1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-core.c -- ALSA SoC Audio Layer
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 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
11 // with code, comments and ideas from :-
12 // Richard Purdie <richard@openedhand.com>
15 // o Add hw rules to enforce rates, etc.
16 // o More testing with other codecs/machines.
17 // o Add more codecs and platforms to ensure good API coverage.
18 // o Support TDM on PCM and I2S
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
25 #include <linux/bitops.h>
26 #include <linux/debugfs.h>
27 #include <linux/platform_device.h>
28 #include <linux/pinctrl/consumer.h>
29 #include <linux/ctype.h>
30 #include <linux/slab.h>
32 #include <linux/of_graph.h>
33 #include <linux/dmi.h>
34 #include <sound/core.h>
35 #include <sound/jack.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/soc.h>
39 #include <sound/soc-dpcm.h>
40 #include <sound/soc-topology.h>
41 #include <sound/initval.h>
43 #define CREATE_TRACE_POINTS
44 #include <trace/events/asoc.h>
48 #ifdef CONFIG_DEBUG_FS
49 struct dentry *snd_soc_debugfs_root;
50 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
53 static DEFINE_MUTEX(client_mutex);
54 static LIST_HEAD(component_list);
55 static LIST_HEAD(unbind_card_list);
57 #define for_each_component(component) \
58 list_for_each_entry(component, &component_list, list)
61 * This is a timeout to do a DAPM powerdown after a stream is closed().
62 * It can be used to eliminate pops between different playback streams, e.g.
63 * between two audio tracks.
65 static int pmdown_time = 5000;
66 module_param(pmdown_time, int, 0);
67 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
70 * If a DMI filed contain strings in this blacklist (e.g.
71 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
72 * as invalid and dropped when setting the card long name from DMI info.
74 static const char * const dmi_blacklist[] = {
75 "To be filled by OEM",
81 NULL, /* terminator */
84 static ssize_t pmdown_time_show(struct device *dev,
85 struct device_attribute *attr, char *buf)
87 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
89 return sprintf(buf, "%ld\n", rtd->pmdown_time);
92 static ssize_t pmdown_time_set(struct device *dev,
93 struct device_attribute *attr,
94 const char *buf, size_t count)
96 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
99 ret = kstrtol(buf, 10, &rtd->pmdown_time);
106 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
108 static struct attribute *soc_dev_attrs[] = {
109 &dev_attr_pmdown_time.attr,
113 static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
114 struct attribute *attr, int idx)
116 struct device *dev = kobj_to_dev(kobj);
117 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
119 if (attr == &dev_attr_pmdown_time.attr)
120 return attr->mode; /* always visible */
121 return rtd->num_codecs ? attr->mode : 0; /* enabled only with codec */
124 static const struct attribute_group soc_dapm_dev_group = {
125 .attrs = soc_dapm_dev_attrs,
126 .is_visible = soc_dev_attr_is_visible,
129 static const struct attribute_group soc_dev_group = {
130 .attrs = soc_dev_attrs,
131 .is_visible = soc_dev_attr_is_visible,
134 static const struct attribute_group *soc_dev_attr_groups[] = {
140 #ifdef CONFIG_DEBUG_FS
141 static void soc_init_component_debugfs(struct snd_soc_component *component)
143 if (!component->card->debugfs_card_root)
146 if (component->debugfs_prefix) {
149 name = kasprintf(GFP_KERNEL, "%s:%s",
150 component->debugfs_prefix, component->name);
152 component->debugfs_root = debugfs_create_dir(name,
153 component->card->debugfs_card_root);
157 component->debugfs_root = debugfs_create_dir(component->name,
158 component->card->debugfs_card_root);
161 if (!component->debugfs_root) {
162 dev_warn(component->dev,
163 "ASoC: Failed to create component debugfs directory\n");
167 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
168 component->debugfs_root);
171 static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
173 debugfs_remove_recursive(component->debugfs_root);
176 static int dai_list_show(struct seq_file *m, void *v)
178 struct snd_soc_component *component;
179 struct snd_soc_dai *dai;
181 mutex_lock(&client_mutex);
183 for_each_component(component)
184 for_each_component_dais(component, dai)
185 seq_printf(m, "%s\n", dai->name);
187 mutex_unlock(&client_mutex);
191 DEFINE_SHOW_ATTRIBUTE(dai_list);
193 static int component_list_show(struct seq_file *m, void *v)
195 struct snd_soc_component *component;
197 mutex_lock(&client_mutex);
199 for_each_component(component)
200 seq_printf(m, "%s\n", component->name);
202 mutex_unlock(&client_mutex);
206 DEFINE_SHOW_ATTRIBUTE(component_list);
208 static void soc_init_card_debugfs(struct snd_soc_card *card)
210 if (!snd_soc_debugfs_root)
213 card->debugfs_card_root = debugfs_create_dir(card->name,
214 snd_soc_debugfs_root);
215 if (!card->debugfs_card_root) {
217 "ASoC: Failed to create card debugfs directory\n");
221 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
222 card->debugfs_card_root,
224 if (!card->debugfs_pop_time)
226 "ASoC: Failed to create pop time debugfs file\n");
229 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
231 debugfs_remove_recursive(card->debugfs_card_root);
234 static void snd_soc_debugfs_init(void)
236 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
237 if (IS_ERR_OR_NULL(snd_soc_debugfs_root)) {
238 pr_warn("ASoC: Failed to create debugfs directory\n");
239 snd_soc_debugfs_root = NULL;
243 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
245 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
247 if (!debugfs_create_file("components", 0444, snd_soc_debugfs_root, NULL,
248 &component_list_fops))
249 pr_warn("ASoC: Failed to create component list debugfs file\n");
252 static void snd_soc_debugfs_exit(void)
254 debugfs_remove_recursive(snd_soc_debugfs_root);
259 static inline void soc_init_component_debugfs(
260 struct snd_soc_component *component)
264 static inline void soc_cleanup_component_debugfs(
265 struct snd_soc_component *component)
269 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
273 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
277 static inline void snd_soc_debugfs_init(void)
281 static inline void snd_soc_debugfs_exit(void)
287 static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime *rtd,
288 struct snd_soc_component *component)
290 struct snd_soc_rtdcom_list *rtdcom;
291 struct snd_soc_rtdcom_list *new_rtdcom;
293 for_each_rtdcom(rtd, rtdcom) {
294 /* already connected */
295 if (rtdcom->component == component)
299 new_rtdcom = kmalloc(sizeof(*new_rtdcom), GFP_KERNEL);
303 new_rtdcom->component = component;
304 INIT_LIST_HEAD(&new_rtdcom->list);
306 list_add_tail(&new_rtdcom->list, &rtd->component_list);
311 static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime *rtd)
313 struct snd_soc_rtdcom_list *rtdcom1, *rtdcom2;
315 for_each_rtdcom_safe(rtd, rtdcom1, rtdcom2)
318 INIT_LIST_HEAD(&rtd->component_list);
321 struct snd_soc_component *snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd,
322 const char *driver_name)
324 struct snd_soc_rtdcom_list *rtdcom;
329 for_each_rtdcom(rtd, rtdcom) {
330 const char *component_name = rtdcom->component->driver->name;
335 if ((component_name == driver_name) ||
336 strcmp(component_name, driver_name) == 0)
337 return rtdcom->component;
342 EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup);
344 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
345 const char *dai_link, int stream)
347 struct snd_soc_pcm_runtime *rtd;
349 for_each_card_rtds(card, rtd) {
350 if (rtd->dai_link->no_pcm &&
351 !strcmp(rtd->dai_link->name, dai_link))
352 return rtd->pcm->streams[stream].substream;
354 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
357 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
359 static const struct snd_soc_ops null_snd_soc_ops;
361 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
362 struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
364 struct snd_soc_pcm_runtime *rtd;
366 rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
370 INIT_LIST_HEAD(&rtd->component_list);
372 rtd->dai_link = dai_link;
373 if (!rtd->dai_link->ops)
374 rtd->dai_link->ops = &null_snd_soc_ops;
376 rtd->codec_dais = kcalloc(dai_link->num_codecs,
377 sizeof(struct snd_soc_dai *),
379 if (!rtd->codec_dais) {
387 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
389 kfree(rtd->codec_dais);
390 snd_soc_rtdcom_del_all(rtd);
394 static void soc_add_pcm_runtime(struct snd_soc_card *card,
395 struct snd_soc_pcm_runtime *rtd)
397 list_add_tail(&rtd->list, &card->rtd_list);
398 rtd->num = card->num_rtd;
402 static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
404 struct snd_soc_pcm_runtime *rtd, *_rtd;
406 for_each_card_rtds_safe(card, rtd, _rtd) {
407 list_del(&rtd->list);
408 soc_free_pcm_runtime(rtd);
414 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
415 const char *dai_link)
417 struct snd_soc_pcm_runtime *rtd;
419 for_each_card_rtds(card, rtd) {
420 if (!strcmp(rtd->dai_link->name, dai_link))
423 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
426 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
428 static void codec2codec_close_delayed_work(struct work_struct *work)
431 * Currently nothing to do for c2c links
432 * Since c2c links are internal nodes in the DAPM graph and
433 * don't interface with the outside world or application layer
434 * we don't have to do any special handling on close.
438 #ifdef CONFIG_PM_SLEEP
439 /* powers down audio subsystem for suspend */
440 int snd_soc_suspend(struct device *dev)
442 struct snd_soc_card *card = dev_get_drvdata(dev);
443 struct snd_soc_component *component;
444 struct snd_soc_pcm_runtime *rtd;
447 /* If the card is not initialized yet there is nothing to do */
448 if (!card->instantiated)
452 * Due to the resume being scheduled into a workqueue we could
453 * suspend before that's finished - wait for it to complete.
455 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
457 /* we're going to block userspace touching us until resume completes */
458 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
460 /* mute any active DACs */
461 for_each_card_rtds(card, rtd) {
462 struct snd_soc_dai *dai;
464 if (rtd->dai_link->ignore_suspend)
467 for_each_rtd_codec_dai(rtd, i, dai) {
468 struct snd_soc_dai_driver *drv = dai->driver;
470 if (drv->ops->digital_mute && dai->playback_active)
471 drv->ops->digital_mute(dai, 1);
475 /* suspend all pcms */
476 for_each_card_rtds(card, rtd) {
477 if (rtd->dai_link->ignore_suspend)
480 snd_pcm_suspend_all(rtd->pcm);
483 if (card->suspend_pre)
484 card->suspend_pre(card);
486 for_each_card_rtds(card, rtd) {
487 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
489 if (rtd->dai_link->ignore_suspend)
492 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
493 cpu_dai->driver->suspend(cpu_dai);
496 /* close any waiting streams */
497 for_each_card_rtds(card, rtd)
498 flush_delayed_work(&rtd->delayed_work);
500 for_each_card_rtds(card, rtd) {
502 if (rtd->dai_link->ignore_suspend)
505 snd_soc_dapm_stream_event(rtd,
506 SNDRV_PCM_STREAM_PLAYBACK,
507 SND_SOC_DAPM_STREAM_SUSPEND);
509 snd_soc_dapm_stream_event(rtd,
510 SNDRV_PCM_STREAM_CAPTURE,
511 SND_SOC_DAPM_STREAM_SUSPEND);
514 /* Recheck all endpoints too, their state is affected by suspend */
515 dapm_mark_endpoints_dirty(card);
516 snd_soc_dapm_sync(&card->dapm);
518 /* suspend all COMPONENTs */
519 for_each_card_components(card, component) {
520 struct snd_soc_dapm_context *dapm =
521 snd_soc_component_get_dapm(component);
524 * If there are paths active then the COMPONENT will be held
525 * with bias _ON and should not be suspended.
527 if (!component->suspended) {
528 switch (snd_soc_dapm_get_bias_level(dapm)) {
529 case SND_SOC_BIAS_STANDBY:
531 * If the COMPONENT is capable of idle
532 * bias off then being in STANDBY
533 * means it's doing something,
534 * otherwise fall through.
536 if (dapm->idle_bias_off) {
537 dev_dbg(component->dev,
538 "ASoC: idle_bias_off CODEC on over suspend\n");
543 case SND_SOC_BIAS_OFF:
544 if (component->driver->suspend)
545 component->driver->suspend(component);
546 component->suspended = 1;
547 if (component->regmap)
548 regcache_mark_dirty(component->regmap);
549 /* deactivate pins to sleep state */
550 pinctrl_pm_select_sleep_state(component->dev);
553 dev_dbg(component->dev,
554 "ASoC: COMPONENT is on over suspend\n");
560 for_each_card_rtds(card, rtd) {
561 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
563 if (rtd->dai_link->ignore_suspend)
566 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
567 cpu_dai->driver->suspend(cpu_dai);
569 /* deactivate pins to sleep state */
570 pinctrl_pm_select_sleep_state(cpu_dai->dev);
573 if (card->suspend_post)
574 card->suspend_post(card);
578 EXPORT_SYMBOL_GPL(snd_soc_suspend);
581 * deferred resume work, so resume can complete before we finished
582 * setting our codec back up, which can be very slow on I2C
584 static void soc_resume_deferred(struct work_struct *work)
586 struct snd_soc_card *card =
587 container_of(work, struct snd_soc_card,
588 deferred_resume_work);
589 struct snd_soc_pcm_runtime *rtd;
590 struct snd_soc_component *component;
594 * our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
595 * so userspace apps are blocked from touching us
598 dev_dbg(card->dev, "ASoC: starting resume work\n");
600 /* Bring us up into D2 so that DAPM starts enabling things */
601 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
603 if (card->resume_pre)
604 card->resume_pre(card);
606 /* resume control bus DAIs */
607 for_each_card_rtds(card, rtd) {
608 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
610 if (rtd->dai_link->ignore_suspend)
613 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
614 cpu_dai->driver->resume(cpu_dai);
617 for_each_card_components(card, component) {
618 if (component->suspended) {
619 if (component->driver->resume)
620 component->driver->resume(component);
621 component->suspended = 0;
625 for_each_card_rtds(card, rtd) {
627 if (rtd->dai_link->ignore_suspend)
630 snd_soc_dapm_stream_event(rtd,
631 SNDRV_PCM_STREAM_PLAYBACK,
632 SND_SOC_DAPM_STREAM_RESUME);
634 snd_soc_dapm_stream_event(rtd,
635 SNDRV_PCM_STREAM_CAPTURE,
636 SND_SOC_DAPM_STREAM_RESUME);
639 /* unmute any active DACs */
640 for_each_card_rtds(card, rtd) {
641 struct snd_soc_dai *dai;
643 if (rtd->dai_link->ignore_suspend)
646 for_each_rtd_codec_dai(rtd, i, dai) {
647 struct snd_soc_dai_driver *drv = dai->driver;
649 if (drv->ops->digital_mute && dai->playback_active)
650 drv->ops->digital_mute(dai, 0);
654 for_each_card_rtds(card, rtd) {
655 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
657 if (rtd->dai_link->ignore_suspend)
660 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
661 cpu_dai->driver->resume(cpu_dai);
664 if (card->resume_post)
665 card->resume_post(card);
667 dev_dbg(card->dev, "ASoC: resume work completed\n");
669 /* Recheck all endpoints too, their state is affected by suspend */
670 dapm_mark_endpoints_dirty(card);
671 snd_soc_dapm_sync(&card->dapm);
673 /* userspace can access us now we are back as we were before */
674 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
677 /* powers up audio subsystem after a suspend */
678 int snd_soc_resume(struct device *dev)
680 struct snd_soc_card *card = dev_get_drvdata(dev);
681 bool bus_control = false;
682 struct snd_soc_pcm_runtime *rtd;
684 /* If the card is not initialized yet there is nothing to do */
685 if (!card->instantiated)
688 /* activate pins from sleep state */
689 for_each_card_rtds(card, rtd) {
690 struct snd_soc_dai *codec_dai;
691 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
695 pinctrl_pm_select_default_state(cpu_dai->dev);
697 for_each_rtd_codec_dai(rtd, j, codec_dai) {
698 if (codec_dai->active)
699 pinctrl_pm_select_default_state(codec_dai->dev);
704 * DAIs that also act as the control bus master might have other drivers
705 * hanging off them so need to resume immediately. Other drivers don't
706 * have that problem and may take a substantial amount of time to resume
707 * due to I/O costs and anti-pop so handle them out of line.
709 for_each_card_rtds(card, rtd) {
710 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
712 bus_control |= cpu_dai->driver->bus_control;
715 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
716 soc_resume_deferred(&card->deferred_resume_work);
718 dev_dbg(dev, "ASoC: Scheduling resume work\n");
719 if (!schedule_work(&card->deferred_resume_work))
720 dev_err(dev, "ASoC: resume work item may be lost\n");
725 EXPORT_SYMBOL_GPL(snd_soc_resume);
727 #define snd_soc_suspend NULL
728 #define snd_soc_resume NULL
731 static const struct snd_soc_dai_ops null_dai_ops = {
734 static struct snd_soc_component *soc_find_component(
735 const struct device_node *of_node, const char *name)
737 struct snd_soc_component *component;
738 struct device_node *component_of_node;
740 lockdep_assert_held(&client_mutex);
742 for_each_component(component) {
744 component_of_node = component->dev->of_node;
745 if (!component_of_node && component->dev->parent)
746 component_of_node = component->dev->parent->of_node;
748 if (component_of_node == of_node)
750 } else if (name && strcmp(component->name, name) == 0) {
758 static int snd_soc_is_matching_component(
759 const struct snd_soc_dai_link_component *dlc,
760 struct snd_soc_component *component)
762 struct device_node *component_of_node;
764 component_of_node = component->dev->of_node;
765 if (!component_of_node && component->dev->parent)
766 component_of_node = component->dev->parent->of_node;
768 if (dlc->of_node && component_of_node != dlc->of_node)
770 if (dlc->name && strcmp(component->name, dlc->name))
777 * snd_soc_find_dai - Find a registered DAI
779 * @dlc: name of the DAI or the DAI driver and optional component info to match
781 * This function will search all registered components and their DAIs to
782 * find the DAI of the same name. The component's of_node and name
783 * should also match if being specified.
785 * Return: pointer of DAI, or NULL if not found.
787 struct snd_soc_dai *snd_soc_find_dai(
788 const struct snd_soc_dai_link_component *dlc)
790 struct snd_soc_component *component;
791 struct snd_soc_dai *dai;
793 lockdep_assert_held(&client_mutex);
795 /* Find CPU DAI from registered DAIs */
796 for_each_component(component) {
797 if (!snd_soc_is_matching_component(dlc, component))
799 for_each_component_dais(component, dai) {
800 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
801 && (!dai->driver->name
802 || strcmp(dai->driver->name, dlc->dai_name)))
811 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
814 * snd_soc_find_dai_link - Find a DAI link
817 * @id: DAI link ID to match
818 * @name: DAI link name to match, optional
819 * @stream_name: DAI link stream name to match, optional
821 * This function will search all existing DAI links of the soc card to
822 * find the link of the same ID. Since DAI links may not have their
823 * unique ID, so name and stream name should also match if being
826 * Return: pointer of DAI link, or NULL if not found.
828 struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
829 int id, const char *name,
830 const char *stream_name)
832 struct snd_soc_dai_link *link, *_link;
834 lockdep_assert_held(&client_mutex);
836 for_each_card_links_safe(card, link, _link) {
840 if (name && (!link->name || strcmp(name, link->name)))
843 if (stream_name && (!link->stream_name
844 || strcmp(stream_name, link->stream_name)))
852 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
854 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
855 struct snd_soc_dai_link *dai_link)
857 struct snd_soc_pcm_runtime *rtd;
859 for_each_card_rtds(card, rtd) {
860 if (rtd->dai_link == dai_link)
867 static int soc_bind_dai_link(struct snd_soc_card *card,
868 struct snd_soc_dai_link *dai_link)
870 struct snd_soc_pcm_runtime *rtd;
871 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
872 struct snd_soc_dai_link_component cpu_dai_component;
873 struct snd_soc_component *component;
874 struct snd_soc_dai **codec_dais;
877 if (dai_link->ignore)
880 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
882 if (soc_is_dai_link_bound(card, dai_link)) {
883 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
888 rtd = soc_new_pcm_runtime(card, dai_link);
892 cpu_dai_component.name = dai_link->cpu_name;
893 cpu_dai_component.of_node = dai_link->cpu_of_node;
894 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
895 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
897 dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
898 dai_link->cpu_dai_name);
901 snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
903 rtd->num_codecs = dai_link->num_codecs;
905 /* Find CODEC from registered CODECs */
906 /* we can use for_each_rtd_codec_dai() after this */
907 codec_dais = rtd->codec_dais;
908 for (i = 0; i < rtd->num_codecs; i++) {
909 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
910 if (!codec_dais[i]) {
911 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
915 snd_soc_rtdcom_add(rtd, codec_dais[i]->component);
918 /* Single codec links expect codec and codec_dai in runtime data */
919 rtd->codec_dai = codec_dais[0];
921 /* find one from the set of registered platforms */
922 for_each_component(component) {
923 if (!snd_soc_is_matching_component(dai_link->platform,
927 snd_soc_rtdcom_add(rtd, component);
930 soc_add_pcm_runtime(card, rtd);
934 soc_free_pcm_runtime(rtd);
935 return -EPROBE_DEFER;
938 static void soc_remove_component(struct snd_soc_component *component)
940 if (!component->card)
943 list_del(&component->card_list);
945 if (component->driver->remove)
946 component->driver->remove(component);
948 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
950 soc_cleanup_component_debugfs(component);
951 component->card = NULL;
952 module_put(component->dev->driver->owner);
955 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
959 if (!dai || !dai->probed || !dai->driver ||
960 dai->driver->remove_order != order)
963 if (dai->driver->remove) {
964 err = dai->driver->remove(dai);
967 "ASoC: failed to remove %s: %d\n",
973 static void soc_remove_link_dais(struct snd_soc_card *card,
974 struct snd_soc_pcm_runtime *rtd, int order)
977 struct snd_soc_dai *codec_dai;
979 /* unregister the rtd device */
980 if (rtd->dev_registered) {
981 device_unregister(rtd->dev);
982 rtd->dev_registered = 0;
985 /* remove the CODEC DAI */
986 for_each_rtd_codec_dai(rtd, i, codec_dai)
987 soc_remove_dai(codec_dai, order);
989 soc_remove_dai(rtd->cpu_dai, order);
992 static void soc_remove_link_components(struct snd_soc_card *card,
993 struct snd_soc_pcm_runtime *rtd, int order)
995 struct snd_soc_component *component;
996 struct snd_soc_rtdcom_list *rtdcom;
998 for_each_rtdcom(rtd, rtdcom) {
999 component = rtdcom->component;
1001 if (component->driver->remove_order == order)
1002 soc_remove_component(component);
1006 static void soc_remove_dai_links(struct snd_soc_card *card)
1009 struct snd_soc_pcm_runtime *rtd;
1010 struct snd_soc_dai_link *link, *_link;
1012 for_each_comp_order(order) {
1013 for_each_card_rtds(card, rtd)
1014 soc_remove_link_dais(card, rtd, order);
1017 for_each_comp_order(order) {
1018 for_each_card_rtds(card, rtd)
1019 soc_remove_link_components(card, rtd, order);
1022 for_each_card_links_safe(card, link, _link) {
1023 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1024 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1027 list_del(&link->list);
1031 static int snd_soc_init_platform(struct snd_soc_card *card,
1032 struct snd_soc_dai_link *dai_link)
1034 struct snd_soc_dai_link_component *platform = dai_link->platform;
1039 * this function should be removed in the future
1041 /* convert Legacy platform link */
1042 if (!platform || dai_link->legacy_platform) {
1043 platform = devm_kzalloc(card->dev,
1044 sizeof(struct snd_soc_dai_link_component),
1049 dai_link->platform = platform;
1050 dai_link->legacy_platform = 1;
1051 platform->name = dai_link->platform_name;
1052 platform->of_node = dai_link->platform_of_node;
1053 platform->dai_name = NULL;
1056 /* if there's no platform we match on the empty platform */
1057 if (!platform->name &&
1059 platform->name = "snd-soc-dummy";
1064 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1065 struct snd_soc_dai_link *dai_link)
1067 /* Legacy codec/codec_dai link is a single entry in multicodec */
1068 if (dai_link->codec_name || dai_link->codec_of_node ||
1069 dai_link->codec_dai_name) {
1070 dai_link->num_codecs = 1;
1072 dai_link->codecs = devm_kzalloc(card->dev,
1073 sizeof(struct snd_soc_dai_link_component),
1075 if (!dai_link->codecs)
1078 dai_link->codecs[0].name = dai_link->codec_name;
1079 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1080 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1083 if (!dai_link->codecs) {
1084 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1091 static int soc_init_dai_link(struct snd_soc_card *card,
1092 struct snd_soc_dai_link *link)
1095 struct snd_soc_dai_link_component *codec;
1097 ret = snd_soc_init_platform(card, link);
1099 dev_err(card->dev, "ASoC: failed to init multiplatform\n");
1103 ret = snd_soc_init_multicodec(card, link);
1105 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1109 for_each_link_codecs(link, i, codec) {
1111 * Codec must be specified by 1 of name or OF node,
1112 * not both or neither.
1114 if (!!codec->name ==
1116 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1120 /* Codec DAI name must be specified */
1121 if (!codec->dai_name) {
1122 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1129 * Platform may be specified by either name or OF node, but
1130 * can be left unspecified, and a dummy platform will be used.
1132 if (link->platform->name && link->platform->of_node) {
1134 "ASoC: Both platform name/of_node are set for %s\n",
1140 * Defer card registartion if platform dai component is not added to
1143 if ((link->platform->of_node || link->platform->name) &&
1144 !soc_find_component(link->platform->of_node, link->platform->name))
1145 return -EPROBE_DEFER;
1148 * CPU device may be specified by either name or OF node, but
1149 * can be left unspecified, and will be matched based on DAI
1152 if (link->cpu_name && link->cpu_of_node) {
1154 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1160 * Defer card registartion if cpu dai component is not added to
1163 if ((link->cpu_of_node || link->cpu_name) &&
1164 !soc_find_component(link->cpu_of_node, link->cpu_name))
1165 return -EPROBE_DEFER;
1168 * At least one of CPU DAI name or CPU device name/node must be
1171 if (!link->cpu_dai_name &&
1172 !(link->cpu_name || link->cpu_of_node)) {
1174 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1182 void snd_soc_disconnect_sync(struct device *dev)
1184 struct snd_soc_component *component =
1185 snd_soc_lookup_component(dev, NULL);
1187 if (!component || !component->card)
1190 snd_card_disconnect_sync(component->card->snd_card);
1192 EXPORT_SYMBOL_GPL(snd_soc_disconnect_sync);
1195 * snd_soc_add_dai_link - Add a DAI link dynamically
1196 * @card: The ASoC card to which the DAI link is added
1197 * @dai_link: The new DAI link to add
1199 * This function adds a DAI link to the ASoC card's link list.
1201 * Note: Topology can use this API to add DAI links when probing the
1202 * topology component. And machine drivers can still define static
1203 * DAI links in dai_link array.
1205 int snd_soc_add_dai_link(struct snd_soc_card *card,
1206 struct snd_soc_dai_link *dai_link)
1208 if (dai_link->dobj.type
1209 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1210 dev_err(card->dev, "Invalid dai link type %d\n",
1211 dai_link->dobj.type);
1215 lockdep_assert_held(&client_mutex);
1217 * Notify the machine driver for extra initialization
1218 * on the link created by topology.
1220 if (dai_link->dobj.type && card->add_dai_link)
1221 card->add_dai_link(card, dai_link);
1223 list_add_tail(&dai_link->list, &card->dai_link_list);
1227 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1230 * snd_soc_remove_dai_link - Remove a DAI link from the list
1231 * @card: The ASoC card that owns the link
1232 * @dai_link: The DAI link to remove
1234 * This function removes a DAI link from the ASoC card's link list.
1236 * For DAI links previously added by topology, topology should
1237 * remove them by using the dobj embedded in the link.
1239 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1240 struct snd_soc_dai_link *dai_link)
1242 struct snd_soc_dai_link *link, *_link;
1244 if (dai_link->dobj.type
1245 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1246 dev_err(card->dev, "Invalid dai link type %d\n",
1247 dai_link->dobj.type);
1251 lockdep_assert_held(&client_mutex);
1253 * Notify the machine driver for extra destruction
1254 * on the link created by topology.
1256 if (dai_link->dobj.type && card->remove_dai_link)
1257 card->remove_dai_link(card, dai_link);
1259 for_each_card_links_safe(card, link, _link) {
1260 if (link == dai_link) {
1261 list_del(&link->list);
1266 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1268 static void soc_set_of_name_prefix(struct snd_soc_component *component)
1270 struct device_node *component_of_node = component->dev->of_node;
1274 if (!component_of_node && component->dev->parent)
1275 component_of_node = component->dev->parent->of_node;
1277 ret = of_property_read_string(component_of_node, "sound-name-prefix",
1280 component->name_prefix = str;
1283 static void soc_set_name_prefix(struct snd_soc_card *card,
1284 struct snd_soc_component *component)
1288 for (i = 0; i < card->num_configs && card->codec_conf; i++) {
1289 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1290 struct device_node *component_of_node = component->dev->of_node;
1292 if (!component_of_node && component->dev->parent)
1293 component_of_node = component->dev->parent->of_node;
1295 if (map->of_node && component_of_node != map->of_node)
1297 if (map->dev_name && strcmp(component->name, map->dev_name))
1299 component->name_prefix = map->name_prefix;
1304 * If there is no configuration table or no match in the table,
1305 * check if a prefix is provided in the node
1307 soc_set_of_name_prefix(component);
1310 static int soc_probe_component(struct snd_soc_card *card,
1311 struct snd_soc_component *component)
1313 struct snd_soc_dapm_context *dapm =
1314 snd_soc_component_get_dapm(component);
1315 struct snd_soc_dai *dai;
1318 if (!strcmp(component->name, "snd-soc-dummy"))
1321 if (component->card) {
1322 if (component->card != card) {
1323 dev_err(component->dev,
1324 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1325 card->name, component->card->name);
1331 if (!try_module_get(component->dev->driver->owner))
1334 component->card = card;
1336 soc_set_name_prefix(card, component);
1338 soc_init_component_debugfs(component);
1340 if (component->driver->dapm_widgets) {
1341 ret = snd_soc_dapm_new_controls(dapm,
1342 component->driver->dapm_widgets,
1343 component->driver->num_dapm_widgets);
1346 dev_err(component->dev,
1347 "Failed to create new controls %d\n", ret);
1352 for_each_component_dais(component, dai) {
1353 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1355 dev_err(component->dev,
1356 "Failed to create DAI widgets %d\n", ret);
1361 if (component->driver->probe) {
1362 ret = component->driver->probe(component);
1364 dev_err(component->dev,
1365 "ASoC: failed to probe component %d\n", ret);
1369 WARN(dapm->idle_bias_off &&
1370 dapm->bias_level != SND_SOC_BIAS_OFF,
1371 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1375 /* machine specific init */
1376 if (component->init) {
1377 ret = component->init(component);
1379 dev_err(component->dev,
1380 "Failed to do machine specific init %d\n", ret);
1385 if (component->driver->controls)
1386 snd_soc_add_component_controls(component,
1387 component->driver->controls,
1388 component->driver->num_controls);
1389 if (component->driver->dapm_routes)
1390 snd_soc_dapm_add_routes(dapm,
1391 component->driver->dapm_routes,
1392 component->driver->num_dapm_routes);
1394 list_add(&dapm->list, &card->dapm_list);
1395 /* see for_each_card_components */
1396 list_add(&component->card_list, &card->component_dev_list);
1401 soc_cleanup_component_debugfs(component);
1402 component->card = NULL;
1403 module_put(component->dev->driver->owner);
1408 static void rtd_release(struct device *dev)
1413 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1418 /* register the rtd device */
1419 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1422 device_initialize(rtd->dev);
1423 rtd->dev->parent = rtd->card->dev;
1424 rtd->dev->release = rtd_release;
1425 rtd->dev->groups = soc_dev_attr_groups;
1426 dev_set_name(rtd->dev, "%s", name);
1427 dev_set_drvdata(rtd->dev, rtd);
1428 mutex_init(&rtd->pcm_mutex);
1429 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1430 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1431 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1432 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1433 ret = device_add(rtd->dev);
1435 /* calling put_device() here to free the rtd->dev */
1436 put_device(rtd->dev);
1437 dev_err(rtd->card->dev,
1438 "ASoC: failed to register runtime device: %d\n", ret);
1441 rtd->dev_registered = 1;
1445 static int soc_probe_link_components(struct snd_soc_card *card,
1446 struct snd_soc_pcm_runtime *rtd, int order)
1448 struct snd_soc_component *component;
1449 struct snd_soc_rtdcom_list *rtdcom;
1452 for_each_rtdcom(rtd, rtdcom) {
1453 component = rtdcom->component;
1455 if (component->driver->probe_order == order) {
1456 ret = soc_probe_component(card, component);
1465 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1468 dai->driver->probe_order != order)
1471 if (dai->driver->probe) {
1472 int ret = dai->driver->probe(dai);
1475 dev_err(dai->dev, "ASoC: failed to probe DAI %s: %d\n",
1486 static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais,
1487 struct snd_soc_pcm_runtime *rtd)
1491 for (i = 0; i < num_dais; ++i) {
1492 struct snd_soc_dai_driver *drv = dais[i]->driver;
1495 ret = drv->pcm_new(rtd, dais[i]);
1497 dev_err(dais[i]->dev,
1498 "ASoC: Failed to bind %s with pcm device\n",
1507 static int soc_probe_link_dais(struct snd_soc_card *card,
1508 struct snd_soc_pcm_runtime *rtd, int order)
1510 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1511 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1512 struct snd_soc_rtdcom_list *rtdcom;
1513 struct snd_soc_component *component;
1514 struct snd_soc_dai *codec_dai;
1517 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1518 card->name, rtd->num, order);
1520 /* set default power off timeout */
1521 rtd->pmdown_time = pmdown_time;
1523 ret = soc_probe_dai(cpu_dai, order);
1527 /* probe the CODEC DAI */
1528 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1529 ret = soc_probe_dai(codec_dai, order);
1534 /* complete DAI probe during last probe */
1535 if (order != SND_SOC_COMP_ORDER_LAST)
1538 /* do machine specific initialization */
1539 if (dai_link->init) {
1540 ret = dai_link->init(rtd);
1542 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1543 dai_link->name, ret);
1548 if (dai_link->dai_fmt)
1549 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1551 ret = soc_post_component_init(rtd, dai_link->name);
1555 #ifdef CONFIG_DEBUG_FS
1556 /* add DPCM sysfs entries */
1557 if (dai_link->dynamic)
1558 soc_dpcm_debugfs_add(rtd);
1564 * most drivers will register their PCMs using DAI link ordering but
1565 * topology based drivers can use the DAI link id field to set PCM
1566 * device number and then use rtd + a base offset of the BEs.
1568 for_each_rtdcom(rtd, rtdcom) {
1569 component = rtdcom->component;
1571 if (!component->driver->use_dai_pcm_id)
1574 if (rtd->dai_link->no_pcm)
1575 num += component->driver->be_pcm_base;
1577 num = rtd->dai_link->id;
1580 if (cpu_dai->driver->compress_new) {
1581 /* create compress_device" */
1582 ret = cpu_dai->driver->compress_new(rtd, num);
1584 dev_err(card->dev, "ASoC: can't create compress %s\n",
1585 dai_link->stream_name);
1590 if (!dai_link->params) {
1591 /* create the pcm */
1592 ret = soc_new_pcm(rtd, num);
1594 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1595 dai_link->stream_name, ret);
1598 ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd);
1601 ret = soc_link_dai_pcm_new(rtd->codec_dais,
1602 rtd->num_codecs, rtd);
1606 INIT_DELAYED_WORK(&rtd->delayed_work,
1607 codec2codec_close_delayed_work);
1614 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1616 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1617 struct snd_soc_component *component;
1619 struct device_node *codec_of_node;
1621 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1622 /* codecs, usually analog devices */
1623 name = aux_dev->codec_name;
1624 codec_of_node = aux_dev->codec_of_node;
1625 component = soc_find_component(codec_of_node, name);
1628 name = of_node_full_name(codec_of_node);
1631 } else if (aux_dev->name) {
1632 /* generic components */
1633 name = aux_dev->name;
1634 component = soc_find_component(NULL, name);
1638 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1642 component->init = aux_dev->init;
1643 list_add(&component->card_aux_list, &card->aux_comp_list);
1648 dev_err(card->dev, "ASoC: %s not registered\n", name);
1649 return -EPROBE_DEFER;
1652 static int soc_probe_aux_devices(struct snd_soc_card *card)
1654 struct snd_soc_component *comp;
1658 for_each_comp_order(order) {
1659 list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) {
1660 if (comp->driver->probe_order == order) {
1661 ret = soc_probe_component(card, comp);
1664 "ASoC: failed to probe aux component %s %d\n",
1675 static void soc_remove_aux_devices(struct snd_soc_card *card)
1677 struct snd_soc_component *comp, *_comp;
1680 for_each_comp_order(order) {
1681 list_for_each_entry_safe(comp, _comp,
1682 &card->aux_comp_list, card_aux_list) {
1684 if (comp->driver->remove_order == order) {
1685 soc_remove_component(comp);
1686 /* remove it from the card's aux_comp_list */
1687 list_del(&comp->card_aux_list);
1694 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1695 * @rtd: The runtime for which the DAI link format should be changed
1696 * @dai_fmt: The new DAI link format
1698 * This function updates the DAI link format for all DAIs connected to the DAI
1699 * link for the specified runtime.
1701 * Note: For setups with a static format set the dai_fmt field in the
1702 * corresponding snd_dai_link struct instead of using this function.
1704 * Returns 0 on success, otherwise a negative error code.
1706 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1707 unsigned int dai_fmt)
1709 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1710 struct snd_soc_dai *codec_dai;
1714 for_each_rtd_codec_dai(rtd, i, codec_dai) {
1715 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1716 if (ret != 0 && ret != -ENOTSUPP) {
1717 dev_warn(codec_dai->dev,
1718 "ASoC: Failed to set DAI format: %d\n", ret);
1724 * Flip the polarity for the "CPU" end of a CODEC<->CODEC link
1725 * the component which has non_legacy_dai_naming is Codec
1727 if (cpu_dai->component->driver->non_legacy_dai_naming) {
1728 unsigned int inv_dai_fmt;
1730 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1731 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1732 case SND_SOC_DAIFMT_CBM_CFM:
1733 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1735 case SND_SOC_DAIFMT_CBM_CFS:
1736 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1738 case SND_SOC_DAIFMT_CBS_CFM:
1739 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1741 case SND_SOC_DAIFMT_CBS_CFS:
1742 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1746 dai_fmt = inv_dai_fmt;
1749 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1750 if (ret != 0 && ret != -ENOTSUPP) {
1751 dev_warn(cpu_dai->dev,
1752 "ASoC: Failed to set DAI format: %d\n", ret);
1758 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
1762 * Trim special characters, and replace '-' with '_' since '-' is used to
1763 * separate different DMI fields in the card long name. Only number and
1764 * alphabet characters and a few separator characters are kept.
1766 static void cleanup_dmi_name(char *name)
1770 for (i = 0; name[i]; i++) {
1771 if (isalnum(name[i]) || (name[i] == '.')
1772 || (name[i] == '_'))
1773 name[j++] = name[i];
1774 else if (name[i] == '-')
1782 * Check if a DMI field is valid, i.e. not containing any string
1783 * in the black list.
1785 static int is_dmi_valid(const char *field)
1789 while (dmi_blacklist[i]) {
1790 if (strstr(field, dmi_blacklist[i]))
1799 * snd_soc_set_dmi_name() - Register DMI names to card
1800 * @card: The card to register DMI names
1801 * @flavour: The flavour "differentiator" for the card amongst its peers.
1803 * An Intel machine driver may be used by many different devices but are
1804 * difficult for userspace to differentiate, since machine drivers ususally
1805 * use their own name as the card short name and leave the card long name
1806 * blank. To differentiate such devices and fix bugs due to lack of
1807 * device-specific configurations, this function allows DMI info to be used
1808 * as the sound card long name, in the format of
1809 * "vendor-product-version-board"
1810 * (Character '-' is used to separate different DMI fields here).
1811 * This will help the user space to load the device-specific Use Case Manager
1812 * (UCM) configurations for the card.
1814 * Possible card long names may be:
1815 * DellInc.-XPS139343-01-0310JH
1816 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
1817 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
1819 * This function also supports flavoring the card longname to provide
1820 * the extra differentiation, like "vendor-product-version-board-flavor".
1822 * We only keep number and alphabet characters and a few separator characters
1823 * in the card long name since UCM in the user space uses the card long names
1824 * as card configuration directory names and AudoConf cannot support special
1825 * charactors like SPACE.
1827 * Returns 0 on success, otherwise a negative error code.
1829 int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
1831 const char *vendor, *product, *product_version, *board;
1832 size_t longname_buf_size = sizeof(card->snd_card->longname);
1835 if (card->long_name)
1836 return 0; /* long name already set by driver or from DMI */
1838 /* make up dmi long name as: vendor.product.version.board */
1839 vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1840 if (!vendor || !is_dmi_valid(vendor)) {
1841 dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
1845 snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
1847 cleanup_dmi_name(card->dmi_longname);
1849 product = dmi_get_system_info(DMI_PRODUCT_NAME);
1850 if (product && is_dmi_valid(product)) {
1851 len = strlen(card->dmi_longname);
1852 snprintf(card->dmi_longname + len,
1853 longname_buf_size - len,
1856 len++; /* skip the separator "-" */
1857 if (len < longname_buf_size)
1858 cleanup_dmi_name(card->dmi_longname + len);
1861 * some vendors like Lenovo may only put a self-explanatory
1862 * name in the product version field
1864 product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
1865 if (product_version && is_dmi_valid(product_version)) {
1866 len = strlen(card->dmi_longname);
1867 snprintf(card->dmi_longname + len,
1868 longname_buf_size - len,
1869 "-%s", product_version);
1872 if (len < longname_buf_size)
1873 cleanup_dmi_name(card->dmi_longname + len);
1877 board = dmi_get_system_info(DMI_BOARD_NAME);
1878 if (board && is_dmi_valid(board)) {
1879 len = strlen(card->dmi_longname);
1880 snprintf(card->dmi_longname + len,
1881 longname_buf_size - len,
1885 if (len < longname_buf_size)
1886 cleanup_dmi_name(card->dmi_longname + len);
1887 } else if (!product) {
1888 /* fall back to using legacy name */
1889 dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
1893 /* Add flavour to dmi long name */
1895 len = strlen(card->dmi_longname);
1896 snprintf(card->dmi_longname + len,
1897 longname_buf_size - len,
1901 if (len < longname_buf_size)
1902 cleanup_dmi_name(card->dmi_longname + len);
1905 /* set the card long name */
1906 card->long_name = card->dmi_longname;
1910 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name);
1911 #endif /* CONFIG_DMI */
1913 static void soc_check_tplg_fes(struct snd_soc_card *card)
1915 struct snd_soc_component *component;
1916 const struct snd_soc_component_driver *comp_drv;
1917 struct snd_soc_dai_link *dai_link;
1920 for_each_component(component) {
1922 /* does this component override FEs ? */
1923 if (!component->driver->ignore_machine)
1926 /* for this machine ? */
1927 if (strcmp(component->driver->ignore_machine,
1928 card->dev->driver->name))
1931 /* machine matches, so override the rtd data */
1932 for_each_card_prelinks(card, i, dai_link) {
1934 /* ignore this FE */
1935 if (dai_link->dynamic) {
1936 dai_link->ignore = true;
1940 dev_info(card->dev, "info: override FE DAI link %s\n",
1941 card->dai_link[i].name);
1943 /* override platform component */
1944 if (snd_soc_init_platform(card, dai_link) < 0) {
1945 dev_err(card->dev, "init platform error");
1948 dai_link->platform->name = component->name;
1950 /* convert non BE into BE */
1951 dai_link->no_pcm = 1;
1953 /* override any BE fixups */
1954 dai_link->be_hw_params_fixup =
1955 component->driver->be_hw_params_fixup;
1958 * most BE links don't set stream name, so set it to
1959 * dai link name if it's NULL to help bind widgets.
1961 if (!dai_link->stream_name)
1962 dai_link->stream_name = dai_link->name;
1965 /* Inform userspace we are using alternate topology */
1966 if (component->driver->topology_name_prefix) {
1968 /* topology shortname created? */
1969 if (!card->topology_shortname_created) {
1970 comp_drv = component->driver;
1972 snprintf(card->topology_shortname, 32, "%s-%s",
1973 comp_drv->topology_name_prefix,
1975 card->topology_shortname_created = true;
1978 /* use topology shortname */
1979 card->name = card->topology_shortname;
1984 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1986 struct snd_soc_pcm_runtime *rtd;
1987 struct snd_soc_dai_link *dai_link;
1990 mutex_lock(&client_mutex);
1991 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1993 /* check whether any platform is ignore machine FE and using topology */
1994 soc_check_tplg_fes(card);
1997 for_each_card_prelinks(card, i, dai_link) {
1998 ret = soc_bind_dai_link(card, dai_link);
2003 /* bind aux_devs too */
2004 for (i = 0; i < card->num_aux_devs; i++) {
2005 ret = soc_bind_aux_dev(card, i);
2010 /* add predefined DAI links to the list */
2011 for_each_card_prelinks(card, i, dai_link)
2012 snd_soc_add_dai_link(card, dai_link);
2014 /* card bind complete so register a sound card */
2015 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
2016 card->owner, 0, &card->snd_card);
2019 "ASoC: can't create sound card for card %s: %d\n",
2024 soc_init_card_debugfs(card);
2026 card->dapm.bias_level = SND_SOC_BIAS_OFF;
2027 card->dapm.dev = card->dev;
2028 card->dapm.card = card;
2029 list_add(&card->dapm.list, &card->dapm_list);
2031 #ifdef CONFIG_DEBUG_FS
2032 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
2035 #ifdef CONFIG_PM_SLEEP
2036 /* deferred resume work */
2037 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
2040 if (card->dapm_widgets)
2041 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
2042 card->num_dapm_widgets);
2044 if (card->of_dapm_widgets)
2045 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
2046 card->num_of_dapm_widgets);
2048 /* initialise the sound card only once */
2050 ret = card->probe(card);
2052 goto card_probe_error;
2055 /* probe all components used by DAI links on this card */
2056 for_each_comp_order(order) {
2057 for_each_card_rtds(card, rtd) {
2058 ret = soc_probe_link_components(card, rtd, order);
2061 "ASoC: failed to instantiate card %d\n",
2068 /* probe auxiliary components */
2069 ret = soc_probe_aux_devices(card);
2074 * Find new DAI links added during probing components and bind them.
2075 * Components with topology may bring new DAIs and DAI links.
2077 for_each_card_links(card, dai_link) {
2078 if (soc_is_dai_link_bound(card, dai_link))
2081 ret = soc_init_dai_link(card, dai_link);
2084 ret = soc_bind_dai_link(card, dai_link);
2089 /* probe all DAI links on this card */
2090 for_each_comp_order(order) {
2091 for_each_card_rtds(card, rtd) {
2092 ret = soc_probe_link_dais(card, rtd, order);
2095 "ASoC: failed to instantiate card %d\n",
2102 snd_soc_dapm_link_dai_widgets(card);
2103 snd_soc_dapm_connect_dai_link_widgets(card);
2106 snd_soc_add_card_controls(card, card->controls,
2107 card->num_controls);
2109 if (card->dapm_routes)
2110 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
2111 card->num_dapm_routes);
2113 if (card->of_dapm_routes)
2114 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
2115 card->num_of_dapm_routes);
2117 /* try to set some sane longname if DMI is available */
2118 snd_soc_set_dmi_name(card, NULL);
2120 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
2122 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
2123 "%s", card->long_name ? card->long_name : card->name);
2124 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
2125 "%s", card->driver_name ? card->driver_name : card->name);
2126 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
2127 switch (card->snd_card->driver[i]) {
2133 if (!isalnum(card->snd_card->driver[i]))
2134 card->snd_card->driver[i] = '_';
2139 if (card->late_probe) {
2140 ret = card->late_probe(card);
2142 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2144 goto probe_aux_dev_err;
2148 snd_soc_dapm_new_widgets(card);
2150 ret = snd_card_register(card->snd_card);
2152 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2154 goto probe_aux_dev_err;
2157 card->instantiated = 1;
2158 dapm_mark_endpoints_dirty(card);
2159 snd_soc_dapm_sync(&card->dapm);
2160 mutex_unlock(&card->mutex);
2161 mutex_unlock(&client_mutex);
2166 soc_remove_aux_devices(card);
2169 soc_remove_dai_links(card);
2175 snd_soc_dapm_free(&card->dapm);
2176 soc_cleanup_card_debugfs(card);
2177 snd_card_free(card->snd_card);
2180 soc_remove_pcm_runtimes(card);
2181 mutex_unlock(&card->mutex);
2182 mutex_unlock(&client_mutex);
2187 /* probes a new socdev */
2188 static int soc_probe(struct platform_device *pdev)
2190 struct snd_soc_card *card = platform_get_drvdata(pdev);
2193 * no card, so machine driver should be registering card
2194 * we should not be here in that case so ret error
2199 dev_warn(&pdev->dev,
2200 "ASoC: machine %s should use snd_soc_register_card()\n",
2203 /* Bodge while we unpick instantiation */
2204 card->dev = &pdev->dev;
2206 return snd_soc_register_card(card);
2209 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2211 struct snd_soc_pcm_runtime *rtd;
2213 /* make sure any delayed work runs */
2214 for_each_card_rtds(card, rtd)
2215 flush_delayed_work(&rtd->delayed_work);
2217 /* free the ALSA card at first; this syncs with pending operations */
2218 snd_card_free(card->snd_card);
2220 /* remove and free each DAI */
2221 soc_remove_dai_links(card);
2222 soc_remove_pcm_runtimes(card);
2224 /* remove auxiliary devices */
2225 soc_remove_aux_devices(card);
2227 snd_soc_dapm_free(&card->dapm);
2228 soc_cleanup_card_debugfs(card);
2230 /* remove the card */
2237 /* removes a socdev */
2238 static int soc_remove(struct platform_device *pdev)
2240 struct snd_soc_card *card = platform_get_drvdata(pdev);
2242 snd_soc_unregister_card(card);
2246 int snd_soc_poweroff(struct device *dev)
2248 struct snd_soc_card *card = dev_get_drvdata(dev);
2249 struct snd_soc_pcm_runtime *rtd;
2251 if (!card->instantiated)
2255 * Flush out pmdown_time work - we actually do want to run it
2256 * now, we're shutting down so no imminent restart.
2258 for_each_card_rtds(card, rtd)
2259 flush_delayed_work(&rtd->delayed_work);
2261 snd_soc_dapm_shutdown(card);
2263 /* deactivate pins to sleep state */
2264 for_each_card_rtds(card, rtd) {
2265 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2266 struct snd_soc_dai *codec_dai;
2269 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2270 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2271 pinctrl_pm_select_sleep_state(codec_dai->dev);
2277 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2279 const struct dev_pm_ops snd_soc_pm_ops = {
2280 .suspend = snd_soc_suspend,
2281 .resume = snd_soc_resume,
2282 .freeze = snd_soc_suspend,
2283 .thaw = snd_soc_resume,
2284 .poweroff = snd_soc_poweroff,
2285 .restore = snd_soc_resume,
2287 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2289 /* ASoC platform driver */
2290 static struct platform_driver soc_driver = {
2292 .name = "soc-audio",
2293 .pm = &snd_soc_pm_ops,
2296 .remove = soc_remove,
2300 * snd_soc_cnew - create new control
2301 * @_template: control template
2302 * @data: control private data
2303 * @long_name: control long name
2304 * @prefix: control name prefix
2306 * Create a new mixer control from a template control.
2308 * Returns 0 for success, else error.
2310 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2311 void *data, const char *long_name,
2314 struct snd_kcontrol_new template;
2315 struct snd_kcontrol *kcontrol;
2318 memcpy(&template, _template, sizeof(template));
2322 long_name = template.name;
2325 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2329 template.name = name;
2331 template.name = long_name;
2334 kcontrol = snd_ctl_new1(&template, data);
2340 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2342 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2343 const struct snd_kcontrol_new *controls, int num_controls,
2344 const char *prefix, void *data)
2348 for (i = 0; i < num_controls; i++) {
2349 const struct snd_kcontrol_new *control = &controls[i];
2351 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2352 control->name, prefix));
2354 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2355 control->name, err);
2363 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2366 struct snd_card *card = soc_card->snd_card;
2367 struct snd_kcontrol *kctl;
2369 if (unlikely(!name))
2372 list_for_each_entry(kctl, &card->controls, list)
2373 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2377 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2380 * snd_soc_add_component_controls - Add an array of controls to a component.
2382 * @component: Component to add controls to
2383 * @controls: Array of controls to add
2384 * @num_controls: Number of elements in the array
2386 * Return: 0 for success, else error.
2388 int snd_soc_add_component_controls(struct snd_soc_component *component,
2389 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2391 struct snd_card *card = component->card->snd_card;
2393 return snd_soc_add_controls(card, component->dev, controls,
2394 num_controls, component->name_prefix, component);
2396 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2399 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2400 * Convenience function to add a list of controls.
2402 * @soc_card: SoC card to add controls to
2403 * @controls: array of controls to add
2404 * @num_controls: number of elements in the array
2406 * Return 0 for success, else error.
2408 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2409 const struct snd_kcontrol_new *controls, int num_controls)
2411 struct snd_card *card = soc_card->snd_card;
2413 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2416 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2419 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2420 * Convienience function to add a list of controls.
2422 * @dai: DAI to add controls to
2423 * @controls: array of controls to add
2424 * @num_controls: number of elements in the array
2426 * Return 0 for success, else error.
2428 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2429 const struct snd_kcontrol_new *controls, int num_controls)
2431 struct snd_card *card = dai->component->card->snd_card;
2433 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2436 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2439 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2441 * @clk_id: DAI specific clock ID
2442 * @freq: new clock frequency in Hz
2443 * @dir: new clock direction - input/output.
2445 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2447 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2448 unsigned int freq, int dir)
2450 if (dai->driver->ops->set_sysclk)
2451 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2453 return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
2456 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2459 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2460 * @component: COMPONENT
2461 * @clk_id: DAI specific clock ID
2462 * @source: Source for the clock
2463 * @freq: new clock frequency in Hz
2464 * @dir: new clock direction - input/output.
2466 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2468 int snd_soc_component_set_sysclk(struct snd_soc_component *component,
2469 int clk_id, int source, unsigned int freq,
2472 if (component->driver->set_sysclk)
2473 return component->driver->set_sysclk(component, clk_id, source,
2478 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk);
2481 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2483 * @div_id: DAI specific clock divider ID
2484 * @div: new clock divisor.
2486 * Configures the clock dividers. This is used to derive the best DAI bit and
2487 * frame clocks from the system or master clock. It's best to set the DAI bit
2488 * and frame clocks as low as possible to save system power.
2490 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2491 int div_id, int div)
2493 if (dai->driver->ops->set_clkdiv)
2494 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2498 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2501 * snd_soc_dai_set_pll - configure DAI PLL.
2503 * @pll_id: DAI specific PLL ID
2504 * @source: DAI specific source for the PLL
2505 * @freq_in: PLL input clock frequency in Hz
2506 * @freq_out: requested PLL output clock frequency in Hz
2508 * Configures and enables PLL to generate output clock based on input clock.
2510 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2511 unsigned int freq_in, unsigned int freq_out)
2513 if (dai->driver->ops->set_pll)
2514 return dai->driver->ops->set_pll(dai, pll_id, source,
2517 return snd_soc_component_set_pll(dai->component, pll_id, source,
2520 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2523 * snd_soc_component_set_pll - configure component PLL.
2524 * @component: COMPONENT
2525 * @pll_id: DAI specific PLL ID
2526 * @source: DAI specific source for the PLL
2527 * @freq_in: PLL input clock frequency in Hz
2528 * @freq_out: requested PLL output clock frequency in Hz
2530 * Configures and enables PLL to generate output clock based on input clock.
2532 int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
2533 int source, unsigned int freq_in,
2534 unsigned int freq_out)
2536 if (component->driver->set_pll)
2537 return component->driver->set_pll(component, pll_id, source,
2542 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll);
2545 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2547 * @ratio: Ratio of BCLK to Sample rate.
2549 * Configures the DAI for a preset BCLK to sample rate ratio.
2551 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2553 if (dai->driver->ops->set_bclk_ratio)
2554 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2558 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2561 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2563 * @fmt: SND_SOC_DAIFMT_* format value.
2565 * Configures the DAI hardware format and clocking.
2567 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2569 if (dai->driver->ops->set_fmt == NULL)
2571 return dai->driver->ops->set_fmt(dai, fmt);
2573 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2576 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2577 * @slots: Number of slots in use.
2578 * @tx_mask: bitmask representing active TX slots.
2579 * @rx_mask: bitmask representing active RX slots.
2581 * Generates the TDM tx and rx slot default masks for DAI.
2583 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2584 unsigned int *tx_mask,
2585 unsigned int *rx_mask)
2587 if (*tx_mask || *rx_mask)
2593 *tx_mask = (1 << slots) - 1;
2594 *rx_mask = (1 << slots) - 1;
2600 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2601 * @dai: The DAI to configure
2602 * @tx_mask: bitmask representing active TX slots.
2603 * @rx_mask: bitmask representing active RX slots.
2604 * @slots: Number of slots in use.
2605 * @slot_width: Width in bits for each slot.
2607 * This function configures the specified DAI for TDM operation. @slot contains
2608 * the total number of slots of the TDM stream and @slot_with the width of each
2609 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2610 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2611 * DAI should write to or read from. If a bit is set the corresponding slot is
2612 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2613 * the first slot, bit 1 to the second slot and so on. The first active slot
2614 * maps to the first channel of the DAI, the second active slot to the second
2615 * channel and so on.
2617 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2618 * @rx_mask and @slot_width will be ignored.
2620 * Returns 0 on success, a negative error code otherwise.
2622 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2623 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2625 if (dai->driver->ops->xlate_tdm_slot_mask)
2626 dai->driver->ops->xlate_tdm_slot_mask(slots,
2627 &tx_mask, &rx_mask);
2629 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2631 dai->tx_mask = tx_mask;
2632 dai->rx_mask = rx_mask;
2634 if (dai->driver->ops->set_tdm_slot)
2635 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2640 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2643 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2645 * @tx_num: how many TX channels
2646 * @tx_slot: pointer to an array which imply the TX slot number channel
2648 * @rx_num: how many RX channels
2649 * @rx_slot: pointer to an array which imply the RX slot number channel
2652 * configure the relationship between channel number and TDM slot number.
2654 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2655 unsigned int tx_num, unsigned int *tx_slot,
2656 unsigned int rx_num, unsigned int *rx_slot)
2658 if (dai->driver->ops->set_channel_map)
2659 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2664 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2667 * snd_soc_dai_get_channel_map - Get DAI audio channel map
2669 * @tx_num: how many TX channels
2670 * @tx_slot: pointer to an array which imply the TX slot number channel
2672 * @rx_num: how many RX channels
2673 * @rx_slot: pointer to an array which imply the RX slot number channel
2676 int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
2677 unsigned int *tx_num, unsigned int *tx_slot,
2678 unsigned int *rx_num, unsigned int *rx_slot)
2680 if (dai->driver->ops->get_channel_map)
2681 return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
2686 EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
2689 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2691 * @tristate: tristate enable
2693 * Tristates the DAI so that others can use it.
2695 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2697 if (dai->driver->ops->set_tristate)
2698 return dai->driver->ops->set_tristate(dai, tristate);
2702 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2705 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2707 * @mute: mute enable
2708 * @direction: stream to mute
2710 * Mutes the DAI DAC.
2712 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2715 if (dai->driver->ops->mute_stream)
2716 return dai->driver->ops->mute_stream(dai, mute, direction);
2717 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2718 dai->driver->ops->digital_mute)
2719 return dai->driver->ops->digital_mute(dai, mute);
2723 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2725 static int snd_soc_bind_card(struct snd_soc_card *card)
2727 struct snd_soc_pcm_runtime *rtd;
2730 ret = snd_soc_instantiate_card(card);
2734 /* deactivate pins to sleep state */
2735 for_each_card_rtds(card, rtd) {
2736 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2737 struct snd_soc_dai *codec_dai;
2740 for_each_rtd_codec_dai(rtd, j, codec_dai) {
2741 if (!codec_dai->active)
2742 pinctrl_pm_select_sleep_state(codec_dai->dev);
2745 if (!cpu_dai->active)
2746 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2753 * snd_soc_register_card - Register a card with the ASoC core
2755 * @card: Card to register
2758 int snd_soc_register_card(struct snd_soc_card *card)
2761 struct snd_soc_dai_link *link;
2763 if (!card->name || !card->dev)
2766 mutex_lock(&client_mutex);
2767 for_each_card_prelinks(card, i, link) {
2769 ret = soc_init_dai_link(card, link);
2771 dev_err(card->dev, "ASoC: failed to init link %s\n",
2773 mutex_unlock(&client_mutex);
2777 mutex_unlock(&client_mutex);
2779 dev_set_drvdata(card->dev, card);
2781 snd_soc_initialize_card_lists(card);
2783 INIT_LIST_HEAD(&card->dai_link_list);
2785 INIT_LIST_HEAD(&card->rtd_list);
2788 INIT_LIST_HEAD(&card->dapm_dirty);
2789 INIT_LIST_HEAD(&card->dobj_list);
2790 card->instantiated = 0;
2791 mutex_init(&card->mutex);
2792 mutex_init(&card->dapm_mutex);
2794 return snd_soc_bind_card(card);
2796 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2798 static void snd_soc_unbind_card(struct snd_soc_card *card, bool unregister)
2800 if (card->instantiated) {
2801 card->instantiated = false;
2802 snd_soc_dapm_shutdown(card);
2803 soc_cleanup_card_resources(card);
2805 list_add(&card->list, &unbind_card_list);
2808 list_del(&card->list);
2813 * snd_soc_unregister_card - Unregister a card with the ASoC core
2815 * @card: Card to unregister
2818 int snd_soc_unregister_card(struct snd_soc_card *card)
2820 snd_soc_unbind_card(card, true);
2821 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
2825 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2828 * Simplify DAI link configuration by removing ".-1" from device names
2829 * and sanitizing names.
2831 static char *fmt_single_name(struct device *dev, int *id)
2833 char *found, name[NAME_SIZE];
2836 if (dev_name(dev) == NULL)
2839 strlcpy(name, dev_name(dev), NAME_SIZE);
2841 /* are we a "%s.%d" name (platform and SPI components) */
2842 found = strstr(name, dev->driver->name);
2845 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2847 /* discard ID from name if ID == -1 */
2849 found[strlen(dev->driver->name)] = '\0';
2853 /* I2C component devices are named "bus-addr" */
2854 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2855 char tmp[NAME_SIZE];
2857 /* create unique ID number from I2C addr and bus */
2858 *id = ((id1 & 0xffff) << 16) + id2;
2860 /* sanitize component name for DAI link creation */
2861 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name,
2863 strlcpy(name, tmp, NAME_SIZE);
2868 return kstrdup(name, GFP_KERNEL);
2872 * Simplify DAI link naming for single devices with multiple DAIs by removing
2873 * any ".-1" and using the DAI name (instead of device name).
2875 static inline char *fmt_multiple_name(struct device *dev,
2876 struct snd_soc_dai_driver *dai_drv)
2878 if (dai_drv->name == NULL) {
2880 "ASoC: error - multiple DAI %s registered with no name\n",
2885 return kstrdup(dai_drv->name, GFP_KERNEL);
2889 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2891 * @component: The component for which the DAIs should be unregistered
2893 static void snd_soc_unregister_dais(struct snd_soc_component *component)
2895 struct snd_soc_dai *dai, *_dai;
2897 for_each_component_dais_safe(component, dai, _dai) {
2898 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
2900 list_del(&dai->list);
2906 /* Create a DAI and add it to the component's DAI list */
2907 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
2908 struct snd_soc_dai_driver *dai_drv,
2909 bool legacy_dai_naming)
2911 struct device *dev = component->dev;
2912 struct snd_soc_dai *dai;
2914 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
2916 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2921 * Back in the old days when we still had component-less DAIs,
2922 * instead of having a static name, component-less DAIs would
2923 * inherit the name of the parent device so it is possible to
2924 * register multiple instances of the DAI. We still need to keep
2925 * the same naming style even though those DAIs are not
2926 * component-less anymore.
2928 if (legacy_dai_naming &&
2929 (dai_drv->id == 0 || dai_drv->name == NULL)) {
2930 dai->name = fmt_single_name(dev, &dai->id);
2932 dai->name = fmt_multiple_name(dev, dai_drv);
2934 dai->id = dai_drv->id;
2936 dai->id = component->num_dai;
2938 if (dai->name == NULL) {
2943 dai->component = component;
2945 dai->driver = dai_drv;
2946 if (!dai->driver->ops)
2947 dai->driver->ops = &null_dai_ops;
2949 /* see for_each_component_dais */
2950 list_add_tail(&dai->list, &component->dai_list);
2951 component->num_dai++;
2953 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
2958 * snd_soc_register_dais - Register a DAI with the ASoC core
2960 * @component: The component the DAIs are registered for
2961 * @dai_drv: DAI driver to use for the DAIs
2962 * @count: Number of DAIs
2964 static int snd_soc_register_dais(struct snd_soc_component *component,
2965 struct snd_soc_dai_driver *dai_drv,
2968 struct device *dev = component->dev;
2969 struct snd_soc_dai *dai;
2973 dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count);
2975 for (i = 0; i < count; i++) {
2977 dai = soc_add_dai(component, dai_drv + i, count == 1 &&
2978 !component->driver->non_legacy_dai_naming);
2988 snd_soc_unregister_dais(component);
2994 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
2996 * @component: The component the DAIs are registered for
2997 * @dai_drv: DAI driver to use for the DAI
2999 * Topology can use this API to register DAIs when probing a component.
3000 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3001 * will be freed in the component cleanup.
3003 int snd_soc_register_dai(struct snd_soc_component *component,
3004 struct snd_soc_dai_driver *dai_drv)
3006 struct snd_soc_dapm_context *dapm =
3007 snd_soc_component_get_dapm(component);
3008 struct snd_soc_dai *dai;
3011 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
3012 dev_err(component->dev, "Invalid dai type %d\n",
3013 dai_drv->dobj.type);
3017 lockdep_assert_held(&client_mutex);
3018 dai = soc_add_dai(component, dai_drv, false);
3023 * Create the DAI widgets here. After adding DAIs, topology may
3024 * also add routes that need these widgets as source or sink.
3026 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
3028 dev_err(component->dev,
3029 "Failed to create DAI widgets %d\n", ret);
3034 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3036 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
3037 enum snd_soc_dapm_type type, int subseq)
3039 struct snd_soc_component *component = dapm->component;
3041 component->driver->seq_notifier(component, type, subseq);
3044 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
3047 struct snd_soc_component *component = dapm->component;
3049 return component->driver->stream_event(component, event);
3052 static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context *dapm,
3053 enum snd_soc_bias_level level)
3055 struct snd_soc_component *component = dapm->component;
3057 return component->driver->set_bias_level(component, level);
3060 static int snd_soc_component_initialize(struct snd_soc_component *component,
3061 const struct snd_soc_component_driver *driver, struct device *dev)
3063 struct snd_soc_dapm_context *dapm;
3065 component->name = fmt_single_name(dev, &component->id);
3066 if (!component->name) {
3067 dev_err(dev, "ASoC: Failed to allocate name\n");
3071 component->dev = dev;
3072 component->driver = driver;
3074 dapm = snd_soc_component_get_dapm(component);
3076 dapm->component = component;
3077 dapm->bias_level = SND_SOC_BIAS_OFF;
3078 dapm->idle_bias_off = !driver->idle_bias_on;
3079 dapm->suspend_bias_off = driver->suspend_bias_off;
3080 if (driver->seq_notifier)
3081 dapm->seq_notifier = snd_soc_component_seq_notifier;
3082 if (driver->stream_event)
3083 dapm->stream_event = snd_soc_component_stream_event;
3084 if (driver->set_bias_level)
3085 dapm->set_bias_level = snd_soc_component_set_bias_level;
3087 INIT_LIST_HEAD(&component->dai_list);
3088 mutex_init(&component->io_mutex);
3093 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
3095 int val_bytes = regmap_get_val_bytes(component->regmap);
3097 /* Errors are legitimate for non-integer byte multiples */
3099 component->val_bytes = val_bytes;
3102 #ifdef CONFIG_REGMAP
3105 * snd_soc_component_init_regmap() - Initialize regmap instance for the
3107 * @component: The component for which to initialize the regmap instance
3108 * @regmap: The regmap instance that should be used by the component
3110 * This function allows deferred assignment of the regmap instance that is
3111 * associated with the component. Only use this if the regmap instance is not
3112 * yet ready when the component is registered. The function must also be called
3113 * before the first IO attempt of the component.
3115 void snd_soc_component_init_regmap(struct snd_soc_component *component,
3116 struct regmap *regmap)
3118 component->regmap = regmap;
3119 snd_soc_component_setup_regmap(component);
3121 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
3124 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the
3126 * @component: The component for which to de-initialize the regmap instance
3128 * Calls regmap_exit() on the regmap instance associated to the component and
3129 * removes the regmap instance from the component.
3131 * This function should only be used if snd_soc_component_init_regmap() was used
3132 * to initialize the regmap instance.
3134 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
3136 regmap_exit(component->regmap);
3137 component->regmap = NULL;
3139 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3143 static void snd_soc_component_add(struct snd_soc_component *component)
3145 mutex_lock(&client_mutex);
3147 if (!component->driver->write && !component->driver->read) {
3148 if (!component->regmap)
3149 component->regmap = dev_get_regmap(component->dev,
3151 if (component->regmap)
3152 snd_soc_component_setup_regmap(component);
3155 /* see for_each_component */
3156 list_add(&component->list, &component_list);
3157 INIT_LIST_HEAD(&component->dobj_list);
3159 mutex_unlock(&client_mutex);
3162 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3164 snd_soc_unregister_dais(component);
3165 kfree(component->name);
3168 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3170 struct snd_soc_card *card = component->card;
3173 snd_soc_unbind_card(card, false);
3175 list_del(&component->list);
3178 #define ENDIANNESS_MAP(name) \
3179 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
3180 static u64 endianness_format_map[] = {
3181 ENDIANNESS_MAP(S16_),
3182 ENDIANNESS_MAP(U16_),
3183 ENDIANNESS_MAP(S24_),
3184 ENDIANNESS_MAP(U24_),
3185 ENDIANNESS_MAP(S32_),
3186 ENDIANNESS_MAP(U32_),
3187 ENDIANNESS_MAP(S24_3),
3188 ENDIANNESS_MAP(U24_3),
3189 ENDIANNESS_MAP(S20_3),
3190 ENDIANNESS_MAP(U20_3),
3191 ENDIANNESS_MAP(S18_3),
3192 ENDIANNESS_MAP(U18_3),
3193 ENDIANNESS_MAP(FLOAT_),
3194 ENDIANNESS_MAP(FLOAT64_),
3195 ENDIANNESS_MAP(IEC958_SUBFRAME_),
3199 * Fix up the DAI formats for endianness: codecs don't actually see
3200 * the endianness of the data but we're using the CPU format
3201 * definitions which do need to include endianness so we ensure that
3202 * codec DAIs always have both big and little endian variants set.
3204 static void convert_endianness_formats(struct snd_soc_pcm_stream *stream)
3208 for (i = 0; i < ARRAY_SIZE(endianness_format_map); i++)
3209 if (stream->formats & endianness_format_map[i])
3210 stream->formats |= endianness_format_map[i];
3213 static void snd_soc_try_rebind_card(void)
3215 struct snd_soc_card *card, *c;
3217 if (!list_empty(&unbind_card_list)) {
3218 list_for_each_entry_safe(card, c, &unbind_card_list, list) {
3219 if (!snd_soc_bind_card(card))
3220 list_del(&card->list);
3225 int snd_soc_add_component(struct device *dev,
3226 struct snd_soc_component *component,
3227 const struct snd_soc_component_driver *component_driver,
3228 struct snd_soc_dai_driver *dai_drv,
3234 ret = snd_soc_component_initialize(component, component_driver, dev);
3238 if (component_driver->endianness) {
3239 for (i = 0; i < num_dai; i++) {
3240 convert_endianness_formats(&dai_drv[i].playback);
3241 convert_endianness_formats(&dai_drv[i].capture);
3245 ret = snd_soc_register_dais(component, dai_drv, num_dai);
3247 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3251 snd_soc_component_add(component);
3252 snd_soc_try_rebind_card();
3257 snd_soc_component_cleanup(component);
3261 EXPORT_SYMBOL_GPL(snd_soc_add_component);
3263 int snd_soc_register_component(struct device *dev,
3264 const struct snd_soc_component_driver *component_driver,
3265 struct snd_soc_dai_driver *dai_drv,
3268 struct snd_soc_component *component;
3270 component = devm_kzalloc(dev, sizeof(*component), GFP_KERNEL);
3274 return snd_soc_add_component(dev, component, component_driver,
3277 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3280 * snd_soc_unregister_component - Unregister all related component
3281 * from the ASoC core
3283 * @dev: The device to unregister
3285 static int __snd_soc_unregister_component(struct device *dev)
3287 struct snd_soc_component *component;
3290 mutex_lock(&client_mutex);
3291 for_each_component(component) {
3292 if (dev != component->dev)
3295 snd_soc_tplg_component_remove(component,
3296 SND_SOC_TPLG_INDEX_ALL);
3297 snd_soc_component_del_unlocked(component);
3301 mutex_unlock(&client_mutex);
3304 snd_soc_component_cleanup(component);
3309 void snd_soc_unregister_component(struct device *dev)
3311 while (__snd_soc_unregister_component(dev))
3314 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3316 struct snd_soc_component *snd_soc_lookup_component(struct device *dev,
3317 const char *driver_name)
3319 struct snd_soc_component *component;
3320 struct snd_soc_component *ret;
3323 mutex_lock(&client_mutex);
3324 for_each_component(component) {
3325 if (dev != component->dev)
3329 (driver_name != component->driver->name) &&
3330 (strcmp(component->driver->name, driver_name) != 0))
3336 mutex_unlock(&client_mutex);
3340 EXPORT_SYMBOL_GPL(snd_soc_lookup_component);
3342 /* Retrieve a card's name from device tree */
3343 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3344 const char *propname)
3346 struct device_node *np;
3350 pr_err("card->dev is not set before calling %s\n", __func__);
3354 np = card->dev->of_node;
3356 ret = of_property_read_string_index(np, propname, 0, &card->name);
3358 * EINVAL means the property does not exist. This is fine providing
3359 * card->name was previously set, which is checked later in
3360 * snd_soc_register_card.
3362 if (ret < 0 && ret != -EINVAL) {
3364 "ASoC: Property '%s' could not be read: %d\n",
3371 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3373 static const struct snd_soc_dapm_widget simple_widgets[] = {
3374 SND_SOC_DAPM_MIC("Microphone", NULL),
3375 SND_SOC_DAPM_LINE("Line", NULL),
3376 SND_SOC_DAPM_HP("Headphone", NULL),
3377 SND_SOC_DAPM_SPK("Speaker", NULL),
3380 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3381 const char *propname)
3383 struct device_node *np = card->dev->of_node;
3384 struct snd_soc_dapm_widget *widgets;
3385 const char *template, *wname;
3386 int i, j, num_widgets, ret;
3388 num_widgets = of_property_count_strings(np, propname);
3389 if (num_widgets < 0) {
3391 "ASoC: Property '%s' does not exist\n", propname);
3394 if (num_widgets & 1) {
3396 "ASoC: Property '%s' length is not even\n", propname);
3402 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3407 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
3411 "ASoC: Could not allocate memory for widgets\n");
3415 for (i = 0; i < num_widgets; i++) {
3416 ret = of_property_read_string_index(np, propname,
3420 "ASoC: Property '%s' index %d read error:%d\n",
3421 propname, 2 * i, ret);
3425 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
3426 if (!strncmp(template, simple_widgets[j].name,
3427 strlen(simple_widgets[j].name))) {
3428 widgets[i] = simple_widgets[j];
3433 if (j >= ARRAY_SIZE(simple_widgets)) {
3435 "ASoC: DAPM widget '%s' is not supported\n",
3440 ret = of_property_read_string_index(np, propname,
3445 "ASoC: Property '%s' index %d read error:%d\n",
3446 propname, (2 * i) + 1, ret);
3450 widgets[i].name = wname;
3453 card->of_dapm_widgets = widgets;
3454 card->num_of_dapm_widgets = num_widgets;
3458 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
3460 int snd_soc_of_get_slot_mask(struct device_node *np,
3461 const char *prop_name,
3465 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
3471 for (i = 0; i < val; i++)
3472 if (be32_to_cpup(&of_slot_mask[i]))
3477 EXPORT_SYMBOL_GPL(snd_soc_of_get_slot_mask);
3479 int snd_soc_of_parse_tdm_slot(struct device_node *np,
3480 unsigned int *tx_mask,
3481 unsigned int *rx_mask,
3482 unsigned int *slots,
3483 unsigned int *slot_width)
3489 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
3491 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
3493 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
3494 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
3502 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
3503 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
3513 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
3515 void snd_soc_of_parse_node_prefix(struct device_node *np,
3516 struct snd_soc_codec_conf *codec_conf,
3517 struct device_node *of_node,
3518 const char *propname)
3523 ret = of_property_read_string(np, propname, &str);
3525 /* no prefix is not error */
3529 codec_conf->of_node = of_node;
3530 codec_conf->name_prefix = str;
3532 EXPORT_SYMBOL_GPL(snd_soc_of_parse_node_prefix);
3534 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3535 const char *propname)
3537 struct device_node *np = card->dev->of_node;
3539 struct snd_soc_dapm_route *routes;
3542 num_routes = of_property_count_strings(np, propname);
3543 if (num_routes < 0 || num_routes & 1) {
3545 "ASoC: Property '%s' does not exist or its length is not even\n",
3551 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3556 routes = devm_kcalloc(card->dev, num_routes, sizeof(*routes),
3560 "ASoC: Could not allocate DAPM route table\n");
3564 for (i = 0; i < num_routes; i++) {
3565 ret = of_property_read_string_index(np, propname,
3566 2 * i, &routes[i].sink);
3569 "ASoC: Property '%s' index %d could not be read: %d\n",
3570 propname, 2 * i, ret);
3573 ret = of_property_read_string_index(np, propname,
3574 (2 * i) + 1, &routes[i].source);
3577 "ASoC: Property '%s' index %d could not be read: %d\n",
3578 propname, (2 * i) + 1, ret);
3583 card->num_of_dapm_routes = num_routes;
3584 card->of_dapm_routes = routes;
3588 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3590 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
3592 struct device_node **bitclkmaster,
3593 struct device_node **framemaster)
3597 unsigned int format = 0;
3603 } of_fmt_table[] = {
3604 { "i2s", SND_SOC_DAIFMT_I2S },
3605 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
3606 { "left_j", SND_SOC_DAIFMT_LEFT_J },
3607 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
3608 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
3609 { "ac97", SND_SOC_DAIFMT_AC97 },
3610 { "pdm", SND_SOC_DAIFMT_PDM},
3611 { "msb", SND_SOC_DAIFMT_MSB },
3612 { "lsb", SND_SOC_DAIFMT_LSB },
3619 * check "dai-format = xxx"
3620 * or "[prefix]format = xxx"
3621 * SND_SOC_DAIFMT_FORMAT_MASK area
3623 ret = of_property_read_string(np, "dai-format", &str);
3625 snprintf(prop, sizeof(prop), "%sformat", prefix);
3626 ret = of_property_read_string(np, prop, &str);
3629 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
3630 if (strcmp(str, of_fmt_table[i].name) == 0) {
3631 format |= of_fmt_table[i].val;
3638 * check "[prefix]continuous-clock"
3639 * SND_SOC_DAIFMT_CLOCK_MASK area
3641 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
3642 if (of_property_read_bool(np, prop))
3643 format |= SND_SOC_DAIFMT_CONT;
3645 format |= SND_SOC_DAIFMT_GATED;
3648 * check "[prefix]bitclock-inversion"
3649 * check "[prefix]frame-inversion"
3650 * SND_SOC_DAIFMT_INV_MASK area
3652 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
3653 bit = !!of_get_property(np, prop, NULL);
3655 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
3656 frame = !!of_get_property(np, prop, NULL);
3658 switch ((bit << 4) + frame) {
3660 format |= SND_SOC_DAIFMT_IB_IF;
3663 format |= SND_SOC_DAIFMT_IB_NF;
3666 format |= SND_SOC_DAIFMT_NB_IF;
3669 /* SND_SOC_DAIFMT_NB_NF is default */
3674 * check "[prefix]bitclock-master"
3675 * check "[prefix]frame-master"
3676 * SND_SOC_DAIFMT_MASTER_MASK area
3678 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
3679 bit = !!of_get_property(np, prop, NULL);
3680 if (bit && bitclkmaster)
3681 *bitclkmaster = of_parse_phandle(np, prop, 0);
3683 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
3684 frame = !!of_get_property(np, prop, NULL);
3685 if (frame && framemaster)
3686 *framemaster = of_parse_phandle(np, prop, 0);
3688 switch ((bit << 4) + frame) {
3690 format |= SND_SOC_DAIFMT_CBM_CFM;
3693 format |= SND_SOC_DAIFMT_CBM_CFS;
3696 format |= SND_SOC_DAIFMT_CBS_CFM;
3699 format |= SND_SOC_DAIFMT_CBS_CFS;
3705 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
3707 int snd_soc_get_dai_id(struct device_node *ep)
3709 struct snd_soc_component *pos;
3710 struct device_node *node;
3713 node = of_graph_get_port_parent(ep);
3716 * For example HDMI case, HDMI has video/sound port,
3717 * but ALSA SoC needs sound port number only.
3718 * Thus counting HDMI DT port/endpoint doesn't work.
3719 * Then, it should have .of_xlate_dai_id
3722 mutex_lock(&client_mutex);
3723 for_each_component(pos) {
3724 struct device_node *component_of_node = pos->dev->of_node;
3726 if (!component_of_node && pos->dev->parent)
3727 component_of_node = pos->dev->parent->of_node;
3729 if (component_of_node != node)
3732 if (pos->driver->of_xlate_dai_id)
3733 ret = pos->driver->of_xlate_dai_id(pos, ep);
3737 mutex_unlock(&client_mutex);
3743 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
3745 int snd_soc_get_dai_name(struct of_phandle_args *args,
3746 const char **dai_name)
3748 struct snd_soc_component *pos;
3749 struct device_node *component_of_node;
3750 int ret = -EPROBE_DEFER;
3752 mutex_lock(&client_mutex);
3753 for_each_component(pos) {
3754 component_of_node = pos->dev->of_node;
3755 if (!component_of_node && pos->dev->parent)
3756 component_of_node = pos->dev->parent->of_node;
3758 if (component_of_node != args->np)
3761 if (pos->driver->of_xlate_dai_name) {
3762 ret = pos->driver->of_xlate_dai_name(pos,
3766 struct snd_soc_dai *dai;
3769 switch (args->args_count) {
3771 id = 0; /* same as dai_drv[0] */
3781 if (id < 0 || id >= pos->num_dai) {
3788 /* find target DAI */
3789 for_each_component_dais(pos, dai) {
3795 *dai_name = dai->driver->name;
3797 *dai_name = pos->name;
3802 mutex_unlock(&client_mutex);
3805 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
3807 int snd_soc_of_get_dai_name(struct device_node *of_node,
3808 const char **dai_name)
3810 struct of_phandle_args args;
3813 ret = of_parse_phandle_with_args(of_node, "sound-dai",
3814 "#sound-dai-cells", 0, &args);
3818 ret = snd_soc_get_dai_name(&args, dai_name);
3820 of_node_put(args.np);
3824 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
3827 * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array
3828 * @dai_link: DAI link
3830 * Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs().
3832 void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link *dai_link)
3834 struct snd_soc_dai_link_component *component;
3837 for_each_link_codecs(dai_link, index, component) {
3838 if (!component->of_node)
3840 of_node_put(component->of_node);
3841 component->of_node = NULL;
3844 EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs);
3847 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3849 * @of_node: Device node
3850 * @dai_link: DAI link
3852 * Builds an array of CODEC DAI components from the DAI link property
3854 * The array is set in the DAI link and the number of DAIs is set accordingly.
3855 * The device nodes in the array (of_node) must be dereferenced by calling
3856 * snd_soc_of_put_dai_link_codecs() on @dai_link.
3858 * Returns 0 for success
3860 int snd_soc_of_get_dai_link_codecs(struct device *dev,
3861 struct device_node *of_node,
3862 struct snd_soc_dai_link *dai_link)
3864 struct of_phandle_args args;
3865 struct snd_soc_dai_link_component *component;
3867 int index, num_codecs, ret;
3869 /* Count the number of CODECs */
3871 num_codecs = of_count_phandle_with_args(of_node, name,
3872 "#sound-dai-cells");
3873 if (num_codecs <= 0) {
3874 if (num_codecs == -ENOENT)
3875 dev_err(dev, "No 'sound-dai' property\n");
3877 dev_err(dev, "Bad phandle in 'sound-dai'\n");
3880 component = devm_kcalloc(dev,
3881 num_codecs, sizeof(*component),
3885 dai_link->codecs = component;
3886 dai_link->num_codecs = num_codecs;
3888 /* Parse the list */
3889 for_each_link_codecs(dai_link, index, component) {
3890 ret = of_parse_phandle_with_args(of_node, name,
3895 component->of_node = args.np;
3896 ret = snd_soc_get_dai_name(&args, &component->dai_name);
3902 snd_soc_of_put_dai_link_codecs(dai_link);
3903 dai_link->codecs = NULL;
3904 dai_link->num_codecs = 0;
3907 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
3909 static int __init snd_soc_init(void)
3911 snd_soc_debugfs_init();
3912 snd_soc_util_init();
3914 return platform_driver_register(&soc_driver);
3916 module_init(snd_soc_init);
3918 static void __exit snd_soc_exit(void)
3920 snd_soc_util_exit();
3921 snd_soc_debugfs_exit();
3923 platform_driver_unregister(&soc_driver);
3925 module_exit(snd_soc_exit);
3927 /* Module information */
3928 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3929 MODULE_DESCRIPTION("ALSA SoC Core");
3930 MODULE_LICENSE("GPL");
3931 MODULE_ALIAS("platform:soc-audio");