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
->num_codecs
? 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
;
601 EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup
);
603 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
604 const char *dai_link
, int stream
)
606 struct snd_soc_pcm_runtime
*rtd
;
608 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
609 if (rtd
->dai_link
->no_pcm
&&
610 !strcmp(rtd
->dai_link
->name
, dai_link
))
611 return rtd
->pcm
->streams
[stream
].substream
;
613 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
616 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
618 static const struct snd_soc_ops null_snd_soc_ops
;
620 static struct snd_soc_pcm_runtime
*soc_new_pcm_runtime(
621 struct snd_soc_card
*card
, struct snd_soc_dai_link
*dai_link
)
623 struct snd_soc_pcm_runtime
*rtd
;
625 rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
), GFP_KERNEL
);
629 INIT_LIST_HEAD(&rtd
->component_list
);
631 rtd
->dai_link
= dai_link
;
632 if (!rtd
->dai_link
->ops
)
633 rtd
->dai_link
->ops
= &null_snd_soc_ops
;
635 rtd
->codec_dais
= kzalloc(sizeof(struct snd_soc_dai
*) *
636 dai_link
->num_codecs
,
638 if (!rtd
->codec_dais
) {
646 static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime
*rtd
)
648 kfree(rtd
->codec_dais
);
649 snd_soc_rtdcom_del_all(rtd
);
653 static void soc_add_pcm_runtime(struct snd_soc_card
*card
,
654 struct snd_soc_pcm_runtime
*rtd
)
656 list_add_tail(&rtd
->list
, &card
->rtd_list
);
657 rtd
->num
= card
->num_rtd
;
661 static void soc_remove_pcm_runtimes(struct snd_soc_card
*card
)
663 struct snd_soc_pcm_runtime
*rtd
, *_rtd
;
665 list_for_each_entry_safe(rtd
, _rtd
, &card
->rtd_list
, list
) {
666 list_del(&rtd
->list
);
667 soc_free_pcm_runtime(rtd
);
673 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
674 const char *dai_link
)
676 struct snd_soc_pcm_runtime
*rtd
;
678 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
679 if (!strcmp(rtd
->dai_link
->name
, dai_link
))
682 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
685 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
687 static void codec2codec_close_delayed_work(struct work_struct
*work
)
689 /* Currently nothing to do for c2c links
690 * Since c2c links are internal nodes in the DAPM graph and
691 * don't interface with the outside world or application layer
692 * we don't have to do any special handling on close.
696 #ifdef CONFIG_PM_SLEEP
697 /* powers down audio subsystem for suspend */
698 int snd_soc_suspend(struct device
*dev
)
700 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
701 struct snd_soc_component
*component
;
702 struct snd_soc_pcm_runtime
*rtd
;
705 /* If the card is not initialized yet there is nothing to do */
706 if (!card
->instantiated
)
709 /* Due to the resume being scheduled into a workqueue we could
710 * suspend before that's finished - wait for it to complete.
712 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
714 /* we're going to block userspace touching us until resume completes */
715 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
717 /* mute any active DACs */
718 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
720 if (rtd
->dai_link
->ignore_suspend
)
723 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
724 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
725 struct snd_soc_dai_driver
*drv
= dai
->driver
;
727 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
728 drv
->ops
->digital_mute(dai
, 1);
732 /* suspend all pcms */
733 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
734 if (rtd
->dai_link
->ignore_suspend
)
737 snd_pcm_suspend_all(rtd
->pcm
);
740 if (card
->suspend_pre
)
741 card
->suspend_pre(card
);
743 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
744 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
746 if (rtd
->dai_link
->ignore_suspend
)
749 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
750 cpu_dai
->driver
->suspend(cpu_dai
);
753 /* close any waiting streams */
754 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
755 flush_delayed_work(&rtd
->delayed_work
);
757 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
759 if (rtd
->dai_link
->ignore_suspend
)
762 snd_soc_dapm_stream_event(rtd
,
763 SNDRV_PCM_STREAM_PLAYBACK
,
764 SND_SOC_DAPM_STREAM_SUSPEND
);
766 snd_soc_dapm_stream_event(rtd
,
767 SNDRV_PCM_STREAM_CAPTURE
,
768 SND_SOC_DAPM_STREAM_SUSPEND
);
771 /* Recheck all endpoints too, their state is affected by suspend */
772 dapm_mark_endpoints_dirty(card
);
773 snd_soc_dapm_sync(&card
->dapm
);
775 /* suspend all COMPONENTs */
776 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
777 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
779 /* If there are paths active then the COMPONENT will be held with
780 * bias _ON and should not be suspended. */
781 if (!component
->suspended
) {
782 switch (snd_soc_dapm_get_bias_level(dapm
)) {
783 case SND_SOC_BIAS_STANDBY
:
785 * If the COMPONENT is capable of idle
786 * bias off then being in STANDBY
787 * means it's doing something,
788 * otherwise fall through.
790 if (dapm
->idle_bias_off
) {
791 dev_dbg(component
->dev
,
792 "ASoC: idle_bias_off CODEC on over suspend\n");
796 case SND_SOC_BIAS_OFF
:
797 if (component
->suspend
)
798 component
->suspend(component
);
799 component
->suspended
= 1;
800 if (component
->regmap
)
801 regcache_mark_dirty(component
->regmap
);
802 /* deactivate pins to sleep state */
803 pinctrl_pm_select_sleep_state(component
->dev
);
806 dev_dbg(component
->dev
,
807 "ASoC: COMPONENT is on over suspend\n");
813 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
814 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
816 if (rtd
->dai_link
->ignore_suspend
)
819 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
820 cpu_dai
->driver
->suspend(cpu_dai
);
822 /* deactivate pins to sleep state */
823 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
826 if (card
->suspend_post
)
827 card
->suspend_post(card
);
831 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
833 /* deferred resume work, so resume can complete before we finished
834 * setting our codec back up, which can be very slow on I2C
836 static void soc_resume_deferred(struct work_struct
*work
)
838 struct snd_soc_card
*card
=
839 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
840 struct snd_soc_pcm_runtime
*rtd
;
841 struct snd_soc_component
*component
;
844 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
845 * so userspace apps are blocked from touching us
848 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
850 /* Bring us up into D2 so that DAPM starts enabling things */
851 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
853 if (card
->resume_pre
)
854 card
->resume_pre(card
);
856 /* resume control bus DAIs */
857 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
858 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
860 if (rtd
->dai_link
->ignore_suspend
)
863 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
864 cpu_dai
->driver
->resume(cpu_dai
);
867 list_for_each_entry(component
, &card
->component_dev_list
, card_list
) {
868 if (component
->suspended
) {
869 if (component
->resume
)
870 component
->resume(component
);
871 component
->suspended
= 0;
875 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
877 if (rtd
->dai_link
->ignore_suspend
)
880 snd_soc_dapm_stream_event(rtd
,
881 SNDRV_PCM_STREAM_PLAYBACK
,
882 SND_SOC_DAPM_STREAM_RESUME
);
884 snd_soc_dapm_stream_event(rtd
,
885 SNDRV_PCM_STREAM_CAPTURE
,
886 SND_SOC_DAPM_STREAM_RESUME
);
889 /* unmute any active DACs */
890 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
892 if (rtd
->dai_link
->ignore_suspend
)
895 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
896 struct snd_soc_dai
*dai
= rtd
->codec_dais
[i
];
897 struct snd_soc_dai_driver
*drv
= dai
->driver
;
899 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
900 drv
->ops
->digital_mute(dai
, 0);
904 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
905 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
907 if (rtd
->dai_link
->ignore_suspend
)
910 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
911 cpu_dai
->driver
->resume(cpu_dai
);
914 if (card
->resume_post
)
915 card
->resume_post(card
);
917 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
919 /* Recheck all endpoints too, their state is affected by suspend */
920 dapm_mark_endpoints_dirty(card
);
921 snd_soc_dapm_sync(&card
->dapm
);
923 /* userspace can access us now we are back as we were before */
924 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
927 /* powers up audio subsystem after a suspend */
928 int snd_soc_resume(struct device
*dev
)
930 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
931 bool bus_control
= false;
932 struct snd_soc_pcm_runtime
*rtd
;
934 /* If the card is not initialized yet there is nothing to do */
935 if (!card
->instantiated
)
938 /* activate pins from sleep state */
939 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
940 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
941 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
945 pinctrl_pm_select_default_state(cpu_dai
->dev
);
947 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
948 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
949 if (codec_dai
->active
)
950 pinctrl_pm_select_default_state(codec_dai
->dev
);
955 * DAIs that also act as the control bus master might have other drivers
956 * hanging off them so need to resume immediately. Other drivers don't
957 * have that problem and may take a substantial amount of time to resume
958 * due to I/O costs and anti-pop so handle them out of line.
960 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
961 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
962 bus_control
|= cpu_dai
->driver
->bus_control
;
965 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
966 soc_resume_deferred(&card
->deferred_resume_work
);
968 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
969 if (!schedule_work(&card
->deferred_resume_work
))
970 dev_err(dev
, "ASoC: resume work item may be lost\n");
975 EXPORT_SYMBOL_GPL(snd_soc_resume
);
977 #define snd_soc_suspend NULL
978 #define snd_soc_resume NULL
981 static const struct snd_soc_dai_ops null_dai_ops
= {
984 static struct snd_soc_component
*soc_find_component(
985 const struct device_node
*of_node
, const char *name
)
987 struct snd_soc_component
*component
;
989 lockdep_assert_held(&client_mutex
);
991 list_for_each_entry(component
, &component_list
, list
) {
993 if (component
->dev
->of_node
== of_node
)
995 } else if (strcmp(component
->name
, name
) == 0) {
1004 * snd_soc_find_dai - Find a registered DAI
1006 * @dlc: name of the DAI or the DAI driver and optional component info to match
1008 * This function will search all registered components and their DAIs to
1009 * find the DAI of the same name. The component's of_node and name
1010 * should also match if being specified.
1012 * Return: pointer of DAI, or NULL if not found.
1014 struct snd_soc_dai
*snd_soc_find_dai(
1015 const struct snd_soc_dai_link_component
*dlc
)
1017 struct snd_soc_component
*component
;
1018 struct snd_soc_dai
*dai
;
1019 struct device_node
*component_of_node
;
1021 lockdep_assert_held(&client_mutex
);
1023 /* Find CPU DAI from registered DAIs*/
1024 list_for_each_entry(component
, &component_list
, list
) {
1025 component_of_node
= component
->dev
->of_node
;
1026 if (!component_of_node
&& component
->dev
->parent
)
1027 component_of_node
= component
->dev
->parent
->of_node
;
1029 if (dlc
->of_node
&& component_of_node
!= dlc
->of_node
)
1031 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
1033 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1034 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
)
1035 && (!dai
->driver
->name
1036 || strcmp(dai
->driver
->name
, dlc
->dai_name
)))
1045 EXPORT_SYMBOL_GPL(snd_soc_find_dai
);
1049 * snd_soc_find_dai_link - Find a DAI link
1052 * @id: DAI link ID to match
1053 * @name: DAI link name to match, optional
1054 * @stream_name: DAI link stream name to match, optional
1056 * This function will search all existing DAI links of the soc card to
1057 * find the link of the same ID. Since DAI links may not have their
1058 * unique ID, so name and stream name should also match if being
1061 * Return: pointer of DAI link, or NULL if not found.
1063 struct snd_soc_dai_link
*snd_soc_find_dai_link(struct snd_soc_card
*card
,
1064 int id
, const char *name
,
1065 const char *stream_name
)
1067 struct snd_soc_dai_link
*link
, *_link
;
1069 lockdep_assert_held(&client_mutex
);
1071 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1075 if (name
&& (!link
->name
|| strcmp(name
, link
->name
)))
1078 if (stream_name
&& (!link
->stream_name
1079 || strcmp(stream_name
, link
->stream_name
)))
1087 EXPORT_SYMBOL_GPL(snd_soc_find_dai_link
);
1089 static bool soc_is_dai_link_bound(struct snd_soc_card
*card
,
1090 struct snd_soc_dai_link
*dai_link
)
1092 struct snd_soc_pcm_runtime
*rtd
;
1094 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
1095 if (rtd
->dai_link
== dai_link
)
1102 static int soc_bind_dai_link(struct snd_soc_card
*card
,
1103 struct snd_soc_dai_link
*dai_link
)
1105 struct snd_soc_pcm_runtime
*rtd
;
1106 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
1107 struct snd_soc_dai_link_component cpu_dai_component
;
1108 struct snd_soc_component
*component
;
1109 struct snd_soc_dai
**codec_dais
;
1110 struct snd_soc_platform
*platform
;
1111 struct device_node
*platform_of_node
;
1112 const char *platform_name
;
1115 dev_dbg(card
->dev
, "ASoC: binding %s\n", dai_link
->name
);
1117 if (soc_is_dai_link_bound(card
, dai_link
)) {
1118 dev_dbg(card
->dev
, "ASoC: dai link %s already bound\n",
1123 rtd
= soc_new_pcm_runtime(card
, dai_link
);
1127 cpu_dai_component
.name
= dai_link
->cpu_name
;
1128 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
1129 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
1130 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
1131 if (!rtd
->cpu_dai
) {
1132 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
1133 dai_link
->cpu_dai_name
);
1136 snd_soc_rtdcom_add(rtd
, rtd
->cpu_dai
->component
);
1138 rtd
->num_codecs
= dai_link
->num_codecs
;
1140 /* Find CODEC from registered CODECs */
1141 codec_dais
= rtd
->codec_dais
;
1142 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1143 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
1144 if (!codec_dais
[i
]) {
1145 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
1146 codecs
[i
].dai_name
);
1149 snd_soc_rtdcom_add(rtd
, codec_dais
[i
]->component
);
1152 /* Single codec links expect codec and codec_dai in runtime data */
1153 rtd
->codec_dai
= codec_dais
[0];
1154 rtd
->codec
= rtd
->codec_dai
->codec
;
1156 /* if there's no platform we match on the empty platform */
1157 platform_name
= dai_link
->platform_name
;
1158 if (!platform_name
&& !dai_link
->platform_of_node
)
1159 platform_name
= "snd-soc-dummy";
1161 /* find one from the set of registered platforms */
1162 list_for_each_entry(component
, &component_list
, list
) {
1163 platform_of_node
= component
->dev
->of_node
;
1164 if (!platform_of_node
&& component
->dev
->parent
->of_node
)
1165 platform_of_node
= component
->dev
->parent
->of_node
;
1167 if (dai_link
->platform_of_node
) {
1168 if (platform_of_node
!= dai_link
->platform_of_node
)
1171 if (strcmp(component
->name
, platform_name
))
1175 snd_soc_rtdcom_add(rtd
, component
);
1178 /* find one from the set of registered platforms */
1179 list_for_each_entry(platform
, &platform_list
, list
) {
1180 platform_of_node
= platform
->dev
->of_node
;
1181 if (!platform_of_node
&& platform
->dev
->parent
->of_node
)
1182 platform_of_node
= platform
->dev
->parent
->of_node
;
1184 if (dai_link
->platform_of_node
) {
1185 if (platform_of_node
!= dai_link
->platform_of_node
)
1188 if (strcmp(platform
->component
.name
, platform_name
))
1192 rtd
->platform
= platform
;
1194 if (!rtd
->platform
) {
1195 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
1196 dai_link
->platform_name
);
1200 soc_add_pcm_runtime(card
, rtd
);
1204 soc_free_pcm_runtime(rtd
);
1205 return -EPROBE_DEFER
;
1208 static void soc_remove_component(struct snd_soc_component
*component
)
1210 if (!component
->card
)
1213 list_del(&component
->card_list
);
1215 if (component
->remove
)
1216 component
->remove(component
);
1218 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
1220 soc_cleanup_component_debugfs(component
);
1221 component
->card
= NULL
;
1222 module_put(component
->dev
->driver
->owner
);
1225 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
1229 if (dai
&& dai
->probed
&&
1230 dai
->driver
->remove_order
== order
) {
1231 if (dai
->driver
->remove
) {
1232 err
= dai
->driver
->remove(dai
);
1235 "ASoC: failed to remove %s: %d\n",
1242 static void soc_remove_link_dais(struct snd_soc_card
*card
,
1243 struct snd_soc_pcm_runtime
*rtd
, int order
)
1247 /* unregister the rtd device */
1248 if (rtd
->dev_registered
) {
1249 device_unregister(rtd
->dev
);
1250 rtd
->dev_registered
= 0;
1253 /* remove the CODEC DAI */
1254 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1255 soc_remove_dai(rtd
->codec_dais
[i
], order
);
1257 soc_remove_dai(rtd
->cpu_dai
, order
);
1260 static void soc_remove_link_components(struct snd_soc_card
*card
,
1261 struct snd_soc_pcm_runtime
*rtd
, int order
)
1263 struct snd_soc_component
*component
;
1264 struct snd_soc_rtdcom_list
*rtdcom
;
1266 for_each_rtdcom(rtd
, rtdcom
) {
1267 component
= rtdcom
->component
;
1269 if (component
->driver
->remove_order
== order
)
1270 soc_remove_component(component
);
1274 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1277 struct snd_soc_pcm_runtime
*rtd
;
1278 struct snd_soc_dai_link
*link
, *_link
;
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_dais(card
, rtd
, order
);
1286 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1288 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
1289 soc_remove_link_components(card
, rtd
, order
);
1292 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1293 if (link
->dobj
.type
== SND_SOC_DOBJ_DAI_LINK
)
1294 dev_warn(card
->dev
, "Topology forgot to remove link %s?\n",
1297 list_del(&link
->list
);
1298 card
->num_dai_links
--;
1302 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
1303 struct snd_soc_dai_link
*dai_link
)
1305 /* Legacy codec/codec_dai link is a single entry in multicodec */
1306 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
1307 dai_link
->codec_dai_name
) {
1308 dai_link
->num_codecs
= 1;
1310 dai_link
->codecs
= devm_kzalloc(card
->dev
,
1311 sizeof(struct snd_soc_dai_link_component
),
1313 if (!dai_link
->codecs
)
1316 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
1317 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
1318 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
1321 if (!dai_link
->codecs
) {
1322 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
1329 static int soc_init_dai_link(struct snd_soc_card
*card
,
1330 struct snd_soc_dai_link
*link
)
1334 ret
= snd_soc_init_multicodec(card
, link
);
1336 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
1340 for (i
= 0; i
< link
->num_codecs
; i
++) {
1342 * Codec must be specified by 1 of name or OF node,
1343 * not both or neither.
1345 if (!!link
->codecs
[i
].name
==
1346 !!link
->codecs
[i
].of_node
) {
1347 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
1351 /* Codec DAI name must be specified */
1352 if (!link
->codecs
[i
].dai_name
) {
1353 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
1360 * Platform may be specified by either name or OF node, but
1361 * can be left unspecified, and a dummy platform will be used.
1363 if (link
->platform_name
&& link
->platform_of_node
) {
1365 "ASoC: Both platform name/of_node are set for %s\n",
1371 * CPU device may be specified by either name or OF node, but
1372 * can be left unspecified, and will be matched based on DAI
1375 if (link
->cpu_name
&& link
->cpu_of_node
) {
1377 "ASoC: Neither/both cpu name/of_node are set for %s\n",
1382 * At least one of CPU DAI name or CPU device name/node must be
1385 if (!link
->cpu_dai_name
&&
1386 !(link
->cpu_name
|| link
->cpu_of_node
)) {
1388 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
1396 void snd_soc_disconnect_sync(struct device
*dev
)
1398 struct snd_soc_component
*component
= snd_soc_lookup_component(dev
, NULL
);
1400 if (!component
|| !component
->card
)
1403 snd_card_disconnect_sync(component
->card
->snd_card
);
1407 * snd_soc_add_dai_link - Add a DAI link dynamically
1408 * @card: The ASoC card to which the DAI link is added
1409 * @dai_link: The new DAI link to add
1411 * This function adds a DAI link to the ASoC card's link list.
1413 * Note: Topology can use this API to add DAI links when probing the
1414 * topology component. And machine drivers can still define static
1415 * DAI links in dai_link array.
1417 int snd_soc_add_dai_link(struct snd_soc_card
*card
,
1418 struct snd_soc_dai_link
*dai_link
)
1420 if (dai_link
->dobj
.type
1421 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1422 dev_err(card
->dev
, "Invalid dai link type %d\n",
1423 dai_link
->dobj
.type
);
1427 lockdep_assert_held(&client_mutex
);
1428 /* Notify the machine driver for extra initialization
1429 * on the link created by topology.
1431 if (dai_link
->dobj
.type
&& card
->add_dai_link
)
1432 card
->add_dai_link(card
, dai_link
);
1434 list_add_tail(&dai_link
->list
, &card
->dai_link_list
);
1435 card
->num_dai_links
++;
1439 EXPORT_SYMBOL_GPL(snd_soc_add_dai_link
);
1442 * snd_soc_remove_dai_link - Remove a DAI link from the list
1443 * @card: The ASoC card that owns the link
1444 * @dai_link: The DAI link to remove
1446 * This function removes a DAI link from the ASoC card's link list.
1448 * For DAI links previously added by topology, topology should
1449 * remove them by using the dobj embedded in the link.
1451 void snd_soc_remove_dai_link(struct snd_soc_card
*card
,
1452 struct snd_soc_dai_link
*dai_link
)
1454 struct snd_soc_dai_link
*link
, *_link
;
1456 if (dai_link
->dobj
.type
1457 && dai_link
->dobj
.type
!= SND_SOC_DOBJ_DAI_LINK
) {
1458 dev_err(card
->dev
, "Invalid dai link type %d\n",
1459 dai_link
->dobj
.type
);
1463 lockdep_assert_held(&client_mutex
);
1464 /* Notify the machine driver for extra destruction
1465 * on the link created by topology.
1467 if (dai_link
->dobj
.type
&& card
->remove_dai_link
)
1468 card
->remove_dai_link(card
, dai_link
);
1470 list_for_each_entry_safe(link
, _link
, &card
->dai_link_list
, list
) {
1471 if (link
== dai_link
) {
1472 list_del(&link
->list
);
1473 card
->num_dai_links
--;
1478 EXPORT_SYMBOL_GPL(snd_soc_remove_dai_link
);
1480 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1481 struct snd_soc_component
*component
)
1485 if (card
->codec_conf
== NULL
)
1488 for (i
= 0; i
< card
->num_configs
; i
++) {
1489 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1490 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1492 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1494 component
->name_prefix
= map
->name_prefix
;
1499 static int soc_probe_component(struct snd_soc_card
*card
,
1500 struct snd_soc_component
*component
)
1502 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1503 struct snd_soc_dai
*dai
;
1506 if (!strcmp(component
->name
, "snd-soc-dummy"))
1509 if (component
->card
) {
1510 if (component
->card
!= card
) {
1511 dev_err(component
->dev
,
1512 "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n",
1513 card
->name
, component
->card
->name
);
1519 if (!try_module_get(component
->dev
->driver
->owner
))
1522 component
->card
= card
;
1524 soc_set_name_prefix(card
, component
);
1526 soc_init_component_debugfs(component
);
1528 if (component
->driver
->dapm_widgets
) {
1529 ret
= snd_soc_dapm_new_controls(dapm
,
1530 component
->driver
->dapm_widgets
,
1531 component
->driver
->num_dapm_widgets
);
1534 dev_err(component
->dev
,
1535 "Failed to create new controls %d\n", ret
);
1540 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1541 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1543 dev_err(component
->dev
,
1544 "Failed to create DAI widgets %d\n", ret
);
1549 if (component
->probe
) {
1550 ret
= component
->probe(component
);
1552 dev_err(component
->dev
,
1553 "ASoC: failed to probe component %d\n", ret
);
1557 WARN(dapm
->idle_bias_off
&&
1558 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1559 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1563 /* machine specific init */
1564 if (component
->init
) {
1565 ret
= component
->init(component
);
1567 dev_err(component
->dev
,
1568 "Failed to do machine specific init %d\n", ret
);
1573 if (component
->driver
->controls
)
1574 snd_soc_add_component_controls(component
,
1575 component
->driver
->controls
,
1576 component
->driver
->num_controls
);
1577 if (component
->driver
->dapm_routes
)
1578 snd_soc_dapm_add_routes(dapm
,
1579 component
->driver
->dapm_routes
,
1580 component
->driver
->num_dapm_routes
);
1582 list_add(&dapm
->list
, &card
->dapm_list
);
1583 list_add(&component
->card_list
, &card
->component_dev_list
);
1588 soc_cleanup_component_debugfs(component
);
1589 component
->card
= NULL
;
1590 module_put(component
->dev
->driver
->owner
);
1595 static void rtd_release(struct device
*dev
)
1600 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1605 /* register the rtd device */
1606 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1609 device_initialize(rtd
->dev
);
1610 rtd
->dev
->parent
= rtd
->card
->dev
;
1611 rtd
->dev
->release
= rtd_release
;
1612 rtd
->dev
->groups
= soc_dev_attr_groups
;
1613 dev_set_name(rtd
->dev
, "%s", name
);
1614 dev_set_drvdata(rtd
->dev
, rtd
);
1615 mutex_init(&rtd
->pcm_mutex
);
1616 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1617 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1618 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1619 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1620 ret
= device_add(rtd
->dev
);
1622 /* calling put_device() here to free the rtd->dev */
1623 put_device(rtd
->dev
);
1624 dev_err(rtd
->card
->dev
,
1625 "ASoC: failed to register runtime device: %d\n", ret
);
1628 rtd
->dev_registered
= 1;
1632 static int soc_probe_link_components(struct snd_soc_card
*card
,
1633 struct snd_soc_pcm_runtime
*rtd
,
1636 struct snd_soc_component
*component
;
1637 struct snd_soc_rtdcom_list
*rtdcom
;
1640 for_each_rtdcom(rtd
, rtdcom
) {
1641 component
= rtdcom
->component
;
1643 if (component
->driver
->probe_order
== order
) {
1644 ret
= soc_probe_component(card
, component
);
1653 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1657 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1658 if (dai
->driver
->probe
) {
1659 ret
= dai
->driver
->probe(dai
);
1662 "ASoC: failed to probe DAI %s: %d\n",
1674 static int soc_link_dai_pcm_new(struct snd_soc_dai
**dais
, int num_dais
,
1675 struct snd_soc_pcm_runtime
*rtd
)
1679 for (i
= 0; i
< num_dais
; ++i
) {
1680 struct snd_soc_dai_driver
*drv
= dais
[i
]->driver
;
1682 if (!rtd
->dai_link
->no_pcm
&& drv
->pcm_new
)
1683 ret
= drv
->pcm_new(rtd
, dais
[i
]);
1685 dev_err(dais
[i
]->dev
,
1686 "ASoC: Failed to bind %s with pcm device\n",
1695 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1696 struct snd_soc_dai_link
*dai_link
,
1697 struct snd_soc_pcm_runtime
*rtd
)
1699 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1700 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1701 struct snd_soc_dapm_widget
*sink
, *source
;
1704 if (rtd
->num_codecs
> 1)
1705 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1707 /* link the DAI widgets */
1708 sink
= codec_dai
->playback_widget
;
1709 source
= cpu_dai
->capture_widget
;
1710 if (sink
&& source
) {
1711 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1712 dai_link
->num_params
,
1715 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1716 sink
->name
, source
->name
, ret
);
1721 sink
= cpu_dai
->playback_widget
;
1722 source
= codec_dai
->capture_widget
;
1723 if (sink
&& source
) {
1724 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1725 dai_link
->num_params
,
1728 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1729 sink
->name
, source
->name
, ret
);
1737 static int soc_probe_link_dais(struct snd_soc_card
*card
,
1738 struct snd_soc_pcm_runtime
*rtd
, int order
)
1740 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
1741 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1744 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1745 card
->name
, rtd
->num
, order
);
1747 /* set default power off timeout */
1748 rtd
->pmdown_time
= pmdown_time
;
1750 ret
= soc_probe_dai(cpu_dai
, order
);
1754 /* probe the CODEC DAI */
1755 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1756 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1761 /* complete DAI probe during last probe */
1762 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1765 /* do machine specific initialization */
1766 if (dai_link
->init
) {
1767 ret
= dai_link
->init(rtd
);
1769 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1770 dai_link
->name
, ret
);
1775 if (dai_link
->dai_fmt
)
1776 snd_soc_runtime_set_dai_fmt(rtd
, dai_link
->dai_fmt
);
1778 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1782 #ifdef CONFIG_DEBUG_FS
1783 /* add DPCM sysfs entries */
1784 if (dai_link
->dynamic
)
1785 soc_dpcm_debugfs_add(rtd
);
1788 if (cpu_dai
->driver
->compress_new
) {
1789 /*create compress_device"*/
1790 ret
= cpu_dai
->driver
->compress_new(rtd
, rtd
->num
);
1792 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1793 dai_link
->stream_name
);
1798 if (!dai_link
->params
) {
1799 /* create the pcm */
1800 ret
= soc_new_pcm(rtd
, rtd
->num
);
1802 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1803 dai_link
->stream_name
, ret
);
1806 ret
= soc_link_dai_pcm_new(&cpu_dai
, 1, rtd
);
1809 ret
= soc_link_dai_pcm_new(rtd
->codec_dais
,
1810 rtd
->num_codecs
, rtd
);
1814 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1815 codec2codec_close_delayed_work
);
1817 /* link the DAI widgets */
1818 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1827 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1829 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1830 struct snd_soc_component
*component
;
1832 struct device_node
*codec_of_node
;
1834 if (aux_dev
->codec_of_node
|| aux_dev
->codec_name
) {
1835 /* codecs, usually analog devices */
1836 name
= aux_dev
->codec_name
;
1837 codec_of_node
= aux_dev
->codec_of_node
;
1838 component
= soc_find_component(codec_of_node
, name
);
1841 name
= of_node_full_name(codec_of_node
);
1844 } else if (aux_dev
->name
) {
1845 /* generic components */
1846 name
= aux_dev
->name
;
1847 component
= soc_find_component(NULL
, name
);
1851 dev_err(card
->dev
, "ASoC: Invalid auxiliary device\n");
1855 component
->init
= aux_dev
->init
;
1856 list_add(&component
->card_aux_list
, &card
->aux_comp_list
);
1861 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1862 return -EPROBE_DEFER
;
1865 static int soc_probe_aux_devices(struct snd_soc_card
*card
)
1867 struct snd_soc_component
*comp
;
1871 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1873 list_for_each_entry(comp
, &card
->aux_comp_list
, card_aux_list
) {
1874 if (comp
->driver
->probe_order
== order
) {
1875 ret
= soc_probe_component(card
, comp
);
1878 "ASoC: failed to probe aux component %s %d\n",
1889 static void soc_remove_aux_devices(struct snd_soc_card
*card
)
1891 struct snd_soc_component
*comp
, *_comp
;
1894 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1896 list_for_each_entry_safe(comp
, _comp
,
1897 &card
->aux_comp_list
, card_aux_list
) {
1899 if (comp
->driver
->remove_order
== order
) {
1900 soc_remove_component(comp
);
1901 /* remove it from the card's aux_comp_list */
1902 list_del(&comp
->card_aux_list
);
1908 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1912 if (codec
->cache_init
)
1915 ret
= snd_soc_cache_init(codec
);
1918 "ASoC: Failed to set cache compression type: %d\n",
1922 codec
->cache_init
= 1;
1927 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1928 * @rtd: The runtime for which the DAI link format should be changed
1929 * @dai_fmt: The new DAI link format
1931 * This function updates the DAI link format for all DAIs connected to the DAI
1932 * link for the specified runtime.
1934 * Note: For setups with a static format set the dai_fmt field in the
1935 * corresponding snd_dai_link struct instead of using this function.
1937 * Returns 0 on success, otherwise a negative error code.
1939 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1940 unsigned int dai_fmt
)
1942 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1943 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1947 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1948 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1950 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1951 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1952 dev_warn(codec_dai
->dev
,
1953 "ASoC: Failed to set DAI format: %d\n", ret
);
1958 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1959 /* the component which has non_legacy_dai_naming is Codec */
1960 if (cpu_dai
->codec
||
1961 cpu_dai
->component
->driver
->non_legacy_dai_naming
) {
1962 unsigned int inv_dai_fmt
;
1964 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1965 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1966 case SND_SOC_DAIFMT_CBM_CFM
:
1967 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1969 case SND_SOC_DAIFMT_CBM_CFS
:
1970 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1972 case SND_SOC_DAIFMT_CBS_CFM
:
1973 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1975 case SND_SOC_DAIFMT_CBS_CFS
:
1976 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1980 dai_fmt
= inv_dai_fmt
;
1983 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1984 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1985 dev_warn(cpu_dai
->dev
,
1986 "ASoC: Failed to set DAI format: %d\n", ret
);
1992 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1996 /* Trim special characters, and replace '-' with '_' since '-' is used to
1997 * separate different DMI fields in the card long name. Only number and
1998 * alphabet characters and a few separator characters are kept.
2000 static void cleanup_dmi_name(char *name
)
2004 for (i
= 0; name
[i
]; i
++) {
2005 if (isalnum(name
[i
]) || (name
[i
] == '.')
2006 || (name
[i
] == '_'))
2007 name
[j
++] = name
[i
];
2008 else if (name
[i
] == '-')
2015 /* Check if a DMI field is valid, i.e. not containing any string
2016 * in the black list.
2018 static int is_dmi_valid(const char *field
)
2022 while (dmi_blacklist
[i
]) {
2023 if (strstr(field
, dmi_blacklist
[i
]))
2032 * snd_soc_set_dmi_name() - Register DMI names to card
2033 * @card: The card to register DMI names
2034 * @flavour: The flavour "differentiator" for the card amongst its peers.
2036 * An Intel machine driver may be used by many different devices but are
2037 * difficult for userspace to differentiate, since machine drivers ususally
2038 * use their own name as the card short name and leave the card long name
2039 * blank. To differentiate such devices and fix bugs due to lack of
2040 * device-specific configurations, this function allows DMI info to be used
2041 * as the sound card long name, in the format of
2042 * "vendor-product-version-board"
2043 * (Character '-' is used to separate different DMI fields here).
2044 * This will help the user space to load the device-specific Use Case Manager
2045 * (UCM) configurations for the card.
2047 * Possible card long names may be:
2048 * DellInc.-XPS139343-01-0310JH
2049 * ASUSTeKCOMPUTERINC.-T100TA-1.0-T100TA
2050 * Circuitco-MinnowboardMaxD0PLATFORM-D0-MinnowBoardMAX
2052 * This function also supports flavoring the card longname to provide
2053 * the extra differentiation, like "vendor-product-version-board-flavor".
2055 * We only keep number and alphabet characters and a few separator characters
2056 * in the card long name since UCM in the user space uses the card long names
2057 * as card configuration directory names and AudoConf cannot support special
2058 * charactors like SPACE.
2060 * Returns 0 on success, otherwise a negative error code.
2062 int snd_soc_set_dmi_name(struct snd_soc_card
*card
, const char *flavour
)
2064 const char *vendor
, *product
, *product_version
, *board
;
2065 size_t longname_buf_size
= sizeof(card
->snd_card
->longname
);
2068 if (card
->long_name
)
2069 return 0; /* long name already set by driver or from DMI */
2071 /* make up dmi long name as: vendor.product.version.board */
2072 vendor
= dmi_get_system_info(DMI_BOARD_VENDOR
);
2073 if (!vendor
|| !is_dmi_valid(vendor
)) {
2074 dev_warn(card
->dev
, "ASoC: no DMI vendor name!\n");
2079 snprintf(card
->dmi_longname
, sizeof(card
->snd_card
->longname
),
2081 cleanup_dmi_name(card
->dmi_longname
);
2083 product
= dmi_get_system_info(DMI_PRODUCT_NAME
);
2084 if (product
&& is_dmi_valid(product
)) {
2085 len
= strlen(card
->dmi_longname
);
2086 snprintf(card
->dmi_longname
+ len
,
2087 longname_buf_size
- len
,
2090 len
++; /* skip the separator "-" */
2091 if (len
< longname_buf_size
)
2092 cleanup_dmi_name(card
->dmi_longname
+ len
);
2094 /* some vendors like Lenovo may only put a self-explanatory
2095 * name in the product version field
2097 product_version
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
2098 if (product_version
&& is_dmi_valid(product_version
)) {
2099 len
= strlen(card
->dmi_longname
);
2100 snprintf(card
->dmi_longname
+ len
,
2101 longname_buf_size
- len
,
2102 "-%s", product_version
);
2105 if (len
< longname_buf_size
)
2106 cleanup_dmi_name(card
->dmi_longname
+ len
);
2110 board
= dmi_get_system_info(DMI_BOARD_NAME
);
2111 if (board
&& is_dmi_valid(board
)) {
2112 len
= strlen(card
->dmi_longname
);
2113 snprintf(card
->dmi_longname
+ len
,
2114 longname_buf_size
- len
,
2118 if (len
< longname_buf_size
)
2119 cleanup_dmi_name(card
->dmi_longname
+ len
);
2120 } else if (!product
) {
2121 /* fall back to using legacy name */
2122 dev_warn(card
->dev
, "ASoC: no DMI board/product name!\n");
2126 /* Add flavour to dmi long name */
2128 len
= strlen(card
->dmi_longname
);
2129 snprintf(card
->dmi_longname
+ len
,
2130 longname_buf_size
- len
,
2134 if (len
< longname_buf_size
)
2135 cleanup_dmi_name(card
->dmi_longname
+ len
);
2138 /* set the card long name */
2139 card
->long_name
= card
->dmi_longname
;
2143 EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name
);
2144 #endif /* CONFIG_DMI */
2146 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
2148 struct snd_soc_codec
*codec
;
2149 struct snd_soc_pcm_runtime
*rtd
;
2150 struct snd_soc_dai_link
*dai_link
;
2153 mutex_lock(&client_mutex
);
2154 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
2157 for (i
= 0; i
< card
->num_links
; i
++) {
2158 ret
= soc_bind_dai_link(card
, &card
->dai_link
[i
]);
2163 /* bind aux_devs too */
2164 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
2165 ret
= soc_bind_aux_dev(card
, i
);
2170 /* add predefined DAI links to the list */
2171 for (i
= 0; i
< card
->num_links
; i
++)
2172 snd_soc_add_dai_link(card
, card
->dai_link
+i
);
2174 /* initialize the register cache for each available codec */
2175 list_for_each_entry(codec
, &codec_list
, list
) {
2176 if (codec
->cache_init
)
2178 ret
= snd_soc_init_codec_cache(codec
);
2183 /* card bind complete so register a sound card */
2184 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
2185 card
->owner
, 0, &card
->snd_card
);
2188 "ASoC: can't create sound card for card %s: %d\n",
2193 soc_init_card_debugfs(card
);
2195 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
2196 card
->dapm
.dev
= card
->dev
;
2197 card
->dapm
.card
= card
;
2198 list_add(&card
->dapm
.list
, &card
->dapm_list
);
2200 #ifdef CONFIG_DEBUG_FS
2201 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
2204 #ifdef CONFIG_PM_SLEEP
2205 /* deferred resume work */
2206 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
2209 if (card
->dapm_widgets
)
2210 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
2211 card
->num_dapm_widgets
);
2213 if (card
->of_dapm_widgets
)
2214 snd_soc_dapm_new_controls(&card
->dapm
, card
->of_dapm_widgets
,
2215 card
->num_of_dapm_widgets
);
2217 /* initialise the sound card only once */
2219 ret
= card
->probe(card
);
2221 goto card_probe_error
;
2224 /* probe all components used by DAI links on this card */
2225 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2227 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2228 ret
= soc_probe_link_components(card
, rtd
, order
);
2231 "ASoC: failed to instantiate card %d\n",
2238 /* probe auxiliary components */
2239 ret
= soc_probe_aux_devices(card
);
2243 /* Find new DAI links added during probing components and bind them.
2244 * Components with topology may bring new DAIs and DAI links.
2246 list_for_each_entry(dai_link
, &card
->dai_link_list
, list
) {
2247 if (soc_is_dai_link_bound(card
, dai_link
))
2250 ret
= soc_init_dai_link(card
, dai_link
);
2253 ret
= soc_bind_dai_link(card
, dai_link
);
2258 /* probe all DAI links on this card */
2259 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
2261 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2262 ret
= soc_probe_link_dais(card
, rtd
, order
);
2265 "ASoC: failed to instantiate card %d\n",
2272 snd_soc_dapm_link_dai_widgets(card
);
2273 snd_soc_dapm_connect_dai_link_widgets(card
);
2276 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
2278 if (card
->dapm_routes
)
2279 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
2280 card
->num_dapm_routes
);
2282 if (card
->of_dapm_routes
)
2283 snd_soc_dapm_add_routes(&card
->dapm
, card
->of_dapm_routes
,
2284 card
->num_of_dapm_routes
);
2286 /* try to set some sane longname if DMI is available */
2287 snd_soc_set_dmi_name(card
, NULL
);
2289 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
2291 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
2292 "%s", card
->long_name
? card
->long_name
: card
->name
);
2293 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
2294 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
2295 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
2296 switch (card
->snd_card
->driver
[i
]) {
2302 if (!isalnum(card
->snd_card
->driver
[i
]))
2303 card
->snd_card
->driver
[i
] = '_';
2308 if (card
->late_probe
) {
2309 ret
= card
->late_probe(card
);
2311 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
2313 goto probe_aux_dev_err
;
2317 snd_soc_dapm_new_widgets(card
);
2319 ret
= snd_card_register(card
->snd_card
);
2321 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
2323 goto probe_aux_dev_err
;
2326 card
->instantiated
= 1;
2327 snd_soc_dapm_sync(&card
->dapm
);
2328 mutex_unlock(&card
->mutex
);
2329 mutex_unlock(&client_mutex
);
2334 soc_remove_aux_devices(card
);
2337 soc_remove_dai_links(card
);
2343 snd_soc_dapm_free(&card
->dapm
);
2344 soc_cleanup_card_debugfs(card
);
2345 snd_card_free(card
->snd_card
);
2348 soc_remove_pcm_runtimes(card
);
2349 mutex_unlock(&card
->mutex
);
2350 mutex_unlock(&client_mutex
);
2355 /* probes a new socdev */
2356 static int soc_probe(struct platform_device
*pdev
)
2358 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2361 * no card, so machine driver should be registering card
2362 * we should not be here in that case so ret error
2367 dev_warn(&pdev
->dev
,
2368 "ASoC: machine %s should use snd_soc_register_card()\n",
2371 /* Bodge while we unpick instantiation */
2372 card
->dev
= &pdev
->dev
;
2374 return snd_soc_register_card(card
);
2377 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2379 struct snd_soc_pcm_runtime
*rtd
;
2381 /* make sure any delayed work runs */
2382 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2383 flush_delayed_work(&rtd
->delayed_work
);
2385 /* free the ALSA card at first; this syncs with pending operations */
2386 snd_card_free(card
->snd_card
);
2388 /* remove and free each DAI */
2389 soc_remove_dai_links(card
);
2390 soc_remove_pcm_runtimes(card
);
2392 /* remove auxiliary devices */
2393 soc_remove_aux_devices(card
);
2395 snd_soc_dapm_free(&card
->dapm
);
2396 soc_cleanup_card_debugfs(card
);
2398 /* remove the card */
2405 /* removes a socdev */
2406 static int soc_remove(struct platform_device
*pdev
)
2408 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2410 snd_soc_unregister_card(card
);
2414 int snd_soc_poweroff(struct device
*dev
)
2416 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2417 struct snd_soc_pcm_runtime
*rtd
;
2419 if (!card
->instantiated
)
2422 /* Flush out pmdown_time work - we actually do want to run it
2423 * now, we're shutting down so no imminent restart. */
2424 list_for_each_entry(rtd
, &card
->rtd_list
, list
)
2425 flush_delayed_work(&rtd
->delayed_work
);
2427 snd_soc_dapm_shutdown(card
);
2429 /* deactivate pins to sleep state */
2430 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
2431 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2434 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2435 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2436 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
2437 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2443 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2445 const struct dev_pm_ops snd_soc_pm_ops
= {
2446 .suspend
= snd_soc_suspend
,
2447 .resume
= snd_soc_resume
,
2448 .freeze
= snd_soc_suspend
,
2449 .thaw
= snd_soc_resume
,
2450 .poweroff
= snd_soc_poweroff
,
2451 .restore
= snd_soc_resume
,
2453 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2455 /* ASoC platform driver */
2456 static struct platform_driver soc_driver
= {
2458 .name
= "soc-audio",
2459 .pm
= &snd_soc_pm_ops
,
2462 .remove
= soc_remove
,
2466 * snd_soc_cnew - create new control
2467 * @_template: control template
2468 * @data: control private data
2469 * @long_name: control long name
2470 * @prefix: control name prefix
2472 * Create a new mixer control from a template control.
2474 * Returns 0 for success, else error.
2476 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2477 void *data
, const char *long_name
,
2480 struct snd_kcontrol_new
template;
2481 struct snd_kcontrol
*kcontrol
;
2484 memcpy(&template, _template
, sizeof(template));
2488 long_name
= template.name
;
2491 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2495 template.name
= name
;
2497 template.name
= long_name
;
2500 kcontrol
= snd_ctl_new1(&template, data
);
2506 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2508 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2509 const struct snd_kcontrol_new
*controls
, int num_controls
,
2510 const char *prefix
, void *data
)
2514 for (i
= 0; i
< num_controls
; i
++) {
2515 const struct snd_kcontrol_new
*control
= &controls
[i
];
2516 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2517 control
->name
, prefix
));
2519 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2520 control
->name
, err
);
2528 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2531 struct snd_card
*card
= soc_card
->snd_card
;
2532 struct snd_kcontrol
*kctl
;
2534 if (unlikely(!name
))
2537 list_for_each_entry(kctl
, &card
->controls
, list
)
2538 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2542 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2545 * snd_soc_add_component_controls - Add an array of controls to a component.
2547 * @component: Component to add controls to
2548 * @controls: Array of controls to add
2549 * @num_controls: Number of elements in the array
2551 * Return: 0 for success, else error.
2553 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2554 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2556 struct snd_card
*card
= component
->card
->snd_card
;
2558 return snd_soc_add_controls(card
, component
->dev
, controls
,
2559 num_controls
, component
->name_prefix
, component
);
2561 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2564 * snd_soc_add_codec_controls - add an array of controls to a codec.
2565 * Convenience function to add a list of controls. Many codecs were
2566 * duplicating this code.
2568 * @codec: codec 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_codec_controls(struct snd_soc_codec
*codec
,
2575 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2577 return snd_soc_add_component_controls(&codec
->component
, controls
,
2580 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2583 * snd_soc_add_platform_controls - add an array of controls to a platform.
2584 * Convenience function to add a list of controls.
2586 * @platform: platform 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_platform_controls(struct snd_soc_platform
*platform
,
2593 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2595 return snd_soc_add_component_controls(&platform
->component
, controls
,
2598 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2601 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2602 * Convenience function to add a list of controls.
2604 * @soc_card: SoC card to add controls to
2605 * @controls: array of controls to add
2606 * @num_controls: number of elements in the array
2608 * Return 0 for success, else error.
2610 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2611 const struct snd_kcontrol_new
*controls
, int num_controls
)
2613 struct snd_card
*card
= soc_card
->snd_card
;
2615 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2618 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2621 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2622 * Convienience function to add a list of controls.
2624 * @dai: DAI to add controls to
2625 * @controls: array of controls to add
2626 * @num_controls: number of elements in the array
2628 * Return 0 for success, else error.
2630 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2631 const struct snd_kcontrol_new
*controls
, int num_controls
)
2633 struct snd_card
*card
= dai
->component
->card
->snd_card
;
2635 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2638 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2641 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2643 * @clk_id: DAI specific clock ID
2644 * @freq: new clock frequency in Hz
2645 * @dir: new clock direction - input/output.
2647 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2649 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2650 unsigned int freq
, int dir
)
2652 if (dai
->driver
->ops
->set_sysclk
)
2653 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2655 return snd_soc_component_set_sysclk(dai
->component
, clk_id
, 0,
2658 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2661 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2663 * @clk_id: DAI specific clock ID
2664 * @source: Source for the clock
2665 * @freq: new clock frequency in Hz
2666 * @dir: new clock direction - input/output.
2668 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2670 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2671 int source
, unsigned int freq
, int dir
)
2673 if (codec
->driver
->set_sysclk
)
2674 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2679 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2682 * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
2683 * @component: COMPONENT
2684 * @clk_id: DAI specific clock ID
2685 * @source: Source for the clock
2686 * @freq: new clock frequency in Hz
2687 * @dir: new clock direction - input/output.
2689 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2691 int snd_soc_component_set_sysclk(struct snd_soc_component
*component
, int clk_id
,
2692 int source
, unsigned int freq
, int dir
)
2694 /* will be removed */
2695 if (component
->set_sysclk
)
2696 return component
->set_sysclk(component
, clk_id
, source
,
2699 if (component
->driver
->set_sysclk
)
2700 return component
->driver
->set_sysclk(component
, clk_id
, source
,
2705 EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk
);
2708 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2710 * @div_id: DAI specific clock divider ID
2711 * @div: new clock divisor.
2713 * Configures the clock dividers. This is used to derive the best DAI bit and
2714 * frame clocks from the system or master clock. It's best to set the DAI bit
2715 * and frame clocks as low as possible to save system power.
2717 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2718 int div_id
, int div
)
2720 if (dai
->driver
->ops
->set_clkdiv
)
2721 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2725 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2728 * snd_soc_dai_set_pll - configure DAI PLL.
2730 * @pll_id: DAI specific PLL ID
2731 * @source: DAI specific source for the PLL
2732 * @freq_in: PLL input clock frequency in Hz
2733 * @freq_out: requested PLL output clock frequency in Hz
2735 * Configures and enables PLL to generate output clock based on input clock.
2737 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2738 unsigned int freq_in
, unsigned int freq_out
)
2740 if (dai
->driver
->ops
->set_pll
)
2741 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2744 return snd_soc_component_set_pll(dai
->component
, pll_id
, source
,
2747 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2750 * snd_soc_codec_set_pll - configure codec PLL.
2752 * @pll_id: DAI specific PLL ID
2753 * @source: DAI specific source for the PLL
2754 * @freq_in: PLL input clock frequency in Hz
2755 * @freq_out: requested PLL output clock frequency in Hz
2757 * Configures and enables PLL to generate output clock based on input clock.
2759 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2760 unsigned int freq_in
, unsigned int freq_out
)
2762 if (codec
->driver
->set_pll
)
2763 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2768 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2771 * snd_soc_component_set_pll - configure component PLL.
2772 * @component: COMPONENT
2773 * @pll_id: DAI specific PLL ID
2774 * @source: DAI specific source for the PLL
2775 * @freq_in: PLL input clock frequency in Hz
2776 * @freq_out: requested PLL output clock frequency in Hz
2778 * Configures and enables PLL to generate output clock based on input clock.
2780 int snd_soc_component_set_pll(struct snd_soc_component
*component
, int pll_id
,
2781 int source
, unsigned int freq_in
,
2782 unsigned int freq_out
)
2784 /* will be removed */
2785 if (component
->set_pll
)
2786 return component
->set_pll(component
, pll_id
, source
,
2789 if (component
->driver
->set_pll
)
2790 return component
->driver
->set_pll(component
, pll_id
, source
,
2795 EXPORT_SYMBOL_GPL(snd_soc_component_set_pll
);
2798 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2800 * @ratio: Ratio of BCLK to Sample rate.
2802 * Configures the DAI for a preset BCLK to sample rate ratio.
2804 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2806 if (dai
->driver
->ops
->set_bclk_ratio
)
2807 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2811 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2814 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2816 * @fmt: SND_SOC_DAIFMT_* format value.
2818 * Configures the DAI hardware format and clocking.
2820 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2822 if (dai
->driver
== NULL
)
2824 if (dai
->driver
->ops
->set_fmt
== NULL
)
2826 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2828 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2831 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2832 * @slots: Number of slots in use.
2833 * @tx_mask: bitmask representing active TX slots.
2834 * @rx_mask: bitmask representing active RX slots.
2836 * Generates the TDM tx and rx slot default masks for DAI.
2838 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2839 unsigned int *tx_mask
,
2840 unsigned int *rx_mask
)
2842 if (*tx_mask
|| *rx_mask
)
2848 *tx_mask
= (1 << slots
) - 1;
2849 *rx_mask
= (1 << slots
) - 1;
2855 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2856 * @dai: The DAI to configure
2857 * @tx_mask: bitmask representing active TX slots.
2858 * @rx_mask: bitmask representing active RX slots.
2859 * @slots: Number of slots in use.
2860 * @slot_width: Width in bits for each slot.
2862 * This function configures the specified DAI for TDM operation. @slot contains
2863 * the total number of slots of the TDM stream and @slot_with the width of each
2864 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2865 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2866 * DAI should write to or read from. If a bit is set the corresponding slot is
2867 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2868 * the first slot, bit 1 to the second slot and so on. The first active slot
2869 * maps to the first channel of the DAI, the second active slot to the second
2870 * channel and so on.
2872 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2873 * @rx_mask and @slot_width will be ignored.
2875 * Returns 0 on success, a negative error code otherwise.
2877 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2878 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2880 if (dai
->driver
->ops
->xlate_tdm_slot_mask
)
2881 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2882 &tx_mask
, &rx_mask
);
2884 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2886 dai
->tx_mask
= tx_mask
;
2887 dai
->rx_mask
= rx_mask
;
2889 if (dai
->driver
->ops
->set_tdm_slot
)
2890 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2895 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2898 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2900 * @tx_num: how many TX channels
2901 * @tx_slot: pointer to an array which imply the TX slot number channel
2903 * @rx_num: how many RX channels
2904 * @rx_slot: pointer to an array which imply the RX slot number channel
2907 * configure the relationship between channel number and TDM slot number.
2909 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2910 unsigned int tx_num
, unsigned int *tx_slot
,
2911 unsigned int rx_num
, unsigned int *rx_slot
)
2913 if (dai
->driver
->ops
->set_channel_map
)
2914 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2919 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2922 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2924 * @tristate: tristate enable
2926 * Tristates the DAI so that others can use it.
2928 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2930 if (dai
->driver
->ops
->set_tristate
)
2931 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2935 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2938 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2940 * @mute: mute enable
2941 * @direction: stream to mute
2943 * Mutes the DAI DAC.
2945 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2951 if (dai
->driver
->ops
->mute_stream
)
2952 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2953 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2954 dai
->driver
->ops
->digital_mute
)
2955 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2959 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2962 * snd_soc_register_card - Register a card with the ASoC core
2964 * @card: Card to register
2967 int snd_soc_register_card(struct snd_soc_card
*card
)
2970 struct snd_soc_pcm_runtime
*rtd
;
2972 if (!card
->name
|| !card
->dev
)
2975 for (i
= 0; i
< card
->num_links
; i
++) {
2976 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2978 ret
= soc_init_dai_link(card
, link
);
2980 dev_err(card
->dev
, "ASoC: failed to init link %s\n",
2986 dev_set_drvdata(card
->dev
, card
);
2988 snd_soc_initialize_card_lists(card
);
2990 INIT_LIST_HEAD(&card
->dai_link_list
);
2991 card
->num_dai_links
= 0;
2993 INIT_LIST_HEAD(&card
->rtd_list
);
2996 INIT_LIST_HEAD(&card
->dapm_dirty
);
2997 INIT_LIST_HEAD(&card
->dobj_list
);
2998 card
->instantiated
= 0;
2999 mutex_init(&card
->mutex
);
3000 mutex_init(&card
->dapm_mutex
);
3002 ret
= snd_soc_instantiate_card(card
);
3006 /* deactivate pins to sleep state */
3007 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
3008 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3011 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
3012 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
3013 if (!codec_dai
->active
)
3014 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
3017 if (!cpu_dai
->active
)
3018 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
3023 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3026 * snd_soc_unregister_card - Unregister a card with the ASoC core
3028 * @card: Card to unregister
3031 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3033 if (card
->instantiated
) {
3034 card
->instantiated
= false;
3035 snd_soc_dapm_shutdown(card
);
3036 soc_cleanup_card_resources(card
);
3037 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3042 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3045 * Simplify DAI link configuration by removing ".-1" from device names
3046 * and sanitizing names.
3048 static char *fmt_single_name(struct device
*dev
, int *id
)
3050 char *found
, name
[NAME_SIZE
];
3053 if (dev_name(dev
) == NULL
)
3056 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3058 /* are we a "%s.%d" name (platform and SPI components) */
3059 found
= strstr(name
, dev
->driver
->name
);
3062 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3064 /* discard ID from name if ID == -1 */
3066 found
[strlen(dev
->driver
->name
)] = '\0';
3070 /* I2C component devices are named "bus-addr" */
3071 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3072 char tmp
[NAME_SIZE
];
3074 /* create unique ID number from I2C addr and bus */
3075 *id
= ((id1
& 0xffff) << 16) + id2
;
3077 /* sanitize component name for DAI link creation */
3078 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3079 strlcpy(name
, tmp
, NAME_SIZE
);
3084 return kstrdup(name
, GFP_KERNEL
);
3088 * Simplify DAI link naming for single devices with multiple DAIs by removing
3089 * any ".-1" and using the DAI name (instead of device name).
3091 static inline char *fmt_multiple_name(struct device
*dev
,
3092 struct snd_soc_dai_driver
*dai_drv
)
3094 if (dai_drv
->name
== NULL
) {
3096 "ASoC: error - multiple DAI %s registered with no name\n",
3101 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3105 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3107 * @component: The component for which the DAIs should be unregistered
3109 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
3111 struct snd_soc_dai
*dai
, *_dai
;
3113 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3114 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3116 list_del(&dai
->list
);
3122 /* Create a DAI and add it to the component's DAI list */
3123 static struct snd_soc_dai
*soc_add_dai(struct snd_soc_component
*component
,
3124 struct snd_soc_dai_driver
*dai_drv
,
3125 bool legacy_dai_naming
)
3127 struct device
*dev
= component
->dev
;
3128 struct snd_soc_dai
*dai
;
3130 dev_dbg(dev
, "ASoC: dynamically register DAI %s\n", dev_name(dev
));
3132 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3137 * Back in the old days when we still had component-less DAIs,
3138 * instead of having a static name, component-less DAIs would
3139 * inherit the name of the parent device so it is possible to
3140 * register multiple instances of the DAI. We still need to keep
3141 * the same naming style even though those DAIs are not
3142 * component-less anymore.
3144 if (legacy_dai_naming
&&
3145 (dai_drv
->id
== 0 || dai_drv
->name
== NULL
)) {
3146 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3148 dai
->name
= fmt_multiple_name(dev
, dai_drv
);
3150 dai
->id
= dai_drv
->id
;
3152 dai
->id
= component
->num_dai
;
3154 if (dai
->name
== NULL
) {
3159 dai
->component
= component
;
3161 dai
->driver
= dai_drv
;
3162 if (!dai
->driver
->ops
)
3163 dai
->driver
->ops
= &null_dai_ops
;
3165 list_add_tail(&dai
->list
, &component
->dai_list
);
3166 component
->num_dai
++;
3168 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3173 * snd_soc_register_dais - Register a DAI with the ASoC core
3175 * @component: The component the DAIs are registered for
3176 * @dai_drv: DAI driver to use for the DAIs
3177 * @count: Number of DAIs
3178 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3181 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3182 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
3183 bool legacy_dai_naming
)
3185 struct device
*dev
= component
->dev
;
3186 struct snd_soc_dai
*dai
;
3190 dev_dbg(dev
, "ASoC: dai register %s #%zu\n", dev_name(dev
), count
);
3192 for (i
= 0; i
< count
; i
++) {
3194 dai
= soc_add_dai(component
, dai_drv
+ i
,
3195 count
== 1 && legacy_dai_naming
);
3205 snd_soc_unregister_dais(component
);
3211 * snd_soc_register_dai - Register a DAI dynamically & create its widgets
3213 * @component: The component the DAIs are registered for
3214 * @dai_drv: DAI driver to use for the DAI
3216 * Topology can use this API to register DAIs when probing a component.
3217 * These DAIs's widgets will be freed in the card cleanup and the DAIs
3218 * will be freed in the component cleanup.
3220 int snd_soc_register_dai(struct snd_soc_component
*component
,
3221 struct snd_soc_dai_driver
*dai_drv
)
3223 struct snd_soc_dapm_context
*dapm
=
3224 snd_soc_component_get_dapm(component
);
3225 struct snd_soc_dai
*dai
;
3228 if (dai_drv
->dobj
.type
!= SND_SOC_DOBJ_PCM
) {
3229 dev_err(component
->dev
, "Invalid dai type %d\n",
3230 dai_drv
->dobj
.type
);
3234 lockdep_assert_held(&client_mutex
);
3235 dai
= soc_add_dai(component
, dai_drv
, false);
3239 /* Create the DAI widgets here. After adding DAIs, topology may
3240 * also add routes that need these widgets as source or sink.
3242 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
3244 dev_err(component
->dev
,
3245 "Failed to create DAI widgets %d\n", ret
);
3250 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3252 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
3253 enum snd_soc_dapm_type type
, int subseq
)
3255 struct snd_soc_component
*component
= dapm
->component
;
3257 component
->driver
->seq_notifier(component
, type
, subseq
);
3260 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
3263 struct snd_soc_component
*component
= dapm
->component
;
3265 return component
->driver
->stream_event(component
, event
);
3268 static int snd_soc_component_drv_pcm_new(struct snd_soc_component
*component
,
3269 struct snd_soc_pcm_runtime
*rtd
)
3271 if (component
->driver
->pcm_new
)
3272 return component
->driver
->pcm_new(rtd
);
3277 static void snd_soc_component_drv_pcm_free(struct snd_soc_component
*component
,
3278 struct snd_pcm
*pcm
)
3280 if (component
->driver
->pcm_free
)
3281 component
->driver
->pcm_free(pcm
);
3284 static int snd_soc_component_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3285 enum snd_soc_bias_level level
)
3287 struct snd_soc_component
*component
= dapm
->component
;
3289 return component
->driver
->set_bias_level(component
, level
);
3292 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
3293 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
3295 struct snd_soc_dapm_context
*dapm
;
3297 component
->name
= fmt_single_name(dev
, &component
->id
);
3298 if (!component
->name
) {
3299 dev_err(dev
, "ASoC: Failed to allocate name\n");
3303 component
->dev
= dev
;
3304 component
->driver
= driver
;
3305 component
->probe
= component
->driver
->probe
;
3306 component
->remove
= component
->driver
->remove
;
3307 component
->suspend
= component
->driver
->suspend
;
3308 component
->resume
= component
->driver
->resume
;
3309 component
->set_sysclk
= component
->driver
->set_sysclk
;
3310 component
->set_pll
= component
->driver
->set_pll
;
3311 component
->set_jack
= component
->driver
->set_jack
;
3312 component
->pcm_new
= snd_soc_component_drv_pcm_new
;
3313 component
->pcm_free
= snd_soc_component_drv_pcm_free
;
3315 dapm
= snd_soc_component_get_dapm(component
);
3317 dapm
->component
= component
;
3318 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
3319 dapm
->idle_bias_off
= !driver
->idle_bias_on
;
3320 dapm
->suspend_bias_off
= driver
->suspend_bias_off
;
3321 if (driver
->seq_notifier
)
3322 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
3323 if (driver
->stream_event
)
3324 dapm
->stream_event
= snd_soc_component_stream_event
;
3325 if (driver
->set_bias_level
)
3326 dapm
->set_bias_level
= snd_soc_component_set_bias_level
;
3328 INIT_LIST_HEAD(&component
->dai_list
);
3329 mutex_init(&component
->io_mutex
);
3334 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
3336 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
3338 /* Errors are legitimate for non-integer byte multiples */
3340 component
->val_bytes
= val_bytes
;
3343 #ifdef CONFIG_REGMAP
3346 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
3347 * @component: The component for which to initialize the regmap instance
3348 * @regmap: The regmap instance that should be used by the component
3350 * This function allows deferred assignment of the regmap instance that is
3351 * associated with the component. Only use this if the regmap instance is not
3352 * yet ready when the component is registered. The function must also be called
3353 * before the first IO attempt of the component.
3355 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
3356 struct regmap
*regmap
)
3358 component
->regmap
= regmap
;
3359 snd_soc_component_setup_regmap(component
);
3361 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
3364 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
3365 * @component: The component for which to de-initialize the regmap instance
3367 * Calls regmap_exit() on the regmap instance associated to the component and
3368 * removes the regmap instance from the component.
3370 * This function should only be used if snd_soc_component_init_regmap() was used
3371 * to initialize the regmap instance.
3373 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
3375 regmap_exit(component
->regmap
);
3376 component
->regmap
= NULL
;
3378 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
3382 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
3384 if (!component
->write
&& !component
->read
) {
3385 if (!component
->regmap
)
3386 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
3387 if (component
->regmap
)
3388 snd_soc_component_setup_regmap(component
);
3391 list_add(&component
->list
, &component_list
);
3392 INIT_LIST_HEAD(&component
->dobj_list
);
3395 static void snd_soc_component_add(struct snd_soc_component
*component
)
3397 mutex_lock(&client_mutex
);
3398 snd_soc_component_add_unlocked(component
);
3399 mutex_unlock(&client_mutex
);
3402 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
3404 snd_soc_unregister_dais(component
);
3405 kfree(component
->name
);
3408 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
3410 struct snd_soc_card
*card
= component
->card
;
3413 snd_soc_unregister_card(card
);
3415 list_del(&component
->list
);
3418 #define ENDIANNESS_MAP(name) \
3419 (SNDRV_PCM_FMTBIT_##name##LE | SNDRV_PCM_FMTBIT_##name##BE)
3420 static u64 endianness_format_map
[] = {
3421 ENDIANNESS_MAP(S16_
),
3422 ENDIANNESS_MAP(U16_
),
3423 ENDIANNESS_MAP(S24_
),
3424 ENDIANNESS_MAP(U24_
),
3425 ENDIANNESS_MAP(S32_
),
3426 ENDIANNESS_MAP(U32_
),
3427 ENDIANNESS_MAP(S24_3
),
3428 ENDIANNESS_MAP(U24_3
),
3429 ENDIANNESS_MAP(S20_3
),
3430 ENDIANNESS_MAP(U20_3
),
3431 ENDIANNESS_MAP(S18_3
),
3432 ENDIANNESS_MAP(U18_3
),
3433 ENDIANNESS_MAP(FLOAT_
),
3434 ENDIANNESS_MAP(FLOAT64_
),
3435 ENDIANNESS_MAP(IEC958_SUBFRAME_
),
3439 * Fix up the DAI formats for endianness: codecs don't actually see
3440 * the endianness of the data but we're using the CPU format
3441 * definitions which do need to include endianness so we ensure that
3442 * codec DAIs always have both big and little endian variants set.
3444 static void convert_endianness_formats(struct snd_soc_pcm_stream
*stream
)
3448 for (i
= 0; i
< ARRAY_SIZE(endianness_format_map
); i
++)
3449 if (stream
->formats
& endianness_format_map
[i
])
3450 stream
->formats
|= endianness_format_map
[i
];
3453 int snd_soc_add_component(struct device
*dev
,
3454 struct snd_soc_component
*component
,
3455 const struct snd_soc_component_driver
*component_driver
,
3456 struct snd_soc_dai_driver
*dai_drv
,
3462 ret
= snd_soc_component_initialize(component
, component_driver
, dev
);
3466 component
->ignore_pmdown_time
= true;
3467 component
->registered_as_component
= true;
3469 if (component_driver
->endianness
) {
3470 for (i
= 0; i
< num_dai
; i
++) {
3471 convert_endianness_formats(&dai_drv
[i
].playback
);
3472 convert_endianness_formats(&dai_drv
[i
].capture
);
3476 ret
= snd_soc_register_dais(component
, dai_drv
, num_dai
,
3477 !component_driver
->non_legacy_dai_naming
);
3479 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3483 snd_soc_component_add(component
);
3488 snd_soc_component_cleanup(component
);
3493 EXPORT_SYMBOL_GPL(snd_soc_add_component
);
3495 int snd_soc_register_component(struct device
*dev
,
3496 const struct snd_soc_component_driver
*component_driver
,
3497 struct snd_soc_dai_driver
*dai_drv
,
3500 struct snd_soc_component
*component
;
3502 component
= kzalloc(sizeof(*component
), GFP_KERNEL
);
3506 return snd_soc_add_component(dev
, component
, component_driver
,
3509 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
3512 * snd_soc_unregister_component - Unregister all related component
3513 * from the ASoC core
3515 * @dev: The device to unregister
3517 static int __snd_soc_unregister_component(struct device
*dev
)
3519 struct snd_soc_component
*component
;
3522 mutex_lock(&client_mutex
);
3523 list_for_each_entry(component
, &component_list
, list
) {
3524 if (dev
!= component
->dev
||
3525 !component
->registered_as_component
)
3528 snd_soc_tplg_component_remove(component
, SND_SOC_TPLG_INDEX_ALL
);
3529 snd_soc_component_del_unlocked(component
);
3533 mutex_unlock(&client_mutex
);
3536 snd_soc_component_cleanup(component
);
3543 void snd_soc_unregister_component(struct device
*dev
)
3545 while (__snd_soc_unregister_component(dev
));
3547 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
3549 struct snd_soc_component
*snd_soc_lookup_component(struct device
*dev
,
3550 const char *driver_name
)
3552 struct snd_soc_component
*component
;
3553 struct snd_soc_component
*ret
;
3556 mutex_lock(&client_mutex
);
3557 list_for_each_entry(component
, &component_list
, list
) {
3558 if (dev
!= component
->dev
)
3562 (driver_name
!= component
->driver
->name
) &&
3563 (strcmp(component
->driver
->name
, driver_name
) != 0))
3569 mutex_unlock(&client_mutex
);
3573 EXPORT_SYMBOL_GPL(snd_soc_lookup_component
);
3575 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
3577 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3579 return platform
->driver
->probe(platform
);
3582 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
3584 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3586 platform
->driver
->remove(platform
);
3589 static int snd_soc_platform_drv_pcm_new(struct snd_soc_component
*component
,
3590 struct snd_soc_pcm_runtime
*rtd
)
3592 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3594 if (platform
->driver
->pcm_new
)
3595 return platform
->driver
->pcm_new(rtd
);
3600 static void snd_soc_platform_drv_pcm_free(struct snd_soc_component
*component
,
3601 struct snd_pcm
*pcm
)
3603 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
3605 if (platform
->driver
->pcm_free
)
3606 platform
->driver
->pcm_free(pcm
);
3610 * snd_soc_add_platform - Add a platform to the ASoC core
3611 * @dev: The parent device for the platform
3612 * @platform: The platform to add
3613 * @platform_drv: The driver for the platform
3615 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3616 const struct snd_soc_platform_driver
*platform_drv
)
3620 ret
= snd_soc_component_initialize(&platform
->component
,
3621 &platform_drv
->component_driver
, dev
);
3625 platform
->dev
= dev
;
3626 platform
->driver
= platform_drv
;
3628 if (platform_drv
->probe
)
3629 platform
->component
.probe
= snd_soc_platform_drv_probe
;
3630 if (platform_drv
->remove
)
3631 platform
->component
.remove
= snd_soc_platform_drv_remove
;
3632 if (platform_drv
->pcm_new
)
3633 platform
->component
.pcm_new
= snd_soc_platform_drv_pcm_new
;
3634 if (platform_drv
->pcm_free
)
3635 platform
->component
.pcm_free
= snd_soc_platform_drv_pcm_free
;
3637 #ifdef CONFIG_DEBUG_FS
3638 platform
->component
.debugfs_prefix
= "platform";
3641 mutex_lock(&client_mutex
);
3642 snd_soc_component_add_unlocked(&platform
->component
);
3643 list_add(&platform
->list
, &platform_list
);
3644 mutex_unlock(&client_mutex
);
3646 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
3647 platform
->component
.name
);
3651 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3654 * snd_soc_register_platform - Register a platform with the ASoC core
3656 * @dev: The device for the platform
3657 * @platform_drv: The driver for the platform
3659 int snd_soc_register_platform(struct device
*dev
,
3660 const struct snd_soc_platform_driver
*platform_drv
)
3662 struct snd_soc_platform
*platform
;
3665 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3667 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3668 if (platform
== NULL
)
3671 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3677 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3680 * snd_soc_remove_platform - Remove a platform from the ASoC core
3681 * @platform: the platform to remove
3683 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
3686 mutex_lock(&client_mutex
);
3687 list_del(&platform
->list
);
3688 snd_soc_component_del_unlocked(&platform
->component
);
3689 mutex_unlock(&client_mutex
);
3691 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
3692 platform
->component
.name
);
3694 snd_soc_component_cleanup(&platform
->component
);
3696 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
3698 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
3700 struct snd_soc_platform
*platform
;
3702 mutex_lock(&client_mutex
);
3703 list_for_each_entry(platform
, &platform_list
, list
) {
3704 if (dev
== platform
->dev
) {
3705 mutex_unlock(&client_mutex
);
3709 mutex_unlock(&client_mutex
);
3713 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
3716 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3718 * @dev: platform to unregister
3720 void snd_soc_unregister_platform(struct device
*dev
)
3722 struct snd_soc_platform
*platform
;
3724 platform
= snd_soc_lookup_platform(dev
);
3728 snd_soc_remove_platform(platform
);
3731 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3733 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
3735 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3737 return codec
->driver
->probe(codec
);
3740 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
3742 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3744 codec
->driver
->remove(codec
);
3747 static int snd_soc_codec_drv_suspend(struct snd_soc_component
*component
)
3749 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3751 return codec
->driver
->suspend(codec
);
3754 static int snd_soc_codec_drv_resume(struct snd_soc_component
*component
)
3756 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3758 return codec
->driver
->resume(codec
);
3761 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
3762 unsigned int reg
, unsigned int val
)
3764 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3766 return codec
->driver
->write(codec
, reg
, val
);
3769 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
3770 unsigned int reg
, unsigned int *val
)
3772 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3774 *val
= codec
->driver
->read(codec
, reg
);
3779 static int snd_soc_codec_set_sysclk_(struct snd_soc_component
*component
,
3780 int clk_id
, int source
, unsigned int freq
, int dir
)
3782 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3784 return snd_soc_codec_set_sysclk(codec
, clk_id
, source
, freq
, dir
);
3787 static int snd_soc_codec_set_pll_(struct snd_soc_component
*component
,
3788 int pll_id
, int source
, unsigned int freq_in
,
3789 unsigned int freq_out
)
3791 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3793 return snd_soc_codec_set_pll(codec
, pll_id
, source
, freq_in
, freq_out
);
3796 static int snd_soc_codec_set_jack_(struct snd_soc_component
*component
,
3797 struct snd_soc_jack
*jack
, void *data
)
3799 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
3801 return snd_soc_codec_set_jack(codec
, jack
, data
);
3804 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
3805 enum snd_soc_bias_level level
)
3807 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
3809 return codec
->driver
->set_bias_level(codec
, level
);
3813 * snd_soc_register_codec - Register a codec with the ASoC core
3815 * @dev: The parent device for this codec
3816 * @codec_drv: Codec driver
3817 * @dai_drv: The associated DAI driver
3818 * @num_dai: Number of DAIs
3820 int snd_soc_register_codec(struct device
*dev
,
3821 const struct snd_soc_codec_driver
*codec_drv
,
3822 struct snd_soc_dai_driver
*dai_drv
,
3825 struct snd_soc_dapm_context
*dapm
;
3826 struct snd_soc_codec
*codec
;
3827 struct snd_soc_dai
*dai
;
3830 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3832 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3836 codec
->component
.codec
= codec
;
3838 ret
= snd_soc_component_initialize(&codec
->component
,
3839 &codec_drv
->component_driver
, dev
);
3843 if (codec_drv
->probe
)
3844 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3845 if (codec_drv
->remove
)
3846 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3847 if (codec_drv
->suspend
)
3848 codec
->component
.suspend
= snd_soc_codec_drv_suspend
;
3849 if (codec_drv
->resume
)
3850 codec
->component
.resume
= snd_soc_codec_drv_resume
;
3851 if (codec_drv
->write
)
3852 codec
->component
.write
= snd_soc_codec_drv_write
;
3853 if (codec_drv
->read
)
3854 codec
->component
.read
= snd_soc_codec_drv_read
;
3855 if (codec_drv
->set_sysclk
)
3856 codec
->component
.set_sysclk
= snd_soc_codec_set_sysclk_
;
3857 if (codec_drv
->set_pll
)
3858 codec
->component
.set_pll
= snd_soc_codec_set_pll_
;
3859 if (codec_drv
->set_jack
)
3860 codec
->component
.set_jack
= snd_soc_codec_set_jack_
;
3861 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3863 dapm
= snd_soc_codec_get_dapm(codec
);
3864 dapm
->idle_bias_off
= codec_drv
->idle_bias_off
;
3865 dapm
->suspend_bias_off
= codec_drv
->suspend_bias_off
;
3866 if (codec_drv
->seq_notifier
)
3867 dapm
->seq_notifier
= codec_drv
->seq_notifier
;
3868 if (codec_drv
->set_bias_level
)
3869 dapm
->set_bias_level
= snd_soc_codec_set_bias_level
;
3871 codec
->driver
= codec_drv
;
3872 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3874 #ifdef CONFIG_DEBUG_FS
3875 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3876 codec
->component
.debugfs_prefix
= "codec";
3879 if (codec_drv
->get_regmap
)
3880 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3882 for (i
= 0; i
< num_dai
; i
++) {
3883 convert_endianness_formats(&dai_drv
[i
].playback
);
3884 convert_endianness_formats(&dai_drv
[i
].capture
);
3887 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3889 dev_err(dev
, "ASoC: Failed to register DAIs: %d\n", ret
);
3893 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3896 mutex_lock(&client_mutex
);
3897 snd_soc_component_add_unlocked(&codec
->component
);
3898 list_add(&codec
->list
, &codec_list
);
3899 mutex_unlock(&client_mutex
);
3901 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3902 codec
->component
.name
);
3906 snd_soc_component_cleanup(&codec
->component
);
3911 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3914 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3916 * @dev: codec to unregister
3918 void snd_soc_unregister_codec(struct device
*dev
)
3920 struct snd_soc_codec
*codec
;
3922 mutex_lock(&client_mutex
);
3923 list_for_each_entry(codec
, &codec_list
, list
) {
3924 if (dev
== codec
->dev
)
3927 mutex_unlock(&client_mutex
);
3931 list_del(&codec
->list
);
3932 snd_soc_component_del_unlocked(&codec
->component
);
3933 mutex_unlock(&client_mutex
);
3935 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3936 codec
->component
.name
);
3938 snd_soc_component_cleanup(&codec
->component
);
3939 snd_soc_cache_exit(codec
);
3942 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3944 /* Retrieve a card's name from device tree */
3945 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3946 const char *propname
)
3948 struct device_node
*np
;
3952 pr_err("card->dev is not set before calling %s\n", __func__
);
3956 np
= card
->dev
->of_node
;
3958 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3960 * EINVAL means the property does not exist. This is fine providing
3961 * card->name was previously set, which is checked later in
3962 * snd_soc_register_card.
3964 if (ret
< 0 && ret
!= -EINVAL
) {
3966 "ASoC: Property '%s' could not be read: %d\n",
3973 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3975 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3976 SND_SOC_DAPM_MIC("Microphone", NULL
),
3977 SND_SOC_DAPM_LINE("Line", NULL
),
3978 SND_SOC_DAPM_HP("Headphone", NULL
),
3979 SND_SOC_DAPM_SPK("Speaker", NULL
),
3982 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3983 const char *propname
)
3985 struct device_node
*np
= card
->dev
->of_node
;
3986 struct snd_soc_dapm_widget
*widgets
;
3987 const char *template, *wname
;
3988 int i
, j
, num_widgets
, ret
;
3990 num_widgets
= of_property_count_strings(np
, propname
);
3991 if (num_widgets
< 0) {
3993 "ASoC: Property '%s' does not exist\n", propname
);
3996 if (num_widgets
& 1) {
3998 "ASoC: Property '%s' length is not even\n", propname
);
4004 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4009 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
4013 "ASoC: Could not allocate memory for widgets\n");
4017 for (i
= 0; i
< num_widgets
; i
++) {
4018 ret
= of_property_read_string_index(np
, propname
,
4022 "ASoC: Property '%s' index %d read error:%d\n",
4023 propname
, 2 * i
, ret
);
4027 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
4028 if (!strncmp(template, simple_widgets
[j
].name
,
4029 strlen(simple_widgets
[j
].name
))) {
4030 widgets
[i
] = simple_widgets
[j
];
4035 if (j
>= ARRAY_SIZE(simple_widgets
)) {
4037 "ASoC: DAPM widget '%s' is not supported\n",
4042 ret
= of_property_read_string_index(np
, propname
,
4047 "ASoC: Property '%s' index %d read error:%d\n",
4048 propname
, (2 * i
) + 1, ret
);
4052 widgets
[i
].name
= wname
;
4055 card
->of_dapm_widgets
= widgets
;
4056 card
->num_of_dapm_widgets
= num_widgets
;
4060 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
4062 static int snd_soc_of_get_slot_mask(struct device_node
*np
,
4063 const char *prop_name
,
4067 const __be32
*of_slot_mask
= of_get_property(np
, prop_name
, &val
);
4073 for (i
= 0; i
< val
; i
++)
4074 if (be32_to_cpup(&of_slot_mask
[i
]))
4080 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
4081 unsigned int *tx_mask
,
4082 unsigned int *rx_mask
,
4083 unsigned int *slots
,
4084 unsigned int *slot_width
)
4090 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-tx-mask", tx_mask
);
4092 snd_soc_of_get_slot_mask(np
, "dai-tdm-slot-rx-mask", rx_mask
);
4094 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
4095 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
4103 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
4104 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
4114 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4116 void snd_soc_of_parse_audio_prefix(struct snd_soc_card
*card
,
4117 struct snd_soc_codec_conf
*codec_conf
,
4118 struct device_node
*of_node
,
4119 const char *propname
)
4121 struct device_node
*np
= card
->dev
->of_node
;
4125 ret
= of_property_read_string(np
, propname
, &str
);
4127 /* no prefix is not error */
4131 codec_conf
->of_node
= of_node
;
4132 codec_conf
->name_prefix
= str
;
4134 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix
);
4136 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4137 const char *propname
)
4139 struct device_node
*np
= card
->dev
->of_node
;
4141 struct snd_soc_dapm_route
*routes
;
4144 num_routes
= of_property_count_strings(np
, propname
);
4145 if (num_routes
< 0 || num_routes
& 1) {
4147 "ASoC: Property '%s' does not exist or its length is not even\n",
4153 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4158 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4162 "ASoC: Could not allocate DAPM route table\n");
4166 for (i
= 0; i
< num_routes
; i
++) {
4167 ret
= of_property_read_string_index(np
, propname
,
4168 2 * i
, &routes
[i
].sink
);
4171 "ASoC: Property '%s' index %d could not be read: %d\n",
4172 propname
, 2 * i
, ret
);
4175 ret
= of_property_read_string_index(np
, propname
,
4176 (2 * i
) + 1, &routes
[i
].source
);
4179 "ASoC: Property '%s' index %d could not be read: %d\n",
4180 propname
, (2 * i
) + 1, ret
);
4185 card
->num_of_dapm_routes
= num_routes
;
4186 card
->of_dapm_routes
= routes
;
4190 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4192 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4194 struct device_node
**bitclkmaster
,
4195 struct device_node
**framemaster
)
4199 unsigned int format
= 0;
4205 } of_fmt_table
[] = {
4206 { "i2s", SND_SOC_DAIFMT_I2S
},
4207 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4208 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4209 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4210 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4211 { "ac97", SND_SOC_DAIFMT_AC97
},
4212 { "pdm", SND_SOC_DAIFMT_PDM
},
4213 { "msb", SND_SOC_DAIFMT_MSB
},
4214 { "lsb", SND_SOC_DAIFMT_LSB
},
4221 * check "dai-format = xxx"
4222 * or "[prefix]format = xxx"
4223 * SND_SOC_DAIFMT_FORMAT_MASK area
4225 ret
= of_property_read_string(np
, "dai-format", &str
);
4227 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4228 ret
= of_property_read_string(np
, prop
, &str
);
4231 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4232 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4233 format
|= of_fmt_table
[i
].val
;
4240 * check "[prefix]continuous-clock"
4241 * SND_SOC_DAIFMT_CLOCK_MASK area
4243 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4244 if (of_property_read_bool(np
, prop
))
4245 format
|= SND_SOC_DAIFMT_CONT
;
4247 format
|= SND_SOC_DAIFMT_GATED
;
4250 * check "[prefix]bitclock-inversion"
4251 * check "[prefix]frame-inversion"
4252 * SND_SOC_DAIFMT_INV_MASK area
4254 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4255 bit
= !!of_get_property(np
, prop
, NULL
);
4257 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4258 frame
= !!of_get_property(np
, prop
, NULL
);
4260 switch ((bit
<< 4) + frame
) {
4262 format
|= SND_SOC_DAIFMT_IB_IF
;
4265 format
|= SND_SOC_DAIFMT_IB_NF
;
4268 format
|= SND_SOC_DAIFMT_NB_IF
;
4271 /* SND_SOC_DAIFMT_NB_NF is default */
4276 * check "[prefix]bitclock-master"
4277 * check "[prefix]frame-master"
4278 * SND_SOC_DAIFMT_MASTER_MASK area
4280 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4281 bit
= !!of_get_property(np
, prop
, NULL
);
4282 if (bit
&& bitclkmaster
)
4283 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
4285 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4286 frame
= !!of_get_property(np
, prop
, NULL
);
4287 if (frame
&& framemaster
)
4288 *framemaster
= of_parse_phandle(np
, prop
, 0);
4290 switch ((bit
<< 4) + frame
) {
4292 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4295 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4298 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4301 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4307 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4309 int snd_soc_get_dai_id(struct device_node
*ep
)
4311 struct snd_soc_component
*pos
;
4312 struct device_node
*node
;
4315 node
= of_graph_get_port_parent(ep
);
4318 * For example HDMI case, HDMI has video/sound port,
4319 * but ALSA SoC needs sound port number only.
4320 * Thus counting HDMI DT port/endpoint doesn't work.
4321 * Then, it should have .of_xlate_dai_id
4324 mutex_lock(&client_mutex
);
4325 list_for_each_entry(pos
, &component_list
, list
) {
4326 struct device_node
*component_of_node
= pos
->dev
->of_node
;
4328 if (!component_of_node
&& pos
->dev
->parent
)
4329 component_of_node
= pos
->dev
->parent
->of_node
;
4331 if (component_of_node
!= node
)
4334 if (pos
->driver
->of_xlate_dai_id
)
4335 ret
= pos
->driver
->of_xlate_dai_id(pos
, ep
);
4339 mutex_unlock(&client_mutex
);
4345 EXPORT_SYMBOL_GPL(snd_soc_get_dai_id
);
4347 int snd_soc_get_dai_name(struct of_phandle_args
*args
,
4348 const char **dai_name
)
4350 struct snd_soc_component
*pos
;
4351 struct device_node
*component_of_node
;
4352 int ret
= -EPROBE_DEFER
;
4354 mutex_lock(&client_mutex
);
4355 list_for_each_entry(pos
, &component_list
, list
) {
4356 component_of_node
= pos
->dev
->of_node
;
4357 if (!component_of_node
&& pos
->dev
->parent
)
4358 component_of_node
= pos
->dev
->parent
->of_node
;
4360 if (component_of_node
!= args
->np
)
4363 if (pos
->driver
->of_xlate_dai_name
) {
4364 ret
= pos
->driver
->of_xlate_dai_name(pos
,
4368 struct snd_soc_dai
*dai
;
4371 switch (args
->args_count
) {
4373 id
= 0; /* same as dai_drv[0] */
4383 if (id
< 0 || id
>= pos
->num_dai
) {
4390 /* find target DAI */
4391 list_for_each_entry(dai
, &pos
->dai_list
, list
) {
4397 *dai_name
= dai
->driver
->name
;
4399 *dai_name
= pos
->name
;
4404 mutex_unlock(&client_mutex
);
4407 EXPORT_SYMBOL_GPL(snd_soc_get_dai_name
);
4409 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4410 const char **dai_name
)
4412 struct of_phandle_args args
;
4415 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4416 "#sound-dai-cells", 0, &args
);
4420 ret
= snd_soc_get_dai_name(&args
, dai_name
);
4422 of_node_put(args
.np
);
4426 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4429 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
4431 * @of_node: Device node
4432 * @dai_link: DAI link
4434 * Builds an array of CODEC DAI components from the DAI link property
4436 * The array is set in the DAI link and the number of DAIs is set accordingly.
4437 * The device nodes in the array (of_node) must be dereferenced by the caller.
4439 * Returns 0 for success
4441 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
4442 struct device_node
*of_node
,
4443 struct snd_soc_dai_link
*dai_link
)
4445 struct of_phandle_args args
;
4446 struct snd_soc_dai_link_component
*component
;
4448 int index
, num_codecs
, ret
;
4450 /* Count the number of CODECs */
4452 num_codecs
= of_count_phandle_with_args(of_node
, name
,
4453 "#sound-dai-cells");
4454 if (num_codecs
<= 0) {
4455 if (num_codecs
== -ENOENT
)
4456 dev_err(dev
, "No 'sound-dai' property\n");
4458 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
4461 component
= devm_kzalloc(dev
,
4462 sizeof *component
* num_codecs
,
4466 dai_link
->codecs
= component
;
4467 dai_link
->num_codecs
= num_codecs
;
4469 /* Parse the list */
4470 for (index
= 0, component
= dai_link
->codecs
;
4471 index
< dai_link
->num_codecs
;
4472 index
++, component
++) {
4473 ret
= of_parse_phandle_with_args(of_node
, name
,
4478 component
->of_node
= args
.np
;
4479 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
4485 for (index
= 0, component
= dai_link
->codecs
;
4486 index
< dai_link
->num_codecs
;
4487 index
++, component
++) {
4488 if (!component
->of_node
)
4490 of_node_put(component
->of_node
);
4491 component
->of_node
= NULL
;
4493 dai_link
->codecs
= NULL
;
4494 dai_link
->num_codecs
= 0;
4497 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
4499 static int __init
snd_soc_init(void)
4501 snd_soc_debugfs_init();
4502 snd_soc_util_init();
4504 return platform_driver_register(&soc_driver
);
4506 module_init(snd_soc_init
);
4508 static void __exit
snd_soc_exit(void)
4510 snd_soc_util_exit();
4511 snd_soc_debugfs_exit();
4513 platform_driver_unregister(&soc_driver
);
4515 module_exit(snd_soc_exit
);
4517 /* Module information */
4518 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4519 MODULE_DESCRIPTION("ALSA SoC Core");
4520 MODULE_LICENSE("GPL");
4521 MODULE_ALIAS("platform:soc-audio");