2 * soc-pcm.c -- ALSA SoC PCM
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Authors: Liam Girdwood <lrg@ti.com>
10 * Mark Brown <broonie@opensource.wolfsonmicro.com>
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/delay.h>
22 #include <linux/pinctrl/consumer.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/slab.h>
25 #include <linux/workqueue.h>
26 #include <linux/export.h>
27 #include <linux/debugfs.h>
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/pcm_params.h>
31 #include <sound/soc.h>
32 #include <sound/soc-dpcm.h>
33 #include <sound/initval.h>
35 #define DPCM_MAX_BE_USERS 8
38 * snd_soc_dai_stream_valid() - check if a DAI supports the given stream
40 * Returns true if the DAI supports the indicated stream type.
42 static bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream)
44 struct snd_soc_pcm_stream *codec_stream;
46 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
47 codec_stream = &dai->driver->playback;
49 codec_stream = &dai->driver->capture;
51 /* If the codec specifies any rate at all, it supports the stream. */
52 return codec_stream->rates;
56 * snd_soc_runtime_activate() - Increment active count for PCM runtime components
57 * @rtd: ASoC PCM runtime that is activated
58 * @stream: Direction of the PCM stream
60 * Increments the active count for all the DAIs and components attached to a PCM
61 * runtime. Should typically be called when a stream is opened.
63 * Must be called with the rtd->pcm_mutex being held
65 void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream)
67 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
70 lockdep_assert_held(&rtd->pcm_mutex);
72 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
73 cpu_dai->playback_active++;
74 for (i = 0; i < rtd->num_codecs; i++)
75 rtd->codec_dais[i]->playback_active++;
77 cpu_dai->capture_active++;
78 for (i = 0; i < rtd->num_codecs; i++)
79 rtd->codec_dais[i]->capture_active++;
83 cpu_dai->component->active++;
84 for (i = 0; i < rtd->num_codecs; i++) {
85 rtd->codec_dais[i]->active++;
86 rtd->codec_dais[i]->component->active++;
91 * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
92 * @rtd: ASoC PCM runtime that is deactivated
93 * @stream: Direction of the PCM stream
95 * Decrements the active count for all the DAIs and components attached to a PCM
96 * runtime. Should typically be called when a stream is closed.
98 * Must be called with the rtd->pcm_mutex being held
100 void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream)
102 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
105 lockdep_assert_held(&rtd->pcm_mutex);
107 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
108 cpu_dai->playback_active--;
109 for (i = 0; i < rtd->num_codecs; i++)
110 rtd->codec_dais[i]->playback_active--;
112 cpu_dai->capture_active--;
113 for (i = 0; i < rtd->num_codecs; i++)
114 rtd->codec_dais[i]->capture_active--;
118 cpu_dai->component->active--;
119 for (i = 0; i < rtd->num_codecs; i++) {
120 rtd->codec_dais[i]->component->active--;
121 rtd->codec_dais[i]->active--;
126 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
127 * @rtd: The ASoC PCM runtime that should be checked.
129 * This function checks whether the power down delay should be ignored for a
130 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
131 * been configured to ignore the delay, or if none of the components benefits
132 * from having the delay.
134 bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
136 struct snd_soc_rtdcom_list *rtdcom;
137 struct snd_soc_component *component;
141 if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
144 for_each_rtdcom(rtd, rtdcom) {
145 component = rtdcom->component;
147 ignore &= !component->driver->use_pmdown_time;
150 /* this will be removed */
151 for (i = 0; i < rtd->num_codecs; i++)
152 ignore &= rtd->codec_dais[i]->component->ignore_pmdown_time;
158 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
159 * @substream: the pcm substream
160 * @hw: the hardware parameters
162 * Sets the substream runtime hardware parameters.
164 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
165 const struct snd_pcm_hardware *hw)
167 struct snd_pcm_runtime *runtime = substream->runtime;
168 runtime->hw.info = hw->info;
169 runtime->hw.formats = hw->formats;
170 runtime->hw.period_bytes_min = hw->period_bytes_min;
171 runtime->hw.period_bytes_max = hw->period_bytes_max;
172 runtime->hw.periods_min = hw->periods_min;
173 runtime->hw.periods_max = hw->periods_max;
174 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
175 runtime->hw.fifo_size = hw->fifo_size;
178 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
180 /* DPCM stream event, send event to FE and all active BEs. */
181 int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
184 struct snd_soc_dpcm *dpcm;
186 list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) {
188 struct snd_soc_pcm_runtime *be = dpcm->be;
190 dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
191 be->dai_link->name, event, dir);
193 if ((event == SND_SOC_DAPM_STREAM_STOP) &&
194 (be->dpcm[dir].users >= 1))
197 snd_soc_dapm_stream_event(be, dir, event);
200 snd_soc_dapm_stream_event(fe, dir, event);
205 static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
206 struct snd_soc_dai *soc_dai)
208 struct snd_soc_pcm_runtime *rtd = substream->private_data;
211 if (soc_dai->rate && (soc_dai->driver->symmetric_rates ||
212 rtd->dai_link->symmetric_rates)) {
213 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n",
216 ret = snd_pcm_hw_constraint_single(substream->runtime,
217 SNDRV_PCM_HW_PARAM_RATE,
220 dev_err(soc_dai->dev,
221 "ASoC: Unable to apply rate constraint: %d\n",
227 if (soc_dai->channels && (soc_dai->driver->symmetric_channels ||
228 rtd->dai_link->symmetric_channels)) {
229 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n",
232 ret = snd_pcm_hw_constraint_single(substream->runtime,
233 SNDRV_PCM_HW_PARAM_CHANNELS,
236 dev_err(soc_dai->dev,
237 "ASoC: Unable to apply channel symmetry constraint: %d\n",
243 if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits ||
244 rtd->dai_link->symmetric_samplebits)) {
245 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n",
246 soc_dai->sample_bits);
248 ret = snd_pcm_hw_constraint_single(substream->runtime,
249 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
250 soc_dai->sample_bits);
252 dev_err(soc_dai->dev,
253 "ASoC: Unable to apply sample bits symmetry constraint: %d\n",
262 static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
263 struct snd_pcm_hw_params *params)
265 struct snd_soc_pcm_runtime *rtd = substream->private_data;
266 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
267 unsigned int rate, channels, sample_bits, symmetry, i;
269 rate = params_rate(params);
270 channels = params_channels(params);
271 sample_bits = snd_pcm_format_physical_width(params_format(params));
273 /* reject unmatched parameters when applying symmetry */
274 symmetry = cpu_dai->driver->symmetric_rates ||
275 rtd->dai_link->symmetric_rates;
277 for (i = 0; i < rtd->num_codecs; i++)
278 symmetry |= rtd->codec_dais[i]->driver->symmetric_rates;
280 if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) {
281 dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n",
282 cpu_dai->rate, rate);
286 symmetry = cpu_dai->driver->symmetric_channels ||
287 rtd->dai_link->symmetric_channels;
289 for (i = 0; i < rtd->num_codecs; i++)
290 symmetry |= rtd->codec_dais[i]->driver->symmetric_channels;
292 if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) {
293 dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n",
294 cpu_dai->channels, channels);
298 symmetry = cpu_dai->driver->symmetric_samplebits ||
299 rtd->dai_link->symmetric_samplebits;
301 for (i = 0; i < rtd->num_codecs; i++)
302 symmetry |= rtd->codec_dais[i]->driver->symmetric_samplebits;
304 if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) {
305 dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n",
306 cpu_dai->sample_bits, sample_bits);
313 static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream)
315 struct snd_soc_pcm_runtime *rtd = substream->private_data;
316 struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver;
317 struct snd_soc_dai_link *link = rtd->dai_link;
318 unsigned int symmetry, i;
320 symmetry = cpu_driver->symmetric_rates || link->symmetric_rates ||
321 cpu_driver->symmetric_channels || link->symmetric_channels ||
322 cpu_driver->symmetric_samplebits || link->symmetric_samplebits;
324 for (i = 0; i < rtd->num_codecs; i++)
325 symmetry = symmetry ||
326 rtd->codec_dais[i]->driver->symmetric_rates ||
327 rtd->codec_dais[i]->driver->symmetric_channels ||
328 rtd->codec_dais[i]->driver->symmetric_samplebits;
333 static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
335 struct snd_soc_pcm_runtime *rtd = substream->private_data;
341 ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
343 dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
347 static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
349 struct snd_soc_pcm_runtime *rtd = substream->private_data;
350 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
351 struct snd_soc_dai *codec_dai;
353 unsigned int bits = 0, cpu_bits;
355 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
356 for (i = 0; i < rtd->num_codecs; i++) {
357 codec_dai = rtd->codec_dais[i];
358 if (codec_dai->driver->playback.sig_bits == 0) {
362 bits = max(codec_dai->driver->playback.sig_bits, bits);
364 cpu_bits = cpu_dai->driver->playback.sig_bits;
366 for (i = 0; i < rtd->num_codecs; i++) {
367 codec_dai = rtd->codec_dais[i];
368 if (codec_dai->driver->capture.sig_bits == 0) {
372 bits = max(codec_dai->driver->capture.sig_bits, bits);
374 cpu_bits = cpu_dai->driver->capture.sig_bits;
377 soc_pcm_set_msb(substream, bits);
378 soc_pcm_set_msb(substream, cpu_bits);
381 static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
383 struct snd_pcm_runtime *runtime = substream->runtime;
384 struct snd_pcm_hardware *hw = &runtime->hw;
385 struct snd_soc_pcm_runtime *rtd = substream->private_data;
386 struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver;
387 struct snd_soc_dai_driver *codec_dai_drv;
388 struct snd_soc_pcm_stream *codec_stream;
389 struct snd_soc_pcm_stream *cpu_stream;
390 unsigned int chan_min = 0, chan_max = UINT_MAX;
391 unsigned int rate_min = 0, rate_max = UINT_MAX;
392 unsigned int rates = UINT_MAX;
393 u64 formats = ULLONG_MAX;
396 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
397 cpu_stream = &cpu_dai_drv->playback;
399 cpu_stream = &cpu_dai_drv->capture;
401 /* first calculate min/max only for CODECs in the DAI link */
402 for (i = 0; i < rtd->num_codecs; i++) {
405 * Skip CODECs which don't support the current stream type.
406 * Otherwise, since the rate, channel, and format values will
407 * zero in that case, we would have no usable settings left,
408 * causing the resulting setup to fail.
409 * At least one CODEC should match, otherwise we should have
410 * bailed out on a higher level, since there would be no
411 * CODEC to support the transfer direction in that case.
413 if (!snd_soc_dai_stream_valid(rtd->codec_dais[i],
417 codec_dai_drv = rtd->codec_dais[i]->driver;
418 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
419 codec_stream = &codec_dai_drv->playback;
421 codec_stream = &codec_dai_drv->capture;
422 chan_min = max(chan_min, codec_stream->channels_min);
423 chan_max = min(chan_max, codec_stream->channels_max);
424 rate_min = max(rate_min, codec_stream->rate_min);
425 rate_max = min_not_zero(rate_max, codec_stream->rate_max);
426 formats &= codec_stream->formats;
427 rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates);
431 * chan min/max cannot be enforced if there are multiple CODEC DAIs
432 * connected to a single CPU DAI, use CPU DAI's directly and let
433 * channel allocation be fixed up later
435 if (rtd->num_codecs > 1) {
436 chan_min = cpu_stream->channels_min;
437 chan_max = cpu_stream->channels_max;
440 hw->channels_min = max(chan_min, cpu_stream->channels_min);
441 hw->channels_max = min(chan_max, cpu_stream->channels_max);
443 hw->formats &= formats & cpu_stream->formats;
445 hw->formats = formats & cpu_stream->formats;
446 hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
448 snd_pcm_limit_hw_rates(runtime);
450 hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
451 hw->rate_min = max(hw->rate_min, rate_min);
452 hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max);
453 hw->rate_max = min_not_zero(hw->rate_max, rate_max);
457 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
458 * then initialized and any private data can be allocated. This also calls
459 * startup for the cpu DAI, platform, machine and codec DAI.
461 static int soc_pcm_open(struct snd_pcm_substream *substream)
463 struct snd_soc_pcm_runtime *rtd = substream->private_data;
464 struct snd_pcm_runtime *runtime = substream->runtime;
465 struct snd_soc_platform *platform = rtd->platform;
466 struct snd_soc_component *component;
467 struct snd_soc_rtdcom_list *rtdcom;
468 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
469 struct snd_soc_dai *codec_dai;
470 const char *codec_dai_name = "multicodec";
471 int i, ret = 0, __ret;
473 pinctrl_pm_select_default_state(cpu_dai->dev);
474 for (i = 0; i < rtd->num_codecs; i++)
475 pinctrl_pm_select_default_state(rtd->codec_dais[i]->dev);
477 for_each_rtdcom(rtd, rtdcom) {
478 component = rtdcom->component;
480 pm_runtime_get_sync(component->dev);
483 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
485 /* startup the audio subsystem */
486 if (cpu_dai->driver->ops->startup) {
487 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
489 dev_err(cpu_dai->dev, "ASoC: can't open interface"
490 " %s: %d\n", cpu_dai->name, ret);
495 if (platform && platform->driver->ops && platform->driver->ops->open) {
496 ret = platform->driver->ops->open(substream);
498 dev_err(platform->dev, "ASoC: can't open platform"
499 " %s: %d\n", platform->component.name, ret);
505 for_each_rtdcom(rtd, rtdcom) {
506 component = rtdcom->component;
508 /* ignore duplication for now */
509 if (platform && (component == &platform->component))
512 if (!component->driver->ops ||
513 !component->driver->ops->open)
516 __ret = component->driver->ops->open(substream);
518 dev_err(component->dev,
519 "ASoC: can't open component %s: %d\n",
520 component->name, ret);
527 for (i = 0; i < rtd->num_codecs; i++) {
528 codec_dai = rtd->codec_dais[i];
529 if (codec_dai->driver->ops->startup) {
530 ret = codec_dai->driver->ops->startup(substream,
533 dev_err(codec_dai->dev,
534 "ASoC: can't open codec %s: %d\n",
535 codec_dai->name, ret);
540 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
541 codec_dai->tx_mask = 0;
543 codec_dai->rx_mask = 0;
546 if (rtd->dai_link->ops->startup) {
547 ret = rtd->dai_link->ops->startup(substream);
549 pr_err("ASoC: %s startup failed: %d\n",
550 rtd->dai_link->name, ret);
555 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
556 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm)
559 /* Check that the codec and cpu DAIs are compatible */
560 soc_pcm_init_runtime_hw(substream);
562 if (rtd->num_codecs == 1)
563 codec_dai_name = rtd->codec_dai->name;
565 if (soc_pcm_has_symmetry(substream))
566 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
569 if (!runtime->hw.rates) {
570 printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
571 codec_dai_name, cpu_dai->name);
574 if (!runtime->hw.formats) {
575 printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n",
576 codec_dai_name, cpu_dai->name);
579 if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
580 runtime->hw.channels_min > runtime->hw.channels_max) {
581 printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n",
582 codec_dai_name, cpu_dai->name);
586 soc_pcm_apply_msb(substream);
588 /* Symmetry only applies if we've already got an active stream. */
589 if (cpu_dai->active) {
590 ret = soc_pcm_apply_symmetry(substream, cpu_dai);
595 for (i = 0; i < rtd->num_codecs; i++) {
596 if (rtd->codec_dais[i]->active) {
597 ret = soc_pcm_apply_symmetry(substream,
604 pr_debug("ASoC: %s <-> %s info:\n",
605 codec_dai_name, cpu_dai->name);
606 pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates);
607 pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min,
608 runtime->hw.channels_max);
609 pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min,
610 runtime->hw.rate_max);
614 snd_soc_runtime_activate(rtd, substream->stream);
616 mutex_unlock(&rtd->pcm_mutex);
620 if (rtd->dai_link->ops->shutdown)
621 rtd->dai_link->ops->shutdown(substream);
628 codec_dai = rtd->codec_dais[i];
629 if (codec_dai->driver->ops->shutdown)
630 codec_dai->driver->ops->shutdown(substream, codec_dai);
634 for_each_rtdcom(rtd, rtdcom) {
635 component = rtdcom->component;
637 /* ignore duplication for now */
638 if (platform && (component == &platform->component))
641 if (!component->driver->ops ||
642 !component->driver->ops->close)
645 component->driver->ops->close(substream);
648 if (platform && platform->driver->ops && platform->driver->ops->close)
649 platform->driver->ops->close(substream);
652 if (cpu_dai->driver->ops->shutdown)
653 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
655 mutex_unlock(&rtd->pcm_mutex);
657 for_each_rtdcom(rtd, rtdcom) {
658 component = rtdcom->component;
660 pm_runtime_mark_last_busy(component->dev);
661 pm_runtime_put_autosuspend(component->dev);
664 for (i = 0; i < rtd->num_codecs; i++) {
665 if (!rtd->codec_dais[i]->active)
666 pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->dev);
668 if (!cpu_dai->active)
669 pinctrl_pm_select_sleep_state(cpu_dai->dev);
675 * Power down the audio subsystem pmdown_time msecs after close is called.
676 * This is to ensure there are no pops or clicks in between any music tracks
677 * due to DAPM power cycling.
679 static void close_delayed_work(struct work_struct *work)
681 struct snd_soc_pcm_runtime *rtd =
682 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
683 struct snd_soc_dai *codec_dai = rtd->codec_dais[0];
685 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
687 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
688 codec_dai->driver->playback.stream_name,
689 codec_dai->playback_active ? "active" : "inactive",
690 rtd->pop_wait ? "yes" : "no");
692 /* are we waiting on this codec DAI stream */
693 if (rtd->pop_wait == 1) {
695 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
696 SND_SOC_DAPM_STREAM_STOP);
699 mutex_unlock(&rtd->pcm_mutex);
703 * Called by ALSA when a PCM substream is closed. Private data can be
704 * freed here. The cpu DAI, codec DAI, machine and platform are also
707 static int soc_pcm_close(struct snd_pcm_substream *substream)
709 struct snd_soc_pcm_runtime *rtd = substream->private_data;
710 struct snd_soc_platform *platform = rtd->platform;
711 struct snd_soc_component *component;
712 struct snd_soc_rtdcom_list *rtdcom;
713 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
714 struct snd_soc_dai *codec_dai;
717 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
719 snd_soc_runtime_deactivate(rtd, substream->stream);
721 /* clear the corresponding DAIs rate when inactive */
722 if (!cpu_dai->active)
725 for (i = 0; i < rtd->num_codecs; i++) {
726 codec_dai = rtd->codec_dais[i];
727 if (!codec_dai->active)
731 snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
733 if (cpu_dai->driver->ops->shutdown)
734 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
736 for (i = 0; i < rtd->num_codecs; i++) {
737 codec_dai = rtd->codec_dais[i];
738 if (codec_dai->driver->ops->shutdown)
739 codec_dai->driver->ops->shutdown(substream, codec_dai);
742 if (rtd->dai_link->ops->shutdown)
743 rtd->dai_link->ops->shutdown(substream);
745 if (platform && platform->driver->ops && platform->driver->ops->close)
746 platform->driver->ops->close(substream);
748 for_each_rtdcom(rtd, rtdcom) {
749 component = rtdcom->component;
751 /* ignore duplication for now */
752 if (platform && (component == &platform->component))
755 if (!component->driver->ops ||
756 !component->driver->ops->close)
759 component->driver->ops->close(substream);
762 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
763 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
764 /* powered down playback stream now */
765 snd_soc_dapm_stream_event(rtd,
766 SNDRV_PCM_STREAM_PLAYBACK,
767 SND_SOC_DAPM_STREAM_STOP);
769 /* start delayed pop wq here for playback streams */
771 queue_delayed_work(system_power_efficient_wq,
773 msecs_to_jiffies(rtd->pmdown_time));
776 /* capture streams can be powered down now */
777 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
778 SND_SOC_DAPM_STREAM_STOP);
781 mutex_unlock(&rtd->pcm_mutex);
783 for_each_rtdcom(rtd, rtdcom) {
784 component = rtdcom->component;
786 pm_runtime_mark_last_busy(component->dev);
787 pm_runtime_put_autosuspend(component->dev);
790 for (i = 0; i < rtd->num_codecs; i++) {
791 if (!rtd->codec_dais[i]->active)
792 pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->dev);
794 if (!cpu_dai->active)
795 pinctrl_pm_select_sleep_state(cpu_dai->dev);
801 * Called by ALSA when the PCM substream is prepared, can set format, sample
802 * rate, etc. This function is non atomic and can be called multiple times,
803 * it can refer to the runtime info.
805 static int soc_pcm_prepare(struct snd_pcm_substream *substream)
807 struct snd_soc_pcm_runtime *rtd = substream->private_data;
808 struct snd_soc_platform *platform = rtd->platform;
809 struct snd_soc_component *component;
810 struct snd_soc_rtdcom_list *rtdcom;
811 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
812 struct snd_soc_dai *codec_dai;
815 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
817 if (rtd->dai_link->ops->prepare) {
818 ret = rtd->dai_link->ops->prepare(substream);
820 dev_err(rtd->card->dev, "ASoC: machine prepare error:"
826 if (platform && platform->driver->ops && platform->driver->ops->prepare) {
827 ret = platform->driver->ops->prepare(substream);
829 dev_err(platform->dev, "ASoC: platform prepare error:"
835 for_each_rtdcom(rtd, rtdcom) {
836 component = rtdcom->component;
838 /* ignore duplication for now */
839 if (platform && (component == &platform->component))
842 if (!component->driver->ops ||
843 !component->driver->ops->prepare)
846 ret = component->driver->ops->prepare(substream);
848 dev_err(component->dev,
849 "ASoC: platform prepare error: %d\n", ret);
854 for (i = 0; i < rtd->num_codecs; i++) {
855 codec_dai = rtd->codec_dais[i];
856 if (codec_dai->driver->ops->prepare) {
857 ret = codec_dai->driver->ops->prepare(substream,
860 dev_err(codec_dai->dev,
861 "ASoC: codec DAI prepare error: %d\n",
868 if (cpu_dai->driver->ops->prepare) {
869 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
871 dev_err(cpu_dai->dev,
872 "ASoC: cpu DAI prepare error: %d\n", ret);
877 /* cancel any delayed stream shutdown that is pending */
878 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
881 cancel_delayed_work(&rtd->delayed_work);
884 snd_soc_dapm_stream_event(rtd, substream->stream,
885 SND_SOC_DAPM_STREAM_START);
887 for (i = 0; i < rtd->num_codecs; i++)
888 snd_soc_dai_digital_mute(rtd->codec_dais[i], 0,
890 snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
893 mutex_unlock(&rtd->pcm_mutex);
897 static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params,
900 struct snd_interval *interval;
901 int channels = hweight_long(mask);
903 interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
904 interval->min = channels;
905 interval->max = channels;
908 int soc_dai_hw_params(struct snd_pcm_substream *substream,
909 struct snd_pcm_hw_params *params,
910 struct snd_soc_dai *dai)
914 if (dai->driver->ops->hw_params) {
915 ret = dai->driver->ops->hw_params(substream, params, dai);
917 dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n",
927 * Called by ALSA when the hardware params are set by application. This
928 * function can also be called multiple times and can allocate buffers
929 * (using snd_pcm_lib_* ). It's non-atomic.
931 static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
932 struct snd_pcm_hw_params *params)
934 struct snd_soc_pcm_runtime *rtd = substream->private_data;
935 struct snd_soc_platform *platform = rtd->platform;
936 struct snd_soc_component *component;
937 struct snd_soc_rtdcom_list *rtdcom;
938 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
939 int i, ret = 0, __ret;
941 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
942 if (rtd->dai_link->ops->hw_params) {
943 ret = rtd->dai_link->ops->hw_params(substream, params);
945 dev_err(rtd->card->dev, "ASoC: machine hw_params"
946 " failed: %d\n", ret);
951 for (i = 0; i < rtd->num_codecs; i++) {
952 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
953 struct snd_pcm_hw_params codec_params;
956 * Skip CODECs which don't support the current stream type,
957 * the idea being that if a CODEC is not used for the currently
958 * set up transfer direction, it should not need to be
959 * configured, especially since the configuration used might
960 * not even be supported by that CODEC. There may be cases
961 * however where a CODEC needs to be set up although it is
962 * actually not being used for the transfer, e.g. if a
963 * capture-only CODEC is acting as an LRCLK and/or BCLK master
964 * for the DAI link including a playback-only CODEC.
965 * If this becomes necessary, we will have to augment the
966 * machine driver setup with information on how to act, so
967 * we can do the right thing here.
969 if (!snd_soc_dai_stream_valid(codec_dai, substream->stream))
972 /* copy params for each codec */
973 codec_params = *params;
975 /* fixup params based on TDM slot masks */
976 if (codec_dai->tx_mask)
977 soc_pcm_codec_params_fixup(&codec_params,
979 if (codec_dai->rx_mask)
980 soc_pcm_codec_params_fixup(&codec_params,
983 ret = soc_dai_hw_params(substream, &codec_params, codec_dai);
987 codec_dai->rate = params_rate(&codec_params);
988 codec_dai->channels = params_channels(&codec_params);
989 codec_dai->sample_bits = snd_pcm_format_physical_width(
990 params_format(&codec_params));
993 ret = soc_dai_hw_params(substream, params, cpu_dai);
997 if (platform && platform->driver->ops && platform->driver->ops->hw_params) {
998 ret = platform->driver->ops->hw_params(substream, params);
1000 dev_err(platform->dev, "ASoC: %s hw params failed: %d\n",
1001 platform->component.name, ret);
1007 for_each_rtdcom(rtd, rtdcom) {
1008 component = rtdcom->component;
1010 /* ignore duplication for now */
1011 if (platform && (component == &platform->component))
1014 if (!component->driver->ops ||
1015 !component->driver->ops->hw_params)
1018 __ret = component->driver->ops->hw_params(substream, params);
1020 dev_err(component->dev,
1021 "ASoC: %s hw params failed: %d\n",
1022 component->name, ret);
1029 /* store the parameters for each DAIs */
1030 cpu_dai->rate = params_rate(params);
1031 cpu_dai->channels = params_channels(params);
1032 cpu_dai->sample_bits =
1033 snd_pcm_format_physical_width(params_format(params));
1035 ret = soc_pcm_params_symmetry(substream, params);
1039 mutex_unlock(&rtd->pcm_mutex);
1043 for_each_rtdcom(rtd, rtdcom) {
1044 component = rtdcom->component;
1046 /* ignore duplication */
1047 if (platform && (component == &platform->component))
1050 if (!component->driver->ops ||
1051 !component->driver->ops->hw_free)
1054 component->driver->ops->hw_free(substream);
1057 if (platform && platform->driver->ops && platform->driver->ops->hw_free)
1058 platform->driver->ops->hw_free(substream);
1061 if (cpu_dai->driver->ops->hw_free)
1062 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
1065 i = rtd->num_codecs;
1069 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
1070 if (codec_dai->driver->ops->hw_free)
1071 codec_dai->driver->ops->hw_free(substream, codec_dai);
1072 codec_dai->rate = 0;
1075 if (rtd->dai_link->ops->hw_free)
1076 rtd->dai_link->ops->hw_free(substream);
1078 mutex_unlock(&rtd->pcm_mutex);
1083 * Frees resources allocated by hw_params, can be called multiple times
1085 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
1087 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1088 struct snd_soc_platform *platform = rtd->platform;
1089 struct snd_soc_component *component;
1090 struct snd_soc_rtdcom_list *rtdcom;
1091 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1092 struct snd_soc_dai *codec_dai;
1093 bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
1096 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
1098 /* clear the corresponding DAIs parameters when going to be inactive */
1099 if (cpu_dai->active == 1) {
1101 cpu_dai->channels = 0;
1102 cpu_dai->sample_bits = 0;
1105 for (i = 0; i < rtd->num_codecs; i++) {
1106 codec_dai = rtd->codec_dais[i];
1107 if (codec_dai->active == 1) {
1108 codec_dai->rate = 0;
1109 codec_dai->channels = 0;
1110 codec_dai->sample_bits = 0;
1114 /* apply codec digital mute */
1115 for (i = 0; i < rtd->num_codecs; i++) {
1116 if ((playback && rtd->codec_dais[i]->playback_active == 1) ||
1117 (!playback && rtd->codec_dais[i]->capture_active == 1))
1118 snd_soc_dai_digital_mute(rtd->codec_dais[i], 1,
1122 /* free any machine hw params */
1123 if (rtd->dai_link->ops->hw_free)
1124 rtd->dai_link->ops->hw_free(substream);
1126 /* free any DMA resources */
1127 if (platform && platform->driver->ops && platform->driver->ops->hw_free)
1128 platform->driver->ops->hw_free(substream);
1130 /* free any component resources */
1131 for_each_rtdcom(rtd, rtdcom) {
1132 component = rtdcom->component;
1134 /* ignore duplication for now */
1135 if (platform && (component == &platform->component))
1138 if (!component->driver->ops ||
1139 !component->driver->ops->hw_free)
1142 component->driver->ops->hw_free(substream);
1145 /* now free hw params for the DAIs */
1146 for (i = 0; i < rtd->num_codecs; i++) {
1147 codec_dai = rtd->codec_dais[i];
1148 if (codec_dai->driver->ops->hw_free)
1149 codec_dai->driver->ops->hw_free(substream, codec_dai);
1152 if (cpu_dai->driver->ops->hw_free)
1153 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
1155 mutex_unlock(&rtd->pcm_mutex);
1159 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1161 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1162 struct snd_soc_platform *platform = rtd->platform;
1163 struct snd_soc_component *component;
1164 struct snd_soc_rtdcom_list *rtdcom;
1165 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1166 struct snd_soc_dai *codec_dai;
1169 for (i = 0; i < rtd->num_codecs; i++) {
1170 codec_dai = rtd->codec_dais[i];
1171 if (codec_dai->driver->ops->trigger) {
1172 ret = codec_dai->driver->ops->trigger(substream,
1179 if (platform && platform->driver->ops && platform->driver->ops->trigger) {
1180 ret = platform->driver->ops->trigger(substream, cmd);
1185 for_each_rtdcom(rtd, rtdcom) {
1186 component = rtdcom->component;
1188 /* ignore duplication for now */
1189 if (platform && (component == &platform->component))
1192 if (!component->driver->ops ||
1193 !component->driver->ops->trigger)
1196 ret = component->driver->ops->trigger(substream, cmd);
1201 if (cpu_dai->driver->ops->trigger) {
1202 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
1207 if (rtd->dai_link->ops->trigger) {
1208 ret = rtd->dai_link->ops->trigger(substream, cmd);
1216 static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
1219 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1220 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1221 struct snd_soc_dai *codec_dai;
1224 for (i = 0; i < rtd->num_codecs; i++) {
1225 codec_dai = rtd->codec_dais[i];
1226 if (codec_dai->driver->ops->bespoke_trigger) {
1227 ret = codec_dai->driver->ops->bespoke_trigger(substream,
1234 if (cpu_dai->driver->ops->bespoke_trigger) {
1235 ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai);
1242 * soc level wrapper for pointer callback
1243 * If cpu_dai, codec_dai, platform driver has the delay callback, than
1244 * the runtime->delay will be updated accordingly.
1246 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1248 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1249 struct snd_soc_platform *platform = rtd->platform;
1250 struct snd_soc_component *component;
1251 struct snd_soc_rtdcom_list *rtdcom;
1252 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1253 struct snd_soc_dai *codec_dai;
1254 struct snd_pcm_runtime *runtime = substream->runtime;
1255 snd_pcm_uframes_t offset = 0;
1256 snd_pcm_sframes_t delay = 0;
1257 snd_pcm_sframes_t codec_delay = 0;
1260 if (platform && platform->driver->ops && platform->driver->ops->pointer)
1261 offset = platform->driver->ops->pointer(substream);
1263 for_each_rtdcom(rtd, rtdcom) {
1264 component = rtdcom->component;
1266 /* ignore duplication for now */
1267 if (platform && (component == &platform->component))
1270 if (!component->driver->ops ||
1271 !component->driver->ops->pointer)
1274 /* FIXME: use 1st pointer */
1275 offset = component->driver->ops->pointer(substream);
1279 if (cpu_dai->driver->ops->delay)
1280 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
1282 for (i = 0; i < rtd->num_codecs; i++) {
1283 codec_dai = rtd->codec_dais[i];
1284 if (codec_dai->driver->ops->delay)
1285 codec_delay = max(codec_delay,
1286 codec_dai->driver->ops->delay(substream,
1289 delay += codec_delay;
1291 runtime->delay = delay;
1296 /* connect a FE and BE */
1297 static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
1298 struct snd_soc_pcm_runtime *be, int stream)
1300 struct snd_soc_dpcm *dpcm;
1302 /* only add new dpcms */
1303 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1304 if (dpcm->be == be && dpcm->fe == fe)
1308 dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
1314 be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
1315 dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW;
1316 list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients);
1317 list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);
1319 dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n",
1320 stream ? "capture" : "playback", fe->dai_link->name,
1321 stream ? "<-" : "->", be->dai_link->name);
1323 #ifdef CONFIG_DEBUG_FS
1324 if (fe->debugfs_dpcm_root)
1325 dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
1326 fe->debugfs_dpcm_root, &dpcm->state);
1331 /* reparent a BE onto another FE */
1332 static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1333 struct snd_soc_pcm_runtime *be, int stream)
1335 struct snd_soc_dpcm *dpcm;
1336 struct snd_pcm_substream *fe_substream, *be_substream;
1338 /* reparent if BE is connected to other FEs */
1339 if (!be->dpcm[stream].users)
1342 be_substream = snd_soc_dpcm_get_substream(be, stream);
1344 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
1348 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
1349 stream ? "capture" : "playback",
1350 dpcm->fe->dai_link->name,
1351 stream ? "<-" : "->", dpcm->be->dai_link->name);
1353 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1354 be_substream->runtime = fe_substream->runtime;
1359 /* disconnect a BE and FE */
1360 void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
1362 struct snd_soc_dpcm *dpcm, *d;
1364 list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) {
1365 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
1366 stream ? "capture" : "playback",
1367 dpcm->be->dai_link->name);
1369 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1372 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
1373 stream ? "capture" : "playback", fe->dai_link->name,
1374 stream ? "<-" : "->", dpcm->be->dai_link->name);
1376 /* BEs still alive need new FE */
1377 dpcm_be_reparent(fe, dpcm->be, stream);
1379 #ifdef CONFIG_DEBUG_FS
1380 debugfs_remove(dpcm->debugfs_state);
1382 list_del(&dpcm->list_be);
1383 list_del(&dpcm->list_fe);
1388 /* get BE for DAI widget and stream */
1389 static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1390 struct snd_soc_dapm_widget *widget, int stream)
1392 struct snd_soc_pcm_runtime *be;
1395 dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name);
1397 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1398 list_for_each_entry(be, &card->rtd_list, list) {
1400 if (!be->dai_link->no_pcm)
1403 dev_dbg(card->dev, "ASoC: try BE : %s\n",
1404 be->cpu_dai->playback_widget ?
1405 be->cpu_dai->playback_widget->name : "(not set)");
1407 if (be->cpu_dai->playback_widget == widget)
1410 for (i = 0; i < be->num_codecs; i++) {
1411 struct snd_soc_dai *dai = be->codec_dais[i];
1412 if (dai->playback_widget == widget)
1418 list_for_each_entry(be, &card->rtd_list, list) {
1420 if (!be->dai_link->no_pcm)
1423 dev_dbg(card->dev, "ASoC: try BE %s\n",
1424 be->cpu_dai->capture_widget ?
1425 be->cpu_dai->capture_widget->name : "(not set)");
1427 if (be->cpu_dai->capture_widget == widget)
1430 for (i = 0; i < be->num_codecs; i++) {
1431 struct snd_soc_dai *dai = be->codec_dais[i];
1432 if (dai->capture_widget == widget)
1438 /* dai link name and stream name set correctly ? */
1439 dev_err(card->dev, "ASoC: can't get %s BE for %s\n",
1440 stream ? "capture" : "playback", widget->name);
1444 static inline struct snd_soc_dapm_widget *
1445 dai_get_widget(struct snd_soc_dai *dai, int stream)
1447 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1448 return dai->playback_widget;
1450 return dai->capture_widget;
1453 static int widget_in_list(struct snd_soc_dapm_widget_list *list,
1454 struct snd_soc_dapm_widget *widget)
1458 for (i = 0; i < list->num_widgets; i++) {
1459 if (widget == list->widgets[i])
1466 static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget,
1467 enum snd_soc_dapm_direction dir)
1469 struct snd_soc_card *card = widget->dapm->card;
1470 struct snd_soc_pcm_runtime *rtd;
1473 if (dir == SND_SOC_DAPM_DIR_OUT) {
1474 list_for_each_entry(rtd, &card->rtd_list, list) {
1475 if (!rtd->dai_link->no_pcm)
1478 if (rtd->cpu_dai->playback_widget == widget)
1481 for (i = 0; i < rtd->num_codecs; ++i) {
1482 struct snd_soc_dai *dai = rtd->codec_dais[i];
1483 if (dai->playback_widget == widget)
1487 } else { /* SND_SOC_DAPM_DIR_IN */
1488 list_for_each_entry(rtd, &card->rtd_list, list) {
1489 if (!rtd->dai_link->no_pcm)
1492 if (rtd->cpu_dai->capture_widget == widget)
1495 for (i = 0; i < rtd->num_codecs; ++i) {
1496 struct snd_soc_dai *dai = rtd->codec_dais[i];
1497 if (dai->capture_widget == widget)
1506 int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
1507 int stream, struct snd_soc_dapm_widget_list **list)
1509 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
1512 /* get number of valid DAI paths and their widgets */
1513 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list,
1514 dpcm_end_walk_at_be);
1516 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
1517 stream ? "capture" : "playback");
1522 static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1523 struct snd_soc_dapm_widget_list **list_)
1525 struct snd_soc_dpcm *dpcm;
1526 struct snd_soc_dapm_widget_list *list = *list_;
1527 struct snd_soc_dapm_widget *widget;
1530 /* Destroy any old FE <--> BE connections */
1531 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1534 /* is there a valid CPU DAI widget for this BE */
1535 widget = dai_get_widget(dpcm->be->cpu_dai, stream);
1537 /* prune the BE if it's no longer in our active list */
1538 if (widget && widget_in_list(list, widget))
1541 /* is there a valid CODEC DAI widget for this BE */
1542 for (i = 0; i < dpcm->be->num_codecs; i++) {
1543 struct snd_soc_dai *dai = dpcm->be->codec_dais[i];
1544 widget = dai_get_widget(dai, stream);
1546 /* prune the BE if it's no longer in our active list */
1547 if (widget && widget_in_list(list, widget))
1551 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
1552 stream ? "capture" : "playback",
1553 dpcm->be->dai_link->name, fe->dai_link->name);
1554 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
1555 dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1559 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
1563 static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1564 struct snd_soc_dapm_widget_list **list_)
1566 struct snd_soc_card *card = fe->card;
1567 struct snd_soc_dapm_widget_list *list = *list_;
1568 struct snd_soc_pcm_runtime *be;
1569 int i, new = 0, err;
1571 /* Create any new FE <--> BE connections */
1572 for (i = 0; i < list->num_widgets; i++) {
1574 switch (list->widgets[i]->id) {
1575 case snd_soc_dapm_dai_in:
1576 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
1579 case snd_soc_dapm_dai_out:
1580 if (stream != SNDRV_PCM_STREAM_CAPTURE)
1587 /* is there a valid BE rtd for this widget */
1588 be = dpcm_get_be(card, list->widgets[i], stream);
1590 dev_err(fe->dev, "ASoC: no BE found for %s\n",
1591 list->widgets[i]->name);
1595 /* make sure BE is a real BE */
1596 if (!be->dai_link->no_pcm)
1599 /* don't connect if FE is not running */
1600 if (!fe->dpcm[stream].runtime && !fe->fe_compr)
1603 /* newly connected FE and BE */
1604 err = dpcm_be_connect(fe, be, stream);
1606 dev_err(fe->dev, "ASoC: can't connect %s\n",
1607 list->widgets[i]->name);
1609 } else if (err == 0) /* already connected */
1613 be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1617 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
1622 * Find the corresponding BE DAIs that source or sink audio to this
1625 int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
1626 int stream, struct snd_soc_dapm_widget_list **list, int new)
1629 return dpcm_add_paths(fe, stream, list);
1631 return dpcm_prune_paths(fe, stream, list);
1634 void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
1636 struct snd_soc_dpcm *dpcm;
1638 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
1639 dpcm->be->dpcm[stream].runtime_update =
1640 SND_SOC_DPCM_UPDATE_NO;
1643 static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
1646 struct snd_soc_dpcm *dpcm;
1648 /* disable any enabled and non active backends */
1649 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1651 struct snd_soc_pcm_runtime *be = dpcm->be;
1652 struct snd_pcm_substream *be_substream =
1653 snd_soc_dpcm_get_substream(be, stream);
1655 if (be->dpcm[stream].users == 0)
1656 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
1657 stream ? "capture" : "playback",
1658 be->dpcm[stream].state);
1660 if (--be->dpcm[stream].users != 0)
1663 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1666 soc_pcm_close(be_substream);
1667 be_substream->runtime = NULL;
1668 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1672 int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
1674 struct snd_soc_dpcm *dpcm;
1677 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1678 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1680 struct snd_soc_pcm_runtime *be = dpcm->be;
1681 struct snd_pcm_substream *be_substream =
1682 snd_soc_dpcm_get_substream(be, stream);
1684 if (!be_substream) {
1685 dev_err(be->dev, "ASoC: no backend %s stream\n",
1686 stream ? "capture" : "playback");
1690 /* is this op for this BE ? */
1691 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1694 /* first time the dpcm is open ? */
1695 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS)
1696 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
1697 stream ? "capture" : "playback",
1698 be->dpcm[stream].state);
1700 if (be->dpcm[stream].users++ != 0)
1703 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1704 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1707 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1708 stream ? "capture" : "playback", be->dai_link->name);
1710 be_substream->runtime = be->dpcm[stream].runtime;
1711 err = soc_pcm_open(be_substream);
1713 dev_err(be->dev, "ASoC: BE open failed %d\n", err);
1714 be->dpcm[stream].users--;
1715 if (be->dpcm[stream].users < 0)
1716 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
1717 stream ? "capture" : "playback",
1718 be->dpcm[stream].state);
1720 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1724 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1731 /* disable any enabled and non active backends */
1732 list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1733 struct snd_soc_pcm_runtime *be = dpcm->be;
1734 struct snd_pcm_substream *be_substream =
1735 snd_soc_dpcm_get_substream(be, stream);
1737 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1740 if (be->dpcm[stream].users == 0)
1741 dev_err(be->dev, "ASoC: no users %s at close %d\n",
1742 stream ? "capture" : "playback",
1743 be->dpcm[stream].state);
1745 if (--be->dpcm[stream].users != 0)
1748 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1751 soc_pcm_close(be_substream);
1752 be_substream->runtime = NULL;
1753 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1759 static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
1760 struct snd_soc_pcm_stream *stream,
1763 runtime->hw.rate_min = stream->rate_min;
1764 runtime->hw.rate_max = stream->rate_max;
1765 runtime->hw.channels_min = stream->channels_min;
1766 runtime->hw.channels_max = stream->channels_max;
1767 if (runtime->hw.formats)
1768 runtime->hw.formats &= formats & stream->formats;
1770 runtime->hw.formats = formats & stream->formats;
1771 runtime->hw.rates = stream->rates;
1774 static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream)
1776 struct snd_soc_pcm_runtime *fe = substream->private_data;
1777 struct snd_soc_dpcm *dpcm;
1778 u64 formats = ULLONG_MAX;
1779 int stream = substream->stream;
1781 if (!fe->dai_link->dpcm_merged_format)
1785 * It returns merged BE codec format
1786 * if FE want to use it (= dpcm_merged_format)
1789 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1790 struct snd_soc_pcm_runtime *be = dpcm->be;
1791 struct snd_soc_dai_driver *codec_dai_drv;
1792 struct snd_soc_pcm_stream *codec_stream;
1795 for (i = 0; i < be->num_codecs; i++) {
1796 codec_dai_drv = be->codec_dais[i]->driver;
1797 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1798 codec_stream = &codec_dai_drv->playback;
1800 codec_stream = &codec_dai_drv->capture;
1802 formats &= codec_stream->formats;
1809 static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
1811 struct snd_pcm_runtime *runtime = substream->runtime;
1812 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1813 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1814 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
1815 u64 format = dpcm_runtime_base_format(substream);
1817 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1818 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback, format);
1820 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture, format);
1823 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
1825 /* Set FE's runtime_update state; the state is protected via PCM stream lock
1826 * for avoiding the race with trigger callback.
1827 * If the state is unset and a trigger is pending while the previous operation,
1828 * process the pending trigger action here.
1830 static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
1831 int stream, enum snd_soc_dpcm_update state)
1833 struct snd_pcm_substream *substream =
1834 snd_soc_dpcm_get_substream(fe, stream);
1836 snd_pcm_stream_lock_irq(substream);
1837 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
1838 dpcm_fe_dai_do_trigger(substream,
1839 fe->dpcm[stream].trigger_pending - 1);
1840 fe->dpcm[stream].trigger_pending = 0;
1842 fe->dpcm[stream].runtime_update = state;
1843 snd_pcm_stream_unlock_irq(substream);
1846 static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
1849 struct snd_soc_dpcm *dpcm;
1850 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1851 struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai;
1854 /* apply symmetry for FE */
1855 if (soc_pcm_has_symmetry(fe_substream))
1856 fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1858 /* Symmetry only applies if we've got an active stream. */
1859 if (fe_cpu_dai->active) {
1860 err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
1865 /* apply symmetry for BE */
1866 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1867 struct snd_soc_pcm_runtime *be = dpcm->be;
1868 struct snd_pcm_substream *be_substream =
1869 snd_soc_dpcm_get_substream(be, stream);
1870 struct snd_soc_pcm_runtime *rtd = be_substream->private_data;
1873 if (rtd->dai_link->be_hw_params_fixup)
1876 if (soc_pcm_has_symmetry(be_substream))
1877 be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1879 /* Symmetry only applies if we've got an active stream. */
1880 if (rtd->cpu_dai->active) {
1881 err = soc_pcm_apply_symmetry(be_substream, rtd->cpu_dai);
1886 for (i = 0; i < rtd->num_codecs; i++) {
1887 if (rtd->codec_dais[i]->active) {
1888 err = soc_pcm_apply_symmetry(be_substream,
1889 rtd->codec_dais[i]);
1899 static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1901 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1902 struct snd_pcm_runtime *runtime = fe_substream->runtime;
1903 int stream = fe_substream->stream, ret = 0;
1905 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
1907 ret = dpcm_be_dai_startup(fe, fe_substream->stream);
1909 dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret);
1913 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
1915 /* start the DAI frontend */
1916 ret = soc_pcm_open(fe_substream);
1918 dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret);
1922 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1924 dpcm_set_fe_runtime(fe_substream);
1925 snd_pcm_limit_hw_rates(runtime);
1927 ret = dpcm_apply_symmetry(fe_substream, stream);
1929 dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n",
1934 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
1938 dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
1940 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
1944 int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
1946 struct snd_soc_dpcm *dpcm;
1948 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1949 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
1951 struct snd_soc_pcm_runtime *be = dpcm->be;
1952 struct snd_pcm_substream *be_substream =
1953 snd_soc_dpcm_get_substream(be, stream);
1955 /* is this op for this BE ? */
1956 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1959 if (be->dpcm[stream].users == 0)
1960 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
1961 stream ? "capture" : "playback",
1962 be->dpcm[stream].state);
1964 if (--be->dpcm[stream].users != 0)
1967 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
1968 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN))
1971 dev_dbg(be->dev, "ASoC: close BE %s\n",
1972 be->dai_link->name);
1974 soc_pcm_close(be_substream);
1975 be_substream->runtime = NULL;
1977 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1982 static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
1984 struct snd_soc_pcm_runtime *fe = substream->private_data;
1985 int stream = substream->stream;
1987 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
1989 /* shutdown the BEs */
1990 dpcm_be_dai_shutdown(fe, substream->stream);
1992 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
1994 /* now shutdown the frontend */
1995 soc_pcm_close(substream);
1997 /* run the stream event for each BE */
1998 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
2000 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
2001 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2005 int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
2007 struct snd_soc_dpcm *dpcm;
2009 /* only hw_params backends that are either sinks or sources
2010 * to this frontend DAI */
2011 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2013 struct snd_soc_pcm_runtime *be = dpcm->be;
2014 struct snd_pcm_substream *be_substream =
2015 snd_soc_dpcm_get_substream(be, stream);
2017 /* is this op for this BE ? */
2018 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2021 /* only free hw when no longer used - check all FEs */
2022 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2025 /* do not free hw if this BE is used by other FE */
2026 if (be->dpcm[stream].users > 1)
2029 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2030 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2031 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2032 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
2033 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2034 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2037 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
2038 be->dai_link->name);
2040 soc_pcm_hw_free(be_substream);
2042 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2048 static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
2050 struct snd_soc_pcm_runtime *fe = substream->private_data;
2051 int err, stream = substream->stream;
2053 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2054 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2056 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
2058 /* call hw_free on the frontend */
2059 err = soc_pcm_hw_free(substream);
2061 dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
2062 fe->dai_link->name);
2064 /* only hw_params backends that are either sinks or sources
2065 * to this frontend DAI */
2066 err = dpcm_be_dai_hw_free(fe, stream);
2068 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2069 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2071 mutex_unlock(&fe->card->mutex);
2075 int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
2077 struct snd_soc_dpcm *dpcm;
2080 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2082 struct snd_soc_pcm_runtime *be = dpcm->be;
2083 struct snd_pcm_substream *be_substream =
2084 snd_soc_dpcm_get_substream(be, stream);
2086 /* is this op for this BE ? */
2087 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2090 /* copy params for each dpcm */
2091 memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params,
2092 sizeof(struct snd_pcm_hw_params));
2094 /* perform any hw_params fixups */
2095 if (be->dai_link->be_hw_params_fixup) {
2096 ret = be->dai_link->be_hw_params_fixup(be,
2100 "ASoC: hw_params BE fixup failed %d\n",
2106 /* only allow hw_params() if no connected FEs are running */
2107 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
2110 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2111 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2112 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
2115 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
2116 be->dai_link->name);
2118 ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params);
2120 dev_err(dpcm->be->dev,
2121 "ASoC: hw_params BE failed %d\n", ret);
2125 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2130 /* disable any enabled and non active backends */
2131 list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2132 struct snd_soc_pcm_runtime *be = dpcm->be;
2133 struct snd_pcm_substream *be_substream =
2134 snd_soc_dpcm_get_substream(be, stream);
2136 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2139 /* only allow hw_free() if no connected FEs are running */
2140 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2143 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2144 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2145 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2146 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2149 soc_pcm_hw_free(be_substream);
2155 static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
2156 struct snd_pcm_hw_params *params)
2158 struct snd_soc_pcm_runtime *fe = substream->private_data;
2159 int ret, stream = substream->stream;
2161 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2162 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2164 memcpy(&fe->dpcm[substream->stream].hw_params, params,
2165 sizeof(struct snd_pcm_hw_params));
2166 ret = dpcm_be_dai_hw_params(fe, substream->stream);
2168 dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret);
2172 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
2173 fe->dai_link->name, params_rate(params),
2174 params_channels(params), params_format(params));
2176 /* call hw_params on the frontend */
2177 ret = soc_pcm_hw_params(substream, params);
2179 dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret);
2180 dpcm_be_dai_hw_free(fe, stream);
2182 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2185 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2186 mutex_unlock(&fe->card->mutex);
2190 static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
2191 struct snd_pcm_substream *substream, int cmd)
2195 dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n",
2196 dpcm->be->dai_link->name, cmd);
2198 ret = soc_pcm_trigger(substream, cmd);
2200 dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret);
2205 int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
2208 struct snd_soc_dpcm *dpcm;
2211 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2213 struct snd_soc_pcm_runtime *be = dpcm->be;
2214 struct snd_pcm_substream *be_substream =
2215 snd_soc_dpcm_get_substream(be, stream);
2217 /* is this op for this BE ? */
2218 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2222 case SNDRV_PCM_TRIGGER_START:
2223 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2224 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2227 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2231 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2233 case SNDRV_PCM_TRIGGER_RESUME:
2234 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2237 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2241 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2243 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2244 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
2247 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2251 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2253 case SNDRV_PCM_TRIGGER_STOP:
2254 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2257 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2260 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2264 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2266 case SNDRV_PCM_TRIGGER_SUSPEND:
2267 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2270 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2273 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2277 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
2279 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2280 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2283 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2286 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2290 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2297 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
2299 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
2301 struct snd_soc_pcm_runtime *fe = substream->private_data;
2302 int stream = substream->stream, ret;
2303 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2305 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
2308 case SND_SOC_DPCM_TRIGGER_PRE:
2309 /* call trigger on the frontend before the backend. */
2311 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
2312 fe->dai_link->name, cmd);
2314 ret = soc_pcm_trigger(substream, cmd);
2316 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2320 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2322 case SND_SOC_DPCM_TRIGGER_POST:
2323 /* call trigger on the frontend after the backend. */
2325 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2327 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2331 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
2332 fe->dai_link->name, cmd);
2334 ret = soc_pcm_trigger(substream, cmd);
2336 case SND_SOC_DPCM_TRIGGER_BESPOKE:
2337 /* bespoke trigger() - handles both FE and BEs */
2339 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
2340 fe->dai_link->name, cmd);
2342 ret = soc_pcm_bespoke_trigger(substream, cmd);
2344 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2349 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
2350 fe->dai_link->name);
2356 case SNDRV_PCM_TRIGGER_START:
2357 case SNDRV_PCM_TRIGGER_RESUME:
2358 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2359 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2361 case SNDRV_PCM_TRIGGER_STOP:
2362 case SNDRV_PCM_TRIGGER_SUSPEND:
2363 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2365 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2366 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2371 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
2375 static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2377 struct snd_soc_pcm_runtime *fe = substream->private_data;
2378 int stream = substream->stream;
2380 /* if FE's runtime_update is already set, we're in race;
2381 * process this trigger later at exit
2383 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2384 fe->dpcm[stream].trigger_pending = cmd + 1;
2385 return 0; /* delayed, assuming it's successful */
2388 /* we're alone, let's trigger */
2389 return dpcm_fe_dai_do_trigger(substream, cmd);
2392 int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
2394 struct snd_soc_dpcm *dpcm;
2397 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2399 struct snd_soc_pcm_runtime *be = dpcm->be;
2400 struct snd_pcm_substream *be_substream =
2401 snd_soc_dpcm_get_substream(be, stream);
2403 /* is this op for this BE ? */
2404 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2407 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2408 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2409 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2412 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
2413 be->dai_link->name);
2415 ret = soc_pcm_prepare(be_substream);
2417 dev_err(be->dev, "ASoC: backend prepare failed %d\n",
2422 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2427 static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
2429 struct snd_soc_pcm_runtime *fe = substream->private_data;
2430 int stream = substream->stream, ret = 0;
2432 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2434 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
2436 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2438 /* there is no point preparing this FE if there are no BEs */
2439 if (list_empty(&fe->dpcm[stream].be_clients)) {
2440 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
2441 fe->dai_link->name);
2446 ret = dpcm_be_dai_prepare(fe, substream->stream);
2450 /* call prepare on the frontend */
2451 ret = soc_pcm_prepare(substream);
2453 dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
2454 fe->dai_link->name);
2458 /* run the stream event for each BE */
2459 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2460 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2463 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2464 mutex_unlock(&fe->card->mutex);
2469 static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
2470 unsigned int cmd, void *arg)
2472 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2473 struct snd_soc_platform *platform = rtd->platform;
2474 struct snd_soc_component *component;
2475 struct snd_soc_rtdcom_list *rtdcom;
2477 if (platform && platform->driver->ops && platform->driver->ops->ioctl)
2478 return platform->driver->ops->ioctl(substream, cmd, arg);
2480 for_each_rtdcom(rtd, rtdcom) {
2481 component = rtdcom->component;
2483 /* ignore duplication for now */
2484 if (platform && (component == &platform->component))
2487 if (!component->driver->ops ||
2488 !component->driver->ops->ioctl)
2491 /* FIXME: use 1st ioctl */
2492 return component->driver->ops->ioctl(substream, cmd, arg);
2495 return snd_pcm_lib_ioctl(substream, cmd, arg);
2498 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2500 struct snd_pcm_substream *substream =
2501 snd_soc_dpcm_get_substream(fe, stream);
2502 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2505 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
2506 stream ? "capture" : "playback", fe->dai_link->name);
2508 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2509 /* call bespoke trigger - FE takes care of all BE triggers */
2510 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
2511 fe->dai_link->name);
2513 err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
2515 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
2517 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
2518 fe->dai_link->name);
2520 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
2522 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
2525 err = dpcm_be_dai_hw_free(fe, stream);
2527 dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err);
2529 err = dpcm_be_dai_shutdown(fe, stream);
2531 dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err);
2533 /* run the stream event for each BE */
2534 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2539 static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2541 struct snd_pcm_substream *substream =
2542 snd_soc_dpcm_get_substream(fe, stream);
2543 struct snd_soc_dpcm *dpcm;
2544 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2547 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
2548 stream ? "capture" : "playback", fe->dai_link->name);
2550 /* Only start the BE if the FE is ready */
2551 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2552 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
2555 /* startup must always be called for new BEs */
2556 ret = dpcm_be_dai_startup(fe, stream);
2560 /* keep going if FE state is > open */
2561 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2564 ret = dpcm_be_dai_hw_params(fe, stream);
2568 /* keep going if FE state is > hw_params */
2569 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2573 ret = dpcm_be_dai_prepare(fe, stream);
2577 /* run the stream event for each BE */
2578 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2580 /* keep going if FE state is > prepare */
2581 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2582 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2585 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2586 /* call trigger on the frontend - FE takes care of all BE triggers */
2587 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
2588 fe->dai_link->name);
2590 ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
2592 dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret);
2596 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
2597 fe->dai_link->name);
2599 ret = dpcm_be_dai_trigger(fe, stream,
2600 SNDRV_PCM_TRIGGER_START);
2602 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2610 dpcm_be_dai_hw_free(fe, stream);
2612 dpcm_be_dai_shutdown(fe, stream);
2614 /* disconnect any non started BEs */
2615 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
2616 struct snd_soc_pcm_runtime *be = dpcm->be;
2617 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2618 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2624 static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
2628 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
2629 ret = dpcm_run_update_startup(fe, stream);
2631 dev_err(fe->dev, "ASoC: failed to startup some BEs\n");
2632 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2637 static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
2641 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
2642 ret = dpcm_run_update_shutdown(fe, stream);
2644 dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n");
2645 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2650 /* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2653 int soc_dpcm_runtime_update(struct snd_soc_card *card)
2655 struct snd_soc_pcm_runtime *fe;
2656 int old, new, paths;
2658 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2659 list_for_each_entry(fe, &card->rtd_list, list) {
2660 struct snd_soc_dapm_widget_list *list;
2662 /* make sure link is FE */
2663 if (!fe->dai_link->dynamic)
2666 /* only check active links */
2667 if (!fe->cpu_dai->active)
2670 /* DAPM sync will call this to update DSP paths */
2671 dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n",
2672 fe->dai_link->name);
2674 /* skip if FE doesn't have playback capability */
2675 if (!fe->cpu_dai->driver->playback.channels_min
2676 || !fe->codec_dai->driver->playback.channels_min)
2679 /* skip if FE isn't currently playing */
2680 if (!fe->cpu_dai->playback_active
2681 || !fe->codec_dai->playback_active)
2684 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
2686 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2687 fe->dai_link->name, "playback");
2688 mutex_unlock(&card->mutex);
2692 /* update any new playback paths */
2693 new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1);
2695 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2696 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2697 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2700 /* update any old playback paths */
2701 old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0);
2703 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2704 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2705 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2708 dpcm_path_put(&list);
2710 /* skip if FE doesn't have capture capability */
2711 if (!fe->cpu_dai->driver->capture.channels_min
2712 || !fe->codec_dai->driver->capture.channels_min)
2715 /* skip if FE isn't currently capturing */
2716 if (!fe->cpu_dai->capture_active
2717 || !fe->codec_dai->capture_active)
2720 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
2722 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2723 fe->dai_link->name, "capture");
2724 mutex_unlock(&card->mutex);
2728 /* update any new capture paths */
2729 new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1);
2731 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2732 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2733 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2736 /* update any old capture paths */
2737 old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0);
2739 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2740 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2741 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2744 dpcm_path_put(&list);
2747 mutex_unlock(&card->mutex);
2750 int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
2752 struct snd_soc_dpcm *dpcm;
2753 struct list_head *clients =
2754 &fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients;
2756 list_for_each_entry(dpcm, clients, list_be) {
2758 struct snd_soc_pcm_runtime *be = dpcm->be;
2761 if (be->dai_link->ignore_suspend)
2764 for (i = 0; i < be->num_codecs; i++) {
2765 struct snd_soc_dai *dai = be->codec_dais[i];
2766 struct snd_soc_dai_driver *drv = dai->driver;
2768 dev_dbg(be->dev, "ASoC: BE digital mute %s\n",
2769 be->dai_link->name);
2771 if (drv->ops && drv->ops->digital_mute &&
2772 dai->playback_active)
2773 drv->ops->digital_mute(dai, mute);
2780 static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
2782 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2783 struct snd_soc_dpcm *dpcm;
2784 struct snd_soc_dapm_widget_list *list;
2786 int stream = fe_substream->stream;
2788 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2789 fe->dpcm[stream].runtime = fe_substream->runtime;
2791 ret = dpcm_path_get(fe, stream, &list);
2793 mutex_unlock(&fe->card->mutex);
2795 } else if (ret == 0) {
2796 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
2797 fe->dai_link->name, stream ? "capture" : "playback");
2800 /* calculate valid and active FE <-> BE dpcms */
2801 dpcm_process_paths(fe, stream, &list, 1);
2803 ret = dpcm_fe_dai_startup(fe_substream);
2805 /* clean up all links */
2806 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
2807 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2809 dpcm_be_disconnect(fe, stream);
2810 fe->dpcm[stream].runtime = NULL;
2813 dpcm_clear_pending_state(fe, stream);
2814 dpcm_path_put(&list);
2815 mutex_unlock(&fe->card->mutex);
2819 static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
2821 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2822 struct snd_soc_dpcm *dpcm;
2823 int stream = fe_substream->stream, ret;
2825 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2826 ret = dpcm_fe_dai_shutdown(fe_substream);
2828 /* mark FE's links ready to prune */
2829 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
2830 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2832 dpcm_be_disconnect(fe, stream);
2834 fe->dpcm[stream].runtime = NULL;
2835 mutex_unlock(&fe->card->mutex);
2839 static void soc_pcm_private_free(struct snd_pcm *pcm)
2841 struct snd_soc_pcm_runtime *rtd = pcm->private_data;
2842 struct snd_soc_rtdcom_list *rtdcom;
2843 struct snd_soc_component *component;
2845 /* need to sync the delayed work before releasing resources */
2846 flush_delayed_work(&rtd->delayed_work);
2847 for_each_rtdcom(rtd, rtdcom) {
2848 component = rtdcom->component;
2850 if (component->pcm_free)
2851 component->pcm_free(component, pcm);
2855 static int soc_rtdcom_ack(struct snd_pcm_substream *substream)
2857 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2858 struct snd_soc_rtdcom_list *rtdcom;
2859 struct snd_soc_component *component;
2861 for_each_rtdcom(rtd, rtdcom) {
2862 component = rtdcom->component;
2864 if (!component->driver->ops ||
2865 !component->driver->ops->ack)
2868 /* FIXME. it returns 1st ask now */
2869 return component->driver->ops->ack(substream);
2875 static int soc_rtdcom_copy_user(struct snd_pcm_substream *substream, int channel,
2876 unsigned long pos, void __user *buf,
2877 unsigned long bytes)
2879 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2880 struct snd_soc_rtdcom_list *rtdcom;
2881 struct snd_soc_component *component;
2883 for_each_rtdcom(rtd, rtdcom) {
2884 component = rtdcom->component;
2886 if (!component->driver->ops ||
2887 !component->driver->ops->copy_user)
2890 /* FIXME. it returns 1st copy now */
2891 return component->driver->ops->copy_user(substream, channel,
2898 static int soc_rtdcom_copy_kernel(struct snd_pcm_substream *substream, int channel,
2899 unsigned long pos, void *buf, unsigned long bytes)
2901 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2902 struct snd_soc_rtdcom_list *rtdcom;
2903 struct snd_soc_component *component;
2905 for_each_rtdcom(rtd, rtdcom) {
2906 component = rtdcom->component;
2908 if (!component->driver->ops ||
2909 !component->driver->ops->copy_kernel)
2912 /* FIXME. it returns 1st copy now */
2913 return component->driver->ops->copy_kernel(substream, channel,
2920 static int soc_rtdcom_fill_silence(struct snd_pcm_substream *substream, int channel,
2921 unsigned long pos, unsigned long bytes)
2923 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2924 struct snd_soc_rtdcom_list *rtdcom;
2925 struct snd_soc_component *component;
2927 for_each_rtdcom(rtd, rtdcom) {
2928 component = rtdcom->component;
2930 if (!component->driver->ops ||
2931 !component->driver->ops->fill_silence)
2934 /* FIXME. it returns 1st silence now */
2935 return component->driver->ops->fill_silence(substream, channel,
2942 static struct page *soc_rtdcom_page(struct snd_pcm_substream *substream,
2943 unsigned long offset)
2945 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2946 struct snd_soc_rtdcom_list *rtdcom;
2947 struct snd_soc_component *component;
2950 for_each_rtdcom(rtd, rtdcom) {
2951 component = rtdcom->component;
2953 if (!component->driver->ops ||
2954 !component->driver->ops->page)
2957 /* FIXME. it returns 1st page now */
2958 page = component->driver->ops->page(substream, offset);
2966 static int soc_rtdcom_mmap(struct snd_pcm_substream *substream,
2967 struct vm_area_struct *vma)
2969 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2970 struct snd_soc_rtdcom_list *rtdcom;
2971 struct snd_soc_component *component;
2973 for_each_rtdcom(rtd, rtdcom) {
2974 component = rtdcom->component;
2976 if (!component->driver->ops ||
2977 !component->driver->ops->mmap)
2980 /* FIXME. it returns 1st mmap now */
2981 return component->driver->ops->mmap(substream, vma);
2987 /* create a new pcm */
2988 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
2990 struct snd_soc_platform *platform = rtd->platform;
2991 struct snd_soc_dai *codec_dai;
2992 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2993 struct snd_soc_component *component;
2994 struct snd_soc_rtdcom_list *rtdcom;
2995 struct snd_pcm *pcm;
2997 int ret = 0, playback = 0, capture = 0;
3000 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
3001 playback = rtd->dai_link->dpcm_playback;
3002 capture = rtd->dai_link->dpcm_capture;
3004 for (i = 0; i < rtd->num_codecs; i++) {
3005 codec_dai = rtd->codec_dais[i];
3006 if (codec_dai->driver->playback.channels_min)
3008 if (codec_dai->driver->capture.channels_min)
3012 capture = capture && cpu_dai->driver->capture.channels_min;
3013 playback = playback && cpu_dai->driver->playback.channels_min;
3016 if (rtd->dai_link->playback_only) {
3021 if (rtd->dai_link->capture_only) {
3026 /* create the PCM */
3027 if (rtd->dai_link->no_pcm) {
3028 snprintf(new_name, sizeof(new_name), "(%s)",
3029 rtd->dai_link->stream_name);
3031 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
3032 playback, capture, &pcm);
3034 if (rtd->dai_link->dynamic)
3035 snprintf(new_name, sizeof(new_name), "%s (*)",
3036 rtd->dai_link->stream_name);
3038 snprintf(new_name, sizeof(new_name), "%s %s-%d",
3039 rtd->dai_link->stream_name,
3040 (rtd->num_codecs > 1) ?
3041 "multicodec" : rtd->codec_dai->name, num);
3043 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
3047 dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n",
3048 rtd->dai_link->name);
3051 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
3053 /* DAPM dai link stream work */
3054 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
3056 pcm->nonatomic = rtd->dai_link->nonatomic;
3058 pcm->private_data = rtd;
3060 if (rtd->dai_link->no_pcm) {
3062 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
3064 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
3068 /* ASoC PCM operations */
3069 if (rtd->dai_link->dynamic) {
3070 rtd->ops.open = dpcm_fe_dai_open;
3071 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
3072 rtd->ops.prepare = dpcm_fe_dai_prepare;
3073 rtd->ops.trigger = dpcm_fe_dai_trigger;
3074 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
3075 rtd->ops.close = dpcm_fe_dai_close;
3076 rtd->ops.pointer = soc_pcm_pointer;
3077 rtd->ops.ioctl = soc_pcm_ioctl;
3079 rtd->ops.open = soc_pcm_open;
3080 rtd->ops.hw_params = soc_pcm_hw_params;
3081 rtd->ops.prepare = soc_pcm_prepare;
3082 rtd->ops.trigger = soc_pcm_trigger;
3083 rtd->ops.hw_free = soc_pcm_hw_free;
3084 rtd->ops.close = soc_pcm_close;
3085 rtd->ops.pointer = soc_pcm_pointer;
3086 rtd->ops.ioctl = soc_pcm_ioctl;
3089 for_each_rtdcom(rtd, rtdcom) {
3090 const struct snd_pcm_ops *ops = rtdcom->component->driver->ops;
3096 rtd->ops.ack = soc_rtdcom_ack;
3098 rtd->ops.copy_user = soc_rtdcom_copy_user;
3099 if (ops->copy_kernel)
3100 rtd->ops.copy_kernel = soc_rtdcom_copy_kernel;
3101 if (ops->fill_silence)
3102 rtd->ops.fill_silence = soc_rtdcom_fill_silence;
3104 rtd->ops.page = soc_rtdcom_page;
3106 rtd->ops.mmap = soc_rtdcom_mmap;
3110 if (platform && platform->driver->ops) {
3111 rtd->ops.ack = platform->driver->ops->ack;
3112 rtd->ops.copy_user = platform->driver->ops->copy_user;
3113 rtd->ops.copy_kernel = platform->driver->ops->copy_kernel;
3114 rtd->ops.fill_silence = platform->driver->ops->fill_silence;
3115 rtd->ops.page = platform->driver->ops->page;
3116 rtd->ops.mmap = platform->driver->ops->mmap;
3120 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
3123 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
3125 for_each_rtdcom(rtd, rtdcom) {
3126 component = rtdcom->component;
3128 if (!component->pcm_new)
3131 ret = component->pcm_new(component, rtd);
3133 dev_err(component->dev,
3134 "ASoC: pcm constructor failed: %d\n",
3140 pcm->private_free = soc_pcm_private_free;
3142 dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
3143 (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
3148 /* is the current PCM operation for this FE ? */
3149 int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
3151 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
3155 EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
3157 /* is the current PCM operation for this BE ? */
3158 int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
3159 struct snd_soc_pcm_runtime *be, int stream)
3161 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
3162 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
3163 be->dpcm[stream].runtime_update))
3167 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
3169 /* get the substream for this BE */
3170 struct snd_pcm_substream *
3171 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
3173 return be->pcm->streams[stream].substream;
3175 EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
3177 /* get the BE runtime state */
3178 enum snd_soc_dpcm_state
3179 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream)
3181 return be->dpcm[stream].state;
3183 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state);
3185 /* set the BE runtime state */
3186 void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be,
3187 int stream, enum snd_soc_dpcm_state state)
3189 be->dpcm[stream].state = state;
3191 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state);
3194 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
3195 * are not running, paused or suspended for the specified stream direction.
3197 int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
3198 struct snd_soc_pcm_runtime *be, int stream)
3200 struct snd_soc_dpcm *dpcm;
3203 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
3208 state = dpcm->fe->dpcm[stream].state;
3209 if (state == SND_SOC_DPCM_STATE_START ||
3210 state == SND_SOC_DPCM_STATE_PAUSED ||
3211 state == SND_SOC_DPCM_STATE_SUSPEND)
3215 /* it's safe to free/stop this BE DAI */
3218 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
3221 * We can only change hw params a BE DAI if any of it's FE are not prepared,
3222 * running, paused or suspended for the specified stream direction.
3224 int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
3225 struct snd_soc_pcm_runtime *be, int stream)
3227 struct snd_soc_dpcm *dpcm;
3230 list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
3235 state = dpcm->fe->dpcm[stream].state;
3236 if (state == SND_SOC_DPCM_STATE_START ||
3237 state == SND_SOC_DPCM_STATE_PAUSED ||
3238 state == SND_SOC_DPCM_STATE_SUSPEND ||
3239 state == SND_SOC_DPCM_STATE_PREPARE)
3243 /* it's safe to change hw_params */
3246 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
3248 #ifdef CONFIG_DEBUG_FS
3249 static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
3252 case SND_SOC_DPCM_STATE_NEW:
3254 case SND_SOC_DPCM_STATE_OPEN:
3256 case SND_SOC_DPCM_STATE_HW_PARAMS:
3258 case SND_SOC_DPCM_STATE_PREPARE:
3260 case SND_SOC_DPCM_STATE_START:
3262 case SND_SOC_DPCM_STATE_STOP:
3264 case SND_SOC_DPCM_STATE_SUSPEND:
3266 case SND_SOC_DPCM_STATE_PAUSED:
3268 case SND_SOC_DPCM_STATE_HW_FREE:
3270 case SND_SOC_DPCM_STATE_CLOSE:
3277 static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
3278 int stream, char *buf, size_t size)
3280 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
3281 struct snd_soc_dpcm *dpcm;
3285 offset += snprintf(buf + offset, size - offset,
3286 "[%s - %s]\n", fe->dai_link->name,
3287 stream ? "Capture" : "Playback");
3289 offset += snprintf(buf + offset, size - offset, "State: %s\n",
3290 dpcm_state_string(fe->dpcm[stream].state));
3292 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3293 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3294 offset += snprintf(buf + offset, size - offset,
3296 "Format = %s, Channels = %d, Rate = %d\n",
3297 snd_pcm_format_name(params_format(params)),
3298 params_channels(params),
3299 params_rate(params));
3302 offset += snprintf(buf + offset, size - offset, "Backends:\n");
3304 if (list_empty(&fe->dpcm[stream].be_clients)) {
3305 offset += snprintf(buf + offset, size - offset,
3306 " No active DSP links\n");
3310 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
3311 struct snd_soc_pcm_runtime *be = dpcm->be;
3312 params = &dpcm->hw_params;
3314 offset += snprintf(buf + offset, size - offset,
3315 "- %s\n", be->dai_link->name);
3317 offset += snprintf(buf + offset, size - offset,
3319 dpcm_state_string(be->dpcm[stream].state));
3321 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3322 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3323 offset += snprintf(buf + offset, size - offset,
3324 " Hardware Params: "
3325 "Format = %s, Channels = %d, Rate = %d\n",
3326 snd_pcm_format_name(params_format(params)),
3327 params_channels(params),
3328 params_rate(params));
3335 static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
3336 size_t count, loff_t *ppos)
3338 struct snd_soc_pcm_runtime *fe = file->private_data;
3339 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
3342 buf = kmalloc(out_count, GFP_KERNEL);
3346 if (fe->cpu_dai->driver->playback.channels_min)
3347 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
3348 buf + offset, out_count - offset);
3350 if (fe->cpu_dai->driver->capture.channels_min)
3351 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
3352 buf + offset, out_count - offset);
3354 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
3360 static const struct file_operations dpcm_state_fops = {
3361 .open = simple_open,
3362 .read = dpcm_state_read_file,
3363 .llseek = default_llseek,
3366 void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
3371 if (!rtd->card->debugfs_card_root)
3374 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
3375 rtd->card->debugfs_card_root);
3376 if (!rtd->debugfs_dpcm_root) {
3378 "ASoC: Failed to create dpcm debugfs directory %s\n",
3379 rtd->dai_link->name);
3383 debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
3384 rtd, &dpcm_state_fops);