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 kfree(rtd
->codec_dais
);
643 snd_soc_rtdcom_del_all(rtd
);
647 static void soc_add_pcm_runtime(struct snd_soc_card
*card
,
648 struct snd_soc_pcm_runtime
*rtd
)
650 list_add_tail(&rtd
->list
, &card
->rtd_list
);
651 rtd
->num
= card
->num_rtd
;
655 static void soc_remove_pcm_runtimes(struct snd_soc_card
*card
)
657 struct snd_soc_pcm_runtime
*rtd
, *_rtd
;
659 list_for_each_entry_safe(rtd
, _rtd
, &card
->rtd_list
, list
) {
660 list_del(&rtd
->list
);
661 soc_free_pcm_runtime(rtd
);
667 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
668 const char *dai_link
)
670 struct snd_soc_pcm_runtime
*rtd
;
672 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
673 if (!strcmp(rtd
->dai_link
->name
, dai_link
))
676 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
679 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
681 static void codec2codec_close_delayed_work(struct work_struct
*work
)
683 /* Currently nothing to do for c2c links
684 * Since c2c links are internal nodes in the DAPM graph and
685 * don't interface with the outside world or application layer
686 * we don't have to do any special handling on close.
690 #ifdef CONFIG_PM_SLEEP
691 /* powers down audio subsystem for suspend */
692 int snd_soc_suspend(struct device
*dev
)
694 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
695 struct snd_soc_component
*component
;
696 struct snd_soc_pcm_runtime
*rtd
;
699 /* If the card is not initialized yet there is nothing to do */
700 if (!card
->instantiated
)
703 /* Due to the resume being scheduled into a workqueue we could
704 * suspend before that's finished - wait for it to complete.
706 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
708 /* we're going to block userspace touching us until resume completes */
709 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
711 /* mute any active DACs */
712 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
714 if (rtd
->dai_link
->ignore_suspend
)
717 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
718 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
719 struct snd_soc_dai_driver
*drv
= dai
->driver
;
721 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
722 drv
->ops
->digital_mute(dai
, 1);
726 /* suspend all pcms */
727 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
728 if (rtd
->dai_link
->ignore_suspend
)
731 snd_pcm_suspend_all(rtd
->pcm
);
734 if (card
->suspend_pre
)
735 card
->suspend_pre(card
);
737 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
738 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
740 if (rtd
->dai_link
->ignore_suspend
)
743 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
744 cpu_dai
->driver
->suspend(cpu_dai
);
747 /* close any waiting streams */
748 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
749 flush_delayed_work(&rtd
->delayed_work
);
751 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
753 if (rtd
->dai_link
->ignore_suspend
)
756 snd_soc_dapm_stream_event(rtd
,
757 SNDRV_PCM_STREAM_PLAYBACK
,
758 SND_SOC_DAPM_STREAM_SUSPEND
);
760 snd_soc_dapm_stream_event(rtd
,
761 SNDRV_PCM_STREAM_CAPTURE
,
762 SND_SOC_DAPM_STREAM_SUSPEND
);
765 /* Recheck all endpoints too, their state is affected by suspend */
766 dapm_mark_endpoints_dirty(card
);
767 snd_soc_dapm_sync(&card
->dapm
);
769 /* suspend all COMPONENTs */
770 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
771 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
773 /* If there are paths active then the COMPONENT will be held with
774 * bias _ON and should not be suspended. */
775 if (!component
->suspended
) {
776 switch (snd_soc_dapm_get_bias_level(dapm
)) {
777 case SND_SOC_BIAS_STANDBY
:
779 * If the COMPONENT is capable of idle
780 * bias off then being in STANDBY
781 * means it's doing something,
782 * otherwise fall through.
784 if (dapm
->idle_bias_off
) {
785 dev_dbg(component
->dev
,
786 "ASoC: idle_bias_off CODEC on over suspend\n");
790 case SND_SOC_BIAS_OFF
:
791 if (component
->suspend
)
792 component
->suspend(component
);
793 component
->suspended
= 1;
794 if (component
->regmap
)
795 regcache_mark_dirty(component
->regmap
);
796 /* deactivate pins to sleep state */
797 pinctrl_pm_select_sleep_state(component
->dev
);
800 dev_dbg(component
->dev
,
801 "ASoC: COMPONENT is on over suspend\n");
807 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
808 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
810 if (rtd
->dai_link
->ignore_suspend
)
813 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
814 cpu_dai
->driver
->suspend(cpu_dai
);
816 /* deactivate pins to sleep state */
817 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
820 if (card
->suspend_post
)
821 card
->suspend_post(card
);
825 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
827 /* deferred resume work, so resume can complete before we finished
828 * setting our codec back up, which can be very slow on I2C
830 static void soc_resume_deferred(struct work_struct
*work
)
832 struct snd_soc_card
*card
=
833 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
834 struct snd_soc_pcm_runtime
*rtd
;
835 struct snd_soc_component
*component
;
838 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
839 * so userspace apps are blocked from touching us
842 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
844 /* Bring us up into D2 so that DAPM starts enabling things */
845 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
847 if (card
->resume_pre
)
848 card
->resume_pre(card
);
850 /* resume control bus DAIs */
851 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
852 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
854 if (rtd
->dai_link
->ignore_suspend
)
857 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
858 cpu_dai
->driver
->resume(cpu_dai
);
861 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
862 if (component
->suspended
) {
863 if (component
->resume
)
864 component
->resume(component
);
865 component
->suspended
= 0;
869 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
871 if (rtd
->dai_link
->ignore_suspend
)
874 snd_soc_dapm_stream_event(rtd
,
875 SNDRV_PCM_STREAM_PLAYBACK
,
876 SND_SOC_DAPM_STREAM_RESUME
);
878 snd_soc_dapm_stream_event(rtd
,
879 SNDRV_PCM_STREAM_CAPTURE
,
880 SND_SOC_DAPM_STREAM_RESUME
);
883 /* unmute any active DACs */
884 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
886 if (rtd
->dai_link
->ignore_suspend
)
889 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
890 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
891 struct snd_soc_dai_driver
*drv
= dai
->driver
;
893 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
894 drv
->ops
->digital_mute(dai
, 0);
898 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
899 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
901 if (rtd
->dai_link
->ignore_suspend
)
904 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
905 cpu_dai
->driver
->resume(cpu_dai
);
908 if (card
->resume_post
)
909 card
->resume_post(card
);
911 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
913 /* Recheck all endpoints too, their state is affected by suspend */
914 dapm_mark_endpoints_dirty(card
);
915 snd_soc_dapm_sync(&card
->dapm
);
917 /* userspace can access us now we are back as we were before */
918 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
921 /* powers up audio subsystem after a suspend */
922 int snd_soc_resume(struct device
*dev
)
924 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
925 bool bus_control
= false;
926 struct snd_soc_pcm_runtime
*rtd
;
928 /* If the card is not initialized yet there is nothing to do */
929 if (!card
->instantiated
)
932 /* activate pins from sleep state */
933 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
934 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
935 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
939 pinctrl_pm_select_default_state(cpu_dai
->dev
);
941 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
942 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
943 if (codec_dai
->active
)
944 pinctrl_pm_select_default_state(codec_dai
->dev
);
949 * DAIs that also act as the control bus master might have other drivers
950 * hanging off them so need to resume immediately. Other drivers don't
951 * have that problem and may take a substantial amount of time to resume
952 * due to I/O costs and anti-pop so handle them out of line.
954 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
955 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
956 bus_control
|= cpu_dai
->driver
->bus_control
;
959 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
960 soc_resume_deferred(&card
->deferred_resume_work
);
962 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
963 if (!schedule_work(&card
->deferred_resume_work
))
964 dev_err(dev
, "ASoC: resume work item may be lost\n");
969 EXPORT_SYMBOL_GPL(snd_soc_resume
);
971 #define snd_soc_suspend NULL
972 #define snd_soc_resume NULL
975 static const struct snd_soc_dai_ops null_dai_ops
= {
978 static struct snd_soc_component
*soc_find_component(
979 const struct device_node
*of_node
, const char *name
)
981 struct snd_soc_component
*component
;
983 lockdep_assert_held(&client_mutex
);
985 list_for_each_entry(component
, &component_list
, list
) {
987 if (component
->dev
->of_node
== of_node
)
989 } else if (strcmp(component
->name
, name
) == 0) {
998 * snd_soc_find_dai - Find a registered DAI
1000 * @dlc: name of the DAI or the DAI driver and optional component info to match
1002 * This function will search all registered components and their DAIs to
1003 * find the DAI of the same name. The component's of_node and name
1004 * should also match if being specified.
1006 * Return: pointer of DAI, or NULL if not found.
1008 struct snd_soc_dai
*snd_soc_find_dai(
1009 const struct snd_soc_dai_link_component
*dlc
)
1011 struct snd_soc_component
*component
;
1012 struct snd_soc_dai
*dai
;
1013 struct device_node
*component_of_node
;
1015 lockdep_assert_held(&client_mutex
);
1017 /* Find CPU DAI from registered DAIs*/
1018 list_for_each_entry(component
, &component_list
, list
) {
1019 component_of_node
= component
->dev
->of_node
;
1020 if (!component_of_node
&& component
->dev
->parent
)
1021 component_of_node
= component
->dev
->parent
->of_node
;
1023 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
1025 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
1027 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1028 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
)
1029 && (!dai
->driver
->name
1030 || strcmp(dai
->driver
->name
, dlc
->dai_name
)))
1039 EXPORT_SYMBOL_GPL(snd_soc_find_dai
);
1043 * snd_soc_find_dai_link - Find a DAI link
1046 * @id: DAI link ID to match
1047 * @name: DAI link name to match, optional
1048 * @stream_name: DAI link stream name to match, optional
1050 * This function will search all existing DAI links of the soc card to
1051 * find the link of the same ID. Since DAI links may not have their
1052 * unique ID, so name and stream name should also match if being
1055 * Return: pointer of DAI link, or NULL if not found.
1057 struct snd_soc_dai_link
*snd_soc_find_dai_link(struct snd_soc_card
*card
,
1058 int id
, const char *name
,
1059 const char *stream_name
)
1061 struct snd_soc_dai_link
*link
, *_link
;
1063 lockdep_assert_held(&client_mutex
);
1065 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1069 if (name
&& (!link
->name
|| strcmp(name
, link
->name
)))
1072 if (stream_name
&& (!link
->stream_name
1073 || strcmp(stream_name
, link
->stream_name
)))
1081 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link
);
1083 static bool soc_is_dai_link_bound(struct snd_soc_card
*card
,
1084 struct snd_soc_dai_link
*dai_link
)
1086 struct snd_soc_pcm_runtime
*rtd
;
1088 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
1089 if (rtd
->dai_link
== dai_link
)
1096 static int soc_bind_dai_link(struct snd_soc_card
*card
,
1097 struct snd_soc_dai_link
*dai_link
)
1099 struct snd_soc_pcm_runtime
*rtd
;
1100 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
1101 struct snd_soc_dai_link_component cpu_dai_component
;
1102 struct snd_soc_component
*component
;
1103 struct snd_soc_dai
**codec_dais
;
1104 struct snd_soc_platform
*platform
;
1105 struct device_node
*platform_of_node
;
1106 const char *platform_name
;
1109 dev_dbg(card
->dev
, "ASoC: binding %s\n", dai_link
->name
);
1111 if (soc_is_dai_link_bound(card
, dai_link
)) {
1112 dev_dbg(card
->dev
, "ASoC: dai link %s already bound\n",
1117 rtd
= soc_new_pcm_runtime(card
, dai_link
);
1121 cpu_dai_component
.name
= dai_link
->cpu_name
;
1122 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
1123 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
1124 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
1125 if (!rtd
->cpu_dai
) {
1126 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
1127 dai_link
->cpu_dai_name
);
1130 snd_soc_rtdcom_add(rtd
, rtd
->cpu_dai
->component
);
1132 rtd
->num_codecs
= dai_link
->num_codecs
;
1134 /* Find CODEC from registered CODECs */
1135 codec_dais
= rtd
->codec_dais
;
1136 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1137 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
1138 if (!codec_dais
[i
]) {
1139 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
1140 codecs
[i
].dai_name
);
1143 snd_soc_rtdcom_add(rtd
, codec_dais
[i
]->component
);
1146 /* Single codec links expect codec and codec_dai in runtime data */
1147 rtd
->codec_dai
= codec_dais
[0];
1148 rtd
->codec
= rtd
->codec_dai
->codec
;
1150 /* if there's no platform we match on the empty platform */
1151 platform_name
= dai_link
->platform_name
;
1152 if (!platform_name
&& !dai_link
->platform_of_node
)
1153 platform_name
= "snd-soc-dummy";
1155 /* find one from the set of registered platforms */
1156 list_for_each_entry(component
, &component_list
, list
) {
1157 platform_of_node
= component
->dev
->of_node
;
1158 if (!platform_of_node
&& component
->dev
->parent
->of_node
)
1159 platform_of_node
= component
->dev
->parent
->of_node
;
1161 if (dai_link
->platform_of_node
) {
1162 if (platform_of_node
!= dai_link
->platform_of_node
)
1165 if (strcmp(component
->name
, platform_name
))
1169 snd_soc_rtdcom_add(rtd
, component
);
1172 /* find one from the set of registered platforms */
1173 list_for_each_entry(platform
, &platform_list
, list
) {
1174 platform_of_node
= platform
->dev
->of_node
;
1175 if (!platform_of_node
&& platform
->dev
->parent
->of_node
)
1176 platform_of_node
= platform
->dev
->parent
->of_node
;
1178 if (dai_link
->platform_of_node
) {
1179 if (platform_of_node
!= dai_link
->platform_of_node
)
1182 if (strcmp(platform
->component
.name
, platform_name
))
1186 rtd
->platform
= platform
;
1188 if (!rtd
->platform
) {
1189 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
1190 dai_link
->platform_name
);
1194 soc_add_pcm_runtime(card
, rtd
);
1198 soc_free_pcm_runtime(rtd
);
1199 return -EPROBE_DEFER
;
1202 static void soc_remove_component(struct snd_soc_component
*component
)
1204 if (!component
->card
)
1207 list_del(&component
->card_list
);
1209 if (component
->remove
)
1210 component
->remove(component
);
1212 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1214 soc_cleanup_component_debugfs(component
);
1215 component
->card
= NULL
;
1216 module_put(component
->dev
->driver
->owner
);
1219 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1223 if (dai
&& dai
->probed
&&
1224 dai
->driver
->remove_order
== order
) {
1225 if (dai
->driver
->remove
) {
1226 err
= dai
->driver
->remove(dai
);
1229 "ASoC: failed to remove %s: %d\n",
1236 static void soc_remove_link_dais(struct snd_soc_card
*card
,
1237 struct snd_soc_pcm_runtime
*rtd
, int order
)
1241 /* unregister the rtd device */
1242 if (rtd
->dev_registered
) {
1243 device_unregister(rtd
->dev
);
1244 rtd
->dev_registered
= 0;
1247 /* remove the CODEC DAI */
1248 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1249 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1251 soc_remove_dai(rtd
->cpu_dai
, order
);
1254 static void soc_remove_link_components(struct snd_soc_card
*card
,
1255 struct snd_soc_pcm_runtime
*rtd
, int order
)
1257 struct snd_soc_component
*component
;
1258 struct snd_soc_rtdcom_list
*rtdcom
;
1260 for_each_rtdcom(rtd
, rtdcom
) {
1261 component
= rtdcom
->component
;
1263 if (component
->driver
->remove_order
== order
)
1264 soc_remove_component(component
);
1268 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1271 struct snd_soc_pcm_runtime
*rtd
;
1272 struct snd_soc_dai_link
*link
, *_link
;
1274 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1276 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1277 soc_remove_link_dais(card
, rtd
, order
);
1280 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1282 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1283 soc_remove_link_components(card
, rtd
, order
);
1286 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1287 if (link
->dobj
.type
== SND_SOC_DOBJ_DAI_LINK
)
1288 dev_warn(card
->dev
, "Topology forgot to remove link %s?\n",
1291 list_del(&link
->list
);
1292 card
->num_dai_links
--;
1296 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
1297 struct snd_soc_dai_link
*dai_link
)
1299 /* Legacy codec/codec_dai link is a single entry in multicodec */
1300 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
1301 dai_link
->codec_dai_name
) {
1302 dai_link
->num_codecs
= 1;
1304 dai_link
->codecs
= devm_kzalloc(card
->dev
,
1305 sizeof(struct snd_soc_dai_link_component
),
1307 if (!dai_link
->codecs
)
1310 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
1311 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
1312 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
1315 if (!dai_link
->codecs
) {
1316 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
1323 static int soc_init_dai_link(struct snd_soc_card
*card
,
1324 struct snd_soc_dai_link
*link
)
1328 ret
= snd_soc_init_multicodec(card
, link
);
1330 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
1334 for (i
= 0; i
< link
->num_codecs
; i
++) {
1336 * Codec must be specified by 1 of name or OF node,
1337 * not both or neither.
1339 if (!!link
->codecs
[i
].name
==
1340 !!link
->codecs
[i
].of_node
) {
1341 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
1345 /* Codec DAI name must be specified */
1346 if (!link
->codecs
[i
].dai_name
) {
1347 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
1354 * Platform may be specified by either name or OF node, but
1355 * can be left unspecified, and a dummy platform will be used.
1357 if (link
->platform_name
&& link
->platform_of_node
) {
1359 "ASoC: Both platform name/of_node are set for %s\n",
1365 * CPU device may be specified by either name or OF node, but
1366 * can be left unspecified, and will be matched based on DAI
1369 if (link
->cpu_name
&& link
->cpu_of_node
) {
1371 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1376 * At least one of CPU DAI name or CPU device name/node must be
1379 if (!link
->cpu_dai_name
&&
1380 !(link
->cpu_name
|| link
->cpu_of_node
)) {
1382 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1391 * snd_soc_add_dai_link - Add a DAI link dynamically
1392 * @card: The ASoC card to which the DAI link is added
1393 * @dai_link: The new DAI link to add
1395 * This function adds a DAI link to the ASoC card's link list.
1397 * Note: Topology can use this API to add DAI links when probing the
1398 * topology component. And machine drivers can still define static
1399 * DAI links in dai_link array.
1401 int snd_soc_add_dai_link(struct snd_soc_card
*card
,
1402 struct snd_soc_dai_link
*dai_link
)
1404 if (dai_link
->dobj
.type
1405 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1406 dev_err(card
->dev
, "Invalid dai link type %d\n",
1407 dai_link
->dobj
.type
);
1411 lockdep_assert_held(&client_mutex
);
1412 /* Notify the machine driver for extra initialization
1413 * on the link created by topology.
1415 if (dai_link
->dobj
.type
&& card
->add_dai_link
)
1416 card
->add_dai_link(card
, dai_link
);
1418 list_add_tail(&dai_link
->list
, &card
->dai_link_list
);
1419 card
->num_dai_links
++;
1423 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link
);
1426 * snd_soc_remove_dai_link - Remove a DAI link from the list
1427 * @card: The ASoC card that owns the link
1428 * @dai_link: The DAI link to remove
1430 * This function removes a DAI link from the ASoC card's link list.
1432 * For DAI links previously added by topology, topology should
1433 * remove them by using the dobj embedded in the link.
1435 void snd_soc_remove_dai_link(struct snd_soc_card
*card
,
1436 struct snd_soc_dai_link
*dai_link
)
1438 struct snd_soc_dai_link
*link
, *_link
;
1440 if (dai_link
->dobj
.type
1441 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1442 dev_err(card
->dev
, "Invalid dai link type %d\n",
1443 dai_link
->dobj
.type
);
1447 lockdep_assert_held(&client_mutex
);
1448 /* Notify the machine driver for extra destruction
1449 * on the link created by topology.
1451 if (dai_link
->dobj
.type
&& card
->remove_dai_link
)
1452 card
->remove_dai_link(card
, dai_link
);
1454 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1455 if (link
== dai_link
) {
1456 list_del(&link
->list
);
1457 card
->num_dai_links
--;
1462 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link
);
1464 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1465 struct snd_soc_component
*component
)
1469 if (card
->codec_conf
== NULL
)
1472 for (i
= 0; i
< card
->num_configs
; i
++) {
1473 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1474 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1476 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1478 component
->name_prefix
= map
->name_prefix
;
1483 static int soc_probe_component(struct snd_soc_card
*card
,
1484 struct snd_soc_component
*component
)
1486 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1487 struct snd_soc_dai
*dai
;
1490 if (!strcmp(component
->name
, "snd-soc-dummy"))
1493 if (component
->card
) {
1494 if (component
->card
!= card
) {
1495 dev_err(component
->dev
,
1496 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1497 card
->name
, component
->card
->name
);
1503 if (!try_module_get(component
->dev
->driver
->owner
))
1506 component
->card
= card
;
1508 soc_set_name_prefix(card
, component
);
1510 soc_init_component_debugfs(component
);
1512 if (component
->driver
->dapm_widgets
) {
1513 ret
= snd_soc_dapm_new_controls(dapm
,
1514 component
->driver
->dapm_widgets
,
1515 component
->driver
->num_dapm_widgets
);
1518 dev_err(component
->dev
,
1519 "Failed to create new controls %d\n", ret
);
1524 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1525 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1527 dev_err(component
->dev
,
1528 "Failed to create DAI widgets %d\n", ret
);
1533 if (component
->probe
) {
1534 ret
= component
->probe(component
);
1536 dev_err(component
->dev
,
1537 "ASoC: failed to probe component %d\n", ret
);
1541 WARN(dapm
->idle_bias_off
&&
1542 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1543 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1547 /* machine specific init */
1548 if (component
->init
) {
1549 ret
= component
->init(component
);
1551 dev_err(component
->dev
,
1552 "Failed to do machine specific init %d\n", ret
);
1557 if (component
->driver
->controls
)
1558 snd_soc_add_component_controls(component
,
1559 component
->driver
->controls
,
1560 component
->driver
->num_controls
);
1561 if (component
->driver
->dapm_routes
)
1562 snd_soc_dapm_add_routes(dapm
,
1563 component
->driver
->dapm_routes
,
1564 component
->driver
->num_dapm_routes
);
1566 list_add(&dapm
->list
, &card
->dapm_list
);
1567 list_add(&component
->card_list
, &card
->component_dev_list
);
1572 soc_cleanup_component_debugfs(component
);
1573 component
->card
= NULL
;
1574 module_put(component
->dev
->driver
->owner
);
1579 static void rtd_release(struct device
*dev
)
1584 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1589 /* register the rtd device */
1590 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1593 device_initialize(rtd
->dev
);
1594 rtd
->dev
->parent
= rtd
->card
->dev
;
1595 rtd
->dev
->release
= rtd_release
;
1596 rtd
->dev
->groups
= soc_dev_attr_groups
;
1597 dev_set_name(rtd
->dev
, "%s", name
);
1598 dev_set_drvdata(rtd
->dev
, rtd
);
1599 mutex_init(&rtd
->pcm_mutex
);
1600 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1601 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1602 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1603 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1604 ret
= device_add(rtd
->dev
);
1606 /* calling put_device() here to free the rtd->dev */
1607 put_device(rtd
->dev
);
1608 dev_err(rtd
->card
->dev
,
1609 "ASoC: failed to register runtime device: %d\n", ret
);
1612 rtd
->dev_registered
= 1;
1616 static int soc_probe_link_components(struct snd_soc_card
*card
,
1617 struct snd_soc_pcm_runtime
*rtd
,
1620 struct snd_soc_component
*component
;
1621 struct snd_soc_rtdcom_list
*rtdcom
;
1624 for_each_rtdcom(rtd
, rtdcom
) {
1625 component
= rtdcom
->component
;
1627 if (component
->driver
->probe_order
== order
) {
1628 ret
= soc_probe_component(card
, component
);
1637 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1641 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1642 if (dai
->driver
->probe
) {
1643 ret
= dai
->driver
->probe(dai
);
1646 "ASoC: failed to probe DAI %s: %d\n",
1658 static int soc_link_dai_pcm_new(struct snd_soc_dai
**dais
, int num_dais
,
1659 struct snd_soc_pcm_runtime
*rtd
)
1663 for (i
= 0; i
< num_dais
; ++i
) {
1664 struct snd_soc_dai_driver
*drv
= dais
[i
]->driver
;
1666 if (!rtd
->dai_link
->no_pcm
&& drv
->pcm_new
)
1667 ret
= drv
->pcm_new(rtd
, dais
[i
]);
1669 dev_err(dais
[i
]->dev
,
1670 "ASoC: Failed to bind %s with pcm device\n",
1679 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1680 struct snd_soc_dai_link
*dai_link
,
1681 struct snd_soc_pcm_runtime
*rtd
)
1683 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1684 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1685 struct snd_soc_dapm_widget
*sink
, *source
;
1688 if (rtd
->num_codecs
> 1)
1689 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1691 /* link the DAI widgets */
1692 sink
= codec_dai
->playback_widget
;
1693 source
= cpu_dai
->capture_widget
;
1694 if (sink
&& source
) {
1695 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1696 dai_link
->num_params
,
1699 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1700 sink
->name
, source
->name
, ret
);
1705 sink
= cpu_dai
->playback_widget
;
1706 source
= codec_dai
->capture_widget
;
1707 if (sink
&& source
) {
1708 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1709 dai_link
->num_params
,
1712 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1713 sink
->name
, source
->name
, ret
);
1721 static int soc_probe_link_dais(struct snd_soc_card
*card
,
1722 struct snd_soc_pcm_runtime
*rtd
, int order
)
1724 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
1725 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1728 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1729 card
->name
, rtd
->num
, order
);
1731 /* set default power off timeout */
1732 rtd
->pmdown_time
= pmdown_time
;
1734 ret
= soc_probe_dai(cpu_dai
, order
);
1738 /* probe the CODEC DAI */
1739 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1740 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1745 /* complete DAI probe during last probe */
1746 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1749 /* do machine specific initialization */
1750 if (dai_link
->init
) {
1751 ret
= dai_link
->init(rtd
);
1753 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1754 dai_link
->name
, ret
);
1759 if (dai_link
->dai_fmt
)
1760 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1762 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1766 #ifdef CONFIG_DEBUG_FS
1767 /* add DPCM sysfs entries */
1768 if (dai_link
->dynamic
)
1769 soc_dpcm_debugfs_add(rtd
);
1772 if (cpu_dai
->driver
->compress_new
) {
1773 /*create compress_device"*/
1774 ret
= cpu_dai
->driver
->compress_new(rtd
, rtd
->num
);
1776 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1777 dai_link
->stream_name
);
1782 if (!dai_link
->params
) {
1783 /* create the pcm */
1784 ret
= soc_new_pcm(rtd
, rtd
->num
);
1786 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1787 dai_link
->stream_name
, ret
);
1790 ret
= soc_link_dai_pcm_new(&cpu_dai
, 1, rtd
);
1793 ret
= soc_link_dai_pcm_new(rtd
->codec_dais
,
1794 rtd
->num_codecs
, rtd
);
1798 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1799 codec2codec_close_delayed_work
);
1801 /* link the DAI widgets */
1802 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1811 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1813 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1814 struct snd_soc_component
*component
;
1816 struct device_node
*codec_of_node
;
1818 if (aux_dev
->codec_of_node
|| aux_dev
->codec_name
) {
1819 /* codecs, usually analog devices */
1820 name
= aux_dev
->codec_name
;
1821 codec_of_node
= aux_dev
->codec_of_node
;
1822 component
= soc_find_component(codec_of_node
, name
);
1825 name
= of_node_full_name(codec_of_node
);
1828 } else if (aux_dev
->name
) {
1829 /* generic components */
1830 name
= aux_dev
->name
;
1831 component
= soc_find_component(NULL
, name
);
1835 dev_err(card
->dev
, "ASoC: Invalid auxiliary device\n");
1839 component
->init
= aux_dev
->init
;
1840 list_add(&component
->card_aux_list
, &card
->aux_comp_list
);
1845 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1846 return -EPROBE_DEFER
;
1849 static int soc_probe_aux_devices(struct snd_soc_card
*card
)
1851 struct snd_soc_component
*comp
;
1855 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1857 list_for_each_entry(comp
, &card
->aux_comp_list
, card_aux_list
) {
1858 if (comp
->driver
->probe_order
== order
) {
1859 ret
= soc_probe_component(card
, comp
);
1862 "ASoC: failed to probe aux component %s %d\n",
1873 static void soc_remove_aux_devices(struct snd_soc_card
*card
)
1875 struct snd_soc_component
*comp
, *_comp
;
1878 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1880 list_for_each_entry_safe(comp
, _comp
,
1881 &card
->aux_comp_list
, card_aux_list
) {
1883 if (comp
->driver
->remove_order
== order
) {
1884 soc_remove_component(comp
);
1885 /* remove it from the card's aux_comp_list */
1886 list_del(&comp
->card_aux_list
);
1892 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1896 if (codec
->cache_init
)
1899 ret
= snd_soc_cache_init(codec
);
1902 "ASoC: Failed to set cache compression type: %d\n",
1906 codec
->cache_init
= 1;
1911 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1912 * @rtd: The runtime for which the DAI link format should be changed
1913 * @dai_fmt: The new DAI link format
1915 * This function updates the DAI link format for all DAIs connected to the DAI
1916 * link for the specified runtime.
1918 * Note: For setups with a static format set the dai_fmt field in the
1919 * corresponding snd_dai_link struct instead of using this function.
1921 * Returns 0 on success, otherwise a negative error code.
1923 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1924 unsigned int dai_fmt
)
1926 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1927 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1931 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1932 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1934 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1935 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1936 dev_warn(codec_dai
->dev
,
1937 "ASoC: Failed to set DAI format: %d\n", ret
);
1942 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1943 if (cpu_dai
->codec
) {
1944 unsigned int inv_dai_fmt
;
1946 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1947 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1948 case SND_SOC_DAIFMT_CBM_CFM
:
1949 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1951 case SND_SOC_DAIFMT_CBM_CFS
:
1952 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1954 case SND_SOC_DAIFMT_CBS_CFM
:
1955 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1957 case SND_SOC_DAIFMT_CBS_CFS
:
1958 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1962 dai_fmt
= inv_dai_fmt
;
1965 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1966 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1967 dev_warn(cpu_dai
->dev
,
1968 "ASoC: Failed to set DAI format: %d\n", ret
);
1974 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1978 /* Trim special characters, and replace '-' with '_' since '-' is used to
1979 * separate different DMI fields in the card long name. Only number and
1980 * alphabet characters and a few separator characters are kept.
1982 static void cleanup_dmi_name(char *name
)
1986 for (i
= 0; name
[i
]; i
++) {
1987 if (isalnum(name
[i
]) || (name
[i
] == '.')
1988 || (name
[i
] == '_'))
1989 name
[j
++] = name
[i
];
1990 else if (name
[i
] == '-')
1997 /* Check if a DMI field is valid, i.e. not containing any string
1998 * in the black list.
2000 static int is_dmi_valid(const char *field
)
2004 while (dmi_blacklist
[i
]) {
2005 if (strstr(field
, dmi_blacklist
[i
]))
2014 * snd_soc_set_dmi_name() - Register DMI names to card
2015 * @card: The card to register DMI names
2016 * @flavour: The flavour "differentiator" for the card amongst its peers.
2018 * An Intel machine driver may be used by many different devices but are
2019 * difficult for userspace to differentiate, since machine drivers ususally
2020 * use their own name as the card short name and leave the card long name
2021 * blank. To differentiate such devices and fix bugs due to lack of
2022 * device-specific configurations, this function allows DMI info to be used
2023 * as the sound card long name, in the format of
2024 * "vendor-product-version-board"
2025 * (Character '-' is used to separate different DMI fields here).
2026 * This will help the user space to load the device-specific Use Case Manager
2027 * (UCM) configurations for the card.
2029 * Possible card long names may be:
2030 * DellInc.-XPS139343-01-0310JH
2031 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
2032 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
2034 * This function also supports flavoring the card longname to provide
2035 * the extra differentiation, like "vendor-product-version-board-flavor".
2037 * We only keep number and alphabet characters and a few separator characters
2038 * in the card long name since UCM in the user space uses the card long names
2039 * as card configuration directory names and AudoConf cannot support special
2040 * charactors like SPACE.
2042 * Returns 0 on success, otherwise a negative error code.
2044 int snd_soc_set_dmi_name(struct snd_soc_card
*card
, const char *flavour
)
2046 const char *vendor
, *product
, *product_version
, *board
;
2047 size_t longname_buf_size
= sizeof(card
->snd_card
->longname
);
2050 if (card
->long_name
)
2051 return 0; /* long name already set by driver or from DMI */
2053 /* make up dmi long name as: vendor.product.version.board */
2054 vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
2055 if (!vendor
|| !is_dmi_valid(vendor
)) {
2056 dev_warn(card
->dev
, "ASoC: no DMI vendor name!\n");
2061 snprintf(card
->dmi_longname
, sizeof(card
->snd_card
->longname
),
2063 cleanup_dmi_name(card
->dmi_longname
);
2065 product
= dmi_get_system_info(DMI_PRODUCT_NAME
);
2066 if (product
&& is_dmi_valid(product
)) {
2067 len
= strlen(card
->dmi_longname
);
2068 snprintf(card
->dmi_longname
+ len
,
2069 longname_buf_size
- len
,
2072 len
++; /* skip the separator "-" */
2073 if (len
< longname_buf_size
)
2074 cleanup_dmi_name(card
->dmi_longname
+ len
);
2076 /* some vendors like Lenovo may only put a self-explanatory
2077 * name in the product version field
2079 product_version
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
2080 if (product_version
&& is_dmi_valid(product_version
)) {
2081 len
= strlen(card
->dmi_longname
);
2082 snprintf(card
->dmi_longname
+ len
,
2083 longname_buf_size
- len
,
2084 "-%s", product_version
);
2087 if (len
< longname_buf_size
)
2088 cleanup_dmi_name(card
->dmi_longname
+ len
);
2092 board
= dmi_get_system_info(DMI_BOARD_NAME
);
2093 if (board
&& is_dmi_valid(board
)) {
2094 len
= strlen(card
->dmi_longname
);
2095 snprintf(card
->dmi_longname
+ len
,
2096 longname_buf_size
- len
,
2100 if (len
< longname_buf_size
)
2101 cleanup_dmi_name(card
->dmi_longname
+ len
);
2102 } else if (!product
) {
2103 /* fall back to using legacy name */
2104 dev_warn(card
->dev
, "ASoC: no DMI board/product name!\n");
2108 /* Add flavour to dmi long name */
2110 len
= strlen(card
->dmi_longname
);
2111 snprintf(card
->dmi_longname
+ len
,
2112 longname_buf_size
- len
,
2116 if (len
< longname_buf_size
)
2117 cleanup_dmi_name(card
->dmi_longname
+ len
);
2120 /* set the card long name */
2121 card
->long_name
= card
->dmi_longname
;
2125 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name
);
2126 #endif /* CONFIG_DMI */
2128 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
2130 struct snd_soc_codec
*codec
;
2131 struct snd_soc_pcm_runtime
*rtd
;
2132 struct snd_soc_dai_link
*dai_link
;
2135 mutex_lock(&client_mutex
);
2136 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
2139 for (i
= 0; i
< card
->num_links
; i
++) {
2140 ret
= soc_bind_dai_link(card
, &card
->dai_link
[i
]);
2145 /* bind aux_devs too */
2146 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
2147 ret
= soc_bind_aux_dev(card
, i
);
2152 /* add predefined DAI links to the list */
2153 for (i
= 0; i
< card
->num_links
; i
++)
2154 snd_soc_add_dai_link(card
, card
->dai_link
+i
);
2156 /* initialize the register cache for each available codec */
2157 list_for_each_entry(codec
, &codec_list
, list
) {
2158 if (codec
->cache_init
)
2160 ret
= snd_soc_init_codec_cache(codec
);
2165 /* card bind complete so register a sound card */
2166 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
2167 card
->owner
, 0, &card
->snd_card
);
2170 "ASoC: can't create sound card for card %s: %d\n",
2175 soc_init_card_debugfs(card
);
2177 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
2178 card
->dapm
.dev
= card
->dev
;
2179 card
->dapm
.card
= card
;
2180 list_add(&card
->dapm
.list
, &card
->dapm_list
);
2182 #ifdef CONFIG_DEBUG_FS
2183 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
2186 #ifdef CONFIG_PM_SLEEP
2187 /* deferred resume work */
2188 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
2191 if (card
->dapm_widgets
)
2192 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
2193 card
->num_dapm_widgets
);
2195 if (card
->of_dapm_widgets
)
2196 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
2197 card
->num_of_dapm_widgets
);
2199 /* initialise the sound card only once */
2201 ret
= card
->probe(card
);
2203 goto card_probe_error
;
2206 /* probe all components used by DAI links on this card */
2207 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2209 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2210 ret
= soc_probe_link_components(card
, rtd
, order
);
2213 "ASoC: failed to instantiate card %d\n",
2220 /* probe auxiliary components */
2221 ret
= soc_probe_aux_devices(card
);
2225 /* Find new DAI links added during probing components and bind them.
2226 * Components with topology may bring new DAIs and DAI links.
2228 list_for_each_entry(dai_link
, &card
->dai_link_list
, list
) {
2229 if (soc_is_dai_link_bound(card
, dai_link
))
2232 ret
= soc_init_dai_link(card
, dai_link
);
2235 ret
= soc_bind_dai_link(card
, dai_link
);
2240 /* probe all DAI links on this card */
2241 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2243 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2244 ret
= soc_probe_link_dais(card
, rtd
, order
);
2247 "ASoC: failed to instantiate card %d\n",
2254 snd_soc_dapm_link_dai_widgets(card
);
2255 snd_soc_dapm_connect_dai_link_widgets(card
);
2258 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
2260 if (card
->dapm_routes
)
2261 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
2262 card
->num_dapm_routes
);
2264 if (card
->of_dapm_routes
)
2265 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
2266 card
->num_of_dapm_routes
);
2268 /* try to set some sane longname if DMI is available */
2269 snd_soc_set_dmi_name(card
, NULL
);
2271 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
2273 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
2274 "%s", card
->long_name
? card
->long_name
: card
->name
);
2275 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
2276 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
2277 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
2278 switch (card
->snd_card
->driver
[i
]) {
2284 if (!isalnum(card
->snd_card
->driver
[i
]))
2285 card
->snd_card
->driver
[i
] = '_';
2290 if (card
->late_probe
) {
2291 ret
= card
->late_probe(card
);
2293 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
2295 goto probe_aux_dev_err
;
2299 snd_soc_dapm_new_widgets(card
);
2301 ret
= snd_card_register(card
->snd_card
);
2303 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
2305 goto probe_aux_dev_err
;
2308 card
->instantiated
= 1;
2309 snd_soc_dapm_sync(&card
->dapm
);
2310 mutex_unlock(&card
->mutex
);
2311 mutex_unlock(&client_mutex
);
2316 soc_remove_aux_devices(card
);
2319 soc_remove_dai_links(card
);
2325 snd_soc_dapm_free(&card
->dapm
);
2326 soc_cleanup_card_debugfs(card
);
2327 snd_card_free(card
->snd_card
);
2330 soc_remove_pcm_runtimes(card
);
2331 mutex_unlock(&card
->mutex
);
2332 mutex_unlock(&client_mutex
);
2337 /* probes a new socdev */
2338 static int soc_probe(struct platform_device
*pdev
)
2340 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2343 * no card, so machine driver should be registering card
2344 * we should not be here in that case so ret error
2349 dev_warn(&pdev
->dev
,
2350 "ASoC: machine %s should use snd_soc_register_card()\n",
2353 /* Bodge while we unpick instantiation */
2354 card
->dev
= &pdev
->dev
;
2356 return snd_soc_register_card(card
);
2359 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2361 struct snd_soc_pcm_runtime
*rtd
;
2363 /* make sure any delayed work runs */
2364 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2365 flush_delayed_work(&rtd
->delayed_work
);
2367 /* free the ALSA card at first; this syncs with pending operations */
2368 snd_card_free(card
->snd_card
);
2370 /* remove and free each DAI */
2371 soc_remove_dai_links(card
);
2372 soc_remove_pcm_runtimes(card
);
2374 /* remove auxiliary devices */
2375 soc_remove_aux_devices(card
);
2377 snd_soc_dapm_free(&card
->dapm
);
2378 soc_cleanup_card_debugfs(card
);
2380 /* remove the card */
2387 /* removes a socdev */
2388 static int soc_remove(struct platform_device
*pdev
)
2390 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2392 snd_soc_unregister_card(card
);
2396 int snd_soc_poweroff(struct device
*dev
)
2398 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2399 struct snd_soc_pcm_runtime
*rtd
;
2401 if (!card
->instantiated
)
2404 /* Flush out pmdown_time work - we actually do want to run it
2405 * now, we're shutting down so no imminent restart. */
2406 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2407 flush_delayed_work(&rtd
->delayed_work
);
2409 snd_soc_dapm_shutdown(card
);
2411 /* deactivate pins to sleep state */
2412 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2413 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2416 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2417 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2418 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
2419 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2425 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2427 const struct dev_pm_ops snd_soc_pm_ops
= {
2428 .suspend
= snd_soc_suspend
,
2429 .resume
= snd_soc_resume
,
2430 .freeze
= snd_soc_suspend
,
2431 .thaw
= snd_soc_resume
,
2432 .poweroff
= snd_soc_poweroff
,
2433 .restore
= snd_soc_resume
,
2435 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2437 /* ASoC platform driver */
2438 static struct platform_driver soc_driver
= {
2440 .name
= "soc-audio",
2441 .pm
= &snd_soc_pm_ops
,
2444 .remove
= soc_remove
,
2448 * snd_soc_cnew - create new control
2449 * @_template: control template
2450 * @data: control private data
2451 * @long_name: control long name
2452 * @prefix: control name prefix
2454 * Create a new mixer control from a template control.
2456 * Returns 0 for success, else error.
2458 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2459 void *data
, const char *long_name
,
2462 struct snd_kcontrol_new
template;
2463 struct snd_kcontrol
*kcontrol
;
2466 memcpy(&template, _template
, sizeof(template));
2470 long_name
= template.name
;
2473 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2477 template.name
= name
;
2479 template.name
= long_name
;
2482 kcontrol
= snd_ctl_new1(&template, data
);
2488 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2490 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2491 const struct snd_kcontrol_new
*controls
, int num_controls
,
2492 const char *prefix
, void *data
)
2496 for (i
= 0; i
< num_controls
; i
++) {
2497 const struct snd_kcontrol_new
*control
= &controls
[i
];
2498 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2499 control
->name
, prefix
));
2501 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2502 control
->name
, err
);
2510 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2513 struct snd_card
*card
= soc_card
->snd_card
;
2514 struct snd_kcontrol
*kctl
;
2516 if (unlikely(!name
))
2519 list_for_each_entry(kctl
, &card
->controls
, list
)
2520 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2524 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2527 * snd_soc_add_component_controls - Add an array of controls to a component.
2529 * @component: Component to add controls to
2530 * @controls: Array of controls to add
2531 * @num_controls: Number of elements in the array
2533 * Return: 0 for success, else error.
2535 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2536 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2538 struct snd_card
*card
= component
->card
->snd_card
;
2540 return snd_soc_add_controls(card
, component
->dev
, controls
,
2541 num_controls
, component
->name_prefix
, component
);
2543 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2546 * snd_soc_add_codec_controls - add an array of controls to a codec.
2547 * Convenience function to add a list of controls. Many codecs were
2548 * duplicating this code.
2550 * @codec: codec to add controls to
2551 * @controls: array of controls to add
2552 * @num_controls: number of elements in the array
2554 * Return 0 for success, else error.
2556 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2557 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2559 return snd_soc_add_component_controls(&codec
->component
, controls
,
2562 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2565 * snd_soc_add_platform_controls - add an array of controls to a platform.
2566 * Convenience function to add a list of controls.
2568 * @platform: platform to add controls to
2569 * @controls: array of controls to add
2570 * @num_controls: number of elements in the array
2572 * Return 0 for success, else error.
2574 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2575 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2577 return snd_soc_add_component_controls(&platform
->component
, controls
,
2580 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2583 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2584 * Convenience function to add a list of controls.
2586 * @soc_card: SoC card to add controls to
2587 * @controls: array of controls to add
2588 * @num_controls: number of elements in the array
2590 * Return 0 for success, else error.
2592 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2593 const struct snd_kcontrol_new
*controls
, int num_controls
)
2595 struct snd_card
*card
= soc_card
->snd_card
;
2597 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2600 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2603 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2604 * Convienience function to add a list of controls.
2606 * @dai: DAI to add controls to
2607 * @controls: array of controls to add
2608 * @num_controls: number of elements in the array
2610 * Return 0 for success, else error.
2612 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2613 const struct snd_kcontrol_new
*controls
, int num_controls
)
2615 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2617 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2620 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2623 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2625 * @clk_id: DAI specific clock ID
2626 * @freq: new clock frequency in Hz
2627 * @dir: new clock direction - input/output.
2629 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2631 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2632 unsigned int freq
, int dir
)
2634 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2635 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2637 return snd_soc_component_set_sysclk(dai
->component
, clk_id
, 0,
2640 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2643 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2645 * @clk_id: DAI specific clock ID
2646 * @source: Source for the clock
2647 * @freq: new clock frequency in Hz
2648 * @dir: new clock direction - input/output.
2650 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2652 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2653 int source
, unsigned int freq
, int dir
)
2655 if (codec
->driver
->set_sysclk
)
2656 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2661 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2664 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2665 * @component: COMPONENT
2666 * @clk_id: DAI specific clock ID
2667 * @source: Source for the clock
2668 * @freq: new clock frequency in Hz
2669 * @dir: new clock direction - input/output.
2671 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2673 int snd_soc_component_set_sysclk(struct snd_soc_component
*component
, int clk_id
,
2674 int source
, unsigned int freq
, int dir
)
2676 /* will be removed */
2677 if (component
->set_sysclk
)
2678 return component
->set_sysclk(component
, clk_id
, source
,
2681 if (component
->driver
->set_sysclk
)
2682 return component
->driver
->set_sysclk(component
, clk_id
, source
,
2687 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk
);
2690 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2692 * @div_id: DAI specific clock divider ID
2693 * @div: new clock divisor.
2695 * Configures the clock dividers. This is used to derive the best DAI bit and
2696 * frame clocks from the system or master clock. It's best to set the DAI bit
2697 * and frame clocks as low as possible to save system power.
2699 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2700 int div_id
, int div
)
2702 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2703 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2707 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2710 * snd_soc_dai_set_pll - configure DAI PLL.
2712 * @pll_id: DAI specific PLL ID
2713 * @source: DAI specific source for the PLL
2714 * @freq_in: PLL input clock frequency in Hz
2715 * @freq_out: requested PLL output clock frequency in Hz
2717 * Configures and enables PLL to generate output clock based on input clock.
2719 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2720 unsigned int freq_in
, unsigned int freq_out
)
2722 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2723 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2726 return snd_soc_component_set_pll(dai
->component
, pll_id
, source
,
2729 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2732 * snd_soc_codec_set_pll - configure codec PLL.
2734 * @pll_id: DAI specific PLL ID
2735 * @source: DAI specific source for the PLL
2736 * @freq_in: PLL input clock frequency in Hz
2737 * @freq_out: requested PLL output clock frequency in Hz
2739 * Configures and enables PLL to generate output clock based on input clock.
2741 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2742 unsigned int freq_in
, unsigned int freq_out
)
2744 if (codec
->driver
->set_pll
)
2745 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2750 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2753 * snd_soc_component_set_pll - configure component PLL.
2754 * @component: COMPONENT
2755 * @pll_id: DAI specific PLL ID
2756 * @source: DAI specific source for the PLL
2757 * @freq_in: PLL input clock frequency in Hz
2758 * @freq_out: requested PLL output clock frequency in Hz
2760 * Configures and enables PLL to generate output clock based on input clock.
2762 int snd_soc_component_set_pll(struct snd_soc_component
*component
, int pll_id
,
2763 int source
, unsigned int freq_in
,
2764 unsigned int freq_out
)
2766 /* will be removed */
2767 if (component
->set_pll
)
2768 return component
->set_pll(component
, pll_id
, source
,
2771 if (component
->driver
->set_pll
)
2772 return component
->driver
->set_pll(component
, pll_id
, source
,
2777 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll
);
2780 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2782 * @ratio: Ratio of BCLK to Sample rate.
2784 * Configures the DAI for a preset BCLK to sample rate ratio.
2786 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2788 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2789 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2793 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2796 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2798 * @fmt: SND_SOC_DAIFMT_ format value.
2800 * Configures the DAI hardware format and clocking.
2802 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2804 if (dai
->driver
== NULL
)
2806 if (dai
->driver
->ops
->set_fmt
== NULL
)
2808 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2810 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2813 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2814 * @slots: Number of slots in use.
2815 * @tx_mask: bitmask representing active TX slots.
2816 * @rx_mask: bitmask representing active RX slots.
2818 * Generates the TDM tx and rx slot default masks for DAI.
2820 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2821 unsigned int *tx_mask
,
2822 unsigned int *rx_mask
)
2824 if (*tx_mask
|| *rx_mask
)
2830 *tx_mask
= (1 << slots
) - 1;
2831 *rx_mask
= (1 << slots
) - 1;
2837 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2838 * @dai: The DAI to configure
2839 * @tx_mask: bitmask representing active TX slots.
2840 * @rx_mask: bitmask representing active RX slots.
2841 * @slots: Number of slots in use.
2842 * @slot_width: Width in bits for each slot.
2844 * This function configures the specified DAI for TDM operation. @slot contains
2845 * the total number of slots of the TDM stream and @slot_with the width of each
2846 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2847 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2848 * DAI should write to or read from. If a bit is set the corresponding slot is
2849 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2850 * the first slot, bit 1 to the second slot and so on. The first active slot
2851 * maps to the first channel of the DAI, the second active slot to the second
2852 * channel and so on.
2854 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2855 * @rx_mask and @slot_width will be ignored.
2857 * Returns 0 on success, a negative error code otherwise.
2859 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2860 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2862 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2863 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2864 &tx_mask
, &rx_mask
);
2866 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2868 dai
->tx_mask
= tx_mask
;
2869 dai
->rx_mask
= rx_mask
;
2871 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2872 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2877 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2880 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2882 * @tx_num: how many TX channels
2883 * @tx_slot: pointer to an array which imply the TX slot number channel
2885 * @rx_num: how many RX channels
2886 * @rx_slot: pointer to an array which imply the RX slot number channel
2889 * configure the relationship between channel number and TDM slot number.
2891 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2892 unsigned int tx_num
, unsigned int *tx_slot
,
2893 unsigned int rx_num
, unsigned int *rx_slot
)
2895 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2896 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2901 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2904 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2906 * @tristate: tristate enable
2908 * Tristates the DAI so that others can use it.
2910 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2912 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2913 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2917 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2920 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2922 * @mute: mute enable
2923 * @direction: stream to mute
2925 * Mutes the DAI DAC.
2927 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2933 if (dai
->driver
->ops
->mute_stream
)
2934 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2935 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2936 dai
->driver
->ops
->digital_mute
)
2937 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2941 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2944 * snd_soc_register_card - Register a card with the ASoC core
2946 * @card: Card to register
2949 int snd_soc_register_card(struct snd_soc_card
*card
)
2952 struct snd_soc_pcm_runtime
*rtd
;
2954 if (!card
->name
|| !card
->dev
)
2957 for (i
= 0; i
< card
->num_links
; i
++) {
2958 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2960 ret
= soc_init_dai_link(card
, link
);
2962 dev_err(card
->dev
, "ASoC: failed to init link %s\n",
2968 dev_set_drvdata(card
->dev
, card
);
2970 snd_soc_initialize_card_lists(card
);
2972 INIT_LIST_HEAD(&card
->dai_link_list
);
2973 card
->num_dai_links
= 0;
2975 INIT_LIST_HEAD(&card
->rtd_list
);
2978 INIT_LIST_HEAD(&card
->dapm_dirty
);
2979 INIT_LIST_HEAD(&card
->dobj_list
);
2980 card
->instantiated
= 0;
2981 mutex_init(&card
->mutex
);
2982 mutex_init(&card
->dapm_mutex
);
2984 ret
= snd_soc_instantiate_card(card
);
2988 /* deactivate pins to sleep state */
2989 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2990 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2993 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2994 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2995 if (!codec_dai
->active
)
2996 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2999 if (!cpu_dai
->active
)
3000 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
3005 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3008 * snd_soc_unregister_card - Unregister a card with the ASoC core
3010 * @card: Card to unregister
3013 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3015 if (card
->instantiated
) {
3016 card
->instantiated
= false;
3017 snd_soc_dapm_shutdown(card
);
3018 soc_cleanup_card_resources(card
);
3019 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3024 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3027 * Simplify DAI link configuration by removing ".-1" from device names
3028 * and sanitizing names.
3030 static char *fmt_single_name(struct device
*dev
, int *id
)
3032 char *found
, name
[NAME_SIZE
];
3035 if (dev_name(dev
) == NULL
)
3038 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3040 /* are we a "%s.%d" name (platform and SPI components) */
3041 found
= strstr(name
, dev
->driver
->name
);
3044 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3046 /* discard ID from name if ID == -1 */
3048 found
[strlen(dev
->driver
->name
)] = '\0';
3052 /* I2C component devices are named "bus-addr" */
3053 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3054 char tmp
[NAME_SIZE
];
3056 /* create unique ID number from I2C addr and bus */
3057 *id
= ((id1
& 0xffff) << 16) + id2
;
3059 /* sanitize component name for DAI link creation */
3060 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3061 strlcpy(name
, tmp
, NAME_SIZE
);
3066 return kstrdup(name
, GFP_KERNEL
);
3070 * Simplify DAI link naming for single devices with multiple DAIs by removing
3071 * any ".-1" and using the DAI name (instead of device name).
3073 static inline char *fmt_multiple_name(struct device
*dev
,
3074 struct snd_soc_dai_driver
*dai_drv
)
3076 if (dai_drv
->name
== NULL
) {
3078 "ASoC: error - multiple DAI %s registered with no name\n",
3083 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3087 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3089 * @component: The component for which the DAIs should be unregistered
3091 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
3093 struct snd_soc_dai
*dai
, *_dai
;
3095 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3096 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3098 list_del(&dai
->list
);
3104 /* Create a DAI and add it to the component's DAI list */
3105 static struct snd_soc_dai
*soc_add_dai(struct snd_soc_component
*component
,
3106 struct snd_soc_dai_driver
*dai_drv
,
3107 bool legacy_dai_naming
)
3109 struct device
*dev
= component
->dev
;
3110 struct snd_soc_dai
*dai
;
3112 dev_dbg(dev
, "ASoC: dynamically register DAI %s\n", dev_name(dev
));
3114 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3119 * Back in the old days when we still had component-less DAIs,
3120 * instead of having a static name, component-less DAIs would
3121 * inherit the name of the parent device so it is possible to
3122 * register multiple instances of the DAI. We still need to keep
3123 * the same naming style even though those DAIs are not
3124 * component-less anymore.
3126 if (legacy_dai_naming
&&
3127 (dai_drv
->id
== 0 || dai_drv
->name
== NULL
)) {
3128 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3130 dai
->name
= fmt_multiple_name(dev
, dai_drv
);
3132 dai
->id
= dai_drv
->id
;
3134 dai
->id
= component
->num_dai
;
3136 if (dai
->name
== NULL
) {
3141 dai
->component
= component
;
3143 dai
->driver
= dai_drv
;
3144 if (!dai
->driver
->ops
)
3145 dai
->driver
->ops
= &null_dai_ops
;
3147 list_add(&dai
->list
, &component
->dai_list
);
3148 component
->num_dai
++;
3150 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3155 * snd_soc_register_dais - Register a DAI with the ASoC core
3157 * @component: The component the DAIs are registered for
3158 * @dai_drv: DAI driver to use for the DAIs
3159 * @count: Number of DAIs
3160 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3163 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3164 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
3165 bool legacy_dai_naming
)
3167 struct device
*dev
= component
->dev
;
3168 struct snd_soc_dai
*dai
;
3172 dev_dbg(dev
, "ASoC: dai register %s #%zu\n", dev_name(dev
), count
);
3174 component
->dai_drv
= dai_drv
;
3176 for (i
= 0; i
< count
; i
++) {
3178 dai
= soc_add_dai(component
, dai_drv
+ i
,
3179 count
== 1 && legacy_dai_naming
);
3189 snd_soc_unregister_dais(component
);
3195 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3197 * @component: The component the DAIs are registered for
3198 * @dai_drv: DAI driver to use for the DAI
3200 * Topology can use this API to register DAIs when probing a component.
3201 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3202 * will be freed in the component cleanup.
3204 int snd_soc_register_dai(struct snd_soc_component
*component
,
3205 struct snd_soc_dai_driver
*dai_drv
)
3207 struct snd_soc_dapm_context
*dapm
=
3208 snd_soc_component_get_dapm(component
);
3209 struct snd_soc_dai
*dai
;
3212 if (dai_drv
->dobj
.type
!= SND_SOC_DOBJ_PCM
) {
3213 dev_err(component
->dev
, "Invalid dai type %d\n",
3214 dai_drv
->dobj
.type
);
3218 lockdep_assert_held(&client_mutex
);
3219 dai
= soc_add_dai(component
, dai_drv
, false);
3223 /* Create the DAI widgets here. After adding DAIs, topology may
3224 * also add routes that need these widgets as source or sink.
3226 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
3228 dev_err(component
->dev
,
3229 "Failed to create DAI widgets %d\n", ret
);
3234 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3236 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
3237 enum snd_soc_dapm_type type
, int subseq
)
3239 struct snd_soc_component
*component
= dapm
->component
;
3241 component
->driver
->seq_notifier(component
, type
, subseq
);
3244 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
3247 struct snd_soc_component
*component
= dapm
->component
;
3249 return component
->driver
->stream_event(component
, event
);
3252 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
3253 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
3255 struct snd_soc_dapm_context
*dapm
;
3257 component
->name
= fmt_single_name(dev
, &component
->id
);
3258 if (!component
->name
) {
3259 dev_err(dev
, "ASoC: Failed to allocate name\n");
3263 component
->dev
= dev
;
3264 component
->driver
= driver
;
3265 component
->probe
= component
->driver
->probe
;
3266 component
->remove
= component
->driver
->remove
;
3267 component
->suspend
= component
->driver
->suspend
;
3268 component
->resume
= component
->driver
->resume
;
3269 component
->set_sysclk
= component
->driver
->set_sysclk
;
3270 component
->set_pll
= component
->driver
->set_pll
;
3271 component
->set_jack
= component
->driver
->set_jack
;
3273 dapm
= snd_soc_component_get_dapm(component
);
3275 dapm
->component
= component
;
3276 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
3277 dapm
->idle_bias_off
= true;
3278 if (driver
->seq_notifier
)
3279 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
3280 if (driver
->stream_event
)
3281 dapm
->stream_event
= snd_soc_component_stream_event
;
3283 INIT_LIST_HEAD(&component
->dai_list
);
3284 mutex_init(&component
->io_mutex
);
3289 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
3291 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
3293 /* Errors are legitimate for non-integer byte multiples */
3295 component
->val_bytes
= val_bytes
;
3298 #ifdef CONFIG_REGMAP
3301 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3302 * @component: The component for which to initialize the regmap instance
3303 * @regmap: The regmap instance that should be used by the component
3305 * This function allows deferred assignment of the regmap instance that is
3306 * associated with the component. Only use this if the regmap instance is not
3307 * yet ready when the component is registered. The function must also be called
3308 * before the first IO attempt of the component.
3310 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
3311 struct regmap
*regmap
)
3313 component
->regmap
= regmap
;
3314 snd_soc_component_setup_regmap(component
);
3316 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
3319 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3320 * @component: The component for which to de-initialize the regmap instance
3322 * Calls regmap_exit() on the regmap instance associated to the component and
3323 * removes the regmap instance from the component.
3325 * This function should only be used if snd_soc_component_init_regmap() was used
3326 * to initialize the regmap instance.
3328 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
3330 regmap_exit(component
->regmap
);
3331 component
->regmap
= NULL
;
3333 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
3337 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
3339 if (!component
->write
&& !component
->read
) {
3340 if (!component
->regmap
)
3341 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
3342 if (component
->regmap
)
3343 snd_soc_component_setup_regmap(component
);
3346 list_add(&component
->list
, &component_list
);
3347 INIT_LIST_HEAD(&component
->dobj_list
);
3350 static void snd_soc_component_add(struct snd_soc_component
*component
)
3352 mutex_lock(&client_mutex
);
3353 snd_soc_component_add_unlocked(component
);
3354 mutex_unlock(&client_mutex
);
3357 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
3359 snd_soc_unregister_dais(component
);
3360 kfree(component
->name
);
3363 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
3365 struct snd_soc_card
*card
= component
->card
;
3368 snd_soc_unregister_card(card
);
3370 list_del(&component
->list
);
3373 int snd_soc_register_component(struct device
*dev
,
3374 const struct snd_soc_component_driver
*component_driver
,
3375 struct snd_soc_dai_driver
*dai_drv
,
3378 struct snd_soc_component
*component
;
3381 component
= kzalloc(sizeof(*component
), GFP_KERNEL
);
3383 dev_err(dev
, "ASoC: Failed to allocate memory\n");
3387 ret
= snd_soc_component_initialize(component
, component_driver
, dev
);
3391 component
->ignore_pmdown_time
= true;
3392 component
->registered_as_component
= true;
3394 ret
= snd_soc_register_dais(component
, dai_drv
, num_dai
, true);
3396 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3400 snd_soc_component_add(component
);
3405 snd_soc_component_cleanup(component
);
3410 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
3413 * snd_soc_unregister_component - Unregister all related component
3414 * from the ASoC core
3416 * @dev: The device to unregister
3418 static int __snd_soc_unregister_component(struct device
*dev
)
3420 struct snd_soc_component
*component
;
3423 mutex_lock(&client_mutex
);
3424 list_for_each_entry(component
, &component_list
, list
) {
3425 if (dev
!= component
->dev
||
3426 !component
->registered_as_component
)
3429 snd_soc_tplg_component_remove(component
, SND_SOC_TPLG_INDEX_ALL
);
3430 snd_soc_component_del_unlocked(component
);
3434 mutex_unlock(&client_mutex
);
3437 snd_soc_component_cleanup(component
);
3444 void snd_soc_unregister_component(struct device
*dev
)
3446 while (__snd_soc_unregister_component(dev
));
3448 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
3450 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
3452 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3454 return platform
->driver
->probe(platform
);
3457 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
3459 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3461 platform
->driver
->remove(platform
);
3465 * snd_soc_add_platform - Add a platform to the ASoC core
3466 * @dev: The parent device for the platform
3467 * @platform: The platform to add
3468 * @platform_drv: The driver for the platform
3470 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3471 const struct snd_soc_platform_driver
*platform_drv
)
3475 ret
= snd_soc_component_initialize(&platform
->component
,
3476 &platform_drv
->component_driver
, dev
);
3480 platform
->dev
= dev
;
3481 platform
->driver
= platform_drv
;
3483 if (platform_drv
->probe
)
3484 platform
->component
.probe
= snd_soc_platform_drv_probe
;
3485 if (platform_drv
->remove
)
3486 platform
->component
.remove
= snd_soc_platform_drv_remove
;
3488 #ifdef CONFIG_DEBUG_FS
3489 platform
->component
.debugfs_prefix
= "platform";
3492 mutex_lock(&client_mutex
);
3493 snd_soc_component_add_unlocked(&platform
->component
);
3494 list_add(&platform
->list
, &platform_list
);
3495 mutex_unlock(&client_mutex
);
3497 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
3498 platform
->component
.name
);
3502 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3505 * snd_soc_register_platform - Register a platform with the ASoC core
3507 * @dev: The device for the platform
3508 * @platform_drv: The driver for the platform
3510 int snd_soc_register_platform(struct device
*dev
,
3511 const struct snd_soc_platform_driver
*platform_drv
)
3513 struct snd_soc_platform
*platform
;
3516 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3518 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3519 if (platform
== NULL
)
3522 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3528 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3531 * snd_soc_remove_platform - Remove a platform from the ASoC core
3532 * @platform: the platform to remove
3534 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
3537 mutex_lock(&client_mutex
);
3538 list_del(&platform
->list
);
3539 snd_soc_component_del_unlocked(&platform
->component
);
3540 mutex_unlock(&client_mutex
);
3542 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
3543 platform
->component
.name
);
3545 snd_soc_component_cleanup(&platform
->component
);
3547 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
3549 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
3551 struct snd_soc_platform
*platform
;
3553 mutex_lock(&client_mutex
);
3554 list_for_each_entry(platform
, &platform_list
, list
) {
3555 if (dev
== platform
->dev
) {
3556 mutex_unlock(&client_mutex
);
3560 mutex_unlock(&client_mutex
);
3564 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
3567 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3569 * @dev: platform to unregister
3571 void snd_soc_unregister_platform(struct device
*dev
)
3573 struct snd_soc_platform
*platform
;
3575 platform
= snd_soc_lookup_platform(dev
);
3579 snd_soc_remove_platform(platform
);
3582 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3584 static u64 codec_format_map
[] = {
3585 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3586 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3587 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3588 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3589 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3590 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3591 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3592 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3593 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3594 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3595 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3596 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3597 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3598 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3599 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3600 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3603 /* Fix up the DAI formats for endianness: codecs don't actually see
3604 * the endianness of the data but we're using the CPU format
3605 * definitions which do need to include endianness so we ensure that
3606 * codec DAIs always have both big and little endian variants set.
3608 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3612 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3613 if (stream
->formats
& codec_format_map
[i
])
3614 stream
->formats
|= codec_format_map
[i
];
3617 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
3619 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3621 return codec
->driver
->probe(codec
);
3624 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
3626 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3628 codec
->driver
->remove(codec
);
3631 static int snd_soc_codec_drv_suspend(struct snd_soc_component
*component
)
3633 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3635 return codec
->driver
->suspend(codec
);
3638 static int snd_soc_codec_drv_resume(struct snd_soc_component
*component
)
3640 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3642 return codec
->driver
->resume(codec
);
3645 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3646 unsigned int reg
, unsigned int val
)
3648 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3650 return codec
->driver
->write(codec
, reg
, val
);
3653 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3654 unsigned int reg
, unsigned int *val
)
3656 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3658 *val
= codec
->driver
->read(codec
, reg
);
3663 static int snd_soc_codec_set_sysclk_(struct snd_soc_component
*component
,
3664 int clk_id
, int source
, unsigned int freq
, int dir
)
3666 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3668 return snd_soc_codec_set_sysclk(codec
, clk_id
, source
, freq
, dir
);
3671 static int snd_soc_codec_set_pll_(struct snd_soc_component
*component
,
3672 int pll_id
, int source
, unsigned int freq_in
,
3673 unsigned int freq_out
)
3675 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3677 return snd_soc_codec_set_pll(codec
, pll_id
, source
, freq_in
, freq_out
);
3680 static int snd_soc_codec_set_jack_(struct snd_soc_component
*component
,
3681 struct snd_soc_jack
*jack
, void *data
)
3683 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3685 return snd_soc_codec_set_jack(codec
, jack
, data
);
3688 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3689 enum snd_soc_bias_level level
)
3691 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3693 return codec
->driver
->set_bias_level(codec
, level
);
3697 * snd_soc_register_codec - Register a codec with the ASoC core
3699 * @dev: The parent device for this codec
3700 * @codec_drv: Codec driver
3701 * @dai_drv: The associated DAI driver
3702 * @num_dai: Number of DAIs
3704 int snd_soc_register_codec(struct device
*dev
,
3705 const struct snd_soc_codec_driver
*codec_drv
,
3706 struct snd_soc_dai_driver
*dai_drv
,
3709 struct snd_soc_dapm_context
*dapm
;
3710 struct snd_soc_codec
*codec
;
3711 struct snd_soc_dai
*dai
;
3714 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3716 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3720 codec
->component
.codec
= codec
;
3722 ret
= snd_soc_component_initialize(&codec
->component
,
3723 &codec_drv
->component_driver
, dev
);
3727 if (codec_drv
->probe
)
3728 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3729 if (codec_drv
->remove
)
3730 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3731 if (codec_drv
->suspend
)
3732 codec
->component
.suspend
= snd_soc_codec_drv_suspend
;
3733 if (codec_drv
->resume
)
3734 codec
->component
.resume
= snd_soc_codec_drv_resume
;
3735 if (codec_drv
->write
)
3736 codec
->component
.write
= snd_soc_codec_drv_write
;
3737 if (codec_drv
->read
)
3738 codec
->component
.read
= snd_soc_codec_drv_read
;
3739 if (codec_drv
->set_sysclk
)
3740 codec
->component
.set_sysclk
= snd_soc_codec_set_sysclk_
;
3741 if (codec_drv
->set_pll
)
3742 codec
->component
.set_pll
= snd_soc_codec_set_pll_
;
3743 if (codec_drv
->set_jack
)
3744 codec
->component
.set_jack
= snd_soc_codec_set_jack_
;
3745 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3747 dapm
= snd_soc_codec_get_dapm(codec
);
3748 dapm
->idle_bias_off
= codec_drv
->idle_bias_off
;
3749 dapm
->suspend_bias_off
= codec_drv
->suspend_bias_off
;
3750 if (codec_drv
->seq_notifier
)
3751 dapm
->seq_notifier
= codec_drv
->seq_notifier
;
3752 if (codec_drv
->set_bias_level
)
3753 dapm
->set_bias_level
= snd_soc_codec_set_bias_level
;
3755 codec
->driver
= codec_drv
;
3756 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3758 #ifdef CONFIG_DEBUG_FS
3759 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3760 codec
->component
.debugfs_prefix
= "codec";
3763 if (codec_drv
->get_regmap
)
3764 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3766 for (i
= 0; i
< num_dai
; i
++) {
3767 fixup_codec_formats(&dai_drv
[i
].playback
);
3768 fixup_codec_formats(&dai_drv
[i
].capture
);
3771 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3773 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3777 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3780 mutex_lock(&client_mutex
);
3781 snd_soc_component_add_unlocked(&codec
->component
);
3782 list_add(&codec
->list
, &codec_list
);
3783 mutex_unlock(&client_mutex
);
3785 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3786 codec
->component
.name
);
3790 snd_soc_component_cleanup(&codec
->component
);
3795 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3798 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3800 * @dev: codec to unregister
3802 void snd_soc_unregister_codec(struct device
*dev
)
3804 struct snd_soc_codec
*codec
;
3806 mutex_lock(&client_mutex
);
3807 list_for_each_entry(codec
, &codec_list
, list
) {
3808 if (dev
== codec
->dev
)
3811 mutex_unlock(&client_mutex
);
3815 list_del(&codec
->list
);
3816 snd_soc_component_del_unlocked(&codec
->component
);
3817 mutex_unlock(&client_mutex
);
3819 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3820 codec
->component
.name
);
3822 snd_soc_component_cleanup(&codec
->component
);
3823 snd_soc_cache_exit(codec
);
3826 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3828 /* Retrieve a card's name from device tree */
3829 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3830 const char *propname
)
3832 struct device_node
*np
;
3836 pr_err("card->dev is not set before calling %s\n", __func__
);
3840 np
= card
->dev
->of_node
;
3842 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3844 * EINVAL means the property does not exist. This is fine providing
3845 * card->name was previously set, which is checked later in
3846 * snd_soc_register_card.
3848 if (ret
< 0 && ret
!= -EINVAL
) {
3850 "ASoC: Property '%s' could not be read: %d\n",
3857 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3859 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3860 SND_SOC_DAPM_MIC("Microphone", NULL
),
3861 SND_SOC_DAPM_LINE("Line", NULL
),
3862 SND_SOC_DAPM_HP("Headphone", NULL
),
3863 SND_SOC_DAPM_SPK("Speaker", NULL
),
3866 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3867 const char *propname
)
3869 struct device_node
*np
= card
->dev
->of_node
;
3870 struct snd_soc_dapm_widget
*widgets
;
3871 const char *template, *wname
;
3872 int i
, j
, num_widgets
, ret
;
3874 num_widgets
= of_property_count_strings(np
, propname
);
3875 if (num_widgets
< 0) {
3877 "ASoC: Property '%s' does not exist\n", propname
);
3880 if (num_widgets
& 1) {
3882 "ASoC: Property '%s' length is not even\n", propname
);
3888 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3893 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3897 "ASoC: Could not allocate memory for widgets\n");
3901 for (i
= 0; i
< num_widgets
; i
++) {
3902 ret
= of_property_read_string_index(np
, propname
,
3906 "ASoC: Property '%s' index %d read error:%d\n",
3907 propname
, 2 * i
, ret
);
3911 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3912 if (!strncmp(template, simple_widgets
[j
].name
,
3913 strlen(simple_widgets
[j
].name
))) {
3914 widgets
[i
] = simple_widgets
[j
];
3919 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3921 "ASoC: DAPM widget '%s' is not supported\n",
3926 ret
= of_property_read_string_index(np
, propname
,
3931 "ASoC: Property '%s' index %d read error:%d\n",
3932 propname
, (2 * i
) + 1, ret
);
3936 widgets
[i
].name
= wname
;
3939 card
->of_dapm_widgets
= widgets
;
3940 card
->num_of_dapm_widgets
= num_widgets
;
3944 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3946 static int snd_soc_of_get_slot_mask(struct device_node
*np
,
3947 const char *prop_name
,
3951 const __be32
*of_slot_mask
= of_get_property(np
, prop_name
, &val
);
3957 for (i
= 0; i
< val
; i
++)
3958 if (be32_to_cpup(&of_slot_mask
[i
]))
3964 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3965 unsigned int *tx_mask
,
3966 unsigned int *rx_mask
,
3967 unsigned int *slots
,
3968 unsigned int *slot_width
)
3974 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-tx-mask", tx_mask
);
3976 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-rx-mask", rx_mask
);
3978 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3979 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3987 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3988 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
3998 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4000 void snd_soc_of_parse_audio_prefix(struct snd_soc_card
*card
,
4001 struct snd_soc_codec_conf
*codec_conf
,
4002 struct device_node
*of_node
,
4003 const char *propname
)
4005 struct device_node
*np
= card
->dev
->of_node
;
4009 ret
= of_property_read_string(np
, propname
, &str
);
4011 /* no prefix is not error */
4015 codec_conf
->of_node
= of_node
;
4016 codec_conf
->name_prefix
= str
;
4018 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix
);
4020 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4021 const char *propname
)
4023 struct device_node
*np
= card
->dev
->of_node
;
4025 struct snd_soc_dapm_route
*routes
;
4028 num_routes
= of_property_count_strings(np
, propname
);
4029 if (num_routes
< 0 || num_routes
& 1) {
4031 "ASoC: Property '%s' does not exist or its length is not even\n",
4037 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4042 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4046 "ASoC: Could not allocate DAPM route table\n");
4050 for (i
= 0; i
< num_routes
; i
++) {
4051 ret
= of_property_read_string_index(np
, propname
,
4052 2 * i
, &routes
[i
].sink
);
4055 "ASoC: Property '%s' index %d could not be read: %d\n",
4056 propname
, 2 * i
, ret
);
4059 ret
= of_property_read_string_index(np
, propname
,
4060 (2 * i
) + 1, &routes
[i
].source
);
4063 "ASoC: Property '%s' index %d could not be read: %d\n",
4064 propname
, (2 * i
) + 1, ret
);
4069 card
->num_of_dapm_routes
= num_routes
;
4070 card
->of_dapm_routes
= routes
;
4074 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4076 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4078 struct device_node
**bitclkmaster
,
4079 struct device_node
**framemaster
)
4083 unsigned int format
= 0;
4089 } of_fmt_table
[] = {
4090 { "i2s", SND_SOC_DAIFMT_I2S
},
4091 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4092 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4093 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4094 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4095 { "ac97", SND_SOC_DAIFMT_AC97
},
4096 { "pdm", SND_SOC_DAIFMT_PDM
},
4097 { "msb", SND_SOC_DAIFMT_MSB
},
4098 { "lsb", SND_SOC_DAIFMT_LSB
},
4105 * check "dai-format = xxx"
4106 * or "[prefix]format = xxx"
4107 * SND_SOC_DAIFMT_FORMAT_MASK area
4109 ret
= of_property_read_string(np
, "dai-format", &str
);
4111 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4112 ret
= of_property_read_string(np
, prop
, &str
);
4115 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4116 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4117 format
|= of_fmt_table
[i
].val
;
4124 * check "[prefix]continuous-clock"
4125 * SND_SOC_DAIFMT_CLOCK_MASK area
4127 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4128 if (of_property_read_bool(np
, prop
))
4129 format
|= SND_SOC_DAIFMT_CONT
;
4131 format
|= SND_SOC_DAIFMT_GATED
;
4134 * check "[prefix]bitclock-inversion"
4135 * check "[prefix]frame-inversion"
4136 * SND_SOC_DAIFMT_INV_MASK area
4138 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4139 bit
= !!of_get_property(np
, prop
, NULL
);
4141 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4142 frame
= !!of_get_property(np
, prop
, NULL
);
4144 switch ((bit
<< 4) + frame
) {
4146 format
|= SND_SOC_DAIFMT_IB_IF
;
4149 format
|= SND_SOC_DAIFMT_IB_NF
;
4152 format
|= SND_SOC_DAIFMT_NB_IF
;
4155 /* SND_SOC_DAIFMT_NB_NF is default */
4160 * check "[prefix]bitclock-master"
4161 * check "[prefix]frame-master"
4162 * SND_SOC_DAIFMT_MASTER_MASK area
4164 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4165 bit
= !!of_get_property(np
, prop
, NULL
);
4166 if (bit
&& bitclkmaster
)
4167 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
4169 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4170 frame
= !!of_get_property(np
, prop
, NULL
);
4171 if (frame
&& framemaster
)
4172 *framemaster
= of_parse_phandle(np
, prop
, 0);
4174 switch ((bit
<< 4) + frame
) {
4176 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4179 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4182 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4185 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4191 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4193 int snd_soc_get_dai_id(struct device_node
*ep
)
4195 struct snd_soc_component
*pos
;
4196 struct device_node
*node
;
4199 node
= of_graph_get_port_parent(ep
);
4202 * For example HDMI case, HDMI has video/sound port,
4203 * but ALSA SoC needs sound port number only.
4204 * Thus counting HDMI DT port/endpoint doesn't work.
4205 * Then, it should have .of_xlate_dai_id
4208 mutex_lock(&client_mutex
);
4209 list_for_each_entry(pos
, &component_list
, list
) {
4210 struct device_node
*component_of_node
= pos
->dev
->of_node
;
4212 if (!component_of_node
&& pos
->dev
->parent
)
4213 component_of_node
= pos
->dev
->parent
->of_node
;
4215 if (component_of_node
!= node
)
4218 if (pos
->driver
->of_xlate_dai_id
)
4219 ret
= pos
->driver
->of_xlate_dai_id(pos
, ep
);
4223 mutex_unlock(&client_mutex
);
4229 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id
);
4231 int snd_soc_get_dai_name(struct of_phandle_args
*args
,
4232 const char **dai_name
)
4234 struct snd_soc_component
*pos
;
4235 struct device_node
*component_of_node
;
4236 int ret
= -EPROBE_DEFER
;
4238 mutex_lock(&client_mutex
);
4239 list_for_each_entry(pos
, &component_list
, list
) {
4240 component_of_node
= pos
->dev
->of_node
;
4241 if (!component_of_node
&& pos
->dev
->parent
)
4242 component_of_node
= pos
->dev
->parent
->of_node
;
4244 if (component_of_node
!= args
->np
)
4247 if (pos
->driver
->of_xlate_dai_name
) {
4248 ret
= pos
->driver
->of_xlate_dai_name(pos
,
4254 switch (args
->args_count
) {
4256 id
= 0; /* same as dai_drv[0] */
4266 if (id
< 0 || id
>= pos
->num_dai
) {
4273 *dai_name
= pos
->dai_drv
[id
].name
;
4275 *dai_name
= pos
->name
;
4280 mutex_unlock(&client_mutex
);
4283 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name
);
4285 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4286 const char **dai_name
)
4288 struct of_phandle_args args
;
4291 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4292 "#sound-dai-cells", 0, &args
);
4296 ret
= snd_soc_get_dai_name(&args
, dai_name
);
4298 of_node_put(args
.np
);
4302 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4305 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4307 * @of_node: Device node
4308 * @dai_link: DAI link
4310 * Builds an array of CODEC DAI components from the DAI link property
4312 * The array is set in the DAI link and the number of DAIs is set accordingly.
4313 * The device nodes in the array (of_node) must be dereferenced by the caller.
4315 * Returns 0 for success
4317 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
4318 struct device_node
*of_node
,
4319 struct snd_soc_dai_link
*dai_link
)
4321 struct of_phandle_args args
;
4322 struct snd_soc_dai_link_component
*component
;
4324 int index
, num_codecs
, ret
;
4326 /* Count the number of CODECs */
4328 num_codecs
= of_count_phandle_with_args(of_node
, name
,
4329 "#sound-dai-cells");
4330 if (num_codecs
<= 0) {
4331 if (num_codecs
== -ENOENT
)
4332 dev_err(dev
, "No 'sound-dai' property\n");
4334 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
4337 component
= devm_kzalloc(dev
,
4338 sizeof *component
* num_codecs
,
4342 dai_link
->codecs
= component
;
4343 dai_link
->num_codecs
= num_codecs
;
4345 /* Parse the list */
4346 for (index
= 0, component
= dai_link
->codecs
;
4347 index
< dai_link
->num_codecs
;
4348 index
++, component
++) {
4349 ret
= of_parse_phandle_with_args(of_node
, name
,
4354 component
->of_node
= args
.np
;
4355 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
4361 for (index
= 0, component
= dai_link
->codecs
;
4362 index
< dai_link
->num_codecs
;
4363 index
++, component
++) {
4364 if (!component
->of_node
)
4366 of_node_put(component
->of_node
);
4367 component
->of_node
= NULL
;
4369 dai_link
->codecs
= NULL
;
4370 dai_link
->num_codecs
= 0;
4373 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
4375 static int __init
snd_soc_init(void)
4377 snd_soc_debugfs_init();
4378 snd_soc_util_init();
4380 return platform_driver_register(&soc_driver
);
4382 module_init(snd_soc_init
);
4384 static void __exit
snd_soc_exit(void)
4386 snd_soc_util_exit();
4387 snd_soc_debugfs_exit();
4389 platform_driver_unregister(&soc_driver
);
4391 module_exit(snd_soc_exit
);
4393 /* Module information */
4394 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4395 MODULE_DESCRIPTION("ALSA SoC Core");
4396 MODULE_LICENSE("GPL");
4397 MODULE_ALIAS("platform:soc-audio");