2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 #ifdef CONFIG_DEBUG_FS
51 struct dentry
*snd_soc_debugfs_root
;
52 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
55 static DEFINE_MUTEX(client_mutex
);
56 static LIST_HEAD(platform_list
);
57 static LIST_HEAD(codec_list
);
58 static LIST_HEAD(component_list
);
61 * This is a timeout to do a DAPM powerdown after a stream is closed().
62 * It can be used to eliminate pops between different playback streams, e.g.
63 * between two audio tracks.
65 static int pmdown_time
= 5000;
66 module_param(pmdown_time
, int, 0);
67 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
69 /* returns the minimum number of bytes needed to represent
70 * a particular given value */
71 static int min_bytes_needed(unsigned long val
)
76 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
79 c
= (sizeof val
* 8) - c
;
87 /* fill buf which is 'len' bytes with a formatted
88 * string of the form 'reg: value\n' */
89 static int format_register_str(struct snd_soc_codec
*codec
,
90 unsigned int reg
, char *buf
, size_t len
)
92 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
93 int regsize
= codec
->driver
->reg_word_size
* 2;
96 char regbuf
[regsize
+ 1];
98 /* since tmpbuf is allocated on the stack, warn the callers if they
99 * try to abuse this function */
102 /* +2 for ': ' and + 1 for '\n' */
103 if (wordsize
+ regsize
+ 2 + 1 != len
)
106 ret
= snd_soc_read(codec
, reg
);
108 memset(regbuf
, 'X', regsize
);
109 regbuf
[regsize
] = '\0';
111 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
114 /* prepare the buffer */
115 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
116 /* copy it back to the caller without the '\0' */
117 memcpy(buf
, tmpbuf
, len
);
122 /* codec register dump */
123 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
124 size_t count
, loff_t pos
)
127 int wordsize
, regsize
;
132 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
133 regsize
= codec
->driver
->reg_word_size
* 2;
135 len
= wordsize
+ regsize
+ 2 + 1;
137 if (!codec
->driver
->reg_cache_size
)
140 if (codec
->driver
->reg_cache_step
)
141 step
= codec
->driver
->reg_cache_step
;
143 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
144 /* only support larger than PAGE_SIZE bytes debugfs
145 * entries for the default case */
147 if (total
+ len
>= count
- 1)
149 format_register_str(codec
, i
, buf
+ total
, len
);
155 total
= min(total
, count
- 1);
160 static ssize_t
codec_reg_show(struct device
*dev
,
161 struct device_attribute
*attr
, char *buf
)
163 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
165 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
168 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
170 static ssize_t
pmdown_time_show(struct device
*dev
,
171 struct device_attribute
*attr
, char *buf
)
173 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
175 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
178 static ssize_t
pmdown_time_set(struct device
*dev
,
179 struct device_attribute
*attr
,
180 const char *buf
, size_t count
)
182 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
185 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
192 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
194 static struct attribute
*soc_dev_attrs
[] = {
195 &dev_attr_codec_reg
.attr
,
196 &dev_attr_pmdown_time
.attr
,
200 static umode_t
soc_dev_attr_is_visible(struct kobject
*kobj
,
201 struct attribute
*attr
, int idx
)
203 struct device
*dev
= kobj_to_dev(kobj
);
204 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
206 if (attr
== &dev_attr_pmdown_time
.attr
)
207 return attr
->mode
; /* always visible */
208 return rtd
->codec
? attr
->mode
: 0; /* enabled only with codec */
211 static const struct attribute_group soc_dapm_dev_group
= {
212 .attrs
= soc_dapm_dev_attrs
,
213 .is_visible
= soc_dev_attr_is_visible
,
216 static const struct attribute_group soc_dev_roup
= {
217 .attrs
= soc_dev_attrs
,
218 .is_visible
= soc_dev_attr_is_visible
,
221 static const struct attribute_group
*soc_dev_attr_groups
[] = {
227 #ifdef CONFIG_DEBUG_FS
228 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
229 size_t count
, loff_t
*ppos
)
232 struct snd_soc_codec
*codec
= file
->private_data
;
235 if (*ppos
< 0 || !count
)
238 buf
= kmalloc(count
, GFP_KERNEL
);
242 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
244 if (copy_to_user(user_buf
, buf
, ret
)) {
255 static ssize_t
codec_reg_write_file(struct file
*file
,
256 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
261 unsigned long reg
, value
;
262 struct snd_soc_codec
*codec
= file
->private_data
;
265 buf_size
= min(count
, (sizeof(buf
)-1));
266 if (copy_from_user(buf
, user_buf
, buf_size
))
270 while (*start
== ' ')
272 reg
= simple_strtoul(start
, &start
, 16);
273 while (*start
== ' ')
275 ret
= kstrtoul(start
, 16, &value
);
279 /* Userspace has been fiddling around behind the kernel's back */
280 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
282 snd_soc_write(codec
, reg
, value
);
286 static const struct file_operations codec_reg_fops
= {
288 .read
= codec_reg_read_file
,
289 .write
= codec_reg_write_file
,
290 .llseek
= default_llseek
,
293 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
295 if (component
->debugfs_prefix
) {
298 name
= kasprintf(GFP_KERNEL
, "%s:%s",
299 component
->debugfs_prefix
, component
->name
);
301 component
->debugfs_root
= debugfs_create_dir(name
,
302 component
->card
->debugfs_card_root
);
306 component
->debugfs_root
= debugfs_create_dir(component
->name
,
307 component
->card
->debugfs_card_root
);
310 if (!component
->debugfs_root
) {
311 dev_warn(component
->dev
,
312 "ASoC: Failed to create component debugfs directory\n");
316 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
317 component
->debugfs_root
);
319 if (component
->init_debugfs
)
320 component
->init_debugfs(component
);
323 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
325 debugfs_remove_recursive(component
->debugfs_root
);
328 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
330 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
332 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
333 codec
->component
.debugfs_root
,
334 codec
, &codec_reg_fops
);
335 if (!codec
->debugfs_reg
)
337 "ASoC: Failed to create codec register debugfs file\n");
340 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
341 size_t count
, loff_t
*ppos
)
343 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
344 ssize_t len
, ret
= 0;
345 struct snd_soc_codec
*codec
;
350 list_for_each_entry(codec
, &codec_list
, list
) {
351 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
352 codec
->component
.name
);
355 if (ret
> PAGE_SIZE
) {
362 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
369 static const struct file_operations codec_list_fops
= {
370 .read
= codec_list_read_file
,
371 .llseek
= default_llseek
,/* read accesses f_pos */
374 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
375 size_t count
, loff_t
*ppos
)
377 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
378 ssize_t len
, ret
= 0;
379 struct snd_soc_component
*component
;
380 struct snd_soc_dai
*dai
;
385 list_for_each_entry(component
, &component_list
, list
) {
386 list_for_each_entry(dai
, &component
->dai_list
, list
) {
387 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
391 if (ret
> PAGE_SIZE
) {
398 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
405 static const struct file_operations dai_list_fops
= {
406 .read
= dai_list_read_file
,
407 .llseek
= default_llseek
,/* read accesses f_pos */
410 static ssize_t
platform_list_read_file(struct file
*file
,
411 char __user
*user_buf
,
412 size_t count
, loff_t
*ppos
)
414 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
415 ssize_t len
, ret
= 0;
416 struct snd_soc_platform
*platform
;
421 list_for_each_entry(platform
, &platform_list
, list
) {
422 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
423 platform
->component
.name
);
426 if (ret
> PAGE_SIZE
) {
432 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
439 static const struct file_operations platform_list_fops
= {
440 .read
= platform_list_read_file
,
441 .llseek
= default_llseek
,/* read accesses f_pos */
444 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
446 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
447 snd_soc_debugfs_root
);
448 if (!card
->debugfs_card_root
) {
450 "ASoC: Failed to create card debugfs directory\n");
454 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
455 card
->debugfs_card_root
,
457 if (!card
->debugfs_pop_time
)
459 "ASoC: Failed to create pop time debugfs file\n");
462 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
464 debugfs_remove_recursive(card
->debugfs_card_root
);
469 #define soc_init_codec_debugfs NULL
471 static inline void soc_init_component_debugfs(
472 struct snd_soc_component
*component
)
476 static inline void soc_cleanup_component_debugfs(
477 struct snd_soc_component
*component
)
481 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
485 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
490 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
491 const char *dai_link
, int stream
)
495 for (i
= 0; i
< card
->num_links
; i
++) {
496 if (card
->rtd
[i
].dai_link
->no_pcm
&&
497 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
498 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
500 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
503 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
505 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
506 const char *dai_link
)
510 for (i
= 0; i
< card
->num_links
; i
++) {
511 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
512 return &card
->rtd
[i
];
514 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
517 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
519 static void codec2codec_close_delayed_work(struct work_struct
*work
)
521 /* Currently nothing to do for c2c links
522 * Since c2c links are internal nodes in the DAPM graph and
523 * don't interface with the outside world or application layer
524 * we don't have to do any special handling on close.
528 #ifdef CONFIG_PM_SLEEP
529 /* powers down audio subsystem for suspend */
530 int snd_soc_suspend(struct device
*dev
)
532 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
533 struct snd_soc_codec
*codec
;
536 /* If the card is not initialized yet there is nothing to do */
537 if (!card
->instantiated
)
540 /* Due to the resume being scheduled into a workqueue we could
541 * suspend before that's finished - wait for it to complete.
543 snd_power_lock(card
->snd_card
);
544 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
545 snd_power_unlock(card
->snd_card
);
547 /* we're going to block userspace touching us until resume completes */
548 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
550 /* mute any active DACs */
551 for (i
= 0; i
< card
->num_rtd
; i
++) {
553 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
556 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
557 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
558 struct snd_soc_dai_driver
*drv
= dai
->driver
;
560 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
561 drv
->ops
->digital_mute(dai
, 1);
565 /* suspend all pcms */
566 for (i
= 0; i
< card
->num_rtd
; i
++) {
567 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
570 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
573 if (card
->suspend_pre
)
574 card
->suspend_pre(card
);
576 for (i
= 0; i
< card
->num_rtd
; i
++) {
577 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
579 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
582 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
583 cpu_dai
->driver
->suspend(cpu_dai
);
586 /* close any waiting streams and save state */
587 for (i
= 0; i
< card
->num_rtd
; i
++) {
588 struct snd_soc_dai
**codec_dais
= card
->rtd
[i
].codec_dais
;
589 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
590 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
591 codec_dais
[j
]->codec
->dapm
.suspend_bias_level
=
592 codec_dais
[j
]->codec
->dapm
.bias_level
;
596 for (i
= 0; i
< card
->num_rtd
; i
++) {
598 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
601 snd_soc_dapm_stream_event(&card
->rtd
[i
],
602 SNDRV_PCM_STREAM_PLAYBACK
,
603 SND_SOC_DAPM_STREAM_SUSPEND
);
605 snd_soc_dapm_stream_event(&card
->rtd
[i
],
606 SNDRV_PCM_STREAM_CAPTURE
,
607 SND_SOC_DAPM_STREAM_SUSPEND
);
610 /* Recheck all endpoints too, their state is affected by suspend */
611 dapm_mark_endpoints_dirty(card
);
612 snd_soc_dapm_sync(&card
->dapm
);
614 /* suspend all CODECs */
615 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
616 /* If there are paths active then the CODEC will be held with
617 * bias _ON and should not be suspended. */
618 if (!codec
->suspended
) {
619 switch (codec
->dapm
.bias_level
) {
620 case SND_SOC_BIAS_STANDBY
:
622 * If the CODEC is capable of idle
623 * bias off then being in STANDBY
624 * means it's doing something,
625 * otherwise fall through.
627 if (codec
->dapm
.idle_bias_off
) {
629 "ASoC: idle_bias_off CODEC on over suspend\n");
633 case SND_SOC_BIAS_OFF
:
634 if (codec
->driver
->suspend
)
635 codec
->driver
->suspend(codec
);
636 codec
->suspended
= 1;
637 if (codec
->component
.regmap
)
638 regcache_mark_dirty(codec
->component
.regmap
);
639 /* deactivate pins to sleep state */
640 pinctrl_pm_select_sleep_state(codec
->dev
);
644 "ASoC: CODEC is on over suspend\n");
650 for (i
= 0; i
< card
->num_rtd
; i
++) {
651 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
653 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
656 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
657 cpu_dai
->driver
->suspend(cpu_dai
);
659 /* deactivate pins to sleep state */
660 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
663 if (card
->suspend_post
)
664 card
->suspend_post(card
);
668 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
670 /* deferred resume work, so resume can complete before we finished
671 * setting our codec back up, which can be very slow on I2C
673 static void soc_resume_deferred(struct work_struct
*work
)
675 struct snd_soc_card
*card
=
676 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
677 struct snd_soc_codec
*codec
;
680 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
681 * so userspace apps are blocked from touching us
684 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
686 /* Bring us up into D2 so that DAPM starts enabling things */
687 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
689 if (card
->resume_pre
)
690 card
->resume_pre(card
);
692 /* resume control bus DAIs */
693 for (i
= 0; i
< card
->num_rtd
; i
++) {
694 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
696 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
699 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
700 cpu_dai
->driver
->resume(cpu_dai
);
703 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
704 /* If the CODEC was idle over suspend then it will have been
705 * left with bias OFF or STANDBY and suspended so we must now
706 * resume. Otherwise the suspend was suppressed.
708 if (codec
->suspended
) {
709 switch (codec
->dapm
.bias_level
) {
710 case SND_SOC_BIAS_STANDBY
:
711 case SND_SOC_BIAS_OFF
:
712 if (codec
->driver
->resume
)
713 codec
->driver
->resume(codec
);
714 codec
->suspended
= 0;
718 "ASoC: CODEC was on over suspend\n");
724 for (i
= 0; i
< card
->num_rtd
; i
++) {
726 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
729 snd_soc_dapm_stream_event(&card
->rtd
[i
],
730 SNDRV_PCM_STREAM_PLAYBACK
,
731 SND_SOC_DAPM_STREAM_RESUME
);
733 snd_soc_dapm_stream_event(&card
->rtd
[i
],
734 SNDRV_PCM_STREAM_CAPTURE
,
735 SND_SOC_DAPM_STREAM_RESUME
);
738 /* unmute any active DACs */
739 for (i
= 0; i
< card
->num_rtd
; i
++) {
741 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
744 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
745 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
746 struct snd_soc_dai_driver
*drv
= dai
->driver
;
748 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
749 drv
->ops
->digital_mute(dai
, 0);
753 for (i
= 0; i
< card
->num_rtd
; i
++) {
754 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
756 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
759 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
760 cpu_dai
->driver
->resume(cpu_dai
);
763 if (card
->resume_post
)
764 card
->resume_post(card
);
766 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
768 /* userspace can access us now we are back as we were before */
769 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
771 /* Recheck all endpoints too, their state is affected by suspend */
772 dapm_mark_endpoints_dirty(card
);
773 snd_soc_dapm_sync(&card
->dapm
);
776 /* powers up audio subsystem after a suspend */
777 int snd_soc_resume(struct device
*dev
)
779 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
780 bool bus_control
= false;
783 /* If the card is not initialized yet there is nothing to do */
784 if (!card
->instantiated
)
787 /* activate pins from sleep state */
788 for (i
= 0; i
< card
->num_rtd
; i
++) {
789 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
790 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
791 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
795 pinctrl_pm_select_default_state(cpu_dai
->dev
);
797 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
798 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
799 if (codec_dai
->active
)
800 pinctrl_pm_select_default_state(codec_dai
->dev
);
805 * DAIs that also act as the control bus master might have other drivers
806 * hanging off them so need to resume immediately. Other drivers don't
807 * have that problem and may take a substantial amount of time to resume
808 * due to I/O costs and anti-pop so handle them out of line.
810 for (i
= 0; i
< card
->num_rtd
; i
++) {
811 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
812 bus_control
|= cpu_dai
->driver
->bus_control
;
815 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
816 soc_resume_deferred(&card
->deferred_resume_work
);
818 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
819 if (!schedule_work(&card
->deferred_resume_work
))
820 dev_err(dev
, "ASoC: resume work item may be lost\n");
825 EXPORT_SYMBOL_GPL(snd_soc_resume
);
827 #define snd_soc_suspend NULL
828 #define snd_soc_resume NULL
831 static const struct snd_soc_dai_ops null_dai_ops
= {
834 static struct snd_soc_component
*soc_find_component(
835 const struct device_node
*of_node
, const char *name
)
837 struct snd_soc_component
*component
;
839 list_for_each_entry(component
, &component_list
, list
) {
841 if (component
->dev
->of_node
== of_node
)
843 } else if (strcmp(component
->name
, name
) == 0) {
851 static struct snd_soc_dai
*snd_soc_find_dai(
852 const struct snd_soc_dai_link_component
*dlc
)
854 struct snd_soc_component
*component
;
855 struct snd_soc_dai
*dai
;
857 /* Find CPU DAI from registered DAIs*/
858 list_for_each_entry(component
, &component_list
, list
) {
859 if (dlc
->of_node
&& component
->dev
->of_node
!= dlc
->of_node
)
861 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
863 list_for_each_entry(dai
, &component
->dai_list
, list
) {
864 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
))
874 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
876 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
877 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
878 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
879 struct snd_soc_dai_link_component cpu_dai_component
;
880 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
881 struct snd_soc_platform
*platform
;
882 const char *platform_name
;
885 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
887 cpu_dai_component
.name
= dai_link
->cpu_name
;
888 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
889 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
890 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
892 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
893 dai_link
->cpu_dai_name
);
894 return -EPROBE_DEFER
;
897 rtd
->num_codecs
= dai_link
->num_codecs
;
899 /* Find CODEC from registered CODECs */
900 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
901 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
902 if (!codec_dais
[i
]) {
903 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
905 return -EPROBE_DEFER
;
909 /* Single codec links expect codec and codec_dai in runtime data */
910 rtd
->codec_dai
= codec_dais
[0];
911 rtd
->codec
= rtd
->codec_dai
->codec
;
913 /* if there's no platform we match on the empty platform */
914 platform_name
= dai_link
->platform_name
;
915 if (!platform_name
&& !dai_link
->platform_of_node
)
916 platform_name
= "snd-soc-dummy";
918 /* find one from the set of registered platforms */
919 list_for_each_entry(platform
, &platform_list
, list
) {
920 if (dai_link
->platform_of_node
) {
921 if (platform
->dev
->of_node
!=
922 dai_link
->platform_of_node
)
925 if (strcmp(platform
->component
.name
, platform_name
))
929 rtd
->platform
= platform
;
931 if (!rtd
->platform
) {
932 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
933 dai_link
->platform_name
);
934 return -EPROBE_DEFER
;
942 static void soc_remove_component(struct snd_soc_component
*component
)
944 if (!component
->probed
)
947 /* This is a HACK and will be removed soon */
948 if (component
->codec
)
949 list_del(&component
->codec
->card_list
);
951 if (component
->remove
)
952 component
->remove(component
);
954 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
956 soc_cleanup_component_debugfs(component
);
957 component
->probed
= 0;
958 module_put(component
->dev
->driver
->owner
);
961 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
965 if (dai
&& dai
->probed
&&
966 dai
->driver
->remove_order
== order
) {
967 if (dai
->driver
->remove
) {
968 err
= dai
->driver
->remove(dai
);
971 "ASoC: failed to remove %s: %d\n",
978 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
980 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
983 /* unregister the rtd device */
984 if (rtd
->dev_registered
) {
985 device_unregister(rtd
->dev
);
986 rtd
->dev_registered
= 0;
989 /* remove the CODEC DAI */
990 for (i
= 0; i
< rtd
->num_codecs
; i
++)
991 soc_remove_dai(rtd
->codec_dais
[i
], order
);
993 soc_remove_dai(rtd
->cpu_dai
, order
);
996 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
999 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1000 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1001 struct snd_soc_platform
*platform
= rtd
->platform
;
1002 struct snd_soc_component
*component
;
1005 /* remove the platform */
1006 if (platform
&& platform
->component
.driver
->remove_order
== order
)
1007 soc_remove_component(&platform
->component
);
1009 /* remove the CODEC-side CODEC */
1010 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1011 component
= rtd
->codec_dais
[i
]->component
;
1012 if (component
->driver
->remove_order
== order
)
1013 soc_remove_component(component
);
1016 /* remove any CPU-side CODEC */
1018 if (cpu_dai
->component
->driver
->remove_order
== order
)
1019 soc_remove_component(cpu_dai
->component
);
1023 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1027 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1029 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1030 soc_remove_link_dais(card
, dai
, order
);
1033 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1035 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1036 soc_remove_link_components(card
, dai
, order
);
1042 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1043 struct snd_soc_component
*component
)
1047 if (card
->codec_conf
== NULL
)
1050 for (i
= 0; i
< card
->num_configs
; i
++) {
1051 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1052 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1054 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1056 component
->name_prefix
= map
->name_prefix
;
1061 static int soc_probe_component(struct snd_soc_card
*card
,
1062 struct snd_soc_component
*component
)
1064 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1065 struct snd_soc_dai
*dai
;
1068 if (component
->probed
)
1071 component
->card
= card
;
1073 soc_set_name_prefix(card
, component
);
1075 if (!try_module_get(component
->dev
->driver
->owner
))
1078 soc_init_component_debugfs(component
);
1080 if (component
->dapm_widgets
) {
1081 ret
= snd_soc_dapm_new_controls(dapm
, component
->dapm_widgets
,
1082 component
->num_dapm_widgets
);
1085 dev_err(component
->dev
,
1086 "Failed to create new controls %d\n", ret
);
1091 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1092 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1094 dev_err(component
->dev
,
1095 "Failed to create DAI widgets %d\n", ret
);
1100 if (component
->probe
) {
1101 ret
= component
->probe(component
);
1103 dev_err(component
->dev
,
1104 "ASoC: failed to probe component %d\n", ret
);
1108 WARN(dapm
->idle_bias_off
&&
1109 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1110 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1114 if (component
->controls
)
1115 snd_soc_add_component_controls(component
, component
->controls
,
1116 component
->num_controls
);
1117 if (component
->dapm_routes
)
1118 snd_soc_dapm_add_routes(dapm
, component
->dapm_routes
,
1119 component
->num_dapm_routes
);
1121 component
->probed
= 1;
1122 list_add(&dapm
->list
, &card
->dapm_list
);
1124 /* This is a HACK and will be removed soon */
1125 if (component
->codec
)
1126 list_add(&component
->codec
->card_list
, &card
->codec_dev_list
);
1131 soc_cleanup_component_debugfs(component
);
1132 module_put(component
->dev
->driver
->owner
);
1137 static void rtd_release(struct device
*dev
)
1142 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1147 /* register the rtd device */
1148 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1151 device_initialize(rtd
->dev
);
1152 rtd
->dev
->parent
= rtd
->card
->dev
;
1153 rtd
->dev
->release
= rtd_release
;
1154 rtd
->dev
->groups
= soc_dev_attr_groups
;
1155 dev_set_name(rtd
->dev
, "%s", name
);
1156 dev_set_drvdata(rtd
->dev
, rtd
);
1157 mutex_init(&rtd
->pcm_mutex
);
1158 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1159 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1160 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1161 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1162 ret
= device_add(rtd
->dev
);
1164 /* calling put_device() here to free the rtd->dev */
1165 put_device(rtd
->dev
);
1166 dev_err(rtd
->card
->dev
,
1167 "ASoC: failed to register runtime device: %d\n", ret
);
1170 rtd
->dev_registered
= 1;
1174 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1177 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1178 struct snd_soc_platform
*platform
= rtd
->platform
;
1179 struct snd_soc_component
*component
;
1182 /* probe the CPU-side component, if it is a CODEC */
1183 component
= rtd
->cpu_dai
->component
;
1184 if (component
->driver
->probe_order
== order
) {
1185 ret
= soc_probe_component(card
, component
);
1190 /* probe the CODEC-side components */
1191 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1192 component
= rtd
->codec_dais
[i
]->component
;
1193 if (component
->driver
->probe_order
== order
) {
1194 ret
= soc_probe_component(card
, component
);
1200 /* probe the platform */
1201 if (platform
->component
.driver
->probe_order
== order
) {
1202 ret
= soc_probe_component(card
, &platform
->component
);
1210 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1214 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1215 if (dai
->driver
->probe
) {
1216 ret
= dai
->driver
->probe(dai
);
1219 "ASoC: failed to probe DAI %s: %d\n",
1231 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1232 struct snd_soc_dai_link
*dai_link
,
1233 struct snd_soc_pcm_runtime
*rtd
)
1235 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1236 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1237 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1240 if (rtd
->num_codecs
> 1)
1241 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1243 /* link the DAI widgets */
1244 play_w
= codec_dai
->playback_widget
;
1245 capture_w
= cpu_dai
->capture_widget
;
1246 if (play_w
&& capture_w
) {
1247 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1250 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1251 play_w
->name
, capture_w
->name
, ret
);
1256 play_w
= cpu_dai
->playback_widget
;
1257 capture_w
= codec_dai
->capture_widget
;
1258 if (play_w
&& capture_w
) {
1259 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1262 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1263 play_w
->name
, capture_w
->name
, ret
);
1271 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1273 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1274 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1275 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1278 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1279 card
->name
, num
, order
);
1281 /* set default power off timeout */
1282 rtd
->pmdown_time
= pmdown_time
;
1284 ret
= soc_probe_dai(cpu_dai
, order
);
1288 /* probe the CODEC DAI */
1289 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1290 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1295 /* complete DAI probe during last probe */
1296 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1299 /* do machine specific initialization */
1300 if (dai_link
->init
) {
1301 ret
= dai_link
->init(rtd
);
1303 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1304 dai_link
->name
, ret
);
1309 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1313 #ifdef CONFIG_DEBUG_FS
1314 /* add DPCM sysfs entries */
1315 if (dai_link
->dynamic
) {
1316 ret
= soc_dpcm_debugfs_add(rtd
);
1319 "ASoC: failed to add dpcm sysfs entries: %d\n",
1326 if (cpu_dai
->driver
->compress_dai
) {
1327 /*create compress_device"*/
1328 ret
= soc_new_compress(rtd
, num
);
1330 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1331 dai_link
->stream_name
);
1336 if (!dai_link
->params
) {
1337 /* create the pcm */
1338 ret
= soc_new_pcm(rtd
, num
);
1340 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1341 dai_link
->stream_name
, ret
);
1345 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1346 codec2codec_close_delayed_work
);
1348 /* link the DAI widgets */
1349 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1358 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1360 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1361 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1362 const char *name
= aux_dev
->codec_name
;
1364 rtd
->component
= soc_find_component(aux_dev
->codec_of_node
, name
);
1365 if (!rtd
->component
) {
1366 if (aux_dev
->codec_of_node
)
1367 name
= of_node_full_name(aux_dev
->codec_of_node
);
1369 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1370 return -EPROBE_DEFER
;
1374 * Some places still reference rtd->codec, so we have to keep that
1375 * initialized if the component is a CODEC. Once all those references
1376 * have been removed, this code can be removed as well.
1378 rtd
->codec
= rtd
->component
->codec
;
1383 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1385 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1386 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1389 ret
= soc_probe_component(card
, rtd
->component
);
1393 /* do machine specific initialization */
1394 if (aux_dev
->init
) {
1395 ret
= aux_dev
->init(rtd
->component
);
1397 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1398 aux_dev
->name
, ret
);
1403 return soc_post_component_init(rtd
, aux_dev
->name
);
1406 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1408 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1409 struct snd_soc_component
*component
= rtd
->component
;
1411 /* unregister the rtd device */
1412 if (rtd
->dev_registered
) {
1413 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1414 device_unregister(rtd
->dev
);
1415 rtd
->dev_registered
= 0;
1418 if (component
&& component
->probed
)
1419 soc_remove_component(component
);
1422 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1426 if (codec
->cache_init
)
1429 ret
= snd_soc_cache_init(codec
);
1432 "ASoC: Failed to set cache compression type: %d\n",
1436 codec
->cache_init
= 1;
1441 * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime
1442 * @rtd: The runtime for which the DAI link format should be changed
1443 * @dai_fmt: The new DAI link format
1445 * This function updates the DAI link format for all DAIs connected to the DAI
1446 * link for the specified runtime.
1448 * Note: For setups with a static format set the dai_fmt field in the
1449 * corresponding snd_dai_link struct instead of using this function.
1451 * Returns 0 on success, otherwise a negative error code.
1453 int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime
*rtd
,
1454 unsigned int dai_fmt
)
1456 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1457 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1461 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1462 struct snd_soc_dai
*codec_dai
= codec_dais
[i
];
1464 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1465 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1466 dev_warn(codec_dai
->dev
,
1467 "ASoC: Failed to set DAI format: %d\n", ret
);
1472 /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */
1473 if (cpu_dai
->codec
) {
1474 unsigned int inv_dai_fmt
;
1476 inv_dai_fmt
= dai_fmt
& ~SND_SOC_DAIFMT_MASTER_MASK
;
1477 switch (dai_fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1478 case SND_SOC_DAIFMT_CBM_CFM
:
1479 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1481 case SND_SOC_DAIFMT_CBM_CFS
:
1482 inv_dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1484 case SND_SOC_DAIFMT_CBS_CFM
:
1485 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1487 case SND_SOC_DAIFMT_CBS_CFS
:
1488 inv_dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1492 dai_fmt
= inv_dai_fmt
;
1495 ret
= snd_soc_dai_set_fmt(cpu_dai
, dai_fmt
);
1496 if (ret
!= 0 && ret
!= -ENOTSUPP
) {
1497 dev_warn(cpu_dai
->dev
,
1498 "ASoC: Failed to set DAI format: %d\n", ret
);
1504 EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt
);
1506 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1508 struct snd_soc_codec
*codec
;
1511 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1514 for (i
= 0; i
< card
->num_links
; i
++) {
1515 ret
= soc_bind_dai_link(card
, i
);
1520 /* bind aux_devs too */
1521 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1522 ret
= soc_bind_aux_dev(card
, i
);
1527 /* initialize the register cache for each available codec */
1528 list_for_each_entry(codec
, &codec_list
, list
) {
1529 if (codec
->cache_init
)
1531 ret
= snd_soc_init_codec_cache(codec
);
1536 /* card bind complete so register a sound card */
1537 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1538 card
->owner
, 0, &card
->snd_card
);
1541 "ASoC: can't create sound card for card %s: %d\n",
1546 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1547 card
->dapm
.dev
= card
->dev
;
1548 card
->dapm
.card
= card
;
1549 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1551 #ifdef CONFIG_DEBUG_FS
1552 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1555 #ifdef CONFIG_PM_SLEEP
1556 /* deferred resume work */
1557 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1560 if (card
->dapm_widgets
)
1561 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1562 card
->num_dapm_widgets
);
1564 /* initialise the sound card only once */
1566 ret
= card
->probe(card
);
1568 goto card_probe_error
;
1571 /* probe all components used by DAI links on this card */
1572 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1574 for (i
= 0; i
< card
->num_links
; i
++) {
1575 ret
= soc_probe_link_components(card
, i
, order
);
1578 "ASoC: failed to instantiate card %d\n",
1585 /* probe all DAI links on this card */
1586 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1588 for (i
= 0; i
< card
->num_links
; i
++) {
1589 ret
= soc_probe_link_dais(card
, i
, order
);
1592 "ASoC: failed to instantiate card %d\n",
1599 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1600 ret
= soc_probe_aux_dev(card
, i
);
1603 "ASoC: failed to add auxiliary devices %d\n",
1605 goto probe_aux_dev_err
;
1609 snd_soc_dapm_link_dai_widgets(card
);
1610 snd_soc_dapm_connect_dai_link_widgets(card
);
1613 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1615 if (card
->dapm_routes
)
1616 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1617 card
->num_dapm_routes
);
1619 for (i
= 0; i
< card
->num_links
; i
++) {
1620 if (card
->dai_link
[i
].dai_fmt
)
1621 snd_soc_runtime_set_dai_fmt(&card
->rtd
[i
],
1622 card
->dai_link
[i
].dai_fmt
);
1625 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1627 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1628 "%s", card
->long_name
? card
->long_name
: card
->name
);
1629 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1630 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1631 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1632 switch (card
->snd_card
->driver
[i
]) {
1638 if (!isalnum(card
->snd_card
->driver
[i
]))
1639 card
->snd_card
->driver
[i
] = '_';
1644 if (card
->late_probe
) {
1645 ret
= card
->late_probe(card
);
1647 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1649 goto probe_aux_dev_err
;
1653 snd_soc_dapm_new_widgets(card
);
1655 ret
= snd_card_register(card
->snd_card
);
1657 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1659 goto probe_aux_dev_err
;
1662 card
->instantiated
= 1;
1663 snd_soc_dapm_sync(&card
->dapm
);
1664 mutex_unlock(&card
->mutex
);
1669 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1670 soc_remove_aux_dev(card
, i
);
1673 soc_remove_dai_links(card
);
1679 snd_card_free(card
->snd_card
);
1682 mutex_unlock(&card
->mutex
);
1687 /* probes a new socdev */
1688 static int soc_probe(struct platform_device
*pdev
)
1690 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1693 * no card, so machine driver should be registering card
1694 * we should not be here in that case so ret error
1699 dev_warn(&pdev
->dev
,
1700 "ASoC: machine %s should use snd_soc_register_card()\n",
1703 /* Bodge while we unpick instantiation */
1704 card
->dev
= &pdev
->dev
;
1706 return snd_soc_register_card(card
);
1709 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1713 /* make sure any delayed work runs */
1714 for (i
= 0; i
< card
->num_rtd
; i
++) {
1715 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1716 flush_delayed_work(&rtd
->delayed_work
);
1719 /* remove auxiliary devices */
1720 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1721 soc_remove_aux_dev(card
, i
);
1723 /* remove and free each DAI */
1724 soc_remove_dai_links(card
);
1726 soc_cleanup_card_debugfs(card
);
1728 /* remove the card */
1732 snd_soc_dapm_free(&card
->dapm
);
1734 snd_card_free(card
->snd_card
);
1739 /* removes a socdev */
1740 static int soc_remove(struct platform_device
*pdev
)
1742 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1744 snd_soc_unregister_card(card
);
1748 int snd_soc_poweroff(struct device
*dev
)
1750 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1753 if (!card
->instantiated
)
1756 /* Flush out pmdown_time work - we actually do want to run it
1757 * now, we're shutting down so no imminent restart. */
1758 for (i
= 0; i
< card
->num_rtd
; i
++) {
1759 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1760 flush_delayed_work(&rtd
->delayed_work
);
1763 snd_soc_dapm_shutdown(card
);
1765 /* deactivate pins to sleep state */
1766 for (i
= 0; i
< card
->num_rtd
; i
++) {
1767 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1768 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1771 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
1772 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
1773 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
1774 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
1780 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1782 const struct dev_pm_ops snd_soc_pm_ops
= {
1783 .suspend
= snd_soc_suspend
,
1784 .resume
= snd_soc_resume
,
1785 .freeze
= snd_soc_suspend
,
1786 .thaw
= snd_soc_resume
,
1787 .poweroff
= snd_soc_poweroff
,
1788 .restore
= snd_soc_resume
,
1790 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1792 /* ASoC platform driver */
1793 static struct platform_driver soc_driver
= {
1795 .name
= "soc-audio",
1796 .pm
= &snd_soc_pm_ops
,
1799 .remove
= soc_remove
,
1803 * snd_soc_cnew - create new control
1804 * @_template: control template
1805 * @data: control private data
1806 * @long_name: control long name
1807 * @prefix: control name prefix
1809 * Create a new mixer control from a template control.
1811 * Returns 0 for success, else error.
1813 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1814 void *data
, const char *long_name
,
1817 struct snd_kcontrol_new
template;
1818 struct snd_kcontrol
*kcontrol
;
1821 memcpy(&template, _template
, sizeof(template));
1825 long_name
= template.name
;
1828 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
1832 template.name
= name
;
1834 template.name
= long_name
;
1837 kcontrol
= snd_ctl_new1(&template, data
);
1843 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1845 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
1846 const struct snd_kcontrol_new
*controls
, int num_controls
,
1847 const char *prefix
, void *data
)
1851 for (i
= 0; i
< num_controls
; i
++) {
1852 const struct snd_kcontrol_new
*control
= &controls
[i
];
1853 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
1854 control
->name
, prefix
));
1856 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
1857 control
->name
, err
);
1865 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
1868 struct snd_card
*card
= soc_card
->snd_card
;
1869 struct snd_kcontrol
*kctl
;
1871 if (unlikely(!name
))
1874 list_for_each_entry(kctl
, &card
->controls
, list
)
1875 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
1879 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
1882 * snd_soc_add_component_controls - Add an array of controls to a component.
1884 * @component: Component to add controls to
1885 * @controls: Array of controls to add
1886 * @num_controls: Number of elements in the array
1888 * Return: 0 for success, else error.
1890 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
1891 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1893 struct snd_card
*card
= component
->card
->snd_card
;
1895 return snd_soc_add_controls(card
, component
->dev
, controls
,
1896 num_controls
, component
->name_prefix
, component
);
1898 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
1901 * snd_soc_add_codec_controls - add an array of controls to a codec.
1902 * Convenience function to add a list of controls. Many codecs were
1903 * duplicating this code.
1905 * @codec: codec to add controls to
1906 * @controls: array of controls to add
1907 * @num_controls: number of elements in the array
1909 * Return 0 for success, else error.
1911 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
1912 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1914 return snd_soc_add_component_controls(&codec
->component
, controls
,
1917 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
1920 * snd_soc_add_platform_controls - add an array of controls to a platform.
1921 * Convenience function to add a list of controls.
1923 * @platform: platform to add controls to
1924 * @controls: array of controls to add
1925 * @num_controls: number of elements in the array
1927 * Return 0 for success, else error.
1929 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
1930 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1932 return snd_soc_add_component_controls(&platform
->component
, controls
,
1935 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
1938 * snd_soc_add_card_controls - add an array of controls to a SoC card.
1939 * Convenience function to add a list of controls.
1941 * @soc_card: SoC card to add controls to
1942 * @controls: array of controls to add
1943 * @num_controls: number of elements in the array
1945 * Return 0 for success, else error.
1947 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
1948 const struct snd_kcontrol_new
*controls
, int num_controls
)
1950 struct snd_card
*card
= soc_card
->snd_card
;
1952 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
1955 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
1958 * snd_soc_add_dai_controls - add an array of controls to a DAI.
1959 * Convienience function to add a list of controls.
1961 * @dai: DAI to add controls to
1962 * @controls: array of controls to add
1963 * @num_controls: number of elements in the array
1965 * Return 0 for success, else error.
1967 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
1968 const struct snd_kcontrol_new
*controls
, int num_controls
)
1970 struct snd_card
*card
= dai
->component
->card
->snd_card
;
1972 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
1975 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
1978 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
1980 * @clk_id: DAI specific clock ID
1981 * @freq: new clock frequency in Hz
1982 * @dir: new clock direction - input/output.
1984 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
1986 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
1987 unsigned int freq
, int dir
)
1989 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
1990 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
1991 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
1992 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
1997 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2000 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2002 * @clk_id: DAI specific clock ID
2003 * @source: Source for the clock
2004 * @freq: new clock frequency in Hz
2005 * @dir: new clock direction - input/output.
2007 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2009 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2010 int source
, unsigned int freq
, int dir
)
2012 if (codec
->driver
->set_sysclk
)
2013 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2018 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2021 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2023 * @div_id: DAI specific clock divider ID
2024 * @div: new clock divisor.
2026 * Configures the clock dividers. This is used to derive the best DAI bit and
2027 * frame clocks from the system or master clock. It's best to set the DAI bit
2028 * and frame clocks as low as possible to save system power.
2030 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2031 int div_id
, int div
)
2033 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2034 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2038 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2041 * snd_soc_dai_set_pll - configure DAI PLL.
2043 * @pll_id: DAI specific PLL ID
2044 * @source: DAI specific source for the PLL
2045 * @freq_in: PLL input clock frequency in Hz
2046 * @freq_out: requested PLL output clock frequency in Hz
2048 * Configures and enables PLL to generate output clock based on input clock.
2050 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2051 unsigned int freq_in
, unsigned int freq_out
)
2053 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2054 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2056 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2057 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2062 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2065 * snd_soc_codec_set_pll - configure codec PLL.
2067 * @pll_id: DAI specific PLL ID
2068 * @source: DAI specific source for the PLL
2069 * @freq_in: PLL input clock frequency in Hz
2070 * @freq_out: requested PLL output clock frequency in Hz
2072 * Configures and enables PLL to generate output clock based on input clock.
2074 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2075 unsigned int freq_in
, unsigned int freq_out
)
2077 if (codec
->driver
->set_pll
)
2078 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2083 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2086 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2088 * @ratio Ratio of BCLK to Sample rate.
2090 * Configures the DAI for a preset BCLK to sample rate ratio.
2092 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2094 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2095 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2099 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2102 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2104 * @fmt: SND_SOC_DAIFMT_ format value.
2106 * Configures the DAI hardware format and clocking.
2108 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2110 if (dai
->driver
== NULL
)
2112 if (dai
->driver
->ops
->set_fmt
== NULL
)
2114 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2116 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2119 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2120 * @slots: Number of slots in use.
2121 * @tx_mask: bitmask representing active TX slots.
2122 * @rx_mask: bitmask representing active RX slots.
2124 * Generates the TDM tx and rx slot default masks for DAI.
2126 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2127 unsigned int *tx_mask
,
2128 unsigned int *rx_mask
)
2130 if (*tx_mask
|| *rx_mask
)
2136 *tx_mask
= (1 << slots
) - 1;
2137 *rx_mask
= (1 << slots
) - 1;
2143 * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation
2144 * @dai: The DAI to configure
2145 * @tx_mask: bitmask representing active TX slots.
2146 * @rx_mask: bitmask representing active RX slots.
2147 * @slots: Number of slots in use.
2148 * @slot_width: Width in bits for each slot.
2150 * This function configures the specified DAI for TDM operation. @slot contains
2151 * the total number of slots of the TDM stream and @slot_with the width of each
2152 * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the
2153 * active slots of the TDM stream for the specified DAI, i.e. which slots the
2154 * DAI should write to or read from. If a bit is set the corresponding slot is
2155 * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to
2156 * the first slot, bit 1 to the second slot and so on. The first active slot
2157 * maps to the first channel of the DAI, the second active slot to the second
2158 * channel and so on.
2160 * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask,
2161 * @rx_mask and @slot_width will be ignored.
2163 * Returns 0 on success, a negative error code otherwise.
2165 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2166 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2168 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2169 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2170 &tx_mask
, &rx_mask
);
2172 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2174 dai
->tx_mask
= tx_mask
;
2175 dai
->rx_mask
= rx_mask
;
2177 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2178 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2183 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2186 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2188 * @tx_num: how many TX channels
2189 * @tx_slot: pointer to an array which imply the TX slot number channel
2191 * @rx_num: how many RX channels
2192 * @rx_slot: pointer to an array which imply the RX slot number channel
2195 * configure the relationship between channel number and TDM slot number.
2197 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2198 unsigned int tx_num
, unsigned int *tx_slot
,
2199 unsigned int rx_num
, unsigned int *rx_slot
)
2201 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2202 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2207 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2210 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2212 * @tristate: tristate enable
2214 * Tristates the DAI so that others can use it.
2216 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2218 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2219 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2223 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2226 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2228 * @mute: mute enable
2229 * @direction: stream to mute
2231 * Mutes the DAI DAC.
2233 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2239 if (dai
->driver
->ops
->mute_stream
)
2240 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2241 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2242 dai
->driver
->ops
->digital_mute
)
2243 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2247 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2249 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
2250 struct snd_soc_dai_link
*dai_link
)
2252 /* Legacy codec/codec_dai link is a single entry in multicodec */
2253 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
2254 dai_link
->codec_dai_name
) {
2255 dai_link
->num_codecs
= 1;
2257 dai_link
->codecs
= devm_kzalloc(card
->dev
,
2258 sizeof(struct snd_soc_dai_link_component
),
2260 if (!dai_link
->codecs
)
2263 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
2264 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
2265 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
2268 if (!dai_link
->codecs
) {
2269 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
2277 * snd_soc_register_card - Register a card with the ASoC core
2279 * @card: Card to register
2282 int snd_soc_register_card(struct snd_soc_card
*card
)
2286 if (!card
->name
|| !card
->dev
)
2289 for (i
= 0; i
< card
->num_links
; i
++) {
2290 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2292 ret
= snd_soc_init_multicodec(card
, link
);
2294 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
2298 for (j
= 0; j
< link
->num_codecs
; j
++) {
2300 * Codec must be specified by 1 of name or OF node,
2301 * not both or neither.
2303 if (!!link
->codecs
[j
].name
==
2304 !!link
->codecs
[j
].of_node
) {
2305 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
2309 /* Codec DAI name must be specified */
2310 if (!link
->codecs
[j
].dai_name
) {
2311 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
2318 * Platform may be specified by either name or OF node, but
2319 * can be left unspecified, and a dummy platform will be used.
2321 if (link
->platform_name
&& link
->platform_of_node
) {
2323 "ASoC: Both platform name/of_node are set for %s\n",
2329 * CPU device may be specified by either name or OF node, but
2330 * can be left unspecified, and will be matched based on DAI
2333 if (link
->cpu_name
&& link
->cpu_of_node
) {
2335 "ASoC: Neither/both cpu name/of_node are set for %s\n",
2340 * At least one of CPU DAI name or CPU device name/node must be
2343 if (!link
->cpu_dai_name
&&
2344 !(link
->cpu_name
|| link
->cpu_of_node
)) {
2346 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
2352 dev_set_drvdata(card
->dev
, card
);
2354 snd_soc_initialize_card_lists(card
);
2356 soc_init_card_debugfs(card
);
2358 card
->rtd
= devm_kzalloc(card
->dev
,
2359 sizeof(struct snd_soc_pcm_runtime
) *
2360 (card
->num_links
+ card
->num_aux_devs
),
2362 if (card
->rtd
== NULL
)
2365 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2367 for (i
= 0; i
< card
->num_links
; i
++) {
2368 card
->rtd
[i
].card
= card
;
2369 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2370 card
->rtd
[i
].codec_dais
= devm_kzalloc(card
->dev
,
2371 sizeof(struct snd_soc_dai
*) *
2372 (card
->rtd
[i
].dai_link
->num_codecs
),
2374 if (card
->rtd
[i
].codec_dais
== NULL
)
2378 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2379 card
->rtd_aux
[i
].card
= card
;
2381 INIT_LIST_HEAD(&card
->dapm_dirty
);
2382 card
->instantiated
= 0;
2383 mutex_init(&card
->mutex
);
2384 mutex_init(&card
->dapm_mutex
);
2386 ret
= snd_soc_instantiate_card(card
);
2388 soc_cleanup_card_debugfs(card
);
2390 /* deactivate pins to sleep state */
2391 for (i
= 0; i
< card
->num_rtd
; i
++) {
2392 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2393 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2396 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2397 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2398 if (!codec_dai
->active
)
2399 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2402 if (!cpu_dai
->active
)
2403 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2408 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2411 * snd_soc_unregister_card - Unregister a card with the ASoC core
2413 * @card: Card to unregister
2416 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2418 if (card
->instantiated
) {
2419 card
->instantiated
= false;
2420 snd_soc_dapm_shutdown(card
);
2421 soc_cleanup_card_resources(card
);
2422 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2427 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2430 * Simplify DAI link configuration by removing ".-1" from device names
2431 * and sanitizing names.
2433 static char *fmt_single_name(struct device
*dev
, int *id
)
2435 char *found
, name
[NAME_SIZE
];
2438 if (dev_name(dev
) == NULL
)
2441 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2443 /* are we a "%s.%d" name (platform and SPI components) */
2444 found
= strstr(name
, dev
->driver
->name
);
2447 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2449 /* discard ID from name if ID == -1 */
2451 found
[strlen(dev
->driver
->name
)] = '\0';
2455 /* I2C component devices are named "bus-addr" */
2456 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2457 char tmp
[NAME_SIZE
];
2459 /* create unique ID number from I2C addr and bus */
2460 *id
= ((id1
& 0xffff) << 16) + id2
;
2462 /* sanitize component name for DAI link creation */
2463 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2464 strlcpy(name
, tmp
, NAME_SIZE
);
2469 return kstrdup(name
, GFP_KERNEL
);
2473 * Simplify DAI link naming for single devices with multiple DAIs by removing
2474 * any ".-1" and using the DAI name (instead of device name).
2476 static inline char *fmt_multiple_name(struct device
*dev
,
2477 struct snd_soc_dai_driver
*dai_drv
)
2479 if (dai_drv
->name
== NULL
) {
2481 "ASoC: error - multiple DAI %s registered with no name\n",
2486 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2490 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2492 * @component: The component for which the DAIs should be unregistered
2494 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
2496 struct snd_soc_dai
*dai
, *_dai
;
2498 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
2499 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
2501 list_del(&dai
->list
);
2508 * snd_soc_register_dais - Register a DAI with the ASoC core
2510 * @component: The component the DAIs are registered for
2511 * @dai_drv: DAI driver to use for the DAIs
2512 * @count: Number of DAIs
2513 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2516 static int snd_soc_register_dais(struct snd_soc_component
*component
,
2517 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
2518 bool legacy_dai_naming
)
2520 struct device
*dev
= component
->dev
;
2521 struct snd_soc_dai
*dai
;
2525 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
2527 component
->dai_drv
= dai_drv
;
2528 component
->num_dai
= count
;
2530 for (i
= 0; i
< count
; i
++) {
2532 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2539 * Back in the old days when we still had component-less DAIs,
2540 * instead of having a static name, component-less DAIs would
2541 * inherit the name of the parent device so it is possible to
2542 * register multiple instances of the DAI. We still need to keep
2543 * the same naming style even though those DAIs are not
2544 * component-less anymore.
2546 if (count
== 1 && legacy_dai_naming
) {
2547 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2549 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
2551 dai
->id
= dai_drv
[i
].id
;
2555 if (dai
->name
== NULL
) {
2561 dai
->component
= component
;
2563 dai
->driver
= &dai_drv
[i
];
2564 if (!dai
->driver
->ops
)
2565 dai
->driver
->ops
= &null_dai_ops
;
2567 list_add(&dai
->list
, &component
->dai_list
);
2569 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
2575 snd_soc_unregister_dais(component
);
2580 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
2581 enum snd_soc_dapm_type type
, int subseq
)
2583 struct snd_soc_component
*component
= dapm
->component
;
2585 component
->driver
->seq_notifier(component
, type
, subseq
);
2588 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
2591 struct snd_soc_component
*component
= dapm
->component
;
2593 return component
->driver
->stream_event(component
, event
);
2596 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
2597 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
2599 struct snd_soc_dapm_context
*dapm
;
2601 component
->name
= fmt_single_name(dev
, &component
->id
);
2602 if (!component
->name
) {
2603 dev_err(dev
, "ASoC: Failed to allocate name\n");
2607 component
->dev
= dev
;
2608 component
->driver
= driver
;
2609 component
->probe
= component
->driver
->probe
;
2610 component
->remove
= component
->driver
->remove
;
2612 if (!component
->dapm_ptr
)
2613 component
->dapm_ptr
= &component
->dapm
;
2615 dapm
= component
->dapm_ptr
;
2617 dapm
->component
= component
;
2618 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
2619 dapm
->idle_bias_off
= true;
2620 if (driver
->seq_notifier
)
2621 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
2622 if (driver
->stream_event
)
2623 dapm
->stream_event
= snd_soc_component_stream_event
;
2625 component
->controls
= driver
->controls
;
2626 component
->num_controls
= driver
->num_controls
;
2627 component
->dapm_widgets
= driver
->dapm_widgets
;
2628 component
->num_dapm_widgets
= driver
->num_dapm_widgets
;
2629 component
->dapm_routes
= driver
->dapm_routes
;
2630 component
->num_dapm_routes
= driver
->num_dapm_routes
;
2632 INIT_LIST_HEAD(&component
->dai_list
);
2633 mutex_init(&component
->io_mutex
);
2638 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
2640 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
2642 /* Errors are legitimate for non-integer byte multiples */
2644 component
->val_bytes
= val_bytes
;
2647 #ifdef CONFIG_REGMAP
2650 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2651 * @component: The component for which to initialize the regmap instance
2652 * @regmap: The regmap instance that should be used by the component
2654 * This function allows deferred assignment of the regmap instance that is
2655 * associated with the component. Only use this if the regmap instance is not
2656 * yet ready when the component is registered. The function must also be called
2657 * before the first IO attempt of the component.
2659 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
2660 struct regmap
*regmap
)
2662 component
->regmap
= regmap
;
2663 snd_soc_component_setup_regmap(component
);
2665 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
2668 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2669 * @component: The component for which to de-initialize the regmap instance
2671 * Calls regmap_exit() on the regmap instance associated to the component and
2672 * removes the regmap instance from the component.
2674 * This function should only be used if snd_soc_component_init_regmap() was used
2675 * to initialize the regmap instance.
2677 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
2679 regmap_exit(component
->regmap
);
2680 component
->regmap
= NULL
;
2682 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
2686 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
2688 if (!component
->write
&& !component
->read
) {
2689 if (!component
->regmap
)
2690 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
2691 if (component
->regmap
)
2692 snd_soc_component_setup_regmap(component
);
2695 list_add(&component
->list
, &component_list
);
2698 static void snd_soc_component_add(struct snd_soc_component
*component
)
2700 mutex_lock(&client_mutex
);
2701 snd_soc_component_add_unlocked(component
);
2702 mutex_unlock(&client_mutex
);
2705 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
2707 snd_soc_unregister_dais(component
);
2708 kfree(component
->name
);
2711 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
2713 list_del(&component
->list
);
2716 static void snd_soc_component_del(struct snd_soc_component
*component
)
2718 mutex_lock(&client_mutex
);
2719 snd_soc_component_del_unlocked(component
);
2720 mutex_unlock(&client_mutex
);
2723 int snd_soc_register_component(struct device
*dev
,
2724 const struct snd_soc_component_driver
*cmpnt_drv
,
2725 struct snd_soc_dai_driver
*dai_drv
,
2728 struct snd_soc_component
*cmpnt
;
2731 cmpnt
= kzalloc(sizeof(*cmpnt
), GFP_KERNEL
);
2733 dev_err(dev
, "ASoC: Failed to allocate memory\n");
2737 ret
= snd_soc_component_initialize(cmpnt
, cmpnt_drv
, dev
);
2741 cmpnt
->ignore_pmdown_time
= true;
2742 cmpnt
->registered_as_component
= true;
2744 ret
= snd_soc_register_dais(cmpnt
, dai_drv
, num_dai
, true);
2746 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
2750 snd_soc_component_add(cmpnt
);
2755 snd_soc_component_cleanup(cmpnt
);
2760 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
2763 * snd_soc_unregister_component - Unregister a component from the ASoC core
2766 void snd_soc_unregister_component(struct device
*dev
)
2768 struct snd_soc_component
*cmpnt
;
2770 list_for_each_entry(cmpnt
, &component_list
, list
) {
2771 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
2777 snd_soc_component_del(cmpnt
);
2778 snd_soc_component_cleanup(cmpnt
);
2781 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
2783 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
2785 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2787 return platform
->driver
->probe(platform
);
2790 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
2792 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2794 platform
->driver
->remove(platform
);
2798 * snd_soc_add_platform - Add a platform to the ASoC core
2799 * @dev: The parent device for the platform
2800 * @platform: The platform to add
2801 * @platform_driver: The driver for the platform
2803 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
2804 const struct snd_soc_platform_driver
*platform_drv
)
2808 ret
= snd_soc_component_initialize(&platform
->component
,
2809 &platform_drv
->component_driver
, dev
);
2813 platform
->dev
= dev
;
2814 platform
->driver
= platform_drv
;
2816 if (platform_drv
->probe
)
2817 platform
->component
.probe
= snd_soc_platform_drv_probe
;
2818 if (platform_drv
->remove
)
2819 platform
->component
.remove
= snd_soc_platform_drv_remove
;
2821 #ifdef CONFIG_DEBUG_FS
2822 platform
->component
.debugfs_prefix
= "platform";
2825 mutex_lock(&client_mutex
);
2826 snd_soc_component_add_unlocked(&platform
->component
);
2827 list_add(&platform
->list
, &platform_list
);
2828 mutex_unlock(&client_mutex
);
2830 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
2831 platform
->component
.name
);
2835 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
2838 * snd_soc_register_platform - Register a platform with the ASoC core
2840 * @platform: platform to register
2842 int snd_soc_register_platform(struct device
*dev
,
2843 const struct snd_soc_platform_driver
*platform_drv
)
2845 struct snd_soc_platform
*platform
;
2848 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
2850 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
2851 if (platform
== NULL
)
2854 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
2860 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
2863 * snd_soc_remove_platform - Remove a platform from the ASoC core
2864 * @platform: the platform to remove
2866 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
2869 mutex_lock(&client_mutex
);
2870 list_del(&platform
->list
);
2871 snd_soc_component_del_unlocked(&platform
->component
);
2872 mutex_unlock(&client_mutex
);
2874 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
2875 platform
->component
.name
);
2877 snd_soc_component_cleanup(&platform
->component
);
2879 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
2881 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
2883 struct snd_soc_platform
*platform
;
2885 list_for_each_entry(platform
, &platform_list
, list
) {
2886 if (dev
== platform
->dev
)
2892 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
2895 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
2897 * @platform: platform to unregister
2899 void snd_soc_unregister_platform(struct device
*dev
)
2901 struct snd_soc_platform
*platform
;
2903 platform
= snd_soc_lookup_platform(dev
);
2907 snd_soc_remove_platform(platform
);
2910 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
2912 static u64 codec_format_map
[] = {
2913 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
2914 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
2915 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
2916 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
2917 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
2918 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
2919 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2920 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2921 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
2922 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
2923 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
2924 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
2925 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
2926 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
2927 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
2928 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
2931 /* Fix up the DAI formats for endianness: codecs don't actually see
2932 * the endianness of the data but we're using the CPU format
2933 * definitions which do need to include endianness so we ensure that
2934 * codec DAIs always have both big and little endian variants set.
2936 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
2940 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
2941 if (stream
->formats
& codec_format_map
[i
])
2942 stream
->formats
|= codec_format_map
[i
];
2945 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
2947 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2949 return codec
->driver
->probe(codec
);
2952 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
2954 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2956 codec
->driver
->remove(codec
);
2959 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
2960 unsigned int reg
, unsigned int val
)
2962 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2964 return codec
->driver
->write(codec
, reg
, val
);
2967 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
2968 unsigned int reg
, unsigned int *val
)
2970 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2972 *val
= codec
->driver
->read(codec
, reg
);
2977 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
2978 enum snd_soc_bias_level level
)
2980 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
2982 return codec
->driver
->set_bias_level(codec
, level
);
2986 * snd_soc_register_codec - Register a codec with the ASoC core
2988 * @codec: codec to register
2990 int snd_soc_register_codec(struct device
*dev
,
2991 const struct snd_soc_codec_driver
*codec_drv
,
2992 struct snd_soc_dai_driver
*dai_drv
,
2995 struct snd_soc_codec
*codec
;
2996 struct snd_soc_dai
*dai
;
2999 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3001 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3005 codec
->component
.dapm_ptr
= &codec
->dapm
;
3006 codec
->component
.codec
= codec
;
3008 ret
= snd_soc_component_initialize(&codec
->component
,
3009 &codec_drv
->component_driver
, dev
);
3013 if (codec_drv
->controls
) {
3014 codec
->component
.controls
= codec_drv
->controls
;
3015 codec
->component
.num_controls
= codec_drv
->num_controls
;
3017 if (codec_drv
->dapm_widgets
) {
3018 codec
->component
.dapm_widgets
= codec_drv
->dapm_widgets
;
3019 codec
->component
.num_dapm_widgets
= codec_drv
->num_dapm_widgets
;
3021 if (codec_drv
->dapm_routes
) {
3022 codec
->component
.dapm_routes
= codec_drv
->dapm_routes
;
3023 codec
->component
.num_dapm_routes
= codec_drv
->num_dapm_routes
;
3026 if (codec_drv
->probe
)
3027 codec
->component
.probe
= snd_soc_codec_drv_probe
;
3028 if (codec_drv
->remove
)
3029 codec
->component
.remove
= snd_soc_codec_drv_remove
;
3030 if (codec_drv
->write
)
3031 codec
->component
.write
= snd_soc_codec_drv_write
;
3032 if (codec_drv
->read
)
3033 codec
->component
.read
= snd_soc_codec_drv_read
;
3034 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3035 codec
->dapm
.idle_bias_off
= codec_drv
->idle_bias_off
;
3036 codec
->dapm
.suspend_bias_off
= codec_drv
->suspend_bias_off
;
3037 if (codec_drv
->seq_notifier
)
3038 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3039 if (codec_drv
->set_bias_level
)
3040 codec
->dapm
.set_bias_level
= snd_soc_codec_set_bias_level
;
3042 codec
->driver
= codec_drv
;
3043 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3045 #ifdef CONFIG_DEBUG_FS
3046 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3047 codec
->component
.debugfs_prefix
= "codec";
3050 if (codec_drv
->get_regmap
)
3051 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3053 for (i
= 0; i
< num_dai
; i
++) {
3054 fixup_codec_formats(&dai_drv
[i
].playback
);
3055 fixup_codec_formats(&dai_drv
[i
].capture
);
3058 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3060 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
3064 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3067 mutex_lock(&client_mutex
);
3068 snd_soc_component_add_unlocked(&codec
->component
);
3069 list_add(&codec
->list
, &codec_list
);
3070 mutex_unlock(&client_mutex
);
3072 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3073 codec
->component
.name
);
3077 snd_soc_component_cleanup(&codec
->component
);
3082 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3085 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3087 * @codec: codec to unregister
3089 void snd_soc_unregister_codec(struct device
*dev
)
3091 struct snd_soc_codec
*codec
;
3093 list_for_each_entry(codec
, &codec_list
, list
) {
3094 if (dev
== codec
->dev
)
3101 mutex_lock(&client_mutex
);
3102 list_del(&codec
->list
);
3103 snd_soc_component_del_unlocked(&codec
->component
);
3104 mutex_unlock(&client_mutex
);
3106 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3107 codec
->component
.name
);
3109 snd_soc_component_cleanup(&codec
->component
);
3110 snd_soc_cache_exit(codec
);
3113 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3115 /* Retrieve a card's name from device tree */
3116 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3117 const char *propname
)
3119 struct device_node
*np
;
3123 pr_err("card->dev is not set before calling %s\n", __func__
);
3127 np
= card
->dev
->of_node
;
3129 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3131 * EINVAL means the property does not exist. This is fine providing
3132 * card->name was previously set, which is checked later in
3133 * snd_soc_register_card.
3135 if (ret
< 0 && ret
!= -EINVAL
) {
3137 "ASoC: Property '%s' could not be read: %d\n",
3144 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3146 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3147 SND_SOC_DAPM_MIC("Microphone", NULL
),
3148 SND_SOC_DAPM_LINE("Line", NULL
),
3149 SND_SOC_DAPM_HP("Headphone", NULL
),
3150 SND_SOC_DAPM_SPK("Speaker", NULL
),
3153 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3154 const char *propname
)
3156 struct device_node
*np
= card
->dev
->of_node
;
3157 struct snd_soc_dapm_widget
*widgets
;
3158 const char *template, *wname
;
3159 int i
, j
, num_widgets
, ret
;
3161 num_widgets
= of_property_count_strings(np
, propname
);
3162 if (num_widgets
< 0) {
3164 "ASoC: Property '%s' does not exist\n", propname
);
3167 if (num_widgets
& 1) {
3169 "ASoC: Property '%s' length is not even\n", propname
);
3175 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3180 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3184 "ASoC: Could not allocate memory for widgets\n");
3188 for (i
= 0; i
< num_widgets
; i
++) {
3189 ret
= of_property_read_string_index(np
, propname
,
3193 "ASoC: Property '%s' index %d read error:%d\n",
3194 propname
, 2 * i
, ret
);
3198 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3199 if (!strncmp(template, simple_widgets
[j
].name
,
3200 strlen(simple_widgets
[j
].name
))) {
3201 widgets
[i
] = simple_widgets
[j
];
3206 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3208 "ASoC: DAPM widget '%s' is not supported\n",
3213 ret
= of_property_read_string_index(np
, propname
,
3218 "ASoC: Property '%s' index %d read error:%d\n",
3219 propname
, (2 * i
) + 1, ret
);
3223 widgets
[i
].name
= wname
;
3226 card
->dapm_widgets
= widgets
;
3227 card
->num_dapm_widgets
= num_widgets
;
3231 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3233 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3234 unsigned int *slots
,
3235 unsigned int *slot_width
)
3240 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3241 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3249 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3250 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
3260 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
3262 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3263 const char *propname
)
3265 struct device_node
*np
= card
->dev
->of_node
;
3267 struct snd_soc_dapm_route
*routes
;
3270 num_routes
= of_property_count_strings(np
, propname
);
3271 if (num_routes
< 0 || num_routes
& 1) {
3273 "ASoC: Property '%s' does not exist or its length is not even\n",
3279 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3284 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3288 "ASoC: Could not allocate DAPM route table\n");
3292 for (i
= 0; i
< num_routes
; i
++) {
3293 ret
= of_property_read_string_index(np
, propname
,
3294 2 * i
, &routes
[i
].sink
);
3297 "ASoC: Property '%s' index %d could not be read: %d\n",
3298 propname
, 2 * i
, ret
);
3301 ret
= of_property_read_string_index(np
, propname
,
3302 (2 * i
) + 1, &routes
[i
].source
);
3305 "ASoC: Property '%s' index %d could not be read: %d\n",
3306 propname
, (2 * i
) + 1, ret
);
3311 card
->num_dapm_routes
= num_routes
;
3312 card
->dapm_routes
= routes
;
3316 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3318 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
3320 struct device_node
**bitclkmaster
,
3321 struct device_node
**framemaster
)
3325 unsigned int format
= 0;
3331 } of_fmt_table
[] = {
3332 { "i2s", SND_SOC_DAIFMT_I2S
},
3333 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
3334 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
3335 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
3336 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
3337 { "ac97", SND_SOC_DAIFMT_AC97
},
3338 { "pdm", SND_SOC_DAIFMT_PDM
},
3339 { "msb", SND_SOC_DAIFMT_MSB
},
3340 { "lsb", SND_SOC_DAIFMT_LSB
},
3347 * check "[prefix]format = xxx"
3348 * SND_SOC_DAIFMT_FORMAT_MASK area
3350 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
3351 ret
= of_property_read_string(np
, prop
, &str
);
3353 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
3354 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
3355 format
|= of_fmt_table
[i
].val
;
3362 * check "[prefix]continuous-clock"
3363 * SND_SOC_DAIFMT_CLOCK_MASK area
3365 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
3366 if (of_get_property(np
, prop
, NULL
))
3367 format
|= SND_SOC_DAIFMT_CONT
;
3369 format
|= SND_SOC_DAIFMT_GATED
;
3372 * check "[prefix]bitclock-inversion"
3373 * check "[prefix]frame-inversion"
3374 * SND_SOC_DAIFMT_INV_MASK area
3376 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
3377 bit
= !!of_get_property(np
, prop
, NULL
);
3379 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
3380 frame
= !!of_get_property(np
, prop
, NULL
);
3382 switch ((bit
<< 4) + frame
) {
3384 format
|= SND_SOC_DAIFMT_IB_IF
;
3387 format
|= SND_SOC_DAIFMT_IB_NF
;
3390 format
|= SND_SOC_DAIFMT_NB_IF
;
3393 /* SND_SOC_DAIFMT_NB_NF is default */
3398 * check "[prefix]bitclock-master"
3399 * check "[prefix]frame-master"
3400 * SND_SOC_DAIFMT_MASTER_MASK area
3402 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
3403 bit
= !!of_get_property(np
, prop
, NULL
);
3404 if (bit
&& bitclkmaster
)
3405 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
3407 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
3408 frame
= !!of_get_property(np
, prop
, NULL
);
3409 if (frame
&& framemaster
)
3410 *framemaster
= of_parse_phandle(np
, prop
, 0);
3412 switch ((bit
<< 4) + frame
) {
3414 format
|= SND_SOC_DAIFMT_CBM_CFM
;
3417 format
|= SND_SOC_DAIFMT_CBM_CFS
;
3420 format
|= SND_SOC_DAIFMT_CBS_CFM
;
3423 format
|= SND_SOC_DAIFMT_CBS_CFS
;
3429 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
3431 static int snd_soc_get_dai_name(struct of_phandle_args
*args
,
3432 const char **dai_name
)
3434 struct snd_soc_component
*pos
;
3435 int ret
= -EPROBE_DEFER
;
3437 mutex_lock(&client_mutex
);
3438 list_for_each_entry(pos
, &component_list
, list
) {
3439 if (pos
->dev
->of_node
!= args
->np
)
3442 if (pos
->driver
->of_xlate_dai_name
) {
3443 ret
= pos
->driver
->of_xlate_dai_name(pos
,
3449 switch (args
->args_count
) {
3451 id
= 0; /* same as dai_drv[0] */
3461 if (id
< 0 || id
>= pos
->num_dai
) {
3468 *dai_name
= pos
->dai_drv
[id
].name
;
3470 *dai_name
= pos
->name
;
3475 mutex_unlock(&client_mutex
);
3479 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
3480 const char **dai_name
)
3482 struct of_phandle_args args
;
3485 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
3486 "#sound-dai-cells", 0, &args
);
3490 ret
= snd_soc_get_dai_name(&args
, dai_name
);
3492 of_node_put(args
.np
);
3496 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
3499 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3501 * @of_node: Device node
3502 * @dai_link: DAI link
3504 * Builds an array of CODEC DAI components from the DAI link property
3506 * The array is set in the DAI link and the number of DAIs is set accordingly.
3507 * The device nodes in the array (of_node) must be dereferenced by the caller.
3509 * Returns 0 for success
3511 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
3512 struct device_node
*of_node
,
3513 struct snd_soc_dai_link
*dai_link
)
3515 struct of_phandle_args args
;
3516 struct snd_soc_dai_link_component
*component
;
3518 int index
, num_codecs
, ret
;
3520 /* Count the number of CODECs */
3522 num_codecs
= of_count_phandle_with_args(of_node
, name
,
3523 "#sound-dai-cells");
3524 if (num_codecs
<= 0) {
3525 if (num_codecs
== -ENOENT
)
3526 dev_err(dev
, "No 'sound-dai' property\n");
3528 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
3531 component
= devm_kzalloc(dev
,
3532 sizeof *component
* num_codecs
,
3536 dai_link
->codecs
= component
;
3537 dai_link
->num_codecs
= num_codecs
;
3539 /* Parse the list */
3540 for (index
= 0, component
= dai_link
->codecs
;
3541 index
< dai_link
->num_codecs
;
3542 index
++, component
++) {
3543 ret
= of_parse_phandle_with_args(of_node
, name
,
3548 component
->of_node
= args
.np
;
3549 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
3555 for (index
= 0, component
= dai_link
->codecs
;
3556 index
< dai_link
->num_codecs
;
3557 index
++, component
++) {
3558 if (!component
->of_node
)
3560 of_node_put(component
->of_node
);
3561 component
->of_node
= NULL
;
3563 dai_link
->codecs
= NULL
;
3564 dai_link
->num_codecs
= 0;
3567 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
3569 static int __init
snd_soc_init(void)
3571 #ifdef CONFIG_DEBUG_FS
3572 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3573 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3574 pr_warn("ASoC: Failed to create debugfs directory\n");
3575 snd_soc_debugfs_root
= NULL
;
3578 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3580 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3582 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3584 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3586 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3587 &platform_list_fops
))
3588 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3591 snd_soc_util_init();
3593 return platform_driver_register(&soc_driver
);
3595 module_init(snd_soc_init
);
3597 static void __exit
snd_soc_exit(void)
3599 snd_soc_util_exit();
3601 #ifdef CONFIG_DEBUG_FS
3602 debugfs_remove_recursive(snd_soc_debugfs_root
);
3604 platform_driver_unregister(&soc_driver
);
3606 module_exit(snd_soc_exit
);
3608 /* Module information */
3609 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3610 MODULE_DESCRIPTION("ALSA SoC Core");
3611 MODULE_LICENSE("GPL");
3612 MODULE_ALIAS("platform:soc-audio");