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);
57 * This is a timeout to do a DAPM powerdown after a stream is closed().
58 * It can be used to eliminate pops between different playback streams, e.g.
59 * between two audio tracks.
61 static int pmdown_time = 5000;
62 module_param(pmdown_time, int, 0);
63 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
65 /* If a DMI filed contain strings in this blacklist (e.g.
66 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
67 * as invalid and dropped when setting the card long name from DMI info.
69 static const char * const dmi_blacklist[] = {
70 "To be filled by OEM",
76 NULL, /* terminator */
79 static ssize_t pmdown_time_show(struct device *dev,
80 struct device_attribute *attr, char *buf)
82 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
84 return sprintf(buf, "%ld\n", rtd->pmdown_time);
87 static ssize_t pmdown_time_set(struct device *dev,
88 struct device_attribute *attr,
89 const char *buf, size_t count)
91 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
94 ret = kstrtol(buf, 10, &rtd->pmdown_time);
101 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
103 static struct attribute *soc_dev_attrs[] = {
104 &dev_attr_pmdown_time.attr,
108 static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
109 struct attribute *attr, int idx)
111 struct device *dev = kobj_to_dev(kobj);
112 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
114 if (attr == &dev_attr_pmdown_time.attr)
115 return attr->mode; /* always visible */
116 return rtd->num_codecs ? attr->mode : 0; /* enabled only with codec */
119 static const struct attribute_group soc_dapm_dev_group = {
120 .attrs = soc_dapm_dev_attrs,
121 .is_visible = soc_dev_attr_is_visible,
124 static const struct attribute_group soc_dev_group = {
125 .attrs = soc_dev_attrs,
126 .is_visible = soc_dev_attr_is_visible,
129 static const struct attribute_group *soc_dev_attr_groups[] = {
135 #ifdef CONFIG_DEBUG_FS
136 static void soc_init_component_debugfs(struct snd_soc_component *component)
138 if (!component->card->debugfs_card_root)
141 if (component->debugfs_prefix) {
144 name = kasprintf(GFP_KERNEL, "%s:%s",
145 component->debugfs_prefix, component->name);
147 component->debugfs_root = debugfs_create_dir(name,
148 component->card->debugfs_card_root);
152 component->debugfs_root = debugfs_create_dir(component->name,
153 component->card->debugfs_card_root);
156 if (!component->debugfs_root) {
157 dev_warn(component->dev,
158 "ASoC: Failed to create component debugfs directory\n");
162 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
163 component->debugfs_root);
166 static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
168 debugfs_remove_recursive(component->debugfs_root);
171 static int dai_list_show(struct seq_file *m, void *v)
173 struct snd_soc_component *component;
174 struct snd_soc_dai *dai;
176 mutex_lock(&client_mutex);
178 list_for_each_entry(component, &component_list, list)
179 list_for_each_entry(dai, &component->dai_list, list)
180 seq_printf(m, "%s\n", dai->name);
182 mutex_unlock(&client_mutex);
186 DEFINE_SHOW_ATTRIBUTE(dai_list);
188 static int component_list_show(struct seq_file *m, void *v)
190 struct snd_soc_component *component;
192 mutex_lock(&client_mutex);
194 list_for_each_entry(component, &component_list, list)
195 seq_printf(m, "%s\n", component->name);
197 mutex_unlock(&client_mutex);
201 DEFINE_SHOW_ATTRIBUTE(component_list);
203 static void soc_init_card_debugfs(struct snd_soc_card *card)
205 if (!snd_soc_debugfs_root)
208 card->debugfs_card_root = debugfs_create_dir(card->name,
209 snd_soc_debugfs_root);
210 if (!card->debugfs_card_root) {
212 "ASoC: Failed to create card debugfs directory\n");
216 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
217 card->debugfs_card_root,
219 if (!card->debugfs_pop_time)
221 "ASoC: Failed to create pop time debugfs file\n");
224 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
226 debugfs_remove_recursive(card->debugfs_card_root);
229 static void snd_soc_debugfs_init(void)
231 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
232 if (IS_ERR_OR_NULL(snd_soc_debugfs_root)) {
233 pr_warn("ASoC: Failed to create debugfs directory\n");
234 snd_soc_debugfs_root = NULL;
238 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
240 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
242 if (!debugfs_create_file("components", 0444, snd_soc_debugfs_root, NULL,
243 &component_list_fops))
244 pr_warn("ASoC: Failed to create component list debugfs file\n");
247 static void snd_soc_debugfs_exit(void)
249 debugfs_remove_recursive(snd_soc_debugfs_root);
254 static inline void soc_init_component_debugfs(
255 struct snd_soc_component *component)
259 static inline void soc_cleanup_component_debugfs(
260 struct snd_soc_component *component)
264 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
268 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
272 static inline void snd_soc_debugfs_init(void)
276 static inline void snd_soc_debugfs_exit(void)
282 static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime *rtd,
283 struct snd_soc_component *component)
285 struct snd_soc_rtdcom_list *rtdcom;
286 struct snd_soc_rtdcom_list *new_rtdcom;
288 for_each_rtdcom(rtd, rtdcom) {
289 /* already connected */
290 if (rtdcom->component == component)
294 new_rtdcom = kmalloc(sizeof(*new_rtdcom), GFP_KERNEL);
298 new_rtdcom->component = component;
299 INIT_LIST_HEAD(&new_rtdcom->list);
301 list_add_tail(&new_rtdcom->list, &rtd->component_list);
306 static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime *rtd)
308 struct snd_soc_rtdcom_list *rtdcom1, *rtdcom2;
310 for_each_rtdcom_safe(rtd, rtdcom1, rtdcom2)
313 INIT_LIST_HEAD(&rtd->component_list);
316 struct snd_soc_component *snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd,
317 const char *driver_name)
319 struct snd_soc_rtdcom_list *rtdcom;
324 for_each_rtdcom(rtd, rtdcom) {
325 const char *component_name = rtdcom->component->driver->name;
330 if ((component_name == driver_name) ||
331 strcmp(component_name, driver_name) == 0)
332 return rtdcom->component;
337 EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup);
339 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
340 const char *dai_link, int stream)
342 struct snd_soc_pcm_runtime *rtd;
344 list_for_each_entry(rtd, &card->rtd_list, list) {
345 if (rtd->dai_link->no_pcm &&
346 !strcmp(rtd->dai_link->name, dai_link))
347 return rtd->pcm->streams[stream].substream;
349 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
352 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
354 static const struct snd_soc_ops null_snd_soc_ops;
356 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
357 struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
359 struct snd_soc_pcm_runtime *rtd;
361 rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
365 INIT_LIST_HEAD(&rtd->component_list);
367 rtd->dai_link = dai_link;
368 if (!rtd->dai_link->ops)
369 rtd->dai_link->ops = &null_snd_soc_ops;
371 rtd->codec_dais = kcalloc(dai_link->num_codecs,
372 sizeof(struct snd_soc_dai *),
374 if (!rtd->codec_dais) {
382 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
384 kfree(rtd->codec_dais);
385 snd_soc_rtdcom_del_all(rtd);
389 static void soc_add_pcm_runtime(struct snd_soc_card *card,
390 struct snd_soc_pcm_runtime *rtd)
392 list_add_tail(&rtd->list, &card->rtd_list);
393 rtd->num = card->num_rtd;
397 static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
399 struct snd_soc_pcm_runtime *rtd, *_rtd;
401 list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) {
402 list_del(&rtd->list);
403 soc_free_pcm_runtime(rtd);
409 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
410 const char *dai_link)
412 struct snd_soc_pcm_runtime *rtd;
414 list_for_each_entry(rtd, &card->rtd_list, list) {
415 if (!strcmp(rtd->dai_link->name, dai_link))
418 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
421 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
423 static void codec2codec_close_delayed_work(struct work_struct *work)
425 /* Currently nothing to do for c2c links
426 * Since c2c links are internal nodes in the DAPM graph and
427 * don't interface with the outside world or application layer
428 * we don't have to do any special handling on close.
432 #ifdef CONFIG_PM_SLEEP
433 /* powers down audio subsystem for suspend */
434 int snd_soc_suspend(struct device *dev)
436 struct snd_soc_card *card = dev_get_drvdata(dev);
437 struct snd_soc_component *component;
438 struct snd_soc_pcm_runtime *rtd;
441 /* If the card is not initialized yet there is nothing to do */
442 if (!card->instantiated)
445 /* Due to the resume being scheduled into a workqueue we could
446 * suspend before that's finished - wait for it to complete.
448 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
450 /* we're going to block userspace touching us until resume completes */
451 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
453 /* mute any active DACs */
454 list_for_each_entry(rtd, &card->rtd_list, list) {
456 if (rtd->dai_link->ignore_suspend)
459 for (i = 0; i < rtd->num_codecs; i++) {
460 struct snd_soc_dai *dai = rtd->codec_dais[i];
461 struct snd_soc_dai_driver *drv = dai->driver;
463 if (drv->ops->digital_mute && dai->playback_active)
464 drv->ops->digital_mute(dai, 1);
468 /* suspend all pcms */
469 list_for_each_entry(rtd, &card->rtd_list, list) {
470 if (rtd->dai_link->ignore_suspend)
473 snd_pcm_suspend_all(rtd->pcm);
476 if (card->suspend_pre)
477 card->suspend_pre(card);
479 list_for_each_entry(rtd, &card->rtd_list, list) {
480 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
482 if (rtd->dai_link->ignore_suspend)
485 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
486 cpu_dai->driver->suspend(cpu_dai);
489 /* close any waiting streams */
490 list_for_each_entry(rtd, &card->rtd_list, list)
491 flush_delayed_work(&rtd->delayed_work);
493 list_for_each_entry(rtd, &card->rtd_list, list) {
495 if (rtd->dai_link->ignore_suspend)
498 snd_soc_dapm_stream_event(rtd,
499 SNDRV_PCM_STREAM_PLAYBACK,
500 SND_SOC_DAPM_STREAM_SUSPEND);
502 snd_soc_dapm_stream_event(rtd,
503 SNDRV_PCM_STREAM_CAPTURE,
504 SND_SOC_DAPM_STREAM_SUSPEND);
507 /* Recheck all endpoints too, their state is affected by suspend */
508 dapm_mark_endpoints_dirty(card);
509 snd_soc_dapm_sync(&card->dapm);
511 /* suspend all COMPONENTs */
512 list_for_each_entry(component, &card->component_dev_list, card_list) {
513 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
515 /* If there are paths active then the COMPONENT will be held with
516 * bias _ON and should not be suspended. */
517 if (!component->suspended) {
518 switch (snd_soc_dapm_get_bias_level(dapm)) {
519 case SND_SOC_BIAS_STANDBY:
521 * If the COMPONENT is capable of idle
522 * bias off then being in STANDBY
523 * means it's doing something,
524 * otherwise fall through.
526 if (dapm->idle_bias_off) {
527 dev_dbg(component->dev,
528 "ASoC: idle_bias_off CODEC on over suspend\n");
533 case SND_SOC_BIAS_OFF:
534 if (component->driver->suspend)
535 component->driver->suspend(component);
536 component->suspended = 1;
537 if (component->regmap)
538 regcache_mark_dirty(component->regmap);
539 /* deactivate pins to sleep state */
540 pinctrl_pm_select_sleep_state(component->dev);
543 dev_dbg(component->dev,
544 "ASoC: COMPONENT is on over suspend\n");
550 list_for_each_entry(rtd, &card->rtd_list, list) {
551 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
553 if (rtd->dai_link->ignore_suspend)
556 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
557 cpu_dai->driver->suspend(cpu_dai);
559 /* deactivate pins to sleep state */
560 pinctrl_pm_select_sleep_state(cpu_dai->dev);
563 if (card->suspend_post)
564 card->suspend_post(card);
568 EXPORT_SYMBOL_GPL(snd_soc_suspend);
570 /* deferred resume work, so resume can complete before we finished
571 * setting our codec back up, which can be very slow on I2C
573 static void soc_resume_deferred(struct work_struct *work)
575 struct snd_soc_card *card =
576 container_of(work, struct snd_soc_card, deferred_resume_work);
577 struct snd_soc_pcm_runtime *rtd;
578 struct snd_soc_component *component;
581 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
582 * so userspace apps are blocked from touching us
585 dev_dbg(card->dev, "ASoC: starting resume work\n");
587 /* Bring us up into D2 so that DAPM starts enabling things */
588 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
590 if (card->resume_pre)
591 card->resume_pre(card);
593 /* resume control bus DAIs */
594 list_for_each_entry(rtd, &card->rtd_list, list) {
595 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
597 if (rtd->dai_link->ignore_suspend)
600 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
601 cpu_dai->driver->resume(cpu_dai);
604 list_for_each_entry(component, &card->component_dev_list, card_list) {
605 if (component->suspended) {
606 if (component->driver->resume)
607 component->driver->resume(component);
608 component->suspended = 0;
612 list_for_each_entry(rtd, &card->rtd_list, list) {
614 if (rtd->dai_link->ignore_suspend)
617 snd_soc_dapm_stream_event(rtd,
618 SNDRV_PCM_STREAM_PLAYBACK,
619 SND_SOC_DAPM_STREAM_RESUME);
621 snd_soc_dapm_stream_event(rtd,
622 SNDRV_PCM_STREAM_CAPTURE,
623 SND_SOC_DAPM_STREAM_RESUME);
626 /* unmute any active DACs */
627 list_for_each_entry(rtd, &card->rtd_list, list) {
629 if (rtd->dai_link->ignore_suspend)
632 for (i = 0; i < rtd->num_codecs; i++) {
633 struct snd_soc_dai *dai = rtd->codec_dais[i];
634 struct snd_soc_dai_driver *drv = dai->driver;
636 if (drv->ops->digital_mute && dai->playback_active)
637 drv->ops->digital_mute(dai, 0);
641 list_for_each_entry(rtd, &card->rtd_list, list) {
642 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
644 if (rtd->dai_link->ignore_suspend)
647 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
648 cpu_dai->driver->resume(cpu_dai);
651 if (card->resume_post)
652 card->resume_post(card);
654 dev_dbg(card->dev, "ASoC: resume work completed\n");
656 /* Recheck all endpoints too, their state is affected by suspend */
657 dapm_mark_endpoints_dirty(card);
658 snd_soc_dapm_sync(&card->dapm);
660 /* userspace can access us now we are back as we were before */
661 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
664 /* powers up audio subsystem after a suspend */
665 int snd_soc_resume(struct device *dev)
667 struct snd_soc_card *card = dev_get_drvdata(dev);
668 bool bus_control = false;
669 struct snd_soc_pcm_runtime *rtd;
671 /* If the card is not initialized yet there is nothing to do */
672 if (!card->instantiated)
675 /* activate pins from sleep state */
676 list_for_each_entry(rtd, &card->rtd_list, list) {
677 struct snd_soc_dai **codec_dais = rtd->codec_dais;
678 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
682 pinctrl_pm_select_default_state(cpu_dai->dev);
684 for (j = 0; j < rtd->num_codecs; j++) {
685 struct snd_soc_dai *codec_dai = codec_dais[j];
686 if (codec_dai->active)
687 pinctrl_pm_select_default_state(codec_dai->dev);
692 * DAIs that also act as the control bus master might have other drivers
693 * hanging off them so need to resume immediately. Other drivers don't
694 * have that problem and may take a substantial amount of time to resume
695 * due to I/O costs and anti-pop so handle them out of line.
697 list_for_each_entry(rtd, &card->rtd_list, list) {
698 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
699 bus_control |= cpu_dai->driver->bus_control;
702 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
703 soc_resume_deferred(&card->deferred_resume_work);
705 dev_dbg(dev, "ASoC: Scheduling resume work\n");
706 if (!schedule_work(&card->deferred_resume_work))
707 dev_err(dev, "ASoC: resume work item may be lost\n");
712 EXPORT_SYMBOL_GPL(snd_soc_resume);
714 #define snd_soc_suspend NULL
715 #define snd_soc_resume NULL
718 static const struct snd_soc_dai_ops null_dai_ops = {
721 static struct snd_soc_component *soc_find_component(
722 const struct device_node *of_node, const char *name)
724 struct snd_soc_component *component;
726 lockdep_assert_held(&client_mutex);
728 list_for_each_entry(component, &component_list, list) {
730 if (component->dev->of_node == of_node)
732 } else if (strcmp(component->name, name) == 0) {
741 * snd_soc_find_dai - Find a registered DAI
743 * @dlc: name of the DAI or the DAI driver and optional component info to match
745 * This function will search all registered components and their DAIs to
746 * find the DAI of the same name. The component's of_node and name
747 * should also match if being specified.
749 * Return: pointer of DAI, or NULL if not found.
751 struct snd_soc_dai *snd_soc_find_dai(
752 const struct snd_soc_dai_link_component *dlc)
754 struct snd_soc_component *component;
755 struct snd_soc_dai *dai;
756 struct device_node *component_of_node;
758 lockdep_assert_held(&client_mutex);
760 /* Find CPU DAI from registered DAIs*/
761 list_for_each_entry(component, &component_list, list) {
762 component_of_node = component->dev->of_node;
763 if (!component_of_node && component->dev->parent)
764 component_of_node = component->dev->parent->of_node;
766 if (dlc->of_node && component_of_node != dlc->of_node)
768 if (dlc->name && strcmp(component->name, dlc->name))
770 list_for_each_entry(dai, &component->dai_list, list) {
771 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
772 && (!dai->driver->name
773 || strcmp(dai->driver->name, dlc->dai_name)))
782 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
786 * snd_soc_find_dai_link - Find a DAI link
789 * @id: DAI link ID to match
790 * @name: DAI link name to match, optional
791 * @stream_name: DAI link stream name to match, optional
793 * This function will search all existing DAI links of the soc card to
794 * find the link of the same ID. Since DAI links may not have their
795 * unique ID, so name and stream name should also match if being
798 * Return: pointer of DAI link, or NULL if not found.
800 struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
801 int id, const char *name,
802 const char *stream_name)
804 struct snd_soc_dai_link *link, *_link;
806 lockdep_assert_held(&client_mutex);
808 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
812 if (name && (!link->name || strcmp(name, link->name)))
815 if (stream_name && (!link->stream_name
816 || strcmp(stream_name, link->stream_name)))
824 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
826 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
827 struct snd_soc_dai_link *dai_link)
829 struct snd_soc_pcm_runtime *rtd;
831 list_for_each_entry(rtd, &card->rtd_list, list) {
832 if (rtd->dai_link == dai_link)
839 static int soc_bind_dai_link(struct snd_soc_card *card,
840 struct snd_soc_dai_link *dai_link)
842 struct snd_soc_pcm_runtime *rtd;
843 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
844 struct snd_soc_dai_link_component cpu_dai_component;
845 struct snd_soc_component *component;
846 struct snd_soc_dai **codec_dais;
847 struct device_node *platform_of_node;
848 const char *platform_name;
851 if (dai_link->ignore)
854 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
856 if (soc_is_dai_link_bound(card, dai_link)) {
857 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
862 rtd = soc_new_pcm_runtime(card, dai_link);
866 cpu_dai_component.name = dai_link->cpu_name;
867 cpu_dai_component.of_node = dai_link->cpu_of_node;
868 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
869 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
871 dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
872 dai_link->cpu_dai_name);
875 snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
877 rtd->num_codecs = dai_link->num_codecs;
879 /* Find CODEC from registered CODECs */
880 codec_dais = rtd->codec_dais;
881 for (i = 0; i < rtd->num_codecs; i++) {
882 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
883 if (!codec_dais[i]) {
884 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
888 snd_soc_rtdcom_add(rtd, codec_dais[i]->component);
891 /* Single codec links expect codec and codec_dai in runtime data */
892 rtd->codec_dai = codec_dais[0];
894 /* if there's no platform we match on the empty platform */
895 platform_name = dai_link->platform->name;
896 if (!platform_name && !dai_link->platform->of_node)
897 platform_name = "snd-soc-dummy";
899 /* find one from the set of registered platforms */
900 list_for_each_entry(component, &component_list, list) {
901 platform_of_node = component->dev->of_node;
902 if (!platform_of_node && component->dev->parent->of_node)
903 platform_of_node = component->dev->parent->of_node;
905 if (dai_link->platform->of_node) {
906 if (platform_of_node != dai_link->platform->of_node)
909 if (strcmp(component->name, platform_name))
913 snd_soc_rtdcom_add(rtd, component);
916 soc_add_pcm_runtime(card, rtd);
920 soc_free_pcm_runtime(rtd);
921 return -EPROBE_DEFER;
924 static void soc_remove_component(struct snd_soc_component *component)
926 if (!component->card)
929 list_del(&component->card_list);
931 if (component->driver->remove)
932 component->driver->remove(component);
934 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
936 soc_cleanup_component_debugfs(component);
937 component->card = NULL;
938 module_put(component->dev->driver->owner);
941 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
945 if (dai && dai->probed &&
946 dai->driver->remove_order == order) {
947 if (dai->driver->remove) {
948 err = dai->driver->remove(dai);
951 "ASoC: failed to remove %s: %d\n",
958 static void soc_remove_link_dais(struct snd_soc_card *card,
959 struct snd_soc_pcm_runtime *rtd, int order)
963 /* unregister the rtd device */
964 if (rtd->dev_registered) {
965 device_unregister(rtd->dev);
966 rtd->dev_registered = 0;
969 /* remove the CODEC DAI */
970 for (i = 0; i < rtd->num_codecs; i++)
971 soc_remove_dai(rtd->codec_dais[i], order);
973 soc_remove_dai(rtd->cpu_dai, order);
976 static void soc_remove_link_components(struct snd_soc_card *card,
977 struct snd_soc_pcm_runtime *rtd, int order)
979 struct snd_soc_component *component;
980 struct snd_soc_rtdcom_list *rtdcom;
982 for_each_rtdcom(rtd, rtdcom) {
983 component = rtdcom->component;
985 if (component->driver->remove_order == order)
986 soc_remove_component(component);
990 static void soc_remove_dai_links(struct snd_soc_card *card)
993 struct snd_soc_pcm_runtime *rtd;
994 struct snd_soc_dai_link *link, *_link;
996 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
998 list_for_each_entry(rtd, &card->rtd_list, list)
999 soc_remove_link_dais(card, rtd, order);
1002 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1004 list_for_each_entry(rtd, &card->rtd_list, list)
1005 soc_remove_link_components(card, rtd, order);
1008 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1009 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1010 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1013 list_del(&link->list);
1014 card->num_dai_links--;
1018 static int snd_soc_init_platform(struct snd_soc_card *card,
1019 struct snd_soc_dai_link *dai_link)
1024 * this function should be removed in the future
1026 /* convert Legacy platform link */
1027 if (dai_link->platform)
1030 dai_link->platform = devm_kzalloc(card->dev,
1031 sizeof(struct snd_soc_dai_link_component),
1033 if (!dai_link->platform)
1036 dai_link->platform->name = dai_link->platform_name;
1037 dai_link->platform->of_node = dai_link->platform_of_node;
1038 dai_link->platform->dai_name = NULL;
1043 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1044 struct snd_soc_dai_link *dai_link)
1046 /* Legacy codec/codec_dai link is a single entry in multicodec */
1047 if (dai_link->codec_name || dai_link->codec_of_node ||
1048 dai_link->codec_dai_name) {
1049 dai_link->num_codecs = 1;
1051 dai_link->codecs = devm_kzalloc(card->dev,
1052 sizeof(struct snd_soc_dai_link_component),
1054 if (!dai_link->codecs)
1057 dai_link->codecs[0].name = dai_link->codec_name;
1058 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1059 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1062 if (!dai_link->codecs) {
1063 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1070 static int soc_init_dai_link(struct snd_soc_card *card,
1071 struct snd_soc_dai_link *link)
1075 ret = snd_soc_init_platform(card, link);
1077 dev_err(card->dev, "ASoC: failed to init multiplatform\n");
1081 ret = snd_soc_init_multicodec(card, link);
1083 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1087 for (i = 0; i < link->num_codecs; i++) {
1089 * Codec must be specified by 1 of name or OF node,
1090 * not both or neither.
1092 if (!!link->codecs[i].name ==
1093 !!link->codecs[i].of_node) {
1094 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1098 /* Codec DAI name must be specified */
1099 if (!link->codecs[i].dai_name) {
1100 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1107 * Platform may be specified by either name or OF node, but
1108 * can be left unspecified, and a dummy platform will be used.
1110 if (link->platform->name && link->platform->of_node) {
1112 "ASoC: Both platform name/of_node are set for %s\n",
1117 * CPU device may be specified by either name or OF node, but
1118 * can be left unspecified, and will be matched based on DAI
1121 if (link->cpu_name && link->cpu_of_node) {
1123 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1128 * At least one of CPU DAI name or CPU device name/node must be
1131 if (!link->cpu_dai_name &&
1132 !(link->cpu_name || link->cpu_of_node)) {
1134 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1142 void snd_soc_disconnect_sync(struct device *dev)
1144 struct snd_soc_component *component = snd_soc_lookup_component(dev, NULL);
1146 if (!component || !component->card)
1149 snd_card_disconnect_sync(component->card->snd_card);
1151 EXPORT_SYMBOL_GPL(snd_soc_disconnect_sync);
1154 * snd_soc_add_dai_link - Add a DAI link dynamically
1155 * @card: The ASoC card to which the DAI link is added
1156 * @dai_link: The new DAI link to add
1158 * This function adds a DAI link to the ASoC card's link list.
1160 * Note: Topology can use this API to add DAI links when probing the
1161 * topology component. And machine drivers can still define static
1162 * DAI links in dai_link array.
1164 int snd_soc_add_dai_link(struct snd_soc_card *card,
1165 struct snd_soc_dai_link *dai_link)
1167 if (dai_link->dobj.type
1168 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1169 dev_err(card->dev, "Invalid dai link type %d\n",
1170 dai_link->dobj.type);
1174 lockdep_assert_held(&client_mutex);
1175 /* Notify the machine driver for extra initialization
1176 * on the link created by topology.
1178 if (dai_link->dobj.type && card->add_dai_link)
1179 card->add_dai_link(card, dai_link);
1181 list_add_tail(&dai_link->list, &card->dai_link_list);
1182 card->num_dai_links++;
1186 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1189 * snd_soc_remove_dai_link - Remove a DAI link from the list
1190 * @card: The ASoC card that owns the link
1191 * @dai_link: The DAI link to remove
1193 * This function removes a DAI link from the ASoC card's link list.
1195 * For DAI links previously added by topology, topology should
1196 * remove them by using the dobj embedded in the link.
1198 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1199 struct snd_soc_dai_link *dai_link)
1201 struct snd_soc_dai_link *link, *_link;
1203 if (dai_link->dobj.type
1204 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1205 dev_err(card->dev, "Invalid dai link type %d\n",
1206 dai_link->dobj.type);
1210 lockdep_assert_held(&client_mutex);
1211 /* Notify the machine driver for extra destruction
1212 * on the link created by topology.
1214 if (dai_link->dobj.type && card->remove_dai_link)
1215 card->remove_dai_link(card, dai_link);
1217 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1218 if (link == dai_link) {
1219 list_del(&link->list);
1220 card->num_dai_links--;
1225 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1227 static void soc_set_of_name_prefix(struct snd_soc_component *component)
1229 struct device_node *component_of_node = component->dev->of_node;
1233 if (!component_of_node && component->dev->parent)
1234 component_of_node = component->dev->parent->of_node;
1236 ret = of_property_read_string(component_of_node, "sound-name-prefix",
1239 component->name_prefix = str;
1242 static void soc_set_name_prefix(struct snd_soc_card *card,
1243 struct snd_soc_component *component)
1247 for (i = 0; i < card->num_configs && card->codec_conf; i++) {
1248 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1249 struct device_node *component_of_node = component->dev->of_node;
1251 if (!component_of_node && component->dev->parent)
1252 component_of_node = component->dev->parent->of_node;
1254 if (map->of_node && component_of_node != map->of_node)
1256 if (map->dev_name && strcmp(component->name, map->dev_name))
1258 component->name_prefix = map->name_prefix;
1263 * If there is no configuration table or no match in the table,
1264 * check if a prefix is provided in the node
1266 soc_set_of_name_prefix(component);
1269 static int soc_probe_component(struct snd_soc_card *card,
1270 struct snd_soc_component *component)
1272 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1273 struct snd_soc_dai *dai;
1276 if (!strcmp(component->name, "snd-soc-dummy"))
1279 if (component->card) {
1280 if (component->card != card) {
1281 dev_err(component->dev,
1282 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1283 card->name, component->card->name);
1289 if (!try_module_get(component->dev->driver->owner))
1292 component->card = card;
1294 soc_set_name_prefix(card, component);
1296 soc_init_component_debugfs(component);
1298 if (component->driver->dapm_widgets) {
1299 ret = snd_soc_dapm_new_controls(dapm,
1300 component->driver->dapm_widgets,
1301 component->driver->num_dapm_widgets);
1304 dev_err(component->dev,
1305 "Failed to create new controls %d\n", ret);
1310 list_for_each_entry(dai, &component->dai_list, list) {
1311 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1313 dev_err(component->dev,
1314 "Failed to create DAI widgets %d\n", ret);
1319 if (component->driver->probe) {
1320 ret = component->driver->probe(component);
1322 dev_err(component->dev,
1323 "ASoC: failed to probe component %d\n", ret);
1327 WARN(dapm->idle_bias_off &&
1328 dapm->bias_level != SND_SOC_BIAS_OFF,
1329 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1333 /* machine specific init */
1334 if (component->init) {
1335 ret = component->init(component);
1337 dev_err(component->dev,
1338 "Failed to do machine specific init %d\n", ret);
1343 if (component->driver->controls)
1344 snd_soc_add_component_controls(component,
1345 component->driver->controls,
1346 component->driver->num_controls);
1347 if (component->driver->dapm_routes)
1348 snd_soc_dapm_add_routes(dapm,
1349 component->driver->dapm_routes,
1350 component->driver->num_dapm_routes);
1352 list_add(&dapm->list, &card->dapm_list);
1353 list_add(&component->card_list, &card->component_dev_list);
1358 soc_cleanup_component_debugfs(component);
1359 component->card = NULL;
1360 module_put(component->dev->driver->owner);
1365 static void rtd_release(struct device *dev)
1370 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1375 /* register the rtd device */
1376 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1379 device_initialize(rtd->dev);
1380 rtd->dev->parent = rtd->card->dev;
1381 rtd->dev->release = rtd_release;
1382 rtd->dev->groups = soc_dev_attr_groups;
1383 dev_set_name(rtd->dev, "%s", name);
1384 dev_set_drvdata(rtd->dev, rtd);
1385 mutex_init(&rtd->pcm_mutex);
1386 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1387 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1388 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1389 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1390 ret = device_add(rtd->dev);
1392 /* calling put_device() here to free the rtd->dev */
1393 put_device(rtd->dev);
1394 dev_err(rtd->card->dev,
1395 "ASoC: failed to register runtime device: %d\n", ret);
1398 rtd->dev_registered = 1;
1402 static int soc_probe_link_components(struct snd_soc_card *card,
1403 struct snd_soc_pcm_runtime *rtd,
1406 struct snd_soc_component *component;
1407 struct snd_soc_rtdcom_list *rtdcom;
1410 for_each_rtdcom(rtd, rtdcom) {
1411 component = rtdcom->component;
1413 if (component->driver->probe_order == order) {
1414 ret = soc_probe_component(card, component);
1423 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1426 dai->driver->probe_order != order)
1429 if (dai->driver->probe) {
1430 int ret = dai->driver->probe(dai);
1432 dev_err(dai->dev, "ASoC: failed to probe DAI %s: %d\n",
1443 static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais,
1444 struct snd_soc_pcm_runtime *rtd)
1448 for (i = 0; i < num_dais; ++i) {
1449 struct snd_soc_dai_driver *drv = dais[i]->driver;
1451 if (!rtd->dai_link->no_pcm && drv->pcm_new)
1452 ret = drv->pcm_new(rtd, dais[i]);
1454 dev_err(dais[i]->dev,
1455 "ASoC: Failed to bind %s with pcm device\n",
1464 static int soc_link_dai_widgets(struct snd_soc_card *card,
1465 struct snd_soc_dai_link *dai_link,
1466 struct snd_soc_pcm_runtime *rtd)
1468 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1469 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1470 struct snd_soc_dapm_widget *sink, *source;
1473 if (rtd->num_codecs > 1)
1474 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1476 /* link the DAI widgets */
1477 sink = codec_dai->playback_widget;
1478 source = cpu_dai->capture_widget;
1479 if (sink && source) {
1480 ret = snd_soc_dapm_new_pcm(card, rtd, dai_link->params,
1481 dai_link->num_params,
1484 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1485 sink->name, source->name, ret);
1490 sink = cpu_dai->playback_widget;
1491 source = codec_dai->capture_widget;
1492 if (sink && source) {
1493 ret = snd_soc_dapm_new_pcm(card, rtd, dai_link->params,
1494 dai_link->num_params,
1497 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1498 sink->name, source->name, ret);
1506 static int soc_probe_link_dais(struct snd_soc_card *card,
1507 struct snd_soc_pcm_runtime *rtd, int order)
1509 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1510 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1511 struct snd_soc_rtdcom_list *rtdcom;
1512 struct snd_soc_component *component;
1515 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1516 card->name, rtd->num, order);
1518 /* set default power off timeout */
1519 rtd->pmdown_time = pmdown_time;
1521 ret = soc_probe_dai(cpu_dai, order);
1525 /* probe the CODEC DAI */
1526 for (i = 0; i < rtd->num_codecs; i++) {
1527 ret = soc_probe_dai(rtd->codec_dais[i], order);
1532 /* complete DAI probe during last probe */
1533 if (order != SND_SOC_COMP_ORDER_LAST)
1536 /* do machine specific initialization */
1537 if (dai_link->init) {
1538 ret = dai_link->init(rtd);
1540 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1541 dai_link->name, ret);
1546 if (dai_link->dai_fmt)
1547 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1549 ret = soc_post_component_init(rtd, dai_link->name);
1553 #ifdef CONFIG_DEBUG_FS
1554 /* add DPCM sysfs entries */
1555 if (dai_link->dynamic)
1556 soc_dpcm_debugfs_add(rtd);
1562 * most drivers will register their PCMs using DAI link ordering but
1563 * topology based drivers can use the DAI link id field to set PCM
1564 * device number and then use rtd + a base offset of the BEs.
1566 for_each_rtdcom(rtd, rtdcom) {
1567 component = rtdcom->component;
1569 if (!component->driver->use_dai_pcm_id)
1572 if (rtd->dai_link->no_pcm)
1573 num += component->driver->be_pcm_base;
1575 num = rtd->dai_link->id;
1578 if (cpu_dai->driver->compress_new) {
1579 /*create compress_device"*/
1580 ret = cpu_dai->driver->compress_new(rtd, num);
1582 dev_err(card->dev, "ASoC: can't create compress %s\n",
1583 dai_link->stream_name);
1588 if (!dai_link->params) {
1589 /* create the pcm */
1590 ret = soc_new_pcm(rtd, num);
1592 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1593 dai_link->stream_name, ret);
1596 ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd);
1599 ret = soc_link_dai_pcm_new(rtd->codec_dais,
1600 rtd->num_codecs, rtd);
1604 INIT_DELAYED_WORK(&rtd->delayed_work,
1605 codec2codec_close_delayed_work);
1607 /* link the DAI widgets */
1608 ret = soc_link_dai_widgets(card, dai_link, rtd);
1617 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1619 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1620 struct snd_soc_component *component;
1622 struct device_node *codec_of_node;
1624 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1625 /* codecs, usually analog devices */
1626 name = aux_dev->codec_name;
1627 codec_of_node = aux_dev->codec_of_node;
1628 component = soc_find_component(codec_of_node, name);
1631 name = of_node_full_name(codec_of_node);
1634 } else if (aux_dev->name) {
1635 /* generic components */
1636 name = aux_dev->name;
1637 component = soc_find_component(NULL, name);
1641 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1645 component->init = aux_dev->init;
1646 list_add(&component->card_aux_list, &card->aux_comp_list);
1651 dev_err(card->dev, "ASoC: %s not registered\n", name);
1652 return -EPROBE_DEFER;
1655 static int soc_probe_aux_devices(struct snd_soc_card *card)
1657 struct snd_soc_component *comp;
1661 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1663 list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) {
1664 if (comp->driver->probe_order == order) {
1665 ret = soc_probe_component(card, comp);
1668 "ASoC: failed to probe aux component %s %d\n",
1679 static void soc_remove_aux_devices(struct snd_soc_card *card)
1681 struct snd_soc_component *comp, *_comp;
1684 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1686 list_for_each_entry_safe(comp, _comp,
1687 &card->aux_comp_list, card_aux_list) {
1689 if (comp->driver->remove_order == order) {
1690 soc_remove_component(comp);
1691 /* remove it from the card's aux_comp_list */
1692 list_del(&comp->card_aux_list);
1699 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1700 * @rtd: The runtime for which the DAI link format should be changed
1701 * @dai_fmt: The new DAI link format
1703 * This function updates the DAI link format for all DAIs connected to the DAI
1704 * link for the specified runtime.
1706 * Note: For setups with a static format set the dai_fmt field in the
1707 * corresponding snd_dai_link struct instead of using this function.
1709 * Returns 0 on success, otherwise a negative error code.
1711 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1712 unsigned int dai_fmt)
1714 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1715 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1719 for (i = 0; i < rtd->num_codecs; i++) {
1720 struct snd_soc_dai *codec_dai = codec_dais[i];
1722 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1723 if (ret != 0 && ret != -ENOTSUPP) {
1724 dev_warn(codec_dai->dev,
1725 "ASoC: Failed to set DAI format: %d\n", ret);
1730 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1731 /* the component which has non_legacy_dai_naming is Codec */
1732 if (cpu_dai->component->driver->non_legacy_dai_naming) {
1733 unsigned int inv_dai_fmt;
1735 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1736 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1737 case SND_SOC_DAIFMT_CBM_CFM:
1738 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1740 case SND_SOC_DAIFMT_CBM_CFS:
1741 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1743 case SND_SOC_DAIFMT_CBS_CFM:
1744 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1746 case SND_SOC_DAIFMT_CBS_CFS:
1747 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1751 dai_fmt = inv_dai_fmt;
1754 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1755 if (ret != 0 && ret != -ENOTSUPP) {
1756 dev_warn(cpu_dai->dev,
1757 "ASoC: Failed to set DAI format: %d\n", ret);
1763 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
1767 /* Trim special characters, and replace '-' with '_' since '-' is used to
1768 * separate different DMI fields in the card long name. Only number and
1769 * alphabet characters and a few separator characters are kept.
1771 static void cleanup_dmi_name(char *name)
1775 for (i = 0; name[i]; i++) {
1776 if (isalnum(name[i]) || (name[i] == '.')
1777 || (name[i] == '_'))
1778 name[j++] = name[i];
1779 else if (name[i] == '-')
1786 /* Check if a DMI field is valid, i.e. not containing any string
1787 * in the black list.
1789 static int is_dmi_valid(const char *field)
1793 while (dmi_blacklist[i]) {
1794 if (strstr(field, dmi_blacklist[i]))
1803 * snd_soc_set_dmi_name() - Register DMI names to card
1804 * @card: The card to register DMI names
1805 * @flavour: The flavour "differentiator" for the card amongst its peers.
1807 * An Intel machine driver may be used by many different devices but are
1808 * difficult for userspace to differentiate, since machine drivers ususally
1809 * use their own name as the card short name and leave the card long name
1810 * blank. To differentiate such devices and fix bugs due to lack of
1811 * device-specific configurations, this function allows DMI info to be used
1812 * as the sound card long name, in the format of
1813 * "vendor-product-version-board"
1814 * (Character '-' is used to separate different DMI fields here).
1815 * This will help the user space to load the device-specific Use Case Manager
1816 * (UCM) configurations for the card.
1818 * Possible card long names may be:
1819 * DellInc.-XPS139343-01-0310JH
1820 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
1821 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
1823 * This function also supports flavoring the card longname to provide
1824 * the extra differentiation, like "vendor-product-version-board-flavor".
1826 * We only keep number and alphabet characters and a few separator characters
1827 * in the card long name since UCM in the user space uses the card long names
1828 * as card configuration directory names and AudoConf cannot support special
1829 * charactors like SPACE.
1831 * Returns 0 on success, otherwise a negative error code.
1833 int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
1835 const char *vendor, *product, *product_version, *board;
1836 size_t longname_buf_size = sizeof(card->snd_card->longname);
1839 if (card->long_name)
1840 return 0; /* long name already set by driver or from DMI */
1842 /* make up dmi long name as: vendor.product.version.board */
1843 vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1844 if (!vendor || !is_dmi_valid(vendor)) {
1845 dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
1850 snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
1852 cleanup_dmi_name(card->dmi_longname);
1854 product = dmi_get_system_info(DMI_PRODUCT_NAME);
1855 if (product && is_dmi_valid(product)) {
1856 len = strlen(card->dmi_longname);
1857 snprintf(card->dmi_longname + len,
1858 longname_buf_size - len,
1861 len++; /* skip the separator "-" */
1862 if (len < longname_buf_size)
1863 cleanup_dmi_name(card->dmi_longname + len);
1865 /* some vendors like Lenovo may only put a self-explanatory
1866 * name in the product version field
1868 product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
1869 if (product_version && is_dmi_valid(product_version)) {
1870 len = strlen(card->dmi_longname);
1871 snprintf(card->dmi_longname + len,
1872 longname_buf_size - len,
1873 "-%s", product_version);
1876 if (len < longname_buf_size)
1877 cleanup_dmi_name(card->dmi_longname + len);
1881 board = dmi_get_system_info(DMI_BOARD_NAME);
1882 if (board && is_dmi_valid(board)) {
1883 len = strlen(card->dmi_longname);
1884 snprintf(card->dmi_longname + len,
1885 longname_buf_size - len,
1889 if (len < longname_buf_size)
1890 cleanup_dmi_name(card->dmi_longname + len);
1891 } else if (!product) {
1892 /* fall back to using legacy name */
1893 dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
1897 /* Add flavour to dmi long name */
1899 len = strlen(card->dmi_longname);
1900 snprintf(card->dmi_longname + len,
1901 longname_buf_size - len,
1905 if (len < longname_buf_size)
1906 cleanup_dmi_name(card->dmi_longname + len);
1909 /* set the card long name */
1910 card->long_name = card->dmi_longname;
1914 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name);
1915 #endif /* CONFIG_DMI */
1917 static void soc_check_tplg_fes(struct snd_soc_card *card)
1919 struct snd_soc_component *component;
1920 const struct snd_soc_component_driver *comp_drv;
1921 struct snd_soc_dai_link *dai_link;
1924 list_for_each_entry(component, &component_list, list) {
1926 /* does this component override FEs ? */
1927 if (!component->driver->ignore_machine)
1930 /* for this machine ? */
1931 if (strcmp(component->driver->ignore_machine,
1932 card->dev->driver->name))
1935 /* machine matches, so override the rtd data */
1936 for (i = 0; i < card->num_links; i++) {
1938 dai_link = &card->dai_link[i];
1940 /* ignore this FE */
1941 if (dai_link->dynamic) {
1942 dai_link->ignore = true;
1946 dev_info(card->dev, "info: override FE DAI link %s\n",
1947 card->dai_link[i].name);
1949 /* override platform component */
1950 if (snd_soc_init_platform(card, dai_link) < 0) {
1951 dev_err(card->dev, "init platform error");
1954 dai_link->platform->name = component->name;
1956 /* convert non BE into BE */
1957 dai_link->no_pcm = 1;
1959 /* override any BE fixups */
1960 dai_link->be_hw_params_fixup =
1961 component->driver->be_hw_params_fixup;
1963 /* most BE links don't set stream name, so set it to
1964 * dai link name if it's NULL to help bind widgets.
1966 if (!dai_link->stream_name)
1967 dai_link->stream_name = dai_link->name;
1970 /* Inform userspace we are using alternate topology */
1971 if (component->driver->topology_name_prefix) {
1973 /* topology shortname created ? */
1974 if (!card->topology_shortname_created) {
1975 comp_drv = component->driver;
1977 snprintf(card->topology_shortname, 32, "%s-%s",
1978 comp_drv->topology_name_prefix,
1980 card->topology_shortname_created = true;
1983 /* use topology shortname */
1984 card->name = card->topology_shortname;
1989 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1991 struct snd_soc_pcm_runtime *rtd;
1992 struct snd_soc_dai_link *dai_link;
1995 mutex_lock(&client_mutex);
1996 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1998 /* check whether any platform is ignore machine FE and using topology */
1999 soc_check_tplg_fes(card);
2002 for (i = 0; i < card->num_links; i++) {
2003 ret = soc_bind_dai_link(card, &card->dai_link[i]);
2008 /* bind aux_devs too */
2009 for (i = 0; i < card->num_aux_devs; i++) {
2010 ret = soc_bind_aux_dev(card, i);
2015 /* add predefined DAI links to the list */
2016 for (i = 0; i < card->num_links; i++)
2017 snd_soc_add_dai_link(card, card->dai_link+i);
2019 /* card bind complete so register a sound card */
2020 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
2021 card->owner, 0, &card->snd_card);
2024 "ASoC: can't create sound card for card %s: %d\n",
2029 soc_init_card_debugfs(card);
2031 card->dapm.bias_level = SND_SOC_BIAS_OFF;
2032 card->dapm.dev = card->dev;
2033 card->dapm.card = card;
2034 list_add(&card->dapm.list, &card->dapm_list);
2036 #ifdef CONFIG_DEBUG_FS
2037 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
2040 #ifdef CONFIG_PM_SLEEP
2041 /* deferred resume work */
2042 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
2045 if (card->dapm_widgets)
2046 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
2047 card->num_dapm_widgets);
2049 if (card->of_dapm_widgets)
2050 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
2051 card->num_of_dapm_widgets);
2053 /* initialise the sound card only once */
2055 ret = card->probe(card);
2057 goto card_probe_error;
2060 /* probe all components used by DAI links on this card */
2061 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2063 list_for_each_entry(rtd, &card->rtd_list, list) {
2064 ret = soc_probe_link_components(card, rtd, order);
2067 "ASoC: failed to instantiate card %d\n",
2074 /* probe auxiliary components */
2075 ret = soc_probe_aux_devices(card);
2079 /* Find new DAI links added during probing components and bind them.
2080 * Components with topology may bring new DAIs and DAI links.
2082 list_for_each_entry(dai_link, &card->dai_link_list, list) {
2083 if (soc_is_dai_link_bound(card, dai_link))
2086 ret = soc_init_dai_link(card, dai_link);
2089 ret = soc_bind_dai_link(card, dai_link);
2094 /* probe all DAI links on this card */
2095 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2097 list_for_each_entry(rtd, &card->rtd_list, list) {
2098 ret = soc_probe_link_dais(card, rtd, order);
2101 "ASoC: failed to instantiate card %d\n",
2108 snd_soc_dapm_link_dai_widgets(card);
2109 snd_soc_dapm_connect_dai_link_widgets(card);
2112 snd_soc_add_card_controls(card, card->controls, card->num_controls);
2114 if (card->dapm_routes)
2115 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
2116 card->num_dapm_routes);
2118 if (card->of_dapm_routes)
2119 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
2120 card->num_of_dapm_routes);
2122 /* try to set some sane longname if DMI is available */
2123 snd_soc_set_dmi_name(card, NULL);
2125 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
2127 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
2128 "%s", card->long_name ? card->long_name : card->name);
2129 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
2130 "%s", card->driver_name ? card->driver_name : card->name);
2131 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
2132 switch (card->snd_card->driver[i]) {
2138 if (!isalnum(card->snd_card->driver[i]))
2139 card->snd_card->driver[i] = '_';
2144 if (card->late_probe) {
2145 ret = card->late_probe(card);
2147 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2149 goto probe_aux_dev_err;
2153 snd_soc_dapm_new_widgets(card);
2155 ret = snd_card_register(card->snd_card);
2157 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2159 goto probe_aux_dev_err;
2162 card->instantiated = 1;
2163 snd_soc_dapm_sync(&card->dapm);
2164 mutex_unlock(&card->mutex);
2165 mutex_unlock(&client_mutex);
2170 soc_remove_aux_devices(card);
2173 soc_remove_dai_links(card);
2179 snd_soc_dapm_free(&card->dapm);
2180 soc_cleanup_card_debugfs(card);
2181 snd_card_free(card->snd_card);
2184 soc_remove_pcm_runtimes(card);
2185 mutex_unlock(&card->mutex);
2186 mutex_unlock(&client_mutex);
2191 /* probes a new socdev */
2192 static int soc_probe(struct platform_device *pdev)
2194 struct snd_soc_card *card = platform_get_drvdata(pdev);
2197 * no card, so machine driver should be registering card
2198 * we should not be here in that case so ret error
2203 dev_warn(&pdev->dev,
2204 "ASoC: machine %s should use snd_soc_register_card()\n",
2207 /* Bodge while we unpick instantiation */
2208 card->dev = &pdev->dev;
2210 return snd_soc_register_card(card);
2213 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2215 struct snd_soc_pcm_runtime *rtd;
2217 /* make sure any delayed work runs */
2218 list_for_each_entry(rtd, &card->rtd_list, list)
2219 flush_delayed_work(&rtd->delayed_work);
2221 /* free the ALSA card at first; this syncs with pending operations */
2222 snd_card_free(card->snd_card);
2224 /* remove and free each DAI */
2225 soc_remove_dai_links(card);
2226 soc_remove_pcm_runtimes(card);
2228 /* remove auxiliary devices */
2229 soc_remove_aux_devices(card);
2231 snd_soc_dapm_free(&card->dapm);
2232 soc_cleanup_card_debugfs(card);
2234 /* remove the card */
2241 /* removes a socdev */
2242 static int soc_remove(struct platform_device *pdev)
2244 struct snd_soc_card *card = platform_get_drvdata(pdev);
2246 snd_soc_unregister_card(card);
2250 int snd_soc_poweroff(struct device *dev)
2252 struct snd_soc_card *card = dev_get_drvdata(dev);
2253 struct snd_soc_pcm_runtime *rtd;
2255 if (!card->instantiated)
2258 /* Flush out pmdown_time work - we actually do want to run it
2259 * now, we're shutting down so no imminent restart. */
2260 list_for_each_entry(rtd, &card->rtd_list, list)
2261 flush_delayed_work(&rtd->delayed_work);
2263 snd_soc_dapm_shutdown(card);
2265 /* deactivate pins to sleep state */
2266 list_for_each_entry(rtd, &card->rtd_list, list) {
2267 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2270 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2271 for (i = 0; i < rtd->num_codecs; i++) {
2272 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
2273 pinctrl_pm_select_sleep_state(codec_dai->dev);
2279 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2281 const struct dev_pm_ops snd_soc_pm_ops = {
2282 .suspend = snd_soc_suspend,
2283 .resume = snd_soc_resume,
2284 .freeze = snd_soc_suspend,
2285 .thaw = snd_soc_resume,
2286 .poweroff = snd_soc_poweroff,
2287 .restore = snd_soc_resume,
2289 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2291 /* ASoC platform driver */
2292 static struct platform_driver soc_driver = {
2294 .name = "soc-audio",
2295 .pm = &snd_soc_pm_ops,
2298 .remove = soc_remove,
2302 * snd_soc_cnew - create new control
2303 * @_template: control template
2304 * @data: control private data
2305 * @long_name: control long name
2306 * @prefix: control name prefix
2308 * Create a new mixer control from a template control.
2310 * Returns 0 for success, else error.
2312 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2313 void *data, const char *long_name,
2316 struct snd_kcontrol_new template;
2317 struct snd_kcontrol *kcontrol;
2320 memcpy(&template, _template, sizeof(template));
2324 long_name = template.name;
2327 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2331 template.name = name;
2333 template.name = long_name;
2336 kcontrol = snd_ctl_new1(&template, data);
2342 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2344 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2345 const struct snd_kcontrol_new *controls, int num_controls,
2346 const char *prefix, void *data)
2350 for (i = 0; i < num_controls; i++) {
2351 const struct snd_kcontrol_new *control = &controls[i];
2352 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2353 control->name, prefix));
2355 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2356 control->name, err);
2364 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2367 struct snd_card *card = soc_card->snd_card;
2368 struct snd_kcontrol *kctl;
2370 if (unlikely(!name))
2373 list_for_each_entry(kctl, &card->controls, list)
2374 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2378 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2381 * snd_soc_add_component_controls - Add an array of controls to a component.
2383 * @component: Component to add controls to
2384 * @controls: Array of controls to add
2385 * @num_controls: Number of elements in the array
2387 * Return: 0 for success, else error.
2389 int snd_soc_add_component_controls(struct snd_soc_component *component,
2390 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2392 struct snd_card *card = component->card->snd_card;
2394 return snd_soc_add_controls(card, component->dev, controls,
2395 num_controls, component->name_prefix, component);
2397 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2400 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2401 * Convenience function to add a list of controls.
2403 * @soc_card: SoC card to add controls to
2404 * @controls: array of controls to add
2405 * @num_controls: number of elements in the array
2407 * Return 0 for success, else error.
2409 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2410 const struct snd_kcontrol_new *controls, int num_controls)
2412 struct snd_card *card = soc_card->snd_card;
2414 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2417 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2420 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2421 * Convienience function to add a list of controls.
2423 * @dai: DAI to add controls to
2424 * @controls: array of controls to add
2425 * @num_controls: number of elements in the array
2427 * Return 0 for success, else error.
2429 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2430 const struct snd_kcontrol_new *controls, int num_controls)
2432 struct snd_card *card = dai->component->card->snd_card;
2434 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2437 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2440 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2442 * @clk_id: DAI specific clock ID
2443 * @freq: new clock frequency in Hz
2444 * @dir: new clock direction - input/output.
2446 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2448 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2449 unsigned int freq, int dir)
2451 if (dai->driver->ops->set_sysclk)
2452 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2454 return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
2457 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2460 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2461 * @component: COMPONENT
2462 * @clk_id: DAI specific clock ID
2463 * @source: Source for the clock
2464 * @freq: new clock frequency in Hz
2465 * @dir: new clock direction - input/output.
2467 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2469 int snd_soc_component_set_sysclk(struct snd_soc_component *component, int clk_id,
2470 int source, unsigned int freq, int dir)
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 == NULL)
2571 if (dai->driver->ops->set_fmt == NULL)
2573 return dai->driver->ops->set_fmt(dai, fmt);
2575 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2578 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2579 * @slots: Number of slots in use.
2580 * @tx_mask: bitmask representing active TX slots.
2581 * @rx_mask: bitmask representing active RX slots.
2583 * Generates the TDM tx and rx slot default masks for DAI.
2585 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2586 unsigned int *tx_mask,
2587 unsigned int *rx_mask)
2589 if (*tx_mask || *rx_mask)
2595 *tx_mask = (1 << slots) - 1;
2596 *rx_mask = (1 << slots) - 1;
2602 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2603 * @dai: The DAI to configure
2604 * @tx_mask: bitmask representing active TX slots.
2605 * @rx_mask: bitmask representing active RX slots.
2606 * @slots: Number of slots in use.
2607 * @slot_width: Width in bits for each slot.
2609 * This function configures the specified DAI for TDM operation. @slot contains
2610 * the total number of slots of the TDM stream and @slot_with the width of each
2611 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2612 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2613 * DAI should write to or read from. If a bit is set the corresponding slot is
2614 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2615 * the first slot, bit 1 to the second slot and so on. The first active slot
2616 * maps to the first channel of the DAI, the second active slot to the second
2617 * channel and so on.
2619 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2620 * @rx_mask and @slot_width will be ignored.
2622 * Returns 0 on success, a negative error code otherwise.
2624 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2625 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2627 if (dai->driver->ops->xlate_tdm_slot_mask)
2628 dai->driver->ops->xlate_tdm_slot_mask(slots,
2629 &tx_mask, &rx_mask);
2631 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2633 dai->tx_mask = tx_mask;
2634 dai->rx_mask = rx_mask;
2636 if (dai->driver->ops->set_tdm_slot)
2637 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2642 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2645 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2647 * @tx_num: how many TX channels
2648 * @tx_slot: pointer to an array which imply the TX slot number channel
2650 * @rx_num: how many RX channels
2651 * @rx_slot: pointer to an array which imply the RX slot number channel
2654 * configure the relationship between channel number and TDM slot number.
2656 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2657 unsigned int tx_num, unsigned int *tx_slot,
2658 unsigned int rx_num, unsigned int *rx_slot)
2660 if (dai->driver->ops->set_channel_map)
2661 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2666 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2669 * snd_soc_dai_get_channel_map - Get DAI audio channel map
2671 * @tx_num: how many TX channels
2672 * @tx_slot: pointer to an array which imply the TX slot number channel
2674 * @rx_num: how many RX channels
2675 * @rx_slot: pointer to an array which imply the RX slot number channel
2678 int snd_soc_dai_get_channel_map(struct snd_soc_dai *dai,
2679 unsigned int *tx_num, unsigned int *tx_slot,
2680 unsigned int *rx_num, unsigned int *rx_slot)
2682 if (dai->driver->ops->get_channel_map)
2683 return dai->driver->ops->get_channel_map(dai, tx_num, tx_slot,
2688 EXPORT_SYMBOL_GPL(snd_soc_dai_get_channel_map);
2691 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2693 * @tristate: tristate enable
2695 * Tristates the DAI so that others can use it.
2697 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2699 if (dai->driver->ops->set_tristate)
2700 return dai->driver->ops->set_tristate(dai, tristate);
2704 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2707 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2709 * @mute: mute enable
2710 * @direction: stream to mute
2712 * Mutes the DAI DAC.
2714 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2720 if (dai->driver->ops->mute_stream)
2721 return dai->driver->ops->mute_stream(dai, mute, direction);
2722 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2723 dai->driver->ops->digital_mute)
2724 return dai->driver->ops->digital_mute(dai, mute);
2728 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2731 * snd_soc_register_card - Register a card with the ASoC core
2733 * @card: Card to register
2736 int snd_soc_register_card(struct snd_soc_card *card)
2739 struct snd_soc_pcm_runtime *rtd;
2741 if (!card->name || !card->dev)
2744 for (i = 0; i < card->num_links; i++) {
2745 struct snd_soc_dai_link *link = &card->dai_link[i];
2747 ret = soc_init_dai_link(card, link);
2749 dev_err(card->dev, "ASoC: failed to init link %s\n",
2755 dev_set_drvdata(card->dev, card);
2757 snd_soc_initialize_card_lists(card);
2759 INIT_LIST_HEAD(&card->dai_link_list);
2760 card->num_dai_links = 0;
2762 INIT_LIST_HEAD(&card->rtd_list);
2765 INIT_LIST_HEAD(&card->dapm_dirty);
2766 INIT_LIST_HEAD(&card->dobj_list);
2767 card->instantiated = 0;
2768 mutex_init(&card->mutex);
2769 mutex_init(&card->dapm_mutex);
2771 ret = snd_soc_instantiate_card(card);
2775 /* deactivate pins to sleep state */
2776 list_for_each_entry(rtd, &card->rtd_list, list) {
2777 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2780 for (j = 0; j < rtd->num_codecs; j++) {
2781 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
2782 if (!codec_dai->active)
2783 pinctrl_pm_select_sleep_state(codec_dai->dev);
2786 if (!cpu_dai->active)
2787 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2792 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2795 * snd_soc_unregister_card - Unregister a card with the ASoC core
2797 * @card: Card to unregister
2800 int snd_soc_unregister_card(struct snd_soc_card *card)
2802 if (card->instantiated) {
2803 card->instantiated = false;
2804 snd_soc_dapm_shutdown(card);
2805 soc_cleanup_card_resources(card);
2806 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
2811 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2814 * Simplify DAI link configuration by removing ".-1" from device names
2815 * and sanitizing names.
2817 static char *fmt_single_name(struct device *dev, int *id)
2819 char *found, name[NAME_SIZE];
2822 if (dev_name(dev) == NULL)
2825 strlcpy(name, dev_name(dev), NAME_SIZE);
2827 /* are we a "%s.%d" name (platform and SPI components) */
2828 found = strstr(name, dev->driver->name);
2831 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2833 /* discard ID from name if ID == -1 */
2835 found[strlen(dev->driver->name)] = '\0';
2839 /* I2C component devices are named "bus-addr" */
2840 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2841 char tmp[NAME_SIZE];
2843 /* create unique ID number from I2C addr and bus */
2844 *id = ((id1 & 0xffff) << 16) + id2;
2846 /* sanitize component name for DAI link creation */
2847 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
2848 strlcpy(name, tmp, NAME_SIZE);
2853 return kstrdup(name, GFP_KERNEL);
2857 * Simplify DAI link naming for single devices with multiple DAIs by removing
2858 * any ".-1" and using the DAI name (instead of device name).
2860 static inline char *fmt_multiple_name(struct device *dev,
2861 struct snd_soc_dai_driver *dai_drv)
2863 if (dai_drv->name == NULL) {
2865 "ASoC: error - multiple DAI %s registered with no name\n",
2870 return kstrdup(dai_drv->name, GFP_KERNEL);
2874 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2876 * @component: The component for which the DAIs should be unregistered
2878 static void snd_soc_unregister_dais(struct snd_soc_component *component)
2880 struct snd_soc_dai *dai, *_dai;
2882 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
2883 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
2885 list_del(&dai->list);
2891 /* Create a DAI and add it to the component's DAI list */
2892 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
2893 struct snd_soc_dai_driver *dai_drv,
2894 bool legacy_dai_naming)
2896 struct device *dev = component->dev;
2897 struct snd_soc_dai *dai;
2899 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
2901 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2906 * Back in the old days when we still had component-less DAIs,
2907 * instead of having a static name, component-less DAIs would
2908 * inherit the name of the parent device so it is possible to
2909 * register multiple instances of the DAI. We still need to keep
2910 * the same naming style even though those DAIs are not
2911 * component-less anymore.
2913 if (legacy_dai_naming &&
2914 (dai_drv->id == 0 || dai_drv->name == NULL)) {
2915 dai->name = fmt_single_name(dev, &dai->id);
2917 dai->name = fmt_multiple_name(dev, dai_drv);
2919 dai->id = dai_drv->id;
2921 dai->id = component->num_dai;
2923 if (dai->name == NULL) {
2928 dai->component = component;
2930 dai->driver = dai_drv;
2931 if (!dai->driver->ops)
2932 dai->driver->ops = &null_dai_ops;
2934 list_add_tail(&dai->list, &component->dai_list);
2935 component->num_dai++;
2937 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
2942 * snd_soc_register_dais - Register a DAI with the ASoC core
2944 * @component: The component the DAIs are registered for
2945 * @dai_drv: DAI driver to use for the DAIs
2946 * @count: Number of DAIs
2948 static int snd_soc_register_dais(struct snd_soc_component *component,
2949 struct snd_soc_dai_driver *dai_drv, size_t count)
2951 struct device *dev = component->dev;
2952 struct snd_soc_dai *dai;
2956 dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count);
2958 for (i = 0; i < count; i++) {
2960 dai = soc_add_dai(component, dai_drv + i,
2961 count == 1 && !component->driver->non_legacy_dai_naming);
2971 snd_soc_unregister_dais(component);
2977 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
2979 * @component: The component the DAIs are registered for
2980 * @dai_drv: DAI driver to use for the DAI
2982 * Topology can use this API to register DAIs when probing a component.
2983 * These DAIs's widgets will be freed in the card cleanup and the DAIs
2984 * will be freed in the component cleanup.
2986 int snd_soc_register_dai(struct snd_soc_component *component,
2987 struct snd_soc_dai_driver *dai_drv)
2989 struct snd_soc_dapm_context *dapm =
2990 snd_soc_component_get_dapm(component);
2991 struct snd_soc_dai *dai;
2994 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
2995 dev_err(component->dev, "Invalid dai type %d\n",
2996 dai_drv->dobj.type);
3000 lockdep_assert_held(&client_mutex);
3001 dai = soc_add_dai(component, dai_drv, false);
3005 /* Create the DAI widgets here. After adding DAIs, topology may
3006 * also add routes that need these widgets as source or sink.
3008 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
3010 dev_err(component->dev,
3011 "Failed to create DAI widgets %d\n", ret);
3016 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3018 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
3019 enum snd_soc_dapm_type type, int subseq)
3021 struct snd_soc_component *component = dapm->component;
3023 component->driver->seq_notifier(component, type, subseq);
3026 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
3029 struct snd_soc_component *component = dapm->component;
3031 return component->driver->stream_event(component, event);
3034 static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context *dapm,
3035 enum snd_soc_bias_level level)
3037 struct snd_soc_component *component = dapm->component;
3039 return component->driver->set_bias_level(component, level);
3042 static int snd_soc_component_initialize(struct snd_soc_component *component,
3043 const struct snd_soc_component_driver *driver, struct device *dev)
3045 struct snd_soc_dapm_context *dapm;
3047 component->name = fmt_single_name(dev, &component->id);
3048 if (!component->name) {
3049 dev_err(dev, "ASoC: Failed to allocate name\n");
3053 component->dev = dev;
3054 component->driver = driver;
3056 dapm = snd_soc_component_get_dapm(component);
3058 dapm->component = component;
3059 dapm->bias_level = SND_SOC_BIAS_OFF;
3060 dapm->idle_bias_off = !driver->idle_bias_on;
3061 dapm->suspend_bias_off = driver->suspend_bias_off;
3062 if (driver->seq_notifier)
3063 dapm->seq_notifier = snd_soc_component_seq_notifier;
3064 if (driver->stream_event)
3065 dapm->stream_event = snd_soc_component_stream_event;
3066 if (driver->set_bias_level)
3067 dapm->set_bias_level = snd_soc_component_set_bias_level;
3069 INIT_LIST_HEAD(&component->dai_list);
3070 mutex_init(&component->io_mutex);
3075 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
3077 int val_bytes = regmap_get_val_bytes(component->regmap);
3079 /* Errors are legitimate for non-integer byte multiples */
3081 component->val_bytes = val_bytes;
3084 #ifdef CONFIG_REGMAP
3087 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3088 * @component: The component for which to initialize the regmap instance
3089 * @regmap: The regmap instance that should be used by the component
3091 * This function allows deferred assignment of the regmap instance that is
3092 * associated with the component. Only use this if the regmap instance is not
3093 * yet ready when the component is registered. The function must also be called
3094 * before the first IO attempt of the component.
3096 void snd_soc_component_init_regmap(struct snd_soc_component *component,
3097 struct regmap *regmap)
3099 component->regmap = regmap;
3100 snd_soc_component_setup_regmap(component);
3102 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
3105 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3106 * @component: The component for which to de-initialize the regmap instance
3108 * Calls regmap_exit() on the regmap instance associated to the component and
3109 * removes the regmap instance from the component.
3111 * This function should only be used if snd_soc_component_init_regmap() was used
3112 * to initialize the regmap instance.
3114 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
3116 regmap_exit(component->regmap);
3117 component->regmap = NULL;
3119 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3123 static void snd_soc_component_add(struct snd_soc_component *component)
3125 mutex_lock(&client_mutex);
3127 if (!component->driver->write && !component->driver->read) {
3128 if (!component->regmap)
3129 component->regmap = dev_get_regmap(component->dev, NULL);
3130 if (component->regmap)
3131 snd_soc_component_setup_regmap(component);
3134 list_add(&component->list, &component_list);
3135 INIT_LIST_HEAD(&component->dobj_list);
3137 mutex_unlock(&client_mutex);
3140 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3142 snd_soc_unregister_dais(component);
3143 kfree(component->name);
3146 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3148 struct snd_soc_card *card = component->card;
3151 snd_soc_unregister_card(card);
3153 list_del(&component->list);
3156 #define ENDIANNESS_MAP(name) \
3157 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
3158 static u64 endianness_format_map[] = {
3159 ENDIANNESS_MAP(S16_),
3160 ENDIANNESS_MAP(U16_),
3161 ENDIANNESS_MAP(S24_),
3162 ENDIANNESS_MAP(U24_),
3163 ENDIANNESS_MAP(S32_),
3164 ENDIANNESS_MAP(U32_),
3165 ENDIANNESS_MAP(S24_3),
3166 ENDIANNESS_MAP(U24_3),
3167 ENDIANNESS_MAP(S20_3),
3168 ENDIANNESS_MAP(U20_3),
3169 ENDIANNESS_MAP(S18_3),
3170 ENDIANNESS_MAP(U18_3),
3171 ENDIANNESS_MAP(FLOAT_),
3172 ENDIANNESS_MAP(FLOAT64_),
3173 ENDIANNESS_MAP(IEC958_SUBFRAME_),
3177 * Fix up the DAI formats for endianness: codecs don't actually see
3178 * the endianness of the data but we're using the CPU format
3179 * definitions which do need to include endianness so we ensure that
3180 * codec DAIs always have both big and little endian variants set.
3182 static void convert_endianness_formats(struct snd_soc_pcm_stream *stream)
3186 for (i = 0; i < ARRAY_SIZE(endianness_format_map); i++)
3187 if (stream->formats & endianness_format_map[i])
3188 stream->formats |= endianness_format_map[i];
3191 int snd_soc_add_component(struct device *dev,
3192 struct snd_soc_component *component,
3193 const struct snd_soc_component_driver *component_driver,
3194 struct snd_soc_dai_driver *dai_drv,
3200 ret = snd_soc_component_initialize(component, component_driver, dev);
3204 if (component_driver->endianness) {
3205 for (i = 0; i < num_dai; i++) {
3206 convert_endianness_formats(&dai_drv[i].playback);
3207 convert_endianness_formats(&dai_drv[i].capture);
3211 ret = snd_soc_register_dais(component, dai_drv, num_dai);
3213 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3217 snd_soc_component_add(component);
3222 snd_soc_component_cleanup(component);
3226 EXPORT_SYMBOL_GPL(snd_soc_add_component);
3228 int snd_soc_register_component(struct device *dev,
3229 const struct snd_soc_component_driver *component_driver,
3230 struct snd_soc_dai_driver *dai_drv,
3233 struct snd_soc_component *component;
3235 component = devm_kzalloc(dev, sizeof(*component), GFP_KERNEL);
3239 return snd_soc_add_component(dev, component, component_driver,
3242 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3245 * snd_soc_unregister_component - Unregister all related component
3246 * from the ASoC core
3248 * @dev: The device to unregister
3250 static int __snd_soc_unregister_component(struct device *dev)
3252 struct snd_soc_component *component;
3255 mutex_lock(&client_mutex);
3256 list_for_each_entry(component, &component_list, list) {
3257 if (dev != component->dev)
3260 snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL);
3261 snd_soc_component_del_unlocked(component);
3265 mutex_unlock(&client_mutex);
3268 snd_soc_component_cleanup(component);
3274 void snd_soc_unregister_component(struct device *dev)
3276 while (__snd_soc_unregister_component(dev));
3278 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3280 struct snd_soc_component *snd_soc_lookup_component(struct device *dev,
3281 const char *driver_name)
3283 struct snd_soc_component *component;
3284 struct snd_soc_component *ret;
3287 mutex_lock(&client_mutex);
3288 list_for_each_entry(component, &component_list, list) {
3289 if (dev != component->dev)
3293 (driver_name != component->driver->name) &&
3294 (strcmp(component->driver->name, driver_name) != 0))
3300 mutex_unlock(&client_mutex);
3304 EXPORT_SYMBOL_GPL(snd_soc_lookup_component);
3306 /* Retrieve a card's name from device tree */
3307 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3308 const char *propname)
3310 struct device_node *np;
3314 pr_err("card->dev is not set before calling %s\n", __func__);
3318 np = card->dev->of_node;
3320 ret = of_property_read_string_index(np, propname, 0, &card->name);
3322 * EINVAL means the property does not exist. This is fine providing
3323 * card->name was previously set, which is checked later in
3324 * snd_soc_register_card.
3326 if (ret < 0 && ret != -EINVAL) {
3328 "ASoC: Property '%s' could not be read: %d\n",
3335 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3337 static const struct snd_soc_dapm_widget simple_widgets[] = {
3338 SND_SOC_DAPM_MIC("Microphone", NULL),
3339 SND_SOC_DAPM_LINE("Line", NULL),
3340 SND_SOC_DAPM_HP("Headphone", NULL),
3341 SND_SOC_DAPM_SPK("Speaker", NULL),
3344 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3345 const char *propname)
3347 struct device_node *np = card->dev->of_node;
3348 struct snd_soc_dapm_widget *widgets;
3349 const char *template, *wname;
3350 int i, j, num_widgets, ret;
3352 num_widgets = of_property_count_strings(np, propname);
3353 if (num_widgets < 0) {
3355 "ASoC: Property '%s' does not exist\n", propname);
3358 if (num_widgets & 1) {
3360 "ASoC: Property '%s' length is not even\n", propname);
3366 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3371 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
3375 "ASoC: Could not allocate memory for widgets\n");
3379 for (i = 0; i < num_widgets; i++) {
3380 ret = of_property_read_string_index(np, propname,
3384 "ASoC: Property '%s' index %d read error:%d\n",
3385 propname, 2 * i, ret);
3389 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
3390 if (!strncmp(template, simple_widgets[j].name,
3391 strlen(simple_widgets[j].name))) {
3392 widgets[i] = simple_widgets[j];
3397 if (j >= ARRAY_SIZE(simple_widgets)) {
3399 "ASoC: DAPM widget '%s' is not supported\n",
3404 ret = of_property_read_string_index(np, propname,
3409 "ASoC: Property '%s' index %d read error:%d\n",
3410 propname, (2 * i) + 1, ret);
3414 widgets[i].name = wname;
3417 card->of_dapm_widgets = widgets;
3418 card->num_of_dapm_widgets = num_widgets;
3422 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
3424 int snd_soc_of_get_slot_mask(struct device_node *np,
3425 const char *prop_name,
3429 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
3435 for (i = 0; i < val; i++)
3436 if (be32_to_cpup(&of_slot_mask[i]))
3441 EXPORT_SYMBOL_GPL(snd_soc_of_get_slot_mask);
3443 int snd_soc_of_parse_tdm_slot(struct device_node *np,
3444 unsigned int *tx_mask,
3445 unsigned int *rx_mask,
3446 unsigned int *slots,
3447 unsigned int *slot_width)
3453 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
3455 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
3457 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
3458 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
3466 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
3467 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
3477 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
3479 void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card,
3480 struct snd_soc_codec_conf *codec_conf,
3481 struct device_node *of_node,
3482 const char *propname)
3484 struct device_node *np = card->dev->of_node;
3488 ret = of_property_read_string(np, propname, &str);
3490 /* no prefix is not error */
3494 codec_conf->of_node = of_node;
3495 codec_conf->name_prefix = str;
3497 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix);
3499 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3500 const char *propname)
3502 struct device_node *np = card->dev->of_node;
3504 struct snd_soc_dapm_route *routes;
3507 num_routes = of_property_count_strings(np, propname);
3508 if (num_routes < 0 || num_routes & 1) {
3510 "ASoC: Property '%s' does not exist or its length is not even\n",
3516 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3521 routes = devm_kcalloc(card->dev, num_routes, sizeof(*routes),
3525 "ASoC: Could not allocate DAPM route table\n");
3529 for (i = 0; i < num_routes; i++) {
3530 ret = of_property_read_string_index(np, propname,
3531 2 * i, &routes[i].sink);
3534 "ASoC: Property '%s' index %d could not be read: %d\n",
3535 propname, 2 * i, ret);
3538 ret = of_property_read_string_index(np, propname,
3539 (2 * i) + 1, &routes[i].source);
3542 "ASoC: Property '%s' index %d could not be read: %d\n",
3543 propname, (2 * i) + 1, ret);
3548 card->num_of_dapm_routes = num_routes;
3549 card->of_dapm_routes = routes;
3553 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3555 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
3557 struct device_node **bitclkmaster,
3558 struct device_node **framemaster)
3562 unsigned int format = 0;
3568 } of_fmt_table[] = {
3569 { "i2s", SND_SOC_DAIFMT_I2S },
3570 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
3571 { "left_j", SND_SOC_DAIFMT_LEFT_J },
3572 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
3573 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
3574 { "ac97", SND_SOC_DAIFMT_AC97 },
3575 { "pdm", SND_SOC_DAIFMT_PDM},
3576 { "msb", SND_SOC_DAIFMT_MSB },
3577 { "lsb", SND_SOC_DAIFMT_LSB },
3584 * check "dai-format = xxx"
3585 * or "[prefix]format = xxx"
3586 * SND_SOC_DAIFMT_FORMAT_MASK area
3588 ret = of_property_read_string(np, "dai-format", &str);
3590 snprintf(prop, sizeof(prop), "%sformat", prefix);
3591 ret = of_property_read_string(np, prop, &str);
3594 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
3595 if (strcmp(str, of_fmt_table[i].name) == 0) {
3596 format |= of_fmt_table[i].val;
3603 * check "[prefix]continuous-clock"
3604 * SND_SOC_DAIFMT_CLOCK_MASK area
3606 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
3607 if (of_property_read_bool(np, prop))
3608 format |= SND_SOC_DAIFMT_CONT;
3610 format |= SND_SOC_DAIFMT_GATED;
3613 * check "[prefix]bitclock-inversion"
3614 * check "[prefix]frame-inversion"
3615 * SND_SOC_DAIFMT_INV_MASK area
3617 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
3618 bit = !!of_get_property(np, prop, NULL);
3620 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
3621 frame = !!of_get_property(np, prop, NULL);
3623 switch ((bit << 4) + frame) {
3625 format |= SND_SOC_DAIFMT_IB_IF;
3628 format |= SND_SOC_DAIFMT_IB_NF;
3631 format |= SND_SOC_DAIFMT_NB_IF;
3634 /* SND_SOC_DAIFMT_NB_NF is default */
3639 * check "[prefix]bitclock-master"
3640 * check "[prefix]frame-master"
3641 * SND_SOC_DAIFMT_MASTER_MASK area
3643 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
3644 bit = !!of_get_property(np, prop, NULL);
3645 if (bit && bitclkmaster)
3646 *bitclkmaster = of_parse_phandle(np, prop, 0);
3648 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
3649 frame = !!of_get_property(np, prop, NULL);
3650 if (frame && framemaster)
3651 *framemaster = of_parse_phandle(np, prop, 0);
3653 switch ((bit << 4) + frame) {
3655 format |= SND_SOC_DAIFMT_CBM_CFM;
3658 format |= SND_SOC_DAIFMT_CBM_CFS;
3661 format |= SND_SOC_DAIFMT_CBS_CFM;
3664 format |= SND_SOC_DAIFMT_CBS_CFS;
3670 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
3672 int snd_soc_get_dai_id(struct device_node *ep)
3674 struct snd_soc_component *pos;
3675 struct device_node *node;
3678 node = of_graph_get_port_parent(ep);
3681 * For example HDMI case, HDMI has video/sound port,
3682 * but ALSA SoC needs sound port number only.
3683 * Thus counting HDMI DT port/endpoint doesn't work.
3684 * Then, it should have .of_xlate_dai_id
3687 mutex_lock(&client_mutex);
3688 list_for_each_entry(pos, &component_list, list) {
3689 struct device_node *component_of_node = pos->dev->of_node;
3691 if (!component_of_node && pos->dev->parent)
3692 component_of_node = pos->dev->parent->of_node;
3694 if (component_of_node != node)
3697 if (pos->driver->of_xlate_dai_id)
3698 ret = pos->driver->of_xlate_dai_id(pos, ep);
3702 mutex_unlock(&client_mutex);
3708 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
3710 int snd_soc_get_dai_name(struct of_phandle_args *args,
3711 const char **dai_name)
3713 struct snd_soc_component *pos;
3714 struct device_node *component_of_node;
3715 int ret = -EPROBE_DEFER;
3717 mutex_lock(&client_mutex);
3718 list_for_each_entry(pos, &component_list, list) {
3719 component_of_node = pos->dev->of_node;
3720 if (!component_of_node && pos->dev->parent)
3721 component_of_node = pos->dev->parent->of_node;
3723 if (component_of_node != args->np)
3726 if (pos->driver->of_xlate_dai_name) {
3727 ret = pos->driver->of_xlate_dai_name(pos,
3731 struct snd_soc_dai *dai;
3734 switch (args->args_count) {
3736 id = 0; /* same as dai_drv[0] */
3746 if (id < 0 || id >= pos->num_dai) {
3753 /* find target DAI */
3754 list_for_each_entry(dai, &pos->dai_list, list) {
3760 *dai_name = dai->driver->name;
3762 *dai_name = pos->name;
3767 mutex_unlock(&client_mutex);
3770 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
3772 int snd_soc_of_get_dai_name(struct device_node *of_node,
3773 const char **dai_name)
3775 struct of_phandle_args args;
3778 ret = of_parse_phandle_with_args(of_node, "sound-dai",
3779 "#sound-dai-cells", 0, &args);
3783 ret = snd_soc_get_dai_name(&args, dai_name);
3785 of_node_put(args.np);
3789 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
3792 * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array
3793 * @dai_link: DAI link
3795 * Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs().
3797 void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link *dai_link)
3799 struct snd_soc_dai_link_component *component = dai_link->codecs;
3802 for (index = 0; index < dai_link->num_codecs; index++, component++) {
3803 if (!component->of_node)
3805 of_node_put(component->of_node);
3806 component->of_node = NULL;
3809 EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs);
3812 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3814 * @of_node: Device node
3815 * @dai_link: DAI link
3817 * Builds an array of CODEC DAI components from the DAI link property
3819 * The array is set in the DAI link and the number of DAIs is set accordingly.
3820 * The device nodes in the array (of_node) must be dereferenced by calling
3821 * snd_soc_of_put_dai_link_codecs() on @dai_link.
3823 * Returns 0 for success
3825 int snd_soc_of_get_dai_link_codecs(struct device *dev,
3826 struct device_node *of_node,
3827 struct snd_soc_dai_link *dai_link)
3829 struct of_phandle_args args;
3830 struct snd_soc_dai_link_component *component;
3832 int index, num_codecs, ret;
3834 /* Count the number of CODECs */
3836 num_codecs = of_count_phandle_with_args(of_node, name,
3837 "#sound-dai-cells");
3838 if (num_codecs <= 0) {
3839 if (num_codecs == -ENOENT)
3840 dev_err(dev, "No 'sound-dai' property\n");
3842 dev_err(dev, "Bad phandle in 'sound-dai'\n");
3845 component = devm_kcalloc(dev,
3846 num_codecs, sizeof(*component),
3850 dai_link->codecs = component;
3851 dai_link->num_codecs = num_codecs;
3853 /* Parse the list */
3854 for (index = 0, component = dai_link->codecs;
3855 index < dai_link->num_codecs;
3856 index++, component++) {
3857 ret = of_parse_phandle_with_args(of_node, name,
3862 component->of_node = args.np;
3863 ret = snd_soc_get_dai_name(&args, &component->dai_name);
3869 snd_soc_of_put_dai_link_codecs(dai_link);
3870 dai_link->codecs = NULL;
3871 dai_link->num_codecs = 0;
3874 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
3876 static int __init snd_soc_init(void)
3878 snd_soc_debugfs_init();
3879 snd_soc_util_init();
3881 return platform_driver_register(&soc_driver);
3883 module_init(snd_soc_init);
3885 static void __exit snd_soc_exit(void)
3887 snd_soc_util_exit();
3888 snd_soc_debugfs_exit();
3890 platform_driver_unregister(&soc_driver);
3892 module_exit(snd_soc_exit);
3894 /* Module information */
3895 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3896 MODULE_DESCRIPTION("ALSA SoC Core");
3897 MODULE_LICENSE("GPL");
3898 MODULE_ALIAS("platform:soc-audio");