1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-pcm.c -- ALSA SoC PCM
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Copyright 2005 Openedhand Ltd.
7 // Copyright (C) 2010 Slimlogic Ltd.
8 // Copyright (C) 2010 Texas Instruments Inc.
10 // Authors: Liam Girdwood <lrg@ti.com>
11 // Mark Brown <broonie@opensource.wolfsonmicro.com>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/delay.h>
16 #include <linux/pinctrl/consumer.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/slab.h>
19 #include <linux/workqueue.h>
20 #include <linux/export.h>
21 #include <linux/debugfs.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dpcm.h>
27 #include <sound/initval.h>
29 #define DPCM_MAX_BE_USERS 8
32 * snd_soc_dai_stream_valid() - check if a DAI supports the given stream
34 * Returns true if the DAI supports the indicated stream type.
36 static bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream)
38 struct snd_soc_pcm_stream *codec_stream;
40 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
41 codec_stream = &dai->driver->playback;
43 codec_stream = &dai->driver->capture;
45 /* If the codec specifies any rate at all, it supports the stream. */
46 return codec_stream->rates;
50 * snd_soc_runtime_activate() - Increment active count for PCM runtime components
51 * @rtd: ASoC PCM runtime that is activated
52 * @stream: Direction of the PCM stream
54 * Increments the active count for all the DAIs and components attached to a PCM
55 * runtime. Should typically be called when a stream is opened.
57 * Must be called with the rtd->pcm_mutex being held
59 void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream)
61 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
62 struct snd_soc_dai *codec_dai;
65 lockdep_assert_held(&rtd->pcm_mutex);
67 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
68 cpu_dai->playback_active++;
69 for_each_rtd_codec_dai(rtd, i, codec_dai)
70 codec_dai->playback_active++;
72 cpu_dai->capture_active++;
73 for_each_rtd_codec_dai(rtd, i, codec_dai)
74 codec_dai->capture_active++;
78 cpu_dai->component->active++;
79 for_each_rtd_codec_dai(rtd, i, codec_dai) {
81 codec_dai->component->active++;
86 * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
87 * @rtd: ASoC PCM runtime that is deactivated
88 * @stream: Direction of the PCM stream
90 * Decrements the active count for all the DAIs and components attached to a PCM
91 * runtime. Should typically be called when a stream is closed.
93 * Must be called with the rtd->pcm_mutex being held
95 void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream)
97 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
98 struct snd_soc_dai *codec_dai;
101 lockdep_assert_held(&rtd->pcm_mutex);
103 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
104 cpu_dai->playback_active--;
105 for_each_rtd_codec_dai(rtd, i, codec_dai)
106 codec_dai->playback_active--;
108 cpu_dai->capture_active--;
109 for_each_rtd_codec_dai(rtd, i, codec_dai)
110 codec_dai->capture_active--;
114 cpu_dai->component->active--;
115 for_each_rtd_codec_dai(rtd, i, codec_dai) {
116 codec_dai->component->active--;
122 * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
123 * @rtd: The ASoC PCM runtime that should be checked.
125 * This function checks whether the power down delay should be ignored for a
126 * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
127 * been configured to ignore the delay, or if none of the components benefits
128 * from having the delay.
130 bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
132 struct snd_soc_rtdcom_list *rtdcom;
133 struct snd_soc_component *component;
136 if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
139 for_each_rtdcom(rtd, rtdcom) {
140 component = rtdcom->component;
142 ignore &= !component->driver->use_pmdown_time;
149 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
150 * @substream: the pcm substream
151 * @hw: the hardware parameters
153 * Sets the substream runtime hardware parameters.
155 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
156 const struct snd_pcm_hardware *hw)
158 struct snd_pcm_runtime *runtime = substream->runtime;
159 runtime->hw.info = hw->info;
160 runtime->hw.formats = hw->formats;
161 runtime->hw.period_bytes_min = hw->period_bytes_min;
162 runtime->hw.period_bytes_max = hw->period_bytes_max;
163 runtime->hw.periods_min = hw->periods_min;
164 runtime->hw.periods_max = hw->periods_max;
165 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
166 runtime->hw.fifo_size = hw->fifo_size;
169 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
171 /* DPCM stream event, send event to FE and all active BEs. */
172 int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
175 struct snd_soc_dpcm *dpcm;
177 for_each_dpcm_be(fe, dir, dpcm) {
179 struct snd_soc_pcm_runtime *be = dpcm->be;
181 dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
182 be->dai_link->name, event, dir);
184 if ((event == SND_SOC_DAPM_STREAM_STOP) &&
185 (be->dpcm[dir].users >= 1))
188 snd_soc_dapm_stream_event(be, dir, event);
191 snd_soc_dapm_stream_event(fe, dir, event);
196 static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
197 struct snd_soc_dai *soc_dai)
199 struct snd_soc_pcm_runtime *rtd = substream->private_data;
202 if (soc_dai->rate && (soc_dai->driver->symmetric_rates ||
203 rtd->dai_link->symmetric_rates)) {
204 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n",
207 ret = snd_pcm_hw_constraint_single(substream->runtime,
208 SNDRV_PCM_HW_PARAM_RATE,
211 dev_err(soc_dai->dev,
212 "ASoC: Unable to apply rate constraint: %d\n",
218 if (soc_dai->channels && (soc_dai->driver->symmetric_channels ||
219 rtd->dai_link->symmetric_channels)) {
220 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n",
223 ret = snd_pcm_hw_constraint_single(substream->runtime,
224 SNDRV_PCM_HW_PARAM_CHANNELS,
227 dev_err(soc_dai->dev,
228 "ASoC: Unable to apply channel symmetry constraint: %d\n",
234 if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits ||
235 rtd->dai_link->symmetric_samplebits)) {
236 dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n",
237 soc_dai->sample_bits);
239 ret = snd_pcm_hw_constraint_single(substream->runtime,
240 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
241 soc_dai->sample_bits);
243 dev_err(soc_dai->dev,
244 "ASoC: Unable to apply sample bits symmetry constraint: %d\n",
253 static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
254 struct snd_pcm_hw_params *params)
256 struct snd_soc_pcm_runtime *rtd = substream->private_data;
257 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
258 struct snd_soc_dai *codec_dai;
259 unsigned int rate, channels, sample_bits, symmetry, i;
261 rate = params_rate(params);
262 channels = params_channels(params);
263 sample_bits = snd_pcm_format_physical_width(params_format(params));
265 /* reject unmatched parameters when applying symmetry */
266 symmetry = cpu_dai->driver->symmetric_rates ||
267 rtd->dai_link->symmetric_rates;
269 for_each_rtd_codec_dai(rtd, i, codec_dai)
270 symmetry |= codec_dai->driver->symmetric_rates;
272 if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) {
273 dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n",
274 cpu_dai->rate, rate);
278 symmetry = cpu_dai->driver->symmetric_channels ||
279 rtd->dai_link->symmetric_channels;
281 for_each_rtd_codec_dai(rtd, i, codec_dai)
282 symmetry |= codec_dai->driver->symmetric_channels;
284 if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) {
285 dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n",
286 cpu_dai->channels, channels);
290 symmetry = cpu_dai->driver->symmetric_samplebits ||
291 rtd->dai_link->symmetric_samplebits;
293 for_each_rtd_codec_dai(rtd, i, codec_dai)
294 symmetry |= codec_dai->driver->symmetric_samplebits;
296 if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) {
297 dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n",
298 cpu_dai->sample_bits, sample_bits);
305 static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream)
307 struct snd_soc_pcm_runtime *rtd = substream->private_data;
308 struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver;
309 struct snd_soc_dai_link *link = rtd->dai_link;
310 struct snd_soc_dai *codec_dai;
311 unsigned int symmetry, i;
313 symmetry = cpu_driver->symmetric_rates || link->symmetric_rates ||
314 cpu_driver->symmetric_channels || link->symmetric_channels ||
315 cpu_driver->symmetric_samplebits || link->symmetric_samplebits;
317 for_each_rtd_codec_dai(rtd, i, codec_dai)
318 symmetry = symmetry ||
319 codec_dai->driver->symmetric_rates ||
320 codec_dai->driver->symmetric_channels ||
321 codec_dai->driver->symmetric_samplebits;
326 static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
328 struct snd_soc_pcm_runtime *rtd = substream->private_data;
334 ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
336 dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
340 static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
342 struct snd_soc_pcm_runtime *rtd = substream->private_data;
343 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
344 struct snd_soc_dai *codec_dai;
346 unsigned int bits = 0, cpu_bits;
348 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
349 for_each_rtd_codec_dai(rtd, i, codec_dai) {
350 if (codec_dai->driver->playback.sig_bits == 0) {
354 bits = max(codec_dai->driver->playback.sig_bits, bits);
356 cpu_bits = cpu_dai->driver->playback.sig_bits;
358 for_each_rtd_codec_dai(rtd, i, codec_dai) {
359 if (codec_dai->driver->capture.sig_bits == 0) {
363 bits = max(codec_dai->driver->capture.sig_bits, bits);
365 cpu_bits = cpu_dai->driver->capture.sig_bits;
368 soc_pcm_set_msb(substream, bits);
369 soc_pcm_set_msb(substream, cpu_bits);
372 static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
374 struct snd_pcm_runtime *runtime = substream->runtime;
375 struct snd_pcm_hardware *hw = &runtime->hw;
376 struct snd_soc_pcm_runtime *rtd = substream->private_data;
377 struct snd_soc_dai *codec_dai;
378 struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver;
379 struct snd_soc_dai_driver *codec_dai_drv;
380 struct snd_soc_pcm_stream *codec_stream;
381 struct snd_soc_pcm_stream *cpu_stream;
382 unsigned int chan_min = 0, chan_max = UINT_MAX;
383 unsigned int rate_min = 0, rate_max = UINT_MAX;
384 unsigned int rates = UINT_MAX;
385 u64 formats = ULLONG_MAX;
388 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
389 cpu_stream = &cpu_dai_drv->playback;
391 cpu_stream = &cpu_dai_drv->capture;
393 /* first calculate min/max only for CODECs in the DAI link */
394 for_each_rtd_codec_dai(rtd, i, codec_dai) {
397 * Skip CODECs which don't support the current stream type.
398 * Otherwise, since the rate, channel, and format values will
399 * zero in that case, we would have no usable settings left,
400 * causing the resulting setup to fail.
401 * At least one CODEC should match, otherwise we should have
402 * bailed out on a higher level, since there would be no
403 * CODEC to support the transfer direction in that case.
405 if (!snd_soc_dai_stream_valid(codec_dai,
409 codec_dai_drv = codec_dai->driver;
410 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
411 codec_stream = &codec_dai_drv->playback;
413 codec_stream = &codec_dai_drv->capture;
414 chan_min = max(chan_min, codec_stream->channels_min);
415 chan_max = min(chan_max, codec_stream->channels_max);
416 rate_min = max(rate_min, codec_stream->rate_min);
417 rate_max = min_not_zero(rate_max, codec_stream->rate_max);
418 formats &= codec_stream->formats;
419 rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates);
423 * chan min/max cannot be enforced if there are multiple CODEC DAIs
424 * connected to a single CPU DAI, use CPU DAI's directly and let
425 * channel allocation be fixed up later
427 if (rtd->num_codecs > 1) {
428 chan_min = cpu_stream->channels_min;
429 chan_max = cpu_stream->channels_max;
432 hw->channels_min = max(chan_min, cpu_stream->channels_min);
433 hw->channels_max = min(chan_max, cpu_stream->channels_max);
435 hw->formats &= formats & cpu_stream->formats;
437 hw->formats = formats & cpu_stream->formats;
438 hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
440 snd_pcm_limit_hw_rates(runtime);
442 hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
443 hw->rate_min = max(hw->rate_min, rate_min);
444 hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max);
445 hw->rate_max = min_not_zero(hw->rate_max, rate_max);
448 static int soc_pcm_components_close(struct snd_pcm_substream *substream,
449 struct snd_soc_component *last)
451 struct snd_soc_pcm_runtime *rtd = substream->private_data;
452 struct snd_soc_rtdcom_list *rtdcom;
453 struct snd_soc_component *component;
455 for_each_rtdcom(rtd, rtdcom) {
456 component = rtdcom->component;
458 if (component == last)
461 if (!component->driver->ops ||
462 !component->driver->ops->close)
465 component->driver->ops->close(substream);
472 * Called by ALSA when a PCM substream is opened, the runtime->hw record is
473 * then initialized and any private data can be allocated. This also calls
474 * startup for the cpu DAI, component, machine and codec DAI.
476 static int soc_pcm_open(struct snd_pcm_substream *substream)
478 struct snd_soc_pcm_runtime *rtd = substream->private_data;
479 struct snd_pcm_runtime *runtime = substream->runtime;
480 struct snd_soc_component *component;
481 struct snd_soc_rtdcom_list *rtdcom;
482 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
483 struct snd_soc_dai *codec_dai;
484 const char *codec_dai_name = "multicodec";
487 pinctrl_pm_select_default_state(cpu_dai->dev);
488 for_each_rtd_codec_dai(rtd, i, codec_dai)
489 pinctrl_pm_select_default_state(codec_dai->dev);
491 for_each_rtdcom(rtd, rtdcom) {
492 component = rtdcom->component;
494 pm_runtime_get_sync(component->dev);
497 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
499 /* startup the audio subsystem */
500 if (cpu_dai->driver->ops->startup) {
501 ret = cpu_dai->driver->ops->startup(substream, cpu_dai);
503 dev_err(cpu_dai->dev, "ASoC: can't open interface"
504 " %s: %d\n", cpu_dai->name, ret);
509 for_each_rtdcom(rtd, rtdcom) {
510 component = rtdcom->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);
526 for_each_rtd_codec_dai(rtd, i, codec_dai) {
527 if (codec_dai->driver->ops->startup) {
528 ret = codec_dai->driver->ops->startup(substream,
531 dev_err(codec_dai->dev,
532 "ASoC: can't open codec %s: %d\n",
533 codec_dai->name, ret);
538 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
539 codec_dai->tx_mask = 0;
541 codec_dai->rx_mask = 0;
544 if (rtd->dai_link->ops->startup) {
545 ret = rtd->dai_link->ops->startup(substream);
547 pr_err("ASoC: %s startup failed: %d\n",
548 rtd->dai_link->name, ret);
553 /* Dynamic PCM DAI links compat checks use dynamic capabilities */
554 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm)
557 /* Check that the codec and cpu DAIs are compatible */
558 soc_pcm_init_runtime_hw(substream);
560 if (rtd->num_codecs == 1)
561 codec_dai_name = rtd->codec_dai->name;
563 if (soc_pcm_has_symmetry(substream))
564 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
567 if (!runtime->hw.rates) {
568 printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
569 codec_dai_name, cpu_dai->name);
572 if (!runtime->hw.formats) {
573 printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n",
574 codec_dai_name, cpu_dai->name);
577 if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
578 runtime->hw.channels_min > runtime->hw.channels_max) {
579 printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n",
580 codec_dai_name, cpu_dai->name);
584 soc_pcm_apply_msb(substream);
586 /* Symmetry only applies if we've already got an active stream. */
587 if (cpu_dai->active) {
588 ret = soc_pcm_apply_symmetry(substream, cpu_dai);
593 for_each_rtd_codec_dai(rtd, i, codec_dai) {
594 if (codec_dai->active) {
595 ret = soc_pcm_apply_symmetry(substream, codec_dai);
601 pr_debug("ASoC: %s <-> %s info:\n",
602 codec_dai_name, cpu_dai->name);
603 pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates);
604 pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min,
605 runtime->hw.channels_max);
606 pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min,
607 runtime->hw.rate_max);
611 snd_soc_runtime_activate(rtd, substream->stream);
613 mutex_unlock(&rtd->pcm_mutex);
617 if (rtd->dai_link->ops->shutdown)
618 rtd->dai_link->ops->shutdown(substream);
624 for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) {
625 if (codec_dai->driver->ops->shutdown)
626 codec_dai->driver->ops->shutdown(substream, codec_dai);
630 soc_pcm_components_close(substream, component);
632 if (cpu_dai->driver->ops->shutdown)
633 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
635 mutex_unlock(&rtd->pcm_mutex);
637 for_each_rtdcom(rtd, rtdcom) {
638 component = rtdcom->component;
640 pm_runtime_mark_last_busy(component->dev);
641 pm_runtime_put_autosuspend(component->dev);
644 for_each_rtd_codec_dai(rtd, i, codec_dai) {
645 if (!codec_dai->active)
646 pinctrl_pm_select_sleep_state(codec_dai->dev);
648 if (!cpu_dai->active)
649 pinctrl_pm_select_sleep_state(cpu_dai->dev);
655 * Power down the audio subsystem pmdown_time msecs after close is called.
656 * This is to ensure there are no pops or clicks in between any music tracks
657 * due to DAPM power cycling.
659 static void close_delayed_work(struct work_struct *work)
661 struct snd_soc_pcm_runtime *rtd =
662 container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
663 struct snd_soc_dai *codec_dai = rtd->codec_dais[0];
665 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
667 dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n",
668 codec_dai->driver->playback.stream_name,
669 codec_dai->playback_active ? "active" : "inactive",
670 rtd->pop_wait ? "yes" : "no");
672 /* are we waiting on this codec DAI stream */
673 if (rtd->pop_wait == 1) {
675 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
676 SND_SOC_DAPM_STREAM_STOP);
679 mutex_unlock(&rtd->pcm_mutex);
683 * Called by ALSA when a PCM substream is closed. Private data can be
684 * freed here. The cpu DAI, codec DAI, machine and components are also
687 static int soc_pcm_close(struct snd_pcm_substream *substream)
689 struct snd_soc_pcm_runtime *rtd = substream->private_data;
690 struct snd_soc_component *component;
691 struct snd_soc_rtdcom_list *rtdcom;
692 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
693 struct snd_soc_dai *codec_dai;
696 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
698 snd_soc_runtime_deactivate(rtd, substream->stream);
700 /* clear the corresponding DAIs rate when inactive */
701 if (!cpu_dai->active)
704 for_each_rtd_codec_dai(rtd, i, codec_dai) {
705 if (!codec_dai->active)
709 snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream);
711 if (cpu_dai->driver->ops->shutdown)
712 cpu_dai->driver->ops->shutdown(substream, cpu_dai);
714 for_each_rtd_codec_dai(rtd, i, codec_dai) {
715 if (codec_dai->driver->ops->shutdown)
716 codec_dai->driver->ops->shutdown(substream, codec_dai);
719 if (rtd->dai_link->ops->shutdown)
720 rtd->dai_link->ops->shutdown(substream);
722 soc_pcm_components_close(substream, NULL);
724 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
725 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
726 /* powered down playback stream now */
727 snd_soc_dapm_stream_event(rtd,
728 SNDRV_PCM_STREAM_PLAYBACK,
729 SND_SOC_DAPM_STREAM_STOP);
731 /* start delayed pop wq here for playback streams */
733 queue_delayed_work(system_power_efficient_wq,
735 msecs_to_jiffies(rtd->pmdown_time));
738 /* capture streams can be powered down now */
739 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
740 SND_SOC_DAPM_STREAM_STOP);
743 mutex_unlock(&rtd->pcm_mutex);
745 for_each_rtdcom(rtd, rtdcom) {
746 component = rtdcom->component;
748 pm_runtime_mark_last_busy(component->dev);
749 pm_runtime_put_autosuspend(component->dev);
752 for_each_rtd_codec_dai(rtd, i, codec_dai) {
753 if (!codec_dai->active)
754 pinctrl_pm_select_sleep_state(codec_dai->dev);
756 if (!cpu_dai->active)
757 pinctrl_pm_select_sleep_state(cpu_dai->dev);
763 * Called by ALSA when the PCM substream is prepared, can set format, sample
764 * rate, etc. This function is non atomic and can be called multiple times,
765 * it can refer to the runtime info.
767 static int soc_pcm_prepare(struct snd_pcm_substream *substream)
769 struct snd_soc_pcm_runtime *rtd = substream->private_data;
770 struct snd_soc_component *component;
771 struct snd_soc_rtdcom_list *rtdcom;
772 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
773 struct snd_soc_dai *codec_dai;
776 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
778 if (rtd->dai_link->ops->prepare) {
779 ret = rtd->dai_link->ops->prepare(substream);
781 dev_err(rtd->card->dev, "ASoC: machine prepare error:"
787 for_each_rtdcom(rtd, rtdcom) {
788 component = rtdcom->component;
790 if (!component->driver->ops ||
791 !component->driver->ops->prepare)
794 ret = component->driver->ops->prepare(substream);
796 dev_err(component->dev,
797 "ASoC: platform prepare error: %d\n", ret);
802 for_each_rtd_codec_dai(rtd, i, codec_dai) {
803 if (codec_dai->driver->ops->prepare) {
804 ret = codec_dai->driver->ops->prepare(substream,
807 dev_err(codec_dai->dev,
808 "ASoC: codec DAI prepare error: %d\n",
815 if (cpu_dai->driver->ops->prepare) {
816 ret = cpu_dai->driver->ops->prepare(substream, cpu_dai);
818 dev_err(cpu_dai->dev,
819 "ASoC: cpu DAI prepare error: %d\n", ret);
824 /* cancel any delayed stream shutdown that is pending */
825 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
828 cancel_delayed_work(&rtd->delayed_work);
831 snd_soc_dapm_stream_event(rtd, substream->stream,
832 SND_SOC_DAPM_STREAM_START);
834 for_each_rtd_codec_dai(rtd, i, codec_dai)
835 snd_soc_dai_digital_mute(codec_dai, 0,
837 snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream);
840 mutex_unlock(&rtd->pcm_mutex);
844 static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params,
847 struct snd_interval *interval;
848 int channels = hweight_long(mask);
850 interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
851 interval->min = channels;
852 interval->max = channels;
855 int soc_dai_hw_params(struct snd_pcm_substream *substream,
856 struct snd_pcm_hw_params *params,
857 struct snd_soc_dai *dai)
859 struct snd_soc_pcm_runtime *rtd = substream->private_data;
862 /* perform any topology hw_params fixups before DAI */
863 if (rtd->dai_link->be_hw_params_fixup) {
864 ret = rtd->dai_link->be_hw_params_fixup(rtd, params);
867 "ASoC: hw_params topology fixup failed %d\n",
873 if (dai->driver->ops->hw_params) {
874 ret = dai->driver->ops->hw_params(substream, params, dai);
876 dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n",
885 static int soc_pcm_components_hw_free(struct snd_pcm_substream *substream,
886 struct snd_soc_component *last)
888 struct snd_soc_pcm_runtime *rtd = substream->private_data;
889 struct snd_soc_rtdcom_list *rtdcom;
890 struct snd_soc_component *component;
892 for_each_rtdcom(rtd, rtdcom) {
893 component = rtdcom->component;
895 if (component == last)
898 if (!component->driver->ops ||
899 !component->driver->ops->hw_free)
902 component->driver->ops->hw_free(substream);
909 * Called by ALSA when the hardware params are set by application. This
910 * function can also be called multiple times and can allocate buffers
911 * (using snd_pcm_lib_* ). It's non-atomic.
913 static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
914 struct snd_pcm_hw_params *params)
916 struct snd_soc_pcm_runtime *rtd = substream->private_data;
917 struct snd_soc_component *component;
918 struct snd_soc_rtdcom_list *rtdcom;
919 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
920 struct snd_soc_dai *codec_dai;
923 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
924 if (rtd->dai_link->ops->hw_params) {
925 ret = rtd->dai_link->ops->hw_params(substream, params);
927 dev_err(rtd->card->dev, "ASoC: machine hw_params"
928 " failed: %d\n", ret);
933 for_each_rtd_codec_dai(rtd, i, codec_dai) {
934 struct snd_pcm_hw_params codec_params;
937 * Skip CODECs which don't support the current stream type,
938 * the idea being that if a CODEC is not used for the currently
939 * set up transfer direction, it should not need to be
940 * configured, especially since the configuration used might
941 * not even be supported by that CODEC. There may be cases
942 * however where a CODEC needs to be set up although it is
943 * actually not being used for the transfer, e.g. if a
944 * capture-only CODEC is acting as an LRCLK and/or BCLK master
945 * for the DAI link including a playback-only CODEC.
946 * If this becomes necessary, we will have to augment the
947 * machine driver setup with information on how to act, so
948 * we can do the right thing here.
950 if (!snd_soc_dai_stream_valid(codec_dai, substream->stream))
953 /* copy params for each codec */
954 codec_params = *params;
956 /* fixup params based on TDM slot masks */
957 if (codec_dai->tx_mask)
958 soc_pcm_codec_params_fixup(&codec_params,
960 if (codec_dai->rx_mask)
961 soc_pcm_codec_params_fixup(&codec_params,
964 ret = soc_dai_hw_params(substream, &codec_params, codec_dai);
968 codec_dai->rate = params_rate(&codec_params);
969 codec_dai->channels = params_channels(&codec_params);
970 codec_dai->sample_bits = snd_pcm_format_physical_width(
971 params_format(&codec_params));
973 snd_soc_dapm_update_dai(substream, &codec_params, codec_dai);
976 ret = soc_dai_hw_params(substream, params, cpu_dai);
980 for_each_rtdcom(rtd, rtdcom) {
981 component = rtdcom->component;
983 if (!component->driver->ops ||
984 !component->driver->ops->hw_params)
987 ret = component->driver->ops->hw_params(substream, params);
989 dev_err(component->dev,
990 "ASoC: %s hw params failed: %d\n",
991 component->name, ret);
997 /* store the parameters for each DAIs */
998 cpu_dai->rate = params_rate(params);
999 cpu_dai->channels = params_channels(params);
1000 cpu_dai->sample_bits =
1001 snd_pcm_format_physical_width(params_format(params));
1003 snd_soc_dapm_update_dai(substream, params, cpu_dai);
1005 ret = soc_pcm_params_symmetry(substream, params);
1009 mutex_unlock(&rtd->pcm_mutex);
1013 soc_pcm_components_hw_free(substream, component);
1015 if (cpu_dai->driver->ops->hw_free)
1016 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
1019 i = rtd->num_codecs;
1022 for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) {
1023 if (codec_dai->driver->ops->hw_free)
1024 codec_dai->driver->ops->hw_free(substream, codec_dai);
1025 codec_dai->rate = 0;
1028 if (rtd->dai_link->ops->hw_free)
1029 rtd->dai_link->ops->hw_free(substream);
1031 mutex_unlock(&rtd->pcm_mutex);
1036 * Frees resources allocated by hw_params, can be called multiple times
1038 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
1040 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1041 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1042 struct snd_soc_dai *codec_dai;
1043 bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
1046 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
1048 /* clear the corresponding DAIs parameters when going to be inactive */
1049 if (cpu_dai->active == 1) {
1051 cpu_dai->channels = 0;
1052 cpu_dai->sample_bits = 0;
1055 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1056 if (codec_dai->active == 1) {
1057 codec_dai->rate = 0;
1058 codec_dai->channels = 0;
1059 codec_dai->sample_bits = 0;
1063 /* apply codec digital mute */
1064 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1065 if ((playback && codec_dai->playback_active == 1) ||
1066 (!playback && codec_dai->capture_active == 1))
1067 snd_soc_dai_digital_mute(codec_dai, 1,
1071 /* free any machine hw params */
1072 if (rtd->dai_link->ops->hw_free)
1073 rtd->dai_link->ops->hw_free(substream);
1075 /* free any component resources */
1076 soc_pcm_components_hw_free(substream, NULL);
1078 /* now free hw params for the DAIs */
1079 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1080 if (codec_dai->driver->ops->hw_free)
1081 codec_dai->driver->ops->hw_free(substream, codec_dai);
1084 if (cpu_dai->driver->ops->hw_free)
1085 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
1087 mutex_unlock(&rtd->pcm_mutex);
1091 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1093 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1094 struct snd_soc_component *component;
1095 struct snd_soc_rtdcom_list *rtdcom;
1096 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1097 struct snd_soc_dai *codec_dai;
1100 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1101 if (codec_dai->driver->ops->trigger) {
1102 ret = codec_dai->driver->ops->trigger(substream,
1109 for_each_rtdcom(rtd, rtdcom) {
1110 component = rtdcom->component;
1112 if (!component->driver->ops ||
1113 !component->driver->ops->trigger)
1116 ret = component->driver->ops->trigger(substream, cmd);
1121 if (cpu_dai->driver->ops->trigger) {
1122 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
1127 if (rtd->dai_link->ops->trigger) {
1128 ret = rtd->dai_link->ops->trigger(substream, cmd);
1136 static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
1139 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1140 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1141 struct snd_soc_dai *codec_dai;
1144 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1145 if (codec_dai->driver->ops->bespoke_trigger) {
1146 ret = codec_dai->driver->ops->bespoke_trigger(substream,
1153 if (cpu_dai->driver->ops->bespoke_trigger) {
1154 ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai);
1161 * soc level wrapper for pointer callback
1162 * If cpu_dai, codec_dai, component driver has the delay callback, then
1163 * the runtime->delay will be updated accordingly.
1165 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1167 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1168 struct snd_soc_component *component;
1169 struct snd_soc_rtdcom_list *rtdcom;
1170 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1171 struct snd_soc_dai *codec_dai;
1172 struct snd_pcm_runtime *runtime = substream->runtime;
1173 snd_pcm_uframes_t offset = 0;
1174 snd_pcm_sframes_t delay = 0;
1175 snd_pcm_sframes_t codec_delay = 0;
1178 /* clearing the previous total delay */
1181 for_each_rtdcom(rtd, rtdcom) {
1182 component = rtdcom->component;
1184 if (!component->driver->ops ||
1185 !component->driver->ops->pointer)
1188 /* FIXME: use 1st pointer */
1189 offset = component->driver->ops->pointer(substream);
1192 /* base delay if assigned in pointer callback */
1193 delay = runtime->delay;
1195 if (cpu_dai->driver->ops->delay)
1196 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
1198 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1199 if (codec_dai->driver->ops->delay)
1200 codec_delay = max(codec_delay,
1201 codec_dai->driver->ops->delay(substream,
1204 delay += codec_delay;
1206 runtime->delay = delay;
1211 /* connect a FE and BE */
1212 static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
1213 struct snd_soc_pcm_runtime *be, int stream)
1215 struct snd_soc_dpcm *dpcm;
1217 /* only add new dpcms */
1218 for_each_dpcm_be(fe, stream, dpcm) {
1219 if (dpcm->be == be && dpcm->fe == fe)
1223 dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
1229 be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
1230 dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW;
1231 list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients);
1232 list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);
1234 dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n",
1235 stream ? "capture" : "playback", fe->dai_link->name,
1236 stream ? "<-" : "->", be->dai_link->name);
1238 #ifdef CONFIG_DEBUG_FS
1239 if (fe->debugfs_dpcm_root)
1240 dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
1241 fe->debugfs_dpcm_root, &dpcm->state);
1246 /* reparent a BE onto another FE */
1247 static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1248 struct snd_soc_pcm_runtime *be, int stream)
1250 struct snd_soc_dpcm *dpcm;
1251 struct snd_pcm_substream *fe_substream, *be_substream;
1253 /* reparent if BE is connected to other FEs */
1254 if (!be->dpcm[stream].users)
1257 be_substream = snd_soc_dpcm_get_substream(be, stream);
1259 for_each_dpcm_fe(be, stream, dpcm) {
1263 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
1264 stream ? "capture" : "playback",
1265 dpcm->fe->dai_link->name,
1266 stream ? "<-" : "->", dpcm->be->dai_link->name);
1268 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1269 be_substream->runtime = fe_substream->runtime;
1274 /* disconnect a BE and FE */
1275 void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
1277 struct snd_soc_dpcm *dpcm, *d;
1279 for_each_dpcm_be_safe(fe, stream, dpcm, d) {
1280 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
1281 stream ? "capture" : "playback",
1282 dpcm->be->dai_link->name);
1284 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1287 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
1288 stream ? "capture" : "playback", fe->dai_link->name,
1289 stream ? "<-" : "->", dpcm->be->dai_link->name);
1291 /* BEs still alive need new FE */
1292 dpcm_be_reparent(fe, dpcm->be, stream);
1294 #ifdef CONFIG_DEBUG_FS
1295 debugfs_remove(dpcm->debugfs_state);
1297 list_del(&dpcm->list_be);
1298 list_del(&dpcm->list_fe);
1303 /* get BE for DAI widget and stream */
1304 static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1305 struct snd_soc_dapm_widget *widget, int stream)
1307 struct snd_soc_pcm_runtime *be;
1308 struct snd_soc_dai *dai;
1311 dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name);
1313 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1314 for_each_card_rtds(card, be) {
1316 if (!be->dai_link->no_pcm)
1319 dev_dbg(card->dev, "ASoC: try BE : %s\n",
1320 be->cpu_dai->playback_widget ?
1321 be->cpu_dai->playback_widget->name : "(not set)");
1323 if (be->cpu_dai->playback_widget == widget)
1326 for_each_rtd_codec_dai(be, i, dai) {
1327 if (dai->playback_widget == widget)
1333 for_each_card_rtds(card, be) {
1335 if (!be->dai_link->no_pcm)
1338 dev_dbg(card->dev, "ASoC: try BE %s\n",
1339 be->cpu_dai->capture_widget ?
1340 be->cpu_dai->capture_widget->name : "(not set)");
1342 if (be->cpu_dai->capture_widget == widget)
1345 for_each_rtd_codec_dai(be, i, dai) {
1346 if (dai->capture_widget == widget)
1352 /* dai link name and stream name set correctly ? */
1353 dev_err(card->dev, "ASoC: can't get %s BE for %s\n",
1354 stream ? "capture" : "playback", widget->name);
1358 static inline struct snd_soc_dapm_widget *
1359 dai_get_widget(struct snd_soc_dai *dai, int stream)
1361 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1362 return dai->playback_widget;
1364 return dai->capture_widget;
1367 static int widget_in_list(struct snd_soc_dapm_widget_list *list,
1368 struct snd_soc_dapm_widget *widget)
1372 for (i = 0; i < list->num_widgets; i++) {
1373 if (widget == list->widgets[i])
1380 static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget,
1381 enum snd_soc_dapm_direction dir)
1383 struct snd_soc_card *card = widget->dapm->card;
1384 struct snd_soc_pcm_runtime *rtd;
1385 struct snd_soc_dai *dai;
1388 if (dir == SND_SOC_DAPM_DIR_OUT) {
1389 for_each_card_rtds(card, rtd) {
1390 if (!rtd->dai_link->no_pcm)
1393 if (rtd->cpu_dai->playback_widget == widget)
1396 for_each_rtd_codec_dai(rtd, i, dai) {
1397 if (dai->playback_widget == widget)
1401 } else { /* SND_SOC_DAPM_DIR_IN */
1402 for_each_card_rtds(card, rtd) {
1403 if (!rtd->dai_link->no_pcm)
1406 if (rtd->cpu_dai->capture_widget == widget)
1409 for_each_rtd_codec_dai(rtd, i, dai) {
1410 if (dai->capture_widget == widget)
1419 int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
1420 int stream, struct snd_soc_dapm_widget_list **list)
1422 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
1425 /* get number of valid DAI paths and their widgets */
1426 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list,
1427 dpcm_end_walk_at_be);
1429 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
1430 stream ? "capture" : "playback");
1435 static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1436 struct snd_soc_dapm_widget_list **list_)
1438 struct snd_soc_dpcm *dpcm;
1439 struct snd_soc_dapm_widget_list *list = *list_;
1440 struct snd_soc_dapm_widget *widget;
1441 struct snd_soc_dai *dai;
1444 /* Destroy any old FE <--> BE connections */
1445 for_each_dpcm_be(fe, stream, dpcm) {
1448 /* is there a valid CPU DAI widget for this BE */
1449 widget = dai_get_widget(dpcm->be->cpu_dai, stream);
1451 /* prune the BE if it's no longer in our active list */
1452 if (widget && widget_in_list(list, widget))
1455 /* is there a valid CODEC DAI widget for this BE */
1456 for_each_rtd_codec_dai(dpcm->be, i, dai) {
1457 widget = dai_get_widget(dai, stream);
1459 /* prune the BE if it's no longer in our active list */
1460 if (widget && widget_in_list(list, widget))
1464 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
1465 stream ? "capture" : "playback",
1466 dpcm->be->dai_link->name, fe->dai_link->name);
1467 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
1468 dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1472 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
1476 static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1477 struct snd_soc_dapm_widget_list **list_)
1479 struct snd_soc_card *card = fe->card;
1480 struct snd_soc_dapm_widget_list *list = *list_;
1481 struct snd_soc_pcm_runtime *be;
1482 int i, new = 0, err;
1484 /* Create any new FE <--> BE connections */
1485 for (i = 0; i < list->num_widgets; i++) {
1487 switch (list->widgets[i]->id) {
1488 case snd_soc_dapm_dai_in:
1489 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
1492 case snd_soc_dapm_dai_out:
1493 if (stream != SNDRV_PCM_STREAM_CAPTURE)
1500 /* is there a valid BE rtd for this widget */
1501 be = dpcm_get_be(card, list->widgets[i], stream);
1503 dev_err(fe->dev, "ASoC: no BE found for %s\n",
1504 list->widgets[i]->name);
1508 /* make sure BE is a real BE */
1509 if (!be->dai_link->no_pcm)
1512 /* don't connect if FE is not running */
1513 if (!fe->dpcm[stream].runtime && !fe->fe_compr)
1516 /* newly connected FE and BE */
1517 err = dpcm_be_connect(fe, be, stream);
1519 dev_err(fe->dev, "ASoC: can't connect %s\n",
1520 list->widgets[i]->name);
1522 } else if (err == 0) /* already connected */
1526 be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1530 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
1535 * Find the corresponding BE DAIs that source or sink audio to this
1538 int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
1539 int stream, struct snd_soc_dapm_widget_list **list, int new)
1542 return dpcm_add_paths(fe, stream, list);
1544 return dpcm_prune_paths(fe, stream, list);
1547 void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
1549 struct snd_soc_dpcm *dpcm;
1551 for_each_dpcm_be(fe, stream, dpcm)
1552 dpcm->be->dpcm[stream].runtime_update =
1553 SND_SOC_DPCM_UPDATE_NO;
1556 static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
1559 struct snd_soc_dpcm *dpcm;
1561 /* disable any enabled and non active backends */
1562 for_each_dpcm_be(fe, stream, dpcm) {
1564 struct snd_soc_pcm_runtime *be = dpcm->be;
1565 struct snd_pcm_substream *be_substream =
1566 snd_soc_dpcm_get_substream(be, stream);
1568 if (be->dpcm[stream].users == 0)
1569 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
1570 stream ? "capture" : "playback",
1571 be->dpcm[stream].state);
1573 if (--be->dpcm[stream].users != 0)
1576 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1579 soc_pcm_close(be_substream);
1580 be_substream->runtime = NULL;
1581 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1585 int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
1587 struct snd_soc_dpcm *dpcm;
1590 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1591 for_each_dpcm_be(fe, stream, dpcm) {
1593 struct snd_soc_pcm_runtime *be = dpcm->be;
1594 struct snd_pcm_substream *be_substream =
1595 snd_soc_dpcm_get_substream(be, stream);
1597 if (!be_substream) {
1598 dev_err(be->dev, "ASoC: no backend %s stream\n",
1599 stream ? "capture" : "playback");
1603 /* is this op for this BE ? */
1604 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1607 /* first time the dpcm is open ? */
1608 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS)
1609 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
1610 stream ? "capture" : "playback",
1611 be->dpcm[stream].state);
1613 if (be->dpcm[stream].users++ != 0)
1616 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1617 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1620 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1621 stream ? "capture" : "playback", be->dai_link->name);
1623 be_substream->runtime = be->dpcm[stream].runtime;
1624 err = soc_pcm_open(be_substream);
1626 dev_err(be->dev, "ASoC: BE open failed %d\n", err);
1627 be->dpcm[stream].users--;
1628 if (be->dpcm[stream].users < 0)
1629 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
1630 stream ? "capture" : "playback",
1631 be->dpcm[stream].state);
1633 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1637 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1644 /* disable any enabled and non active backends */
1645 for_each_dpcm_be_rollback(fe, stream, dpcm) {
1646 struct snd_soc_pcm_runtime *be = dpcm->be;
1647 struct snd_pcm_substream *be_substream =
1648 snd_soc_dpcm_get_substream(be, stream);
1650 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1653 if (be->dpcm[stream].users == 0)
1654 dev_err(be->dev, "ASoC: no users %s at close %d\n",
1655 stream ? "capture" : "playback",
1656 be->dpcm[stream].state);
1658 if (--be->dpcm[stream].users != 0)
1661 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1664 soc_pcm_close(be_substream);
1665 be_substream->runtime = NULL;
1666 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1672 static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
1673 struct snd_soc_pcm_stream *stream)
1675 runtime->hw.rate_min = stream->rate_min;
1676 runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX);
1677 runtime->hw.channels_min = stream->channels_min;
1678 runtime->hw.channels_max = stream->channels_max;
1679 if (runtime->hw.formats)
1680 runtime->hw.formats &= stream->formats;
1682 runtime->hw.formats = stream->formats;
1683 runtime->hw.rates = stream->rates;
1686 static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream,
1689 struct snd_soc_pcm_runtime *fe = substream->private_data;
1690 struct snd_soc_dpcm *dpcm;
1691 struct snd_soc_dai *dai;
1692 int stream = substream->stream;
1694 if (!fe->dai_link->dpcm_merged_format)
1698 * It returns merged BE codec format
1699 * if FE want to use it (= dpcm_merged_format)
1702 for_each_dpcm_be(fe, stream, dpcm) {
1703 struct snd_soc_pcm_runtime *be = dpcm->be;
1704 struct snd_soc_dai_driver *codec_dai_drv;
1705 struct snd_soc_pcm_stream *codec_stream;
1708 for_each_rtd_codec_dai(be, i, dai) {
1710 * Skip CODECs which don't support the current stream
1711 * type. See soc_pcm_init_runtime_hw() for more details
1713 if (!snd_soc_dai_stream_valid(dai, stream))
1716 codec_dai_drv = dai->driver;
1717 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1718 codec_stream = &codec_dai_drv->playback;
1720 codec_stream = &codec_dai_drv->capture;
1722 *formats &= codec_stream->formats;
1727 static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
1728 unsigned int *channels_min,
1729 unsigned int *channels_max)
1731 struct snd_soc_pcm_runtime *fe = substream->private_data;
1732 struct snd_soc_dpcm *dpcm;
1733 int stream = substream->stream;
1735 if (!fe->dai_link->dpcm_merged_chan)
1739 * It returns merged BE codec channel;
1740 * if FE want to use it (= dpcm_merged_chan)
1743 for_each_dpcm_be(fe, stream, dpcm) {
1744 struct snd_soc_pcm_runtime *be = dpcm->be;
1745 struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver;
1746 struct snd_soc_dai_driver *codec_dai_drv;
1747 struct snd_soc_pcm_stream *codec_stream;
1748 struct snd_soc_pcm_stream *cpu_stream;
1750 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1751 cpu_stream = &cpu_dai_drv->playback;
1753 cpu_stream = &cpu_dai_drv->capture;
1755 *channels_min = max(*channels_min, cpu_stream->channels_min);
1756 *channels_max = min(*channels_max, cpu_stream->channels_max);
1759 * chan min/max cannot be enforced if there are multiple CODEC
1760 * DAIs connected to a single CPU DAI, use CPU DAI's directly
1762 if (be->num_codecs == 1) {
1763 codec_dai_drv = be->codec_dais[0]->driver;
1765 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1766 codec_stream = &codec_dai_drv->playback;
1768 codec_stream = &codec_dai_drv->capture;
1770 *channels_min = max(*channels_min,
1771 codec_stream->channels_min);
1772 *channels_max = min(*channels_max,
1773 codec_stream->channels_max);
1778 static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream,
1779 unsigned int *rates,
1780 unsigned int *rate_min,
1781 unsigned int *rate_max)
1783 struct snd_soc_pcm_runtime *fe = substream->private_data;
1784 struct snd_soc_dpcm *dpcm;
1785 int stream = substream->stream;
1787 if (!fe->dai_link->dpcm_merged_rate)
1791 * It returns merged BE codec channel;
1792 * if FE want to use it (= dpcm_merged_chan)
1795 for_each_dpcm_be(fe, stream, dpcm) {
1796 struct snd_soc_pcm_runtime *be = dpcm->be;
1797 struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver;
1798 struct snd_soc_dai_driver *codec_dai_drv;
1799 struct snd_soc_pcm_stream *codec_stream;
1800 struct snd_soc_pcm_stream *cpu_stream;
1801 struct snd_soc_dai *dai;
1804 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1805 cpu_stream = &cpu_dai_drv->playback;
1807 cpu_stream = &cpu_dai_drv->capture;
1809 *rate_min = max(*rate_min, cpu_stream->rate_min);
1810 *rate_max = min_not_zero(*rate_max, cpu_stream->rate_max);
1811 *rates = snd_pcm_rate_mask_intersect(*rates, cpu_stream->rates);
1813 for_each_rtd_codec_dai(be, i, dai) {
1815 * Skip CODECs which don't support the current stream
1816 * type. See soc_pcm_init_runtime_hw() for more details
1818 if (!snd_soc_dai_stream_valid(dai, stream))
1821 codec_dai_drv = dai->driver;
1822 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1823 codec_stream = &codec_dai_drv->playback;
1825 codec_stream = &codec_dai_drv->capture;
1827 *rate_min = max(*rate_min, codec_stream->rate_min);
1828 *rate_max = min_not_zero(*rate_max,
1829 codec_stream->rate_max);
1830 *rates = snd_pcm_rate_mask_intersect(*rates,
1831 codec_stream->rates);
1836 static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
1838 struct snd_pcm_runtime *runtime = substream->runtime;
1839 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1840 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1841 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
1843 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1844 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
1846 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
1848 dpcm_runtime_merge_format(substream, &runtime->hw.formats);
1849 dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min,
1850 &runtime->hw.channels_max);
1851 dpcm_runtime_merge_rate(substream, &runtime->hw.rates,
1852 &runtime->hw.rate_min, &runtime->hw.rate_max);
1855 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
1857 /* Set FE's runtime_update state; the state is protected via PCM stream lock
1858 * for avoiding the race with trigger callback.
1859 * If the state is unset and a trigger is pending while the previous operation,
1860 * process the pending trigger action here.
1862 static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
1863 int stream, enum snd_soc_dpcm_update state)
1865 struct snd_pcm_substream *substream =
1866 snd_soc_dpcm_get_substream(fe, stream);
1868 snd_pcm_stream_lock_irq(substream);
1869 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
1870 dpcm_fe_dai_do_trigger(substream,
1871 fe->dpcm[stream].trigger_pending - 1);
1872 fe->dpcm[stream].trigger_pending = 0;
1874 fe->dpcm[stream].runtime_update = state;
1875 snd_pcm_stream_unlock_irq(substream);
1878 static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
1881 struct snd_soc_dpcm *dpcm;
1882 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1883 struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai;
1886 /* apply symmetry for FE */
1887 if (soc_pcm_has_symmetry(fe_substream))
1888 fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1890 /* Symmetry only applies if we've got an active stream. */
1891 if (fe_cpu_dai->active) {
1892 err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
1897 /* apply symmetry for BE */
1898 for_each_dpcm_be(fe, stream, dpcm) {
1899 struct snd_soc_pcm_runtime *be = dpcm->be;
1900 struct snd_pcm_substream *be_substream =
1901 snd_soc_dpcm_get_substream(be, stream);
1902 struct snd_soc_pcm_runtime *rtd = be_substream->private_data;
1903 struct snd_soc_dai *codec_dai;
1906 if (rtd->dai_link->be_hw_params_fixup)
1909 if (soc_pcm_has_symmetry(be_substream))
1910 be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1912 /* Symmetry only applies if we've got an active stream. */
1913 if (rtd->cpu_dai->active) {
1914 err = soc_pcm_apply_symmetry(fe_substream,
1920 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1921 if (codec_dai->active) {
1922 err = soc_pcm_apply_symmetry(fe_substream,
1933 static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1935 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1936 struct snd_pcm_runtime *runtime = fe_substream->runtime;
1937 int stream = fe_substream->stream, ret = 0;
1939 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
1941 ret = dpcm_be_dai_startup(fe, fe_substream->stream);
1943 dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret);
1947 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
1949 /* start the DAI frontend */
1950 ret = soc_pcm_open(fe_substream);
1952 dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret);
1956 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1958 dpcm_set_fe_runtime(fe_substream);
1959 snd_pcm_limit_hw_rates(runtime);
1961 ret = dpcm_apply_symmetry(fe_substream, stream);
1963 dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n",
1968 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
1972 dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
1974 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
1978 int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
1980 struct snd_soc_dpcm *dpcm;
1982 /* only shutdown BEs that are either sinks or sources to this FE DAI */
1983 for_each_dpcm_be(fe, stream, dpcm) {
1985 struct snd_soc_pcm_runtime *be = dpcm->be;
1986 struct snd_pcm_substream *be_substream =
1987 snd_soc_dpcm_get_substream(be, stream);
1989 /* is this op for this BE ? */
1990 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1993 if (be->dpcm[stream].users == 0)
1994 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
1995 stream ? "capture" : "playback",
1996 be->dpcm[stream].state);
1998 if (--be->dpcm[stream].users != 0)
2001 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2002 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) {
2003 soc_pcm_hw_free(be_substream);
2004 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2007 dev_dbg(be->dev, "ASoC: close BE %s\n",
2008 be->dai_link->name);
2010 soc_pcm_close(be_substream);
2011 be_substream->runtime = NULL;
2013 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
2018 static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
2020 struct snd_soc_pcm_runtime *fe = substream->private_data;
2021 int stream = substream->stream;
2023 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2025 /* shutdown the BEs */
2026 dpcm_be_dai_shutdown(fe, substream->stream);
2028 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
2030 /* now shutdown the frontend */
2031 soc_pcm_close(substream);
2033 /* run the stream event for each BE */
2034 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
2036 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
2037 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2041 int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
2043 struct snd_soc_dpcm *dpcm;
2045 /* only hw_params backends that are either sinks or sources
2046 * to this frontend DAI */
2047 for_each_dpcm_be(fe, stream, dpcm) {
2049 struct snd_soc_pcm_runtime *be = dpcm->be;
2050 struct snd_pcm_substream *be_substream =
2051 snd_soc_dpcm_get_substream(be, stream);
2053 /* is this op for this BE ? */
2054 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2057 /* only free hw when no longer used - check all FEs */
2058 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2061 /* do not free hw if this BE is used by other FE */
2062 if (be->dpcm[stream].users > 1)
2065 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2066 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2067 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2068 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
2069 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2070 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2073 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
2074 be->dai_link->name);
2076 soc_pcm_hw_free(be_substream);
2078 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2084 static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
2086 struct snd_soc_pcm_runtime *fe = substream->private_data;
2087 int err, stream = substream->stream;
2089 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2090 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2092 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
2094 /* call hw_free on the frontend */
2095 err = soc_pcm_hw_free(substream);
2097 dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
2098 fe->dai_link->name);
2100 /* only hw_params backends that are either sinks or sources
2101 * to this frontend DAI */
2102 err = dpcm_be_dai_hw_free(fe, stream);
2104 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2105 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2107 mutex_unlock(&fe->card->mutex);
2111 int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
2113 struct snd_soc_dpcm *dpcm;
2116 for_each_dpcm_be(fe, stream, dpcm) {
2118 struct snd_soc_pcm_runtime *be = dpcm->be;
2119 struct snd_pcm_substream *be_substream =
2120 snd_soc_dpcm_get_substream(be, stream);
2122 /* is this op for this BE ? */
2123 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2126 /* copy params for each dpcm */
2127 memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params,
2128 sizeof(struct snd_pcm_hw_params));
2130 /* perform any hw_params fixups */
2131 if (be->dai_link->be_hw_params_fixup) {
2132 ret = be->dai_link->be_hw_params_fixup(be,
2136 "ASoC: hw_params BE fixup failed %d\n",
2142 /* only allow hw_params() if no connected FEs are running */
2143 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
2146 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2147 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2148 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
2151 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
2152 be->dai_link->name);
2154 ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params);
2156 dev_err(dpcm->be->dev,
2157 "ASoC: hw_params BE failed %d\n", ret);
2161 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2166 /* disable any enabled and non active backends */
2167 for_each_dpcm_be_rollback(fe, stream, dpcm) {
2168 struct snd_soc_pcm_runtime *be = dpcm->be;
2169 struct snd_pcm_substream *be_substream =
2170 snd_soc_dpcm_get_substream(be, stream);
2172 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2175 /* only allow hw_free() if no connected FEs are running */
2176 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2179 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2180 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2181 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2182 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2185 soc_pcm_hw_free(be_substream);
2191 static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
2192 struct snd_pcm_hw_params *params)
2194 struct snd_soc_pcm_runtime *fe = substream->private_data;
2195 int ret, stream = substream->stream;
2197 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2198 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2200 memcpy(&fe->dpcm[substream->stream].hw_params, params,
2201 sizeof(struct snd_pcm_hw_params));
2202 ret = dpcm_be_dai_hw_params(fe, substream->stream);
2204 dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret);
2208 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
2209 fe->dai_link->name, params_rate(params),
2210 params_channels(params), params_format(params));
2212 /* call hw_params on the frontend */
2213 ret = soc_pcm_hw_params(substream, params);
2215 dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret);
2216 dpcm_be_dai_hw_free(fe, stream);
2218 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2221 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2222 mutex_unlock(&fe->card->mutex);
2226 static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
2227 struct snd_pcm_substream *substream, int cmd)
2231 dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n",
2232 dpcm->be->dai_link->name, cmd);
2234 ret = soc_pcm_trigger(substream, cmd);
2236 dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret);
2241 int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
2244 struct snd_soc_dpcm *dpcm;
2247 for_each_dpcm_be(fe, stream, dpcm) {
2249 struct snd_soc_pcm_runtime *be = dpcm->be;
2250 struct snd_pcm_substream *be_substream =
2251 snd_soc_dpcm_get_substream(be, stream);
2253 /* is this op for this BE ? */
2254 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2258 case SNDRV_PCM_TRIGGER_START:
2259 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2260 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2263 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2267 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2269 case SNDRV_PCM_TRIGGER_RESUME:
2270 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2273 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2277 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2279 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2280 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
2283 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2287 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2289 case SNDRV_PCM_TRIGGER_STOP:
2290 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2293 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2296 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2300 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2302 case SNDRV_PCM_TRIGGER_SUSPEND:
2303 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2306 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2309 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2313 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
2315 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2316 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2319 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2322 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2326 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2333 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
2335 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
2337 struct snd_soc_pcm_runtime *fe = substream->private_data;
2338 int stream = substream->stream, ret;
2339 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2341 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
2344 case SND_SOC_DPCM_TRIGGER_PRE:
2345 /* call trigger on the frontend before the backend. */
2347 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
2348 fe->dai_link->name, cmd);
2350 ret = soc_pcm_trigger(substream, cmd);
2352 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2356 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2358 case SND_SOC_DPCM_TRIGGER_POST:
2359 /* call trigger on the frontend after the backend. */
2361 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2363 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2367 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
2368 fe->dai_link->name, cmd);
2370 ret = soc_pcm_trigger(substream, cmd);
2372 case SND_SOC_DPCM_TRIGGER_BESPOKE:
2373 /* bespoke trigger() - handles both FE and BEs */
2375 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
2376 fe->dai_link->name, cmd);
2378 ret = soc_pcm_bespoke_trigger(substream, cmd);
2380 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2385 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
2386 fe->dai_link->name);
2392 case SNDRV_PCM_TRIGGER_START:
2393 case SNDRV_PCM_TRIGGER_RESUME:
2394 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2395 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2397 case SNDRV_PCM_TRIGGER_STOP:
2398 case SNDRV_PCM_TRIGGER_SUSPEND:
2399 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2401 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2402 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2407 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
2411 static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2413 struct snd_soc_pcm_runtime *fe = substream->private_data;
2414 int stream = substream->stream;
2416 /* if FE's runtime_update is already set, we're in race;
2417 * process this trigger later at exit
2419 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2420 fe->dpcm[stream].trigger_pending = cmd + 1;
2421 return 0; /* delayed, assuming it's successful */
2424 /* we're alone, let's trigger */
2425 return dpcm_fe_dai_do_trigger(substream, cmd);
2428 int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
2430 struct snd_soc_dpcm *dpcm;
2433 for_each_dpcm_be(fe, stream, dpcm) {
2435 struct snd_soc_pcm_runtime *be = dpcm->be;
2436 struct snd_pcm_substream *be_substream =
2437 snd_soc_dpcm_get_substream(be, stream);
2439 /* is this op for this BE ? */
2440 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2443 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2444 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2445 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2448 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
2449 be->dai_link->name);
2451 ret = soc_pcm_prepare(be_substream);
2453 dev_err(be->dev, "ASoC: backend prepare failed %d\n",
2458 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2463 static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
2465 struct snd_soc_pcm_runtime *fe = substream->private_data;
2466 int stream = substream->stream, ret = 0;
2468 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2470 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
2472 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2474 /* there is no point preparing this FE if there are no BEs */
2475 if (list_empty(&fe->dpcm[stream].be_clients)) {
2476 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
2477 fe->dai_link->name);
2482 ret = dpcm_be_dai_prepare(fe, substream->stream);
2486 /* call prepare on the frontend */
2487 ret = soc_pcm_prepare(substream);
2489 dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
2490 fe->dai_link->name);
2494 /* run the stream event for each BE */
2495 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2496 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2499 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2500 mutex_unlock(&fe->card->mutex);
2505 static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
2506 unsigned int cmd, void *arg)
2508 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2509 struct snd_soc_component *component;
2510 struct snd_soc_rtdcom_list *rtdcom;
2512 for_each_rtdcom(rtd, rtdcom) {
2513 component = rtdcom->component;
2515 if (!component->driver->ops ||
2516 !component->driver->ops->ioctl)
2519 /* FIXME: use 1st ioctl */
2520 return component->driver->ops->ioctl(substream, cmd, arg);
2523 return snd_pcm_lib_ioctl(substream, cmd, arg);
2526 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2528 struct snd_pcm_substream *substream =
2529 snd_soc_dpcm_get_substream(fe, stream);
2530 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2533 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
2534 stream ? "capture" : "playback", fe->dai_link->name);
2536 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2537 /* call bespoke trigger - FE takes care of all BE triggers */
2538 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
2539 fe->dai_link->name);
2541 err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
2543 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
2545 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
2546 fe->dai_link->name);
2548 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
2550 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
2553 err = dpcm_be_dai_hw_free(fe, stream);
2555 dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err);
2557 err = dpcm_be_dai_shutdown(fe, stream);
2559 dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err);
2561 /* run the stream event for each BE */
2562 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2567 static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2569 struct snd_pcm_substream *substream =
2570 snd_soc_dpcm_get_substream(fe, stream);
2571 struct snd_soc_dpcm *dpcm;
2572 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2575 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
2576 stream ? "capture" : "playback", fe->dai_link->name);
2578 /* Only start the BE if the FE is ready */
2579 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2580 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
2583 /* startup must always be called for new BEs */
2584 ret = dpcm_be_dai_startup(fe, stream);
2588 /* keep going if FE state is > open */
2589 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2592 ret = dpcm_be_dai_hw_params(fe, stream);
2596 /* keep going if FE state is > hw_params */
2597 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2601 ret = dpcm_be_dai_prepare(fe, stream);
2605 /* run the stream event for each BE */
2606 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2608 /* keep going if FE state is > prepare */
2609 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2610 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2613 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2614 /* call trigger on the frontend - FE takes care of all BE triggers */
2615 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
2616 fe->dai_link->name);
2618 ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
2620 dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret);
2624 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
2625 fe->dai_link->name);
2627 ret = dpcm_be_dai_trigger(fe, stream,
2628 SNDRV_PCM_TRIGGER_START);
2630 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2638 dpcm_be_dai_hw_free(fe, stream);
2640 dpcm_be_dai_shutdown(fe, stream);
2642 /* disconnect any non started BEs */
2643 for_each_dpcm_be(fe, stream, dpcm) {
2644 struct snd_soc_pcm_runtime *be = dpcm->be;
2645 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2646 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2652 static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
2656 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
2657 ret = dpcm_run_update_startup(fe, stream);
2659 dev_err(fe->dev, "ASoC: failed to startup some BEs\n");
2660 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2665 static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
2669 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
2670 ret = dpcm_run_update_shutdown(fe, stream);
2672 dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n");
2673 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2678 static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new)
2680 struct snd_soc_dapm_widget_list *list;
2683 if (!fe->dai_link->dynamic)
2686 /* only check active links */
2687 if (!fe->cpu_dai->active)
2690 /* DAPM sync will call this to update DSP paths */
2691 dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n",
2692 new ? "new" : "old", fe->dai_link->name);
2694 /* skip if FE doesn't have playback capability */
2695 if (!fe->cpu_dai->driver->playback.channels_min ||
2696 !fe->codec_dai->driver->playback.channels_min)
2699 /* skip if FE isn't currently playing */
2700 if (!fe->cpu_dai->playback_active || !fe->codec_dai->playback_active)
2703 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
2705 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2706 fe->dai_link->name, "playback");
2710 /* update any playback paths */
2711 count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, new);
2714 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2716 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2718 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2719 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2722 dpcm_path_put(&list);
2725 /* skip if FE doesn't have capture capability */
2726 if (!fe->cpu_dai->driver->capture.channels_min ||
2727 !fe->codec_dai->driver->capture.channels_min)
2730 /* skip if FE isn't currently capturing */
2731 if (!fe->cpu_dai->capture_active || !fe->codec_dai->capture_active)
2734 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
2736 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2737 fe->dai_link->name, "capture");
2741 /* update any old capture paths */
2742 count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, new);
2745 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2747 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2749 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2750 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2753 dpcm_path_put(&list);
2758 /* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2761 int soc_dpcm_runtime_update(struct snd_soc_card *card)
2763 struct snd_soc_pcm_runtime *fe;
2766 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2767 /* shutdown all old paths first */
2768 for_each_card_rtds(card, fe) {
2769 ret = soc_dpcm_fe_runtime_update(fe, 0);
2774 /* bring new paths up */
2775 for_each_card_rtds(card, fe) {
2776 ret = soc_dpcm_fe_runtime_update(fe, 1);
2782 mutex_unlock(&card->mutex);
2785 int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
2787 struct snd_soc_dpcm *dpcm;
2788 struct snd_soc_dai *dai;
2790 for_each_dpcm_be(fe, SNDRV_PCM_STREAM_PLAYBACK, dpcm) {
2792 struct snd_soc_pcm_runtime *be = dpcm->be;
2795 if (be->dai_link->ignore_suspend)
2798 for_each_rtd_codec_dai(be, i, dai) {
2799 struct snd_soc_dai_driver *drv = dai->driver;
2801 dev_dbg(be->dev, "ASoC: BE digital mute %s\n",
2802 be->dai_link->name);
2804 if (drv->ops && drv->ops->digital_mute &&
2805 dai->playback_active)
2806 drv->ops->digital_mute(dai, mute);
2813 static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
2815 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2816 struct snd_soc_dpcm *dpcm;
2817 struct snd_soc_dapm_widget_list *list;
2819 int stream = fe_substream->stream;
2821 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2822 fe->dpcm[stream].runtime = fe_substream->runtime;
2824 ret = dpcm_path_get(fe, stream, &list);
2826 mutex_unlock(&fe->card->mutex);
2828 } else if (ret == 0) {
2829 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
2830 fe->dai_link->name, stream ? "capture" : "playback");
2833 /* calculate valid and active FE <-> BE dpcms */
2834 dpcm_process_paths(fe, stream, &list, 1);
2836 ret = dpcm_fe_dai_startup(fe_substream);
2838 /* clean up all links */
2839 for_each_dpcm_be(fe, stream, dpcm)
2840 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2842 dpcm_be_disconnect(fe, stream);
2843 fe->dpcm[stream].runtime = NULL;
2846 dpcm_clear_pending_state(fe, stream);
2847 dpcm_path_put(&list);
2848 mutex_unlock(&fe->card->mutex);
2852 static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
2854 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2855 struct snd_soc_dpcm *dpcm;
2856 int stream = fe_substream->stream, ret;
2858 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2859 ret = dpcm_fe_dai_shutdown(fe_substream);
2861 /* mark FE's links ready to prune */
2862 for_each_dpcm_be(fe, stream, dpcm)
2863 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2865 dpcm_be_disconnect(fe, stream);
2867 fe->dpcm[stream].runtime = NULL;
2868 mutex_unlock(&fe->card->mutex);
2872 static void soc_pcm_private_free(struct snd_pcm *pcm)
2874 struct snd_soc_pcm_runtime *rtd = pcm->private_data;
2875 struct snd_soc_rtdcom_list *rtdcom;
2876 struct snd_soc_component *component;
2878 /* need to sync the delayed work before releasing resources */
2879 flush_delayed_work(&rtd->delayed_work);
2880 for_each_rtdcom(rtd, rtdcom) {
2881 component = rtdcom->component;
2883 if (component->driver->pcm_free)
2884 component->driver->pcm_free(pcm);
2888 static int soc_rtdcom_ack(struct snd_pcm_substream *substream)
2890 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2891 struct snd_soc_rtdcom_list *rtdcom;
2892 struct snd_soc_component *component;
2894 for_each_rtdcom(rtd, rtdcom) {
2895 component = rtdcom->component;
2897 if (!component->driver->ops ||
2898 !component->driver->ops->ack)
2901 /* FIXME. it returns 1st ask now */
2902 return component->driver->ops->ack(substream);
2908 static int soc_rtdcom_copy_user(struct snd_pcm_substream *substream, int channel,
2909 unsigned long pos, void __user *buf,
2910 unsigned long bytes)
2912 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2913 struct snd_soc_rtdcom_list *rtdcom;
2914 struct snd_soc_component *component;
2916 for_each_rtdcom(rtd, rtdcom) {
2917 component = rtdcom->component;
2919 if (!component->driver->ops ||
2920 !component->driver->ops->copy_user)
2923 /* FIXME. it returns 1st copy now */
2924 return component->driver->ops->copy_user(substream, channel,
2931 static int soc_rtdcom_copy_kernel(struct snd_pcm_substream *substream, int channel,
2932 unsigned long pos, void *buf, unsigned long bytes)
2934 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2935 struct snd_soc_rtdcom_list *rtdcom;
2936 struct snd_soc_component *component;
2938 for_each_rtdcom(rtd, rtdcom) {
2939 component = rtdcom->component;
2941 if (!component->driver->ops ||
2942 !component->driver->ops->copy_kernel)
2945 /* FIXME. it returns 1st copy now */
2946 return component->driver->ops->copy_kernel(substream, channel,
2953 static int soc_rtdcom_fill_silence(struct snd_pcm_substream *substream, int channel,
2954 unsigned long pos, unsigned long bytes)
2956 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2957 struct snd_soc_rtdcom_list *rtdcom;
2958 struct snd_soc_component *component;
2960 for_each_rtdcom(rtd, rtdcom) {
2961 component = rtdcom->component;
2963 if (!component->driver->ops ||
2964 !component->driver->ops->fill_silence)
2967 /* FIXME. it returns 1st silence now */
2968 return component->driver->ops->fill_silence(substream, channel,
2975 static struct page *soc_rtdcom_page(struct snd_pcm_substream *substream,
2976 unsigned long offset)
2978 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2979 struct snd_soc_rtdcom_list *rtdcom;
2980 struct snd_soc_component *component;
2983 for_each_rtdcom(rtd, rtdcom) {
2984 component = rtdcom->component;
2986 if (!component->driver->ops ||
2987 !component->driver->ops->page)
2990 /* FIXME. it returns 1st page now */
2991 page = component->driver->ops->page(substream, offset);
2999 static int soc_rtdcom_mmap(struct snd_pcm_substream *substream,
3000 struct vm_area_struct *vma)
3002 struct snd_soc_pcm_runtime *rtd = substream->private_data;
3003 struct snd_soc_rtdcom_list *rtdcom;
3004 struct snd_soc_component *component;
3006 for_each_rtdcom(rtd, rtdcom) {
3007 component = rtdcom->component;
3009 if (!component->driver->ops ||
3010 !component->driver->ops->mmap)
3013 /* FIXME. it returns 1st mmap now */
3014 return component->driver->ops->mmap(substream, vma);
3020 /* create a new pcm */
3021 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
3023 struct snd_soc_dai *codec_dai;
3024 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3025 struct snd_soc_component *component;
3026 struct snd_soc_rtdcom_list *rtdcom;
3027 struct snd_pcm *pcm;
3029 int ret = 0, playback = 0, capture = 0;
3032 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
3033 playback = rtd->dai_link->dpcm_playback;
3034 capture = rtd->dai_link->dpcm_capture;
3036 for_each_rtd_codec_dai(rtd, i, codec_dai) {
3037 if (codec_dai->driver->playback.channels_min)
3039 if (codec_dai->driver->capture.channels_min)
3043 capture = capture && cpu_dai->driver->capture.channels_min;
3044 playback = playback && cpu_dai->driver->playback.channels_min;
3047 if (rtd->dai_link->playback_only) {
3052 if (rtd->dai_link->capture_only) {
3057 /* create the PCM */
3058 if (rtd->dai_link->no_pcm) {
3059 snprintf(new_name, sizeof(new_name), "(%s)",
3060 rtd->dai_link->stream_name);
3062 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
3063 playback, capture, &pcm);
3065 if (rtd->dai_link->dynamic)
3066 snprintf(new_name, sizeof(new_name), "%s (*)",
3067 rtd->dai_link->stream_name);
3069 snprintf(new_name, sizeof(new_name), "%s %s-%d",
3070 rtd->dai_link->stream_name,
3071 (rtd->num_codecs > 1) ?
3072 "multicodec" : rtd->codec_dai->name, num);
3074 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
3078 dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n",
3079 rtd->dai_link->name);
3082 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
3084 /* DAPM dai link stream work */
3085 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
3087 pcm->nonatomic = rtd->dai_link->nonatomic;
3089 pcm->private_data = rtd;
3091 if (rtd->dai_link->no_pcm) {
3093 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
3095 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
3099 /* ASoC PCM operations */
3100 if (rtd->dai_link->dynamic) {
3101 rtd->ops.open = dpcm_fe_dai_open;
3102 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
3103 rtd->ops.prepare = dpcm_fe_dai_prepare;
3104 rtd->ops.trigger = dpcm_fe_dai_trigger;
3105 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
3106 rtd->ops.close = dpcm_fe_dai_close;
3107 rtd->ops.pointer = soc_pcm_pointer;
3108 rtd->ops.ioctl = soc_pcm_ioctl;
3110 rtd->ops.open = soc_pcm_open;
3111 rtd->ops.hw_params = soc_pcm_hw_params;
3112 rtd->ops.prepare = soc_pcm_prepare;
3113 rtd->ops.trigger = soc_pcm_trigger;
3114 rtd->ops.hw_free = soc_pcm_hw_free;
3115 rtd->ops.close = soc_pcm_close;
3116 rtd->ops.pointer = soc_pcm_pointer;
3117 rtd->ops.ioctl = soc_pcm_ioctl;
3120 for_each_rtdcom(rtd, rtdcom) {
3121 const struct snd_pcm_ops *ops = rtdcom->component->driver->ops;
3127 rtd->ops.ack = soc_rtdcom_ack;
3129 rtd->ops.copy_user = soc_rtdcom_copy_user;
3130 if (ops->copy_kernel)
3131 rtd->ops.copy_kernel = soc_rtdcom_copy_kernel;
3132 if (ops->fill_silence)
3133 rtd->ops.fill_silence = soc_rtdcom_fill_silence;
3135 rtd->ops.page = soc_rtdcom_page;
3137 rtd->ops.mmap = soc_rtdcom_mmap;
3141 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
3144 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
3146 for_each_rtdcom(rtd, rtdcom) {
3147 component = rtdcom->component;
3149 if (!component->driver->pcm_new)
3152 ret = component->driver->pcm_new(rtd);
3154 dev_err(component->dev,
3155 "ASoC: pcm constructor failed: %d\n",
3161 pcm->private_free = soc_pcm_private_free;
3162 pcm->no_device_suspend = true;
3164 dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
3165 (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
3170 /* is the current PCM operation for this FE ? */
3171 int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
3173 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
3177 EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
3179 /* is the current PCM operation for this BE ? */
3180 int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
3181 struct snd_soc_pcm_runtime *be, int stream)
3183 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
3184 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
3185 be->dpcm[stream].runtime_update))
3189 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
3191 /* get the substream for this BE */
3192 struct snd_pcm_substream *
3193 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
3195 return be->pcm->streams[stream].substream;
3197 EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
3199 /* get the BE runtime state */
3200 enum snd_soc_dpcm_state
3201 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream)
3203 return be->dpcm[stream].state;
3205 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state);
3207 /* set the BE runtime state */
3208 void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be,
3209 int stream, enum snd_soc_dpcm_state state)
3211 be->dpcm[stream].state = state;
3213 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state);
3216 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
3217 * are not running, paused or suspended for the specified stream direction.
3219 int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
3220 struct snd_soc_pcm_runtime *be, int stream)
3222 struct snd_soc_dpcm *dpcm;
3225 for_each_dpcm_fe(be, stream, dpcm) {
3230 state = dpcm->fe->dpcm[stream].state;
3231 if (state == SND_SOC_DPCM_STATE_START ||
3232 state == SND_SOC_DPCM_STATE_PAUSED ||
3233 state == SND_SOC_DPCM_STATE_SUSPEND)
3237 /* it's safe to free/stop this BE DAI */
3240 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
3243 * We can only change hw params a BE DAI if any of it's FE are not prepared,
3244 * running, paused or suspended for the specified stream direction.
3246 int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
3247 struct snd_soc_pcm_runtime *be, int stream)
3249 struct snd_soc_dpcm *dpcm;
3252 for_each_dpcm_fe(be, stream, dpcm) {
3257 state = dpcm->fe->dpcm[stream].state;
3258 if (state == SND_SOC_DPCM_STATE_START ||
3259 state == SND_SOC_DPCM_STATE_PAUSED ||
3260 state == SND_SOC_DPCM_STATE_SUSPEND ||
3261 state == SND_SOC_DPCM_STATE_PREPARE)
3265 /* it's safe to change hw_params */
3268 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
3270 #ifdef CONFIG_DEBUG_FS
3271 static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
3274 case SND_SOC_DPCM_STATE_NEW:
3276 case SND_SOC_DPCM_STATE_OPEN:
3278 case SND_SOC_DPCM_STATE_HW_PARAMS:
3280 case SND_SOC_DPCM_STATE_PREPARE:
3282 case SND_SOC_DPCM_STATE_START:
3284 case SND_SOC_DPCM_STATE_STOP:
3286 case SND_SOC_DPCM_STATE_SUSPEND:
3288 case SND_SOC_DPCM_STATE_PAUSED:
3290 case SND_SOC_DPCM_STATE_HW_FREE:
3292 case SND_SOC_DPCM_STATE_CLOSE:
3299 static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
3300 int stream, char *buf, size_t size)
3302 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
3303 struct snd_soc_dpcm *dpcm;
3307 offset += snprintf(buf + offset, size - offset,
3308 "[%s - %s]\n", fe->dai_link->name,
3309 stream ? "Capture" : "Playback");
3311 offset += snprintf(buf + offset, size - offset, "State: %s\n",
3312 dpcm_state_string(fe->dpcm[stream].state));
3314 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3315 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3316 offset += snprintf(buf + offset, size - offset,
3318 "Format = %s, Channels = %d, Rate = %d\n",
3319 snd_pcm_format_name(params_format(params)),
3320 params_channels(params),
3321 params_rate(params));
3324 offset += snprintf(buf + offset, size - offset, "Backends:\n");
3326 if (list_empty(&fe->dpcm[stream].be_clients)) {
3327 offset += snprintf(buf + offset, size - offset,
3328 " No active DSP links\n");
3332 for_each_dpcm_be(fe, stream, dpcm) {
3333 struct snd_soc_pcm_runtime *be = dpcm->be;
3334 params = &dpcm->hw_params;
3336 offset += snprintf(buf + offset, size - offset,
3337 "- %s\n", be->dai_link->name);
3339 offset += snprintf(buf + offset, size - offset,
3341 dpcm_state_string(be->dpcm[stream].state));
3343 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3344 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3345 offset += snprintf(buf + offset, size - offset,
3346 " Hardware Params: "
3347 "Format = %s, Channels = %d, Rate = %d\n",
3348 snd_pcm_format_name(params_format(params)),
3349 params_channels(params),
3350 params_rate(params));
3357 static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
3358 size_t count, loff_t *ppos)
3360 struct snd_soc_pcm_runtime *fe = file->private_data;
3361 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
3364 buf = kmalloc(out_count, GFP_KERNEL);
3368 if (fe->cpu_dai->driver->playback.channels_min)
3369 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
3370 buf + offset, out_count - offset);
3372 if (fe->cpu_dai->driver->capture.channels_min)
3373 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
3374 buf + offset, out_count - offset);
3376 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
3382 static const struct file_operations dpcm_state_fops = {
3383 .open = simple_open,
3384 .read = dpcm_state_read_file,
3385 .llseek = default_llseek,
3388 void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
3393 if (!rtd->card->debugfs_card_root)
3396 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
3397 rtd->card->debugfs_card_root);
3398 if (!rtd->debugfs_dpcm_root) {
3400 "ASoC: Failed to create dpcm debugfs directory %s\n",
3401 rtd->dai_link->name);
3405 debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
3406 rtd, &dpcm_state_fops);