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 CODECs */
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);
708 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
713 /* If there are paths active then the CODEC will be held with
714 * bias _ON and should not be suspended. */
715 if (!codec->suspended) {
716 switch (snd_soc_dapm_get_bias_level(dapm)) {
717 case SND_SOC_BIAS_STANDBY:
719 * If the CODEC is capable of idle
720 * bias off then being in STANDBY
721 * means it's doing something,
722 * otherwise fall through.
724 if (dapm->idle_bias_off) {
726 "ASoC: idle_bias_off CODEC on over suspend\n");
730 case SND_SOC_BIAS_OFF:
731 if (codec->driver->suspend)
732 codec->driver->suspend(codec);
733 codec->suspended = 1;
734 if (codec->component.regmap)
735 regcache_mark_dirty(codec->component.regmap);
736 /* deactivate pins to sleep state */
737 pinctrl_pm_select_sleep_state(codec->dev);
741 "ASoC: CODEC is on over suspend\n");
747 list_for_each_entry(rtd, &card->rtd_list, list) {
748 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
750 if (rtd->dai_link->ignore_suspend)
753 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
754 cpu_dai->driver->suspend(cpu_dai);
756 /* deactivate pins to sleep state */
757 pinctrl_pm_select_sleep_state(cpu_dai->dev);
760 if (card->suspend_post)
761 card->suspend_post(card);
765 EXPORT_SYMBOL_GPL(snd_soc_suspend);
767 /* deferred resume work, so resume can complete before we finished
768 * setting our codec back up, which can be very slow on I2C
770 static void soc_resume_deferred(struct work_struct *work)
772 struct snd_soc_card *card =
773 container_of(work, struct snd_soc_card, deferred_resume_work);
774 struct snd_soc_pcm_runtime *rtd;
775 struct snd_soc_component *component;
778 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
779 * so userspace apps are blocked from touching us
782 dev_dbg(card->dev, "ASoC: starting resume work\n");
784 /* Bring us up into D2 so that DAPM starts enabling things */
785 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
787 if (card->resume_pre)
788 card->resume_pre(card);
790 /* resume control bus DAIs */
791 list_for_each_entry(rtd, &card->rtd_list, list) {
792 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
794 if (rtd->dai_link->ignore_suspend)
797 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
798 cpu_dai->driver->resume(cpu_dai);
801 list_for_each_entry(component, &card->component_dev_list, card_list) {
802 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
807 if (codec->suspended) {
808 if (codec->driver->resume)
809 codec->driver->resume(codec);
810 codec->suspended = 0;
814 list_for_each_entry(rtd, &card->rtd_list, list) {
816 if (rtd->dai_link->ignore_suspend)
819 snd_soc_dapm_stream_event(rtd,
820 SNDRV_PCM_STREAM_PLAYBACK,
821 SND_SOC_DAPM_STREAM_RESUME);
823 snd_soc_dapm_stream_event(rtd,
824 SNDRV_PCM_STREAM_CAPTURE,
825 SND_SOC_DAPM_STREAM_RESUME);
828 /* unmute any active DACs */
829 list_for_each_entry(rtd, &card->rtd_list, list) {
831 if (rtd->dai_link->ignore_suspend)
834 for (i = 0; i < rtd->num_codecs; i++) {
835 struct snd_soc_dai *dai = rtd->codec_dais[i];
836 struct snd_soc_dai_driver *drv = dai->driver;
838 if (drv->ops->digital_mute && dai->playback_active)
839 drv->ops->digital_mute(dai, 0);
843 list_for_each_entry(rtd, &card->rtd_list, list) {
844 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
846 if (rtd->dai_link->ignore_suspend)
849 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
850 cpu_dai->driver->resume(cpu_dai);
853 if (card->resume_post)
854 card->resume_post(card);
856 dev_dbg(card->dev, "ASoC: resume work completed\n");
858 /* Recheck all endpoints too, their state is affected by suspend */
859 dapm_mark_endpoints_dirty(card);
860 snd_soc_dapm_sync(&card->dapm);
862 /* userspace can access us now we are back as we were before */
863 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
866 /* powers up audio subsystem after a suspend */
867 int snd_soc_resume(struct device *dev)
869 struct snd_soc_card *card = dev_get_drvdata(dev);
870 bool bus_control = false;
871 struct snd_soc_pcm_runtime *rtd;
873 /* If the card is not initialized yet there is nothing to do */
874 if (!card->instantiated)
877 /* activate pins from sleep state */
878 list_for_each_entry(rtd, &card->rtd_list, list) {
879 struct snd_soc_dai **codec_dais = rtd->codec_dais;
880 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
884 pinctrl_pm_select_default_state(cpu_dai->dev);
886 for (j = 0; j < rtd->num_codecs; j++) {
887 struct snd_soc_dai *codec_dai = codec_dais[j];
888 if (codec_dai->active)
889 pinctrl_pm_select_default_state(codec_dai->dev);
894 * DAIs that also act as the control bus master might have other drivers
895 * hanging off them so need to resume immediately. Other drivers don't
896 * have that problem and may take a substantial amount of time to resume
897 * due to I/O costs and anti-pop so handle them out of line.
899 list_for_each_entry(rtd, &card->rtd_list, list) {
900 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
901 bus_control |= cpu_dai->driver->bus_control;
904 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
905 soc_resume_deferred(&card->deferred_resume_work);
907 dev_dbg(dev, "ASoC: Scheduling resume work\n");
908 if (!schedule_work(&card->deferred_resume_work))
909 dev_err(dev, "ASoC: resume work item may be lost\n");
914 EXPORT_SYMBOL_GPL(snd_soc_resume);
916 #define snd_soc_suspend NULL
917 #define snd_soc_resume NULL
920 static const struct snd_soc_dai_ops null_dai_ops = {
923 static struct snd_soc_component *soc_find_component(
924 const struct device_node *of_node, const char *name)
926 struct snd_soc_component *component;
928 lockdep_assert_held(&client_mutex);
930 list_for_each_entry(component, &component_list, list) {
932 if (component->dev->of_node == of_node)
934 } else if (strcmp(component->name, name) == 0) {
943 * snd_soc_find_dai - Find a registered DAI
945 * @dlc: name of the DAI and optional component info to match
947 * This function will search all regsitered components and their DAIs to
948 * find the DAI of the same name. The component's of_node and name
949 * should also match if being specified.
951 * Return: pointer of DAI, or NULL if not found.
953 struct snd_soc_dai *snd_soc_find_dai(
954 const struct snd_soc_dai_link_component *dlc)
956 struct snd_soc_component *component;
957 struct snd_soc_dai *dai;
958 struct device_node *component_of_node;
960 lockdep_assert_held(&client_mutex);
962 /* Find CPU DAI from registered DAIs*/
963 list_for_each_entry(component, &component_list, list) {
964 component_of_node = component->dev->of_node;
965 if (!component_of_node && component->dev->parent)
966 component_of_node = component->dev->parent->of_node;
968 if (dlc->of_node && component_of_node != dlc->of_node)
970 if (dlc->name && strcmp(component->name, dlc->name))
972 list_for_each_entry(dai, &component->dai_list, list) {
973 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
982 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
984 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
985 struct snd_soc_dai_link *dai_link)
987 struct snd_soc_pcm_runtime *rtd;
989 list_for_each_entry(rtd, &card->rtd_list, list) {
990 if (rtd->dai_link == dai_link)
997 static int soc_bind_dai_link(struct snd_soc_card *card,
998 struct snd_soc_dai_link *dai_link)
1000 struct snd_soc_pcm_runtime *rtd;
1001 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
1002 struct snd_soc_dai_link_component cpu_dai_component;
1003 struct snd_soc_dai **codec_dais;
1004 struct snd_soc_platform *platform;
1005 const char *platform_name;
1008 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
1010 if (soc_is_dai_link_bound(card, dai_link)) {
1011 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
1016 rtd = soc_new_pcm_runtime(card, dai_link);
1020 cpu_dai_component.name = dai_link->cpu_name;
1021 cpu_dai_component.of_node = dai_link->cpu_of_node;
1022 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
1023 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
1024 if (!rtd->cpu_dai) {
1025 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
1026 dai_link->cpu_dai_name);
1030 rtd->num_codecs = dai_link->num_codecs;
1032 /* Find CODEC from registered CODECs */
1033 codec_dais = rtd->codec_dais;
1034 for (i = 0; i < rtd->num_codecs; i++) {
1035 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
1036 if (!codec_dais[i]) {
1037 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
1038 codecs[i].dai_name);
1043 /* Single codec links expect codec and codec_dai in runtime data */
1044 rtd->codec_dai = codec_dais[0];
1045 rtd->codec = rtd->codec_dai->codec;
1047 /* if there's no platform we match on the empty platform */
1048 platform_name = dai_link->platform_name;
1049 if (!platform_name && !dai_link->platform_of_node)
1050 platform_name = "snd-soc-dummy";
1052 /* find one from the set of registered platforms */
1053 list_for_each_entry(platform, &platform_list, list) {
1054 if (dai_link->platform_of_node) {
1055 if (platform->dev->of_node !=
1056 dai_link->platform_of_node)
1059 if (strcmp(platform->component.name, platform_name))
1063 rtd->platform = platform;
1065 if (!rtd->platform) {
1066 dev_err(card->dev, "ASoC: platform %s not registered\n",
1067 dai_link->platform_name);
1071 soc_add_pcm_runtime(card, rtd);
1075 soc_free_pcm_runtime(rtd);
1076 return -EPROBE_DEFER;
1079 static void soc_remove_component(struct snd_soc_component *component)
1081 if (!component->card)
1084 list_del(&component->card_list);
1086 if (component->remove)
1087 component->remove(component);
1089 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
1091 soc_cleanup_component_debugfs(component);
1092 component->card = NULL;
1093 module_put(component->dev->driver->owner);
1096 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
1100 if (dai && dai->probed &&
1101 dai->driver->remove_order == order) {
1102 if (dai->driver->remove) {
1103 err = dai->driver->remove(dai);
1106 "ASoC: failed to remove %s: %d\n",
1113 static void soc_remove_link_dais(struct snd_soc_card *card,
1114 struct snd_soc_pcm_runtime *rtd, int order)
1118 /* unregister the rtd device */
1119 if (rtd->dev_registered) {
1120 device_unregister(rtd->dev);
1121 rtd->dev_registered = 0;
1124 /* remove the CODEC DAI */
1125 for (i = 0; i < rtd->num_codecs; i++)
1126 soc_remove_dai(rtd->codec_dais[i], order);
1128 soc_remove_dai(rtd->cpu_dai, order);
1131 static void soc_remove_link_components(struct snd_soc_card *card,
1132 struct snd_soc_pcm_runtime *rtd, int order)
1134 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1135 struct snd_soc_platform *platform = rtd->platform;
1136 struct snd_soc_component *component;
1139 /* remove the platform */
1140 if (platform && platform->component.driver->remove_order == order)
1141 soc_remove_component(&platform->component);
1143 /* remove the CODEC-side CODEC */
1144 for (i = 0; i < rtd->num_codecs; i++) {
1145 component = rtd->codec_dais[i]->component;
1146 if (component->driver->remove_order == order)
1147 soc_remove_component(component);
1150 /* remove any CPU-side CODEC */
1152 if (cpu_dai->component->driver->remove_order == order)
1153 soc_remove_component(cpu_dai->component);
1157 static void soc_remove_dai_links(struct snd_soc_card *card)
1160 struct snd_soc_pcm_runtime *rtd;
1161 struct snd_soc_dai_link *link, *_link;
1163 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1165 list_for_each_entry(rtd, &card->rtd_list, list)
1166 soc_remove_link_dais(card, rtd, order);
1169 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1171 list_for_each_entry(rtd, &card->rtd_list, list)
1172 soc_remove_link_components(card, rtd, order);
1175 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1176 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1177 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1180 list_del(&link->list);
1181 card->num_dai_links--;
1185 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1186 struct snd_soc_dai_link *dai_link)
1188 /* Legacy codec/codec_dai link is a single entry in multicodec */
1189 if (dai_link->codec_name || dai_link->codec_of_node ||
1190 dai_link->codec_dai_name) {
1191 dai_link->num_codecs = 1;
1193 dai_link->codecs = devm_kzalloc(card->dev,
1194 sizeof(struct snd_soc_dai_link_component),
1196 if (!dai_link->codecs)
1199 dai_link->codecs[0].name = dai_link->codec_name;
1200 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1201 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1204 if (!dai_link->codecs) {
1205 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1212 static int soc_init_dai_link(struct snd_soc_card *card,
1213 struct snd_soc_dai_link *link)
1217 ret = snd_soc_init_multicodec(card, link);
1219 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1223 for (i = 0; i < link->num_codecs; i++) {
1225 * Codec must be specified by 1 of name or OF node,
1226 * not both or neither.
1228 if (!!link->codecs[i].name ==
1229 !!link->codecs[i].of_node) {
1230 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1234 /* Codec DAI name must be specified */
1235 if (!link->codecs[i].dai_name) {
1236 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1243 * Platform may be specified by either name or OF node, but
1244 * can be left unspecified, and a dummy platform will be used.
1246 if (link->platform_name && link->platform_of_node) {
1248 "ASoC: Both platform name/of_node are set for %s\n",
1254 * CPU device may be specified by either name or OF node, but
1255 * can be left unspecified, and will be matched based on DAI
1258 if (link->cpu_name && link->cpu_of_node) {
1260 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1265 * At least one of CPU DAI name or CPU device name/node must be
1268 if (!link->cpu_dai_name &&
1269 !(link->cpu_name || link->cpu_of_node)) {
1271 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1280 * snd_soc_add_dai_link - Add a DAI link dynamically
1281 * @card: The ASoC card to which the DAI link is added
1282 * @dai_link: The new DAI link to add
1284 * This function adds a DAI link to the ASoC card's link list.
1286 * Note: Topology can use this API to add DAI links when probing the
1287 * topology component. And machine drivers can still define static
1288 * DAI links in dai_link array.
1290 int snd_soc_add_dai_link(struct snd_soc_card *card,
1291 struct snd_soc_dai_link *dai_link)
1293 if (dai_link->dobj.type
1294 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1295 dev_err(card->dev, "Invalid dai link type %d\n",
1296 dai_link->dobj.type);
1300 lockdep_assert_held(&client_mutex);
1301 /* Notify the machine driver for extra initialization
1302 * on the link created by topology.
1304 if (dai_link->dobj.type && card->add_dai_link)
1305 card->add_dai_link(card, dai_link);
1307 list_add_tail(&dai_link->list, &card->dai_link_list);
1308 card->num_dai_links++;
1312 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1315 * snd_soc_remove_dai_link - Remove a DAI link from the list
1316 * @card: The ASoC card that owns the link
1317 * @dai_link: The DAI link to remove
1319 * This function removes a DAI link from the ASoC card's link list.
1321 * For DAI links previously added by topology, topology should
1322 * remove them by using the dobj embedded in the link.
1324 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1325 struct snd_soc_dai_link *dai_link)
1327 struct snd_soc_dai_link *link, *_link;
1329 if (dai_link->dobj.type
1330 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1331 dev_err(card->dev, "Invalid dai link type %d\n",
1332 dai_link->dobj.type);
1336 lockdep_assert_held(&client_mutex);
1337 /* Notify the machine driver for extra destruction
1338 * on the link created by topology.
1340 if (dai_link->dobj.type && card->remove_dai_link)
1341 card->remove_dai_link(card, dai_link);
1343 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1344 if (link == dai_link) {
1345 list_del(&link->list);
1346 card->num_dai_links--;
1351 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1353 static void soc_set_name_prefix(struct snd_soc_card *card,
1354 struct snd_soc_component *component)
1358 if (card->codec_conf == NULL)
1361 for (i = 0; i < card->num_configs; i++) {
1362 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1363 if (map->of_node && component->dev->of_node != map->of_node)
1365 if (map->dev_name && strcmp(component->name, map->dev_name))
1367 component->name_prefix = map->name_prefix;
1372 static int soc_probe_component(struct snd_soc_card *card,
1373 struct snd_soc_component *component)
1375 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1376 struct snd_soc_dai *dai;
1379 if (!strcmp(component->name, "snd-soc-dummy"))
1382 if (component->card) {
1383 if (component->card != card) {
1384 dev_err(component->dev,
1385 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1386 card->name, component->card->name);
1392 if (!try_module_get(component->dev->driver->owner))
1395 component->card = card;
1397 soc_set_name_prefix(card, component);
1399 soc_init_component_debugfs(component);
1401 if (component->dapm_widgets) {
1402 ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets,
1403 component->num_dapm_widgets);
1406 dev_err(component->dev,
1407 "Failed to create new controls %d\n", ret);
1412 list_for_each_entry(dai, &component->dai_list, list) {
1413 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1415 dev_err(component->dev,
1416 "Failed to create DAI widgets %d\n", ret);
1421 if (component->probe) {
1422 ret = component->probe(component);
1424 dev_err(component->dev,
1425 "ASoC: failed to probe component %d\n", ret);
1429 WARN(dapm->idle_bias_off &&
1430 dapm->bias_level != SND_SOC_BIAS_OFF,
1431 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1435 /* machine specific init */
1436 if (component->init) {
1437 ret = component->init(component);
1439 dev_err(component->dev,
1440 "Failed to do machine specific init %d\n", ret);
1445 if (component->controls)
1446 snd_soc_add_component_controls(component, component->controls,
1447 component->num_controls);
1448 if (component->dapm_routes)
1449 snd_soc_dapm_add_routes(dapm, component->dapm_routes,
1450 component->num_dapm_routes);
1452 list_add(&dapm->list, &card->dapm_list);
1453 list_add(&component->card_list, &card->component_dev_list);
1458 soc_cleanup_component_debugfs(component);
1459 component->card = NULL;
1460 module_put(component->dev->driver->owner);
1465 static void rtd_release(struct device *dev)
1470 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1475 /* register the rtd device */
1476 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1479 device_initialize(rtd->dev);
1480 rtd->dev->parent = rtd->card->dev;
1481 rtd->dev->release = rtd_release;
1482 rtd->dev->groups = soc_dev_attr_groups;
1483 dev_set_name(rtd->dev, "%s", name);
1484 dev_set_drvdata(rtd->dev, rtd);
1485 mutex_init(&rtd->pcm_mutex);
1486 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1487 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1488 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1489 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1490 ret = device_add(rtd->dev);
1492 /* calling put_device() here to free the rtd->dev */
1493 put_device(rtd->dev);
1494 dev_err(rtd->card->dev,
1495 "ASoC: failed to register runtime device: %d\n", ret);
1498 rtd->dev_registered = 1;
1502 static int soc_probe_link_components(struct snd_soc_card *card,
1503 struct snd_soc_pcm_runtime *rtd,
1506 struct snd_soc_platform *platform = rtd->platform;
1507 struct snd_soc_component *component;
1510 /* probe the CPU-side component, if it is a CODEC */
1511 component = rtd->cpu_dai->component;
1512 if (component->driver->probe_order == order) {
1513 ret = soc_probe_component(card, component);
1518 /* probe the CODEC-side components */
1519 for (i = 0; i < rtd->num_codecs; i++) {
1520 component = rtd->codec_dais[i]->component;
1521 if (component->driver->probe_order == order) {
1522 ret = soc_probe_component(card, component);
1528 /* probe the platform */
1529 if (platform->component.driver->probe_order == order) {
1530 ret = soc_probe_component(card, &platform->component);
1538 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1542 if (!dai->probed && dai->driver->probe_order == order) {
1543 if (dai->driver->probe) {
1544 ret = dai->driver->probe(dai);
1547 "ASoC: failed to probe DAI %s: %d\n",
1559 static int soc_link_dai_widgets(struct snd_soc_card *card,
1560 struct snd_soc_dai_link *dai_link,
1561 struct snd_soc_pcm_runtime *rtd)
1563 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1564 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1565 struct snd_soc_dapm_widget *sink, *source;
1568 if (rtd->num_codecs > 1)
1569 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1571 /* link the DAI widgets */
1572 sink = codec_dai->playback_widget;
1573 source = cpu_dai->capture_widget;
1574 if (sink && source) {
1575 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1576 dai_link->num_params,
1579 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1580 sink->name, source->name, ret);
1585 sink = cpu_dai->playback_widget;
1586 source = codec_dai->capture_widget;
1587 if (sink && source) {
1588 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1589 dai_link->num_params,
1592 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1593 sink->name, source->name, ret);
1601 static int soc_probe_link_dais(struct snd_soc_card *card,
1602 struct snd_soc_pcm_runtime *rtd, int order)
1604 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1605 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1608 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1609 card->name, rtd->num, order);
1611 /* set default power off timeout */
1612 rtd->pmdown_time = pmdown_time;
1614 ret = soc_probe_dai(cpu_dai, order);
1618 /* probe the CODEC DAI */
1619 for (i = 0; i < rtd->num_codecs; i++) {
1620 ret = soc_probe_dai(rtd->codec_dais[i], order);
1625 /* complete DAI probe during last probe */
1626 if (order != SND_SOC_COMP_ORDER_LAST)
1629 /* do machine specific initialization */
1630 if (dai_link->init) {
1631 ret = dai_link->init(rtd);
1633 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1634 dai_link->name, ret);
1639 if (dai_link->dai_fmt)
1640 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1642 ret = soc_post_component_init(rtd, dai_link->name);
1646 #ifdef CONFIG_DEBUG_FS
1647 /* add DPCM sysfs entries */
1648 if (dai_link->dynamic)
1649 soc_dpcm_debugfs_add(rtd);
1652 if (cpu_dai->driver->compress_new) {
1653 /*create compress_device"*/
1654 ret = cpu_dai->driver->compress_new(rtd, rtd->num);
1656 dev_err(card->dev, "ASoC: can't create compress %s\n",
1657 dai_link->stream_name);
1662 if (!dai_link->params) {
1663 /* create the pcm */
1664 ret = soc_new_pcm(rtd, rtd->num);
1666 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1667 dai_link->stream_name, ret);
1671 INIT_DELAYED_WORK(&rtd->delayed_work,
1672 codec2codec_close_delayed_work);
1674 /* link the DAI widgets */
1675 ret = soc_link_dai_widgets(card, dai_link, rtd);
1684 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1686 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1687 struct snd_soc_component *component;
1689 struct device_node *codec_of_node;
1691 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1692 /* codecs, usually analog devices */
1693 name = aux_dev->codec_name;
1694 codec_of_node = aux_dev->codec_of_node;
1695 component = soc_find_component(codec_of_node, name);
1698 name = of_node_full_name(codec_of_node);
1701 } else if (aux_dev->name) {
1702 /* generic components */
1703 name = aux_dev->name;
1704 component = soc_find_component(NULL, name);
1708 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1712 component->init = aux_dev->init;
1713 list_add(&component->list_aux, &card->aux_comp_list);
1717 dev_err(card->dev, "ASoC: %s not registered\n", name);
1718 return -EPROBE_DEFER;
1721 static int soc_probe_aux_devices(struct snd_soc_card *card)
1723 struct snd_soc_component *comp;
1727 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1729 list_for_each_entry(comp, &card->aux_comp_list, list_aux) {
1730 if (comp->driver->probe_order == order) {
1731 ret = soc_probe_component(card, comp);
1734 "ASoC: failed to probe aux component %s %d\n",
1745 static void soc_remove_aux_devices(struct snd_soc_card *card)
1747 struct snd_soc_component *comp, *_comp;
1750 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1752 list_for_each_entry_safe(comp, _comp,
1753 &card->aux_comp_list, list_aux) {
1754 if (comp->driver->remove_order == order) {
1755 soc_remove_component(comp);
1756 /* remove it from the card's aux_comp_list */
1757 list_del(&comp->list_aux);
1763 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1767 if (codec->cache_init)
1770 ret = snd_soc_cache_init(codec);
1773 "ASoC: Failed to set cache compression type: %d\n",
1777 codec->cache_init = 1;
1782 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1783 * @rtd: The runtime for which the DAI link format should be changed
1784 * @dai_fmt: The new DAI link format
1786 * This function updates the DAI link format for all DAIs connected to the DAI
1787 * link for the specified runtime.
1789 * Note: For setups with a static format set the dai_fmt field in the
1790 * corresponding snd_dai_link struct instead of using this function.
1792 * Returns 0 on success, otherwise a negative error code.
1794 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1795 unsigned int dai_fmt)
1797 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1798 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1802 for (i = 0; i < rtd->num_codecs; i++) {
1803 struct snd_soc_dai *codec_dai = codec_dais[i];
1805 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1806 if (ret != 0 && ret != -ENOTSUPP) {
1807 dev_warn(codec_dai->dev,
1808 "ASoC: Failed to set DAI format: %d\n", ret);
1813 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1814 if (cpu_dai->codec) {
1815 unsigned int inv_dai_fmt;
1817 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1818 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1819 case SND_SOC_DAIFMT_CBM_CFM:
1820 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1822 case SND_SOC_DAIFMT_CBM_CFS:
1823 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1825 case SND_SOC_DAIFMT_CBS_CFM:
1826 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1828 case SND_SOC_DAIFMT_CBS_CFS:
1829 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1833 dai_fmt = inv_dai_fmt;
1836 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1837 if (ret != 0 && ret != -ENOTSUPP) {
1838 dev_warn(cpu_dai->dev,
1839 "ASoC: Failed to set DAI format: %d\n", ret);
1845 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
1847 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1849 struct snd_soc_codec *codec;
1850 struct snd_soc_pcm_runtime *rtd;
1851 struct snd_soc_dai_link *dai_link;
1854 mutex_lock(&client_mutex);
1855 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1858 for (i = 0; i < card->num_links; i++) {
1859 ret = soc_bind_dai_link(card, &card->dai_link[i]);
1864 /* bind aux_devs too */
1865 for (i = 0; i < card->num_aux_devs; i++) {
1866 ret = soc_bind_aux_dev(card, i);
1871 /* add predefined DAI links to the list */
1872 for (i = 0; i < card->num_links; i++)
1873 snd_soc_add_dai_link(card, card->dai_link+i);
1875 /* initialize the register cache for each available codec */
1876 list_for_each_entry(codec, &codec_list, list) {
1877 if (codec->cache_init)
1879 ret = snd_soc_init_codec_cache(codec);
1884 /* card bind complete so register a sound card */
1885 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1886 card->owner, 0, &card->snd_card);
1889 "ASoC: can't create sound card for card %s: %d\n",
1894 soc_init_card_debugfs(card);
1896 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1897 card->dapm.dev = card->dev;
1898 card->dapm.card = card;
1899 list_add(&card->dapm.list, &card->dapm_list);
1901 #ifdef CONFIG_DEBUG_FS
1902 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1905 #ifdef CONFIG_PM_SLEEP
1906 /* deferred resume work */
1907 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1910 if (card->dapm_widgets)
1911 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1912 card->num_dapm_widgets);
1914 if (card->of_dapm_widgets)
1915 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
1916 card->num_of_dapm_widgets);
1918 /* initialise the sound card only once */
1920 ret = card->probe(card);
1922 goto card_probe_error;
1925 /* probe all components used by DAI links on this card */
1926 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1928 list_for_each_entry(rtd, &card->rtd_list, list) {
1929 ret = soc_probe_link_components(card, rtd, order);
1932 "ASoC: failed to instantiate card %d\n",
1939 /* probe auxiliary components */
1940 ret = soc_probe_aux_devices(card);
1944 /* Find new DAI links added during probing components and bind them.
1945 * Components with topology may bring new DAIs and DAI links.
1947 list_for_each_entry(dai_link, &card->dai_link_list, list) {
1948 if (soc_is_dai_link_bound(card, dai_link))
1951 ret = soc_init_dai_link(card, dai_link);
1954 ret = soc_bind_dai_link(card, dai_link);
1959 /* probe all DAI links on this card */
1960 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1962 list_for_each_entry(rtd, &card->rtd_list, list) {
1963 ret = soc_probe_link_dais(card, rtd, order);
1966 "ASoC: failed to instantiate card %d\n",
1973 snd_soc_dapm_link_dai_widgets(card);
1974 snd_soc_dapm_connect_dai_link_widgets(card);
1977 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1979 if (card->dapm_routes)
1980 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1981 card->num_dapm_routes);
1983 if (card->of_dapm_routes)
1984 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
1985 card->num_of_dapm_routes);
1987 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1989 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1990 "%s", card->long_name ? card->long_name : card->name);
1991 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1992 "%s", card->driver_name ? card->driver_name : card->name);
1993 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1994 switch (card->snd_card->driver[i]) {
2000 if (!isalnum(card->snd_card->driver[i]))
2001 card->snd_card->driver[i] = '_';
2006 if (card->late_probe) {
2007 ret = card->late_probe(card);
2009 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2011 goto probe_aux_dev_err;
2015 snd_soc_dapm_new_widgets(card);
2017 ret = snd_card_register(card->snd_card);
2019 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2021 goto probe_aux_dev_err;
2024 card->instantiated = 1;
2025 snd_soc_dapm_sync(&card->dapm);
2026 mutex_unlock(&card->mutex);
2027 mutex_unlock(&client_mutex);
2032 soc_remove_aux_devices(card);
2035 soc_remove_dai_links(card);
2041 snd_soc_dapm_free(&card->dapm);
2042 soc_cleanup_card_debugfs(card);
2043 snd_card_free(card->snd_card);
2046 soc_remove_pcm_runtimes(card);
2047 mutex_unlock(&card->mutex);
2048 mutex_unlock(&client_mutex);
2053 /* probes a new socdev */
2054 static int soc_probe(struct platform_device *pdev)
2056 struct snd_soc_card *card = platform_get_drvdata(pdev);
2059 * no card, so machine driver should be registering card
2060 * we should not be here in that case so ret error
2065 dev_warn(&pdev->dev,
2066 "ASoC: machine %s should use snd_soc_register_card()\n",
2069 /* Bodge while we unpick instantiation */
2070 card->dev = &pdev->dev;
2072 return snd_soc_register_card(card);
2075 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2077 struct snd_soc_pcm_runtime *rtd;
2079 /* make sure any delayed work runs */
2080 list_for_each_entry(rtd, &card->rtd_list, list)
2081 flush_delayed_work(&rtd->delayed_work);
2083 /* remove and free each DAI */
2084 soc_remove_dai_links(card);
2085 soc_remove_pcm_runtimes(card);
2087 /* remove auxiliary devices */
2088 soc_remove_aux_devices(card);
2090 snd_soc_dapm_free(&card->dapm);
2091 soc_cleanup_card_debugfs(card);
2093 /* remove the card */
2097 snd_card_free(card->snd_card);
2102 /* removes a socdev */
2103 static int soc_remove(struct platform_device *pdev)
2105 struct snd_soc_card *card = platform_get_drvdata(pdev);
2107 snd_soc_unregister_card(card);
2111 int snd_soc_poweroff(struct device *dev)
2113 struct snd_soc_card *card = dev_get_drvdata(dev);
2114 struct snd_soc_pcm_runtime *rtd;
2116 if (!card->instantiated)
2119 /* Flush out pmdown_time work - we actually do want to run it
2120 * now, we're shutting down so no imminent restart. */
2121 list_for_each_entry(rtd, &card->rtd_list, list)
2122 flush_delayed_work(&rtd->delayed_work);
2124 snd_soc_dapm_shutdown(card);
2126 /* deactivate pins to sleep state */
2127 list_for_each_entry(rtd, &card->rtd_list, list) {
2128 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2131 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2132 for (i = 0; i < rtd->num_codecs; i++) {
2133 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
2134 pinctrl_pm_select_sleep_state(codec_dai->dev);
2140 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2142 const struct dev_pm_ops snd_soc_pm_ops = {
2143 .suspend = snd_soc_suspend,
2144 .resume = snd_soc_resume,
2145 .freeze = snd_soc_suspend,
2146 .thaw = snd_soc_resume,
2147 .poweroff = snd_soc_poweroff,
2148 .restore = snd_soc_resume,
2150 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2152 /* ASoC platform driver */
2153 static struct platform_driver soc_driver = {
2155 .name = "soc-audio",
2156 .pm = &snd_soc_pm_ops,
2159 .remove = soc_remove,
2163 * snd_soc_cnew - create new control
2164 * @_template: control template
2165 * @data: control private data
2166 * @long_name: control long name
2167 * @prefix: control name prefix
2169 * Create a new mixer control from a template control.
2171 * Returns 0 for success, else error.
2173 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2174 void *data, const char *long_name,
2177 struct snd_kcontrol_new template;
2178 struct snd_kcontrol *kcontrol;
2181 memcpy(&template, _template, sizeof(template));
2185 long_name = template.name;
2188 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2192 template.name = name;
2194 template.name = long_name;
2197 kcontrol = snd_ctl_new1(&template, data);
2203 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2205 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2206 const struct snd_kcontrol_new *controls, int num_controls,
2207 const char *prefix, void *data)
2211 for (i = 0; i < num_controls; i++) {
2212 const struct snd_kcontrol_new *control = &controls[i];
2213 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2214 control->name, prefix));
2216 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2217 control->name, err);
2225 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2228 struct snd_card *card = soc_card->snd_card;
2229 struct snd_kcontrol *kctl;
2231 if (unlikely(!name))
2234 list_for_each_entry(kctl, &card->controls, list)
2235 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2239 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2242 * snd_soc_add_component_controls - Add an array of controls to a component.
2244 * @component: Component to add controls to
2245 * @controls: Array of controls to add
2246 * @num_controls: Number of elements in the array
2248 * Return: 0 for success, else error.
2250 int snd_soc_add_component_controls(struct snd_soc_component *component,
2251 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2253 struct snd_card *card = component->card->snd_card;
2255 return snd_soc_add_controls(card, component->dev, controls,
2256 num_controls, component->name_prefix, component);
2258 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2261 * snd_soc_add_codec_controls - add an array of controls to a codec.
2262 * Convenience function to add a list of controls. Many codecs were
2263 * duplicating this code.
2265 * @codec: codec to add controls to
2266 * @controls: array of controls to add
2267 * @num_controls: number of elements in the array
2269 * Return 0 for success, else error.
2271 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2272 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2274 return snd_soc_add_component_controls(&codec->component, controls,
2277 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2280 * snd_soc_add_platform_controls - add an array of controls to a platform.
2281 * Convenience function to add a list of controls.
2283 * @platform: platform to add controls to
2284 * @controls: array of controls to add
2285 * @num_controls: number of elements in the array
2287 * Return 0 for success, else error.
2289 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2290 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2292 return snd_soc_add_component_controls(&platform->component, controls,
2295 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2298 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2299 * Convenience function to add a list of controls.
2301 * @soc_card: SoC card to add controls to
2302 * @controls: array of controls to add
2303 * @num_controls: number of elements in the array
2305 * Return 0 for success, else error.
2307 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2308 const struct snd_kcontrol_new *controls, int num_controls)
2310 struct snd_card *card = soc_card->snd_card;
2312 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2315 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2318 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2319 * Convienience function to add a list of controls.
2321 * @dai: DAI to add controls to
2322 * @controls: array of controls to add
2323 * @num_controls: number of elements in the array
2325 * Return 0 for success, else error.
2327 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2328 const struct snd_kcontrol_new *controls, int num_controls)
2330 struct snd_card *card = dai->component->card->snd_card;
2332 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2335 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2338 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2340 * @clk_id: DAI specific clock ID
2341 * @freq: new clock frequency in Hz
2342 * @dir: new clock direction - input/output.
2344 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2346 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2347 unsigned int freq, int dir)
2349 if (dai->driver && dai->driver->ops->set_sysclk)
2350 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2351 else if (dai->codec && dai->codec->driver->set_sysclk)
2352 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2357 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2360 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2362 * @clk_id: DAI specific clock ID
2363 * @source: Source for the clock
2364 * @freq: new clock frequency in Hz
2365 * @dir: new clock direction - input/output.
2367 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2369 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2370 int source, unsigned int freq, int dir)
2372 if (codec->driver->set_sysclk)
2373 return codec->driver->set_sysclk(codec, clk_id, source,
2378 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2381 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2383 * @div_id: DAI specific clock divider ID
2384 * @div: new clock divisor.
2386 * Configures the clock dividers. This is used to derive the best DAI bit and
2387 * frame clocks from the system or master clock. It's best to set the DAI bit
2388 * and frame clocks as low as possible to save system power.
2390 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2391 int div_id, int div)
2393 if (dai->driver && dai->driver->ops->set_clkdiv)
2394 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2398 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2401 * snd_soc_dai_set_pll - configure DAI PLL.
2403 * @pll_id: DAI specific PLL ID
2404 * @source: DAI specific source for the PLL
2405 * @freq_in: PLL input clock frequency in Hz
2406 * @freq_out: requested PLL output clock frequency in Hz
2408 * Configures and enables PLL to generate output clock based on input clock.
2410 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2411 unsigned int freq_in, unsigned int freq_out)
2413 if (dai->driver && dai->driver->ops->set_pll)
2414 return dai->driver->ops->set_pll(dai, pll_id, source,
2416 else if (dai->codec && dai->codec->driver->set_pll)
2417 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2422 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2425 * snd_soc_codec_set_pll - configure codec PLL.
2427 * @pll_id: DAI specific PLL ID
2428 * @source: DAI specific source for the PLL
2429 * @freq_in: PLL input clock frequency in Hz
2430 * @freq_out: requested PLL output clock frequency in Hz
2432 * Configures and enables PLL to generate output clock based on input clock.
2434 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2435 unsigned int freq_in, unsigned int freq_out)
2437 if (codec->driver->set_pll)
2438 return codec->driver->set_pll(codec, pll_id, source,
2443 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2446 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2448 * @ratio: Ratio of BCLK to Sample rate.
2450 * Configures the DAI for a preset BCLK to sample rate ratio.
2452 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2454 if (dai->driver && dai->driver->ops->set_bclk_ratio)
2455 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2459 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2462 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2464 * @fmt: SND_SOC_DAIFMT_ format value.
2466 * Configures the DAI hardware format and clocking.
2468 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2470 if (dai->driver == NULL)
2472 if (dai->driver->ops->set_fmt == NULL)
2474 return dai->driver->ops->set_fmt(dai, fmt);
2476 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2479 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2480 * @slots: Number of slots in use.
2481 * @tx_mask: bitmask representing active TX slots.
2482 * @rx_mask: bitmask representing active RX slots.
2484 * Generates the TDM tx and rx slot default masks for DAI.
2486 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2487 unsigned int *tx_mask,
2488 unsigned int *rx_mask)
2490 if (*tx_mask || *rx_mask)
2496 *tx_mask = (1 << slots) - 1;
2497 *rx_mask = (1 << slots) - 1;
2503 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2504 * @dai: The DAI to configure
2505 * @tx_mask: bitmask representing active TX slots.
2506 * @rx_mask: bitmask representing active RX slots.
2507 * @slots: Number of slots in use.
2508 * @slot_width: Width in bits for each slot.
2510 * This function configures the specified DAI for TDM operation. @slot contains
2511 * the total number of slots of the TDM stream and @slot_with the width of each
2512 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2513 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2514 * DAI should write to or read from. If a bit is set the corresponding slot is
2515 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2516 * the first slot, bit 1 to the second slot and so on. The first active slot
2517 * maps to the first channel of the DAI, the second active slot to the second
2518 * channel and so on.
2520 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2521 * @rx_mask and @slot_width will be ignored.
2523 * Returns 0 on success, a negative error code otherwise.
2525 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2526 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2528 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
2529 dai->driver->ops->xlate_tdm_slot_mask(slots,
2530 &tx_mask, &rx_mask);
2532 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2534 dai->tx_mask = tx_mask;
2535 dai->rx_mask = rx_mask;
2537 if (dai->driver && dai->driver->ops->set_tdm_slot)
2538 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2543 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2546 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2548 * @tx_num: how many TX channels
2549 * @tx_slot: pointer to an array which imply the TX slot number channel
2551 * @rx_num: how many RX channels
2552 * @rx_slot: pointer to an array which imply the RX slot number channel
2555 * configure the relationship between channel number and TDM slot number.
2557 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2558 unsigned int tx_num, unsigned int *tx_slot,
2559 unsigned int rx_num, unsigned int *rx_slot)
2561 if (dai->driver && dai->driver->ops->set_channel_map)
2562 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2567 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2570 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2572 * @tristate: tristate enable
2574 * Tristates the DAI so that others can use it.
2576 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2578 if (dai->driver && dai->driver->ops->set_tristate)
2579 return dai->driver->ops->set_tristate(dai, tristate);
2583 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2586 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2588 * @mute: mute enable
2589 * @direction: stream to mute
2591 * Mutes the DAI DAC.
2593 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2599 if (dai->driver->ops->mute_stream)
2600 return dai->driver->ops->mute_stream(dai, mute, direction);
2601 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2602 dai->driver->ops->digital_mute)
2603 return dai->driver->ops->digital_mute(dai, mute);
2607 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2610 * snd_soc_register_card - Register a card with the ASoC core
2612 * @card: Card to register
2615 int snd_soc_register_card(struct snd_soc_card *card)
2618 struct snd_soc_pcm_runtime *rtd;
2620 if (!card->name || !card->dev)
2623 for (i = 0; i < card->num_links; i++) {
2624 struct snd_soc_dai_link *link = &card->dai_link[i];
2626 ret = soc_init_dai_link(card, link);
2628 dev_err(card->dev, "ASoC: failed to init link %s\n",
2634 dev_set_drvdata(card->dev, card);
2636 snd_soc_initialize_card_lists(card);
2638 INIT_LIST_HEAD(&card->dai_link_list);
2639 card->num_dai_links = 0;
2641 INIT_LIST_HEAD(&card->rtd_list);
2644 INIT_LIST_HEAD(&card->dapm_dirty);
2645 INIT_LIST_HEAD(&card->dobj_list);
2646 card->instantiated = 0;
2647 mutex_init(&card->mutex);
2648 mutex_init(&card->dapm_mutex);
2650 ret = snd_soc_instantiate_card(card);
2654 /* deactivate pins to sleep state */
2655 list_for_each_entry(rtd, &card->rtd_list, list) {
2656 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2659 for (j = 0; j < rtd->num_codecs; j++) {
2660 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
2661 if (!codec_dai->active)
2662 pinctrl_pm_select_sleep_state(codec_dai->dev);
2665 if (!cpu_dai->active)
2666 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2671 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2674 * snd_soc_unregister_card - Unregister a card with the ASoC core
2676 * @card: Card to unregister
2679 int snd_soc_unregister_card(struct snd_soc_card *card)
2681 if (card->instantiated) {
2682 card->instantiated = false;
2683 snd_soc_dapm_shutdown(card);
2684 soc_cleanup_card_resources(card);
2685 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
2690 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2693 * Simplify DAI link configuration by removing ".-1" from device names
2694 * and sanitizing names.
2696 static char *fmt_single_name(struct device *dev, int *id)
2698 char *found, name[NAME_SIZE];
2701 if (dev_name(dev) == NULL)
2704 strlcpy(name, dev_name(dev), NAME_SIZE);
2706 /* are we a "%s.%d" name (platform and SPI components) */
2707 found = strstr(name, dev->driver->name);
2710 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2712 /* discard ID from name if ID == -1 */
2714 found[strlen(dev->driver->name)] = '\0';
2718 /* I2C component devices are named "bus-addr" */
2719 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2720 char tmp[NAME_SIZE];
2722 /* create unique ID number from I2C addr and bus */
2723 *id = ((id1 & 0xffff) << 16) + id2;
2725 /* sanitize component name for DAI link creation */
2726 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
2727 strlcpy(name, tmp, NAME_SIZE);
2732 return kstrdup(name, GFP_KERNEL);
2736 * Simplify DAI link naming for single devices with multiple DAIs by removing
2737 * any ".-1" and using the DAI name (instead of device name).
2739 static inline char *fmt_multiple_name(struct device *dev,
2740 struct snd_soc_dai_driver *dai_drv)
2742 if (dai_drv->name == NULL) {
2744 "ASoC: error - multiple DAI %s registered with no name\n",
2749 return kstrdup(dai_drv->name, GFP_KERNEL);
2753 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2755 * @component: The component for which the DAIs should be unregistered
2757 static void snd_soc_unregister_dais(struct snd_soc_component *component)
2759 struct snd_soc_dai *dai, *_dai;
2761 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
2762 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
2764 list_del(&dai->list);
2770 /* Create a DAI and add it to the component's DAI list */
2771 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
2772 struct snd_soc_dai_driver *dai_drv,
2773 bool legacy_dai_naming)
2775 struct device *dev = component->dev;
2776 struct snd_soc_dai *dai;
2778 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
2780 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2785 * Back in the old days when we still had component-less DAIs,
2786 * instead of having a static name, component-less DAIs would
2787 * inherit the name of the parent device so it is possible to
2788 * register multiple instances of the DAI. We still need to keep
2789 * the same naming style even though those DAIs are not
2790 * component-less anymore.
2792 if (legacy_dai_naming &&
2793 (dai_drv->id == 0 || dai_drv->name == NULL)) {
2794 dai->name = fmt_single_name(dev, &dai->id);
2796 dai->name = fmt_multiple_name(dev, dai_drv);
2798 dai->id = dai_drv->id;
2800 dai->id = component->num_dai;
2802 if (dai->name == NULL) {
2807 dai->component = component;
2809 dai->driver = dai_drv;
2810 if (!dai->driver->ops)
2811 dai->driver->ops = &null_dai_ops;
2813 list_add(&dai->list, &component->dai_list);
2814 component->num_dai++;
2816 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
2821 * snd_soc_register_dais - Register a DAI with the ASoC core
2823 * @component: The component the DAIs are registered for
2824 * @dai_drv: DAI driver to use for the DAIs
2825 * @count: Number of DAIs
2826 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2829 static int snd_soc_register_dais(struct snd_soc_component *component,
2830 struct snd_soc_dai_driver *dai_drv, size_t count,
2831 bool legacy_dai_naming)
2833 struct device *dev = component->dev;
2834 struct snd_soc_dai *dai;
2838 dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count);
2840 component->dai_drv = dai_drv;
2842 for (i = 0; i < count; i++) {
2844 dai = soc_add_dai(component, dai_drv + i,
2845 count == 1 && legacy_dai_naming);
2855 snd_soc_unregister_dais(component);
2861 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
2863 * @component: The component the DAIs are registered for
2864 * @dai_drv: DAI driver to use for the DAI
2866 * Topology can use this API to register DAIs when probing a component.
2867 * These DAIs's widgets will be freed in the card cleanup and the DAIs
2868 * will be freed in the component cleanup.
2870 int snd_soc_register_dai(struct snd_soc_component *component,
2871 struct snd_soc_dai_driver *dai_drv)
2873 struct snd_soc_dapm_context *dapm =
2874 snd_soc_component_get_dapm(component);
2875 struct snd_soc_dai *dai;
2878 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
2879 dev_err(component->dev, "Invalid dai type %d\n",
2880 dai_drv->dobj.type);
2884 lockdep_assert_held(&client_mutex);
2885 dai = soc_add_dai(component, dai_drv, false);
2889 /* Create the DAI widgets here. After adding DAIs, topology may
2890 * also add routes that need these widgets as source or sink.
2892 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
2894 dev_err(component->dev,
2895 "Failed to create DAI widgets %d\n", ret);
2900 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
2902 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
2903 enum snd_soc_dapm_type type, int subseq)
2905 struct snd_soc_component *component = dapm->component;
2907 component->driver->seq_notifier(component, type, subseq);
2910 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
2913 struct snd_soc_component *component = dapm->component;
2915 return component->driver->stream_event(component, event);
2918 static int snd_soc_component_initialize(struct snd_soc_component *component,
2919 const struct snd_soc_component_driver *driver, struct device *dev)
2921 struct snd_soc_dapm_context *dapm;
2923 component->name = fmt_single_name(dev, &component->id);
2924 if (!component->name) {
2925 dev_err(dev, "ASoC: Failed to allocate name\n");
2929 component->dev = dev;
2930 component->driver = driver;
2931 component->probe = component->driver->probe;
2932 component->remove = component->driver->remove;
2934 dapm = &component->dapm;
2936 dapm->component = component;
2937 dapm->bias_level = SND_SOC_BIAS_OFF;
2938 dapm->idle_bias_off = true;
2939 if (driver->seq_notifier)
2940 dapm->seq_notifier = snd_soc_component_seq_notifier;
2941 if (driver->stream_event)
2942 dapm->stream_event = snd_soc_component_stream_event;
2944 component->controls = driver->controls;
2945 component->num_controls = driver->num_controls;
2946 component->dapm_widgets = driver->dapm_widgets;
2947 component->num_dapm_widgets = driver->num_dapm_widgets;
2948 component->dapm_routes = driver->dapm_routes;
2949 component->num_dapm_routes = driver->num_dapm_routes;
2951 INIT_LIST_HEAD(&component->dai_list);
2952 mutex_init(&component->io_mutex);
2957 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
2959 int val_bytes = regmap_get_val_bytes(component->regmap);
2961 /* Errors are legitimate for non-integer byte multiples */
2963 component->val_bytes = val_bytes;
2966 #ifdef CONFIG_REGMAP
2969 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2970 * @component: The component for which to initialize the regmap instance
2971 * @regmap: The regmap instance that should be used by the component
2973 * This function allows deferred assignment of the regmap instance that is
2974 * associated with the component. Only use this if the regmap instance is not
2975 * yet ready when the component is registered. The function must also be called
2976 * before the first IO attempt of the component.
2978 void snd_soc_component_init_regmap(struct snd_soc_component *component,
2979 struct regmap *regmap)
2981 component->regmap = regmap;
2982 snd_soc_component_setup_regmap(component);
2984 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
2987 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2988 * @component: The component for which to de-initialize the regmap instance
2990 * Calls regmap_exit() on the regmap instance associated to the component and
2991 * removes the regmap instance from the component.
2993 * This function should only be used if snd_soc_component_init_regmap() was used
2994 * to initialize the regmap instance.
2996 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
2998 regmap_exit(component->regmap);
2999 component->regmap = NULL;
3001 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3005 static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
3007 if (!component->write && !component->read) {
3008 if (!component->regmap)
3009 component->regmap = dev_get_regmap(component->dev, NULL);
3010 if (component->regmap)
3011 snd_soc_component_setup_regmap(component);
3014 list_add(&component->list, &component_list);
3015 INIT_LIST_HEAD(&component->dobj_list);
3018 static void snd_soc_component_add(struct snd_soc_component *component)
3020 mutex_lock(&client_mutex);
3021 snd_soc_component_add_unlocked(component);
3022 mutex_unlock(&client_mutex);
3025 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3027 snd_soc_unregister_dais(component);
3028 kfree(component->name);
3031 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3033 list_del(&component->list);
3036 int snd_soc_register_component(struct device *dev,
3037 const struct snd_soc_component_driver *cmpnt_drv,
3038 struct snd_soc_dai_driver *dai_drv,
3041 struct snd_soc_component *cmpnt;
3044 cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
3046 dev_err(dev, "ASoC: Failed to allocate memory\n");
3050 ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
3054 cmpnt->ignore_pmdown_time = true;
3055 cmpnt->registered_as_component = true;
3057 ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true);
3059 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3063 snd_soc_component_add(cmpnt);
3068 snd_soc_component_cleanup(cmpnt);
3073 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3076 * snd_soc_unregister_component - Unregister a component from the ASoC core
3078 * @dev: The device to unregister
3080 void snd_soc_unregister_component(struct device *dev)
3082 struct snd_soc_component *cmpnt;
3084 mutex_lock(&client_mutex);
3085 list_for_each_entry(cmpnt, &component_list, list) {
3086 if (dev == cmpnt->dev && cmpnt->registered_as_component)
3089 mutex_unlock(&client_mutex);
3093 snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL);
3094 snd_soc_component_del_unlocked(cmpnt);
3095 mutex_unlock(&client_mutex);
3096 snd_soc_component_cleanup(cmpnt);
3099 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3101 static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
3103 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3105 return platform->driver->probe(platform);
3108 static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
3110 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3112 platform->driver->remove(platform);
3116 * snd_soc_add_platform - Add a platform to the ASoC core
3117 * @dev: The parent device for the platform
3118 * @platform: The platform to add
3119 * @platform_drv: The driver for the platform
3121 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
3122 const struct snd_soc_platform_driver *platform_drv)
3126 ret = snd_soc_component_initialize(&platform->component,
3127 &platform_drv->component_driver, dev);
3131 platform->dev = dev;
3132 platform->driver = platform_drv;
3134 if (platform_drv->probe)
3135 platform->component.probe = snd_soc_platform_drv_probe;
3136 if (platform_drv->remove)
3137 platform->component.remove = snd_soc_platform_drv_remove;
3139 #ifdef CONFIG_DEBUG_FS
3140 platform->component.debugfs_prefix = "platform";
3143 mutex_lock(&client_mutex);
3144 snd_soc_component_add_unlocked(&platform->component);
3145 list_add(&platform->list, &platform_list);
3146 mutex_unlock(&client_mutex);
3148 dev_dbg(dev, "ASoC: Registered platform '%s'\n",
3149 platform->component.name);
3153 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
3156 * snd_soc_register_platform - Register a platform with the ASoC core
3158 * @dev: The device for the platform
3159 * @platform_drv: The driver for the platform
3161 int snd_soc_register_platform(struct device *dev,
3162 const struct snd_soc_platform_driver *platform_drv)
3164 struct snd_soc_platform *platform;
3167 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3169 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3170 if (platform == NULL)
3173 ret = snd_soc_add_platform(dev, platform, platform_drv);
3179 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3182 * snd_soc_remove_platform - Remove a platform from the ASoC core
3183 * @platform: the platform to remove
3185 void snd_soc_remove_platform(struct snd_soc_platform *platform)
3188 mutex_lock(&client_mutex);
3189 list_del(&platform->list);
3190 snd_soc_component_del_unlocked(&platform->component);
3191 mutex_unlock(&client_mutex);
3193 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
3194 platform->component.name);
3196 snd_soc_component_cleanup(&platform->component);
3198 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
3200 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
3202 struct snd_soc_platform *platform;
3204 mutex_lock(&client_mutex);
3205 list_for_each_entry(platform, &platform_list, list) {
3206 if (dev == platform->dev) {
3207 mutex_unlock(&client_mutex);
3211 mutex_unlock(&client_mutex);
3215 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
3218 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3220 * @dev: platform to unregister
3222 void snd_soc_unregister_platform(struct device *dev)
3224 struct snd_soc_platform *platform;
3226 platform = snd_soc_lookup_platform(dev);
3230 snd_soc_remove_platform(platform);
3233 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3235 static u64 codec_format_map[] = {
3236 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3237 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3238 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3239 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3240 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3241 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3242 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3243 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3244 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3245 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3246 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3247 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3248 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3249 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3250 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3251 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3254 /* Fix up the DAI formats for endianness: codecs don't actually see
3255 * the endianness of the data but we're using the CPU format
3256 * definitions which do need to include endianness so we ensure that
3257 * codec DAIs always have both big and little endian variants set.
3259 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3263 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3264 if (stream->formats & codec_format_map[i])
3265 stream->formats |= codec_format_map[i];
3268 static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
3270 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3272 return codec->driver->probe(codec);
3275 static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
3277 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3279 codec->driver->remove(codec);
3282 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
3283 unsigned int reg, unsigned int val)
3285 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3287 return codec->driver->write(codec, reg, val);
3290 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
3291 unsigned int reg, unsigned int *val)
3293 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3295 *val = codec->driver->read(codec, reg);
3300 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
3301 enum snd_soc_bias_level level)
3303 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
3305 return codec->driver->set_bias_level(codec, level);
3309 * snd_soc_register_codec - Register a codec with the ASoC core
3311 * @dev: The parent device for this codec
3312 * @codec_drv: Codec driver
3313 * @dai_drv: The associated DAI driver
3314 * @num_dai: Number of DAIs
3316 int snd_soc_register_codec(struct device *dev,
3317 const struct snd_soc_codec_driver *codec_drv,
3318 struct snd_soc_dai_driver *dai_drv,
3321 struct snd_soc_dapm_context *dapm;
3322 struct snd_soc_codec *codec;
3323 struct snd_soc_dai *dai;
3326 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3328 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3332 codec->component.codec = codec;
3334 ret = snd_soc_component_initialize(&codec->component,
3335 &codec_drv->component_driver, dev);
3339 if (codec_drv->probe)
3340 codec->component.probe = snd_soc_codec_drv_probe;
3341 if (codec_drv->remove)
3342 codec->component.remove = snd_soc_codec_drv_remove;
3343 if (codec_drv->write)
3344 codec->component.write = snd_soc_codec_drv_write;
3345 if (codec_drv->read)
3346 codec->component.read = snd_soc_codec_drv_read;
3347 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3349 dapm = snd_soc_codec_get_dapm(codec);
3350 dapm->idle_bias_off = codec_drv->idle_bias_off;
3351 dapm->suspend_bias_off = codec_drv->suspend_bias_off;
3352 if (codec_drv->seq_notifier)
3353 dapm->seq_notifier = codec_drv->seq_notifier;
3354 if (codec_drv->set_bias_level)
3355 dapm->set_bias_level = snd_soc_codec_set_bias_level;
3357 codec->driver = codec_drv;
3358 codec->component.val_bytes = codec_drv->reg_word_size;
3360 #ifdef CONFIG_DEBUG_FS
3361 codec->component.init_debugfs = soc_init_codec_debugfs;
3362 codec->component.debugfs_prefix = "codec";
3365 if (codec_drv->get_regmap)
3366 codec->component.regmap = codec_drv->get_regmap(dev);
3368 for (i = 0; i < num_dai; i++) {
3369 fixup_codec_formats(&dai_drv[i].playback);
3370 fixup_codec_formats(&dai_drv[i].capture);
3373 ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
3375 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3379 list_for_each_entry(dai, &codec->component.dai_list, list)
3382 mutex_lock(&client_mutex);
3383 snd_soc_component_add_unlocked(&codec->component);
3384 list_add(&codec->list, &codec_list);
3385 mutex_unlock(&client_mutex);
3387 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
3388 codec->component.name);
3392 snd_soc_component_cleanup(&codec->component);
3397 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3400 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3402 * @dev: codec to unregister
3404 void snd_soc_unregister_codec(struct device *dev)
3406 struct snd_soc_codec *codec;
3408 mutex_lock(&client_mutex);
3409 list_for_each_entry(codec, &codec_list, list) {
3410 if (dev == codec->dev)
3413 mutex_unlock(&client_mutex);
3417 list_del(&codec->list);
3418 snd_soc_component_del_unlocked(&codec->component);
3419 mutex_unlock(&client_mutex);
3421 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
3422 codec->component.name);
3424 snd_soc_component_cleanup(&codec->component);
3425 snd_soc_cache_exit(codec);
3428 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3430 /* Retrieve a card's name from device tree */
3431 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3432 const char *propname)
3434 struct device_node *np;
3438 pr_err("card->dev is not set before calling %s\n", __func__);
3442 np = card->dev->of_node;
3444 ret = of_property_read_string_index(np, propname, 0, &card->name);
3446 * EINVAL means the property does not exist. This is fine providing
3447 * card->name was previously set, which is checked later in
3448 * snd_soc_register_card.
3450 if (ret < 0 && ret != -EINVAL) {
3452 "ASoC: Property '%s' could not be read: %d\n",
3459 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3461 static const struct snd_soc_dapm_widget simple_widgets[] = {
3462 SND_SOC_DAPM_MIC("Microphone", NULL),
3463 SND_SOC_DAPM_LINE("Line", NULL),
3464 SND_SOC_DAPM_HP("Headphone", NULL),
3465 SND_SOC_DAPM_SPK("Speaker", NULL),
3468 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3469 const char *propname)
3471 struct device_node *np = card->dev->of_node;
3472 struct snd_soc_dapm_widget *widgets;
3473 const char *template, *wname;
3474 int i, j, num_widgets, ret;
3476 num_widgets = of_property_count_strings(np, propname);
3477 if (num_widgets < 0) {
3479 "ASoC: Property '%s' does not exist\n", propname);
3482 if (num_widgets & 1) {
3484 "ASoC: Property '%s' length is not even\n", propname);
3490 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3495 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
3499 "ASoC: Could not allocate memory for widgets\n");
3503 for (i = 0; i < num_widgets; i++) {
3504 ret = of_property_read_string_index(np, propname,
3508 "ASoC: Property '%s' index %d read error:%d\n",
3509 propname, 2 * i, ret);
3513 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
3514 if (!strncmp(template, simple_widgets[j].name,
3515 strlen(simple_widgets[j].name))) {
3516 widgets[i] = simple_widgets[j];
3521 if (j >= ARRAY_SIZE(simple_widgets)) {
3523 "ASoC: DAPM widget '%s' is not supported\n",
3528 ret = of_property_read_string_index(np, propname,
3533 "ASoC: Property '%s' index %d read error:%d\n",
3534 propname, (2 * i) + 1, ret);
3538 widgets[i].name = wname;
3541 card->of_dapm_widgets = widgets;
3542 card->num_of_dapm_widgets = num_widgets;
3546 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
3548 static int snd_soc_of_get_slot_mask(struct device_node *np,
3549 const char *prop_name,
3553 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
3559 for (i = 0; i < val; i++)
3560 if (be32_to_cpup(&of_slot_mask[i]))
3566 int snd_soc_of_parse_tdm_slot(struct device_node *np,
3567 unsigned int *tx_mask,
3568 unsigned int *rx_mask,
3569 unsigned int *slots,
3570 unsigned int *slot_width)
3576 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
3578 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
3580 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
3581 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
3589 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
3590 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
3600 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
3602 void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card,
3603 struct snd_soc_codec_conf *codec_conf,
3604 struct device_node *of_node,
3605 const char *propname)
3607 struct device_node *np = card->dev->of_node;
3611 ret = of_property_read_string(np, propname, &str);
3613 /* no prefix is not error */
3617 codec_conf->of_node = of_node;
3618 codec_conf->name_prefix = str;
3620 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix);
3622 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3623 const char *propname)
3625 struct device_node *np = card->dev->of_node;
3627 struct snd_soc_dapm_route *routes;
3630 num_routes = of_property_count_strings(np, propname);
3631 if (num_routes < 0 || num_routes & 1) {
3633 "ASoC: Property '%s' does not exist or its length is not even\n",
3639 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3644 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3648 "ASoC: Could not allocate DAPM route table\n");
3652 for (i = 0; i < num_routes; i++) {
3653 ret = of_property_read_string_index(np, propname,
3654 2 * i, &routes[i].sink);
3657 "ASoC: Property '%s' index %d could not be read: %d\n",
3658 propname, 2 * i, ret);
3661 ret = of_property_read_string_index(np, propname,
3662 (2 * i) + 1, &routes[i].source);
3665 "ASoC: Property '%s' index %d could not be read: %d\n",
3666 propname, (2 * i) + 1, ret);
3671 card->num_of_dapm_routes = num_routes;
3672 card->of_dapm_routes = routes;
3676 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3678 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
3680 struct device_node **bitclkmaster,
3681 struct device_node **framemaster)
3685 unsigned int format = 0;
3691 } of_fmt_table[] = {
3692 { "i2s", SND_SOC_DAIFMT_I2S },
3693 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
3694 { "left_j", SND_SOC_DAIFMT_LEFT_J },
3695 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
3696 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
3697 { "ac97", SND_SOC_DAIFMT_AC97 },
3698 { "pdm", SND_SOC_DAIFMT_PDM},
3699 { "msb", SND_SOC_DAIFMT_MSB },
3700 { "lsb", SND_SOC_DAIFMT_LSB },
3707 * check "[prefix]format = xxx"
3708 * SND_SOC_DAIFMT_FORMAT_MASK area
3710 snprintf(prop, sizeof(prop), "%sformat", prefix);
3711 ret = of_property_read_string(np, prop, &str);
3713 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
3714 if (strcmp(str, of_fmt_table[i].name) == 0) {
3715 format |= of_fmt_table[i].val;
3722 * check "[prefix]continuous-clock"
3723 * SND_SOC_DAIFMT_CLOCK_MASK area
3725 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
3726 if (of_property_read_bool(np, prop))
3727 format |= SND_SOC_DAIFMT_CONT;
3729 format |= SND_SOC_DAIFMT_GATED;
3732 * check "[prefix]bitclock-inversion"
3733 * check "[prefix]frame-inversion"
3734 * SND_SOC_DAIFMT_INV_MASK area
3736 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
3737 bit = !!of_get_property(np, prop, NULL);
3739 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
3740 frame = !!of_get_property(np, prop, NULL);
3742 switch ((bit << 4) + frame) {
3744 format |= SND_SOC_DAIFMT_IB_IF;
3747 format |= SND_SOC_DAIFMT_IB_NF;
3750 format |= SND_SOC_DAIFMT_NB_IF;
3753 /* SND_SOC_DAIFMT_NB_NF is default */
3758 * check "[prefix]bitclock-master"
3759 * check "[prefix]frame-master"
3760 * SND_SOC_DAIFMT_MASTER_MASK area
3762 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
3763 bit = !!of_get_property(np, prop, NULL);
3764 if (bit && bitclkmaster)
3765 *bitclkmaster = of_parse_phandle(np, prop, 0);
3767 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
3768 frame = !!of_get_property(np, prop, NULL);
3769 if (frame && framemaster)
3770 *framemaster = of_parse_phandle(np, prop, 0);
3772 switch ((bit << 4) + frame) {
3774 format |= SND_SOC_DAIFMT_CBM_CFM;
3777 format |= SND_SOC_DAIFMT_CBM_CFS;
3780 format |= SND_SOC_DAIFMT_CBS_CFM;
3783 format |= SND_SOC_DAIFMT_CBS_CFS;
3789 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
3791 static int snd_soc_get_dai_name(struct of_phandle_args *args,
3792 const char **dai_name)
3794 struct snd_soc_component *pos;
3795 struct device_node *component_of_node;
3796 int ret = -EPROBE_DEFER;
3798 mutex_lock(&client_mutex);
3799 list_for_each_entry(pos, &component_list, list) {
3800 component_of_node = pos->dev->of_node;
3801 if (!component_of_node && pos->dev->parent)
3802 component_of_node = pos->dev->parent->of_node;
3804 if (component_of_node != args->np)
3807 if (pos->driver->of_xlate_dai_name) {
3808 ret = pos->driver->of_xlate_dai_name(pos,
3814 switch (args->args_count) {
3816 id = 0; /* same as dai_drv[0] */
3826 if (id < 0 || id >= pos->num_dai) {
3833 *dai_name = pos->dai_drv[id].name;
3835 *dai_name = pos->name;
3840 mutex_unlock(&client_mutex);
3844 int snd_soc_of_get_dai_name(struct device_node *of_node,
3845 const char **dai_name)
3847 struct of_phandle_args args;
3850 ret = of_parse_phandle_with_args(of_node, "sound-dai",
3851 "#sound-dai-cells", 0, &args);
3855 ret = snd_soc_get_dai_name(&args, dai_name);
3857 of_node_put(args.np);
3861 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
3864 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3866 * @of_node: Device node
3867 * @dai_link: DAI link
3869 * Builds an array of CODEC DAI components from the DAI link property
3871 * The array is set in the DAI link and the number of DAIs is set accordingly.
3872 * The device nodes in the array (of_node) must be dereferenced by the caller.
3874 * Returns 0 for success
3876 int snd_soc_of_get_dai_link_codecs(struct device *dev,
3877 struct device_node *of_node,
3878 struct snd_soc_dai_link *dai_link)
3880 struct of_phandle_args args;
3881 struct snd_soc_dai_link_component *component;
3883 int index, num_codecs, ret;
3885 /* Count the number of CODECs */
3887 num_codecs = of_count_phandle_with_args(of_node, name,
3888 "#sound-dai-cells");
3889 if (num_codecs <= 0) {
3890 if (num_codecs == -ENOENT)
3891 dev_err(dev, "No 'sound-dai' property\n");
3893 dev_err(dev, "Bad phandle in 'sound-dai'\n");
3896 component = devm_kzalloc(dev,
3897 sizeof *component * num_codecs,
3901 dai_link->codecs = component;
3902 dai_link->num_codecs = num_codecs;
3904 /* Parse the list */
3905 for (index = 0, component = dai_link->codecs;
3906 index < dai_link->num_codecs;
3907 index++, component++) {
3908 ret = of_parse_phandle_with_args(of_node, name,
3913 component->of_node = args.np;
3914 ret = snd_soc_get_dai_name(&args, &component->dai_name);
3920 for (index = 0, component = dai_link->codecs;
3921 index < dai_link->num_codecs;
3922 index++, component++) {
3923 if (!component->of_node)
3925 of_node_put(component->of_node);
3926 component->of_node = NULL;
3928 dai_link->codecs = NULL;
3929 dai_link->num_codecs = 0;
3932 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
3934 static int __init snd_soc_init(void)
3936 snd_soc_debugfs_init();
3937 snd_soc_util_init();
3939 return platform_driver_register(&soc_driver);
3941 module_init(snd_soc_init);
3943 static void __exit snd_soc_exit(void)
3945 snd_soc_util_exit();
3946 snd_soc_debugfs_exit();
3948 #ifdef CONFIG_DEBUG_FS
3950 platform_driver_unregister(&soc_driver);
3952 module_exit(snd_soc_exit);
3954 /* Module information */
3955 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3956 MODULE_DESCRIPTION("ALSA SoC Core");
3957 MODULE_LICENSE("GPL");
3958 MODULE_ALIAS("platform:soc-audio");