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