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vmalloc: fix __GFP_HIGHMEM usage for vmalloc_32 on 32b systems
[linux/fpc-iii.git] / sound / usb / usx2y / usbusx2yaudio.c
blob345e439aa95b43dc237f8ca26032547b9115c422
1 /*
2 * US-X2Y AUDIO
3 * Copyright (c) 2002-2004 by Karsten Wiese
4 *
5 * based on
6 *
7 * (Tentative) USB Audio Driver for ALSA
8 *
9 * Main and PCM part
10 *
11 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
12 *
13 * Many codes borrowed from audio.c by
14 * Alan Cox (alan@lxorguk.ukuu.org.uk)
15 * Thomas Sailer (sailer@ife.ee.ethz.ch)
16 *
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 */
32
33
34 #include <linux/interrupt.h>
35 #include <linux/slab.h>
36 #include <linux/usb.h>
37 #include <linux/moduleparam.h>
38 #include <sound/core.h>
39 #include <sound/info.h>
40 #include <sound/pcm.h>
41 #include <sound/pcm_params.h>
42 #include "usx2y.h"
43 #include "usbusx2y.h"
44
45 #define USX2Y_NRPACKS 4 /* Default value used for nr of packs per urb.
46 1 to 4 have been tested ok on uhci.
47 To use 3 on ohci, you'd need a patch:
48 look for "0000425-linux-2.6.9-rc4-mm1_ohci-hcd.patch.gz" on
49 "https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000425"
50 .
51 1, 2 and 4 work out of the box on ohci, if I recall correctly.
52 Bigger is safer operation,
53 smaller gives lower latencies.
54 */
55 #define USX2Y_NRPACKS_VARIABLE y /* If your system works ok with this module's parameter
56 nrpacks set to 1, you might as well comment
57 this #define out, and thereby produce smaller, faster code.
58 You'd also set USX2Y_NRPACKS to 1 then.
59 */
60
61 #ifdef USX2Y_NRPACKS_VARIABLE
62 static int nrpacks = USX2Y_NRPACKS; /* number of packets per urb */
63 #define nr_of_packs() nrpacks
64 module_param(nrpacks, int, 0444);
65 MODULE_PARM_DESC(nrpacks, "Number of packets per URB.");
66 #else
67 #define nr_of_packs() USX2Y_NRPACKS
68 #endif
69
70
71 static int usX2Y_urb_capt_retire(struct snd_usX2Y_substream *subs)
72 {
73 struct urb *urb = subs->completed_urb;
74 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
75 unsigned char *cp;
76 int i, len, lens = 0, hwptr_done = subs->hwptr_done;
77 struct usX2Ydev *usX2Y = subs->usX2Y;
78
79 for (i = 0; i < nr_of_packs(); i++) {
80 cp = (unsigned char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
81 if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */
82 snd_printk(KERN_ERR "active frame status %i. "
83 "Most probably some hardware problem.\n",
84 urb->iso_frame_desc[i].status);
85 return urb->iso_frame_desc[i].status;
86 }
87 len = urb->iso_frame_desc[i].actual_length / usX2Y->stride;
88 if (! len) {
89 snd_printd("0 == len ERROR!\n");
90 continue;
91 }
92
93 /* copy a data chunk */
94 if ((hwptr_done + len) > runtime->buffer_size) {
95 int cnt = runtime->buffer_size - hwptr_done;
96 int blen = cnt * usX2Y->stride;
97 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen);
98 memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen);
99 } else {
100 memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp,
101 len * usX2Y->stride);
102 }
103 lens += len;
104 if ((hwptr_done += len) >= runtime->buffer_size)
105 hwptr_done -= runtime->buffer_size;
106 }
107
108 subs->hwptr_done = hwptr_done;
109 subs->transfer_done += lens;
110 /* update the pointer, call callback if necessary */
111 if (subs->transfer_done >= runtime->period_size) {
112 subs->transfer_done -= runtime->period_size;
113 snd_pcm_period_elapsed(subs->pcm_substream);
114 }
115 return 0;
116 }
117 /*
118 * prepare urb for playback data pipe
119 *
120 * we copy the data directly from the pcm buffer.
121 * the current position to be copied is held in hwptr field.
122 * since a urb can handle only a single linear buffer, if the total
123 * transferred area overflows the buffer boundary, we cannot send
124 * it directly from the buffer. thus the data is once copied to
125 * a temporary buffer and urb points to that.
126 */
127 static int usX2Y_urb_play_prepare(struct snd_usX2Y_substream *subs,
128 struct urb *cap_urb,
129 struct urb *urb)
130 {
131 int count, counts, pack;
132 struct usX2Ydev *usX2Y = subs->usX2Y;
133 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
134
135 count = 0;
136 for (pack = 0; pack < nr_of_packs(); pack++) {
137 /* calculate the size of a packet */
138 counts = cap_urb->iso_frame_desc[pack].actual_length / usX2Y->stride;
139 count += counts;
140 if (counts < 43 || counts > 50) {
141 snd_printk(KERN_ERR "should not be here with counts=%i\n", counts);
142 return -EPIPE;
143 }
144 /* set up descriptor */
145 urb->iso_frame_desc[pack].offset = pack ?
146 urb->iso_frame_desc[pack - 1].offset +
147 urb->iso_frame_desc[pack - 1].length :
148 0;
149 urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length;
150 }
151 if (atomic_read(&subs->state) >= state_PRERUNNING)
152 if (subs->hwptr + count > runtime->buffer_size) {
153 /* err, the transferred area goes over buffer boundary.
154 * copy the data to the temp buffer.
155 */
156 int len;
157 len = runtime->buffer_size - subs->hwptr;
158 urb->transfer_buffer = subs->tmpbuf;
159 memcpy(subs->tmpbuf, runtime->dma_area +
160 subs->hwptr * usX2Y->stride, len * usX2Y->stride);
161 memcpy(subs->tmpbuf + len * usX2Y->stride,
162 runtime->dma_area, (count - len) * usX2Y->stride);
163 subs->hwptr += count;
164 subs->hwptr -= runtime->buffer_size;
165 } else {
166 /* set the buffer pointer */
167 urb->transfer_buffer = runtime->dma_area + subs->hwptr * usX2Y->stride;
168 if ((subs->hwptr += count) >= runtime->buffer_size)
169 subs->hwptr -= runtime->buffer_size;
170 }
171 else
172 urb->transfer_buffer = subs->tmpbuf;
173 urb->transfer_buffer_length = count * usX2Y->stride;
174 return 0;
175 }
176
177 /*
178 * process after playback data complete
179 *
180 * update the current position and call callback if a period is processed.
181 */
182 static void usX2Y_urb_play_retire(struct snd_usX2Y_substream *subs, struct urb *urb)
183 {
184 struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
185 int len = urb->actual_length / subs->usX2Y->stride;
186
187 subs->transfer_done += len;
188 subs->hwptr_done += len;
189 if (subs->hwptr_done >= runtime->buffer_size)
190 subs->hwptr_done -= runtime->buffer_size;
191 if (subs->transfer_done >= runtime->period_size) {
192 subs->transfer_done -= runtime->period_size;
193 snd_pcm_period_elapsed(subs->pcm_substream);
194 }
195 }
196
197 static int usX2Y_urb_submit(struct snd_usX2Y_substream *subs, struct urb *urb, int frame)
198 {
199 int err;
200 if (!urb)
201 return -ENODEV;
202 urb->start_frame = (frame + NRURBS * nr_of_packs()); // let hcd do rollover sanity checks
203 urb->hcpriv = NULL;
204 urb->dev = subs->usX2Y->dev; /* we need to set this at each time */
205 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
206 snd_printk(KERN_ERR "usb_submit_urb() returned %i\n", err);
207 return err;
208 }
209 return 0;
210 }
211
212 static inline int usX2Y_usbframe_complete(struct snd_usX2Y_substream *capsubs,
213 struct snd_usX2Y_substream *playbacksubs,
214 int frame)
215 {
216 int err, state;
217 struct urb *urb = playbacksubs->completed_urb;
218
219 state = atomic_read(&playbacksubs->state);
220 if (NULL != urb) {
221 if (state == state_RUNNING)
222 usX2Y_urb_play_retire(playbacksubs, urb);
223 else if (state >= state_PRERUNNING)
224 atomic_inc(&playbacksubs->state);
225 } else {
226 switch (state) {
227 case state_STARTING1:
228 urb = playbacksubs->urb[0];
229 atomic_inc(&playbacksubs->state);
230 break;
231 case state_STARTING2:
232 urb = playbacksubs->urb[1];
233 atomic_inc(&playbacksubs->state);
234 break;
235 }
236 }
237 if (urb) {
238 if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) ||
239 (err = usX2Y_urb_submit(playbacksubs, urb, frame))) {
240 return err;
241 }
242 }
243
244 playbacksubs->completed_urb = NULL;
245
246 state = atomic_read(&capsubs->state);
247 if (state >= state_PREPARED) {
248 if (state == state_RUNNING) {
249 if ((err = usX2Y_urb_capt_retire(capsubs)))
250 return err;
251 } else if (state >= state_PRERUNNING)
252 atomic_inc(&capsubs->state);
253 if ((err = usX2Y_urb_submit(capsubs, capsubs->completed_urb, frame)))
254 return err;
255 }
256 capsubs->completed_urb = NULL;
257 return 0;
258 }
259
260
261 static void usX2Y_clients_stop(struct usX2Ydev *usX2Y)
262 {
263 int s, u;
264
265 for (s = 0; s < 4; s++) {
266 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
267 if (subs) {
268 snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state));
269 atomic_set(&subs->state, state_STOPPED);
270 }
271 }
272 for (s = 0; s < 4; s++) {
273 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
274 if (subs) {
275 if (atomic_read(&subs->state) >= state_PRERUNNING)
276 snd_pcm_stop_xrun(subs->pcm_substream);
277 for (u = 0; u < NRURBS; u++) {
278 struct urb *urb = subs->urb[u];
279 if (NULL != urb)
280 snd_printdd("%i status=%i start_frame=%i\n",
281 u, urb->status, urb->start_frame);
282 }
283 }
284 }
285 usX2Y->prepare_subs = NULL;
286 wake_up(&usX2Y->prepare_wait_queue);
287 }
288
289 static void usX2Y_error_urb_status(struct usX2Ydev *usX2Y,
290 struct snd_usX2Y_substream *subs, struct urb *urb)
291 {
292 snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
293 urb->status = 0;
294 usX2Y_clients_stop(usX2Y);
295 }
296
297 static void i_usX2Y_urb_complete(struct urb *urb)
298 {
299 struct snd_usX2Y_substream *subs = urb->context;
300 struct usX2Ydev *usX2Y = subs->usX2Y;
301
302 if (unlikely(atomic_read(&subs->state) < state_PREPARED)) {
303 snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
304 usb_get_current_frame_number(usX2Y->dev),
305 subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
306 urb->status, urb->start_frame);
307 return;
308 }
309 if (unlikely(urb->status)) {
310 usX2Y_error_urb_status(usX2Y, subs, urb);
311 return;
312 }
313
314 subs->completed_urb = urb;
315
316 {
317 struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE],
318 *playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
319 if (capsubs->completed_urb &&
320 atomic_read(&capsubs->state) >= state_PREPARED &&
321 (playbacksubs->completed_urb ||
322 atomic_read(&playbacksubs->state) < state_PREPARED)) {
323 if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame))
324 usX2Y->wait_iso_frame += nr_of_packs();
325 else {
326 snd_printdd("\n");
327 usX2Y_clients_stop(usX2Y);
328 }
329 }
330 }
331 }
332
333 static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y,
334 void (*complete)(struct urb *))
335 {
336 int s, u;
337 for (s = 0; s < 4; s++) {
338 struct snd_usX2Y_substream *subs = usX2Y->subs[s];
339 if (NULL != subs)
340 for (u = 0; u < NRURBS; u++) {
341 struct urb * urb = subs->urb[u];
342 if (NULL != urb)
343 urb->complete = complete;
344 }
345 }
346 }
347
348 static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y)
349 {
350 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete);
351 usX2Y->prepare_subs = NULL;
352 }
353
354 static void i_usX2Y_subs_startup(struct urb *urb)
355 {
356 struct snd_usX2Y_substream *subs = urb->context;
357 struct usX2Ydev *usX2Y = subs->usX2Y;
358 struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs;
359 if (NULL != prepare_subs)
360 if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
361 usX2Y_subs_startup_finish(usX2Y);
362 atomic_inc(&prepare_subs->state);
363 wake_up(&usX2Y->prepare_wait_queue);
364 }
365
366 i_usX2Y_urb_complete(urb);
367 }
368
369 static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs)
370 {
371 snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n",
372 subs, subs->endpoint, subs->urb[0], subs->urb[1]);
373 /* reset the pointer */
374 subs->hwptr = 0;
375 subs->hwptr_done = 0;
376 subs->transfer_done = 0;
377 }
378
379
380 static void usX2Y_urb_release(struct urb **urb, int free_tb)
381 {
382 if (*urb) {
383 usb_kill_urb(*urb);
384 if (free_tb)
385 kfree((*urb)->transfer_buffer);
386 usb_free_urb(*urb);
387 *urb = NULL;
388 }
389 }
390 /*
391 * release a substreams urbs
392 */
393 static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs)
394 {
395 int i;
396 snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint);
397 for (i = 0; i < NRURBS; i++)
398 usX2Y_urb_release(subs->urb + i,
399 subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
400
401 kfree(subs->tmpbuf);
402 subs->tmpbuf = NULL;
403 }
404 /*
405 * initialize a substream's urbs
406 */
407 static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs)
408 {
409 int i;
410 unsigned int pipe;
411 int is_playback = subs == subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
412 struct usb_device *dev = subs->usX2Y->dev;
413
414 pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
415 usb_rcvisocpipe(dev, subs->endpoint);
416 subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
417 if (!subs->maxpacksize)
418 return -EINVAL;
419
420 if (is_playback && NULL == subs->tmpbuf) { /* allocate a temporary buffer for playback */
421 subs->tmpbuf = kcalloc(nr_of_packs(), subs->maxpacksize, GFP_KERNEL);
422 if (!subs->tmpbuf)
423 return -ENOMEM;
424 }
425 /* allocate and initialize data urbs */
426 for (i = 0; i < NRURBS; i++) {
427 struct urb **purb = subs->urb + i;
428 if (*purb) {
429 usb_kill_urb(*purb);
430 continue;
431 }
432 *purb = usb_alloc_urb(nr_of_packs(), GFP_KERNEL);
433 if (NULL == *purb) {
434 usX2Y_urbs_release(subs);
435 return -ENOMEM;
436 }
437 if (!is_playback && !(*purb)->transfer_buffer) {
438 /* allocate a capture buffer per urb */
439 (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL);
440 if (NULL == (*purb)->transfer_buffer) {
441 usX2Y_urbs_release(subs);
442 return -ENOMEM;
443 }
444 }
445 (*purb)->dev = dev;
446 (*purb)->pipe = pipe;
447 (*purb)->number_of_packets = nr_of_packs();
448 (*purb)->context = subs;
449 (*purb)->interval = 1;
450 (*purb)->complete = i_usX2Y_subs_startup;
451 }
452 return 0;
453 }
454
455 static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs)
456 {
457 struct usX2Ydev *usX2Y = subs->usX2Y;
458 usX2Y->prepare_subs = subs;
459 subs->urb[0]->start_frame = -1;
460 wmb();
461 usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup);
462 }
463
464 static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs)
465 {
466 int i, err;
467 struct usX2Ydev *usX2Y = subs->usX2Y;
468
469 if ((err = usX2Y_urbs_allocate(subs)) < 0)
470 return err;
471 subs->completed_urb = NULL;
472 for (i = 0; i < 4; i++) {
473 struct snd_usX2Y_substream *subs = usX2Y->subs[i];
474 if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
475 goto start;
476 }
477
478 start:
479 usX2Y_subs_startup(subs);
480 for (i = 0; i < NRURBS; i++) {
481 struct urb *urb = subs->urb[i];
482 if (usb_pipein(urb->pipe)) {
483 unsigned long pack;
484 if (0 == i)
485 atomic_set(&subs->state, state_STARTING3);
486 urb->dev = usX2Y->dev;
487 for (pack = 0; pack < nr_of_packs(); pack++) {
488 urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
489 urb->iso_frame_desc[pack].length = subs->maxpacksize;
490 }
491 urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
492 if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
493 snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
494 err = -EPIPE;
495 goto cleanup;
496 } else
497 if (i == 0)
498 usX2Y->wait_iso_frame = urb->start_frame;
499 urb->transfer_flags = 0;
500 } else {
501 atomic_set(&subs->state, state_STARTING1);
502 break;
503 }
504 }
505 err = 0;
506 wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs);
507 if (atomic_read(&subs->state) != state_PREPARED)
508 err = -EPIPE;
509
510 cleanup:
511 if (err) {
512 usX2Y_subs_startup_finish(usX2Y);
513 usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything
514 }
515 return err;
516 }
517
518 /*
519 * return the current pcm pointer. just return the hwptr_done value.
520 */
521 static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream)
522 {
523 struct snd_usX2Y_substream *subs = substream->runtime->private_data;
524 return subs->hwptr_done;
525 }
526 /*
527 * start/stop substream
528 */
529 static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
530 {
531 struct snd_usX2Y_substream *subs = substream->runtime->private_data;
532
533 switch (cmd) {
534 case SNDRV_PCM_TRIGGER_START:
535 snd_printdd("snd_usX2Y_pcm_trigger(START)\n");
536 if (atomic_read(&subs->state) == state_PREPARED &&
537 atomic_read(&subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]->state) >= state_PREPARED) {
538 atomic_set(&subs->state, state_PRERUNNING);
539 } else {
540 snd_printdd("\n");
541 return -EPIPE;
542 }
543 break;
544 case SNDRV_PCM_TRIGGER_STOP:
545 snd_printdd("snd_usX2Y_pcm_trigger(STOP)\n");
546 if (atomic_read(&subs->state) >= state_PRERUNNING)
547 atomic_set(&subs->state, state_PREPARED);
548 break;
549 default:
550 return -EINVAL;
551 }
552 return 0;
553 }
554
555
556 /*
557 * allocate a buffer, setup samplerate
558 *
559 * so far we use a physically linear buffer although packetize transfer
560 * doesn't need a continuous area.
561 * if sg buffer is supported on the later version of alsa, we'll follow
562 * that.
563 */
564 static struct s_c2
565 {
566 char c1, c2;
567 }
568 SetRate44100[] =
569 {
570 { 0x14, 0x08}, // this line sets 44100, well actually a little less
571 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
572 { 0x18, 0x42},
573 { 0x18, 0x45},
574 { 0x18, 0x46},
575 { 0x18, 0x48},
576 { 0x18, 0x4A},
577 { 0x18, 0x4C},
578 { 0x18, 0x4E},
579 { 0x18, 0x50},
580 { 0x18, 0x52},
581 { 0x18, 0x54},
582 { 0x18, 0x56},
583 { 0x18, 0x58},
584 { 0x18, 0x5A},
585 { 0x18, 0x5C},
586 { 0x18, 0x5E},
587 { 0x18, 0x60},
588 { 0x18, 0x62},
589 { 0x18, 0x64},
590 { 0x18, 0x66},
591 { 0x18, 0x68},
592 { 0x18, 0x6A},
593 { 0x18, 0x6C},
594 { 0x18, 0x6E},
595 { 0x18, 0x70},
596 { 0x18, 0x72},
597 { 0x18, 0x74},
598 { 0x18, 0x76},
599 { 0x18, 0x78},
600 { 0x18, 0x7A},
601 { 0x18, 0x7C},
602 { 0x18, 0x7E}
603 };
604 static struct s_c2 SetRate48000[] =
605 {
606 { 0x14, 0x09}, // this line sets 48000, well actually a little less
607 { 0x18, 0x40}, // only tascam / frontier design knows the further lines .......
608 { 0x18, 0x42},
609 { 0x18, 0x45},
610 { 0x18, 0x46},
611 { 0x18, 0x48},
612 { 0x18, 0x4A},
613 { 0x18, 0x4C},
614 { 0x18, 0x4E},
615 { 0x18, 0x50},
616 { 0x18, 0x52},
617 { 0x18, 0x54},
618 { 0x18, 0x56},
619 { 0x18, 0x58},
620 { 0x18, 0x5A},
621 { 0x18, 0x5C},
622 { 0x18, 0x5E},
623 { 0x18, 0x60},
624 { 0x18, 0x62},
625 { 0x18, 0x64},
626 { 0x18, 0x66},
627 { 0x18, 0x68},
628 { 0x18, 0x6A},
629 { 0x18, 0x6C},
630 { 0x18, 0x6E},
631 { 0x18, 0x70},
632 { 0x18, 0x73},
633 { 0x18, 0x74},
634 { 0x18, 0x76},
635 { 0x18, 0x78},
636 { 0x18, 0x7A},
637 { 0x18, 0x7C},
638 { 0x18, 0x7E}
639 };
640 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000)
641
642 static void i_usX2Y_04Int(struct urb *urb)
643 {
644 struct usX2Ydev *usX2Y = urb->context;
645
646 if (urb->status)
647 snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status);
648 if (0 == --usX2Y->US04->len)
649 wake_up(&usX2Y->In04WaitQueue);
650 }
651
652 static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate)
653 {
654 int err = 0, i;
655 struct snd_usX2Y_urbSeq *us = NULL;
656 int *usbdata = NULL;
657 struct s_c2 *ra = rate == 48000 ? SetRate48000 : SetRate44100;
658
659 if (usX2Y->rate != rate) {
660 us = kzalloc(sizeof(*us) + sizeof(struct urb*) * NOOF_SETRATE_URBS, GFP_KERNEL);
661 if (NULL == us) {
662 err = -ENOMEM;
663 goto cleanup;
664 }
665 usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL);
666 if (NULL == usbdata) {
667 err = -ENOMEM;
668 goto cleanup;
669 }
670 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
671 if (NULL == (us->urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
672 err = -ENOMEM;
673 goto cleanup;
674 }
675 ((char*)(usbdata + i))[0] = ra[i].c1;
676 ((char*)(usbdata + i))[1] = ra[i].c2;
677 usb_fill_bulk_urb(us->urb[i], usX2Y->dev, usb_sndbulkpipe(usX2Y->dev, 4),
678 usbdata + i, 2, i_usX2Y_04Int, usX2Y);
679 }
680 err = usb_urb_ep_type_check(us->urb[0]);
681 if (err < 0)
682 goto cleanup;
683 us->submitted = 0;
684 us->len = NOOF_SETRATE_URBS;
685 usX2Y->US04 = us;
686 wait_event_timeout(usX2Y->In04WaitQueue, 0 == us->len, HZ);
687 usX2Y->US04 = NULL;
688 if (us->len)
689 err = -ENODEV;
690 cleanup:
691 if (us) {
692 us->submitted = 2*NOOF_SETRATE_URBS;
693 for (i = 0; i < NOOF_SETRATE_URBS; ++i) {
694 struct urb *urb = us->urb[i];
695 if (urb->status) {
696 if (!err)
697 err = -ENODEV;
698 usb_kill_urb(urb);
699 }
700 usb_free_urb(urb);
701 }
702 usX2Y->US04 = NULL;
703 kfree(usbdata);
704 kfree(us);
705 if (!err)
706 usX2Y->rate = rate;
707 }
708 }
709
710 return err;
711 }
712
713
714 static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format)
715 {
716 int alternate, err;
717 struct list_head* p;
718 if (format == SNDRV_PCM_FORMAT_S24_3LE) {
719 alternate = 2;
720 usX2Y->stride = 6;
721 } else {
722 alternate = 1;
723 usX2Y->stride = 4;
724 }
725 list_for_each(p, &usX2Y->midi_list) {
726 snd_usbmidi_input_stop(p);
727 }
728 usb_kill_urb(usX2Y->In04urb);
729 if ((err = usb_set_interface(usX2Y->dev, 0, alternate))) {
730 snd_printk(KERN_ERR "usb_set_interface error \n");
731 return err;
732 }
733 usX2Y->In04urb->dev = usX2Y->dev;
734 err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
735 list_for_each(p, &usX2Y->midi_list) {
736 snd_usbmidi_input_start(p);
737 }
738 usX2Y->format = format;
739 usX2Y->rate = 0;
740 return err;
741 }
742
743
744 static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream,
745 struct snd_pcm_hw_params *hw_params)
746 {
747 int err = 0;
748 unsigned int rate = params_rate(hw_params);
749 snd_pcm_format_t format = params_format(hw_params);
750 struct snd_card *card = substream->pstr->pcm->card;
751 struct usX2Ydev *dev = usX2Y(card);
752 int i;
753
754 mutex_lock(&usX2Y(card)->pcm_mutex);
755 snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params);
756 /* all pcm substreams off one usX2Y have to operate at the same
757 * rate & format
758 */
759 for (i = 0; i < dev->pcm_devs * 2; i++) {
760 struct snd_usX2Y_substream *subs = dev->subs[i];
761 struct snd_pcm_substream *test_substream;
762
763 if (!subs)
764 continue;
765 test_substream = subs->pcm_substream;
766 if (!test_substream || test_substream == substream ||
767 !test_substream->runtime)
768 continue;
769 if ((test_substream->runtime->format &&
770 test_substream->runtime->format != format) ||
771 (test_substream->runtime->rate &&
772 test_substream->runtime->rate != rate)) {
773 err = -EINVAL;
774 goto error;
775 }
776 }
777
778 err = snd_pcm_lib_malloc_pages(substream,
779 params_buffer_bytes(hw_params));
780 if (err < 0) {
781 snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n",
782 substream, params_buffer_bytes(hw_params), err);
783 goto error;
784 }
785
786 error:
787 mutex_unlock(&usX2Y(card)->pcm_mutex);
788 return err;
789 }
790
791 /*
792 * free the buffer
793 */
794 static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream)
795 {
796 struct snd_pcm_runtime *runtime = substream->runtime;
797 struct snd_usX2Y_substream *subs = runtime->private_data;
798 mutex_lock(&subs->usX2Y->pcm_mutex);
799 snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
800
801 if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
802 struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
803 atomic_set(&subs->state, state_STOPPED);
804 usX2Y_urbs_release(subs);
805 if (!cap_subs->pcm_substream ||
806 !cap_subs->pcm_substream->runtime ||
807 !cap_subs->pcm_substream->runtime->status ||
808 cap_subs->pcm_substream->runtime->status->state < SNDRV_PCM_STATE_PREPARED) {
809 atomic_set(&cap_subs->state, state_STOPPED);
810 usX2Y_urbs_release(cap_subs);
811 }
812 } else {
813 struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
814 if (atomic_read(&playback_subs->state) < state_PREPARED) {
815 atomic_set(&subs->state, state_STOPPED);
816 usX2Y_urbs_release(subs);
817 }
818 }
819 mutex_unlock(&subs->usX2Y->pcm_mutex);
820 return snd_pcm_lib_free_pages(substream);
821 }
822 /*
823 * prepare callback
824 *
825 * set format and initialize urbs
826 */
827 static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream)
828 {
829 struct snd_pcm_runtime *runtime = substream->runtime;
830 struct snd_usX2Y_substream *subs = runtime->private_data;
831 struct usX2Ydev *usX2Y = subs->usX2Y;
832 struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
833 int err = 0;
834 snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
835
836 mutex_lock(&usX2Y->pcm_mutex);
837 usX2Y_subs_prepare(subs);
838 // Start hardware streams
839 // SyncStream first....
840 if (atomic_read(&capsubs->state) < state_PREPARED) {
841 if (usX2Y->format != runtime->format)
842 if ((err = usX2Y_format_set(usX2Y, runtime->format)) < 0)
843 goto up_prepare_mutex;
844 if (usX2Y->rate != runtime->rate)
845 if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0)
846 goto up_prepare_mutex;
847 snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe");
848 if (0 > (err = usX2Y_urbs_start(capsubs)))
849 goto up_prepare_mutex;
850 }
851
852 if (subs != capsubs && atomic_read(&subs->state) < state_PREPARED)
853 err = usX2Y_urbs_start(subs);
854
855 up_prepare_mutex:
856 mutex_unlock(&usX2Y->pcm_mutex);
857 return err;
858 }
859
860 static struct snd_pcm_hardware snd_usX2Y_2c =
861 {
862 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
863 SNDRV_PCM_INFO_BLOCK_TRANSFER |
864 SNDRV_PCM_INFO_MMAP_VALID |
865 SNDRV_PCM_INFO_BATCH),
866 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE,
867 .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
868 .rate_min = 44100,
869 .rate_max = 48000,
870 .channels_min = 2,
871 .channels_max = 2,
872 .buffer_bytes_max = (2*128*1024),
873 .period_bytes_min = 64,
874 .period_bytes_max = (128*1024),
875 .periods_min = 2,
876 .periods_max = 1024,
877 .fifo_size = 0
878 };
879
880
881
882 static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream)
883 {
884 struct snd_usX2Y_substream *subs = ((struct snd_usX2Y_substream **)
885 snd_pcm_substream_chip(substream))[substream->stream];
886 struct snd_pcm_runtime *runtime = substream->runtime;
887
888 if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS)
889 return -EBUSY;
890
891 runtime->hw = snd_usX2Y_2c;
892 runtime->private_data = subs;
893 subs->pcm_substream = substream;
894 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 1000, 200000);
895 return 0;
896 }
897
898
899
900 static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream)
901 {
902 struct snd_pcm_runtime *runtime = substream->runtime;
903 struct snd_usX2Y_substream *subs = runtime->private_data;
904
905 subs->pcm_substream = NULL;
906
907 return 0;
908 }
909
910
911 static const struct snd_pcm_ops snd_usX2Y_pcm_ops =
912 {
913 .open = snd_usX2Y_pcm_open,
914 .close = snd_usX2Y_pcm_close,
915 .ioctl = snd_pcm_lib_ioctl,
916 .hw_params = snd_usX2Y_pcm_hw_params,
917 .hw_free = snd_usX2Y_pcm_hw_free,
918 .prepare = snd_usX2Y_pcm_prepare,
919 .trigger = snd_usX2Y_pcm_trigger,
920 .pointer = snd_usX2Y_pcm_pointer,
921 };
922
923
924 /*
925 * free a usb stream instance
926 */
927 static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream)
928 {
929 kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
930 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK] = NULL;
931
932 kfree(usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]);
933 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
934 }
935
936 static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm)
937 {
938 struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data;
939 if (usX2Y_stream)
940 usX2Y_audio_stream_free(usX2Y_stream);
941 }
942
943 static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint)
944 {
945 struct snd_pcm *pcm;
946 int err, i;
947 struct snd_usX2Y_substream **usX2Y_substream =
948 usX2Y(card)->subs + 2 * usX2Y(card)->pcm_devs;
949
950 for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
951 i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
952 usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL);
953 if (!usX2Y_substream[i])
954 return -ENOMEM;
955
956 usX2Y_substream[i]->usX2Y = usX2Y(card);
957 }
958
959 if (playback_endpoint)
960 usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]->endpoint = playback_endpoint;
961 usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE]->endpoint = capture_endpoint;
962
963 err = snd_pcm_new(card, NAME_ALLCAPS" Audio", usX2Y(card)->pcm_devs,
964 playback_endpoint ? 1 : 0, 1,
965 &pcm);
966 if (err < 0) {
967 usX2Y_audio_stream_free(usX2Y_substream);
968 return err;
969 }
970
971 if (playback_endpoint)
972 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_usX2Y_pcm_ops);
973 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_usX2Y_pcm_ops);
974
975 pcm->private_data = usX2Y_substream;
976 pcm->private_free = snd_usX2Y_pcm_private_free;
977 pcm->info_flags = 0;
978
979 sprintf(pcm->name, NAME_ALLCAPS" Audio #%d", usX2Y(card)->pcm_devs);
980
981 if ((playback_endpoint &&
982 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
983 SNDRV_DMA_TYPE_CONTINUOUS,
984 snd_dma_continuous_data(GFP_KERNEL),
985 64*1024, 128*1024))) ||
986 0 > (err = snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
987 SNDRV_DMA_TYPE_CONTINUOUS,
988 snd_dma_continuous_data(GFP_KERNEL),
989 64*1024, 128*1024))) {
990 snd_usX2Y_pcm_private_free(pcm);
991 return err;
992 }
993 usX2Y(card)->pcm_devs++;
994
995 return 0;
996 }
997
998 /*
999 * create a chip instance and set its names.
1000 */
1001 int usX2Y_audio_create(struct snd_card *card)
1002 {
1003 int err = 0;
1004
1005 INIT_LIST_HEAD(&usX2Y(card)->pcm_list);
1006
1007 if (0 > (err = usX2Y_audio_stream_new(card, 0xA, 0x8)))
1008 return err;
1009 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) == USB_ID_US428)
1010 if (0 > (err = usX2Y_audio_stream_new(card, 0, 0xA)))
1011 return err;
1012 if (le16_to_cpu(usX2Y(card)->dev->descriptor.idProduct) != USB_ID_US122)
1013 err = usX2Y_rate_set(usX2Y(card), 44100); // Lets us428 recognize output-volume settings, disturbs us122.
1014 return err;
1015 }
Linux with added FPC-III support