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/slab.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/core.h>
36 #include <sound/jack.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/soc.h>
40 #include <sound/initval.h>
42 #define CREATE_TRACE_POINTS
43 #include <trace/events/asoc.h>
47 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
49 #ifdef CONFIG_DEBUG_FS
50 struct dentry
*snd_soc_debugfs_root
;
51 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
54 static DEFINE_MUTEX(client_mutex
);
55 static LIST_HEAD(card_list
);
56 static LIST_HEAD(dai_list
);
57 static LIST_HEAD(platform_list
);
58 static LIST_HEAD(codec_list
);
60 int soc_new_pcm(struct snd_soc_pcm_runtime
*rtd
, int num
);
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
67 static int pmdown_time
= 5000;
68 module_param(pmdown_time
, int, 0);
69 MODULE_PARM_DESC(pmdown_time
, "DAPM stream powerdown time (msecs)");
71 /* returns the minimum number of bytes needed to represent
72 * a particular given value */
73 static int min_bytes_needed(unsigned long val
)
78 for (i
= (sizeof val
* 8) - 1; i
>= 0; --i
, ++c
)
81 c
= (sizeof val
* 8) - c
;
89 /* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91 static int format_register_str(struct snd_soc_codec
*codec
,
92 unsigned int reg
, char *buf
, size_t len
)
94 int wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
95 int regsize
= codec
->driver
->reg_word_size
* 2;
98 char regbuf
[regsize
+ 1];
100 /* since tmpbuf is allocated on the stack, warn the callers if they
101 * try to abuse this function */
104 /* +2 for ': ' and + 1 for '\n' */
105 if (wordsize
+ regsize
+ 2 + 1 != len
)
108 ret
= snd_soc_read(codec
, reg
);
110 memset(regbuf
, 'X', regsize
);
111 regbuf
[regsize
] = '\0';
113 snprintf(regbuf
, regsize
+ 1, "%.*x", regsize
, ret
);
116 /* prepare the buffer */
117 snprintf(tmpbuf
, len
+ 1, "%.*x: %s\n", wordsize
, reg
, regbuf
);
118 /* copy it back to the caller without the '\0' */
119 memcpy(buf
, tmpbuf
, len
);
124 /* codec register dump */
125 static ssize_t
soc_codec_reg_show(struct snd_soc_codec
*codec
, char *buf
,
126 size_t count
, loff_t pos
)
129 int wordsize
, regsize
;
134 wordsize
= min_bytes_needed(codec
->driver
->reg_cache_size
) * 2;
135 regsize
= codec
->driver
->reg_word_size
* 2;
137 len
= wordsize
+ regsize
+ 2 + 1;
139 if (!codec
->driver
->reg_cache_size
)
142 if (codec
->driver
->reg_cache_step
)
143 step
= codec
->driver
->reg_cache_step
;
145 for (i
= 0; i
< codec
->driver
->reg_cache_size
; i
+= step
) {
146 if (!snd_soc_codec_readable_register(codec
, i
))
148 if (codec
->driver
->display_register
) {
149 count
+= codec
->driver
->display_register(codec
, buf
+ count
,
150 PAGE_SIZE
- count
, i
);
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total
+ len
>= count
- 1)
157 format_register_str(codec
, i
, buf
+ total
, len
);
164 total
= min(total
, count
- 1);
169 static ssize_t
codec_reg_show(struct device
*dev
,
170 struct device_attribute
*attr
, char *buf
)
172 struct snd_soc_pcm_runtime
*rtd
=
173 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
175 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
178 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
180 static ssize_t
pmdown_time_show(struct device
*dev
,
181 struct device_attribute
*attr
, char *buf
)
183 struct snd_soc_pcm_runtime
*rtd
=
184 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
186 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
189 static ssize_t
pmdown_time_set(struct device
*dev
,
190 struct device_attribute
*attr
,
191 const char *buf
, size_t count
)
193 struct snd_soc_pcm_runtime
*rtd
=
194 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
197 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
204 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
206 #ifdef CONFIG_DEBUG_FS
207 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
209 file
->private_data
= inode
->i_private
;
213 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
214 size_t count
, loff_t
*ppos
)
217 struct snd_soc_codec
*codec
= file
->private_data
;
220 if (*ppos
< 0 || !count
)
223 buf
= kmalloc(count
, GFP_KERNEL
);
227 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
229 if (copy_to_user(user_buf
, buf
, ret
)) {
240 static ssize_t
codec_reg_write_file(struct file
*file
,
241 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
246 unsigned long reg
, value
;
247 struct snd_soc_codec
*codec
= file
->private_data
;
249 buf_size
= min(count
, (sizeof(buf
)-1));
250 if (copy_from_user(buf
, user_buf
, buf_size
))
254 while (*start
== ' ')
256 reg
= simple_strtoul(start
, &start
, 16);
257 while (*start
== ' ')
259 if (strict_strtoul(start
, 16, &value
))
262 /* Userspace has been fiddling around behind the kernel's back */
263 add_taint(TAINT_USER
);
265 snd_soc_write(codec
, reg
, value
);
269 static const struct file_operations codec_reg_fops
= {
270 .open
= codec_reg_open_file
,
271 .read
= codec_reg_read_file
,
272 .write
= codec_reg_write_file
,
273 .llseek
= default_llseek
,
276 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
278 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
280 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
282 if (!codec
->debugfs_codec_root
) {
284 "ASoC: Failed to create codec debugfs directory\n");
288 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
290 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
293 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
294 codec
->debugfs_codec_root
,
295 codec
, &codec_reg_fops
);
296 if (!codec
->debugfs_reg
)
298 "ASoC: Failed to create codec register debugfs file\n");
300 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
303 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
305 debugfs_remove_recursive(codec
->debugfs_codec_root
);
308 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
309 size_t count
, loff_t
*ppos
)
311 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
312 ssize_t len
, ret
= 0;
313 struct snd_soc_codec
*codec
;
318 list_for_each_entry(codec
, &codec_list
, list
) {
319 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
323 if (ret
> PAGE_SIZE
) {
330 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
337 static const struct file_operations codec_list_fops
= {
338 .read
= codec_list_read_file
,
339 .llseek
= default_llseek
,/* read accesses f_pos */
342 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
343 size_t count
, loff_t
*ppos
)
345 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
346 ssize_t len
, ret
= 0;
347 struct snd_soc_dai
*dai
;
352 list_for_each_entry(dai
, &dai_list
, list
) {
353 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
356 if (ret
> PAGE_SIZE
) {
362 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
369 static const struct file_operations dai_list_fops
= {
370 .read
= dai_list_read_file
,
371 .llseek
= default_llseek
,/* read accesses f_pos */
374 static ssize_t
platform_list_read_file(struct file
*file
,
375 char __user
*user_buf
,
376 size_t count
, loff_t
*ppos
)
378 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
379 ssize_t len
, ret
= 0;
380 struct snd_soc_platform
*platform
;
385 list_for_each_entry(platform
, &platform_list
, list
) {
386 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
390 if (ret
> PAGE_SIZE
) {
396 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
403 static const struct file_operations platform_list_fops
= {
404 .read
= platform_list_read_file
,
405 .llseek
= default_llseek
,/* read accesses f_pos */
408 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
410 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
411 snd_soc_debugfs_root
);
412 if (!card
->debugfs_card_root
) {
414 "ASoC: Failed to create codec debugfs directory\n");
418 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
419 card
->debugfs_card_root
,
421 if (!card
->debugfs_pop_time
)
423 "Failed to create pop time debugfs file\n");
426 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
428 debugfs_remove_recursive(card
->debugfs_card_root
);
433 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
437 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
441 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
445 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
450 #ifdef CONFIG_SND_SOC_AC97_BUS
451 /* unregister ac97 codec */
452 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
454 if (codec
->ac97
->dev
.bus
)
455 device_unregister(&codec
->ac97
->dev
);
459 /* stop no dev release warning */
460 static void soc_ac97_device_release(struct device
*dev
){}
462 /* register ac97 codec to bus */
463 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
467 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
468 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
469 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
471 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
472 codec
->card
->snd_card
->number
, 0, codec
->name
);
473 err
= device_register(&codec
->ac97
->dev
);
475 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
476 codec
->ac97
->dev
.bus
= NULL
;
483 #ifdef CONFIG_PM_SLEEP
484 /* powers down audio subsystem for suspend */
485 int snd_soc_suspend(struct device
*dev
)
487 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
488 struct snd_soc_codec
*codec
;
491 /* If the initialization of this soc device failed, there is no codec
492 * associated with it. Just bail out in this case.
494 if (list_empty(&card
->codec_dev_list
))
497 /* Due to the resume being scheduled into a workqueue we could
498 * suspend before that's finished - wait for it to complete.
500 snd_power_lock(card
->snd_card
);
501 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
502 snd_power_unlock(card
->snd_card
);
504 /* we're going to block userspace touching us until resume completes */
505 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
507 /* mute any active DACs */
508 for (i
= 0; i
< card
->num_rtd
; i
++) {
509 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
510 struct snd_soc_dai_driver
*drv
= dai
->driver
;
512 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
515 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
516 drv
->ops
->digital_mute(dai
, 1);
519 /* suspend all pcms */
520 for (i
= 0; i
< card
->num_rtd
; i
++) {
521 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
524 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
527 if (card
->suspend_pre
)
528 card
->suspend_pre(card
);
530 for (i
= 0; i
< card
->num_rtd
; i
++) {
531 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
532 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
534 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
537 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
538 cpu_dai
->driver
->suspend(cpu_dai
);
539 if (platform
->driver
->suspend
&& !platform
->suspended
) {
540 platform
->driver
->suspend(cpu_dai
);
541 platform
->suspended
= 1;
545 /* close any waiting streams and save state */
546 for (i
= 0; i
< card
->num_rtd
; i
++) {
547 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
548 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
551 for (i
= 0; i
< card
->num_rtd
; i
++) {
552 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
554 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
557 if (driver
->playback
.stream_name
!= NULL
)
558 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
559 SND_SOC_DAPM_STREAM_SUSPEND
);
561 if (driver
->capture
.stream_name
!= NULL
)
562 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
563 SND_SOC_DAPM_STREAM_SUSPEND
);
566 /* suspend all CODECs */
567 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
568 /* If there are paths active then the CODEC will be held with
569 * bias _ON and should not be suspended. */
570 if (!codec
->suspended
&& codec
->driver
->suspend
) {
571 switch (codec
->dapm
.bias_level
) {
572 case SND_SOC_BIAS_STANDBY
:
573 case SND_SOC_BIAS_OFF
:
574 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
575 codec
->suspended
= 1;
576 codec
->cache_sync
= 1;
579 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
585 for (i
= 0; i
< card
->num_rtd
; i
++) {
586 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
588 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
591 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
592 cpu_dai
->driver
->suspend(cpu_dai
);
595 if (card
->suspend_post
)
596 card
->suspend_post(card
);
600 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
602 /* deferred resume work, so resume can complete before we finished
603 * setting our codec back up, which can be very slow on I2C
605 static void soc_resume_deferred(struct work_struct
*work
)
607 struct snd_soc_card
*card
=
608 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
609 struct snd_soc_codec
*codec
;
612 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
613 * so userspace apps are blocked from touching us
616 dev_dbg(card
->dev
, "starting resume work\n");
618 /* Bring us up into D2 so that DAPM starts enabling things */
619 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
621 if (card
->resume_pre
)
622 card
->resume_pre(card
);
624 /* resume AC97 DAIs */
625 for (i
= 0; i
< card
->num_rtd
; i
++) {
626 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
628 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
631 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
632 cpu_dai
->driver
->resume(cpu_dai
);
635 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
636 /* If the CODEC was idle over suspend then it will have been
637 * left with bias OFF or STANDBY and suspended so we must now
638 * resume. Otherwise the suspend was suppressed.
640 if (codec
->driver
->resume
&& codec
->suspended
) {
641 switch (codec
->dapm
.bias_level
) {
642 case SND_SOC_BIAS_STANDBY
:
643 case SND_SOC_BIAS_OFF
:
644 codec
->driver
->resume(codec
);
645 codec
->suspended
= 0;
648 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
654 for (i
= 0; i
< card
->num_rtd
; i
++) {
655 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
657 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
660 if (driver
->playback
.stream_name
!= NULL
)
661 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
662 SND_SOC_DAPM_STREAM_RESUME
);
664 if (driver
->capture
.stream_name
!= NULL
)
665 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
666 SND_SOC_DAPM_STREAM_RESUME
);
669 /* unmute any active DACs */
670 for (i
= 0; i
< card
->num_rtd
; i
++) {
671 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
672 struct snd_soc_dai_driver
*drv
= dai
->driver
;
674 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
677 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
678 drv
->ops
->digital_mute(dai
, 0);
681 for (i
= 0; i
< card
->num_rtd
; i
++) {
682 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
683 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
685 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
688 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
689 cpu_dai
->driver
->resume(cpu_dai
);
690 if (platform
->driver
->resume
&& platform
->suspended
) {
691 platform
->driver
->resume(cpu_dai
);
692 platform
->suspended
= 0;
696 if (card
->resume_post
)
697 card
->resume_post(card
);
699 dev_dbg(card
->dev
, "resume work completed\n");
701 /* userspace can access us now we are back as we were before */
702 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
705 /* powers up audio subsystem after a suspend */
706 int snd_soc_resume(struct device
*dev
)
708 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
709 int i
, ac97_control
= 0;
711 /* AC97 devices might have other drivers hanging off them so
712 * need to resume immediately. Other drivers don't have that
713 * problem and may take a substantial amount of time to resume
714 * due to I/O costs and anti-pop so handle them out of line.
716 for (i
= 0; i
< card
->num_rtd
; i
++) {
717 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
718 ac97_control
|= cpu_dai
->driver
->ac97_control
;
721 dev_dbg(dev
, "Resuming AC97 immediately\n");
722 soc_resume_deferred(&card
->deferred_resume_work
);
724 dev_dbg(dev
, "Scheduling resume work\n");
725 if (!schedule_work(&card
->deferred_resume_work
))
726 dev_err(dev
, "resume work item may be lost\n");
731 EXPORT_SYMBOL_GPL(snd_soc_resume
);
733 #define snd_soc_suspend NULL
734 #define snd_soc_resume NULL
737 static struct snd_soc_dai_ops null_dai_ops
= {
740 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
742 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
743 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
744 struct snd_soc_codec
*codec
;
745 struct snd_soc_platform
*platform
;
746 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
747 const char *platform_name
;
751 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
753 /* do we already have the CPU DAI for this link ? */
757 /* no, then find CPU DAI from registered DAIs*/
758 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
759 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
760 rtd
->cpu_dai
= cpu_dai
;
764 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
765 dai_link
->cpu_dai_name
);
768 /* do we already have the CODEC for this link ? */
773 /* no, then find CODEC from registered CODECs*/
774 list_for_each_entry(codec
, &codec_list
, list
) {
775 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
778 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
779 list_for_each_entry(codec_dai
, &dai_list
, list
) {
780 if (codec
->dev
== codec_dai
->dev
&&
781 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
782 rtd
->codec_dai
= codec_dai
;
786 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
787 dai_link
->codec_dai_name
);
792 dev_dbg(card
->dev
, "CODEC %s not registered\n",
793 dai_link
->codec_name
);
796 /* do we need a platform? */
800 /* if there's no platform we match on the empty platform */
801 platform_name
= dai_link
->platform_name
;
803 platform_name
= "snd-soc-dummy";
805 /* no, then find one from the set of registered platforms */
806 list_for_each_entry(platform
, &platform_list
, list
) {
807 if (!strcmp(platform
->name
, platform_name
)) {
808 rtd
->platform
= platform
;
813 dev_dbg(card
->dev
, "platform %s not registered\n",
814 dai_link
->platform_name
);
818 /* mark rtd as complete if we found all 4 of our client devices */
819 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
826 static void soc_remove_codec(struct snd_soc_codec
*codec
)
830 if (codec
->driver
->remove
) {
831 err
= codec
->driver
->remove(codec
);
834 "asoc: failed to remove %s: %d\n",
838 /* Make sure all DAPM widgets are freed */
839 snd_soc_dapm_free(&codec
->dapm
);
841 soc_cleanup_codec_debugfs(codec
);
843 list_del(&codec
->card_list
);
844 module_put(codec
->dev
->driver
->owner
);
847 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
849 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
850 struct snd_soc_codec
*codec
= rtd
->codec
;
851 struct snd_soc_platform
*platform
= rtd
->platform
;
852 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
855 /* unregister the rtd device */
856 if (rtd
->dev_registered
) {
857 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
858 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
859 device_unregister(&rtd
->dev
);
860 rtd
->dev_registered
= 0;
863 /* remove the CODEC DAI */
864 if (codec_dai
&& codec_dai
->probed
&&
865 codec_dai
->driver
->remove_order
== order
) {
866 if (codec_dai
->driver
->remove
) {
867 err
= codec_dai
->driver
->remove(codec_dai
);
869 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
871 codec_dai
->probed
= 0;
872 list_del(&codec_dai
->card_list
);
875 /* remove the platform */
876 if (platform
&& platform
->probed
&&
877 platform
->driver
->remove_order
== order
) {
878 if (platform
->driver
->remove
) {
879 err
= platform
->driver
->remove(platform
);
881 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
883 platform
->probed
= 0;
884 list_del(&platform
->card_list
);
885 module_put(platform
->dev
->driver
->owner
);
888 /* remove the CODEC */
889 if (codec
&& codec
->probed
&&
890 codec
->driver
->remove_order
== order
)
891 soc_remove_codec(codec
);
893 /* remove the cpu_dai */
894 if (cpu_dai
&& cpu_dai
->probed
&&
895 cpu_dai
->driver
->remove_order
== order
) {
896 if (cpu_dai
->driver
->remove
) {
897 err
= cpu_dai
->driver
->remove(cpu_dai
);
899 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
902 list_del(&cpu_dai
->card_list
);
903 module_put(cpu_dai
->dev
->driver
->owner
);
907 static void soc_remove_dai_links(struct snd_soc_card
*card
)
911 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
913 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
914 soc_remove_dai_link(card
, dai
, order
);
919 static void soc_set_name_prefix(struct snd_soc_card
*card
,
920 struct snd_soc_codec
*codec
)
924 if (card
->codec_conf
== NULL
)
927 for (i
= 0; i
< card
->num_configs
; i
++) {
928 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
929 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
930 codec
->name_prefix
= map
->name_prefix
;
936 static int soc_probe_codec(struct snd_soc_card
*card
,
937 struct snd_soc_codec
*codec
)
940 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
943 codec
->dapm
.card
= card
;
944 soc_set_name_prefix(card
, codec
);
946 if (!try_module_get(codec
->dev
->driver
->owner
))
949 soc_init_codec_debugfs(codec
);
951 if (driver
->dapm_widgets
)
952 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
953 driver
->num_dapm_widgets
);
955 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
958 ret
= driver
->probe(codec
);
961 "asoc: failed to probe CODEC %s: %d\n",
967 if (driver
->controls
)
968 snd_soc_add_controls(codec
, driver
->controls
,
969 driver
->num_controls
);
970 if (driver
->dapm_routes
)
971 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
972 driver
->num_dapm_routes
);
974 /* mark codec as probed and add to card codec list */
976 list_add(&codec
->card_list
, &card
->codec_dev_list
);
977 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
982 soc_cleanup_codec_debugfs(codec
);
983 module_put(codec
->dev
->driver
->owner
);
988 static int soc_probe_platform(struct snd_soc_card
*card
,
989 struct snd_soc_platform
*platform
)
992 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
994 platform
->card
= card
;
995 platform
->dapm
.card
= card
;
997 if (!try_module_get(platform
->dev
->driver
->owner
))
1000 if (driver
->dapm_widgets
)
1001 snd_soc_dapm_new_controls(&platform
->dapm
,
1002 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1004 if (driver
->probe
) {
1005 ret
= driver
->probe(platform
);
1007 dev_err(platform
->dev
,
1008 "asoc: failed to probe platform %s: %d\n",
1009 platform
->name
, ret
);
1014 if (driver
->controls
)
1015 snd_soc_add_platform_controls(platform
, driver
->controls
,
1016 driver
->num_controls
);
1017 if (driver
->dapm_routes
)
1018 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1019 driver
->num_dapm_routes
);
1021 /* mark platform as probed and add to card platform list */
1022 platform
->probed
= 1;
1023 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1024 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1029 module_put(platform
->dev
->driver
->owner
);
1034 static void rtd_release(struct device
*dev
) {}
1036 static int soc_post_component_init(struct snd_soc_card
*card
,
1037 struct snd_soc_codec
*codec
,
1038 int num
, int dailess
)
1040 struct snd_soc_dai_link
*dai_link
= NULL
;
1041 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1042 struct snd_soc_pcm_runtime
*rtd
;
1043 const char *temp
, *name
;
1047 dai_link
= &card
->dai_link
[num
];
1048 rtd
= &card
->rtd
[num
];
1049 name
= dai_link
->name
;
1051 aux_dev
= &card
->aux_dev
[num
];
1052 rtd
= &card
->rtd_aux
[num
];
1053 name
= aux_dev
->name
;
1057 /* machine controls, routes and widgets are not prefixed */
1058 temp
= codec
->name_prefix
;
1059 codec
->name_prefix
= NULL
;
1061 /* do machine specific initialization */
1062 if (!dailess
&& dai_link
->init
)
1063 ret
= dai_link
->init(rtd
);
1064 else if (dailess
&& aux_dev
->init
)
1065 ret
= aux_dev
->init(&codec
->dapm
);
1067 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1070 codec
->name_prefix
= temp
;
1072 /* Make sure all DAPM widgets are instantiated */
1073 snd_soc_dapm_new_widgets(&codec
->dapm
);
1075 /* register the rtd device */
1077 rtd
->dev
.parent
= card
->dev
;
1078 rtd
->dev
.release
= rtd_release
;
1079 rtd
->dev
.init_name
= name
;
1080 mutex_init(&rtd
->pcm_mutex
);
1081 ret
= device_register(&rtd
->dev
);
1084 "asoc: failed to register runtime device: %d\n", ret
);
1087 rtd
->dev_registered
= 1;
1089 /* add DAPM sysfs entries for this codec */
1090 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1093 "asoc: failed to add codec dapm sysfs entries: %d\n",
1096 /* add codec sysfs entries */
1097 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1100 "asoc: failed to add codec sysfs files: %d\n", ret
);
1105 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1107 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1108 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1109 struct snd_soc_codec
*codec
= rtd
->codec
;
1110 struct snd_soc_platform
*platform
= rtd
->platform
;
1111 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1114 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1115 card
->name
, num
, order
);
1117 /* config components */
1118 codec_dai
->codec
= codec
;
1119 cpu_dai
->platform
= platform
;
1120 codec_dai
->card
= card
;
1121 cpu_dai
->card
= card
;
1123 /* set default power off timeout */
1124 rtd
->pmdown_time
= pmdown_time
;
1126 /* probe the cpu_dai */
1127 if (!cpu_dai
->probed
&&
1128 cpu_dai
->driver
->probe_order
== order
) {
1129 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1132 if (cpu_dai
->driver
->probe
) {
1133 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1135 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1137 module_put(cpu_dai
->dev
->driver
->owner
);
1141 cpu_dai
->probed
= 1;
1142 /* mark cpu_dai as probed and add to card dai list */
1143 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1146 /* probe the CODEC */
1147 if (!codec
->probed
&&
1148 codec
->driver
->probe_order
== order
) {
1149 ret
= soc_probe_codec(card
, codec
);
1154 /* probe the platform */
1155 if (!platform
->probed
&&
1156 platform
->driver
->probe_order
== order
) {
1157 ret
= soc_probe_platform(card
, platform
);
1162 /* probe the CODEC DAI */
1163 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1164 if (codec_dai
->driver
->probe
) {
1165 ret
= codec_dai
->driver
->probe(codec_dai
);
1167 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1173 /* mark codec_dai as probed and add to card dai list */
1174 codec_dai
->probed
= 1;
1175 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1178 /* complete DAI probe during last probe */
1179 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1182 ret
= soc_post_component_init(card
, codec
, num
, 0);
1186 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1188 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1190 /* create the pcm */
1191 ret
= soc_new_pcm(rtd
, num
);
1193 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1197 /* add platform data for AC97 devices */
1198 if (rtd
->codec_dai
->driver
->ac97_control
)
1199 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1204 #ifdef CONFIG_SND_SOC_AC97_BUS
1205 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1209 /* Only instantiate AC97 if not already done by the adaptor
1210 * for the generic AC97 subsystem.
1212 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1214 * It is possible that the AC97 device is already registered to
1215 * the device subsystem. This happens when the device is created
1216 * via snd_ac97_mixer(). Currently only SoC codec that does so
1217 * is the generic AC97 glue but others migh emerge.
1219 * In those cases we don't try to register the device again.
1221 if (!rtd
->codec
->ac97_created
)
1224 ret
= soc_ac97_dev_register(rtd
->codec
);
1226 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1230 rtd
->codec
->ac97_registered
= 1;
1235 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1237 if (codec
->ac97_registered
) {
1238 soc_ac97_dev_unregister(codec
);
1239 codec
->ac97_registered
= 0;
1244 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1246 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1247 struct snd_soc_codec
*codec
;
1250 /* find CODEC from registered CODECs*/
1251 list_for_each_entry(codec
, &codec_list
, list
) {
1252 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1253 if (codec
->probed
) {
1255 "asoc: codec already probed");
1262 /* codec not found */
1263 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1267 ret
= soc_probe_codec(card
, codec
);
1271 ret
= soc_post_component_init(card
, codec
, num
, 1);
1277 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1279 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1280 struct snd_soc_codec
*codec
= rtd
->codec
;
1282 /* unregister the rtd device */
1283 if (rtd
->dev_registered
) {
1284 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1285 device_unregister(&rtd
->dev
);
1286 rtd
->dev_registered
= 0;
1289 if (codec
&& codec
->probed
)
1290 soc_remove_codec(codec
);
1293 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1294 enum snd_soc_compress_type compress_type
)
1298 if (codec
->cache_init
)
1301 /* override the compress_type if necessary */
1302 if (compress_type
&& codec
->compress_type
!= compress_type
)
1303 codec
->compress_type
= compress_type
;
1304 ret
= snd_soc_cache_init(codec
);
1306 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1310 codec
->cache_init
= 1;
1314 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1316 struct snd_soc_codec
*codec
;
1317 struct snd_soc_codec_conf
*codec_conf
;
1318 enum snd_soc_compress_type compress_type
;
1321 mutex_lock(&card
->mutex
);
1323 if (card
->instantiated
) {
1324 mutex_unlock(&card
->mutex
);
1329 for (i
= 0; i
< card
->num_links
; i
++)
1330 soc_bind_dai_link(card
, i
);
1332 /* bind completed ? */
1333 if (card
->num_rtd
!= card
->num_links
) {
1334 mutex_unlock(&card
->mutex
);
1338 /* initialize the register cache for each available codec */
1339 list_for_each_entry(codec
, &codec_list
, list
) {
1340 if (codec
->cache_init
)
1342 /* by default we don't override the compress_type */
1344 /* check to see if we need to override the compress_type */
1345 for (i
= 0; i
< card
->num_configs
; ++i
) {
1346 codec_conf
= &card
->codec_conf
[i
];
1347 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1348 compress_type
= codec_conf
->compress_type
;
1349 if (compress_type
&& compress_type
1350 != codec
->compress_type
)
1354 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1356 mutex_unlock(&card
->mutex
);
1361 /* card bind complete so register a sound card */
1362 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1363 card
->owner
, 0, &card
->snd_card
);
1365 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1367 mutex_unlock(&card
->mutex
);
1370 card
->snd_card
->dev
= card
->dev
;
1372 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1373 card
->dapm
.dev
= card
->dev
;
1374 card
->dapm
.card
= card
;
1375 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1377 #ifdef CONFIG_DEBUG_FS
1378 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1381 #ifdef CONFIG_PM_SLEEP
1382 /* deferred resume work */
1383 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1386 if (card
->dapm_widgets
)
1387 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1388 card
->num_dapm_widgets
);
1390 /* initialise the sound card only once */
1392 ret
= card
->probe(card
);
1394 goto card_probe_error
;
1397 /* early DAI link probe */
1398 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1400 for (i
= 0; i
< card
->num_links
; i
++) {
1401 ret
= soc_probe_dai_link(card
, i
, order
);
1403 pr_err("asoc: failed to instantiate card %s: %d\n",
1410 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1411 ret
= soc_probe_aux_dev(card
, i
);
1413 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1415 goto probe_aux_dev_err
;
1419 /* We should have a non-codec control add function but we don't */
1421 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1422 struct snd_soc_codec
,
1425 card
->num_controls
);
1427 if (card
->dapm_routes
)
1428 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1429 card
->num_dapm_routes
);
1431 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1433 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1434 "%s", card
->long_name
? card
->long_name
: card
->name
);
1435 if (card
->driver_name
)
1436 strlcpy(card
->snd_card
->driver
, card
->driver_name
,
1437 sizeof(card
->snd_card
->driver
));
1439 if (card
->late_probe
) {
1440 ret
= card
->late_probe(card
);
1442 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1444 goto probe_aux_dev_err
;
1448 ret
= snd_card_register(card
->snd_card
);
1450 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1451 goto probe_aux_dev_err
;
1454 #ifdef CONFIG_SND_SOC_AC97_BUS
1455 /* register any AC97 codecs */
1456 for (i
= 0; i
< card
->num_rtd
; i
++) {
1457 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1459 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1461 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1462 goto probe_aux_dev_err
;
1467 card
->instantiated
= 1;
1468 mutex_unlock(&card
->mutex
);
1472 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1473 soc_remove_aux_dev(card
, i
);
1476 soc_remove_dai_links(card
);
1482 snd_card_free(card
->snd_card
);
1484 mutex_unlock(&card
->mutex
);
1488 * Attempt to initialise any uninitialised cards. Must be called with
1491 static void snd_soc_instantiate_cards(void)
1493 struct snd_soc_card
*card
;
1494 list_for_each_entry(card
, &card_list
, list
)
1495 snd_soc_instantiate_card(card
);
1498 /* probes a new socdev */
1499 static int soc_probe(struct platform_device
*pdev
)
1501 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1505 * no card, so machine driver should be registering card
1506 * we should not be here in that case so ret error
1511 /* Bodge while we unpick instantiation */
1512 card
->dev
= &pdev
->dev
;
1514 ret
= snd_soc_register_card(card
);
1516 dev_err(&pdev
->dev
, "Failed to register card\n");
1523 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1527 /* make sure any delayed work runs */
1528 for (i
= 0; i
< card
->num_rtd
; i
++) {
1529 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1530 flush_delayed_work_sync(&rtd
->delayed_work
);
1533 /* remove auxiliary devices */
1534 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1535 soc_remove_aux_dev(card
, i
);
1537 /* remove and free each DAI */
1538 soc_remove_dai_links(card
);
1540 soc_cleanup_card_debugfs(card
);
1542 /* remove the card */
1546 snd_soc_dapm_free(&card
->dapm
);
1549 snd_card_free(card
->snd_card
);
1554 /* removes a socdev */
1555 static int soc_remove(struct platform_device
*pdev
)
1557 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1559 snd_soc_unregister_card(card
);
1563 int snd_soc_poweroff(struct device
*dev
)
1565 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1568 if (!card
->instantiated
)
1571 /* Flush out pmdown_time work - we actually do want to run it
1572 * now, we're shutting down so no imminent restart. */
1573 for (i
= 0; i
< card
->num_rtd
; i
++) {
1574 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1575 flush_delayed_work_sync(&rtd
->delayed_work
);
1578 snd_soc_dapm_shutdown(card
);
1582 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1584 const struct dev_pm_ops snd_soc_pm_ops
= {
1585 .suspend
= snd_soc_suspend
,
1586 .resume
= snd_soc_resume
,
1587 .poweroff
= snd_soc_poweroff
,
1589 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1591 /* ASoC platform driver */
1592 static struct platform_driver soc_driver
= {
1594 .name
= "soc-audio",
1595 .owner
= THIS_MODULE
,
1596 .pm
= &snd_soc_pm_ops
,
1599 .remove
= soc_remove
,
1603 * snd_soc_codec_volatile_register: Report if a register is volatile.
1605 * @codec: CODEC to query.
1606 * @reg: Register to query.
1608 * Boolean function indiciating if a CODEC register is volatile.
1610 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1613 if (codec
->volatile_register
)
1614 return codec
->volatile_register(codec
, reg
);
1618 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1621 * snd_soc_codec_readable_register: Report if a register is readable.
1623 * @codec: CODEC to query.
1624 * @reg: Register to query.
1626 * Boolean function indicating if a CODEC register is readable.
1628 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1631 if (codec
->readable_register
)
1632 return codec
->readable_register(codec
, reg
);
1636 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1639 * snd_soc_codec_writable_register: Report if a register is writable.
1641 * @codec: CODEC to query.
1642 * @reg: Register to query.
1644 * Boolean function indicating if a CODEC register is writable.
1646 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
1649 if (codec
->writable_register
)
1650 return codec
->writable_register(codec
, reg
);
1654 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
1656 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
1661 if (!platform
->driver
->read
) {
1662 dev_err(platform
->dev
, "platform has no read back\n");
1666 ret
= platform
->driver
->read(platform
, reg
);
1667 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
1668 trace_snd_soc_preg_read(platform
, reg
, ret
);
1672 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1674 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1675 unsigned int reg
, unsigned int val
)
1677 if (!platform
->driver
->write
) {
1678 dev_err(platform
->dev
, "platform has no write back\n");
1682 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1683 trace_snd_soc_preg_write(platform
, reg
, val
);
1684 return platform
->driver
->write(platform
, reg
, val
);
1686 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1689 * snd_soc_new_ac97_codec - initailise AC97 device
1690 * @codec: audio codec
1691 * @ops: AC97 bus operations
1692 * @num: AC97 codec number
1694 * Initialises AC97 codec resources for use by ad-hoc devices only.
1696 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1697 struct snd_ac97_bus_ops
*ops
, int num
)
1699 mutex_lock(&codec
->mutex
);
1701 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1702 if (codec
->ac97
== NULL
) {
1703 mutex_unlock(&codec
->mutex
);
1707 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1708 if (codec
->ac97
->bus
== NULL
) {
1711 mutex_unlock(&codec
->mutex
);
1715 codec
->ac97
->bus
->ops
= ops
;
1716 codec
->ac97
->num
= num
;
1719 * Mark the AC97 device to be created by us. This way we ensure that the
1720 * device will be registered with the device subsystem later on.
1722 codec
->ac97_created
= 1;
1724 mutex_unlock(&codec
->mutex
);
1727 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1730 * snd_soc_free_ac97_codec - free AC97 codec device
1731 * @codec: audio codec
1733 * Frees AC97 codec device resources.
1735 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1737 mutex_lock(&codec
->mutex
);
1738 #ifdef CONFIG_SND_SOC_AC97_BUS
1739 soc_unregister_ac97_dai_link(codec
);
1741 kfree(codec
->ac97
->bus
);
1744 codec
->ac97_created
= 0;
1745 mutex_unlock(&codec
->mutex
);
1747 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1749 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1753 ret
= codec
->read(codec
, reg
);
1754 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1755 trace_snd_soc_reg_read(codec
, reg
, ret
);
1759 EXPORT_SYMBOL_GPL(snd_soc_read
);
1761 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
1762 unsigned int reg
, unsigned int val
)
1764 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
1765 trace_snd_soc_reg_write(codec
, reg
, val
);
1766 return codec
->write(codec
, reg
, val
);
1768 EXPORT_SYMBOL_GPL(snd_soc_write
);
1770 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
1771 unsigned int reg
, const void *data
, size_t len
)
1773 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
1775 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
1778 * snd_soc_update_bits - update codec register bits
1779 * @codec: audio codec
1780 * @reg: codec register
1781 * @mask: register mask
1784 * Writes new register value.
1786 * Returns 1 for change, 0 for no change, or negative error code.
1788 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1789 unsigned int mask
, unsigned int value
)
1792 unsigned int old
, new;
1795 ret
= snd_soc_read(codec
, reg
);
1800 new = (old
& ~mask
) | (value
& mask
);
1801 change
= old
!= new;
1803 ret
= snd_soc_write(codec
, reg
, new);
1810 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1813 * snd_soc_update_bits_locked - update codec register bits
1814 * @codec: audio codec
1815 * @reg: codec register
1816 * @mask: register mask
1819 * Writes new register value, and takes the codec mutex.
1821 * Returns 1 for change else 0.
1823 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1824 unsigned short reg
, unsigned int mask
,
1829 mutex_lock(&codec
->mutex
);
1830 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1831 mutex_unlock(&codec
->mutex
);
1835 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1838 * snd_soc_test_bits - test register for change
1839 * @codec: audio codec
1840 * @reg: codec register
1841 * @mask: register mask
1844 * Tests a register with a new value and checks if the new value is
1845 * different from the old value.
1847 * Returns 1 for change else 0.
1849 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1850 unsigned int mask
, unsigned int value
)
1853 unsigned int old
, new;
1855 old
= snd_soc_read(codec
, reg
);
1856 new = (old
& ~mask
) | value
;
1857 change
= old
!= new;
1861 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1864 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1865 * @substream: the pcm substream
1866 * @hw: the hardware parameters
1868 * Sets the substream runtime hardware parameters.
1870 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1871 const struct snd_pcm_hardware
*hw
)
1873 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1874 runtime
->hw
.info
= hw
->info
;
1875 runtime
->hw
.formats
= hw
->formats
;
1876 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1877 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1878 runtime
->hw
.periods_min
= hw
->periods_min
;
1879 runtime
->hw
.periods_max
= hw
->periods_max
;
1880 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1881 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1884 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1887 * snd_soc_cnew - create new control
1888 * @_template: control template
1889 * @data: control private data
1890 * @long_name: control long name
1891 * @prefix: control name prefix
1893 * Create a new mixer control from a template control.
1895 * Returns 0 for success, else error.
1897 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1898 void *data
, char *long_name
,
1901 struct snd_kcontrol_new
template;
1902 struct snd_kcontrol
*kcontrol
;
1906 memcpy(&template, _template
, sizeof(template));
1910 long_name
= template.name
;
1913 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
1914 name
= kmalloc(name_len
, GFP_KERNEL
);
1918 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
1920 template.name
= name
;
1922 template.name
= long_name
;
1925 kcontrol
= snd_ctl_new1(&template, data
);
1931 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1934 * snd_soc_add_controls - add an array of controls to a codec.
1935 * Convienience function to add a list of controls. Many codecs were
1936 * duplicating this code.
1938 * @codec: codec to add controls to
1939 * @controls: array of controls to add
1940 * @num_controls: number of elements in the array
1942 * Return 0 for success, else error.
1944 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
1945 const struct snd_kcontrol_new
*controls
, int num_controls
)
1947 struct snd_card
*card
= codec
->card
->snd_card
;
1950 for (i
= 0; i
< num_controls
; i
++) {
1951 const struct snd_kcontrol_new
*control
= &controls
[i
];
1952 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
1954 codec
->name_prefix
));
1956 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
1957 codec
->name
, control
->name
, err
);
1964 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
1967 * snd_soc_add_platform_controls - add an array of controls to a platform.
1968 * Convienience function to add a list of controls.
1970 * @platform: platform to add controls to
1971 * @controls: array of controls to add
1972 * @num_controls: number of elements in the array
1974 * Return 0 for success, else error.
1976 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
1977 const struct snd_kcontrol_new
*controls
, int num_controls
)
1979 struct snd_card
*card
= platform
->card
->snd_card
;
1982 for (i
= 0; i
< num_controls
; i
++) {
1983 const struct snd_kcontrol_new
*control
= &controls
[i
];
1984 err
= snd_ctl_add(card
, snd_soc_cnew(control
, platform
,
1985 control
->name
, NULL
));
1987 dev_err(platform
->dev
, "Failed to add %s %d\n",control
->name
, err
);
1994 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
1997 * snd_soc_info_enum_double - enumerated double mixer info callback
1998 * @kcontrol: mixer control
1999 * @uinfo: control element information
2001 * Callback to provide information about a double enumerated
2004 * Returns 0 for success.
2006 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2007 struct snd_ctl_elem_info
*uinfo
)
2009 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2011 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2012 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2013 uinfo
->value
.enumerated
.items
= e
->max
;
2015 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2016 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2017 strcpy(uinfo
->value
.enumerated
.name
,
2018 e
->texts
[uinfo
->value
.enumerated
.item
]);
2021 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2024 * snd_soc_get_enum_double - enumerated double mixer get callback
2025 * @kcontrol: mixer control
2026 * @ucontrol: control element information
2028 * Callback to get the value of a double enumerated mixer.
2030 * Returns 0 for success.
2032 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2033 struct snd_ctl_elem_value
*ucontrol
)
2035 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2036 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2037 unsigned int val
, bitmask
;
2039 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2041 val
= snd_soc_read(codec
, e
->reg
);
2042 ucontrol
->value
.enumerated
.item
[0]
2043 = (val
>> e
->shift_l
) & (bitmask
- 1);
2044 if (e
->shift_l
!= e
->shift_r
)
2045 ucontrol
->value
.enumerated
.item
[1] =
2046 (val
>> e
->shift_r
) & (bitmask
- 1);
2050 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2053 * snd_soc_put_enum_double - enumerated double mixer put callback
2054 * @kcontrol: mixer control
2055 * @ucontrol: control element information
2057 * Callback to set the value of a double enumerated mixer.
2059 * Returns 0 for success.
2061 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2062 struct snd_ctl_elem_value
*ucontrol
)
2064 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2065 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2067 unsigned int mask
, bitmask
;
2069 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2071 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2073 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2074 mask
= (bitmask
- 1) << e
->shift_l
;
2075 if (e
->shift_l
!= e
->shift_r
) {
2076 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2078 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2079 mask
|= (bitmask
- 1) << e
->shift_r
;
2082 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2084 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2087 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2088 * @kcontrol: mixer control
2089 * @ucontrol: control element information
2091 * Callback to get the value of a double semi enumerated mixer.
2093 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2094 * used for handling bitfield coded enumeration for example.
2096 * Returns 0 for success.
2098 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2099 struct snd_ctl_elem_value
*ucontrol
)
2101 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2102 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2103 unsigned int reg_val
, val
, mux
;
2105 reg_val
= snd_soc_read(codec
, e
->reg
);
2106 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2107 for (mux
= 0; mux
< e
->max
; mux
++) {
2108 if (val
== e
->values
[mux
])
2111 ucontrol
->value
.enumerated
.item
[0] = mux
;
2112 if (e
->shift_l
!= e
->shift_r
) {
2113 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2114 for (mux
= 0; mux
< e
->max
; mux
++) {
2115 if (val
== e
->values
[mux
])
2118 ucontrol
->value
.enumerated
.item
[1] = mux
;
2123 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2126 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2127 * @kcontrol: mixer control
2128 * @ucontrol: control element information
2130 * Callback to set the value of a double semi enumerated mixer.
2132 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2133 * used for handling bitfield coded enumeration for example.
2135 * Returns 0 for success.
2137 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2138 struct snd_ctl_elem_value
*ucontrol
)
2140 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2141 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2145 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2147 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2148 mask
= e
->mask
<< e
->shift_l
;
2149 if (e
->shift_l
!= e
->shift_r
) {
2150 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2152 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2153 mask
|= e
->mask
<< e
->shift_r
;
2156 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2158 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2161 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2162 * @kcontrol: mixer control
2163 * @uinfo: control element information
2165 * Callback to provide information about an external enumerated
2168 * Returns 0 for success.
2170 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2171 struct snd_ctl_elem_info
*uinfo
)
2173 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2175 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2177 uinfo
->value
.enumerated
.items
= e
->max
;
2179 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2180 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2181 strcpy(uinfo
->value
.enumerated
.name
,
2182 e
->texts
[uinfo
->value
.enumerated
.item
]);
2185 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2188 * snd_soc_info_volsw_ext - external single mixer info callback
2189 * @kcontrol: mixer control
2190 * @uinfo: control element information
2192 * Callback to provide information about a single external mixer control.
2194 * Returns 0 for success.
2196 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2197 struct snd_ctl_elem_info
*uinfo
)
2199 int max
= kcontrol
->private_value
;
2201 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2202 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2204 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2207 uinfo
->value
.integer
.min
= 0;
2208 uinfo
->value
.integer
.max
= max
;
2211 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2214 * snd_soc_info_volsw - single mixer info callback
2215 * @kcontrol: mixer control
2216 * @uinfo: control element information
2218 * Callback to provide information about a single mixer control.
2220 * Returns 0 for success.
2222 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2223 struct snd_ctl_elem_info
*uinfo
)
2225 struct soc_mixer_control
*mc
=
2226 (struct soc_mixer_control
*)kcontrol
->private_value
;
2228 unsigned int shift
= mc
->shift
;
2229 unsigned int rshift
= mc
->rshift
;
2231 if (!mc
->platform_max
)
2232 mc
->platform_max
= mc
->max
;
2233 platform_max
= mc
->platform_max
;
2235 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2236 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2238 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2240 uinfo
->count
= shift
== rshift
? 1 : 2;
2241 uinfo
->value
.integer
.min
= 0;
2242 uinfo
->value
.integer
.max
= platform_max
;
2245 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2248 * snd_soc_get_volsw - single mixer get callback
2249 * @kcontrol: mixer control
2250 * @ucontrol: control element information
2252 * Callback to get the value of a single mixer control.
2254 * Returns 0 for success.
2256 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2257 struct snd_ctl_elem_value
*ucontrol
)
2259 struct soc_mixer_control
*mc
=
2260 (struct soc_mixer_control
*)kcontrol
->private_value
;
2261 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2262 unsigned int reg
= mc
->reg
;
2263 unsigned int shift
= mc
->shift
;
2264 unsigned int rshift
= mc
->rshift
;
2266 unsigned int mask
= (1 << fls(max
)) - 1;
2267 unsigned int invert
= mc
->invert
;
2269 ucontrol
->value
.integer
.value
[0] =
2270 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2271 if (shift
!= rshift
)
2272 ucontrol
->value
.integer
.value
[1] =
2273 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2275 ucontrol
->value
.integer
.value
[0] =
2276 max
- ucontrol
->value
.integer
.value
[0];
2277 if (shift
!= rshift
)
2278 ucontrol
->value
.integer
.value
[1] =
2279 max
- ucontrol
->value
.integer
.value
[1];
2284 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2287 * snd_soc_put_volsw - single mixer put callback
2288 * @kcontrol: mixer control
2289 * @ucontrol: control element information
2291 * Callback to set the value of a single mixer control.
2293 * Returns 0 for success.
2295 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2296 struct snd_ctl_elem_value
*ucontrol
)
2298 struct soc_mixer_control
*mc
=
2299 (struct soc_mixer_control
*)kcontrol
->private_value
;
2300 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2301 unsigned int reg
= mc
->reg
;
2302 unsigned int shift
= mc
->shift
;
2303 unsigned int rshift
= mc
->rshift
;
2305 unsigned int mask
= (1 << fls(max
)) - 1;
2306 unsigned int invert
= mc
->invert
;
2307 unsigned int val
, val2
, val_mask
;
2309 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2312 val_mask
= mask
<< shift
;
2314 if (shift
!= rshift
) {
2315 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2318 val_mask
|= mask
<< rshift
;
2319 val
|= val2
<< rshift
;
2321 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2323 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2326 * snd_soc_info_volsw_2r - double mixer info callback
2327 * @kcontrol: mixer control
2328 * @uinfo: control element information
2330 * Callback to provide information about a double mixer control that
2331 * spans 2 codec registers.
2333 * Returns 0 for success.
2335 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2336 struct snd_ctl_elem_info
*uinfo
)
2338 struct soc_mixer_control
*mc
=
2339 (struct soc_mixer_control
*)kcontrol
->private_value
;
2342 if (!mc
->platform_max
)
2343 mc
->platform_max
= mc
->max
;
2344 platform_max
= mc
->platform_max
;
2346 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2347 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2349 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2352 uinfo
->value
.integer
.min
= 0;
2353 uinfo
->value
.integer
.max
= platform_max
;
2356 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2359 * snd_soc_get_volsw_2r - double mixer get callback
2360 * @kcontrol: mixer control
2361 * @ucontrol: control element information
2363 * Callback to get the value of a double mixer control that spans 2 registers.
2365 * Returns 0 for success.
2367 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2368 struct snd_ctl_elem_value
*ucontrol
)
2370 struct soc_mixer_control
*mc
=
2371 (struct soc_mixer_control
*)kcontrol
->private_value
;
2372 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2373 unsigned int reg
= mc
->reg
;
2374 unsigned int reg2
= mc
->rreg
;
2375 unsigned int shift
= mc
->shift
;
2377 unsigned int mask
= (1 << fls(max
)) - 1;
2378 unsigned int invert
= mc
->invert
;
2380 ucontrol
->value
.integer
.value
[0] =
2381 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2382 ucontrol
->value
.integer
.value
[1] =
2383 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2385 ucontrol
->value
.integer
.value
[0] =
2386 max
- ucontrol
->value
.integer
.value
[0];
2387 ucontrol
->value
.integer
.value
[1] =
2388 max
- ucontrol
->value
.integer
.value
[1];
2393 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2396 * snd_soc_put_volsw_2r - double mixer set callback
2397 * @kcontrol: mixer control
2398 * @ucontrol: control element information
2400 * Callback to set the value of a double mixer control that spans 2 registers.
2402 * Returns 0 for success.
2404 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2405 struct snd_ctl_elem_value
*ucontrol
)
2407 struct soc_mixer_control
*mc
=
2408 (struct soc_mixer_control
*)kcontrol
->private_value
;
2409 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2410 unsigned int reg
= mc
->reg
;
2411 unsigned int reg2
= mc
->rreg
;
2412 unsigned int shift
= mc
->shift
;
2414 unsigned int mask
= (1 << fls(max
)) - 1;
2415 unsigned int invert
= mc
->invert
;
2417 unsigned int val
, val2
, val_mask
;
2419 val_mask
= mask
<< shift
;
2420 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2421 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2429 val2
= val2
<< shift
;
2431 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2435 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2438 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2441 * snd_soc_info_volsw_s8 - signed mixer info callback
2442 * @kcontrol: mixer control
2443 * @uinfo: control element information
2445 * Callback to provide information about a signed mixer control.
2447 * Returns 0 for success.
2449 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2450 struct snd_ctl_elem_info
*uinfo
)
2452 struct soc_mixer_control
*mc
=
2453 (struct soc_mixer_control
*)kcontrol
->private_value
;
2457 if (!mc
->platform_max
)
2458 mc
->platform_max
= mc
->max
;
2459 platform_max
= mc
->platform_max
;
2461 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2463 uinfo
->value
.integer
.min
= 0;
2464 uinfo
->value
.integer
.max
= platform_max
- min
;
2467 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2470 * snd_soc_get_volsw_s8 - signed mixer get callback
2471 * @kcontrol: mixer control
2472 * @ucontrol: control element information
2474 * Callback to get the value of a signed mixer control.
2476 * Returns 0 for success.
2478 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2479 struct snd_ctl_elem_value
*ucontrol
)
2481 struct soc_mixer_control
*mc
=
2482 (struct soc_mixer_control
*)kcontrol
->private_value
;
2483 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2484 unsigned int reg
= mc
->reg
;
2486 int val
= snd_soc_read(codec
, reg
);
2488 ucontrol
->value
.integer
.value
[0] =
2489 ((signed char)(val
& 0xff))-min
;
2490 ucontrol
->value
.integer
.value
[1] =
2491 ((signed char)((val
>> 8) & 0xff))-min
;
2494 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2497 * snd_soc_put_volsw_sgn - signed mixer put callback
2498 * @kcontrol: mixer control
2499 * @ucontrol: control element information
2501 * Callback to set the value of a signed mixer control.
2503 * Returns 0 for success.
2505 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2506 struct snd_ctl_elem_value
*ucontrol
)
2508 struct soc_mixer_control
*mc
=
2509 (struct soc_mixer_control
*)kcontrol
->private_value
;
2510 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2511 unsigned int reg
= mc
->reg
;
2515 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2516 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2518 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2520 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2523 * snd_soc_limit_volume - Set new limit to an existing volume control.
2525 * @codec: where to look for the control
2526 * @name: Name of the control
2527 * @max: new maximum limit
2529 * Return 0 for success, else error.
2531 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2532 const char *name
, int max
)
2534 struct snd_card
*card
= codec
->card
->snd_card
;
2535 struct snd_kcontrol
*kctl
;
2536 struct soc_mixer_control
*mc
;
2540 /* Sanity check for name and max */
2541 if (unlikely(!name
|| max
<= 0))
2544 list_for_each_entry(kctl
, &card
->controls
, list
) {
2545 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2551 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2552 if (max
<= mc
->max
) {
2553 mc
->platform_max
= max
;
2559 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2562 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2563 * mixer info callback
2564 * @kcontrol: mixer control
2565 * @uinfo: control element information
2567 * Returns 0 for success.
2569 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2570 struct snd_ctl_elem_info
*uinfo
)
2572 struct soc_mixer_control
*mc
=
2573 (struct soc_mixer_control
*)kcontrol
->private_value
;
2577 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2579 uinfo
->value
.integer
.min
= 0;
2580 uinfo
->value
.integer
.max
= max
-min
;
2584 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2587 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2588 * mixer get callback
2589 * @kcontrol: mixer control
2590 * @uinfo: control element information
2592 * Returns 0 for success.
2594 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2595 struct snd_ctl_elem_value
*ucontrol
)
2597 struct soc_mixer_control
*mc
=
2598 (struct soc_mixer_control
*)kcontrol
->private_value
;
2599 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2600 unsigned int mask
= (1<<mc
->shift
)-1;
2602 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2603 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2605 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2606 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2609 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2612 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2613 * mixer put callback
2614 * @kcontrol: mixer control
2615 * @uinfo: control element information
2617 * Returns 0 for success.
2619 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2620 struct snd_ctl_elem_value
*ucontrol
)
2622 struct soc_mixer_control
*mc
=
2623 (struct soc_mixer_control
*)kcontrol
->private_value
;
2624 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2625 unsigned int mask
= (1<<mc
->shift
)-1;
2628 unsigned int val
, valr
, oval
, ovalr
;
2630 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2632 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2635 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2636 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2640 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2644 if (ovalr
!= valr
) {
2645 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2652 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2655 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2657 * @clk_id: DAI specific clock ID
2658 * @freq: new clock frequency in Hz
2659 * @dir: new clock direction - input/output.
2661 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2663 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2664 unsigned int freq
, int dir
)
2666 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2667 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2668 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2669 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2674 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2677 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2679 * @clk_id: DAI specific clock ID
2680 * @source: Source for the clock
2681 * @freq: new clock frequency in Hz
2682 * @dir: new clock direction - input/output.
2684 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2686 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2687 int source
, unsigned int freq
, int dir
)
2689 if (codec
->driver
->set_sysclk
)
2690 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2695 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2698 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2700 * @div_id: DAI specific clock divider ID
2701 * @div: new clock divisor.
2703 * Configures the clock dividers. This is used to derive the best DAI bit and
2704 * frame clocks from the system or master clock. It's best to set the DAI bit
2705 * and frame clocks as low as possible to save system power.
2707 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2708 int div_id
, int div
)
2710 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2711 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2715 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2718 * snd_soc_dai_set_pll - configure DAI PLL.
2720 * @pll_id: DAI specific PLL ID
2721 * @source: DAI specific source for the PLL
2722 * @freq_in: PLL input clock frequency in Hz
2723 * @freq_out: requested PLL output clock frequency in Hz
2725 * Configures and enables PLL to generate output clock based on input clock.
2727 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2728 unsigned int freq_in
, unsigned int freq_out
)
2730 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2731 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2733 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2734 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2739 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2742 * snd_soc_codec_set_pll - configure codec PLL.
2744 * @pll_id: DAI specific PLL ID
2745 * @source: DAI specific source for the PLL
2746 * @freq_in: PLL input clock frequency in Hz
2747 * @freq_out: requested PLL output clock frequency in Hz
2749 * Configures and enables PLL to generate output clock based on input clock.
2751 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2752 unsigned int freq_in
, unsigned int freq_out
)
2754 if (codec
->driver
->set_pll
)
2755 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2760 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2763 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2765 * @fmt: SND_SOC_DAIFMT_ format value.
2767 * Configures the DAI hardware format and clocking.
2769 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2771 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2772 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2776 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2779 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2781 * @tx_mask: bitmask representing active TX slots.
2782 * @rx_mask: bitmask representing active RX slots.
2783 * @slots: Number of slots in use.
2784 * @slot_width: Width in bits for each slot.
2786 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2789 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2790 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2792 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2793 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2798 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2801 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2803 * @tx_num: how many TX channels
2804 * @tx_slot: pointer to an array which imply the TX slot number channel
2806 * @rx_num: how many RX channels
2807 * @rx_slot: pointer to an array which imply the RX slot number channel
2810 * configure the relationship between channel number and TDM slot number.
2812 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2813 unsigned int tx_num
, unsigned int *tx_slot
,
2814 unsigned int rx_num
, unsigned int *rx_slot
)
2816 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2817 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2822 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2825 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2827 * @tristate: tristate enable
2829 * Tristates the DAI so that others can use it.
2831 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2833 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2834 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2838 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2841 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2843 * @mute: mute enable
2845 * Mutes the DAI DAC.
2847 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2849 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2850 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2854 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2857 * snd_soc_register_card - Register a card with the ASoC core
2859 * @card: Card to register
2862 int snd_soc_register_card(struct snd_soc_card
*card
)
2866 if (!card
->name
|| !card
->dev
)
2869 dev_set_drvdata(card
->dev
, card
);
2871 snd_soc_initialize_card_lists(card
);
2873 soc_init_card_debugfs(card
);
2875 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
2876 (card
->num_links
+ card
->num_aux_devs
),
2878 if (card
->rtd
== NULL
)
2880 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2882 for (i
= 0; i
< card
->num_links
; i
++)
2883 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2885 INIT_LIST_HEAD(&card
->list
);
2886 card
->instantiated
= 0;
2887 mutex_init(&card
->mutex
);
2889 mutex_lock(&client_mutex
);
2890 list_add(&card
->list
, &card_list
);
2891 snd_soc_instantiate_cards();
2892 mutex_unlock(&client_mutex
);
2894 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2898 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2901 * snd_soc_unregister_card - Unregister a card with the ASoC core
2903 * @card: Card to unregister
2906 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2908 if (card
->instantiated
)
2909 soc_cleanup_card_resources(card
);
2910 mutex_lock(&client_mutex
);
2911 list_del(&card
->list
);
2912 mutex_unlock(&client_mutex
);
2913 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2917 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2920 * Simplify DAI link configuration by removing ".-1" from device names
2921 * and sanitizing names.
2923 static char *fmt_single_name(struct device
*dev
, int *id
)
2925 char *found
, name
[NAME_SIZE
];
2928 if (dev_name(dev
) == NULL
)
2931 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2933 /* are we a "%s.%d" name (platform and SPI components) */
2934 found
= strstr(name
, dev
->driver
->name
);
2937 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2939 /* discard ID from name if ID == -1 */
2941 found
[strlen(dev
->driver
->name
)] = '\0';
2945 /* I2C component devices are named "bus-addr" */
2946 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2947 char tmp
[NAME_SIZE
];
2949 /* create unique ID number from I2C addr and bus */
2950 *id
= ((id1
& 0xffff) << 16) + id2
;
2952 /* sanitize component name for DAI link creation */
2953 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2954 strlcpy(name
, tmp
, NAME_SIZE
);
2959 return kstrdup(name
, GFP_KERNEL
);
2963 * Simplify DAI link naming for single devices with multiple DAIs by removing
2964 * any ".-1" and using the DAI name (instead of device name).
2966 static inline char *fmt_multiple_name(struct device
*dev
,
2967 struct snd_soc_dai_driver
*dai_drv
)
2969 if (dai_drv
->name
== NULL
) {
2970 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
2975 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2979 * snd_soc_register_dai - Register a DAI with the ASoC core
2981 * @dai: DAI to register
2983 int snd_soc_register_dai(struct device
*dev
,
2984 struct snd_soc_dai_driver
*dai_drv
)
2986 struct snd_soc_dai
*dai
;
2988 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
2990 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2994 /* create DAI component name */
2995 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2996 if (dai
->name
== NULL
) {
3002 dai
->driver
= dai_drv
;
3003 if (!dai
->driver
->ops
)
3004 dai
->driver
->ops
= &null_dai_ops
;
3006 mutex_lock(&client_mutex
);
3007 list_add(&dai
->list
, &dai_list
);
3008 snd_soc_instantiate_cards();
3009 mutex_unlock(&client_mutex
);
3011 pr_debug("Registered DAI '%s'\n", dai
->name
);
3015 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3018 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3020 * @dai: DAI to unregister
3022 void snd_soc_unregister_dai(struct device
*dev
)
3024 struct snd_soc_dai
*dai
;
3026 list_for_each_entry(dai
, &dai_list
, list
) {
3027 if (dev
== dai
->dev
)
3033 mutex_lock(&client_mutex
);
3034 list_del(&dai
->list
);
3035 mutex_unlock(&client_mutex
);
3037 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3041 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3044 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3046 * @dai: Array of DAIs to register
3047 * @count: Number of DAIs
3049 int snd_soc_register_dais(struct device
*dev
,
3050 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3052 struct snd_soc_dai
*dai
;
3055 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3057 for (i
= 0; i
< count
; i
++) {
3059 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3065 /* create DAI component name */
3066 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3067 if (dai
->name
== NULL
) {
3074 dai
->driver
= &dai_drv
[i
];
3075 if (dai
->driver
->id
)
3076 dai
->id
= dai
->driver
->id
;
3079 if (!dai
->driver
->ops
)
3080 dai
->driver
->ops
= &null_dai_ops
;
3082 mutex_lock(&client_mutex
);
3083 list_add(&dai
->list
, &dai_list
);
3084 mutex_unlock(&client_mutex
);
3086 pr_debug("Registered DAI '%s'\n", dai
->name
);
3089 mutex_lock(&client_mutex
);
3090 snd_soc_instantiate_cards();
3091 mutex_unlock(&client_mutex
);
3095 for (i
--; i
>= 0; i
--)
3096 snd_soc_unregister_dai(dev
);
3100 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3103 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3105 * @dai: Array of DAIs to unregister
3106 * @count: Number of DAIs
3108 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3112 for (i
= 0; i
< count
; i
++)
3113 snd_soc_unregister_dai(dev
);
3115 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3118 * snd_soc_register_platform - Register a platform with the ASoC core
3120 * @platform: platform to register
3122 int snd_soc_register_platform(struct device
*dev
,
3123 struct snd_soc_platform_driver
*platform_drv
)
3125 struct snd_soc_platform
*platform
;
3127 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3129 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3130 if (platform
== NULL
)
3133 /* create platform component name */
3134 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3135 if (platform
->name
== NULL
) {
3140 platform
->dev
= dev
;
3141 platform
->driver
= platform_drv
;
3142 platform
->dapm
.dev
= dev
;
3143 platform
->dapm
.platform
= platform
;
3144 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3146 mutex_lock(&client_mutex
);
3147 list_add(&platform
->list
, &platform_list
);
3148 snd_soc_instantiate_cards();
3149 mutex_unlock(&client_mutex
);
3151 pr_debug("Registered platform '%s'\n", platform
->name
);
3155 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3158 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3160 * @platform: platform to unregister
3162 void snd_soc_unregister_platform(struct device
*dev
)
3164 struct snd_soc_platform
*platform
;
3166 list_for_each_entry(platform
, &platform_list
, list
) {
3167 if (dev
== platform
->dev
)
3173 mutex_lock(&client_mutex
);
3174 list_del(&platform
->list
);
3175 mutex_unlock(&client_mutex
);
3177 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3178 kfree(platform
->name
);
3181 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3183 static u64 codec_format_map
[] = {
3184 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3185 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3186 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3187 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3188 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3189 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3190 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3191 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3192 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3193 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3194 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3195 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3196 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3197 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3198 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3199 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3202 /* Fix up the DAI formats for endianness: codecs don't actually see
3203 * the endianness of the data but we're using the CPU format
3204 * definitions which do need to include endianness so we ensure that
3205 * codec DAIs always have both big and little endian variants set.
3207 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3211 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3212 if (stream
->formats
& codec_format_map
[i
])
3213 stream
->formats
|= codec_format_map
[i
];
3217 * snd_soc_register_codec - Register a codec with the ASoC core
3219 * @codec: codec to register
3221 int snd_soc_register_codec(struct device
*dev
,
3222 const struct snd_soc_codec_driver
*codec_drv
,
3223 struct snd_soc_dai_driver
*dai_drv
,
3227 struct snd_soc_codec
*codec
;
3230 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3232 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3236 /* create CODEC component name */
3237 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3238 if (codec
->name
== NULL
) {
3243 if (codec_drv
->compress_type
)
3244 codec
->compress_type
= codec_drv
->compress_type
;
3246 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3248 codec
->write
= codec_drv
->write
;
3249 codec
->read
= codec_drv
->read
;
3250 codec
->volatile_register
= codec_drv
->volatile_register
;
3251 codec
->readable_register
= codec_drv
->readable_register
;
3252 codec
->writable_register
= codec_drv
->writable_register
;
3253 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3254 codec
->dapm
.dev
= dev
;
3255 codec
->dapm
.codec
= codec
;
3256 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3257 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
3259 codec
->driver
= codec_drv
;
3260 codec
->num_dai
= num_dai
;
3261 mutex_init(&codec
->mutex
);
3263 /* allocate CODEC register cache */
3264 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3265 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3266 codec
->reg_size
= reg_size
;
3267 /* it is necessary to make a copy of the default register cache
3268 * because in the case of using a compression type that requires
3269 * the default register cache to be marked as __devinitconst the
3270 * kernel might have freed the array by the time we initialize
3273 if (codec_drv
->reg_cache_default
) {
3274 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3275 reg_size
, GFP_KERNEL
);
3276 if (!codec
->reg_def_copy
) {
3283 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3284 if (!codec
->volatile_register
)
3285 codec
->volatile_register
= snd_soc_default_volatile_register
;
3286 if (!codec
->readable_register
)
3287 codec
->readable_register
= snd_soc_default_readable_register
;
3288 if (!codec
->writable_register
)
3289 codec
->writable_register
= snd_soc_default_writable_register
;
3292 for (i
= 0; i
< num_dai
; i
++) {
3293 fixup_codec_formats(&dai_drv
[i
].playback
);
3294 fixup_codec_formats(&dai_drv
[i
].capture
);
3297 /* register any DAIs */
3299 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3304 mutex_lock(&client_mutex
);
3305 list_add(&codec
->list
, &codec_list
);
3306 snd_soc_instantiate_cards();
3307 mutex_unlock(&client_mutex
);
3309 pr_debug("Registered codec '%s'\n", codec
->name
);
3313 kfree(codec
->reg_def_copy
);
3314 codec
->reg_def_copy
= NULL
;
3319 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3322 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3324 * @codec: codec to unregister
3326 void snd_soc_unregister_codec(struct device
*dev
)
3328 struct snd_soc_codec
*codec
;
3331 list_for_each_entry(codec
, &codec_list
, list
) {
3332 if (dev
== codec
->dev
)
3339 for (i
= 0; i
< codec
->num_dai
; i
++)
3340 snd_soc_unregister_dai(dev
);
3342 mutex_lock(&client_mutex
);
3343 list_del(&codec
->list
);
3344 mutex_unlock(&client_mutex
);
3346 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3348 snd_soc_cache_exit(codec
);
3349 kfree(codec
->reg_def_copy
);
3353 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3355 static int __init
snd_soc_init(void)
3357 #ifdef CONFIG_DEBUG_FS
3358 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3359 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3361 "ASoC: Failed to create debugfs directory\n");
3362 snd_soc_debugfs_root
= NULL
;
3365 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3367 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3369 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3371 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3373 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3374 &platform_list_fops
))
3375 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3378 snd_soc_util_init();
3380 return platform_driver_register(&soc_driver
);
3382 module_init(snd_soc_init
);
3384 static void __exit
snd_soc_exit(void)
3386 snd_soc_util_exit();
3388 #ifdef CONFIG_DEBUG_FS
3389 debugfs_remove_recursive(snd_soc_debugfs_root
);
3391 platform_driver_unregister(&soc_driver
);
3393 module_exit(snd_soc_exit
);
3395 /* Module information */
3396 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3397 MODULE_DESCRIPTION("ALSA SoC Core");
3398 MODULE_LICENSE("GPL");
3399 MODULE_ALIAS("platform:soc-audio");