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/initval.h>
44 #define CREATE_TRACE_POINTS
45 #include <trace/events/asoc.h>
49 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
51 #ifdef CONFIG_DEBUG_FS
52 struct dentry
*snd_soc_debugfs_root
;
53 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
56 static DEFINE_MUTEX(client_mutex
);
57 static LIST_HEAD(card_list
);
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 #ifdef CONFIG_SND_SOC_AC97_BUS
469 /* unregister ac97 codec */
470 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
472 if (codec
->ac97
->dev
.bus
)
473 device_unregister(&codec
->ac97
->dev
);
477 /* stop no dev release warning */
478 static void soc_ac97_device_release(struct device
*dev
){}
480 /* register ac97 codec to bus */
481 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
485 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
486 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
487 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
489 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
490 codec
->card
->snd_card
->number
, 0, codec
->name
);
491 err
= device_register(&codec
->ac97
->dev
);
493 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
494 codec
->ac97
->dev
.bus
= NULL
;
501 #ifdef CONFIG_PM_SLEEP
502 /* powers down audio subsystem for suspend */
503 int snd_soc_suspend(struct device
*dev
)
505 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
506 struct snd_soc_codec
*codec
;
509 /* If the initialization of this soc device failed, there is no codec
510 * associated with it. Just bail out in this case.
512 if (list_empty(&card
->codec_dev_list
))
515 /* Due to the resume being scheduled into a workqueue we could
516 * suspend before that's finished - wait for it to complete.
518 snd_power_lock(card
->snd_card
);
519 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
520 snd_power_unlock(card
->snd_card
);
522 /* we're going to block userspace touching us until resume completes */
523 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
525 /* mute any active DACs */
526 for (i
= 0; i
< card
->num_rtd
; i
++) {
527 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
528 struct snd_soc_dai_driver
*drv
= dai
->driver
;
530 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
533 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
534 drv
->ops
->digital_mute(dai
, 1);
537 /* suspend all pcms */
538 for (i
= 0; i
< card
->num_rtd
; i
++) {
539 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
542 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
545 if (card
->suspend_pre
)
546 card
->suspend_pre(card
);
548 for (i
= 0; i
< card
->num_rtd
; i
++) {
549 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
550 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
552 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
555 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
556 cpu_dai
->driver
->suspend(cpu_dai
);
557 if (platform
->driver
->suspend
&& !platform
->suspended
) {
558 platform
->driver
->suspend(cpu_dai
);
559 platform
->suspended
= 1;
563 /* close any waiting streams and save state */
564 for (i
= 0; i
< card
->num_rtd
; i
++) {
565 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
566 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
569 for (i
= 0; i
< card
->num_rtd
; i
++) {
570 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
572 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
575 snd_soc_dapm_stream_event(&card
->rtd
[i
],
576 SNDRV_PCM_STREAM_PLAYBACK
,
578 SND_SOC_DAPM_STREAM_SUSPEND
);
580 snd_soc_dapm_stream_event(&card
->rtd
[i
],
581 SNDRV_PCM_STREAM_CAPTURE
,
583 SND_SOC_DAPM_STREAM_SUSPEND
);
586 /* suspend all CODECs */
587 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
588 /* If there are paths active then the CODEC will be held with
589 * bias _ON and should not be suspended. */
590 if (!codec
->suspended
&& codec
->driver
->suspend
) {
591 switch (codec
->dapm
.bias_level
) {
592 case SND_SOC_BIAS_STANDBY
:
594 * If the CODEC is capable of idle
595 * bias off then being in STANDBY
596 * means it's doing something,
597 * otherwise fall through.
599 if (codec
->dapm
.idle_bias_off
) {
601 "idle_bias_off CODEC on over suspend\n");
604 case SND_SOC_BIAS_OFF
:
605 codec
->driver
->suspend(codec
);
606 codec
->suspended
= 1;
607 codec
->cache_sync
= 1;
610 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
616 for (i
= 0; i
< card
->num_rtd
; i
++) {
617 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
619 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
622 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
623 cpu_dai
->driver
->suspend(cpu_dai
);
626 if (card
->suspend_post
)
627 card
->suspend_post(card
);
631 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
633 /* deferred resume work, so resume can complete before we finished
634 * setting our codec back up, which can be very slow on I2C
636 static void soc_resume_deferred(struct work_struct
*work
)
638 struct snd_soc_card
*card
=
639 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
640 struct snd_soc_codec
*codec
;
643 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
644 * so userspace apps are blocked from touching us
647 dev_dbg(card
->dev
, "starting resume work\n");
649 /* Bring us up into D2 so that DAPM starts enabling things */
650 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
652 if (card
->resume_pre
)
653 card
->resume_pre(card
);
655 /* resume AC97 DAIs */
656 for (i
= 0; i
< card
->num_rtd
; i
++) {
657 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
659 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
662 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
663 cpu_dai
->driver
->resume(cpu_dai
);
666 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
667 /* If the CODEC was idle over suspend then it will have been
668 * left with bias OFF or STANDBY and suspended so we must now
669 * resume. Otherwise the suspend was suppressed.
671 if (codec
->driver
->resume
&& codec
->suspended
) {
672 switch (codec
->dapm
.bias_level
) {
673 case SND_SOC_BIAS_STANDBY
:
674 case SND_SOC_BIAS_OFF
:
675 codec
->driver
->resume(codec
);
676 codec
->suspended
= 0;
679 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
685 for (i
= 0; i
< card
->num_rtd
; i
++) {
686 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
688 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
691 snd_soc_dapm_stream_event(&card
->rtd
[i
],
692 SNDRV_PCM_STREAM_PLAYBACK
, codec_dai
,
693 SND_SOC_DAPM_STREAM_RESUME
);
695 snd_soc_dapm_stream_event(&card
->rtd
[i
],
696 SNDRV_PCM_STREAM_CAPTURE
, codec_dai
,
697 SND_SOC_DAPM_STREAM_RESUME
);
700 /* unmute any active DACs */
701 for (i
= 0; i
< card
->num_rtd
; i
++) {
702 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
703 struct snd_soc_dai_driver
*drv
= dai
->driver
;
705 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
708 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
709 drv
->ops
->digital_mute(dai
, 0);
712 for (i
= 0; i
< card
->num_rtd
; i
++) {
713 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
714 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
716 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
719 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
720 cpu_dai
->driver
->resume(cpu_dai
);
721 if (platform
->driver
->resume
&& platform
->suspended
) {
722 platform
->driver
->resume(cpu_dai
);
723 platform
->suspended
= 0;
727 if (card
->resume_post
)
728 card
->resume_post(card
);
730 dev_dbg(card
->dev
, "resume work completed\n");
732 /* userspace can access us now we are back as we were before */
733 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
736 /* powers up audio subsystem after a suspend */
737 int snd_soc_resume(struct device
*dev
)
739 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
740 int i
, ac97_control
= 0;
742 /* If the initialization of this soc device failed, there is no codec
743 * associated with it. Just bail out in this case.
745 if (list_empty(&card
->codec_dev_list
))
748 /* AC97 devices might have other drivers hanging off them so
749 * need to resume immediately. Other drivers don't have that
750 * problem and may take a substantial amount of time to resume
751 * due to I/O costs and anti-pop so handle them out of line.
753 for (i
= 0; i
< card
->num_rtd
; i
++) {
754 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
755 ac97_control
|= cpu_dai
->driver
->ac97_control
;
758 dev_dbg(dev
, "Resuming AC97 immediately\n");
759 soc_resume_deferred(&card
->deferred_resume_work
);
761 dev_dbg(dev
, "Scheduling resume work\n");
762 if (!schedule_work(&card
->deferred_resume_work
))
763 dev_err(dev
, "resume work item may be lost\n");
768 EXPORT_SYMBOL_GPL(snd_soc_resume
);
770 #define snd_soc_suspend NULL
771 #define snd_soc_resume NULL
774 static const struct snd_soc_dai_ops null_dai_ops
= {
777 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
779 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
780 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
781 struct snd_soc_codec
*codec
;
782 struct snd_soc_platform
*platform
;
783 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
784 const char *platform_name
;
788 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
790 /* do we already have the CPU DAI for this link ? */
794 /* no, then find CPU DAI from registered DAIs*/
795 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
796 if (dai_link
->cpu_dai_of_node
) {
797 if (cpu_dai
->dev
->of_node
!= dai_link
->cpu_dai_of_node
)
800 if (strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
804 rtd
->cpu_dai
= cpu_dai
;
807 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
808 dai_link
->cpu_dai_name
);
811 /* do we already have the CODEC for this link ? */
816 /* no, then find CODEC from registered CODECs*/
817 list_for_each_entry(codec
, &codec_list
, list
) {
818 if (dai_link
->codec_of_node
) {
819 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
822 if (strcmp(codec
->name
, dai_link
->codec_name
))
829 * CODEC found, so find CODEC DAI from registered DAIs from
832 list_for_each_entry(codec_dai
, &dai_list
, list
) {
833 if (codec
->dev
== codec_dai
->dev
&&
834 !strcmp(codec_dai
->name
,
835 dai_link
->codec_dai_name
)) {
837 rtd
->codec_dai
= codec_dai
;
841 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
842 dai_link
->codec_dai_name
);
846 dev_dbg(card
->dev
, "CODEC %s not registered\n",
847 dai_link
->codec_name
);
850 /* do we need a platform? */
854 /* if there's no platform we match on the empty platform */
855 platform_name
= dai_link
->platform_name
;
856 if (!platform_name
&& !dai_link
->platform_of_node
)
857 platform_name
= "snd-soc-dummy";
859 /* no, then find one from the set of registered platforms */
860 list_for_each_entry(platform
, &platform_list
, list
) {
861 if (dai_link
->platform_of_node
) {
862 if (platform
->dev
->of_node
!=
863 dai_link
->platform_of_node
)
866 if (strcmp(platform
->name
, platform_name
))
870 rtd
->platform
= platform
;
874 dev_dbg(card
->dev
, "platform %s not registered\n",
875 dai_link
->platform_name
);
879 /* mark rtd as complete if we found all 4 of our client devices */
880 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
887 static void soc_remove_codec(struct snd_soc_codec
*codec
)
891 if (codec
->driver
->remove
) {
892 err
= codec
->driver
->remove(codec
);
895 "asoc: failed to remove %s: %d\n",
899 /* Make sure all DAPM widgets are freed */
900 snd_soc_dapm_free(&codec
->dapm
);
902 soc_cleanup_codec_debugfs(codec
);
904 list_del(&codec
->card_list
);
905 module_put(codec
->dev
->driver
->owner
);
908 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
910 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
911 struct snd_soc_codec
*codec
= rtd
->codec
;
912 struct snd_soc_platform
*platform
= rtd
->platform
;
913 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
916 /* unregister the rtd device */
917 if (rtd
->dev_registered
) {
918 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
919 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
920 device_unregister(rtd
->dev
);
921 rtd
->dev_registered
= 0;
924 /* remove the CODEC DAI */
925 if (codec_dai
&& codec_dai
->probed
&&
926 codec_dai
->driver
->remove_order
== order
) {
927 if (codec_dai
->driver
->remove
) {
928 err
= codec_dai
->driver
->remove(codec_dai
);
930 pr_err("asoc: failed to remove %s: %d\n",
931 codec_dai
->name
, err
);
933 codec_dai
->probed
= 0;
934 list_del(&codec_dai
->card_list
);
937 /* remove the platform */
938 if (platform
&& platform
->probed
&&
939 platform
->driver
->remove_order
== order
) {
940 if (platform
->driver
->remove
) {
941 err
= platform
->driver
->remove(platform
);
943 pr_err("asoc: failed to remove %s: %d\n",
944 platform
->name
, err
);
947 /* Make sure all DAPM widgets are freed */
948 snd_soc_dapm_free(&platform
->dapm
);
950 soc_cleanup_platform_debugfs(platform
);
951 platform
->probed
= 0;
952 list_del(&platform
->card_list
);
953 module_put(platform
->dev
->driver
->owner
);
956 /* remove the CODEC */
957 if (codec
&& codec
->probed
&&
958 codec
->driver
->remove_order
== order
)
959 soc_remove_codec(codec
);
961 /* remove the cpu_dai */
962 if (cpu_dai
&& cpu_dai
->probed
&&
963 cpu_dai
->driver
->remove_order
== order
) {
964 if (cpu_dai
->driver
->remove
) {
965 err
= cpu_dai
->driver
->remove(cpu_dai
);
967 pr_err("asoc: failed to remove %s: %d\n",
971 list_del(&cpu_dai
->card_list
);
972 module_put(cpu_dai
->dev
->driver
->owner
);
976 static void soc_remove_dai_links(struct snd_soc_card
*card
)
980 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
982 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
983 soc_remove_dai_link(card
, dai
, order
);
988 static void soc_set_name_prefix(struct snd_soc_card
*card
,
989 struct snd_soc_codec
*codec
)
993 if (card
->codec_conf
== NULL
)
996 for (i
= 0; i
< card
->num_configs
; i
++) {
997 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
998 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
999 codec
->name_prefix
= map
->name_prefix
;
1005 static int soc_probe_codec(struct snd_soc_card
*card
,
1006 struct snd_soc_codec
*codec
)
1009 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1010 struct snd_soc_dai
*dai
;
1013 codec
->dapm
.card
= card
;
1014 soc_set_name_prefix(card
, codec
);
1016 if (!try_module_get(codec
->dev
->driver
->owner
))
1019 soc_init_codec_debugfs(codec
);
1021 if (driver
->dapm_widgets
)
1022 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1023 driver
->num_dapm_widgets
);
1025 /* Create DAPM widgets for each DAI stream */
1026 list_for_each_entry(dai
, &dai_list
, list
) {
1027 if (dai
->dev
!= codec
->dev
)
1030 snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1033 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1035 if (driver
->probe
) {
1036 ret
= driver
->probe(codec
);
1039 "asoc: failed to probe CODEC %s: %d\n",
1045 if (driver
->controls
)
1046 snd_soc_add_codec_controls(codec
, driver
->controls
,
1047 driver
->num_controls
);
1048 if (driver
->dapm_routes
)
1049 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1050 driver
->num_dapm_routes
);
1052 /* mark codec as probed and add to card codec list */
1054 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1055 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1060 soc_cleanup_codec_debugfs(codec
);
1061 module_put(codec
->dev
->driver
->owner
);
1066 static int soc_probe_platform(struct snd_soc_card
*card
,
1067 struct snd_soc_platform
*platform
)
1070 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1072 platform
->card
= card
;
1073 platform
->dapm
.card
= card
;
1075 if (!try_module_get(platform
->dev
->driver
->owner
))
1078 soc_init_platform_debugfs(platform
);
1080 if (driver
->dapm_widgets
)
1081 snd_soc_dapm_new_controls(&platform
->dapm
,
1082 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1084 platform
->dapm
.idle_bias_off
= 1;
1086 if (driver
->probe
) {
1087 ret
= driver
->probe(platform
);
1089 dev_err(platform
->dev
,
1090 "asoc: failed to probe platform %s: %d\n",
1091 platform
->name
, ret
);
1096 if (driver
->controls
)
1097 snd_soc_add_platform_controls(platform
, driver
->controls
,
1098 driver
->num_controls
);
1099 if (driver
->dapm_routes
)
1100 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1101 driver
->num_dapm_routes
);
1103 /* mark platform as probed and add to card platform list */
1104 platform
->probed
= 1;
1105 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1106 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1111 soc_cleanup_platform_debugfs(platform
);
1112 module_put(platform
->dev
->driver
->owner
);
1117 static void rtd_release(struct device
*dev
)
1122 static int soc_post_component_init(struct snd_soc_card
*card
,
1123 struct snd_soc_codec
*codec
,
1124 int num
, int dailess
)
1126 struct snd_soc_dai_link
*dai_link
= NULL
;
1127 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1128 struct snd_soc_pcm_runtime
*rtd
;
1129 const char *temp
, *name
;
1133 dai_link
= &card
->dai_link
[num
];
1134 rtd
= &card
->rtd
[num
];
1135 name
= dai_link
->name
;
1137 aux_dev
= &card
->aux_dev
[num
];
1138 rtd
= &card
->rtd_aux
[num
];
1139 name
= aux_dev
->name
;
1143 /* Make sure all DAPM widgets are instantiated */
1144 snd_soc_dapm_new_widgets(&codec
->dapm
);
1146 /* machine controls, routes and widgets are not prefixed */
1147 temp
= codec
->name_prefix
;
1148 codec
->name_prefix
= NULL
;
1150 /* do machine specific initialization */
1151 if (!dailess
&& dai_link
->init
)
1152 ret
= dai_link
->init(rtd
);
1153 else if (dailess
&& aux_dev
->init
)
1154 ret
= aux_dev
->init(&codec
->dapm
);
1156 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1159 codec
->name_prefix
= temp
;
1161 /* register the rtd device */
1164 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1167 device_initialize(rtd
->dev
);
1168 rtd
->dev
->parent
= card
->dev
;
1169 rtd
->dev
->release
= rtd_release
;
1170 rtd
->dev
->init_name
= name
;
1171 dev_set_drvdata(rtd
->dev
, rtd
);
1172 mutex_init(&rtd
->pcm_mutex
);
1173 ret
= device_add(rtd
->dev
);
1176 "asoc: failed to register runtime device: %d\n", ret
);
1179 rtd
->dev_registered
= 1;
1181 /* add DAPM sysfs entries for this codec */
1182 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1185 "asoc: failed to add codec dapm sysfs entries: %d\n",
1188 /* add codec sysfs entries */
1189 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1192 "asoc: failed to add codec sysfs files: %d\n", ret
);
1197 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1199 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1200 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1201 struct snd_soc_codec
*codec
= rtd
->codec
;
1202 struct snd_soc_platform
*platform
= rtd
->platform
;
1203 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1206 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1207 card
->name
, num
, order
);
1209 /* config components */
1210 codec_dai
->codec
= codec
;
1211 cpu_dai
->platform
= platform
;
1212 codec_dai
->card
= card
;
1213 cpu_dai
->card
= card
;
1215 /* set default power off timeout */
1216 rtd
->pmdown_time
= pmdown_time
;
1218 /* probe the cpu_dai */
1219 if (!cpu_dai
->probed
&&
1220 cpu_dai
->driver
->probe_order
== order
) {
1221 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1224 if (cpu_dai
->driver
->probe
) {
1225 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1227 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1228 cpu_dai
->name
, ret
);
1229 module_put(cpu_dai
->dev
->driver
->owner
);
1233 cpu_dai
->probed
= 1;
1234 /* mark cpu_dai as probed and add to card dai list */
1235 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1238 /* probe the CODEC */
1239 if (!codec
->probed
&&
1240 codec
->driver
->probe_order
== order
) {
1241 ret
= soc_probe_codec(card
, codec
);
1246 /* probe the platform */
1247 if (!platform
->probed
&&
1248 platform
->driver
->probe_order
== order
) {
1249 ret
= soc_probe_platform(card
, platform
);
1254 /* probe the CODEC DAI */
1255 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1256 if (codec_dai
->driver
->probe
) {
1257 ret
= codec_dai
->driver
->probe(codec_dai
);
1259 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1260 codec_dai
->name
, ret
);
1265 /* mark codec_dai as probed and add to card dai list */
1266 codec_dai
->probed
= 1;
1267 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1270 /* complete DAI probe during last probe */
1271 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1274 ret
= soc_post_component_init(card
, codec
, num
, 0);
1278 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1280 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret
);
1282 /* create the pcm */
1283 ret
= soc_new_pcm(rtd
, num
);
1285 pr_err("asoc: can't create pcm %s :%d\n",
1286 dai_link
->stream_name
, ret
);
1290 /* add platform data for AC97 devices */
1291 if (rtd
->codec_dai
->driver
->ac97_control
)
1292 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1297 #ifdef CONFIG_SND_SOC_AC97_BUS
1298 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1302 /* Only instantiate AC97 if not already done by the adaptor
1303 * for the generic AC97 subsystem.
1305 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1307 * It is possible that the AC97 device is already registered to
1308 * the device subsystem. This happens when the device is created
1309 * via snd_ac97_mixer(). Currently only SoC codec that does so
1310 * is the generic AC97 glue but others migh emerge.
1312 * In those cases we don't try to register the device again.
1314 if (!rtd
->codec
->ac97_created
)
1317 ret
= soc_ac97_dev_register(rtd
->codec
);
1319 pr_err("asoc: AC97 device register failed:%d\n", ret
);
1323 rtd
->codec
->ac97_registered
= 1;
1328 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1330 if (codec
->ac97_registered
) {
1331 soc_ac97_dev_unregister(codec
);
1332 codec
->ac97_registered
= 0;
1337 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1339 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1340 struct snd_soc_codec
*codec
;
1343 /* find CODEC from registered CODECs*/
1344 list_for_each_entry(codec
, &codec_list
, list
) {
1345 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1346 if (codec
->probed
) {
1348 "asoc: codec already probed");
1355 /* codec not found */
1356 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1360 ret
= soc_probe_codec(card
, codec
);
1364 ret
= soc_post_component_init(card
, codec
, num
, 1);
1370 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1372 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1373 struct snd_soc_codec
*codec
= rtd
->codec
;
1375 /* unregister the rtd device */
1376 if (rtd
->dev_registered
) {
1377 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1378 device_del(rtd
->dev
);
1379 rtd
->dev_registered
= 0;
1382 if (codec
&& codec
->probed
)
1383 soc_remove_codec(codec
);
1386 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1387 enum snd_soc_compress_type compress_type
)
1391 if (codec
->cache_init
)
1394 /* override the compress_type if necessary */
1395 if (compress_type
&& codec
->compress_type
!= compress_type
)
1396 codec
->compress_type
= compress_type
;
1397 ret
= snd_soc_cache_init(codec
);
1399 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1403 codec
->cache_init
= 1;
1407 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1409 struct snd_soc_codec
*codec
;
1410 struct snd_soc_codec_conf
*codec_conf
;
1411 enum snd_soc_compress_type compress_type
;
1412 struct snd_soc_dai_link
*dai_link
;
1415 mutex_lock(&card
->mutex
);
1417 if (card
->instantiated
) {
1418 mutex_unlock(&card
->mutex
);
1423 for (i
= 0; i
< card
->num_links
; i
++)
1424 soc_bind_dai_link(card
, i
);
1426 /* bind completed ? */
1427 if (card
->num_rtd
!= card
->num_links
) {
1428 mutex_unlock(&card
->mutex
);
1432 /* initialize the register cache for each available codec */
1433 list_for_each_entry(codec
, &codec_list
, list
) {
1434 if (codec
->cache_init
)
1436 /* by default we don't override the compress_type */
1438 /* check to see if we need to override the compress_type */
1439 for (i
= 0; i
< card
->num_configs
; ++i
) {
1440 codec_conf
= &card
->codec_conf
[i
];
1441 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1442 compress_type
= codec_conf
->compress_type
;
1443 if (compress_type
&& compress_type
1444 != codec
->compress_type
)
1448 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1450 mutex_unlock(&card
->mutex
);
1455 /* card bind complete so register a sound card */
1456 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1457 card
->owner
, 0, &card
->snd_card
);
1459 pr_err("asoc: can't create sound card for card %s: %d\n",
1461 mutex_unlock(&card
->mutex
);
1464 card
->snd_card
->dev
= card
->dev
;
1466 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1467 card
->dapm
.dev
= card
->dev
;
1468 card
->dapm
.card
= card
;
1469 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1471 #ifdef CONFIG_DEBUG_FS
1472 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1475 #ifdef CONFIG_PM_SLEEP
1476 /* deferred resume work */
1477 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1480 if (card
->dapm_widgets
)
1481 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1482 card
->num_dapm_widgets
);
1484 /* initialise the sound card only once */
1486 ret
= card
->probe(card
);
1488 goto card_probe_error
;
1491 /* early DAI link probe */
1492 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1494 for (i
= 0; i
< card
->num_links
; i
++) {
1495 ret
= soc_probe_dai_link(card
, i
, order
);
1497 pr_err("asoc: failed to instantiate card %s: %d\n",
1504 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1505 ret
= soc_probe_aux_dev(card
, i
);
1507 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1509 goto probe_aux_dev_err
;
1513 snd_soc_dapm_link_dai_widgets(card
);
1516 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1518 if (card
->dapm_routes
)
1519 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1520 card
->num_dapm_routes
);
1522 snd_soc_dapm_new_widgets(&card
->dapm
);
1524 for (i
= 0; i
< card
->num_links
; i
++) {
1525 dai_link
= &card
->dai_link
[i
];
1527 if (dai_link
->dai_fmt
) {
1528 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1530 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1531 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1532 "Failed to set DAI format: %d\n",
1535 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1537 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1538 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1539 "Failed to set DAI format: %d\n",
1544 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1546 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1547 "%s", card
->long_name
? card
->long_name
: card
->name
);
1548 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1549 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1550 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1551 switch (card
->snd_card
->driver
[i
]) {
1557 if (!isalnum(card
->snd_card
->driver
[i
]))
1558 card
->snd_card
->driver
[i
] = '_';
1563 if (card
->late_probe
) {
1564 ret
= card
->late_probe(card
);
1566 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1568 goto probe_aux_dev_err
;
1572 snd_soc_dapm_new_widgets(&card
->dapm
);
1574 if (card
->fully_routed
)
1575 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1576 snd_soc_dapm_auto_nc_codec_pins(codec
);
1578 ret
= snd_card_register(card
->snd_card
);
1580 pr_err("asoc: failed to register soundcard for %s: %d\n",
1582 goto probe_aux_dev_err
;
1585 #ifdef CONFIG_SND_SOC_AC97_BUS
1586 /* register any AC97 codecs */
1587 for (i
= 0; i
< card
->num_rtd
; i
++) {
1588 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1590 pr_err("asoc: failed to register AC97 %s: %d\n",
1593 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1594 goto probe_aux_dev_err
;
1599 card
->instantiated
= 1;
1600 snd_soc_dapm_sync(&card
->dapm
);
1601 mutex_unlock(&card
->mutex
);
1605 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1606 soc_remove_aux_dev(card
, i
);
1609 soc_remove_dai_links(card
);
1615 snd_card_free(card
->snd_card
);
1617 mutex_unlock(&card
->mutex
);
1621 * Attempt to initialise any uninitialised cards. Must be called with
1624 static void snd_soc_instantiate_cards(void)
1626 struct snd_soc_card
*card
;
1627 list_for_each_entry(card
, &card_list
, list
)
1628 snd_soc_instantiate_card(card
);
1631 /* probes a new socdev */
1632 static int soc_probe(struct platform_device
*pdev
)
1634 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1638 * no card, so machine driver should be registering card
1639 * we should not be here in that case so ret error
1644 dev_warn(&pdev
->dev
,
1645 "ASoC machine %s should use snd_soc_register_card()\n",
1648 /* Bodge while we unpick instantiation */
1649 card
->dev
= &pdev
->dev
;
1651 ret
= snd_soc_register_card(card
);
1653 dev_err(&pdev
->dev
, "Failed to register card\n");
1660 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1664 /* make sure any delayed work runs */
1665 for (i
= 0; i
< card
->num_rtd
; i
++) {
1666 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1667 flush_delayed_work_sync(&rtd
->delayed_work
);
1670 /* remove auxiliary devices */
1671 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1672 soc_remove_aux_dev(card
, i
);
1674 /* remove and free each DAI */
1675 soc_remove_dai_links(card
);
1677 soc_cleanup_card_debugfs(card
);
1679 /* remove the card */
1683 snd_soc_dapm_free(&card
->dapm
);
1685 snd_card_free(card
->snd_card
);
1690 /* removes a socdev */
1691 static int soc_remove(struct platform_device
*pdev
)
1693 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1695 snd_soc_unregister_card(card
);
1699 int snd_soc_poweroff(struct device
*dev
)
1701 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1704 if (!card
->instantiated
)
1707 /* Flush out pmdown_time work - we actually do want to run it
1708 * now, we're shutting down so no imminent restart. */
1709 for (i
= 0; i
< card
->num_rtd
; i
++) {
1710 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1711 flush_delayed_work_sync(&rtd
->delayed_work
);
1714 snd_soc_dapm_shutdown(card
);
1718 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1720 const struct dev_pm_ops snd_soc_pm_ops
= {
1721 .suspend
= snd_soc_suspend
,
1722 .resume
= snd_soc_resume
,
1723 .freeze
= snd_soc_suspend
,
1724 .thaw
= snd_soc_resume
,
1725 .poweroff
= snd_soc_poweroff
,
1726 .restore
= snd_soc_resume
,
1728 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1730 /* ASoC platform driver */
1731 static struct platform_driver soc_driver
= {
1733 .name
= "soc-audio",
1734 .owner
= THIS_MODULE
,
1735 .pm
= &snd_soc_pm_ops
,
1738 .remove
= soc_remove
,
1742 * snd_soc_codec_volatile_register: Report if a register is volatile.
1744 * @codec: CODEC to query.
1745 * @reg: Register to query.
1747 * Boolean function indiciating if a CODEC register is volatile.
1749 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1752 if (codec
->volatile_register
)
1753 return codec
->volatile_register(codec
, reg
);
1757 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1760 * snd_soc_codec_readable_register: Report if a register is readable.
1762 * @codec: CODEC to query.
1763 * @reg: Register to query.
1765 * Boolean function indicating if a CODEC register is readable.
1767 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1770 if (codec
->readable_register
)
1771 return codec
->readable_register(codec
, reg
);
1775 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1778 * snd_soc_codec_writable_register: Report if a register is writable.
1780 * @codec: CODEC to query.
1781 * @reg: Register to query.
1783 * Boolean function indicating if a CODEC register is writable.
1785 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
1788 if (codec
->writable_register
)
1789 return codec
->writable_register(codec
, reg
);
1793 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
1795 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
1800 if (!platform
->driver
->read
) {
1801 dev_err(platform
->dev
, "platform has no read back\n");
1805 ret
= platform
->driver
->read(platform
, reg
);
1806 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
1807 trace_snd_soc_preg_read(platform
, reg
, ret
);
1811 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1813 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1814 unsigned int reg
, unsigned int val
)
1816 if (!platform
->driver
->write
) {
1817 dev_err(platform
->dev
, "platform has no write back\n");
1821 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1822 trace_snd_soc_preg_write(platform
, reg
, val
);
1823 return platform
->driver
->write(platform
, reg
, val
);
1825 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1828 * snd_soc_new_ac97_codec - initailise AC97 device
1829 * @codec: audio codec
1830 * @ops: AC97 bus operations
1831 * @num: AC97 codec number
1833 * Initialises AC97 codec resources for use by ad-hoc devices only.
1835 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1836 struct snd_ac97_bus_ops
*ops
, int num
)
1838 mutex_lock(&codec
->mutex
);
1840 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1841 if (codec
->ac97
== NULL
) {
1842 mutex_unlock(&codec
->mutex
);
1846 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1847 if (codec
->ac97
->bus
== NULL
) {
1850 mutex_unlock(&codec
->mutex
);
1854 codec
->ac97
->bus
->ops
= ops
;
1855 codec
->ac97
->num
= num
;
1858 * Mark the AC97 device to be created by us. This way we ensure that the
1859 * device will be registered with the device subsystem later on.
1861 codec
->ac97_created
= 1;
1863 mutex_unlock(&codec
->mutex
);
1866 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1869 * snd_soc_free_ac97_codec - free AC97 codec device
1870 * @codec: audio codec
1872 * Frees AC97 codec device resources.
1874 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1876 mutex_lock(&codec
->mutex
);
1877 #ifdef CONFIG_SND_SOC_AC97_BUS
1878 soc_unregister_ac97_dai_link(codec
);
1880 kfree(codec
->ac97
->bus
);
1883 codec
->ac97_created
= 0;
1884 mutex_unlock(&codec
->mutex
);
1886 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1888 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1892 ret
= codec
->read(codec
, reg
);
1893 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1894 trace_snd_soc_reg_read(codec
, reg
, ret
);
1898 EXPORT_SYMBOL_GPL(snd_soc_read
);
1900 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
1901 unsigned int reg
, unsigned int val
)
1903 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
1904 trace_snd_soc_reg_write(codec
, reg
, val
);
1905 return codec
->write(codec
, reg
, val
);
1907 EXPORT_SYMBOL_GPL(snd_soc_write
);
1909 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
1910 unsigned int reg
, const void *data
, size_t len
)
1912 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
1914 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
1917 * snd_soc_update_bits - update codec register bits
1918 * @codec: audio codec
1919 * @reg: codec register
1920 * @mask: register mask
1923 * Writes new register value.
1925 * Returns 1 for change, 0 for no change, or negative error code.
1927 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1928 unsigned int mask
, unsigned int value
)
1931 unsigned int old
, new;
1934 if (codec
->using_regmap
) {
1935 ret
= regmap_update_bits_check(codec
->control_data
, reg
,
1936 mask
, value
, &change
);
1938 ret
= snd_soc_read(codec
, reg
);
1943 new = (old
& ~mask
) | (value
& mask
);
1944 change
= old
!= new;
1946 ret
= snd_soc_write(codec
, reg
, new);
1954 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1957 * snd_soc_update_bits_locked - update codec register bits
1958 * @codec: audio codec
1959 * @reg: codec register
1960 * @mask: register mask
1963 * Writes new register value, and takes the codec mutex.
1965 * Returns 1 for change else 0.
1967 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1968 unsigned short reg
, unsigned int mask
,
1973 mutex_lock(&codec
->mutex
);
1974 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1975 mutex_unlock(&codec
->mutex
);
1979 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1982 * snd_soc_test_bits - test register for change
1983 * @codec: audio codec
1984 * @reg: codec register
1985 * @mask: register mask
1988 * Tests a register with a new value and checks if the new value is
1989 * different from the old value.
1991 * Returns 1 for change else 0.
1993 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1994 unsigned int mask
, unsigned int value
)
1997 unsigned int old
, new;
1999 old
= snd_soc_read(codec
, reg
);
2000 new = (old
& ~mask
) | value
;
2001 change
= old
!= new;
2005 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2008 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2009 * @substream: the pcm substream
2010 * @hw: the hardware parameters
2012 * Sets the substream runtime hardware parameters.
2014 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2015 const struct snd_pcm_hardware
*hw
)
2017 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2018 runtime
->hw
.info
= hw
->info
;
2019 runtime
->hw
.formats
= hw
->formats
;
2020 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2021 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2022 runtime
->hw
.periods_min
= hw
->periods_min
;
2023 runtime
->hw
.periods_max
= hw
->periods_max
;
2024 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2025 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2028 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2031 * snd_soc_cnew - create new control
2032 * @_template: control template
2033 * @data: control private data
2034 * @long_name: control long name
2035 * @prefix: control name prefix
2037 * Create a new mixer control from a template control.
2039 * Returns 0 for success, else error.
2041 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2042 void *data
, const char *long_name
,
2045 struct snd_kcontrol_new
template;
2046 struct snd_kcontrol
*kcontrol
;
2050 memcpy(&template, _template
, sizeof(template));
2054 long_name
= template.name
;
2057 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2058 name
= kmalloc(name_len
, GFP_KERNEL
);
2062 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2064 template.name
= name
;
2066 template.name
= long_name
;
2069 kcontrol
= snd_ctl_new1(&template, data
);
2075 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2077 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2078 const struct snd_kcontrol_new
*controls
, int num_controls
,
2079 const char *prefix
, void *data
)
2083 for (i
= 0; i
< num_controls
; i
++) {
2084 const struct snd_kcontrol_new
*control
= &controls
[i
];
2085 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2086 control
->name
, prefix
));
2088 dev_err(dev
, "Failed to add %s: %d\n", control
->name
, err
);
2097 * snd_soc_add_codec_controls - add an array of controls to a codec.
2098 * Convenience function to add a list of controls. Many codecs were
2099 * duplicating this code.
2101 * @codec: codec to add controls to
2102 * @controls: array of controls to add
2103 * @num_controls: number of elements in the array
2105 * Return 0 for success, else error.
2107 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2108 const struct snd_kcontrol_new
*controls
, int num_controls
)
2110 struct snd_card
*card
= codec
->card
->snd_card
;
2112 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2113 codec
->name_prefix
, codec
);
2115 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2118 * snd_soc_add_platform_controls - add an array of controls to a platform.
2119 * Convenience function to add a list of controls.
2121 * @platform: platform to add controls to
2122 * @controls: array of controls to add
2123 * @num_controls: number of elements in the array
2125 * Return 0 for success, else error.
2127 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2128 const struct snd_kcontrol_new
*controls
, int num_controls
)
2130 struct snd_card
*card
= platform
->card
->snd_card
;
2132 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2135 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2138 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2139 * Convenience function to add a list of controls.
2141 * @soc_card: SoC card to add controls to
2142 * @controls: array of controls to add
2143 * @num_controls: number of elements in the array
2145 * Return 0 for success, else error.
2147 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2148 const struct snd_kcontrol_new
*controls
, int num_controls
)
2150 struct snd_card
*card
= soc_card
->snd_card
;
2152 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2155 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2158 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2159 * Convienience function to add a list of controls.
2161 * @dai: DAI to add controls to
2162 * @controls: array of controls to add
2163 * @num_controls: number of elements in the array
2165 * Return 0 for success, else error.
2167 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2168 const struct snd_kcontrol_new
*controls
, int num_controls
)
2170 struct snd_card
*card
= dai
->card
->snd_card
;
2172 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2175 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2178 * snd_soc_info_enum_double - enumerated double mixer info callback
2179 * @kcontrol: mixer control
2180 * @uinfo: control element information
2182 * Callback to provide information about a double enumerated
2185 * Returns 0 for success.
2187 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2188 struct snd_ctl_elem_info
*uinfo
)
2190 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2192 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2193 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2194 uinfo
->value
.enumerated
.items
= e
->max
;
2196 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2197 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2198 strcpy(uinfo
->value
.enumerated
.name
,
2199 e
->texts
[uinfo
->value
.enumerated
.item
]);
2202 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2205 * snd_soc_get_enum_double - enumerated double mixer get callback
2206 * @kcontrol: mixer control
2207 * @ucontrol: control element information
2209 * Callback to get the value of a double enumerated mixer.
2211 * Returns 0 for success.
2213 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2214 struct snd_ctl_elem_value
*ucontrol
)
2216 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2217 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2218 unsigned int val
, bitmask
;
2220 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2222 val
= snd_soc_read(codec
, e
->reg
);
2223 ucontrol
->value
.enumerated
.item
[0]
2224 = (val
>> e
->shift_l
) & (bitmask
- 1);
2225 if (e
->shift_l
!= e
->shift_r
)
2226 ucontrol
->value
.enumerated
.item
[1] =
2227 (val
>> e
->shift_r
) & (bitmask
- 1);
2231 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2234 * snd_soc_put_enum_double - enumerated double mixer put callback
2235 * @kcontrol: mixer control
2236 * @ucontrol: control element information
2238 * Callback to set the value of a double enumerated mixer.
2240 * Returns 0 for success.
2242 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2243 struct snd_ctl_elem_value
*ucontrol
)
2245 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2246 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2248 unsigned int mask
, bitmask
;
2250 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2252 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2254 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2255 mask
= (bitmask
- 1) << e
->shift_l
;
2256 if (e
->shift_l
!= e
->shift_r
) {
2257 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2259 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2260 mask
|= (bitmask
- 1) << e
->shift_r
;
2263 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2265 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2268 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2269 * @kcontrol: mixer control
2270 * @ucontrol: control element information
2272 * Callback to get the value of a double semi enumerated mixer.
2274 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2275 * used for handling bitfield coded enumeration for example.
2277 * Returns 0 for success.
2279 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2280 struct snd_ctl_elem_value
*ucontrol
)
2282 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2283 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2284 unsigned int reg_val
, val
, mux
;
2286 reg_val
= snd_soc_read(codec
, e
->reg
);
2287 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2288 for (mux
= 0; mux
< e
->max
; mux
++) {
2289 if (val
== e
->values
[mux
])
2292 ucontrol
->value
.enumerated
.item
[0] = mux
;
2293 if (e
->shift_l
!= e
->shift_r
) {
2294 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2295 for (mux
= 0; mux
< e
->max
; mux
++) {
2296 if (val
== e
->values
[mux
])
2299 ucontrol
->value
.enumerated
.item
[1] = mux
;
2304 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2307 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2308 * @kcontrol: mixer control
2309 * @ucontrol: control element information
2311 * Callback to set the value of a double semi enumerated mixer.
2313 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2314 * used for handling bitfield coded enumeration for example.
2316 * Returns 0 for success.
2318 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2319 struct snd_ctl_elem_value
*ucontrol
)
2321 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2322 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2326 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2328 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2329 mask
= e
->mask
<< e
->shift_l
;
2330 if (e
->shift_l
!= e
->shift_r
) {
2331 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2333 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2334 mask
|= e
->mask
<< e
->shift_r
;
2337 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2339 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2342 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2343 * @kcontrol: mixer control
2344 * @uinfo: control element information
2346 * Callback to provide information about an external enumerated
2349 * Returns 0 for success.
2351 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2352 struct snd_ctl_elem_info
*uinfo
)
2354 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2356 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2358 uinfo
->value
.enumerated
.items
= e
->max
;
2360 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2361 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2362 strcpy(uinfo
->value
.enumerated
.name
,
2363 e
->texts
[uinfo
->value
.enumerated
.item
]);
2366 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2369 * snd_soc_info_volsw_ext - external single mixer info callback
2370 * @kcontrol: mixer control
2371 * @uinfo: control element information
2373 * Callback to provide information about a single external mixer control.
2375 * Returns 0 for success.
2377 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2378 struct snd_ctl_elem_info
*uinfo
)
2380 int max
= kcontrol
->private_value
;
2382 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2383 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2385 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2388 uinfo
->value
.integer
.min
= 0;
2389 uinfo
->value
.integer
.max
= max
;
2392 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2395 * snd_soc_info_volsw - single mixer info callback
2396 * @kcontrol: mixer control
2397 * @uinfo: control element information
2399 * Callback to provide information about a single mixer control, or a double
2400 * mixer control that spans 2 registers.
2402 * Returns 0 for success.
2404 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2405 struct snd_ctl_elem_info
*uinfo
)
2407 struct soc_mixer_control
*mc
=
2408 (struct soc_mixer_control
*)kcontrol
->private_value
;
2411 if (!mc
->platform_max
)
2412 mc
->platform_max
= mc
->max
;
2413 platform_max
= mc
->platform_max
;
2415 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2416 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2418 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2420 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2421 uinfo
->value
.integer
.min
= 0;
2422 uinfo
->value
.integer
.max
= platform_max
;
2425 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2428 * snd_soc_get_volsw - single mixer get callback
2429 * @kcontrol: mixer control
2430 * @ucontrol: control element information
2432 * Callback to get the value of a single mixer control, or a double mixer
2433 * control that spans 2 registers.
2435 * Returns 0 for success.
2437 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2438 struct snd_ctl_elem_value
*ucontrol
)
2440 struct soc_mixer_control
*mc
=
2441 (struct soc_mixer_control
*)kcontrol
->private_value
;
2442 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2443 unsigned int reg
= mc
->reg
;
2444 unsigned int reg2
= mc
->rreg
;
2445 unsigned int shift
= mc
->shift
;
2446 unsigned int rshift
= mc
->rshift
;
2448 unsigned int mask
= (1 << fls(max
)) - 1;
2449 unsigned int invert
= mc
->invert
;
2451 ucontrol
->value
.integer
.value
[0] =
2452 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2454 ucontrol
->value
.integer
.value
[0] =
2455 max
- ucontrol
->value
.integer
.value
[0];
2457 if (snd_soc_volsw_is_stereo(mc
)) {
2459 ucontrol
->value
.integer
.value
[1] =
2460 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2462 ucontrol
->value
.integer
.value
[1] =
2463 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2465 ucontrol
->value
.integer
.value
[1] =
2466 max
- ucontrol
->value
.integer
.value
[1];
2471 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2474 * snd_soc_put_volsw - single mixer put callback
2475 * @kcontrol: mixer control
2476 * @ucontrol: control element information
2478 * Callback to set the value of a single mixer control, or a double mixer
2479 * control that spans 2 registers.
2481 * Returns 0 for success.
2483 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2484 struct snd_ctl_elem_value
*ucontrol
)
2486 struct soc_mixer_control
*mc
=
2487 (struct soc_mixer_control
*)kcontrol
->private_value
;
2488 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2489 unsigned int reg
= mc
->reg
;
2490 unsigned int reg2
= mc
->rreg
;
2491 unsigned int shift
= mc
->shift
;
2492 unsigned int rshift
= mc
->rshift
;
2494 unsigned int mask
= (1 << fls(max
)) - 1;
2495 unsigned int invert
= mc
->invert
;
2498 unsigned int val2
= 0;
2499 unsigned int val
, val_mask
;
2501 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2504 val_mask
= mask
<< shift
;
2506 if (snd_soc_volsw_is_stereo(mc
)) {
2507 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2511 val_mask
|= mask
<< rshift
;
2512 val
|= val2
<< rshift
;
2514 val2
= val2
<< shift
;
2518 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2523 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2527 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2530 * snd_soc_info_volsw_s8 - signed mixer info callback
2531 * @kcontrol: mixer control
2532 * @uinfo: control element information
2534 * Callback to provide information about a signed mixer control.
2536 * Returns 0 for success.
2538 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2539 struct snd_ctl_elem_info
*uinfo
)
2541 struct soc_mixer_control
*mc
=
2542 (struct soc_mixer_control
*)kcontrol
->private_value
;
2546 if (!mc
->platform_max
)
2547 mc
->platform_max
= mc
->max
;
2548 platform_max
= mc
->platform_max
;
2550 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2552 uinfo
->value
.integer
.min
= 0;
2553 uinfo
->value
.integer
.max
= platform_max
- min
;
2556 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2559 * snd_soc_get_volsw_s8 - signed mixer get callback
2560 * @kcontrol: mixer control
2561 * @ucontrol: control element information
2563 * Callback to get the value of a signed mixer control.
2565 * Returns 0 for success.
2567 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2568 struct snd_ctl_elem_value
*ucontrol
)
2570 struct soc_mixer_control
*mc
=
2571 (struct soc_mixer_control
*)kcontrol
->private_value
;
2572 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2573 unsigned int reg
= mc
->reg
;
2575 int val
= snd_soc_read(codec
, reg
);
2577 ucontrol
->value
.integer
.value
[0] =
2578 ((signed char)(val
& 0xff))-min
;
2579 ucontrol
->value
.integer
.value
[1] =
2580 ((signed char)((val
>> 8) & 0xff))-min
;
2583 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2586 * snd_soc_put_volsw_sgn - signed mixer put callback
2587 * @kcontrol: mixer control
2588 * @ucontrol: control element information
2590 * Callback to set the value of a signed mixer control.
2592 * Returns 0 for success.
2594 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2595 struct snd_ctl_elem_value
*ucontrol
)
2597 struct soc_mixer_control
*mc
=
2598 (struct soc_mixer_control
*)kcontrol
->private_value
;
2599 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2600 unsigned int reg
= mc
->reg
;
2604 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2605 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2607 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2609 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2612 * snd_soc_limit_volume - Set new limit to an existing volume control.
2614 * @codec: where to look for the control
2615 * @name: Name of the control
2616 * @max: new maximum limit
2618 * Return 0 for success, else error.
2620 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2621 const char *name
, int max
)
2623 struct snd_card
*card
= codec
->card
->snd_card
;
2624 struct snd_kcontrol
*kctl
;
2625 struct soc_mixer_control
*mc
;
2629 /* Sanity check for name and max */
2630 if (unlikely(!name
|| max
<= 0))
2633 list_for_each_entry(kctl
, &card
->controls
, list
) {
2634 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2640 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2641 if (max
<= mc
->max
) {
2642 mc
->platform_max
= max
;
2648 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2651 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2652 * mixer info callback
2653 * @kcontrol: mixer control
2654 * @uinfo: control element information
2656 * Returns 0 for success.
2658 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2659 struct snd_ctl_elem_info
*uinfo
)
2661 struct soc_mixer_control
*mc
=
2662 (struct soc_mixer_control
*)kcontrol
->private_value
;
2666 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2668 uinfo
->value
.integer
.min
= 0;
2669 uinfo
->value
.integer
.max
= max
-min
;
2673 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2676 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2677 * mixer get callback
2678 * @kcontrol: mixer control
2679 * @uinfo: control element information
2681 * Returns 0 for success.
2683 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2684 struct snd_ctl_elem_value
*ucontrol
)
2686 struct soc_mixer_control
*mc
=
2687 (struct soc_mixer_control
*)kcontrol
->private_value
;
2688 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2689 unsigned int mask
= (1<<mc
->shift
)-1;
2691 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2692 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2694 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2695 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2698 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2701 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2702 * mixer put callback
2703 * @kcontrol: mixer control
2704 * @uinfo: control element information
2706 * Returns 0 for success.
2708 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2709 struct snd_ctl_elem_value
*ucontrol
)
2711 struct soc_mixer_control
*mc
=
2712 (struct soc_mixer_control
*)kcontrol
->private_value
;
2713 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2714 unsigned int mask
= (1<<mc
->shift
)-1;
2717 unsigned int val
, valr
, oval
, ovalr
;
2719 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2721 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2724 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2725 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2729 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2733 if (ovalr
!= valr
) {
2734 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2741 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2743 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
2744 struct snd_ctl_elem_info
*uinfo
)
2746 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2747 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2749 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
2750 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
2754 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
2756 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
2757 struct snd_ctl_elem_value
*ucontrol
)
2759 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2760 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2763 if (codec
->using_regmap
)
2764 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
2765 ucontrol
->value
.bytes
.data
,
2766 params
->num_regs
* codec
->val_bytes
);
2770 /* Hide any masked bytes to ensure consistent data reporting */
2771 if (ret
== 0 && params
->mask
) {
2772 switch (codec
->val_bytes
) {
2774 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
2777 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
2781 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
2791 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
2793 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
2794 struct snd_ctl_elem_value
*ucontrol
)
2796 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2797 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2802 if (!codec
->using_regmap
)
2805 data
= ucontrol
->value
.bytes
.data
;
2806 len
= params
->num_regs
* codec
->val_bytes
;
2809 * If we've got a mask then we need to preserve the register
2810 * bits. We shouldn't modify the incoming data so take a
2814 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
2818 val
&= params
->mask
;
2820 data
= kmemdup(data
, len
, GFP_KERNEL
);
2824 switch (codec
->val_bytes
) {
2826 ((u8
*)data
)[0] &= ~params
->mask
;
2827 ((u8
*)data
)[0] |= val
;
2830 ((u16
*)data
)[0] &= cpu_to_be16(~params
->mask
);
2831 ((u16
*)data
)[0] |= cpu_to_be16(val
);
2834 ((u32
*)data
)[0] &= cpu_to_be32(~params
->mask
);
2835 ((u32
*)data
)[0] |= cpu_to_be32(val
);
2842 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
2850 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
2853 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2855 * @clk_id: DAI specific clock ID
2856 * @freq: new clock frequency in Hz
2857 * @dir: new clock direction - input/output.
2859 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2861 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2862 unsigned int freq
, int dir
)
2864 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2865 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2866 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2867 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2872 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2875 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2877 * @clk_id: DAI specific clock ID
2878 * @source: Source for the clock
2879 * @freq: new clock frequency in Hz
2880 * @dir: new clock direction - input/output.
2882 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2884 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2885 int source
, unsigned int freq
, int dir
)
2887 if (codec
->driver
->set_sysclk
)
2888 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2893 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2896 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2898 * @div_id: DAI specific clock divider ID
2899 * @div: new clock divisor.
2901 * Configures the clock dividers. This is used to derive the best DAI bit and
2902 * frame clocks from the system or master clock. It's best to set the DAI bit
2903 * and frame clocks as low as possible to save system power.
2905 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2906 int div_id
, int div
)
2908 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2909 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2913 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2916 * snd_soc_dai_set_pll - configure DAI PLL.
2918 * @pll_id: DAI specific PLL ID
2919 * @source: DAI specific source for the PLL
2920 * @freq_in: PLL input clock frequency in Hz
2921 * @freq_out: requested PLL output clock frequency in Hz
2923 * Configures and enables PLL to generate output clock based on input clock.
2925 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2926 unsigned int freq_in
, unsigned int freq_out
)
2928 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2929 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2931 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2932 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2937 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2940 * snd_soc_codec_set_pll - configure codec PLL.
2942 * @pll_id: DAI specific PLL ID
2943 * @source: DAI specific source for the PLL
2944 * @freq_in: PLL input clock frequency in Hz
2945 * @freq_out: requested PLL output clock frequency in Hz
2947 * Configures and enables PLL to generate output clock based on input clock.
2949 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2950 unsigned int freq_in
, unsigned int freq_out
)
2952 if (codec
->driver
->set_pll
)
2953 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2958 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2961 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2963 * @fmt: SND_SOC_DAIFMT_ format value.
2965 * Configures the DAI hardware format and clocking.
2967 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2969 if (dai
->driver
== NULL
)
2971 if (dai
->driver
->ops
->set_fmt
== NULL
)
2973 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2975 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2978 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2980 * @tx_mask: bitmask representing active TX slots.
2981 * @rx_mask: bitmask representing active RX slots.
2982 * @slots: Number of slots in use.
2983 * @slot_width: Width in bits for each slot.
2985 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2988 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2989 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2991 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2992 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2997 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3000 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3002 * @tx_num: how many TX channels
3003 * @tx_slot: pointer to an array which imply the TX slot number channel
3005 * @rx_num: how many RX channels
3006 * @rx_slot: pointer to an array which imply the RX slot number channel
3009 * configure the relationship between channel number and TDM slot number.
3011 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3012 unsigned int tx_num
, unsigned int *tx_slot
,
3013 unsigned int rx_num
, unsigned int *rx_slot
)
3015 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3016 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3021 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3024 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3026 * @tristate: tristate enable
3028 * Tristates the DAI so that others can use it.
3030 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3032 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3033 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3037 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3040 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3042 * @mute: mute enable
3044 * Mutes the DAI DAC.
3046 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
3048 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
3049 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3053 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3056 * snd_soc_register_card - Register a card with the ASoC core
3058 * @card: Card to register
3061 int snd_soc_register_card(struct snd_soc_card
*card
)
3065 if (!card
->name
|| !card
->dev
)
3068 for (i
= 0; i
< card
->num_links
; i
++) {
3069 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3072 * Codec must be specified by 1 of name or OF node,
3073 * not both or neither.
3075 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3077 "Neither/both codec name/of_node are set for %s\n",
3083 * Platform may be specified by either name or OF node, but
3084 * can be left unspecified, and a dummy platform will be used.
3086 if (link
->platform_name
&& link
->platform_of_node
) {
3088 "Both platform name/of_node are set for %s\n", link
->name
);
3093 * CPU DAI must be specified by 1 of name or OF node,
3094 * not both or neither.
3096 if (!!link
->cpu_dai_name
== !!link
->cpu_dai_of_node
) {
3098 "Neither/both cpu_dai name/of_node are set for %s\n",
3104 dev_set_drvdata(card
->dev
, card
);
3106 snd_soc_initialize_card_lists(card
);
3108 soc_init_card_debugfs(card
);
3110 card
->rtd
= devm_kzalloc(card
->dev
,
3111 sizeof(struct snd_soc_pcm_runtime
) *
3112 (card
->num_links
+ card
->num_aux_devs
),
3114 if (card
->rtd
== NULL
)
3117 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3119 for (i
= 0; i
< card
->num_links
; i
++)
3120 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3122 INIT_LIST_HEAD(&card
->list
);
3123 INIT_LIST_HEAD(&card
->dapm_dirty
);
3124 card
->instantiated
= 0;
3125 mutex_init(&card
->mutex
);
3127 mutex_lock(&client_mutex
);
3128 list_add(&card
->list
, &card_list
);
3129 snd_soc_instantiate_cards();
3130 mutex_unlock(&client_mutex
);
3132 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
3136 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3139 * snd_soc_unregister_card - Unregister a card with the ASoC core
3141 * @card: Card to unregister
3144 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3146 if (card
->instantiated
)
3147 soc_cleanup_card_resources(card
);
3148 mutex_lock(&client_mutex
);
3149 list_del(&card
->list
);
3150 mutex_unlock(&client_mutex
);
3151 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
3155 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3158 * Simplify DAI link configuration by removing ".-1" from device names
3159 * and sanitizing names.
3161 static char *fmt_single_name(struct device
*dev
, int *id
)
3163 char *found
, name
[NAME_SIZE
];
3166 if (dev_name(dev
) == NULL
)
3169 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3171 /* are we a "%s.%d" name (platform and SPI components) */
3172 found
= strstr(name
, dev
->driver
->name
);
3175 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3177 /* discard ID from name if ID == -1 */
3179 found
[strlen(dev
->driver
->name
)] = '\0';
3183 /* I2C component devices are named "bus-addr" */
3184 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3185 char tmp
[NAME_SIZE
];
3187 /* create unique ID number from I2C addr and bus */
3188 *id
= ((id1
& 0xffff) << 16) + id2
;
3190 /* sanitize component name for DAI link creation */
3191 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3192 strlcpy(name
, tmp
, NAME_SIZE
);
3197 return kstrdup(name
, GFP_KERNEL
);
3201 * Simplify DAI link naming for single devices with multiple DAIs by removing
3202 * any ".-1" and using the DAI name (instead of device name).
3204 static inline char *fmt_multiple_name(struct device
*dev
,
3205 struct snd_soc_dai_driver
*dai_drv
)
3207 if (dai_drv
->name
== NULL
) {
3208 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3213 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3217 * snd_soc_register_dai - Register a DAI with the ASoC core
3219 * @dai: DAI to register
3221 int snd_soc_register_dai(struct device
*dev
,
3222 struct snd_soc_dai_driver
*dai_drv
)
3224 struct snd_soc_dai
*dai
;
3226 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3228 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3232 /* create DAI component name */
3233 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3234 if (dai
->name
== NULL
) {
3240 dai
->driver
= dai_drv
;
3241 if (!dai
->driver
->ops
)
3242 dai
->driver
->ops
= &null_dai_ops
;
3244 mutex_lock(&client_mutex
);
3245 list_add(&dai
->list
, &dai_list
);
3246 snd_soc_instantiate_cards();
3247 mutex_unlock(&client_mutex
);
3249 pr_debug("Registered DAI '%s'\n", dai
->name
);
3253 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3256 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3258 * @dai: DAI to unregister
3260 void snd_soc_unregister_dai(struct device
*dev
)
3262 struct snd_soc_dai
*dai
;
3264 list_for_each_entry(dai
, &dai_list
, list
) {
3265 if (dev
== dai
->dev
)
3271 mutex_lock(&client_mutex
);
3272 list_del(&dai
->list
);
3273 mutex_unlock(&client_mutex
);
3275 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3279 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3282 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3284 * @dai: Array of DAIs to register
3285 * @count: Number of DAIs
3287 int snd_soc_register_dais(struct device
*dev
,
3288 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3290 struct snd_soc_dai
*dai
;
3293 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3295 for (i
= 0; i
< count
; i
++) {
3297 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3303 /* create DAI component name */
3304 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3305 if (dai
->name
== NULL
) {
3312 dai
->driver
= &dai_drv
[i
];
3313 if (dai
->driver
->id
)
3314 dai
->id
= dai
->driver
->id
;
3317 if (!dai
->driver
->ops
)
3318 dai
->driver
->ops
= &null_dai_ops
;
3320 mutex_lock(&client_mutex
);
3321 list_add(&dai
->list
, &dai_list
);
3322 mutex_unlock(&client_mutex
);
3324 pr_debug("Registered DAI '%s'\n", dai
->name
);
3327 mutex_lock(&client_mutex
);
3328 snd_soc_instantiate_cards();
3329 mutex_unlock(&client_mutex
);
3333 for (i
--; i
>= 0; i
--)
3334 snd_soc_unregister_dai(dev
);
3338 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3341 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3343 * @dai: Array of DAIs to unregister
3344 * @count: Number of DAIs
3346 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3350 for (i
= 0; i
< count
; i
++)
3351 snd_soc_unregister_dai(dev
);
3353 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3356 * snd_soc_register_platform - Register a platform with the ASoC core
3358 * @platform: platform to register
3360 int snd_soc_register_platform(struct device
*dev
,
3361 struct snd_soc_platform_driver
*platform_drv
)
3363 struct snd_soc_platform
*platform
;
3365 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3367 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3368 if (platform
== NULL
)
3371 /* create platform component name */
3372 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3373 if (platform
->name
== NULL
) {
3378 platform
->dev
= dev
;
3379 platform
->driver
= platform_drv
;
3380 platform
->dapm
.dev
= dev
;
3381 platform
->dapm
.platform
= platform
;
3382 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3383 mutex_init(&platform
->mutex
);
3385 mutex_lock(&client_mutex
);
3386 list_add(&platform
->list
, &platform_list
);
3387 snd_soc_instantiate_cards();
3388 mutex_unlock(&client_mutex
);
3390 pr_debug("Registered platform '%s'\n", platform
->name
);
3394 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3397 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3399 * @platform: platform to unregister
3401 void snd_soc_unregister_platform(struct device
*dev
)
3403 struct snd_soc_platform
*platform
;
3405 list_for_each_entry(platform
, &platform_list
, list
) {
3406 if (dev
== platform
->dev
)
3412 mutex_lock(&client_mutex
);
3413 list_del(&platform
->list
);
3414 mutex_unlock(&client_mutex
);
3416 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3417 kfree(platform
->name
);
3420 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3422 static u64 codec_format_map
[] = {
3423 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3424 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3425 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3426 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3427 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3428 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3429 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3430 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3431 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3432 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3433 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3434 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3435 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3436 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3437 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3438 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3441 /* Fix up the DAI formats for endianness: codecs don't actually see
3442 * the endianness of the data but we're using the CPU format
3443 * definitions which do need to include endianness so we ensure that
3444 * codec DAIs always have both big and little endian variants set.
3446 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3450 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3451 if (stream
->formats
& codec_format_map
[i
])
3452 stream
->formats
|= codec_format_map
[i
];
3456 * snd_soc_register_codec - Register a codec with the ASoC core
3458 * @codec: codec to register
3460 int snd_soc_register_codec(struct device
*dev
,
3461 const struct snd_soc_codec_driver
*codec_drv
,
3462 struct snd_soc_dai_driver
*dai_drv
,
3466 struct snd_soc_codec
*codec
;
3469 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3471 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3475 /* create CODEC component name */
3476 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3477 if (codec
->name
== NULL
) {
3482 if (codec_drv
->compress_type
)
3483 codec
->compress_type
= codec_drv
->compress_type
;
3485 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3487 codec
->write
= codec_drv
->write
;
3488 codec
->read
= codec_drv
->read
;
3489 codec
->volatile_register
= codec_drv
->volatile_register
;
3490 codec
->readable_register
= codec_drv
->readable_register
;
3491 codec
->writable_register
= codec_drv
->writable_register
;
3492 codec
->ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
3493 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3494 codec
->dapm
.dev
= dev
;
3495 codec
->dapm
.codec
= codec
;
3496 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3497 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
3499 codec
->driver
= codec_drv
;
3500 codec
->num_dai
= num_dai
;
3501 mutex_init(&codec
->mutex
);
3503 /* allocate CODEC register cache */
3504 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3505 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3506 codec
->reg_size
= reg_size
;
3507 /* it is necessary to make a copy of the default register cache
3508 * because in the case of using a compression type that requires
3509 * the default register cache to be marked as __devinitconst the
3510 * kernel might have freed the array by the time we initialize
3513 if (codec_drv
->reg_cache_default
) {
3514 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3515 reg_size
, GFP_KERNEL
);
3516 if (!codec
->reg_def_copy
) {
3523 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3524 if (!codec
->volatile_register
)
3525 codec
->volatile_register
= snd_soc_default_volatile_register
;
3526 if (!codec
->readable_register
)
3527 codec
->readable_register
= snd_soc_default_readable_register
;
3528 if (!codec
->writable_register
)
3529 codec
->writable_register
= snd_soc_default_writable_register
;
3532 for (i
= 0; i
< num_dai
; i
++) {
3533 fixup_codec_formats(&dai_drv
[i
].playback
);
3534 fixup_codec_formats(&dai_drv
[i
].capture
);
3537 /* register any DAIs */
3539 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3544 mutex_lock(&client_mutex
);
3545 list_add(&codec
->list
, &codec_list
);
3546 snd_soc_instantiate_cards();
3547 mutex_unlock(&client_mutex
);
3549 pr_debug("Registered codec '%s'\n", codec
->name
);
3553 kfree(codec
->reg_def_copy
);
3554 codec
->reg_def_copy
= NULL
;
3559 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3562 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3564 * @codec: codec to unregister
3566 void snd_soc_unregister_codec(struct device
*dev
)
3568 struct snd_soc_codec
*codec
;
3571 list_for_each_entry(codec
, &codec_list
, list
) {
3572 if (dev
== codec
->dev
)
3579 for (i
= 0; i
< codec
->num_dai
; i
++)
3580 snd_soc_unregister_dai(dev
);
3582 mutex_lock(&client_mutex
);
3583 list_del(&codec
->list
);
3584 mutex_unlock(&client_mutex
);
3586 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3588 snd_soc_cache_exit(codec
);
3589 kfree(codec
->reg_def_copy
);
3593 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3595 /* Retrieve a card's name from device tree */
3596 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3597 const char *propname
)
3599 struct device_node
*np
= card
->dev
->of_node
;
3602 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3604 * EINVAL means the property does not exist. This is fine providing
3605 * card->name was previously set, which is checked later in
3606 * snd_soc_register_card.
3608 if (ret
< 0 && ret
!= -EINVAL
) {
3610 "Property '%s' could not be read: %d\n",
3617 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3619 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3620 const char *propname
)
3622 struct device_node
*np
= card
->dev
->of_node
;
3624 struct snd_soc_dapm_route
*routes
;
3627 num_routes
= of_property_count_strings(np
, propname
);
3628 if (num_routes
< 0 || num_routes
& 1) {
3630 "Property '%s' does not exist or its length is not even\n",
3637 "Property '%s's length is zero\n",
3642 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3646 "Could not allocate DAPM route table\n");
3650 for (i
= 0; i
< num_routes
; i
++) {
3651 ret
= of_property_read_string_index(np
, propname
,
3652 2 * i
, &routes
[i
].sink
);
3655 "Property '%s' index %d could not be read: %d\n",
3656 propname
, 2 * i
, ret
);
3659 ret
= of_property_read_string_index(np
, propname
,
3660 (2 * i
) + 1, &routes
[i
].source
);
3663 "Property '%s' index %d could not be read: %d\n",
3664 propname
, (2 * i
) + 1, ret
);
3669 card
->num_dapm_routes
= num_routes
;
3670 card
->dapm_routes
= routes
;
3674 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3676 static int __init
snd_soc_init(void)
3678 #ifdef CONFIG_DEBUG_FS
3679 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3680 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3681 pr_warn("ASoC: Failed to create debugfs directory\n");
3682 snd_soc_debugfs_root
= NULL
;
3685 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3687 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3689 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3691 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3693 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3694 &platform_list_fops
))
3695 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3698 snd_soc_util_init();
3700 return platform_driver_register(&soc_driver
);
3702 module_init(snd_soc_init
);
3704 static void __exit
snd_soc_exit(void)
3706 snd_soc_util_exit();
3708 #ifdef CONFIG_DEBUG_FS
3709 debugfs_remove_recursive(snd_soc_debugfs_root
);
3711 platform_driver_unregister(&soc_driver
);
3713 module_exit(snd_soc_exit
);
3715 /* Module information */
3716 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3717 MODULE_DESCRIPTION("ALSA SoC Core");
3718 MODULE_LICENSE("GPL");
3719 MODULE_ALIAS("platform:soc-audio");