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 struct dentry
*soc_debugfs_create_dir(struct dentry
*parent
,
274 const char *fmt
, ...)
281 s
= kvasprintf(GFP_KERNEL
, fmt
, ap
);
287 de
= debugfs_create_dir(s
, parent
);
293 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
295 struct dentry
*debugfs_card_root
= codec
->component
.card
->debugfs_card_root
;
297 codec
->debugfs_codec_root
= soc_debugfs_create_dir(debugfs_card_root
,
299 codec
->component
.name
);
300 if (!codec
->debugfs_codec_root
) {
302 "ASoC: Failed to create codec debugfs directory\n");
306 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
308 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
311 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
312 codec
->debugfs_codec_root
,
313 codec
, &codec_reg_fops
);
314 if (!codec
->debugfs_reg
)
316 "ASoC: Failed to create codec register debugfs file\n");
318 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
321 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
323 debugfs_remove_recursive(codec
->debugfs_codec_root
);
326 static void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
328 struct dentry
*debugfs_card_root
= platform
->component
.card
->debugfs_card_root
;
330 platform
->debugfs_platform_root
= soc_debugfs_create_dir(debugfs_card_root
,
332 platform
->component
.name
);
333 if (!platform
->debugfs_platform_root
) {
334 dev_warn(platform
->dev
,
335 "ASoC: Failed to create platform debugfs directory\n");
339 snd_soc_dapm_debugfs_init(&platform
->component
.dapm
,
340 platform
->debugfs_platform_root
);
343 static void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
345 debugfs_remove_recursive(platform
->debugfs_platform_root
);
348 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
349 size_t count
, loff_t
*ppos
)
351 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
352 ssize_t len
, ret
= 0;
353 struct snd_soc_codec
*codec
;
358 list_for_each_entry(codec
, &codec_list
, list
) {
359 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
360 codec
->component
.name
);
363 if (ret
> PAGE_SIZE
) {
370 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
377 static const struct file_operations codec_list_fops
= {
378 .read
= codec_list_read_file
,
379 .llseek
= default_llseek
,/* read accesses f_pos */
382 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
383 size_t count
, loff_t
*ppos
)
385 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
386 ssize_t len
, ret
= 0;
387 struct snd_soc_component
*component
;
388 struct snd_soc_dai
*dai
;
393 list_for_each_entry(component
, &component_list
, list
) {
394 list_for_each_entry(dai
, &component
->dai_list
, list
) {
395 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
399 if (ret
> PAGE_SIZE
) {
406 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
413 static const struct file_operations dai_list_fops
= {
414 .read
= dai_list_read_file
,
415 .llseek
= default_llseek
,/* read accesses f_pos */
418 static ssize_t
platform_list_read_file(struct file
*file
,
419 char __user
*user_buf
,
420 size_t count
, loff_t
*ppos
)
422 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
423 ssize_t len
, ret
= 0;
424 struct snd_soc_platform
*platform
;
429 list_for_each_entry(platform
, &platform_list
, list
) {
430 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
431 platform
->component
.name
);
434 if (ret
> PAGE_SIZE
) {
440 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
447 static const struct file_operations platform_list_fops
= {
448 .read
= platform_list_read_file
,
449 .llseek
= default_llseek
,/* read accesses f_pos */
452 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
454 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
455 snd_soc_debugfs_root
);
456 if (!card
->debugfs_card_root
) {
458 "ASoC: Failed to create card debugfs directory\n");
462 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
463 card
->debugfs_card_root
,
465 if (!card
->debugfs_pop_time
)
467 "ASoC: Failed to create pop time debugfs file\n");
470 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
472 debugfs_remove_recursive(card
->debugfs_card_root
);
477 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
481 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
485 static inline void soc_init_platform_debugfs(struct snd_soc_platform
*platform
)
489 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform
*platform
)
493 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
497 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
502 struct snd_pcm_substream
*snd_soc_get_dai_substream(struct snd_soc_card
*card
,
503 const char *dai_link
, int stream
)
507 for (i
= 0; i
< card
->num_links
; i
++) {
508 if (card
->rtd
[i
].dai_link
->no_pcm
&&
509 !strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
510 return card
->rtd
[i
].pcm
->streams
[stream
].substream
;
512 dev_dbg(card
->dev
, "ASoC: failed to find dai link %s\n", dai_link
);
515 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream
);
517 struct snd_soc_pcm_runtime
*snd_soc_get_pcm_runtime(struct snd_soc_card
*card
,
518 const char *dai_link
)
522 for (i
= 0; i
< card
->num_links
; i
++) {
523 if (!strcmp(card
->rtd
[i
].dai_link
->name
, dai_link
))
524 return &card
->rtd
[i
];
526 dev_dbg(card
->dev
, "ASoC: failed to find rtd %s\n", dai_link
);
529 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime
);
531 #ifdef CONFIG_SND_SOC_AC97_BUS
532 /* unregister ac97 codec */
533 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
535 if (codec
->ac97
->dev
.bus
)
536 device_unregister(&codec
->ac97
->dev
);
540 /* stop no dev release warning */
541 static void soc_ac97_device_release(struct device
*dev
){}
543 /* register ac97 codec to bus */
544 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
548 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
549 codec
->ac97
->dev
.parent
= codec
->component
.card
->dev
;
550 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
552 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
553 codec
->component
.card
->snd_card
->number
, 0,
554 codec
->component
.name
);
555 err
= device_register(&codec
->ac97
->dev
);
557 dev_err(codec
->dev
, "ASoC: Can't register ac97 bus\n");
558 codec
->ac97
->dev
.bus
= NULL
;
565 static void codec2codec_close_delayed_work(struct work_struct
*work
)
567 /* Currently nothing to do for c2c links
568 * Since c2c links are internal nodes in the DAPM graph and
569 * don't interface with the outside world or application layer
570 * we don't have to do any special handling on close.
574 #ifdef CONFIG_PM_SLEEP
575 /* powers down audio subsystem for suspend */
576 int snd_soc_suspend(struct device
*dev
)
578 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
579 struct snd_soc_codec
*codec
;
582 /* If the initialization of this soc device failed, there is no codec
583 * associated with it. Just bail out in this case.
585 if (list_empty(&card
->codec_dev_list
))
588 /* Due to the resume being scheduled into a workqueue we could
589 * suspend before that's finished - wait for it to complete.
591 snd_power_lock(card
->snd_card
);
592 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
593 snd_power_unlock(card
->snd_card
);
595 /* we're going to block userspace touching us until resume completes */
596 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
598 /* mute any active DACs */
599 for (i
= 0; i
< card
->num_rtd
; i
++) {
601 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
604 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
605 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
606 struct snd_soc_dai_driver
*drv
= dai
->driver
;
608 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
609 drv
->ops
->digital_mute(dai
, 1);
613 /* suspend all pcms */
614 for (i
= 0; i
< card
->num_rtd
; i
++) {
615 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
618 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
621 if (card
->suspend_pre
)
622 card
->suspend_pre(card
);
624 for (i
= 0; i
< card
->num_rtd
; i
++) {
625 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
626 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
628 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
631 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
632 cpu_dai
->driver
->suspend(cpu_dai
);
633 if (platform
->driver
->suspend
&& !platform
->suspended
) {
634 platform
->driver
->suspend(cpu_dai
);
635 platform
->suspended
= 1;
639 /* close any waiting streams and save state */
640 for (i
= 0; i
< card
->num_rtd
; i
++) {
641 struct snd_soc_dai
**codec_dais
= card
->rtd
[i
].codec_dais
;
642 flush_delayed_work(&card
->rtd
[i
].delayed_work
);
643 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
644 codec_dais
[j
]->codec
->dapm
.suspend_bias_level
=
645 codec_dais
[j
]->codec
->dapm
.bias_level
;
649 for (i
= 0; i
< card
->num_rtd
; i
++) {
651 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
654 snd_soc_dapm_stream_event(&card
->rtd
[i
],
655 SNDRV_PCM_STREAM_PLAYBACK
,
656 SND_SOC_DAPM_STREAM_SUSPEND
);
658 snd_soc_dapm_stream_event(&card
->rtd
[i
],
659 SNDRV_PCM_STREAM_CAPTURE
,
660 SND_SOC_DAPM_STREAM_SUSPEND
);
663 /* Recheck all analogue paths too */
664 dapm_mark_io_dirty(&card
->dapm
);
665 snd_soc_dapm_sync(&card
->dapm
);
667 /* suspend all CODECs */
668 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
669 /* If there are paths active then the CODEC will be held with
670 * bias _ON and should not be suspended. */
671 if (!codec
->suspended
&& codec
->driver
->suspend
) {
672 switch (codec
->dapm
.bias_level
) {
673 case SND_SOC_BIAS_STANDBY
:
675 * If the CODEC is capable of idle
676 * bias off then being in STANDBY
677 * means it's doing something,
678 * otherwise fall through.
680 if (codec
->dapm
.idle_bias_off
) {
682 "ASoC: idle_bias_off CODEC on over suspend\n");
685 case SND_SOC_BIAS_OFF
:
686 codec
->driver
->suspend(codec
);
687 codec
->suspended
= 1;
688 codec
->cache_sync
= 1;
689 if (codec
->component
.regmap
)
690 regcache_mark_dirty(codec
->component
.regmap
);
691 /* deactivate pins to sleep state */
692 pinctrl_pm_select_sleep_state(codec
->dev
);
696 "ASoC: CODEC is on over suspend\n");
702 for (i
= 0; i
< card
->num_rtd
; i
++) {
703 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
705 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
708 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
709 cpu_dai
->driver
->suspend(cpu_dai
);
711 /* deactivate pins to sleep state */
712 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
715 if (card
->suspend_post
)
716 card
->suspend_post(card
);
720 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
722 /* deferred resume work, so resume can complete before we finished
723 * setting our codec back up, which can be very slow on I2C
725 static void soc_resume_deferred(struct work_struct
*work
)
727 struct snd_soc_card
*card
=
728 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
729 struct snd_soc_codec
*codec
;
732 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
733 * so userspace apps are blocked from touching us
736 dev_dbg(card
->dev
, "ASoC: starting resume work\n");
738 /* Bring us up into D2 so that DAPM starts enabling things */
739 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
741 if (card
->resume_pre
)
742 card
->resume_pre(card
);
744 /* resume AC97 DAIs */
745 for (i
= 0; i
< card
->num_rtd
; i
++) {
746 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
748 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
751 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
752 cpu_dai
->driver
->resume(cpu_dai
);
755 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
756 /* If the CODEC was idle over suspend then it will have been
757 * left with bias OFF or STANDBY and suspended so we must now
758 * resume. Otherwise the suspend was suppressed.
760 if (codec
->driver
->resume
&& codec
->suspended
) {
761 switch (codec
->dapm
.bias_level
) {
762 case SND_SOC_BIAS_STANDBY
:
763 case SND_SOC_BIAS_OFF
:
764 codec
->driver
->resume(codec
);
765 codec
->suspended
= 0;
769 "ASoC: CODEC was on over suspend\n");
775 for (i
= 0; i
< card
->num_rtd
; i
++) {
777 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
780 snd_soc_dapm_stream_event(&card
->rtd
[i
],
781 SNDRV_PCM_STREAM_PLAYBACK
,
782 SND_SOC_DAPM_STREAM_RESUME
);
784 snd_soc_dapm_stream_event(&card
->rtd
[i
],
785 SNDRV_PCM_STREAM_CAPTURE
,
786 SND_SOC_DAPM_STREAM_RESUME
);
789 /* unmute any active DACs */
790 for (i
= 0; i
< card
->num_rtd
; i
++) {
792 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
795 for (j
= 0; j
< card
->rtd
[i
].num_codecs
; j
++) {
796 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dais
[j
];
797 struct snd_soc_dai_driver
*drv
= dai
->driver
;
799 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
800 drv
->ops
->digital_mute(dai
, 0);
804 for (i
= 0; i
< card
->num_rtd
; i
++) {
805 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
806 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
808 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
811 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
812 cpu_dai
->driver
->resume(cpu_dai
);
813 if (platform
->driver
->resume
&& platform
->suspended
) {
814 platform
->driver
->resume(cpu_dai
);
815 platform
->suspended
= 0;
819 if (card
->resume_post
)
820 card
->resume_post(card
);
822 dev_dbg(card
->dev
, "ASoC: resume work completed\n");
824 /* userspace can access us now we are back as we were before */
825 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
827 /* Recheck all analogue paths too */
828 dapm_mark_io_dirty(&card
->dapm
);
829 snd_soc_dapm_sync(&card
->dapm
);
832 /* powers up audio subsystem after a suspend */
833 int snd_soc_resume(struct device
*dev
)
835 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
836 int i
, ac97_control
= 0;
838 /* If the initialization of this soc device failed, there is no codec
839 * associated with it. Just bail out in this case.
841 if (list_empty(&card
->codec_dev_list
))
844 /* activate pins from sleep state */
845 for (i
= 0; i
< card
->num_rtd
; i
++) {
846 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
847 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
848 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
852 pinctrl_pm_select_default_state(cpu_dai
->dev
);
854 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
855 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
856 if (codec_dai
->active
)
857 pinctrl_pm_select_default_state(codec_dai
->dev
);
861 /* AC97 devices might have other drivers hanging off them so
862 * need to resume immediately. Other drivers don't have that
863 * problem and may take a substantial amount of time to resume
864 * due to I/O costs and anti-pop so handle them out of line.
866 for (i
= 0; i
< card
->num_rtd
; i
++) {
867 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
868 ac97_control
|= cpu_dai
->driver
->ac97_control
;
871 dev_dbg(dev
, "ASoC: Resuming AC97 immediately\n");
872 soc_resume_deferred(&card
->deferred_resume_work
);
874 dev_dbg(dev
, "ASoC: Scheduling resume work\n");
875 if (!schedule_work(&card
->deferred_resume_work
))
876 dev_err(dev
, "ASoC: resume work item may be lost\n");
881 EXPORT_SYMBOL_GPL(snd_soc_resume
);
883 #define snd_soc_suspend NULL
884 #define snd_soc_resume NULL
887 static const struct snd_soc_dai_ops null_dai_ops
= {
890 static struct snd_soc_codec
*soc_find_codec(
891 const struct device_node
*codec_of_node
,
892 const char *codec_name
)
894 struct snd_soc_codec
*codec
;
896 list_for_each_entry(codec
, &codec_list
, list
) {
898 if (codec
->dev
->of_node
!= codec_of_node
)
901 if (strcmp(codec
->component
.name
, codec_name
))
911 static struct snd_soc_dai
*soc_find_codec_dai(struct snd_soc_codec
*codec
,
912 const char *codec_dai_name
)
914 struct snd_soc_dai
*codec_dai
;
916 list_for_each_entry(codec_dai
, &codec
->component
.dai_list
, list
) {
917 if (!strcmp(codec_dai
->name
, codec_dai_name
)) {
925 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
927 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
928 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
929 struct snd_soc_component
*component
;
930 struct snd_soc_dai_link_component
*codecs
= dai_link
->codecs
;
931 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
932 struct snd_soc_platform
*platform
;
933 struct snd_soc_dai
*cpu_dai
;
934 const char *platform_name
;
937 dev_dbg(card
->dev
, "ASoC: binding %s at idx %d\n", dai_link
->name
, num
);
939 /* Find CPU DAI from registered DAIs*/
940 list_for_each_entry(component
, &component_list
, list
) {
941 if (dai_link
->cpu_of_node
&&
942 component
->dev
->of_node
!= dai_link
->cpu_of_node
)
944 if (dai_link
->cpu_name
&&
945 strcmp(dev_name(component
->dev
), dai_link
->cpu_name
))
947 list_for_each_entry(cpu_dai
, &component
->dai_list
, list
) {
948 if (dai_link
->cpu_dai_name
&&
949 strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
952 rtd
->cpu_dai
= cpu_dai
;
957 dev_err(card
->dev
, "ASoC: CPU DAI %s not registered\n",
958 dai_link
->cpu_dai_name
);
959 return -EPROBE_DEFER
;
962 rtd
->num_codecs
= dai_link
->num_codecs
;
964 /* Find CODEC from registered CODECs */
965 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
966 struct snd_soc_codec
*codec
;
967 codec
= soc_find_codec(codecs
[i
].of_node
, codecs
[i
].name
);
969 dev_err(card
->dev
, "ASoC: CODEC %s not registered\n",
971 return -EPROBE_DEFER
;
974 codec_dais
[i
] = soc_find_codec_dai(codec
, codecs
[i
].dai_name
);
975 if (!codec_dais
[i
]) {
976 dev_err(card
->dev
, "ASoC: CODEC DAI %s not registered\n",
978 return -EPROBE_DEFER
;
982 /* Single codec links expect codec and codec_dai in runtime data */
983 rtd
->codec_dai
= codec_dais
[0];
984 rtd
->codec
= rtd
->codec_dai
->codec
;
986 /* if there's no platform we match on the empty platform */
987 platform_name
= dai_link
->platform_name
;
988 if (!platform_name
&& !dai_link
->platform_of_node
)
989 platform_name
= "snd-soc-dummy";
991 /* find one from the set of registered platforms */
992 list_for_each_entry(platform
, &platform_list
, list
) {
993 if (dai_link
->platform_of_node
) {
994 if (platform
->dev
->of_node
!=
995 dai_link
->platform_of_node
)
998 if (strcmp(platform
->component
.name
, platform_name
))
1002 rtd
->platform
= platform
;
1004 if (!rtd
->platform
) {
1005 dev_err(card
->dev
, "ASoC: platform %s not registered\n",
1006 dai_link
->platform_name
);
1007 return -EPROBE_DEFER
;
1015 static int soc_remove_platform(struct snd_soc_platform
*platform
)
1019 if (platform
->driver
->remove
) {
1020 ret
= platform
->driver
->remove(platform
);
1022 dev_err(platform
->dev
, "ASoC: failed to remove %d\n",
1026 /* Make sure all DAPM widgets are freed */
1027 snd_soc_dapm_free(&platform
->component
.dapm
);
1029 soc_cleanup_platform_debugfs(platform
);
1030 platform
->probed
= 0;
1031 module_put(platform
->dev
->driver
->owner
);
1036 static void soc_remove_codec(struct snd_soc_codec
*codec
)
1040 if (codec
->driver
->remove
) {
1041 err
= codec
->driver
->remove(codec
);
1043 dev_err(codec
->dev
, "ASoC: failed to remove %d\n", err
);
1046 /* Make sure all DAPM widgets are freed */
1047 snd_soc_dapm_free(&codec
->dapm
);
1049 soc_cleanup_codec_debugfs(codec
);
1051 list_del(&codec
->card_list
);
1052 module_put(codec
->dev
->driver
->owner
);
1055 static void soc_remove_codec_dai(struct snd_soc_dai
*codec_dai
, int order
)
1059 if (codec_dai
&& codec_dai
->probed
&&
1060 codec_dai
->driver
->remove_order
== order
) {
1061 if (codec_dai
->driver
->remove
) {
1062 err
= codec_dai
->driver
->remove(codec_dai
);
1064 dev_err(codec_dai
->dev
,
1065 "ASoC: failed to remove %s: %d\n",
1066 codec_dai
->name
, err
);
1068 codec_dai
->probed
= 0;
1072 static void soc_remove_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1074 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1075 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1078 /* unregister the rtd device */
1079 if (rtd
->dev_registered
) {
1080 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
1081 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1082 device_unregister(rtd
->dev
);
1083 rtd
->dev_registered
= 0;
1086 /* remove the CODEC DAI */
1087 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1088 soc_remove_codec_dai(rtd
->codec_dais
[i
], order
);
1090 /* remove the cpu_dai */
1091 if (cpu_dai
&& cpu_dai
->probed
&&
1092 cpu_dai
->driver
->remove_order
== order
) {
1093 if (cpu_dai
->driver
->remove
) {
1094 err
= cpu_dai
->driver
->remove(cpu_dai
);
1096 dev_err(cpu_dai
->dev
,
1097 "ASoC: failed to remove %s: %d\n",
1098 cpu_dai
->name
, err
);
1100 cpu_dai
->probed
= 0;
1101 if (!cpu_dai
->codec
)
1102 module_put(cpu_dai
->dev
->driver
->owner
);
1106 static void soc_remove_link_components(struct snd_soc_card
*card
, int num
,
1109 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1110 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1111 struct snd_soc_platform
*platform
= rtd
->platform
;
1112 struct snd_soc_codec
*codec
;
1115 /* remove the platform */
1116 if (platform
&& platform
->probed
&&
1117 platform
->driver
->remove_order
== order
) {
1118 soc_remove_platform(platform
);
1121 /* remove the CODEC-side CODEC */
1122 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1123 codec
= rtd
->codec_dais
[i
]->codec
;
1124 if (codec
&& codec
->probed
&&
1125 codec
->driver
->remove_order
== order
)
1126 soc_remove_codec(codec
);
1129 /* remove any CPU-side CODEC */
1131 codec
= cpu_dai
->codec
;
1132 if (codec
&& codec
->probed
&&
1133 codec
->driver
->remove_order
== order
)
1134 soc_remove_codec(codec
);
1138 static void soc_remove_dai_links(struct snd_soc_card
*card
)
1142 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1144 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1145 soc_remove_link_dais(card
, dai
, order
);
1148 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1150 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
1151 soc_remove_link_components(card
, dai
, order
);
1157 static void soc_set_name_prefix(struct snd_soc_card
*card
,
1158 struct snd_soc_component
*component
)
1162 if (card
->codec_conf
== NULL
)
1165 for (i
= 0; i
< card
->num_configs
; i
++) {
1166 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
1167 if (map
->of_node
&& component
->dev
->of_node
!= map
->of_node
)
1169 if (map
->dev_name
&& strcmp(component
->name
, map
->dev_name
))
1171 component
->name_prefix
= map
->name_prefix
;
1176 static int soc_probe_codec(struct snd_soc_card
*card
,
1177 struct snd_soc_codec
*codec
)
1180 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
1181 struct snd_soc_dai
*dai
;
1183 codec
->component
.card
= card
;
1184 codec
->dapm
.card
= card
;
1185 soc_set_name_prefix(card
, &codec
->component
);
1187 if (!try_module_get(codec
->dev
->driver
->owner
))
1190 soc_init_codec_debugfs(codec
);
1192 if (driver
->dapm_widgets
) {
1193 ret
= snd_soc_dapm_new_controls(&codec
->dapm
,
1194 driver
->dapm_widgets
,
1195 driver
->num_dapm_widgets
);
1199 "Failed to create new controls %d\n", ret
);
1204 /* Create DAPM widgets for each DAI stream */
1205 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
) {
1206 ret
= snd_soc_dapm_new_dai_widgets(&codec
->dapm
, dai
);
1210 "Failed to create DAI widgets %d\n", ret
);
1215 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
1217 if (driver
->probe
) {
1218 ret
= driver
->probe(codec
);
1221 "ASoC: failed to probe CODEC %d\n", ret
);
1224 WARN(codec
->dapm
.idle_bias_off
&&
1225 codec
->dapm
.bias_level
!= SND_SOC_BIAS_OFF
,
1226 "codec %s can not start from non-off bias with idle_bias_off==1\n",
1227 codec
->component
.name
);
1230 if (driver
->controls
)
1231 snd_soc_add_codec_controls(codec
, driver
->controls
,
1232 driver
->num_controls
);
1233 if (driver
->dapm_routes
)
1234 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
1235 driver
->num_dapm_routes
);
1237 /* mark codec as probed and add to card codec list */
1239 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1240 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1245 soc_cleanup_codec_debugfs(codec
);
1246 module_put(codec
->dev
->driver
->owner
);
1251 static int soc_probe_platform(struct snd_soc_card
*card
,
1252 struct snd_soc_platform
*platform
)
1255 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1256 struct snd_soc_component
*component
;
1257 struct snd_soc_dai
*dai
;
1259 platform
->component
.card
= card
;
1260 platform
->component
.dapm
.card
= card
;
1262 if (!try_module_get(platform
->dev
->driver
->owner
))
1265 soc_init_platform_debugfs(platform
);
1267 if (driver
->dapm_widgets
)
1268 snd_soc_dapm_new_controls(&platform
->component
.dapm
,
1269 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1271 /* Create DAPM widgets for each DAI stream */
1272 list_for_each_entry(component
, &component_list
, list
) {
1273 if (component
->dev
!= platform
->dev
)
1275 list_for_each_entry(dai
, &component
->dai_list
, list
)
1276 snd_soc_dapm_new_dai_widgets(&platform
->component
.dapm
,
1280 platform
->component
.dapm
.idle_bias_off
= 1;
1282 if (driver
->probe
) {
1283 ret
= driver
->probe(platform
);
1285 dev_err(platform
->dev
,
1286 "ASoC: failed to probe platform %d\n", ret
);
1291 if (driver
->controls
)
1292 snd_soc_add_platform_controls(platform
, driver
->controls
,
1293 driver
->num_controls
);
1294 if (driver
->dapm_routes
)
1295 snd_soc_dapm_add_routes(&platform
->component
.dapm
,
1296 driver
->dapm_routes
, driver
->num_dapm_routes
);
1298 /* mark platform as probed and add to card platform list */
1299 platform
->probed
= 1;
1300 list_add(&platform
->component
.dapm
.list
, &card
->dapm_list
);
1305 soc_cleanup_platform_debugfs(platform
);
1306 module_put(platform
->dev
->driver
->owner
);
1311 static void rtd_release(struct device
*dev
)
1316 static int soc_post_component_init(struct snd_soc_pcm_runtime
*rtd
,
1321 /* register the rtd device */
1322 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1325 device_initialize(rtd
->dev
);
1326 rtd
->dev
->parent
= rtd
->card
->dev
;
1327 rtd
->dev
->release
= rtd_release
;
1328 dev_set_name(rtd
->dev
, "%s", name
);
1329 dev_set_drvdata(rtd
->dev
, rtd
);
1330 mutex_init(&rtd
->pcm_mutex
);
1331 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].be_clients
);
1332 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].be_clients
);
1333 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_PLAYBACK
].fe_clients
);
1334 INIT_LIST_HEAD(&rtd
->dpcm
[SNDRV_PCM_STREAM_CAPTURE
].fe_clients
);
1335 ret
= device_add(rtd
->dev
);
1337 /* calling put_device() here to free the rtd->dev */
1338 put_device(rtd
->dev
);
1339 dev_err(rtd
->card
->dev
,
1340 "ASoC: failed to register runtime device: %d\n", ret
);
1343 rtd
->dev_registered
= 1;
1345 /* add DAPM sysfs entries for this codec */
1346 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1349 "ASoC: failed to add codec dapm sysfs entries: %d\n", ret
);
1351 /* add codec sysfs entries */
1352 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1355 "ASoC: failed to add codec sysfs files: %d\n", ret
);
1360 static int soc_probe_link_components(struct snd_soc_card
*card
, int num
,
1363 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1364 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1365 struct snd_soc_platform
*platform
= rtd
->platform
;
1368 /* probe the CPU-side component, if it is a CODEC */
1369 if (cpu_dai
->codec
&&
1370 !cpu_dai
->codec
->probed
&&
1371 cpu_dai
->codec
->driver
->probe_order
== order
) {
1372 ret
= soc_probe_codec(card
, cpu_dai
->codec
);
1377 /* probe the CODEC-side components */
1378 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1379 if (!rtd
->codec_dais
[i
]->codec
->probed
&&
1380 rtd
->codec_dais
[i
]->codec
->driver
->probe_order
== order
) {
1381 ret
= soc_probe_codec(card
, rtd
->codec_dais
[i
]->codec
);
1387 /* probe the platform */
1388 if (!platform
->probed
&&
1389 platform
->driver
->probe_order
== order
) {
1390 ret
= soc_probe_platform(card
, platform
);
1398 static int soc_probe_codec_dai(struct snd_soc_card
*card
,
1399 struct snd_soc_dai
*codec_dai
,
1404 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1405 if (codec_dai
->driver
->probe
) {
1406 ret
= codec_dai
->driver
->probe(codec_dai
);
1408 dev_err(codec_dai
->dev
,
1409 "ASoC: failed to probe CODEC DAI %s: %d\n",
1410 codec_dai
->name
, ret
);
1415 /* mark codec_dai as probed and add to card dai list */
1416 codec_dai
->probed
= 1;
1422 static int soc_link_dai_widgets(struct snd_soc_card
*card
,
1423 struct snd_soc_dai_link
*dai_link
,
1424 struct snd_soc_pcm_runtime
*rtd
)
1426 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1427 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
1428 struct snd_soc_dapm_widget
*play_w
, *capture_w
;
1431 if (rtd
->num_codecs
> 1)
1432 dev_warn(card
->dev
, "ASoC: Multiple codecs not supported yet\n");
1434 /* link the DAI widgets */
1435 play_w
= codec_dai
->playback_widget
;
1436 capture_w
= cpu_dai
->capture_widget
;
1437 if (play_w
&& capture_w
) {
1438 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1441 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1442 play_w
->name
, capture_w
->name
, ret
);
1447 play_w
= cpu_dai
->playback_widget
;
1448 capture_w
= codec_dai
->capture_widget
;
1449 if (play_w
&& capture_w
) {
1450 ret
= snd_soc_dapm_new_pcm(card
, dai_link
->params
,
1453 dev_err(card
->dev
, "ASoC: Can't link %s to %s: %d\n",
1454 play_w
->name
, capture_w
->name
, ret
);
1462 static int soc_probe_link_dais(struct snd_soc_card
*card
, int num
, int order
)
1464 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1465 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1466 struct snd_soc_platform
*platform
= rtd
->platform
;
1467 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
1470 dev_dbg(card
->dev
, "ASoC: probe %s dai link %d late %d\n",
1471 card
->name
, num
, order
);
1473 /* config components */
1474 cpu_dai
->platform
= platform
;
1475 cpu_dai
->card
= card
;
1476 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1477 rtd
->codec_dais
[i
]->card
= card
;
1479 /* set default power off timeout */
1480 rtd
->pmdown_time
= pmdown_time
;
1482 /* probe the cpu_dai */
1483 if (!cpu_dai
->probed
&&
1484 cpu_dai
->driver
->probe_order
== order
) {
1485 if (!cpu_dai
->codec
) {
1486 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1490 if (cpu_dai
->driver
->probe
) {
1491 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1493 dev_err(cpu_dai
->dev
,
1494 "ASoC: failed to probe CPU DAI %s: %d\n",
1495 cpu_dai
->name
, ret
);
1496 module_put(cpu_dai
->dev
->driver
->owner
);
1500 cpu_dai
->probed
= 1;
1503 /* probe the CODEC DAI */
1504 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1505 ret
= soc_probe_codec_dai(card
, rtd
->codec_dais
[i
], order
);
1510 /* complete DAI probe during last probe */
1511 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1514 /* do machine specific initialization */
1515 if (dai_link
->init
) {
1516 ret
= dai_link
->init(rtd
);
1518 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1519 dai_link
->name
, ret
);
1524 ret
= soc_post_component_init(rtd
, dai_link
->name
);
1528 #ifdef CONFIG_DEBUG_FS
1529 /* add DPCM sysfs entries */
1530 if (dai_link
->dynamic
) {
1531 ret
= soc_dpcm_debugfs_add(rtd
);
1534 "ASoC: failed to add dpcm sysfs entries: %d\n",
1541 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1543 dev_warn(rtd
->dev
, "ASoC: failed to add pmdown_time sysfs: %d\n",
1546 if (cpu_dai
->driver
->compress_dai
) {
1547 /*create compress_device"*/
1548 ret
= soc_new_compress(rtd
, num
);
1550 dev_err(card
->dev
, "ASoC: can't create compress %s\n",
1551 dai_link
->stream_name
);
1556 if (!dai_link
->params
) {
1557 /* create the pcm */
1558 ret
= soc_new_pcm(rtd
, num
);
1560 dev_err(card
->dev
, "ASoC: can't create pcm %s :%d\n",
1561 dai_link
->stream_name
, ret
);
1565 INIT_DELAYED_WORK(&rtd
->delayed_work
,
1566 codec2codec_close_delayed_work
);
1568 /* link the DAI widgets */
1569 ret
= soc_link_dai_widgets(card
, dai_link
, rtd
);
1575 /* add platform data for AC97 devices */
1576 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1577 if (rtd
->codec_dais
[i
]->driver
->ac97_control
)
1578 snd_ac97_dev_add_pdata(rtd
->codec_dais
[i
]->codec
->ac97
,
1579 rtd
->cpu_dai
->ac97_pdata
);
1585 #ifdef CONFIG_SND_SOC_AC97_BUS
1586 static int soc_register_ac97_codec(struct snd_soc_codec
*codec
,
1587 struct snd_soc_dai
*codec_dai
)
1591 /* Only instantiate AC97 if not already done by the adaptor
1592 * for the generic AC97 subsystem.
1594 if (codec_dai
->driver
->ac97_control
&& !codec
->ac97_registered
) {
1596 * It is possible that the AC97 device is already registered to
1597 * the device subsystem. This happens when the device is created
1598 * via snd_ac97_mixer(). Currently only SoC codec that does so
1599 * is the generic AC97 glue but others migh emerge.
1601 * In those cases we don't try to register the device again.
1603 if (!codec
->ac97_created
)
1606 ret
= soc_ac97_dev_register(codec
);
1609 "ASoC: AC97 device register failed: %d\n", ret
);
1613 codec
->ac97_registered
= 1;
1618 static void soc_unregister_ac97_codec(struct snd_soc_codec
*codec
)
1620 if (codec
->ac97_registered
) {
1621 soc_ac97_dev_unregister(codec
);
1622 codec
->ac97_registered
= 0;
1626 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1630 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
1631 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
1633 ret
= soc_register_ac97_codec(codec_dai
->codec
, codec_dai
);
1636 soc_unregister_ac97_codec(codec_dai
->codec
);
1644 static void soc_unregister_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1648 for (i
= 0; i
< rtd
->num_codecs
; i
++)
1649 soc_unregister_ac97_codec(rtd
->codec_dais
[i
]->codec
);
1653 static int soc_bind_aux_dev(struct snd_soc_card
*card
, int num
)
1655 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1656 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1657 const char *codecname
= aux_dev
->codec_name
;
1659 rtd
->codec
= soc_find_codec(aux_dev
->codec_of_node
, codecname
);
1661 if (aux_dev
->codec_of_node
)
1662 codecname
= of_node_full_name(aux_dev
->codec_of_node
);
1664 dev_err(card
->dev
, "ASoC: %s not registered\n", codecname
);
1665 return -EPROBE_DEFER
;
1671 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1673 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1674 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1677 if (rtd
->codec
->probed
) {
1678 dev_err(rtd
->codec
->dev
, "ASoC: codec already probed\n");
1682 ret
= soc_probe_codec(card
, rtd
->codec
);
1686 /* do machine specific initialization */
1687 if (aux_dev
->init
) {
1688 ret
= aux_dev
->init(&rtd
->codec
->dapm
);
1690 dev_err(card
->dev
, "ASoC: failed to init %s: %d\n",
1691 aux_dev
->name
, ret
);
1696 return soc_post_component_init(rtd
, aux_dev
->name
);
1699 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1701 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1702 struct snd_soc_codec
*codec
= rtd
->codec
;
1704 /* unregister the rtd device */
1705 if (rtd
->dev_registered
) {
1706 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1707 device_unregister(rtd
->dev
);
1708 rtd
->dev_registered
= 0;
1711 if (codec
&& codec
->probed
)
1712 soc_remove_codec(codec
);
1715 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
)
1719 if (codec
->cache_init
)
1722 ret
= snd_soc_cache_init(codec
);
1725 "ASoC: Failed to set cache compression type: %d\n",
1729 codec
->cache_init
= 1;
1733 static int snd_soc_instantiate_card(struct snd_soc_card
*card
)
1735 struct snd_soc_codec
*codec
;
1736 struct snd_soc_dai_link
*dai_link
;
1737 int ret
, i
, order
, dai_fmt
;
1739 mutex_lock_nested(&card
->mutex
, SND_SOC_CARD_CLASS_INIT
);
1742 for (i
= 0; i
< card
->num_links
; i
++) {
1743 ret
= soc_bind_dai_link(card
, i
);
1748 /* bind aux_devs too */
1749 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1750 ret
= soc_bind_aux_dev(card
, i
);
1755 /* initialize the register cache for each available codec */
1756 list_for_each_entry(codec
, &codec_list
, list
) {
1757 if (codec
->cache_init
)
1759 ret
= snd_soc_init_codec_cache(codec
);
1764 /* card bind complete so register a sound card */
1765 ret
= snd_card_new(card
->dev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1766 card
->owner
, 0, &card
->snd_card
);
1769 "ASoC: can't create sound card for card %s: %d\n",
1774 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1775 card
->dapm
.dev
= card
->dev
;
1776 card
->dapm
.card
= card
;
1777 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1779 #ifdef CONFIG_DEBUG_FS
1780 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1783 #ifdef CONFIG_PM_SLEEP
1784 /* deferred resume work */
1785 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1788 if (card
->dapm_widgets
)
1789 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1790 card
->num_dapm_widgets
);
1792 /* initialise the sound card only once */
1794 ret
= card
->probe(card
);
1796 goto card_probe_error
;
1799 /* probe all components used by DAI links on this card */
1800 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1802 for (i
= 0; i
< card
->num_links
; i
++) {
1803 ret
= soc_probe_link_components(card
, i
, order
);
1806 "ASoC: failed to instantiate card %d\n",
1813 /* probe all DAI links on this card */
1814 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1816 for (i
= 0; i
< card
->num_links
; i
++) {
1817 ret
= soc_probe_link_dais(card
, i
, order
);
1820 "ASoC: failed to instantiate card %d\n",
1827 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1828 ret
= soc_probe_aux_dev(card
, i
);
1831 "ASoC: failed to add auxiliary devices %d\n",
1833 goto probe_aux_dev_err
;
1837 snd_soc_dapm_link_dai_widgets(card
);
1838 snd_soc_dapm_connect_dai_link_widgets(card
);
1841 snd_soc_add_card_controls(card
, card
->controls
, card
->num_controls
);
1843 if (card
->dapm_routes
)
1844 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1845 card
->num_dapm_routes
);
1847 for (i
= 0; i
< card
->num_links
; i
++) {
1848 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1849 dai_link
= &card
->dai_link
[i
];
1850 dai_fmt
= dai_link
->dai_fmt
;
1853 struct snd_soc_dai
**codec_dais
= rtd
->codec_dais
;
1856 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
1857 struct snd_soc_dai
*codec_dai
= codec_dais
[j
];
1859 ret
= snd_soc_dai_set_fmt(codec_dai
, dai_fmt
);
1860 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1861 dev_warn(codec_dai
->dev
,
1862 "ASoC: Failed to set DAI format: %d\n",
1867 /* If this is a regular CPU link there will be a platform */
1869 (dai_link
->platform_name
|| dai_link
->platform_of_node
)) {
1870 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1872 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1873 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1874 "ASoC: Failed to set DAI format: %d\n",
1876 } else if (dai_fmt
) {
1877 /* Flip the polarity for the "CPU" end */
1878 dai_fmt
&= ~SND_SOC_DAIFMT_MASTER_MASK
;
1879 switch (dai_link
->dai_fmt
&
1880 SND_SOC_DAIFMT_MASTER_MASK
) {
1881 case SND_SOC_DAIFMT_CBM_CFM
:
1882 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFS
;
1884 case SND_SOC_DAIFMT_CBM_CFS
:
1885 dai_fmt
|= SND_SOC_DAIFMT_CBS_CFM
;
1887 case SND_SOC_DAIFMT_CBS_CFM
:
1888 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFS
;
1890 case SND_SOC_DAIFMT_CBS_CFS
:
1891 dai_fmt
|= SND_SOC_DAIFMT_CBM_CFM
;
1895 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1897 if (ret
!= 0 && ret
!= -ENOTSUPP
)
1898 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1899 "ASoC: Failed to set DAI format: %d\n",
1904 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1906 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1907 "%s", card
->long_name
? card
->long_name
: card
->name
);
1908 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1909 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1910 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1911 switch (card
->snd_card
->driver
[i
]) {
1917 if (!isalnum(card
->snd_card
->driver
[i
]))
1918 card
->snd_card
->driver
[i
] = '_';
1923 if (card
->late_probe
) {
1924 ret
= card
->late_probe(card
);
1926 dev_err(card
->dev
, "ASoC: %s late_probe() failed: %d\n",
1928 goto probe_aux_dev_err
;
1932 if (card
->fully_routed
)
1933 snd_soc_dapm_auto_nc_pins(card
);
1935 snd_soc_dapm_new_widgets(card
);
1937 ret
= snd_card_register(card
->snd_card
);
1939 dev_err(card
->dev
, "ASoC: failed to register soundcard %d\n",
1941 goto probe_aux_dev_err
;
1944 #ifdef CONFIG_SND_SOC_AC97_BUS
1945 /* register any AC97 codecs */
1946 for (i
= 0; i
< card
->num_rtd
; i
++) {
1947 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1950 "ASoC: failed to register AC97: %d\n", ret
);
1952 soc_unregister_ac97_dai_link(&card
->rtd
[i
]);
1953 goto probe_aux_dev_err
;
1958 card
->instantiated
= 1;
1959 snd_soc_dapm_sync(&card
->dapm
);
1960 mutex_unlock(&card
->mutex
);
1965 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1966 soc_remove_aux_dev(card
, i
);
1969 soc_remove_dai_links(card
);
1975 snd_card_free(card
->snd_card
);
1978 mutex_unlock(&card
->mutex
);
1983 /* probes a new socdev */
1984 static int soc_probe(struct platform_device
*pdev
)
1986 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1989 * no card, so machine driver should be registering card
1990 * we should not be here in that case so ret error
1995 dev_warn(&pdev
->dev
,
1996 "ASoC: machine %s should use snd_soc_register_card()\n",
1999 /* Bodge while we unpick instantiation */
2000 card
->dev
= &pdev
->dev
;
2002 return snd_soc_register_card(card
);
2005 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
2009 /* make sure any delayed work runs */
2010 for (i
= 0; i
< card
->num_rtd
; i
++) {
2011 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2012 flush_delayed_work(&rtd
->delayed_work
);
2015 /* remove auxiliary devices */
2016 for (i
= 0; i
< card
->num_aux_devs
; i
++)
2017 soc_remove_aux_dev(card
, i
);
2019 /* remove and free each DAI */
2020 soc_remove_dai_links(card
);
2022 soc_cleanup_card_debugfs(card
);
2024 /* remove the card */
2028 snd_soc_dapm_free(&card
->dapm
);
2030 snd_card_free(card
->snd_card
);
2035 /* removes a socdev */
2036 static int soc_remove(struct platform_device
*pdev
)
2038 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
2040 snd_soc_unregister_card(card
);
2044 int snd_soc_poweroff(struct device
*dev
)
2046 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
2049 if (!card
->instantiated
)
2052 /* Flush out pmdown_time work - we actually do want to run it
2053 * now, we're shutting down so no imminent restart. */
2054 for (i
= 0; i
< card
->num_rtd
; i
++) {
2055 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2056 flush_delayed_work(&rtd
->delayed_work
);
2059 snd_soc_dapm_shutdown(card
);
2061 /* deactivate pins to sleep state */
2062 for (i
= 0; i
< card
->num_rtd
; i
++) {
2063 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
2064 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
2067 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
2068 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
2069 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
2070 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
2076 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
2078 const struct dev_pm_ops snd_soc_pm_ops
= {
2079 .suspend
= snd_soc_suspend
,
2080 .resume
= snd_soc_resume
,
2081 .freeze
= snd_soc_suspend
,
2082 .thaw
= snd_soc_resume
,
2083 .poweroff
= snd_soc_poweroff
,
2084 .restore
= snd_soc_resume
,
2086 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
2088 /* ASoC platform driver */
2089 static struct platform_driver soc_driver
= {
2091 .name
= "soc-audio",
2092 .owner
= THIS_MODULE
,
2093 .pm
= &snd_soc_pm_ops
,
2096 .remove
= soc_remove
,
2100 * snd_soc_new_ac97_codec - initailise AC97 device
2101 * @codec: audio codec
2102 * @ops: AC97 bus operations
2103 * @num: AC97 codec number
2105 * Initialises AC97 codec resources for use by ad-hoc devices only.
2107 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
2108 struct snd_ac97_bus_ops
*ops
, int num
)
2110 mutex_lock(&codec
->mutex
);
2112 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
2113 if (codec
->ac97
== NULL
) {
2114 mutex_unlock(&codec
->mutex
);
2118 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
2119 if (codec
->ac97
->bus
== NULL
) {
2122 mutex_unlock(&codec
->mutex
);
2126 codec
->ac97
->bus
->ops
= ops
;
2127 codec
->ac97
->num
= num
;
2130 * Mark the AC97 device to be created by us. This way we ensure that the
2131 * device will be registered with the device subsystem later on.
2133 codec
->ac97_created
= 1;
2135 mutex_unlock(&codec
->mutex
);
2138 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
2140 static struct snd_ac97_reset_cfg snd_ac97_rst_cfg
;
2142 static void snd_soc_ac97_warm_reset(struct snd_ac97
*ac97
)
2144 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2146 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_warm_reset
);
2148 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 1);
2152 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2154 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2158 static void snd_soc_ac97_reset(struct snd_ac97
*ac97
)
2160 struct pinctrl
*pctl
= snd_ac97_rst_cfg
.pctl
;
2162 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_reset
);
2164 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sync
, 0);
2165 gpio_direction_output(snd_ac97_rst_cfg
.gpio_sdata
, 0);
2166 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 0);
2170 gpio_direction_output(snd_ac97_rst_cfg
.gpio_reset
, 1);
2172 pinctrl_select_state(pctl
, snd_ac97_rst_cfg
.pstate_run
);
2176 static int snd_soc_ac97_parse_pinctl(struct device
*dev
,
2177 struct snd_ac97_reset_cfg
*cfg
)
2180 struct pinctrl_state
*state
;
2184 p
= devm_pinctrl_get(dev
);
2186 dev_err(dev
, "Failed to get pinctrl\n");
2191 state
= pinctrl_lookup_state(p
, "ac97-reset");
2192 if (IS_ERR(state
)) {
2193 dev_err(dev
, "Can't find pinctrl state ac97-reset\n");
2194 return PTR_ERR(state
);
2196 cfg
->pstate_reset
= state
;
2198 state
= pinctrl_lookup_state(p
, "ac97-warm-reset");
2199 if (IS_ERR(state
)) {
2200 dev_err(dev
, "Can't find pinctrl state ac97-warm-reset\n");
2201 return PTR_ERR(state
);
2203 cfg
->pstate_warm_reset
= state
;
2205 state
= pinctrl_lookup_state(p
, "ac97-running");
2206 if (IS_ERR(state
)) {
2207 dev_err(dev
, "Can't find pinctrl state ac97-running\n");
2208 return PTR_ERR(state
);
2210 cfg
->pstate_run
= state
;
2212 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 0);
2214 dev_err(dev
, "Can't find ac97-sync gpio\n");
2217 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sync");
2219 dev_err(dev
, "Failed requesting ac97-sync gpio\n");
2222 cfg
->gpio_sync
= gpio
;
2224 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 1);
2226 dev_err(dev
, "Can't find ac97-sdata gpio %d\n", gpio
);
2229 ret
= devm_gpio_request(dev
, gpio
, "AC97 link sdata");
2231 dev_err(dev
, "Failed requesting ac97-sdata gpio\n");
2234 cfg
->gpio_sdata
= gpio
;
2236 gpio
= of_get_named_gpio(dev
->of_node
, "ac97-gpios", 2);
2238 dev_err(dev
, "Can't find ac97-reset gpio\n");
2241 ret
= devm_gpio_request(dev
, gpio
, "AC97 link reset");
2243 dev_err(dev
, "Failed requesting ac97-reset gpio\n");
2246 cfg
->gpio_reset
= gpio
;
2251 struct snd_ac97_bus_ops
*soc_ac97_ops
;
2252 EXPORT_SYMBOL_GPL(soc_ac97_ops
);
2254 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops
*ops
)
2256 if (ops
== soc_ac97_ops
)
2259 if (soc_ac97_ops
&& ops
)
2266 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops
);
2269 * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
2271 * This function sets the reset and warm_reset properties of ops and parses
2272 * the device node of pdev to get pinctrl states and gpio numbers to use.
2274 int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops
*ops
,
2275 struct platform_device
*pdev
)
2277 struct device
*dev
= &pdev
->dev
;
2278 struct snd_ac97_reset_cfg cfg
;
2281 ret
= snd_soc_ac97_parse_pinctl(dev
, &cfg
);
2285 ret
= snd_soc_set_ac97_ops(ops
);
2289 ops
->warm_reset
= snd_soc_ac97_warm_reset
;
2290 ops
->reset
= snd_soc_ac97_reset
;
2292 snd_ac97_rst_cfg
= cfg
;
2295 EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset
);
2298 * snd_soc_free_ac97_codec - free AC97 codec device
2299 * @codec: audio codec
2301 * Frees AC97 codec device resources.
2303 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
2305 mutex_lock(&codec
->mutex
);
2306 #ifdef CONFIG_SND_SOC_AC97_BUS
2307 soc_unregister_ac97_codec(codec
);
2309 kfree(codec
->ac97
->bus
);
2312 codec
->ac97_created
= 0;
2313 mutex_unlock(&codec
->mutex
);
2315 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
2318 * snd_soc_cnew - create new control
2319 * @_template: control template
2320 * @data: control private data
2321 * @long_name: control long name
2322 * @prefix: control name prefix
2324 * Create a new mixer control from a template control.
2326 * Returns 0 for success, else error.
2328 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
2329 void *data
, const char *long_name
,
2332 struct snd_kcontrol_new
template;
2333 struct snd_kcontrol
*kcontrol
;
2336 memcpy(&template, _template
, sizeof(template));
2340 long_name
= template.name
;
2343 name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, long_name
);
2347 template.name
= name
;
2349 template.name
= long_name
;
2352 kcontrol
= snd_ctl_new1(&template, data
);
2358 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2360 static int snd_soc_add_controls(struct snd_card
*card
, struct device
*dev
,
2361 const struct snd_kcontrol_new
*controls
, int num_controls
,
2362 const char *prefix
, void *data
)
2366 for (i
= 0; i
< num_controls
; i
++) {
2367 const struct snd_kcontrol_new
*control
= &controls
[i
];
2368 err
= snd_ctl_add(card
, snd_soc_cnew(control
, data
,
2369 control
->name
, prefix
));
2371 dev_err(dev
, "ASoC: Failed to add %s: %d\n",
2372 control
->name
, err
);
2380 struct snd_kcontrol
*snd_soc_card_get_kcontrol(struct snd_soc_card
*soc_card
,
2383 struct snd_card
*card
= soc_card
->snd_card
;
2384 struct snd_kcontrol
*kctl
;
2386 if (unlikely(!name
))
2389 list_for_each_entry(kctl
, &card
->controls
, list
)
2390 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
)))
2394 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol
);
2397 * snd_soc_add_component_controls - Add an array of controls to a component.
2399 * @component: Component to add controls to
2400 * @controls: Array of controls to add
2401 * @num_controls: Number of elements in the array
2403 * Return: 0 for success, else error.
2405 int snd_soc_add_component_controls(struct snd_soc_component
*component
,
2406 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2408 struct snd_card
*card
= component
->card
->snd_card
;
2410 return snd_soc_add_controls(card
, component
->dev
, controls
,
2411 num_controls
, component
->name_prefix
, component
);
2413 EXPORT_SYMBOL_GPL(snd_soc_add_component_controls
);
2416 * snd_soc_add_codec_controls - add an array of controls to a codec.
2417 * Convenience function to add a list of controls. Many codecs were
2418 * duplicating this code.
2420 * @codec: codec to add controls to
2421 * @controls: array of controls to add
2422 * @num_controls: number of elements in the array
2424 * Return 0 for success, else error.
2426 int snd_soc_add_codec_controls(struct snd_soc_codec
*codec
,
2427 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2429 return snd_soc_add_component_controls(&codec
->component
, controls
,
2432 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls
);
2435 * snd_soc_add_platform_controls - add an array of controls to a platform.
2436 * Convenience function to add a list of controls.
2438 * @platform: platform to add controls to
2439 * @controls: array of controls to add
2440 * @num_controls: number of elements in the array
2442 * Return 0 for success, else error.
2444 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2445 const struct snd_kcontrol_new
*controls
, unsigned int num_controls
)
2447 return snd_soc_add_component_controls(&platform
->component
, controls
,
2450 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2453 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2454 * Convenience function to add a list of controls.
2456 * @soc_card: SoC card to add controls to
2457 * @controls: array of controls to add
2458 * @num_controls: number of elements in the array
2460 * Return 0 for success, else error.
2462 int snd_soc_add_card_controls(struct snd_soc_card
*soc_card
,
2463 const struct snd_kcontrol_new
*controls
, int num_controls
)
2465 struct snd_card
*card
= soc_card
->snd_card
;
2467 return snd_soc_add_controls(card
, soc_card
->dev
, controls
, num_controls
,
2470 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls
);
2473 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2474 * Convienience function to add a list of controls.
2476 * @dai: DAI to add controls to
2477 * @controls: array of controls to add
2478 * @num_controls: number of elements in the array
2480 * Return 0 for success, else error.
2482 int snd_soc_add_dai_controls(struct snd_soc_dai
*dai
,
2483 const struct snd_kcontrol_new
*controls
, int num_controls
)
2485 struct snd_card
*card
= dai
->card
->snd_card
;
2487 return snd_soc_add_controls(card
, dai
->dev
, controls
, num_controls
,
2490 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls
);
2493 * snd_soc_info_enum_double - enumerated double mixer info callback
2494 * @kcontrol: mixer control
2495 * @uinfo: control element information
2497 * Callback to provide information about a double enumerated
2500 * Returns 0 for success.
2502 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2503 struct snd_ctl_elem_info
*uinfo
)
2505 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2507 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2508 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2509 uinfo
->value
.enumerated
.items
= e
->items
;
2511 if (uinfo
->value
.enumerated
.item
>= e
->items
)
2512 uinfo
->value
.enumerated
.item
= e
->items
- 1;
2513 strlcpy(uinfo
->value
.enumerated
.name
,
2514 e
->texts
[uinfo
->value
.enumerated
.item
],
2515 sizeof(uinfo
->value
.enumerated
.name
));
2518 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2521 * snd_soc_get_enum_double - enumerated double mixer get callback
2522 * @kcontrol: mixer control
2523 * @ucontrol: control element information
2525 * Callback to get the value of a double enumerated mixer.
2527 * Returns 0 for success.
2529 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2530 struct snd_ctl_elem_value
*ucontrol
)
2532 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2533 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2534 unsigned int val
, item
;
2535 unsigned int reg_val
;
2538 ret
= snd_soc_component_read(component
, e
->reg
, ®_val
);
2541 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2542 item
= snd_soc_enum_val_to_item(e
, val
);
2543 ucontrol
->value
.enumerated
.item
[0] = item
;
2544 if (e
->shift_l
!= e
->shift_r
) {
2545 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2546 item
= snd_soc_enum_val_to_item(e
, val
);
2547 ucontrol
->value
.enumerated
.item
[1] = item
;
2552 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2555 * snd_soc_put_enum_double - enumerated double mixer put callback
2556 * @kcontrol: mixer control
2557 * @ucontrol: control element information
2559 * Callback to set the value of a double enumerated mixer.
2561 * Returns 0 for success.
2563 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2564 struct snd_ctl_elem_value
*ucontrol
)
2566 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2567 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2568 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
2572 if (item
[0] >= e
->items
)
2574 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
2575 mask
= e
->mask
<< e
->shift_l
;
2576 if (e
->shift_l
!= e
->shift_r
) {
2577 if (item
[1] >= e
->items
)
2579 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_r
;
2580 mask
|= e
->mask
<< e
->shift_r
;
2583 return snd_soc_component_update_bits(component
, e
->reg
, mask
, val
);
2585 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2588 * snd_soc_read_signed - Read a codec register and interprete as signed value
2589 * @component: component
2590 * @reg: Register to read
2591 * @mask: Mask to use after shifting the register value
2592 * @shift: Right shift of register value
2593 * @sign_bit: Bit that describes if a number is negative or not.
2594 * @signed_val: Pointer to where the read value should be stored
2596 * This functions reads a codec register. The register value is shifted right
2597 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
2598 * the given registervalue into a signed integer if sign_bit is non-zero.
2600 * Returns 0 on sucess, otherwise an error value
2602 static int snd_soc_read_signed(struct snd_soc_component
*component
,
2603 unsigned int reg
, unsigned int mask
, unsigned int shift
,
2604 unsigned int sign_bit
, int *signed_val
)
2609 ret
= snd_soc_component_read(component
, reg
, &val
);
2613 val
= (val
>> shift
) & mask
;
2620 /* non-negative number */
2621 if (!(val
& BIT(sign_bit
))) {
2629 * The register most probably does not contain a full-sized int.
2630 * Instead we have an arbitrary number of bits in a signed
2631 * representation which has to be translated into a full-sized int.
2632 * This is done by filling up all bits above the sign-bit.
2634 ret
|= ~((int)(BIT(sign_bit
) - 1));
2642 * snd_soc_info_volsw - single mixer info callback
2643 * @kcontrol: mixer control
2644 * @uinfo: control element information
2646 * Callback to provide information about a single mixer control, or a double
2647 * mixer control that spans 2 registers.
2649 * Returns 0 for success.
2651 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2652 struct snd_ctl_elem_info
*uinfo
)
2654 struct soc_mixer_control
*mc
=
2655 (struct soc_mixer_control
*)kcontrol
->private_value
;
2658 if (!mc
->platform_max
)
2659 mc
->platform_max
= mc
->max
;
2660 platform_max
= mc
->platform_max
;
2662 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2663 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2665 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2667 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2668 uinfo
->value
.integer
.min
= 0;
2669 uinfo
->value
.integer
.max
= platform_max
- mc
->min
;
2672 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2675 * snd_soc_get_volsw - single mixer get callback
2676 * @kcontrol: mixer control
2677 * @ucontrol: control element information
2679 * Callback to get the value of a single mixer control, or a double mixer
2680 * control that spans 2 registers.
2682 * Returns 0 for success.
2684 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2685 struct snd_ctl_elem_value
*ucontrol
)
2687 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2688 struct soc_mixer_control
*mc
=
2689 (struct soc_mixer_control
*)kcontrol
->private_value
;
2690 unsigned int reg
= mc
->reg
;
2691 unsigned int reg2
= mc
->rreg
;
2692 unsigned int shift
= mc
->shift
;
2693 unsigned int rshift
= mc
->rshift
;
2696 int sign_bit
= mc
->sign_bit
;
2697 unsigned int mask
= (1 << fls(max
)) - 1;
2698 unsigned int invert
= mc
->invert
;
2703 mask
= BIT(sign_bit
+ 1) - 1;
2705 ret
= snd_soc_read_signed(component
, reg
, mask
, shift
, sign_bit
, &val
);
2709 ucontrol
->value
.integer
.value
[0] = val
- min
;
2711 ucontrol
->value
.integer
.value
[0] =
2712 max
- ucontrol
->value
.integer
.value
[0];
2714 if (snd_soc_volsw_is_stereo(mc
)) {
2716 ret
= snd_soc_read_signed(component
, reg
, mask
, rshift
,
2719 ret
= snd_soc_read_signed(component
, reg2
, mask
, shift
,
2724 ucontrol
->value
.integer
.value
[1] = val
- min
;
2726 ucontrol
->value
.integer
.value
[1] =
2727 max
- ucontrol
->value
.integer
.value
[1];
2732 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2735 * snd_soc_put_volsw - single mixer put callback
2736 * @kcontrol: mixer control
2737 * @ucontrol: control element information
2739 * Callback to set the value of a single mixer control, or a double mixer
2740 * control that spans 2 registers.
2742 * Returns 0 for success.
2744 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2745 struct snd_ctl_elem_value
*ucontrol
)
2747 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2748 struct soc_mixer_control
*mc
=
2749 (struct soc_mixer_control
*)kcontrol
->private_value
;
2750 unsigned int reg
= mc
->reg
;
2751 unsigned int reg2
= mc
->rreg
;
2752 unsigned int shift
= mc
->shift
;
2753 unsigned int rshift
= mc
->rshift
;
2756 unsigned int sign_bit
= mc
->sign_bit
;
2757 unsigned int mask
= (1 << fls(max
)) - 1;
2758 unsigned int invert
= mc
->invert
;
2760 bool type_2r
= false;
2761 unsigned int val2
= 0;
2762 unsigned int val
, val_mask
;
2765 mask
= BIT(sign_bit
+ 1) - 1;
2767 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
2770 val_mask
= mask
<< shift
;
2772 if (snd_soc_volsw_is_stereo(mc
)) {
2773 val2
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
2777 val_mask
|= mask
<< rshift
;
2778 val
|= val2
<< rshift
;
2780 val2
= val2
<< shift
;
2784 err
= snd_soc_component_update_bits(component
, reg
, val_mask
, val
);
2789 err
= snd_soc_component_update_bits(component
, reg2
, val_mask
,
2794 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2797 * snd_soc_get_volsw_sx - single mixer get callback
2798 * @kcontrol: mixer control
2799 * @ucontrol: control element information
2801 * Callback to get the value of a single mixer control, or a double mixer
2802 * control that spans 2 registers.
2804 * Returns 0 for success.
2806 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
2807 struct snd_ctl_elem_value
*ucontrol
)
2809 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2810 struct soc_mixer_control
*mc
=
2811 (struct soc_mixer_control
*)kcontrol
->private_value
;
2812 unsigned int reg
= mc
->reg
;
2813 unsigned int reg2
= mc
->rreg
;
2814 unsigned int shift
= mc
->shift
;
2815 unsigned int rshift
= mc
->rshift
;
2818 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2822 ret
= snd_soc_component_read(component
, reg
, &val
);
2826 ucontrol
->value
.integer
.value
[0] = ((val
>> shift
) - min
) & mask
;
2828 if (snd_soc_volsw_is_stereo(mc
)) {
2829 ret
= snd_soc_component_read(component
, reg2
, &val
);
2833 val
= ((val
>> rshift
) - min
) & mask
;
2834 ucontrol
->value
.integer
.value
[1] = val
;
2839 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
2842 * snd_soc_put_volsw_sx - double mixer set callback
2843 * @kcontrol: mixer control
2844 * @uinfo: control element information
2846 * Callback to set the value of a double mixer control that spans 2 registers.
2848 * Returns 0 for success.
2850 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
2851 struct snd_ctl_elem_value
*ucontrol
)
2853 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2854 struct soc_mixer_control
*mc
=
2855 (struct soc_mixer_control
*)kcontrol
->private_value
;
2857 unsigned int reg
= mc
->reg
;
2858 unsigned int reg2
= mc
->rreg
;
2859 unsigned int shift
= mc
->shift
;
2860 unsigned int rshift
= mc
->rshift
;
2863 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
2865 unsigned int val
, val_mask
, val2
= 0;
2867 val_mask
= mask
<< shift
;
2868 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
2871 err
= snd_soc_component_update_bits(component
, reg
, val_mask
, val
);
2875 if (snd_soc_volsw_is_stereo(mc
)) {
2876 val_mask
= mask
<< rshift
;
2877 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
2878 val2
= val2
<< rshift
;
2880 err
= snd_soc_component_update_bits(component
, reg2
, val_mask
,
2885 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
2888 * snd_soc_info_volsw_s8 - signed mixer info callback
2889 * @kcontrol: mixer control
2890 * @uinfo: control element information
2892 * Callback to provide information about a signed mixer control.
2894 * Returns 0 for success.
2896 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2897 struct snd_ctl_elem_info
*uinfo
)
2899 struct soc_mixer_control
*mc
=
2900 (struct soc_mixer_control
*)kcontrol
->private_value
;
2904 if (!mc
->platform_max
)
2905 mc
->platform_max
= mc
->max
;
2906 platform_max
= mc
->platform_max
;
2908 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2910 uinfo
->value
.integer
.min
= 0;
2911 uinfo
->value
.integer
.max
= platform_max
- min
;
2914 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2917 * snd_soc_get_volsw_s8 - signed mixer get callback
2918 * @kcontrol: mixer control
2919 * @ucontrol: control element information
2921 * Callback to get the value of a signed mixer control.
2923 * Returns 0 for success.
2925 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2926 struct snd_ctl_elem_value
*ucontrol
)
2928 struct soc_mixer_control
*mc
=
2929 (struct soc_mixer_control
*)kcontrol
->private_value
;
2930 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2931 unsigned int reg
= mc
->reg
;
2936 ret
= snd_soc_component_read(component
, reg
, &val
);
2940 ucontrol
->value
.integer
.value
[0] =
2941 ((signed char)(val
& 0xff))-min
;
2942 ucontrol
->value
.integer
.value
[1] =
2943 ((signed char)((val
>> 8) & 0xff))-min
;
2946 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2949 * snd_soc_put_volsw_sgn - signed mixer put callback
2950 * @kcontrol: mixer control
2951 * @ucontrol: control element information
2953 * Callback to set the value of a signed mixer control.
2955 * Returns 0 for success.
2957 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2958 struct snd_ctl_elem_value
*ucontrol
)
2960 struct soc_mixer_control
*mc
=
2961 (struct soc_mixer_control
*)kcontrol
->private_value
;
2962 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
2963 unsigned int reg
= mc
->reg
;
2967 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2968 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2970 return snd_soc_component_update_bits(component
, reg
, 0xffff, val
);
2972 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2975 * snd_soc_info_volsw_range - single mixer info callback with range.
2976 * @kcontrol: mixer control
2977 * @uinfo: control element information
2979 * Callback to provide information, within a range, about a single
2982 * returns 0 for success.
2984 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
2985 struct snd_ctl_elem_info
*uinfo
)
2987 struct soc_mixer_control
*mc
=
2988 (struct soc_mixer_control
*)kcontrol
->private_value
;
2992 if (!mc
->platform_max
)
2993 mc
->platform_max
= mc
->max
;
2994 platform_max
= mc
->platform_max
;
2996 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2997 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2998 uinfo
->value
.integer
.min
= 0;
2999 uinfo
->value
.integer
.max
= platform_max
- min
;
3003 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
3006 * snd_soc_put_volsw_range - single mixer put value callback with range.
3007 * @kcontrol: mixer control
3008 * @ucontrol: control element information
3010 * Callback to set the value, within a range, for a single mixer control.
3012 * Returns 0 for success.
3014 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
3015 struct snd_ctl_elem_value
*ucontrol
)
3017 struct soc_mixer_control
*mc
=
3018 (struct soc_mixer_control
*)kcontrol
->private_value
;
3019 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3020 unsigned int reg
= mc
->reg
;
3021 unsigned int rreg
= mc
->rreg
;
3022 unsigned int shift
= mc
->shift
;
3025 unsigned int mask
= (1 << fls(max
)) - 1;
3026 unsigned int invert
= mc
->invert
;
3027 unsigned int val
, val_mask
;
3030 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
3033 val_mask
= mask
<< shift
;
3036 ret
= snd_soc_component_update_bits(component
, reg
, val_mask
, val
);
3040 if (snd_soc_volsw_is_stereo(mc
)) {
3041 val
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
3044 val_mask
= mask
<< shift
;
3047 ret
= snd_soc_component_update_bits(component
, rreg
, val_mask
,
3053 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
3056 * snd_soc_get_volsw_range - single mixer get callback with range
3057 * @kcontrol: mixer control
3058 * @ucontrol: control element information
3060 * Callback to get the value, within a range, of a single mixer control.
3062 * Returns 0 for success.
3064 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
3065 struct snd_ctl_elem_value
*ucontrol
)
3067 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3068 struct soc_mixer_control
*mc
=
3069 (struct soc_mixer_control
*)kcontrol
->private_value
;
3070 unsigned int reg
= mc
->reg
;
3071 unsigned int rreg
= mc
->rreg
;
3072 unsigned int shift
= mc
->shift
;
3075 unsigned int mask
= (1 << fls(max
)) - 1;
3076 unsigned int invert
= mc
->invert
;
3080 ret
= snd_soc_component_read(component
, reg
, &val
);
3084 ucontrol
->value
.integer
.value
[0] = (val
>> shift
) & mask
;
3086 ucontrol
->value
.integer
.value
[0] =
3087 max
- ucontrol
->value
.integer
.value
[0];
3088 ucontrol
->value
.integer
.value
[0] =
3089 ucontrol
->value
.integer
.value
[0] - min
;
3091 if (snd_soc_volsw_is_stereo(mc
)) {
3092 ret
= snd_soc_component_read(component
, rreg
, &val
);
3096 ucontrol
->value
.integer
.value
[1] = (val
>> shift
) & mask
;
3098 ucontrol
->value
.integer
.value
[1] =
3099 max
- ucontrol
->value
.integer
.value
[1];
3100 ucontrol
->value
.integer
.value
[1] =
3101 ucontrol
->value
.integer
.value
[1] - min
;
3106 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
3109 * snd_soc_limit_volume - Set new limit to an existing volume control.
3111 * @codec: where to look for the control
3112 * @name: Name of the control
3113 * @max: new maximum limit
3115 * Return 0 for success, else error.
3117 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
3118 const char *name
, int max
)
3120 struct snd_card
*card
= codec
->component
.card
->snd_card
;
3121 struct snd_kcontrol
*kctl
;
3122 struct soc_mixer_control
*mc
;
3126 /* Sanity check for name and max */
3127 if (unlikely(!name
|| max
<= 0))
3130 list_for_each_entry(kctl
, &card
->controls
, list
) {
3131 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
3137 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
3138 if (max
<= mc
->max
) {
3139 mc
->platform_max
= max
;
3145 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
3147 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
3148 struct snd_ctl_elem_info
*uinfo
)
3150 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3151 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3153 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
3154 uinfo
->count
= params
->num_regs
* component
->val_bytes
;
3158 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
3160 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
3161 struct snd_ctl_elem_value
*ucontrol
)
3163 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3164 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3167 if (component
->regmap
)
3168 ret
= regmap_raw_read(component
->regmap
, params
->base
,
3169 ucontrol
->value
.bytes
.data
,
3170 params
->num_regs
* component
->val_bytes
);
3174 /* Hide any masked bytes to ensure consistent data reporting */
3175 if (ret
== 0 && params
->mask
) {
3176 switch (component
->val_bytes
) {
3178 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
3181 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
3182 &= cpu_to_be16(~params
->mask
);
3185 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
3186 &= cpu_to_be32(~params
->mask
);
3195 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
3197 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
3198 struct snd_ctl_elem_value
*ucontrol
)
3200 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3201 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
3203 unsigned int val
, mask
;
3206 if (!component
->regmap
)
3209 len
= params
->num_regs
* component
->val_bytes
;
3211 data
= kmemdup(ucontrol
->value
.bytes
.data
, len
, GFP_KERNEL
| GFP_DMA
);
3216 * If we've got a mask then we need to preserve the register
3217 * bits. We shouldn't modify the incoming data so take a
3221 ret
= regmap_read(component
->regmap
, params
->base
, &val
);
3225 val
&= params
->mask
;
3227 switch (component
->val_bytes
) {
3229 ((u8
*)data
)[0] &= ~params
->mask
;
3230 ((u8
*)data
)[0] |= val
;
3233 mask
= ~params
->mask
;
3234 ret
= regmap_parse_val(component
->regmap
,
3239 ((u16
*)data
)[0] &= mask
;
3241 ret
= regmap_parse_val(component
->regmap
,
3246 ((u16
*)data
)[0] |= val
;
3249 mask
= ~params
->mask
;
3250 ret
= regmap_parse_val(component
->regmap
,
3255 ((u32
*)data
)[0] &= mask
;
3257 ret
= regmap_parse_val(component
->regmap
,
3262 ((u32
*)data
)[0] |= val
;
3270 ret
= regmap_raw_write(component
->regmap
, params
->base
,
3278 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
3280 int snd_soc_bytes_info_ext(struct snd_kcontrol
*kcontrol
,
3281 struct snd_ctl_elem_info
*ucontrol
)
3283 struct soc_bytes_ext
*params
= (void *)kcontrol
->private_value
;
3285 ucontrol
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
3286 ucontrol
->count
= params
->max
;
3290 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext
);
3292 int snd_soc_bytes_tlv_callback(struct snd_kcontrol
*kcontrol
, int op_flag
,
3293 unsigned int size
, unsigned int __user
*tlv
)
3295 struct soc_bytes_ext
*params
= (void *)kcontrol
->private_value
;
3296 unsigned int count
= size
< params
->max
? size
: params
->max
;
3300 case SNDRV_CTL_TLV_OP_READ
:
3302 ret
= params
->get(tlv
, count
);
3304 case SNDRV_CTL_TLV_OP_WRITE
:
3306 ret
= params
->put(tlv
, count
);
3311 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback
);
3314 * snd_soc_info_xr_sx - signed multi register info callback
3315 * @kcontrol: mreg control
3316 * @uinfo: control element information
3318 * Callback to provide information of a control that can
3319 * span multiple codec registers which together
3320 * forms a single signed value in a MSB/LSB manner.
3322 * Returns 0 for success.
3324 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
3325 struct snd_ctl_elem_info
*uinfo
)
3327 struct soc_mreg_control
*mc
=
3328 (struct soc_mreg_control
*)kcontrol
->private_value
;
3329 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
3331 uinfo
->value
.integer
.min
= mc
->min
;
3332 uinfo
->value
.integer
.max
= mc
->max
;
3336 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
3339 * snd_soc_get_xr_sx - signed multi register get callback
3340 * @kcontrol: mreg control
3341 * @ucontrol: control element information
3343 * Callback to get the value of a control that can span
3344 * multiple codec registers which together forms a single
3345 * signed value in a MSB/LSB manner. The control supports
3346 * specifying total no of bits used to allow for bitfields
3347 * across the multiple codec registers.
3349 * Returns 0 for success.
3351 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
3352 struct snd_ctl_elem_value
*ucontrol
)
3354 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3355 struct soc_mreg_control
*mc
=
3356 (struct soc_mreg_control
*)kcontrol
->private_value
;
3357 unsigned int regbase
= mc
->regbase
;
3358 unsigned int regcount
= mc
->regcount
;
3359 unsigned int regwshift
= component
->val_bytes
* BITS_PER_BYTE
;
3360 unsigned int regwmask
= (1<<regwshift
)-1;
3361 unsigned int invert
= mc
->invert
;
3362 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3366 unsigned int regval
;
3370 for (i
= 0; i
< regcount
; i
++) {
3371 ret
= snd_soc_component_read(component
, regbase
+i
, ®val
);
3374 val
|= (regval
& regwmask
) << (regwshift
*(regcount
-i
-1));
3377 if (min
< 0 && val
> max
)
3381 ucontrol
->value
.integer
.value
[0] = val
;
3385 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
3388 * snd_soc_put_xr_sx - signed multi register get callback
3389 * @kcontrol: mreg control
3390 * @ucontrol: control element information
3392 * Callback to set the value of a control that can span
3393 * multiple codec registers which together forms a single
3394 * signed value in a MSB/LSB manner. The control supports
3395 * specifying total no of bits used to allow for bitfields
3396 * across the multiple codec registers.
3398 * Returns 0 for success.
3400 int snd_soc_put_xr_sx(struct snd_kcontrol
*kcontrol
,
3401 struct snd_ctl_elem_value
*ucontrol
)
3403 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3404 struct soc_mreg_control
*mc
=
3405 (struct soc_mreg_control
*)kcontrol
->private_value
;
3406 unsigned int regbase
= mc
->regbase
;
3407 unsigned int regcount
= mc
->regcount
;
3408 unsigned int regwshift
= component
->val_bytes
* BITS_PER_BYTE
;
3409 unsigned int regwmask
= (1<<regwshift
)-1;
3410 unsigned int invert
= mc
->invert
;
3411 unsigned long mask
= (1UL<<mc
->nbits
)-1;
3413 long val
= ucontrol
->value
.integer
.value
[0];
3414 unsigned int i
, regval
, regmask
;
3420 for (i
= 0; i
< regcount
; i
++) {
3421 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3422 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
3423 err
= snd_soc_component_update_bits(component
, regbase
+i
,
3431 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
3434 * snd_soc_get_strobe - strobe get callback
3435 * @kcontrol: mixer control
3436 * @ucontrol: control element information
3438 * Callback get the value of a strobe mixer control.
3440 * Returns 0 for success.
3442 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
3443 struct snd_ctl_elem_value
*ucontrol
)
3445 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3446 struct soc_mixer_control
*mc
=
3447 (struct soc_mixer_control
*)kcontrol
->private_value
;
3448 unsigned int reg
= mc
->reg
;
3449 unsigned int shift
= mc
->shift
;
3450 unsigned int mask
= 1 << shift
;
3451 unsigned int invert
= mc
->invert
!= 0;
3455 ret
= snd_soc_component_read(component
, reg
, &val
);
3461 if (shift
!= 0 && val
!= 0)
3463 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
3467 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
3470 * snd_soc_put_strobe - strobe put callback
3471 * @kcontrol: mixer control
3472 * @ucontrol: control element information
3474 * Callback strobe a register bit to high then low (or the inverse)
3475 * in one pass of a single mixer enum control.
3477 * Returns 1 for success.
3479 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
3480 struct snd_ctl_elem_value
*ucontrol
)
3482 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
3483 struct soc_mixer_control
*mc
=
3484 (struct soc_mixer_control
*)kcontrol
->private_value
;
3485 unsigned int reg
= mc
->reg
;
3486 unsigned int shift
= mc
->shift
;
3487 unsigned int mask
= 1 << shift
;
3488 unsigned int invert
= mc
->invert
!= 0;
3489 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
3490 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
3491 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
3494 err
= snd_soc_component_update_bits(component
, reg
, mask
, val1
);
3498 return snd_soc_component_update_bits(component
, reg
, mask
, val2
);
3500 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);
3503 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3505 * @clk_id: DAI specific clock ID
3506 * @freq: new clock frequency in Hz
3507 * @dir: new clock direction - input/output.
3509 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3511 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
3512 unsigned int freq
, int dir
)
3514 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
3515 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
3516 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
3517 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
3522 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
3525 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3527 * @clk_id: DAI specific clock ID
3528 * @source: Source for the clock
3529 * @freq: new clock frequency in Hz
3530 * @dir: new clock direction - input/output.
3532 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3534 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
3535 int source
, unsigned int freq
, int dir
)
3537 if (codec
->driver
->set_sysclk
)
3538 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
3543 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
3546 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3548 * @div_id: DAI specific clock divider ID
3549 * @div: new clock divisor.
3551 * Configures the clock dividers. This is used to derive the best DAI bit and
3552 * frame clocks from the system or master clock. It's best to set the DAI bit
3553 * and frame clocks as low as possible to save system power.
3555 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
3556 int div_id
, int div
)
3558 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
3559 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
3563 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
3566 * snd_soc_dai_set_pll - configure DAI PLL.
3568 * @pll_id: DAI specific PLL ID
3569 * @source: DAI specific source for the PLL
3570 * @freq_in: PLL input clock frequency in Hz
3571 * @freq_out: requested PLL output clock frequency in Hz
3573 * Configures and enables PLL to generate output clock based on input clock.
3575 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
3576 unsigned int freq_in
, unsigned int freq_out
)
3578 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
3579 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
3581 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
3582 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
3587 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
3590 * snd_soc_codec_set_pll - configure codec PLL.
3592 * @pll_id: DAI specific PLL ID
3593 * @source: DAI specific source for the PLL
3594 * @freq_in: PLL input clock frequency in Hz
3595 * @freq_out: requested PLL output clock frequency in Hz
3597 * Configures and enables PLL to generate output clock based on input clock.
3599 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
3600 unsigned int freq_in
, unsigned int freq_out
)
3602 if (codec
->driver
->set_pll
)
3603 return codec
->driver
->set_pll(codec
, pll_id
, source
,
3608 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
3611 * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio.
3613 * @ratio Ratio of BCLK to Sample rate.
3615 * Configures the DAI for a preset BCLK to sample rate ratio.
3617 int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai
*dai
, unsigned int ratio
)
3619 if (dai
->driver
&& dai
->driver
->ops
->set_bclk_ratio
)
3620 return dai
->driver
->ops
->set_bclk_ratio(dai
, ratio
);
3624 EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio
);
3627 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3629 * @fmt: SND_SOC_DAIFMT_ format value.
3631 * Configures the DAI hardware format and clocking.
3633 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
3635 if (dai
->driver
== NULL
)
3637 if (dai
->driver
->ops
->set_fmt
== NULL
)
3639 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
3641 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
3644 * snd_soc_xlate_tdm_slot - generate tx/rx slot mask.
3645 * @slots: Number of slots in use.
3646 * @tx_mask: bitmask representing active TX slots.
3647 * @rx_mask: bitmask representing active RX slots.
3649 * Generates the TDM tx and rx slot default masks for DAI.
3651 static int snd_soc_xlate_tdm_slot_mask(unsigned int slots
,
3652 unsigned int *tx_mask
,
3653 unsigned int *rx_mask
)
3655 if (*tx_mask
|| *rx_mask
)
3661 *tx_mask
= (1 << slots
) - 1;
3662 *rx_mask
= (1 << slots
) - 1;
3668 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3670 * @tx_mask: bitmask representing active TX slots.
3671 * @rx_mask: bitmask representing active RX slots.
3672 * @slots: Number of slots in use.
3673 * @slot_width: Width in bits for each slot.
3675 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3678 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
3679 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
3681 if (dai
->driver
&& dai
->driver
->ops
->xlate_tdm_slot_mask
)
3682 dai
->driver
->ops
->xlate_tdm_slot_mask(slots
,
3683 &tx_mask
, &rx_mask
);
3685 snd_soc_xlate_tdm_slot_mask(slots
, &tx_mask
, &rx_mask
);
3687 dai
->tx_mask
= tx_mask
;
3688 dai
->rx_mask
= rx_mask
;
3690 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
3691 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
3696 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
3699 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3701 * @tx_num: how many TX channels
3702 * @tx_slot: pointer to an array which imply the TX slot number channel
3704 * @rx_num: how many RX channels
3705 * @rx_slot: pointer to an array which imply the RX slot number channel
3708 * configure the relationship between channel number and TDM slot number.
3710 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
3711 unsigned int tx_num
, unsigned int *tx_slot
,
3712 unsigned int rx_num
, unsigned int *rx_slot
)
3714 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
3715 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
3720 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
3723 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3725 * @tristate: tristate enable
3727 * Tristates the DAI so that others can use it.
3729 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
3731 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
3732 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
3736 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
3739 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3741 * @mute: mute enable
3742 * @direction: stream to mute
3744 * Mutes the DAI DAC.
3746 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
,
3752 if (dai
->driver
->ops
->mute_stream
)
3753 return dai
->driver
->ops
->mute_stream(dai
, mute
, direction
);
3754 else if (direction
== SNDRV_PCM_STREAM_PLAYBACK
&&
3755 dai
->driver
->ops
->digital_mute
)
3756 return dai
->driver
->ops
->digital_mute(dai
, mute
);
3760 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
3762 static int snd_soc_init_multicodec(struct snd_soc_card
*card
,
3763 struct snd_soc_dai_link
*dai_link
)
3765 /* Legacy codec/codec_dai link is a single entry in multicodec */
3766 if (dai_link
->codec_name
|| dai_link
->codec_of_node
||
3767 dai_link
->codec_dai_name
) {
3768 dai_link
->num_codecs
= 1;
3770 dai_link
->codecs
= devm_kzalloc(card
->dev
,
3771 sizeof(struct snd_soc_dai_link_component
),
3773 if (!dai_link
->codecs
)
3776 dai_link
->codecs
[0].name
= dai_link
->codec_name
;
3777 dai_link
->codecs
[0].of_node
= dai_link
->codec_of_node
;
3778 dai_link
->codecs
[0].dai_name
= dai_link
->codec_dai_name
;
3781 if (!dai_link
->codecs
) {
3782 dev_err(card
->dev
, "ASoC: DAI link has no CODECs\n");
3790 * snd_soc_register_card - Register a card with the ASoC core
3792 * @card: Card to register
3795 int snd_soc_register_card(struct snd_soc_card
*card
)
3799 if (!card
->name
|| !card
->dev
)
3802 for (i
= 0; i
< card
->num_links
; i
++) {
3803 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
3805 ret
= snd_soc_init_multicodec(card
, link
);
3807 dev_err(card
->dev
, "ASoC: failed to init multicodec\n");
3811 for (j
= 0; j
< link
->num_codecs
; j
++) {
3813 * Codec must be specified by 1 of name or OF node,
3814 * not both or neither.
3816 if (!!link
->codecs
[j
].name
==
3817 !!link
->codecs
[j
].of_node
) {
3818 dev_err(card
->dev
, "ASoC: Neither/both codec name/of_node are set for %s\n",
3822 /* Codec DAI name must be specified */
3823 if (!link
->codecs
[j
].dai_name
) {
3824 dev_err(card
->dev
, "ASoC: codec_dai_name not set for %s\n",
3831 * Platform may be specified by either name or OF node, but
3832 * can be left unspecified, and a dummy platform will be used.
3834 if (link
->platform_name
&& link
->platform_of_node
) {
3836 "ASoC: Both platform name/of_node are set for %s\n",
3842 * CPU device may be specified by either name or OF node, but
3843 * can be left unspecified, and will be matched based on DAI
3846 if (link
->cpu_name
&& link
->cpu_of_node
) {
3848 "ASoC: Neither/both cpu name/of_node are set for %s\n",
3853 * At least one of CPU DAI name or CPU device name/node must be
3856 if (!link
->cpu_dai_name
&&
3857 !(link
->cpu_name
|| link
->cpu_of_node
)) {
3859 "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3865 dev_set_drvdata(card
->dev
, card
);
3867 snd_soc_initialize_card_lists(card
);
3869 soc_init_card_debugfs(card
);
3871 card
->rtd
= devm_kzalloc(card
->dev
,
3872 sizeof(struct snd_soc_pcm_runtime
) *
3873 (card
->num_links
+ card
->num_aux_devs
),
3875 if (card
->rtd
== NULL
)
3878 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
3880 for (i
= 0; i
< card
->num_links
; i
++) {
3881 card
->rtd
[i
].card
= card
;
3882 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
3883 card
->rtd
[i
].codec_dais
= devm_kzalloc(card
->dev
,
3884 sizeof(struct snd_soc_dai
*) *
3885 (card
->rtd
[i
].dai_link
->num_codecs
),
3887 if (card
->rtd
[i
].codec_dais
== NULL
)
3891 for (i
= 0; i
< card
->num_aux_devs
; i
++)
3892 card
->rtd_aux
[i
].card
= card
;
3894 INIT_LIST_HEAD(&card
->dapm_dirty
);
3895 card
->instantiated
= 0;
3896 mutex_init(&card
->mutex
);
3897 mutex_init(&card
->dapm_mutex
);
3899 ret
= snd_soc_instantiate_card(card
);
3901 soc_cleanup_card_debugfs(card
);
3903 /* deactivate pins to sleep state */
3904 for (i
= 0; i
< card
->num_rtd
; i
++) {
3905 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
3906 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3909 for (j
= 0; j
< rtd
->num_codecs
; j
++) {
3910 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[j
];
3911 if (!codec_dai
->active
)
3912 pinctrl_pm_select_sleep_state(codec_dai
->dev
);
3915 if (!cpu_dai
->active
)
3916 pinctrl_pm_select_sleep_state(cpu_dai
->dev
);
3921 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
3924 * snd_soc_unregister_card - Unregister a card with the ASoC core
3926 * @card: Card to unregister
3929 int snd_soc_unregister_card(struct snd_soc_card
*card
)
3931 if (card
->instantiated
)
3932 soc_cleanup_card_resources(card
);
3933 dev_dbg(card
->dev
, "ASoC: Unregistered card '%s'\n", card
->name
);
3937 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
3940 * Simplify DAI link configuration by removing ".-1" from device names
3941 * and sanitizing names.
3943 static char *fmt_single_name(struct device
*dev
, int *id
)
3945 char *found
, name
[NAME_SIZE
];
3948 if (dev_name(dev
) == NULL
)
3951 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
3953 /* are we a "%s.%d" name (platform and SPI components) */
3954 found
= strstr(name
, dev
->driver
->name
);
3957 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
3959 /* discard ID from name if ID == -1 */
3961 found
[strlen(dev
->driver
->name
)] = '\0';
3965 /* I2C component devices are named "bus-addr" */
3966 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
3967 char tmp
[NAME_SIZE
];
3969 /* create unique ID number from I2C addr and bus */
3970 *id
= ((id1
& 0xffff) << 16) + id2
;
3972 /* sanitize component name for DAI link creation */
3973 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
3974 strlcpy(name
, tmp
, NAME_SIZE
);
3979 return kstrdup(name
, GFP_KERNEL
);
3983 * Simplify DAI link naming for single devices with multiple DAIs by removing
3984 * any ".-1" and using the DAI name (instead of device name).
3986 static inline char *fmt_multiple_name(struct device
*dev
,
3987 struct snd_soc_dai_driver
*dai_drv
)
3989 if (dai_drv
->name
== NULL
) {
3991 "ASoC: error - multiple DAI %s registered with no name\n",
3996 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
4000 * snd_soc_unregister_dai - Unregister DAIs from the ASoC core
4002 * @component: The component for which the DAIs should be unregistered
4004 static void snd_soc_unregister_dais(struct snd_soc_component
*component
)
4006 struct snd_soc_dai
*dai
, *_dai
;
4008 list_for_each_entry_safe(dai
, _dai
, &component
->dai_list
, list
) {
4009 dev_dbg(component
->dev
, "ASoC: Unregistered DAI '%s'\n",
4011 list_del(&dai
->list
);
4018 * snd_soc_register_dais - Register a DAI with the ASoC core
4020 * @component: The component the DAIs are registered for
4021 * @dai_drv: DAI driver to use for the DAIs
4022 * @count: Number of DAIs
4023 * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the
4026 static int snd_soc_register_dais(struct snd_soc_component
*component
,
4027 struct snd_soc_dai_driver
*dai_drv
, size_t count
,
4028 bool legacy_dai_naming
)
4030 struct device
*dev
= component
->dev
;
4031 struct snd_soc_dai
*dai
;
4035 dev_dbg(dev
, "ASoC: dai register %s #%Zu\n", dev_name(dev
), count
);
4037 component
->dai_drv
= dai_drv
;
4038 component
->num_dai
= count
;
4040 for (i
= 0; i
< count
; i
++) {
4042 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
4049 * Back in the old days when we still had component-less DAIs,
4050 * instead of having a static name, component-less DAIs would
4051 * inherit the name of the parent device so it is possible to
4052 * register multiple instances of the DAI. We still need to keep
4053 * the same naming style even though those DAIs are not
4054 * component-less anymore.
4056 if (count
== 1 && legacy_dai_naming
) {
4057 dai
->name
= fmt_single_name(dev
, &dai
->id
);
4059 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
4061 dai
->id
= dai_drv
[i
].id
;
4065 if (dai
->name
== NULL
) {
4071 dai
->component
= component
;
4073 dai
->driver
= &dai_drv
[i
];
4074 if (!dai
->driver
->ops
)
4075 dai
->driver
->ops
= &null_dai_ops
;
4077 list_add(&dai
->list
, &component
->dai_list
);
4079 dev_dbg(dev
, "ASoC: Registered DAI '%s'\n", dai
->name
);
4085 snd_soc_unregister_dais(component
);
4090 static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context
*dapm
,
4091 enum snd_soc_dapm_type type
, int subseq
)
4093 struct snd_soc_component
*component
= dapm
->component
;
4095 component
->driver
->seq_notifier(component
, type
, subseq
);
4098 static int snd_soc_component_stream_event(struct snd_soc_dapm_context
*dapm
,
4101 struct snd_soc_component
*component
= dapm
->component
;
4103 return component
->driver
->stream_event(component
, event
);
4106 static int snd_soc_component_initialize(struct snd_soc_component
*component
,
4107 const struct snd_soc_component_driver
*driver
, struct device
*dev
)
4109 struct snd_soc_dapm_context
*dapm
;
4111 component
->name
= fmt_single_name(dev
, &component
->id
);
4112 if (!component
->name
) {
4113 dev_err(dev
, "ASoC: Failed to allocate name\n");
4117 component
->dev
= dev
;
4118 component
->driver
= driver
;
4120 if (!component
->dapm_ptr
)
4121 component
->dapm_ptr
= &component
->dapm
;
4123 dapm
= component
->dapm_ptr
;
4125 dapm
->component
= component
;
4126 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
4127 if (driver
->seq_notifier
)
4128 dapm
->seq_notifier
= snd_soc_component_seq_notifier
;
4129 if (driver
->stream_event
)
4130 dapm
->stream_event
= snd_soc_component_stream_event
;
4132 INIT_LIST_HEAD(&component
->dai_list
);
4133 mutex_init(&component
->io_mutex
);
4138 static void snd_soc_component_add_unlocked(struct snd_soc_component
*component
)
4140 list_add(&component
->list
, &component_list
);
4143 static void snd_soc_component_add(struct snd_soc_component
*component
)
4145 mutex_lock(&client_mutex
);
4146 snd_soc_component_add_unlocked(component
);
4147 mutex_unlock(&client_mutex
);
4150 static void snd_soc_component_cleanup(struct snd_soc_component
*component
)
4152 snd_soc_unregister_dais(component
);
4153 kfree(component
->name
);
4156 static void snd_soc_component_del_unlocked(struct snd_soc_component
*component
)
4158 list_del(&component
->list
);
4161 static void snd_soc_component_del(struct snd_soc_component
*component
)
4163 mutex_lock(&client_mutex
);
4164 snd_soc_component_del_unlocked(component
);
4165 mutex_unlock(&client_mutex
);
4168 int snd_soc_register_component(struct device
*dev
,
4169 const struct snd_soc_component_driver
*cmpnt_drv
,
4170 struct snd_soc_dai_driver
*dai_drv
,
4173 struct snd_soc_component
*cmpnt
;
4176 cmpnt
= kzalloc(sizeof(*cmpnt
), GFP_KERNEL
);
4178 dev_err(dev
, "ASoC: Failed to allocate memory\n");
4182 ret
= snd_soc_component_initialize(cmpnt
, cmpnt_drv
, dev
);
4186 cmpnt
->ignore_pmdown_time
= true;
4187 cmpnt
->registered_as_component
= true;
4189 ret
= snd_soc_register_dais(cmpnt
, dai_drv
, num_dai
, true);
4191 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4195 snd_soc_component_add(cmpnt
);
4200 snd_soc_component_cleanup(cmpnt
);
4205 EXPORT_SYMBOL_GPL(snd_soc_register_component
);
4208 * snd_soc_unregister_component - Unregister a component from the ASoC core
4211 void snd_soc_unregister_component(struct device
*dev
)
4213 struct snd_soc_component
*cmpnt
;
4215 list_for_each_entry(cmpnt
, &component_list
, list
) {
4216 if (dev
== cmpnt
->dev
&& cmpnt
->registered_as_component
)
4222 snd_soc_component_del(cmpnt
);
4223 snd_soc_component_cleanup(cmpnt
);
4226 EXPORT_SYMBOL_GPL(snd_soc_unregister_component
);
4228 static int snd_soc_platform_drv_write(struct snd_soc_component
*component
,
4229 unsigned int reg
, unsigned int val
)
4231 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
4233 return platform
->driver
->write(platform
, reg
, val
);
4236 static int snd_soc_platform_drv_read(struct snd_soc_component
*component
,
4237 unsigned int reg
, unsigned int *val
)
4239 struct snd_soc_platform
*platform
= snd_soc_component_to_platform(component
);
4241 *val
= platform
->driver
->read(platform
, reg
);
4247 * snd_soc_add_platform - Add a platform to the ASoC core
4248 * @dev: The parent device for the platform
4249 * @platform: The platform to add
4250 * @platform_driver: The driver for the platform
4252 int snd_soc_add_platform(struct device
*dev
, struct snd_soc_platform
*platform
,
4253 const struct snd_soc_platform_driver
*platform_drv
)
4257 ret
= snd_soc_component_initialize(&platform
->component
,
4258 &platform_drv
->component_driver
, dev
);
4262 platform
->dev
= dev
;
4263 platform
->driver
= platform_drv
;
4264 if (platform_drv
->write
)
4265 platform
->component
.write
= snd_soc_platform_drv_write
;
4266 if (platform_drv
->read
)
4267 platform
->component
.read
= snd_soc_platform_drv_read
;
4269 mutex_lock(&client_mutex
);
4270 snd_soc_component_add_unlocked(&platform
->component
);
4271 list_add(&platform
->list
, &platform_list
);
4272 mutex_unlock(&client_mutex
);
4274 dev_dbg(dev
, "ASoC: Registered platform '%s'\n",
4275 platform
->component
.name
);
4279 EXPORT_SYMBOL_GPL(snd_soc_add_platform
);
4282 * snd_soc_register_platform - Register a platform with the ASoC core
4284 * @platform: platform to register
4286 int snd_soc_register_platform(struct device
*dev
,
4287 const struct snd_soc_platform_driver
*platform_drv
)
4289 struct snd_soc_platform
*platform
;
4292 dev_dbg(dev
, "ASoC: platform register %s\n", dev_name(dev
));
4294 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
4295 if (platform
== NULL
)
4298 ret
= snd_soc_add_platform(dev
, platform
, platform_drv
);
4304 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
4307 * snd_soc_remove_platform - Remove a platform from the ASoC core
4308 * @platform: the platform to remove
4310 void snd_soc_remove_platform(struct snd_soc_platform
*platform
)
4313 mutex_lock(&client_mutex
);
4314 list_del(&platform
->list
);
4315 snd_soc_component_del_unlocked(&platform
->component
);
4316 mutex_unlock(&client_mutex
);
4318 snd_soc_component_cleanup(&platform
->component
);
4320 dev_dbg(platform
->dev
, "ASoC: Unregistered platform '%s'\n",
4321 platform
->component
.name
);
4323 EXPORT_SYMBOL_GPL(snd_soc_remove_platform
);
4325 struct snd_soc_platform
*snd_soc_lookup_platform(struct device
*dev
)
4327 struct snd_soc_platform
*platform
;
4329 list_for_each_entry(platform
, &platform_list
, list
) {
4330 if (dev
== platform
->dev
)
4336 EXPORT_SYMBOL_GPL(snd_soc_lookup_platform
);
4339 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
4341 * @platform: platform to unregister
4343 void snd_soc_unregister_platform(struct device
*dev
)
4345 struct snd_soc_platform
*platform
;
4347 platform
= snd_soc_lookup_platform(dev
);
4351 snd_soc_remove_platform(platform
);
4354 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
4356 static u64 codec_format_map
[] = {
4357 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
4358 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
4359 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
4360 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
4361 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
4362 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
4363 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4364 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
4365 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
4366 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
4367 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
4368 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
4369 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
4370 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
4371 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
4372 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
4375 /* Fix up the DAI formats for endianness: codecs don't actually see
4376 * the endianness of the data but we're using the CPU format
4377 * definitions which do need to include endianness so we ensure that
4378 * codec DAIs always have both big and little endian variants set.
4380 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
4384 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
4385 if (stream
->formats
& codec_format_map
[i
])
4386 stream
->formats
|= codec_format_map
[i
];
4389 static int snd_soc_codec_drv_write(struct snd_soc_component
*component
,
4390 unsigned int reg
, unsigned int val
)
4392 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
4394 return codec
->driver
->write(codec
, reg
, val
);
4397 static int snd_soc_codec_drv_read(struct snd_soc_component
*component
,
4398 unsigned int reg
, unsigned int *val
)
4400 struct snd_soc_codec
*codec
= snd_soc_component_to_codec(component
);
4402 *val
= codec
->driver
->read(codec
, reg
);
4407 static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context
*dapm
,
4408 enum snd_soc_bias_level level
)
4410 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
4412 return codec
->driver
->set_bias_level(codec
, level
);
4416 * snd_soc_register_codec - Register a codec with the ASoC core
4418 * @codec: codec to register
4420 int snd_soc_register_codec(struct device
*dev
,
4421 const struct snd_soc_codec_driver
*codec_drv
,
4422 struct snd_soc_dai_driver
*dai_drv
,
4425 struct snd_soc_codec
*codec
;
4426 struct snd_soc_dai
*dai
;
4427 struct regmap
*regmap
;
4430 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
4432 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
4436 codec
->component
.dapm_ptr
= &codec
->dapm
;
4438 ret
= snd_soc_component_initialize(&codec
->component
,
4439 &codec_drv
->component_driver
, dev
);
4443 if (codec_drv
->write
)
4444 codec
->component
.write
= snd_soc_codec_drv_write
;
4445 if (codec_drv
->read
)
4446 codec
->component
.read
= snd_soc_codec_drv_read
;
4447 codec
->component
.ignore_pmdown_time
= codec_drv
->ignore_pmdown_time
;
4448 codec
->dapm
.codec
= codec
;
4449 if (codec_drv
->seq_notifier
)
4450 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
4451 if (codec_drv
->set_bias_level
)
4452 codec
->dapm
.set_bias_level
= snd_soc_codec_set_bias_level
;
4454 codec
->driver
= codec_drv
;
4455 codec
->component
.val_bytes
= codec_drv
->reg_word_size
;
4456 mutex_init(&codec
->mutex
);
4458 if (!codec
->component
.write
) {
4459 if (codec_drv
->get_regmap
)
4460 regmap
= codec_drv
->get_regmap(dev
);
4462 regmap
= dev_get_regmap(dev
, NULL
);
4465 ret
= snd_soc_component_init_io(&codec
->component
,
4469 "Failed to set cache I/O:%d\n",
4476 for (i
= 0; i
< num_dai
; i
++) {
4477 fixup_codec_formats(&dai_drv
[i
].playback
);
4478 fixup_codec_formats(&dai_drv
[i
].capture
);
4481 ret
= snd_soc_register_dais(&codec
->component
, dai_drv
, num_dai
, false);
4483 dev_err(dev
, "ASoC: Failed to regster DAIs: %d\n", ret
);
4487 list_for_each_entry(dai
, &codec
->component
.dai_list
, list
)
4490 mutex_lock(&client_mutex
);
4491 snd_soc_component_add_unlocked(&codec
->component
);
4492 list_add(&codec
->list
, &codec_list
);
4493 mutex_unlock(&client_mutex
);
4495 dev_dbg(codec
->dev
, "ASoC: Registered codec '%s'\n",
4496 codec
->component
.name
);
4500 snd_soc_component_cleanup(&codec
->component
);
4505 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
4508 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4510 * @codec: codec to unregister
4512 void snd_soc_unregister_codec(struct device
*dev
)
4514 struct snd_soc_codec
*codec
;
4516 list_for_each_entry(codec
, &codec_list
, list
) {
4517 if (dev
== codec
->dev
)
4524 mutex_lock(&client_mutex
);
4525 list_del(&codec
->list
);
4526 snd_soc_component_del_unlocked(&codec
->component
);
4527 mutex_unlock(&client_mutex
);
4529 dev_dbg(codec
->dev
, "ASoC: Unregistered codec '%s'\n",
4530 codec
->component
.name
);
4532 snd_soc_component_cleanup(&codec
->component
);
4533 snd_soc_cache_exit(codec
);
4536 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
4538 /* Retrieve a card's name from device tree */
4539 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
4540 const char *propname
)
4542 struct device_node
*np
;
4546 pr_err("card->dev is not set before calling %s\n", __func__
);
4550 np
= card
->dev
->of_node
;
4552 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
4554 * EINVAL means the property does not exist. This is fine providing
4555 * card->name was previously set, which is checked later in
4556 * snd_soc_register_card.
4558 if (ret
< 0 && ret
!= -EINVAL
) {
4560 "ASoC: Property '%s' could not be read: %d\n",
4567 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
4569 static const struct snd_soc_dapm_widget simple_widgets
[] = {
4570 SND_SOC_DAPM_MIC("Microphone", NULL
),
4571 SND_SOC_DAPM_LINE("Line", NULL
),
4572 SND_SOC_DAPM_HP("Headphone", NULL
),
4573 SND_SOC_DAPM_SPK("Speaker", NULL
),
4576 int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card
*card
,
4577 const char *propname
)
4579 struct device_node
*np
= card
->dev
->of_node
;
4580 struct snd_soc_dapm_widget
*widgets
;
4581 const char *template, *wname
;
4582 int i
, j
, num_widgets
, ret
;
4584 num_widgets
= of_property_count_strings(np
, propname
);
4585 if (num_widgets
< 0) {
4587 "ASoC: Property '%s' does not exist\n", propname
);
4590 if (num_widgets
& 1) {
4592 "ASoC: Property '%s' length is not even\n", propname
);
4598 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4603 widgets
= devm_kcalloc(card
->dev
, num_widgets
, sizeof(*widgets
),
4607 "ASoC: Could not allocate memory for widgets\n");
4611 for (i
= 0; i
< num_widgets
; i
++) {
4612 ret
= of_property_read_string_index(np
, propname
,
4616 "ASoC: Property '%s' index %d read error:%d\n",
4617 propname
, 2 * i
, ret
);
4621 for (j
= 0; j
< ARRAY_SIZE(simple_widgets
); j
++) {
4622 if (!strncmp(template, simple_widgets
[j
].name
,
4623 strlen(simple_widgets
[j
].name
))) {
4624 widgets
[i
] = simple_widgets
[j
];
4629 if (j
>= ARRAY_SIZE(simple_widgets
)) {
4631 "ASoC: DAPM widget '%s' is not supported\n",
4636 ret
= of_property_read_string_index(np
, propname
,
4641 "ASoC: Property '%s' index %d read error:%d\n",
4642 propname
, (2 * i
) + 1, ret
);
4646 widgets
[i
].name
= wname
;
4649 card
->dapm_widgets
= widgets
;
4650 card
->num_dapm_widgets
= num_widgets
;
4654 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets
);
4656 int snd_soc_of_parse_tdm_slot(struct device_node
*np
,
4657 unsigned int *slots
,
4658 unsigned int *slot_width
)
4663 if (of_property_read_bool(np
, "dai-tdm-slot-num")) {
4664 ret
= of_property_read_u32(np
, "dai-tdm-slot-num", &val
);
4672 if (of_property_read_bool(np
, "dai-tdm-slot-width")) {
4673 ret
= of_property_read_u32(np
, "dai-tdm-slot-width", &val
);
4683 EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot
);
4685 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
4686 const char *propname
)
4688 struct device_node
*np
= card
->dev
->of_node
;
4690 struct snd_soc_dapm_route
*routes
;
4693 num_routes
= of_property_count_strings(np
, propname
);
4694 if (num_routes
< 0 || num_routes
& 1) {
4696 "ASoC: Property '%s' does not exist or its length is not even\n",
4702 dev_err(card
->dev
, "ASoC: Property '%s's length is zero\n",
4707 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
4711 "ASoC: Could not allocate DAPM route table\n");
4715 for (i
= 0; i
< num_routes
; i
++) {
4716 ret
= of_property_read_string_index(np
, propname
,
4717 2 * i
, &routes
[i
].sink
);
4720 "ASoC: Property '%s' index %d could not be read: %d\n",
4721 propname
, 2 * i
, ret
);
4724 ret
= of_property_read_string_index(np
, propname
,
4725 (2 * i
) + 1, &routes
[i
].source
);
4728 "ASoC: Property '%s' index %d could not be read: %d\n",
4729 propname
, (2 * i
) + 1, ret
);
4734 card
->num_dapm_routes
= num_routes
;
4735 card
->dapm_routes
= routes
;
4739 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
4741 unsigned int snd_soc_of_parse_daifmt(struct device_node
*np
,
4743 struct device_node
**bitclkmaster
,
4744 struct device_node
**framemaster
)
4748 unsigned int format
= 0;
4754 } of_fmt_table
[] = {
4755 { "i2s", SND_SOC_DAIFMT_I2S
},
4756 { "right_j", SND_SOC_DAIFMT_RIGHT_J
},
4757 { "left_j", SND_SOC_DAIFMT_LEFT_J
},
4758 { "dsp_a", SND_SOC_DAIFMT_DSP_A
},
4759 { "dsp_b", SND_SOC_DAIFMT_DSP_B
},
4760 { "ac97", SND_SOC_DAIFMT_AC97
},
4761 { "pdm", SND_SOC_DAIFMT_PDM
},
4762 { "msb", SND_SOC_DAIFMT_MSB
},
4763 { "lsb", SND_SOC_DAIFMT_LSB
},
4770 * check "[prefix]format = xxx"
4771 * SND_SOC_DAIFMT_FORMAT_MASK area
4773 snprintf(prop
, sizeof(prop
), "%sformat", prefix
);
4774 ret
= of_property_read_string(np
, prop
, &str
);
4776 for (i
= 0; i
< ARRAY_SIZE(of_fmt_table
); i
++) {
4777 if (strcmp(str
, of_fmt_table
[i
].name
) == 0) {
4778 format
|= of_fmt_table
[i
].val
;
4785 * check "[prefix]continuous-clock"
4786 * SND_SOC_DAIFMT_CLOCK_MASK area
4788 snprintf(prop
, sizeof(prop
), "%scontinuous-clock", prefix
);
4789 if (of_get_property(np
, prop
, NULL
))
4790 format
|= SND_SOC_DAIFMT_CONT
;
4792 format
|= SND_SOC_DAIFMT_GATED
;
4795 * check "[prefix]bitclock-inversion"
4796 * check "[prefix]frame-inversion"
4797 * SND_SOC_DAIFMT_INV_MASK area
4799 snprintf(prop
, sizeof(prop
), "%sbitclock-inversion", prefix
);
4800 bit
= !!of_get_property(np
, prop
, NULL
);
4802 snprintf(prop
, sizeof(prop
), "%sframe-inversion", prefix
);
4803 frame
= !!of_get_property(np
, prop
, NULL
);
4805 switch ((bit
<< 4) + frame
) {
4807 format
|= SND_SOC_DAIFMT_IB_IF
;
4810 format
|= SND_SOC_DAIFMT_IB_NF
;
4813 format
|= SND_SOC_DAIFMT_NB_IF
;
4816 /* SND_SOC_DAIFMT_NB_NF is default */
4821 * check "[prefix]bitclock-master"
4822 * check "[prefix]frame-master"
4823 * SND_SOC_DAIFMT_MASTER_MASK area
4825 snprintf(prop
, sizeof(prop
), "%sbitclock-master", prefix
);
4826 bit
= !!of_get_property(np
, prop
, NULL
);
4827 if (bit
&& bitclkmaster
)
4828 *bitclkmaster
= of_parse_phandle(np
, prop
, 0);
4830 snprintf(prop
, sizeof(prop
), "%sframe-master", prefix
);
4831 frame
= !!of_get_property(np
, prop
, NULL
);
4832 if (frame
&& framemaster
)
4833 *framemaster
= of_parse_phandle(np
, prop
, 0);
4835 switch ((bit
<< 4) + frame
) {
4837 format
|= SND_SOC_DAIFMT_CBM_CFM
;
4840 format
|= SND_SOC_DAIFMT_CBM_CFS
;
4843 format
|= SND_SOC_DAIFMT_CBS_CFM
;
4846 format
|= SND_SOC_DAIFMT_CBS_CFS
;
4852 EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt
);
4854 int snd_soc_of_get_dai_name(struct device_node
*of_node
,
4855 const char **dai_name
)
4857 struct snd_soc_component
*pos
;
4858 struct of_phandle_args args
;
4861 ret
= of_parse_phandle_with_args(of_node
, "sound-dai",
4862 "#sound-dai-cells", 0, &args
);
4866 ret
= -EPROBE_DEFER
;
4868 mutex_lock(&client_mutex
);
4869 list_for_each_entry(pos
, &component_list
, list
) {
4870 if (pos
->dev
->of_node
!= args
.np
)
4873 if (pos
->driver
->of_xlate_dai_name
) {
4874 ret
= pos
->driver
->of_xlate_dai_name(pos
, &args
, dai_name
);
4878 switch (args
.args_count
) {
4880 id
= 0; /* same as dai_drv[0] */
4890 if (id
< 0 || id
>= pos
->num_dai
) {
4897 *dai_name
= pos
->dai_drv
[id
].name
;
4899 *dai_name
= pos
->name
;
4904 mutex_unlock(&client_mutex
);
4906 of_node_put(args
.np
);
4910 EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name
);
4912 static int __init
snd_soc_init(void)
4914 #ifdef CONFIG_DEBUG_FS
4915 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
4916 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
4917 pr_warn("ASoC: Failed to create debugfs directory\n");
4918 snd_soc_debugfs_root
= NULL
;
4921 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
4923 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4925 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
4927 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4929 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
4930 &platform_list_fops
))
4931 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4934 snd_soc_util_init();
4936 return platform_driver_register(&soc_driver
);
4938 module_init(snd_soc_init
);
4940 static void __exit
snd_soc_exit(void)
4942 snd_soc_util_exit();
4944 #ifdef CONFIG_DEBUG_FS
4945 debugfs_remove_recursive(snd_soc_debugfs_root
);
4947 platform_driver_unregister(&soc_driver
);
4949 module_exit(snd_soc_exit
);
4951 /* Module information */
4952 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4953 MODULE_DESCRIPTION("ALSA SoC Core");
4954 MODULE_LICENSE("GPL");
4955 MODULE_ALIAS("platform:soc-audio");