2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/initval.h>
44 #define CREATE_TRACE_POINTS
45 #include <trace/events/asoc.h>
49 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
51 #ifdef CONFIG_DEBUG_FS
52 struct dentry
*snd_soc_debugfs_root
;
53 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
56 static DEFINE_MUTEX(client_mutex
);
57 static LIST_HEAD(card_list
);
58 static LIST_HEAD(dai_list
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
62 int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
);
65 * This is a timeout to do a DAPM powerdown after a stream is closed().
66 * It can be used to eliminate pops between different playback streams, e.g.
67 * between two audio tracks.
69 static int pmdown_time
= 5000;
70 module_param(pmdown_time
, int, 0);
71 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
73 /* returns the minimum number of bytes needed to represent
74 * a particular given value */
75 static int min_bytes_needed(unsigned long val
)
80 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
83 c
= (sizeof val
* 8) - c
;
91 /* fill buf which is 'len' bytes with a formatted
92 * string of the form 'reg: value\n' */
93 static int format_register_str(struct snd_soc_codec
*codec
,
94 unsigned int reg
, char *buf
, size_t len
)
96 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
97 int regsize
= codec
->driver
->reg_word_size
* 2;
100 char regbuf
[regsize
+ 1];
102 /* since tmpbuf is allocated on the stack, warn the callers if they
103 * try to abuse this function */
106 /* +2 for ': ' and + 1 for '\n' */
107 if (wordsize
+ regsize
+ 2 + 1 != len
)
110 ret
= snd_soc_read(codec
, reg
);
112 memset(regbuf
, 'X', regsize
);
113 regbuf
[regsize
] = '\0';
115 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
118 /* prepare the buffer */
119 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
120 /* copy it back to the caller without the '\0' */
121 memcpy(buf
, tmpbuf
, len
);
126 /* codec register dump */
127 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
128 size_t count
, loff_t pos
)
131 int wordsize
, regsize
;
136 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
137 regsize
= codec
->driver
->reg_word_size
* 2;
139 len
= wordsize
+ regsize
+ 2 + 1;
141 if (!codec
->driver
->reg_cache_size
)
144 if (codec
->driver
->reg_cache_step
)
145 step
= codec
->driver
->reg_cache_step
;
147 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
148 if (!snd_soc_codec_readable_register(codec
, i
))
150 if (codec
->driver
->display_register
) {
151 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
152 PAGE_SIZE
- count
, i
);
154 /* only support larger than PAGE_SIZE bytes debugfs
155 * entries for the default case */
157 if (total
+ len
>= count
- 1)
159 format_register_str(codec
, i
, buf
+ total
, len
);
166 total
= min(total
, count
- 1);
171 static ssize_t
codec_reg_show(struct device
*dev
,
172 struct device_attribute
*attr
, char *buf
)
174 struct snd_soc_pcm_runtime
*rtd
=
175 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
177 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
180 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
182 static ssize_t
pmdown_time_show(struct device
*dev
,
183 struct device_attribute
*attr
, char *buf
)
185 struct snd_soc_pcm_runtime
*rtd
=
186 container_of(dev
, struct snd_soc_pcm_runtime
, 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
=
196 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
199 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
206 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
208 #ifdef CONFIG_DEBUG_FS
209 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
211 file
->private_data
= inode
->i_private
;
215 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
216 size_t count
, loff_t
*ppos
)
219 struct snd_soc_codec
*codec
= file
->private_data
;
222 if (*ppos
< 0 || !count
)
225 buf
= kmalloc(count
, GFP_KERNEL
);
229 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
231 if (copy_to_user(user_buf
, buf
, ret
)) {
242 static ssize_t
codec_reg_write_file(struct file
*file
,
243 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
248 unsigned long reg
, value
;
249 struct snd_soc_codec
*codec
= file
->private_data
;
251 buf_size
= min(count
, (sizeof(buf
)-1));
252 if (copy_from_user(buf
, user_buf
, buf_size
))
256 while (*start
== ' ')
258 reg
= simple_strtoul(start
, &start
, 16);
259 while (*start
== ' ')
261 if (strict_strtoul(start
, 16, &value
))
264 /* Userspace has been fiddling around behind the kernel's back */
265 add_taint(TAINT_USER
);
267 snd_soc_write(codec
, reg
, value
);
271 static const struct file_operations codec_reg_fops
= {
272 .open
= codec_reg_open_file
,
273 .read
= codec_reg_read_file
,
274 .write
= codec_reg_write_file
,
275 .llseek
= default_llseek
,
278 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
280 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
282 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
284 if (!codec
->debugfs_codec_root
) {
286 "ASoC: Failed to create codec debugfs directory\n");
290 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
292 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
295 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
296 codec
->debugfs_codec_root
,
297 codec
, &codec_reg_fops
);
298 if (!codec
->debugfs_reg
)
300 "ASoC: Failed to create codec register debugfs file\n");
302 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
305 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
307 debugfs_remove_recursive(codec
->debugfs_codec_root
);
310 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
311 size_t count
, loff_t
*ppos
)
313 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
314 ssize_t len
, ret
= 0;
315 struct snd_soc_codec
*codec
;
320 list_for_each_entry(codec
, &codec_list
, list
) {
321 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
325 if (ret
> PAGE_SIZE
) {
332 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
339 static const struct file_operations codec_list_fops
= {
340 .read
= codec_list_read_file
,
341 .llseek
= default_llseek
,/* read accesses f_pos */
344 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
345 size_t count
, loff_t
*ppos
)
347 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
348 ssize_t len
, ret
= 0;
349 struct snd_soc_dai
*dai
;
354 list_for_each_entry(dai
, &dai_list
, list
) {
355 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
358 if (ret
> PAGE_SIZE
) {
364 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
371 static const struct file_operations dai_list_fops
= {
372 .read
= dai_list_read_file
,
373 .llseek
= default_llseek
,/* read accesses f_pos */
376 static ssize_t
platform_list_read_file(struct file
*file
,
377 char __user
*user_buf
,
378 size_t count
, loff_t
*ppos
)
380 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
381 ssize_t len
, ret
= 0;
382 struct snd_soc_platform
*platform
;
387 list_for_each_entry(platform
, &platform_list
, list
) {
388 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
392 if (ret
> PAGE_SIZE
) {
398 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
405 static const struct file_operations platform_list_fops
= {
406 .read
= platform_list_read_file
,
407 .llseek
= default_llseek
,/* read accesses f_pos */
410 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
412 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
413 snd_soc_debugfs_root
);
414 if (!card
->debugfs_card_root
) {
416 "ASoC: Failed to create card debugfs directory\n");
420 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
421 card
->debugfs_card_root
,
423 if (!card
->debugfs_pop_time
)
425 "Failed to create pop time debugfs file\n");
428 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
430 debugfs_remove_recursive(card
->debugfs_card_root
);
435 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
439 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
443 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
447 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
452 #ifdef CONFIG_SND_SOC_AC97_BUS
453 /* unregister ac97 codec */
454 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
456 if (codec
->ac97
->dev
.bus
)
457 device_unregister(&codec
->ac97
->dev
);
461 /* stop no dev release warning */
462 static void soc_ac97_device_release(struct device
*dev
){}
464 /* register ac97 codec to bus */
465 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
469 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
470 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
471 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
473 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
474 codec
->card
->snd_card
->number
, 0, codec
->name
);
475 err
= device_register(&codec
->ac97
->dev
);
477 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
478 codec
->ac97
->dev
.bus
= NULL
;
485 #ifdef CONFIG_PM_SLEEP
486 /* powers down audio subsystem for suspend */
487 int snd_soc_suspend(struct device
*dev
)
489 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
490 struct snd_soc_codec
*codec
;
493 /* If the initialization of this soc device failed, there is no codec
494 * associated with it. Just bail out in this case.
496 if (list_empty(&card
->codec_dev_list
))
499 /* Due to the resume being scheduled into a workqueue we could
500 * suspend before that's finished - wait for it to complete.
502 snd_power_lock(card
->snd_card
);
503 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
504 snd_power_unlock(card
->snd_card
);
506 /* we're going to block userspace touching us until resume completes */
507 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
509 /* mute any active DACs */
510 for (i
= 0; i
< card
->num_rtd
; i
++) {
511 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
512 struct snd_soc_dai_driver
*drv
= dai
->driver
;
514 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
517 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
518 drv
->ops
->digital_mute(dai
, 1);
521 /* suspend all pcms */
522 for (i
= 0; i
< card
->num_rtd
; i
++) {
523 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
526 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
529 if (card
->suspend_pre
)
530 card
->suspend_pre(card
);
532 for (i
= 0; i
< card
->num_rtd
; i
++) {
533 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
534 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
536 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
539 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
540 cpu_dai
->driver
->suspend(cpu_dai
);
541 if (platform
->driver
->suspend
&& !platform
->suspended
) {
542 platform
->driver
->suspend(cpu_dai
);
543 platform
->suspended
= 1;
547 /* close any waiting streams and save state */
548 for (i
= 0; i
< card
->num_rtd
; i
++) {
549 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
550 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
553 for (i
= 0; i
< card
->num_rtd
; i
++) {
554 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
556 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
559 if (driver
->playback
.stream_name
!= NULL
)
560 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
561 SND_SOC_DAPM_STREAM_SUSPEND
);
563 if (driver
->capture
.stream_name
!= NULL
)
564 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
565 SND_SOC_DAPM_STREAM_SUSPEND
);
568 /* suspend all CODECs */
569 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
570 /* If there are paths active then the CODEC will be held with
571 * bias _ON and should not be suspended. */
572 if (!codec
->suspended
&& codec
->driver
->suspend
) {
573 switch (codec
->dapm
.bias_level
) {
574 case SND_SOC_BIAS_STANDBY
:
575 case SND_SOC_BIAS_OFF
:
576 codec
->driver
->suspend(codec
);
577 codec
->suspended
= 1;
578 codec
->cache_sync
= 1;
581 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
587 for (i
= 0; i
< card
->num_rtd
; i
++) {
588 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
590 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
593 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
594 cpu_dai
->driver
->suspend(cpu_dai
);
597 if (card
->suspend_post
)
598 card
->suspend_post(card
);
602 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
604 /* deferred resume work, so resume can complete before we finished
605 * setting our codec back up, which can be very slow on I2C
607 static void soc_resume_deferred(struct work_struct
*work
)
609 struct snd_soc_card
*card
=
610 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
611 struct snd_soc_codec
*codec
;
614 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
615 * so userspace apps are blocked from touching us
618 dev_dbg(card
->dev
, "starting resume work\n");
620 /* Bring us up into D2 so that DAPM starts enabling things */
621 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
623 if (card
->resume_pre
)
624 card
->resume_pre(card
);
626 /* resume AC97 DAIs */
627 for (i
= 0; i
< card
->num_rtd
; i
++) {
628 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
630 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
633 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
634 cpu_dai
->driver
->resume(cpu_dai
);
637 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
638 /* If the CODEC was idle over suspend then it will have been
639 * left with bias OFF or STANDBY and suspended so we must now
640 * resume. Otherwise the suspend was suppressed.
642 if (codec
->driver
->resume
&& codec
->suspended
) {
643 switch (codec
->dapm
.bias_level
) {
644 case SND_SOC_BIAS_STANDBY
:
645 case SND_SOC_BIAS_OFF
:
646 codec
->driver
->resume(codec
);
647 codec
->suspended
= 0;
650 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
656 for (i
= 0; i
< card
->num_rtd
; i
++) {
657 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
659 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
662 if (driver
->playback
.stream_name
!= NULL
)
663 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
664 SND_SOC_DAPM_STREAM_RESUME
);
666 if (driver
->capture
.stream_name
!= NULL
)
667 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
668 SND_SOC_DAPM_STREAM_RESUME
);
671 /* unmute any active DACs */
672 for (i
= 0; i
< card
->num_rtd
; i
++) {
673 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
674 struct snd_soc_dai_driver
*drv
= dai
->driver
;
676 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
679 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
680 drv
->ops
->digital_mute(dai
, 0);
683 for (i
= 0; i
< card
->num_rtd
; i
++) {
684 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
685 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
687 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
690 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
691 cpu_dai
->driver
->resume(cpu_dai
);
692 if (platform
->driver
->resume
&& platform
->suspended
) {
693 platform
->driver
->resume(cpu_dai
);
694 platform
->suspended
= 0;
698 if (card
->resume_post
)
699 card
->resume_post(card
);
701 dev_dbg(card
->dev
, "resume work completed\n");
703 /* userspace can access us now we are back as we were before */
704 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
707 /* powers up audio subsystem after a suspend */
708 int snd_soc_resume(struct device
*dev
)
710 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
711 int i
, ac97_control
= 0;
713 /* If the initialization of this soc device failed, there is no codec
714 * associated with it. Just bail out in this case.
716 if (list_empty(&card
->codec_dev_list
))
719 /* AC97 devices might have other drivers hanging off them so
720 * need to resume immediately. Other drivers don't have that
721 * problem and may take a substantial amount of time to resume
722 * due to I/O costs and anti-pop so handle them out of line.
724 for (i
= 0; i
< card
->num_rtd
; i
++) {
725 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
726 ac97_control
|= cpu_dai
->driver
->ac97_control
;
729 dev_dbg(dev
, "Resuming AC97 immediately\n");
730 soc_resume_deferred(&card
->deferred_resume_work
);
732 dev_dbg(dev
, "Scheduling resume work\n");
733 if (!schedule_work(&card
->deferred_resume_work
))
734 dev_err(dev
, "resume work item may be lost\n");
739 EXPORT_SYMBOL_GPL(snd_soc_resume
);
741 #define snd_soc_suspend NULL
742 #define snd_soc_resume NULL
745 static const struct snd_soc_dai_ops null_dai_ops
= {
748 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
750 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
751 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
752 struct snd_soc_codec
*codec
;
753 struct snd_soc_platform
*platform
;
754 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
755 const char *platform_name
;
759 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
761 /* do we already have the CPU DAI for this link ? */
765 /* no, then find CPU DAI from registered DAIs*/
766 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
767 if (strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
770 rtd
->cpu_dai
= cpu_dai
;
773 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
774 dai_link
->cpu_dai_name
);
777 /* do we already have the CODEC for this link ? */
782 /* no, then find CODEC from registered CODECs*/
783 list_for_each_entry(codec
, &codec_list
, list
) {
784 if (strcmp(codec
->name
, dai_link
->codec_name
))
790 * CODEC found, so find CODEC DAI from registered DAIs from
793 list_for_each_entry(codec_dai
, &dai_list
, list
) {
794 if (codec
->dev
== codec_dai
->dev
&&
795 !strcmp(codec_dai
->name
,
796 dai_link
->codec_dai_name
)) {
798 rtd
->codec_dai
= codec_dai
;
802 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
803 dai_link
->codec_dai_name
);
807 dev_dbg(card
->dev
, "CODEC %s not registered\n",
808 dai_link
->codec_name
);
811 /* do we need a platform? */
815 /* if there's no platform we match on the empty platform */
816 platform_name
= dai_link
->platform_name
;
818 platform_name
= "snd-soc-dummy";
820 /* no, then find one from the set of registered platforms */
821 list_for_each_entry(platform
, &platform_list
, list
) {
822 if (strcmp(platform
->name
, platform_name
))
825 rtd
->platform
= platform
;
829 dev_dbg(card
->dev
, "platform %s not registered\n",
830 dai_link
->platform_name
);
834 /* mark rtd as complete if we found all 4 of our client devices */
835 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
842 static void soc_remove_codec(struct snd_soc_codec
*codec
)
846 if (codec
->driver
->remove
) {
847 err
= codec
->driver
->remove(codec
);
850 "asoc: failed to remove %s: %d\n",
854 /* Make sure all DAPM widgets are freed */
855 snd_soc_dapm_free(&codec
->dapm
);
857 soc_cleanup_codec_debugfs(codec
);
859 list_del(&codec
->card_list
);
860 module_put(codec
->dev
->driver
->owner
);
863 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
865 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
866 struct snd_soc_codec
*codec
= rtd
->codec
;
867 struct snd_soc_platform
*platform
= rtd
->platform
;
868 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
871 /* unregister the rtd device */
872 if (rtd
->dev_registered
) {
873 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
874 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
875 device_unregister(&rtd
->dev
);
876 rtd
->dev_registered
= 0;
879 /* remove the CODEC DAI */
880 if (codec_dai
&& codec_dai
->probed
&&
881 codec_dai
->driver
->remove_order
== order
) {
882 if (codec_dai
->driver
->remove
) {
883 err
= codec_dai
->driver
->remove(codec_dai
);
885 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
887 codec_dai
->probed
= 0;
888 list_del(&codec_dai
->card_list
);
891 /* remove the platform */
892 if (platform
&& platform
->probed
&&
893 platform
->driver
->remove_order
== order
) {
894 if (platform
->driver
->remove
) {
895 err
= platform
->driver
->remove(platform
);
897 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
899 platform
->probed
= 0;
900 list_del(&platform
->card_list
);
901 module_put(platform
->dev
->driver
->owner
);
904 /* remove the CODEC */
905 if (codec
&& codec
->probed
&&
906 codec
->driver
->remove_order
== order
)
907 soc_remove_codec(codec
);
909 /* remove the cpu_dai */
910 if (cpu_dai
&& cpu_dai
->probed
&&
911 cpu_dai
->driver
->remove_order
== order
) {
912 if (cpu_dai
->driver
->remove
) {
913 err
= cpu_dai
->driver
->remove(cpu_dai
);
915 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
918 list_del(&cpu_dai
->card_list
);
919 module_put(cpu_dai
->dev
->driver
->owner
);
923 static void soc_remove_dai_links(struct snd_soc_card
*card
)
927 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
929 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
930 soc_remove_dai_link(card
, dai
, order
);
935 static void soc_set_name_prefix(struct snd_soc_card
*card
,
936 struct snd_soc_codec
*codec
)
940 if (card
->codec_conf
== NULL
)
943 for (i
= 0; i
< card
->num_configs
; i
++) {
944 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
945 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
946 codec
->name_prefix
= map
->name_prefix
;
952 static int soc_probe_codec(struct snd_soc_card
*card
,
953 struct snd_soc_codec
*codec
)
956 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
959 codec
->dapm
.card
= card
;
960 soc_set_name_prefix(card
, codec
);
962 if (!try_module_get(codec
->dev
->driver
->owner
))
965 soc_init_codec_debugfs(codec
);
967 if (driver
->dapm_widgets
)
968 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
969 driver
->num_dapm_widgets
);
971 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
974 ret
= driver
->probe(codec
);
977 "asoc: failed to probe CODEC %s: %d\n",
983 if (driver
->controls
)
984 snd_soc_add_controls(codec
, driver
->controls
,
985 driver
->num_controls
);
986 if (driver
->dapm_routes
)
987 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
988 driver
->num_dapm_routes
);
990 /* mark codec as probed and add to card codec list */
992 list_add(&codec
->card_list
, &card
->codec_dev_list
);
993 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
998 soc_cleanup_codec_debugfs(codec
);
999 module_put(codec
->dev
->driver
->owner
);
1004 static int soc_probe_platform(struct snd_soc_card
*card
,
1005 struct snd_soc_platform
*platform
)
1008 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1010 platform
->card
= card
;
1011 platform
->dapm
.card
= card
;
1013 if (!try_module_get(platform
->dev
->driver
->owner
))
1016 if (driver
->dapm_widgets
)
1017 snd_soc_dapm_new_controls(&platform
->dapm
,
1018 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1020 if (driver
->probe
) {
1021 ret
= driver
->probe(platform
);
1023 dev_err(platform
->dev
,
1024 "asoc: failed to probe platform %s: %d\n",
1025 platform
->name
, ret
);
1030 if (driver
->controls
)
1031 snd_soc_add_platform_controls(platform
, driver
->controls
,
1032 driver
->num_controls
);
1033 if (driver
->dapm_routes
)
1034 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1035 driver
->num_dapm_routes
);
1037 /* mark platform as probed and add to card platform list */
1038 platform
->probed
= 1;
1039 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1040 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1045 module_put(platform
->dev
->driver
->owner
);
1050 static void rtd_release(struct device
*dev
) {}
1052 static int soc_post_component_init(struct snd_soc_card
*card
,
1053 struct snd_soc_codec
*codec
,
1054 int num
, int dailess
)
1056 struct snd_soc_dai_link
*dai_link
= NULL
;
1057 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1058 struct snd_soc_pcm_runtime
*rtd
;
1059 const char *temp
, *name
;
1063 dai_link
= &card
->dai_link
[num
];
1064 rtd
= &card
->rtd
[num
];
1065 name
= dai_link
->name
;
1067 aux_dev
= &card
->aux_dev
[num
];
1068 rtd
= &card
->rtd_aux
[num
];
1069 name
= aux_dev
->name
;
1073 /* Make sure all DAPM widgets are instantiated */
1074 snd_soc_dapm_new_widgets(&codec
->dapm
);
1076 /* machine controls, routes and widgets are not prefixed */
1077 temp
= codec
->name_prefix
;
1078 codec
->name_prefix
= NULL
;
1080 /* do machine specific initialization */
1081 if (!dailess
&& dai_link
->init
)
1082 ret
= dai_link
->init(rtd
);
1083 else if (dailess
&& aux_dev
->init
)
1084 ret
= aux_dev
->init(&codec
->dapm
);
1086 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1089 codec
->name_prefix
= temp
;
1091 /* register the rtd device */
1093 rtd
->dev
.parent
= card
->dev
;
1094 rtd
->dev
.release
= rtd_release
;
1095 rtd
->dev
.init_name
= name
;
1096 mutex_init(&rtd
->pcm_mutex
);
1097 ret
= device_register(&rtd
->dev
);
1100 "asoc: failed to register runtime device: %d\n", ret
);
1103 rtd
->dev_registered
= 1;
1105 /* add DAPM sysfs entries for this codec */
1106 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1109 "asoc: failed to add codec dapm sysfs entries: %d\n",
1112 /* add codec sysfs entries */
1113 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1116 "asoc: failed to add codec sysfs files: %d\n", ret
);
1121 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1123 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1124 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1125 struct snd_soc_codec
*codec
= rtd
->codec
;
1126 struct snd_soc_platform
*platform
= rtd
->platform
;
1127 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1130 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1131 card
->name
, num
, order
);
1133 /* config components */
1134 codec_dai
->codec
= codec
;
1135 cpu_dai
->platform
= platform
;
1136 codec_dai
->card
= card
;
1137 cpu_dai
->card
= card
;
1139 /* set default power off timeout */
1140 rtd
->pmdown_time
= pmdown_time
;
1142 /* probe the cpu_dai */
1143 if (!cpu_dai
->probed
&&
1144 cpu_dai
->driver
->probe_order
== order
) {
1145 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1148 if (cpu_dai
->driver
->probe
) {
1149 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1151 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1153 module_put(cpu_dai
->dev
->driver
->owner
);
1157 cpu_dai
->probed
= 1;
1158 /* mark cpu_dai as probed and add to card dai list */
1159 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1162 /* probe the CODEC */
1163 if (!codec
->probed
&&
1164 codec
->driver
->probe_order
== order
) {
1165 ret
= soc_probe_codec(card
, codec
);
1170 /* probe the platform */
1171 if (!platform
->probed
&&
1172 platform
->driver
->probe_order
== order
) {
1173 ret
= soc_probe_platform(card
, platform
);
1178 /* probe the CODEC DAI */
1179 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1180 if (codec_dai
->driver
->probe
) {
1181 ret
= codec_dai
->driver
->probe(codec_dai
);
1183 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1189 /* mark codec_dai as probed and add to card dai list */
1190 codec_dai
->probed
= 1;
1191 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1194 /* complete DAI probe during last probe */
1195 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1198 ret
= soc_post_component_init(card
, codec
, num
, 0);
1202 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1204 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1206 /* create the pcm */
1207 ret
= soc_new_pcm(rtd
, num
);
1209 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1213 /* add platform data for AC97 devices */
1214 if (rtd
->codec_dai
->driver
->ac97_control
)
1215 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1220 #ifdef CONFIG_SND_SOC_AC97_BUS
1221 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1225 /* Only instantiate AC97 if not already done by the adaptor
1226 * for the generic AC97 subsystem.
1228 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1230 * It is possible that the AC97 device is already registered to
1231 * the device subsystem. This happens when the device is created
1232 * via snd_ac97_mixer(). Currently only SoC codec that does so
1233 * is the generic AC97 glue but others migh emerge.
1235 * In those cases we don't try to register the device again.
1237 if (!rtd
->codec
->ac97_created
)
1240 ret
= soc_ac97_dev_register(rtd
->codec
);
1242 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1246 rtd
->codec
->ac97_registered
= 1;
1251 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1253 if (codec
->ac97_registered
) {
1254 soc_ac97_dev_unregister(codec
);
1255 codec
->ac97_registered
= 0;
1260 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1262 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1263 struct snd_soc_codec
*codec
;
1266 /* find CODEC from registered CODECs*/
1267 list_for_each_entry(codec
, &codec_list
, list
) {
1268 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1269 if (codec
->probed
) {
1271 "asoc: codec already probed");
1278 /* codec not found */
1279 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1283 ret
= soc_probe_codec(card
, codec
);
1287 ret
= soc_post_component_init(card
, codec
, num
, 1);
1293 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1295 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1296 struct snd_soc_codec
*codec
= rtd
->codec
;
1298 /* unregister the rtd device */
1299 if (rtd
->dev_registered
) {
1300 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1301 device_unregister(&rtd
->dev
);
1302 rtd
->dev_registered
= 0;
1305 if (codec
&& codec
->probed
)
1306 soc_remove_codec(codec
);
1309 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1310 enum snd_soc_compress_type compress_type
)
1314 if (codec
->cache_init
)
1317 /* override the compress_type if necessary */
1318 if (compress_type
&& codec
->compress_type
!= compress_type
)
1319 codec
->compress_type
= compress_type
;
1320 ret
= snd_soc_cache_init(codec
);
1322 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1326 codec
->cache_init
= 1;
1330 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1332 struct snd_soc_codec
*codec
;
1333 struct snd_soc_codec_conf
*codec_conf
;
1334 enum snd_soc_compress_type compress_type
;
1335 struct snd_soc_dai_link
*dai_link
;
1338 mutex_lock(&card
->mutex
);
1340 if (card
->instantiated
) {
1341 mutex_unlock(&card
->mutex
);
1346 for (i
= 0; i
< card
->num_links
; i
++)
1347 soc_bind_dai_link(card
, i
);
1349 /* bind completed ? */
1350 if (card
->num_rtd
!= card
->num_links
) {
1351 mutex_unlock(&card
->mutex
);
1355 /* initialize the register cache for each available codec */
1356 list_for_each_entry(codec
, &codec_list
, list
) {
1357 if (codec
->cache_init
)
1359 /* by default we don't override the compress_type */
1361 /* check to see if we need to override the compress_type */
1362 for (i
= 0; i
< card
->num_configs
; ++i
) {
1363 codec_conf
= &card
->codec_conf
[i
];
1364 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1365 compress_type
= codec_conf
->compress_type
;
1366 if (compress_type
&& compress_type
1367 != codec
->compress_type
)
1371 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1373 mutex_unlock(&card
->mutex
);
1378 /* card bind complete so register a sound card */
1379 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1380 card
->owner
, 0, &card
->snd_card
);
1382 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1384 mutex_unlock(&card
->mutex
);
1387 card
->snd_card
->dev
= card
->dev
;
1389 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1390 card
->dapm
.dev
= card
->dev
;
1391 card
->dapm
.card
= card
;
1392 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1394 #ifdef CONFIG_DEBUG_FS
1395 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1398 #ifdef CONFIG_PM_SLEEP
1399 /* deferred resume work */
1400 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1403 if (card
->dapm_widgets
)
1404 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1405 card
->num_dapm_widgets
);
1407 /* initialise the sound card only once */
1409 ret
= card
->probe(card
);
1411 goto card_probe_error
;
1414 /* early DAI link probe */
1415 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1417 for (i
= 0; i
< card
->num_links
; i
++) {
1418 ret
= soc_probe_dai_link(card
, i
, order
);
1420 pr_err("asoc: failed to instantiate card %s: %d\n",
1427 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1428 ret
= soc_probe_aux_dev(card
, i
);
1430 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1432 goto probe_aux_dev_err
;
1436 /* We should have a non-codec control add function but we don't */
1438 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1439 struct snd_soc_codec
,
1442 card
->num_controls
);
1444 if (card
->dapm_routes
)
1445 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1446 card
->num_dapm_routes
);
1448 snd_soc_dapm_new_widgets(&card
->dapm
);
1450 for (i
= 0; i
< card
->num_links
; i
++) {
1451 dai_link
= &card
->dai_link
[i
];
1453 if (dai_link
->dai_fmt
) {
1454 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1457 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1458 "Failed to set DAI format: %d\n",
1461 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1464 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1465 "Failed to set DAI format: %d\n",
1470 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1472 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1473 "%s", card
->long_name
? card
->long_name
: card
->name
);
1474 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1475 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1476 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1477 switch (card
->snd_card
->driver
[i
]) {
1483 if (!isalnum(card
->snd_card
->driver
[i
]))
1484 card
->snd_card
->driver
[i
] = '_';
1489 if (card
->late_probe
) {
1490 ret
= card
->late_probe(card
);
1492 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1494 goto probe_aux_dev_err
;
1498 snd_soc_dapm_new_widgets(&card
->dapm
);
1500 if (card
->fully_routed
)
1501 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1502 snd_soc_dapm_auto_nc_codec_pins(codec
);
1504 ret
= snd_card_register(card
->snd_card
);
1506 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1507 goto probe_aux_dev_err
;
1510 #ifdef CONFIG_SND_SOC_AC97_BUS
1511 /* register any AC97 codecs */
1512 for (i
= 0; i
< card
->num_rtd
; i
++) {
1513 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1515 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1517 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1518 goto probe_aux_dev_err
;
1523 card
->instantiated
= 1;
1524 snd_soc_dapm_sync(&card
->dapm
);
1525 mutex_unlock(&card
->mutex
);
1529 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1530 soc_remove_aux_dev(card
, i
);
1533 soc_remove_dai_links(card
);
1539 snd_card_free(card
->snd_card
);
1541 mutex_unlock(&card
->mutex
);
1545 * Attempt to initialise any uninitialised cards. Must be called with
1548 static void snd_soc_instantiate_cards(void)
1550 struct snd_soc_card
*card
;
1551 list_for_each_entry(card
, &card_list
, list
)
1552 snd_soc_instantiate_card(card
);
1555 /* probes a new socdev */
1556 static int soc_probe(struct platform_device
*pdev
)
1558 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1562 * no card, so machine driver should be registering card
1563 * we should not be here in that case so ret error
1568 /* Bodge while we unpick instantiation */
1569 card
->dev
= &pdev
->dev
;
1571 ret
= snd_soc_register_card(card
);
1573 dev_err(&pdev
->dev
, "Failed to register card\n");
1580 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1584 /* make sure any delayed work runs */
1585 for (i
= 0; i
< card
->num_rtd
; i
++) {
1586 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1587 flush_delayed_work_sync(&rtd
->delayed_work
);
1590 /* remove auxiliary devices */
1591 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1592 soc_remove_aux_dev(card
, i
);
1594 /* remove and free each DAI */
1595 soc_remove_dai_links(card
);
1597 soc_cleanup_card_debugfs(card
);
1599 /* remove the card */
1603 snd_soc_dapm_free(&card
->dapm
);
1606 snd_card_free(card
->snd_card
);
1611 /* removes a socdev */
1612 static int soc_remove(struct platform_device
*pdev
)
1614 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1616 snd_soc_unregister_card(card
);
1620 int snd_soc_poweroff(struct device
*dev
)
1622 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1625 if (!card
->instantiated
)
1628 /* Flush out pmdown_time work - we actually do want to run it
1629 * now, we're shutting down so no imminent restart. */
1630 for (i
= 0; i
< card
->num_rtd
; i
++) {
1631 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1632 flush_delayed_work_sync(&rtd
->delayed_work
);
1635 snd_soc_dapm_shutdown(card
);
1639 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1641 const struct dev_pm_ops snd_soc_pm_ops
= {
1642 .suspend
= snd_soc_suspend
,
1643 .resume
= snd_soc_resume
,
1644 .poweroff
= snd_soc_poweroff
,
1646 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1648 /* ASoC platform driver */
1649 static struct platform_driver soc_driver
= {
1651 .name
= "soc-audio",
1652 .owner
= THIS_MODULE
,
1653 .pm
= &snd_soc_pm_ops
,
1656 .remove
= soc_remove
,
1660 * snd_soc_codec_volatile_register: Report if a register is volatile.
1662 * @codec: CODEC to query.
1663 * @reg: Register to query.
1665 * Boolean function indiciating if a CODEC register is volatile.
1667 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1670 if (codec
->volatile_register
)
1671 return codec
->volatile_register(codec
, reg
);
1675 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1678 * snd_soc_codec_readable_register: Report if a register is readable.
1680 * @codec: CODEC to query.
1681 * @reg: Register to query.
1683 * Boolean function indicating if a CODEC register is readable.
1685 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1688 if (codec
->readable_register
)
1689 return codec
->readable_register(codec
, reg
);
1693 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1696 * snd_soc_codec_writable_register: Report if a register is writable.
1698 * @codec: CODEC to query.
1699 * @reg: Register to query.
1701 * Boolean function indicating if a CODEC register is writable.
1703 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
1706 if (codec
->writable_register
)
1707 return codec
->writable_register(codec
, reg
);
1711 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
1713 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
1718 if (!platform
->driver
->read
) {
1719 dev_err(platform
->dev
, "platform has no read back\n");
1723 ret
= platform
->driver
->read(platform
, reg
);
1724 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
1725 trace_snd_soc_preg_read(platform
, reg
, ret
);
1729 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1731 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1732 unsigned int reg
, unsigned int val
)
1734 if (!platform
->driver
->write
) {
1735 dev_err(platform
->dev
, "platform has no write back\n");
1739 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1740 trace_snd_soc_preg_write(platform
, reg
, val
);
1741 return platform
->driver
->write(platform
, reg
, val
);
1743 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1746 * snd_soc_new_ac97_codec - initailise AC97 device
1747 * @codec: audio codec
1748 * @ops: AC97 bus operations
1749 * @num: AC97 codec number
1751 * Initialises AC97 codec resources for use by ad-hoc devices only.
1753 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1754 struct snd_ac97_bus_ops
*ops
, int num
)
1756 mutex_lock(&codec
->mutex
);
1758 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1759 if (codec
->ac97
== NULL
) {
1760 mutex_unlock(&codec
->mutex
);
1764 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1765 if (codec
->ac97
->bus
== NULL
) {
1768 mutex_unlock(&codec
->mutex
);
1772 codec
->ac97
->bus
->ops
= ops
;
1773 codec
->ac97
->num
= num
;
1776 * Mark the AC97 device to be created by us. This way we ensure that the
1777 * device will be registered with the device subsystem later on.
1779 codec
->ac97_created
= 1;
1781 mutex_unlock(&codec
->mutex
);
1784 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1787 * snd_soc_free_ac97_codec - free AC97 codec device
1788 * @codec: audio codec
1790 * Frees AC97 codec device resources.
1792 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1794 mutex_lock(&codec
->mutex
);
1795 #ifdef CONFIG_SND_SOC_AC97_BUS
1796 soc_unregister_ac97_dai_link(codec
);
1798 kfree(codec
->ac97
->bus
);
1801 codec
->ac97_created
= 0;
1802 mutex_unlock(&codec
->mutex
);
1804 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1806 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1810 ret
= codec
->read(codec
, reg
);
1811 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1812 trace_snd_soc_reg_read(codec
, reg
, ret
);
1816 EXPORT_SYMBOL_GPL(snd_soc_read
);
1818 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
1819 unsigned int reg
, unsigned int val
)
1821 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
1822 trace_snd_soc_reg_write(codec
, reg
, val
);
1823 return codec
->write(codec
, reg
, val
);
1825 EXPORT_SYMBOL_GPL(snd_soc_write
);
1827 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
1828 unsigned int reg
, const void *data
, size_t len
)
1830 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
1832 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
1835 * snd_soc_update_bits - update codec register bits
1836 * @codec: audio codec
1837 * @reg: codec register
1838 * @mask: register mask
1841 * Writes new register value.
1843 * Returns 1 for change, 0 for no change, or negative error code.
1845 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1846 unsigned int mask
, unsigned int value
)
1849 unsigned int old
, new;
1852 ret
= snd_soc_read(codec
, reg
);
1857 new = (old
& ~mask
) | (value
& mask
);
1858 change
= old
!= new;
1860 ret
= snd_soc_write(codec
, reg
, new);
1867 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1870 * snd_soc_update_bits_locked - update codec register bits
1871 * @codec: audio codec
1872 * @reg: codec register
1873 * @mask: register mask
1876 * Writes new register value, and takes the codec mutex.
1878 * Returns 1 for change else 0.
1880 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1881 unsigned short reg
, unsigned int mask
,
1886 mutex_lock(&codec
->mutex
);
1887 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1888 mutex_unlock(&codec
->mutex
);
1892 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1895 * snd_soc_test_bits - test register for change
1896 * @codec: audio codec
1897 * @reg: codec register
1898 * @mask: register mask
1901 * Tests a register with a new value and checks if the new value is
1902 * different from the old value.
1904 * Returns 1 for change else 0.
1906 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1907 unsigned int mask
, unsigned int value
)
1910 unsigned int old
, new;
1912 old
= snd_soc_read(codec
, reg
);
1913 new = (old
& ~mask
) | value
;
1914 change
= old
!= new;
1918 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1921 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1922 * @substream: the pcm substream
1923 * @hw: the hardware parameters
1925 * Sets the substream runtime hardware parameters.
1927 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1928 const struct snd_pcm_hardware
*hw
)
1930 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1931 runtime
->hw
.info
= hw
->info
;
1932 runtime
->hw
.formats
= hw
->formats
;
1933 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1934 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1935 runtime
->hw
.periods_min
= hw
->periods_min
;
1936 runtime
->hw
.periods_max
= hw
->periods_max
;
1937 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1938 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1941 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1944 * snd_soc_cnew - create new control
1945 * @_template: control template
1946 * @data: control private data
1947 * @long_name: control long name
1948 * @prefix: control name prefix
1950 * Create a new mixer control from a template control.
1952 * Returns 0 for success, else error.
1954 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1955 void *data
, char *long_name
,
1958 struct snd_kcontrol_new
template;
1959 struct snd_kcontrol
*kcontrol
;
1963 memcpy(&template, _template
, sizeof(template));
1967 long_name
= template.name
;
1970 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
1971 name
= kmalloc(name_len
, GFP_KERNEL
);
1975 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
1977 template.name
= name
;
1979 template.name
= long_name
;
1982 kcontrol
= snd_ctl_new1(&template, data
);
1988 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1991 * snd_soc_add_controls - add an array of controls to a codec.
1992 * Convienience function to add a list of controls. Many codecs were
1993 * duplicating this code.
1995 * @codec: codec to add controls to
1996 * @controls: array of controls to add
1997 * @num_controls: number of elements in the array
1999 * Return 0 for success, else error.
2001 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2002 const struct snd_kcontrol_new
*controls
, int num_controls
)
2004 struct snd_card
*card
= codec
->card
->snd_card
;
2007 for (i
= 0; i
< num_controls
; i
++) {
2008 const struct snd_kcontrol_new
*control
= &controls
[i
];
2009 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
2011 codec
->name_prefix
));
2013 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2014 codec
->name
, control
->name
, err
);
2021 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2024 * snd_soc_add_platform_controls - add an array of controls to a platform.
2025 * Convienience function to add a list of controls.
2027 * @platform: platform to add controls to
2028 * @controls: array of controls to add
2029 * @num_controls: number of elements in the array
2031 * Return 0 for success, else error.
2033 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2034 const struct snd_kcontrol_new
*controls
, int num_controls
)
2036 struct snd_card
*card
= platform
->card
->snd_card
;
2039 for (i
= 0; i
< num_controls
; i
++) {
2040 const struct snd_kcontrol_new
*control
= &controls
[i
];
2041 err
= snd_ctl_add(card
, snd_soc_cnew(control
, platform
,
2042 control
->name
, NULL
));
2044 dev_err(platform
->dev
, "Failed to add %s %d\n",control
->name
, err
);
2051 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2054 * snd_soc_info_enum_double - enumerated double mixer info callback
2055 * @kcontrol: mixer control
2056 * @uinfo: control element information
2058 * Callback to provide information about a double enumerated
2061 * Returns 0 for success.
2063 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2064 struct snd_ctl_elem_info
*uinfo
)
2066 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2068 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2069 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2070 uinfo
->value
.enumerated
.items
= e
->max
;
2072 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2073 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2074 strcpy(uinfo
->value
.enumerated
.name
,
2075 e
->texts
[uinfo
->value
.enumerated
.item
]);
2078 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2081 * snd_soc_get_enum_double - enumerated double mixer get callback
2082 * @kcontrol: mixer control
2083 * @ucontrol: control element information
2085 * Callback to get the value of a double enumerated mixer.
2087 * Returns 0 for success.
2089 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2090 struct snd_ctl_elem_value
*ucontrol
)
2092 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2093 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2094 unsigned int val
, bitmask
;
2096 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2098 val
= snd_soc_read(codec
, e
->reg
);
2099 ucontrol
->value
.enumerated
.item
[0]
2100 = (val
>> e
->shift_l
) & (bitmask
- 1);
2101 if (e
->shift_l
!= e
->shift_r
)
2102 ucontrol
->value
.enumerated
.item
[1] =
2103 (val
>> e
->shift_r
) & (bitmask
- 1);
2107 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2110 * snd_soc_put_enum_double - enumerated double mixer put callback
2111 * @kcontrol: mixer control
2112 * @ucontrol: control element information
2114 * Callback to set the value of a double enumerated mixer.
2116 * Returns 0 for success.
2118 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2119 struct snd_ctl_elem_value
*ucontrol
)
2121 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2122 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2124 unsigned int mask
, bitmask
;
2126 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2128 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2130 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2131 mask
= (bitmask
- 1) << e
->shift_l
;
2132 if (e
->shift_l
!= e
->shift_r
) {
2133 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2135 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2136 mask
|= (bitmask
- 1) << e
->shift_r
;
2139 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2141 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2144 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2145 * @kcontrol: mixer control
2146 * @ucontrol: control element information
2148 * Callback to get the value of a double semi enumerated mixer.
2150 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2151 * used for handling bitfield coded enumeration for example.
2153 * Returns 0 for success.
2155 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2156 struct snd_ctl_elem_value
*ucontrol
)
2158 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2159 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2160 unsigned int reg_val
, val
, mux
;
2162 reg_val
= snd_soc_read(codec
, e
->reg
);
2163 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2164 for (mux
= 0; mux
< e
->max
; mux
++) {
2165 if (val
== e
->values
[mux
])
2168 ucontrol
->value
.enumerated
.item
[0] = mux
;
2169 if (e
->shift_l
!= e
->shift_r
) {
2170 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2171 for (mux
= 0; mux
< e
->max
; mux
++) {
2172 if (val
== e
->values
[mux
])
2175 ucontrol
->value
.enumerated
.item
[1] = mux
;
2180 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2183 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2184 * @kcontrol: mixer control
2185 * @ucontrol: control element information
2187 * Callback to set the value of a double semi enumerated mixer.
2189 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2190 * used for handling bitfield coded enumeration for example.
2192 * Returns 0 for success.
2194 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2195 struct snd_ctl_elem_value
*ucontrol
)
2197 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2198 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2202 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2204 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2205 mask
= e
->mask
<< e
->shift_l
;
2206 if (e
->shift_l
!= e
->shift_r
) {
2207 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2209 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2210 mask
|= e
->mask
<< e
->shift_r
;
2213 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2215 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2218 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2219 * @kcontrol: mixer control
2220 * @uinfo: control element information
2222 * Callback to provide information about an external enumerated
2225 * Returns 0 for success.
2227 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2228 struct snd_ctl_elem_info
*uinfo
)
2230 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2232 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2234 uinfo
->value
.enumerated
.items
= e
->max
;
2236 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2237 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2238 strcpy(uinfo
->value
.enumerated
.name
,
2239 e
->texts
[uinfo
->value
.enumerated
.item
]);
2242 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2245 * snd_soc_info_volsw_ext - external single mixer info callback
2246 * @kcontrol: mixer control
2247 * @uinfo: control element information
2249 * Callback to provide information about a single external mixer control.
2251 * Returns 0 for success.
2253 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2254 struct snd_ctl_elem_info
*uinfo
)
2256 int max
= kcontrol
->private_value
;
2258 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2259 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2261 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2264 uinfo
->value
.integer
.min
= 0;
2265 uinfo
->value
.integer
.max
= max
;
2268 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2271 * snd_soc_info_volsw - single mixer info callback
2272 * @kcontrol: mixer control
2273 * @uinfo: control element information
2275 * Callback to provide information about a single mixer control, or a double
2276 * mixer control that spans 2 registers.
2278 * Returns 0 for success.
2280 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2281 struct snd_ctl_elem_info
*uinfo
)
2283 struct soc_mixer_control
*mc
=
2284 (struct soc_mixer_control
*)kcontrol
->private_value
;
2287 if (!mc
->platform_max
)
2288 mc
->platform_max
= mc
->max
;
2289 platform_max
= mc
->platform_max
;
2291 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2292 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2294 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2296 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2297 uinfo
->value
.integer
.min
= 0;
2298 uinfo
->value
.integer
.max
= platform_max
;
2301 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2304 * snd_soc_get_volsw - single mixer get callback
2305 * @kcontrol: mixer control
2306 * @ucontrol: control element information
2308 * Callback to get the value of a single mixer control, or a double mixer
2309 * control that spans 2 registers.
2311 * Returns 0 for success.
2313 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2314 struct snd_ctl_elem_value
*ucontrol
)
2316 struct soc_mixer_control
*mc
=
2317 (struct soc_mixer_control
*)kcontrol
->private_value
;
2318 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2319 unsigned int reg
= mc
->reg
;
2320 unsigned int reg2
= mc
->rreg
;
2321 unsigned int shift
= mc
->shift
;
2322 unsigned int rshift
= mc
->rshift
;
2324 unsigned int mask
= (1 << fls(max
)) - 1;
2325 unsigned int invert
= mc
->invert
;
2327 ucontrol
->value
.integer
.value
[0] =
2328 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2330 ucontrol
->value
.integer
.value
[0] =
2331 max
- ucontrol
->value
.integer
.value
[0];
2333 if (snd_soc_volsw_is_stereo(mc
)) {
2335 ucontrol
->value
.integer
.value
[1] =
2336 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2338 ucontrol
->value
.integer
.value
[1] =
2339 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2341 ucontrol
->value
.integer
.value
[1] =
2342 max
- ucontrol
->value
.integer
.value
[1];
2347 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2350 * snd_soc_put_volsw - single mixer put callback
2351 * @kcontrol: mixer control
2352 * @ucontrol: control element information
2354 * Callback to set the value of a single mixer control, or a double mixer
2355 * control that spans 2 registers.
2357 * Returns 0 for success.
2359 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2360 struct snd_ctl_elem_value
*ucontrol
)
2362 struct soc_mixer_control
*mc
=
2363 (struct soc_mixer_control
*)kcontrol
->private_value
;
2364 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2365 unsigned int reg
= mc
->reg
;
2366 unsigned int reg2
= mc
->rreg
;
2367 unsigned int shift
= mc
->shift
;
2368 unsigned int rshift
= mc
->rshift
;
2370 unsigned int mask
= (1 << fls(max
)) - 1;
2371 unsigned int invert
= mc
->invert
;
2374 unsigned int val2
= 0;
2375 unsigned int val
, val_mask
;
2377 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2380 val_mask
= mask
<< shift
;
2382 if (snd_soc_volsw_is_stereo(mc
)) {
2383 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2387 val_mask
|= mask
<< rshift
;
2388 val
|= val2
<< rshift
;
2390 val2
= val2
<< shift
;
2394 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2399 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2403 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2406 * snd_soc_info_volsw_s8 - signed mixer info callback
2407 * @kcontrol: mixer control
2408 * @uinfo: control element information
2410 * Callback to provide information about a signed mixer control.
2412 * Returns 0 for success.
2414 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2415 struct snd_ctl_elem_info
*uinfo
)
2417 struct soc_mixer_control
*mc
=
2418 (struct soc_mixer_control
*)kcontrol
->private_value
;
2422 if (!mc
->platform_max
)
2423 mc
->platform_max
= mc
->max
;
2424 platform_max
= mc
->platform_max
;
2426 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2428 uinfo
->value
.integer
.min
= 0;
2429 uinfo
->value
.integer
.max
= platform_max
- min
;
2432 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2435 * snd_soc_get_volsw_s8 - signed mixer get callback
2436 * @kcontrol: mixer control
2437 * @ucontrol: control element information
2439 * Callback to get the value of a signed mixer control.
2441 * Returns 0 for success.
2443 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2444 struct snd_ctl_elem_value
*ucontrol
)
2446 struct soc_mixer_control
*mc
=
2447 (struct soc_mixer_control
*)kcontrol
->private_value
;
2448 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2449 unsigned int reg
= mc
->reg
;
2451 int val
= snd_soc_read(codec
, reg
);
2453 ucontrol
->value
.integer
.value
[0] =
2454 ((signed char)(val
& 0xff))-min
;
2455 ucontrol
->value
.integer
.value
[1] =
2456 ((signed char)((val
>> 8) & 0xff))-min
;
2459 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2462 * snd_soc_put_volsw_sgn - signed mixer put callback
2463 * @kcontrol: mixer control
2464 * @ucontrol: control element information
2466 * Callback to set the value of a signed mixer control.
2468 * Returns 0 for success.
2470 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2471 struct snd_ctl_elem_value
*ucontrol
)
2473 struct soc_mixer_control
*mc
=
2474 (struct soc_mixer_control
*)kcontrol
->private_value
;
2475 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2476 unsigned int reg
= mc
->reg
;
2480 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2481 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2483 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2485 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2488 * snd_soc_limit_volume - Set new limit to an existing volume control.
2490 * @codec: where to look for the control
2491 * @name: Name of the control
2492 * @max: new maximum limit
2494 * Return 0 for success, else error.
2496 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2497 const char *name
, int max
)
2499 struct snd_card
*card
= codec
->card
->snd_card
;
2500 struct snd_kcontrol
*kctl
;
2501 struct soc_mixer_control
*mc
;
2505 /* Sanity check for name and max */
2506 if (unlikely(!name
|| max
<= 0))
2509 list_for_each_entry(kctl
, &card
->controls
, list
) {
2510 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2516 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2517 if (max
<= mc
->max
) {
2518 mc
->platform_max
= max
;
2524 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2527 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2528 * mixer info callback
2529 * @kcontrol: mixer control
2530 * @uinfo: control element information
2532 * Returns 0 for success.
2534 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2535 struct snd_ctl_elem_info
*uinfo
)
2537 struct soc_mixer_control
*mc
=
2538 (struct soc_mixer_control
*)kcontrol
->private_value
;
2542 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2544 uinfo
->value
.integer
.min
= 0;
2545 uinfo
->value
.integer
.max
= max
-min
;
2549 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2552 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2553 * mixer get callback
2554 * @kcontrol: mixer control
2555 * @uinfo: control element information
2557 * Returns 0 for success.
2559 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2560 struct snd_ctl_elem_value
*ucontrol
)
2562 struct soc_mixer_control
*mc
=
2563 (struct soc_mixer_control
*)kcontrol
->private_value
;
2564 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2565 unsigned int mask
= (1<<mc
->shift
)-1;
2567 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2568 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2570 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2571 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2574 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2577 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2578 * mixer put callback
2579 * @kcontrol: mixer control
2580 * @uinfo: control element information
2582 * Returns 0 for success.
2584 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2585 struct snd_ctl_elem_value
*ucontrol
)
2587 struct soc_mixer_control
*mc
=
2588 (struct soc_mixer_control
*)kcontrol
->private_value
;
2589 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2590 unsigned int mask
= (1<<mc
->shift
)-1;
2593 unsigned int val
, valr
, oval
, ovalr
;
2595 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2597 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2600 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2601 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2605 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2609 if (ovalr
!= valr
) {
2610 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2617 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2620 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2622 * @clk_id: DAI specific clock ID
2623 * @freq: new clock frequency in Hz
2624 * @dir: new clock direction - input/output.
2626 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2628 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2629 unsigned int freq
, int dir
)
2631 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2632 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2633 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2634 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2639 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2642 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2644 * @clk_id: DAI specific clock ID
2645 * @source: Source for the clock
2646 * @freq: new clock frequency in Hz
2647 * @dir: new clock direction - input/output.
2649 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2651 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2652 int source
, unsigned int freq
, int dir
)
2654 if (codec
->driver
->set_sysclk
)
2655 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2660 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2663 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2665 * @div_id: DAI specific clock divider ID
2666 * @div: new clock divisor.
2668 * Configures the clock dividers. This is used to derive the best DAI bit and
2669 * frame clocks from the system or master clock. It's best to set the DAI bit
2670 * and frame clocks as low as possible to save system power.
2672 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2673 int div_id
, int div
)
2675 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2676 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2680 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2683 * snd_soc_dai_set_pll - configure DAI PLL.
2685 * @pll_id: DAI specific PLL ID
2686 * @source: DAI specific source for the PLL
2687 * @freq_in: PLL input clock frequency in Hz
2688 * @freq_out: requested PLL output clock frequency in Hz
2690 * Configures and enables PLL to generate output clock based on input clock.
2692 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2693 unsigned int freq_in
, unsigned int freq_out
)
2695 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2696 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2698 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2699 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2704 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2707 * snd_soc_codec_set_pll - configure codec PLL.
2709 * @pll_id: DAI specific PLL ID
2710 * @source: DAI specific source for the PLL
2711 * @freq_in: PLL input clock frequency in Hz
2712 * @freq_out: requested PLL output clock frequency in Hz
2714 * Configures and enables PLL to generate output clock based on input clock.
2716 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2717 unsigned int freq_in
, unsigned int freq_out
)
2719 if (codec
->driver
->set_pll
)
2720 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2725 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2728 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2730 * @fmt: SND_SOC_DAIFMT_ format value.
2732 * Configures the DAI hardware format and clocking.
2734 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2736 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2737 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2741 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2744 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2746 * @tx_mask: bitmask representing active TX slots.
2747 * @rx_mask: bitmask representing active RX slots.
2748 * @slots: Number of slots in use.
2749 * @slot_width: Width in bits for each slot.
2751 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2754 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2755 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2757 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2758 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2763 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2766 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2768 * @tx_num: how many TX channels
2769 * @tx_slot: pointer to an array which imply the TX slot number channel
2771 * @rx_num: how many RX channels
2772 * @rx_slot: pointer to an array which imply the RX slot number channel
2775 * configure the relationship between channel number and TDM slot number.
2777 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2778 unsigned int tx_num
, unsigned int *tx_slot
,
2779 unsigned int rx_num
, unsigned int *rx_slot
)
2781 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2782 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2787 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2790 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2792 * @tristate: tristate enable
2794 * Tristates the DAI so that others can use it.
2796 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2798 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2799 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2803 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2806 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2808 * @mute: mute enable
2810 * Mutes the DAI DAC.
2812 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2814 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2815 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2819 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2822 * snd_soc_register_card - Register a card with the ASoC core
2824 * @card: Card to register
2827 int snd_soc_register_card(struct snd_soc_card
*card
)
2831 if (!card
->name
|| !card
->dev
)
2834 dev_set_drvdata(card
->dev
, card
);
2836 snd_soc_initialize_card_lists(card
);
2838 soc_init_card_debugfs(card
);
2840 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
2841 (card
->num_links
+ card
->num_aux_devs
),
2843 if (card
->rtd
== NULL
)
2845 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2847 for (i
= 0; i
< card
->num_links
; i
++)
2848 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2850 INIT_LIST_HEAD(&card
->list
);
2851 INIT_LIST_HEAD(&card
->dapm_dirty
);
2852 card
->instantiated
= 0;
2853 mutex_init(&card
->mutex
);
2855 mutex_lock(&client_mutex
);
2856 list_add(&card
->list
, &card_list
);
2857 snd_soc_instantiate_cards();
2858 mutex_unlock(&client_mutex
);
2860 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2864 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2867 * snd_soc_unregister_card - Unregister a card with the ASoC core
2869 * @card: Card to unregister
2872 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2874 if (card
->instantiated
)
2875 soc_cleanup_card_resources(card
);
2876 mutex_lock(&client_mutex
);
2877 list_del(&card
->list
);
2878 mutex_unlock(&client_mutex
);
2879 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2883 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2886 * Simplify DAI link configuration by removing ".-1" from device names
2887 * and sanitizing names.
2889 static char *fmt_single_name(struct device
*dev
, int *id
)
2891 char *found
, name
[NAME_SIZE
];
2894 if (dev_name(dev
) == NULL
)
2897 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2899 /* are we a "%s.%d" name (platform and SPI components) */
2900 found
= strstr(name
, dev
->driver
->name
);
2903 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2905 /* discard ID from name if ID == -1 */
2907 found
[strlen(dev
->driver
->name
)] = '\0';
2911 /* I2C component devices are named "bus-addr" */
2912 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2913 char tmp
[NAME_SIZE
];
2915 /* create unique ID number from I2C addr and bus */
2916 *id
= ((id1
& 0xffff) << 16) + id2
;
2918 /* sanitize component name for DAI link creation */
2919 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2920 strlcpy(name
, tmp
, NAME_SIZE
);
2925 return kstrdup(name
, GFP_KERNEL
);
2929 * Simplify DAI link naming for single devices with multiple DAIs by removing
2930 * any ".-1" and using the DAI name (instead of device name).
2932 static inline char *fmt_multiple_name(struct device
*dev
,
2933 struct snd_soc_dai_driver
*dai_drv
)
2935 if (dai_drv
->name
== NULL
) {
2936 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
2941 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2945 * snd_soc_register_dai - Register a DAI with the ASoC core
2947 * @dai: DAI to register
2949 int snd_soc_register_dai(struct device
*dev
,
2950 struct snd_soc_dai_driver
*dai_drv
)
2952 struct snd_soc_dai
*dai
;
2954 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
2956 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2960 /* create DAI component name */
2961 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2962 if (dai
->name
== NULL
) {
2968 dai
->driver
= dai_drv
;
2969 if (!dai
->driver
->ops
)
2970 dai
->driver
->ops
= &null_dai_ops
;
2972 mutex_lock(&client_mutex
);
2973 list_add(&dai
->list
, &dai_list
);
2974 snd_soc_instantiate_cards();
2975 mutex_unlock(&client_mutex
);
2977 pr_debug("Registered DAI '%s'\n", dai
->name
);
2981 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
2984 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
2986 * @dai: DAI to unregister
2988 void snd_soc_unregister_dai(struct device
*dev
)
2990 struct snd_soc_dai
*dai
;
2992 list_for_each_entry(dai
, &dai_list
, list
) {
2993 if (dev
== dai
->dev
)
2999 mutex_lock(&client_mutex
);
3000 list_del(&dai
->list
);
3001 mutex_unlock(&client_mutex
);
3003 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3007 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3010 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3012 * @dai: Array of DAIs to register
3013 * @count: Number of DAIs
3015 int snd_soc_register_dais(struct device
*dev
,
3016 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3018 struct snd_soc_dai
*dai
;
3021 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3023 for (i
= 0; i
< count
; i
++) {
3025 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3031 /* create DAI component name */
3032 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3033 if (dai
->name
== NULL
) {
3040 dai
->driver
= &dai_drv
[i
];
3041 if (dai
->driver
->id
)
3042 dai
->id
= dai
->driver
->id
;
3045 if (!dai
->driver
->ops
)
3046 dai
->driver
->ops
= &null_dai_ops
;
3048 mutex_lock(&client_mutex
);
3049 list_add(&dai
->list
, &dai_list
);
3050 mutex_unlock(&client_mutex
);
3052 pr_debug("Registered DAI '%s'\n", dai
->name
);
3055 mutex_lock(&client_mutex
);
3056 snd_soc_instantiate_cards();
3057 mutex_unlock(&client_mutex
);
3061 for (i
--; i
>= 0; i
--)
3062 snd_soc_unregister_dai(dev
);
3066 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3069 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3071 * @dai: Array of DAIs to unregister
3072 * @count: Number of DAIs
3074 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3078 for (i
= 0; i
< count
; i
++)
3079 snd_soc_unregister_dai(dev
);
3081 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3084 * snd_soc_register_platform - Register a platform with the ASoC core
3086 * @platform: platform to register
3088 int snd_soc_register_platform(struct device
*dev
,
3089 struct snd_soc_platform_driver
*platform_drv
)
3091 struct snd_soc_platform
*platform
;
3093 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3095 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3096 if (platform
== NULL
)
3099 /* create platform component name */
3100 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3101 if (platform
->name
== NULL
) {
3106 platform
->dev
= dev
;
3107 platform
->driver
= platform_drv
;
3108 platform
->dapm
.dev
= dev
;
3109 platform
->dapm
.platform
= platform
;
3110 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3112 mutex_lock(&client_mutex
);
3113 list_add(&platform
->list
, &platform_list
);
3114 snd_soc_instantiate_cards();
3115 mutex_unlock(&client_mutex
);
3117 pr_debug("Registered platform '%s'\n", platform
->name
);
3121 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3124 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3126 * @platform: platform to unregister
3128 void snd_soc_unregister_platform(struct device
*dev
)
3130 struct snd_soc_platform
*platform
;
3132 list_for_each_entry(platform
, &platform_list
, list
) {
3133 if (dev
== platform
->dev
)
3139 mutex_lock(&client_mutex
);
3140 list_del(&platform
->list
);
3141 mutex_unlock(&client_mutex
);
3143 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3144 kfree(platform
->name
);
3147 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3149 static u64 codec_format_map
[] = {
3150 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3151 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3152 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3153 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3154 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3155 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3156 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3157 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3158 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3159 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3160 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3161 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3162 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3163 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3164 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3165 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3168 /* Fix up the DAI formats for endianness: codecs don't actually see
3169 * the endianness of the data but we're using the CPU format
3170 * definitions which do need to include endianness so we ensure that
3171 * codec DAIs always have both big and little endian variants set.
3173 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3177 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3178 if (stream
->formats
& codec_format_map
[i
])
3179 stream
->formats
|= codec_format_map
[i
];
3183 * snd_soc_register_codec - Register a codec with the ASoC core
3185 * @codec: codec to register
3187 int snd_soc_register_codec(struct device
*dev
,
3188 const struct snd_soc_codec_driver
*codec_drv
,
3189 struct snd_soc_dai_driver
*dai_drv
,
3193 struct snd_soc_codec
*codec
;
3196 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3198 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3202 /* create CODEC component name */
3203 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3204 if (codec
->name
== NULL
) {
3209 if (codec_drv
->compress_type
)
3210 codec
->compress_type
= codec_drv
->compress_type
;
3212 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3214 codec
->write
= codec_drv
->write
;
3215 codec
->read
= codec_drv
->read
;
3216 codec
->volatile_register
= codec_drv
->volatile_register
;
3217 codec
->readable_register
= codec_drv
->readable_register
;
3218 codec
->writable_register
= codec_drv
->writable_register
;
3219 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3220 codec
->dapm
.dev
= dev
;
3221 codec
->dapm
.codec
= codec
;
3222 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3223 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
3225 codec
->driver
= codec_drv
;
3226 codec
->num_dai
= num_dai
;
3227 mutex_init(&codec
->mutex
);
3229 /* allocate CODEC register cache */
3230 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3231 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3232 codec
->reg_size
= reg_size
;
3233 /* it is necessary to make a copy of the default register cache
3234 * because in the case of using a compression type that requires
3235 * the default register cache to be marked as __devinitconst the
3236 * kernel might have freed the array by the time we initialize
3239 if (codec_drv
->reg_cache_default
) {
3240 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3241 reg_size
, GFP_KERNEL
);
3242 if (!codec
->reg_def_copy
) {
3249 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3250 if (!codec
->volatile_register
)
3251 codec
->volatile_register
= snd_soc_default_volatile_register
;
3252 if (!codec
->readable_register
)
3253 codec
->readable_register
= snd_soc_default_readable_register
;
3254 if (!codec
->writable_register
)
3255 codec
->writable_register
= snd_soc_default_writable_register
;
3258 for (i
= 0; i
< num_dai
; i
++) {
3259 fixup_codec_formats(&dai_drv
[i
].playback
);
3260 fixup_codec_formats(&dai_drv
[i
].capture
);
3263 /* register any DAIs */
3265 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3270 mutex_lock(&client_mutex
);
3271 list_add(&codec
->list
, &codec_list
);
3272 snd_soc_instantiate_cards();
3273 mutex_unlock(&client_mutex
);
3275 pr_debug("Registered codec '%s'\n", codec
->name
);
3279 kfree(codec
->reg_def_copy
);
3280 codec
->reg_def_copy
= NULL
;
3285 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3288 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3290 * @codec: codec to unregister
3292 void snd_soc_unregister_codec(struct device
*dev
)
3294 struct snd_soc_codec
*codec
;
3297 list_for_each_entry(codec
, &codec_list
, list
) {
3298 if (dev
== codec
->dev
)
3305 for (i
= 0; i
< codec
->num_dai
; i
++)
3306 snd_soc_unregister_dai(dev
);
3308 mutex_lock(&client_mutex
);
3309 list_del(&codec
->list
);
3310 mutex_unlock(&client_mutex
);
3312 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3314 snd_soc_cache_exit(codec
);
3315 kfree(codec
->reg_def_copy
);
3319 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3321 /* Retrieve a card's name from device tree */
3322 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3323 const char *propname
)
3325 struct device_node
*np
= card
->dev
->of_node
;
3328 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3330 * EINVAL means the property does not exist. This is fine providing
3331 * card->name was previously set, which is checked later in
3332 * snd_soc_register_card.
3334 if (ret
< 0 && ret
!= -EINVAL
) {
3336 "Property '%s' could not be read: %d\n",
3343 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3345 static int __init
snd_soc_init(void)
3347 #ifdef CONFIG_DEBUG_FS
3348 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3349 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3351 "ASoC: Failed to create debugfs directory\n");
3352 snd_soc_debugfs_root
= NULL
;
3355 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3357 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3359 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3361 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3363 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3364 &platform_list_fops
))
3365 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3368 snd_soc_util_init();
3370 return platform_driver_register(&soc_driver
);
3372 module_init(snd_soc_init
);
3374 static void __exit
snd_soc_exit(void)
3376 snd_soc_util_exit();
3378 #ifdef CONFIG_DEBUG_FS
3379 debugfs_remove_recursive(snd_soc_debugfs_root
);
3381 platform_driver_unregister(&soc_driver
);
3383 module_exit(snd_soc_exit
);
3385 /* Module information */
3386 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3387 MODULE_DESCRIPTION("ALSA SoC Core");
3388 MODULE_LICENSE("GPL");
3389 MODULE_ALIAS("platform:soc-audio");