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/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
52 #ifdef CONFIG_DEBUG_FS
53 struct dentry
*snd_soc_debugfs_root
;
54 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
57 static DEFINE_MUTEX(client_mutex
);
58 static LIST_HEAD(dai_list
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
67 static int pmdown_time
= 5000;
68 module_param(pmdown_time
, int, 0);
69 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
71 /* returns the minimum number of bytes needed to represent
72 * a particular given value */
73 static int min_bytes_needed(unsigned long val
)
78 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
81 c
= (sizeof val
* 8) - c
;
89 /* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91 static int format_register_str(struct snd_soc_codec
*codec
,
92 unsigned int reg
, char *buf
, size_t len
)
94 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
95 int regsize
= codec
->driver
->reg_word_size
* 2;
98 char regbuf
[regsize
+ 1];
100 /* since tmpbuf is allocated on the stack, warn the callers if they
101 * try to abuse this function */
104 /* +2 for ': ' and + 1 for '\n' */
105 if (wordsize
+ regsize
+ 2 + 1 != len
)
108 ret
= snd_soc_read(codec
, reg
);
110 memset(regbuf
, 'X', regsize
);
111 regbuf
[regsize
] = '\0';
113 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
116 /* prepare the buffer */
117 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
118 /* copy it back to the caller without the '\0' */
119 memcpy(buf
, tmpbuf
, len
);
124 /* codec register dump */
125 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
126 size_t count
, loff_t pos
)
129 int wordsize
, regsize
;
134 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
135 regsize
= codec
->driver
->reg_word_size
* 2;
137 len
= wordsize
+ regsize
+ 2 + 1;
139 if (!codec
->driver
->reg_cache_size
)
142 if (codec
->driver
->reg_cache_step
)
143 step
= codec
->driver
->reg_cache_step
;
145 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
146 if (!snd_soc_codec_readable_register(codec
, i
))
148 if (codec
->driver
->display_register
) {
149 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
150 PAGE_SIZE
- count
, i
);
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total
+ len
>= count
- 1)
157 format_register_str(codec
, i
, buf
+ total
, len
);
164 total
= min(total
, count
- 1);
169 static ssize_t
codec_reg_show(struct device
*dev
,
170 struct device_attribute
*attr
, char *buf
)
172 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
174 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
177 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
179 static ssize_t
pmdown_time_show(struct device
*dev
,
180 struct device_attribute
*attr
, char *buf
)
182 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
184 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
187 static ssize_t
pmdown_time_set(struct device
*dev
,
188 struct device_attribute
*attr
,
189 const char *buf
, size_t count
)
191 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
194 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
201 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
203 #ifdef CONFIG_DEBUG_FS
204 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
205 size_t count
, loff_t
*ppos
)
208 struct snd_soc_codec
*codec
= file
->private_data
;
211 if (*ppos
< 0 || !count
)
214 buf
= kmalloc(count
, GFP_KERNEL
);
218 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
220 if (copy_to_user(user_buf
, buf
, ret
)) {
231 static ssize_t
codec_reg_write_file(struct file
*file
,
232 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
237 unsigned long reg
, value
;
238 struct snd_soc_codec
*codec
= file
->private_data
;
240 buf_size
= min(count
, (sizeof(buf
)-1));
241 if (copy_from_user(buf
, user_buf
, buf_size
))
245 while (*start
== ' ')
247 reg
= simple_strtoul(start
, &start
, 16);
248 while (*start
== ' ')
250 if (strict_strtoul(start
, 16, &value
))
253 /* Userspace has been fiddling around behind the kernel's back */
254 add_taint(TAINT_USER
);
256 snd_soc_write(codec
, reg
, value
);
260 static const struct file_operations codec_reg_fops
= {
262 .read
= codec_reg_read_file
,
263 .write
= codec_reg_write_file
,
264 .llseek
= default_llseek
,
267 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
269 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
271 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
273 if (!codec
->debugfs_codec_root
) {
274 dev_warn(codec
->dev
, "Failed to create codec debugfs directory\n");
278 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
280 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
283 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
284 codec
->debugfs_codec_root
,
285 codec
, &codec_reg_fops
);
286 if (!codec
->debugfs_reg
)
287 dev_warn(codec
->dev
, "Failed to create codec register debugfs file\n");
289 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
292 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
294 debugfs_remove_recursive(codec
->debugfs_codec_root
);
297 static void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
299 struct dentry
*debugfs_card_root
= platform
->card
->debugfs_card_root
;
301 platform
->debugfs_platform_root
= debugfs_create_dir(platform
->name
,
303 if (!platform
->debugfs_platform_root
) {
304 dev_warn(platform
->dev
,
305 "Failed to create platform debugfs directory\n");
309 snd_soc_dapm_debugfs_init(&platform
->dapm
,
310 platform
->debugfs_platform_root
);
313 static void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
315 debugfs_remove_recursive(platform
->debugfs_platform_root
);
318 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
319 size_t count
, loff_t
*ppos
)
321 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
322 ssize_t len
, ret
= 0;
323 struct snd_soc_codec
*codec
;
328 list_for_each_entry(codec
, &codec_list
, list
) {
329 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
333 if (ret
> PAGE_SIZE
) {
340 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
347 static const struct file_operations codec_list_fops
= {
348 .read
= codec_list_read_file
,
349 .llseek
= default_llseek
,/* read accesses f_pos */
352 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
353 size_t count
, loff_t
*ppos
)
355 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
356 ssize_t len
, ret
= 0;
357 struct snd_soc_dai
*dai
;
362 list_for_each_entry(dai
, &dai_list
, list
) {
363 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
366 if (ret
> PAGE_SIZE
) {
372 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
379 static const struct file_operations dai_list_fops
= {
380 .read
= dai_list_read_file
,
381 .llseek
= default_llseek
,/* read accesses f_pos */
384 static ssize_t
platform_list_read_file(struct file
*file
,
385 char __user
*user_buf
,
386 size_t count
, loff_t
*ppos
)
388 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
389 ssize_t len
, ret
= 0;
390 struct snd_soc_platform
*platform
;
395 list_for_each_entry(platform
, &platform_list
, list
) {
396 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
400 if (ret
> PAGE_SIZE
) {
406 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
413 static const struct file_operations platform_list_fops
= {
414 .read
= platform_list_read_file
,
415 .llseek
= default_llseek
,/* read accesses f_pos */
418 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
420 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
421 snd_soc_debugfs_root
);
422 if (!card
->debugfs_card_root
) {
424 "ASoC: Failed to create card debugfs directory\n");
428 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
429 card
->debugfs_card_root
,
431 if (!card
->debugfs_pop_time
)
433 "Failed to create pop time debugfs file\n");
436 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
438 debugfs_remove_recursive(card
->debugfs_card_root
);
443 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
447 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
451 static inline void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
455 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
459 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
463 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
468 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
469 const char *dai_link
, int stream
)
473 for (i
= 0; i
< card
->num_links
; i
++) {
474 if (card
->rtd
[i
].dai_link
->no_pcm
&&
475 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
476 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
478 dev_dbg(card
->dev
, "failed to find dai link %s\n", dai_link
);
481 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
483 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
484 const char *dai_link
)
488 for (i
= 0; i
< card
->num_links
; i
++) {
489 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
490 return &card
->rtd
[i
];
492 dev_dbg(card
->dev
, "failed to find rtd %s\n", dai_link
);
495 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
497 #ifdef CONFIG_SND_SOC_AC97_BUS
498 /* unregister ac97 codec */
499 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
501 if (codec
->ac97
->dev
.bus
)
502 device_unregister(&codec
->ac97
->dev
);
506 /* stop no dev release warning */
507 static void soc_ac97_device_release(struct device
*dev
){}
509 /* register ac97 codec to bus */
510 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
514 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
515 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
516 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
518 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
519 codec
->card
->snd_card
->number
, 0, codec
->name
);
520 err
= device_register(&codec
->ac97
->dev
);
522 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
523 codec
->ac97
->dev
.bus
= NULL
;
530 #ifdef CONFIG_PM_SLEEP
531 /* powers down audio subsystem for suspend */
532 int snd_soc_suspend(struct device
*dev
)
534 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
535 struct snd_soc_codec
*codec
;
538 /* If the initialization of this soc device failed, there is no codec
539 * associated with it. Just bail out in this case.
541 if (list_empty(&card
->codec_dev_list
))
544 /* Due to the resume being scheduled into a workqueue we could
545 * suspend before that's finished - wait for it to complete.
547 snd_power_lock(card
->snd_card
);
548 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
549 snd_power_unlock(card
->snd_card
);
551 /* we're going to block userspace touching us until resume completes */
552 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
554 /* mute any active DACs */
555 for (i
= 0; i
< card
->num_rtd
; i
++) {
556 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
557 struct snd_soc_dai_driver
*drv
= dai
->driver
;
559 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
562 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
563 drv
->ops
->digital_mute(dai
, 1);
566 /* suspend all pcms */
567 for (i
= 0; i
< card
->num_rtd
; i
++) {
568 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
571 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
574 if (card
->suspend_pre
)
575 card
->suspend_pre(card
);
577 for (i
= 0; i
< card
->num_rtd
; i
++) {
578 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
579 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
581 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
584 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
585 cpu_dai
->driver
->suspend(cpu_dai
);
586 if (platform
->driver
->suspend
&& !platform
->suspended
) {
587 platform
->driver
->suspend(cpu_dai
);
588 platform
->suspended
= 1;
592 /* close any waiting streams and save state */
593 for (i
= 0; i
< card
->num_rtd
; i
++) {
594 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
595 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
598 for (i
= 0; i
< card
->num_rtd
; i
++) {
600 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
603 snd_soc_dapm_stream_event(&card
->rtd
[i
],
604 SNDRV_PCM_STREAM_PLAYBACK
,
605 SND_SOC_DAPM_STREAM_SUSPEND
);
607 snd_soc_dapm_stream_event(&card
->rtd
[i
],
608 SNDRV_PCM_STREAM_CAPTURE
,
609 SND_SOC_DAPM_STREAM_SUSPEND
);
612 /* suspend all CODECs */
613 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
614 /* If there are paths active then the CODEC will be held with
615 * bias _ON and should not be suspended. */
616 if (!codec
->suspended
&& codec
->driver
->suspend
) {
617 switch (codec
->dapm
.bias_level
) {
618 case SND_SOC_BIAS_STANDBY
:
620 * If the CODEC is capable of idle
621 * bias off then being in STANDBY
622 * means it's doing something,
623 * otherwise fall through.
625 if (codec
->dapm
.idle_bias_off
) {
627 "idle_bias_off CODEC on over suspend\n");
630 case SND_SOC_BIAS_OFF
:
631 codec
->driver
->suspend(codec
);
632 codec
->suspended
= 1;
633 codec
->cache_sync
= 1;
636 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
642 for (i
= 0; i
< card
->num_rtd
; i
++) {
643 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
645 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
648 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
649 cpu_dai
->driver
->suspend(cpu_dai
);
652 if (card
->suspend_post
)
653 card
->suspend_post(card
);
657 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
659 /* deferred resume work, so resume can complete before we finished
660 * setting our codec back up, which can be very slow on I2C
662 static void soc_resume_deferred(struct work_struct
*work
)
664 struct snd_soc_card
*card
=
665 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
666 struct snd_soc_codec
*codec
;
669 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
670 * so userspace apps are blocked from touching us
673 dev_dbg(card
->dev
, "starting resume work\n");
675 /* Bring us up into D2 so that DAPM starts enabling things */
676 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
678 if (card
->resume_pre
)
679 card
->resume_pre(card
);
681 /* resume AC97 DAIs */
682 for (i
= 0; i
< card
->num_rtd
; i
++) {
683 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
685 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
688 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
689 cpu_dai
->driver
->resume(cpu_dai
);
692 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
693 /* If the CODEC was idle over suspend then it will have been
694 * left with bias OFF or STANDBY and suspended so we must now
695 * resume. Otherwise the suspend was suppressed.
697 if (codec
->driver
->resume
&& codec
->suspended
) {
698 switch (codec
->dapm
.bias_level
) {
699 case SND_SOC_BIAS_STANDBY
:
700 case SND_SOC_BIAS_OFF
:
701 codec
->driver
->resume(codec
);
702 codec
->suspended
= 0;
705 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
711 for (i
= 0; i
< card
->num_rtd
; i
++) {
713 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
716 snd_soc_dapm_stream_event(&card
->rtd
[i
],
717 SNDRV_PCM_STREAM_PLAYBACK
,
718 SND_SOC_DAPM_STREAM_RESUME
);
720 snd_soc_dapm_stream_event(&card
->rtd
[i
],
721 SNDRV_PCM_STREAM_CAPTURE
,
722 SND_SOC_DAPM_STREAM_RESUME
);
725 /* unmute any active DACs */
726 for (i
= 0; i
< card
->num_rtd
; i
++) {
727 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
728 struct snd_soc_dai_driver
*drv
= dai
->driver
;
730 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
733 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
734 drv
->ops
->digital_mute(dai
, 0);
737 for (i
= 0; i
< card
->num_rtd
; i
++) {
738 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
739 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
741 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
744 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
745 cpu_dai
->driver
->resume(cpu_dai
);
746 if (platform
->driver
->resume
&& platform
->suspended
) {
747 platform
->driver
->resume(cpu_dai
);
748 platform
->suspended
= 0;
752 if (card
->resume_post
)
753 card
->resume_post(card
);
755 dev_dbg(card
->dev
, "resume work completed\n");
757 /* userspace can access us now we are back as we were before */
758 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
761 /* powers up audio subsystem after a suspend */
762 int snd_soc_resume(struct device
*dev
)
764 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
765 int i
, ac97_control
= 0;
767 /* If the initialization of this soc device failed, there is no codec
768 * associated with it. Just bail out in this case.
770 if (list_empty(&card
->codec_dev_list
))
773 /* AC97 devices might have other drivers hanging off them so
774 * need to resume immediately. Other drivers don't have that
775 * problem and may take a substantial amount of time to resume
776 * due to I/O costs and anti-pop so handle them out of line.
778 for (i
= 0; i
< card
->num_rtd
; i
++) {
779 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
780 ac97_control
|= cpu_dai
->driver
->ac97_control
;
783 dev_dbg(dev
, "Resuming AC97 immediately\n");
784 soc_resume_deferred(&card
->deferred_resume_work
);
786 dev_dbg(dev
, "Scheduling resume work\n");
787 if (!schedule_work(&card
->deferred_resume_work
))
788 dev_err(dev
, "resume work item may be lost\n");
793 EXPORT_SYMBOL_GPL(snd_soc_resume
);
795 #define snd_soc_suspend NULL
796 #define snd_soc_resume NULL
799 static const struct snd_soc_dai_ops null_dai_ops
= {
802 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
804 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
805 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
806 struct snd_soc_codec
*codec
;
807 struct snd_soc_platform
*platform
;
808 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
809 const char *platform_name
;
811 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
813 /* Find CPU DAI from registered DAIs*/
814 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
815 if (dai_link
->cpu_of_node
&&
816 (cpu_dai
->dev
->of_node
!= dai_link
->cpu_of_node
))
818 if (dai_link
->cpu_name
&&
819 strcmp(dev_name(cpu_dai
->dev
), dai_link
->cpu_name
))
821 if (dai_link
->cpu_dai_name
&&
822 strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
825 rtd
->cpu_dai
= cpu_dai
;
829 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
830 dai_link
->cpu_dai_name
);
831 return -EPROBE_DEFER
;
834 /* Find CODEC from registered CODECs */
835 list_for_each_entry(codec
, &codec_list
, list
) {
836 if (dai_link
->codec_of_node
) {
837 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
840 if (strcmp(codec
->name
, dai_link
->codec_name
))
847 * CODEC found, so find CODEC DAI from registered DAIs from
850 list_for_each_entry(codec_dai
, &dai_list
, list
) {
851 if (codec
->dev
== codec_dai
->dev
&&
852 !strcmp(codec_dai
->name
,
853 dai_link
->codec_dai_name
)) {
855 rtd
->codec_dai
= codec_dai
;
859 if (!rtd
->codec_dai
) {
860 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
861 dai_link
->codec_dai_name
);
862 return -EPROBE_DEFER
;
867 dev_dbg(card
->dev
, "CODEC %s not registered\n",
868 dai_link
->codec_name
);
869 return -EPROBE_DEFER
;
872 /* if there's no platform we match on the empty platform */
873 platform_name
= dai_link
->platform_name
;
874 if (!platform_name
&& !dai_link
->platform_of_node
)
875 platform_name
= "snd-soc-dummy";
877 /* find one from the set of registered platforms */
878 list_for_each_entry(platform
, &platform_list
, list
) {
879 if (dai_link
->platform_of_node
) {
880 if (platform
->dev
->of_node
!=
881 dai_link
->platform_of_node
)
884 if (strcmp(platform
->name
, platform_name
))
888 rtd
->platform
= platform
;
890 if (!rtd
->platform
) {
891 dev_dbg(card
->dev
, "platform %s not registered\n",
892 dai_link
->platform_name
);
893 return -EPROBE_DEFER
;
901 static void soc_remove_codec(struct snd_soc_codec
*codec
)
905 if (codec
->driver
->remove
) {
906 err
= codec
->driver
->remove(codec
);
909 "asoc: failed to remove %s: %d\n",
913 /* Make sure all DAPM widgets are freed */
914 snd_soc_dapm_free(&codec
->dapm
);
916 soc_cleanup_codec_debugfs(codec
);
918 list_del(&codec
->card_list
);
919 module_put(codec
->dev
->driver
->owner
);
922 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
924 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
925 struct snd_soc_codec
*codec
= rtd
->codec
;
926 struct snd_soc_platform
*platform
= rtd
->platform
;
927 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
930 /* unregister the rtd device */
931 if (rtd
->dev_registered
) {
932 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
933 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
934 device_unregister(rtd
->dev
);
935 rtd
->dev_registered
= 0;
938 /* remove the CODEC DAI */
939 if (codec_dai
&& codec_dai
->probed
&&
940 codec_dai
->driver
->remove_order
== order
) {
941 if (codec_dai
->driver
->remove
) {
942 err
= codec_dai
->driver
->remove(codec_dai
);
944 pr_err("asoc: failed to remove %s: %d\n",
945 codec_dai
->name
, err
);
947 codec_dai
->probed
= 0;
948 list_del(&codec_dai
->card_list
);
951 /* remove the platform */
952 if (platform
&& platform
->probed
&&
953 platform
->driver
->remove_order
== order
) {
954 if (platform
->driver
->remove
) {
955 err
= platform
->driver
->remove(platform
);
957 pr_err("asoc: failed to remove %s: %d\n",
958 platform
->name
, err
);
961 /* Make sure all DAPM widgets are freed */
962 snd_soc_dapm_free(&platform
->dapm
);
964 soc_cleanup_platform_debugfs(platform
);
965 platform
->probed
= 0;
966 list_del(&platform
->card_list
);
967 module_put(platform
->dev
->driver
->owner
);
970 /* remove the CODEC */
971 if (codec
&& codec
->probed
&&
972 codec
->driver
->remove_order
== order
)
973 soc_remove_codec(codec
);
975 /* remove the cpu_dai */
976 if (cpu_dai
&& cpu_dai
->probed
&&
977 cpu_dai
->driver
->remove_order
== order
) {
978 if (cpu_dai
->driver
->remove
) {
979 err
= cpu_dai
->driver
->remove(cpu_dai
);
981 pr_err("asoc: failed to remove %s: %d\n",
985 list_del(&cpu_dai
->card_list
);
988 module_put(cpu_dai
->dev
->driver
->owner
);
992 static void soc_remove_dai_links(struct snd_soc_card
*card
)
996 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
998 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
999 soc_remove_dai_link(card
, dai
, order
);
1004 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1005 struct snd_soc_codec
*codec
)
1009 if (card
->codec_conf
== NULL
)
1012 for (i
= 0; i
< card
->num_configs
; i
++) {
1013 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1014 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1015 codec
->name_prefix
= map
->name_prefix
;
1021 static int soc_probe_codec(struct snd_soc_card
*card
,
1022 struct snd_soc_codec
*codec
)
1025 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1026 struct snd_soc_dai
*dai
;
1029 codec
->dapm
.card
= card
;
1030 soc_set_name_prefix(card
, codec
);
1032 if (!try_module_get(codec
->dev
->driver
->owner
))
1035 soc_init_codec_debugfs(codec
);
1037 if (driver
->dapm_widgets
)
1038 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1039 driver
->num_dapm_widgets
);
1041 /* Create DAPM widgets for each DAI stream */
1042 list_for_each_entry(dai
, &dai_list
, list
) {
1043 if (dai
->dev
!= codec
->dev
)
1046 snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1049 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1051 if (driver
->probe
) {
1052 ret
= driver
->probe(codec
);
1055 "asoc: failed to probe CODEC %s: %d\n",
1061 if (driver
->controls
)
1062 snd_soc_add_codec_controls(codec
, driver
->controls
,
1063 driver
->num_controls
);
1064 if (driver
->dapm_routes
)
1065 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1066 driver
->num_dapm_routes
);
1068 /* mark codec as probed and add to card codec list */
1070 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1071 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1076 soc_cleanup_codec_debugfs(codec
);
1077 module_put(codec
->dev
->driver
->owner
);
1082 static int soc_probe_platform(struct snd_soc_card
*card
,
1083 struct snd_soc_platform
*platform
)
1086 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1087 struct snd_soc_dai
*dai
;
1089 platform
->card
= card
;
1090 platform
->dapm
.card
= card
;
1092 if (!try_module_get(platform
->dev
->driver
->owner
))
1095 soc_init_platform_debugfs(platform
);
1097 if (driver
->dapm_widgets
)
1098 snd_soc_dapm_new_controls(&platform
->dapm
,
1099 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1101 /* Create DAPM widgets for each DAI stream */
1102 list_for_each_entry(dai
, &dai_list
, list
) {
1103 if (dai
->dev
!= platform
->dev
)
1106 snd_soc_dapm_new_dai_widgets(&platform
->dapm
, dai
);
1109 platform
->dapm
.idle_bias_off
= 1;
1111 if (driver
->probe
) {
1112 ret
= driver
->probe(platform
);
1114 dev_err(platform
->dev
,
1115 "asoc: failed to probe platform %s: %d\n",
1116 platform
->name
, ret
);
1121 if (driver
->controls
)
1122 snd_soc_add_platform_controls(platform
, driver
->controls
,
1123 driver
->num_controls
);
1124 if (driver
->dapm_routes
)
1125 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1126 driver
->num_dapm_routes
);
1128 /* mark platform as probed and add to card platform list */
1129 platform
->probed
= 1;
1130 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1131 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1136 soc_cleanup_platform_debugfs(platform
);
1137 module_put(platform
->dev
->driver
->owner
);
1142 static void rtd_release(struct device
*dev
)
1147 static int soc_post_component_init(struct snd_soc_card
*card
,
1148 struct snd_soc_codec
*codec
,
1149 int num
, int dailess
)
1151 struct snd_soc_dai_link
*dai_link
= NULL
;
1152 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1153 struct snd_soc_pcm_runtime
*rtd
;
1154 const char *temp
, *name
;
1158 dai_link
= &card
->dai_link
[num
];
1159 rtd
= &card
->rtd
[num
];
1160 name
= dai_link
->name
;
1162 aux_dev
= &card
->aux_dev
[num
];
1163 rtd
= &card
->rtd_aux
[num
];
1164 name
= aux_dev
->name
;
1168 /* Make sure all DAPM widgets are instantiated */
1169 snd_soc_dapm_new_widgets(&codec
->dapm
);
1171 /* machine controls, routes and widgets are not prefixed */
1172 temp
= codec
->name_prefix
;
1173 codec
->name_prefix
= NULL
;
1175 /* do machine specific initialization */
1176 if (!dailess
&& dai_link
->init
)
1177 ret
= dai_link
->init(rtd
);
1178 else if (dailess
&& aux_dev
->init
)
1179 ret
= aux_dev
->init(&codec
->dapm
);
1181 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1184 codec
->name_prefix
= temp
;
1186 /* register the rtd device */
1189 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1192 device_initialize(rtd
->dev
);
1193 rtd
->dev
->parent
= card
->dev
;
1194 rtd
->dev
->release
= rtd_release
;
1195 rtd
->dev
->init_name
= name
;
1196 dev_set_drvdata(rtd
->dev
, rtd
);
1197 mutex_init(&rtd
->pcm_mutex
);
1198 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1199 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1200 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1201 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1202 ret
= device_add(rtd
->dev
);
1205 "asoc: failed to register runtime device: %d\n", ret
);
1208 rtd
->dev_registered
= 1;
1210 /* add DAPM sysfs entries for this codec */
1211 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1214 "asoc: failed to add codec dapm sysfs entries: %d\n",
1217 /* add codec sysfs entries */
1218 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1221 "asoc: failed to add codec sysfs files: %d\n", ret
);
1223 #ifdef CONFIG_DEBUG_FS
1224 /* add DPCM sysfs entries */
1225 if (!dailess
&& !dai_link
->dynamic
)
1228 ret
= soc_dpcm_debugfs_add(rtd
);
1230 dev_err(rtd
->dev
, "asoc: failed to add dpcm sysfs entries: %d\n", ret
);
1237 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1239 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1240 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1241 struct snd_soc_codec
*codec
= rtd
->codec
;
1242 struct snd_soc_platform
*platform
= rtd
->platform
;
1243 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1244 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1245 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1248 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1249 card
->name
, num
, order
);
1251 /* config components */
1252 cpu_dai
->platform
= platform
;
1253 codec_dai
->card
= card
;
1254 cpu_dai
->card
= card
;
1256 /* set default power off timeout */
1257 rtd
->pmdown_time
= pmdown_time
;
1259 /* probe the cpu_dai */
1260 if (!cpu_dai
->probed
&&
1261 cpu_dai
->driver
->probe_order
== order
) {
1262 if (!cpu_dai
->codec
) {
1263 cpu_dai
->dapm
.card
= card
;
1264 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1267 snd_soc_dapm_new_dai_widgets(&cpu_dai
->dapm
, cpu_dai
);
1270 if (cpu_dai
->driver
->probe
) {
1271 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1273 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1274 cpu_dai
->name
, ret
);
1275 module_put(cpu_dai
->dev
->driver
->owner
);
1279 cpu_dai
->probed
= 1;
1280 /* mark cpu_dai as probed and add to card dai list */
1281 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1284 /* probe the CODEC */
1285 if (!codec
->probed
&&
1286 codec
->driver
->probe_order
== order
) {
1287 ret
= soc_probe_codec(card
, codec
);
1292 /* probe the platform */
1293 if (!platform
->probed
&&
1294 platform
->driver
->probe_order
== order
) {
1295 ret
= soc_probe_platform(card
, platform
);
1300 /* probe the CODEC DAI */
1301 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1302 if (codec_dai
->driver
->probe
) {
1303 ret
= codec_dai
->driver
->probe(codec_dai
);
1305 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1306 codec_dai
->name
, ret
);
1311 /* mark codec_dai as probed and add to card dai list */
1312 codec_dai
->probed
= 1;
1313 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1316 /* complete DAI probe during last probe */
1317 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1320 ret
= soc_post_component_init(card
, codec
, num
, 0);
1324 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1326 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret
);
1328 if (!dai_link
->params
) {
1329 /* create the pcm */
1330 ret
= soc_new_pcm(rtd
, num
);
1332 pr_err("asoc: can't create pcm %s :%d\n",
1333 dai_link
->stream_name
, ret
);
1337 /* link the DAI widgets */
1338 play_w
= codec_dai
->playback_widget
;
1339 capture_w
= cpu_dai
->capture_widget
;
1340 if (play_w
&& capture_w
) {
1341 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1344 dev_err(card
->dev
, "Can't link %s to %s: %d\n",
1345 play_w
->name
, capture_w
->name
, ret
);
1350 play_w
= cpu_dai
->playback_widget
;
1351 capture_w
= codec_dai
->capture_widget
;
1352 if (play_w
&& capture_w
) {
1353 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1356 dev_err(card
->dev
, "Can't link %s to %s: %d\n",
1357 play_w
->name
, capture_w
->name
, ret
);
1363 /* add platform data for AC97 devices */
1364 if (rtd
->codec_dai
->driver
->ac97_control
)
1365 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1370 #ifdef CONFIG_SND_SOC_AC97_BUS
1371 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1375 /* Only instantiate AC97 if not already done by the adaptor
1376 * for the generic AC97 subsystem.
1378 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1380 * It is possible that the AC97 device is already registered to
1381 * the device subsystem. This happens when the device is created
1382 * via snd_ac97_mixer(). Currently only SoC codec that does so
1383 * is the generic AC97 glue but others migh emerge.
1385 * In those cases we don't try to register the device again.
1387 if (!rtd
->codec
->ac97_created
)
1390 ret
= soc_ac97_dev_register(rtd
->codec
);
1392 pr_err("asoc: AC97 device register failed:%d\n", ret
);
1396 rtd
->codec
->ac97_registered
= 1;
1401 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1403 if (codec
->ac97_registered
) {
1404 soc_ac97_dev_unregister(codec
);
1405 codec
->ac97_registered
= 0;
1410 static int soc_check_aux_dev(struct snd_soc_card
*card
, int num
)
1412 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1413 struct snd_soc_codec
*codec
;
1415 /* find CODEC from registered CODECs*/
1416 list_for_each_entry(codec
, &codec_list
, list
) {
1417 if (!strcmp(codec
->name
, aux_dev
->codec_name
))
1421 return -EPROBE_DEFER
;
1424 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1426 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1427 struct snd_soc_codec
*codec
;
1430 /* find CODEC from registered CODECs*/
1431 list_for_each_entry(codec
, &codec_list
, list
) {
1432 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1433 if (codec
->probed
) {
1435 "asoc: codec already probed");
1442 /* codec not found */
1443 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1444 return -EPROBE_DEFER
;
1447 ret
= soc_probe_codec(card
, codec
);
1451 ret
= soc_post_component_init(card
, codec
, num
, 1);
1457 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1459 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1460 struct snd_soc_codec
*codec
= rtd
->codec
;
1462 /* unregister the rtd device */
1463 if (rtd
->dev_registered
) {
1464 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1465 device_del(rtd
->dev
);
1466 rtd
->dev_registered
= 0;
1469 if (codec
&& codec
->probed
)
1470 soc_remove_codec(codec
);
1473 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1474 enum snd_soc_compress_type compress_type
)
1478 if (codec
->cache_init
)
1481 /* override the compress_type if necessary */
1482 if (compress_type
&& codec
->compress_type
!= compress_type
)
1483 codec
->compress_type
= compress_type
;
1484 ret
= snd_soc_cache_init(codec
);
1486 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1490 codec
->cache_init
= 1;
1494 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1496 struct snd_soc_codec
*codec
;
1497 struct snd_soc_codec_conf
*codec_conf
;
1498 enum snd_soc_compress_type compress_type
;
1499 struct snd_soc_dai_link
*dai_link
;
1500 int ret
, i
, order
, dai_fmt
;
1502 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1505 for (i
= 0; i
< card
->num_links
; i
++) {
1506 ret
= soc_bind_dai_link(card
, i
);
1511 /* check aux_devs too */
1512 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1513 ret
= soc_check_aux_dev(card
, i
);
1518 /* initialize the register cache for each available codec */
1519 list_for_each_entry(codec
, &codec_list
, list
) {
1520 if (codec
->cache_init
)
1522 /* by default we don't override the compress_type */
1524 /* check to see if we need to override the compress_type */
1525 for (i
= 0; i
< card
->num_configs
; ++i
) {
1526 codec_conf
= &card
->codec_conf
[i
];
1527 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1528 compress_type
= codec_conf
->compress_type
;
1529 if (compress_type
&& compress_type
1530 != codec
->compress_type
)
1534 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1539 /* card bind complete so register a sound card */
1540 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1541 card
->owner
, 0, &card
->snd_card
);
1543 pr_err("asoc: can't create sound card for card %s: %d\n",
1547 card
->snd_card
->dev
= card
->dev
;
1549 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1550 card
->dapm
.dev
= card
->dev
;
1551 card
->dapm
.card
= card
;
1552 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1554 #ifdef CONFIG_DEBUG_FS
1555 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1558 #ifdef CONFIG_PM_SLEEP
1559 /* deferred resume work */
1560 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1563 if (card
->dapm_widgets
)
1564 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1565 card
->num_dapm_widgets
);
1567 /* initialise the sound card only once */
1569 ret
= card
->probe(card
);
1571 goto card_probe_error
;
1574 /* early DAI link probe */
1575 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1577 for (i
= 0; i
< card
->num_links
; i
++) {
1578 ret
= soc_probe_dai_link(card
, i
, order
);
1580 pr_err("asoc: failed to instantiate card %s: %d\n",
1587 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1588 ret
= soc_probe_aux_dev(card
, i
);
1590 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1592 goto probe_aux_dev_err
;
1596 snd_soc_dapm_link_dai_widgets(card
);
1599 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1601 if (card
->dapm_routes
)
1602 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1603 card
->num_dapm_routes
);
1605 snd_soc_dapm_new_widgets(&card
->dapm
);
1607 for (i
= 0; i
< card
->num_links
; i
++) {
1608 dai_link
= &card
->dai_link
[i
];
1609 dai_fmt
= dai_link
->dai_fmt
;
1612 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1614 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1615 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1616 "Failed to set DAI format: %d\n",
1620 /* If this is a regular CPU link there will be a platform */
1622 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1623 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1625 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1626 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1627 "Failed to set DAI format: %d\n",
1629 } else if (dai_fmt
) {
1630 /* Flip the polarity for the "CPU" end */
1631 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1632 switch (dai_link
->dai_fmt
&
1633 SND_SOC_DAIFMT_MASTER_MASK
) {
1634 case SND_SOC_DAIFMT_CBM_CFM
:
1635 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1637 case SND_SOC_DAIFMT_CBM_CFS
:
1638 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1640 case SND_SOC_DAIFMT_CBS_CFM
:
1641 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1643 case SND_SOC_DAIFMT_CBS_CFS
:
1644 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1648 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1650 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1651 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1652 "Failed to set DAI format: %d\n",
1657 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1659 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1660 "%s", card
->long_name
? card
->long_name
: card
->name
);
1661 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1662 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1663 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1664 switch (card
->snd_card
->driver
[i
]) {
1670 if (!isalnum(card
->snd_card
->driver
[i
]))
1671 card
->snd_card
->driver
[i
] = '_';
1676 if (card
->late_probe
) {
1677 ret
= card
->late_probe(card
);
1679 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1681 goto probe_aux_dev_err
;
1685 snd_soc_dapm_new_widgets(&card
->dapm
);
1687 if (card
->fully_routed
)
1688 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1689 snd_soc_dapm_auto_nc_codec_pins(codec
);
1691 ret
= snd_card_register(card
->snd_card
);
1693 pr_err("asoc: failed to register soundcard for %s: %d\n",
1695 goto probe_aux_dev_err
;
1698 #ifdef CONFIG_SND_SOC_AC97_BUS
1699 /* register any AC97 codecs */
1700 for (i
= 0; i
< card
->num_rtd
; i
++) {
1701 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1703 pr_err("asoc: failed to register AC97 %s: %d\n",
1706 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1707 goto probe_aux_dev_err
;
1712 card
->instantiated
= 1;
1713 snd_soc_dapm_sync(&card
->dapm
);
1714 mutex_unlock(&card
->mutex
);
1719 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1720 soc_remove_aux_dev(card
, i
);
1723 soc_remove_dai_links(card
);
1729 snd_card_free(card
->snd_card
);
1732 mutex_unlock(&card
->mutex
);
1737 /* probes a new socdev */
1738 static int soc_probe(struct platform_device
*pdev
)
1740 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1744 * no card, so machine driver should be registering card
1745 * we should not be here in that case so ret error
1750 dev_warn(&pdev
->dev
,
1751 "ASoC machine %s should use snd_soc_register_card()\n",
1754 /* Bodge while we unpick instantiation */
1755 card
->dev
= &pdev
->dev
;
1757 ret
= snd_soc_register_card(card
);
1759 dev_err(&pdev
->dev
, "Failed to register card\n");
1766 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1770 /* make sure any delayed work runs */
1771 for (i
= 0; i
< card
->num_rtd
; i
++) {
1772 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1773 flush_delayed_work_sync(&rtd
->delayed_work
);
1776 /* remove auxiliary devices */
1777 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1778 soc_remove_aux_dev(card
, i
);
1780 /* remove and free each DAI */
1781 soc_remove_dai_links(card
);
1783 soc_cleanup_card_debugfs(card
);
1785 /* remove the card */
1789 snd_soc_dapm_free(&card
->dapm
);
1791 snd_card_free(card
->snd_card
);
1796 /* removes a socdev */
1797 static int soc_remove(struct platform_device
*pdev
)
1799 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1801 snd_soc_unregister_card(card
);
1805 int snd_soc_poweroff(struct device
*dev
)
1807 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1810 if (!card
->instantiated
)
1813 /* Flush out pmdown_time work - we actually do want to run it
1814 * now, we're shutting down so no imminent restart. */
1815 for (i
= 0; i
< card
->num_rtd
; i
++) {
1816 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1817 flush_delayed_work_sync(&rtd
->delayed_work
);
1820 snd_soc_dapm_shutdown(card
);
1824 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1826 const struct dev_pm_ops snd_soc_pm_ops
= {
1827 .suspend
= snd_soc_suspend
,
1828 .resume
= snd_soc_resume
,
1829 .freeze
= snd_soc_suspend
,
1830 .thaw
= snd_soc_resume
,
1831 .poweroff
= snd_soc_poweroff
,
1832 .restore
= snd_soc_resume
,
1834 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1836 /* ASoC platform driver */
1837 static struct platform_driver soc_driver
= {
1839 .name
= "soc-audio",
1840 .owner
= THIS_MODULE
,
1841 .pm
= &snd_soc_pm_ops
,
1844 .remove
= soc_remove
,
1848 * snd_soc_codec_volatile_register: Report if a register is volatile.
1850 * @codec: CODEC to query.
1851 * @reg: Register to query.
1853 * Boolean function indiciating if a CODEC register is volatile.
1855 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1858 if (codec
->volatile_register
)
1859 return codec
->volatile_register(codec
, reg
);
1863 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1866 * snd_soc_codec_readable_register: Report if a register is readable.
1868 * @codec: CODEC to query.
1869 * @reg: Register to query.
1871 * Boolean function indicating if a CODEC register is readable.
1873 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1876 if (codec
->readable_register
)
1877 return codec
->readable_register(codec
, reg
);
1881 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1884 * snd_soc_codec_writable_register: Report if a register is writable.
1886 * @codec: CODEC to query.
1887 * @reg: Register to query.
1889 * Boolean function indicating if a CODEC register is writable.
1891 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
1894 if (codec
->writable_register
)
1895 return codec
->writable_register(codec
, reg
);
1899 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
1901 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
1906 if (!platform
->driver
->read
) {
1907 dev_err(platform
->dev
, "platform has no read back\n");
1911 ret
= platform
->driver
->read(platform
, reg
);
1912 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
1913 trace_snd_soc_preg_read(platform
, reg
, ret
);
1917 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1919 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1920 unsigned int reg
, unsigned int val
)
1922 if (!platform
->driver
->write
) {
1923 dev_err(platform
->dev
, "platform has no write back\n");
1927 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1928 trace_snd_soc_preg_write(platform
, reg
, val
);
1929 return platform
->driver
->write(platform
, reg
, val
);
1931 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1934 * snd_soc_new_ac97_codec - initailise AC97 device
1935 * @codec: audio codec
1936 * @ops: AC97 bus operations
1937 * @num: AC97 codec number
1939 * Initialises AC97 codec resources for use by ad-hoc devices only.
1941 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1942 struct snd_ac97_bus_ops
*ops
, int num
)
1944 mutex_lock(&codec
->mutex
);
1946 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1947 if (codec
->ac97
== NULL
) {
1948 mutex_unlock(&codec
->mutex
);
1952 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1953 if (codec
->ac97
->bus
== NULL
) {
1956 mutex_unlock(&codec
->mutex
);
1960 codec
->ac97
->bus
->ops
= ops
;
1961 codec
->ac97
->num
= num
;
1964 * Mark the AC97 device to be created by us. This way we ensure that the
1965 * device will be registered with the device subsystem later on.
1967 codec
->ac97_created
= 1;
1969 mutex_unlock(&codec
->mutex
);
1972 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1975 * snd_soc_free_ac97_codec - free AC97 codec device
1976 * @codec: audio codec
1978 * Frees AC97 codec device resources.
1980 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1982 mutex_lock(&codec
->mutex
);
1983 #ifdef CONFIG_SND_SOC_AC97_BUS
1984 soc_unregister_ac97_dai_link(codec
);
1986 kfree(codec
->ac97
->bus
);
1989 codec
->ac97_created
= 0;
1990 mutex_unlock(&codec
->mutex
);
1992 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1994 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1998 ret
= codec
->read(codec
, reg
);
1999 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2000 trace_snd_soc_reg_read(codec
, reg
, ret
);
2004 EXPORT_SYMBOL_GPL(snd_soc_read
);
2006 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2007 unsigned int reg
, unsigned int val
)
2009 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2010 trace_snd_soc_reg_write(codec
, reg
, val
);
2011 return codec
->write(codec
, reg
, val
);
2013 EXPORT_SYMBOL_GPL(snd_soc_write
);
2015 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2016 unsigned int reg
, const void *data
, size_t len
)
2018 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2020 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2023 * snd_soc_update_bits - update codec register bits
2024 * @codec: audio codec
2025 * @reg: codec register
2026 * @mask: register mask
2029 * Writes new register value.
2031 * Returns 1 for change, 0 for no change, or negative error code.
2033 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2034 unsigned int mask
, unsigned int value
)
2037 unsigned int old
, new;
2040 if (codec
->using_regmap
) {
2041 ret
= regmap_update_bits_check(codec
->control_data
, reg
,
2042 mask
, value
, &change
);
2044 ret
= snd_soc_read(codec
, reg
);
2049 new = (old
& ~mask
) | (value
& mask
);
2050 change
= old
!= new;
2052 ret
= snd_soc_write(codec
, reg
, new);
2060 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2063 * snd_soc_update_bits_locked - update codec register bits
2064 * @codec: audio codec
2065 * @reg: codec register
2066 * @mask: register mask
2069 * Writes new register value, and takes the codec mutex.
2071 * Returns 1 for change else 0.
2073 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2074 unsigned short reg
, unsigned int mask
,
2079 mutex_lock(&codec
->mutex
);
2080 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2081 mutex_unlock(&codec
->mutex
);
2085 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2088 * snd_soc_test_bits - test register for change
2089 * @codec: audio codec
2090 * @reg: codec register
2091 * @mask: register mask
2094 * Tests a register with a new value and checks if the new value is
2095 * different from the old value.
2097 * Returns 1 for change else 0.
2099 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2100 unsigned int mask
, unsigned int value
)
2103 unsigned int old
, new;
2105 old
= snd_soc_read(codec
, reg
);
2106 new = (old
& ~mask
) | value
;
2107 change
= old
!= new;
2111 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2114 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2115 * @substream: the pcm substream
2116 * @hw: the hardware parameters
2118 * Sets the substream runtime hardware parameters.
2120 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2121 const struct snd_pcm_hardware
*hw
)
2123 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2124 runtime
->hw
.info
= hw
->info
;
2125 runtime
->hw
.formats
= hw
->formats
;
2126 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2127 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2128 runtime
->hw
.periods_min
= hw
->periods_min
;
2129 runtime
->hw
.periods_max
= hw
->periods_max
;
2130 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2131 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2134 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2137 * snd_soc_cnew - create new control
2138 * @_template: control template
2139 * @data: control private data
2140 * @long_name: control long name
2141 * @prefix: control name prefix
2143 * Create a new mixer control from a template control.
2145 * Returns 0 for success, else error.
2147 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2148 void *data
, const char *long_name
,
2151 struct snd_kcontrol_new
template;
2152 struct snd_kcontrol
*kcontrol
;
2156 memcpy(&template, _template
, sizeof(template));
2160 long_name
= template.name
;
2163 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2164 name
= kmalloc(name_len
, GFP_KERNEL
);
2168 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2170 template.name
= name
;
2172 template.name
= long_name
;
2175 kcontrol
= snd_ctl_new1(&template, data
);
2181 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2183 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2184 const struct snd_kcontrol_new
*controls
, int num_controls
,
2185 const char *prefix
, void *data
)
2189 for (i
= 0; i
< num_controls
; i
++) {
2190 const struct snd_kcontrol_new
*control
= &controls
[i
];
2191 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2192 control
->name
, prefix
));
2194 dev_err(dev
, "Failed to add %s: %d\n", control
->name
, err
);
2203 * snd_soc_add_codec_controls - add an array of controls to a codec.
2204 * Convenience function to add a list of controls. Many codecs were
2205 * duplicating this code.
2207 * @codec: codec to add controls to
2208 * @controls: array of controls to add
2209 * @num_controls: number of elements in the array
2211 * Return 0 for success, else error.
2213 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2214 const struct snd_kcontrol_new
*controls
, int num_controls
)
2216 struct snd_card
*card
= codec
->card
->snd_card
;
2218 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2219 codec
->name_prefix
, codec
);
2221 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2224 * snd_soc_add_platform_controls - add an array of controls to a platform.
2225 * Convenience function to add a list of controls.
2227 * @platform: platform to add controls to
2228 * @controls: array of controls to add
2229 * @num_controls: number of elements in the array
2231 * Return 0 for success, else error.
2233 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2234 const struct snd_kcontrol_new
*controls
, int num_controls
)
2236 struct snd_card
*card
= platform
->card
->snd_card
;
2238 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2241 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2244 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2245 * Convenience function to add a list of controls.
2247 * @soc_card: SoC card to add controls to
2248 * @controls: array of controls to add
2249 * @num_controls: number of elements in the array
2251 * Return 0 for success, else error.
2253 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2254 const struct snd_kcontrol_new
*controls
, int num_controls
)
2256 struct snd_card
*card
= soc_card
->snd_card
;
2258 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2261 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2264 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2265 * Convienience function to add a list of controls.
2267 * @dai: DAI to add controls to
2268 * @controls: array of controls to add
2269 * @num_controls: number of elements in the array
2271 * Return 0 for success, else error.
2273 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2274 const struct snd_kcontrol_new
*controls
, int num_controls
)
2276 struct snd_card
*card
= dai
->card
->snd_card
;
2278 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2281 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2284 * snd_soc_info_enum_double - enumerated double mixer info callback
2285 * @kcontrol: mixer control
2286 * @uinfo: control element information
2288 * Callback to provide information about a double enumerated
2291 * Returns 0 for success.
2293 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2294 struct snd_ctl_elem_info
*uinfo
)
2296 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2298 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2299 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2300 uinfo
->value
.enumerated
.items
= e
->max
;
2302 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2303 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2304 strcpy(uinfo
->value
.enumerated
.name
,
2305 e
->texts
[uinfo
->value
.enumerated
.item
]);
2308 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2311 * snd_soc_get_enum_double - enumerated double mixer get callback
2312 * @kcontrol: mixer control
2313 * @ucontrol: control element information
2315 * Callback to get the value of a double enumerated mixer.
2317 * Returns 0 for success.
2319 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2320 struct snd_ctl_elem_value
*ucontrol
)
2322 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2323 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2324 unsigned int val
, bitmask
;
2326 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2328 val
= snd_soc_read(codec
, e
->reg
);
2329 ucontrol
->value
.enumerated
.item
[0]
2330 = (val
>> e
->shift_l
) & (bitmask
- 1);
2331 if (e
->shift_l
!= e
->shift_r
)
2332 ucontrol
->value
.enumerated
.item
[1] =
2333 (val
>> e
->shift_r
) & (bitmask
- 1);
2337 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2340 * snd_soc_put_enum_double - enumerated double mixer put callback
2341 * @kcontrol: mixer control
2342 * @ucontrol: control element information
2344 * Callback to set the value of a double enumerated mixer.
2346 * Returns 0 for success.
2348 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2349 struct snd_ctl_elem_value
*ucontrol
)
2351 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2352 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2354 unsigned int mask
, bitmask
;
2356 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2358 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2360 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2361 mask
= (bitmask
- 1) << e
->shift_l
;
2362 if (e
->shift_l
!= e
->shift_r
) {
2363 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2365 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2366 mask
|= (bitmask
- 1) << e
->shift_r
;
2369 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2371 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2374 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2375 * @kcontrol: mixer control
2376 * @ucontrol: control element information
2378 * Callback to get the value of a double semi enumerated mixer.
2380 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2381 * used for handling bitfield coded enumeration for example.
2383 * Returns 0 for success.
2385 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2386 struct snd_ctl_elem_value
*ucontrol
)
2388 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2389 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2390 unsigned int reg_val
, val
, mux
;
2392 reg_val
= snd_soc_read(codec
, e
->reg
);
2393 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2394 for (mux
= 0; mux
< e
->max
; mux
++) {
2395 if (val
== e
->values
[mux
])
2398 ucontrol
->value
.enumerated
.item
[0] = mux
;
2399 if (e
->shift_l
!= e
->shift_r
) {
2400 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2401 for (mux
= 0; mux
< e
->max
; mux
++) {
2402 if (val
== e
->values
[mux
])
2405 ucontrol
->value
.enumerated
.item
[1] = mux
;
2410 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2413 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2414 * @kcontrol: mixer control
2415 * @ucontrol: control element information
2417 * Callback to set the value of a double semi enumerated mixer.
2419 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2420 * used for handling bitfield coded enumeration for example.
2422 * Returns 0 for success.
2424 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2425 struct snd_ctl_elem_value
*ucontrol
)
2427 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2428 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2432 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2434 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2435 mask
= e
->mask
<< e
->shift_l
;
2436 if (e
->shift_l
!= e
->shift_r
) {
2437 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2439 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2440 mask
|= e
->mask
<< e
->shift_r
;
2443 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2445 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2448 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2449 * @kcontrol: mixer control
2450 * @uinfo: control element information
2452 * Callback to provide information about an external enumerated
2455 * Returns 0 for success.
2457 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2458 struct snd_ctl_elem_info
*uinfo
)
2460 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2462 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2464 uinfo
->value
.enumerated
.items
= e
->max
;
2466 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2467 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2468 strcpy(uinfo
->value
.enumerated
.name
,
2469 e
->texts
[uinfo
->value
.enumerated
.item
]);
2472 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2475 * snd_soc_info_volsw_ext - external single mixer info callback
2476 * @kcontrol: mixer control
2477 * @uinfo: control element information
2479 * Callback to provide information about a single external mixer control.
2481 * Returns 0 for success.
2483 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2484 struct snd_ctl_elem_info
*uinfo
)
2486 int max
= kcontrol
->private_value
;
2488 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2489 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2491 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2494 uinfo
->value
.integer
.min
= 0;
2495 uinfo
->value
.integer
.max
= max
;
2498 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2501 * snd_soc_info_volsw - single mixer info callback
2502 * @kcontrol: mixer control
2503 * @uinfo: control element information
2505 * Callback to provide information about a single mixer control, or a double
2506 * mixer control that spans 2 registers.
2508 * Returns 0 for success.
2510 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2511 struct snd_ctl_elem_info
*uinfo
)
2513 struct soc_mixer_control
*mc
=
2514 (struct soc_mixer_control
*)kcontrol
->private_value
;
2517 if (!mc
->platform_max
)
2518 mc
->platform_max
= mc
->max
;
2519 platform_max
= mc
->platform_max
;
2521 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2522 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2524 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2526 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2527 uinfo
->value
.integer
.min
= 0;
2528 uinfo
->value
.integer
.max
= platform_max
;
2531 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2534 * snd_soc_get_volsw - single mixer get callback
2535 * @kcontrol: mixer control
2536 * @ucontrol: control element information
2538 * Callback to get the value of a single mixer control, or a double mixer
2539 * control that spans 2 registers.
2541 * Returns 0 for success.
2543 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2544 struct snd_ctl_elem_value
*ucontrol
)
2546 struct soc_mixer_control
*mc
=
2547 (struct soc_mixer_control
*)kcontrol
->private_value
;
2548 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2549 unsigned int reg
= mc
->reg
;
2550 unsigned int reg2
= mc
->rreg
;
2551 unsigned int shift
= mc
->shift
;
2552 unsigned int rshift
= mc
->rshift
;
2554 unsigned int mask
= (1 << fls(max
)) - 1;
2555 unsigned int invert
= mc
->invert
;
2557 ucontrol
->value
.integer
.value
[0] =
2558 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2560 ucontrol
->value
.integer
.value
[0] =
2561 max
- ucontrol
->value
.integer
.value
[0];
2563 if (snd_soc_volsw_is_stereo(mc
)) {
2565 ucontrol
->value
.integer
.value
[1] =
2566 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2568 ucontrol
->value
.integer
.value
[1] =
2569 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2571 ucontrol
->value
.integer
.value
[1] =
2572 max
- ucontrol
->value
.integer
.value
[1];
2577 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2580 * snd_soc_put_volsw - single mixer put callback
2581 * @kcontrol: mixer control
2582 * @ucontrol: control element information
2584 * Callback to set the value of a single mixer control, or a double mixer
2585 * control that spans 2 registers.
2587 * Returns 0 for success.
2589 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2590 struct snd_ctl_elem_value
*ucontrol
)
2592 struct soc_mixer_control
*mc
=
2593 (struct soc_mixer_control
*)kcontrol
->private_value
;
2594 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2595 unsigned int reg
= mc
->reg
;
2596 unsigned int reg2
= mc
->rreg
;
2597 unsigned int shift
= mc
->shift
;
2598 unsigned int rshift
= mc
->rshift
;
2600 unsigned int mask
= (1 << fls(max
)) - 1;
2601 unsigned int invert
= mc
->invert
;
2604 unsigned int val2
= 0;
2605 unsigned int val
, val_mask
;
2607 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2610 val_mask
= mask
<< shift
;
2612 if (snd_soc_volsw_is_stereo(mc
)) {
2613 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2617 val_mask
|= mask
<< rshift
;
2618 val
|= val2
<< rshift
;
2620 val2
= val2
<< shift
;
2624 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2629 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2633 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2636 * snd_soc_get_volsw_sx - single mixer get callback
2637 * @kcontrol: mixer control
2638 * @ucontrol: control element information
2640 * Callback to get the value of a single mixer control, or a double mixer
2641 * control that spans 2 registers.
2643 * Returns 0 for success.
2645 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2646 struct snd_ctl_elem_value
*ucontrol
)
2648 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2649 struct soc_mixer_control
*mc
=
2650 (struct soc_mixer_control
*)kcontrol
->private_value
;
2652 unsigned int reg
= mc
->reg
;
2653 unsigned int reg2
= mc
->rreg
;
2654 unsigned int shift
= mc
->shift
;
2655 unsigned int rshift
= mc
->rshift
;
2658 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2660 ucontrol
->value
.integer
.value
[0] =
2661 ((snd_soc_read(codec
, reg
) >> shift
) - min
) & mask
;
2663 if (snd_soc_volsw_is_stereo(mc
))
2664 ucontrol
->value
.integer
.value
[1] =
2665 ((snd_soc_read(codec
, reg2
) >> rshift
) - min
) & mask
;
2669 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2672 * snd_soc_put_volsw_sx - double mixer set callback
2673 * @kcontrol: mixer control
2674 * @uinfo: control element information
2676 * Callback to set the value of a double mixer control that spans 2 registers.
2678 * Returns 0 for success.
2680 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2681 struct snd_ctl_elem_value
*ucontrol
)
2683 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2684 struct soc_mixer_control
*mc
=
2685 (struct soc_mixer_control
*)kcontrol
->private_value
;
2687 unsigned int reg
= mc
->reg
;
2688 unsigned int reg2
= mc
->rreg
;
2689 unsigned int shift
= mc
->shift
;
2690 unsigned int rshift
= mc
->rshift
;
2693 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2695 unsigned short val
, val_mask
, val2
= 0;
2697 val_mask
= mask
<< shift
;
2698 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2701 if (snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
))
2704 if (snd_soc_volsw_is_stereo(mc
)) {
2705 val_mask
= mask
<< rshift
;
2706 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2707 val2
= val2
<< rshift
;
2709 if (snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
))
2714 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2717 * snd_soc_info_volsw_s8 - signed mixer info callback
2718 * @kcontrol: mixer control
2719 * @uinfo: control element information
2721 * Callback to provide information about a signed mixer control.
2723 * Returns 0 for success.
2725 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2726 struct snd_ctl_elem_info
*uinfo
)
2728 struct soc_mixer_control
*mc
=
2729 (struct soc_mixer_control
*)kcontrol
->private_value
;
2733 if (!mc
->platform_max
)
2734 mc
->platform_max
= mc
->max
;
2735 platform_max
= mc
->platform_max
;
2737 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2739 uinfo
->value
.integer
.min
= 0;
2740 uinfo
->value
.integer
.max
= platform_max
- min
;
2743 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2746 * snd_soc_get_volsw_s8 - signed mixer get callback
2747 * @kcontrol: mixer control
2748 * @ucontrol: control element information
2750 * Callback to get the value of a signed mixer control.
2752 * Returns 0 for success.
2754 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2755 struct snd_ctl_elem_value
*ucontrol
)
2757 struct soc_mixer_control
*mc
=
2758 (struct soc_mixer_control
*)kcontrol
->private_value
;
2759 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2760 unsigned int reg
= mc
->reg
;
2762 int val
= snd_soc_read(codec
, reg
);
2764 ucontrol
->value
.integer
.value
[0] =
2765 ((signed char)(val
& 0xff))-min
;
2766 ucontrol
->value
.integer
.value
[1] =
2767 ((signed char)((val
>> 8) & 0xff))-min
;
2770 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2773 * snd_soc_put_volsw_sgn - signed mixer put callback
2774 * @kcontrol: mixer control
2775 * @ucontrol: control element information
2777 * Callback to set the value of a signed mixer control.
2779 * Returns 0 for success.
2781 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2782 struct snd_ctl_elem_value
*ucontrol
)
2784 struct soc_mixer_control
*mc
=
2785 (struct soc_mixer_control
*)kcontrol
->private_value
;
2786 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2787 unsigned int reg
= mc
->reg
;
2791 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2792 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2794 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2796 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2799 * snd_soc_info_volsw_range - single mixer info callback with range.
2800 * @kcontrol: mixer control
2801 * @uinfo: control element information
2803 * Callback to provide information, within a range, about a single
2806 * returns 0 for success.
2808 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
2809 struct snd_ctl_elem_info
*uinfo
)
2811 struct soc_mixer_control
*mc
=
2812 (struct soc_mixer_control
*)kcontrol
->private_value
;
2816 if (!mc
->platform_max
)
2817 mc
->platform_max
= mc
->max
;
2818 platform_max
= mc
->platform_max
;
2820 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2822 uinfo
->value
.integer
.min
= 0;
2823 uinfo
->value
.integer
.max
= platform_max
- min
;
2827 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
2830 * snd_soc_put_volsw_range - single mixer put value callback with range.
2831 * @kcontrol: mixer control
2832 * @ucontrol: control element information
2834 * Callback to set the value, within a range, for a single mixer control.
2836 * Returns 0 for success.
2838 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
2839 struct snd_ctl_elem_value
*ucontrol
)
2841 struct soc_mixer_control
*mc
=
2842 (struct soc_mixer_control
*)kcontrol
->private_value
;
2843 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2844 unsigned int reg
= mc
->reg
;
2845 unsigned int shift
= mc
->shift
;
2848 unsigned int mask
= (1 << fls(max
)) - 1;
2849 unsigned int invert
= mc
->invert
;
2850 unsigned int val
, val_mask
;
2852 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
2855 val_mask
= mask
<< shift
;
2858 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2860 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
2863 * snd_soc_get_volsw_range - single mixer get callback with range
2864 * @kcontrol: mixer control
2865 * @ucontrol: control element information
2867 * Callback to get the value, within a range, of a single mixer control.
2869 * Returns 0 for success.
2871 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
2872 struct snd_ctl_elem_value
*ucontrol
)
2874 struct soc_mixer_control
*mc
=
2875 (struct soc_mixer_control
*)kcontrol
->private_value
;
2876 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2877 unsigned int reg
= mc
->reg
;
2878 unsigned int shift
= mc
->shift
;
2881 unsigned int mask
= (1 << fls(max
)) - 1;
2882 unsigned int invert
= mc
->invert
;
2884 ucontrol
->value
.integer
.value
[0] =
2885 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2887 ucontrol
->value
.integer
.value
[0] =
2888 max
- ucontrol
->value
.integer
.value
[0];
2889 ucontrol
->value
.integer
.value
[0] =
2890 ucontrol
->value
.integer
.value
[0] - min
;
2894 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
2897 * snd_soc_limit_volume - Set new limit to an existing volume control.
2899 * @codec: where to look for the control
2900 * @name: Name of the control
2901 * @max: new maximum limit
2903 * Return 0 for success, else error.
2905 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2906 const char *name
, int max
)
2908 struct snd_card
*card
= codec
->card
->snd_card
;
2909 struct snd_kcontrol
*kctl
;
2910 struct soc_mixer_control
*mc
;
2914 /* Sanity check for name and max */
2915 if (unlikely(!name
|| max
<= 0))
2918 list_for_each_entry(kctl
, &card
->controls
, list
) {
2919 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2925 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2926 if (max
<= mc
->max
) {
2927 mc
->platform_max
= max
;
2933 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2935 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
2936 struct snd_ctl_elem_info
*uinfo
)
2938 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2939 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2941 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
2942 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
2946 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
2948 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
2949 struct snd_ctl_elem_value
*ucontrol
)
2951 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2952 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2955 if (codec
->using_regmap
)
2956 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
2957 ucontrol
->value
.bytes
.data
,
2958 params
->num_regs
* codec
->val_bytes
);
2962 /* Hide any masked bytes to ensure consistent data reporting */
2963 if (ret
== 0 && params
->mask
) {
2964 switch (codec
->val_bytes
) {
2966 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
2969 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
2973 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
2983 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
2985 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
2986 struct snd_ctl_elem_value
*ucontrol
)
2988 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2989 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2994 if (!codec
->using_regmap
)
2997 data
= ucontrol
->value
.bytes
.data
;
2998 len
= params
->num_regs
* codec
->val_bytes
;
3001 * If we've got a mask then we need to preserve the register
3002 * bits. We shouldn't modify the incoming data so take a
3006 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
3010 val
&= params
->mask
;
3012 data
= kmemdup(data
, len
, GFP_KERNEL
);
3016 switch (codec
->val_bytes
) {
3018 ((u8
*)data
)[0] &= ~params
->mask
;
3019 ((u8
*)data
)[0] |= val
;
3022 ((u16
*)data
)[0] &= cpu_to_be16(~params
->mask
);
3023 ((u16
*)data
)[0] |= cpu_to_be16(val
);
3026 ((u32
*)data
)[0] &= cpu_to_be32(~params
->mask
);
3027 ((u32
*)data
)[0] |= cpu_to_be32(val
);
3034 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
3042 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
3045 * snd_soc_info_xr_sx - signed multi register info callback
3046 * @kcontrol: mreg control
3047 * @uinfo: control element information
3049 * Callback to provide information of a control that can
3050 * span multiple codec registers which together
3051 * forms a single signed value in a MSB/LSB manner.
3053 * Returns 0 for success.
3055 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
3056 struct snd_ctl_elem_info
*uinfo
)
3058 struct soc_mreg_control
*mc
=
3059 (struct soc_mreg_control
*)kcontrol
->private_value
;
3060 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3062 uinfo
->value
.integer
.min
= mc
->min
;
3063 uinfo
->value
.integer
.max
= mc
->max
;
3067 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
3070 * snd_soc_get_xr_sx - signed multi register get callback
3071 * @kcontrol: mreg control
3072 * @ucontrol: control element information
3074 * Callback to get the value of a control that can span
3075 * multiple codec registers which together forms a single
3076 * signed value in a MSB/LSB manner. The control supports
3077 * specifying total no of bits used to allow for bitfields
3078 * across the multiple codec registers.
3080 * Returns 0 for success.
3082 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
3083 struct snd_ctl_elem_value
*ucontrol
)
3085 struct soc_mreg_control
*mc
=
3086 (struct soc_mreg_control
*)kcontrol
->private_value
;
3087 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3088 unsigned int regbase
= mc
->regbase
;
3089 unsigned int regcount
= mc
->regcount
;
3090 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3091 unsigned int regwmask
= (1<<regwshift
)-1;
3092 unsigned int invert
= mc
->invert
;
3093 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3097 unsigned long regval
;
3100 for (i
= 0; i
< regcount
; i
++) {
3101 regval
= snd_soc_read(codec
, regbase
+i
) & regwmask
;
3102 val
|= regval
<< (regwshift
*(regcount
-i
-1));
3105 if (min
< 0 && val
> max
)
3109 ucontrol
->value
.integer
.value
[0] = val
;
3113 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3116 * snd_soc_put_xr_sx - signed multi register get callback
3117 * @kcontrol: mreg control
3118 * @ucontrol: control element information
3120 * Callback to set the value of a control that can span
3121 * multiple codec registers which together forms a single
3122 * signed value in a MSB/LSB manner. The control supports
3123 * specifying total no of bits used to allow for bitfields
3124 * across the multiple codec registers.
3126 * Returns 0 for success.
3128 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3129 struct snd_ctl_elem_value
*ucontrol
)
3131 struct soc_mreg_control
*mc
=
3132 (struct soc_mreg_control
*)kcontrol
->private_value
;
3133 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3134 unsigned int regbase
= mc
->regbase
;
3135 unsigned int regcount
= mc
->regcount
;
3136 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3137 unsigned int regwmask
= (1<<regwshift
)-1;
3138 unsigned int invert
= mc
->invert
;
3139 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3141 long val
= ucontrol
->value
.integer
.value
[0];
3142 unsigned int i
, regval
, regmask
;
3148 for (i
= 0; i
< regcount
; i
++) {
3149 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3150 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3151 err
= snd_soc_update_bits_locked(codec
, regbase
+i
,
3159 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3162 * snd_soc_get_strobe - strobe get callback
3163 * @kcontrol: mixer control
3164 * @ucontrol: control element information
3166 * Callback get the value of a strobe mixer control.
3168 * Returns 0 for success.
3170 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3171 struct snd_ctl_elem_value
*ucontrol
)
3173 struct soc_mixer_control
*mc
=
3174 (struct soc_mixer_control
*)kcontrol
->private_value
;
3175 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3176 unsigned int reg
= mc
->reg
;
3177 unsigned int shift
= mc
->shift
;
3178 unsigned int mask
= 1 << shift
;
3179 unsigned int invert
= mc
->invert
!= 0;
3180 unsigned int val
= snd_soc_read(codec
, reg
) & mask
;
3182 if (shift
!= 0 && val
!= 0)
3184 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3188 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3191 * snd_soc_put_strobe - strobe put callback
3192 * @kcontrol: mixer control
3193 * @ucontrol: control element information
3195 * Callback strobe a register bit to high then low (or the inverse)
3196 * in one pass of a single mixer enum control.
3198 * Returns 1 for success.
3200 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3201 struct snd_ctl_elem_value
*ucontrol
)
3203 struct soc_mixer_control
*mc
=
3204 (struct soc_mixer_control
*)kcontrol
->private_value
;
3205 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3206 unsigned int reg
= mc
->reg
;
3207 unsigned int shift
= mc
->shift
;
3208 unsigned int mask
= 1 << shift
;
3209 unsigned int invert
= mc
->invert
!= 0;
3210 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3211 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3212 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3215 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val1
);
3219 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val2
);
3222 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3225 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3227 * @clk_id: DAI specific clock ID
3228 * @freq: new clock frequency in Hz
3229 * @dir: new clock direction - input/output.
3231 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3233 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3234 unsigned int freq
, int dir
)
3236 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3237 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3238 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3239 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3244 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3247 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3249 * @clk_id: DAI specific clock ID
3250 * @source: Source for the clock
3251 * @freq: new clock frequency in Hz
3252 * @dir: new clock direction - input/output.
3254 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3256 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3257 int source
, unsigned int freq
, int dir
)
3259 if (codec
->driver
->set_sysclk
)
3260 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3265 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3268 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3270 * @div_id: DAI specific clock divider ID
3271 * @div: new clock divisor.
3273 * Configures the clock dividers. This is used to derive the best DAI bit and
3274 * frame clocks from the system or master clock. It's best to set the DAI bit
3275 * and frame clocks as low as possible to save system power.
3277 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3278 int div_id
, int div
)
3280 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3281 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3285 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3288 * snd_soc_dai_set_pll - configure DAI PLL.
3290 * @pll_id: DAI specific PLL ID
3291 * @source: DAI specific source for the PLL
3292 * @freq_in: PLL input clock frequency in Hz
3293 * @freq_out: requested PLL output clock frequency in Hz
3295 * Configures and enables PLL to generate output clock based on input clock.
3297 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3298 unsigned int freq_in
, unsigned int freq_out
)
3300 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3301 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3303 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3304 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3309 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3312 * snd_soc_codec_set_pll - configure codec PLL.
3314 * @pll_id: DAI specific PLL ID
3315 * @source: DAI specific source for the PLL
3316 * @freq_in: PLL input clock frequency in Hz
3317 * @freq_out: requested PLL output clock frequency in Hz
3319 * Configures and enables PLL to generate output clock based on input clock.
3321 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3322 unsigned int freq_in
, unsigned int freq_out
)
3324 if (codec
->driver
->set_pll
)
3325 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3330 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3333 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3335 * @fmt: SND_SOC_DAIFMT_ format value.
3337 * Configures the DAI hardware format and clocking.
3339 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3341 if (dai
->driver
== NULL
)
3343 if (dai
->driver
->ops
->set_fmt
== NULL
)
3345 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3347 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3350 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3352 * @tx_mask: bitmask representing active TX slots.
3353 * @rx_mask: bitmask representing active RX slots.
3354 * @slots: Number of slots in use.
3355 * @slot_width: Width in bits for each slot.
3357 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3360 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3361 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3363 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3364 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3369 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3372 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3374 * @tx_num: how many TX channels
3375 * @tx_slot: pointer to an array which imply the TX slot number channel
3377 * @rx_num: how many RX channels
3378 * @rx_slot: pointer to an array which imply the RX slot number channel
3381 * configure the relationship between channel number and TDM slot number.
3383 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3384 unsigned int tx_num
, unsigned int *tx_slot
,
3385 unsigned int rx_num
, unsigned int *rx_slot
)
3387 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3388 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3393 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3396 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3398 * @tristate: tristate enable
3400 * Tristates the DAI so that others can use it.
3402 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3404 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3405 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3409 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3412 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3414 * @mute: mute enable
3416 * Mutes the DAI DAC.
3418 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3420 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3421 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3425 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3428 * snd_soc_register_card - Register a card with the ASoC core
3430 * @card: Card to register
3433 int snd_soc_register_card(struct snd_soc_card
*card
)
3437 if (!card
->name
|| !card
->dev
)
3440 for (i
= 0; i
< card
->num_links
; i
++) {
3441 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3444 * Codec must be specified by 1 of name or OF node,
3445 * not both or neither.
3447 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3449 "Neither/both codec name/of_node are set for %s\n",
3453 /* Codec DAI name must be specified */
3454 if (!link
->codec_dai_name
) {
3455 dev_err(card
->dev
, "codec_dai_name not set for %s\n",
3461 * Platform may be specified by either name or OF node, but
3462 * can be left unspecified, and a dummy platform will be used.
3464 if (link
->platform_name
&& link
->platform_of_node
) {
3466 "Both platform name/of_node are set for %s\n", link
->name
);
3471 * CPU device may be specified by either name or OF node, but
3472 * can be left unspecified, and will be matched based on DAI
3475 if (link
->cpu_name
&& link
->cpu_of_node
) {
3477 "Neither/both cpu name/of_node are set for %s\n",
3482 * At least one of CPU DAI name or CPU device name/node must be
3485 if (!link
->cpu_dai_name
&&
3486 !(link
->cpu_name
|| link
->cpu_of_node
)) {
3488 "Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3494 dev_set_drvdata(card
->dev
, card
);
3496 snd_soc_initialize_card_lists(card
);
3498 soc_init_card_debugfs(card
);
3500 card
->rtd
= devm_kzalloc(card
->dev
,
3501 sizeof(struct snd_soc_pcm_runtime
) *
3502 (card
->num_links
+ card
->num_aux_devs
),
3504 if (card
->rtd
== NULL
)
3507 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3509 for (i
= 0; i
< card
->num_links
; i
++)
3510 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3512 INIT_LIST_HEAD(&card
->list
);
3513 INIT_LIST_HEAD(&card
->dapm_dirty
);
3514 card
->instantiated
= 0;
3515 mutex_init(&card
->mutex
);
3516 mutex_init(&card
->dapm_mutex
);
3518 ret
= snd_soc_instantiate_card(card
);
3520 soc_cleanup_card_debugfs(card
);
3524 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3527 * snd_soc_unregister_card - Unregister a card with the ASoC core
3529 * @card: Card to unregister
3532 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3534 if (card
->instantiated
)
3535 soc_cleanup_card_resources(card
);
3536 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3540 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3543 * Simplify DAI link configuration by removing ".-1" from device names
3544 * and sanitizing names.
3546 static char *fmt_single_name(struct device
*dev
, int *id
)
3548 char *found
, name
[NAME_SIZE
];
3551 if (dev_name(dev
) == NULL
)
3554 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3556 /* are we a "%s.%d" name (platform and SPI components) */
3557 found
= strstr(name
, dev
->driver
->name
);
3560 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3562 /* discard ID from name if ID == -1 */
3564 found
[strlen(dev
->driver
->name
)] = '\0';
3568 /* I2C component devices are named "bus-addr" */
3569 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3570 char tmp
[NAME_SIZE
];
3572 /* create unique ID number from I2C addr and bus */
3573 *id
= ((id1
& 0xffff) << 16) + id2
;
3575 /* sanitize component name for DAI link creation */
3576 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3577 strlcpy(name
, tmp
, NAME_SIZE
);
3582 return kstrdup(name
, GFP_KERNEL
);
3586 * Simplify DAI link naming for single devices with multiple DAIs by removing
3587 * any ".-1" and using the DAI name (instead of device name).
3589 static inline char *fmt_multiple_name(struct device
*dev
,
3590 struct snd_soc_dai_driver
*dai_drv
)
3592 if (dai_drv
->name
== NULL
) {
3593 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3598 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3602 * snd_soc_register_dai - Register a DAI with the ASoC core
3604 * @dai: DAI to register
3606 int snd_soc_register_dai(struct device
*dev
,
3607 struct snd_soc_dai_driver
*dai_drv
)
3609 struct snd_soc_codec
*codec
;
3610 struct snd_soc_dai
*dai
;
3612 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3614 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3618 /* create DAI component name */
3619 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3620 if (dai
->name
== NULL
) {
3626 dai
->driver
= dai_drv
;
3627 dai
->dapm
.dev
= dev
;
3628 if (!dai
->driver
->ops
)
3629 dai
->driver
->ops
= &null_dai_ops
;
3631 mutex_lock(&client_mutex
);
3633 list_for_each_entry(codec
, &codec_list
, list
) {
3634 if (codec
->dev
== dev
) {
3635 dev_dbg(dev
, "Mapped DAI %s to CODEC %s\n",
3636 dai
->name
, codec
->name
);
3642 list_add(&dai
->list
, &dai_list
);
3644 mutex_unlock(&client_mutex
);
3646 pr_debug("Registered DAI '%s'\n", dai
->name
);
3650 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3653 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3655 * @dai: DAI to unregister
3657 void snd_soc_unregister_dai(struct device
*dev
)
3659 struct snd_soc_dai
*dai
;
3661 list_for_each_entry(dai
, &dai_list
, list
) {
3662 if (dev
== dai
->dev
)
3668 mutex_lock(&client_mutex
);
3669 list_del(&dai
->list
);
3670 mutex_unlock(&client_mutex
);
3672 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3676 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3679 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3681 * @dai: Array of DAIs to register
3682 * @count: Number of DAIs
3684 int snd_soc_register_dais(struct device
*dev
,
3685 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3687 struct snd_soc_codec
*codec
;
3688 struct snd_soc_dai
*dai
;
3691 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3693 for (i
= 0; i
< count
; i
++) {
3695 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3701 /* create DAI component name */
3702 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3703 if (dai
->name
== NULL
) {
3710 dai
->driver
= &dai_drv
[i
];
3711 if (dai
->driver
->id
)
3712 dai
->id
= dai
->driver
->id
;
3715 dai
->dapm
.dev
= dev
;
3716 if (!dai
->driver
->ops
)
3717 dai
->driver
->ops
= &null_dai_ops
;
3719 mutex_lock(&client_mutex
);
3721 list_for_each_entry(codec
, &codec_list
, list
) {
3722 if (codec
->dev
== dev
) {
3723 dev_dbg(dev
, "Mapped DAI %s to CODEC %s\n",
3724 dai
->name
, codec
->name
);
3730 list_add(&dai
->list
, &dai_list
);
3732 mutex_unlock(&client_mutex
);
3734 pr_debug("Registered DAI '%s'\n", dai
->name
);
3740 for (i
--; i
>= 0; i
--)
3741 snd_soc_unregister_dai(dev
);
3745 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3748 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3750 * @dai: Array of DAIs to unregister
3751 * @count: Number of DAIs
3753 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3757 for (i
= 0; i
< count
; i
++)
3758 snd_soc_unregister_dai(dev
);
3760 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3763 * snd_soc_register_platform - Register a platform with the ASoC core
3765 * @platform: platform to register
3767 int snd_soc_register_platform(struct device
*dev
,
3768 struct snd_soc_platform_driver
*platform_drv
)
3770 struct snd_soc_platform
*platform
;
3772 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3774 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3775 if (platform
== NULL
)
3778 /* create platform component name */
3779 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3780 if (platform
->name
== NULL
) {
3785 platform
->dev
= dev
;
3786 platform
->driver
= platform_drv
;
3787 platform
->dapm
.dev
= dev
;
3788 platform
->dapm
.platform
= platform
;
3789 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3790 mutex_init(&platform
->mutex
);
3792 mutex_lock(&client_mutex
);
3793 list_add(&platform
->list
, &platform_list
);
3794 mutex_unlock(&client_mutex
);
3796 pr_debug("Registered platform '%s'\n", platform
->name
);
3800 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3803 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3805 * @platform: platform to unregister
3807 void snd_soc_unregister_platform(struct device
*dev
)
3809 struct snd_soc_platform
*platform
;
3811 list_for_each_entry(platform
, &platform_list
, list
) {
3812 if (dev
== platform
->dev
)
3818 mutex_lock(&client_mutex
);
3819 list_del(&platform
->list
);
3820 mutex_unlock(&client_mutex
);
3822 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3823 kfree(platform
->name
);
3826 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3828 static u64 codec_format_map
[] = {
3829 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3830 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3831 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3832 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3833 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3834 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3835 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3836 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3837 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3838 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3839 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3840 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3841 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3842 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3843 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3844 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3847 /* Fix up the DAI formats for endianness: codecs don't actually see
3848 * the endianness of the data but we're using the CPU format
3849 * definitions which do need to include endianness so we ensure that
3850 * codec DAIs always have both big and little endian variants set.
3852 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3856 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3857 if (stream
->formats
& codec_format_map
[i
])
3858 stream
->formats
|= codec_format_map
[i
];
3862 * snd_soc_register_codec - Register a codec with the ASoC core
3864 * @codec: codec to register
3866 int snd_soc_register_codec(struct device
*dev
,
3867 const struct snd_soc_codec_driver
*codec_drv
,
3868 struct snd_soc_dai_driver
*dai_drv
,
3872 struct snd_soc_codec
*codec
;
3875 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3877 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3881 /* create CODEC component name */
3882 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3883 if (codec
->name
== NULL
) {
3888 if (codec_drv
->compress_type
)
3889 codec
->compress_type
= codec_drv
->compress_type
;
3891 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3893 codec
->write
= codec_drv
->write
;
3894 codec
->read
= codec_drv
->read
;
3895 codec
->volatile_register
= codec_drv
->volatile_register
;
3896 codec
->readable_register
= codec_drv
->readable_register
;
3897 codec
->writable_register
= codec_drv
->writable_register
;
3898 codec
->ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3899 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3900 codec
->dapm
.dev
= dev
;
3901 codec
->dapm
.codec
= codec
;
3902 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3903 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
3905 codec
->driver
= codec_drv
;
3906 codec
->num_dai
= num_dai
;
3907 mutex_init(&codec
->mutex
);
3909 /* allocate CODEC register cache */
3910 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3911 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3912 codec
->reg_size
= reg_size
;
3913 /* it is necessary to make a copy of the default register cache
3914 * because in the case of using a compression type that requires
3915 * the default register cache to be marked as __devinitconst the
3916 * kernel might have freed the array by the time we initialize
3919 if (codec_drv
->reg_cache_default
) {
3920 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3921 reg_size
, GFP_KERNEL
);
3922 if (!codec
->reg_def_copy
) {
3929 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3930 if (!codec
->volatile_register
)
3931 codec
->volatile_register
= snd_soc_default_volatile_register
;
3932 if (!codec
->readable_register
)
3933 codec
->readable_register
= snd_soc_default_readable_register
;
3934 if (!codec
->writable_register
)
3935 codec
->writable_register
= snd_soc_default_writable_register
;
3938 for (i
= 0; i
< num_dai
; i
++) {
3939 fixup_codec_formats(&dai_drv
[i
].playback
);
3940 fixup_codec_formats(&dai_drv
[i
].capture
);
3943 mutex_lock(&client_mutex
);
3944 list_add(&codec
->list
, &codec_list
);
3945 mutex_unlock(&client_mutex
);
3947 /* register any DAIs */
3949 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3951 dev_err(codec
->dev
, "Failed to regster DAIs: %d\n",
3955 pr_debug("Registered codec '%s'\n", codec
->name
);
3959 kfree(codec
->reg_def_copy
);
3960 codec
->reg_def_copy
= NULL
;
3965 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3968 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3970 * @codec: codec to unregister
3972 void snd_soc_unregister_codec(struct device
*dev
)
3974 struct snd_soc_codec
*codec
;
3977 list_for_each_entry(codec
, &codec_list
, list
) {
3978 if (dev
== codec
->dev
)
3985 for (i
= 0; i
< codec
->num_dai
; i
++)
3986 snd_soc_unregister_dai(dev
);
3988 mutex_lock(&client_mutex
);
3989 list_del(&codec
->list
);
3990 mutex_unlock(&client_mutex
);
3992 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3994 snd_soc_cache_exit(codec
);
3995 kfree(codec
->reg_def_copy
);
3999 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
4001 /* Retrieve a card's name from device tree */
4002 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
4003 const char *propname
)
4005 struct device_node
*np
= card
->dev
->of_node
;
4008 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
4010 * EINVAL means the property does not exist. This is fine providing
4011 * card->name was previously set, which is checked later in
4012 * snd_soc_register_card.
4014 if (ret
< 0 && ret
!= -EINVAL
) {
4016 "Property '%s' could not be read: %d\n",
4023 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
4025 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4026 const char *propname
)
4028 struct device_node
*np
= card
->dev
->of_node
;
4030 struct snd_soc_dapm_route
*routes
;
4033 num_routes
= of_property_count_strings(np
, propname
);
4034 if (num_routes
< 0 || num_routes
& 1) {
4036 "Property '%s' does not exist or its length is not even\n",
4043 "Property '%s's length is zero\n",
4048 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4052 "Could not allocate DAPM route table\n");
4056 for (i
= 0; i
< num_routes
; i
++) {
4057 ret
= of_property_read_string_index(np
, propname
,
4058 2 * i
, &routes
[i
].sink
);
4061 "Property '%s' index %d could not be read: %d\n",
4062 propname
, 2 * i
, ret
);
4065 ret
= of_property_read_string_index(np
, propname
,
4066 (2 * i
) + 1, &routes
[i
].source
);
4069 "Property '%s' index %d could not be read: %d\n",
4070 propname
, (2 * i
) + 1, ret
);
4075 card
->num_dapm_routes
= num_routes
;
4076 card
->dapm_routes
= routes
;
4080 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4082 static int __init
snd_soc_init(void)
4084 #ifdef CONFIG_DEBUG_FS
4085 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
4086 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
4087 pr_warn("ASoC: Failed to create debugfs directory\n");
4088 snd_soc_debugfs_root
= NULL
;
4091 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
4093 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4095 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
4097 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4099 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
4100 &platform_list_fops
))
4101 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4104 snd_soc_util_init();
4106 return platform_driver_register(&soc_driver
);
4108 module_init(snd_soc_init
);
4110 static void __exit
snd_soc_exit(void)
4112 snd_soc_util_exit();
4114 #ifdef CONFIG_DEBUG_FS
4115 debugfs_remove_recursive(snd_soc_debugfs_root
);
4117 platform_driver_unregister(&soc_driver
);
4119 module_exit(snd_soc_exit
);
4121 /* Module information */
4122 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4123 MODULE_DESCRIPTION("ALSA SoC Core");
4124 MODULE_LICENSE("GPL");
4125 MODULE_ALIAS("platform:soc-audio");