projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'arm-soc/for-4.1/maintainers' of http://github.com/broadcom/stblinux into...
[linux-2.6-block.git] / sound / soc / soc-compress.c
CommitLineData
1245b700
NK		 1/*
2 * soc-compress.c -- ALSA SoC Compress
3 *
4 * Copyright (C) 2012 Intel Corp.
5 *
6 * Authors: Namarta Kohli <namartax.kohli@intel.com>
7 * Ramesh Babu K V <ramesh.babu@linux.intel.com>
8 * Vinod Koul <vinod.koul@linux.intel.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17#include <linux/kernel.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/slab.h>
21#include <linux/workqueue.h>
22#include <sound/core.h>
23#include <sound/compress_params.h>
24#include <sound/compress_driver.h>
25#include <sound/soc.h>
26#include <sound/initval.h>
2a99ef0f 27#include <sound/soc-dpcm.h>
1245b700
NK		 28
29static int soc_compr_open(struct snd_compr_stream *cstream)
30{
31 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
32 struct snd_soc_platform *platform = rtd->platform;
1245b700
NK		 33 int ret = 0;
34
15e2e619
CK		 35 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
36
1245b700
NK		 37 if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
38 ret = platform->driver->compr_ops->open(cstream);
39 if (ret < 0) {
f4333203
LPC		 40 pr_err("compress asoc: can't open platform %s\n",
41 platform->component.name);
1245b700
NK		 42 goto out;
43 }
44 }
45
46 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
47 ret = rtd->dai_link->compr_ops->startup(cstream);
48 if (ret < 0) {
49 pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name);
50 goto machine_err;
51 }
52 }
53
24894b76 54 snd_soc_runtime_activate(rtd, cstream->direction);
1245b700 55
15e2e619
CK		 56 mutex_unlock(&rtd->pcm_mutex);
57
1245b700
NK		 58 return 0;
59
60machine_err:
61 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
62 platform->driver->compr_ops->free(cstream);
63out:
15e2e619 64 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 65 return ret;
66}
67
2a99ef0f
LG		 68static int soc_compr_open_fe(struct snd_compr_stream *cstream)
69{
70 struct snd_soc_pcm_runtime *fe = cstream->private_data;
71 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
72 struct snd_soc_platform *platform = fe->platform;
2a99ef0f
LG		 73 struct snd_soc_dpcm *dpcm;
74 struct snd_soc_dapm_widget_list *list;
75 int stream;
76 int ret = 0;
77
78 if (cstream->direction == SND_COMPRESS_PLAYBACK)
79 stream = SNDRV_PCM_STREAM_PLAYBACK;
80 else
81 stream = SNDRV_PCM_STREAM_CAPTURE;
82
83 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
84
85 if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
86 ret = platform->driver->compr_ops->open(cstream);
87 if (ret < 0) {
f4333203
LPC		 88 pr_err("compress asoc: can't open platform %s\n",
89 platform->component.name);
2a99ef0f
LG		 90 goto out;
91 }
92 }
93
94 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
95 ret = fe->dai_link->compr_ops->startup(cstream);
96 if (ret < 0) {
97 pr_err("compress asoc: %s startup failed\n", fe->dai_link->name);
98 goto machine_err;
99 }
100 }
101
102 fe->dpcm[stream].runtime = fe_substream->runtime;
103
8f70e515 104 ret = dpcm_path_get(fe, stream, &list);
2e4ec1c0 105 if (ret < 0)
8f70e515 106 goto fe_err;
2e4ec1c0 107 else if (ret == 0)
2a99ef0f
LG		 108 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
109 fe->dai_link->name, stream ? "capture" : "playback");
2a99ef0f
LG		 110
111 /* calculate valid and active FE <-> BE dpcms */
112 dpcm_process_paths(fe, stream, &list, 1);
113
114 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
115
116 ret = dpcm_be_dai_startup(fe, stream);
117 if (ret < 0) {
118 /* clean up all links */
119 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
120 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
121
122 dpcm_be_disconnect(fe, stream);
123 fe->dpcm[stream].runtime = NULL;
124 goto fe_err;
125 }
126
127 dpcm_clear_pending_state(fe, stream);
128 dpcm_path_put(&list);
129
130 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
131 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
132
24894b76 133 snd_soc_runtime_activate(fe, stream);
2a99ef0f
LG		 134
135 mutex_unlock(&fe->card->mutex);
136
137 return 0;
138
139fe_err:
140 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
141 fe->dai_link->compr_ops->shutdown(cstream);
142machine_err:
143 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
144 platform->driver->compr_ops->free(cstream);
145out:
146 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
147 mutex_unlock(&fe->card->mutex);
148 return ret;
149}
150
202c8f70
CK		 151/*
152 * Power down the audio subsystem pmdown_time msecs after close is called.
153 * This is to ensure there are no pops or clicks in between any music tracks
154 * due to DAPM power cycling.
155 */
156static void close_delayed_work(struct work_struct *work)
157{
158 struct snd_soc_pcm_runtime *rtd =
159 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
160 struct snd_soc_dai *codec_dai = rtd->codec_dai;
161
162 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
163
164 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
165 codec_dai->driver->playback.stream_name,
166 codec_dai->playback_active ? "active" : "inactive",
167 rtd->pop_wait ? "yes" : "no");
168
169 /* are we waiting on this codec DAI stream */
170 if (rtd->pop_wait == 1) {
171 rtd->pop_wait = 0;
172 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
173 SND_SOC_DAPM_STREAM_STOP);
174 }
175
176 mutex_unlock(&rtd->pcm_mutex);
177}
178
1245b700
NK		 179static int soc_compr_free(struct snd_compr_stream *cstream)
180{
181 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
182 struct snd_soc_platform *platform = rtd->platform;
183 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
184 struct snd_soc_dai *codec_dai = rtd->codec_dai;
24894b76 185 int stream;
1245b700 186
15e2e619
CK		 187 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
188
24894b76
LPC		 189 if (cstream->direction == SND_COMPRESS_PLAYBACK)
190 stream = SNDRV_PCM_STREAM_PLAYBACK;
191 else
192 stream = SNDRV_PCM_STREAM_CAPTURE;
1245b700 193
24894b76 194 snd_soc_runtime_deactivate(rtd, stream);
da18396f 195
24894b76 196 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
1245b700
NK		 197
198 if (!cpu_dai->active)
199 cpu_dai->rate = 0;
200
201 if (!codec_dai->active)
202 codec_dai->rate = 0;
203
204
205 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
206 rtd->dai_link->compr_ops->shutdown(cstream);
207
208 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
209 platform->driver->compr_ops->free(cstream);
1245b700
NK		 210
211 if (cstream->direction == SND_COMPRESS_PLAYBACK) {
208a1589 212 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
1245b700
NK		 213 snd_soc_dapm_stream_event(rtd,
214 SNDRV_PCM_STREAM_PLAYBACK,
215 SND_SOC_DAPM_STREAM_STOP);
8c3d2aa4 216 } else {
9bffb1fb 217 rtd->pop_wait = 1;
3d24cfe4
MB		 218 queue_delayed_work(system_power_efficient_wq,
219 &rtd->delayed_work,
220 msecs_to_jiffies(rtd->pmdown_time));
8c3d2aa4 221 }
1245b700
NK		 222 } else {
223 /* capture streams can be powered down now */
224 snd_soc_dapm_stream_event(rtd,
225 SNDRV_PCM_STREAM_CAPTURE,
226 SND_SOC_DAPM_STREAM_STOP);
227 }
228
15e2e619 229 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 230 return 0;
231}
232
2a99ef0f
LG		 233static int soc_compr_free_fe(struct snd_compr_stream *cstream)
234{
235 struct snd_soc_pcm_runtime *fe = cstream->private_data;
236 struct snd_soc_platform *platform = fe->platform;
2a99ef0f
LG		 237 struct snd_soc_dpcm *dpcm;
238 int stream, ret;
239
240 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
241
24894b76 242 if (cstream->direction == SND_COMPRESS_PLAYBACK)
2a99ef0f 243 stream = SNDRV_PCM_STREAM_PLAYBACK;
24894b76 244 else
2a99ef0f 245 stream = SNDRV_PCM_STREAM_CAPTURE;
2a99ef0f 246
24894b76 247 snd_soc_runtime_deactivate(fe, stream);
2a99ef0f
LG		 248
249 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
250
251 ret = dpcm_be_dai_hw_free(fe, stream);
252 if (ret < 0)
253 dev_err(fe->dev, "compressed hw_free failed %d\n", ret);
254
255 ret = dpcm_be_dai_shutdown(fe, stream);
256
257 /* mark FE's links ready to prune */
258 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
259 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
260
15f6b09a 261 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
2a99ef0f
LG		 262
263 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
264 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
265
266 dpcm_be_disconnect(fe, stream);
267
268 fe->dpcm[stream].runtime = NULL;
269
270 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
271 fe->dai_link->compr_ops->shutdown(cstream);
272
273 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
274 platform->driver->compr_ops->free(cstream);
275
276 mutex_unlock(&fe->card->mutex);
277 return 0;
278}
279
1245b700
NK		 280static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
281{
282
283 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
284 struct snd_soc_platform *platform = rtd->platform;
285 struct snd_soc_dai *codec_dai = rtd->codec_dai;
286 int ret = 0;
287
15e2e619
CK		 288 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
289
1245b700
NK		 290 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
291 ret = platform->driver->compr_ops->trigger(cstream, cmd);
292 if (ret < 0)
15e2e619 293 goto out;
1245b700
NK		 294 }
295
da18396f
MB		 296 switch (cmd) {
297 case SNDRV_PCM_TRIGGER_START:
298 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
299 break;
300 case SNDRV_PCM_TRIGGER_STOP:
301 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
302 break;
e38b9b74 303 }
1245b700 304
15e2e619
CK		 305out:
306 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 307 return ret;
308}
309
2a99ef0f
LG		 310static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
311{
312 struct snd_soc_pcm_runtime *fe = cstream->private_data;
313 struct snd_soc_platform *platform = fe->platform;
314 int ret = 0, stream;
315
316 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
317 cmd == SND_COMPR_TRIGGER_DRAIN) {
318
319 if (platform->driver->compr_ops &&
15b8e94f
DC		 320 platform->driver->compr_ops->trigger)
321 return platform->driver->compr_ops->trigger(cstream,
322 cmd);
2a99ef0f
LG		 323 }
324
325 if (cstream->direction == SND_COMPRESS_PLAYBACK)
326 stream = SNDRV_PCM_STREAM_PLAYBACK;
327 else
328 stream = SNDRV_PCM_STREAM_CAPTURE;
329
330
331 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
332
333 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
334 ret = platform->driver->compr_ops->trigger(cstream, cmd);
335 if (ret < 0)
336 goto out;
337 }
338
339 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
340
341 ret = dpcm_be_dai_trigger(fe, stream, cmd);
342
343 switch (cmd) {
344 case SNDRV_PCM_TRIGGER_START:
345 case SNDRV_PCM_TRIGGER_RESUME:
346 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
347 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
348 break;
349 case SNDRV_PCM_TRIGGER_STOP:
350 case SNDRV_PCM_TRIGGER_SUSPEND:
351 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
352 break;
353 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
354 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
355 break;
356 }
357
358out:
359 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
360 mutex_unlock(&fe->card->mutex);
361 return ret;
362}
363
1245b700
NK		 364static int soc_compr_set_params(struct snd_compr_stream *cstream,
365 struct snd_compr_params *params)
366{
367 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
368 struct snd_soc_platform *platform = rtd->platform;
1245b700
NK		 369 int ret = 0;
370
15e2e619
CK		 371 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
372
1245b700
NK		 373 /* first we call set_params for the platform driver
374 * this should configure the soc side
375 * if the machine has compressed ops then we call that as well
376 * expectation is that platform and machine will configure everything
377 * for this compress path, like configuring pcm port for codec
378 */
379 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
380 ret = platform->driver->compr_ops->set_params(cstream, params);
381 if (ret < 0)
fa40ef20 382 goto err;
1245b700
NK		 383 }
384
385 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
386 ret = rtd->dai_link->compr_ops->set_params(cstream);
387 if (ret < 0)
fa40ef20 388 goto err;
1245b700
NK		 389 }
390
2c071ed7
CK		 391 if (cstream->direction == SND_COMPRESS_PLAYBACK)
392 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
393 SND_SOC_DAPM_STREAM_START);
394 else
395 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
396 SND_SOC_DAPM_STREAM_START);
1245b700 397
fa40ef20
CK		 398 /* cancel any delayed stream shutdown that is pending */
399 rtd->pop_wait = 0;
400 mutex_unlock(&rtd->pcm_mutex);
401
402 cancel_delayed_work_sync(&rtd->delayed_work);
403
404 return ret;
405
406err:
15e2e619 407 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 408 return ret;
409}
410
2a99ef0f
LG		 411static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
412 struct snd_compr_params *params)
413{
414 struct snd_soc_pcm_runtime *fe = cstream->private_data;
415 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
416 struct snd_soc_platform *platform = fe->platform;
417 int ret = 0, stream;
418
419 if (cstream->direction == SND_COMPRESS_PLAYBACK)
420 stream = SNDRV_PCM_STREAM_PLAYBACK;
421 else
422 stream = SNDRV_PCM_STREAM_CAPTURE;
423
424 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
425
426 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
427 ret = platform->driver->compr_ops->set_params(cstream, params);
428 if (ret < 0)
429 goto out;
430 }
431
432 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
433 ret = fe->dai_link->compr_ops->set_params(cstream);
434 if (ret < 0)
435 goto out;
436 }
437
438 /*
439 * Create an empty hw_params for the BE as the machine driver must
440 * fix this up to match DSP decoder and ASRC configuration.
441 * I.e. machine driver fixup for compressed BE is mandatory.
442 */
443 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
444 sizeof(struct snd_pcm_hw_params));
445
446 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
447
448 ret = dpcm_be_dai_hw_params(fe, stream);
449 if (ret < 0)
450 goto out;
451
452 ret = dpcm_be_dai_prepare(fe, stream);
453 if (ret < 0)
454 goto out;
455
15f6b09a 456 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2a99ef0f
LG		 457 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
458
459out:
460 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
461 mutex_unlock(&fe->card->mutex);
462 return ret;
463}
464
1245b700
NK		 465static int soc_compr_get_params(struct snd_compr_stream *cstream,
466 struct snd_codec *params)
467{
468 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
469 struct snd_soc_platform *platform = rtd->platform;
470 int ret = 0;
471
15e2e619
CK		 472 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
473
1245b700
NK		 474 if (platform->driver->compr_ops && platform->driver->compr_ops->get_params)
475 ret = platform->driver->compr_ops->get_params(cstream, params);
476
15e2e619 477 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 478 return ret;
479}
480
481static int soc_compr_get_caps(struct snd_compr_stream *cstream,
482 struct snd_compr_caps *caps)
483{
484 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
485 struct snd_soc_platform *platform = rtd->platform;
486 int ret = 0;
487
15e2e619
CK		 488 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
489
1245b700
NK		 490 if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps)
491 ret = platform->driver->compr_ops->get_caps(cstream, caps);
492
15e2e619 493 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 494 return ret;
495}
496
497static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
498 struct snd_compr_codec_caps *codec)
499{
500 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
501 struct snd_soc_platform *platform = rtd->platform;
502 int ret = 0;
503
15e2e619
CK		 504 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
505
1245b700
NK		 506 if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps)
507 ret = platform->driver->compr_ops->get_codec_caps(cstream, codec);
508
15e2e619 509 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 510 return ret;
511}
512
513static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
514{
515 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
516 struct snd_soc_platform *platform = rtd->platform;
517 int ret = 0;
518
15e2e619
CK		 519 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
520
1245b700
NK		 521 if (platform->driver->compr_ops && platform->driver->compr_ops->ack)
522 ret = platform->driver->compr_ops->ack(cstream, bytes);
523
15e2e619 524 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 525 return ret;
526}
527
528static int soc_compr_pointer(struct snd_compr_stream *cstream,
529 struct snd_compr_tstamp *tstamp)
530{
531 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
532 struct snd_soc_platform *platform = rtd->platform;
533
15e2e619
CK		 534 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
535
1245b700
NK		 536 if (platform->driver->compr_ops && platform->driver->compr_ops->pointer)
537 platform->driver->compr_ops->pointer(cstream, tstamp);
538
15e2e619 539 mutex_unlock(&rtd->pcm_mutex);
1245b700
NK		 540 return 0;
541}
542
1f88eb0f 543static int soc_compr_copy(struct snd_compr_stream *cstream,
4daf891c 544 char __user *buf, size_t count)
1f88eb0f
CK		 545{
546 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
547 struct snd_soc_platform *platform = rtd->platform;
548 int ret = 0;
549
550 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
551
552 if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
553 ret = platform->driver->compr_ops->copy(cstream, buf, count);
554
555 mutex_unlock(&rtd->pcm_mutex);
556 return ret;
557}
558
02bd90e8 559static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
36953d98
JK		 560 struct snd_compr_metadata *metadata)
561{
562 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
563 struct snd_soc_platform *platform = rtd->platform;
564 int ret = 0;
565
566 if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata)
567 ret = platform->driver->compr_ops->set_metadata(cstream, metadata);
568
569 return ret;
570}
571
02bd90e8 572static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
36953d98
JK		 573 struct snd_compr_metadata *metadata)
574{
575 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
576 struct snd_soc_platform *platform = rtd->platform;
577 int ret = 0;
578
579 if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata)
580 ret = platform->driver->compr_ops->get_metadata(cstream, metadata);
581
582 return ret;
583}
2a99ef0f 584
1245b700
NK		 585/* ASoC Compress operations */
586static struct snd_compr_ops soc_compr_ops = {
587 .open = soc_compr_open,
588 .free = soc_compr_free,
589 .set_params = soc_compr_set_params,
02bd90e8
VK		 590 .set_metadata = soc_compr_set_metadata,
591 .get_metadata = soc_compr_get_metadata,
1245b700
NK		 592 .get_params = soc_compr_get_params,
593 .trigger = soc_compr_trigger,
594 .pointer = soc_compr_pointer,
595 .ack = soc_compr_ack,
596 .get_caps = soc_compr_get_caps,
597 .get_codec_caps = soc_compr_get_codec_caps
598};
599
2a99ef0f
LG		 600/* ASoC Dynamic Compress operations */
601static struct snd_compr_ops soc_compr_dyn_ops = {
602 .open = soc_compr_open_fe,
603 .free = soc_compr_free_fe,
604 .set_params = soc_compr_set_params_fe,
605 .get_params = soc_compr_get_params,
606 .set_metadata = soc_compr_set_metadata,
607 .get_metadata = soc_compr_get_metadata,
608 .trigger = soc_compr_trigger_fe,
609 .pointer = soc_compr_pointer,
610 .ack = soc_compr_ack,
611 .get_caps = soc_compr_get_caps,
612 .get_codec_caps = soc_compr_get_codec_caps
613};
614
1245b700
NK		 615/* create a new compress */
616int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
617{
618 struct snd_soc_codec *codec = rtd->codec;
1f88eb0f 619 struct snd_soc_platform *platform = rtd->platform;
1245b700
NK		 620 struct snd_soc_dai *codec_dai = rtd->codec_dai;
621 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
622 struct snd_compr *compr;
2a99ef0f 623 struct snd_pcm *be_pcm;
1245b700
NK		 624 char new_name[64];
625 int ret = 0, direction = 0;
626
8151d5e6
BC		 627 if (rtd->num_codecs > 1) {
628 dev_err(rtd->card->dev, "Multicodec not supported for compressed stream\n");
629 return -EINVAL;
630 }
631
1245b700
NK		 632 /* check client and interface hw capabilities */
633 snprintf(new_name, sizeof(new_name), "%s %s-%d",
634 rtd->dai_link->stream_name, codec_dai->name, num);
daa2db59
CK		 635
636 if (codec_dai->driver->playback.channels_min)
637 direction = SND_COMPRESS_PLAYBACK;
638 else if (codec_dai->driver->capture.channels_min)
639 direction = SND_COMPRESS_CAPTURE;
640 else
641 return -EINVAL;
642
1245b700
NK		 643 compr = kzalloc(sizeof(*compr), GFP_KERNEL);
644 if (compr == NULL) {
645 snd_printk(KERN_ERR "Cannot allocate compr\n");
646 return -ENOMEM;
647 }
648
1f88eb0f
CK		 649 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
650 GFP_KERNEL);
651 if (compr->ops == NULL) {
652 dev_err(rtd->card->dev, "Cannot allocate compressed ops\n");
653 ret = -ENOMEM;
654 goto compr_err;
655 }
2a99ef0f
LG		 656
657 if (rtd->dai_link->dynamic) {
658 snprintf(new_name, sizeof(new_name), "(%s)",
659 rtd->dai_link->stream_name);
660
661 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
d3268a40
QY		 662 rtd->dai_link->dpcm_playback,
663 rtd->dai_link->dpcm_capture, &be_pcm);
2a99ef0f
LG		 664 if (ret < 0) {
665 dev_err(rtd->card->dev, "ASoC: can't create compressed for %s\n",
666 rtd->dai_link->name);
667 goto compr_err;
668 }
669
670 rtd->pcm = be_pcm;
671 rtd->fe_compr = 1;
d3268a40
QY		 672 if (rtd->dai_link->dpcm_playback)
673 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
674 else if (rtd->dai_link->dpcm_capture)
675 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
2a99ef0f
LG		 676 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
677 } else
678 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
1f88eb0f
CK		 679
680 /* Add copy callback for not memory mapped DSPs */
681 if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
682 compr->ops->copy = soc_compr_copy;
683
1245b700
NK		 684 mutex_init(&compr->lock);
685 ret = snd_compress_new(rtd->card->snd_card, num, direction, compr);
686 if (ret < 0) {
687 pr_err("compress asoc: can't create compress for codec %s\n",
f4333203 688 codec->component.name);
1f88eb0f 689 goto compr_err;
1245b700
NK		 690 }
691
202c8f70
CK		 692 /* DAPM dai link stream work */
693 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
694
1245b700
NK		 695 rtd->compr = compr;
696 compr->private_data = rtd;
697
698 printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name,
699 cpu_dai->name);
700 return ret;
1f88eb0f
CK		 701
702compr_err:
703 kfree(compr);
704 return ret;
1245b700 705}
Linux 6.x block layer and io_uring tree(s)