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 <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 #ifdef CONFIG_DEBUG_FS
51 struct dentry
*snd_soc_debugfs_root
;
52 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
55 static DEFINE_MUTEX(client_mutex
);
56 static LIST_HEAD(platform_list
);
57 static LIST_HEAD(codec_list
);
58 static LIST_HEAD(component_list
);
61 * This is a timeout to do a DAPM powerdown after a stream is closed().
62 * It can be used to eliminate pops between different playback streams, e.g.
63 * between two audio tracks.
65 static int pmdown_time
= 5000;
66 module_param(pmdown_time
, int, 0);
67 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
69 /* returns the minimum number of bytes needed to represent
70 * a particular given value */
71 static int min_bytes_needed(unsigned long val
)
76 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
79 c
= (sizeof val
* 8) - c
;
87 /* fill buf which is 'len' bytes with a formatted
88 * string of the form 'reg: value\n' */
89 static int format_register_str(struct snd_soc_codec
*codec
,
90 unsigned int reg
, char *buf
, size_t len
)
92 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
93 int regsize
= codec
->driver
->reg_word_size
* 2;
96 /* +2 for ': ' and + 1 for '\n' */
97 if (wordsize
+ regsize
+ 2 + 1 != len
)
100 sprintf(buf
, "%.*x: ", wordsize
, reg
);
103 ret
= snd_soc_read(codec
, reg
);
105 memset(buf
, 'X', regsize
);
107 sprintf(buf
, "%.*x", regsize
, ret
);
109 /* no NUL-termination needed */
113 /* codec register dump */
114 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
115 size_t count
, loff_t pos
)
118 int wordsize
, regsize
;
123 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
124 regsize
= codec
->driver
->reg_word_size
* 2;
126 len
= wordsize
+ regsize
+ 2 + 1;
128 if (!codec
->driver
->reg_cache_size
)
131 if (codec
->driver
->reg_cache_step
)
132 step
= codec
->driver
->reg_cache_step
;
134 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
135 /* only support larger than PAGE_SIZE bytes debugfs
136 * entries for the default case */
138 if (total
+ len
>= count
- 1)
140 format_register_str(codec
, i
, buf
+ total
, len
);
146 total
= min(total
, count
- 1);
151 static ssize_t
codec_reg_show(struct device
*dev
,
152 struct device_attribute
*attr
, char *buf
)
154 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
156 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
159 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
161 static ssize_t
pmdown_time_show(struct device
*dev
,
162 struct device_attribute
*attr
, char *buf
)
164 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
166 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
169 static ssize_t
pmdown_time_set(struct device
*dev
,
170 struct device_attribute
*attr
,
171 const char *buf
, size_t count
)
173 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
176 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
183 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
185 static struct attribute
*soc_dev_attrs
[] = {
186 &dev_attr_codec_reg
.attr
,
187 &dev_attr_pmdown_time
.attr
,
191 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
192 struct attribute
*attr
, int idx
)
194 struct device
*dev
= kobj_to_dev(kobj
);
195 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
197 if (attr
== &dev_attr_pmdown_time
.attr
)
198 return attr
->mode
; /* always visible */
199 return rtd
->codec
? attr
->mode
: 0; /* enabled only with codec */
202 static const struct attribute_group soc_dapm_dev_group
= {
203 .attrs
= soc_dapm_dev_attrs
,
204 .is_visible
= soc_dev_attr_is_visible
,
207 static const struct attribute_group soc_dev_roup
= {
208 .attrs
= soc_dev_attrs
,
209 .is_visible
= soc_dev_attr_is_visible
,
212 static const struct attribute_group
*soc_dev_attr_groups
[] = {
218 #ifdef CONFIG_DEBUG_FS
219 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
220 size_t count
, loff_t
*ppos
)
223 struct snd_soc_codec
*codec
= file
->private_data
;
226 if (*ppos
< 0 || !count
)
229 buf
= kmalloc(count
, GFP_KERNEL
);
233 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
235 if (copy_to_user(user_buf
, buf
, ret
)) {
246 static ssize_t
codec_reg_write_file(struct file
*file
,
247 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
252 unsigned long reg
, value
;
253 struct snd_soc_codec
*codec
= file
->private_data
;
256 buf_size
= min(count
, (sizeof(buf
)-1));
257 if (copy_from_user(buf
, user_buf
, buf_size
))
261 while (*start
== ' ')
263 reg
= simple_strtoul(start
, &start
, 16);
264 while (*start
== ' ')
266 ret
= kstrtoul(start
, 16, &value
);
270 /* Userspace has been fiddling around behind the kernel's back */
271 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
273 snd_soc_write(codec
, reg
, value
);
277 static const struct file_operations codec_reg_fops
= {
279 .read
= codec_reg_read_file
,
280 .write
= codec_reg_write_file
,
281 .llseek
= default_llseek
,
284 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
286 if (!component
->card
->debugfs_card_root
)
289 if (component
->debugfs_prefix
) {
292 name
= kasprintf(GFP_KERNEL
, "%s:%s",
293 component
->debugfs_prefix
, component
->name
);
295 component
->debugfs_root
= debugfs_create_dir(name
,
296 component
->card
->debugfs_card_root
);
300 component
->debugfs_root
= debugfs_create_dir(component
->name
,
301 component
->card
->debugfs_card_root
);
304 if (!component
->debugfs_root
) {
305 dev_warn(component
->dev
,
306 "ASoC: Failed to create component debugfs directory\n");
310 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
311 component
->debugfs_root
);
313 if (component
->init_debugfs
)
314 component
->init_debugfs(component
);
317 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
319 debugfs_remove_recursive(component
->debugfs_root
);
322 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
324 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
326 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
327 codec
->component
.debugfs_root
,
328 codec
, &codec_reg_fops
);
329 if (!codec
->debugfs_reg
)
331 "ASoC: Failed to create codec register debugfs file\n");
334 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
335 size_t count
, loff_t
*ppos
)
337 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
338 ssize_t len
, ret
= 0;
339 struct snd_soc_codec
*codec
;
344 mutex_lock(&client_mutex
);
346 list_for_each_entry(codec
, &codec_list
, list
) {
347 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
348 codec
->component
.name
);
351 if (ret
> PAGE_SIZE
) {
357 mutex_unlock(&client_mutex
);
360 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
367 static const struct file_operations codec_list_fops
= {
368 .read
= codec_list_read_file
,
369 .llseek
= default_llseek
,/* read accesses f_pos */
372 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
373 size_t count
, loff_t
*ppos
)
375 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
376 ssize_t len
, ret
= 0;
377 struct snd_soc_component
*component
;
378 struct snd_soc_dai
*dai
;
383 mutex_lock(&client_mutex
);
385 list_for_each_entry(component
, &component_list
, list
) {
386 list_for_each_entry(dai
, &component
->dai_list
, list
) {
387 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
391 if (ret
> PAGE_SIZE
) {
398 mutex_unlock(&client_mutex
);
400 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
407 static const struct file_operations dai_list_fops
= {
408 .read
= dai_list_read_file
,
409 .llseek
= default_llseek
,/* read accesses f_pos */
412 static ssize_t
platform_list_read_file(struct file
*file
,
413 char __user
*user_buf
,
414 size_t count
, loff_t
*ppos
)
416 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
417 ssize_t len
, ret
= 0;
418 struct snd_soc_platform
*platform
;
423 mutex_lock(&client_mutex
);
425 list_for_each_entry(platform
, &platform_list
, list
) {
426 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
427 platform
->component
.name
);
430 if (ret
> PAGE_SIZE
) {
436 mutex_unlock(&client_mutex
);
438 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
445 static const struct file_operations platform_list_fops
= {
446 .read
= platform_list_read_file
,
447 .llseek
= default_llseek
,/* read accesses f_pos */
450 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
452 if (!snd_soc_debugfs_root
)
455 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
456 snd_soc_debugfs_root
);
457 if (!card
->debugfs_card_root
) {
459 "ASoC: Failed to create card debugfs directory\n");
463 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
464 card
->debugfs_card_root
,
466 if (!card
->debugfs_pop_time
)
468 "ASoC: Failed to create pop time debugfs file\n");
471 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
473 debugfs_remove_recursive(card
->debugfs_card_root
);
477 static void snd_soc_debugfs_init(void)
479 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
480 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
481 pr_warn("ASoC: Failed to create debugfs directory\n");
482 snd_soc_debugfs_root
= NULL
;
486 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
488 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
490 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
492 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
494 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
495 &platform_list_fops
))
496 pr_warn("ASoC: Failed to create platform list debugfs file\n");
499 static void snd_soc_debugfs_exit(void)
501 debugfs_remove_recursive(snd_soc_debugfs_root
);
506 #define soc_init_codec_debugfs NULL
508 static inline void soc_init_component_debugfs(
509 struct snd_soc_component
*component
)
513 static inline void soc_cleanup_component_debugfs(
514 struct snd_soc_component
*component
)
518 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
522 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
526 static inline void snd_soc_debugfs_init(void)
530 static inline void snd_soc_debugfs_exit(void)
536 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
537 const char *dai_link
, int stream
)
541 for (i
= 0; i
< card
->num_links
; i
++) {
542 if (card
->rtd
[i
].dai_link
->no_pcm
&&
543 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
544 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
546 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
549 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
551 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
552 const char *dai_link
)
556 for (i
= 0; i
< card
->num_links
; i
++) {
557 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
558 return &card
->rtd
[i
];
560 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
563 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
565 static void codec2codec_close_delayed_work(struct work_struct
*work
)
567 /* Currently nothing to do for c2c links
568 * Since c2c links are internal nodes in the DAPM graph and
569 * don't interface with the outside world or application layer
570 * we don't have to do any special handling on close.
574 #ifdef CONFIG_PM_SLEEP
575 /* powers down audio subsystem for suspend */
576 int snd_soc_suspend(struct device
*dev
)
578 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
579 struct snd_soc_codec
*codec
;
582 /* If the card is not initialized yet there is nothing to do */
583 if (!card
->instantiated
)
586 /* Due to the resume being scheduled into a workqueue we could
587 * suspend before that's finished - wait for it to complete.
589 snd_power_lock(card
->snd_card
);
590 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
591 snd_power_unlock(card
->snd_card
);
593 /* we're going to block userspace touching us until resume completes */
594 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
596 /* mute any active DACs */
597 for (i
= 0; i
< card
->num_rtd
; i
++) {
599 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
602 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
603 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
604 struct snd_soc_dai_driver
*drv
= dai
->driver
;
606 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
607 drv
->ops
->digital_mute(dai
, 1);
611 /* suspend all pcms */
612 for (i
= 0; i
< card
->num_rtd
; i
++) {
613 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
616 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
619 if (card
->suspend_pre
)
620 card
->suspend_pre(card
);
622 for (i
= 0; i
< card
->num_rtd
; i
++) {
623 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
625 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
628 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
629 cpu_dai
->driver
->suspend(cpu_dai
);
632 /* close any waiting streams */
633 for (i
= 0; i
< card
->num_rtd
; i
++)
634 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
636 for (i
= 0; i
< card
->num_rtd
; i
++) {
638 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
641 snd_soc_dapm_stream_event(&card
->rtd
[i
],
642 SNDRV_PCM_STREAM_PLAYBACK
,
643 SND_SOC_DAPM_STREAM_SUSPEND
);
645 snd_soc_dapm_stream_event(&card
->rtd
[i
],
646 SNDRV_PCM_STREAM_CAPTURE
,
647 SND_SOC_DAPM_STREAM_SUSPEND
);
650 /* Recheck all endpoints too, their state is affected by suspend */
651 dapm_mark_endpoints_dirty(card
);
652 snd_soc_dapm_sync(&card
->dapm
);
654 /* suspend all CODECs */
655 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
656 /* If there are paths active then the CODEC will be held with
657 * bias _ON and should not be suspended. */
658 if (!codec
->suspended
) {
659 switch (codec
->dapm
.bias_level
) {
660 case SND_SOC_BIAS_STANDBY
:
662 * If the CODEC is capable of idle
663 * bias off then being in STANDBY
664 * means it's doing something,
665 * otherwise fall through.
667 if (codec
->dapm
.idle_bias_off
) {
669 "ASoC: idle_bias_off CODEC on over suspend\n");
673 case SND_SOC_BIAS_OFF
:
674 if (codec
->driver
->suspend
)
675 codec
->driver
->suspend(codec
);
676 codec
->suspended
= 1;
677 if (codec
->component
.regmap
)
678 regcache_mark_dirty(codec
->component
.regmap
);
679 /* deactivate pins to sleep state */
680 pinctrl_pm_select_sleep_state(codec
->dev
);
684 "ASoC: CODEC is on over suspend\n");
690 for (i
= 0; i
< card
->num_rtd
; i
++) {
691 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
693 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
696 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
697 cpu_dai
->driver
->suspend(cpu_dai
);
699 /* deactivate pins to sleep state */
700 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
703 if (card
->suspend_post
)
704 card
->suspend_post(card
);
708 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
710 /* deferred resume work, so resume can complete before we finished
711 * setting our codec back up, which can be very slow on I2C
713 static void soc_resume_deferred(struct work_struct
*work
)
715 struct snd_soc_card
*card
=
716 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
717 struct snd_soc_codec
*codec
;
720 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
721 * so userspace apps are blocked from touching us
724 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
726 /* Bring us up into D2 so that DAPM starts enabling things */
727 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
729 if (card
->resume_pre
)
730 card
->resume_pre(card
);
732 /* resume control bus DAIs */
733 for (i
= 0; i
< card
->num_rtd
; i
++) {
734 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
736 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
739 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
740 cpu_dai
->driver
->resume(cpu_dai
);
743 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
744 /* If the CODEC was idle over suspend then it will have been
745 * left with bias OFF or STANDBY and suspended so we must now
746 * resume. Otherwise the suspend was suppressed.
748 if (codec
->suspended
) {
749 switch (codec
->dapm
.bias_level
) {
750 case SND_SOC_BIAS_STANDBY
:
751 case SND_SOC_BIAS_OFF
:
752 if (codec
->driver
->resume
)
753 codec
->driver
->resume(codec
);
754 codec
->suspended
= 0;
758 "ASoC: CODEC was on over suspend\n");
764 for (i
= 0; i
< card
->num_rtd
; i
++) {
766 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
769 snd_soc_dapm_stream_event(&card
->rtd
[i
],
770 SNDRV_PCM_STREAM_PLAYBACK
,
771 SND_SOC_DAPM_STREAM_RESUME
);
773 snd_soc_dapm_stream_event(&card
->rtd
[i
],
774 SNDRV_PCM_STREAM_CAPTURE
,
775 SND_SOC_DAPM_STREAM_RESUME
);
778 /* unmute any active DACs */
779 for (i
= 0; i
< card
->num_rtd
; i
++) {
781 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
784 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
785 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
786 struct snd_soc_dai_driver
*drv
= dai
->driver
;
788 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
789 drv
->ops
->digital_mute(dai
, 0);
793 for (i
= 0; i
< card
->num_rtd
; i
++) {
794 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
796 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
799 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
800 cpu_dai
->driver
->resume(cpu_dai
);
803 if (card
->resume_post
)
804 card
->resume_post(card
);
806 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
808 /* userspace can access us now we are back as we were before */
809 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
811 /* Recheck all endpoints too, their state is affected by suspend */
812 dapm_mark_endpoints_dirty(card
);
813 snd_soc_dapm_sync(&card
->dapm
);
816 /* powers up audio subsystem after a suspend */
817 int snd_soc_resume(struct device
*dev
)
819 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
820 bool bus_control
= false;
823 /* If the card is not initialized yet there is nothing to do */
824 if (!card
->instantiated
)
827 /* activate pins from sleep state */
828 for (i
= 0; i
< card
->num_rtd
; i
++) {
829 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
830 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
831 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
835 pinctrl_pm_select_default_state(cpu_dai
->dev
);
837 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
838 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
839 if (codec_dai
->active
)
840 pinctrl_pm_select_default_state(codec_dai
->dev
);
845 * DAIs that also act as the control bus master might have other drivers
846 * hanging off them so need to resume immediately. Other drivers don't
847 * have that problem and may take a substantial amount of time to resume
848 * due to I/O costs and anti-pop so handle them out of line.
850 for (i
= 0; i
< card
->num_rtd
; i
++) {
851 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
852 bus_control
|= cpu_dai
->driver
->bus_control
;
855 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
856 soc_resume_deferred(&card
->deferred_resume_work
);
858 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
859 if (!schedule_work(&card
->deferred_resume_work
))
860 dev_err(dev
, "ASoC: resume work item may be lost\n");
865 EXPORT_SYMBOL_GPL(snd_soc_resume
);
867 #define snd_soc_suspend NULL
868 #define snd_soc_resume NULL
871 static const struct snd_soc_dai_ops null_dai_ops
= {
874 static struct snd_soc_component
*soc_find_component(
875 const struct device_node
*of_node
, const char *name
)
877 struct snd_soc_component
*component
;
879 lockdep_assert_held(&client_mutex
);
881 list_for_each_entry(component
, &component_list
, list
) {
883 if (component
->dev
->of_node
== of_node
)
885 } else if (strcmp(component
->name
, name
) == 0) {
893 static struct snd_soc_dai
*snd_soc_find_dai(
894 const struct snd_soc_dai_link_component
*dlc
)
896 struct snd_soc_component
*component
;
897 struct snd_soc_dai
*dai
;
898 struct device_node
*component_of_node
;
900 lockdep_assert_held(&client_mutex
);
902 /* Find CPU DAI from registered DAIs*/
903 list_for_each_entry(component
, &component_list
, list
) {
904 component_of_node
= component
->dev
->of_node
;
905 if (!component_of_node
&& component
->dev
->parent
)
906 component_of_node
= component
->dev
->parent
->of_node
;
908 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
910 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
912 list_for_each_entry(dai
, &component
->dai_list
, list
) {
913 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
))
923 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
925 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
926 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
927 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
928 struct snd_soc_dai_link_component cpu_dai_component
;
929 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
930 struct snd_soc_platform
*platform
;
931 const char *platform_name
;
934 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
936 cpu_dai_component
.name
= dai_link
->cpu_name
;
937 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
938 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
939 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
941 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
942 dai_link
->cpu_dai_name
);
943 return -EPROBE_DEFER
;
946 rtd
->num_codecs
= dai_link
->num_codecs
;
948 /* Find CODEC from registered CODECs */
949 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
950 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
951 if (!codec_dais
[i
]) {
952 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
954 return -EPROBE_DEFER
;
958 /* Single codec links expect codec and codec_dai in runtime data */
959 rtd
->codec_dai
= codec_dais
[0];
960 rtd
->codec
= rtd
->codec_dai
->codec
;
962 /* if there's no platform we match on the empty platform */
963 platform_name
= dai_link
->platform_name
;
964 if (!platform_name
&& !dai_link
->platform_of_node
)
965 platform_name
= "snd-soc-dummy";
967 /* find one from the set of registered platforms */
968 list_for_each_entry(platform
, &platform_list
, list
) {
969 if (dai_link
->platform_of_node
) {
970 if (platform
->dev
->of_node
!=
971 dai_link
->platform_of_node
)
974 if (strcmp(platform
->component
.name
, platform_name
))
978 rtd
->platform
= platform
;
980 if (!rtd
->platform
) {
981 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
982 dai_link
->platform_name
);
983 return -EPROBE_DEFER
;
991 static void soc_remove_component(struct snd_soc_component
*component
)
993 if (!component
->probed
)
996 /* This is a HACK and will be removed soon */
997 if (component
->codec
)
998 list_del(&component
->codec
->card_list
);
1000 if (component
->remove
)
1001 component
->remove(component
);
1003 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1005 soc_cleanup_component_debugfs(component
);
1006 component
->probed
= 0;
1007 module_put(component
->dev
->driver
->owner
);
1010 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1014 if (dai
&& dai
->probed
&&
1015 dai
->driver
->remove_order
== order
) {
1016 if (dai
->driver
->remove
) {
1017 err
= dai
->driver
->remove(dai
);
1020 "ASoC: failed to remove %s: %d\n",
1027 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1029 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1032 /* unregister the rtd device */
1033 if (rtd
->dev_registered
) {
1034 device_unregister(rtd
->dev
);
1035 rtd
->dev_registered
= 0;
1038 /* remove the CODEC DAI */
1039 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1040 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1042 soc_remove_dai(rtd
->cpu_dai
, order
);
1045 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1048 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1049 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1050 struct snd_soc_platform
*platform
= rtd
->platform
;
1051 struct snd_soc_component
*component
;
1054 /* remove the platform */
1055 if (platform
&& platform
->component
.driver
->remove_order
== order
)
1056 soc_remove_component(&platform
->component
);
1058 /* remove the CODEC-side CODEC */
1059 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1060 component
= rtd
->codec_dais
[i
]->component
;
1061 if (component
->driver
->remove_order
== order
)
1062 soc_remove_component(component
);
1065 /* remove any CPU-side CODEC */
1067 if (cpu_dai
->component
->driver
->remove_order
== order
)
1068 soc_remove_component(cpu_dai
->component
);
1072 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1076 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1078 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1079 soc_remove_link_dais(card
, dai
, order
);
1082 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1084 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1085 soc_remove_link_components(card
, dai
, order
);
1091 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1092 struct snd_soc_component
*component
)
1096 if (card
->codec_conf
== NULL
)
1099 for (i
= 0; i
< card
->num_configs
; i
++) {
1100 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1101 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1103 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1105 component
->name_prefix
= map
->name_prefix
;
1110 static int soc_probe_component(struct snd_soc_card
*card
,
1111 struct snd_soc_component
*component
)
1113 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1114 struct snd_soc_dai
*dai
;
1117 if (component
->probed
)
1120 component
->card
= card
;
1122 soc_set_name_prefix(card
, component
);
1124 if (!try_module_get(component
->dev
->driver
->owner
))
1127 soc_init_component_debugfs(component
);
1129 if (component
->dapm_widgets
) {
1130 ret
= snd_soc_dapm_new_controls(dapm
, component
->dapm_widgets
,
1131 component
->num_dapm_widgets
);
1134 dev_err(component
->dev
,
1135 "Failed to create new controls %d\n", ret
);
1140 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1141 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1143 dev_err(component
->dev
,
1144 "Failed to create DAI widgets %d\n", ret
);
1149 if (component
->probe
) {
1150 ret
= component
->probe(component
);
1152 dev_err(component
->dev
,
1153 "ASoC: failed to probe component %d\n", ret
);
1157 WARN(dapm
->idle_bias_off
&&
1158 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1159 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1163 if (component
->controls
)
1164 snd_soc_add_component_controls(component
, component
->controls
,
1165 component
->num_controls
);
1166 if (component
->dapm_routes
)
1167 snd_soc_dapm_add_routes(dapm
, component
->dapm_routes
,
1168 component
->num_dapm_routes
);
1170 component
->probed
= 1;
1171 list_add(&dapm
->list
, &card
->dapm_list
);
1173 /* This is a HACK and will be removed soon */
1174 if (component
->codec
)
1175 list_add(&component
->codec
->card_list
, &card
->codec_dev_list
);
1180 soc_cleanup_component_debugfs(component
);
1181 module_put(component
->dev
->driver
->owner
);
1186 static void rtd_release(struct device
*dev
)
1191 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1196 /* register the rtd device */
1197 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1200 device_initialize(rtd
->dev
);
1201 rtd
->dev
->parent
= rtd
->card
->dev
;
1202 rtd
->dev
->release
= rtd_release
;
1203 rtd
->dev
->groups
= soc_dev_attr_groups
;
1204 dev_set_name(rtd
->dev
, "%s", name
);
1205 dev_set_drvdata(rtd
->dev
, rtd
);
1206 mutex_init(&rtd
->pcm_mutex
);
1207 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1208 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1209 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1210 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1211 ret
= device_add(rtd
->dev
);
1213 /* calling put_device() here to free the rtd->dev */
1214 put_device(rtd
->dev
);
1215 dev_err(rtd
->card
->dev
,
1216 "ASoC: failed to register runtime device: %d\n", ret
);
1219 rtd
->dev_registered
= 1;
1223 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1226 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1227 struct snd_soc_platform
*platform
= rtd
->platform
;
1228 struct snd_soc_component
*component
;
1231 /* probe the CPU-side component, if it is a CODEC */
1232 component
= rtd
->cpu_dai
->component
;
1233 if (component
->driver
->probe_order
== order
) {
1234 ret
= soc_probe_component(card
, component
);
1239 /* probe the CODEC-side components */
1240 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1241 component
= rtd
->codec_dais
[i
]->component
;
1242 if (component
->driver
->probe_order
== order
) {
1243 ret
= soc_probe_component(card
, component
);
1249 /* probe the platform */
1250 if (platform
->component
.driver
->probe_order
== order
) {
1251 ret
= soc_probe_component(card
, &platform
->component
);
1259 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1263 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1264 if (dai
->driver
->probe
) {
1265 ret
= dai
->driver
->probe(dai
);
1268 "ASoC: failed to probe DAI %s: %d\n",
1280 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1281 struct snd_soc_dai_link
*dai_link
,
1282 struct snd_soc_pcm_runtime
*rtd
)
1284 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1285 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1286 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1289 if (rtd
->num_codecs
> 1)
1290 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1292 /* link the DAI widgets */
1293 play_w
= codec_dai
->playback_widget
;
1294 capture_w
= cpu_dai
->capture_widget
;
1295 if (play_w
&& capture_w
) {
1296 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1297 dai_link
->num_params
, capture_w
,
1300 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1301 play_w
->name
, capture_w
->name
, ret
);
1306 play_w
= cpu_dai
->playback_widget
;
1307 capture_w
= codec_dai
->capture_widget
;
1308 if (play_w
&& capture_w
) {
1309 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1310 dai_link
->num_params
, capture_w
,
1313 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1314 play_w
->name
, capture_w
->name
, ret
);
1322 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1324 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1325 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1326 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1329 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1330 card
->name
, num
, order
);
1332 /* set default power off timeout */
1333 rtd
->pmdown_time
= pmdown_time
;
1335 ret
= soc_probe_dai(cpu_dai
, order
);
1339 /* probe the CODEC DAI */
1340 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1341 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1346 /* complete DAI probe during last probe */
1347 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1350 /* do machine specific initialization */
1351 if (dai_link
->init
) {
1352 ret
= dai_link
->init(rtd
);
1354 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1355 dai_link
->name
, ret
);
1360 if (dai_link
->dai_fmt
)
1361 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1363 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1367 #ifdef CONFIG_DEBUG_FS
1368 /* add DPCM sysfs entries */
1369 if (dai_link
->dynamic
)
1370 soc_dpcm_debugfs_add(rtd
);
1373 if (cpu_dai
->driver
->compress_dai
) {
1374 /*create compress_device"*/
1375 ret
= soc_new_compress(rtd
, num
);
1377 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1378 dai_link
->stream_name
);
1383 if (!dai_link
->params
) {
1384 /* create the pcm */
1385 ret
= soc_new_pcm(rtd
, num
);
1387 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1388 dai_link
->stream_name
, ret
);
1392 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1393 codec2codec_close_delayed_work
);
1395 /* link the DAI widgets */
1396 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1405 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1407 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1408 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1409 const char *name
= aux_dev
->codec_name
;
1411 rtd
->component
= soc_find_component(aux_dev
->codec_of_node
, name
);
1412 if (!rtd
->component
) {
1413 if (aux_dev
->codec_of_node
)
1414 name
= of_node_full_name(aux_dev
->codec_of_node
);
1416 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1417 return -EPROBE_DEFER
;
1421 * Some places still reference rtd->codec, so we have to keep that
1422 * initialized if the component is a CODEC. Once all those references
1423 * have been removed, this code can be removed as well.
1425 rtd
->codec
= rtd
->component
->codec
;
1430 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1432 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1433 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1436 ret
= soc_probe_component(card
, rtd
->component
);
1440 /* do machine specific initialization */
1441 if (aux_dev
->init
) {
1442 ret
= aux_dev
->init(rtd
->component
);
1444 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1445 aux_dev
->name
, ret
);
1450 return soc_post_component_init(rtd
, aux_dev
->name
);
1453 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1455 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1456 struct snd_soc_component
*component
= rtd
->component
;
1458 /* unregister the rtd device */
1459 if (rtd
->dev_registered
) {
1460 device_unregister(rtd
->dev
);
1461 rtd
->dev_registered
= 0;
1464 if (component
&& component
->probed
)
1465 soc_remove_component(component
);
1468 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1472 if (codec
->cache_init
)
1475 ret
= snd_soc_cache_init(codec
);
1478 "ASoC: Failed to set cache compression type: %d\n",
1482 codec
->cache_init
= 1;
1487 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1488 * @rtd: The runtime for which the DAI link format should be changed
1489 * @dai_fmt: The new DAI link format
1491 * This function updates the DAI link format for all DAIs connected to the DAI
1492 * link for the specified runtime.
1494 * Note: For setups with a static format set the dai_fmt field in the
1495 * corresponding snd_dai_link struct instead of using this function.
1497 * Returns 0 on success, otherwise a negative error code.
1499 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1500 unsigned int dai_fmt
)
1502 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1503 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1507 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1508 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1510 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1511 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1512 dev_warn(codec_dai
->dev
,
1513 "ASoC: Failed to set DAI format: %d\n", ret
);
1518 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1519 if (cpu_dai
->codec
) {
1520 unsigned int inv_dai_fmt
;
1522 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1523 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1524 case SND_SOC_DAIFMT_CBM_CFM
:
1525 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1527 case SND_SOC_DAIFMT_CBM_CFS
:
1528 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1530 case SND_SOC_DAIFMT_CBS_CFM
:
1531 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1533 case SND_SOC_DAIFMT_CBS_CFS
:
1534 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1538 dai_fmt
= inv_dai_fmt
;
1541 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1542 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1543 dev_warn(cpu_dai
->dev
,
1544 "ASoC: Failed to set DAI format: %d\n", ret
);
1550 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1552 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1554 struct snd_soc_codec
*codec
;
1557 mutex_lock(&client_mutex
);
1558 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1561 for (i
= 0; i
< card
->num_links
; i
++) {
1562 ret
= soc_bind_dai_link(card
, i
);
1567 /* bind aux_devs too */
1568 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1569 ret
= soc_bind_aux_dev(card
, i
);
1574 /* initialize the register cache for each available codec */
1575 list_for_each_entry(codec
, &codec_list
, list
) {
1576 if (codec
->cache_init
)
1578 ret
= snd_soc_init_codec_cache(codec
);
1583 /* card bind complete so register a sound card */
1584 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1585 card
->owner
, 0, &card
->snd_card
);
1588 "ASoC: can't create sound card for card %s: %d\n",
1593 soc_init_card_debugfs(card
);
1595 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1596 card
->dapm
.dev
= card
->dev
;
1597 card
->dapm
.card
= card
;
1598 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1600 #ifdef CONFIG_DEBUG_FS
1601 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1604 #ifdef CONFIG_PM_SLEEP
1605 /* deferred resume work */
1606 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1609 if (card
->dapm_widgets
)
1610 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1611 card
->num_dapm_widgets
);
1613 if (card
->of_dapm_widgets
)
1614 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
1615 card
->num_of_dapm_widgets
);
1617 /* initialise the sound card only once */
1619 ret
= card
->probe(card
);
1621 goto card_probe_error
;
1624 /* probe all components used by DAI links on this card */
1625 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1627 for (i
= 0; i
< card
->num_links
; i
++) {
1628 ret
= soc_probe_link_components(card
, i
, order
);
1631 "ASoC: failed to instantiate card %d\n",
1638 /* probe all DAI links on this card */
1639 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1641 for (i
= 0; i
< card
->num_links
; i
++) {
1642 ret
= soc_probe_link_dais(card
, i
, order
);
1645 "ASoC: failed to instantiate card %d\n",
1652 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1653 ret
= soc_probe_aux_dev(card
, i
);
1656 "ASoC: failed to add auxiliary devices %d\n",
1658 goto probe_aux_dev_err
;
1662 snd_soc_dapm_link_dai_widgets(card
);
1663 snd_soc_dapm_connect_dai_link_widgets(card
);
1666 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1668 if (card
->dapm_routes
)
1669 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1670 card
->num_dapm_routes
);
1672 if (card
->of_dapm_routes
)
1673 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
1674 card
->num_of_dapm_routes
);
1676 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1678 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1679 "%s", card
->long_name
? card
->long_name
: card
->name
);
1680 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1681 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1682 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1683 switch (card
->snd_card
->driver
[i
]) {
1689 if (!isalnum(card
->snd_card
->driver
[i
]))
1690 card
->snd_card
->driver
[i
] = '_';
1695 if (card
->late_probe
) {
1696 ret
= card
->late_probe(card
);
1698 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1700 goto probe_aux_dev_err
;
1704 snd_soc_dapm_new_widgets(card
);
1706 ret
= snd_card_register(card
->snd_card
);
1708 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1710 goto probe_aux_dev_err
;
1713 card
->instantiated
= 1;
1714 snd_soc_dapm_sync(&card
->dapm
);
1715 mutex_unlock(&card
->mutex
);
1716 mutex_unlock(&client_mutex
);
1721 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1722 soc_remove_aux_dev(card
, i
);
1725 soc_remove_dai_links(card
);
1731 soc_cleanup_card_debugfs(card
);
1732 snd_card_free(card
->snd_card
);
1735 mutex_unlock(&card
->mutex
);
1736 mutex_unlock(&client_mutex
);
1741 /* probes a new socdev */
1742 static int soc_probe(struct platform_device
*pdev
)
1744 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1747 * no card, so machine driver should be registering card
1748 * we should not be here in that case so ret error
1753 dev_warn(&pdev
->dev
,
1754 "ASoC: machine %s should use snd_soc_register_card()\n",
1757 /* Bodge while we unpick instantiation */
1758 card
->dev
= &pdev
->dev
;
1760 return snd_soc_register_card(card
);
1763 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1767 /* make sure any delayed work runs */
1768 for (i
= 0; i
< card
->num_rtd
; i
++) {
1769 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1770 flush_delayed_work(&rtd
->delayed_work
);
1773 /* remove auxiliary devices */
1774 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1775 soc_remove_aux_dev(card
, i
);
1777 /* remove and free each DAI */
1778 soc_remove_dai_links(card
);
1780 soc_cleanup_card_debugfs(card
);
1782 /* remove the card */
1786 snd_soc_dapm_free(&card
->dapm
);
1788 snd_card_free(card
->snd_card
);
1793 /* removes a socdev */
1794 static int soc_remove(struct platform_device
*pdev
)
1796 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1798 snd_soc_unregister_card(card
);
1802 int snd_soc_poweroff(struct device
*dev
)
1804 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1807 if (!card
->instantiated
)
1810 /* Flush out pmdown_time work - we actually do want to run it
1811 * now, we're shutting down so no imminent restart. */
1812 for (i
= 0; i
< card
->num_rtd
; i
++) {
1813 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1814 flush_delayed_work(&rtd
->delayed_work
);
1817 snd_soc_dapm_shutdown(card
);
1819 /* deactivate pins to sleep state */
1820 for (i
= 0; i
< card
->num_rtd
; i
++) {
1821 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1822 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1825 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
1826 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
1827 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
1828 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
1834 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1836 const struct dev_pm_ops snd_soc_pm_ops
= {
1837 .suspend
= snd_soc_suspend
,
1838 .resume
= snd_soc_resume
,
1839 .freeze
= snd_soc_suspend
,
1840 .thaw
= snd_soc_resume
,
1841 .poweroff
= snd_soc_poweroff
,
1842 .restore
= snd_soc_resume
,
1844 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1846 /* ASoC platform driver */
1847 static struct platform_driver soc_driver
= {
1849 .name
= "soc-audio",
1850 .pm
= &snd_soc_pm_ops
,
1853 .remove
= soc_remove
,
1857 * snd_soc_cnew - create new control
1858 * @_template: control template
1859 * @data: control private data
1860 * @long_name: control long name
1861 * @prefix: control name prefix
1863 * Create a new mixer control from a template control.
1865 * Returns 0 for success, else error.
1867 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1868 void *data
, const char *long_name
,
1871 struct snd_kcontrol_new
template;
1872 struct snd_kcontrol
*kcontrol
;
1875 memcpy(&template, _template
, sizeof(template));
1879 long_name
= template.name
;
1882 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
1886 template.name
= name
;
1888 template.name
= long_name
;
1891 kcontrol
= snd_ctl_new1(&template, data
);
1897 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1899 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
1900 const struct snd_kcontrol_new
*controls
, int num_controls
,
1901 const char *prefix
, void *data
)
1905 for (i
= 0; i
< num_controls
; i
++) {
1906 const struct snd_kcontrol_new
*control
= &controls
[i
];
1907 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
1908 control
->name
, prefix
));
1910 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
1911 control
->name
, err
);
1919 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
1922 struct snd_card
*card
= soc_card
->snd_card
;
1923 struct snd_kcontrol
*kctl
;
1925 if (unlikely(!name
))
1928 list_for_each_entry(kctl
, &card
->controls
, list
)
1929 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
1933 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
1936 * snd_soc_add_component_controls - Add an array of controls to a component.
1938 * @component: Component to add controls to
1939 * @controls: Array of controls to add
1940 * @num_controls: Number of elements in the array
1942 * Return: 0 for success, else error.
1944 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
1945 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1947 struct snd_card
*card
= component
->card
->snd_card
;
1949 return snd_soc_add_controls(card
, component
->dev
, controls
,
1950 num_controls
, component
->name_prefix
, component
);
1952 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
1955 * snd_soc_add_codec_controls - add an array of controls to a codec.
1956 * Convenience function to add a list of controls. Many codecs were
1957 * duplicating this code.
1959 * @codec: codec to add controls to
1960 * @controls: array of controls to add
1961 * @num_controls: number of elements in the array
1963 * Return 0 for success, else error.
1965 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
1966 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1968 return snd_soc_add_component_controls(&codec
->component
, controls
,
1971 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
1974 * snd_soc_add_platform_controls - add an array of controls to a platform.
1975 * Convenience function to add a list of controls.
1977 * @platform: platform to add controls to
1978 * @controls: array of controls to add
1979 * @num_controls: number of elements in the array
1981 * Return 0 for success, else error.
1983 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
1984 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1986 return snd_soc_add_component_controls(&platform
->component
, controls
,
1989 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
1992 * snd_soc_add_card_controls - add an array of controls to a SoC card.
1993 * Convenience function to add a list of controls.
1995 * @soc_card: SoC card to add controls to
1996 * @controls: array of controls to add
1997 * @num_controls: number of elements in the array
1999 * Return 0 for success, else error.
2001 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2002 const struct snd_kcontrol_new
*controls
, int num_controls
)
2004 struct snd_card
*card
= soc_card
->snd_card
;
2006 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2009 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2012 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2013 * Convienience function to add a list of controls.
2015 * @dai: DAI to add controls to
2016 * @controls: array of controls to add
2017 * @num_controls: number of elements in the array
2019 * Return 0 for success, else error.
2021 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2022 const struct snd_kcontrol_new
*controls
, int num_controls
)
2024 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2026 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2029 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2032 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2034 * @clk_id: DAI specific clock ID
2035 * @freq: new clock frequency in Hz
2036 * @dir: new clock direction - input/output.
2038 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2040 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2041 unsigned int freq
, int dir
)
2043 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2044 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2045 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2046 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2051 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2054 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2056 * @clk_id: DAI specific clock ID
2057 * @source: Source for the clock
2058 * @freq: new clock frequency in Hz
2059 * @dir: new clock direction - input/output.
2061 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2063 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2064 int source
, unsigned int freq
, int dir
)
2066 if (codec
->driver
->set_sysclk
)
2067 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2072 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2075 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2077 * @div_id: DAI specific clock divider ID
2078 * @div: new clock divisor.
2080 * Configures the clock dividers. This is used to derive the best DAI bit and
2081 * frame clocks from the system or master clock. It's best to set the DAI bit
2082 * and frame clocks as low as possible to save system power.
2084 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2085 int div_id
, int div
)
2087 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2088 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2092 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2095 * snd_soc_dai_set_pll - configure DAI PLL.
2097 * @pll_id: DAI specific PLL ID
2098 * @source: DAI specific source for the PLL
2099 * @freq_in: PLL input clock frequency in Hz
2100 * @freq_out: requested PLL output clock frequency in Hz
2102 * Configures and enables PLL to generate output clock based on input clock.
2104 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2105 unsigned int freq_in
, unsigned int freq_out
)
2107 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2108 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2110 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2111 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2116 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2119 * snd_soc_codec_set_pll - configure codec PLL.
2121 * @pll_id: DAI specific PLL ID
2122 * @source: DAI specific source for the PLL
2123 * @freq_in: PLL input clock frequency in Hz
2124 * @freq_out: requested PLL output clock frequency in Hz
2126 * Configures and enables PLL to generate output clock based on input clock.
2128 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2129 unsigned int freq_in
, unsigned int freq_out
)
2131 if (codec
->driver
->set_pll
)
2132 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2137 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2140 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2142 * @ratio Ratio of BCLK to Sample rate.
2144 * Configures the DAI for a preset BCLK to sample rate ratio.
2146 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2148 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2149 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2153 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2156 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2158 * @fmt: SND_SOC_DAIFMT_ format value.
2160 * Configures the DAI hardware format and clocking.
2162 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2164 if (dai
->driver
== NULL
)
2166 if (dai
->driver
->ops
->set_fmt
== NULL
)
2168 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2170 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2173 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2174 * @slots: Number of slots in use.
2175 * @tx_mask: bitmask representing active TX slots.
2176 * @rx_mask: bitmask representing active RX slots.
2178 * Generates the TDM tx and rx slot default masks for DAI.
2180 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2181 unsigned int *tx_mask
,
2182 unsigned int *rx_mask
)
2184 if (*tx_mask
|| *rx_mask
)
2190 *tx_mask
= (1 << slots
) - 1;
2191 *rx_mask
= (1 << slots
) - 1;
2197 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2198 * @dai: The DAI to configure
2199 * @tx_mask: bitmask representing active TX slots.
2200 * @rx_mask: bitmask representing active RX slots.
2201 * @slots: Number of slots in use.
2202 * @slot_width: Width in bits for each slot.
2204 * This function configures the specified DAI for TDM operation. @slot contains
2205 * the total number of slots of the TDM stream and @slot_with the width of each
2206 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2207 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2208 * DAI should write to or read from. If a bit is set the corresponding slot is
2209 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2210 * the first slot, bit 1 to the second slot and so on. The first active slot
2211 * maps to the first channel of the DAI, the second active slot to the second
2212 * channel and so on.
2214 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2215 * @rx_mask and @slot_width will be ignored.
2217 * Returns 0 on success, a negative error code otherwise.
2219 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2220 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2222 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2223 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2224 &tx_mask
, &rx_mask
);
2226 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2228 dai
->tx_mask
= tx_mask
;
2229 dai
->rx_mask
= rx_mask
;
2231 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2232 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2237 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2240 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2242 * @tx_num: how many TX channels
2243 * @tx_slot: pointer to an array which imply the TX slot number channel
2245 * @rx_num: how many RX channels
2246 * @rx_slot: pointer to an array which imply the RX slot number channel
2249 * configure the relationship between channel number and TDM slot number.
2251 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2252 unsigned int tx_num
, unsigned int *tx_slot
,
2253 unsigned int rx_num
, unsigned int *rx_slot
)
2255 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2256 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2261 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2264 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2266 * @tristate: tristate enable
2268 * Tristates the DAI so that others can use it.
2270 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2272 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2273 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2277 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2280 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2282 * @mute: mute enable
2283 * @direction: stream to mute
2285 * Mutes the DAI DAC.
2287 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2293 if (dai
->driver
->ops
->mute_stream
)
2294 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2295 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2296 dai
->driver
->ops
->digital_mute
)
2297 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2301 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2303 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
2304 struct snd_soc_dai_link
*dai_link
)
2306 /* Legacy codec/codec_dai link is a single entry in multicodec */
2307 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
2308 dai_link
->codec_dai_name
) {
2309 dai_link
->num_codecs
= 1;
2311 dai_link
->codecs
= devm_kzalloc(card
->dev
,
2312 sizeof(struct snd_soc_dai_link_component
),
2314 if (!dai_link
->codecs
)
2317 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
2318 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
2319 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
2322 if (!dai_link
->codecs
) {
2323 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
2331 * snd_soc_register_card - Register a card with the ASoC core
2333 * @card: Card to register
2336 int snd_soc_register_card(struct snd_soc_card
*card
)
2340 if (!card
->name
|| !card
->dev
)
2343 for (i
= 0; i
< card
->num_links
; i
++) {
2344 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2346 ret
= snd_soc_init_multicodec(card
, link
);
2348 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
2352 for (j
= 0; j
< link
->num_codecs
; j
++) {
2354 * Codec must be specified by 1 of name or OF node,
2355 * not both or neither.
2357 if (!!link
->codecs
[j
].name
==
2358 !!link
->codecs
[j
].of_node
) {
2359 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
2363 /* Codec DAI name must be specified */
2364 if (!link
->codecs
[j
].dai_name
) {
2365 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
2372 * Platform may be specified by either name or OF node, but
2373 * can be left unspecified, and a dummy platform will be used.
2375 if (link
->platform_name
&& link
->platform_of_node
) {
2377 "ASoC: Both platform name/of_node are set for %s\n",
2383 * CPU device may be specified by either name or OF node, but
2384 * can be left unspecified, and will be matched based on DAI
2387 if (link
->cpu_name
&& link
->cpu_of_node
) {
2389 "ASoC: Neither/both cpu name/of_node are set for %s\n",
2394 * At least one of CPU DAI name or CPU device name/node must be
2397 if (!link
->cpu_dai_name
&&
2398 !(link
->cpu_name
|| link
->cpu_of_node
)) {
2400 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
2406 dev_set_drvdata(card
->dev
, card
);
2408 snd_soc_initialize_card_lists(card
);
2410 card
->rtd
= devm_kzalloc(card
->dev
,
2411 sizeof(struct snd_soc_pcm_runtime
) *
2412 (card
->num_links
+ card
->num_aux_devs
),
2414 if (card
->rtd
== NULL
)
2417 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2419 for (i
= 0; i
< card
->num_links
; i
++) {
2420 card
->rtd
[i
].card
= card
;
2421 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2422 card
->rtd
[i
].codec_dais
= devm_kzalloc(card
->dev
,
2423 sizeof(struct snd_soc_dai
*) *
2424 (card
->rtd
[i
].dai_link
->num_codecs
),
2426 if (card
->rtd
[i
].codec_dais
== NULL
)
2430 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2431 card
->rtd_aux
[i
].card
= card
;
2433 INIT_LIST_HEAD(&card
->dapm_dirty
);
2434 card
->instantiated
= 0;
2435 mutex_init(&card
->mutex
);
2436 mutex_init(&card
->dapm_mutex
);
2438 ret
= snd_soc_instantiate_card(card
);
2442 /* deactivate pins to sleep state */
2443 for (i
= 0; i
< card
->num_rtd
; i
++) {
2444 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2445 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2448 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2449 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2450 if (!codec_dai
->active
)
2451 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2454 if (!cpu_dai
->active
)
2455 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2460 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2463 * snd_soc_unregister_card - Unregister a card with the ASoC core
2465 * @card: Card to unregister
2468 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2470 if (card
->instantiated
) {
2471 card
->instantiated
= false;
2472 snd_soc_dapm_shutdown(card
);
2473 soc_cleanup_card_resources(card
);
2474 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2479 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2482 * Simplify DAI link configuration by removing ".-1" from device names
2483 * and sanitizing names.
2485 static char *fmt_single_name(struct device
*dev
, int *id
)
2487 char *found
, name
[NAME_SIZE
];
2490 if (dev_name(dev
) == NULL
)
2493 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2495 /* are we a "%s.%d" name (platform and SPI components) */
2496 found
= strstr(name
, dev
->driver
->name
);
2499 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2501 /* discard ID from name if ID == -1 */
2503 found
[strlen(dev
->driver
->name
)] = '\0';
2507 /* I2C component devices are named "bus-addr" */
2508 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2509 char tmp
[NAME_SIZE
];
2511 /* create unique ID number from I2C addr and bus */
2512 *id
= ((id1
& 0xffff) << 16) + id2
;
2514 /* sanitize component name for DAI link creation */
2515 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2516 strlcpy(name
, tmp
, NAME_SIZE
);
2521 return kstrdup(name
, GFP_KERNEL
);
2525 * Simplify DAI link naming for single devices with multiple DAIs by removing
2526 * any ".-1" and using the DAI name (instead of device name).
2528 static inline char *fmt_multiple_name(struct device
*dev
,
2529 struct snd_soc_dai_driver
*dai_drv
)
2531 if (dai_drv
->name
== NULL
) {
2533 "ASoC: error - multiple DAI %s registered with no name\n",
2538 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2542 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2544 * @component: The component for which the DAIs should be unregistered
2546 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
2548 struct snd_soc_dai
*dai
, *_dai
;
2550 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
2551 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
2553 list_del(&dai
->list
);
2560 * snd_soc_register_dais - Register a DAI with the ASoC core
2562 * @component: The component the DAIs are registered for
2563 * @dai_drv: DAI driver to use for the DAIs
2564 * @count: Number of DAIs
2565 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2568 static int snd_soc_register_dais(struct snd_soc_component
*component
,
2569 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
2570 bool legacy_dai_naming
)
2572 struct device
*dev
= component
->dev
;
2573 struct snd_soc_dai
*dai
;
2577 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
2579 component
->dai_drv
= dai_drv
;
2580 component
->num_dai
= count
;
2582 for (i
= 0; i
< count
; i
++) {
2584 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2591 * Back in the old days when we still had component-less DAIs,
2592 * instead of having a static name, component-less DAIs would
2593 * inherit the name of the parent device so it is possible to
2594 * register multiple instances of the DAI. We still need to keep
2595 * the same naming style even though those DAIs are not
2596 * component-less anymore.
2598 if (count
== 1 && legacy_dai_naming
&&
2599 (dai_drv
[i
].id
== 0 || dai_drv
[i
].name
== NULL
)) {
2600 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2602 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
2604 dai
->id
= dai_drv
[i
].id
;
2608 if (dai
->name
== NULL
) {
2614 dai
->component
= component
;
2616 dai
->driver
= &dai_drv
[i
];
2617 if (!dai
->driver
->ops
)
2618 dai
->driver
->ops
= &null_dai_ops
;
2620 list_add(&dai
->list
, &component
->dai_list
);
2622 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
2628 snd_soc_unregister_dais(component
);
2633 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
2634 enum snd_soc_dapm_type type
, int subseq
)
2636 struct snd_soc_component
*component
= dapm
->component
;
2638 component
->driver
->seq_notifier(component
, type
, subseq
);
2641 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
2644 struct snd_soc_component
*component
= dapm
->component
;
2646 return component
->driver
->stream_event(component
, event
);
2649 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
2650 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
2652 struct snd_soc_dapm_context
*dapm
;
2654 component
->name
= fmt_single_name(dev
, &component
->id
);
2655 if (!component
->name
) {
2656 dev_err(dev
, "ASoC: Failed to allocate name\n");
2660 component
->dev
= dev
;
2661 component
->driver
= driver
;
2662 component
->probe
= component
->driver
->probe
;
2663 component
->remove
= component
->driver
->remove
;
2665 if (!component
->dapm_ptr
)
2666 component
->dapm_ptr
= &component
->dapm
;
2668 dapm
= component
->dapm_ptr
;
2670 dapm
->component
= component
;
2671 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
2672 dapm
->idle_bias_off
= true;
2673 if (driver
->seq_notifier
)
2674 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
2675 if (driver
->stream_event
)
2676 dapm
->stream_event
= snd_soc_component_stream_event
;
2678 component
->controls
= driver
->controls
;
2679 component
->num_controls
= driver
->num_controls
;
2680 component
->dapm_widgets
= driver
->dapm_widgets
;
2681 component
->num_dapm_widgets
= driver
->num_dapm_widgets
;
2682 component
->dapm_routes
= driver
->dapm_routes
;
2683 component
->num_dapm_routes
= driver
->num_dapm_routes
;
2685 INIT_LIST_HEAD(&component
->dai_list
);
2686 mutex_init(&component
->io_mutex
);
2691 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
2693 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
2695 /* Errors are legitimate for non-integer byte multiples */
2697 component
->val_bytes
= val_bytes
;
2700 #ifdef CONFIG_REGMAP
2703 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2704 * @component: The component for which to initialize the regmap instance
2705 * @regmap: The regmap instance that should be used by the component
2707 * This function allows deferred assignment of the regmap instance that is
2708 * associated with the component. Only use this if the regmap instance is not
2709 * yet ready when the component is registered. The function must also be called
2710 * before the first IO attempt of the component.
2712 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
2713 struct regmap
*regmap
)
2715 component
->regmap
= regmap
;
2716 snd_soc_component_setup_regmap(component
);
2718 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
2721 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2722 * @component: The component for which to de-initialize the regmap instance
2724 * Calls regmap_exit() on the regmap instance associated to the component and
2725 * removes the regmap instance from the component.
2727 * This function should only be used if snd_soc_component_init_regmap() was used
2728 * to initialize the regmap instance.
2730 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
2732 regmap_exit(component
->regmap
);
2733 component
->regmap
= NULL
;
2735 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
2739 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
2741 if (!component
->write
&& !component
->read
) {
2742 if (!component
->regmap
)
2743 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
2744 if (component
->regmap
)
2745 snd_soc_component_setup_regmap(component
);
2748 list_add(&component
->list
, &component_list
);
2751 static void snd_soc_component_add(struct snd_soc_component
*component
)
2753 mutex_lock(&client_mutex
);
2754 snd_soc_component_add_unlocked(component
);
2755 mutex_unlock(&client_mutex
);
2758 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
2760 snd_soc_unregister_dais(component
);
2761 kfree(component
->name
);
2764 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
2766 list_del(&component
->list
);
2769 int snd_soc_register_component(struct device
*dev
,
2770 const struct snd_soc_component_driver
*cmpnt_drv
,
2771 struct snd_soc_dai_driver
*dai_drv
,
2774 struct snd_soc_component
*cmpnt
;
2777 cmpnt
= kzalloc(sizeof(*cmpnt
), GFP_KERNEL
);
2779 dev_err(dev
, "ASoC: Failed to allocate memory\n");
2783 ret
= snd_soc_component_initialize(cmpnt
, cmpnt_drv
, dev
);
2787 cmpnt
->ignore_pmdown_time
= true;
2788 cmpnt
->registered_as_component
= true;
2790 ret
= snd_soc_register_dais(cmpnt
, dai_drv
, num_dai
, true);
2792 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
2796 snd_soc_component_add(cmpnt
);
2801 snd_soc_component_cleanup(cmpnt
);
2806 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
2809 * snd_soc_unregister_component - Unregister a component from the ASoC core
2812 void snd_soc_unregister_component(struct device
*dev
)
2814 struct snd_soc_component
*cmpnt
;
2816 mutex_lock(&client_mutex
);
2817 list_for_each_entry(cmpnt
, &component_list
, list
) {
2818 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
2821 mutex_unlock(&client_mutex
);
2825 snd_soc_component_del_unlocked(cmpnt
);
2826 mutex_unlock(&client_mutex
);
2827 snd_soc_component_cleanup(cmpnt
);
2830 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
2832 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
2834 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2836 return platform
->driver
->probe(platform
);
2839 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
2841 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2843 platform
->driver
->remove(platform
);
2847 * snd_soc_add_platform - Add a platform to the ASoC core
2848 * @dev: The parent device for the platform
2849 * @platform: The platform to add
2850 * @platform_driver: The driver for the platform
2852 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
2853 const struct snd_soc_platform_driver
*platform_drv
)
2857 ret
= snd_soc_component_initialize(&platform
->component
,
2858 &platform_drv
->component_driver
, dev
);
2862 platform
->dev
= dev
;
2863 platform
->driver
= platform_drv
;
2865 if (platform_drv
->probe
)
2866 platform
->component
.probe
= snd_soc_platform_drv_probe
;
2867 if (platform_drv
->remove
)
2868 platform
->component
.remove
= snd_soc_platform_drv_remove
;
2870 #ifdef CONFIG_DEBUG_FS
2871 platform
->component
.debugfs_prefix
= "platform";
2874 mutex_lock(&client_mutex
);
2875 snd_soc_component_add_unlocked(&platform
->component
);
2876 list_add(&platform
->list
, &platform_list
);
2877 mutex_unlock(&client_mutex
);
2879 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
2880 platform
->component
.name
);
2884 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
2887 * snd_soc_register_platform - Register a platform with the ASoC core
2889 * @platform: platform to register
2891 int snd_soc_register_platform(struct device
*dev
,
2892 const struct snd_soc_platform_driver
*platform_drv
)
2894 struct snd_soc_platform
*platform
;
2897 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
2899 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
2900 if (platform
== NULL
)
2903 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
2909 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
2912 * snd_soc_remove_platform - Remove a platform from the ASoC core
2913 * @platform: the platform to remove
2915 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
2918 mutex_lock(&client_mutex
);
2919 list_del(&platform
->list
);
2920 snd_soc_component_del_unlocked(&platform
->component
);
2921 mutex_unlock(&client_mutex
);
2923 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
2924 platform
->component
.name
);
2926 snd_soc_component_cleanup(&platform
->component
);
2928 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
2930 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
2932 struct snd_soc_platform
*platform
;
2934 mutex_lock(&client_mutex
);
2935 list_for_each_entry(platform
, &platform_list
, list
) {
2936 if (dev
== platform
->dev
) {
2937 mutex_unlock(&client_mutex
);
2941 mutex_unlock(&client_mutex
);
2945 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
2948 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
2950 * @platform: platform to unregister
2952 void snd_soc_unregister_platform(struct device
*dev
)
2954 struct snd_soc_platform
*platform
;
2956 platform
= snd_soc_lookup_platform(dev
);
2960 snd_soc_remove_platform(platform
);
2963 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
2965 static u64 codec_format_map
[] = {
2966 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
2967 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
2968 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
2969 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
2970 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
2971 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
2972 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2973 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2974 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
2975 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
2976 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
2977 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
2978 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
2979 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
2980 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
2981 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
2984 /* Fix up the DAI formats for endianness: codecs don't actually see
2985 * the endianness of the data but we're using the CPU format
2986 * definitions which do need to include endianness so we ensure that
2987 * codec DAIs always have both big and little endian variants set.
2989 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
2993 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
2994 if (stream
->formats
& codec_format_map
[i
])
2995 stream
->formats
|= codec_format_map
[i
];
2998 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
3000 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3002 return codec
->driver
->probe(codec
);
3005 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
3007 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3009 codec
->driver
->remove(codec
);
3012 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3013 unsigned int reg
, unsigned int val
)
3015 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3017 return codec
->driver
->write(codec
, reg
, val
);
3020 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3021 unsigned int reg
, unsigned int *val
)
3023 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3025 *val
= codec
->driver
->read(codec
, reg
);
3030 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3031 enum snd_soc_bias_level level
)
3033 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3035 return codec
->driver
->set_bias_level(codec
, level
);
3039 * snd_soc_register_codec - Register a codec with the ASoC core
3041 * @codec: codec to register
3043 int snd_soc_register_codec(struct device
*dev
,
3044 const struct snd_soc_codec_driver
*codec_drv
,
3045 struct snd_soc_dai_driver
*dai_drv
,
3048 struct snd_soc_codec
*codec
;
3049 struct snd_soc_dai
*dai
;
3052 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3054 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3058 codec
->component
.dapm_ptr
= &codec
->dapm
;
3059 codec
->component
.codec
= codec
;
3061 ret
= snd_soc_component_initialize(&codec
->component
,
3062 &codec_drv
->component_driver
, dev
);
3066 if (codec_drv
->controls
) {
3067 codec
->component
.controls
= codec_drv
->controls
;
3068 codec
->component
.num_controls
= codec_drv
->num_controls
;
3070 if (codec_drv
->dapm_widgets
) {
3071 codec
->component
.dapm_widgets
= codec_drv
->dapm_widgets
;
3072 codec
->component
.num_dapm_widgets
= codec_drv
->num_dapm_widgets
;
3074 if (codec_drv
->dapm_routes
) {
3075 codec
->component
.dapm_routes
= codec_drv
->dapm_routes
;
3076 codec
->component
.num_dapm_routes
= codec_drv
->num_dapm_routes
;
3079 if (codec_drv
->probe
)
3080 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3081 if (codec_drv
->remove
)
3082 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3083 if (codec_drv
->write
)
3084 codec
->component
.write
= snd_soc_codec_drv_write
;
3085 if (codec_drv
->read
)
3086 codec
->component
.read
= snd_soc_codec_drv_read
;
3087 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3088 codec
->dapm
.idle_bias_off
= codec_drv
->idle_bias_off
;
3089 codec
->dapm
.suspend_bias_off
= codec_drv
->suspend_bias_off
;
3090 if (codec_drv
->seq_notifier
)
3091 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3092 if (codec_drv
->set_bias_level
)
3093 codec
->dapm
.set_bias_level
= snd_soc_codec_set_bias_level
;
3095 codec
->driver
= codec_drv
;
3096 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3098 #ifdef CONFIG_DEBUG_FS
3099 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3100 codec
->component
.debugfs_prefix
= "codec";
3103 if (codec_drv
->get_regmap
)
3104 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3106 for (i
= 0; i
< num_dai
; i
++) {
3107 fixup_codec_formats(&dai_drv
[i
].playback
);
3108 fixup_codec_formats(&dai_drv
[i
].capture
);
3111 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3113 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3117 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3120 mutex_lock(&client_mutex
);
3121 snd_soc_component_add_unlocked(&codec
->component
);
3122 list_add(&codec
->list
, &codec_list
);
3123 mutex_unlock(&client_mutex
);
3125 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3126 codec
->component
.name
);
3130 snd_soc_component_cleanup(&codec
->component
);
3135 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3138 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3140 * @codec: codec to unregister
3142 void snd_soc_unregister_codec(struct device
*dev
)
3144 struct snd_soc_codec
*codec
;
3146 mutex_lock(&client_mutex
);
3147 list_for_each_entry(codec
, &codec_list
, list
) {
3148 if (dev
== codec
->dev
)
3151 mutex_unlock(&client_mutex
);
3155 list_del(&codec
->list
);
3156 snd_soc_component_del_unlocked(&codec
->component
);
3157 mutex_unlock(&client_mutex
);
3159 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3160 codec
->component
.name
);
3162 snd_soc_component_cleanup(&codec
->component
);
3163 snd_soc_cache_exit(codec
);
3166 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3168 /* Retrieve a card's name from device tree */
3169 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3170 const char *propname
)
3172 struct device_node
*np
;
3176 pr_err("card->dev is not set before calling %s\n", __func__
);
3180 np
= card
->dev
->of_node
;
3182 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3184 * EINVAL means the property does not exist. This is fine providing
3185 * card->name was previously set, which is checked later in
3186 * snd_soc_register_card.
3188 if (ret
< 0 && ret
!= -EINVAL
) {
3190 "ASoC: Property '%s' could not be read: %d\n",
3197 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3199 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3200 SND_SOC_DAPM_MIC("Microphone", NULL
),
3201 SND_SOC_DAPM_LINE("Line", NULL
),
3202 SND_SOC_DAPM_HP("Headphone", NULL
),
3203 SND_SOC_DAPM_SPK("Speaker", NULL
),
3206 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3207 const char *propname
)
3209 struct device_node
*np
= card
->dev
->of_node
;
3210 struct snd_soc_dapm_widget
*widgets
;
3211 const char *template, *wname
;
3212 int i
, j
, num_widgets
, ret
;
3214 num_widgets
= of_property_count_strings(np
, propname
);
3215 if (num_widgets
< 0) {
3217 "ASoC: Property '%s' does not exist\n", propname
);
3220 if (num_widgets
& 1) {
3222 "ASoC: Property '%s' length is not even\n", propname
);
3228 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3233 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3237 "ASoC: Could not allocate memory for widgets\n");
3241 for (i
= 0; i
< num_widgets
; i
++) {
3242 ret
= of_property_read_string_index(np
, propname
,
3246 "ASoC: Property '%s' index %d read error:%d\n",
3247 propname
, 2 * i
, ret
);
3251 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3252 if (!strncmp(template, simple_widgets
[j
].name
,
3253 strlen(simple_widgets
[j
].name
))) {
3254 widgets
[i
] = simple_widgets
[j
];
3259 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3261 "ASoC: DAPM widget '%s' is not supported\n",
3266 ret
= of_property_read_string_index(np
, propname
,
3271 "ASoC: Property '%s' index %d read error:%d\n",
3272 propname
, (2 * i
) + 1, ret
);
3276 widgets
[i
].name
= wname
;
3279 card
->of_dapm_widgets
= widgets
;
3280 card
->num_of_dapm_widgets
= num_widgets
;
3284 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3286 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3287 unsigned int *slots
,
3288 unsigned int *slot_width
)
3293 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3294 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3302 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3303 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
3313 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
3315 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3316 const char *propname
)
3318 struct device_node
*np
= card
->dev
->of_node
;
3320 struct snd_soc_dapm_route
*routes
;
3323 num_routes
= of_property_count_strings(np
, propname
);
3324 if (num_routes
< 0 || num_routes
& 1) {
3326 "ASoC: Property '%s' does not exist or its length is not even\n",
3332 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3337 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3341 "ASoC: Could not allocate DAPM route table\n");
3345 for (i
= 0; i
< num_routes
; i
++) {
3346 ret
= of_property_read_string_index(np
, propname
,
3347 2 * i
, &routes
[i
].sink
);
3350 "ASoC: Property '%s' index %d could not be read: %d\n",
3351 propname
, 2 * i
, ret
);
3354 ret
= of_property_read_string_index(np
, propname
,
3355 (2 * i
) + 1, &routes
[i
].source
);
3358 "ASoC: Property '%s' index %d could not be read: %d\n",
3359 propname
, (2 * i
) + 1, ret
);
3364 card
->num_of_dapm_routes
= num_routes
;
3365 card
->of_dapm_routes
= routes
;
3369 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3371 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
3373 struct device_node
**bitclkmaster
,
3374 struct device_node
**framemaster
)
3378 unsigned int format
= 0;
3384 } of_fmt_table
[] = {
3385 { "i2s", SND_SOC_DAIFMT_I2S
},
3386 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
3387 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
3388 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
3389 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
3390 { "ac97", SND_SOC_DAIFMT_AC97
},
3391 { "pdm", SND_SOC_DAIFMT_PDM
},
3392 { "msb", SND_SOC_DAIFMT_MSB
},
3393 { "lsb", SND_SOC_DAIFMT_LSB
},
3400 * check "[prefix]format = xxx"
3401 * SND_SOC_DAIFMT_FORMAT_MASK area
3403 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
3404 ret
= of_property_read_string(np
, prop
, &str
);
3406 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
3407 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
3408 format
|= of_fmt_table
[i
].val
;
3415 * check "[prefix]continuous-clock"
3416 * SND_SOC_DAIFMT_CLOCK_MASK area
3418 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
3419 if (of_get_property(np
, prop
, NULL
))
3420 format
|= SND_SOC_DAIFMT_CONT
;
3422 format
|= SND_SOC_DAIFMT_GATED
;
3425 * check "[prefix]bitclock-inversion"
3426 * check "[prefix]frame-inversion"
3427 * SND_SOC_DAIFMT_INV_MASK area
3429 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
3430 bit
= !!of_get_property(np
, prop
, NULL
);
3432 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
3433 frame
= !!of_get_property(np
, prop
, NULL
);
3435 switch ((bit
<< 4) + frame
) {
3437 format
|= SND_SOC_DAIFMT_IB_IF
;
3440 format
|= SND_SOC_DAIFMT_IB_NF
;
3443 format
|= SND_SOC_DAIFMT_NB_IF
;
3446 /* SND_SOC_DAIFMT_NB_NF is default */
3451 * check "[prefix]bitclock-master"
3452 * check "[prefix]frame-master"
3453 * SND_SOC_DAIFMT_MASTER_MASK area
3455 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
3456 bit
= !!of_get_property(np
, prop
, NULL
);
3457 if (bit
&& bitclkmaster
)
3458 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
3460 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
3461 frame
= !!of_get_property(np
, prop
, NULL
);
3462 if (frame
&& framemaster
)
3463 *framemaster
= of_parse_phandle(np
, prop
, 0);
3465 switch ((bit
<< 4) + frame
) {
3467 format
|= SND_SOC_DAIFMT_CBM_CFM
;
3470 format
|= SND_SOC_DAIFMT_CBM_CFS
;
3473 format
|= SND_SOC_DAIFMT_CBS_CFM
;
3476 format
|= SND_SOC_DAIFMT_CBS_CFS
;
3482 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
3484 static int snd_soc_get_dai_name(struct of_phandle_args
*args
,
3485 const char **dai_name
)
3487 struct snd_soc_component
*pos
;
3488 struct device_node
*component_of_node
;
3489 int ret
= -EPROBE_DEFER
;
3491 mutex_lock(&client_mutex
);
3492 list_for_each_entry(pos
, &component_list
, list
) {
3493 component_of_node
= pos
->dev
->of_node
;
3494 if (!component_of_node
&& pos
->dev
->parent
)
3495 component_of_node
= pos
->dev
->parent
->of_node
;
3497 if (component_of_node
!= args
->np
)
3500 if (pos
->driver
->of_xlate_dai_name
) {
3501 ret
= pos
->driver
->of_xlate_dai_name(pos
,
3507 switch (args
->args_count
) {
3509 id
= 0; /* same as dai_drv[0] */
3519 if (id
< 0 || id
>= pos
->num_dai
) {
3526 *dai_name
= pos
->dai_drv
[id
].name
;
3528 *dai_name
= pos
->name
;
3533 mutex_unlock(&client_mutex
);
3537 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
3538 const char **dai_name
)
3540 struct of_phandle_args args
;
3543 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
3544 "#sound-dai-cells", 0, &args
);
3548 ret
= snd_soc_get_dai_name(&args
, dai_name
);
3550 of_node_put(args
.np
);
3554 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
3557 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3559 * @of_node: Device node
3560 * @dai_link: DAI link
3562 * Builds an array of CODEC DAI components from the DAI link property
3564 * The array is set in the DAI link and the number of DAIs is set accordingly.
3565 * The device nodes in the array (of_node) must be dereferenced by the caller.
3567 * Returns 0 for success
3569 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
3570 struct device_node
*of_node
,
3571 struct snd_soc_dai_link
*dai_link
)
3573 struct of_phandle_args args
;
3574 struct snd_soc_dai_link_component
*component
;
3576 int index
, num_codecs
, ret
;
3578 /* Count the number of CODECs */
3580 num_codecs
= of_count_phandle_with_args(of_node
, name
,
3581 "#sound-dai-cells");
3582 if (num_codecs
<= 0) {
3583 if (num_codecs
== -ENOENT
)
3584 dev_err(dev
, "No 'sound-dai' property\n");
3586 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
3589 component
= devm_kzalloc(dev
,
3590 sizeof *component
* num_codecs
,
3594 dai_link
->codecs
= component
;
3595 dai_link
->num_codecs
= num_codecs
;
3597 /* Parse the list */
3598 for (index
= 0, component
= dai_link
->codecs
;
3599 index
< dai_link
->num_codecs
;
3600 index
++, component
++) {
3601 ret
= of_parse_phandle_with_args(of_node
, name
,
3606 component
->of_node
= args
.np
;
3607 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
3613 for (index
= 0, component
= dai_link
->codecs
;
3614 index
< dai_link
->num_codecs
;
3615 index
++, component
++) {
3616 if (!component
->of_node
)
3618 of_node_put(component
->of_node
);
3619 component
->of_node
= NULL
;
3621 dai_link
->codecs
= NULL
;
3622 dai_link
->num_codecs
= 0;
3625 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
3627 static int __init
snd_soc_init(void)
3629 snd_soc_debugfs_init();
3630 snd_soc_util_init();
3632 return platform_driver_register(&soc_driver
);
3634 module_init(snd_soc_init
);
3636 static void __exit
snd_soc_exit(void)
3638 snd_soc_util_exit();
3639 snd_soc_debugfs_exit();
3641 #ifdef CONFIG_DEBUG_FS
3643 platform_driver_unregister(&soc_driver
);
3645 module_exit(snd_soc_exit
);
3647 /* Module information */
3648 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3649 MODULE_DESCRIPTION("ALSA SoC Core");
3650 MODULE_LICENSE("GPL");
3651 MODULE_ALIAS("platform:soc-audio");