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 <linux/of_graph.h>
38 #include <linux/dmi.h>
39 #include <sound/core.h>
40 #include <sound/jack.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/soc-dpcm.h>
45 #include <sound/soc-topology.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry *snd_soc_debugfs_root;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
58 static DEFINE_MUTEX(client_mutex);
59 static LIST_HEAD(platform_list);
60 static LIST_HEAD(codec_list);
61 static LIST_HEAD(component_list);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time = 5000;
69 module_param(pmdown_time, int, 0);
70 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72 /* If a DMI filed contain strings in this blacklist (e.g.
73 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
74 * as invalid and dropped when setting the card long name from DMI info.
76 static const char * const dmi_blacklist[] = {
77 "To be filled by OEM",
83 NULL, /* terminator */
86 /* returns the minimum number of bytes needed to represent
87 * a particular given value */
88 static int min_bytes_needed(unsigned long val)
93 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
96 c = (sizeof val * 8) - c;
104 /* fill buf which is 'len' bytes with a formatted
105 * string of the form 'reg: value\n' */
106 static int format_register_str(struct snd_soc_codec *codec,
107 unsigned int reg, char *buf, size_t len)
109 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
110 int regsize = codec->driver->reg_word_size * 2;
113 /* +2 for ': ' and + 1 for '\n' */
114 if (wordsize + regsize + 2 + 1 != len)
117 sprintf(buf, "%.*x: ", wordsize, reg);
120 ret = snd_soc_read(codec, reg);
122 memset(buf, 'X', regsize);
124 sprintf(buf, "%.*x", regsize, ret);
126 /* no NUL-termination needed */
130 /* codec register dump */
131 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
132 size_t count, loff_t pos)
135 int wordsize, regsize;
140 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
141 regsize = codec->driver->reg_word_size * 2;
143 len = wordsize + regsize + 2 + 1;
145 if (!codec->driver->reg_cache_size)
148 if (codec->driver->reg_cache_step)
149 step = codec->driver->reg_cache_step;
151 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total + len >= count - 1)
157 format_register_str(codec, i, buf + total, len);
163 total = min(total, count - 1);
168 static ssize_t codec_reg_show(struct device *dev,
169 struct device_attribute *attr, char *buf)
171 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
173 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
176 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
178 static ssize_t pmdown_time_show(struct device *dev,
179 struct device_attribute *attr, char *buf)
181 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
183 return sprintf(buf, "%ld\n", rtd->pmdown_time);
186 static ssize_t pmdown_time_set(struct device *dev,
187 struct device_attribute *attr,
188 const char *buf, size_t count)
190 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
193 ret = kstrtol(buf, 10, &rtd->pmdown_time);
200 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
202 static struct attribute *soc_dev_attrs[] = {
203 &dev_attr_codec_reg.attr,
204 &dev_attr_pmdown_time.attr,
208 static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
209 struct attribute *attr, int idx)
211 struct device *dev = kobj_to_dev(kobj);
212 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
214 if (attr == &dev_attr_pmdown_time.attr)
215 return attr->mode; /* always visible */
216 return rtd->num_codecs ? attr->mode : 0; /* enabled only with codec */
219 static const struct attribute_group soc_dapm_dev_group = {
220 .attrs = soc_dapm_dev_attrs,
221 .is_visible = soc_dev_attr_is_visible,
224 static const struct attribute_group soc_dev_roup = {
225 .attrs = soc_dev_attrs,
226 .is_visible = soc_dev_attr_is_visible,
229 static const struct attribute_group *soc_dev_attr_groups[] = {
235 #ifdef CONFIG_DEBUG_FS
236 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
237 size_t count, loff_t *ppos)
240 struct snd_soc_codec *codec = file->private_data;
243 if (*ppos < 0 || !count)
246 buf = kmalloc(count, GFP_KERNEL);
250 ret = soc_codec_reg_show(codec, buf, count, *ppos);
252 if (copy_to_user(user_buf, buf, ret)) {
263 static ssize_t codec_reg_write_file(struct file *file,
264 const char __user *user_buf, size_t count, loff_t *ppos)
269 unsigned long reg, value;
270 struct snd_soc_codec *codec = file->private_data;
273 buf_size = min(count, (sizeof(buf)-1));
274 if (copy_from_user(buf, user_buf, buf_size))
278 while (*start == ' ')
280 reg = simple_strtoul(start, &start, 16);
281 while (*start == ' ')
283 ret = kstrtoul(start, 16, &value);
287 /* Userspace has been fiddling around behind the kernel's back */
288 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
290 snd_soc_write(codec, reg, value);
294 static const struct file_operations codec_reg_fops = {
296 .read = codec_reg_read_file,
297 .write = codec_reg_write_file,
298 .llseek = default_llseek,
301 static void soc_init_component_debugfs(struct snd_soc_component *component)
303 if (!component->card->debugfs_card_root)
306 if (component->debugfs_prefix) {
309 name = kasprintf(GFP_KERNEL, "%s:%s",
310 component->debugfs_prefix, component->name);
312 component->debugfs_root = debugfs_create_dir(name,
313 component->card->debugfs_card_root);
317 component->debugfs_root = debugfs_create_dir(component->name,
318 component->card->debugfs_card_root);
321 if (!component->debugfs_root) {
322 dev_warn(component->dev,
323 "ASoC: Failed to create component debugfs directory\n");
327 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
328 component->debugfs_root);
330 if (component->init_debugfs)
331 component->init_debugfs(component);
334 static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
336 debugfs_remove_recursive(component->debugfs_root);
339 static void soc_init_codec_debugfs(struct snd_soc_component *component)
341 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
342 struct dentry *debugfs_reg;
344 debugfs_reg = debugfs_create_file("codec_reg", 0644,
345 codec->component.debugfs_root,
346 codec, &codec_reg_fops);
349 "ASoC: Failed to create codec register debugfs file\n");
352 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
353 size_t count, loff_t *ppos)
355 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
356 ssize_t len, ret = 0;
357 struct snd_soc_codec *codec;
362 mutex_lock(&client_mutex);
364 list_for_each_entry(codec, &codec_list, list) {
365 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
366 codec->component.name);
369 if (ret > PAGE_SIZE) {
375 mutex_unlock(&client_mutex);
378 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
385 static const struct file_operations codec_list_fops = {
386 .read = codec_list_read_file,
387 .llseek = default_llseek,/* read accesses f_pos */
390 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
391 size_t count, loff_t *ppos)
393 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
394 ssize_t len, ret = 0;
395 struct snd_soc_component *component;
396 struct snd_soc_dai *dai;
401 mutex_lock(&client_mutex);
403 list_for_each_entry(component, &component_list, list) {
404 list_for_each_entry(dai, &component->dai_list, list) {
405 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
409 if (ret > PAGE_SIZE) {
416 mutex_unlock(&client_mutex);
418 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
425 static const struct file_operations dai_list_fops = {
426 .read = dai_list_read_file,
427 .llseek = default_llseek,/* read accesses f_pos */
430 static ssize_t platform_list_read_file(struct file *file,
431 char __user *user_buf,
432 size_t count, loff_t *ppos)
434 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
435 ssize_t len, ret = 0;
436 struct snd_soc_platform *platform;
441 mutex_lock(&client_mutex);
443 list_for_each_entry(platform, &platform_list, list) {
444 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
445 platform->component.name);
448 if (ret > PAGE_SIZE) {
454 mutex_unlock(&client_mutex);
456 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
463 static const struct file_operations platform_list_fops = {
464 .read = platform_list_read_file,
465 .llseek = default_llseek,/* read accesses f_pos */
468 static void soc_init_card_debugfs(struct snd_soc_card *card)
470 if (!snd_soc_debugfs_root)
473 card->debugfs_card_root = debugfs_create_dir(card->name,
474 snd_soc_debugfs_root);
475 if (!card->debugfs_card_root) {
477 "ASoC: Failed to create card debugfs directory\n");
481 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
482 card->debugfs_card_root,
484 if (!card->debugfs_pop_time)
486 "ASoC: Failed to create pop time debugfs file\n");
489 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
491 debugfs_remove_recursive(card->debugfs_card_root);
495 static void snd_soc_debugfs_init(void)
497 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
498 if (IS_ERR_OR_NULL(snd_soc_debugfs_root)) {
499 pr_warn("ASoC: Failed to create debugfs directory\n");
500 snd_soc_debugfs_root = NULL;
504 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
506 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
508 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
510 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
512 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
513 &platform_list_fops))
514 pr_warn("ASoC: Failed to create platform list debugfs file\n");
517 static void snd_soc_debugfs_exit(void)
519 debugfs_remove_recursive(snd_soc_debugfs_root);
524 #define soc_init_codec_debugfs NULL
526 static inline void soc_init_component_debugfs(
527 struct snd_soc_component *component)
531 static inline void soc_cleanup_component_debugfs(
532 struct snd_soc_component *component)
536 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
540 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
544 static inline void snd_soc_debugfs_init(void)
548 static inline void snd_soc_debugfs_exit(void)
554 static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime *rtd,
555 struct snd_soc_component *component)
557 struct snd_soc_rtdcom_list *rtdcom;
558 struct snd_soc_rtdcom_list *new_rtdcom;
560 for_each_rtdcom(rtd, rtdcom) {
561 /* already connected */
562 if (rtdcom->component == component)
566 new_rtdcom = kmalloc(sizeof(*new_rtdcom), GFP_KERNEL);
570 new_rtdcom->component = component;
571 INIT_LIST_HEAD(&new_rtdcom->list);
573 list_add_tail(&new_rtdcom->list, &rtd->component_list);
578 static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime *rtd)
580 struct snd_soc_rtdcom_list *rtdcom1, *rtdcom2;
582 for_each_rtdcom_safe(rtd, rtdcom1, rtdcom2)
585 INIT_LIST_HEAD(&rtd->component_list);
588 struct snd_soc_component *snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd,
589 const char *driver_name)
591 struct snd_soc_rtdcom_list *rtdcom;
593 for_each_rtdcom(rtd, rtdcom) {
594 if ((rtdcom->component->driver->name == driver_name) ||
595 strcmp(rtdcom->component->driver->name, driver_name) == 0)
596 return rtdcom->component;
602 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
603 const char *dai_link, int stream)
605 struct snd_soc_pcm_runtime *rtd;
607 list_for_each_entry(rtd, &card->rtd_list, list) {
608 if (rtd->dai_link->no_pcm &&
609 !strcmp(rtd->dai_link->name, dai_link))
610 return rtd->pcm->streams[stream].substream;
612 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
615 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
617 static const struct snd_soc_ops null_snd_soc_ops;
619 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
620 struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
622 struct snd_soc_pcm_runtime *rtd;
624 rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
628 INIT_LIST_HEAD(&rtd->component_list);
630 rtd->dai_link = dai_link;
631 if (!rtd->dai_link->ops)
632 rtd->dai_link->ops = &null_snd_soc_ops;
634 rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) *
635 dai_link->num_codecs,
637 if (!rtd->codec_dais) {
645 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
647 kfree(rtd->codec_dais);
648 snd_soc_rtdcom_del_all(rtd);
652 static void soc_add_pcm_runtime(struct snd_soc_card *card,
653 struct snd_soc_pcm_runtime *rtd)
655 list_add_tail(&rtd->list, &card->rtd_list);
656 rtd->num = card->num_rtd;
660 static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
662 struct snd_soc_pcm_runtime *rtd, *_rtd;
664 list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) {
665 list_del(&rtd->list);
666 soc_free_pcm_runtime(rtd);
672 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
673 const char *dai_link)
675 struct snd_soc_pcm_runtime *rtd;
677 list_for_each_entry(rtd, &card->rtd_list, list) {
678 if (!strcmp(rtd->dai_link->name, dai_link))
681 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
684 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
686 static void codec2codec_close_delayed_work(struct work_struct *work)
688 /* Currently nothing to do for c2c links
689 * Since c2c links are internal nodes in the DAPM graph and
690 * don't interface with the outside world or application layer
691 * we don't have to do any special handling on close.
695 #ifdef CONFIG_PM_SLEEP
696 /* powers down audio subsystem for suspend */
697 int snd_soc_suspend(struct device *dev)
699 struct snd_soc_card *card = dev_get_drvdata(dev);
700 struct snd_soc_component *component;
701 struct snd_soc_pcm_runtime *rtd;
704 /* If the card is not initialized yet there is nothing to do */
705 if (!card->instantiated)
708 /* Due to the resume being scheduled into a workqueue we could
709 * suspend before that's finished - wait for it to complete.
711 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
713 /* we're going to block userspace touching us until resume completes */
714 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
716 /* mute any active DACs */
717 list_for_each_entry(rtd, &card->rtd_list, list) {
719 if (rtd->dai_link->ignore_suspend)
722 for (i = 0; i < rtd->num_codecs; i++) {
723 struct snd_soc_dai *dai = rtd->codec_dais[i];
724 struct snd_soc_dai_driver *drv = dai->driver;
726 if (drv->ops->digital_mute && dai->playback_active)
727 drv->ops->digital_mute(dai, 1);
731 /* suspend all pcms */
732 list_for_each_entry(rtd, &card->rtd_list, list) {
733 if (rtd->dai_link->ignore_suspend)
736 snd_pcm_suspend_all(rtd->pcm);
739 if (card->suspend_pre)
740 card->suspend_pre(card);
742 list_for_each_entry(rtd, &card->rtd_list, list) {
743 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
745 if (rtd->dai_link->ignore_suspend)
748 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
749 cpu_dai->driver->suspend(cpu_dai);
752 /* close any waiting streams */
753 list_for_each_entry(rtd, &card->rtd_list, list)
754 flush_delayed_work(&rtd->delayed_work);
756 list_for_each_entry(rtd, &card->rtd_list, list) {
758 if (rtd->dai_link->ignore_suspend)
761 snd_soc_dapm_stream_event(rtd,
762 SNDRV_PCM_STREAM_PLAYBACK,
763 SND_SOC_DAPM_STREAM_SUSPEND);
765 snd_soc_dapm_stream_event(rtd,
766 SNDRV_PCM_STREAM_CAPTURE,
767 SND_SOC_DAPM_STREAM_SUSPEND);
770 /* Recheck all endpoints too, their state is affected by suspend */
771 dapm_mark_endpoints_dirty(card);
772 snd_soc_dapm_sync(&card->dapm);
774 /* suspend all COMPONENTs */
775 list_for_each_entry(component, &card->component_dev_list, card_list) {
776 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
778 /* If there are paths active then the COMPONENT will be held with
779 * bias _ON and should not be suspended. */
780 if (!component->suspended) {
781 switch (snd_soc_dapm_get_bias_level(dapm)) {
782 case SND_SOC_BIAS_STANDBY:
784 * If the COMPONENT is capable of idle
785 * bias off then being in STANDBY
786 * means it's doing something,
787 * otherwise fall through.
789 if (dapm->idle_bias_off) {
790 dev_dbg(component->dev,
791 "ASoC: idle_bias_off CODEC on over suspend\n");
795 case SND_SOC_BIAS_OFF:
796 if (component->suspend)
797 component->suspend(component);
798 component->suspended = 1;
799 if (component->regmap)
800 regcache_mark_dirty(component->regmap);
801 /* deactivate pins to sleep state */
802 pinctrl_pm_select_sleep_state(component->dev);
805 dev_dbg(component->dev,
806 "ASoC: COMPONENT is on over suspend\n");
812 list_for_each_entry(rtd, &card->rtd_list, list) {
813 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
815 if (rtd->dai_link->ignore_suspend)
818 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
819 cpu_dai->driver->suspend(cpu_dai);
821 /* deactivate pins to sleep state */
822 pinctrl_pm_select_sleep_state(cpu_dai->dev);
825 if (card->suspend_post)
826 card->suspend_post(card);
830 EXPORT_SYMBOL_GPL(snd_soc_suspend);
832 /* deferred resume work, so resume can complete before we finished
833 * setting our codec back up, which can be very slow on I2C
835 static void soc_resume_deferred(struct work_struct *work)
837 struct snd_soc_card *card =
838 container_of(work, struct snd_soc_card, deferred_resume_work);
839 struct snd_soc_pcm_runtime *rtd;
840 struct snd_soc_component *component;
843 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
844 * so userspace apps are blocked from touching us
847 dev_dbg(card->dev, "ASoC: starting resume work\n");
849 /* Bring us up into D2 so that DAPM starts enabling things */
850 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
852 if (card->resume_pre)
853 card->resume_pre(card);
855 /* resume control bus DAIs */
856 list_for_each_entry(rtd, &card->rtd_list, list) {
857 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
859 if (rtd->dai_link->ignore_suspend)
862 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
863 cpu_dai->driver->resume(cpu_dai);
866 list_for_each_entry(component, &card->component_dev_list, card_list) {
867 if (component->suspended) {
868 if (component->resume)
869 component->resume(component);
870 component->suspended = 0;
874 list_for_each_entry(rtd, &card->rtd_list, list) {
876 if (rtd->dai_link->ignore_suspend)
879 snd_soc_dapm_stream_event(rtd,
880 SNDRV_PCM_STREAM_PLAYBACK,
881 SND_SOC_DAPM_STREAM_RESUME);
883 snd_soc_dapm_stream_event(rtd,
884 SNDRV_PCM_STREAM_CAPTURE,
885 SND_SOC_DAPM_STREAM_RESUME);
888 /* unmute any active DACs */
889 list_for_each_entry(rtd, &card->rtd_list, list) {
891 if (rtd->dai_link->ignore_suspend)
894 for (i = 0; i < rtd->num_codecs; i++) {
895 struct snd_soc_dai *dai = rtd->codec_dais[i];
896 struct snd_soc_dai_driver *drv = dai->driver;
898 if (drv->ops->digital_mute && dai->playback_active)
899 drv->ops->digital_mute(dai, 0);
903 list_for_each_entry(rtd, &card->rtd_list, list) {
904 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
906 if (rtd->dai_link->ignore_suspend)
909 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
910 cpu_dai->driver->resume(cpu_dai);
913 if (card->resume_post)
914 card->resume_post(card);
916 dev_dbg(card->dev, "ASoC: resume work completed\n");
918 /* Recheck all endpoints too, their state is affected by suspend */
919 dapm_mark_endpoints_dirty(card);
920 snd_soc_dapm_sync(&card->dapm);
922 /* userspace can access us now we are back as we were before */
923 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
926 /* powers up audio subsystem after a suspend */
927 int snd_soc_resume(struct device *dev)
929 struct snd_soc_card *card = dev_get_drvdata(dev);
930 bool bus_control = false;
931 struct snd_soc_pcm_runtime *rtd;
933 /* If the card is not initialized yet there is nothing to do */
934 if (!card->instantiated)
937 /* activate pins from sleep state */
938 list_for_each_entry(rtd, &card->rtd_list, list) {
939 struct snd_soc_dai **codec_dais = rtd->codec_dais;
940 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
944 pinctrl_pm_select_default_state(cpu_dai->dev);
946 for (j = 0; j < rtd->num_codecs; j++) {
947 struct snd_soc_dai *codec_dai = codec_dais[j];
948 if (codec_dai->active)
949 pinctrl_pm_select_default_state(codec_dai->dev);
954 * DAIs that also act as the control bus master might have other drivers
955 * hanging off them so need to resume immediately. Other drivers don't
956 * have that problem and may take a substantial amount of time to resume
957 * due to I/O costs and anti-pop so handle them out of line.
959 list_for_each_entry(rtd, &card->rtd_list, list) {
960 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
961 bus_control |= cpu_dai->driver->bus_control;
964 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
965 soc_resume_deferred(&card->deferred_resume_work);
967 dev_dbg(dev, "ASoC: Scheduling resume work\n");
968 if (!schedule_work(&card->deferred_resume_work))
969 dev_err(dev, "ASoC: resume work item may be lost\n");
974 EXPORT_SYMBOL_GPL(snd_soc_resume);
976 #define snd_soc_suspend NULL
977 #define snd_soc_resume NULL
980 static const struct snd_soc_dai_ops null_dai_ops = {
983 static struct snd_soc_component *soc_find_component(
984 const struct device_node *of_node, const char *name)
986 struct snd_soc_component *component;
988 lockdep_assert_held(&client_mutex);
990 list_for_each_entry(component, &component_list, list) {
992 if (component->dev->of_node == of_node)
994 } else if (strcmp(component->name, name) == 0) {
1003 * snd_soc_find_dai - Find a registered DAI
1005 * @dlc: name of the DAI or the DAI driver and optional component info to match
1007 * This function will search all registered components and their DAIs to
1008 * find the DAI of the same name. The component's of_node and name
1009 * should also match if being specified.
1011 * Return: pointer of DAI, or NULL if not found.
1013 struct snd_soc_dai *snd_soc_find_dai(
1014 const struct snd_soc_dai_link_component *dlc)
1016 struct snd_soc_component *component;
1017 struct snd_soc_dai *dai;
1018 struct device_node *component_of_node;
1020 lockdep_assert_held(&client_mutex);
1022 /* Find CPU DAI from registered DAIs*/
1023 list_for_each_entry(component, &component_list, list) {
1024 component_of_node = component->dev->of_node;
1025 if (!component_of_node && component->dev->parent)
1026 component_of_node = component->dev->parent->of_node;
1028 if (dlc->of_node && component_of_node != dlc->of_node)
1030 if (dlc->name && strcmp(component->name, dlc->name))
1032 list_for_each_entry(dai, &component->dai_list, list) {
1033 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
1034 && (!dai->driver->name
1035 || strcmp(dai->driver->name, dlc->dai_name)))
1044 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
1048 * snd_soc_find_dai_link - Find a DAI link
1051 * @id: DAI link ID to match
1052 * @name: DAI link name to match, optional
1053 * @stream_name: DAI link stream name to match, optional
1055 * This function will search all existing DAI links of the soc card to
1056 * find the link of the same ID. Since DAI links may not have their
1057 * unique ID, so name and stream name should also match if being
1060 * Return: pointer of DAI link, or NULL if not found.
1062 struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
1063 int id, const char *name,
1064 const char *stream_name)
1066 struct snd_soc_dai_link *link, *_link;
1068 lockdep_assert_held(&client_mutex);
1070 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1074 if (name && (!link->name || strcmp(name, link->name)))
1077 if (stream_name && (!link->stream_name
1078 || strcmp(stream_name, link->stream_name)))
1086 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
1088 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
1089 struct snd_soc_dai_link *dai_link)
1091 struct snd_soc_pcm_runtime *rtd;
1093 list_for_each_entry(rtd, &card->rtd_list, list) {
1094 if (rtd->dai_link == dai_link)
1101 static int soc_bind_dai_link(struct snd_soc_card *card,
1102 struct snd_soc_dai_link *dai_link)
1104 struct snd_soc_pcm_runtime *rtd;
1105 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
1106 struct snd_soc_dai_link_component cpu_dai_component;
1107 struct snd_soc_component *component;
1108 struct snd_soc_dai **codec_dais;
1109 struct snd_soc_platform *platform;
1110 struct device_node *platform_of_node;
1111 const char *platform_name;
1114 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
1116 if (soc_is_dai_link_bound(card, dai_link)) {
1117 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
1122 rtd = soc_new_pcm_runtime(card, dai_link);
1126 cpu_dai_component.name = dai_link->cpu_name;
1127 cpu_dai_component.of_node = dai_link->cpu_of_node;
1128 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
1129 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
1130 if (!rtd->cpu_dai) {
1131 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
1132 dai_link->cpu_dai_name);
1135 snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
1137 rtd->num_codecs = dai_link->num_codecs;
1139 /* Find CODEC from registered CODECs */
1140 codec_dais = rtd->codec_dais;
1141 for (i = 0; i < rtd->num_codecs; i++) {
1142 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
1143 if (!codec_dais[i]) {
1144 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
1145 codecs[i].dai_name);
1148 snd_soc_rtdcom_add(rtd, codec_dais[i]->component);
1151 /* Single codec links expect codec and codec_dai in runtime data */
1152 rtd->codec_dai = codec_dais[0];
1153 rtd->codec = rtd->codec_dai->codec;
1155 /* if there's no platform we match on the empty platform */
1156 platform_name = dai_link->platform_name;
1157 if (!platform_name && !dai_link->platform_of_node)
1158 platform_name = "snd-soc-dummy";
1160 /* find one from the set of registered platforms */
1161 list_for_each_entry(component, &component_list, list) {
1162 platform_of_node = component->dev->of_node;
1163 if (!platform_of_node && component->dev->parent->of_node)
1164 platform_of_node = component->dev->parent->of_node;
1166 if (dai_link->platform_of_node) {
1167 if (platform_of_node != dai_link->platform_of_node)
1170 if (strcmp(component->name, platform_name))
1174 snd_soc_rtdcom_add(rtd, component);
1177 /* find one from the set of registered platforms */
1178 list_for_each_entry(platform, &platform_list, list) {
1179 platform_of_node = platform->dev->of_node;
1180 if (!platform_of_node && platform->dev->parent->of_node)
1181 platform_of_node = platform->dev->parent->of_node;
1183 if (dai_link->platform_of_node) {
1184 if (platform_of_node != dai_link->platform_of_node)
1187 if (strcmp(platform->component.name, platform_name))
1191 rtd->platform = platform;
1193 if (!rtd->platform) {
1194 dev_err(card->dev, "ASoC: platform %s not registered\n",
1195 dai_link->platform_name);
1199 soc_add_pcm_runtime(card, rtd);
1203 soc_free_pcm_runtime(rtd);
1204 return -EPROBE_DEFER;
1207 static void soc_remove_component(struct snd_soc_component *component)
1209 if (!component->card)
1212 list_del(&component->card_list);
1214 if (component->remove)
1215 component->remove(component);
1217 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
1219 soc_cleanup_component_debugfs(component);
1220 component->card = NULL;
1221 module_put(component->dev->driver->owner);
1224 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
1228 if (dai && dai->probed &&
1229 dai->driver->remove_order == order) {
1230 if (dai->driver->remove) {
1231 err = dai->driver->remove(dai);
1234 "ASoC: failed to remove %s: %d\n",
1241 static void soc_remove_link_dais(struct snd_soc_card *card,
1242 struct snd_soc_pcm_runtime *rtd, int order)
1246 /* unregister the rtd device */
1247 if (rtd->dev_registered) {
1248 device_unregister(rtd->dev);
1249 rtd->dev_registered = 0;
1252 /* remove the CODEC DAI */
1253 for (i = 0; i < rtd->num_codecs; i++)
1254 soc_remove_dai(rtd->codec_dais[i], order);
1256 soc_remove_dai(rtd->cpu_dai, order);
1259 static void soc_remove_link_components(struct snd_soc_card *card,
1260 struct snd_soc_pcm_runtime *rtd, int order)
1262 struct snd_soc_component *component;
1263 struct snd_soc_rtdcom_list *rtdcom;
1265 for_each_rtdcom(rtd, rtdcom) {
1266 component = rtdcom->component;
1268 if (component->driver->remove_order == order)
1269 soc_remove_component(component);
1273 static void soc_remove_dai_links(struct snd_soc_card *card)
1276 struct snd_soc_pcm_runtime *rtd;
1277 struct snd_soc_dai_link *link, *_link;
1279 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1281 list_for_each_entry(rtd, &card->rtd_list, list)
1282 soc_remove_link_dais(card, rtd, order);
1285 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1287 list_for_each_entry(rtd, &card->rtd_list, list)
1288 soc_remove_link_components(card, rtd, order);
1291 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1292 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1293 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1296 list_del(&link->list);
1297 card->num_dai_links--;
1301 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1302 struct snd_soc_dai_link *dai_link)
1304 /* Legacy codec/codec_dai link is a single entry in multicodec */
1305 if (dai_link->codec_name || dai_link->codec_of_node ||
1306 dai_link->codec_dai_name) {
1307 dai_link->num_codecs = 1;
1309 dai_link->codecs = devm_kzalloc(card->dev,
1310 sizeof(struct snd_soc_dai_link_component),
1312 if (!dai_link->codecs)
1315 dai_link->codecs[0].name = dai_link->codec_name;
1316 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1317 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1320 if (!dai_link->codecs) {
1321 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1328 static int soc_init_dai_link(struct snd_soc_card *card,
1329 struct snd_soc_dai_link *link)
1333 ret = snd_soc_init_multicodec(card, link);
1335 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1339 for (i = 0; i < link->num_codecs; i++) {
1341 * Codec must be specified by 1 of name or OF node,
1342 * not both or neither.
1344 if (!!link->codecs[i].name ==
1345 !!link->codecs[i].of_node) {
1346 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1350 /* Codec DAI name must be specified */
1351 if (!link->codecs[i].dai_name) {
1352 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1359 * Platform may be specified by either name or OF node, but
1360 * can be left unspecified, and a dummy platform will be used.
1362 if (link->platform_name && link->platform_of_node) {
1364 "ASoC: Both platform name/of_node are set for %s\n",
1370 * CPU device may be specified by either name or OF node, but
1371 * can be left unspecified, and will be matched based on DAI
1374 if (link->cpu_name && link->cpu_of_node) {
1376 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1381 * At least one of CPU DAI name or CPU device name/node must be
1384 if (!link->cpu_dai_name &&
1385 !(link->cpu_name || link->cpu_of_node)) {
1387 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1395 void snd_soc_disconnect_sync(struct device *dev)
1397 struct snd_soc_component *component = snd_soc_lookup_component(dev, NULL);
1399 if (!component || !component->card)
1402 snd_card_disconnect_sync(component->card->snd_card);
1404 EXPORT_SYMBOL_GPL(snd_soc_disconnect_sync);
1407 * snd_soc_add_dai_link - Add a DAI link dynamically
1408 * @card: The ASoC card to which the DAI link is added
1409 * @dai_link: The new DAI link to add
1411 * This function adds a DAI link to the ASoC card's link list.
1413 * Note: Topology can use this API to add DAI links when probing the
1414 * topology component. And machine drivers can still define static
1415 * DAI links in dai_link array.
1417 int snd_soc_add_dai_link(struct snd_soc_card *card,
1418 struct snd_soc_dai_link *dai_link)
1420 if (dai_link->dobj.type
1421 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1422 dev_err(card->dev, "Invalid dai link type %d\n",
1423 dai_link->dobj.type);
1427 lockdep_assert_held(&client_mutex);
1428 /* Notify the machine driver for extra initialization
1429 * on the link created by topology.
1431 if (dai_link->dobj.type && card->add_dai_link)
1432 card->add_dai_link(card, dai_link);
1434 list_add_tail(&dai_link->list, &card->dai_link_list);
1435 card->num_dai_links++;
1439 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1442 * snd_soc_remove_dai_link - Remove a DAI link from the list
1443 * @card: The ASoC card that owns the link
1444 * @dai_link: The DAI link to remove
1446 * This function removes a DAI link from the ASoC card's link list.
1448 * For DAI links previously added by topology, topology should
1449 * remove them by using the dobj embedded in the link.
1451 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1452 struct snd_soc_dai_link *dai_link)
1454 struct snd_soc_dai_link *link, *_link;
1456 if (dai_link->dobj.type
1457 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1458 dev_err(card->dev, "Invalid dai link type %d\n",
1459 dai_link->dobj.type);
1463 lockdep_assert_held(&client_mutex);
1464 /* Notify the machine driver for extra destruction
1465 * on the link created by topology.
1467 if (dai_link->dobj.type && card->remove_dai_link)
1468 card->remove_dai_link(card, dai_link);
1470 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1471 if (link == dai_link) {
1472 list_del(&link->list);
1473 card->num_dai_links--;
1478 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1480 static void soc_set_name_prefix(struct snd_soc_card *card,
1481 struct snd_soc_component *component)
1485 if (card->codec_conf == NULL)
1488 for (i = 0; i < card->num_configs; i++) {
1489 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1490 if (map->of_node && component->dev->of_node != map->of_node)
1492 if (map->dev_name && strcmp(component->name, map->dev_name))
1494 component->name_prefix = map->name_prefix;
1499 static int soc_probe_component(struct snd_soc_card *card,
1500 struct snd_soc_component *component)
1502 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1503 struct snd_soc_dai *dai;
1506 if (!strcmp(component->name, "snd-soc-dummy"))
1509 if (component->card) {
1510 if (component->card != card) {
1511 dev_err(component->dev,
1512 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1513 card->name, component->card->name);
1519 if (!try_module_get(component->dev->driver->owner))
1522 component->card = card;
1524 soc_set_name_prefix(card, component);
1526 soc_init_component_debugfs(component);
1528 if (component->driver->dapm_widgets) {
1529 ret = snd_soc_dapm_new_controls(dapm,
1530 component->driver->dapm_widgets,
1531 component->driver->num_dapm_widgets);
1534 dev_err(component->dev,
1535 "Failed to create new controls %d\n", ret);
1540 list_for_each_entry(dai, &component->dai_list, list) {
1541 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1543 dev_err(component->dev,
1544 "Failed to create DAI widgets %d\n", ret);
1549 if (component->probe) {
1550 ret = component->probe(component);
1552 dev_err(component->dev,
1553 "ASoC: failed to probe component %d\n", ret);
1557 WARN(dapm->idle_bias_off &&
1558 dapm->bias_level != SND_SOC_BIAS_OFF,
1559 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1563 /* machine specific init */
1564 if (component->init) {
1565 ret = component->init(component);
1567 dev_err(component->dev,
1568 "Failed to do machine specific init %d\n", ret);
1573 if (component->driver->controls)
1574 snd_soc_add_component_controls(component,
1575 component->driver->controls,
1576 component->driver->num_controls);
1577 if (component->driver->dapm_routes)
1578 snd_soc_dapm_add_routes(dapm,
1579 component->driver->dapm_routes,
1580 component->driver->num_dapm_routes);
1582 list_add(&dapm->list, &card->dapm_list);
1583 list_add(&component->card_list, &card->component_dev_list);
1588 soc_cleanup_component_debugfs(component);
1589 component->card = NULL;
1590 module_put(component->dev->driver->owner);
1595 static void rtd_release(struct device *dev)
1600 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1605 /* register the rtd device */
1606 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1609 device_initialize(rtd->dev);
1610 rtd->dev->parent = rtd->card->dev;
1611 rtd->dev->release = rtd_release;
1612 rtd->dev->groups = soc_dev_attr_groups;
1613 dev_set_name(rtd->dev, "%s", name);
1614 dev_set_drvdata(rtd->dev, rtd);
1615 mutex_init(&rtd->pcm_mutex);
1616 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1617 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1618 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1619 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1620 ret = device_add(rtd->dev);
1622 /* calling put_device() here to free the rtd->dev */
1623 put_device(rtd->dev);
1624 dev_err(rtd->card->dev,
1625 "ASoC: failed to register runtime device: %d\n", ret);
1628 rtd->dev_registered = 1;
1632 static int soc_probe_link_components(struct snd_soc_card *card,
1633 struct snd_soc_pcm_runtime *rtd,
1636 struct snd_soc_component *component;
1637 struct snd_soc_rtdcom_list *rtdcom;
1640 for_each_rtdcom(rtd, rtdcom) {
1641 component = rtdcom->component;
1643 if (component->driver->probe_order == order) {
1644 ret = soc_probe_component(card, component);
1653 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1657 if (!dai->probed && dai->driver->probe_order == order) {
1658 if (dai->driver->probe) {
1659 ret = dai->driver->probe(dai);
1662 "ASoC: failed to probe DAI %s: %d\n",
1674 static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais,
1675 struct snd_soc_pcm_runtime *rtd)
1679 for (i = 0; i < num_dais; ++i) {
1680 struct snd_soc_dai_driver *drv = dais[i]->driver;
1682 if (!rtd->dai_link->no_pcm && drv->pcm_new)
1683 ret = drv->pcm_new(rtd, dais[i]);
1685 dev_err(dais[i]->dev,
1686 "ASoC: Failed to bind %s with pcm device\n",
1695 static int soc_link_dai_widgets(struct snd_soc_card *card,
1696 struct snd_soc_dai_link *dai_link,
1697 struct snd_soc_pcm_runtime *rtd)
1699 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1700 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1701 struct snd_soc_dapm_widget *sink, *source;
1704 if (rtd->num_codecs > 1)
1705 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1707 /* link the DAI widgets */
1708 sink = codec_dai->playback_widget;
1709 source = cpu_dai->capture_widget;
1710 if (sink && source) {
1711 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1712 dai_link->num_params,
1715 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1716 sink->name, source->name, ret);
1721 sink = cpu_dai->playback_widget;
1722 source = codec_dai->capture_widget;
1723 if (sink && source) {
1724 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1725 dai_link->num_params,
1728 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1729 sink->name, source->name, ret);
1737 static int soc_probe_link_dais(struct snd_soc_card *card,
1738 struct snd_soc_pcm_runtime *rtd, int order)
1740 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1741 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1744 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1745 card->name, rtd->num, order);
1747 /* set default power off timeout */
1748 rtd->pmdown_time = pmdown_time;
1750 ret = soc_probe_dai(cpu_dai, order);
1754 /* probe the CODEC DAI */
1755 for (i = 0; i < rtd->num_codecs; i++) {
1756 ret = soc_probe_dai(rtd->codec_dais[i], order);
1761 /* complete DAI probe during last probe */
1762 if (order != SND_SOC_COMP_ORDER_LAST)
1765 /* do machine specific initialization */
1766 if (dai_link->init) {
1767 ret = dai_link->init(rtd);
1769 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1770 dai_link->name, ret);
1775 if (dai_link->dai_fmt)
1776 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1778 ret = soc_post_component_init(rtd, dai_link->name);
1782 #ifdef CONFIG_DEBUG_FS
1783 /* add DPCM sysfs entries */
1784 if (dai_link->dynamic)
1785 soc_dpcm_debugfs_add(rtd);
1788 if (cpu_dai->driver->compress_new) {
1789 /*create compress_device"*/
1790 ret = cpu_dai->driver->compress_new(rtd, rtd->num);
1792 dev_err(card->dev, "ASoC: can't create compress %s\n",
1793 dai_link->stream_name);
1798 if (!dai_link->params) {
1799 /* create the pcm */
1800 ret = soc_new_pcm(rtd, rtd->num);
1802 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1803 dai_link->stream_name, ret);
1806 ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd);
1809 ret = soc_link_dai_pcm_new(rtd->codec_dais,
1810 rtd->num_codecs, rtd);
1814 INIT_DELAYED_WORK(&rtd->delayed_work,
1815 codec2codec_close_delayed_work);
1817 /* link the DAI widgets */
1818 ret = soc_link_dai_widgets(card, dai_link, rtd);
1827 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1829 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1830 struct snd_soc_component *component;
1832 struct device_node *codec_of_node;
1834 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1835 /* codecs, usually analog devices */
1836 name = aux_dev->codec_name;
1837 codec_of_node = aux_dev->codec_of_node;
1838 component = soc_find_component(codec_of_node, name);
1841 name = of_node_full_name(codec_of_node);
1844 } else if (aux_dev->name) {
1845 /* generic components */
1846 name = aux_dev->name;
1847 component = soc_find_component(NULL, name);
1851 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1855 component->init = aux_dev->init;
1856 list_add(&component->card_aux_list, &card->aux_comp_list);
1861 dev_err(card->dev, "ASoC: %s not registered\n", name);
1862 return -EPROBE_DEFER;
1865 static int soc_probe_aux_devices(struct snd_soc_card *card)
1867 struct snd_soc_component *comp;
1871 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1873 list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) {
1874 if (comp->driver->probe_order == order) {
1875 ret = soc_probe_component(card, comp);
1878 "ASoC: failed to probe aux component %s %d\n",
1889 static void soc_remove_aux_devices(struct snd_soc_card *card)
1891 struct snd_soc_component *comp, *_comp;
1894 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1896 list_for_each_entry_safe(comp, _comp,
1897 &card->aux_comp_list, card_aux_list) {
1899 if (comp->driver->remove_order == order) {
1900 soc_remove_component(comp);
1901 /* remove it from the card's aux_comp_list */
1902 list_del(&comp->card_aux_list);
1908 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1912 if (codec->cache_init)
1915 ret = snd_soc_cache_init(codec);
1918 "ASoC: Failed to set cache compression type: %d\n",
1922 codec->cache_init = 1;
1927 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1928 * @rtd: The runtime for which the DAI link format should be changed
1929 * @dai_fmt: The new DAI link format
1931 * This function updates the DAI link format for all DAIs connected to the DAI
1932 * link for the specified runtime.
1934 * Note: For setups with a static format set the dai_fmt field in the
1935 * corresponding snd_dai_link struct instead of using this function.
1937 * Returns 0 on success, otherwise a negative error code.
1939 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1940 unsigned int dai_fmt)
1942 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1943 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1947 for (i = 0; i < rtd->num_codecs; i++) {
1948 struct snd_soc_dai *codec_dai = codec_dais[i];
1950 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1951 if (ret != 0 && ret != -ENOTSUPP) {
1952 dev_warn(codec_dai->dev,
1953 "ASoC: Failed to set DAI format: %d\n", ret);
1958 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1959 /* the component which has non_legacy_dai_naming is Codec */
1960 if (cpu_dai->codec ||
1961 cpu_dai->component->driver->non_legacy_dai_naming) {
1962 unsigned int inv_dai_fmt;
1964 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1965 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1966 case SND_SOC_DAIFMT_CBM_CFM:
1967 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1969 case SND_SOC_DAIFMT_CBM_CFS:
1970 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1972 case SND_SOC_DAIFMT_CBS_CFM:
1973 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1975 case SND_SOC_DAIFMT_CBS_CFS:
1976 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1980 dai_fmt = inv_dai_fmt;
1983 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1984 if (ret != 0 && ret != -ENOTSUPP) {
1985 dev_warn(cpu_dai->dev,
1986 "ASoC: Failed to set DAI format: %d\n", ret);
1992 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
1996 /* Trim special characters, and replace '-' with '_' since '-' is used to
1997 * separate different DMI fields in the card long name. Only number and
1998 * alphabet characters and a few separator characters are kept.
2000 static void cleanup_dmi_name(char *name)
2004 for (i = 0; name[i]; i++) {
2005 if (isalnum(name[i]) || (name[i] == '.')
2006 || (name[i] == '_'))
2007 name[j++] = name[i];
2008 else if (name[i] == '-')
2015 /* Check if a DMI field is valid, i.e. not containing any string
2016 * in the black list.
2018 static int is_dmi_valid(const char *field)
2022 while (dmi_blacklist[i]) {
2023 if (strstr(field, dmi_blacklist[i]))
2032 * snd_soc_set_dmi_name() - Register DMI names to card
2033 * @card: The card to register DMI names
2034 * @flavour: The flavour "differentiator" for the card amongst its peers.
2036 * An Intel machine driver may be used by many different devices but are
2037 * difficult for userspace to differentiate, since machine drivers ususally
2038 * use their own name as the card short name and leave the card long name
2039 * blank. To differentiate such devices and fix bugs due to lack of
2040 * device-specific configurations, this function allows DMI info to be used
2041 * as the sound card long name, in the format of
2042 * "vendor-product-version-board"
2043 * (Character '-' is used to separate different DMI fields here).
2044 * This will help the user space to load the device-specific Use Case Manager
2045 * (UCM) configurations for the card.
2047 * Possible card long names may be:
2048 * DellInc.-XPS139343-01-0310JH
2049 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
2050 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
2052 * This function also supports flavoring the card longname to provide
2053 * the extra differentiation, like "vendor-product-version-board-flavor".
2055 * We only keep number and alphabet characters and a few separator characters
2056 * in the card long name since UCM in the user space uses the card long names
2057 * as card configuration directory names and AudoConf cannot support special
2058 * charactors like SPACE.
2060 * Returns 0 on success, otherwise a negative error code.
2062 int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
2064 const char *vendor, *product, *product_version, *board;
2065 size_t longname_buf_size = sizeof(card->snd_card->longname);
2068 if (card->long_name)
2069 return 0; /* long name already set by driver or from DMI */
2071 /* make up dmi long name as: vendor.product.version.board */
2072 vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2073 if (!vendor || !is_dmi_valid(vendor)) {
2074 dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
2079 snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
2081 cleanup_dmi_name(card->dmi_longname);
2083 product = dmi_get_system_info(DMI_PRODUCT_NAME);
2084 if (product && is_dmi_valid(product)) {
2085 len = strlen(card->dmi_longname);
2086 snprintf(card->dmi_longname + len,
2087 longname_buf_size - len,
2090 len++; /* skip the separator "-" */
2091 if (len < longname_buf_size)
2092 cleanup_dmi_name(card->dmi_longname + len);
2094 /* some vendors like Lenovo may only put a self-explanatory
2095 * name in the product version field
2097 product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
2098 if (product_version && is_dmi_valid(product_version)) {
2099 len = strlen(card->dmi_longname);
2100 snprintf(card->dmi_longname + len,
2101 longname_buf_size - len,
2102 "-%s", product_version);
2105 if (len < longname_buf_size)
2106 cleanup_dmi_name(card->dmi_longname + len);
2110 board = dmi_get_system_info(DMI_BOARD_NAME);
2111 if (board && is_dmi_valid(board)) {
2112 len = strlen(card->dmi_longname);
2113 snprintf(card->dmi_longname + len,
2114 longname_buf_size - len,
2118 if (len < longname_buf_size)
2119 cleanup_dmi_name(card->dmi_longname + len);
2120 } else if (!product) {
2121 /* fall back to using legacy name */
2122 dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
2126 /* Add flavour to dmi long name */
2128 len = strlen(card->dmi_longname);
2129 snprintf(card->dmi_longname + len,
2130 longname_buf_size - len,
2134 if (len < longname_buf_size)
2135 cleanup_dmi_name(card->dmi_longname + len);
2138 /* set the card long name */
2139 card->long_name = card->dmi_longname;
2143 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name);
2144 #endif /* CONFIG_DMI */
2146 static int snd_soc_instantiate_card(struct snd_soc_card *card)
2148 struct snd_soc_codec *codec;
2149 struct snd_soc_pcm_runtime *rtd;
2150 struct snd_soc_dai_link *dai_link;
2153 mutex_lock(&client_mutex);
2154 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
2157 for (i = 0; i < card->num_links; i++) {
2158 ret = soc_bind_dai_link(card, &card->dai_link[i]);
2163 /* bind aux_devs too */
2164 for (i = 0; i < card->num_aux_devs; i++) {
2165 ret = soc_bind_aux_dev(card, i);
2170 /* add predefined DAI links to the list */
2171 for (i = 0; i < card->num_links; i++)
2172 snd_soc_add_dai_link(card, card->dai_link+i);
2174 /* initialize the register cache for each available codec */
2175 list_for_each_entry(codec, &codec_list, list) {
2176 if (codec->cache_init)
2178 ret = snd_soc_init_codec_cache(codec);
2183 /* card bind complete so register a sound card */
2184 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
2185 card->owner, 0, &card->snd_card);
2188 "ASoC: can't create sound card for card %s: %d\n",
2193 soc_init_card_debugfs(card);
2195 card->dapm.bias_level = SND_SOC_BIAS_OFF;
2196 card->dapm.dev = card->dev;
2197 card->dapm.card = card;
2198 list_add(&card->dapm.list, &card->dapm_list);
2200 #ifdef CONFIG_DEBUG_FS
2201 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
2204 #ifdef CONFIG_PM_SLEEP
2205 /* deferred resume work */
2206 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
2209 if (card->dapm_widgets)
2210 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
2211 card->num_dapm_widgets);
2213 if (card->of_dapm_widgets)
2214 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
2215 card->num_of_dapm_widgets);
2217 /* initialise the sound card only once */
2219 ret = card->probe(card);
2221 goto card_probe_error;
2224 /* probe all components used by DAI links on this card */
2225 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2227 list_for_each_entry(rtd, &card->rtd_list, list) {
2228 ret = soc_probe_link_components(card, rtd, order);
2231 "ASoC: failed to instantiate card %d\n",
2238 /* probe auxiliary components */
2239 ret = soc_probe_aux_devices(card);
2243 /* Find new DAI links added during probing components and bind them.
2244 * Components with topology may bring new DAIs and DAI links.
2246 list_for_each_entry(dai_link, &card->dai_link_list, list) {
2247 if (soc_is_dai_link_bound(card, dai_link))
2250 ret = soc_init_dai_link(card, dai_link);
2253 ret = soc_bind_dai_link(card, dai_link);
2258 /* probe all DAI links on this card */
2259 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2261 list_for_each_entry(rtd, &card->rtd_list, list) {
2262 ret = soc_probe_link_dais(card, rtd, order);
2265 "ASoC: failed to instantiate card %d\n",
2272 snd_soc_dapm_link_dai_widgets(card);
2273 snd_soc_dapm_connect_dai_link_widgets(card);
2276 snd_soc_add_card_controls(card, card->controls, card->num_controls);
2278 if (card->dapm_routes)
2279 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
2280 card->num_dapm_routes);
2282 if (card->of_dapm_routes)
2283 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
2284 card->num_of_dapm_routes);
2286 /* try to set some sane longname if DMI is available */
2287 snd_soc_set_dmi_name(card, NULL);
2289 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
2291 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
2292 "%s", card->long_name ? card->long_name : card->name);
2293 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
2294 "%s", card->driver_name ? card->driver_name : card->name);
2295 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
2296 switch (card->snd_card->driver[i]) {
2302 if (!isalnum(card->snd_card->driver[i]))
2303 card->snd_card->driver[i] = '_';
2308 if (card->late_probe) {
2309 ret = card->late_probe(card);
2311 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2313 goto probe_aux_dev_err;
2317 snd_soc_dapm_new_widgets(card);
2319 ret = snd_card_register(card->snd_card);
2321 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2323 goto probe_aux_dev_err;
2326 card->instantiated = 1;
2327 snd_soc_dapm_sync(&card->dapm);
2328 mutex_unlock(&card->mutex);
2329 mutex_unlock(&client_mutex);
2334 soc_remove_aux_devices(card);
2337 soc_remove_dai_links(card);
2343 snd_soc_dapm_free(&card->dapm);
2344 soc_cleanup_card_debugfs(card);
2345 snd_card_free(card->snd_card);
2348 soc_remove_pcm_runtimes(card);
2349 mutex_unlock(&card->mutex);
2350 mutex_unlock(&client_mutex);
2355 /* probes a new socdev */
2356 static int soc_probe(struct platform_device *pdev)
2358 struct snd_soc_card *card = platform_get_drvdata(pdev);
2361 * no card, so machine driver should be registering card
2362 * we should not be here in that case so ret error
2367 dev_warn(&pdev->dev,
2368 "ASoC: machine %s should use snd_soc_register_card()\n",
2371 /* Bodge while we unpick instantiation */
2372 card->dev = &pdev->dev;
2374 return snd_soc_register_card(card);
2377 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2379 struct snd_soc_pcm_runtime *rtd;
2381 /* make sure any delayed work runs */
2382 list_for_each_entry(rtd, &card->rtd_list, list)
2383 flush_delayed_work(&rtd->delayed_work);
2385 /* free the ALSA card at first; this syncs with pending operations */
2386 snd_card_free(card->snd_card);
2388 /* remove and free each DAI */
2389 soc_remove_dai_links(card);
2390 soc_remove_pcm_runtimes(card);
2392 /* remove auxiliary devices */
2393 soc_remove_aux_devices(card);
2395 snd_soc_dapm_free(&card->dapm);
2396 soc_cleanup_card_debugfs(card);
2398 /* remove the card */
2405 /* removes a socdev */
2406 static int soc_remove(struct platform_device *pdev)
2408 struct snd_soc_card *card = platform_get_drvdata(pdev);
2410 snd_soc_unregister_card(card);
2414 int snd_soc_poweroff(struct device *dev)
2416 struct snd_soc_card *card = dev_get_drvdata(dev);
2417 struct snd_soc_pcm_runtime *rtd;
2419 if (!card->instantiated)
2422 /* Flush out pmdown_time work - we actually do want to run it
2423 * now, we're shutting down so no imminent restart. */
2424 list_for_each_entry(rtd, &card->rtd_list, list)
2425 flush_delayed_work(&rtd->delayed_work);
2427 snd_soc_dapm_shutdown(card);
2429 /* deactivate pins to sleep state */
2430 list_for_each_entry(rtd, &card->rtd_list, list) {
2431 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2434 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2435 for (i = 0; i < rtd->num_codecs; i++) {
2436 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
2437 pinctrl_pm_select_sleep_state(codec_dai->dev);
2443 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2445 const struct dev_pm_ops snd_soc_pm_ops = {
2446 .suspend = snd_soc_suspend,
2447 .resume = snd_soc_resume,
2448 .freeze = snd_soc_suspend,
2449 .thaw = snd_soc_resume,
2450 .poweroff = snd_soc_poweroff,
2451 .restore = snd_soc_resume,
2453 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2455 /* ASoC platform driver */
2456 static struct platform_driver soc_driver = {
2458 .name = "soc-audio",
2459 .pm = &snd_soc_pm_ops,
2462 .remove = soc_remove,
2466 * snd_soc_cnew - create new control
2467 * @_template: control template
2468 * @data: control private data
2469 * @long_name: control long name
2470 * @prefix: control name prefix
2472 * Create a new mixer control from a template control.
2474 * Returns 0 for success, else error.
2476 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2477 void *data, const char *long_name,
2480 struct snd_kcontrol_new template;
2481 struct snd_kcontrol *kcontrol;
2484 memcpy(&template, _template, sizeof(template));
2488 long_name = template.name;
2491 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2495 template.name = name;
2497 template.name = long_name;
2500 kcontrol = snd_ctl_new1(&template, data);
2506 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2508 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2509 const struct snd_kcontrol_new *controls, int num_controls,
2510 const char *prefix, void *data)
2514 for (i = 0; i < num_controls; i++) {
2515 const struct snd_kcontrol_new *control = &controls[i];
2516 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2517 control->name, prefix));
2519 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2520 control->name, err);
2528 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2531 struct snd_card *card = soc_card->snd_card;
2532 struct snd_kcontrol *kctl;
2534 if (unlikely(!name))
2537 list_for_each_entry(kctl, &card->controls, list)
2538 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2542 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2545 * snd_soc_add_component_controls - Add an array of controls to a component.
2547 * @component: Component to add controls to
2548 * @controls: Array of controls to add
2549 * @num_controls: Number of elements in the array
2551 * Return: 0 for success, else error.
2553 int snd_soc_add_component_controls(struct snd_soc_component *component,
2554 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2556 struct snd_card *card = component->card->snd_card;
2558 return snd_soc_add_controls(card, component->dev, controls,
2559 num_controls, component->name_prefix, component);
2561 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2564 * snd_soc_add_codec_controls - add an array of controls to a codec.
2565 * Convenience function to add a list of controls. Many codecs were
2566 * duplicating this code.
2568 * @codec: codec to add controls to
2569 * @controls: array of controls to add
2570 * @num_controls: number of elements in the array
2572 * Return 0 for success, else error.
2574 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2575 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2577 return snd_soc_add_component_controls(&codec->component, controls,
2580 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2583 * snd_soc_add_platform_controls - add an array of controls to a platform.
2584 * Convenience function to add a list of controls.
2586 * @platform: platform to add controls to
2587 * @controls: array of controls to add
2588 * @num_controls: number of elements in the array
2590 * Return 0 for success, else error.
2592 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2593 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2595 return snd_soc_add_component_controls(&platform->component, controls,
2598 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2601 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2602 * Convenience function to add a list of controls.
2604 * @soc_card: SoC card to add controls to
2605 * @controls: array of controls to add
2606 * @num_controls: number of elements in the array
2608 * Return 0 for success, else error.
2610 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2611 const struct snd_kcontrol_new *controls, int num_controls)
2613 struct snd_card *card = soc_card->snd_card;
2615 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2618 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2621 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2622 * Convienience function to add a list of controls.
2624 * @dai: DAI to add controls to
2625 * @controls: array of controls to add
2626 * @num_controls: number of elements in the array
2628 * Return 0 for success, else error.
2630 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2631 const struct snd_kcontrol_new *controls, int num_controls)
2633 struct snd_card *card = dai->component->card->snd_card;
2635 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2638 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2641 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2643 * @clk_id: DAI specific clock ID
2644 * @freq: new clock frequency in Hz
2645 * @dir: new clock direction - input/output.
2647 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2649 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2650 unsigned int freq, int dir)
2652 if (dai->driver->ops->set_sysclk)
2653 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2655 return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
2658 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2661 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2663 * @clk_id: DAI specific clock ID
2664 * @source: Source for the clock
2665 * @freq: new clock frequency in Hz
2666 * @dir: new clock direction - input/output.
2668 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2670 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2671 int source, unsigned int freq, int dir)
2673 if (codec->driver->set_sysclk)
2674 return codec->driver->set_sysclk(codec, clk_id, source,
2679 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2682 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2683 * @component: COMPONENT
2684 * @clk_id: DAI specific clock ID
2685 * @source: Source for the clock
2686 * @freq: new clock frequency in Hz
2687 * @dir: new clock direction - input/output.
2689 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2691 int snd_soc_component_set_sysclk(struct snd_soc_component *component, int clk_id,
2692 int source, unsigned int freq, int dir)
2694 /* will be removed */
2695 if (component->set_sysclk)
2696 return component->set_sysclk(component, clk_id, source,
2699 if (component->driver->set_sysclk)
2700 return component->driver->set_sysclk(component, clk_id, source,
2705 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk);
2708 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2710 * @div_id: DAI specific clock divider ID
2711 * @div: new clock divisor.
2713 * Configures the clock dividers. This is used to derive the best DAI bit and
2714 * frame clocks from the system or master clock. It's best to set the DAI bit
2715 * and frame clocks as low as possible to save system power.
2717 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2718 int div_id, int div)
2720 if (dai->driver->ops->set_clkdiv)
2721 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2725 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2728 * snd_soc_dai_set_pll - configure DAI PLL.
2730 * @pll_id: DAI specific PLL ID
2731 * @source: DAI specific source for the PLL
2732 * @freq_in: PLL input clock frequency in Hz
2733 * @freq_out: requested PLL output clock frequency in Hz
2735 * Configures and enables PLL to generate output clock based on input clock.
2737 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2738 unsigned int freq_in, unsigned int freq_out)
2740 if (dai->driver->ops->set_pll)
2741 return dai->driver->ops->set_pll(dai, pll_id, source,
2744 return snd_soc_component_set_pll(dai->component, pll_id, source,
2747 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2750 * snd_soc_codec_set_pll - configure codec PLL.
2752 * @pll_id: DAI specific PLL ID
2753 * @source: DAI specific source for the PLL
2754 * @freq_in: PLL input clock frequency in Hz
2755 * @freq_out: requested PLL output clock frequency in Hz
2757 * Configures and enables PLL to generate output clock based on input clock.
2759 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2760 unsigned int freq_in, unsigned int freq_out)
2762 if (codec->driver->set_pll)
2763 return codec->driver->set_pll(codec, pll_id, source,
2768 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2771 * snd_soc_component_set_pll - configure component PLL.
2772 * @component: COMPONENT
2773 * @pll_id: DAI specific PLL ID
2774 * @source: DAI specific source for the PLL
2775 * @freq_in: PLL input clock frequency in Hz
2776 * @freq_out: requested PLL output clock frequency in Hz
2778 * Configures and enables PLL to generate output clock based on input clock.
2780 int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
2781 int source, unsigned int freq_in,
2782 unsigned int freq_out)
2784 /* will be removed */
2785 if (component->set_pll)
2786 return component->set_pll(component, pll_id, source,
2789 if (component->driver->set_pll)
2790 return component->driver->set_pll(component, pll_id, source,
2795 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll);
2798 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2800 * @ratio: Ratio of BCLK to Sample rate.
2802 * Configures the DAI for a preset BCLK to sample rate ratio.
2804 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2806 if (dai->driver->ops->set_bclk_ratio)
2807 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2811 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2814 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2816 * @fmt: SND_SOC_DAIFMT_* format value.
2818 * Configures the DAI hardware format and clocking.
2820 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2822 if (dai->driver == NULL)
2824 if (dai->driver->ops->set_fmt == NULL)
2826 return dai->driver->ops->set_fmt(dai, fmt);
2828 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2831 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2832 * @slots: Number of slots in use.
2833 * @tx_mask: bitmask representing active TX slots.
2834 * @rx_mask: bitmask representing active RX slots.
2836 * Generates the TDM tx and rx slot default masks for DAI.
2838 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2839 unsigned int *tx_mask,
2840 unsigned int *rx_mask)
2842 if (*tx_mask || *rx_mask)
2848 *tx_mask = (1 << slots) - 1;
2849 *rx_mask = (1 << slots) - 1;
2855 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2856 * @dai: The DAI to configure
2857 * @tx_mask: bitmask representing active TX slots.
2858 * @rx_mask: bitmask representing active RX slots.
2859 * @slots: Number of slots in use.
2860 * @slot_width: Width in bits for each slot.
2862 * This function configures the specified DAI for TDM operation. @slot contains
2863 * the total number of slots of the TDM stream and @slot_with the width of each
2864 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2865 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2866 * DAI should write to or read from. If a bit is set the corresponding slot is
2867 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2868 * the first slot, bit 1 to the second slot and so on. The first active slot
2869 * maps to the first channel of the DAI, the second active slot to the second
2870 * channel and so on.
2872 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2873 * @rx_mask and @slot_width will be ignored.
2875 * Returns 0 on success, a negative error code otherwise.
2877 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2878 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2880 if (dai->driver->ops->xlate_tdm_slot_mask)
2881 dai->driver->ops->xlate_tdm_slot_mask(slots,
2882 &tx_mask, &rx_mask);
2884 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2886 dai->tx_mask = tx_mask;
2887 dai->rx_mask = rx_mask;
2889 if (dai->driver->ops->set_tdm_slot)
2890 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2895 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2898 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2900 * @tx_num: how many TX channels
2901 * @tx_slot: pointer to an array which imply the TX slot number channel
2903 * @rx_num: how many RX channels
2904 * @rx_slot: pointer to an array which imply the RX slot number channel
2907 * configure the relationship between channel number and TDM slot number.
2909 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2910 unsigned int tx_num, unsigned int *tx_slot,
2911 unsigned int rx_num, unsigned int *rx_slot)
2913 if (dai->driver->ops->set_channel_map)
2914 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2919 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2922 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2924 * @tristate: tristate enable
2926 * Tristates the DAI so that others can use it.
2928 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2930 if (dai->driver->ops->set_tristate)
2931 return dai->driver->ops->set_tristate(dai, tristate);
2935 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2938 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2940 * @mute: mute enable
2941 * @direction: stream to mute
2943 * Mutes the DAI DAC.
2945 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2951 if (dai->driver->ops->mute_stream)
2952 return dai->driver->ops->mute_stream(dai, mute, direction);
2953 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2954 dai->driver->ops->digital_mute)
2955 return dai->driver->ops->digital_mute(dai, mute);
2959 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2962 * snd_soc_register_card - Register a card with the ASoC core
2964 * @card: Card to register
2967 int snd_soc_register_card(struct snd_soc_card *card)
2970 struct snd_soc_pcm_runtime *rtd;
2972 if (!card->name || !card->dev)
2975 for (i = 0; i < card->num_links; i++) {
2976 struct snd_soc_dai_link *link = &card->dai_link[i];
2978 ret = soc_init_dai_link(card, link);
2980 dev_err(card->dev, "ASoC: failed to init link %s\n",
2986 dev_set_drvdata(card->dev, card);
2988 snd_soc_initialize_card_lists(card);
2990 INIT_LIST_HEAD(&card->dai_link_list);
2991 card->num_dai_links = 0;
2993 INIT_LIST_HEAD(&card->rtd_list);
2996 INIT_LIST_HEAD(&card->dapm_dirty);
2997 INIT_LIST_HEAD(&card->dobj_list);
2998 card->instantiated = 0;
2999 mutex_init(&card->mutex);
3000 mutex_init(&card->dapm_mutex);
3002 ret = snd_soc_instantiate_card(card);
3006 /* deactivate pins to sleep state */
3007 list_for_each_entry(rtd, &card->rtd_list, list) {
3008 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3011 for (j = 0; j < rtd->num_codecs; j++) {
3012 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
3013 if (!codec_dai->active)
3014 pinctrl_pm_select_sleep_state(codec_dai->dev);
3017 if (!cpu_dai->active)
3018 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3023 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3026 * snd_soc_unregister_card - Unregister a card with the ASoC core
3028 * @card: Card to unregister
3031 int snd_soc_unregister_card(struct snd_soc_card *card)
3033 if (card->instantiated) {
3034 card->instantiated = false;
3035 snd_soc_dapm_shutdown(card);
3036 soc_cleanup_card_resources(card);
3037 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3042 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3045 * Simplify DAI link configuration by removing ".-1" from device names
3046 * and sanitizing names.
3048 static char *fmt_single_name(struct device *dev, int *id)
3050 char *found, name[NAME_SIZE];
3053 if (dev_name(dev) == NULL)
3056 strlcpy(name, dev_name(dev), NAME_SIZE);
3058 /* are we a "%s.%d" name (platform and SPI components) */
3059 found = strstr(name, dev->driver->name);
3062 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3064 /* discard ID from name if ID == -1 */
3066 found[strlen(dev->driver->name)] = '\0';
3070 /* I2C component devices are named "bus-addr" */
3071 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3072 char tmp[NAME_SIZE];
3074 /* create unique ID number from I2C addr and bus */
3075 *id = ((id1 & 0xffff) << 16) + id2;
3077 /* sanitize component name for DAI link creation */
3078 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3079 strlcpy(name, tmp, NAME_SIZE);
3084 return kstrdup(name, GFP_KERNEL);
3088 * Simplify DAI link naming for single devices with multiple DAIs by removing
3089 * any ".-1" and using the DAI name (instead of device name).
3091 static inline char *fmt_multiple_name(struct device *dev,
3092 struct snd_soc_dai_driver *dai_drv)
3094 if (dai_drv->name == NULL) {
3096 "ASoC: error - multiple DAI %s registered with no name\n",
3101 return kstrdup(dai_drv->name, GFP_KERNEL);
3105 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3107 * @component: The component for which the DAIs should be unregistered
3109 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3111 struct snd_soc_dai *dai, *_dai;
3113 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3114 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3116 list_del(&dai->list);
3122 /* Create a DAI and add it to the component's DAI list */
3123 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
3124 struct snd_soc_dai_driver *dai_drv,
3125 bool legacy_dai_naming)
3127 struct device *dev = component->dev;
3128 struct snd_soc_dai *dai;
3130 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
3132 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3137 * Back in the old days when we still had component-less DAIs,
3138 * instead of having a static name, component-less DAIs would
3139 * inherit the name of the parent device so it is possible to
3140 * register multiple instances of the DAI. We still need to keep
3141 * the same naming style even though those DAIs are not
3142 * component-less anymore.
3144 if (legacy_dai_naming &&
3145 (dai_drv->id == 0 || dai_drv->name == NULL)) {
3146 dai->name = fmt_single_name(dev, &dai->id);
3148 dai->name = fmt_multiple_name(dev, dai_drv);
3150 dai->id = dai_drv->id;
3152 dai->id = component->num_dai;
3154 if (dai->name == NULL) {
3159 dai->component = component;
3161 dai->driver = dai_drv;
3162 if (!dai->driver->ops)
3163 dai->driver->ops = &null_dai_ops;
3165 list_add_tail(&dai->list, &component->dai_list);
3166 component->num_dai++;
3168 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3173 * snd_soc_register_dais - Register a DAI with the ASoC core
3175 * @component: The component the DAIs are registered for
3176 * @dai_drv: DAI driver to use for the DAIs
3177 * @count: Number of DAIs
3178 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3181 static int snd_soc_register_dais(struct snd_soc_component *component,
3182 struct snd_soc_dai_driver *dai_drv, size_t count,
3183 bool legacy_dai_naming)
3185 struct device *dev = component->dev;
3186 struct snd_soc_dai *dai;
3190 dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count);
3192 for (i = 0; i < count; i++) {
3194 dai = soc_add_dai(component, dai_drv + i,
3195 count == 1 && legacy_dai_naming);
3205 snd_soc_unregister_dais(component);
3211 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3213 * @component: The component the DAIs are registered for
3214 * @dai_drv: DAI driver to use for the DAI
3216 * Topology can use this API to register DAIs when probing a component.
3217 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3218 * will be freed in the component cleanup.
3220 int snd_soc_register_dai(struct snd_soc_component *component,
3221 struct snd_soc_dai_driver *dai_drv)
3223 struct snd_soc_dapm_context *dapm =
3224 snd_soc_component_get_dapm(component);
3225 struct snd_soc_dai *dai;
3228 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
3229 dev_err(component->dev, "Invalid dai type %d\n",
3230 dai_drv->dobj.type);
3234 lockdep_assert_held(&client_mutex);
3235 dai = soc_add_dai(component, dai_drv, false);
3239 /* Create the DAI widgets here. After adding DAIs, topology may
3240 * also add routes that need these widgets as source or sink.
3242 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
3244 dev_err(component->dev,
3245 "Failed to create DAI widgets %d\n", ret);
3250 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3252 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
3253 enum snd_soc_dapm_type type, int subseq)
3255 struct snd_soc_component *component = dapm->component;
3257 component->driver->seq_notifier(component, type, subseq);
3260 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
3263 struct snd_soc_component *component = dapm->component;
3265 return component->driver->stream_event(component, event);
3268 static int snd_soc_component_drv_pcm_new(struct snd_soc_component *component,
3269 struct snd_soc_pcm_runtime *rtd)
3271 if (component->driver->pcm_new)
3272 return component->driver->pcm_new(rtd);
3277 static void snd_soc_component_drv_pcm_free(struct snd_soc_component *component,
3278 struct snd_pcm *pcm)
3280 if (component->driver->pcm_free)
3281 component->driver->pcm_free(pcm);
3284 static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context *dapm,
3285 enum snd_soc_bias_level level)
3287 struct snd_soc_component *component = dapm->component;
3289 return component->driver->set_bias_level(component, level);
3292 static int snd_soc_component_initialize(struct snd_soc_component *component,
3293 const struct snd_soc_component_driver *driver, struct device *dev)
3295 struct snd_soc_dapm_context *dapm;
3297 component->name = fmt_single_name(dev, &component->id);
3298 if (!component->name) {
3299 dev_err(dev, "ASoC: Failed to allocate name\n");
3303 component->dev = dev;
3304 component->driver = driver;
3305 component->probe = component->driver->probe;
3306 component->remove = component->driver->remove;
3307 component->suspend = component->driver->suspend;
3308 component->resume = component->driver->resume;
3309 component->set_sysclk = component->driver->set_sysclk;
3310 component->set_pll = component->driver->set_pll;
3311 component->set_jack = component->driver->set_jack;
3312 component->pcm_new = snd_soc_component_drv_pcm_new;
3313 component->pcm_free = snd_soc_component_drv_pcm_free;
3315 dapm = snd_soc_component_get_dapm(component);
3317 dapm->component = component;
3318 dapm->bias_level = SND_SOC_BIAS_OFF;
3319 dapm->idle_bias_off = !driver->idle_bias_on;
3320 dapm->suspend_bias_off = driver->suspend_bias_off;
3321 if (driver->seq_notifier)
3322 dapm->seq_notifier = snd_soc_component_seq_notifier;
3323 if (driver->stream_event)
3324 dapm->stream_event = snd_soc_component_stream_event;
3325 if (driver->set_bias_level)
3326 dapm->set_bias_level = snd_soc_component_set_bias_level;
3328 INIT_LIST_HEAD(&component->dai_list);
3329 mutex_init(&component->io_mutex);
3334 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
3336 int val_bytes = regmap_get_val_bytes(component->regmap);
3338 /* Errors are legitimate for non-integer byte multiples */
3340 component->val_bytes = val_bytes;
3343 #ifdef CONFIG_REGMAP
3346 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3347 * @component: The component for which to initialize the regmap instance
3348 * @regmap: The regmap instance that should be used by the component
3350 * This function allows deferred assignment of the regmap instance that is
3351 * associated with the component. Only use this if the regmap instance is not
3352 * yet ready when the component is registered. The function must also be called
3353 * before the first IO attempt of the component.
3355 void snd_soc_component_init_regmap(struct snd_soc_component *component,
3356 struct regmap *regmap)
3358 component->regmap = regmap;
3359 snd_soc_component_setup_regmap(component);
3361 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
3364 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3365 * @component: The component for which to de-initialize the regmap instance
3367 * Calls regmap_exit() on the regmap instance associated to the component and
3368 * removes the regmap instance from the component.
3370 * This function should only be used if snd_soc_component_init_regmap() was used
3371 * to initialize the regmap instance.
3373 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
3375 regmap_exit(component->regmap);
3376 component->regmap = NULL;
3378 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3382 static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
3384 if (!component->write && !component->read) {
3385 if (!component->regmap)
3386 component->regmap = dev_get_regmap(component->dev, NULL);
3387 if (component->regmap)
3388 snd_soc_component_setup_regmap(component);
3391 list_add(&component->list, &component_list);
3392 INIT_LIST_HEAD(&component->dobj_list);
3395 static void snd_soc_component_add(struct snd_soc_component *component)
3397 mutex_lock(&client_mutex);
3398 snd_soc_component_add_unlocked(component);
3399 mutex_unlock(&client_mutex);
3402 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3404 snd_soc_unregister_dais(component);
3405 kfree(component->name);
3408 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3410 struct snd_soc_card *card = component->card;
3413 snd_soc_unregister_card(card);
3415 list_del(&component->list);
3418 #define ENDIANNESS_MAP(name) \
3419 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
3420 static u64 endianness_format_map[] = {
3421 ENDIANNESS_MAP(S16_),
3422 ENDIANNESS_MAP(U16_),
3423 ENDIANNESS_MAP(S24_),
3424 ENDIANNESS_MAP(U24_),
3425 ENDIANNESS_MAP(S32_),
3426 ENDIANNESS_MAP(U32_),
3427 ENDIANNESS_MAP(S24_3),
3428 ENDIANNESS_MAP(U24_3),
3429 ENDIANNESS_MAP(S20_3),
3430 ENDIANNESS_MAP(U20_3),
3431 ENDIANNESS_MAP(S18_3),
3432 ENDIANNESS_MAP(U18_3),
3433 ENDIANNESS_MAP(FLOAT_),
3434 ENDIANNESS_MAP(FLOAT64_),
3435 ENDIANNESS_MAP(IEC958_SUBFRAME_),
3439 * Fix up the DAI formats for endianness: codecs don't actually see
3440 * the endianness of the data but we're using the CPU format
3441 * definitions which do need to include endianness so we ensure that
3442 * codec DAIs always have both big and little endian variants set.
3444 static void convert_endianness_formats(struct snd_soc_pcm_stream *stream)
3448 for (i = 0; i < ARRAY_SIZE(endianness_format_map); i++)
3449 if (stream->formats & endianness_format_map[i])
3450 stream->formats |= endianness_format_map[i];
3453 int snd_soc_add_component(struct device *dev,
3454 struct snd_soc_component *component,
3455 const struct snd_soc_component_driver *component_driver,
3456 struct snd_soc_dai_driver *dai_drv,
3462 ret = snd_soc_component_initialize(component, component_driver, dev);
3466 component->ignore_pmdown_time = true;
3467 component->registered_as_component = true;
3469 if (component_driver->endianness) {
3470 for (i = 0; i < num_dai; i++) {
3471 convert_endianness_formats(&dai_drv[i].playback);
3472 convert_endianness_formats(&dai_drv[i].capture);
3476 ret = snd_soc_register_dais(component, dai_drv, num_dai,
3477 !component_driver->non_legacy_dai_naming);
3479 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3483 snd_soc_component_add(component);
3488 snd_soc_component_cleanup(component);
3493 EXPORT_SYMBOL_GPL(snd_soc_add_component);
3495 int snd_soc_register_component(struct device *dev,
3496 const struct snd_soc_component_driver *component_driver,
3497 struct snd_soc_dai_driver *dai_drv,
3500 struct snd_soc_component *component;
3502 component = kzalloc(sizeof(*component), GFP_KERNEL);
3506 return snd_soc_add_component(dev, component, component_driver,
3509 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3512 * snd_soc_unregister_component - Unregister all related component
3513 * from the ASoC core
3515 * @dev: The device to unregister
3517 static int __snd_soc_unregister_component(struct device *dev)
3519 struct snd_soc_component *component;
3522 mutex_lock(&client_mutex);
3523 list_for_each_entry(component, &component_list, list) {
3524 if (dev != component->dev ||
3525 !component->registered_as_component)
3528 snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL);
3529 snd_soc_component_del_unlocked(component);
3533 mutex_unlock(&client_mutex);
3536 snd_soc_component_cleanup(component);
3543 void snd_soc_unregister_component(struct device *dev)
3545 while (__snd_soc_unregister_component(dev));
3547 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3549 struct snd_soc_component *snd_soc_lookup_component(struct device *dev,
3550 const char *driver_name)
3552 struct snd_soc_component *component;
3553 struct snd_soc_component *ret;
3556 mutex_lock(&client_mutex);
3557 list_for_each_entry(component, &component_list, list) {
3558 if (dev != component->dev)
3562 (driver_name != component->driver->name) &&
3563 (strcmp(component->driver->name, driver_name) != 0))
3569 mutex_unlock(&client_mutex);
3573 EXPORT_SYMBOL_GPL(snd_soc_lookup_component);
3575 static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
3577 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3579 return platform->driver->probe(platform);
3582 static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
3584 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3586 platform->driver->remove(platform);
3589 static int snd_soc_platform_drv_pcm_new(struct snd_soc_component *component,
3590 struct snd_soc_pcm_runtime *rtd)
3592 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3594 if (platform->driver->pcm_new)
3595 return platform->driver->pcm_new(rtd);
3600 static void snd_soc_platform_drv_pcm_free(struct snd_soc_component *component,
3601 struct snd_pcm *pcm)
3603 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3605 if (platform->driver->pcm_free)
3606 platform->driver->pcm_free(pcm);
3610 * snd_soc_add_platform - Add a platform to the ASoC core
3611 * @dev: The parent device for the platform
3612 * @platform: The platform to add
3613 * @platform_drv: The driver for the platform
3615 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
3616 const struct snd_soc_platform_driver *platform_drv)
3620 ret = snd_soc_component_initialize(&platform->component,
3621 &platform_drv->component_driver, dev);
3625 platform->dev = dev;
3626 platform->driver = platform_drv;
3628 if (platform_drv->probe)
3629 platform->component.probe = snd_soc_platform_drv_probe;
3630 if (platform_drv->remove)
3631 platform->component.remove = snd_soc_platform_drv_remove;
3632 if (platform_drv->pcm_new)
3633 platform->component.pcm_new = snd_soc_platform_drv_pcm_new;
3634 if (platform_drv->pcm_free)
3635 platform->component.pcm_free = snd_soc_platform_drv_pcm_free;
3637 #ifdef CONFIG_DEBUG_FS
3638 platform->component.debugfs_prefix = "platform";
3641 mutex_lock(&client_mutex);
3642 snd_soc_component_add_unlocked(&platform->component);
3643 list_add(&platform->list, &platform_list);
3644 mutex_unlock(&client_mutex);
3646 dev_dbg(dev, "ASoC: Registered platform '%s'\n",
3647 platform->component.name);
3651 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
3654 * snd_soc_register_platform - Register a platform with the ASoC core
3656 * @dev: The device for the platform
3657 * @platform_drv: The driver for the platform
3659 int snd_soc_register_platform(struct device *dev,
3660 const struct snd_soc_platform_driver *platform_drv)
3662 struct snd_soc_platform *platform;
3665 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3667 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3668 if (platform == NULL)
3671 ret = snd_soc_add_platform(dev, platform, platform_drv);
3677 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3680 * snd_soc_remove_platform - Remove a platform from the ASoC core
3681 * @platform: the platform to remove
3683 void snd_soc_remove_platform(struct snd_soc_platform *platform)
3686 mutex_lock(&client_mutex);
3687 list_del(&platform->list);
3688 snd_soc_component_del_unlocked(&platform->component);
3689 mutex_unlock(&client_mutex);
3691 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
3692 platform->component.name);
3694 snd_soc_component_cleanup(&platform->component);
3696 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
3698 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
3700 struct snd_soc_platform *platform;
3702 mutex_lock(&client_mutex);
3703 list_for_each_entry(platform, &platform_list, list) {
3704 if (dev == platform->dev) {
3705 mutex_unlock(&client_mutex);
3709 mutex_unlock(&client_mutex);
3713 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
3716 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3718 * @dev: platform to unregister
3720 void snd_soc_unregister_platform(struct device *dev)
3722 struct snd_soc_platform *platform;
3724 platform = snd_soc_lookup_platform(dev);
3728 snd_soc_remove_platform(platform);
3731 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3733 static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
3735 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3737 return codec->driver->probe(codec);
3740 static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
3742 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3744 codec->driver->remove(codec);
3747 static int snd_soc_codec_drv_suspend(struct snd_soc_component *component)
3749 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3751 return codec->driver->suspend(codec);
3754 static int snd_soc_codec_drv_resume(struct snd_soc_component *component)
3756 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3758 return codec->driver->resume(codec);
3761 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
3762 unsigned int reg, unsigned int val)
3764 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3766 return codec->driver->write(codec, reg, val);
3769 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
3770 unsigned int reg, unsigned int *val)
3772 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3774 *val = codec->driver->read(codec, reg);
3779 static int snd_soc_codec_set_sysclk_(struct snd_soc_component *component,
3780 int clk_id, int source, unsigned int freq, int dir)
3782 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3784 return snd_soc_codec_set_sysclk(codec, clk_id, source, freq, dir);
3787 static int snd_soc_codec_set_pll_(struct snd_soc_component *component,
3788 int pll_id, int source, unsigned int freq_in,
3789 unsigned int freq_out)
3791 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3793 return snd_soc_codec_set_pll(codec, pll_id, source, freq_in, freq_out);
3796 static int snd_soc_codec_set_jack_(struct snd_soc_component *component,
3797 struct snd_soc_jack *jack, void *data)
3799 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3801 return snd_soc_codec_set_jack(codec, jack, data);
3804 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
3805 enum snd_soc_bias_level level)
3807 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
3809 return codec->driver->set_bias_level(codec, level);
3813 * snd_soc_register_codec - Register a codec with the ASoC core
3815 * @dev: The parent device for this codec
3816 * @codec_drv: Codec driver
3817 * @dai_drv: The associated DAI driver
3818 * @num_dai: Number of DAIs
3820 int snd_soc_register_codec(struct device *dev,
3821 const struct snd_soc_codec_driver *codec_drv,
3822 struct snd_soc_dai_driver *dai_drv,
3825 struct snd_soc_dapm_context *dapm;
3826 struct snd_soc_codec *codec;
3827 struct snd_soc_dai *dai;
3830 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3832 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3836 codec->component.codec = codec;
3838 ret = snd_soc_component_initialize(&codec->component,
3839 &codec_drv->component_driver, dev);
3843 if (codec_drv->probe)
3844 codec->component.probe = snd_soc_codec_drv_probe;
3845 if (codec_drv->remove)
3846 codec->component.remove = snd_soc_codec_drv_remove;
3847 if (codec_drv->suspend)
3848 codec->component.suspend = snd_soc_codec_drv_suspend;
3849 if (codec_drv->resume)
3850 codec->component.resume = snd_soc_codec_drv_resume;
3851 if (codec_drv->write)
3852 codec->component.write = snd_soc_codec_drv_write;
3853 if (codec_drv->read)
3854 codec->component.read = snd_soc_codec_drv_read;
3855 if (codec_drv->set_sysclk)
3856 codec->component.set_sysclk = snd_soc_codec_set_sysclk_;
3857 if (codec_drv->set_pll)
3858 codec->component.set_pll = snd_soc_codec_set_pll_;
3859 if (codec_drv->set_jack)
3860 codec->component.set_jack = snd_soc_codec_set_jack_;
3861 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3863 dapm = snd_soc_codec_get_dapm(codec);
3864 dapm->idle_bias_off = codec_drv->idle_bias_off;
3865 dapm->suspend_bias_off = codec_drv->suspend_bias_off;
3866 if (codec_drv->seq_notifier)
3867 dapm->seq_notifier = codec_drv->seq_notifier;
3868 if (codec_drv->set_bias_level)
3869 dapm->set_bias_level = snd_soc_codec_set_bias_level;
3871 codec->driver = codec_drv;
3872 codec->component.val_bytes = codec_drv->reg_word_size;
3874 #ifdef CONFIG_DEBUG_FS
3875 codec->component.init_debugfs = soc_init_codec_debugfs;
3876 codec->component.debugfs_prefix = "codec";
3879 if (codec_drv->get_regmap)
3880 codec->component.regmap = codec_drv->get_regmap(dev);
3882 for (i = 0; i < num_dai; i++) {
3883 convert_endianness_formats(&dai_drv[i].playback);
3884 convert_endianness_formats(&dai_drv[i].capture);
3887 ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
3889 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3893 list_for_each_entry(dai, &codec->component.dai_list, list)
3896 mutex_lock(&client_mutex);
3897 snd_soc_component_add_unlocked(&codec->component);
3898 list_add(&codec->list, &codec_list);
3899 mutex_unlock(&client_mutex);
3901 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
3902 codec->component.name);
3906 snd_soc_component_cleanup(&codec->component);
3911 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3914 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3916 * @dev: codec to unregister
3918 void snd_soc_unregister_codec(struct device *dev)
3920 struct snd_soc_codec *codec;
3922 mutex_lock(&client_mutex);
3923 list_for_each_entry(codec, &codec_list, list) {
3924 if (dev == codec->dev)
3927 mutex_unlock(&client_mutex);
3931 list_del(&codec->list);
3932 snd_soc_component_del_unlocked(&codec->component);
3933 mutex_unlock(&client_mutex);
3935 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
3936 codec->component.name);
3938 snd_soc_component_cleanup(&codec->component);
3939 snd_soc_cache_exit(codec);
3942 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3944 /* Retrieve a card's name from device tree */
3945 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3946 const char *propname)
3948 struct device_node *np;
3952 pr_err("card->dev is not set before calling %s\n", __func__);
3956 np = card->dev->of_node;
3958 ret = of_property_read_string_index(np, propname, 0, &card->name);
3960 * EINVAL means the property does not exist. This is fine providing
3961 * card->name was previously set, which is checked later in
3962 * snd_soc_register_card.
3964 if (ret < 0 && ret != -EINVAL) {
3966 "ASoC: Property '%s' could not be read: %d\n",
3973 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3975 static const struct snd_soc_dapm_widget simple_widgets[] = {
3976 SND_SOC_DAPM_MIC("Microphone", NULL),
3977 SND_SOC_DAPM_LINE("Line", NULL),
3978 SND_SOC_DAPM_HP("Headphone", NULL),
3979 SND_SOC_DAPM_SPK("Speaker", NULL),
3982 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3983 const char *propname)
3985 struct device_node *np = card->dev->of_node;
3986 struct snd_soc_dapm_widget *widgets;
3987 const char *template, *wname;
3988 int i, j, num_widgets, ret;
3990 num_widgets = of_property_count_strings(np, propname);
3991 if (num_widgets < 0) {
3993 "ASoC: Property '%s' does not exist\n", propname);
3996 if (num_widgets & 1) {
3998 "ASoC: Property '%s' length is not even\n", propname);
4004 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4009 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4013 "ASoC: Could not allocate memory for widgets\n");
4017 for (i = 0; i < num_widgets; i++) {
4018 ret = of_property_read_string_index(np, propname,
4022 "ASoC: Property '%s' index %d read error:%d\n",
4023 propname, 2 * i, ret);
4027 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4028 if (!strncmp(template, simple_widgets[j].name,
4029 strlen(simple_widgets[j].name))) {
4030 widgets[i] = simple_widgets[j];
4035 if (j >= ARRAY_SIZE(simple_widgets)) {
4037 "ASoC: DAPM widget '%s' is not supported\n",
4042 ret = of_property_read_string_index(np, propname,
4047 "ASoC: Property '%s' index %d read error:%d\n",
4048 propname, (2 * i) + 1, ret);
4052 widgets[i].name = wname;
4055 card->of_dapm_widgets = widgets;
4056 card->num_of_dapm_widgets = num_widgets;
4060 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4062 static int snd_soc_of_get_slot_mask(struct device_node *np,
4063 const char *prop_name,
4067 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
4073 for (i = 0; i < val; i++)
4074 if (be32_to_cpup(&of_slot_mask[i]))
4080 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4081 unsigned int *tx_mask,
4082 unsigned int *rx_mask,
4083 unsigned int *slots,
4084 unsigned int *slot_width)
4090 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
4092 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
4094 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4095 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4103 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4104 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4114 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4116 void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card,
4117 struct snd_soc_codec_conf *codec_conf,
4118 struct device_node *of_node,
4119 const char *propname)
4121 struct device_node *np = card->dev->of_node;
4125 ret = of_property_read_string(np, propname, &str);
4127 /* no prefix is not error */
4131 codec_conf->of_node = of_node;
4132 codec_conf->name_prefix = str;
4134 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix);
4136 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4137 const char *propname)
4139 struct device_node *np = card->dev->of_node;
4141 struct snd_soc_dapm_route *routes;
4144 num_routes = of_property_count_strings(np, propname);
4145 if (num_routes < 0 || num_routes & 1) {
4147 "ASoC: Property '%s' does not exist or its length is not even\n",
4153 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4158 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4162 "ASoC: Could not allocate DAPM route table\n");
4166 for (i = 0; i < num_routes; i++) {
4167 ret = of_property_read_string_index(np, propname,
4168 2 * i, &routes[i].sink);
4171 "ASoC: Property '%s' index %d could not be read: %d\n",
4172 propname, 2 * i, ret);
4175 ret = of_property_read_string_index(np, propname,
4176 (2 * i) + 1, &routes[i].source);
4179 "ASoC: Property '%s' index %d could not be read: %d\n",
4180 propname, (2 * i) + 1, ret);
4185 card->num_of_dapm_routes = num_routes;
4186 card->of_dapm_routes = routes;
4190 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4192 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4194 struct device_node **bitclkmaster,
4195 struct device_node **framemaster)
4199 unsigned int format = 0;
4205 } of_fmt_table[] = {
4206 { "i2s", SND_SOC_DAIFMT_I2S },
4207 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4208 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4209 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4210 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4211 { "ac97", SND_SOC_DAIFMT_AC97 },
4212 { "pdm", SND_SOC_DAIFMT_PDM},
4213 { "msb", SND_SOC_DAIFMT_MSB },
4214 { "lsb", SND_SOC_DAIFMT_LSB },
4221 * check "dai-format = xxx"
4222 * or "[prefix]format = xxx"
4223 * SND_SOC_DAIFMT_FORMAT_MASK area
4225 ret = of_property_read_string(np, "dai-format", &str);
4227 snprintf(prop, sizeof(prop), "%sformat", prefix);
4228 ret = of_property_read_string(np, prop, &str);
4231 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4232 if (strcmp(str, of_fmt_table[i].name) == 0) {
4233 format |= of_fmt_table[i].val;
4240 * check "[prefix]continuous-clock"
4241 * SND_SOC_DAIFMT_CLOCK_MASK area
4243 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4244 if (of_property_read_bool(np, prop))
4245 format |= SND_SOC_DAIFMT_CONT;
4247 format |= SND_SOC_DAIFMT_GATED;
4250 * check "[prefix]bitclock-inversion"
4251 * check "[prefix]frame-inversion"
4252 * SND_SOC_DAIFMT_INV_MASK area
4254 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4255 bit = !!of_get_property(np, prop, NULL);
4257 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4258 frame = !!of_get_property(np, prop, NULL);
4260 switch ((bit << 4) + frame) {
4262 format |= SND_SOC_DAIFMT_IB_IF;
4265 format |= SND_SOC_DAIFMT_IB_NF;
4268 format |= SND_SOC_DAIFMT_NB_IF;
4271 /* SND_SOC_DAIFMT_NB_NF is default */
4276 * check "[prefix]bitclock-master"
4277 * check "[prefix]frame-master"
4278 * SND_SOC_DAIFMT_MASTER_MASK area
4280 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4281 bit = !!of_get_property(np, prop, NULL);
4282 if (bit && bitclkmaster)
4283 *bitclkmaster = of_parse_phandle(np, prop, 0);
4285 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4286 frame = !!of_get_property(np, prop, NULL);
4287 if (frame && framemaster)
4288 *framemaster = of_parse_phandle(np, prop, 0);
4290 switch ((bit << 4) + frame) {
4292 format |= SND_SOC_DAIFMT_CBM_CFM;
4295 format |= SND_SOC_DAIFMT_CBM_CFS;
4298 format |= SND_SOC_DAIFMT_CBS_CFM;
4301 format |= SND_SOC_DAIFMT_CBS_CFS;
4307 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4309 int snd_soc_get_dai_id(struct device_node *ep)
4311 struct snd_soc_component *pos;
4312 struct device_node *node;
4315 node = of_graph_get_port_parent(ep);
4318 * For example HDMI case, HDMI has video/sound port,
4319 * but ALSA SoC needs sound port number only.
4320 * Thus counting HDMI DT port/endpoint doesn't work.
4321 * Then, it should have .of_xlate_dai_id
4324 mutex_lock(&client_mutex);
4325 list_for_each_entry(pos, &component_list, list) {
4326 struct device_node *component_of_node = pos->dev->of_node;
4328 if (!component_of_node && pos->dev->parent)
4329 component_of_node = pos->dev->parent->of_node;
4331 if (component_of_node != node)
4334 if (pos->driver->of_xlate_dai_id)
4335 ret = pos->driver->of_xlate_dai_id(pos, ep);
4339 mutex_unlock(&client_mutex);
4345 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
4347 int snd_soc_get_dai_name(struct of_phandle_args *args,
4348 const char **dai_name)
4350 struct snd_soc_component *pos;
4351 struct device_node *component_of_node;
4352 int ret = -EPROBE_DEFER;
4354 mutex_lock(&client_mutex);
4355 list_for_each_entry(pos, &component_list, list) {
4356 component_of_node = pos->dev->of_node;
4357 if (!component_of_node && pos->dev->parent)
4358 component_of_node = pos->dev->parent->of_node;
4360 if (component_of_node != args->np)
4363 if (pos->driver->of_xlate_dai_name) {
4364 ret = pos->driver->of_xlate_dai_name(pos,
4368 struct snd_soc_dai *dai;
4371 switch (args->args_count) {
4373 id = 0; /* same as dai_drv[0] */
4383 if (id < 0 || id >= pos->num_dai) {
4390 /* find target DAI */
4391 list_for_each_entry(dai, &pos->dai_list, list) {
4397 *dai_name = dai->driver->name;
4399 *dai_name = pos->name;
4404 mutex_unlock(&client_mutex);
4407 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
4409 int snd_soc_of_get_dai_name(struct device_node *of_node,
4410 const char **dai_name)
4412 struct of_phandle_args args;
4415 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4416 "#sound-dai-cells", 0, &args);
4420 ret = snd_soc_get_dai_name(&args, dai_name);
4422 of_node_put(args.np);
4426 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4429 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4431 * @of_node: Device node
4432 * @dai_link: DAI link
4434 * Builds an array of CODEC DAI components from the DAI link property
4436 * The array is set in the DAI link and the number of DAIs is set accordingly.
4437 * The device nodes in the array (of_node) must be dereferenced by the caller.
4439 * Returns 0 for success
4441 int snd_soc_of_get_dai_link_codecs(struct device *dev,
4442 struct device_node *of_node,
4443 struct snd_soc_dai_link *dai_link)
4445 struct of_phandle_args args;
4446 struct snd_soc_dai_link_component *component;
4448 int index, num_codecs, ret;
4450 /* Count the number of CODECs */
4452 num_codecs = of_count_phandle_with_args(of_node, name,
4453 "#sound-dai-cells");
4454 if (num_codecs <= 0) {
4455 if (num_codecs == -ENOENT)
4456 dev_err(dev, "No 'sound-dai' property\n");
4458 dev_err(dev, "Bad phandle in 'sound-dai'\n");
4461 component = devm_kzalloc(dev,
4462 sizeof *component * num_codecs,
4466 dai_link->codecs = component;
4467 dai_link->num_codecs = num_codecs;
4469 /* Parse the list */
4470 for (index = 0, component = dai_link->codecs;
4471 index < dai_link->num_codecs;
4472 index++, component++) {
4473 ret = of_parse_phandle_with_args(of_node, name,
4478 component->of_node = args.np;
4479 ret = snd_soc_get_dai_name(&args, &component->dai_name);
4485 for (index = 0, component = dai_link->codecs;
4486 index < dai_link->num_codecs;
4487 index++, component++) {
4488 if (!component->of_node)
4490 of_node_put(component->of_node);
4491 component->of_node = NULL;
4493 dai_link->codecs = NULL;
4494 dai_link->num_codecs = 0;
4497 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
4499 static int __init snd_soc_init(void)
4501 snd_soc_debugfs_init();
4502 snd_soc_util_init();
4504 return platform_driver_register(&soc_driver);
4506 module_init(snd_soc_init);
4508 static void __exit snd_soc_exit(void)
4510 snd_soc_util_exit();
4511 snd_soc_debugfs_exit();
4513 platform_driver_unregister(&soc_driver);
4515 module_exit(snd_soc_exit);
4517 /* Module information */
4518 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4519 MODULE_DESCRIPTION("ALSA SoC Core");
4520 MODULE_LICENSE("GPL");
4521 MODULE_ALIAS("platform:soc-audio");