2 * Copyright (c) 2006-2008 Daniel Mack, Karsten Wiese
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.
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.
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
19 #include <linux/spinlock.h>
20 #include <linux/slab.h>
21 #include <linux/init.h>
22 #include <linux/usb.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
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)
37 #define MAX_ENDPOINT_SIZE 512
39 #define ENDPOINT_CAPTURE 2
40 #define ENDPOINT_PLAYBACK 6
42 #define MAKE_CHECKBYTE(cdev,stream,i) \
43 (stream << 1) | (~(i / (cdev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
45 static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
46 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
47 SNDRV_PCM_INFO_BLOCK_TRANSFER),
48 .formats = SNDRV_PCM_FMTBIT_S24_3BE,
49 .rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
50 SNDRV_PCM_RATE_96000),
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,
56 .period_bytes_min = 128,
57 .period_bytes_max = MAX_BUFFER_SIZE,
63 activate_substream(struct snd_usb_caiaqdev *cdev,
64 struct snd_pcm_substream *sub)
66 spin_lock(&cdev->spinlock);
68 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
69 cdev->sub_playback[sub->number] = sub;
71 cdev->sub_capture[sub->number] = sub;
73 spin_unlock(&cdev->spinlock);
77 deactivate_substream(struct snd_usb_caiaqdev *cdev,
78 struct snd_pcm_substream *sub)
81 spin_lock_irqsave(&cdev->spinlock, flags);
83 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
84 cdev->sub_playback[sub->number] = NULL;
86 cdev->sub_capture[sub->number] = NULL;
88 spin_unlock_irqrestore(&cdev->spinlock, flags);
92 all_substreams_zero(struct snd_pcm_substream **subs)
95 for (i = 0; i < MAX_STREAMS; i++)
101 static int stream_start(struct snd_usb_caiaqdev *cdev)
105 debug("%s(%p)\n", __func__, cdev);
110 memset(cdev->sub_playback, 0, sizeof(cdev->sub_playback));
111 memset(cdev->sub_capture, 0, sizeof(cdev->sub_capture));
112 cdev->input_panic = 0;
113 cdev->output_panic = 0;
114 cdev->first_packet = 4;
118 for (i = 0; i < N_URBS; i++) {
119 ret = usb_submit_urb(cdev->data_urbs_in[i], GFP_ATOMIC);
121 log("unable to trigger read #%d! (ret %d)\n", i, ret);
130 static void stream_stop(struct snd_usb_caiaqdev *cdev)
134 debug("%s(%p)\n", __func__, cdev);
135 if (!cdev->streaming)
140 for (i = 0; i < N_URBS; i++) {
141 usb_kill_urb(cdev->data_urbs_in[i]);
143 if (test_bit(i, &cdev->outurb_active_mask))
144 usb_kill_urb(cdev->data_urbs_out[i]);
147 cdev->outurb_active_mask = 0;
150 static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
152 struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(substream);
153 debug("%s(%p)\n", __func__, substream);
154 substream->runtime->hw = cdev->pcm_info;
155 snd_pcm_limit_hw_rates(substream->runtime);
159 static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
161 struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(substream);
163 debug("%s(%p)\n", __func__, substream);
164 if (all_substreams_zero(cdev->sub_playback) &&
165 all_substreams_zero(cdev->sub_capture)) {
166 /* when the last client has stopped streaming,
167 * all sample rates are allowed again */
169 cdev->pcm_info.rates = cdev->samplerates;
175 static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
176 struct snd_pcm_hw_params *hw_params)
178 debug("%s(%p)\n", __func__, sub);
179 return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
182 static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
184 struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
185 debug("%s(%p)\n", __func__, sub);
186 deactivate_substream(cdev, sub);
187 return snd_pcm_lib_free_pages(sub);
190 /* this should probably go upstream */
191 #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12
192 #error "Change this table"
195 static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
196 48000, 64000, 88200, 96000, 176400, 192000 };
198 static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
200 int bytes_per_sample, bpp, ret, i;
201 int index = substream->number;
202 struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(substream);
203 struct snd_pcm_runtime *runtime = substream->runtime;
205 debug("%s(%p)\n", __func__, substream);
207 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
210 switch (cdev->spec.data_alignment) {
213 out_pos = BYTES_PER_SAMPLE + 1;
221 cdev->period_out_count[index] = out_pos;
222 cdev->audio_out_buf_pos[index] = out_pos;
226 switch (cdev->spec.data_alignment) {
228 in_pos = BYTES_PER_SAMPLE + 2;
231 in_pos = BYTES_PER_SAMPLE;
239 cdev->period_in_count[index] = in_pos;
240 cdev->audio_in_buf_pos[index] = in_pos;
246 /* the first client that opens a stream defines the sample rate
247 * setting for all subsequent calls, until the last client closed. */
248 for (i=0; i < ARRAY_SIZE(rates); i++)
249 if (runtime->rate == rates[i])
250 cdev->pcm_info.rates = 1 << i;
252 snd_pcm_limit_hw_rates(runtime);
254 bytes_per_sample = BYTES_PER_SAMPLE;
255 if (cdev->spec.data_alignment >= 2)
258 bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
259 * bytes_per_sample * CHANNELS_PER_STREAM * cdev->n_streams;
261 if (bpp > MAX_ENDPOINT_SIZE)
262 bpp = MAX_ENDPOINT_SIZE;
264 ret = snd_usb_caiaq_set_audio_params(cdev, runtime->rate,
265 runtime->sample_bits, bpp);
269 ret = stream_start(cdev);
273 cdev->output_running = 0;
274 wait_event_timeout(cdev->prepare_wait_queue, cdev->output_running, HZ);
275 if (!cdev->output_running) {
283 static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd)
285 struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
287 debug("%s(%p) cmd %d\n", __func__, sub, cmd);
290 case SNDRV_PCM_TRIGGER_START:
291 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
292 activate_substream(cdev, sub);
294 case SNDRV_PCM_TRIGGER_STOP:
295 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
296 deactivate_substream(cdev, sub);
305 static snd_pcm_uframes_t
306 snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
308 int index = sub->number;
309 struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
310 snd_pcm_uframes_t ptr;
312 spin_lock(&cdev->spinlock);
314 if (cdev->input_panic || cdev->output_panic) {
315 ptr = SNDRV_PCM_POS_XRUN;
319 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
320 ptr = bytes_to_frames(sub->runtime,
321 cdev->audio_out_buf_pos[index]);
323 ptr = bytes_to_frames(sub->runtime,
324 cdev->audio_in_buf_pos[index]);
327 spin_unlock(&cdev->spinlock);
331 /* operators for both playback and capture */
332 static struct snd_pcm_ops snd_usb_caiaq_ops = {
333 .open = snd_usb_caiaq_substream_open,
334 .close = snd_usb_caiaq_substream_close,
335 .ioctl = snd_pcm_lib_ioctl,
336 .hw_params = snd_usb_caiaq_pcm_hw_params,
337 .hw_free = snd_usb_caiaq_pcm_hw_free,
338 .prepare = snd_usb_caiaq_pcm_prepare,
339 .trigger = snd_usb_caiaq_pcm_trigger,
340 .pointer = snd_usb_caiaq_pcm_pointer
343 static void check_for_elapsed_periods(struct snd_usb_caiaqdev *cdev,
344 struct snd_pcm_substream **subs)
346 int stream, pb, *cnt;
347 struct snd_pcm_substream *sub;
349 for (stream = 0; stream < cdev->n_streams; stream++) {
354 pb = snd_pcm_lib_period_bytes(sub);
355 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
356 &cdev->period_out_count[stream] :
357 &cdev->period_in_count[stream];
360 snd_pcm_period_elapsed(sub);
366 static void read_in_urb_mode0(struct snd_usb_caiaqdev *cdev,
367 const struct urb *urb,
368 const struct usb_iso_packet_descriptor *iso)
370 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
371 struct snd_pcm_substream *sub;
374 if (all_substreams_zero(cdev->sub_capture))
377 for (i = 0; i < iso->actual_length;) {
378 for (stream = 0; stream < cdev->n_streams; stream++, i++) {
379 sub = cdev->sub_capture[stream];
381 struct snd_pcm_runtime *rt = sub->runtime;
382 char *audio_buf = rt->dma_area;
383 int sz = frames_to_bytes(rt, rt->buffer_size);
384 audio_buf[cdev->audio_in_buf_pos[stream]++]
386 cdev->period_in_count[stream]++;
387 if (cdev->audio_in_buf_pos[stream] == sz)
388 cdev->audio_in_buf_pos[stream] = 0;
394 static void read_in_urb_mode2(struct snd_usb_caiaqdev *cdev,
395 const struct urb *urb,
396 const struct usb_iso_packet_descriptor *iso)
398 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
399 unsigned char check_byte;
400 struct snd_pcm_substream *sub;
403 for (i = 0; i < iso->actual_length;) {
404 if (i % (cdev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
406 stream < cdev->n_streams;
408 if (cdev->first_packet)
411 check_byte = MAKE_CHECKBYTE(cdev, stream, i);
413 if ((usb_buf[i] & 0x3f) != check_byte)
414 cdev->input_panic = 1;
416 if (usb_buf[i] & 0x80)
417 cdev->output_panic = 1;
420 cdev->first_packet = 0;
422 for (stream = 0; stream < cdev->n_streams; stream++, i++) {
423 sub = cdev->sub_capture[stream];
424 if (cdev->input_panic)
428 struct snd_pcm_runtime *rt = sub->runtime;
429 char *audio_buf = rt->dma_area;
430 int sz = frames_to_bytes(rt, rt->buffer_size);
431 audio_buf[cdev->audio_in_buf_pos[stream]++] =
433 cdev->period_in_count[stream]++;
434 if (cdev->audio_in_buf_pos[stream] == sz)
435 cdev->audio_in_buf_pos[stream] = 0;
441 static void read_in_urb_mode3(struct snd_usb_caiaqdev *cdev,
442 const struct urb *urb,
443 const struct usb_iso_packet_descriptor *iso)
445 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
449 if (iso->actual_length % (BYTES_PER_SAMPLE_USB * CHANNELS_PER_STREAM))
452 for (i = 0; i < iso->actual_length;) {
453 for (stream = 0; stream < cdev->n_streams; stream++) {
454 struct snd_pcm_substream *sub = cdev->sub_capture[stream];
455 char *audio_buf = NULL;
458 if (sub && !cdev->input_panic) {
459 struct snd_pcm_runtime *rt = sub->runtime;
460 audio_buf = rt->dma_area;
461 sz = frames_to_bytes(rt, rt->buffer_size);
464 for (c = 0; c < CHANNELS_PER_STREAM; c++) {
465 /* 3 audio data bytes, followed by 1 check byte */
467 for (n = 0; n < BYTES_PER_SAMPLE; n++) {
468 audio_buf[cdev->audio_in_buf_pos[stream]++] = usb_buf[i+n];
470 if (cdev->audio_in_buf_pos[stream] == sz)
471 cdev->audio_in_buf_pos[stream] = 0;
474 cdev->period_in_count[stream] += BYTES_PER_SAMPLE;
477 i += BYTES_PER_SAMPLE;
479 if (usb_buf[i] != ((stream << 1) | c) &&
480 !cdev->first_packet) {
481 if (!cdev->input_panic)
482 printk(" EXPECTED: %02x got %02x, c %d, stream %d, i %d\n",
483 ((stream << 1) | c), usb_buf[i], c, stream, i);
484 cdev->input_panic = 1;
492 if (cdev->first_packet > 0)
493 cdev->first_packet--;
496 static void read_in_urb(struct snd_usb_caiaqdev *cdev,
497 const struct urb *urb,
498 const struct usb_iso_packet_descriptor *iso)
500 if (!cdev->streaming)
503 if (iso->actual_length < cdev->bpp)
506 switch (cdev->spec.data_alignment) {
508 read_in_urb_mode0(cdev, urb, iso);
511 read_in_urb_mode2(cdev, urb, iso);
514 read_in_urb_mode3(cdev, urb, iso);
518 if ((cdev->input_panic || cdev->output_panic) && !cdev->warned) {
519 debug("streaming error detected %s %s\n",
520 cdev->input_panic ? "(input)" : "",
521 cdev->output_panic ? "(output)" : "");
526 static void fill_out_urb_mode_0(struct snd_usb_caiaqdev *cdev,
528 const struct usb_iso_packet_descriptor *iso)
530 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
531 struct snd_pcm_substream *sub;
534 for (i = 0; i < iso->length;) {
535 for (stream = 0; stream < cdev->n_streams; stream++, i++) {
536 sub = cdev->sub_playback[stream];
538 struct snd_pcm_runtime *rt = sub->runtime;
539 char *audio_buf = rt->dma_area;
540 int sz = frames_to_bytes(rt, rt->buffer_size);
542 audio_buf[cdev->audio_out_buf_pos[stream]];
543 cdev->period_out_count[stream]++;
544 cdev->audio_out_buf_pos[stream]++;
545 if (cdev->audio_out_buf_pos[stream] == sz)
546 cdev->audio_out_buf_pos[stream] = 0;
551 /* fill in the check bytes */
552 if (cdev->spec.data_alignment == 2 &&
553 i % (cdev->n_streams * BYTES_PER_SAMPLE_USB) ==
554 (cdev->n_streams * CHANNELS_PER_STREAM))
555 for (stream = 0; stream < cdev->n_streams; stream++, i++)
556 usb_buf[i] = MAKE_CHECKBYTE(cdev, stream, i);
560 static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *cdev,
562 const struct usb_iso_packet_descriptor *iso)
564 unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
567 for (i = 0; i < iso->length;) {
568 for (stream = 0; stream < cdev->n_streams; stream++) {
569 struct snd_pcm_substream *sub = cdev->sub_playback[stream];
570 char *audio_buf = NULL;
574 struct snd_pcm_runtime *rt = sub->runtime;
575 audio_buf = rt->dma_area;
576 sz = frames_to_bytes(rt, rt->buffer_size);
579 for (c = 0; c < CHANNELS_PER_STREAM; c++) {
580 for (n = 0; n < BYTES_PER_SAMPLE; n++) {
582 usb_buf[i+n] = audio_buf[cdev->audio_out_buf_pos[stream]++];
584 if (cdev->audio_out_buf_pos[stream] == sz)
585 cdev->audio_out_buf_pos[stream] = 0;
592 cdev->period_out_count[stream] += BYTES_PER_SAMPLE;
594 i += BYTES_PER_SAMPLE;
596 /* fill in the check byte pattern */
597 usb_buf[i++] = (stream << 1) | c;
603 static inline void fill_out_urb(struct snd_usb_caiaqdev *cdev,
605 const struct usb_iso_packet_descriptor *iso)
607 switch (cdev->spec.data_alignment) {
610 fill_out_urb_mode_0(cdev, urb, iso);
613 fill_out_urb_mode_3(cdev, urb, iso);
618 static void read_completed(struct urb *urb)
620 struct snd_usb_caiaq_cb_info *info = urb->context;
621 struct snd_usb_caiaqdev *cdev;
622 struct urb *out = NULL;
623 int i, frame, len, send_it = 0, outframe = 0;
626 if (urb->status || !info)
631 if (!cdev->streaming)
634 /* find an unused output urb that is unused */
635 for (i = 0; i < N_URBS; i++)
636 if (test_and_set_bit(i, &cdev->outurb_active_mask) == 0) {
637 out = cdev->data_urbs_out[i];
642 log("Unable to find an output urb to use\n");
646 /* read the recently received packet and send back one which has
648 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
649 if (urb->iso_frame_desc[frame].status)
652 len = urb->iso_frame_desc[outframe].actual_length;
653 out->iso_frame_desc[outframe].length = len;
654 out->iso_frame_desc[outframe].actual_length = 0;
655 out->iso_frame_desc[outframe].offset = offset;
659 spin_lock(&cdev->spinlock);
660 fill_out_urb(cdev, out, &out->iso_frame_desc[outframe]);
661 read_in_urb(cdev, urb, &urb->iso_frame_desc[frame]);
662 spin_unlock(&cdev->spinlock);
663 check_for_elapsed_periods(cdev, cdev->sub_playback);
664 check_for_elapsed_periods(cdev, cdev->sub_capture);
672 out->number_of_packets = outframe;
673 out->transfer_flags = URB_ISO_ASAP;
674 usb_submit_urb(out, GFP_ATOMIC);
676 struct snd_usb_caiaq_cb_info *oinfo = out->context;
677 clear_bit(oinfo->index, &cdev->outurb_active_mask);
681 /* re-submit inbound urb */
682 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
683 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
684 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
685 urb->iso_frame_desc[frame].actual_length = 0;
688 urb->number_of_packets = FRAMES_PER_URB;
689 urb->transfer_flags = URB_ISO_ASAP;
690 usb_submit_urb(urb, GFP_ATOMIC);
693 static void write_completed(struct urb *urb)
695 struct snd_usb_caiaq_cb_info *info = urb->context;
696 struct snd_usb_caiaqdev *cdev = info->cdev;
698 if (!cdev->output_running) {
699 cdev->output_running = 1;
700 wake_up(&cdev->prepare_wait_queue);
703 clear_bit(info->index, &cdev->outurb_active_mask);
706 static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret)
710 struct usb_device *usb_dev = cdev->chip.dev;
713 pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
714 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) :
715 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE);
717 urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL);
719 log("unable to kmalloc() urbs, OOM!?\n");
724 for (i = 0; i < N_URBS; i++) {
725 urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL);
727 log("unable to usb_alloc_urb(), OOM!?\n");
732 urbs[i]->transfer_buffer =
733 kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL);
734 if (!urbs[i]->transfer_buffer) {
735 log("unable to kmalloc() transfer buffer, OOM!?\n");
740 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
741 struct usb_iso_packet_descriptor *iso =
742 &urbs[i]->iso_frame_desc[frame];
744 iso->offset = BYTES_PER_FRAME * frame;
745 iso->length = BYTES_PER_FRAME;
748 urbs[i]->dev = usb_dev;
749 urbs[i]->pipe = pipe;
750 urbs[i]->transfer_buffer_length = FRAMES_PER_URB
752 urbs[i]->context = &cdev->data_cb_info[i];
753 urbs[i]->interval = 1;
754 urbs[i]->transfer_flags = URB_ISO_ASAP;
755 urbs[i]->number_of_packets = FRAMES_PER_URB;
756 urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ?
757 read_completed : write_completed;
764 static void free_urbs(struct urb **urbs)
771 for (i = 0; i < N_URBS; i++) {
775 usb_kill_urb(urbs[i]);
776 kfree(urbs[i]->transfer_buffer);
777 usb_free_urb(urbs[i]);
783 int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev)
787 cdev->n_audio_in = max(cdev->spec.num_analog_audio_in,
788 cdev->spec.num_digital_audio_in) /
790 cdev->n_audio_out = max(cdev->spec.num_analog_audio_out,
791 cdev->spec.num_digital_audio_out) /
793 cdev->n_streams = max(cdev->n_audio_in, cdev->n_audio_out);
795 debug("cdev->n_audio_in = %d\n", cdev->n_audio_in);
796 debug("cdev->n_audio_out = %d\n", cdev->n_audio_out);
797 debug("cdev->n_streams = %d\n", cdev->n_streams);
799 if (cdev->n_streams > MAX_STREAMS) {
800 log("unable to initialize device, too many streams.\n");
804 ret = snd_pcm_new(cdev->chip.card, cdev->product_name, 0,
805 cdev->n_audio_out, cdev->n_audio_in, &cdev->pcm);
808 log("snd_pcm_new() returned %d\n", ret);
812 cdev->pcm->private_data = cdev;
813 strlcpy(cdev->pcm->name, cdev->product_name, sizeof(cdev->pcm->name));
815 memset(cdev->sub_playback, 0, sizeof(cdev->sub_playback));
816 memset(cdev->sub_capture, 0, sizeof(cdev->sub_capture));
818 memcpy(&cdev->pcm_info, &snd_usb_caiaq_pcm_hardware,
819 sizeof(snd_usb_caiaq_pcm_hardware));
821 /* setup samplerates */
822 cdev->samplerates = cdev->pcm_info.rates;
823 switch (cdev->chip.usb_id) {
824 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
825 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
826 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO):
827 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE):
828 cdev->samplerates |= SNDRV_PCM_RATE_192000;
830 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO2DJ):
831 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
832 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
833 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORAUDIO2):
834 cdev->samplerates |= SNDRV_PCM_RATE_88200;
838 snd_pcm_set_ops(cdev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
840 snd_pcm_set_ops(cdev->pcm, SNDRV_PCM_STREAM_CAPTURE,
843 snd_pcm_lib_preallocate_pages_for_all(cdev->pcm,
844 SNDRV_DMA_TYPE_CONTINUOUS,
845 snd_dma_continuous_data(GFP_KERNEL),
846 MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
849 kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
852 if (!cdev->data_cb_info)
855 cdev->outurb_active_mask = 0;
856 BUILD_BUG_ON(N_URBS > (sizeof(cdev->outurb_active_mask) * 8));
858 for (i = 0; i < N_URBS; i++) {
859 cdev->data_cb_info[i].cdev = cdev;
860 cdev->data_cb_info[i].index = i;
863 cdev->data_urbs_in = alloc_urbs(cdev, SNDRV_PCM_STREAM_CAPTURE, &ret);
865 kfree(cdev->data_cb_info);
866 free_urbs(cdev->data_urbs_in);
870 cdev->data_urbs_out = alloc_urbs(cdev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
872 kfree(cdev->data_cb_info);
873 free_urbs(cdev->data_urbs_in);
874 free_urbs(cdev->data_urbs_out);
881 void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *cdev)
883 debug("%s(%p)\n", __func__, cdev);
885 free_urbs(cdev->data_urbs_in);
886 free_urbs(cdev->data_urbs_out);
887 kfree(cdev->data_cb_info);