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-rw-r--r--sound/usb/caiaq/audio.c700
1 files changed, 700 insertions, 0 deletions
diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
new file mode 100644
index 000000000000..3f45c0fe61ab
--- /dev/null
+++ b/sound/usb/caiaq/audio.c
@@ -0,0 +1,700 @@
1/*
2 * Copyright (c) 2006-2008 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/spinlock.h>
20#include <linux/init.h>
21#include <linux/usb.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24
25#include "device.h"
26#include "audio.h"
27
28#define N_URBS 32
29#define CLOCK_DRIFT_TOLERANCE 5
30#define FRAMES_PER_URB 8
31#define BYTES_PER_FRAME 512
32#define CHANNELS_PER_STREAM 2
33#define BYTES_PER_SAMPLE 3
34#define BYTES_PER_SAMPLE_USB 4
35#define MAX_BUFFER_SIZE (128*1024)
36#define MAX_ENDPOINT_SIZE 512
37
38#define ENDPOINT_CAPTURE 2
39#define ENDPOINT_PLAYBACK 6
40
41#define MAKE_CHECKBYTE(dev,stream,i) \
42 (stream << 1) | (~(i / (dev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
43
44static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
45 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
46 SNDRV_PCM_INFO_BLOCK_TRANSFER),
47 .formats = SNDRV_PCM_FMTBIT_S24_3BE,
48 .rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
49 SNDRV_PCM_RATE_96000),
50 .rate_min = 44100,
51 .rate_max = 0, /* will overwrite later */
52 .channels_min = CHANNELS_PER_STREAM,
53 .channels_max = CHANNELS_PER_STREAM,
54 .buffer_bytes_max = MAX_BUFFER_SIZE,
55 .period_bytes_min = 128,
56 .period_bytes_max = MAX_BUFFER_SIZE,
57 .periods_min = 1,
58 .periods_max = 1024,
59};
60
61static void
62activate_substream(struct snd_usb_caiaqdev *dev,
63 struct snd_pcm_substream *sub)
64{
65 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
66 dev->sub_playback[sub->number] = sub;
67 else
68 dev->sub_capture[sub->number] = sub;
69}
70
71static void
72deactivate_substream(struct snd_usb_caiaqdev *dev,
73 struct snd_pcm_substream *sub)
74{
75 unsigned long flags;
76 spin_lock_irqsave(&dev->spinlock, flags);
77
78 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
79 dev->sub_playback[sub->number] = NULL;
80 else
81 dev->sub_capture[sub->number] = NULL;
82
83 spin_unlock_irqrestore(&dev->spinlock, flags);
84}
85
86static int
87all_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
96static int stream_start(struct snd_usb_caiaqdev *dev)
97{
98 int i, ret;
99
100 debug("%s(%p)\n", __func__, dev);
101
102 if (dev->streaming)
103 return -EINVAL;
104
105 memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
106 memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
107 dev->input_panic = 0;
108 dev->output_panic = 0;
109 dev->first_packet = 1;
110 dev->streaming = 1;
111 dev->warned = 0;
112
113 for (i = 0; i < N_URBS; i++) {
114 ret = usb_submit_urb(dev->data_urbs_in[i], GFP_ATOMIC);
115 if (ret) {
116 log("unable to trigger read #%d! (ret %d)\n", i, ret);
117 dev->streaming = 0;
118 return -EPIPE;
119 }
120 }
121
122 return 0;
123}
124
125static void stream_stop(struct snd_usb_caiaqdev *dev)
126{
127 int i;
128
129 debug("%s(%p)\n", __func__, dev);
130 if (!dev->streaming)
131 return;
132
133 dev->streaming = 0;
134
135 for (i = 0; i < N_URBS; i++) {
136 usb_kill_urb(dev->data_urbs_in[i]);
137 usb_kill_urb(dev->data_urbs_out[i]);
138 }
139}
140
141static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
142{
143 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
144 debug("%s(%p)\n", __func__, substream);
145 substream->runtime->hw = dev->pcm_info;
146 snd_pcm_limit_hw_rates(substream->runtime);
147 return 0;
148}
149
150static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
151{
152 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
153
154 debug("%s(%p)\n", __func__, substream);
155 if (all_substreams_zero(dev->sub_playback) &&
156 all_substreams_zero(dev->sub_capture)) {
157 /* when the last client has stopped streaming,
158 * all sample rates are allowed again */
159 stream_stop(dev);
160 dev->pcm_info.rates = dev->samplerates;
161 }
162
163 return 0;
164}
165
166static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
167 struct snd_pcm_hw_params *hw_params)
168{
169 debug("%s(%p)\n", __func__, sub);
170 return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
171}
172
173static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
174{
175 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
176 debug("%s(%p)\n", __func__, sub);
177 deactivate_substream(dev, sub);
178 return snd_pcm_lib_free_pages(sub);
179}
180
181/* this should probably go upstream */
182#if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12
183#error "Change this table"
184#endif
185
186static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
187 48000, 64000, 88200, 96000, 176400, 192000 };
188
189static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
190{
191 int bytes_per_sample, bpp, ret, i;
192 int index = substream->number;
193 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
194 struct snd_pcm_runtime *runtime = substream->runtime;
195
196 debug("%s(%p)\n", __func__, substream);
197
198 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
199 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
200 else
201 dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE;
202
203 if (dev->streaming)
204 return 0;
205
206 /* the first client that opens a stream defines the sample rate
207 * setting for all subsequent calls, until the last client closed. */
208 for (i=0; i < ARRAY_SIZE(rates); i++)
209 if (runtime->rate == rates[i])
210 dev->pcm_info.rates = 1 << i;
211
212 snd_pcm_limit_hw_rates(runtime);
213
214 bytes_per_sample = BYTES_PER_SAMPLE;
215 if (dev->spec.data_alignment == 2)
216 bytes_per_sample++;
217
218 bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
219 * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
220
221 if (bpp > MAX_ENDPOINT_SIZE)
222 bpp = MAX_ENDPOINT_SIZE;
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
243static 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 activate_substream(dev, sub);
251 break;
252 case SNDRV_PCM_TRIGGER_STOP:
253 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
254 deactivate_substream(dev, sub);
255 break;
256 default:
257 return -EINVAL;
258 }
259
260 return 0;
261}
262
263static snd_pcm_uframes_t
264snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
265{
266 int index = sub->number;
267 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
268
269 if (dev->input_panic || dev->output_panic)
270 return SNDRV_PCM_POS_XRUN;
271
272 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
273 return bytes_to_frames(sub->runtime,
274 dev->audio_out_buf_pos[index]);
275 else
276 return bytes_to_frames(sub->runtime,
277 dev->audio_in_buf_pos[index]);
278}
279
280/* operators for both playback and capture */
281static struct snd_pcm_ops snd_usb_caiaq_ops = {
282 .open = snd_usb_caiaq_substream_open,
283 .close = snd_usb_caiaq_substream_close,
284 .ioctl = snd_pcm_lib_ioctl,
285 .hw_params = snd_usb_caiaq_pcm_hw_params,
286 .hw_free = snd_usb_caiaq_pcm_hw_free,
287 .prepare = snd_usb_caiaq_pcm_prepare,
288 .trigger = snd_usb_caiaq_pcm_trigger,
289 .pointer = snd_usb_caiaq_pcm_pointer
290};
291
292static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
293 struct snd_pcm_substream **subs)
294{
295 int stream, pb, *cnt;
296 struct snd_pcm_substream *sub;
297
298 for (stream = 0; stream < dev->n_streams; stream++) {
299 sub = subs[stream];
300 if (!sub)
301 continue;
302
303 pb = frames_to_bytes(sub->runtime,
304 sub->runtime->period_size);
305 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
306 &dev->period_out_count[stream] :
307 &dev->period_in_count[stream];
308
309 if (*cnt >= pb) {
310 snd_pcm_period_elapsed(sub);
311 *cnt %= pb;
312 }
313 }
314}
315
316static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
317 const struct urb *urb,
318 const struct usb_iso_packet_descriptor *iso)
319{
320 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
321 struct snd_pcm_substream *sub;
322 int stream, i;
323
324 if (all_substreams_zero(dev->sub_capture))
325 return;
326
327 for (i = 0; i < iso->actual_length;) {
328 for (stream = 0; stream < dev->n_streams; stream++, i++) {
329 sub = dev->sub_capture[stream];
330 if (sub) {
331 struct snd_pcm_runtime *rt = sub->runtime;
332 char *audio_buf = rt->dma_area;
333 int sz = frames_to_bytes(rt, rt->buffer_size);
334 audio_buf[dev->audio_in_buf_pos[stream]++]
335 = usb_buf[i];
336 dev->period_in_count[stream]++;
337 if (dev->audio_in_buf_pos[stream] == sz)
338 dev->audio_in_buf_pos[stream] = 0;
339 }
340 }
341 }
342}
343
344static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
345 const struct urb *urb,
346 const struct usb_iso_packet_descriptor *iso)
347{
348 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
349 unsigned char check_byte;
350 struct snd_pcm_substream *sub;
351 int stream, i;
352
353 for (i = 0; i < iso->actual_length;) {
354 if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
355 for (stream = 0;
356 stream < dev->n_streams;
357 stream++, i++) {
358 if (dev->first_packet)
359 continue;
360
361 check_byte = MAKE_CHECKBYTE(dev, stream, i);
362
363 if ((usb_buf[i] & 0x3f) != check_byte)
364 dev->input_panic = 1;
365
366 if (usb_buf[i] & 0x80)
367 dev->output_panic = 1;
368 }
369 }
370 dev->first_packet = 0;
371
372 for (stream = 0; stream < dev->n_streams; stream++, i++) {
373 sub = dev->sub_capture[stream];
374 if (dev->input_panic)
375 usb_buf[i] = 0;
376
377 if (sub) {
378 struct snd_pcm_runtime *rt = sub->runtime;
379 char *audio_buf = rt->dma_area;
380 int sz = frames_to_bytes(rt, rt->buffer_size);
381 audio_buf[dev->audio_in_buf_pos[stream]++] =
382 usb_buf[i];
383 dev->period_in_count[stream]++;
384 if (dev->audio_in_buf_pos[stream] == sz)
385 dev->audio_in_buf_pos[stream] = 0;
386 }
387 }
388 }
389}
390
391static void read_in_urb(struct snd_usb_caiaqdev *dev,
392 const struct urb *urb,
393 const struct usb_iso_packet_descriptor *iso)
394{
395 if (!dev->streaming)
396 return;
397
398 if (iso->actual_length < dev->bpp)
399 return;
400
401 switch (dev->spec.data_alignment) {
402 case 0:
403 read_in_urb_mode0(dev, urb, iso);
404 break;
405 case 2:
406 read_in_urb_mode2(dev, urb, iso);
407 break;
408 }
409
410 if ((dev->input_panic || dev->output_panic) && !dev->warned) {
411 debug("streaming error detected %s %s\n",
412 dev->input_panic ? "(input)" : "",
413 dev->output_panic ? "(output)" : "");
414 dev->warned = 1;
415 }
416}
417
418static void fill_out_urb(struct snd_usb_caiaqdev *dev,
419 struct urb *urb,
420 const struct usb_iso_packet_descriptor *iso)
421{
422 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
423 struct snd_pcm_substream *sub;
424 int stream, i;
425
426 for (i = 0; i < iso->length;) {
427 for (stream = 0; stream < dev->n_streams; stream++, i++) {
428 sub = dev->sub_playback[stream];
429 if (sub) {
430 struct snd_pcm_runtime *rt = sub->runtime;
431 char *audio_buf = rt->dma_area;
432 int sz = frames_to_bytes(rt, rt->buffer_size);
433 usb_buf[i] =
434 audio_buf[dev->audio_out_buf_pos[stream]];
435 dev->period_out_count[stream]++;
436 dev->audio_out_buf_pos[stream]++;
437 if (dev->audio_out_buf_pos[stream] == sz)
438 dev->audio_out_buf_pos[stream] = 0;
439 } else
440 usb_buf[i] = 0;
441 }
442
443 /* fill in the check bytes */
444 if (dev->spec.data_alignment == 2 &&
445 i % (dev->n_streams * BYTES_PER_SAMPLE_USB) ==
446 (dev->n_streams * CHANNELS_PER_STREAM))
447 for (stream = 0; stream < dev->n_streams; stream++, i++)
448 usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i);
449 }
450}
451
452static void read_completed(struct urb *urb)
453{
454 struct snd_usb_caiaq_cb_info *info = urb->context;
455 struct snd_usb_caiaqdev *dev;
456 struct urb *out;
457 int frame, len, send_it = 0, outframe = 0;
458
459 if (urb->status || !info)
460 return;
461
462 dev = info->dev;
463
464 if (!dev->streaming)
465 return;
466
467 out = dev->data_urbs_out[info->index];
468
469 /* read the recently received packet and send back one which has
470 * the same layout */
471 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
472 if (urb->iso_frame_desc[frame].status)
473 continue;
474
475 len = urb->iso_frame_desc[outframe].actual_length;
476 out->iso_frame_desc[outframe].length = len;
477 out->iso_frame_desc[outframe].actual_length = 0;
478 out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;
479
480 if (len > 0) {
481 spin_lock(&dev->spinlock);
482 fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
483 read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
484 spin_unlock(&dev->spinlock);
485 check_for_elapsed_periods(dev, dev->sub_playback);
486 check_for_elapsed_periods(dev, dev->sub_capture);
487 send_it = 1;
488 }
489
490 outframe++;
491 }
492
493 if (send_it) {
494 out->number_of_packets = FRAMES_PER_URB;
495 out->transfer_flags = URB_ISO_ASAP;
496 usb_submit_urb(out, GFP_ATOMIC);
497 }
498
499 /* re-submit inbound urb */
500 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
501 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
502 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
503 urb->iso_frame_desc[frame].actual_length = 0;
504 }
505
506 urb->number_of_packets = FRAMES_PER_URB;
507 urb->transfer_flags = URB_ISO_ASAP;
508 usb_submit_urb(urb, GFP_ATOMIC);
509}
510
511static void write_completed(struct urb *urb)
512{
513 struct snd_usb_caiaq_cb_info *info = urb->context;
514 struct snd_usb_caiaqdev *dev = info->dev;
515
516 if (!dev->output_running) {
517 dev->output_running = 1;
518 wake_up(&dev->prepare_wait_queue);
519 }
520}
521
522static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
523{
524 int i, frame;
525 struct urb **urbs;
526 struct usb_device *usb_dev = dev->chip.dev;
527 unsigned int pipe;
528
529 pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
530 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) :
531 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE);
532
533 urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL);
534 if (!urbs) {
535 log("unable to kmalloc() urbs, OOM!?\n");
536 *ret = -ENOMEM;
537 return NULL;
538 }
539
540 for (i = 0; i < N_URBS; i++) {
541 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL);
542 if (!urbs[i]) {
543 log("unable to usb_alloc_urb(), OOM!?\n");
544 *ret = -ENOMEM;
545 return urbs;
546 }
547
548 urbs[i]->transfer_buffer =
549 kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL);
550 if (!urbs[i]->transfer_buffer) {
551 log("unable to kmalloc() transfer buffer, OOM!?\n");
552 *ret = -ENOMEM;
553 return urbs;
554 }
555
556 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
557 struct usb_iso_packet_descriptor *iso =
558 &urbs[i]->iso_frame_desc[frame];
559
560 iso->offset = BYTES_PER_FRAME * frame;
561 iso->length = BYTES_PER_FRAME;
562 }
563
564 urbs[i]->dev = usb_dev;
565 urbs[i]->pipe = pipe;
566 urbs[i]->transfer_buffer_length = FRAMES_PER_URB
567 * BYTES_PER_FRAME;
568 urbs[i]->context = &dev->data_cb_info[i];
569 urbs[i]->interval = 1;
570 urbs[i]->transfer_flags = URB_ISO_ASAP;
571 urbs[i]->number_of_packets = FRAMES_PER_URB;
572 urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ?
573 read_completed : write_completed;
574 }
575
576 *ret = 0;
577 return urbs;
578}
579
580static void free_urbs(struct urb **urbs)
581{
582 int i;
583
584 if (!urbs)
585 return;
586
587 for (i = 0; i < N_URBS; i++) {
588 if (!urbs[i])
589 continue;
590
591 usb_kill_urb(urbs[i]);
592 kfree(urbs[i]->transfer_buffer);
593 usb_free_urb(urbs[i]);
594 }
595
596 kfree(urbs);
597}
598
599int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
600{
601 int i, ret;
602
603 dev->n_audio_in = max(dev->spec.num_analog_audio_in,
604 dev->spec.num_digital_audio_in) /
605 CHANNELS_PER_STREAM;
606 dev->n_audio_out = max(dev->spec.num_analog_audio_out,
607 dev->spec.num_digital_audio_out) /
608 CHANNELS_PER_STREAM;
609 dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
610
611 debug("dev->n_audio_in = %d\n", dev->n_audio_in);
612 debug("dev->n_audio_out = %d\n", dev->n_audio_out);
613 debug("dev->n_streams = %d\n", dev->n_streams);
614
615 if (dev->n_streams > MAX_STREAMS) {
616 log("unable to initialize device, too many streams.\n");
617 return -EINVAL;
618 }
619
620 ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
621 dev->n_audio_out, dev->n_audio_in, &dev->pcm);
622
623 if (ret < 0) {
624 log("snd_pcm_new() returned %d\n", ret);
625 return ret;
626 }
627
628 dev->pcm->private_data = dev;
629 strcpy(dev->pcm->name, dev->product_name);
630
631 memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
632 memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
633
634 memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
635 sizeof(snd_usb_caiaq_pcm_hardware));
636
637 /* setup samplerates */
638 dev->samplerates = dev->pcm_info.rates;
639 switch (dev->chip.usb_id) {
640 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
641 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
642 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO):
643 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE):
644 dev->samplerates |= SNDRV_PCM_RATE_192000;
645 /* fall thru */
646 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
647 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
648 dev->samplerates |= SNDRV_PCM_RATE_88200;
649 break;
650 }
651
652 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
653 &snd_usb_caiaq_ops);
654 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
655 &snd_usb_caiaq_ops);
656
657 snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
658 SNDRV_DMA_TYPE_CONTINUOUS,
659 snd_dma_continuous_data(GFP_KERNEL),
660 MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
661
662 dev->data_cb_info =
663 kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
664 GFP_KERNEL);
665
666 if (!dev->data_cb_info)
667 return -ENOMEM;
668
669 for (i = 0; i < N_URBS; i++) {
670 dev->data_cb_info[i].dev = dev;
671 dev->data_cb_info[i].index = i;
672 }
673
674 dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
675 if (ret < 0) {
676 kfree(dev->data_cb_info);
677 free_urbs(dev->data_urbs_in);
678 return ret;
679 }
680
681 dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
682 if (ret < 0) {
683 kfree(dev->data_cb_info);
684 free_urbs(dev->data_urbs_in);
685 free_urbs(dev->data_urbs_out);
686 return ret;
687 }
688
689 return 0;
690}
691
692void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev)
693{
694 debug("%s(%p)\n", __func__, dev);
695 stream_stop(dev);
696 free_urbs(dev->data_urbs_in);
697 free_urbs(dev->data_urbs_out);
698 kfree(dev->data_cb_info);
699}
700
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 01:12:11 -0500