2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/of_graph.h>
38 #include <linux/dmi.h>
39 #include <sound/core.h>
40 #include <sound/jack.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/soc-dpcm.h>
45 #include <sound/soc-topology.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry
*snd_soc_debugfs_root
;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
58 static DEFINE_MUTEX(client_mutex
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
61 static LIST_HEAD(component_list
);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time
= 5000;
69 module_param(pmdown_time
, int, 0);
70 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
72 /* If a DMI filed contain strings in this blacklist (e.g.
73 * "Type2 - Board Manufacturer" or "Type1 - TBD by OEM"), it will be taken
74 * as invalid and dropped when setting the card long name from DMI info.
76 static const char * const dmi_blacklist
[] = {
77 "To be filled by OEM",
83 NULL
, /* terminator */
86 /* returns the minimum number of bytes needed to represent
87 * a particular given value */
88 static int min_bytes_needed(unsigned long val
)
93 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
96 c
= (sizeof val
* 8) - c
;
104 /* fill buf which is 'len' bytes with a formatted
105 * string of the form 'reg: value\n' */
106 static int format_register_str(struct snd_soc_codec
*codec
,
107 unsigned int reg
, char *buf
, size_t len
)
109 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
110 int regsize
= codec
->driver
->reg_word_size
* 2;
113 /* +2 for ': ' and + 1 for '\n' */
114 if (wordsize
+ regsize
+ 2 + 1 != len
)
117 sprintf(buf
, "%.*x: ", wordsize
, reg
);
120 ret
= snd_soc_read(codec
, reg
);
122 memset(buf
, 'X', regsize
);
124 sprintf(buf
, "%.*x", regsize
, ret
);
126 /* no NUL-termination needed */
130 /* codec register dump */
131 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
132 size_t count
, loff_t pos
)
135 int wordsize
, regsize
;
140 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
141 regsize
= codec
->driver
->reg_word_size
* 2;
143 len
= wordsize
+ regsize
+ 2 + 1;
145 if (!codec
->driver
->reg_cache_size
)
148 if (codec
->driver
->reg_cache_step
)
149 step
= codec
->driver
->reg_cache_step
;
151 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total
+ len
>= count
- 1)
157 format_register_str(codec
, i
, buf
+ total
, len
);
163 total
= min(total
, count
- 1);
168 static ssize_t
codec_reg_show(struct device
*dev
,
169 struct device_attribute
*attr
, char *buf
)
171 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
173 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
176 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
178 static ssize_t
pmdown_time_show(struct device
*dev
,
179 struct device_attribute
*attr
, char *buf
)
181 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
183 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
186 static ssize_t
pmdown_time_set(struct device
*dev
,
187 struct device_attribute
*attr
,
188 const char *buf
, size_t count
)
190 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
193 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
200 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
202 static struct attribute
*soc_dev_attrs
[] = {
203 &dev_attr_codec_reg
.attr
,
204 &dev_attr_pmdown_time
.attr
,
208 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
209 struct attribute
*attr
, int idx
)
211 struct device
*dev
= kobj_to_dev(kobj
);
212 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
214 if (attr
== &dev_attr_pmdown_time
.attr
)
215 return attr
->mode
; /* always visible */
216 return rtd
->codec
? attr
->mode
: 0; /* enabled only with codec */
219 static const struct attribute_group soc_dapm_dev_group
= {
220 .attrs
= soc_dapm_dev_attrs
,
221 .is_visible
= soc_dev_attr_is_visible
,
224 static const struct attribute_group soc_dev_roup
= {
225 .attrs
= soc_dev_attrs
,
226 .is_visible
= soc_dev_attr_is_visible
,
229 static const struct attribute_group
*soc_dev_attr_groups
[] = {
235 #ifdef CONFIG_DEBUG_FS
236 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
237 size_t count
, loff_t
*ppos
)
240 struct snd_soc_codec
*codec
= file
->private_data
;
243 if (*ppos
< 0 || !count
)
246 buf
= kmalloc(count
, GFP_KERNEL
);
250 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
252 if (copy_to_user(user_buf
, buf
, ret
)) {
263 static ssize_t
codec_reg_write_file(struct file
*file
,
264 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
269 unsigned long reg
, value
;
270 struct snd_soc_codec
*codec
= file
->private_data
;
273 buf_size
= min(count
, (sizeof(buf
)-1));
274 if (copy_from_user(buf
, user_buf
, buf_size
))
278 while (*start
== ' ')
280 reg
= simple_strtoul(start
, &start
, 16);
281 while (*start
== ' ')
283 ret
= kstrtoul(start
, 16, &value
);
287 /* Userspace has been fiddling around behind the kernel's back */
288 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
290 snd_soc_write(codec
, reg
, value
);
294 static const struct file_operations codec_reg_fops
= {
296 .read
= codec_reg_read_file
,
297 .write
= codec_reg_write_file
,
298 .llseek
= default_llseek
,
301 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
303 if (!component
->card
->debugfs_card_root
)
306 if (component
->debugfs_prefix
) {
309 name
= kasprintf(GFP_KERNEL
, "%s:%s",
310 component
->debugfs_prefix
, component
->name
);
312 component
->debugfs_root
= debugfs_create_dir(name
,
313 component
->card
->debugfs_card_root
);
317 component
->debugfs_root
= debugfs_create_dir(component
->name
,
318 component
->card
->debugfs_card_root
);
321 if (!component
->debugfs_root
) {
322 dev_warn(component
->dev
,
323 "ASoC: Failed to create component debugfs directory\n");
327 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
328 component
->debugfs_root
);
330 if (component
->init_debugfs
)
331 component
->init_debugfs(component
);
334 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
336 debugfs_remove_recursive(component
->debugfs_root
);
339 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
341 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
342 struct dentry
*debugfs_reg
;
344 debugfs_reg
= debugfs_create_file("codec_reg", 0644,
345 codec
->component
.debugfs_root
,
346 codec
, &codec_reg_fops
);
349 "ASoC: Failed to create codec register debugfs file\n");
352 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
353 size_t count
, loff_t
*ppos
)
355 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
356 ssize_t len
, ret
= 0;
357 struct snd_soc_codec
*codec
;
362 mutex_lock(&client_mutex
);
364 list_for_each_entry(codec
, &codec_list
, list
) {
365 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
366 codec
->component
.name
);
369 if (ret
> PAGE_SIZE
) {
375 mutex_unlock(&client_mutex
);
378 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
385 static const struct file_operations codec_list_fops
= {
386 .read
= codec_list_read_file
,
387 .llseek
= default_llseek
,/* read accesses f_pos */
390 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
391 size_t count
, loff_t
*ppos
)
393 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
394 ssize_t len
, ret
= 0;
395 struct snd_soc_component
*component
;
396 struct snd_soc_dai
*dai
;
401 mutex_lock(&client_mutex
);
403 list_for_each_entry(component
, &component_list
, list
) {
404 list_for_each_entry(dai
, &component
->dai_list
, list
) {
405 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
409 if (ret
> PAGE_SIZE
) {
416 mutex_unlock(&client_mutex
);
418 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
425 static const struct file_operations dai_list_fops
= {
426 .read
= dai_list_read_file
,
427 .llseek
= default_llseek
,/* read accesses f_pos */
430 static ssize_t
platform_list_read_file(struct file
*file
,
431 char __user
*user_buf
,
432 size_t count
, loff_t
*ppos
)
434 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
435 ssize_t len
, ret
= 0;
436 struct snd_soc_platform
*platform
;
441 mutex_lock(&client_mutex
);
443 list_for_each_entry(platform
, &platform_list
, list
) {
444 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
445 platform
->component
.name
);
448 if (ret
> PAGE_SIZE
) {
454 mutex_unlock(&client_mutex
);
456 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
463 static const struct file_operations platform_list_fops
= {
464 .read
= platform_list_read_file
,
465 .llseek
= default_llseek
,/* read accesses f_pos */
468 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
470 if (!snd_soc_debugfs_root
)
473 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
474 snd_soc_debugfs_root
);
475 if (!card
->debugfs_card_root
) {
477 "ASoC: Failed to create card debugfs directory\n");
481 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
482 card
->debugfs_card_root
,
484 if (!card
->debugfs_pop_time
)
486 "ASoC: Failed to create pop time debugfs file\n");
489 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
491 debugfs_remove_recursive(card
->debugfs_card_root
);
495 static void snd_soc_debugfs_init(void)
497 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
498 if (IS_ERR_OR_NULL(snd_soc_debugfs_root
)) {
499 pr_warn("ASoC: Failed to create debugfs directory\n");
500 snd_soc_debugfs_root
= NULL
;
504 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
506 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
508 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
510 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
512 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
513 &platform_list_fops
))
514 pr_warn("ASoC: Failed to create platform list debugfs file\n");
517 static void snd_soc_debugfs_exit(void)
519 debugfs_remove_recursive(snd_soc_debugfs_root
);
524 #define soc_init_codec_debugfs NULL
526 static inline void soc_init_component_debugfs(
527 struct snd_soc_component
*component
)
531 static inline void soc_cleanup_component_debugfs(
532 struct snd_soc_component
*component
)
536 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
540 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
544 static inline void snd_soc_debugfs_init(void)
548 static inline void snd_soc_debugfs_exit(void)
554 static int snd_soc_rtdcom_add(struct snd_soc_pcm_runtime
*rtd
,
555 struct snd_soc_component
*component
)
557 struct snd_soc_rtdcom_list
*rtdcom
;
558 struct snd_soc_rtdcom_list
*new_rtdcom
;
560 for_each_rtdcom(rtd
, rtdcom
) {
561 /* already connected */
562 if (rtdcom
->component
== component
)
566 new_rtdcom
= kmalloc(sizeof(*new_rtdcom
), GFP_KERNEL
);
570 new_rtdcom
->component
= component
;
571 INIT_LIST_HEAD(&new_rtdcom
->list
);
573 list_add_tail(&new_rtdcom
->list
, &rtd
->component_list
);
578 static void snd_soc_rtdcom_del_all(struct snd_soc_pcm_runtime
*rtd
)
580 struct snd_soc_rtdcom_list
*rtdcom1
, *rtdcom2
;
582 for_each_rtdcom_safe(rtd
, rtdcom1
, rtdcom2
)
585 INIT_LIST_HEAD(&rtd
->component_list
);
588 struct snd_soc_component
*snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime
*rtd
,
589 const char *driver_name
)
591 struct snd_soc_rtdcom_list
*rtdcom
;
593 for_each_rtdcom(rtd
, rtdcom
) {
594 if ((rtdcom
->component
->driver
->name
== driver_name
) ||
595 strcmp(rtdcom
->component
->driver
->name
, driver_name
) == 0)
596 return rtdcom
->component
;
602 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
603 const char *dai_link
, int stream
)
605 struct snd_soc_pcm_runtime
*rtd
;
607 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
608 if (rtd
->dai_link
->no_pcm
&&
609 !strcmp(rtd
->dai_link
->name
, dai_link
))
610 return rtd
->pcm
->streams
[stream
].substream
;
612 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
615 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
617 static struct snd_soc_pcm_runtime
*soc_new_pcm_runtime(
618 struct snd_soc_card
*card
, struct snd_soc_dai_link
*dai_link
)
620 struct snd_soc_pcm_runtime
*rtd
;
622 rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
), GFP_KERNEL
);
626 INIT_LIST_HEAD(&rtd
->component_list
);
628 rtd
->dai_link
= dai_link
;
629 rtd
->codec_dais
= kzalloc(sizeof(struct snd_soc_dai
*) *
630 dai_link
->num_codecs
,
632 if (!rtd
->codec_dais
) {
640 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime
*rtd
)
642 if (rtd
&& rtd
->codec_dais
)
643 kfree(rtd
->codec_dais
);
644 snd_soc_rtdcom_del_all(rtd
);
648 static void soc_add_pcm_runtime(struct snd_soc_card
*card
,
649 struct snd_soc_pcm_runtime
*rtd
)
651 list_add_tail(&rtd
->list
, &card
->rtd_list
);
652 rtd
->num
= card
->num_rtd
;
656 static void soc_remove_pcm_runtimes(struct snd_soc_card
*card
)
658 struct snd_soc_pcm_runtime
*rtd
, *_rtd
;
660 list_for_each_entry_safe(rtd
, _rtd
, &card
->rtd_list
, list
) {
661 list_del(&rtd
->list
);
662 soc_free_pcm_runtime(rtd
);
668 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
669 const char *dai_link
)
671 struct snd_soc_pcm_runtime
*rtd
;
673 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
674 if (!strcmp(rtd
->dai_link
->name
, dai_link
))
677 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
680 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
682 static void codec2codec_close_delayed_work(struct work_struct
*work
)
684 /* Currently nothing to do for c2c links
685 * Since c2c links are internal nodes in the DAPM graph and
686 * don't interface with the outside world or application layer
687 * we don't have to do any special handling on close.
691 #ifdef CONFIG_PM_SLEEP
692 /* powers down audio subsystem for suspend */
693 int snd_soc_suspend(struct device
*dev
)
695 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
696 struct snd_soc_component
*component
;
697 struct snd_soc_pcm_runtime
*rtd
;
700 /* If the card is not initialized yet there is nothing to do */
701 if (!card
->instantiated
)
704 /* Due to the resume being scheduled into a workqueue we could
705 * suspend before that's finished - wait for it to complete.
707 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
709 /* we're going to block userspace touching us until resume completes */
710 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
712 /* mute any active DACs */
713 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
715 if (rtd
->dai_link
->ignore_suspend
)
718 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
719 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
720 struct snd_soc_dai_driver
*drv
= dai
->driver
;
722 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
723 drv
->ops
->digital_mute(dai
, 1);
727 /* suspend all pcms */
728 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
729 if (rtd
->dai_link
->ignore_suspend
)
732 snd_pcm_suspend_all(rtd
->pcm
);
735 if (card
->suspend_pre
)
736 card
->suspend_pre(card
);
738 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
739 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
741 if (rtd
->dai_link
->ignore_suspend
)
744 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
745 cpu_dai
->driver
->suspend(cpu_dai
);
748 /* close any waiting streams */
749 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
750 flush_delayed_work(&rtd
->delayed_work
);
752 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
754 if (rtd
->dai_link
->ignore_suspend
)
757 snd_soc_dapm_stream_event(rtd
,
758 SNDRV_PCM_STREAM_PLAYBACK
,
759 SND_SOC_DAPM_STREAM_SUSPEND
);
761 snd_soc_dapm_stream_event(rtd
,
762 SNDRV_PCM_STREAM_CAPTURE
,
763 SND_SOC_DAPM_STREAM_SUSPEND
);
766 /* Recheck all endpoints too, their state is affected by suspend */
767 dapm_mark_endpoints_dirty(card
);
768 snd_soc_dapm_sync(&card
->dapm
);
770 /* suspend all COMPONENTs */
771 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
772 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
774 /* If there are paths active then the COMPONENT will be held with
775 * bias _ON and should not be suspended. */
776 if (!component
->suspended
) {
777 switch (snd_soc_dapm_get_bias_level(dapm
)) {
778 case SND_SOC_BIAS_STANDBY
:
780 * If the COMPONENT is capable of idle
781 * bias off then being in STANDBY
782 * means it's doing something,
783 * otherwise fall through.
785 if (dapm
->idle_bias_off
) {
786 dev_dbg(component
->dev
,
787 "ASoC: idle_bias_off CODEC on over suspend\n");
791 case SND_SOC_BIAS_OFF
:
792 if (component
->suspend
)
793 component
->suspend(component
);
794 component
->suspended
= 1;
795 if (component
->regmap
)
796 regcache_mark_dirty(component
->regmap
);
797 /* deactivate pins to sleep state */
798 pinctrl_pm_select_sleep_state(component
->dev
);
801 dev_dbg(component
->dev
,
802 "ASoC: COMPONENT is on over suspend\n");
808 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
809 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
811 if (rtd
->dai_link
->ignore_suspend
)
814 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
815 cpu_dai
->driver
->suspend(cpu_dai
);
817 /* deactivate pins to sleep state */
818 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
821 if (card
->suspend_post
)
822 card
->suspend_post(card
);
826 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
828 /* deferred resume work, so resume can complete before we finished
829 * setting our codec back up, which can be very slow on I2C
831 static void soc_resume_deferred(struct work_struct
*work
)
833 struct snd_soc_card
*card
=
834 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
835 struct snd_soc_pcm_runtime
*rtd
;
836 struct snd_soc_component
*component
;
839 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
840 * so userspace apps are blocked from touching us
843 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
845 /* Bring us up into D2 so that DAPM starts enabling things */
846 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
848 if (card
->resume_pre
)
849 card
->resume_pre(card
);
851 /* resume control bus DAIs */
852 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
853 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
855 if (rtd
->dai_link
->ignore_suspend
)
858 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
859 cpu_dai
->driver
->resume(cpu_dai
);
862 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
863 if (component
->suspended
) {
864 if (component
->resume
)
865 component
->resume(component
);
866 component
->suspended
= 0;
870 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
872 if (rtd
->dai_link
->ignore_suspend
)
875 snd_soc_dapm_stream_event(rtd
,
876 SNDRV_PCM_STREAM_PLAYBACK
,
877 SND_SOC_DAPM_STREAM_RESUME
);
879 snd_soc_dapm_stream_event(rtd
,
880 SNDRV_PCM_STREAM_CAPTURE
,
881 SND_SOC_DAPM_STREAM_RESUME
);
884 /* unmute any active DACs */
885 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
887 if (rtd
->dai_link
->ignore_suspend
)
890 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
891 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
892 struct snd_soc_dai_driver
*drv
= dai
->driver
;
894 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
895 drv
->ops
->digital_mute(dai
, 0);
899 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
900 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
902 if (rtd
->dai_link
->ignore_suspend
)
905 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
906 cpu_dai
->driver
->resume(cpu_dai
);
909 if (card
->resume_post
)
910 card
->resume_post(card
);
912 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
914 /* Recheck all endpoints too, their state is affected by suspend */
915 dapm_mark_endpoints_dirty(card
);
916 snd_soc_dapm_sync(&card
->dapm
);
918 /* userspace can access us now we are back as we were before */
919 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
922 /* powers up audio subsystem after a suspend */
923 int snd_soc_resume(struct device
*dev
)
925 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
926 bool bus_control
= false;
927 struct snd_soc_pcm_runtime
*rtd
;
929 /* If the card is not initialized yet there is nothing to do */
930 if (!card
->instantiated
)
933 /* activate pins from sleep state */
934 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
935 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
936 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
940 pinctrl_pm_select_default_state(cpu_dai
->dev
);
942 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
943 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
944 if (codec_dai
->active
)
945 pinctrl_pm_select_default_state(codec_dai
->dev
);
950 * DAIs that also act as the control bus master might have other drivers
951 * hanging off them so need to resume immediately. Other drivers don't
952 * have that problem and may take a substantial amount of time to resume
953 * due to I/O costs and anti-pop so handle them out of line.
955 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
956 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
957 bus_control
|= cpu_dai
->driver
->bus_control
;
960 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
961 soc_resume_deferred(&card
->deferred_resume_work
);
963 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
964 if (!schedule_work(&card
->deferred_resume_work
))
965 dev_err(dev
, "ASoC: resume work item may be lost\n");
970 EXPORT_SYMBOL_GPL(snd_soc_resume
);
972 #define snd_soc_suspend NULL
973 #define snd_soc_resume NULL
976 static const struct snd_soc_dai_ops null_dai_ops
= {
979 static struct snd_soc_component
*soc_find_component(
980 const struct device_node
*of_node
, const char *name
)
982 struct snd_soc_component
*component
;
984 lockdep_assert_held(&client_mutex
);
986 list_for_each_entry(component
, &component_list
, list
) {
988 if (component
->dev
->of_node
== of_node
)
990 } else if (strcmp(component
->name
, name
) == 0) {
999 * snd_soc_find_dai - Find a registered DAI
1001 * @dlc: name of the DAI or the DAI driver and optional component info to match
1003 * This function will search all registered components and their DAIs to
1004 * find the DAI of the same name. The component's of_node and name
1005 * should also match if being specified.
1007 * Return: pointer of DAI, or NULL if not found.
1009 struct snd_soc_dai
*snd_soc_find_dai(
1010 const struct snd_soc_dai_link_component
*dlc
)
1012 struct snd_soc_component
*component
;
1013 struct snd_soc_dai
*dai
;
1014 struct device_node
*component_of_node
;
1016 lockdep_assert_held(&client_mutex
);
1018 /* Find CPU DAI from registered DAIs*/
1019 list_for_each_entry(component
, &component_list
, list
) {
1020 component_of_node
= component
->dev
->of_node
;
1021 if (!component_of_node
&& component
->dev
->parent
)
1022 component_of_node
= component
->dev
->parent
->of_node
;
1024 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
1026 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
1028 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1029 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
)
1030 && (!dai
->driver
->name
1031 || strcmp(dai
->driver
->name
, dlc
->dai_name
)))
1040 EXPORT_SYMBOL_GPL(snd_soc_find_dai
);
1044 * snd_soc_find_dai_link - Find a DAI link
1047 * @id: DAI link ID to match
1048 * @name: DAI link name to match, optional
1049 * @stream_name: DAI link stream name to match, optional
1051 * This function will search all existing DAI links of the soc card to
1052 * find the link of the same ID. Since DAI links may not have their
1053 * unique ID, so name and stream name should also match if being
1056 * Return: pointer of DAI link, or NULL if not found.
1058 struct snd_soc_dai_link
*snd_soc_find_dai_link(struct snd_soc_card
*card
,
1059 int id
, const char *name
,
1060 const char *stream_name
)
1062 struct snd_soc_dai_link
*link
, *_link
;
1064 lockdep_assert_held(&client_mutex
);
1066 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1070 if (name
&& (!link
->name
|| strcmp(name
, link
->name
)))
1073 if (stream_name
&& (!link
->stream_name
1074 || strcmp(stream_name
, link
->stream_name
)))
1082 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link
);
1084 static bool soc_is_dai_link_bound(struct snd_soc_card
*card
,
1085 struct snd_soc_dai_link
*dai_link
)
1087 struct snd_soc_pcm_runtime
*rtd
;
1089 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
1090 if (rtd
->dai_link
== dai_link
)
1097 static int soc_bind_dai_link(struct snd_soc_card
*card
,
1098 struct snd_soc_dai_link
*dai_link
)
1100 struct snd_soc_pcm_runtime
*rtd
;
1101 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
1102 struct snd_soc_dai_link_component cpu_dai_component
;
1103 struct snd_soc_component
*component
;
1104 struct snd_soc_dai
**codec_dais
;
1105 struct snd_soc_platform
*platform
;
1106 struct device_node
*platform_of_node
;
1107 const char *platform_name
;
1110 dev_dbg(card
->dev
, "ASoC: binding %s\n", dai_link
->name
);
1112 if (soc_is_dai_link_bound(card
, dai_link
)) {
1113 dev_dbg(card
->dev
, "ASoC: dai link %s already bound\n",
1118 rtd
= soc_new_pcm_runtime(card
, dai_link
);
1122 cpu_dai_component
.name
= dai_link
->cpu_name
;
1123 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
1124 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
1125 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
1126 if (!rtd
->cpu_dai
) {
1127 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
1128 dai_link
->cpu_dai_name
);
1131 snd_soc_rtdcom_add(rtd
, rtd
->cpu_dai
->component
);
1133 rtd
->num_codecs
= dai_link
->num_codecs
;
1135 /* Find CODEC from registered CODECs */
1136 codec_dais
= rtd
->codec_dais
;
1137 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1138 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
1139 if (!codec_dais
[i
]) {
1140 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
1141 codecs
[i
].dai_name
);
1144 snd_soc_rtdcom_add(rtd
, codec_dais
[i
]->component
);
1147 /* Single codec links expect codec and codec_dai in runtime data */
1148 rtd
->codec_dai
= codec_dais
[0];
1149 rtd
->codec
= rtd
->codec_dai
->codec
;
1151 /* if there's no platform we match on the empty platform */
1152 platform_name
= dai_link
->platform_name
;
1153 if (!platform_name
&& !dai_link
->platform_of_node
)
1154 platform_name
= "snd-soc-dummy";
1156 /* find one from the set of registered platforms */
1157 list_for_each_entry(component
, &component_list
, list
) {
1158 platform_of_node
= component
->dev
->of_node
;
1159 if (!platform_of_node
&& component
->dev
->parent
->of_node
)
1160 platform_of_node
= component
->dev
->parent
->of_node
;
1162 if (dai_link
->platform_of_node
) {
1163 if (platform_of_node
!= dai_link
->platform_of_node
)
1166 if (strcmp(component
->name
, platform_name
))
1170 snd_soc_rtdcom_add(rtd
, component
);
1173 /* find one from the set of registered platforms */
1174 list_for_each_entry(platform
, &platform_list
, list
) {
1175 platform_of_node
= platform
->dev
->of_node
;
1176 if (!platform_of_node
&& platform
->dev
->parent
->of_node
)
1177 platform_of_node
= platform
->dev
->parent
->of_node
;
1179 if (dai_link
->platform_of_node
) {
1180 if (platform_of_node
!= dai_link
->platform_of_node
)
1183 if (strcmp(platform
->component
.name
, platform_name
))
1187 rtd
->platform
= platform
;
1189 if (!rtd
->platform
) {
1190 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
1191 dai_link
->platform_name
);
1195 soc_add_pcm_runtime(card
, rtd
);
1199 soc_free_pcm_runtime(rtd
);
1200 return -EPROBE_DEFER
;
1203 static void soc_remove_component(struct snd_soc_component
*component
)
1205 if (!component
->card
)
1208 list_del(&component
->card_list
);
1210 if (component
->remove
)
1211 component
->remove(component
);
1213 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1215 soc_cleanup_component_debugfs(component
);
1216 component
->card
= NULL
;
1217 module_put(component
->dev
->driver
->owner
);
1220 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1224 if (dai
&& dai
->probed
&&
1225 dai
->driver
->remove_order
== order
) {
1226 if (dai
->driver
->remove
) {
1227 err
= dai
->driver
->remove(dai
);
1230 "ASoC: failed to remove %s: %d\n",
1237 static void soc_remove_link_dais(struct snd_soc_card
*card
,
1238 struct snd_soc_pcm_runtime
*rtd
, int order
)
1242 /* unregister the rtd device */
1243 if (rtd
->dev_registered
) {
1244 device_unregister(rtd
->dev
);
1245 rtd
->dev_registered
= 0;
1248 /* remove the CODEC DAI */
1249 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1250 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1252 soc_remove_dai(rtd
->cpu_dai
, order
);
1255 static void soc_remove_link_components(struct snd_soc_card
*card
,
1256 struct snd_soc_pcm_runtime
*rtd
, int order
)
1258 struct snd_soc_component
*component
;
1259 struct snd_soc_rtdcom_list
*rtdcom
;
1261 for_each_rtdcom(rtd
, rtdcom
) {
1262 component
= rtdcom
->component
;
1264 if (component
->driver
->remove_order
== order
)
1265 soc_remove_component(component
);
1269 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1272 struct snd_soc_pcm_runtime
*rtd
;
1273 struct snd_soc_dai_link
*link
, *_link
;
1275 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1277 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1278 soc_remove_link_dais(card
, rtd
, order
);
1281 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1283 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1284 soc_remove_link_components(card
, rtd
, order
);
1287 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1288 if (link
->dobj
.type
== SND_SOC_DOBJ_DAI_LINK
)
1289 dev_warn(card
->dev
, "Topology forgot to remove link %s?\n",
1292 list_del(&link
->list
);
1293 card
->num_dai_links
--;
1297 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
1298 struct snd_soc_dai_link
*dai_link
)
1300 /* Legacy codec/codec_dai link is a single entry in multicodec */
1301 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
1302 dai_link
->codec_dai_name
) {
1303 dai_link
->num_codecs
= 1;
1305 dai_link
->codecs
= devm_kzalloc(card
->dev
,
1306 sizeof(struct snd_soc_dai_link_component
),
1308 if (!dai_link
->codecs
)
1311 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
1312 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
1313 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
1316 if (!dai_link
->codecs
) {
1317 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
1324 static int soc_init_dai_link(struct snd_soc_card
*card
,
1325 struct snd_soc_dai_link
*link
)
1329 ret
= snd_soc_init_multicodec(card
, link
);
1331 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
1335 for (i
= 0; i
< link
->num_codecs
; i
++) {
1337 * Codec must be specified by 1 of name or OF node,
1338 * not both or neither.
1340 if (!!link
->codecs
[i
].name
==
1341 !!link
->codecs
[i
].of_node
) {
1342 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
1346 /* Codec DAI name must be specified */
1347 if (!link
->codecs
[i
].dai_name
) {
1348 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
1355 * Platform may be specified by either name or OF node, but
1356 * can be left unspecified, and a dummy platform will be used.
1358 if (link
->platform_name
&& link
->platform_of_node
) {
1360 "ASoC: Both platform name/of_node are set for %s\n",
1366 * CPU device may be specified by either name or OF node, but
1367 * can be left unspecified, and will be matched based on DAI
1370 if (link
->cpu_name
&& link
->cpu_of_node
) {
1372 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1377 * At least one of CPU DAI name or CPU device name/node must be
1380 if (!link
->cpu_dai_name
&&
1381 !(link
->cpu_name
|| link
->cpu_of_node
)) {
1383 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1392 * snd_soc_add_dai_link - Add a DAI link dynamically
1393 * @card: The ASoC card to which the DAI link is added
1394 * @dai_link: The new DAI link to add
1396 * This function adds a DAI link to the ASoC card's link list.
1398 * Note: Topology can use this API to add DAI links when probing the
1399 * topology component. And machine drivers can still define static
1400 * DAI links in dai_link array.
1402 int snd_soc_add_dai_link(struct snd_soc_card
*card
,
1403 struct snd_soc_dai_link
*dai_link
)
1405 if (dai_link
->dobj
.type
1406 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1407 dev_err(card
->dev
, "Invalid dai link type %d\n",
1408 dai_link
->dobj
.type
);
1412 lockdep_assert_held(&client_mutex
);
1413 /* Notify the machine driver for extra initialization
1414 * on the link created by topology.
1416 if (dai_link
->dobj
.type
&& card
->add_dai_link
)
1417 card
->add_dai_link(card
, dai_link
);
1419 list_add_tail(&dai_link
->list
, &card
->dai_link_list
);
1420 card
->num_dai_links
++;
1424 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link
);
1427 * snd_soc_remove_dai_link - Remove a DAI link from the list
1428 * @card: The ASoC card that owns the link
1429 * @dai_link: The DAI link to remove
1431 * This function removes a DAI link from the ASoC card's link list.
1433 * For DAI links previously added by topology, topology should
1434 * remove them by using the dobj embedded in the link.
1436 void snd_soc_remove_dai_link(struct snd_soc_card
*card
,
1437 struct snd_soc_dai_link
*dai_link
)
1439 struct snd_soc_dai_link
*link
, *_link
;
1441 if (dai_link
->dobj
.type
1442 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1443 dev_err(card
->dev
, "Invalid dai link type %d\n",
1444 dai_link
->dobj
.type
);
1448 lockdep_assert_held(&client_mutex
);
1449 /* Notify the machine driver for extra destruction
1450 * on the link created by topology.
1452 if (dai_link
->dobj
.type
&& card
->remove_dai_link
)
1453 card
->remove_dai_link(card
, dai_link
);
1455 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1456 if (link
== dai_link
) {
1457 list_del(&link
->list
);
1458 card
->num_dai_links
--;
1463 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link
);
1465 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1466 struct snd_soc_component
*component
)
1470 if (card
->codec_conf
== NULL
)
1473 for (i
= 0; i
< card
->num_configs
; i
++) {
1474 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1475 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1477 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1479 component
->name_prefix
= map
->name_prefix
;
1484 static int soc_probe_component(struct snd_soc_card
*card
,
1485 struct snd_soc_component
*component
)
1487 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1488 struct snd_soc_dai
*dai
;
1491 if (!strcmp(component
->name
, "snd-soc-dummy"))
1494 if (component
->card
) {
1495 if (component
->card
!= card
) {
1496 dev_err(component
->dev
,
1497 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1498 card
->name
, component
->card
->name
);
1504 if (!try_module_get(component
->dev
->driver
->owner
))
1507 component
->card
= card
;
1509 soc_set_name_prefix(card
, component
);
1511 soc_init_component_debugfs(component
);
1513 if (component
->driver
->dapm_widgets
) {
1514 ret
= snd_soc_dapm_new_controls(dapm
,
1515 component
->driver
->dapm_widgets
,
1516 component
->driver
->num_dapm_widgets
);
1519 dev_err(component
->dev
,
1520 "Failed to create new controls %d\n", ret
);
1525 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1526 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1528 dev_err(component
->dev
,
1529 "Failed to create DAI widgets %d\n", ret
);
1534 if (component
->probe
) {
1535 ret
= component
->probe(component
);
1537 dev_err(component
->dev
,
1538 "ASoC: failed to probe component %d\n", ret
);
1542 WARN(dapm
->idle_bias_off
&&
1543 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1544 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1548 /* machine specific init */
1549 if (component
->init
) {
1550 ret
= component
->init(component
);
1552 dev_err(component
->dev
,
1553 "Failed to do machine specific init %d\n", ret
);
1558 if (component
->driver
->controls
)
1559 snd_soc_add_component_controls(component
,
1560 component
->driver
->controls
,
1561 component
->driver
->num_controls
);
1562 if (component
->driver
->dapm_routes
)
1563 snd_soc_dapm_add_routes(dapm
,
1564 component
->driver
->dapm_routes
,
1565 component
->driver
->num_dapm_routes
);
1567 list_add(&dapm
->list
, &card
->dapm_list
);
1568 list_add(&component
->card_list
, &card
->component_dev_list
);
1573 soc_cleanup_component_debugfs(component
);
1574 component
->card
= NULL
;
1575 module_put(component
->dev
->driver
->owner
);
1580 static void rtd_release(struct device
*dev
)
1585 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1590 /* register the rtd device */
1591 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1594 device_initialize(rtd
->dev
);
1595 rtd
->dev
->parent
= rtd
->card
->dev
;
1596 rtd
->dev
->release
= rtd_release
;
1597 rtd
->dev
->groups
= soc_dev_attr_groups
;
1598 dev_set_name(rtd
->dev
, "%s", name
);
1599 dev_set_drvdata(rtd
->dev
, rtd
);
1600 mutex_init(&rtd
->pcm_mutex
);
1601 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1602 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1603 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1604 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1605 ret
= device_add(rtd
->dev
);
1607 /* calling put_device() here to free the rtd->dev */
1608 put_device(rtd
->dev
);
1609 dev_err(rtd
->card
->dev
,
1610 "ASoC: failed to register runtime device: %d\n", ret
);
1613 rtd
->dev_registered
= 1;
1617 static int soc_probe_link_components(struct snd_soc_card
*card
,
1618 struct snd_soc_pcm_runtime
*rtd
,
1621 struct snd_soc_component
*component
;
1622 struct snd_soc_rtdcom_list
*rtdcom
;
1625 for_each_rtdcom(rtd
, rtdcom
) {
1626 component
= rtdcom
->component
;
1628 if (component
->driver
->probe_order
== order
) {
1629 ret
= soc_probe_component(card
, component
);
1638 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1642 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1643 if (dai
->driver
->probe
) {
1644 ret
= dai
->driver
->probe(dai
);
1647 "ASoC: failed to probe DAI %s: %d\n",
1659 static int soc_link_dai_pcm_new(struct snd_soc_dai
**dais
, int num_dais
,
1660 struct snd_soc_pcm_runtime
*rtd
)
1664 for (i
= 0; i
< num_dais
; ++i
) {
1665 struct snd_soc_dai_driver
*drv
= dais
[i
]->driver
;
1667 if (!rtd
->dai_link
->no_pcm
&& drv
->pcm_new
)
1668 ret
= drv
->pcm_new(rtd
, dais
[i
]);
1670 dev_err(dais
[i
]->dev
,
1671 "ASoC: Failed to bind %s with pcm device\n",
1680 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1681 struct snd_soc_dai_link
*dai_link
,
1682 struct snd_soc_pcm_runtime
*rtd
)
1684 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1685 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1686 struct snd_soc_dapm_widget
*sink
, *source
;
1689 if (rtd
->num_codecs
> 1)
1690 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1692 /* link the DAI widgets */
1693 sink
= codec_dai
->playback_widget
;
1694 source
= cpu_dai
->capture_widget
;
1695 if (sink
&& source
) {
1696 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1697 dai_link
->num_params
,
1700 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1701 sink
->name
, source
->name
, ret
);
1706 sink
= cpu_dai
->playback_widget
;
1707 source
= codec_dai
->capture_widget
;
1708 if (sink
&& source
) {
1709 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1710 dai_link
->num_params
,
1713 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1714 sink
->name
, source
->name
, ret
);
1722 static int soc_probe_link_dais(struct snd_soc_card
*card
,
1723 struct snd_soc_pcm_runtime
*rtd
, int order
)
1725 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
1726 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1729 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1730 card
->name
, rtd
->num
, order
);
1732 /* set default power off timeout */
1733 rtd
->pmdown_time
= pmdown_time
;
1735 ret
= soc_probe_dai(cpu_dai
, order
);
1739 /* probe the CODEC DAI */
1740 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1741 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1746 /* complete DAI probe during last probe */
1747 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1750 /* do machine specific initialization */
1751 if (dai_link
->init
) {
1752 ret
= dai_link
->init(rtd
);
1754 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1755 dai_link
->name
, ret
);
1760 if (dai_link
->dai_fmt
)
1761 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1763 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1767 #ifdef CONFIG_DEBUG_FS
1768 /* add DPCM sysfs entries */
1769 if (dai_link
->dynamic
)
1770 soc_dpcm_debugfs_add(rtd
);
1773 if (cpu_dai
->driver
->compress_new
) {
1774 /*create compress_device"*/
1775 ret
= cpu_dai
->driver
->compress_new(rtd
, rtd
->num
);
1777 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1778 dai_link
->stream_name
);
1783 if (!dai_link
->params
) {
1784 /* create the pcm */
1785 ret
= soc_new_pcm(rtd
, rtd
->num
);
1787 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1788 dai_link
->stream_name
, ret
);
1791 ret
= soc_link_dai_pcm_new(&cpu_dai
, 1, rtd
);
1794 ret
= soc_link_dai_pcm_new(rtd
->codec_dais
,
1795 rtd
->num_codecs
, rtd
);
1799 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1800 codec2codec_close_delayed_work
);
1802 /* link the DAI widgets */
1803 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1812 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1814 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1815 struct snd_soc_component
*component
;
1817 struct device_node
*codec_of_node
;
1819 if (aux_dev
->codec_of_node
|| aux_dev
->codec_name
) {
1820 /* codecs, usually analog devices */
1821 name
= aux_dev
->codec_name
;
1822 codec_of_node
= aux_dev
->codec_of_node
;
1823 component
= soc_find_component(codec_of_node
, name
);
1826 name
= of_node_full_name(codec_of_node
);
1829 } else if (aux_dev
->name
) {
1830 /* generic components */
1831 name
= aux_dev
->name
;
1832 component
= soc_find_component(NULL
, name
);
1836 dev_err(card
->dev
, "ASoC: Invalid auxiliary device\n");
1840 component
->init
= aux_dev
->init
;
1841 list_add(&component
->card_aux_list
, &card
->aux_comp_list
);
1846 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1847 return -EPROBE_DEFER
;
1850 static int soc_probe_aux_devices(struct snd_soc_card
*card
)
1852 struct snd_soc_component
*comp
;
1856 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1858 list_for_each_entry(comp
, &card
->aux_comp_list
, card_aux_list
) {
1859 if (comp
->driver
->probe_order
== order
) {
1860 ret
= soc_probe_component(card
, comp
);
1863 "ASoC: failed to probe aux component %s %d\n",
1874 static void soc_remove_aux_devices(struct snd_soc_card
*card
)
1876 struct snd_soc_component
*comp
, *_comp
;
1879 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1881 list_for_each_entry_safe(comp
, _comp
,
1882 &card
->aux_comp_list
, card_aux_list
) {
1884 if (comp
->driver
->remove_order
== order
) {
1885 soc_remove_component(comp
);
1886 /* remove it from the card's aux_comp_list */
1887 list_del(&comp
->card_aux_list
);
1893 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1897 if (codec
->cache_init
)
1900 ret
= snd_soc_cache_init(codec
);
1903 "ASoC: Failed to set cache compression type: %d\n",
1907 codec
->cache_init
= 1;
1912 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1913 * @rtd: The runtime for which the DAI link format should be changed
1914 * @dai_fmt: The new DAI link format
1916 * This function updates the DAI link format for all DAIs connected to the DAI
1917 * link for the specified runtime.
1919 * Note: For setups with a static format set the dai_fmt field in the
1920 * corresponding snd_dai_link struct instead of using this function.
1922 * Returns 0 on success, otherwise a negative error code.
1924 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1925 unsigned int dai_fmt
)
1927 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1928 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1932 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1933 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1935 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1936 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1937 dev_warn(codec_dai
->dev
,
1938 "ASoC: Failed to set DAI format: %d\n", ret
);
1943 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1944 if (cpu_dai
->codec
) {
1945 unsigned int inv_dai_fmt
;
1947 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1948 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1949 case SND_SOC_DAIFMT_CBM_CFM
:
1950 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1952 case SND_SOC_DAIFMT_CBM_CFS
:
1953 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1955 case SND_SOC_DAIFMT_CBS_CFM
:
1956 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1958 case SND_SOC_DAIFMT_CBS_CFS
:
1959 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1963 dai_fmt
= inv_dai_fmt
;
1966 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1967 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1968 dev_warn(cpu_dai
->dev
,
1969 "ASoC: Failed to set DAI format: %d\n", ret
);
1975 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1979 /* Trim special characters, and replace '-' with '_' since '-' is used to
1980 * separate different DMI fields in the card long name. Only number and
1981 * alphabet characters and a few separator characters are kept.
1983 static void cleanup_dmi_name(char *name
)
1987 for (i
= 0; name
[i
]; i
++) {
1988 if (isalnum(name
[i
]) || (name
[i
] == '.')
1989 || (name
[i
] == '_'))
1990 name
[j
++] = name
[i
];
1991 else if (name
[i
] == '-')
1998 /* Check if a DMI field is valid, i.e. not containing any string
1999 * in the black list.
2001 static int is_dmi_valid(const char *field
)
2005 while (dmi_blacklist
[i
]) {
2006 if (strstr(field
, dmi_blacklist
[i
]))
2015 * snd_soc_set_dmi_name() - Register DMI names to card
2016 * @card: The card to register DMI names
2017 * @flavour: The flavour "differentiator" for the card amongst its peers.
2019 * An Intel machine driver may be used by many different devices but are
2020 * difficult for userspace to differentiate, since machine drivers ususally
2021 * use their own name as the card short name and leave the card long name
2022 * blank. To differentiate such devices and fix bugs due to lack of
2023 * device-specific configurations, this function allows DMI info to be used
2024 * as the sound card long name, in the format of
2025 * "vendor-product-version-board"
2026 * (Character '-' is used to separate different DMI fields here).
2027 * This will help the user space to load the device-specific Use Case Manager
2028 * (UCM) configurations for the card.
2030 * Possible card long names may be:
2031 * DellInc.-XPS139343-01-0310JH
2032 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
2033 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
2035 * This function also supports flavoring the card longname to provide
2036 * the extra differentiation, like "vendor-product-version-board-flavor".
2038 * We only keep number and alphabet characters and a few separator characters
2039 * in the card long name since UCM in the user space uses the card long names
2040 * as card configuration directory names and AudoConf cannot support special
2041 * charactors like SPACE.
2043 * Returns 0 on success, otherwise a negative error code.
2045 int snd_soc_set_dmi_name(struct snd_soc_card
*card
, const char *flavour
)
2047 const char *vendor
, *product
, *product_version
, *board
;
2048 size_t longname_buf_size
= sizeof(card
->snd_card
->longname
);
2051 if (card
->long_name
)
2052 return 0; /* long name already set by driver or from DMI */
2054 /* make up dmi long name as: vendor.product.version.board */
2055 vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
2056 if (!vendor
|| !is_dmi_valid(vendor
)) {
2057 dev_warn(card
->dev
, "ASoC: no DMI vendor name!\n");
2062 snprintf(card
->dmi_longname
, sizeof(card
->snd_card
->longname
),
2064 cleanup_dmi_name(card
->dmi_longname
);
2066 product
= dmi_get_system_info(DMI_PRODUCT_NAME
);
2067 if (product
&& is_dmi_valid(product
)) {
2068 len
= strlen(card
->dmi_longname
);
2069 snprintf(card
->dmi_longname
+ len
,
2070 longname_buf_size
- len
,
2073 len
++; /* skip the separator "-" */
2074 if (len
< longname_buf_size
)
2075 cleanup_dmi_name(card
->dmi_longname
+ len
);
2077 /* some vendors like Lenovo may only put a self-explanatory
2078 * name in the product version field
2080 product_version
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
2081 if (product_version
&& is_dmi_valid(product_version
)) {
2082 len
= strlen(card
->dmi_longname
);
2083 snprintf(card
->dmi_longname
+ len
,
2084 longname_buf_size
- len
,
2085 "-%s", product_version
);
2088 if (len
< longname_buf_size
)
2089 cleanup_dmi_name(card
->dmi_longname
+ len
);
2093 board
= dmi_get_system_info(DMI_BOARD_NAME
);
2094 if (board
&& is_dmi_valid(board
)) {
2095 len
= strlen(card
->dmi_longname
);
2096 snprintf(card
->dmi_longname
+ len
,
2097 longname_buf_size
- len
,
2101 if (len
< longname_buf_size
)
2102 cleanup_dmi_name(card
->dmi_longname
+ len
);
2103 } else if (!product
) {
2104 /* fall back to using legacy name */
2105 dev_warn(card
->dev
, "ASoC: no DMI board/product name!\n");
2109 /* Add flavour to dmi long name */
2111 len
= strlen(card
->dmi_longname
);
2112 snprintf(card
->dmi_longname
+ len
,
2113 longname_buf_size
- len
,
2117 if (len
< longname_buf_size
)
2118 cleanup_dmi_name(card
->dmi_longname
+ len
);
2121 /* set the card long name */
2122 card
->long_name
= card
->dmi_longname
;
2126 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name
);
2127 #endif /* CONFIG_DMI */
2129 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
2131 struct snd_soc_codec
*codec
;
2132 struct snd_soc_pcm_runtime
*rtd
;
2133 struct snd_soc_dai_link
*dai_link
;
2136 mutex_lock(&client_mutex
);
2137 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
2140 for (i
= 0; i
< card
->num_links
; i
++) {
2141 ret
= soc_bind_dai_link(card
, &card
->dai_link
[i
]);
2146 /* bind aux_devs too */
2147 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
2148 ret
= soc_bind_aux_dev(card
, i
);
2153 /* add predefined DAI links to the list */
2154 for (i
= 0; i
< card
->num_links
; i
++)
2155 snd_soc_add_dai_link(card
, card
->dai_link
+i
);
2157 /* initialize the register cache for each available codec */
2158 list_for_each_entry(codec
, &codec_list
, list
) {
2159 if (codec
->cache_init
)
2161 ret
= snd_soc_init_codec_cache(codec
);
2166 /* card bind complete so register a sound card */
2167 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
2168 card
->owner
, 0, &card
->snd_card
);
2171 "ASoC: can't create sound card for card %s: %d\n",
2176 soc_init_card_debugfs(card
);
2178 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
2179 card
->dapm
.dev
= card
->dev
;
2180 card
->dapm
.card
= card
;
2181 list_add(&card
->dapm
.list
, &card
->dapm_list
);
2183 #ifdef CONFIG_DEBUG_FS
2184 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
2187 #ifdef CONFIG_PM_SLEEP
2188 /* deferred resume work */
2189 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
2192 if (card
->dapm_widgets
)
2193 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
2194 card
->num_dapm_widgets
);
2196 if (card
->of_dapm_widgets
)
2197 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
2198 card
->num_of_dapm_widgets
);
2200 /* initialise the sound card only once */
2202 ret
= card
->probe(card
);
2204 goto card_probe_error
;
2207 /* probe all components used by DAI links on this card */
2208 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2210 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2211 ret
= soc_probe_link_components(card
, rtd
, order
);
2214 "ASoC: failed to instantiate card %d\n",
2221 /* probe auxiliary components */
2222 ret
= soc_probe_aux_devices(card
);
2226 /* Find new DAI links added during probing components and bind them.
2227 * Components with topology may bring new DAIs and DAI links.
2229 list_for_each_entry(dai_link
, &card
->dai_link_list
, list
) {
2230 if (soc_is_dai_link_bound(card
, dai_link
))
2233 ret
= soc_init_dai_link(card
, dai_link
);
2236 ret
= soc_bind_dai_link(card
, dai_link
);
2241 /* probe all DAI links on this card */
2242 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2244 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2245 ret
= soc_probe_link_dais(card
, rtd
, order
);
2248 "ASoC: failed to instantiate card %d\n",
2255 snd_soc_dapm_link_dai_widgets(card
);
2256 snd_soc_dapm_connect_dai_link_widgets(card
);
2259 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
2261 if (card
->dapm_routes
)
2262 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
2263 card
->num_dapm_routes
);
2265 if (card
->of_dapm_routes
)
2266 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
2267 card
->num_of_dapm_routes
);
2269 /* try to set some sane longname if DMI is available */
2270 snd_soc_set_dmi_name(card
, NULL
);
2272 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
2274 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
2275 "%s", card
->long_name
? card
->long_name
: card
->name
);
2276 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
2277 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
2278 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
2279 switch (card
->snd_card
->driver
[i
]) {
2285 if (!isalnum(card
->snd_card
->driver
[i
]))
2286 card
->snd_card
->driver
[i
] = '_';
2291 if (card
->late_probe
) {
2292 ret
= card
->late_probe(card
);
2294 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
2296 goto probe_aux_dev_err
;
2300 snd_soc_dapm_new_widgets(card
);
2302 ret
= snd_card_register(card
->snd_card
);
2304 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
2306 goto probe_aux_dev_err
;
2309 card
->instantiated
= 1;
2310 dapm_mark_endpoints_dirty(card
);
2311 snd_soc_dapm_sync(&card
->dapm
);
2312 mutex_unlock(&card
->mutex
);
2313 mutex_unlock(&client_mutex
);
2318 soc_remove_aux_devices(card
);
2321 soc_remove_dai_links(card
);
2327 snd_soc_dapm_free(&card
->dapm
);
2328 soc_cleanup_card_debugfs(card
);
2329 snd_card_free(card
->snd_card
);
2332 soc_remove_pcm_runtimes(card
);
2333 mutex_unlock(&card
->mutex
);
2334 mutex_unlock(&client_mutex
);
2339 /* probes a new socdev */
2340 static int soc_probe(struct platform_device
*pdev
)
2342 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2345 * no card, so machine driver should be registering card
2346 * we should not be here in that case so ret error
2351 dev_warn(&pdev
->dev
,
2352 "ASoC: machine %s should use snd_soc_register_card()\n",
2355 /* Bodge while we unpick instantiation */
2356 card
->dev
= &pdev
->dev
;
2358 return snd_soc_register_card(card
);
2361 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2363 struct snd_soc_pcm_runtime
*rtd
;
2365 /* make sure any delayed work runs */
2366 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2367 flush_delayed_work(&rtd
->delayed_work
);
2369 /* free the ALSA card at first; this syncs with pending operations */
2370 snd_card_free(card
->snd_card
);
2372 /* remove and free each DAI */
2373 soc_remove_dai_links(card
);
2374 soc_remove_pcm_runtimes(card
);
2376 /* remove auxiliary devices */
2377 soc_remove_aux_devices(card
);
2379 snd_soc_dapm_free(&card
->dapm
);
2380 soc_cleanup_card_debugfs(card
);
2382 /* remove the card */
2389 /* removes a socdev */
2390 static int soc_remove(struct platform_device
*pdev
)
2392 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2394 snd_soc_unregister_card(card
);
2398 int snd_soc_poweroff(struct device
*dev
)
2400 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2401 struct snd_soc_pcm_runtime
*rtd
;
2403 if (!card
->instantiated
)
2406 /* Flush out pmdown_time work - we actually do want to run it
2407 * now, we're shutting down so no imminent restart. */
2408 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2409 flush_delayed_work(&rtd
->delayed_work
);
2411 snd_soc_dapm_shutdown(card
);
2413 /* deactivate pins to sleep state */
2414 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2415 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2418 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2419 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2420 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
2421 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2427 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2429 const struct dev_pm_ops snd_soc_pm_ops
= {
2430 .suspend
= snd_soc_suspend
,
2431 .resume
= snd_soc_resume
,
2432 .freeze
= snd_soc_suspend
,
2433 .thaw
= snd_soc_resume
,
2434 .poweroff
= snd_soc_poweroff
,
2435 .restore
= snd_soc_resume
,
2437 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2439 /* ASoC platform driver */
2440 static struct platform_driver soc_driver
= {
2442 .name
= "soc-audio",
2443 .pm
= &snd_soc_pm_ops
,
2446 .remove
= soc_remove
,
2450 * snd_soc_cnew - create new control
2451 * @_template: control template
2452 * @data: control private data
2453 * @long_name: control long name
2454 * @prefix: control name prefix
2456 * Create a new mixer control from a template control.
2458 * Returns 0 for success, else error.
2460 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2461 void *data
, const char *long_name
,
2464 struct snd_kcontrol_new
template;
2465 struct snd_kcontrol
*kcontrol
;
2468 memcpy(&template, _template
, sizeof(template));
2472 long_name
= template.name
;
2475 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2479 template.name
= name
;
2481 template.name
= long_name
;
2484 kcontrol
= snd_ctl_new1(&template, data
);
2490 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2492 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2493 const struct snd_kcontrol_new
*controls
, int num_controls
,
2494 const char *prefix
, void *data
)
2498 for (i
= 0; i
< num_controls
; i
++) {
2499 const struct snd_kcontrol_new
*control
= &controls
[i
];
2500 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2501 control
->name
, prefix
));
2503 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2504 control
->name
, err
);
2512 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2515 struct snd_card
*card
= soc_card
->snd_card
;
2516 struct snd_kcontrol
*kctl
;
2518 if (unlikely(!name
))
2521 list_for_each_entry(kctl
, &card
->controls
, list
)
2522 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2526 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2529 * snd_soc_add_component_controls - Add an array of controls to a component.
2531 * @component: Component to add controls to
2532 * @controls: Array of controls to add
2533 * @num_controls: Number of elements in the array
2535 * Return: 0 for success, else error.
2537 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2538 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2540 struct snd_card
*card
= component
->card
->snd_card
;
2542 return snd_soc_add_controls(card
, component
->dev
, controls
,
2543 num_controls
, component
->name_prefix
, component
);
2545 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2548 * snd_soc_add_codec_controls - add an array of controls to a codec.
2549 * Convenience function to add a list of controls. Many codecs were
2550 * duplicating this code.
2552 * @codec: codec to add controls to
2553 * @controls: array of controls to add
2554 * @num_controls: number of elements in the array
2556 * Return 0 for success, else error.
2558 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2559 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2561 return snd_soc_add_component_controls(&codec
->component
, controls
,
2564 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2567 * snd_soc_add_platform_controls - add an array of controls to a platform.
2568 * Convenience function to add a list of controls.
2570 * @platform: platform to add controls to
2571 * @controls: array of controls to add
2572 * @num_controls: number of elements in the array
2574 * Return 0 for success, else error.
2576 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2577 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2579 return snd_soc_add_component_controls(&platform
->component
, controls
,
2582 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2585 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2586 * Convenience function to add a list of controls.
2588 * @soc_card: SoC card to add controls to
2589 * @controls: array of controls to add
2590 * @num_controls: number of elements in the array
2592 * Return 0 for success, else error.
2594 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2595 const struct snd_kcontrol_new
*controls
, int num_controls
)
2597 struct snd_card
*card
= soc_card
->snd_card
;
2599 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2602 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2605 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2606 * Convienience function to add a list of controls.
2608 * @dai: DAI to add controls to
2609 * @controls: array of controls to add
2610 * @num_controls: number of elements in the array
2612 * Return 0 for success, else error.
2614 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2615 const struct snd_kcontrol_new
*controls
, int num_controls
)
2617 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2619 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2622 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2625 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2627 * @clk_id: DAI specific clock ID
2628 * @freq: new clock frequency in Hz
2629 * @dir: new clock direction - input/output.
2631 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2633 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2634 unsigned int freq
, int dir
)
2636 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2637 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2639 return snd_soc_component_set_sysclk(dai
->component
, clk_id
, 0,
2642 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2645 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2647 * @clk_id: DAI specific clock ID
2648 * @source: Source for the clock
2649 * @freq: new clock frequency in Hz
2650 * @dir: new clock direction - input/output.
2652 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2654 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2655 int source
, unsigned int freq
, int dir
)
2657 if (codec
->driver
->set_sysclk
)
2658 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2663 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2666 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2667 * @component: COMPONENT
2668 * @clk_id: DAI specific clock ID
2669 * @source: Source for the clock
2670 * @freq: new clock frequency in Hz
2671 * @dir: new clock direction - input/output.
2673 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2675 int snd_soc_component_set_sysclk(struct snd_soc_component
*component
, int clk_id
,
2676 int source
, unsigned int freq
, int dir
)
2678 /* will be removed */
2679 if (component
->set_sysclk
)
2680 return component
->set_sysclk(component
, clk_id
, source
,
2683 if (component
->driver
->set_sysclk
)
2684 return component
->driver
->set_sysclk(component
, clk_id
, source
,
2689 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk
);
2692 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2694 * @div_id: DAI specific clock divider ID
2695 * @div: new clock divisor.
2697 * Configures the clock dividers. This is used to derive the best DAI bit and
2698 * frame clocks from the system or master clock. It's best to set the DAI bit
2699 * and frame clocks as low as possible to save system power.
2701 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2702 int div_id
, int div
)
2704 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2705 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2709 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2712 * snd_soc_dai_set_pll - configure DAI PLL.
2714 * @pll_id: DAI specific PLL ID
2715 * @source: DAI specific source for the PLL
2716 * @freq_in: PLL input clock frequency in Hz
2717 * @freq_out: requested PLL output clock frequency in Hz
2719 * Configures and enables PLL to generate output clock based on input clock.
2721 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2722 unsigned int freq_in
, unsigned int freq_out
)
2724 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2725 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2728 return snd_soc_component_set_pll(dai
->component
, pll_id
, source
,
2731 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2734 * snd_soc_codec_set_pll - configure codec PLL.
2736 * @pll_id: DAI specific PLL ID
2737 * @source: DAI specific source for the PLL
2738 * @freq_in: PLL input clock frequency in Hz
2739 * @freq_out: requested PLL output clock frequency in Hz
2741 * Configures and enables PLL to generate output clock based on input clock.
2743 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2744 unsigned int freq_in
, unsigned int freq_out
)
2746 if (codec
->driver
->set_pll
)
2747 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2752 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2755 * snd_soc_component_set_pll - configure component PLL.
2756 * @component: COMPONENT
2757 * @pll_id: DAI specific PLL ID
2758 * @source: DAI specific source for the PLL
2759 * @freq_in: PLL input clock frequency in Hz
2760 * @freq_out: requested PLL output clock frequency in Hz
2762 * Configures and enables PLL to generate output clock based on input clock.
2764 int snd_soc_component_set_pll(struct snd_soc_component
*component
, int pll_id
,
2765 int source
, unsigned int freq_in
,
2766 unsigned int freq_out
)
2768 /* will be removed */
2769 if (component
->set_pll
)
2770 return component
->set_pll(component
, pll_id
, source
,
2773 if (component
->driver
->set_pll
)
2774 return component
->driver
->set_pll(component
, pll_id
, source
,
2779 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll
);
2782 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2784 * @ratio: Ratio of BCLK to Sample rate.
2786 * Configures the DAI for a preset BCLK to sample rate ratio.
2788 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2790 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2791 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2795 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2798 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2800 * @fmt: SND_SOC_DAIFMT_ format value.
2802 * Configures the DAI hardware format and clocking.
2804 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2806 if (dai
->driver
== NULL
)
2808 if (dai
->driver
->ops
->set_fmt
== NULL
)
2810 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2812 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2815 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2816 * @slots: Number of slots in use.
2817 * @tx_mask: bitmask representing active TX slots.
2818 * @rx_mask: bitmask representing active RX slots.
2820 * Generates the TDM tx and rx slot default masks for DAI.
2822 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2823 unsigned int *tx_mask
,
2824 unsigned int *rx_mask
)
2826 if (*tx_mask
|| *rx_mask
)
2832 *tx_mask
= (1 << slots
) - 1;
2833 *rx_mask
= (1 << slots
) - 1;
2839 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2840 * @dai: The DAI to configure
2841 * @tx_mask: bitmask representing active TX slots.
2842 * @rx_mask: bitmask representing active RX slots.
2843 * @slots: Number of slots in use.
2844 * @slot_width: Width in bits for each slot.
2846 * This function configures the specified DAI for TDM operation. @slot contains
2847 * the total number of slots of the TDM stream and @slot_with the width of each
2848 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2849 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2850 * DAI should write to or read from. If a bit is set the corresponding slot is
2851 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2852 * the first slot, bit 1 to the second slot and so on. The first active slot
2853 * maps to the first channel of the DAI, the second active slot to the second
2854 * channel and so on.
2856 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2857 * @rx_mask and @slot_width will be ignored.
2859 * Returns 0 on success, a negative error code otherwise.
2861 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2862 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2864 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2865 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2866 &tx_mask
, &rx_mask
);
2868 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2870 dai
->tx_mask
= tx_mask
;
2871 dai
->rx_mask
= rx_mask
;
2873 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2874 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2879 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2882 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2884 * @tx_num: how many TX channels
2885 * @tx_slot: pointer to an array which imply the TX slot number channel
2887 * @rx_num: how many RX channels
2888 * @rx_slot: pointer to an array which imply the RX slot number channel
2891 * configure the relationship between channel number and TDM slot number.
2893 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2894 unsigned int tx_num
, unsigned int *tx_slot
,
2895 unsigned int rx_num
, unsigned int *rx_slot
)
2897 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2898 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2903 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2906 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2908 * @tristate: tristate enable
2910 * Tristates the DAI so that others can use it.
2912 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2914 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2915 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2919 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2922 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2924 * @mute: mute enable
2925 * @direction: stream to mute
2927 * Mutes the DAI DAC.
2929 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2935 if (dai
->driver
->ops
->mute_stream
)
2936 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2937 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2938 dai
->driver
->ops
->digital_mute
)
2939 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2943 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2946 * snd_soc_register_card - Register a card with the ASoC core
2948 * @card: Card to register
2951 int snd_soc_register_card(struct snd_soc_card
*card
)
2954 struct snd_soc_pcm_runtime
*rtd
;
2956 if (!card
->name
|| !card
->dev
)
2959 for (i
= 0; i
< card
->num_links
; i
++) {
2960 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2962 ret
= soc_init_dai_link(card
, link
);
2964 dev_err(card
->dev
, "ASoC: failed to init link %s\n",
2970 dev_set_drvdata(card
->dev
, card
);
2972 snd_soc_initialize_card_lists(card
);
2974 INIT_LIST_HEAD(&card
->dai_link_list
);
2975 card
->num_dai_links
= 0;
2977 INIT_LIST_HEAD(&card
->rtd_list
);
2980 INIT_LIST_HEAD(&card
->dapm_dirty
);
2981 INIT_LIST_HEAD(&card
->dobj_list
);
2982 card
->instantiated
= 0;
2983 mutex_init(&card
->mutex
);
2984 mutex_init(&card
->dapm_mutex
);
2986 ret
= snd_soc_instantiate_card(card
);
2990 /* deactivate pins to sleep state */
2991 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2992 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2995 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2996 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2997 if (!codec_dai
->active
)
2998 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
3001 if (!cpu_dai
->active
)
3002 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
3007 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3010 * snd_soc_unregister_card - Unregister a card with the ASoC core
3012 * @card: Card to unregister
3015 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3017 if (card
->instantiated
) {
3018 card
->instantiated
= false;
3019 snd_soc_dapm_shutdown(card
);
3020 soc_cleanup_card_resources(card
);
3021 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3026 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3029 * Simplify DAI link configuration by removing ".-1" from device names
3030 * and sanitizing names.
3032 static char *fmt_single_name(struct device
*dev
, int *id
)
3034 char *found
, name
[NAME_SIZE
];
3037 if (dev_name(dev
) == NULL
)
3040 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3042 /* are we a "%s.%d" name (platform and SPI components) */
3043 found
= strstr(name
, dev
->driver
->name
);
3046 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3048 /* discard ID from name if ID == -1 */
3050 found
[strlen(dev
->driver
->name
)] = '\0';
3054 /* I2C component devices are named "bus-addr" */
3055 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3056 char tmp
[NAME_SIZE
];
3058 /* create unique ID number from I2C addr and bus */
3059 *id
= ((id1
& 0xffff) << 16) + id2
;
3061 /* sanitize component name for DAI link creation */
3062 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3063 strlcpy(name
, tmp
, NAME_SIZE
);
3068 return kstrdup(name
, GFP_KERNEL
);
3072 * Simplify DAI link naming for single devices with multiple DAIs by removing
3073 * any ".-1" and using the DAI name (instead of device name).
3075 static inline char *fmt_multiple_name(struct device
*dev
,
3076 struct snd_soc_dai_driver
*dai_drv
)
3078 if (dai_drv
->name
== NULL
) {
3080 "ASoC: error - multiple DAI %s registered with no name\n",
3085 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3089 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3091 * @component: The component for which the DAIs should be unregistered
3093 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
3095 struct snd_soc_dai
*dai
, *_dai
;
3097 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3098 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3100 list_del(&dai
->list
);
3106 /* Create a DAI and add it to the component's DAI list */
3107 static struct snd_soc_dai
*soc_add_dai(struct snd_soc_component
*component
,
3108 struct snd_soc_dai_driver
*dai_drv
,
3109 bool legacy_dai_naming
)
3111 struct device
*dev
= component
->dev
;
3112 struct snd_soc_dai
*dai
;
3114 dev_dbg(dev
, "ASoC: dynamically register DAI %s\n", dev_name(dev
));
3116 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3121 * Back in the old days when we still had component-less DAIs,
3122 * instead of having a static name, component-less DAIs would
3123 * inherit the name of the parent device so it is possible to
3124 * register multiple instances of the DAI. We still need to keep
3125 * the same naming style even though those DAIs are not
3126 * component-less anymore.
3128 if (legacy_dai_naming
&&
3129 (dai_drv
->id
== 0 || dai_drv
->name
== NULL
)) {
3130 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3132 dai
->name
= fmt_multiple_name(dev
, dai_drv
);
3134 dai
->id
= dai_drv
->id
;
3136 dai
->id
= component
->num_dai
;
3138 if (dai
->name
== NULL
) {
3143 dai
->component
= component
;
3145 dai
->driver
= dai_drv
;
3146 if (!dai
->driver
->ops
)
3147 dai
->driver
->ops
= &null_dai_ops
;
3149 list_add(&dai
->list
, &component
->dai_list
);
3150 component
->num_dai
++;
3152 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3157 * snd_soc_register_dais - Register a DAI with the ASoC core
3159 * @component: The component the DAIs are registered for
3160 * @dai_drv: DAI driver to use for the DAIs
3161 * @count: Number of DAIs
3162 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3165 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3166 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
3167 bool legacy_dai_naming
)
3169 struct device
*dev
= component
->dev
;
3170 struct snd_soc_dai
*dai
;
3174 dev_dbg(dev
, "ASoC: dai register %s #%zu\n", dev_name(dev
), count
);
3176 component
->dai_drv
= dai_drv
;
3178 for (i
= 0; i
< count
; i
++) {
3180 dai
= soc_add_dai(component
, dai_drv
+ i
,
3181 count
== 1 && legacy_dai_naming
);
3191 snd_soc_unregister_dais(component
);
3197 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3199 * @component: The component the DAIs are registered for
3200 * @dai_drv: DAI driver to use for the DAI
3202 * Topology can use this API to register DAIs when probing a component.
3203 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3204 * will be freed in the component cleanup.
3206 int snd_soc_register_dai(struct snd_soc_component
*component
,
3207 struct snd_soc_dai_driver
*dai_drv
)
3209 struct snd_soc_dapm_context
*dapm
=
3210 snd_soc_component_get_dapm(component
);
3211 struct snd_soc_dai
*dai
;
3214 if (dai_drv
->dobj
.type
!= SND_SOC_DOBJ_PCM
) {
3215 dev_err(component
->dev
, "Invalid dai type %d\n",
3216 dai_drv
->dobj
.type
);
3220 lockdep_assert_held(&client_mutex
);
3221 dai
= soc_add_dai(component
, dai_drv
, false);
3225 /* Create the DAI widgets here. After adding DAIs, topology may
3226 * also add routes that need these widgets as source or sink.
3228 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
3230 dev_err(component
->dev
,
3231 "Failed to create DAI widgets %d\n", ret
);
3236 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3238 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
3239 enum snd_soc_dapm_type type
, int subseq
)
3241 struct snd_soc_component
*component
= dapm
->component
;
3243 component
->driver
->seq_notifier(component
, type
, subseq
);
3246 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
3249 struct snd_soc_component
*component
= dapm
->component
;
3251 return component
->driver
->stream_event(component
, event
);
3254 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
3255 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
3257 struct snd_soc_dapm_context
*dapm
;
3259 component
->name
= fmt_single_name(dev
, &component
->id
);
3260 if (!component
->name
) {
3261 dev_err(dev
, "ASoC: Failed to allocate name\n");
3265 component
->dev
= dev
;
3266 component
->driver
= driver
;
3267 component
->probe
= component
->driver
->probe
;
3268 component
->remove
= component
->driver
->remove
;
3269 component
->suspend
= component
->driver
->suspend
;
3270 component
->resume
= component
->driver
->resume
;
3271 component
->set_sysclk
= component
->driver
->set_sysclk
;
3272 component
->set_pll
= component
->driver
->set_pll
;
3273 component
->set_jack
= component
->driver
->set_jack
;
3275 dapm
= snd_soc_component_get_dapm(component
);
3277 dapm
->component
= component
;
3278 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
3279 dapm
->idle_bias_off
= true;
3280 if (driver
->seq_notifier
)
3281 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
3282 if (driver
->stream_event
)
3283 dapm
->stream_event
= snd_soc_component_stream_event
;
3285 INIT_LIST_HEAD(&component
->dai_list
);
3286 mutex_init(&component
->io_mutex
);
3291 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
3293 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
3295 /* Errors are legitimate for non-integer byte multiples */
3297 component
->val_bytes
= val_bytes
;
3300 #ifdef CONFIG_REGMAP
3303 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3304 * @component: The component for which to initialize the regmap instance
3305 * @regmap: The regmap instance that should be used by the component
3307 * This function allows deferred assignment of the regmap instance that is
3308 * associated with the component. Only use this if the regmap instance is not
3309 * yet ready when the component is registered. The function must also be called
3310 * before the first IO attempt of the component.
3312 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
3313 struct regmap
*regmap
)
3315 component
->regmap
= regmap
;
3316 snd_soc_component_setup_regmap(component
);
3318 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
3321 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3322 * @component: The component for which to de-initialize the regmap instance
3324 * Calls regmap_exit() on the regmap instance associated to the component and
3325 * removes the regmap instance from the component.
3327 * This function should only be used if snd_soc_component_init_regmap() was used
3328 * to initialize the regmap instance.
3330 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
3332 regmap_exit(component
->regmap
);
3333 component
->regmap
= NULL
;
3335 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
3339 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
3341 if (!component
->write
&& !component
->read
) {
3342 if (!component
->regmap
)
3343 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
3344 if (component
->regmap
)
3345 snd_soc_component_setup_regmap(component
);
3348 list_add(&component
->list
, &component_list
);
3349 INIT_LIST_HEAD(&component
->dobj_list
);
3352 static void snd_soc_component_add(struct snd_soc_component
*component
)
3354 mutex_lock(&client_mutex
);
3355 snd_soc_component_add_unlocked(component
);
3356 mutex_unlock(&client_mutex
);
3359 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
3361 snd_soc_unregister_dais(component
);
3362 kfree(component
->name
);
3365 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
3367 struct snd_soc_card
*card
= component
->card
;
3370 snd_soc_unregister_card(card
);
3372 list_del(&component
->list
);
3375 int snd_soc_register_component(struct device
*dev
,
3376 const struct snd_soc_component_driver
*component_driver
,
3377 struct snd_soc_dai_driver
*dai_drv
,
3380 struct snd_soc_component
*component
;
3383 component
= kzalloc(sizeof(*component
), GFP_KERNEL
);
3385 dev_err(dev
, "ASoC: Failed to allocate memory\n");
3389 ret
= snd_soc_component_initialize(component
, component_driver
, dev
);
3393 component
->ignore_pmdown_time
= true;
3394 component
->registered_as_component
= true;
3396 ret
= snd_soc_register_dais(component
, dai_drv
, num_dai
, true);
3398 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3402 snd_soc_component_add(component
);
3407 snd_soc_component_cleanup(component
);
3412 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
3415 * snd_soc_unregister_component - Unregister all related component
3416 * from the ASoC core
3418 * @dev: The device to unregister
3420 static int __snd_soc_unregister_component(struct device
*dev
)
3422 struct snd_soc_component
*component
;
3425 mutex_lock(&client_mutex
);
3426 list_for_each_entry(component
, &component_list
, list
) {
3427 if (dev
!= component
->dev
||
3428 !component
->registered_as_component
)
3431 snd_soc_tplg_component_remove(component
, SND_SOC_TPLG_INDEX_ALL
);
3432 snd_soc_component_del_unlocked(component
);
3436 mutex_unlock(&client_mutex
);
3439 snd_soc_component_cleanup(component
);
3446 void snd_soc_unregister_component(struct device
*dev
)
3448 while (__snd_soc_unregister_component(dev
));
3450 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
3452 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
3454 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3456 return platform
->driver
->probe(platform
);
3459 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
3461 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3463 platform
->driver
->remove(platform
);
3467 * snd_soc_add_platform - Add a platform to the ASoC core
3468 * @dev: The parent device for the platform
3469 * @platform: The platform to add
3470 * @platform_drv: The driver for the platform
3472 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3473 const struct snd_soc_platform_driver
*platform_drv
)
3477 ret
= snd_soc_component_initialize(&platform
->component
,
3478 &platform_drv
->component_driver
, dev
);
3482 platform
->dev
= dev
;
3483 platform
->driver
= platform_drv
;
3485 if (platform_drv
->probe
)
3486 platform
->component
.probe
= snd_soc_platform_drv_probe
;
3487 if (platform_drv
->remove
)
3488 platform
->component
.remove
= snd_soc_platform_drv_remove
;
3490 #ifdef CONFIG_DEBUG_FS
3491 platform
->component
.debugfs_prefix
= "platform";
3494 mutex_lock(&client_mutex
);
3495 snd_soc_component_add_unlocked(&platform
->component
);
3496 list_add(&platform
->list
, &platform_list
);
3497 mutex_unlock(&client_mutex
);
3499 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
3500 platform
->component
.name
);
3504 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3507 * snd_soc_register_platform - Register a platform with the ASoC core
3509 * @dev: The device for the platform
3510 * @platform_drv: The driver for the platform
3512 int snd_soc_register_platform(struct device
*dev
,
3513 const struct snd_soc_platform_driver
*platform_drv
)
3515 struct snd_soc_platform
*platform
;
3518 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3520 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3521 if (platform
== NULL
)
3524 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3530 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3533 * snd_soc_remove_platform - Remove a platform from the ASoC core
3534 * @platform: the platform to remove
3536 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
3539 mutex_lock(&client_mutex
);
3540 list_del(&platform
->list
);
3541 snd_soc_component_del_unlocked(&platform
->component
);
3542 mutex_unlock(&client_mutex
);
3544 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
3545 platform
->component
.name
);
3547 snd_soc_component_cleanup(&platform
->component
);
3549 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
3551 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
3553 struct snd_soc_platform
*platform
;
3555 mutex_lock(&client_mutex
);
3556 list_for_each_entry(platform
, &platform_list
, list
) {
3557 if (dev
== platform
->dev
) {
3558 mutex_unlock(&client_mutex
);
3562 mutex_unlock(&client_mutex
);
3566 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
3569 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3571 * @dev: platform to unregister
3573 void snd_soc_unregister_platform(struct device
*dev
)
3575 struct snd_soc_platform
*platform
;
3577 platform
= snd_soc_lookup_platform(dev
);
3581 snd_soc_remove_platform(platform
);
3584 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3586 static u64 codec_format_map
[] = {
3587 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3588 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3589 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3590 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3591 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3592 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3593 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3594 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3595 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3596 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3597 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3598 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3599 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3600 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3601 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3602 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3605 /* Fix up the DAI formats for endianness: codecs don't actually see
3606 * the endianness of the data but we're using the CPU format
3607 * definitions which do need to include endianness so we ensure that
3608 * codec DAIs always have both big and little endian variants set.
3610 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3614 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3615 if (stream
->formats
& codec_format_map
[i
])
3616 stream
->formats
|= codec_format_map
[i
];
3619 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
3621 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3623 return codec
->driver
->probe(codec
);
3626 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
3628 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3630 codec
->driver
->remove(codec
);
3633 static int snd_soc_codec_drv_suspend(struct snd_soc_component
*component
)
3635 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3637 return codec
->driver
->suspend(codec
);
3640 static int snd_soc_codec_drv_resume(struct snd_soc_component
*component
)
3642 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3644 return codec
->driver
->resume(codec
);
3647 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3648 unsigned int reg
, unsigned int val
)
3650 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3652 return codec
->driver
->write(codec
, reg
, val
);
3655 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3656 unsigned int reg
, unsigned int *val
)
3658 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3660 *val
= codec
->driver
->read(codec
, reg
);
3665 static int snd_soc_codec_set_sysclk_(struct snd_soc_component
*component
,
3666 int clk_id
, int source
, unsigned int freq
, int dir
)
3668 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3670 return snd_soc_codec_set_sysclk(codec
, clk_id
, source
, freq
, dir
);
3673 static int snd_soc_codec_set_pll_(struct snd_soc_component
*component
,
3674 int pll_id
, int source
, unsigned int freq_in
,
3675 unsigned int freq_out
)
3677 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3679 return snd_soc_codec_set_pll(codec
, pll_id
, source
, freq_in
, freq_out
);
3682 static int snd_soc_codec_set_jack_(struct snd_soc_component
*component
,
3683 struct snd_soc_jack
*jack
, void *data
)
3685 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3687 return snd_soc_codec_set_jack(codec
, jack
, data
);
3690 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3691 enum snd_soc_bias_level level
)
3693 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3695 return codec
->driver
->set_bias_level(codec
, level
);
3699 * snd_soc_register_codec - Register a codec with the ASoC core
3701 * @dev: The parent device for this codec
3702 * @codec_drv: Codec driver
3703 * @dai_drv: The associated DAI driver
3704 * @num_dai: Number of DAIs
3706 int snd_soc_register_codec(struct device
*dev
,
3707 const struct snd_soc_codec_driver
*codec_drv
,
3708 struct snd_soc_dai_driver
*dai_drv
,
3711 struct snd_soc_dapm_context
*dapm
;
3712 struct snd_soc_codec
*codec
;
3713 struct snd_soc_dai
*dai
;
3716 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3718 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3722 codec
->component
.codec
= codec
;
3724 ret
= snd_soc_component_initialize(&codec
->component
,
3725 &codec_drv
->component_driver
, dev
);
3729 if (codec_drv
->probe
)
3730 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3731 if (codec_drv
->remove
)
3732 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3733 if (codec_drv
->suspend
)
3734 codec
->component
.suspend
= snd_soc_codec_drv_suspend
;
3735 if (codec_drv
->resume
)
3736 codec
->component
.resume
= snd_soc_codec_drv_resume
;
3737 if (codec_drv
->write
)
3738 codec
->component
.write
= snd_soc_codec_drv_write
;
3739 if (codec_drv
->read
)
3740 codec
->component
.read
= snd_soc_codec_drv_read
;
3741 if (codec_drv
->set_sysclk
)
3742 codec
->component
.set_sysclk
= snd_soc_codec_set_sysclk_
;
3743 if (codec_drv
->set_pll
)
3744 codec
->component
.set_pll
= snd_soc_codec_set_pll_
;
3745 if (codec_drv
->set_jack
)
3746 codec
->component
.set_jack
= snd_soc_codec_set_jack_
;
3747 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3749 dapm
= snd_soc_codec_get_dapm(codec
);
3750 dapm
->idle_bias_off
= codec_drv
->idle_bias_off
;
3751 dapm
->suspend_bias_off
= codec_drv
->suspend_bias_off
;
3752 if (codec_drv
->seq_notifier
)
3753 dapm
->seq_notifier
= codec_drv
->seq_notifier
;
3754 if (codec_drv
->set_bias_level
)
3755 dapm
->set_bias_level
= snd_soc_codec_set_bias_level
;
3757 codec
->driver
= codec_drv
;
3758 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3760 #ifdef CONFIG_DEBUG_FS
3761 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3762 codec
->component
.debugfs_prefix
= "codec";
3765 if (codec_drv
->get_regmap
)
3766 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3768 for (i
= 0; i
< num_dai
; i
++) {
3769 fixup_codec_formats(&dai_drv
[i
].playback
);
3770 fixup_codec_formats(&dai_drv
[i
].capture
);
3773 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3775 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3779 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3782 mutex_lock(&client_mutex
);
3783 snd_soc_component_add_unlocked(&codec
->component
);
3784 list_add(&codec
->list
, &codec_list
);
3785 mutex_unlock(&client_mutex
);
3787 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3788 codec
->component
.name
);
3792 snd_soc_component_cleanup(&codec
->component
);
3797 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3800 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3802 * @dev: codec to unregister
3804 void snd_soc_unregister_codec(struct device
*dev
)
3806 struct snd_soc_codec
*codec
;
3808 mutex_lock(&client_mutex
);
3809 list_for_each_entry(codec
, &codec_list
, list
) {
3810 if (dev
== codec
->dev
)
3813 mutex_unlock(&client_mutex
);
3817 list_del(&codec
->list
);
3818 snd_soc_component_del_unlocked(&codec
->component
);
3819 mutex_unlock(&client_mutex
);
3821 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3822 codec
->component
.name
);
3824 snd_soc_component_cleanup(&codec
->component
);
3825 snd_soc_cache_exit(codec
);
3828 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3830 /* Retrieve a card's name from device tree */
3831 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3832 const char *propname
)
3834 struct device_node
*np
;
3838 pr_err("card->dev is not set before calling %s\n", __func__
);
3842 np
= card
->dev
->of_node
;
3844 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3846 * EINVAL means the property does not exist. This is fine providing
3847 * card->name was previously set, which is checked later in
3848 * snd_soc_register_card.
3850 if (ret
< 0 && ret
!= -EINVAL
) {
3852 "ASoC: Property '%s' could not be read: %d\n",
3859 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3861 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3862 SND_SOC_DAPM_MIC("Microphone", NULL
),
3863 SND_SOC_DAPM_LINE("Line", NULL
),
3864 SND_SOC_DAPM_HP("Headphone", NULL
),
3865 SND_SOC_DAPM_SPK("Speaker", NULL
),
3868 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3869 const char *propname
)
3871 struct device_node
*np
= card
->dev
->of_node
;
3872 struct snd_soc_dapm_widget
*widgets
;
3873 const char *template, *wname
;
3874 int i
, j
, num_widgets
, ret
;
3876 num_widgets
= of_property_count_strings(np
, propname
);
3877 if (num_widgets
< 0) {
3879 "ASoC: Property '%s' does not exist\n", propname
);
3882 if (num_widgets
& 1) {
3884 "ASoC: Property '%s' length is not even\n", propname
);
3890 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3895 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3899 "ASoC: Could not allocate memory for widgets\n");
3903 for (i
= 0; i
< num_widgets
; i
++) {
3904 ret
= of_property_read_string_index(np
, propname
,
3908 "ASoC: Property '%s' index %d read error:%d\n",
3909 propname
, 2 * i
, ret
);
3913 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3914 if (!strncmp(template, simple_widgets
[j
].name
,
3915 strlen(simple_widgets
[j
].name
))) {
3916 widgets
[i
] = simple_widgets
[j
];
3921 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3923 "ASoC: DAPM widget '%s' is not supported\n",
3928 ret
= of_property_read_string_index(np
, propname
,
3933 "ASoC: Property '%s' index %d read error:%d\n",
3934 propname
, (2 * i
) + 1, ret
);
3938 widgets
[i
].name
= wname
;
3941 card
->of_dapm_widgets
= widgets
;
3942 card
->num_of_dapm_widgets
= num_widgets
;
3946 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3948 static int snd_soc_of_get_slot_mask(struct device_node
*np
,
3949 const char *prop_name
,
3953 const __be32
*of_slot_mask
= of_get_property(np
, prop_name
, &val
);
3959 for (i
= 0; i
< val
; i
++)
3960 if (be32_to_cpup(&of_slot_mask
[i
]))
3966 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3967 unsigned int *tx_mask
,
3968 unsigned int *rx_mask
,
3969 unsigned int *slots
,
3970 unsigned int *slot_width
)
3976 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-tx-mask", tx_mask
);
3978 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-rx-mask", rx_mask
);
3980 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3981 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3989 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3990 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
4000 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4002 void snd_soc_of_parse_audio_prefix(struct snd_soc_card
*card
,
4003 struct snd_soc_codec_conf
*codec_conf
,
4004 struct device_node
*of_node
,
4005 const char *propname
)
4007 struct device_node
*np
= card
->dev
->of_node
;
4011 ret
= of_property_read_string(np
, propname
, &str
);
4013 /* no prefix is not error */
4017 codec_conf
->of_node
= of_node
;
4018 codec_conf
->name_prefix
= str
;
4020 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix
);
4022 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4023 const char *propname
)
4025 struct device_node
*np
= card
->dev
->of_node
;
4027 struct snd_soc_dapm_route
*routes
;
4030 num_routes
= of_property_count_strings(np
, propname
);
4031 if (num_routes
< 0 || num_routes
& 1) {
4033 "ASoC: Property '%s' does not exist or its length is not even\n",
4039 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4044 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4048 "ASoC: Could not allocate DAPM route table\n");
4052 for (i
= 0; i
< num_routes
; i
++) {
4053 ret
= of_property_read_string_index(np
, propname
,
4054 2 * i
, &routes
[i
].sink
);
4057 "ASoC: Property '%s' index %d could not be read: %d\n",
4058 propname
, 2 * i
, ret
);
4061 ret
= of_property_read_string_index(np
, propname
,
4062 (2 * i
) + 1, &routes
[i
].source
);
4065 "ASoC: Property '%s' index %d could not be read: %d\n",
4066 propname
, (2 * i
) + 1, ret
);
4071 card
->num_of_dapm_routes
= num_routes
;
4072 card
->of_dapm_routes
= routes
;
4076 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4078 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4080 struct device_node
**bitclkmaster
,
4081 struct device_node
**framemaster
)
4085 unsigned int format
= 0;
4091 } of_fmt_table
[] = {
4092 { "i2s", SND_SOC_DAIFMT_I2S
},
4093 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4094 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4095 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4096 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4097 { "ac97", SND_SOC_DAIFMT_AC97
},
4098 { "pdm", SND_SOC_DAIFMT_PDM
},
4099 { "msb", SND_SOC_DAIFMT_MSB
},
4100 { "lsb", SND_SOC_DAIFMT_LSB
},
4107 * check "dai-format = xxx"
4108 * or "[prefix]format = xxx"
4109 * SND_SOC_DAIFMT_FORMAT_MASK area
4111 ret
= of_property_read_string(np
, "dai-format", &str
);
4113 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4114 ret
= of_property_read_string(np
, prop
, &str
);
4117 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4118 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4119 format
|= of_fmt_table
[i
].val
;
4126 * check "[prefix]continuous-clock"
4127 * SND_SOC_DAIFMT_CLOCK_MASK area
4129 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4130 if (of_property_read_bool(np
, prop
))
4131 format
|= SND_SOC_DAIFMT_CONT
;
4133 format
|= SND_SOC_DAIFMT_GATED
;
4136 * check "[prefix]bitclock-inversion"
4137 * check "[prefix]frame-inversion"
4138 * SND_SOC_DAIFMT_INV_MASK area
4140 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4141 bit
= !!of_get_property(np
, prop
, NULL
);
4143 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4144 frame
= !!of_get_property(np
, prop
, NULL
);
4146 switch ((bit
<< 4) + frame
) {
4148 format
|= SND_SOC_DAIFMT_IB_IF
;
4151 format
|= SND_SOC_DAIFMT_IB_NF
;
4154 format
|= SND_SOC_DAIFMT_NB_IF
;
4157 /* SND_SOC_DAIFMT_NB_NF is default */
4162 * check "[prefix]bitclock-master"
4163 * check "[prefix]frame-master"
4164 * SND_SOC_DAIFMT_MASTER_MASK area
4166 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4167 bit
= !!of_get_property(np
, prop
, NULL
);
4168 if (bit
&& bitclkmaster
)
4169 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
4171 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4172 frame
= !!of_get_property(np
, prop
, NULL
);
4173 if (frame
&& framemaster
)
4174 *framemaster
= of_parse_phandle(np
, prop
, 0);
4176 switch ((bit
<< 4) + frame
) {
4178 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4181 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4184 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4187 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4193 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4195 int snd_soc_get_dai_id(struct device_node
*ep
)
4197 struct snd_soc_component
*pos
;
4198 struct device_node
*node
;
4201 node
= of_graph_get_port_parent(ep
);
4204 * For example HDMI case, HDMI has video/sound port,
4205 * but ALSA SoC needs sound port number only.
4206 * Thus counting HDMI DT port/endpoint doesn't work.
4207 * Then, it should have .of_xlate_dai_id
4210 mutex_lock(&client_mutex
);
4211 list_for_each_entry(pos
, &component_list
, list
) {
4212 struct device_node
*component_of_node
= pos
->dev
->of_node
;
4214 if (!component_of_node
&& pos
->dev
->parent
)
4215 component_of_node
= pos
->dev
->parent
->of_node
;
4217 if (component_of_node
!= node
)
4220 if (pos
->driver
->of_xlate_dai_id
)
4221 ret
= pos
->driver
->of_xlate_dai_id(pos
, ep
);
4225 mutex_unlock(&client_mutex
);
4231 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id
);
4233 int snd_soc_get_dai_name(struct of_phandle_args
*args
,
4234 const char **dai_name
)
4236 struct snd_soc_component
*pos
;
4237 struct device_node
*component_of_node
;
4238 int ret
= -EPROBE_DEFER
;
4240 mutex_lock(&client_mutex
);
4241 list_for_each_entry(pos
, &component_list
, list
) {
4242 component_of_node
= pos
->dev
->of_node
;
4243 if (!component_of_node
&& pos
->dev
->parent
)
4244 component_of_node
= pos
->dev
->parent
->of_node
;
4246 if (component_of_node
!= args
->np
)
4249 if (pos
->driver
->of_xlate_dai_name
) {
4250 ret
= pos
->driver
->of_xlate_dai_name(pos
,
4256 switch (args
->args_count
) {
4258 id
= 0; /* same as dai_drv[0] */
4268 if (id
< 0 || id
>= pos
->num_dai
) {
4275 *dai_name
= pos
->dai_drv
[id
].name
;
4277 *dai_name
= pos
->name
;
4282 mutex_unlock(&client_mutex
);
4285 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name
);
4287 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4288 const char **dai_name
)
4290 struct of_phandle_args args
;
4293 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4294 "#sound-dai-cells", 0, &args
);
4298 ret
= snd_soc_get_dai_name(&args
, dai_name
);
4300 of_node_put(args
.np
);
4304 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4307 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4309 * @of_node: Device node
4310 * @dai_link: DAI link
4312 * Builds an array of CODEC DAI components from the DAI link property
4314 * The array is set in the DAI link and the number of DAIs is set accordingly.
4315 * The device nodes in the array (of_node) must be dereferenced by the caller.
4317 * Returns 0 for success
4319 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
4320 struct device_node
*of_node
,
4321 struct snd_soc_dai_link
*dai_link
)
4323 struct of_phandle_args args
;
4324 struct snd_soc_dai_link_component
*component
;
4326 int index
, num_codecs
, ret
;
4328 /* Count the number of CODECs */
4330 num_codecs
= of_count_phandle_with_args(of_node
, name
,
4331 "#sound-dai-cells");
4332 if (num_codecs
<= 0) {
4333 if (num_codecs
== -ENOENT
)
4334 dev_err(dev
, "No 'sound-dai' property\n");
4336 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
4339 component
= devm_kzalloc(dev
,
4340 sizeof *component
* num_codecs
,
4344 dai_link
->codecs
= component
;
4345 dai_link
->num_codecs
= num_codecs
;
4347 /* Parse the list */
4348 for (index
= 0, component
= dai_link
->codecs
;
4349 index
< dai_link
->num_codecs
;
4350 index
++, component
++) {
4351 ret
= of_parse_phandle_with_args(of_node
, name
,
4356 component
->of_node
= args
.np
;
4357 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
4363 for (index
= 0, component
= dai_link
->codecs
;
4364 index
< dai_link
->num_codecs
;
4365 index
++, component
++) {
4366 if (!component
->of_node
)
4368 of_node_put(component
->of_node
);
4369 component
->of_node
= NULL
;
4371 dai_link
->codecs
= NULL
;
4372 dai_link
->num_codecs
= 0;
4375 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
4377 static int __init
snd_soc_init(void)
4379 snd_soc_debugfs_init();
4380 snd_soc_util_init();
4382 return platform_driver_register(&soc_driver
);
4384 module_init(snd_soc_init
);
4386 static void __exit
snd_soc_exit(void)
4388 snd_soc_util_exit();
4389 snd_soc_debugfs_exit();
4391 platform_driver_unregister(&soc_driver
);
4393 module_exit(snd_soc_exit
);
4395 /* Module information */
4396 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4397 MODULE_DESCRIPTION("ALSA SoC Core");
4398 MODULE_LICENSE("GPL");
4399 MODULE_ALIAS("platform:soc-audio");