2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/soc-topology.h>
44 #include <sound/initval.h>
46 #define CREATE_TRACE_POINTS
47 #include <trace/events/asoc.h>
51 #ifdef CONFIG_DEBUG_FS
52 struct dentry *snd_soc_debugfs_root;
53 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
56 static DEFINE_MUTEX(client_mutex);
57 static LIST_HEAD(platform_list);
58 static LIST_HEAD(codec_list);
59 static LIST_HEAD(component_list);
62 * This is a timeout to do a DAPM powerdown after a stream is closed().
63 * It can be used to eliminate pops between different playback streams, e.g.
64 * between two audio tracks.
66 static int pmdown_time = 5000;
67 module_param(pmdown_time, int, 0);
68 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
70 /* returns the minimum number of bytes needed to represent
71 * a particular given value */
72 static int min_bytes_needed(unsigned long val)
77 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
80 c = (sizeof val * 8) - c;
88 /* fill buf which is 'len' bytes with a formatted
89 * string of the form 'reg: value\n' */
90 static int format_register_str(struct snd_soc_codec *codec,
91 unsigned int reg, char *buf, size_t len)
93 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
94 int regsize = codec->driver->reg_word_size * 2;
97 /* +2 for ': ' and + 1 for '\n' */
98 if (wordsize + regsize + 2 + 1 != len)
101 sprintf(buf, "%.*x: ", wordsize, reg);
104 ret = snd_soc_read(codec, reg);
106 memset(buf, 'X', regsize);
108 sprintf(buf, "%.*x", regsize, ret);
110 /* no NUL-termination needed */
114 /* codec register dump */
115 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
116 size_t count, loff_t pos)
119 int wordsize, regsize;
124 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
125 regsize = codec->driver->reg_word_size * 2;
127 len = wordsize + regsize + 2 + 1;
129 if (!codec->driver->reg_cache_size)
132 if (codec->driver->reg_cache_step)
133 step = codec->driver->reg_cache_step;
135 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
136 /* only support larger than PAGE_SIZE bytes debugfs
137 * entries for the default case */
139 if (total + len >= count - 1)
141 format_register_str(codec, i, buf + total, len);
147 total = min(total, count - 1);
152 static ssize_t codec_reg_show(struct device *dev,
153 struct device_attribute *attr, char *buf)
155 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
157 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
160 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
162 static ssize_t pmdown_time_show(struct device *dev,
163 struct device_attribute *attr, char *buf)
165 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
167 return sprintf(buf, "%ld\n", rtd->pmdown_time);
170 static ssize_t pmdown_time_set(struct device *dev,
171 struct device_attribute *attr,
172 const char *buf, size_t count)
174 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
177 ret = kstrtol(buf, 10, &rtd->pmdown_time);
184 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
186 static struct attribute *soc_dev_attrs[] = {
187 &dev_attr_codec_reg.attr,
188 &dev_attr_pmdown_time.attr,
192 static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
193 struct attribute *attr, int idx)
195 struct device *dev = kobj_to_dev(kobj);
196 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
198 if (attr == &dev_attr_pmdown_time.attr)
199 return attr->mode; /* always visible */
200 return rtd->codec ? attr->mode : 0; /* enabled only with codec */
203 static const struct attribute_group soc_dapm_dev_group = {
204 .attrs = soc_dapm_dev_attrs,
205 .is_visible = soc_dev_attr_is_visible,
208 static const struct attribute_group soc_dev_roup = {
209 .attrs = soc_dev_attrs,
210 .is_visible = soc_dev_attr_is_visible,
213 static const struct attribute_group *soc_dev_attr_groups[] = {
219 #ifdef CONFIG_DEBUG_FS
220 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
221 size_t count, loff_t *ppos)
224 struct snd_soc_codec *codec = file->private_data;
227 if (*ppos < 0 || !count)
230 buf = kmalloc(count, GFP_KERNEL);
234 ret = soc_codec_reg_show(codec, buf, count, *ppos);
236 if (copy_to_user(user_buf, buf, ret)) {
247 static ssize_t codec_reg_write_file(struct file *file,
248 const char __user *user_buf, size_t count, loff_t *ppos)
253 unsigned long reg, value;
254 struct snd_soc_codec *codec = file->private_data;
257 buf_size = min(count, (sizeof(buf)-1));
258 if (copy_from_user(buf, user_buf, buf_size))
262 while (*start == ' ')
264 reg = simple_strtoul(start, &start, 16);
265 while (*start == ' ')
267 ret = kstrtoul(start, 16, &value);
271 /* Userspace has been fiddling around behind the kernel's back */
272 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
274 snd_soc_write(codec, reg, value);
278 static const struct file_operations codec_reg_fops = {
280 .read = codec_reg_read_file,
281 .write = codec_reg_write_file,
282 .llseek = default_llseek,
285 static void soc_init_component_debugfs(struct snd_soc_component *component)
287 if (!component->card->debugfs_card_root)
290 if (component->debugfs_prefix) {
293 name = kasprintf(GFP_KERNEL, "%s:%s",
294 component->debugfs_prefix, component->name);
296 component->debugfs_root = debugfs_create_dir(name,
297 component->card->debugfs_card_root);
301 component->debugfs_root = debugfs_create_dir(component->name,
302 component->card->debugfs_card_root);
305 if (!component->debugfs_root) {
306 dev_warn(component->dev,
307 "ASoC: Failed to create component debugfs directory\n");
311 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
312 component->debugfs_root);
314 if (component->init_debugfs)
315 component->init_debugfs(component);
318 static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
320 debugfs_remove_recursive(component->debugfs_root);
323 static void soc_init_codec_debugfs(struct snd_soc_component *component)
325 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
327 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
328 codec->component.debugfs_root,
329 codec, &codec_reg_fops);
330 if (!codec->debugfs_reg)
332 "ASoC: Failed to create codec register debugfs file\n");
335 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
336 size_t count, loff_t *ppos)
338 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
339 ssize_t len, ret = 0;
340 struct snd_soc_codec *codec;
345 mutex_lock(&client_mutex);
347 list_for_each_entry(codec, &codec_list, list) {
348 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
349 codec->component.name);
352 if (ret > PAGE_SIZE) {
358 mutex_unlock(&client_mutex);
361 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
368 static const struct file_operations codec_list_fops = {
369 .read = codec_list_read_file,
370 .llseek = default_llseek,/* read accesses f_pos */
373 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
374 size_t count, loff_t *ppos)
376 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
377 ssize_t len, ret = 0;
378 struct snd_soc_component *component;
379 struct snd_soc_dai *dai;
384 mutex_lock(&client_mutex);
386 list_for_each_entry(component, &component_list, list) {
387 list_for_each_entry(dai, &component->dai_list, list) {
388 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
392 if (ret > PAGE_SIZE) {
399 mutex_unlock(&client_mutex);
401 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
408 static const struct file_operations dai_list_fops = {
409 .read = dai_list_read_file,
410 .llseek = default_llseek,/* read accesses f_pos */
413 static ssize_t platform_list_read_file(struct file *file,
414 char __user *user_buf,
415 size_t count, loff_t *ppos)
417 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
418 ssize_t len, ret = 0;
419 struct snd_soc_platform *platform;
424 mutex_lock(&client_mutex);
426 list_for_each_entry(platform, &platform_list, list) {
427 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
428 platform->component.name);
431 if (ret > PAGE_SIZE) {
437 mutex_unlock(&client_mutex);
439 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
446 static const struct file_operations platform_list_fops = {
447 .read = platform_list_read_file,
448 .llseek = default_llseek,/* read accesses f_pos */
451 static void soc_init_card_debugfs(struct snd_soc_card *card)
453 if (!snd_soc_debugfs_root)
456 card->debugfs_card_root = debugfs_create_dir(card->name,
457 snd_soc_debugfs_root);
458 if (!card->debugfs_card_root) {
460 "ASoC: Failed to create card debugfs directory\n");
464 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
465 card->debugfs_card_root,
467 if (!card->debugfs_pop_time)
469 "ASoC: Failed to create pop time debugfs file\n");
472 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
474 debugfs_remove_recursive(card->debugfs_card_root);
478 static void snd_soc_debugfs_init(void)
480 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
481 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
482 pr_warn("ASoC: Failed to create debugfs directory\n");
483 snd_soc_debugfs_root = NULL;
487 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
489 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
491 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
493 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
495 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
496 &platform_list_fops))
497 pr_warn("ASoC: Failed to create platform list debugfs file\n");
500 static void snd_soc_debugfs_exit(void)
502 debugfs_remove_recursive(snd_soc_debugfs_root);
507 #define soc_init_codec_debugfs NULL
509 static inline void soc_init_component_debugfs(
510 struct snd_soc_component *component)
514 static inline void soc_cleanup_component_debugfs(
515 struct snd_soc_component *component)
519 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
523 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
527 static inline void snd_soc_debugfs_init(void)
531 static inline void snd_soc_debugfs_exit(void)
537 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
538 const char *dai_link, int stream)
540 struct snd_soc_pcm_runtime *rtd;
542 list_for_each_entry(rtd, &card->rtd_list, list) {
543 if (rtd->dai_link->no_pcm &&
544 !strcmp(rtd->dai_link->name, dai_link))
545 return rtd->pcm->streams[stream].substream;
547 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
550 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
552 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
553 struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
555 struct snd_soc_pcm_runtime *rtd;
557 rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
562 rtd->dai_link = dai_link;
563 rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) *
564 dai_link->num_codecs,
566 if (!rtd->codec_dais) {
574 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
576 if (rtd && rtd->codec_dais)
577 kfree(rtd->codec_dais);
581 static void soc_add_pcm_runtime(struct snd_soc_card *card,
582 struct snd_soc_pcm_runtime *rtd)
584 list_add_tail(&rtd->list, &card->rtd_list);
585 rtd->num = card->num_rtd;
589 static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
591 struct snd_soc_pcm_runtime *rtd, *_rtd;
593 list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) {
594 list_del(&rtd->list);
595 soc_free_pcm_runtime(rtd);
601 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
602 const char *dai_link)
604 struct snd_soc_pcm_runtime *rtd;
606 list_for_each_entry(rtd, &card->rtd_list, list) {
607 if (!strcmp(rtd->dai_link->name, dai_link))
610 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
613 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
615 static void codec2codec_close_delayed_work(struct work_struct *work)
617 /* Currently nothing to do for c2c links
618 * Since c2c links are internal nodes in the DAPM graph and
619 * don't interface with the outside world or application layer
620 * we don't have to do any special handling on close.
624 #ifdef CONFIG_PM_SLEEP
625 /* powers down audio subsystem for suspend */
626 int snd_soc_suspend(struct device *dev)
628 struct snd_soc_card *card = dev_get_drvdata(dev);
629 struct snd_soc_component *component;
630 struct snd_soc_pcm_runtime *rtd;
633 /* If the card is not initialized yet there is nothing to do */
634 if (!card->instantiated)
637 /* Due to the resume being scheduled into a workqueue we could
638 * suspend before that's finished - wait for it to complete.
640 snd_power_lock(card->snd_card);
641 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
642 snd_power_unlock(card->snd_card);
644 /* we're going to block userspace touching us until resume completes */
645 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
647 /* mute any active DACs */
648 list_for_each_entry(rtd, &card->rtd_list, list) {
650 if (rtd->dai_link->ignore_suspend)
653 for (i = 0; i < rtd->num_codecs; i++) {
654 struct snd_soc_dai *dai = rtd->codec_dais[i];
655 struct snd_soc_dai_driver *drv = dai->driver;
657 if (drv->ops->digital_mute && dai->playback_active)
658 drv->ops->digital_mute(dai, 1);
662 /* suspend all pcms */
663 list_for_each_entry(rtd, &card->rtd_list, list) {
664 if (rtd->dai_link->ignore_suspend)
667 snd_pcm_suspend_all(rtd->pcm);
670 if (card->suspend_pre)
671 card->suspend_pre(card);
673 list_for_each_entry(rtd, &card->rtd_list, list) {
674 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
676 if (rtd->dai_link->ignore_suspend)
679 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
680 cpu_dai->driver->suspend(cpu_dai);
683 /* close any waiting streams */
684 list_for_each_entry(rtd, &card->rtd_list, list)
685 flush_delayed_work(&rtd->delayed_work);
687 list_for_each_entry(rtd, &card->rtd_list, list) {
689 if (rtd->dai_link->ignore_suspend)
692 snd_soc_dapm_stream_event(rtd,
693 SNDRV_PCM_STREAM_PLAYBACK,
694 SND_SOC_DAPM_STREAM_SUSPEND);
696 snd_soc_dapm_stream_event(rtd,
697 SNDRV_PCM_STREAM_CAPTURE,
698 SND_SOC_DAPM_STREAM_SUSPEND);
701 /* Recheck all endpoints too, their state is affected by suspend */
702 dapm_mark_endpoints_dirty(card);
703 snd_soc_dapm_sync(&card->dapm);
705 /* suspend all COMPONENTs */
706 list_for_each_entry(component, &card->component_dev_list, card_list) {
707 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
709 /* If there are paths active then the COMPONENT will be held with
710 * bias _ON and should not be suspended. */
711 if (!component->suspended) {
712 switch (snd_soc_dapm_get_bias_level(dapm)) {
713 case SND_SOC_BIAS_STANDBY:
715 * If the COMPONENT is capable of idle
716 * bias off then being in STANDBY
717 * means it's doing something,
718 * otherwise fall through.
720 if (dapm->idle_bias_off) {
721 dev_dbg(component->dev,
722 "ASoC: idle_bias_off CODEC on over suspend\n");
726 case SND_SOC_BIAS_OFF:
727 if (component->suspend)
728 component->suspend(component);
729 component->suspended = 1;
730 if (component->regmap)
731 regcache_mark_dirty(component->regmap);
732 /* deactivate pins to sleep state */
733 pinctrl_pm_select_sleep_state(component->dev);
736 dev_dbg(component->dev,
737 "ASoC: COMPONENT is on over suspend\n");
743 list_for_each_entry(rtd, &card->rtd_list, list) {
744 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
746 if (rtd->dai_link->ignore_suspend)
749 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
750 cpu_dai->driver->suspend(cpu_dai);
752 /* deactivate pins to sleep state */
753 pinctrl_pm_select_sleep_state(cpu_dai->dev);
756 if (card->suspend_post)
757 card->suspend_post(card);
761 EXPORT_SYMBOL_GPL(snd_soc_suspend);
763 /* deferred resume work, so resume can complete before we finished
764 * setting our codec back up, which can be very slow on I2C
766 static void soc_resume_deferred(struct work_struct *work)
768 struct snd_soc_card *card =
769 container_of(work, struct snd_soc_card, deferred_resume_work);
770 struct snd_soc_pcm_runtime *rtd;
771 struct snd_soc_component *component;
774 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
775 * so userspace apps are blocked from touching us
778 dev_dbg(card->dev, "ASoC: starting resume work\n");
780 /* Bring us up into D2 so that DAPM starts enabling things */
781 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
783 if (card->resume_pre)
784 card->resume_pre(card);
786 /* resume control bus DAIs */
787 list_for_each_entry(rtd, &card->rtd_list, list) {
788 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
790 if (rtd->dai_link->ignore_suspend)
793 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
794 cpu_dai->driver->resume(cpu_dai);
797 list_for_each_entry(component, &card->component_dev_list, card_list) {
798 if (component->suspended) {
799 if (component->resume)
800 component->resume(component);
801 component->suspended = 0;
805 list_for_each_entry(rtd, &card->rtd_list, list) {
807 if (rtd->dai_link->ignore_suspend)
810 snd_soc_dapm_stream_event(rtd,
811 SNDRV_PCM_STREAM_PLAYBACK,
812 SND_SOC_DAPM_STREAM_RESUME);
814 snd_soc_dapm_stream_event(rtd,
815 SNDRV_PCM_STREAM_CAPTURE,
816 SND_SOC_DAPM_STREAM_RESUME);
819 /* unmute any active DACs */
820 list_for_each_entry(rtd, &card->rtd_list, list) {
822 if (rtd->dai_link->ignore_suspend)
825 for (i = 0; i < rtd->num_codecs; i++) {
826 struct snd_soc_dai *dai = rtd->codec_dais[i];
827 struct snd_soc_dai_driver *drv = dai->driver;
829 if (drv->ops->digital_mute && dai->playback_active)
830 drv->ops->digital_mute(dai, 0);
834 list_for_each_entry(rtd, &card->rtd_list, list) {
835 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
837 if (rtd->dai_link->ignore_suspend)
840 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
841 cpu_dai->driver->resume(cpu_dai);
844 if (card->resume_post)
845 card->resume_post(card);
847 dev_dbg(card->dev, "ASoC: resume work completed\n");
849 /* Recheck all endpoints too, their state is affected by suspend */
850 dapm_mark_endpoints_dirty(card);
851 snd_soc_dapm_sync(&card->dapm);
853 /* userspace can access us now we are back as we were before */
854 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
857 /* powers up audio subsystem after a suspend */
858 int snd_soc_resume(struct device *dev)
860 struct snd_soc_card *card = dev_get_drvdata(dev);
861 bool bus_control = false;
862 struct snd_soc_pcm_runtime *rtd;
864 /* If the card is not initialized yet there is nothing to do */
865 if (!card->instantiated)
868 /* activate pins from sleep state */
869 list_for_each_entry(rtd, &card->rtd_list, list) {
870 struct snd_soc_dai **codec_dais = rtd->codec_dais;
871 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
875 pinctrl_pm_select_default_state(cpu_dai->dev);
877 for (j = 0; j < rtd->num_codecs; j++) {
878 struct snd_soc_dai *codec_dai = codec_dais[j];
879 if (codec_dai->active)
880 pinctrl_pm_select_default_state(codec_dai->dev);
885 * DAIs that also act as the control bus master might have other drivers
886 * hanging off them so need to resume immediately. Other drivers don't
887 * have that problem and may take a substantial amount of time to resume
888 * due to I/O costs and anti-pop so handle them out of line.
890 list_for_each_entry(rtd, &card->rtd_list, list) {
891 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
892 bus_control |= cpu_dai->driver->bus_control;
895 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
896 soc_resume_deferred(&card->deferred_resume_work);
898 dev_dbg(dev, "ASoC: Scheduling resume work\n");
899 if (!schedule_work(&card->deferred_resume_work))
900 dev_err(dev, "ASoC: resume work item may be lost\n");
905 EXPORT_SYMBOL_GPL(snd_soc_resume);
907 #define snd_soc_suspend NULL
908 #define snd_soc_resume NULL
911 static const struct snd_soc_dai_ops null_dai_ops = {
914 static struct snd_soc_component *soc_find_component(
915 const struct device_node *of_node, const char *name)
917 struct snd_soc_component *component;
919 lockdep_assert_held(&client_mutex);
921 list_for_each_entry(component, &component_list, list) {
923 if (component->dev->of_node == of_node)
925 } else if (strcmp(component->name, name) == 0) {
934 * snd_soc_find_dai - Find a registered DAI
936 * @dlc: name of the DAI and optional component info to match
938 * This function will search all regsitered components and their DAIs to
939 * find the DAI of the same name. The component's of_node and name
940 * should also match if being specified.
942 * Return: pointer of DAI, or NULL if not found.
944 struct snd_soc_dai *snd_soc_find_dai(
945 const struct snd_soc_dai_link_component *dlc)
947 struct snd_soc_component *component;
948 struct snd_soc_dai *dai;
949 struct device_node *component_of_node;
951 lockdep_assert_held(&client_mutex);
953 /* Find CPU DAI from registered DAIs*/
954 list_for_each_entry(component, &component_list, list) {
955 component_of_node = component->dev->of_node;
956 if (!component_of_node && component->dev->parent)
957 component_of_node = component->dev->parent->of_node;
959 if (dlc->of_node && component_of_node != dlc->of_node)
961 if (dlc->name && strcmp(component->name, dlc->name))
963 list_for_each_entry(dai, &component->dai_list, list) {
964 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
973 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
975 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
976 struct snd_soc_dai_link *dai_link)
978 struct snd_soc_pcm_runtime *rtd;
980 list_for_each_entry(rtd, &card->rtd_list, list) {
981 if (rtd->dai_link == dai_link)
988 static int soc_bind_dai_link(struct snd_soc_card *card,
989 struct snd_soc_dai_link *dai_link)
991 struct snd_soc_pcm_runtime *rtd;
992 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
993 struct snd_soc_dai_link_component cpu_dai_component;
994 struct snd_soc_dai **codec_dais;
995 struct snd_soc_platform *platform;
996 struct device_node *platform_of_node;
997 const char *platform_name;
1000 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
1002 if (soc_is_dai_link_bound(card, dai_link)) {
1003 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
1008 rtd = soc_new_pcm_runtime(card, dai_link);
1012 cpu_dai_component.name = dai_link->cpu_name;
1013 cpu_dai_component.of_node = dai_link->cpu_of_node;
1014 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
1015 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
1016 if (!rtd->cpu_dai) {
1017 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
1018 dai_link->cpu_dai_name);
1022 rtd->num_codecs = dai_link->num_codecs;
1024 /* Find CODEC from registered CODECs */
1025 codec_dais = rtd->codec_dais;
1026 for (i = 0; i < rtd->num_codecs; i++) {
1027 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
1028 if (!codec_dais[i]) {
1029 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
1030 codecs[i].dai_name);
1035 /* Single codec links expect codec and codec_dai in runtime data */
1036 rtd->codec_dai = codec_dais[0];
1037 rtd->codec = rtd->codec_dai->codec;
1039 /* if there's no platform we match on the empty platform */
1040 platform_name = dai_link->platform_name;
1041 if (!platform_name && !dai_link->platform_of_node)
1042 platform_name = "snd-soc-dummy";
1044 /* find one from the set of registered platforms */
1045 list_for_each_entry(platform, &platform_list, list) {
1046 platform_of_node = platform->dev->of_node;
1047 if (!platform_of_node && platform->dev->parent->of_node)
1048 platform_of_node = platform->dev->parent->of_node;
1050 if (dai_link->platform_of_node) {
1051 if (platform_of_node != dai_link->platform_of_node)
1054 if (strcmp(platform->component.name, platform_name))
1058 rtd->platform = platform;
1060 if (!rtd->platform) {
1061 dev_err(card->dev, "ASoC: platform %s not registered\n",
1062 dai_link->platform_name);
1066 soc_add_pcm_runtime(card, rtd);
1070 soc_free_pcm_runtime(rtd);
1071 return -EPROBE_DEFER;
1074 static void soc_remove_component(struct snd_soc_component *component)
1076 if (!component->card)
1079 list_del(&component->card_list);
1081 if (component->remove)
1082 component->remove(component);
1084 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
1086 soc_cleanup_component_debugfs(component);
1087 component->card = NULL;
1088 module_put(component->dev->driver->owner);
1091 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
1095 if (dai && dai->probed &&
1096 dai->driver->remove_order == order) {
1097 if (dai->driver->remove) {
1098 err = dai->driver->remove(dai);
1101 "ASoC: failed to remove %s: %d\n",
1108 static void soc_remove_link_dais(struct snd_soc_card *card,
1109 struct snd_soc_pcm_runtime *rtd, int order)
1113 /* unregister the rtd device */
1114 if (rtd->dev_registered) {
1115 device_unregister(rtd->dev);
1116 rtd->dev_registered = 0;
1119 /* remove the CODEC DAI */
1120 for (i = 0; i < rtd->num_codecs; i++)
1121 soc_remove_dai(rtd->codec_dais[i], order);
1123 soc_remove_dai(rtd->cpu_dai, order);
1126 static void soc_remove_link_components(struct snd_soc_card *card,
1127 struct snd_soc_pcm_runtime *rtd, int order)
1129 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1130 struct snd_soc_platform *platform = rtd->platform;
1131 struct snd_soc_component *component;
1134 /* remove the platform */
1135 if (platform && platform->component.driver->remove_order == order)
1136 soc_remove_component(&platform->component);
1138 /* remove the CODEC-side CODEC */
1139 for (i = 0; i < rtd->num_codecs; i++) {
1140 component = rtd->codec_dais[i]->component;
1141 if (component->driver->remove_order == order)
1142 soc_remove_component(component);
1145 /* remove any CPU-side CODEC */
1147 if (cpu_dai->component->driver->remove_order == order)
1148 soc_remove_component(cpu_dai->component);
1152 static void soc_remove_dai_links(struct snd_soc_card *card)
1155 struct snd_soc_pcm_runtime *rtd;
1156 struct snd_soc_dai_link *link, *_link;
1158 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1160 list_for_each_entry(rtd, &card->rtd_list, list)
1161 soc_remove_link_dais(card, rtd, order);
1164 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1166 list_for_each_entry(rtd, &card->rtd_list, list)
1167 soc_remove_link_components(card, rtd, order);
1170 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1171 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1172 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1175 list_del(&link->list);
1176 card->num_dai_links--;
1180 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1181 struct snd_soc_dai_link *dai_link)
1183 /* Legacy codec/codec_dai link is a single entry in multicodec */
1184 if (dai_link->codec_name || dai_link->codec_of_node ||
1185 dai_link->codec_dai_name) {
1186 dai_link->num_codecs = 1;
1188 dai_link->codecs = devm_kzalloc(card->dev,
1189 sizeof(struct snd_soc_dai_link_component),
1191 if (!dai_link->codecs)
1194 dai_link->codecs[0].name = dai_link->codec_name;
1195 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1196 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1199 if (!dai_link->codecs) {
1200 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1207 static int soc_init_dai_link(struct snd_soc_card *card,
1208 struct snd_soc_dai_link *link)
1212 ret = snd_soc_init_multicodec(card, link);
1214 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1218 for (i = 0; i < link->num_codecs; i++) {
1220 * Codec must be specified by 1 of name or OF node,
1221 * not both or neither.
1223 if (!!link->codecs[i].name ==
1224 !!link->codecs[i].of_node) {
1225 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1229 /* Codec DAI name must be specified */
1230 if (!link->codecs[i].dai_name) {
1231 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1238 * Platform may be specified by either name or OF node, but
1239 * can be left unspecified, and a dummy platform will be used.
1241 if (link->platform_name && link->platform_of_node) {
1243 "ASoC: Both platform name/of_node are set for %s\n",
1249 * CPU device may be specified by either name or OF node, but
1250 * can be left unspecified, and will be matched based on DAI
1253 if (link->cpu_name && link->cpu_of_node) {
1255 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1260 * At least one of CPU DAI name or CPU device name/node must be
1263 if (!link->cpu_dai_name &&
1264 !(link->cpu_name || link->cpu_of_node)) {
1266 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1275 * snd_soc_add_dai_link - Add a DAI link dynamically
1276 * @card: The ASoC card to which the DAI link is added
1277 * @dai_link: The new DAI link to add
1279 * This function adds a DAI link to the ASoC card's link list.
1281 * Note: Topology can use this API to add DAI links when probing the
1282 * topology component. And machine drivers can still define static
1283 * DAI links in dai_link array.
1285 int snd_soc_add_dai_link(struct snd_soc_card *card,
1286 struct snd_soc_dai_link *dai_link)
1288 if (dai_link->dobj.type
1289 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1290 dev_err(card->dev, "Invalid dai link type %d\n",
1291 dai_link->dobj.type);
1295 lockdep_assert_held(&client_mutex);
1296 /* Notify the machine driver for extra initialization
1297 * on the link created by topology.
1299 if (dai_link->dobj.type && card->add_dai_link)
1300 card->add_dai_link(card, dai_link);
1302 list_add_tail(&dai_link->list, &card->dai_link_list);
1303 card->num_dai_links++;
1307 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1310 * snd_soc_remove_dai_link - Remove a DAI link from the list
1311 * @card: The ASoC card that owns the link
1312 * @dai_link: The DAI link to remove
1314 * This function removes a DAI link from the ASoC card's link list.
1316 * For DAI links previously added by topology, topology should
1317 * remove them by using the dobj embedded in the link.
1319 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1320 struct snd_soc_dai_link *dai_link)
1322 struct snd_soc_dai_link *link, *_link;
1324 if (dai_link->dobj.type
1325 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1326 dev_err(card->dev, "Invalid dai link type %d\n",
1327 dai_link->dobj.type);
1331 lockdep_assert_held(&client_mutex);
1332 /* Notify the machine driver for extra destruction
1333 * on the link created by topology.
1335 if (dai_link->dobj.type && card->remove_dai_link)
1336 card->remove_dai_link(card, dai_link);
1338 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1339 if (link == dai_link) {
1340 list_del(&link->list);
1341 card->num_dai_links--;
1346 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1348 static void soc_set_name_prefix(struct snd_soc_card *card,
1349 struct snd_soc_component *component)
1353 if (card->codec_conf == NULL)
1356 for (i = 0; i < card->num_configs; i++) {
1357 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1358 if (map->of_node && component->dev->of_node != map->of_node)
1360 if (map->dev_name && strcmp(component->name, map->dev_name))
1362 component->name_prefix = map->name_prefix;
1367 static int soc_probe_component(struct snd_soc_card *card,
1368 struct snd_soc_component *component)
1370 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1371 struct snd_soc_dai *dai;
1374 if (!strcmp(component->name, "snd-soc-dummy"))
1377 if (component->card) {
1378 if (component->card != card) {
1379 dev_err(component->dev,
1380 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1381 card->name, component->card->name);
1387 if (!try_module_get(component->dev->driver->owner))
1390 component->card = card;
1392 soc_set_name_prefix(card, component);
1394 soc_init_component_debugfs(component);
1396 if (component->dapm_widgets) {
1397 ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets,
1398 component->num_dapm_widgets);
1401 dev_err(component->dev,
1402 "Failed to create new controls %d\n", ret);
1407 list_for_each_entry(dai, &component->dai_list, list) {
1408 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1410 dev_err(component->dev,
1411 "Failed to create DAI widgets %d\n", ret);
1416 if (component->probe) {
1417 ret = component->probe(component);
1419 dev_err(component->dev,
1420 "ASoC: failed to probe component %d\n", ret);
1424 WARN(dapm->idle_bias_off &&
1425 dapm->bias_level != SND_SOC_BIAS_OFF,
1426 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1430 /* machine specific init */
1431 if (component->init) {
1432 ret = component->init(component);
1434 dev_err(component->dev,
1435 "Failed to do machine specific init %d\n", ret);
1440 if (component->controls)
1441 snd_soc_add_component_controls(component, component->controls,
1442 component->num_controls);
1443 if (component->dapm_routes)
1444 snd_soc_dapm_add_routes(dapm, component->dapm_routes,
1445 component->num_dapm_routes);
1447 list_add(&dapm->list, &card->dapm_list);
1448 list_add(&component->card_list, &card->component_dev_list);
1453 soc_cleanup_component_debugfs(component);
1454 component->card = NULL;
1455 module_put(component->dev->driver->owner);
1460 static void rtd_release(struct device *dev)
1465 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1470 /* register the rtd device */
1471 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1474 device_initialize(rtd->dev);
1475 rtd->dev->parent = rtd->card->dev;
1476 rtd->dev->release = rtd_release;
1477 rtd->dev->groups = soc_dev_attr_groups;
1478 dev_set_name(rtd->dev, "%s", name);
1479 dev_set_drvdata(rtd->dev, rtd);
1480 mutex_init(&rtd->pcm_mutex);
1481 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1482 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1483 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1484 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1485 ret = device_add(rtd->dev);
1487 /* calling put_device() here to free the rtd->dev */
1488 put_device(rtd->dev);
1489 dev_err(rtd->card->dev,
1490 "ASoC: failed to register runtime device: %d\n", ret);
1493 rtd->dev_registered = 1;
1497 static int soc_probe_link_components(struct snd_soc_card *card,
1498 struct snd_soc_pcm_runtime *rtd,
1501 struct snd_soc_platform *platform = rtd->platform;
1502 struct snd_soc_component *component;
1505 /* probe the CPU-side component, if it is a CODEC */
1506 component = rtd->cpu_dai->component;
1507 if (component->driver->probe_order == order) {
1508 ret = soc_probe_component(card, component);
1513 /* probe the CODEC-side components */
1514 for (i = 0; i < rtd->num_codecs; i++) {
1515 component = rtd->codec_dais[i]->component;
1516 if (component->driver->probe_order == order) {
1517 ret = soc_probe_component(card, component);
1523 /* probe the platform */
1524 if (platform->component.driver->probe_order == order) {
1525 ret = soc_probe_component(card, &platform->component);
1533 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1537 if (!dai->probed && dai->driver->probe_order == order) {
1538 if (dai->driver->probe) {
1539 ret = dai->driver->probe(dai);
1542 "ASoC: failed to probe DAI %s: %d\n",
1554 static int soc_link_dai_widgets(struct snd_soc_card *card,
1555 struct snd_soc_dai_link *dai_link,
1556 struct snd_soc_pcm_runtime *rtd)
1558 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1559 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1560 struct snd_soc_dapm_widget *sink, *source;
1563 if (rtd->num_codecs > 1)
1564 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1566 /* link the DAI widgets */
1567 sink = codec_dai->playback_widget;
1568 source = cpu_dai->capture_widget;
1569 if (sink && source) {
1570 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1571 dai_link->num_params,
1574 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1575 sink->name, source->name, ret);
1580 sink = cpu_dai->playback_widget;
1581 source = codec_dai->capture_widget;
1582 if (sink && source) {
1583 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1584 dai_link->num_params,
1587 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1588 sink->name, source->name, ret);
1596 static int soc_probe_link_dais(struct snd_soc_card *card,
1597 struct snd_soc_pcm_runtime *rtd, int order)
1599 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1600 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1603 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1604 card->name, rtd->num, order);
1606 /* set default power off timeout */
1607 rtd->pmdown_time = pmdown_time;
1609 ret = soc_probe_dai(cpu_dai, order);
1613 /* probe the CODEC DAI */
1614 for (i = 0; i < rtd->num_codecs; i++) {
1615 ret = soc_probe_dai(rtd->codec_dais[i], order);
1620 /* complete DAI probe during last probe */
1621 if (order != SND_SOC_COMP_ORDER_LAST)
1624 /* do machine specific initialization */
1625 if (dai_link->init) {
1626 ret = dai_link->init(rtd);
1628 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1629 dai_link->name, ret);
1634 if (dai_link->dai_fmt)
1635 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1637 ret = soc_post_component_init(rtd, dai_link->name);
1641 #ifdef CONFIG_DEBUG_FS
1642 /* add DPCM sysfs entries */
1643 if (dai_link->dynamic)
1644 soc_dpcm_debugfs_add(rtd);
1647 if (cpu_dai->driver->compress_new) {
1648 /*create compress_device"*/
1649 ret = cpu_dai->driver->compress_new(rtd, rtd->num);
1651 dev_err(card->dev, "ASoC: can't create compress %s\n",
1652 dai_link->stream_name);
1657 if (!dai_link->params) {
1658 /* create the pcm */
1659 ret = soc_new_pcm(rtd, rtd->num);
1661 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1662 dai_link->stream_name, ret);
1666 INIT_DELAYED_WORK(&rtd->delayed_work,
1667 codec2codec_close_delayed_work);
1669 /* link the DAI widgets */
1670 ret = soc_link_dai_widgets(card, dai_link, rtd);
1679 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1681 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1682 struct snd_soc_component *component;
1684 struct device_node *codec_of_node;
1686 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1687 /* codecs, usually analog devices */
1688 name = aux_dev->codec_name;
1689 codec_of_node = aux_dev->codec_of_node;
1690 component = soc_find_component(codec_of_node, name);
1693 name = of_node_full_name(codec_of_node);
1696 } else if (aux_dev->name) {
1697 /* generic components */
1698 name = aux_dev->name;
1699 component = soc_find_component(NULL, name);
1703 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1707 component->init = aux_dev->init;
1708 component->auxiliary = 1;
1713 dev_err(card->dev, "ASoC: %s not registered\n", name);
1714 return -EPROBE_DEFER;
1717 static int soc_probe_aux_devices(struct snd_soc_card *card)
1719 struct snd_soc_component *comp;
1723 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1725 list_for_each_entry(comp, &card->component_dev_list, card_list) {
1726 if (!comp->auxiliary)
1729 if (comp->driver->probe_order == order) {
1730 ret = soc_probe_component(card, comp);
1733 "ASoC: failed to probe aux component %s %d\n",
1744 static void soc_remove_aux_devices(struct snd_soc_card *card)
1746 struct snd_soc_component *comp, *_comp;
1749 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1751 list_for_each_entry_safe(comp, _comp,
1752 &card->component_dev_list, card_list) {
1754 if (!comp->auxiliary)
1757 if (comp->driver->remove_order == order) {
1758 soc_remove_component(comp);
1759 comp->auxiliary = 0;
1765 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1769 if (codec->cache_init)
1772 ret = snd_soc_cache_init(codec);
1775 "ASoC: Failed to set cache compression type: %d\n",
1779 codec->cache_init = 1;
1784 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1785 * @rtd: The runtime for which the DAI link format should be changed
1786 * @dai_fmt: The new DAI link format
1788 * This function updates the DAI link format for all DAIs connected to the DAI
1789 * link for the specified runtime.
1791 * Note: For setups with a static format set the dai_fmt field in the
1792 * corresponding snd_dai_link struct instead of using this function.
1794 * Returns 0 on success, otherwise a negative error code.
1796 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1797 unsigned int dai_fmt)
1799 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1800 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1804 for (i = 0; i < rtd->num_codecs; i++) {
1805 struct snd_soc_dai *codec_dai = codec_dais[i];
1807 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1808 if (ret != 0 && ret != -ENOTSUPP) {
1809 dev_warn(codec_dai->dev,
1810 "ASoC: Failed to set DAI format: %d\n", ret);
1815 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1816 if (cpu_dai->codec) {
1817 unsigned int inv_dai_fmt;
1819 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1820 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1821 case SND_SOC_DAIFMT_CBM_CFM:
1822 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1824 case SND_SOC_DAIFMT_CBM_CFS:
1825 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1827 case SND_SOC_DAIFMT_CBS_CFM:
1828 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1830 case SND_SOC_DAIFMT_CBS_CFS:
1831 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1835 dai_fmt = inv_dai_fmt;
1838 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1839 if (ret != 0 && ret != -ENOTSUPP) {
1840 dev_warn(cpu_dai->dev,
1841 "ASoC: Failed to set DAI format: %d\n", ret);
1847 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
1849 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1851 struct snd_soc_codec *codec;
1852 struct snd_soc_pcm_runtime *rtd;
1853 struct snd_soc_dai_link *dai_link;
1856 mutex_lock(&client_mutex);
1857 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1860 for (i = 0; i < card->num_links; i++) {
1861 ret = soc_bind_dai_link(card, &card->dai_link[i]);
1866 /* bind aux_devs too */
1867 for (i = 0; i < card->num_aux_devs; i++) {
1868 ret = soc_bind_aux_dev(card, i);
1873 /* add predefined DAI links to the list */
1874 for (i = 0; i < card->num_links; i++)
1875 snd_soc_add_dai_link(card, card->dai_link+i);
1877 /* initialize the register cache for each available codec */
1878 list_for_each_entry(codec, &codec_list, list) {
1879 if (codec->cache_init)
1881 ret = snd_soc_init_codec_cache(codec);
1886 /* card bind complete so register a sound card */
1887 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1888 card->owner, 0, &card->snd_card);
1891 "ASoC: can't create sound card for card %s: %d\n",
1896 soc_init_card_debugfs(card);
1898 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1899 card->dapm.dev = card->dev;
1900 card->dapm.card = card;
1901 list_add(&card->dapm.list, &card->dapm_list);
1903 #ifdef CONFIG_DEBUG_FS
1904 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1907 #ifdef CONFIG_PM_SLEEP
1908 /* deferred resume work */
1909 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1912 if (card->dapm_widgets)
1913 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1914 card->num_dapm_widgets);
1916 if (card->of_dapm_widgets)
1917 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
1918 card->num_of_dapm_widgets);
1920 /* initialise the sound card only once */
1922 ret = card->probe(card);
1924 goto card_probe_error;
1927 /* probe all components used by DAI links on this card */
1928 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1930 list_for_each_entry(rtd, &card->rtd_list, list) {
1931 ret = soc_probe_link_components(card, rtd, order);
1934 "ASoC: failed to instantiate card %d\n",
1941 /* probe auxiliary components */
1942 ret = soc_probe_aux_devices(card);
1946 /* Find new DAI links added during probing components and bind them.
1947 * Components with topology may bring new DAIs and DAI links.
1949 list_for_each_entry(dai_link, &card->dai_link_list, list) {
1950 if (soc_is_dai_link_bound(card, dai_link))
1953 ret = soc_init_dai_link(card, dai_link);
1956 ret = soc_bind_dai_link(card, dai_link);
1961 /* probe all DAI links on this card */
1962 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1964 list_for_each_entry(rtd, &card->rtd_list, list) {
1965 ret = soc_probe_link_dais(card, rtd, order);
1968 "ASoC: failed to instantiate card %d\n",
1975 snd_soc_dapm_link_dai_widgets(card);
1976 snd_soc_dapm_connect_dai_link_widgets(card);
1979 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1981 if (card->dapm_routes)
1982 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1983 card->num_dapm_routes);
1985 if (card->of_dapm_routes)
1986 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
1987 card->num_of_dapm_routes);
1989 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1991 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1992 "%s", card->long_name ? card->long_name : card->name);
1993 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1994 "%s", card->driver_name ? card->driver_name : card->name);
1995 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1996 switch (card->snd_card->driver[i]) {
2002 if (!isalnum(card->snd_card->driver[i]))
2003 card->snd_card->driver[i] = '_';
2008 if (card->late_probe) {
2009 ret = card->late_probe(card);
2011 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2013 goto probe_aux_dev_err;
2017 snd_soc_dapm_new_widgets(card);
2019 ret = snd_card_register(card->snd_card);
2021 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2023 goto probe_aux_dev_err;
2026 card->instantiated = 1;
2027 snd_soc_dapm_sync(&card->dapm);
2028 mutex_unlock(&card->mutex);
2029 mutex_unlock(&client_mutex);
2034 soc_remove_aux_devices(card);
2037 soc_remove_dai_links(card);
2043 snd_soc_dapm_free(&card->dapm);
2044 soc_cleanup_card_debugfs(card);
2045 snd_card_free(card->snd_card);
2048 soc_remove_pcm_runtimes(card);
2049 mutex_unlock(&card->mutex);
2050 mutex_unlock(&client_mutex);
2055 /* probes a new socdev */
2056 static int soc_probe(struct platform_device *pdev)
2058 struct snd_soc_card *card = platform_get_drvdata(pdev);
2061 * no card, so machine driver should be registering card
2062 * we should not be here in that case so ret error
2067 dev_warn(&pdev->dev,
2068 "ASoC: machine %s should use snd_soc_register_card()\n",
2071 /* Bodge while we unpick instantiation */
2072 card->dev = &pdev->dev;
2074 return snd_soc_register_card(card);
2077 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2079 struct snd_soc_pcm_runtime *rtd;
2081 /* make sure any delayed work runs */
2082 list_for_each_entry(rtd, &card->rtd_list, list)
2083 flush_delayed_work(&rtd->delayed_work);
2085 /* remove and free each DAI */
2086 soc_remove_dai_links(card);
2087 soc_remove_pcm_runtimes(card);
2089 /* remove auxiliary devices */
2090 soc_remove_aux_devices(card);
2092 snd_soc_dapm_free(&card->dapm);
2093 soc_cleanup_card_debugfs(card);
2095 /* remove the card */
2099 snd_card_free(card->snd_card);
2104 /* removes a socdev */
2105 static int soc_remove(struct platform_device *pdev)
2107 struct snd_soc_card *card = platform_get_drvdata(pdev);
2109 snd_soc_unregister_card(card);
2113 int snd_soc_poweroff(struct device *dev)
2115 struct snd_soc_card *card = dev_get_drvdata(dev);
2116 struct snd_soc_pcm_runtime *rtd;
2118 if (!card->instantiated)
2121 /* Flush out pmdown_time work - we actually do want to run it
2122 * now, we're shutting down so no imminent restart. */
2123 list_for_each_entry(rtd, &card->rtd_list, list)
2124 flush_delayed_work(&rtd->delayed_work);
2126 snd_soc_dapm_shutdown(card);
2128 /* deactivate pins to sleep state */
2129 list_for_each_entry(rtd, &card->rtd_list, list) {
2130 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2133 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2134 for (i = 0; i < rtd->num_codecs; i++) {
2135 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
2136 pinctrl_pm_select_sleep_state(codec_dai->dev);
2142 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2144 const struct dev_pm_ops snd_soc_pm_ops = {
2145 .suspend = snd_soc_suspend,
2146 .resume = snd_soc_resume,
2147 .freeze = snd_soc_suspend,
2148 .thaw = snd_soc_resume,
2149 .poweroff = snd_soc_poweroff,
2150 .restore = snd_soc_resume,
2152 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2154 /* ASoC platform driver */
2155 static struct platform_driver soc_driver = {
2157 .name = "soc-audio",
2158 .pm = &snd_soc_pm_ops,
2161 .remove = soc_remove,
2165 * snd_soc_cnew - create new control
2166 * @_template: control template
2167 * @data: control private data
2168 * @long_name: control long name
2169 * @prefix: control name prefix
2171 * Create a new mixer control from a template control.
2173 * Returns 0 for success, else error.
2175 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2176 void *data, const char *long_name,
2179 struct snd_kcontrol_new template;
2180 struct snd_kcontrol *kcontrol;
2183 memcpy(&template, _template, sizeof(template));
2187 long_name = template.name;
2190 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2194 template.name = name;
2196 template.name = long_name;
2199 kcontrol = snd_ctl_new1(&template, data);
2205 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2207 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2208 const struct snd_kcontrol_new *controls, int num_controls,
2209 const char *prefix, void *data)
2213 for (i = 0; i < num_controls; i++) {
2214 const struct snd_kcontrol_new *control = &controls[i];
2215 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2216 control->name, prefix));
2218 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2219 control->name, err);
2227 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2230 struct snd_card *card = soc_card->snd_card;
2231 struct snd_kcontrol *kctl;
2233 if (unlikely(!name))
2236 list_for_each_entry(kctl, &card->controls, list)
2237 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2241 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2244 * snd_soc_add_component_controls - Add an array of controls to a component.
2246 * @component: Component to add controls to
2247 * @controls: Array of controls to add
2248 * @num_controls: Number of elements in the array
2250 * Return: 0 for success, else error.
2252 int snd_soc_add_component_controls(struct snd_soc_component *component,
2253 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2255 struct snd_card *card = component->card->snd_card;
2257 return snd_soc_add_controls(card, component->dev, controls,
2258 num_controls, component->name_prefix, component);
2260 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2263 * snd_soc_add_codec_controls - add an array of controls to a codec.
2264 * Convenience function to add a list of controls. Many codecs were
2265 * duplicating this code.
2267 * @codec: codec to add controls to
2268 * @controls: array of controls to add
2269 * @num_controls: number of elements in the array
2271 * Return 0 for success, else error.
2273 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2274 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2276 return snd_soc_add_component_controls(&codec->component, controls,
2279 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2282 * snd_soc_add_platform_controls - add an array of controls to a platform.
2283 * Convenience function to add a list of controls.
2285 * @platform: platform to add controls to
2286 * @controls: array of controls to add
2287 * @num_controls: number of elements in the array
2289 * Return 0 for success, else error.
2291 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2292 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2294 return snd_soc_add_component_controls(&platform->component, controls,
2297 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2300 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2301 * Convenience function to add a list of controls.
2303 * @soc_card: SoC card to add controls to
2304 * @controls: array of controls to add
2305 * @num_controls: number of elements in the array
2307 * Return 0 for success, else error.
2309 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2310 const struct snd_kcontrol_new *controls, int num_controls)
2312 struct snd_card *card = soc_card->snd_card;
2314 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2317 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2320 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2321 * Convienience function to add a list of controls.
2323 * @dai: DAI to add controls to
2324 * @controls: array of controls to add
2325 * @num_controls: number of elements in the array
2327 * Return 0 for success, else error.
2329 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2330 const struct snd_kcontrol_new *controls, int num_controls)
2332 struct snd_card *card = dai->component->card->snd_card;
2334 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2337 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2340 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2342 * @clk_id: DAI specific clock ID
2343 * @freq: new clock frequency in Hz
2344 * @dir: new clock direction - input/output.
2346 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2348 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2349 unsigned int freq, int dir)
2351 if (dai->driver && dai->driver->ops->set_sysclk)
2352 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2353 else if (dai->codec && dai->codec->driver->set_sysclk)
2354 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2359 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2362 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2364 * @clk_id: DAI specific clock ID
2365 * @source: Source for the clock
2366 * @freq: new clock frequency in Hz
2367 * @dir: new clock direction - input/output.
2369 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2371 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2372 int source, unsigned int freq, int dir)
2374 if (codec->driver->set_sysclk)
2375 return codec->driver->set_sysclk(codec, clk_id, source,
2380 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2383 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2385 * @div_id: DAI specific clock divider ID
2386 * @div: new clock divisor.
2388 * Configures the clock dividers. This is used to derive the best DAI bit and
2389 * frame clocks from the system or master clock. It's best to set the DAI bit
2390 * and frame clocks as low as possible to save system power.
2392 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2393 int div_id, int div)
2395 if (dai->driver && dai->driver->ops->set_clkdiv)
2396 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2400 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2403 * snd_soc_dai_set_pll - configure DAI PLL.
2405 * @pll_id: DAI specific PLL ID
2406 * @source: DAI specific source for the PLL
2407 * @freq_in: PLL input clock frequency in Hz
2408 * @freq_out: requested PLL output clock frequency in Hz
2410 * Configures and enables PLL to generate output clock based on input clock.
2412 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2413 unsigned int freq_in, unsigned int freq_out)
2415 if (dai->driver && dai->driver->ops->set_pll)
2416 return dai->driver->ops->set_pll(dai, pll_id, source,
2418 else if (dai->codec && dai->codec->driver->set_pll)
2419 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2424 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2427 * snd_soc_codec_set_pll - configure codec PLL.
2429 * @pll_id: DAI specific PLL ID
2430 * @source: DAI specific source for the PLL
2431 * @freq_in: PLL input clock frequency in Hz
2432 * @freq_out: requested PLL output clock frequency in Hz
2434 * Configures and enables PLL to generate output clock based on input clock.
2436 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2437 unsigned int freq_in, unsigned int freq_out)
2439 if (codec->driver->set_pll)
2440 return codec->driver->set_pll(codec, pll_id, source,
2445 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2448 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2450 * @ratio: Ratio of BCLK to Sample rate.
2452 * Configures the DAI for a preset BCLK to sample rate ratio.
2454 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2456 if (dai->driver && dai->driver->ops->set_bclk_ratio)
2457 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2461 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2464 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2466 * @fmt: SND_SOC_DAIFMT_ format value.
2468 * Configures the DAI hardware format and clocking.
2470 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2472 if (dai->driver == NULL)
2474 if (dai->driver->ops->set_fmt == NULL)
2476 return dai->driver->ops->set_fmt(dai, fmt);
2478 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2481 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2482 * @slots: Number of slots in use.
2483 * @tx_mask: bitmask representing active TX slots.
2484 * @rx_mask: bitmask representing active RX slots.
2486 * Generates the TDM tx and rx slot default masks for DAI.
2488 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2489 unsigned int *tx_mask,
2490 unsigned int *rx_mask)
2492 if (*tx_mask || *rx_mask)
2498 *tx_mask = (1 << slots) - 1;
2499 *rx_mask = (1 << slots) - 1;
2505 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2506 * @dai: The DAI to configure
2507 * @tx_mask: bitmask representing active TX slots.
2508 * @rx_mask: bitmask representing active RX slots.
2509 * @slots: Number of slots in use.
2510 * @slot_width: Width in bits for each slot.
2512 * This function configures the specified DAI for TDM operation. @slot contains
2513 * the total number of slots of the TDM stream and @slot_with the width of each
2514 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2515 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2516 * DAI should write to or read from. If a bit is set the corresponding slot is
2517 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2518 * the first slot, bit 1 to the second slot and so on. The first active slot
2519 * maps to the first channel of the DAI, the second active slot to the second
2520 * channel and so on.
2522 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2523 * @rx_mask and @slot_width will be ignored.
2525 * Returns 0 on success, a negative error code otherwise.
2527 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2528 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2530 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
2531 dai->driver->ops->xlate_tdm_slot_mask(slots,
2532 &tx_mask, &rx_mask);
2534 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2536 dai->tx_mask = tx_mask;
2537 dai->rx_mask = rx_mask;
2539 if (dai->driver && dai->driver->ops->set_tdm_slot)
2540 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2545 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2548 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2550 * @tx_num: how many TX channels
2551 * @tx_slot: pointer to an array which imply the TX slot number channel
2553 * @rx_num: how many RX channels
2554 * @rx_slot: pointer to an array which imply the RX slot number channel
2557 * configure the relationship between channel number and TDM slot number.
2559 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2560 unsigned int tx_num, unsigned int *tx_slot,
2561 unsigned int rx_num, unsigned int *rx_slot)
2563 if (dai->driver && dai->driver->ops->set_channel_map)
2564 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2569 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2572 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2574 * @tristate: tristate enable
2576 * Tristates the DAI so that others can use it.
2578 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2580 if (dai->driver && dai->driver->ops->set_tristate)
2581 return dai->driver->ops->set_tristate(dai, tristate);
2585 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2588 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2590 * @mute: mute enable
2591 * @direction: stream to mute
2593 * Mutes the DAI DAC.
2595 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2601 if (dai->driver->ops->mute_stream)
2602 return dai->driver->ops->mute_stream(dai, mute, direction);
2603 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2604 dai->driver->ops->digital_mute)
2605 return dai->driver->ops->digital_mute(dai, mute);
2609 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2612 * snd_soc_register_card - Register a card with the ASoC core
2614 * @card: Card to register
2617 int snd_soc_register_card(struct snd_soc_card *card)
2620 struct snd_soc_pcm_runtime *rtd;
2622 if (!card->name || !card->dev)
2625 for (i = 0; i < card->num_links; i++) {
2626 struct snd_soc_dai_link *link = &card->dai_link[i];
2628 ret = soc_init_dai_link(card, link);
2630 dev_err(card->dev, "ASoC: failed to init link %s\n",
2636 dev_set_drvdata(card->dev, card);
2638 snd_soc_initialize_card_lists(card);
2640 INIT_LIST_HEAD(&card->dai_link_list);
2641 card->num_dai_links = 0;
2643 INIT_LIST_HEAD(&card->rtd_list);
2646 INIT_LIST_HEAD(&card->dapm_dirty);
2647 INIT_LIST_HEAD(&card->dobj_list);
2648 card->instantiated = 0;
2649 mutex_init(&card->mutex);
2650 mutex_init(&card->dapm_mutex);
2652 ret = snd_soc_instantiate_card(card);
2656 /* deactivate pins to sleep state */
2657 list_for_each_entry(rtd, &card->rtd_list, list) {
2658 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2661 for (j = 0; j < rtd->num_codecs; j++) {
2662 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
2663 if (!codec_dai->active)
2664 pinctrl_pm_select_sleep_state(codec_dai->dev);
2667 if (!cpu_dai->active)
2668 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2673 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2676 * snd_soc_unregister_card - Unregister a card with the ASoC core
2678 * @card: Card to unregister
2681 int snd_soc_unregister_card(struct snd_soc_card *card)
2683 if (card->instantiated) {
2684 card->instantiated = false;
2685 snd_soc_dapm_shutdown(card);
2686 soc_cleanup_card_resources(card);
2687 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
2692 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2695 * Simplify DAI link configuration by removing ".-1" from device names
2696 * and sanitizing names.
2698 static char *fmt_single_name(struct device *dev, int *id)
2700 char *found, name[NAME_SIZE];
2703 if (dev_name(dev) == NULL)
2706 strlcpy(name, dev_name(dev), NAME_SIZE);
2708 /* are we a "%s.%d" name (platform and SPI components) */
2709 found = strstr(name, dev->driver->name);
2712 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2714 /* discard ID from name if ID == -1 */
2716 found[strlen(dev->driver->name)] = '\0';
2720 /* I2C component devices are named "bus-addr" */
2721 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2722 char tmp[NAME_SIZE];
2724 /* create unique ID number from I2C addr and bus */
2725 *id = ((id1 & 0xffff) << 16) + id2;
2727 /* sanitize component name for DAI link creation */
2728 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
2729 strlcpy(name, tmp, NAME_SIZE);
2734 return kstrdup(name, GFP_KERNEL);
2738 * Simplify DAI link naming for single devices with multiple DAIs by removing
2739 * any ".-1" and using the DAI name (instead of device name).
2741 static inline char *fmt_multiple_name(struct device *dev,
2742 struct snd_soc_dai_driver *dai_drv)
2744 if (dai_drv->name == NULL) {
2746 "ASoC: error - multiple DAI %s registered with no name\n",
2751 return kstrdup(dai_drv->name, GFP_KERNEL);
2755 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2757 * @component: The component for which the DAIs should be unregistered
2759 static void snd_soc_unregister_dais(struct snd_soc_component *component)
2761 struct snd_soc_dai *dai, *_dai;
2763 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
2764 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
2766 list_del(&dai->list);
2772 /* Create a DAI and add it to the component's DAI list */
2773 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
2774 struct snd_soc_dai_driver *dai_drv,
2775 bool legacy_dai_naming)
2777 struct device *dev = component->dev;
2778 struct snd_soc_dai *dai;
2780 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
2782 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2787 * Back in the old days when we still had component-less DAIs,
2788 * instead of having a static name, component-less DAIs would
2789 * inherit the name of the parent device so it is possible to
2790 * register multiple instances of the DAI. We still need to keep
2791 * the same naming style even though those DAIs are not
2792 * component-less anymore.
2794 if (legacy_dai_naming &&
2795 (dai_drv->id == 0 || dai_drv->name == NULL)) {
2796 dai->name = fmt_single_name(dev, &dai->id);
2798 dai->name = fmt_multiple_name(dev, dai_drv);
2800 dai->id = dai_drv->id;
2802 dai->id = component->num_dai;
2804 if (dai->name == NULL) {
2809 dai->component = component;
2811 dai->driver = dai_drv;
2812 if (!dai->driver->ops)
2813 dai->driver->ops = &null_dai_ops;
2815 list_add(&dai->list, &component->dai_list);
2816 component->num_dai++;
2818 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
2823 * snd_soc_register_dais - Register a DAI with the ASoC core
2825 * @component: The component the DAIs are registered for
2826 * @dai_drv: DAI driver to use for the DAIs
2827 * @count: Number of DAIs
2828 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2831 static int snd_soc_register_dais(struct snd_soc_component *component,
2832 struct snd_soc_dai_driver *dai_drv, size_t count,
2833 bool legacy_dai_naming)
2835 struct device *dev = component->dev;
2836 struct snd_soc_dai *dai;
2840 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
2842 component->dai_drv = dai_drv;
2844 for (i = 0; i < count; i++) {
2846 dai = soc_add_dai(component, dai_drv + i,
2847 count == 1 && legacy_dai_naming);
2857 snd_soc_unregister_dais(component);
2863 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
2865 * @component: The component the DAIs are registered for
2866 * @dai_drv: DAI driver to use for the DAI
2868 * Topology can use this API to register DAIs when probing a component.
2869 * These DAIs's widgets will be freed in the card cleanup and the DAIs
2870 * will be freed in the component cleanup.
2872 int snd_soc_register_dai(struct snd_soc_component *component,
2873 struct snd_soc_dai_driver *dai_drv)
2875 struct snd_soc_dapm_context *dapm =
2876 snd_soc_component_get_dapm(component);
2877 struct snd_soc_dai *dai;
2880 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
2881 dev_err(component->dev, "Invalid dai type %d\n",
2882 dai_drv->dobj.type);
2886 lockdep_assert_held(&client_mutex);
2887 dai = soc_add_dai(component, dai_drv, false);
2891 /* Create the DAI widgets here. After adding DAIs, topology may
2892 * also add routes that need these widgets as source or sink.
2894 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
2896 dev_err(component->dev,
2897 "Failed to create DAI widgets %d\n", ret);
2902 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
2904 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
2905 enum snd_soc_dapm_type type, int subseq)
2907 struct snd_soc_component *component = dapm->component;
2909 component->driver->seq_notifier(component, type, subseq);
2912 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
2915 struct snd_soc_component *component = dapm->component;
2917 return component->driver->stream_event(component, event);
2920 static int snd_soc_component_initialize(struct snd_soc_component *component,
2921 const struct snd_soc_component_driver *driver, struct device *dev)
2923 struct snd_soc_dapm_context *dapm;
2925 component->name = fmt_single_name(dev, &component->id);
2926 if (!component->name) {
2927 dev_err(dev, "ASoC: Failed to allocate name\n");
2931 component->dev = dev;
2932 component->driver = driver;
2933 component->probe = component->driver->probe;
2934 component->remove = component->driver->remove;
2935 component->suspend = component->driver->suspend;
2936 component->resume = component->driver->resume;
2938 dapm = &component->dapm;
2940 dapm->component = component;
2941 dapm->bias_level = SND_SOC_BIAS_OFF;
2942 dapm->idle_bias_off = true;
2943 if (driver->seq_notifier)
2944 dapm->seq_notifier = snd_soc_component_seq_notifier;
2945 if (driver->stream_event)
2946 dapm->stream_event = snd_soc_component_stream_event;
2948 component->controls = driver->controls;
2949 component->num_controls = driver->num_controls;
2950 component->dapm_widgets = driver->dapm_widgets;
2951 component->num_dapm_widgets = driver->num_dapm_widgets;
2952 component->dapm_routes = driver->dapm_routes;
2953 component->num_dapm_routes = driver->num_dapm_routes;
2955 INIT_LIST_HEAD(&component->dai_list);
2956 mutex_init(&component->io_mutex);
2961 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
2963 int val_bytes = regmap_get_val_bytes(component->regmap);
2965 /* Errors are legitimate for non-integer byte multiples */
2967 component->val_bytes = val_bytes;
2970 #ifdef CONFIG_REGMAP
2973 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2974 * @component: The component for which to initialize the regmap instance
2975 * @regmap: The regmap instance that should be used by the component
2977 * This function allows deferred assignment of the regmap instance that is
2978 * associated with the component. Only use this if the regmap instance is not
2979 * yet ready when the component is registered. The function must also be called
2980 * before the first IO attempt of the component.
2982 void snd_soc_component_init_regmap(struct snd_soc_component *component,
2983 struct regmap *regmap)
2985 component->regmap = regmap;
2986 snd_soc_component_setup_regmap(component);
2988 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
2991 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2992 * @component: The component for which to de-initialize the regmap instance
2994 * Calls regmap_exit() on the regmap instance associated to the component and
2995 * removes the regmap instance from the component.
2997 * This function should only be used if snd_soc_component_init_regmap() was used
2998 * to initialize the regmap instance.
3000 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
3002 regmap_exit(component->regmap);
3003 component->regmap = NULL;
3005 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3009 static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
3011 if (!component->write && !component->read) {
3012 if (!component->regmap)
3013 component->regmap = dev_get_regmap(component->dev, NULL);
3014 if (component->regmap)
3015 snd_soc_component_setup_regmap(component);
3018 list_add(&component->list, &component_list);
3019 INIT_LIST_HEAD(&component->dobj_list);
3022 static void snd_soc_component_add(struct snd_soc_component *component)
3024 mutex_lock(&client_mutex);
3025 snd_soc_component_add_unlocked(component);
3026 mutex_unlock(&client_mutex);
3029 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3031 snd_soc_unregister_dais(component);
3032 kfree(component->name);
3035 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3037 list_del(&component->list);
3040 int snd_soc_register_component(struct device *dev,
3041 const struct snd_soc_component_driver *cmpnt_drv,
3042 struct snd_soc_dai_driver *dai_drv,
3045 struct snd_soc_component *cmpnt;
3048 cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
3050 dev_err(dev, "ASoC: Failed to allocate memory\n");
3054 ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
3058 cmpnt->ignore_pmdown_time = true;
3059 cmpnt->registered_as_component = true;
3061 ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true);
3063 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3067 snd_soc_component_add(cmpnt);
3072 snd_soc_component_cleanup(cmpnt);
3077 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3080 * snd_soc_unregister_component - Unregister a component from the ASoC core
3082 * @dev: The device to unregister
3084 void snd_soc_unregister_component(struct device *dev)
3086 struct snd_soc_component *cmpnt;
3088 mutex_lock(&client_mutex);
3089 list_for_each_entry(cmpnt, &component_list, list) {
3090 if (dev == cmpnt->dev && cmpnt->registered_as_component)
3093 mutex_unlock(&client_mutex);
3097 snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL);
3098 snd_soc_component_del_unlocked(cmpnt);
3099 mutex_unlock(&client_mutex);
3100 snd_soc_component_cleanup(cmpnt);
3103 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3105 static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
3107 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3109 return platform->driver->probe(platform);
3112 static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
3114 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3116 platform->driver->remove(platform);
3120 * snd_soc_add_platform - Add a platform to the ASoC core
3121 * @dev: The parent device for the platform
3122 * @platform: The platform to add
3123 * @platform_drv: The driver for the platform
3125 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
3126 const struct snd_soc_platform_driver *platform_drv)
3130 ret = snd_soc_component_initialize(&platform->component,
3131 &platform_drv->component_driver, dev);
3135 platform->dev = dev;
3136 platform->driver = platform_drv;
3138 if (platform_drv->probe)
3139 platform->component.probe = snd_soc_platform_drv_probe;
3140 if (platform_drv->remove)
3141 platform->component.remove = snd_soc_platform_drv_remove;
3143 #ifdef CONFIG_DEBUG_FS
3144 platform->component.debugfs_prefix = "platform";
3147 mutex_lock(&client_mutex);
3148 snd_soc_component_add_unlocked(&platform->component);
3149 list_add(&platform->list, &platform_list);
3150 mutex_unlock(&client_mutex);
3152 dev_dbg(dev, "ASoC: Registered platform '%s'\n",
3153 platform->component.name);
3157 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
3160 * snd_soc_register_platform - Register a platform with the ASoC core
3162 * @dev: The device for the platform
3163 * @platform_drv: The driver for the platform
3165 int snd_soc_register_platform(struct device *dev,
3166 const struct snd_soc_platform_driver *platform_drv)
3168 struct snd_soc_platform *platform;
3171 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3173 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3174 if (platform == NULL)
3177 ret = snd_soc_add_platform(dev, platform, platform_drv);
3183 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3186 * snd_soc_remove_platform - Remove a platform from the ASoC core
3187 * @platform: the platform to remove
3189 void snd_soc_remove_platform(struct snd_soc_platform *platform)
3192 mutex_lock(&client_mutex);
3193 list_del(&platform->list);
3194 snd_soc_component_del_unlocked(&platform->component);
3195 mutex_unlock(&client_mutex);
3197 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
3198 platform->component.name);
3200 snd_soc_component_cleanup(&platform->component);
3202 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
3204 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
3206 struct snd_soc_platform *platform;
3208 mutex_lock(&client_mutex);
3209 list_for_each_entry(platform, &platform_list, list) {
3210 if (dev == platform->dev) {
3211 mutex_unlock(&client_mutex);
3215 mutex_unlock(&client_mutex);
3219 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
3222 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3224 * @dev: platform to unregister
3226 void snd_soc_unregister_platform(struct device *dev)
3228 struct snd_soc_platform *platform;
3230 platform = snd_soc_lookup_platform(dev);
3234 snd_soc_remove_platform(platform);
3237 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3239 static u64 codec_format_map[] = {
3240 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3241 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3242 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3243 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3244 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3245 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3246 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3247 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3248 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3249 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3250 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3251 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3252 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3253 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3254 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3255 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3258 /* Fix up the DAI formats for endianness: codecs don't actually see
3259 * the endianness of the data but we're using the CPU format
3260 * definitions which do need to include endianness so we ensure that
3261 * codec DAIs always have both big and little endian variants set.
3263 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3267 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3268 if (stream->formats & codec_format_map[i])
3269 stream->formats |= codec_format_map[i];
3272 static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
3274 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3276 return codec->driver->probe(codec);
3279 static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
3281 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3283 codec->driver->remove(codec);
3286 static int snd_soc_codec_drv_suspend(struct snd_soc_component *component)
3288 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3290 return codec->driver->suspend(codec);
3293 static int snd_soc_codec_drv_resume(struct snd_soc_component *component)
3295 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3297 return codec->driver->resume(codec);
3300 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
3301 unsigned int reg, unsigned int val)
3303 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3305 return codec->driver->write(codec, reg, val);
3308 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
3309 unsigned int reg, unsigned int *val)
3311 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3313 *val = codec->driver->read(codec, reg);
3318 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
3319 enum snd_soc_bias_level level)
3321 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
3323 return codec->driver->set_bias_level(codec, level);
3327 * snd_soc_register_codec - Register a codec with the ASoC core
3329 * @dev: The parent device for this codec
3330 * @codec_drv: Codec driver
3331 * @dai_drv: The associated DAI driver
3332 * @num_dai: Number of DAIs
3334 int snd_soc_register_codec(struct device *dev,
3335 const struct snd_soc_codec_driver *codec_drv,
3336 struct snd_soc_dai_driver *dai_drv,
3339 struct snd_soc_dapm_context *dapm;
3340 struct snd_soc_codec *codec;
3341 struct snd_soc_dai *dai;
3344 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3346 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3350 codec->component.codec = codec;
3352 ret = snd_soc_component_initialize(&codec->component,
3353 &codec_drv->component_driver, dev);
3357 if (codec_drv->probe)
3358 codec->component.probe = snd_soc_codec_drv_probe;
3359 if (codec_drv->remove)
3360 codec->component.remove = snd_soc_codec_drv_remove;
3361 if (codec_drv->suspend)
3362 codec->component.suspend = snd_soc_codec_drv_suspend;
3363 if (codec_drv->resume)
3364 codec->component.resume = snd_soc_codec_drv_resume;
3365 if (codec_drv->write)
3366 codec->component.write = snd_soc_codec_drv_write;
3367 if (codec_drv->read)
3368 codec->component.read = snd_soc_codec_drv_read;
3369 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3371 dapm = snd_soc_codec_get_dapm(codec);
3372 dapm->idle_bias_off = codec_drv->idle_bias_off;
3373 dapm->suspend_bias_off = codec_drv->suspend_bias_off;
3374 if (codec_drv->seq_notifier)
3375 dapm->seq_notifier = codec_drv->seq_notifier;
3376 if (codec_drv->set_bias_level)
3377 dapm->set_bias_level = snd_soc_codec_set_bias_level;
3379 codec->driver = codec_drv;
3380 codec->component.val_bytes = codec_drv->reg_word_size;
3382 #ifdef CONFIG_DEBUG_FS
3383 codec->component.init_debugfs = soc_init_codec_debugfs;
3384 codec->component.debugfs_prefix = "codec";
3387 if (codec_drv->get_regmap)
3388 codec->component.regmap = codec_drv->get_regmap(dev);
3390 for (i = 0; i < num_dai; i++) {
3391 fixup_codec_formats(&dai_drv[i].playback);
3392 fixup_codec_formats(&dai_drv[i].capture);
3395 ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
3397 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3401 list_for_each_entry(dai, &codec->component.dai_list, list)
3404 mutex_lock(&client_mutex);
3405 snd_soc_component_add_unlocked(&codec->component);
3406 list_add(&codec->list, &codec_list);
3407 mutex_unlock(&client_mutex);
3409 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
3410 codec->component.name);
3414 snd_soc_component_cleanup(&codec->component);
3419 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3422 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3424 * @dev: codec to unregister
3426 void snd_soc_unregister_codec(struct device *dev)
3428 struct snd_soc_codec *codec;
3430 mutex_lock(&client_mutex);
3431 list_for_each_entry(codec, &codec_list, list) {
3432 if (dev == codec->dev)
3435 mutex_unlock(&client_mutex);
3439 list_del(&codec->list);
3440 snd_soc_component_del_unlocked(&codec->component);
3441 mutex_unlock(&client_mutex);
3443 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
3444 codec->component.name);
3446 snd_soc_component_cleanup(&codec->component);
3447 snd_soc_cache_exit(codec);
3450 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3452 /* Retrieve a card's name from device tree */
3453 int snd_soc_of_parse_card_name_from_node(struct snd_soc_card *card,
3454 struct device_node *np,
3455 const char *propname)
3460 pr_err("card->dev is not set before calling %s\n", __func__);
3465 np = card->dev->of_node;
3467 ret = of_property_read_string_index(np, propname, 0, &card->name);
3469 * EINVAL means the property does not exist. This is fine providing
3470 * card->name was previously set, which is checked later in
3471 * snd_soc_register_card.
3473 if (ret < 0 && ret != -EINVAL) {
3475 "ASoC: Property '%s' could not be read: %d\n",
3482 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name_from_node);
3484 static const struct snd_soc_dapm_widget simple_widgets[] = {
3485 SND_SOC_DAPM_MIC("Microphone", NULL),
3486 SND_SOC_DAPM_LINE("Line", NULL),
3487 SND_SOC_DAPM_HP("Headphone", NULL),
3488 SND_SOC_DAPM_SPK("Speaker", NULL),
3491 int snd_soc_of_parse_audio_simple_widgets_from_node(struct snd_soc_card *card,
3492 struct device_node *np,
3493 const char *propname)
3495 struct snd_soc_dapm_widget *widgets;
3496 const char *template, *wname;
3497 int i, j, num_widgets, ret;
3500 np = card->dev->of_node;
3502 num_widgets = of_property_count_strings(np, propname);
3503 if (num_widgets < 0) {
3505 "ASoC: Property '%s' does not exist\n", propname);
3508 if (num_widgets & 1) {
3510 "ASoC: Property '%s' length is not even\n", propname);
3516 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3521 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
3525 "ASoC: Could not allocate memory for widgets\n");
3529 for (i = 0; i < num_widgets; i++) {
3530 ret = of_property_read_string_index(np, propname,
3534 "ASoC: Property '%s' index %d read error:%d\n",
3535 propname, 2 * i, ret);
3539 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
3540 if (!strncmp(template, simple_widgets[j].name,
3541 strlen(simple_widgets[j].name))) {
3542 widgets[i] = simple_widgets[j];
3547 if (j >= ARRAY_SIZE(simple_widgets)) {
3549 "ASoC: DAPM widget '%s' is not supported\n",
3554 ret = of_property_read_string_index(np, propname,
3559 "ASoC: Property '%s' index %d read error:%d\n",
3560 propname, (2 * i) + 1, ret);
3564 widgets[i].name = wname;
3567 card->of_dapm_widgets = widgets;
3568 card->num_of_dapm_widgets = num_widgets;
3572 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets_from_node);
3574 static int snd_soc_of_get_slot_mask(struct device_node *np,
3575 const char *prop_name,
3579 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
3585 for (i = 0; i < val; i++)
3586 if (be32_to_cpup(&of_slot_mask[i]))
3592 int snd_soc_of_parse_tdm_slot(struct device_node *np,
3593 unsigned int *tx_mask,
3594 unsigned int *rx_mask,
3595 unsigned int *slots,
3596 unsigned int *slot_width)
3602 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
3604 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
3606 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
3607 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
3615 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
3616 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
3626 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
3628 void snd_soc_of_parse_audio_prefix_from_node(struct snd_soc_card *card,
3629 struct device_node *np,
3630 struct snd_soc_codec_conf *codec_conf,
3631 struct device_node *of_node,
3632 const char *propname)
3638 np = card->dev->of_node;
3640 ret = of_property_read_string(np, propname, &str);
3642 /* no prefix is not error */
3646 codec_conf->of_node = of_node;
3647 codec_conf->name_prefix = str;
3649 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix_from_node);
3651 int snd_soc_of_parse_audio_routing_from_node(struct snd_soc_card *card,
3652 struct device_node *np,
3653 const char *propname)
3656 struct snd_soc_dapm_route *routes;
3660 np = card->dev->of_node;
3662 num_routes = of_property_count_strings(np, propname);
3663 if (num_routes < 0 || num_routes & 1) {
3665 "ASoC: Property '%s' does not exist or its length is not even\n",
3671 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3676 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3680 "ASoC: Could not allocate DAPM route table\n");
3684 for (i = 0; i < num_routes; i++) {
3685 ret = of_property_read_string_index(np, propname,
3686 2 * i, &routes[i].sink);
3689 "ASoC: Property '%s' index %d could not be read: %d\n",
3690 propname, 2 * i, ret);
3693 ret = of_property_read_string_index(np, propname,
3694 (2 * i) + 1, &routes[i].source);
3697 "ASoC: Property '%s' index %d could not be read: %d\n",
3698 propname, (2 * i) + 1, ret);
3703 card->num_of_dapm_routes = num_routes;
3704 card->of_dapm_routes = routes;
3708 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing_from_node);
3710 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
3712 struct device_node **bitclkmaster,
3713 struct device_node **framemaster)
3717 unsigned int format = 0;
3723 } of_fmt_table[] = {
3724 { "i2s", SND_SOC_DAIFMT_I2S },
3725 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
3726 { "left_j", SND_SOC_DAIFMT_LEFT_J },
3727 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
3728 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
3729 { "ac97", SND_SOC_DAIFMT_AC97 },
3730 { "pdm", SND_SOC_DAIFMT_PDM},
3731 { "msb", SND_SOC_DAIFMT_MSB },
3732 { "lsb", SND_SOC_DAIFMT_LSB },
3739 * check "[prefix]format = xxx"
3740 * SND_SOC_DAIFMT_FORMAT_MASK area
3742 snprintf(prop, sizeof(prop), "%sformat", prefix);
3743 ret = of_property_read_string(np, prop, &str);
3745 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
3746 if (strcmp(str, of_fmt_table[i].name) == 0) {
3747 format |= of_fmt_table[i].val;
3754 * check "[prefix]continuous-clock"
3755 * SND_SOC_DAIFMT_CLOCK_MASK area
3757 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
3758 if (of_property_read_bool(np, prop))
3759 format |= SND_SOC_DAIFMT_CONT;
3761 format |= SND_SOC_DAIFMT_GATED;
3764 * check "[prefix]bitclock-inversion"
3765 * check "[prefix]frame-inversion"
3766 * SND_SOC_DAIFMT_INV_MASK area
3768 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
3769 bit = !!of_get_property(np, prop, NULL);
3771 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
3772 frame = !!of_get_property(np, prop, NULL);
3774 switch ((bit << 4) + frame) {
3776 format |= SND_SOC_DAIFMT_IB_IF;
3779 format |= SND_SOC_DAIFMT_IB_NF;
3782 format |= SND_SOC_DAIFMT_NB_IF;
3785 /* SND_SOC_DAIFMT_NB_NF is default */
3790 * check "[prefix]bitclock-master"
3791 * check "[prefix]frame-master"
3792 * SND_SOC_DAIFMT_MASTER_MASK area
3794 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
3795 bit = !!of_get_property(np, prop, NULL);
3796 if (bit && bitclkmaster)
3797 *bitclkmaster = of_parse_phandle(np, prop, 0);
3799 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
3800 frame = !!of_get_property(np, prop, NULL);
3801 if (frame && framemaster)
3802 *framemaster = of_parse_phandle(np, prop, 0);
3804 switch ((bit << 4) + frame) {
3806 format |= SND_SOC_DAIFMT_CBM_CFM;
3809 format |= SND_SOC_DAIFMT_CBM_CFS;
3812 format |= SND_SOC_DAIFMT_CBS_CFM;
3815 format |= SND_SOC_DAIFMT_CBS_CFS;
3821 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
3823 int snd_soc_get_dai_name(struct of_phandle_args *args,
3824 const char **dai_name)
3826 struct snd_soc_component *pos;
3827 struct device_node *component_of_node;
3828 int ret = -EPROBE_DEFER;
3830 mutex_lock(&client_mutex);
3831 list_for_each_entry(pos, &component_list, list) {
3832 component_of_node = pos->dev->of_node;
3833 if (!component_of_node && pos->dev->parent)
3834 component_of_node = pos->dev->parent->of_node;
3836 if (component_of_node != args->np)
3839 if (pos->driver->of_xlate_dai_name) {
3840 ret = pos->driver->of_xlate_dai_name(pos,
3846 switch (args->args_count) {
3848 id = 0; /* same as dai_drv[0] */
3858 if (id < 0 || id >= pos->num_dai) {
3865 *dai_name = pos->dai_drv[id].name;
3867 *dai_name = pos->name;
3872 mutex_unlock(&client_mutex);
3875 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
3877 int snd_soc_of_get_dai_name(struct device_node *of_node,
3878 const char **dai_name)
3880 struct of_phandle_args args;
3883 ret = of_parse_phandle_with_args(of_node, "sound-dai",
3884 "#sound-dai-cells", 0, &args);
3888 ret = snd_soc_get_dai_name(&args, dai_name);
3890 of_node_put(args.np);
3894 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
3897 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3899 * @of_node: Device node
3900 * @dai_link: DAI link
3902 * Builds an array of CODEC DAI components from the DAI link property
3904 * The array is set in the DAI link and the number of DAIs is set accordingly.
3905 * The device nodes in the array (of_node) must be dereferenced by the caller.
3907 * Returns 0 for success
3909 int snd_soc_of_get_dai_link_codecs(struct device *dev,
3910 struct device_node *of_node,
3911 struct snd_soc_dai_link *dai_link)
3913 struct of_phandle_args args;
3914 struct snd_soc_dai_link_component *component;
3916 int index, num_codecs, ret;
3918 /* Count the number of CODECs */
3920 num_codecs = of_count_phandle_with_args(of_node, name,
3921 "#sound-dai-cells");
3922 if (num_codecs <= 0) {
3923 if (num_codecs == -ENOENT)
3924 dev_err(dev, "No 'sound-dai' property\n");
3926 dev_err(dev, "Bad phandle in 'sound-dai'\n");
3929 component = devm_kzalloc(dev,
3930 sizeof *component * num_codecs,
3934 dai_link->codecs = component;
3935 dai_link->num_codecs = num_codecs;
3937 /* Parse the list */
3938 for (index = 0, component = dai_link->codecs;
3939 index < dai_link->num_codecs;
3940 index++, component++) {
3941 ret = of_parse_phandle_with_args(of_node, name,
3946 component->of_node = args.np;
3947 ret = snd_soc_get_dai_name(&args, &component->dai_name);
3953 for (index = 0, component = dai_link->codecs;
3954 index < dai_link->num_codecs;
3955 index++, component++) {
3956 if (!component->of_node)
3958 of_node_put(component->of_node);
3959 component->of_node = NULL;
3961 dai_link->codecs = NULL;
3962 dai_link->num_codecs = 0;
3965 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
3967 static int __init snd_soc_init(void)
3969 snd_soc_debugfs_init();
3970 snd_soc_util_init();
3972 return platform_driver_register(&soc_driver);
3974 module_init(snd_soc_init);
3976 static void __exit snd_soc_exit(void)
3978 snd_soc_util_exit();
3979 snd_soc_debugfs_exit();
3981 #ifdef CONFIG_DEBUG_FS
3983 platform_driver_unregister(&soc_driver);
3985 module_exit(snd_soc_exit);
3987 /* Module information */
3988 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3989 MODULE_DESCRIPTION("ALSA SoC Core");
3990 MODULE_LICENSE("GPL");
3991 MODULE_ALIAS("platform:soc-audio");