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 #ifdef CONFIG_DEBUG_FS
195 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
196 size_t count
, loff_t
*ppos
)
199 struct snd_soc_codec
*codec
= file
->private_data
;
202 if (*ppos
< 0 || !count
)
205 buf
= kmalloc(count
, GFP_KERNEL
);
209 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
211 if (copy_to_user(user_buf
, buf
, ret
)) {
222 static ssize_t
codec_reg_write_file(struct file
*file
,
223 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
228 unsigned long reg
, value
;
229 struct snd_soc_codec
*codec
= file
->private_data
;
232 buf_size
= min(count
, (sizeof(buf
)-1));
233 if (copy_from_user(buf
, user_buf
, buf_size
))
237 while (*start
== ' ')
239 reg
= simple_strtoul(start
, &start
, 16);
240 while (*start
== ' ')
242 ret
= kstrtoul(start
, 16, &value
);
246 /* Userspace has been fiddling around behind the kernel's back */
247 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
249 snd_soc_write(codec
, reg
, value
);
253 static const struct file_operations codec_reg_fops
= {
255 .read
= codec_reg_read_file
,
256 .write
= codec_reg_write_file
,
257 .llseek
= default_llseek
,
260 static void soc_init_component_debugfs(struct snd_soc_component
*component
)
262 if (component
->debugfs_prefix
) {
265 name
= kasprintf(GFP_KERNEL
, "%s:%s",
266 component
->debugfs_prefix
, component
->name
);
268 component
->debugfs_root
= debugfs_create_dir(name
,
269 component
->card
->debugfs_card_root
);
273 component
->debugfs_root
= debugfs_create_dir(component
->name
,
274 component
->card
->debugfs_card_root
);
277 if (!component
->debugfs_root
) {
278 dev_warn(component
->dev
,
279 "ASoC: Failed to create component debugfs directory\n");
283 snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component
),
284 component
->debugfs_root
);
286 if (component
->init_debugfs
)
287 component
->init_debugfs(component
);
290 static void soc_cleanup_component_debugfs(struct snd_soc_component
*component
)
292 debugfs_remove_recursive(component
->debugfs_root
);
295 static void soc_init_codec_debugfs(struct snd_soc_component
*component
)
297 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
299 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
300 codec
->component
.debugfs_root
,
301 codec
, &codec_reg_fops
);
302 if (!codec
->debugfs_reg
)
304 "ASoC: Failed to create codec register debugfs file\n");
307 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
308 size_t count
, loff_t
*ppos
)
310 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
311 ssize_t len
, ret
= 0;
312 struct snd_soc_codec
*codec
;
317 list_for_each_entry(codec
, &codec_list
, list
) {
318 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
319 codec
->component
.name
);
322 if (ret
> PAGE_SIZE
) {
329 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
336 static const struct file_operations codec_list_fops
= {
337 .read
= codec_list_read_file
,
338 .llseek
= default_llseek
,/* read accesses f_pos */
341 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
342 size_t count
, loff_t
*ppos
)
344 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
345 ssize_t len
, ret
= 0;
346 struct snd_soc_component
*component
;
347 struct snd_soc_dai
*dai
;
352 list_for_each_entry(component
, &component_list
, list
) {
353 list_for_each_entry(dai
, &component
->dai_list
, list
) {
354 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
358 if (ret
> PAGE_SIZE
) {
365 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
372 static const struct file_operations dai_list_fops
= {
373 .read
= dai_list_read_file
,
374 .llseek
= default_llseek
,/* read accesses f_pos */
377 static ssize_t
platform_list_read_file(struct file
*file
,
378 char __user
*user_buf
,
379 size_t count
, loff_t
*ppos
)
381 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
382 ssize_t len
, ret
= 0;
383 struct snd_soc_platform
*platform
;
388 list_for_each_entry(platform
, &platform_list
, list
) {
389 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
390 platform
->component
.name
);
393 if (ret
> PAGE_SIZE
) {
399 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
406 static const struct file_operations platform_list_fops
= {
407 .read
= platform_list_read_file
,
408 .llseek
= default_llseek
,/* read accesses f_pos */
411 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
413 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
414 snd_soc_debugfs_root
);
415 if (!card
->debugfs_card_root
) {
417 "ASoC: Failed to create card debugfs directory\n");
421 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
422 card
->debugfs_card_root
,
424 if (!card
->debugfs_pop_time
)
426 "ASoC: Failed to create pop time debugfs file\n");
429 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
431 debugfs_remove_recursive(card
->debugfs_card_root
);
436 #define soc_init_codec_debugfs NULL
438 static inline void soc_init_component_debugfs(
439 struct snd_soc_component
*component
)
443 static inline void soc_cleanup_component_debugfs(
444 struct snd_soc_component
*component
)
448 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
452 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
457 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
458 const char *dai_link
, int stream
)
462 for (i
= 0; i
< card
->num_links
; i
++) {
463 if (card
->rtd
[i
].dai_link
->no_pcm
&&
464 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
465 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
467 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
470 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
472 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
473 const char *dai_link
)
477 for (i
= 0; i
< card
->num_links
; i
++) {
478 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
479 return &card
->rtd
[i
];
481 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
484 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
486 static void codec2codec_close_delayed_work(struct work_struct
*work
)
488 /* Currently nothing to do for c2c links
489 * Since c2c links are internal nodes in the DAPM graph and
490 * don't interface with the outside world or application layer
491 * we don't have to do any special handling on close.
495 #ifdef CONFIG_PM_SLEEP
496 /* powers down audio subsystem for suspend */
497 int snd_soc_suspend(struct device
*dev
)
499 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
500 struct snd_soc_codec
*codec
;
503 /* If the card is not initialized yet there is nothing to do */
504 if (!card
->instantiated
)
507 /* Due to the resume being scheduled into a workqueue we could
508 * suspend before that's finished - wait for it to complete.
510 snd_power_lock(card
->snd_card
);
511 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
512 snd_power_unlock(card
->snd_card
);
514 /* we're going to block userspace touching us until resume completes */
515 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
517 /* mute any active DACs */
518 for (i
= 0; i
< card
->num_rtd
; i
++) {
520 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
523 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
524 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
525 struct snd_soc_dai_driver
*drv
= dai
->driver
;
527 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
528 drv
->ops
->digital_mute(dai
, 1);
532 /* suspend all pcms */
533 for (i
= 0; i
< card
->num_rtd
; i
++) {
534 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
537 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
540 if (card
->suspend_pre
)
541 card
->suspend_pre(card
);
543 for (i
= 0; i
< card
->num_rtd
; i
++) {
544 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
546 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
549 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->bus_control
)
550 cpu_dai
->driver
->suspend(cpu_dai
);
553 /* close any waiting streams and save state */
554 for (i
= 0; i
< card
->num_rtd
; i
++) {
555 struct snd_soc_dai
**codec_dais
= card
->rtd
[i
].codec_dais
;
556 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
557 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
558 codec_dais
[j
]->codec
->dapm
.suspend_bias_level
=
559 codec_dais
[j
]->codec
->dapm
.bias_level
;
563 for (i
= 0; i
< card
->num_rtd
; i
++) {
565 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
568 snd_soc_dapm_stream_event(&card
->rtd
[i
],
569 SNDRV_PCM_STREAM_PLAYBACK
,
570 SND_SOC_DAPM_STREAM_SUSPEND
);
572 snd_soc_dapm_stream_event(&card
->rtd
[i
],
573 SNDRV_PCM_STREAM_CAPTURE
,
574 SND_SOC_DAPM_STREAM_SUSPEND
);
577 /* Recheck all endpoints too, their state is affected by suspend */
578 dapm_mark_endpoints_dirty(card
);
579 snd_soc_dapm_sync(&card
->dapm
);
581 /* suspend all CODECs */
582 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
583 /* If there are paths active then the CODEC will be held with
584 * bias _ON and should not be suspended. */
585 if (!codec
->suspended
) {
586 switch (codec
->dapm
.bias_level
) {
587 case SND_SOC_BIAS_STANDBY
:
589 * If the CODEC is capable of idle
590 * bias off then being in STANDBY
591 * means it's doing something,
592 * otherwise fall through.
594 if (codec
->dapm
.idle_bias_off
) {
596 "ASoC: idle_bias_off CODEC on over suspend\n");
600 case SND_SOC_BIAS_OFF
:
601 if (codec
->driver
->suspend
)
602 codec
->driver
->suspend(codec
);
603 codec
->suspended
= 1;
604 if (codec
->component
.regmap
)
605 regcache_mark_dirty(codec
->component
.regmap
);
606 /* deactivate pins to sleep state */
607 pinctrl_pm_select_sleep_state(codec
->dev
);
611 "ASoC: CODEC is on over suspend\n");
617 for (i
= 0; i
< card
->num_rtd
; i
++) {
618 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
620 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
623 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->bus_control
)
624 cpu_dai
->driver
->suspend(cpu_dai
);
626 /* deactivate pins to sleep state */
627 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
630 if (card
->suspend_post
)
631 card
->suspend_post(card
);
635 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
637 /* deferred resume work, so resume can complete before we finished
638 * setting our codec back up, which can be very slow on I2C
640 static void soc_resume_deferred(struct work_struct
*work
)
642 struct snd_soc_card
*card
=
643 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
644 struct snd_soc_codec
*codec
;
647 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
648 * so userspace apps are blocked from touching us
651 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
653 /* Bring us up into D2 so that DAPM starts enabling things */
654 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
656 if (card
->resume_pre
)
657 card
->resume_pre(card
);
659 /* resume control bus DAIs */
660 for (i
= 0; i
< card
->num_rtd
; i
++) {
661 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
663 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
666 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->bus_control
)
667 cpu_dai
->driver
->resume(cpu_dai
);
670 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
671 /* If the CODEC was idle over suspend then it will have been
672 * left with bias OFF or STANDBY and suspended so we must now
673 * resume. Otherwise the suspend was suppressed.
675 if (codec
->suspended
) {
676 switch (codec
->dapm
.bias_level
) {
677 case SND_SOC_BIAS_STANDBY
:
678 case SND_SOC_BIAS_OFF
:
679 if (codec
->driver
->resume
)
680 codec
->driver
->resume(codec
);
681 codec
->suspended
= 0;
685 "ASoC: CODEC was on over suspend\n");
691 for (i
= 0; i
< card
->num_rtd
; i
++) {
693 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
696 snd_soc_dapm_stream_event(&card
->rtd
[i
],
697 SNDRV_PCM_STREAM_PLAYBACK
,
698 SND_SOC_DAPM_STREAM_RESUME
);
700 snd_soc_dapm_stream_event(&card
->rtd
[i
],
701 SNDRV_PCM_STREAM_CAPTURE
,
702 SND_SOC_DAPM_STREAM_RESUME
);
705 /* unmute any active DACs */
706 for (i
= 0; i
< card
->num_rtd
; i
++) {
708 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
711 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
712 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
713 struct snd_soc_dai_driver
*drv
= dai
->driver
;
715 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
716 drv
->ops
->digital_mute(dai
, 0);
720 for (i
= 0; i
< card
->num_rtd
; i
++) {
721 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
723 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
726 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->bus_control
)
727 cpu_dai
->driver
->resume(cpu_dai
);
730 if (card
->resume_post
)
731 card
->resume_post(card
);
733 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
735 /* userspace can access us now we are back as we were before */
736 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
738 /* Recheck all endpoints too, their state is affected by suspend */
739 dapm_mark_endpoints_dirty(card
);
740 snd_soc_dapm_sync(&card
->dapm
);
743 /* powers up audio subsystem after a suspend */
744 int snd_soc_resume(struct device
*dev
)
746 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
747 bool bus_control
= false;
750 /* If the card is not initialized yet there is nothing to do */
751 if (!card
->instantiated
)
754 /* activate pins from sleep state */
755 for (i
= 0; i
< card
->num_rtd
; i
++) {
756 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
757 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
758 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
762 pinctrl_pm_select_default_state(cpu_dai
->dev
);
764 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
765 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
766 if (codec_dai
->active
)
767 pinctrl_pm_select_default_state(codec_dai
->dev
);
772 * DAIs that also act as the control bus master might have other drivers
773 * hanging off them so need to resume immediately. Other drivers don't
774 * have that problem and may take a substantial amount of time to resume
775 * due to I/O costs and anti-pop so handle them out of line.
777 for (i
= 0; i
< card
->num_rtd
; i
++) {
778 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
779 bus_control
|= cpu_dai
->driver
->bus_control
;
782 dev_dbg(dev
, "ASoC: Resuming control bus master immediately\n");
783 soc_resume_deferred(&card
->deferred_resume_work
);
785 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
786 if (!schedule_work(&card
->deferred_resume_work
))
787 dev_err(dev
, "ASoC: resume work item may be lost\n");
792 EXPORT_SYMBOL_GPL(snd_soc_resume
);
794 #define snd_soc_suspend NULL
795 #define snd_soc_resume NULL
798 static const struct snd_soc_dai_ops null_dai_ops
= {
801 static struct snd_soc_component
*soc_find_component(
802 const struct device_node
*of_node
, const char *name
)
804 struct snd_soc_component
*component
;
806 list_for_each_entry(component
, &component_list
, list
) {
808 if (component
->dev
->of_node
== of_node
)
810 } else if (strcmp(component
->name
, name
) == 0) {
818 static struct snd_soc_dai
*snd_soc_find_dai(
819 const struct snd_soc_dai_link_component
*dlc
)
821 struct snd_soc_component
*component
;
822 struct snd_soc_dai
*dai
;
824 /* Find CPU DAI from registered DAIs*/
825 list_for_each_entry(component
, &component_list
, list
) {
826 if (dlc
->of_node
&& component
->dev
->of_node
!= dlc
->of_node
)
828 if (dlc
->name
&& strcmp(component
->name
, dlc
->name
))
830 list_for_each_entry(dai
, &component
->dai_list
, list
) {
831 if (dlc
->dai_name
&& strcmp(dai
->name
, dlc
->dai_name
))
841 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
843 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
844 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
845 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
846 struct snd_soc_dai_link_component cpu_dai_component
;
847 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
848 struct snd_soc_platform
*platform
;
849 const char *platform_name
;
852 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
854 cpu_dai_component
.name
= dai_link
->cpu_name
;
855 cpu_dai_component
.of_node
= dai_link
->cpu_of_node
;
856 cpu_dai_component
.dai_name
= dai_link
->cpu_dai_name
;
857 rtd
->cpu_dai
= snd_soc_find_dai(&cpu_dai_component
);
859 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
860 dai_link
->cpu_dai_name
);
861 return -EPROBE_DEFER
;
864 rtd
->num_codecs
= dai_link
->num_codecs
;
866 /* Find CODEC from registered CODECs */
867 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
868 codec_dais
[i
] = snd_soc_find_dai(&codecs
[i
]);
869 if (!codec_dais
[i
]) {
870 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
872 return -EPROBE_DEFER
;
876 /* Single codec links expect codec and codec_dai in runtime data */
877 rtd
->codec_dai
= codec_dais
[0];
878 rtd
->codec
= rtd
->codec_dai
->codec
;
880 /* if there's no platform we match on the empty platform */
881 platform_name
= dai_link
->platform_name
;
882 if (!platform_name
&& !dai_link
->platform_of_node
)
883 platform_name
= "snd-soc-dummy";
885 /* find one from the set of registered platforms */
886 list_for_each_entry(platform
, &platform_list
, list
) {
887 if (dai_link
->platform_of_node
) {
888 if (platform
->dev
->of_node
!=
889 dai_link
->platform_of_node
)
892 if (strcmp(platform
->component
.name
, platform_name
))
896 rtd
->platform
= platform
;
898 if (!rtd
->platform
) {
899 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
900 dai_link
->platform_name
);
901 return -EPROBE_DEFER
;
909 static void soc_remove_component(struct snd_soc_component
*component
)
911 if (!component
->probed
)
914 /* This is a HACK and will be removed soon */
915 if (component
->codec
)
916 list_del(&component
->codec
->card_list
);
918 if (component
->remove
)
919 component
->remove(component
);
921 snd_soc_dapm_free(snd_soc_component_get_dapm(component
));
923 soc_cleanup_component_debugfs(component
);
924 component
->probed
= 0;
925 module_put(component
->dev
->driver
->owner
);
928 static void soc_remove_dai(struct snd_soc_dai
*dai
, int order
)
932 if (dai
&& dai
->probed
&&
933 dai
->driver
->remove_order
== order
) {
934 if (dai
->driver
->remove
) {
935 err
= dai
->driver
->remove(dai
);
938 "ASoC: failed to remove %s: %d\n",
945 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
947 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
950 /* unregister the rtd device */
951 if (rtd
->dev_registered
) {
952 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
953 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
954 device_unregister(rtd
->dev
);
955 rtd
->dev_registered
= 0;
958 /* remove the CODEC DAI */
959 for (i
= 0; i
< rtd
->num_codecs
; i
++)
960 soc_remove_dai(rtd
->codec_dais
[i
], order
);
962 soc_remove_dai(rtd
->cpu_dai
, order
);
965 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
968 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
969 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
970 struct snd_soc_platform
*platform
= rtd
->platform
;
971 struct snd_soc_component
*component
;
974 /* remove the platform */
975 if (platform
&& platform
->component
.driver
->remove_order
== order
)
976 soc_remove_component(&platform
->component
);
978 /* remove the CODEC-side CODEC */
979 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
980 component
= rtd
->codec_dais
[i
]->component
;
981 if (component
->driver
->remove_order
== order
)
982 soc_remove_component(component
);
985 /* remove any CPU-side CODEC */
987 if (cpu_dai
->component
->driver
->remove_order
== order
)
988 soc_remove_component(cpu_dai
->component
);
992 static void soc_remove_dai_links(struct snd_soc_card
*card
)
996 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
998 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
999 soc_remove_link_dais(card
, dai
, order
);
1002 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1004 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1005 soc_remove_link_components(card
, dai
, order
);
1011 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1012 struct snd_soc_component
*component
)
1016 if (card
->codec_conf
== NULL
)
1019 for (i
= 0; i
< card
->num_configs
; i
++) {
1020 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1021 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1023 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1025 component
->name_prefix
= map
->name_prefix
;
1030 static int soc_probe_component(struct snd_soc_card
*card
,
1031 struct snd_soc_component
*component
)
1033 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(component
);
1034 struct snd_soc_dai
*dai
;
1037 if (component
->probed
)
1040 component
->card
= card
;
1042 soc_set_name_prefix(card
, component
);
1044 if (!try_module_get(component
->dev
->driver
->owner
))
1047 soc_init_component_debugfs(component
);
1049 if (component
->dapm_widgets
) {
1050 ret
= snd_soc_dapm_new_controls(dapm
, component
->dapm_widgets
,
1051 component
->num_dapm_widgets
);
1054 dev_err(component
->dev
,
1055 "Failed to create new controls %d\n", ret
);
1060 list_for_each_entry(dai
, &component
->dai_list
, list
) {
1061 ret
= snd_soc_dapm_new_dai_widgets(dapm
, dai
);
1063 dev_err(component
->dev
,
1064 "Failed to create DAI widgets %d\n", ret
);
1069 if (component
->probe
) {
1070 ret
= component
->probe(component
);
1072 dev_err(component
->dev
,
1073 "ASoC: failed to probe component %d\n", ret
);
1077 WARN(dapm
->idle_bias_off
&&
1078 dapm
->bias_level
!= SND_SOC_BIAS_OFF
,
1079 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1083 if (component
->controls
)
1084 snd_soc_add_component_controls(component
, component
->controls
,
1085 component
->num_controls
);
1086 if (component
->dapm_routes
)
1087 snd_soc_dapm_add_routes(dapm
, component
->dapm_routes
,
1088 component
->num_dapm_routes
);
1090 component
->probed
= 1;
1091 list_add(&dapm
->list
, &card
->dapm_list
);
1093 /* This is a HACK and will be removed soon */
1094 if (component
->codec
)
1095 list_add(&component
->codec
->card_list
, &card
->codec_dev_list
);
1100 soc_cleanup_component_debugfs(component
);
1101 module_put(component
->dev
->driver
->owner
);
1106 static void rtd_release(struct device
*dev
)
1111 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1116 /* register the rtd device */
1117 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1120 device_initialize(rtd
->dev
);
1121 rtd
->dev
->parent
= rtd
->card
->dev
;
1122 rtd
->dev
->release
= rtd_release
;
1123 dev_set_name(rtd
->dev
, "%s", name
);
1124 dev_set_drvdata(rtd
->dev
, rtd
);
1125 mutex_init(&rtd
->pcm_mutex
);
1126 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1127 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1128 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1129 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1130 ret
= device_add(rtd
->dev
);
1132 /* calling put_device() here to free the rtd->dev */
1133 put_device(rtd
->dev
);
1134 dev_err(rtd
->card
->dev
,
1135 "ASoC: failed to register runtime device: %d\n", ret
);
1138 rtd
->dev_registered
= 1;
1141 /* add DAPM sysfs entries for this codec */
1142 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1145 "ASoC: failed to add codec dapm sysfs entries: %d\n",
1148 /* add codec sysfs entries */
1149 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1152 "ASoC: failed to add codec sysfs files: %d\n",
1159 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1162 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1163 struct snd_soc_platform
*platform
= rtd
->platform
;
1164 struct snd_soc_component
*component
;
1167 /* probe the CPU-side component, if it is a CODEC */
1168 component
= rtd
->cpu_dai
->component
;
1169 if (component
->driver
->probe_order
== order
) {
1170 ret
= soc_probe_component(card
, component
);
1175 /* probe the CODEC-side components */
1176 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1177 component
= rtd
->codec_dais
[i
]->component
;
1178 if (component
->driver
->probe_order
== order
) {
1179 ret
= soc_probe_component(card
, component
);
1185 /* probe the platform */
1186 if (platform
->component
.driver
->probe_order
== order
) {
1187 ret
= soc_probe_component(card
, &platform
->component
);
1195 static int soc_probe_dai(struct snd_soc_dai
*dai
, int order
)
1199 if (!dai
->probed
&& dai
->driver
->probe_order
== order
) {
1200 if (dai
->driver
->probe
) {
1201 ret
= dai
->driver
->probe(dai
);
1204 "ASoC: failed to probe DAI %s: %d\n",
1216 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1217 struct snd_soc_dai_link
*dai_link
,
1218 struct snd_soc_pcm_runtime
*rtd
)
1220 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1221 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1222 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1225 if (rtd
->num_codecs
> 1)
1226 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1228 /* link the DAI widgets */
1229 play_w
= codec_dai
->playback_widget
;
1230 capture_w
= cpu_dai
->capture_widget
;
1231 if (play_w
&& capture_w
) {
1232 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1235 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1236 play_w
->name
, capture_w
->name
, ret
);
1241 play_w
= cpu_dai
->playback_widget
;
1242 capture_w
= codec_dai
->capture_widget
;
1243 if (play_w
&& capture_w
) {
1244 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1247 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1248 play_w
->name
, capture_w
->name
, ret
);
1256 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1258 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1259 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1260 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1263 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1264 card
->name
, num
, order
);
1266 /* set default power off timeout */
1267 rtd
->pmdown_time
= pmdown_time
;
1269 ret
= soc_probe_dai(cpu_dai
, order
);
1273 /* probe the CODEC DAI */
1274 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1275 ret
= soc_probe_dai(rtd
->codec_dais
[i
], order
);
1280 /* complete DAI probe during last probe */
1281 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1284 /* do machine specific initialization */
1285 if (dai_link
->init
) {
1286 ret
= dai_link
->init(rtd
);
1288 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1289 dai_link
->name
, ret
);
1294 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1298 #ifdef CONFIG_DEBUG_FS
1299 /* add DPCM sysfs entries */
1300 if (dai_link
->dynamic
) {
1301 ret
= soc_dpcm_debugfs_add(rtd
);
1304 "ASoC: failed to add dpcm sysfs entries: %d\n",
1311 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1313 dev_warn(rtd
->dev
, "ASoC: failed to add pmdown_time sysfs: %d\n",
1316 if (cpu_dai
->driver
->compress_dai
) {
1317 /*create compress_device"*/
1318 ret
= soc_new_compress(rtd
, num
);
1320 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1321 dai_link
->stream_name
);
1326 if (!dai_link
->params
) {
1327 /* create the pcm */
1328 ret
= soc_new_pcm(rtd
, num
);
1330 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1331 dai_link
->stream_name
, ret
);
1335 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1336 codec2codec_close_delayed_work
);
1338 /* link the DAI widgets */
1339 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1348 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1350 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1351 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1352 const char *name
= aux_dev
->codec_name
;
1354 rtd
->component
= soc_find_component(aux_dev
->codec_of_node
, name
);
1355 if (!rtd
->component
) {
1356 if (aux_dev
->codec_of_node
)
1357 name
= of_node_full_name(aux_dev
->codec_of_node
);
1359 dev_err(card
->dev
, "ASoC: %s not registered\n", name
);
1360 return -EPROBE_DEFER
;
1364 * Some places still reference rtd->codec, so we have to keep that
1365 * initialized if the component is a CODEC. Once all those references
1366 * have been removed, this code can be removed as well.
1368 rtd
->codec
= rtd
->component
->codec
;
1373 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1375 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1376 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1379 ret
= soc_probe_component(card
, rtd
->component
);
1383 /* do machine specific initialization */
1384 if (aux_dev
->init
) {
1385 ret
= aux_dev
->init(rtd
->component
);
1387 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1388 aux_dev
->name
, ret
);
1393 return soc_post_component_init(rtd
, aux_dev
->name
);
1396 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1398 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1399 struct snd_soc_component
*component
= rtd
->component
;
1401 /* unregister the rtd device */
1402 if (rtd
->dev_registered
) {
1403 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1404 device_unregister(rtd
->dev
);
1405 rtd
->dev_registered
= 0;
1408 if (component
&& component
->probed
)
1409 soc_remove_component(component
);
1412 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1416 if (codec
->cache_init
)
1419 ret
= snd_soc_cache_init(codec
);
1422 "ASoC: Failed to set cache compression type: %d\n",
1426 codec
->cache_init
= 1;
1430 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1432 struct snd_soc_codec
*codec
;
1433 struct snd_soc_dai_link
*dai_link
;
1434 int ret
, i
, order
, dai_fmt
;
1436 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1439 for (i
= 0; i
< card
->num_links
; i
++) {
1440 ret
= soc_bind_dai_link(card
, i
);
1445 /* bind aux_devs too */
1446 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1447 ret
= soc_bind_aux_dev(card
, i
);
1452 /* initialize the register cache for each available codec */
1453 list_for_each_entry(codec
, &codec_list
, list
) {
1454 if (codec
->cache_init
)
1456 ret
= snd_soc_init_codec_cache(codec
);
1461 /* card bind complete so register a sound card */
1462 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1463 card
->owner
, 0, &card
->snd_card
);
1466 "ASoC: can't create sound card for card %s: %d\n",
1471 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1472 card
->dapm
.dev
= card
->dev
;
1473 card
->dapm
.card
= card
;
1474 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1476 #ifdef CONFIG_DEBUG_FS
1477 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1480 #ifdef CONFIG_PM_SLEEP
1481 /* deferred resume work */
1482 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1485 if (card
->dapm_widgets
)
1486 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1487 card
->num_dapm_widgets
);
1489 /* initialise the sound card only once */
1491 ret
= card
->probe(card
);
1493 goto card_probe_error
;
1496 /* probe all components used by DAI links on this card */
1497 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1499 for (i
= 0; i
< card
->num_links
; i
++) {
1500 ret
= soc_probe_link_components(card
, i
, order
);
1503 "ASoC: failed to instantiate card %d\n",
1510 /* probe all DAI links on this card */
1511 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1513 for (i
= 0; i
< card
->num_links
; i
++) {
1514 ret
= soc_probe_link_dais(card
, i
, order
);
1517 "ASoC: failed to instantiate card %d\n",
1524 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1525 ret
= soc_probe_aux_dev(card
, i
);
1528 "ASoC: failed to add auxiliary devices %d\n",
1530 goto probe_aux_dev_err
;
1534 snd_soc_dapm_link_dai_widgets(card
);
1535 snd_soc_dapm_connect_dai_link_widgets(card
);
1538 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1540 if (card
->dapm_routes
)
1541 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1542 card
->num_dapm_routes
);
1544 for (i
= 0; i
< card
->num_links
; i
++) {
1545 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1546 dai_link
= &card
->dai_link
[i
];
1547 dai_fmt
= dai_link
->dai_fmt
;
1550 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1553 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
1554 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
1556 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1557 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1558 dev_warn(codec_dai
->dev
,
1559 "ASoC: Failed to set DAI format: %d\n",
1564 /* If this is a regular CPU link there will be a platform */
1566 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1567 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1569 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1570 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1571 "ASoC: Failed to set DAI format: %d\n",
1573 } else if (dai_fmt
) {
1574 /* Flip the polarity for the "CPU" end */
1575 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1576 switch (dai_link
->dai_fmt
&
1577 SND_SOC_DAIFMT_MASTER_MASK
) {
1578 case SND_SOC_DAIFMT_CBM_CFM
:
1579 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1581 case SND_SOC_DAIFMT_CBM_CFS
:
1582 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1584 case SND_SOC_DAIFMT_CBS_CFM
:
1585 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1587 case SND_SOC_DAIFMT_CBS_CFS
:
1588 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1592 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1594 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1595 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1596 "ASoC: Failed to set DAI format: %d\n",
1601 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1603 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1604 "%s", card
->long_name
? card
->long_name
: card
->name
);
1605 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1606 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1607 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1608 switch (card
->snd_card
->driver
[i
]) {
1614 if (!isalnum(card
->snd_card
->driver
[i
]))
1615 card
->snd_card
->driver
[i
] = '_';
1620 if (card
->late_probe
) {
1621 ret
= card
->late_probe(card
);
1623 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1625 goto probe_aux_dev_err
;
1629 if (card
->fully_routed
)
1630 snd_soc_dapm_auto_nc_pins(card
);
1632 snd_soc_dapm_new_widgets(card
);
1634 ret
= snd_card_register(card
->snd_card
);
1636 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1638 goto probe_aux_dev_err
;
1641 card
->instantiated
= 1;
1642 snd_soc_dapm_sync(&card
->dapm
);
1643 mutex_unlock(&card
->mutex
);
1648 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1649 soc_remove_aux_dev(card
, i
);
1652 soc_remove_dai_links(card
);
1658 snd_card_free(card
->snd_card
);
1661 mutex_unlock(&card
->mutex
);
1666 /* probes a new socdev */
1667 static int soc_probe(struct platform_device
*pdev
)
1669 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1672 * no card, so machine driver should be registering card
1673 * we should not be here in that case so ret error
1678 dev_warn(&pdev
->dev
,
1679 "ASoC: machine %s should use snd_soc_register_card()\n",
1682 /* Bodge while we unpick instantiation */
1683 card
->dev
= &pdev
->dev
;
1685 return snd_soc_register_card(card
);
1688 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1692 /* make sure any delayed work runs */
1693 for (i
= 0; i
< card
->num_rtd
; i
++) {
1694 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1695 flush_delayed_work(&rtd
->delayed_work
);
1698 /* remove auxiliary devices */
1699 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1700 soc_remove_aux_dev(card
, i
);
1702 /* remove and free each DAI */
1703 soc_remove_dai_links(card
);
1705 soc_cleanup_card_debugfs(card
);
1707 /* remove the card */
1711 snd_soc_dapm_free(&card
->dapm
);
1713 snd_card_free(card
->snd_card
);
1718 /* removes a socdev */
1719 static int soc_remove(struct platform_device
*pdev
)
1721 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1723 snd_soc_unregister_card(card
);
1727 int snd_soc_poweroff(struct device
*dev
)
1729 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1732 if (!card
->instantiated
)
1735 /* Flush out pmdown_time work - we actually do want to run it
1736 * now, we're shutting down so no imminent restart. */
1737 for (i
= 0; i
< card
->num_rtd
; i
++) {
1738 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1739 flush_delayed_work(&rtd
->delayed_work
);
1742 snd_soc_dapm_shutdown(card
);
1744 /* deactivate pins to sleep state */
1745 for (i
= 0; i
< card
->num_rtd
; i
++) {
1746 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1747 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1750 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
1751 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
1752 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
1753 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
1759 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1761 const struct dev_pm_ops snd_soc_pm_ops
= {
1762 .suspend
= snd_soc_suspend
,
1763 .resume
= snd_soc_resume
,
1764 .freeze
= snd_soc_suspend
,
1765 .thaw
= snd_soc_resume
,
1766 .poweroff
= snd_soc_poweroff
,
1767 .restore
= snd_soc_resume
,
1769 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1771 /* ASoC platform driver */
1772 static struct platform_driver soc_driver
= {
1774 .name
= "soc-audio",
1775 .pm
= &snd_soc_pm_ops
,
1778 .remove
= soc_remove
,
1782 * snd_soc_cnew - create new control
1783 * @_template: control template
1784 * @data: control private data
1785 * @long_name: control long name
1786 * @prefix: control name prefix
1788 * Create a new mixer control from a template control.
1790 * Returns 0 for success, else error.
1792 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1793 void *data
, const char *long_name
,
1796 struct snd_kcontrol_new
template;
1797 struct snd_kcontrol
*kcontrol
;
1800 memcpy(&template, _template
, sizeof(template));
1804 long_name
= template.name
;
1807 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
1811 template.name
= name
;
1813 template.name
= long_name
;
1816 kcontrol
= snd_ctl_new1(&template, data
);
1822 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1824 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
1825 const struct snd_kcontrol_new
*controls
, int num_controls
,
1826 const char *prefix
, void *data
)
1830 for (i
= 0; i
< num_controls
; i
++) {
1831 const struct snd_kcontrol_new
*control
= &controls
[i
];
1832 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
1833 control
->name
, prefix
));
1835 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
1836 control
->name
, err
);
1844 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
1847 struct snd_card
*card
= soc_card
->snd_card
;
1848 struct snd_kcontrol
*kctl
;
1850 if (unlikely(!name
))
1853 list_for_each_entry(kctl
, &card
->controls
, list
)
1854 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
1858 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
1861 * snd_soc_add_component_controls - Add an array of controls to a component.
1863 * @component: Component to add controls to
1864 * @controls: Array of controls to add
1865 * @num_controls: Number of elements in the array
1867 * Return: 0 for success, else error.
1869 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
1870 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1872 struct snd_card
*card
= component
->card
->snd_card
;
1874 return snd_soc_add_controls(card
, component
->dev
, controls
,
1875 num_controls
, component
->name_prefix
, component
);
1877 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
1880 * snd_soc_add_codec_controls - add an array of controls to a codec.
1881 * Convenience function to add a list of controls. Many codecs were
1882 * duplicating this code.
1884 * @codec: codec 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_codec_controls(struct snd_soc_codec
*codec
,
1891 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1893 return snd_soc_add_component_controls(&codec
->component
, controls
,
1896 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
1899 * snd_soc_add_platform_controls - add an array of controls to a platform.
1900 * Convenience function to add a list of controls.
1902 * @platform: platform to add controls to
1903 * @controls: array of controls to add
1904 * @num_controls: number of elements in the array
1906 * Return 0 for success, else error.
1908 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
1909 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
1911 return snd_soc_add_component_controls(&platform
->component
, controls
,
1914 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
1917 * snd_soc_add_card_controls - add an array of controls to a SoC card.
1918 * Convenience function to add a list of controls.
1920 * @soc_card: SoC card to add controls to
1921 * @controls: array of controls to add
1922 * @num_controls: number of elements in the array
1924 * Return 0 for success, else error.
1926 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
1927 const struct snd_kcontrol_new
*controls
, int num_controls
)
1929 struct snd_card
*card
= soc_card
->snd_card
;
1931 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
1934 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
1937 * snd_soc_add_dai_controls - add an array of controls to a DAI.
1938 * Convienience function to add a list of controls.
1940 * @dai: DAI to add controls to
1941 * @controls: array of controls to add
1942 * @num_controls: number of elements in the array
1944 * Return 0 for success, else error.
1946 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
1947 const struct snd_kcontrol_new
*controls
, int num_controls
)
1949 struct snd_card
*card
= dai
->component
->card
->snd_card
;
1951 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
1954 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
1957 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
1959 * @clk_id: DAI specific clock ID
1960 * @freq: new clock frequency in Hz
1961 * @dir: new clock direction - input/output.
1963 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
1965 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
1966 unsigned int freq
, int dir
)
1968 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
1969 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
1970 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
1971 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
1976 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
1979 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
1981 * @clk_id: DAI specific clock ID
1982 * @source: Source for the clock
1983 * @freq: new clock frequency in Hz
1984 * @dir: new clock direction - input/output.
1986 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
1988 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
1989 int source
, unsigned int freq
, int dir
)
1991 if (codec
->driver
->set_sysclk
)
1992 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
1997 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2000 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2002 * @div_id: DAI specific clock divider ID
2003 * @div: new clock divisor.
2005 * Configures the clock dividers. This is used to derive the best DAI bit and
2006 * frame clocks from the system or master clock. It's best to set the DAI bit
2007 * and frame clocks as low as possible to save system power.
2009 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2010 int div_id
, int div
)
2012 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2013 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2017 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2020 * snd_soc_dai_set_pll - configure DAI PLL.
2022 * @pll_id: DAI specific PLL ID
2023 * @source: DAI specific source for the PLL
2024 * @freq_in: PLL input clock frequency in Hz
2025 * @freq_out: requested PLL output clock frequency in Hz
2027 * Configures and enables PLL to generate output clock based on input clock.
2029 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2030 unsigned int freq_in
, unsigned int freq_out
)
2032 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2033 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2035 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2036 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2041 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2044 * snd_soc_codec_set_pll - configure codec PLL.
2046 * @pll_id: DAI specific PLL ID
2047 * @source: DAI specific source for the PLL
2048 * @freq_in: PLL input clock frequency in Hz
2049 * @freq_out: requested PLL output clock frequency in Hz
2051 * Configures and enables PLL to generate output clock based on input clock.
2053 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2054 unsigned int freq_in
, unsigned int freq_out
)
2056 if (codec
->driver
->set_pll
)
2057 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2062 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2065 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
2067 * @ratio Ratio of BCLK to Sample rate.
2069 * Configures the DAI for a preset BCLK to sample rate ratio.
2071 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
2073 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
2074 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
2078 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
2081 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2083 * @fmt: SND_SOC_DAIFMT_ format value.
2085 * Configures the DAI hardware format and clocking.
2087 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2089 if (dai
->driver
== NULL
)
2091 if (dai
->driver
->ops
->set_fmt
== NULL
)
2093 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2095 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2098 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
2099 * @slots: Number of slots in use.
2100 * @tx_mask: bitmask representing active TX slots.
2101 * @rx_mask: bitmask representing active RX slots.
2103 * Generates the TDM tx and rx slot default masks for DAI.
2105 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
2106 unsigned int *tx_mask
,
2107 unsigned int *rx_mask
)
2109 if (*tx_mask
|| *rx_mask
)
2115 *tx_mask
= (1 << slots
) - 1;
2116 *rx_mask
= (1 << slots
) - 1;
2122 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2124 * @tx_mask: bitmask representing active TX slots.
2125 * @rx_mask: bitmask representing active RX slots.
2126 * @slots: Number of slots in use.
2127 * @slot_width: Width in bits for each slot.
2129 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2132 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2133 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2135 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
2136 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
2137 &tx_mask
, &rx_mask
);
2139 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
2141 dai
->tx_mask
= tx_mask
;
2142 dai
->rx_mask
= rx_mask
;
2144 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2145 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2150 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2153 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2155 * @tx_num: how many TX channels
2156 * @tx_slot: pointer to an array which imply the TX slot number channel
2158 * @rx_num: how many RX channels
2159 * @rx_slot: pointer to an array which imply the RX slot number channel
2162 * configure the relationship between channel number and TDM slot number.
2164 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2165 unsigned int tx_num
, unsigned int *tx_slot
,
2166 unsigned int rx_num
, unsigned int *rx_slot
)
2168 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2169 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2174 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2177 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2179 * @tristate: tristate enable
2181 * Tristates the DAI so that others can use it.
2183 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2185 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2186 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2190 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2193 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2195 * @mute: mute enable
2196 * @direction: stream to mute
2198 * Mutes the DAI DAC.
2200 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
2206 if (dai
->driver
->ops
->mute_stream
)
2207 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
2208 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
2209 dai
->driver
->ops
->digital_mute
)
2210 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2214 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2216 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
2217 struct snd_soc_dai_link
*dai_link
)
2219 /* Legacy codec/codec_dai link is a single entry in multicodec */
2220 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
2221 dai_link
->codec_dai_name
) {
2222 dai_link
->num_codecs
= 1;
2224 dai_link
->codecs
= devm_kzalloc(card
->dev
,
2225 sizeof(struct snd_soc_dai_link_component
),
2227 if (!dai_link
->codecs
)
2230 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
2231 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
2232 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
2235 if (!dai_link
->codecs
) {
2236 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
2244 * snd_soc_register_card - Register a card with the ASoC core
2246 * @card: Card to register
2249 int snd_soc_register_card(struct snd_soc_card
*card
)
2253 if (!card
->name
|| !card
->dev
)
2256 for (i
= 0; i
< card
->num_links
; i
++) {
2257 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2259 ret
= snd_soc_init_multicodec(card
, link
);
2261 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
2265 for (j
= 0; j
< link
->num_codecs
; j
++) {
2267 * Codec must be specified by 1 of name or OF node,
2268 * not both or neither.
2270 if (!!link
->codecs
[j
].name
==
2271 !!link
->codecs
[j
].of_node
) {
2272 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
2276 /* Codec DAI name must be specified */
2277 if (!link
->codecs
[j
].dai_name
) {
2278 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
2285 * Platform may be specified by either name or OF node, but
2286 * can be left unspecified, and a dummy platform will be used.
2288 if (link
->platform_name
&& link
->platform_of_node
) {
2290 "ASoC: Both platform name/of_node are set for %s\n",
2296 * CPU device may be specified by either name or OF node, but
2297 * can be left unspecified, and will be matched based on DAI
2300 if (link
->cpu_name
&& link
->cpu_of_node
) {
2302 "ASoC: Neither/both cpu name/of_node are set for %s\n",
2307 * At least one of CPU DAI name or CPU device name/node must be
2310 if (!link
->cpu_dai_name
&&
2311 !(link
->cpu_name
|| link
->cpu_of_node
)) {
2313 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
2319 dev_set_drvdata(card
->dev
, card
);
2321 snd_soc_initialize_card_lists(card
);
2323 soc_init_card_debugfs(card
);
2325 card
->rtd
= devm_kzalloc(card
->dev
,
2326 sizeof(struct snd_soc_pcm_runtime
) *
2327 (card
->num_links
+ card
->num_aux_devs
),
2329 if (card
->rtd
== NULL
)
2332 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2334 for (i
= 0; i
< card
->num_links
; i
++) {
2335 card
->rtd
[i
].card
= card
;
2336 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2337 card
->rtd
[i
].codec_dais
= devm_kzalloc(card
->dev
,
2338 sizeof(struct snd_soc_dai
*) *
2339 (card
->rtd
[i
].dai_link
->num_codecs
),
2341 if (card
->rtd
[i
].codec_dais
== NULL
)
2345 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2346 card
->rtd_aux
[i
].card
= card
;
2348 INIT_LIST_HEAD(&card
->dapm_dirty
);
2349 card
->instantiated
= 0;
2350 mutex_init(&card
->mutex
);
2351 mutex_init(&card
->dapm_mutex
);
2353 ret
= snd_soc_instantiate_card(card
);
2355 soc_cleanup_card_debugfs(card
);
2357 /* deactivate pins to sleep state */
2358 for (i
= 0; i
< card
->num_rtd
; i
++) {
2359 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2360 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2363 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2364 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2365 if (!codec_dai
->active
)
2366 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2369 if (!cpu_dai
->active
)
2370 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2375 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2378 * snd_soc_unregister_card - Unregister a card with the ASoC core
2380 * @card: Card to unregister
2383 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2385 if (card
->instantiated
) {
2386 card
->instantiated
= false;
2387 snd_soc_dapm_shutdown(card
);
2388 soc_cleanup_card_resources(card
);
2390 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
2394 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2397 * Simplify DAI link configuration by removing ".-1" from device names
2398 * and sanitizing names.
2400 static char *fmt_single_name(struct device
*dev
, int *id
)
2402 char *found
, name
[NAME_SIZE
];
2405 if (dev_name(dev
) == NULL
)
2408 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2410 /* are we a "%s.%d" name (platform and SPI components) */
2411 found
= strstr(name
, dev
->driver
->name
);
2414 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2416 /* discard ID from name if ID == -1 */
2418 found
[strlen(dev
->driver
->name
)] = '\0';
2422 /* I2C component devices are named "bus-addr" */
2423 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2424 char tmp
[NAME_SIZE
];
2426 /* create unique ID number from I2C addr and bus */
2427 *id
= ((id1
& 0xffff) << 16) + id2
;
2429 /* sanitize component name for DAI link creation */
2430 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2431 strlcpy(name
, tmp
, NAME_SIZE
);
2436 return kstrdup(name
, GFP_KERNEL
);
2440 * Simplify DAI link naming for single devices with multiple DAIs by removing
2441 * any ".-1" and using the DAI name (instead of device name).
2443 static inline char *fmt_multiple_name(struct device
*dev
,
2444 struct snd_soc_dai_driver
*dai_drv
)
2446 if (dai_drv
->name
== NULL
) {
2448 "ASoC: error - multiple DAI %s registered with no name\n",
2453 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2457 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
2459 * @component: The component for which the DAIs should be unregistered
2461 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
2463 struct snd_soc_dai
*dai
, *_dai
;
2465 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
2466 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
2468 list_del(&dai
->list
);
2475 * snd_soc_register_dais - Register a DAI with the ASoC core
2477 * @component: The component the DAIs are registered for
2478 * @dai_drv: DAI driver to use for the DAIs
2479 * @count: Number of DAIs
2480 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
2483 static int snd_soc_register_dais(struct snd_soc_component
*component
,
2484 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
2485 bool legacy_dai_naming
)
2487 struct device
*dev
= component
->dev
;
2488 struct snd_soc_dai
*dai
;
2492 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
2494 component
->dai_drv
= dai_drv
;
2495 component
->num_dai
= count
;
2497 for (i
= 0; i
< count
; i
++) {
2499 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2506 * Back in the old days when we still had component-less DAIs,
2507 * instead of having a static name, component-less DAIs would
2508 * inherit the name of the parent device so it is possible to
2509 * register multiple instances of the DAI. We still need to keep
2510 * the same naming style even though those DAIs are not
2511 * component-less anymore.
2513 if (count
== 1 && legacy_dai_naming
) {
2514 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2516 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
2518 dai
->id
= dai_drv
[i
].id
;
2522 if (dai
->name
== NULL
) {
2528 dai
->component
= component
;
2530 dai
->driver
= &dai_drv
[i
];
2531 if (!dai
->driver
->ops
)
2532 dai
->driver
->ops
= &null_dai_ops
;
2534 list_add(&dai
->list
, &component
->dai_list
);
2536 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
2542 snd_soc_unregister_dais(component
);
2547 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
2548 enum snd_soc_dapm_type type
, int subseq
)
2550 struct snd_soc_component
*component
= dapm
->component
;
2552 component
->driver
->seq_notifier(component
, type
, subseq
);
2555 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
2558 struct snd_soc_component
*component
= dapm
->component
;
2560 return component
->driver
->stream_event(component
, event
);
2563 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
2564 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
2566 struct snd_soc_dapm_context
*dapm
;
2568 component
->name
= fmt_single_name(dev
, &component
->id
);
2569 if (!component
->name
) {
2570 dev_err(dev
, "ASoC: Failed to allocate name\n");
2574 component
->dev
= dev
;
2575 component
->driver
= driver
;
2576 component
->probe
= component
->driver
->probe
;
2577 component
->remove
= component
->driver
->remove
;
2579 if (!component
->dapm_ptr
)
2580 component
->dapm_ptr
= &component
->dapm
;
2582 dapm
= component
->dapm_ptr
;
2584 dapm
->component
= component
;
2585 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
2586 dapm
->idle_bias_off
= true;
2587 if (driver
->seq_notifier
)
2588 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
2589 if (driver
->stream_event
)
2590 dapm
->stream_event
= snd_soc_component_stream_event
;
2592 component
->controls
= driver
->controls
;
2593 component
->num_controls
= driver
->num_controls
;
2594 component
->dapm_widgets
= driver
->dapm_widgets
;
2595 component
->num_dapm_widgets
= driver
->num_dapm_widgets
;
2596 component
->dapm_routes
= driver
->dapm_routes
;
2597 component
->num_dapm_routes
= driver
->num_dapm_routes
;
2599 INIT_LIST_HEAD(&component
->dai_list
);
2600 mutex_init(&component
->io_mutex
);
2605 static void snd_soc_component_setup_regmap(struct snd_soc_component
*component
)
2607 int val_bytes
= regmap_get_val_bytes(component
->regmap
);
2609 /* Errors are legitimate for non-integer byte multiples */
2611 component
->val_bytes
= val_bytes
;
2614 #ifdef CONFIG_REGMAP
2617 * snd_soc_component_init_regmap() - Initialize regmap instance for the component
2618 * @component: The component for which to initialize the regmap instance
2619 * @regmap: The regmap instance that should be used by the component
2621 * This function allows deferred assignment of the regmap instance that is
2622 * associated with the component. Only use this if the regmap instance is not
2623 * yet ready when the component is registered. The function must also be called
2624 * before the first IO attempt of the component.
2626 void snd_soc_component_init_regmap(struct snd_soc_component
*component
,
2627 struct regmap
*regmap
)
2629 component
->regmap
= regmap
;
2630 snd_soc_component_setup_regmap(component
);
2632 EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap
);
2635 * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component
2636 * @component: The component for which to de-initialize the regmap instance
2638 * Calls regmap_exit() on the regmap instance associated to the component and
2639 * removes the regmap instance from the component.
2641 * This function should only be used if snd_soc_component_init_regmap() was used
2642 * to initialize the regmap instance.
2644 void snd_soc_component_exit_regmap(struct snd_soc_component
*component
)
2646 regmap_exit(component
->regmap
);
2647 component
->regmap
= NULL
;
2649 EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap
);
2653 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
2655 if (!component
->write
&& !component
->read
) {
2656 if (!component
->regmap
)
2657 component
->regmap
= dev_get_regmap(component
->dev
, NULL
);
2658 if (component
->regmap
)
2659 snd_soc_component_setup_regmap(component
);
2662 list_add(&component
->list
, &component_list
);
2665 static void snd_soc_component_add(struct snd_soc_component
*component
)
2667 mutex_lock(&client_mutex
);
2668 snd_soc_component_add_unlocked(component
);
2669 mutex_unlock(&client_mutex
);
2672 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
2674 snd_soc_unregister_dais(component
);
2675 kfree(component
->name
);
2678 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
2680 list_del(&component
->list
);
2683 static void snd_soc_component_del(struct snd_soc_component
*component
)
2685 mutex_lock(&client_mutex
);
2686 snd_soc_component_del_unlocked(component
);
2687 mutex_unlock(&client_mutex
);
2690 int snd_soc_register_component(struct device
*dev
,
2691 const struct snd_soc_component_driver
*cmpnt_drv
,
2692 struct snd_soc_dai_driver
*dai_drv
,
2695 struct snd_soc_component
*cmpnt
;
2698 cmpnt
= kzalloc(sizeof(*cmpnt
), GFP_KERNEL
);
2700 dev_err(dev
, "ASoC: Failed to allocate memory\n");
2704 ret
= snd_soc_component_initialize(cmpnt
, cmpnt_drv
, dev
);
2708 cmpnt
->ignore_pmdown_time
= true;
2709 cmpnt
->registered_as_component
= true;
2711 ret
= snd_soc_register_dais(cmpnt
, dai_drv
, num_dai
, true);
2713 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
2717 snd_soc_component_add(cmpnt
);
2722 snd_soc_component_cleanup(cmpnt
);
2727 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
2730 * snd_soc_unregister_component - Unregister a component from the ASoC core
2733 void snd_soc_unregister_component(struct device
*dev
)
2735 struct snd_soc_component
*cmpnt
;
2737 list_for_each_entry(cmpnt
, &component_list
, list
) {
2738 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
2744 snd_soc_component_del(cmpnt
);
2745 snd_soc_component_cleanup(cmpnt
);
2748 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
2750 static int snd_soc_platform_drv_probe(struct snd_soc_component
*component
)
2752 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2754 return platform
->driver
->probe(platform
);
2757 static void snd_soc_platform_drv_remove(struct snd_soc_component
*component
)
2759 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
2761 platform
->driver
->remove(platform
);
2765 * snd_soc_add_platform - Add a platform to the ASoC core
2766 * @dev: The parent device for the platform
2767 * @platform: The platform to add
2768 * @platform_driver: The driver for the platform
2770 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
2771 const struct snd_soc_platform_driver
*platform_drv
)
2775 ret
= snd_soc_component_initialize(&platform
->component
,
2776 &platform_drv
->component_driver
, dev
);
2780 platform
->dev
= dev
;
2781 platform
->driver
= platform_drv
;
2783 if (platform_drv
->probe
)
2784 platform
->component
.probe
= snd_soc_platform_drv_probe
;
2785 if (platform_drv
->remove
)
2786 platform
->component
.remove
= snd_soc_platform_drv_remove
;
2788 #ifdef CONFIG_DEBUG_FS
2789 platform
->component
.debugfs_prefix
= "platform";
2792 mutex_lock(&client_mutex
);
2793 snd_soc_component_add_unlocked(&platform
->component
);
2794 list_add(&platform
->list
, &platform_list
);
2795 mutex_unlock(&client_mutex
);
2797 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
2798 platform
->component
.name
);
2802 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
2805 * snd_soc_register_platform - Register a platform with the ASoC core
2807 * @platform: platform to register
2809 int snd_soc_register_platform(struct device
*dev
,
2810 const struct snd_soc_platform_driver
*platform_drv
)
2812 struct snd_soc_platform
*platform
;
2815 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
2817 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
2818 if (platform
== NULL
)
2821 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
2827 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
2830 * snd_soc_remove_platform - Remove a platform from the ASoC core
2831 * @platform: the platform to remove
2833 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
2836 mutex_lock(&client_mutex
);
2837 list_del(&platform
->list
);
2838 snd_soc_component_del_unlocked(&platform
->component
);
2839 mutex_unlock(&client_mutex
);
2841 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
2842 platform
->component
.name
);
2844 snd_soc_component_cleanup(&platform
->component
);
2846 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
2848 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
2850 struct snd_soc_platform
*platform
;
2852 list_for_each_entry(platform
, &platform_list
, list
) {
2853 if (dev
== platform
->dev
)
2859 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
2862 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
2864 * @platform: platform to unregister
2866 void snd_soc_unregister_platform(struct device
*dev
)
2868 struct snd_soc_platform
*platform
;
2870 platform
= snd_soc_lookup_platform(dev
);
2874 snd_soc_remove_platform(platform
);
2877 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
2879 static u64 codec_format_map
[] = {
2880 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
2881 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
2882 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
2883 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
2884 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
2885 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
2886 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2887 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
2888 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
2889 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
2890 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
2891 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
2892 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
2893 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
2894 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
2895 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
2898 /* Fix up the DAI formats for endianness: codecs don't actually see
2899 * the endianness of the data but we're using the CPU format
2900 * definitions which do need to include endianness so we ensure that
2901 * codec DAIs always have both big and little endian variants set.
2903 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
2907 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
2908 if (stream
->formats
& codec_format_map
[i
])
2909 stream
->formats
|= codec_format_map
[i
];
2912 static int snd_soc_codec_drv_probe(struct snd_soc_component
*component
)
2914 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2916 return codec
->driver
->probe(codec
);
2919 static void snd_soc_codec_drv_remove(struct snd_soc_component
*component
)
2921 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2923 codec
->driver
->remove(codec
);
2926 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
2927 unsigned int reg
, unsigned int val
)
2929 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2931 return codec
->driver
->write(codec
, reg
, val
);
2934 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
2935 unsigned int reg
, unsigned int *val
)
2937 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
2939 *val
= codec
->driver
->read(codec
, reg
);
2944 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
2945 enum snd_soc_bias_level level
)
2947 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
2949 return codec
->driver
->set_bias_level(codec
, level
);
2953 * snd_soc_register_codec - Register a codec with the ASoC core
2955 * @codec: codec to register
2957 int snd_soc_register_codec(struct device
*dev
,
2958 const struct snd_soc_codec_driver
*codec_drv
,
2959 struct snd_soc_dai_driver
*dai_drv
,
2962 struct snd_soc_codec
*codec
;
2963 struct snd_soc_dai
*dai
;
2966 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
2968 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
2972 codec
->component
.dapm_ptr
= &codec
->dapm
;
2973 codec
->component
.codec
= codec
;
2975 ret
= snd_soc_component_initialize(&codec
->component
,
2976 &codec_drv
->component_driver
, dev
);
2980 if (codec_drv
->controls
) {
2981 codec
->component
.controls
= codec_drv
->controls
;
2982 codec
->component
.num_controls
= codec_drv
->num_controls
;
2984 if (codec_drv
->dapm_widgets
) {
2985 codec
->component
.dapm_widgets
= codec_drv
->dapm_widgets
;
2986 codec
->component
.num_dapm_widgets
= codec_drv
->num_dapm_widgets
;
2988 if (codec_drv
->dapm_routes
) {
2989 codec
->component
.dapm_routes
= codec_drv
->dapm_routes
;
2990 codec
->component
.num_dapm_routes
= codec_drv
->num_dapm_routes
;
2993 if (codec_drv
->probe
)
2994 codec
->component
.probe
= snd_soc_codec_drv_probe
;
2995 if (codec_drv
->remove
)
2996 codec
->component
.remove
= snd_soc_codec_drv_remove
;
2997 if (codec_drv
->write
)
2998 codec
->component
.write
= snd_soc_codec_drv_write
;
2999 if (codec_drv
->read
)
3000 codec
->component
.read
= snd_soc_codec_drv_read
;
3001 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3002 codec
->dapm
.idle_bias_off
= codec_drv
->idle_bias_off
;
3003 codec
->dapm
.suspend_bias_off
= codec_drv
->suspend_bias_off
;
3004 if (codec_drv
->seq_notifier
)
3005 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3006 if (codec_drv
->set_bias_level
)
3007 codec
->dapm
.set_bias_level
= snd_soc_codec_set_bias_level
;
3009 codec
->driver
= codec_drv
;
3010 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
3012 #ifdef CONFIG_DEBUG_FS
3013 codec
->component
.init_debugfs
= soc_init_codec_debugfs
;
3014 codec
->component
.debugfs_prefix
= "codec";
3017 if (codec_drv
->get_regmap
)
3018 codec
->component
.regmap
= codec_drv
->get_regmap(dev
);
3020 for (i
= 0; i
< num_dai
; i
++) {
3021 fixup_codec_formats(&dai_drv
[i
].playback
);
3022 fixup_codec_formats(&dai_drv
[i
].capture
);
3025 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
3027 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
3031 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
3034 mutex_lock(&client_mutex
);
3035 snd_soc_component_add_unlocked(&codec
->component
);
3036 list_add(&codec
->list
, &codec_list
);
3037 mutex_unlock(&client_mutex
);
3039 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
3040 codec
->component
.name
);
3044 snd_soc_component_cleanup(&codec
->component
);
3049 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3052 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3054 * @codec: codec to unregister
3056 void snd_soc_unregister_codec(struct device
*dev
)
3058 struct snd_soc_codec
*codec
;
3060 list_for_each_entry(codec
, &codec_list
, list
) {
3061 if (dev
== codec
->dev
)
3068 mutex_lock(&client_mutex
);
3069 list_del(&codec
->list
);
3070 snd_soc_component_del_unlocked(&codec
->component
);
3071 mutex_unlock(&client_mutex
);
3073 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
3074 codec
->component
.name
);
3076 snd_soc_component_cleanup(&codec
->component
);
3077 snd_soc_cache_exit(codec
);
3080 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3082 /* Retrieve a card's name from device tree */
3083 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3084 const char *propname
)
3086 struct device_node
*np
;
3090 pr_err("card->dev is not set before calling %s\n", __func__
);
3094 np
= card
->dev
->of_node
;
3096 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3098 * EINVAL means the property does not exist. This is fine providing
3099 * card->name was previously set, which is checked later in
3100 * snd_soc_register_card.
3102 if (ret
< 0 && ret
!= -EINVAL
) {
3104 "ASoC: Property '%s' could not be read: %d\n",
3111 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3113 static const struct snd_soc_dapm_widget simple_widgets
[] = {
3114 SND_SOC_DAPM_MIC("Microphone", NULL
),
3115 SND_SOC_DAPM_LINE("Line", NULL
),
3116 SND_SOC_DAPM_HP("Headphone", NULL
),
3117 SND_SOC_DAPM_SPK("Speaker", NULL
),
3120 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
3121 const char *propname
)
3123 struct device_node
*np
= card
->dev
->of_node
;
3124 struct snd_soc_dapm_widget
*widgets
;
3125 const char *template, *wname
;
3126 int i
, j
, num_widgets
, ret
;
3128 num_widgets
= of_property_count_strings(np
, propname
);
3129 if (num_widgets
< 0) {
3131 "ASoC: Property '%s' does not exist\n", propname
);
3134 if (num_widgets
& 1) {
3136 "ASoC: Property '%s' length is not even\n", propname
);
3142 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3147 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
3151 "ASoC: Could not allocate memory for widgets\n");
3155 for (i
= 0; i
< num_widgets
; i
++) {
3156 ret
= of_property_read_string_index(np
, propname
,
3160 "ASoC: Property '%s' index %d read error:%d\n",
3161 propname
, 2 * i
, ret
);
3165 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
3166 if (!strncmp(template, simple_widgets
[j
].name
,
3167 strlen(simple_widgets
[j
].name
))) {
3168 widgets
[i
] = simple_widgets
[j
];
3173 if (j
>= ARRAY_SIZE(simple_widgets
)) {
3175 "ASoC: DAPM widget '%s' is not supported\n",
3180 ret
= of_property_read_string_index(np
, propname
,
3185 "ASoC: Property '%s' index %d read error:%d\n",
3186 propname
, (2 * i
) + 1, ret
);
3190 widgets
[i
].name
= wname
;
3193 card
->dapm_widgets
= widgets
;
3194 card
->num_dapm_widgets
= num_widgets
;
3198 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
3200 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
3201 unsigned int *slots
,
3202 unsigned int *slot_width
)
3207 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
3208 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
3216 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
3217 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
3227 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
3229 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3230 const char *propname
)
3232 struct device_node
*np
= card
->dev
->of_node
;
3233 int num_routes
, old_routes
;
3234 struct snd_soc_dapm_route
*routes
;
3237 num_routes
= of_property_count_strings(np
, propname
);
3238 if (num_routes
< 0 || num_routes
& 1) {
3240 "ASoC: Property '%s' does not exist or its length is not even\n",
3246 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
3251 old_routes
= card
->num_dapm_routes
;
3252 routes
= devm_kzalloc(card
->dev
,
3253 (old_routes
+ num_routes
) * sizeof(*routes
),
3257 "ASoC: Could not allocate DAPM route table\n");
3261 memcpy(routes
, card
->dapm_routes
, old_routes
* sizeof(*routes
));
3263 for (i
= 0; i
< num_routes
; i
++) {
3264 ret
= of_property_read_string_index(np
, propname
,
3265 2 * i
, &routes
[old_routes
+ i
].sink
);
3268 "ASoC: Property '%s' index %d could not be read: %d\n",
3269 propname
, 2 * i
, ret
);
3272 ret
= of_property_read_string_index(np
, propname
,
3273 (2 * i
) + 1, &routes
[old_routes
+ i
].source
);
3276 "ASoC: Property '%s' index %d could not be read: %d\n",
3277 propname
, (2 * i
) + 1, ret
);
3282 card
->num_dapm_routes
+= num_routes
;
3283 card
->dapm_routes
= routes
;
3287 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3289 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
3291 struct device_node
**bitclkmaster
,
3292 struct device_node
**framemaster
)
3296 unsigned int format
= 0;
3302 } of_fmt_table
[] = {
3303 { "i2s", SND_SOC_DAIFMT_I2S
},
3304 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
3305 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
3306 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
3307 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
3308 { "ac97", SND_SOC_DAIFMT_AC97
},
3309 { "pdm", SND_SOC_DAIFMT_PDM
},
3310 { "msb", SND_SOC_DAIFMT_MSB
},
3311 { "lsb", SND_SOC_DAIFMT_LSB
},
3318 * check "[prefix]format = xxx"
3319 * SND_SOC_DAIFMT_FORMAT_MASK area
3321 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
3322 ret
= of_property_read_string(np
, prop
, &str
);
3324 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
3325 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
3326 format
|= of_fmt_table
[i
].val
;
3333 * check "[prefix]continuous-clock"
3334 * SND_SOC_DAIFMT_CLOCK_MASK area
3336 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
3337 if (of_get_property(np
, prop
, NULL
))
3338 format
|= SND_SOC_DAIFMT_CONT
;
3340 format
|= SND_SOC_DAIFMT_GATED
;
3343 * check "[prefix]bitclock-inversion"
3344 * check "[prefix]frame-inversion"
3345 * SND_SOC_DAIFMT_INV_MASK area
3347 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
3348 bit
= !!of_get_property(np
, prop
, NULL
);
3350 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
3351 frame
= !!of_get_property(np
, prop
, NULL
);
3353 switch ((bit
<< 4) + frame
) {
3355 format
|= SND_SOC_DAIFMT_IB_IF
;
3358 format
|= SND_SOC_DAIFMT_IB_NF
;
3361 format
|= SND_SOC_DAIFMT_NB_IF
;
3364 /* SND_SOC_DAIFMT_NB_NF is default */
3369 * check "[prefix]bitclock-master"
3370 * check "[prefix]frame-master"
3371 * SND_SOC_DAIFMT_MASTER_MASK area
3373 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
3374 bit
= !!of_get_property(np
, prop
, NULL
);
3375 if (bit
&& bitclkmaster
)
3376 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
3378 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
3379 frame
= !!of_get_property(np
, prop
, NULL
);
3380 if (frame
&& framemaster
)
3381 *framemaster
= of_parse_phandle(np
, prop
, 0);
3383 switch ((bit
<< 4) + frame
) {
3385 format
|= SND_SOC_DAIFMT_CBM_CFM
;
3388 format
|= SND_SOC_DAIFMT_CBM_CFS
;
3391 format
|= SND_SOC_DAIFMT_CBS_CFM
;
3394 format
|= SND_SOC_DAIFMT_CBS_CFS
;
3400 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
3402 static int snd_soc_get_dai_name(struct of_phandle_args
*args
,
3403 const char **dai_name
)
3405 struct snd_soc_component
*pos
;
3406 int ret
= -EPROBE_DEFER
;
3408 mutex_lock(&client_mutex
);
3409 list_for_each_entry(pos
, &component_list
, list
) {
3410 if (pos
->dev
->of_node
!= args
->np
)
3413 if (pos
->driver
->of_xlate_dai_name
) {
3414 ret
= pos
->driver
->of_xlate_dai_name(pos
,
3420 switch (args
->args_count
) {
3422 id
= 0; /* same as dai_drv[0] */
3432 if (id
< 0 || id
>= pos
->num_dai
) {
3439 *dai_name
= pos
->dai_drv
[id
].name
;
3441 *dai_name
= pos
->name
;
3446 mutex_unlock(&client_mutex
);
3450 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
3451 const char **dai_name
)
3453 struct of_phandle_args args
;
3456 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
3457 "#sound-dai-cells", 0, &args
);
3461 ret
= snd_soc_get_dai_name(&args
, dai_name
);
3463 of_node_put(args
.np
);
3467 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
3470 * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree
3472 * @of_node: Device node
3473 * @dai_link: DAI link
3475 * Builds an array of CODEC DAI components from the DAI link property
3477 * The array is set in the DAI link and the number of DAIs is set accordingly.
3478 * The device nodes in the array (of_node) must be dereferenced by the caller.
3480 * Returns 0 for success
3482 int snd_soc_of_get_dai_link_codecs(struct device
*dev
,
3483 struct device_node
*of_node
,
3484 struct snd_soc_dai_link
*dai_link
)
3486 struct of_phandle_args args
;
3487 struct snd_soc_dai_link_component
*component
;
3489 int index
, num_codecs
, ret
;
3491 /* Count the number of CODECs */
3493 num_codecs
= of_count_phandle_with_args(of_node
, name
,
3494 "#sound-dai-cells");
3495 if (num_codecs
<= 0) {
3496 if (num_codecs
== -ENOENT
)
3497 dev_err(dev
, "No 'sound-dai' property\n");
3499 dev_err(dev
, "Bad phandle in 'sound-dai'\n");
3502 component
= devm_kzalloc(dev
,
3503 sizeof *component
* num_codecs
,
3507 dai_link
->codecs
= component
;
3508 dai_link
->num_codecs
= num_codecs
;
3510 /* Parse the list */
3511 for (index
= 0, component
= dai_link
->codecs
;
3512 index
< dai_link
->num_codecs
;
3513 index
++, component
++) {
3514 ret
= of_parse_phandle_with_args(of_node
, name
,
3519 component
->of_node
= args
.np
;
3520 ret
= snd_soc_get_dai_name(&args
, &component
->dai_name
);
3526 for (index
= 0, component
= dai_link
->codecs
;
3527 index
< dai_link
->num_codecs
;
3528 index
++, component
++) {
3529 if (!component
->of_node
)
3531 of_node_put(component
->of_node
);
3532 component
->of_node
= NULL
;
3534 dai_link
->codecs
= NULL
;
3535 dai_link
->num_codecs
= 0;
3538 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs
);
3540 static int __init
snd_soc_init(void)
3542 #ifdef CONFIG_DEBUG_FS
3543 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3544 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3545 pr_warn("ASoC: Failed to create debugfs directory\n");
3546 snd_soc_debugfs_root
= NULL
;
3549 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3551 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3553 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3555 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3557 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3558 &platform_list_fops
))
3559 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3562 snd_soc_util_init();
3564 return platform_driver_register(&soc_driver
);
3566 module_init(snd_soc_init
);
3568 static void __exit
snd_soc_exit(void)
3570 snd_soc_util_exit();
3572 #ifdef CONFIG_DEBUG_FS
3573 debugfs_remove_recursive(snd_soc_debugfs_root
);
3575 platform_driver_unregister(&soc_driver
);
3577 module_exit(snd_soc_exit
);
3579 /* Module information */
3580 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3581 MODULE_DESCRIPTION("ALSA SoC Core");
3582 MODULE_LICENSE("GPL");
3583 MODULE_ALIAS("platform:soc-audio");