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 char regbuf
[regsize
+ 1];
98 /* since tmpbuf is allocated on the stack, warn the callers if they
99 * try to abuse this function */
102 /* +2 for ': ' and + 1 for '\n' */
103 if (wordsize
+ regsize
+ 2 + 1 != len
)
106 ret
= snd_soc_read(codec
, reg
);
108 memset(regbuf
, 'X', regsize
);
109 regbuf
[regsize
] = '\0';
111 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
114 /* prepare the buffer */
115 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
116 /* copy it back to the caller without the '\0' */
117 memcpy(buf
, tmpbuf
, len
);
122 /* codec register dump */
123 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
124 size_t count
, loff_t pos
)
127 int wordsize
, regsize
;
132 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
133 regsize
= codec
->driver
->reg_word_size
* 2;
135 len
= wordsize
+ regsize
+ 2 + 1;
137 if (!codec
->driver
->reg_cache_size
)
140 if (codec
->driver
->reg_cache_step
)
141 step
= codec
->driver
->reg_cache_step
;
143 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
144 /* only support larger than PAGE_SIZE bytes debugfs
145 * entries for the default case */
147 if (total
+ len
>= count
- 1)
149 format_register_str(codec
, i
, buf
+ total
, len
);
155 total
= min(total
, count
- 1);
160 static ssize_t
codec_reg_show(struct device
*dev
,
161 struct device_attribute
*attr
, char *buf
)
163 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
165 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
168 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
170 static ssize_t
pmdown_time_show(struct device
*dev
,
171 struct device_attribute
*attr
, char *buf
)
173 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
175 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
178 static ssize_t
pmdown_time_set(struct device
*dev
,
179 struct device_attribute
*attr
,
180 const char *buf
, size_t count
)
182 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
185 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
192 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
194 static struct attribute
*soc_dev_attrs
[] = {
195 &dev_attr_codec_reg
.attr
,
196 &dev_attr_pmdown_time
.attr
,
200 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
201 struct attribute
*attr
, int idx
)
203 struct device
*dev
= kobj_to_dev(kobj
);
204 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
206 if (attr
== &dev_attr_pmdown_time
.attr
)
207 return attr
->mode
; /* always visible */
208 return rtd
->codec
? attr
->mode
: 0; /* enabled only with codec */
211 static const struct attribute_group soc_dapm_dev_group
= {
212 .attrs
= soc_dapm_dev_attrs
,
213 .is_visible
= soc_dev_attr_is_visible
,
216 static const struct attribute_group soc_dev_roup
= {
217 .attrs
= soc_dev_attrs
,
218 .is_visible
= soc_dev_attr_is_visible
,
221 static const struct attribute_group
*soc_dev_attr_groups
[] = {
227 #ifdef CONFIG_DEBUG_FS
228 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
229 size_t count
, loff_t
*ppos
)
232 struct snd_soc_codec
*codec
= file
->private_data
;
235 if (*ppos
< 0 || !count
)
238 buf
= kmalloc(count
, GFP_KERNEL
);
242 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
244 if (copy_to_user(user_buf
, buf
, ret
)) {
255 static ssize_t
codec_reg_write_file(struct file
*file
,
256 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
261 unsigned long reg
, value
;
262 struct snd_soc_codec
*codec
= file
->private_data
;
265 buf_size
= min(count
, (sizeof(buf
)-1));
266 if (copy_from_user(buf
, user_buf
, buf_size
))
270 while (*start
== ' ')
272 reg
= simple_strtoul(start
, &start
, 16);
273 while (*start
== ' ')
275 ret
= kstrtoul(start
, 16, &value
);
279 /* Userspace has been fiddling around behind the kernel's back */
280 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
282 snd_soc_write(codec
, reg
, value
);
286 static const struct file_operations codec_reg_fops
= {
288 .read
= codec_reg_read_file
,
289 .write
= codec_reg_write_file
,
290 .llseek
= default_llseek
,
293 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
295 if (!component
->card
->debugfs_card_root
)
298 if (component
->debugfs_prefix
) {
301 name
= kasprintf(GFP_KERNEL
, "%s:%s",
302 component
->debugfs_prefix
, component
->name
);
304 component
->debugfs_root
= debugfs_create_dir(name
,
305 component
->card
->debugfs_card_root
);
309 component
->debugfs_root
= debugfs_create_dir(component
->name
,
310 component
->card
->debugfs_card_root
);
313 if (!component
->debugfs_root
) {
314 dev_warn(component
->dev
,
315 "ASoC: Failed to create component debugfs directory\n");
319 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
320 component
->debugfs_root
);
322 if (component
->init_debugfs
)
323 component
->init_debugfs(component
);
326 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
328 debugfs_remove_recursive(component
->debugfs_root
);
331 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
333 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
335 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
336 codec
->component
.debugfs_root
,
337 codec
, &codec_reg_fops
);
338 if (!codec
->debugfs_reg
)
340 "ASoC: Failed to create codec register debugfs file\n");
343 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
344 size_t count
, loff_t
*ppos
)
346 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
347 ssize_t len
, ret
= 0;
348 struct snd_soc_codec
*codec
;
353 mutex_lock(&client_mutex
);
355 list_for_each_entry(codec
, &codec_list
, list
) {
356 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
357 codec
->component
.name
);
360 if (ret
> PAGE_SIZE
) {
366 mutex_unlock(&client_mutex
);
369 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
376 static const struct file_operations codec_list_fops
= {
377 .read
= codec_list_read_file
,
378 .llseek
= default_llseek
,/* read accesses f_pos */
381 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
382 size_t count
, loff_t
*ppos
)
384 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
385 ssize_t len
, ret
= 0;
386 struct snd_soc_component
*component
;
387 struct snd_soc_dai
*dai
;
392 mutex_lock(&client_mutex
);
394 list_for_each_entry(component
, &component_list
, list
) {
395 list_for_each_entry(dai
, &component
->dai_list
, list
) {
396 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
400 if (ret
> PAGE_SIZE
) {
407 mutex_unlock(&client_mutex
);
409 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
416 static const struct file_operations dai_list_fops
= {
417 .read
= dai_list_read_file
,
418 .llseek
= default_llseek
,/* read accesses f_pos */
421 static ssize_t
platform_list_read_file(struct file
*file
,
422 char __user
*user_buf
,
423 size_t count
, loff_t
*ppos
)
425 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
426 ssize_t len
, ret
= 0;
427 struct snd_soc_platform
*platform
;
432 mutex_lock(&client_mutex
);
434 list_for_each_entry(platform
, &platform_list
, list
) {
435 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
436 platform
->component
.name
);
439 if (ret
> PAGE_SIZE
) {
445 mutex_unlock(&client_mutex
);
447 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
454 static const struct file_operations platform_list_fops
= {
455 .read
= platform_list_read_file
,
456 .llseek
= default_llseek
,/* read accesses f_pos */
459 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
461 if (!snd_soc_debugfs_root
)
464 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
465 snd_soc_debugfs_root
);
466 if (!card
->debugfs_card_root
) {
468 "ASoC: Failed to create card debugfs directory\n");
472 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
473 card
->debugfs_card_root
,
475 if (!card
->debugfs_pop_time
)
477 "ASoC: Failed to create pop time debugfs file\n");
480 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
482 debugfs_remove_recursive(card
->debugfs_card_root
);
486 static void snd_soc_debugfs_init(void)
488 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
489 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
490 pr_warn("ASoC: Failed to create debugfs directory\n");
491 snd_soc_debugfs_root
= NULL
;
495 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
497 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
499 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
501 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
503 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
504 &platform_list_fops
))
505 pr_warn("ASoC: Failed to create platform list debugfs file\n");
508 static void snd_soc_debugfs_exit(void)
510 debugfs_remove_recursive(snd_soc_debugfs_root
);
515 #define soc_init_codec_debugfs NULL
517 static inline void soc_init_component_debugfs(
518 struct snd_soc_component
*component
)
522 static inline void soc_cleanup_component_debugfs(
523 struct snd_soc_component
*component
)
527 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
531 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
535 static inline void snd_soc_debugfs_init(void)
539 static inline void snd_soc_debugfs_exit(void)
545 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
546 const char *dai_link
, int stream
)
550 for (i
= 0; i
< card
->num_links
; i
++) {
551 if (card
->rtd
[i
].dai_link
->no_pcm
&&
552 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
553 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
555 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
558 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
560 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
561 const char *dai_link
)
565 for (i
= 0; i
< card
->num_links
; i
++) {
566 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
567 return &card
->rtd
[i
];
569 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
572 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
574 static void codec2codec_close_delayed_work(struct work_struct
*work
)
576 /* Currently nothing to do for c2c links
577 * Since c2c links are internal nodes in the DAPM graph and
578 * don't interface with the outside world or application layer
579 * we don't have to do any special handling on close.
583 #ifdef CONFIG_PM_SLEEP
584 /* powers down audio subsystem for suspend */
585 int snd_soc_suspend(struct device
*dev
)
587 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
588 struct snd_soc_codec
*codec
;
591 /* If the card is not initialized yet there is nothing to do */
592 if (!card
->instantiated
)
595 /* Due to the resume being scheduled into a workqueue we could
596 * suspend before that's finished - wait for it to complete.
598 snd_power_lock(card
->snd_card
);
599 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
600 snd_power_unlock(card
->snd_card
);
602 /* we're going to block userspace touching us until resume completes */
603 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
605 /* mute any active DACs */
606 for (i
= 0; i
< card
->num_rtd
; i
++) {
608 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
611 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
612 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
613 struct snd_soc_dai_driver
*drv
= dai
->driver
;
615 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
616 drv
->ops
->digital_mute(dai
, 1);
620 /* suspend all pcms */
621 for (i
= 0; i
< card
->num_rtd
; i
++) {
622 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
625 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
628 if (card
->suspend_pre
)
629 card
->suspend_pre(card
);
631 for (i
= 0; i
< card
->num_rtd
; i
++) {
632 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
634 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
637 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
638 cpu_dai
->driver
->suspend(cpu_dai
);
641 /* close any waiting streams */
642 for (i
= 0; i
< card
->num_rtd
; i
++)
643 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
645 for (i
= 0; i
< card
->num_rtd
; i
++) {
647 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
650 snd_soc_dapm_stream_event(&card
->rtd
[i
],
651 SNDRV_PCM_STREAM_PLAYBACK
,
652 SND_SOC_DAPM_STREAM_SUSPEND
);
654 snd_soc_dapm_stream_event(&card
->rtd
[i
],
655 SNDRV_PCM_STREAM_CAPTURE
,
656 SND_SOC_DAPM_STREAM_SUSPEND
);
659 /* Recheck all endpoints too, their state is affected by suspend */
660 dapm_mark_endpoints_dirty(card
);
661 snd_soc_dapm_sync(&card
->dapm
);
663 /* suspend all CODECs */
664 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
665 /* If there are paths active then the CODEC will be held with
666 * bias _ON and should not be suspended. */
667 if (!codec
->suspended
) {
668 switch (codec
->dapm
.bias_level
) {
669 case SND_SOC_BIAS_STANDBY
:
671 * If the CODEC is capable of idle
672 * bias off then being in STANDBY
673 * means it's doing something,
674 * otherwise fall through.
676 if (codec
->dapm
.idle_bias_off
) {
678 "ASoC: idle_bias_off CODEC on over suspend\n");
682 case SND_SOC_BIAS_OFF
:
683 if (codec
->driver
->suspend
)
684 codec
->driver
->suspend(codec
);
685 codec
->suspended
= 1;
686 if (codec
->component
.regmap
)
687 regcache_mark_dirty(codec
->component
.regmap
);
688 /* deactivate pins to sleep state */
689 pinctrl_pm_select_sleep_state(codec
->dev
);
693 "ASoC: CODEC is on over suspend\n");
699 for (i
= 0; i
< card
->num_rtd
; i
++) {
700 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
702 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
705 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
706 cpu_dai
->driver
->suspend(cpu_dai
);
708 /* deactivate pins to sleep state */
709 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
712 if (card
->suspend_post
)
713 card
->suspend_post(card
);
717 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
719 /* deferred resume work, so resume can complete before we finished
720 * setting our codec back up, which can be very slow on I2C
722 static void soc_resume_deferred(struct work_struct
*work
)
724 struct snd_soc_card
*card
=
725 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
726 struct snd_soc_codec
*codec
;
729 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
730 * so userspace apps are blocked from touching us
733 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
735 /* Bring us up into D2 so that DAPM starts enabling things */
736 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
738 if (card
->resume_pre
)
739 card
->resume_pre(card
);
741 /* resume control bus DAIs */
742 for (i
= 0; i
< card
->num_rtd
; i
++) {
743 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
745 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
748 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
749 cpu_dai
->driver
->resume(cpu_dai
);
752 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
753 if (codec
->suspended
) {
754 if (codec
->driver
->resume
)
755 codec
->driver
->resume(codec
);
756 codec
->suspended
= 0;
760 for (i
= 0; i
< card
->num_rtd
; i
++) {
762 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
765 snd_soc_dapm_stream_event(&card
->rtd
[i
],
766 SNDRV_PCM_STREAM_PLAYBACK
,
767 SND_SOC_DAPM_STREAM_RESUME
);
769 snd_soc_dapm_stream_event(&card
->rtd
[i
],
770 SNDRV_PCM_STREAM_CAPTURE
,
771 SND_SOC_DAPM_STREAM_RESUME
);
774 /* unmute any active DACs */
775 for (i
= 0; i
< card
->num_rtd
; i
++) {
777 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
780 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
781 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
782 struct snd_soc_dai_driver
*drv
= dai
->driver
;
784 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
785 drv
->ops
->digital_mute(dai
, 0);
789 for (i
= 0; i
< card
->num_rtd
; i
++) {
790 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
792 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
795 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
796 cpu_dai
->driver
->resume(cpu_dai
);
799 if (card
->resume_post
)
800 card
->resume_post(card
);
802 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
804 /* userspace can access us now we are back as we were before */
805 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
807 /* Recheck all endpoints too, their state is affected by suspend */
808 dapm_mark_endpoints_dirty(card
);
809 snd_soc_dapm_sync(&card
->dapm
);
812 /* powers up audio subsystem after a suspend */
813 int snd_soc_resume(struct device
*dev
)
815 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
816 bool bus_control
= false;
819 /* If the card is not initialized yet there is nothing to do */
820 if (!card
->instantiated
)
823 /* activate pins from sleep state */
824 for (i
= 0; i
< card
->num_rtd
; i
++) {
825 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
826 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
827 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
831 pinctrl_pm_select_default_state(cpu_dai
->dev
);
833 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
834 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
835 if (codec_dai
->active
)
836 pinctrl_pm_select_default_state(codec_dai
->dev
);
841 * DAIs that also act as the control bus master might have other drivers
842 * hanging off them so need to resume immediately. Other drivers don't
843 * have that problem and may take a substantial amount of time to resume
844 * due to I/O costs and anti-pop so handle them out of line.
846 for (i
= 0; i
< card
->num_rtd
; i
++) {
847 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
848 bus_control
|= cpu_dai
->driver
->bus_control
;
851 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
852 soc_resume_deferred(&card
->deferred_resume_work
);
854 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
855 if (!schedule_work(&card
->deferred_resume_work
))
856 dev_err(dev
, "ASoC: resume work item may be lost\n");
861 EXPORT_SYMBOL_GPL(snd_soc_resume
);
863 #define snd_soc_suspend NULL
864 #define snd_soc_resume NULL
867 static const struct snd_soc_dai_ops null_dai_ops
= {
870 static struct snd_soc_component
*soc_find_component(
871 const struct device_node
*of_node
, const char *name
)
873 struct snd_soc_component
*component
;
875 lockdep_assert_held(&client_mutex
);
877 list_for_each_entry(component
, &component_list
, list
) {
879 if (component
->dev
->of_node
== of_node
)
881 } else if (strcmp(component
->name
, name
) == 0) {
889 static struct snd_soc_dai
*snd_soc_find_dai(
890 const struct snd_soc_dai_link_component
*dlc
)
892 struct snd_soc_component
*component
;
893 struct snd_soc_dai
*dai
;
895 lockdep_assert_held(&client_mutex
);
897 /* Find CPU DAI from registered DAIs*/
898 list_for_each_entry(component
, &component_list
, list
) {
899 if (dlc
->of_node
&& component
->dev
->of_node
!= dlc
->of_node
)
901 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
903 list_for_each_entry(dai
, &component
->dai_list
, list
) {
904 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
))
914 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
916 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
917 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
918 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
919 struct snd_soc_dai_link_component cpu_dai_component
;
920 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
921 struct snd_soc_platform
*platform
;
922 const char *platform_name
;
925 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
927 cpu_dai_component
.name
= dai_link
->cpu_name
;
928 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
929 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
930 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
932 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
933 dai_link
->cpu_dai_name
);
934 return -EPROBE_DEFER
;
937 rtd
->num_codecs
= dai_link
->num_codecs
;
939 /* Find CODEC from registered CODECs */
940 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
941 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
942 if (!codec_dais
[i
]) {
943 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
945 return -EPROBE_DEFER
;
949 /* Single codec links expect codec and codec_dai in runtime data */
950 rtd
->codec_dai
= codec_dais
[0];
951 rtd
->codec
= rtd
->codec_dai
->codec
;
953 /* if there's no platform we match on the empty platform */
954 platform_name
= dai_link
->platform_name
;
955 if (!platform_name
&& !dai_link
->platform_of_node
)
956 platform_name
= "snd-soc-dummy";
958 /* find one from the set of registered platforms */
959 list_for_each_entry(platform
, &platform_list
, list
) {
960 if (dai_link
->platform_of_node
) {
961 if (platform
->dev
->of_node
!=
962 dai_link
->platform_of_node
)
965 if (strcmp(platform
->component
.name
, platform_name
))
969 rtd
->platform
= platform
;
971 if (!rtd
->platform
) {
972 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
973 dai_link
->platform_name
);
974 return -EPROBE_DEFER
;
982 static void soc_remove_component(struct snd_soc_component
*component
)
984 if (!component
->probed
)
987 /* This is a HACK and will be removed soon */
988 if (component
->codec
)
989 list_del(&component
->codec
->card_list
);
991 if (component
->remove
)
992 component
->remove(component
);
994 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
996 soc_cleanup_component_debugfs(component
);
997 component
->probed
= 0;
998 module_put(component
->dev
->driver
->owner
);
1001 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1005 if (dai
&& dai
->probed
&&
1006 dai
->driver
->remove_order
== order
) {
1007 if (dai
->driver
->remove
) {
1008 err
= dai
->driver
->remove(dai
);
1011 "ASoC: failed to remove %s: %d\n",
1018 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1020 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1023 /* unregister the rtd device */
1024 if (rtd
->dev_registered
) {
1025 device_unregister(rtd
->dev
);
1026 rtd
->dev_registered
= 0;
1029 /* remove the CODEC DAI */
1030 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1031 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1033 soc_remove_dai(rtd
->cpu_dai
, order
);
1036 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1039 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1040 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1041 struct snd_soc_platform
*platform
= rtd
->platform
;
1042 struct snd_soc_component
*component
;
1045 /* remove the platform */
1046 if (platform
&& platform
->component
.driver
->remove_order
== order
)
1047 soc_remove_component(&platform
->component
);
1049 /* remove the CODEC-side CODEC */
1050 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1051 component
= rtd
->codec_dais
[i
]->component
;
1052 if (component
->driver
->remove_order
== order
)
1053 soc_remove_component(component
);
1056 /* remove any CPU-side CODEC */
1058 if (cpu_dai
->component
->driver
->remove_order
== order
)
1059 soc_remove_component(cpu_dai
->component
);
1063 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1067 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1069 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1070 soc_remove_link_dais(card
, dai
, order
);
1073 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1075 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1076 soc_remove_link_components(card
, dai
, order
);
1082 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1083 struct snd_soc_component
*component
)
1087 if (card
->codec_conf
== NULL
)
1090 for (i
= 0; i
< card
->num_configs
; i
++) {
1091 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1092 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1094 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1096 component
->name_prefix
= map
->name_prefix
;
1101 static int soc_probe_component(struct snd_soc_card
*card
,
1102 struct snd_soc_component
*component
)
1104 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1105 struct snd_soc_dai
*dai
;
1108 if (component
->probed
)
1111 component
->card
= card
;
1113 soc_set_name_prefix(card
, component
);
1115 if (!try_module_get(component
->dev
->driver
->owner
))
1118 soc_init_component_debugfs(component
);
1120 if (component
->dapm_widgets
) {
1121 ret
= snd_soc_dapm_new_controls(dapm
, component
->dapm_widgets
,
1122 component
->num_dapm_widgets
);
1125 dev_err(component
->dev
,
1126 "Failed to create new controls %d\n", ret
);
1131 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1132 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1134 dev_err(component
->dev
,
1135 "Failed to create DAI widgets %d\n", ret
);
1140 if (component
->probe
) {
1141 ret
= component
->probe(component
);
1143 dev_err(component
->dev
,
1144 "ASoC: failed to probe component %d\n", ret
);
1148 WARN(dapm
->idle_bias_off
&&
1149 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1150 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1154 if (component
->controls
)
1155 snd_soc_add_component_controls(component
, component
->controls
,
1156 component
->num_controls
);
1157 if (component
->dapm_routes
)
1158 snd_soc_dapm_add_routes(dapm
, component
->dapm_routes
,
1159 component
->num_dapm_routes
);
1161 component
->probed
= 1;
1162 list_add(&dapm
->list
, &card
->dapm_list
);
1164 /* This is a HACK and will be removed soon */
1165 if (component
->codec
)
1166 list_add(&component
->codec
->card_list
, &card
->codec_dev_list
);
1171 soc_cleanup_component_debugfs(component
);
1172 module_put(component
->dev
->driver
->owner
);
1177 static void rtd_release(struct device
*dev
)
1182 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1187 /* register the rtd device */
1188 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1191 device_initialize(rtd
->dev
);
1192 rtd
->dev
->parent
= rtd
->card
->dev
;
1193 rtd
->dev
->release
= rtd_release
;
1194 rtd
->dev
->groups
= soc_dev_attr_groups
;
1195 dev_set_name(rtd
->dev
, "%s", name
);
1196 dev_set_drvdata(rtd
->dev
, rtd
);
1197 mutex_init(&rtd
->pcm_mutex
);
1198 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1199 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1200 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1201 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1202 ret
= device_add(rtd
->dev
);
1204 /* calling put_device() here to free the rtd->dev */
1205 put_device(rtd
->dev
);
1206 dev_err(rtd
->card
->dev
,
1207 "ASoC: failed to register runtime device: %d\n", ret
);
1210 rtd
->dev_registered
= 1;
1214 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1217 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1218 struct snd_soc_platform
*platform
= rtd
->platform
;
1219 struct snd_soc_component
*component
;
1222 /* probe the CPU-side component, if it is a CODEC */
1223 component
= rtd
->cpu_dai
->component
;
1224 if (component
->driver
->probe_order
== order
) {
1225 ret
= soc_probe_component(card
, component
);
1230 /* probe the CODEC-side components */
1231 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1232 component
= rtd
->codec_dais
[i
]->component
;
1233 if (component
->driver
->probe_order
== order
) {
1234 ret
= soc_probe_component(card
, component
);
1240 /* probe the platform */
1241 if (platform
->component
.driver
->probe_order
== order
) {
1242 ret
= soc_probe_component(card
, &platform
->component
);
1250 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1254 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1255 if (dai
->driver
->probe
) {
1256 ret
= dai
->driver
->probe(dai
);
1259 "ASoC: failed to probe DAI %s: %d\n",
1271 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1272 struct snd_soc_dai_link
*dai_link
,
1273 struct snd_soc_pcm_runtime
*rtd
)
1275 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1276 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1277 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1280 if (rtd
->num_codecs
> 1)
1281 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1283 /* link the DAI widgets */
1284 play_w
= codec_dai
->playback_widget
;
1285 capture_w
= cpu_dai
->capture_widget
;
1286 if (play_w
&& capture_w
) {
1287 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1288 dai_link
->num_params
, capture_w
,
1291 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1292 play_w
->name
, capture_w
->name
, ret
);
1297 play_w
= cpu_dai
->playback_widget
;
1298 capture_w
= codec_dai
->capture_widget
;
1299 if (play_w
&& capture_w
) {
1300 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1301 dai_link
->num_params
, capture_w
,
1304 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1305 play_w
->name
, capture_w
->name
, ret
);
1313 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1315 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1316 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1317 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1320 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1321 card
->name
, num
, order
);
1323 /* set default power off timeout */
1324 rtd
->pmdown_time
= pmdown_time
;
1326 ret
= soc_probe_dai(cpu_dai
, order
);
1330 /* probe the CODEC DAI */
1331 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1332 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1337 /* complete DAI probe during last probe */
1338 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1341 /* do machine specific initialization */
1342 if (dai_link
->init
) {
1343 ret
= dai_link
->init(rtd
);
1345 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1346 dai_link
->name
, ret
);
1351 if (dai_link
->dai_fmt
)
1352 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1354 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1358 #ifdef CONFIG_DEBUG_FS
1359 /* add DPCM sysfs entries */
1360 if (dai_link
->dynamic
)
1361 soc_dpcm_debugfs_add(rtd
);
1364 if (cpu_dai
->driver
->compress_dai
) {
1365 /*create compress_device"*/
1366 ret
= soc_new_compress(rtd
, num
);
1368 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1369 dai_link
->stream_name
);
1374 if (!dai_link
->params
) {
1375 /* create the pcm */
1376 ret
= soc_new_pcm(rtd
, num
);
1378 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1379 dai_link
->stream_name
, ret
);
1383 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1384 codec2codec_close_delayed_work
);
1386 /* link the DAI widgets */
1387 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1396 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1398 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1399 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1400 const char *name
= aux_dev
->codec_name
;
1402 rtd
->component
= soc_find_component(aux_dev
->codec_of_node
, name
);
1403 if (!rtd
->component
) {
1404 if (aux_dev
->codec_of_node
)
1405 name
= of_node_full_name(aux_dev
->codec_of_node
);
1407 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1408 return -EPROBE_DEFER
;
1412 * Some places still reference rtd->codec, so we have to keep that
1413 * initialized if the component is a CODEC. Once all those references
1414 * have been removed, this code can be removed as well.
1416 rtd
->codec
= rtd
->component
->codec
;
1421 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1423 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1424 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1427 ret
= soc_probe_component(card
, rtd
->component
);
1431 /* do machine specific initialization */
1432 if (aux_dev
->init
) {
1433 ret
= aux_dev
->init(rtd
->component
);
1435 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1436 aux_dev
->name
, ret
);
1441 return soc_post_component_init(rtd
, aux_dev
->name
);
1444 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1446 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1447 struct snd_soc_component
*component
= rtd
->component
;
1449 /* unregister the rtd device */
1450 if (rtd
->dev_registered
) {
1451 device_unregister(rtd
->dev
);
1452 rtd
->dev_registered
= 0;
1455 if (component
&& component
->probed
)
1456 soc_remove_component(component
);
1459 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1463 if (codec
->cache_init
)
1466 ret
= snd_soc_cache_init(codec
);
1469 "ASoC: Failed to set cache compression type: %d\n",
1473 codec
->cache_init
= 1;
1478 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1479 * @rtd: The runtime for which the DAI link format should be changed
1480 * @dai_fmt: The new DAI link format
1482 * This function updates the DAI link format for all DAIs connected to the DAI
1483 * link for the specified runtime.
1485 * Note: For setups with a static format set the dai_fmt field in the
1486 * corresponding snd_dai_link struct instead of using this function.
1488 * Returns 0 on success, otherwise a negative error code.
1490 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1491 unsigned int dai_fmt
)
1493 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1494 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1498 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1499 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1501 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1502 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1503 dev_warn(codec_dai
->dev
,
1504 "ASoC: Failed to set DAI format: %d\n", ret
);
1509 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1510 if (cpu_dai
->codec
) {
1511 unsigned int inv_dai_fmt
;
1513 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1514 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1515 case SND_SOC_DAIFMT_CBM_CFM
:
1516 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1518 case SND_SOC_DAIFMT_CBM_CFS
:
1519 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1521 case SND_SOC_DAIFMT_CBS_CFM
:
1522 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1524 case SND_SOC_DAIFMT_CBS_CFS
:
1525 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1529 dai_fmt
= inv_dai_fmt
;
1532 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1533 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1534 dev_warn(cpu_dai
->dev
,
1535 "ASoC: Failed to set DAI format: %d\n", ret
);
1541 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1543 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1545 struct snd_soc_codec
*codec
;
1548 mutex_lock(&client_mutex
);
1549 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1552 for (i
= 0; i
< card
->num_links
; i
++) {
1553 ret
= soc_bind_dai_link(card
, i
);
1558 /* bind aux_devs too */
1559 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1560 ret
= soc_bind_aux_dev(card
, i
);
1565 /* initialize the register cache for each available codec */
1566 list_for_each_entry(codec
, &codec_list
, list
) {
1567 if (codec
->cache_init
)
1569 ret
= snd_soc_init_codec_cache(codec
);
1574 /* card bind complete so register a sound card */
1575 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1576 card
->owner
, 0, &card
->snd_card
);
1579 "ASoC: can't create sound card for card %s: %d\n",
1584 soc_init_card_debugfs(card
);
1586 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1587 card
->dapm
.dev
= card
->dev
;
1588 card
->dapm
.card
= card
;
1589 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1591 #ifdef CONFIG_DEBUG_FS
1592 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1595 #ifdef CONFIG_PM_SLEEP
1596 /* deferred resume work */
1597 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1600 if (card
->dapm_widgets
)
1601 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1602 card
->num_dapm_widgets
);
1604 if (card
->of_dapm_widgets
)
1605 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
1606 card
->num_of_dapm_widgets
);
1608 /* initialise the sound card only once */
1610 ret
= card
->probe(card
);
1612 goto card_probe_error
;
1615 /* probe all components used by DAI links on this card */
1616 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1618 for (i
= 0; i
< card
->num_links
; i
++) {
1619 ret
= soc_probe_link_components(card
, i
, order
);
1622 "ASoC: failed to instantiate card %d\n",
1629 /* probe all DAI links on this card */
1630 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1632 for (i
= 0; i
< card
->num_links
; i
++) {
1633 ret
= soc_probe_link_dais(card
, i
, order
);
1636 "ASoC: failed to instantiate card %d\n",
1643 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1644 ret
= soc_probe_aux_dev(card
, i
);
1647 "ASoC: failed to add auxiliary devices %d\n",
1649 goto probe_aux_dev_err
;
1653 snd_soc_dapm_link_dai_widgets(card
);
1654 snd_soc_dapm_connect_dai_link_widgets(card
);
1657 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1659 if (card
->dapm_routes
)
1660 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1661 card
->num_dapm_routes
);
1663 if (card
->of_dapm_routes
)
1664 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
1665 card
->num_of_dapm_routes
);
1667 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1669 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1670 "%s", card
->long_name
? card
->long_name
: card
->name
);
1671 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1672 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1673 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1674 switch (card
->snd_card
->driver
[i
]) {
1680 if (!isalnum(card
->snd_card
->driver
[i
]))
1681 card
->snd_card
->driver
[i
] = '_';
1686 if (card
->late_probe
) {
1687 ret
= card
->late_probe(card
);
1689 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1691 goto probe_aux_dev_err
;
1695 snd_soc_dapm_new_widgets(card
);
1697 ret
= snd_card_register(card
->snd_card
);
1699 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1701 goto probe_aux_dev_err
;
1704 card
->instantiated
= 1;
1705 snd_soc_dapm_sync(&card
->dapm
);
1706 mutex_unlock(&card
->mutex
);
1707 mutex_unlock(&client_mutex
);
1712 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1713 soc_remove_aux_dev(card
, i
);
1716 soc_remove_dai_links(card
);
1722 soc_cleanup_card_debugfs(card
);
1723 snd_card_free(card
->snd_card
);
1726 mutex_unlock(&card
->mutex
);
1727 mutex_unlock(&client_mutex
);
1732 /* probes a new socdev */
1733 static int soc_probe(struct platform_device
*pdev
)
1735 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1738 * no card, so machine driver should be registering card
1739 * we should not be here in that case so ret error
1744 dev_warn(&pdev
->dev
,
1745 "ASoC: machine %s should use snd_soc_register_card()\n",
1748 /* Bodge while we unpick instantiation */
1749 card
->dev
= &pdev
->dev
;
1751 return snd_soc_register_card(card
);
1754 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1758 /* make sure any delayed work runs */
1759 for (i
= 0; i
< card
->num_rtd
; i
++) {
1760 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1761 flush_delayed_work(&rtd
->delayed_work
);
1764 /* remove auxiliary devices */
1765 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1766 soc_remove_aux_dev(card
, i
);
1768 /* remove and free each DAI */
1769 soc_remove_dai_links(card
);
1771 soc_cleanup_card_debugfs(card
);
1773 /* remove the card */
1777 snd_soc_dapm_free(&card
->dapm
);
1779 snd_card_free(card
->snd_card
);
1784 /* removes a socdev */
1785 static int soc_remove(struct platform_device
*pdev
)
1787 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1789 snd_soc_unregister_card(card
);
1793 int snd_soc_poweroff(struct device
*dev
)
1795 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1798 if (!card
->instantiated
)
1801 /* Flush out pmdown_time work - we actually do want to run it
1802 * now, we're shutting down so no imminent restart. */
1803 for (i
= 0; i
< card
->num_rtd
; i
++) {
1804 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1805 flush_delayed_work(&rtd
->delayed_work
);
1808 snd_soc_dapm_shutdown(card
);
1810 /* deactivate pins to sleep state */
1811 for (i
= 0; i
< card
->num_rtd
; i
++) {
1812 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1813 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1816 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
1817 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
1818 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
1819 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
1825 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1827 const struct dev_pm_ops snd_soc_pm_ops
= {
1828 .suspend
= snd_soc_suspend
,
1829 .resume
= snd_soc_resume
,
1830 .freeze
= snd_soc_suspend
,
1831 .thaw
= snd_soc_resume
,
1832 .poweroff
= snd_soc_poweroff
,
1833 .restore
= snd_soc_resume
,
1835 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1837 /* ASoC platform driver */
1838 static struct platform_driver soc_driver
= {
1840 .name
= "soc-audio",
1841 .pm
= &snd_soc_pm_ops
,
1844 .remove
= soc_remove
,
1848 * snd_soc_cnew - create new control
1849 * @_template: control template
1850 * @data: control private data
1851 * @long_name: control long name
1852 * @prefix: control name prefix
1854 * Create a new mixer control from a template control.
1856 * Returns 0 for success, else error.
1858 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1859 void *data
, const char *long_name
,
1862 struct snd_kcontrol_new
template;
1863 struct snd_kcontrol
*kcontrol
;
1866 memcpy(&template, _template
, sizeof(template));
1870 long_name
= template.name
;
1873 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
1877 template.name
= name
;
1879 template.name
= long_name
;
1882 kcontrol
= snd_ctl_new1(&template, data
);
1888 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1890 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
1891 const struct snd_kcontrol_new
*controls
, int num_controls
,
1892 const char *prefix
, void *data
)
1896 for (i
= 0; i
< num_controls
; i
++) {
1897 const struct snd_kcontrol_new
*control
= &controls
[i
];
1898 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
1899 control
->name
, prefix
));
1901 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
1902 control
->name
, err
);
1910 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
1913 struct snd_card
*card
= soc_card
->snd_card
;
1914 struct snd_kcontrol
*kctl
;
1916 if (unlikely(!name
))
1919 list_for_each_entry(kctl
, &card
->controls
, list
)
1920 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
1924 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
1927 * snd_soc_add_component_controls - Add an array of controls to a component.
1929 * @component: Component to add controls to
1930 * @controls: Array of controls to add
1931 * @num_controls: Number of elements in the array
1933 * Return: 0 for success, else error.
1935 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
1936 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1938 struct snd_card
*card
= component
->card
->snd_card
;
1940 return snd_soc_add_controls(card
, component
->dev
, controls
,
1941 num_controls
, component
->name_prefix
, component
);
1943 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
1946 * snd_soc_add_codec_controls - add an array of controls to a codec.
1947 * Convenience function to add a list of controls. Many codecs were
1948 * duplicating this code.
1950 * @codec: codec to add controls to
1951 * @controls: array of controls to add
1952 * @num_controls: number of elements in the array
1954 * Return 0 for success, else error.
1956 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
1957 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1959 return snd_soc_add_component_controls(&codec
->component
, controls
,
1962 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
1965 * snd_soc_add_platform_controls - add an array of controls to a platform.
1966 * Convenience function to add a list of controls.
1968 * @platform: platform to add controls to
1969 * @controls: array of controls to add
1970 * @num_controls: number of elements in the array
1972 * Return 0 for success, else error.
1974 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
1975 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1977 return snd_soc_add_component_controls(&platform
->component
, controls
,
1980 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
1983 * snd_soc_add_card_controls - add an array of controls to a SoC card.
1984 * Convenience function to add a list of controls.
1986 * @soc_card: SoC card to add controls to
1987 * @controls: array of controls to add
1988 * @num_controls: number of elements in the array
1990 * Return 0 for success, else error.
1992 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
1993 const struct snd_kcontrol_new
*controls
, int num_controls
)
1995 struct snd_card
*card
= soc_card
->snd_card
;
1997 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2000 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2003 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2004 * Convienience function to add a list of controls.
2006 * @dai: DAI to add controls to
2007 * @controls: array of controls to add
2008 * @num_controls: number of elements in the array
2010 * Return 0 for success, else error.
2012 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2013 const struct snd_kcontrol_new
*controls
, int num_controls
)
2015 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2017 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2020 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2023 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2025 * @clk_id: DAI specific clock ID
2026 * @freq: new clock frequency in Hz
2027 * @dir: new clock direction - input/output.
2029 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2031 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2032 unsigned int freq
, int dir
)
2034 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2035 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2036 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2037 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2042 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2045 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2047 * @clk_id: DAI specific clock ID
2048 * @source: Source for the clock
2049 * @freq: new clock frequency in Hz
2050 * @dir: new clock direction - input/output.
2052 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2054 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2055 int source
, unsigned int freq
, int dir
)
2057 if (codec
->driver
->set_sysclk
)
2058 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2063 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2066 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2068 * @div_id: DAI specific clock divider ID
2069 * @div: new clock divisor.
2071 * Configures the clock dividers. This is used to derive the best DAI bit and
2072 * frame clocks from the system or master clock. It's best to set the DAI bit
2073 * and frame clocks as low as possible to save system power.
2075 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2076 int div_id
, int div
)
2078 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2079 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2083 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2086 * snd_soc_dai_set_pll - configure DAI PLL.
2088 * @pll_id: DAI specific PLL ID
2089 * @source: DAI specific source for the PLL
2090 * @freq_in: PLL input clock frequency in Hz
2091 * @freq_out: requested PLL output clock frequency in Hz
2093 * Configures and enables PLL to generate output clock based on input clock.
2095 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2096 unsigned int freq_in
, unsigned int freq_out
)
2098 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2099 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2101 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2102 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2107 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2110 * snd_soc_codec_set_pll - configure codec PLL.
2112 * @pll_id: DAI specific PLL ID
2113 * @source: DAI specific source for the PLL
2114 * @freq_in: PLL input clock frequency in Hz
2115 * @freq_out: requested PLL output clock frequency in Hz
2117 * Configures and enables PLL to generate output clock based on input clock.
2119 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2120 unsigned int freq_in
, unsigned int freq_out
)
2122 if (codec
->driver
->set_pll
)
2123 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2128 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2131 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2133 * @ratio Ratio of BCLK to Sample rate.
2135 * Configures the DAI for a preset BCLK to sample rate ratio.
2137 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2139 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2140 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2144 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2147 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2149 * @fmt: SND_SOC_DAIFMT_ format value.
2151 * Configures the DAI hardware format and clocking.
2153 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2155 if (dai
->driver
== NULL
)
2157 if (dai
->driver
->ops
->set_fmt
== NULL
)
2159 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2161 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2164 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2165 * @slots: Number of slots in use.
2166 * @tx_mask: bitmask representing active TX slots.
2167 * @rx_mask: bitmask representing active RX slots.
2169 * Generates the TDM tx and rx slot default masks for DAI.
2171 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2172 unsigned int *tx_mask
,
2173 unsigned int *rx_mask
)
2175 if (*tx_mask
|| *rx_mask
)
2181 *tx_mask
= (1 << slots
) - 1;
2182 *rx_mask
= (1 << slots
) - 1;
2188 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2189 * @dai: The DAI to configure
2190 * @tx_mask: bitmask representing active TX slots.
2191 * @rx_mask: bitmask representing active RX slots.
2192 * @slots: Number of slots in use.
2193 * @slot_width: Width in bits for each slot.
2195 * This function configures the specified DAI for TDM operation. @slot contains
2196 * the total number of slots of the TDM stream and @slot_with the width of each
2197 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2198 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2199 * DAI should write to or read from. If a bit is set the corresponding slot is
2200 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2201 * the first slot, bit 1 to the second slot and so on. The first active slot
2202 * maps to the first channel of the DAI, the second active slot to the second
2203 * channel and so on.
2205 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2206 * @rx_mask and @slot_width will be ignored.
2208 * Returns 0 on success, a negative error code otherwise.
2210 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2211 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2213 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2214 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2215 &tx_mask
, &rx_mask
);
2217 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2219 dai
->tx_mask
= tx_mask
;
2220 dai
->rx_mask
= rx_mask
;
2222 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2223 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2228 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2231 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2233 * @tx_num: how many TX channels
2234 * @tx_slot: pointer to an array which imply the TX slot number channel
2236 * @rx_num: how many RX channels
2237 * @rx_slot: pointer to an array which imply the RX slot number channel
2240 * configure the relationship between channel number and TDM slot number.
2242 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2243 unsigned int tx_num
, unsigned int *tx_slot
,
2244 unsigned int rx_num
, unsigned int *rx_slot
)
2246 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2247 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2252 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2255 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2257 * @tristate: tristate enable
2259 * Tristates the DAI so that others can use it.
2261 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2263 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2264 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2268 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2271 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2273 * @mute: mute enable
2274 * @direction: stream to mute
2276 * Mutes the DAI DAC.
2278 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2284 if (dai
->driver
->ops
->mute_stream
)
2285 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2286 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2287 dai
->driver
->ops
->digital_mute
)
2288 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2292 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2294 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
2295 struct snd_soc_dai_link
*dai_link
)
2297 /* Legacy codec/codec_dai link is a single entry in multicodec */
2298 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
2299 dai_link
->codec_dai_name
) {
2300 dai_link
->num_codecs
= 1;
2302 dai_link
->codecs
= devm_kzalloc(card
->dev
,
2303 sizeof(struct snd_soc_dai_link_component
),
2305 if (!dai_link
->codecs
)
2308 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
2309 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
2310 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
2313 if (!dai_link
->codecs
) {
2314 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
2322 * snd_soc_register_card - Register a card with the ASoC core
2324 * @card: Card to register
2327 int snd_soc_register_card(struct snd_soc_card
*card
)
2331 if (!card
->name
|| !card
->dev
)
2334 for (i
= 0; i
< card
->num_links
; i
++) {
2335 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2337 ret
= snd_soc_init_multicodec(card
, link
);
2339 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
2343 for (j
= 0; j
< link
->num_codecs
; j
++) {
2345 * Codec must be specified by 1 of name or OF node,
2346 * not both or neither.
2348 if (!!link
->codecs
[j
].name
==
2349 !!link
->codecs
[j
].of_node
) {
2350 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
2354 /* Codec DAI name must be specified */
2355 if (!link
->codecs
[j
].dai_name
) {
2356 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
2363 * Platform may be specified by either name or OF node, but
2364 * can be left unspecified, and a dummy platform will be used.
2366 if (link
->platform_name
&& link
->platform_of_node
) {
2368 "ASoC: Both platform name/of_node are set for %s\n",
2374 * CPU device may be specified by either name or OF node, but
2375 * can be left unspecified, and will be matched based on DAI
2378 if (link
->cpu_name
&& link
->cpu_of_node
) {
2380 "ASoC: Neither/both cpu name/of_node are set for %s\n",
2385 * At least one of CPU DAI name or CPU device name/node must be
2388 if (!link
->cpu_dai_name
&&
2389 !(link
->cpu_name
|| link
->cpu_of_node
)) {
2391 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
2397 dev_set_drvdata(card
->dev
, card
);
2399 snd_soc_initialize_card_lists(card
);
2401 card
->rtd
= devm_kzalloc(card
->dev
,
2402 sizeof(struct snd_soc_pcm_runtime
) *
2403 (card
->num_links
+ card
->num_aux_devs
),
2405 if (card
->rtd
== NULL
)
2408 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2410 for (i
= 0; i
< card
->num_links
; i
++) {
2411 card
->rtd
[i
].card
= card
;
2412 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2413 card
->rtd
[i
].codec_dais
= devm_kzalloc(card
->dev
,
2414 sizeof(struct snd_soc_dai
*) *
2415 (card
->rtd
[i
].dai_link
->num_codecs
),
2417 if (card
->rtd
[i
].codec_dais
== NULL
)
2421 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2422 card
->rtd_aux
[i
].card
= card
;
2424 INIT_LIST_HEAD(&card
->dapm_dirty
);
2425 card
->instantiated
= 0;
2426 mutex_init(&card
->mutex
);
2427 mutex_init(&card
->dapm_mutex
);
2429 ret
= snd_soc_instantiate_card(card
);
2433 /* deactivate pins to sleep state */
2434 for (i
= 0; i
< card
->num_rtd
; i
++) {
2435 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2436 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2439 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2440 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2441 if (!codec_dai
->active
)
2442 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2445 if (!cpu_dai
->active
)
2446 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2451 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2454 * snd_soc_unregister_card - Unregister a card with the ASoC core
2456 * @card: Card to unregister
2459 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2461 if (card
->instantiated
) {
2462 card
->instantiated
= false;
2463 snd_soc_dapm_shutdown(card
);
2464 soc_cleanup_card_resources(card
);
2465 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2470 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2473 * Simplify DAI link configuration by removing ".-1" from device names
2474 * and sanitizing names.
2476 static char *fmt_single_name(struct device
*dev
, int *id
)
2478 char *found
, name
[NAME_SIZE
];
2481 if (dev_name(dev
) == NULL
)
2484 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2486 /* are we a "%s.%d" name (platform and SPI components) */
2487 found
= strstr(name
, dev
->driver
->name
);
2490 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2492 /* discard ID from name if ID == -1 */
2494 found
[strlen(dev
->driver
->name
)] = '\0';
2498 /* I2C component devices are named "bus-addr" */
2499 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2500 char tmp
[NAME_SIZE
];
2502 /* create unique ID number from I2C addr and bus */
2503 *id
= ((id1
& 0xffff) << 16) + id2
;
2505 /* sanitize component name for DAI link creation */
2506 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2507 strlcpy(name
, tmp
, NAME_SIZE
);
2512 return kstrdup(name
, GFP_KERNEL
);
2516 * Simplify DAI link naming for single devices with multiple DAIs by removing
2517 * any ".-1" and using the DAI name (instead of device name).
2519 static inline char *fmt_multiple_name(struct device
*dev
,
2520 struct snd_soc_dai_driver
*dai_drv
)
2522 if (dai_drv
->name
== NULL
) {
2524 "ASoC: error - multiple DAI %s registered with no name\n",
2529 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2533 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2535 * @component: The component for which the DAIs should be unregistered
2537 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
2539 struct snd_soc_dai
*dai
, *_dai
;
2541 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
2542 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
2544 list_del(&dai
->list
);
2551 * snd_soc_register_dais - Register a DAI with the ASoC core
2553 * @component: The component the DAIs are registered for
2554 * @dai_drv: DAI driver to use for the DAIs
2555 * @count: Number of DAIs
2556 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2559 static int snd_soc_register_dais(struct snd_soc_component
*component
,
2560 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
2561 bool legacy_dai_naming
)
2563 struct device
*dev
= component
->dev
;
2564 struct snd_soc_dai
*dai
;
2568 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
2570 component
->dai_drv
= dai_drv
;
2571 component
->num_dai
= count
;
2573 for (i
= 0; i
< count
; i
++) {
2575 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2582 * Back in the old days when we still had component-less DAIs,
2583 * instead of having a static name, component-less DAIs would
2584 * inherit the name of the parent device so it is possible to
2585 * register multiple instances of the DAI. We still need to keep
2586 * the same naming style even though those DAIs are not
2587 * component-less anymore.
2589 if (count
== 1 && legacy_dai_naming
) {
2590 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2592 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
2594 dai
->id
= dai_drv
[i
].id
;
2598 if (dai
->name
== NULL
) {
2604 dai
->component
= component
;
2606 dai
->driver
= &dai_drv
[i
];
2607 if (!dai
->driver
->ops
)
2608 dai
->driver
->ops
= &null_dai_ops
;
2610 list_add(&dai
->list
, &component
->dai_list
);
2612 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
2618 snd_soc_unregister_dais(component
);
2623 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
2624 enum snd_soc_dapm_type type
, int subseq
)
2626 struct snd_soc_component
*component
= dapm
->component
;
2628 component
->driver
->seq_notifier(component
, type
, subseq
);
2631 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
2634 struct snd_soc_component
*component
= dapm
->component
;
2636 return component
->driver
->stream_event(component
, event
);
2639 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
2640 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
2642 struct snd_soc_dapm_context
*dapm
;
2644 component
->name
= fmt_single_name(dev
, &component
->id
);
2645 if (!component
->name
) {
2646 dev_err(dev
, "ASoC: Failed to allocate name\n");
2650 component
->dev
= dev
;
2651 component
->driver
= driver
;
2652 component
->probe
= component
->driver
->probe
;
2653 component
->remove
= component
->driver
->remove
;
2655 if (!component
->dapm_ptr
)
2656 component
->dapm_ptr
= &component
->dapm
;
2658 dapm
= component
->dapm_ptr
;
2660 dapm
->component
= component
;
2661 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
2662 dapm
->idle_bias_off
= true;
2663 if (driver
->seq_notifier
)
2664 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
2665 if (driver
->stream_event
)
2666 dapm
->stream_event
= snd_soc_component_stream_event
;
2668 component
->controls
= driver
->controls
;
2669 component
->num_controls
= driver
->num_controls
;
2670 component
->dapm_widgets
= driver
->dapm_widgets
;
2671 component
->num_dapm_widgets
= driver
->num_dapm_widgets
;
2672 component
->dapm_routes
= driver
->dapm_routes
;
2673 component
->num_dapm_routes
= driver
->num_dapm_routes
;
2675 INIT_LIST_HEAD(&component
->dai_list
);
2676 mutex_init(&component
->io_mutex
);
2681 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
2683 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
2685 /* Errors are legitimate for non-integer byte multiples */
2687 component
->val_bytes
= val_bytes
;
2690 #ifdef CONFIG_REGMAP
2693 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2694 * @component: The component for which to initialize the regmap instance
2695 * @regmap: The regmap instance that should be used by the component
2697 * This function allows deferred assignment of the regmap instance that is
2698 * associated with the component. Only use this if the regmap instance is not
2699 * yet ready when the component is registered. The function must also be called
2700 * before the first IO attempt of the component.
2702 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
2703 struct regmap
*regmap
)
2705 component
->regmap
= regmap
;
2706 snd_soc_component_setup_regmap(component
);
2708 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
2711 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2712 * @component: The component for which to de-initialize the regmap instance
2714 * Calls regmap_exit() on the regmap instance associated to the component and
2715 * removes the regmap instance from the component.
2717 * This function should only be used if snd_soc_component_init_regmap() was used
2718 * to initialize the regmap instance.
2720 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
2722 regmap_exit(component
->regmap
);
2723 component
->regmap
= NULL
;
2725 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
2729 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
2731 if (!component
->write
&& !component
->read
) {
2732 if (!component
->regmap
)
2733 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
2734 if (component
->regmap
)
2735 snd_soc_component_setup_regmap(component
);
2738 list_add(&component
->list
, &component_list
);
2741 static void snd_soc_component_add(struct snd_soc_component
*component
)
2743 mutex_lock(&client_mutex
);
2744 snd_soc_component_add_unlocked(component
);
2745 mutex_unlock(&client_mutex
);
2748 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
2750 snd_soc_unregister_dais(component
);
2751 kfree(component
->name
);
2754 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
2756 list_del(&component
->list
);
2759 int snd_soc_register_component(struct device
*dev
,
2760 const struct snd_soc_component_driver
*cmpnt_drv
,
2761 struct snd_soc_dai_driver
*dai_drv
,
2764 struct snd_soc_component
*cmpnt
;
2767 cmpnt
= kzalloc(sizeof(*cmpnt
), GFP_KERNEL
);
2769 dev_err(dev
, "ASoC: Failed to allocate memory\n");
2773 ret
= snd_soc_component_initialize(cmpnt
, cmpnt_drv
, dev
);
2777 cmpnt
->ignore_pmdown_time
= true;
2778 cmpnt
->registered_as_component
= true;
2780 ret
= snd_soc_register_dais(cmpnt
, dai_drv
, num_dai
, true);
2782 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
2786 snd_soc_component_add(cmpnt
);
2791 snd_soc_component_cleanup(cmpnt
);
2796 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
2799 * snd_soc_unregister_component - Unregister a component from the ASoC core
2802 void snd_soc_unregister_component(struct device
*dev
)
2804 struct snd_soc_component
*cmpnt
;
2806 mutex_lock(&client_mutex
);
2807 list_for_each_entry(cmpnt
, &component_list
, list
) {
2808 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
2811 mutex_unlock(&client_mutex
);
2815 snd_soc_component_del_unlocked(cmpnt
);
2816 mutex_unlock(&client_mutex
);
2817 snd_soc_component_cleanup(cmpnt
);
2820 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
2822 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
2824 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2826 return platform
->driver
->probe(platform
);
2829 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
2831 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2833 platform
->driver
->remove(platform
);
2837 * snd_soc_add_platform - Add a platform to the ASoC core
2838 * @dev: The parent device for the platform
2839 * @platform: The platform to add
2840 * @platform_driver: The driver for the platform
2842 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
2843 const struct snd_soc_platform_driver
*platform_drv
)
2847 ret
= snd_soc_component_initialize(&platform
->component
,
2848 &platform_drv
->component_driver
, dev
);
2852 platform
->dev
= dev
;
2853 platform
->driver
= platform_drv
;
2855 if (platform_drv
->probe
)
2856 platform
->component
.probe
= snd_soc_platform_drv_probe
;
2857 if (platform_drv
->remove
)
2858 platform
->component
.remove
= snd_soc_platform_drv_remove
;
2860 #ifdef CONFIG_DEBUG_FS
2861 platform
->component
.debugfs_prefix
= "platform";
2864 mutex_lock(&client_mutex
);
2865 snd_soc_component_add_unlocked(&platform
->component
);
2866 list_add(&platform
->list
, &platform_list
);
2867 mutex_unlock(&client_mutex
);
2869 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
2870 platform
->component
.name
);
2874 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
2877 * snd_soc_register_platform - Register a platform with the ASoC core
2879 * @platform: platform to register
2881 int snd_soc_register_platform(struct device
*dev
,
2882 const struct snd_soc_platform_driver
*platform_drv
)
2884 struct snd_soc_platform
*platform
;
2887 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
2889 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
2890 if (platform
== NULL
)
2893 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
2899 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
2902 * snd_soc_remove_platform - Remove a platform from the ASoC core
2903 * @platform: the platform to remove
2905 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
2908 mutex_lock(&client_mutex
);
2909 list_del(&platform
->list
);
2910 snd_soc_component_del_unlocked(&platform
->component
);
2911 mutex_unlock(&client_mutex
);
2913 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
2914 platform
->component
.name
);
2916 snd_soc_component_cleanup(&platform
->component
);
2918 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
2920 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
2922 struct snd_soc_platform
*platform
;
2924 mutex_lock(&client_mutex
);
2925 list_for_each_entry(platform
, &platform_list
, list
) {
2926 if (dev
== platform
->dev
) {
2927 mutex_unlock(&client_mutex
);
2931 mutex_unlock(&client_mutex
);
2935 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
2938 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
2940 * @platform: platform to unregister
2942 void snd_soc_unregister_platform(struct device
*dev
)
2944 struct snd_soc_platform
*platform
;
2946 platform
= snd_soc_lookup_platform(dev
);
2950 snd_soc_remove_platform(platform
);
2953 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
2955 static u64 codec_format_map
[] = {
2956 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
2957 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
2958 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
2959 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
2960 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
2961 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
2962 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2963 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2964 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
2965 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
2966 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
2967 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
2968 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
2969 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
2970 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
2971 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
2974 /* Fix up the DAI formats for endianness: codecs don't actually see
2975 * the endianness of the data but we're using the CPU format
2976 * definitions which do need to include endianness so we ensure that
2977 * codec DAIs always have both big and little endian variants set.
2979 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
2983 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
2984 if (stream
->formats
& codec_format_map
[i
])
2985 stream
->formats
|= codec_format_map
[i
];
2988 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
2990 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2992 return codec
->driver
->probe(codec
);
2995 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
2997 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2999 codec
->driver
->remove(codec
);
3002 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3003 unsigned int reg
, unsigned int val
)
3005 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3007 return codec
->driver
->write(codec
, reg
, val
);
3010 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3011 unsigned int reg
, unsigned int *val
)
3013 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3015 *val
= codec
->driver
->read(codec
, reg
);
3020 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3021 enum snd_soc_bias_level level
)
3023 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3025 return codec
->driver
->set_bias_level(codec
, level
);
3029 * snd_soc_register_codec - Register a codec with the ASoC core
3031 * @codec: codec to register
3033 int snd_soc_register_codec(struct device
*dev
,
3034 const struct snd_soc_codec_driver
*codec_drv
,
3035 struct snd_soc_dai_driver
*dai_drv
,
3038 struct snd_soc_codec
*codec
;
3039 struct snd_soc_dai
*dai
;
3042 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3044 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3048 codec
->component
.dapm_ptr
= &codec
->dapm
;
3049 codec
->component
.codec
= codec
;
3051 ret
= snd_soc_component_initialize(&codec
->component
,
3052 &codec_drv
->component_driver
, dev
);
3056 if (codec_drv
->controls
) {
3057 codec
->component
.controls
= codec_drv
->controls
;
3058 codec
->component
.num_controls
= codec_drv
->num_controls
;
3060 if (codec_drv
->dapm_widgets
) {
3061 codec
->component
.dapm_widgets
= codec_drv
->dapm_widgets
;
3062 codec
->component
.num_dapm_widgets
= codec_drv
->num_dapm_widgets
;
3064 if (codec_drv
->dapm_routes
) {
3065 codec
->component
.dapm_routes
= codec_drv
->dapm_routes
;
3066 codec
->component
.num_dapm_routes
= codec_drv
->num_dapm_routes
;
3069 if (codec_drv
->probe
)
3070 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3071 if (codec_drv
->remove
)
3072 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3073 if (codec_drv
->write
)
3074 codec
->component
.write
= snd_soc_codec_drv_write
;
3075 if (codec_drv
->read
)
3076 codec
->component
.read
= snd_soc_codec_drv_read
;
3077 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3078 codec
->dapm
.idle_bias_off
= codec_drv
->idle_bias_off
;
3079 codec
->dapm
.suspend_bias_off
= codec_drv
->suspend_bias_off
;
3080 if (codec_drv
->seq_notifier
)
3081 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3082 if (codec_drv
->set_bias_level
)
3083 codec
->dapm
.set_bias_level
= snd_soc_codec_set_bias_level
;
3085 codec
->driver
= codec_drv
;
3086 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3088 #ifdef CONFIG_DEBUG_FS
3089 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3090 codec
->component
.debugfs_prefix
= "codec";
3093 if (codec_drv
->get_regmap
)
3094 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3096 for (i
= 0; i
< num_dai
; i
++) {
3097 fixup_codec_formats(&dai_drv
[i
].playback
);
3098 fixup_codec_formats(&dai_drv
[i
].capture
);
3101 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3103 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3107 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3110 mutex_lock(&client_mutex
);
3111 snd_soc_component_add_unlocked(&codec
->component
);
3112 list_add(&codec
->list
, &codec_list
);
3113 mutex_unlock(&client_mutex
);
3115 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3116 codec
->component
.name
);
3120 snd_soc_component_cleanup(&codec
->component
);
3125 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3128 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3130 * @codec: codec to unregister
3132 void snd_soc_unregister_codec(struct device
*dev
)
3134 struct snd_soc_codec
*codec
;
3136 mutex_lock(&client_mutex
);
3137 list_for_each_entry(codec
, &codec_list
, list
) {
3138 if (dev
== codec
->dev
)
3141 mutex_unlock(&client_mutex
);
3145 list_del(&codec
->list
);
3146 snd_soc_component_del_unlocked(&codec
->component
);
3147 mutex_unlock(&client_mutex
);
3149 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3150 codec
->component
.name
);
3152 snd_soc_component_cleanup(&codec
->component
);
3153 snd_soc_cache_exit(codec
);
3156 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3158 /* Retrieve a card's name from device tree */
3159 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3160 const char *propname
)
3162 struct device_node
*np
;
3166 pr_err("card->dev is not set before calling %s\n", __func__
);
3170 np
= card
->dev
->of_node
;
3172 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3174 * EINVAL means the property does not exist. This is fine providing
3175 * card->name was previously set, which is checked later in
3176 * snd_soc_register_card.
3178 if (ret
< 0 && ret
!= -EINVAL
) {
3180 "ASoC: Property '%s' could not be read: %d\n",
3187 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3189 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3190 SND_SOC_DAPM_MIC("Microphone", NULL
),
3191 SND_SOC_DAPM_LINE("Line", NULL
),
3192 SND_SOC_DAPM_HP("Headphone", NULL
),
3193 SND_SOC_DAPM_SPK("Speaker", NULL
),
3196 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3197 const char *propname
)
3199 struct device_node
*np
= card
->dev
->of_node
;
3200 struct snd_soc_dapm_widget
*widgets
;
3201 const char *template, *wname
;
3202 int i
, j
, num_widgets
, ret
;
3204 num_widgets
= of_property_count_strings(np
, propname
);
3205 if (num_widgets
< 0) {
3207 "ASoC: Property '%s' does not exist\n", propname
);
3210 if (num_widgets
& 1) {
3212 "ASoC: Property '%s' length is not even\n", propname
);
3218 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3223 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3227 "ASoC: Could not allocate memory for widgets\n");
3231 for (i
= 0; i
< num_widgets
; i
++) {
3232 ret
= of_property_read_string_index(np
, propname
,
3236 "ASoC: Property '%s' index %d read error:%d\n",
3237 propname
, 2 * i
, ret
);
3241 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3242 if (!strncmp(template, simple_widgets
[j
].name
,
3243 strlen(simple_widgets
[j
].name
))) {
3244 widgets
[i
] = simple_widgets
[j
];
3249 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3251 "ASoC: DAPM widget '%s' is not supported\n",
3256 ret
= of_property_read_string_index(np
, propname
,
3261 "ASoC: Property '%s' index %d read error:%d\n",
3262 propname
, (2 * i
) + 1, ret
);
3266 widgets
[i
].name
= wname
;
3269 card
->of_dapm_widgets
= widgets
;
3270 card
->num_of_dapm_widgets
= num_widgets
;
3274 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3276 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3277 unsigned int *slots
,
3278 unsigned int *slot_width
)
3283 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3284 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3292 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3293 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
3303 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
3305 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3306 const char *propname
)
3308 struct device_node
*np
= card
->dev
->of_node
;
3310 struct snd_soc_dapm_route
*routes
;
3313 num_routes
= of_property_count_strings(np
, propname
);
3314 if (num_routes
< 0 || num_routes
& 1) {
3316 "ASoC: Property '%s' does not exist or its length is not even\n",
3322 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3327 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3331 "ASoC: Could not allocate DAPM route table\n");
3335 for (i
= 0; i
< num_routes
; i
++) {
3336 ret
= of_property_read_string_index(np
, propname
,
3337 2 * i
, &routes
[i
].sink
);
3340 "ASoC: Property '%s' index %d could not be read: %d\n",
3341 propname
, 2 * i
, ret
);
3344 ret
= of_property_read_string_index(np
, propname
,
3345 (2 * i
) + 1, &routes
[i
].source
);
3348 "ASoC: Property '%s' index %d could not be read: %d\n",
3349 propname
, (2 * i
) + 1, ret
);
3354 card
->num_of_dapm_routes
= num_routes
;
3355 card
->of_dapm_routes
= routes
;
3359 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3361 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
3363 struct device_node
**bitclkmaster
,
3364 struct device_node
**framemaster
)
3368 unsigned int format
= 0;
3374 } of_fmt_table
[] = {
3375 { "i2s", SND_SOC_DAIFMT_I2S
},
3376 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
3377 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
3378 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
3379 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
3380 { "ac97", SND_SOC_DAIFMT_AC97
},
3381 { "pdm", SND_SOC_DAIFMT_PDM
},
3382 { "msb", SND_SOC_DAIFMT_MSB
},
3383 { "lsb", SND_SOC_DAIFMT_LSB
},
3390 * check "[prefix]format = xxx"
3391 * SND_SOC_DAIFMT_FORMAT_MASK area
3393 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
3394 ret
= of_property_read_string(np
, prop
, &str
);
3396 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
3397 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
3398 format
|= of_fmt_table
[i
].val
;
3405 * check "[prefix]continuous-clock"
3406 * SND_SOC_DAIFMT_CLOCK_MASK area
3408 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
3409 if (of_get_property(np
, prop
, NULL
))
3410 format
|= SND_SOC_DAIFMT_CONT
;
3412 format
|= SND_SOC_DAIFMT_GATED
;
3415 * check "[prefix]bitclock-inversion"
3416 * check "[prefix]frame-inversion"
3417 * SND_SOC_DAIFMT_INV_MASK area
3419 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
3420 bit
= !!of_get_property(np
, prop
, NULL
);
3422 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
3423 frame
= !!of_get_property(np
, prop
, NULL
);
3425 switch ((bit
<< 4) + frame
) {
3427 format
|= SND_SOC_DAIFMT_IB_IF
;
3430 format
|= SND_SOC_DAIFMT_IB_NF
;
3433 format
|= SND_SOC_DAIFMT_NB_IF
;
3436 /* SND_SOC_DAIFMT_NB_NF is default */
3441 * check "[prefix]bitclock-master"
3442 * check "[prefix]frame-master"
3443 * SND_SOC_DAIFMT_MASTER_MASK area
3445 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
3446 bit
= !!of_get_property(np
, prop
, NULL
);
3447 if (bit
&& bitclkmaster
)
3448 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
3450 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
3451 frame
= !!of_get_property(np
, prop
, NULL
);
3452 if (frame
&& framemaster
)
3453 *framemaster
= of_parse_phandle(np
, prop
, 0);
3455 switch ((bit
<< 4) + frame
) {
3457 format
|= SND_SOC_DAIFMT_CBM_CFM
;
3460 format
|= SND_SOC_DAIFMT_CBM_CFS
;
3463 format
|= SND_SOC_DAIFMT_CBS_CFM
;
3466 format
|= SND_SOC_DAIFMT_CBS_CFS
;
3472 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
3474 static int snd_soc_get_dai_name(struct of_phandle_args
*args
,
3475 const char **dai_name
)
3477 struct snd_soc_component
*pos
;
3478 int ret
= -EPROBE_DEFER
;
3480 mutex_lock(&client_mutex
);
3481 list_for_each_entry(pos
, &component_list
, list
) {
3482 if (pos
->dev
->of_node
!= args
->np
)
3485 if (pos
->driver
->of_xlate_dai_name
) {
3486 ret
= pos
->driver
->of_xlate_dai_name(pos
,
3492 switch (args
->args_count
) {
3494 id
= 0; /* same as dai_drv[0] */
3504 if (id
< 0 || id
>= pos
->num_dai
) {
3511 *dai_name
= pos
->dai_drv
[id
].name
;
3513 *dai_name
= pos
->name
;
3518 mutex_unlock(&client_mutex
);
3522 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
3523 const char **dai_name
)
3525 struct of_phandle_args args
;
3528 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
3529 "#sound-dai-cells", 0, &args
);
3533 ret
= snd_soc_get_dai_name(&args
, dai_name
);
3535 of_node_put(args
.np
);
3539 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
3542 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3544 * @of_node: Device node
3545 * @dai_link: DAI link
3547 * Builds an array of CODEC DAI components from the DAI link property
3549 * The array is set in the DAI link and the number of DAIs is set accordingly.
3550 * The device nodes in the array (of_node) must be dereferenced by the caller.
3552 * Returns 0 for success
3554 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
3555 struct device_node
*of_node
,
3556 struct snd_soc_dai_link
*dai_link
)
3558 struct of_phandle_args args
;
3559 struct snd_soc_dai_link_component
*component
;
3561 int index
, num_codecs
, ret
;
3563 /* Count the number of CODECs */
3565 num_codecs
= of_count_phandle_with_args(of_node
, name
,
3566 "#sound-dai-cells");
3567 if (num_codecs
<= 0) {
3568 if (num_codecs
== -ENOENT
)
3569 dev_err(dev
, "No 'sound-dai' property\n");
3571 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
3574 component
= devm_kzalloc(dev
,
3575 sizeof *component
* num_codecs
,
3579 dai_link
->codecs
= component
;
3580 dai_link
->num_codecs
= num_codecs
;
3582 /* Parse the list */
3583 for (index
= 0, component
= dai_link
->codecs
;
3584 index
< dai_link
->num_codecs
;
3585 index
++, component
++) {
3586 ret
= of_parse_phandle_with_args(of_node
, name
,
3591 component
->of_node
= args
.np
;
3592 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
3598 for (index
= 0, component
= dai_link
->codecs
;
3599 index
< dai_link
->num_codecs
;
3600 index
++, component
++) {
3601 if (!component
->of_node
)
3603 of_node_put(component
->of_node
);
3604 component
->of_node
= NULL
;
3606 dai_link
->codecs
= NULL
;
3607 dai_link
->num_codecs
= 0;
3610 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
3612 static int __init
snd_soc_init(void)
3614 snd_soc_debugfs_init();
3615 snd_soc_util_init();
3617 return platform_driver_register(&soc_driver
);
3619 module_init(snd_soc_init
);
3621 static void __exit
snd_soc_exit(void)
3623 snd_soc_util_exit();
3624 snd_soc_debugfs_exit();
3626 #ifdef CONFIG_DEBUG_FS
3628 platform_driver_unregister(&soc_driver
);
3630 module_exit(snd_soc_exit
);
3632 /* Module information */
3633 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3634 MODULE_DESCRIPTION("ALSA SoC Core");
3635 MODULE_LICENSE("GPL");
3636 MODULE_ALIAS("platform:soc-audio");