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(dai_list
);
60 static LIST_HEAD(platform_list
);
61 static LIST_HEAD(codec_list
);
62 static LIST_HEAD(component_list
);
65 * This is a timeout to do a DAPM powerdown after a stream is closed().
66 * It can be used to eliminate pops between different playback streams, e.g.
67 * between two audio tracks.
69 static int pmdown_time
= 5000;
70 module_param(pmdown_time
, int, 0);
71 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
73 struct snd_ac97_reset_cfg
{
75 struct pinctrl_state
*pstate_reset
;
76 struct pinctrl_state
*pstate_warm_reset
;
77 struct pinctrl_state
*pstate_run
;
83 /* returns the minimum number of bytes needed to represent
84 * a particular given value */
85 static int min_bytes_needed(unsigned long val
)
90 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
93 c
= (sizeof val
* 8) - c
;
101 /* fill buf which is 'len' bytes with a formatted
102 * string of the form 'reg: value\n' */
103 static int format_register_str(struct snd_soc_codec
*codec
,
104 unsigned int reg
, char *buf
, size_t len
)
106 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
107 int regsize
= codec
->driver
->reg_word_size
* 2;
109 char tmpbuf
[len
+ 1];
110 char regbuf
[regsize
+ 1];
112 /* since tmpbuf is allocated on the stack, warn the callers if they
113 * try to abuse this function */
116 /* +2 for ': ' and + 1 for '\n' */
117 if (wordsize
+ regsize
+ 2 + 1 != len
)
120 ret
= snd_soc_read(codec
, reg
);
122 memset(regbuf
, 'X', regsize
);
123 regbuf
[regsize
] = '\0';
125 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
128 /* prepare the buffer */
129 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
130 /* copy it back to the caller without the '\0' */
131 memcpy(buf
, tmpbuf
, len
);
136 /* codec register dump */
137 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
138 size_t count
, loff_t pos
)
141 int wordsize
, regsize
;
146 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
147 regsize
= codec
->driver
->reg_word_size
* 2;
149 len
= wordsize
+ regsize
+ 2 + 1;
151 if (!codec
->driver
->reg_cache_size
)
154 if (codec
->driver
->reg_cache_step
)
155 step
= codec
->driver
->reg_cache_step
;
157 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
158 if (!snd_soc_codec_readable_register(codec
, i
))
160 if (codec
->driver
->display_register
) {
161 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
162 PAGE_SIZE
- count
, i
);
164 /* only support larger than PAGE_SIZE bytes debugfs
165 * entries for the default case */
167 if (total
+ len
>= count
- 1)
169 format_register_str(codec
, i
, buf
+ total
, len
);
176 total
= min(total
, count
- 1);
181 static ssize_t
codec_reg_show(struct device
*dev
,
182 struct device_attribute
*attr
, char *buf
)
184 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
186 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
189 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
191 static ssize_t
pmdown_time_show(struct device
*dev
,
192 struct device_attribute
*attr
, char *buf
)
194 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
196 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
199 static ssize_t
pmdown_time_set(struct device
*dev
,
200 struct device_attribute
*attr
,
201 const char *buf
, size_t count
)
203 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
206 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
213 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
215 #ifdef CONFIG_DEBUG_FS
216 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
217 size_t count
, loff_t
*ppos
)
220 struct snd_soc_codec
*codec
= file
->private_data
;
223 if (*ppos
< 0 || !count
)
226 buf
= kmalloc(count
, GFP_KERNEL
);
230 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
232 if (copy_to_user(user_buf
, buf
, ret
)) {
243 static ssize_t
codec_reg_write_file(struct file
*file
,
244 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
249 unsigned long reg
, value
;
250 struct snd_soc_codec
*codec
= file
->private_data
;
253 buf_size
= min(count
, (sizeof(buf
)-1));
254 if (copy_from_user(buf
, user_buf
, buf_size
))
258 while (*start
== ' ')
260 reg
= simple_strtoul(start
, &start
, 16);
261 while (*start
== ' ')
263 ret
= kstrtoul(start
, 16, &value
);
267 /* Userspace has been fiddling around behind the kernel's back */
268 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
270 snd_soc_write(codec
, reg
, value
);
274 static const struct file_operations codec_reg_fops
= {
276 .read
= codec_reg_read_file
,
277 .write
= codec_reg_write_file
,
278 .llseek
= default_llseek
,
281 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
283 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
285 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
287 if (!codec
->debugfs_codec_root
) {
289 "ASoC: Failed to create codec debugfs directory\n");
293 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
295 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
298 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
299 codec
->debugfs_codec_root
,
300 codec
, &codec_reg_fops
);
301 if (!codec
->debugfs_reg
)
303 "ASoC: Failed to create codec register debugfs file\n");
305 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
308 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
310 debugfs_remove_recursive(codec
->debugfs_codec_root
);
313 static void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
315 struct dentry
*debugfs_card_root
= platform
->card
->debugfs_card_root
;
317 platform
->debugfs_platform_root
= debugfs_create_dir(platform
->name
,
319 if (!platform
->debugfs_platform_root
) {
320 dev_warn(platform
->dev
,
321 "ASoC: Failed to create platform debugfs directory\n");
325 snd_soc_dapm_debugfs_init(&platform
->dapm
,
326 platform
->debugfs_platform_root
);
329 static void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
331 debugfs_remove_recursive(platform
->debugfs_platform_root
);
334 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
335 size_t count
, loff_t
*ppos
)
337 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
338 ssize_t len
, ret
= 0;
339 struct snd_soc_codec
*codec
;
344 list_for_each_entry(codec
, &codec_list
, list
) {
345 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
349 if (ret
> PAGE_SIZE
) {
356 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
363 static const struct file_operations codec_list_fops
= {
364 .read
= codec_list_read_file
,
365 .llseek
= default_llseek
,/* read accesses f_pos */
368 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
369 size_t count
, loff_t
*ppos
)
371 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
372 ssize_t len
, ret
= 0;
373 struct snd_soc_dai
*dai
;
378 list_for_each_entry(dai
, &dai_list
, list
) {
379 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
382 if (ret
> PAGE_SIZE
) {
388 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
395 static const struct file_operations dai_list_fops
= {
396 .read
= dai_list_read_file
,
397 .llseek
= default_llseek
,/* read accesses f_pos */
400 static ssize_t
platform_list_read_file(struct file
*file
,
401 char __user
*user_buf
,
402 size_t count
, loff_t
*ppos
)
404 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
405 ssize_t len
, ret
= 0;
406 struct snd_soc_platform
*platform
;
411 list_for_each_entry(platform
, &platform_list
, list
) {
412 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
416 if (ret
> PAGE_SIZE
) {
422 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
429 static const struct file_operations platform_list_fops
= {
430 .read
= platform_list_read_file
,
431 .llseek
= default_llseek
,/* read accesses f_pos */
434 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
436 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
437 snd_soc_debugfs_root
);
438 if (!card
->debugfs_card_root
) {
440 "ASoC: Failed to create card debugfs directory\n");
444 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
445 card
->debugfs_card_root
,
447 if (!card
->debugfs_pop_time
)
449 "ASoC: Failed to create pop time debugfs file\n");
452 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
454 debugfs_remove_recursive(card
->debugfs_card_root
);
459 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
463 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
467 static inline void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
471 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
475 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
479 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
484 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
485 const char *dai_link
, int stream
)
489 for (i
= 0; i
< card
->num_links
; i
++) {
490 if (card
->rtd
[i
].dai_link
->no_pcm
&&
491 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
492 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
494 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
497 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
499 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
500 const char *dai_link
)
504 for (i
= 0; i
< card
->num_links
; i
++) {
505 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
506 return &card
->rtd
[i
];
508 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
511 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
513 #ifdef CONFIG_SND_SOC_AC97_BUS
514 /* unregister ac97 codec */
515 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
517 if (codec
->ac97
->dev
.bus
)
518 device_unregister(&codec
->ac97
->dev
);
522 /* stop no dev release warning */
523 static void soc_ac97_device_release(struct device
*dev
){}
525 /* register ac97 codec to bus */
526 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
530 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
531 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
532 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
534 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
535 codec
->card
->snd_card
->number
, 0, codec
->name
);
536 err
= device_register(&codec
->ac97
->dev
);
538 dev_err(codec
->dev
, "ASoC: Can't register ac97 bus\n");
539 codec
->ac97
->dev
.bus
= NULL
;
546 static void codec2codec_close_delayed_work(struct work_struct
*work
)
548 /* Currently nothing to do for c2c links
549 * Since c2c links are internal nodes in the DAPM graph and
550 * don't interface with the outside world or application layer
551 * we don't have to do any special handling on close.
555 #ifdef CONFIG_PM_SLEEP
556 /* powers down audio subsystem for suspend */
557 int snd_soc_suspend(struct device
*dev
)
559 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
560 struct snd_soc_codec
*codec
;
563 /* If the initialization of this soc device failed, there is no codec
564 * associated with it. Just bail out in this case.
566 if (list_empty(&card
->codec_dev_list
))
569 /* Due to the resume being scheduled into a workqueue we could
570 * suspend before that's finished - wait for it to complete.
572 snd_power_lock(card
->snd_card
);
573 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
574 snd_power_unlock(card
->snd_card
);
576 /* we're going to block userspace touching us until resume completes */
577 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
579 /* mute any active DACs */
580 for (i
= 0; i
< card
->num_rtd
; i
++) {
581 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
582 struct snd_soc_dai_driver
*drv
= dai
->driver
;
584 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
587 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
588 drv
->ops
->digital_mute(dai
, 1);
591 /* suspend all pcms */
592 for (i
= 0; i
< card
->num_rtd
; i
++) {
593 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
596 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
599 if (card
->suspend_pre
)
600 card
->suspend_pre(card
);
602 for (i
= 0; i
< card
->num_rtd
; i
++) {
603 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
604 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
606 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
609 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
610 cpu_dai
->driver
->suspend(cpu_dai
);
611 if (platform
->driver
->suspend
&& !platform
->suspended
) {
612 platform
->driver
->suspend(cpu_dai
);
613 platform
->suspended
= 1;
617 /* close any waiting streams and save state */
618 for (i
= 0; i
< card
->num_rtd
; i
++) {
619 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
620 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
623 for (i
= 0; i
< card
->num_rtd
; i
++) {
625 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
628 snd_soc_dapm_stream_event(&card
->rtd
[i
],
629 SNDRV_PCM_STREAM_PLAYBACK
,
630 SND_SOC_DAPM_STREAM_SUSPEND
);
632 snd_soc_dapm_stream_event(&card
->rtd
[i
],
633 SNDRV_PCM_STREAM_CAPTURE
,
634 SND_SOC_DAPM_STREAM_SUSPEND
);
637 /* Recheck all analogue paths too */
638 dapm_mark_io_dirty(&card
->dapm
);
639 snd_soc_dapm_sync(&card
->dapm
);
641 /* suspend all CODECs */
642 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
643 /* If there are paths active then the CODEC will be held with
644 * bias _ON and should not be suspended. */
645 if (!codec
->suspended
&& codec
->driver
->suspend
) {
646 switch (codec
->dapm
.bias_level
) {
647 case SND_SOC_BIAS_STANDBY
:
649 * If the CODEC is capable of idle
650 * bias off then being in STANDBY
651 * means it's doing something,
652 * otherwise fall through.
654 if (codec
->dapm
.idle_bias_off
) {
656 "ASoC: idle_bias_off CODEC on over suspend\n");
659 case SND_SOC_BIAS_OFF
:
660 codec
->driver
->suspend(codec
);
661 codec
->suspended
= 1;
662 codec
->cache_sync
= 1;
663 if (codec
->using_regmap
)
664 regcache_mark_dirty(codec
->control_data
);
668 "ASoC: CODEC is on over suspend\n");
674 for (i
= 0; i
< card
->num_rtd
; i
++) {
675 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
677 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
680 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
681 cpu_dai
->driver
->suspend(cpu_dai
);
684 if (card
->suspend_post
)
685 card
->suspend_post(card
);
689 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
691 /* deferred resume work, so resume can complete before we finished
692 * setting our codec back up, which can be very slow on I2C
694 static void soc_resume_deferred(struct work_struct
*work
)
696 struct snd_soc_card
*card
=
697 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
698 struct snd_soc_codec
*codec
;
701 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
702 * so userspace apps are blocked from touching us
705 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
707 /* Bring us up into D2 so that DAPM starts enabling things */
708 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
710 if (card
->resume_pre
)
711 card
->resume_pre(card
);
713 /* resume AC97 DAIs */
714 for (i
= 0; i
< card
->num_rtd
; i
++) {
715 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
717 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
720 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
721 cpu_dai
->driver
->resume(cpu_dai
);
724 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
725 /* If the CODEC was idle over suspend then it will have been
726 * left with bias OFF or STANDBY and suspended so we must now
727 * resume. Otherwise the suspend was suppressed.
729 if (codec
->driver
->resume
&& codec
->suspended
) {
730 switch (codec
->dapm
.bias_level
) {
731 case SND_SOC_BIAS_STANDBY
:
732 case SND_SOC_BIAS_OFF
:
733 codec
->driver
->resume(codec
);
734 codec
->suspended
= 0;
738 "ASoC: CODEC was on over suspend\n");
744 for (i
= 0; i
< card
->num_rtd
; i
++) {
746 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
749 snd_soc_dapm_stream_event(&card
->rtd
[i
],
750 SNDRV_PCM_STREAM_PLAYBACK
,
751 SND_SOC_DAPM_STREAM_RESUME
);
753 snd_soc_dapm_stream_event(&card
->rtd
[i
],
754 SNDRV_PCM_STREAM_CAPTURE
,
755 SND_SOC_DAPM_STREAM_RESUME
);
758 /* unmute any active DACs */
759 for (i
= 0; i
< card
->num_rtd
; i
++) {
760 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
761 struct snd_soc_dai_driver
*drv
= dai
->driver
;
763 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
766 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
767 drv
->ops
->digital_mute(dai
, 0);
770 for (i
= 0; i
< card
->num_rtd
; i
++) {
771 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
772 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
774 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
777 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
778 cpu_dai
->driver
->resume(cpu_dai
);
779 if (platform
->driver
->resume
&& platform
->suspended
) {
780 platform
->driver
->resume(cpu_dai
);
781 platform
->suspended
= 0;
785 if (card
->resume_post
)
786 card
->resume_post(card
);
788 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
790 /* userspace can access us now we are back as we were before */
791 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
793 /* Recheck all analogue paths too */
794 dapm_mark_io_dirty(&card
->dapm
);
795 snd_soc_dapm_sync(&card
->dapm
);
798 /* powers up audio subsystem after a suspend */
799 int snd_soc_resume(struct device
*dev
)
801 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
802 int i
, ac97_control
= 0;
804 /* If the initialization of this soc device failed, there is no codec
805 * associated with it. Just bail out in this case.
807 if (list_empty(&card
->codec_dev_list
))
810 /* AC97 devices might have other drivers hanging off them so
811 * need to resume immediately. Other drivers don't have that
812 * problem and may take a substantial amount of time to resume
813 * due to I/O costs and anti-pop so handle them out of line.
815 for (i
= 0; i
< card
->num_rtd
; i
++) {
816 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
817 ac97_control
|= cpu_dai
->driver
->ac97_control
;
820 dev_dbg(dev
, "ASoC: Resuming AC97 immediately\n");
821 soc_resume_deferred(&card
->deferred_resume_work
);
823 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
824 if (!schedule_work(&card
->deferred_resume_work
))
825 dev_err(dev
, "ASoC: resume work item may be lost\n");
830 EXPORT_SYMBOL_GPL(snd_soc_resume
);
832 #define snd_soc_suspend NULL
833 #define snd_soc_resume NULL
836 static const struct snd_soc_dai_ops null_dai_ops
= {
839 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
841 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
842 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
843 struct snd_soc_codec
*codec
;
844 struct snd_soc_platform
*platform
;
845 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
846 const char *platform_name
;
848 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
850 /* Find CPU DAI from registered DAIs*/
851 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
852 if (dai_link
->cpu_of_node
&&
853 (cpu_dai
->dev
->of_node
!= dai_link
->cpu_of_node
))
855 if (dai_link
->cpu_name
&&
856 strcmp(dev_name(cpu_dai
->dev
), dai_link
->cpu_name
))
858 if (dai_link
->cpu_dai_name
&&
859 strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
862 rtd
->cpu_dai
= cpu_dai
;
866 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
867 dai_link
->cpu_dai_name
);
868 return -EPROBE_DEFER
;
871 /* Find CODEC from registered CODECs */
872 list_for_each_entry(codec
, &codec_list
, list
) {
873 if (dai_link
->codec_of_node
) {
874 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
877 if (strcmp(codec
->name
, dai_link
->codec_name
))
884 * CODEC found, so find CODEC DAI from registered DAIs from
887 list_for_each_entry(codec_dai
, &dai_list
, list
) {
888 if (codec
->dev
== codec_dai
->dev
&&
889 !strcmp(codec_dai
->name
,
890 dai_link
->codec_dai_name
)) {
892 rtd
->codec_dai
= codec_dai
;
896 if (!rtd
->codec_dai
) {
897 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
898 dai_link
->codec_dai_name
);
899 return -EPROBE_DEFER
;
904 dev_err(card
->dev
, "ASoC: CODEC %s not registered\n",
905 dai_link
->codec_name
);
906 return -EPROBE_DEFER
;
909 /* if there's no platform we match on the empty platform */
910 platform_name
= dai_link
->platform_name
;
911 if (!platform_name
&& !dai_link
->platform_of_node
)
912 platform_name
= "snd-soc-dummy";
914 /* find one from the set of registered platforms */
915 list_for_each_entry(platform
, &platform_list
, list
) {
916 if (dai_link
->platform_of_node
) {
917 if (platform
->dev
->of_node
!=
918 dai_link
->platform_of_node
)
921 if (strcmp(platform
->name
, platform_name
))
925 rtd
->platform
= platform
;
927 if (!rtd
->platform
) {
928 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
929 dai_link
->platform_name
);
930 return -EPROBE_DEFER
;
938 static int soc_remove_platform(struct snd_soc_platform
*platform
)
942 if (platform
->driver
->remove
) {
943 ret
= platform
->driver
->remove(platform
);
945 dev_err(platform
->dev
, "ASoC: failed to remove %d\n",
949 /* Make sure all DAPM widgets are freed */
950 snd_soc_dapm_free(&platform
->dapm
);
952 soc_cleanup_platform_debugfs(platform
);
953 platform
->probed
= 0;
954 list_del(&platform
->card_list
);
955 module_put(platform
->dev
->driver
->owner
);
960 static void soc_remove_codec(struct snd_soc_codec
*codec
)
964 if (codec
->driver
->remove
) {
965 err
= codec
->driver
->remove(codec
);
967 dev_err(codec
->dev
, "ASoC: failed to remove %d\n", err
);
970 /* Make sure all DAPM widgets are freed */
971 snd_soc_dapm_free(&codec
->dapm
);
973 soc_cleanup_codec_debugfs(codec
);
975 list_del(&codec
->card_list
);
976 module_put(codec
->dev
->driver
->owner
);
979 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
981 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
982 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
985 /* unregister the rtd device */
986 if (rtd
->dev_registered
) {
987 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
988 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
989 device_unregister(rtd
->dev
);
990 rtd
->dev_registered
= 0;
993 /* remove the CODEC DAI */
994 if (codec_dai
&& codec_dai
->probed
&&
995 codec_dai
->driver
->remove_order
== order
) {
996 if (codec_dai
->driver
->remove
) {
997 err
= codec_dai
->driver
->remove(codec_dai
);
999 dev_err(codec_dai
->dev
,
1000 "ASoC: failed to remove %s: %d\n",
1001 codec_dai
->name
, err
);
1003 codec_dai
->probed
= 0;
1004 list_del(&codec_dai
->card_list
);
1007 /* remove the cpu_dai */
1008 if (cpu_dai
&& cpu_dai
->probed
&&
1009 cpu_dai
->driver
->remove_order
== order
) {
1010 if (cpu_dai
->driver
->remove
) {
1011 err
= cpu_dai
->driver
->remove(cpu_dai
);
1013 dev_err(cpu_dai
->dev
,
1014 "ASoC: failed to remove %s: %d\n",
1015 cpu_dai
->name
, err
);
1017 cpu_dai
->probed
= 0;
1018 list_del(&cpu_dai
->card_list
);
1020 if (!cpu_dai
->codec
) {
1021 snd_soc_dapm_free(&cpu_dai
->dapm
);
1022 module_put(cpu_dai
->dev
->driver
->owner
);
1027 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1030 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1031 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1032 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1033 struct snd_soc_platform
*platform
= rtd
->platform
;
1034 struct snd_soc_codec
*codec
;
1036 /* remove the platform */
1037 if (platform
&& platform
->probed
&&
1038 platform
->driver
->remove_order
== order
) {
1039 soc_remove_platform(platform
);
1042 /* remove the CODEC-side CODEC */
1044 codec
= codec_dai
->codec
;
1045 if (codec
&& codec
->probed
&&
1046 codec
->driver
->remove_order
== order
)
1047 soc_remove_codec(codec
);
1050 /* remove any CPU-side CODEC */
1052 codec
= cpu_dai
->codec
;
1053 if (codec
&& codec
->probed
&&
1054 codec
->driver
->remove_order
== order
)
1055 soc_remove_codec(codec
);
1059 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1063 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1065 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1066 soc_remove_link_dais(card
, dai
, order
);
1069 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1071 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1072 soc_remove_link_components(card
, dai
, order
);
1078 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1079 struct snd_soc_codec
*codec
)
1083 if (card
->codec_conf
== NULL
)
1086 for (i
= 0; i
< card
->num_configs
; i
++) {
1087 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1088 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1089 codec
->name_prefix
= map
->name_prefix
;
1095 static int soc_probe_codec(struct snd_soc_card
*card
,
1096 struct snd_soc_codec
*codec
)
1099 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1100 struct snd_soc_dai
*dai
;
1103 codec
->dapm
.card
= card
;
1104 soc_set_name_prefix(card
, codec
);
1106 if (!try_module_get(codec
->dev
->driver
->owner
))
1109 soc_init_codec_debugfs(codec
);
1111 if (driver
->dapm_widgets
)
1112 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1113 driver
->num_dapm_widgets
);
1115 /* Create DAPM widgets for each DAI stream */
1116 list_for_each_entry(dai
, &dai_list
, list
) {
1117 if (dai
->dev
!= codec
->dev
)
1120 snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1123 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1125 if (driver
->probe
) {
1126 ret
= driver
->probe(codec
);
1129 "ASoC: failed to probe CODEC %d\n", ret
);
1132 WARN(codec
->dapm
.idle_bias_off
&&
1133 codec
->dapm
.bias_level
!= SND_SOC_BIAS_OFF
,
1134 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1138 /* If the driver didn't set I/O up try regmap */
1139 if (!codec
->write
&& dev_get_regmap(codec
->dev
, NULL
))
1140 snd_soc_codec_set_cache_io(codec
, 0, 0, SND_SOC_REGMAP
);
1142 if (driver
->controls
)
1143 snd_soc_add_codec_controls(codec
, driver
->controls
,
1144 driver
->num_controls
);
1145 if (driver
->dapm_routes
)
1146 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1147 driver
->num_dapm_routes
);
1149 /* mark codec as probed and add to card codec list */
1151 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1152 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1157 soc_cleanup_codec_debugfs(codec
);
1158 module_put(codec
->dev
->driver
->owner
);
1163 static int soc_probe_platform(struct snd_soc_card
*card
,
1164 struct snd_soc_platform
*platform
)
1167 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1168 struct snd_soc_dai
*dai
;
1170 platform
->card
= card
;
1171 platform
->dapm
.card
= card
;
1173 if (!try_module_get(platform
->dev
->driver
->owner
))
1176 soc_init_platform_debugfs(platform
);
1178 if (driver
->dapm_widgets
)
1179 snd_soc_dapm_new_controls(&platform
->dapm
,
1180 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1182 /* Create DAPM widgets for each DAI stream */
1183 list_for_each_entry(dai
, &dai_list
, list
) {
1184 if (dai
->dev
!= platform
->dev
)
1187 snd_soc_dapm_new_dai_widgets(&platform
->dapm
, dai
);
1190 platform
->dapm
.idle_bias_off
= 1;
1192 if (driver
->probe
) {
1193 ret
= driver
->probe(platform
);
1195 dev_err(platform
->dev
,
1196 "ASoC: failed to probe platform %d\n", ret
);
1201 if (driver
->controls
)
1202 snd_soc_add_platform_controls(platform
, driver
->controls
,
1203 driver
->num_controls
);
1204 if (driver
->dapm_routes
)
1205 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1206 driver
->num_dapm_routes
);
1208 /* mark platform as probed and add to card platform list */
1209 platform
->probed
= 1;
1210 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1211 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1216 soc_cleanup_platform_debugfs(platform
);
1217 module_put(platform
->dev
->driver
->owner
);
1222 static void rtd_release(struct device
*dev
)
1227 static int soc_post_component_init(struct snd_soc_card
*card
,
1228 struct snd_soc_codec
*codec
,
1229 int num
, int dailess
)
1231 struct snd_soc_dai_link
*dai_link
= NULL
;
1232 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1233 struct snd_soc_pcm_runtime
*rtd
;
1234 const char *temp
, *name
;
1238 dai_link
= &card
->dai_link
[num
];
1239 rtd
= &card
->rtd
[num
];
1240 name
= dai_link
->name
;
1242 aux_dev
= &card
->aux_dev
[num
];
1243 rtd
= &card
->rtd_aux
[num
];
1244 name
= aux_dev
->name
;
1248 /* machine controls, routes and widgets are not prefixed */
1249 temp
= codec
->name_prefix
;
1250 codec
->name_prefix
= NULL
;
1252 /* do machine specific initialization */
1253 if (!dailess
&& dai_link
->init
)
1254 ret
= dai_link
->init(rtd
);
1255 else if (dailess
&& aux_dev
->init
)
1256 ret
= aux_dev
->init(&codec
->dapm
);
1258 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n", name
, ret
);
1261 codec
->name_prefix
= temp
;
1263 /* register the rtd device */
1266 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1269 device_initialize(rtd
->dev
);
1270 rtd
->dev
->parent
= card
->dev
;
1271 rtd
->dev
->release
= rtd_release
;
1272 rtd
->dev
->init_name
= name
;
1273 dev_set_drvdata(rtd
->dev
, rtd
);
1274 mutex_init(&rtd
->pcm_mutex
);
1275 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1276 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1277 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1278 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1279 ret
= device_add(rtd
->dev
);
1281 /* calling put_device() here to free the rtd->dev */
1282 put_device(rtd
->dev
);
1284 "ASoC: failed to register runtime device: %d\n", ret
);
1287 rtd
->dev_registered
= 1;
1289 /* add DAPM sysfs entries for this codec */
1290 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1293 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret
);
1295 /* add codec sysfs entries */
1296 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1299 "ASoC: failed to add codec sysfs files: %d\n", ret
);
1301 #ifdef CONFIG_DEBUG_FS
1302 /* add DPCM sysfs entries */
1303 if (!dailess
&& !dai_link
->dynamic
)
1306 ret
= soc_dpcm_debugfs_add(rtd
);
1308 dev_err(rtd
->dev
, "ASoC: failed to add dpcm sysfs entries: %d\n", ret
);
1315 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1318 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1319 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1320 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1321 struct snd_soc_platform
*platform
= rtd
->platform
;
1324 /* probe the CPU-side component, if it is a CODEC */
1325 if (cpu_dai
->codec
&&
1326 !cpu_dai
->codec
->probed
&&
1327 cpu_dai
->codec
->driver
->probe_order
== order
) {
1328 ret
= soc_probe_codec(card
, cpu_dai
->codec
);
1333 /* probe the CODEC-side component */
1334 if (!codec_dai
->codec
->probed
&&
1335 codec_dai
->codec
->driver
->probe_order
== order
) {
1336 ret
= soc_probe_codec(card
, codec_dai
->codec
);
1341 /* probe the platform */
1342 if (!platform
->probed
&&
1343 platform
->driver
->probe_order
== order
) {
1344 ret
= soc_probe_platform(card
, platform
);
1352 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1354 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1355 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1356 struct snd_soc_codec
*codec
= rtd
->codec
;
1357 struct snd_soc_platform
*platform
= rtd
->platform
;
1358 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1359 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1360 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1363 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1364 card
->name
, num
, order
);
1366 /* config components */
1367 cpu_dai
->platform
= platform
;
1368 codec_dai
->card
= card
;
1369 cpu_dai
->card
= card
;
1371 /* set default power off timeout */
1372 rtd
->pmdown_time
= pmdown_time
;
1374 /* probe the cpu_dai */
1375 if (!cpu_dai
->probed
&&
1376 cpu_dai
->driver
->probe_order
== order
) {
1377 if (!cpu_dai
->codec
) {
1378 cpu_dai
->dapm
.card
= card
;
1379 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1382 list_add(&cpu_dai
->dapm
.list
, &card
->dapm_list
);
1383 snd_soc_dapm_new_dai_widgets(&cpu_dai
->dapm
, cpu_dai
);
1386 if (cpu_dai
->driver
->probe
) {
1387 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1389 dev_err(cpu_dai
->dev
,
1390 "ASoC: failed to probe CPU DAI %s: %d\n",
1391 cpu_dai
->name
, ret
);
1392 module_put(cpu_dai
->dev
->driver
->owner
);
1396 cpu_dai
->probed
= 1;
1397 /* mark cpu_dai as probed and add to card dai list */
1398 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1401 /* probe the CODEC DAI */
1402 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1403 if (codec_dai
->driver
->probe
) {
1404 ret
= codec_dai
->driver
->probe(codec_dai
);
1406 dev_err(codec_dai
->dev
,
1407 "ASoC: failed to probe CODEC DAI %s: %d\n",
1408 codec_dai
->name
, ret
);
1413 /* mark codec_dai as probed and add to card dai list */
1414 codec_dai
->probed
= 1;
1415 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1418 /* complete DAI probe during last probe */
1419 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1422 ret
= soc_post_component_init(card
, codec
, num
, 0);
1426 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1428 dev_warn(rtd
->dev
, "ASoC: failed to add pmdown_time sysfs: %d\n",
1431 if (cpu_dai
->driver
->compress_dai
) {
1432 /*create compress_device"*/
1433 ret
= soc_new_compress(rtd
, num
);
1435 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1436 dai_link
->stream_name
);
1441 if (!dai_link
->params
) {
1442 /* create the pcm */
1443 ret
= soc_new_pcm(rtd
, num
);
1445 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1446 dai_link
->stream_name
, ret
);
1450 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1451 codec2codec_close_delayed_work
);
1453 /* link the DAI widgets */
1454 play_w
= codec_dai
->playback_widget
;
1455 capture_w
= cpu_dai
->capture_widget
;
1456 if (play_w
&& capture_w
) {
1457 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1460 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1461 play_w
->name
, capture_w
->name
, ret
);
1466 play_w
= cpu_dai
->playback_widget
;
1467 capture_w
= codec_dai
->capture_widget
;
1468 if (play_w
&& capture_w
) {
1469 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1472 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1473 play_w
->name
, capture_w
->name
, ret
);
1480 /* add platform data for AC97 devices */
1481 if (rtd
->codec_dai
->driver
->ac97_control
)
1482 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1487 #ifdef CONFIG_SND_SOC_AC97_BUS
1488 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1492 /* Only instantiate AC97 if not already done by the adaptor
1493 * for the generic AC97 subsystem.
1495 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1497 * It is possible that the AC97 device is already registered to
1498 * the device subsystem. This happens when the device is created
1499 * via snd_ac97_mixer(). Currently only SoC codec that does so
1500 * is the generic AC97 glue but others migh emerge.
1502 * In those cases we don't try to register the device again.
1504 if (!rtd
->codec
->ac97_created
)
1507 ret
= soc_ac97_dev_register(rtd
->codec
);
1509 dev_err(rtd
->codec
->dev
,
1510 "ASoC: AC97 device register failed: %d\n", ret
);
1514 rtd
->codec
->ac97_registered
= 1;
1519 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1521 if (codec
->ac97_registered
) {
1522 soc_ac97_dev_unregister(codec
);
1523 codec
->ac97_registered
= 0;
1528 static int soc_check_aux_dev(struct snd_soc_card
*card
, int num
)
1530 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1531 struct snd_soc_codec
*codec
;
1533 /* find CODEC from registered CODECs*/
1534 list_for_each_entry(codec
, &codec_list
, list
) {
1535 if (!strcmp(codec
->name
, aux_dev
->codec_name
))
1539 dev_err(card
->dev
, "ASoC: %s not registered\n", aux_dev
->codec_name
);
1541 return -EPROBE_DEFER
;
1544 static int soc_probe_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
;
1550 /* find CODEC from registered CODECs*/
1551 list_for_each_entry(codec
, &codec_list
, list
) {
1552 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1553 if (codec
->probed
) {
1555 "ASoC: codec already probed");
1562 /* codec not found */
1563 dev_err(card
->dev
, "ASoC: codec %s not found", aux_dev
->codec_name
);
1564 return -EPROBE_DEFER
;
1567 ret
= soc_probe_codec(card
, codec
);
1571 ret
= soc_post_component_init(card
, codec
, num
, 1);
1577 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1579 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1580 struct snd_soc_codec
*codec
= rtd
->codec
;
1582 /* unregister the rtd device */
1583 if (rtd
->dev_registered
) {
1584 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1585 device_unregister(rtd
->dev
);
1586 rtd
->dev_registered
= 0;
1589 if (codec
&& codec
->probed
)
1590 soc_remove_codec(codec
);
1593 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1594 enum snd_soc_compress_type compress_type
)
1598 if (codec
->cache_init
)
1601 /* override the compress_type if necessary */
1602 if (compress_type
&& codec
->compress_type
!= compress_type
)
1603 codec
->compress_type
= compress_type
;
1604 ret
= snd_soc_cache_init(codec
);
1607 "ASoC: Failed to set cache compression type: %d\n",
1611 codec
->cache_init
= 1;
1615 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1617 struct snd_soc_codec
*codec
;
1618 struct snd_soc_codec_conf
*codec_conf
;
1619 enum snd_soc_compress_type compress_type
;
1620 struct snd_soc_dai_link
*dai_link
;
1621 int ret
, i
, order
, dai_fmt
;
1623 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1626 for (i
= 0; i
< card
->num_links
; i
++) {
1627 ret
= soc_bind_dai_link(card
, i
);
1632 /* check aux_devs too */
1633 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1634 ret
= soc_check_aux_dev(card
, i
);
1639 /* initialize the register cache for each available codec */
1640 list_for_each_entry(codec
, &codec_list
, list
) {
1641 if (codec
->cache_init
)
1643 /* by default we don't override the compress_type */
1645 /* check to see if we need to override the compress_type */
1646 for (i
= 0; i
< card
->num_configs
; ++i
) {
1647 codec_conf
= &card
->codec_conf
[i
];
1648 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1649 compress_type
= codec_conf
->compress_type
;
1650 if (compress_type
&& compress_type
1651 != codec
->compress_type
)
1655 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1660 /* card bind complete so register a sound card */
1661 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1662 card
->owner
, 0, &card
->snd_card
);
1665 "ASoC: can't create sound card for card %s: %d\n",
1669 card
->snd_card
->dev
= card
->dev
;
1671 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1672 card
->dapm
.dev
= card
->dev
;
1673 card
->dapm
.card
= card
;
1674 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1676 #ifdef CONFIG_DEBUG_FS
1677 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1680 #ifdef CONFIG_PM_SLEEP
1681 /* deferred resume work */
1682 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1685 if (card
->dapm_widgets
)
1686 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1687 card
->num_dapm_widgets
);
1689 /* initialise the sound card only once */
1691 ret
= card
->probe(card
);
1693 goto card_probe_error
;
1696 /* probe all components used by DAI links on this card */
1697 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1699 for (i
= 0; i
< card
->num_links
; i
++) {
1700 ret
= soc_probe_link_components(card
, i
, order
);
1703 "ASoC: failed to instantiate card %d\n",
1710 /* probe all DAI links on this card */
1711 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1713 for (i
= 0; i
< card
->num_links
; i
++) {
1714 ret
= soc_probe_link_dais(card
, i
, order
);
1717 "ASoC: failed to instantiate card %d\n",
1724 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1725 ret
= soc_probe_aux_dev(card
, i
);
1728 "ASoC: failed to add auxiliary devices %d\n",
1730 goto probe_aux_dev_err
;
1734 snd_soc_dapm_link_dai_widgets(card
);
1737 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1739 if (card
->dapm_routes
)
1740 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1741 card
->num_dapm_routes
);
1743 for (i
= 0; i
< card
->num_links
; i
++) {
1744 dai_link
= &card
->dai_link
[i
];
1745 dai_fmt
= dai_link
->dai_fmt
;
1748 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1750 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1751 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1752 "ASoC: Failed to set DAI format: %d\n",
1756 /* If this is a regular CPU link there will be a platform */
1758 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1759 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1761 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1762 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1763 "ASoC: Failed to set DAI format: %d\n",
1765 } else if (dai_fmt
) {
1766 /* Flip the polarity for the "CPU" end */
1767 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1768 switch (dai_link
->dai_fmt
&
1769 SND_SOC_DAIFMT_MASTER_MASK
) {
1770 case SND_SOC_DAIFMT_CBM_CFM
:
1771 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1773 case SND_SOC_DAIFMT_CBM_CFS
:
1774 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1776 case SND_SOC_DAIFMT_CBS_CFM
:
1777 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1779 case SND_SOC_DAIFMT_CBS_CFS
:
1780 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1784 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1786 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1787 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1788 "ASoC: Failed to set DAI format: %d\n",
1793 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1795 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1796 "%s", card
->long_name
? card
->long_name
: card
->name
);
1797 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1798 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1799 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1800 switch (card
->snd_card
->driver
[i
]) {
1806 if (!isalnum(card
->snd_card
->driver
[i
]))
1807 card
->snd_card
->driver
[i
] = '_';
1812 if (card
->late_probe
) {
1813 ret
= card
->late_probe(card
);
1815 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1817 goto probe_aux_dev_err
;
1821 if (card
->fully_routed
)
1822 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1823 snd_soc_dapm_auto_nc_codec_pins(codec
);
1825 snd_soc_dapm_new_widgets(card
);
1827 ret
= snd_card_register(card
->snd_card
);
1829 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1831 goto probe_aux_dev_err
;
1834 #ifdef CONFIG_SND_SOC_AC97_BUS
1835 /* register any AC97 codecs */
1836 for (i
= 0; i
< card
->num_rtd
; i
++) {
1837 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1840 "ASoC: failed to register AC97: %d\n", ret
);
1842 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1843 goto probe_aux_dev_err
;
1848 card
->instantiated
= 1;
1849 snd_soc_dapm_sync(&card
->dapm
);
1850 mutex_unlock(&card
->mutex
);
1855 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1856 soc_remove_aux_dev(card
, i
);
1859 soc_remove_dai_links(card
);
1865 snd_card_free(card
->snd_card
);
1868 mutex_unlock(&card
->mutex
);
1873 /* probes a new socdev */
1874 static int soc_probe(struct platform_device
*pdev
)
1876 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1879 * no card, so machine driver should be registering card
1880 * we should not be here in that case so ret error
1885 dev_warn(&pdev
->dev
,
1886 "ASoC: machine %s should use snd_soc_register_card()\n",
1889 /* Bodge while we unpick instantiation */
1890 card
->dev
= &pdev
->dev
;
1892 return snd_soc_register_card(card
);
1895 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1899 /* make sure any delayed work runs */
1900 for (i
= 0; i
< card
->num_rtd
; i
++) {
1901 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1902 flush_delayed_work(&rtd
->delayed_work
);
1905 /* remove auxiliary devices */
1906 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1907 soc_remove_aux_dev(card
, i
);
1909 /* remove and free each DAI */
1910 soc_remove_dai_links(card
);
1912 soc_cleanup_card_debugfs(card
);
1914 /* remove the card */
1918 snd_soc_dapm_free(&card
->dapm
);
1920 snd_card_free(card
->snd_card
);
1925 /* removes a socdev */
1926 static int soc_remove(struct platform_device
*pdev
)
1928 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1930 snd_soc_unregister_card(card
);
1934 int snd_soc_poweroff(struct device
*dev
)
1936 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1939 if (!card
->instantiated
)
1942 /* Flush out pmdown_time work - we actually do want to run it
1943 * now, we're shutting down so no imminent restart. */
1944 for (i
= 0; i
< card
->num_rtd
; i
++) {
1945 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1946 flush_delayed_work(&rtd
->delayed_work
);
1949 snd_soc_dapm_shutdown(card
);
1953 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1955 const struct dev_pm_ops snd_soc_pm_ops
= {
1956 .suspend
= snd_soc_suspend
,
1957 .resume
= snd_soc_resume
,
1958 .freeze
= snd_soc_suspend
,
1959 .thaw
= snd_soc_resume
,
1960 .poweroff
= snd_soc_poweroff
,
1961 .restore
= snd_soc_resume
,
1963 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1965 /* ASoC platform driver */
1966 static struct platform_driver soc_driver
= {
1968 .name
= "soc-audio",
1969 .owner
= THIS_MODULE
,
1970 .pm
= &snd_soc_pm_ops
,
1973 .remove
= soc_remove
,
1977 * snd_soc_codec_volatile_register: Report if a register is volatile.
1979 * @codec: CODEC to query.
1980 * @reg: Register to query.
1982 * Boolean function indiciating if a CODEC register is volatile.
1984 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1987 if (codec
->volatile_register
)
1988 return codec
->volatile_register(codec
, reg
);
1992 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1995 * snd_soc_codec_readable_register: Report if a register is readable.
1997 * @codec: CODEC to query.
1998 * @reg: Register to query.
2000 * Boolean function indicating if a CODEC register is readable.
2002 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
2005 if (codec
->readable_register
)
2006 return codec
->readable_register(codec
, reg
);
2010 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
2013 * snd_soc_codec_writable_register: Report if a register is writable.
2015 * @codec: CODEC to query.
2016 * @reg: Register to query.
2018 * Boolean function indicating if a CODEC register is writable.
2020 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
2023 if (codec
->writable_register
)
2024 return codec
->writable_register(codec
, reg
);
2028 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
2030 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
2035 if (!platform
->driver
->read
) {
2036 dev_err(platform
->dev
, "ASoC: platform has no read back\n");
2040 ret
= platform
->driver
->read(platform
, reg
);
2041 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
2042 trace_snd_soc_preg_read(platform
, reg
, ret
);
2046 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
2048 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
2049 unsigned int reg
, unsigned int val
)
2051 if (!platform
->driver
->write
) {
2052 dev_err(platform
->dev
, "ASoC: platform has no write back\n");
2056 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
2057 trace_snd_soc_preg_write(platform
, reg
, val
);
2058 return platform
->driver
->write(platform
, reg
, val
);
2060 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
2063 * snd_soc_new_ac97_codec - initailise AC97 device
2064 * @codec: audio codec
2065 * @ops: AC97 bus operations
2066 * @num: AC97 codec number
2068 * Initialises AC97 codec resources for use by ad-hoc devices only.
2070 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2071 struct snd_ac97_bus_ops
*ops
, int num
)
2073 mutex_lock(&codec
->mutex
);
2075 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2076 if (codec
->ac97
== NULL
) {
2077 mutex_unlock(&codec
->mutex
);
2081 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2082 if (codec
->ac97
->bus
== NULL
) {
2085 mutex_unlock(&codec
->mutex
);
2089 codec
->ac97
->bus
->ops
= ops
;
2090 codec
->ac97
->num
= num
;
2093 * Mark the AC97 device to be created by us. This way we ensure that the
2094 * device will be registered with the device subsystem later on.
2096 codec
->ac97_created
= 1;
2098 mutex_unlock(&codec
->mutex
);
2101 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2103 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg
;
2105 static void snd_soc_ac97_warm_reset(struct snd_ac97
*ac97
)
2107 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2109 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_warm_reset
);
2111 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 1);
2115 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2117 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2121 static void snd_soc_ac97_reset(struct snd_ac97
*ac97
)
2123 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2125 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_reset
);
2127 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2128 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sdata
, 0);
2129 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 0);
2133 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 1);
2135 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2139 static int snd_soc_ac97_parse_pinctl(struct device
*dev
,
2140 struct snd_ac97_reset_cfg
*cfg
)
2143 struct pinctrl_state
*state
;
2147 p
= devm_pinctrl_get(dev
);
2149 dev_err(dev
, "Failed to get pinctrl\n");
2154 state
= pinctrl_lookup_state(p
, "ac97-reset");
2155 if (IS_ERR(state
)) {
2156 dev_err(dev
, "Can't find pinctrl state ac97-reset\n");
2157 return PTR_RET(state
);
2159 cfg
->pstate_reset
= state
;
2161 state
= pinctrl_lookup_state(p
, "ac97-warm-reset");
2162 if (IS_ERR(state
)) {
2163 dev_err(dev
, "Can't find pinctrl state ac97-warm-reset\n");
2164 return PTR_RET(state
);
2166 cfg
->pstate_warm_reset
= state
;
2168 state
= pinctrl_lookup_state(p
, "ac97-running");
2169 if (IS_ERR(state
)) {
2170 dev_err(dev
, "Can't find pinctrl state ac97-running\n");
2171 return PTR_RET(state
);
2173 cfg
->pstate_run
= state
;
2175 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 0);
2177 dev_err(dev
, "Can't find ac97-sync gpio\n");
2180 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sync");
2182 dev_err(dev
, "Failed requesting ac97-sync gpio\n");
2185 cfg
->gpio_sync
= gpio
;
2187 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 1);
2189 dev_err(dev
, "Can't find ac97-sdata gpio %d\n", gpio
);
2192 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sdata");
2194 dev_err(dev
, "Failed requesting ac97-sdata gpio\n");
2197 cfg
->gpio_sdata
= gpio
;
2199 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 2);
2201 dev_err(dev
, "Can't find ac97-reset gpio\n");
2204 ret
= devm_gpio_request(dev
, gpio
, "AC97 link reset");
2206 dev_err(dev
, "Failed requesting ac97-reset gpio\n");
2209 cfg
->gpio_reset
= gpio
;
2214 struct snd_ac97_bus_ops
*soc_ac97_ops
;
2215 EXPORT_SYMBOL_GPL(soc_ac97_ops
);
2217 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops
*ops
)
2219 if (ops
== soc_ac97_ops
)
2222 if (soc_ac97_ops
&& ops
)
2229 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops
);
2232 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2234 * This function sets the reset and warm_reset properties of ops and parses
2235 * the device node of pdev to get pinctrl states and gpio numbers to use.
2237 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops
*ops
,
2238 struct platform_device
*pdev
)
2240 struct device
*dev
= &pdev
->dev
;
2241 struct snd_ac97_reset_cfg cfg
;
2244 ret
= snd_soc_ac97_parse_pinctl(dev
, &cfg
);
2248 ret
= snd_soc_set_ac97_ops(ops
);
2252 ops
->warm_reset
= snd_soc_ac97_warm_reset
;
2253 ops
->reset
= snd_soc_ac97_reset
;
2255 snd_ac97_rst_cfg
= cfg
;
2258 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset
);
2261 * snd_soc_free_ac97_codec - free AC97 codec device
2262 * @codec: audio codec
2264 * Frees AC97 codec device resources.
2266 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2268 mutex_lock(&codec
->mutex
);
2269 #ifdef CONFIG_SND_SOC_AC97_BUS
2270 soc_unregister_ac97_dai_link(codec
);
2272 kfree(codec
->ac97
->bus
);
2275 codec
->ac97_created
= 0;
2276 mutex_unlock(&codec
->mutex
);
2278 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2280 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2284 ret
= codec
->read(codec
, reg
);
2285 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2286 trace_snd_soc_reg_read(codec
, reg
, ret
);
2290 EXPORT_SYMBOL_GPL(snd_soc_read
);
2292 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2293 unsigned int reg
, unsigned int val
)
2295 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2296 trace_snd_soc_reg_write(codec
, reg
, val
);
2297 return codec
->write(codec
, reg
, val
);
2299 EXPORT_SYMBOL_GPL(snd_soc_write
);
2301 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2302 unsigned int reg
, const void *data
, size_t len
)
2304 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2306 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2309 * snd_soc_update_bits - update codec register bits
2310 * @codec: audio codec
2311 * @reg: codec register
2312 * @mask: register mask
2315 * Writes new register value.
2317 * Returns 1 for change, 0 for no change, or negative error code.
2319 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2320 unsigned int mask
, unsigned int value
)
2323 unsigned int old
, new;
2326 if (codec
->using_regmap
) {
2327 ret
= regmap_update_bits_check(codec
->control_data
, reg
,
2328 mask
, value
, &change
);
2330 ret
= snd_soc_read(codec
, reg
);
2335 new = (old
& ~mask
) | (value
& mask
);
2336 change
= old
!= new;
2338 ret
= snd_soc_write(codec
, reg
, new);
2346 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2349 * snd_soc_update_bits_locked - update codec register bits
2350 * @codec: audio codec
2351 * @reg: codec register
2352 * @mask: register mask
2355 * Writes new register value, and takes the codec mutex.
2357 * Returns 1 for change else 0.
2359 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2360 unsigned short reg
, unsigned int mask
,
2365 mutex_lock(&codec
->mutex
);
2366 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2367 mutex_unlock(&codec
->mutex
);
2371 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2374 * snd_soc_test_bits - test register for change
2375 * @codec: audio codec
2376 * @reg: codec register
2377 * @mask: register mask
2380 * Tests a register with a new value and checks if the new value is
2381 * different from the old value.
2383 * Returns 1 for change else 0.
2385 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2386 unsigned int mask
, unsigned int value
)
2389 unsigned int old
, new;
2391 old
= snd_soc_read(codec
, reg
);
2392 new = (old
& ~mask
) | value
;
2393 change
= old
!= new;
2397 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2400 * snd_soc_cnew - create new control
2401 * @_template: control template
2402 * @data: control private data
2403 * @long_name: control long name
2404 * @prefix: control name prefix
2406 * Create a new mixer control from a template control.
2408 * Returns 0 for success, else error.
2410 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2411 void *data
, const char *long_name
,
2414 struct snd_kcontrol_new
template;
2415 struct snd_kcontrol
*kcontrol
;
2418 memcpy(&template, _template
, sizeof(template));
2422 long_name
= template.name
;
2425 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2429 template.name
= name
;
2431 template.name
= long_name
;
2434 kcontrol
= snd_ctl_new1(&template, data
);
2440 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2442 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2443 const struct snd_kcontrol_new
*controls
, int num_controls
,
2444 const char *prefix
, void *data
)
2448 for (i
= 0; i
< num_controls
; i
++) {
2449 const struct snd_kcontrol_new
*control
= &controls
[i
];
2450 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2451 control
->name
, prefix
));
2453 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2454 control
->name
, err
);
2462 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2465 struct snd_card
*card
= soc_card
->snd_card
;
2466 struct snd_kcontrol
*kctl
;
2468 if (unlikely(!name
))
2471 list_for_each_entry(kctl
, &card
->controls
, list
)
2472 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2476 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2479 * snd_soc_add_codec_controls - add an array of controls to a codec.
2480 * Convenience function to add a list of controls. Many codecs were
2481 * duplicating this code.
2483 * @codec: codec to add controls to
2484 * @controls: array of controls to add
2485 * @num_controls: number of elements in the array
2487 * Return 0 for success, else error.
2489 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2490 const struct snd_kcontrol_new
*controls
, int num_controls
)
2492 struct snd_card
*card
= codec
->card
->snd_card
;
2494 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2495 codec
->name_prefix
, codec
);
2497 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2500 * snd_soc_add_platform_controls - add an array of controls to a platform.
2501 * Convenience function to add a list of controls.
2503 * @platform: platform to add controls to
2504 * @controls: array of controls to add
2505 * @num_controls: number of elements in the array
2507 * Return 0 for success, else error.
2509 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2510 const struct snd_kcontrol_new
*controls
, int num_controls
)
2512 struct snd_card
*card
= platform
->card
->snd_card
;
2514 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2517 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2520 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2521 * Convenience function to add a list of controls.
2523 * @soc_card: SoC card to add controls to
2524 * @controls: array of controls to add
2525 * @num_controls: number of elements in the array
2527 * Return 0 for success, else error.
2529 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2530 const struct snd_kcontrol_new
*controls
, int num_controls
)
2532 struct snd_card
*card
= soc_card
->snd_card
;
2534 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2537 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2540 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2541 * Convienience function to add a list of controls.
2543 * @dai: DAI to add controls to
2544 * @controls: array of controls to add
2545 * @num_controls: number of elements in the array
2547 * Return 0 for success, else error.
2549 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2550 const struct snd_kcontrol_new
*controls
, int num_controls
)
2552 struct snd_card
*card
= dai
->card
->snd_card
;
2554 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2557 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2560 * snd_soc_info_enum_double - enumerated double mixer info callback
2561 * @kcontrol: mixer control
2562 * @uinfo: control element information
2564 * Callback to provide information about a double enumerated
2567 * Returns 0 for success.
2569 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2570 struct snd_ctl_elem_info
*uinfo
)
2572 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2574 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2575 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2576 uinfo
->value
.enumerated
.items
= e
->max
;
2578 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2579 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2580 strcpy(uinfo
->value
.enumerated
.name
,
2581 e
->texts
[uinfo
->value
.enumerated
.item
]);
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
;
2602 val
= snd_soc_read(codec
, e
->reg
);
2603 ucontrol
->value
.enumerated
.item
[0]
2604 = (val
>> e
->shift_l
) & e
->mask
;
2605 if (e
->shift_l
!= e
->shift_r
)
2606 ucontrol
->value
.enumerated
.item
[1] =
2607 (val
>> e
->shift_r
) & e
->mask
;
2611 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2614 * snd_soc_put_enum_double - enumerated double mixer put callback
2615 * @kcontrol: mixer control
2616 * @ucontrol: control element information
2618 * Callback to set the value of a double enumerated mixer.
2620 * Returns 0 for success.
2622 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2623 struct snd_ctl_elem_value
*ucontrol
)
2625 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2626 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2630 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2632 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2633 mask
= e
->mask
<< e
->shift_l
;
2634 if (e
->shift_l
!= e
->shift_r
) {
2635 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2637 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2638 mask
|= e
->mask
<< e
->shift_r
;
2641 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2643 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2646 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2647 * @kcontrol: mixer control
2648 * @ucontrol: control element information
2650 * Callback to get the value of a double semi enumerated mixer.
2652 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2653 * used for handling bitfield coded enumeration for example.
2655 * Returns 0 for success.
2657 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2658 struct snd_ctl_elem_value
*ucontrol
)
2660 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2661 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2662 unsigned int reg_val
, val
, mux
;
2664 reg_val
= snd_soc_read(codec
, e
->reg
);
2665 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2666 for (mux
= 0; mux
< e
->max
; mux
++) {
2667 if (val
== e
->values
[mux
])
2670 ucontrol
->value
.enumerated
.item
[0] = mux
;
2671 if (e
->shift_l
!= e
->shift_r
) {
2672 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2673 for (mux
= 0; mux
< e
->max
; mux
++) {
2674 if (val
== e
->values
[mux
])
2677 ucontrol
->value
.enumerated
.item
[1] = mux
;
2682 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2685 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2686 * @kcontrol: mixer control
2687 * @ucontrol: control element information
2689 * Callback to set the value of a double semi enumerated mixer.
2691 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2692 * used for handling bitfield coded enumeration for example.
2694 * Returns 0 for success.
2696 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2697 struct snd_ctl_elem_value
*ucontrol
)
2699 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2700 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2704 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2706 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2707 mask
= e
->mask
<< e
->shift_l
;
2708 if (e
->shift_l
!= e
->shift_r
) {
2709 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2711 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2712 mask
|= e
->mask
<< e
->shift_r
;
2715 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2717 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2720 * snd_soc_info_volsw - single mixer info callback
2721 * @kcontrol: mixer control
2722 * @uinfo: control element information
2724 * Callback to provide information about a single mixer control, or a double
2725 * mixer control that spans 2 registers.
2727 * Returns 0 for success.
2729 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2730 struct snd_ctl_elem_info
*uinfo
)
2732 struct soc_mixer_control
*mc
=
2733 (struct soc_mixer_control
*)kcontrol
->private_value
;
2736 if (!mc
->platform_max
)
2737 mc
->platform_max
= mc
->max
;
2738 platform_max
= mc
->platform_max
;
2740 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2741 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2743 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2745 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2746 uinfo
->value
.integer
.min
= 0;
2747 uinfo
->value
.integer
.max
= platform_max
;
2750 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2753 * snd_soc_get_volsw - single mixer get callback
2754 * @kcontrol: mixer control
2755 * @ucontrol: control element information
2757 * Callback to get the value of a single mixer control, or a double mixer
2758 * control that spans 2 registers.
2760 * Returns 0 for success.
2762 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2763 struct snd_ctl_elem_value
*ucontrol
)
2765 struct soc_mixer_control
*mc
=
2766 (struct soc_mixer_control
*)kcontrol
->private_value
;
2767 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2768 unsigned int reg
= mc
->reg
;
2769 unsigned int reg2
= mc
->rreg
;
2770 unsigned int shift
= mc
->shift
;
2771 unsigned int rshift
= mc
->rshift
;
2773 unsigned int mask
= (1 << fls(max
)) - 1;
2774 unsigned int invert
= mc
->invert
;
2776 ucontrol
->value
.integer
.value
[0] =
2777 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2779 ucontrol
->value
.integer
.value
[0] =
2780 max
- ucontrol
->value
.integer
.value
[0];
2782 if (snd_soc_volsw_is_stereo(mc
)) {
2784 ucontrol
->value
.integer
.value
[1] =
2785 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2787 ucontrol
->value
.integer
.value
[1] =
2788 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2790 ucontrol
->value
.integer
.value
[1] =
2791 max
- ucontrol
->value
.integer
.value
[1];
2796 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2799 * snd_soc_put_volsw - single mixer put callback
2800 * @kcontrol: mixer control
2801 * @ucontrol: control element information
2803 * Callback to set the value of a single mixer control, or a double mixer
2804 * control that spans 2 registers.
2806 * Returns 0 for success.
2808 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2809 struct snd_ctl_elem_value
*ucontrol
)
2811 struct soc_mixer_control
*mc
=
2812 (struct soc_mixer_control
*)kcontrol
->private_value
;
2813 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2814 unsigned int reg
= mc
->reg
;
2815 unsigned int reg2
= mc
->rreg
;
2816 unsigned int shift
= mc
->shift
;
2817 unsigned int rshift
= mc
->rshift
;
2819 unsigned int mask
= (1 << fls(max
)) - 1;
2820 unsigned int invert
= mc
->invert
;
2823 unsigned int val2
= 0;
2824 unsigned int val
, val_mask
;
2826 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2829 val_mask
= mask
<< shift
;
2831 if (snd_soc_volsw_is_stereo(mc
)) {
2832 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2836 val_mask
|= mask
<< rshift
;
2837 val
|= val2
<< rshift
;
2839 val2
= val2
<< shift
;
2843 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2848 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2852 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2855 * snd_soc_get_volsw_sx - single mixer get callback
2856 * @kcontrol: mixer control
2857 * @ucontrol: control element information
2859 * Callback to get the value of a single mixer control, or a double mixer
2860 * control that spans 2 registers.
2862 * Returns 0 for success.
2864 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2865 struct snd_ctl_elem_value
*ucontrol
)
2867 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2868 struct soc_mixer_control
*mc
=
2869 (struct soc_mixer_control
*)kcontrol
->private_value
;
2871 unsigned int reg
= mc
->reg
;
2872 unsigned int reg2
= mc
->rreg
;
2873 unsigned int shift
= mc
->shift
;
2874 unsigned int rshift
= mc
->rshift
;
2877 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2879 ucontrol
->value
.integer
.value
[0] =
2880 ((snd_soc_read(codec
, reg
) >> shift
) - min
) & mask
;
2882 if (snd_soc_volsw_is_stereo(mc
))
2883 ucontrol
->value
.integer
.value
[1] =
2884 ((snd_soc_read(codec
, reg2
) >> rshift
) - min
) & mask
;
2888 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2891 * snd_soc_put_volsw_sx - double mixer set callback
2892 * @kcontrol: mixer control
2893 * @uinfo: control element information
2895 * Callback to set the value of a double mixer control that spans 2 registers.
2897 * Returns 0 for success.
2899 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2900 struct snd_ctl_elem_value
*ucontrol
)
2902 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2903 struct soc_mixer_control
*mc
=
2904 (struct soc_mixer_control
*)kcontrol
->private_value
;
2906 unsigned int reg
= mc
->reg
;
2907 unsigned int reg2
= mc
->rreg
;
2908 unsigned int shift
= mc
->shift
;
2909 unsigned int rshift
= mc
->rshift
;
2912 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2914 unsigned short val
, val_mask
, val2
= 0;
2916 val_mask
= mask
<< shift
;
2917 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2920 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2924 if (snd_soc_volsw_is_stereo(mc
)) {
2925 val_mask
= mask
<< rshift
;
2926 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2927 val2
= val2
<< rshift
;
2929 if (snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
))
2934 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2937 * snd_soc_info_volsw_s8 - signed mixer info callback
2938 * @kcontrol: mixer control
2939 * @uinfo: control element information
2941 * Callback to provide information about a signed mixer control.
2943 * Returns 0 for success.
2945 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2946 struct snd_ctl_elem_info
*uinfo
)
2948 struct soc_mixer_control
*mc
=
2949 (struct soc_mixer_control
*)kcontrol
->private_value
;
2953 if (!mc
->platform_max
)
2954 mc
->platform_max
= mc
->max
;
2955 platform_max
= mc
->platform_max
;
2957 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2959 uinfo
->value
.integer
.min
= 0;
2960 uinfo
->value
.integer
.max
= platform_max
- min
;
2963 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2966 * snd_soc_get_volsw_s8 - signed mixer get callback
2967 * @kcontrol: mixer control
2968 * @ucontrol: control element information
2970 * Callback to get the value of a signed mixer control.
2972 * Returns 0 for success.
2974 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2975 struct snd_ctl_elem_value
*ucontrol
)
2977 struct soc_mixer_control
*mc
=
2978 (struct soc_mixer_control
*)kcontrol
->private_value
;
2979 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2980 unsigned int reg
= mc
->reg
;
2982 int val
= snd_soc_read(codec
, reg
);
2984 ucontrol
->value
.integer
.value
[0] =
2985 ((signed char)(val
& 0xff))-min
;
2986 ucontrol
->value
.integer
.value
[1] =
2987 ((signed char)((val
>> 8) & 0xff))-min
;
2990 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2993 * snd_soc_put_volsw_sgn - signed mixer put callback
2994 * @kcontrol: mixer control
2995 * @ucontrol: control element information
2997 * Callback to set the value of a signed mixer control.
2999 * Returns 0 for success.
3001 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
3002 struct snd_ctl_elem_value
*ucontrol
)
3004 struct soc_mixer_control
*mc
=
3005 (struct soc_mixer_control
*)kcontrol
->private_value
;
3006 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3007 unsigned int reg
= mc
->reg
;
3011 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
3012 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
3014 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
3016 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
3019 * snd_soc_info_volsw_range - single mixer info callback with range.
3020 * @kcontrol: mixer control
3021 * @uinfo: control element information
3023 * Callback to provide information, within a range, about a single
3026 * returns 0 for success.
3028 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
3029 struct snd_ctl_elem_info
*uinfo
)
3031 struct soc_mixer_control
*mc
=
3032 (struct soc_mixer_control
*)kcontrol
->private_value
;
3036 if (!mc
->platform_max
)
3037 mc
->platform_max
= mc
->max
;
3038 platform_max
= mc
->platform_max
;
3040 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3041 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
3042 uinfo
->value
.integer
.min
= 0;
3043 uinfo
->value
.integer
.max
= platform_max
- min
;
3047 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
3050 * snd_soc_put_volsw_range - single mixer put value callback with range.
3051 * @kcontrol: mixer control
3052 * @ucontrol: control element information
3054 * Callback to set the value, within a range, for a single mixer control.
3056 * Returns 0 for success.
3058 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
3059 struct snd_ctl_elem_value
*ucontrol
)
3061 struct soc_mixer_control
*mc
=
3062 (struct soc_mixer_control
*)kcontrol
->private_value
;
3063 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3064 unsigned int reg
= mc
->reg
;
3065 unsigned int rreg
= mc
->rreg
;
3066 unsigned int shift
= mc
->shift
;
3069 unsigned int mask
= (1 << fls(max
)) - 1;
3070 unsigned int invert
= mc
->invert
;
3071 unsigned int val
, val_mask
;
3074 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
3077 val_mask
= mask
<< shift
;
3080 ret
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
3084 if (snd_soc_volsw_is_stereo(mc
)) {
3085 val
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
3088 val_mask
= mask
<< shift
;
3091 ret
= snd_soc_update_bits_locked(codec
, rreg
, val_mask
, val
);
3096 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
3099 * snd_soc_get_volsw_range - single mixer get callback with range
3100 * @kcontrol: mixer control
3101 * @ucontrol: control element information
3103 * Callback to get the value, within a range, of a single mixer control.
3105 * Returns 0 for success.
3107 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
3108 struct snd_ctl_elem_value
*ucontrol
)
3110 struct soc_mixer_control
*mc
=
3111 (struct soc_mixer_control
*)kcontrol
->private_value
;
3112 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3113 unsigned int reg
= mc
->reg
;
3114 unsigned int rreg
= mc
->rreg
;
3115 unsigned int shift
= mc
->shift
;
3118 unsigned int mask
= (1 << fls(max
)) - 1;
3119 unsigned int invert
= mc
->invert
;
3121 ucontrol
->value
.integer
.value
[0] =
3122 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
3124 ucontrol
->value
.integer
.value
[0] =
3125 max
- ucontrol
->value
.integer
.value
[0];
3126 ucontrol
->value
.integer
.value
[0] =
3127 ucontrol
->value
.integer
.value
[0] - min
;
3129 if (snd_soc_volsw_is_stereo(mc
)) {
3130 ucontrol
->value
.integer
.value
[1] =
3131 (snd_soc_read(codec
, rreg
) >> shift
) & mask
;
3133 ucontrol
->value
.integer
.value
[1] =
3134 max
- ucontrol
->value
.integer
.value
[1];
3135 ucontrol
->value
.integer
.value
[1] =
3136 ucontrol
->value
.integer
.value
[1] - min
;
3141 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
3144 * snd_soc_limit_volume - Set new limit to an existing volume control.
3146 * @codec: where to look for the control
3147 * @name: Name of the control
3148 * @max: new maximum limit
3150 * Return 0 for success, else error.
3152 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3153 const char *name
, int max
)
3155 struct snd_card
*card
= codec
->card
->snd_card
;
3156 struct snd_kcontrol
*kctl
;
3157 struct soc_mixer_control
*mc
;
3161 /* Sanity check for name and max */
3162 if (unlikely(!name
|| max
<= 0))
3165 list_for_each_entry(kctl
, &card
->controls
, list
) {
3166 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3172 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3173 if (max
<= mc
->max
) {
3174 mc
->platform_max
= max
;
3180 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3182 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
3183 struct snd_ctl_elem_info
*uinfo
)
3185 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3186 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3188 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
3189 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
3193 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
3195 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
3196 struct snd_ctl_elem_value
*ucontrol
)
3198 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3199 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3202 if (codec
->using_regmap
)
3203 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
3204 ucontrol
->value
.bytes
.data
,
3205 params
->num_regs
* codec
->val_bytes
);
3209 /* Hide any masked bytes to ensure consistent data reporting */
3210 if (ret
== 0 && params
->mask
) {
3211 switch (codec
->val_bytes
) {
3213 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
3216 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
3220 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
3230 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
3232 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
3233 struct snd_ctl_elem_value
*ucontrol
)
3235 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3236 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3241 if (!codec
->using_regmap
)
3244 len
= params
->num_regs
* codec
->val_bytes
;
3246 data
= kmemdup(ucontrol
->value
.bytes
.data
, len
, GFP_KERNEL
| GFP_DMA
);
3251 * If we've got a mask then we need to preserve the register
3252 * bits. We shouldn't modify the incoming data so take a
3256 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
3260 val
&= params
->mask
;
3262 switch (codec
->val_bytes
) {
3264 ((u8
*)data
)[0] &= ~params
->mask
;
3265 ((u8
*)data
)[0] |= val
;
3268 ((u16
*)data
)[0] &= cpu_to_be16(~params
->mask
);
3269 ((u16
*)data
)[0] |= cpu_to_be16(val
);
3272 ((u32
*)data
)[0] &= cpu_to_be32(~params
->mask
);
3273 ((u32
*)data
)[0] |= cpu_to_be32(val
);
3281 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
3289 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
3292 * snd_soc_info_xr_sx - signed multi register info callback
3293 * @kcontrol: mreg control
3294 * @uinfo: control element information
3296 * Callback to provide information of a control that can
3297 * span multiple codec registers which together
3298 * forms a single signed value in a MSB/LSB manner.
3300 * Returns 0 for success.
3302 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
3303 struct snd_ctl_elem_info
*uinfo
)
3305 struct soc_mreg_control
*mc
=
3306 (struct soc_mreg_control
*)kcontrol
->private_value
;
3307 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3309 uinfo
->value
.integer
.min
= mc
->min
;
3310 uinfo
->value
.integer
.max
= mc
->max
;
3314 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
3317 * snd_soc_get_xr_sx - signed multi register get callback
3318 * @kcontrol: mreg control
3319 * @ucontrol: control element information
3321 * Callback to get the value of a control that can span
3322 * multiple codec registers which together forms a single
3323 * signed value in a MSB/LSB manner. The control supports
3324 * specifying total no of bits used to allow for bitfields
3325 * across the multiple codec registers.
3327 * Returns 0 for success.
3329 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
3330 struct snd_ctl_elem_value
*ucontrol
)
3332 struct soc_mreg_control
*mc
=
3333 (struct soc_mreg_control
*)kcontrol
->private_value
;
3334 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3335 unsigned int regbase
= mc
->regbase
;
3336 unsigned int regcount
= mc
->regcount
;
3337 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3338 unsigned int regwmask
= (1<<regwshift
)-1;
3339 unsigned int invert
= mc
->invert
;
3340 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3344 unsigned long regval
;
3347 for (i
= 0; i
< regcount
; i
++) {
3348 regval
= snd_soc_read(codec
, regbase
+i
) & regwmask
;
3349 val
|= regval
<< (regwshift
*(regcount
-i
-1));
3352 if (min
< 0 && val
> max
)
3356 ucontrol
->value
.integer
.value
[0] = val
;
3360 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3363 * snd_soc_put_xr_sx - signed multi register get callback
3364 * @kcontrol: mreg control
3365 * @ucontrol: control element information
3367 * Callback to set the value of a control that can span
3368 * multiple codec registers which together forms a single
3369 * signed value in a MSB/LSB manner. The control supports
3370 * specifying total no of bits used to allow for bitfields
3371 * across the multiple codec registers.
3373 * Returns 0 for success.
3375 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3376 struct snd_ctl_elem_value
*ucontrol
)
3378 struct soc_mreg_control
*mc
=
3379 (struct soc_mreg_control
*)kcontrol
->private_value
;
3380 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3381 unsigned int regbase
= mc
->regbase
;
3382 unsigned int regcount
= mc
->regcount
;
3383 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3384 unsigned int regwmask
= (1<<regwshift
)-1;
3385 unsigned int invert
= mc
->invert
;
3386 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3388 long val
= ucontrol
->value
.integer
.value
[0];
3389 unsigned int i
, regval
, regmask
;
3395 for (i
= 0; i
< regcount
; i
++) {
3396 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3397 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3398 err
= snd_soc_update_bits_locked(codec
, regbase
+i
,
3406 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3409 * snd_soc_get_strobe - strobe get callback
3410 * @kcontrol: mixer control
3411 * @ucontrol: control element information
3413 * Callback get the value of a strobe mixer control.
3415 * Returns 0 for success.
3417 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3418 struct snd_ctl_elem_value
*ucontrol
)
3420 struct soc_mixer_control
*mc
=
3421 (struct soc_mixer_control
*)kcontrol
->private_value
;
3422 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3423 unsigned int reg
= mc
->reg
;
3424 unsigned int shift
= mc
->shift
;
3425 unsigned int mask
= 1 << shift
;
3426 unsigned int invert
= mc
->invert
!= 0;
3427 unsigned int val
= snd_soc_read(codec
, reg
) & mask
;
3429 if (shift
!= 0 && val
!= 0)
3431 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3435 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3438 * snd_soc_put_strobe - strobe put callback
3439 * @kcontrol: mixer control
3440 * @ucontrol: control element information
3442 * Callback strobe a register bit to high then low (or the inverse)
3443 * in one pass of a single mixer enum control.
3445 * Returns 1 for success.
3447 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3448 struct snd_ctl_elem_value
*ucontrol
)
3450 struct soc_mixer_control
*mc
=
3451 (struct soc_mixer_control
*)kcontrol
->private_value
;
3452 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3453 unsigned int reg
= mc
->reg
;
3454 unsigned int shift
= mc
->shift
;
3455 unsigned int mask
= 1 << shift
;
3456 unsigned int invert
= mc
->invert
!= 0;
3457 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3458 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3459 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3462 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val1
);
3466 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val2
);
3469 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3472 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3474 * @clk_id: DAI specific clock ID
3475 * @freq: new clock frequency in Hz
3476 * @dir: new clock direction - input/output.
3478 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3480 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3481 unsigned int freq
, int dir
)
3483 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3484 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3485 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3486 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3491 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3494 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3496 * @clk_id: DAI specific clock ID
3497 * @source: Source for the clock
3498 * @freq: new clock frequency in Hz
3499 * @dir: new clock direction - input/output.
3501 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3503 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3504 int source
, unsigned int freq
, int dir
)
3506 if (codec
->driver
->set_sysclk
)
3507 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3512 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3515 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3517 * @div_id: DAI specific clock divider ID
3518 * @div: new clock divisor.
3520 * Configures the clock dividers. This is used to derive the best DAI bit and
3521 * frame clocks from the system or master clock. It's best to set the DAI bit
3522 * and frame clocks as low as possible to save system power.
3524 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3525 int div_id
, int div
)
3527 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3528 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3532 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3535 * snd_soc_dai_set_pll - configure DAI PLL.
3537 * @pll_id: DAI specific PLL ID
3538 * @source: DAI specific source for the PLL
3539 * @freq_in: PLL input clock frequency in Hz
3540 * @freq_out: requested PLL output clock frequency in Hz
3542 * Configures and enables PLL to generate output clock based on input clock.
3544 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3545 unsigned int freq_in
, unsigned int freq_out
)
3547 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3548 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3550 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3551 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3556 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3559 * snd_soc_codec_set_pll - configure codec PLL.
3561 * @pll_id: DAI specific PLL ID
3562 * @source: DAI specific source for the PLL
3563 * @freq_in: PLL input clock frequency in Hz
3564 * @freq_out: requested PLL output clock frequency in Hz
3566 * Configures and enables PLL to generate output clock based on input clock.
3568 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3569 unsigned int freq_in
, unsigned int freq_out
)
3571 if (codec
->driver
->set_pll
)
3572 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3577 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3580 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3582 * @fmt: SND_SOC_DAIFMT_ format value.
3584 * Configures the DAI hardware format and clocking.
3586 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3588 if (dai
->driver
== NULL
)
3590 if (dai
->driver
->ops
->set_fmt
== NULL
)
3592 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3594 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3597 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3599 * @tx_mask: bitmask representing active TX slots.
3600 * @rx_mask: bitmask representing active RX slots.
3601 * @slots: Number of slots in use.
3602 * @slot_width: Width in bits for each slot.
3604 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3607 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3608 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3610 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3611 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3616 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3619 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3621 * @tx_num: how many TX channels
3622 * @tx_slot: pointer to an array which imply the TX slot number channel
3624 * @rx_num: how many RX channels
3625 * @rx_slot: pointer to an array which imply the RX slot number channel
3628 * configure the relationship between channel number and TDM slot number.
3630 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3631 unsigned int tx_num
, unsigned int *tx_slot
,
3632 unsigned int rx_num
, unsigned int *rx_slot
)
3634 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3635 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3640 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3643 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3645 * @tristate: tristate enable
3647 * Tristates the DAI so that others can use it.
3649 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3651 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3652 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3656 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3659 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3661 * @mute: mute enable
3662 * @direction: stream to mute
3664 * Mutes the DAI DAC.
3666 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
3672 if (dai
->driver
->ops
->mute_stream
)
3673 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
3674 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
3675 dai
->driver
->ops
->digital_mute
)
3676 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3680 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3683 * snd_soc_register_card - Register a card with the ASoC core
3685 * @card: Card to register
3688 int snd_soc_register_card(struct snd_soc_card
*card
)
3692 if (!card
->name
|| !card
->dev
)
3695 for (i
= 0; i
< card
->num_links
; i
++) {
3696 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3699 * Codec must be specified by 1 of name or OF node,
3700 * not both or neither.
3702 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3704 "ASoC: Neither/both codec name/of_node are set for %s\n",
3708 /* Codec DAI name must be specified */
3709 if (!link
->codec_dai_name
) {
3711 "ASoC: codec_dai_name not set for %s\n",
3717 * Platform may be specified by either name or OF node, but
3718 * can be left unspecified, and a dummy platform will be used.
3720 if (link
->platform_name
&& link
->platform_of_node
) {
3722 "ASoC: Both platform name/of_node are set for %s\n",
3728 * CPU device may be specified by either name or OF node, but
3729 * can be left unspecified, and will be matched based on DAI
3732 if (link
->cpu_name
&& link
->cpu_of_node
) {
3734 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3739 * At least one of CPU DAI name or CPU device name/node must be
3742 if (!link
->cpu_dai_name
&&
3743 !(link
->cpu_name
|| link
->cpu_of_node
)) {
3745 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3751 dev_set_drvdata(card
->dev
, card
);
3753 snd_soc_initialize_card_lists(card
);
3755 soc_init_card_debugfs(card
);
3757 card
->rtd
= devm_kzalloc(card
->dev
,
3758 sizeof(struct snd_soc_pcm_runtime
) *
3759 (card
->num_links
+ card
->num_aux_devs
),
3761 if (card
->rtd
== NULL
)
3764 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3766 for (i
= 0; i
< card
->num_links
; i
++)
3767 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3769 INIT_LIST_HEAD(&card
->list
);
3770 INIT_LIST_HEAD(&card
->dapm_dirty
);
3771 card
->instantiated
= 0;
3772 mutex_init(&card
->mutex
);
3773 mutex_init(&card
->dapm_mutex
);
3775 ret
= snd_soc_instantiate_card(card
);
3777 soc_cleanup_card_debugfs(card
);
3781 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3784 * snd_soc_unregister_card - Unregister a card with the ASoC core
3786 * @card: Card to unregister
3789 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3791 if (card
->instantiated
)
3792 soc_cleanup_card_resources(card
);
3793 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3797 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3800 * Simplify DAI link configuration by removing ".-1" from device names
3801 * and sanitizing names.
3803 static char *fmt_single_name(struct device
*dev
, int *id
)
3805 char *found
, name
[NAME_SIZE
];
3808 if (dev_name(dev
) == NULL
)
3811 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3813 /* are we a "%s.%d" name (platform and SPI components) */
3814 found
= strstr(name
, dev
->driver
->name
);
3817 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3819 /* discard ID from name if ID == -1 */
3821 found
[strlen(dev
->driver
->name
)] = '\0';
3825 /* I2C component devices are named "bus-addr" */
3826 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3827 char tmp
[NAME_SIZE
];
3829 /* create unique ID number from I2C addr and bus */
3830 *id
= ((id1
& 0xffff) << 16) + id2
;
3832 /* sanitize component name for DAI link creation */
3833 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3834 strlcpy(name
, tmp
, NAME_SIZE
);
3839 return kstrdup(name
, GFP_KERNEL
);
3843 * Simplify DAI link naming for single devices with multiple DAIs by removing
3844 * any ".-1" and using the DAI name (instead of device name).
3846 static inline char *fmt_multiple_name(struct device
*dev
,
3847 struct snd_soc_dai_driver
*dai_drv
)
3849 if (dai_drv
->name
== NULL
) {
3851 "ASoC: error - multiple DAI %s registered with no name\n",
3856 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3860 * snd_soc_register_dai - Register a DAI with the ASoC core
3862 * @dai: DAI to register
3864 static int snd_soc_register_dai(struct device
*dev
,
3865 struct snd_soc_dai_driver
*dai_drv
)
3867 struct snd_soc_codec
*codec
;
3868 struct snd_soc_dai
*dai
;
3870 dev_dbg(dev
, "ASoC: dai register %s\n", dev_name(dev
));
3872 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3876 /* create DAI component name */
3877 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3878 if (dai
->name
== NULL
) {
3884 dai
->driver
= dai_drv
;
3885 dai
->dapm
.dev
= dev
;
3886 if (!dai
->driver
->ops
)
3887 dai
->driver
->ops
= &null_dai_ops
;
3889 mutex_lock(&client_mutex
);
3891 list_for_each_entry(codec
, &codec_list
, list
) {
3892 if (codec
->dev
== dev
) {
3893 dev_dbg(dev
, "ASoC: Mapped DAI %s to CODEC %s\n",
3894 dai
->name
, codec
->name
);
3901 dai
->dapm
.idle_bias_off
= 1;
3903 list_add(&dai
->list
, &dai_list
);
3905 mutex_unlock(&client_mutex
);
3907 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3913 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3915 * @dai: DAI to unregister
3917 static void snd_soc_unregister_dai(struct device
*dev
)
3919 struct snd_soc_dai
*dai
;
3921 list_for_each_entry(dai
, &dai_list
, list
) {
3922 if (dev
== dai
->dev
)
3928 mutex_lock(&client_mutex
);
3929 list_del(&dai
->list
);
3930 mutex_unlock(&client_mutex
);
3932 dev_dbg(dev
, "ASoC: Unregistered DAI '%s'\n", dai
->name
);
3938 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3940 * @dai: Array of DAIs to register
3941 * @count: Number of DAIs
3943 static int snd_soc_register_dais(struct device
*dev
,
3944 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3946 struct snd_soc_codec
*codec
;
3947 struct snd_soc_dai
*dai
;
3950 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
3952 for (i
= 0; i
< count
; i
++) {
3954 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3960 /* create DAI component name */
3961 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3962 if (dai
->name
== NULL
) {
3969 dai
->driver
= &dai_drv
[i
];
3970 if (dai
->driver
->id
)
3971 dai
->id
= dai
->driver
->id
;
3974 dai
->dapm
.dev
= dev
;
3975 if (!dai
->driver
->ops
)
3976 dai
->driver
->ops
= &null_dai_ops
;
3978 mutex_lock(&client_mutex
);
3980 list_for_each_entry(codec
, &codec_list
, list
) {
3981 if (codec
->dev
== dev
) {
3983 "ASoC: Mapped DAI %s to CODEC %s\n",
3984 dai
->name
, codec
->name
);
3991 dai
->dapm
.idle_bias_off
= 1;
3993 list_add(&dai
->list
, &dai_list
);
3995 mutex_unlock(&client_mutex
);
3997 dev_dbg(dai
->dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
4003 for (i
--; i
>= 0; i
--)
4004 snd_soc_unregister_dai(dev
);
4010 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
4012 * @dai: Array of DAIs to unregister
4013 * @count: Number of DAIs
4015 static void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
4019 for (i
= 0; i
< count
; i
++)
4020 snd_soc_unregister_dai(dev
);
4024 * snd_soc_add_platform - Add a platform to the ASoC core
4025 * @dev: The parent device for the platform
4026 * @platform: The platform to add
4027 * @platform_driver: The driver for the platform
4029 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
4030 const struct snd_soc_platform_driver
*platform_drv
)
4032 /* create platform component name */
4033 platform
->name
= fmt_single_name(dev
, &platform
->id
);
4034 if (platform
->name
== NULL
)
4037 platform
->dev
= dev
;
4038 platform
->driver
= platform_drv
;
4039 platform
->dapm
.dev
= dev
;
4040 platform
->dapm
.platform
= platform
;
4041 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
4042 mutex_init(&platform
->mutex
);
4044 mutex_lock(&client_mutex
);
4045 list_add(&platform
->list
, &platform_list
);
4046 mutex_unlock(&client_mutex
);
4048 dev_dbg(dev
, "ASoC: Registered platform '%s'\n", platform
->name
);
4052 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
4055 * snd_soc_register_platform - Register a platform with the ASoC core
4057 * @platform: platform to register
4059 int snd_soc_register_platform(struct device
*dev
,
4060 const struct snd_soc_platform_driver
*platform_drv
)
4062 struct snd_soc_platform
*platform
;
4065 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
4067 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
4068 if (platform
== NULL
)
4071 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
4077 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
4080 * snd_soc_remove_platform - Remove a platform from the ASoC core
4081 * @platform: the platform to remove
4083 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
4085 mutex_lock(&client_mutex
);
4086 list_del(&platform
->list
);
4087 mutex_unlock(&client_mutex
);
4089 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
4091 kfree(platform
->name
);
4093 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
4095 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
4097 struct snd_soc_platform
*platform
;
4099 list_for_each_entry(platform
, &platform_list
, list
) {
4100 if (dev
== platform
->dev
)
4106 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
4109 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4111 * @platform: platform to unregister
4113 void snd_soc_unregister_platform(struct device
*dev
)
4115 struct snd_soc_platform
*platform
;
4117 platform
= snd_soc_lookup_platform(dev
);
4121 snd_soc_remove_platform(platform
);
4124 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
4126 static u64 codec_format_map
[] = {
4127 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
4128 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
4129 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
4130 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
4131 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
4132 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
4133 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4134 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4135 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
4136 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
4137 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
4138 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
4139 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
4140 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
4141 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4142 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
4145 /* Fix up the DAI formats for endianness: codecs don't actually see
4146 * the endianness of the data but we're using the CPU format
4147 * definitions which do need to include endianness so we ensure that
4148 * codec DAIs always have both big and little endian variants set.
4150 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
4154 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
4155 if (stream
->formats
& codec_format_map
[i
])
4156 stream
->formats
|= codec_format_map
[i
];
4160 * snd_soc_register_codec - Register a codec with the ASoC core
4162 * @codec: codec to register
4164 int snd_soc_register_codec(struct device
*dev
,
4165 const struct snd_soc_codec_driver
*codec_drv
,
4166 struct snd_soc_dai_driver
*dai_drv
,
4170 struct snd_soc_codec
*codec
;
4173 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
4175 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
4179 /* create CODEC component name */
4180 codec
->name
= fmt_single_name(dev
, &codec
->id
);
4181 if (codec
->name
== NULL
) {
4186 if (codec_drv
->compress_type
)
4187 codec
->compress_type
= codec_drv
->compress_type
;
4189 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
4191 codec
->write
= codec_drv
->write
;
4192 codec
->read
= codec_drv
->read
;
4193 codec
->volatile_register
= codec_drv
->volatile_register
;
4194 codec
->readable_register
= codec_drv
->readable_register
;
4195 codec
->writable_register
= codec_drv
->writable_register
;
4196 codec
->ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
4197 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
4198 codec
->dapm
.dev
= dev
;
4199 codec
->dapm
.codec
= codec
;
4200 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
4201 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
4203 codec
->driver
= codec_drv
;
4204 codec
->num_dai
= num_dai
;
4205 mutex_init(&codec
->mutex
);
4207 /* allocate CODEC register cache */
4208 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
4209 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
4210 codec
->reg_size
= reg_size
;
4211 /* it is necessary to make a copy of the default register cache
4212 * because in the case of using a compression type that requires
4213 * the default register cache to be marked as the
4214 * kernel might have freed the array by the time we initialize
4217 if (codec_drv
->reg_cache_default
) {
4218 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
4219 reg_size
, GFP_KERNEL
);
4220 if (!codec
->reg_def_copy
) {
4222 goto fail_codec_name
;
4227 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
4228 if (!codec
->volatile_register
)
4229 codec
->volatile_register
= snd_soc_default_volatile_register
;
4230 if (!codec
->readable_register
)
4231 codec
->readable_register
= snd_soc_default_readable_register
;
4232 if (!codec
->writable_register
)
4233 codec
->writable_register
= snd_soc_default_writable_register
;
4236 for (i
= 0; i
< num_dai
; i
++) {
4237 fixup_codec_formats(&dai_drv
[i
].playback
);
4238 fixup_codec_formats(&dai_drv
[i
].capture
);
4241 mutex_lock(&client_mutex
);
4242 list_add(&codec
->list
, &codec_list
);
4243 mutex_unlock(&client_mutex
);
4245 /* register any DAIs */
4246 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
4248 dev_err(codec
->dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4249 goto fail_codec_name
;
4252 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n", codec
->name
);
4256 mutex_lock(&client_mutex
);
4257 list_del(&codec
->list
);
4258 mutex_unlock(&client_mutex
);
4265 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
4268 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4270 * @codec: codec to unregister
4272 void snd_soc_unregister_codec(struct device
*dev
)
4274 struct snd_soc_codec
*codec
;
4276 list_for_each_entry(codec
, &codec_list
, list
) {
4277 if (dev
== codec
->dev
)
4283 snd_soc_unregister_dais(dev
, codec
->num_dai
);
4285 mutex_lock(&client_mutex
);
4286 list_del(&codec
->list
);
4287 mutex_unlock(&client_mutex
);
4289 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n", codec
->name
);
4291 snd_soc_cache_exit(codec
);
4292 kfree(codec
->reg_def_copy
);
4296 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
4300 * snd_soc_register_component - Register a component with the ASoC core
4303 int snd_soc_register_component(struct device
*dev
,
4304 const struct snd_soc_component_driver
*cmpnt_drv
,
4305 struct snd_soc_dai_driver
*dai_drv
,
4308 struct snd_soc_component
*cmpnt
;
4311 dev_dbg(dev
, "component register %s\n", dev_name(dev
));
4313 cmpnt
= devm_kzalloc(dev
, sizeof(*cmpnt
), GFP_KERNEL
);
4315 dev_err(dev
, "ASoC: Failed to allocate memory\n");
4319 cmpnt
->name
= fmt_single_name(dev
, &cmpnt
->id
);
4321 dev_err(dev
, "ASoC: Failed to simplifying name\n");
4326 cmpnt
->driver
= cmpnt_drv
;
4327 cmpnt
->num_dai
= num_dai
;
4330 * snd_soc_register_dai() uses fmt_single_name(), and
4331 * snd_soc_register_dais() uses fmt_multiple_name()
4332 * for dai->name which is used for name based matching
4335 ret
= snd_soc_register_dai(dev
, dai_drv
);
4337 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
4339 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4340 goto error_component_name
;
4343 mutex_lock(&client_mutex
);
4344 list_add(&cmpnt
->list
, &component_list
);
4345 mutex_unlock(&client_mutex
);
4347 dev_dbg(cmpnt
->dev
, "ASoC: Registered component '%s'\n", cmpnt
->name
);
4351 error_component_name
:
4356 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
4359 * snd_soc_unregister_component - Unregister a component from the ASoC core
4362 void snd_soc_unregister_component(struct device
*dev
)
4364 struct snd_soc_component
*cmpnt
;
4366 list_for_each_entry(cmpnt
, &component_list
, list
) {
4367 if (dev
== cmpnt
->dev
)
4373 snd_soc_unregister_dais(dev
, cmpnt
->num_dai
);
4375 mutex_lock(&client_mutex
);
4376 list_del(&cmpnt
->list
);
4377 mutex_unlock(&client_mutex
);
4379 dev_dbg(dev
, "ASoC: Unregistered component '%s'\n", cmpnt
->name
);
4382 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
4384 /* Retrieve a card's name from device tree */
4385 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
4386 const char *propname
)
4388 struct device_node
*np
= card
->dev
->of_node
;
4391 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
4393 * EINVAL means the property does not exist. This is fine providing
4394 * card->name was previously set, which is checked later in
4395 * snd_soc_register_card.
4397 if (ret
< 0 && ret
!= -EINVAL
) {
4399 "ASoC: Property '%s' could not be read: %d\n",
4406 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
4408 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4409 const char *propname
)
4411 struct device_node
*np
= card
->dev
->of_node
;
4413 struct snd_soc_dapm_route
*routes
;
4416 num_routes
= of_property_count_strings(np
, propname
);
4417 if (num_routes
< 0 || num_routes
& 1) {
4419 "ASoC: Property '%s' does not exist or its length is not even\n",
4425 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4430 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4434 "ASoC: Could not allocate DAPM route table\n");
4438 for (i
= 0; i
< num_routes
; i
++) {
4439 ret
= of_property_read_string_index(np
, propname
,
4440 2 * i
, &routes
[i
].sink
);
4443 "ASoC: Property '%s' index %d could not be read: %d\n",
4444 propname
, 2 * i
, ret
);
4447 ret
= of_property_read_string_index(np
, propname
,
4448 (2 * i
) + 1, &routes
[i
].source
);
4451 "ASoC: Property '%s' index %d could not be read: %d\n",
4452 propname
, (2 * i
) + 1, ret
);
4457 card
->num_dapm_routes
= num_routes
;
4458 card
->dapm_routes
= routes
;
4462 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4464 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4469 unsigned int format
= 0;
4475 } of_fmt_table
[] = {
4476 { "i2s", SND_SOC_DAIFMT_I2S
},
4477 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4478 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4479 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4480 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4481 { "ac97", SND_SOC_DAIFMT_AC97
},
4482 { "pdm", SND_SOC_DAIFMT_PDM
},
4483 { "msb", SND_SOC_DAIFMT_MSB
},
4484 { "lsb", SND_SOC_DAIFMT_LSB
},
4491 * check "[prefix]format = xxx"
4492 * SND_SOC_DAIFMT_FORMAT_MASK area
4494 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4495 ret
= of_property_read_string(np
, prop
, &str
);
4497 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4498 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4499 format
|= of_fmt_table
[i
].val
;
4506 * check "[prefix]continuous-clock"
4507 * SND_SOC_DAIFMT_CLOCK_MASK area
4509 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4510 if (of_get_property(np
, prop
, NULL
))
4511 format
|= SND_SOC_DAIFMT_CONT
;
4513 format
|= SND_SOC_DAIFMT_GATED
;
4516 * check "[prefix]bitclock-inversion"
4517 * check "[prefix]frame-inversion"
4518 * SND_SOC_DAIFMT_INV_MASK area
4520 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4521 bit
= !!of_get_property(np
, prop
, NULL
);
4523 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4524 frame
= !!of_get_property(np
, prop
, NULL
);
4526 switch ((bit
<< 4) + frame
) {
4528 format
|= SND_SOC_DAIFMT_IB_IF
;
4531 format
|= SND_SOC_DAIFMT_IB_NF
;
4534 format
|= SND_SOC_DAIFMT_NB_IF
;
4537 /* SND_SOC_DAIFMT_NB_NF is default */
4542 * check "[prefix]bitclock-master"
4543 * check "[prefix]frame-master"
4544 * SND_SOC_DAIFMT_MASTER_MASK area
4546 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4547 bit
= !!of_get_property(np
, prop
, NULL
);
4549 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4550 frame
= !!of_get_property(np
, prop
, NULL
);
4552 switch ((bit
<< 4) + frame
) {
4554 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4557 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4560 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4563 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4569 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4571 static int __init
snd_soc_init(void)
4573 #ifdef CONFIG_DEBUG_FS
4574 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
4575 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
4576 pr_warn("ASoC: Failed to create debugfs directory\n");
4577 snd_soc_debugfs_root
= NULL
;
4580 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
4582 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4584 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
4586 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4588 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
4589 &platform_list_fops
))
4590 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4593 snd_soc_util_init();
4595 return platform_driver_register(&soc_driver
);
4597 module_init(snd_soc_init
);
4599 static void __exit
snd_soc_exit(void)
4601 snd_soc_util_exit();
4603 #ifdef CONFIG_DEBUG_FS
4604 debugfs_remove_recursive(snd_soc_debugfs_root
);
4606 platform_driver_unregister(&soc_driver
);
4608 module_exit(snd_soc_exit
);
4610 /* Module information */
4611 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4612 MODULE_DESCRIPTION("ALSA SoC Core");
4613 MODULE_LICENSE("GPL");
4614 MODULE_ALIAS("platform:soc-audio");