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/dmi.h>
38 #include <sound/core.h>
39 #include <sound/jack.h>
40 #include <sound/pcm.h>
41 #include <sound/pcm_params.h>
42 #include <sound/soc.h>
43 #include <sound/soc-dpcm.h>
44 #include <sound/soc-topology.h>
45 #include <sound/initval.h>
47 #define CREATE_TRACE_POINTS
48 #include <trace/events/asoc.h>
52 #ifdef CONFIG_DEBUG_FS
53 struct dentry *snd_soc_debugfs_root;
54 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
57 static DEFINE_MUTEX(client_mutex);
58 static LIST_HEAD(platform_list);
59 static LIST_HEAD(codec_list);
60 static LIST_HEAD(component_list);
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
67 static int pmdown_time = 5000;
68 module_param(pmdown_time, int, 0);
69 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
71 /* returns the minimum number of bytes needed to represent
72 * a particular given value */
73 static int min_bytes_needed(unsigned long val)
78 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
81 c = (sizeof val * 8) - c;
89 /* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91 static int format_register_str(struct snd_soc_codec *codec,
92 unsigned int reg, char *buf, size_t len)
94 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
95 int regsize = codec->driver->reg_word_size * 2;
98 /* +2 for ': ' and + 1 for '\n' */
99 if (wordsize + regsize + 2 + 1 != len)
102 sprintf(buf, "%.*x: ", wordsize, reg);
105 ret = snd_soc_read(codec, reg);
107 memset(buf, 'X', regsize);
109 sprintf(buf, "%.*x", regsize, ret);
111 /* no NUL-termination needed */
115 /* codec register dump */
116 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
117 size_t count, loff_t pos)
120 int wordsize, regsize;
125 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
126 regsize = codec->driver->reg_word_size * 2;
128 len = wordsize + regsize + 2 + 1;
130 if (!codec->driver->reg_cache_size)
133 if (codec->driver->reg_cache_step)
134 step = codec->driver->reg_cache_step;
136 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
137 /* only support larger than PAGE_SIZE bytes debugfs
138 * entries for the default case */
140 if (total + len >= count - 1)
142 format_register_str(codec, i, buf + total, len);
148 total = min(total, count - 1);
153 static ssize_t codec_reg_show(struct device *dev,
154 struct device_attribute *attr, char *buf)
156 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
158 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
161 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
163 static ssize_t pmdown_time_show(struct device *dev,
164 struct device_attribute *attr, char *buf)
166 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
168 return sprintf(buf, "%ld\n", rtd->pmdown_time);
171 static ssize_t pmdown_time_set(struct device *dev,
172 struct device_attribute *attr,
173 const char *buf, size_t count)
175 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
178 ret = kstrtol(buf, 10, &rtd->pmdown_time);
185 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
187 static struct attribute *soc_dev_attrs[] = {
188 &dev_attr_codec_reg.attr,
189 &dev_attr_pmdown_time.attr,
193 static umode_t soc_dev_attr_is_visible(struct kobject *kobj,
194 struct attribute *attr, int idx)
196 struct device *dev = kobj_to_dev(kobj);
197 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
199 if (attr == &dev_attr_pmdown_time.attr)
200 return attr->mode; /* always visible */
201 return rtd->codec ? attr->mode : 0; /* enabled only with codec */
204 static const struct attribute_group soc_dapm_dev_group = {
205 .attrs = soc_dapm_dev_attrs,
206 .is_visible = soc_dev_attr_is_visible,
209 static const struct attribute_group soc_dev_roup = {
210 .attrs = soc_dev_attrs,
211 .is_visible = soc_dev_attr_is_visible,
214 static const struct attribute_group *soc_dev_attr_groups[] = {
220 #ifdef CONFIG_DEBUG_FS
221 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
222 size_t count, loff_t *ppos)
225 struct snd_soc_codec *codec = file->private_data;
228 if (*ppos < 0 || !count)
231 buf = kmalloc(count, GFP_KERNEL);
235 ret = soc_codec_reg_show(codec, buf, count, *ppos);
237 if (copy_to_user(user_buf, buf, ret)) {
248 static ssize_t codec_reg_write_file(struct file *file,
249 const char __user *user_buf, size_t count, loff_t *ppos)
254 unsigned long reg, value;
255 struct snd_soc_codec *codec = file->private_data;
258 buf_size = min(count, (sizeof(buf)-1));
259 if (copy_from_user(buf, user_buf, buf_size))
263 while (*start == ' ')
265 reg = simple_strtoul(start, &start, 16);
266 while (*start == ' ')
268 ret = kstrtoul(start, 16, &value);
272 /* Userspace has been fiddling around behind the kernel's back */
273 add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE);
275 snd_soc_write(codec, reg, value);
279 static const struct file_operations codec_reg_fops = {
281 .read = codec_reg_read_file,
282 .write = codec_reg_write_file,
283 .llseek = default_llseek,
286 static void soc_init_component_debugfs(struct snd_soc_component *component)
288 if (!component->card->debugfs_card_root)
291 if (component->debugfs_prefix) {
294 name = kasprintf(GFP_KERNEL, "%s:%s",
295 component->debugfs_prefix, component->name);
297 component->debugfs_root = debugfs_create_dir(name,
298 component->card->debugfs_card_root);
302 component->debugfs_root = debugfs_create_dir(component->name,
303 component->card->debugfs_card_root);
306 if (!component->debugfs_root) {
307 dev_warn(component->dev,
308 "ASoC: Failed to create component debugfs directory\n");
312 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component),
313 component->debugfs_root);
315 if (component->init_debugfs)
316 component->init_debugfs(component);
319 static void soc_cleanup_component_debugfs(struct snd_soc_component *component)
321 debugfs_remove_recursive(component->debugfs_root);
324 static void soc_init_codec_debugfs(struct snd_soc_component *component)
326 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
328 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
329 codec->component.debugfs_root,
330 codec, &codec_reg_fops);
331 if (!codec->debugfs_reg)
333 "ASoC: Failed to create codec register debugfs file\n");
336 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
337 size_t count, loff_t *ppos)
339 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
340 ssize_t len, ret = 0;
341 struct snd_soc_codec *codec;
346 mutex_lock(&client_mutex);
348 list_for_each_entry(codec, &codec_list, list) {
349 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
350 codec->component.name);
353 if (ret > PAGE_SIZE) {
359 mutex_unlock(&client_mutex);
362 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
369 static const struct file_operations codec_list_fops = {
370 .read = codec_list_read_file,
371 .llseek = default_llseek,/* read accesses f_pos */
374 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
375 size_t count, loff_t *ppos)
377 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
378 ssize_t len, ret = 0;
379 struct snd_soc_component *component;
380 struct snd_soc_dai *dai;
385 mutex_lock(&client_mutex);
387 list_for_each_entry(component, &component_list, list) {
388 list_for_each_entry(dai, &component->dai_list, list) {
389 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
393 if (ret > PAGE_SIZE) {
400 mutex_unlock(&client_mutex);
402 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
409 static const struct file_operations dai_list_fops = {
410 .read = dai_list_read_file,
411 .llseek = default_llseek,/* read accesses f_pos */
414 static ssize_t platform_list_read_file(struct file *file,
415 char __user *user_buf,
416 size_t count, loff_t *ppos)
418 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
419 ssize_t len, ret = 0;
420 struct snd_soc_platform *platform;
425 mutex_lock(&client_mutex);
427 list_for_each_entry(platform, &platform_list, list) {
428 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
429 platform->component.name);
432 if (ret > PAGE_SIZE) {
438 mutex_unlock(&client_mutex);
440 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
447 static const struct file_operations platform_list_fops = {
448 .read = platform_list_read_file,
449 .llseek = default_llseek,/* read accesses f_pos */
452 static void soc_init_card_debugfs(struct snd_soc_card *card)
454 if (!snd_soc_debugfs_root)
457 card->debugfs_card_root = debugfs_create_dir(card->name,
458 snd_soc_debugfs_root);
459 if (!card->debugfs_card_root) {
461 "ASoC: Failed to create card debugfs directory\n");
465 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
466 card->debugfs_card_root,
468 if (!card->debugfs_pop_time)
470 "ASoC: Failed to create pop time debugfs file\n");
473 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
475 debugfs_remove_recursive(card->debugfs_card_root);
479 static void snd_soc_debugfs_init(void)
481 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
482 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
483 pr_warn("ASoC: Failed to create debugfs directory\n");
484 snd_soc_debugfs_root = NULL;
488 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
490 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
492 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
494 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
496 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
497 &platform_list_fops))
498 pr_warn("ASoC: Failed to create platform list debugfs file\n");
501 static void snd_soc_debugfs_exit(void)
503 debugfs_remove_recursive(snd_soc_debugfs_root);
508 #define soc_init_codec_debugfs NULL
510 static inline void soc_init_component_debugfs(
511 struct snd_soc_component *component)
515 static inline void soc_cleanup_component_debugfs(
516 struct snd_soc_component *component)
520 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
524 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
528 static inline void snd_soc_debugfs_init(void)
532 static inline void snd_soc_debugfs_exit(void)
538 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
539 const char *dai_link, int stream)
541 struct snd_soc_pcm_runtime *rtd;
543 list_for_each_entry(rtd, &card->rtd_list, list) {
544 if (rtd->dai_link->no_pcm &&
545 !strcmp(rtd->dai_link->name, dai_link))
546 return rtd->pcm->streams[stream].substream;
548 dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link);
551 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
553 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
554 struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
556 struct snd_soc_pcm_runtime *rtd;
558 rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
563 rtd->dai_link = dai_link;
564 rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) *
565 dai_link->num_codecs,
567 if (!rtd->codec_dais) {
575 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
577 if (rtd && rtd->codec_dais)
578 kfree(rtd->codec_dais);
582 static void soc_add_pcm_runtime(struct snd_soc_card *card,
583 struct snd_soc_pcm_runtime *rtd)
585 list_add_tail(&rtd->list, &card->rtd_list);
586 rtd->num = card->num_rtd;
590 static void soc_remove_pcm_runtimes(struct snd_soc_card *card)
592 struct snd_soc_pcm_runtime *rtd, *_rtd;
594 list_for_each_entry_safe(rtd, _rtd, &card->rtd_list, list) {
595 list_del(&rtd->list);
596 soc_free_pcm_runtime(rtd);
602 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
603 const char *dai_link)
605 struct snd_soc_pcm_runtime *rtd;
607 list_for_each_entry(rtd, &card->rtd_list, list) {
608 if (!strcmp(rtd->dai_link->name, dai_link))
611 dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link);
614 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
616 static void codec2codec_close_delayed_work(struct work_struct *work)
618 /* Currently nothing to do for c2c links
619 * Since c2c links are internal nodes in the DAPM graph and
620 * don't interface with the outside world or application layer
621 * we don't have to do any special handling on close.
625 #ifdef CONFIG_PM_SLEEP
626 /* powers down audio subsystem for suspend */
627 int snd_soc_suspend(struct device *dev)
629 struct snd_soc_card *card = dev_get_drvdata(dev);
630 struct snd_soc_component *component;
631 struct snd_soc_pcm_runtime *rtd;
634 /* If the card is not initialized yet there is nothing to do */
635 if (!card->instantiated)
638 /* Due to the resume being scheduled into a workqueue we could
639 * suspend before that's finished - wait for it to complete.
641 snd_power_lock(card->snd_card);
642 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
643 snd_power_unlock(card->snd_card);
645 /* we're going to block userspace touching us until resume completes */
646 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
648 /* mute any active DACs */
649 list_for_each_entry(rtd, &card->rtd_list, list) {
651 if (rtd->dai_link->ignore_suspend)
654 for (i = 0; i < rtd->num_codecs; i++) {
655 struct snd_soc_dai *dai = rtd->codec_dais[i];
656 struct snd_soc_dai_driver *drv = dai->driver;
658 if (drv->ops->digital_mute && dai->playback_active)
659 drv->ops->digital_mute(dai, 1);
663 /* suspend all pcms */
664 list_for_each_entry(rtd, &card->rtd_list, list) {
665 if (rtd->dai_link->ignore_suspend)
668 snd_pcm_suspend_all(rtd->pcm);
671 if (card->suspend_pre)
672 card->suspend_pre(card);
674 list_for_each_entry(rtd, &card->rtd_list, list) {
675 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
677 if (rtd->dai_link->ignore_suspend)
680 if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control)
681 cpu_dai->driver->suspend(cpu_dai);
684 /* close any waiting streams */
685 list_for_each_entry(rtd, &card->rtd_list, list)
686 flush_delayed_work(&rtd->delayed_work);
688 list_for_each_entry(rtd, &card->rtd_list, list) {
690 if (rtd->dai_link->ignore_suspend)
693 snd_soc_dapm_stream_event(rtd,
694 SNDRV_PCM_STREAM_PLAYBACK,
695 SND_SOC_DAPM_STREAM_SUSPEND);
697 snd_soc_dapm_stream_event(rtd,
698 SNDRV_PCM_STREAM_CAPTURE,
699 SND_SOC_DAPM_STREAM_SUSPEND);
702 /* Recheck all endpoints too, their state is affected by suspend */
703 dapm_mark_endpoints_dirty(card);
704 snd_soc_dapm_sync(&card->dapm);
706 /* suspend all COMPONENTs */
707 list_for_each_entry(component, &card->component_dev_list, card_list) {
708 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
710 /* If there are paths active then the COMPONENT will be held with
711 * bias _ON and should not be suspended. */
712 if (!component->suspended) {
713 switch (snd_soc_dapm_get_bias_level(dapm)) {
714 case SND_SOC_BIAS_STANDBY:
716 * If the COMPONENT is capable of idle
717 * bias off then being in STANDBY
718 * means it's doing something,
719 * otherwise fall through.
721 if (dapm->idle_bias_off) {
722 dev_dbg(component->dev,
723 "ASoC: idle_bias_off CODEC on over suspend\n");
727 case SND_SOC_BIAS_OFF:
728 if (component->suspend)
729 component->suspend(component);
730 component->suspended = 1;
731 if (component->regmap)
732 regcache_mark_dirty(component->regmap);
733 /* deactivate pins to sleep state */
734 pinctrl_pm_select_sleep_state(component->dev);
737 dev_dbg(component->dev,
738 "ASoC: COMPONENT is on over suspend\n");
744 list_for_each_entry(rtd, &card->rtd_list, list) {
745 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
747 if (rtd->dai_link->ignore_suspend)
750 if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control)
751 cpu_dai->driver->suspend(cpu_dai);
753 /* deactivate pins to sleep state */
754 pinctrl_pm_select_sleep_state(cpu_dai->dev);
757 if (card->suspend_post)
758 card->suspend_post(card);
762 EXPORT_SYMBOL_GPL(snd_soc_suspend);
764 /* deferred resume work, so resume can complete before we finished
765 * setting our codec back up, which can be very slow on I2C
767 static void soc_resume_deferred(struct work_struct *work)
769 struct snd_soc_card *card =
770 container_of(work, struct snd_soc_card, deferred_resume_work);
771 struct snd_soc_pcm_runtime *rtd;
772 struct snd_soc_component *component;
775 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
776 * so userspace apps are blocked from touching us
779 dev_dbg(card->dev, "ASoC: starting resume work\n");
781 /* Bring us up into D2 so that DAPM starts enabling things */
782 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
784 if (card->resume_pre)
785 card->resume_pre(card);
787 /* resume control bus DAIs */
788 list_for_each_entry(rtd, &card->rtd_list, list) {
789 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
791 if (rtd->dai_link->ignore_suspend)
794 if (cpu_dai->driver->resume && cpu_dai->driver->bus_control)
795 cpu_dai->driver->resume(cpu_dai);
798 list_for_each_entry(component, &card->component_dev_list, card_list) {
799 if (component->suspended) {
800 if (component->resume)
801 component->resume(component);
802 component->suspended = 0;
806 list_for_each_entry(rtd, &card->rtd_list, list) {
808 if (rtd->dai_link->ignore_suspend)
811 snd_soc_dapm_stream_event(rtd,
812 SNDRV_PCM_STREAM_PLAYBACK,
813 SND_SOC_DAPM_STREAM_RESUME);
815 snd_soc_dapm_stream_event(rtd,
816 SNDRV_PCM_STREAM_CAPTURE,
817 SND_SOC_DAPM_STREAM_RESUME);
820 /* unmute any active DACs */
821 list_for_each_entry(rtd, &card->rtd_list, list) {
823 if (rtd->dai_link->ignore_suspend)
826 for (i = 0; i < rtd->num_codecs; i++) {
827 struct snd_soc_dai *dai = rtd->codec_dais[i];
828 struct snd_soc_dai_driver *drv = dai->driver;
830 if (drv->ops->digital_mute && dai->playback_active)
831 drv->ops->digital_mute(dai, 0);
835 list_for_each_entry(rtd, &card->rtd_list, list) {
836 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
838 if (rtd->dai_link->ignore_suspend)
841 if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control)
842 cpu_dai->driver->resume(cpu_dai);
845 if (card->resume_post)
846 card->resume_post(card);
848 dev_dbg(card->dev, "ASoC: resume work completed\n");
850 /* Recheck all endpoints too, their state is affected by suspend */
851 dapm_mark_endpoints_dirty(card);
852 snd_soc_dapm_sync(&card->dapm);
854 /* userspace can access us now we are back as we were before */
855 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
858 /* powers up audio subsystem after a suspend */
859 int snd_soc_resume(struct device *dev)
861 struct snd_soc_card *card = dev_get_drvdata(dev);
862 bool bus_control = false;
863 struct snd_soc_pcm_runtime *rtd;
865 /* If the card is not initialized yet there is nothing to do */
866 if (!card->instantiated)
869 /* activate pins from sleep state */
870 list_for_each_entry(rtd, &card->rtd_list, list) {
871 struct snd_soc_dai **codec_dais = rtd->codec_dais;
872 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
876 pinctrl_pm_select_default_state(cpu_dai->dev);
878 for (j = 0; j < rtd->num_codecs; j++) {
879 struct snd_soc_dai *codec_dai = codec_dais[j];
880 if (codec_dai->active)
881 pinctrl_pm_select_default_state(codec_dai->dev);
886 * DAIs that also act as the control bus master might have other drivers
887 * hanging off them so need to resume immediately. Other drivers don't
888 * have that problem and may take a substantial amount of time to resume
889 * due to I/O costs and anti-pop so handle them out of line.
891 list_for_each_entry(rtd, &card->rtd_list, list) {
892 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
893 bus_control |= cpu_dai->driver->bus_control;
896 dev_dbg(dev, "ASoC: Resuming control bus master immediately\n");
897 soc_resume_deferred(&card->deferred_resume_work);
899 dev_dbg(dev, "ASoC: Scheduling resume work\n");
900 if (!schedule_work(&card->deferred_resume_work))
901 dev_err(dev, "ASoC: resume work item may be lost\n");
906 EXPORT_SYMBOL_GPL(snd_soc_resume);
908 #define snd_soc_suspend NULL
909 #define snd_soc_resume NULL
912 static const struct snd_soc_dai_ops null_dai_ops = {
915 static struct snd_soc_component *soc_find_component(
916 const struct device_node *of_node, const char *name)
918 struct snd_soc_component *component;
920 lockdep_assert_held(&client_mutex);
922 list_for_each_entry(component, &component_list, list) {
924 if (component->dev->of_node == of_node)
926 } else if (strcmp(component->name, name) == 0) {
935 * snd_soc_find_dai - Find a registered DAI
937 * @dlc: name of the DAI and optional component info to match
939 * This function will search all registered components and their DAIs to
940 * find the DAI of the same name. The component's of_node and name
941 * should also match if being specified.
943 * Return: pointer of DAI, or NULL if not found.
945 struct snd_soc_dai *snd_soc_find_dai(
946 const struct snd_soc_dai_link_component *dlc)
948 struct snd_soc_component *component;
949 struct snd_soc_dai *dai;
950 struct device_node *component_of_node;
952 lockdep_assert_held(&client_mutex);
954 /* Find CPU DAI from registered DAIs*/
955 list_for_each_entry(component, &component_list, list) {
956 component_of_node = component->dev->of_node;
957 if (!component_of_node && component->dev->parent)
958 component_of_node = component->dev->parent->of_node;
960 if (dlc->of_node && component_of_node != dlc->of_node)
962 if (dlc->name && strcmp(component->name, dlc->name))
964 list_for_each_entry(dai, &component->dai_list, list) {
965 if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
974 EXPORT_SYMBOL_GPL(snd_soc_find_dai);
978 * snd_soc_find_dai_link - Find a DAI link
981 * @id: DAI link ID to match
982 * @name: DAI link name to match, optional
983 * @stream_name: DAI link stream name to match, optional
985 * This function will search all existing DAI links of the soc card to
986 * find the link of the same ID. Since DAI links may not have their
987 * unique ID, so name and stream name should also match if being
990 * Return: pointer of DAI link, or NULL if not found.
992 struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
993 int id, const char *name,
994 const char *stream_name)
996 struct snd_soc_dai_link *link, *_link;
998 lockdep_assert_held(&client_mutex);
1000 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1004 if (name && (!link->name || strcmp(name, link->name)))
1007 if (stream_name && (!link->stream_name
1008 || strcmp(stream_name, link->stream_name)))
1016 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link);
1018 static bool soc_is_dai_link_bound(struct snd_soc_card *card,
1019 struct snd_soc_dai_link *dai_link)
1021 struct snd_soc_pcm_runtime *rtd;
1023 list_for_each_entry(rtd, &card->rtd_list, list) {
1024 if (rtd->dai_link == dai_link)
1031 static int soc_bind_dai_link(struct snd_soc_card *card,
1032 struct snd_soc_dai_link *dai_link)
1034 struct snd_soc_pcm_runtime *rtd;
1035 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
1036 struct snd_soc_dai_link_component cpu_dai_component;
1037 struct snd_soc_dai **codec_dais;
1038 struct snd_soc_platform *platform;
1039 struct device_node *platform_of_node;
1040 const char *platform_name;
1043 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
1045 if (soc_is_dai_link_bound(card, dai_link)) {
1046 dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
1051 rtd = soc_new_pcm_runtime(card, dai_link);
1055 cpu_dai_component.name = dai_link->cpu_name;
1056 cpu_dai_component.of_node = dai_link->cpu_of_node;
1057 cpu_dai_component.dai_name = dai_link->cpu_dai_name;
1058 rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
1059 if (!rtd->cpu_dai) {
1060 dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
1061 dai_link->cpu_dai_name);
1065 rtd->num_codecs = dai_link->num_codecs;
1067 /* Find CODEC from registered CODECs */
1068 codec_dais = rtd->codec_dais;
1069 for (i = 0; i < rtd->num_codecs; i++) {
1070 codec_dais[i] = snd_soc_find_dai(&codecs[i]);
1071 if (!codec_dais[i]) {
1072 dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
1073 codecs[i].dai_name);
1078 /* Single codec links expect codec and codec_dai in runtime data */
1079 rtd->codec_dai = codec_dais[0];
1080 rtd->codec = rtd->codec_dai->codec;
1082 /* if there's no platform we match on the empty platform */
1083 platform_name = dai_link->platform_name;
1084 if (!platform_name && !dai_link->platform_of_node)
1085 platform_name = "snd-soc-dummy";
1087 /* find one from the set of registered platforms */
1088 list_for_each_entry(platform, &platform_list, list) {
1089 platform_of_node = platform->dev->of_node;
1090 if (!platform_of_node && platform->dev->parent->of_node)
1091 platform_of_node = platform->dev->parent->of_node;
1093 if (dai_link->platform_of_node) {
1094 if (platform_of_node != dai_link->platform_of_node)
1097 if (strcmp(platform->component.name, platform_name))
1101 rtd->platform = platform;
1103 if (!rtd->platform) {
1104 dev_err(card->dev, "ASoC: platform %s not registered\n",
1105 dai_link->platform_name);
1109 soc_add_pcm_runtime(card, rtd);
1113 soc_free_pcm_runtime(rtd);
1114 return -EPROBE_DEFER;
1117 static void soc_remove_component(struct snd_soc_component *component)
1119 if (!component->card)
1122 list_del(&component->card_list);
1124 if (component->remove)
1125 component->remove(component);
1127 snd_soc_dapm_free(snd_soc_component_get_dapm(component));
1129 soc_cleanup_component_debugfs(component);
1130 component->card = NULL;
1131 module_put(component->dev->driver->owner);
1134 static void soc_remove_dai(struct snd_soc_dai *dai, int order)
1138 if (dai && dai->probed &&
1139 dai->driver->remove_order == order) {
1140 if (dai->driver->remove) {
1141 err = dai->driver->remove(dai);
1144 "ASoC: failed to remove %s: %d\n",
1151 static void soc_remove_link_dais(struct snd_soc_card *card,
1152 struct snd_soc_pcm_runtime *rtd, int order)
1156 /* unregister the rtd device */
1157 if (rtd->dev_registered) {
1158 device_unregister(rtd->dev);
1159 rtd->dev_registered = 0;
1162 /* remove the CODEC DAI */
1163 for (i = 0; i < rtd->num_codecs; i++)
1164 soc_remove_dai(rtd->codec_dais[i], order);
1166 soc_remove_dai(rtd->cpu_dai, order);
1169 static void soc_remove_link_components(struct snd_soc_card *card,
1170 struct snd_soc_pcm_runtime *rtd, int order)
1172 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1173 struct snd_soc_platform *platform = rtd->platform;
1174 struct snd_soc_component *component;
1177 /* remove the platform */
1178 if (platform && platform->component.driver->remove_order == order)
1179 soc_remove_component(&platform->component);
1181 /* remove the CODEC-side CODEC */
1182 for (i = 0; i < rtd->num_codecs; i++) {
1183 component = rtd->codec_dais[i]->component;
1184 if (component->driver->remove_order == order)
1185 soc_remove_component(component);
1188 /* remove any CPU-side CODEC */
1190 if (cpu_dai->component->driver->remove_order == order)
1191 soc_remove_component(cpu_dai->component);
1195 static void soc_remove_dai_links(struct snd_soc_card *card)
1198 struct snd_soc_pcm_runtime *rtd;
1199 struct snd_soc_dai_link *link, *_link;
1201 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1203 list_for_each_entry(rtd, &card->rtd_list, list)
1204 soc_remove_link_dais(card, rtd, order);
1207 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1209 list_for_each_entry(rtd, &card->rtd_list, list)
1210 soc_remove_link_components(card, rtd, order);
1213 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1214 if (link->dobj.type == SND_SOC_DOBJ_DAI_LINK)
1215 dev_warn(card->dev, "Topology forgot to remove link %s?\n",
1218 list_del(&link->list);
1219 card->num_dai_links--;
1223 static int snd_soc_init_multicodec(struct snd_soc_card *card,
1224 struct snd_soc_dai_link *dai_link)
1226 /* Legacy codec/codec_dai link is a single entry in multicodec */
1227 if (dai_link->codec_name || dai_link->codec_of_node ||
1228 dai_link->codec_dai_name) {
1229 dai_link->num_codecs = 1;
1231 dai_link->codecs = devm_kzalloc(card->dev,
1232 sizeof(struct snd_soc_dai_link_component),
1234 if (!dai_link->codecs)
1237 dai_link->codecs[0].name = dai_link->codec_name;
1238 dai_link->codecs[0].of_node = dai_link->codec_of_node;
1239 dai_link->codecs[0].dai_name = dai_link->codec_dai_name;
1242 if (!dai_link->codecs) {
1243 dev_err(card->dev, "ASoC: DAI link has no CODECs\n");
1250 static int soc_init_dai_link(struct snd_soc_card *card,
1251 struct snd_soc_dai_link *link)
1255 ret = snd_soc_init_multicodec(card, link);
1257 dev_err(card->dev, "ASoC: failed to init multicodec\n");
1261 for (i = 0; i < link->num_codecs; i++) {
1263 * Codec must be specified by 1 of name or OF node,
1264 * not both or neither.
1266 if (!!link->codecs[i].name ==
1267 !!link->codecs[i].of_node) {
1268 dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n",
1272 /* Codec DAI name must be specified */
1273 if (!link->codecs[i].dai_name) {
1274 dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
1281 * Platform may be specified by either name or OF node, but
1282 * can be left unspecified, and a dummy platform will be used.
1284 if (link->platform_name && link->platform_of_node) {
1286 "ASoC: Both platform name/of_node are set for %s\n",
1292 * CPU device may be specified by either name or OF node, but
1293 * can be left unspecified, and will be matched based on DAI
1296 if (link->cpu_name && link->cpu_of_node) {
1298 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1303 * At least one of CPU DAI name or CPU device name/node must be
1306 if (!link->cpu_dai_name &&
1307 !(link->cpu_name || link->cpu_of_node)) {
1309 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1318 * snd_soc_add_dai_link - Add a DAI link dynamically
1319 * @card: The ASoC card to which the DAI link is added
1320 * @dai_link: The new DAI link to add
1322 * This function adds a DAI link to the ASoC card's link list.
1324 * Note: Topology can use this API to add DAI links when probing the
1325 * topology component. And machine drivers can still define static
1326 * DAI links in dai_link array.
1328 int snd_soc_add_dai_link(struct snd_soc_card *card,
1329 struct snd_soc_dai_link *dai_link)
1331 if (dai_link->dobj.type
1332 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1333 dev_err(card->dev, "Invalid dai link type %d\n",
1334 dai_link->dobj.type);
1338 lockdep_assert_held(&client_mutex);
1339 /* Notify the machine driver for extra initialization
1340 * on the link created by topology.
1342 if (dai_link->dobj.type && card->add_dai_link)
1343 card->add_dai_link(card, dai_link);
1345 list_add_tail(&dai_link->list, &card->dai_link_list);
1346 card->num_dai_links++;
1350 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link);
1353 * snd_soc_remove_dai_link - Remove a DAI link from the list
1354 * @card: The ASoC card that owns the link
1355 * @dai_link: The DAI link to remove
1357 * This function removes a DAI link from the ASoC card's link list.
1359 * For DAI links previously added by topology, topology should
1360 * remove them by using the dobj embedded in the link.
1362 void snd_soc_remove_dai_link(struct snd_soc_card *card,
1363 struct snd_soc_dai_link *dai_link)
1365 struct snd_soc_dai_link *link, *_link;
1367 if (dai_link->dobj.type
1368 && dai_link->dobj.type != SND_SOC_DOBJ_DAI_LINK) {
1369 dev_err(card->dev, "Invalid dai link type %d\n",
1370 dai_link->dobj.type);
1374 lockdep_assert_held(&client_mutex);
1375 /* Notify the machine driver for extra destruction
1376 * on the link created by topology.
1378 if (dai_link->dobj.type && card->remove_dai_link)
1379 card->remove_dai_link(card, dai_link);
1381 list_for_each_entry_safe(link, _link, &card->dai_link_list, list) {
1382 if (link == dai_link) {
1383 list_del(&link->list);
1384 card->num_dai_links--;
1389 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link);
1391 static void soc_set_name_prefix(struct snd_soc_card *card,
1392 struct snd_soc_component *component)
1396 if (card->codec_conf == NULL)
1399 for (i = 0; i < card->num_configs; i++) {
1400 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1401 if (map->of_node && component->dev->of_node != map->of_node)
1403 if (map->dev_name && strcmp(component->name, map->dev_name))
1405 component->name_prefix = map->name_prefix;
1410 static int soc_probe_component(struct snd_soc_card *card,
1411 struct snd_soc_component *component)
1413 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
1414 struct snd_soc_dai *dai;
1417 if (!strcmp(component->name, "snd-soc-dummy"))
1420 if (component->card) {
1421 if (component->card != card) {
1422 dev_err(component->dev,
1423 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1424 card->name, component->card->name);
1430 if (!try_module_get(component->dev->driver->owner))
1433 component->card = card;
1435 soc_set_name_prefix(card, component);
1437 soc_init_component_debugfs(component);
1439 if (component->dapm_widgets) {
1440 ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets,
1441 component->num_dapm_widgets);
1444 dev_err(component->dev,
1445 "Failed to create new controls %d\n", ret);
1450 list_for_each_entry(dai, &component->dai_list, list) {
1451 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
1453 dev_err(component->dev,
1454 "Failed to create DAI widgets %d\n", ret);
1459 if (component->probe) {
1460 ret = component->probe(component);
1462 dev_err(component->dev,
1463 "ASoC: failed to probe component %d\n", ret);
1467 WARN(dapm->idle_bias_off &&
1468 dapm->bias_level != SND_SOC_BIAS_OFF,
1469 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1473 /* machine specific init */
1474 if (component->init) {
1475 ret = component->init(component);
1477 dev_err(component->dev,
1478 "Failed to do machine specific init %d\n", ret);
1483 if (component->controls)
1484 snd_soc_add_component_controls(component, component->controls,
1485 component->num_controls);
1486 if (component->dapm_routes)
1487 snd_soc_dapm_add_routes(dapm, component->dapm_routes,
1488 component->num_dapm_routes);
1490 list_add(&dapm->list, &card->dapm_list);
1491 list_add(&component->card_list, &card->component_dev_list);
1496 soc_cleanup_component_debugfs(component);
1497 component->card = NULL;
1498 module_put(component->dev->driver->owner);
1503 static void rtd_release(struct device *dev)
1508 static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
1513 /* register the rtd device */
1514 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1517 device_initialize(rtd->dev);
1518 rtd->dev->parent = rtd->card->dev;
1519 rtd->dev->release = rtd_release;
1520 rtd->dev->groups = soc_dev_attr_groups;
1521 dev_set_name(rtd->dev, "%s", name);
1522 dev_set_drvdata(rtd->dev, rtd);
1523 mutex_init(&rtd->pcm_mutex);
1524 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1525 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1526 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1527 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1528 ret = device_add(rtd->dev);
1530 /* calling put_device() here to free the rtd->dev */
1531 put_device(rtd->dev);
1532 dev_err(rtd->card->dev,
1533 "ASoC: failed to register runtime device: %d\n", ret);
1536 rtd->dev_registered = 1;
1540 static int soc_probe_link_components(struct snd_soc_card *card,
1541 struct snd_soc_pcm_runtime *rtd,
1544 struct snd_soc_platform *platform = rtd->platform;
1545 struct snd_soc_component *component;
1548 /* probe the CPU-side component, if it is a CODEC */
1549 component = rtd->cpu_dai->component;
1550 if (component->driver->probe_order == order) {
1551 ret = soc_probe_component(card, component);
1556 /* probe the CODEC-side components */
1557 for (i = 0; i < rtd->num_codecs; i++) {
1558 component = rtd->codec_dais[i]->component;
1559 if (component->driver->probe_order == order) {
1560 ret = soc_probe_component(card, component);
1566 /* probe the platform */
1567 if (platform->component.driver->probe_order == order) {
1568 ret = soc_probe_component(card, &platform->component);
1576 static int soc_probe_dai(struct snd_soc_dai *dai, int order)
1580 if (!dai->probed && dai->driver->probe_order == order) {
1581 if (dai->driver->probe) {
1582 ret = dai->driver->probe(dai);
1585 "ASoC: failed to probe DAI %s: %d\n",
1597 static int soc_link_dai_pcm_new(struct snd_soc_dai **dais, int num_dais,
1598 struct snd_soc_pcm_runtime *rtd)
1602 for (i = 0; i < num_dais; ++i) {
1603 struct snd_soc_dai_driver *drv = dais[i]->driver;
1605 if (!rtd->dai_link->no_pcm && drv->pcm_new)
1606 ret = drv->pcm_new(rtd, dais[i]);
1608 dev_err(dais[i]->dev,
1609 "ASoC: Failed to bind %s with pcm device\n",
1618 static int soc_link_dai_widgets(struct snd_soc_card *card,
1619 struct snd_soc_dai_link *dai_link,
1620 struct snd_soc_pcm_runtime *rtd)
1622 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1623 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1624 struct snd_soc_dapm_widget *sink, *source;
1627 if (rtd->num_codecs > 1)
1628 dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
1630 /* link the DAI widgets */
1631 sink = codec_dai->playback_widget;
1632 source = cpu_dai->capture_widget;
1633 if (sink && source) {
1634 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1635 dai_link->num_params,
1638 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1639 sink->name, source->name, ret);
1644 sink = cpu_dai->playback_widget;
1645 source = codec_dai->capture_widget;
1646 if (sink && source) {
1647 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1648 dai_link->num_params,
1651 dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
1652 sink->name, source->name, ret);
1660 static int soc_probe_link_dais(struct snd_soc_card *card,
1661 struct snd_soc_pcm_runtime *rtd, int order)
1663 struct snd_soc_dai_link *dai_link = rtd->dai_link;
1664 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1667 dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n",
1668 card->name, rtd->num, order);
1670 /* set default power off timeout */
1671 rtd->pmdown_time = pmdown_time;
1673 ret = soc_probe_dai(cpu_dai, order);
1677 /* probe the CODEC DAI */
1678 for (i = 0; i < rtd->num_codecs; i++) {
1679 ret = soc_probe_dai(rtd->codec_dais[i], order);
1684 /* complete DAI probe during last probe */
1685 if (order != SND_SOC_COMP_ORDER_LAST)
1688 /* do machine specific initialization */
1689 if (dai_link->init) {
1690 ret = dai_link->init(rtd);
1692 dev_err(card->dev, "ASoC: failed to init %s: %d\n",
1693 dai_link->name, ret);
1698 if (dai_link->dai_fmt)
1699 snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
1701 ret = soc_post_component_init(rtd, dai_link->name);
1705 #ifdef CONFIG_DEBUG_FS
1706 /* add DPCM sysfs entries */
1707 if (dai_link->dynamic)
1708 soc_dpcm_debugfs_add(rtd);
1711 if (cpu_dai->driver->compress_new) {
1712 /*create compress_device"*/
1713 ret = cpu_dai->driver->compress_new(rtd, rtd->num);
1715 dev_err(card->dev, "ASoC: can't create compress %s\n",
1716 dai_link->stream_name);
1721 if (!dai_link->params) {
1722 /* create the pcm */
1723 ret = soc_new_pcm(rtd, rtd->num);
1725 dev_err(card->dev, "ASoC: can't create pcm %s :%d\n",
1726 dai_link->stream_name, ret);
1729 ret = soc_link_dai_pcm_new(&cpu_dai, 1, rtd);
1732 ret = soc_link_dai_pcm_new(rtd->codec_dais,
1733 rtd->num_codecs, rtd);
1737 INIT_DELAYED_WORK(&rtd->delayed_work,
1738 codec2codec_close_delayed_work);
1740 /* link the DAI widgets */
1741 ret = soc_link_dai_widgets(card, dai_link, rtd);
1750 static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
1752 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1753 struct snd_soc_component *component;
1755 struct device_node *codec_of_node;
1757 if (aux_dev->codec_of_node || aux_dev->codec_name) {
1758 /* codecs, usually analog devices */
1759 name = aux_dev->codec_name;
1760 codec_of_node = aux_dev->codec_of_node;
1761 component = soc_find_component(codec_of_node, name);
1764 name = of_node_full_name(codec_of_node);
1767 } else if (aux_dev->name) {
1768 /* generic components */
1769 name = aux_dev->name;
1770 component = soc_find_component(NULL, name);
1774 dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
1778 component->init = aux_dev->init;
1779 list_add(&component->card_aux_list, &card->aux_comp_list);
1784 dev_err(card->dev, "ASoC: %s not registered\n", name);
1785 return -EPROBE_DEFER;
1788 static int soc_probe_aux_devices(struct snd_soc_card *card)
1790 struct snd_soc_component *comp;
1794 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1796 list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) {
1797 if (comp->driver->probe_order == order) {
1798 ret = soc_probe_component(card, comp);
1801 "ASoC: failed to probe aux component %s %d\n",
1812 static void soc_remove_aux_devices(struct snd_soc_card *card)
1814 struct snd_soc_component *comp, *_comp;
1817 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1819 list_for_each_entry_safe(comp, _comp,
1820 &card->aux_comp_list, card_aux_list) {
1822 if (comp->driver->remove_order == order) {
1823 soc_remove_component(comp);
1824 /* remove it from the card's aux_comp_list */
1825 list_del(&comp->card_aux_list);
1831 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
1835 if (codec->cache_init)
1838 ret = snd_soc_cache_init(codec);
1841 "ASoC: Failed to set cache compression type: %d\n",
1845 codec->cache_init = 1;
1850 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1851 * @rtd: The runtime for which the DAI link format should be changed
1852 * @dai_fmt: The new DAI link format
1854 * This function updates the DAI link format for all DAIs connected to the DAI
1855 * link for the specified runtime.
1857 * Note: For setups with a static format set the dai_fmt field in the
1858 * corresponding snd_dai_link struct instead of using this function.
1860 * Returns 0 on success, otherwise a negative error code.
1862 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
1863 unsigned int dai_fmt)
1865 struct snd_soc_dai **codec_dais = rtd->codec_dais;
1866 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1870 for (i = 0; i < rtd->num_codecs; i++) {
1871 struct snd_soc_dai *codec_dai = codec_dais[i];
1873 ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
1874 if (ret != 0 && ret != -ENOTSUPP) {
1875 dev_warn(codec_dai->dev,
1876 "ASoC: Failed to set DAI format: %d\n", ret);
1881 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1882 if (cpu_dai->codec) {
1883 unsigned int inv_dai_fmt;
1885 inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
1886 switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1887 case SND_SOC_DAIFMT_CBM_CFM:
1888 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1890 case SND_SOC_DAIFMT_CBM_CFS:
1891 inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1893 case SND_SOC_DAIFMT_CBS_CFM:
1894 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1896 case SND_SOC_DAIFMT_CBS_CFS:
1897 inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1901 dai_fmt = inv_dai_fmt;
1904 ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
1905 if (ret != 0 && ret != -ENOTSUPP) {
1906 dev_warn(cpu_dai->dev,
1907 "ASoC: Failed to set DAI format: %d\n", ret);
1913 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
1917 /* Trim special characters, and replace '-' with '_' since '-' is used to
1918 * separate different DMI fields in the card long name. Only number and
1919 * alphabet characters and a few separator characters are kept.
1921 static void cleanup_dmi_name(char *name)
1925 for (i = 0; name[i]; i++) {
1926 if (isalnum(name[i]) || (name[i] == '.')
1927 || (name[i] == '_'))
1928 name[j++] = name[i];
1929 else if (name[i] == '-')
1937 * snd_soc_set_dmi_name() - Register DMI names to card
1938 * @card: The card to register DMI names
1939 * @flavour: The flavour "differentiator" for the card amongst its peers.
1941 * An Intel machine driver may be used by many different devices but are
1942 * difficult for userspace to differentiate, since machine drivers ususally
1943 * use their own name as the card short name and leave the card long name
1944 * blank. To differentiate such devices and fix bugs due to lack of
1945 * device-specific configurations, this function allows DMI info to be used
1946 * as the sound card long name, in the format of
1947 * "vendor-product-version-board"
1948 * (Character '-' is used to separate different DMI fields here).
1949 * This will help the user space to load the device-specific Use Case Manager
1950 * (UCM) configurations for the card.
1952 * Possible card long names may be:
1953 * DellInc.-XPS139343-01-0310JH
1954 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
1955 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
1957 * This function also supports flavoring the card longname to provide
1958 * the extra differentiation, like "vendor-product-version-board-flavor".
1960 * We only keep number and alphabet characters and a few separator characters
1961 * in the card long name since UCM in the user space uses the card long names
1962 * as card configuration directory names and AudoConf cannot support special
1963 * charactors like SPACE.
1965 * Returns 0 on success, otherwise a negative error code.
1967 int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour)
1969 const char *vendor, *product, *product_version, *board;
1970 size_t longname_buf_size = sizeof(card->snd_card->longname);
1973 if (card->long_name)
1974 return 0; /* long name already set by driver or from DMI */
1976 /* make up dmi long name as: vendor.product.version.board */
1977 vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1979 dev_warn(card->dev, "ASoC: no DMI vendor name!\n");
1983 snprintf(card->dmi_longname, sizeof(card->snd_card->longname),
1985 cleanup_dmi_name(card->dmi_longname);
1987 product = dmi_get_system_info(DMI_PRODUCT_NAME);
1989 len = strlen(card->dmi_longname);
1990 snprintf(card->dmi_longname + len,
1991 longname_buf_size - len,
1994 len++; /* skip the separator "-" */
1995 if (len < longname_buf_size)
1996 cleanup_dmi_name(card->dmi_longname + len);
1998 /* some vendors like Lenovo may only put a self-explanatory
1999 * name in the product version field
2001 product_version = dmi_get_system_info(DMI_PRODUCT_VERSION);
2002 if (product_version) {
2003 len = strlen(card->dmi_longname);
2004 snprintf(card->dmi_longname + len,
2005 longname_buf_size - len,
2006 "-%s", product_version);
2009 if (len < longname_buf_size)
2010 cleanup_dmi_name(card->dmi_longname + len);
2014 board = dmi_get_system_info(DMI_BOARD_NAME);
2016 len = strlen(card->dmi_longname);
2017 snprintf(card->dmi_longname + len,
2018 longname_buf_size - len,
2022 if (len < longname_buf_size)
2023 cleanup_dmi_name(card->dmi_longname + len);
2024 } else if (!product) {
2025 /* fall back to using legacy name */
2026 dev_warn(card->dev, "ASoC: no DMI board/product name!\n");
2030 /* Add flavour to dmi long name */
2032 len = strlen(card->dmi_longname);
2033 snprintf(card->dmi_longname + len,
2034 longname_buf_size - len,
2038 if (len < longname_buf_size)
2039 cleanup_dmi_name(card->dmi_longname + len);
2042 /* set the card long name */
2043 card->long_name = card->dmi_longname;
2047 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name);
2048 #endif /* CONFIG_DMI */
2050 static int snd_soc_instantiate_card(struct snd_soc_card *card)
2052 struct snd_soc_codec *codec;
2053 struct snd_soc_pcm_runtime *rtd;
2054 struct snd_soc_dai_link *dai_link;
2057 mutex_lock(&client_mutex);
2058 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
2061 for (i = 0; i < card->num_links; i++) {
2062 ret = soc_bind_dai_link(card, &card->dai_link[i]);
2067 /* bind aux_devs too */
2068 for (i = 0; i < card->num_aux_devs; i++) {
2069 ret = soc_bind_aux_dev(card, i);
2074 /* add predefined DAI links to the list */
2075 for (i = 0; i < card->num_links; i++)
2076 snd_soc_add_dai_link(card, card->dai_link+i);
2078 /* initialize the register cache for each available codec */
2079 list_for_each_entry(codec, &codec_list, list) {
2080 if (codec->cache_init)
2082 ret = snd_soc_init_codec_cache(codec);
2087 /* card bind complete so register a sound card */
2088 ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
2089 card->owner, 0, &card->snd_card);
2092 "ASoC: can't create sound card for card %s: %d\n",
2097 soc_init_card_debugfs(card);
2099 card->dapm.bias_level = SND_SOC_BIAS_OFF;
2100 card->dapm.dev = card->dev;
2101 card->dapm.card = card;
2102 list_add(&card->dapm.list, &card->dapm_list);
2104 #ifdef CONFIG_DEBUG_FS
2105 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
2108 #ifdef CONFIG_PM_SLEEP
2109 /* deferred resume work */
2110 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
2113 if (card->dapm_widgets)
2114 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
2115 card->num_dapm_widgets);
2117 if (card->of_dapm_widgets)
2118 snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets,
2119 card->num_of_dapm_widgets);
2121 /* initialise the sound card only once */
2123 ret = card->probe(card);
2125 goto card_probe_error;
2128 /* probe all components used by DAI links on this card */
2129 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2131 list_for_each_entry(rtd, &card->rtd_list, list) {
2132 ret = soc_probe_link_components(card, rtd, order);
2135 "ASoC: failed to instantiate card %d\n",
2142 /* probe auxiliary components */
2143 ret = soc_probe_aux_devices(card);
2147 /* Find new DAI links added during probing components and bind them.
2148 * Components with topology may bring new DAIs and DAI links.
2150 list_for_each_entry(dai_link, &card->dai_link_list, list) {
2151 if (soc_is_dai_link_bound(card, dai_link))
2154 ret = soc_init_dai_link(card, dai_link);
2157 ret = soc_bind_dai_link(card, dai_link);
2162 /* probe all DAI links on this card */
2163 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
2165 list_for_each_entry(rtd, &card->rtd_list, list) {
2166 ret = soc_probe_link_dais(card, rtd, order);
2169 "ASoC: failed to instantiate card %d\n",
2176 snd_soc_dapm_link_dai_widgets(card);
2177 snd_soc_dapm_connect_dai_link_widgets(card);
2180 snd_soc_add_card_controls(card, card->controls, card->num_controls);
2182 if (card->dapm_routes)
2183 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
2184 card->num_dapm_routes);
2186 if (card->of_dapm_routes)
2187 snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
2188 card->num_of_dapm_routes);
2190 /* try to set some sane longname if DMI is available */
2191 snd_soc_set_dmi_name(card, NULL);
2193 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
2195 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
2196 "%s", card->long_name ? card->long_name : card->name);
2197 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
2198 "%s", card->driver_name ? card->driver_name : card->name);
2199 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
2200 switch (card->snd_card->driver[i]) {
2206 if (!isalnum(card->snd_card->driver[i]))
2207 card->snd_card->driver[i] = '_';
2212 if (card->late_probe) {
2213 ret = card->late_probe(card);
2215 dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n",
2217 goto probe_aux_dev_err;
2221 snd_soc_dapm_new_widgets(card);
2223 ret = snd_card_register(card->snd_card);
2225 dev_err(card->dev, "ASoC: failed to register soundcard %d\n",
2227 goto probe_aux_dev_err;
2230 card->instantiated = 1;
2231 snd_soc_dapm_sync(&card->dapm);
2232 mutex_unlock(&card->mutex);
2233 mutex_unlock(&client_mutex);
2238 soc_remove_aux_devices(card);
2241 soc_remove_dai_links(card);
2247 snd_soc_dapm_free(&card->dapm);
2248 soc_cleanup_card_debugfs(card);
2249 snd_card_free(card->snd_card);
2252 soc_remove_pcm_runtimes(card);
2253 mutex_unlock(&card->mutex);
2254 mutex_unlock(&client_mutex);
2259 /* probes a new socdev */
2260 static int soc_probe(struct platform_device *pdev)
2262 struct snd_soc_card *card = platform_get_drvdata(pdev);
2265 * no card, so machine driver should be registering card
2266 * we should not be here in that case so ret error
2271 dev_warn(&pdev->dev,
2272 "ASoC: machine %s should use snd_soc_register_card()\n",
2275 /* Bodge while we unpick instantiation */
2276 card->dev = &pdev->dev;
2278 return snd_soc_register_card(card);
2281 static int soc_cleanup_card_resources(struct snd_soc_card *card)
2283 struct snd_soc_pcm_runtime *rtd;
2285 /* make sure any delayed work runs */
2286 list_for_each_entry(rtd, &card->rtd_list, list)
2287 flush_delayed_work(&rtd->delayed_work);
2289 /* free the ALSA card at first; this syncs with pending operations */
2290 snd_card_free(card->snd_card);
2292 /* remove and free each DAI */
2293 soc_remove_dai_links(card);
2294 soc_remove_pcm_runtimes(card);
2296 /* remove auxiliary devices */
2297 soc_remove_aux_devices(card);
2299 snd_soc_dapm_free(&card->dapm);
2300 soc_cleanup_card_debugfs(card);
2302 /* remove the card */
2309 /* removes a socdev */
2310 static int soc_remove(struct platform_device *pdev)
2312 struct snd_soc_card *card = platform_get_drvdata(pdev);
2314 snd_soc_unregister_card(card);
2318 int snd_soc_poweroff(struct device *dev)
2320 struct snd_soc_card *card = dev_get_drvdata(dev);
2321 struct snd_soc_pcm_runtime *rtd;
2323 if (!card->instantiated)
2326 /* Flush out pmdown_time work - we actually do want to run it
2327 * now, we're shutting down so no imminent restart. */
2328 list_for_each_entry(rtd, &card->rtd_list, list)
2329 flush_delayed_work(&rtd->delayed_work);
2331 snd_soc_dapm_shutdown(card);
2333 /* deactivate pins to sleep state */
2334 list_for_each_entry(rtd, &card->rtd_list, list) {
2335 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2338 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2339 for (i = 0; i < rtd->num_codecs; i++) {
2340 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
2341 pinctrl_pm_select_sleep_state(codec_dai->dev);
2347 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
2349 const struct dev_pm_ops snd_soc_pm_ops = {
2350 .suspend = snd_soc_suspend,
2351 .resume = snd_soc_resume,
2352 .freeze = snd_soc_suspend,
2353 .thaw = snd_soc_resume,
2354 .poweroff = snd_soc_poweroff,
2355 .restore = snd_soc_resume,
2357 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
2359 /* ASoC platform driver */
2360 static struct platform_driver soc_driver = {
2362 .name = "soc-audio",
2363 .pm = &snd_soc_pm_ops,
2366 .remove = soc_remove,
2370 * snd_soc_cnew - create new control
2371 * @_template: control template
2372 * @data: control private data
2373 * @long_name: control long name
2374 * @prefix: control name prefix
2376 * Create a new mixer control from a template control.
2378 * Returns 0 for success, else error.
2380 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2381 void *data, const char *long_name,
2384 struct snd_kcontrol_new template;
2385 struct snd_kcontrol *kcontrol;
2388 memcpy(&template, _template, sizeof(template));
2392 long_name = template.name;
2395 name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name);
2399 template.name = name;
2401 template.name = long_name;
2404 kcontrol = snd_ctl_new1(&template, data);
2410 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2412 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2413 const struct snd_kcontrol_new *controls, int num_controls,
2414 const char *prefix, void *data)
2418 for (i = 0; i < num_controls; i++) {
2419 const struct snd_kcontrol_new *control = &controls[i];
2420 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2421 control->name, prefix));
2423 dev_err(dev, "ASoC: Failed to add %s: %d\n",
2424 control->name, err);
2432 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
2435 struct snd_card *card = soc_card->snd_card;
2436 struct snd_kcontrol *kctl;
2438 if (unlikely(!name))
2441 list_for_each_entry(kctl, &card->controls, list)
2442 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
2446 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
2449 * snd_soc_add_component_controls - Add an array of controls to a component.
2451 * @component: Component to add controls to
2452 * @controls: Array of controls to add
2453 * @num_controls: Number of elements in the array
2455 * Return: 0 for success, else error.
2457 int snd_soc_add_component_controls(struct snd_soc_component *component,
2458 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2460 struct snd_card *card = component->card->snd_card;
2462 return snd_soc_add_controls(card, component->dev, controls,
2463 num_controls, component->name_prefix, component);
2465 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
2468 * snd_soc_add_codec_controls - add an array of controls to a codec.
2469 * Convenience function to add a list of controls. Many codecs were
2470 * duplicating this code.
2472 * @codec: codec to add controls to
2473 * @controls: array of controls to add
2474 * @num_controls: number of elements in the array
2476 * Return 0 for success, else error.
2478 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2479 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2481 return snd_soc_add_component_controls(&codec->component, controls,
2484 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2487 * snd_soc_add_platform_controls - add an array of controls to a platform.
2488 * Convenience function to add a list of controls.
2490 * @platform: platform to add controls to
2491 * @controls: array of controls to add
2492 * @num_controls: number of elements in the array
2494 * Return 0 for success, else error.
2496 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2497 const struct snd_kcontrol_new *controls, unsigned int num_controls)
2499 return snd_soc_add_component_controls(&platform->component, controls,
2502 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2505 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2506 * Convenience function to add a list of controls.
2508 * @soc_card: SoC card to add controls to
2509 * @controls: array of controls to add
2510 * @num_controls: number of elements in the array
2512 * Return 0 for success, else error.
2514 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2515 const struct snd_kcontrol_new *controls, int num_controls)
2517 struct snd_card *card = soc_card->snd_card;
2519 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2522 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2525 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2526 * Convienience function to add a list of controls.
2528 * @dai: DAI to add controls to
2529 * @controls: array of controls to add
2530 * @num_controls: number of elements in the array
2532 * Return 0 for success, else error.
2534 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2535 const struct snd_kcontrol_new *controls, int num_controls)
2537 struct snd_card *card = dai->component->card->snd_card;
2539 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2542 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2545 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2547 * @clk_id: DAI specific clock ID
2548 * @freq: new clock frequency in Hz
2549 * @dir: new clock direction - input/output.
2551 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2553 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2554 unsigned int freq, int dir)
2556 if (dai->driver && dai->driver->ops->set_sysclk)
2557 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2558 else if (dai->codec && dai->codec->driver->set_sysclk)
2559 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2564 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2567 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2569 * @clk_id: DAI specific clock ID
2570 * @source: Source for the clock
2571 * @freq: new clock frequency in Hz
2572 * @dir: new clock direction - input/output.
2574 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2576 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2577 int source, unsigned int freq, int dir)
2579 if (codec->driver->set_sysclk)
2580 return codec->driver->set_sysclk(codec, clk_id, source,
2585 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2588 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2590 * @div_id: DAI specific clock divider ID
2591 * @div: new clock divisor.
2593 * Configures the clock dividers. This is used to derive the best DAI bit and
2594 * frame clocks from the system or master clock. It's best to set the DAI bit
2595 * and frame clocks as low as possible to save system power.
2597 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2598 int div_id, int div)
2600 if (dai->driver && dai->driver->ops->set_clkdiv)
2601 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2605 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2608 * snd_soc_dai_set_pll - configure DAI PLL.
2610 * @pll_id: DAI specific PLL ID
2611 * @source: DAI specific source for the PLL
2612 * @freq_in: PLL input clock frequency in Hz
2613 * @freq_out: requested PLL output clock frequency in Hz
2615 * Configures and enables PLL to generate output clock based on input clock.
2617 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2618 unsigned int freq_in, unsigned int freq_out)
2620 if (dai->driver && dai->driver->ops->set_pll)
2621 return dai->driver->ops->set_pll(dai, pll_id, source,
2623 else if (dai->codec && dai->codec->driver->set_pll)
2624 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2629 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2632 * snd_soc_codec_set_pll - configure codec PLL.
2634 * @pll_id: DAI specific PLL ID
2635 * @source: DAI specific source for the PLL
2636 * @freq_in: PLL input clock frequency in Hz
2637 * @freq_out: requested PLL output clock frequency in Hz
2639 * Configures and enables PLL to generate output clock based on input clock.
2641 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2642 unsigned int freq_in, unsigned int freq_out)
2644 if (codec->driver->set_pll)
2645 return codec->driver->set_pll(codec, pll_id, source,
2650 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2653 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2655 * @ratio: Ratio of BCLK to Sample rate.
2657 * Configures the DAI for a preset BCLK to sample rate ratio.
2659 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
2661 if (dai->driver && dai->driver->ops->set_bclk_ratio)
2662 return dai->driver->ops->set_bclk_ratio(dai, ratio);
2666 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio);
2669 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2671 * @fmt: SND_SOC_DAIFMT_ format value.
2673 * Configures the DAI hardware format and clocking.
2675 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2677 if (dai->driver == NULL)
2679 if (dai->driver->ops->set_fmt == NULL)
2681 return dai->driver->ops->set_fmt(dai, fmt);
2683 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2686 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2687 * @slots: Number of slots in use.
2688 * @tx_mask: bitmask representing active TX slots.
2689 * @rx_mask: bitmask representing active RX slots.
2691 * Generates the TDM tx and rx slot default masks for DAI.
2693 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots,
2694 unsigned int *tx_mask,
2695 unsigned int *rx_mask)
2697 if (*tx_mask || *rx_mask)
2703 *tx_mask = (1 << slots) - 1;
2704 *rx_mask = (1 << slots) - 1;
2710 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2711 * @dai: The DAI to configure
2712 * @tx_mask: bitmask representing active TX slots.
2713 * @rx_mask: bitmask representing active RX slots.
2714 * @slots: Number of slots in use.
2715 * @slot_width: Width in bits for each slot.
2717 * This function configures the specified DAI for TDM operation. @slot contains
2718 * the total number of slots of the TDM stream and @slot_with the width of each
2719 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2720 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2721 * DAI should write to or read from. If a bit is set the corresponding slot is
2722 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2723 * the first slot, bit 1 to the second slot and so on. The first active slot
2724 * maps to the first channel of the DAI, the second active slot to the second
2725 * channel and so on.
2727 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2728 * @rx_mask and @slot_width will be ignored.
2730 * Returns 0 on success, a negative error code otherwise.
2732 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2733 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2735 if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask)
2736 dai->driver->ops->xlate_tdm_slot_mask(slots,
2737 &tx_mask, &rx_mask);
2739 snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask);
2741 dai->tx_mask = tx_mask;
2742 dai->rx_mask = rx_mask;
2744 if (dai->driver && dai->driver->ops->set_tdm_slot)
2745 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2750 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2753 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2755 * @tx_num: how many TX channels
2756 * @tx_slot: pointer to an array which imply the TX slot number channel
2758 * @rx_num: how many RX channels
2759 * @rx_slot: pointer to an array which imply the RX slot number channel
2762 * configure the relationship between channel number and TDM slot number.
2764 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2765 unsigned int tx_num, unsigned int *tx_slot,
2766 unsigned int rx_num, unsigned int *rx_slot)
2768 if (dai->driver && dai->driver->ops->set_channel_map)
2769 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2774 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2777 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2779 * @tristate: tristate enable
2781 * Tristates the DAI so that others can use it.
2783 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2785 if (dai->driver && dai->driver->ops->set_tristate)
2786 return dai->driver->ops->set_tristate(dai, tristate);
2790 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2793 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2795 * @mute: mute enable
2796 * @direction: stream to mute
2798 * Mutes the DAI DAC.
2800 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute,
2806 if (dai->driver->ops->mute_stream)
2807 return dai->driver->ops->mute_stream(dai, mute, direction);
2808 else if (direction == SNDRV_PCM_STREAM_PLAYBACK &&
2809 dai->driver->ops->digital_mute)
2810 return dai->driver->ops->digital_mute(dai, mute);
2814 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2817 * snd_soc_register_card - Register a card with the ASoC core
2819 * @card: Card to register
2822 int snd_soc_register_card(struct snd_soc_card *card)
2825 struct snd_soc_pcm_runtime *rtd;
2827 if (!card->name || !card->dev)
2830 for (i = 0; i < card->num_links; i++) {
2831 struct snd_soc_dai_link *link = &card->dai_link[i];
2833 ret = soc_init_dai_link(card, link);
2835 dev_err(card->dev, "ASoC: failed to init link %s\n",
2841 dev_set_drvdata(card->dev, card);
2843 snd_soc_initialize_card_lists(card);
2845 INIT_LIST_HEAD(&card->dai_link_list);
2846 card->num_dai_links = 0;
2848 INIT_LIST_HEAD(&card->rtd_list);
2851 INIT_LIST_HEAD(&card->dapm_dirty);
2852 INIT_LIST_HEAD(&card->dobj_list);
2853 card->instantiated = 0;
2854 mutex_init(&card->mutex);
2855 mutex_init(&card->dapm_mutex);
2857 ret = snd_soc_instantiate_card(card);
2861 /* deactivate pins to sleep state */
2862 list_for_each_entry(rtd, &card->rtd_list, list) {
2863 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2866 for (j = 0; j < rtd->num_codecs; j++) {
2867 struct snd_soc_dai *codec_dai = rtd->codec_dais[j];
2868 if (!codec_dai->active)
2869 pinctrl_pm_select_sleep_state(codec_dai->dev);
2872 if (!cpu_dai->active)
2873 pinctrl_pm_select_sleep_state(cpu_dai->dev);
2878 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2881 * snd_soc_unregister_card - Unregister a card with the ASoC core
2883 * @card: Card to unregister
2886 int snd_soc_unregister_card(struct snd_soc_card *card)
2888 if (card->instantiated) {
2889 card->instantiated = false;
2890 snd_soc_dapm_shutdown(card);
2891 soc_cleanup_card_resources(card);
2892 dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
2897 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2900 * Simplify DAI link configuration by removing ".-1" from device names
2901 * and sanitizing names.
2903 static char *fmt_single_name(struct device *dev, int *id)
2905 char *found, name[NAME_SIZE];
2908 if (dev_name(dev) == NULL)
2911 strlcpy(name, dev_name(dev), NAME_SIZE);
2913 /* are we a "%s.%d" name (platform and SPI components) */
2914 found = strstr(name, dev->driver->name);
2917 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2919 /* discard ID from name if ID == -1 */
2921 found[strlen(dev->driver->name)] = '\0';
2925 /* I2C component devices are named "bus-addr" */
2926 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2927 char tmp[NAME_SIZE];
2929 /* create unique ID number from I2C addr and bus */
2930 *id = ((id1 & 0xffff) << 16) + id2;
2932 /* sanitize component name for DAI link creation */
2933 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
2934 strlcpy(name, tmp, NAME_SIZE);
2939 return kstrdup(name, GFP_KERNEL);
2943 * Simplify DAI link naming for single devices with multiple DAIs by removing
2944 * any ".-1" and using the DAI name (instead of device name).
2946 static inline char *fmt_multiple_name(struct device *dev,
2947 struct snd_soc_dai_driver *dai_drv)
2949 if (dai_drv->name == NULL) {
2951 "ASoC: error - multiple DAI %s registered with no name\n",
2956 return kstrdup(dai_drv->name, GFP_KERNEL);
2960 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2962 * @component: The component for which the DAIs should be unregistered
2964 static void snd_soc_unregister_dais(struct snd_soc_component *component)
2966 struct snd_soc_dai *dai, *_dai;
2968 list_for_each_entry_safe(dai, _dai, &component->dai_list, list) {
2969 dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
2971 list_del(&dai->list);
2977 /* Create a DAI and add it to the component's DAI list */
2978 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
2979 struct snd_soc_dai_driver *dai_drv,
2980 bool legacy_dai_naming)
2982 struct device *dev = component->dev;
2983 struct snd_soc_dai *dai;
2985 dev_dbg(dev, "ASoC: dynamically register DAI %s\n", dev_name(dev));
2987 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2992 * Back in the old days when we still had component-less DAIs,
2993 * instead of having a static name, component-less DAIs would
2994 * inherit the name of the parent device so it is possible to
2995 * register multiple instances of the DAI. We still need to keep
2996 * the same naming style even though those DAIs are not
2997 * component-less anymore.
2999 if (legacy_dai_naming &&
3000 (dai_drv->id == 0 || dai_drv->name == NULL)) {
3001 dai->name = fmt_single_name(dev, &dai->id);
3003 dai->name = fmt_multiple_name(dev, dai_drv);
3005 dai->id = dai_drv->id;
3007 dai->id = component->num_dai;
3009 if (dai->name == NULL) {
3014 dai->component = component;
3016 dai->driver = dai_drv;
3017 if (!dai->driver->ops)
3018 dai->driver->ops = &null_dai_ops;
3020 list_add(&dai->list, &component->dai_list);
3021 component->num_dai++;
3023 dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name);
3028 * snd_soc_register_dais - Register a DAI with the ASoC core
3030 * @component: The component the DAIs are registered for
3031 * @dai_drv: DAI driver to use for the DAIs
3032 * @count: Number of DAIs
3033 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3036 static int snd_soc_register_dais(struct snd_soc_component *component,
3037 struct snd_soc_dai_driver *dai_drv, size_t count,
3038 bool legacy_dai_naming)
3040 struct device *dev = component->dev;
3041 struct snd_soc_dai *dai;
3045 dev_dbg(dev, "ASoC: dai register %s #%zu\n", dev_name(dev), count);
3047 component->dai_drv = dai_drv;
3049 for (i = 0; i < count; i++) {
3051 dai = soc_add_dai(component, dai_drv + i,
3052 count == 1 && legacy_dai_naming);
3062 snd_soc_unregister_dais(component);
3068 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3070 * @component: The component the DAIs are registered for
3071 * @dai_drv: DAI driver to use for the DAI
3073 * Topology can use this API to register DAIs when probing a component.
3074 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3075 * will be freed in the component cleanup.
3077 int snd_soc_register_dai(struct snd_soc_component *component,
3078 struct snd_soc_dai_driver *dai_drv)
3080 struct snd_soc_dapm_context *dapm =
3081 snd_soc_component_get_dapm(component);
3082 struct snd_soc_dai *dai;
3085 if (dai_drv->dobj.type != SND_SOC_DOBJ_PCM) {
3086 dev_err(component->dev, "Invalid dai type %d\n",
3087 dai_drv->dobj.type);
3091 lockdep_assert_held(&client_mutex);
3092 dai = soc_add_dai(component, dai_drv, false);
3096 /* Create the DAI widgets here. After adding DAIs, topology may
3097 * also add routes that need these widgets as source or sink.
3099 ret = snd_soc_dapm_new_dai_widgets(dapm, dai);
3101 dev_err(component->dev,
3102 "Failed to create DAI widgets %d\n", ret);
3107 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3109 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm,
3110 enum snd_soc_dapm_type type, int subseq)
3112 struct snd_soc_component *component = dapm->component;
3114 component->driver->seq_notifier(component, type, subseq);
3117 static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm,
3120 struct snd_soc_component *component = dapm->component;
3122 return component->driver->stream_event(component, event);
3125 static int snd_soc_component_initialize(struct snd_soc_component *component,
3126 const struct snd_soc_component_driver *driver, struct device *dev)
3128 struct snd_soc_dapm_context *dapm;
3130 component->name = fmt_single_name(dev, &component->id);
3131 if (!component->name) {
3132 dev_err(dev, "ASoC: Failed to allocate name\n");
3136 component->dev = dev;
3137 component->driver = driver;
3138 component->probe = component->driver->probe;
3139 component->remove = component->driver->remove;
3140 component->suspend = component->driver->suspend;
3141 component->resume = component->driver->resume;
3142 component->pcm_new = component->driver->pcm_new;
3143 component->pcm_free = component->driver->pcm_free;
3145 dapm = &component->dapm;
3147 dapm->component = component;
3148 dapm->bias_level = SND_SOC_BIAS_OFF;
3149 dapm->idle_bias_off = true;
3150 if (driver->seq_notifier)
3151 dapm->seq_notifier = snd_soc_component_seq_notifier;
3152 if (driver->stream_event)
3153 dapm->stream_event = snd_soc_component_stream_event;
3155 component->controls = driver->controls;
3156 component->num_controls = driver->num_controls;
3157 component->dapm_widgets = driver->dapm_widgets;
3158 component->num_dapm_widgets = driver->num_dapm_widgets;
3159 component->dapm_routes = driver->dapm_routes;
3160 component->num_dapm_routes = driver->num_dapm_routes;
3162 INIT_LIST_HEAD(&component->dai_list);
3163 mutex_init(&component->io_mutex);
3168 static void snd_soc_component_setup_regmap(struct snd_soc_component *component)
3170 int val_bytes = regmap_get_val_bytes(component->regmap);
3172 /* Errors are legitimate for non-integer byte multiples */
3174 component->val_bytes = val_bytes;
3177 #ifdef CONFIG_REGMAP
3180 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3181 * @component: The component for which to initialize the regmap instance
3182 * @regmap: The regmap instance that should be used by the component
3184 * This function allows deferred assignment of the regmap instance that is
3185 * associated with the component. Only use this if the regmap instance is not
3186 * yet ready when the component is registered. The function must also be called
3187 * before the first IO attempt of the component.
3189 void snd_soc_component_init_regmap(struct snd_soc_component *component,
3190 struct regmap *regmap)
3192 component->regmap = regmap;
3193 snd_soc_component_setup_regmap(component);
3195 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
3198 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3199 * @component: The component for which to de-initialize the regmap instance
3201 * Calls regmap_exit() on the regmap instance associated to the component and
3202 * removes the regmap instance from the component.
3204 * This function should only be used if snd_soc_component_init_regmap() was used
3205 * to initialize the regmap instance.
3207 void snd_soc_component_exit_regmap(struct snd_soc_component *component)
3209 regmap_exit(component->regmap);
3210 component->regmap = NULL;
3212 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
3216 static void snd_soc_component_add_unlocked(struct snd_soc_component *component)
3218 if (!component->write && !component->read) {
3219 if (!component->regmap)
3220 component->regmap = dev_get_regmap(component->dev, NULL);
3221 if (component->regmap)
3222 snd_soc_component_setup_regmap(component);
3225 list_add(&component->list, &component_list);
3226 INIT_LIST_HEAD(&component->dobj_list);
3229 static void snd_soc_component_add(struct snd_soc_component *component)
3231 mutex_lock(&client_mutex);
3232 snd_soc_component_add_unlocked(component);
3233 mutex_unlock(&client_mutex);
3236 static void snd_soc_component_cleanup(struct snd_soc_component *component)
3238 snd_soc_unregister_dais(component);
3239 kfree(component->name);
3242 static void snd_soc_component_del_unlocked(struct snd_soc_component *component)
3244 struct snd_soc_card *card = component->card;
3247 snd_soc_unregister_card(card);
3249 list_del(&component->list);
3252 int snd_soc_register_component(struct device *dev,
3253 const struct snd_soc_component_driver *cmpnt_drv,
3254 struct snd_soc_dai_driver *dai_drv,
3257 struct snd_soc_component *cmpnt;
3260 cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL);
3262 dev_err(dev, "ASoC: Failed to allocate memory\n");
3266 ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev);
3270 cmpnt->ignore_pmdown_time = true;
3271 cmpnt->registered_as_component = true;
3273 ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true);
3275 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3279 snd_soc_component_add(cmpnt);
3284 snd_soc_component_cleanup(cmpnt);
3289 EXPORT_SYMBOL_GPL(snd_soc_register_component);
3292 * snd_soc_unregister_component - Unregister a component from the ASoC core
3294 * @dev: The device to unregister
3296 void snd_soc_unregister_component(struct device *dev)
3298 struct snd_soc_component *cmpnt;
3300 mutex_lock(&client_mutex);
3301 list_for_each_entry(cmpnt, &component_list, list) {
3302 if (dev == cmpnt->dev && cmpnt->registered_as_component)
3305 mutex_unlock(&client_mutex);
3309 snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL);
3310 snd_soc_component_del_unlocked(cmpnt);
3311 mutex_unlock(&client_mutex);
3312 snd_soc_component_cleanup(cmpnt);
3315 EXPORT_SYMBOL_GPL(snd_soc_unregister_component);
3317 static int snd_soc_platform_drv_probe(struct snd_soc_component *component)
3319 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3321 return platform->driver->probe(platform);
3324 static void snd_soc_platform_drv_remove(struct snd_soc_component *component)
3326 struct snd_soc_platform *platform = snd_soc_component_to_platform(component);
3328 platform->driver->remove(platform);
3331 static int snd_soc_platform_drv_pcm_new(struct snd_soc_pcm_runtime *rtd)
3333 struct snd_soc_platform *platform = rtd->platform;
3335 if (platform->driver->pcm_new)
3336 return platform->driver->pcm_new(rtd);
3341 static void snd_soc_platform_drv_pcm_free(struct snd_pcm *pcm)
3343 struct snd_soc_pcm_runtime *rtd = pcm->private_data;
3344 struct snd_soc_platform *platform = rtd->platform;
3346 if (platform->driver->pcm_free)
3347 platform->driver->pcm_free(pcm);
3351 * snd_soc_add_platform - Add a platform to the ASoC core
3352 * @dev: The parent device for the platform
3353 * @platform: The platform to add
3354 * @platform_drv: The driver for the platform
3356 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
3357 const struct snd_soc_platform_driver *platform_drv)
3361 ret = snd_soc_component_initialize(&platform->component,
3362 &platform_drv->component_driver, dev);
3366 platform->dev = dev;
3367 platform->driver = platform_drv;
3369 if (platform_drv->probe)
3370 platform->component.probe = snd_soc_platform_drv_probe;
3371 if (platform_drv->remove)
3372 platform->component.remove = snd_soc_platform_drv_remove;
3373 if (platform_drv->pcm_new)
3374 platform->component.pcm_new = snd_soc_platform_drv_pcm_new;
3375 if (platform_drv->pcm_free)
3376 platform->component.pcm_free = snd_soc_platform_drv_pcm_free;
3378 #ifdef CONFIG_DEBUG_FS
3379 platform->component.debugfs_prefix = "platform";
3382 mutex_lock(&client_mutex);
3383 snd_soc_component_add_unlocked(&platform->component);
3384 list_add(&platform->list, &platform_list);
3385 mutex_unlock(&client_mutex);
3387 dev_dbg(dev, "ASoC: Registered platform '%s'\n",
3388 platform->component.name);
3392 EXPORT_SYMBOL_GPL(snd_soc_add_platform);
3395 * snd_soc_register_platform - Register a platform with the ASoC core
3397 * @dev: The device for the platform
3398 * @platform_drv: The driver for the platform
3400 int snd_soc_register_platform(struct device *dev,
3401 const struct snd_soc_platform_driver *platform_drv)
3403 struct snd_soc_platform *platform;
3406 dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev));
3408 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3409 if (platform == NULL)
3412 ret = snd_soc_add_platform(dev, platform, platform_drv);
3418 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3421 * snd_soc_remove_platform - Remove a platform from the ASoC core
3422 * @platform: the platform to remove
3424 void snd_soc_remove_platform(struct snd_soc_platform *platform)
3427 mutex_lock(&client_mutex);
3428 list_del(&platform->list);
3429 snd_soc_component_del_unlocked(&platform->component);
3430 mutex_unlock(&client_mutex);
3432 dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n",
3433 platform->component.name);
3435 snd_soc_component_cleanup(&platform->component);
3437 EXPORT_SYMBOL_GPL(snd_soc_remove_platform);
3439 struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev)
3441 struct snd_soc_platform *platform;
3443 mutex_lock(&client_mutex);
3444 list_for_each_entry(platform, &platform_list, list) {
3445 if (dev == platform->dev) {
3446 mutex_unlock(&client_mutex);
3450 mutex_unlock(&client_mutex);
3454 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform);
3457 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3459 * @dev: platform to unregister
3461 void snd_soc_unregister_platform(struct device *dev)
3463 struct snd_soc_platform *platform;
3465 platform = snd_soc_lookup_platform(dev);
3469 snd_soc_remove_platform(platform);
3472 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3474 static u64 codec_format_map[] = {
3475 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3476 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3477 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3478 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3479 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3480 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3481 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3482 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3483 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3484 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3485 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3486 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3487 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3488 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3489 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3490 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3493 /* Fix up the DAI formats for endianness: codecs don't actually see
3494 * the endianness of the data but we're using the CPU format
3495 * definitions which do need to include endianness so we ensure that
3496 * codec DAIs always have both big and little endian variants set.
3498 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3502 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3503 if (stream->formats & codec_format_map[i])
3504 stream->formats |= codec_format_map[i];
3507 static int snd_soc_codec_drv_probe(struct snd_soc_component *component)
3509 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3511 return codec->driver->probe(codec);
3514 static void snd_soc_codec_drv_remove(struct snd_soc_component *component)
3516 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3518 codec->driver->remove(codec);
3521 static int snd_soc_codec_drv_suspend(struct snd_soc_component *component)
3523 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3525 return codec->driver->suspend(codec);
3528 static int snd_soc_codec_drv_resume(struct snd_soc_component *component)
3530 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3532 return codec->driver->resume(codec);
3535 static int snd_soc_codec_drv_write(struct snd_soc_component *component,
3536 unsigned int reg, unsigned int val)
3538 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3540 return codec->driver->write(codec, reg, val);
3543 static int snd_soc_codec_drv_read(struct snd_soc_component *component,
3544 unsigned int reg, unsigned int *val)
3546 struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
3548 *val = codec->driver->read(codec, reg);
3553 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm,
3554 enum snd_soc_bias_level level)
3556 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
3558 return codec->driver->set_bias_level(codec, level);
3562 * snd_soc_register_codec - Register a codec with the ASoC core
3564 * @dev: The parent device for this codec
3565 * @codec_drv: Codec driver
3566 * @dai_drv: The associated DAI driver
3567 * @num_dai: Number of DAIs
3569 int snd_soc_register_codec(struct device *dev,
3570 const struct snd_soc_codec_driver *codec_drv,
3571 struct snd_soc_dai_driver *dai_drv,
3574 struct snd_soc_dapm_context *dapm;
3575 struct snd_soc_codec *codec;
3576 struct snd_soc_dai *dai;
3579 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3581 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3585 codec->component.codec = codec;
3587 ret = snd_soc_component_initialize(&codec->component,
3588 &codec_drv->component_driver, dev);
3592 if (codec_drv->probe)
3593 codec->component.probe = snd_soc_codec_drv_probe;
3594 if (codec_drv->remove)
3595 codec->component.remove = snd_soc_codec_drv_remove;
3596 if (codec_drv->suspend)
3597 codec->component.suspend = snd_soc_codec_drv_suspend;
3598 if (codec_drv->resume)
3599 codec->component.resume = snd_soc_codec_drv_resume;
3600 if (codec_drv->write)
3601 codec->component.write = snd_soc_codec_drv_write;
3602 if (codec_drv->read)
3603 codec->component.read = snd_soc_codec_drv_read;
3604 codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3606 dapm = snd_soc_codec_get_dapm(codec);
3607 dapm->idle_bias_off = codec_drv->idle_bias_off;
3608 dapm->suspend_bias_off = codec_drv->suspend_bias_off;
3609 if (codec_drv->seq_notifier)
3610 dapm->seq_notifier = codec_drv->seq_notifier;
3611 if (codec_drv->set_bias_level)
3612 dapm->set_bias_level = snd_soc_codec_set_bias_level;
3614 codec->driver = codec_drv;
3615 codec->component.val_bytes = codec_drv->reg_word_size;
3617 #ifdef CONFIG_DEBUG_FS
3618 codec->component.init_debugfs = soc_init_codec_debugfs;
3619 codec->component.debugfs_prefix = "codec";
3622 if (codec_drv->get_regmap)
3623 codec->component.regmap = codec_drv->get_regmap(dev);
3625 for (i = 0; i < num_dai; i++) {
3626 fixup_codec_formats(&dai_drv[i].playback);
3627 fixup_codec_formats(&dai_drv[i].capture);
3630 ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false);
3632 dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret);
3636 list_for_each_entry(dai, &codec->component.dai_list, list)
3639 mutex_lock(&client_mutex);
3640 snd_soc_component_add_unlocked(&codec->component);
3641 list_add(&codec->list, &codec_list);
3642 mutex_unlock(&client_mutex);
3644 dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n",
3645 codec->component.name);
3649 snd_soc_component_cleanup(&codec->component);
3654 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3657 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3659 * @dev: codec to unregister
3661 void snd_soc_unregister_codec(struct device *dev)
3663 struct snd_soc_codec *codec;
3665 mutex_lock(&client_mutex);
3666 list_for_each_entry(codec, &codec_list, list) {
3667 if (dev == codec->dev)
3670 mutex_unlock(&client_mutex);
3674 list_del(&codec->list);
3675 snd_soc_component_del_unlocked(&codec->component);
3676 mutex_unlock(&client_mutex);
3678 dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n",
3679 codec->component.name);
3681 snd_soc_component_cleanup(&codec->component);
3682 snd_soc_cache_exit(codec);
3685 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3687 /* Retrieve a card's name from device tree */
3688 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3689 const char *propname)
3691 struct device_node *np;
3695 pr_err("card->dev is not set before calling %s\n", __func__);
3699 np = card->dev->of_node;
3701 ret = of_property_read_string_index(np, propname, 0, &card->name);
3703 * EINVAL means the property does not exist. This is fine providing
3704 * card->name was previously set, which is checked later in
3705 * snd_soc_register_card.
3707 if (ret < 0 && ret != -EINVAL) {
3709 "ASoC: Property '%s' could not be read: %d\n",
3716 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3718 static const struct snd_soc_dapm_widget simple_widgets[] = {
3719 SND_SOC_DAPM_MIC("Microphone", NULL),
3720 SND_SOC_DAPM_LINE("Line", NULL),
3721 SND_SOC_DAPM_HP("Headphone", NULL),
3722 SND_SOC_DAPM_SPK("Speaker", NULL),
3725 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card,
3726 const char *propname)
3728 struct device_node *np = card->dev->of_node;
3729 struct snd_soc_dapm_widget *widgets;
3730 const char *template, *wname;
3731 int i, j, num_widgets, ret;
3733 num_widgets = of_property_count_strings(np, propname);
3734 if (num_widgets < 0) {
3736 "ASoC: Property '%s' does not exist\n", propname);
3739 if (num_widgets & 1) {
3741 "ASoC: Property '%s' length is not even\n", propname);
3747 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3752 widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets),
3756 "ASoC: Could not allocate memory for widgets\n");
3760 for (i = 0; i < num_widgets; i++) {
3761 ret = of_property_read_string_index(np, propname,
3765 "ASoC: Property '%s' index %d read error:%d\n",
3766 propname, 2 * i, ret);
3770 for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) {
3771 if (!strncmp(template, simple_widgets[j].name,
3772 strlen(simple_widgets[j].name))) {
3773 widgets[i] = simple_widgets[j];
3778 if (j >= ARRAY_SIZE(simple_widgets)) {
3780 "ASoC: DAPM widget '%s' is not supported\n",
3785 ret = of_property_read_string_index(np, propname,
3790 "ASoC: Property '%s' index %d read error:%d\n",
3791 propname, (2 * i) + 1, ret);
3795 widgets[i].name = wname;
3798 card->of_dapm_widgets = widgets;
3799 card->num_of_dapm_widgets = num_widgets;
3803 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets);
3805 static int snd_soc_of_get_slot_mask(struct device_node *np,
3806 const char *prop_name,
3810 const __be32 *of_slot_mask = of_get_property(np, prop_name, &val);
3816 for (i = 0; i < val; i++)
3817 if (be32_to_cpup(&of_slot_mask[i]))
3823 int snd_soc_of_parse_tdm_slot(struct device_node *np,
3824 unsigned int *tx_mask,
3825 unsigned int *rx_mask,
3826 unsigned int *slots,
3827 unsigned int *slot_width)
3833 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask", tx_mask);
3835 snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask", rx_mask);
3837 if (of_property_read_bool(np, "dai-tdm-slot-num")) {
3838 ret = of_property_read_u32(np, "dai-tdm-slot-num", &val);
3846 if (of_property_read_bool(np, "dai-tdm-slot-width")) {
3847 ret = of_property_read_u32(np, "dai-tdm-slot-width", &val);
3857 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot);
3859 void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card,
3860 struct snd_soc_codec_conf *codec_conf,
3861 struct device_node *of_node,
3862 const char *propname)
3864 struct device_node *np = card->dev->of_node;
3868 ret = of_property_read_string(np, propname, &str);
3870 /* no prefix is not error */
3874 codec_conf->of_node = of_node;
3875 codec_conf->name_prefix = str;
3877 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix);
3879 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3880 const char *propname)
3882 struct device_node *np = card->dev->of_node;
3884 struct snd_soc_dapm_route *routes;
3887 num_routes = of_property_count_strings(np, propname);
3888 if (num_routes < 0 || num_routes & 1) {
3890 "ASoC: Property '%s' does not exist or its length is not even\n",
3896 dev_err(card->dev, "ASoC: Property '%s's length is zero\n",
3901 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3905 "ASoC: Could not allocate DAPM route table\n");
3909 for (i = 0; i < num_routes; i++) {
3910 ret = of_property_read_string_index(np, propname,
3911 2 * i, &routes[i].sink);
3914 "ASoC: Property '%s' index %d could not be read: %d\n",
3915 propname, 2 * i, ret);
3918 ret = of_property_read_string_index(np, propname,
3919 (2 * i) + 1, &routes[i].source);
3922 "ASoC: Property '%s' index %d could not be read: %d\n",
3923 propname, (2 * i) + 1, ret);
3928 card->num_of_dapm_routes = num_routes;
3929 card->of_dapm_routes = routes;
3933 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3935 unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
3937 struct device_node **bitclkmaster,
3938 struct device_node **framemaster)
3942 unsigned int format = 0;
3948 } of_fmt_table[] = {
3949 { "i2s", SND_SOC_DAIFMT_I2S },
3950 { "right_j", SND_SOC_DAIFMT_RIGHT_J },
3951 { "left_j", SND_SOC_DAIFMT_LEFT_J },
3952 { "dsp_a", SND_SOC_DAIFMT_DSP_A },
3953 { "dsp_b", SND_SOC_DAIFMT_DSP_B },
3954 { "ac97", SND_SOC_DAIFMT_AC97 },
3955 { "pdm", SND_SOC_DAIFMT_PDM},
3956 { "msb", SND_SOC_DAIFMT_MSB },
3957 { "lsb", SND_SOC_DAIFMT_LSB },
3964 * check "[prefix]format = xxx"
3965 * SND_SOC_DAIFMT_FORMAT_MASK area
3967 snprintf(prop, sizeof(prop), "%sformat", prefix);
3968 ret = of_property_read_string(np, prop, &str);
3970 for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) {
3971 if (strcmp(str, of_fmt_table[i].name) == 0) {
3972 format |= of_fmt_table[i].val;
3979 * check "[prefix]continuous-clock"
3980 * SND_SOC_DAIFMT_CLOCK_MASK area
3982 snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix);
3983 if (of_property_read_bool(np, prop))
3984 format |= SND_SOC_DAIFMT_CONT;
3986 format |= SND_SOC_DAIFMT_GATED;
3989 * check "[prefix]bitclock-inversion"
3990 * check "[prefix]frame-inversion"
3991 * SND_SOC_DAIFMT_INV_MASK area
3993 snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix);
3994 bit = !!of_get_property(np, prop, NULL);
3996 snprintf(prop, sizeof(prop), "%sframe-inversion", prefix);
3997 frame = !!of_get_property(np, prop, NULL);
3999 switch ((bit << 4) + frame) {
4001 format |= SND_SOC_DAIFMT_IB_IF;
4004 format |= SND_SOC_DAIFMT_IB_NF;
4007 format |= SND_SOC_DAIFMT_NB_IF;
4010 /* SND_SOC_DAIFMT_NB_NF is default */
4015 * check "[prefix]bitclock-master"
4016 * check "[prefix]frame-master"
4017 * SND_SOC_DAIFMT_MASTER_MASK area
4019 snprintf(prop, sizeof(prop), "%sbitclock-master", prefix);
4020 bit = !!of_get_property(np, prop, NULL);
4021 if (bit && bitclkmaster)
4022 *bitclkmaster = of_parse_phandle(np, prop, 0);
4024 snprintf(prop, sizeof(prop), "%sframe-master", prefix);
4025 frame = !!of_get_property(np, prop, NULL);
4026 if (frame && framemaster)
4027 *framemaster = of_parse_phandle(np, prop, 0);
4029 switch ((bit << 4) + frame) {
4031 format |= SND_SOC_DAIFMT_CBM_CFM;
4034 format |= SND_SOC_DAIFMT_CBM_CFS;
4037 format |= SND_SOC_DAIFMT_CBS_CFM;
4040 format |= SND_SOC_DAIFMT_CBS_CFS;
4046 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt);
4048 int snd_soc_get_dai_name(struct of_phandle_args *args,
4049 const char **dai_name)
4051 struct snd_soc_component *pos;
4052 struct device_node *component_of_node;
4053 int ret = -EPROBE_DEFER;
4055 mutex_lock(&client_mutex);
4056 list_for_each_entry(pos, &component_list, list) {
4057 component_of_node = pos->dev->of_node;
4058 if (!component_of_node && pos->dev->parent)
4059 component_of_node = pos->dev->parent->of_node;
4061 if (component_of_node != args->np)
4064 if (pos->driver->of_xlate_dai_name) {
4065 ret = pos->driver->of_xlate_dai_name(pos,
4071 switch (args->args_count) {
4073 id = 0; /* same as dai_drv[0] */
4083 if (id < 0 || id >= pos->num_dai) {
4090 *dai_name = pos->dai_drv[id].name;
4092 *dai_name = pos->name;
4097 mutex_unlock(&client_mutex);
4100 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name);
4102 int snd_soc_of_get_dai_name(struct device_node *of_node,
4103 const char **dai_name)
4105 struct of_phandle_args args;
4108 ret = of_parse_phandle_with_args(of_node, "sound-dai",
4109 "#sound-dai-cells", 0, &args);
4113 ret = snd_soc_get_dai_name(&args, dai_name);
4115 of_node_put(args.np);
4119 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name);
4122 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4124 * @of_node: Device node
4125 * @dai_link: DAI link
4127 * Builds an array of CODEC DAI components from the DAI link property
4129 * The array is set in the DAI link and the number of DAIs is set accordingly.
4130 * The device nodes in the array (of_node) must be dereferenced by the caller.
4132 * Returns 0 for success
4134 int snd_soc_of_get_dai_link_codecs(struct device *dev,
4135 struct device_node *of_node,
4136 struct snd_soc_dai_link *dai_link)
4138 struct of_phandle_args args;
4139 struct snd_soc_dai_link_component *component;
4141 int index, num_codecs, ret;
4143 /* Count the number of CODECs */
4145 num_codecs = of_count_phandle_with_args(of_node, name,
4146 "#sound-dai-cells");
4147 if (num_codecs <= 0) {
4148 if (num_codecs == -ENOENT)
4149 dev_err(dev, "No 'sound-dai' property\n");
4151 dev_err(dev, "Bad phandle in 'sound-dai'\n");
4154 component = devm_kzalloc(dev,
4155 sizeof *component * num_codecs,
4159 dai_link->codecs = component;
4160 dai_link->num_codecs = num_codecs;
4162 /* Parse the list */
4163 for (index = 0, component = dai_link->codecs;
4164 index < dai_link->num_codecs;
4165 index++, component++) {
4166 ret = of_parse_phandle_with_args(of_node, name,
4171 component->of_node = args.np;
4172 ret = snd_soc_get_dai_name(&args, &component->dai_name);
4178 for (index = 0, component = dai_link->codecs;
4179 index < dai_link->num_codecs;
4180 index++, component++) {
4181 if (!component->of_node)
4183 of_node_put(component->of_node);
4184 component->of_node = NULL;
4186 dai_link->codecs = NULL;
4187 dai_link->num_codecs = 0;
4190 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs);
4192 static int __init snd_soc_init(void)
4194 snd_soc_debugfs_init();
4195 snd_soc_util_init();
4197 return platform_driver_register(&soc_driver);
4199 module_init(snd_soc_init);
4201 static void __exit snd_soc_exit(void)
4203 snd_soc_util_exit();
4204 snd_soc_debugfs_exit();
4206 platform_driver_unregister(&soc_driver);
4208 module_exit(snd_soc_exit);
4210 /* Module information */
4211 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4212 MODULE_DESCRIPTION("ALSA SoC Core");
4213 MODULE_LICENSE("GPL");
4214 MODULE_ALIAS("platform:soc-audio");