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
soc_compr_components_open(struct snd_compr_stream * cstream,struct snd_soc_component ** last)23 static int soc_compr_components_open(struct snd_compr_stream *cstream,
24 struct snd_soc_component **last)
25 {
26 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
27 struct snd_soc_component *component;
28 struct snd_soc_rtdcom_list *rtdcom;
29 int ret;
30
31 for_each_rtdcom(rtd, rtdcom) {
32 component = rtdcom->component;
33
34 if (!component->driver->compr_ops ||
35 !component->driver->compr_ops->open)
36 continue;
37
38 ret = component->driver->compr_ops->open(cstream);
39 if (ret < 0) {
40 dev_err(component->dev,
41 "Compress ASoC: can't open platform %s: %d\n",
42 component->name, ret);
43
44 *last = component;
45 return ret;
46 }
47 }
48
49 *last = NULL;
50 return 0;
51 }
52
soc_compr_components_free(struct snd_compr_stream * cstream,struct snd_soc_component * last)53 static 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
soc_compr_open(struct snd_compr_stream * cstream)76 static 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->card->pcm_mutex, rtd->card->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;
92 }
93 }
94
95 ret = soc_compr_components_open(cstream, &component);
96 if (ret < 0)
97 goto machine_err;
98
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) {
102 dev_err(rtd->dev,
103 "Compress ASoC: %s startup failed: %d\n",
104 rtd->dai_link->name, ret);
105 goto machine_err;
106 }
107 }
108
109 snd_soc_runtime_activate(rtd, cstream->direction);
110
111 mutex_unlock(&rtd->card->pcm_mutex);
112
113 return 0;
114
115 machine_err:
116 soc_compr_components_free(cstream, component);
117
118 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
119 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
120 out:
121 mutex_unlock(&rtd->card->pcm_mutex);
122 return ret;
123 }
124
soc_compr_open_fe(struct snd_compr_stream * cstream)125 static int soc_compr_open_fe(struct snd_compr_stream *cstream)
126 {
127 struct snd_soc_pcm_runtime *fe = cstream->private_data;
128 struct snd_pcm_substream *fe_substream =
129 fe->pcm->streams[cstream->direction].substream;
130 struct snd_soc_component *component;
131 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
132 struct snd_soc_dpcm *dpcm;
133 struct snd_soc_dapm_widget_list *list;
134 int stream;
135 int ret;
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);
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 */
160 for_each_dpcm_be(fe, stream, dpcm)
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 }
167
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) {
171 dev_err(cpu_dai->dev,
172 "Compress ASoC: can't open interface %s: %d\n",
173 cpu_dai->name, ret);
174 goto out;
175 }
176 }
177
178 ret = soc_compr_components_open(cstream, &component);
179 if (ret < 0)
180 goto open_err;
181
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) {
185 pr_err("Compress ASoC: %s startup failed: %d\n",
186 fe->dai_link->name, ret);
187 goto machine_err;
188 }
189 }
190
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
197 snd_soc_runtime_activate(fe, stream);
198
199 mutex_unlock(&fe->card->mutex);
200
201 return 0;
202
203 machine_err:
204 soc_compr_components_free(cstream, component);
205 open_err:
206 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
207 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
208 out:
209 dpcm_path_put(&list);
210 be_err:
211 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
212 mutex_unlock(&fe->card->mutex);
213 return ret;
214 }
215
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 */
close_delayed_work(struct work_struct * work)221 static 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->card->pcm_mutex, rtd->card->pcm_subclass);
228
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");
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->card->pcm_mutex);
243 }
244
soc_compr_free(struct snd_compr_stream * cstream)245 static int soc_compr_free(struct snd_compr_stream *cstream)
246 {
247 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
248 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
249 struct snd_soc_dai *codec_dai = rtd->codec_dai;
250 int stream;
251
252 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
253
254 if (cstream->direction == SND_COMPRESS_PLAYBACK)
255 stream = SNDRV_PCM_STREAM_PLAYBACK;
256 else
257 stream = SNDRV_PCM_STREAM_CAPTURE;
258
259 snd_soc_runtime_deactivate(rtd, stream);
260
261 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
262
263 if (!cpu_dai->active)
264 cpu_dai->rate = 0;
265
266 if (!codec_dai->active)
267 codec_dai->rate = 0;
268
269 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
270 rtd->dai_link->compr_ops->shutdown(cstream);
271
272 soc_compr_components_free(cstream, NULL);
273
274 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
275 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
276
277 if (cstream->direction == SND_COMPRESS_PLAYBACK) {
278 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
279 snd_soc_dapm_stream_event(rtd,
280 SNDRV_PCM_STREAM_PLAYBACK,
281 SND_SOC_DAPM_STREAM_STOP);
282 } else {
283 rtd->pop_wait = 1;
284 queue_delayed_work(system_power_efficient_wq,
285 &rtd->delayed_work,
286 msecs_to_jiffies(rtd->pmdown_time));
287 }
288 } else {
289 /* capture streams can be powered down now */
290 snd_soc_dapm_stream_event(rtd,
291 SNDRV_PCM_STREAM_CAPTURE,
292 SND_SOC_DAPM_STREAM_STOP);
293 }
294
295 mutex_unlock(&rtd->card->pcm_mutex);
296 return 0;
297 }
298
soc_compr_free_fe(struct snd_compr_stream * cstream)299 static int soc_compr_free_fe(struct snd_compr_stream *cstream)
300 {
301 struct snd_soc_pcm_runtime *fe = cstream->private_data;
302 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
303 struct snd_soc_dpcm *dpcm;
304 int stream, ret;
305
306 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
307
308 if (cstream->direction == SND_COMPRESS_PLAYBACK)
309 stream = SNDRV_PCM_STREAM_PLAYBACK;
310 else
311 stream = SNDRV_PCM_STREAM_CAPTURE;
312
313 snd_soc_runtime_deactivate(fe, stream);
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)
319 dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);
320
321 ret = dpcm_be_dai_shutdown(fe, stream);
322
323 /* mark FE's links ready to prune */
324 for_each_dpcm_be(fe, stream, dpcm)
325 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
326
327 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
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
339 soc_compr_components_free(cstream, NULL);
340
341 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
342 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
343
344 mutex_unlock(&fe->card->mutex);
345 return 0;
346 }
347
soc_compr_components_trigger(struct snd_compr_stream * cstream,int cmd)348 static int soc_compr_components_trigger(struct snd_compr_stream *cstream,
349 int cmd)
350 {
351 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
352 struct snd_soc_component *component;
353 struct snd_soc_rtdcom_list *rtdcom;
354 int ret;
355
356 for_each_rtdcom(rtd, rtdcom) {
357 component = rtdcom->component;
358
359 if (!component->driver->compr_ops ||
360 !component->driver->compr_ops->trigger)
361 continue;
362
363 ret = component->driver->compr_ops->trigger(cstream, cmd);
364 if (ret < 0)
365 return ret;
366 }
367
368 return 0;
369 }
370
soc_compr_trigger(struct snd_compr_stream * cstream,int cmd)371 static 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->card->pcm_mutex, rtd->card->pcm_subclass);
379
380 ret = soc_compr_components_trigger(cstream, cmd);
381 if (ret < 0)
382 goto out;
383
384 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
385 cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
386
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;
394 }
395
396 out:
397 mutex_unlock(&rtd->card->pcm_mutex);
398 return ret;
399 }
400
soc_compr_trigger_fe(struct snd_compr_stream * cstream,int cmd)401 static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
402 {
403 struct snd_soc_pcm_runtime *fe = cstream->private_data;
404 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
405 int ret, stream;
406
407 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
408 cmd == SND_COMPR_TRIGGER_DRAIN)
409 return soc_compr_components_trigger(cstream, cmd);
410
411 if (cstream->direction == SND_COMPRESS_PLAYBACK)
412 stream = SNDRV_PCM_STREAM_PLAYBACK;
413 else
414 stream = SNDRV_PCM_STREAM_CAPTURE;
415
416 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
417
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
424 ret = soc_compr_components_trigger(cstream, cmd);
425 if (ret < 0)
426 goto out;
427
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
447 out:
448 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
449 mutex_unlock(&fe->card->mutex);
450 return ret;
451 }
452
soc_compr_components_set_params(struct snd_compr_stream * cstream,struct snd_compr_params * params)453 static int soc_compr_components_set_params(struct snd_compr_stream *cstream,
454 struct snd_compr_params *params)
455 {
456 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
457 struct snd_soc_component *component;
458 struct snd_soc_rtdcom_list *rtdcom;
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
soc_compr_set_params(struct snd_compr_stream * cstream,struct snd_compr_params * params)476 static 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;
480 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
481 int ret;
482
483 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
484
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.
491 */
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
498 ret = soc_compr_components_set_params(cstream, params);
499 if (ret < 0)
500 goto err;
501
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)
505 goto err;
506 }
507
508 if (cstream->direction == SND_COMPRESS_PLAYBACK)
509 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
510 SND_SOC_DAPM_STREAM_START);
511 else
512 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
513 SND_SOC_DAPM_STREAM_START);
514
515 /* cancel any delayed stream shutdown that is pending */
516 rtd->pop_wait = 0;
517 mutex_unlock(&rtd->card->pcm_mutex);
518
519 cancel_delayed_work_sync(&rtd->delayed_work);
520
521 return 0;
522
523 err:
524 mutex_unlock(&rtd->card->pcm_mutex);
525 return ret;
526 }
527
soc_compr_set_params_fe(struct snd_compr_stream * cstream,struct snd_compr_params * params)528 static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
529 struct snd_compr_params *params)
530 {
531 struct snd_soc_pcm_runtime *fe = cstream->private_data;
532 struct snd_pcm_substream *fe_substream =
533 fe->pcm->streams[cstream->direction].substream;
534 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
535 int ret, stream;
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
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
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
568 ret = soc_compr_components_set_params(cstream, params);
569 if (ret < 0)
570 goto out;
571
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
578 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
579 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
580
581 out:
582 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
583 mutex_unlock(&fe->card->mutex);
584 return ret;
585 }
586
soc_compr_get_params(struct snd_compr_stream * cstream,struct snd_codec * params)587 static int soc_compr_get_params(struct snd_compr_stream *cstream,
588 struct snd_codec *params)
589 {
590 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
591 struct snd_soc_component *component;
592 struct snd_soc_rtdcom_list *rtdcom;
593 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
594 int ret = 0;
595
596 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
597
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
604 for_each_rtdcom(rtd, rtdcom) {
605 component = rtdcom->component;
606
607 if (!component->driver->compr_ops ||
608 !component->driver->compr_ops->get_params)
609 continue;
610
611 ret = component->driver->compr_ops->get_params(cstream, params);
612 break;
613 }
614
615 err:
616 mutex_unlock(&rtd->card->pcm_mutex);
617 return ret;
618 }
619
soc_compr_get_caps(struct snd_compr_stream * cstream,struct snd_compr_caps * caps)620 static int soc_compr_get_caps(struct snd_compr_stream *cstream,
621 struct snd_compr_caps *caps)
622 {
623 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
624 struct snd_soc_component *component;
625 struct snd_soc_rtdcom_list *rtdcom;
626 int ret = 0;
627
628 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
629
630 for_each_rtdcom(rtd, rtdcom) {
631 component = rtdcom->component;
632
633 if (!component->driver->compr_ops ||
634 !component->driver->compr_ops->get_caps)
635 continue;
636
637 ret = component->driver->compr_ops->get_caps(cstream, caps);
638 break;
639 }
640
641 mutex_unlock(&rtd->card->pcm_mutex);
642 return ret;
643 }
644
soc_compr_get_codec_caps(struct snd_compr_stream * cstream,struct snd_compr_codec_caps * codec)645 static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
646 struct snd_compr_codec_caps *codec)
647 {
648 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
649 struct snd_soc_component *component;
650 struct snd_soc_rtdcom_list *rtdcom;
651 int ret = 0;
652
653 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
654
655 for_each_rtdcom(rtd, rtdcom) {
656 component = rtdcom->component;
657
658 if (!component->driver->compr_ops ||
659 !component->driver->compr_ops->get_codec_caps)
660 continue;
661
662 ret = component->driver->compr_ops->get_codec_caps(cstream,
663 codec);
664 break;
665 }
666
667 mutex_unlock(&rtd->card->pcm_mutex);
668 return ret;
669 }
670
soc_compr_ack(struct snd_compr_stream * cstream,size_t bytes)671 static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
672 {
673 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
674 struct snd_soc_component *component;
675 struct snd_soc_rtdcom_list *rtdcom;
676 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
677 int ret = 0;
678
679 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
680
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
687 for_each_rtdcom(rtd, rtdcom) {
688 component = rtdcom->component;
689
690 if (!component->driver->compr_ops ||
691 !component->driver->compr_ops->ack)
692 continue;
693
694 ret = component->driver->compr_ops->ack(cstream, bytes);
695 if (ret < 0)
696 goto err;
697 }
698
699 err:
700 mutex_unlock(&rtd->card->pcm_mutex);
701 return ret;
702 }
703
soc_compr_pointer(struct snd_compr_stream * cstream,struct snd_compr_tstamp * tstamp)704 static int soc_compr_pointer(struct snd_compr_stream *cstream,
705 struct snd_compr_tstamp *tstamp)
706 {
707 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
708 struct snd_soc_component *component;
709 struct snd_soc_rtdcom_list *rtdcom;
710 int ret = 0;
711 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
712
713 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
714
715 if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
716 cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
717
718 for_each_rtdcom(rtd, rtdcom) {
719 component = rtdcom->component;
720
721 if (!component->driver->compr_ops ||
722 !component->driver->compr_ops->pointer)
723 continue;
724
725 ret = component->driver->compr_ops->pointer(cstream, tstamp);
726 break;
727 }
728
729 mutex_unlock(&rtd->card->pcm_mutex);
730 return ret;
731 }
732
soc_compr_copy(struct snd_compr_stream * cstream,char __user * buf,size_t count)733 static int soc_compr_copy(struct snd_compr_stream *cstream,
734 char __user *buf, size_t count)
735 {
736 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
737 struct snd_soc_component *component;
738 struct snd_soc_rtdcom_list *rtdcom;
739 int ret = 0;
740
741 mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
742
743 for_each_rtdcom(rtd, rtdcom) {
744 component = rtdcom->component;
745
746 if (!component->driver->compr_ops ||
747 !component->driver->compr_ops->copy)
748 continue;
749
750 ret = component->driver->compr_ops->copy(cstream, buf, count);
751 break;
752 }
753
754 mutex_unlock(&rtd->card->pcm_mutex);
755 return ret;
756 }
757
soc_compr_set_metadata(struct snd_compr_stream * cstream,struct snd_compr_metadata * metadata)758 static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
759 struct snd_compr_metadata *metadata)
760 {
761 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
762 struct snd_soc_component *component;
763 struct snd_soc_rtdcom_list *rtdcom;
764 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
765 int ret;
766
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
773 for_each_rtdcom(rtd, rtdcom) {
774 component = rtdcom->component;
775
776 if (!component->driver->compr_ops ||
777 !component->driver->compr_ops->set_metadata)
778 continue;
779
780 ret = component->driver->compr_ops->set_metadata(cstream,
781 metadata);
782 if (ret < 0)
783 return ret;
784 }
785
786 return 0;
787 }
788
soc_compr_get_metadata(struct snd_compr_stream * cstream,struct snd_compr_metadata * metadata)789 static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
790 struct snd_compr_metadata *metadata)
791 {
792 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
793 struct snd_soc_component *component;
794 struct snd_soc_rtdcom_list *rtdcom;
795 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
796 int ret;
797
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
804 for_each_rtdcom(rtd, rtdcom) {
805 component = rtdcom->component;
806
807 if (!component->driver->compr_ops ||
808 !component->driver->compr_ops->get_metadata)
809 continue;
810
811 return component->driver->compr_ops->get_metadata(cstream,
812 metadata);
813 }
814
815 return 0;
816 }
817
818 /* ASoC Compress operations */
819 static struct snd_compr_ops soc_compr_ops = {
820 .open = soc_compr_open,
821 .free = soc_compr_free,
822 .set_params = soc_compr_set_params,
823 .set_metadata = soc_compr_set_metadata,
824 .get_metadata = soc_compr_get_metadata,
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
833 /* ASoC Dynamic Compress operations */
834 static 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
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 */
snd_soc_new_compress(struct snd_soc_pcm_runtime * rtd,int num)856 int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
857 {
858 struct snd_soc_component *component;
859 struct snd_soc_rtdcom_list *rtdcom;
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;
863 struct snd_pcm *be_pcm;
864 char new_name[64];
865 int ret = 0, direction = 0;
866 int playback = 0, capture = 0;
867
868 if (rtd->num_codecs > 1) {
869 dev_err(rtd->card->dev,
870 "Compress ASoC: Multicodec not supported\n");
871 return -EINVAL;
872 }
873
874 /* check client and interface hw capabilities */
875 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
876 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
877 playback = 1;
878 if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
879 snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
880 capture = 1;
881
882 /*
883 * Compress devices are unidirectional so only one of the directions
884 * should be set, check for that (xor)
885 */
886 if (playback + capture != 1) {
887 dev_err(rtd->card->dev,
888 "Compress ASoC: Invalid direction for P %d, C %d\n",
889 playback, capture);
890 return -EINVAL;
891 }
892
893 if (playback)
894 direction = SND_COMPRESS_PLAYBACK;
895 else
896 direction = SND_COMPRESS_CAPTURE;
897
898 compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
899 if (!compr)
900 return -ENOMEM;
901
902 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
903 GFP_KERNEL);
904 if (!compr->ops)
905 return -ENOMEM;
906
907 if (rtd->dai_link->dynamic) {
908 snprintf(new_name, sizeof(new_name), "(%s)",
909 rtd->dai_link->stream_name);
910
911 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
912 rtd->dai_link->dpcm_playback,
913 rtd->dai_link->dpcm_capture, &be_pcm);
914 if (ret < 0) {
915 dev_err(rtd->card->dev,
916 "Compress ASoC: can't create compressed for %s: %d\n",
917 rtd->dai_link->name, ret);
918 return ret;
919 }
920
921 rtd->pcm = be_pcm;
922 rtd->fe_compr = 1;
923 if (rtd->dai_link->dpcm_playback)
924 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
925 else if (rtd->dai_link->dpcm_capture)
926 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
927 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
928 } else {
929 snprintf(new_name, sizeof(new_name), "%s %s-%d",
930 rtd->dai_link->stream_name, codec_dai->name, num);
931
932 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
933 }
934
935 for_each_rtdcom(rtd, rtdcom) {
936 component = rtdcom->component;
937
938 if (!component->driver->compr_ops ||
939 !component->driver->compr_ops->copy)
940 continue;
941
942 compr->ops->copy = soc_compr_copy;
943 break;
944 }
945
946 mutex_init(&compr->lock);
947 ret = snd_compress_new(rtd->card->snd_card, num, direction,
948 new_name, compr);
949 if (ret < 0) {
950 component = rtd->codec_dai->component;
951 dev_err(component->dev,
952 "Compress ASoC: can't create compress for codec %s: %d\n",
953 component->name, ret);
954 return ret;
955 }
956
957 /* DAPM dai link stream work */
958 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
959
960 rtd->compr = compr;
961 compr->private_data = rtd;
962
963 dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
964 codec_dai->name, cpu_dai->name);
965
966 return 0;
967 }
968 EXPORT_SYMBOL_GPL(snd_soc_new_compress);
969
