projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-2.6-block.git] / sound / usb / caiaq / audio.c
CommitLineData
523f1dce 1/*
8d048841 2 * Copyright (c) 2006-2008 Daniel Mack, Karsten Wiese
523f1dce
DM		 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
e431cf45 19#include <linux/spinlock.h>
5a0e3ad6 20#include <linux/slab.h>
523f1dce 21#include <linux/init.h>
523f1dce 22#include <linux/usb.h>
523f1dce 23#include <sound/core.h>
523f1dce 24#include <sound/pcm.h>
523f1dce 25
936e7d03
DM		 26#include "device.h"
27#include "audio.h"
523f1dce
DM		 28
29#define N_URBS 32
30#define CLOCK_DRIFT_TOLERANCE 5
31#define FRAMES_PER_URB 8
32#define BYTES_PER_FRAME 512
33#define CHANNELS_PER_STREAM 2
34#define BYTES_PER_SAMPLE 3
35#define BYTES_PER_SAMPLE_USB 4
36#define MAX_BUFFER_SIZE (128*1024)
6e9fc6bd
DM		 37#define MAX_ENDPOINT_SIZE 512
38
523f1dce
DM		 39#define ENDPOINT_CAPTURE 2
40#define ENDPOINT_PLAYBACK 6
41
42#define MAKE_CHECKBYTE(dev,stream,i) \
43 (stream << 1) | (~(i / (dev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
44
45static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
9318dce5 46 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
523f1dce
DM		 47 SNDRV_PCM_INFO_BLOCK_TRANSFER),
48 .formats = SNDRV_PCM_FMTBIT_S24_3BE,
9318dce5 49 .rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
523f1dce
DM		 50 SNDRV_PCM_RATE_96000),
51 .rate_min = 44100,
52 .rate_max = 0, /* will overwrite later */
53 .channels_min = CHANNELS_PER_STREAM,
54 .channels_max = CHANNELS_PER_STREAM,
55 .buffer_bytes_max = MAX_BUFFER_SIZE,
09189ac7 56 .period_bytes_min = 128,
523f1dce
DM		 57 .period_bytes_max = MAX_BUFFER_SIZE,
58 .periods_min = 1,
59 .periods_max = 1024,
60};
61
62static void
63activate_substream(struct snd_usb_caiaqdev *dev,
64 struct snd_pcm_substream *sub)
65{
ac9dd9d3
MH		 66 spin_lock(&dev->spinlock);
67
523f1dce
DM		 68 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
69 dev->sub_playback[sub->number] = sub;
70 else
71 dev->sub_capture[sub->number] = sub;
ac9dd9d3
MH		 72
73 spin_unlock(&dev->spinlock);
523f1dce
DM		 74}
75
9318dce5 76static void
523f1dce
DM		 77deactivate_substream(struct snd_usb_caiaqdev *dev,
78 struct snd_pcm_substream *sub)
79{
8d048841
DM		 80 unsigned long flags;
81 spin_lock_irqsave(&dev->spinlock, flags);
82
523f1dce
DM		 83 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
84 dev->sub_playback[sub->number] = NULL;
85 else
86 dev->sub_capture[sub->number] = NULL;
8d048841
DM		 87
88 spin_unlock_irqrestore(&dev->spinlock, flags);
523f1dce
DM		 89}
90
91static int
92all_substreams_zero(struct snd_pcm_substream **subs)
93{
94 int i;
95 for (i = 0; i < MAX_STREAMS; i++)
96 if (subs[i] != NULL)
97 return 0;
98 return 1;
99}
100
101static int stream_start(struct snd_usb_caiaqdev *dev)
102{
103 int i, ret;
104
8d048841
DM		 105 debug("%s(%p)\n", __func__, dev);
106
107 if (dev->streaming)
523f1dce 108 return -EINVAL;
523f1dce 109
8d048841
DM		 110 memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
111 memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
523f1dce
DM		 112 dev->input_panic = 0;
113 dev->output_panic = 0;
114 dev->first_packet = 1;
115 dev->streaming = 1;
1313e704 116 dev->warned = 0;
523f1dce
DM		 117
118 for (i = 0; i < N_URBS; i++) {
119 ret = usb_submit_urb(dev->data_urbs_in[i], GFP_ATOMIC);
120 if (ret) {
8d048841 121 log("unable to trigger read #%d! (ret %d)\n", i, ret);
523f1dce 122 dev->streaming = 0;
523f1dce
DM		 123 return -EPIPE;
124 }
125 }
9318dce5 126
523f1dce
DM		 127 return 0;
128}
129
130static void stream_stop(struct snd_usb_caiaqdev *dev)
131{
132 int i;
8d048841
DM		 133
134 debug("%s(%p)\n", __func__, dev);
523f1dce
DM		 135 if (!dev->streaming)
136 return;
9318dce5 137
523f1dce 138 dev->streaming = 0;
8d048841 139
523f1dce 140 for (i = 0; i < N_URBS; i++) {
8d048841
DM		 141 usb_kill_urb(dev->data_urbs_in[i]);
142 usb_kill_urb(dev->data_urbs_out[i]);
523f1dce
DM		 143 }
144}
145
146static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
147{
148 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
8d048841 149 debug("%s(%p)\n", __func__, substream);
523f1dce
DM		 150 substream->runtime->hw = dev->pcm_info;
151 snd_pcm_limit_hw_rates(substream->runtime);
152 return 0;
153}
154
155static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
156{
157 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
158
8d048841 159 debug("%s(%p)\n", __func__, substream);
523f1dce
DM		 160 if (all_substreams_zero(dev->sub_playback) &&
161 all_substreams_zero(dev->sub_capture)) {
9318dce5 162 /* when the last client has stopped streaming,
523f1dce
DM		 163 * all sample rates are allowed again */
164 stream_stop(dev);
165 dev->pcm_info.rates = dev->samplerates;
166 }
8d048841 167
523f1dce
DM		 168 return 0;
169}
170
171static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
172 struct snd_pcm_hw_params *hw_params)
173{
8d048841 174 debug("%s(%p)\n", __func__, sub);
523f1dce
DM		 175 return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
176}
177
178static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
179{
180 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
8d048841 181 debug("%s(%p)\n", __func__, sub);
523f1dce 182 deactivate_substream(dev, sub);
523f1dce
DM		 183 return snd_pcm_lib_free_pages(sub);
184}
185
186/* this should probably go upstream */
187#if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12
188#error "Change this table"
189#endif
190
191static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
192 48000, 64000, 88200, 96000, 176400, 192000 };
193
194static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
195{
196 int bytes_per_sample, bpp, ret, i;
197 int index = substream->number;
198 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
199 struct snd_pcm_runtime *runtime = substream->runtime;
200
8d048841 201 debug("%s(%p)\n", __func__, substream);
9318dce5 202
a9b487fa
DM		 203 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
204 dev->period_out_count[index] = BYTES_PER_SAMPLE + 1;
523f1dce 205 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
a9b487fa 206 } else {
0a842c8b
DM		 207 int in_pos = (dev->spec.data_alignment == 2) ? 0 : 2;
208 dev->period_in_count[index] = BYTES_PER_SAMPLE + in_pos;
209 dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE + in_pos;
a9b487fa
DM		 210 }
211
523f1dce
DM		 212 if (dev->streaming)
213 return 0;
9318dce5 214
523f1dce
DM		 215 /* the first client that opens a stream defines the sample rate
216 * setting for all subsequent calls, until the last client closed. */
217 for (i=0; i < ARRAY_SIZE(rates); i++)
218 if (runtime->rate == rates[i])
219 dev->pcm_info.rates = 1 << i;
9318dce5 220
523f1dce
DM		 221 snd_pcm_limit_hw_rates(runtime);
222
223 bytes_per_sample = BYTES_PER_SAMPLE;
224 if (dev->spec.data_alignment == 2)
225 bytes_per_sample++;
9318dce5 226
523f1dce
DM		 227 bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
228 * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
6e9fc6bd
DM		 229
230 if (bpp > MAX_ENDPOINT_SIZE)
231 bpp = MAX_ENDPOINT_SIZE;
232
523f1dce
DM		 233 ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate,
234 runtime->sample_bits, bpp);
235 if (ret)
236 return ret;
237
238 ret = stream_start(dev);
239 if (ret)
240 return ret;
9318dce5 241
523f1dce
DM		 242 dev->output_running = 0;
243 wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ);
244 if (!dev->output_running) {
245 stream_stop(dev);
246 return -EPIPE;
247 }
248
249 return 0;
250}
251
252static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd)
253{
254 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
255
256 switch (cmd) {
257 case SNDRV_PCM_TRIGGER_START:
258 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
523f1dce 259 activate_substream(dev, sub);
523f1dce
DM		 260 break;
261 case SNDRV_PCM_TRIGGER_STOP:
262 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
523f1dce 263 deactivate_substream(dev, sub);
523f1dce
DM		 264 break;
265 default:
266 return -EINVAL;
267 }
268
269 return 0;
270}
271
272static snd_pcm_uframes_t
273snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
274{
275 int index = sub->number;
276 struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
3702b082
MH		 277 snd_pcm_uframes_t ptr;
278
279 spin_lock(&dev->spinlock);
523f1dce
DM		 280
281 if (dev->input_panic || dev->output_panic)
3702b082 282 ptr = SNDRV_PCM_POS_XRUN;
523f1dce
DM		 283
284 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
3702b082 285 ptr = bytes_to_frames(sub->runtime,
523f1dce
DM		 286 dev->audio_out_buf_pos[index]);
287 else
3702b082 288 ptr = bytes_to_frames(sub->runtime,
523f1dce 289 dev->audio_in_buf_pos[index]);
3702b082
MH		 290
291 spin_unlock(&dev->spinlock);
292 return ptr;
523f1dce
DM		 293}
294
295/* operators for both playback and capture */
296static struct snd_pcm_ops snd_usb_caiaq_ops = {
297 .open = snd_usb_caiaq_substream_open,
298 .close = snd_usb_caiaq_substream_close,
299 .ioctl = snd_pcm_lib_ioctl,
300 .hw_params = snd_usb_caiaq_pcm_hw_params,
301 .hw_free = snd_usb_caiaq_pcm_hw_free,
302 .prepare = snd_usb_caiaq_pcm_prepare,
303 .trigger = snd_usb_caiaq_pcm_trigger,
304 .pointer = snd_usb_caiaq_pcm_pointer
305};
9318dce5 306
523f1dce
DM		 307static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
308 struct snd_pcm_substream **subs)
309{
310 int stream, pb, *cnt;
311 struct snd_pcm_substream *sub;
312
313 for (stream = 0; stream < dev->n_streams; stream++) {
314 sub = subs[stream];
315 if (!sub)
316 continue;
317
a9b487fa 318 pb = snd_pcm_lib_period_bytes(sub);
523f1dce
DM		 319 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
320 &dev->period_out_count[stream] :
321 &dev->period_in_count[stream];
322
323 if (*cnt >= pb) {
324 snd_pcm_period_elapsed(sub);
325 *cnt %= pb;
326 }
327 }
328}
329
330static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
331 const struct urb *urb,
332 const struct usb_iso_packet_descriptor *iso)
333{
334 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
335 struct snd_pcm_substream *sub;
336 int stream, i;
337
338 if (all_substreams_zero(dev->sub_capture))
339 return;
340
523f1dce
DM		 341 for (i = 0; i < iso->actual_length;) {
342 for (stream = 0; stream < dev->n_streams; stream++, i++) {
343 sub = dev->sub_capture[stream];
344 if (sub) {
345 struct snd_pcm_runtime *rt = sub->runtime;
346 char *audio_buf = rt->dma_area;
347 int sz = frames_to_bytes(rt, rt->buffer_size);
9318dce5 348 audio_buf[dev->audio_in_buf_pos[stream]++]
523f1dce
DM		 349 = usb_buf[i];
350 dev->period_in_count[stream]++;
351 if (dev->audio_in_buf_pos[stream] == sz)
352 dev->audio_in_buf_pos[stream] = 0;
353 }
354 }
355 }
523f1dce
DM		 356}
357
358static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
359 const struct urb *urb,
360 const struct usb_iso_packet_descriptor *iso)
361{
362 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
363 unsigned char check_byte;
364 struct snd_pcm_substream *sub;
365 int stream, i;
366
523f1dce
DM		 367 for (i = 0; i < iso->actual_length;) {
368 if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
9318dce5
DM		 369 for (stream = 0;
370 stream < dev->n_streams;
523f1dce
DM		 371 stream++, i++) {
372 if (dev->first_packet)
373 continue;
374
375 check_byte = MAKE_CHECKBYTE(dev, stream, i);
9318dce5 376
523f1dce
DM		 377 if ((usb_buf[i] & 0x3f) != check_byte)
378 dev->input_panic = 1;
379
380 if (usb_buf[i] & 0x80)
381 dev->output_panic = 1;
382 }
383 }
384 dev->first_packet = 0;
385
386 for (stream = 0; stream < dev->n_streams; stream++, i++) {
387 sub = dev->sub_capture[stream];
9311c9b4
DM		 388 if (dev->input_panic)
389 usb_buf[i] = 0;
390
523f1dce
DM		 391 if (sub) {
392 struct snd_pcm_runtime *rt = sub->runtime;
393 char *audio_buf = rt->dma_area;
394 int sz = frames_to_bytes(rt, rt->buffer_size);
a971c3d4
KW		 395 audio_buf[dev->audio_in_buf_pos[stream]++] =
396 usb_buf[i];
523f1dce
DM		 397 dev->period_in_count[stream]++;
398 if (dev->audio_in_buf_pos[stream] == sz)
399 dev->audio_in_buf_pos[stream] = 0;
400 }
401 }
402 }
523f1dce
DM		 403}
404
405static void read_in_urb(struct snd_usb_caiaqdev *dev,
406 const struct urb *urb,
407 const struct usb_iso_packet_descriptor *iso)
408{
409 if (!dev->streaming)
410 return;
411
9311c9b4
DM		 412 if (iso->actual_length < dev->bpp)
413 return;
414
523f1dce
DM		 415 switch (dev->spec.data_alignment) {
416 case 0:
417 read_in_urb_mode0(dev, urb, iso);
418 break;
419 case 2:
420 read_in_urb_mode2(dev, urb, iso);
421 break;
422 }
423
1313e704 424 if ((dev->input_panic || dev->output_panic) && !dev->warned) {
9318dce5 425 debug("streaming error detected %s %s\n",
523f1dce
DM		 426 dev->input_panic ? "(input)" : "",
427 dev->output_panic ? "(output)" : "");
1313e704 428 dev->warned = 1;
523f1dce 429 }
523f1dce
DM		 430}
431
9318dce5
DM		 432static void fill_out_urb(struct snd_usb_caiaqdev *dev,
433 struct urb *urb,
523f1dce
DM		 434 const struct usb_iso_packet_descriptor *iso)
435{
436 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
437 struct snd_pcm_substream *sub;
438 int stream, i;
9318dce5 439
523f1dce 440 for (i = 0; i < iso->length;) {
a971c3d4 441 for (stream = 0; stream < dev->n_streams; stream++, i++) {
523f1dce
DM		 442 sub = dev->sub_playback[stream];
443 if (sub) {
444 struct snd_pcm_runtime *rt = sub->runtime;
445 char *audio_buf = rt->dma_area;
446 int sz = frames_to_bytes(rt, rt->buffer_size);
a971c3d4
KW		 447 usb_buf[i] =
448 audio_buf[dev->audio_out_buf_pos[stream]];
449 dev->period_out_count[stream]++;
523f1dce
DM		 450 dev->audio_out_buf_pos[stream]++;
451 if (dev->audio_out_buf_pos[stream] == sz)
452 dev->audio_out_buf_pos[stream] = 0;
453 } else
a971c3d4
KW		 454 usb_buf[i] = 0;
455 }
523f1dce
DM		 456
457 /* fill in the check bytes */
458 if (dev->spec.data_alignment == 2 &&
9318dce5 459 i % (dev->n_streams * BYTES_PER_SAMPLE_USB) ==
523f1dce
DM		 460 (dev->n_streams * CHANNELS_PER_STREAM))
461 for (stream = 0; stream < dev->n_streams; stream++, i++)
462 usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i);
523f1dce 463 }
523f1dce
DM		 464}
465
466static void read_completed(struct urb *urb)
467{
9318dce5 468 struct snd_usb_caiaq_cb_info *info = urb->context;
523f1dce
DM		 469 struct snd_usb_caiaqdev *dev;
470 struct urb *out;
471 int frame, len, send_it = 0, outframe = 0;
472
473 if (urb->status || !info)
474 return;
475
476 dev = info->dev;
8d048841 477
523f1dce
DM		 478 if (!dev->streaming)
479 return;
480
481 out = dev->data_urbs_out[info->index];
482
483 /* read the recently received packet and send back one which has
484 * the same layout */
485 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
486 if (urb->iso_frame_desc[frame].status)
487 continue;
488
489 len = urb->iso_frame_desc[outframe].actual_length;
490 out->iso_frame_desc[outframe].length = len;
491 out->iso_frame_desc[outframe].actual_length = 0;
492 out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;
9318dce5 493
523f1dce 494 if (len > 0) {
8d048841 495 spin_lock(&dev->spinlock);
523f1dce
DM		 496 fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
497 read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
8d048841
DM		 498 spin_unlock(&dev->spinlock);
499 check_for_elapsed_periods(dev, dev->sub_playback);
500 check_for_elapsed_periods(dev, dev->sub_capture);
523f1dce
DM		 501 send_it = 1;
502 }
503
504 outframe++;
505 }
506
507 if (send_it) {
508 out->number_of_packets = FRAMES_PER_URB;
509 out->transfer_flags = URB_ISO_ASAP;
510 usb_submit_urb(out, GFP_ATOMIC);
511 }
9318dce5 512
523f1dce
DM		 513 /* re-submit inbound urb */
514 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
515 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
516 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
517 urb->iso_frame_desc[frame].actual_length = 0;
518 }
9318dce5 519
523f1dce
DM		 520 urb->number_of_packets = FRAMES_PER_URB;
521 urb->transfer_flags = URB_ISO_ASAP;
522 usb_submit_urb(urb, GFP_ATOMIC);
523}
524
525static void write_completed(struct urb *urb)
526{
527 struct snd_usb_caiaq_cb_info *info = urb->context;
528 struct snd_usb_caiaqdev *dev = info->dev;
529
530 if (!dev->output_running) {
531 dev->output_running = 1;
532 wake_up(&dev->prepare_wait_queue);
533 }
534}
535
536static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
537{
538 int i, frame;
539 struct urb **urbs;
540 struct usb_device *usb_dev = dev->chip.dev;
541 unsigned int pipe;
542
9318dce5 543 pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
523f1dce
DM		 544 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) :
545 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE);
546
547 urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL);
548 if (!urbs) {
549 log("unable to kmalloc() urbs, OOM!?\n");
550 *ret = -ENOMEM;
551 return NULL;
552 }
553
554 for (i = 0; i < N_URBS; i++) {
555 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL);
556 if (!urbs[i]) {
557 log("unable to usb_alloc_urb(), OOM!?\n");
558 *ret = -ENOMEM;
559 return urbs;
560 }
561
9318dce5 562 urbs[i]->transfer_buffer =
523f1dce
DM		 563 kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL);
564 if (!urbs[i]->transfer_buffer) {
565 log("unable to kmalloc() transfer buffer, OOM!?\n");
566 *ret = -ENOMEM;
567 return urbs;
568 }
9318dce5 569
523f1dce 570 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
9318dce5 571 struct usb_iso_packet_descriptor *iso =
523f1dce 572 &urbs[i]->iso_frame_desc[frame];
9318dce5 573
523f1dce
DM		 574 iso->offset = BYTES_PER_FRAME * frame;
575 iso->length = BYTES_PER_FRAME;
576 }
9318dce5 577
523f1dce
DM		 578 urbs[i]->dev = usb_dev;
579 urbs[i]->pipe = pipe;
9318dce5 580 urbs[i]->transfer_buffer_length = FRAMES_PER_URB
523f1dce
DM		 581 * BYTES_PER_FRAME;
582 urbs[i]->context = &dev->data_cb_info[i];
583 urbs[i]->interval = 1;
584 urbs[i]->transfer_flags = URB_ISO_ASAP;
585 urbs[i]->number_of_packets = FRAMES_PER_URB;
586 urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ?
587 read_completed : write_completed;
588 }
589
590 *ret = 0;
591 return urbs;
592}
593
594static void free_urbs(struct urb **urbs)
595{
596 int i;
597
598 if (!urbs)
599 return;
600
601 for (i = 0; i < N_URBS; i++) {
602 if (!urbs[i])
603 continue;
9318dce5 604
523f1dce
DM		 605 usb_kill_urb(urbs[i]);
606 kfree(urbs[i]->transfer_buffer);
607 usb_free_urb(urbs[i]);
608 }
609
610 kfree(urbs);
611}
612
599c3e76 613int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
523f1dce
DM		 614{
615 int i, ret;
616
9318dce5
DM		 617 dev->n_audio_in = max(dev->spec.num_analog_audio_in,
618 dev->spec.num_digital_audio_in) /
523f1dce
DM		 619 CHANNELS_PER_STREAM;
620 dev->n_audio_out = max(dev->spec.num_analog_audio_out,
9318dce5 621 dev->spec.num_digital_audio_out) /
523f1dce
DM		 622 CHANNELS_PER_STREAM;
623 dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
624
625 debug("dev->n_audio_in = %d\n", dev->n_audio_in);
626 debug("dev->n_audio_out = %d\n", dev->n_audio_out);
627 debug("dev->n_streams = %d\n", dev->n_streams);
628
629 if (dev->n_streams > MAX_STREAMS) {
630 log("unable to initialize device, too many streams.\n");
631 return -EINVAL;
632 }
633
9318dce5 634 ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
523f1dce
DM		 635 dev->n_audio_out, dev->n_audio_in, &dev->pcm);
636
637 if (ret < 0) {
638 log("snd_pcm_new() returned %d\n", ret);
639 return ret;
640 }
641
642 dev->pcm->private_data = dev;
643 strcpy(dev->pcm->name, dev->product_name);
644
645 memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
646 memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
9318dce5 647
523f1dce
DM		 648 memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
649 sizeof(snd_usb_caiaq_pcm_hardware));
650
651 /* setup samplerates */
652 dev->samplerates = dev->pcm_info.rates;
653 switch (dev->chip.usb_id) {
654 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
ad1e34b5 655 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
f3e9d5d1 656 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO):
2165592b 657 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE):
523f1dce 658 dev->samplerates |= SNDRV_PCM_RATE_192000;
2165592b 659 /* fall thru */
b30c4947 660 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO2DJ):
2165592b 661 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
523f1dce
DM		 662 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
663 dev->samplerates |= SNDRV_PCM_RATE_88200;
664 break;
665 }
666
9318dce5 667 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
523f1dce 668 &snd_usb_caiaq_ops);
9318dce5 669 snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
523f1dce
DM		 670 &snd_usb_caiaq_ops);
671
672 snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
673 SNDRV_DMA_TYPE_CONTINUOUS,
674 snd_dma_continuous_data(GFP_KERNEL),
675 MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
676
677 dev->data_cb_info =
9318dce5 678 kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
523f1dce
DM		 679 GFP_KERNEL);
680
681 if (!dev->data_cb_info)
682 return -ENOMEM;
683
684 for (i = 0; i < N_URBS; i++) {
685 dev->data_cb_info[i].dev = dev;
686 dev->data_cb_info[i].index = i;
687 }
9318dce5 688
523f1dce
DM		 689 dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
690 if (ret < 0) {
691 kfree(dev->data_cb_info);
692 free_urbs(dev->data_urbs_in);
693 return ret;
694 }
9318dce5 695
523f1dce
DM		 696 dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
697 if (ret < 0) {
698 kfree(dev->data_cb_info);
699 free_urbs(dev->data_urbs_in);
700 free_urbs(dev->data_urbs_out);
701 return ret;
702 }
703
704 return 0;
705}
706
707void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev)
708{
8d048841 709 debug("%s(%p)\n", __func__, dev);
523f1dce
DM		 710 stream_stop(dev);
711 free_urbs(dev->data_urbs_in);
712 free_urbs(dev->data_urbs_out);
713 kfree(dev->data_cb_info);
714}
715
Linux 6.x block layer and io_uring tree(s)