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
);