1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-core.c -- ALSA SoC Audio Layer
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Copyright 2005 Openedhand Ltd.
7 // Copyright (C) 2010 Slimlogic Ltd.
8 // Copyright (C) 2010 Texas Instruments Inc.
10 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
11 // with code, comments and ideas from :-
12 // Richard Purdie <richard@openedhand.com>
15 // o Add hw rules to enforce rates, etc.
16 // o More testing with other codecs/machines.
17 // o Add more codecs and platforms to ensure good API coverage.
18 // o Support TDM on PCM and I2S
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
25 #include <linux/bitops.h>
26 #include <linux/debugfs.h>
27 #include <linux/platform_device.h>
28 #include <linux/pinctrl/consumer.h>
29 #include <linux/ctype.h>
30 #include <linux/slab.h>
32 #include <linux/of_graph.h>
33 #include <linux/dmi.h>
34 #include <linux/acpi.h>
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/soc.h>
39 #include <sound/soc-dpcm.h>
40 #include <sound/soc-topology.h>
41 #include <sound/soc-link.h>
42 #include <sound/initval.h>
44 #define CREATE_TRACE_POINTS
45 #include <trace/events/asoc.h>
47 static DEFINE_MUTEX(client_mutex
);
48 static LIST_HEAD(component_list
);
49 static LIST_HEAD(unbind_card_list
);
51 #define for_each_component(component) \
52 list_for_each_entry(component, &component_list, list)
55 * This is used if driver don't need to have CPU/Codec/Platform
58 struct snd_soc_dai_link_component null_dailink_component
[0];
59 EXPORT_SYMBOL_GPL(null_dailink_component
);
62 * This is a timeout to do a DAPM powerdown after a stream is closed().
63 * It can be used to eliminate pops between different playback streams, e.g.
64 * between two audio tracks.
66 static int pmdown_time
= 5000;
67 module_param(pmdown_time
, int, 0);
68 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
70 static ssize_t
pmdown_time_show(struct device
*dev
,
71 struct device_attribute
*attr
, char *buf
)
73 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
75 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
78 static ssize_t
pmdown_time_store(struct device
*dev
,
79 struct device_attribute
*attr
,
80 const char *buf
, size_t count
)
82 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
85 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
92 static DEVICE_ATTR_RW(pmdown_time
);
94 static struct attribute
*soc_dev_attrs
[] = {
95 &dev_attr_pmdown_time
.attr
,
99 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
100 struct attribute
*attr
, int idx
)
102 struct device
*dev
= kobj_to_dev(kobj
);
103 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
108 if (attr
== &dev_attr_pmdown_time
.attr
)
109 return attr
->mode
; /* always visible */
110 return rtd
->num_codecs
? attr
->mode
: 0; /* enabled only with codec */
113 static const struct attribute_group soc_dapm_dev_group
= {
114 .attrs
= soc_dapm_dev_attrs
,
115 .is_visible
= soc_dev_attr_is_visible
,
118 static const struct attribute_group soc_dev_group
= {
119 .attrs
= soc_dev_attrs
,
120 .is_visible
= soc_dev_attr_is_visible
,
123 static const struct attribute_group
*soc_dev_attr_groups
[] = {
129 #ifdef CONFIG_DEBUG_FS
130 struct dentry
*snd_soc_debugfs_root
;
131 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
133 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
135 if (!component
->card
->debugfs_card_root
)
138 if (component
->debugfs_prefix
) {
141 name
= kasprintf(GFP_KERNEL
, "%s:%s",
142 component
->debugfs_prefix
, component
->name
);
144 component
->debugfs_root
= debugfs_create_dir(name
,
145 component
->card
->debugfs_card_root
);
149 component
->debugfs_root
= debugfs_create_dir(component
->name
,
150 component
->card
->debugfs_card_root
);
153 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
154 component
->debugfs_root
);
157 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
159 if (!component
->debugfs_root
)
161 debugfs_remove_recursive(component
->debugfs_root
);
162 component
->debugfs_root
= NULL
;
165 static int dai_list_show(struct seq_file
*m
, void *v
)
167 struct snd_soc_component
*component
;
168 struct snd_soc_dai
*dai
;
170 mutex_lock(&client_mutex
);
172 for_each_component(component
)
173 for_each_component_dais(component
, dai
)
174 seq_printf(m
, "%s\n", dai
->name
);
176 mutex_unlock(&client_mutex
);
180 DEFINE_SHOW_ATTRIBUTE(dai_list
);
182 static int component_list_show(struct seq_file
*m
, void *v
)
184 struct snd_soc_component
*component
;
186 mutex_lock(&client_mutex
);
188 for_each_component(component
)
189 seq_printf(m
, "%s\n", component
->name
);
191 mutex_unlock(&client_mutex
);
195 DEFINE_SHOW_ATTRIBUTE(component_list
);
197 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
199 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
200 snd_soc_debugfs_root
);
202 debugfs_create_u32("dapm_pop_time", 0644, card
->debugfs_card_root
,
205 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
208 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
210 debugfs_remove_recursive(card
->debugfs_card_root
);
211 card
->debugfs_card_root
= NULL
;
214 static void snd_soc_debugfs_init(void)
216 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
218 debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
221 debugfs_create_file("components", 0444, snd_soc_debugfs_root
, NULL
,
222 &component_list_fops
);
225 static void snd_soc_debugfs_exit(void)
227 debugfs_remove_recursive(snd_soc_debugfs_root
);
232 static inline void soc_init_component_debugfs(
233 struct snd_soc_component
*component
)
237 static inline void soc_cleanup_component_debugfs(
238 struct snd_soc_component
*component
)
242 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
246 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
250 static inline void snd_soc_debugfs_init(void)
254 static inline void snd_soc_debugfs_exit(void)
260 static int snd_soc_rtd_add_component(struct snd_soc_pcm_runtime
*rtd
,
261 struct snd_soc_component
*component
)
263 struct snd_soc_component
*comp
;
266 for_each_rtd_components(rtd
, i
, comp
) {
267 /* already connected */
268 if (comp
== component
)
272 /* see for_each_rtd_components */
273 rtd
->components
[rtd
->num_components
] = component
;
274 rtd
->num_components
++;
279 struct snd_soc_component
*snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime
*rtd
,
280 const char *driver_name
)
282 struct snd_soc_component
*component
;
291 * snd_soc_rtdcom_lookup() will find component from rtd by using
292 * specified driver name.
293 * But, if many components which have same driver name are connected
294 * to 1 rtd, this function will return 1st found component.
296 for_each_rtd_components(rtd
, i
, component
) {
297 const char *component_name
= component
->driver
->name
;
302 if ((component_name
== driver_name
) ||
303 strcmp(component_name
, driver_name
) == 0)
309 EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup
);
311 struct snd_soc_component
312 *snd_soc_lookup_component_nolocked(struct device
*dev
, const char *driver_name
)
314 struct snd_soc_component
*component
;
315 struct snd_soc_component
*found_component
;
317 found_component
= NULL
;
318 for_each_component(component
) {
319 if ((dev
== component
->dev
) &&
321 (driver_name
== component
->driver
->name
) ||
322 (strcmp(component
->driver
->name
, driver_name
) == 0))) {
323 found_component
= component
;
328 return found_component
;
330 EXPORT_SYMBOL_GPL(snd_soc_lookup_component_nolocked
);
332 struct snd_soc_component
*snd_soc_lookup_component(struct device
*dev
,
333 const char *driver_name
)
335 struct snd_soc_component
*component
;
337 mutex_lock(&client_mutex
);
338 component
= snd_soc_lookup_component_nolocked(dev
, driver_name
);
339 mutex_unlock(&client_mutex
);
343 EXPORT_SYMBOL_GPL(snd_soc_lookup_component
);
345 struct snd_soc_pcm_runtime
346 *snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
347 struct snd_soc_dai_link
*dai_link
)
349 struct snd_soc_pcm_runtime
*rtd
;
351 for_each_card_rtds(card
, rtd
) {
352 if (rtd
->dai_link
== dai_link
)
355 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
->name
);
358 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
361 * Power down the audio subsystem pmdown_time msecs after close is called.
362 * This is to ensure there are no pops or clicks in between any music tracks
363 * due to DAPM power cycling.
365 void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime
*rtd
)
367 struct snd_soc_dai
*codec_dai
= asoc_rtd_to_codec(rtd
, 0);
368 int playback
= SNDRV_PCM_STREAM_PLAYBACK
;
370 mutex_lock_nested(&rtd
->card
->pcm_mutex
, rtd
->card
->pcm_subclass
);
373 "ASoC: pop wq checking: %s status: %s waiting: %s\n",
374 codec_dai
->driver
->playback
.stream_name
,
375 snd_soc_dai_stream_active(codec_dai
, playback
) ?
376 "active" : "inactive",
377 rtd
->pop_wait
? "yes" : "no");
379 /* are we waiting on this codec DAI stream */
380 if (rtd
->pop_wait
== 1) {
382 snd_soc_dapm_stream_event(rtd
, playback
,
383 SND_SOC_DAPM_STREAM_STOP
);
386 mutex_unlock(&rtd
->card
->pcm_mutex
);
388 EXPORT_SYMBOL_GPL(snd_soc_close_delayed_work
);
390 static void soc_release_rtd_dev(struct device
*dev
)
392 /* "dev" means "rtd->dev" */
396 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime
*rtd
)
401 list_del(&rtd
->list
);
403 if (delayed_work_pending(&rtd
->delayed_work
))
404 flush_delayed_work(&rtd
->delayed_work
);
405 snd_soc_pcm_component_free(rtd
);
408 * we don't need to call kfree() for rtd->dev
410 * soc_release_rtd_dev()
412 * We don't need rtd->dev NULL check, because
413 * it is alloced *before* rtd.
415 * soc_new_pcm_runtime()
417 * We don't need to mind freeing for rtd,
418 * because it was created from dev (= rtd->dev)
420 * soc_new_pcm_runtime()
422 * rtd = devm_kzalloc(dev, ...);
425 device_unregister(rtd
->dev
);
428 static void close_delayed_work(struct work_struct
*work
) {
429 struct snd_soc_pcm_runtime
*rtd
=
430 container_of(work
, struct snd_soc_pcm_runtime
,
433 if (rtd
->close_delayed_work_func
)
434 rtd
->close_delayed_work_func(rtd
);
437 static struct snd_soc_pcm_runtime
*soc_new_pcm_runtime(
438 struct snd_soc_card
*card
, struct snd_soc_dai_link
*dai_link
)
440 struct snd_soc_pcm_runtime
*rtd
;
441 struct snd_soc_component
*component
;
449 dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
453 dev
->parent
= card
->dev
;
454 dev
->release
= soc_release_rtd_dev
;
456 dev_set_name(dev
, "%s", dai_link
->name
);
458 ret
= device_register(dev
);
460 put_device(dev
); /* soc_release_rtd_dev */
467 rtd
= devm_kzalloc(dev
,
469 sizeof(*component
) * (dai_link
->num_cpus
+
470 dai_link
->num_codecs
+
471 dai_link
->num_platforms
),
474 device_unregister(dev
);
479 INIT_LIST_HEAD(&rtd
->list
);
480 for_each_pcm_streams(stream
) {
481 INIT_LIST_HEAD(&rtd
->dpcm
[stream
].be_clients
);
482 INIT_LIST_HEAD(&rtd
->dpcm
[stream
].fe_clients
);
484 dev_set_drvdata(dev
, rtd
);
485 INIT_DELAYED_WORK(&rtd
->delayed_work
, close_delayed_work
);
490 rtd
->dais
= devm_kcalloc(dev
, dai_link
->num_cpus
+ dai_link
->num_codecs
,
491 sizeof(struct snd_soc_dai
*),
497 * dais = [][][][][][][][][][][][][][][][][][]
498 * ^cpu_dais ^codec_dais
499 * |--- num_cpus ---|--- num_codecs --|
502 * asoc_rtd_to_codec()
504 rtd
->num_cpus
= dai_link
->num_cpus
;
505 rtd
->num_codecs
= dai_link
->num_codecs
;
507 rtd
->dai_link
= dai_link
;
508 rtd
->num
= card
->num_rtd
++;
510 /* see for_each_card_rtds */
511 list_add_tail(&rtd
->list
, &card
->rtd_list
);
513 ret
= device_add_groups(dev
, soc_dev_attr_groups
);
520 soc_free_pcm_runtime(rtd
);
524 static void snd_soc_flush_all_delayed_work(struct snd_soc_card
*card
)
526 struct snd_soc_pcm_runtime
*rtd
;
528 for_each_card_rtds(card
, rtd
)
529 flush_delayed_work(&rtd
->delayed_work
);
532 #ifdef CONFIG_PM_SLEEP
533 static void soc_playback_digital_mute(struct snd_soc_card
*card
, int mute
)
535 struct snd_soc_pcm_runtime
*rtd
;
536 struct snd_soc_dai
*dai
;
537 int playback
= SNDRV_PCM_STREAM_PLAYBACK
;
540 for_each_card_rtds(card
, rtd
) {
542 if (rtd
->dai_link
->ignore_suspend
)
545 for_each_rtd_dais(rtd
, i
, dai
) {
546 if (snd_soc_dai_stream_active(dai
, playback
))
547 snd_soc_dai_digital_mute(dai
, mute
, playback
);
552 static void soc_dapm_suspend_resume(struct snd_soc_card
*card
, int event
)
554 struct snd_soc_pcm_runtime
*rtd
;
557 for_each_card_rtds(card
, rtd
) {
559 if (rtd
->dai_link
->ignore_suspend
)
562 for_each_pcm_streams(stream
)
563 snd_soc_dapm_stream_event(rtd
, stream
, event
);
567 /* powers down audio subsystem for suspend */
568 int snd_soc_suspend(struct device
*dev
)
570 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
571 struct snd_soc_component
*component
;
572 struct snd_soc_pcm_runtime
*rtd
;
575 /* If the card is not initialized yet there is nothing to do */
576 if (!card
->instantiated
)
580 * Due to the resume being scheduled into a workqueue we could
581 * suspend before that's finished - wait for it to complete.
583 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
585 /* we're going to block userspace touching us until resume completes */
586 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
588 /* mute any active DACs */
589 soc_playback_digital_mute(card
, 1);
591 /* suspend all pcms */
592 for_each_card_rtds(card
, rtd
) {
593 if (rtd
->dai_link
->ignore_suspend
)
596 snd_pcm_suspend_all(rtd
->pcm
);
599 snd_soc_card_suspend_pre(card
);
601 /* close any waiting streams */
602 snd_soc_flush_all_delayed_work(card
);
604 soc_dapm_suspend_resume(card
, SND_SOC_DAPM_STREAM_SUSPEND
);
606 /* Recheck all endpoints too, their state is affected by suspend */
607 dapm_mark_endpoints_dirty(card
);
608 snd_soc_dapm_sync(&card
->dapm
);
610 /* suspend all COMPONENTs */
611 for_each_card_rtds(card
, rtd
) {
613 if (rtd
->dai_link
->ignore_suspend
)
616 for_each_rtd_components(rtd
, i
, component
) {
617 struct snd_soc_dapm_context
*dapm
=
618 snd_soc_component_get_dapm(component
);
621 * ignore if component was already suspended
623 if (snd_soc_component_is_suspended(component
))
627 * If there are paths active then the COMPONENT will be
628 * held with bias _ON and should not be suspended.
630 switch (snd_soc_dapm_get_bias_level(dapm
)) {
631 case SND_SOC_BIAS_STANDBY
:
633 * If the COMPONENT is capable of idle
634 * bias off then being in STANDBY
635 * means it's doing something,
636 * otherwise fall through.
638 if (dapm
->idle_bias_off
) {
639 dev_dbg(component
->dev
,
640 "ASoC: idle_bias_off CODEC on over suspend\n");
645 case SND_SOC_BIAS_OFF
:
646 snd_soc_component_suspend(component
);
647 if (component
->regmap
)
648 regcache_mark_dirty(component
->regmap
);
649 /* deactivate pins to sleep state */
650 pinctrl_pm_select_sleep_state(component
->dev
);
653 dev_dbg(component
->dev
,
654 "ASoC: COMPONENT is on over suspend\n");
660 snd_soc_card_suspend_post(card
);
664 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
667 * deferred resume work, so resume can complete before we finished
668 * setting our codec back up, which can be very slow on I2C
670 static void soc_resume_deferred(struct work_struct
*work
)
672 struct snd_soc_card
*card
=
673 container_of(work
, struct snd_soc_card
,
674 deferred_resume_work
);
675 struct snd_soc_component
*component
;
678 * our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
679 * so userspace apps are blocked from touching us
682 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
684 /* Bring us up into D2 so that DAPM starts enabling things */
685 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
687 snd_soc_card_resume_pre(card
);
689 for_each_card_components(card
, component
) {
690 if (snd_soc_component_is_suspended(component
))
691 snd_soc_component_resume(component
);
694 soc_dapm_suspend_resume(card
, SND_SOC_DAPM_STREAM_RESUME
);
696 /* unmute any active DACs */
697 soc_playback_digital_mute(card
, 0);
699 snd_soc_card_resume_post(card
);
701 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
703 /* Recheck all endpoints too, their state is affected by suspend */
704 dapm_mark_endpoints_dirty(card
);
705 snd_soc_dapm_sync(&card
->dapm
);
707 /* userspace can access us now we are back as we were before */
708 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
711 /* powers up audio subsystem after a suspend */
712 int snd_soc_resume(struct device
*dev
)
714 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
715 struct snd_soc_component
*component
;
717 /* If the card is not initialized yet there is nothing to do */
718 if (!card
->instantiated
)
721 /* activate pins from sleep state */
722 for_each_card_components(card
, component
)
723 if (snd_soc_component_active(component
))
724 pinctrl_pm_select_default_state(component
->dev
);
726 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
727 if (!schedule_work(&card
->deferred_resume_work
))
728 dev_err(dev
, "ASoC: resume work item may be lost\n");
732 EXPORT_SYMBOL_GPL(snd_soc_resume
);
734 static void soc_resume_init(struct snd_soc_card
*card
)
736 /* deferred resume work */
737 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
740 #define snd_soc_suspend NULL
741 #define snd_soc_resume NULL
742 static inline void soc_resume_init(struct snd_soc_card
*card
)
747 static struct device_node
748 *soc_component_to_node(struct snd_soc_component
*component
)
750 struct device_node
*of_node
;
752 of_node
= component
->dev
->of_node
;
753 if (!of_node
&& component
->dev
->parent
)
754 of_node
= component
->dev
->parent
->of_node
;
759 static int snd_soc_is_matching_component(
760 const struct snd_soc_dai_link_component
*dlc
,
761 struct snd_soc_component
*component
)
763 struct device_node
*component_of_node
;
768 component_of_node
= soc_component_to_node(component
);
770 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
772 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
778 static struct snd_soc_component
*soc_find_component(
779 const struct snd_soc_dai_link_component
*dlc
)
781 struct snd_soc_component
*component
;
783 lockdep_assert_held(&client_mutex
);
788 * It returns *1st* found component, but some driver
789 * has few components by same of_node/name
791 * CPU component and generic DMAEngine component
793 for_each_component(component
)
794 if (snd_soc_is_matching_component(dlc
, component
))
801 * snd_soc_find_dai - Find a registered DAI
803 * @dlc: name of the DAI or the DAI driver and optional component info to match
805 * This function will search all registered components and their DAIs to
806 * find the DAI of the same name. The component's of_node and name
807 * should also match if being specified.
809 * Return: pointer of DAI, or NULL if not found.
811 struct snd_soc_dai
*snd_soc_find_dai(
812 const struct snd_soc_dai_link_component
*dlc
)
814 struct snd_soc_component
*component
;
815 struct snd_soc_dai
*dai
;
817 lockdep_assert_held(&client_mutex
);
819 /* Find CPU DAI from registered DAIs */
820 for_each_component(component
) {
821 if (!snd_soc_is_matching_component(dlc
, component
))
823 for_each_component_dais(component
, dai
) {
824 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
)
825 && (!dai
->driver
->name
826 || strcmp(dai
->driver
->name
, dlc
->dai_name
)))
835 EXPORT_SYMBOL_GPL(snd_soc_find_dai
);
837 struct snd_soc_dai
*snd_soc_find_dai_with_mutex(
838 const struct snd_soc_dai_link_component
*dlc
)
840 struct snd_soc_dai
*dai
;
842 mutex_lock(&client_mutex
);
843 dai
= snd_soc_find_dai(dlc
);
844 mutex_unlock(&client_mutex
);
848 EXPORT_SYMBOL_GPL(snd_soc_find_dai_with_mutex
);
850 static int soc_dai_link_sanity_check(struct snd_soc_card
*card
,
851 struct snd_soc_dai_link
*link
)
854 struct snd_soc_dai_link_component
*cpu
, *codec
, *platform
;
856 for_each_link_codecs(link
, i
, codec
) {
858 * Codec must be specified by 1 of name or OF node,
859 * not both or neither.
861 if (!!codec
->name
== !!codec
->of_node
) {
862 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
867 /* Codec DAI name must be specified */
868 if (!codec
->dai_name
) {
869 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
875 * Defer card registration if codec component is not added to
878 if (!soc_find_component(codec
)) {
880 "ASoC: codec component %s not found for link %s\n",
881 codec
->name
, link
->name
);
882 return -EPROBE_DEFER
;
886 for_each_link_platforms(link
, i
, platform
) {
888 * Platform may be specified by either name or OF node, but it
889 * can be left unspecified, then no components will be inserted
892 if (!!platform
->name
== !!platform
->of_node
) {
894 "ASoC: Neither/both platform name/of_node are set for %s\n",
900 * Defer card registration if platform component is not added to
903 if (!soc_find_component(platform
)) {
905 "ASoC: platform component %s not found for link %s\n",
906 platform
->name
, link
->name
);
907 return -EPROBE_DEFER
;
911 for_each_link_cpus(link
, i
, cpu
) {
913 * CPU device may be specified by either name or OF node, but
914 * can be left unspecified, and will be matched based on DAI
917 if (cpu
->name
&& cpu
->of_node
) {
919 "ASoC: Neither/both cpu name/of_node are set for %s\n",
925 * Defer card registration if cpu dai component is not added to
928 if ((cpu
->of_node
|| cpu
->name
) &&
929 !soc_find_component(cpu
)) {
931 "ASoC: cpu component %s not found for link %s\n",
932 cpu
->name
, link
->name
);
933 return -EPROBE_DEFER
;
937 * At least one of CPU DAI name or CPU device name/node must be
940 if (!cpu
->dai_name
&&
941 !(cpu
->name
|| cpu
->of_node
)) {
943 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
953 * snd_soc_remove_pcm_runtime - Remove a pcm_runtime from card
954 * @card: The ASoC card to which the pcm_runtime has
955 * @rtd: The pcm_runtime to remove
957 * This function removes a pcm_runtime from the ASoC card.
959 void snd_soc_remove_pcm_runtime(struct snd_soc_card
*card
,
960 struct snd_soc_pcm_runtime
*rtd
)
962 lockdep_assert_held(&client_mutex
);
964 /* release machine specific resources */
965 snd_soc_link_exit(rtd
);
968 * Notify the machine driver for extra destruction
970 snd_soc_card_remove_dai_link(card
, rtd
->dai_link
);
972 soc_free_pcm_runtime(rtd
);
974 EXPORT_SYMBOL_GPL(snd_soc_remove_pcm_runtime
);
977 * snd_soc_add_pcm_runtime - Add a pcm_runtime dynamically via dai_link
978 * @card: The ASoC card to which the pcm_runtime is added
979 * @dai_link: The DAI link to find pcm_runtime
981 * This function adds a pcm_runtime ASoC card by using dai_link.
983 * Note: Topology can use this API to add pcm_runtime when probing the
984 * topology component. And machine drivers can still define static
985 * DAI links in dai_link array.
987 int snd_soc_add_pcm_runtime(struct snd_soc_card
*card
,
988 struct snd_soc_dai_link
*dai_link
)
990 struct snd_soc_pcm_runtime
*rtd
;
991 struct snd_soc_dai_link_component
*codec
, *platform
, *cpu
;
992 struct snd_soc_component
*component
;
995 lockdep_assert_held(&client_mutex
);
998 * Notify the machine driver for extra initialization
1000 ret
= snd_soc_card_add_dai_link(card
, dai_link
);
1004 if (dai_link
->ignore
)
1007 dev_dbg(card
->dev
, "ASoC: binding %s\n", dai_link
->name
);
1009 ret
= soc_dai_link_sanity_check(card
, dai_link
);
1013 rtd
= soc_new_pcm_runtime(card
, dai_link
);
1017 for_each_link_cpus(dai_link
, i
, cpu
) {
1018 asoc_rtd_to_cpu(rtd
, i
) = snd_soc_find_dai(cpu
);
1019 if (!asoc_rtd_to_cpu(rtd
, i
)) {
1020 dev_info(card
->dev
, "ASoC: CPU DAI %s not registered\n",
1024 snd_soc_rtd_add_component(rtd
, asoc_rtd_to_cpu(rtd
, i
)->component
);
1027 /* Find CODEC from registered CODECs */
1028 for_each_link_codecs(dai_link
, i
, codec
) {
1029 asoc_rtd_to_codec(rtd
, i
) = snd_soc_find_dai(codec
);
1030 if (!asoc_rtd_to_codec(rtd
, i
)) {
1031 dev_info(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
1036 snd_soc_rtd_add_component(rtd
, asoc_rtd_to_codec(rtd
, i
)->component
);
1039 /* Find PLATFORM from registered PLATFORMs */
1040 for_each_link_platforms(dai_link
, i
, platform
) {
1041 for_each_component(component
) {
1042 if (!snd_soc_is_matching_component(platform
, component
))
1045 snd_soc_rtd_add_component(rtd
, component
);
1052 snd_soc_remove_pcm_runtime(card
, rtd
);
1053 return -EPROBE_DEFER
;
1055 EXPORT_SYMBOL_GPL(snd_soc_add_pcm_runtime
);
1057 static int soc_init_pcm_runtime(struct snd_soc_card
*card
,
1058 struct snd_soc_pcm_runtime
*rtd
)
1060 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
1061 struct snd_soc_dai
*cpu_dai
= asoc_rtd_to_cpu(rtd
, 0);
1062 struct snd_soc_component
*component
;
1065 /* set default power off timeout */
1066 rtd
->pmdown_time
= pmdown_time
;
1068 /* do machine specific initialization */
1069 ret
= snd_soc_link_init(rtd
);
1073 if (dai_link
->dai_fmt
) {
1074 ret
= snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1079 /* add DPCM sysfs entries */
1080 soc_dpcm_debugfs_add(rtd
);
1085 * most drivers will register their PCMs using DAI link ordering but
1086 * topology based drivers can use the DAI link id field to set PCM
1087 * device number and then use rtd + a base offset of the BEs.
1089 for_each_rtd_components(rtd
, i
, component
) {
1090 if (!component
->driver
->use_dai_pcm_id
)
1093 if (rtd
->dai_link
->no_pcm
)
1094 num
+= component
->driver
->be_pcm_base
;
1096 num
= rtd
->dai_link
->id
;
1099 /* create compress_device if possible */
1100 ret
= snd_soc_dai_compress_new(cpu_dai
, rtd
, num
);
1101 if (ret
!= -ENOTSUPP
)
1104 /* create the pcm */
1105 ret
= soc_new_pcm(rtd
, num
);
1107 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1108 dai_link
->stream_name
, ret
);
1112 return snd_soc_pcm_dai_new(rtd
);
1115 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1116 struct snd_soc_component
*component
)
1118 struct device_node
*of_node
= soc_component_to_node(component
);
1122 for (i
= 0; i
< card
->num_configs
; i
++) {
1123 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1125 if (snd_soc_is_matching_component(&map
->dlc
, component
) &&
1127 component
->name_prefix
= map
->name_prefix
;
1133 * If there is no configuration table or no match in the table,
1134 * check if a prefix is provided in the node
1136 ret
= of_property_read_string(of_node
, "sound-name-prefix", &str
);
1140 component
->name_prefix
= str
;
1143 static void soc_remove_component(struct snd_soc_component
*component
,
1147 if (!component
->card
)
1151 snd_soc_component_remove(component
);
1153 /* For framework level robustness */
1154 snd_soc_component_set_jack(component
, NULL
, NULL
);
1156 list_del_init(&component
->card_list
);
1157 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1158 soc_cleanup_component_debugfs(component
);
1159 component
->card
= NULL
;
1160 snd_soc_component_module_put_when_remove(component
);
1163 static int soc_probe_component(struct snd_soc_card
*card
,
1164 struct snd_soc_component
*component
)
1166 struct snd_soc_dapm_context
*dapm
=
1167 snd_soc_component_get_dapm(component
);
1168 struct snd_soc_dai
*dai
;
1172 if (snd_soc_component_is_dummy(component
))
1175 if (component
->card
) {
1176 if (component
->card
!= card
) {
1177 dev_err(component
->dev
,
1178 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1179 card
->name
, component
->card
->name
);
1185 ret
= snd_soc_component_module_get_when_probe(component
);
1189 component
->card
= card
;
1190 soc_set_name_prefix(card
, component
);
1192 soc_init_component_debugfs(component
);
1194 snd_soc_dapm_init(dapm
, card
, component
);
1196 ret
= snd_soc_dapm_new_controls(dapm
,
1197 component
->driver
->dapm_widgets
,
1198 component
->driver
->num_dapm_widgets
);
1201 dev_err(component
->dev
,
1202 "Failed to create new controls %d\n", ret
);
1206 for_each_component_dais(component
, dai
) {
1207 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1209 dev_err(component
->dev
,
1210 "Failed to create DAI widgets %d\n", ret
);
1215 ret
= snd_soc_component_probe(component
);
1219 WARN(dapm
->idle_bias_off
&&
1220 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1221 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1226 * machine specific init
1228 * snd_soc_component_set_aux()
1230 ret
= snd_soc_component_init(component
);
1234 ret
= snd_soc_add_component_controls(component
,
1235 component
->driver
->controls
,
1236 component
->driver
->num_controls
);
1240 ret
= snd_soc_dapm_add_routes(dapm
,
1241 component
->driver
->dapm_routes
,
1242 component
->driver
->num_dapm_routes
);
1244 if (card
->disable_route_checks
) {
1246 "%s: disable_route_checks set, ignoring errors on add_routes\n",
1250 "%s: snd_soc_dapm_add_routes failed: %d\n",
1256 /* see for_each_card_components */
1257 list_add(&component
->card_list
, &card
->component_dev_list
);
1261 soc_remove_component(component
, probed
);
1266 static void soc_remove_link_dais(struct snd_soc_card
*card
)
1268 struct snd_soc_pcm_runtime
*rtd
;
1271 for_each_comp_order(order
) {
1272 for_each_card_rtds(card
, rtd
) {
1273 /* remove all rtd connected DAIs in good order */
1274 snd_soc_pcm_dai_remove(rtd
, order
);
1279 static int soc_probe_link_dais(struct snd_soc_card
*card
)
1281 struct snd_soc_pcm_runtime
*rtd
;
1284 for_each_comp_order(order
) {
1285 for_each_card_rtds(card
, rtd
) {
1288 "ASoC: probe %s dai link %d late %d\n",
1289 card
->name
, rtd
->num
, order
);
1291 /* probe all rtd connected DAIs in good order */
1292 ret
= snd_soc_pcm_dai_probe(rtd
, order
);
1301 static void soc_remove_link_components(struct snd_soc_card
*card
)
1303 struct snd_soc_component
*component
;
1304 struct snd_soc_pcm_runtime
*rtd
;
1307 for_each_comp_order(order
) {
1308 for_each_card_rtds(card
, rtd
) {
1309 for_each_rtd_components(rtd
, i
, component
) {
1310 if (component
->driver
->remove_order
!= order
)
1313 soc_remove_component(component
, 1);
1319 static int soc_probe_link_components(struct snd_soc_card
*card
)
1321 struct snd_soc_component
*component
;
1322 struct snd_soc_pcm_runtime
*rtd
;
1325 for_each_comp_order(order
) {
1326 for_each_card_rtds(card
, rtd
) {
1327 for_each_rtd_components(rtd
, i
, component
) {
1328 if (component
->driver
->probe_order
!= order
)
1331 ret
= soc_probe_component(card
, component
);
1341 static void soc_unbind_aux_dev(struct snd_soc_card
*card
)
1343 struct snd_soc_component
*component
, *_component
;
1345 for_each_card_auxs_safe(card
, component
, _component
) {
1346 /* for snd_soc_component_init() */
1347 snd_soc_component_set_aux(component
, NULL
);
1348 list_del(&component
->card_aux_list
);
1352 static int soc_bind_aux_dev(struct snd_soc_card
*card
)
1354 struct snd_soc_component
*component
;
1355 struct snd_soc_aux_dev
*aux
;
1358 for_each_card_pre_auxs(card
, i
, aux
) {
1359 /* codecs, usually analog devices */
1360 component
= soc_find_component(&aux
->dlc
);
1362 return -EPROBE_DEFER
;
1364 /* for snd_soc_component_init() */
1365 snd_soc_component_set_aux(component
, aux
);
1366 /* see for_each_card_auxs */
1367 list_add(&component
->card_aux_list
, &card
->aux_comp_list
);
1372 static int soc_probe_aux_devices(struct snd_soc_card
*card
)
1374 struct snd_soc_component
*component
;
1378 for_each_comp_order(order
) {
1379 for_each_card_auxs(card
, component
) {
1380 if (component
->driver
->probe_order
!= order
)
1383 ret
= soc_probe_component(card
, component
);
1392 static void soc_remove_aux_devices(struct snd_soc_card
*card
)
1394 struct snd_soc_component
*comp
, *_comp
;
1397 for_each_comp_order(order
) {
1398 for_each_card_auxs_safe(card
, comp
, _comp
) {
1399 if (comp
->driver
->remove_order
== order
)
1400 soc_remove_component(comp
, 1);
1406 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1407 * @rtd: The runtime for which the DAI link format should be changed
1408 * @dai_fmt: The new DAI link format
1410 * This function updates the DAI link format for all DAIs connected to the DAI
1411 * link for the specified runtime.
1413 * Note: For setups with a static format set the dai_fmt field in the
1414 * corresponding snd_dai_link struct instead of using this function.
1416 * Returns 0 on success, otherwise a negative error code.
1418 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1419 unsigned int dai_fmt
)
1421 struct snd_soc_dai
*cpu_dai
;
1422 struct snd_soc_dai
*codec_dai
;
1423 unsigned int inv_dai_fmt
;
1427 for_each_rtd_codec_dais(rtd
, i
, codec_dai
) {
1428 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1429 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1434 * Flip the polarity for the "CPU" end of a CODEC<->CODEC link
1435 * the component which has non_legacy_dai_naming is Codec
1437 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1438 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1439 case SND_SOC_DAIFMT_CBM_CFM
:
1440 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1442 case SND_SOC_DAIFMT_CBM_CFS
:
1443 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1445 case SND_SOC_DAIFMT_CBS_CFM
:
1446 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1448 case SND_SOC_DAIFMT_CBS_CFS
:
1449 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1452 for_each_rtd_cpu_dais(rtd
, i
, cpu_dai
) {
1453 unsigned int fmt
= dai_fmt
;
1455 if (cpu_dai
->component
->driver
->non_legacy_dai_naming
)
1458 ret
= snd_soc_dai_set_fmt(cpu_dai
, fmt
);
1459 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1465 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1469 * If a DMI filed contain strings in this blacklist (e.g.
1470 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
1471 * as invalid and dropped when setting the card long name from DMI info.
1473 static const char * const dmi_blacklist
[] = {
1474 "To be filled by OEM",
1477 "Board Manufacturer",
1478 "Board Vendor Name",
1479 "Board Product Name",
1480 NULL
, /* terminator */
1484 * Trim special characters, and replace '-' with '_' since '-' is used to
1485 * separate different DMI fields in the card long name. Only number and
1486 * alphabet characters and a few separator characters are kept.
1488 static void cleanup_dmi_name(char *name
)
1492 for (i
= 0; name
[i
]; i
++) {
1493 if (isalnum(name
[i
]) || (name
[i
] == '.')
1494 || (name
[i
] == '_'))
1495 name
[j
++] = name
[i
];
1496 else if (name
[i
] == '-')
1504 * Check if a DMI field is valid, i.e. not containing any string
1505 * in the black list.
1507 static int is_dmi_valid(const char *field
)
1511 while (dmi_blacklist
[i
]) {
1512 if (strstr(field
, dmi_blacklist
[i
]))
1521 * Append a string to card->dmi_longname with character cleanups.
1523 static void append_dmi_string(struct snd_soc_card
*card
, const char *str
)
1525 char *dst
= card
->dmi_longname
;
1526 size_t dst_len
= sizeof(card
->dmi_longname
);
1530 snprintf(dst
+ len
, dst_len
- len
, "-%s", str
);
1532 len
++; /* skip the separator "-" */
1534 cleanup_dmi_name(dst
+ len
);
1538 * snd_soc_set_dmi_name() - Register DMI names to card
1539 * @card: The card to register DMI names
1540 * @flavour: The flavour "differentiator" for the card amongst its peers.
1542 * An Intel machine driver may be used by many different devices but are
1543 * difficult for userspace to differentiate, since machine drivers ususally
1544 * use their own name as the card short name and leave the card long name
1545 * blank. To differentiate such devices and fix bugs due to lack of
1546 * device-specific configurations, this function allows DMI info to be used
1547 * as the sound card long name, in the format of
1548 * "vendor-product-version-board"
1549 * (Character '-' is used to separate different DMI fields here).
1550 * This will help the user space to load the device-specific Use Case Manager
1551 * (UCM) configurations for the card.
1553 * Possible card long names may be:
1554 * DellInc.-XPS139343-01-0310JH
1555 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
1556 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
1558 * This function also supports flavoring the card longname to provide
1559 * the extra differentiation, like "vendor-product-version-board-flavor".
1561 * We only keep number and alphabet characters and a few separator characters
1562 * in the card long name since UCM in the user space uses the card long names
1563 * as card configuration directory names and AudoConf cannot support special
1564 * charactors like SPACE.
1566 * Returns 0 on success, otherwise a negative error code.
1568 int snd_soc_set_dmi_name(struct snd_soc_card
*card
, const char *flavour
)
1570 const char *vendor
, *product
, *product_version
, *board
;
1572 if (card
->long_name
)
1573 return 0; /* long name already set by driver or from DMI */
1578 /* make up dmi long name as: vendor-product-version-board */
1579 vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
1580 if (!vendor
|| !is_dmi_valid(vendor
)) {
1581 dev_warn(card
->dev
, "ASoC: no DMI vendor name!\n");
1585 snprintf(card
->dmi_longname
, sizeof(card
->dmi_longname
), "%s", vendor
);
1586 cleanup_dmi_name(card
->dmi_longname
);
1588 product
= dmi_get_system_info(DMI_PRODUCT_NAME
);
1589 if (product
&& is_dmi_valid(product
)) {
1590 append_dmi_string(card
, product
);
1593 * some vendors like Lenovo may only put a self-explanatory
1594 * name in the product version field
1596 product_version
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
1597 if (product_version
&& is_dmi_valid(product_version
))
1598 append_dmi_string(card
, product_version
);
1601 board
= dmi_get_system_info(DMI_BOARD_NAME
);
1602 if (board
&& is_dmi_valid(board
)) {
1603 if (!product
|| strcasecmp(board
, product
))
1604 append_dmi_string(card
, board
);
1605 } else if (!product
) {
1606 /* fall back to using legacy name */
1607 dev_warn(card
->dev
, "ASoC: no DMI board/product name!\n");
1611 /* Add flavour to dmi long name */
1613 append_dmi_string(card
, flavour
);
1615 /* set the card long name */
1616 card
->long_name
= card
->dmi_longname
;
1620 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name
);
1621 #endif /* CONFIG_DMI */
1623 static void soc_check_tplg_fes(struct snd_soc_card
*card
)
1625 struct snd_soc_component
*component
;
1626 const struct snd_soc_component_driver
*comp_drv
;
1627 struct snd_soc_dai_link
*dai_link
;
1630 for_each_component(component
) {
1632 /* does this component override BEs ? */
1633 if (!component
->driver
->ignore_machine
)
1636 /* for this machine ? */
1637 if (!strcmp(component
->driver
->ignore_machine
,
1638 card
->dev
->driver
->name
))
1640 if (strcmp(component
->driver
->ignore_machine
,
1641 dev_name(card
->dev
)))
1644 /* machine matches, so override the rtd data */
1645 for_each_card_prelinks(card
, i
, dai_link
) {
1647 /* ignore this FE */
1648 if (dai_link
->dynamic
) {
1649 dai_link
->ignore
= true;
1653 dev_dbg(card
->dev
, "info: override BE DAI link %s\n",
1654 card
->dai_link
[i
].name
);
1656 /* override platform component */
1657 if (!dai_link
->platforms
) {
1658 dev_err(card
->dev
, "init platform error");
1662 if (component
->dev
->of_node
)
1663 dai_link
->platforms
->of_node
= component
->dev
->of_node
;
1665 dai_link
->platforms
->name
= component
->name
;
1667 /* convert non BE into BE */
1668 if (!dai_link
->no_pcm
) {
1669 dai_link
->no_pcm
= 1;
1671 if (dai_link
->dpcm_playback
)
1673 "invalid configuration, dailink %s has flags no_pcm=0 and dpcm_playback=1\n",
1675 if (dai_link
->dpcm_capture
)
1677 "invalid configuration, dailink %s has flags no_pcm=0 and dpcm_capture=1\n",
1680 /* convert normal link into DPCM one */
1681 if (!(dai_link
->dpcm_playback
||
1682 dai_link
->dpcm_capture
)) {
1683 dai_link
->dpcm_playback
= !dai_link
->capture_only
;
1684 dai_link
->dpcm_capture
= !dai_link
->playback_only
;
1689 * override any BE fixups
1691 * snd_soc_link_be_hw_params_fixup()
1693 dai_link
->be_hw_params_fixup
=
1694 component
->driver
->be_hw_params_fixup
;
1697 * most BE links don't set stream name, so set it to
1698 * dai link name if it's NULL to help bind widgets.
1700 if (!dai_link
->stream_name
)
1701 dai_link
->stream_name
= dai_link
->name
;
1704 /* Inform userspace we are using alternate topology */
1705 if (component
->driver
->topology_name_prefix
) {
1707 /* topology shortname created? */
1708 if (!card
->topology_shortname_created
) {
1709 comp_drv
= component
->driver
;
1711 snprintf(card
->topology_shortname
, 32, "%s-%s",
1712 comp_drv
->topology_name_prefix
,
1714 card
->topology_shortname_created
= true;
1717 /* use topology shortname */
1718 card
->name
= card
->topology_shortname
;
1723 #define soc_setup_card_name(name, name1, name2, norm) \
1724 __soc_setup_card_name(name, sizeof(name), name1, name2, norm)
1725 static void __soc_setup_card_name(char *name
, int len
,
1726 const char *name1
, const char *name2
,
1731 snprintf(name
, len
, "%s", name1
? name1
: name2
);
1737 * Name normalization
1739 * The driver name is somewhat special, as it's used as a key for
1740 * searches in the user-space.
1743 * "abcd??efg" -> "abcd__efg"
1745 for (i
= 0; i
< len
; i
++) {
1752 if (!isalnum(name
[i
]))
1759 static void soc_cleanup_card_resources(struct snd_soc_card
*card
)
1761 struct snd_soc_pcm_runtime
*rtd
, *n
;
1764 snd_card_disconnect_sync(card
->snd_card
);
1766 snd_soc_dapm_shutdown(card
);
1768 /* remove and free each DAI */
1769 soc_remove_link_dais(card
);
1770 soc_remove_link_components(card
);
1772 for_each_card_rtds_safe(card
, rtd
, n
)
1773 snd_soc_remove_pcm_runtime(card
, rtd
);
1775 /* remove auxiliary devices */
1776 soc_remove_aux_devices(card
);
1777 soc_unbind_aux_dev(card
);
1779 snd_soc_dapm_free(&card
->dapm
);
1780 soc_cleanup_card_debugfs(card
);
1782 /* remove the card */
1783 snd_soc_card_remove(card
);
1785 if (card
->snd_card
) {
1786 snd_card_free(card
->snd_card
);
1787 card
->snd_card
= NULL
;
1791 static void snd_soc_unbind_card(struct snd_soc_card
*card
, bool unregister
)
1793 if (card
->instantiated
) {
1794 card
->instantiated
= false;
1795 snd_soc_flush_all_delayed_work(card
);
1797 soc_cleanup_card_resources(card
);
1799 list_add(&card
->list
, &unbind_card_list
);
1802 list_del(&card
->list
);
1806 static int snd_soc_bind_card(struct snd_soc_card
*card
)
1808 struct snd_soc_pcm_runtime
*rtd
;
1809 struct snd_soc_component
*component
;
1810 struct snd_soc_dai_link
*dai_link
;
1813 mutex_lock(&client_mutex
);
1814 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1816 snd_soc_dapm_init(&card
->dapm
, card
, NULL
);
1818 /* check whether any platform is ignore machine FE and using topology */
1819 soc_check_tplg_fes(card
);
1821 /* bind aux_devs too */
1822 ret
= soc_bind_aux_dev(card
);
1826 /* add predefined DAI links to the list */
1828 for_each_card_prelinks(card
, i
, dai_link
) {
1829 ret
= snd_soc_add_pcm_runtime(card
, dai_link
);
1834 /* card bind complete so register a sound card */
1835 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1836 card
->owner
, 0, &card
->snd_card
);
1839 "ASoC: can't create sound card for card %s: %d\n",
1844 soc_init_card_debugfs(card
);
1846 soc_resume_init(card
);
1848 ret
= snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1849 card
->num_dapm_widgets
);
1853 ret
= snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
1854 card
->num_of_dapm_widgets
);
1858 /* initialise the sound card only once */
1859 ret
= snd_soc_card_probe(card
);
1863 /* probe all components used by DAI links on this card */
1864 ret
= soc_probe_link_components(card
);
1867 "ASoC: failed to instantiate card %d\n", ret
);
1871 /* probe auxiliary components */
1872 ret
= soc_probe_aux_devices(card
);
1875 "ASoC: failed to probe aux component %d\n", ret
);
1879 /* probe all DAI links on this card */
1880 ret
= soc_probe_link_dais(card
);
1883 "ASoC: failed to instantiate card %d\n", ret
);
1887 for_each_card_rtds(card
, rtd
) {
1888 ret
= soc_init_pcm_runtime(card
, rtd
);
1893 snd_soc_dapm_link_dai_widgets(card
);
1894 snd_soc_dapm_connect_dai_link_widgets(card
);
1896 ret
= snd_soc_add_card_controls(card
, card
->controls
,
1897 card
->num_controls
);
1901 ret
= snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1902 card
->num_dapm_routes
);
1904 if (card
->disable_route_checks
) {
1906 "%s: disable_route_checks set, ignoring errors on add_routes\n",
1910 "%s: snd_soc_dapm_add_routes failed: %d\n",
1916 ret
= snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
1917 card
->num_of_dapm_routes
);
1921 /* try to set some sane longname if DMI is available */
1922 snd_soc_set_dmi_name(card
, NULL
);
1924 soc_setup_card_name(card
->snd_card
->shortname
,
1925 card
->name
, NULL
, 0);
1926 soc_setup_card_name(card
->snd_card
->longname
,
1927 card
->long_name
, card
->name
, 0);
1928 soc_setup_card_name(card
->snd_card
->driver
,
1929 card
->driver_name
, card
->name
, 1);
1931 if (card
->components
) {
1932 /* the current implementation of snd_component_add() accepts */
1933 /* multiple components in the string separated by space, */
1934 /* but the string collision (identical string) check might */
1935 /* not work correctly */
1936 ret
= snd_component_add(card
->snd_card
, card
->components
);
1938 dev_err(card
->dev
, "ASoC: %s snd_component_add() failed: %d\n",
1944 ret
= snd_soc_card_late_probe(card
);
1948 snd_soc_dapm_new_widgets(card
);
1950 ret
= snd_card_register(card
->snd_card
);
1952 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1957 card
->instantiated
= 1;
1958 dapm_mark_endpoints_dirty(card
);
1959 snd_soc_dapm_sync(&card
->dapm
);
1961 /* deactivate pins to sleep state */
1962 for_each_card_components(card
, component
)
1963 if (!snd_soc_component_active(component
))
1964 pinctrl_pm_select_sleep_state(component
->dev
);
1968 soc_cleanup_card_resources(card
);
1970 mutex_unlock(&card
->mutex
);
1971 mutex_unlock(&client_mutex
);
1976 /* probes a new socdev */
1977 static int soc_probe(struct platform_device
*pdev
)
1979 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1982 * no card, so machine driver should be registering card
1983 * we should not be here in that case so ret error
1988 dev_warn(&pdev
->dev
,
1989 "ASoC: machine %s should use snd_soc_register_card()\n",
1992 /* Bodge while we unpick instantiation */
1993 card
->dev
= &pdev
->dev
;
1995 return devm_snd_soc_register_card(&pdev
->dev
, card
);
1998 int snd_soc_poweroff(struct device
*dev
)
2000 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2001 struct snd_soc_component
*component
;
2003 if (!card
->instantiated
)
2007 * Flush out pmdown_time work - we actually do want to run it
2008 * now, we're shutting down so no imminent restart.
2010 snd_soc_flush_all_delayed_work(card
);
2012 snd_soc_dapm_shutdown(card
);
2014 /* deactivate pins to sleep state */
2015 for_each_card_components(card
, component
)
2016 pinctrl_pm_select_sleep_state(component
->dev
);
2020 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2022 const struct dev_pm_ops snd_soc_pm_ops
= {
2023 .suspend
= snd_soc_suspend
,
2024 .resume
= snd_soc_resume
,
2025 .freeze
= snd_soc_suspend
,
2026 .thaw
= snd_soc_resume
,
2027 .poweroff
= snd_soc_poweroff
,
2028 .restore
= snd_soc_resume
,
2030 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2032 /* ASoC platform driver */
2033 static struct platform_driver soc_driver
= {
2035 .name
= "soc-audio",
2036 .pm
= &snd_soc_pm_ops
,
2042 * snd_soc_cnew - create new control
2043 * @_template: control template
2044 * @data: control private data
2045 * @long_name: control long name
2046 * @prefix: control name prefix
2048 * Create a new mixer control from a template control.
2050 * Returns 0 for success, else error.
2052 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2053 void *data
, const char *long_name
,
2056 struct snd_kcontrol_new
template;
2057 struct snd_kcontrol
*kcontrol
;
2060 memcpy(&template, _template
, sizeof(template));
2064 long_name
= template.name
;
2067 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2071 template.name
= name
;
2073 template.name
= long_name
;
2076 kcontrol
= snd_ctl_new1(&template, data
);
2082 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2084 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2085 const struct snd_kcontrol_new
*controls
, int num_controls
,
2086 const char *prefix
, void *data
)
2090 for (i
= 0; i
< num_controls
; i
++) {
2091 const struct snd_kcontrol_new
*control
= &controls
[i
];
2093 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2094 control
->name
, prefix
));
2096 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2097 control
->name
, err
);
2106 * snd_soc_add_component_controls - Add an array of controls to a component.
2108 * @component: Component to add controls to
2109 * @controls: Array of controls to add
2110 * @num_controls: Number of elements in the array
2112 * Return: 0 for success, else error.
2114 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2115 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2117 struct snd_card
*card
= component
->card
->snd_card
;
2119 return snd_soc_add_controls(card
, component
->dev
, controls
,
2120 num_controls
, component
->name_prefix
, component
);
2122 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2125 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2126 * Convenience function to add a list of controls.
2128 * @soc_card: SoC card to add controls to
2129 * @controls: array of controls to add
2130 * @num_controls: number of elements in the array
2132 * Return 0 for success, else error.
2134 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2135 const struct snd_kcontrol_new
*controls
, int num_controls
)
2137 struct snd_card
*card
= soc_card
->snd_card
;
2139 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2142 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2145 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2146 * Convienience function to add a list of controls.
2148 * @dai: DAI to add controls to
2149 * @controls: array of controls to add
2150 * @num_controls: number of elements in the array
2152 * Return 0 for success, else error.
2154 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2155 const struct snd_kcontrol_new
*controls
, int num_controls
)
2157 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2159 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2162 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2165 * snd_soc_register_card - Register a card with the ASoC core
2167 * @card: Card to register
2170 int snd_soc_register_card(struct snd_soc_card
*card
)
2172 if (!card
->name
|| !card
->dev
)
2175 dev_set_drvdata(card
->dev
, card
);
2177 INIT_LIST_HEAD(&card
->widgets
);
2178 INIT_LIST_HEAD(&card
->paths
);
2179 INIT_LIST_HEAD(&card
->dapm_list
);
2180 INIT_LIST_HEAD(&card
->aux_comp_list
);
2181 INIT_LIST_HEAD(&card
->component_dev_list
);
2182 INIT_LIST_HEAD(&card
->list
);
2183 INIT_LIST_HEAD(&card
->rtd_list
);
2184 INIT_LIST_HEAD(&card
->dapm_dirty
);
2185 INIT_LIST_HEAD(&card
->dobj_list
);
2187 card
->instantiated
= 0;
2188 mutex_init(&card
->mutex
);
2189 mutex_init(&card
->dapm_mutex
);
2190 mutex_init(&card
->pcm_mutex
);
2191 spin_lock_init(&card
->dpcm_lock
);
2193 return snd_soc_bind_card(card
);
2195 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2198 * snd_soc_unregister_card - Unregister a card with the ASoC core
2200 * @card: Card to unregister
2203 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2205 mutex_lock(&client_mutex
);
2206 snd_soc_unbind_card(card
, true);
2207 mutex_unlock(&client_mutex
);
2208 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2212 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2215 * Simplify DAI link configuration by removing ".-1" from device names
2216 * and sanitizing names.
2218 static char *fmt_single_name(struct device
*dev
, int *id
)
2220 const char *devname
= dev_name(dev
);
2222 unsigned int id1
, id2
;
2224 if (devname
== NULL
)
2227 name
= devm_kstrdup(dev
, devname
, GFP_KERNEL
);
2231 /* are we a "%s.%d" name (platform and SPI components) */
2232 found
= strstr(name
, dev
->driver
->name
);
2235 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2237 /* discard ID from name if ID == -1 */
2239 found
[strlen(dev
->driver
->name
)] = '\0';
2242 /* I2C component devices are named "bus-addr" */
2243 } else if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2245 /* create unique ID number from I2C addr and bus */
2246 *id
= ((id1
& 0xffff) << 16) + id2
;
2248 devm_kfree(dev
, name
);
2250 /* sanitize component name for DAI link creation */
2251 name
= devm_kasprintf(dev
, GFP_KERNEL
, "%s.%s", dev
->driver
->name
, devname
);
2260 * Simplify DAI link naming for single devices with multiple DAIs by removing
2261 * any ".-1" and using the DAI name (instead of device name).
2263 static inline char *fmt_multiple_name(struct device
*dev
,
2264 struct snd_soc_dai_driver
*dai_drv
)
2266 if (dai_drv
->name
== NULL
) {
2268 "ASoC: error - multiple DAI %s registered with no name\n",
2273 return devm_kstrdup(dev
, dai_drv
->name
, GFP_KERNEL
);
2276 void snd_soc_unregister_dai(struct snd_soc_dai
*dai
)
2278 dev_dbg(dai
->dev
, "ASoC: Unregistered DAI '%s'\n", dai
->name
);
2279 list_del(&dai
->list
);
2281 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
2284 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
2286 * @component: The component the DAIs are registered for
2287 * @dai_drv: DAI driver to use for the DAI
2288 * @legacy_dai_naming: if %true, use legacy single-name format;
2289 * if %false, use multiple-name format;
2291 * Topology can use this API to register DAIs when probing a component.
2292 * These DAIs's widgets will be freed in the card cleanup and the DAIs
2293 * will be freed in the component cleanup.
2295 struct snd_soc_dai
*snd_soc_register_dai(struct snd_soc_component
*component
,
2296 struct snd_soc_dai_driver
*dai_drv
,
2297 bool legacy_dai_naming
)
2299 struct device
*dev
= component
->dev
;
2300 struct snd_soc_dai
*dai
;
2302 dev_dbg(dev
, "ASoC: dynamically register DAI %s\n", dev_name(dev
));
2304 lockdep_assert_held(&client_mutex
);
2306 dai
= devm_kzalloc(dev
, sizeof(*dai
), GFP_KERNEL
);
2311 * Back in the old days when we still had component-less DAIs,
2312 * instead of having a static name, component-less DAIs would
2313 * inherit the name of the parent device so it is possible to
2314 * register multiple instances of the DAI. We still need to keep
2315 * the same naming style even though those DAIs are not
2316 * component-less anymore.
2318 if (legacy_dai_naming
&&
2319 (dai_drv
->id
== 0 || dai_drv
->name
== NULL
)) {
2320 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2322 dai
->name
= fmt_multiple_name(dev
, dai_drv
);
2324 dai
->id
= dai_drv
->id
;
2326 dai
->id
= component
->num_dai
;
2331 dai
->component
= component
;
2333 dai
->driver
= dai_drv
;
2335 /* see for_each_component_dais */
2336 list_add_tail(&dai
->list
, &component
->dai_list
);
2337 component
->num_dai
++;
2339 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
2344 * snd_soc_unregister_dais - Unregister DAIs from the ASoC core
2346 * @component: The component for which the DAIs should be unregistered
2348 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
2350 struct snd_soc_dai
*dai
, *_dai
;
2352 for_each_component_dais_safe(component
, dai
, _dai
)
2353 snd_soc_unregister_dai(dai
);
2357 * snd_soc_register_dais - Register a DAI with the ASoC core
2359 * @component: The component the DAIs are registered for
2360 * @dai_drv: DAI driver to use for the DAIs
2361 * @count: Number of DAIs
2363 static int snd_soc_register_dais(struct snd_soc_component
*component
,
2364 struct snd_soc_dai_driver
*dai_drv
,
2367 struct snd_soc_dai
*dai
;
2371 for (i
= 0; i
< count
; i
++) {
2372 dai
= snd_soc_register_dai(component
, dai_drv
+ i
, count
== 1 &&
2373 !component
->driver
->non_legacy_dai_naming
);
2383 snd_soc_unregister_dais(component
);
2388 #define ENDIANNESS_MAP(name) \
2389 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
2390 static u64 endianness_format_map
[] = {
2391 ENDIANNESS_MAP(S16_
),
2392 ENDIANNESS_MAP(U16_
),
2393 ENDIANNESS_MAP(S24_
),
2394 ENDIANNESS_MAP(U24_
),
2395 ENDIANNESS_MAP(S32_
),
2396 ENDIANNESS_MAP(U32_
),
2397 ENDIANNESS_MAP(S24_3
),
2398 ENDIANNESS_MAP(U24_3
),
2399 ENDIANNESS_MAP(S20_3
),
2400 ENDIANNESS_MAP(U20_3
),
2401 ENDIANNESS_MAP(S18_3
),
2402 ENDIANNESS_MAP(U18_3
),
2403 ENDIANNESS_MAP(FLOAT_
),
2404 ENDIANNESS_MAP(FLOAT64_
),
2405 ENDIANNESS_MAP(IEC958_SUBFRAME_
),
2409 * Fix up the DAI formats for endianness: codecs don't actually see
2410 * the endianness of the data but we're using the CPU format
2411 * definitions which do need to include endianness so we ensure that
2412 * codec DAIs always have both big and little endian variants set.
2414 static void convert_endianness_formats(struct snd_soc_pcm_stream
*stream
)
2418 for (i
= 0; i
< ARRAY_SIZE(endianness_format_map
); i
++)
2419 if (stream
->formats
& endianness_format_map
[i
])
2420 stream
->formats
|= endianness_format_map
[i
];
2423 static void snd_soc_try_rebind_card(void)
2425 struct snd_soc_card
*card
, *c
;
2427 list_for_each_entry_safe(card
, c
, &unbind_card_list
, list
)
2428 if (!snd_soc_bind_card(card
))
2429 list_del(&card
->list
);
2432 static void snd_soc_del_component_unlocked(struct snd_soc_component
*component
)
2434 struct snd_soc_card
*card
= component
->card
;
2436 snd_soc_unregister_dais(component
);
2439 snd_soc_unbind_card(card
, false);
2441 list_del(&component
->list
);
2444 int snd_soc_component_initialize(struct snd_soc_component
*component
,
2445 const struct snd_soc_component_driver
*driver
,
2448 INIT_LIST_HEAD(&component
->dai_list
);
2449 INIT_LIST_HEAD(&component
->dobj_list
);
2450 INIT_LIST_HEAD(&component
->card_list
);
2451 mutex_init(&component
->io_mutex
);
2453 component
->name
= fmt_single_name(dev
, &component
->id
);
2454 if (!component
->name
) {
2455 dev_err(dev
, "ASoC: Failed to allocate name\n");
2459 component
->dev
= dev
;
2460 component
->driver
= driver
;
2464 EXPORT_SYMBOL_GPL(snd_soc_component_initialize
);
2466 int snd_soc_add_component(struct snd_soc_component
*component
,
2467 struct snd_soc_dai_driver
*dai_drv
,
2473 mutex_lock(&client_mutex
);
2475 if (component
->driver
->endianness
) {
2476 for (i
= 0; i
< num_dai
; i
++) {
2477 convert_endianness_formats(&dai_drv
[i
].playback
);
2478 convert_endianness_formats(&dai_drv
[i
].capture
);
2482 ret
= snd_soc_register_dais(component
, dai_drv
, num_dai
);
2484 dev_err(component
->dev
, "ASoC: Failed to register DAIs: %d\n",
2489 if (!component
->driver
->write
&& !component
->driver
->read
) {
2490 if (!component
->regmap
)
2491 component
->regmap
= dev_get_regmap(component
->dev
,
2493 if (component
->regmap
)
2494 snd_soc_component_setup_regmap(component
);
2497 /* see for_each_component */
2498 list_add(&component
->list
, &component_list
);
2502 snd_soc_del_component_unlocked(component
);
2504 mutex_unlock(&client_mutex
);
2507 snd_soc_try_rebind_card();
2511 EXPORT_SYMBOL_GPL(snd_soc_add_component
);
2513 int snd_soc_register_component(struct device
*dev
,
2514 const struct snd_soc_component_driver
*component_driver
,
2515 struct snd_soc_dai_driver
*dai_drv
,
2518 struct snd_soc_component
*component
;
2521 component
= devm_kzalloc(dev
, sizeof(*component
), GFP_KERNEL
);
2525 ret
= snd_soc_component_initialize(component
, component_driver
, dev
);
2529 return snd_soc_add_component(component
, dai_drv
, num_dai
);
2531 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
2534 * snd_soc_unregister_component_by_driver - Unregister component using a given driver
2535 * from the ASoC core
2537 * @dev: The device to unregister
2538 * @component_driver: The component driver to unregister
2540 void snd_soc_unregister_component_by_driver(struct device
*dev
,
2541 const struct snd_soc_component_driver
*component_driver
)
2543 struct snd_soc_component
*component
;
2545 if (!component_driver
)
2548 mutex_lock(&client_mutex
);
2549 component
= snd_soc_lookup_component_nolocked(dev
, component_driver
->name
);
2553 snd_soc_del_component_unlocked(component
);
2556 mutex_unlock(&client_mutex
);
2558 EXPORT_SYMBOL_GPL(snd_soc_unregister_component_by_driver
);
2561 * snd_soc_unregister_component - Unregister all related component
2562 * from the ASoC core
2564 * @dev: The device to unregister
2566 void snd_soc_unregister_component(struct device
*dev
)
2568 struct snd_soc_component
*component
;
2570 mutex_lock(&client_mutex
);
2572 component
= snd_soc_lookup_component_nolocked(dev
, NULL
);
2576 snd_soc_del_component_unlocked(component
);
2578 mutex_unlock(&client_mutex
);
2580 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
2582 /* Retrieve a card's name from device tree */
2583 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
2584 const char *propname
)
2586 struct device_node
*np
;
2590 pr_err("card->dev is not set before calling %s\n", __func__
);
2594 np
= card
->dev
->of_node
;
2596 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
2598 * EINVAL means the property does not exist. This is fine providing
2599 * card->name was previously set, which is checked later in
2600 * snd_soc_register_card.
2602 if (ret
< 0 && ret
!= -EINVAL
) {
2604 "ASoC: Property '%s' could not be read: %d\n",
2611 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
2613 static const struct snd_soc_dapm_widget simple_widgets
[] = {
2614 SND_SOC_DAPM_MIC("Microphone", NULL
),
2615 SND_SOC_DAPM_LINE("Line", NULL
),
2616 SND_SOC_DAPM_HP("Headphone", NULL
),
2617 SND_SOC_DAPM_SPK("Speaker", NULL
),
2620 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
2621 const char *propname
)
2623 struct device_node
*np
= card
->dev
->of_node
;
2624 struct snd_soc_dapm_widget
*widgets
;
2625 const char *template, *wname
;
2626 int i
, j
, num_widgets
, ret
;
2628 num_widgets
= of_property_count_strings(np
, propname
);
2629 if (num_widgets
< 0) {
2631 "ASoC: Property '%s' does not exist\n", propname
);
2634 if (num_widgets
& 1) {
2636 "ASoC: Property '%s' length is not even\n", propname
);
2642 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
2647 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
2651 "ASoC: Could not allocate memory for widgets\n");
2655 for (i
= 0; i
< num_widgets
; i
++) {
2656 ret
= of_property_read_string_index(np
, propname
,
2660 "ASoC: Property '%s' index %d read error:%d\n",
2661 propname
, 2 * i
, ret
);
2665 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
2666 if (!strncmp(template, simple_widgets
[j
].name
,
2667 strlen(simple_widgets
[j
].name
))) {
2668 widgets
[i
] = simple_widgets
[j
];
2673 if (j
>= ARRAY_SIZE(simple_widgets
)) {
2675 "ASoC: DAPM widget '%s' is not supported\n",
2680 ret
= of_property_read_string_index(np
, propname
,
2685 "ASoC: Property '%s' index %d read error:%d\n",
2686 propname
, (2 * i
) + 1, ret
);
2690 widgets
[i
].name
= wname
;
2693 card
->of_dapm_widgets
= widgets
;
2694 card
->num_of_dapm_widgets
= num_widgets
;
2698 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
2700 int snd_soc_of_get_slot_mask(struct device_node
*np
,
2701 const char *prop_name
,
2705 const __be32
*of_slot_mask
= of_get_property(np
, prop_name
, &val
);
2711 for (i
= 0; i
< val
; i
++)
2712 if (be32_to_cpup(&of_slot_mask
[i
]))
2717 EXPORT_SYMBOL_GPL(snd_soc_of_get_slot_mask
);
2719 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
2720 unsigned int *tx_mask
,
2721 unsigned int *rx_mask
,
2722 unsigned int *slots
,
2723 unsigned int *slot_width
)
2729 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-tx-mask", tx_mask
);
2731 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-rx-mask", rx_mask
);
2733 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
2734 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
2742 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
2743 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
2753 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
2755 void snd_soc_of_parse_node_prefix(struct device_node
*np
,
2756 struct snd_soc_codec_conf
*codec_conf
,
2757 struct device_node
*of_node
,
2758 const char *propname
)
2763 ret
= of_property_read_string(np
, propname
, &str
);
2765 /* no prefix is not error */
2769 codec_conf
->dlc
.of_node
= of_node
;
2770 codec_conf
->name_prefix
= str
;
2772 EXPORT_SYMBOL_GPL(snd_soc_of_parse_node_prefix
);
2774 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
2775 const char *propname
)
2777 struct device_node
*np
= card
->dev
->of_node
;
2779 struct snd_soc_dapm_route
*routes
;
2782 num_routes
= of_property_count_strings(np
, propname
);
2783 if (num_routes
< 0 || num_routes
& 1) {
2785 "ASoC: Property '%s' does not exist or its length is not even\n",
2791 routes
= devm_kcalloc(card
->dev
, num_routes
, sizeof(*routes
),
2795 "ASoC: Could not allocate DAPM route table\n");
2799 for (i
= 0; i
< num_routes
; i
++) {
2800 ret
= of_property_read_string_index(np
, propname
,
2801 2 * i
, &routes
[i
].sink
);
2804 "ASoC: Property '%s' index %d could not be read: %d\n",
2805 propname
, 2 * i
, ret
);
2808 ret
= of_property_read_string_index(np
, propname
,
2809 (2 * i
) + 1, &routes
[i
].source
);
2812 "ASoC: Property '%s' index %d could not be read: %d\n",
2813 propname
, (2 * i
) + 1, ret
);
2818 card
->num_of_dapm_routes
= num_routes
;
2819 card
->of_dapm_routes
= routes
;
2823 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
2825 int snd_soc_of_parse_aux_devs(struct snd_soc_card
*card
, const char *propname
)
2827 struct device_node
*node
= card
->dev
->of_node
;
2828 struct snd_soc_aux_dev
*aux
;
2831 num
= of_count_phandle_with_args(node
, propname
, NULL
);
2832 if (num
== -ENOENT
) {
2834 } else if (num
< 0) {
2835 dev_err(card
->dev
, "ASOC: Property '%s' could not be read: %d\n",
2840 aux
= devm_kcalloc(card
->dev
, num
, sizeof(*aux
), GFP_KERNEL
);
2843 card
->aux_dev
= aux
;
2844 card
->num_aux_devs
= num
;
2846 for_each_card_pre_auxs(card
, i
, aux
) {
2847 aux
->dlc
.of_node
= of_parse_phandle(node
, propname
, i
);
2848 if (!aux
->dlc
.of_node
)
2854 EXPORT_SYMBOL_GPL(snd_soc_of_parse_aux_devs
);
2856 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
2858 struct device_node
**bitclkmaster
,
2859 struct device_node
**framemaster
)
2863 unsigned int format
= 0;
2869 } of_fmt_table
[] = {
2870 { "i2s", SND_SOC_DAIFMT_I2S
},
2871 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
2872 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
2873 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
2874 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
2875 { "ac97", SND_SOC_DAIFMT_AC97
},
2876 { "pdm", SND_SOC_DAIFMT_PDM
},
2877 { "msb", SND_SOC_DAIFMT_MSB
},
2878 { "lsb", SND_SOC_DAIFMT_LSB
},
2885 * check "dai-format = xxx"
2886 * or "[prefix]format = xxx"
2887 * SND_SOC_DAIFMT_FORMAT_MASK area
2889 ret
= of_property_read_string(np
, "dai-format", &str
);
2891 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
2892 ret
= of_property_read_string(np
, prop
, &str
);
2895 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
2896 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
2897 format
|= of_fmt_table
[i
].val
;
2904 * check "[prefix]continuous-clock"
2905 * SND_SOC_DAIFMT_CLOCK_MASK area
2907 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
2908 if (of_property_read_bool(np
, prop
))
2909 format
|= SND_SOC_DAIFMT_CONT
;
2911 format
|= SND_SOC_DAIFMT_GATED
;
2914 * check "[prefix]bitclock-inversion"
2915 * check "[prefix]frame-inversion"
2916 * SND_SOC_DAIFMT_INV_MASK area
2918 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
2919 bit
= !!of_get_property(np
, prop
, NULL
);
2921 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
2922 frame
= !!of_get_property(np
, prop
, NULL
);
2924 switch ((bit
<< 4) + frame
) {
2926 format
|= SND_SOC_DAIFMT_IB_IF
;
2929 format
|= SND_SOC_DAIFMT_IB_NF
;
2932 format
|= SND_SOC_DAIFMT_NB_IF
;
2935 /* SND_SOC_DAIFMT_NB_NF is default */
2940 * check "[prefix]bitclock-master"
2941 * check "[prefix]frame-master"
2942 * SND_SOC_DAIFMT_MASTER_MASK area
2944 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
2945 bit
= !!of_get_property(np
, prop
, NULL
);
2946 if (bit
&& bitclkmaster
)
2947 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
2949 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
2950 frame
= !!of_get_property(np
, prop
, NULL
);
2951 if (frame
&& framemaster
)
2952 *framemaster
= of_parse_phandle(np
, prop
, 0);
2954 switch ((bit
<< 4) + frame
) {
2956 format
|= SND_SOC_DAIFMT_CBM_CFM
;
2959 format
|= SND_SOC_DAIFMT_CBM_CFS
;
2962 format
|= SND_SOC_DAIFMT_CBS_CFM
;
2965 format
|= SND_SOC_DAIFMT_CBS_CFS
;
2971 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
2973 int snd_soc_get_dai_id(struct device_node
*ep
)
2975 struct snd_soc_component
*component
;
2976 struct snd_soc_dai_link_component dlc
;
2979 dlc
.of_node
= of_graph_get_port_parent(ep
);
2982 * For example HDMI case, HDMI has video/sound port,
2983 * but ALSA SoC needs sound port number only.
2984 * Thus counting HDMI DT port/endpoint doesn't work.
2985 * Then, it should have .of_xlate_dai_id
2988 mutex_lock(&client_mutex
);
2989 component
= soc_find_component(&dlc
);
2991 ret
= snd_soc_component_of_xlate_dai_id(component
, ep
);
2992 mutex_unlock(&client_mutex
);
2994 of_node_put(dlc
.of_node
);
2998 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id
);
3000 int snd_soc_get_dai_name(const struct of_phandle_args
*args
,
3001 const char **dai_name
)
3003 struct snd_soc_component
*pos
;
3004 struct device_node
*component_of_node
;
3005 int ret
= -EPROBE_DEFER
;
3007 mutex_lock(&client_mutex
);
3008 for_each_component(pos
) {
3009 component_of_node
= soc_component_to_node(pos
);
3011 if (component_of_node
!= args
->np
)
3014 ret
= snd_soc_component_of_xlate_dai_name(pos
, args
, dai_name
);
3015 if (ret
== -ENOTSUPP
) {
3016 struct snd_soc_dai
*dai
;
3019 switch (args
->args_count
) {
3021 id
= 0; /* same as dai_drv[0] */
3031 if (id
< 0 || id
>= pos
->num_dai
) {
3038 /* find target DAI */
3039 for_each_component_dais(pos
, dai
) {
3045 *dai_name
= dai
->driver
->name
;
3047 *dai_name
= pos
->name
;
3050 * if another error than ENOTSUPP is returned go on and
3051 * check if another component is provided with the same
3052 * node. This may happen if a device provides several
3060 mutex_unlock(&client_mutex
);
3063 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name
);
3065 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
3066 const char **dai_name
)
3068 struct of_phandle_args args
;
3071 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
3072 "#sound-dai-cells", 0, &args
);
3076 ret
= snd_soc_get_dai_name(&args
, dai_name
);
3078 of_node_put(args
.np
);
3082 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
3085 * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array
3086 * @dai_link: DAI link
3088 * Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs().
3090 void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link
*dai_link
)
3092 struct snd_soc_dai_link_component
*component
;
3095 for_each_link_codecs(dai_link
, index
, component
) {
3096 if (!component
->of_node
)
3098 of_node_put(component
->of_node
);
3099 component
->of_node
= NULL
;
3102 EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs
);
3105 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3107 * @of_node: Device node
3108 * @dai_link: DAI link
3110 * Builds an array of CODEC DAI components from the DAI link property
3112 * The array is set in the DAI link and the number of DAIs is set accordingly.
3113 * The device nodes in the array (of_node) must be dereferenced by calling
3114 * snd_soc_of_put_dai_link_codecs() on @dai_link.
3116 * Returns 0 for success
3118 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
3119 struct device_node
*of_node
,
3120 struct snd_soc_dai_link
*dai_link
)
3122 struct of_phandle_args args
;
3123 struct snd_soc_dai_link_component
*component
;
3125 int index
, num_codecs
, ret
;
3127 /* Count the number of CODECs */
3129 num_codecs
= of_count_phandle_with_args(of_node
, name
,
3130 "#sound-dai-cells");
3131 if (num_codecs
<= 0) {
3132 if (num_codecs
== -ENOENT
)
3133 dev_err(dev
, "No 'sound-dai' property\n");
3135 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
3138 component
= devm_kcalloc(dev
,
3139 num_codecs
, sizeof(*component
),
3143 dai_link
->codecs
= component
;
3144 dai_link
->num_codecs
= num_codecs
;
3146 /* Parse the list */
3147 for_each_link_codecs(dai_link
, index
, component
) {
3148 ret
= of_parse_phandle_with_args(of_node
, name
,
3153 component
->of_node
= args
.np
;
3154 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
3160 snd_soc_of_put_dai_link_codecs(dai_link
);
3161 dai_link
->codecs
= NULL
;
3162 dai_link
->num_codecs
= 0;
3165 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
3167 static int __init
snd_soc_init(void)
3169 snd_soc_debugfs_init();
3170 snd_soc_util_init();
3172 return platform_driver_register(&soc_driver
);
3174 module_init(snd_soc_init
);
3176 static void __exit
snd_soc_exit(void)
3178 snd_soc_util_exit();
3179 snd_soc_debugfs_exit();
3181 platform_driver_unregister(&soc_driver
);
3183 module_exit(snd_soc_exit
);
3185 /* Module information */
3186 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3187 MODULE_DESCRIPTION("ALSA SoC Core");
3188 MODULE_LICENSE("GPL");
3189 MODULE_ALIAS("platform:soc-audio");