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 (codec
->readable_register
&& !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
;
248 struct snd_soc_codec
*codec
= file
->private_data
;
250 buf_size
= min(count
, (sizeof(buf
)-1));
251 if (copy_from_user(buf
, user_buf
, buf_size
))
255 if (codec
->driver
->reg_cache_step
)
256 step
= codec
->driver
->reg_cache_step
;
258 while (*start
== ' ')
260 reg
= simple_strtoul(start
, &start
, 16);
261 while (*start
== ' ')
263 if (strict_strtoul(start
, 16, &value
))
266 /* Userspace has been fiddling around behind the kernel's back */
267 add_taint(TAINT_USER
);
269 snd_soc_write(codec
, reg
, value
);
273 static const struct file_operations codec_reg_fops
= {
274 .open
= codec_reg_open_file
,
275 .read
= codec_reg_read_file
,
276 .write
= codec_reg_write_file
,
277 .llseek
= default_llseek
,
280 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
282 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
284 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
286 if (!codec
->debugfs_codec_root
) {
288 "ASoC: Failed to create codec debugfs directory\n");
292 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
294 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
297 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
298 codec
->debugfs_codec_root
,
299 codec
, &codec_reg_fops
);
300 if (!codec
->debugfs_reg
)
302 "ASoC: Failed to create codec register debugfs file\n");
304 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
307 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
309 debugfs_remove_recursive(codec
->debugfs_codec_root
);
312 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
313 size_t count
, loff_t
*ppos
)
315 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
316 ssize_t len
, ret
= 0;
317 struct snd_soc_codec
*codec
;
322 list_for_each_entry(codec
, &codec_list
, list
) {
323 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
327 if (ret
> PAGE_SIZE
) {
334 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
341 static const struct file_operations codec_list_fops
= {
342 .read
= codec_list_read_file
,
343 .llseek
= default_llseek
,/* read accesses f_pos */
346 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
347 size_t count
, loff_t
*ppos
)
349 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
350 ssize_t len
, ret
= 0;
351 struct snd_soc_dai
*dai
;
356 list_for_each_entry(dai
, &dai_list
, list
) {
357 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
360 if (ret
> PAGE_SIZE
) {
366 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
373 static const struct file_operations dai_list_fops
= {
374 .read
= dai_list_read_file
,
375 .llseek
= default_llseek
,/* read accesses f_pos */
378 static ssize_t
platform_list_read_file(struct file
*file
,
379 char __user
*user_buf
,
380 size_t count
, loff_t
*ppos
)
382 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
383 ssize_t len
, ret
= 0;
384 struct snd_soc_platform
*platform
;
389 list_for_each_entry(platform
, &platform_list
, list
) {
390 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
394 if (ret
> PAGE_SIZE
) {
400 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
407 static const struct file_operations platform_list_fops
= {
408 .read
= platform_list_read_file
,
409 .llseek
= default_llseek
,/* read accesses f_pos */
412 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
414 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
415 snd_soc_debugfs_root
);
416 if (!card
->debugfs_card_root
) {
418 "ASoC: Failed to create codec debugfs directory\n");
422 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
423 card
->debugfs_card_root
,
425 if (!card
->debugfs_pop_time
)
427 "Failed to create pop time debugfs file\n");
430 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
432 debugfs_remove_recursive(card
->debugfs_card_root
);
437 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
441 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
445 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
449 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
454 #ifdef CONFIG_SND_SOC_AC97_BUS
455 /* unregister ac97 codec */
456 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
458 if (codec
->ac97
->dev
.bus
)
459 device_unregister(&codec
->ac97
->dev
);
463 /* stop no dev release warning */
464 static void soc_ac97_device_release(struct device
*dev
){}
466 /* register ac97 codec to bus */
467 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
471 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
472 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
473 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
475 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
476 codec
->card
->snd_card
->number
, 0, codec
->name
);
477 err
= device_register(&codec
->ac97
->dev
);
479 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
480 codec
->ac97
->dev
.bus
= NULL
;
487 #ifdef CONFIG_PM_SLEEP
488 /* powers down audio subsystem for suspend */
489 int snd_soc_suspend(struct device
*dev
)
491 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
492 struct snd_soc_codec
*codec
;
495 /* If the initialization of this soc device failed, there is no codec
496 * associated with it. Just bail out in this case.
498 if (list_empty(&card
->codec_dev_list
))
501 /* Due to the resume being scheduled into a workqueue we could
502 * suspend before that's finished - wait for it to complete.
504 snd_power_lock(card
->snd_card
);
505 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
506 snd_power_unlock(card
->snd_card
);
508 /* we're going to block userspace touching us until resume completes */
509 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
511 /* mute any active DACs */
512 for (i
= 0; i
< card
->num_rtd
; i
++) {
513 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
514 struct snd_soc_dai_driver
*drv
= dai
->driver
;
516 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
519 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
520 drv
->ops
->digital_mute(dai
, 1);
523 /* suspend all pcms */
524 for (i
= 0; i
< card
->num_rtd
; i
++) {
525 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
528 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
531 if (card
->suspend_pre
)
532 card
->suspend_pre(card
);
534 for (i
= 0; i
< card
->num_rtd
; i
++) {
535 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
536 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
538 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
541 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
542 cpu_dai
->driver
->suspend(cpu_dai
);
543 if (platform
->driver
->suspend
&& !platform
->suspended
) {
544 platform
->driver
->suspend(cpu_dai
);
545 platform
->suspended
= 1;
549 /* close any waiting streams and save state */
550 for (i
= 0; i
< card
->num_rtd
; i
++) {
551 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
552 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
555 for (i
= 0; i
< card
->num_rtd
; i
++) {
556 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
558 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
561 if (driver
->playback
.stream_name
!= NULL
)
562 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
563 SND_SOC_DAPM_STREAM_SUSPEND
);
565 if (driver
->capture
.stream_name
!= NULL
)
566 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
567 SND_SOC_DAPM_STREAM_SUSPEND
);
570 /* suspend all CODECs */
571 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
572 /* If there are paths active then the CODEC will be held with
573 * bias _ON and should not be suspended. */
574 if (!codec
->suspended
&& codec
->driver
->suspend
) {
575 switch (codec
->dapm
.bias_level
) {
576 case SND_SOC_BIAS_STANDBY
:
577 case SND_SOC_BIAS_OFF
:
578 codec
->driver
->suspend(codec
, PMSG_SUSPEND
);
579 codec
->suspended
= 1;
582 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
588 for (i
= 0; i
< card
->num_rtd
; i
++) {
589 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
591 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
594 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
595 cpu_dai
->driver
->suspend(cpu_dai
);
598 if (card
->suspend_post
)
599 card
->suspend_post(card
);
603 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
605 /* deferred resume work, so resume can complete before we finished
606 * setting our codec back up, which can be very slow on I2C
608 static void soc_resume_deferred(struct work_struct
*work
)
610 struct snd_soc_card
*card
=
611 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
612 struct snd_soc_codec
*codec
;
615 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
616 * so userspace apps are blocked from touching us
619 dev_dbg(card
->dev
, "starting resume work\n");
621 /* Bring us up into D2 so that DAPM starts enabling things */
622 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
624 if (card
->resume_pre
)
625 card
->resume_pre(card
);
627 /* resume AC97 DAIs */
628 for (i
= 0; i
< card
->num_rtd
; i
++) {
629 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
631 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
634 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
635 cpu_dai
->driver
->resume(cpu_dai
);
638 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
639 /* If the CODEC was idle over suspend then it will have been
640 * left with bias OFF or STANDBY and suspended so we must now
641 * resume. Otherwise the suspend was suppressed.
643 if (codec
->driver
->resume
&& codec
->suspended
) {
644 switch (codec
->dapm
.bias_level
) {
645 case SND_SOC_BIAS_STANDBY
:
646 case SND_SOC_BIAS_OFF
:
647 codec
->driver
->resume(codec
);
648 codec
->suspended
= 0;
651 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
657 for (i
= 0; i
< card
->num_rtd
; i
++) {
658 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
660 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
663 if (driver
->playback
.stream_name
!= NULL
)
664 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
665 SND_SOC_DAPM_STREAM_RESUME
);
667 if (driver
->capture
.stream_name
!= NULL
)
668 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
669 SND_SOC_DAPM_STREAM_RESUME
);
672 /* unmute any active DACs */
673 for (i
= 0; i
< card
->num_rtd
; i
++) {
674 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
675 struct snd_soc_dai_driver
*drv
= dai
->driver
;
677 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
680 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
681 drv
->ops
->digital_mute(dai
, 0);
684 for (i
= 0; i
< card
->num_rtd
; i
++) {
685 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
686 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
688 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
691 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
692 cpu_dai
->driver
->resume(cpu_dai
);
693 if (platform
->driver
->resume
&& platform
->suspended
) {
694 platform
->driver
->resume(cpu_dai
);
695 platform
->suspended
= 0;
699 if (card
->resume_post
)
700 card
->resume_post(card
);
702 dev_dbg(card
->dev
, "resume work completed\n");
704 /* userspace can access us now we are back as we were before */
705 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
708 /* powers up audio subsystem after a suspend */
709 int snd_soc_resume(struct device
*dev
)
711 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
712 int i
, ac97_control
= 0;
714 /* AC97 devices might have other drivers hanging off them so
715 * need to resume immediately. Other drivers don't have that
716 * problem and may take a substantial amount of time to resume
717 * due to I/O costs and anti-pop so handle them out of line.
719 for (i
= 0; i
< card
->num_rtd
; i
++) {
720 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
721 ac97_control
|= cpu_dai
->driver
->ac97_control
;
724 dev_dbg(dev
, "Resuming AC97 immediately\n");
725 soc_resume_deferred(&card
->deferred_resume_work
);
727 dev_dbg(dev
, "Scheduling resume work\n");
728 if (!schedule_work(&card
->deferred_resume_work
))
729 dev_err(dev
, "resume work item may be lost\n");
734 EXPORT_SYMBOL_GPL(snd_soc_resume
);
736 #define snd_soc_suspend NULL
737 #define snd_soc_resume NULL
740 static struct snd_soc_dai_ops null_dai_ops
= {
743 static int soc_bind_dai_link(struct snd_soc_card
*card
, int num
)
745 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
746 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
747 struct snd_soc_codec
*codec
;
748 struct snd_soc_platform
*platform
;
749 struct snd_soc_dai
*codec_dai
, *cpu_dai
;
750 const char *platform_name
;
754 dev_dbg(card
->dev
, "binding %s at idx %d\n", dai_link
->name
, num
);
756 /* do we already have the CPU DAI for this link ? */
760 /* no, then find CPU DAI from registered DAIs*/
761 list_for_each_entry(cpu_dai
, &dai_list
, list
) {
762 if (!strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
)) {
763 rtd
->cpu_dai
= cpu_dai
;
767 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
768 dai_link
->cpu_dai_name
);
771 /* do we already have the CODEC for this link ? */
776 /* no, then find CODEC from registered CODECs*/
777 list_for_each_entry(codec
, &codec_list
, list
) {
778 if (!strcmp(codec
->name
, dai_link
->codec_name
)) {
781 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
782 list_for_each_entry(codec_dai
, &dai_list
, list
) {
783 if (codec
->dev
== codec_dai
->dev
&&
784 !strcmp(codec_dai
->name
, dai_link
->codec_dai_name
)) {
785 rtd
->codec_dai
= codec_dai
;
789 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
790 dai_link
->codec_dai_name
);
795 dev_dbg(card
->dev
, "CODEC %s not registered\n",
796 dai_link
->codec_name
);
799 /* do we need a platform? */
803 /* if there's no platform we match on the empty platform */
804 platform_name
= dai_link
->platform_name
;
806 platform_name
= "snd-soc-dummy";
808 /* no, then find one from the set of registered platforms */
809 list_for_each_entry(platform
, &platform_list
, list
) {
810 if (!strcmp(platform
->name
, platform_name
)) {
811 rtd
->platform
= platform
;
816 dev_dbg(card
->dev
, "platform %s not registered\n",
817 dai_link
->platform_name
);
821 /* mark rtd as complete if we found all 4 of our client devices */
822 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
829 static void soc_remove_codec(struct snd_soc_codec
*codec
)
833 if (codec
->driver
->remove
) {
834 err
= codec
->driver
->remove(codec
);
837 "asoc: failed to remove %s: %d\n",
841 /* Make sure all DAPM widgets are freed */
842 snd_soc_dapm_free(&codec
->dapm
);
844 soc_cleanup_codec_debugfs(codec
);
846 list_del(&codec
->card_list
);
847 module_put(codec
->dev
->driver
->owner
);
850 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
852 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
853 struct snd_soc_codec
*codec
= rtd
->codec
;
854 struct snd_soc_platform
*platform
= rtd
->platform
;
855 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
858 /* unregister the rtd device */
859 if (rtd
->dev_registered
) {
860 device_remove_file(&rtd
->dev
, &dev_attr_pmdown_time
);
861 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
862 device_unregister(&rtd
->dev
);
863 rtd
->dev_registered
= 0;
866 /* remove the CODEC DAI */
867 if (codec_dai
&& codec_dai
->probed
&&
868 codec_dai
->driver
->remove_order
== order
) {
869 if (codec_dai
->driver
->remove
) {
870 err
= codec_dai
->driver
->remove(codec_dai
);
872 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
874 codec_dai
->probed
= 0;
875 list_del(&codec_dai
->card_list
);
878 /* remove the platform */
879 if (platform
&& platform
->probed
&&
880 platform
->driver
->remove_order
== order
) {
881 if (platform
->driver
->remove
) {
882 err
= platform
->driver
->remove(platform
);
884 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
886 platform
->probed
= 0;
887 list_del(&platform
->card_list
);
888 module_put(platform
->dev
->driver
->owner
);
891 /* remove the CODEC */
892 if (codec
&& codec
->probed
&&
893 codec
->driver
->remove_order
== order
)
894 soc_remove_codec(codec
);
896 /* remove the cpu_dai */
897 if (cpu_dai
&& cpu_dai
->probed
&&
898 cpu_dai
->driver
->remove_order
== order
) {
899 if (cpu_dai
->driver
->remove
) {
900 err
= cpu_dai
->driver
->remove(cpu_dai
);
902 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
905 list_del(&cpu_dai
->card_list
);
906 module_put(cpu_dai
->dev
->driver
->owner
);
910 static void soc_remove_dai_links(struct snd_soc_card
*card
)
914 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
916 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
917 soc_remove_dai_link(card
, dai
, order
);
922 static void soc_set_name_prefix(struct snd_soc_card
*card
,
923 struct snd_soc_codec
*codec
)
927 if (card
->codec_conf
== NULL
)
930 for (i
= 0; i
< card
->num_configs
; i
++) {
931 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
932 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
933 codec
->name_prefix
= map
->name_prefix
;
939 static int soc_probe_codec(struct snd_soc_card
*card
,
940 struct snd_soc_codec
*codec
)
943 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
946 codec
->dapm
.card
= card
;
947 soc_set_name_prefix(card
, codec
);
949 if (!try_module_get(codec
->dev
->driver
->owner
))
952 soc_init_codec_debugfs(codec
);
954 if (driver
->dapm_widgets
)
955 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
956 driver
->num_dapm_widgets
);
959 ret
= driver
->probe(codec
);
962 "asoc: failed to probe CODEC %s: %d\n",
968 if (driver
->controls
)
969 snd_soc_add_controls(codec
, driver
->controls
,
970 driver
->num_controls
);
971 if (driver
->dapm_routes
)
972 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
973 driver
->num_dapm_routes
);
975 /* mark codec as probed and add to card codec list */
977 list_add(&codec
->card_list
, &card
->codec_dev_list
);
978 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
983 soc_cleanup_codec_debugfs(codec
);
984 module_put(codec
->dev
->driver
->owner
);
989 static int soc_probe_platform(struct snd_soc_card
*card
,
990 struct snd_soc_platform
*platform
)
993 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
995 platform
->card
= card
;
996 platform
->dapm
.card
= card
;
998 if (!try_module_get(platform
->dev
->driver
->owner
))
1001 if (driver
->dapm_widgets
)
1002 snd_soc_dapm_new_controls(&platform
->dapm
,
1003 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1005 if (driver
->probe
) {
1006 ret
= driver
->probe(platform
);
1008 dev_err(platform
->dev
,
1009 "asoc: failed to probe platform %s: %d\n",
1010 platform
->name
, ret
);
1015 if (driver
->controls
)
1016 snd_soc_add_platform_controls(platform
, driver
->controls
,
1017 driver
->num_controls
);
1018 if (driver
->dapm_routes
)
1019 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1020 driver
->num_dapm_routes
);
1022 /* mark platform as probed and add to card platform list */
1023 platform
->probed
= 1;
1024 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1025 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1030 module_put(platform
->dev
->driver
->owner
);
1035 static void rtd_release(struct device
*dev
) {}
1037 static int soc_post_component_init(struct snd_soc_card
*card
,
1038 struct snd_soc_codec
*codec
,
1039 int num
, int dailess
)
1041 struct snd_soc_dai_link
*dai_link
= NULL
;
1042 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1043 struct snd_soc_pcm_runtime
*rtd
;
1044 const char *temp
, *name
;
1048 dai_link
= &card
->dai_link
[num
];
1049 rtd
= &card
->rtd
[num
];
1050 name
= dai_link
->name
;
1052 aux_dev
= &card
->aux_dev
[num
];
1053 rtd
= &card
->rtd_aux
[num
];
1054 name
= aux_dev
->name
;
1058 /* machine controls, routes and widgets are not prefixed */
1059 temp
= codec
->name_prefix
;
1060 codec
->name_prefix
= NULL
;
1062 /* do machine specific initialization */
1063 if (!dailess
&& dai_link
->init
)
1064 ret
= dai_link
->init(rtd
);
1065 else if (dailess
&& aux_dev
->init
)
1066 ret
= aux_dev
->init(&codec
->dapm
);
1068 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1071 codec
->name_prefix
= temp
;
1073 /* Make sure all DAPM widgets are instantiated */
1074 snd_soc_dapm_new_widgets(&codec
->dapm
);
1076 /* register the rtd device */
1078 rtd
->dev
.parent
= card
->dev
;
1079 rtd
->dev
.release
= rtd_release
;
1080 rtd
->dev
.init_name
= name
;
1081 mutex_init(&rtd
->pcm_mutex
);
1082 ret
= device_register(&rtd
->dev
);
1085 "asoc: failed to register runtime device: %d\n", ret
);
1088 rtd
->dev_registered
= 1;
1090 /* add DAPM sysfs entries for this codec */
1091 ret
= snd_soc_dapm_sys_add(&rtd
->dev
);
1094 "asoc: failed to add codec dapm sysfs entries: %d\n",
1097 /* add codec sysfs entries */
1098 ret
= device_create_file(&rtd
->dev
, &dev_attr_codec_reg
);
1101 "asoc: failed to add codec sysfs files: %d\n", ret
);
1106 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1108 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1109 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1110 struct snd_soc_codec
*codec
= rtd
->codec
;
1111 struct snd_soc_platform
*platform
= rtd
->platform
;
1112 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1115 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1116 card
->name
, num
, order
);
1118 /* config components */
1119 codec_dai
->codec
= codec
;
1120 cpu_dai
->platform
= platform
;
1121 codec_dai
->card
= card
;
1122 cpu_dai
->card
= card
;
1124 /* set default power off timeout */
1125 rtd
->pmdown_time
= pmdown_time
;
1127 /* probe the cpu_dai */
1128 if (!cpu_dai
->probed
&&
1129 cpu_dai
->driver
->probe_order
== order
) {
1130 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1133 if (cpu_dai
->driver
->probe
) {
1134 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1136 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1138 module_put(cpu_dai
->dev
->driver
->owner
);
1142 cpu_dai
->probed
= 1;
1143 /* mark cpu_dai as probed and add to card cpu_dai list */
1144 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1147 /* probe the CODEC */
1148 if (!codec
->probed
&&
1149 codec
->driver
->probe_order
== order
) {
1150 ret
= soc_probe_codec(card
, codec
);
1155 /* probe the platform */
1156 if (!platform
->probed
&&
1157 platform
->driver
->probe_order
== order
) {
1158 ret
= soc_probe_platform(card
, platform
);
1163 /* probe the CODEC DAI */
1164 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1165 if (codec_dai
->driver
->probe
) {
1166 ret
= codec_dai
->driver
->probe(codec_dai
);
1168 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1174 /* mark cpu_dai as probed and add to card cpu_dai list */
1175 codec_dai
->probed
= 1;
1176 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1179 /* complete DAI probe during last probe */
1180 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1183 ret
= soc_post_component_init(card
, codec
, num
, 0);
1187 ret
= device_create_file(&rtd
->dev
, &dev_attr_pmdown_time
);
1189 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1191 /* create the pcm */
1192 ret
= soc_new_pcm(rtd
, num
);
1194 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1198 /* add platform data for AC97 devices */
1199 if (rtd
->codec_dai
->driver
->ac97_control
)
1200 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1205 #ifdef CONFIG_SND_SOC_AC97_BUS
1206 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1210 /* Only instantiate AC97 if not already done by the adaptor
1211 * for the generic AC97 subsystem.
1213 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1215 * It is possible that the AC97 device is already registered to
1216 * the device subsystem. This happens when the device is created
1217 * via snd_ac97_mixer(). Currently only SoC codec that does so
1218 * is the generic AC97 glue but others migh emerge.
1220 * In those cases we don't try to register the device again.
1222 if (!rtd
->codec
->ac97_created
)
1225 ret
= soc_ac97_dev_register(rtd
->codec
);
1227 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1231 rtd
->codec
->ac97_registered
= 1;
1236 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1238 if (codec
->ac97_registered
) {
1239 soc_ac97_dev_unregister(codec
);
1240 codec
->ac97_registered
= 0;
1245 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1247 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1248 struct snd_soc_codec
*codec
;
1251 /* find CODEC from registered CODECs*/
1252 list_for_each_entry(codec
, &codec_list
, list
) {
1253 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1254 if (codec
->probed
) {
1256 "asoc: codec already probed");
1263 /* codec not found */
1264 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1268 ret
= soc_probe_codec(card
, codec
);
1272 ret
= soc_post_component_init(card
, codec
, num
, 1);
1278 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1280 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1281 struct snd_soc_codec
*codec
= rtd
->codec
;
1283 /* unregister the rtd device */
1284 if (rtd
->dev_registered
) {
1285 device_remove_file(&rtd
->dev
, &dev_attr_codec_reg
);
1286 device_unregister(&rtd
->dev
);
1287 rtd
->dev_registered
= 0;
1290 if (codec
&& codec
->probed
)
1291 soc_remove_codec(codec
);
1294 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1295 enum snd_soc_compress_type compress_type
)
1299 if (codec
->cache_init
)
1302 /* override the compress_type if necessary */
1303 if (compress_type
&& codec
->compress_type
!= compress_type
)
1304 codec
->compress_type
= compress_type
;
1305 ret
= snd_soc_cache_init(codec
);
1307 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1311 codec
->cache_init
= 1;
1315 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1317 struct snd_soc_codec
*codec
;
1318 struct snd_soc_codec_conf
*codec_conf
;
1319 enum snd_soc_compress_type compress_type
;
1322 mutex_lock(&card
->mutex
);
1324 if (card
->instantiated
) {
1325 mutex_unlock(&card
->mutex
);
1330 for (i
= 0; i
< card
->num_links
; i
++)
1331 soc_bind_dai_link(card
, i
);
1333 /* bind completed ? */
1334 if (card
->num_rtd
!= card
->num_links
) {
1335 mutex_unlock(&card
->mutex
);
1339 /* initialize the register cache for each available codec */
1340 list_for_each_entry(codec
, &codec_list
, list
) {
1341 if (codec
->cache_init
)
1343 /* by default we don't override the compress_type */
1345 /* check to see if we need to override the compress_type */
1346 for (i
= 0; i
< card
->num_configs
; ++i
) {
1347 codec_conf
= &card
->codec_conf
[i
];
1348 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1349 compress_type
= codec_conf
->compress_type
;
1350 if (compress_type
&& compress_type
1351 != codec
->compress_type
)
1355 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1357 mutex_unlock(&card
->mutex
);
1362 /* card bind complete so register a sound card */
1363 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1364 card
->owner
, 0, &card
->snd_card
);
1366 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1368 mutex_unlock(&card
->mutex
);
1371 card
->snd_card
->dev
= card
->dev
;
1373 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1374 card
->dapm
.dev
= card
->dev
;
1375 card
->dapm
.card
= card
;
1376 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1378 #ifdef CONFIG_DEBUG_FS
1379 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1382 #ifdef CONFIG_PM_SLEEP
1383 /* deferred resume work */
1384 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1387 if (card
->dapm_widgets
)
1388 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1389 card
->num_dapm_widgets
);
1391 /* initialise the sound card only once */
1393 ret
= card
->probe(card
);
1395 goto card_probe_error
;
1398 /* early DAI link probe */
1399 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1401 for (i
= 0; i
< card
->num_links
; i
++) {
1402 ret
= soc_probe_dai_link(card
, i
, order
);
1404 pr_err("asoc: failed to instantiate card %s: %d\n",
1411 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1412 ret
= soc_probe_aux_dev(card
, i
);
1414 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1416 goto probe_aux_dev_err
;
1420 /* We should have a non-codec control add function but we don't */
1422 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1423 struct snd_soc_codec
,
1426 card
->num_controls
);
1428 if (card
->dapm_routes
)
1429 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1430 card
->num_dapm_routes
);
1432 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1434 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1435 "%s", card
->long_name
? card
->long_name
: card
->name
);
1436 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1437 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
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
);
1671 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1673 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1674 unsigned int reg
, unsigned int val
)
1676 if (!platform
->driver
->write
) {
1677 dev_err(platform
->dev
, "platform has no write back\n");
1681 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1682 return platform
->driver
->write(platform
, reg
, val
);
1684 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1687 * snd_soc_new_ac97_codec - initailise AC97 device
1688 * @codec: audio codec
1689 * @ops: AC97 bus operations
1690 * @num: AC97 codec number
1692 * Initialises AC97 codec resources for use by ad-hoc devices only.
1694 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1695 struct snd_ac97_bus_ops
*ops
, int num
)
1697 mutex_lock(&codec
->mutex
);
1699 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1700 if (codec
->ac97
== NULL
) {
1701 mutex_unlock(&codec
->mutex
);
1705 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1706 if (codec
->ac97
->bus
== NULL
) {
1709 mutex_unlock(&codec
->mutex
);
1713 codec
->ac97
->bus
->ops
= ops
;
1714 codec
->ac97
->num
= num
;
1717 * Mark the AC97 device to be created by us. This way we ensure that the
1718 * device will be registered with the device subsystem later on.
1720 codec
->ac97_created
= 1;
1722 mutex_unlock(&codec
->mutex
);
1725 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1728 * snd_soc_free_ac97_codec - free AC97 codec device
1729 * @codec: audio codec
1731 * Frees AC97 codec device resources.
1733 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1735 mutex_lock(&codec
->mutex
);
1736 #ifdef CONFIG_SND_SOC_AC97_BUS
1737 soc_unregister_ac97_dai_link(codec
);
1739 kfree(codec
->ac97
->bus
);
1742 codec
->ac97_created
= 0;
1743 mutex_unlock(&codec
->mutex
);
1745 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1747 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1751 ret
= codec
->read(codec
, reg
);
1752 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1753 trace_snd_soc_reg_read(codec
, reg
, ret
);
1757 EXPORT_SYMBOL_GPL(snd_soc_read
);
1759 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
1760 unsigned int reg
, unsigned int val
)
1762 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
1763 trace_snd_soc_reg_write(codec
, reg
, val
);
1764 return codec
->write(codec
, reg
, val
);
1766 EXPORT_SYMBOL_GPL(snd_soc_write
);
1768 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
1769 unsigned int reg
, const void *data
, size_t len
)
1771 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
1773 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
1776 * snd_soc_update_bits - update codec register bits
1777 * @codec: audio codec
1778 * @reg: codec register
1779 * @mask: register mask
1782 * Writes new register value.
1784 * Returns 1 for change, 0 for no change, or negative error code.
1786 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1787 unsigned int mask
, unsigned int value
)
1790 unsigned int old
, new;
1793 ret
= snd_soc_read(codec
, reg
);
1798 new = (old
& ~mask
) | (value
& mask
);
1799 change
= old
!= new;
1801 ret
= snd_soc_write(codec
, reg
, new);
1808 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1811 * snd_soc_update_bits_locked - update codec register bits
1812 * @codec: audio codec
1813 * @reg: codec register
1814 * @mask: register mask
1817 * Writes new register value, and takes the codec mutex.
1819 * Returns 1 for change else 0.
1821 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1822 unsigned short reg
, unsigned int mask
,
1827 mutex_lock(&codec
->mutex
);
1828 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1829 mutex_unlock(&codec
->mutex
);
1833 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1836 * snd_soc_test_bits - test register for change
1837 * @codec: audio codec
1838 * @reg: codec register
1839 * @mask: register mask
1842 * Tests a register with a new value and checks if the new value is
1843 * different from the old value.
1845 * Returns 1 for change else 0.
1847 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1848 unsigned int mask
, unsigned int value
)
1851 unsigned int old
, new;
1853 old
= snd_soc_read(codec
, reg
);
1854 new = (old
& ~mask
) | value
;
1855 change
= old
!= new;
1859 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1862 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1863 * @substream: the pcm substream
1864 * @hw: the hardware parameters
1866 * Sets the substream runtime hardware parameters.
1868 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1869 const struct snd_pcm_hardware
*hw
)
1871 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1872 runtime
->hw
.info
= hw
->info
;
1873 runtime
->hw
.formats
= hw
->formats
;
1874 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1875 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1876 runtime
->hw
.periods_min
= hw
->periods_min
;
1877 runtime
->hw
.periods_max
= hw
->periods_max
;
1878 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1879 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1882 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1885 * snd_soc_cnew - create new control
1886 * @_template: control template
1887 * @data: control private data
1888 * @long_name: control long name
1889 * @prefix: control name prefix
1891 * Create a new mixer control from a template control.
1893 * Returns 0 for success, else error.
1895 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1896 void *data
, char *long_name
,
1899 struct snd_kcontrol_new
template;
1900 struct snd_kcontrol
*kcontrol
;
1904 memcpy(&template, _template
, sizeof(template));
1908 long_name
= template.name
;
1911 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
1912 name
= kmalloc(name_len
, GFP_ATOMIC
);
1916 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
1918 template.name
= name
;
1920 template.name
= long_name
;
1923 kcontrol
= snd_ctl_new1(&template, data
);
1929 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
1932 * snd_soc_add_controls - add an array of controls to a codec.
1933 * Convienience function to add a list of controls. Many codecs were
1934 * duplicating this code.
1936 * @codec: codec to add controls to
1937 * @controls: array of controls to add
1938 * @num_controls: number of elements in the array
1940 * Return 0 for success, else error.
1942 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
1943 const struct snd_kcontrol_new
*controls
, int num_controls
)
1945 struct snd_card
*card
= codec
->card
->snd_card
;
1948 for (i
= 0; i
< num_controls
; i
++) {
1949 const struct snd_kcontrol_new
*control
= &controls
[i
];
1950 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
1952 codec
->name_prefix
));
1954 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
1955 codec
->name
, control
->name
, err
);
1962 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
1965 * snd_soc_add_platform_controls - add an array of controls to a platform.
1966 * Convienience function to add a list of controls.
1968 * @platform: platform to add controls to
1969 * @controls: array of controls to add
1970 * @num_controls: number of elements in the array
1972 * Return 0 for success, else error.
1974 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
1975 const struct snd_kcontrol_new
*controls
, int num_controls
)
1977 struct snd_card
*card
= platform
->card
->snd_card
;
1980 for (i
= 0; i
< num_controls
; i
++) {
1981 const struct snd_kcontrol_new
*control
= &controls
[i
];
1982 err
= snd_ctl_add(card
, snd_soc_cnew(control
, platform
,
1983 control
->name
, NULL
));
1985 dev_err(platform
->dev
, "Failed to add %s %d\n",control
->name
, err
);
1992 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
1995 * snd_soc_info_enum_double - enumerated double mixer info callback
1996 * @kcontrol: mixer control
1997 * @uinfo: control element information
1999 * Callback to provide information about a double enumerated
2002 * Returns 0 for success.
2004 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2005 struct snd_ctl_elem_info
*uinfo
)
2007 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2009 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2010 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2011 uinfo
->value
.enumerated
.items
= e
->max
;
2013 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2014 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2015 strcpy(uinfo
->value
.enumerated
.name
,
2016 e
->texts
[uinfo
->value
.enumerated
.item
]);
2019 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2022 * snd_soc_get_enum_double - enumerated double mixer get callback
2023 * @kcontrol: mixer control
2024 * @ucontrol: control element information
2026 * Callback to get the value of a double enumerated mixer.
2028 * Returns 0 for success.
2030 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2031 struct snd_ctl_elem_value
*ucontrol
)
2033 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2034 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2035 unsigned int val
, bitmask
;
2037 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2039 val
= snd_soc_read(codec
, e
->reg
);
2040 ucontrol
->value
.enumerated
.item
[0]
2041 = (val
>> e
->shift_l
) & (bitmask
- 1);
2042 if (e
->shift_l
!= e
->shift_r
)
2043 ucontrol
->value
.enumerated
.item
[1] =
2044 (val
>> e
->shift_r
) & (bitmask
- 1);
2048 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2051 * snd_soc_put_enum_double - enumerated double mixer put callback
2052 * @kcontrol: mixer control
2053 * @ucontrol: control element information
2055 * Callback to set the value of a double enumerated mixer.
2057 * Returns 0 for success.
2059 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2060 struct snd_ctl_elem_value
*ucontrol
)
2062 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2063 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2065 unsigned int mask
, bitmask
;
2067 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2069 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2071 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2072 mask
= (bitmask
- 1) << e
->shift_l
;
2073 if (e
->shift_l
!= e
->shift_r
) {
2074 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2076 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2077 mask
|= (bitmask
- 1) << e
->shift_r
;
2080 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2082 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2085 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2086 * @kcontrol: mixer control
2087 * @ucontrol: control element information
2089 * Callback to get the value of a double semi enumerated mixer.
2091 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2092 * used for handling bitfield coded enumeration for example.
2094 * Returns 0 for success.
2096 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2097 struct snd_ctl_elem_value
*ucontrol
)
2099 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2100 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2101 unsigned int reg_val
, val
, mux
;
2103 reg_val
= snd_soc_read(codec
, e
->reg
);
2104 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2105 for (mux
= 0; mux
< e
->max
; mux
++) {
2106 if (val
== e
->values
[mux
])
2109 ucontrol
->value
.enumerated
.item
[0] = mux
;
2110 if (e
->shift_l
!= e
->shift_r
) {
2111 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2112 for (mux
= 0; mux
< e
->max
; mux
++) {
2113 if (val
== e
->values
[mux
])
2116 ucontrol
->value
.enumerated
.item
[1] = mux
;
2121 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2124 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2125 * @kcontrol: mixer control
2126 * @ucontrol: control element information
2128 * Callback to set the value of a double semi enumerated mixer.
2130 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2131 * used for handling bitfield coded enumeration for example.
2133 * Returns 0 for success.
2135 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2136 struct snd_ctl_elem_value
*ucontrol
)
2138 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2139 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2143 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2145 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2146 mask
= e
->mask
<< e
->shift_l
;
2147 if (e
->shift_l
!= e
->shift_r
) {
2148 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2150 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2151 mask
|= e
->mask
<< e
->shift_r
;
2154 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2156 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2159 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2160 * @kcontrol: mixer control
2161 * @uinfo: control element information
2163 * Callback to provide information about an external enumerated
2166 * Returns 0 for success.
2168 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2169 struct snd_ctl_elem_info
*uinfo
)
2171 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2173 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2175 uinfo
->value
.enumerated
.items
= e
->max
;
2177 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2178 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2179 strcpy(uinfo
->value
.enumerated
.name
,
2180 e
->texts
[uinfo
->value
.enumerated
.item
]);
2183 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2186 * snd_soc_info_volsw_ext - external single mixer info callback
2187 * @kcontrol: mixer control
2188 * @uinfo: control element information
2190 * Callback to provide information about a single external mixer control.
2192 * Returns 0 for success.
2194 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2195 struct snd_ctl_elem_info
*uinfo
)
2197 int max
= kcontrol
->private_value
;
2199 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2200 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2202 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2205 uinfo
->value
.integer
.min
= 0;
2206 uinfo
->value
.integer
.max
= max
;
2209 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2212 * snd_soc_info_volsw - single mixer info callback
2213 * @kcontrol: mixer control
2214 * @uinfo: control element information
2216 * Callback to provide information about a single mixer control.
2218 * Returns 0 for success.
2220 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2221 struct snd_ctl_elem_info
*uinfo
)
2223 struct soc_mixer_control
*mc
=
2224 (struct soc_mixer_control
*)kcontrol
->private_value
;
2226 unsigned int shift
= mc
->shift
;
2227 unsigned int rshift
= mc
->rshift
;
2229 if (!mc
->platform_max
)
2230 mc
->platform_max
= mc
->max
;
2231 platform_max
= mc
->platform_max
;
2233 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2234 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2236 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2238 uinfo
->count
= shift
== rshift
? 1 : 2;
2239 uinfo
->value
.integer
.min
= 0;
2240 uinfo
->value
.integer
.max
= platform_max
;
2243 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2246 * snd_soc_get_volsw - single mixer get callback
2247 * @kcontrol: mixer control
2248 * @ucontrol: control element information
2250 * Callback to get the value of a single mixer control.
2252 * Returns 0 for success.
2254 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2255 struct snd_ctl_elem_value
*ucontrol
)
2257 struct soc_mixer_control
*mc
=
2258 (struct soc_mixer_control
*)kcontrol
->private_value
;
2259 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2260 unsigned int reg
= mc
->reg
;
2261 unsigned int shift
= mc
->shift
;
2262 unsigned int rshift
= mc
->rshift
;
2264 unsigned int mask
= (1 << fls(max
)) - 1;
2265 unsigned int invert
= mc
->invert
;
2267 ucontrol
->value
.integer
.value
[0] =
2268 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2269 if (shift
!= rshift
)
2270 ucontrol
->value
.integer
.value
[1] =
2271 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2273 ucontrol
->value
.integer
.value
[0] =
2274 max
- ucontrol
->value
.integer
.value
[0];
2275 if (shift
!= rshift
)
2276 ucontrol
->value
.integer
.value
[1] =
2277 max
- ucontrol
->value
.integer
.value
[1];
2282 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2285 * snd_soc_put_volsw - single mixer put callback
2286 * @kcontrol: mixer control
2287 * @ucontrol: control element information
2289 * Callback to set the value of a single mixer control.
2291 * Returns 0 for success.
2293 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2294 struct snd_ctl_elem_value
*ucontrol
)
2296 struct soc_mixer_control
*mc
=
2297 (struct soc_mixer_control
*)kcontrol
->private_value
;
2298 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2299 unsigned int reg
= mc
->reg
;
2300 unsigned int shift
= mc
->shift
;
2301 unsigned int rshift
= mc
->rshift
;
2303 unsigned int mask
= (1 << fls(max
)) - 1;
2304 unsigned int invert
= mc
->invert
;
2305 unsigned int val
, val2
, val_mask
;
2307 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2310 val_mask
= mask
<< shift
;
2312 if (shift
!= rshift
) {
2313 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2316 val_mask
|= mask
<< rshift
;
2317 val
|= val2
<< rshift
;
2319 return snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2321 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2324 * snd_soc_info_volsw_2r - double mixer info callback
2325 * @kcontrol: mixer control
2326 * @uinfo: control element information
2328 * Callback to provide information about a double mixer control that
2329 * spans 2 codec registers.
2331 * Returns 0 for success.
2333 int snd_soc_info_volsw_2r(struct snd_kcontrol
*kcontrol
,
2334 struct snd_ctl_elem_info
*uinfo
)
2336 struct soc_mixer_control
*mc
=
2337 (struct soc_mixer_control
*)kcontrol
->private_value
;
2340 if (!mc
->platform_max
)
2341 mc
->platform_max
= mc
->max
;
2342 platform_max
= mc
->platform_max
;
2344 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2345 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2347 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2350 uinfo
->value
.integer
.min
= 0;
2351 uinfo
->value
.integer
.max
= platform_max
;
2354 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r
);
2357 * snd_soc_get_volsw_2r - double mixer get callback
2358 * @kcontrol: mixer control
2359 * @ucontrol: control element information
2361 * Callback to get the value of a double mixer control that spans 2 registers.
2363 * Returns 0 for success.
2365 int snd_soc_get_volsw_2r(struct snd_kcontrol
*kcontrol
,
2366 struct snd_ctl_elem_value
*ucontrol
)
2368 struct soc_mixer_control
*mc
=
2369 (struct soc_mixer_control
*)kcontrol
->private_value
;
2370 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2371 unsigned int reg
= mc
->reg
;
2372 unsigned int reg2
= mc
->rreg
;
2373 unsigned int shift
= mc
->shift
;
2375 unsigned int mask
= (1 << fls(max
)) - 1;
2376 unsigned int invert
= mc
->invert
;
2378 ucontrol
->value
.integer
.value
[0] =
2379 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2380 ucontrol
->value
.integer
.value
[1] =
2381 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2383 ucontrol
->value
.integer
.value
[0] =
2384 max
- ucontrol
->value
.integer
.value
[0];
2385 ucontrol
->value
.integer
.value
[1] =
2386 max
- ucontrol
->value
.integer
.value
[1];
2391 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r
);
2394 * snd_soc_put_volsw_2r - double mixer set callback
2395 * @kcontrol: mixer control
2396 * @ucontrol: control element information
2398 * Callback to set the value of a double mixer control that spans 2 registers.
2400 * Returns 0 for success.
2402 int snd_soc_put_volsw_2r(struct snd_kcontrol
*kcontrol
,
2403 struct snd_ctl_elem_value
*ucontrol
)
2405 struct soc_mixer_control
*mc
=
2406 (struct soc_mixer_control
*)kcontrol
->private_value
;
2407 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2408 unsigned int reg
= mc
->reg
;
2409 unsigned int reg2
= mc
->rreg
;
2410 unsigned int shift
= mc
->shift
;
2412 unsigned int mask
= (1 << fls(max
)) - 1;
2413 unsigned int invert
= mc
->invert
;
2415 unsigned int val
, val2
, val_mask
;
2417 val_mask
= mask
<< shift
;
2418 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2419 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2427 val2
= val2
<< shift
;
2429 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2433 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2436 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r
);
2439 * snd_soc_info_volsw_s8 - signed mixer info callback
2440 * @kcontrol: mixer control
2441 * @uinfo: control element information
2443 * Callback to provide information about a signed mixer control.
2445 * Returns 0 for success.
2447 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2448 struct snd_ctl_elem_info
*uinfo
)
2450 struct soc_mixer_control
*mc
=
2451 (struct soc_mixer_control
*)kcontrol
->private_value
;
2455 if (!mc
->platform_max
)
2456 mc
->platform_max
= mc
->max
;
2457 platform_max
= mc
->platform_max
;
2459 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2461 uinfo
->value
.integer
.min
= 0;
2462 uinfo
->value
.integer
.max
= platform_max
- min
;
2465 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2468 * snd_soc_get_volsw_s8 - signed mixer get callback
2469 * @kcontrol: mixer control
2470 * @ucontrol: control element information
2472 * Callback to get the value of a signed mixer control.
2474 * Returns 0 for success.
2476 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2477 struct snd_ctl_elem_value
*ucontrol
)
2479 struct soc_mixer_control
*mc
=
2480 (struct soc_mixer_control
*)kcontrol
->private_value
;
2481 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2482 unsigned int reg
= mc
->reg
;
2484 int val
= snd_soc_read(codec
, reg
);
2486 ucontrol
->value
.integer
.value
[0] =
2487 ((signed char)(val
& 0xff))-min
;
2488 ucontrol
->value
.integer
.value
[1] =
2489 ((signed char)((val
>> 8) & 0xff))-min
;
2492 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2495 * snd_soc_put_volsw_sgn - signed mixer put callback
2496 * @kcontrol: mixer control
2497 * @ucontrol: control element information
2499 * Callback to set the value of a signed mixer control.
2501 * Returns 0 for success.
2503 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2504 struct snd_ctl_elem_value
*ucontrol
)
2506 struct soc_mixer_control
*mc
=
2507 (struct soc_mixer_control
*)kcontrol
->private_value
;
2508 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2509 unsigned int reg
= mc
->reg
;
2513 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2514 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2516 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2518 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2521 * snd_soc_limit_volume - Set new limit to an existing volume control.
2523 * @codec: where to look for the control
2524 * @name: Name of the control
2525 * @max: new maximum limit
2527 * Return 0 for success, else error.
2529 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2530 const char *name
, int max
)
2532 struct snd_card
*card
= codec
->card
->snd_card
;
2533 struct snd_kcontrol
*kctl
;
2534 struct soc_mixer_control
*mc
;
2538 /* Sanity check for name and max */
2539 if (unlikely(!name
|| max
<= 0))
2542 list_for_each_entry(kctl
, &card
->controls
, list
) {
2543 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2549 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2550 if (max
<= mc
->max
) {
2551 mc
->platform_max
= max
;
2557 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2560 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2561 * mixer info callback
2562 * @kcontrol: mixer control
2563 * @uinfo: control element information
2565 * Returns 0 for success.
2567 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2568 struct snd_ctl_elem_info
*uinfo
)
2570 struct soc_mixer_control
*mc
=
2571 (struct soc_mixer_control
*)kcontrol
->private_value
;
2575 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2577 uinfo
->value
.integer
.min
= 0;
2578 uinfo
->value
.integer
.max
= max
-min
;
2582 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2585 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2586 * mixer get callback
2587 * @kcontrol: mixer control
2588 * @uinfo: control element information
2590 * Returns 0 for success.
2592 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2593 struct snd_ctl_elem_value
*ucontrol
)
2595 struct soc_mixer_control
*mc
=
2596 (struct soc_mixer_control
*)kcontrol
->private_value
;
2597 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2598 unsigned int mask
= (1<<mc
->shift
)-1;
2600 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2601 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2603 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2604 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2607 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2610 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2611 * mixer put callback
2612 * @kcontrol: mixer control
2613 * @uinfo: control element information
2615 * Returns 0 for success.
2617 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2618 struct snd_ctl_elem_value
*ucontrol
)
2620 struct soc_mixer_control
*mc
=
2621 (struct soc_mixer_control
*)kcontrol
->private_value
;
2622 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2623 unsigned int mask
= (1<<mc
->shift
)-1;
2626 unsigned int val
, valr
, oval
, ovalr
;
2628 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2630 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2633 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2634 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2638 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2642 if (ovalr
!= valr
) {
2643 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2650 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2653 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2655 * @clk_id: DAI specific clock ID
2656 * @freq: new clock frequency in Hz
2657 * @dir: new clock direction - input/output.
2659 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2661 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2662 unsigned int freq
, int dir
)
2664 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2665 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2666 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2667 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
,
2672 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2675 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2677 * @clk_id: DAI specific clock ID
2678 * @freq: new clock frequency in Hz
2679 * @dir: new clock direction - input/output.
2681 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2683 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2684 unsigned int freq
, int dir
)
2686 if (codec
->driver
->set_sysclk
)
2687 return codec
->driver
->set_sysclk(codec
, clk_id
, freq
, dir
);
2691 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2694 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2696 * @div_id: DAI specific clock divider ID
2697 * @div: new clock divisor.
2699 * Configures the clock dividers. This is used to derive the best DAI bit and
2700 * frame clocks from the system or master clock. It's best to set the DAI bit
2701 * and frame clocks as low as possible to save system power.
2703 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2704 int div_id
, int div
)
2706 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2707 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2711 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2714 * snd_soc_dai_set_pll - configure DAI PLL.
2716 * @pll_id: DAI specific PLL ID
2717 * @source: DAI specific source for the PLL
2718 * @freq_in: PLL input clock frequency in Hz
2719 * @freq_out: requested PLL output clock frequency in Hz
2721 * Configures and enables PLL to generate output clock based on input clock.
2723 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2724 unsigned int freq_in
, unsigned int freq_out
)
2726 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2727 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2729 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2730 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2735 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2738 * snd_soc_codec_set_pll - configure codec PLL.
2740 * @pll_id: DAI specific PLL ID
2741 * @source: DAI specific source for the PLL
2742 * @freq_in: PLL input clock frequency in Hz
2743 * @freq_out: requested PLL output clock frequency in Hz
2745 * Configures and enables PLL to generate output clock based on input clock.
2747 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2748 unsigned int freq_in
, unsigned int freq_out
)
2750 if (codec
->driver
->set_pll
)
2751 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2756 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2759 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2761 * @fmt: SND_SOC_DAIFMT_ format value.
2763 * Configures the DAI hardware format and clocking.
2765 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2767 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2768 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2772 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2775 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2777 * @tx_mask: bitmask representing active TX slots.
2778 * @rx_mask: bitmask representing active RX slots.
2779 * @slots: Number of slots in use.
2780 * @slot_width: Width in bits for each slot.
2782 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2785 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2786 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2788 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2789 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2794 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2797 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2799 * @tx_num: how many TX channels
2800 * @tx_slot: pointer to an array which imply the TX slot number channel
2802 * @rx_num: how many RX channels
2803 * @rx_slot: pointer to an array which imply the RX slot number channel
2806 * configure the relationship between channel number and TDM slot number.
2808 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2809 unsigned int tx_num
, unsigned int *tx_slot
,
2810 unsigned int rx_num
, unsigned int *rx_slot
)
2812 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2813 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2818 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2821 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2823 * @tristate: tristate enable
2825 * Tristates the DAI so that others can use it.
2827 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2829 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2830 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2834 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2837 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2839 * @mute: mute enable
2841 * Mutes the DAI DAC.
2843 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2845 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2846 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2850 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2853 * snd_soc_register_card - Register a card with the ASoC core
2855 * @card: Card to register
2858 int snd_soc_register_card(struct snd_soc_card
*card
)
2862 if (!card
->name
|| !card
->dev
)
2865 dev_set_drvdata(card
->dev
, card
);
2867 snd_soc_initialize_card_lists(card
);
2869 soc_init_card_debugfs(card
);
2871 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
2872 (card
->num_links
+ card
->num_aux_devs
),
2874 if (card
->rtd
== NULL
)
2876 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2878 for (i
= 0; i
< card
->num_links
; i
++)
2879 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2881 INIT_LIST_HEAD(&card
->list
);
2882 card
->instantiated
= 0;
2883 mutex_init(&card
->mutex
);
2885 mutex_lock(&client_mutex
);
2886 list_add(&card
->list
, &card_list
);
2887 snd_soc_instantiate_cards();
2888 mutex_unlock(&client_mutex
);
2890 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2894 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2897 * snd_soc_unregister_card - Unregister a card with the ASoC core
2899 * @card: Card to unregister
2902 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2904 if (card
->instantiated
)
2905 soc_cleanup_card_resources(card
);
2906 mutex_lock(&client_mutex
);
2907 list_del(&card
->list
);
2908 mutex_unlock(&client_mutex
);
2909 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2913 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2916 * Simplify DAI link configuration by removing ".-1" from device names
2917 * and sanitizing names.
2919 static char *fmt_single_name(struct device
*dev
, int *id
)
2921 char *found
, name
[NAME_SIZE
];
2924 if (dev_name(dev
) == NULL
)
2927 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2929 /* are we a "%s.%d" name (platform and SPI components) */
2930 found
= strstr(name
, dev
->driver
->name
);
2933 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2935 /* discard ID from name if ID == -1 */
2937 found
[strlen(dev
->driver
->name
)] = '\0';
2941 /* I2C component devices are named "bus-addr" */
2942 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2943 char tmp
[NAME_SIZE
];
2945 /* create unique ID number from I2C addr and bus */
2946 *id
= ((id1
& 0xffff) << 16) + id2
;
2948 /* sanitize component name for DAI link creation */
2949 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2950 strlcpy(name
, tmp
, NAME_SIZE
);
2955 return kstrdup(name
, GFP_KERNEL
);
2959 * Simplify DAI link naming for single devices with multiple DAIs by removing
2960 * any ".-1" and using the DAI name (instead of device name).
2962 static inline char *fmt_multiple_name(struct device
*dev
,
2963 struct snd_soc_dai_driver
*dai_drv
)
2965 if (dai_drv
->name
== NULL
) {
2966 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
2971 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2975 * snd_soc_register_dai - Register a DAI with the ASoC core
2977 * @dai: DAI to register
2979 int snd_soc_register_dai(struct device
*dev
,
2980 struct snd_soc_dai_driver
*dai_drv
)
2982 struct snd_soc_dai
*dai
;
2984 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
2986 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
2990 /* create DAI component name */
2991 dai
->name
= fmt_single_name(dev
, &dai
->id
);
2992 if (dai
->name
== NULL
) {
2998 dai
->driver
= dai_drv
;
2999 if (!dai
->driver
->ops
)
3000 dai
->driver
->ops
= &null_dai_ops
;
3002 mutex_lock(&client_mutex
);
3003 list_add(&dai
->list
, &dai_list
);
3004 snd_soc_instantiate_cards();
3005 mutex_unlock(&client_mutex
);
3007 pr_debug("Registered DAI '%s'\n", dai
->name
);
3011 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3014 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3016 * @dai: DAI to unregister
3018 void snd_soc_unregister_dai(struct device
*dev
)
3020 struct snd_soc_dai
*dai
;
3022 list_for_each_entry(dai
, &dai_list
, list
) {
3023 if (dev
== dai
->dev
)
3029 mutex_lock(&client_mutex
);
3030 list_del(&dai
->list
);
3031 mutex_unlock(&client_mutex
);
3033 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3037 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3040 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3042 * @dai: Array of DAIs to register
3043 * @count: Number of DAIs
3045 int snd_soc_register_dais(struct device
*dev
,
3046 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3048 struct snd_soc_dai
*dai
;
3051 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3053 for (i
= 0; i
< count
; i
++) {
3055 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3061 /* create DAI component name */
3062 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3063 if (dai
->name
== NULL
) {
3070 dai
->driver
= &dai_drv
[i
];
3071 if (dai
->driver
->id
)
3072 dai
->id
= dai
->driver
->id
;
3075 if (!dai
->driver
->ops
)
3076 dai
->driver
->ops
= &null_dai_ops
;
3078 mutex_lock(&client_mutex
);
3079 list_add(&dai
->list
, &dai_list
);
3080 mutex_unlock(&client_mutex
);
3082 pr_debug("Registered DAI '%s'\n", dai
->name
);
3085 mutex_lock(&client_mutex
);
3086 snd_soc_instantiate_cards();
3087 mutex_unlock(&client_mutex
);
3091 for (i
--; i
>= 0; i
--)
3092 snd_soc_unregister_dai(dev
);
3096 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3099 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3101 * @dai: Array of DAIs to unregister
3102 * @count: Number of DAIs
3104 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3108 for (i
= 0; i
< count
; i
++)
3109 snd_soc_unregister_dai(dev
);
3111 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3114 * snd_soc_register_platform - Register a platform with the ASoC core
3116 * @platform: platform to register
3118 int snd_soc_register_platform(struct device
*dev
,
3119 struct snd_soc_platform_driver
*platform_drv
)
3121 struct snd_soc_platform
*platform
;
3123 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3125 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3126 if (platform
== NULL
)
3129 /* create platform component name */
3130 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3131 if (platform
->name
== NULL
) {
3136 platform
->dev
= dev
;
3137 platform
->driver
= platform_drv
;
3138 platform
->dapm
.dev
= dev
;
3139 platform
->dapm
.platform
= platform
;
3141 mutex_lock(&client_mutex
);
3142 list_add(&platform
->list
, &platform_list
);
3143 snd_soc_instantiate_cards();
3144 mutex_unlock(&client_mutex
);
3146 pr_debug("Registered platform '%s'\n", platform
->name
);
3150 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3153 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3155 * @platform: platform to unregister
3157 void snd_soc_unregister_platform(struct device
*dev
)
3159 struct snd_soc_platform
*platform
;
3161 list_for_each_entry(platform
, &platform_list
, list
) {
3162 if (dev
== platform
->dev
)
3168 mutex_lock(&client_mutex
);
3169 list_del(&platform
->list
);
3170 mutex_unlock(&client_mutex
);
3172 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3173 kfree(platform
->name
);
3176 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3178 static u64 codec_format_map
[] = {
3179 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3180 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3181 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3182 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3183 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3184 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3185 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3186 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3187 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3188 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3189 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3190 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3191 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3192 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3193 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3194 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3197 /* Fix up the DAI formats for endianness: codecs don't actually see
3198 * the endianness of the data but we're using the CPU format
3199 * definitions which do need to include endianness so we ensure that
3200 * codec DAIs always have both big and little endian variants set.
3202 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3206 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3207 if (stream
->formats
& codec_format_map
[i
])
3208 stream
->formats
|= codec_format_map
[i
];
3212 * snd_soc_register_codec - Register a codec with the ASoC core
3214 * @codec: codec to register
3216 int snd_soc_register_codec(struct device
*dev
,
3217 const struct snd_soc_codec_driver
*codec_drv
,
3218 struct snd_soc_dai_driver
*dai_drv
,
3222 struct snd_soc_codec
*codec
;
3225 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3227 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3231 /* create CODEC component name */
3232 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3233 if (codec
->name
== NULL
) {
3238 if (codec_drv
->compress_type
)
3239 codec
->compress_type
= codec_drv
->compress_type
;
3241 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3243 codec
->write
= codec_drv
->write
;
3244 codec
->read
= codec_drv
->read
;
3245 codec
->volatile_register
= codec_drv
->volatile_register
;
3246 codec
->readable_register
= codec_drv
->readable_register
;
3247 codec
->writable_register
= codec_drv
->writable_register
;
3248 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3249 codec
->dapm
.dev
= dev
;
3250 codec
->dapm
.codec
= codec
;
3251 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3253 codec
->driver
= codec_drv
;
3254 codec
->num_dai
= num_dai
;
3255 mutex_init(&codec
->mutex
);
3257 /* allocate CODEC register cache */
3258 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3259 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3260 codec
->reg_size
= reg_size
;
3261 /* it is necessary to make a copy of the default register cache
3262 * because in the case of using a compression type that requires
3263 * the default register cache to be marked as __devinitconst the
3264 * kernel might have freed the array by the time we initialize
3267 if (codec_drv
->reg_cache_default
) {
3268 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3269 reg_size
, GFP_KERNEL
);
3270 if (!codec
->reg_def_copy
) {
3277 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3278 if (!codec
->volatile_register
)
3279 codec
->volatile_register
= snd_soc_default_volatile_register
;
3280 if (!codec
->readable_register
)
3281 codec
->readable_register
= snd_soc_default_readable_register
;
3282 if (!codec
->writable_register
)
3283 codec
->writable_register
= snd_soc_default_writable_register
;
3286 for (i
= 0; i
< num_dai
; i
++) {
3287 fixup_codec_formats(&dai_drv
[i
].playback
);
3288 fixup_codec_formats(&dai_drv
[i
].capture
);
3291 /* register any DAIs */
3293 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3298 mutex_lock(&client_mutex
);
3299 list_add(&codec
->list
, &codec_list
);
3300 snd_soc_instantiate_cards();
3301 mutex_unlock(&client_mutex
);
3303 pr_debug("Registered codec '%s'\n", codec
->name
);
3307 kfree(codec
->reg_def_copy
);
3308 codec
->reg_def_copy
= NULL
;
3313 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3316 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3318 * @codec: codec to unregister
3320 void snd_soc_unregister_codec(struct device
*dev
)
3322 struct snd_soc_codec
*codec
;
3325 list_for_each_entry(codec
, &codec_list
, list
) {
3326 if (dev
== codec
->dev
)
3333 for (i
= 0; i
< codec
->num_dai
; i
++)
3334 snd_soc_unregister_dai(dev
);
3336 mutex_lock(&client_mutex
);
3337 list_del(&codec
->list
);
3338 mutex_unlock(&client_mutex
);
3340 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3342 snd_soc_cache_exit(codec
);
3343 kfree(codec
->reg_def_copy
);
3347 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3349 static int __init
snd_soc_init(void)
3351 #ifdef CONFIG_DEBUG_FS
3352 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3353 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3355 "ASoC: Failed to create debugfs directory\n");
3356 snd_soc_debugfs_root
= NULL
;
3359 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3361 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3363 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3365 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3367 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3368 &platform_list_fops
))
3369 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3372 snd_soc_util_init();
3374 return platform_driver_register(&soc_driver
);
3376 module_init(snd_soc_init
);
3378 static void __exit
snd_soc_exit(void)
3380 snd_soc_util_exit();
3382 #ifdef CONFIG_DEBUG_FS
3383 debugfs_remove_recursive(snd_soc_debugfs_root
);
3385 platform_driver_unregister(&soc_driver
);
3387 module_exit(snd_soc_exit
);
3389 /* Module information */
3390 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3391 MODULE_DESCRIPTION("ALSA SoC Core");
3392 MODULE_LICENSE("GPL");
3393 MODULE_ALIAS("platform:soc-audio");