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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>
27#include <sound/soc-dpcm.h>
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;
33 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
34 int ret = 0;
35
36 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
37
38 if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
39 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
40 if (ret < 0) {
41 dev_err(cpu_dai->dev, "Compress ASoC: can't open interface %s: %d\n",
42 cpu_dai->name, ret);
43 goto out;
44 }
45 }
46
47 if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
48 ret = platform->driver->compr_ops->open(cstream);
49 if (ret < 0) {
50 pr_err("compress asoc: can't open platform %s\n",
51 platform->component.name);
52 goto plat_err;
53 }
54 }
55
56 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
57 ret = rtd->dai_link->compr_ops->startup(cstream);
58 if (ret < 0) {
59 pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name);
60 goto machine_err;
61 }
62 }
63
64 snd_soc_runtime_activate(rtd, cstream->direction);
65
66 mutex_unlock(&rtd->pcm_mutex);
67
68 return 0;
69
70machine_err:
71 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
72 platform->driver->compr_ops->free(cstream);
73plat_err:
74 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
75 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
76out:
77 mutex_unlock(&rtd->pcm_mutex);
78 return ret;
79}
80
81static int soc_compr_open_fe(struct snd_compr_stream *cstream)
82{
83 struct snd_soc_pcm_runtime *fe = cstream->private_data;
84 struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream;
85 struct snd_soc_platform *platform = fe->platform;
86 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
87 struct snd_soc_dpcm *dpcm;
88 struct snd_soc_dapm_widget_list *list;
89 int stream;
90 int ret = 0;
91
92 if (cstream->direction == SND_COMPRESS_PLAYBACK)
93 stream = SNDRV_PCM_STREAM_PLAYBACK;
94 else
95 stream = SNDRV_PCM_STREAM_CAPTURE;
96
97 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
98
99 if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
100 ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
101 if (ret < 0) {
102 dev_err(cpu_dai->dev, "Compress ASoC: can't open interface %s: %d\n",
103 cpu_dai->name, ret);
104 goto out;
105 }
106 }
107
108
109 if (platform->driver->compr_ops && platform->driver->compr_ops->open) {
110 ret = platform->driver->compr_ops->open(cstream);
111 if (ret < 0) {
112 pr_err("compress asoc: can't open platform %s\n",
113 platform->component.name);
114 goto plat_err;
115 }
116 }
117
118 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
119 ret = fe->dai_link->compr_ops->startup(cstream);
120 if (ret < 0) {
121 pr_err("compress asoc: %s startup failed\n", fe->dai_link->name);
122 goto machine_err;
123 }
124 }
125
126 fe->dpcm[stream].runtime = fe_substream->runtime;
127
128 ret = dpcm_path_get(fe, stream, &list);
129 if (ret < 0)
130 goto fe_err;
131 else if (ret == 0)
132 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
133 fe->dai_link->name, stream ? "capture" : "playback");
134
135 /* calculate valid and active FE <-> BE dpcms */
136 dpcm_process_paths(fe, stream, &list, 1);
137
138 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
139
140 ret = dpcm_be_dai_startup(fe, stream);
141 if (ret < 0) {
142 /* clean up all links */
143 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
144 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
145
146 dpcm_be_disconnect(fe, stream);
147 fe->dpcm[stream].runtime = NULL;
148 goto path_err;
149 }
150
151 dpcm_clear_pending_state(fe, stream);
152 dpcm_path_put(&list);
153
154 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
155 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
156
157 snd_soc_runtime_activate(fe, stream);
158
159 mutex_unlock(&fe->card->mutex);
160
161 return 0;
162
163path_err:
164 dpcm_path_put(&list);
165fe_err:
166 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
167 fe->dai_link->compr_ops->shutdown(cstream);
168machine_err:
169 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
170 platform->driver->compr_ops->free(cstream);
171plat_err:
172 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
173 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
174out:
175 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
176 mutex_unlock(&fe->card->mutex);
177 return ret;
178}
179
180/*
181 * Power down the audio subsystem pmdown_time msecs after close is called.
182 * This is to ensure there are no pops or clicks in between any music tracks
183 * due to DAPM power cycling.
184 */
185static void close_delayed_work(struct work_struct *work)
186{
187 struct snd_soc_pcm_runtime *rtd =
188 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
189 struct snd_soc_dai *codec_dai = rtd->codec_dai;
190
191 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
192
193 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
194 codec_dai->driver->playback.stream_name,
195 codec_dai->playback_active ? "active" : "inactive",
196 rtd->pop_wait ? "yes" : "no");
197
198 /* are we waiting on this codec DAI stream */
199 if (rtd->pop_wait == 1) {
200 rtd->pop_wait = 0;
201 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
202 SND_SOC_DAPM_STREAM_STOP);
203 }
204
205 mutex_unlock(&rtd->pcm_mutex);
206}
207
208static int soc_compr_free(struct snd_compr_stream *cstream)
209{
210 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
211 struct snd_soc_platform *platform = rtd->platform;
212 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
213 struct snd_soc_dai *codec_dai = rtd->codec_dai;
214 int stream;
215
216 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
217
218 if (cstream->direction == SND_COMPRESS_PLAYBACK)
219 stream = SNDRV_PCM_STREAM_PLAYBACK;
220 else
221 stream = SNDRV_PCM_STREAM_CAPTURE;
222
223 snd_soc_runtime_deactivate(rtd, stream);
224
225 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
226
227 if (!cpu_dai->active)
228 cpu_dai->rate = 0;
229
230 if (!codec_dai->active)
231 codec_dai->rate = 0;
232
233
234 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
235 rtd->dai_link->compr_ops->shutdown(cstream);
236
237 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
238 platform->driver->compr_ops->free(cstream);
239
240 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
241 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
242
243 if (cstream->direction == SND_COMPRESS_PLAYBACK) {
244 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
245 snd_soc_dapm_stream_event(rtd,
246 SNDRV_PCM_STREAM_PLAYBACK,
247 SND_SOC_DAPM_STREAM_STOP);
248 } else {
249 rtd->pop_wait = 1;
250 queue_delayed_work(system_power_efficient_wq,
251 &rtd->delayed_work,
252 msecs_to_jiffies(rtd->pmdown_time));
253 }
254 } else {
255 /* capture streams can be powered down now */
256 snd_soc_dapm_stream_event(rtd,
257 SNDRV_PCM_STREAM_CAPTURE,
258 SND_SOC_DAPM_STREAM_STOP);
259 }
260
261 mutex_unlock(&rtd->pcm_mutex);
262 return 0;
263}
264
265static int soc_compr_free_fe(struct snd_compr_stream *cstream)
266{
267 struct snd_soc_pcm_runtime *fe = cstream->private_data;
268 struct snd_soc_platform *platform = fe->platform;
269 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
270 struct snd_soc_dpcm *dpcm;
271 int stream, ret;
272
273 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
274
275 if (cstream->direction == SND_COMPRESS_PLAYBACK)
276 stream = SNDRV_PCM_STREAM_PLAYBACK;
277 else
278 stream = SNDRV_PCM_STREAM_CAPTURE;
279
280 snd_soc_runtime_deactivate(fe, stream);
281
282 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
283
284 ret = dpcm_be_dai_hw_free(fe, stream);
285 if (ret < 0)
286 dev_err(fe->dev, "compressed hw_free failed %d\n", ret);
287
288 ret = dpcm_be_dai_shutdown(fe, stream);
289
290 /* mark FE's links ready to prune */
291 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
292 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
293
294 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
295
296 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
297 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
298
299 dpcm_be_disconnect(fe, stream);
300
301 fe->dpcm[stream].runtime = NULL;
302
303 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
304 fe->dai_link->compr_ops->shutdown(cstream);
305
306 if (platform->driver->compr_ops && platform->driver->compr_ops->free)
307 platform->driver->compr_ops->free(cstream);
308
309 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
310 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
311
312 mutex_unlock(&fe->card->mutex);
313 return 0;
314}
315
316static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
317{
318
319 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
320 struct snd_soc_platform *platform = rtd->platform;
321 struct snd_soc_dai *codec_dai = rtd->codec_dai;
322 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
323 int ret = 0;
324
325 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
326
327 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
328 ret = platform->driver->compr_ops->trigger(cstream, cmd);
329 if (ret < 0)
330 goto out;
331 }
332
333 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
334 cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
335
336
337 switch (cmd) {
338 case SNDRV_PCM_TRIGGER_START:
339 snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
340 break;
341 case SNDRV_PCM_TRIGGER_STOP:
342 snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
343 break;
344 }
345
346out:
347 mutex_unlock(&rtd->pcm_mutex);
348 return ret;
349}
350
351static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
352{
353 struct snd_soc_pcm_runtime *fe = cstream->private_data;
354 struct snd_soc_platform *platform = fe->platform;
355 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
356 int ret = 0, stream;
357
358 if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
359 cmd == SND_COMPR_TRIGGER_DRAIN) {
360
361 if (platform->driver->compr_ops &&
362 platform->driver->compr_ops->trigger)
363 return platform->driver->compr_ops->trigger(cstream,
364 cmd);
365 }
366
367 if (cstream->direction == SND_COMPRESS_PLAYBACK)
368 stream = SNDRV_PCM_STREAM_PLAYBACK;
369 else
370 stream = SNDRV_PCM_STREAM_CAPTURE;
371
372
373 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
374
375 if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) {
376 ret = cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
377 if (ret < 0)
378 goto out;
379 }
380
381 if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) {
382 ret = platform->driver->compr_ops->trigger(cstream, cmd);
383 if (ret < 0)
384 goto out;
385 }
386
387 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
388
389 ret = dpcm_be_dai_trigger(fe, stream, cmd);
390
391 switch (cmd) {
392 case SNDRV_PCM_TRIGGER_START:
393 case SNDRV_PCM_TRIGGER_RESUME:
394 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
395 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
396 break;
397 case SNDRV_PCM_TRIGGER_STOP:
398 case SNDRV_PCM_TRIGGER_SUSPEND:
399 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
400 break;
401 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
402 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
403 break;
404 }
405
406out:
407 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
408 mutex_unlock(&fe->card->mutex);
409 return ret;
410}
411
412static int soc_compr_set_params(struct snd_compr_stream *cstream,
413 struct snd_compr_params *params)
414{
415 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
416 struct snd_soc_platform *platform = rtd->platform;
417 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
418 int ret = 0;
419
420 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
421
422 /* first we call set_params for the platform driver
423 * this should configure the soc side
424 * if the machine has compressed ops then we call that as well
425 * expectation is that platform and machine will configure everything
426 * for this compress path, like configuring pcm port for codec
427 */
428 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
429 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
430 if (ret < 0)
431 goto err;
432 }
433
434 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
435 ret = platform->driver->compr_ops->set_params(cstream, params);
436 if (ret < 0)
437 goto err;
438 }
439
440 if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
441 ret = rtd->dai_link->compr_ops->set_params(cstream);
442 if (ret < 0)
443 goto err;
444 }
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->pcm_mutex);
456
457 cancel_delayed_work_sync(&rtd->delayed_work);
458
459 return ret;
460
461err:
462 mutex_unlock(&rtd->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 = fe->pcm->streams[0].substream;
471 struct snd_soc_platform *platform = fe->platform;
472 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
473 int ret = 0, 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 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
483 ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
484 if (ret < 0)
485 goto out;
486 }
487
488 if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) {
489 ret = platform->driver->compr_ops->set_params(cstream, params);
490 if (ret < 0)
491 goto out;
492 }
493
494 if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
495 ret = fe->dai_link->compr_ops->set_params(cstream);
496 if (ret < 0)
497 goto out;
498 }
499
500 /*
501 * Create an empty hw_params for the BE as the machine driver must
502 * fix this up to match DSP decoder and ASRC configuration.
503 * I.e. machine driver fixup for compressed BE is mandatory.
504 */
505 memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
506 sizeof(struct snd_pcm_hw_params));
507
508 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
509
510 ret = dpcm_be_dai_hw_params(fe, stream);
511 if (ret < 0)
512 goto out;
513
514 ret = dpcm_be_dai_prepare(fe, stream);
515 if (ret < 0)
516 goto out;
517
518 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
519 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
520
521out:
522 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
523 mutex_unlock(&fe->card->mutex);
524 return ret;
525}
526
527static int soc_compr_get_params(struct snd_compr_stream *cstream,
528 struct snd_codec *params)
529{
530 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
531 struct snd_soc_platform *platform = rtd->platform;
532 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
533 int ret = 0;
534
535 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
536
537 if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) {
538 ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai);
539 if (ret < 0)
540 goto err;
541 }
542
543 if (platform->driver->compr_ops && platform->driver->compr_ops->get_params)
544 ret = platform->driver->compr_ops->get_params(cstream, params);
545
546err:
547 mutex_unlock(&rtd->pcm_mutex);
548 return ret;
549}
550
551static int soc_compr_get_caps(struct snd_compr_stream *cstream,
552 struct snd_compr_caps *caps)
553{
554 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
555 struct snd_soc_platform *platform = rtd->platform;
556 int ret = 0;
557
558 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
559
560 if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps)
561 ret = platform->driver->compr_ops->get_caps(cstream, caps);
562
563 mutex_unlock(&rtd->pcm_mutex);
564 return ret;
565}
566
567static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
568 struct snd_compr_codec_caps *codec)
569{
570 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
571 struct snd_soc_platform *platform = rtd->platform;
572 int ret = 0;
573
574 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
575
576 if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps)
577 ret = platform->driver->compr_ops->get_codec_caps(cstream, codec);
578
579 mutex_unlock(&rtd->pcm_mutex);
580 return ret;
581}
582
583static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
584{
585 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
586 struct snd_soc_platform *platform = rtd->platform;
587 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
588 int ret = 0;
589
590 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
591
592 if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) {
593 ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai);
594 if (ret < 0)
595 goto err;
596 }
597
598 if (platform->driver->compr_ops && platform->driver->compr_ops->ack)
599 ret = platform->driver->compr_ops->ack(cstream, bytes);
600
601err:
602 mutex_unlock(&rtd->pcm_mutex);
603 return ret;
604}
605
606static int soc_compr_pointer(struct snd_compr_stream *cstream,
607 struct snd_compr_tstamp *tstamp)
608{
609 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
610 struct snd_soc_platform *platform = rtd->platform;
611 int ret = 0;
612 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
613
614 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
615
616 if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
617 cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
618
619 if (platform->driver->compr_ops && platform->driver->compr_ops->pointer)
620 ret = platform->driver->compr_ops->pointer(cstream, tstamp);
621
622 mutex_unlock(&rtd->pcm_mutex);
623 return ret;
624}
625
626static int soc_compr_copy(struct snd_compr_stream *cstream,
627 char __user *buf, size_t count)
628{
629 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
630 struct snd_soc_platform *platform = rtd->platform;
631 int ret = 0;
632
633 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
634
635 if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
636 ret = platform->driver->compr_ops->copy(cstream, buf, count);
637
638 mutex_unlock(&rtd->pcm_mutex);
639 return ret;
640}
641
642static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
643 struct snd_compr_metadata *metadata)
644{
645 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
646 struct snd_soc_platform *platform = rtd->platform;
647 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
648 int ret = 0;
649
650 if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) {
651 ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai);
652 if (ret < 0)
653 return ret;
654 }
655
656 if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata)
657 ret = platform->driver->compr_ops->set_metadata(cstream, metadata);
658
659 return ret;
660}
661
662static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
663 struct snd_compr_metadata *metadata)
664{
665 struct snd_soc_pcm_runtime *rtd = cstream->private_data;
666 struct snd_soc_platform *platform = rtd->platform;
667 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
668 int ret = 0;
669
670 if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) {
671 ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai);
672 if (ret < 0)
673 return ret;
674 }
675
676 if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata)
677 ret = platform->driver->compr_ops->get_metadata(cstream, metadata);
678
679 return ret;
680}
681
682/* ASoC Compress operations */
683static struct snd_compr_ops soc_compr_ops = {
684 .open = soc_compr_open,
685 .free = soc_compr_free,
686 .set_params = soc_compr_set_params,
687 .set_metadata = soc_compr_set_metadata,
688 .get_metadata = soc_compr_get_metadata,
689 .get_params = soc_compr_get_params,
690 .trigger = soc_compr_trigger,
691 .pointer = soc_compr_pointer,
692 .ack = soc_compr_ack,
693 .get_caps = soc_compr_get_caps,
694 .get_codec_caps = soc_compr_get_codec_caps
695};
696
697/* ASoC Dynamic Compress operations */
698static struct snd_compr_ops soc_compr_dyn_ops = {
699 .open = soc_compr_open_fe,
700 .free = soc_compr_free_fe,
701 .set_params = soc_compr_set_params_fe,
702 .get_params = soc_compr_get_params,
703 .set_metadata = soc_compr_set_metadata,
704 .get_metadata = soc_compr_get_metadata,
705 .trigger = soc_compr_trigger_fe,
706 .pointer = soc_compr_pointer,
707 .ack = soc_compr_ack,
708 .get_caps = soc_compr_get_caps,
709 .get_codec_caps = soc_compr_get_codec_caps
710};
711
712/**
713 * snd_soc_new_compress - create a new compress.
714 *
715 * @rtd: The runtime for which we will create compress
716 * @num: the device index number (zero based - shared with normal PCMs)
717 *
718 * Return: 0 for success, else error.
719 */
720int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
721{
722 struct snd_soc_codec *codec = rtd->codec;
723 struct snd_soc_platform *platform = rtd->platform;
724 struct snd_soc_dai *codec_dai = rtd->codec_dai;
725 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
726 struct snd_compr *compr;
727 struct snd_pcm *be_pcm;
728 char new_name[64];
729 int ret = 0, direction = 0;
730 int playback = 0, capture = 0;
731
732 if (rtd->num_codecs > 1) {
733 dev_err(rtd->card->dev, "Multicodec not supported for compressed stream\n");
734 return -EINVAL;
735 }
736
737 /* check client and interface hw capabilities */
738 snprintf(new_name, sizeof(new_name), "%s %s-%d",
739 rtd->dai_link->stream_name, codec_dai->name, num);
740
741 if (codec_dai->driver->playback.channels_min)
742 playback = 1;
743 if (codec_dai->driver->capture.channels_min)
744 capture = 1;
745
746 capture = capture && cpu_dai->driver->capture.channels_min;
747 playback = playback && cpu_dai->driver->playback.channels_min;
748
749 /*
750 * Compress devices are unidirectional so only one of the directions
751 * should be set, check for that (xor)
752 */
753 if (playback + capture != 1) {
754 dev_err(rtd->card->dev, "Invalid direction for compress P %d, C %d\n",
755 playback, capture);
756 return -EINVAL;
757 }
758
759 if(playback)
760 direction = SND_COMPRESS_PLAYBACK;
761 else
762 direction = SND_COMPRESS_CAPTURE;
763
764 compr = kzalloc(sizeof(*compr), GFP_KERNEL);
765 if (compr == NULL) {
766 snd_printk(KERN_ERR "Cannot allocate compr\n");
767 return -ENOMEM;
768 }
769
770 compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
771 GFP_KERNEL);
772 if (compr->ops == NULL) {
773 dev_err(rtd->card->dev, "Cannot allocate compressed ops\n");
774 ret = -ENOMEM;
775 goto compr_err;
776 }
777
778 if (rtd->dai_link->dynamic) {
779 snprintf(new_name, sizeof(new_name), "(%s)",
780 rtd->dai_link->stream_name);
781
782 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
783 rtd->dai_link->dpcm_playback,
784 rtd->dai_link->dpcm_capture, &be_pcm);
785 if (ret < 0) {
786 dev_err(rtd->card->dev, "ASoC: can't create compressed for %s\n",
787 rtd->dai_link->name);
788 goto compr_err;
789 }
790
791 rtd->pcm = be_pcm;
792 rtd->fe_compr = 1;
793 if (rtd->dai_link->dpcm_playback)
794 be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
795 else if (rtd->dai_link->dpcm_capture)
796 be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
797 memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
798 } else
799 memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
800
801 /* Add copy callback for not memory mapped DSPs */
802 if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
803 compr->ops->copy = soc_compr_copy;
804
805 mutex_init(&compr->lock);
806
807 snprintf(new_name, sizeof(new_name), "%s %s-%d",
808 rtd->dai_link->stream_name,
809 rtd->codec_dai->name, num);
810
811 ret = snd_compress_new(rtd->card->snd_card, num, direction,
812 new_name, compr);
813 if (ret < 0) {
814 pr_err("compress asoc: can't create compress for codec %s\n",
815 codec->component.name);
816 goto compr_err;
817 }
818
819 /* DAPM dai link stream work */
820 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
821
822 rtd->compr = compr;
823 compr->private_data = rtd;
824
825 printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name,
826 cpu_dai->name);
827 return ret;
828
829compr_err:
830 kfree(compr);
831 return ret;
832}
833EXPORT_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
23static 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
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->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
115machine_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);
120out:
121 mutex_unlock(&rtd->card->pcm_mutex);
122 return ret;
123}
124
125static 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
203machine_err:
204 soc_compr_components_free(cstream, component);
205open_err:
206 if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
207 cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
208out:
209 dpcm_path_put(&list);
210be_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 */
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->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
245static 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
299static 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
348static 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
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->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
396out:
397 mutex_unlock(&rtd->card->pcm_mutex);
398 return ret;
399}
400
401static 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
447out:
448 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
449 mutex_unlock(&fe->card->mutex);
450 return ret;
451}
452
453static 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
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;
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
523err:
524 mutex_unlock(&rtd->card->pcm_mutex);
525 return ret;
526}
527
528static 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
581out:
582 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
583 mutex_unlock(&fe->card->mutex);
584 return ret;
585}
586
587static 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
615err:
616 mutex_unlock(&rtd->card->pcm_mutex);
617 return ret;
618}
619
620static 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
645static 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
671static 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
699err:
700 mutex_unlock(&rtd->card->pcm_mutex);
701 return ret;
702}
703
704static 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
733static 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
758static 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
789static 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 */
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,
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 */
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
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)
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}
968EXPORT_SYMBOL_GPL(snd_soc_new_compress);