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;
596 for_each_rtdcom(rtd, rtdcom) {
597 const char *component_name = rtdcom->component->driver->name;
602 if ((component_name == driver_name) ||
603 strcmp(component_name, driver_name) == 0)
604 return rtdcom->component;
609 EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup);
611 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
612 const char *dai_link, int stream)
614 struct snd_soc_pcm_runtime *rtd;
616 list_for_each_entry(rtd, &card->rtd_list, list) {
617 if (rtd->dai_link->no_pcm &&
618 !strcmp(rtd->dai_link->name, dai_link))
619 return rtd->pcm->streams[stream].substream;
621 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
624 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
626 static const struct snd_soc_ops null_snd_soc_ops;
628 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
629 struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
631 struct snd_soc_pcm_runtime *rtd;
633 rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
637 INIT_LIST_HEAD(&rtd->component_list);
639 rtd->dai_link = dai_link;
640 if (!rtd->dai_link->ops)
641 rtd->dai_link->ops = &null_snd_soc_ops;
643 rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) *
644 dai_link->num_codecs,
646 if (!rtd->codec_dais) {
654 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
656 kfree(rtd->codec_dais);
657 snd_soc_rtdcom_del_all(rtd);
661 static void soc_add_pcm_runtime(struct snd_soc_card *card,
662 struct snd_soc_pcm_runtime *rtd)
664 list_add_tail(&rtd->list, &card->rtd_list);
665 rtd->num = card->num_rtd;
669 static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
671 struct snd_soc_pcm_runtime *rtd, *_rtd;
673 list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) {
674 list_del(&rtd->list);
675 soc_free_pcm_runtime(rtd);
681 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
682 const char *dai_link)
684 struct snd_soc_pcm_runtime *rtd;
686 list_for_each_entry(rtd, &card->rtd_list, list) {
687 if (!strcmp(rtd->dai_link->name, dai_link))
690 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
693 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
695 static void codec2codec_close_delayed_work(struct work_struct *work)
697 /* Currently nothing to do for c2c links
698 * Since c2c links are internal nodes in the DAPM graph and
699 * don't interface with the outside world or application layer
700 * we don't have to do any special handling on close.
704 #ifdef CONFIG_PM_SLEEP
705 /* powers down audio subsystem for suspend */
706 int snd_soc_suspend(struct device *dev)
708 struct snd_soc_card *card = dev_get_drvdata(dev);
709 struct snd_soc_component *component;
710 struct snd_soc_pcm_runtime *rtd;
713 /* If the card is not initialized yet there is nothing to do */
714 if (!card->instantiated)
717 /* Due to the resume being scheduled into a workqueue we could
718 * suspend before that's finished - wait for it to complete.
720 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
722 /* we're going to block userspace touching us until resume completes */
723 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
725 /* mute any active DACs */
726 list_for_each_entry(rtd, &card->rtd_list, list) {
728 if (rtd->dai_link->ignore_suspend)
731 for (i = 0; i < rtd->num_codecs; i++) {
732 struct snd_soc_dai *dai = rtd->codec_dais[i];
733 struct snd_soc_dai_driver *drv = dai->driver;
735 if (drv->ops->digital_mute && dai->playback_active)
736 drv->ops->digital_mute(dai, 1);
740 /* suspend all pcms */
741 list_for_each_entry(rtd, &card->rtd_list, list) {
742 if (rtd->dai_link->ignore_suspend)
745 snd_pcm_suspend_all(rtd->pcm);
748 if (card->suspend_pre)
749 card->suspend_pre(card);
751 list_for_each_entry(rtd, &card->rtd_list, list) {
752 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
754 if (rtd->dai_link->ignore_suspend)
757 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
758 cpu_dai->driver->suspend(cpu_dai);
761 /* close any waiting streams */
762 list_for_each_entry(rtd, &card->rtd_list, list)
763 flush_delayed_work(&rtd->delayed_work);
765 list_for_each_entry(rtd, &card->rtd_list, list) {
767 if (rtd->dai_link->ignore_suspend)
770 snd_soc_dapm_stream_event(rtd,
771 SNDRV_PCM_STREAM_PLAYBACK,
772 SND_SOC_DAPM_STREAM_SUSPEND);
774 snd_soc_dapm_stream_event(rtd,
775 SNDRV_PCM_STREAM_CAPTURE,
776 SND_SOC_DAPM_STREAM_SUSPEND);
779 /* Recheck all endpoints too, their state is affected by suspend */
780 dapm_mark_endpoints_dirty(card);
781 snd_soc_dapm_sync(&card->dapm);
783 /* suspend all COMPONENTs */
784 list_for_each_entry(component, &card->component_dev_list, card_list) {
785 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
787 /* If there are paths active then the COMPONENT will be held with
788 * bias _ON and should not be suspended. */
789 if (!component->suspended) {
790 switch (snd_soc_dapm_get_bias_level(dapm)) {
791 case SND_SOC_BIAS_STANDBY:
793 * If the COMPONENT is capable of idle
794 * bias off then being in STANDBY
795 * means it's doing something,
796 * otherwise fall through.
798 if (dapm->idle_bias_off) {
799 dev_dbg(component->dev,
800 "ASoC: idle_bias_off CODEC on over suspend\n");
804 case SND_SOC_BIAS_OFF:
805 if (component->suspend)
806 component->suspend(component);
807 component->suspended = 1;
808 if (component->regmap)
809 regcache_mark_dirty(component->regmap);
810 /* deactivate pins to sleep state */
811 pinctrl_pm_select_sleep_state(component->dev);
814 dev_dbg(component->dev,
815 "ASoC: COMPONENT is on over suspend\n");
821 list_for_each_entry(rtd, &card->rtd_list, list) {
822 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
824 if (rtd->dai_link->ignore_suspend)
827 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
828 cpu_dai->driver->suspend(cpu_dai);
830 /* deactivate pins to sleep state */
831 pinctrl_pm_select_sleep_state(cpu_dai->dev);
834 if (card->suspend_post)
835 card->suspend_post(card);
839 EXPORT_SYMBOL_GPL(snd_soc_suspend);
841 /* deferred resume work, so resume can complete before we finished
842 * setting our codec back up, which can be very slow on I2C
844 static void soc_resume_deferred(struct work_struct *work)
846 struct snd_soc_card *card =
847 container_of(work, struct snd_soc_card, deferred_resume_work);
848 struct snd_soc_pcm_runtime *rtd;
849 struct snd_soc_component *component;
852 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
853 * so userspace apps are blocked from touching us
856 dev_dbg(card->dev, "ASoC: starting resume work\n");
858 /* Bring us up into D2 so that DAPM starts enabling things */
859 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
861 if (card->resume_pre)
862 card->resume_pre(card);
864 /* resume control bus DAIs */
865 list_for_each_entry(rtd, &card->rtd_list, list) {
866 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
868 if (rtd->dai_link->ignore_suspend)
871 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
872 cpu_dai->driver->resume(cpu_dai);
875 list_for_each_entry(component, &card->component_dev_list, card_list) {
876 if (component->suspended) {
877 if (component->resume)
878 component->resume(component);
879 component->suspended = 0;
883 list_for_each_entry(rtd, &card->rtd_list, list) {
885 if (rtd->dai_link->ignore_suspend)
888 snd_soc_dapm_stream_event(rtd,
889 SNDRV_PCM_STREAM_PLAYBACK,
890 SND_SOC_DAPM_STREAM_RESUME);
892 snd_soc_dapm_stream_event(rtd,
893 SNDRV_PCM_STREAM_CAPTURE,
894 SND_SOC_DAPM_STREAM_RESUME);
897 /* unmute any active DACs */
898 list_for_each_entry(rtd, &card->rtd_list, list) {
900 if (rtd->dai_link->ignore_suspend)
903 for (i = 0; i < rtd->num_codecs; i++) {
904 struct snd_soc_dai *dai = rtd->codec_dais[i];
905 struct snd_soc_dai_driver *drv = dai->driver;
907 if (drv->ops->digital_mute && dai->playback_active)
908 drv->ops->digital_mute(dai, 0);
912 list_for_each_entry(rtd, &card->rtd_list, list) {
913 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
915 if (rtd->dai_link->ignore_suspend)
918 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
919 cpu_dai->driver->resume(cpu_dai);
922 if (card->resume_post)
923 card->resume_post(card);
925 dev_dbg(card->dev, "ASoC: resume work completed\n");
927 /* Recheck all endpoints too, their state is affected by suspend */
928 dapm_mark_endpoints_dirty(card);
929 snd_soc_dapm_sync(&card->dapm);
931 /* userspace can access us now we are back as we were before */
932 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
935 /* powers up audio subsystem after a suspend */
936 int snd_soc_resume(struct device *dev)
938 struct snd_soc_card *card = dev_get_drvdata(dev);
939 bool bus_control = false;
940 struct snd_soc_pcm_runtime *rtd;
942 /* If the card is not initialized yet there is nothing to do */
943 if (!card->instantiated)
946 /* activate pins from sleep state */
947 list_for_each_entry(rtd, &card->rtd_list, list) {
948 struct snd_soc_dai **codec_dais = rtd->codec_dais;
949 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
953 pinctrl_pm_select_default_state(cpu_dai->dev);
955 for (j = 0; j < rtd->num_codecs; j++) {
956 struct snd_soc_dai *codec_dai = codec_dais[j];
957 if (codec_dai->active)
958 pinctrl_pm_select_default_state(codec_dai->dev);
963 * DAIs that also act as the control bus master might have other drivers
964 * hanging off them so need to resume immediately. Other drivers don't
965 * have that problem and may take a substantial amount of time to resume
966 * due to I/O costs and anti-pop so handle them out of line.
968 list_for_each_entry(rtd, &card->rtd_list, list) {
969 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
970 bus_control |= cpu_dai->driver->bus_control;
973 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
974 soc_resume_deferred(&card->deferred_resume_work);
976 dev_dbg(dev, "ASoC: Scheduling resume work\n");
977 if (!schedule_work(&card->deferred_resume_work))
978 dev_err(dev, "ASoC: resume work item may be lost\n");
983 EXPORT_SYMBOL_GPL(snd_soc_resume);
985 #define snd_soc_suspend NULL
986 #define snd_soc_resume NULL
989 static const struct snd_soc_dai_ops null_dai_ops = {
992 static struct snd_soc_component *soc_find_component(
993 const struct device_node *of_node, const char *name)
995 struct snd_soc_component *component;
997 lockdep_assert_held(&client_mutex);
999 list_for_each_entry(component, &component_list, list) {
1001 if (component->dev->of_node == of_node)
1003 } else if (strcmp(component->name, name) == 0) {
1012 * snd_soc_find_dai - Find a registered DAI
1014 * @dlc: name of the DAI or the DAI driver and optional component info to match
1016 * This function will search all registered components and their DAIs to
1017 * find the DAI of the same name. The component's of_node and name
1018 * should also match if being specified.
1020 * Return: pointer of DAI, or NULL if not found.
1022 struct snd_soc_dai *snd_soc_find_dai(
1023 const struct snd_soc_dai_link_component *dlc)
1025 struct snd_soc_component *component;
1026 struct snd_soc_dai *dai;
1027 struct device_node *component_of_node;
1029 lockdep_assert_held(&client_mutex);
1031 /* Find CPU DAI from registered DAIs*/
1032 list_for_each_entry(component, &component_list, list) {
1033 component_of_node = component->dev->of_node;
1034 if (!component_of_node && component->dev->parent)
1035 component_of_node = component->dev->parent->of_node;
1037 if (dlc->of_node && component_of_node != dlc->of_node)
1039 if (dlc->name && strcmp(component->name, dlc->name))
1041 list_for_each_entry(dai, &component->dai_list, list) {
1042 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
1043 && (!dai->driver->name
1044 || strcmp(dai->driver->name, dlc->dai_name)))
1053 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
1057 * snd_soc_find_dai_link - Find a DAI link
1060 * @id: DAI link ID to match
1061 * @name: DAI link name to match, optional
1062 * @stream_name: DAI link stream name to match, optional
1064 * This function will search all existing DAI links of the soc card to
1065 * find the link of the same ID. Since DAI links may not have their
1066 * unique ID, so name and stream name should also match if being
1069 * Return: pointer of DAI link, or NULL if not found.
1071 struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
1072 int id, const char *name,
1073 const char *stream_name)
1075 struct snd_soc_dai_link *link, *_link;
1077 lockdep_assert_held(&client_mutex);
1079 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1083 if (name && (!link->name || strcmp(name, link->name)))
1086 if (stream_name && (!link->stream_name
1087 || strcmp(stream_name, link->stream_name)))
1095 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
1097 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
1098 struct snd_soc_dai_link *dai_link)
1100 struct snd_soc_pcm_runtime *rtd;
1102 list_for_each_entry(rtd, &card->rtd_list, list) {
1103 if (rtd->dai_link == dai_link)
1110 static int soc_bind_dai_link(struct snd_soc_card *card,
1111 struct snd_soc_dai_link *dai_link)
1113 struct snd_soc_pcm_runtime *rtd;
1114 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
1115 struct snd_soc_dai_link_component cpu_dai_component;
1116 struct snd_soc_component *component;
1117 struct snd_soc_dai **codec_dais;
1118 struct snd_soc_platform *platform;
1119 struct device_node *platform_of_node;
1120 const char *platform_name;
1123 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
1125 if (soc_is_dai_link_bound(card, dai_link)) {
1126 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
1131 rtd = soc_new_pcm_runtime(card, dai_link);
1135 cpu_dai_component.name = dai_link->cpu_name;
1136 cpu_dai_component.of_node = dai_link->cpu_of_node;
1137 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
1138 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
1139 if (!rtd->cpu_dai) {
1140 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
1141 dai_link->cpu_dai_name);
1144 snd_soc_rtdcom_add(rtd, rtd->cpu_dai->component);
1146 rtd->num_codecs = dai_link->num_codecs;
1148 /* Find CODEC from registered CODECs */
1149 codec_dais = rtd->codec_dais;
1150 for (i = 0; i < rtd->num_codecs; i++) {
1151 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
1152 if (!codec_dais[i]) {
1153 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
1154 codecs[i].dai_name);
1157 snd_soc_rtdcom_add(rtd, codec_dais[i]->component);
1160 /* Single codec links expect codec and codec_dai in runtime data */
1161 rtd->codec_dai = codec_dais[0];
1162 rtd->codec = rtd->codec_dai->codec;
1164 /* if there's no platform we match on the empty platform */
1165 platform_name = dai_link->platform_name;
1166 if (!platform_name && !dai_link->platform_of_node)
1167 platform_name = "snd-soc-dummy";
1169 /* find one from the set of registered platforms */
1170 list_for_each_entry(component, &component_list, list) {
1171 platform_of_node = component->dev->of_node;
1172 if (!platform_of_node && component->dev->parent->of_node)
1173 platform_of_node = component->dev->parent->of_node;
1175 if (dai_link->platform_of_node) {
1176 if (platform_of_node != dai_link->platform_of_node)
1179 if (strcmp(component->name, platform_name))
1183 snd_soc_rtdcom_add(rtd, component);
1186 /* find one from the set of registered platforms */
1187 list_for_each_entry(platform, &platform_list, list) {
1188 platform_of_node = platform->dev->of_node;
1189 if (!platform_of_node && platform->dev->parent->of_node)
1190 platform_of_node = platform->dev->parent->of_node;
1192 if (dai_link->platform_of_node) {
1193 if (platform_of_node != dai_link->platform_of_node)
1196 if (strcmp(platform->component.name, platform_name))
1200 rtd->platform = platform;
1202 if (!rtd->platform) {
1203 dev_err(card->dev, "ASoC: platform %s not registered\n",
1204 dai_link->platform_name);
1208 soc_add_pcm_runtime(card, rtd);
1212 soc_free_pcm_runtime(rtd);
1213 return -EPROBE_DEFER;
1216 static void soc_remove_component(struct snd_soc_component *component)
1218 if (!component->card)
1221 list_del(&component->card_list);
1223 if (component->remove)
1224 component->remove(component);
1226 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
1228 soc_cleanup_component_debugfs(component);
1229 component->card = NULL;
1230 module_put(component->dev->driver->owner);
1233 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
1237 if (dai && dai->probed &&
1238 dai->driver->remove_order == order) {
1239 if (dai->driver->remove) {
1240 err = dai->driver->remove(dai);
1243 "ASoC: failed to remove %s: %d\n",
1250 static void soc_remove_link_dais(struct snd_soc_card *card,
1251 struct snd_soc_pcm_runtime *rtd, int order)
1255 /* unregister the rtd device */
1256 if (rtd->dev_registered) {
1257 device_unregister(rtd->dev);
1258 rtd->dev_registered = 0;
1261 /* remove the CODEC DAI */
1262 for (i = 0; i < rtd->num_codecs; i++)
1263 soc_remove_dai(rtd->codec_dais[i], order);
1265 soc_remove_dai(rtd->cpu_dai, order);
1268 static void soc_remove_link_components(struct snd_soc_card *card,
1269 struct snd_soc_pcm_runtime *rtd, int order)
1271 struct snd_soc_component *component;
1272 struct snd_soc_rtdcom_list *rtdcom;
1274 for_each_rtdcom(rtd, rtdcom) {
1275 component = rtdcom->component;
1277 if (component->driver->remove_order == order)
1278 soc_remove_component(component);
1282 static void soc_remove_dai_links(struct snd_soc_card *card)
1285 struct snd_soc_pcm_runtime *rtd;
1286 struct snd_soc_dai_link *link, *_link;
1288 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1290 list_for_each_entry(rtd, &card->rtd_list, list)
1291 soc_remove_link_dais(card, rtd, order);
1294 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1296 list_for_each_entry(rtd, &card->rtd_list, list)
1297 soc_remove_link_components(card, rtd, order);
1300 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1301 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1302 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1305 list_del(&link->list);
1306 card->num_dai_links--;
1310 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1311 struct snd_soc_dai_link *dai_link)
1313 /* Legacy codec/codec_dai link is a single entry in multicodec */
1314 if (dai_link->codec_name || dai_link->codec_of_node ||
1315 dai_link->codec_dai_name) {
1316 dai_link->num_codecs = 1;
1318 dai_link->codecs = devm_kzalloc(card->dev,
1319 sizeof(struct snd_soc_dai_link_component),
1321 if (!dai_link->codecs)
1324 dai_link->codecs[0].name = dai_link->codec_name;
1325 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1326 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1329 if (!dai_link->codecs) {
1330 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1337 static int soc_init_dai_link(struct snd_soc_card *card,
1338 struct snd_soc_dai_link *link)
1342 ret = snd_soc_init_multicodec(card, link);
1344 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1348 for (i = 0; i < link->num_codecs; i++) {
1350 * Codec must be specified by 1 of name or OF node,
1351 * not both or neither.
1353 if (!!link->codecs[i].name ==
1354 !!link->codecs[i].of_node) {
1355 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1359 /* Codec DAI name must be specified */
1360 if (!link->codecs[i].dai_name) {
1361 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1368 * Platform may be specified by either name or OF node, but
1369 * can be left unspecified, and a dummy platform will be used.
1371 if (link->platform_name && link->platform_of_node) {
1373 "ASoC: Both platform name/of_node are set for %s\n",
1379 * CPU device may be specified by either name or OF node, but
1380 * can be left unspecified, and will be matched based on DAI
1383 if (link->cpu_name && link->cpu_of_node) {
1385 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1390 * At least one of CPU DAI name or CPU device name/node must be
1393 if (!link->cpu_dai_name &&
1394 !(link->cpu_name || link->cpu_of_node)) {
1396 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1404 void snd_soc_disconnect_sync(struct device *dev)
1406 struct snd_soc_component *component = snd_soc_lookup_component(dev, NULL);
1408 if (!component || !component->card)
1411 snd_card_disconnect_sync(component->card->snd_card);
1415 * snd_soc_add_dai_link - Add a DAI link dynamically
1416 * @card: The ASoC card to which the DAI link is added
1417 * @dai_link: The new DAI link to add
1419 * This function adds a DAI link to the ASoC card's link list.
1421 * Note: Topology can use this API to add DAI links when probing the
1422 * topology component. And machine drivers can still define static
1423 * DAI links in dai_link array.
1425 int snd_soc_add_dai_link(struct snd_soc_card *card,
1426 struct snd_soc_dai_link *dai_link)
1428 if (dai_link->dobj.type
1429 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1430 dev_err(card->dev, "Invalid dai link type %d\n",
1431 dai_link->dobj.type);
1435 lockdep_assert_held(&client_mutex);
1436 /* Notify the machine driver for extra initialization
1437 * on the link created by topology.
1439 if (dai_link->dobj.type && card->add_dai_link)
1440 card->add_dai_link(card, dai_link);
1442 list_add_tail(&dai_link->list, &card->dai_link_list);
1443 card->num_dai_links++;
1447 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1450 * snd_soc_remove_dai_link - Remove a DAI link from the list
1451 * @card: The ASoC card that owns the link
1452 * @dai_link: The DAI link to remove
1454 * This function removes a DAI link from the ASoC card's link list.
1456 * For DAI links previously added by topology, topology should
1457 * remove them by using the dobj embedded in the link.
1459 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1460 struct snd_soc_dai_link *dai_link)
1462 struct snd_soc_dai_link *link, *_link;
1464 if (dai_link->dobj.type
1465 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1466 dev_err(card->dev, "Invalid dai link type %d\n",
1467 dai_link->dobj.type);
1471 lockdep_assert_held(&client_mutex);
1472 /* Notify the machine driver for extra destruction
1473 * on the link created by topology.
1475 if (dai_link->dobj.type && card->remove_dai_link)
1476 card->remove_dai_link(card, dai_link);
1478 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1479 if (link == dai_link) {
1480 list_del(&link->list);
1481 card->num_dai_links--;
1486 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1488 static void soc_set_name_prefix(struct snd_soc_card *card,
1489 struct snd_soc_component *component)
1493 if (card->codec_conf == NULL)
1496 for (i = 0; i < card->num_configs; i++) {
1497 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1498 if (map->of_node && component->dev->of_node != map->of_node)
1500 if (map->dev_name && strcmp(component->name, map->dev_name))
1502 component->name_prefix = map->name_prefix;
1507 static int soc_probe_component(struct snd_soc_card *card,
1508 struct snd_soc_component *component)
1510 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1511 struct snd_soc_dai *dai;
1514 if (!strcmp(component->name, "snd-soc-dummy"))
1517 if (component->card) {
1518 if (component->card != card) {
1519 dev_err(component->dev,
1520 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1521 card->name, component->card->name);
1527 if (!try_module_get(component->dev->driver->owner))
1530 component->card = card;
1532 soc_set_name_prefix(card, component);
1534 soc_init_component_debugfs(component);
1536 if (component->driver->dapm_widgets) {
1537 ret = snd_soc_dapm_new_controls(dapm,
1538 component->driver->dapm_widgets,
1539 component->driver->num_dapm_widgets);
1542 dev_err(component->dev,
1543 "Failed to create new controls %d\n", ret);
1548 list_for_each_entry(dai, &component->dai_list, list) {
1549 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1551 dev_err(component->dev,
1552 "Failed to create DAI widgets %d\n", ret);
1557 if (component->probe) {
1558 ret = component->probe(component);
1560 dev_err(component->dev,
1561 "ASoC: failed to probe component %d\n", ret);
1565 WARN(dapm->idle_bias_off &&
1566 dapm->bias_level != SND_SOC_BIAS_OFF,
1567 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1571 /* machine specific init */
1572 if (component->init) {
1573 ret = component->init(component);
1575 dev_err(component->dev,
1576 "Failed to do machine specific init %d\n", ret);
1581 if (component->driver->controls)
1582 snd_soc_add_component_controls(component,
1583 component->driver->controls,
1584 component->driver->num_controls);
1585 if (component->driver->dapm_routes)
1586 snd_soc_dapm_add_routes(dapm,
1587 component->driver->dapm_routes,
1588 component->driver->num_dapm_routes);
1590 list_add(&dapm->list, &card->dapm_list);
1591 list_add(&component->card_list, &card->component_dev_list);
1596 soc_cleanup_component_debugfs(component);
1597 component->card = NULL;
1598 module_put(component->dev->driver->owner);
1603 static void rtd_release(struct device *dev)
1608 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1613 /* register the rtd device */
1614 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1617 device_initialize(rtd->dev);
1618 rtd->dev->parent = rtd->card->dev;
1619 rtd->dev->release = rtd_release;
1620 rtd->dev->groups = soc_dev_attr_groups;
1621 dev_set_name(rtd->dev, "%s", name);
1622 dev_set_drvdata(rtd->dev, rtd);
1623 mutex_init(&rtd->pcm_mutex);
1624 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1625 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1626 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1627 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1628 ret = device_add(rtd->dev);
1630 /* calling put_device() here to free the rtd->dev */
1631 put_device(rtd->dev);
1632 dev_err(rtd->card->dev,
1633 "ASoC: failed to register runtime device: %d\n", ret);
1636 rtd->dev_registered = 1;
1640 static int soc_probe_link_components(struct snd_soc_card *card,
1641 struct snd_soc_pcm_runtime *rtd,
1644 struct snd_soc_component *component;
1645 struct snd_soc_rtdcom_list *rtdcom;
1648 for_each_rtdcom(rtd, rtdcom) {
1649 component = rtdcom->component;
1651 if (component->driver->probe_order == order) {
1652 ret = soc_probe_component(card, component);
1661 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1665 if (!dai->probed && dai->driver->probe_order == order) {
1666 if (dai->driver->probe) {
1667 ret = dai->driver->probe(dai);
1670 "ASoC: failed to probe DAI %s: %d\n",
1682 static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais,
1683 struct snd_soc_pcm_runtime *rtd)
1687 for (i = 0; i < num_dais; ++i) {
1688 struct snd_soc_dai_driver *drv = dais[i]->driver;
1690 if (!rtd->dai_link->no_pcm && drv->pcm_new)
1691 ret = drv->pcm_new(rtd, dais[i]);
1693 dev_err(dais[i]->dev,
1694 "ASoC: Failed to bind %s with pcm device\n",
1703 static int soc_link_dai_widgets(struct snd_soc_card *card,
1704 struct snd_soc_dai_link *dai_link,
1705 struct snd_soc_pcm_runtime *rtd)
1707 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1708 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1709 struct snd_soc_dapm_widget *sink, *source;
1712 if (rtd->num_codecs > 1)
1713 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1715 /* link the DAI widgets */
1716 sink = codec_dai->playback_widget;
1717 source = cpu_dai->capture_widget;
1718 if (sink && source) {
1719 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1720 dai_link->num_params,
1723 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1724 sink->name, source->name, ret);
1729 sink = cpu_dai->playback_widget;
1730 source = codec_dai->capture_widget;
1731 if (sink && source) {
1732 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1733 dai_link->num_params,
1736 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1737 sink->name, source->name, ret);
1745 static int soc_probe_link_dais(struct snd_soc_card *card,
1746 struct snd_soc_pcm_runtime *rtd, int order)
1748 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1749 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1752 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1753 card->name, rtd->num, order);
1755 /* set default power off timeout */
1756 rtd->pmdown_time = pmdown_time;
1758 ret = soc_probe_dai(cpu_dai, order);
1762 /* probe the CODEC DAI */
1763 for (i = 0; i < rtd->num_codecs; i++) {
1764 ret = soc_probe_dai(rtd->codec_dais[i], order);
1769 /* complete DAI probe during last probe */
1770 if (order != SND_SOC_COMP_ORDER_LAST)
1773 /* do machine specific initialization */
1774 if (dai_link->init) {
1775 ret = dai_link->init(rtd);
1777 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1778 dai_link->name, ret);
1783 if (dai_link->dai_fmt)
1784 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1786 ret = soc_post_component_init(rtd, dai_link->name);
1790 #ifdef CONFIG_DEBUG_FS
1791 /* add DPCM sysfs entries */
1792 if (dai_link->dynamic)
1793 soc_dpcm_debugfs_add(rtd);
1796 if (cpu_dai->driver->compress_new) {
1797 /*create compress_device"*/
1798 ret = cpu_dai->driver->compress_new(rtd, rtd->num);
1800 dev_err(card->dev, "ASoC: can't create compress %s\n",
1801 dai_link->stream_name);
1806 if (!dai_link->params) {
1807 /* create the pcm */
1808 ret = soc_new_pcm(rtd, rtd->num);
1810 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1811 dai_link->stream_name, ret);
1814 ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd);
1817 ret = soc_link_dai_pcm_new(rtd->codec_dais,
1818 rtd->num_codecs, rtd);
1822 INIT_DELAYED_WORK(&rtd->delayed_work,
1823 codec2codec_close_delayed_work);
1825 /* link the DAI widgets */
1826 ret = soc_link_dai_widgets(card, dai_link, rtd);
1835 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1837 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1838 struct snd_soc_component *component;
1840 struct device_node *codec_of_node;
1842 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1843 /* codecs, usually analog devices */
1844 name = aux_dev->codec_name;
1845 codec_of_node = aux_dev->codec_of_node;
1846 component = soc_find_component(codec_of_node, name);
1849 name = of_node_full_name(codec_of_node);
1852 } else if (aux_dev->name) {
1853 /* generic components */
1854 name = aux_dev->name;
1855 component = soc_find_component(NULL, name);
1859 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1863 component->init = aux_dev->init;
1864 list_add(&component->card_aux_list, &card->aux_comp_list);
1869 dev_err(card->dev, "ASoC: %s not registered\n", name);
1870 return -EPROBE_DEFER;
1873 static int soc_probe_aux_devices(struct snd_soc_card *card)
1875 struct snd_soc_component *comp;
1879 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1881 list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) {
1882 if (comp->driver->probe_order == order) {
1883 ret = soc_probe_component(card, comp);
1886 "ASoC: failed to probe aux component %s %d\n",
1897 static void soc_remove_aux_devices(struct snd_soc_card *card)
1899 struct snd_soc_component *comp, *_comp;
1902 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1904 list_for_each_entry_safe(comp, _comp,
1905 &card->aux_comp_list, card_aux_list) {
1907 if (comp->driver->remove_order == order) {
1908 soc_remove_component(comp);
1909 /* remove it from the card's aux_comp_list */
1910 list_del(&comp->card_aux_list);
1916 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1920 if (codec->cache_init)
1923 ret = snd_soc_cache_init(codec);
1926 "ASoC: Failed to set cache compression type: %d\n",
1930 codec->cache_init = 1;
1935 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1936 * @rtd: The runtime for which the DAI link format should be changed
1937 * @dai_fmt: The new DAI link format
1939 * This function updates the DAI link format for all DAIs connected to the DAI
1940 * link for the specified runtime.
1942 * Note: For setups with a static format set the dai_fmt field in the
1943 * corresponding snd_dai_link struct instead of using this function.
1945 * Returns 0 on success, otherwise a negative error code.
1947 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1948 unsigned int dai_fmt)
1950 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1951 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1955 for (i = 0; i < rtd->num_codecs; i++) {
1956 struct snd_soc_dai *codec_dai = codec_dais[i];
1958 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1959 if (ret != 0 && ret != -ENOTSUPP) {
1960 dev_warn(codec_dai->dev,
1961 "ASoC: Failed to set DAI format: %d\n", ret);
1966 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1967 /* the component which has non_legacy_dai_naming is Codec */
1968 if (cpu_dai->codec ||
1969 cpu_dai->component->driver->non_legacy_dai_naming) {
1970 unsigned int inv_dai_fmt;
1972 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1973 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1974 case SND_SOC_DAIFMT_CBM_CFM:
1975 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1977 case SND_SOC_DAIFMT_CBM_CFS:
1978 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1980 case SND_SOC_DAIFMT_CBS_CFM:
1981 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1983 case SND_SOC_DAIFMT_CBS_CFS:
1984 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1988 dai_fmt = inv_dai_fmt;
1991 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1992 if (ret != 0 && ret != -ENOTSUPP) {
1993 dev_warn(cpu_dai->dev,
1994 "ASoC: Failed to set DAI format: %d\n", ret);
2000 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
2004 /* Trim special characters, and replace '-' with '_' since '-' is used to
2005 * separate different DMI fields in the card long name. Only number and
2006 * alphabet characters and a few separator characters are kept.
2008 static void cleanup_dmi_name(char *name)
2012 for (i = 0; name[i]; i++) {
2013 if (isalnum(name[i]) || (name[i] == '.')
2014 || (name[i] == '_'))
2015 name[j++] = name[i];
2016 else if (name[i] == '-')
2023 /* Check if a DMI field is valid, i.e. not containing any string
2024 * in the black list.
2026 static int is_dmi_valid(const char *field)
2030 while (dmi_blacklist[i]) {
2031 if (strstr(field, dmi_blacklist[i]))
2040 * snd_soc_set_dmi_name() - Register DMI names to card
2041 * @card: The card to register DMI names
2042 * @flavour: The flavour "differentiator" for the card amongst its peers.
2044 * An Intel machine driver may be used by many different devices but are
2045 * difficult for userspace to differentiate, since machine drivers ususally
2046 * use their own name as the card short name and leave the card long name
2047 * blank. To differentiate such devices and fix bugs due to lack of
2048 * device-specific configurations, this function allows DMI info to be used
2049 * as the sound card long name, in the format of
2050 * "vendor-product-version-board"
2051 * (Character '-' is used to separate different DMI fields here).
2052 * This will help the user space to load the device-specific Use Case Manager
2053 * (UCM) configurations for the card.
2055 * Possible card long names may be:
2056 * DellInc.-XPS139343-01-0310JH
2057 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
2058 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
2060 * This function also supports flavoring the card longname to provide
2061 * the extra differentiation, like "vendor-product-version-board-flavor".
2063 * We only keep number and alphabet characters and a few separator characters
2064 * in the card long name since UCM in the user space uses the card long names
2065 * as card configuration directory names and AudoConf cannot support special
2066 * charactors like SPACE.
2068 * Returns 0 on success, otherwise a negative error code.
2070 int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
2072 const char *vendor, *product, *product_version, *board;
2073 size_t longname_buf_size = sizeof(card->snd_card->longname);
2076 if (card->long_name)
2077 return 0; /* long name already set by driver or from DMI */
2079 /* make up dmi long name as: vendor.product.version.board */
2080 vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
2081 if (!vendor || !is_dmi_valid(vendor)) {
2082 dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
2087 snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
2089 cleanup_dmi_name(card->dmi_longname);
2091 product = dmi_get_system_info(DMI_PRODUCT_NAME);
2092 if (product && is_dmi_valid(product)) {
2093 len = strlen(card->dmi_longname);
2094 snprintf(card->dmi_longname + len,
2095 longname_buf_size - len,
2098 len++; /* skip the separator "-" */
2099 if (len < longname_buf_size)
2100 cleanup_dmi_name(card->dmi_longname + len);
2102 /* some vendors like Lenovo may only put a self-explanatory
2103 * name in the product version field
2105 product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
2106 if (product_version && is_dmi_valid(product_version)) {
2107 len = strlen(card->dmi_longname);
2108 snprintf(card->dmi_longname + len,
2109 longname_buf_size - len,
2110 "-%s", product_version);
2113 if (len < longname_buf_size)
2114 cleanup_dmi_name(card->dmi_longname + len);
2118 board = dmi_get_system_info(DMI_BOARD_NAME);
2119 if (board && is_dmi_valid(board)) {
2120 len = strlen(card->dmi_longname);
2121 snprintf(card->dmi_longname + len,
2122 longname_buf_size - len,
2126 if (len < longname_buf_size)
2127 cleanup_dmi_name(card->dmi_longname + len);
2128 } else if (!product) {
2129 /* fall back to using legacy name */
2130 dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
2134 /* Add flavour to dmi long name */
2136 len = strlen(card->dmi_longname);
2137 snprintf(card->dmi_longname + len,
2138 longname_buf_size - len,
2142 if (len < longname_buf_size)
2143 cleanup_dmi_name(card->dmi_longname + len);
2146 /* set the card long name */
2147 card->long_name = card->dmi_longname;
2151 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name);
2152 #endif /* CONFIG_DMI */
2154 static int snd_soc_instantiate_card(struct snd_soc_card *card)
2156 struct snd_soc_codec *codec;
2157 struct snd_soc_pcm_runtime *rtd;
2158 struct snd_soc_dai_link *dai_link;
2161 mutex_lock(&client_mutex);
2162 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
2165 for (i = 0; i < card->num_links; i++) {
2166 ret = soc_bind_dai_link(card, &card->dai_link[i]);
2171 /* bind aux_devs too */
2172 for (i = 0; i < card->num_aux_devs; i++) {
2173 ret = soc_bind_aux_dev(card, i);
2178 /* add predefined DAI links to the list */
2179 for (i = 0; i < card->num_links; i++)
2180 snd_soc_add_dai_link(card, card->dai_link+i);
2182 /* initialize the register cache for each available codec */
2183 list_for_each_entry(codec, &codec_list, list) {
2184 if (codec->cache_init)
2186 ret = snd_soc_init_codec_cache(codec);
2191 /* card bind complete so register a sound card */
2192 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
2193 card->owner, 0, &card->snd_card);
2196 "ASoC: can't create sound card for card %s: %d\n",
2201 soc_init_card_debugfs(card);
2203 card->dapm.bias_level = SND_SOC_BIAS_OFF;
2204 card->dapm.dev = card->dev;
2205 card->dapm.card = card;
2206 list_add(&card->dapm.list, &card->dapm_list);
2208 #ifdef CONFIG_DEBUG_FS
2209 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
2212 #ifdef CONFIG_PM_SLEEP
2213 /* deferred resume work */
2214 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
2217 if (card->dapm_widgets)
2218 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
2219 card->num_dapm_widgets);
2221 if (card->of_dapm_widgets)
2222 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
2223 card->num_of_dapm_widgets);
2225 /* initialise the sound card only once */
2227 ret = card->probe(card);
2229 goto card_probe_error;
2232 /* probe all components used by DAI links on this card */
2233 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2235 list_for_each_entry(rtd, &card->rtd_list, list) {
2236 ret = soc_probe_link_components(card, rtd, order);
2239 "ASoC: failed to instantiate card %d\n",
2246 /* probe auxiliary components */
2247 ret = soc_probe_aux_devices(card);
2251 /* Find new DAI links added during probing components and bind them.
2252 * Components with topology may bring new DAIs and DAI links.
2254 list_for_each_entry(dai_link, &card->dai_link_list, list) {
2255 if (soc_is_dai_link_bound(card, dai_link))
2258 ret = soc_init_dai_link(card, dai_link);
2261 ret = soc_bind_dai_link(card, dai_link);
2266 /* probe all DAI links on this card */
2267 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2269 list_for_each_entry(rtd, &card->rtd_list, list) {
2270 ret = soc_probe_link_dais(card, rtd, order);
2273 "ASoC: failed to instantiate card %d\n",
2280 snd_soc_dapm_link_dai_widgets(card);
2281 snd_soc_dapm_connect_dai_link_widgets(card);
2284 snd_soc_add_card_controls(card, card->controls, card->num_controls);
2286 if (card->dapm_routes)
2287 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
2288 card->num_dapm_routes);
2290 if (card->of_dapm_routes)
2291 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
2292 card->num_of_dapm_routes);
2294 /* try to set some sane longname if DMI is available */
2295 snd_soc_set_dmi_name(card, NULL);
2297 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
2299 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
2300 "%s", card->long_name ? card->long_name : card->name);
2301 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
2302 "%s", card->driver_name ? card->driver_name : card->name);
2303 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
2304 switch (card->snd_card->driver[i]) {
2310 if (!isalnum(card->snd_card->driver[i]))
2311 card->snd_card->driver[i] = '_';
2316 if (card->late_probe) {
2317 ret = card->late_probe(card);
2319 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2321 goto probe_aux_dev_err;
2325 snd_soc_dapm_new_widgets(card);
2327 ret = snd_card_register(card->snd_card);
2329 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2331 goto probe_aux_dev_err;
2334 card->instantiated = 1;
2335 snd_soc_dapm_sync(&card->dapm);
2336 mutex_unlock(&card->mutex);
2337 mutex_unlock(&client_mutex);
2342 soc_remove_aux_devices(card);
2345 soc_remove_dai_links(card);
2351 snd_soc_dapm_free(&card->dapm);
2352 soc_cleanup_card_debugfs(card);
2353 snd_card_free(card->snd_card);
2356 soc_remove_pcm_runtimes(card);
2357 mutex_unlock(&card->mutex);
2358 mutex_unlock(&client_mutex);
2363 /* probes a new socdev */
2364 static int soc_probe(struct platform_device *pdev)
2366 struct snd_soc_card *card = platform_get_drvdata(pdev);
2369 * no card, so machine driver should be registering card
2370 * we should not be here in that case so ret error
2375 dev_warn(&pdev->dev,
2376 "ASoC: machine %s should use snd_soc_register_card()\n",
2379 /* Bodge while we unpick instantiation */
2380 card->dev = &pdev->dev;
2382 return snd_soc_register_card(card);
2385 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2387 struct snd_soc_pcm_runtime *rtd;
2389 /* make sure any delayed work runs */
2390 list_for_each_entry(rtd, &card->rtd_list, list)
2391 flush_delayed_work(&rtd->delayed_work);
2393 /* free the ALSA card at first; this syncs with pending operations */
2394 snd_card_free(card->snd_card);
2396 /* remove and free each DAI */
2397 soc_remove_dai_links(card);
2398 soc_remove_pcm_runtimes(card);
2400 /* remove auxiliary devices */
2401 soc_remove_aux_devices(card);
2403 snd_soc_dapm_free(&card->dapm);
2404 soc_cleanup_card_debugfs(card);
2406 /* remove the card */
2413 /* removes a socdev */
2414 static int soc_remove(struct platform_device *pdev)
2416 struct snd_soc_card *card = platform_get_drvdata(pdev);
2418 snd_soc_unregister_card(card);
2422 int snd_soc_poweroff(struct device *dev)
2424 struct snd_soc_card *card = dev_get_drvdata(dev);
2425 struct snd_soc_pcm_runtime *rtd;
2427 if (!card->instantiated)
2430 /* Flush out pmdown_time work - we actually do want to run it
2431 * now, we're shutting down so no imminent restart. */
2432 list_for_each_entry(rtd, &card->rtd_list, list)
2433 flush_delayed_work(&rtd->delayed_work);
2435 snd_soc_dapm_shutdown(card);
2437 /* deactivate pins to sleep state */
2438 list_for_each_entry(rtd, &card->rtd_list, list) {
2439 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2442 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2443 for (i = 0; i < rtd->num_codecs; i++) {
2444 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
2445 pinctrl_pm_select_sleep_state(codec_dai->dev);
2451 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2453 const struct dev_pm_ops snd_soc_pm_ops = {
2454 .suspend = snd_soc_suspend,
2455 .resume = snd_soc_resume,
2456 .freeze = snd_soc_suspend,
2457 .thaw = snd_soc_resume,
2458 .poweroff = snd_soc_poweroff,
2459 .restore = snd_soc_resume,
2461 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2463 /* ASoC platform driver */
2464 static struct platform_driver soc_driver = {
2466 .name = "soc-audio",
2467 .pm = &snd_soc_pm_ops,
2470 .remove = soc_remove,
2474 * snd_soc_cnew - create new control
2475 * @_template: control template
2476 * @data: control private data
2477 * @long_name: control long name
2478 * @prefix: control name prefix
2480 * Create a new mixer control from a template control.
2482 * Returns 0 for success, else error.
2484 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2485 void *data, const char *long_name,
2488 struct snd_kcontrol_new template;
2489 struct snd_kcontrol *kcontrol;
2492 memcpy(&template, _template, sizeof(template));
2496 long_name = template.name;
2499 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2503 template.name = name;
2505 template.name = long_name;
2508 kcontrol = snd_ctl_new1(&template, data);
2514 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2516 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2517 const struct snd_kcontrol_new *controls, int num_controls,
2518 const char *prefix, void *data)
2522 for (i = 0; i < num_controls; i++) {
2523 const struct snd_kcontrol_new *control = &controls[i];
2524 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2525 control->name, prefix));
2527 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2528 control->name, err);
2536 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2539 struct snd_card *card = soc_card->snd_card;
2540 struct snd_kcontrol *kctl;
2542 if (unlikely(!name))
2545 list_for_each_entry(kctl, &card->controls, list)
2546 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2550 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2553 * snd_soc_add_component_controls - Add an array of controls to a component.
2555 * @component: Component to add controls to
2556 * @controls: Array of controls to add
2557 * @num_controls: Number of elements in the array
2559 * Return: 0 for success, else error.
2561 int snd_soc_add_component_controls(struct snd_soc_component *component,
2562 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2564 struct snd_card *card = component->card->snd_card;
2566 return snd_soc_add_controls(card, component->dev, controls,
2567 num_controls, component->name_prefix, component);
2569 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2572 * snd_soc_add_codec_controls - add an array of controls to a codec.
2573 * Convenience function to add a list of controls. Many codecs were
2574 * duplicating this code.
2576 * @codec: codec to add controls to
2577 * @controls: array of controls to add
2578 * @num_controls: number of elements in the array
2580 * Return 0 for success, else error.
2582 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2583 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2585 return snd_soc_add_component_controls(&codec->component, controls,
2588 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2591 * snd_soc_add_platform_controls - add an array of controls to a platform.
2592 * Convenience function to add a list of controls.
2594 * @platform: platform to add controls to
2595 * @controls: array of controls to add
2596 * @num_controls: number of elements in the array
2598 * Return 0 for success, else error.
2600 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2601 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2603 return snd_soc_add_component_controls(&platform->component, controls,
2606 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2609 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2610 * Convenience function to add a list of controls.
2612 * @soc_card: SoC card to add controls to
2613 * @controls: array of controls to add
2614 * @num_controls: number of elements in the array
2616 * Return 0 for success, else error.
2618 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2619 const struct snd_kcontrol_new *controls, int num_controls)
2621 struct snd_card *card = soc_card->snd_card;
2623 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2626 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2629 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2630 * Convienience function to add a list of controls.
2632 * @dai: DAI to add controls to
2633 * @controls: array of controls to add
2634 * @num_controls: number of elements in the array
2636 * Return 0 for success, else error.
2638 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2639 const struct snd_kcontrol_new *controls, int num_controls)
2641 struct snd_card *card = dai->component->card->snd_card;
2643 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2646 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2649 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2651 * @clk_id: DAI specific clock ID
2652 * @freq: new clock frequency in Hz
2653 * @dir: new clock direction - input/output.
2655 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2657 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2658 unsigned int freq, int dir)
2660 if (dai->driver->ops->set_sysclk)
2661 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2663 return snd_soc_component_set_sysclk(dai->component, clk_id, 0,
2666 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2669 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2671 * @clk_id: DAI specific clock ID
2672 * @source: Source for the clock
2673 * @freq: new clock frequency in Hz
2674 * @dir: new clock direction - input/output.
2676 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2678 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2679 int source, unsigned int freq, int dir)
2681 if (codec->driver->set_sysclk)
2682 return codec->driver->set_sysclk(codec, clk_id, source,
2687 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2690 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2691 * @component: COMPONENT
2692 * @clk_id: DAI specific clock ID
2693 * @source: Source for the clock
2694 * @freq: new clock frequency in Hz
2695 * @dir: new clock direction - input/output.
2697 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2699 int snd_soc_component_set_sysclk(struct snd_soc_component *component, int clk_id,
2700 int source, unsigned int freq, int dir)
2702 /* will be removed */
2703 if (component->set_sysclk)
2704 return component->set_sysclk(component, clk_id, source,
2707 if (component->driver->set_sysclk)
2708 return component->driver->set_sysclk(component, clk_id, source,
2713 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk);
2716 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2718 * @div_id: DAI specific clock divider ID
2719 * @div: new clock divisor.
2721 * Configures the clock dividers. This is used to derive the best DAI bit and
2722 * frame clocks from the system or master clock. It's best to set the DAI bit
2723 * and frame clocks as low as possible to save system power.
2725 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2726 int div_id, int div)
2728 if (dai->driver->ops->set_clkdiv)
2729 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2733 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2736 * snd_soc_dai_set_pll - configure DAI PLL.
2738 * @pll_id: DAI specific PLL ID
2739 * @source: DAI specific source for the PLL
2740 * @freq_in: PLL input clock frequency in Hz
2741 * @freq_out: requested PLL output clock frequency in Hz
2743 * Configures and enables PLL to generate output clock based on input clock.
2745 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2746 unsigned int freq_in, unsigned int freq_out)
2748 if (dai->driver->ops->set_pll)
2749 return dai->driver->ops->set_pll(dai, pll_id, source,
2752 return snd_soc_component_set_pll(dai->component, pll_id, source,
2755 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2758 * snd_soc_codec_set_pll - configure codec PLL.
2760 * @pll_id: DAI specific PLL ID
2761 * @source: DAI specific source for the PLL
2762 * @freq_in: PLL input clock frequency in Hz
2763 * @freq_out: requested PLL output clock frequency in Hz
2765 * Configures and enables PLL to generate output clock based on input clock.
2767 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2768 unsigned int freq_in, unsigned int freq_out)
2770 if (codec->driver->set_pll)
2771 return codec->driver->set_pll(codec, pll_id, source,
2776 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2779 * snd_soc_component_set_pll - configure component PLL.
2780 * @component: COMPONENT
2781 * @pll_id: DAI specific PLL ID
2782 * @source: DAI specific source for the PLL
2783 * @freq_in: PLL input clock frequency in Hz
2784 * @freq_out: requested PLL output clock frequency in Hz
2786 * Configures and enables PLL to generate output clock based on input clock.
2788 int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
2789 int source, unsigned int freq_in,
2790 unsigned int freq_out)
2792 /* will be removed */
2793 if (component->set_pll)
2794 return component->set_pll(component, pll_id, source,
2797 if (component->driver->set_pll)
2798 return component->driver->set_pll(component, pll_id, source,
2803 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll);
2806 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2808 * @ratio: Ratio of BCLK to Sample rate.
2810 * Configures the DAI for a preset BCLK to sample rate ratio.
2812 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2814 if (dai->driver->ops->set_bclk_ratio)
2815 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2819 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2822 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2824 * @fmt: SND_SOC_DAIFMT_* format value.
2826 * Configures the DAI hardware format and clocking.
2828 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2830 if (dai->driver == NULL)
2832 if (dai->driver->ops->set_fmt == NULL)
2834 return dai->driver->ops->set_fmt(dai, fmt);
2836 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2839 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2840 * @slots: Number of slots in use.
2841 * @tx_mask: bitmask representing active TX slots.
2842 * @rx_mask: bitmask representing active RX slots.
2844 * Generates the TDM tx and rx slot default masks for DAI.
2846 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2847 unsigned int *tx_mask,
2848 unsigned int *rx_mask)
2850 if (*tx_mask || *rx_mask)
2856 *tx_mask = (1 << slots) - 1;
2857 *rx_mask = (1 << slots) - 1;
2863 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2864 * @dai: The DAI to configure
2865 * @tx_mask: bitmask representing active TX slots.
2866 * @rx_mask: bitmask representing active RX slots.
2867 * @slots: Number of slots in use.
2868 * @slot_width: Width in bits for each slot.
2870 * This function configures the specified DAI for TDM operation. @slot contains
2871 * the total number of slots of the TDM stream and @slot_with the width of each
2872 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2873 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2874 * DAI should write to or read from. If a bit is set the corresponding slot is
2875 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2876 * the first slot, bit 1 to the second slot and so on. The first active slot
2877 * maps to the first channel of the DAI, the second active slot to the second
2878 * channel and so on.
2880 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2881 * @rx_mask and @slot_width will be ignored.
2883 * Returns 0 on success, a negative error code otherwise.
2885 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2886 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2888 if (dai->driver->ops->xlate_tdm_slot_mask)
2889 dai->driver->ops->xlate_tdm_slot_mask(slots,
2890 &tx_mask, &rx_mask);
2892 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2894 dai->tx_mask = tx_mask;
2895 dai->rx_mask = rx_mask;
2897 if (dai->driver->ops->set_tdm_slot)
2898 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2903 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2906 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2908 * @tx_num: how many TX channels
2909 * @tx_slot: pointer to an array which imply the TX slot number channel
2911 * @rx_num: how many RX channels
2912 * @rx_slot: pointer to an array which imply the RX slot number channel
2915 * configure the relationship between channel number and TDM slot number.
2917 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2918 unsigned int tx_num, unsigned int *tx_slot,
2919 unsigned int rx_num, unsigned int *rx_slot)
2921 if (dai->driver->ops->set_channel_map)
2922 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2927 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2930 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2932 * @tristate: tristate enable
2934 * Tristates the DAI so that others can use it.
2936 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2938 if (dai->driver->ops->set_tristate)
2939 return dai->driver->ops->set_tristate(dai, tristate);
2943 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2946 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2948 * @mute: mute enable
2949 * @direction: stream to mute
2951 * Mutes the DAI DAC.
2953 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2959 if (dai->driver->ops->mute_stream)
2960 return dai->driver->ops->mute_stream(dai, mute, direction);
2961 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2962 dai->driver->ops->digital_mute)
2963 return dai->driver->ops->digital_mute(dai, mute);
2967 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2970 * snd_soc_register_card - Register a card with the ASoC core
2972 * @card: Card to register
2975 int snd_soc_register_card(struct snd_soc_card *card)
2978 struct snd_soc_pcm_runtime *rtd;
2980 if (!card->name || !card->dev)
2983 for (i = 0; i < card->num_links; i++) {
2984 struct snd_soc_dai_link *link = &card->dai_link[i];
2986 ret = soc_init_dai_link(card, link);
2988 dev_err(card->dev, "ASoC: failed to init link %s\n",
2994 dev_set_drvdata(card->dev, card);
2996 snd_soc_initialize_card_lists(card);
2998 INIT_LIST_HEAD(&card->dai_link_list);
2999 card->num_dai_links = 0;
3001 INIT_LIST_HEAD(&card->rtd_list);
3004 INIT_LIST_HEAD(&card->dapm_dirty);
3005 INIT_LIST_HEAD(&card->dobj_list);
3006 card->instantiated = 0;
3007 mutex_init(&card->mutex);
3008 mutex_init(&card->dapm_mutex);
3010 ret = snd_soc_instantiate_card(card);
3014 /* deactivate pins to sleep state */
3015 list_for_each_entry(rtd, &card->rtd_list, list) {
3016 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3019 for (j = 0; j < rtd->num_codecs; j++) {
3020 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
3021 if (!codec_dai->active)
3022 pinctrl_pm_select_sleep_state(codec_dai->dev);
3025 if (!cpu_dai->active)
3026 pinctrl_pm_select_sleep_state(cpu_dai->dev);
3031 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3034 * snd_soc_unregister_card - Unregister a card with the ASoC core
3036 * @card: Card to unregister
3039 int snd_soc_unregister_card(struct snd_soc_card *card)
3041 if (card->instantiated) {
3042 card->instantiated = false;
3043 snd_soc_dapm_shutdown(card);
3044 soc_cleanup_card_resources(card);
3045 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
3050 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3053 * Simplify DAI link configuration by removing ".-1" from device names
3054 * and sanitizing names.
3056 static char *fmt_single_name(struct device *dev, int *id)
3058 char *found, name[NAME_SIZE];
3061 if (dev_name(dev) == NULL)
3064 strlcpy(name, dev_name(dev), NAME_SIZE);
3066 /* are we a "%s.%d" name (platform and SPI components) */
3067 found = strstr(name, dev->driver->name);
3070 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3072 /* discard ID from name if ID == -1 */
3074 found[strlen(dev->driver->name)] = '\0';
3078 /* I2C component devices are named "bus-addr" */
3079 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3080 char tmp[NAME_SIZE];
3082 /* create unique ID number from I2C addr and bus */
3083 *id = ((id1 & 0xffff) << 16) + id2;
3085 /* sanitize component name for DAI link creation */
3086 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3087 strlcpy(name, tmp, NAME_SIZE);
3092 return kstrdup(name, GFP_KERNEL);
3096 * Simplify DAI link naming for single devices with multiple DAIs by removing
3097 * any ".-1" and using the DAI name (instead of device name).
3099 static inline char *fmt_multiple_name(struct device *dev,
3100 struct snd_soc_dai_driver *dai_drv)
3102 if (dai_drv->name == NULL) {
3104 "ASoC: error - multiple DAI %s registered with no name\n",
3109 return kstrdup(dai_drv->name, GFP_KERNEL);
3113 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3115 * @component: The component for which the DAIs should be unregistered
3117 static void snd_soc_unregister_dais(struct snd_soc_component *component)
3119 struct snd_soc_dai *dai, *_dai;
3121 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
3122 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
3124 list_del(&dai->list);
3130 /* Create a DAI and add it to the component's DAI list */
3131 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
3132 struct snd_soc_dai_driver *dai_drv,
3133 bool legacy_dai_naming)
3135 struct device *dev = component->dev;
3136 struct snd_soc_dai *dai;
3138 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
3140 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3145 * Back in the old days when we still had component-less DAIs,
3146 * instead of having a static name, component-less DAIs would
3147 * inherit the name of the parent device so it is possible to
3148 * register multiple instances of the DAI. We still need to keep
3149 * the same naming style even though those DAIs are not
3150 * component-less anymore.
3152 if (legacy_dai_naming &&
3153 (dai_drv->id == 0 || dai_drv->name == NULL)) {
3154 dai->name = fmt_single_name(dev, &dai->id);
3156 dai->name = fmt_multiple_name(dev, dai_drv);
3158 dai->id = dai_drv->id;
3160 dai->id = component->num_dai;
3162 if (dai->name == NULL) {
3167 dai->component = component;
3169 dai->driver = dai_drv;
3170 if (!dai->driver->ops)
3171 dai->driver->ops = &null_dai_ops;
3173 list_add_tail(&dai->list, &component->dai_list);
3174 component->num_dai++;
3176 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3181 * snd_soc_register_dais - Register a DAI with the ASoC core
3183 * @component: The component the DAIs are registered for
3184 * @dai_drv: DAI driver to use for the DAIs
3185 * @count: Number of DAIs
3186 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3189 static int snd_soc_register_dais(struct snd_soc_component *component,
3190 struct snd_soc_dai_driver *dai_drv, size_t count,
3191 bool legacy_dai_naming)
3193 struct device *dev = component->dev;
3194 struct snd_soc_dai *dai;
3198 dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count);
3200 for (i = 0; i < count; i++) {
3202 dai = soc_add_dai(component, dai_drv + i,
3203 count == 1 && legacy_dai_naming);
3213 snd_soc_unregister_dais(component);
3219 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3221 * @component: The component the DAIs are registered for
3222 * @dai_drv: DAI driver to use for the DAI
3224 * Topology can use this API to register DAIs when probing a component.
3225 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3226 * will be freed in the component cleanup.
3228 int snd_soc_register_dai(struct snd_soc_component *component,
3229 struct snd_soc_dai_driver *dai_drv)
3231 struct snd_soc_dapm_context *dapm =
3232 snd_soc_component_get_dapm(component);
3233 struct snd_soc_dai *dai;
3236 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
3237 dev_err(component->dev, "Invalid dai type %d\n",
3238 dai_drv->dobj.type);
3242 lockdep_assert_held(&client_mutex);
3243 dai = soc_add_dai(component, dai_drv, false);
3247 /* Create the DAI widgets here. After adding DAIs, topology may
3248 * also add routes that need these widgets as source or sink.
3250 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
3252 dev_err(component->dev,
3253 "Failed to create DAI widgets %d\n", ret);
3258 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3260 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
3261 enum snd_soc_dapm_type type, int subseq)
3263 struct snd_soc_component *component = dapm->component;
3265 component->driver->seq_notifier(component, type, subseq);
3268 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
3271 struct snd_soc_component *component = dapm->component;
3273 return component->driver->stream_event(component, event);
3276 static int snd_soc_component_drv_pcm_new(struct snd_soc_component *component,
3277 struct snd_soc_pcm_runtime *rtd)
3279 if (component->driver->pcm_new)
3280 return component->driver->pcm_new(rtd);
3285 static void snd_soc_component_drv_pcm_free(struct snd_soc_component *component,
3286 struct snd_pcm *pcm)
3288 if (component->driver->pcm_free)
3289 component->driver->pcm_free(pcm);
3292 static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context *dapm,
3293 enum snd_soc_bias_level level)
3295 struct snd_soc_component *component = dapm->component;
3297 return component->driver->set_bias_level(component, level);
3300 static int snd_soc_component_initialize(struct snd_soc_component *component,
3301 const struct snd_soc_component_driver *driver, struct device *dev)
3303 struct snd_soc_dapm_context *dapm;
3305 component->name = fmt_single_name(dev, &component->id);
3306 if (!component->name) {
3307 dev_err(dev, "ASoC: Failed to allocate name\n");
3311 component->dev = dev;
3312 component->driver = driver;
3313 component->probe = component->driver->probe;
3314 component->remove = component->driver->remove;
3315 component->suspend = component->driver->suspend;
3316 component->resume = component->driver->resume;
3317 component->set_sysclk = component->driver->set_sysclk;
3318 component->set_pll = component->driver->set_pll;
3319 component->set_jack = component->driver->set_jack;
3320 component->pcm_new = snd_soc_component_drv_pcm_new;
3321 component->pcm_free = snd_soc_component_drv_pcm_free;
3323 dapm = snd_soc_component_get_dapm(component);
3325 dapm->component = component;
3326 dapm->bias_level = SND_SOC_BIAS_OFF;
3327 dapm->idle_bias_off = !driver->idle_bias_on;
3328 dapm->suspend_bias_off = driver->suspend_bias_off;
3329 if (driver->seq_notifier)
3330 dapm->seq_notifier = snd_soc_component_seq_notifier;
3331 if (driver->stream_event)
3332 dapm->stream_event = snd_soc_component_stream_event;
3333 if (driver->set_bias_level)
3334 dapm->set_bias_level = snd_soc_component_set_bias_level;
3336 INIT_LIST_HEAD(&component->dai_list);
3337 mutex_init(&component->io_mutex);
3342 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
3344 int val_bytes = regmap_get_val_bytes(component->regmap);
3346 /* Errors are legitimate for non-integer byte multiples */
3348 component->val_bytes = val_bytes;
3351 #ifdef CONFIG_REGMAP
3354 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3355 * @component: The component for which to initialize the regmap instance
3356 * @regmap: The regmap instance that should be used by the component
3358 * This function allows deferred assignment of the regmap instance that is
3359 * associated with the component. Only use this if the regmap instance is not
3360 * yet ready when the component is registered. The function must also be called
3361 * before the first IO attempt of the component.
3363 void snd_soc_component_init_regmap(struct snd_soc_component *component,
3364 struct regmap *regmap)
3366 component->regmap = regmap;
3367 snd_soc_component_setup_regmap(component);
3369 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
3372 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3373 * @component: The component for which to de-initialize the regmap instance
3375 * Calls regmap_exit() on the regmap instance associated to the component and
3376 * removes the regmap instance from the component.
3378 * This function should only be used if snd_soc_component_init_regmap() was used
3379 * to initialize the regmap instance.
3381 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
3383 regmap_exit(component->regmap);
3384 component->regmap = NULL;
3386 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3390 static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
3392 if (!component->write && !component->read) {
3393 if (!component->regmap)
3394 component->regmap = dev_get_regmap(component->dev, NULL);
3395 if (component->regmap)
3396 snd_soc_component_setup_regmap(component);
3399 list_add(&component->list, &component_list);
3400 INIT_LIST_HEAD(&component->dobj_list);
3403 static void snd_soc_component_add(struct snd_soc_component *component)
3405 mutex_lock(&client_mutex);
3406 snd_soc_component_add_unlocked(component);
3407 mutex_unlock(&client_mutex);
3410 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3412 snd_soc_unregister_dais(component);
3413 kfree(component->name);
3416 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3418 struct snd_soc_card *card = component->card;
3421 snd_soc_unregister_card(card);
3423 list_del(&component->list);
3426 #define ENDIANNESS_MAP(name) \
3427 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
3428 static u64 endianness_format_map[] = {
3429 ENDIANNESS_MAP(S16_),
3430 ENDIANNESS_MAP(U16_),
3431 ENDIANNESS_MAP(S24_),
3432 ENDIANNESS_MAP(U24_),
3433 ENDIANNESS_MAP(S32_),
3434 ENDIANNESS_MAP(U32_),
3435 ENDIANNESS_MAP(S24_3),
3436 ENDIANNESS_MAP(U24_3),
3437 ENDIANNESS_MAP(S20_3),
3438 ENDIANNESS_MAP(U20_3),
3439 ENDIANNESS_MAP(S18_3),
3440 ENDIANNESS_MAP(U18_3),
3441 ENDIANNESS_MAP(FLOAT_),
3442 ENDIANNESS_MAP(FLOAT64_),
3443 ENDIANNESS_MAP(IEC958_SUBFRAME_),
3447 * Fix up the DAI formats for endianness: codecs don't actually see
3448 * the endianness of the data but we're using the CPU format
3449 * definitions which do need to include endianness so we ensure that
3450 * codec DAIs always have both big and little endian variants set.
3452 static void convert_endianness_formats(struct snd_soc_pcm_stream *stream)
3456 for (i = 0; i < ARRAY_SIZE(endianness_format_map); i++)
3457 if (stream->formats & endianness_format_map[i])
3458 stream->formats |= endianness_format_map[i];
3461 int snd_soc_add_component(struct device *dev,
3462 struct snd_soc_component *component,
3463 const struct snd_soc_component_driver *component_driver,
3464 struct snd_soc_dai_driver *dai_drv,
3470 ret = snd_soc_component_initialize(component, component_driver, dev);
3474 component->ignore_pmdown_time = true;
3475 component->registered_as_component = true;
3477 if (component_driver->endianness) {
3478 for (i = 0; i < num_dai; i++) {
3479 convert_endianness_formats(&dai_drv[i].playback);
3480 convert_endianness_formats(&dai_drv[i].capture);
3484 ret = snd_soc_register_dais(component, dai_drv, num_dai,
3485 !component_driver->non_legacy_dai_naming);
3487 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3491 snd_soc_component_add(component);
3496 snd_soc_component_cleanup(component);
3501 EXPORT_SYMBOL_GPL(snd_soc_add_component);
3503 int snd_soc_register_component(struct device *dev,
3504 const struct snd_soc_component_driver *component_driver,
3505 struct snd_soc_dai_driver *dai_drv,
3508 struct snd_soc_component *component;
3510 component = kzalloc(sizeof(*component), GFP_KERNEL);
3514 return snd_soc_add_component(dev, component, component_driver,
3517 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3520 * snd_soc_unregister_component - Unregister all related component
3521 * from the ASoC core
3523 * @dev: The device to unregister
3525 static int __snd_soc_unregister_component(struct device *dev)
3527 struct snd_soc_component *component;
3530 mutex_lock(&client_mutex);
3531 list_for_each_entry(component, &component_list, list) {
3532 if (dev != component->dev ||
3533 !component->registered_as_component)
3536 snd_soc_tplg_component_remove(component, SND_SOC_TPLG_INDEX_ALL);
3537 snd_soc_component_del_unlocked(component);
3541 mutex_unlock(&client_mutex);
3544 snd_soc_component_cleanup(component);
3551 void snd_soc_unregister_component(struct device *dev)
3553 while (__snd_soc_unregister_component(dev));
3555 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3557 struct snd_soc_component *snd_soc_lookup_component(struct device *dev,
3558 const char *driver_name)
3560 struct snd_soc_component *component;
3561 struct snd_soc_component *ret;
3564 mutex_lock(&client_mutex);
3565 list_for_each_entry(component, &component_list, list) {
3566 if (dev != component->dev)
3570 (driver_name != component->driver->name) &&
3571 (strcmp(component->driver->name, driver_name) != 0))
3577 mutex_unlock(&client_mutex);
3581 EXPORT_SYMBOL_GPL(snd_soc_lookup_component);
3583 static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
3585 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3587 return platform->driver->probe(platform);
3590 static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
3592 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3594 platform->driver->remove(platform);
3597 static int snd_soc_platform_drv_pcm_new(struct snd_soc_component *component,
3598 struct snd_soc_pcm_runtime *rtd)
3600 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3602 if (platform->driver->pcm_new)
3603 return platform->driver->pcm_new(rtd);
3608 static void snd_soc_platform_drv_pcm_free(struct snd_soc_component *component,
3609 struct snd_pcm *pcm)
3611 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3613 if (platform->driver->pcm_free)
3614 platform->driver->pcm_free(pcm);
3618 * snd_soc_add_platform - Add a platform to the ASoC core
3619 * @dev: The parent device for the platform
3620 * @platform: The platform to add
3621 * @platform_drv: The driver for the platform
3623 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
3624 const struct snd_soc_platform_driver *platform_drv)
3628 ret = snd_soc_component_initialize(&platform->component,
3629 &platform_drv->component_driver, dev);
3633 platform->dev = dev;
3634 platform->driver = platform_drv;
3636 if (platform_drv->probe)
3637 platform->component.probe = snd_soc_platform_drv_probe;
3638 if (platform_drv->remove)
3639 platform->component.remove = snd_soc_platform_drv_remove;
3640 if (platform_drv->pcm_new)
3641 platform->component.pcm_new = snd_soc_platform_drv_pcm_new;
3642 if (platform_drv->pcm_free)
3643 platform->component.pcm_free = snd_soc_platform_drv_pcm_free;
3645 #ifdef CONFIG_DEBUG_FS
3646 platform->component.debugfs_prefix = "platform";
3649 mutex_lock(&client_mutex);
3650 snd_soc_component_add_unlocked(&platform->component);
3651 list_add(&platform->list, &platform_list);
3652 mutex_unlock(&client_mutex);
3654 dev_dbg(dev, "ASoC: Registered platform '%s'\n",
3655 platform->component.name);
3659 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
3662 * snd_soc_register_platform - Register a platform with the ASoC core
3664 * @dev: The device for the platform
3665 * @platform_drv: The driver for the platform
3667 int snd_soc_register_platform(struct device *dev,
3668 const struct snd_soc_platform_driver *platform_drv)
3670 struct snd_soc_platform *platform;
3673 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3675 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3676 if (platform == NULL)
3679 ret = snd_soc_add_platform(dev, platform, platform_drv);
3685 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3688 * snd_soc_remove_platform - Remove a platform from the ASoC core
3689 * @platform: the platform to remove
3691 void snd_soc_remove_platform(struct snd_soc_platform *platform)
3694 mutex_lock(&client_mutex);
3695 list_del(&platform->list);
3696 snd_soc_component_del_unlocked(&platform->component);
3697 mutex_unlock(&client_mutex);
3699 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
3700 platform->component.name);
3702 snd_soc_component_cleanup(&platform->component);
3704 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
3706 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
3708 struct snd_soc_platform *platform;
3710 mutex_lock(&client_mutex);
3711 list_for_each_entry(platform, &platform_list, list) {
3712 if (dev == platform->dev) {
3713 mutex_unlock(&client_mutex);
3717 mutex_unlock(&client_mutex);
3721 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
3724 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3726 * @dev: platform to unregister
3728 void snd_soc_unregister_platform(struct device *dev)
3730 struct snd_soc_platform *platform;
3732 platform = snd_soc_lookup_platform(dev);
3736 snd_soc_remove_platform(platform);
3739 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3741 static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
3743 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3745 return codec->driver->probe(codec);
3748 static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
3750 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3752 codec->driver->remove(codec);
3755 static int snd_soc_codec_drv_suspend(struct snd_soc_component *component)
3757 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3759 return codec->driver->suspend(codec);
3762 static int snd_soc_codec_drv_resume(struct snd_soc_component *component)
3764 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3766 return codec->driver->resume(codec);
3769 static int snd_soc_codec_drv_write(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 return codec->driver->write(codec, reg, val);
3777 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
3778 unsigned int reg, unsigned int *val)
3780 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3782 *val = codec->driver->read(codec, reg);
3787 static int snd_soc_codec_set_sysclk_(struct snd_soc_component *component,
3788 int clk_id, int source, unsigned int freq, int dir)
3790 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3792 return snd_soc_codec_set_sysclk(codec, clk_id, source, freq, dir);
3795 static int snd_soc_codec_set_pll_(struct snd_soc_component *component,
3796 int pll_id, int source, unsigned int freq_in,
3797 unsigned int freq_out)
3799 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3801 return snd_soc_codec_set_pll(codec, pll_id, source, freq_in, freq_out);
3804 static int snd_soc_codec_set_jack_(struct snd_soc_component *component,
3805 struct snd_soc_jack *jack, void *data)
3807 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3809 return snd_soc_codec_set_jack(codec, jack, data);
3812 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
3813 enum snd_soc_bias_level level)
3815 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
3817 return codec->driver->set_bias_level(codec, level);
3821 * snd_soc_register_codec - Register a codec with the ASoC core
3823 * @dev: The parent device for this codec
3824 * @codec_drv: Codec driver
3825 * @dai_drv: The associated DAI driver
3826 * @num_dai: Number of DAIs
3828 int snd_soc_register_codec(struct device *dev,
3829 const struct snd_soc_codec_driver *codec_drv,
3830 struct snd_soc_dai_driver *dai_drv,
3833 struct snd_soc_dapm_context *dapm;
3834 struct snd_soc_codec *codec;
3835 struct snd_soc_dai *dai;
3838 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3840 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3844 codec->component.codec = codec;
3846 ret = snd_soc_component_initialize(&codec->component,
3847 &codec_drv->component_driver, dev);
3851 if (codec_drv->probe)
3852 codec->component.probe = snd_soc_codec_drv_probe;
3853 if (codec_drv->remove)
3854 codec->component.remove = snd_soc_codec_drv_remove;
3855 if (codec_drv->suspend)
3856 codec->component.suspend = snd_soc_codec_drv_suspend;
3857 if (codec_drv->resume)
3858 codec->component.resume = snd_soc_codec_drv_resume;
3859 if (codec_drv->write)
3860 codec->component.write = snd_soc_codec_drv_write;
3861 if (codec_drv->read)
3862 codec->component.read = snd_soc_codec_drv_read;
3863 if (codec_drv->set_sysclk)
3864 codec->component.set_sysclk = snd_soc_codec_set_sysclk_;
3865 if (codec_drv->set_pll)
3866 codec->component.set_pll = snd_soc_codec_set_pll_;
3867 if (codec_drv->set_jack)
3868 codec->component.set_jack = snd_soc_codec_set_jack_;
3869 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3871 dapm = snd_soc_codec_get_dapm(codec);
3872 dapm->idle_bias_off = codec_drv->idle_bias_off;
3873 dapm->suspend_bias_off = codec_drv->suspend_bias_off;
3874 if (codec_drv->seq_notifier)
3875 dapm->seq_notifier = codec_drv->seq_notifier;
3876 if (codec_drv->set_bias_level)
3877 dapm->set_bias_level = snd_soc_codec_set_bias_level;
3879 codec->driver = codec_drv;
3880 codec->component.val_bytes = codec_drv->reg_word_size;
3882 #ifdef CONFIG_DEBUG_FS
3883 codec->component.init_debugfs = soc_init_codec_debugfs;
3884 codec->component.debugfs_prefix = "codec";
3887 if (codec_drv->get_regmap)
3888 codec->component.regmap = codec_drv->get_regmap(dev);
3890 for (i = 0; i < num_dai; i++) {
3891 convert_endianness_formats(&dai_drv[i].playback);
3892 convert_endianness_formats(&dai_drv[i].capture);
3895 ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
3897 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3901 list_for_each_entry(dai, &codec->component.dai_list, list)
3904 mutex_lock(&client_mutex);
3905 snd_soc_component_add_unlocked(&codec->component);
3906 list_add(&codec->list, &codec_list);
3907 mutex_unlock(&client_mutex);
3909 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
3910 codec->component.name);
3914 snd_soc_component_cleanup(&codec->component);
3919 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3922 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3924 * @dev: codec to unregister
3926 void snd_soc_unregister_codec(struct device *dev)
3928 struct snd_soc_codec *codec;
3930 mutex_lock(&client_mutex);
3931 list_for_each_entry(codec, &codec_list, list) {
3932 if (dev == codec->dev)
3935 mutex_unlock(&client_mutex);
3939 list_del(&codec->list);
3940 snd_soc_component_del_unlocked(&codec->component);
3941 mutex_unlock(&client_mutex);
3943 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
3944 codec->component.name);
3946 snd_soc_component_cleanup(&codec->component);
3947 snd_soc_cache_exit(codec);
3950 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3952 /* Retrieve a card's name from device tree */
3953 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3954 const char *propname)
3956 struct device_node *np;
3960 pr_err("card->dev is not set before calling %s\n", __func__);
3964 np = card->dev->of_node;
3966 ret = of_property_read_string_index(np, propname, 0, &card->name);
3968 * EINVAL means the property does not exist. This is fine providing
3969 * card->name was previously set, which is checked later in
3970 * snd_soc_register_card.
3972 if (ret < 0 && ret != -EINVAL) {
3974 "ASoC: Property '%s' could not be read: %d\n",
3981 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3983 static const struct snd_soc_dapm_widget simple_widgets[] = {
3984 SND_SOC_DAPM_MIC("Microphone", NULL),
3985 SND_SOC_DAPM_LINE("Line", NULL),
3986 SND_SOC_DAPM_HP("Headphone", NULL),
3987 SND_SOC_DAPM_SPK("Speaker", NULL),
3990 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3991 const char *propname)
3993 struct device_node *np = card->dev->of_node;
3994 struct snd_soc_dapm_widget *widgets;
3995 const char *template, *wname;
3996 int i, j, num_widgets, ret;
3998 num_widgets = of_property_count_strings(np, propname);
3999 if (num_widgets < 0) {
4001 "ASoC: Property '%s' does not exist\n", propname);
4004 if (num_widgets & 1) {
4006 "ASoC: Property '%s' length is not even\n", propname);
4012 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4017 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
4021 "ASoC: Could not allocate memory for widgets\n");
4025 for (i = 0; i < num_widgets; i++) {
4026 ret = of_property_read_string_index(np, propname,
4030 "ASoC: Property '%s' index %d read error:%d\n",
4031 propname, 2 * i, ret);
4035 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
4036 if (!strncmp(template, simple_widgets[j].name,
4037 strlen(simple_widgets[j].name))) {
4038 widgets[i] = simple_widgets[j];
4043 if (j >= ARRAY_SIZE(simple_widgets)) {
4045 "ASoC: DAPM widget '%s' is not supported\n",
4050 ret = of_property_read_string_index(np, propname,
4055 "ASoC: Property '%s' index %d read error:%d\n",
4056 propname, (2 * i) + 1, ret);
4060 widgets[i].name = wname;
4063 card->of_dapm_widgets = widgets;
4064 card->num_of_dapm_widgets = num_widgets;
4068 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
4070 static int snd_soc_of_get_slot_mask(struct device_node *np,
4071 const char *prop_name,
4075 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
4081 for (i = 0; i < val; i++)
4082 if (be32_to_cpup(&of_slot_mask[i]))
4088 int snd_soc_of_parse_tdm_slot(struct device_node *np,
4089 unsigned int *tx_mask,
4090 unsigned int *rx_mask,
4091 unsigned int *slots,
4092 unsigned int *slot_width)
4098 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
4100 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
4102 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
4103 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
4111 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
4112 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
4122 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
4124 void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card,
4125 struct snd_soc_codec_conf *codec_conf,
4126 struct device_node *of_node,
4127 const char *propname)
4129 struct device_node *np = card->dev->of_node;
4133 ret = of_property_read_string(np, propname, &str);
4135 /* no prefix is not error */
4139 codec_conf->of_node = of_node;
4140 codec_conf->name_prefix = str;
4142 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix);
4144 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4145 const char *propname)
4147 struct device_node *np = card->dev->of_node;
4149 struct snd_soc_dapm_route *routes;
4152 num_routes = of_property_count_strings(np, propname);
4153 if (num_routes < 0 || num_routes & 1) {
4155 "ASoC: Property '%s' does not exist or its length is not even\n",
4161 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
4166 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4170 "ASoC: Could not allocate DAPM route table\n");
4174 for (i = 0; i < num_routes; i++) {
4175 ret = of_property_read_string_index(np, propname,
4176 2 * i, &routes[i].sink);
4179 "ASoC: Property '%s' index %d could not be read: %d\n",
4180 propname, 2 * i, ret);
4183 ret = of_property_read_string_index(np, propname,
4184 (2 * i) + 1, &routes[i].source);
4187 "ASoC: Property '%s' index %d could not be read: %d\n",
4188 propname, (2 * i) + 1, ret);
4193 card->num_of_dapm_routes = num_routes;
4194 card->of_dapm_routes = routes;
4198 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4200 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
4202 struct device_node **bitclkmaster,
4203 struct device_node **framemaster)
4207 unsigned int format = 0;
4213 } of_fmt_table[] = {
4214 { "i2s", SND_SOC_DAIFMT_I2S },
4215 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
4216 { "left_j", SND_SOC_DAIFMT_LEFT_J },
4217 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
4218 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
4219 { "ac97", SND_SOC_DAIFMT_AC97 },
4220 { "pdm", SND_SOC_DAIFMT_PDM},
4221 { "msb", SND_SOC_DAIFMT_MSB },
4222 { "lsb", SND_SOC_DAIFMT_LSB },
4229 * check "dai-format = xxx"
4230 * or "[prefix]format = xxx"
4231 * SND_SOC_DAIFMT_FORMAT_MASK area
4233 ret = of_property_read_string(np, "dai-format", &str);
4235 snprintf(prop, sizeof(prop), "%sformat", prefix);
4236 ret = of_property_read_string(np, prop, &str);
4239 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
4240 if (strcmp(str, of_fmt_table[i].name) == 0) {
4241 format |= of_fmt_table[i].val;
4248 * check "[prefix]continuous-clock"
4249 * SND_SOC_DAIFMT_CLOCK_MASK area
4251 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
4252 if (of_property_read_bool(np, prop))
4253 format |= SND_SOC_DAIFMT_CONT;
4255 format |= SND_SOC_DAIFMT_GATED;
4258 * check "[prefix]bitclock-inversion"
4259 * check "[prefix]frame-inversion"
4260 * SND_SOC_DAIFMT_INV_MASK area
4262 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
4263 bit = !!of_get_property(np, prop, NULL);
4265 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
4266 frame = !!of_get_property(np, prop, NULL);
4268 switch ((bit << 4) + frame) {
4270 format |= SND_SOC_DAIFMT_IB_IF;
4273 format |= SND_SOC_DAIFMT_IB_NF;
4276 format |= SND_SOC_DAIFMT_NB_IF;
4279 /* SND_SOC_DAIFMT_NB_NF is default */
4284 * check "[prefix]bitclock-master"
4285 * check "[prefix]frame-master"
4286 * SND_SOC_DAIFMT_MASTER_MASK area
4288 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4289 bit = !!of_get_property(np, prop, NULL);
4290 if (bit && bitclkmaster)
4291 *bitclkmaster = of_parse_phandle(np, prop, 0);
4293 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4294 frame = !!of_get_property(np, prop, NULL);
4295 if (frame && framemaster)
4296 *framemaster = of_parse_phandle(np, prop, 0);
4298 switch ((bit << 4) + frame) {
4300 format |= SND_SOC_DAIFMT_CBM_CFM;
4303 format |= SND_SOC_DAIFMT_CBM_CFS;
4306 format |= SND_SOC_DAIFMT_CBS_CFM;
4309 format |= SND_SOC_DAIFMT_CBS_CFS;
4315 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4317 int snd_soc_get_dai_id(struct device_node *ep)
4319 struct snd_soc_component *pos;
4320 struct device_node *node;
4323 node = of_graph_get_port_parent(ep);
4326 * For example HDMI case, HDMI has video/sound port,
4327 * but ALSA SoC needs sound port number only.
4328 * Thus counting HDMI DT port/endpoint doesn't work.
4329 * Then, it should have .of_xlate_dai_id
4332 mutex_lock(&client_mutex);
4333 list_for_each_entry(pos, &component_list, list) {
4334 struct device_node *component_of_node = pos->dev->of_node;
4336 if (!component_of_node && pos->dev->parent)
4337 component_of_node = pos->dev->parent->of_node;
4339 if (component_of_node != node)
4342 if (pos->driver->of_xlate_dai_id)
4343 ret = pos->driver->of_xlate_dai_id(pos, ep);
4347 mutex_unlock(&client_mutex);
4353 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id);
4355 int snd_soc_get_dai_name(struct of_phandle_args *args,
4356 const char **dai_name)
4358 struct snd_soc_component *pos;
4359 struct device_node *component_of_node;
4360 int ret = -EPROBE_DEFER;
4362 mutex_lock(&client_mutex);
4363 list_for_each_entry(pos, &component_list, list) {
4364 component_of_node = pos->dev->of_node;
4365 if (!component_of_node && pos->dev->parent)
4366 component_of_node = pos->dev->parent->of_node;
4368 if (component_of_node != args->np)
4371 if (pos->driver->of_xlate_dai_name) {
4372 ret = pos->driver->of_xlate_dai_name(pos,
4376 struct snd_soc_dai *dai;
4379 switch (args->args_count) {
4381 id = 0; /* same as dai_drv[0] */
4391 if (id < 0 || id >= pos->num_dai) {
4398 /* find target DAI */
4399 list_for_each_entry(dai, &pos->dai_list, list) {
4405 *dai_name = dai->driver->name;
4407 *dai_name = pos->name;
4412 mutex_unlock(&client_mutex);
4415 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
4417 int snd_soc_of_get_dai_name(struct device_node *of_node,
4418 const char **dai_name)
4420 struct of_phandle_args args;
4423 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4424 "#sound-dai-cells", 0, &args);
4428 ret = snd_soc_get_dai_name(&args, dai_name);
4430 of_node_put(args.np);
4434 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4437 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4439 * @of_node: Device node
4440 * @dai_link: DAI link
4442 * Builds an array of CODEC DAI components from the DAI link property
4444 * The array is set in the DAI link and the number of DAIs is set accordingly.
4445 * The device nodes in the array (of_node) must be dereferenced by the caller.
4447 * Returns 0 for success
4449 int snd_soc_of_get_dai_link_codecs(struct device *dev,
4450 struct device_node *of_node,
4451 struct snd_soc_dai_link *dai_link)
4453 struct of_phandle_args args;
4454 struct snd_soc_dai_link_component *component;
4456 int index, num_codecs, ret;
4458 /* Count the number of CODECs */
4460 num_codecs = of_count_phandle_with_args(of_node, name,
4461 "#sound-dai-cells");
4462 if (num_codecs <= 0) {
4463 if (num_codecs == -ENOENT)
4464 dev_err(dev, "No 'sound-dai' property\n");
4466 dev_err(dev, "Bad phandle in 'sound-dai'\n");
4469 component = devm_kzalloc(dev,
4470 sizeof *component * num_codecs,
4474 dai_link->codecs = component;
4475 dai_link->num_codecs = num_codecs;
4477 /* Parse the list */
4478 for (index = 0, component = dai_link->codecs;
4479 index < dai_link->num_codecs;
4480 index++, component++) {
4481 ret = of_parse_phandle_with_args(of_node, name,
4486 component->of_node = args.np;
4487 ret = snd_soc_get_dai_name(&args, &component->dai_name);
4493 for (index = 0, component = dai_link->codecs;
4494 index < dai_link->num_codecs;
4495 index++, component++) {
4496 if (!component->of_node)
4498 of_node_put(component->of_node);
4499 component->of_node = NULL;
4501 dai_link->codecs = NULL;
4502 dai_link->num_codecs = 0;
4505 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
4507 static int __init snd_soc_init(void)
4509 snd_soc_debugfs_init();
4510 snd_soc_util_init();
4512 return platform_driver_register(&soc_driver);
4514 module_init(snd_soc_init);
4516 static void __exit snd_soc_exit(void)
4518 snd_soc_util_exit();
4519 snd_soc_debugfs_exit();
4521 platform_driver_unregister(&soc_driver);
4523 module_exit(snd_soc_exit);
4525 /* Module information */
4526 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4527 MODULE_DESCRIPTION("ALSA SoC Core");
4528 MODULE_LICENSE("GPL");
4529 MODULE_ALIAS("platform:soc-audio");