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1// SPDX-License-Identifier: GPL-2.0+
2//
3// soc-compress.c -- ALSA SoC Compress
4//
5// Copyright (C) 2012 Intel Corp.
6//
7// Authors: Namarta Kohli <namartax.kohli@intel.com>
8// Ramesh Babu K V <ramesh.babu@linux.intel.com>
9// Vinod Koul <vinod.koul@linux.intel.com>
10
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/delay.h>
14#include <linux/slab.h>
15#include <linux/workqueue.h>
16#include <sound/core.h>
17#include <sound/compress_params.h>
18#include <sound/compress_driver.h>
19#include <sound/soc.h>
20#include <sound/initval.h>
21#include <sound/soc-dpcm.h>
22#include <sound/soc-link.h>
23
24static int snd_soc_compr_components_open(struct snd_compr_stream *cstream)
25{
26 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
27 struct snd_soc_component *component;
28 int ret = 0;
29 int i;
30
31 for_each_rtd_components(rtd, i, component) {
32 ret = snd_soc_component_module_get_when_open(component, cstream);
33 if (ret < 0)
34 break;
35
36 ret = snd_soc_component_compr_open(component, cstream);
37 if (ret < 0)
38 break;
39 }
40
41 return ret;
42}
43
44static void snd_soc_compr_components_free(struct snd_compr_stream *cstream,
45 int rollback)
46{
47 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
48 struct snd_soc_component *component;
49 int i;
50
51 for_each_rtd_components(rtd, i, component) {
52 snd_soc_component_compr_free(component, cstream, rollback);
53 snd_soc_component_module_put_when_close(component, cstream, rollback);
54 }
55}
56
57static int soc_compr_clean(struct snd_compr_stream *cstream, int rollback)
58{
59 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
60 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
61 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
62 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
63
64 snd_soc_dpcm_mutex_lock(rtd);
65
66 if (!rollback)
67 snd_soc_runtime_deactivate(rtd, stream);
68
69 snd_soc_dai_digital_mute(codec_dai, 1, stream);
70
71 if (!snd_soc_dai_active(cpu_dai))
72 cpu_dai->rate = 0;
73
74 if (!snd_soc_dai_active(codec_dai))
75 codec_dai->rate = 0;
76
77 snd_soc_link_compr_shutdown(cstream, rollback);
78
79 snd_soc_compr_components_free(cstream, rollback);
80
81 snd_soc_dai_compr_shutdown(cpu_dai, cstream, rollback);
82
83 if (!rollback)
84 snd_soc_dapm_stream_stop(rtd, stream);
85
86 snd_soc_dpcm_mutex_unlock(rtd);
87
88 snd_soc_pcm_component_pm_runtime_put(rtd, cstream, rollback);
89
90 return 0;
91}
92
93static int soc_compr_free(struct snd_compr_stream *cstream)
94{
95 return soc_compr_clean(cstream, 0);
96}
97
98static int soc_compr_open(struct snd_compr_stream *cstream)
99{
100 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
101 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
102 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
103 int ret;
104
105 ret = snd_soc_pcm_component_pm_runtime_get(rtd, cstream);
106 if (ret < 0)
107 goto err_no_lock;
108
109 snd_soc_dpcm_mutex_lock(rtd);
110
111 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
112 if (ret < 0)
113 goto err;
114
115 ret = snd_soc_compr_components_open(cstream);
116 if (ret < 0)
117 goto err;
118
119 ret = snd_soc_link_compr_startup(cstream);
120 if (ret < 0)
121 goto err;
122
123 snd_soc_runtime_activate(rtd, stream);
124err:
125 snd_soc_dpcm_mutex_unlock(rtd);
126err_no_lock:
127 if (ret < 0)
128 soc_compr_clean(cstream, 1);
129
130 return ret;
131}
132
133static int soc_compr_open_fe(struct snd_compr_stream *cstream)
134{
135 struct snd_soc_pcm_runtime *fe = cstream->private_data;
136 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(fe, 0);
137 struct snd_soc_dpcm *dpcm;
138 struct snd_soc_dapm_widget_list *list;
139 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
140 int ret;
141
142 snd_soc_card_mutex_lock(fe->card);
143
144 ret = dpcm_path_get(fe, stream, &list);
145 if (ret < 0)
146 goto be_err;
147
148 snd_soc_dpcm_mutex_lock(fe);
149
150 /* calculate valid and active FE <-> BE dpcms */
151 dpcm_process_paths(fe, stream, &list, 1);
152
153 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
154
155 ret = dpcm_be_dai_startup(fe, stream);
156 if (ret < 0) {
157 /* clean up all links */
158 for_each_dpcm_be(fe, stream, dpcm)
159 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
160
161 dpcm_be_disconnect(fe, stream);
162 goto out;
163 }
164
165 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
166 if (ret < 0)
167 goto out;
168
169 ret = snd_soc_compr_components_open(cstream);
170 if (ret < 0)
171 goto open_err;
172
173 ret = snd_soc_link_compr_startup(cstream);
174 if (ret < 0)
175 goto machine_err;
176
177 dpcm_clear_pending_state(fe, stream);
178 dpcm_path_put(&list);
179
180 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
181 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
182
183 snd_soc_runtime_activate(fe, stream);
184 snd_soc_dpcm_mutex_unlock(fe);
185
186 snd_soc_card_mutex_unlock(fe->card);
187
188 return 0;
189
190machine_err:
191 snd_soc_compr_components_free(cstream, 1);
192open_err:
193 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 1);
194out:
195 dpcm_path_put(&list);
196 snd_soc_dpcm_mutex_unlock(fe);
197be_err:
198 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
199 snd_soc_card_mutex_unlock(fe->card);
200 return ret;
201}
202
203static int soc_compr_free_fe(struct snd_compr_stream *cstream)
204{
205 struct snd_soc_pcm_runtime *fe = cstream->private_data;
206 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(fe, 0);
207 struct snd_soc_dpcm *dpcm;
208 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
209
210 snd_soc_card_mutex_lock(fe->card);
211
212 snd_soc_dpcm_mutex_lock(fe);
213 snd_soc_runtime_deactivate(fe, stream);
214
215 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
216
217 dpcm_be_dai_hw_free(fe, stream);
218
219 dpcm_be_dai_shutdown(fe, stream);
220
221 /* mark FE's links ready to prune */
222 for_each_dpcm_be(fe, stream, dpcm)
223 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
224
225 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
226
227 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
228 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
229
230 dpcm_be_disconnect(fe, stream);
231
232 snd_soc_dpcm_mutex_unlock(fe);
233
234 snd_soc_link_compr_shutdown(cstream, 0);
235
236 snd_soc_compr_components_free(cstream, 0);
237
238 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0);
239
240 snd_soc_card_mutex_unlock(fe->card);
241 return 0;
242}
243
244static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
245{
246 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
247 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
248 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
249 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
250 int ret;
251
252 snd_soc_dpcm_mutex_lock(rtd);
253
254 ret = snd_soc_component_compr_trigger(cstream, cmd);
255 if (ret < 0)
256 goto out;
257
258 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
259 if (ret < 0)
260 goto out;
261
262 switch (cmd) {
263 case SNDRV_PCM_TRIGGER_START:
264 snd_soc_dai_digital_mute(codec_dai, 0, stream);
265 break;
266 case SNDRV_PCM_TRIGGER_STOP:
267 snd_soc_dai_digital_mute(codec_dai, 1, stream);
268 break;
269 }
270
271out:
272 snd_soc_dpcm_mutex_unlock(rtd);
273 return ret;
274}
275
276static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
277{
278 struct snd_soc_pcm_runtime *fe = cstream->private_data;
279 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(fe, 0);
280 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
281 int ret;
282
283 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
284 cmd == SND_COMPR_TRIGGER_DRAIN)
285 return snd_soc_component_compr_trigger(cstream, cmd);
286
287 snd_soc_card_mutex_lock(fe->card);
288
289 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
290 if (ret < 0)
291 goto out;
292
293 ret = snd_soc_component_compr_trigger(cstream, cmd);
294 if (ret < 0)
295 goto out;
296
297 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
298
299 ret = dpcm_be_dai_trigger(fe, stream, cmd);
300
301 switch (cmd) {
302 case SNDRV_PCM_TRIGGER_START:
303 case SNDRV_PCM_TRIGGER_RESUME:
304 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
305 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
306 break;
307 case SNDRV_PCM_TRIGGER_STOP:
308 case SNDRV_PCM_TRIGGER_SUSPEND:
309 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
310 break;
311 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
312 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
313 break;
314 }
315
316out:
317 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
318 snd_soc_card_mutex_unlock(fe->card);
319 return ret;
320}
321
322static int soc_compr_set_params(struct snd_compr_stream *cstream,
323 struct snd_compr_params *params)
324{
325 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
326 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
327 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
328 int ret;
329
330 snd_soc_dpcm_mutex_lock(rtd);
331
332 /*
333 * First we call set_params for the CPU DAI, then the component
334 * driver this should configure the SoC side. If the machine has
335 * compressed ops then we call that as well. The expectation is
336 * that these callbacks will configure everything for this compress
337 * path, like configuring a PCM port for a CODEC.
338 */
339 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
340 if (ret < 0)
341 goto err;
342
343 ret = snd_soc_component_compr_set_params(cstream, params);
344 if (ret < 0)
345 goto err;
346
347 ret = snd_soc_link_compr_set_params(cstream);
348 if (ret < 0)
349 goto err;
350
351 snd_soc_dapm_stream_event(rtd, stream, SND_SOC_DAPM_STREAM_START);
352
353 /* cancel any delayed stream shutdown that is pending */
354 rtd->pop_wait = 0;
355 snd_soc_dpcm_mutex_unlock(rtd);
356
357 cancel_delayed_work_sync(&rtd->delayed_work);
358
359 return 0;
360
361err:
362 snd_soc_dpcm_mutex_unlock(rtd);
363 return ret;
364}
365
366static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
367 struct snd_compr_params *params)
368{
369 struct snd_soc_pcm_runtime *fe = cstream->private_data;
370 struct snd_pcm_substream *fe_substream =
371 fe->pcm->streams[cstream->direction].substream;
372 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(fe, 0);
373 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
374 int ret;
375
376 snd_soc_card_mutex_lock(fe->card);
377
378 /*
379 * Create an empty hw_params for the BE as the machine driver must
380 * fix this up to match DSP decoder and ASRC configuration.
381 * I.e. machine driver fixup for compressed BE is mandatory.
382 */
383 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
384 sizeof(struct snd_pcm_hw_params));
385
386 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
387
388 ret = dpcm_be_dai_hw_params(fe, stream);
389 if (ret < 0)
390 goto out;
391
392 ret = dpcm_be_dai_prepare(fe, stream);
393 if (ret < 0)
394 goto out;
395
396 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
397 if (ret < 0)
398 goto out;
399
400 ret = snd_soc_component_compr_set_params(cstream, params);
401 if (ret < 0)
402 goto out;
403
404 ret = snd_soc_link_compr_set_params(cstream);
405 if (ret < 0)
406 goto out;
407 snd_soc_dpcm_mutex_lock(fe);
408 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
409 snd_soc_dpcm_mutex_unlock(fe);
410 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
411
412out:
413 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
414 snd_soc_card_mutex_unlock(fe->card);
415 return ret;
416}
417
418static int soc_compr_get_params(struct snd_compr_stream *cstream,
419 struct snd_codec *params)
420{
421 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
422 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
423 int ret = 0;
424
425 snd_soc_dpcm_mutex_lock(rtd);
426
427 ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params);
428 if (ret < 0)
429 goto err;
430
431 ret = snd_soc_component_compr_get_params(cstream, params);
432err:
433 snd_soc_dpcm_mutex_unlock(rtd);
434 return ret;
435}
436
437static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
438{
439 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
440 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
441 int ret;
442
443 snd_soc_dpcm_mutex_lock(rtd);
444
445 ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes);
446 if (ret < 0)
447 goto err;
448
449 ret = snd_soc_component_compr_ack(cstream, bytes);
450err:
451 snd_soc_dpcm_mutex_unlock(rtd);
452 return ret;
453}
454
455static int soc_compr_pointer(struct snd_compr_stream *cstream,
456 struct snd_compr_tstamp *tstamp)
457{
458 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
459 int ret;
460 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
461
462 snd_soc_dpcm_mutex_lock(rtd);
463
464 ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp);
465 if (ret < 0)
466 goto out;
467
468 ret = snd_soc_component_compr_pointer(cstream, tstamp);
469out:
470 snd_soc_dpcm_mutex_unlock(rtd);
471 return ret;
472}
473
474static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
475 struct snd_compr_metadata *metadata)
476{
477 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
478 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
479 int ret;
480
481 ret = snd_soc_dai_compr_set_metadata(cpu_dai, cstream, metadata);
482 if (ret < 0)
483 return ret;
484
485 return snd_soc_component_compr_set_metadata(cstream, metadata);
486}
487
488static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
489 struct snd_compr_metadata *metadata)
490{
491 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
492 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
493 int ret;
494
495 ret = snd_soc_dai_compr_get_metadata(cpu_dai, cstream, metadata);
496 if (ret < 0)
497 return ret;
498
499 return snd_soc_component_compr_get_metadata(cstream, metadata);
500}
501
502/* ASoC Compress operations */
503static struct snd_compr_ops soc_compr_ops = {
504 .open = soc_compr_open,
505 .free = soc_compr_free,
506 .set_params = soc_compr_set_params,
507 .set_metadata = soc_compr_set_metadata,
508 .get_metadata = soc_compr_get_metadata,
509 .get_params = soc_compr_get_params,
510 .trigger = soc_compr_trigger,
511 .pointer = soc_compr_pointer,
512 .ack = soc_compr_ack,
513 .get_caps = snd_soc_component_compr_get_caps,
514 .get_codec_caps = snd_soc_component_compr_get_codec_caps,
515};
516
517/* ASoC Dynamic Compress operations */
518static struct snd_compr_ops soc_compr_dyn_ops = {
519 .open = soc_compr_open_fe,
520 .free = soc_compr_free_fe,
521 .set_params = soc_compr_set_params_fe,
522 .get_params = soc_compr_get_params,
523 .set_metadata = soc_compr_set_metadata,
524 .get_metadata = soc_compr_get_metadata,
525 .trigger = soc_compr_trigger_fe,
526 .pointer = soc_compr_pointer,
527 .ack = soc_compr_ack,
528 .get_caps = snd_soc_component_compr_get_caps,
529 .get_codec_caps = snd_soc_component_compr_get_codec_caps,
530};
531
532/**
533 * snd_soc_new_compress - create a new compress.
534 *
535 * @rtd: The runtime for which we will create compress
536 * @num: the device index number (zero based - shared with normal PCMs)
537 *
538 * Return: 0 for success, else error.
539 */
540int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
541{
542 struct snd_soc_component *component;
543 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
544 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
545 struct snd_compr *compr;
546 struct snd_pcm *be_pcm;
547 char new_name[64];
548 int ret = 0, direction = 0;
549 int playback = 0, capture = 0;
550 int i;
551
552 /*
553 * make sure these are same value,
554 * and then use these as equally
555 */
556 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_PLAYBACK != (int)SND_COMPRESS_PLAYBACK);
557 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_CAPTURE != (int)SND_COMPRESS_CAPTURE);
558
559 if (rtd->dai_link->num_cpus > 1 ||
560 rtd->dai_link->num_codecs > 1) {
561 dev_err(rtd->card->dev,
562 "Compress ASoC: Multi CPU/Codec not supported\n");
563 return -EINVAL;
564 }
565
566 if (!codec_dai) {
567 dev_err(rtd->card->dev, "Missing codec\n");
568 return -EINVAL;
569 }
570
571 /* check client and interface hw capabilities */
572 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
573 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
574 playback = 1;
575 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
576 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
577 capture = 1;
578
579 /*
580 * Compress devices are unidirectional so only one of the directions
581 * should be set, check for that (xor)
582 */
583 if (playback + capture != 1) {
584 dev_err(rtd->card->dev,
585 "Compress ASoC: Invalid direction for P %d, C %d\n",
586 playback, capture);
587 return -EINVAL;
588 }
589
590 if (playback)
591 direction = SND_COMPRESS_PLAYBACK;
592 else
593 direction = SND_COMPRESS_CAPTURE;
594
595 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
596 if (!compr)
597 return -ENOMEM;
598
599 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
600 GFP_KERNEL);
601 if (!compr->ops)
602 return -ENOMEM;
603
604 if (rtd->dai_link->dynamic) {
605 snprintf(new_name, sizeof(new_name), "(%s)",
606 rtd->dai_link->stream_name);
607
608 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
609 rtd->dai_link->dpcm_playback,
610 rtd->dai_link->dpcm_capture, &be_pcm);
611 if (ret < 0) {
612 dev_err(rtd->card->dev,
613 "Compress ASoC: can't create compressed for %s: %d\n",
614 rtd->dai_link->name, ret);
615 return ret;
616 }
617
618 /* inherit atomicity from DAI link */
619 be_pcm->nonatomic = rtd->dai_link->nonatomic;
620
621 rtd->pcm = be_pcm;
622 rtd->fe_compr = 1;
623 if (rtd->dai_link->dpcm_playback)
624 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
625 if (rtd->dai_link->dpcm_capture)
626 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
627 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
628 } else {
629 snprintf(new_name, sizeof(new_name), "%s %s-%d",
630 rtd->dai_link->stream_name, codec_dai->name, num);
631
632 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
633 }
634
635 for_each_rtd_components(rtd, i, component) {
636 if (!component->driver->compress_ops ||
637 !component->driver->compress_ops->copy)
638 continue;
639
640 compr->ops->copy = snd_soc_component_compr_copy;
641 break;
642 }
643
644 ret = snd_compress_new(rtd->card->snd_card, num, direction,
645 new_name, compr);
646 if (ret < 0) {
647 component = snd_soc_rtd_to_codec(rtd, 0)->component;
648 dev_err(component->dev,
649 "Compress ASoC: can't create compress for codec %s: %d\n",
650 component->name, ret);
651 return ret;
652 }
653
654 /* DAPM dai link stream work */
655 rtd->close_delayed_work_func = snd_soc_close_delayed_work;
656
657 rtd->compr = compr;
658 compr->private_data = rtd;
659
660 dev_dbg(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
661 codec_dai->name, cpu_dai->name);
662
663 return 0;
664}
665EXPORT_SYMBOL_GPL(snd_soc_new_compress);