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