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ASoC: Intel: Fix some acpi vs apci typo in somme comments
[linux-2.6-block.git] / sound / soc / soc-compress.c
CommitLineData
b3ed4c86
KM		 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>
1245b700
NK		 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>
2a99ef0f 21#include <sound/soc-dpcm.h>
1245b700 22
1e57b828
CK		 23static int soc_compr_components_open(struct snd_compr_stream *cstream,
24 struct snd_soc_component **last)
1245b700
NK		 25{
26 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 27 struct snd_soc_component *component;
28 struct snd_soc_rtdcom_list *rtdcom;
572e6c8d 29 int ret;
1245b700 30
9e7e3738
KM		 31 for_each_rtdcom(rtd, rtdcom) {
32 component = rtdcom->component;
33
9e7e3738
KM		 34 if (!component->driver->compr_ops ||
35 !component->driver->compr_ops->open)
36 continue;
37
572e6c8d
CK		 38 ret = component->driver->compr_ops->open(cstream);
39 if (ret < 0) {
141dfc9e
CK		 40 dev_err(component->dev,
41 "Compress ASoC: can't open platform %s: %d\n",
572e6c8d 42 component->name, ret);
1e57b828
CK		 43
44 *last = component;
45 return ret;
46 }
47 }
48
49 *last = NULL;
50 return 0;
51}
52
53static int soc_compr_components_free(struct snd_compr_stream *cstream,
54 struct snd_soc_component *last)
55{
56 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
57 struct snd_soc_component *component;
58 struct snd_soc_rtdcom_list *rtdcom;
59
60 for_each_rtdcom(rtd, rtdcom) {
61 component = rtdcom->component;
62
63 if (component == last)
64 break;
65
66 if (!component->driver->compr_ops ||
67 !component->driver->compr_ops->free)
68 continue;
69
70 component->driver->compr_ops->free(cstream);
71 }
72
73 return 0;
74}
75
76static int soc_compr_open(struct snd_compr_stream *cstream)
77{
78 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
79 struct snd_soc_component *component;
80 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
81 int ret;
82
83 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
84
85 if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
86 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
87 if (ret < 0) {
88 dev_err(cpu_dai->dev,
89 "Compress ASoC: can't open interface %s: %d\n",
90 cpu_dai->name, ret);
91 goto out;
9e7e3738
KM		 92 }
93 }
1e57b828
CK		 94
95 ret = soc_compr_components_open(cstream, &component);
96 if (ret < 0)
97 goto machine_err;
9e7e3738 98
1245b700
NK		 99 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
100 ret = rtd->dai_link->compr_ops->startup(cstream);
101 if (ret < 0) {
141dfc9e
CK		 102 dev_err(rtd->dev,
103 "Compress ASoC: %s startup failed: %d\n",
104 rtd->dai_link->name, ret);
1245b700
NK		 105 goto machine_err;
106 }
107 }
108
24894b76 109 snd_soc_runtime_activate(rtd, cstream->direction);
1245b700 110
15e2e619
CK		 111 mutex_unlock(&rtd->pcm_mutex);
112
1245b700
NK		 113 return 0;
114
115machine_err:
1e57b828 116 soc_compr_components_free(cstream, component);
9e7e3738 117
2e622ae4
VK		 118 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
119 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
1245b700 120out:
15e2e619 121 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 122 return ret;
123}
124
2a99ef0f
LG		 125static int soc_compr_open_fe(struct snd_compr_stream *cstream)
126{
127 struct snd_soc_pcm_runtime *fe = cstream->private_data;
01b8cedf
SBP		 128 struct snd_pcm_substream *fe_substream =
129 fe->pcm->streams[cstream->direction].substream;
9e7e3738 130 struct snd_soc_component *component;
2e622ae4 131 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
2a99ef0f
LG		 132 struct snd_soc_dpcm *dpcm;
133 struct snd_soc_dapm_widget_list *list;
134 int stream;
572e6c8d 135 int ret;
2a99ef0f
LG		 136
137 if (cstream->direction == SND_COMPRESS_PLAYBACK)
138 stream = SNDRV_PCM_STREAM_PLAYBACK;
139 else
140 stream = SNDRV_PCM_STREAM_CAPTURE;
141
142 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
0b0722e1
SK		 143 fe->dpcm[stream].runtime = fe_substream->runtime;
144
145 ret = dpcm_path_get(fe, stream, &list);
146 if (ret < 0)
147 goto be_err;
148 else if (ret == 0)
149 dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n",
150 fe->dai_link->name, stream ? "capture" : "playback");
151 /* calculate valid and active FE <-> BE dpcms */
152 dpcm_process_paths(fe, stream, &list, 1);
153 fe->dpcm[stream].runtime = fe_substream->runtime;
154
155 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
156
157 ret = dpcm_be_dai_startup(fe, stream);
158 if (ret < 0) {
159 /* clean up all links */
8d6258a4 160 for_each_dpcm_be(fe, stream, dpcm)
0b0722e1
SK		 161 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
162
163 dpcm_be_disconnect(fe, stream);
164 fe->dpcm[stream].runtime = NULL;
165 goto out;
166 }
2a99ef0f 167
2e622ae4
VK		 168 if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
169 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
170 if (ret < 0) {
141dfc9e
CK		 171 dev_err(cpu_dai->dev,
172 "Compress ASoC: can't open interface %s: %d\n",
2e622ae4
VK		 173 cpu_dai->name, ret);
174 goto out;
175 }
176 }
177
1e57b828
CK		 178 ret = soc_compr_components_open(cstream, &component);
179 if (ret < 0)
0b0722e1 180 goto open_err;
9e7e3738 181
2a99ef0f
LG		 182 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
183 ret = fe->dai_link->compr_ops->startup(cstream);
184 if (ret < 0) {
141dfc9e
CK		 185 pr_err("Compress ASoC: %s startup failed: %d\n",
186 fe->dai_link->name, ret);
2a99ef0f
LG		 187 goto machine_err;
188 }
189 }
190
2a99ef0f
LG		 191 dpcm_clear_pending_state(fe, stream);
192 dpcm_path_put(&list);
193
194 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
195 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
196
24894b76 197 snd_soc_runtime_activate(fe, stream);
2a99ef0f
LG		 198
199 mutex_unlock(&fe->card->mutex);
200
201 return 0;
202
2a99ef0f 203machine_err:
1e57b828 204 soc_compr_components_free(cstream, component);
0b0722e1 205open_err:
2e622ae4
VK		 206 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
207 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
2a99ef0f 208out:
0b0722e1
SK		 209 dpcm_path_put(&list);
210be_err:
2a99ef0f
LG		 211 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
212 mutex_unlock(&fe->card->mutex);
213 return ret;
214}
215
202c8f70
CK		 216/*
217 * Power down the audio subsystem pmdown_time msecs after close is called.
218 * This is to ensure there are no pops or clicks in between any music tracks
219 * due to DAPM power cycling.
220 */
221static void close_delayed_work(struct work_struct *work)
222{
223 struct snd_soc_pcm_runtime *rtd =
224 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
225 struct snd_soc_dai *codec_dai = rtd->codec_dai;
226
227 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
228
141dfc9e
CK		 229 dev_dbg(rtd->dev,
230 "Compress ASoC: pop wq checking: %s status: %s waiting: %s\n",
231 codec_dai->driver->playback.stream_name,
232 codec_dai->playback_active ? "active" : "inactive",
233 rtd->pop_wait ? "yes" : "no");
202c8f70
CK		 234
235 /* are we waiting on this codec DAI stream */
236 if (rtd->pop_wait == 1) {
237 rtd->pop_wait = 0;
238 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
239 SND_SOC_DAPM_STREAM_STOP);
240 }
241
242 mutex_unlock(&rtd->pcm_mutex);
243}
244
1245b700
NK		 245static int soc_compr_free(struct snd_compr_stream *cstream)
246{
247 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
1245b700
NK		 248 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
249 struct snd_soc_dai *codec_dai = rtd->codec_dai;
24894b76 250 int stream;
1245b700 251
15e2e619
CK		 252 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
253
24894b76
LPC		 254 if (cstream->direction == SND_COMPRESS_PLAYBACK)
255 stream = SNDRV_PCM_STREAM_PLAYBACK;
256 else
257 stream = SNDRV_PCM_STREAM_CAPTURE;
1245b700 258
24894b76 259 snd_soc_runtime_deactivate(rtd, stream);
da18396f 260
24894b76 261 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
1245b700
NK		 262
263 if (!cpu_dai->active)
264 cpu_dai->rate = 0;
265
266 if (!codec_dai->active)
267 codec_dai->rate = 0;
268
1245b700
NK		 269 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
270 rtd->dai_link->compr_ops->shutdown(cstream);
271
1e57b828 272 soc_compr_components_free(cstream, NULL);
9e7e3738 273
2e622ae4
VK		 274 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
275 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
276
1245b700 277 if (cstream->direction == SND_COMPRESS_PLAYBACK) {
208a1589 278 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
1245b700 279 snd_soc_dapm_stream_event(rtd,
89027d9e
CK		 280 SNDRV_PCM_STREAM_PLAYBACK,
281 SND_SOC_DAPM_STREAM_STOP);
8c3d2aa4 282 } else {
9bffb1fb 283 rtd->pop_wait = 1;
3d24cfe4
MB		 284 queue_delayed_work(system_power_efficient_wq,
285 &rtd->delayed_work,
286 msecs_to_jiffies(rtd->pmdown_time));
8c3d2aa4 287 }
1245b700
NK		 288 } else {
289 /* capture streams can be powered down now */
290 snd_soc_dapm_stream_event(rtd,
89027d9e
CK		 291 SNDRV_PCM_STREAM_CAPTURE,
292 SND_SOC_DAPM_STREAM_STOP);
1245b700
NK		 293 }
294
15e2e619 295 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 296 return 0;
297}
298
2a99ef0f
LG		 299static int soc_compr_free_fe(struct snd_compr_stream *cstream)
300{
301 struct snd_soc_pcm_runtime *fe = cstream->private_data;
2e622ae4 302 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
2a99ef0f
LG		 303 struct snd_soc_dpcm *dpcm;
304 int stream, ret;
305
306 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
307
24894b76 308 if (cstream->direction == SND_COMPRESS_PLAYBACK)
2a99ef0f 309 stream = SNDRV_PCM_STREAM_PLAYBACK;
24894b76 310 else
2a99ef0f 311 stream = SNDRV_PCM_STREAM_CAPTURE;
2a99ef0f 312
24894b76 313 snd_soc_runtime_deactivate(fe, stream);
2a99ef0f
LG		 314
315 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
316
317 ret = dpcm_be_dai_hw_free(fe, stream);
318 if (ret < 0)
141dfc9e 319 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);
2a99ef0f
LG		 320
321 ret = dpcm_be_dai_shutdown(fe, stream);
322
323 /* mark FE's links ready to prune */
8d6258a4 324 for_each_dpcm_be(fe, stream, dpcm)
2a99ef0f
LG		 325 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
326
15f6b09a 327 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
2a99ef0f
LG		 328
329 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
330 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
331
332 dpcm_be_disconnect(fe, stream);
333
334 fe->dpcm[stream].runtime = NULL;
335
336 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
337 fe->dai_link->compr_ops->shutdown(cstream);
338
1e57b828 339 soc_compr_components_free(cstream, NULL);
9e7e3738 340
2e622ae4
VK		 341 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
342 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
343
2a99ef0f
LG		 344 mutex_unlock(&fe->card->mutex);
345 return 0;
346}
347
4ef0ecb8
CK		 348static int soc_compr_components_trigger(struct snd_compr_stream *cstream,
349 int cmd)
1245b700 350{
1245b700 351 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 352 struct snd_soc_component *component;
353 struct snd_soc_rtdcom_list *rtdcom;
4ef0ecb8 354 int ret;
15e2e619 355
9e7e3738
KM		 356 for_each_rtdcom(rtd, rtdcom) {
357 component = rtdcom->component;
358
9e7e3738
KM		 359 if (!component->driver->compr_ops ||
360 !component->driver->compr_ops->trigger)
361 continue;
362
52cadf1f
CK		 363 ret = component->driver->compr_ops->trigger(cstream, cmd);
364 if (ret < 0)
4ef0ecb8 365 return ret;
9e7e3738 366 }
9e7e3738 367
4ef0ecb8
CK		 368 return 0;
369}
370
371static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
372{
373 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
374 struct snd_soc_dai *codec_dai = rtd->codec_dai;
375 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
376 int ret;
377
378 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
379
380 ret = soc_compr_components_trigger(cstream, cmd);
381 if (ret < 0)
382 goto out;
383
2e622ae4
VK		 384 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
385 cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
386
da18396f
MB		 387 switch (cmd) {
388 case SNDRV_PCM_TRIGGER_START:
389 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
390 break;
391 case SNDRV_PCM_TRIGGER_STOP:
392 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
393 break;
e38b9b74 394 }
1245b700 395
15e2e619
CK		 396out:
397 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 398 return ret;
399}
400
2a99ef0f
LG		 401static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
402{
403 struct snd_soc_pcm_runtime *fe = cstream->private_data;
2e622ae4 404 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
52cadf1f 405 int ret, stream;
2a99ef0f
LG		 406
407 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
4ef0ecb8
CK		 408 cmd == SND_COMPR_TRIGGER_DRAIN)
409 return soc_compr_components_trigger(cstream, cmd);
2a99ef0f
LG		 410
411 if (cstream->direction == SND_COMPRESS_PLAYBACK)
412 stream = SNDRV_PCM_STREAM_PLAYBACK;
413 else
414 stream = SNDRV_PCM_STREAM_CAPTURE;
415
2a99ef0f
LG		 416 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
417
2e622ae4
VK		 418 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) {
419 ret = cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
420 if (ret < 0)
421 goto out;
422 }
423
4ef0ecb8
CK		 424 ret = soc_compr_components_trigger(cstream, cmd);
425 if (ret < 0)
426 goto out;
9e7e3738 427
2a99ef0f
LG		 428 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
429
430 ret = dpcm_be_dai_trigger(fe, stream, cmd);
431
432 switch (cmd) {
433 case SNDRV_PCM_TRIGGER_START:
434 case SNDRV_PCM_TRIGGER_RESUME:
435 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
436 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
437 break;
438 case SNDRV_PCM_TRIGGER_STOP:
439 case SNDRV_PCM_TRIGGER_SUSPEND:
440 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
441 break;
442 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
443 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
444 break;
445 }
446
447out:
448 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
449 mutex_unlock(&fe->card->mutex);
450 return ret;
451}
452
4ef0ecb8
CK		 453static int soc_compr_components_set_params(struct snd_compr_stream *cstream,
454 struct snd_compr_params *params)
1245b700
NK		 455{
456 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 457 struct snd_soc_component *component;
458 struct snd_soc_rtdcom_list *rtdcom;
4ef0ecb8
CK		 459 int ret;
460
461 for_each_rtdcom(rtd, rtdcom) {
462 component = rtdcom->component;
463
464 if (!component->driver->compr_ops ||
465 !component->driver->compr_ops->set_params)
466 continue;
467
468 ret = component->driver->compr_ops->set_params(cstream, params);
469 if (ret < 0)
470 return ret;
471 }
472
473 return 0;
474}
475
476static int soc_compr_set_params(struct snd_compr_stream *cstream,
477 struct snd_compr_params *params)
478{
479 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
2e622ae4 480 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
52cadf1f 481 int ret;
1245b700 482
15e2e619
CK		 483 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
484
ef050bec
CK		 485 /*
486 * First we call set_params for the CPU DAI, then the component
487 * driver this should configure the SoC side. If the machine has
488 * compressed ops then we call that as well. The expectation is
489 * that these callbacks will configure everything for this compress
490 * path, like configuring a PCM port for a CODEC.
1245b700 491 */
2e622ae4
VK		 492 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
493 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
494 if (ret < 0)
495 goto err;
496 }
497
4ef0ecb8
CK		 498 ret = soc_compr_components_set_params(cstream, params);
499 if (ret < 0)
500 goto err;
9e7e3738 501
1245b700
NK		 502 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
503 ret = rtd->dai_link->compr_ops->set_params(cstream);
504 if (ret < 0)
fa40ef20 505 goto err;
1245b700
NK		 506 }
507
2c071ed7
CK		 508 if (cstream->direction == SND_COMPRESS_PLAYBACK)
509 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
89027d9e 510 SND_SOC_DAPM_STREAM_START);
2c071ed7
CK		 511 else
512 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
89027d9e 513 SND_SOC_DAPM_STREAM_START);
1245b700 514
fa40ef20
CK		 515 /* cancel any delayed stream shutdown that is pending */
516 rtd->pop_wait = 0;
517 mutex_unlock(&rtd->pcm_mutex);
518
519 cancel_delayed_work_sync(&rtd->delayed_work);
520
52cadf1f 521 return 0;
fa40ef20
CK		 522
523err:
15e2e619 524 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 525 return ret;
526}
527
2a99ef0f 528static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
89027d9e 529 struct snd_compr_params *params)
2a99ef0f
LG		 530{
531 struct snd_soc_pcm_runtime *fe = cstream->private_data;
01b8cedf
SBP		 532 struct snd_pcm_substream *fe_substream =
533 fe->pcm->streams[cstream->direction].substream;
2e622ae4 534 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
52cadf1f 535 int ret, stream;
2a99ef0f
LG		 536
537 if (cstream->direction == SND_COMPRESS_PLAYBACK)
538 stream = SNDRV_PCM_STREAM_PLAYBACK;
539 else
540 stream = SNDRV_PCM_STREAM_CAPTURE;
541
542 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
543
0b0722e1
SK		 544 /*
545 * Create an empty hw_params for the BE as the machine driver must
546 * fix this up to match DSP decoder and ASRC configuration.
547 * I.e. machine driver fixup for compressed BE is mandatory.
548 */
549 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
550 sizeof(struct snd_pcm_hw_params));
551
552 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
553
554 ret = dpcm_be_dai_hw_params(fe, stream);
555 if (ret < 0)
556 goto out;
557
558 ret = dpcm_be_dai_prepare(fe, stream);
559 if (ret < 0)
560 goto out;
561
2e622ae4
VK		 562 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
563 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
564 if (ret < 0)
565 goto out;
566 }
567
4ef0ecb8
CK		 568 ret = soc_compr_components_set_params(cstream, params);
569 if (ret < 0)
570 goto out;
9e7e3738 571
2a99ef0f
LG		 572 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
573 ret = fe->dai_link->compr_ops->set_params(cstream);
574 if (ret < 0)
575 goto out;
576 }
577
15f6b09a 578 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2a99ef0f
LG		 579 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
580
581out:
582 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
583 mutex_unlock(&fe->card->mutex);
584 return ret;
585}
586
1245b700 587static int soc_compr_get_params(struct snd_compr_stream *cstream,
89027d9e 588 struct snd_codec *params)
1245b700
NK		 589{
590 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 591 struct snd_soc_component *component;
592 struct snd_soc_rtdcom_list *rtdcom;
2e622ae4 593 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
52cadf1f 594 int ret = 0;
1245b700 595
15e2e619
CK		 596 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
597
2e622ae4
VK		 598 if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) {
599 ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai);
600 if (ret < 0)
601 goto err;
602 }
603
9e7e3738
KM		 604 for_each_rtdcom(rtd, rtdcom) {
605 component = rtdcom->component;
606
9e7e3738
KM		 607 if (!component->driver->compr_ops ||
608 !component->driver->compr_ops->get_params)
609 continue;
610
52cadf1f
CK		 611 ret = component->driver->compr_ops->get_params(cstream, params);
612 break;
9e7e3738 613 }
1245b700 614
2e622ae4 615err:
15e2e619 616 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 617 return ret;
618}
619
620static int soc_compr_get_caps(struct snd_compr_stream *cstream,
89027d9e 621 struct snd_compr_caps *caps)
1245b700
NK		 622{
623 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 624 struct snd_soc_component *component;
625 struct snd_soc_rtdcom_list *rtdcom;
52cadf1f 626 int ret = 0;
1245b700 627
15e2e619
CK		 628 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
629
9e7e3738
KM		 630 for_each_rtdcom(rtd, rtdcom) {
631 component = rtdcom->component;
632
9e7e3738
KM		 633 if (!component->driver->compr_ops ||
634 !component->driver->compr_ops->get_caps)
635 continue;
636
52cadf1f
CK		 637 ret = component->driver->compr_ops->get_caps(cstream, caps);
638 break;
9e7e3738
KM		 639 }
640
15e2e619 641 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 642 return ret;
643}
644
645static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
89027d9e 646 struct snd_compr_codec_caps *codec)
1245b700
NK		 647{
648 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 649 struct snd_soc_component *component;
650 struct snd_soc_rtdcom_list *rtdcom;
52cadf1f 651 int ret = 0;
1245b700 652
15e2e619
CK		 653 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
654
9e7e3738
KM		 655 for_each_rtdcom(rtd, rtdcom) {
656 component = rtdcom->component;
657
9e7e3738
KM		 658 if (!component->driver->compr_ops ||
659 !component->driver->compr_ops->get_codec_caps)
660 continue;
661
52cadf1f
CK		 662 ret = component->driver->compr_ops->get_codec_caps(cstream,
663 codec);
664 break;
9e7e3738
KM		 665 }
666
15e2e619 667 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 668 return ret;
669}
670
671static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
672{
673 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 674 struct snd_soc_component *component;
675 struct snd_soc_rtdcom_list *rtdcom;
2e622ae4 676 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
52cadf1f 677 int ret = 0;
1245b700 678
15e2e619
CK		 679 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
680
2e622ae4
VK		 681 if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) {
682 ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai);
683 if (ret < 0)
684 goto err;
685 }
686
9e7e3738
KM		 687 for_each_rtdcom(rtd, rtdcom) {
688 component = rtdcom->component;
689
9e7e3738
KM		 690 if (!component->driver->compr_ops ||
691 !component->driver->compr_ops->ack)
692 continue;
693
52cadf1f
CK		 694 ret = component->driver->compr_ops->ack(cstream, bytes);
695 if (ret < 0)
696 goto err;
9e7e3738 697 }
1245b700 698
2e622ae4 699err:
15e2e619 700 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 701 return ret;
702}
703
704static int soc_compr_pointer(struct snd_compr_stream *cstream,
89027d9e 705 struct snd_compr_tstamp *tstamp)
1245b700
NK		 706{
707 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 708 struct snd_soc_component *component;
709 struct snd_soc_rtdcom_list *rtdcom;
52cadf1f 710 int ret = 0;
2e622ae4 711 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1245b700 712
15e2e619
CK		 713 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
714
2e622ae4
VK		 715 if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
716 cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
717
9e7e3738
KM		 718 for_each_rtdcom(rtd, rtdcom) {
719 component = rtdcom->component;
720
9e7e3738
KM		 721 if (!component->driver->compr_ops ||
722 !component->driver->compr_ops->pointer)
723 continue;
1245b700 724
52cadf1f
CK		 725 ret = component->driver->compr_ops->pointer(cstream, tstamp);
726 break;
9e7e3738
KM		 727 }
728
15e2e619 729 mutex_unlock(&rtd->pcm_mutex);
7c9190f7 730 return ret;
1245b700
NK		 731}
732
1f88eb0f 733static int soc_compr_copy(struct snd_compr_stream *cstream,
4daf891c 734 char __user *buf, size_t count)
1f88eb0f
CK		 735{
736 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 737 struct snd_soc_component *component;
738 struct snd_soc_rtdcom_list *rtdcom;
290df4d3 739 int ret = 0;
1f88eb0f
CK		 740
741 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
742
9e7e3738
KM		 743 for_each_rtdcom(rtd, rtdcom) {
744 component = rtdcom->component;
745
9e7e3738
KM		 746 if (!component->driver->compr_ops ||
747 !component->driver->compr_ops->copy)
748 continue;
1f88eb0f 749
290df4d3
CK		 750 ret = component->driver->compr_ops->copy(cstream, buf, count);
751 break;
9e7e3738 752 }
290df4d3 753
1f88eb0f
CK		 754 mutex_unlock(&rtd->pcm_mutex);
755 return ret;
756}
757
02bd90e8 758static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
89027d9e 759 struct snd_compr_metadata *metadata)
36953d98
JK		 760{
761 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 762 struct snd_soc_component *component;
763 struct snd_soc_rtdcom_list *rtdcom;
2e622ae4 764 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
52cadf1f 765 int ret;
36953d98 766
2e622ae4
VK		 767 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) {
768 ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai);
769 if (ret < 0)
770 return ret;
771 }
772
9e7e3738
KM		 773 for_each_rtdcom(rtd, rtdcom) {
774 component = rtdcom->component;
775
9e7e3738
KM		 776 if (!component->driver->compr_ops ||
777 !component->driver->compr_ops->set_metadata)
778 continue;
779
52cadf1f
CK		 780 ret = component->driver->compr_ops->set_metadata(cstream,
781 metadata);
782 if (ret < 0)
783 return ret;
9e7e3738 784 }
36953d98 785
52cadf1f 786 return 0;
36953d98
JK		 787}
788
02bd90e8 789static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
89027d9e 790 struct snd_compr_metadata *metadata)
36953d98
JK		 791{
792 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
9e7e3738
KM		 793 struct snd_soc_component *component;
794 struct snd_soc_rtdcom_list *rtdcom;
2e622ae4 795 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
52cadf1f 796 int ret;
36953d98 797
2e622ae4
VK		 798 if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) {
799 ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai);
800 if (ret < 0)
801 return ret;
802 }
803
9e7e3738
KM		 804 for_each_rtdcom(rtd, rtdcom) {
805 component = rtdcom->component;
806
9e7e3738
KM		 807 if (!component->driver->compr_ops ||
808 !component->driver->compr_ops->get_metadata)
809 continue;
810
52cadf1f
CK		 811 return component->driver->compr_ops->get_metadata(cstream,
812 metadata);
9e7e3738 813 }
36953d98 814
52cadf1f 815 return 0;
36953d98 816}
2a99ef0f 817
1245b700
NK		 818/* ASoC Compress operations */
819static struct snd_compr_ops soc_compr_ops = {
820 .open = soc_compr_open,
821 .free = soc_compr_free,
822 .set_params = soc_compr_set_params,
02bd90e8
VK		 823 .set_metadata = soc_compr_set_metadata,
824 .get_metadata = soc_compr_get_metadata,
1245b700
NK		 825 .get_params = soc_compr_get_params,
826 .trigger = soc_compr_trigger,
827 .pointer = soc_compr_pointer,
828 .ack = soc_compr_ack,
829 .get_caps = soc_compr_get_caps,
830 .get_codec_caps = soc_compr_get_codec_caps
831};
832
2a99ef0f
LG		 833/* ASoC Dynamic Compress operations */
834static struct snd_compr_ops soc_compr_dyn_ops = {
835 .open = soc_compr_open_fe,
836 .free = soc_compr_free_fe,
837 .set_params = soc_compr_set_params_fe,
838 .get_params = soc_compr_get_params,
839 .set_metadata = soc_compr_set_metadata,
840 .get_metadata = soc_compr_get_metadata,
841 .trigger = soc_compr_trigger_fe,
842 .pointer = soc_compr_pointer,
843 .ack = soc_compr_ack,
844 .get_caps = soc_compr_get_caps,
845 .get_codec_caps = soc_compr_get_codec_caps
846};
847
6f0c4226
JY		 848/**
849 * snd_soc_new_compress - create a new compress.
850 *
851 * @rtd: The runtime for which we will create compress
852 * @num: the device index number (zero based - shared with normal PCMs)
853 *
854 * Return: 0 for success, else error.
855 */
856int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
1245b700 857{
9e7e3738
KM		 858 struct snd_soc_component *component;
859 struct snd_soc_rtdcom_list *rtdcom;
1245b700
NK		 860 struct snd_soc_dai *codec_dai = rtd->codec_dai;
861 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
862 struct snd_compr *compr;
2a99ef0f 863 struct snd_pcm *be_pcm;
1245b700
NK		 864 char new_name[64];
865 int ret = 0, direction = 0;
a1068045 866 int playback = 0, capture = 0;
1245b700 867
8151d5e6 868 if (rtd->num_codecs > 1) {
141dfc9e
CK		 869 dev_err(rtd->card->dev,
870 "Compress ASoC: Multicodec not supported\n");
8151d5e6
BC		 871 return -EINVAL;
872 }
873
1245b700 874 /* check client and interface hw capabilities */
daa2db59 875 if (codec_dai->driver->playback.channels_min)
a1068045
VK		 876 playback = 1;
877 if (codec_dai->driver->capture.channels_min)
878 capture = 1;
879
880 capture = capture && cpu_dai->driver->capture.channels_min;
881 playback = playback && cpu_dai->driver->playback.channels_min;
882
883 /*
884 * Compress devices are unidirectional so only one of the directions
885 * should be set, check for that (xor)
886 */
887 if (playback + capture != 1) {
141dfc9e
CK		 888 dev_err(rtd->card->dev,
889 "Compress ASoC: Invalid direction for P %d, C %d\n",
890 playback, capture);
a1068045
VK		 891 return -EINVAL;
892 }
893
aeb6fa0f 894 if (playback)
daa2db59 895 direction = SND_COMPRESS_PLAYBACK;
daa2db59 896 else
a1068045 897 direction = SND_COMPRESS_CAPTURE;
daa2db59 898
09f448a4 899 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
7a0cf42e 900 if (!compr)
1245b700 901 return -ENOMEM;
1245b700 902
1f88eb0f
CK		 903 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
904 GFP_KERNEL);
09f448a4
AS		 905 if (!compr->ops)
906 return -ENOMEM;
2a99ef0f
LG		 907
908 if (rtd->dai_link->dynamic) {
909 snprintf(new_name, sizeof(new_name), "(%s)",
910 rtd->dai_link->stream_name);
911
912 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
d3268a40
QY		 913 rtd->dai_link->dpcm_playback,
914 rtd->dai_link->dpcm_capture, &be_pcm);
2a99ef0f 915 if (ret < 0) {
141dfc9e
CK		 916 dev_err(rtd->card->dev,
917 "Compress ASoC: can't create compressed for %s: %d\n",
918 rtd->dai_link->name, ret);
09f448a4 919 return ret;
2a99ef0f
LG		 920 }
921
922 rtd->pcm = be_pcm;
923 rtd->fe_compr = 1;
d3268a40
QY		 924 if (rtd->dai_link->dpcm_playback)
925 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
926 else if (rtd->dai_link->dpcm_capture)
927 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
2a99ef0f 928 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
aeb6fa0f
PD		 929 } else {
930 snprintf(new_name, sizeof(new_name), "%s %s-%d",
931 rtd->dai_link->stream_name, codec_dai->name, num);
932
2a99ef0f 933 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
aeb6fa0f 934 }
1f88eb0f 935
9e7e3738
KM		 936 for_each_rtdcom(rtd, rtdcom) {
937 component = rtdcom->component;
938
9e7e3738
KM		 939 if (!component->driver->compr_ops ||
940 !component->driver->compr_ops->copy)
941 continue;
942
1f88eb0f 943 compr->ops->copy = soc_compr_copy;
ca76db6c 944 break;
9e7e3738
KM		 945 }
946
1245b700 947 mutex_init(&compr->lock);
e5241a8c
RF		 948 ret = snd_compress_new(rtd->card->snd_card, num, direction,
949 new_name, compr);
1245b700 950 if (ret < 0) {
e5acfc7d 951 component = rtd->codec_dai->component;
141dfc9e
CK		 952 dev_err(component->dev,
953 "Compress ASoC: can't create compress for codec %s: %d\n",
954 component->name, ret);
09f448a4 955 return ret;
1245b700
NK		 956 }
957
202c8f70
CK		 958 /* DAPM dai link stream work */
959 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
960
1245b700
NK		 961 rtd->compr = compr;
962 compr->private_data = rtd;
963
141dfc9e
CK		 964 dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
965 codec_dai->name, cpu_dai->name);
1f88eb0f 966
09f448a4 967 return 0;
1245b700 968}
6f0c4226 969EXPORT_SYMBOL_GPL(snd_soc_new_compress);
Linux 6.x block layer and io_uring tree(s)