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_dai_of_node
) {
816 if (cpu_dai
->dev
->of_node
!= dai_link
->cpu_dai_of_node
)
819 if (strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
823 rtd
->cpu_dai
= cpu_dai
;
827 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
828 dai_link
->cpu_dai_name
);
829 return -EPROBE_DEFER
;
832 /* Find CODEC from registered CODECs */
833 list_for_each_entry(codec
, &codec_list
, list
) {
834 if (dai_link
->codec_of_node
) {
835 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
838 if (strcmp(codec
->name
, dai_link
->codec_name
))
845 * CODEC found, so find CODEC DAI from registered DAIs from
848 list_for_each_entry(codec_dai
, &dai_list
, list
) {
849 if (codec
->dev
== codec_dai
->dev
&&
850 !strcmp(codec_dai
->name
,
851 dai_link
->codec_dai_name
)) {
853 rtd
->codec_dai
= codec_dai
;
857 if (!rtd
->codec_dai
) {
858 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
859 dai_link
->codec_dai_name
);
860 return -EPROBE_DEFER
;
865 dev_dbg(card
->dev
, "CODEC %s not registered\n",
866 dai_link
->codec_name
);
867 return -EPROBE_DEFER
;
870 /* if there's no platform we match on the empty platform */
871 platform_name
= dai_link
->platform_name
;
872 if (!platform_name
&& !dai_link
->platform_of_node
)
873 platform_name
= "snd-soc-dummy";
875 /* find one from the set of registered platforms */
876 list_for_each_entry(platform
, &platform_list
, list
) {
877 if (dai_link
->platform_of_node
) {
878 if (platform
->dev
->of_node
!=
879 dai_link
->platform_of_node
)
882 if (strcmp(platform
->name
, platform_name
))
886 rtd
->platform
= platform
;
888 if (!rtd
->platform
) {
889 dev_dbg(card
->dev
, "platform %s not registered\n",
890 dai_link
->platform_name
);
891 return -EPROBE_DEFER
;
899 static void soc_remove_codec(struct snd_soc_codec
*codec
)
903 if (codec
->driver
->remove
) {
904 err
= codec
->driver
->remove(codec
);
907 "asoc: failed to remove %s: %d\n",
911 /* Make sure all DAPM widgets are freed */
912 snd_soc_dapm_free(&codec
->dapm
);
914 soc_cleanup_codec_debugfs(codec
);
916 list_del(&codec
->card_list
);
917 module_put(codec
->dev
->driver
->owner
);
920 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
922 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
923 struct snd_soc_codec
*codec
= rtd
->codec
;
924 struct snd_soc_platform
*platform
= rtd
->platform
;
925 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
928 /* unregister the rtd device */
929 if (rtd
->dev_registered
) {
930 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
931 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
932 device_unregister(rtd
->dev
);
933 rtd
->dev_registered
= 0;
936 /* remove the CODEC DAI */
937 if (codec_dai
&& codec_dai
->probed
&&
938 codec_dai
->driver
->remove_order
== order
) {
939 if (codec_dai
->driver
->remove
) {
940 err
= codec_dai
->driver
->remove(codec_dai
);
942 pr_err("asoc: failed to remove %s: %d\n",
943 codec_dai
->name
, err
);
945 codec_dai
->probed
= 0;
946 list_del(&codec_dai
->card_list
);
949 /* remove the platform */
950 if (platform
&& platform
->probed
&&
951 platform
->driver
->remove_order
== order
) {
952 if (platform
->driver
->remove
) {
953 err
= platform
->driver
->remove(platform
);
955 pr_err("asoc: failed to remove %s: %d\n",
956 platform
->name
, err
);
959 /* Make sure all DAPM widgets are freed */
960 snd_soc_dapm_free(&platform
->dapm
);
962 soc_cleanup_platform_debugfs(platform
);
963 platform
->probed
= 0;
964 list_del(&platform
->card_list
);
965 module_put(platform
->dev
->driver
->owner
);
968 /* remove the CODEC */
969 if (codec
&& codec
->probed
&&
970 codec
->driver
->remove_order
== order
)
971 soc_remove_codec(codec
);
973 /* remove the cpu_dai */
974 if (cpu_dai
&& cpu_dai
->probed
&&
975 cpu_dai
->driver
->remove_order
== order
) {
976 if (cpu_dai
->driver
->remove
) {
977 err
= cpu_dai
->driver
->remove(cpu_dai
);
979 pr_err("asoc: failed to remove %s: %d\n",
983 list_del(&cpu_dai
->card_list
);
984 module_put(cpu_dai
->dev
->driver
->owner
);
988 static void soc_remove_dai_links(struct snd_soc_card
*card
)
992 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
994 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
995 soc_remove_dai_link(card
, dai
, order
);
1000 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1001 struct snd_soc_codec
*codec
)
1005 if (card
->codec_conf
== NULL
)
1008 for (i
= 0; i
< card
->num_configs
; i
++) {
1009 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1010 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1011 codec
->name_prefix
= map
->name_prefix
;
1017 static int soc_probe_codec(struct snd_soc_card
*card
,
1018 struct snd_soc_codec
*codec
)
1021 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1022 struct snd_soc_dai
*dai
;
1025 codec
->dapm
.card
= card
;
1026 soc_set_name_prefix(card
, codec
);
1028 if (!try_module_get(codec
->dev
->driver
->owner
))
1031 soc_init_codec_debugfs(codec
);
1033 if (driver
->dapm_widgets
)
1034 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1035 driver
->num_dapm_widgets
);
1037 /* Create DAPM widgets for each DAI stream */
1038 list_for_each_entry(dai
, &dai_list
, list
) {
1039 if (dai
->dev
!= codec
->dev
)
1042 snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1045 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1047 if (driver
->probe
) {
1048 ret
= driver
->probe(codec
);
1051 "asoc: failed to probe CODEC %s: %d\n",
1057 if (driver
->controls
)
1058 snd_soc_add_codec_controls(codec
, driver
->controls
,
1059 driver
->num_controls
);
1060 if (driver
->dapm_routes
)
1061 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1062 driver
->num_dapm_routes
);
1064 /* mark codec as probed and add to card codec list */
1066 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1067 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1072 soc_cleanup_codec_debugfs(codec
);
1073 module_put(codec
->dev
->driver
->owner
);
1078 static int soc_probe_platform(struct snd_soc_card
*card
,
1079 struct snd_soc_platform
*platform
)
1082 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1083 struct snd_soc_dai
*dai
;
1085 platform
->card
= card
;
1086 platform
->dapm
.card
= card
;
1088 if (!try_module_get(platform
->dev
->driver
->owner
))
1091 soc_init_platform_debugfs(platform
);
1093 if (driver
->dapm_widgets
)
1094 snd_soc_dapm_new_controls(&platform
->dapm
,
1095 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1097 /* Create DAPM widgets for each DAI stream */
1098 list_for_each_entry(dai
, &dai_list
, list
) {
1099 if (dai
->dev
!= platform
->dev
)
1102 snd_soc_dapm_new_dai_widgets(&platform
->dapm
, dai
);
1105 platform
->dapm
.idle_bias_off
= 1;
1107 if (driver
->probe
) {
1108 ret
= driver
->probe(platform
);
1110 dev_err(platform
->dev
,
1111 "asoc: failed to probe platform %s: %d\n",
1112 platform
->name
, ret
);
1117 if (driver
->controls
)
1118 snd_soc_add_platform_controls(platform
, driver
->controls
,
1119 driver
->num_controls
);
1120 if (driver
->dapm_routes
)
1121 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1122 driver
->num_dapm_routes
);
1124 /* mark platform as probed and add to card platform list */
1125 platform
->probed
= 1;
1126 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1127 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1132 soc_cleanup_platform_debugfs(platform
);
1133 module_put(platform
->dev
->driver
->owner
);
1138 static void rtd_release(struct device
*dev
)
1143 static int soc_post_component_init(struct snd_soc_card
*card
,
1144 struct snd_soc_codec
*codec
,
1145 int num
, int dailess
)
1147 struct snd_soc_dai_link
*dai_link
= NULL
;
1148 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1149 struct snd_soc_pcm_runtime
*rtd
;
1150 const char *temp
, *name
;
1154 dai_link
= &card
->dai_link
[num
];
1155 rtd
= &card
->rtd
[num
];
1156 name
= dai_link
->name
;
1158 aux_dev
= &card
->aux_dev
[num
];
1159 rtd
= &card
->rtd_aux
[num
];
1160 name
= aux_dev
->name
;
1164 /* Make sure all DAPM widgets are instantiated */
1165 snd_soc_dapm_new_widgets(&codec
->dapm
);
1167 /* machine controls, routes and widgets are not prefixed */
1168 temp
= codec
->name_prefix
;
1169 codec
->name_prefix
= NULL
;
1171 /* do machine specific initialization */
1172 if (!dailess
&& dai_link
->init
)
1173 ret
= dai_link
->init(rtd
);
1174 else if (dailess
&& aux_dev
->init
)
1175 ret
= aux_dev
->init(&codec
->dapm
);
1177 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1180 codec
->name_prefix
= temp
;
1182 /* register the rtd device */
1185 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1188 device_initialize(rtd
->dev
);
1189 rtd
->dev
->parent
= card
->dev
;
1190 rtd
->dev
->release
= rtd_release
;
1191 rtd
->dev
->init_name
= name
;
1192 dev_set_drvdata(rtd
->dev
, rtd
);
1193 mutex_init(&rtd
->pcm_mutex
);
1194 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1195 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1196 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1197 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1198 ret
= device_add(rtd
->dev
);
1201 "asoc: failed to register runtime device: %d\n", ret
);
1204 rtd
->dev_registered
= 1;
1206 /* add DAPM sysfs entries for this codec */
1207 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1210 "asoc: failed to add codec dapm sysfs entries: %d\n",
1213 /* add codec sysfs entries */
1214 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1217 "asoc: failed to add codec sysfs files: %d\n", ret
);
1219 #ifdef CONFIG_DEBUG_FS
1220 /* add DPCM sysfs entries */
1221 if (!dailess
&& !dai_link
->dynamic
)
1224 ret
= soc_dpcm_debugfs_add(rtd
);
1226 dev_err(rtd
->dev
, "asoc: failed to add dpcm sysfs entries: %d\n", ret
);
1233 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1235 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1236 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1237 struct snd_soc_codec
*codec
= rtd
->codec
;
1238 struct snd_soc_platform
*platform
= rtd
->platform
;
1239 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1240 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1241 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1244 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1245 card
->name
, num
, order
);
1247 /* config components */
1248 cpu_dai
->platform
= platform
;
1249 codec_dai
->card
= card
;
1250 cpu_dai
->card
= card
;
1252 /* set default power off timeout */
1253 rtd
->pmdown_time
= pmdown_time
;
1255 /* probe the cpu_dai */
1256 if (!cpu_dai
->probed
&&
1257 cpu_dai
->driver
->probe_order
== order
) {
1258 cpu_dai
->dapm
.card
= card
;
1259 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1262 snd_soc_dapm_new_dai_widgets(&cpu_dai
->dapm
, cpu_dai
);
1264 if (cpu_dai
->driver
->probe
) {
1265 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1267 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1268 cpu_dai
->name
, ret
);
1269 module_put(cpu_dai
->dev
->driver
->owner
);
1273 cpu_dai
->probed
= 1;
1274 /* mark cpu_dai as probed and add to card dai list */
1275 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1278 /* probe the CODEC */
1279 if (!codec
->probed
&&
1280 codec
->driver
->probe_order
== order
) {
1281 ret
= soc_probe_codec(card
, codec
);
1286 /* probe the platform */
1287 if (!platform
->probed
&&
1288 platform
->driver
->probe_order
== order
) {
1289 ret
= soc_probe_platform(card
, platform
);
1294 /* probe the CODEC DAI */
1295 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1296 if (codec_dai
->driver
->probe
) {
1297 ret
= codec_dai
->driver
->probe(codec_dai
);
1299 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1300 codec_dai
->name
, ret
);
1305 /* mark codec_dai as probed and add to card dai list */
1306 codec_dai
->probed
= 1;
1307 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1310 /* complete DAI probe during last probe */
1311 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1314 ret
= soc_post_component_init(card
, codec
, num
, 0);
1318 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1320 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret
);
1322 if (!dai_link
->params
) {
1323 /* create the pcm */
1324 ret
= soc_new_pcm(rtd
, num
);
1326 pr_err("asoc: can't create pcm %s :%d\n",
1327 dai_link
->stream_name
, ret
);
1331 /* link the DAI widgets */
1332 play_w
= codec_dai
->playback_widget
;
1333 capture_w
= cpu_dai
->capture_widget
;
1334 if (play_w
&& capture_w
) {
1335 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1338 dev_err(card
->dev
, "Can't link %s to %s: %d\n",
1339 play_w
->name
, capture_w
->name
, ret
);
1344 play_w
= cpu_dai
->playback_widget
;
1345 capture_w
= codec_dai
->capture_widget
;
1346 if (play_w
&& capture_w
) {
1347 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1350 dev_err(card
->dev
, "Can't link %s to %s: %d\n",
1351 play_w
->name
, capture_w
->name
, ret
);
1357 /* add platform data for AC97 devices */
1358 if (rtd
->codec_dai
->driver
->ac97_control
)
1359 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1364 #ifdef CONFIG_SND_SOC_AC97_BUS
1365 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1369 /* Only instantiate AC97 if not already done by the adaptor
1370 * for the generic AC97 subsystem.
1372 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1374 * It is possible that the AC97 device is already registered to
1375 * the device subsystem. This happens when the device is created
1376 * via snd_ac97_mixer(). Currently only SoC codec that does so
1377 * is the generic AC97 glue but others migh emerge.
1379 * In those cases we don't try to register the device again.
1381 if (!rtd
->codec
->ac97_created
)
1384 ret
= soc_ac97_dev_register(rtd
->codec
);
1386 pr_err("asoc: AC97 device register failed:%d\n", ret
);
1390 rtd
->codec
->ac97_registered
= 1;
1395 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1397 if (codec
->ac97_registered
) {
1398 soc_ac97_dev_unregister(codec
);
1399 codec
->ac97_registered
= 0;
1404 static int soc_check_aux_dev(struct snd_soc_card
*card
, int num
)
1406 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1407 struct snd_soc_codec
*codec
;
1409 /* find CODEC from registered CODECs*/
1410 list_for_each_entry(codec
, &codec_list
, list
) {
1411 if (!strcmp(codec
->name
, aux_dev
->codec_name
))
1415 return -EPROBE_DEFER
;
1418 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1420 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1421 struct snd_soc_codec
*codec
;
1424 /* find CODEC from registered CODECs*/
1425 list_for_each_entry(codec
, &codec_list
, list
) {
1426 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1427 if (codec
->probed
) {
1429 "asoc: codec already probed");
1436 /* codec not found */
1437 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1438 return -EPROBE_DEFER
;
1441 ret
= soc_probe_codec(card
, codec
);
1445 ret
= soc_post_component_init(card
, codec
, num
, 1);
1451 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1453 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1454 struct snd_soc_codec
*codec
= rtd
->codec
;
1456 /* unregister the rtd device */
1457 if (rtd
->dev_registered
) {
1458 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1459 device_del(rtd
->dev
);
1460 rtd
->dev_registered
= 0;
1463 if (codec
&& codec
->probed
)
1464 soc_remove_codec(codec
);
1467 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1468 enum snd_soc_compress_type compress_type
)
1472 if (codec
->cache_init
)
1475 /* override the compress_type if necessary */
1476 if (compress_type
&& codec
->compress_type
!= compress_type
)
1477 codec
->compress_type
= compress_type
;
1478 ret
= snd_soc_cache_init(codec
);
1480 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1484 codec
->cache_init
= 1;
1488 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1490 struct snd_soc_codec
*codec
;
1491 struct snd_soc_codec_conf
*codec_conf
;
1492 enum snd_soc_compress_type compress_type
;
1493 struct snd_soc_dai_link
*dai_link
;
1494 int ret
, i
, order
, dai_fmt
;
1496 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1499 for (i
= 0; i
< card
->num_links
; i
++) {
1500 ret
= soc_bind_dai_link(card
, i
);
1505 /* check aux_devs too */
1506 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1507 ret
= soc_check_aux_dev(card
, i
);
1512 /* initialize the register cache for each available codec */
1513 list_for_each_entry(codec
, &codec_list
, list
) {
1514 if (codec
->cache_init
)
1516 /* by default we don't override the compress_type */
1518 /* check to see if we need to override the compress_type */
1519 for (i
= 0; i
< card
->num_configs
; ++i
) {
1520 codec_conf
= &card
->codec_conf
[i
];
1521 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1522 compress_type
= codec_conf
->compress_type
;
1523 if (compress_type
&& compress_type
1524 != codec
->compress_type
)
1528 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1533 /* card bind complete so register a sound card */
1534 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1535 card
->owner
, 0, &card
->snd_card
);
1537 pr_err("asoc: can't create sound card for card %s: %d\n",
1541 card
->snd_card
->dev
= card
->dev
;
1543 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1544 card
->dapm
.dev
= card
->dev
;
1545 card
->dapm
.card
= card
;
1546 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1548 #ifdef CONFIG_DEBUG_FS
1549 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1552 #ifdef CONFIG_PM_SLEEP
1553 /* deferred resume work */
1554 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1557 if (card
->dapm_widgets
)
1558 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1559 card
->num_dapm_widgets
);
1561 /* initialise the sound card only once */
1563 ret
= card
->probe(card
);
1565 goto card_probe_error
;
1568 /* early DAI link probe */
1569 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1571 for (i
= 0; i
< card
->num_links
; i
++) {
1572 ret
= soc_probe_dai_link(card
, i
, order
);
1574 pr_err("asoc: failed to instantiate card %s: %d\n",
1581 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1582 ret
= soc_probe_aux_dev(card
, i
);
1584 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1586 goto probe_aux_dev_err
;
1590 snd_soc_dapm_link_dai_widgets(card
);
1593 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1595 if (card
->dapm_routes
)
1596 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1597 card
->num_dapm_routes
);
1599 snd_soc_dapm_new_widgets(&card
->dapm
);
1601 for (i
= 0; i
< card
->num_links
; i
++) {
1602 dai_link
= &card
->dai_link
[i
];
1603 dai_fmt
= dai_link
->dai_fmt
;
1606 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1608 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1609 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1610 "Failed to set DAI format: %d\n",
1614 /* If this is a regular CPU link there will be a platform */
1616 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1617 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1619 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1620 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1621 "Failed to set DAI format: %d\n",
1623 } else if (dai_fmt
) {
1624 /* Flip the polarity for the "CPU" end */
1625 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1626 switch (dai_link
->dai_fmt
&
1627 SND_SOC_DAIFMT_MASTER_MASK
) {
1628 case SND_SOC_DAIFMT_CBM_CFM
:
1629 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1631 case SND_SOC_DAIFMT_CBM_CFS
:
1632 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1634 case SND_SOC_DAIFMT_CBS_CFM
:
1635 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1637 case SND_SOC_DAIFMT_CBS_CFS
:
1638 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1642 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1644 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1645 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1646 "Failed to set DAI format: %d\n",
1651 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1653 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1654 "%s", card
->long_name
? card
->long_name
: card
->name
);
1655 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1656 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1657 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1658 switch (card
->snd_card
->driver
[i
]) {
1664 if (!isalnum(card
->snd_card
->driver
[i
]))
1665 card
->snd_card
->driver
[i
] = '_';
1670 if (card
->late_probe
) {
1671 ret
= card
->late_probe(card
);
1673 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1675 goto probe_aux_dev_err
;
1679 snd_soc_dapm_new_widgets(&card
->dapm
);
1681 if (card
->fully_routed
)
1682 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1683 snd_soc_dapm_auto_nc_codec_pins(codec
);
1685 ret
= snd_card_register(card
->snd_card
);
1687 pr_err("asoc: failed to register soundcard for %s: %d\n",
1689 goto probe_aux_dev_err
;
1692 #ifdef CONFIG_SND_SOC_AC97_BUS
1693 /* register any AC97 codecs */
1694 for (i
= 0; i
< card
->num_rtd
; i
++) {
1695 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1697 pr_err("asoc: failed to register AC97 %s: %d\n",
1700 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1701 goto probe_aux_dev_err
;
1706 card
->instantiated
= 1;
1707 snd_soc_dapm_sync(&card
->dapm
);
1708 mutex_unlock(&card
->mutex
);
1713 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1714 soc_remove_aux_dev(card
, i
);
1717 soc_remove_dai_links(card
);
1723 snd_card_free(card
->snd_card
);
1726 mutex_unlock(&card
->mutex
);
1731 /* probes a new socdev */
1732 static int soc_probe(struct platform_device
*pdev
)
1734 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1738 * no card, so machine driver should be registering card
1739 * we should not be here in that case so ret error
1744 dev_warn(&pdev
->dev
,
1745 "ASoC machine %s should use snd_soc_register_card()\n",
1748 /* Bodge while we unpick instantiation */
1749 card
->dev
= &pdev
->dev
;
1751 ret
= snd_soc_register_card(card
);
1753 dev_err(&pdev
->dev
, "Failed to register card\n");
1760 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1764 /* make sure any delayed work runs */
1765 for (i
= 0; i
< card
->num_rtd
; i
++) {
1766 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1767 flush_delayed_work_sync(&rtd
->delayed_work
);
1770 /* remove auxiliary devices */
1771 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1772 soc_remove_aux_dev(card
, i
);
1774 /* remove and free each DAI */
1775 soc_remove_dai_links(card
);
1777 soc_cleanup_card_debugfs(card
);
1779 /* remove the card */
1783 snd_soc_dapm_free(&card
->dapm
);
1785 snd_card_free(card
->snd_card
);
1790 /* removes a socdev */
1791 static int soc_remove(struct platform_device
*pdev
)
1793 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1795 snd_soc_unregister_card(card
);
1799 int snd_soc_poweroff(struct device
*dev
)
1801 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1804 if (!card
->instantiated
)
1807 /* Flush out pmdown_time work - we actually do want to run it
1808 * now, we're shutting down so no imminent restart. */
1809 for (i
= 0; i
< card
->num_rtd
; i
++) {
1810 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1811 flush_delayed_work_sync(&rtd
->delayed_work
);
1814 snd_soc_dapm_shutdown(card
);
1818 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1820 const struct dev_pm_ops snd_soc_pm_ops
= {
1821 .suspend
= snd_soc_suspend
,
1822 .resume
= snd_soc_resume
,
1823 .freeze
= snd_soc_suspend
,
1824 .thaw
= snd_soc_resume
,
1825 .poweroff
= snd_soc_poweroff
,
1826 .restore
= snd_soc_resume
,
1828 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1830 /* ASoC platform driver */
1831 static struct platform_driver soc_driver
= {
1833 .name
= "soc-audio",
1834 .owner
= THIS_MODULE
,
1835 .pm
= &snd_soc_pm_ops
,
1838 .remove
= soc_remove
,
1842 * snd_soc_codec_volatile_register: Report if a register is volatile.
1844 * @codec: CODEC to query.
1845 * @reg: Register to query.
1847 * Boolean function indiciating if a CODEC register is volatile.
1849 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1852 if (codec
->volatile_register
)
1853 return codec
->volatile_register(codec
, reg
);
1857 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1860 * snd_soc_codec_readable_register: Report if a register is readable.
1862 * @codec: CODEC to query.
1863 * @reg: Register to query.
1865 * Boolean function indicating if a CODEC register is readable.
1867 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1870 if (codec
->readable_register
)
1871 return codec
->readable_register(codec
, reg
);
1875 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1878 * snd_soc_codec_writable_register: Report if a register is writable.
1880 * @codec: CODEC to query.
1881 * @reg: Register to query.
1883 * Boolean function indicating if a CODEC register is writable.
1885 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
1888 if (codec
->writable_register
)
1889 return codec
->writable_register(codec
, reg
);
1893 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
1895 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
1900 if (!platform
->driver
->read
) {
1901 dev_err(platform
->dev
, "platform has no read back\n");
1905 ret
= platform
->driver
->read(platform
, reg
);
1906 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
1907 trace_snd_soc_preg_read(platform
, reg
, ret
);
1911 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1913 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1914 unsigned int reg
, unsigned int val
)
1916 if (!platform
->driver
->write
) {
1917 dev_err(platform
->dev
, "platform has no write back\n");
1921 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1922 trace_snd_soc_preg_write(platform
, reg
, val
);
1923 return platform
->driver
->write(platform
, reg
, val
);
1925 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1928 * snd_soc_new_ac97_codec - initailise AC97 device
1929 * @codec: audio codec
1930 * @ops: AC97 bus operations
1931 * @num: AC97 codec number
1933 * Initialises AC97 codec resources for use by ad-hoc devices only.
1935 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1936 struct snd_ac97_bus_ops
*ops
, int num
)
1938 mutex_lock(&codec
->mutex
);
1940 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1941 if (codec
->ac97
== NULL
) {
1942 mutex_unlock(&codec
->mutex
);
1946 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1947 if (codec
->ac97
->bus
== NULL
) {
1950 mutex_unlock(&codec
->mutex
);
1954 codec
->ac97
->bus
->ops
= ops
;
1955 codec
->ac97
->num
= num
;
1958 * Mark the AC97 device to be created by us. This way we ensure that the
1959 * device will be registered with the device subsystem later on.
1961 codec
->ac97_created
= 1;
1963 mutex_unlock(&codec
->mutex
);
1966 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1969 * snd_soc_free_ac97_codec - free AC97 codec device
1970 * @codec: audio codec
1972 * Frees AC97 codec device resources.
1974 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1976 mutex_lock(&codec
->mutex
);
1977 #ifdef CONFIG_SND_SOC_AC97_BUS
1978 soc_unregister_ac97_dai_link(codec
);
1980 kfree(codec
->ac97
->bus
);
1983 codec
->ac97_created
= 0;
1984 mutex_unlock(&codec
->mutex
);
1986 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1988 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1992 ret
= codec
->read(codec
, reg
);
1993 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1994 trace_snd_soc_reg_read(codec
, reg
, ret
);
1998 EXPORT_SYMBOL_GPL(snd_soc_read
);
2000 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2001 unsigned int reg
, unsigned int val
)
2003 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2004 trace_snd_soc_reg_write(codec
, reg
, val
);
2005 return codec
->write(codec
, reg
, val
);
2007 EXPORT_SYMBOL_GPL(snd_soc_write
);
2009 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2010 unsigned int reg
, const void *data
, size_t len
)
2012 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2014 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2017 * snd_soc_update_bits - update codec register bits
2018 * @codec: audio codec
2019 * @reg: codec register
2020 * @mask: register mask
2023 * Writes new register value.
2025 * Returns 1 for change, 0 for no change, or negative error code.
2027 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2028 unsigned int mask
, unsigned int value
)
2031 unsigned int old
, new;
2034 if (codec
->using_regmap
) {
2035 ret
= regmap_update_bits_check(codec
->control_data
, reg
,
2036 mask
, value
, &change
);
2038 ret
= snd_soc_read(codec
, reg
);
2043 new = (old
& ~mask
) | (value
& mask
);
2044 change
= old
!= new;
2046 ret
= snd_soc_write(codec
, reg
, new);
2054 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2057 * snd_soc_update_bits_locked - update codec register bits
2058 * @codec: audio codec
2059 * @reg: codec register
2060 * @mask: register mask
2063 * Writes new register value, and takes the codec mutex.
2065 * Returns 1 for change else 0.
2067 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2068 unsigned short reg
, unsigned int mask
,
2073 mutex_lock(&codec
->mutex
);
2074 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2075 mutex_unlock(&codec
->mutex
);
2079 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2082 * snd_soc_test_bits - test register for change
2083 * @codec: audio codec
2084 * @reg: codec register
2085 * @mask: register mask
2088 * Tests a register with a new value and checks if the new value is
2089 * different from the old value.
2091 * Returns 1 for change else 0.
2093 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2094 unsigned int mask
, unsigned int value
)
2097 unsigned int old
, new;
2099 old
= snd_soc_read(codec
, reg
);
2100 new = (old
& ~mask
) | value
;
2101 change
= old
!= new;
2105 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2108 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2109 * @substream: the pcm substream
2110 * @hw: the hardware parameters
2112 * Sets the substream runtime hardware parameters.
2114 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2115 const struct snd_pcm_hardware
*hw
)
2117 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2118 runtime
->hw
.info
= hw
->info
;
2119 runtime
->hw
.formats
= hw
->formats
;
2120 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2121 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2122 runtime
->hw
.periods_min
= hw
->periods_min
;
2123 runtime
->hw
.periods_max
= hw
->periods_max
;
2124 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2125 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2128 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2131 * snd_soc_cnew - create new control
2132 * @_template: control template
2133 * @data: control private data
2134 * @long_name: control long name
2135 * @prefix: control name prefix
2137 * Create a new mixer control from a template control.
2139 * Returns 0 for success, else error.
2141 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2142 void *data
, const char *long_name
,
2145 struct snd_kcontrol_new
template;
2146 struct snd_kcontrol
*kcontrol
;
2150 memcpy(&template, _template
, sizeof(template));
2154 long_name
= template.name
;
2157 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2158 name
= kmalloc(name_len
, GFP_KERNEL
);
2162 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2164 template.name
= name
;
2166 template.name
= long_name
;
2169 kcontrol
= snd_ctl_new1(&template, data
);
2175 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2177 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2178 const struct snd_kcontrol_new
*controls
, int num_controls
,
2179 const char *prefix
, void *data
)
2183 for (i
= 0; i
< num_controls
; i
++) {
2184 const struct snd_kcontrol_new
*control
= &controls
[i
];
2185 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2186 control
->name
, prefix
));
2188 dev_err(dev
, "Failed to add %s: %d\n", control
->name
, err
);
2197 * snd_soc_add_codec_controls - add an array of controls to a codec.
2198 * Convenience function to add a list of controls. Many codecs were
2199 * duplicating this code.
2201 * @codec: codec to add controls to
2202 * @controls: array of controls to add
2203 * @num_controls: number of elements in the array
2205 * Return 0 for success, else error.
2207 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2208 const struct snd_kcontrol_new
*controls
, int num_controls
)
2210 struct snd_card
*card
= codec
->card
->snd_card
;
2212 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2213 codec
->name_prefix
, codec
);
2215 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2218 * snd_soc_add_platform_controls - add an array of controls to a platform.
2219 * Convenience function to add a list of controls.
2221 * @platform: platform to add controls to
2222 * @controls: array of controls to add
2223 * @num_controls: number of elements in the array
2225 * Return 0 for success, else error.
2227 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2228 const struct snd_kcontrol_new
*controls
, int num_controls
)
2230 struct snd_card
*card
= platform
->card
->snd_card
;
2232 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2235 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2238 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2239 * Convenience function to add a list of controls.
2241 * @soc_card: SoC card to add controls to
2242 * @controls: array of controls to add
2243 * @num_controls: number of elements in the array
2245 * Return 0 for success, else error.
2247 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2248 const struct snd_kcontrol_new
*controls
, int num_controls
)
2250 struct snd_card
*card
= soc_card
->snd_card
;
2252 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2255 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2258 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2259 * Convienience function to add a list of controls.
2261 * @dai: DAI to add controls to
2262 * @controls: array of controls to add
2263 * @num_controls: number of elements in the array
2265 * Return 0 for success, else error.
2267 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2268 const struct snd_kcontrol_new
*controls
, int num_controls
)
2270 struct snd_card
*card
= dai
->card
->snd_card
;
2272 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2275 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2278 * snd_soc_info_enum_double - enumerated double mixer info callback
2279 * @kcontrol: mixer control
2280 * @uinfo: control element information
2282 * Callback to provide information about a double enumerated
2285 * Returns 0 for success.
2287 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2288 struct snd_ctl_elem_info
*uinfo
)
2290 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2292 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2293 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2294 uinfo
->value
.enumerated
.items
= e
->max
;
2296 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2297 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2298 strcpy(uinfo
->value
.enumerated
.name
,
2299 e
->texts
[uinfo
->value
.enumerated
.item
]);
2302 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2305 * snd_soc_get_enum_double - enumerated double mixer get callback
2306 * @kcontrol: mixer control
2307 * @ucontrol: control element information
2309 * Callback to get the value of a double enumerated mixer.
2311 * Returns 0 for success.
2313 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2314 struct snd_ctl_elem_value
*ucontrol
)
2316 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2317 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2318 unsigned int val
, bitmask
;
2320 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2322 val
= snd_soc_read(codec
, e
->reg
);
2323 ucontrol
->value
.enumerated
.item
[0]
2324 = (val
>> e
->shift_l
) & (bitmask
- 1);
2325 if (e
->shift_l
!= e
->shift_r
)
2326 ucontrol
->value
.enumerated
.item
[1] =
2327 (val
>> e
->shift_r
) & (bitmask
- 1);
2331 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2334 * snd_soc_put_enum_double - enumerated double mixer put callback
2335 * @kcontrol: mixer control
2336 * @ucontrol: control element information
2338 * Callback to set the value of a double enumerated mixer.
2340 * Returns 0 for success.
2342 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2343 struct snd_ctl_elem_value
*ucontrol
)
2345 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2346 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2348 unsigned int mask
, bitmask
;
2350 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2352 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2354 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2355 mask
= (bitmask
- 1) << e
->shift_l
;
2356 if (e
->shift_l
!= e
->shift_r
) {
2357 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2359 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2360 mask
|= (bitmask
- 1) << e
->shift_r
;
2363 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2365 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2368 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2369 * @kcontrol: mixer control
2370 * @ucontrol: control element information
2372 * Callback to get the value of a double semi enumerated mixer.
2374 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2375 * used for handling bitfield coded enumeration for example.
2377 * Returns 0 for success.
2379 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2380 struct snd_ctl_elem_value
*ucontrol
)
2382 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2383 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2384 unsigned int reg_val
, val
, mux
;
2386 reg_val
= snd_soc_read(codec
, e
->reg
);
2387 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2388 for (mux
= 0; mux
< e
->max
; mux
++) {
2389 if (val
== e
->values
[mux
])
2392 ucontrol
->value
.enumerated
.item
[0] = mux
;
2393 if (e
->shift_l
!= e
->shift_r
) {
2394 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2395 for (mux
= 0; mux
< e
->max
; mux
++) {
2396 if (val
== e
->values
[mux
])
2399 ucontrol
->value
.enumerated
.item
[1] = mux
;
2404 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2407 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2408 * @kcontrol: mixer control
2409 * @ucontrol: control element information
2411 * Callback to set the value of a double semi enumerated mixer.
2413 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2414 * used for handling bitfield coded enumeration for example.
2416 * Returns 0 for success.
2418 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2419 struct snd_ctl_elem_value
*ucontrol
)
2421 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2422 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2426 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2428 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2429 mask
= e
->mask
<< e
->shift_l
;
2430 if (e
->shift_l
!= e
->shift_r
) {
2431 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2433 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2434 mask
|= e
->mask
<< e
->shift_r
;
2437 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2439 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2442 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2443 * @kcontrol: mixer control
2444 * @uinfo: control element information
2446 * Callback to provide information about an external enumerated
2449 * Returns 0 for success.
2451 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2452 struct snd_ctl_elem_info
*uinfo
)
2454 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2456 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2458 uinfo
->value
.enumerated
.items
= e
->max
;
2460 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2461 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2462 strcpy(uinfo
->value
.enumerated
.name
,
2463 e
->texts
[uinfo
->value
.enumerated
.item
]);
2466 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2469 * snd_soc_info_volsw_ext - external single mixer info callback
2470 * @kcontrol: mixer control
2471 * @uinfo: control element information
2473 * Callback to provide information about a single external mixer control.
2475 * Returns 0 for success.
2477 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2478 struct snd_ctl_elem_info
*uinfo
)
2480 int max
= kcontrol
->private_value
;
2482 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2483 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2485 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2488 uinfo
->value
.integer
.min
= 0;
2489 uinfo
->value
.integer
.max
= max
;
2492 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2495 * snd_soc_info_volsw - single mixer info callback
2496 * @kcontrol: mixer control
2497 * @uinfo: control element information
2499 * Callback to provide information about a single mixer control, or a double
2500 * mixer control that spans 2 registers.
2502 * Returns 0 for success.
2504 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2505 struct snd_ctl_elem_info
*uinfo
)
2507 struct soc_mixer_control
*mc
=
2508 (struct soc_mixer_control
*)kcontrol
->private_value
;
2511 if (!mc
->platform_max
)
2512 mc
->platform_max
= mc
->max
;
2513 platform_max
= mc
->platform_max
;
2515 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2516 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2518 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2520 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2521 uinfo
->value
.integer
.min
= 0;
2522 uinfo
->value
.integer
.max
= platform_max
;
2525 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2528 * snd_soc_get_volsw - single mixer get callback
2529 * @kcontrol: mixer control
2530 * @ucontrol: control element information
2532 * Callback to get the value of a single mixer control, or a double mixer
2533 * control that spans 2 registers.
2535 * Returns 0 for success.
2537 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2538 struct snd_ctl_elem_value
*ucontrol
)
2540 struct soc_mixer_control
*mc
=
2541 (struct soc_mixer_control
*)kcontrol
->private_value
;
2542 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2543 unsigned int reg
= mc
->reg
;
2544 unsigned int reg2
= mc
->rreg
;
2545 unsigned int shift
= mc
->shift
;
2546 unsigned int rshift
= mc
->rshift
;
2548 unsigned int mask
= (1 << fls(max
)) - 1;
2549 unsigned int invert
= mc
->invert
;
2551 ucontrol
->value
.integer
.value
[0] =
2552 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2554 ucontrol
->value
.integer
.value
[0] =
2555 max
- ucontrol
->value
.integer
.value
[0];
2557 if (snd_soc_volsw_is_stereo(mc
)) {
2559 ucontrol
->value
.integer
.value
[1] =
2560 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2562 ucontrol
->value
.integer
.value
[1] =
2563 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2565 ucontrol
->value
.integer
.value
[1] =
2566 max
- ucontrol
->value
.integer
.value
[1];
2571 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2574 * snd_soc_put_volsw - single mixer put callback
2575 * @kcontrol: mixer control
2576 * @ucontrol: control element information
2578 * Callback to set the value of a single mixer control, or a double mixer
2579 * control that spans 2 registers.
2581 * Returns 0 for success.
2583 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2584 struct snd_ctl_elem_value
*ucontrol
)
2586 struct soc_mixer_control
*mc
=
2587 (struct soc_mixer_control
*)kcontrol
->private_value
;
2588 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2589 unsigned int reg
= mc
->reg
;
2590 unsigned int reg2
= mc
->rreg
;
2591 unsigned int shift
= mc
->shift
;
2592 unsigned int rshift
= mc
->rshift
;
2594 unsigned int mask
= (1 << fls(max
)) - 1;
2595 unsigned int invert
= mc
->invert
;
2598 unsigned int val2
= 0;
2599 unsigned int val
, val_mask
;
2601 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2604 val_mask
= mask
<< shift
;
2606 if (snd_soc_volsw_is_stereo(mc
)) {
2607 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2611 val_mask
|= mask
<< rshift
;
2612 val
|= val2
<< rshift
;
2614 val2
= val2
<< shift
;
2618 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2623 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2627 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2630 * snd_soc_get_volsw_sx - single mixer get callback
2631 * @kcontrol: mixer control
2632 * @ucontrol: control element information
2634 * Callback to get the value of a single mixer control, or a double mixer
2635 * control that spans 2 registers.
2637 * Returns 0 for success.
2639 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2640 struct snd_ctl_elem_value
*ucontrol
)
2642 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2643 struct soc_mixer_control
*mc
=
2644 (struct soc_mixer_control
*)kcontrol
->private_value
;
2646 unsigned int reg
= mc
->reg
;
2647 unsigned int reg2
= mc
->rreg
;
2648 unsigned int shift
= mc
->shift
;
2649 unsigned int rshift
= mc
->rshift
;
2652 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2654 ucontrol
->value
.integer
.value
[0] =
2655 ((snd_soc_read(codec
, reg
) >> shift
) - min
) & mask
;
2657 if (snd_soc_volsw_is_stereo(mc
))
2658 ucontrol
->value
.integer
.value
[1] =
2659 ((snd_soc_read(codec
, reg2
) >> rshift
) - min
) & mask
;
2663 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2666 * snd_soc_put_volsw_sx - double mixer set callback
2667 * @kcontrol: mixer control
2668 * @uinfo: control element information
2670 * Callback to set the value of a double mixer control that spans 2 registers.
2672 * Returns 0 for success.
2674 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2675 struct snd_ctl_elem_value
*ucontrol
)
2677 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2678 struct soc_mixer_control
*mc
=
2679 (struct soc_mixer_control
*)kcontrol
->private_value
;
2681 unsigned int reg
= mc
->reg
;
2682 unsigned int reg2
= mc
->rreg
;
2683 unsigned int shift
= mc
->shift
;
2684 unsigned int rshift
= mc
->rshift
;
2687 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2689 unsigned short val
, val_mask
, val2
= 0;
2691 val_mask
= mask
<< shift
;
2692 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2695 if (snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
))
2698 if (snd_soc_volsw_is_stereo(mc
)) {
2699 val_mask
= mask
<< rshift
;
2700 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2701 val2
= val2
<< rshift
;
2703 if (snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
))
2708 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2711 * snd_soc_info_volsw_s8 - signed mixer info callback
2712 * @kcontrol: mixer control
2713 * @uinfo: control element information
2715 * Callback to provide information about a signed mixer control.
2717 * Returns 0 for success.
2719 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2720 struct snd_ctl_elem_info
*uinfo
)
2722 struct soc_mixer_control
*mc
=
2723 (struct soc_mixer_control
*)kcontrol
->private_value
;
2727 if (!mc
->platform_max
)
2728 mc
->platform_max
= mc
->max
;
2729 platform_max
= mc
->platform_max
;
2731 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2733 uinfo
->value
.integer
.min
= 0;
2734 uinfo
->value
.integer
.max
= platform_max
- min
;
2737 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2740 * snd_soc_get_volsw_s8 - signed mixer get callback
2741 * @kcontrol: mixer control
2742 * @ucontrol: control element information
2744 * Callback to get the value of a signed mixer control.
2746 * Returns 0 for success.
2748 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2749 struct snd_ctl_elem_value
*ucontrol
)
2751 struct soc_mixer_control
*mc
=
2752 (struct soc_mixer_control
*)kcontrol
->private_value
;
2753 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2754 unsigned int reg
= mc
->reg
;
2756 int val
= snd_soc_read(codec
, reg
);
2758 ucontrol
->value
.integer
.value
[0] =
2759 ((signed char)(val
& 0xff))-min
;
2760 ucontrol
->value
.integer
.value
[1] =
2761 ((signed char)((val
>> 8) & 0xff))-min
;
2764 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2767 * snd_soc_put_volsw_sgn - signed mixer put callback
2768 * @kcontrol: mixer control
2769 * @ucontrol: control element information
2771 * Callback to set the value of a signed mixer control.
2773 * Returns 0 for success.
2775 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2776 struct snd_ctl_elem_value
*ucontrol
)
2778 struct soc_mixer_control
*mc
=
2779 (struct soc_mixer_control
*)kcontrol
->private_value
;
2780 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2781 unsigned int reg
= mc
->reg
;
2785 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2786 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2788 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2790 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2793 * snd_soc_limit_volume - Set new limit to an existing volume control.
2795 * @codec: where to look for the control
2796 * @name: Name of the control
2797 * @max: new maximum limit
2799 * Return 0 for success, else error.
2801 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2802 const char *name
, int max
)
2804 struct snd_card
*card
= codec
->card
->snd_card
;
2805 struct snd_kcontrol
*kctl
;
2806 struct soc_mixer_control
*mc
;
2810 /* Sanity check for name and max */
2811 if (unlikely(!name
|| max
<= 0))
2814 list_for_each_entry(kctl
, &card
->controls
, list
) {
2815 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2821 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2822 if (max
<= mc
->max
) {
2823 mc
->platform_max
= max
;
2829 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2831 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
2832 struct snd_ctl_elem_info
*uinfo
)
2834 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2835 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2837 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
2838 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
2842 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
2844 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
2845 struct snd_ctl_elem_value
*ucontrol
)
2847 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2848 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2851 if (codec
->using_regmap
)
2852 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
2853 ucontrol
->value
.bytes
.data
,
2854 params
->num_regs
* codec
->val_bytes
);
2858 /* Hide any masked bytes to ensure consistent data reporting */
2859 if (ret
== 0 && params
->mask
) {
2860 switch (codec
->val_bytes
) {
2862 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
2865 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
2869 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
2879 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
2881 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
2882 struct snd_ctl_elem_value
*ucontrol
)
2884 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2885 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2890 if (!codec
->using_regmap
)
2893 data
= ucontrol
->value
.bytes
.data
;
2894 len
= params
->num_regs
* codec
->val_bytes
;
2897 * If we've got a mask then we need to preserve the register
2898 * bits. We shouldn't modify the incoming data so take a
2902 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
2906 val
&= params
->mask
;
2908 data
= kmemdup(data
, len
, GFP_KERNEL
);
2912 switch (codec
->val_bytes
) {
2914 ((u8
*)data
)[0] &= ~params
->mask
;
2915 ((u8
*)data
)[0] |= val
;
2918 ((u16
*)data
)[0] &= cpu_to_be16(~params
->mask
);
2919 ((u16
*)data
)[0] |= cpu_to_be16(val
);
2922 ((u32
*)data
)[0] &= cpu_to_be32(~params
->mask
);
2923 ((u32
*)data
)[0] |= cpu_to_be32(val
);
2930 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
2938 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
2941 * snd_soc_info_xr_sx - signed multi register info callback
2942 * @kcontrol: mreg control
2943 * @uinfo: control element information
2945 * Callback to provide information of a control that can
2946 * span multiple codec registers which together
2947 * forms a single signed value in a MSB/LSB manner.
2949 * Returns 0 for success.
2951 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
2952 struct snd_ctl_elem_info
*uinfo
)
2954 struct soc_mreg_control
*mc
=
2955 (struct soc_mreg_control
*)kcontrol
->private_value
;
2956 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2958 uinfo
->value
.integer
.min
= mc
->min
;
2959 uinfo
->value
.integer
.max
= mc
->max
;
2963 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
2966 * snd_soc_get_xr_sx - signed multi register get callback
2967 * @kcontrol: mreg control
2968 * @ucontrol: control element information
2970 * Callback to get the value of a control that can span
2971 * multiple codec registers which together forms a single
2972 * signed value in a MSB/LSB manner. The control supports
2973 * specifying total no of bits used to allow for bitfields
2974 * across the multiple codec registers.
2976 * Returns 0 for success.
2978 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
2979 struct snd_ctl_elem_value
*ucontrol
)
2981 struct soc_mreg_control
*mc
=
2982 (struct soc_mreg_control
*)kcontrol
->private_value
;
2983 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2984 unsigned int regbase
= mc
->regbase
;
2985 unsigned int regcount
= mc
->regcount
;
2986 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
2987 unsigned int regwmask
= (1<<regwshift
)-1;
2988 unsigned int invert
= mc
->invert
;
2989 unsigned long mask
= (1UL<<mc
->nbits
)-1;
2993 unsigned long regval
;
2996 for (i
= 0; i
< regcount
; i
++) {
2997 regval
= snd_soc_read(codec
, regbase
+i
) & regwmask
;
2998 val
|= regval
<< (regwshift
*(regcount
-i
-1));
3001 if (min
< 0 && val
> max
)
3005 ucontrol
->value
.integer
.value
[0] = val
;
3009 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3012 * snd_soc_put_xr_sx - signed multi register get callback
3013 * @kcontrol: mreg control
3014 * @ucontrol: control element information
3016 * Callback to set the value of a control that can span
3017 * multiple codec registers which together forms a single
3018 * signed value in a MSB/LSB manner. The control supports
3019 * specifying total no of bits used to allow for bitfields
3020 * across the multiple codec registers.
3022 * Returns 0 for success.
3024 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3025 struct snd_ctl_elem_value
*ucontrol
)
3027 struct soc_mreg_control
*mc
=
3028 (struct soc_mreg_control
*)kcontrol
->private_value
;
3029 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3030 unsigned int regbase
= mc
->regbase
;
3031 unsigned int regcount
= mc
->regcount
;
3032 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3033 unsigned int regwmask
= (1<<regwshift
)-1;
3034 unsigned int invert
= mc
->invert
;
3035 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3037 long val
= ucontrol
->value
.integer
.value
[0];
3038 unsigned int i
, regval
, regmask
;
3044 for (i
= 0; i
< regcount
; i
++) {
3045 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3046 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3047 err
= snd_soc_update_bits_locked(codec
, regbase
+i
,
3055 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3058 * snd_soc_get_strobe - strobe get callback
3059 * @kcontrol: mixer control
3060 * @ucontrol: control element information
3062 * Callback get the value of a strobe mixer control.
3064 * Returns 0 for success.
3066 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3067 struct snd_ctl_elem_value
*ucontrol
)
3069 struct soc_mixer_control
*mc
=
3070 (struct soc_mixer_control
*)kcontrol
->private_value
;
3071 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3072 unsigned int reg
= mc
->reg
;
3073 unsigned int shift
= mc
->shift
;
3074 unsigned int mask
= 1 << shift
;
3075 unsigned int invert
= mc
->invert
!= 0;
3076 unsigned int val
= snd_soc_read(codec
, reg
) & mask
;
3078 if (shift
!= 0 && val
!= 0)
3080 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3084 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3087 * snd_soc_put_strobe - strobe put callback
3088 * @kcontrol: mixer control
3089 * @ucontrol: control element information
3091 * Callback strobe a register bit to high then low (or the inverse)
3092 * in one pass of a single mixer enum control.
3094 * Returns 1 for success.
3096 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3097 struct snd_ctl_elem_value
*ucontrol
)
3099 struct soc_mixer_control
*mc
=
3100 (struct soc_mixer_control
*)kcontrol
->private_value
;
3101 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3102 unsigned int reg
= mc
->reg
;
3103 unsigned int shift
= mc
->shift
;
3104 unsigned int mask
= 1 << shift
;
3105 unsigned int invert
= mc
->invert
!= 0;
3106 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3107 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3108 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3111 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val1
);
3115 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val2
);
3118 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3121 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3123 * @clk_id: DAI specific clock ID
3124 * @freq: new clock frequency in Hz
3125 * @dir: new clock direction - input/output.
3127 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3129 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3130 unsigned int freq
, int dir
)
3132 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3133 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3134 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3135 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3140 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3143 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3145 * @clk_id: DAI specific clock ID
3146 * @source: Source for the clock
3147 * @freq: new clock frequency in Hz
3148 * @dir: new clock direction - input/output.
3150 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3152 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3153 int source
, unsigned int freq
, int dir
)
3155 if (codec
->driver
->set_sysclk
)
3156 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3161 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3164 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3166 * @div_id: DAI specific clock divider ID
3167 * @div: new clock divisor.
3169 * Configures the clock dividers. This is used to derive the best DAI bit and
3170 * frame clocks from the system or master clock. It's best to set the DAI bit
3171 * and frame clocks as low as possible to save system power.
3173 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3174 int div_id
, int div
)
3176 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3177 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3181 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3184 * snd_soc_dai_set_pll - configure DAI PLL.
3186 * @pll_id: DAI specific PLL ID
3187 * @source: DAI specific source for the PLL
3188 * @freq_in: PLL input clock frequency in Hz
3189 * @freq_out: requested PLL output clock frequency in Hz
3191 * Configures and enables PLL to generate output clock based on input clock.
3193 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3194 unsigned int freq_in
, unsigned int freq_out
)
3196 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3197 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3199 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3200 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3205 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3208 * snd_soc_codec_set_pll - configure codec PLL.
3210 * @pll_id: DAI specific PLL ID
3211 * @source: DAI specific source for the PLL
3212 * @freq_in: PLL input clock frequency in Hz
3213 * @freq_out: requested PLL output clock frequency in Hz
3215 * Configures and enables PLL to generate output clock based on input clock.
3217 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3218 unsigned int freq_in
, unsigned int freq_out
)
3220 if (codec
->driver
->set_pll
)
3221 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3226 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3229 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3231 * @fmt: SND_SOC_DAIFMT_ format value.
3233 * Configures the DAI hardware format and clocking.
3235 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3237 if (dai
->driver
== NULL
)
3239 if (dai
->driver
->ops
->set_fmt
== NULL
)
3241 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3243 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3246 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3248 * @tx_mask: bitmask representing active TX slots.
3249 * @rx_mask: bitmask representing active RX slots.
3250 * @slots: Number of slots in use.
3251 * @slot_width: Width in bits for each slot.
3253 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3256 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3257 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3259 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3260 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3265 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3268 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3270 * @tx_num: how many TX channels
3271 * @tx_slot: pointer to an array which imply the TX slot number channel
3273 * @rx_num: how many RX channels
3274 * @rx_slot: pointer to an array which imply the RX slot number channel
3277 * configure the relationship between channel number and TDM slot number.
3279 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3280 unsigned int tx_num
, unsigned int *tx_slot
,
3281 unsigned int rx_num
, unsigned int *rx_slot
)
3283 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3284 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3289 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3292 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3294 * @tristate: tristate enable
3296 * Tristates the DAI so that others can use it.
3298 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3300 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3301 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3305 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3308 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3310 * @mute: mute enable
3312 * Mutes the DAI DAC.
3314 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3316 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3317 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3321 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3324 * snd_soc_register_card - Register a card with the ASoC core
3326 * @card: Card to register
3329 int snd_soc_register_card(struct snd_soc_card
*card
)
3333 if (!card
->name
|| !card
->dev
)
3336 for (i
= 0; i
< card
->num_links
; i
++) {
3337 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3340 * Codec must be specified by 1 of name or OF node,
3341 * not both or neither.
3343 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3345 "Neither/both codec name/of_node are set for %s\n",
3351 * Platform may be specified by either name or OF node, but
3352 * can be left unspecified, and a dummy platform will be used.
3354 if (link
->platform_name
&& link
->platform_of_node
) {
3356 "Both platform name/of_node are set for %s\n", link
->name
);
3361 * CPU DAI must be specified by 1 of name or OF node,
3362 * not both or neither.
3364 if (!!link
->cpu_dai_name
== !!link
->cpu_dai_of_node
) {
3366 "Neither/both cpu_dai name/of_node are set for %s\n",
3372 dev_set_drvdata(card
->dev
, card
);
3374 snd_soc_initialize_card_lists(card
);
3376 soc_init_card_debugfs(card
);
3378 card
->rtd
= devm_kzalloc(card
->dev
,
3379 sizeof(struct snd_soc_pcm_runtime
) *
3380 (card
->num_links
+ card
->num_aux_devs
),
3382 if (card
->rtd
== NULL
)
3385 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3387 for (i
= 0; i
< card
->num_links
; i
++)
3388 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3390 INIT_LIST_HEAD(&card
->list
);
3391 INIT_LIST_HEAD(&card
->dapm_dirty
);
3392 card
->instantiated
= 0;
3393 mutex_init(&card
->mutex
);
3394 mutex_init(&card
->dapm_mutex
);
3396 ret
= snd_soc_instantiate_card(card
);
3398 soc_cleanup_card_debugfs(card
);
3402 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3405 * snd_soc_unregister_card - Unregister a card with the ASoC core
3407 * @card: Card to unregister
3410 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3412 if (card
->instantiated
)
3413 soc_cleanup_card_resources(card
);
3414 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3418 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3421 * Simplify DAI link configuration by removing ".-1" from device names
3422 * and sanitizing names.
3424 static char *fmt_single_name(struct device
*dev
, int *id
)
3426 char *found
, name
[NAME_SIZE
];
3429 if (dev_name(dev
) == NULL
)
3432 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3434 /* are we a "%s.%d" name (platform and SPI components) */
3435 found
= strstr(name
, dev
->driver
->name
);
3438 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3440 /* discard ID from name if ID == -1 */
3442 found
[strlen(dev
->driver
->name
)] = '\0';
3446 /* I2C component devices are named "bus-addr" */
3447 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3448 char tmp
[NAME_SIZE
];
3450 /* create unique ID number from I2C addr and bus */
3451 *id
= ((id1
& 0xffff) << 16) + id2
;
3453 /* sanitize component name for DAI link creation */
3454 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3455 strlcpy(name
, tmp
, NAME_SIZE
);
3460 return kstrdup(name
, GFP_KERNEL
);
3464 * Simplify DAI link naming for single devices with multiple DAIs by removing
3465 * any ".-1" and using the DAI name (instead of device name).
3467 static inline char *fmt_multiple_name(struct device
*dev
,
3468 struct snd_soc_dai_driver
*dai_drv
)
3470 if (dai_drv
->name
== NULL
) {
3471 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3476 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3480 * snd_soc_register_dai - Register a DAI with the ASoC core
3482 * @dai: DAI to register
3484 int snd_soc_register_dai(struct device
*dev
,
3485 struct snd_soc_dai_driver
*dai_drv
)
3487 struct snd_soc_codec
*codec
;
3488 struct snd_soc_dai
*dai
;
3490 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3492 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3496 /* create DAI component name */
3497 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3498 if (dai
->name
== NULL
) {
3504 dai
->driver
= dai_drv
;
3505 dai
->dapm
.dev
= dev
;
3506 if (!dai
->driver
->ops
)
3507 dai
->driver
->ops
= &null_dai_ops
;
3509 mutex_lock(&client_mutex
);
3511 list_for_each_entry(codec
, &codec_list
, list
) {
3512 if (codec
->dev
== dev
) {
3513 dev_dbg(dev
, "Mapped DAI %s to CODEC %s\n",
3514 dai
->name
, codec
->name
);
3520 list_add(&dai
->list
, &dai_list
);
3522 mutex_unlock(&client_mutex
);
3524 pr_debug("Registered DAI '%s'\n", dai
->name
);
3528 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3531 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3533 * @dai: DAI to unregister
3535 void snd_soc_unregister_dai(struct device
*dev
)
3537 struct snd_soc_dai
*dai
;
3539 list_for_each_entry(dai
, &dai_list
, list
) {
3540 if (dev
== dai
->dev
)
3546 mutex_lock(&client_mutex
);
3547 list_del(&dai
->list
);
3548 mutex_unlock(&client_mutex
);
3550 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3554 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3557 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3559 * @dai: Array of DAIs to register
3560 * @count: Number of DAIs
3562 int snd_soc_register_dais(struct device
*dev
,
3563 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3565 struct snd_soc_codec
*codec
;
3566 struct snd_soc_dai
*dai
;
3569 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3571 for (i
= 0; i
< count
; i
++) {
3573 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3579 /* create DAI component name */
3580 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3581 if (dai
->name
== NULL
) {
3588 dai
->driver
= &dai_drv
[i
];
3589 if (dai
->driver
->id
)
3590 dai
->id
= dai
->driver
->id
;
3593 dai
->dapm
.dev
= dev
;
3594 if (!dai
->driver
->ops
)
3595 dai
->driver
->ops
= &null_dai_ops
;
3597 mutex_lock(&client_mutex
);
3599 list_for_each_entry(codec
, &codec_list
, list
) {
3600 if (codec
->dev
== dev
) {
3601 dev_dbg(dev
, "Mapped DAI %s to CODEC %s\n",
3602 dai
->name
, codec
->name
);
3608 list_add(&dai
->list
, &dai_list
);
3610 mutex_unlock(&client_mutex
);
3612 pr_debug("Registered DAI '%s'\n", dai
->name
);
3618 for (i
--; i
>= 0; i
--)
3619 snd_soc_unregister_dai(dev
);
3623 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3626 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3628 * @dai: Array of DAIs to unregister
3629 * @count: Number of DAIs
3631 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3635 for (i
= 0; i
< count
; i
++)
3636 snd_soc_unregister_dai(dev
);
3638 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3641 * snd_soc_register_platform - Register a platform with the ASoC core
3643 * @platform: platform to register
3645 int snd_soc_register_platform(struct device
*dev
,
3646 struct snd_soc_platform_driver
*platform_drv
)
3648 struct snd_soc_platform
*platform
;
3650 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3652 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3653 if (platform
== NULL
)
3656 /* create platform component name */
3657 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3658 if (platform
->name
== NULL
) {
3663 platform
->dev
= dev
;
3664 platform
->driver
= platform_drv
;
3665 platform
->dapm
.dev
= dev
;
3666 platform
->dapm
.platform
= platform
;
3667 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3668 mutex_init(&platform
->mutex
);
3670 mutex_lock(&client_mutex
);
3671 list_add(&platform
->list
, &platform_list
);
3672 mutex_unlock(&client_mutex
);
3674 pr_debug("Registered platform '%s'\n", platform
->name
);
3678 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3681 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3683 * @platform: platform to unregister
3685 void snd_soc_unregister_platform(struct device
*dev
)
3687 struct snd_soc_platform
*platform
;
3689 list_for_each_entry(platform
, &platform_list
, list
) {
3690 if (dev
== platform
->dev
)
3696 mutex_lock(&client_mutex
);
3697 list_del(&platform
->list
);
3698 mutex_unlock(&client_mutex
);
3700 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3701 kfree(platform
->name
);
3704 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3706 static u64 codec_format_map
[] = {
3707 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3708 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3709 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3710 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3711 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3712 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3713 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3714 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3715 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3716 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3717 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3718 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3719 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3720 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3721 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3722 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3725 /* Fix up the DAI formats for endianness: codecs don't actually see
3726 * the endianness of the data but we're using the CPU format
3727 * definitions which do need to include endianness so we ensure that
3728 * codec DAIs always have both big and little endian variants set.
3730 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3734 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3735 if (stream
->formats
& codec_format_map
[i
])
3736 stream
->formats
|= codec_format_map
[i
];
3740 * snd_soc_register_codec - Register a codec with the ASoC core
3742 * @codec: codec to register
3744 int snd_soc_register_codec(struct device
*dev
,
3745 const struct snd_soc_codec_driver
*codec_drv
,
3746 struct snd_soc_dai_driver
*dai_drv
,
3750 struct snd_soc_codec
*codec
;
3753 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3755 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3759 /* create CODEC component name */
3760 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3761 if (codec
->name
== NULL
) {
3766 if (codec_drv
->compress_type
)
3767 codec
->compress_type
= codec_drv
->compress_type
;
3769 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3771 codec
->write
= codec_drv
->write
;
3772 codec
->read
= codec_drv
->read
;
3773 codec
->volatile_register
= codec_drv
->volatile_register
;
3774 codec
->readable_register
= codec_drv
->readable_register
;
3775 codec
->writable_register
= codec_drv
->writable_register
;
3776 codec
->ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3777 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3778 codec
->dapm
.dev
= dev
;
3779 codec
->dapm
.codec
= codec
;
3780 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3781 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
3783 codec
->driver
= codec_drv
;
3784 codec
->num_dai
= num_dai
;
3785 mutex_init(&codec
->mutex
);
3787 /* allocate CODEC register cache */
3788 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3789 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3790 codec
->reg_size
= reg_size
;
3791 /* it is necessary to make a copy of the default register cache
3792 * because in the case of using a compression type that requires
3793 * the default register cache to be marked as __devinitconst the
3794 * kernel might have freed the array by the time we initialize
3797 if (codec_drv
->reg_cache_default
) {
3798 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3799 reg_size
, GFP_KERNEL
);
3800 if (!codec
->reg_def_copy
) {
3807 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3808 if (!codec
->volatile_register
)
3809 codec
->volatile_register
= snd_soc_default_volatile_register
;
3810 if (!codec
->readable_register
)
3811 codec
->readable_register
= snd_soc_default_readable_register
;
3812 if (!codec
->writable_register
)
3813 codec
->writable_register
= snd_soc_default_writable_register
;
3816 for (i
= 0; i
< num_dai
; i
++) {
3817 fixup_codec_formats(&dai_drv
[i
].playback
);
3818 fixup_codec_formats(&dai_drv
[i
].capture
);
3821 mutex_lock(&client_mutex
);
3822 list_add(&codec
->list
, &codec_list
);
3823 mutex_unlock(&client_mutex
);
3825 /* register any DAIs */
3827 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3829 dev_err(codec
->dev
, "Failed to regster DAIs: %d\n",
3833 pr_debug("Registered codec '%s'\n", codec
->name
);
3837 kfree(codec
->reg_def_copy
);
3838 codec
->reg_def_copy
= NULL
;
3843 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3846 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3848 * @codec: codec to unregister
3850 void snd_soc_unregister_codec(struct device
*dev
)
3852 struct snd_soc_codec
*codec
;
3855 list_for_each_entry(codec
, &codec_list
, list
) {
3856 if (dev
== codec
->dev
)
3863 for (i
= 0; i
< codec
->num_dai
; i
++)
3864 snd_soc_unregister_dai(dev
);
3866 mutex_lock(&client_mutex
);
3867 list_del(&codec
->list
);
3868 mutex_unlock(&client_mutex
);
3870 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3872 snd_soc_cache_exit(codec
);
3873 kfree(codec
->reg_def_copy
);
3877 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3879 /* Retrieve a card's name from device tree */
3880 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3881 const char *propname
)
3883 struct device_node
*np
= card
->dev
->of_node
;
3886 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3888 * EINVAL means the property does not exist. This is fine providing
3889 * card->name was previously set, which is checked later in
3890 * snd_soc_register_card.
3892 if (ret
< 0 && ret
!= -EINVAL
) {
3894 "Property '%s' could not be read: %d\n",
3901 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3903 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3904 const char *propname
)
3906 struct device_node
*np
= card
->dev
->of_node
;
3908 struct snd_soc_dapm_route
*routes
;
3911 num_routes
= of_property_count_strings(np
, propname
);
3912 if (num_routes
< 0 || num_routes
& 1) {
3914 "Property '%s' does not exist or its length is not even\n",
3921 "Property '%s's length is zero\n",
3926 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3930 "Could not allocate DAPM route table\n");
3934 for (i
= 0; i
< num_routes
; i
++) {
3935 ret
= of_property_read_string_index(np
, propname
,
3936 2 * i
, &routes
[i
].sink
);
3939 "Property '%s' index %d could not be read: %d\n",
3940 propname
, 2 * i
, ret
);
3943 ret
= of_property_read_string_index(np
, propname
,
3944 (2 * i
) + 1, &routes
[i
].source
);
3947 "Property '%s' index %d could not be read: %d\n",
3948 propname
, (2 * i
) + 1, ret
);
3953 card
->num_dapm_routes
= num_routes
;
3954 card
->dapm_routes
= routes
;
3958 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3960 static int __init
snd_soc_init(void)
3962 #ifdef CONFIG_DEBUG_FS
3963 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3964 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3965 pr_warn("ASoC: Failed to create debugfs directory\n");
3966 snd_soc_debugfs_root
= NULL
;
3969 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3971 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3973 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3975 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3977 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3978 &platform_list_fops
))
3979 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3982 snd_soc_util_init();
3984 return platform_driver_register(&soc_driver
);
3986 module_init(snd_soc_init
);
3988 static void __exit
snd_soc_exit(void)
3990 snd_soc_util_exit();
3992 #ifdef CONFIG_DEBUG_FS
3993 debugfs_remove_recursive(snd_soc_debugfs_root
);
3995 platform_driver_unregister(&soc_driver
);
3997 module_exit(snd_soc_exit
);
3999 /* Module information */
4000 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4001 MODULE_DESCRIPTION("ALSA SoC Core");
4002 MODULE_LICENSE("GPL");
4003 MODULE_ALIAS("platform:soc-audio");