2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/pinctrl/consumer.h>
34 #include <linux/ctype.h>
35 #include <linux/slab.h>
37 #include <linux/gpio.h>
38 #include <linux/of_gpio.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/core.h>
41 #include <sound/jack.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc.h>
45 #include <sound/soc-dpcm.h>
46 #include <sound/initval.h>
48 #define CREATE_TRACE_POINTS
49 #include <trace/events/asoc.h>
53 #ifdef CONFIG_DEBUG_FS
54 struct dentry
*snd_soc_debugfs_root
;
55 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
58 static DEFINE_MUTEX(client_mutex
);
59 static LIST_HEAD(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 struct snd_ac97_reset_cfg
{
74 struct pinctrl_state
*pstate_reset
;
75 struct pinctrl_state
*pstate_warm_reset
;
76 struct pinctrl_state
*pstate_run
;
82 /* returns the minimum number of bytes needed to represent
83 * a particular given value */
84 static int min_bytes_needed(unsigned long val
)
89 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
92 c
= (sizeof val
* 8) - c
;
100 /* fill buf which is 'len' bytes with a formatted
101 * string of the form 'reg: value\n' */
102 static int format_register_str(struct snd_soc_codec
*codec
,
103 unsigned int reg
, char *buf
, size_t len
)
105 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
106 int regsize
= codec
->driver
->reg_word_size
* 2;
108 char tmpbuf
[len
+ 1];
109 char regbuf
[regsize
+ 1];
111 /* since tmpbuf is allocated on the stack, warn the callers if they
112 * try to abuse this function */
115 /* +2 for ': ' and + 1 for '\n' */
116 if (wordsize
+ regsize
+ 2 + 1 != len
)
119 ret
= snd_soc_read(codec
, reg
);
121 memset(regbuf
, 'X', regsize
);
122 regbuf
[regsize
] = '\0';
124 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
127 /* prepare the buffer */
128 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
129 /* copy it back to the caller without the '\0' */
130 memcpy(buf
, tmpbuf
, len
);
135 /* codec register dump */
136 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
137 size_t count
, loff_t pos
)
140 int wordsize
, regsize
;
145 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
146 regsize
= codec
->driver
->reg_word_size
* 2;
148 len
= wordsize
+ regsize
+ 2 + 1;
150 if (!codec
->driver
->reg_cache_size
)
153 if (codec
->driver
->reg_cache_step
)
154 step
= codec
->driver
->reg_cache_step
;
156 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
157 /* only support larger than PAGE_SIZE bytes debugfs
158 * entries for the default case */
160 if (total
+ len
>= count
- 1)
162 format_register_str(codec
, i
, buf
+ total
, len
);
168 total
= min(total
, count
- 1);
173 static ssize_t
codec_reg_show(struct device
*dev
,
174 struct device_attribute
*attr
, char *buf
)
176 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
178 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
181 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
183 static ssize_t
pmdown_time_show(struct device
*dev
,
184 struct device_attribute
*attr
, char *buf
)
186 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
188 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
191 static ssize_t
pmdown_time_set(struct device
*dev
,
192 struct device_attribute
*attr
,
193 const char *buf
, size_t count
)
195 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
198 ret
= kstrtol(buf
, 10, &rtd
->pmdown_time
);
205 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
207 #ifdef CONFIG_DEBUG_FS
208 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
209 size_t count
, loff_t
*ppos
)
212 struct snd_soc_codec
*codec
= file
->private_data
;
215 if (*ppos
< 0 || !count
)
218 buf
= kmalloc(count
, GFP_KERNEL
);
222 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
224 if (copy_to_user(user_buf
, buf
, ret
)) {
235 static ssize_t
codec_reg_write_file(struct file
*file
,
236 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
241 unsigned long reg
, value
;
242 struct snd_soc_codec
*codec
= file
->private_data
;
245 buf_size
= min(count
, (sizeof(buf
)-1));
246 if (copy_from_user(buf
, user_buf
, buf_size
))
250 while (*start
== ' ')
252 reg
= simple_strtoul(start
, &start
, 16);
253 while (*start
== ' ')
255 ret
= kstrtoul(start
, 16, &value
);
259 /* Userspace has been fiddling around behind the kernel's back */
260 add_taint(TAINT_USER
, LOCKDEP_NOW_UNRELIABLE
);
262 snd_soc_write(codec
, reg
, value
);
266 static const struct file_operations codec_reg_fops
= {
268 .read
= codec_reg_read_file
,
269 .write
= codec_reg_write_file
,
270 .llseek
= default_llseek
,
273 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
275 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
277 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
279 if (!codec
->debugfs_codec_root
) {
281 "ASoC: Failed to create codec debugfs directory\n");
285 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
287 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
290 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
291 codec
->debugfs_codec_root
,
292 codec
, &codec_reg_fops
);
293 if (!codec
->debugfs_reg
)
295 "ASoC: Failed to create codec register debugfs file\n");
297 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
300 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
302 debugfs_remove_recursive(codec
->debugfs_codec_root
);
305 static void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
307 struct dentry
*debugfs_card_root
= platform
->card
->debugfs_card_root
;
309 platform
->debugfs_platform_root
= debugfs_create_dir(platform
->name
,
311 if (!platform
->debugfs_platform_root
) {
312 dev_warn(platform
->dev
,
313 "ASoC: Failed to create platform debugfs directory\n");
317 snd_soc_dapm_debugfs_init(&platform
->dapm
,
318 platform
->debugfs_platform_root
);
321 static void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
323 debugfs_remove_recursive(platform
->debugfs_platform_root
);
326 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
327 size_t count
, loff_t
*ppos
)
329 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
330 ssize_t len
, ret
= 0;
331 struct snd_soc_codec
*codec
;
336 list_for_each_entry(codec
, &codec_list
, list
) {
337 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
341 if (ret
> PAGE_SIZE
) {
348 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
355 static const struct file_operations codec_list_fops
= {
356 .read
= codec_list_read_file
,
357 .llseek
= default_llseek
,/* read accesses f_pos */
360 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
361 size_t count
, loff_t
*ppos
)
363 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
364 ssize_t len
, ret
= 0;
365 struct snd_soc_component
*component
;
366 struct snd_soc_dai
*dai
;
371 list_for_each_entry(component
, &component_list
, list
) {
372 list_for_each_entry(dai
, &component
->dai_list
, list
) {
373 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
377 if (ret
> PAGE_SIZE
) {
384 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
391 static const struct file_operations dai_list_fops
= {
392 .read
= dai_list_read_file
,
393 .llseek
= default_llseek
,/* read accesses f_pos */
396 static ssize_t
platform_list_read_file(struct file
*file
,
397 char __user
*user_buf
,
398 size_t count
, loff_t
*ppos
)
400 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
401 ssize_t len
, ret
= 0;
402 struct snd_soc_platform
*platform
;
407 list_for_each_entry(platform
, &platform_list
, list
) {
408 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
412 if (ret
> PAGE_SIZE
) {
418 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
425 static const struct file_operations platform_list_fops
= {
426 .read
= platform_list_read_file
,
427 .llseek
= default_llseek
,/* read accesses f_pos */
430 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
432 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
433 snd_soc_debugfs_root
);
434 if (!card
->debugfs_card_root
) {
436 "ASoC: Failed to create card debugfs directory\n");
440 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
441 card
->debugfs_card_root
,
443 if (!card
->debugfs_pop_time
)
445 "ASoC: Failed to create pop time debugfs file\n");
448 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
450 debugfs_remove_recursive(card
->debugfs_card_root
);
455 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
459 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
463 static inline void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
467 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
471 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
475 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
480 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
481 const char *dai_link
, int stream
)
485 for (i
= 0; i
< card
->num_links
; i
++) {
486 if (card
->rtd
[i
].dai_link
->no_pcm
&&
487 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
488 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
490 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
493 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
495 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
496 const char *dai_link
)
500 for (i
= 0; i
< card
->num_links
; i
++) {
501 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
502 return &card
->rtd
[i
];
504 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
507 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
509 #ifdef CONFIG_SND_SOC_AC97_BUS
510 /* unregister ac97 codec */
511 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
513 if (codec
->ac97
->dev
.bus
)
514 device_unregister(&codec
->ac97
->dev
);
518 /* stop no dev release warning */
519 static void soc_ac97_device_release(struct device
*dev
){}
521 /* register ac97 codec to bus */
522 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
526 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
527 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
528 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
530 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
531 codec
->card
->snd_card
->number
, 0, codec
->name
);
532 err
= device_register(&codec
->ac97
->dev
);
534 dev_err(codec
->dev
, "ASoC: Can't register ac97 bus\n");
535 codec
->ac97
->dev
.bus
= NULL
;
542 static void codec2codec_close_delayed_work(struct work_struct
*work
)
544 /* Currently nothing to do for c2c links
545 * Since c2c links are internal nodes in the DAPM graph and
546 * don't interface with the outside world or application layer
547 * we don't have to do any special handling on close.
551 #ifdef CONFIG_PM_SLEEP
552 /* powers down audio subsystem for suspend */
553 int snd_soc_suspend(struct device
*dev
)
555 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
556 struct snd_soc_codec
*codec
;
559 /* If the initialization of this soc device failed, there is no codec
560 * associated with it. Just bail out in this case.
562 if (list_empty(&card
->codec_dev_list
))
565 /* Due to the resume being scheduled into a workqueue we could
566 * suspend before that's finished - wait for it to complete.
568 snd_power_lock(card
->snd_card
);
569 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
570 snd_power_unlock(card
->snd_card
);
572 /* we're going to block userspace touching us until resume completes */
573 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
575 /* mute any active DACs */
576 for (i
= 0; i
< card
->num_rtd
; i
++) {
577 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
578 struct snd_soc_dai_driver
*drv
= dai
->driver
;
580 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
583 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
584 drv
->ops
->digital_mute(dai
, 1);
587 /* suspend all pcms */
588 for (i
= 0; i
< card
->num_rtd
; i
++) {
589 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
592 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
595 if (card
->suspend_pre
)
596 card
->suspend_pre(card
);
598 for (i
= 0; i
< card
->num_rtd
; i
++) {
599 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
600 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
602 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
605 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
606 cpu_dai
->driver
->suspend(cpu_dai
);
607 if (platform
->driver
->suspend
&& !platform
->suspended
) {
608 platform
->driver
->suspend(cpu_dai
);
609 platform
->suspended
= 1;
613 /* close any waiting streams and save state */
614 for (i
= 0; i
< card
->num_rtd
; i
++) {
615 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
616 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
619 for (i
= 0; i
< card
->num_rtd
; i
++) {
621 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
624 snd_soc_dapm_stream_event(&card
->rtd
[i
],
625 SNDRV_PCM_STREAM_PLAYBACK
,
626 SND_SOC_DAPM_STREAM_SUSPEND
);
628 snd_soc_dapm_stream_event(&card
->rtd
[i
],
629 SNDRV_PCM_STREAM_CAPTURE
,
630 SND_SOC_DAPM_STREAM_SUSPEND
);
633 /* Recheck all analogue paths too */
634 dapm_mark_io_dirty(&card
->dapm
);
635 snd_soc_dapm_sync(&card
->dapm
);
637 /* suspend all CODECs */
638 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
639 /* If there are paths active then the CODEC will be held with
640 * bias _ON and should not be suspended. */
641 if (!codec
->suspended
&& codec
->driver
->suspend
) {
642 switch (codec
->dapm
.bias_level
) {
643 case SND_SOC_BIAS_STANDBY
:
645 * If the CODEC is capable of idle
646 * bias off then being in STANDBY
647 * means it's doing something,
648 * otherwise fall through.
650 if (codec
->dapm
.idle_bias_off
) {
652 "ASoC: idle_bias_off CODEC on over suspend\n");
655 case SND_SOC_BIAS_OFF
:
656 codec
->driver
->suspend(codec
);
657 codec
->suspended
= 1;
658 codec
->cache_sync
= 1;
659 if (codec
->using_regmap
)
660 regcache_mark_dirty(codec
->control_data
);
661 /* deactivate pins to sleep state */
662 pinctrl_pm_select_sleep_state(codec
->dev
);
666 "ASoC: CODEC is on over suspend\n");
672 for (i
= 0; i
< card
->num_rtd
; i
++) {
673 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
675 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
678 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
679 cpu_dai
->driver
->suspend(cpu_dai
);
681 /* deactivate pins to sleep state */
682 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
685 if (card
->suspend_post
)
686 card
->suspend_post(card
);
690 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
692 /* deferred resume work, so resume can complete before we finished
693 * setting our codec back up, which can be very slow on I2C
695 static void soc_resume_deferred(struct work_struct
*work
)
697 struct snd_soc_card
*card
=
698 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
699 struct snd_soc_codec
*codec
;
702 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
703 * so userspace apps are blocked from touching us
706 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
708 /* Bring us up into D2 so that DAPM starts enabling things */
709 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
711 if (card
->resume_pre
)
712 card
->resume_pre(card
);
714 /* resume AC97 DAIs */
715 for (i
= 0; i
< card
->num_rtd
; i
++) {
716 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
718 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
721 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
722 cpu_dai
->driver
->resume(cpu_dai
);
725 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
726 /* If the CODEC was idle over suspend then it will have been
727 * left with bias OFF or STANDBY and suspended so we must now
728 * resume. Otherwise the suspend was suppressed.
730 if (codec
->driver
->resume
&& codec
->suspended
) {
731 switch (codec
->dapm
.bias_level
) {
732 case SND_SOC_BIAS_STANDBY
:
733 case SND_SOC_BIAS_OFF
:
734 codec
->driver
->resume(codec
);
735 codec
->suspended
= 0;
739 "ASoC: CODEC was on over suspend\n");
745 for (i
= 0; i
< card
->num_rtd
; i
++) {
747 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
750 snd_soc_dapm_stream_event(&card
->rtd
[i
],
751 SNDRV_PCM_STREAM_PLAYBACK
,
752 SND_SOC_DAPM_STREAM_RESUME
);
754 snd_soc_dapm_stream_event(&card
->rtd
[i
],
755 SNDRV_PCM_STREAM_CAPTURE
,
756 SND_SOC_DAPM_STREAM_RESUME
);
759 /* unmute any active DACs */
760 for (i
= 0; i
< card
->num_rtd
; i
++) {
761 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
762 struct snd_soc_dai_driver
*drv
= dai
->driver
;
764 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
767 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
768 drv
->ops
->digital_mute(dai
, 0);
771 for (i
= 0; i
< card
->num_rtd
; i
++) {
772 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
773 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
775 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
778 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
779 cpu_dai
->driver
->resume(cpu_dai
);
780 if (platform
->driver
->resume
&& platform
->suspended
) {
781 platform
->driver
->resume(cpu_dai
);
782 platform
->suspended
= 0;
786 if (card
->resume_post
)
787 card
->resume_post(card
);
789 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
791 /* userspace can access us now we are back as we were before */
792 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
794 /* Recheck all analogue paths too */
795 dapm_mark_io_dirty(&card
->dapm
);
796 snd_soc_dapm_sync(&card
->dapm
);
799 /* powers up audio subsystem after a suspend */
800 int snd_soc_resume(struct device
*dev
)
802 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
803 int i
, ac97_control
= 0;
805 /* If the initialization of this soc device failed, there is no codec
806 * associated with it. Just bail out in this case.
808 if (list_empty(&card
->codec_dev_list
))
811 /* activate pins from sleep state */
812 for (i
= 0; i
< card
->num_rtd
; i
++) {
813 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
814 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
816 pinctrl_pm_select_default_state(cpu_dai
->dev
);
817 if (codec_dai
->active
)
818 pinctrl_pm_select_default_state(codec_dai
->dev
);
821 /* AC97 devices might have other drivers hanging off them so
822 * need to resume immediately. Other drivers don't have that
823 * problem and may take a substantial amount of time to resume
824 * due to I/O costs and anti-pop so handle them out of line.
826 for (i
= 0; i
< card
->num_rtd
; i
++) {
827 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
828 ac97_control
|= cpu_dai
->driver
->ac97_control
;
831 dev_dbg(dev
, "ASoC: Resuming AC97 immediately\n");
832 soc_resume_deferred(&card
->deferred_resume_work
);
834 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
835 if (!schedule_work(&card
->deferred_resume_work
))
836 dev_err(dev
, "ASoC: resume work item may be lost\n");
841 EXPORT_SYMBOL_GPL(snd_soc_resume
);
843 #define snd_soc_suspend NULL
844 #define snd_soc_resume NULL
847 static const struct snd_soc_dai_ops null_dai_ops
= {
850 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
852 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
853 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
854 struct snd_soc_component
*component
;
855 struct snd_soc_codec
*codec
;
856 struct snd_soc_platform
*platform
;
857 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
858 const char *platform_name
;
860 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
862 /* Find CPU DAI from registered DAIs*/
863 list_for_each_entry(component
, &component_list
, list
) {
864 if (dai_link
->cpu_of_node
&&
865 component
->dev
->of_node
!= dai_link
->cpu_of_node
)
867 if (dai_link
->cpu_name
&&
868 strcmp(dev_name(component
->dev
), dai_link
->cpu_name
))
870 list_for_each_entry(cpu_dai
, &component
->dai_list
, list
) {
871 if (dai_link
->cpu_dai_name
&&
872 strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
875 rtd
->cpu_dai
= cpu_dai
;
880 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
881 dai_link
->cpu_dai_name
);
882 return -EPROBE_DEFER
;
885 /* Find CODEC from registered CODECs */
886 list_for_each_entry(codec
, &codec_list
, list
) {
887 if (dai_link
->codec_of_node
) {
888 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
891 if (strcmp(codec
->name
, dai_link
->codec_name
))
898 * CODEC found, so find CODEC DAI from registered DAIs from
901 list_for_each_entry(codec_dai
, &codec
->component
.dai_list
, list
) {
902 if (!strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
903 rtd
->codec_dai
= codec_dai
;
908 if (!rtd
->codec_dai
) {
909 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
910 dai_link
->codec_dai_name
);
911 return -EPROBE_DEFER
;
916 dev_err(card
->dev
, "ASoC: CODEC %s not registered\n",
917 dai_link
->codec_name
);
918 return -EPROBE_DEFER
;
921 /* if there's no platform we match on the empty platform */
922 platform_name
= dai_link
->platform_name
;
923 if (!platform_name
&& !dai_link
->platform_of_node
)
924 platform_name
= "snd-soc-dummy";
926 /* find one from the set of registered platforms */
927 list_for_each_entry(platform
, &platform_list
, list
) {
928 if (dai_link
->platform_of_node
) {
929 if (platform
->dev
->of_node
!=
930 dai_link
->platform_of_node
)
933 if (strcmp(platform
->name
, platform_name
))
937 rtd
->platform
= platform
;
939 if (!rtd
->platform
) {
940 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
941 dai_link
->platform_name
);
942 return -EPROBE_DEFER
;
950 static int soc_remove_platform(struct snd_soc_platform
*platform
)
954 if (platform
->driver
->remove
) {
955 ret
= platform
->driver
->remove(platform
);
957 dev_err(platform
->dev
, "ASoC: failed to remove %d\n",
961 /* Make sure all DAPM widgets are freed */
962 snd_soc_dapm_free(&platform
->dapm
);
964 soc_cleanup_platform_debugfs(platform
);
965 platform
->probed
= 0;
966 list_del(&platform
->card_list
);
967 module_put(platform
->dev
->driver
->owner
);
972 static void soc_remove_codec(struct snd_soc_codec
*codec
)
976 if (codec
->driver
->remove
) {
977 err
= codec
->driver
->remove(codec
);
979 dev_err(codec
->dev
, "ASoC: failed to remove %d\n", err
);
982 /* Make sure all DAPM widgets are freed */
983 snd_soc_dapm_free(&codec
->dapm
);
985 soc_cleanup_codec_debugfs(codec
);
987 list_del(&codec
->card_list
);
988 module_put(codec
->dev
->driver
->owner
);
991 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
993 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
994 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
997 /* unregister the rtd device */
998 if (rtd
->dev_registered
) {
999 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
1000 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1001 device_unregister(rtd
->dev
);
1002 rtd
->dev_registered
= 0;
1005 /* remove the CODEC DAI */
1006 if (codec_dai
&& codec_dai
->probed
&&
1007 codec_dai
->driver
->remove_order
== order
) {
1008 if (codec_dai
->driver
->remove
) {
1009 err
= codec_dai
->driver
->remove(codec_dai
);
1011 dev_err(codec_dai
->dev
,
1012 "ASoC: failed to remove %s: %d\n",
1013 codec_dai
->name
, err
);
1015 codec_dai
->probed
= 0;
1016 list_del(&codec_dai
->card_list
);
1019 /* remove the cpu_dai */
1020 if (cpu_dai
&& cpu_dai
->probed
&&
1021 cpu_dai
->driver
->remove_order
== order
) {
1022 if (cpu_dai
->driver
->remove
) {
1023 err
= cpu_dai
->driver
->remove(cpu_dai
);
1025 dev_err(cpu_dai
->dev
,
1026 "ASoC: failed to remove %s: %d\n",
1027 cpu_dai
->name
, err
);
1029 cpu_dai
->probed
= 0;
1030 list_del(&cpu_dai
->card_list
);
1032 if (!cpu_dai
->codec
) {
1033 snd_soc_dapm_free(&cpu_dai
->dapm
);
1034 module_put(cpu_dai
->dev
->driver
->owner
);
1039 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1042 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1043 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1044 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1045 struct snd_soc_platform
*platform
= rtd
->platform
;
1046 struct snd_soc_codec
*codec
;
1048 /* remove the platform */
1049 if (platform
&& platform
->probed
&&
1050 platform
->driver
->remove_order
== order
) {
1051 soc_remove_platform(platform
);
1054 /* remove the CODEC-side CODEC */
1056 codec
= codec_dai
->codec
;
1057 if (codec
&& codec
->probed
&&
1058 codec
->driver
->remove_order
== order
)
1059 soc_remove_codec(codec
);
1062 /* remove any CPU-side CODEC */
1064 codec
= cpu_dai
->codec
;
1065 if (codec
&& codec
->probed
&&
1066 codec
->driver
->remove_order
== order
)
1067 soc_remove_codec(codec
);
1071 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1075 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1077 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1078 soc_remove_link_dais(card
, dai
, order
);
1081 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1083 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1084 soc_remove_link_components(card
, dai
, order
);
1090 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1091 struct snd_soc_codec
*codec
)
1095 if (card
->codec_conf
== NULL
)
1098 for (i
= 0; i
< card
->num_configs
; i
++) {
1099 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1100 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
1101 codec
->name_prefix
= map
->name_prefix
;
1107 static int soc_probe_codec(struct snd_soc_card
*card
,
1108 struct snd_soc_codec
*codec
)
1111 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1112 struct snd_soc_dai
*dai
;
1115 codec
->dapm
.card
= card
;
1116 soc_set_name_prefix(card
, codec
);
1118 if (!try_module_get(codec
->dev
->driver
->owner
))
1121 soc_init_codec_debugfs(codec
);
1123 if (driver
->dapm_widgets
) {
1124 ret
= snd_soc_dapm_new_controls(&codec
->dapm
,
1125 driver
->dapm_widgets
,
1126 driver
->num_dapm_widgets
);
1130 "Failed to create new controls %d\n", ret
);
1135 /* Create DAPM widgets for each DAI stream */
1136 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
) {
1137 ret
= snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1141 "Failed to create DAI widgets %d\n", ret
);
1146 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1148 if (!codec
->write
&& dev_get_regmap(codec
->dev
, NULL
)) {
1149 /* Set the default I/O up try regmap */
1150 ret
= snd_soc_codec_set_cache_io(codec
, NULL
);
1153 "Failed to set cache I/O: %d\n", ret
);
1158 if (driver
->probe
) {
1159 ret
= driver
->probe(codec
);
1162 "ASoC: failed to probe CODEC %d\n", ret
);
1165 WARN(codec
->dapm
.idle_bias_off
&&
1166 codec
->dapm
.bias_level
!= SND_SOC_BIAS_OFF
,
1167 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1171 if (driver
->controls
)
1172 snd_soc_add_codec_controls(codec
, driver
->controls
,
1173 driver
->num_controls
);
1174 if (driver
->dapm_routes
)
1175 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1176 driver
->num_dapm_routes
);
1178 /* mark codec as probed and add to card codec list */
1180 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1181 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1186 soc_cleanup_codec_debugfs(codec
);
1187 module_put(codec
->dev
->driver
->owner
);
1192 static int soc_probe_platform(struct snd_soc_card
*card
,
1193 struct snd_soc_platform
*platform
)
1196 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1197 struct snd_soc_component
*component
;
1198 struct snd_soc_dai
*dai
;
1200 platform
->card
= card
;
1201 platform
->dapm
.card
= card
;
1203 if (!try_module_get(platform
->dev
->driver
->owner
))
1206 soc_init_platform_debugfs(platform
);
1208 if (driver
->dapm_widgets
)
1209 snd_soc_dapm_new_controls(&platform
->dapm
,
1210 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1212 /* Create DAPM widgets for each DAI stream */
1213 list_for_each_entry(component
, &component_list
, list
) {
1214 if (component
->dev
!= platform
->dev
)
1216 list_for_each_entry(dai
, &component
->dai_list
, list
)
1217 snd_soc_dapm_new_dai_widgets(&platform
->dapm
, dai
);
1220 platform
->dapm
.idle_bias_off
= 1;
1222 if (driver
->probe
) {
1223 ret
= driver
->probe(platform
);
1225 dev_err(platform
->dev
,
1226 "ASoC: failed to probe platform %d\n", ret
);
1231 if (driver
->controls
)
1232 snd_soc_add_platform_controls(platform
, driver
->controls
,
1233 driver
->num_controls
);
1234 if (driver
->dapm_routes
)
1235 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1236 driver
->num_dapm_routes
);
1238 /* mark platform as probed and add to card platform list */
1239 platform
->probed
= 1;
1240 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1241 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1246 soc_cleanup_platform_debugfs(platform
);
1247 module_put(platform
->dev
->driver
->owner
);
1252 static void rtd_release(struct device
*dev
)
1257 static int soc_post_component_init(struct snd_soc_card
*card
,
1258 struct snd_soc_codec
*codec
,
1259 int num
, int dailess
)
1261 struct snd_soc_dai_link
*dai_link
= NULL
;
1262 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1263 struct snd_soc_pcm_runtime
*rtd
;
1268 dai_link
= &card
->dai_link
[num
];
1269 rtd
= &card
->rtd
[num
];
1270 name
= dai_link
->name
;
1272 aux_dev
= &card
->aux_dev
[num
];
1273 rtd
= &card
->rtd_aux
[num
];
1274 name
= aux_dev
->name
;
1278 /* do machine specific initialization */
1279 if (!dailess
&& dai_link
->init
)
1280 ret
= dai_link
->init(rtd
);
1281 else if (dailess
&& aux_dev
->init
)
1282 ret
= aux_dev
->init(&codec
->dapm
);
1284 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n", name
, ret
);
1288 /* register the rtd device */
1291 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1294 device_initialize(rtd
->dev
);
1295 rtd
->dev
->parent
= card
->dev
;
1296 rtd
->dev
->release
= rtd_release
;
1297 rtd
->dev
->init_name
= name
;
1298 dev_set_drvdata(rtd
->dev
, rtd
);
1299 mutex_init(&rtd
->pcm_mutex
);
1300 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1301 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1302 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1303 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1304 ret
= device_add(rtd
->dev
);
1306 /* calling put_device() here to free the rtd->dev */
1307 put_device(rtd
->dev
);
1309 "ASoC: failed to register runtime device: %d\n", ret
);
1312 rtd
->dev_registered
= 1;
1314 /* add DAPM sysfs entries for this codec */
1315 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1318 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret
);
1320 /* add codec sysfs entries */
1321 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1324 "ASoC: failed to add codec sysfs files: %d\n", ret
);
1326 #ifdef CONFIG_DEBUG_FS
1327 /* add DPCM sysfs entries */
1328 if (!dailess
&& !dai_link
->dynamic
)
1331 ret
= soc_dpcm_debugfs_add(rtd
);
1333 dev_err(rtd
->dev
, "ASoC: failed to add dpcm sysfs entries: %d\n", ret
);
1340 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1343 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1344 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1345 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1346 struct snd_soc_platform
*platform
= rtd
->platform
;
1349 /* probe the CPU-side component, if it is a CODEC */
1350 if (cpu_dai
->codec
&&
1351 !cpu_dai
->codec
->probed
&&
1352 cpu_dai
->codec
->driver
->probe_order
== order
) {
1353 ret
= soc_probe_codec(card
, cpu_dai
->codec
);
1358 /* probe the CODEC-side component */
1359 if (!codec_dai
->codec
->probed
&&
1360 codec_dai
->codec
->driver
->probe_order
== order
) {
1361 ret
= soc_probe_codec(card
, codec_dai
->codec
);
1366 /* probe the platform */
1367 if (!platform
->probed
&&
1368 platform
->driver
->probe_order
== order
) {
1369 ret
= soc_probe_platform(card
, platform
);
1377 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1379 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1380 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1381 struct snd_soc_codec
*codec
= rtd
->codec
;
1382 struct snd_soc_platform
*platform
= rtd
->platform
;
1383 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1384 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1385 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1388 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1389 card
->name
, num
, order
);
1391 /* config components */
1392 cpu_dai
->platform
= platform
;
1393 codec_dai
->card
= card
;
1394 cpu_dai
->card
= card
;
1396 /* set default power off timeout */
1397 rtd
->pmdown_time
= pmdown_time
;
1399 /* probe the cpu_dai */
1400 if (!cpu_dai
->probed
&&
1401 cpu_dai
->driver
->probe_order
== order
) {
1402 if (!cpu_dai
->codec
) {
1403 cpu_dai
->dapm
.card
= card
;
1404 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1407 list_add(&cpu_dai
->dapm
.list
, &card
->dapm_list
);
1410 if (cpu_dai
->driver
->probe
) {
1411 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1413 dev_err(cpu_dai
->dev
,
1414 "ASoC: failed to probe CPU DAI %s: %d\n",
1415 cpu_dai
->name
, ret
);
1416 module_put(cpu_dai
->dev
->driver
->owner
);
1420 cpu_dai
->probed
= 1;
1421 /* mark cpu_dai as probed and add to card dai list */
1422 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1425 /* probe the CODEC DAI */
1426 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1427 if (codec_dai
->driver
->probe
) {
1428 ret
= codec_dai
->driver
->probe(codec_dai
);
1430 dev_err(codec_dai
->dev
,
1431 "ASoC: failed to probe CODEC DAI %s: %d\n",
1432 codec_dai
->name
, ret
);
1437 /* mark codec_dai as probed and add to card dai list */
1438 codec_dai
->probed
= 1;
1439 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1442 /* complete DAI probe during last probe */
1443 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1446 ret
= soc_post_component_init(card
, codec
, num
, 0);
1450 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1452 dev_warn(rtd
->dev
, "ASoC: failed to add pmdown_time sysfs: %d\n",
1455 if (cpu_dai
->driver
->compress_dai
) {
1456 /*create compress_device"*/
1457 ret
= soc_new_compress(rtd
, num
);
1459 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1460 dai_link
->stream_name
);
1465 if (!dai_link
->params
) {
1466 /* create the pcm */
1467 ret
= soc_new_pcm(rtd
, num
);
1469 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1470 dai_link
->stream_name
, ret
);
1474 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1475 codec2codec_close_delayed_work
);
1477 /* link the DAI widgets */
1478 play_w
= codec_dai
->playback_widget
;
1479 capture_w
= cpu_dai
->capture_widget
;
1480 if (play_w
&& capture_w
) {
1481 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1484 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1485 play_w
->name
, capture_w
->name
, ret
);
1490 play_w
= cpu_dai
->playback_widget
;
1491 capture_w
= codec_dai
->capture_widget
;
1492 if (play_w
&& capture_w
) {
1493 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1496 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1497 play_w
->name
, capture_w
->name
, ret
);
1504 /* add platform data for AC97 devices */
1505 if (rtd
->codec_dai
->driver
->ac97_control
)
1506 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1511 #ifdef CONFIG_SND_SOC_AC97_BUS
1512 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1516 /* Only instantiate AC97 if not already done by the adaptor
1517 * for the generic AC97 subsystem.
1519 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1521 * It is possible that the AC97 device is already registered to
1522 * the device subsystem. This happens when the device is created
1523 * via snd_ac97_mixer(). Currently only SoC codec that does so
1524 * is the generic AC97 glue but others migh emerge.
1526 * In those cases we don't try to register the device again.
1528 if (!rtd
->codec
->ac97_created
)
1531 ret
= soc_ac97_dev_register(rtd
->codec
);
1533 dev_err(rtd
->codec
->dev
,
1534 "ASoC: AC97 device register failed: %d\n", ret
);
1538 rtd
->codec
->ac97_registered
= 1;
1543 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1545 if (codec
->ac97_registered
) {
1546 soc_ac97_dev_unregister(codec
);
1547 codec
->ac97_registered
= 0;
1552 static int soc_check_aux_dev(struct snd_soc_card
*card
, int num
)
1554 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1555 struct snd_soc_codec
*codec
;
1557 /* find CODEC from registered CODECs*/
1558 list_for_each_entry(codec
, &codec_list
, list
) {
1559 if (!strcmp(codec
->name
, aux_dev
->codec_name
))
1563 dev_err(card
->dev
, "ASoC: %s not registered\n", aux_dev
->codec_name
);
1565 return -EPROBE_DEFER
;
1568 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1570 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1571 struct snd_soc_codec
*codec
;
1574 /* find CODEC from registered CODECs*/
1575 list_for_each_entry(codec
, &codec_list
, list
) {
1576 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1577 if (codec
->probed
) {
1579 "ASoC: codec already probed");
1586 /* codec not found */
1587 dev_err(card
->dev
, "ASoC: codec %s not found", aux_dev
->codec_name
);
1588 return -EPROBE_DEFER
;
1591 ret
= soc_probe_codec(card
, codec
);
1595 ret
= soc_post_component_init(card
, codec
, num
, 1);
1601 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1603 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1604 struct snd_soc_codec
*codec
= rtd
->codec
;
1606 /* unregister the rtd device */
1607 if (rtd
->dev_registered
) {
1608 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1609 device_unregister(rtd
->dev
);
1610 rtd
->dev_registered
= 0;
1613 if (codec
&& codec
->probed
)
1614 soc_remove_codec(codec
);
1617 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1621 if (codec
->cache_init
)
1624 ret
= snd_soc_cache_init(codec
);
1627 "ASoC: Failed to set cache compression type: %d\n",
1631 codec
->cache_init
= 1;
1635 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1637 struct snd_soc_codec
*codec
;
1638 struct snd_soc_dai_link
*dai_link
;
1639 int ret
, i
, order
, dai_fmt
;
1641 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1644 for (i
= 0; i
< card
->num_links
; i
++) {
1645 ret
= soc_bind_dai_link(card
, i
);
1650 /* check aux_devs too */
1651 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1652 ret
= soc_check_aux_dev(card
, i
);
1657 /* initialize the register cache for each available codec */
1658 list_for_each_entry(codec
, &codec_list
, list
) {
1659 if (codec
->cache_init
)
1661 ret
= snd_soc_init_codec_cache(codec
);
1666 /* card bind complete so register a sound card */
1667 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1668 card
->owner
, 0, &card
->snd_card
);
1671 "ASoC: can't create sound card for card %s: %d\n",
1676 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1677 card
->dapm
.dev
= card
->dev
;
1678 card
->dapm
.card
= card
;
1679 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1681 #ifdef CONFIG_DEBUG_FS
1682 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1685 #ifdef CONFIG_PM_SLEEP
1686 /* deferred resume work */
1687 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1690 if (card
->dapm_widgets
)
1691 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1692 card
->num_dapm_widgets
);
1694 /* initialise the sound card only once */
1696 ret
= card
->probe(card
);
1698 goto card_probe_error
;
1701 /* probe all components used by DAI links on this card */
1702 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1704 for (i
= 0; i
< card
->num_links
; i
++) {
1705 ret
= soc_probe_link_components(card
, i
, order
);
1708 "ASoC: failed to instantiate card %d\n",
1715 /* probe all DAI links on this card */
1716 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1718 for (i
= 0; i
< card
->num_links
; i
++) {
1719 ret
= soc_probe_link_dais(card
, i
, order
);
1722 "ASoC: failed to instantiate card %d\n",
1729 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1730 ret
= soc_probe_aux_dev(card
, i
);
1733 "ASoC: failed to add auxiliary devices %d\n",
1735 goto probe_aux_dev_err
;
1739 snd_soc_dapm_link_dai_widgets(card
);
1740 snd_soc_dapm_connect_dai_link_widgets(card
);
1743 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1745 if (card
->dapm_routes
)
1746 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1747 card
->num_dapm_routes
);
1749 for (i
= 0; i
< card
->num_links
; i
++) {
1750 dai_link
= &card
->dai_link
[i
];
1751 dai_fmt
= dai_link
->dai_fmt
;
1754 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1756 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1757 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1758 "ASoC: Failed to set DAI format: %d\n",
1762 /* If this is a regular CPU link there will be a platform */
1764 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1765 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1767 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1768 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1769 "ASoC: Failed to set DAI format: %d\n",
1771 } else if (dai_fmt
) {
1772 /* Flip the polarity for the "CPU" end */
1773 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1774 switch (dai_link
->dai_fmt
&
1775 SND_SOC_DAIFMT_MASTER_MASK
) {
1776 case SND_SOC_DAIFMT_CBM_CFM
:
1777 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1779 case SND_SOC_DAIFMT_CBM_CFS
:
1780 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1782 case SND_SOC_DAIFMT_CBS_CFM
:
1783 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1785 case SND_SOC_DAIFMT_CBS_CFS
:
1786 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1790 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1792 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1793 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1794 "ASoC: Failed to set DAI format: %d\n",
1799 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1801 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1802 "%s", card
->long_name
? card
->long_name
: card
->name
);
1803 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1804 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1805 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1806 switch (card
->snd_card
->driver
[i
]) {
1812 if (!isalnum(card
->snd_card
->driver
[i
]))
1813 card
->snd_card
->driver
[i
] = '_';
1818 if (card
->late_probe
) {
1819 ret
= card
->late_probe(card
);
1821 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1823 goto probe_aux_dev_err
;
1827 if (card
->fully_routed
)
1828 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1829 snd_soc_dapm_auto_nc_codec_pins(codec
);
1831 snd_soc_dapm_new_widgets(card
);
1833 ret
= snd_card_register(card
->snd_card
);
1835 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1837 goto probe_aux_dev_err
;
1840 #ifdef CONFIG_SND_SOC_AC97_BUS
1841 /* register any AC97 codecs */
1842 for (i
= 0; i
< card
->num_rtd
; i
++) {
1843 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1846 "ASoC: failed to register AC97: %d\n", ret
);
1848 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1849 goto probe_aux_dev_err
;
1854 card
->instantiated
= 1;
1855 snd_soc_dapm_sync(&card
->dapm
);
1856 mutex_unlock(&card
->mutex
);
1861 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1862 soc_remove_aux_dev(card
, i
);
1865 soc_remove_dai_links(card
);
1871 snd_card_free(card
->snd_card
);
1874 mutex_unlock(&card
->mutex
);
1879 /* probes a new socdev */
1880 static int soc_probe(struct platform_device
*pdev
)
1882 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1885 * no card, so machine driver should be registering card
1886 * we should not be here in that case so ret error
1891 dev_warn(&pdev
->dev
,
1892 "ASoC: machine %s should use snd_soc_register_card()\n",
1895 /* Bodge while we unpick instantiation */
1896 card
->dev
= &pdev
->dev
;
1898 return snd_soc_register_card(card
);
1901 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1905 /* make sure any delayed work runs */
1906 for (i
= 0; i
< card
->num_rtd
; i
++) {
1907 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1908 flush_delayed_work(&rtd
->delayed_work
);
1911 /* remove auxiliary devices */
1912 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1913 soc_remove_aux_dev(card
, i
);
1915 /* remove and free each DAI */
1916 soc_remove_dai_links(card
);
1918 soc_cleanup_card_debugfs(card
);
1920 /* remove the card */
1924 snd_soc_dapm_free(&card
->dapm
);
1926 snd_card_free(card
->snd_card
);
1931 /* removes a socdev */
1932 static int soc_remove(struct platform_device
*pdev
)
1934 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1936 snd_soc_unregister_card(card
);
1940 int snd_soc_poweroff(struct device
*dev
)
1942 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1945 if (!card
->instantiated
)
1948 /* Flush out pmdown_time work - we actually do want to run it
1949 * now, we're shutting down so no imminent restart. */
1950 for (i
= 0; i
< card
->num_rtd
; i
++) {
1951 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1952 flush_delayed_work(&rtd
->delayed_work
);
1955 snd_soc_dapm_shutdown(card
);
1957 /* deactivate pins to sleep state */
1958 for (i
= 0; i
< card
->num_rtd
; i
++) {
1959 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
1960 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
1961 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
1962 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
1967 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1969 const struct dev_pm_ops snd_soc_pm_ops
= {
1970 .suspend
= snd_soc_suspend
,
1971 .resume
= snd_soc_resume
,
1972 .freeze
= snd_soc_suspend
,
1973 .thaw
= snd_soc_resume
,
1974 .poweroff
= snd_soc_poweroff
,
1975 .restore
= snd_soc_resume
,
1977 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1979 /* ASoC platform driver */
1980 static struct platform_driver soc_driver
= {
1982 .name
= "soc-audio",
1983 .owner
= THIS_MODULE
,
1984 .pm
= &snd_soc_pm_ops
,
1987 .remove
= soc_remove
,
1991 * snd_soc_new_ac97_codec - initailise AC97 device
1992 * @codec: audio codec
1993 * @ops: AC97 bus operations
1994 * @num: AC97 codec number
1996 * Initialises AC97 codec resources for use by ad-hoc devices only.
1998 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1999 struct snd_ac97_bus_ops
*ops
, int num
)
2001 mutex_lock(&codec
->mutex
);
2003 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2004 if (codec
->ac97
== NULL
) {
2005 mutex_unlock(&codec
->mutex
);
2009 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2010 if (codec
->ac97
->bus
== NULL
) {
2013 mutex_unlock(&codec
->mutex
);
2017 codec
->ac97
->bus
->ops
= ops
;
2018 codec
->ac97
->num
= num
;
2021 * Mark the AC97 device to be created by us. This way we ensure that the
2022 * device will be registered with the device subsystem later on.
2024 codec
->ac97_created
= 1;
2026 mutex_unlock(&codec
->mutex
);
2029 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2031 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg
;
2033 static void snd_soc_ac97_warm_reset(struct snd_ac97
*ac97
)
2035 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2037 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_warm_reset
);
2039 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 1);
2043 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2045 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2049 static void snd_soc_ac97_reset(struct snd_ac97
*ac97
)
2051 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2053 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_reset
);
2055 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2056 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sdata
, 0);
2057 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 0);
2061 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 1);
2063 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2067 static int snd_soc_ac97_parse_pinctl(struct device
*dev
,
2068 struct snd_ac97_reset_cfg
*cfg
)
2071 struct pinctrl_state
*state
;
2075 p
= devm_pinctrl_get(dev
);
2077 dev_err(dev
, "Failed to get pinctrl\n");
2082 state
= pinctrl_lookup_state(p
, "ac97-reset");
2083 if (IS_ERR(state
)) {
2084 dev_err(dev
, "Can't find pinctrl state ac97-reset\n");
2085 return PTR_ERR(state
);
2087 cfg
->pstate_reset
= state
;
2089 state
= pinctrl_lookup_state(p
, "ac97-warm-reset");
2090 if (IS_ERR(state
)) {
2091 dev_err(dev
, "Can't find pinctrl state ac97-warm-reset\n");
2092 return PTR_ERR(state
);
2094 cfg
->pstate_warm_reset
= state
;
2096 state
= pinctrl_lookup_state(p
, "ac97-running");
2097 if (IS_ERR(state
)) {
2098 dev_err(dev
, "Can't find pinctrl state ac97-running\n");
2099 return PTR_ERR(state
);
2101 cfg
->pstate_run
= state
;
2103 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 0);
2105 dev_err(dev
, "Can't find ac97-sync gpio\n");
2108 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sync");
2110 dev_err(dev
, "Failed requesting ac97-sync gpio\n");
2113 cfg
->gpio_sync
= gpio
;
2115 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 1);
2117 dev_err(dev
, "Can't find ac97-sdata gpio %d\n", gpio
);
2120 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sdata");
2122 dev_err(dev
, "Failed requesting ac97-sdata gpio\n");
2125 cfg
->gpio_sdata
= gpio
;
2127 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 2);
2129 dev_err(dev
, "Can't find ac97-reset gpio\n");
2132 ret
= devm_gpio_request(dev
, gpio
, "AC97 link reset");
2134 dev_err(dev
, "Failed requesting ac97-reset gpio\n");
2137 cfg
->gpio_reset
= gpio
;
2142 struct snd_ac97_bus_ops
*soc_ac97_ops
;
2143 EXPORT_SYMBOL_GPL(soc_ac97_ops
);
2145 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops
*ops
)
2147 if (ops
== soc_ac97_ops
)
2150 if (soc_ac97_ops
&& ops
)
2157 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops
);
2160 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2162 * This function sets the reset and warm_reset properties of ops and parses
2163 * the device node of pdev to get pinctrl states and gpio numbers to use.
2165 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops
*ops
,
2166 struct platform_device
*pdev
)
2168 struct device
*dev
= &pdev
->dev
;
2169 struct snd_ac97_reset_cfg cfg
;
2172 ret
= snd_soc_ac97_parse_pinctl(dev
, &cfg
);
2176 ret
= snd_soc_set_ac97_ops(ops
);
2180 ops
->warm_reset
= snd_soc_ac97_warm_reset
;
2181 ops
->reset
= snd_soc_ac97_reset
;
2183 snd_ac97_rst_cfg
= cfg
;
2186 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset
);
2189 * snd_soc_free_ac97_codec - free AC97 codec device
2190 * @codec: audio codec
2192 * Frees AC97 codec device resources.
2194 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2196 mutex_lock(&codec
->mutex
);
2197 #ifdef CONFIG_SND_SOC_AC97_BUS
2198 soc_unregister_ac97_dai_link(codec
);
2200 kfree(codec
->ac97
->bus
);
2203 codec
->ac97_created
= 0;
2204 mutex_unlock(&codec
->mutex
);
2206 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2209 * snd_soc_cnew - create new control
2210 * @_template: control template
2211 * @data: control private data
2212 * @long_name: control long name
2213 * @prefix: control name prefix
2215 * Create a new mixer control from a template control.
2217 * Returns 0 for success, else error.
2219 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2220 void *data
, const char *long_name
,
2223 struct snd_kcontrol_new
template;
2224 struct snd_kcontrol
*kcontrol
;
2227 memcpy(&template, _template
, sizeof(template));
2231 long_name
= template.name
;
2234 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2238 template.name
= name
;
2240 template.name
= long_name
;
2243 kcontrol
= snd_ctl_new1(&template, data
);
2249 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2251 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2252 const struct snd_kcontrol_new
*controls
, int num_controls
,
2253 const char *prefix
, void *data
)
2257 for (i
= 0; i
< num_controls
; i
++) {
2258 const struct snd_kcontrol_new
*control
= &controls
[i
];
2259 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2260 control
->name
, prefix
));
2262 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2263 control
->name
, err
);
2271 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2274 struct snd_card
*card
= soc_card
->snd_card
;
2275 struct snd_kcontrol
*kctl
;
2277 if (unlikely(!name
))
2280 list_for_each_entry(kctl
, &card
->controls
, list
)
2281 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2285 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2288 * snd_soc_add_codec_controls - add an array of controls to a codec.
2289 * Convenience function to add a list of controls. Many codecs were
2290 * duplicating this code.
2292 * @codec: codec to add controls to
2293 * @controls: array of controls to add
2294 * @num_controls: number of elements in the array
2296 * Return 0 for success, else error.
2298 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2299 const struct snd_kcontrol_new
*controls
, int num_controls
)
2301 struct snd_card
*card
= codec
->card
->snd_card
;
2303 return snd_soc_add_controls(card
, codec
->dev
, controls
, num_controls
,
2304 codec
->name_prefix
, codec
);
2306 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2309 * snd_soc_add_platform_controls - add an array of controls to a platform.
2310 * Convenience function to add a list of controls.
2312 * @platform: platform to add controls to
2313 * @controls: array of controls to add
2314 * @num_controls: number of elements in the array
2316 * Return 0 for success, else error.
2318 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2319 const struct snd_kcontrol_new
*controls
, int num_controls
)
2321 struct snd_card
*card
= platform
->card
->snd_card
;
2323 return snd_soc_add_controls(card
, platform
->dev
, controls
, num_controls
,
2326 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2329 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2330 * Convenience function to add a list of controls.
2332 * @soc_card: SoC card to add controls to
2333 * @controls: array of controls to add
2334 * @num_controls: number of elements in the array
2336 * Return 0 for success, else error.
2338 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2339 const struct snd_kcontrol_new
*controls
, int num_controls
)
2341 struct snd_card
*card
= soc_card
->snd_card
;
2343 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2346 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2349 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2350 * Convienience function to add a list of controls.
2352 * @dai: DAI to add controls to
2353 * @controls: array of controls to add
2354 * @num_controls: number of elements in the array
2356 * Return 0 for success, else error.
2358 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2359 const struct snd_kcontrol_new
*controls
, int num_controls
)
2361 struct snd_card
*card
= dai
->card
->snd_card
;
2363 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2366 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2369 * snd_soc_info_enum_double - enumerated double mixer info callback
2370 * @kcontrol: mixer control
2371 * @uinfo: control element information
2373 * Callback to provide information about a double enumerated
2376 * Returns 0 for success.
2378 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2379 struct snd_ctl_elem_info
*uinfo
)
2381 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2383 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2384 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2385 uinfo
->value
.enumerated
.items
= e
->items
;
2387 if (uinfo
->value
.enumerated
.item
>= e
->items
)
2388 uinfo
->value
.enumerated
.item
= e
->items
- 1;
2389 strlcpy(uinfo
->value
.enumerated
.name
,
2390 e
->texts
[uinfo
->value
.enumerated
.item
],
2391 sizeof(uinfo
->value
.enumerated
.name
));
2394 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2397 * snd_soc_get_enum_double - enumerated double mixer get callback
2398 * @kcontrol: mixer control
2399 * @ucontrol: control element information
2401 * Callback to get the value of a double enumerated mixer.
2403 * Returns 0 for success.
2405 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2406 struct snd_ctl_elem_value
*ucontrol
)
2408 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2409 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2410 unsigned int val
, item
;
2411 unsigned int reg_val
;
2413 reg_val
= snd_soc_read(codec
, e
->reg
);
2414 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2415 item
= snd_soc_enum_val_to_item(e
, val
);
2416 ucontrol
->value
.enumerated
.item
[0] = item
;
2417 if (e
->shift_l
!= e
->shift_r
) {
2418 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2419 item
= snd_soc_enum_val_to_item(e
, val
);
2420 ucontrol
->value
.enumerated
.item
[1] = item
;
2425 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2428 * snd_soc_put_enum_double - enumerated double mixer put callback
2429 * @kcontrol: mixer control
2430 * @ucontrol: control element information
2432 * Callback to set the value of a double enumerated mixer.
2434 * Returns 0 for success.
2436 int snd_soc_put_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
;
2441 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
2445 if (item
[0] >= e
->items
)
2447 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
2448 mask
= e
->mask
<< e
->shift_l
;
2449 if (e
->shift_l
!= e
->shift_r
) {
2450 if (item
[1] >= e
->items
)
2452 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_r
;
2453 mask
|= e
->mask
<< e
->shift_r
;
2456 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2458 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2461 * snd_soc_read_signed - Read a codec register and interprete as signed value
2463 * @reg: Register to read
2464 * @mask: Mask to use after shifting the register value
2465 * @shift: Right shift of register value
2466 * @sign_bit: Bit that describes if a number is negative or not.
2468 * This functions reads a codec register. The register value is shifted right
2469 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2470 * the given registervalue into a signed integer if sign_bit is non-zero.
2472 * Returns the register value as signed int.
2474 static int snd_soc_read_signed(struct snd_soc_codec
*codec
, unsigned int reg
,
2475 unsigned int mask
, unsigned int shift
, unsigned int sign_bit
)
2480 val
= (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2485 /* non-negative number */
2486 if (!(val
& BIT(sign_bit
)))
2492 * The register most probably does not contain a full-sized int.
2493 * Instead we have an arbitrary number of bits in a signed
2494 * representation which has to be translated into a full-sized int.
2495 * This is done by filling up all bits above the sign-bit.
2497 ret
|= ~((int)(BIT(sign_bit
) - 1));
2503 * snd_soc_info_volsw - single mixer info callback
2504 * @kcontrol: mixer control
2505 * @uinfo: control element information
2507 * Callback to provide information about a single mixer control, or a double
2508 * mixer control that spans 2 registers.
2510 * Returns 0 for success.
2512 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2513 struct snd_ctl_elem_info
*uinfo
)
2515 struct soc_mixer_control
*mc
=
2516 (struct soc_mixer_control
*)kcontrol
->private_value
;
2519 if (!mc
->platform_max
)
2520 mc
->platform_max
= mc
->max
;
2521 platform_max
= mc
->platform_max
;
2523 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2524 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2526 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2528 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2529 uinfo
->value
.integer
.min
= 0;
2530 uinfo
->value
.integer
.max
= platform_max
- mc
->min
;
2533 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2536 * snd_soc_get_volsw - single mixer get callback
2537 * @kcontrol: mixer control
2538 * @ucontrol: control element information
2540 * Callback to get the value of a single mixer control, or a double mixer
2541 * control that spans 2 registers.
2543 * Returns 0 for success.
2545 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2546 struct snd_ctl_elem_value
*ucontrol
)
2548 struct soc_mixer_control
*mc
=
2549 (struct soc_mixer_control
*)kcontrol
->private_value
;
2550 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2551 unsigned int reg
= mc
->reg
;
2552 unsigned int reg2
= mc
->rreg
;
2553 unsigned int shift
= mc
->shift
;
2554 unsigned int rshift
= mc
->rshift
;
2557 int sign_bit
= mc
->sign_bit
;
2558 unsigned int mask
= (1 << fls(max
)) - 1;
2559 unsigned int invert
= mc
->invert
;
2562 mask
= BIT(sign_bit
+ 1) - 1;
2564 ucontrol
->value
.integer
.value
[0] = snd_soc_read_signed(codec
, reg
, mask
,
2565 shift
, sign_bit
) - min
;
2567 ucontrol
->value
.integer
.value
[0] =
2568 max
- ucontrol
->value
.integer
.value
[0];
2570 if (snd_soc_volsw_is_stereo(mc
)) {
2572 ucontrol
->value
.integer
.value
[1] =
2573 snd_soc_read_signed(codec
, reg
, mask
, rshift
,
2576 ucontrol
->value
.integer
.value
[1] =
2577 snd_soc_read_signed(codec
, reg2
, mask
, shift
,
2580 ucontrol
->value
.integer
.value
[1] =
2581 max
- ucontrol
->value
.integer
.value
[1];
2586 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2589 * snd_soc_put_volsw - single mixer put callback
2590 * @kcontrol: mixer control
2591 * @ucontrol: control element information
2593 * Callback to set the value of a single mixer control, or a double mixer
2594 * control that spans 2 registers.
2596 * Returns 0 for success.
2598 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2599 struct snd_ctl_elem_value
*ucontrol
)
2601 struct soc_mixer_control
*mc
=
2602 (struct soc_mixer_control
*)kcontrol
->private_value
;
2603 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2604 unsigned int reg
= mc
->reg
;
2605 unsigned int reg2
= mc
->rreg
;
2606 unsigned int shift
= mc
->shift
;
2607 unsigned int rshift
= mc
->rshift
;
2610 unsigned int sign_bit
= mc
->sign_bit
;
2611 unsigned int mask
= (1 << fls(max
)) - 1;
2612 unsigned int invert
= mc
->invert
;
2614 bool type_2r
= false;
2615 unsigned int val2
= 0;
2616 unsigned int val
, val_mask
;
2619 mask
= BIT(sign_bit
+ 1) - 1;
2621 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
2624 val_mask
= mask
<< shift
;
2626 if (snd_soc_volsw_is_stereo(mc
)) {
2627 val2
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
2631 val_mask
|= mask
<< rshift
;
2632 val
|= val2
<< rshift
;
2634 val2
= val2
<< shift
;
2638 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2643 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2647 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2650 * snd_soc_get_volsw_sx - single mixer get callback
2651 * @kcontrol: mixer control
2652 * @ucontrol: control element information
2654 * Callback to get the value of a single mixer control, or a double mixer
2655 * control that spans 2 registers.
2657 * Returns 0 for success.
2659 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2660 struct snd_ctl_elem_value
*ucontrol
)
2662 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2663 struct soc_mixer_control
*mc
=
2664 (struct soc_mixer_control
*)kcontrol
->private_value
;
2666 unsigned int reg
= mc
->reg
;
2667 unsigned int reg2
= mc
->rreg
;
2668 unsigned int shift
= mc
->shift
;
2669 unsigned int rshift
= mc
->rshift
;
2672 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2674 ucontrol
->value
.integer
.value
[0] =
2675 ((snd_soc_read(codec
, reg
) >> shift
) - min
) & mask
;
2677 if (snd_soc_volsw_is_stereo(mc
))
2678 ucontrol
->value
.integer
.value
[1] =
2679 ((snd_soc_read(codec
, reg2
) >> rshift
) - min
) & mask
;
2683 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2686 * snd_soc_put_volsw_sx - double mixer set callback
2687 * @kcontrol: mixer control
2688 * @uinfo: control element information
2690 * Callback to set the value of a double mixer control that spans 2 registers.
2692 * Returns 0 for success.
2694 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2695 struct snd_ctl_elem_value
*ucontrol
)
2697 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2698 struct soc_mixer_control
*mc
=
2699 (struct soc_mixer_control
*)kcontrol
->private_value
;
2701 unsigned int reg
= mc
->reg
;
2702 unsigned int reg2
= mc
->rreg
;
2703 unsigned int shift
= mc
->shift
;
2704 unsigned int rshift
= mc
->rshift
;
2707 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2709 unsigned int val
, val_mask
, val2
= 0;
2711 val_mask
= mask
<< shift
;
2712 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2715 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2719 if (snd_soc_volsw_is_stereo(mc
)) {
2720 val_mask
= mask
<< rshift
;
2721 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2722 val2
= val2
<< rshift
;
2724 if (snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
))
2729 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2732 * snd_soc_info_volsw_s8 - signed mixer info callback
2733 * @kcontrol: mixer control
2734 * @uinfo: control element information
2736 * Callback to provide information about a signed mixer control.
2738 * Returns 0 for success.
2740 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2741 struct snd_ctl_elem_info
*uinfo
)
2743 struct soc_mixer_control
*mc
=
2744 (struct soc_mixer_control
*)kcontrol
->private_value
;
2748 if (!mc
->platform_max
)
2749 mc
->platform_max
= mc
->max
;
2750 platform_max
= mc
->platform_max
;
2752 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2754 uinfo
->value
.integer
.min
= 0;
2755 uinfo
->value
.integer
.max
= platform_max
- min
;
2758 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2761 * snd_soc_get_volsw_s8 - signed mixer get callback
2762 * @kcontrol: mixer control
2763 * @ucontrol: control element information
2765 * Callback to get the value of a signed mixer control.
2767 * Returns 0 for success.
2769 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2770 struct snd_ctl_elem_value
*ucontrol
)
2772 struct soc_mixer_control
*mc
=
2773 (struct soc_mixer_control
*)kcontrol
->private_value
;
2774 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2775 unsigned int reg
= mc
->reg
;
2777 int val
= snd_soc_read(codec
, reg
);
2779 ucontrol
->value
.integer
.value
[0] =
2780 ((signed char)(val
& 0xff))-min
;
2781 ucontrol
->value
.integer
.value
[1] =
2782 ((signed char)((val
>> 8) & 0xff))-min
;
2785 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2788 * snd_soc_put_volsw_sgn - signed mixer put callback
2789 * @kcontrol: mixer control
2790 * @ucontrol: control element information
2792 * Callback to set the value of a signed mixer control.
2794 * Returns 0 for success.
2796 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2797 struct snd_ctl_elem_value
*ucontrol
)
2799 struct soc_mixer_control
*mc
=
2800 (struct soc_mixer_control
*)kcontrol
->private_value
;
2801 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2802 unsigned int reg
= mc
->reg
;
2806 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2807 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2809 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2811 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2814 * snd_soc_info_volsw_range - single mixer info callback with range.
2815 * @kcontrol: mixer control
2816 * @uinfo: control element information
2818 * Callback to provide information, within a range, about a single
2821 * returns 0 for success.
2823 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
2824 struct snd_ctl_elem_info
*uinfo
)
2826 struct soc_mixer_control
*mc
=
2827 (struct soc_mixer_control
*)kcontrol
->private_value
;
2831 if (!mc
->platform_max
)
2832 mc
->platform_max
= mc
->max
;
2833 platform_max
= mc
->platform_max
;
2835 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2836 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2837 uinfo
->value
.integer
.min
= 0;
2838 uinfo
->value
.integer
.max
= platform_max
- min
;
2842 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
2845 * snd_soc_put_volsw_range - single mixer put value callback with range.
2846 * @kcontrol: mixer control
2847 * @ucontrol: control element information
2849 * Callback to set the value, within a range, for a single mixer control.
2851 * Returns 0 for success.
2853 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
2854 struct snd_ctl_elem_value
*ucontrol
)
2856 struct soc_mixer_control
*mc
=
2857 (struct soc_mixer_control
*)kcontrol
->private_value
;
2858 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2859 unsigned int reg
= mc
->reg
;
2860 unsigned int rreg
= mc
->rreg
;
2861 unsigned int shift
= mc
->shift
;
2864 unsigned int mask
= (1 << fls(max
)) - 1;
2865 unsigned int invert
= mc
->invert
;
2866 unsigned int val
, val_mask
;
2869 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
2872 val_mask
= mask
<< shift
;
2875 ret
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2879 if (snd_soc_volsw_is_stereo(mc
)) {
2880 val
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
2883 val_mask
= mask
<< shift
;
2886 ret
= snd_soc_update_bits_locked(codec
, rreg
, val_mask
, val
);
2891 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
2894 * snd_soc_get_volsw_range - single mixer get callback with range
2895 * @kcontrol: mixer control
2896 * @ucontrol: control element information
2898 * Callback to get the value, within a range, of a single mixer control.
2900 * Returns 0 for success.
2902 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
2903 struct snd_ctl_elem_value
*ucontrol
)
2905 struct soc_mixer_control
*mc
=
2906 (struct soc_mixer_control
*)kcontrol
->private_value
;
2907 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2908 unsigned int reg
= mc
->reg
;
2909 unsigned int rreg
= mc
->rreg
;
2910 unsigned int shift
= mc
->shift
;
2913 unsigned int mask
= (1 << fls(max
)) - 1;
2914 unsigned int invert
= mc
->invert
;
2916 ucontrol
->value
.integer
.value
[0] =
2917 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2919 ucontrol
->value
.integer
.value
[0] =
2920 max
- ucontrol
->value
.integer
.value
[0];
2921 ucontrol
->value
.integer
.value
[0] =
2922 ucontrol
->value
.integer
.value
[0] - min
;
2924 if (snd_soc_volsw_is_stereo(mc
)) {
2925 ucontrol
->value
.integer
.value
[1] =
2926 (snd_soc_read(codec
, rreg
) >> shift
) & mask
;
2928 ucontrol
->value
.integer
.value
[1] =
2929 max
- ucontrol
->value
.integer
.value
[1];
2930 ucontrol
->value
.integer
.value
[1] =
2931 ucontrol
->value
.integer
.value
[1] - min
;
2936 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
2939 * snd_soc_limit_volume - Set new limit to an existing volume control.
2941 * @codec: where to look for the control
2942 * @name: Name of the control
2943 * @max: new maximum limit
2945 * Return 0 for success, else error.
2947 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2948 const char *name
, int max
)
2950 struct snd_card
*card
= codec
->card
->snd_card
;
2951 struct snd_kcontrol
*kctl
;
2952 struct soc_mixer_control
*mc
;
2956 /* Sanity check for name and max */
2957 if (unlikely(!name
|| max
<= 0))
2960 list_for_each_entry(kctl
, &card
->controls
, list
) {
2961 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2967 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2968 if (max
<= mc
->max
) {
2969 mc
->platform_max
= max
;
2975 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2977 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
2978 struct snd_ctl_elem_info
*uinfo
)
2980 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2981 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2983 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
2984 uinfo
->count
= params
->num_regs
* codec
->val_bytes
;
2988 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
2990 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
2991 struct snd_ctl_elem_value
*ucontrol
)
2993 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
2994 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2997 if (codec
->using_regmap
)
2998 ret
= regmap_raw_read(codec
->control_data
, params
->base
,
2999 ucontrol
->value
.bytes
.data
,
3000 params
->num_regs
* codec
->val_bytes
);
3004 /* Hide any masked bytes to ensure consistent data reporting */
3005 if (ret
== 0 && params
->mask
) {
3006 switch (codec
->val_bytes
) {
3008 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
3011 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
3012 &= cpu_to_be16(~params
->mask
);
3015 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
3016 &= cpu_to_be32(~params
->mask
);
3025 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
3027 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
3028 struct snd_ctl_elem_value
*ucontrol
)
3030 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3031 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3033 unsigned int val
, mask
;
3036 if (!codec
->using_regmap
)
3039 len
= params
->num_regs
* codec
->val_bytes
;
3041 data
= kmemdup(ucontrol
->value
.bytes
.data
, len
, GFP_KERNEL
| GFP_DMA
);
3046 * If we've got a mask then we need to preserve the register
3047 * bits. We shouldn't modify the incoming data so take a
3051 ret
= regmap_read(codec
->control_data
, params
->base
, &val
);
3055 val
&= params
->mask
;
3057 switch (codec
->val_bytes
) {
3059 ((u8
*)data
)[0] &= ~params
->mask
;
3060 ((u8
*)data
)[0] |= val
;
3063 mask
= ~params
->mask
;
3064 ret
= regmap_parse_val(codec
->control_data
,
3069 ((u16
*)data
)[0] &= mask
;
3071 ret
= regmap_parse_val(codec
->control_data
,
3076 ((u16
*)data
)[0] |= val
;
3079 mask
= ~params
->mask
;
3080 ret
= regmap_parse_val(codec
->control_data
,
3085 ((u32
*)data
)[0] &= mask
;
3087 ret
= regmap_parse_val(codec
->control_data
,
3092 ((u32
*)data
)[0] |= val
;
3100 ret
= regmap_raw_write(codec
->control_data
, params
->base
,
3108 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
3111 * snd_soc_info_xr_sx - signed multi register info callback
3112 * @kcontrol: mreg control
3113 * @uinfo: control element information
3115 * Callback to provide information of a control that can
3116 * span multiple codec registers which together
3117 * forms a single signed value in a MSB/LSB manner.
3119 * Returns 0 for success.
3121 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
3122 struct snd_ctl_elem_info
*uinfo
)
3124 struct soc_mreg_control
*mc
=
3125 (struct soc_mreg_control
*)kcontrol
->private_value
;
3126 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3128 uinfo
->value
.integer
.min
= mc
->min
;
3129 uinfo
->value
.integer
.max
= mc
->max
;
3133 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
3136 * snd_soc_get_xr_sx - signed multi register get callback
3137 * @kcontrol: mreg control
3138 * @ucontrol: control element information
3140 * Callback to get the value of a control that can span
3141 * multiple codec registers which together forms a single
3142 * signed value in a MSB/LSB manner. The control supports
3143 * specifying total no of bits used to allow for bitfields
3144 * across the multiple codec registers.
3146 * Returns 0 for success.
3148 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
3149 struct snd_ctl_elem_value
*ucontrol
)
3151 struct soc_mreg_control
*mc
=
3152 (struct soc_mreg_control
*)kcontrol
->private_value
;
3153 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3154 unsigned int regbase
= mc
->regbase
;
3155 unsigned int regcount
= mc
->regcount
;
3156 unsigned int regwshift
= codec
->val_bytes
* BITS_PER_BYTE
;
3157 unsigned int regwmask
= (1<<regwshift
)-1;
3158 unsigned int invert
= mc
->invert
;
3159 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3163 unsigned long regval
;
3166 for (i
= 0; i
< regcount
; i
++) {
3167 regval
= snd_soc_read(codec
, regbase
+i
) & regwmask
;
3168 val
|= regval
<< (regwshift
*(regcount
-i
-1));
3171 if (min
< 0 && val
> max
)
3175 ucontrol
->value
.integer
.value
[0] = val
;
3179 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3182 * snd_soc_put_xr_sx - signed multi register get callback
3183 * @kcontrol: mreg control
3184 * @ucontrol: control element information
3186 * Callback to set the value of a control that can span
3187 * multiple codec registers which together forms a single
3188 * signed value in a MSB/LSB manner. The control supports
3189 * specifying total no of bits used to allow for bitfields
3190 * across the multiple codec registers.
3192 * Returns 0 for success.
3194 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3195 struct snd_ctl_elem_value
*ucontrol
)
3197 struct soc_mreg_control
*mc
=
3198 (struct soc_mreg_control
*)kcontrol
->private_value
;
3199 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3200 unsigned int regbase
= mc
->regbase
;
3201 unsigned int regcount
= mc
->regcount
;
3202 unsigned int regwshift
= codec
->val_bytes
* BITS_PER_BYTE
;
3203 unsigned int regwmask
= (1<<regwshift
)-1;
3204 unsigned int invert
= mc
->invert
;
3205 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3207 long val
= ucontrol
->value
.integer
.value
[0];
3208 unsigned int i
, regval
, regmask
;
3214 for (i
= 0; i
< regcount
; i
++) {
3215 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3216 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3217 err
= snd_soc_update_bits_locked(codec
, regbase
+i
,
3225 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3228 * snd_soc_get_strobe - strobe get callback
3229 * @kcontrol: mixer control
3230 * @ucontrol: control element information
3232 * Callback get the value of a strobe mixer control.
3234 * Returns 0 for success.
3236 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3237 struct snd_ctl_elem_value
*ucontrol
)
3239 struct soc_mixer_control
*mc
=
3240 (struct soc_mixer_control
*)kcontrol
->private_value
;
3241 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3242 unsigned int reg
= mc
->reg
;
3243 unsigned int shift
= mc
->shift
;
3244 unsigned int mask
= 1 << shift
;
3245 unsigned int invert
= mc
->invert
!= 0;
3246 unsigned int val
= snd_soc_read(codec
, reg
) & mask
;
3248 if (shift
!= 0 && val
!= 0)
3250 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3254 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3257 * snd_soc_put_strobe - strobe put callback
3258 * @kcontrol: mixer control
3259 * @ucontrol: control element information
3261 * Callback strobe a register bit to high then low (or the inverse)
3262 * in one pass of a single mixer enum control.
3264 * Returns 1 for success.
3266 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3267 struct snd_ctl_elem_value
*ucontrol
)
3269 struct soc_mixer_control
*mc
=
3270 (struct soc_mixer_control
*)kcontrol
->private_value
;
3271 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
3272 unsigned int reg
= mc
->reg
;
3273 unsigned int shift
= mc
->shift
;
3274 unsigned int mask
= 1 << shift
;
3275 unsigned int invert
= mc
->invert
!= 0;
3276 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3277 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3278 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3281 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val1
);
3285 err
= snd_soc_update_bits_locked(codec
, reg
, mask
, val2
);
3288 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3291 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3293 * @clk_id: DAI specific clock ID
3294 * @freq: new clock frequency in Hz
3295 * @dir: new clock direction - input/output.
3297 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3299 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3300 unsigned int freq
, int dir
)
3302 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3303 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3304 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3305 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3310 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3313 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3315 * @clk_id: DAI specific clock ID
3316 * @source: Source for the clock
3317 * @freq: new clock frequency in Hz
3318 * @dir: new clock direction - input/output.
3320 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3322 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3323 int source
, unsigned int freq
, int dir
)
3325 if (codec
->driver
->set_sysclk
)
3326 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3331 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3334 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3336 * @div_id: DAI specific clock divider ID
3337 * @div: new clock divisor.
3339 * Configures the clock dividers. This is used to derive the best DAI bit and
3340 * frame clocks from the system or master clock. It's best to set the DAI bit
3341 * and frame clocks as low as possible to save system power.
3343 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3344 int div_id
, int div
)
3346 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3347 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3351 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3354 * snd_soc_dai_set_pll - configure DAI PLL.
3356 * @pll_id: DAI specific PLL ID
3357 * @source: DAI specific source for the PLL
3358 * @freq_in: PLL input clock frequency in Hz
3359 * @freq_out: requested PLL output clock frequency in Hz
3361 * Configures and enables PLL to generate output clock based on input clock.
3363 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3364 unsigned int freq_in
, unsigned int freq_out
)
3366 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3367 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3369 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3370 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3375 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3378 * snd_soc_codec_set_pll - configure codec PLL.
3380 * @pll_id: DAI specific PLL ID
3381 * @source: DAI specific source for the PLL
3382 * @freq_in: PLL input clock frequency in Hz
3383 * @freq_out: requested PLL output clock frequency in Hz
3385 * Configures and enables PLL to generate output clock based on input clock.
3387 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3388 unsigned int freq_in
, unsigned int freq_out
)
3390 if (codec
->driver
->set_pll
)
3391 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3396 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3399 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3401 * @ratio Ratio of BCLK to Sample rate.
3403 * Configures the DAI for a preset BCLK to sample rate ratio.
3405 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
3407 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
3408 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
3412 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
3415 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3417 * @fmt: SND_SOC_DAIFMT_ format value.
3419 * Configures the DAI hardware format and clocking.
3421 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3423 if (dai
->driver
== NULL
)
3425 if (dai
->driver
->ops
->set_fmt
== NULL
)
3427 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3429 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3432 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3433 * @slots: Number of slots in use.
3434 * @tx_mask: bitmask representing active TX slots.
3435 * @rx_mask: bitmask representing active RX slots.
3437 * Generates the TDM tx and rx slot default masks for DAI.
3439 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
3440 unsigned int *tx_mask
,
3441 unsigned int *rx_mask
)
3443 if (*tx_mask
|| *rx_mask
)
3449 *tx_mask
= (1 << slots
) - 1;
3450 *rx_mask
= (1 << slots
) - 1;
3456 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3458 * @tx_mask: bitmask representing active TX slots.
3459 * @rx_mask: bitmask representing active RX slots.
3460 * @slots: Number of slots in use.
3461 * @slot_width: Width in bits for each slot.
3463 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3466 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3467 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3469 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
3470 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
3471 &tx_mask
, &rx_mask
);
3473 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
3475 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3476 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3481 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3484 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3486 * @tx_num: how many TX channels
3487 * @tx_slot: pointer to an array which imply the TX slot number channel
3489 * @rx_num: how many RX channels
3490 * @rx_slot: pointer to an array which imply the RX slot number channel
3493 * configure the relationship between channel number and TDM slot number.
3495 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3496 unsigned int tx_num
, unsigned int *tx_slot
,
3497 unsigned int rx_num
, unsigned int *rx_slot
)
3499 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3500 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3505 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3508 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3510 * @tristate: tristate enable
3512 * Tristates the DAI so that others can use it.
3514 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3516 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3517 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3521 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3524 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3526 * @mute: mute enable
3527 * @direction: stream to mute
3529 * Mutes the DAI DAC.
3531 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
3537 if (dai
->driver
->ops
->mute_stream
)
3538 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
3539 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
3540 dai
->driver
->ops
->digital_mute
)
3541 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3545 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3548 * snd_soc_register_card - Register a card with the ASoC core
3550 * @card: Card to register
3553 int snd_soc_register_card(struct snd_soc_card
*card
)
3557 if (!card
->name
|| !card
->dev
)
3560 for (i
= 0; i
< card
->num_links
; i
++) {
3561 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3564 * Codec must be specified by 1 of name or OF node,
3565 * not both or neither.
3567 if (!!link
->codec_name
== !!link
->codec_of_node
) {
3569 "ASoC: Neither/both codec name/of_node are set for %s\n",
3573 /* Codec DAI name must be specified */
3574 if (!link
->codec_dai_name
) {
3576 "ASoC: codec_dai_name not set for %s\n",
3582 * Platform may be specified by either name or OF node, but
3583 * can be left unspecified, and a dummy platform will be used.
3585 if (link
->platform_name
&& link
->platform_of_node
) {
3587 "ASoC: Both platform name/of_node are set for %s\n",
3593 * CPU device may be specified by either name or OF node, but
3594 * can be left unspecified, and will be matched based on DAI
3597 if (link
->cpu_name
&& link
->cpu_of_node
) {
3599 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3604 * At least one of CPU DAI name or CPU device name/node must be
3607 if (!link
->cpu_dai_name
&&
3608 !(link
->cpu_name
|| link
->cpu_of_node
)) {
3610 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3616 dev_set_drvdata(card
->dev
, card
);
3618 snd_soc_initialize_card_lists(card
);
3620 soc_init_card_debugfs(card
);
3622 card
->rtd
= devm_kzalloc(card
->dev
,
3623 sizeof(struct snd_soc_pcm_runtime
) *
3624 (card
->num_links
+ card
->num_aux_devs
),
3626 if (card
->rtd
== NULL
)
3629 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3631 for (i
= 0; i
< card
->num_links
; i
++)
3632 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3634 INIT_LIST_HEAD(&card
->list
);
3635 INIT_LIST_HEAD(&card
->dapm_dirty
);
3636 card
->instantiated
= 0;
3637 mutex_init(&card
->mutex
);
3638 mutex_init(&card
->dapm_mutex
);
3640 ret
= snd_soc_instantiate_card(card
);
3642 soc_cleanup_card_debugfs(card
);
3644 /* deactivate pins to sleep state */
3645 for (i
= 0; i
< card
->num_rtd
; i
++) {
3646 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
3647 struct snd_soc_dai
*codec_dai
= card
->rtd
[i
].codec_dai
;
3648 if (!codec_dai
->active
)
3649 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
3650 if (!cpu_dai
->active
)
3651 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
3656 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3659 * snd_soc_unregister_card - Unregister a card with the ASoC core
3661 * @card: Card to unregister
3664 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3666 if (card
->instantiated
)
3667 soc_cleanup_card_resources(card
);
3668 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3672 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3675 * Simplify DAI link configuration by removing ".-1" from device names
3676 * and sanitizing names.
3678 static char *fmt_single_name(struct device
*dev
, int *id
)
3680 char *found
, name
[NAME_SIZE
];
3683 if (dev_name(dev
) == NULL
)
3686 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3688 /* are we a "%s.%d" name (platform and SPI components) */
3689 found
= strstr(name
, dev
->driver
->name
);
3692 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3694 /* discard ID from name if ID == -1 */
3696 found
[strlen(dev
->driver
->name
)] = '\0';
3700 /* I2C component devices are named "bus-addr" */
3701 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3702 char tmp
[NAME_SIZE
];
3704 /* create unique ID number from I2C addr and bus */
3705 *id
= ((id1
& 0xffff) << 16) + id2
;
3707 /* sanitize component name for DAI link creation */
3708 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3709 strlcpy(name
, tmp
, NAME_SIZE
);
3714 return kstrdup(name
, GFP_KERNEL
);
3718 * Simplify DAI link naming for single devices with multiple DAIs by removing
3719 * any ".-1" and using the DAI name (instead of device name).
3721 static inline char *fmt_multiple_name(struct device
*dev
,
3722 struct snd_soc_dai_driver
*dai_drv
)
3724 if (dai_drv
->name
== NULL
) {
3726 "ASoC: error - multiple DAI %s registered with no name\n",
3731 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
3735 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
3737 * @component: The component for which the DAIs should be unregistered
3739 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
3741 struct snd_soc_dai
*dai
, *_dai
;
3743 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
3744 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
3746 list_del(&dai
->list
);
3753 * snd_soc_register_dais - Register a DAI with the ASoC core
3755 * @component: The component the DAIs are registered for
3756 * @codec: The CODEC that the DAIs are registered for, NULL if the component is
3758 * @dai_drv: DAI driver to use for the DAIs
3759 * @count: Number of DAIs
3760 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
3763 static int snd_soc_register_dais(struct snd_soc_component
*component
,
3764 struct snd_soc_codec
*codec
, struct snd_soc_dai_driver
*dai_drv
,
3765 size_t count
, bool legacy_dai_naming
)
3767 struct device
*dev
= component
->dev
;
3768 struct snd_soc_dai
*dai
;
3772 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
3774 for (i
= 0; i
< count
; i
++) {
3776 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3783 * Back in the old days when we still had component-less DAIs,
3784 * instead of having a static name, component-less DAIs would
3785 * inherit the name of the parent device so it is possible to
3786 * register multiple instances of the DAI. We still need to keep
3787 * the same naming style even though those DAIs are not
3788 * component-less anymore.
3790 if (count
== 1 && legacy_dai_naming
) {
3791 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3793 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3795 dai
->id
= dai_drv
[i
].id
;
3799 if (dai
->name
== NULL
) {
3805 dai
->component
= component
;
3808 dai
->driver
= &dai_drv
[i
];
3809 dai
->dapm
.dev
= dev
;
3810 if (!dai
->driver
->ops
)
3811 dai
->driver
->ops
= &null_dai_ops
;
3814 dai
->dapm
.idle_bias_off
= 1;
3816 list_add(&dai
->list
, &component
->dai_list
);
3818 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
3824 snd_soc_unregister_dais(component
);
3830 * snd_soc_register_component - Register a component with the ASoC core
3834 __snd_soc_register_component(struct device
*dev
,
3835 struct snd_soc_component
*cmpnt
,
3836 const struct snd_soc_component_driver
*cmpnt_drv
,
3837 struct snd_soc_codec
*codec
,
3838 struct snd_soc_dai_driver
*dai_drv
,
3839 int num_dai
, bool allow_single_dai
)
3843 dev_dbg(dev
, "component register %s\n", dev_name(dev
));
3846 dev_err(dev
, "ASoC: Failed to connecting component\n");
3850 cmpnt
->name
= fmt_single_name(dev
, &cmpnt
->id
);
3852 dev_err(dev
, "ASoC: Failed to simplifying name\n");
3857 cmpnt
->driver
= cmpnt_drv
;
3858 cmpnt
->dai_drv
= dai_drv
;
3859 cmpnt
->num_dai
= num_dai
;
3860 INIT_LIST_HEAD(&cmpnt
->dai_list
);
3862 ret
= snd_soc_register_dais(cmpnt
, codec
, dai_drv
, num_dai
,
3865 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
3866 goto error_component_name
;
3869 mutex_lock(&client_mutex
);
3870 list_add(&cmpnt
->list
, &component_list
);
3871 mutex_unlock(&client_mutex
);
3873 dev_dbg(cmpnt
->dev
, "ASoC: Registered component '%s'\n", cmpnt
->name
);
3877 error_component_name
:
3883 int snd_soc_register_component(struct device
*dev
,
3884 const struct snd_soc_component_driver
*cmpnt_drv
,
3885 struct snd_soc_dai_driver
*dai_drv
,
3888 struct snd_soc_component
*cmpnt
;
3890 cmpnt
= devm_kzalloc(dev
, sizeof(*cmpnt
), GFP_KERNEL
);
3892 dev_err(dev
, "ASoC: Failed to allocate memory\n");
3896 cmpnt
->ignore_pmdown_time
= true;
3897 cmpnt
->registered_as_component
= true;
3899 return __snd_soc_register_component(dev
, cmpnt
, cmpnt_drv
, NULL
,
3900 dai_drv
, num_dai
, true);
3902 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
3905 * snd_soc_unregister_component - Unregister a component from the ASoC core
3908 void snd_soc_unregister_component(struct device
*dev
)
3910 struct snd_soc_component
*cmpnt
;
3912 list_for_each_entry(cmpnt
, &component_list
, list
) {
3913 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
3919 snd_soc_unregister_dais(cmpnt
);
3921 mutex_lock(&client_mutex
);
3922 list_del(&cmpnt
->list
);
3923 mutex_unlock(&client_mutex
);
3925 dev_dbg(dev
, "ASoC: Unregistered component '%s'\n", cmpnt
->name
);
3928 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
3931 * snd_soc_add_platform - Add a platform to the ASoC core
3932 * @dev: The parent device for the platform
3933 * @platform: The platform to add
3934 * @platform_driver: The driver for the platform
3936 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
3937 const struct snd_soc_platform_driver
*platform_drv
)
3941 /* create platform component name */
3942 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3943 if (platform
->name
== NULL
)
3946 platform
->dev
= dev
;
3947 platform
->driver
= platform_drv
;
3948 platform
->dapm
.dev
= dev
;
3949 platform
->dapm
.platform
= platform
;
3950 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3951 mutex_init(&platform
->mutex
);
3953 /* register component */
3954 ret
= __snd_soc_register_component(dev
, &platform
->component
,
3955 &platform_drv
->component_driver
,
3956 NULL
, NULL
, 0, false);
3958 dev_err(platform
->component
.dev
,
3959 "ASoC: Failed to register component: %d\n", ret
);
3963 mutex_lock(&client_mutex
);
3964 list_add(&platform
->list
, &platform_list
);
3965 mutex_unlock(&client_mutex
);
3967 dev_dbg(dev
, "ASoC: Registered platform '%s'\n", platform
->name
);
3971 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
3974 * snd_soc_register_platform - Register a platform with the ASoC core
3976 * @platform: platform to register
3978 int snd_soc_register_platform(struct device
*dev
,
3979 const struct snd_soc_platform_driver
*platform_drv
)
3981 struct snd_soc_platform
*platform
;
3984 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
3986 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3987 if (platform
== NULL
)
3990 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
3996 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3999 * snd_soc_remove_platform - Remove a platform from the ASoC core
4000 * @platform: the platform to remove
4002 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
4004 snd_soc_unregister_component(platform
->dev
);
4006 mutex_lock(&client_mutex
);
4007 list_del(&platform
->list
);
4008 mutex_unlock(&client_mutex
);
4010 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
4012 kfree(platform
->name
);
4014 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
4016 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
4018 struct snd_soc_platform
*platform
;
4020 list_for_each_entry(platform
, &platform_list
, list
) {
4021 if (dev
== platform
->dev
)
4027 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
4030 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4032 * @platform: platform to unregister
4034 void snd_soc_unregister_platform(struct device
*dev
)
4036 struct snd_soc_platform
*platform
;
4038 platform
= snd_soc_lookup_platform(dev
);
4042 snd_soc_remove_platform(platform
);
4045 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
4047 static u64 codec_format_map
[] = {
4048 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
4049 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
4050 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
4051 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
4052 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
4053 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
4054 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4055 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4056 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
4057 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
4058 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
4059 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
4060 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
4061 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
4062 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4063 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
4066 /* Fix up the DAI formats for endianness: codecs don't actually see
4067 * the endianness of the data but we're using the CPU format
4068 * definitions which do need to include endianness so we ensure that
4069 * codec DAIs always have both big and little endian variants set.
4071 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
4075 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
4076 if (stream
->formats
& codec_format_map
[i
])
4077 stream
->formats
|= codec_format_map
[i
];
4081 * snd_soc_register_codec - Register a codec with the ASoC core
4083 * @codec: codec to register
4085 int snd_soc_register_codec(struct device
*dev
,
4086 const struct snd_soc_codec_driver
*codec_drv
,
4087 struct snd_soc_dai_driver
*dai_drv
,
4090 struct snd_soc_codec
*codec
;
4093 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
4095 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
4099 /* create CODEC component name */
4100 codec
->name
= fmt_single_name(dev
, &codec
->id
);
4101 if (codec
->name
== NULL
) {
4106 codec
->write
= codec_drv
->write
;
4107 codec
->read
= codec_drv
->read
;
4108 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
4109 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
4110 codec
->dapm
.dev
= dev
;
4111 codec
->dapm
.codec
= codec
;
4112 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
4113 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
4115 codec
->driver
= codec_drv
;
4116 codec
->num_dai
= num_dai
;
4117 codec
->val_bytes
= codec_drv
->reg_word_size
;
4118 mutex_init(&codec
->mutex
);
4120 for (i
= 0; i
< num_dai
; i
++) {
4121 fixup_codec_formats(&dai_drv
[i
].playback
);
4122 fixup_codec_formats(&dai_drv
[i
].capture
);
4125 mutex_lock(&client_mutex
);
4126 list_add(&codec
->list
, &codec_list
);
4127 mutex_unlock(&client_mutex
);
4129 /* register component */
4130 ret
= __snd_soc_register_component(dev
, &codec
->component
,
4131 &codec_drv
->component_driver
,
4132 codec
, dai_drv
, num_dai
, false);
4134 dev_err(codec
->dev
, "ASoC: Failed to regster component: %d\n", ret
);
4135 goto fail_codec_name
;
4138 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n", codec
->name
);
4142 mutex_lock(&client_mutex
);
4143 list_del(&codec
->list
);
4144 mutex_unlock(&client_mutex
);
4151 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
4154 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4156 * @codec: codec to unregister
4158 void snd_soc_unregister_codec(struct device
*dev
)
4160 struct snd_soc_codec
*codec
;
4162 list_for_each_entry(codec
, &codec_list
, list
) {
4163 if (dev
== codec
->dev
)
4169 snd_soc_unregister_component(dev
);
4171 mutex_lock(&client_mutex
);
4172 list_del(&codec
->list
);
4173 mutex_unlock(&client_mutex
);
4175 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n", codec
->name
);
4177 snd_soc_cache_exit(codec
);
4181 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
4183 /* Retrieve a card's name from device tree */
4184 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
4185 const char *propname
)
4187 struct device_node
*np
= card
->dev
->of_node
;
4190 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
4192 * EINVAL means the property does not exist. This is fine providing
4193 * card->name was previously set, which is checked later in
4194 * snd_soc_register_card.
4196 if (ret
< 0 && ret
!= -EINVAL
) {
4198 "ASoC: Property '%s' could not be read: %d\n",
4205 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
4207 static const struct snd_soc_dapm_widget simple_widgets
[] = {
4208 SND_SOC_DAPM_MIC("Microphone", NULL
),
4209 SND_SOC_DAPM_LINE("Line", NULL
),
4210 SND_SOC_DAPM_HP("Headphone", NULL
),
4211 SND_SOC_DAPM_SPK("Speaker", NULL
),
4214 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
4215 const char *propname
)
4217 struct device_node
*np
= card
->dev
->of_node
;
4218 struct snd_soc_dapm_widget
*widgets
;
4219 const char *template, *wname
;
4220 int i
, j
, num_widgets
, ret
;
4222 num_widgets
= of_property_count_strings(np
, propname
);
4223 if (num_widgets
< 0) {
4225 "ASoC: Property '%s' does not exist\n", propname
);
4228 if (num_widgets
& 1) {
4230 "ASoC: Property '%s' length is not even\n", propname
);
4236 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4241 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
4245 "ASoC: Could not allocate memory for widgets\n");
4249 for (i
= 0; i
< num_widgets
; i
++) {
4250 ret
= of_property_read_string_index(np
, propname
,
4254 "ASoC: Property '%s' index %d read error:%d\n",
4255 propname
, 2 * i
, ret
);
4259 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
4260 if (!strncmp(template, simple_widgets
[j
].name
,
4261 strlen(simple_widgets
[j
].name
))) {
4262 widgets
[i
] = simple_widgets
[j
];
4267 if (j
>= ARRAY_SIZE(simple_widgets
)) {
4269 "ASoC: DAPM widget '%s' is not supported\n",
4274 ret
= of_property_read_string_index(np
, propname
,
4279 "ASoC: Property '%s' index %d read error:%d\n",
4280 propname
, (2 * i
) + 1, ret
);
4284 widgets
[i
].name
= wname
;
4287 card
->dapm_widgets
= widgets
;
4288 card
->num_dapm_widgets
= num_widgets
;
4292 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
4294 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
4295 unsigned int *slots
,
4296 unsigned int *slot_width
)
4301 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
4302 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
4310 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
4311 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
4321 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4323 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4324 const char *propname
)
4326 struct device_node
*np
= card
->dev
->of_node
;
4328 struct snd_soc_dapm_route
*routes
;
4331 num_routes
= of_property_count_strings(np
, propname
);
4332 if (num_routes
< 0 || num_routes
& 1) {
4334 "ASoC: Property '%s' does not exist or its length is not even\n",
4340 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4345 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4349 "ASoC: Could not allocate DAPM route table\n");
4353 for (i
= 0; i
< num_routes
; i
++) {
4354 ret
= of_property_read_string_index(np
, propname
,
4355 2 * i
, &routes
[i
].sink
);
4358 "ASoC: Property '%s' index %d could not be read: %d\n",
4359 propname
, 2 * i
, ret
);
4362 ret
= of_property_read_string_index(np
, propname
,
4363 (2 * i
) + 1, &routes
[i
].source
);
4366 "ASoC: Property '%s' index %d could not be read: %d\n",
4367 propname
, (2 * i
) + 1, ret
);
4372 card
->num_dapm_routes
= num_routes
;
4373 card
->dapm_routes
= routes
;
4377 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4379 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4384 unsigned int format
= 0;
4390 } of_fmt_table
[] = {
4391 { "i2s", SND_SOC_DAIFMT_I2S
},
4392 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4393 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4394 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4395 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4396 { "ac97", SND_SOC_DAIFMT_AC97
},
4397 { "pdm", SND_SOC_DAIFMT_PDM
},
4398 { "msb", SND_SOC_DAIFMT_MSB
},
4399 { "lsb", SND_SOC_DAIFMT_LSB
},
4406 * check "[prefix]format = xxx"
4407 * SND_SOC_DAIFMT_FORMAT_MASK area
4409 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4410 ret
= of_property_read_string(np
, prop
, &str
);
4412 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4413 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4414 format
|= of_fmt_table
[i
].val
;
4421 * check "[prefix]continuous-clock"
4422 * SND_SOC_DAIFMT_CLOCK_MASK area
4424 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4425 if (of_get_property(np
, prop
, NULL
))
4426 format
|= SND_SOC_DAIFMT_CONT
;
4428 format
|= SND_SOC_DAIFMT_GATED
;
4431 * check "[prefix]bitclock-inversion"
4432 * check "[prefix]frame-inversion"
4433 * SND_SOC_DAIFMT_INV_MASK area
4435 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4436 bit
= !!of_get_property(np
, prop
, NULL
);
4438 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4439 frame
= !!of_get_property(np
, prop
, NULL
);
4441 switch ((bit
<< 4) + frame
) {
4443 format
|= SND_SOC_DAIFMT_IB_IF
;
4446 format
|= SND_SOC_DAIFMT_IB_NF
;
4449 format
|= SND_SOC_DAIFMT_NB_IF
;
4452 /* SND_SOC_DAIFMT_NB_NF is default */
4457 * check "[prefix]bitclock-master"
4458 * check "[prefix]frame-master"
4459 * SND_SOC_DAIFMT_MASTER_MASK area
4461 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4462 bit
= !!of_get_property(np
, prop
, NULL
);
4464 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4465 frame
= !!of_get_property(np
, prop
, NULL
);
4467 switch ((bit
<< 4) + frame
) {
4469 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4472 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4475 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4478 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4484 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4486 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4487 const char **dai_name
)
4489 struct snd_soc_component
*pos
;
4490 struct of_phandle_args args
;
4493 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4494 "#sound-dai-cells", 0, &args
);
4498 ret
= -EPROBE_DEFER
;
4500 mutex_lock(&client_mutex
);
4501 list_for_each_entry(pos
, &component_list
, list
) {
4502 if (pos
->dev
->of_node
!= args
.np
)
4505 if (pos
->driver
->of_xlate_dai_name
) {
4506 ret
= pos
->driver
->of_xlate_dai_name(pos
, &args
, dai_name
);
4510 switch (args
.args_count
) {
4512 id
= 0; /* same as dai_drv[0] */
4522 if (id
< 0 || id
>= pos
->num_dai
) {
4529 *dai_name
= pos
->dai_drv
[id
].name
;
4531 *dai_name
= pos
->name
;
4536 mutex_unlock(&client_mutex
);
4538 of_node_put(args
.np
);
4542 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4544 static int __init
snd_soc_init(void)
4546 #ifdef CONFIG_DEBUG_FS
4547 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
4548 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
4549 pr_warn("ASoC: Failed to create debugfs directory\n");
4550 snd_soc_debugfs_root
= NULL
;
4553 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
4555 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4557 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
4559 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4561 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
4562 &platform_list_fops
))
4563 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4566 snd_soc_util_init();
4568 return platform_driver_register(&soc_driver
);
4570 module_init(snd_soc_init
);
4572 static void __exit
snd_soc_exit(void)
4574 snd_soc_util_exit();
4576 #ifdef CONFIG_DEBUG_FS
4577 debugfs_remove_recursive(snd_soc_debugfs_root
);
4579 platform_driver_unregister(&soc_driver
);
4581 module_exit(snd_soc_exit
);
4583 /* Module information */
4584 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4585 MODULE_DESCRIPTION("ALSA SoC Core");
4586 MODULE_LICENSE("GPL");
4587 MODULE_ALIAS("platform:soc-audio");