2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/of_graph.h>
38 #include <linux/dmi.h>
39 #include <sound/core.h>
40 #include <sound/jack.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/soc-dpcm.h>
45 #include <sound/soc-topology.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry
*snd_soc_debugfs_root
;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
58 static DEFINE_MUTEX(client_mutex
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
61 static LIST_HEAD(component_list
);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time
= 5000;
69 module_param(pmdown_time
, int, 0);
70 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
72 /* If a DMI filed contain strings in this blacklist (e.g.
73 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
74 * as invalid and dropped when setting the card long name from DMI info.
76 static const char * const dmi_blacklist
[] = {
77 "To be filled by OEM",
83 NULL
, /* terminator */
86 /* returns the minimum number of bytes needed to represent
87 * a particular given value */
88 static int min_bytes_needed(unsigned long val
)
93 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
96 c
= (sizeof val
* 8) - c
;
104 /* fill buf which is 'len' bytes with a formatted
105 * string of the form 'reg: value\n' */
106 static int format_register_str(struct snd_soc_codec
*codec
,
107 unsigned int reg
, char *buf
, size_t len
)
109 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
110 int regsize
= codec
->driver
->reg_word_size
* 2;
113 /* +2 for ': ' and + 1 for '\n' */
114 if (wordsize
+ regsize
+ 2 + 1 != len
)
117 sprintf(buf
, "%.*x: ", wordsize
, reg
);
120 ret
= snd_soc_read(codec
, reg
);
122 memset(buf
, 'X', regsize
);
124 sprintf(buf
, "%.*x", regsize
, ret
);
126 /* no NUL-termination needed */
130 /* codec register dump */
131 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
132 size_t count
, loff_t pos
)
135 int wordsize
, regsize
;
140 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
141 regsize
= codec
->driver
->reg_word_size
* 2;
143 len
= wordsize
+ regsize
+ 2 + 1;
145 if (!codec
->driver
->reg_cache_size
)
148 if (codec
->driver
->reg_cache_step
)
149 step
= codec
->driver
->reg_cache_step
;
151 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total
+ len
>= count
- 1)
157 format_register_str(codec
, i
, buf
+ total
, len
);
163 total
= min(total
, count
- 1);
168 static ssize_t
codec_reg_show(struct device
*dev
,
169 struct device_attribute
*attr
, char *buf
)
171 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
173 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
176 static DEVICE_ATTR_RO(codec_reg
);
178 static ssize_t
pmdown_time_show(struct device
*dev
,
179 struct device_attribute
*attr
, char *buf
)
181 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
183 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
186 static ssize_t
pmdown_time_set(struct device
*dev
,
187 struct device_attribute
*attr
,
188 const char *buf
, size_t count
)
190 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
193 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
200 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
202 static struct attribute
*soc_dev_attrs
[] = {
203 &dev_attr_codec_reg
.attr
,
204 &dev_attr_pmdown_time
.attr
,
208 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
209 struct attribute
*attr
, int idx
)
211 struct device
*dev
= kobj_to_dev(kobj
);
212 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
214 if (attr
== &dev_attr_pmdown_time
.attr
)
215 return attr
->mode
; /* always visible */
216 return rtd
->num_codecs
? attr
->mode
: 0; /* enabled only with codec */
219 static const struct attribute_group soc_dapm_dev_group
= {
220 .attrs
= soc_dapm_dev_attrs
,
221 .is_visible
= soc_dev_attr_is_visible
,
224 static const struct attribute_group soc_dev_group
= {
225 .attrs
= soc_dev_attrs
,
226 .is_visible
= soc_dev_attr_is_visible
,
229 static const struct attribute_group
*soc_dev_attr_groups
[] = {
235 #ifdef CONFIG_DEBUG_FS
236 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
237 size_t count
, loff_t
*ppos
)
240 struct snd_soc_codec
*codec
= file
->private_data
;
243 if (*ppos
< 0 || !count
)
246 buf
= kmalloc(count
, GFP_KERNEL
);
250 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
252 if (copy_to_user(user_buf
, buf
, ret
)) {
263 static ssize_t
codec_reg_write_file(struct file
*file
,
264 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
269 unsigned long reg
, value
;
270 struct snd_soc_codec
*codec
= file
->private_data
;
273 buf_size
= min(count
, (sizeof(buf
)-1));
274 if (copy_from_user(buf
, user_buf
, buf_size
))
278 while (*start
== ' ')
280 reg
= simple_strtoul(start
, &start
, 16);
281 while (*start
== ' ')
283 ret
= kstrtoul(start
, 16, &value
);
287 /* Userspace has been fiddling around behind the kernel's back */
288 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
290 snd_soc_write(codec
, reg
, value
);
294 static const struct file_operations codec_reg_fops
= {
296 .read
= codec_reg_read_file
,
297 .write
= codec_reg_write_file
,
298 .llseek
= default_llseek
,
301 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
303 if (!component
->card
->debugfs_card_root
)
306 if (component
->debugfs_prefix
) {
309 name
= kasprintf(GFP_KERNEL
, "%s:%s",
310 component
->debugfs_prefix
, component
->name
);
312 component
->debugfs_root
= debugfs_create_dir(name
,
313 component
->card
->debugfs_card_root
);
317 component
->debugfs_root
= debugfs_create_dir(component
->name
,
318 component
->card
->debugfs_card_root
);
321 if (!component
->debugfs_root
) {
322 dev_warn(component
->dev
,
323 "ASoC: Failed to create component debugfs directory\n");
327 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
328 component
->debugfs_root
);
330 if (component
->init_debugfs
)
331 component
->init_debugfs(component
);
334 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
336 debugfs_remove_recursive(component
->debugfs_root
);
339 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
341 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
342 struct dentry
*debugfs_reg
;
344 debugfs_reg
= debugfs_create_file("codec_reg", 0644,
345 codec
->component
.debugfs_root
,
346 codec
, &codec_reg_fops
);
349 "ASoC: Failed to create codec register debugfs file\n");
352 static int codec_list_show(struct seq_file
*m
, void *v
)
354 struct snd_soc_codec
*codec
;
356 mutex_lock(&client_mutex
);
358 list_for_each_entry(codec
, &codec_list
, list
)
359 seq_printf(m
, "%s\n", codec
->component
.name
);
361 mutex_unlock(&client_mutex
);
365 DEFINE_SHOW_ATTRIBUTE(codec_list
);
367 static int dai_list_show(struct seq_file
*m
, void *v
)
369 struct snd_soc_component
*component
;
370 struct snd_soc_dai
*dai
;
372 mutex_lock(&client_mutex
);
374 list_for_each_entry(component
, &component_list
, list
)
375 list_for_each_entry(dai
, &component
->dai_list
, list
)
376 seq_printf(m
, "%s\n", dai
->name
);
378 mutex_unlock(&client_mutex
);
382 DEFINE_SHOW_ATTRIBUTE(dai_list
);
384 static int platform_list_show(struct seq_file
*m
, void *v
)
386 struct snd_soc_platform
*platform
;
388 mutex_lock(&client_mutex
);
390 list_for_each_entry(platform
, &platform_list
, list
)
391 seq_printf(m
, "%s\n", platform
->component
.name
);
393 mutex_unlock(&client_mutex
);
397 DEFINE_SHOW_ATTRIBUTE(platform_list
);
399 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
401 if (!snd_soc_debugfs_root
)
404 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
405 snd_soc_debugfs_root
);
406 if (!card
->debugfs_card_root
) {
408 "ASoC: Failed to create card debugfs directory\n");
412 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
413 card
->debugfs_card_root
,
415 if (!card
->debugfs_pop_time
)
417 "ASoC: Failed to create pop time debugfs file\n");
420 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
422 debugfs_remove_recursive(card
->debugfs_card_root
);
425 static void snd_soc_debugfs_init(void)
427 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
428 if (IS_ERR_OR_NULL(snd_soc_debugfs_root
)) {
429 pr_warn("ASoC: Failed to create debugfs directory\n");
430 snd_soc_debugfs_root
= NULL
;
434 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
436 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
438 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
440 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
442 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
443 &platform_list_fops
))
444 pr_warn("ASoC: Failed to create platform list debugfs file\n");
447 static void snd_soc_debugfs_exit(void)
449 debugfs_remove_recursive(snd_soc_debugfs_root
);
454 #define soc_init_codec_debugfs NULL
456 static inline void soc_init_component_debugfs(
457 struct snd_soc_component
*component
)
461 static inline void soc_cleanup_component_debugfs(
462 struct snd_soc_component
*component
)
466 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
470 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
474 static inline void snd_soc_debugfs_init(void)
478 static inline void snd_soc_debugfs_exit(void)
484 static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime
*rtd
,
485 struct snd_soc_component
*component
)
487 struct snd_soc_rtdcom_list
*rtdcom
;
488 struct snd_soc_rtdcom_list
*new_rtdcom
;
490 for_each_rtdcom(rtd
, rtdcom
) {
491 /* already connected */
492 if (rtdcom
->component
== component
)
496 new_rtdcom
= kmalloc(sizeof(*new_rtdcom
), GFP_KERNEL
);
500 new_rtdcom
->component
= component
;
501 INIT_LIST_HEAD(&new_rtdcom
->list
);
503 list_add_tail(&new_rtdcom
->list
, &rtd
->component_list
);
508 static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime
*rtd
)
510 struct snd_soc_rtdcom_list
*rtdcom1
, *rtdcom2
;
512 for_each_rtdcom_safe(rtd
, rtdcom1
, rtdcom2
)
515 INIT_LIST_HEAD(&rtd
->component_list
);
518 struct snd_soc_component
*snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime
*rtd
,
519 const char *driver_name
)
521 struct snd_soc_rtdcom_list
*rtdcom
;
526 for_each_rtdcom(rtd
, rtdcom
) {
527 const char *component_name
= rtdcom
->component
->driver
->name
;
532 if ((component_name
== driver_name
) ||
533 strcmp(component_name
, driver_name
) == 0)
534 return rtdcom
->component
;
539 EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup
);
541 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
542 const char *dai_link
, int stream
)
544 struct snd_soc_pcm_runtime
*rtd
;
546 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
547 if (rtd
->dai_link
->no_pcm
&&
548 !strcmp(rtd
->dai_link
->name
, dai_link
))
549 return rtd
->pcm
->streams
[stream
].substream
;
551 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
554 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
556 static const struct snd_soc_ops null_snd_soc_ops
;
558 static struct snd_soc_pcm_runtime
*soc_new_pcm_runtime(
559 struct snd_soc_card
*card
, struct snd_soc_dai_link
*dai_link
)
561 struct snd_soc_pcm_runtime
*rtd
;
563 rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
), GFP_KERNEL
);
567 INIT_LIST_HEAD(&rtd
->component_list
);
569 rtd
->dai_link
= dai_link
;
570 if (!rtd
->dai_link
->ops
)
571 rtd
->dai_link
->ops
= &null_snd_soc_ops
;
573 rtd
->codec_dais
= kzalloc(sizeof(struct snd_soc_dai
*) *
574 dai_link
->num_codecs
,
576 if (!rtd
->codec_dais
) {
584 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime
*rtd
)
586 kfree(rtd
->codec_dais
);
587 snd_soc_rtdcom_del_all(rtd
);
591 static void soc_add_pcm_runtime(struct snd_soc_card
*card
,
592 struct snd_soc_pcm_runtime
*rtd
)
594 list_add_tail(&rtd
->list
, &card
->rtd_list
);
595 rtd
->num
= card
->num_rtd
;
599 static void soc_remove_pcm_runtimes(struct snd_soc_card
*card
)
601 struct snd_soc_pcm_runtime
*rtd
, *_rtd
;
603 list_for_each_entry_safe(rtd
, _rtd
, &card
->rtd_list
, list
) {
604 list_del(&rtd
->list
);
605 soc_free_pcm_runtime(rtd
);
611 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
612 const char *dai_link
)
614 struct snd_soc_pcm_runtime
*rtd
;
616 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
617 if (!strcmp(rtd
->dai_link
->name
, dai_link
))
620 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
623 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
625 static void codec2codec_close_delayed_work(struct work_struct
*work
)
627 /* Currently nothing to do for c2c links
628 * Since c2c links are internal nodes in the DAPM graph and
629 * don't interface with the outside world or application layer
630 * we don't have to do any special handling on close.
634 #ifdef CONFIG_PM_SLEEP
635 /* powers down audio subsystem for suspend */
636 int snd_soc_suspend(struct device
*dev
)
638 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
639 struct snd_soc_component
*component
;
640 struct snd_soc_pcm_runtime
*rtd
;
643 /* If the card is not initialized yet there is nothing to do */
644 if (!card
->instantiated
)
647 /* Due to the resume being scheduled into a workqueue we could
648 * suspend before that's finished - wait for it to complete.
650 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
652 /* we're going to block userspace touching us until resume completes */
653 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
655 /* mute any active DACs */
656 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
658 if (rtd
->dai_link
->ignore_suspend
)
661 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
662 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
663 struct snd_soc_dai_driver
*drv
= dai
->driver
;
665 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
666 drv
->ops
->digital_mute(dai
, 1);
670 /* suspend all pcms */
671 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
672 if (rtd
->dai_link
->ignore_suspend
)
675 snd_pcm_suspend_all(rtd
->pcm
);
678 if (card
->suspend_pre
)
679 card
->suspend_pre(card
);
681 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
682 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
684 if (rtd
->dai_link
->ignore_suspend
)
687 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
688 cpu_dai
->driver
->suspend(cpu_dai
);
691 /* close any waiting streams */
692 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
693 flush_delayed_work(&rtd
->delayed_work
);
695 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
697 if (rtd
->dai_link
->ignore_suspend
)
700 snd_soc_dapm_stream_event(rtd
,
701 SNDRV_PCM_STREAM_PLAYBACK
,
702 SND_SOC_DAPM_STREAM_SUSPEND
);
704 snd_soc_dapm_stream_event(rtd
,
705 SNDRV_PCM_STREAM_CAPTURE
,
706 SND_SOC_DAPM_STREAM_SUSPEND
);
709 /* Recheck all endpoints too, their state is affected by suspend */
710 dapm_mark_endpoints_dirty(card
);
711 snd_soc_dapm_sync(&card
->dapm
);
713 /* suspend all COMPONENTs */
714 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
715 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
717 /* If there are paths active then the COMPONENT will be held with
718 * bias _ON and should not be suspended. */
719 if (!component
->suspended
) {
720 switch (snd_soc_dapm_get_bias_level(dapm
)) {
721 case SND_SOC_BIAS_STANDBY
:
723 * If the COMPONENT is capable of idle
724 * bias off then being in STANDBY
725 * means it's doing something,
726 * otherwise fall through.
728 if (dapm
->idle_bias_off
) {
729 dev_dbg(component
->dev
,
730 "ASoC: idle_bias_off CODEC on over suspend\n");
734 case SND_SOC_BIAS_OFF
:
735 if (component
->suspend
)
736 component
->suspend(component
);
737 component
->suspended
= 1;
738 if (component
->regmap
)
739 regcache_mark_dirty(component
->regmap
);
740 /* deactivate pins to sleep state */
741 pinctrl_pm_select_sleep_state(component
->dev
);
744 dev_dbg(component
->dev
,
745 "ASoC: COMPONENT is on over suspend\n");
751 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
752 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
754 if (rtd
->dai_link
->ignore_suspend
)
757 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
758 cpu_dai
->driver
->suspend(cpu_dai
);
760 /* deactivate pins to sleep state */
761 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
764 if (card
->suspend_post
)
765 card
->suspend_post(card
);
769 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
771 /* deferred resume work, so resume can complete before we finished
772 * setting our codec back up, which can be very slow on I2C
774 static void soc_resume_deferred(struct work_struct
*work
)
776 struct snd_soc_card
*card
=
777 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
778 struct snd_soc_pcm_runtime
*rtd
;
779 struct snd_soc_component
*component
;
782 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
783 * so userspace apps are blocked from touching us
786 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
788 /* Bring us up into D2 so that DAPM starts enabling things */
789 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
791 if (card
->resume_pre
)
792 card
->resume_pre(card
);
794 /* resume control bus DAIs */
795 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
796 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
798 if (rtd
->dai_link
->ignore_suspend
)
801 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
802 cpu_dai
->driver
->resume(cpu_dai
);
805 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
806 if (component
->suspended
) {
807 if (component
->resume
)
808 component
->resume(component
);
809 component
->suspended
= 0;
813 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
815 if (rtd
->dai_link
->ignore_suspend
)
818 snd_soc_dapm_stream_event(rtd
,
819 SNDRV_PCM_STREAM_PLAYBACK
,
820 SND_SOC_DAPM_STREAM_RESUME
);
822 snd_soc_dapm_stream_event(rtd
,
823 SNDRV_PCM_STREAM_CAPTURE
,
824 SND_SOC_DAPM_STREAM_RESUME
);
827 /* unmute any active DACs */
828 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
830 if (rtd
->dai_link
->ignore_suspend
)
833 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
834 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
835 struct snd_soc_dai_driver
*drv
= dai
->driver
;
837 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
838 drv
->ops
->digital_mute(dai
, 0);
842 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
843 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
845 if (rtd
->dai_link
->ignore_suspend
)
848 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
849 cpu_dai
->driver
->resume(cpu_dai
);
852 if (card
->resume_post
)
853 card
->resume_post(card
);
855 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
857 /* Recheck all endpoints too, their state is affected by suspend */
858 dapm_mark_endpoints_dirty(card
);
859 snd_soc_dapm_sync(&card
->dapm
);
861 /* userspace can access us now we are back as we were before */
862 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
865 /* powers up audio subsystem after a suspend */
866 int snd_soc_resume(struct device
*dev
)
868 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
869 bool bus_control
= false;
870 struct snd_soc_pcm_runtime
*rtd
;
872 /* If the card is not initialized yet there is nothing to do */
873 if (!card
->instantiated
)
876 /* activate pins from sleep state */
877 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
878 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
879 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
883 pinctrl_pm_select_default_state(cpu_dai
->dev
);
885 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
886 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
887 if (codec_dai
->active
)
888 pinctrl_pm_select_default_state(codec_dai
->dev
);
893 * DAIs that also act as the control bus master might have other drivers
894 * hanging off them so need to resume immediately. Other drivers don't
895 * have that problem and may take a substantial amount of time to resume
896 * due to I/O costs and anti-pop so handle them out of line.
898 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
899 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
900 bus_control
|= cpu_dai
->driver
->bus_control
;
903 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
904 soc_resume_deferred(&card
->deferred_resume_work
);
906 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
907 if (!schedule_work(&card
->deferred_resume_work
))
908 dev_err(dev
, "ASoC: resume work item may be lost\n");
913 EXPORT_SYMBOL_GPL(snd_soc_resume
);
915 #define snd_soc_suspend NULL
916 #define snd_soc_resume NULL
919 static const struct snd_soc_dai_ops null_dai_ops
= {
922 static struct snd_soc_component
*soc_find_component(
923 const struct device_node
*of_node
, const char *name
)
925 struct snd_soc_component
*component
;
927 lockdep_assert_held(&client_mutex
);
929 list_for_each_entry(component
, &component_list
, list
) {
931 if (component
->dev
->of_node
== of_node
)
933 } else if (strcmp(component
->name
, name
) == 0) {
942 * snd_soc_find_dai - Find a registered DAI
944 * @dlc: name of the DAI or the DAI driver and optional component info to match
946 * This function will search all registered components and their DAIs to
947 * find the DAI of the same name. The component's of_node and name
948 * should also match if being specified.
950 * Return: pointer of DAI, or NULL if not found.
952 struct snd_soc_dai
*snd_soc_find_dai(
953 const struct snd_soc_dai_link_component
*dlc
)
955 struct snd_soc_component
*component
;
956 struct snd_soc_dai
*dai
;
957 struct device_node
*component_of_node
;
959 lockdep_assert_held(&client_mutex
);
961 /* Find CPU DAI from registered DAIs*/
962 list_for_each_entry(component
, &component_list
, list
) {
963 component_of_node
= component
->dev
->of_node
;
964 if (!component_of_node
&& component
->dev
->parent
)
965 component_of_node
= component
->dev
->parent
->of_node
;
967 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
969 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
971 list_for_each_entry(dai
, &component
->dai_list
, list
) {
972 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
)
973 && (!dai
->driver
->name
974 || strcmp(dai
->driver
->name
, dlc
->dai_name
)))
983 EXPORT_SYMBOL_GPL(snd_soc_find_dai
);
987 * snd_soc_find_dai_link - Find a DAI link
990 * @id: DAI link ID to match
991 * @name: DAI link name to match, optional
992 * @stream_name: DAI link stream name to match, optional
994 * This function will search all existing DAI links of the soc card to
995 * find the link of the same ID. Since DAI links may not have their
996 * unique ID, so name and stream name should also match if being
999 * Return: pointer of DAI link, or NULL if not found.
1001 struct snd_soc_dai_link
*snd_soc_find_dai_link(struct snd_soc_card
*card
,
1002 int id
, const char *name
,
1003 const char *stream_name
)
1005 struct snd_soc_dai_link
*link
, *_link
;
1007 lockdep_assert_held(&client_mutex
);
1009 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1013 if (name
&& (!link
->name
|| strcmp(name
, link
->name
)))
1016 if (stream_name
&& (!link
->stream_name
1017 || strcmp(stream_name
, link
->stream_name
)))
1025 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link
);
1027 static bool soc_is_dai_link_bound(struct snd_soc_card
*card
,
1028 struct snd_soc_dai_link
*dai_link
)
1030 struct snd_soc_pcm_runtime
*rtd
;
1032 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
1033 if (rtd
->dai_link
== dai_link
)
1040 static int soc_bind_dai_link(struct snd_soc_card
*card
,
1041 struct snd_soc_dai_link
*dai_link
)
1043 struct snd_soc_pcm_runtime
*rtd
;
1044 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
1045 struct snd_soc_dai_link_component cpu_dai_component
;
1046 struct snd_soc_component
*component
;
1047 struct snd_soc_dai
**codec_dais
;
1048 struct snd_soc_platform
*platform
;
1049 struct device_node
*platform_of_node
;
1050 const char *platform_name
;
1053 dev_dbg(card
->dev
, "ASoC: binding %s\n", dai_link
->name
);
1055 if (soc_is_dai_link_bound(card
, dai_link
)) {
1056 dev_dbg(card
->dev
, "ASoC: dai link %s already bound\n",
1061 rtd
= soc_new_pcm_runtime(card
, dai_link
);
1065 cpu_dai_component
.name
= dai_link
->cpu_name
;
1066 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
1067 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
1068 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
1069 if (!rtd
->cpu_dai
) {
1070 dev_info(card
->dev
, "ASoC: CPU DAI %s not registered\n",
1071 dai_link
->cpu_dai_name
);
1074 snd_soc_rtdcom_add(rtd
, rtd
->cpu_dai
->component
);
1076 rtd
->num_codecs
= dai_link
->num_codecs
;
1078 /* Find CODEC from registered CODECs */
1079 codec_dais
= rtd
->codec_dais
;
1080 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1081 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
1082 if (!codec_dais
[i
]) {
1083 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
1084 codecs
[i
].dai_name
);
1087 snd_soc_rtdcom_add(rtd
, codec_dais
[i
]->component
);
1090 /* Single codec links expect codec and codec_dai in runtime data */
1091 rtd
->codec_dai
= codec_dais
[0];
1092 rtd
->codec
= rtd
->codec_dai
->codec
;
1094 /* if there's no platform we match on the empty platform */
1095 platform_name
= dai_link
->platform_name
;
1096 if (!platform_name
&& !dai_link
->platform_of_node
)
1097 platform_name
= "snd-soc-dummy";
1099 /* find one from the set of registered platforms */
1100 list_for_each_entry(component
, &component_list
, list
) {
1101 platform_of_node
= component
->dev
->of_node
;
1102 if (!platform_of_node
&& component
->dev
->parent
->of_node
)
1103 platform_of_node
= component
->dev
->parent
->of_node
;
1105 if (dai_link
->platform_of_node
) {
1106 if (platform_of_node
!= dai_link
->platform_of_node
)
1109 if (strcmp(component
->name
, platform_name
))
1113 snd_soc_rtdcom_add(rtd
, component
);
1116 /* find one from the set of registered platforms */
1117 list_for_each_entry(platform
, &platform_list
, list
) {
1118 platform_of_node
= platform
->dev
->of_node
;
1119 if (!platform_of_node
&& platform
->dev
->parent
->of_node
)
1120 platform_of_node
= platform
->dev
->parent
->of_node
;
1122 if (dai_link
->platform_of_node
) {
1123 if (platform_of_node
!= dai_link
->platform_of_node
)
1126 if (strcmp(platform
->component
.name
, platform_name
))
1130 rtd
->platform
= platform
;
1133 soc_add_pcm_runtime(card
, rtd
);
1137 soc_free_pcm_runtime(rtd
);
1138 return -EPROBE_DEFER
;
1141 static void soc_remove_component(struct snd_soc_component
*component
)
1143 if (!component
->card
)
1146 list_del(&component
->card_list
);
1148 if (component
->remove
)
1149 component
->remove(component
);
1151 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1153 soc_cleanup_component_debugfs(component
);
1154 component
->card
= NULL
;
1155 module_put(component
->dev
->driver
->owner
);
1158 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1162 if (dai
&& dai
->probed
&&
1163 dai
->driver
->remove_order
== order
) {
1164 if (dai
->driver
->remove
) {
1165 err
= dai
->driver
->remove(dai
);
1168 "ASoC: failed to remove %s: %d\n",
1175 static void soc_remove_link_dais(struct snd_soc_card
*card
,
1176 struct snd_soc_pcm_runtime
*rtd
, int order
)
1180 /* unregister the rtd device */
1181 if (rtd
->dev_registered
) {
1182 device_unregister(rtd
->dev
);
1183 rtd
->dev_registered
= 0;
1186 /* remove the CODEC DAI */
1187 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1188 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1190 soc_remove_dai(rtd
->cpu_dai
, order
);
1193 static void soc_remove_link_components(struct snd_soc_card
*card
,
1194 struct snd_soc_pcm_runtime
*rtd
, int order
)
1196 struct snd_soc_component
*component
;
1197 struct snd_soc_rtdcom_list
*rtdcom
;
1199 for_each_rtdcom(rtd
, rtdcom
) {
1200 component
= rtdcom
->component
;
1202 if (component
->driver
->remove_order
== order
)
1203 soc_remove_component(component
);
1207 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1210 struct snd_soc_pcm_runtime
*rtd
;
1211 struct snd_soc_dai_link
*link
, *_link
;
1213 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1215 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1216 soc_remove_link_dais(card
, rtd
, order
);
1219 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1221 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1222 soc_remove_link_components(card
, rtd
, order
);
1225 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1226 if (link
->dobj
.type
== SND_SOC_DOBJ_DAI_LINK
)
1227 dev_warn(card
->dev
, "Topology forgot to remove link %s?\n",
1230 list_del(&link
->list
);
1231 card
->num_dai_links
--;
1235 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
1236 struct snd_soc_dai_link
*dai_link
)
1238 /* Legacy codec/codec_dai link is a single entry in multicodec */
1239 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
1240 dai_link
->codec_dai_name
) {
1241 dai_link
->num_codecs
= 1;
1243 dai_link
->codecs
= devm_kzalloc(card
->dev
,
1244 sizeof(struct snd_soc_dai_link_component
),
1246 if (!dai_link
->codecs
)
1249 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
1250 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
1251 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
1254 if (!dai_link
->codecs
) {
1255 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
1262 static int soc_init_dai_link(struct snd_soc_card
*card
,
1263 struct snd_soc_dai_link
*link
)
1267 ret
= snd_soc_init_multicodec(card
, link
);
1269 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
1273 for (i
= 0; i
< link
->num_codecs
; i
++) {
1275 * Codec must be specified by 1 of name or OF node,
1276 * not both or neither.
1278 if (!!link
->codecs
[i
].name
==
1279 !!link
->codecs
[i
].of_node
) {
1280 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
1284 /* Codec DAI name must be specified */
1285 if (!link
->codecs
[i
].dai_name
) {
1286 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
1293 * Platform may be specified by either name or OF node, but
1294 * can be left unspecified, and a dummy platform will be used.
1296 if (link
->platform_name
&& link
->platform_of_node
) {
1298 "ASoC: Both platform name/of_node are set for %s\n",
1304 * CPU device may be specified by either name or OF node, but
1305 * can be left unspecified, and will be matched based on DAI
1308 if (link
->cpu_name
&& link
->cpu_of_node
) {
1310 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1315 * At least one of CPU DAI name or CPU device name/node must be
1318 if (!link
->cpu_dai_name
&&
1319 !(link
->cpu_name
|| link
->cpu_of_node
)) {
1321 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1329 void snd_soc_disconnect_sync(struct device
*dev
)
1331 struct snd_soc_component
*component
= snd_soc_lookup_component(dev
, NULL
);
1333 if (!component
|| !component
->card
)
1336 snd_card_disconnect_sync(component
->card
->snd_card
);
1338 EXPORT_SYMBOL_GPL(snd_soc_disconnect_sync
);
1341 * snd_soc_add_dai_link - Add a DAI link dynamically
1342 * @card: The ASoC card to which the DAI link is added
1343 * @dai_link: The new DAI link to add
1345 * This function adds a DAI link to the ASoC card's link list.
1347 * Note: Topology can use this API to add DAI links when probing the
1348 * topology component. And machine drivers can still define static
1349 * DAI links in dai_link array.
1351 int snd_soc_add_dai_link(struct snd_soc_card
*card
,
1352 struct snd_soc_dai_link
*dai_link
)
1354 if (dai_link
->dobj
.type
1355 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1356 dev_err(card
->dev
, "Invalid dai link type %d\n",
1357 dai_link
->dobj
.type
);
1361 lockdep_assert_held(&client_mutex
);
1362 /* Notify the machine driver for extra initialization
1363 * on the link created by topology.
1365 if (dai_link
->dobj
.type
&& card
->add_dai_link
)
1366 card
->add_dai_link(card
, dai_link
);
1368 list_add_tail(&dai_link
->list
, &card
->dai_link_list
);
1369 card
->num_dai_links
++;
1373 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link
);
1376 * snd_soc_remove_dai_link - Remove a DAI link from the list
1377 * @card: The ASoC card that owns the link
1378 * @dai_link: The DAI link to remove
1380 * This function removes a DAI link from the ASoC card's link list.
1382 * For DAI links previously added by topology, topology should
1383 * remove them by using the dobj embedded in the link.
1385 void snd_soc_remove_dai_link(struct snd_soc_card
*card
,
1386 struct snd_soc_dai_link
*dai_link
)
1388 struct snd_soc_dai_link
*link
, *_link
;
1390 if (dai_link
->dobj
.type
1391 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1392 dev_err(card
->dev
, "Invalid dai link type %d\n",
1393 dai_link
->dobj
.type
);
1397 lockdep_assert_held(&client_mutex
);
1398 /* Notify the machine driver for extra destruction
1399 * on the link created by topology.
1401 if (dai_link
->dobj
.type
&& card
->remove_dai_link
)
1402 card
->remove_dai_link(card
, dai_link
);
1404 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1405 if (link
== dai_link
) {
1406 list_del(&link
->list
);
1407 card
->num_dai_links
--;
1412 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link
);
1414 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1415 struct snd_soc_component
*component
)
1419 if (card
->codec_conf
== NULL
)
1422 for (i
= 0; i
< card
->num_configs
; i
++) {
1423 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1424 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1426 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1428 component
->name_prefix
= map
->name_prefix
;
1433 static int soc_probe_component(struct snd_soc_card
*card
,
1434 struct snd_soc_component
*component
)
1436 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1437 struct snd_soc_dai
*dai
;
1440 if (!strcmp(component
->name
, "snd-soc-dummy"))
1443 if (component
->card
) {
1444 if (component
->card
!= card
) {
1445 dev_err(component
->dev
,
1446 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1447 card
->name
, component
->card
->name
);
1453 if (!try_module_get(component
->dev
->driver
->owner
))
1456 component
->card
= card
;
1458 soc_set_name_prefix(card
, component
);
1460 soc_init_component_debugfs(component
);
1462 if (component
->driver
->dapm_widgets
) {
1463 ret
= snd_soc_dapm_new_controls(dapm
,
1464 component
->driver
->dapm_widgets
,
1465 component
->driver
->num_dapm_widgets
);
1468 dev_err(component
->dev
,
1469 "Failed to create new controls %d\n", ret
);
1474 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1475 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1477 dev_err(component
->dev
,
1478 "Failed to create DAI widgets %d\n", ret
);
1483 if (component
->probe
) {
1484 ret
= component
->probe(component
);
1486 dev_err(component
->dev
,
1487 "ASoC: failed to probe component %d\n", ret
);
1491 WARN(dapm
->idle_bias_off
&&
1492 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1493 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1497 /* machine specific init */
1498 if (component
->init
) {
1499 ret
= component
->init(component
);
1501 dev_err(component
->dev
,
1502 "Failed to do machine specific init %d\n", ret
);
1507 if (component
->driver
->controls
)
1508 snd_soc_add_component_controls(component
,
1509 component
->driver
->controls
,
1510 component
->driver
->num_controls
);
1511 if (component
->driver
->dapm_routes
)
1512 snd_soc_dapm_add_routes(dapm
,
1513 component
->driver
->dapm_routes
,
1514 component
->driver
->num_dapm_routes
);
1516 list_add(&dapm
->list
, &card
->dapm_list
);
1517 list_add(&component
->card_list
, &card
->component_dev_list
);
1522 soc_cleanup_component_debugfs(component
);
1523 component
->card
= NULL
;
1524 module_put(component
->dev
->driver
->owner
);
1529 static void rtd_release(struct device
*dev
)
1534 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1539 /* register the rtd device */
1540 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1543 device_initialize(rtd
->dev
);
1544 rtd
->dev
->parent
= rtd
->card
->dev
;
1545 rtd
->dev
->release
= rtd_release
;
1546 rtd
->dev
->groups
= soc_dev_attr_groups
;
1547 dev_set_name(rtd
->dev
, "%s", name
);
1548 dev_set_drvdata(rtd
->dev
, rtd
);
1549 mutex_init(&rtd
->pcm_mutex
);
1550 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1551 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1552 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1553 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1554 ret
= device_add(rtd
->dev
);
1556 /* calling put_device() here to free the rtd->dev */
1557 put_device(rtd
->dev
);
1558 dev_err(rtd
->card
->dev
,
1559 "ASoC: failed to register runtime device: %d\n", ret
);
1562 rtd
->dev_registered
= 1;
1566 static int soc_probe_link_components(struct snd_soc_card
*card
,
1567 struct snd_soc_pcm_runtime
*rtd
,
1570 struct snd_soc_component
*component
;
1571 struct snd_soc_rtdcom_list
*rtdcom
;
1574 for_each_rtdcom(rtd
, rtdcom
) {
1575 component
= rtdcom
->component
;
1577 if (component
->driver
->probe_order
== order
) {
1578 ret
= soc_probe_component(card
, component
);
1587 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1590 dai
->driver
->probe_order
!= order
)
1593 if (dai
->driver
->probe
) {
1594 int ret
= dai
->driver
->probe(dai
);
1596 dev_err(dai
->dev
, "ASoC: failed to probe DAI %s: %d\n",
1607 static int soc_link_dai_pcm_new(struct snd_soc_dai
**dais
, int num_dais
,
1608 struct snd_soc_pcm_runtime
*rtd
)
1612 for (i
= 0; i
< num_dais
; ++i
) {
1613 struct snd_soc_dai_driver
*drv
= dais
[i
]->driver
;
1615 if (!rtd
->dai_link
->no_pcm
&& drv
->pcm_new
)
1616 ret
= drv
->pcm_new(rtd
, dais
[i
]);
1618 dev_err(dais
[i
]->dev
,
1619 "ASoC: Failed to bind %s with pcm device\n",
1628 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1629 struct snd_soc_dai_link
*dai_link
,
1630 struct snd_soc_pcm_runtime
*rtd
)
1632 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1633 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1634 struct snd_soc_dapm_widget
*sink
, *source
;
1637 if (rtd
->num_codecs
> 1)
1638 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1640 /* link the DAI widgets */
1641 sink
= codec_dai
->playback_widget
;
1642 source
= cpu_dai
->capture_widget
;
1643 if (sink
&& source
) {
1644 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1645 dai_link
->num_params
,
1648 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1649 sink
->name
, source
->name
, ret
);
1654 sink
= cpu_dai
->playback_widget
;
1655 source
= codec_dai
->capture_widget
;
1656 if (sink
&& source
) {
1657 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1658 dai_link
->num_params
,
1661 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1662 sink
->name
, source
->name
, ret
);
1670 static int soc_probe_link_dais(struct snd_soc_card
*card
,
1671 struct snd_soc_pcm_runtime
*rtd
, int order
)
1673 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
1674 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1677 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1678 card
->name
, rtd
->num
, order
);
1680 /* set default power off timeout */
1681 rtd
->pmdown_time
= pmdown_time
;
1683 ret
= soc_probe_dai(cpu_dai
, order
);
1687 /* probe the CODEC DAI */
1688 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1689 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1694 /* complete DAI probe during last probe */
1695 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1698 /* do machine specific initialization */
1699 if (dai_link
->init
) {
1700 ret
= dai_link
->init(rtd
);
1702 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1703 dai_link
->name
, ret
);
1708 if (dai_link
->dai_fmt
)
1709 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1711 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1715 #ifdef CONFIG_DEBUG_FS
1716 /* add DPCM sysfs entries */
1717 if (dai_link
->dynamic
)
1718 soc_dpcm_debugfs_add(rtd
);
1721 if (cpu_dai
->driver
->compress_new
) {
1722 /*create compress_device"*/
1723 ret
= cpu_dai
->driver
->compress_new(rtd
, rtd
->num
);
1725 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1726 dai_link
->stream_name
);
1731 if (!dai_link
->params
) {
1732 /* create the pcm */
1733 ret
= soc_new_pcm(rtd
, rtd
->num
);
1735 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1736 dai_link
->stream_name
, ret
);
1739 ret
= soc_link_dai_pcm_new(&cpu_dai
, 1, rtd
);
1742 ret
= soc_link_dai_pcm_new(rtd
->codec_dais
,
1743 rtd
->num_codecs
, rtd
);
1747 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1748 codec2codec_close_delayed_work
);
1750 /* link the DAI widgets */
1751 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1760 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1762 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1763 struct snd_soc_component
*component
;
1765 struct device_node
*codec_of_node
;
1767 if (aux_dev
->codec_of_node
|| aux_dev
->codec_name
) {
1768 /* codecs, usually analog devices */
1769 name
= aux_dev
->codec_name
;
1770 codec_of_node
= aux_dev
->codec_of_node
;
1771 component
= soc_find_component(codec_of_node
, name
);
1774 name
= of_node_full_name(codec_of_node
);
1777 } else if (aux_dev
->name
) {
1778 /* generic components */
1779 name
= aux_dev
->name
;
1780 component
= soc_find_component(NULL
, name
);
1784 dev_err(card
->dev
, "ASoC: Invalid auxiliary device\n");
1788 component
->init
= aux_dev
->init
;
1789 list_add(&component
->card_aux_list
, &card
->aux_comp_list
);
1794 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1795 return -EPROBE_DEFER
;
1798 static int soc_probe_aux_devices(struct snd_soc_card
*card
)
1800 struct snd_soc_component
*comp
;
1804 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1806 list_for_each_entry(comp
, &card
->aux_comp_list
, card_aux_list
) {
1807 if (comp
->driver
->probe_order
== order
) {
1808 ret
= soc_probe_component(card
, comp
);
1811 "ASoC: failed to probe aux component %s %d\n",
1822 static void soc_remove_aux_devices(struct snd_soc_card
*card
)
1824 struct snd_soc_component
*comp
, *_comp
;
1827 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1829 list_for_each_entry_safe(comp
, _comp
,
1830 &card
->aux_comp_list
, card_aux_list
) {
1832 if (comp
->driver
->remove_order
== order
) {
1833 soc_remove_component(comp
);
1834 /* remove it from the card's aux_comp_list */
1835 list_del(&comp
->card_aux_list
);
1841 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1845 if (codec
->cache_init
)
1848 ret
= snd_soc_cache_init(codec
);
1851 "ASoC: Failed to set cache compression type: %d\n",
1855 codec
->cache_init
= 1;
1860 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1861 * @rtd: The runtime for which the DAI link format should be changed
1862 * @dai_fmt: The new DAI link format
1864 * This function updates the DAI link format for all DAIs connected to the DAI
1865 * link for the specified runtime.
1867 * Note: For setups with a static format set the dai_fmt field in the
1868 * corresponding snd_dai_link struct instead of using this function.
1870 * Returns 0 on success, otherwise a negative error code.
1872 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1873 unsigned int dai_fmt
)
1875 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1876 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1880 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1881 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1883 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1884 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1885 dev_warn(codec_dai
->dev
,
1886 "ASoC: Failed to set DAI format: %d\n", ret
);
1891 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1892 /* the component which has non_legacy_dai_naming is Codec */
1893 if (cpu_dai
->codec
||
1894 cpu_dai
->component
->driver
->non_legacy_dai_naming
) {
1895 unsigned int inv_dai_fmt
;
1897 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1898 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1899 case SND_SOC_DAIFMT_CBM_CFM
:
1900 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1902 case SND_SOC_DAIFMT_CBM_CFS
:
1903 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1905 case SND_SOC_DAIFMT_CBS_CFM
:
1906 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1908 case SND_SOC_DAIFMT_CBS_CFS
:
1909 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1913 dai_fmt
= inv_dai_fmt
;
1916 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1917 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1918 dev_warn(cpu_dai
->dev
,
1919 "ASoC: Failed to set DAI format: %d\n", ret
);
1925 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1929 /* Trim special characters, and replace '-' with '_' since '-' is used to
1930 * separate different DMI fields in the card long name. Only number and
1931 * alphabet characters and a few separator characters are kept.
1933 static void cleanup_dmi_name(char *name
)
1937 for (i
= 0; name
[i
]; i
++) {
1938 if (isalnum(name
[i
]) || (name
[i
] == '.')
1939 || (name
[i
] == '_'))
1940 name
[j
++] = name
[i
];
1941 else if (name
[i
] == '-')
1948 /* Check if a DMI field is valid, i.e. not containing any string
1949 * in the black list.
1951 static int is_dmi_valid(const char *field
)
1955 while (dmi_blacklist
[i
]) {
1956 if (strstr(field
, dmi_blacklist
[i
]))
1965 * snd_soc_set_dmi_name() - Register DMI names to card
1966 * @card: The card to register DMI names
1967 * @flavour: The flavour "differentiator" for the card amongst its peers.
1969 * An Intel machine driver may be used by many different devices but are
1970 * difficult for userspace to differentiate, since machine drivers ususally
1971 * use their own name as the card short name and leave the card long name
1972 * blank. To differentiate such devices and fix bugs due to lack of
1973 * device-specific configurations, this function allows DMI info to be used
1974 * as the sound card long name, in the format of
1975 * "vendor-product-version-board"
1976 * (Character '-' is used to separate different DMI fields here).
1977 * This will help the user space to load the device-specific Use Case Manager
1978 * (UCM) configurations for the card.
1980 * Possible card long names may be:
1981 * DellInc.-XPS139343-01-0310JH
1982 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
1983 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
1985 * This function also supports flavoring the card longname to provide
1986 * the extra differentiation, like "vendor-product-version-board-flavor".
1988 * We only keep number and alphabet characters and a few separator characters
1989 * in the card long name since UCM in the user space uses the card long names
1990 * as card configuration directory names and AudoConf cannot support special
1991 * charactors like SPACE.
1993 * Returns 0 on success, otherwise a negative error code.
1995 int snd_soc_set_dmi_name(struct snd_soc_card
*card
, const char *flavour
)
1997 const char *vendor
, *product
, *product_version
, *board
;
1998 size_t longname_buf_size
= sizeof(card
->snd_card
->longname
);
2001 if (card
->long_name
)
2002 return 0; /* long name already set by driver or from DMI */
2004 /* make up dmi long name as: vendor.product.version.board */
2005 vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
2006 if (!vendor
|| !is_dmi_valid(vendor
)) {
2007 dev_warn(card
->dev
, "ASoC: no DMI vendor name!\n");
2012 snprintf(card
->dmi_longname
, sizeof(card
->snd_card
->longname
),
2014 cleanup_dmi_name(card
->dmi_longname
);
2016 product
= dmi_get_system_info(DMI_PRODUCT_NAME
);
2017 if (product
&& is_dmi_valid(product
)) {
2018 len
= strlen(card
->dmi_longname
);
2019 snprintf(card
->dmi_longname
+ len
,
2020 longname_buf_size
- len
,
2023 len
++; /* skip the separator "-" */
2024 if (len
< longname_buf_size
)
2025 cleanup_dmi_name(card
->dmi_longname
+ len
);
2027 /* some vendors like Lenovo may only put a self-explanatory
2028 * name in the product version field
2030 product_version
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
2031 if (product_version
&& is_dmi_valid(product_version
)) {
2032 len
= strlen(card
->dmi_longname
);
2033 snprintf(card
->dmi_longname
+ len
,
2034 longname_buf_size
- len
,
2035 "-%s", product_version
);
2038 if (len
< longname_buf_size
)
2039 cleanup_dmi_name(card
->dmi_longname
+ len
);
2043 board
= dmi_get_system_info(DMI_BOARD_NAME
);
2044 if (board
&& is_dmi_valid(board
)) {
2045 len
= strlen(card
->dmi_longname
);
2046 snprintf(card
->dmi_longname
+ len
,
2047 longname_buf_size
- len
,
2051 if (len
< longname_buf_size
)
2052 cleanup_dmi_name(card
->dmi_longname
+ len
);
2053 } else if (!product
) {
2054 /* fall back to using legacy name */
2055 dev_warn(card
->dev
, "ASoC: no DMI board/product name!\n");
2059 /* Add flavour to dmi long name */
2061 len
= strlen(card
->dmi_longname
);
2062 snprintf(card
->dmi_longname
+ len
,
2063 longname_buf_size
- len
,
2067 if (len
< longname_buf_size
)
2068 cleanup_dmi_name(card
->dmi_longname
+ len
);
2071 /* set the card long name */
2072 card
->long_name
= card
->dmi_longname
;
2076 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name
);
2077 #endif /* CONFIG_DMI */
2079 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
2081 struct snd_soc_codec
*codec
;
2082 struct snd_soc_pcm_runtime
*rtd
;
2083 struct snd_soc_dai_link
*dai_link
;
2086 mutex_lock(&client_mutex
);
2087 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
2090 for (i
= 0; i
< card
->num_links
; i
++) {
2091 ret
= soc_bind_dai_link(card
, &card
->dai_link
[i
]);
2096 /* bind aux_devs too */
2097 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
2098 ret
= soc_bind_aux_dev(card
, i
);
2103 /* add predefined DAI links to the list */
2104 for (i
= 0; i
< card
->num_links
; i
++)
2105 snd_soc_add_dai_link(card
, card
->dai_link
+i
);
2107 /* initialize the register cache for each available codec */
2108 list_for_each_entry(codec
, &codec_list
, list
) {
2109 if (codec
->cache_init
)
2111 ret
= snd_soc_init_codec_cache(codec
);
2116 /* card bind complete so register a sound card */
2117 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
2118 card
->owner
, 0, &card
->snd_card
);
2121 "ASoC: can't create sound card for card %s: %d\n",
2126 soc_init_card_debugfs(card
);
2128 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
2129 card
->dapm
.dev
= card
->dev
;
2130 card
->dapm
.card
= card
;
2131 list_add(&card
->dapm
.list
, &card
->dapm_list
);
2133 #ifdef CONFIG_DEBUG_FS
2134 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
2137 #ifdef CONFIG_PM_SLEEP
2138 /* deferred resume work */
2139 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
2142 if (card
->dapm_widgets
)
2143 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
2144 card
->num_dapm_widgets
);
2146 if (card
->of_dapm_widgets
)
2147 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
2148 card
->num_of_dapm_widgets
);
2150 /* initialise the sound card only once */
2152 ret
= card
->probe(card
);
2154 goto card_probe_error
;
2157 /* probe all components used by DAI links on this card */
2158 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2160 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2161 ret
= soc_probe_link_components(card
, rtd
, order
);
2164 "ASoC: failed to instantiate card %d\n",
2171 /* probe auxiliary components */
2172 ret
= soc_probe_aux_devices(card
);
2176 /* Find new DAI links added during probing components and bind them.
2177 * Components with topology may bring new DAIs and DAI links.
2179 list_for_each_entry(dai_link
, &card
->dai_link_list
, list
) {
2180 if (soc_is_dai_link_bound(card
, dai_link
))
2183 ret
= soc_init_dai_link(card
, dai_link
);
2186 ret
= soc_bind_dai_link(card
, dai_link
);
2191 /* probe all DAI links on this card */
2192 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2194 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2195 ret
= soc_probe_link_dais(card
, rtd
, order
);
2198 "ASoC: failed to instantiate card %d\n",
2205 snd_soc_dapm_link_dai_widgets(card
);
2206 snd_soc_dapm_connect_dai_link_widgets(card
);
2209 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
2211 if (card
->dapm_routes
)
2212 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
2213 card
->num_dapm_routes
);
2215 if (card
->of_dapm_routes
)
2216 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
2217 card
->num_of_dapm_routes
);
2219 /* try to set some sane longname if DMI is available */
2220 snd_soc_set_dmi_name(card
, NULL
);
2222 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
2224 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
2225 "%s", card
->long_name
? card
->long_name
: card
->name
);
2226 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
2227 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
2228 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
2229 switch (card
->snd_card
->driver
[i
]) {
2235 if (!isalnum(card
->snd_card
->driver
[i
]))
2236 card
->snd_card
->driver
[i
] = '_';
2241 if (card
->late_probe
) {
2242 ret
= card
->late_probe(card
);
2244 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
2246 goto probe_aux_dev_err
;
2250 snd_soc_dapm_new_widgets(card
);
2252 ret
= snd_card_register(card
->snd_card
);
2254 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
2256 goto probe_aux_dev_err
;
2259 card
->instantiated
= 1;
2260 snd_soc_dapm_sync(&card
->dapm
);
2261 mutex_unlock(&card
->mutex
);
2262 mutex_unlock(&client_mutex
);
2267 soc_remove_aux_devices(card
);
2270 soc_remove_dai_links(card
);
2276 snd_soc_dapm_free(&card
->dapm
);
2277 soc_cleanup_card_debugfs(card
);
2278 snd_card_free(card
->snd_card
);
2281 soc_remove_pcm_runtimes(card
);
2282 mutex_unlock(&card
->mutex
);
2283 mutex_unlock(&client_mutex
);
2288 /* probes a new socdev */
2289 static int soc_probe(struct platform_device
*pdev
)
2291 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2294 * no card, so machine driver should be registering card
2295 * we should not be here in that case so ret error
2300 dev_warn(&pdev
->dev
,
2301 "ASoC: machine %s should use snd_soc_register_card()\n",
2304 /* Bodge while we unpick instantiation */
2305 card
->dev
= &pdev
->dev
;
2307 return snd_soc_register_card(card
);
2310 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2312 struct snd_soc_pcm_runtime
*rtd
;
2314 /* make sure any delayed work runs */
2315 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2316 flush_delayed_work(&rtd
->delayed_work
);
2318 /* free the ALSA card at first; this syncs with pending operations */
2319 snd_card_free(card
->snd_card
);
2321 /* remove and free each DAI */
2322 soc_remove_dai_links(card
);
2323 soc_remove_pcm_runtimes(card
);
2325 /* remove auxiliary devices */
2326 soc_remove_aux_devices(card
);
2328 snd_soc_dapm_free(&card
->dapm
);
2329 soc_cleanup_card_debugfs(card
);
2331 /* remove the card */
2338 /* removes a socdev */
2339 static int soc_remove(struct platform_device
*pdev
)
2341 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2343 snd_soc_unregister_card(card
);
2347 int snd_soc_poweroff(struct device
*dev
)
2349 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2350 struct snd_soc_pcm_runtime
*rtd
;
2352 if (!card
->instantiated
)
2355 /* Flush out pmdown_time work - we actually do want to run it
2356 * now, we're shutting down so no imminent restart. */
2357 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2358 flush_delayed_work(&rtd
->delayed_work
);
2360 snd_soc_dapm_shutdown(card
);
2362 /* deactivate pins to sleep state */
2363 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2364 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2367 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2368 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2369 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
2370 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2376 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2378 const struct dev_pm_ops snd_soc_pm_ops
= {
2379 .suspend
= snd_soc_suspend
,
2380 .resume
= snd_soc_resume
,
2381 .freeze
= snd_soc_suspend
,
2382 .thaw
= snd_soc_resume
,
2383 .poweroff
= snd_soc_poweroff
,
2384 .restore
= snd_soc_resume
,
2386 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2388 /* ASoC platform driver */
2389 static struct platform_driver soc_driver
= {
2391 .name
= "soc-audio",
2392 .pm
= &snd_soc_pm_ops
,
2395 .remove
= soc_remove
,
2399 * snd_soc_cnew - create new control
2400 * @_template: control template
2401 * @data: control private data
2402 * @long_name: control long name
2403 * @prefix: control name prefix
2405 * Create a new mixer control from a template control.
2407 * Returns 0 for success, else error.
2409 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2410 void *data
, const char *long_name
,
2413 struct snd_kcontrol_new
template;
2414 struct snd_kcontrol
*kcontrol
;
2417 memcpy(&template, _template
, sizeof(template));
2421 long_name
= template.name
;
2424 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2428 template.name
= name
;
2430 template.name
= long_name
;
2433 kcontrol
= snd_ctl_new1(&template, data
);
2439 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2441 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2442 const struct snd_kcontrol_new
*controls
, int num_controls
,
2443 const char *prefix
, void *data
)
2447 for (i
= 0; i
< num_controls
; i
++) {
2448 const struct snd_kcontrol_new
*control
= &controls
[i
];
2449 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2450 control
->name
, prefix
));
2452 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2453 control
->name
, err
);
2461 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2464 struct snd_card
*card
= soc_card
->snd_card
;
2465 struct snd_kcontrol
*kctl
;
2467 if (unlikely(!name
))
2470 list_for_each_entry(kctl
, &card
->controls
, list
)
2471 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2475 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2478 * snd_soc_add_component_controls - Add an array of controls to a component.
2480 * @component: Component to add controls to
2481 * @controls: Array of controls to add
2482 * @num_controls: Number of elements in the array
2484 * Return: 0 for success, else error.
2486 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2487 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2489 struct snd_card
*card
= component
->card
->snd_card
;
2491 return snd_soc_add_controls(card
, component
->dev
, controls
,
2492 num_controls
, component
->name_prefix
, component
);
2494 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2497 * snd_soc_add_codec_controls - add an array of controls to a codec.
2498 * Convenience function to add a list of controls. Many codecs were
2499 * duplicating this code.
2501 * @codec: codec to add controls to
2502 * @controls: array of controls to add
2503 * @num_controls: number of elements in the array
2505 * Return 0 for success, else error.
2507 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2508 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2510 return snd_soc_add_component_controls(&codec
->component
, controls
,
2513 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2516 * snd_soc_add_platform_controls - add an array of controls to a platform.
2517 * Convenience function to add a list of controls.
2519 * @platform: platform to add controls to
2520 * @controls: array of controls to add
2521 * @num_controls: number of elements in the array
2523 * Return 0 for success, else error.
2525 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2526 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2528 return snd_soc_add_component_controls(&platform
->component
, controls
,
2531 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2534 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2535 * Convenience function to add a list of controls.
2537 * @soc_card: SoC card to add controls to
2538 * @controls: array of controls to add
2539 * @num_controls: number of elements in the array
2541 * Return 0 for success, else error.
2543 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2544 const struct snd_kcontrol_new
*controls
, int num_controls
)
2546 struct snd_card
*card
= soc_card
->snd_card
;
2548 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2551 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2554 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2555 * Convienience function to add a list of controls.
2557 * @dai: DAI to add controls to
2558 * @controls: array of controls to add
2559 * @num_controls: number of elements in the array
2561 * Return 0 for success, else error.
2563 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2564 const struct snd_kcontrol_new
*controls
, int num_controls
)
2566 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2568 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2571 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2574 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2576 * @clk_id: DAI specific clock ID
2577 * @freq: new clock frequency in Hz
2578 * @dir: new clock direction - input/output.
2580 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2582 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2583 unsigned int freq
, int dir
)
2585 if (dai
->driver
->ops
->set_sysclk
)
2586 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2588 return snd_soc_component_set_sysclk(dai
->component
, clk_id
, 0,
2591 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2594 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2596 * @clk_id: DAI specific clock ID
2597 * @source: Source for the clock
2598 * @freq: new clock frequency in Hz
2599 * @dir: new clock direction - input/output.
2601 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2603 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2604 int source
, unsigned int freq
, int dir
)
2606 if (codec
->driver
->set_sysclk
)
2607 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2612 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2615 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2616 * @component: COMPONENT
2617 * @clk_id: DAI specific clock ID
2618 * @source: Source for the clock
2619 * @freq: new clock frequency in Hz
2620 * @dir: new clock direction - input/output.
2622 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2624 int snd_soc_component_set_sysclk(struct snd_soc_component
*component
, int clk_id
,
2625 int source
, unsigned int freq
, int dir
)
2627 /* will be removed */
2628 if (component
->set_sysclk
)
2629 return component
->set_sysclk(component
, clk_id
, source
,
2632 if (component
->driver
->set_sysclk
)
2633 return component
->driver
->set_sysclk(component
, clk_id
, source
,
2638 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk
);
2641 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2643 * @div_id: DAI specific clock divider ID
2644 * @div: new clock divisor.
2646 * Configures the clock dividers. This is used to derive the best DAI bit and
2647 * frame clocks from the system or master clock. It's best to set the DAI bit
2648 * and frame clocks as low as possible to save system power.
2650 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2651 int div_id
, int div
)
2653 if (dai
->driver
->ops
->set_clkdiv
)
2654 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2658 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2661 * snd_soc_dai_set_pll - configure DAI PLL.
2663 * @pll_id: DAI specific PLL ID
2664 * @source: DAI specific source for the PLL
2665 * @freq_in: PLL input clock frequency in Hz
2666 * @freq_out: requested PLL output clock frequency in Hz
2668 * Configures and enables PLL to generate output clock based on input clock.
2670 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2671 unsigned int freq_in
, unsigned int freq_out
)
2673 if (dai
->driver
->ops
->set_pll
)
2674 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2677 return snd_soc_component_set_pll(dai
->component
, pll_id
, source
,
2680 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2683 * snd_soc_codec_set_pll - configure codec PLL.
2685 * @pll_id: DAI specific PLL ID
2686 * @source: DAI specific source for the PLL
2687 * @freq_in: PLL input clock frequency in Hz
2688 * @freq_out: requested PLL output clock frequency in Hz
2690 * Configures and enables PLL to generate output clock based on input clock.
2692 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2693 unsigned int freq_in
, unsigned int freq_out
)
2695 if (codec
->driver
->set_pll
)
2696 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2701 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2704 * snd_soc_component_set_pll - configure component PLL.
2705 * @component: COMPONENT
2706 * @pll_id: DAI specific PLL ID
2707 * @source: DAI specific source for the PLL
2708 * @freq_in: PLL input clock frequency in Hz
2709 * @freq_out: requested PLL output clock frequency in Hz
2711 * Configures and enables PLL to generate output clock based on input clock.
2713 int snd_soc_component_set_pll(struct snd_soc_component
*component
, int pll_id
,
2714 int source
, unsigned int freq_in
,
2715 unsigned int freq_out
)
2717 /* will be removed */
2718 if (component
->set_pll
)
2719 return component
->set_pll(component
, pll_id
, source
,
2722 if (component
->driver
->set_pll
)
2723 return component
->driver
->set_pll(component
, pll_id
, source
,
2728 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll
);
2731 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2733 * @ratio: Ratio of BCLK to Sample rate.
2735 * Configures the DAI for a preset BCLK to sample rate ratio.
2737 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2739 if (dai
->driver
->ops
->set_bclk_ratio
)
2740 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2744 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2747 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2749 * @fmt: SND_SOC_DAIFMT_* format value.
2751 * Configures the DAI hardware format and clocking.
2753 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2755 if (dai
->driver
== NULL
)
2757 if (dai
->driver
->ops
->set_fmt
== NULL
)
2759 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2761 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2764 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2765 * @slots: Number of slots in use.
2766 * @tx_mask: bitmask representing active TX slots.
2767 * @rx_mask: bitmask representing active RX slots.
2769 * Generates the TDM tx and rx slot default masks for DAI.
2771 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2772 unsigned int *tx_mask
,
2773 unsigned int *rx_mask
)
2775 if (*tx_mask
|| *rx_mask
)
2781 *tx_mask
= (1 << slots
) - 1;
2782 *rx_mask
= (1 << slots
) - 1;
2788 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2789 * @dai: The DAI to configure
2790 * @tx_mask: bitmask representing active TX slots.
2791 * @rx_mask: bitmask representing active RX slots.
2792 * @slots: Number of slots in use.
2793 * @slot_width: Width in bits for each slot.
2795 * This function configures the specified DAI for TDM operation. @slot contains
2796 * the total number of slots of the TDM stream and @slot_with the width of each
2797 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2798 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2799 * DAI should write to or read from. If a bit is set the corresponding slot is
2800 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2801 * the first slot, bit 1 to the second slot and so on. The first active slot
2802 * maps to the first channel of the DAI, the second active slot to the second
2803 * channel and so on.
2805 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2806 * @rx_mask and @slot_width will be ignored.
2808 * Returns 0 on success, a negative error code otherwise.
2810 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2811 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2813 if (dai
->driver
->ops
->xlate_tdm_slot_mask
)
2814 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2815 &tx_mask
, &rx_mask
);
2817 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2819 dai
->tx_mask
= tx_mask
;
2820 dai
->rx_mask
= rx_mask
;
2822 if (dai
->driver
->ops
->set_tdm_slot
)
2823 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2828 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2831 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2833 * @tx_num: how many TX channels
2834 * @tx_slot: pointer to an array which imply the TX slot number channel
2836 * @rx_num: how many RX channels
2837 * @rx_slot: pointer to an array which imply the RX slot number channel
2840 * configure the relationship between channel number and TDM slot number.
2842 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2843 unsigned int tx_num
, unsigned int *tx_slot
,
2844 unsigned int rx_num
, unsigned int *rx_slot
)
2846 if (dai
->driver
->ops
->set_channel_map
)
2847 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2852 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2855 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2857 * @tristate: tristate enable
2859 * Tristates the DAI so that others can use it.
2861 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2863 if (dai
->driver
->ops
->set_tristate
)
2864 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2868 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2871 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2873 * @mute: mute enable
2874 * @direction: stream to mute
2876 * Mutes the DAI DAC.
2878 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2884 if (dai
->driver
->ops
->mute_stream
)
2885 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2886 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2887 dai
->driver
->ops
->digital_mute
)
2888 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2892 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2895 * snd_soc_register_card - Register a card with the ASoC core
2897 * @card: Card to register
2900 int snd_soc_register_card(struct snd_soc_card
*card
)
2903 struct snd_soc_pcm_runtime
*rtd
;
2905 if (!card
->name
|| !card
->dev
)
2908 for (i
= 0; i
< card
->num_links
; i
++) {
2909 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2911 ret
= soc_init_dai_link(card
, link
);
2913 dev_err(card
->dev
, "ASoC: failed to init link %s\n",
2919 dev_set_drvdata(card
->dev
, card
);
2921 snd_soc_initialize_card_lists(card
);
2923 INIT_LIST_HEAD(&card
->dai_link_list
);
2924 card
->num_dai_links
= 0;
2926 INIT_LIST_HEAD(&card
->rtd_list
);
2929 INIT_LIST_HEAD(&card
->dapm_dirty
);
2930 INIT_LIST_HEAD(&card
->dobj_list
);
2931 card
->instantiated
= 0;
2932 mutex_init(&card
->mutex
);
2933 mutex_init(&card
->dapm_mutex
);
2935 ret
= snd_soc_instantiate_card(card
);
2939 /* deactivate pins to sleep state */
2940 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2941 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2944 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2945 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2946 if (!codec_dai
->active
)
2947 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2950 if (!cpu_dai
->active
)
2951 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2956 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2959 * snd_soc_unregister_card - Unregister a card with the ASoC core
2961 * @card: Card to unregister
2964 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2966 if (card
->instantiated
) {
2967 card
->instantiated
= false;
2968 snd_soc_dapm_shutdown(card
);
2969 soc_cleanup_card_resources(card
);
2970 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2975 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2978 * Simplify DAI link configuration by removing ".-1" from device names
2979 * and sanitizing names.
2981 static char *fmt_single_name(struct device
*dev
, int *id
)
2983 char *found
, name
[NAME_SIZE
];
2986 if (dev_name(dev
) == NULL
)
2989 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2991 /* are we a "%s.%d" name (platform and SPI components) */
2992 found
= strstr(name
, dev
->driver
->name
);
2995 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2997 /* discard ID from name if ID == -1 */
2999 found
[strlen(dev
->driver
->name
)] = '\0';
3003 /* I2C component devices are named "bus-addr" */
3004 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3005 char tmp
[NAME_SIZE
];
3007 /* create unique ID number from I2C addr and bus */
3008 *id
= ((id1
& 0xffff) << 16) + id2
;
3010 /* sanitize component name for DAI link creation */
3011 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3012 strlcpy(name
, tmp
, NAME_SIZE
);
3017 return kstrdup(name
, GFP_KERNEL
);
3021 * Simplify DAI link naming for single devices with multiple DAIs by removing
3022 * any ".-1" and using the DAI name (instead of device name).
3024 static inline char *fmt_multiple_name(struct device
*dev
,
3025 struct snd_soc_dai_driver
*dai_drv
)
3027 if (dai_drv
->name
== NULL
) {
3029 "ASoC: error - multiple DAI %s registered with no name\n",
3034 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3038 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3040 * @component: The component for which the DAIs should be unregistered
3042 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
3044 struct snd_soc_dai
*dai
, *_dai
;
3046 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3047 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3049 list_del(&dai
->list
);
3055 /* Create a DAI and add it to the component's DAI list */
3056 static struct snd_soc_dai
*soc_add_dai(struct snd_soc_component
*component
,
3057 struct snd_soc_dai_driver
*dai_drv
,
3058 bool legacy_dai_naming
)
3060 struct device
*dev
= component
->dev
;
3061 struct snd_soc_dai
*dai
;
3063 dev_dbg(dev
, "ASoC: dynamically register DAI %s\n", dev_name(dev
));
3065 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3070 * Back in the old days when we still had component-less DAIs,
3071 * instead of having a static name, component-less DAIs would
3072 * inherit the name of the parent device so it is possible to
3073 * register multiple instances of the DAI. We still need to keep
3074 * the same naming style even though those DAIs are not
3075 * component-less anymore.
3077 if (legacy_dai_naming
&&
3078 (dai_drv
->id
== 0 || dai_drv
->name
== NULL
)) {
3079 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3081 dai
->name
= fmt_multiple_name(dev
, dai_drv
);
3083 dai
->id
= dai_drv
->id
;
3085 dai
->id
= component
->num_dai
;
3087 if (dai
->name
== NULL
) {
3092 dai
->component
= component
;
3094 dai
->driver
= dai_drv
;
3095 if (!dai
->driver
->ops
)
3096 dai
->driver
->ops
= &null_dai_ops
;
3098 list_add_tail(&dai
->list
, &component
->dai_list
);
3099 component
->num_dai
++;
3101 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3106 * snd_soc_register_dais - Register a DAI with the ASoC core
3108 * @component: The component the DAIs are registered for
3109 * @dai_drv: DAI driver to use for the DAIs
3110 * @count: Number of DAIs
3111 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3114 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3115 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
3116 bool legacy_dai_naming
)
3118 struct device
*dev
= component
->dev
;
3119 struct snd_soc_dai
*dai
;
3123 dev_dbg(dev
, "ASoC: dai register %s #%zu\n", dev_name(dev
), count
);
3125 for (i
= 0; i
< count
; i
++) {
3127 dai
= soc_add_dai(component
, dai_drv
+ i
,
3128 count
== 1 && legacy_dai_naming
);
3138 snd_soc_unregister_dais(component
);
3144 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3146 * @component: The component the DAIs are registered for
3147 * @dai_drv: DAI driver to use for the DAI
3149 * Topology can use this API to register DAIs when probing a component.
3150 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3151 * will be freed in the component cleanup.
3153 int snd_soc_register_dai(struct snd_soc_component
*component
,
3154 struct snd_soc_dai_driver
*dai_drv
)
3156 struct snd_soc_dapm_context
*dapm
=
3157 snd_soc_component_get_dapm(component
);
3158 struct snd_soc_dai
*dai
;
3161 if (dai_drv
->dobj
.type
!= SND_SOC_DOBJ_PCM
) {
3162 dev_err(component
->dev
, "Invalid dai type %d\n",
3163 dai_drv
->dobj
.type
);
3167 lockdep_assert_held(&client_mutex
);
3168 dai
= soc_add_dai(component
, dai_drv
, false);
3172 /* Create the DAI widgets here. After adding DAIs, topology may
3173 * also add routes that need these widgets as source or sink.
3175 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
3177 dev_err(component
->dev
,
3178 "Failed to create DAI widgets %d\n", ret
);
3183 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3185 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
3186 enum snd_soc_dapm_type type
, int subseq
)
3188 struct snd_soc_component
*component
= dapm
->component
;
3190 component
->driver
->seq_notifier(component
, type
, subseq
);
3193 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
3196 struct snd_soc_component
*component
= dapm
->component
;
3198 return component
->driver
->stream_event(component
, event
);
3201 static int snd_soc_component_drv_pcm_new(struct snd_soc_component
*component
,
3202 struct snd_soc_pcm_runtime
*rtd
)
3204 if (component
->driver
->pcm_new
)
3205 return component
->driver
->pcm_new(rtd
);
3210 static void snd_soc_component_drv_pcm_free(struct snd_soc_component
*component
,
3211 struct snd_pcm
*pcm
)
3213 if (component
->driver
->pcm_free
)
3214 component
->driver
->pcm_free(pcm
);
3217 static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3218 enum snd_soc_bias_level level
)
3220 struct snd_soc_component
*component
= dapm
->component
;
3222 return component
->driver
->set_bias_level(component
, level
);
3225 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
3226 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
3228 struct snd_soc_dapm_context
*dapm
;
3230 component
->name
= fmt_single_name(dev
, &component
->id
);
3231 if (!component
->name
) {
3232 dev_err(dev
, "ASoC: Failed to allocate name\n");
3236 component
->dev
= dev
;
3237 component
->driver
= driver
;
3238 component
->probe
= component
->driver
->probe
;
3239 component
->remove
= component
->driver
->remove
;
3240 component
->suspend
= component
->driver
->suspend
;
3241 component
->resume
= component
->driver
->resume
;
3242 component
->set_sysclk
= component
->driver
->set_sysclk
;
3243 component
->set_pll
= component
->driver
->set_pll
;
3244 component
->set_jack
= component
->driver
->set_jack
;
3245 component
->pcm_new
= snd_soc_component_drv_pcm_new
;
3246 component
->pcm_free
= snd_soc_component_drv_pcm_free
;
3248 dapm
= snd_soc_component_get_dapm(component
);
3250 dapm
->component
= component
;
3251 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
3252 dapm
->idle_bias_off
= !driver
->idle_bias_on
;
3253 dapm
->suspend_bias_off
= driver
->suspend_bias_off
;
3254 if (driver
->seq_notifier
)
3255 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
3256 if (driver
->stream_event
)
3257 dapm
->stream_event
= snd_soc_component_stream_event
;
3258 if (driver
->set_bias_level
)
3259 dapm
->set_bias_level
= snd_soc_component_set_bias_level
;
3261 INIT_LIST_HEAD(&component
->dai_list
);
3262 mutex_init(&component
->io_mutex
);
3267 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
3269 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
3271 /* Errors are legitimate for non-integer byte multiples */
3273 component
->val_bytes
= val_bytes
;
3276 #ifdef CONFIG_REGMAP
3279 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3280 * @component: The component for which to initialize the regmap instance
3281 * @regmap: The regmap instance that should be used by the component
3283 * This function allows deferred assignment of the regmap instance that is
3284 * associated with the component. Only use this if the regmap instance is not
3285 * yet ready when the component is registered. The function must also be called
3286 * before the first IO attempt of the component.
3288 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
3289 struct regmap
*regmap
)
3291 component
->regmap
= regmap
;
3292 snd_soc_component_setup_regmap(component
);
3294 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
3297 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3298 * @component: The component for which to de-initialize the regmap instance
3300 * Calls regmap_exit() on the regmap instance associated to the component and
3301 * removes the regmap instance from the component.
3303 * This function should only be used if snd_soc_component_init_regmap() was used
3304 * to initialize the regmap instance.
3306 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
3308 regmap_exit(component
->regmap
);
3309 component
->regmap
= NULL
;
3311 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
3315 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
3317 if (!component
->write
&& !component
->read
) {
3318 if (!component
->regmap
)
3319 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
3320 if (component
->regmap
)
3321 snd_soc_component_setup_regmap(component
);
3324 list_add(&component
->list
, &component_list
);
3325 INIT_LIST_HEAD(&component
->dobj_list
);
3328 static void snd_soc_component_add(struct snd_soc_component
*component
)
3330 mutex_lock(&client_mutex
);
3331 snd_soc_component_add_unlocked(component
);
3332 mutex_unlock(&client_mutex
);
3335 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
3337 snd_soc_unregister_dais(component
);
3338 kfree(component
->name
);
3341 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
3343 struct snd_soc_card
*card
= component
->card
;
3346 snd_soc_unregister_card(card
);
3348 list_del(&component
->list
);
3351 #define ENDIANNESS_MAP(name) \
3352 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
3353 static u64 endianness_format_map
[] = {
3354 ENDIANNESS_MAP(S16_
),
3355 ENDIANNESS_MAP(U16_
),
3356 ENDIANNESS_MAP(S24_
),
3357 ENDIANNESS_MAP(U24_
),
3358 ENDIANNESS_MAP(S32_
),
3359 ENDIANNESS_MAP(U32_
),
3360 ENDIANNESS_MAP(S24_3
),
3361 ENDIANNESS_MAP(U24_3
),
3362 ENDIANNESS_MAP(S20_3
),
3363 ENDIANNESS_MAP(U20_3
),
3364 ENDIANNESS_MAP(S18_3
),
3365 ENDIANNESS_MAP(U18_3
),
3366 ENDIANNESS_MAP(FLOAT_
),
3367 ENDIANNESS_MAP(FLOAT64_
),
3368 ENDIANNESS_MAP(IEC958_SUBFRAME_
),
3372 * Fix up the DAI formats for endianness: codecs don't actually see
3373 * the endianness of the data but we're using the CPU format
3374 * definitions which do need to include endianness so we ensure that
3375 * codec DAIs always have both big and little endian variants set.
3377 static void convert_endianness_formats(struct snd_soc_pcm_stream
*stream
)
3381 for (i
= 0; i
< ARRAY_SIZE(endianness_format_map
); i
++)
3382 if (stream
->formats
& endianness_format_map
[i
])
3383 stream
->formats
|= endianness_format_map
[i
];
3386 int snd_soc_add_component(struct device
*dev
,
3387 struct snd_soc_component
*component
,
3388 const struct snd_soc_component_driver
*component_driver
,
3389 struct snd_soc_dai_driver
*dai_drv
,
3395 ret
= snd_soc_component_initialize(component
, component_driver
, dev
);
3399 component
->ignore_pmdown_time
= true;
3400 component
->registered_as_component
= true;
3402 if (component_driver
->endianness
) {
3403 for (i
= 0; i
< num_dai
; i
++) {
3404 convert_endianness_formats(&dai_drv
[i
].playback
);
3405 convert_endianness_formats(&dai_drv
[i
].capture
);
3409 ret
= snd_soc_register_dais(component
, dai_drv
, num_dai
,
3410 !component_driver
->non_legacy_dai_naming
);
3412 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3416 snd_soc_component_add(component
);
3421 snd_soc_component_cleanup(component
);
3425 EXPORT_SYMBOL_GPL(snd_soc_add_component
);
3427 int snd_soc_register_component(struct device
*dev
,
3428 const struct snd_soc_component_driver
*component_driver
,
3429 struct snd_soc_dai_driver
*dai_drv
,
3432 struct snd_soc_component
*component
;
3434 component
= devm_kzalloc(dev
, sizeof(*component
), GFP_KERNEL
);
3438 return snd_soc_add_component(dev
, component
, component_driver
,
3441 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
3444 * snd_soc_unregister_component - Unregister all related component
3445 * from the ASoC core
3447 * @dev: The device to unregister
3449 static int __snd_soc_unregister_component(struct device
*dev
)
3451 struct snd_soc_component
*component
;
3454 mutex_lock(&client_mutex
);
3455 list_for_each_entry(component
, &component_list
, list
) {
3456 if (dev
!= component
->dev
||
3457 !component
->registered_as_component
)
3460 snd_soc_tplg_component_remove(component
, SND_SOC_TPLG_INDEX_ALL
);
3461 snd_soc_component_del_unlocked(component
);
3465 mutex_unlock(&client_mutex
);
3468 snd_soc_component_cleanup(component
);
3474 void snd_soc_unregister_component(struct device
*dev
)
3476 while (__snd_soc_unregister_component(dev
));
3478 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
3480 struct snd_soc_component
*snd_soc_lookup_component(struct device
*dev
,
3481 const char *driver_name
)
3483 struct snd_soc_component
*component
;
3484 struct snd_soc_component
*ret
;
3487 mutex_lock(&client_mutex
);
3488 list_for_each_entry(component
, &component_list
, list
) {
3489 if (dev
!= component
->dev
)
3493 (driver_name
!= component
->driver
->name
) &&
3494 (strcmp(component
->driver
->name
, driver_name
) != 0))
3500 mutex_unlock(&client_mutex
);
3504 EXPORT_SYMBOL_GPL(snd_soc_lookup_component
);
3506 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
3508 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3510 return platform
->driver
->probe(platform
);
3513 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
3515 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3517 platform
->driver
->remove(platform
);
3520 static int snd_soc_platform_drv_pcm_new(struct snd_soc_component
*component
,
3521 struct snd_soc_pcm_runtime
*rtd
)
3523 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3525 if (platform
->driver
->pcm_new
)
3526 return platform
->driver
->pcm_new(rtd
);
3531 static void snd_soc_platform_drv_pcm_free(struct snd_soc_component
*component
,
3532 struct snd_pcm
*pcm
)
3534 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3536 if (platform
->driver
->pcm_free
)
3537 platform
->driver
->pcm_free(pcm
);
3541 * snd_soc_add_platform - Add a platform to the ASoC core
3542 * @dev: The parent device for the platform
3543 * @platform: The platform to add
3544 * @platform_drv: The driver for the platform
3546 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3547 const struct snd_soc_platform_driver
*platform_drv
)
3551 ret
= snd_soc_component_initialize(&platform
->component
,
3552 &platform_drv
->component_driver
, dev
);
3556 platform
->dev
= dev
;
3557 platform
->driver
= platform_drv
;
3559 if (platform_drv
->probe
)
3560 platform
->component
.probe
= snd_soc_platform_drv_probe
;
3561 if (platform_drv
->remove
)
3562 platform
->component
.remove
= snd_soc_platform_drv_remove
;
3563 if (platform_drv
->pcm_new
)
3564 platform
->component
.pcm_new
= snd_soc_platform_drv_pcm_new
;
3565 if (platform_drv
->pcm_free
)
3566 platform
->component
.pcm_free
= snd_soc_platform_drv_pcm_free
;
3568 #ifdef CONFIG_DEBUG_FS
3569 platform
->component
.debugfs_prefix
= "platform";
3572 mutex_lock(&client_mutex
);
3573 snd_soc_component_add_unlocked(&platform
->component
);
3574 list_add(&platform
->list
, &platform_list
);
3575 mutex_unlock(&client_mutex
);
3577 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
3578 platform
->component
.name
);
3582 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3585 * snd_soc_register_platform - Register a platform with the ASoC core
3587 * @dev: The device for the platform
3588 * @platform_drv: The driver for the platform
3590 int snd_soc_register_platform(struct device
*dev
,
3591 const struct snd_soc_platform_driver
*platform_drv
)
3593 struct snd_soc_platform
*platform
;
3596 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3598 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3599 if (platform
== NULL
)
3602 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3608 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3611 * snd_soc_remove_platform - Remove a platform from the ASoC core
3612 * @platform: the platform to remove
3614 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
3617 mutex_lock(&client_mutex
);
3618 list_del(&platform
->list
);
3619 snd_soc_component_del_unlocked(&platform
->component
);
3620 mutex_unlock(&client_mutex
);
3622 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
3623 platform
->component
.name
);
3625 snd_soc_component_cleanup(&platform
->component
);
3627 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
3629 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
3631 struct snd_soc_platform
*platform
;
3633 mutex_lock(&client_mutex
);
3634 list_for_each_entry(platform
, &platform_list
, list
) {
3635 if (dev
== platform
->dev
) {
3636 mutex_unlock(&client_mutex
);
3640 mutex_unlock(&client_mutex
);
3644 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
3647 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3649 * @dev: platform to unregister
3651 void snd_soc_unregister_platform(struct device
*dev
)
3653 struct snd_soc_platform
*platform
;
3655 platform
= snd_soc_lookup_platform(dev
);
3659 snd_soc_remove_platform(platform
);
3662 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3664 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
3666 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3668 return codec
->driver
->probe(codec
);
3671 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
3673 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3675 codec
->driver
->remove(codec
);
3678 static int snd_soc_codec_drv_suspend(struct snd_soc_component
*component
)
3680 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3682 return codec
->driver
->suspend(codec
);
3685 static int snd_soc_codec_drv_resume(struct snd_soc_component
*component
)
3687 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3689 return codec
->driver
->resume(codec
);
3692 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3693 unsigned int reg
, unsigned int val
)
3695 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3697 return codec
->driver
->write(codec
, reg
, val
);
3700 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3701 unsigned int reg
, unsigned int *val
)
3703 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3705 *val
= codec
->driver
->read(codec
, reg
);
3710 static int snd_soc_codec_set_sysclk_(struct snd_soc_component
*component
,
3711 int clk_id
, int source
, unsigned int freq
, int dir
)
3713 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3715 return snd_soc_codec_set_sysclk(codec
, clk_id
, source
, freq
, dir
);
3718 static int snd_soc_codec_set_pll_(struct snd_soc_component
*component
,
3719 int pll_id
, int source
, unsigned int freq_in
,
3720 unsigned int freq_out
)
3722 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3724 return snd_soc_codec_set_pll(codec
, pll_id
, source
, freq_in
, freq_out
);
3727 static int snd_soc_codec_set_jack_(struct snd_soc_component
*component
,
3728 struct snd_soc_jack
*jack
, void *data
)
3730 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3732 return snd_soc_codec_set_jack(codec
, jack
, data
);
3735 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3736 enum snd_soc_bias_level level
)
3738 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3740 return codec
->driver
->set_bias_level(codec
, level
);
3744 * snd_soc_register_codec - Register a codec with the ASoC core
3746 * @dev: The parent device for this codec
3747 * @codec_drv: Codec driver
3748 * @dai_drv: The associated DAI driver
3749 * @num_dai: Number of DAIs
3751 int snd_soc_register_codec(struct device
*dev
,
3752 const struct snd_soc_codec_driver
*codec_drv
,
3753 struct snd_soc_dai_driver
*dai_drv
,
3756 struct snd_soc_dapm_context
*dapm
;
3757 struct snd_soc_codec
*codec
;
3758 struct snd_soc_dai
*dai
;
3761 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3763 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3767 codec
->component
.codec
= codec
;
3769 ret
= snd_soc_component_initialize(&codec
->component
,
3770 &codec_drv
->component_driver
, dev
);
3774 if (codec_drv
->probe
)
3775 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3776 if (codec_drv
->remove
)
3777 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3778 if (codec_drv
->suspend
)
3779 codec
->component
.suspend
= snd_soc_codec_drv_suspend
;
3780 if (codec_drv
->resume
)
3781 codec
->component
.resume
= snd_soc_codec_drv_resume
;
3782 if (codec_drv
->write
)
3783 codec
->component
.write
= snd_soc_codec_drv_write
;
3784 if (codec_drv
->read
)
3785 codec
->component
.read
= snd_soc_codec_drv_read
;
3786 if (codec_drv
->set_sysclk
)
3787 codec
->component
.set_sysclk
= snd_soc_codec_set_sysclk_
;
3788 if (codec_drv
->set_pll
)
3789 codec
->component
.set_pll
= snd_soc_codec_set_pll_
;
3790 if (codec_drv
->set_jack
)
3791 codec
->component
.set_jack
= snd_soc_codec_set_jack_
;
3792 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3794 dapm
= snd_soc_codec_get_dapm(codec
);
3795 dapm
->idle_bias_off
= codec_drv
->idle_bias_off
;
3796 dapm
->suspend_bias_off
= codec_drv
->suspend_bias_off
;
3797 if (codec_drv
->seq_notifier
)
3798 dapm
->seq_notifier
= codec_drv
->seq_notifier
;
3799 if (codec_drv
->set_bias_level
)
3800 dapm
->set_bias_level
= snd_soc_codec_set_bias_level
;
3802 codec
->driver
= codec_drv
;
3803 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3805 #ifdef CONFIG_DEBUG_FS
3806 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3807 codec
->component
.debugfs_prefix
= "codec";
3810 if (codec_drv
->get_regmap
)
3811 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3813 for (i
= 0; i
< num_dai
; i
++) {
3814 convert_endianness_formats(&dai_drv
[i
].playback
);
3815 convert_endianness_formats(&dai_drv
[i
].capture
);
3818 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3820 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3824 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3827 mutex_lock(&client_mutex
);
3828 snd_soc_component_add_unlocked(&codec
->component
);
3829 list_add(&codec
->list
, &codec_list
);
3830 mutex_unlock(&client_mutex
);
3832 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3833 codec
->component
.name
);
3837 snd_soc_component_cleanup(&codec
->component
);
3842 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3845 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3847 * @dev: codec to unregister
3849 void snd_soc_unregister_codec(struct device
*dev
)
3851 struct snd_soc_codec
*codec
;
3853 mutex_lock(&client_mutex
);
3854 list_for_each_entry(codec
, &codec_list
, list
) {
3855 if (dev
== codec
->dev
)
3858 mutex_unlock(&client_mutex
);
3862 list_del(&codec
->list
);
3863 snd_soc_component_del_unlocked(&codec
->component
);
3864 mutex_unlock(&client_mutex
);
3866 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3867 codec
->component
.name
);
3869 snd_soc_component_cleanup(&codec
->component
);
3870 snd_soc_cache_exit(codec
);
3873 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3875 /* Retrieve a card's name from device tree */
3876 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3877 const char *propname
)
3879 struct device_node
*np
;
3883 pr_err("card->dev is not set before calling %s\n", __func__
);
3887 np
= card
->dev
->of_node
;
3889 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3891 * EINVAL means the property does not exist. This is fine providing
3892 * card->name was previously set, which is checked later in
3893 * snd_soc_register_card.
3895 if (ret
< 0 && ret
!= -EINVAL
) {
3897 "ASoC: Property '%s' could not be read: %d\n",
3904 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3906 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3907 SND_SOC_DAPM_MIC("Microphone", NULL
),
3908 SND_SOC_DAPM_LINE("Line", NULL
),
3909 SND_SOC_DAPM_HP("Headphone", NULL
),
3910 SND_SOC_DAPM_SPK("Speaker", NULL
),
3913 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3914 const char *propname
)
3916 struct device_node
*np
= card
->dev
->of_node
;
3917 struct snd_soc_dapm_widget
*widgets
;
3918 const char *template, *wname
;
3919 int i
, j
, num_widgets
, ret
;
3921 num_widgets
= of_property_count_strings(np
, propname
);
3922 if (num_widgets
< 0) {
3924 "ASoC: Property '%s' does not exist\n", propname
);
3927 if (num_widgets
& 1) {
3929 "ASoC: Property '%s' length is not even\n", propname
);
3935 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3940 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3944 "ASoC: Could not allocate memory for widgets\n");
3948 for (i
= 0; i
< num_widgets
; i
++) {
3949 ret
= of_property_read_string_index(np
, propname
,
3953 "ASoC: Property '%s' index %d read error:%d\n",
3954 propname
, 2 * i
, ret
);
3958 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3959 if (!strncmp(template, simple_widgets
[j
].name
,
3960 strlen(simple_widgets
[j
].name
))) {
3961 widgets
[i
] = simple_widgets
[j
];
3966 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3968 "ASoC: DAPM widget '%s' is not supported\n",
3973 ret
= of_property_read_string_index(np
, propname
,
3978 "ASoC: Property '%s' index %d read error:%d\n",
3979 propname
, (2 * i
) + 1, ret
);
3983 widgets
[i
].name
= wname
;
3986 card
->of_dapm_widgets
= widgets
;
3987 card
->num_of_dapm_widgets
= num_widgets
;
3991 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3993 static int snd_soc_of_get_slot_mask(struct device_node
*np
,
3994 const char *prop_name
,
3998 const __be32
*of_slot_mask
= of_get_property(np
, prop_name
, &val
);
4004 for (i
= 0; i
< val
; i
++)
4005 if (be32_to_cpup(&of_slot_mask
[i
]))
4011 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
4012 unsigned int *tx_mask
,
4013 unsigned int *rx_mask
,
4014 unsigned int *slots
,
4015 unsigned int *slot_width
)
4021 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-tx-mask", tx_mask
);
4023 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-rx-mask", rx_mask
);
4025 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
4026 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
4034 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
4035 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
4045 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4047 void snd_soc_of_parse_audio_prefix(struct snd_soc_card
*card
,
4048 struct snd_soc_codec_conf
*codec_conf
,
4049 struct device_node
*of_node
,
4050 const char *propname
)
4052 struct device_node
*np
= card
->dev
->of_node
;
4056 ret
= of_property_read_string(np
, propname
, &str
);
4058 /* no prefix is not error */
4062 codec_conf
->of_node
= of_node
;
4063 codec_conf
->name_prefix
= str
;
4065 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix
);
4067 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4068 const char *propname
)
4070 struct device_node
*np
= card
->dev
->of_node
;
4072 struct snd_soc_dapm_route
*routes
;
4075 num_routes
= of_property_count_strings(np
, propname
);
4076 if (num_routes
< 0 || num_routes
& 1) {
4078 "ASoC: Property '%s' does not exist or its length is not even\n",
4084 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4089 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4093 "ASoC: Could not allocate DAPM route table\n");
4097 for (i
= 0; i
< num_routes
; i
++) {
4098 ret
= of_property_read_string_index(np
, propname
,
4099 2 * i
, &routes
[i
].sink
);
4102 "ASoC: Property '%s' index %d could not be read: %d\n",
4103 propname
, 2 * i
, ret
);
4106 ret
= of_property_read_string_index(np
, propname
,
4107 (2 * i
) + 1, &routes
[i
].source
);
4110 "ASoC: Property '%s' index %d could not be read: %d\n",
4111 propname
, (2 * i
) + 1, ret
);
4116 card
->num_of_dapm_routes
= num_routes
;
4117 card
->of_dapm_routes
= routes
;
4121 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4123 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4125 struct device_node
**bitclkmaster
,
4126 struct device_node
**framemaster
)
4130 unsigned int format
= 0;
4136 } of_fmt_table
[] = {
4137 { "i2s", SND_SOC_DAIFMT_I2S
},
4138 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4139 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4140 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4141 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4142 { "ac97", SND_SOC_DAIFMT_AC97
},
4143 { "pdm", SND_SOC_DAIFMT_PDM
},
4144 { "msb", SND_SOC_DAIFMT_MSB
},
4145 { "lsb", SND_SOC_DAIFMT_LSB
},
4152 * check "dai-format = xxx"
4153 * or "[prefix]format = xxx"
4154 * SND_SOC_DAIFMT_FORMAT_MASK area
4156 ret
= of_property_read_string(np
, "dai-format", &str
);
4158 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4159 ret
= of_property_read_string(np
, prop
, &str
);
4162 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4163 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4164 format
|= of_fmt_table
[i
].val
;
4171 * check "[prefix]continuous-clock"
4172 * SND_SOC_DAIFMT_CLOCK_MASK area
4174 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4175 if (of_property_read_bool(np
, prop
))
4176 format
|= SND_SOC_DAIFMT_CONT
;
4178 format
|= SND_SOC_DAIFMT_GATED
;
4181 * check "[prefix]bitclock-inversion"
4182 * check "[prefix]frame-inversion"
4183 * SND_SOC_DAIFMT_INV_MASK area
4185 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4186 bit
= !!of_get_property(np
, prop
, NULL
);
4188 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4189 frame
= !!of_get_property(np
, prop
, NULL
);
4191 switch ((bit
<< 4) + frame
) {
4193 format
|= SND_SOC_DAIFMT_IB_IF
;
4196 format
|= SND_SOC_DAIFMT_IB_NF
;
4199 format
|= SND_SOC_DAIFMT_NB_IF
;
4202 /* SND_SOC_DAIFMT_NB_NF is default */
4207 * check "[prefix]bitclock-master"
4208 * check "[prefix]frame-master"
4209 * SND_SOC_DAIFMT_MASTER_MASK area
4211 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4212 bit
= !!of_get_property(np
, prop
, NULL
);
4213 if (bit
&& bitclkmaster
)
4214 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
4216 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4217 frame
= !!of_get_property(np
, prop
, NULL
);
4218 if (frame
&& framemaster
)
4219 *framemaster
= of_parse_phandle(np
, prop
, 0);
4221 switch ((bit
<< 4) + frame
) {
4223 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4226 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4229 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4232 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4238 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4240 int snd_soc_get_dai_id(struct device_node
*ep
)
4242 struct snd_soc_component
*pos
;
4243 struct device_node
*node
;
4246 node
= of_graph_get_port_parent(ep
);
4249 * For example HDMI case, HDMI has video/sound port,
4250 * but ALSA SoC needs sound port number only.
4251 * Thus counting HDMI DT port/endpoint doesn't work.
4252 * Then, it should have .of_xlate_dai_id
4255 mutex_lock(&client_mutex
);
4256 list_for_each_entry(pos
, &component_list
, list
) {
4257 struct device_node
*component_of_node
= pos
->dev
->of_node
;
4259 if (!component_of_node
&& pos
->dev
->parent
)
4260 component_of_node
= pos
->dev
->parent
->of_node
;
4262 if (component_of_node
!= node
)
4265 if (pos
->driver
->of_xlate_dai_id
)
4266 ret
= pos
->driver
->of_xlate_dai_id(pos
, ep
);
4270 mutex_unlock(&client_mutex
);
4276 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id
);
4278 int snd_soc_get_dai_name(struct of_phandle_args
*args
,
4279 const char **dai_name
)
4281 struct snd_soc_component
*pos
;
4282 struct device_node
*component_of_node
;
4283 int ret
= -EPROBE_DEFER
;
4285 mutex_lock(&client_mutex
);
4286 list_for_each_entry(pos
, &component_list
, list
) {
4287 component_of_node
= pos
->dev
->of_node
;
4288 if (!component_of_node
&& pos
->dev
->parent
)
4289 component_of_node
= pos
->dev
->parent
->of_node
;
4291 if (component_of_node
!= args
->np
)
4294 if (pos
->driver
->of_xlate_dai_name
) {
4295 ret
= pos
->driver
->of_xlate_dai_name(pos
,
4299 struct snd_soc_dai
*dai
;
4302 switch (args
->args_count
) {
4304 id
= 0; /* same as dai_drv[0] */
4314 if (id
< 0 || id
>= pos
->num_dai
) {
4321 /* find target DAI */
4322 list_for_each_entry(dai
, &pos
->dai_list
, list
) {
4328 *dai_name
= dai
->driver
->name
;
4330 *dai_name
= pos
->name
;
4335 mutex_unlock(&client_mutex
);
4338 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name
);
4340 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4341 const char **dai_name
)
4343 struct of_phandle_args args
;
4346 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4347 "#sound-dai-cells", 0, &args
);
4351 ret
= snd_soc_get_dai_name(&args
, dai_name
);
4353 of_node_put(args
.np
);
4357 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4360 * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array
4361 * @dai_link: DAI link
4363 * Dereference device nodes acquired by snd_soc_of_get_dai_link_codecs().
4365 void snd_soc_of_put_dai_link_codecs(struct snd_soc_dai_link
*dai_link
)
4367 struct snd_soc_dai_link_component
*component
= dai_link
->codecs
;
4370 for (index
= 0; index
< dai_link
->num_codecs
; index
++, component
++) {
4371 if (!component
->of_node
)
4373 of_node_put(component
->of_node
);
4374 component
->of_node
= NULL
;
4377 EXPORT_SYMBOL_GPL(snd_soc_of_put_dai_link_codecs
);
4380 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4382 * @of_node: Device node
4383 * @dai_link: DAI link
4385 * Builds an array of CODEC DAI components from the DAI link property
4387 * The array is set in the DAI link and the number of DAIs is set accordingly.
4388 * The device nodes in the array (of_node) must be dereferenced by calling
4389 * snd_soc_of_put_dai_link_codecs() on @dai_link.
4391 * Returns 0 for success
4393 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
4394 struct device_node
*of_node
,
4395 struct snd_soc_dai_link
*dai_link
)
4397 struct of_phandle_args args
;
4398 struct snd_soc_dai_link_component
*component
;
4400 int index
, num_codecs
, ret
;
4402 /* Count the number of CODECs */
4404 num_codecs
= of_count_phandle_with_args(of_node
, name
,
4405 "#sound-dai-cells");
4406 if (num_codecs
<= 0) {
4407 if (num_codecs
== -ENOENT
)
4408 dev_err(dev
, "No 'sound-dai' property\n");
4410 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
4413 component
= devm_kzalloc(dev
,
4414 sizeof *component
* num_codecs
,
4418 dai_link
->codecs
= component
;
4419 dai_link
->num_codecs
= num_codecs
;
4421 /* Parse the list */
4422 for (index
= 0, component
= dai_link
->codecs
;
4423 index
< dai_link
->num_codecs
;
4424 index
++, component
++) {
4425 ret
= of_parse_phandle_with_args(of_node
, name
,
4430 component
->of_node
= args
.np
;
4431 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
4437 snd_soc_of_put_dai_link_codecs(dai_link
);
4438 dai_link
->codecs
= NULL
;
4439 dai_link
->num_codecs
= 0;
4442 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
4444 static int __init
snd_soc_init(void)
4446 snd_soc_debugfs_init();
4447 snd_soc_util_init();
4449 return platform_driver_register(&soc_driver
);
4451 module_init(snd_soc_init
);
4453 static void __exit
snd_soc_exit(void)
4455 snd_soc_util_exit();
4456 snd_soc_debugfs_exit();
4458 platform_driver_unregister(&soc_driver
);
4460 module_exit(snd_soc_exit
);
4462 /* Module information */
4463 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4464 MODULE_DESCRIPTION("ALSA SoC Core");
4465 MODULE_LICENSE("GPL");
4466 MODULE_ALIAS("platform:soc-audio");