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 (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
959 soc_pcm_codec_params_fixup(&codec_params,
962 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
964 soc_pcm_codec_params_fixup(&codec_params,
967 ret = soc_dai_hw_params(substream, &codec_params, codec_dai);
971 codec_dai->rate = params_rate(&codec_params);
972 codec_dai->channels = params_channels(&codec_params);
973 codec_dai->sample_bits = snd_pcm_format_physical_width(
974 params_format(&codec_params));
976 snd_soc_dapm_update_dai(substream, &codec_params, codec_dai);
979 ret = soc_dai_hw_params(substream, params, cpu_dai);
983 for_each_rtdcom(rtd, rtdcom) {
984 component = rtdcom->component;
986 if (!component->driver->ops ||
987 !component->driver->ops->hw_params)
990 ret = component->driver->ops->hw_params(substream, params);
992 dev_err(component->dev,
993 "ASoC: %s hw params failed: %d\n",
994 component->name, ret);
1000 /* store the parameters for each DAIs */
1001 cpu_dai->rate = params_rate(params);
1002 cpu_dai->channels = params_channels(params);
1003 cpu_dai->sample_bits =
1004 snd_pcm_format_physical_width(params_format(params));
1006 snd_soc_dapm_update_dai(substream, params, cpu_dai);
1008 ret = soc_pcm_params_symmetry(substream, params);
1012 mutex_unlock(&rtd->pcm_mutex);
1016 soc_pcm_components_hw_free(substream, component);
1018 if (cpu_dai->driver->ops->hw_free)
1019 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
1022 i = rtd->num_codecs;
1025 for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) {
1026 if (codec_dai->driver->ops->hw_free)
1027 codec_dai->driver->ops->hw_free(substream, codec_dai);
1028 codec_dai->rate = 0;
1031 if (rtd->dai_link->ops->hw_free)
1032 rtd->dai_link->ops->hw_free(substream);
1034 mutex_unlock(&rtd->pcm_mutex);
1039 * Frees resources allocated by hw_params, can be called multiple times
1041 static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
1043 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1044 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1045 struct snd_soc_dai *codec_dai;
1046 bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
1049 mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
1051 /* clear the corresponding DAIs parameters when going to be inactive */
1052 if (cpu_dai->active == 1) {
1054 cpu_dai->channels = 0;
1055 cpu_dai->sample_bits = 0;
1058 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1059 if (codec_dai->active == 1) {
1060 codec_dai->rate = 0;
1061 codec_dai->channels = 0;
1062 codec_dai->sample_bits = 0;
1066 /* apply codec digital mute */
1067 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1068 if ((playback && codec_dai->playback_active == 1) ||
1069 (!playback && codec_dai->capture_active == 1))
1070 snd_soc_dai_digital_mute(codec_dai, 1,
1074 /* free any machine hw params */
1075 if (rtd->dai_link->ops->hw_free)
1076 rtd->dai_link->ops->hw_free(substream);
1078 /* free any component resources */
1079 soc_pcm_components_hw_free(substream, NULL);
1081 /* now free hw params for the DAIs */
1082 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1083 if (codec_dai->driver->ops->hw_free)
1084 codec_dai->driver->ops->hw_free(substream, codec_dai);
1087 if (cpu_dai->driver->ops->hw_free)
1088 cpu_dai->driver->ops->hw_free(substream, cpu_dai);
1090 mutex_unlock(&rtd->pcm_mutex);
1094 static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1096 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1097 struct snd_soc_component *component;
1098 struct snd_soc_rtdcom_list *rtdcom;
1099 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1100 struct snd_soc_dai *codec_dai;
1103 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1104 if (codec_dai->driver->ops->trigger) {
1105 ret = codec_dai->driver->ops->trigger(substream,
1112 for_each_rtdcom(rtd, rtdcom) {
1113 component = rtdcom->component;
1115 if (!component->driver->ops ||
1116 !component->driver->ops->trigger)
1119 ret = component->driver->ops->trigger(substream, cmd);
1124 if (cpu_dai->driver->ops->trigger) {
1125 ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
1130 if (rtd->dai_link->ops->trigger) {
1131 ret = rtd->dai_link->ops->trigger(substream, cmd);
1139 static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream,
1142 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1143 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1144 struct snd_soc_dai *codec_dai;
1147 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1148 if (codec_dai->driver->ops->bespoke_trigger) {
1149 ret = codec_dai->driver->ops->bespoke_trigger(substream,
1156 if (cpu_dai->driver->ops->bespoke_trigger) {
1157 ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai);
1164 * soc level wrapper for pointer callback
1165 * If cpu_dai, codec_dai, component driver has the delay callback, then
1166 * the runtime->delay will be updated accordingly.
1168 static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
1170 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1171 struct snd_soc_component *component;
1172 struct snd_soc_rtdcom_list *rtdcom;
1173 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1174 struct snd_soc_dai *codec_dai;
1175 struct snd_pcm_runtime *runtime = substream->runtime;
1176 snd_pcm_uframes_t offset = 0;
1177 snd_pcm_sframes_t delay = 0;
1178 snd_pcm_sframes_t codec_delay = 0;
1181 /* clearing the previous total delay */
1184 for_each_rtdcom(rtd, rtdcom) {
1185 component = rtdcom->component;
1187 if (!component->driver->ops ||
1188 !component->driver->ops->pointer)
1191 /* FIXME: use 1st pointer */
1192 offset = component->driver->ops->pointer(substream);
1195 /* base delay if assigned in pointer callback */
1196 delay = runtime->delay;
1198 if (cpu_dai->driver->ops->delay)
1199 delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
1201 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1202 if (codec_dai->driver->ops->delay)
1203 codec_delay = max(codec_delay,
1204 codec_dai->driver->ops->delay(substream,
1207 delay += codec_delay;
1209 runtime->delay = delay;
1214 /* connect a FE and BE */
1215 static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,
1216 struct snd_soc_pcm_runtime *be, int stream)
1218 struct snd_soc_dpcm *dpcm;
1219 unsigned long flags;
1221 /* only add new dpcms */
1222 for_each_dpcm_be(fe, stream, dpcm) {
1223 if (dpcm->be == be && dpcm->fe == fe)
1227 dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL);
1233 be->dpcm[stream].runtime = fe->dpcm[stream].runtime;
1234 dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW;
1235 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
1236 list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients);
1237 list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients);
1238 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
1240 dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n",
1241 stream ? "capture" : "playback", fe->dai_link->name,
1242 stream ? "<-" : "->", be->dai_link->name);
1244 #ifdef CONFIG_DEBUG_FS
1245 if (fe->debugfs_dpcm_root)
1246 dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644,
1247 fe->debugfs_dpcm_root, &dpcm->state);
1252 /* reparent a BE onto another FE */
1253 static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
1254 struct snd_soc_pcm_runtime *be, int stream)
1256 struct snd_soc_dpcm *dpcm;
1257 struct snd_pcm_substream *fe_substream, *be_substream;
1259 /* reparent if BE is connected to other FEs */
1260 if (!be->dpcm[stream].users)
1263 be_substream = snd_soc_dpcm_get_substream(be, stream);
1265 for_each_dpcm_fe(be, stream, dpcm) {
1269 dev_dbg(fe->dev, "reparent %s path %s %s %s\n",
1270 stream ? "capture" : "playback",
1271 dpcm->fe->dai_link->name,
1272 stream ? "<-" : "->", dpcm->be->dai_link->name);
1274 fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
1275 be_substream->runtime = fe_substream->runtime;
1280 /* disconnect a BE and FE */
1281 void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)
1283 struct snd_soc_dpcm *dpcm, *d;
1284 unsigned long flags;
1286 for_each_dpcm_be_safe(fe, stream, dpcm, d) {
1287 dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n",
1288 stream ? "capture" : "playback",
1289 dpcm->be->dai_link->name);
1291 if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE)
1294 dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n",
1295 stream ? "capture" : "playback", fe->dai_link->name,
1296 stream ? "<-" : "->", dpcm->be->dai_link->name);
1298 /* BEs still alive need new FE */
1299 dpcm_be_reparent(fe, dpcm->be, stream);
1301 #ifdef CONFIG_DEBUG_FS
1302 debugfs_remove(dpcm->debugfs_state);
1304 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
1305 list_del(&dpcm->list_be);
1306 list_del(&dpcm->list_fe);
1307 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
1312 /* get BE for DAI widget and stream */
1313 static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card,
1314 struct snd_soc_dapm_widget *widget, int stream)
1316 struct snd_soc_pcm_runtime *be;
1317 struct snd_soc_dai *dai;
1320 dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name);
1322 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1323 for_each_card_rtds(card, be) {
1325 if (!be->dai_link->no_pcm)
1328 dev_dbg(card->dev, "ASoC: try BE : %s\n",
1329 be->cpu_dai->playback_widget ?
1330 be->cpu_dai->playback_widget->name : "(not set)");
1332 if (be->cpu_dai->playback_widget == widget)
1335 for_each_rtd_codec_dai(be, i, dai) {
1336 if (dai->playback_widget == widget)
1342 for_each_card_rtds(card, be) {
1344 if (!be->dai_link->no_pcm)
1347 dev_dbg(card->dev, "ASoC: try BE %s\n",
1348 be->cpu_dai->capture_widget ?
1349 be->cpu_dai->capture_widget->name : "(not set)");
1351 if (be->cpu_dai->capture_widget == widget)
1354 for_each_rtd_codec_dai(be, i, dai) {
1355 if (dai->capture_widget == widget)
1361 /* dai link name and stream name set correctly ? */
1362 dev_err(card->dev, "ASoC: can't get %s BE for %s\n",
1363 stream ? "capture" : "playback", widget->name);
1367 static inline struct snd_soc_dapm_widget *
1368 dai_get_widget(struct snd_soc_dai *dai, int stream)
1370 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1371 return dai->playback_widget;
1373 return dai->capture_widget;
1376 static int widget_in_list(struct snd_soc_dapm_widget_list *list,
1377 struct snd_soc_dapm_widget *widget)
1381 for (i = 0; i < list->num_widgets; i++) {
1382 if (widget == list->widgets[i])
1389 static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget,
1390 enum snd_soc_dapm_direction dir)
1392 struct snd_soc_card *card = widget->dapm->card;
1393 struct snd_soc_pcm_runtime *rtd;
1394 struct snd_soc_dai *dai;
1397 if (dir == SND_SOC_DAPM_DIR_OUT) {
1398 for_each_card_rtds(card, rtd) {
1399 if (!rtd->dai_link->no_pcm)
1402 if (rtd->cpu_dai->playback_widget == widget)
1405 for_each_rtd_codec_dai(rtd, i, dai) {
1406 if (dai->playback_widget == widget)
1410 } else { /* SND_SOC_DAPM_DIR_IN */
1411 for_each_card_rtds(card, rtd) {
1412 if (!rtd->dai_link->no_pcm)
1415 if (rtd->cpu_dai->capture_widget == widget)
1418 for_each_rtd_codec_dai(rtd, i, dai) {
1419 if (dai->capture_widget == widget)
1428 int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
1429 int stream, struct snd_soc_dapm_widget_list **list)
1431 struct snd_soc_dai *cpu_dai = fe->cpu_dai;
1434 /* get number of valid DAI paths and their widgets */
1435 paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list,
1436 dpcm_end_walk_at_be);
1438 dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths,
1439 stream ? "capture" : "playback");
1444 static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
1445 struct snd_soc_dapm_widget_list **list_)
1447 struct snd_soc_dpcm *dpcm;
1448 struct snd_soc_dapm_widget_list *list = *list_;
1449 struct snd_soc_dapm_widget *widget;
1450 struct snd_soc_dai *dai;
1453 /* Destroy any old FE <--> BE connections */
1454 for_each_dpcm_be(fe, stream, dpcm) {
1457 /* is there a valid CPU DAI widget for this BE */
1458 widget = dai_get_widget(dpcm->be->cpu_dai, stream);
1460 /* prune the BE if it's no longer in our active list */
1461 if (widget && widget_in_list(list, widget))
1464 /* is there a valid CODEC DAI widget for this BE */
1465 for_each_rtd_codec_dai(dpcm->be, i, dai) {
1466 widget = dai_get_widget(dai, stream);
1468 /* prune the BE if it's no longer in our active list */
1469 if (widget && widget_in_list(list, widget))
1473 dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
1474 stream ? "capture" : "playback",
1475 dpcm->be->dai_link->name, fe->dai_link->name);
1476 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
1477 dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1481 dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune);
1485 static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream,
1486 struct snd_soc_dapm_widget_list **list_)
1488 struct snd_soc_card *card = fe->card;
1489 struct snd_soc_dapm_widget_list *list = *list_;
1490 struct snd_soc_pcm_runtime *be;
1491 int i, new = 0, err;
1493 /* Create any new FE <--> BE connections */
1494 for (i = 0; i < list->num_widgets; i++) {
1496 switch (list->widgets[i]->id) {
1497 case snd_soc_dapm_dai_in:
1498 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
1501 case snd_soc_dapm_dai_out:
1502 if (stream != SNDRV_PCM_STREAM_CAPTURE)
1509 /* is there a valid BE rtd for this widget */
1510 be = dpcm_get_be(card, list->widgets[i], stream);
1512 dev_err(fe->dev, "ASoC: no BE found for %s\n",
1513 list->widgets[i]->name);
1517 /* make sure BE is a real BE */
1518 if (!be->dai_link->no_pcm)
1521 /* don't connect if FE is not running */
1522 if (!fe->dpcm[stream].runtime && !fe->fe_compr)
1525 /* newly connected FE and BE */
1526 err = dpcm_be_connect(fe, be, stream);
1528 dev_err(fe->dev, "ASoC: can't connect %s\n",
1529 list->widgets[i]->name);
1531 } else if (err == 0) /* already connected */
1535 be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE;
1539 dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new);
1544 * Find the corresponding BE DAIs that source or sink audio to this
1547 int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
1548 int stream, struct snd_soc_dapm_widget_list **list, int new)
1551 return dpcm_add_paths(fe, stream, list);
1553 return dpcm_prune_paths(fe, stream, list);
1556 void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream)
1558 struct snd_soc_dpcm *dpcm;
1559 unsigned long flags;
1561 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
1562 for_each_dpcm_be(fe, stream, dpcm)
1563 dpcm->be->dpcm[stream].runtime_update =
1564 SND_SOC_DPCM_UPDATE_NO;
1565 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
1568 static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe,
1571 struct snd_soc_dpcm *dpcm;
1573 /* disable any enabled and non active backends */
1574 for_each_dpcm_be(fe, stream, dpcm) {
1576 struct snd_soc_pcm_runtime *be = dpcm->be;
1577 struct snd_pcm_substream *be_substream =
1578 snd_soc_dpcm_get_substream(be, stream);
1580 if (be->dpcm[stream].users == 0)
1581 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
1582 stream ? "capture" : "playback",
1583 be->dpcm[stream].state);
1585 if (--be->dpcm[stream].users != 0)
1588 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1591 soc_pcm_close(be_substream);
1592 be_substream->runtime = NULL;
1593 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1597 int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream)
1599 struct snd_soc_dpcm *dpcm;
1602 /* only startup BE DAIs that are either sinks or sources to this FE DAI */
1603 for_each_dpcm_be(fe, stream, dpcm) {
1605 struct snd_soc_pcm_runtime *be = dpcm->be;
1606 struct snd_pcm_substream *be_substream =
1607 snd_soc_dpcm_get_substream(be, stream);
1609 if (!be_substream) {
1610 dev_err(be->dev, "ASoC: no backend %s stream\n",
1611 stream ? "capture" : "playback");
1615 /* is this op for this BE ? */
1616 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1619 /* first time the dpcm is open ? */
1620 if (be->dpcm[stream].users == DPCM_MAX_BE_USERS)
1621 dev_err(be->dev, "ASoC: too many users %s at open %d\n",
1622 stream ? "capture" : "playback",
1623 be->dpcm[stream].state);
1625 if (be->dpcm[stream].users++ != 0)
1628 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) &&
1629 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE))
1632 dev_dbg(be->dev, "ASoC: open %s BE %s\n",
1633 stream ? "capture" : "playback", be->dai_link->name);
1635 be_substream->runtime = be->dpcm[stream].runtime;
1636 err = soc_pcm_open(be_substream);
1638 dev_err(be->dev, "ASoC: BE open failed %d\n", err);
1639 be->dpcm[stream].users--;
1640 if (be->dpcm[stream].users < 0)
1641 dev_err(be->dev, "ASoC: no users %s at unwind %d\n",
1642 stream ? "capture" : "playback",
1643 be->dpcm[stream].state);
1645 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1649 be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1656 /* disable any enabled and non active backends */
1657 for_each_dpcm_be_rollback(fe, stream, dpcm) {
1658 struct snd_soc_pcm_runtime *be = dpcm->be;
1659 struct snd_pcm_substream *be_substream =
1660 snd_soc_dpcm_get_substream(be, stream);
1662 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
1665 if (be->dpcm[stream].users == 0)
1666 dev_err(be->dev, "ASoC: no users %s at close %d\n",
1667 stream ? "capture" : "playback",
1668 be->dpcm[stream].state);
1670 if (--be->dpcm[stream].users != 0)
1673 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)
1676 soc_pcm_close(be_substream);
1677 be_substream->runtime = NULL;
1678 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
1684 static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
1685 struct snd_soc_pcm_stream *stream)
1687 runtime->hw.rate_min = stream->rate_min;
1688 runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX);
1689 runtime->hw.channels_min = stream->channels_min;
1690 runtime->hw.channels_max = stream->channels_max;
1691 if (runtime->hw.formats)
1692 runtime->hw.formats &= stream->formats;
1694 runtime->hw.formats = stream->formats;
1695 runtime->hw.rates = stream->rates;
1698 static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream,
1701 struct snd_soc_pcm_runtime *fe = substream->private_data;
1702 struct snd_soc_dpcm *dpcm;
1703 struct snd_soc_dai *dai;
1704 int stream = substream->stream;
1706 if (!fe->dai_link->dpcm_merged_format)
1710 * It returns merged BE codec format
1711 * if FE want to use it (= dpcm_merged_format)
1714 for_each_dpcm_be(fe, stream, dpcm) {
1715 struct snd_soc_pcm_runtime *be = dpcm->be;
1716 struct snd_soc_dai_driver *codec_dai_drv;
1717 struct snd_soc_pcm_stream *codec_stream;
1720 for_each_rtd_codec_dai(be, i, dai) {
1722 * Skip CODECs which don't support the current stream
1723 * type. See soc_pcm_init_runtime_hw() for more details
1725 if (!snd_soc_dai_stream_valid(dai, stream))
1728 codec_dai_drv = dai->driver;
1729 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1730 codec_stream = &codec_dai_drv->playback;
1732 codec_stream = &codec_dai_drv->capture;
1734 *formats &= codec_stream->formats;
1739 static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
1740 unsigned int *channels_min,
1741 unsigned int *channels_max)
1743 struct snd_soc_pcm_runtime *fe = substream->private_data;
1744 struct snd_soc_dpcm *dpcm;
1745 int stream = substream->stream;
1747 if (!fe->dai_link->dpcm_merged_chan)
1751 * It returns merged BE codec channel;
1752 * if FE want to use it (= dpcm_merged_chan)
1755 for_each_dpcm_be(fe, stream, dpcm) {
1756 struct snd_soc_pcm_runtime *be = dpcm->be;
1757 struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver;
1758 struct snd_soc_dai_driver *codec_dai_drv;
1759 struct snd_soc_pcm_stream *codec_stream;
1760 struct snd_soc_pcm_stream *cpu_stream;
1762 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1763 cpu_stream = &cpu_dai_drv->playback;
1765 cpu_stream = &cpu_dai_drv->capture;
1767 *channels_min = max(*channels_min, cpu_stream->channels_min);
1768 *channels_max = min(*channels_max, cpu_stream->channels_max);
1771 * chan min/max cannot be enforced if there are multiple CODEC
1772 * DAIs connected to a single CPU DAI, use CPU DAI's directly
1774 if (be->num_codecs == 1) {
1775 codec_dai_drv = be->codec_dais[0]->driver;
1777 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1778 codec_stream = &codec_dai_drv->playback;
1780 codec_stream = &codec_dai_drv->capture;
1782 *channels_min = max(*channels_min,
1783 codec_stream->channels_min);
1784 *channels_max = min(*channels_max,
1785 codec_stream->channels_max);
1790 static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream,
1791 unsigned int *rates,
1792 unsigned int *rate_min,
1793 unsigned int *rate_max)
1795 struct snd_soc_pcm_runtime *fe = substream->private_data;
1796 struct snd_soc_dpcm *dpcm;
1797 int stream = substream->stream;
1799 if (!fe->dai_link->dpcm_merged_rate)
1803 * It returns merged BE codec channel;
1804 * if FE want to use it (= dpcm_merged_chan)
1807 for_each_dpcm_be(fe, stream, dpcm) {
1808 struct snd_soc_pcm_runtime *be = dpcm->be;
1809 struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver;
1810 struct snd_soc_dai_driver *codec_dai_drv;
1811 struct snd_soc_pcm_stream *codec_stream;
1812 struct snd_soc_pcm_stream *cpu_stream;
1813 struct snd_soc_dai *dai;
1816 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1817 cpu_stream = &cpu_dai_drv->playback;
1819 cpu_stream = &cpu_dai_drv->capture;
1821 *rate_min = max(*rate_min, cpu_stream->rate_min);
1822 *rate_max = min_not_zero(*rate_max, cpu_stream->rate_max);
1823 *rates = snd_pcm_rate_mask_intersect(*rates, cpu_stream->rates);
1825 for_each_rtd_codec_dai(be, i, dai) {
1827 * Skip CODECs which don't support the current stream
1828 * type. See soc_pcm_init_runtime_hw() for more details
1830 if (!snd_soc_dai_stream_valid(dai, stream))
1833 codec_dai_drv = dai->driver;
1834 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1835 codec_stream = &codec_dai_drv->playback;
1837 codec_stream = &codec_dai_drv->capture;
1839 *rate_min = max(*rate_min, codec_stream->rate_min);
1840 *rate_max = min_not_zero(*rate_max,
1841 codec_stream->rate_max);
1842 *rates = snd_pcm_rate_mask_intersect(*rates,
1843 codec_stream->rates);
1848 static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
1850 struct snd_pcm_runtime *runtime = substream->runtime;
1851 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1852 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1853 struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver;
1855 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1856 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);
1858 dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture);
1860 dpcm_runtime_merge_format(substream, &runtime->hw.formats);
1861 dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min,
1862 &runtime->hw.channels_max);
1863 dpcm_runtime_merge_rate(substream, &runtime->hw.rates,
1864 &runtime->hw.rate_min, &runtime->hw.rate_max);
1867 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd);
1869 /* Set FE's runtime_update state; the state is protected via PCM stream lock
1870 * for avoiding the race with trigger callback.
1871 * If the state is unset and a trigger is pending while the previous operation,
1872 * process the pending trigger action here.
1874 static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe,
1875 int stream, enum snd_soc_dpcm_update state)
1877 struct snd_pcm_substream *substream =
1878 snd_soc_dpcm_get_substream(fe, stream);
1880 snd_pcm_stream_lock_irq(substream);
1881 if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) {
1882 dpcm_fe_dai_do_trigger(substream,
1883 fe->dpcm[stream].trigger_pending - 1);
1884 fe->dpcm[stream].trigger_pending = 0;
1886 fe->dpcm[stream].runtime_update = state;
1887 snd_pcm_stream_unlock_irq(substream);
1890 static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
1893 struct snd_soc_dpcm *dpcm;
1894 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1895 struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai;
1898 /* apply symmetry for FE */
1899 if (soc_pcm_has_symmetry(fe_substream))
1900 fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1902 /* Symmetry only applies if we've got an active stream. */
1903 if (fe_cpu_dai->active) {
1904 err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai);
1909 /* apply symmetry for BE */
1910 for_each_dpcm_be(fe, stream, dpcm) {
1911 struct snd_soc_pcm_runtime *be = dpcm->be;
1912 struct snd_pcm_substream *be_substream =
1913 snd_soc_dpcm_get_substream(be, stream);
1914 struct snd_soc_pcm_runtime *rtd;
1915 struct snd_soc_dai *codec_dai;
1918 /* A backend may not have the requested substream */
1922 rtd = be_substream->private_data;
1923 if (rtd->dai_link->be_hw_params_fixup)
1926 if (soc_pcm_has_symmetry(be_substream))
1927 be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1929 /* Symmetry only applies if we've got an active stream. */
1930 if (rtd->cpu_dai->active) {
1931 err = soc_pcm_apply_symmetry(fe_substream,
1937 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1938 if (codec_dai->active) {
1939 err = soc_pcm_apply_symmetry(fe_substream,
1950 static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
1952 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
1953 struct snd_pcm_runtime *runtime = fe_substream->runtime;
1954 int stream = fe_substream->stream, ret = 0;
1956 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
1958 ret = dpcm_be_dai_startup(fe, fe_substream->stream);
1960 dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret);
1964 dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name);
1966 /* start the DAI frontend */
1967 ret = soc_pcm_open(fe_substream);
1969 dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret);
1973 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
1975 dpcm_set_fe_runtime(fe_substream);
1976 snd_pcm_limit_hw_rates(runtime);
1978 ret = dpcm_apply_symmetry(fe_substream, stream);
1980 dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n",
1985 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
1989 dpcm_be_dai_startup_unwind(fe, fe_substream->stream);
1991 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
1995 int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
1997 struct snd_soc_dpcm *dpcm;
1999 /* only shutdown BEs that are either sinks or sources to this FE DAI */
2000 for_each_dpcm_be(fe, stream, dpcm) {
2002 struct snd_soc_pcm_runtime *be = dpcm->be;
2003 struct snd_pcm_substream *be_substream =
2004 snd_soc_dpcm_get_substream(be, stream);
2006 /* is this op for this BE ? */
2007 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2010 if (be->dpcm[stream].users == 0)
2011 dev_err(be->dev, "ASoC: no users %s at close - state %d\n",
2012 stream ? "capture" : "playback",
2013 be->dpcm[stream].state);
2015 if (--be->dpcm[stream].users != 0)
2018 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2019 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) {
2020 soc_pcm_hw_free(be_substream);
2021 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2024 dev_dbg(be->dev, "ASoC: close BE %s\n",
2025 be->dai_link->name);
2027 soc_pcm_close(be_substream);
2028 be_substream->runtime = NULL;
2030 be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
2035 static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream)
2037 struct snd_soc_pcm_runtime *fe = substream->private_data;
2038 int stream = substream->stream;
2040 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2042 /* shutdown the BEs */
2043 dpcm_be_dai_shutdown(fe, substream->stream);
2045 dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name);
2047 /* now shutdown the frontend */
2048 soc_pcm_close(substream);
2050 /* run the stream event for each BE */
2051 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
2053 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
2054 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2058 int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream)
2060 struct snd_soc_dpcm *dpcm;
2062 /* only hw_params backends that are either sinks or sources
2063 * to this frontend DAI */
2064 for_each_dpcm_be(fe, stream, dpcm) {
2066 struct snd_soc_pcm_runtime *be = dpcm->be;
2067 struct snd_pcm_substream *be_substream =
2068 snd_soc_dpcm_get_substream(be, stream);
2070 /* is this op for this BE ? */
2071 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2074 /* only free hw when no longer used - check all FEs */
2075 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2078 /* do not free hw if this BE is used by other FE */
2079 if (be->dpcm[stream].users > 1)
2082 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2083 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2084 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2085 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) &&
2086 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2087 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2090 dev_dbg(be->dev, "ASoC: hw_free BE %s\n",
2091 be->dai_link->name);
2093 soc_pcm_hw_free(be_substream);
2095 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2101 static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream)
2103 struct snd_soc_pcm_runtime *fe = substream->private_data;
2104 int err, stream = substream->stream;
2106 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2107 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2109 dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name);
2111 /* call hw_free on the frontend */
2112 err = soc_pcm_hw_free(substream);
2114 dev_err(fe->dev,"ASoC: hw_free FE %s failed\n",
2115 fe->dai_link->name);
2117 /* only hw_params backends that are either sinks or sources
2118 * to this frontend DAI */
2119 err = dpcm_be_dai_hw_free(fe, stream);
2121 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE;
2122 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2124 mutex_unlock(&fe->card->mutex);
2128 int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream)
2130 struct snd_soc_dpcm *dpcm;
2133 for_each_dpcm_be(fe, stream, dpcm) {
2135 struct snd_soc_pcm_runtime *be = dpcm->be;
2136 struct snd_pcm_substream *be_substream =
2137 snd_soc_dpcm_get_substream(be, stream);
2139 /* is this op for this BE ? */
2140 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2143 /* copy params for each dpcm */
2144 memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params,
2145 sizeof(struct snd_pcm_hw_params));
2147 /* perform any hw_params fixups */
2148 if (be->dai_link->be_hw_params_fixup) {
2149 ret = be->dai_link->be_hw_params_fixup(be,
2153 "ASoC: hw_params BE fixup failed %d\n",
2159 /* only allow hw_params() if no connected FEs are running */
2160 if (!snd_soc_dpcm_can_be_params(fe, be, stream))
2163 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2164 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2165 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE))
2168 dev_dbg(be->dev, "ASoC: hw_params BE %s\n",
2169 be->dai_link->name);
2171 ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params);
2173 dev_err(dpcm->be->dev,
2174 "ASoC: hw_params BE failed %d\n", ret);
2178 be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2183 /* disable any enabled and non active backends */
2184 for_each_dpcm_be_rollback(fe, stream, dpcm) {
2185 struct snd_soc_pcm_runtime *be = dpcm->be;
2186 struct snd_pcm_substream *be_substream =
2187 snd_soc_dpcm_get_substream(be, stream);
2189 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2192 /* only allow hw_free() if no connected FEs are running */
2193 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2196 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) &&
2197 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2198 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) &&
2199 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2202 soc_pcm_hw_free(be_substream);
2208 static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream,
2209 struct snd_pcm_hw_params *params)
2211 struct snd_soc_pcm_runtime *fe = substream->private_data;
2212 int ret, stream = substream->stream;
2214 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2215 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2217 memcpy(&fe->dpcm[substream->stream].hw_params, params,
2218 sizeof(struct snd_pcm_hw_params));
2219 ret = dpcm_be_dai_hw_params(fe, substream->stream);
2221 dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret);
2225 dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n",
2226 fe->dai_link->name, params_rate(params),
2227 params_channels(params), params_format(params));
2229 /* call hw_params on the frontend */
2230 ret = soc_pcm_hw_params(substream, params);
2232 dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret);
2233 dpcm_be_dai_hw_free(fe, stream);
2235 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS;
2238 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2239 mutex_unlock(&fe->card->mutex);
2243 static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm,
2244 struct snd_pcm_substream *substream, int cmd)
2248 dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n",
2249 dpcm->be->dai_link->name, cmd);
2251 ret = soc_pcm_trigger(substream, cmd);
2253 dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret);
2258 int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
2261 struct snd_soc_dpcm *dpcm;
2264 for_each_dpcm_be(fe, stream, dpcm) {
2266 struct snd_soc_pcm_runtime *be = dpcm->be;
2267 struct snd_pcm_substream *be_substream =
2268 snd_soc_dpcm_get_substream(be, stream);
2270 /* is this op for this BE ? */
2271 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2275 case SNDRV_PCM_TRIGGER_START:
2276 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
2277 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP))
2280 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2284 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2286 case SNDRV_PCM_TRIGGER_RESUME:
2287 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2290 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2294 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2296 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2297 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
2300 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2304 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2306 case SNDRV_PCM_TRIGGER_STOP:
2307 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2310 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2313 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2317 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2319 case SNDRV_PCM_TRIGGER_SUSPEND:
2320 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2323 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2326 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2330 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
2332 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2333 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2336 if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream))
2339 ret = dpcm_do_trigger(dpcm, be_substream, cmd);
2343 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2350 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
2352 static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
2354 struct snd_soc_pcm_runtime *fe = substream->private_data;
2355 int stream = substream->stream, ret;
2356 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2358 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
2361 case SND_SOC_DPCM_TRIGGER_PRE:
2362 /* call trigger on the frontend before the backend. */
2364 dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
2365 fe->dai_link->name, cmd);
2367 ret = soc_pcm_trigger(substream, cmd);
2369 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2373 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2375 case SND_SOC_DPCM_TRIGGER_POST:
2376 /* call trigger on the frontend after the backend. */
2378 ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
2380 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2384 dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
2385 fe->dai_link->name, cmd);
2387 ret = soc_pcm_trigger(substream, cmd);
2389 case SND_SOC_DPCM_TRIGGER_BESPOKE:
2390 /* bespoke trigger() - handles both FE and BEs */
2392 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n",
2393 fe->dai_link->name, cmd);
2395 ret = soc_pcm_bespoke_trigger(substream, cmd);
2397 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2402 dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
2403 fe->dai_link->name);
2409 case SNDRV_PCM_TRIGGER_START:
2410 case SNDRV_PCM_TRIGGER_RESUME:
2411 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
2412 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
2414 case SNDRV_PCM_TRIGGER_STOP:
2415 case SNDRV_PCM_TRIGGER_SUSPEND:
2416 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
2418 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
2419 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
2424 fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
2428 static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd)
2430 struct snd_soc_pcm_runtime *fe = substream->private_data;
2431 int stream = substream->stream;
2433 /* if FE's runtime_update is already set, we're in race;
2434 * process this trigger later at exit
2436 if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) {
2437 fe->dpcm[stream].trigger_pending = cmd + 1;
2438 return 0; /* delayed, assuming it's successful */
2441 /* we're alone, let's trigger */
2442 return dpcm_fe_dai_do_trigger(substream, cmd);
2445 int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream)
2447 struct snd_soc_dpcm *dpcm;
2450 for_each_dpcm_be(fe, stream, dpcm) {
2452 struct snd_soc_pcm_runtime *be = dpcm->be;
2453 struct snd_pcm_substream *be_substream =
2454 snd_soc_dpcm_get_substream(be, stream);
2456 /* is this op for this BE ? */
2457 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
2460 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) &&
2461 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
2462 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
2465 dev_dbg(be->dev, "ASoC: prepare BE %s\n",
2466 be->dai_link->name);
2468 ret = soc_pcm_prepare(be_substream);
2470 dev_err(be->dev, "ASoC: backend prepare failed %d\n",
2475 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2480 static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream)
2482 struct snd_soc_pcm_runtime *fe = substream->private_data;
2483 int stream = substream->stream, ret = 0;
2485 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2487 dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name);
2489 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE);
2491 /* there is no point preparing this FE if there are no BEs */
2492 if (list_empty(&fe->dpcm[stream].be_clients)) {
2493 dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n",
2494 fe->dai_link->name);
2499 ret = dpcm_be_dai_prepare(fe, substream->stream);
2503 /* call prepare on the frontend */
2504 ret = soc_pcm_prepare(substream);
2506 dev_err(fe->dev,"ASoC: prepare FE %s failed\n",
2507 fe->dai_link->name);
2511 /* run the stream event for each BE */
2512 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
2513 fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
2516 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2517 mutex_unlock(&fe->card->mutex);
2522 static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
2523 unsigned int cmd, void *arg)
2525 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2526 struct snd_soc_component *component;
2527 struct snd_soc_rtdcom_list *rtdcom;
2529 for_each_rtdcom(rtd, rtdcom) {
2530 component = rtdcom->component;
2532 if (!component->driver->ops ||
2533 !component->driver->ops->ioctl)
2536 /* FIXME: use 1st ioctl */
2537 return component->driver->ops->ioctl(substream, cmd, arg);
2540 return snd_pcm_lib_ioctl(substream, cmd, arg);
2543 static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream)
2545 struct snd_pcm_substream *substream =
2546 snd_soc_dpcm_get_substream(fe, stream);
2547 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2550 dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n",
2551 stream ? "capture" : "playback", fe->dai_link->name);
2553 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2554 /* call bespoke trigger - FE takes care of all BE triggers */
2555 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n",
2556 fe->dai_link->name);
2558 err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP);
2560 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
2562 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n",
2563 fe->dai_link->name);
2565 err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP);
2567 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err);
2570 err = dpcm_be_dai_hw_free(fe, stream);
2572 dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err);
2574 err = dpcm_be_dai_shutdown(fe, stream);
2576 dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err);
2578 /* run the stream event for each BE */
2579 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2584 static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream)
2586 struct snd_pcm_substream *substream =
2587 snd_soc_dpcm_get_substream(fe, stream);
2588 struct snd_soc_dpcm *dpcm;
2589 enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
2591 unsigned long flags;
2593 dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n",
2594 stream ? "capture" : "playback", fe->dai_link->name);
2596 /* Only start the BE if the FE is ready */
2597 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE ||
2598 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE)
2601 /* startup must always be called for new BEs */
2602 ret = dpcm_be_dai_startup(fe, stream);
2606 /* keep going if FE state is > open */
2607 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN)
2610 ret = dpcm_be_dai_hw_params(fe, stream);
2614 /* keep going if FE state is > hw_params */
2615 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS)
2619 ret = dpcm_be_dai_prepare(fe, stream);
2623 /* run the stream event for each BE */
2624 dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP);
2626 /* keep going if FE state is > prepare */
2627 if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE ||
2628 fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP)
2631 if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) {
2632 /* call trigger on the frontend - FE takes care of all BE triggers */
2633 dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n",
2634 fe->dai_link->name);
2636 ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START);
2638 dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret);
2642 dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n",
2643 fe->dai_link->name);
2645 ret = dpcm_be_dai_trigger(fe, stream,
2646 SNDRV_PCM_TRIGGER_START);
2648 dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
2656 dpcm_be_dai_hw_free(fe, stream);
2658 dpcm_be_dai_shutdown(fe, stream);
2660 /* disconnect any non started BEs */
2661 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
2662 for_each_dpcm_be(fe, stream, dpcm) {
2663 struct snd_soc_pcm_runtime *be = dpcm->be;
2664 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
2665 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2667 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
2672 static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream)
2676 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
2677 ret = dpcm_run_update_startup(fe, stream);
2679 dev_err(fe->dev, "ASoC: failed to startup some BEs\n");
2680 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2685 static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream)
2689 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE);
2690 ret = dpcm_run_update_shutdown(fe, stream);
2692 dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n");
2693 dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO);
2698 static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new)
2700 struct snd_soc_dapm_widget_list *list;
2703 if (!fe->dai_link->dynamic)
2706 /* only check active links */
2707 if (!fe->cpu_dai->active)
2710 /* DAPM sync will call this to update DSP paths */
2711 dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n",
2712 new ? "new" : "old", fe->dai_link->name);
2714 /* skip if FE doesn't have playback capability */
2715 if (!fe->cpu_dai->driver->playback.channels_min ||
2716 !fe->codec_dai->driver->playback.channels_min)
2719 /* skip if FE isn't currently playing */
2720 if (!fe->cpu_dai->playback_active || !fe->codec_dai->playback_active)
2723 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
2725 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2726 fe->dai_link->name, "playback");
2730 /* update any playback paths */
2731 count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, new);
2734 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2736 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
2738 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
2739 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
2742 dpcm_path_put(&list);
2745 /* skip if FE doesn't have capture capability */
2746 if (!fe->cpu_dai->driver->capture.channels_min ||
2747 !fe->codec_dai->driver->capture.channels_min)
2750 /* skip if FE isn't currently capturing */
2751 if (!fe->cpu_dai->capture_active || !fe->codec_dai->capture_active)
2754 paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);
2756 dev_warn(fe->dev, "ASoC: %s no valid %s path\n",
2757 fe->dai_link->name, "capture");
2761 /* update any old capture paths */
2762 count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, new);
2765 dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2767 dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE);
2769 dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
2770 dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
2773 dpcm_path_put(&list);
2778 /* Called by DAPM mixer/mux changes to update audio routing between PCMs and
2781 int soc_dpcm_runtime_update(struct snd_soc_card *card)
2783 struct snd_soc_pcm_runtime *fe;
2786 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2787 /* shutdown all old paths first */
2788 for_each_card_rtds(card, fe) {
2789 ret = soc_dpcm_fe_runtime_update(fe, 0);
2794 /* bring new paths up */
2795 for_each_card_rtds(card, fe) {
2796 ret = soc_dpcm_fe_runtime_update(fe, 1);
2802 mutex_unlock(&card->mutex);
2805 int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
2807 struct snd_soc_dpcm *dpcm;
2808 struct snd_soc_dai *dai;
2810 for_each_dpcm_be(fe, SNDRV_PCM_STREAM_PLAYBACK, dpcm) {
2812 struct snd_soc_pcm_runtime *be = dpcm->be;
2815 if (be->dai_link->ignore_suspend)
2818 for_each_rtd_codec_dai(be, i, dai) {
2819 struct snd_soc_dai_driver *drv = dai->driver;
2821 dev_dbg(be->dev, "ASoC: BE digital mute %s\n",
2822 be->dai_link->name);
2824 if (drv->ops && drv->ops->digital_mute &&
2825 dai->playback_active)
2826 drv->ops->digital_mute(dai, mute);
2833 static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream)
2835 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2836 struct snd_soc_dpcm *dpcm;
2837 struct snd_soc_dapm_widget_list *list;
2839 int stream = fe_substream->stream;
2841 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2842 fe->dpcm[stream].runtime = fe_substream->runtime;
2844 ret = dpcm_path_get(fe, stream, &list);
2846 mutex_unlock(&fe->card->mutex);
2848 } else if (ret == 0) {
2849 dev_dbg(fe->dev, "ASoC: %s no valid %s route\n",
2850 fe->dai_link->name, stream ? "capture" : "playback");
2853 /* calculate valid and active FE <-> BE dpcms */
2854 dpcm_process_paths(fe, stream, &list, 1);
2856 ret = dpcm_fe_dai_startup(fe_substream);
2858 /* clean up all links */
2859 for_each_dpcm_be(fe, stream, dpcm)
2860 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2862 dpcm_be_disconnect(fe, stream);
2863 fe->dpcm[stream].runtime = NULL;
2866 dpcm_clear_pending_state(fe, stream);
2867 dpcm_path_put(&list);
2868 mutex_unlock(&fe->card->mutex);
2872 static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream)
2874 struct snd_soc_pcm_runtime *fe = fe_substream->private_data;
2875 struct snd_soc_dpcm *dpcm;
2876 int stream = fe_substream->stream, ret;
2878 mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
2879 ret = dpcm_fe_dai_shutdown(fe_substream);
2881 /* mark FE's links ready to prune */
2882 for_each_dpcm_be(fe, stream, dpcm)
2883 dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
2885 dpcm_be_disconnect(fe, stream);
2887 fe->dpcm[stream].runtime = NULL;
2888 mutex_unlock(&fe->card->mutex);
2892 static void soc_pcm_private_free(struct snd_pcm *pcm)
2894 struct snd_soc_pcm_runtime *rtd = pcm->private_data;
2895 struct snd_soc_rtdcom_list *rtdcom;
2896 struct snd_soc_component *component;
2898 /* need to sync the delayed work before releasing resources */
2899 flush_delayed_work(&rtd->delayed_work);
2900 for_each_rtdcom(rtd, rtdcom) {
2901 component = rtdcom->component;
2903 if (component->driver->pcm_free)
2904 component->driver->pcm_free(pcm);
2908 static int soc_rtdcom_ack(struct snd_pcm_substream *substream)
2910 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2911 struct snd_soc_rtdcom_list *rtdcom;
2912 struct snd_soc_component *component;
2914 for_each_rtdcom(rtd, rtdcom) {
2915 component = rtdcom->component;
2917 if (!component->driver->ops ||
2918 !component->driver->ops->ack)
2921 /* FIXME. it returns 1st ask now */
2922 return component->driver->ops->ack(substream);
2928 static int soc_rtdcom_copy_user(struct snd_pcm_substream *substream, int channel,
2929 unsigned long pos, void __user *buf,
2930 unsigned long bytes)
2932 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2933 struct snd_soc_rtdcom_list *rtdcom;
2934 struct snd_soc_component *component;
2936 for_each_rtdcom(rtd, rtdcom) {
2937 component = rtdcom->component;
2939 if (!component->driver->ops ||
2940 !component->driver->ops->copy_user)
2943 /* FIXME. it returns 1st copy now */
2944 return component->driver->ops->copy_user(substream, channel,
2951 static int soc_rtdcom_copy_kernel(struct snd_pcm_substream *substream, int channel,
2952 unsigned long pos, void *buf, unsigned long bytes)
2954 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2955 struct snd_soc_rtdcom_list *rtdcom;
2956 struct snd_soc_component *component;
2958 for_each_rtdcom(rtd, rtdcom) {
2959 component = rtdcom->component;
2961 if (!component->driver->ops ||
2962 !component->driver->ops->copy_kernel)
2965 /* FIXME. it returns 1st copy now */
2966 return component->driver->ops->copy_kernel(substream, channel,
2973 static int soc_rtdcom_fill_silence(struct snd_pcm_substream *substream, int channel,
2974 unsigned long pos, unsigned long bytes)
2976 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2977 struct snd_soc_rtdcom_list *rtdcom;
2978 struct snd_soc_component *component;
2980 for_each_rtdcom(rtd, rtdcom) {
2981 component = rtdcom->component;
2983 if (!component->driver->ops ||
2984 !component->driver->ops->fill_silence)
2987 /* FIXME. it returns 1st silence now */
2988 return component->driver->ops->fill_silence(substream, channel,
2995 static struct page *soc_rtdcom_page(struct snd_pcm_substream *substream,
2996 unsigned long offset)
2998 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2999 struct snd_soc_rtdcom_list *rtdcom;
3000 struct snd_soc_component *component;
3003 for_each_rtdcom(rtd, rtdcom) {
3004 component = rtdcom->component;
3006 if (!component->driver->ops ||
3007 !component->driver->ops->page)
3010 /* FIXME. it returns 1st page now */
3011 page = component->driver->ops->page(substream, offset);
3019 static int soc_rtdcom_mmap(struct snd_pcm_substream *substream,
3020 struct vm_area_struct *vma)
3022 struct snd_soc_pcm_runtime *rtd = substream->private_data;
3023 struct snd_soc_rtdcom_list *rtdcom;
3024 struct snd_soc_component *component;
3026 for_each_rtdcom(rtd, rtdcom) {
3027 component = rtdcom->component;
3029 if (!component->driver->ops ||
3030 !component->driver->ops->mmap)
3033 /* FIXME. it returns 1st mmap now */
3034 return component->driver->ops->mmap(substream, vma);
3040 /* create a new pcm */
3041 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
3043 struct snd_soc_dai *codec_dai;
3044 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3045 struct snd_soc_component *component;
3046 struct snd_soc_rtdcom_list *rtdcom;
3047 struct snd_pcm *pcm;
3049 int ret = 0, playback = 0, capture = 0;
3052 if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
3053 playback = rtd->dai_link->dpcm_playback;
3054 capture = rtd->dai_link->dpcm_capture;
3056 for_each_rtd_codec_dai(rtd, i, codec_dai) {
3057 if (codec_dai->driver->playback.channels_min)
3059 if (codec_dai->driver->capture.channels_min)
3063 capture = capture && cpu_dai->driver->capture.channels_min;
3064 playback = playback && cpu_dai->driver->playback.channels_min;
3067 if (rtd->dai_link->playback_only) {
3072 if (rtd->dai_link->capture_only) {
3077 /* create the PCM */
3078 if (rtd->dai_link->no_pcm) {
3079 snprintf(new_name, sizeof(new_name), "(%s)",
3080 rtd->dai_link->stream_name);
3082 ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
3083 playback, capture, &pcm);
3085 if (rtd->dai_link->dynamic)
3086 snprintf(new_name, sizeof(new_name), "%s (*)",
3087 rtd->dai_link->stream_name);
3089 snprintf(new_name, sizeof(new_name), "%s %s-%d",
3090 rtd->dai_link->stream_name,
3091 (rtd->num_codecs > 1) ?
3092 "multicodec" : rtd->codec_dai->name, num);
3094 ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback,
3098 dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n",
3099 rtd->dai_link->name);
3102 dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name);
3104 /* DAPM dai link stream work */
3105 INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
3107 pcm->nonatomic = rtd->dai_link->nonatomic;
3109 pcm->private_data = rtd;
3111 if (rtd->dai_link->no_pcm) {
3113 pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
3115 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
3119 /* ASoC PCM operations */
3120 if (rtd->dai_link->dynamic) {
3121 rtd->ops.open = dpcm_fe_dai_open;
3122 rtd->ops.hw_params = dpcm_fe_dai_hw_params;
3123 rtd->ops.prepare = dpcm_fe_dai_prepare;
3124 rtd->ops.trigger = dpcm_fe_dai_trigger;
3125 rtd->ops.hw_free = dpcm_fe_dai_hw_free;
3126 rtd->ops.close = dpcm_fe_dai_close;
3127 rtd->ops.pointer = soc_pcm_pointer;
3128 rtd->ops.ioctl = soc_pcm_ioctl;
3130 rtd->ops.open = soc_pcm_open;
3131 rtd->ops.hw_params = soc_pcm_hw_params;
3132 rtd->ops.prepare = soc_pcm_prepare;
3133 rtd->ops.trigger = soc_pcm_trigger;
3134 rtd->ops.hw_free = soc_pcm_hw_free;
3135 rtd->ops.close = soc_pcm_close;
3136 rtd->ops.pointer = soc_pcm_pointer;
3137 rtd->ops.ioctl = soc_pcm_ioctl;
3140 for_each_rtdcom(rtd, rtdcom) {
3141 const struct snd_pcm_ops *ops = rtdcom->component->driver->ops;
3147 rtd->ops.ack = soc_rtdcom_ack;
3149 rtd->ops.copy_user = soc_rtdcom_copy_user;
3150 if (ops->copy_kernel)
3151 rtd->ops.copy_kernel = soc_rtdcom_copy_kernel;
3152 if (ops->fill_silence)
3153 rtd->ops.fill_silence = soc_rtdcom_fill_silence;
3155 rtd->ops.page = soc_rtdcom_page;
3157 rtd->ops.mmap = soc_rtdcom_mmap;
3161 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
3164 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops);
3166 for_each_rtdcom(rtd, rtdcom) {
3167 component = rtdcom->component;
3169 if (!component->driver->pcm_new)
3172 ret = component->driver->pcm_new(rtd);
3174 dev_err(component->dev,
3175 "ASoC: pcm constructor failed: %d\n",
3181 pcm->private_free = soc_pcm_private_free;
3182 pcm->no_device_suspend = true;
3184 dev_info(rtd->card->dev, "%s <-> %s mapping ok\n",
3185 (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name,
3190 /* is the current PCM operation for this FE ? */
3191 int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream)
3193 if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE)
3197 EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update);
3199 /* is the current PCM operation for this BE ? */
3200 int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe,
3201 struct snd_soc_pcm_runtime *be, int stream)
3203 if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) ||
3204 ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) &&
3205 be->dpcm[stream].runtime_update))
3209 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update);
3211 /* get the substream for this BE */
3212 struct snd_pcm_substream *
3213 snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream)
3215 return be->pcm->streams[stream].substream;
3217 EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
3219 /* get the BE runtime state */
3220 enum snd_soc_dpcm_state
3221 snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream)
3223 return be->dpcm[stream].state;
3225 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state);
3227 /* set the BE runtime state */
3228 void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be,
3229 int stream, enum snd_soc_dpcm_state state)
3231 be->dpcm[stream].state = state;
3233 EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state);
3236 * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE
3237 * are not running, paused or suspended for the specified stream direction.
3239 int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe,
3240 struct snd_soc_pcm_runtime *be, int stream)
3242 struct snd_soc_dpcm *dpcm;
3245 unsigned long flags;
3247 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
3248 for_each_dpcm_fe(be, stream, dpcm) {
3253 state = dpcm->fe->dpcm[stream].state;
3254 if (state == SND_SOC_DPCM_STATE_START ||
3255 state == SND_SOC_DPCM_STATE_PAUSED ||
3256 state == SND_SOC_DPCM_STATE_SUSPEND) {
3261 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
3263 /* it's safe to free/stop this BE DAI */
3266 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop);
3269 * We can only change hw params a BE DAI if any of it's FE are not prepared,
3270 * running, paused or suspended for the specified stream direction.
3272 int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe,
3273 struct snd_soc_pcm_runtime *be, int stream)
3275 struct snd_soc_dpcm *dpcm;
3278 unsigned long flags;
3280 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
3281 for_each_dpcm_fe(be, stream, dpcm) {
3286 state = dpcm->fe->dpcm[stream].state;
3287 if (state == SND_SOC_DPCM_STATE_START ||
3288 state == SND_SOC_DPCM_STATE_PAUSED ||
3289 state == SND_SOC_DPCM_STATE_SUSPEND ||
3290 state == SND_SOC_DPCM_STATE_PREPARE) {
3295 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
3297 /* it's safe to change hw_params */
3300 EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params);
3302 #ifdef CONFIG_DEBUG_FS
3303 static const char *dpcm_state_string(enum snd_soc_dpcm_state state)
3306 case SND_SOC_DPCM_STATE_NEW:
3308 case SND_SOC_DPCM_STATE_OPEN:
3310 case SND_SOC_DPCM_STATE_HW_PARAMS:
3312 case SND_SOC_DPCM_STATE_PREPARE:
3314 case SND_SOC_DPCM_STATE_START:
3316 case SND_SOC_DPCM_STATE_STOP:
3318 case SND_SOC_DPCM_STATE_SUSPEND:
3320 case SND_SOC_DPCM_STATE_PAUSED:
3322 case SND_SOC_DPCM_STATE_HW_FREE:
3324 case SND_SOC_DPCM_STATE_CLOSE:
3331 static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe,
3332 int stream, char *buf, size_t size)
3334 struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params;
3335 struct snd_soc_dpcm *dpcm;
3337 unsigned long flags;
3340 offset += snprintf(buf + offset, size - offset,
3341 "[%s - %s]\n", fe->dai_link->name,
3342 stream ? "Capture" : "Playback");
3344 offset += snprintf(buf + offset, size - offset, "State: %s\n",
3345 dpcm_state_string(fe->dpcm[stream].state));
3347 if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3348 (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3349 offset += snprintf(buf + offset, size - offset,
3351 "Format = %s, Channels = %d, Rate = %d\n",
3352 snd_pcm_format_name(params_format(params)),
3353 params_channels(params),
3354 params_rate(params));
3357 offset += snprintf(buf + offset, size - offset, "Backends:\n");
3359 if (list_empty(&fe->dpcm[stream].be_clients)) {
3360 offset += snprintf(buf + offset, size - offset,
3361 " No active DSP links\n");
3365 spin_lock_irqsave(&fe->card->dpcm_lock, flags);
3366 for_each_dpcm_be(fe, stream, dpcm) {
3367 struct snd_soc_pcm_runtime *be = dpcm->be;
3368 params = &dpcm->hw_params;
3370 offset += snprintf(buf + offset, size - offset,
3371 "- %s\n", be->dai_link->name);
3373 offset += snprintf(buf + offset, size - offset,
3375 dpcm_state_string(be->dpcm[stream].state));
3377 if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) &&
3378 (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP))
3379 offset += snprintf(buf + offset, size - offset,
3380 " Hardware Params: "
3381 "Format = %s, Channels = %d, Rate = %d\n",
3382 snd_pcm_format_name(params_format(params)),
3383 params_channels(params),
3384 params_rate(params));
3386 spin_unlock_irqrestore(&fe->card->dpcm_lock, flags);
3391 static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf,
3392 size_t count, loff_t *ppos)
3394 struct snd_soc_pcm_runtime *fe = file->private_data;
3395 ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0;
3398 buf = kmalloc(out_count, GFP_KERNEL);
3402 if (fe->cpu_dai->driver->playback.channels_min)
3403 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK,
3404 buf + offset, out_count - offset);
3406 if (fe->cpu_dai->driver->capture.channels_min)
3407 offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE,
3408 buf + offset, out_count - offset);
3410 ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
3416 static const struct file_operations dpcm_state_fops = {
3417 .open = simple_open,
3418 .read = dpcm_state_read_file,
3419 .llseek = default_llseek,
3422 void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
3427 if (!rtd->card->debugfs_card_root)
3430 rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name,
3431 rtd->card->debugfs_card_root);
3432 if (!rtd->debugfs_dpcm_root) {
3434 "ASoC: Failed to create dpcm debugfs directory %s\n",
3435 rtd->dai_link->name);
3439 debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
3440 rtd, &dpcm_state_fops);