2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
52 #ifdef CONFIG_DEBUG_FS
53 struct dentry
*snd_soc_debugfs_root
;
54 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
57 static DEFINE_MUTEX(client_mutex
);
58 static LIST_HEAD(dai_list
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
61 static LIST_HEAD(component_list
);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time
= 5000;
69 module_param(pmdown_time
, int, 0);
70 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
72 /* returns the minimum number of bytes needed to represent
73 * a particular given value */
74 static int min_bytes_needed(unsigned long val
)
79 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
82 c
= (sizeof val
* 8) - c
;
90 /* fill buf which is 'len' bytes with a formatted
91 * string of the form 'reg: value\n' */
92 static int format_register_str(struct snd_soc_codec
*codec
,
93 unsigned int reg
, char *buf
, size_t len
)
95 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
96 int regsize
= codec
->driver
->reg_word_size
* 2;
99 char regbuf
[regsize
+ 1];
101 /* since tmpbuf is allocated on the stack, warn the callers if they
102 * try to abuse this function */
105 /* +2 for ': ' and + 1 for '\n' */
106 if (wordsize
+ regsize
+ 2 + 1 != len
)
109 ret
= snd_soc_read(codec
, reg
);
111 memset(regbuf
, 'X', regsize
);
112 regbuf
[regsize
] = '\0';
114 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
117 /* prepare the buffer */
118 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
119 /* copy it back to the caller without the '\0' */
120 memcpy(buf
, tmpbuf
, len
);
125 /* codec register dump */
126 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
127 size_t count
, loff_t pos
)
130 int wordsize
, regsize
;
135 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
136 regsize
= codec
->driver
->reg_word_size
* 2;
138 len
= wordsize
+ regsize
+ 2 + 1;
140 if (!codec
->driver
->reg_cache_size
)
143 if (codec
->driver
->reg_cache_step
)
144 step
= codec
->driver
->reg_cache_step
;
146 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
147 if (!snd_soc_codec_readable_register(codec
, i
))
149 if (codec
->driver
->display_register
) {
150 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
151 PAGE_SIZE
- count
, i
);
153 /* only support larger than PAGE_SIZE bytes debugfs
154 * entries for the default case */
156 if (total
+ len
>= count
- 1)
158 format_register_str(codec
, i
, buf
+ total
, len
);
165 total
= min(total
, count
- 1);
170 static ssize_t
codec_reg_show(struct device
*dev
,
171 struct device_attribute
*attr
, char *buf
)
173 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
175 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
178 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
180 static ssize_t
pmdown_time_show(struct device
*dev
,
181 struct device_attribute
*attr
, char *buf
)
183 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
185 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
188 static ssize_t
pmdown_time_set(struct device
*dev
,
189 struct device_attribute
*attr
,
190 const char *buf
, size_t count
)
192 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
195 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
202 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
204 #ifdef CONFIG_DEBUG_FS
205 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
206 size_t count
, loff_t
*ppos
)
209 struct snd_soc_codec
*codec
= file
->private_data
;
212 if (*ppos
< 0 || !count
)
215 buf
= kmalloc(count
, GFP_KERNEL
);
219 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
221 if (copy_to_user(user_buf
, buf
, ret
)) {
232 static ssize_t
codec_reg_write_file(struct file
*file
,
233 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
238 unsigned long reg
, value
;
239 struct snd_soc_codec
*codec
= file
->private_data
;
241 buf_size
= min(count
, (sizeof(buf
)-1));
242 if (copy_from_user(buf
, user_buf
, buf_size
))
246 while (*start
== ' ')
248 reg
= simple_strtoul(start
, &start
, 16);
249 while (*start
== ' ')
251 if (strict_strtoul(start
, 16, &value
))
254 /* Userspace has been fiddling around behind the kernel's back */
255 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
257 snd_soc_write(codec
, reg
, value
);
261 static const struct file_operations codec_reg_fops
= {
263 .read
= codec_reg_read_file
,
264 .write
= codec_reg_write_file
,
265 .llseek
= default_llseek
,
268 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
270 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
272 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
274 if (!codec
->debugfs_codec_root
) {
275 dev_warn(codec
->dev
, "ASoC: Failed to create codec debugfs"
280 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
282 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
285 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
286 codec
->debugfs_codec_root
,
287 codec
, &codec_reg_fops
);
288 if (!codec
->debugfs_reg
)
289 dev_warn(codec
->dev
, "ASoC: Failed to create codec register"
292 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
295 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
297 debugfs_remove_recursive(codec
->debugfs_codec_root
);
300 static void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
302 struct dentry
*debugfs_card_root
= platform
->card
->debugfs_card_root
;
304 platform
->debugfs_platform_root
= debugfs_create_dir(platform
->name
,
306 if (!platform
->debugfs_platform_root
) {
307 dev_warn(platform
->dev
,
308 "ASoC: Failed to create platform debugfs directory\n");
312 snd_soc_dapm_debugfs_init(&platform
->dapm
,
313 platform
->debugfs_platform_root
);
316 static void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
318 debugfs_remove_recursive(platform
->debugfs_platform_root
);
321 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
322 size_t count
, loff_t
*ppos
)
324 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
325 ssize_t len
, ret
= 0;
326 struct snd_soc_codec
*codec
;
331 list_for_each_entry(codec
, &codec_list
, list
) {
332 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
336 if (ret
> PAGE_SIZE
) {
343 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
350 static const struct file_operations codec_list_fops
= {
351 .read
= codec_list_read_file
,
352 .llseek
= default_llseek
,/* read accesses f_pos */
355 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
356 size_t count
, loff_t
*ppos
)
358 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
359 ssize_t len
, ret
= 0;
360 struct snd_soc_dai
*dai
;
365 list_for_each_entry(dai
, &dai_list
, list
) {
366 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
369 if (ret
> PAGE_SIZE
) {
375 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
382 static const struct file_operations dai_list_fops
= {
383 .read
= dai_list_read_file
,
384 .llseek
= default_llseek
,/* read accesses f_pos */
387 static ssize_t
platform_list_read_file(struct file
*file
,
388 char __user
*user_buf
,
389 size_t count
, loff_t
*ppos
)
391 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
392 ssize_t len
, ret
= 0;
393 struct snd_soc_platform
*platform
;
398 list_for_each_entry(platform
, &platform_list
, list
) {
399 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
403 if (ret
> PAGE_SIZE
) {
409 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
416 static const struct file_operations platform_list_fops
= {
417 .read
= platform_list_read_file
,
418 .llseek
= default_llseek
,/* read accesses f_pos */
421 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
423 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
424 snd_soc_debugfs_root
);
425 if (!card
->debugfs_card_root
) {
427 "ASoC: Failed to create card debugfs directory\n");
431 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
432 card
->debugfs_card_root
,
434 if (!card
->debugfs_pop_time
)
436 "ASoC: Failed to create pop time debugfs file\n");
439 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
441 debugfs_remove_recursive(card
->debugfs_card_root
);
446 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
450 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
454 static inline void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
458 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
462 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
466 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
471 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
472 const char *dai_link
, int stream
)
476 for (i
= 0; i
< card
->num_links
; i
++) {
477 if (card
->rtd
[i
].dai_link
->no_pcm
&&
478 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
479 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
481 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
484 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
486 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
487 const char *dai_link
)
491 for (i
= 0; i
< card
->num_links
; i
++) {
492 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
493 return &card
->rtd
[i
];
495 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
498 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
500 #ifdef CONFIG_SND_SOC_AC97_BUS
501 /* unregister ac97 codec */
502 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
504 if (codec
->ac97
->dev
.bus
)
505 device_unregister(&codec
->ac97
->dev
);
509 /* stop no dev release warning */
510 static void soc_ac97_device_release(struct device
*dev
){}
512 /* register ac97 codec to bus */
513 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
517 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
518 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
519 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
521 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
522 codec
->card
->snd_card
->number
, 0, codec
->name
);
523 err
= device_register(&codec
->ac97
->dev
);
525 dev_err(codec
->dev
, "ASoC: Can't register ac97 bus\n");
526 codec
->ac97
->dev
.bus
= NULL
;
533 #ifdef CONFIG_PM_SLEEP
534 /* powers down audio subsystem for suspend */
535 int snd_soc_suspend(struct device
*dev
)
537 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
538 struct snd_soc_codec
*codec
;
541 /* If the initialization of this soc device failed, there is no codec
542 * associated with it. Just bail out in this case.
544 if (list_empty(&card
->codec_dev_list
))
547 /* Due to the resume being scheduled into a workqueue we could
548 * suspend before that's finished - wait for it to complete.
550 snd_power_lock(card
->snd_card
);
551 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
552 snd_power_unlock(card
->snd_card
);
554 /* we're going to block userspace touching us until resume completes */
555 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
557 /* mute any active DACs */
558 for (i
= 0; i
< card
->num_rtd
; i
++) {
559 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
560 struct snd_soc_dai_driver
*drv
= dai
->driver
;
562 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
565 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
566 drv
->ops
->digital_mute(dai
, 1);
569 /* suspend all pcms */
570 for (i
= 0; i
< card
->num_rtd
; i
++) {
571 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
574 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
577 if (card
->suspend_pre
)
578 card
->suspend_pre(card
);
580 for (i
= 0; i
< card
->num_rtd
; i
++) {
581 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
582 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
584 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
587 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
588 cpu_dai
->driver
->suspend(cpu_dai
);
589 if (platform
->driver
->suspend
&& !platform
->suspended
) {
590 platform
->driver
->suspend(cpu_dai
);
591 platform
->suspended
= 1;
595 /* close any waiting streams and save state */
596 for (i
= 0; i
< card
->num_rtd
; i
++) {
597 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
598 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
601 for (i
= 0; i
< card
->num_rtd
; i
++) {
603 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
606 snd_soc_dapm_stream_event(&card
->rtd
[i
],
607 SNDRV_PCM_STREAM_PLAYBACK
,
608 SND_SOC_DAPM_STREAM_SUSPEND
);
610 snd_soc_dapm_stream_event(&card
->rtd
[i
],
611 SNDRV_PCM_STREAM_CAPTURE
,
612 SND_SOC_DAPM_STREAM_SUSPEND
);
615 /* Recheck all analogue paths too */
616 dapm_mark_io_dirty(&card
->dapm
);
617 snd_soc_dapm_sync(&card
->dapm
);
619 /* suspend all CODECs */
620 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
621 /* If there are paths active then the CODEC will be held with
622 * bias _ON and should not be suspended. */
623 if (!codec
->suspended
&& codec
->driver
->suspend
) {
624 switch (codec
->dapm
.bias_level
) {
625 case SND_SOC_BIAS_STANDBY
:
627 * If the CODEC is capable of idle
628 * bias off then being in STANDBY
629 * means it's doing something,
630 * otherwise fall through.
632 if (codec
->dapm
.idle_bias_off
) {
634 "ASoC: idle_bias_off CODEC on"
638 case SND_SOC_BIAS_OFF
:
639 codec
->driver
->suspend(codec
);
640 codec
->suspended
= 1;
641 codec
->cache_sync
= 1;
642 if (codec
->using_regmap
)
643 regcache_mark_dirty(codec
->control_data
);
646 dev_dbg(codec
->dev
, "ASoC: CODEC is on"
653 for (i
= 0; i
< card
->num_rtd
; i
++) {
654 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
656 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
659 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
660 cpu_dai
->driver
->suspend(cpu_dai
);
663 if (card
->suspend_post
)
664 card
->suspend_post(card
);
668 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
670 /* deferred resume work, so resume can complete before we finished
671 * setting our codec back up, which can be very slow on I2C
673 static void soc_resume_deferred(struct work_struct
*work
)
675 struct snd_soc_card
*card
=
676 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
677 struct snd_soc_codec
*codec
;
680 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
681 * so userspace apps are blocked from touching us
684 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
686 /* Bring us up into D2 so that DAPM starts enabling things */
687 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
689 if (card
->resume_pre
)
690 card
->resume_pre(card
);
692 /* resume AC97 DAIs */
693 for (i
= 0; i
< card
->num_rtd
; i
++) {
694 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
696 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
699 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
700 cpu_dai
->driver
->resume(cpu_dai
);
703 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
704 /* If the CODEC was idle over suspend then it will have been
705 * left with bias OFF or STANDBY and suspended so we must now
706 * resume. Otherwise the suspend was suppressed.
708 if (codec
->driver
->resume
&& codec
->suspended
) {
709 switch (codec
->dapm
.bias_level
) {
710 case SND_SOC_BIAS_STANDBY
:
711 case SND_SOC_BIAS_OFF
:
712 codec
->driver
->resume(codec
);
713 codec
->suspended
= 0;
716 dev_dbg(codec
->dev
, "ASoC: CODEC was on over"
723 for (i
= 0; i
< card
->num_rtd
; i
++) {
725 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
728 snd_soc_dapm_stream_event(&card
->rtd
[i
],
729 SNDRV_PCM_STREAM_PLAYBACK
,
730 SND_SOC_DAPM_STREAM_RESUME
);
732 snd_soc_dapm_stream_event(&card
->rtd
[i
],
733 SNDRV_PCM_STREAM_CAPTURE
,
734 SND_SOC_DAPM_STREAM_RESUME
);
737 /* unmute any active DACs */
738 for (i
= 0; i
< card
->num_rtd
; i
++) {
739 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
740 struct snd_soc_dai_driver
*drv
= dai
->driver
;
742 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
745 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
746 drv
->ops
->digital_mute(dai
, 0);
749 for (i
= 0; i
< card
->num_rtd
; i
++) {
750 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
751 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
753 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
756 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
757 cpu_dai
->driver
->resume(cpu_dai
);
758 if (platform
->driver
->resume
&& platform
->suspended
) {
759 platform
->driver
->resume(cpu_dai
);
760 platform
->suspended
= 0;
764 if (card
->resume_post
)
765 card
->resume_post(card
);
767 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
769 /* userspace can access us now we are back as we were before */
770 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
772 /* Recheck all analogue paths too */
773 dapm_mark_io_dirty(&card
->dapm
);
774 snd_soc_dapm_sync(&card
->dapm
);
777 /* powers up audio subsystem after a suspend */
778 int snd_soc_resume(struct device
*dev
)
780 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
781 int i
, ac97_control
= 0;
783 /* If the initialization of this soc device failed, there is no codec
784 * associated with it. Just bail out in this case.
786 if (list_empty(&card
->codec_dev_list
))
789 /* AC97 devices might have other drivers hanging off them so
790 * need to resume immediately. Other drivers don't have that
791 * problem and may take a substantial amount of time to resume
792 * due to I/O costs and anti-pop so handle them out of line.
794 for (i
= 0; i
< card
->num_rtd
; i
++) {
795 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
796 ac97_control
|= cpu_dai
->driver
->ac97_control
;
799 dev_dbg(dev
, "ASoC: Resuming AC97 immediately\n");
800 soc_resume_deferred(&card
->deferred_resume_work
);
802 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
803 if (!schedule_work(&card
->deferred_resume_work
))
804 dev_err(dev
, "ASoC: resume work item may be lost\n");
809 EXPORT_SYMBOL_GPL(snd_soc_resume
);
811 #define snd_soc_suspend NULL
812 #define snd_soc_resume NULL
815 static const struct snd_soc_dai_ops null_dai_ops
= {
818 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
820 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
821 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
822 struct snd_soc_codec
*codec
;
823 struct snd_soc_platform
*platform
;
824 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
825 const char *platform_name
;
827 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
829 /* Find CPU DAI from registered DAIs*/
830 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
831 if (dai_link
->cpu_of_node
&&
832 (cpu_dai
->dev
->of_node
!= dai_link
->cpu_of_node
))
834 if (dai_link
->cpu_name
&&
835 strcmp(dev_name(cpu_dai
->dev
), dai_link
->cpu_name
))
837 if (dai_link
->cpu_dai_name
&&
838 strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
841 rtd
->cpu_dai
= cpu_dai
;
845 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
846 dai_link
->cpu_dai_name
);
847 return -EPROBE_DEFER
;
850 /* Find CODEC from registered CODECs */
851 list_for_each_entry(codec
, &codec_list
, list
) {
852 if (dai_link
->codec_of_node
) {
853 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
856 if (strcmp(codec
->name
, dai_link
->codec_name
))
863 * CODEC found, so find CODEC DAI from registered DAIs from
866 list_for_each_entry(codec_dai
, &dai_list
, list
) {
867 if (codec
->dev
== codec_dai
->dev
&&
868 !strcmp(codec_dai
->name
,
869 dai_link
->codec_dai_name
)) {
871 rtd
->codec_dai
= codec_dai
;
875 if (!rtd
->codec_dai
) {
876 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
877 dai_link
->codec_dai_name
);
878 return -EPROBE_DEFER
;
883 dev_err(card
->dev
, "ASoC: CODEC %s not registered\n",
884 dai_link
->codec_name
);
885 return -EPROBE_DEFER
;
888 /* if there's no platform we match on the empty platform */
889 platform_name
= dai_link
->platform_name
;
890 if (!platform_name
&& !dai_link
->platform_of_node
)
891 platform_name
= "snd-soc-dummy";
893 /* find one from the set of registered platforms */
894 list_for_each_entry(platform
, &platform_list
, list
) {
895 if (dai_link
->platform_of_node
) {
896 if (platform
->dev
->of_node
!=
897 dai_link
->platform_of_node
)
900 if (strcmp(platform
->name
, platform_name
))
904 rtd
->platform
= platform
;
906 if (!rtd
->platform
) {
907 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
908 dai_link
->platform_name
);
909 return -EPROBE_DEFER
;
917 static int soc_remove_platform(struct snd_soc_platform
*platform
)
921 if (platform
->driver
->remove
) {
922 ret
= platform
->driver
->remove(platform
);
924 dev_err(platform
->dev
, "ASoC: failed to remove %d\n",
928 /* Make sure all DAPM widgets are freed */
929 snd_soc_dapm_free(&platform
->dapm
);
931 soc_cleanup_platform_debugfs(platform
);
932 platform
->probed
= 0;
933 list_del(&platform
->card_list
);
934 module_put(platform
->dev
->driver
->owner
);
939 static void soc_remove_codec(struct snd_soc_codec
*codec
)
943 if (codec
->driver
->remove
) {
944 err
= codec
->driver
->remove(codec
);
946 dev_err(codec
->dev
, "ASoC: failed to remove %d\n", err
);
949 /* Make sure all DAPM widgets are freed */
950 snd_soc_dapm_free(&codec
->dapm
);
952 soc_cleanup_codec_debugfs(codec
);
954 list_del(&codec
->card_list
);
955 module_put(codec
->dev
->driver
->owner
);
958 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
960 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
961 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
964 /* unregister the rtd device */
965 if (rtd
->dev_registered
) {
966 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
967 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
968 device_unregister(rtd
->dev
);
969 rtd
->dev_registered
= 0;
972 /* remove the CODEC DAI */
973 if (codec_dai
&& codec_dai
->probed
&&
974 codec_dai
->driver
->remove_order
== order
) {
975 if (codec_dai
->driver
->remove
) {
976 err
= codec_dai
->driver
->remove(codec_dai
);
978 dev_err(codec_dai
->dev
,
979 "ASoC: failed to remove %s: %d\n",
980 codec_dai
->name
, err
);
982 codec_dai
->probed
= 0;
983 list_del(&codec_dai
->card_list
);
986 /* remove the cpu_dai */
987 if (cpu_dai
&& cpu_dai
->probed
&&
988 cpu_dai
->driver
->remove_order
== order
) {
989 if (cpu_dai
->driver
->remove
) {
990 err
= cpu_dai
->driver
->remove(cpu_dai
);
992 dev_err(cpu_dai
->dev
,
993 "ASoC: failed to remove %s: %d\n",
997 list_del(&cpu_dai
->card_list
);
999 if (!cpu_dai
->codec
) {
1000 snd_soc_dapm_free(&cpu_dai
->dapm
);
1001 module_put(cpu_dai
->dev
->driver
->owner
);
1006 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1009 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1010 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1011 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1012 struct snd_soc_platform
*platform
= rtd
->platform
;
1013 struct snd_soc_codec
*codec
;
1015 /* remove the platform */
1016 if (platform
&& platform
->probed
&&
1017 platform
->driver
->remove_order
== order
) {
1018 soc_remove_platform(platform
);
1021 /* remove the CODEC-side CODEC */
1023 codec
= codec_dai
->codec
;
1024 if (codec
&& codec
->probed
&&
1025 codec
->driver
->remove_order
== order
)
1026 soc_remove_codec(codec
);
1029 /* remove any CPU-side CODEC */
1031 codec
= cpu_dai
->codec
;
1032 if (codec
&& codec
->probed
&&
1033 codec
->driver
->remove_order
== order
)
1034 soc_remove_codec(codec
);
1038 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1042 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1044 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1045 soc_remove_link_dais(card
, dai
, order
);
1048 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1050 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1051 soc_remove_link_components(card
, dai
, order
);
1057 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1058 struct snd_soc_codec
*codec
)
1062 if (card
->codec_conf
== NULL
)
1065 for (i
= 0; i
< card
->num_configs
; i
++) {
1066 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1067 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1068 codec
->name_prefix
= map
->name_prefix
;
1074 static int soc_probe_codec(struct snd_soc_card
*card
,
1075 struct snd_soc_codec
*codec
)
1078 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1079 struct snd_soc_dai
*dai
;
1082 codec
->dapm
.card
= card
;
1083 soc_set_name_prefix(card
, codec
);
1085 if (!try_module_get(codec
->dev
->driver
->owner
))
1088 soc_init_codec_debugfs(codec
);
1090 if (driver
->dapm_widgets
)
1091 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
1092 driver
->num_dapm_widgets
);
1094 /* Create DAPM widgets for each DAI stream */
1095 list_for_each_entry(dai
, &dai_list
, list
) {
1096 if (dai
->dev
!= codec
->dev
)
1099 snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1102 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1104 if (driver
->probe
) {
1105 ret
= driver
->probe(codec
);
1108 "ASoC: failed to probe CODEC %d\n", ret
);
1111 WARN(codec
->dapm
.idle_bias_off
&&
1112 codec
->dapm
.bias_level
!= SND_SOC_BIAS_OFF
,
1113 "codec %s can not start from non-off bias"
1114 " with idle_bias_off==1\n", codec
->name
);
1117 /* If the driver didn't set I/O up try regmap */
1118 if (!codec
->write
&& dev_get_regmap(codec
->dev
, NULL
))
1119 snd_soc_codec_set_cache_io(codec
, 0, 0, SND_SOC_REGMAP
);
1121 if (driver
->controls
)
1122 snd_soc_add_codec_controls(codec
, driver
->controls
,
1123 driver
->num_controls
);
1124 if (driver
->dapm_routes
)
1125 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1126 driver
->num_dapm_routes
);
1128 /* mark codec as probed and add to card codec list */
1130 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1131 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1136 soc_cleanup_codec_debugfs(codec
);
1137 module_put(codec
->dev
->driver
->owner
);
1142 static int soc_probe_platform(struct snd_soc_card
*card
,
1143 struct snd_soc_platform
*platform
)
1146 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1147 struct snd_soc_dai
*dai
;
1149 platform
->card
= card
;
1150 platform
->dapm
.card
= card
;
1152 if (!try_module_get(platform
->dev
->driver
->owner
))
1155 soc_init_platform_debugfs(platform
);
1157 if (driver
->dapm_widgets
)
1158 snd_soc_dapm_new_controls(&platform
->dapm
,
1159 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1161 /* Create DAPM widgets for each DAI stream */
1162 list_for_each_entry(dai
, &dai_list
, list
) {
1163 if (dai
->dev
!= platform
->dev
)
1166 snd_soc_dapm_new_dai_widgets(&platform
->dapm
, dai
);
1169 platform
->dapm
.idle_bias_off
= 1;
1171 if (driver
->probe
) {
1172 ret
= driver
->probe(platform
);
1174 dev_err(platform
->dev
,
1175 "ASoC: failed to probe platform %d\n", ret
);
1180 if (driver
->controls
)
1181 snd_soc_add_platform_controls(platform
, driver
->controls
,
1182 driver
->num_controls
);
1183 if (driver
->dapm_routes
)
1184 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1185 driver
->num_dapm_routes
);
1187 /* mark platform as probed and add to card platform list */
1188 platform
->probed
= 1;
1189 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1190 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1195 soc_cleanup_platform_debugfs(platform
);
1196 module_put(platform
->dev
->driver
->owner
);
1201 static void rtd_release(struct device
*dev
)
1206 static int soc_post_component_init(struct snd_soc_card
*card
,
1207 struct snd_soc_codec
*codec
,
1208 int num
, int dailess
)
1210 struct snd_soc_dai_link
*dai_link
= NULL
;
1211 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1212 struct snd_soc_pcm_runtime
*rtd
;
1213 const char *temp
, *name
;
1217 dai_link
= &card
->dai_link
[num
];
1218 rtd
= &card
->rtd
[num
];
1219 name
= dai_link
->name
;
1221 aux_dev
= &card
->aux_dev
[num
];
1222 rtd
= &card
->rtd_aux
[num
];
1223 name
= aux_dev
->name
;
1227 /* Make sure all DAPM widgets are instantiated */
1228 snd_soc_dapm_new_widgets(&codec
->dapm
);
1230 /* machine controls, routes and widgets are not prefixed */
1231 temp
= codec
->name_prefix
;
1232 codec
->name_prefix
= NULL
;
1234 /* do machine specific initialization */
1235 if (!dailess
&& dai_link
->init
)
1236 ret
= dai_link
->init(rtd
);
1237 else if (dailess
&& aux_dev
->init
)
1238 ret
= aux_dev
->init(&codec
->dapm
);
1240 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n", name
, ret
);
1243 codec
->name_prefix
= temp
;
1245 /* register the rtd device */
1248 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1251 device_initialize(rtd
->dev
);
1252 rtd
->dev
->parent
= card
->dev
;
1253 rtd
->dev
->release
= rtd_release
;
1254 rtd
->dev
->init_name
= name
;
1255 dev_set_drvdata(rtd
->dev
, rtd
);
1256 mutex_init(&rtd
->pcm_mutex
);
1257 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1258 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1259 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1260 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1261 ret
= device_add(rtd
->dev
);
1263 /* calling put_device() here to free the rtd->dev */
1264 put_device(rtd
->dev
);
1266 "ASoC: failed to register runtime device: %d\n", ret
);
1269 rtd
->dev_registered
= 1;
1271 /* add DAPM sysfs entries for this codec */
1272 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1275 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret
);
1277 /* add codec sysfs entries */
1278 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1281 "ASoC: failed to add codec sysfs files: %d\n", ret
);
1283 #ifdef CONFIG_DEBUG_FS
1284 /* add DPCM sysfs entries */
1285 if (!dailess
&& !dai_link
->dynamic
)
1288 ret
= soc_dpcm_debugfs_add(rtd
);
1290 dev_err(rtd
->dev
, "ASoC: failed to add dpcm sysfs entries: %d\n", ret
);
1297 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1300 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1301 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1302 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1303 struct snd_soc_platform
*platform
= rtd
->platform
;
1306 /* probe the CPU-side component, if it is a CODEC */
1307 if (cpu_dai
->codec
&&
1308 !cpu_dai
->codec
->probed
&&
1309 cpu_dai
->codec
->driver
->probe_order
== order
) {
1310 ret
= soc_probe_codec(card
, cpu_dai
->codec
);
1315 /* probe the CODEC-side component */
1316 if (!codec_dai
->codec
->probed
&&
1317 codec_dai
->codec
->driver
->probe_order
== order
) {
1318 ret
= soc_probe_codec(card
, codec_dai
->codec
);
1323 /* probe the platform */
1324 if (!platform
->probed
&&
1325 platform
->driver
->probe_order
== order
) {
1326 ret
= soc_probe_platform(card
, platform
);
1334 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1336 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1337 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1338 struct snd_soc_codec
*codec
= rtd
->codec
;
1339 struct snd_soc_platform
*platform
= rtd
->platform
;
1340 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1341 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1342 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1345 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1346 card
->name
, num
, order
);
1348 /* config components */
1349 cpu_dai
->platform
= platform
;
1350 codec_dai
->card
= card
;
1351 cpu_dai
->card
= card
;
1353 /* set default power off timeout */
1354 rtd
->pmdown_time
= pmdown_time
;
1356 /* probe the cpu_dai */
1357 if (!cpu_dai
->probed
&&
1358 cpu_dai
->driver
->probe_order
== order
) {
1359 if (!cpu_dai
->codec
) {
1360 cpu_dai
->dapm
.card
= card
;
1361 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1364 list_add(&cpu_dai
->dapm
.list
, &card
->dapm_list
);
1365 snd_soc_dapm_new_dai_widgets(&cpu_dai
->dapm
, cpu_dai
);
1368 if (cpu_dai
->driver
->probe
) {
1369 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1371 dev_err(cpu_dai
->dev
,
1372 "ASoC: failed to probe CPU DAI %s: %d\n",
1373 cpu_dai
->name
, ret
);
1374 module_put(cpu_dai
->dev
->driver
->owner
);
1378 cpu_dai
->probed
= 1;
1379 /* mark cpu_dai as probed and add to card dai list */
1380 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1383 /* probe the CODEC DAI */
1384 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1385 if (codec_dai
->driver
->probe
) {
1386 ret
= codec_dai
->driver
->probe(codec_dai
);
1388 dev_err(codec_dai
->dev
,
1389 "ASoC: failed to probe CODEC DAI %s: %d\n",
1390 codec_dai
->name
, ret
);
1395 /* mark codec_dai as probed and add to card dai list */
1396 codec_dai
->probed
= 1;
1397 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1400 /* complete DAI probe during last probe */
1401 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1404 ret
= soc_post_component_init(card
, codec
, num
, 0);
1408 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1410 dev_warn(rtd
->dev
, "ASoC: failed to add pmdown_time sysfs: %d\n",
1413 if (cpu_dai
->driver
->compress_dai
) {
1414 /*create compress_device"*/
1415 ret
= soc_new_compress(rtd
, num
);
1417 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1418 dai_link
->stream_name
);
1423 if (!dai_link
->params
) {
1424 /* create the pcm */
1425 ret
= soc_new_pcm(rtd
, num
);
1427 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1428 dai_link
->stream_name
, ret
);
1432 /* link the DAI widgets */
1433 play_w
= codec_dai
->playback_widget
;
1434 capture_w
= cpu_dai
->capture_widget
;
1435 if (play_w
&& capture_w
) {
1436 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1439 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1440 play_w
->name
, capture_w
->name
, ret
);
1445 play_w
= cpu_dai
->playback_widget
;
1446 capture_w
= codec_dai
->capture_widget
;
1447 if (play_w
&& capture_w
) {
1448 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1451 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1452 play_w
->name
, capture_w
->name
, ret
);
1459 /* add platform data for AC97 devices */
1460 if (rtd
->codec_dai
->driver
->ac97_control
)
1461 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1466 #ifdef CONFIG_SND_SOC_AC97_BUS
1467 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1471 /* Only instantiate AC97 if not already done by the adaptor
1472 * for the generic AC97 subsystem.
1474 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1476 * It is possible that the AC97 device is already registered to
1477 * the device subsystem. This happens when the device is created
1478 * via snd_ac97_mixer(). Currently only SoC codec that does so
1479 * is the generic AC97 glue but others migh emerge.
1481 * In those cases we don't try to register the device again.
1483 if (!rtd
->codec
->ac97_created
)
1486 ret
= soc_ac97_dev_register(rtd
->codec
);
1488 dev_err(rtd
->codec
->dev
,
1489 "ASoC: AC97 device register failed: %d\n", ret
);
1493 rtd
->codec
->ac97_registered
= 1;
1498 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1500 if (codec
->ac97_registered
) {
1501 soc_ac97_dev_unregister(codec
);
1502 codec
->ac97_registered
= 0;
1507 static int soc_check_aux_dev(struct snd_soc_card
*card
, int num
)
1509 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1510 struct snd_soc_codec
*codec
;
1512 /* find CODEC from registered CODECs*/
1513 list_for_each_entry(codec
, &codec_list
, list
) {
1514 if (!strcmp(codec
->name
, aux_dev
->codec_name
))
1518 dev_err(card
->dev
, "ASoC: %s not registered\n", aux_dev
->codec_name
);
1520 return -EPROBE_DEFER
;
1523 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1525 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1526 struct snd_soc_codec
*codec
;
1529 /* find CODEC from registered CODECs*/
1530 list_for_each_entry(codec
, &codec_list
, list
) {
1531 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1532 if (codec
->probed
) {
1534 "ASoC: codec already probed");
1541 /* codec not found */
1542 dev_err(card
->dev
, "ASoC: codec %s not found", aux_dev
->codec_name
);
1543 return -EPROBE_DEFER
;
1546 ret
= soc_probe_codec(card
, codec
);
1550 ret
= soc_post_component_init(card
, codec
, num
, 1);
1556 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1558 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1559 struct snd_soc_codec
*codec
= rtd
->codec
;
1561 /* unregister the rtd device */
1562 if (rtd
->dev_registered
) {
1563 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1564 device_unregister(rtd
->dev
);
1565 rtd
->dev_registered
= 0;
1568 if (codec
&& codec
->probed
)
1569 soc_remove_codec(codec
);
1572 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1573 enum snd_soc_compress_type compress_type
)
1577 if (codec
->cache_init
)
1580 /* override the compress_type if necessary */
1581 if (compress_type
&& codec
->compress_type
!= compress_type
)
1582 codec
->compress_type
= compress_type
;
1583 ret
= snd_soc_cache_init(codec
);
1585 dev_err(codec
->dev
, "ASoC: Failed to set cache compression"
1586 " type: %d\n", ret
);
1589 codec
->cache_init
= 1;
1593 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1595 struct snd_soc_codec
*codec
;
1596 struct snd_soc_codec_conf
*codec_conf
;
1597 enum snd_soc_compress_type compress_type
;
1598 struct snd_soc_dai_link
*dai_link
;
1599 int ret
, i
, order
, dai_fmt
;
1601 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1604 for (i
= 0; i
< card
->num_links
; i
++) {
1605 ret
= soc_bind_dai_link(card
, i
);
1610 /* check aux_devs too */
1611 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1612 ret
= soc_check_aux_dev(card
, i
);
1617 /* initialize the register cache for each available codec */
1618 list_for_each_entry(codec
, &codec_list
, list
) {
1619 if (codec
->cache_init
)
1621 /* by default we don't override the compress_type */
1623 /* check to see if we need to override the compress_type */
1624 for (i
= 0; i
< card
->num_configs
; ++i
) {
1625 codec_conf
= &card
->codec_conf
[i
];
1626 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1627 compress_type
= codec_conf
->compress_type
;
1628 if (compress_type
&& compress_type
1629 != codec
->compress_type
)
1633 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1638 /* card bind complete so register a sound card */
1639 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1640 card
->owner
, 0, &card
->snd_card
);
1642 dev_err(card
->dev
, "ASoC: can't create sound card for"
1643 " card %s: %d\n", card
->name
, ret
);
1646 card
->snd_card
->dev
= card
->dev
;
1648 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1649 card
->dapm
.dev
= card
->dev
;
1650 card
->dapm
.card
= card
;
1651 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1653 #ifdef CONFIG_DEBUG_FS
1654 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1657 #ifdef CONFIG_PM_SLEEP
1658 /* deferred resume work */
1659 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1662 if (card
->dapm_widgets
)
1663 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1664 card
->num_dapm_widgets
);
1666 /* initialise the sound card only once */
1668 ret
= card
->probe(card
);
1670 goto card_probe_error
;
1673 /* probe all components used by DAI links on this card */
1674 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1676 for (i
= 0; i
< card
->num_links
; i
++) {
1677 ret
= soc_probe_link_components(card
, i
, order
);
1680 "ASoC: failed to instantiate card %d\n",
1687 /* probe all DAI links on this card */
1688 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1690 for (i
= 0; i
< card
->num_links
; i
++) {
1691 ret
= soc_probe_link_dais(card
, i
, order
);
1694 "ASoC: failed to instantiate card %d\n",
1701 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1702 ret
= soc_probe_aux_dev(card
, i
);
1705 "ASoC: failed to add auxiliary devices %d\n",
1707 goto probe_aux_dev_err
;
1711 snd_soc_dapm_link_dai_widgets(card
);
1714 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1716 if (card
->dapm_routes
)
1717 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1718 card
->num_dapm_routes
);
1720 snd_soc_dapm_new_widgets(&card
->dapm
);
1722 for (i
= 0; i
< card
->num_links
; i
++) {
1723 dai_link
= &card
->dai_link
[i
];
1724 dai_fmt
= dai_link
->dai_fmt
;
1727 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1729 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1730 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1731 "ASoC: Failed to set DAI format: %d\n",
1735 /* If this is a regular CPU link there will be a platform */
1737 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1738 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1740 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1741 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1742 "ASoC: Failed to set DAI format: %d\n",
1744 } else if (dai_fmt
) {
1745 /* Flip the polarity for the "CPU" end */
1746 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1747 switch (dai_link
->dai_fmt
&
1748 SND_SOC_DAIFMT_MASTER_MASK
) {
1749 case SND_SOC_DAIFMT_CBM_CFM
:
1750 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1752 case SND_SOC_DAIFMT_CBM_CFS
:
1753 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1755 case SND_SOC_DAIFMT_CBS_CFM
:
1756 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1758 case SND_SOC_DAIFMT_CBS_CFS
:
1759 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1763 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1765 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1766 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1767 "ASoC: Failed to set DAI format: %d\n",
1772 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1774 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1775 "%s", card
->long_name
? card
->long_name
: card
->name
);
1776 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1777 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1778 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1779 switch (card
->snd_card
->driver
[i
]) {
1785 if (!isalnum(card
->snd_card
->driver
[i
]))
1786 card
->snd_card
->driver
[i
] = '_';
1791 if (card
->late_probe
) {
1792 ret
= card
->late_probe(card
);
1794 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1796 goto probe_aux_dev_err
;
1800 snd_soc_dapm_new_widgets(&card
->dapm
);
1802 if (card
->fully_routed
)
1803 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1804 snd_soc_dapm_auto_nc_codec_pins(codec
);
1806 ret
= snd_card_register(card
->snd_card
);
1808 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1810 goto probe_aux_dev_err
;
1813 #ifdef CONFIG_SND_SOC_AC97_BUS
1814 /* register any AC97 codecs */
1815 for (i
= 0; i
< card
->num_rtd
; i
++) {
1816 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1818 dev_err(card
->dev
, "ASoC: failed to register AC97:"
1821 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1822 goto probe_aux_dev_err
;
1827 card
->instantiated
= 1;
1828 snd_soc_dapm_sync(&card
->dapm
);
1829 mutex_unlock(&card
->mutex
);
1834 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1835 soc_remove_aux_dev(card
, i
);
1838 soc_remove_dai_links(card
);
1844 snd_card_free(card
->snd_card
);
1847 mutex_unlock(&card
->mutex
);
1852 /* probes a new socdev */
1853 static int soc_probe(struct platform_device
*pdev
)
1855 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1858 * no card, so machine driver should be registering card
1859 * we should not be here in that case so ret error
1864 dev_warn(&pdev
->dev
,
1865 "ASoC: machine %s should use snd_soc_register_card()\n",
1868 /* Bodge while we unpick instantiation */
1869 card
->dev
= &pdev
->dev
;
1871 return snd_soc_register_card(card
);
1874 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1878 /* make sure any delayed work runs */
1879 for (i
= 0; i
< card
->num_rtd
; i
++) {
1880 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1881 flush_delayed_work(&rtd
->delayed_work
);
1884 /* remove auxiliary devices */
1885 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1886 soc_remove_aux_dev(card
, i
);
1888 /* remove and free each DAI */
1889 soc_remove_dai_links(card
);
1891 soc_cleanup_card_debugfs(card
);
1893 /* remove the card */
1897 snd_soc_dapm_free(&card
->dapm
);
1899 snd_card_free(card
->snd_card
);
1904 /* removes a socdev */
1905 static int soc_remove(struct platform_device
*pdev
)
1907 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1909 snd_soc_unregister_card(card
);
1913 int snd_soc_poweroff(struct device
*dev
)
1915 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1918 if (!card
->instantiated
)
1921 /* Flush out pmdown_time work - we actually do want to run it
1922 * now, we're shutting down so no imminent restart. */
1923 for (i
= 0; i
< card
->num_rtd
; i
++) {
1924 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1925 flush_delayed_work(&rtd
->delayed_work
);
1928 snd_soc_dapm_shutdown(card
);
1932 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1934 const struct dev_pm_ops snd_soc_pm_ops
= {
1935 .suspend
= snd_soc_suspend
,
1936 .resume
= snd_soc_resume
,
1937 .freeze
= snd_soc_suspend
,
1938 .thaw
= snd_soc_resume
,
1939 .poweroff
= snd_soc_poweroff
,
1940 .restore
= snd_soc_resume
,
1942 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1944 /* ASoC platform driver */
1945 static struct platform_driver soc_driver
= {
1947 .name
= "soc-audio",
1948 .owner
= THIS_MODULE
,
1949 .pm
= &snd_soc_pm_ops
,
1952 .remove
= soc_remove
,
1956 * snd_soc_codec_volatile_register: Report if a register is volatile.
1958 * @codec: CODEC to query.
1959 * @reg: Register to query.
1961 * Boolean function indiciating if a CODEC register is volatile.
1963 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1966 if (codec
->volatile_register
)
1967 return codec
->volatile_register(codec
, reg
);
1971 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1974 * snd_soc_codec_readable_register: Report if a register is readable.
1976 * @codec: CODEC to query.
1977 * @reg: Register to query.
1979 * Boolean function indicating if a CODEC register is readable.
1981 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1984 if (codec
->readable_register
)
1985 return codec
->readable_register(codec
, reg
);
1989 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1992 * snd_soc_codec_writable_register: Report if a register is writable.
1994 * @codec: CODEC to query.
1995 * @reg: Register to query.
1997 * Boolean function indicating if a CODEC register is writable.
1999 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
2002 if (codec
->writable_register
)
2003 return codec
->writable_register(codec
, reg
);
2007 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
2009 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
2014 if (!platform
->driver
->read
) {
2015 dev_err(platform
->dev
, "ASoC: platform has no read back\n");
2019 ret
= platform
->driver
->read(platform
, reg
);
2020 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
2021 trace_snd_soc_preg_read(platform
, reg
, ret
);
2025 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
2027 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
2028 unsigned int reg
, unsigned int val
)
2030 if (!platform
->driver
->write
) {
2031 dev_err(platform
->dev
, "ASoC: platform has no write back\n");
2035 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
2036 trace_snd_soc_preg_write(platform
, reg
, val
);
2037 return platform
->driver
->write(platform
, reg
, val
);
2039 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
2042 * snd_soc_new_ac97_codec - initailise AC97 device
2043 * @codec: audio codec
2044 * @ops: AC97 bus operations
2045 * @num: AC97 codec number
2047 * Initialises AC97 codec resources for use by ad-hoc devices only.
2049 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2050 struct snd_ac97_bus_ops
*ops
, int num
)
2052 mutex_lock(&codec
->mutex
);
2054 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2055 if (codec
->ac97
== NULL
) {
2056 mutex_unlock(&codec
->mutex
);
2060 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2061 if (codec
->ac97
->bus
== NULL
) {
2064 mutex_unlock(&codec
->mutex
);
2068 codec
->ac97
->bus
->ops
= ops
;
2069 codec
->ac97
->num
= num
;
2072 * Mark the AC97 device to be created by us. This way we ensure that the
2073 * device will be registered with the device subsystem later on.
2075 codec
->ac97_created
= 1;
2077 mutex_unlock(&codec
->mutex
);
2080 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2083 * snd_soc_free_ac97_codec - free AC97 codec device
2084 * @codec: audio codec
2086 * Frees AC97 codec device resources.
2088 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2090 mutex_lock(&codec
->mutex
);
2091 #ifdef CONFIG_SND_SOC_AC97_BUS
2092 soc_unregister_ac97_dai_link(codec
);
2094 kfree(codec
->ac97
->bus
);
2097 codec
->ac97_created
= 0;
2098 mutex_unlock(&codec
->mutex
);
2100 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2102 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
2107 ret
= codec
->read(codec
, reg
);
2108 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
2109 trace_snd_soc_reg_read(codec
, reg
, ret
);
2116 EXPORT_SYMBOL_GPL(snd_soc_read
);
2118 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
2119 unsigned int reg
, unsigned int val
)
2122 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
2123 trace_snd_soc_reg_write(codec
, reg
, val
);
2124 return codec
->write(codec
, reg
, val
);
2129 EXPORT_SYMBOL_GPL(snd_soc_write
);
2131 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
2132 unsigned int reg
, const void *data
, size_t len
)
2134 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
2136 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
2139 * snd_soc_update_bits - update codec register bits
2140 * @codec: audio codec
2141 * @reg: codec register
2142 * @mask: register mask
2145 * Writes new register value.
2147 * Returns 1 for change, 0 for no change, or negative error code.
2149 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2150 unsigned int mask
, unsigned int value
)
2153 unsigned int old
, new;
2156 if (codec
->using_regmap
) {
2157 ret
= regmap_update_bits_check(codec
->control_data
, reg
,
2158 mask
, value
, &change
);
2160 ret
= snd_soc_read(codec
, reg
);
2165 new = (old
& ~mask
) | (value
& mask
);
2166 change
= old
!= new;
2168 ret
= snd_soc_write(codec
, reg
, new);
2176 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
2179 * snd_soc_update_bits_locked - update codec register bits
2180 * @codec: audio codec
2181 * @reg: codec register
2182 * @mask: register mask
2185 * Writes new register value, and takes the codec mutex.
2187 * Returns 1 for change else 0.
2189 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
2190 unsigned short reg
, unsigned int mask
,
2195 mutex_lock(&codec
->mutex
);
2196 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
2197 mutex_unlock(&codec
->mutex
);
2201 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
2204 * snd_soc_test_bits - test register for change
2205 * @codec: audio codec
2206 * @reg: codec register
2207 * @mask: register mask
2210 * Tests a register with a new value and checks if the new value is
2211 * different from the old value.
2213 * Returns 1 for change else 0.
2215 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
2216 unsigned int mask
, unsigned int value
)
2219 unsigned int old
, new;
2221 old
= snd_soc_read(codec
, reg
);
2222 new = (old
& ~mask
) | value
;
2223 change
= old
!= new;
2227 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
2230 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2231 * @substream: the pcm substream
2232 * @hw: the hardware parameters
2234 * Sets the substream runtime hardware parameters.
2236 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
2237 const struct snd_pcm_hardware
*hw
)
2239 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
2240 runtime
->hw
.info
= hw
->info
;
2241 runtime
->hw
.formats
= hw
->formats
;
2242 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
2243 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
2244 runtime
->hw
.periods_min
= hw
->periods_min
;
2245 runtime
->hw
.periods_max
= hw
->periods_max
;
2246 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
2247 runtime
->hw
.fifo_size
= hw
->fifo_size
;
2250 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
2253 * snd_soc_cnew - create new control
2254 * @_template: control template
2255 * @data: control private data
2256 * @long_name: control long name
2257 * @prefix: control name prefix
2259 * Create a new mixer control from a template control.
2261 * Returns 0 for success, else error.
2263 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2264 void *data
, const char *long_name
,
2267 struct snd_kcontrol_new
template;
2268 struct snd_kcontrol
*kcontrol
;
2272 memcpy(&template, _template
, sizeof(template));
2276 long_name
= template.name
;
2279 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
2280 name
= kmalloc(name_len
, GFP_KERNEL
);
2284 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
2286 template.name
= name
;
2288 template.name
= long_name
;
2291 kcontrol
= snd_ctl_new1(&template, data
);
2297 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2299 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2300 const struct snd_kcontrol_new
*controls
, int num_controls
,
2301 const char *prefix
, void *data
)
2305 for (i
= 0; i
< num_controls
; i
++) {
2306 const struct snd_kcontrol_new
*control
= &controls
[i
];
2307 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2308 control
->name
, prefix
));
2310 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2311 control
->name
, err
);
2320 * snd_soc_add_codec_controls - add an array of controls to a codec.
2321 * Convenience function to add a list of controls. Many codecs were
2322 * duplicating this code.
2324 * @codec: codec to add controls to
2325 * @controls: array of controls to add
2326 * @num_controls: number of elements in the array
2328 * Return 0 for success, else error.
2330 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2331 const struct snd_kcontrol_new
*controls
, int num_controls
)
2333 struct snd_card
*card
= codec
->card
->snd_card
;
2335 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2336 codec
->name_prefix
, codec
);
2338 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2341 * snd_soc_add_platform_controls - add an array of controls to a platform.
2342 * Convenience function to add a list of controls.
2344 * @platform: platform to add controls to
2345 * @controls: array of controls to add
2346 * @num_controls: number of elements in the array
2348 * Return 0 for success, else error.
2350 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2351 const struct snd_kcontrol_new
*controls
, int num_controls
)
2353 struct snd_card
*card
= platform
->card
->snd_card
;
2355 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2358 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2361 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2362 * Convenience function to add a list of controls.
2364 * @soc_card: SoC card to add controls to
2365 * @controls: array of controls to add
2366 * @num_controls: number of elements in the array
2368 * Return 0 for success, else error.
2370 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2371 const struct snd_kcontrol_new
*controls
, int num_controls
)
2373 struct snd_card
*card
= soc_card
->snd_card
;
2375 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2378 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2381 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2382 * Convienience function to add a list of controls.
2384 * @dai: DAI to add controls to
2385 * @controls: array of controls to add
2386 * @num_controls: number of elements in the array
2388 * Return 0 for success, else error.
2390 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2391 const struct snd_kcontrol_new
*controls
, int num_controls
)
2393 struct snd_card
*card
= dai
->card
->snd_card
;
2395 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2398 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2401 * snd_soc_info_enum_double - enumerated double mixer info callback
2402 * @kcontrol: mixer control
2403 * @uinfo: control element information
2405 * Callback to provide information about a double enumerated
2408 * Returns 0 for success.
2410 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2411 struct snd_ctl_elem_info
*uinfo
)
2413 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2415 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2416 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2417 uinfo
->value
.enumerated
.items
= e
->max
;
2419 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2420 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2421 strcpy(uinfo
->value
.enumerated
.name
,
2422 e
->texts
[uinfo
->value
.enumerated
.item
]);
2425 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2428 * snd_soc_get_enum_double - enumerated double mixer get callback
2429 * @kcontrol: mixer control
2430 * @ucontrol: control element information
2432 * Callback to get the value of a double enumerated mixer.
2434 * Returns 0 for success.
2436 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2437 struct snd_ctl_elem_value
*ucontrol
)
2439 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2440 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2443 val
= snd_soc_read(codec
, e
->reg
);
2444 ucontrol
->value
.enumerated
.item
[0]
2445 = (val
>> e
->shift_l
) & e
->mask
;
2446 if (e
->shift_l
!= e
->shift_r
)
2447 ucontrol
->value
.enumerated
.item
[1] =
2448 (val
>> e
->shift_r
) & e
->mask
;
2452 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2455 * snd_soc_put_enum_double - enumerated double mixer put callback
2456 * @kcontrol: mixer control
2457 * @ucontrol: control element information
2459 * Callback to set the value of a double enumerated mixer.
2461 * Returns 0 for success.
2463 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2464 struct snd_ctl_elem_value
*ucontrol
)
2466 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2467 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2471 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2473 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2474 mask
= e
->mask
<< e
->shift_l
;
2475 if (e
->shift_l
!= e
->shift_r
) {
2476 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2478 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2479 mask
|= e
->mask
<< e
->shift_r
;
2482 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2484 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2487 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2488 * @kcontrol: mixer control
2489 * @ucontrol: control element information
2491 * Callback to get the value of a double semi enumerated mixer.
2493 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2494 * used for handling bitfield coded enumeration for example.
2496 * Returns 0 for success.
2498 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2499 struct snd_ctl_elem_value
*ucontrol
)
2501 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2502 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2503 unsigned int reg_val
, val
, mux
;
2505 reg_val
= snd_soc_read(codec
, e
->reg
);
2506 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2507 for (mux
= 0; mux
< e
->max
; mux
++) {
2508 if (val
== e
->values
[mux
])
2511 ucontrol
->value
.enumerated
.item
[0] = mux
;
2512 if (e
->shift_l
!= e
->shift_r
) {
2513 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2514 for (mux
= 0; mux
< e
->max
; mux
++) {
2515 if (val
== e
->values
[mux
])
2518 ucontrol
->value
.enumerated
.item
[1] = mux
;
2523 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2526 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2527 * @kcontrol: mixer control
2528 * @ucontrol: control element information
2530 * Callback to set the value of a double semi enumerated mixer.
2532 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2533 * used for handling bitfield coded enumeration for example.
2535 * Returns 0 for success.
2537 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2538 struct snd_ctl_elem_value
*ucontrol
)
2540 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2541 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2545 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2547 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2548 mask
= e
->mask
<< e
->shift_l
;
2549 if (e
->shift_l
!= e
->shift_r
) {
2550 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2552 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2553 mask
|= e
->mask
<< e
->shift_r
;
2556 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2558 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2561 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2562 * @kcontrol: mixer control
2563 * @uinfo: control element information
2565 * Callback to provide information about an external enumerated
2568 * Returns 0 for success.
2570 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2571 struct snd_ctl_elem_info
*uinfo
)
2573 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2575 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2577 uinfo
->value
.enumerated
.items
= e
->max
;
2579 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2580 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2581 strcpy(uinfo
->value
.enumerated
.name
,
2582 e
->texts
[uinfo
->value
.enumerated
.item
]);
2585 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2588 * snd_soc_info_volsw_ext - external single mixer info callback
2589 * @kcontrol: mixer control
2590 * @uinfo: control element information
2592 * Callback to provide information about a single external mixer control.
2594 * Returns 0 for success.
2596 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2597 struct snd_ctl_elem_info
*uinfo
)
2599 int max
= kcontrol
->private_value
;
2601 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2602 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2604 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2607 uinfo
->value
.integer
.min
= 0;
2608 uinfo
->value
.integer
.max
= max
;
2611 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2614 * snd_soc_info_volsw - single mixer info callback
2615 * @kcontrol: mixer control
2616 * @uinfo: control element information
2618 * Callback to provide information about a single mixer control, or a double
2619 * mixer control that spans 2 registers.
2621 * Returns 0 for success.
2623 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2624 struct snd_ctl_elem_info
*uinfo
)
2626 struct soc_mixer_control
*mc
=
2627 (struct soc_mixer_control
*)kcontrol
->private_value
;
2630 if (!mc
->platform_max
)
2631 mc
->platform_max
= mc
->max
;
2632 platform_max
= mc
->platform_max
;
2634 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2635 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2637 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2639 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2640 uinfo
->value
.integer
.min
= 0;
2641 uinfo
->value
.integer
.max
= platform_max
;
2644 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2647 * snd_soc_get_volsw - single mixer get callback
2648 * @kcontrol: mixer control
2649 * @ucontrol: control element information
2651 * Callback to get the value of a single mixer control, or a double mixer
2652 * control that spans 2 registers.
2654 * Returns 0 for success.
2656 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2657 struct snd_ctl_elem_value
*ucontrol
)
2659 struct soc_mixer_control
*mc
=
2660 (struct soc_mixer_control
*)kcontrol
->private_value
;
2661 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2662 unsigned int reg
= mc
->reg
;
2663 unsigned int reg2
= mc
->rreg
;
2664 unsigned int shift
= mc
->shift
;
2665 unsigned int rshift
= mc
->rshift
;
2667 unsigned int mask
= (1 << fls(max
)) - 1;
2668 unsigned int invert
= mc
->invert
;
2670 ucontrol
->value
.integer
.value
[0] =
2671 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2673 ucontrol
->value
.integer
.value
[0] =
2674 max
- ucontrol
->value
.integer
.value
[0];
2676 if (snd_soc_volsw_is_stereo(mc
)) {
2678 ucontrol
->value
.integer
.value
[1] =
2679 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2681 ucontrol
->value
.integer
.value
[1] =
2682 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2684 ucontrol
->value
.integer
.value
[1] =
2685 max
- ucontrol
->value
.integer
.value
[1];
2690 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2693 * snd_soc_put_volsw - single mixer put callback
2694 * @kcontrol: mixer control
2695 * @ucontrol: control element information
2697 * Callback to set the value of a single mixer control, or a double mixer
2698 * control that spans 2 registers.
2700 * Returns 0 for success.
2702 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2703 struct snd_ctl_elem_value
*ucontrol
)
2705 struct soc_mixer_control
*mc
=
2706 (struct soc_mixer_control
*)kcontrol
->private_value
;
2707 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2708 unsigned int reg
= mc
->reg
;
2709 unsigned int reg2
= mc
->rreg
;
2710 unsigned int shift
= mc
->shift
;
2711 unsigned int rshift
= mc
->rshift
;
2713 unsigned int mask
= (1 << fls(max
)) - 1;
2714 unsigned int invert
= mc
->invert
;
2717 unsigned int val2
= 0;
2718 unsigned int val
, val_mask
;
2720 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2723 val_mask
= mask
<< shift
;
2725 if (snd_soc_volsw_is_stereo(mc
)) {
2726 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2730 val_mask
|= mask
<< rshift
;
2731 val
|= val2
<< rshift
;
2733 val2
= val2
<< shift
;
2737 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2742 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2746 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2749 * snd_soc_get_volsw_sx - single mixer get callback
2750 * @kcontrol: mixer control
2751 * @ucontrol: control element information
2753 * Callback to get the value of a single mixer control, or a double mixer
2754 * control that spans 2 registers.
2756 * Returns 0 for success.
2758 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2759 struct snd_ctl_elem_value
*ucontrol
)
2761 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2762 struct soc_mixer_control
*mc
=
2763 (struct soc_mixer_control
*)kcontrol
->private_value
;
2765 unsigned int reg
= mc
->reg
;
2766 unsigned int reg2
= mc
->rreg
;
2767 unsigned int shift
= mc
->shift
;
2768 unsigned int rshift
= mc
->rshift
;
2771 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2773 ucontrol
->value
.integer
.value
[0] =
2774 ((snd_soc_read(codec
, reg
) >> shift
) - min
) & mask
;
2776 if (snd_soc_volsw_is_stereo(mc
))
2777 ucontrol
->value
.integer
.value
[1] =
2778 ((snd_soc_read(codec
, reg2
) >> rshift
) - min
) & mask
;
2782 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2785 * snd_soc_put_volsw_sx - double mixer set callback
2786 * @kcontrol: mixer control
2787 * @uinfo: control element information
2789 * Callback to set the value of a double mixer control that spans 2 registers.
2791 * Returns 0 for success.
2793 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2794 struct snd_ctl_elem_value
*ucontrol
)
2796 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2797 struct soc_mixer_control
*mc
=
2798 (struct soc_mixer_control
*)kcontrol
->private_value
;
2800 unsigned int reg
= mc
->reg
;
2801 unsigned int reg2
= mc
->rreg
;
2802 unsigned int shift
= mc
->shift
;
2803 unsigned int rshift
= mc
->rshift
;
2806 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2808 unsigned short val
, val_mask
, val2
= 0;
2810 val_mask
= mask
<< shift
;
2811 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2814 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2818 if (snd_soc_volsw_is_stereo(mc
)) {
2819 val_mask
= mask
<< rshift
;
2820 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2821 val2
= val2
<< rshift
;
2823 if (snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
))
2828 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2831 * snd_soc_info_volsw_s8 - signed mixer info callback
2832 * @kcontrol: mixer control
2833 * @uinfo: control element information
2835 * Callback to provide information about a signed mixer control.
2837 * Returns 0 for success.
2839 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2840 struct snd_ctl_elem_info
*uinfo
)
2842 struct soc_mixer_control
*mc
=
2843 (struct soc_mixer_control
*)kcontrol
->private_value
;
2847 if (!mc
->platform_max
)
2848 mc
->platform_max
= mc
->max
;
2849 platform_max
= mc
->platform_max
;
2851 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2853 uinfo
->value
.integer
.min
= 0;
2854 uinfo
->value
.integer
.max
= platform_max
- min
;
2857 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2860 * snd_soc_get_volsw_s8 - signed mixer get callback
2861 * @kcontrol: mixer control
2862 * @ucontrol: control element information
2864 * Callback to get the value of a signed mixer control.
2866 * Returns 0 for success.
2868 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2869 struct snd_ctl_elem_value
*ucontrol
)
2871 struct soc_mixer_control
*mc
=
2872 (struct soc_mixer_control
*)kcontrol
->private_value
;
2873 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2874 unsigned int reg
= mc
->reg
;
2876 int val
= snd_soc_read(codec
, reg
);
2878 ucontrol
->value
.integer
.value
[0] =
2879 ((signed char)(val
& 0xff))-min
;
2880 ucontrol
->value
.integer
.value
[1] =
2881 ((signed char)((val
>> 8) & 0xff))-min
;
2884 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2887 * snd_soc_put_volsw_sgn - signed mixer put callback
2888 * @kcontrol: mixer control
2889 * @ucontrol: control element information
2891 * Callback to set the value of a signed mixer control.
2893 * Returns 0 for success.
2895 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2896 struct snd_ctl_elem_value
*ucontrol
)
2898 struct soc_mixer_control
*mc
=
2899 (struct soc_mixer_control
*)kcontrol
->private_value
;
2900 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2901 unsigned int reg
= mc
->reg
;
2905 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2906 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2908 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2910 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2913 * snd_soc_info_volsw_range - single mixer info callback with range.
2914 * @kcontrol: mixer control
2915 * @uinfo: control element information
2917 * Callback to provide information, within a range, about a single
2920 * returns 0 for success.
2922 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
2923 struct snd_ctl_elem_info
*uinfo
)
2925 struct soc_mixer_control
*mc
=
2926 (struct soc_mixer_control
*)kcontrol
->private_value
;
2930 if (!mc
->platform_max
)
2931 mc
->platform_max
= mc
->max
;
2932 platform_max
= mc
->platform_max
;
2934 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2935 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2936 uinfo
->value
.integer
.min
= 0;
2937 uinfo
->value
.integer
.max
= platform_max
- min
;
2941 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
2944 * snd_soc_put_volsw_range - single mixer put value callback with range.
2945 * @kcontrol: mixer control
2946 * @ucontrol: control element information
2948 * Callback to set the value, within a range, for a single mixer control.
2950 * Returns 0 for success.
2952 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
2953 struct snd_ctl_elem_value
*ucontrol
)
2955 struct soc_mixer_control
*mc
=
2956 (struct soc_mixer_control
*)kcontrol
->private_value
;
2957 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2958 unsigned int reg
= mc
->reg
;
2959 unsigned int rreg
= mc
->rreg
;
2960 unsigned int shift
= mc
->shift
;
2963 unsigned int mask
= (1 << fls(max
)) - 1;
2964 unsigned int invert
= mc
->invert
;
2965 unsigned int val
, val_mask
;
2968 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
2971 val_mask
= mask
<< shift
;
2974 ret
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2978 if (snd_soc_volsw_is_stereo(mc
)) {
2979 val
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
2982 val_mask
= mask
<< shift
;
2985 ret
= snd_soc_update_bits_locked(codec
, rreg
, val_mask
, val
);
2990 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
2993 * snd_soc_get_volsw_range - single mixer get callback with range
2994 * @kcontrol: mixer control
2995 * @ucontrol: control element information
2997 * Callback to get the value, within a range, of a single mixer control.
2999 * Returns 0 for success.
3001 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
3002 struct snd_ctl_elem_value
*ucontrol
)
3004 struct soc_mixer_control
*mc
=
3005 (struct soc_mixer_control
*)kcontrol
->private_value
;
3006 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3007 unsigned int reg
= mc
->reg
;
3008 unsigned int rreg
= mc
->rreg
;
3009 unsigned int shift
= mc
->shift
;
3012 unsigned int mask
= (1 << fls(max
)) - 1;
3013 unsigned int invert
= mc
->invert
;
3015 ucontrol
->value
.integer
.value
[0] =
3016 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
3018 ucontrol
->value
.integer
.value
[0] =
3019 max
- ucontrol
->value
.integer
.value
[0];
3020 ucontrol
->value
.integer
.value
[0] =
3021 ucontrol
->value
.integer
.value
[0] - min
;
3023 if (snd_soc_volsw_is_stereo(mc
)) {
3024 ucontrol
->value
.integer
.value
[1] =
3025 (snd_soc_read(codec
, rreg
) >> shift
) & mask
;
3027 ucontrol
->value
.integer
.value
[1] =
3028 max
- ucontrol
->value
.integer
.value
[1];
3029 ucontrol
->value
.integer
.value
[1] =
3030 ucontrol
->value
.integer
.value
[1] - min
;
3035 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
3038 * snd_soc_limit_volume - Set new limit to an existing volume control.
3040 * @codec: where to look for the control
3041 * @name: Name of the control
3042 * @max: new maximum limit
3044 * Return 0 for success, else error.
3046 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3047 const char *name
, int max
)
3049 struct snd_card
*card
= codec
->card
->snd_card
;
3050 struct snd_kcontrol
*kctl
;
3051 struct soc_mixer_control
*mc
;
3055 /* Sanity check for name and max */
3056 if (unlikely(!name
|| max
<= 0))
3059 list_for_each_entry(kctl
, &card
->controls
, list
) {
3060 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3066 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3067 if (max
<= mc
->max
) {
3068 mc
->platform_max
= max
;
3074 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3076 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
3077 struct snd_ctl_elem_info
*uinfo
)
3079 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3080 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3082 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
3083 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
3087 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
3089 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
3090 struct snd_ctl_elem_value
*ucontrol
)
3092 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3093 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3096 if (codec
->using_regmap
)
3097 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
3098 ucontrol
->value
.bytes
.data
,
3099 params
->num_regs
* codec
->val_bytes
);
3103 /* Hide any masked bytes to ensure consistent data reporting */
3104 if (ret
== 0 && params
->mask
) {
3105 switch (codec
->val_bytes
) {
3107 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
3110 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
3114 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
3124 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
3126 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
3127 struct snd_ctl_elem_value
*ucontrol
)
3129 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3130 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3135 if (!codec
->using_regmap
)
3138 len
= params
->num_regs
* codec
->val_bytes
;
3140 data
= kmemdup(ucontrol
->value
.bytes
.data
, len
, GFP_KERNEL
| GFP_DMA
);
3145 * If we've got a mask then we need to preserve the register
3146 * bits. We shouldn't modify the incoming data so take a
3150 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
3154 val
&= params
->mask
;
3156 switch (codec
->val_bytes
) {
3158 ((u8
*)data
)[0] &= ~params
->mask
;
3159 ((u8
*)data
)[0] |= val
;
3162 ((u16
*)data
)[0] &= cpu_to_be16(~params
->mask
);
3163 ((u16
*)data
)[0] |= cpu_to_be16(val
);
3166 ((u32
*)data
)[0] &= cpu_to_be32(~params
->mask
);
3167 ((u32
*)data
)[0] |= cpu_to_be32(val
);
3175 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
3183 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
3186 * snd_soc_info_xr_sx - signed multi register info callback
3187 * @kcontrol: mreg control
3188 * @uinfo: control element information
3190 * Callback to provide information of a control that can
3191 * span multiple codec registers which together
3192 * forms a single signed value in a MSB/LSB manner.
3194 * Returns 0 for success.
3196 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
3197 struct snd_ctl_elem_info
*uinfo
)
3199 struct soc_mreg_control
*mc
=
3200 (struct soc_mreg_control
*)kcontrol
->private_value
;
3201 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3203 uinfo
->value
.integer
.min
= mc
->min
;
3204 uinfo
->value
.integer
.max
= mc
->max
;
3208 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
3211 * snd_soc_get_xr_sx - signed multi register get callback
3212 * @kcontrol: mreg control
3213 * @ucontrol: control element information
3215 * Callback to get the value of a control that can span
3216 * multiple codec registers which together forms a single
3217 * signed value in a MSB/LSB manner. The control supports
3218 * specifying total no of bits used to allow for bitfields
3219 * across the multiple codec registers.
3221 * Returns 0 for success.
3223 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
3224 struct snd_ctl_elem_value
*ucontrol
)
3226 struct soc_mreg_control
*mc
=
3227 (struct soc_mreg_control
*)kcontrol
->private_value
;
3228 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3229 unsigned int regbase
= mc
->regbase
;
3230 unsigned int regcount
= mc
->regcount
;
3231 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3232 unsigned int regwmask
= (1<<regwshift
)-1;
3233 unsigned int invert
= mc
->invert
;
3234 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3238 unsigned long regval
;
3241 for (i
= 0; i
< regcount
; i
++) {
3242 regval
= snd_soc_read(codec
, regbase
+i
) & regwmask
;
3243 val
|= regval
<< (regwshift
*(regcount
-i
-1));
3246 if (min
< 0 && val
> max
)
3250 ucontrol
->value
.integer
.value
[0] = val
;
3254 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3257 * snd_soc_put_xr_sx - signed multi register get callback
3258 * @kcontrol: mreg control
3259 * @ucontrol: control element information
3261 * Callback to set the value of a control that can span
3262 * multiple codec registers which together forms a single
3263 * signed value in a MSB/LSB manner. The control supports
3264 * specifying total no of bits used to allow for bitfields
3265 * across the multiple codec registers.
3267 * Returns 0 for success.
3269 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3270 struct snd_ctl_elem_value
*ucontrol
)
3272 struct soc_mreg_control
*mc
=
3273 (struct soc_mreg_control
*)kcontrol
->private_value
;
3274 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3275 unsigned int regbase
= mc
->regbase
;
3276 unsigned int regcount
= mc
->regcount
;
3277 unsigned int regwshift
= codec
->driver
->reg_word_size
* BITS_PER_BYTE
;
3278 unsigned int regwmask
= (1<<regwshift
)-1;
3279 unsigned int invert
= mc
->invert
;
3280 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3282 long val
= ucontrol
->value
.integer
.value
[0];
3283 unsigned int i
, regval
, regmask
;
3289 for (i
= 0; i
< regcount
; i
++) {
3290 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3291 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3292 err
= snd_soc_update_bits_locked(codec
, regbase
+i
,
3300 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3303 * snd_soc_get_strobe - strobe get callback
3304 * @kcontrol: mixer control
3305 * @ucontrol: control element information
3307 * Callback get the value of a strobe mixer control.
3309 * Returns 0 for success.
3311 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3312 struct snd_ctl_elem_value
*ucontrol
)
3314 struct soc_mixer_control
*mc
=
3315 (struct soc_mixer_control
*)kcontrol
->private_value
;
3316 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3317 unsigned int reg
= mc
->reg
;
3318 unsigned int shift
= mc
->shift
;
3319 unsigned int mask
= 1 << shift
;
3320 unsigned int invert
= mc
->invert
!= 0;
3321 unsigned int val
= snd_soc_read(codec
, reg
) & mask
;
3323 if (shift
!= 0 && val
!= 0)
3325 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3329 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3332 * snd_soc_put_strobe - strobe put callback
3333 * @kcontrol: mixer control
3334 * @ucontrol: control element information
3336 * Callback strobe a register bit to high then low (or the inverse)
3337 * in one pass of a single mixer enum control.
3339 * Returns 1 for success.
3341 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3342 struct snd_ctl_elem_value
*ucontrol
)
3344 struct soc_mixer_control
*mc
=
3345 (struct soc_mixer_control
*)kcontrol
->private_value
;
3346 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3347 unsigned int reg
= mc
->reg
;
3348 unsigned int shift
= mc
->shift
;
3349 unsigned int mask
= 1 << shift
;
3350 unsigned int invert
= mc
->invert
!= 0;
3351 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3352 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3353 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3356 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val1
);
3360 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val2
);
3363 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3366 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3368 * @clk_id: DAI specific clock ID
3369 * @freq: new clock frequency in Hz
3370 * @dir: new clock direction - input/output.
3372 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3374 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3375 unsigned int freq
, int dir
)
3377 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3378 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3379 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3380 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3385 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3388 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3390 * @clk_id: DAI specific clock ID
3391 * @source: Source for the clock
3392 * @freq: new clock frequency in Hz
3393 * @dir: new clock direction - input/output.
3395 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3397 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3398 int source
, unsigned int freq
, int dir
)
3400 if (codec
->driver
->set_sysclk
)
3401 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3406 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3409 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3411 * @div_id: DAI specific clock divider ID
3412 * @div: new clock divisor.
3414 * Configures the clock dividers. This is used to derive the best DAI bit and
3415 * frame clocks from the system or master clock. It's best to set the DAI bit
3416 * and frame clocks as low as possible to save system power.
3418 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3419 int div_id
, int div
)
3421 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3422 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3426 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3429 * snd_soc_dai_set_pll - configure DAI PLL.
3431 * @pll_id: DAI specific PLL ID
3432 * @source: DAI specific source for the PLL
3433 * @freq_in: PLL input clock frequency in Hz
3434 * @freq_out: requested PLL output clock frequency in Hz
3436 * Configures and enables PLL to generate output clock based on input clock.
3438 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3439 unsigned int freq_in
, unsigned int freq_out
)
3441 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3442 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3444 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3445 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3450 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3453 * snd_soc_codec_set_pll - configure codec PLL.
3455 * @pll_id: DAI specific PLL ID
3456 * @source: DAI specific source for the PLL
3457 * @freq_in: PLL input clock frequency in Hz
3458 * @freq_out: requested PLL output clock frequency in Hz
3460 * Configures and enables PLL to generate output clock based on input clock.
3462 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3463 unsigned int freq_in
, unsigned int freq_out
)
3465 if (codec
->driver
->set_pll
)
3466 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3471 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3474 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3476 * @fmt: SND_SOC_DAIFMT_ format value.
3478 * Configures the DAI hardware format and clocking.
3480 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3482 if (dai
->driver
== NULL
)
3484 if (dai
->driver
->ops
->set_fmt
== NULL
)
3486 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3488 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3491 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3493 * @tx_mask: bitmask representing active TX slots.
3494 * @rx_mask: bitmask representing active RX slots.
3495 * @slots: Number of slots in use.
3496 * @slot_width: Width in bits for each slot.
3498 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3501 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3502 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3504 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3505 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3510 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3513 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3515 * @tx_num: how many TX channels
3516 * @tx_slot: pointer to an array which imply the TX slot number channel
3518 * @rx_num: how many RX channels
3519 * @rx_slot: pointer to an array which imply the RX slot number channel
3522 * configure the relationship between channel number and TDM slot number.
3524 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3525 unsigned int tx_num
, unsigned int *tx_slot
,
3526 unsigned int rx_num
, unsigned int *rx_slot
)
3528 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3529 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3534 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3537 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3539 * @tristate: tristate enable
3541 * Tristates the DAI so that others can use it.
3543 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3545 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3546 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3550 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3553 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3555 * @mute: mute enable
3556 * @direction: stream to mute
3558 * Mutes the DAI DAC.
3560 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
3566 if (dai
->driver
->ops
->mute_stream
)
3567 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
3568 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
3569 dai
->driver
->ops
->digital_mute
)
3570 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3574 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3577 * snd_soc_register_card - Register a card with the ASoC core
3579 * @card: Card to register
3582 int snd_soc_register_card(struct snd_soc_card
*card
)
3586 if (!card
->name
|| !card
->dev
)
3589 for (i
= 0; i
< card
->num_links
; i
++) {
3590 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3593 * Codec must be specified by 1 of name or OF node,
3594 * not both or neither.
3596 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3597 dev_err(card
->dev
, "ASoC: Neither/both codec"
3598 " name/of_node are set for %s\n", link
->name
);
3601 /* Codec DAI name must be specified */
3602 if (!link
->codec_dai_name
) {
3603 dev_err(card
->dev
, "ASoC: codec_dai_name not"
3604 " set for %s\n", link
->name
);
3609 * Platform may be specified by either name or OF node, but
3610 * can be left unspecified, and a dummy platform will be used.
3612 if (link
->platform_name
&& link
->platform_of_node
) {
3613 dev_err(card
->dev
, "ASoC: Both platform name/of_node"
3614 " are set for %s\n", link
->name
);
3619 * CPU device may be specified by either name or OF node, but
3620 * can be left unspecified, and will be matched based on DAI
3623 if (link
->cpu_name
&& link
->cpu_of_node
) {
3624 dev_err(card
->dev
, "ASoC: Neither/both "
3625 "cpu name/of_node are set for %s\n",link
->name
);
3629 * At least one of CPU DAI name or CPU device name/node must be
3632 if (!link
->cpu_dai_name
&&
3633 !(link
->cpu_name
|| link
->cpu_of_node
)) {
3634 dev_err(card
->dev
, "ASoC: Neither cpu_dai_name nor "
3635 "cpu_name/of_node are set for %s\n", link
->name
);
3640 dev_set_drvdata(card
->dev
, card
);
3642 snd_soc_initialize_card_lists(card
);
3644 soc_init_card_debugfs(card
);
3646 card
->rtd
= devm_kzalloc(card
->dev
,
3647 sizeof(struct snd_soc_pcm_runtime
) *
3648 (card
->num_links
+ card
->num_aux_devs
),
3650 if (card
->rtd
== NULL
)
3653 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3655 for (i
= 0; i
< card
->num_links
; i
++)
3656 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3658 INIT_LIST_HEAD(&card
->list
);
3659 INIT_LIST_HEAD(&card
->dapm_dirty
);
3660 card
->instantiated
= 0;
3661 mutex_init(&card
->mutex
);
3662 mutex_init(&card
->dapm_mutex
);
3664 ret
= snd_soc_instantiate_card(card
);
3666 soc_cleanup_card_debugfs(card
);
3670 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3673 * snd_soc_unregister_card - Unregister a card with the ASoC core
3675 * @card: Card to unregister
3678 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3680 if (card
->instantiated
)
3681 soc_cleanup_card_resources(card
);
3682 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3686 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3689 * Simplify DAI link configuration by removing ".-1" from device names
3690 * and sanitizing names.
3692 static char *fmt_single_name(struct device
*dev
, int *id
)
3694 char *found
, name
[NAME_SIZE
];
3697 if (dev_name(dev
) == NULL
)
3700 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3702 /* are we a "%s.%d" name (platform and SPI components) */
3703 found
= strstr(name
, dev
->driver
->name
);
3706 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3708 /* discard ID from name if ID == -1 */
3710 found
[strlen(dev
->driver
->name
)] = '\0';
3714 /* I2C component devices are named "bus-addr" */
3715 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3716 char tmp
[NAME_SIZE
];
3718 /* create unique ID number from I2C addr and bus */
3719 *id
= ((id1
& 0xffff) << 16) + id2
;
3721 /* sanitize component name for DAI link creation */
3722 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3723 strlcpy(name
, tmp
, NAME_SIZE
);
3728 return kstrdup(name
, GFP_KERNEL
);
3732 * Simplify DAI link naming for single devices with multiple DAIs by removing
3733 * any ".-1" and using the DAI name (instead of device name).
3735 static inline char *fmt_multiple_name(struct device
*dev
,
3736 struct snd_soc_dai_driver
*dai_drv
)
3738 if (dai_drv
->name
== NULL
) {
3739 dev_err(dev
, "ASoC: error - multiple DAI %s registered with"
3740 " no name\n", dev_name(dev
));
3744 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3748 * snd_soc_register_dai - Register a DAI with the ASoC core
3750 * @dai: DAI to register
3752 static int snd_soc_register_dai(struct device
*dev
,
3753 struct snd_soc_dai_driver
*dai_drv
)
3755 struct snd_soc_codec
*codec
;
3756 struct snd_soc_dai
*dai
;
3758 dev_dbg(dev
, "ASoC: dai register %s\n", dev_name(dev
));
3760 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3764 /* create DAI component name */
3765 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3766 if (dai
->name
== NULL
) {
3772 dai
->driver
= dai_drv
;
3773 dai
->dapm
.dev
= dev
;
3774 if (!dai
->driver
->ops
)
3775 dai
->driver
->ops
= &null_dai_ops
;
3777 mutex_lock(&client_mutex
);
3779 list_for_each_entry(codec
, &codec_list
, list
) {
3780 if (codec
->dev
== dev
) {
3781 dev_dbg(dev
, "ASoC: Mapped DAI %s to CODEC %s\n",
3782 dai
->name
, codec
->name
);
3789 dai
->dapm
.idle_bias_off
= 1;
3791 list_add(&dai
->list
, &dai_list
);
3793 mutex_unlock(&client_mutex
);
3795 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3801 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3803 * @dai: DAI to unregister
3805 static void snd_soc_unregister_dai(struct device
*dev
)
3807 struct snd_soc_dai
*dai
;
3809 list_for_each_entry(dai
, &dai_list
, list
) {
3810 if (dev
== dai
->dev
)
3816 mutex_lock(&client_mutex
);
3817 list_del(&dai
->list
);
3818 mutex_unlock(&client_mutex
);
3820 dev_dbg(dev
, "ASoC: Unregistered DAI '%s'\n", dai
->name
);
3826 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3828 * @dai: Array of DAIs to register
3829 * @count: Number of DAIs
3831 static int snd_soc_register_dais(struct device
*dev
,
3832 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3834 struct snd_soc_codec
*codec
;
3835 struct snd_soc_dai
*dai
;
3838 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
3840 for (i
= 0; i
< count
; i
++) {
3842 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3848 /* create DAI component name */
3849 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3850 if (dai
->name
== NULL
) {
3857 dai
->driver
= &dai_drv
[i
];
3858 if (dai
->driver
->id
)
3859 dai
->id
= dai
->driver
->id
;
3862 dai
->dapm
.dev
= dev
;
3863 if (!dai
->driver
->ops
)
3864 dai
->driver
->ops
= &null_dai_ops
;
3866 mutex_lock(&client_mutex
);
3868 list_for_each_entry(codec
, &codec_list
, list
) {
3869 if (codec
->dev
== dev
) {
3870 dev_dbg(dev
, "ASoC: Mapped DAI %s to "
3871 "CODEC %s\n", dai
->name
, codec
->name
);
3878 dai
->dapm
.idle_bias_off
= 1;
3880 list_add(&dai
->list
, &dai_list
);
3882 mutex_unlock(&client_mutex
);
3884 dev_dbg(dai
->dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3890 for (i
--; i
>= 0; i
--)
3891 snd_soc_unregister_dai(dev
);
3897 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3899 * @dai: Array of DAIs to unregister
3900 * @count: Number of DAIs
3902 static void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3906 for (i
= 0; i
< count
; i
++)
3907 snd_soc_unregister_dai(dev
);
3911 * snd_soc_add_platform - Add a platform to the ASoC core
3912 * @dev: The parent device for the platform
3913 * @platform: The platform to add
3914 * @platform_driver: The driver for the platform
3916 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3917 const struct snd_soc_platform_driver
*platform_drv
)
3919 /* create platform component name */
3920 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3921 if (platform
->name
== NULL
) {
3926 platform
->dev
= dev
;
3927 platform
->driver
= platform_drv
;
3928 platform
->dapm
.dev
= dev
;
3929 platform
->dapm
.platform
= platform
;
3930 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3931 mutex_init(&platform
->mutex
);
3933 mutex_lock(&client_mutex
);
3934 list_add(&platform
->list
, &platform_list
);
3935 mutex_unlock(&client_mutex
);
3937 dev_dbg(dev
, "ASoC: Registered platform '%s'\n", platform
->name
);
3941 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3944 * snd_soc_register_platform - Register a platform with the ASoC core
3946 * @platform: platform to register
3948 int snd_soc_register_platform(struct device
*dev
,
3949 const struct snd_soc_platform_driver
*platform_drv
)
3951 struct snd_soc_platform
*platform
;
3954 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3956 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3957 if (platform
== NULL
)
3960 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3966 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3969 * snd_soc_remove_platform - Remove a platform from the ASoC core
3970 * @platform: the platform to remove
3972 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
3974 mutex_lock(&client_mutex
);
3975 list_del(&platform
->list
);
3976 mutex_unlock(&client_mutex
);
3978 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
3980 kfree(platform
->name
);
3982 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
3984 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
3986 struct snd_soc_platform
*platform
;
3988 list_for_each_entry(platform
, &platform_list
, list
) {
3989 if (dev
== platform
->dev
)
3995 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
3998 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4000 * @platform: platform to unregister
4002 void snd_soc_unregister_platform(struct device
*dev
)
4004 struct snd_soc_platform
*platform
;
4006 platform
= snd_soc_lookup_platform(dev
);
4010 snd_soc_remove_platform(platform
);
4013 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
4015 static u64 codec_format_map
[] = {
4016 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
4017 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
4018 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
4019 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
4020 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
4021 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
4022 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4023 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4024 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
4025 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
4026 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
4027 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
4028 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
4029 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
4030 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4031 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
4034 /* Fix up the DAI formats for endianness: codecs don't actually see
4035 * the endianness of the data but we're using the CPU format
4036 * definitions which do need to include endianness so we ensure that
4037 * codec DAIs always have both big and little endian variants set.
4039 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
4043 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
4044 if (stream
->formats
& codec_format_map
[i
])
4045 stream
->formats
|= codec_format_map
[i
];
4049 * snd_soc_register_codec - Register a codec with the ASoC core
4051 * @codec: codec to register
4053 int snd_soc_register_codec(struct device
*dev
,
4054 const struct snd_soc_codec_driver
*codec_drv
,
4055 struct snd_soc_dai_driver
*dai_drv
,
4059 struct snd_soc_codec
*codec
;
4062 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
4064 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
4068 /* create CODEC component name */
4069 codec
->name
= fmt_single_name(dev
, &codec
->id
);
4070 if (codec
->name
== NULL
) {
4075 if (codec_drv
->compress_type
)
4076 codec
->compress_type
= codec_drv
->compress_type
;
4078 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
4080 codec
->write
= codec_drv
->write
;
4081 codec
->read
= codec_drv
->read
;
4082 codec
->volatile_register
= codec_drv
->volatile_register
;
4083 codec
->readable_register
= codec_drv
->readable_register
;
4084 codec
->writable_register
= codec_drv
->writable_register
;
4085 codec
->ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
4086 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
4087 codec
->dapm
.dev
= dev
;
4088 codec
->dapm
.codec
= codec
;
4089 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
4090 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
4092 codec
->driver
= codec_drv
;
4093 codec
->num_dai
= num_dai
;
4094 mutex_init(&codec
->mutex
);
4096 /* allocate CODEC register cache */
4097 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
4098 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
4099 codec
->reg_size
= reg_size
;
4100 /* it is necessary to make a copy of the default register cache
4101 * because in the case of using a compression type that requires
4102 * the default register cache to be marked as the
4103 * kernel might have freed the array by the time we initialize
4106 if (codec_drv
->reg_cache_default
) {
4107 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
4108 reg_size
, GFP_KERNEL
);
4109 if (!codec
->reg_def_copy
) {
4111 goto fail_codec_name
;
4116 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
4117 if (!codec
->volatile_register
)
4118 codec
->volatile_register
= snd_soc_default_volatile_register
;
4119 if (!codec
->readable_register
)
4120 codec
->readable_register
= snd_soc_default_readable_register
;
4121 if (!codec
->writable_register
)
4122 codec
->writable_register
= snd_soc_default_writable_register
;
4125 for (i
= 0; i
< num_dai
; i
++) {
4126 fixup_codec_formats(&dai_drv
[i
].playback
);
4127 fixup_codec_formats(&dai_drv
[i
].capture
);
4130 mutex_lock(&client_mutex
);
4131 list_add(&codec
->list
, &codec_list
);
4132 mutex_unlock(&client_mutex
);
4134 /* register any DAIs */
4135 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
4137 dev_err(codec
->dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4138 goto fail_codec_name
;
4141 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n", codec
->name
);
4145 mutex_lock(&client_mutex
);
4146 list_del(&codec
->list
);
4147 mutex_unlock(&client_mutex
);
4154 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
4157 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4159 * @codec: codec to unregister
4161 void snd_soc_unregister_codec(struct device
*dev
)
4163 struct snd_soc_codec
*codec
;
4165 list_for_each_entry(codec
, &codec_list
, list
) {
4166 if (dev
== codec
->dev
)
4172 snd_soc_unregister_dais(dev
, codec
->num_dai
);
4174 mutex_lock(&client_mutex
);
4175 list_del(&codec
->list
);
4176 mutex_unlock(&client_mutex
);
4178 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n", codec
->name
);
4180 snd_soc_cache_exit(codec
);
4181 kfree(codec
->reg_def_copy
);
4185 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
4189 * snd_soc_register_component - Register a component with the ASoC core
4192 int snd_soc_register_component(struct device
*dev
,
4193 const struct snd_soc_component_driver
*cmpnt_drv
,
4194 struct snd_soc_dai_driver
*dai_drv
,
4197 struct snd_soc_component
*cmpnt
;
4200 dev_dbg(dev
, "component register %s\n", dev_name(dev
));
4202 cmpnt
= devm_kzalloc(dev
, sizeof(*cmpnt
), GFP_KERNEL
);
4204 dev_err(dev
, "ASoC: Failed to allocate memory\n");
4208 cmpnt
->name
= fmt_single_name(dev
, &cmpnt
->id
);
4210 dev_err(dev
, "ASoC: Failed to simplifying name\n");
4215 cmpnt
->driver
= cmpnt_drv
;
4216 cmpnt
->num_dai
= num_dai
;
4219 * snd_soc_register_dai() uses fmt_single_name(), and
4220 * snd_soc_register_dais() uses fmt_multiple_name()
4221 * for dai->name which is used for name based matching
4224 ret
= snd_soc_register_dai(dev
, dai_drv
);
4226 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
4228 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4229 goto error_component_name
;
4232 mutex_lock(&client_mutex
);
4233 list_add(&cmpnt
->list
, &component_list
);
4234 mutex_unlock(&client_mutex
);
4236 dev_dbg(cmpnt
->dev
, "ASoC: Registered component '%s'\n", cmpnt
->name
);
4240 error_component_name
:
4245 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
4248 * snd_soc_unregister_component - Unregister a component from the ASoC core
4251 void snd_soc_unregister_component(struct device
*dev
)
4253 struct snd_soc_component
*cmpnt
;
4255 list_for_each_entry(cmpnt
, &component_list
, list
) {
4256 if (dev
== cmpnt
->dev
)
4262 snd_soc_unregister_dais(dev
, cmpnt
->num_dai
);
4264 mutex_lock(&client_mutex
);
4265 list_del(&cmpnt
->list
);
4266 mutex_unlock(&client_mutex
);
4268 dev_dbg(dev
, "ASoC: Unregistered component '%s'\n", cmpnt
->name
);
4271 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
4273 /* Retrieve a card's name from device tree */
4274 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
4275 const char *propname
)
4277 struct device_node
*np
= card
->dev
->of_node
;
4280 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
4282 * EINVAL means the property does not exist. This is fine providing
4283 * card->name was previously set, which is checked later in
4284 * snd_soc_register_card.
4286 if (ret
< 0 && ret
!= -EINVAL
) {
4288 "ASoC: Property '%s' could not be read: %d\n",
4295 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
4297 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4298 const char *propname
)
4300 struct device_node
*np
= card
->dev
->of_node
;
4302 struct snd_soc_dapm_route
*routes
;
4305 num_routes
= of_property_count_strings(np
, propname
);
4306 if (num_routes
< 0 || num_routes
& 1) {
4307 dev_err(card
->dev
, "ASoC: Property '%s' does not exist or its"
4308 " length is not even\n", propname
);
4313 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4318 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4322 "ASoC: Could not allocate DAPM route table\n");
4326 for (i
= 0; i
< num_routes
; i
++) {
4327 ret
= of_property_read_string_index(np
, propname
,
4328 2 * i
, &routes
[i
].sink
);
4331 "ASoC: Property '%s' index %d could not be read: %d\n",
4332 propname
, 2 * i
, ret
);
4335 ret
= of_property_read_string_index(np
, propname
,
4336 (2 * i
) + 1, &routes
[i
].source
);
4339 "ASoC: Property '%s' index %d could not be read: %d\n",
4340 propname
, (2 * i
) + 1, ret
);
4345 card
->num_dapm_routes
= num_routes
;
4346 card
->dapm_routes
= routes
;
4350 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4352 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4357 unsigned int format
= 0;
4363 } of_fmt_table
[] = {
4364 { "i2s", SND_SOC_DAIFMT_I2S
},
4365 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4366 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4367 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4368 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4369 { "ac97", SND_SOC_DAIFMT_AC97
},
4370 { "pdm", SND_SOC_DAIFMT_PDM
},
4371 { "msb", SND_SOC_DAIFMT_MSB
},
4372 { "lsb", SND_SOC_DAIFMT_LSB
},
4379 * check "[prefix]format = xxx"
4380 * SND_SOC_DAIFMT_FORMAT_MASK area
4382 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4383 ret
= of_property_read_string(np
, prop
, &str
);
4385 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4386 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4387 format
|= of_fmt_table
[i
].val
;
4394 * check "[prefix]continuous-clock"
4395 * SND_SOC_DAIFMT_CLOCK_MASK area
4397 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4398 if (of_get_property(np
, prop
, NULL
))
4399 format
|= SND_SOC_DAIFMT_CONT
;
4401 format
|= SND_SOC_DAIFMT_GATED
;
4404 * check "[prefix]bitclock-inversion"
4405 * check "[prefix]frame-inversion"
4406 * SND_SOC_DAIFMT_INV_MASK area
4408 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4409 bit
= !!of_get_property(np
, prop
, NULL
);
4411 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4412 frame
= !!of_get_property(np
, prop
, NULL
);
4414 switch ((bit
<< 4) + frame
) {
4416 format
|= SND_SOC_DAIFMT_IB_IF
;
4419 format
|= SND_SOC_DAIFMT_IB_NF
;
4422 format
|= SND_SOC_DAIFMT_NB_IF
;
4425 /* SND_SOC_DAIFMT_NB_NF is default */
4430 * check "[prefix]bitclock-master"
4431 * check "[prefix]frame-master"
4432 * SND_SOC_DAIFMT_MASTER_MASK area
4434 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4435 bit
= !!of_get_property(np
, prop
, NULL
);
4437 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4438 frame
= !!of_get_property(np
, prop
, NULL
);
4440 switch ((bit
<< 4) + frame
) {
4442 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4445 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4448 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4451 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4457 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4459 static int __init
snd_soc_init(void)
4461 #ifdef CONFIG_DEBUG_FS
4462 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
4463 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
4464 pr_warn("ASoC: Failed to create debugfs directory\n");
4465 snd_soc_debugfs_root
= NULL
;
4468 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
4470 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4472 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
4474 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4476 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
4477 &platform_list_fops
))
4478 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4481 snd_soc_util_init();
4483 return platform_driver_register(&soc_driver
);
4485 module_init(snd_soc_init
);
4487 static void __exit
snd_soc_exit(void)
4489 snd_soc_util_exit();
4491 #ifdef CONFIG_DEBUG_FS
4492 debugfs_remove_recursive(snd_soc_debugfs_root
);
4494 platform_driver_unregister(&soc_driver
);
4496 module_exit(snd_soc_exit
);
4498 /* Module information */
4499 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4500 MODULE_DESCRIPTION("ALSA SoC Core");
4501 MODULE_LICENSE("GPL");
4502 MODULE_ALIAS("platform:soc-audio");