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