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
snd_soc_compr_components_open(struct snd_compr_stream * cstream)25 static int snd_soc_compr_components_open(struct snd_compr_stream *cstream)
26 {
27 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
28 struct snd_soc_component *component;
29 int ret = 0;
30 int i;
31
32 for_each_rtd_components(rtd, i, component) {
33 ret = snd_soc_component_module_get_when_open(component, cstream);
34 if (ret < 0)
35 break;
36
37 ret = snd_soc_component_compr_open(component, cstream);
38 if (ret < 0)
39 break;
40 }
41
42 return ret;
43 }
44
snd_soc_compr_components_free(struct snd_compr_stream * cstream,int rollback)45 static void snd_soc_compr_components_free(struct snd_compr_stream *cstream,
46 int rollback)
47 {
48 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
49 struct snd_soc_component *component;
50 int i;
51
52 for_each_rtd_components(rtd, i, component) {
53 snd_soc_component_compr_free(component, cstream, rollback);
54 snd_soc_component_module_put_when_close(component, cstream, rollback);
55 }
56 }
57
soc_compr_clean(struct snd_compr_stream * cstream,int rollback)58 static int soc_compr_clean(struct snd_compr_stream *cstream, int rollback)
59 {
60 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
61 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
62 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
63 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
64
65 snd_soc_dpcm_mutex_lock(rtd);
66
67 if (!rollback)
68 snd_soc_runtime_deactivate(rtd, stream);
69
70 snd_soc_dai_digital_mute(codec_dai, 1, stream);
71
72 if (!snd_soc_dai_active(cpu_dai))
73 cpu_dai->rate = 0;
74
75 if (!snd_soc_dai_active(codec_dai))
76 codec_dai->rate = 0;
77
78 snd_soc_link_compr_shutdown(cstream, rollback);
79
80 snd_soc_compr_components_free(cstream, rollback);
81
82 snd_soc_dai_compr_shutdown(cpu_dai, cstream, rollback);
83
84 if (!rollback)
85 snd_soc_dapm_stream_stop(rtd, stream);
86
87 snd_soc_dpcm_mutex_unlock(rtd);
88
89 snd_soc_pcm_component_pm_runtime_put(rtd, cstream, rollback);
90
91 return 0;
92 }
93
soc_compr_free(struct snd_compr_stream * cstream)94 static int soc_compr_free(struct snd_compr_stream *cstream)
95 {
96 return soc_compr_clean(cstream, 0);
97 }
98
soc_compr_open(struct snd_compr_stream * cstream)99 static int soc_compr_open(struct snd_compr_stream *cstream)
100 {
101 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
102 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
103 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
104 int ret;
105
106 ret = snd_soc_pcm_component_pm_runtime_get(rtd, cstream);
107 if (ret < 0)
108 goto err_no_lock;
109
110 snd_soc_dpcm_mutex_lock(rtd);
111
112 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
113 if (ret < 0)
114 goto err;
115
116 ret = snd_soc_compr_components_open(cstream);
117 if (ret < 0)
118 goto err;
119
120 ret = snd_soc_link_compr_startup(cstream);
121 if (ret < 0)
122 goto err;
123
124 snd_soc_runtime_activate(rtd, stream);
125 err:
126 snd_soc_dpcm_mutex_unlock(rtd);
127 err_no_lock:
128 if (ret < 0)
129 soc_compr_clean(cstream, 1);
130
131 return ret;
132 }
133
soc_compr_open_fe(struct snd_compr_stream * cstream)134 static int soc_compr_open_fe(struct snd_compr_stream *cstream)
135 {
136 struct snd_soc_pcm_runtime *fe = cstream->private_data;
137 struct snd_pcm_substream *fe_substream =
138 fe->pcm->streams[cstream->direction].substream;
139 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
140 struct snd_soc_dpcm *dpcm;
141 struct snd_soc_dapm_widget_list *list;
142 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
143 int ret;
144
145 snd_soc_card_mutex_lock(fe->card);
146 fe->dpcm[stream].runtime = fe_substream->runtime;
147
148 ret = dpcm_path_get(fe, stream, &list);
149 if (ret < 0)
150 goto be_err;
151
152 snd_soc_dpcm_mutex_lock(fe);
153
154 /* calculate valid and active FE <-> BE dpcms */
155 dpcm_process_paths(fe, stream, &list, 1);
156 fe->dpcm[stream].runtime = fe_substream->runtime;
157
158 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
159
160 ret = dpcm_be_dai_startup(fe, stream);
161 if (ret < 0) {
162 /* clean up all links */
163 for_each_dpcm_be(fe, stream, dpcm)
164 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
165
166 dpcm_be_disconnect(fe, stream);
167 fe->dpcm[stream].runtime = NULL;
168 goto out;
169 }
170
171 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
172 if (ret < 0)
173 goto out;
174
175 ret = snd_soc_compr_components_open(cstream);
176 if (ret < 0)
177 goto open_err;
178
179 ret = snd_soc_link_compr_startup(cstream);
180 if (ret < 0)
181 goto machine_err;
182
183 dpcm_clear_pending_state(fe, stream);
184 dpcm_path_put(&list);
185
186 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
187 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
188
189 snd_soc_runtime_activate(fe, stream);
190 snd_soc_dpcm_mutex_unlock(fe);
191
192 snd_soc_card_mutex_unlock(fe->card);
193
194 return 0;
195
196 machine_err:
197 snd_soc_compr_components_free(cstream, 1);
198 open_err:
199 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 1);
200 out:
201 dpcm_path_put(&list);
202 snd_soc_dpcm_mutex_unlock(fe);
203 be_err:
204 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
205 snd_soc_card_mutex_unlock(fe->card);
206 return ret;
207 }
208
soc_compr_free_fe(struct snd_compr_stream * cstream)209 static int soc_compr_free_fe(struct snd_compr_stream *cstream)
210 {
211 struct snd_soc_pcm_runtime *fe = cstream->private_data;
212 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
213 struct snd_soc_dpcm *dpcm;
214 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
215
216 snd_soc_card_mutex_lock(fe->card);
217
218 snd_soc_dpcm_mutex_lock(fe);
219 snd_soc_runtime_deactivate(fe, stream);
220
221 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
222
223 dpcm_be_dai_hw_free(fe, stream);
224
225 dpcm_be_dai_shutdown(fe, stream);
226
227 /* mark FE's links ready to prune */
228 for_each_dpcm_be(fe, stream, dpcm)
229 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
230
231 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
232
233 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
234 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
235
236 dpcm_be_disconnect(fe, stream);
237
238 snd_soc_dpcm_mutex_unlock(fe);
239
240 fe->dpcm[stream].runtime = NULL;
241
242 snd_soc_link_compr_shutdown(cstream, 0);
243
244 snd_soc_compr_components_free(cstream, 0);
245
246 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0);
247
248 snd_soc_card_mutex_unlock(fe->card);
249 return 0;
250 }
251
soc_compr_trigger(struct snd_compr_stream * cstream,int cmd)252 static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
253 {
254 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
255 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
256 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
257 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
258 int ret;
259
260 snd_soc_dpcm_mutex_lock(rtd);
261
262 ret = snd_soc_component_compr_trigger(cstream, cmd);
263 if (ret < 0)
264 goto out;
265
266 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
267 if (ret < 0)
268 goto out;
269
270 switch (cmd) {
271 case SNDRV_PCM_TRIGGER_START:
272 snd_soc_dai_digital_mute(codec_dai, 0, stream);
273 break;
274 case SNDRV_PCM_TRIGGER_STOP:
275 snd_soc_dai_digital_mute(codec_dai, 1, stream);
276 break;
277 }
278
279 out:
280 snd_soc_dpcm_mutex_unlock(rtd);
281 return ret;
282 }
283
soc_compr_trigger_fe(struct snd_compr_stream * cstream,int cmd)284 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
285 {
286 struct snd_soc_pcm_runtime *fe = cstream->private_data;
287 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
288 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
289 int ret;
290
291 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
292 cmd == SND_COMPR_TRIGGER_DRAIN)
293 return snd_soc_component_compr_trigger(cstream, cmd);
294
295 snd_soc_card_mutex_lock(fe->card);
296
297 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
298 if (ret < 0)
299 goto out;
300
301 ret = snd_soc_component_compr_trigger(cstream, cmd);
302 if (ret < 0)
303 goto out;
304
305 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
306
307 ret = dpcm_be_dai_trigger(fe, stream, cmd);
308
309 switch (cmd) {
310 case SNDRV_PCM_TRIGGER_START:
311 case SNDRV_PCM_TRIGGER_RESUME:
312 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
313 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
314 break;
315 case SNDRV_PCM_TRIGGER_STOP:
316 case SNDRV_PCM_TRIGGER_SUSPEND:
317 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
318 break;
319 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
320 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
321 break;
322 }
323
324 out:
325 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
326 snd_soc_card_mutex_unlock(fe->card);
327 return ret;
328 }
329
soc_compr_set_params(struct snd_compr_stream * cstream,struct snd_compr_params * params)330 static int soc_compr_set_params(struct snd_compr_stream *cstream,
331 struct snd_compr_params *params)
332 {
333 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
334 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
335 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
336 int ret;
337
338 snd_soc_dpcm_mutex_lock(rtd);
339
340 /*
341 * First we call set_params for the CPU DAI, then the component
342 * driver this should configure the SoC side. If the machine has
343 * compressed ops then we call that as well. The expectation is
344 * that these callbacks will configure everything for this compress
345 * path, like configuring a PCM port for a CODEC.
346 */
347 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
348 if (ret < 0)
349 goto err;
350
351 ret = snd_soc_component_compr_set_params(cstream, params);
352 if (ret < 0)
353 goto err;
354
355 ret = snd_soc_link_compr_set_params(cstream);
356 if (ret < 0)
357 goto err;
358
359 snd_soc_dapm_stream_event(rtd, stream, SND_SOC_DAPM_STREAM_START);
360
361 /* cancel any delayed stream shutdown that is pending */
362 rtd->pop_wait = 0;
363 snd_soc_dpcm_mutex_unlock(rtd);
364
365 cancel_delayed_work_sync(&rtd->delayed_work);
366
367 return 0;
368
369 err:
370 snd_soc_dpcm_mutex_unlock(rtd);
371 return ret;
372 }
373
soc_compr_set_params_fe(struct snd_compr_stream * cstream,struct snd_compr_params * params)374 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
375 struct snd_compr_params *params)
376 {
377 struct snd_soc_pcm_runtime *fe = cstream->private_data;
378 struct snd_pcm_substream *fe_substream =
379 fe->pcm->streams[cstream->direction].substream;
380 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
381 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
382 int ret;
383
384 snd_soc_card_mutex_lock(fe->card);
385
386 /*
387 * Create an empty hw_params for the BE as the machine driver must
388 * fix this up to match DSP decoder and ASRC configuration.
389 * I.e. machine driver fixup for compressed BE is mandatory.
390 */
391 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
392 sizeof(struct snd_pcm_hw_params));
393
394 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
395
396 ret = dpcm_be_dai_hw_params(fe, stream);
397 if (ret < 0)
398 goto out;
399
400 ret = dpcm_be_dai_prepare(fe, stream);
401 if (ret < 0)
402 goto out;
403
404 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
405 if (ret < 0)
406 goto out;
407
408 ret = snd_soc_component_compr_set_params(cstream, params);
409 if (ret < 0)
410 goto out;
411
412 ret = snd_soc_link_compr_set_params(cstream);
413 if (ret < 0)
414 goto out;
415 snd_soc_dpcm_mutex_lock(fe);
416 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
417 snd_soc_dpcm_mutex_unlock(fe);
418 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
419
420 out:
421 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
422 snd_soc_card_mutex_unlock(fe->card);
423 return ret;
424 }
425
soc_compr_get_params(struct snd_compr_stream * cstream,struct snd_codec * params)426 static int soc_compr_get_params(struct snd_compr_stream *cstream,
427 struct snd_codec *params)
428 {
429 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
430 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
431 int ret = 0;
432
433 snd_soc_dpcm_mutex_lock(rtd);
434
435 ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params);
436 if (ret < 0)
437 goto err;
438
439 ret = snd_soc_component_compr_get_params(cstream, params);
440 err:
441 snd_soc_dpcm_mutex_unlock(rtd);
442 return ret;
443 }
444
soc_compr_ack(struct snd_compr_stream * cstream,size_t bytes)445 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
446 {
447 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
448 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
449 int ret;
450
451 snd_soc_dpcm_mutex_lock(rtd);
452
453 ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes);
454 if (ret < 0)
455 goto err;
456
457 ret = snd_soc_component_compr_ack(cstream, bytes);
458 err:
459 snd_soc_dpcm_mutex_unlock(rtd);
460 return ret;
461 }
462
soc_compr_pointer(struct snd_compr_stream * cstream,struct snd_compr_tstamp * tstamp)463 static int soc_compr_pointer(struct snd_compr_stream *cstream,
464 struct snd_compr_tstamp *tstamp)
465 {
466 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
467 int ret;
468 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
469
470 snd_soc_dpcm_mutex_lock(rtd);
471
472 ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp);
473 if (ret < 0)
474 goto out;
475
476 ret = snd_soc_component_compr_pointer(cstream, tstamp);
477 out:
478 snd_soc_dpcm_mutex_unlock(rtd);
479 return ret;
480 }
481
soc_compr_set_metadata(struct snd_compr_stream * cstream,struct snd_compr_metadata * metadata)482 static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
483 struct snd_compr_metadata *metadata)
484 {
485 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
486 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
487 int ret;
488
489 ret = snd_soc_dai_compr_set_metadata(cpu_dai, cstream, metadata);
490 if (ret < 0)
491 return ret;
492
493 return snd_soc_component_compr_set_metadata(cstream, metadata);
494 }
495
soc_compr_get_metadata(struct snd_compr_stream * cstream,struct snd_compr_metadata * metadata)496 static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
497 struct snd_compr_metadata *metadata)
498 {
499 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
500 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
501 int ret;
502
503 ret = snd_soc_dai_compr_get_metadata(cpu_dai, cstream, metadata);
504 if (ret < 0)
505 return ret;
506
507 return snd_soc_component_compr_get_metadata(cstream, metadata);
508 }
509
510 /* ASoC Compress operations */
511 static struct snd_compr_ops soc_compr_ops = {
512 .open = soc_compr_open,
513 .free = soc_compr_free,
514 .set_params = soc_compr_set_params,
515 .set_metadata = soc_compr_set_metadata,
516 .get_metadata = soc_compr_get_metadata,
517 .get_params = soc_compr_get_params,
518 .trigger = soc_compr_trigger,
519 .pointer = soc_compr_pointer,
520 .ack = soc_compr_ack,
521 .get_caps = snd_soc_component_compr_get_caps,
522 .get_codec_caps = snd_soc_component_compr_get_codec_caps,
523 };
524
525 /* ASoC Dynamic Compress operations */
526 static struct snd_compr_ops soc_compr_dyn_ops = {
527 .open = soc_compr_open_fe,
528 .free = soc_compr_free_fe,
529 .set_params = soc_compr_set_params_fe,
530 .get_params = soc_compr_get_params,
531 .set_metadata = soc_compr_set_metadata,
532 .get_metadata = soc_compr_get_metadata,
533 .trigger = soc_compr_trigger_fe,
534 .pointer = soc_compr_pointer,
535 .ack = soc_compr_ack,
536 .get_caps = snd_soc_component_compr_get_caps,
537 .get_codec_caps = snd_soc_component_compr_get_codec_caps,
538 };
539
540 /**
541 * snd_soc_new_compress - create a new compress.
542 *
543 * @rtd: The runtime for which we will create compress
544 * @num: the device index number (zero based - shared with normal PCMs)
545 *
546 * Return: 0 for success, else error.
547 */
snd_soc_new_compress(struct snd_soc_pcm_runtime * rtd,int num)548 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
549 {
550 struct snd_soc_component *component;
551 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
552 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
553 struct snd_compr *compr;
554 struct snd_pcm *be_pcm;
555 char new_name[64];
556 int ret = 0, direction = 0;
557 int playback = 0, capture = 0;
558 int i;
559
560 /*
561 * make sure these are same value,
562 * and then use these as equally
563 */
564 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_PLAYBACK != (int)SND_COMPRESS_PLAYBACK);
565 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_CAPTURE != (int)SND_COMPRESS_CAPTURE);
566
567 if (rtd->dai_link->num_cpus > 1 ||
568 rtd->dai_link->num_codecs > 1) {
569 dev_err(rtd->card->dev,
570 "Compress ASoC: Multi CPU/Codec not supported\n");
571 return -EINVAL;
572 }
573
574 if (!codec_dai) {
575 dev_err(rtd->card->dev, "Missing codec\n");
576 return -EINVAL;
577 }
578
579 /* check client and interface hw capabilities */
580 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
581 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
582 playback = 1;
583 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
584 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
585 capture = 1;
586
587 /*
588 * Compress devices are unidirectional so only one of the directions
589 * should be set, check for that (xor)
590 */
591 if (playback + capture != 1) {
592 dev_err(rtd->card->dev,
593 "Compress ASoC: Invalid direction for P %d, C %d\n",
594 playback, capture);
595 return -EINVAL;
596 }
597
598 if (playback)
599 direction = SND_COMPRESS_PLAYBACK;
600 else
601 direction = SND_COMPRESS_CAPTURE;
602
603 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
604 if (!compr)
605 return -ENOMEM;
606
607 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
608 GFP_KERNEL);
609 if (!compr->ops)
610 return -ENOMEM;
611
612 if (rtd->dai_link->dynamic) {
613 snprintf(new_name, sizeof(new_name), "(%s)",
614 rtd->dai_link->stream_name);
615
616 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
617 rtd->dai_link->dpcm_playback,
618 rtd->dai_link->dpcm_capture, &be_pcm);
619 if (ret < 0) {
620 dev_err(rtd->card->dev,
621 "Compress ASoC: can't create compressed for %s: %d\n",
622 rtd->dai_link->name, ret);
623 return ret;
624 }
625
626 /* inherit atomicity from DAI link */
627 be_pcm->nonatomic = rtd->dai_link->nonatomic;
628
629 rtd->pcm = be_pcm;
630 rtd->fe_compr = 1;
631 if (rtd->dai_link->dpcm_playback)
632 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
633 if (rtd->dai_link->dpcm_capture)
634 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
635 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
636 } else {
637 snprintf(new_name, sizeof(new_name), "%s %s-%d",
638 rtd->dai_link->stream_name, codec_dai->name, num);
639
640 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
641 }
642
643 for_each_rtd_components(rtd, i, component) {
644 if (!component->driver->compress_ops ||
645 !component->driver->compress_ops->copy)
646 continue;
647
648 compr->ops->copy = snd_soc_component_compr_copy;
649 break;
650 }
651
652 ret = snd_compress_new(rtd->card->snd_card, num, direction,
653 new_name, compr);
654 if (ret < 0) {
655 component = asoc_rtd_to_codec(rtd, 0)->component;
656 dev_err(component->dev,
657 "Compress ASoC: can't create compress for codec %s: %d\n",
658 component->name, ret);
659 return ret;
660 }
661
662 /* DAPM dai link stream work */
663 rtd->close_delayed_work_func = snd_soc_close_delayed_work;
664
665 rtd->compr = compr;
666 compr->private_data = rtd;
667
668 dev_dbg(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
669 codec_dai->name, cpu_dai->name);
670
671 return 0;
672 }
673 EXPORT_SYMBOL_GPL(snd_soc_new_compress);
674