2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/of_graph.h>
38 #include <linux/dmi.h>
39 #include <sound/core.h>
40 #include <sound/jack.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/soc-dpcm.h>
45 #include <sound/soc-topology.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry
*snd_soc_debugfs_root
;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
58 static DEFINE_MUTEX(client_mutex
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
61 static LIST_HEAD(component_list
);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time
= 5000;
69 module_param(pmdown_time
, int, 0);
70 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
72 /* If a DMI filed contain strings in this blacklist (e.g.
73 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
74 * as invalid and dropped when setting the card long name from DMI info.
76 static const char * const dmi_blacklist
[] = {
77 "To be filled by OEM",
83 NULL
, /* terminator */
86 /* returns the minimum number of bytes needed to represent
87 * a particular given value */
88 static int min_bytes_needed(unsigned long val
)
93 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
96 c
= (sizeof val
* 8) - c
;
104 /* fill buf which is 'len' bytes with a formatted
105 * string of the form 'reg: value\n' */
106 static int format_register_str(struct snd_soc_codec
*codec
,
107 unsigned int reg
, char *buf
, size_t len
)
109 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
110 int regsize
= codec
->driver
->reg_word_size
* 2;
113 /* +2 for ': ' and + 1 for '\n' */
114 if (wordsize
+ regsize
+ 2 + 1 != len
)
117 sprintf(buf
, "%.*x: ", wordsize
, reg
);
120 ret
= snd_soc_read(codec
, reg
);
122 memset(buf
, 'X', regsize
);
124 sprintf(buf
, "%.*x", regsize
, ret
);
126 /* no NUL-termination needed */
130 /* codec register dump */
131 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
132 size_t count
, loff_t pos
)
135 int wordsize
, regsize
;
140 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
141 regsize
= codec
->driver
->reg_word_size
* 2;
143 len
= wordsize
+ regsize
+ 2 + 1;
145 if (!codec
->driver
->reg_cache_size
)
148 if (codec
->driver
->reg_cache_step
)
149 step
= codec
->driver
->reg_cache_step
;
151 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total
+ len
>= count
- 1)
157 format_register_str(codec
, i
, buf
+ total
, len
);
163 total
= min(total
, count
- 1);
168 static ssize_t
codec_reg_show(struct device
*dev
,
169 struct device_attribute
*attr
, char *buf
)
171 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
173 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
176 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
178 static ssize_t
pmdown_time_show(struct device
*dev
,
179 struct device_attribute
*attr
, char *buf
)
181 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
183 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
186 static ssize_t
pmdown_time_set(struct device
*dev
,
187 struct device_attribute
*attr
,
188 const char *buf
, size_t count
)
190 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
193 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
200 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
202 static struct attribute
*soc_dev_attrs
[] = {
203 &dev_attr_codec_reg
.attr
,
204 &dev_attr_pmdown_time
.attr
,
208 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
209 struct attribute
*attr
, int idx
)
211 struct device
*dev
= kobj_to_dev(kobj
);
212 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
214 if (attr
== &dev_attr_pmdown_time
.attr
)
215 return attr
->mode
; /* always visible */
216 return rtd
->codec
? attr
->mode
: 0; /* enabled only with codec */
219 static const struct attribute_group soc_dapm_dev_group
= {
220 .attrs
= soc_dapm_dev_attrs
,
221 .is_visible
= soc_dev_attr_is_visible
,
224 static const struct attribute_group soc_dev_roup
= {
225 .attrs
= soc_dev_attrs
,
226 .is_visible
= soc_dev_attr_is_visible
,
229 static const struct attribute_group
*soc_dev_attr_groups
[] = {
235 #ifdef CONFIG_DEBUG_FS
236 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
237 size_t count
, loff_t
*ppos
)
240 struct snd_soc_codec
*codec
= file
->private_data
;
243 if (*ppos
< 0 || !count
)
246 buf
= kmalloc(count
, GFP_KERNEL
);
250 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
252 if (copy_to_user(user_buf
, buf
, ret
)) {
263 static ssize_t
codec_reg_write_file(struct file
*file
,
264 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
269 unsigned long reg
, value
;
270 struct snd_soc_codec
*codec
= file
->private_data
;
273 buf_size
= min(count
, (sizeof(buf
)-1));
274 if (copy_from_user(buf
, user_buf
, buf_size
))
278 while (*start
== ' ')
280 reg
= simple_strtoul(start
, &start
, 16);
281 while (*start
== ' ')
283 ret
= kstrtoul(start
, 16, &value
);
287 /* Userspace has been fiddling around behind the kernel's back */
288 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
290 snd_soc_write(codec
, reg
, value
);
294 static const struct file_operations codec_reg_fops
= {
296 .read
= codec_reg_read_file
,
297 .write
= codec_reg_write_file
,
298 .llseek
= default_llseek
,
301 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
303 if (!component
->card
->debugfs_card_root
)
306 if (component
->debugfs_prefix
) {
309 name
= kasprintf(GFP_KERNEL
, "%s:%s",
310 component
->debugfs_prefix
, component
->name
);
312 component
->debugfs_root
= debugfs_create_dir(name
,
313 component
->card
->debugfs_card_root
);
317 component
->debugfs_root
= debugfs_create_dir(component
->name
,
318 component
->card
->debugfs_card_root
);
321 if (!component
->debugfs_root
) {
322 dev_warn(component
->dev
,
323 "ASoC: Failed to create component debugfs directory\n");
327 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
328 component
->debugfs_root
);
330 if (component
->init_debugfs
)
331 component
->init_debugfs(component
);
334 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
336 debugfs_remove_recursive(component
->debugfs_root
);
339 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
341 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
343 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
344 codec
->component
.debugfs_root
,
345 codec
, &codec_reg_fops
);
346 if (!codec
->debugfs_reg
)
348 "ASoC: Failed to create codec register debugfs file\n");
351 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
352 size_t count
, loff_t
*ppos
)
354 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
355 ssize_t len
, ret
= 0;
356 struct snd_soc_codec
*codec
;
361 mutex_lock(&client_mutex
);
363 list_for_each_entry(codec
, &codec_list
, list
) {
364 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
365 codec
->component
.name
);
368 if (ret
> PAGE_SIZE
) {
374 mutex_unlock(&client_mutex
);
377 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
384 static const struct file_operations codec_list_fops
= {
385 .read
= codec_list_read_file
,
386 .llseek
= default_llseek
,/* read accesses f_pos */
389 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
390 size_t count
, loff_t
*ppos
)
392 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
393 ssize_t len
, ret
= 0;
394 struct snd_soc_component
*component
;
395 struct snd_soc_dai
*dai
;
400 mutex_lock(&client_mutex
);
402 list_for_each_entry(component
, &component_list
, list
) {
403 list_for_each_entry(dai
, &component
->dai_list
, list
) {
404 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
408 if (ret
> PAGE_SIZE
) {
415 mutex_unlock(&client_mutex
);
417 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
424 static const struct file_operations dai_list_fops
= {
425 .read
= dai_list_read_file
,
426 .llseek
= default_llseek
,/* read accesses f_pos */
429 static ssize_t
platform_list_read_file(struct file
*file
,
430 char __user
*user_buf
,
431 size_t count
, loff_t
*ppos
)
433 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
434 ssize_t len
, ret
= 0;
435 struct snd_soc_platform
*platform
;
440 mutex_lock(&client_mutex
);
442 list_for_each_entry(platform
, &platform_list
, list
) {
443 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
444 platform
->component
.name
);
447 if (ret
> PAGE_SIZE
) {
453 mutex_unlock(&client_mutex
);
455 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
462 static const struct file_operations platform_list_fops
= {
463 .read
= platform_list_read_file
,
464 .llseek
= default_llseek
,/* read accesses f_pos */
467 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
469 if (!snd_soc_debugfs_root
)
472 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
473 snd_soc_debugfs_root
);
474 if (!card
->debugfs_card_root
) {
476 "ASoC: Failed to create card debugfs directory\n");
480 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
481 card
->debugfs_card_root
,
483 if (!card
->debugfs_pop_time
)
485 "ASoC: Failed to create pop time debugfs file\n");
488 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
490 debugfs_remove_recursive(card
->debugfs_card_root
);
494 static void snd_soc_debugfs_init(void)
496 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
497 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
498 pr_warn("ASoC: Failed to create debugfs directory\n");
499 snd_soc_debugfs_root
= NULL
;
503 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
505 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
507 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
509 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
511 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
512 &platform_list_fops
))
513 pr_warn("ASoC: Failed to create platform list debugfs file\n");
516 static void snd_soc_debugfs_exit(void)
518 debugfs_remove_recursive(snd_soc_debugfs_root
);
523 #define soc_init_codec_debugfs NULL
525 static inline void soc_init_component_debugfs(
526 struct snd_soc_component
*component
)
530 static inline void soc_cleanup_component_debugfs(
531 struct snd_soc_component
*component
)
535 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
539 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
543 static inline void snd_soc_debugfs_init(void)
547 static inline void snd_soc_debugfs_exit(void)
553 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
554 const char *dai_link
, int stream
)
556 struct snd_soc_pcm_runtime
*rtd
;
558 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
559 if (rtd
->dai_link
->no_pcm
&&
560 !strcmp(rtd
->dai_link
->name
, dai_link
))
561 return rtd
->pcm
->streams
[stream
].substream
;
563 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
566 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
568 static struct snd_soc_pcm_runtime
*soc_new_pcm_runtime(
569 struct snd_soc_card
*card
, struct snd_soc_dai_link
*dai_link
)
571 struct snd_soc_pcm_runtime
*rtd
;
573 rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
), GFP_KERNEL
);
578 rtd
->dai_link
= dai_link
;
579 rtd
->codec_dais
= kzalloc(sizeof(struct snd_soc_dai
*) *
580 dai_link
->num_codecs
,
582 if (!rtd
->codec_dais
) {
590 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime
*rtd
)
592 if (rtd
&& rtd
->codec_dais
)
593 kfree(rtd
->codec_dais
);
597 static void soc_add_pcm_runtime(struct snd_soc_card
*card
,
598 struct snd_soc_pcm_runtime
*rtd
)
600 list_add_tail(&rtd
->list
, &card
->rtd_list
);
601 rtd
->num
= card
->num_rtd
;
605 static void soc_remove_pcm_runtimes(struct snd_soc_card
*card
)
607 struct snd_soc_pcm_runtime
*rtd
, *_rtd
;
609 list_for_each_entry_safe(rtd
, _rtd
, &card
->rtd_list
, list
) {
610 list_del(&rtd
->list
);
611 soc_free_pcm_runtime(rtd
);
617 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
618 const char *dai_link
)
620 struct snd_soc_pcm_runtime
*rtd
;
622 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
623 if (!strcmp(rtd
->dai_link
->name
, dai_link
))
626 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
629 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
631 static void codec2codec_close_delayed_work(struct work_struct
*work
)
633 /* Currently nothing to do for c2c links
634 * Since c2c links are internal nodes in the DAPM graph and
635 * don't interface with the outside world or application layer
636 * we don't have to do any special handling on close.
640 #ifdef CONFIG_PM_SLEEP
641 /* powers down audio subsystem for suspend */
642 int snd_soc_suspend(struct device
*dev
)
644 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
645 struct snd_soc_component
*component
;
646 struct snd_soc_pcm_runtime
*rtd
;
649 /* If the card is not initialized yet there is nothing to do */
650 if (!card
->instantiated
)
653 /* Due to the resume being scheduled into a workqueue we could
654 * suspend before that's finished - wait for it to complete.
656 snd_power_lock(card
->snd_card
);
657 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
658 snd_power_unlock(card
->snd_card
);
660 /* we're going to block userspace touching us until resume completes */
661 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
663 /* mute any active DACs */
664 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
666 if (rtd
->dai_link
->ignore_suspend
)
669 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
670 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
671 struct snd_soc_dai_driver
*drv
= dai
->driver
;
673 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
674 drv
->ops
->digital_mute(dai
, 1);
678 /* suspend all pcms */
679 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
680 if (rtd
->dai_link
->ignore_suspend
)
683 snd_pcm_suspend_all(rtd
->pcm
);
686 if (card
->suspend_pre
)
687 card
->suspend_pre(card
);
689 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
690 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
692 if (rtd
->dai_link
->ignore_suspend
)
695 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
696 cpu_dai
->driver
->suspend(cpu_dai
);
699 /* close any waiting streams */
700 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
701 flush_delayed_work(&rtd
->delayed_work
);
703 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
705 if (rtd
->dai_link
->ignore_suspend
)
708 snd_soc_dapm_stream_event(rtd
,
709 SNDRV_PCM_STREAM_PLAYBACK
,
710 SND_SOC_DAPM_STREAM_SUSPEND
);
712 snd_soc_dapm_stream_event(rtd
,
713 SNDRV_PCM_STREAM_CAPTURE
,
714 SND_SOC_DAPM_STREAM_SUSPEND
);
717 /* Recheck all endpoints too, their state is affected by suspend */
718 dapm_mark_endpoints_dirty(card
);
719 snd_soc_dapm_sync(&card
->dapm
);
721 /* suspend all COMPONENTs */
722 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
723 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
725 /* If there are paths active then the COMPONENT will be held with
726 * bias _ON and should not be suspended. */
727 if (!component
->suspended
) {
728 switch (snd_soc_dapm_get_bias_level(dapm
)) {
729 case SND_SOC_BIAS_STANDBY
:
731 * If the COMPONENT is capable of idle
732 * bias off then being in STANDBY
733 * means it's doing something,
734 * otherwise fall through.
736 if (dapm
->idle_bias_off
) {
737 dev_dbg(component
->dev
,
738 "ASoC: idle_bias_off CODEC on over suspend\n");
742 case SND_SOC_BIAS_OFF
:
743 if (component
->suspend
)
744 component
->suspend(component
);
745 component
->suspended
= 1;
746 if (component
->regmap
)
747 regcache_mark_dirty(component
->regmap
);
748 /* deactivate pins to sleep state */
749 pinctrl_pm_select_sleep_state(component
->dev
);
752 dev_dbg(component
->dev
,
753 "ASoC: COMPONENT is on over suspend\n");
759 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
760 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
762 if (rtd
->dai_link
->ignore_suspend
)
765 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
766 cpu_dai
->driver
->suspend(cpu_dai
);
768 /* deactivate pins to sleep state */
769 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
772 if (card
->suspend_post
)
773 card
->suspend_post(card
);
777 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
779 /* deferred resume work, so resume can complete before we finished
780 * setting our codec back up, which can be very slow on I2C
782 static void soc_resume_deferred(struct work_struct
*work
)
784 struct snd_soc_card
*card
=
785 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
786 struct snd_soc_pcm_runtime
*rtd
;
787 struct snd_soc_component
*component
;
790 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
791 * so userspace apps are blocked from touching us
794 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
796 /* Bring us up into D2 so that DAPM starts enabling things */
797 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
799 if (card
->resume_pre
)
800 card
->resume_pre(card
);
802 /* resume control bus DAIs */
803 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
804 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
806 if (rtd
->dai_link
->ignore_suspend
)
809 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
810 cpu_dai
->driver
->resume(cpu_dai
);
813 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
814 if (component
->suspended
) {
815 if (component
->resume
)
816 component
->resume(component
);
817 component
->suspended
= 0;
821 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
823 if (rtd
->dai_link
->ignore_suspend
)
826 snd_soc_dapm_stream_event(rtd
,
827 SNDRV_PCM_STREAM_PLAYBACK
,
828 SND_SOC_DAPM_STREAM_RESUME
);
830 snd_soc_dapm_stream_event(rtd
,
831 SNDRV_PCM_STREAM_CAPTURE
,
832 SND_SOC_DAPM_STREAM_RESUME
);
835 /* unmute any active DACs */
836 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
838 if (rtd
->dai_link
->ignore_suspend
)
841 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
842 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
843 struct snd_soc_dai_driver
*drv
= dai
->driver
;
845 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
846 drv
->ops
->digital_mute(dai
, 0);
850 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
851 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
853 if (rtd
->dai_link
->ignore_suspend
)
856 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
857 cpu_dai
->driver
->resume(cpu_dai
);
860 if (card
->resume_post
)
861 card
->resume_post(card
);
863 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
865 /* Recheck all endpoints too, their state is affected by suspend */
866 dapm_mark_endpoints_dirty(card
);
867 snd_soc_dapm_sync(&card
->dapm
);
869 /* userspace can access us now we are back as we were before */
870 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
873 /* powers up audio subsystem after a suspend */
874 int snd_soc_resume(struct device
*dev
)
876 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
877 bool bus_control
= false;
878 struct snd_soc_pcm_runtime
*rtd
;
880 /* If the card is not initialized yet there is nothing to do */
881 if (!card
->instantiated
)
884 /* activate pins from sleep state */
885 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
886 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
887 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
891 pinctrl_pm_select_default_state(cpu_dai
->dev
);
893 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
894 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
895 if (codec_dai
->active
)
896 pinctrl_pm_select_default_state(codec_dai
->dev
);
901 * DAIs that also act as the control bus master might have other drivers
902 * hanging off them so need to resume immediately. Other drivers don't
903 * have that problem and may take a substantial amount of time to resume
904 * due to I/O costs and anti-pop so handle them out of line.
906 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
907 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
908 bus_control
|= cpu_dai
->driver
->bus_control
;
911 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
912 soc_resume_deferred(&card
->deferred_resume_work
);
914 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
915 if (!schedule_work(&card
->deferred_resume_work
))
916 dev_err(dev
, "ASoC: resume work item may be lost\n");
921 EXPORT_SYMBOL_GPL(snd_soc_resume
);
923 #define snd_soc_suspend NULL
924 #define snd_soc_resume NULL
927 static const struct snd_soc_dai_ops null_dai_ops
= {
930 static struct snd_soc_component
*soc_find_component(
931 const struct device_node
*of_node
, const char *name
)
933 struct snd_soc_component
*component
;
935 lockdep_assert_held(&client_mutex
);
937 list_for_each_entry(component
, &component_list
, list
) {
939 if (component
->dev
->of_node
== of_node
)
941 } else if (strcmp(component
->name
, name
) == 0) {
950 * snd_soc_find_dai - Find a registered DAI
952 * @dlc: name of the DAI and optional component info to match
954 * This function will search all registered components and their DAIs to
955 * find the DAI of the same name. The component's of_node and name
956 * should also match if being specified.
958 * Return: pointer of DAI, or NULL if not found.
960 struct snd_soc_dai
*snd_soc_find_dai(
961 const struct snd_soc_dai_link_component
*dlc
)
963 struct snd_soc_component
*component
;
964 struct snd_soc_dai
*dai
;
965 struct device_node
*component_of_node
;
967 lockdep_assert_held(&client_mutex
);
969 /* Find CPU DAI from registered DAIs*/
970 list_for_each_entry(component
, &component_list
, list
) {
971 component_of_node
= component
->dev
->of_node
;
972 if (!component_of_node
&& component
->dev
->parent
)
973 component_of_node
= component
->dev
->parent
->of_node
;
975 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
977 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
979 list_for_each_entry(dai
, &component
->dai_list
, list
) {
980 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
))
989 EXPORT_SYMBOL_GPL(snd_soc_find_dai
);
993 * snd_soc_find_dai_link - Find a DAI link
996 * @id: DAI link ID to match
997 * @name: DAI link name to match, optional
998 * @stream_name: DAI link stream name to match, optional
1000 * This function will search all existing DAI links of the soc card to
1001 * find the link of the same ID. Since DAI links may not have their
1002 * unique ID, so name and stream name should also match if being
1005 * Return: pointer of DAI link, or NULL if not found.
1007 struct snd_soc_dai_link
*snd_soc_find_dai_link(struct snd_soc_card
*card
,
1008 int id
, const char *name
,
1009 const char *stream_name
)
1011 struct snd_soc_dai_link
*link
, *_link
;
1013 lockdep_assert_held(&client_mutex
);
1015 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1019 if (name
&& (!link
->name
|| strcmp(name
, link
->name
)))
1022 if (stream_name
&& (!link
->stream_name
1023 || strcmp(stream_name
, link
->stream_name
)))
1031 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link
);
1033 static bool soc_is_dai_link_bound(struct snd_soc_card
*card
,
1034 struct snd_soc_dai_link
*dai_link
)
1036 struct snd_soc_pcm_runtime
*rtd
;
1038 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
1039 if (rtd
->dai_link
== dai_link
)
1046 static int soc_bind_dai_link(struct snd_soc_card
*card
,
1047 struct snd_soc_dai_link
*dai_link
)
1049 struct snd_soc_pcm_runtime
*rtd
;
1050 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
1051 struct snd_soc_dai_link_component cpu_dai_component
;
1052 struct snd_soc_dai
**codec_dais
;
1053 struct snd_soc_platform
*platform
;
1054 struct device_node
*platform_of_node
;
1055 const char *platform_name
;
1058 dev_dbg(card
->dev
, "ASoC: binding %s\n", dai_link
->name
);
1060 if (soc_is_dai_link_bound(card
, dai_link
)) {
1061 dev_dbg(card
->dev
, "ASoC: dai link %s already bound\n",
1066 rtd
= soc_new_pcm_runtime(card
, dai_link
);
1070 cpu_dai_component
.name
= dai_link
->cpu_name
;
1071 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
1072 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
1073 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
1074 if (!rtd
->cpu_dai
) {
1075 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
1076 dai_link
->cpu_dai_name
);
1080 rtd
->num_codecs
= dai_link
->num_codecs
;
1082 /* Find CODEC from registered CODECs */
1083 codec_dais
= rtd
->codec_dais
;
1084 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1085 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
1086 if (!codec_dais
[i
]) {
1087 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
1088 codecs
[i
].dai_name
);
1093 /* Single codec links expect codec and codec_dai in runtime data */
1094 rtd
->codec_dai
= codec_dais
[0];
1095 rtd
->codec
= rtd
->codec_dai
->codec
;
1097 /* if there's no platform we match on the empty platform */
1098 platform_name
= dai_link
->platform_name
;
1099 if (!platform_name
&& !dai_link
->platform_of_node
)
1100 platform_name
= "snd-soc-dummy";
1102 /* find one from the set of registered platforms */
1103 list_for_each_entry(platform
, &platform_list
, list
) {
1104 platform_of_node
= platform
->dev
->of_node
;
1105 if (!platform_of_node
&& platform
->dev
->parent
->of_node
)
1106 platform_of_node
= platform
->dev
->parent
->of_node
;
1108 if (dai_link
->platform_of_node
) {
1109 if (platform_of_node
!= dai_link
->platform_of_node
)
1112 if (strcmp(platform
->component
.name
, platform_name
))
1116 rtd
->platform
= platform
;
1118 if (!rtd
->platform
) {
1119 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
1120 dai_link
->platform_name
);
1124 soc_add_pcm_runtime(card
, rtd
);
1128 soc_free_pcm_runtime(rtd
);
1129 return -EPROBE_DEFER
;
1132 static void soc_remove_component(struct snd_soc_component
*component
)
1134 if (!component
->card
)
1137 list_del(&component
->card_list
);
1139 if (component
->remove
)
1140 component
->remove(component
);
1142 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1144 soc_cleanup_component_debugfs(component
);
1145 component
->card
= NULL
;
1146 module_put(component
->dev
->driver
->owner
);
1149 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1153 if (dai
&& dai
->probed
&&
1154 dai
->driver
->remove_order
== order
) {
1155 if (dai
->driver
->remove
) {
1156 err
= dai
->driver
->remove(dai
);
1159 "ASoC: failed to remove %s: %d\n",
1166 static void soc_remove_link_dais(struct snd_soc_card
*card
,
1167 struct snd_soc_pcm_runtime
*rtd
, int order
)
1171 /* unregister the rtd device */
1172 if (rtd
->dev_registered
) {
1173 device_unregister(rtd
->dev
);
1174 rtd
->dev_registered
= 0;
1177 /* remove the CODEC DAI */
1178 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1179 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1181 soc_remove_dai(rtd
->cpu_dai
, order
);
1184 static void soc_remove_link_components(struct snd_soc_card
*card
,
1185 struct snd_soc_pcm_runtime
*rtd
, int order
)
1187 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1188 struct snd_soc_platform
*platform
= rtd
->platform
;
1189 struct snd_soc_component
*component
;
1192 /* remove the platform */
1193 if (platform
&& platform
->component
.driver
->remove_order
== order
)
1194 soc_remove_component(&platform
->component
);
1196 /* remove the CODEC-side CODEC */
1197 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1198 component
= rtd
->codec_dais
[i
]->component
;
1199 if (component
->driver
->remove_order
== order
)
1200 soc_remove_component(component
);
1203 /* remove any CPU-side CODEC */
1205 if (cpu_dai
->component
->driver
->remove_order
== order
)
1206 soc_remove_component(cpu_dai
->component
);
1210 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1213 struct snd_soc_pcm_runtime
*rtd
;
1214 struct snd_soc_dai_link
*link
, *_link
;
1216 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1218 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1219 soc_remove_link_dais(card
, rtd
, order
);
1222 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1224 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1225 soc_remove_link_components(card
, rtd
, order
);
1228 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1229 if (link
->dobj
.type
== SND_SOC_DOBJ_DAI_LINK
)
1230 dev_warn(card
->dev
, "Topology forgot to remove link %s?\n",
1233 list_del(&link
->list
);
1234 card
->num_dai_links
--;
1238 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
1239 struct snd_soc_dai_link
*dai_link
)
1241 /* Legacy codec/codec_dai link is a single entry in multicodec */
1242 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
1243 dai_link
->codec_dai_name
) {
1244 dai_link
->num_codecs
= 1;
1246 dai_link
->codecs
= devm_kzalloc(card
->dev
,
1247 sizeof(struct snd_soc_dai_link_component
),
1249 if (!dai_link
->codecs
)
1252 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
1253 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
1254 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
1257 if (!dai_link
->codecs
) {
1258 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
1265 static int soc_init_dai_link(struct snd_soc_card
*card
,
1266 struct snd_soc_dai_link
*link
)
1270 ret
= snd_soc_init_multicodec(card
, link
);
1272 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
1276 for (i
= 0; i
< link
->num_codecs
; i
++) {
1278 * Codec must be specified by 1 of name or OF node,
1279 * not both or neither.
1281 if (!!link
->codecs
[i
].name
==
1282 !!link
->codecs
[i
].of_node
) {
1283 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
1287 /* Codec DAI name must be specified */
1288 if (!link
->codecs
[i
].dai_name
) {
1289 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
1296 * Platform may be specified by either name or OF node, but
1297 * can be left unspecified, and a dummy platform will be used.
1299 if (link
->platform_name
&& link
->platform_of_node
) {
1301 "ASoC: Both platform name/of_node are set for %s\n",
1307 * CPU device may be specified by either name or OF node, but
1308 * can be left unspecified, and will be matched based on DAI
1311 if (link
->cpu_name
&& link
->cpu_of_node
) {
1313 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1318 * At least one of CPU DAI name or CPU device name/node must be
1321 if (!link
->cpu_dai_name
&&
1322 !(link
->cpu_name
|| link
->cpu_of_node
)) {
1324 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1333 * snd_soc_add_dai_link - Add a DAI link dynamically
1334 * @card: The ASoC card to which the DAI link is added
1335 * @dai_link: The new DAI link to add
1337 * This function adds a DAI link to the ASoC card's link list.
1339 * Note: Topology can use this API to add DAI links when probing the
1340 * topology component. And machine drivers can still define static
1341 * DAI links in dai_link array.
1343 int snd_soc_add_dai_link(struct snd_soc_card
*card
,
1344 struct snd_soc_dai_link
*dai_link
)
1346 if (dai_link
->dobj
.type
1347 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1348 dev_err(card
->dev
, "Invalid dai link type %d\n",
1349 dai_link
->dobj
.type
);
1353 lockdep_assert_held(&client_mutex
);
1354 /* Notify the machine driver for extra initialization
1355 * on the link created by topology.
1357 if (dai_link
->dobj
.type
&& card
->add_dai_link
)
1358 card
->add_dai_link(card
, dai_link
);
1360 list_add_tail(&dai_link
->list
, &card
->dai_link_list
);
1361 card
->num_dai_links
++;
1365 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link
);
1368 * snd_soc_remove_dai_link - Remove a DAI link from the list
1369 * @card: The ASoC card that owns the link
1370 * @dai_link: The DAI link to remove
1372 * This function removes a DAI link from the ASoC card's link list.
1374 * For DAI links previously added by topology, topology should
1375 * remove them by using the dobj embedded in the link.
1377 void snd_soc_remove_dai_link(struct snd_soc_card
*card
,
1378 struct snd_soc_dai_link
*dai_link
)
1380 struct snd_soc_dai_link
*link
, *_link
;
1382 if (dai_link
->dobj
.type
1383 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1384 dev_err(card
->dev
, "Invalid dai link type %d\n",
1385 dai_link
->dobj
.type
);
1389 lockdep_assert_held(&client_mutex
);
1390 /* Notify the machine driver for extra destruction
1391 * on the link created by topology.
1393 if (dai_link
->dobj
.type
&& card
->remove_dai_link
)
1394 card
->remove_dai_link(card
, dai_link
);
1396 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1397 if (link
== dai_link
) {
1398 list_del(&link
->list
);
1399 card
->num_dai_links
--;
1404 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link
);
1406 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1407 struct snd_soc_component
*component
)
1411 if (card
->codec_conf
== NULL
)
1414 for (i
= 0; i
< card
->num_configs
; i
++) {
1415 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1416 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1418 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1420 component
->name_prefix
= map
->name_prefix
;
1425 static int soc_probe_component(struct snd_soc_card
*card
,
1426 struct snd_soc_component
*component
)
1428 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1429 struct snd_soc_dai
*dai
;
1432 if (!strcmp(component
->name
, "snd-soc-dummy"))
1435 if (component
->card
) {
1436 if (component
->card
!= card
) {
1437 dev_err(component
->dev
,
1438 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1439 card
->name
, component
->card
->name
);
1445 if (!try_module_get(component
->dev
->driver
->owner
))
1448 component
->card
= card
;
1450 soc_set_name_prefix(card
, component
);
1452 soc_init_component_debugfs(component
);
1454 if (component
->dapm_widgets
) {
1455 ret
= snd_soc_dapm_new_controls(dapm
, component
->dapm_widgets
,
1456 component
->num_dapm_widgets
);
1459 dev_err(component
->dev
,
1460 "Failed to create new controls %d\n", ret
);
1465 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1466 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1468 dev_err(component
->dev
,
1469 "Failed to create DAI widgets %d\n", ret
);
1474 if (component
->probe
) {
1475 ret
= component
->probe(component
);
1477 dev_err(component
->dev
,
1478 "ASoC: failed to probe component %d\n", ret
);
1482 WARN(dapm
->idle_bias_off
&&
1483 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1484 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1488 /* machine specific init */
1489 if (component
->init
) {
1490 ret
= component
->init(component
);
1492 dev_err(component
->dev
,
1493 "Failed to do machine specific init %d\n", ret
);
1498 if (component
->controls
)
1499 snd_soc_add_component_controls(component
, component
->controls
,
1500 component
->num_controls
);
1501 if (component
->dapm_routes
)
1502 snd_soc_dapm_add_routes(dapm
, component
->dapm_routes
,
1503 component
->num_dapm_routes
);
1505 list_add(&dapm
->list
, &card
->dapm_list
);
1506 list_add(&component
->card_list
, &card
->component_dev_list
);
1511 soc_cleanup_component_debugfs(component
);
1512 component
->card
= NULL
;
1513 module_put(component
->dev
->driver
->owner
);
1518 static void rtd_release(struct device
*dev
)
1523 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1528 /* register the rtd device */
1529 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1532 device_initialize(rtd
->dev
);
1533 rtd
->dev
->parent
= rtd
->card
->dev
;
1534 rtd
->dev
->release
= rtd_release
;
1535 rtd
->dev
->groups
= soc_dev_attr_groups
;
1536 dev_set_name(rtd
->dev
, "%s", name
);
1537 dev_set_drvdata(rtd
->dev
, rtd
);
1538 mutex_init(&rtd
->pcm_mutex
);
1539 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1540 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1541 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1542 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1543 ret
= device_add(rtd
->dev
);
1545 /* calling put_device() here to free the rtd->dev */
1546 put_device(rtd
->dev
);
1547 dev_err(rtd
->card
->dev
,
1548 "ASoC: failed to register runtime device: %d\n", ret
);
1551 rtd
->dev_registered
= 1;
1555 static int soc_probe_link_components(struct snd_soc_card
*card
,
1556 struct snd_soc_pcm_runtime
*rtd
,
1559 struct snd_soc_platform
*platform
= rtd
->platform
;
1560 struct snd_soc_component
*component
;
1563 /* probe the CPU-side component, if it is a CODEC */
1564 component
= rtd
->cpu_dai
->component
;
1565 if (component
->driver
->probe_order
== order
) {
1566 ret
= soc_probe_component(card
, component
);
1571 /* probe the CODEC-side components */
1572 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1573 component
= rtd
->codec_dais
[i
]->component
;
1574 if (component
->driver
->probe_order
== order
) {
1575 ret
= soc_probe_component(card
, component
);
1581 /* probe the platform */
1582 if (platform
->component
.driver
->probe_order
== order
) {
1583 ret
= soc_probe_component(card
, &platform
->component
);
1591 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1595 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1596 if (dai
->driver
->probe
) {
1597 ret
= dai
->driver
->probe(dai
);
1600 "ASoC: failed to probe DAI %s: %d\n",
1612 static int soc_link_dai_pcm_new(struct snd_soc_dai
**dais
, int num_dais
,
1613 struct snd_soc_pcm_runtime
*rtd
)
1617 for (i
= 0; i
< num_dais
; ++i
) {
1618 struct snd_soc_dai_driver
*drv
= dais
[i
]->driver
;
1620 if (!rtd
->dai_link
->no_pcm
&& drv
->pcm_new
)
1621 ret
= drv
->pcm_new(rtd
, dais
[i
]);
1623 dev_err(dais
[i
]->dev
,
1624 "ASoC: Failed to bind %s with pcm device\n",
1633 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1634 struct snd_soc_dai_link
*dai_link
,
1635 struct snd_soc_pcm_runtime
*rtd
)
1637 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1638 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1639 struct snd_soc_dapm_widget
*sink
, *source
;
1642 if (rtd
->num_codecs
> 1)
1643 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1645 /* link the DAI widgets */
1646 sink
= codec_dai
->playback_widget
;
1647 source
= cpu_dai
->capture_widget
;
1648 if (sink
&& source
) {
1649 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1650 dai_link
->num_params
,
1653 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1654 sink
->name
, source
->name
, ret
);
1659 sink
= cpu_dai
->playback_widget
;
1660 source
= codec_dai
->capture_widget
;
1661 if (sink
&& source
) {
1662 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1663 dai_link
->num_params
,
1666 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1667 sink
->name
, source
->name
, ret
);
1675 static int soc_probe_link_dais(struct snd_soc_card
*card
,
1676 struct snd_soc_pcm_runtime
*rtd
, int order
)
1678 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
1679 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1682 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1683 card
->name
, rtd
->num
, order
);
1685 /* set default power off timeout */
1686 rtd
->pmdown_time
= pmdown_time
;
1688 ret
= soc_probe_dai(cpu_dai
, order
);
1692 /* probe the CODEC DAI */
1693 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1694 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1699 /* complete DAI probe during last probe */
1700 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1703 /* do machine specific initialization */
1704 if (dai_link
->init
) {
1705 ret
= dai_link
->init(rtd
);
1707 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1708 dai_link
->name
, ret
);
1713 if (dai_link
->dai_fmt
)
1714 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1716 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1720 #ifdef CONFIG_DEBUG_FS
1721 /* add DPCM sysfs entries */
1722 if (dai_link
->dynamic
)
1723 soc_dpcm_debugfs_add(rtd
);
1726 if (cpu_dai
->driver
->compress_new
) {
1727 /*create compress_device"*/
1728 ret
= cpu_dai
->driver
->compress_new(rtd
, rtd
->num
);
1730 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1731 dai_link
->stream_name
);
1736 if (!dai_link
->params
) {
1737 /* create the pcm */
1738 ret
= soc_new_pcm(rtd
, rtd
->num
);
1740 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1741 dai_link
->stream_name
, ret
);
1744 ret
= soc_link_dai_pcm_new(&cpu_dai
, 1, rtd
);
1747 ret
= soc_link_dai_pcm_new(rtd
->codec_dais
,
1748 rtd
->num_codecs
, rtd
);
1752 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1753 codec2codec_close_delayed_work
);
1755 /* link the DAI widgets */
1756 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1765 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1767 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1768 struct snd_soc_component
*component
;
1770 struct device_node
*codec_of_node
;
1772 if (aux_dev
->codec_of_node
|| aux_dev
->codec_name
) {
1773 /* codecs, usually analog devices */
1774 name
= aux_dev
->codec_name
;
1775 codec_of_node
= aux_dev
->codec_of_node
;
1776 component
= soc_find_component(codec_of_node
, name
);
1779 name
= of_node_full_name(codec_of_node
);
1782 } else if (aux_dev
->name
) {
1783 /* generic components */
1784 name
= aux_dev
->name
;
1785 component
= soc_find_component(NULL
, name
);
1789 dev_err(card
->dev
, "ASoC: Invalid auxiliary device\n");
1793 component
->init
= aux_dev
->init
;
1794 list_add(&component
->card_aux_list
, &card
->aux_comp_list
);
1799 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1800 return -EPROBE_DEFER
;
1803 static int soc_probe_aux_devices(struct snd_soc_card
*card
)
1805 struct snd_soc_component
*comp
;
1809 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1811 list_for_each_entry(comp
, &card
->aux_comp_list
, card_aux_list
) {
1812 if (comp
->driver
->probe_order
== order
) {
1813 ret
= soc_probe_component(card
, comp
);
1816 "ASoC: failed to probe aux component %s %d\n",
1827 static void soc_remove_aux_devices(struct snd_soc_card
*card
)
1829 struct snd_soc_component
*comp
, *_comp
;
1832 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1834 list_for_each_entry_safe(comp
, _comp
,
1835 &card
->aux_comp_list
, card_aux_list
) {
1837 if (comp
->driver
->remove_order
== order
) {
1838 soc_remove_component(comp
);
1839 /* remove it from the card's aux_comp_list */
1840 list_del(&comp
->card_aux_list
);
1846 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1850 if (codec
->cache_init
)
1853 ret
= snd_soc_cache_init(codec
);
1856 "ASoC: Failed to set cache compression type: %d\n",
1860 codec
->cache_init
= 1;
1865 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1866 * @rtd: The runtime for which the DAI link format should be changed
1867 * @dai_fmt: The new DAI link format
1869 * This function updates the DAI link format for all DAIs connected to the DAI
1870 * link for the specified runtime.
1872 * Note: For setups with a static format set the dai_fmt field in the
1873 * corresponding snd_dai_link struct instead of using this function.
1875 * Returns 0 on success, otherwise a negative error code.
1877 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1878 unsigned int dai_fmt
)
1880 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1881 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1885 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1886 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1888 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1889 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1890 dev_warn(codec_dai
->dev
,
1891 "ASoC: Failed to set DAI format: %d\n", ret
);
1896 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1897 if (cpu_dai
->codec
) {
1898 unsigned int inv_dai_fmt
;
1900 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1901 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1902 case SND_SOC_DAIFMT_CBM_CFM
:
1903 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1905 case SND_SOC_DAIFMT_CBM_CFS
:
1906 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1908 case SND_SOC_DAIFMT_CBS_CFM
:
1909 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1911 case SND_SOC_DAIFMT_CBS_CFS
:
1912 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1916 dai_fmt
= inv_dai_fmt
;
1919 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1920 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1921 dev_warn(cpu_dai
->dev
,
1922 "ASoC: Failed to set DAI format: %d\n", ret
);
1928 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1932 /* Trim special characters, and replace '-' with '_' since '-' is used to
1933 * separate different DMI fields in the card long name. Only number and
1934 * alphabet characters and a few separator characters are kept.
1936 static void cleanup_dmi_name(char *name
)
1940 for (i
= 0; name
[i
]; i
++) {
1941 if (isalnum(name
[i
]) || (name
[i
] == '.')
1942 || (name
[i
] == '_'))
1943 name
[j
++] = name
[i
];
1944 else if (name
[i
] == '-')
1951 /* Check if a DMI field is valid, i.e. not containing any string
1952 * in the black list.
1954 static int is_dmi_valid(const char *field
)
1958 while (dmi_blacklist
[i
]) {
1959 if (strstr(field
, dmi_blacklist
[i
]))
1968 * snd_soc_set_dmi_name() - Register DMI names to card
1969 * @card: The card to register DMI names
1970 * @flavour: The flavour "differentiator" for the card amongst its peers.
1972 * An Intel machine driver may be used by many different devices but are
1973 * difficult for userspace to differentiate, since machine drivers ususally
1974 * use their own name as the card short name and leave the card long name
1975 * blank. To differentiate such devices and fix bugs due to lack of
1976 * device-specific configurations, this function allows DMI info to be used
1977 * as the sound card long name, in the format of
1978 * "vendor-product-version-board"
1979 * (Character '-' is used to separate different DMI fields here).
1980 * This will help the user space to load the device-specific Use Case Manager
1981 * (UCM) configurations for the card.
1983 * Possible card long names may be:
1984 * DellInc.-XPS139343-01-0310JH
1985 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
1986 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
1988 * This function also supports flavoring the card longname to provide
1989 * the extra differentiation, like "vendor-product-version-board-flavor".
1991 * We only keep number and alphabet characters and a few separator characters
1992 * in the card long name since UCM in the user space uses the card long names
1993 * as card configuration directory names and AudoConf cannot support special
1994 * charactors like SPACE.
1996 * Returns 0 on success, otherwise a negative error code.
1998 int snd_soc_set_dmi_name(struct snd_soc_card
*card
, const char *flavour
)
2000 const char *vendor
, *product
, *product_version
, *board
;
2001 size_t longname_buf_size
= sizeof(card
->snd_card
->longname
);
2004 if (card
->long_name
)
2005 return 0; /* long name already set by driver or from DMI */
2007 /* make up dmi long name as: vendor.product.version.board */
2008 vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
2009 if (!vendor
|| !is_dmi_valid(vendor
)) {
2010 dev_warn(card
->dev
, "ASoC: no DMI vendor name!\n");
2015 snprintf(card
->dmi_longname
, sizeof(card
->snd_card
->longname
),
2017 cleanup_dmi_name(card
->dmi_longname
);
2019 product
= dmi_get_system_info(DMI_PRODUCT_NAME
);
2020 if (product
&& is_dmi_valid(product
)) {
2021 len
= strlen(card
->dmi_longname
);
2022 snprintf(card
->dmi_longname
+ len
,
2023 longname_buf_size
- len
,
2026 len
++; /* skip the separator "-" */
2027 if (len
< longname_buf_size
)
2028 cleanup_dmi_name(card
->dmi_longname
+ len
);
2030 /* some vendors like Lenovo may only put a self-explanatory
2031 * name in the product version field
2033 product_version
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
2034 if (product_version
&& is_dmi_valid(product_version
)) {
2035 len
= strlen(card
->dmi_longname
);
2036 snprintf(card
->dmi_longname
+ len
,
2037 longname_buf_size
- len
,
2038 "-%s", product_version
);
2041 if (len
< longname_buf_size
)
2042 cleanup_dmi_name(card
->dmi_longname
+ len
);
2046 board
= dmi_get_system_info(DMI_BOARD_NAME
);
2047 if (board
&& is_dmi_valid(board
)) {
2048 len
= strlen(card
->dmi_longname
);
2049 snprintf(card
->dmi_longname
+ len
,
2050 longname_buf_size
- len
,
2054 if (len
< longname_buf_size
)
2055 cleanup_dmi_name(card
->dmi_longname
+ len
);
2056 } else if (!product
) {
2057 /* fall back to using legacy name */
2058 dev_warn(card
->dev
, "ASoC: no DMI board/product name!\n");
2062 /* Add flavour to dmi long name */
2064 len
= strlen(card
->dmi_longname
);
2065 snprintf(card
->dmi_longname
+ len
,
2066 longname_buf_size
- len
,
2070 if (len
< longname_buf_size
)
2071 cleanup_dmi_name(card
->dmi_longname
+ len
);
2074 /* set the card long name */
2075 card
->long_name
= card
->dmi_longname
;
2079 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name
);
2080 #endif /* CONFIG_DMI */
2082 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
2084 struct snd_soc_codec
*codec
;
2085 struct snd_soc_pcm_runtime
*rtd
;
2086 struct snd_soc_dai_link
*dai_link
;
2089 mutex_lock(&client_mutex
);
2090 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
2093 for (i
= 0; i
< card
->num_links
; i
++) {
2094 ret
= soc_bind_dai_link(card
, &card
->dai_link
[i
]);
2099 /* bind aux_devs too */
2100 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
2101 ret
= soc_bind_aux_dev(card
, i
);
2106 /* add predefined DAI links to the list */
2107 for (i
= 0; i
< card
->num_links
; i
++)
2108 snd_soc_add_dai_link(card
, card
->dai_link
+i
);
2110 /* initialize the register cache for each available codec */
2111 list_for_each_entry(codec
, &codec_list
, list
) {
2112 if (codec
->cache_init
)
2114 ret
= snd_soc_init_codec_cache(codec
);
2119 /* card bind complete so register a sound card */
2120 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
2121 card
->owner
, 0, &card
->snd_card
);
2124 "ASoC: can't create sound card for card %s: %d\n",
2129 soc_init_card_debugfs(card
);
2131 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
2132 card
->dapm
.dev
= card
->dev
;
2133 card
->dapm
.card
= card
;
2134 list_add(&card
->dapm
.list
, &card
->dapm_list
);
2136 #ifdef CONFIG_DEBUG_FS
2137 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
2140 #ifdef CONFIG_PM_SLEEP
2141 /* deferred resume work */
2142 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
2145 if (card
->dapm_widgets
)
2146 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
2147 card
->num_dapm_widgets
);
2149 if (card
->of_dapm_widgets
)
2150 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
2151 card
->num_of_dapm_widgets
);
2153 /* initialise the sound card only once */
2155 ret
= card
->probe(card
);
2157 goto card_probe_error
;
2160 /* probe all components used by DAI links on this card */
2161 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2163 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2164 ret
= soc_probe_link_components(card
, rtd
, order
);
2167 "ASoC: failed to instantiate card %d\n",
2174 /* probe auxiliary components */
2175 ret
= soc_probe_aux_devices(card
);
2179 /* Find new DAI links added during probing components and bind them.
2180 * Components with topology may bring new DAIs and DAI links.
2182 list_for_each_entry(dai_link
, &card
->dai_link_list
, list
) {
2183 if (soc_is_dai_link_bound(card
, dai_link
))
2186 ret
= soc_init_dai_link(card
, dai_link
);
2189 ret
= soc_bind_dai_link(card
, dai_link
);
2194 /* probe all DAI links on this card */
2195 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2197 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2198 ret
= soc_probe_link_dais(card
, rtd
, order
);
2201 "ASoC: failed to instantiate card %d\n",
2208 snd_soc_dapm_link_dai_widgets(card
);
2209 snd_soc_dapm_connect_dai_link_widgets(card
);
2212 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
2214 if (card
->dapm_routes
)
2215 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
2216 card
->num_dapm_routes
);
2218 if (card
->of_dapm_routes
)
2219 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
2220 card
->num_of_dapm_routes
);
2222 /* try to set some sane longname if DMI is available */
2223 snd_soc_set_dmi_name(card
, NULL
);
2225 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
2227 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
2228 "%s", card
->long_name
? card
->long_name
: card
->name
);
2229 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
2230 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
2231 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
2232 switch (card
->snd_card
->driver
[i
]) {
2238 if (!isalnum(card
->snd_card
->driver
[i
]))
2239 card
->snd_card
->driver
[i
] = '_';
2244 if (card
->late_probe
) {
2245 ret
= card
->late_probe(card
);
2247 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
2249 goto probe_aux_dev_err
;
2253 snd_soc_dapm_new_widgets(card
);
2255 ret
= snd_card_register(card
->snd_card
);
2257 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
2259 goto probe_aux_dev_err
;
2262 card
->instantiated
= 1;
2263 snd_soc_dapm_sync(&card
->dapm
);
2264 mutex_unlock(&card
->mutex
);
2265 mutex_unlock(&client_mutex
);
2270 soc_remove_aux_devices(card
);
2273 soc_remove_dai_links(card
);
2279 snd_soc_dapm_free(&card
->dapm
);
2280 soc_cleanup_card_debugfs(card
);
2281 snd_card_free(card
->snd_card
);
2284 soc_remove_pcm_runtimes(card
);
2285 mutex_unlock(&card
->mutex
);
2286 mutex_unlock(&client_mutex
);
2291 /* probes a new socdev */
2292 static int soc_probe(struct platform_device
*pdev
)
2294 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2297 * no card, so machine driver should be registering card
2298 * we should not be here in that case so ret error
2303 dev_warn(&pdev
->dev
,
2304 "ASoC: machine %s should use snd_soc_register_card()\n",
2307 /* Bodge while we unpick instantiation */
2308 card
->dev
= &pdev
->dev
;
2310 return snd_soc_register_card(card
);
2313 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2315 struct snd_soc_pcm_runtime
*rtd
;
2317 /* make sure any delayed work runs */
2318 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2319 flush_delayed_work(&rtd
->delayed_work
);
2321 /* free the ALSA card at first; this syncs with pending operations */
2322 snd_card_free(card
->snd_card
);
2324 /* remove and free each DAI */
2325 soc_remove_dai_links(card
);
2326 soc_remove_pcm_runtimes(card
);
2328 /* remove auxiliary devices */
2329 soc_remove_aux_devices(card
);
2331 snd_soc_dapm_free(&card
->dapm
);
2332 soc_cleanup_card_debugfs(card
);
2334 /* remove the card */
2341 /* removes a socdev */
2342 static int soc_remove(struct platform_device
*pdev
)
2344 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2346 snd_soc_unregister_card(card
);
2350 int snd_soc_poweroff(struct device
*dev
)
2352 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2353 struct snd_soc_pcm_runtime
*rtd
;
2355 if (!card
->instantiated
)
2358 /* Flush out pmdown_time work - we actually do want to run it
2359 * now, we're shutting down so no imminent restart. */
2360 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2361 flush_delayed_work(&rtd
->delayed_work
);
2363 snd_soc_dapm_shutdown(card
);
2365 /* deactivate pins to sleep state */
2366 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2367 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2370 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2371 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2372 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
2373 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2379 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2381 const struct dev_pm_ops snd_soc_pm_ops
= {
2382 .suspend
= snd_soc_suspend
,
2383 .resume
= snd_soc_resume
,
2384 .freeze
= snd_soc_suspend
,
2385 .thaw
= snd_soc_resume
,
2386 .poweroff
= snd_soc_poweroff
,
2387 .restore
= snd_soc_resume
,
2389 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2391 /* ASoC platform driver */
2392 static struct platform_driver soc_driver
= {
2394 .name
= "soc-audio",
2395 .pm
= &snd_soc_pm_ops
,
2398 .remove
= soc_remove
,
2402 * snd_soc_cnew - create new control
2403 * @_template: control template
2404 * @data: control private data
2405 * @long_name: control long name
2406 * @prefix: control name prefix
2408 * Create a new mixer control from a template control.
2410 * Returns 0 for success, else error.
2412 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2413 void *data
, const char *long_name
,
2416 struct snd_kcontrol_new
template;
2417 struct snd_kcontrol
*kcontrol
;
2420 memcpy(&template, _template
, sizeof(template));
2424 long_name
= template.name
;
2427 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2431 template.name
= name
;
2433 template.name
= long_name
;
2436 kcontrol
= snd_ctl_new1(&template, data
);
2442 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2444 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2445 const struct snd_kcontrol_new
*controls
, int num_controls
,
2446 const char *prefix
, void *data
)
2450 for (i
= 0; i
< num_controls
; i
++) {
2451 const struct snd_kcontrol_new
*control
= &controls
[i
];
2452 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2453 control
->name
, prefix
));
2455 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2456 control
->name
, err
);
2464 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2467 struct snd_card
*card
= soc_card
->snd_card
;
2468 struct snd_kcontrol
*kctl
;
2470 if (unlikely(!name
))
2473 list_for_each_entry(kctl
, &card
->controls
, list
)
2474 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2478 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2481 * snd_soc_add_component_controls - Add an array of controls to a component.
2483 * @component: Component to add controls to
2484 * @controls: Array of controls to add
2485 * @num_controls: Number of elements in the array
2487 * Return: 0 for success, else error.
2489 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2490 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2492 struct snd_card
*card
= component
->card
->snd_card
;
2494 return snd_soc_add_controls(card
, component
->dev
, controls
,
2495 num_controls
, component
->name_prefix
, component
);
2497 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2500 * snd_soc_add_codec_controls - add an array of controls to a codec.
2501 * Convenience function to add a list of controls. Many codecs were
2502 * duplicating this code.
2504 * @codec: codec to add controls to
2505 * @controls: array of controls to add
2506 * @num_controls: number of elements in the array
2508 * Return 0 for success, else error.
2510 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2511 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2513 return snd_soc_add_component_controls(&codec
->component
, controls
,
2516 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2519 * snd_soc_add_platform_controls - add an array of controls to a platform.
2520 * Convenience function to add a list of controls.
2522 * @platform: platform to add controls to
2523 * @controls: array of controls to add
2524 * @num_controls: number of elements in the array
2526 * Return 0 for success, else error.
2528 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2529 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2531 return snd_soc_add_component_controls(&platform
->component
, controls
,
2534 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2537 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2538 * Convenience function to add a list of controls.
2540 * @soc_card: SoC card to add controls to
2541 * @controls: array of controls to add
2542 * @num_controls: number of elements in the array
2544 * Return 0 for success, else error.
2546 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2547 const struct snd_kcontrol_new
*controls
, int num_controls
)
2549 struct snd_card
*card
= soc_card
->snd_card
;
2551 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2554 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2557 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2558 * Convienience function to add a list of controls.
2560 * @dai: DAI to add controls to
2561 * @controls: array of controls to add
2562 * @num_controls: number of elements in the array
2564 * Return 0 for success, else error.
2566 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2567 const struct snd_kcontrol_new
*controls
, int num_controls
)
2569 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2571 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2574 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2577 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2579 * @clk_id: DAI specific clock ID
2580 * @freq: new clock frequency in Hz
2581 * @dir: new clock direction - input/output.
2583 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2585 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2586 unsigned int freq
, int dir
)
2588 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2589 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2590 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2591 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2596 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2599 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2601 * @clk_id: DAI specific clock ID
2602 * @source: Source for the clock
2603 * @freq: new clock frequency in Hz
2604 * @dir: new clock direction - input/output.
2606 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2608 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2609 int source
, unsigned int freq
, int dir
)
2611 if (codec
->driver
->set_sysclk
)
2612 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2617 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2620 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2622 * @div_id: DAI specific clock divider ID
2623 * @div: new clock divisor.
2625 * Configures the clock dividers. This is used to derive the best DAI bit and
2626 * frame clocks from the system or master clock. It's best to set the DAI bit
2627 * and frame clocks as low as possible to save system power.
2629 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2630 int div_id
, int div
)
2632 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2633 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2637 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2640 * snd_soc_dai_set_pll - configure DAI PLL.
2642 * @pll_id: DAI specific PLL ID
2643 * @source: DAI specific source for the PLL
2644 * @freq_in: PLL input clock frequency in Hz
2645 * @freq_out: requested PLL output clock frequency in Hz
2647 * Configures and enables PLL to generate output clock based on input clock.
2649 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2650 unsigned int freq_in
, unsigned int freq_out
)
2652 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2653 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2655 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2656 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2661 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2664 * snd_soc_codec_set_pll - configure codec PLL.
2666 * @pll_id: DAI specific PLL ID
2667 * @source: DAI specific source for the PLL
2668 * @freq_in: PLL input clock frequency in Hz
2669 * @freq_out: requested PLL output clock frequency in Hz
2671 * Configures and enables PLL to generate output clock based on input clock.
2673 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2674 unsigned int freq_in
, unsigned int freq_out
)
2676 if (codec
->driver
->set_pll
)
2677 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2682 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2685 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2687 * @ratio: Ratio of BCLK to Sample rate.
2689 * Configures the DAI for a preset BCLK to sample rate ratio.
2691 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2693 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2694 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2698 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2701 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2703 * @fmt: SND_SOC_DAIFMT_ format value.
2705 * Configures the DAI hardware format and clocking.
2707 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2709 if (dai
->driver
== NULL
)
2711 if (dai
->driver
->ops
->set_fmt
== NULL
)
2713 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2715 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2718 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2719 * @slots: Number of slots in use.
2720 * @tx_mask: bitmask representing active TX slots.
2721 * @rx_mask: bitmask representing active RX slots.
2723 * Generates the TDM tx and rx slot default masks for DAI.
2725 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2726 unsigned int *tx_mask
,
2727 unsigned int *rx_mask
)
2729 if (*tx_mask
|| *rx_mask
)
2735 *tx_mask
= (1 << slots
) - 1;
2736 *rx_mask
= (1 << slots
) - 1;
2742 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2743 * @dai: The DAI to configure
2744 * @tx_mask: bitmask representing active TX slots.
2745 * @rx_mask: bitmask representing active RX slots.
2746 * @slots: Number of slots in use.
2747 * @slot_width: Width in bits for each slot.
2749 * This function configures the specified DAI for TDM operation. @slot contains
2750 * the total number of slots of the TDM stream and @slot_with the width of each
2751 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2752 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2753 * DAI should write to or read from. If a bit is set the corresponding slot is
2754 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2755 * the first slot, bit 1 to the second slot and so on. The first active slot
2756 * maps to the first channel of the DAI, the second active slot to the second
2757 * channel and so on.
2759 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2760 * @rx_mask and @slot_width will be ignored.
2762 * Returns 0 on success, a negative error code otherwise.
2764 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2765 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2767 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2768 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2769 &tx_mask
, &rx_mask
);
2771 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2773 dai
->tx_mask
= tx_mask
;
2774 dai
->rx_mask
= rx_mask
;
2776 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2777 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2782 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2785 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2787 * @tx_num: how many TX channels
2788 * @tx_slot: pointer to an array which imply the TX slot number channel
2790 * @rx_num: how many RX channels
2791 * @rx_slot: pointer to an array which imply the RX slot number channel
2794 * configure the relationship between channel number and TDM slot number.
2796 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2797 unsigned int tx_num
, unsigned int *tx_slot
,
2798 unsigned int rx_num
, unsigned int *rx_slot
)
2800 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2801 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2806 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2809 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2811 * @tristate: tristate enable
2813 * Tristates the DAI so that others can use it.
2815 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2817 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2818 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2822 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2825 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2827 * @mute: mute enable
2828 * @direction: stream to mute
2830 * Mutes the DAI DAC.
2832 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2838 if (dai
->driver
->ops
->mute_stream
)
2839 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2840 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2841 dai
->driver
->ops
->digital_mute
)
2842 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2846 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2849 * snd_soc_register_card - Register a card with the ASoC core
2851 * @card: Card to register
2854 int snd_soc_register_card(struct snd_soc_card
*card
)
2857 struct snd_soc_pcm_runtime
*rtd
;
2859 if (!card
->name
|| !card
->dev
)
2862 for (i
= 0; i
< card
->num_links
; i
++) {
2863 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2865 ret
= soc_init_dai_link(card
, link
);
2867 dev_err(card
->dev
, "ASoC: failed to init link %s\n",
2873 dev_set_drvdata(card
->dev
, card
);
2875 snd_soc_initialize_card_lists(card
);
2877 INIT_LIST_HEAD(&card
->dai_link_list
);
2878 card
->num_dai_links
= 0;
2880 INIT_LIST_HEAD(&card
->rtd_list
);
2883 INIT_LIST_HEAD(&card
->dapm_dirty
);
2884 INIT_LIST_HEAD(&card
->dobj_list
);
2885 card
->instantiated
= 0;
2886 mutex_init(&card
->mutex
);
2887 mutex_init(&card
->dapm_mutex
);
2889 ret
= snd_soc_instantiate_card(card
);
2893 /* deactivate pins to sleep state */
2894 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2895 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2898 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2899 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2900 if (!codec_dai
->active
)
2901 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2904 if (!cpu_dai
->active
)
2905 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2910 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2913 * snd_soc_unregister_card - Unregister a card with the ASoC core
2915 * @card: Card to unregister
2918 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2920 if (card
->instantiated
) {
2921 card
->instantiated
= false;
2922 snd_soc_dapm_shutdown(card
);
2923 soc_cleanup_card_resources(card
);
2924 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2929 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2932 * Simplify DAI link configuration by removing ".-1" from device names
2933 * and sanitizing names.
2935 static char *fmt_single_name(struct device
*dev
, int *id
)
2937 char *found
, name
[NAME_SIZE
];
2940 if (dev_name(dev
) == NULL
)
2943 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2945 /* are we a "%s.%d" name (platform and SPI components) */
2946 found
= strstr(name
, dev
->driver
->name
);
2949 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2951 /* discard ID from name if ID == -1 */
2953 found
[strlen(dev
->driver
->name
)] = '\0';
2957 /* I2C component devices are named "bus-addr" */
2958 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2959 char tmp
[NAME_SIZE
];
2961 /* create unique ID number from I2C addr and bus */
2962 *id
= ((id1
& 0xffff) << 16) + id2
;
2964 /* sanitize component name for DAI link creation */
2965 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2966 strlcpy(name
, tmp
, NAME_SIZE
);
2971 return kstrdup(name
, GFP_KERNEL
);
2975 * Simplify DAI link naming for single devices with multiple DAIs by removing
2976 * any ".-1" and using the DAI name (instead of device name).
2978 static inline char *fmt_multiple_name(struct device
*dev
,
2979 struct snd_soc_dai_driver
*dai_drv
)
2981 if (dai_drv
->name
== NULL
) {
2983 "ASoC: error - multiple DAI %s registered with no name\n",
2988 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2992 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2994 * @component: The component for which the DAIs should be unregistered
2996 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
2998 struct snd_soc_dai
*dai
, *_dai
;
3000 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3001 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3003 list_del(&dai
->list
);
3009 /* Create a DAI and add it to the component's DAI list */
3010 static struct snd_soc_dai
*soc_add_dai(struct snd_soc_component
*component
,
3011 struct snd_soc_dai_driver
*dai_drv
,
3012 bool legacy_dai_naming
)
3014 struct device
*dev
= component
->dev
;
3015 struct snd_soc_dai
*dai
;
3017 dev_dbg(dev
, "ASoC: dynamically register DAI %s\n", dev_name(dev
));
3019 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3024 * Back in the old days when we still had component-less DAIs,
3025 * instead of having a static name, component-less DAIs would
3026 * inherit the name of the parent device so it is possible to
3027 * register multiple instances of the DAI. We still need to keep
3028 * the same naming style even though those DAIs are not
3029 * component-less anymore.
3031 if (legacy_dai_naming
&&
3032 (dai_drv
->id
== 0 || dai_drv
->name
== NULL
)) {
3033 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3035 dai
->name
= fmt_multiple_name(dev
, dai_drv
);
3037 dai
->id
= dai_drv
->id
;
3039 dai
->id
= component
->num_dai
;
3041 if (dai
->name
== NULL
) {
3046 dai
->component
= component
;
3048 dai
->driver
= dai_drv
;
3049 if (!dai
->driver
->ops
)
3050 dai
->driver
->ops
= &null_dai_ops
;
3052 list_add(&dai
->list
, &component
->dai_list
);
3053 component
->num_dai
++;
3055 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3060 * snd_soc_register_dais - Register a DAI with the ASoC core
3062 * @component: The component the DAIs are registered for
3063 * @dai_drv: DAI driver to use for the DAIs
3064 * @count: Number of DAIs
3065 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3068 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3069 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
3070 bool legacy_dai_naming
)
3072 struct device
*dev
= component
->dev
;
3073 struct snd_soc_dai
*dai
;
3077 dev_dbg(dev
, "ASoC: dai register %s #%zu\n", dev_name(dev
), count
);
3079 component
->dai_drv
= dai_drv
;
3081 for (i
= 0; i
< count
; i
++) {
3083 dai
= soc_add_dai(component
, dai_drv
+ i
,
3084 count
== 1 && legacy_dai_naming
);
3094 snd_soc_unregister_dais(component
);
3100 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3102 * @component: The component the DAIs are registered for
3103 * @dai_drv: DAI driver to use for the DAI
3105 * Topology can use this API to register DAIs when probing a component.
3106 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3107 * will be freed in the component cleanup.
3109 int snd_soc_register_dai(struct snd_soc_component
*component
,
3110 struct snd_soc_dai_driver
*dai_drv
)
3112 struct snd_soc_dapm_context
*dapm
=
3113 snd_soc_component_get_dapm(component
);
3114 struct snd_soc_dai
*dai
;
3117 if (dai_drv
->dobj
.type
!= SND_SOC_DOBJ_PCM
) {
3118 dev_err(component
->dev
, "Invalid dai type %d\n",
3119 dai_drv
->dobj
.type
);
3123 lockdep_assert_held(&client_mutex
);
3124 dai
= soc_add_dai(component
, dai_drv
, false);
3128 /* Create the DAI widgets here. After adding DAIs, topology may
3129 * also add routes that need these widgets as source or sink.
3131 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
3133 dev_err(component
->dev
,
3134 "Failed to create DAI widgets %d\n", ret
);
3139 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3141 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
3142 enum snd_soc_dapm_type type
, int subseq
)
3144 struct snd_soc_component
*component
= dapm
->component
;
3146 component
->driver
->seq_notifier(component
, type
, subseq
);
3149 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
3152 struct snd_soc_component
*component
= dapm
->component
;
3154 return component
->driver
->stream_event(component
, event
);
3157 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
3158 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
3160 struct snd_soc_dapm_context
*dapm
;
3162 component
->name
= fmt_single_name(dev
, &component
->id
);
3163 if (!component
->name
) {
3164 dev_err(dev
, "ASoC: Failed to allocate name\n");
3168 component
->dev
= dev
;
3169 component
->driver
= driver
;
3170 component
->probe
= component
->driver
->probe
;
3171 component
->remove
= component
->driver
->remove
;
3172 component
->suspend
= component
->driver
->suspend
;
3173 component
->resume
= component
->driver
->resume
;
3175 dapm
= &component
->dapm
;
3177 dapm
->component
= component
;
3178 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
3179 dapm
->idle_bias_off
= true;
3180 if (driver
->seq_notifier
)
3181 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
3182 if (driver
->stream_event
)
3183 dapm
->stream_event
= snd_soc_component_stream_event
;
3185 component
->controls
= driver
->controls
;
3186 component
->num_controls
= driver
->num_controls
;
3187 component
->dapm_widgets
= driver
->dapm_widgets
;
3188 component
->num_dapm_widgets
= driver
->num_dapm_widgets
;
3189 component
->dapm_routes
= driver
->dapm_routes
;
3190 component
->num_dapm_routes
= driver
->num_dapm_routes
;
3192 INIT_LIST_HEAD(&component
->dai_list
);
3193 mutex_init(&component
->io_mutex
);
3198 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
3200 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
3202 /* Errors are legitimate for non-integer byte multiples */
3204 component
->val_bytes
= val_bytes
;
3207 #ifdef CONFIG_REGMAP
3210 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3211 * @component: The component for which to initialize the regmap instance
3212 * @regmap: The regmap instance that should be used by the component
3214 * This function allows deferred assignment of the regmap instance that is
3215 * associated with the component. Only use this if the regmap instance is not
3216 * yet ready when the component is registered. The function must also be called
3217 * before the first IO attempt of the component.
3219 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
3220 struct regmap
*regmap
)
3222 component
->regmap
= regmap
;
3223 snd_soc_component_setup_regmap(component
);
3225 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
3228 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3229 * @component: The component for which to de-initialize the regmap instance
3231 * Calls regmap_exit() on the regmap instance associated to the component and
3232 * removes the regmap instance from the component.
3234 * This function should only be used if snd_soc_component_init_regmap() was used
3235 * to initialize the regmap instance.
3237 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
3239 regmap_exit(component
->regmap
);
3240 component
->regmap
= NULL
;
3242 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
3246 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
3248 if (!component
->write
&& !component
->read
) {
3249 if (!component
->regmap
)
3250 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
3251 if (component
->regmap
)
3252 snd_soc_component_setup_regmap(component
);
3255 list_add(&component
->list
, &component_list
);
3256 INIT_LIST_HEAD(&component
->dobj_list
);
3259 static void snd_soc_component_add(struct snd_soc_component
*component
)
3261 mutex_lock(&client_mutex
);
3262 snd_soc_component_add_unlocked(component
);
3263 mutex_unlock(&client_mutex
);
3266 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
3268 snd_soc_unregister_dais(component
);
3269 kfree(component
->name
);
3272 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
3274 struct snd_soc_card
*card
= component
->card
;
3277 snd_soc_unregister_card(card
);
3279 list_del(&component
->list
);
3282 int snd_soc_register_component(struct device
*dev
,
3283 const struct snd_soc_component_driver
*cmpnt_drv
,
3284 struct snd_soc_dai_driver
*dai_drv
,
3287 struct snd_soc_component
*cmpnt
;
3290 cmpnt
= kzalloc(sizeof(*cmpnt
), GFP_KERNEL
);
3292 dev_err(dev
, "ASoC: Failed to allocate memory\n");
3296 ret
= snd_soc_component_initialize(cmpnt
, cmpnt_drv
, dev
);
3300 cmpnt
->ignore_pmdown_time
= true;
3301 cmpnt
->registered_as_component
= true;
3303 ret
= snd_soc_register_dais(cmpnt
, dai_drv
, num_dai
, true);
3305 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3309 snd_soc_component_add(cmpnt
);
3314 snd_soc_component_cleanup(cmpnt
);
3319 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
3322 * snd_soc_unregister_component - Unregister a component from the ASoC core
3324 * @dev: The device to unregister
3326 void snd_soc_unregister_component(struct device
*dev
)
3328 struct snd_soc_component
*cmpnt
;
3330 mutex_lock(&client_mutex
);
3331 list_for_each_entry(cmpnt
, &component_list
, list
) {
3332 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
3335 mutex_unlock(&client_mutex
);
3339 snd_soc_tplg_component_remove(cmpnt
, SND_SOC_TPLG_INDEX_ALL
);
3340 snd_soc_component_del_unlocked(cmpnt
);
3341 mutex_unlock(&client_mutex
);
3342 snd_soc_component_cleanup(cmpnt
);
3345 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
3347 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
3349 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3351 return platform
->driver
->probe(platform
);
3354 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
3356 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3358 platform
->driver
->remove(platform
);
3362 * snd_soc_add_platform - Add a platform to the ASoC core
3363 * @dev: The parent device for the platform
3364 * @platform: The platform to add
3365 * @platform_drv: The driver for the platform
3367 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3368 const struct snd_soc_platform_driver
*platform_drv
)
3372 ret
= snd_soc_component_initialize(&platform
->component
,
3373 &platform_drv
->component_driver
, dev
);
3377 platform
->dev
= dev
;
3378 platform
->driver
= platform_drv
;
3380 if (platform_drv
->probe
)
3381 platform
->component
.probe
= snd_soc_platform_drv_probe
;
3382 if (platform_drv
->remove
)
3383 platform
->component
.remove
= snd_soc_platform_drv_remove
;
3385 #ifdef CONFIG_DEBUG_FS
3386 platform
->component
.debugfs_prefix
= "platform";
3389 mutex_lock(&client_mutex
);
3390 snd_soc_component_add_unlocked(&platform
->component
);
3391 list_add(&platform
->list
, &platform_list
);
3392 mutex_unlock(&client_mutex
);
3394 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
3395 platform
->component
.name
);
3399 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3402 * snd_soc_register_platform - Register a platform with the ASoC core
3404 * @dev: The device for the platform
3405 * @platform_drv: The driver for the platform
3407 int snd_soc_register_platform(struct device
*dev
,
3408 const struct snd_soc_platform_driver
*platform_drv
)
3410 struct snd_soc_platform
*platform
;
3413 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3415 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3416 if (platform
== NULL
)
3419 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3425 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3428 * snd_soc_remove_platform - Remove a platform from the ASoC core
3429 * @platform: the platform to remove
3431 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
3434 mutex_lock(&client_mutex
);
3435 list_del(&platform
->list
);
3436 snd_soc_component_del_unlocked(&platform
->component
);
3437 mutex_unlock(&client_mutex
);
3439 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
3440 platform
->component
.name
);
3442 snd_soc_component_cleanup(&platform
->component
);
3444 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
3446 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
3448 struct snd_soc_platform
*platform
;
3450 mutex_lock(&client_mutex
);
3451 list_for_each_entry(platform
, &platform_list
, list
) {
3452 if (dev
== platform
->dev
) {
3453 mutex_unlock(&client_mutex
);
3457 mutex_unlock(&client_mutex
);
3461 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
3464 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3466 * @dev: platform to unregister
3468 void snd_soc_unregister_platform(struct device
*dev
)
3470 struct snd_soc_platform
*platform
;
3472 platform
= snd_soc_lookup_platform(dev
);
3476 snd_soc_remove_platform(platform
);
3479 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3481 static u64 codec_format_map
[] = {
3482 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3483 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3484 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3485 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3486 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3487 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3488 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3489 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3490 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3491 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3492 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3493 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3494 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3495 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3496 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3497 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3500 /* Fix up the DAI formats for endianness: codecs don't actually see
3501 * the endianness of the data but we're using the CPU format
3502 * definitions which do need to include endianness so we ensure that
3503 * codec DAIs always have both big and little endian variants set.
3505 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3509 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3510 if (stream
->formats
& codec_format_map
[i
])
3511 stream
->formats
|= codec_format_map
[i
];
3514 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
3516 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3518 return codec
->driver
->probe(codec
);
3521 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
3523 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3525 codec
->driver
->remove(codec
);
3528 static int snd_soc_codec_drv_suspend(struct snd_soc_component
*component
)
3530 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3532 return codec
->driver
->suspend(codec
);
3535 static int snd_soc_codec_drv_resume(struct snd_soc_component
*component
)
3537 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3539 return codec
->driver
->resume(codec
);
3542 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3543 unsigned int reg
, unsigned int val
)
3545 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3547 return codec
->driver
->write(codec
, reg
, val
);
3550 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3551 unsigned int reg
, unsigned int *val
)
3553 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3555 *val
= codec
->driver
->read(codec
, reg
);
3560 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3561 enum snd_soc_bias_level level
)
3563 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3565 return codec
->driver
->set_bias_level(codec
, level
);
3569 * snd_soc_register_codec - Register a codec with the ASoC core
3571 * @dev: The parent device for this codec
3572 * @codec_drv: Codec driver
3573 * @dai_drv: The associated DAI driver
3574 * @num_dai: Number of DAIs
3576 int snd_soc_register_codec(struct device
*dev
,
3577 const struct snd_soc_codec_driver
*codec_drv
,
3578 struct snd_soc_dai_driver
*dai_drv
,
3581 struct snd_soc_dapm_context
*dapm
;
3582 struct snd_soc_codec
*codec
;
3583 struct snd_soc_dai
*dai
;
3586 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3588 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3592 codec
->component
.codec
= codec
;
3594 ret
= snd_soc_component_initialize(&codec
->component
,
3595 &codec_drv
->component_driver
, dev
);
3599 if (codec_drv
->probe
)
3600 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3601 if (codec_drv
->remove
)
3602 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3603 if (codec_drv
->suspend
)
3604 codec
->component
.suspend
= snd_soc_codec_drv_suspend
;
3605 if (codec_drv
->resume
)
3606 codec
->component
.resume
= snd_soc_codec_drv_resume
;
3607 if (codec_drv
->write
)
3608 codec
->component
.write
= snd_soc_codec_drv_write
;
3609 if (codec_drv
->read
)
3610 codec
->component
.read
= snd_soc_codec_drv_read
;
3611 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3613 dapm
= snd_soc_codec_get_dapm(codec
);
3614 dapm
->idle_bias_off
= codec_drv
->idle_bias_off
;
3615 dapm
->suspend_bias_off
= codec_drv
->suspend_bias_off
;
3616 if (codec_drv
->seq_notifier
)
3617 dapm
->seq_notifier
= codec_drv
->seq_notifier
;
3618 if (codec_drv
->set_bias_level
)
3619 dapm
->set_bias_level
= snd_soc_codec_set_bias_level
;
3621 codec
->driver
= codec_drv
;
3622 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3624 #ifdef CONFIG_DEBUG_FS
3625 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3626 codec
->component
.debugfs_prefix
= "codec";
3629 if (codec_drv
->get_regmap
)
3630 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3632 for (i
= 0; i
< num_dai
; i
++) {
3633 fixup_codec_formats(&dai_drv
[i
].playback
);
3634 fixup_codec_formats(&dai_drv
[i
].capture
);
3637 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3639 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3643 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3646 mutex_lock(&client_mutex
);
3647 snd_soc_component_add_unlocked(&codec
->component
);
3648 list_add(&codec
->list
, &codec_list
);
3649 mutex_unlock(&client_mutex
);
3651 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3652 codec
->component
.name
);
3656 snd_soc_component_cleanup(&codec
->component
);
3661 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3664 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3666 * @dev: codec to unregister
3668 void snd_soc_unregister_codec(struct device
*dev
)
3670 struct snd_soc_codec
*codec
;
3672 mutex_lock(&client_mutex
);
3673 list_for_each_entry(codec
, &codec_list
, list
) {
3674 if (dev
== codec
->dev
)
3677 mutex_unlock(&client_mutex
);
3681 list_del(&codec
->list
);
3682 snd_soc_component_del_unlocked(&codec
->component
);
3683 mutex_unlock(&client_mutex
);
3685 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3686 codec
->component
.name
);
3688 snd_soc_component_cleanup(&codec
->component
);
3689 snd_soc_cache_exit(codec
);
3692 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3694 /* Retrieve a card's name from device tree */
3695 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3696 const char *propname
)
3698 struct device_node
*np
;
3702 pr_err("card->dev is not set before calling %s\n", __func__
);
3706 np
= card
->dev
->of_node
;
3708 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3710 * EINVAL means the property does not exist. This is fine providing
3711 * card->name was previously set, which is checked later in
3712 * snd_soc_register_card.
3714 if (ret
< 0 && ret
!= -EINVAL
) {
3716 "ASoC: Property '%s' could not be read: %d\n",
3723 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3725 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3726 SND_SOC_DAPM_MIC("Microphone", NULL
),
3727 SND_SOC_DAPM_LINE("Line", NULL
),
3728 SND_SOC_DAPM_HP("Headphone", NULL
),
3729 SND_SOC_DAPM_SPK("Speaker", NULL
),
3732 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3733 const char *propname
)
3735 struct device_node
*np
= card
->dev
->of_node
;
3736 struct snd_soc_dapm_widget
*widgets
;
3737 const char *template, *wname
;
3738 int i
, j
, num_widgets
, ret
;
3740 num_widgets
= of_property_count_strings(np
, propname
);
3741 if (num_widgets
< 0) {
3743 "ASoC: Property '%s' does not exist\n", propname
);
3746 if (num_widgets
& 1) {
3748 "ASoC: Property '%s' length is not even\n", propname
);
3754 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3759 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3763 "ASoC: Could not allocate memory for widgets\n");
3767 for (i
= 0; i
< num_widgets
; i
++) {
3768 ret
= of_property_read_string_index(np
, propname
,
3772 "ASoC: Property '%s' index %d read error:%d\n",
3773 propname
, 2 * i
, ret
);
3777 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3778 if (!strncmp(template, simple_widgets
[j
].name
,
3779 strlen(simple_widgets
[j
].name
))) {
3780 widgets
[i
] = simple_widgets
[j
];
3785 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3787 "ASoC: DAPM widget '%s' is not supported\n",
3792 ret
= of_property_read_string_index(np
, propname
,
3797 "ASoC: Property '%s' index %d read error:%d\n",
3798 propname
, (2 * i
) + 1, ret
);
3802 widgets
[i
].name
= wname
;
3805 card
->of_dapm_widgets
= widgets
;
3806 card
->num_of_dapm_widgets
= num_widgets
;
3810 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3812 static int snd_soc_of_get_slot_mask(struct device_node
*np
,
3813 const char *prop_name
,
3817 const __be32
*of_slot_mask
= of_get_property(np
, prop_name
, &val
);
3823 for (i
= 0; i
< val
; i
++)
3824 if (be32_to_cpup(&of_slot_mask
[i
]))
3830 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3831 unsigned int *tx_mask
,
3832 unsigned int *rx_mask
,
3833 unsigned int *slots
,
3834 unsigned int *slot_width
)
3840 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-tx-mask", tx_mask
);
3842 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-rx-mask", rx_mask
);
3844 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3845 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3853 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3854 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
3864 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
3866 void snd_soc_of_parse_audio_prefix(struct snd_soc_card
*card
,
3867 struct snd_soc_codec_conf
*codec_conf
,
3868 struct device_node
*of_node
,
3869 const char *propname
)
3871 struct device_node
*np
= card
->dev
->of_node
;
3875 ret
= of_property_read_string(np
, propname
, &str
);
3877 /* no prefix is not error */
3881 codec_conf
->of_node
= of_node
;
3882 codec_conf
->name_prefix
= str
;
3884 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix
);
3886 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3887 const char *propname
)
3889 struct device_node
*np
= card
->dev
->of_node
;
3891 struct snd_soc_dapm_route
*routes
;
3894 num_routes
= of_property_count_strings(np
, propname
);
3895 if (num_routes
< 0 || num_routes
& 1) {
3897 "ASoC: Property '%s' does not exist or its length is not even\n",
3903 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3908 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3912 "ASoC: Could not allocate DAPM route table\n");
3916 for (i
= 0; i
< num_routes
; i
++) {
3917 ret
= of_property_read_string_index(np
, propname
,
3918 2 * i
, &routes
[i
].sink
);
3921 "ASoC: Property '%s' index %d could not be read: %d\n",
3922 propname
, 2 * i
, ret
);
3925 ret
= of_property_read_string_index(np
, propname
,
3926 (2 * i
) + 1, &routes
[i
].source
);
3929 "ASoC: Property '%s' index %d could not be read: %d\n",
3930 propname
, (2 * i
) + 1, ret
);
3935 card
->num_of_dapm_routes
= num_routes
;
3936 card
->of_dapm_routes
= routes
;
3940 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3942 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
3944 struct device_node
**bitclkmaster
,
3945 struct device_node
**framemaster
)
3949 unsigned int format
= 0;
3955 } of_fmt_table
[] = {
3956 { "i2s", SND_SOC_DAIFMT_I2S
},
3957 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
3958 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
3959 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
3960 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
3961 { "ac97", SND_SOC_DAIFMT_AC97
},
3962 { "pdm", SND_SOC_DAIFMT_PDM
},
3963 { "msb", SND_SOC_DAIFMT_MSB
},
3964 { "lsb", SND_SOC_DAIFMT_LSB
},
3971 * check "dai-format = xxx"
3972 * or "[prefix]format = xxx"
3973 * SND_SOC_DAIFMT_FORMAT_MASK area
3975 ret
= of_property_read_string(np
, "dai-format", &str
);
3977 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
3978 ret
= of_property_read_string(np
, prop
, &str
);
3981 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
3982 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
3983 format
|= of_fmt_table
[i
].val
;
3990 * check "[prefix]continuous-clock"
3991 * SND_SOC_DAIFMT_CLOCK_MASK area
3993 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
3994 if (of_property_read_bool(np
, prop
))
3995 format
|= SND_SOC_DAIFMT_CONT
;
3997 format
|= SND_SOC_DAIFMT_GATED
;
4000 * check "[prefix]bitclock-inversion"
4001 * check "[prefix]frame-inversion"
4002 * SND_SOC_DAIFMT_INV_MASK area
4004 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4005 bit
= !!of_get_property(np
, prop
, NULL
);
4007 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4008 frame
= !!of_get_property(np
, prop
, NULL
);
4010 switch ((bit
<< 4) + frame
) {
4012 format
|= SND_SOC_DAIFMT_IB_IF
;
4015 format
|= SND_SOC_DAIFMT_IB_NF
;
4018 format
|= SND_SOC_DAIFMT_NB_IF
;
4021 /* SND_SOC_DAIFMT_NB_NF is default */
4026 * check "[prefix]bitclock-master"
4027 * check "[prefix]frame-master"
4028 * SND_SOC_DAIFMT_MASTER_MASK area
4030 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4031 bit
= !!of_get_property(np
, prop
, NULL
);
4032 if (bit
&& bitclkmaster
)
4033 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
4035 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4036 frame
= !!of_get_property(np
, prop
, NULL
);
4037 if (frame
&& framemaster
)
4038 *framemaster
= of_parse_phandle(np
, prop
, 0);
4040 switch ((bit
<< 4) + frame
) {
4042 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4045 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4048 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4051 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4057 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4059 int snd_soc_get_dai_id(struct device_node
*ep
)
4061 struct snd_soc_component
*pos
;
4062 struct device_node
*node
;
4065 node
= of_graph_get_port_parent(ep
);
4068 * For example HDMI case, HDMI has video/sound port,
4069 * but ALSA SoC needs sound port number only.
4070 * Thus counting HDMI DT port/endpoint doesn't work.
4071 * Then, it should have .of_xlate_dai_id
4074 mutex_lock(&client_mutex
);
4075 list_for_each_entry(pos
, &component_list
, list
) {
4076 struct device_node
*component_of_node
= pos
->dev
->of_node
;
4078 if (!component_of_node
&& pos
->dev
->parent
)
4079 component_of_node
= pos
->dev
->parent
->of_node
;
4081 if (component_of_node
!= node
)
4084 if (pos
->driver
->of_xlate_dai_id
)
4085 ret
= pos
->driver
->of_xlate_dai_id(pos
, ep
);
4089 mutex_unlock(&client_mutex
);
4095 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id
);
4097 int snd_soc_get_dai_name(struct of_phandle_args
*args
,
4098 const char **dai_name
)
4100 struct snd_soc_component
*pos
;
4101 struct device_node
*component_of_node
;
4102 int ret
= -EPROBE_DEFER
;
4104 mutex_lock(&client_mutex
);
4105 list_for_each_entry(pos
, &component_list
, list
) {
4106 component_of_node
= pos
->dev
->of_node
;
4107 if (!component_of_node
&& pos
->dev
->parent
)
4108 component_of_node
= pos
->dev
->parent
->of_node
;
4110 if (component_of_node
!= args
->np
)
4113 if (pos
->driver
->of_xlate_dai_name
) {
4114 ret
= pos
->driver
->of_xlate_dai_name(pos
,
4120 switch (args
->args_count
) {
4122 id
= 0; /* same as dai_drv[0] */
4132 if (id
< 0 || id
>= pos
->num_dai
) {
4139 *dai_name
= pos
->dai_drv
[id
].name
;
4141 *dai_name
= pos
->name
;
4146 mutex_unlock(&client_mutex
);
4149 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name
);
4151 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4152 const char **dai_name
)
4154 struct of_phandle_args args
;
4157 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4158 "#sound-dai-cells", 0, &args
);
4162 ret
= snd_soc_get_dai_name(&args
, dai_name
);
4164 of_node_put(args
.np
);
4168 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4171 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4173 * @of_node: Device node
4174 * @dai_link: DAI link
4176 * Builds an array of CODEC DAI components from the DAI link property
4178 * The array is set in the DAI link and the number of DAIs is set accordingly.
4179 * The device nodes in the array (of_node) must be dereferenced by the caller.
4181 * Returns 0 for success
4183 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
4184 struct device_node
*of_node
,
4185 struct snd_soc_dai_link
*dai_link
)
4187 struct of_phandle_args args
;
4188 struct snd_soc_dai_link_component
*component
;
4190 int index
, num_codecs
, ret
;
4192 /* Count the number of CODECs */
4194 num_codecs
= of_count_phandle_with_args(of_node
, name
,
4195 "#sound-dai-cells");
4196 if (num_codecs
<= 0) {
4197 if (num_codecs
== -ENOENT
)
4198 dev_err(dev
, "No 'sound-dai' property\n");
4200 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
4203 component
= devm_kzalloc(dev
,
4204 sizeof *component
* num_codecs
,
4208 dai_link
->codecs
= component
;
4209 dai_link
->num_codecs
= num_codecs
;
4211 /* Parse the list */
4212 for (index
= 0, component
= dai_link
->codecs
;
4213 index
< dai_link
->num_codecs
;
4214 index
++, component
++) {
4215 ret
= of_parse_phandle_with_args(of_node
, name
,
4220 component
->of_node
= args
.np
;
4221 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
4227 for (index
= 0, component
= dai_link
->codecs
;
4228 index
< dai_link
->num_codecs
;
4229 index
++, component
++) {
4230 if (!component
->of_node
)
4232 of_node_put(component
->of_node
);
4233 component
->of_node
= NULL
;
4235 dai_link
->codecs
= NULL
;
4236 dai_link
->num_codecs
= 0;
4239 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
4241 static int __init
snd_soc_init(void)
4243 snd_soc_debugfs_init();
4244 snd_soc_util_init();
4246 return platform_driver_register(&soc_driver
);
4248 module_init(snd_soc_init
);
4250 static void __exit
snd_soc_exit(void)
4252 snd_soc_util_exit();
4253 snd_soc_debugfs_exit();
4255 platform_driver_unregister(&soc_driver
);
4257 module_exit(snd_soc_exit
);
4259 /* Module information */
4260 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4261 MODULE_DESCRIPTION("ALSA SoC Core");
4262 MODULE_LICENSE("GPL");
4263 MODULE_ALIAS("platform:soc-audio");