2 * soc-compress.c -- ALSA SoC Compress
4 * Copyright (C) 2012 Intel Corp.
6 * Authors: Namarta Kohli <namartax.kohli@intel.com>
7 * Ramesh Babu K V <ramesh.babu@linux.intel.com>
8 * Vinod Koul <vinod.koul@linux.intel.com>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/delay.h>
20 #include <linux/slab.h>
21 #include <linux/workqueue.h>
22 #include <sound/core.h>
23 #include <sound/compress_params.h>
24 #include <sound/compress_driver.h>
25 #include <sound/soc.h>
26 #include <sound/initval.h>
27 #include <sound/soc-dpcm.h>
29 static int soc_compr_open(struct snd_compr_stream *cstream)
31 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
32 struct snd_soc_platform *platform = rtd->platform;
35 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
37 if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
38 ret = platform->driver->compr_ops->open(cstream);
40 pr_err("compress asoc: can't open platform %s\n",
41 platform->component.name);
46 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
47 ret = rtd->dai_link->compr_ops->startup(cstream);
49 pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name);
54 snd_soc_runtime_activate(rtd, cstream->direction);
56 mutex_unlock(&rtd->pcm_mutex);
61 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
62 platform->driver->compr_ops->free(cstream);
64 mutex_unlock(&rtd->pcm_mutex);
68 static int soc_compr_open_fe(struct snd_compr_stream *cstream)
70 struct snd_soc_pcm_runtime *fe = cstream->private_data;
71 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
72 struct snd_soc_platform *platform = fe->platform;
73 struct snd_soc_dpcm *dpcm;
74 struct snd_soc_dapm_widget_list *list;
78 if (cstream->direction == SND_COMPRESS_PLAYBACK)
79 stream = SNDRV_PCM_STREAM_PLAYBACK;
81 stream = SNDRV_PCM_STREAM_CAPTURE;
83 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
85 if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
86 ret = platform->driver->compr_ops->open(cstream);
88 pr_err("compress asoc: can't open platform %s\n",
89 platform->component.name);
94 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
95 ret = fe->dai_link->compr_ops->startup(cstream);
97 pr_err("compress asoc: %s startup failed\n", fe->dai_link->name);
102 fe->dpcm[stream].runtime = fe_substream->runtime;
104 ret = dpcm_path_get(fe, stream, &list);
108 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
109 fe->dai_link->name, stream ? "capture" : "playback");
111 /* calculate valid and active FE <-> BE dpcms */
112 dpcm_process_paths(fe, stream, &list, 1);
114 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
116 ret = dpcm_be_dai_startup(fe, stream);
118 /* clean up all links */
119 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
120 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
122 dpcm_be_disconnect(fe, stream);
123 fe->dpcm[stream].runtime = NULL;
127 dpcm_clear_pending_state(fe, stream);
128 dpcm_path_put(&list);
130 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
131 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
133 snd_soc_runtime_activate(fe, stream);
135 mutex_unlock(&fe->card->mutex);
140 dpcm_path_put(&list);
142 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
143 fe->dai_link->compr_ops->shutdown(cstream);
145 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
146 platform->driver->compr_ops->free(cstream);
148 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
149 mutex_unlock(&fe->card->mutex);
154 * Power down the audio subsystem pmdown_time msecs after close is called.
155 * This is to ensure there are no pops or clicks in between any music tracks
156 * due to DAPM power cycling.
158 static void close_delayed_work(struct work_struct *work)
160 struct snd_soc_pcm_runtime *rtd =
161 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
162 struct snd_soc_dai *codec_dai = rtd->codec_dai;
164 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
166 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
167 codec_dai->driver->playback.stream_name,
168 codec_dai->playback_active ? "active" : "inactive",
169 rtd->pop_wait ? "yes" : "no");
171 /* are we waiting on this codec DAI stream */
172 if (rtd->pop_wait == 1) {
174 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
175 SND_SOC_DAPM_STREAM_STOP);
178 mutex_unlock(&rtd->pcm_mutex);
181 static int soc_compr_free(struct snd_compr_stream *cstream)
183 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
184 struct snd_soc_platform *platform = rtd->platform;
185 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
186 struct snd_soc_dai *codec_dai = rtd->codec_dai;
189 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
191 if (cstream->direction == SND_COMPRESS_PLAYBACK)
192 stream = SNDRV_PCM_STREAM_PLAYBACK;
194 stream = SNDRV_PCM_STREAM_CAPTURE;
196 snd_soc_runtime_deactivate(rtd, stream);
198 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
200 if (!cpu_dai->active)
203 if (!codec_dai->active)
207 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
208 rtd->dai_link->compr_ops->shutdown(cstream);
210 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
211 platform->driver->compr_ops->free(cstream);
213 if (cstream->direction == SND_COMPRESS_PLAYBACK) {
214 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
215 snd_soc_dapm_stream_event(rtd,
216 SNDRV_PCM_STREAM_PLAYBACK,
217 SND_SOC_DAPM_STREAM_STOP);
220 queue_delayed_work(system_power_efficient_wq,
222 msecs_to_jiffies(rtd->pmdown_time));
225 /* capture streams can be powered down now */
226 snd_soc_dapm_stream_event(rtd,
227 SNDRV_PCM_STREAM_CAPTURE,
228 SND_SOC_DAPM_STREAM_STOP);
231 mutex_unlock(&rtd->pcm_mutex);
235 static int soc_compr_free_fe(struct snd_compr_stream *cstream)
237 struct snd_soc_pcm_runtime *fe = cstream->private_data;
238 struct snd_soc_platform *platform = fe->platform;
239 struct snd_soc_dpcm *dpcm;
242 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
244 if (cstream->direction == SND_COMPRESS_PLAYBACK)
245 stream = SNDRV_PCM_STREAM_PLAYBACK;
247 stream = SNDRV_PCM_STREAM_CAPTURE;
249 snd_soc_runtime_deactivate(fe, stream);
251 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
253 ret = dpcm_be_dai_hw_free(fe, stream);
255 dev_err(fe->dev, "compressed hw_free failed %d\n", ret);
257 ret = dpcm_be_dai_shutdown(fe, stream);
259 /* mark FE's links ready to prune */
260 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
261 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
263 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
265 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
266 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
268 dpcm_be_disconnect(fe, stream);
270 fe->dpcm[stream].runtime = NULL;
272 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
273 fe->dai_link->compr_ops->shutdown(cstream);
275 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
276 platform->driver->compr_ops->free(cstream);
278 mutex_unlock(&fe->card->mutex);
282 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
285 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
286 struct snd_soc_platform *platform = rtd->platform;
287 struct snd_soc_dai *codec_dai = rtd->codec_dai;
290 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
292 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
293 ret = platform->driver->compr_ops->trigger(cstream, cmd);
299 case SNDRV_PCM_TRIGGER_START:
300 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
302 case SNDRV_PCM_TRIGGER_STOP:
303 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
308 mutex_unlock(&rtd->pcm_mutex);
312 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
314 struct snd_soc_pcm_runtime *fe = cstream->private_data;
315 struct snd_soc_platform *platform = fe->platform;
318 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
319 cmd == SND_COMPR_TRIGGER_DRAIN) {
321 if (platform->driver->compr_ops &&
322 platform->driver->compr_ops->trigger)
323 return platform->driver->compr_ops->trigger(cstream,
327 if (cstream->direction == SND_COMPRESS_PLAYBACK)
328 stream = SNDRV_PCM_STREAM_PLAYBACK;
330 stream = SNDRV_PCM_STREAM_CAPTURE;
333 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
335 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
336 ret = platform->driver->compr_ops->trigger(cstream, cmd);
341 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
343 ret = dpcm_be_dai_trigger(fe, stream, cmd);
346 case SNDRV_PCM_TRIGGER_START:
347 case SNDRV_PCM_TRIGGER_RESUME:
348 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
349 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
351 case SNDRV_PCM_TRIGGER_STOP:
352 case SNDRV_PCM_TRIGGER_SUSPEND:
353 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
355 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
356 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
361 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
362 mutex_unlock(&fe->card->mutex);
366 static int soc_compr_set_params(struct snd_compr_stream *cstream,
367 struct snd_compr_params *params)
369 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
370 struct snd_soc_platform *platform = rtd->platform;
373 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
375 /* first we call set_params for the platform driver
376 * this should configure the soc side
377 * if the machine has compressed ops then we call that as well
378 * expectation is that platform and machine will configure everything
379 * for this compress path, like configuring pcm port for codec
381 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
382 ret = platform->driver->compr_ops->set_params(cstream, params);
387 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
388 ret = rtd->dai_link->compr_ops->set_params(cstream);
393 if (cstream->direction == SND_COMPRESS_PLAYBACK)
394 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
395 SND_SOC_DAPM_STREAM_START);
397 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
398 SND_SOC_DAPM_STREAM_START);
400 /* cancel any delayed stream shutdown that is pending */
402 mutex_unlock(&rtd->pcm_mutex);
404 cancel_delayed_work_sync(&rtd->delayed_work);
409 mutex_unlock(&rtd->pcm_mutex);
413 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
414 struct snd_compr_params *params)
416 struct snd_soc_pcm_runtime *fe = cstream->private_data;
417 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
418 struct snd_soc_platform *platform = fe->platform;
421 if (cstream->direction == SND_COMPRESS_PLAYBACK)
422 stream = SNDRV_PCM_STREAM_PLAYBACK;
424 stream = SNDRV_PCM_STREAM_CAPTURE;
426 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
428 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
429 ret = platform->driver->compr_ops->set_params(cstream, params);
434 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
435 ret = fe->dai_link->compr_ops->set_params(cstream);
441 * Create an empty hw_params for the BE as the machine driver must
442 * fix this up to match DSP decoder and ASRC configuration.
443 * I.e. machine driver fixup for compressed BE is mandatory.
445 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
446 sizeof(struct snd_pcm_hw_params));
448 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
450 ret = dpcm_be_dai_hw_params(fe, stream);
454 ret = dpcm_be_dai_prepare(fe, stream);
458 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
459 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
462 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
463 mutex_unlock(&fe->card->mutex);
467 static int soc_compr_get_params(struct snd_compr_stream *cstream,
468 struct snd_codec *params)
470 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
471 struct snd_soc_platform *platform = rtd->platform;
474 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
476 if (platform->driver->compr_ops && platform->driver->compr_ops->get_params)
477 ret = platform->driver->compr_ops->get_params(cstream, params);
479 mutex_unlock(&rtd->pcm_mutex);
483 static int soc_compr_get_caps(struct snd_compr_stream *cstream,
484 struct snd_compr_caps *caps)
486 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
487 struct snd_soc_platform *platform = rtd->platform;
490 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
492 if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps)
493 ret = platform->driver->compr_ops->get_caps(cstream, caps);
495 mutex_unlock(&rtd->pcm_mutex);
499 static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
500 struct snd_compr_codec_caps *codec)
502 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
503 struct snd_soc_platform *platform = rtd->platform;
506 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
508 if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps)
509 ret = platform->driver->compr_ops->get_codec_caps(cstream, codec);
511 mutex_unlock(&rtd->pcm_mutex);
515 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
517 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
518 struct snd_soc_platform *platform = rtd->platform;
521 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
523 if (platform->driver->compr_ops && platform->driver->compr_ops->ack)
524 ret = platform->driver->compr_ops->ack(cstream, bytes);
526 mutex_unlock(&rtd->pcm_mutex);
530 static int soc_compr_pointer(struct snd_compr_stream *cstream,
531 struct snd_compr_tstamp *tstamp)
533 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
534 struct snd_soc_platform *platform = rtd->platform;
537 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
539 if (platform->driver->compr_ops && platform->driver->compr_ops->pointer)
540 ret = platform->driver->compr_ops->pointer(cstream, tstamp);
542 mutex_unlock(&rtd->pcm_mutex);
546 static int soc_compr_copy(struct snd_compr_stream *cstream,
547 char __user *buf, size_t count)
549 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
550 struct snd_soc_platform *platform = rtd->platform;
553 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
555 if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
556 ret = platform->driver->compr_ops->copy(cstream, buf, count);
558 mutex_unlock(&rtd->pcm_mutex);
562 static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
563 struct snd_compr_metadata *metadata)
565 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
566 struct snd_soc_platform *platform = rtd->platform;
569 if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata)
570 ret = platform->driver->compr_ops->set_metadata(cstream, metadata);
575 static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
576 struct snd_compr_metadata *metadata)
578 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
579 struct snd_soc_platform *platform = rtd->platform;
582 if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata)
583 ret = platform->driver->compr_ops->get_metadata(cstream, metadata);
588 /* ASoC Compress operations */
589 static struct snd_compr_ops soc_compr_ops = {
590 .open = soc_compr_open,
591 .free = soc_compr_free,
592 .set_params = soc_compr_set_params,
593 .set_metadata = soc_compr_set_metadata,
594 .get_metadata = soc_compr_get_metadata,
595 .get_params = soc_compr_get_params,
596 .trigger = soc_compr_trigger,
597 .pointer = soc_compr_pointer,
598 .ack = soc_compr_ack,
599 .get_caps = soc_compr_get_caps,
600 .get_codec_caps = soc_compr_get_codec_caps
603 /* ASoC Dynamic Compress operations */
604 static struct snd_compr_ops soc_compr_dyn_ops = {
605 .open = soc_compr_open_fe,
606 .free = soc_compr_free_fe,
607 .set_params = soc_compr_set_params_fe,
608 .get_params = soc_compr_get_params,
609 .set_metadata = soc_compr_set_metadata,
610 .get_metadata = soc_compr_get_metadata,
611 .trigger = soc_compr_trigger_fe,
612 .pointer = soc_compr_pointer,
613 .ack = soc_compr_ack,
614 .get_caps = soc_compr_get_caps,
615 .get_codec_caps = soc_compr_get_codec_caps
619 * snd_soc_new_compress - create a new compress.
621 * @rtd: The runtime for which we will create compress
622 * @num: the device index number (zero based - shared with normal PCMs)
624 * Return: 0 for success, else error.
626 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
628 struct snd_soc_codec *codec = rtd->codec;
629 struct snd_soc_platform *platform = rtd->platform;
630 struct snd_soc_dai *codec_dai = rtd->codec_dai;
631 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
632 struct snd_compr *compr;
633 struct snd_pcm *be_pcm;
635 int ret = 0, direction = 0;
636 int playback = 0, capture = 0;
638 if (rtd->num_codecs > 1) {
639 dev_err(rtd->card->dev, "Multicodec not supported for compressed stream\n");
643 /* check client and interface hw capabilities */
644 snprintf(new_name, sizeof(new_name), "%s %s-%d",
645 rtd->dai_link->stream_name, codec_dai->name, num);
647 if (codec_dai->driver->playback.channels_min)
649 if (codec_dai->driver->capture.channels_min)
652 capture = capture && cpu_dai->driver->capture.channels_min;
653 playback = playback && cpu_dai->driver->playback.channels_min;
656 * Compress devices are unidirectional so only one of the directions
657 * should be set, check for that (xor)
659 if (playback + capture != 1) {
660 dev_err(rtd->card->dev, "Invalid direction for compress P %d, C %d\n",
666 direction = SND_COMPRESS_PLAYBACK;
668 direction = SND_COMPRESS_CAPTURE;
670 compr = kzalloc(sizeof(*compr), GFP_KERNEL);
672 snd_printk(KERN_ERR "Cannot allocate compr\n");
676 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
678 if (compr->ops == NULL) {
679 dev_err(rtd->card->dev, "Cannot allocate compressed ops\n");
684 if (rtd->dai_link->dynamic) {
685 snprintf(new_name, sizeof(new_name), "(%s)",
686 rtd->dai_link->stream_name);
688 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
689 rtd->dai_link->dpcm_playback,
690 rtd->dai_link->dpcm_capture, &be_pcm);
692 dev_err(rtd->card->dev, "ASoC: can't create compressed for %s\n",
693 rtd->dai_link->name);
699 if (rtd->dai_link->dpcm_playback)
700 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
701 else if (rtd->dai_link->dpcm_capture)
702 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
703 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
705 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
707 /* Add copy callback for not memory mapped DSPs */
708 if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
709 compr->ops->copy = soc_compr_copy;
711 mutex_init(&compr->lock);
713 snprintf(new_name, sizeof(new_name), "%s %s-%d",
714 rtd->dai_link->stream_name,
715 rtd->codec_dai->name, num);
717 ret = snd_compress_new(rtd->card->snd_card, num, direction,
720 pr_err("compress asoc: can't create compress for codec %s\n",
721 codec->component.name);
725 /* DAPM dai link stream work */
726 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
729 compr->private_data = rtd;
731 printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name,
739 EXPORT_SYMBOL_GPL(snd_soc_new_compress);