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x86: implement gbpages support in change_page_attr()
[wrt350n-kernel.git] / sound / usb / caiaq / caiaq-audio.c
blob9cc4cd8283f91561d744641b0afbead6e8b0495a
1 /*
2 * Copyright (c) 2006,2007 Daniel Mack, Karsten Wiese
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19 #include <linux/init.h>
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/interrupt.h>
23 #include <linux/usb.h>
24 #include <linux/spinlock.h>
25 #include <sound/core.h>
26 #include <sound/initval.h>
27 #include <sound/pcm.h>
28 #include <sound/rawmidi.h>
29 #include <linux/input.h>
30
31 #include "caiaq-device.h"
32 #include "caiaq-audio.h"
33
34 #define N_URBS 32
35 #define CLOCK_DRIFT_TOLERANCE 5
36 #define FRAMES_PER_URB 8
37 #define BYTES_PER_FRAME 512
38 #define CHANNELS_PER_STREAM 2
39 #define BYTES_PER_SAMPLE 3
40 #define BYTES_PER_SAMPLE_USB 4
41 #define MAX_BUFFER_SIZE (128*1024)
42
43 #define ENDPOINT_CAPTURE 2
44 #define ENDPOINT_PLAYBACK 6
45
46 #define MAKE_CHECKBYTE(dev,stream,i) \
47 (stream << 1) | (~(i / (dev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
48
49 static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
50 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
51 SNDRV_PCM_INFO_BLOCK_TRANSFER),
52 .formats = SNDRV_PCM_FMTBIT_S24_3BE,
53 .rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
54 SNDRV_PCM_RATE_96000),
55 .rate_min = 44100,
56 .rate_max = 0, /* will overwrite later */
57 .channels_min = CHANNELS_PER_STREAM,
58 .channels_max = CHANNELS_PER_STREAM,
59 .buffer_bytes_max = MAX_BUFFER_SIZE,
60 .period_bytes_min = 128,
61 .period_bytes_max = MAX_BUFFER_SIZE,
62 .periods_min = 1,
63 .periods_max = 1024,
64 };
65
66 static void
67 activate_substream(struct snd_usb_caiaqdev *dev,
68 struct snd_pcm_substream *sub)
69 {
70 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
71 dev->sub_playback[sub->number] = sub;
72 else
73 dev->sub_capture[sub->number] = sub;
74 }
75
76 static void
77 deactivate_substream(struct snd_usb_caiaqdev *dev,
78 struct snd_pcm_substream *sub)
79 {
80 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
81 dev->sub_playback[sub->number] = NULL;
82 else
83 dev->sub_capture[sub->number] = NULL;
84 }
85
86 static int
87 all_substreams_zero(struct snd_pcm_substream **subs)
88 {
89 int i;
90 for (i = 0; i < MAX_STREAMS; i++)
91 if (subs[i] != NULL)
92 return 0;
93 return 1;
94 }
95
96 static int stream_start(struct snd_usb_caiaqdev *dev)
97 {
98 int i, ret;
99
100 debug("stream_start(%p)\n", dev);
101 spin_lock_irq(&dev->spinlock);
102 if (dev->streaming) {
103 spin_unlock_irq(&dev->spinlock);
104 return -EINVAL;
105 }
106
107 dev->input_panic = 0;
108 dev->output_panic = 0;
109 dev->first_packet = 1;
110 dev->streaming = 1;
111
112 for (i = 0; i < N_URBS; i++) {
113 ret = usb_submit_urb(dev->data_urbs_in[i], GFP_ATOMIC);
114 if (ret) {
115 log("unable to trigger initial read #%d! (ret = %d)\n",
116 i, ret);
117 dev->streaming = 0;
118 spin_unlock_irq(&dev->spinlock);
119 return -EPIPE;
120 }
121 }
122
123 spin_unlock_irq(&dev->spinlock);
124 return 0;
125 }
126
127 static void stream_stop(struct snd_usb_caiaqdev *dev)
128 {
129 int i;
130
131 debug("stream_stop(%p)\n", dev);
132 if (!dev->streaming)
133 return;
134
135 dev->streaming = 0;
136 for (i = 0; i < N_URBS; i++) {
137 usb_unlink_urb(dev->data_urbs_in[i]);
138 usb_unlink_urb(dev->data_urbs_out[i]);
139 }
140 }
141
142 static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
143 {
144 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
145 debug("snd_usb_caiaq_substream_open(%p)\n", substream);
146 substream->runtime->hw = dev->pcm_info;
147 snd_pcm_limit_hw_rates(substream->runtime);
148 return 0;
149 }
150
151 static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
152 {
153 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
154
155 debug("snd_usb_caiaq_substream_close(%p)\n", substream);
156 if (all_substreams_zero(dev->sub_playback) &&
157 all_substreams_zero(dev->sub_capture)) {
158 /* when the last client has stopped streaming,
159 * all sample rates are allowed again */
160 stream_stop(dev);
161 dev->pcm_info.rates = dev->samplerates;
162 }
163
164 return 0;
165 }
166
167 static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
168 struct snd_pcm_hw_params *hw_params)
169 {
170 debug("snd_usb_caiaq_pcm_hw_params(%p)\n", sub);
171 return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
172 }
173
174 static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
175 {
176 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
177 debug("snd_usb_caiaq_pcm_hw_free(%p)\n", sub);
178 spin_lock_irq(&dev->spinlock);
179 deactivate_substream(dev, sub);
180 spin_unlock_irq(&dev->spinlock);
181 return snd_pcm_lib_free_pages(sub);
182 }
183
184 /* this should probably go upstream */
185 #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12
186 #error "Change this table"
187 #endif
188
189 static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
190 48000, 64000, 88200, 96000, 176400, 192000 };
191
192 static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
193 {
194 int bytes_per_sample, bpp, ret, i;
195 int index = substream->number;
196 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
197 struct snd_pcm_runtime *runtime = substream->runtime;
198
199 debug("snd_usb_caiaq_pcm_prepare(%p)\n", substream);
200
201 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
202 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
203 else
204 dev->audio_in_buf_pos[index] = 0;
205
206 if (dev->streaming)
207 return 0;
208
209 /* the first client that opens a stream defines the sample rate
210 * setting for all subsequent calls, until the last client closed. */
211 for (i=0; i < ARRAY_SIZE(rates); i++)
212 if (runtime->rate == rates[i])
213 dev->pcm_info.rates = 1 << i;
214
215 snd_pcm_limit_hw_rates(runtime);
216
217 bytes_per_sample = BYTES_PER_SAMPLE;
218 if (dev->spec.data_alignment == 2)
219 bytes_per_sample++;
220
221 bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
222 * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
223
224 ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate,
225 runtime->sample_bits, bpp);
226 if (ret)
227 return ret;
228
229 ret = stream_start(dev);
230 if (ret)
231 return ret;
232
233 dev->output_running = 0;
234 wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ);
235 if (!dev->output_running) {
236 stream_stop(dev);
237 return -EPIPE;
238 }
239
240 return 0;
241 }
242
243 static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd)
244 {
245 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
246
247 switch (cmd) {
248 case SNDRV_PCM_TRIGGER_START:
249 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
250 spin_lock(&dev->spinlock);
251 activate_substream(dev, sub);
252 spin_unlock(&dev->spinlock);
253 break;
254 case SNDRV_PCM_TRIGGER_STOP:
255 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
256 spin_lock(&dev->spinlock);
257 deactivate_substream(dev, sub);
258 spin_unlock(&dev->spinlock);
259 break;
260 default:
261 return -EINVAL;
262 }
263
264 return 0;
265 }
266
267 static snd_pcm_uframes_t
268 snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
269 {
270 int index = sub->number;
271 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
272
273 if (dev->input_panic || dev->output_panic)
274 return SNDRV_PCM_POS_XRUN;
275
276 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
277 return bytes_to_frames(sub->runtime,
278 dev->audio_out_buf_pos[index]);
279 else
280 return bytes_to_frames(sub->runtime,
281 dev->audio_in_buf_pos[index]);
282 }
283
284 /* operators for both playback and capture */
285 static struct snd_pcm_ops snd_usb_caiaq_ops = {
286 .open = snd_usb_caiaq_substream_open,
287 .close = snd_usb_caiaq_substream_close,
288 .ioctl = snd_pcm_lib_ioctl,
289 .hw_params = snd_usb_caiaq_pcm_hw_params,
290 .hw_free = snd_usb_caiaq_pcm_hw_free,
291 .prepare = snd_usb_caiaq_pcm_prepare,
292 .trigger = snd_usb_caiaq_pcm_trigger,
293 .pointer = snd_usb_caiaq_pcm_pointer
294 };
295
296 static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
297 struct snd_pcm_substream **subs)
298 {
299 int stream, pb, *cnt;
300 struct snd_pcm_substream *sub;
301
302 for (stream = 0; stream < dev->n_streams; stream++) {
303 sub = subs[stream];
304 if (!sub)
305 continue;
306
307 pb = frames_to_bytes(sub->runtime,
308 sub->runtime->period_size);
309 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
310 &dev->period_out_count[stream] :
311 &dev->period_in_count[stream];
312
313 if (*cnt >= pb) {
314 snd_pcm_period_elapsed(sub);
315 *cnt %= pb;
316 }
317 }
318 }
319
320 static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
321 const struct urb *urb,
322 const struct usb_iso_packet_descriptor *iso)
323 {
324 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
325 struct snd_pcm_substream *sub;
326 int stream, i;
327
328 if (all_substreams_zero(dev->sub_capture))
329 return;
330
331 spin_lock(&dev->spinlock);
332
333 for (i = 0; i < iso->actual_length;) {
334 for (stream = 0; stream < dev->n_streams; stream++, i++) {
335 sub = dev->sub_capture[stream];
336 if (sub) {
337 struct snd_pcm_runtime *rt = sub->runtime;
338 char *audio_buf = rt->dma_area;
339 int sz = frames_to_bytes(rt, rt->buffer_size);
340 audio_buf[dev->audio_in_buf_pos[stream]++]
341 = usb_buf[i];
342 dev->period_in_count[stream]++;
343 if (dev->audio_in_buf_pos[stream] == sz)
344 dev->audio_in_buf_pos[stream] = 0;
345 }
346 }
347 }
348
349 spin_unlock(&dev->spinlock);
350 }
351
352 static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
353 const struct urb *urb,
354 const struct usb_iso_packet_descriptor *iso)
355 {
356 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
357 unsigned char check_byte;
358 struct snd_pcm_substream *sub;
359 int stream, i;
360
361 spin_lock(&dev->spinlock);
362
363 for (i = 0; i < iso->actual_length;) {
364 if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
365 for (stream = 0;
366 stream < dev->n_streams;
367 stream++, i++) {
368 if (dev->first_packet)
369 continue;
370
371 check_byte = MAKE_CHECKBYTE(dev, stream, i);
372
373 if ((usb_buf[i] & 0x3f) != check_byte)
374 dev->input_panic = 1;
375
376 if (usb_buf[i] & 0x80)
377 dev->output_panic = 1;
378 }
379 }
380 dev->first_packet = 0;
381
382 for (stream = 0; stream < dev->n_streams; stream++, i++) {
383 sub = dev->sub_capture[stream];
384 if (sub) {
385 struct snd_pcm_runtime *rt = sub->runtime;
386 char *audio_buf = rt->dma_area;
387 int sz = frames_to_bytes(rt, rt->buffer_size);
388 audio_buf[dev->audio_in_buf_pos[stream]++] =
389 usb_buf[i];
390 dev->period_in_count[stream]++;
391 if (dev->audio_in_buf_pos[stream] == sz)
392 dev->audio_in_buf_pos[stream] = 0;
393 }
394 }
395 }
396
397 spin_unlock(&dev->spinlock);
398 }
399
400 static void read_in_urb(struct snd_usb_caiaqdev *dev,
401 const struct urb *urb,
402 const struct usb_iso_packet_descriptor *iso)
403 {
404 if (!dev->streaming)
405 return;
406
407 switch (dev->spec.data_alignment) {
408 case 0:
409 read_in_urb_mode0(dev, urb, iso);
410 break;
411 case 2:
412 read_in_urb_mode2(dev, urb, iso);
413 break;
414 }
415
416 if (dev->input_panic || dev->output_panic) {
417 debug("streaming error detected %s %s\n",
418 dev->input_panic ? "(input)" : "",
419 dev->output_panic ? "(output)" : "");
420 }
421
422 check_for_elapsed_periods(dev, dev->sub_capture);
423 }
424
425 static void fill_out_urb(struct snd_usb_caiaqdev *dev,
426 struct urb *urb,
427 const struct usb_iso_packet_descriptor *iso)
428 {
429 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
430 struct snd_pcm_substream *sub;
431 int stream, i;
432
433 spin_lock(&dev->spinlock);
434
435 for (i = 0; i < iso->length;) {
436 for (stream = 0; stream < dev->n_streams; stream++, i++) {
437 sub = dev->sub_playback[stream];
438 if (sub) {
439 struct snd_pcm_runtime *rt = sub->runtime;
440 char *audio_buf = rt->dma_area;
441 int sz = frames_to_bytes(rt, rt->buffer_size);
442 usb_buf[i] =
443 audio_buf[dev->audio_out_buf_pos[stream]];
444 dev->period_out_count[stream]++;
445 dev->audio_out_buf_pos[stream]++;
446 if (dev->audio_out_buf_pos[stream] == sz)
447 dev->audio_out_buf_pos[stream] = 0;
448 } else
449 usb_buf[i] = 0;
450 }
451
452 /* fill in the check bytes */
453 if (dev->spec.data_alignment == 2 &&
454 i % (dev->n_streams * BYTES_PER_SAMPLE_USB) ==
455 (dev->n_streams * CHANNELS_PER_STREAM))
456 for (stream = 0; stream < dev->n_streams; stream++, i++)
457 usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i);
458 }
459
460 spin_unlock(&dev->spinlock);
461 check_for_elapsed_periods(dev, dev->sub_playback);
462 }
463
464 static void read_completed(struct urb *urb)
465 {
466 struct snd_usb_caiaq_cb_info *info = urb->context;
467 struct snd_usb_caiaqdev *dev;
468 struct urb *out;
469 int frame, len, send_it = 0, outframe = 0;
470
471 if (urb->status || !info)
472 return;
473
474 dev = info->dev;
475 if (!dev->streaming)
476 return;
477
478 out = dev->data_urbs_out[info->index];
479
480 /* read the recently received packet and send back one which has
481 * the same layout */
482 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
483 if (urb->iso_frame_desc[frame].status)
484 continue;
485
486 len = urb->iso_frame_desc[outframe].actual_length;
487 out->iso_frame_desc[outframe].length = len;
488 out->iso_frame_desc[outframe].actual_length = 0;
489 out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;
490
491 if (len > 0) {
492 fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
493 read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
494 send_it = 1;
495 }
496
497 outframe++;
498 }
499
500 if (send_it) {
501 out->number_of_packets = FRAMES_PER_URB;
502 out->transfer_flags = URB_ISO_ASAP;
503 usb_submit_urb(out, GFP_ATOMIC);
504 }
505
506 /* re-submit inbound urb */
507 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
508 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
509 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
510 urb->iso_frame_desc[frame].actual_length = 0;
511 }
512
513 urb->number_of_packets = FRAMES_PER_URB;
514 urb->transfer_flags = URB_ISO_ASAP;
515 usb_submit_urb(urb, GFP_ATOMIC);
516 }
517
518 static void write_completed(struct urb *urb)
519 {
520 struct snd_usb_caiaq_cb_info *info = urb->context;
521 struct snd_usb_caiaqdev *dev = info->dev;
522
523 if (!dev->output_running) {
524 dev->output_running = 1;
525 wake_up(&dev->prepare_wait_queue);
526 }
527 }
528
529 static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
530 {
531 int i, frame;
532 struct urb **urbs;
533 struct usb_device *usb_dev = dev->chip.dev;
534 unsigned int pipe;
535
536 pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
537 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) :
538 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE);
539
540 urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL);
541 if (!urbs) {
542 log("unable to kmalloc() urbs, OOM!?\n");
543 *ret = -ENOMEM;
544 return NULL;
545 }
546
547 for (i = 0; i < N_URBS; i++) {
548 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL);
549 if (!urbs[i]) {
550 log("unable to usb_alloc_urb(), OOM!?\n");
551 *ret = -ENOMEM;
552 return urbs;
553 }
554
555 urbs[i]->transfer_buffer =
556 kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL);
557 if (!urbs[i]->transfer_buffer) {
558 log("unable to kmalloc() transfer buffer, OOM!?\n");
559 *ret = -ENOMEM;
560 return urbs;
561 }
562
563 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
564 struct usb_iso_packet_descriptor *iso =
565 &urbs[i]->iso_frame_desc[frame];
566
567 iso->offset = BYTES_PER_FRAME * frame;
568 iso->length = BYTES_PER_FRAME;
569 }
570
571 urbs[i]->dev = usb_dev;
572 urbs[i]->pipe = pipe;
573 urbs[i]->transfer_buffer_length = FRAMES_PER_URB
574 * BYTES_PER_FRAME;
575 urbs[i]->context = &dev->data_cb_info[i];
576 urbs[i]->interval = 1;
577 urbs[i]->transfer_flags = URB_ISO_ASAP;
578 urbs[i]->number_of_packets = FRAMES_PER_URB;
579 urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ?
580 read_completed : write_completed;
581 }
582
583 *ret = 0;
584 return urbs;
585 }
586
587 static void free_urbs(struct urb **urbs)
588 {
589 int i;
590
591 if (!urbs)
592 return;
593
594 for (i = 0; i < N_URBS; i++) {
595 if (!urbs[i])
596 continue;
597
598 usb_kill_urb(urbs[i]);
599 kfree(urbs[i]->transfer_buffer);
600 usb_free_urb(urbs[i]);
601 }
602
603 kfree(urbs);
604 }
605
606 int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
607 {
608 int i, ret;
609
610 dev->n_audio_in = max(dev->spec.num_analog_audio_in,
611 dev->spec.num_digital_audio_in) /
612 CHANNELS_PER_STREAM;
613 dev->n_audio_out = max(dev->spec.num_analog_audio_out,
614 dev->spec.num_digital_audio_out) /
615 CHANNELS_PER_STREAM;
616 dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
617
618 debug("dev->n_audio_in = %d\n", dev->n_audio_in);
619 debug("dev->n_audio_out = %d\n", dev->n_audio_out);
620 debug("dev->n_streams = %d\n", dev->n_streams);
621
622 if (dev->n_streams > MAX_STREAMS) {
623 log("unable to initialize device, too many streams.\n");
624 return -EINVAL;
625 }
626
627 ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
628 dev->n_audio_out, dev->n_audio_in, &dev->pcm);
629
630 if (ret < 0) {
631 log("snd_pcm_new() returned %d\n", ret);
632 return ret;
633 }
634
635 dev->pcm->private_data = dev;
636 strcpy(dev->pcm->name, dev->product_name);
637
638 memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
639 memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
640
641 memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
642 sizeof(snd_usb_caiaq_pcm_hardware));
643
644 /* setup samplerates */
645 dev->samplerates = dev->pcm_info.rates;
646 switch (dev->chip.usb_id) {
647 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
648 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
649 dev->samplerates |= SNDRV_PCM_RATE_88200;
650 dev->samplerates |= SNDRV_PCM_RATE_192000;
651 break;
652 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
653 dev->samplerates |= SNDRV_PCM_RATE_88200;
654 break;
655 }
656
657 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
658 &snd_usb_caiaq_ops);
659 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
660 &snd_usb_caiaq_ops);
661
662 snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
663 SNDRV_DMA_TYPE_CONTINUOUS,
664 snd_dma_continuous_data(GFP_KERNEL),
665 MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
666
667 dev->data_cb_info =
668 kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
669 GFP_KERNEL);
670
671 if (!dev->data_cb_info)
672 return -ENOMEM;
673
674 for (i = 0; i < N_URBS; i++) {
675 dev->data_cb_info[i].dev = dev;
676 dev->data_cb_info[i].index = i;
677 }
678
679 dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
680 if (ret < 0) {
681 kfree(dev->data_cb_info);
682 free_urbs(dev->data_urbs_in);
683 return ret;
684 }
685
686 dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
687 if (ret < 0) {
688 kfree(dev->data_cb_info);
689 free_urbs(dev->data_urbs_in);
690 free_urbs(dev->data_urbs_out);
691 return ret;
692 }
693
694 return 0;
695 }
696
697 void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev)
698 {
699 debug("snd_usb_caiaq_audio_free (%p)\n", dev);
700 stream_stop(dev);
701 free_urbs(dev->data_urbs_in);
702 free_urbs(dev->data_urbs_out);
703 kfree(dev->data_cb_info);
704 }
705
WRT350N Kernel Patches