2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/gpio.h>
38 #include <linux/of_gpio.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/core.h>
41 #include <sound/jack.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc.h>
45 #include <sound/soc-dpcm.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry
*snd_soc_debugfs_root
;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
58 static DEFINE_MUTEX(client_mutex
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
61 static LIST_HEAD(component_list
);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time
= 5000;
69 module_param(pmdown_time
, int, 0);
70 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
72 struct snd_ac97_reset_cfg
{
74 struct pinctrl_state
*pstate_reset
;
75 struct pinctrl_state
*pstate_warm_reset
;
76 struct pinctrl_state
*pstate_run
;
82 /* returns the minimum number of bytes needed to represent
83 * a particular given value */
84 static int min_bytes_needed(unsigned long val
)
89 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
92 c
= (sizeof val
* 8) - c
;
100 /* fill buf which is 'len' bytes with a formatted
101 * string of the form 'reg: value\n' */
102 static int format_register_str(struct snd_soc_codec
*codec
,
103 unsigned int reg
, char *buf
, size_t len
)
105 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
106 int regsize
= codec
->driver
->reg_word_size
* 2;
108 char tmpbuf
[len
+ 1];
109 char regbuf
[regsize
+ 1];
111 /* since tmpbuf is allocated on the stack, warn the callers if they
112 * try to abuse this function */
115 /* +2 for ': ' and + 1 for '\n' */
116 if (wordsize
+ regsize
+ 2 + 1 != len
)
119 ret
= snd_soc_read(codec
, reg
);
121 memset(regbuf
, 'X', regsize
);
122 regbuf
[regsize
] = '\0';
124 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
127 /* prepare the buffer */
128 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
129 /* copy it back to the caller without the '\0' */
130 memcpy(buf
, tmpbuf
, len
);
135 /* codec register dump */
136 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
137 size_t count
, loff_t pos
)
140 int wordsize
, regsize
;
145 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
146 regsize
= codec
->driver
->reg_word_size
* 2;
148 len
= wordsize
+ regsize
+ 2 + 1;
150 if (!codec
->driver
->reg_cache_size
)
153 if (codec
->driver
->reg_cache_step
)
154 step
= codec
->driver
->reg_cache_step
;
156 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
157 if (!snd_soc_codec_readable_register(codec
, i
))
159 if (codec
->driver
->display_register
) {
160 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
161 PAGE_SIZE
- count
, i
);
163 /* only support larger than PAGE_SIZE bytes debugfs
164 * entries for the default case */
166 if (total
+ len
>= count
- 1)
168 format_register_str(codec
, i
, buf
+ total
, len
);
175 total
= min(total
, count
- 1);
180 static ssize_t
codec_reg_show(struct device
*dev
,
181 struct device_attribute
*attr
, char *buf
)
183 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
185 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
188 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
190 static ssize_t
pmdown_time_show(struct device
*dev
,
191 struct device_attribute
*attr
, char *buf
)
193 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
195 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
198 static ssize_t
pmdown_time_set(struct device
*dev
,
199 struct device_attribute
*attr
,
200 const char *buf
, size_t count
)
202 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
205 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
212 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
214 #ifdef CONFIG_DEBUG_FS
215 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
216 size_t count
, loff_t
*ppos
)
219 struct snd_soc_codec
*codec
= file
->private_data
;
222 if (*ppos
< 0 || !count
)
225 buf
= kmalloc(count
, GFP_KERNEL
);
229 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
231 if (copy_to_user(user_buf
, buf
, ret
)) {
242 static ssize_t
codec_reg_write_file(struct file
*file
,
243 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
248 unsigned long reg
, value
;
249 struct snd_soc_codec
*codec
= file
->private_data
;
252 buf_size
= min(count
, (sizeof(buf
)-1));
253 if (copy_from_user(buf
, user_buf
, buf_size
))
257 while (*start
== ' ')
259 reg
= simple_strtoul(start
, &start
, 16);
260 while (*start
== ' ')
262 ret
= kstrtoul(start
, 16, &value
);
266 /* Userspace has been fiddling around behind the kernel's back */
267 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
269 snd_soc_write(codec
, reg
, value
);
273 static const struct file_operations codec_reg_fops
= {
275 .read
= codec_reg_read_file
,
276 .write
= codec_reg_write_file
,
277 .llseek
= default_llseek
,
280 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
282 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
284 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
286 if (!codec
->debugfs_codec_root
) {
288 "ASoC: Failed to create codec debugfs directory\n");
292 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
294 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
297 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
298 codec
->debugfs_codec_root
,
299 codec
, &codec_reg_fops
);
300 if (!codec
->debugfs_reg
)
302 "ASoC: Failed to create codec register debugfs file\n");
304 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
307 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
309 debugfs_remove_recursive(codec
->debugfs_codec_root
);
312 static void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
314 struct dentry
*debugfs_card_root
= platform
->card
->debugfs_card_root
;
316 platform
->debugfs_platform_root
= debugfs_create_dir(platform
->name
,
318 if (!platform
->debugfs_platform_root
) {
319 dev_warn(platform
->dev
,
320 "ASoC: Failed to create platform debugfs directory\n");
324 snd_soc_dapm_debugfs_init(&platform
->dapm
,
325 platform
->debugfs_platform_root
);
328 static void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
330 debugfs_remove_recursive(platform
->debugfs_platform_root
);
333 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
334 size_t count
, loff_t
*ppos
)
336 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
337 ssize_t len
, ret
= 0;
338 struct snd_soc_codec
*codec
;
343 list_for_each_entry(codec
, &codec_list
, list
) {
344 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
348 if (ret
> PAGE_SIZE
) {
355 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
362 static const struct file_operations codec_list_fops
= {
363 .read
= codec_list_read_file
,
364 .llseek
= default_llseek
,/* read accesses f_pos */
367 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
368 size_t count
, loff_t
*ppos
)
370 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
371 ssize_t len
, ret
= 0;
372 struct snd_soc_component
*component
;
373 struct snd_soc_dai
*dai
;
378 list_for_each_entry(component
, &component_list
, list
) {
379 list_for_each_entry(dai
, &component
->dai_list
, list
) {
380 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
384 if (ret
> PAGE_SIZE
) {
391 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
398 static const struct file_operations dai_list_fops
= {
399 .read
= dai_list_read_file
,
400 .llseek
= default_llseek
,/* read accesses f_pos */
403 static ssize_t
platform_list_read_file(struct file
*file
,
404 char __user
*user_buf
,
405 size_t count
, loff_t
*ppos
)
407 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
408 ssize_t len
, ret
= 0;
409 struct snd_soc_platform
*platform
;
414 list_for_each_entry(platform
, &platform_list
, list
) {
415 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
419 if (ret
> PAGE_SIZE
) {
425 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
432 static const struct file_operations platform_list_fops
= {
433 .read
= platform_list_read_file
,
434 .llseek
= default_llseek
,/* read accesses f_pos */
437 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
439 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
440 snd_soc_debugfs_root
);
441 if (!card
->debugfs_card_root
) {
443 "ASoC: Failed to create card debugfs directory\n");
447 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
448 card
->debugfs_card_root
,
450 if (!card
->debugfs_pop_time
)
452 "ASoC: Failed to create pop time debugfs file\n");
455 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
457 debugfs_remove_recursive(card
->debugfs_card_root
);
462 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
466 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
470 static inline void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
474 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
478 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
482 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
487 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
488 const char *dai_link
, int stream
)
492 for (i
= 0; i
< card
->num_links
; i
++) {
493 if (card
->rtd
[i
].dai_link
->no_pcm
&&
494 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
495 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
497 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
500 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
502 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
503 const char *dai_link
)
507 for (i
= 0; i
< card
->num_links
; i
++) {
508 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
509 return &card
->rtd
[i
];
511 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
514 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
516 #ifdef CONFIG_SND_SOC_AC97_BUS
517 /* unregister ac97 codec */
518 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
520 if (codec
->ac97
->dev
.bus
)
521 device_unregister(&codec
->ac97
->dev
);
525 /* stop no dev release warning */
526 static void soc_ac97_device_release(struct device
*dev
){}
528 /* register ac97 codec to bus */
529 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
533 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
534 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
535 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
537 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
538 codec
->card
->snd_card
->number
, 0, codec
->name
);
539 err
= device_register(&codec
->ac97
->dev
);
541 dev_err(codec
->dev
, "ASoC: Can't register ac97 bus\n");
542 codec
->ac97
->dev
.bus
= NULL
;
549 static void codec2codec_close_delayed_work(struct work_struct
*work
)
551 /* Currently nothing to do for c2c links
552 * Since c2c links are internal nodes in the DAPM graph and
553 * don't interface with the outside world or application layer
554 * we don't have to do any special handling on close.
558 #ifdef CONFIG_PM_SLEEP
559 /* powers down audio subsystem for suspend */
560 int snd_soc_suspend(struct device
*dev
)
562 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
563 struct snd_soc_codec
*codec
;
566 /* If the initialization of this soc device failed, there is no codec
567 * associated with it. Just bail out in this case.
569 if (list_empty(&card
->codec_dev_list
))
572 /* Due to the resume being scheduled into a workqueue we could
573 * suspend before that's finished - wait for it to complete.
575 snd_power_lock(card
->snd_card
);
576 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
577 snd_power_unlock(card
->snd_card
);
579 /* we're going to block userspace touching us until resume completes */
580 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
582 /* mute any active DACs */
583 for (i
= 0; i
< card
->num_rtd
; i
++) {
584 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
585 struct snd_soc_dai_driver
*drv
= dai
->driver
;
587 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
590 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
591 drv
->ops
->digital_mute(dai
, 1);
594 /* suspend all pcms */
595 for (i
= 0; i
< card
->num_rtd
; i
++) {
596 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
599 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
602 if (card
->suspend_pre
)
603 card
->suspend_pre(card
);
605 for (i
= 0; i
< card
->num_rtd
; i
++) {
606 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
607 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
609 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
612 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
613 cpu_dai
->driver
->suspend(cpu_dai
);
614 if (platform
->driver
->suspend
&& !platform
->suspended
) {
615 platform
->driver
->suspend(cpu_dai
);
616 platform
->suspended
= 1;
620 /* close any waiting streams and save state */
621 for (i
= 0; i
< card
->num_rtd
; i
++) {
622 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
623 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
626 for (i
= 0; i
< card
->num_rtd
; i
++) {
628 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
631 snd_soc_dapm_stream_event(&card
->rtd
[i
],
632 SNDRV_PCM_STREAM_PLAYBACK
,
633 SND_SOC_DAPM_STREAM_SUSPEND
);
635 snd_soc_dapm_stream_event(&card
->rtd
[i
],
636 SNDRV_PCM_STREAM_CAPTURE
,
637 SND_SOC_DAPM_STREAM_SUSPEND
);
640 /* Recheck all analogue paths too */
641 dapm_mark_io_dirty(&card
->dapm
);
642 snd_soc_dapm_sync(&card
->dapm
);
644 /* suspend all CODECs */
645 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
646 /* If there are paths active then the CODEC will be held with
647 * bias _ON and should not be suspended. */
648 if (!codec
->suspended
&& codec
->driver
->suspend
) {
649 switch (codec
->dapm
.bias_level
) {
650 case SND_SOC_BIAS_STANDBY
:
652 * If the CODEC is capable of idle
653 * bias off then being in STANDBY
654 * means it's doing something,
655 * otherwise fall through.
657 if (codec
->dapm
.idle_bias_off
) {
659 "ASoC: idle_bias_off CODEC on over suspend\n");
662 case SND_SOC_BIAS_OFF
:
663 codec
->driver
->suspend(codec
);
664 codec
->suspended
= 1;
665 codec
->cache_sync
= 1;
666 if (codec
->using_regmap
)
667 regcache_mark_dirty(codec
->control_data
);
668 /* deactivate pins to sleep state */
669 pinctrl_pm_select_sleep_state(codec
->dev
);
673 "ASoC: CODEC is on over suspend\n");
679 for (i
= 0; i
< card
->num_rtd
; i
++) {
680 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
682 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
685 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
686 cpu_dai
->driver
->suspend(cpu_dai
);
688 /* deactivate pins to sleep state */
689 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
692 if (card
->suspend_post
)
693 card
->suspend_post(card
);
697 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
699 /* deferred resume work, so resume can complete before we finished
700 * setting our codec back up, which can be very slow on I2C
702 static void soc_resume_deferred(struct work_struct
*work
)
704 struct snd_soc_card
*card
=
705 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
706 struct snd_soc_codec
*codec
;
709 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
710 * so userspace apps are blocked from touching us
713 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
715 /* Bring us up into D2 so that DAPM starts enabling things */
716 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
718 if (card
->resume_pre
)
719 card
->resume_pre(card
);
721 /* resume AC97 DAIs */
722 for (i
= 0; i
< card
->num_rtd
; i
++) {
723 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
725 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
728 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
729 cpu_dai
->driver
->resume(cpu_dai
);
732 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
733 /* If the CODEC was idle over suspend then it will have been
734 * left with bias OFF or STANDBY and suspended so we must now
735 * resume. Otherwise the suspend was suppressed.
737 if (codec
->driver
->resume
&& codec
->suspended
) {
738 switch (codec
->dapm
.bias_level
) {
739 case SND_SOC_BIAS_STANDBY
:
740 case SND_SOC_BIAS_OFF
:
741 codec
->driver
->resume(codec
);
742 codec
->suspended
= 0;
746 "ASoC: CODEC was on over suspend\n");
752 for (i
= 0; i
< card
->num_rtd
; i
++) {
754 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
757 snd_soc_dapm_stream_event(&card
->rtd
[i
],
758 SNDRV_PCM_STREAM_PLAYBACK
,
759 SND_SOC_DAPM_STREAM_RESUME
);
761 snd_soc_dapm_stream_event(&card
->rtd
[i
],
762 SNDRV_PCM_STREAM_CAPTURE
,
763 SND_SOC_DAPM_STREAM_RESUME
);
766 /* unmute any active DACs */
767 for (i
= 0; i
< card
->num_rtd
; i
++) {
768 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
769 struct snd_soc_dai_driver
*drv
= dai
->driver
;
771 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
774 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
775 drv
->ops
->digital_mute(dai
, 0);
778 for (i
= 0; i
< card
->num_rtd
; i
++) {
779 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
780 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
782 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
785 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
786 cpu_dai
->driver
->resume(cpu_dai
);
787 if (platform
->driver
->resume
&& platform
->suspended
) {
788 platform
->driver
->resume(cpu_dai
);
789 platform
->suspended
= 0;
793 if (card
->resume_post
)
794 card
->resume_post(card
);
796 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
798 /* userspace can access us now we are back as we were before */
799 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
801 /* Recheck all analogue paths too */
802 dapm_mark_io_dirty(&card
->dapm
);
803 snd_soc_dapm_sync(&card
->dapm
);
806 /* powers up audio subsystem after a suspend */
807 int snd_soc_resume(struct device
*dev
)
809 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
810 int i
, ac97_control
= 0;
812 /* If the initialization of this soc device failed, there is no codec
813 * associated with it. Just bail out in this case.
815 if (list_empty(&card
->codec_dev_list
))
818 /* activate pins from sleep state */
819 for (i
= 0; i
< card
->num_rtd
; i
++) {
820 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
821 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
823 pinctrl_pm_select_default_state(cpu_dai
->dev
);
824 if (codec_dai
->active
)
825 pinctrl_pm_select_default_state(codec_dai
->dev
);
828 /* AC97 devices might have other drivers hanging off them so
829 * need to resume immediately. Other drivers don't have that
830 * problem and may take a substantial amount of time to resume
831 * due to I/O costs and anti-pop so handle them out of line.
833 for (i
= 0; i
< card
->num_rtd
; i
++) {
834 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
835 ac97_control
|= cpu_dai
->driver
->ac97_control
;
838 dev_dbg(dev
, "ASoC: Resuming AC97 immediately\n");
839 soc_resume_deferred(&card
->deferred_resume_work
);
841 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
842 if (!schedule_work(&card
->deferred_resume_work
))
843 dev_err(dev
, "ASoC: resume work item may be lost\n");
848 EXPORT_SYMBOL_GPL(snd_soc_resume
);
850 #define snd_soc_suspend NULL
851 #define snd_soc_resume NULL
854 static const struct snd_soc_dai_ops null_dai_ops
= {
857 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
859 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
860 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
861 struct snd_soc_component
*component
;
862 struct snd_soc_codec
*codec
;
863 struct snd_soc_platform
*platform
;
864 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
865 const char *platform_name
;
867 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
869 /* Find CPU DAI from registered DAIs*/
870 list_for_each_entry(component
, &component_list
, list
) {
871 if (dai_link
->cpu_of_node
&&
872 component
->dev
->of_node
!= dai_link
->cpu_of_node
)
874 if (dai_link
->cpu_name
&&
875 strcmp(dev_name(component
->dev
), dai_link
->cpu_name
))
877 list_for_each_entry(cpu_dai
, &component
->dai_list
, list
) {
878 if (dai_link
->cpu_dai_name
&&
879 strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
882 rtd
->cpu_dai
= cpu_dai
;
887 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
888 dai_link
->cpu_dai_name
);
889 return -EPROBE_DEFER
;
892 /* Find CODEC from registered CODECs */
893 list_for_each_entry(codec
, &codec_list
, list
) {
894 if (dai_link
->codec_of_node
) {
895 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
898 if (strcmp(codec
->name
, dai_link
->codec_name
))
905 * CODEC found, so find CODEC DAI from registered DAIs from
908 list_for_each_entry(codec_dai
, &codec
->component
.dai_list
, list
) {
909 if (!strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
910 rtd
->codec_dai
= codec_dai
;
915 if (!rtd
->codec_dai
) {
916 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
917 dai_link
->codec_dai_name
);
918 return -EPROBE_DEFER
;
923 dev_err(card
->dev
, "ASoC: CODEC %s not registered\n",
924 dai_link
->codec_name
);
925 return -EPROBE_DEFER
;
928 /* if there's no platform we match on the empty platform */
929 platform_name
= dai_link
->platform_name
;
930 if (!platform_name
&& !dai_link
->platform_of_node
)
931 platform_name
= "snd-soc-dummy";
933 /* find one from the set of registered platforms */
934 list_for_each_entry(platform
, &platform_list
, list
) {
935 if (dai_link
->platform_of_node
) {
936 if (platform
->dev
->of_node
!=
937 dai_link
->platform_of_node
)
940 if (strcmp(platform
->name
, platform_name
))
944 rtd
->platform
= platform
;
946 if (!rtd
->platform
) {
947 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
948 dai_link
->platform_name
);
949 return -EPROBE_DEFER
;
957 static int soc_remove_platform(struct snd_soc_platform
*platform
)
961 if (platform
->driver
->remove
) {
962 ret
= platform
->driver
->remove(platform
);
964 dev_err(platform
->dev
, "ASoC: failed to remove %d\n",
968 /* Make sure all DAPM widgets are freed */
969 snd_soc_dapm_free(&platform
->dapm
);
971 soc_cleanup_platform_debugfs(platform
);
972 platform
->probed
= 0;
973 list_del(&platform
->card_list
);
974 module_put(platform
->dev
->driver
->owner
);
979 static void soc_remove_codec(struct snd_soc_codec
*codec
)
983 if (codec
->driver
->remove
) {
984 err
= codec
->driver
->remove(codec
);
986 dev_err(codec
->dev
, "ASoC: failed to remove %d\n", err
);
989 /* Make sure all DAPM widgets are freed */
990 snd_soc_dapm_free(&codec
->dapm
);
992 soc_cleanup_codec_debugfs(codec
);
994 list_del(&codec
->card_list
);
995 module_put(codec
->dev
->driver
->owner
);
998 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1000 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1001 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1004 /* unregister the rtd device */
1005 if (rtd
->dev_registered
) {
1006 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
1007 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1008 device_unregister(rtd
->dev
);
1009 rtd
->dev_registered
= 0;
1012 /* remove the CODEC DAI */
1013 if (codec_dai
&& codec_dai
->probed
&&
1014 codec_dai
->driver
->remove_order
== order
) {
1015 if (codec_dai
->driver
->remove
) {
1016 err
= codec_dai
->driver
->remove(codec_dai
);
1018 dev_err(codec_dai
->dev
,
1019 "ASoC: failed to remove %s: %d\n",
1020 codec_dai
->name
, err
);
1022 codec_dai
->probed
= 0;
1023 list_del(&codec_dai
->card_list
);
1026 /* remove the cpu_dai */
1027 if (cpu_dai
&& cpu_dai
->probed
&&
1028 cpu_dai
->driver
->remove_order
== order
) {
1029 if (cpu_dai
->driver
->remove
) {
1030 err
= cpu_dai
->driver
->remove(cpu_dai
);
1032 dev_err(cpu_dai
->dev
,
1033 "ASoC: failed to remove %s: %d\n",
1034 cpu_dai
->name
, err
);
1036 cpu_dai
->probed
= 0;
1037 list_del(&cpu_dai
->card_list
);
1039 if (!cpu_dai
->codec
) {
1040 snd_soc_dapm_free(&cpu_dai
->dapm
);
1041 module_put(cpu_dai
->dev
->driver
->owner
);
1046 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1049 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1050 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1051 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1052 struct snd_soc_platform
*platform
= rtd
->platform
;
1053 struct snd_soc_codec
*codec
;
1055 /* remove the platform */
1056 if (platform
&& platform
->probed
&&
1057 platform
->driver
->remove_order
== order
) {
1058 soc_remove_platform(platform
);
1061 /* remove the CODEC-side CODEC */
1063 codec
= codec_dai
->codec
;
1064 if (codec
&& codec
->probed
&&
1065 codec
->driver
->remove_order
== order
)
1066 soc_remove_codec(codec
);
1069 /* remove any CPU-side CODEC */
1071 codec
= cpu_dai
->codec
;
1072 if (codec
&& codec
->probed
&&
1073 codec
->driver
->remove_order
== order
)
1074 soc_remove_codec(codec
);
1078 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1082 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1084 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1085 soc_remove_link_dais(card
, dai
, order
);
1088 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1090 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1091 soc_remove_link_components(card
, dai
, order
);
1097 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1098 struct snd_soc_codec
*codec
)
1102 if (card
->codec_conf
== NULL
)
1105 for (i
= 0; i
< card
->num_configs
; i
++) {
1106 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1107 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1108 codec
->name_prefix
= map
->name_prefix
;
1114 static int soc_probe_codec(struct snd_soc_card
*card
,
1115 struct snd_soc_codec
*codec
)
1118 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1119 struct snd_soc_dai
*dai
;
1122 codec
->dapm
.card
= card
;
1123 soc_set_name_prefix(card
, codec
);
1125 if (!try_module_get(codec
->dev
->driver
->owner
))
1128 soc_init_codec_debugfs(codec
);
1130 if (driver
->dapm_widgets
)
1131 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1132 driver
->num_dapm_widgets
);
1134 /* Create DAPM widgets for each DAI stream */
1135 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
1136 snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1138 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1140 if (!codec
->write
&& dev_get_regmap(codec
->dev
, NULL
)) {
1141 /* Set the default I/O up try regmap */
1142 ret
= snd_soc_codec_set_cache_io(codec
, NULL
);
1145 "Failed to set cache I/O: %d\n", ret
);
1150 if (driver
->probe
) {
1151 ret
= driver
->probe(codec
);
1154 "ASoC: failed to probe CODEC %d\n", ret
);
1157 WARN(codec
->dapm
.idle_bias_off
&&
1158 codec
->dapm
.bias_level
!= SND_SOC_BIAS_OFF
,
1159 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1163 if (driver
->controls
)
1164 snd_soc_add_codec_controls(codec
, driver
->controls
,
1165 driver
->num_controls
);
1166 if (driver
->dapm_routes
)
1167 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1168 driver
->num_dapm_routes
);
1170 /* mark codec as probed and add to card codec list */
1172 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1173 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1178 soc_cleanup_codec_debugfs(codec
);
1179 module_put(codec
->dev
->driver
->owner
);
1184 static int soc_probe_platform(struct snd_soc_card
*card
,
1185 struct snd_soc_platform
*platform
)
1188 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1189 struct snd_soc_component
*component
;
1190 struct snd_soc_dai
*dai
;
1192 platform
->card
= card
;
1193 platform
->dapm
.card
= card
;
1195 if (!try_module_get(platform
->dev
->driver
->owner
))
1198 soc_init_platform_debugfs(platform
);
1200 if (driver
->dapm_widgets
)
1201 snd_soc_dapm_new_controls(&platform
->dapm
,
1202 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1204 /* Create DAPM widgets for each DAI stream */
1205 list_for_each_entry(component
, &component_list
, list
) {
1206 if (component
->dev
!= platform
->dev
)
1208 list_for_each_entry(dai
, &component
->dai_list
, list
)
1209 snd_soc_dapm_new_dai_widgets(&platform
->dapm
, dai
);
1212 platform
->dapm
.idle_bias_off
= 1;
1214 if (driver
->probe
) {
1215 ret
= driver
->probe(platform
);
1217 dev_err(platform
->dev
,
1218 "ASoC: failed to probe platform %d\n", ret
);
1223 if (driver
->controls
)
1224 snd_soc_add_platform_controls(platform
, driver
->controls
,
1225 driver
->num_controls
);
1226 if (driver
->dapm_routes
)
1227 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1228 driver
->num_dapm_routes
);
1230 /* mark platform as probed and add to card platform list */
1231 platform
->probed
= 1;
1232 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1233 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1238 soc_cleanup_platform_debugfs(platform
);
1239 module_put(platform
->dev
->driver
->owner
);
1244 static void rtd_release(struct device
*dev
)
1249 static int soc_post_component_init(struct snd_soc_card
*card
,
1250 struct snd_soc_codec
*codec
,
1251 int num
, int dailess
)
1253 struct snd_soc_dai_link
*dai_link
= NULL
;
1254 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1255 struct snd_soc_pcm_runtime
*rtd
;
1260 dai_link
= &card
->dai_link
[num
];
1261 rtd
= &card
->rtd
[num
];
1262 name
= dai_link
->name
;
1264 aux_dev
= &card
->aux_dev
[num
];
1265 rtd
= &card
->rtd_aux
[num
];
1266 name
= aux_dev
->name
;
1270 /* do machine specific initialization */
1271 if (!dailess
&& dai_link
->init
)
1272 ret
= dai_link
->init(rtd
);
1273 else if (dailess
&& aux_dev
->init
)
1274 ret
= aux_dev
->init(&codec
->dapm
);
1276 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n", name
, ret
);
1280 /* register the rtd device */
1283 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1286 device_initialize(rtd
->dev
);
1287 rtd
->dev
->parent
= card
->dev
;
1288 rtd
->dev
->release
= rtd_release
;
1289 rtd
->dev
->init_name
= name
;
1290 dev_set_drvdata(rtd
->dev
, rtd
);
1291 mutex_init(&rtd
->pcm_mutex
);
1292 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1293 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1294 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1295 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1296 ret
= device_add(rtd
->dev
);
1298 /* calling put_device() here to free the rtd->dev */
1299 put_device(rtd
->dev
);
1301 "ASoC: failed to register runtime device: %d\n", ret
);
1304 rtd
->dev_registered
= 1;
1306 /* add DAPM sysfs entries for this codec */
1307 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1310 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret
);
1312 /* add codec sysfs entries */
1313 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1316 "ASoC: failed to add codec sysfs files: %d\n", ret
);
1318 #ifdef CONFIG_DEBUG_FS
1319 /* add DPCM sysfs entries */
1320 if (!dailess
&& !dai_link
->dynamic
)
1323 ret
= soc_dpcm_debugfs_add(rtd
);
1325 dev_err(rtd
->dev
, "ASoC: failed to add dpcm sysfs entries: %d\n", ret
);
1332 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1335 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1336 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1337 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1338 struct snd_soc_platform
*platform
= rtd
->platform
;
1341 /* probe the CPU-side component, if it is a CODEC */
1342 if (cpu_dai
->codec
&&
1343 !cpu_dai
->codec
->probed
&&
1344 cpu_dai
->codec
->driver
->probe_order
== order
) {
1345 ret
= soc_probe_codec(card
, cpu_dai
->codec
);
1350 /* probe the CODEC-side component */
1351 if (!codec_dai
->codec
->probed
&&
1352 codec_dai
->codec
->driver
->probe_order
== order
) {
1353 ret
= soc_probe_codec(card
, codec_dai
->codec
);
1358 /* probe the platform */
1359 if (!platform
->probed
&&
1360 platform
->driver
->probe_order
== order
) {
1361 ret
= soc_probe_platform(card
, platform
);
1369 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1371 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1372 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1373 struct snd_soc_codec
*codec
= rtd
->codec
;
1374 struct snd_soc_platform
*platform
= rtd
->platform
;
1375 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1376 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1377 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1380 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1381 card
->name
, num
, order
);
1383 /* config components */
1384 cpu_dai
->platform
= platform
;
1385 codec_dai
->card
= card
;
1386 cpu_dai
->card
= card
;
1388 /* set default power off timeout */
1389 rtd
->pmdown_time
= pmdown_time
;
1391 /* probe the cpu_dai */
1392 if (!cpu_dai
->probed
&&
1393 cpu_dai
->driver
->probe_order
== order
) {
1394 if (!cpu_dai
->codec
) {
1395 cpu_dai
->dapm
.card
= card
;
1396 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1399 list_add(&cpu_dai
->dapm
.list
, &card
->dapm_list
);
1402 if (cpu_dai
->driver
->probe
) {
1403 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1405 dev_err(cpu_dai
->dev
,
1406 "ASoC: failed to probe CPU DAI %s: %d\n",
1407 cpu_dai
->name
, ret
);
1408 module_put(cpu_dai
->dev
->driver
->owner
);
1412 cpu_dai
->probed
= 1;
1413 /* mark cpu_dai as probed and add to card dai list */
1414 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1417 /* probe the CODEC DAI */
1418 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1419 if (codec_dai
->driver
->probe
) {
1420 ret
= codec_dai
->driver
->probe(codec_dai
);
1422 dev_err(codec_dai
->dev
,
1423 "ASoC: failed to probe CODEC DAI %s: %d\n",
1424 codec_dai
->name
, ret
);
1429 /* mark codec_dai as probed and add to card dai list */
1430 codec_dai
->probed
= 1;
1431 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1434 /* complete DAI probe during last probe */
1435 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1438 ret
= soc_post_component_init(card
, codec
, num
, 0);
1442 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1444 dev_warn(rtd
->dev
, "ASoC: failed to add pmdown_time sysfs: %d\n",
1447 if (cpu_dai
->driver
->compress_dai
) {
1448 /*create compress_device"*/
1449 ret
= soc_new_compress(rtd
, num
);
1451 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1452 dai_link
->stream_name
);
1457 if (!dai_link
->params
) {
1458 /* create the pcm */
1459 ret
= soc_new_pcm(rtd
, num
);
1461 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1462 dai_link
->stream_name
, ret
);
1466 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1467 codec2codec_close_delayed_work
);
1469 /* link the DAI widgets */
1470 play_w
= codec_dai
->playback_widget
;
1471 capture_w
= cpu_dai
->capture_widget
;
1472 if (play_w
&& capture_w
) {
1473 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1476 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1477 play_w
->name
, capture_w
->name
, ret
);
1482 play_w
= cpu_dai
->playback_widget
;
1483 capture_w
= codec_dai
->capture_widget
;
1484 if (play_w
&& capture_w
) {
1485 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1488 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1489 play_w
->name
, capture_w
->name
, ret
);
1496 /* add platform data for AC97 devices */
1497 if (rtd
->codec_dai
->driver
->ac97_control
)
1498 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1503 #ifdef CONFIG_SND_SOC_AC97_BUS
1504 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1508 /* Only instantiate AC97 if not already done by the adaptor
1509 * for the generic AC97 subsystem.
1511 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1513 * It is possible that the AC97 device is already registered to
1514 * the device subsystem. This happens when the device is created
1515 * via snd_ac97_mixer(). Currently only SoC codec that does so
1516 * is the generic AC97 glue but others migh emerge.
1518 * In those cases we don't try to register the device again.
1520 if (!rtd
->codec
->ac97_created
)
1523 ret
= soc_ac97_dev_register(rtd
->codec
);
1525 dev_err(rtd
->codec
->dev
,
1526 "ASoC: AC97 device register failed: %d\n", ret
);
1530 rtd
->codec
->ac97_registered
= 1;
1535 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1537 if (codec
->ac97_registered
) {
1538 soc_ac97_dev_unregister(codec
);
1539 codec
->ac97_registered
= 0;
1544 static int soc_check_aux_dev(struct snd_soc_card
*card
, int num
)
1546 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1547 struct snd_soc_codec
*codec
;
1549 /* find CODEC from registered CODECs*/
1550 list_for_each_entry(codec
, &codec_list
, list
) {
1551 if (!strcmp(codec
->name
, aux_dev
->codec_name
))
1555 dev_err(card
->dev
, "ASoC: %s not registered\n", aux_dev
->codec_name
);
1557 return -EPROBE_DEFER
;
1560 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1562 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1563 struct snd_soc_codec
*codec
;
1566 /* find CODEC from registered CODECs*/
1567 list_for_each_entry(codec
, &codec_list
, list
) {
1568 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1569 if (codec
->probed
) {
1571 "ASoC: codec already probed");
1578 /* codec not found */
1579 dev_err(card
->dev
, "ASoC: codec %s not found", aux_dev
->codec_name
);
1580 return -EPROBE_DEFER
;
1583 ret
= soc_probe_codec(card
, codec
);
1587 ret
= soc_post_component_init(card
, codec
, num
, 1);
1593 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1595 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1596 struct snd_soc_codec
*codec
= rtd
->codec
;
1598 /* unregister the rtd device */
1599 if (rtd
->dev_registered
) {
1600 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1601 device_unregister(rtd
->dev
);
1602 rtd
->dev_registered
= 0;
1605 if (codec
&& codec
->probed
)
1606 soc_remove_codec(codec
);
1609 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1613 if (codec
->cache_init
)
1616 ret
= snd_soc_cache_init(codec
);
1619 "ASoC: Failed to set cache compression type: %d\n",
1623 codec
->cache_init
= 1;
1627 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1629 struct snd_soc_codec
*codec
;
1630 struct snd_soc_dai_link
*dai_link
;
1631 int ret
, i
, order
, dai_fmt
;
1633 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1636 for (i
= 0; i
< card
->num_links
; i
++) {
1637 ret
= soc_bind_dai_link(card
, i
);
1642 /* check aux_devs too */
1643 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1644 ret
= soc_check_aux_dev(card
, i
);
1649 /* initialize the register cache for each available codec */
1650 list_for_each_entry(codec
, &codec_list
, list
) {
1651 if (codec
->cache_init
)
1653 ret
= snd_soc_init_codec_cache(codec
);
1658 /* card bind complete so register a sound card */
1659 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1660 card
->owner
, 0, &card
->snd_card
);
1663 "ASoC: can't create sound card for card %s: %d\n",
1668 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1669 card
->dapm
.dev
= card
->dev
;
1670 card
->dapm
.card
= card
;
1671 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1673 #ifdef CONFIG_DEBUG_FS
1674 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1677 #ifdef CONFIG_PM_SLEEP
1678 /* deferred resume work */
1679 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1682 if (card
->dapm_widgets
)
1683 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1684 card
->num_dapm_widgets
);
1686 /* initialise the sound card only once */
1688 ret
= card
->probe(card
);
1690 goto card_probe_error
;
1693 /* probe all components used by DAI links on this card */
1694 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1696 for (i
= 0; i
< card
->num_links
; i
++) {
1697 ret
= soc_probe_link_components(card
, i
, order
);
1700 "ASoC: failed to instantiate card %d\n",
1707 /* probe all DAI links on this card */
1708 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1710 for (i
= 0; i
< card
->num_links
; i
++) {
1711 ret
= soc_probe_link_dais(card
, i
, order
);
1714 "ASoC: failed to instantiate card %d\n",
1721 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1722 ret
= soc_probe_aux_dev(card
, i
);
1725 "ASoC: failed to add auxiliary devices %d\n",
1727 goto probe_aux_dev_err
;
1731 snd_soc_dapm_link_dai_widgets(card
);
1732 snd_soc_dapm_connect_dai_link_widgets(card
);
1735 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1737 if (card
->dapm_routes
)
1738 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1739 card
->num_dapm_routes
);
1741 for (i
= 0; i
< card
->num_links
; i
++) {
1742 dai_link
= &card
->dai_link
[i
];
1743 dai_fmt
= dai_link
->dai_fmt
;
1746 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1748 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1749 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1750 "ASoC: Failed to set DAI format: %d\n",
1754 /* If this is a regular CPU link there will be a platform */
1756 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1757 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1759 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1760 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1761 "ASoC: Failed to set DAI format: %d\n",
1763 } else if (dai_fmt
) {
1764 /* Flip the polarity for the "CPU" end */
1765 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1766 switch (dai_link
->dai_fmt
&
1767 SND_SOC_DAIFMT_MASTER_MASK
) {
1768 case SND_SOC_DAIFMT_CBM_CFM
:
1769 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1771 case SND_SOC_DAIFMT_CBM_CFS
:
1772 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1774 case SND_SOC_DAIFMT_CBS_CFM
:
1775 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1777 case SND_SOC_DAIFMT_CBS_CFS
:
1778 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1782 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1784 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1785 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1786 "ASoC: Failed to set DAI format: %d\n",
1791 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1793 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1794 "%s", card
->long_name
? card
->long_name
: card
->name
);
1795 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1796 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1797 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1798 switch (card
->snd_card
->driver
[i
]) {
1804 if (!isalnum(card
->snd_card
->driver
[i
]))
1805 card
->snd_card
->driver
[i
] = '_';
1810 if (card
->late_probe
) {
1811 ret
= card
->late_probe(card
);
1813 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1815 goto probe_aux_dev_err
;
1819 if (card
->fully_routed
)
1820 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1821 snd_soc_dapm_auto_nc_codec_pins(codec
);
1823 snd_soc_dapm_new_widgets(card
);
1825 ret
= snd_card_register(card
->snd_card
);
1827 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1829 goto probe_aux_dev_err
;
1832 #ifdef CONFIG_SND_SOC_AC97_BUS
1833 /* register any AC97 codecs */
1834 for (i
= 0; i
< card
->num_rtd
; i
++) {
1835 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1838 "ASoC: failed to register AC97: %d\n", ret
);
1840 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1841 goto probe_aux_dev_err
;
1846 card
->instantiated
= 1;
1847 snd_soc_dapm_sync(&card
->dapm
);
1848 mutex_unlock(&card
->mutex
);
1853 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1854 soc_remove_aux_dev(card
, i
);
1857 soc_remove_dai_links(card
);
1863 snd_card_free(card
->snd_card
);
1866 mutex_unlock(&card
->mutex
);
1871 /* probes a new socdev */
1872 static int soc_probe(struct platform_device
*pdev
)
1874 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1877 * no card, so machine driver should be registering card
1878 * we should not be here in that case so ret error
1883 dev_warn(&pdev
->dev
,
1884 "ASoC: machine %s should use snd_soc_register_card()\n",
1887 /* Bodge while we unpick instantiation */
1888 card
->dev
= &pdev
->dev
;
1890 return snd_soc_register_card(card
);
1893 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1897 /* make sure any delayed work runs */
1898 for (i
= 0; i
< card
->num_rtd
; i
++) {
1899 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1900 flush_delayed_work(&rtd
->delayed_work
);
1903 /* remove auxiliary devices */
1904 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1905 soc_remove_aux_dev(card
, i
);
1907 /* remove and free each DAI */
1908 soc_remove_dai_links(card
);
1910 soc_cleanup_card_debugfs(card
);
1912 /* remove the card */
1916 snd_soc_dapm_free(&card
->dapm
);
1918 snd_card_free(card
->snd_card
);
1923 /* removes a socdev */
1924 static int soc_remove(struct platform_device
*pdev
)
1926 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1928 snd_soc_unregister_card(card
);
1932 int snd_soc_poweroff(struct device
*dev
)
1934 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1937 if (!card
->instantiated
)
1940 /* Flush out pmdown_time work - we actually do want to run it
1941 * now, we're shutting down so no imminent restart. */
1942 for (i
= 0; i
< card
->num_rtd
; i
++) {
1943 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1944 flush_delayed_work(&rtd
->delayed_work
);
1947 snd_soc_dapm_shutdown(card
);
1949 /* deactivate pins to sleep state */
1950 for (i
= 0; i
< card
->num_rtd
; i
++) {
1951 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1952 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
1953 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
1954 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
1959 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1961 const struct dev_pm_ops snd_soc_pm_ops
= {
1962 .suspend
= snd_soc_suspend
,
1963 .resume
= snd_soc_resume
,
1964 .freeze
= snd_soc_suspend
,
1965 .thaw
= snd_soc_resume
,
1966 .poweroff
= snd_soc_poweroff
,
1967 .restore
= snd_soc_resume
,
1969 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1971 /* ASoC platform driver */
1972 static struct platform_driver soc_driver
= {
1974 .name
= "soc-audio",
1975 .owner
= THIS_MODULE
,
1976 .pm
= &snd_soc_pm_ops
,
1979 .remove
= soc_remove
,
1983 * snd_soc_codec_volatile_register: Report if a register is volatile.
1985 * @codec: CODEC to query.
1986 * @reg: Register to query.
1988 * Boolean function indiciating if a CODEC register is volatile.
1990 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1993 if (codec
->volatile_register
)
1994 return codec
->volatile_register(codec
, reg
);
1998 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
2001 * snd_soc_codec_readable_register: Report if a register is readable.
2003 * @codec: CODEC to query.
2004 * @reg: Register to query.
2006 * Boolean function indicating if a CODEC register is readable.
2008 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
2011 if (codec
->readable_register
)
2012 return codec
->readable_register(codec
, reg
);
2016 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
2019 * snd_soc_codec_writable_register: Report if a register is writable.
2021 * @codec: CODEC to query.
2022 * @reg: Register to query.
2024 * Boolean function indicating if a CODEC register is writable.
2026 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
2029 if (codec
->writable_register
)
2030 return codec
->writable_register(codec
, reg
);
2034 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
2036 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
2041 if (!platform
->driver
->read
) {
2042 dev_err(platform
->dev
, "ASoC: platform has no read back\n");
2046 ret
= platform
->driver
->read(platform
, reg
);
2047 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
2048 trace_snd_soc_preg_read(platform
, reg
, ret
);
2052 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
2054 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
2055 unsigned int reg
, unsigned int val
)
2057 if (!platform
->driver
->write
) {
2058 dev_err(platform
->dev
, "ASoC: platform has no write back\n");
2062 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
2063 trace_snd_soc_preg_write(platform
, reg
, val
);
2064 return platform
->driver
->write(platform
, reg
, val
);
2066 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
2069 * snd_soc_new_ac97_codec - initailise AC97 device
2070 * @codec: audio codec
2071 * @ops: AC97 bus operations
2072 * @num: AC97 codec number
2074 * Initialises AC97 codec resources for use by ad-hoc devices only.
2076 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2077 struct snd_ac97_bus_ops
*ops
, int num
)
2079 mutex_lock(&codec
->mutex
);
2081 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2082 if (codec
->ac97
== NULL
) {
2083 mutex_unlock(&codec
->mutex
);
2087 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2088 if (codec
->ac97
->bus
== NULL
) {
2091 mutex_unlock(&codec
->mutex
);
2095 codec
->ac97
->bus
->ops
= ops
;
2096 codec
->ac97
->num
= num
;
2099 * Mark the AC97 device to be created by us. This way we ensure that the
2100 * device will be registered with the device subsystem later on.
2102 codec
->ac97_created
= 1;
2104 mutex_unlock(&codec
->mutex
);
2107 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2109 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg
;
2111 static void snd_soc_ac97_warm_reset(struct snd_ac97
*ac97
)
2113 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2115 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_warm_reset
);
2117 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 1);
2121 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2123 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2127 static void snd_soc_ac97_reset(struct snd_ac97
*ac97
)
2129 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2131 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_reset
);
2133 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2134 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sdata
, 0);
2135 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 0);
2139 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 1);
2141 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2145 static int snd_soc_ac97_parse_pinctl(struct device
*dev
,
2146 struct snd_ac97_reset_cfg
*cfg
)
2149 struct pinctrl_state
*state
;
2153 p
= devm_pinctrl_get(dev
);
2155 dev_err(dev
, "Failed to get pinctrl\n");
2160 state
= pinctrl_lookup_state(p
, "ac97-reset");
2161 if (IS_ERR(state
)) {
2162 dev_err(dev
, "Can't find pinctrl state ac97-reset\n");
2163 return PTR_RET(state
);
2165 cfg
->pstate_reset
= state
;
2167 state
= pinctrl_lookup_state(p
, "ac97-warm-reset");
2168 if (IS_ERR(state
)) {
2169 dev_err(dev
, "Can't find pinctrl state ac97-warm-reset\n");
2170 return PTR_RET(state
);
2172 cfg
->pstate_warm_reset
= state
;
2174 state
= pinctrl_lookup_state(p
, "ac97-running");
2175 if (IS_ERR(state
)) {
2176 dev_err(dev
, "Can't find pinctrl state ac97-running\n");
2177 return PTR_RET(state
);
2179 cfg
->pstate_run
= state
;
2181 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 0);
2183 dev_err(dev
, "Can't find ac97-sync gpio\n");
2186 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sync");
2188 dev_err(dev
, "Failed requesting ac97-sync gpio\n");
2191 cfg
->gpio_sync
= gpio
;
2193 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 1);
2195 dev_err(dev
, "Can't find ac97-sdata gpio %d\n", gpio
);
2198 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sdata");
2200 dev_err(dev
, "Failed requesting ac97-sdata gpio\n");
2203 cfg
->gpio_sdata
= gpio
;
2205 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 2);
2207 dev_err(dev
, "Can't find ac97-reset gpio\n");
2210 ret
= devm_gpio_request(dev
, gpio
, "AC97 link reset");
2212 dev_err(dev
, "Failed requesting ac97-reset gpio\n");
2215 cfg
->gpio_reset
= gpio
;
2220 struct snd_ac97_bus_ops
*soc_ac97_ops
;
2221 EXPORT_SYMBOL_GPL(soc_ac97_ops
);
2223 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops
*ops
)
2225 if (ops
== soc_ac97_ops
)
2228 if (soc_ac97_ops
&& ops
)
2235 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops
);
2238 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2240 * This function sets the reset and warm_reset properties of ops and parses
2241 * the device node of pdev to get pinctrl states and gpio numbers to use.
2243 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops
*ops
,
2244 struct platform_device
*pdev
)
2246 struct device
*dev
= &pdev
->dev
;
2247 struct snd_ac97_reset_cfg cfg
;
2250 ret
= snd_soc_ac97_parse_pinctl(dev
, &cfg
);
2254 ret
= snd_soc_set_ac97_ops(ops
);
2258 ops
->warm_reset
= snd_soc_ac97_warm_reset
;
2259 ops
->reset
= snd_soc_ac97_reset
;
2261 snd_ac97_rst_cfg
= cfg
;
2264 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset
);
2267 * snd_soc_free_ac97_codec - free AC97 codec device
2268 * @codec: audio codec
2270 * Frees AC97 codec device resources.
2272 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2274 mutex_lock(&codec
->mutex
);
2275 #ifdef CONFIG_SND_SOC_AC97_BUS
2276 soc_unregister_ac97_dai_link(codec
);
2278 kfree(codec
->ac97
->bus
);
2281 codec
->ac97_created
= 0;
2282 mutex_unlock(&codec
->mutex
);
2284 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2286 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2290 ret
= codec
->read(codec
, reg
);
2291 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2292 trace_snd_soc_reg_read(codec
, reg
, ret
);
2296 EXPORT_SYMBOL_GPL(snd_soc_read
);
2298 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2299 unsigned int reg
, unsigned int val
)
2301 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2302 trace_snd_soc_reg_write(codec
, reg
, val
);
2303 return codec
->write(codec
, reg
, val
);
2305 EXPORT_SYMBOL_GPL(snd_soc_write
);
2308 * snd_soc_update_bits - update codec register bits
2309 * @codec: audio codec
2310 * @reg: codec register
2311 * @mask: register mask
2314 * Writes new register value.
2316 * Returns 1 for change, 0 for no change, or negative error code.
2318 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2319 unsigned int mask
, unsigned int value
)
2322 unsigned int old
, new;
2325 if (codec
->using_regmap
) {
2326 ret
= regmap_update_bits_check(codec
->control_data
, reg
,
2327 mask
, value
, &change
);
2329 ret
= snd_soc_read(codec
, reg
);
2334 new = (old
& ~mask
) | (value
& mask
);
2335 change
= old
!= new;
2337 ret
= snd_soc_write(codec
, reg
, new);
2345 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2348 * snd_soc_update_bits_locked - update codec register bits
2349 * @codec: audio codec
2350 * @reg: codec register
2351 * @mask: register mask
2354 * Writes new register value, and takes the codec mutex.
2356 * Returns 1 for change else 0.
2358 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2359 unsigned short reg
, unsigned int mask
,
2364 mutex_lock(&codec
->mutex
);
2365 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2366 mutex_unlock(&codec
->mutex
);
2370 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2373 * snd_soc_test_bits - test register for change
2374 * @codec: audio codec
2375 * @reg: codec register
2376 * @mask: register mask
2379 * Tests a register with a new value and checks if the new value is
2380 * different from the old value.
2382 * Returns 1 for change else 0.
2384 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2385 unsigned int mask
, unsigned int value
)
2388 unsigned int old
, new;
2390 old
= snd_soc_read(codec
, reg
);
2391 new = (old
& ~mask
) | value
;
2392 change
= old
!= new;
2396 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2399 * snd_soc_cnew - create new control
2400 * @_template: control template
2401 * @data: control private data
2402 * @long_name: control long name
2403 * @prefix: control name prefix
2405 * Create a new mixer control from a template control.
2407 * Returns 0 for success, else error.
2409 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2410 void *data
, const char *long_name
,
2413 struct snd_kcontrol_new
template;
2414 struct snd_kcontrol
*kcontrol
;
2417 memcpy(&template, _template
, sizeof(template));
2421 long_name
= template.name
;
2424 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2428 template.name
= name
;
2430 template.name
= long_name
;
2433 kcontrol
= snd_ctl_new1(&template, data
);
2439 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2441 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2442 const struct snd_kcontrol_new
*controls
, int num_controls
,
2443 const char *prefix
, void *data
)
2447 for (i
= 0; i
< num_controls
; i
++) {
2448 const struct snd_kcontrol_new
*control
= &controls
[i
];
2449 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2450 control
->name
, prefix
));
2452 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2453 control
->name
, err
);
2461 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2464 struct snd_card
*card
= soc_card
->snd_card
;
2465 struct snd_kcontrol
*kctl
;
2467 if (unlikely(!name
))
2470 list_for_each_entry(kctl
, &card
->controls
, list
)
2471 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2475 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2478 * snd_soc_add_codec_controls - add an array of controls to a codec.
2479 * Convenience function to add a list of controls. Many codecs were
2480 * duplicating this code.
2482 * @codec: codec to add controls to
2483 * @controls: array of controls to add
2484 * @num_controls: number of elements in the array
2486 * Return 0 for success, else error.
2488 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2489 const struct snd_kcontrol_new
*controls
, int num_controls
)
2491 struct snd_card
*card
= codec
->card
->snd_card
;
2493 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2494 codec
->name_prefix
, codec
);
2496 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2499 * snd_soc_add_platform_controls - add an array of controls to a platform.
2500 * Convenience function to add a list of controls.
2502 * @platform: platform to add controls to
2503 * @controls: array of controls to add
2504 * @num_controls: number of elements in the array
2506 * Return 0 for success, else error.
2508 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2509 const struct snd_kcontrol_new
*controls
, int num_controls
)
2511 struct snd_card
*card
= platform
->card
->snd_card
;
2513 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2516 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2519 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2520 * Convenience function to add a list of controls.
2522 * @soc_card: SoC card to add controls to
2523 * @controls: array of controls to add
2524 * @num_controls: number of elements in the array
2526 * Return 0 for success, else error.
2528 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2529 const struct snd_kcontrol_new
*controls
, int num_controls
)
2531 struct snd_card
*card
= soc_card
->snd_card
;
2533 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2536 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2539 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2540 * Convienience function to add a list of controls.
2542 * @dai: DAI to add controls to
2543 * @controls: array of controls to add
2544 * @num_controls: number of elements in the array
2546 * Return 0 for success, else error.
2548 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2549 const struct snd_kcontrol_new
*controls
, int num_controls
)
2551 struct snd_card
*card
= dai
->card
->snd_card
;
2553 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2556 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2559 * snd_soc_info_enum_double - enumerated double mixer info callback
2560 * @kcontrol: mixer control
2561 * @uinfo: control element information
2563 * Callback to provide information about a double enumerated
2566 * Returns 0 for success.
2568 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2569 struct snd_ctl_elem_info
*uinfo
)
2571 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2573 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2574 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2575 uinfo
->value
.enumerated
.items
= e
->items
;
2577 if (uinfo
->value
.enumerated
.item
>= e
->items
)
2578 uinfo
->value
.enumerated
.item
= e
->items
- 1;
2579 strlcpy(uinfo
->value
.enumerated
.name
,
2580 e
->texts
[uinfo
->value
.enumerated
.item
],
2581 sizeof(uinfo
->value
.enumerated
.name
));
2584 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2587 * snd_soc_get_enum_double - enumerated double mixer get callback
2588 * @kcontrol: mixer control
2589 * @ucontrol: control element information
2591 * Callback to get the value of a double enumerated mixer.
2593 * Returns 0 for success.
2595 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2596 struct snd_ctl_elem_value
*ucontrol
)
2598 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2599 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2600 unsigned int val
, item
;
2601 unsigned int reg_val
;
2603 reg_val
= snd_soc_read(codec
, e
->reg
);
2604 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2605 item
= snd_soc_enum_val_to_item(e
, val
);
2606 ucontrol
->value
.enumerated
.item
[0] = item
;
2607 if (e
->shift_l
!= e
->shift_r
) {
2608 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2609 item
= snd_soc_enum_val_to_item(e
, val
);
2610 ucontrol
->value
.enumerated
.item
[1] = item
;
2615 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2618 * snd_soc_put_enum_double - enumerated double mixer put callback
2619 * @kcontrol: mixer control
2620 * @ucontrol: control element information
2622 * Callback to set the value of a double enumerated mixer.
2624 * Returns 0 for success.
2626 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2627 struct snd_ctl_elem_value
*ucontrol
)
2629 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2630 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2631 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
2635 if (item
[0] >= e
->items
)
2637 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
2638 mask
= e
->mask
<< e
->shift_l
;
2639 if (e
->shift_l
!= e
->shift_r
) {
2640 if (item
[1] >= e
->items
)
2642 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_r
;
2643 mask
|= e
->mask
<< e
->shift_r
;
2646 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2648 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2651 * snd_soc_read_signed - Read a codec register and interprete as signed value
2653 * @reg: Register to read
2654 * @mask: Mask to use after shifting the register value
2655 * @shift: Right shift of register value
2656 * @sign_bit: Bit that describes if a number is negative or not.
2658 * This functions reads a codec register. The register value is shifted right
2659 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2660 * the given registervalue into a signed integer if sign_bit is non-zero.
2662 * Returns the register value as signed int.
2664 static int snd_soc_read_signed(struct snd_soc_codec
*codec
, unsigned int reg
,
2665 unsigned int mask
, unsigned int shift
, unsigned int sign_bit
)
2670 val
= (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2675 /* non-negative number */
2676 if (!(val
& BIT(sign_bit
)))
2682 * The register most probably does not contain a full-sized int.
2683 * Instead we have an arbitrary number of bits in a signed
2684 * representation which has to be translated into a full-sized int.
2685 * This is done by filling up all bits above the sign-bit.
2687 ret
|= ~((int)(BIT(sign_bit
) - 1));
2693 * snd_soc_info_volsw - single mixer info callback
2694 * @kcontrol: mixer control
2695 * @uinfo: control element information
2697 * Callback to provide information about a single mixer control, or a double
2698 * mixer control that spans 2 registers.
2700 * Returns 0 for success.
2702 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2703 struct snd_ctl_elem_info
*uinfo
)
2705 struct soc_mixer_control
*mc
=
2706 (struct soc_mixer_control
*)kcontrol
->private_value
;
2709 if (!mc
->platform_max
)
2710 mc
->platform_max
= mc
->max
;
2711 platform_max
= mc
->platform_max
;
2713 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2714 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2716 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2718 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2719 uinfo
->value
.integer
.min
= 0;
2720 uinfo
->value
.integer
.max
= platform_max
- mc
->min
;
2723 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2726 * snd_soc_get_volsw - single mixer get callback
2727 * @kcontrol: mixer control
2728 * @ucontrol: control element information
2730 * Callback to get the value of a single mixer control, or a double mixer
2731 * control that spans 2 registers.
2733 * Returns 0 for success.
2735 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2736 struct snd_ctl_elem_value
*ucontrol
)
2738 struct soc_mixer_control
*mc
=
2739 (struct soc_mixer_control
*)kcontrol
->private_value
;
2740 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2741 unsigned int reg
= mc
->reg
;
2742 unsigned int reg2
= mc
->rreg
;
2743 unsigned int shift
= mc
->shift
;
2744 unsigned int rshift
= mc
->rshift
;
2747 int sign_bit
= mc
->sign_bit
;
2748 unsigned int mask
= (1 << fls(max
)) - 1;
2749 unsigned int invert
= mc
->invert
;
2752 mask
= BIT(sign_bit
+ 1) - 1;
2754 ucontrol
->value
.integer
.value
[0] = snd_soc_read_signed(codec
, reg
, mask
,
2755 shift
, sign_bit
) - min
;
2757 ucontrol
->value
.integer
.value
[0] =
2758 max
- ucontrol
->value
.integer
.value
[0];
2760 if (snd_soc_volsw_is_stereo(mc
)) {
2762 ucontrol
->value
.integer
.value
[1] =
2763 snd_soc_read_signed(codec
, reg
, mask
, rshift
,
2766 ucontrol
->value
.integer
.value
[1] =
2767 snd_soc_read_signed(codec
, reg2
, mask
, shift
,
2770 ucontrol
->value
.integer
.value
[1] =
2771 max
- ucontrol
->value
.integer
.value
[1];
2776 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2779 * snd_soc_put_volsw - single mixer put callback
2780 * @kcontrol: mixer control
2781 * @ucontrol: control element information
2783 * Callback to set the value of a single mixer control, or a double mixer
2784 * control that spans 2 registers.
2786 * Returns 0 for success.
2788 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2789 struct snd_ctl_elem_value
*ucontrol
)
2791 struct soc_mixer_control
*mc
=
2792 (struct soc_mixer_control
*)kcontrol
->private_value
;
2793 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2794 unsigned int reg
= mc
->reg
;
2795 unsigned int reg2
= mc
->rreg
;
2796 unsigned int shift
= mc
->shift
;
2797 unsigned int rshift
= mc
->rshift
;
2800 unsigned int sign_bit
= mc
->sign_bit
;
2801 unsigned int mask
= (1 << fls(max
)) - 1;
2802 unsigned int invert
= mc
->invert
;
2804 bool type_2r
= false;
2805 unsigned int val2
= 0;
2806 unsigned int val
, val_mask
;
2809 mask
= BIT(sign_bit
+ 1) - 1;
2811 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
2814 val_mask
= mask
<< shift
;
2816 if (snd_soc_volsw_is_stereo(mc
)) {
2817 val2
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
2821 val_mask
|= mask
<< rshift
;
2822 val
|= val2
<< rshift
;
2824 val2
= val2
<< shift
;
2828 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2833 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2837 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2840 * snd_soc_get_volsw_sx - single mixer get callback
2841 * @kcontrol: mixer control
2842 * @ucontrol: control element information
2844 * Callback to get the value of a single mixer control, or a double mixer
2845 * control that spans 2 registers.
2847 * Returns 0 for success.
2849 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2850 struct snd_ctl_elem_value
*ucontrol
)
2852 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2853 struct soc_mixer_control
*mc
=
2854 (struct soc_mixer_control
*)kcontrol
->private_value
;
2856 unsigned int reg
= mc
->reg
;
2857 unsigned int reg2
= mc
->rreg
;
2858 unsigned int shift
= mc
->shift
;
2859 unsigned int rshift
= mc
->rshift
;
2862 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2864 ucontrol
->value
.integer
.value
[0] =
2865 ((snd_soc_read(codec
, reg
) >> shift
) - min
) & mask
;
2867 if (snd_soc_volsw_is_stereo(mc
))
2868 ucontrol
->value
.integer
.value
[1] =
2869 ((snd_soc_read(codec
, reg2
) >> rshift
) - min
) & mask
;
2873 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2876 * snd_soc_put_volsw_sx - double mixer set callback
2877 * @kcontrol: mixer control
2878 * @uinfo: control element information
2880 * Callback to set the value of a double mixer control that spans 2 registers.
2882 * Returns 0 for success.
2884 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2885 struct snd_ctl_elem_value
*ucontrol
)
2887 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2888 struct soc_mixer_control
*mc
=
2889 (struct soc_mixer_control
*)kcontrol
->private_value
;
2891 unsigned int reg
= mc
->reg
;
2892 unsigned int reg2
= mc
->rreg
;
2893 unsigned int shift
= mc
->shift
;
2894 unsigned int rshift
= mc
->rshift
;
2897 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2899 unsigned short val
, val_mask
, val2
= 0;
2901 val_mask
= mask
<< shift
;
2902 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2905 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2909 if (snd_soc_volsw_is_stereo(mc
)) {
2910 val_mask
= mask
<< rshift
;
2911 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2912 val2
= val2
<< rshift
;
2914 if (snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
))
2919 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2922 * snd_soc_info_volsw_s8 - signed mixer info callback
2923 * @kcontrol: mixer control
2924 * @uinfo: control element information
2926 * Callback to provide information about a signed mixer control.
2928 * Returns 0 for success.
2930 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2931 struct snd_ctl_elem_info
*uinfo
)
2933 struct soc_mixer_control
*mc
=
2934 (struct soc_mixer_control
*)kcontrol
->private_value
;
2938 if (!mc
->platform_max
)
2939 mc
->platform_max
= mc
->max
;
2940 platform_max
= mc
->platform_max
;
2942 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2944 uinfo
->value
.integer
.min
= 0;
2945 uinfo
->value
.integer
.max
= platform_max
- min
;
2948 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2951 * snd_soc_get_volsw_s8 - signed mixer get callback
2952 * @kcontrol: mixer control
2953 * @ucontrol: control element information
2955 * Callback to get the value of a signed mixer control.
2957 * Returns 0 for success.
2959 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2960 struct snd_ctl_elem_value
*ucontrol
)
2962 struct soc_mixer_control
*mc
=
2963 (struct soc_mixer_control
*)kcontrol
->private_value
;
2964 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2965 unsigned int reg
= mc
->reg
;
2967 int val
= snd_soc_read(codec
, reg
);
2969 ucontrol
->value
.integer
.value
[0] =
2970 ((signed char)(val
& 0xff))-min
;
2971 ucontrol
->value
.integer
.value
[1] =
2972 ((signed char)((val
>> 8) & 0xff))-min
;
2975 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2978 * snd_soc_put_volsw_sgn - signed mixer put callback
2979 * @kcontrol: mixer control
2980 * @ucontrol: control element information
2982 * Callback to set the value of a signed mixer control.
2984 * Returns 0 for success.
2986 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2987 struct snd_ctl_elem_value
*ucontrol
)
2989 struct soc_mixer_control
*mc
=
2990 (struct soc_mixer_control
*)kcontrol
->private_value
;
2991 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2992 unsigned int reg
= mc
->reg
;
2996 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2997 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2999 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
3001 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
3004 * snd_soc_info_volsw_range - single mixer info callback with range.
3005 * @kcontrol: mixer control
3006 * @uinfo: control element information
3008 * Callback to provide information, within a range, about a single
3011 * returns 0 for success.
3013 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
3014 struct snd_ctl_elem_info
*uinfo
)
3016 struct soc_mixer_control
*mc
=
3017 (struct soc_mixer_control
*)kcontrol
->private_value
;
3021 if (!mc
->platform_max
)
3022 mc
->platform_max
= mc
->max
;
3023 platform_max
= mc
->platform_max
;
3025 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3026 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
3027 uinfo
->value
.integer
.min
= 0;
3028 uinfo
->value
.integer
.max
= platform_max
- min
;
3032 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
3035 * snd_soc_put_volsw_range - single mixer put value callback with range.
3036 * @kcontrol: mixer control
3037 * @ucontrol: control element information
3039 * Callback to set the value, within a range, for a single mixer control.
3041 * Returns 0 for success.
3043 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
3044 struct snd_ctl_elem_value
*ucontrol
)
3046 struct soc_mixer_control
*mc
=
3047 (struct soc_mixer_control
*)kcontrol
->private_value
;
3048 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3049 unsigned int reg
= mc
->reg
;
3050 unsigned int rreg
= mc
->rreg
;
3051 unsigned int shift
= mc
->shift
;
3054 unsigned int mask
= (1 << fls(max
)) - 1;
3055 unsigned int invert
= mc
->invert
;
3056 unsigned int val
, val_mask
;
3059 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
3062 val_mask
= mask
<< shift
;
3065 ret
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
3069 if (snd_soc_volsw_is_stereo(mc
)) {
3070 val
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
3073 val_mask
= mask
<< shift
;
3076 ret
= snd_soc_update_bits_locked(codec
, rreg
, val_mask
, val
);
3081 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
3084 * snd_soc_get_volsw_range - single mixer get callback with range
3085 * @kcontrol: mixer control
3086 * @ucontrol: control element information
3088 * Callback to get the value, within a range, of a single mixer control.
3090 * Returns 0 for success.
3092 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
3093 struct snd_ctl_elem_value
*ucontrol
)
3095 struct soc_mixer_control
*mc
=
3096 (struct soc_mixer_control
*)kcontrol
->private_value
;
3097 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3098 unsigned int reg
= mc
->reg
;
3099 unsigned int rreg
= mc
->rreg
;
3100 unsigned int shift
= mc
->shift
;
3103 unsigned int mask
= (1 << fls(max
)) - 1;
3104 unsigned int invert
= mc
->invert
;
3106 ucontrol
->value
.integer
.value
[0] =
3107 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
3109 ucontrol
->value
.integer
.value
[0] =
3110 max
- ucontrol
->value
.integer
.value
[0];
3111 ucontrol
->value
.integer
.value
[0] =
3112 ucontrol
->value
.integer
.value
[0] - min
;
3114 if (snd_soc_volsw_is_stereo(mc
)) {
3115 ucontrol
->value
.integer
.value
[1] =
3116 (snd_soc_read(codec
, rreg
) >> shift
) & mask
;
3118 ucontrol
->value
.integer
.value
[1] =
3119 max
- ucontrol
->value
.integer
.value
[1];
3120 ucontrol
->value
.integer
.value
[1] =
3121 ucontrol
->value
.integer
.value
[1] - min
;
3126 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
3129 * snd_soc_limit_volume - Set new limit to an existing volume control.
3131 * @codec: where to look for the control
3132 * @name: Name of the control
3133 * @max: new maximum limit
3135 * Return 0 for success, else error.
3137 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3138 const char *name
, int max
)
3140 struct snd_card
*card
= codec
->card
->snd_card
;
3141 struct snd_kcontrol
*kctl
;
3142 struct soc_mixer_control
*mc
;
3146 /* Sanity check for name and max */
3147 if (unlikely(!name
|| max
<= 0))
3150 list_for_each_entry(kctl
, &card
->controls
, list
) {
3151 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3157 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3158 if (max
<= mc
->max
) {
3159 mc
->platform_max
= max
;
3165 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3167 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
3168 struct snd_ctl_elem_info
*uinfo
)
3170 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3171 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3173 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
3174 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
3178 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
3180 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
3181 struct snd_ctl_elem_value
*ucontrol
)
3183 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3184 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3187 if (codec
->using_regmap
)
3188 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
3189 ucontrol
->value
.bytes
.data
,
3190 params
->num_regs
* codec
->val_bytes
);
3194 /* Hide any masked bytes to ensure consistent data reporting */
3195 if (ret
== 0 && params
->mask
) {
3196 switch (codec
->val_bytes
) {
3198 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
3201 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
3202 &= cpu_to_be16(~params
->mask
);
3205 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
3206 &= cpu_to_be32(~params
->mask
);
3215 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
3217 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
3218 struct snd_ctl_elem_value
*ucontrol
)
3220 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3221 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3223 unsigned int val
, mask
;
3226 if (!codec
->using_regmap
)
3229 len
= params
->num_regs
* codec
->val_bytes
;
3231 data
= kmemdup(ucontrol
->value
.bytes
.data
, len
, GFP_KERNEL
| GFP_DMA
);
3236 * If we've got a mask then we need to preserve the register
3237 * bits. We shouldn't modify the incoming data so take a
3241 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
3245 val
&= params
->mask
;
3247 switch (codec
->val_bytes
) {
3249 ((u8
*)data
)[0] &= ~params
->mask
;
3250 ((u8
*)data
)[0] |= val
;
3253 mask
= ~params
->mask
;
3254 ret
= regmap_parse_val(codec
->control_data
,
3259 ((u16
*)data
)[0] &= mask
;
3261 ret
= regmap_parse_val(codec
->control_data
,
3266 ((u16
*)data
)[0] |= val
;
3269 mask
= ~params
->mask
;
3270 ret
= regmap_parse_val(codec
->control_data
,
3275 ((u32
*)data
)[0] &= mask
;
3277 ret
= regmap_parse_val(codec
->control_data
,
3282 ((u32
*)data
)[0] |= val
;
3290 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
3298 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
3301 * snd_soc_info_xr_sx - signed multi register info callback
3302 * @kcontrol: mreg control
3303 * @uinfo: control element information
3305 * Callback to provide information of a control that can
3306 * span multiple codec registers which together
3307 * forms a single signed value in a MSB/LSB manner.
3309 * Returns 0 for success.
3311 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
3312 struct snd_ctl_elem_info
*uinfo
)
3314 struct soc_mreg_control
*mc
=
3315 (struct soc_mreg_control
*)kcontrol
->private_value
;
3316 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3318 uinfo
->value
.integer
.min
= mc
->min
;
3319 uinfo
->value
.integer
.max
= mc
->max
;
3323 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
3326 * snd_soc_get_xr_sx - signed multi register get callback
3327 * @kcontrol: mreg control
3328 * @ucontrol: control element information
3330 * Callback to get the value of a control that can span
3331 * multiple codec registers which together forms a single
3332 * signed value in a MSB/LSB manner. The control supports
3333 * specifying total no of bits used to allow for bitfields
3334 * across the multiple codec registers.
3336 * Returns 0 for success.
3338 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
3339 struct snd_ctl_elem_value
*ucontrol
)
3341 struct soc_mreg_control
*mc
=
3342 (struct soc_mreg_control
*)kcontrol
->private_value
;
3343 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3344 unsigned int regbase
= mc
->regbase
;
3345 unsigned int regcount
= mc
->regcount
;
3346 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3347 unsigned int regwmask
= (1<<regwshift
)-1;
3348 unsigned int invert
= mc
->invert
;
3349 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3353 unsigned long regval
;
3356 for (i
= 0; i
< regcount
; i
++) {
3357 regval
= snd_soc_read(codec
, regbase
+i
) & regwmask
;
3358 val
|= regval
<< (regwshift
*(regcount
-i
-1));
3361 if (min
< 0 && val
> max
)
3365 ucontrol
->value
.integer
.value
[0] = val
;
3369 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3372 * snd_soc_put_xr_sx - signed multi register get callback
3373 * @kcontrol: mreg control
3374 * @ucontrol: control element information
3376 * Callback to set the value of a control that can span
3377 * multiple codec registers which together forms a single
3378 * signed value in a MSB/LSB manner. The control supports
3379 * specifying total no of bits used to allow for bitfields
3380 * across the multiple codec registers.
3382 * Returns 0 for success.
3384 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3385 struct snd_ctl_elem_value
*ucontrol
)
3387 struct soc_mreg_control
*mc
=
3388 (struct soc_mreg_control
*)kcontrol
->private_value
;
3389 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3390 unsigned int regbase
= mc
->regbase
;
3391 unsigned int regcount
= mc
->regcount
;
3392 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3393 unsigned int regwmask
= (1<<regwshift
)-1;
3394 unsigned int invert
= mc
->invert
;
3395 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3397 long val
= ucontrol
->value
.integer
.value
[0];
3398 unsigned int i
, regval
, regmask
;
3404 for (i
= 0; i
< regcount
; i
++) {
3405 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3406 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3407 err
= snd_soc_update_bits_locked(codec
, regbase
+i
,
3415 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3418 * snd_soc_get_strobe - strobe get callback
3419 * @kcontrol: mixer control
3420 * @ucontrol: control element information
3422 * Callback get the value of a strobe mixer control.
3424 * Returns 0 for success.
3426 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3427 struct snd_ctl_elem_value
*ucontrol
)
3429 struct soc_mixer_control
*mc
=
3430 (struct soc_mixer_control
*)kcontrol
->private_value
;
3431 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3432 unsigned int reg
= mc
->reg
;
3433 unsigned int shift
= mc
->shift
;
3434 unsigned int mask
= 1 << shift
;
3435 unsigned int invert
= mc
->invert
!= 0;
3436 unsigned int val
= snd_soc_read(codec
, reg
) & mask
;
3438 if (shift
!= 0 && val
!= 0)
3440 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3444 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3447 * snd_soc_put_strobe - strobe put callback
3448 * @kcontrol: mixer control
3449 * @ucontrol: control element information
3451 * Callback strobe a register bit to high then low (or the inverse)
3452 * in one pass of a single mixer enum control.
3454 * Returns 1 for success.
3456 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3457 struct snd_ctl_elem_value
*ucontrol
)
3459 struct soc_mixer_control
*mc
=
3460 (struct soc_mixer_control
*)kcontrol
->private_value
;
3461 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3462 unsigned int reg
= mc
->reg
;
3463 unsigned int shift
= mc
->shift
;
3464 unsigned int mask
= 1 << shift
;
3465 unsigned int invert
= mc
->invert
!= 0;
3466 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3467 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3468 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3471 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val1
);
3475 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val2
);
3478 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3481 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3483 * @clk_id: DAI specific clock ID
3484 * @freq: new clock frequency in Hz
3485 * @dir: new clock direction - input/output.
3487 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3489 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3490 unsigned int freq
, int dir
)
3492 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3493 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3494 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3495 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3500 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3503 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3505 * @clk_id: DAI specific clock ID
3506 * @source: Source for the clock
3507 * @freq: new clock frequency in Hz
3508 * @dir: new clock direction - input/output.
3510 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3512 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3513 int source
, unsigned int freq
, int dir
)
3515 if (codec
->driver
->set_sysclk
)
3516 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3521 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3524 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3526 * @div_id: DAI specific clock divider ID
3527 * @div: new clock divisor.
3529 * Configures the clock dividers. This is used to derive the best DAI bit and
3530 * frame clocks from the system or master clock. It's best to set the DAI bit
3531 * and frame clocks as low as possible to save system power.
3533 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3534 int div_id
, int div
)
3536 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3537 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3541 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3544 * snd_soc_dai_set_pll - configure DAI PLL.
3546 * @pll_id: DAI specific PLL ID
3547 * @source: DAI specific source for the PLL
3548 * @freq_in: PLL input clock frequency in Hz
3549 * @freq_out: requested PLL output clock frequency in Hz
3551 * Configures and enables PLL to generate output clock based on input clock.
3553 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3554 unsigned int freq_in
, unsigned int freq_out
)
3556 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3557 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3559 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3560 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3565 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3568 * snd_soc_codec_set_pll - configure codec PLL.
3570 * @pll_id: DAI specific PLL ID
3571 * @source: DAI specific source for the PLL
3572 * @freq_in: PLL input clock frequency in Hz
3573 * @freq_out: requested PLL output clock frequency in Hz
3575 * Configures and enables PLL to generate output clock based on input clock.
3577 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3578 unsigned int freq_in
, unsigned int freq_out
)
3580 if (codec
->driver
->set_pll
)
3581 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3586 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3589 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3591 * @ratio Ratio of BCLK to Sample rate.
3593 * Configures the DAI for a preset BCLK to sample rate ratio.
3595 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
3597 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
3598 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
3602 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
3605 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3607 * @fmt: SND_SOC_DAIFMT_ format value.
3609 * Configures the DAI hardware format and clocking.
3611 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3613 if (dai
->driver
== NULL
)
3615 if (dai
->driver
->ops
->set_fmt
== NULL
)
3617 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3619 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3622 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3623 * @slots: Number of slots in use.
3624 * @tx_mask: bitmask representing active TX slots.
3625 * @rx_mask: bitmask representing active RX slots.
3627 * Generates the TDM tx and rx slot default masks for DAI.
3629 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
3630 unsigned int *tx_mask
,
3631 unsigned int *rx_mask
)
3633 if (*tx_mask
|| *rx_mask
)
3639 *tx_mask
= (1 << slots
) - 1;
3640 *rx_mask
= (1 << slots
) - 1;
3646 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3648 * @tx_mask: bitmask representing active TX slots.
3649 * @rx_mask: bitmask representing active RX slots.
3650 * @slots: Number of slots in use.
3651 * @slot_width: Width in bits for each slot.
3653 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3656 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3657 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3659 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
3660 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
3661 &tx_mask
, &rx_mask
);
3663 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
3665 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3666 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3671 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3674 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3676 * @tx_num: how many TX channels
3677 * @tx_slot: pointer to an array which imply the TX slot number channel
3679 * @rx_num: how many RX channels
3680 * @rx_slot: pointer to an array which imply the RX slot number channel
3683 * configure the relationship between channel number and TDM slot number.
3685 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3686 unsigned int tx_num
, unsigned int *tx_slot
,
3687 unsigned int rx_num
, unsigned int *rx_slot
)
3689 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3690 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3695 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3698 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3700 * @tristate: tristate enable
3702 * Tristates the DAI so that others can use it.
3704 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3706 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3707 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3711 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3714 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3716 * @mute: mute enable
3717 * @direction: stream to mute
3719 * Mutes the DAI DAC.
3721 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
3727 if (dai
->driver
->ops
->mute_stream
)
3728 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
3729 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
3730 dai
->driver
->ops
->digital_mute
)
3731 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3735 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3738 * snd_soc_register_card - Register a card with the ASoC core
3740 * @card: Card to register
3743 int snd_soc_register_card(struct snd_soc_card
*card
)
3747 if (!card
->name
|| !card
->dev
)
3750 for (i
= 0; i
< card
->num_links
; i
++) {
3751 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3754 * Codec must be specified by 1 of name or OF node,
3755 * not both or neither.
3757 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3759 "ASoC: Neither/both codec name/of_node are set for %s\n",
3763 /* Codec DAI name must be specified */
3764 if (!link
->codec_dai_name
) {
3766 "ASoC: codec_dai_name not set for %s\n",
3772 * Platform may be specified by either name or OF node, but
3773 * can be left unspecified, and a dummy platform will be used.
3775 if (link
->platform_name
&& link
->platform_of_node
) {
3777 "ASoC: Both platform name/of_node are set for %s\n",
3783 * CPU device may be specified by either name or OF node, but
3784 * can be left unspecified, and will be matched based on DAI
3787 if (link
->cpu_name
&& link
->cpu_of_node
) {
3789 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3794 * At least one of CPU DAI name or CPU device name/node must be
3797 if (!link
->cpu_dai_name
&&
3798 !(link
->cpu_name
|| link
->cpu_of_node
)) {
3800 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3806 dev_set_drvdata(card
->dev
, card
);
3808 snd_soc_initialize_card_lists(card
);
3810 soc_init_card_debugfs(card
);
3812 card
->rtd
= devm_kzalloc(card
->dev
,
3813 sizeof(struct snd_soc_pcm_runtime
) *
3814 (card
->num_links
+ card
->num_aux_devs
),
3816 if (card
->rtd
== NULL
)
3819 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3821 for (i
= 0; i
< card
->num_links
; i
++)
3822 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3824 INIT_LIST_HEAD(&card
->list
);
3825 INIT_LIST_HEAD(&card
->dapm_dirty
);
3826 card
->instantiated
= 0;
3827 mutex_init(&card
->mutex
);
3828 mutex_init(&card
->dapm_mutex
);
3830 ret
= snd_soc_instantiate_card(card
);
3832 soc_cleanup_card_debugfs(card
);
3834 /* deactivate pins to sleep state */
3835 for (i
= 0; i
< card
->num_rtd
; i
++) {
3836 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
3837 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
3838 if (!codec_dai
->active
)
3839 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
3840 if (!cpu_dai
->active
)
3841 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
3846 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3849 * snd_soc_unregister_card - Unregister a card with the ASoC core
3851 * @card: Card to unregister
3854 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3856 if (card
->instantiated
)
3857 soc_cleanup_card_resources(card
);
3858 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3862 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3865 * Simplify DAI link configuration by removing ".-1" from device names
3866 * and sanitizing names.
3868 static char *fmt_single_name(struct device
*dev
, int *id
)
3870 char *found
, name
[NAME_SIZE
];
3873 if (dev_name(dev
) == NULL
)
3876 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3878 /* are we a "%s.%d" name (platform and SPI components) */
3879 found
= strstr(name
, dev
->driver
->name
);
3882 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3884 /* discard ID from name if ID == -1 */
3886 found
[strlen(dev
->driver
->name
)] = '\0';
3890 /* I2C component devices are named "bus-addr" */
3891 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3892 char tmp
[NAME_SIZE
];
3894 /* create unique ID number from I2C addr and bus */
3895 *id
= ((id1
& 0xffff) << 16) + id2
;
3897 /* sanitize component name for DAI link creation */
3898 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3899 strlcpy(name
, tmp
, NAME_SIZE
);
3904 return kstrdup(name
, GFP_KERNEL
);
3908 * Simplify DAI link naming for single devices with multiple DAIs by removing
3909 * any ".-1" and using the DAI name (instead of device name).
3911 static inline char *fmt_multiple_name(struct device
*dev
,
3912 struct snd_soc_dai_driver
*dai_drv
)
3914 if (dai_drv
->name
== NULL
) {
3916 "ASoC: error - multiple DAI %s registered with no name\n",
3921 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3925 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3927 * @component: The component for which the DAIs should be unregistered
3929 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
3931 struct snd_soc_dai
*dai
, *_dai
;
3933 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3934 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3936 list_del(&dai
->list
);
3943 * snd_soc_register_dais - Register a DAI with the ASoC core
3945 * @component: The component the DAIs are registered for
3946 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3948 * @dai_drv: DAI driver to use for the DAIs
3949 * @count: Number of DAIs
3950 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3953 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3954 struct snd_soc_codec
*codec
, struct snd_soc_dai_driver
*dai_drv
,
3955 size_t count
, bool legacy_dai_naming
)
3957 struct device
*dev
= component
->dev
;
3958 struct snd_soc_dai
*dai
;
3962 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
3964 for (i
= 0; i
< count
; i
++) {
3966 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3973 * Back in the old days when we still had component-less DAIs,
3974 * instead of having a static name, component-less DAIs would
3975 * inherit the name of the parent device so it is possible to
3976 * register multiple instances of the DAI. We still need to keep
3977 * the same naming style even though those DAIs are not
3978 * component-less anymore.
3980 if (count
== 1 && legacy_dai_naming
) {
3981 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3983 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3985 dai
->id
= dai_drv
[i
].id
;
3989 if (dai
->name
== NULL
) {
3995 dai
->component
= component
;
3998 dai
->driver
= &dai_drv
[i
];
3999 dai
->dapm
.dev
= dev
;
4000 if (!dai
->driver
->ops
)
4001 dai
->driver
->ops
= &null_dai_ops
;
4004 dai
->dapm
.idle_bias_off
= 1;
4006 list_add(&dai
->list
, &component
->dai_list
);
4008 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
4014 snd_soc_unregister_dais(component
);
4020 * snd_soc_register_component - Register a component with the ASoC core
4024 __snd_soc_register_component(struct device
*dev
,
4025 struct snd_soc_component
*cmpnt
,
4026 const struct snd_soc_component_driver
*cmpnt_drv
,
4027 struct snd_soc_codec
*codec
,
4028 struct snd_soc_dai_driver
*dai_drv
,
4029 int num_dai
, bool allow_single_dai
)
4033 dev_dbg(dev
, "component register %s\n", dev_name(dev
));
4036 dev_err(dev
, "ASoC: Failed to connecting component\n");
4040 cmpnt
->name
= fmt_single_name(dev
, &cmpnt
->id
);
4042 dev_err(dev
, "ASoC: Failed to simplifying name\n");
4047 cmpnt
->driver
= cmpnt_drv
;
4048 cmpnt
->dai_drv
= dai_drv
;
4049 cmpnt
->num_dai
= num_dai
;
4050 INIT_LIST_HEAD(&cmpnt
->dai_list
);
4052 ret
= snd_soc_register_dais(cmpnt
, codec
, dai_drv
, num_dai
,
4055 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4056 goto error_component_name
;
4059 mutex_lock(&client_mutex
);
4060 list_add(&cmpnt
->list
, &component_list
);
4061 mutex_unlock(&client_mutex
);
4063 dev_dbg(cmpnt
->dev
, "ASoC: Registered component '%s'\n", cmpnt
->name
);
4067 error_component_name
:
4073 int snd_soc_register_component(struct device
*dev
,
4074 const struct snd_soc_component_driver
*cmpnt_drv
,
4075 struct snd_soc_dai_driver
*dai_drv
,
4078 struct snd_soc_component
*cmpnt
;
4080 cmpnt
= devm_kzalloc(dev
, sizeof(*cmpnt
), GFP_KERNEL
);
4082 dev_err(dev
, "ASoC: Failed to allocate memory\n");
4086 cmpnt
->ignore_pmdown_time
= true;
4088 return __snd_soc_register_component(dev
, cmpnt
, cmpnt_drv
, NULL
,
4089 dai_drv
, num_dai
, true);
4091 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
4094 * snd_soc_unregister_component - Unregister a component from the ASoC core
4097 void snd_soc_unregister_component(struct device
*dev
)
4099 struct snd_soc_component
*cmpnt
;
4101 list_for_each_entry(cmpnt
, &component_list
, list
) {
4102 if (dev
== cmpnt
->dev
)
4108 snd_soc_unregister_dais(cmpnt
);
4110 mutex_lock(&client_mutex
);
4111 list_del(&cmpnt
->list
);
4112 mutex_unlock(&client_mutex
);
4114 dev_dbg(dev
, "ASoC: Unregistered component '%s'\n", cmpnt
->name
);
4117 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
4120 * snd_soc_add_platform - Add a platform to the ASoC core
4121 * @dev: The parent device for the platform
4122 * @platform: The platform to add
4123 * @platform_driver: The driver for the platform
4125 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
4126 const struct snd_soc_platform_driver
*platform_drv
)
4128 /* create platform component name */
4129 platform
->name
= fmt_single_name(dev
, &platform
->id
);
4130 if (platform
->name
== NULL
)
4133 platform
->dev
= dev
;
4134 platform
->driver
= platform_drv
;
4135 platform
->dapm
.dev
= dev
;
4136 platform
->dapm
.platform
= platform
;
4137 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
4138 mutex_init(&platform
->mutex
);
4140 mutex_lock(&client_mutex
);
4141 list_add(&platform
->list
, &platform_list
);
4142 mutex_unlock(&client_mutex
);
4144 dev_dbg(dev
, "ASoC: Registered platform '%s'\n", platform
->name
);
4148 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
4151 * snd_soc_register_platform - Register a platform with the ASoC core
4153 * @platform: platform to register
4155 int snd_soc_register_platform(struct device
*dev
,
4156 const struct snd_soc_platform_driver
*platform_drv
)
4158 struct snd_soc_platform
*platform
;
4161 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
4163 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
4164 if (platform
== NULL
)
4167 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
4173 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
4176 * snd_soc_remove_platform - Remove a platform from the ASoC core
4177 * @platform: the platform to remove
4179 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
4181 mutex_lock(&client_mutex
);
4182 list_del(&platform
->list
);
4183 mutex_unlock(&client_mutex
);
4185 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
4187 kfree(platform
->name
);
4189 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
4191 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
4193 struct snd_soc_platform
*platform
;
4195 list_for_each_entry(platform
, &platform_list
, list
) {
4196 if (dev
== platform
->dev
)
4202 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
4205 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4207 * @platform: platform to unregister
4209 void snd_soc_unregister_platform(struct device
*dev
)
4211 struct snd_soc_platform
*platform
;
4213 platform
= snd_soc_lookup_platform(dev
);
4217 snd_soc_remove_platform(platform
);
4220 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
4222 static u64 codec_format_map
[] = {
4223 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
4224 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
4225 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
4226 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
4227 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
4228 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
4229 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4230 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4231 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
4232 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
4233 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
4234 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
4235 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
4236 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
4237 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4238 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
4241 /* Fix up the DAI formats for endianness: codecs don't actually see
4242 * the endianness of the data but we're using the CPU format
4243 * definitions which do need to include endianness so we ensure that
4244 * codec DAIs always have both big and little endian variants set.
4246 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
4250 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
4251 if (stream
->formats
& codec_format_map
[i
])
4252 stream
->formats
|= codec_format_map
[i
];
4256 * snd_soc_register_codec - Register a codec with the ASoC core
4258 * @codec: codec to register
4260 int snd_soc_register_codec(struct device
*dev
,
4261 const struct snd_soc_codec_driver
*codec_drv
,
4262 struct snd_soc_dai_driver
*dai_drv
,
4265 struct snd_soc_codec
*codec
;
4268 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
4270 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
4274 /* create CODEC component name */
4275 codec
->name
= fmt_single_name(dev
, &codec
->id
);
4276 if (codec
->name
== NULL
) {
4281 codec
->write
= codec_drv
->write
;
4282 codec
->read
= codec_drv
->read
;
4283 codec
->volatile_register
= codec_drv
->volatile_register
;
4284 codec
->readable_register
= codec_drv
->readable_register
;
4285 codec
->writable_register
= codec_drv
->writable_register
;
4286 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
4287 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
4288 codec
->dapm
.dev
= dev
;
4289 codec
->dapm
.codec
= codec
;
4290 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
4291 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
4293 codec
->driver
= codec_drv
;
4294 codec
->num_dai
= num_dai
;
4295 mutex_init(&codec
->mutex
);
4297 for (i
= 0; i
< num_dai
; i
++) {
4298 fixup_codec_formats(&dai_drv
[i
].playback
);
4299 fixup_codec_formats(&dai_drv
[i
].capture
);
4302 mutex_lock(&client_mutex
);
4303 list_add(&codec
->list
, &codec_list
);
4304 mutex_unlock(&client_mutex
);
4306 /* register component */
4307 ret
= __snd_soc_register_component(dev
, &codec
->component
,
4308 &codec_drv
->component_driver
,
4309 codec
, dai_drv
, num_dai
, false);
4311 dev_err(codec
->dev
, "ASoC: Failed to regster component: %d\n", ret
);
4312 goto fail_codec_name
;
4315 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n", codec
->name
);
4319 mutex_lock(&client_mutex
);
4320 list_del(&codec
->list
);
4321 mutex_unlock(&client_mutex
);
4328 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
4331 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4333 * @codec: codec to unregister
4335 void snd_soc_unregister_codec(struct device
*dev
)
4337 struct snd_soc_codec
*codec
;
4339 list_for_each_entry(codec
, &codec_list
, list
) {
4340 if (dev
== codec
->dev
)
4346 snd_soc_unregister_component(dev
);
4348 mutex_lock(&client_mutex
);
4349 list_del(&codec
->list
);
4350 mutex_unlock(&client_mutex
);
4352 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n", codec
->name
);
4354 snd_soc_cache_exit(codec
);
4358 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
4360 /* Retrieve a card's name from device tree */
4361 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
4362 const char *propname
)
4364 struct device_node
*np
= card
->dev
->of_node
;
4367 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
4369 * EINVAL means the property does not exist. This is fine providing
4370 * card->name was previously set, which is checked later in
4371 * snd_soc_register_card.
4373 if (ret
< 0 && ret
!= -EINVAL
) {
4375 "ASoC: Property '%s' could not be read: %d\n",
4382 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
4384 static const struct snd_soc_dapm_widget simple_widgets
[] = {
4385 SND_SOC_DAPM_MIC("Microphone", NULL
),
4386 SND_SOC_DAPM_LINE("Line", NULL
),
4387 SND_SOC_DAPM_HP("Headphone", NULL
),
4388 SND_SOC_DAPM_SPK("Speaker", NULL
),
4391 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
4392 const char *propname
)
4394 struct device_node
*np
= card
->dev
->of_node
;
4395 struct snd_soc_dapm_widget
*widgets
;
4396 const char *template, *wname
;
4397 int i
, j
, num_widgets
, ret
;
4399 num_widgets
= of_property_count_strings(np
, propname
);
4400 if (num_widgets
< 0) {
4402 "ASoC: Property '%s' does not exist\n", propname
);
4405 if (num_widgets
& 1) {
4407 "ASoC: Property '%s' length is not even\n", propname
);
4413 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4418 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
4422 "ASoC: Could not allocate memory for widgets\n");
4426 for (i
= 0; i
< num_widgets
; i
++) {
4427 ret
= of_property_read_string_index(np
, propname
,
4431 "ASoC: Property '%s' index %d read error:%d\n",
4432 propname
, 2 * i
, ret
);
4436 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
4437 if (!strncmp(template, simple_widgets
[j
].name
,
4438 strlen(simple_widgets
[j
].name
))) {
4439 widgets
[i
] = simple_widgets
[j
];
4444 if (j
>= ARRAY_SIZE(simple_widgets
)) {
4446 "ASoC: DAPM widget '%s' is not supported\n",
4451 ret
= of_property_read_string_index(np
, propname
,
4456 "ASoC: Property '%s' index %d read error:%d\n",
4457 propname
, (2 * i
) + 1, ret
);
4461 widgets
[i
].name
= wname
;
4464 card
->dapm_widgets
= widgets
;
4465 card
->num_dapm_widgets
= num_widgets
;
4469 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
4471 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
4472 unsigned int *slots
,
4473 unsigned int *slot_width
)
4478 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
4479 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
4487 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
4488 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
4498 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4500 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4501 const char *propname
)
4503 struct device_node
*np
= card
->dev
->of_node
;
4505 struct snd_soc_dapm_route
*routes
;
4508 num_routes
= of_property_count_strings(np
, propname
);
4509 if (num_routes
< 0 || num_routes
& 1) {
4511 "ASoC: Property '%s' does not exist or its length is not even\n",
4517 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4522 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4526 "ASoC: Could not allocate DAPM route table\n");
4530 for (i
= 0; i
< num_routes
; i
++) {
4531 ret
= of_property_read_string_index(np
, propname
,
4532 2 * i
, &routes
[i
].sink
);
4535 "ASoC: Property '%s' index %d could not be read: %d\n",
4536 propname
, 2 * i
, ret
);
4539 ret
= of_property_read_string_index(np
, propname
,
4540 (2 * i
) + 1, &routes
[i
].source
);
4543 "ASoC: Property '%s' index %d could not be read: %d\n",
4544 propname
, (2 * i
) + 1, ret
);
4549 card
->num_dapm_routes
= num_routes
;
4550 card
->dapm_routes
= routes
;
4554 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4556 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4561 unsigned int format
= 0;
4567 } of_fmt_table
[] = {
4568 { "i2s", SND_SOC_DAIFMT_I2S
},
4569 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4570 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4571 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4572 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4573 { "ac97", SND_SOC_DAIFMT_AC97
},
4574 { "pdm", SND_SOC_DAIFMT_PDM
},
4575 { "msb", SND_SOC_DAIFMT_MSB
},
4576 { "lsb", SND_SOC_DAIFMT_LSB
},
4583 * check "[prefix]format = xxx"
4584 * SND_SOC_DAIFMT_FORMAT_MASK area
4586 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4587 ret
= of_property_read_string(np
, prop
, &str
);
4589 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4590 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4591 format
|= of_fmt_table
[i
].val
;
4598 * check "[prefix]continuous-clock"
4599 * SND_SOC_DAIFMT_CLOCK_MASK area
4601 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4602 if (of_get_property(np
, prop
, NULL
))
4603 format
|= SND_SOC_DAIFMT_CONT
;
4605 format
|= SND_SOC_DAIFMT_GATED
;
4608 * check "[prefix]bitclock-inversion"
4609 * check "[prefix]frame-inversion"
4610 * SND_SOC_DAIFMT_INV_MASK area
4612 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4613 bit
= !!of_get_property(np
, prop
, NULL
);
4615 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4616 frame
= !!of_get_property(np
, prop
, NULL
);
4618 switch ((bit
<< 4) + frame
) {
4620 format
|= SND_SOC_DAIFMT_IB_IF
;
4623 format
|= SND_SOC_DAIFMT_IB_NF
;
4626 format
|= SND_SOC_DAIFMT_NB_IF
;
4629 /* SND_SOC_DAIFMT_NB_NF is default */
4634 * check "[prefix]bitclock-master"
4635 * check "[prefix]frame-master"
4636 * SND_SOC_DAIFMT_MASTER_MASK area
4638 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4639 bit
= !!of_get_property(np
, prop
, NULL
);
4641 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4642 frame
= !!of_get_property(np
, prop
, NULL
);
4644 switch ((bit
<< 4) + frame
) {
4646 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4649 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4652 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4655 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4661 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4663 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4664 const char **dai_name
)
4666 struct snd_soc_component
*pos
;
4667 struct of_phandle_args args
;
4670 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4671 "#sound-dai-cells", 0, &args
);
4675 ret
= -EPROBE_DEFER
;
4677 mutex_lock(&client_mutex
);
4678 list_for_each_entry(pos
, &component_list
, list
) {
4679 if (pos
->dev
->of_node
!= args
.np
)
4682 if (pos
->driver
->of_xlate_dai_name
) {
4683 ret
= pos
->driver
->of_xlate_dai_name(pos
, &args
, dai_name
);
4687 switch (args
.args_count
) {
4689 id
= 0; /* same as dai_drv[0] */
4699 if (id
< 0 || id
>= pos
->num_dai
) {
4706 *dai_name
= pos
->dai_drv
[id
].name
;
4708 *dai_name
= pos
->name
;
4713 mutex_unlock(&client_mutex
);
4715 of_node_put(args
.np
);
4719 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4721 static int __init
snd_soc_init(void)
4723 #ifdef CONFIG_DEBUG_FS
4724 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
4725 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
4726 pr_warn("ASoC: Failed to create debugfs directory\n");
4727 snd_soc_debugfs_root
= NULL
;
4730 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
4732 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4734 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
4736 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4738 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
4739 &platform_list_fops
))
4740 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4743 snd_soc_util_init();
4745 return platform_driver_register(&soc_driver
);
4747 module_init(snd_soc_init
);
4749 static void __exit
snd_soc_exit(void)
4751 snd_soc_util_exit();
4753 #ifdef CONFIG_DEBUG_FS
4754 debugfs_remove_recursive(snd_soc_debugfs_root
);
4756 platform_driver_unregister(&soc_driver
);
4758 module_exit(snd_soc_exit
);
4760 /* Module information */
4761 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4762 MODULE_DESCRIPTION("ALSA SoC Core");
4763 MODULE_LICENSE("GPL");
4764 MODULE_ALIAS("platform:soc-audio");