1469 | goto error_end; | ||
1470 | } | ||
1471 | |||
1472 | return u; | ||
1473 | |||
1474 | error_end: | ||
1475 | kfree(u); | ||
1476 | return NULL; | ||
1477 | } | ||
1478 | |||
1479 | /* ------------------------------------------------------------------------- */ | ||
1480 | |||
1481 | /** Returns number between 0 and 16. | ||
1482 | * | ||
1483 | **/ | ||
1484 | static int on_bits( unsigned short v ) | ||
1485 | { | ||
1486 | int i; | ||
1487 | int ret=0; | ||
1488 | |||
1489 | for ( i=0 ; i<16 ; i++ ) { | ||
1490 | if ( v & (1<<i) ) | ||
1491 | ret++; | ||
1492 | } | ||
1493 | |||
1494 | return ret; | ||
1495 | } | ||
1496 | |||
1497 | |||
1498 | /** USB-device will be interrogated for altSetting. | ||
1499 | * | ||
1500 | * Returns negative on error. | ||
1501 | * Called by allocUsbMidiDev(); | ||
1502 | * | ||
1503 | **/ | ||
1504 | |||
1505 | static int get_alt_setting( struct usb_device *d, int ifnum ) | ||
1506 | { | ||
1507 | int alts, alt=0; | ||
1508 | struct usb_interface *iface; | ||
1509 | struct usb_host_interface *interface; | ||
1510 | struct usb_endpoint_descriptor *ep; | ||
1511 | int epin, epout; | ||
1512 | int i; | ||
1513 | |||
1514 | iface = usb_ifnum_to_if( d, ifnum ); | ||
1515 | alts = iface->num_altsetting; | ||
1516 | |||
1517 | for ( alt=0 ; alt<alts ; alt++ ) { | ||
1518 | interface = &iface->altsetting[alt]; | ||
1519 | epin = -1; | ||
1520 | epout = -1; | ||
1521 | |||
1522 | for ( i=0 ; i<interface->desc.bNumEndpoints ; i++ ) { | ||
1523 | ep = &interface->endpoint[i].desc; | ||
1524 | if ( (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ) { | ||
1525 | continue; | ||
1526 | } | ||
1527 | if ( (ep->bEndpointAddress & USB_DIR_IN) && epin < 0 ) { | ||
1528 | epin = i; | ||
1529 | } else if ( epout < 0 ) { | ||
1530 | epout = i; | ||
1531 | } | ||
1532 | if ( epin >= 0 && epout >= 0 ) { | ||
1533 | return interface->desc.bAlternateSetting; | ||
1534 | } | ||
1535 | } | ||
1536 | } | ||
1537 | |||
1538 | return -ENODEV; | ||
1539 | } | ||
1540 | |||
1541 | |||
1542 | /* ------------------------------------------------------------------------- */ | ||
1543 | |||
1544 | |||
1545 | /** Returns 0 if successful in allocating and registering internal structures. | ||
1546 | * Returns negative on failure. | ||
1547 | * Calls allocMidiDev which additionally registers /dev/midiXX devices. | ||
1548 | * Writes messages on success to indicate which /dev/midiXX is which physical | ||
1549 | * endpoint. | ||
1550 | * | ||
1551 | **/ | ||
1552 | static int alloc_usb_midi_device( struct usb_device *d, struct usb_midi_state *s, struct usb_midi_device *u ) | ||
1553 | { | ||
1554 | struct usb_mididev **mdevs=NULL; | ||
1555 | struct midi_in_endpoint *mins[15], *min; | ||
1556 | struct midi_out_endpoint *mouts[15], *mout; | ||
1557 | int inDevs=0, outDevs=0; | ||
1558 | int inEndpoints=0, outEndpoints=0; | ||
1559 | int inEndpoint, outEndpoint; | ||
1560 | int inCableId, outCableId; | ||
1561 | int i; | ||
1562 | int devices = 0; | ||
1563 | int alt = 0; | ||
1564 | |||
1565 | /* Obtain altSetting or die.. */ | ||
1566 | alt = u->altSetting; | ||
1567 | if ( alt < 0 ) { | ||
1568 | alt = get_alt_setting( d, u->interface ); | ||
1569 | } | ||
1570 | if ( alt < 0 ) | ||
1571 | return -ENXIO; | ||
1572 | |||
1573 | /* Configure interface */ | ||
1574 | if ( usb_set_interface( d, u->interface, alt ) < 0 ) { | ||
1575 | return -ENXIO; | ||
1576 | } | ||
1577 | |||
1578 | for ( i = 0 ; i < 15 ; i++ ) { | ||
1579 | mins[i] = NULL; | ||
1580 | mouts[i] = NULL; | ||
1581 | } | ||
1582 | |||
1583 | /* Begin Allocation */ | ||
1584 | while( inEndpoints < 15 | ||
1585 | && inDevs < maxdevices | ||
1586 | && u->in[inEndpoints].cableId >= 0 ) { | ||
1587 | inDevs += on_bits((unsigned short)u->in[inEndpoints].cableId); | ||
1588 | mins[inEndpoints] = alloc_midi_in_endpoint( d, u->in[inEndpoints].endpoint ); | ||
1589 | if ( mins[inEndpoints] == NULL ) | ||
1590 | goto error_end; | ||
1591 | inEndpoints++; | ||
1592 | } | ||
1593 | |||
1594 | while( outEndpoints < 15 | ||
1595 | && outDevs < maxdevices | ||
1596 | && u->out[outEndpoints].cableId >= 0 ) { | ||
1597 | outDevs += on_bits((unsigned short)u->out[outEndpoints].cableId); | ||
1598 | mouts[outEndpoints] = alloc_midi_out_endpoint( d, u->out[outEndpoints].endpoint ); | ||
1599 | if ( mouts[outEndpoints] == NULL ) | ||
1600 | goto error_end; | ||
1601 | outEndpoints++; | ||
1602 | } | ||
1603 | |||
1604 | devices = inDevs > outDevs ? inDevs : outDevs; | ||
1605 | devices = maxdevices > devices ? devices : maxdevices; | ||
1606 | |||
1607 | /* obtain space for device name (iProduct) if not known. */ | ||
1608 | if ( ! u->deviceName ) { | ||
1609 | mdevs = (struct usb_mididev **) | ||
1610 | kmalloc(sizeof(struct usb_mididevs *)*devices | ||
1611 | + sizeof(char) * 256, GFP_KERNEL); | ||
1612 | } else { | ||
1613 | mdevs = (struct usb_mididev **) | ||
1614 | kmalloc(sizeof(struct usb_mididevs *)*devices, GFP_KERNEL); | ||
1615 | } | ||
1616 | |||
1617 | if ( !mdevs ) { | ||
1618 | /* devices = 0; */ | ||
1619 | /* mdevs = NULL; */ | ||
1620 | goto error_end; | ||
1621 | } | ||
1622 | for ( i=0 ; i<devices ; i++ ) { | ||
1623 | mdevs[i] = NULL; | ||
1624 | } | ||
1625 | |||
1626 | /* obtain device name (iProduct) if not known. */ | ||
1627 | if ( ! u->deviceName ) { | ||
1628 | u->deviceName = (char *) (mdevs + devices); | ||
1629 | if ( ! d->have_langid && d->descriptor.iProduct) { | ||
1630 | alt = usb_get_string(d, 0, 0, u->deviceName, 250); | ||
1631 | if (alt < 0) { | ||
1632 | printk(KERN_INFO "error getting string descriptor 0 (error=%d)\n", alt); | ||
1633 | } else if (u->deviceName[0] < 4) { | ||
1634 | printk(KERN_INFO "string descriptor 0 too short (length = %d)\n", alt); | ||
1635 | } else { | ||
1636 | printk(KERN_INFO "string descriptor 0 found (length = %d)\n", alt); | ||
1637 | for(; alt >= 4; alt -= 2) { | ||
1638 | i = u->deviceName[alt-2] | (u->deviceName[alt-1]<< 8); | ||
1639 | printk(KERN_INFO "usb-midi: langid(%d) 0x%04x\n", | ||
1640 | (alt-4) >> 1, i); | ||
1641 | if ( ( ( i ^ ulangid ) & 0xff ) == 0 ) { | ||
1642 | d->have_langid = 1; | ||
1643 | d->string_langid = i; | ||
1644 | printk(KERN_INFO "usb-midi: langid(match) 0x%04x\n", i); | ||
1645 | if ( i == ulangid ) | ||
1646 | break; | ||
1647 | } | ||
1648 | } | ||
1649 | } | ||
1650 | } | ||
1651 | u->deviceName[0] = (char) 0; | ||
1652 | if (d->descriptor.iProduct) { | ||
1653 | printk(KERN_INFO "usb-midi: fetchString(%d)\n", d->descriptor.iProduct); | ||
1654 | alt = usb_string(d, d->descriptor.iProduct, u->deviceName, 255); | ||
1655 | if( alt < 0 ) { | ||
1656 | u->deviceName[0] = (char) 0; | ||
1657 | } | ||
1658 | printk(KERN_INFO "usb-midi: fetchString = %d\n", alt); | ||
1659 | } | ||
1660 | /* Failsafe */ | ||
1661 | if ( !u->deviceName[0] ) { | ||
1662 | if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_ROLAND ) { | ||
1663 | strcpy(u->deviceName, "Unknown Roland"); | ||
1664 | } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_STEINBERG ) { | ||
1665 | strcpy(u->deviceName, "Unknown Steinberg"); | ||
1666 | } else if (le16_to_cpu(d->descriptor.idVendor) == USB_VENDOR_ID_YAMAHA ) { | ||
1667 | strcpy(u->deviceName, "Unknown Yamaha"); | ||
1668 | } else { | ||
1669 | strcpy(u->deviceName, "Unknown"); | ||
1670 | } | ||
1671 | } | ||
1672 | } | ||
1673 | |||
1674 | inEndpoint = 0; inCableId = -1; | ||
1675 | outEndpoint = 0; outCableId = -1; | ||
1676 | |||
1677 | for ( i=0 ; i<devices ; i++ ) { | ||
1678 | for ( inCableId ++ ; | ||
1679 | inEndpoint <15 | ||
1680 | && mins[inEndpoint] | ||
1681 | && !(u->in[inEndpoint].cableId & (1<<inCableId)) ; | ||
1682 | inCableId++ ) { | ||
1683 | if ( inCableId >= 16 ) { | ||
1684 | inEndpoint ++; | ||
1685 | inCableId = 0; | ||
1686 | } | ||
1687 | } | ||
1688 | min = mins[inEndpoint]; | ||
1689 | for ( outCableId ++ ; | ||
1690 | outEndpoint <15 | ||
1691 | && mouts[outEndpoint] | ||
1692 | && !(u->out[outEndpoint].cableId & (1<<outCableId)) ; | ||
1693 | outCableId++ ) { | ||
1694 | if ( outCableId >= 16 ) { | ||
1695 | outEndpoint ++; | ||
1696 | outCableId = 0; | ||
1697 | } | ||
1698 | } | ||
1699 | mout = mouts[outEndpoint]; | ||
1700 | |||
1701 | mdevs[i] = allocMidiDev( s, min, mout, inCableId, outCableId ); | ||
1702 | if ( mdevs[i] == NULL ) | ||
1703 | goto error_end; | ||
1704 | |||
1705 | } | ||
1706 | |||
1707 | /* Success! */ | ||
1708 | for ( i=0 ; i<devices ; i++ ) { | ||
1709 | list_add_tail( &mdevs[i]->list, &s->midiDevList ); | ||
1710 | } | ||
1711 | for ( i=0 ; i<inEndpoints ; i++ ) { | ||
1712 | list_add_tail( &mins[i]->list, &s->inEndpointList ); | ||
1713 | } | ||
1714 | for ( i=0 ; i<outEndpoints ; i++ ) { | ||
1715 | list_add_tail( &mouts[i]->list, &s->outEndpointList ); | ||
1716 | } | ||
1717 | |||
1718 | printk(KERN_INFO "usbmidi: found [ %s ] (0x%04x:0x%04x), attached:\n", u->deviceName, u->idVendor, u->idProduct ); | ||
1719 | for ( i=0 ; i<devices ; i++ ) { | ||
1720 | int dm = (mdevs[i]->dev_midi-2)>>4; | ||
1721 | if ( mdevs[i]->mout.ep != NULL && mdevs[i]->min.ep != NULL ) { | ||
1722 | printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%2d) out (ep:%02x cid:%2d bufsiz:%2d)\n", | ||
1723 | dm, | ||
1724 | mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize, | ||
1725 | mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize); | ||
1726 | } else if ( mdevs[i]->min.ep != NULL ) { | ||
1727 | printk(KERN_INFO "usbmidi: /dev/midi%02d: in (ep:%02x cid:%2d bufsiz:%02d)\n", | ||
1728 | dm, | ||
1729 | mdevs[i]->min.ep->endpoint|USB_DIR_IN, mdevs[i]->min.cableId, mdevs[i]->min.ep->recvBufSize); | ||
1730 | } else if ( mdevs[i]->mout.ep != NULL ) { | ||
1731 | printk(KERN_INFO "usbmidi: /dev/midi%02d: out (ep:%02x cid:%2d bufsiz:%02d)\n", | ||
1732 | dm, | ||
1733 | mdevs[i]->mout.ep->endpoint, mdevs[i]->mout.cableId, mdevs[i]->mout.ep->bufSize); | ||
1734 | } | ||
1735 | } | ||
1736 | |||
1737 | kfree(mdevs); | ||
1738 | return 0; | ||
1739 | |||
1740 | error_end: | ||
1741 | if ( mdevs != NULL ) { | ||
1742 | for ( i=0 ; i<devices ; i++ ) { | ||
1743 | if ( mdevs[i] != NULL ) { | ||
1744 | unregister_sound_midi( mdevs[i]->dev_midi ); | ||
1745 | kfree(mdevs[i]); | ||
1746 | } | ||
1747 | } | ||
1748 | kfree(mdevs); | ||
1749 | } | ||
1750 | |||
1751 | for ( i=0 ; i<15 ; i++ ) { | ||
1752 | if ( mins[i] != NULL ) { | ||
1753 | remove_midi_in_endpoint( mins[i] ); | ||
1754 | } | ||
1755 | if ( mouts[i] != NULL ) { | ||
1756 | remove_midi_out_endpoint( mouts[i] ); | ||
1757 | } | ||
1758 | } | ||
1759 | |||
1760 | return -ENOMEM; | ||
1761 | } | ||
1762 | |||
1763 | /* ------------------------------------------------------------------------- */ | ||
1764 | |||
1765 | /** Attempt to scan YAMAHA's device descriptor and detect correct values of | ||
1766 | * them. | ||
1767 | * Return 0 on succes, negative on failure. | ||
1768 | * Called by usb_midi_probe(); | ||
1769 | **/ | ||
1770 | |||
1771 | static int detect_yamaha_device( struct usb_device *d, | ||
1772 | struct usb_interface *iface, unsigned int ifnum, | ||
1773 | struct usb_midi_state *s) | ||
1774 | { | ||
1775 | struct usb_host_interface *interface; | ||
1776 | struct usb_midi_device *u; | ||
1777 | unsigned char *buffer; | ||
1778 | int bufSize; | ||
1779 | int i; | ||
1780 | int alts=-1; | ||
1781 | int ret; | ||
1782 | |||
1783 | if (le16_to_cpu(d->descriptor.idVendor) != USB_VENDOR_ID_YAMAHA) { | ||
1784 | return -EINVAL; | ||
1785 | } | ||
1786 | |||
1787 | for ( i=0 ; i < iface->num_altsetting; i++ ) { | ||
1788 | interface = iface->altsetting + i; | ||
1789 | |||
1790 | if ( interface->desc.bInterfaceClass != 255 || | ||
1791 | interface->desc.bInterfaceSubClass != 0 ) | ||
1792 | continue; | ||
1793 | alts = interface->desc.bAlternateSetting; | ||
1794 | } | ||
1795 | if ( alts == -1 ) { | ||
1796 | return -EINVAL; | ||
1797 | } | ||
1798 | |||
1799 | printk(KERN_INFO "usb-midi: Found YAMAHA USB-MIDI device on dev %04x:%04x, iface %d\n", | ||
1800 | le16_to_cpu(d->descriptor.idVendor), | ||
1801 | le16_to_cpu(d->descriptor.idProduct), ifnum); | ||
1802 | |||
1803 | i = d->actconfig - d->config; | ||
1804 | buffer = d->rawdescriptors[i]; | ||
1805 | bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength); | ||
1806 | |||
1807 | u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 1); | ||
1808 | if ( u == NULL ) { | ||
1809 | return -EINVAL; | ||
1810 | } | ||
1811 | |||
1812 | ret = alloc_usb_midi_device( d, s, u ); | ||
1813 | |||
1814 | kfree(u); | ||
1815 | |||
1816 | return ret; | ||
1817 | } | ||
1818 | |||
1819 | |||
1820 | /** Scan table of known devices which are only partially compliant with | ||
1821 | * the MIDIStreaming specification. | ||
1822 | * Called by usb_midi_probe(); | ||
1823 | * | ||
1824 | **/ | ||
1825 | |||
1826 | static int detect_vendor_specific_device( struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s ) | ||
1827 | { | ||
1828 | struct usb_midi_device *u; | ||
1829 | int i; | ||
1830 | int ret = -ENXIO; | ||
1831 | |||
1832 | for ( i=0; i<VENDOR_SPECIFIC_USB_MIDI_DEVICES ; i++ ) { | ||
1833 | u=&(usb_midi_devices[i]); | ||
1834 | |||
1835 | if ( le16_to_cpu(d->descriptor.idVendor) != u->idVendor || | ||
1836 | le16_to_cpu(d->descriptor.idProduct) != u->idProduct || | ||
1837 | ifnum != u->interface ) | ||
1838 | continue; | ||
1839 | |||
1840 | ret = alloc_usb_midi_device( d, s, u ); | ||
1841 | break; | ||
1842 | } | ||
1843 | |||
1844 | return ret; | ||
1845 | } | ||
1846 | |||
1847 | |||
1848 | /** Attempt to match any config of an interface to a MIDISTREAMING interface. | ||
1849 | * Returns 0 on success, negative on failure. | ||
1850 | * Called by usb_midi_probe(); | ||
1851 | **/ | ||
1852 | static int detect_midi_subclass(struct usb_device *d, | ||
1853 | struct usb_interface *iface, unsigned int ifnum, | ||
1854 | struct usb_midi_state *s) | ||
1855 | { | ||
1856 | struct usb_host_interface *interface; | ||
1857 | struct usb_midi_device *u; | ||
1858 | unsigned char *buffer; | ||
1859 | int bufSize; | ||
1860 | int i; | ||
1861 | int alts=-1; | ||
1862 | int ret; | ||
1863 | |||
1864 | for ( i=0 ; i < iface->num_altsetting; i++ ) { | ||
1865 | interface = iface->altsetting + i; | ||
1866 | |||
1867 | if ( interface->desc.bInterfaceClass != USB_CLASS_AUDIO || | ||
1868 | interface->desc.bInterfaceSubClass != USB_SUBCLASS_MIDISTREAMING ) | ||
1869 | continue; | ||
1870 | alts = interface->desc.bAlternateSetting; | ||
1871 | } | ||
1872 | if ( alts == -1 ) { | ||
1873 | return -EINVAL; | ||
1874 | } | ||
1875 | |||
1876 | printk(KERN_INFO "usb-midi: Found MIDISTREAMING on dev %04x:%04x, iface %d\n", | ||
1877 | le16_to_cpu(d->descriptor.idVendor), | ||
1878 | le16_to_cpu(d->descriptor.idProduct), ifnum); | ||
1879 | |||
1880 | |||
1881 | /* From USB Spec v2.0, Section 9.5. | ||
1882 | If the class or vendor specific descriptors use the same format | ||
1883 | as standard descriptors (e.g., start with a length byte and | ||
1884 | followed by a type byte), they must be returned interleaved with | ||
1885 | standard descriptors in the configuration information returned by | ||
1886 | a GetDescriptor(Configuration) request. In this case, the class | ||
1887 | or vendor-specific descriptors must follow a related standard | ||
1888 | descriptor they modify or extend. | ||
1889 | */ | ||
1890 | |||
1891 | i = d->actconfig - d->config; | ||
1892 | buffer = d->rawdescriptors[i]; | ||
1893 | bufSize = le16_to_cpu(d->actconfig->desc.wTotalLength); | ||
1894 | |||
1895 | u = parse_descriptor( d, buffer, bufSize, ifnum, alts, 0); | ||
1896 | if ( u == NULL ) { | ||
1897 | return -EINVAL; | ||
1898 | } | ||
1899 | |||
1900 | ret = alloc_usb_midi_device( d, s, u ); | ||
1901 | |||
1902 | kfree(u); | ||
1903 | |||
1904 | return ret; | ||
1905 | } | ||
1906 | |||
1907 | |||
1908 | /** When user has requested a specific device, match it exactly. | ||
1909 | * | ||
1910 | * Uses uvendor, uproduct, uinterface, ualt, umin, umout and ucable. | ||
1911 | * Called by usb_midi_probe(); | ||
1912 | * | ||
1913 | **/ | ||
1914 | static int detect_by_hand(struct usb_device *d, unsigned int ifnum, struct usb_midi_state *s) | ||
1915 | { | ||
1916 | struct usb_midi_device u; | ||
1917 | |||
1918 | if ( le16_to_cpu(d->descriptor.idVendor) != uvendor || | ||
1919 | le16_to_cpu(d->descriptor.idProduct) != uproduct || | ||
1920 | ifnum != uinterface ) { | ||
1921 | return -EINVAL; | ||
1922 | } | ||
1923 | |||
1924 | if ( ualt < 0 ) | ||
1925 | ualt = -1; | ||
1926 | |||
1927 | if ( umin < 0 || umin > 15 ) | ||
1928 | umin = 0x01 | USB_DIR_IN; | ||
1929 | if ( umout < 0 || umout > 15 ) | ||
1930 | umout = 0x01; | ||
1931 | if ( ucable < 0 || ucable > 15 ) | ||
1932 | ucable = 0; | ||
1933 | |||
1934 | u.deviceName = NULL; /* A flag for alloc_usb_midi_device to get device | ||
1935 | name from device. */ | ||
1936 | u.idVendor = uvendor; | ||
1937 | u.idProduct = uproduct; | ||
1938 | u.interface = uinterface; | ||
1939 | u.altSetting = ualt; | ||
1940 | |||
1941 | u.in[0].endpoint = umin; | ||
1942 | u.in[0].cableId = (1<<ucable); | ||
1943 | |||
1944 | u.out[0].endpoint = umout; | ||
1945 | u.out[0].cableId = (1<<ucable); | ||
1946 | |||
1947 | return alloc_usb_midi_device( d, s, &u ); | ||
1948 | } | ||
1949 | |||
1950 | |||
1951 | |||
1952 | /* ------------------------------------------------------------------------- */ | ||
1953 | |||
1954 | static int usb_midi_probe(struct usb_interface *intf, | ||
1955 | const struct usb_device_id *id) | ||
1956 | { | ||
1957 | struct usb_midi_state *s; | ||
1958 | struct usb_device *dev = interface_to_usbdev(intf); | ||
1959 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | ||
1960 | |||
1961 | s = (struct usb_midi_state *)kmalloc(sizeof(struct usb_midi_state), GFP_KERNEL); | ||
1962 | if ( !s ) | ||
1963 | return -ENOMEM; | ||
1964 | |||
1965 | memset( s, 0, sizeof(struct usb_midi_state) ); | ||
1966 | INIT_LIST_HEAD(&s->midiDevList); | ||
1967 | INIT_LIST_HEAD(&s->inEndpointList); | ||
1968 | INIT_LIST_HEAD(&s->outEndpointList); | ||
1969 | s->usbdev = dev; | ||
1970 | s->count = 0; | ||
1971 | spin_lock_init(&s->lock); | ||
1972 | |||
1973 | if ( | ||
1974 | detect_by_hand( dev, ifnum, s ) && | ||
1975 | detect_midi_subclass( dev, intf, ifnum, s ) && | ||
1976 | detect_vendor_specific_device( dev, ifnum, s ) && | ||
1977 | detect_yamaha_device( dev, intf, ifnum, s) ) { | ||
1978 | kfree(s); | ||
1979 | return -EIO; | ||
1980 | } | ||
1981 | |||
1982 | down(&open_sem); | ||
1983 | list_add_tail(&s->mididev, &mididevs); | ||
1984 | up(&open_sem); | ||
1985 | |||
1986 | usb_set_intfdata (intf, s); | ||
1987 | return 0; | ||
1988 | } | ||
1989 | |||
1990 | |||
1991 | static void usb_midi_disconnect(struct usb_interface *intf) | ||
1992 | { | ||
1993 | struct usb_midi_state *s = usb_get_intfdata (intf); | ||
1994 | struct usb_mididev *m; | ||
1995 | |||
1996 | if ( !s ) | ||
1997 | return; | ||
1998 | |||
1999 | if ( s == (struct usb_midi_state *)-1 ) { | ||
2000 | return; | ||
2001 | } | ||
2002 | if ( !s->usbdev ) { | ||
2003 | return; | ||
2004 | } | ||
2005 | down(&open_sem); | ||
2006 | list_del(&s->mididev); | ||
2007 | INIT_LIST_HEAD(&s->mididev); | ||
2008 | s->usbdev = NULL; | ||
2009 | usb_set_intfdata (intf, NULL); | ||
2010 | |||
2011 | list_for_each_entry(m, &s->midiDevList, list) { | ||
2012 | wake_up(&(m->min.ep->wait)); | ||
2013 | wake_up(&(m->mout.ep->wait)); | ||
2014 | if ( m->dev_midi >= 0 ) { | ||
2015 | unregister_sound_midi(m->dev_midi); | ||
2016 | } | ||
2017 | m->dev_midi = -1; | ||
2018 | } | ||
2019 | release_midi_device(s); | ||
2020 | wake_up(&open_wait); | ||
2021 | } | ||
2022 | |||
2023 | /* we want to look at all devices by hand */ | ||
2024 | static struct usb_device_id id_table[] = { | ||
2025 | {.driver_info = 42}, | ||
2026 | {} | ||
2027 | }; | ||
2028 | |||
2029 | static struct usb_driver usb_midi_driver = { | ||
2030 | .name = "midi", | ||
2031 | .probe = usb_midi_probe, | ||
2032 | .disconnect = usb_midi_disconnect, | ||
2033 | .id_table = id_table, | ||
2034 | }; | ||
2035 | |||
2036 | /* ------------------------------------------------------------------------- */ | ||
2037 | |||
2038 | static int __init usb_midi_init(void) | ||
2039 | { | ||
2040 | return usb_register(&usb_midi_driver); | ||
2041 | } | ||
2042 | |||
2043 | static void __exit usb_midi_exit(void) | ||
2044 | { | ||
2045 | usb_deregister(&usb_midi_driver); | ||
2046 | } | ||
2047 | |||
2048 | module_init(usb_midi_init) ; | ||
2049 | module_exit(usb_midi_exit) ; | ||
2050 | |||
2051 | #ifdef HAVE_ALSA_SUPPORT | ||
2052 | #define SNDRV_MAIN_OBJECT_FILE | ||
2053 | #include "../../include/driver.h" | ||
2054 | #include "../../include/control.h" | ||
2055 | #include "../../include/info.h" | ||
2056 | #include "../../include/cs46xx.h" | ||
2057 | |||
2058 | /* ------------------------------------------------------------------------- */ | ||
2059 | |||
2060 | static int snd_usbmidi_input_close(snd_rawmidi_substream_t * substream) | ||
2061 | { | ||
2062 | return 0; | ||
2063 | } | ||
2064 | |||
2065 | static int snd_usbmidi_input_open(snd_rawmidi_substream_t * substream ) | ||
2066 | { | ||
2067 | return 0; | ||
2068 | } | ||
2069 | |||
2070 | static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t * substream, int up) | ||
2071 | { | ||
2072 | return 0; | ||
2073 | } | ||
2074 | |||
2075 | |||
2076 | /* ------------------------------------------------------------------------- */ | ||
2077 | |||
2078 | static int snd_usbmidi_output_close(snd_rawmidi_substream_t * substream) | ||
2079 | { | ||
2080 | return 0; | ||
2081 | } | ||
2082 | |||
2083 | static int snd_usbmidi_output_open(snd_rawmidi_substream_t * substream) | ||
2084 | { | ||
2085 | return 0; | ||
2086 | } | ||
2087 | |||
2088 | static void snd_usb_midi_output_trigger(snd_rawmidi_substream_t * substream, | ||
2089 | int up) | ||
2090 | { | ||
2091 | return 0; | ||
2092 | } | ||
2093 | |||
2094 | /* ------------------------------------------------------------------------- */ | ||
2095 | |||
2096 | static snd_rawmidi_ops_t snd_usbmidi_output = | ||
2097 | { | ||
2098 | .open = snd_usbmidi_output_open, | ||
2099 | .close = snd_usbmidi_output_close, | ||
2100 | .trigger = snd_usbmidi_output_trigger, | ||
2101 | }; | ||
2102 | static snd_rawmidi_ops_t snd_usbmidi_input = | ||
2103 | { | ||
2104 | .open = snd_usbmidi_input_open, | ||
2105 | .close = snd_usbmidi_input_close, | ||
2106 | .trigger = snd_usbmidi_input_trigger, | ||
2107 | }; | ||
2108 | |||
2109 | int snd_usbmidi_midi(cs46xx_t *chip, int device, snd_rawmidi_t **rrawmidi) | ||
2110 | { | ||
2111 | snd_rawmidi_t *rmidi; | ||
2112 | int err; | ||
2113 | |||
2114 | if (rrawmidi) | ||
2115 | *rrawmidi = NULL; | ||
2116 | if ((err = snd_rawmidi_new(chip->card, "USB-MIDI", device, 1, 1, &rmidi)) < 0) | ||
2117 | return err; | ||
2118 | strcpy(rmidi->name, "USB-MIDI"); | ||
2119 | |||
2120 | snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output ); | ||
2121 | snd_rawmidi_set_ops( rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input ); | ||
2122 | |||
2123 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX; | ||
2124 | |||
2125 | rmidi->private_data = chip; | ||
2126 | chip->rmidi = rmidi; | ||
2127 | if (rrawmidi) | ||
2128 | *rrawmidi = NULL; | ||
2129 | |||
2130 | return 0; | ||
2131 | } | ||
2132 | |||
2133 | int snd_usbmidi_create( snd_card_t * card, | ||
2134 | struct pci_dev * pci, | ||
2135 | usbmidi_t ** rchip ) | ||
2136 | { | ||
2137 | usbmidi_t *chip; | ||
2138 | int err, idx; | ||
2139 | snd_region_t *region; | ||
2140 | static snd_device_opt_t ops = { | ||
2141 | .dev_free = snd_usbmidi_dev_free, | ||
2142 | }; | ||
2143 | |||
2144 | *rchip = NULL; | ||
2145 | chip = snd_magic_kcalloc( usbmidi_t, 0, GFP_KERNEL ); | ||
2146 | if ( chip == NULL ) | ||
2147 | return -ENOMEM; | ||
2148 | } | ||
2149 | |||
2150 | EXPORT_SYMBOL(snd_usbmidi_create); | ||
2151 | EXPORT_SYMBOL(snd_usbmidi_midi); | ||
2152 | #endif /* HAVE_ALSA_SUPPORT */ | ||
2153 | |||