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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#include <linux/pm_runtime.h>
24
25static 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
45static 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
58static 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 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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 mutex_unlock(&rtd->card->pcm_mutex);
88
89 snd_soc_pcm_component_pm_runtime_put(rtd, cstream, rollback);
90
91 return 0;
92}
93
94static int soc_compr_free(struct snd_compr_stream *cstream)
95{
96 return soc_compr_clean(cstream, 0);
97}
98
99static 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 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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);
125err:
126 mutex_unlock(&rtd->card->pcm_mutex);
127err_no_lock:
128 if (ret < 0)
129 soc_compr_clean(cstream, 1);
130
131 return ret;
132}
133
134static 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 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
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 /* calculate valid and active FE <-> BE dpcms */
153 dpcm_process_paths(fe, stream, &list, 1);
154 fe->dpcm[stream].runtime = fe_substream->runtime;
155
156 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
157
158 ret = dpcm_be_dai_startup(fe, stream);
159 if (ret < 0) {
160 /* clean up all links */
161 for_each_dpcm_be(fe, stream, dpcm)
162 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
163
164 dpcm_be_disconnect(fe, stream);
165 fe->dpcm[stream].runtime = NULL;
166 goto out;
167 }
168
169 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
170 if (ret < 0)
171 goto out;
172
173 ret = snd_soc_compr_components_open(cstream);
174 if (ret < 0)
175 goto open_err;
176
177 ret = snd_soc_link_compr_startup(cstream);
178 if (ret < 0)
179 goto machine_err;
180
181 dpcm_clear_pending_state(fe, stream);
182 dpcm_path_put(&list);
183
184 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
185 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
186
187 mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
188 snd_soc_runtime_activate(fe, stream);
189 mutex_unlock(&fe->card->pcm_mutex);
190
191 mutex_unlock(&fe->card->mutex);
192
193 return 0;
194
195machine_err:
196 snd_soc_compr_components_free(cstream, 1);
197open_err:
198 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 1);
199out:
200 dpcm_path_put(&list);
201be_err:
202 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
203 mutex_unlock(&fe->card->mutex);
204 return ret;
205}
206
207static int soc_compr_free_fe(struct snd_compr_stream *cstream)
208{
209 struct snd_soc_pcm_runtime *fe = cstream->private_data;
210 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
211 struct snd_soc_dpcm *dpcm;
212 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
213
214 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
215
216 mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
217 snd_soc_runtime_deactivate(fe, stream);
218 mutex_unlock(&fe->card->pcm_mutex);
219
220 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
221
222 dpcm_be_dai_hw_free(fe, stream);
223
224 dpcm_be_dai_shutdown(fe, stream);
225
226 /* mark FE's links ready to prune */
227 for_each_dpcm_be(fe, stream, dpcm)
228 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
229
230 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
231
232 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
233 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
234
235 dpcm_be_disconnect(fe, stream);
236
237 fe->dpcm[stream].runtime = NULL;
238
239 snd_soc_link_compr_shutdown(cstream, 0);
240
241 snd_soc_compr_components_free(cstream, 0);
242
243 snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0);
244
245 mutex_unlock(&fe->card->mutex);
246 return 0;
247}
248
249static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
250{
251 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
252 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
253 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
254 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
255 int ret;
256
257 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
258
259 ret = snd_soc_component_compr_trigger(cstream, cmd);
260 if (ret < 0)
261 goto out;
262
263 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
264 if (ret < 0)
265 goto out;
266
267 switch (cmd) {
268 case SNDRV_PCM_TRIGGER_START:
269 snd_soc_dai_digital_mute(codec_dai, 0, stream);
270 break;
271 case SNDRV_PCM_TRIGGER_STOP:
272 snd_soc_dai_digital_mute(codec_dai, 1, stream);
273 break;
274 }
275
276out:
277 mutex_unlock(&rtd->card->pcm_mutex);
278 return ret;
279}
280
281static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
282{
283 struct snd_soc_pcm_runtime *fe = cstream->private_data;
284 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
285 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
286 int ret;
287
288 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
289 cmd == SND_COMPR_TRIGGER_DRAIN)
290 return snd_soc_component_compr_trigger(cstream, cmd);
291
292 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
293
294 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
295 if (ret < 0)
296 goto out;
297
298 ret = snd_soc_component_compr_trigger(cstream, cmd);
299 if (ret < 0)
300 goto out;
301
302 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
303
304 ret = dpcm_be_dai_trigger(fe, stream, cmd);
305
306 switch (cmd) {
307 case SNDRV_PCM_TRIGGER_START:
308 case SNDRV_PCM_TRIGGER_RESUME:
309 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
310 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
311 break;
312 case SNDRV_PCM_TRIGGER_STOP:
313 case SNDRV_PCM_TRIGGER_SUSPEND:
314 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
315 break;
316 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
317 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
318 break;
319 }
320
321out:
322 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
323 mutex_unlock(&fe->card->mutex);
324 return ret;
325}
326
327static int soc_compr_set_params(struct snd_compr_stream *cstream,
328 struct snd_compr_params *params)
329{
330 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
331 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
332 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
333 int ret;
334
335 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
336
337 /*
338 * First we call set_params for the CPU DAI, then the component
339 * driver this should configure the SoC side. If the machine has
340 * compressed ops then we call that as well. The expectation is
341 * that these callbacks will configure everything for this compress
342 * path, like configuring a PCM port for a CODEC.
343 */
344 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
345 if (ret < 0)
346 goto err;
347
348 ret = snd_soc_component_compr_set_params(cstream, params);
349 if (ret < 0)
350 goto err;
351
352 ret = snd_soc_link_compr_set_params(cstream);
353 if (ret < 0)
354 goto err;
355
356 snd_soc_dapm_stream_event(rtd, stream, SND_SOC_DAPM_STREAM_START);
357
358 /* cancel any delayed stream shutdown that is pending */
359 rtd->pop_wait = 0;
360 mutex_unlock(&rtd->card->pcm_mutex);
361
362 cancel_delayed_work_sync(&rtd->delayed_work);
363
364 return 0;
365
366err:
367 mutex_unlock(&rtd->card->pcm_mutex);
368 return ret;
369}
370
371static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
372 struct snd_compr_params *params)
373{
374 struct snd_soc_pcm_runtime *fe = cstream->private_data;
375 struct snd_pcm_substream *fe_substream =
376 fe->pcm->streams[cstream->direction].substream;
377 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
378 int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
379 int ret;
380
381 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
382
383 /*
384 * Create an empty hw_params for the BE as the machine driver must
385 * fix this up to match DSP decoder and ASRC configuration.
386 * I.e. machine driver fixup for compressed BE is mandatory.
387 */
388 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
389 sizeof(struct snd_pcm_hw_params));
390
391 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
392
393 ret = dpcm_be_dai_hw_params(fe, stream);
394 if (ret < 0)
395 goto out;
396
397 ret = dpcm_be_dai_prepare(fe, stream);
398 if (ret < 0)
399 goto out;
400
401 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
402 if (ret < 0)
403 goto out;
404
405 ret = snd_soc_component_compr_set_params(cstream, params);
406 if (ret < 0)
407 goto out;
408
409 ret = snd_soc_link_compr_set_params(cstream);
410 if (ret < 0)
411 goto out;
412
413 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
414 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
415
416out:
417 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
418 mutex_unlock(&fe->card->mutex);
419 return ret;
420}
421
422static int soc_compr_get_params(struct snd_compr_stream *cstream,
423 struct snd_codec *params)
424{
425 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
426 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
427 int ret = 0;
428
429 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
430
431 ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params);
432 if (ret < 0)
433 goto err;
434
435 ret = snd_soc_component_compr_get_params(cstream, params);
436err:
437 mutex_unlock(&rtd->card->pcm_mutex);
438 return ret;
439}
440
441static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
442{
443 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
444 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
445 int ret;
446
447 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
448
449 ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes);
450 if (ret < 0)
451 goto err;
452
453 ret = snd_soc_component_compr_ack(cstream, bytes);
454err:
455 mutex_unlock(&rtd->card->pcm_mutex);
456 return ret;
457}
458
459static int soc_compr_pointer(struct snd_compr_stream *cstream,
460 struct snd_compr_tstamp *tstamp)
461{
462 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
463 int ret;
464 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
465
466 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
467
468 ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp);
469 if (ret < 0)
470 goto out;
471
472 ret = snd_soc_component_compr_pointer(cstream, tstamp);
473out:
474 mutex_unlock(&rtd->card->pcm_mutex);
475 return ret;
476}
477
478static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
479 struct snd_compr_metadata *metadata)
480{
481 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
482 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
483 int ret;
484
485 ret = snd_soc_dai_compr_set_metadata(cpu_dai, cstream, metadata);
486 if (ret < 0)
487 return ret;
488
489 return snd_soc_component_compr_set_metadata(cstream, metadata);
490}
491
492static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
493 struct snd_compr_metadata *metadata)
494{
495 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
496 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
497 int ret;
498
499 ret = snd_soc_dai_compr_get_metadata(cpu_dai, cstream, metadata);
500 if (ret < 0)
501 return ret;
502
503 return snd_soc_component_compr_get_metadata(cstream, metadata);
504}
505
506/* ASoC Compress operations */
507static struct snd_compr_ops soc_compr_ops = {
508 .open = soc_compr_open,
509 .free = soc_compr_free,
510 .set_params = soc_compr_set_params,
511 .set_metadata = soc_compr_set_metadata,
512 .get_metadata = soc_compr_get_metadata,
513 .get_params = soc_compr_get_params,
514 .trigger = soc_compr_trigger,
515 .pointer = soc_compr_pointer,
516 .ack = soc_compr_ack,
517 .get_caps = snd_soc_component_compr_get_caps,
518 .get_codec_caps = snd_soc_component_compr_get_codec_caps,
519};
520
521/* ASoC Dynamic Compress operations */
522static struct snd_compr_ops soc_compr_dyn_ops = {
523 .open = soc_compr_open_fe,
524 .free = soc_compr_free_fe,
525 .set_params = soc_compr_set_params_fe,
526 .get_params = soc_compr_get_params,
527 .set_metadata = soc_compr_set_metadata,
528 .get_metadata = soc_compr_get_metadata,
529 .trigger = soc_compr_trigger_fe,
530 .pointer = soc_compr_pointer,
531 .ack = soc_compr_ack,
532 .get_caps = snd_soc_component_compr_get_caps,
533 .get_codec_caps = snd_soc_component_compr_get_codec_caps,
534};
535
536/**
537 * snd_soc_new_compress - create a new compress.
538 *
539 * @rtd: The runtime for which we will create compress
540 * @num: the device index number (zero based - shared with normal PCMs)
541 *
542 * Return: 0 for success, else error.
543 */
544int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
545{
546 struct snd_soc_component *component;
547 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
548 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
549 struct snd_compr *compr;
550 struct snd_pcm *be_pcm;
551 char new_name[64];
552 int ret = 0, direction = 0;
553 int playback = 0, capture = 0;
554 int i;
555
556 /*
557 * make sure these are same value,
558 * and then use these as equally
559 */
560 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_PLAYBACK != (int)SND_COMPRESS_PLAYBACK);
561 BUILD_BUG_ON((int)SNDRV_PCM_STREAM_CAPTURE != (int)SND_COMPRESS_CAPTURE);
562
563 if (rtd->dai_link->num_cpus > 1 ||
564 rtd->dai_link->num_codecs > 1) {
565 dev_err(rtd->card->dev,
566 "Compress ASoC: Multi CPU/Codec not supported\n");
567 return -EINVAL;
568 }
569
570 if (!codec_dai) {
571 dev_err(rtd->card->dev, "Missing codec\n");
572 return -EINVAL;
573 }
574
575 /* check client and interface hw capabilities */
576 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
577 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
578 playback = 1;
579 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
580 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
581 capture = 1;
582
583 /*
584 * Compress devices are unidirectional so only one of the directions
585 * should be set, check for that (xor)
586 */
587 if (playback + capture != 1) {
588 dev_err(rtd->card->dev,
589 "Compress ASoC: Invalid direction for P %d, C %d\n",
590 playback, capture);
591 return -EINVAL;
592 }
593
594 if (playback)
595 direction = SND_COMPRESS_PLAYBACK;
596 else
597 direction = SND_COMPRESS_CAPTURE;
598
599 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
600 if (!compr)
601 return -ENOMEM;
602
603 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
604 GFP_KERNEL);
605 if (!compr->ops)
606 return -ENOMEM;
607
608 if (rtd->dai_link->dynamic) {
609 snprintf(new_name, sizeof(new_name), "(%s)",
610 rtd->dai_link->stream_name);
611
612 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
613 rtd->dai_link->dpcm_playback,
614 rtd->dai_link->dpcm_capture, &be_pcm);
615 if (ret < 0) {
616 dev_err(rtd->card->dev,
617 "Compress ASoC: can't create compressed for %s: %d\n",
618 rtd->dai_link->name, ret);
619 return ret;
620 }
621
622 rtd->pcm = be_pcm;
623 rtd->fe_compr = 1;
624 if (rtd->dai_link->dpcm_playback)
625 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
626 else if (rtd->dai_link->dpcm_capture)
627 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
628 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
629 } else {
630 snprintf(new_name, sizeof(new_name), "%s %s-%d",
631 rtd->dai_link->stream_name, codec_dai->name, num);
632
633 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
634 }
635
636 for_each_rtd_components(rtd, i, component) {
637 if (!component->driver->compress_ops ||
638 !component->driver->compress_ops->copy)
639 continue;
640
641 compr->ops->copy = snd_soc_component_compr_copy;
642 break;
643 }
644
645 ret = snd_compress_new(rtd->card->snd_card, num, direction,
646 new_name, compr);
647 if (ret < 0) {
648 component = asoc_rtd_to_codec(rtd, 0)->component;
649 dev_err(component->dev,
650 "Compress ASoC: can't create compress for codec %s: %d\n",
651 component->name, ret);
652 return ret;
653 }
654
655 /* DAPM dai link stream work */
656 rtd->close_delayed_work_func = snd_soc_close_delayed_work;
657
658 rtd->compr = compr;
659 compr->private_data = rtd;
660
661 dev_dbg(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
662 codec_dai->name, cpu_dai->name);
663
664 return 0;
665}
666EXPORT_SYMBOL_GPL(snd_soc_new_compress);
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
25static int soc_compr_components_open(struct snd_compr_stream *cstream,
26 struct snd_soc_component **last)
27{
28 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
29 struct snd_soc_component *component;
30 int i, ret;
31
32 for_each_rtd_components(rtd, i, component) {
33 if (!component->driver->compress_ops ||
34 !component->driver->compress_ops->open)
35 continue;
36
37 ret = component->driver->compress_ops->open(component, cstream);
38 if (ret < 0) {
39 dev_err(component->dev,
40 "Compress ASoC: can't open platform %s: %d\n",
41 component->name, ret);
42
43 *last = component;
44 return ret;
45 }
46 }
47
48 *last = NULL;
49 return 0;
50}
51
52static int soc_compr_components_free(struct snd_compr_stream *cstream,
53 struct snd_soc_component *last)
54{
55 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
56 struct snd_soc_component *component;
57 int i;
58
59 for_each_rtd_components(rtd, i, component) {
60 if (component == last)
61 break;
62
63 if (!component->driver->compress_ops ||
64 !component->driver->compress_ops->free)
65 continue;
66
67 component->driver->compress_ops->free(component, cstream);
68 }
69
70 return 0;
71}
72
73static int soc_compr_open(struct snd_compr_stream *cstream)
74{
75 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
76 struct snd_soc_component *component = NULL, *save = NULL;
77 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
78 int ret, i;
79
80 for_each_rtd_components(rtd, i, component) {
81 ret = pm_runtime_get_sync(component->dev);
82 if (ret < 0 && ret != -EACCES) {
83 pm_runtime_put_noidle(component->dev);
84 save = component;
85 goto pm_err;
86 }
87 }
88
89 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
90
91 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
92 if (ret < 0)
93 goto out;
94
95 ret = soc_compr_components_open(cstream, &component);
96 if (ret < 0)
97 goto machine_err;
98
99 ret = snd_soc_link_compr_startup(cstream);
100 if (ret < 0)
101 goto machine_err;
102
103 snd_soc_runtime_activate(rtd, cstream->direction);
104
105 mutex_unlock(&rtd->card->pcm_mutex);
106
107 return 0;
108
109machine_err:
110 soc_compr_components_free(cstream, component);
111
112 snd_soc_dai_compr_shutdown(cpu_dai, cstream);
113out:
114 mutex_unlock(&rtd->card->pcm_mutex);
115pm_err:
116 for_each_rtd_components(rtd, i, component) {
117 if (component == save)
118 break;
119 pm_runtime_mark_last_busy(component->dev);
120 pm_runtime_put_autosuspend(component->dev);
121 }
122
123 return ret;
124}
125
126static int soc_compr_open_fe(struct snd_compr_stream *cstream)
127{
128 struct snd_soc_pcm_runtime *fe = cstream->private_data;
129 struct snd_pcm_substream *fe_substream =
130 fe->pcm->streams[cstream->direction].substream;
131 struct snd_soc_component *component;
132 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
133 struct snd_soc_dpcm *dpcm;
134 struct snd_soc_dapm_widget_list *list;
135 int stream;
136 int ret;
137
138 if (cstream->direction == SND_COMPRESS_PLAYBACK)
139 stream = SNDRV_PCM_STREAM_PLAYBACK;
140 else
141 stream = SNDRV_PCM_STREAM_CAPTURE;
142
143 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
144 fe->dpcm[stream].runtime = fe_substream->runtime;
145
146 ret = dpcm_path_get(fe, stream, &list);
147 if (ret < 0)
148 goto be_err;
149 else if (ret == 0)
150 dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n",
151 fe->dai_link->name, stream ? "capture" : "playback");
152 /* calculate valid and active FE <-> BE dpcms */
153 dpcm_process_paths(fe, stream, &list, 1);
154 fe->dpcm[stream].runtime = fe_substream->runtime;
155
156 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
157
158 ret = dpcm_be_dai_startup(fe, stream);
159 if (ret < 0) {
160 /* clean up all links */
161 for_each_dpcm_be(fe, stream, dpcm)
162 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
163
164 dpcm_be_disconnect(fe, stream);
165 fe->dpcm[stream].runtime = NULL;
166 goto out;
167 }
168
169 ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
170 if (ret < 0)
171 goto out;
172
173 ret = soc_compr_components_open(cstream, &component);
174 if (ret < 0)
175 goto open_err;
176
177 ret = snd_soc_link_compr_startup(cstream);
178 if (ret < 0)
179 goto machine_err;
180
181 dpcm_clear_pending_state(fe, stream);
182 dpcm_path_put(&list);
183
184 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
185 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
186
187 snd_soc_runtime_activate(fe, stream);
188
189 mutex_unlock(&fe->card->mutex);
190
191 return 0;
192
193machine_err:
194 soc_compr_components_free(cstream, component);
195open_err:
196 snd_soc_dai_compr_shutdown(cpu_dai, cstream);
197out:
198 dpcm_path_put(&list);
199be_err:
200 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
201 mutex_unlock(&fe->card->mutex);
202 return ret;
203}
204
205static int soc_compr_free(struct snd_compr_stream *cstream)
206{
207 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
208 struct snd_soc_component *component;
209 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
210 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
211 int stream, i;
212
213 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
214
215 if (cstream->direction == SND_COMPRESS_PLAYBACK)
216 stream = SNDRV_PCM_STREAM_PLAYBACK;
217 else
218 stream = SNDRV_PCM_STREAM_CAPTURE;
219
220 snd_soc_runtime_deactivate(rtd, stream);
221
222 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
223
224 if (!snd_soc_dai_active(cpu_dai))
225 cpu_dai->rate = 0;
226
227 if (!snd_soc_dai_active(codec_dai))
228 codec_dai->rate = 0;
229
230 snd_soc_link_compr_shutdown(cstream);
231
232 soc_compr_components_free(cstream, NULL);
233
234 snd_soc_dai_compr_shutdown(cpu_dai, cstream);
235
236 snd_soc_dapm_stream_stop(rtd, stream);
237
238 mutex_unlock(&rtd->card->pcm_mutex);
239
240 for_each_rtd_components(rtd, i, component) {
241 pm_runtime_mark_last_busy(component->dev);
242 pm_runtime_put_autosuspend(component->dev);
243 }
244
245 return 0;
246}
247
248static int soc_compr_free_fe(struct snd_compr_stream *cstream)
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 struct snd_soc_dpcm *dpcm;
253 int stream, ret;
254
255 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
256
257 if (cstream->direction == SND_COMPRESS_PLAYBACK)
258 stream = SNDRV_PCM_STREAM_PLAYBACK;
259 else
260 stream = SNDRV_PCM_STREAM_CAPTURE;
261
262 snd_soc_runtime_deactivate(fe, stream);
263
264 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
265
266 ret = dpcm_be_dai_hw_free(fe, stream);
267 if (ret < 0)
268 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);
269
270 ret = dpcm_be_dai_shutdown(fe, stream);
271
272 /* mark FE's links ready to prune */
273 for_each_dpcm_be(fe, stream, dpcm)
274 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
275
276 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
277
278 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
279 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
280
281 dpcm_be_disconnect(fe, stream);
282
283 fe->dpcm[stream].runtime = NULL;
284
285 snd_soc_link_compr_shutdown(cstream);
286
287 soc_compr_components_free(cstream, NULL);
288
289 snd_soc_dai_compr_shutdown(cpu_dai, cstream);
290
291 mutex_unlock(&fe->card->mutex);
292 return 0;
293}
294
295static int soc_compr_components_trigger(struct snd_compr_stream *cstream,
296 int cmd)
297{
298 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
299 struct snd_soc_component *component;
300 int i, ret;
301
302 for_each_rtd_components(rtd, i, component) {
303 if (!component->driver->compress_ops ||
304 !component->driver->compress_ops->trigger)
305 continue;
306
307 ret = component->driver->compress_ops->trigger(
308 component, cstream, cmd);
309 if (ret < 0)
310 return ret;
311 }
312
313 return 0;
314}
315
316static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
317{
318 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
319 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
320 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
321 int ret;
322
323 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
324
325 ret = soc_compr_components_trigger(cstream, cmd);
326 if (ret < 0)
327 goto out;
328
329 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
330 if (ret < 0)
331 goto out;
332
333 switch (cmd) {
334 case SNDRV_PCM_TRIGGER_START:
335 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
336 break;
337 case SNDRV_PCM_TRIGGER_STOP:
338 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
339 break;
340 }
341
342out:
343 mutex_unlock(&rtd->card->pcm_mutex);
344 return ret;
345}
346
347static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
348{
349 struct snd_soc_pcm_runtime *fe = cstream->private_data;
350 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
351 int ret, stream;
352
353 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
354 cmd == SND_COMPR_TRIGGER_DRAIN)
355 return soc_compr_components_trigger(cstream, cmd);
356
357 if (cstream->direction == SND_COMPRESS_PLAYBACK)
358 stream = SNDRV_PCM_STREAM_PLAYBACK;
359 else
360 stream = SNDRV_PCM_STREAM_CAPTURE;
361
362 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
363
364 ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
365 if (ret < 0)
366 goto out;
367
368 ret = soc_compr_components_trigger(cstream, cmd);
369 if (ret < 0)
370 goto out;
371
372 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
373
374 ret = dpcm_be_dai_trigger(fe, stream, cmd);
375
376 switch (cmd) {
377 case SNDRV_PCM_TRIGGER_START:
378 case SNDRV_PCM_TRIGGER_RESUME:
379 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
380 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
381 break;
382 case SNDRV_PCM_TRIGGER_STOP:
383 case SNDRV_PCM_TRIGGER_SUSPEND:
384 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
385 break;
386 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
387 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
388 break;
389 }
390
391out:
392 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
393 mutex_unlock(&fe->card->mutex);
394 return ret;
395}
396
397static int soc_compr_components_set_params(struct snd_compr_stream *cstream,
398 struct snd_compr_params *params)
399{
400 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
401 struct snd_soc_component *component;
402 int i, ret;
403
404 for_each_rtd_components(rtd, i, component) {
405 if (!component->driver->compress_ops ||
406 !component->driver->compress_ops->set_params)
407 continue;
408
409 ret = component->driver->compress_ops->set_params(
410 component, cstream, params);
411 if (ret < 0)
412 return ret;
413 }
414
415 return 0;
416}
417
418static int soc_compr_set_params(struct snd_compr_stream *cstream,
419 struct snd_compr_params *params)
420{
421 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
422 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
423 int ret;
424
425 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
426
427 /*
428 * First we call set_params for the CPU DAI, then the component
429 * driver this should configure the SoC side. If the machine has
430 * compressed ops then we call that as well. The expectation is
431 * that these callbacks will configure everything for this compress
432 * path, like configuring a PCM port for a CODEC.
433 */
434 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
435 if (ret < 0)
436 goto err;
437
438 ret = soc_compr_components_set_params(cstream, params);
439 if (ret < 0)
440 goto err;
441
442 ret = snd_soc_link_compr_set_params(cstream);
443 if (ret < 0)
444 goto err;
445
446 if (cstream->direction == SND_COMPRESS_PLAYBACK)
447 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
448 SND_SOC_DAPM_STREAM_START);
449 else
450 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
451 SND_SOC_DAPM_STREAM_START);
452
453 /* cancel any delayed stream shutdown that is pending */
454 rtd->pop_wait = 0;
455 mutex_unlock(&rtd->card->pcm_mutex);
456
457 cancel_delayed_work_sync(&rtd->delayed_work);
458
459 return 0;
460
461err:
462 mutex_unlock(&rtd->card->pcm_mutex);
463 return ret;
464}
465
466static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
467 struct snd_compr_params *params)
468{
469 struct snd_soc_pcm_runtime *fe = cstream->private_data;
470 struct snd_pcm_substream *fe_substream =
471 fe->pcm->streams[cstream->direction].substream;
472 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
473 int ret, stream;
474
475 if (cstream->direction == SND_COMPRESS_PLAYBACK)
476 stream = SNDRV_PCM_STREAM_PLAYBACK;
477 else
478 stream = SNDRV_PCM_STREAM_CAPTURE;
479
480 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
481
482 /*
483 * Create an empty hw_params for the BE as the machine driver must
484 * fix this up to match DSP decoder and ASRC configuration.
485 * I.e. machine driver fixup for compressed BE is mandatory.
486 */
487 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
488 sizeof(struct snd_pcm_hw_params));
489
490 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
491
492 ret = dpcm_be_dai_hw_params(fe, stream);
493 if (ret < 0)
494 goto out;
495
496 ret = dpcm_be_dai_prepare(fe, stream);
497 if (ret < 0)
498 goto out;
499
500 ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
501 if (ret < 0)
502 goto out;
503
504 ret = soc_compr_components_set_params(cstream, params);
505 if (ret < 0)
506 goto out;
507
508 ret = snd_soc_link_compr_set_params(cstream);
509 if (ret < 0)
510 goto out;
511
512 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
513 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
514
515out:
516 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
517 mutex_unlock(&fe->card->mutex);
518 return ret;
519}
520
521static int soc_compr_get_params(struct snd_compr_stream *cstream,
522 struct snd_codec *params)
523{
524 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
525 struct snd_soc_component *component;
526 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
527 int i, ret = 0;
528
529 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
530
531 ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params);
532 if (ret < 0)
533 goto err;
534
535 for_each_rtd_components(rtd, i, component) {
536 if (!component->driver->compress_ops ||
537 !component->driver->compress_ops->get_params)
538 continue;
539
540 ret = component->driver->compress_ops->get_params(
541 component, cstream, params);
542 break;
543 }
544
545err:
546 mutex_unlock(&rtd->card->pcm_mutex);
547 return ret;
548}
549
550static int soc_compr_get_caps(struct snd_compr_stream *cstream,
551 struct snd_compr_caps *caps)
552{
553 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
554 struct snd_soc_component *component;
555 int i, ret = 0;
556
557 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
558
559 for_each_rtd_components(rtd, i, component) {
560 if (!component->driver->compress_ops ||
561 !component->driver->compress_ops->get_caps)
562 continue;
563
564 ret = component->driver->compress_ops->get_caps(
565 component, cstream, caps);
566 break;
567 }
568
569 mutex_unlock(&rtd->card->pcm_mutex);
570 return ret;
571}
572
573static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
574 struct snd_compr_codec_caps *codec)
575{
576 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
577 struct snd_soc_component *component;
578 int i, ret = 0;
579
580 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
581
582 for_each_rtd_components(rtd, i, component) {
583 if (!component->driver->compress_ops ||
584 !component->driver->compress_ops->get_codec_caps)
585 continue;
586
587 ret = component->driver->compress_ops->get_codec_caps(
588 component, cstream, codec);
589 break;
590 }
591
592 mutex_unlock(&rtd->card->pcm_mutex);
593 return ret;
594}
595
596static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
597{
598 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
599 struct snd_soc_component *component;
600 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
601 int i, ret = 0;
602
603 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
604
605 ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes);
606 if (ret < 0)
607 goto err;
608
609 for_each_rtd_components(rtd, i, component) {
610 if (!component->driver->compress_ops ||
611 !component->driver->compress_ops->ack)
612 continue;
613
614 ret = component->driver->compress_ops->ack(
615 component, cstream, bytes);
616 if (ret < 0)
617 goto err;
618 }
619
620err:
621 mutex_unlock(&rtd->card->pcm_mutex);
622 return ret;
623}
624
625static int soc_compr_pointer(struct snd_compr_stream *cstream,
626 struct snd_compr_tstamp *tstamp)
627{
628 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
629 struct snd_soc_component *component;
630 int i, ret = 0;
631 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
632
633 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
634
635 ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp);
636 if (ret < 0)
637 goto out;
638
639 for_each_rtd_components(rtd, i, component) {
640 if (!component->driver->compress_ops ||
641 !component->driver->compress_ops->pointer)
642 continue;
643
644 ret = component->driver->compress_ops->pointer(
645 component, cstream, tstamp);
646 break;
647 }
648out:
649 mutex_unlock(&rtd->card->pcm_mutex);
650 return ret;
651}
652
653static int soc_compr_copy(struct snd_compr_stream *cstream,
654 char __user *buf, size_t count)
655{
656 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
657 struct snd_soc_component *component;
658 int i, ret = 0;
659
660 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
661
662 for_each_rtd_components(rtd, i, component) {
663 if (!component->driver->compress_ops ||
664 !component->driver->compress_ops->copy)
665 continue;
666
667 ret = component->driver->compress_ops->copy(
668 component, cstream, buf, count);
669 break;
670 }
671
672 mutex_unlock(&rtd->card->pcm_mutex);
673 return ret;
674}
675
676static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
677 struct snd_compr_metadata *metadata)
678{
679 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
680 struct snd_soc_component *component;
681 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
682 int i, ret;
683
684 ret = snd_soc_dai_compr_set_metadata(cpu_dai, cstream, metadata);
685 if (ret < 0)
686 return ret;
687
688 for_each_rtd_components(rtd, i, component) {
689 if (!component->driver->compress_ops ||
690 !component->driver->compress_ops->set_metadata)
691 continue;
692
693 ret = component->driver->compress_ops->set_metadata(
694 component, cstream, metadata);
695 if (ret < 0)
696 return ret;
697 }
698
699 return 0;
700}
701
702static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
703 struct snd_compr_metadata *metadata)
704{
705 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
706 struct snd_soc_component *component;
707 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
708 int i, ret;
709
710 ret = snd_soc_dai_compr_get_metadata(cpu_dai, cstream, metadata);
711 if (ret < 0)
712 return ret;
713
714 for_each_rtd_components(rtd, i, component) {
715 if (!component->driver->compress_ops ||
716 !component->driver->compress_ops->get_metadata)
717 continue;
718
719 return component->driver->compress_ops->get_metadata(
720 component, cstream, metadata);
721 }
722
723 return 0;
724}
725
726/* ASoC Compress operations */
727static struct snd_compr_ops soc_compr_ops = {
728 .open = soc_compr_open,
729 .free = soc_compr_free,
730 .set_params = soc_compr_set_params,
731 .set_metadata = soc_compr_set_metadata,
732 .get_metadata = soc_compr_get_metadata,
733 .get_params = soc_compr_get_params,
734 .trigger = soc_compr_trigger,
735 .pointer = soc_compr_pointer,
736 .ack = soc_compr_ack,
737 .get_caps = soc_compr_get_caps,
738 .get_codec_caps = soc_compr_get_codec_caps
739};
740
741/* ASoC Dynamic Compress operations */
742static struct snd_compr_ops soc_compr_dyn_ops = {
743 .open = soc_compr_open_fe,
744 .free = soc_compr_free_fe,
745 .set_params = soc_compr_set_params_fe,
746 .get_params = soc_compr_get_params,
747 .set_metadata = soc_compr_set_metadata,
748 .get_metadata = soc_compr_get_metadata,
749 .trigger = soc_compr_trigger_fe,
750 .pointer = soc_compr_pointer,
751 .ack = soc_compr_ack,
752 .get_caps = soc_compr_get_caps,
753 .get_codec_caps = soc_compr_get_codec_caps
754};
755
756/**
757 * snd_soc_new_compress - create a new compress.
758 *
759 * @rtd: The runtime for which we will create compress
760 * @num: the device index number (zero based - shared with normal PCMs)
761 *
762 * Return: 0 for success, else error.
763 */
764int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
765{
766 struct snd_soc_component *component;
767 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
768 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
769 struct snd_compr *compr;
770 struct snd_pcm *be_pcm;
771 char new_name[64];
772 int ret = 0, direction = 0;
773 int playback = 0, capture = 0;
774 int i;
775
776 if (rtd->num_cpus > 1 ||
777 rtd->num_codecs > 1) {
778 dev_err(rtd->card->dev,
779 "Compress ASoC: Multi CPU/Codec not supported\n");
780 return -EINVAL;
781 }
782
783 /* check client and interface hw capabilities */
784 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
785 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
786 playback = 1;
787 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
788 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
789 capture = 1;
790
791 /*
792 * Compress devices are unidirectional so only one of the directions
793 * should be set, check for that (xor)
794 */
795 if (playback + capture != 1) {
796 dev_err(rtd->card->dev,
797 "Compress ASoC: Invalid direction for P %d, C %d\n",
798 playback, capture);
799 return -EINVAL;
800 }
801
802 if (playback)
803 direction = SND_COMPRESS_PLAYBACK;
804 else
805 direction = SND_COMPRESS_CAPTURE;
806
807 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
808 if (!compr)
809 return -ENOMEM;
810
811 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
812 GFP_KERNEL);
813 if (!compr->ops)
814 return -ENOMEM;
815
816 if (rtd->dai_link->dynamic) {
817 snprintf(new_name, sizeof(new_name), "(%s)",
818 rtd->dai_link->stream_name);
819
820 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
821 rtd->dai_link->dpcm_playback,
822 rtd->dai_link->dpcm_capture, &be_pcm);
823 if (ret < 0) {
824 dev_err(rtd->card->dev,
825 "Compress ASoC: can't create compressed for %s: %d\n",
826 rtd->dai_link->name, ret);
827 return ret;
828 }
829
830 rtd->pcm = be_pcm;
831 rtd->fe_compr = 1;
832 if (rtd->dai_link->dpcm_playback)
833 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
834 else if (rtd->dai_link->dpcm_capture)
835 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
836 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
837 } else {
838 snprintf(new_name, sizeof(new_name), "%s %s-%d",
839 rtd->dai_link->stream_name, codec_dai->name, num);
840
841 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
842 }
843
844 for_each_rtd_components(rtd, i, component) {
845 if (!component->driver->compress_ops ||
846 !component->driver->compress_ops->copy)
847 continue;
848
849 compr->ops->copy = soc_compr_copy;
850 break;
851 }
852
853 mutex_init(&compr->lock);
854 ret = snd_compress_new(rtd->card->snd_card, num, direction,
855 new_name, compr);
856 if (ret < 0) {
857 component = asoc_rtd_to_codec(rtd, 0)->component;
858 dev_err(component->dev,
859 "Compress ASoC: can't create compress for codec %s: %d\n",
860 component->name, ret);
861 return ret;
862 }
863
864 /* DAPM dai link stream work */
865 rtd->close_delayed_work_func = snd_soc_close_delayed_work;
866
867 rtd->compr = compr;
868 compr->private_data = rtd;
869
870 dev_dbg(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
871 codec_dai->name, cpu_dai->name);
872
873 return 0;
874}
875EXPORT_SYMBOL_GPL(snd_soc_new_compress);