2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/initval.h>
44 #define CREATE_TRACE_POINTS
45 #include <trace/events/asoc.h>
49 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq
);
51 #ifdef CONFIG_DEBUG_FS
52 struct dentry
*snd_soc_debugfs_root
;
53 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root
);
56 static DEFINE_MUTEX(client_mutex
);
57 static LIST_HEAD(card_list
);
58 static LIST_HEAD(dai_list
);
59 static LIST_HEAD(platform_list
);
60 static LIST_HEAD(codec_list
);
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
= dev_get_drvdata(dev
);
174 return soc_codec_reg_show(rtd
->codec
, buf
, PAGE_SIZE
, 0);
177 static DEVICE_ATTR(codec_reg
, 0444, codec_reg_show
, NULL
);
179 static ssize_t
pmdown_time_show(struct device
*dev
,
180 struct device_attribute
*attr
, char *buf
)
182 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
184 return sprintf(buf
, "%ld\n", rtd
->pmdown_time
);
187 static ssize_t
pmdown_time_set(struct device
*dev
,
188 struct device_attribute
*attr
,
189 const char *buf
, size_t count
)
191 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
194 ret
= strict_strtol(buf
, 10, &rtd
->pmdown_time
);
201 static DEVICE_ATTR(pmdown_time
, 0644, pmdown_time_show
, pmdown_time_set
);
203 #ifdef CONFIG_DEBUG_FS
204 static int codec_reg_open_file(struct inode
*inode
, struct file
*file
)
206 file
->private_data
= inode
->i_private
;
210 static ssize_t
codec_reg_read_file(struct file
*file
, char __user
*user_buf
,
211 size_t count
, loff_t
*ppos
)
214 struct snd_soc_codec
*codec
= file
->private_data
;
217 if (*ppos
< 0 || !count
)
220 buf
= kmalloc(count
, GFP_KERNEL
);
224 ret
= soc_codec_reg_show(codec
, buf
, count
, *ppos
);
226 if (copy_to_user(user_buf
, buf
, ret
)) {
237 static ssize_t
codec_reg_write_file(struct file
*file
,
238 const char __user
*user_buf
, size_t count
, loff_t
*ppos
)
243 unsigned long reg
, value
;
244 struct snd_soc_codec
*codec
= file
->private_data
;
246 buf_size
= min(count
, (sizeof(buf
)-1));
247 if (copy_from_user(buf
, user_buf
, buf_size
))
251 while (*start
== ' ')
253 reg
= simple_strtoul(start
, &start
, 16);
254 while (*start
== ' ')
256 if (strict_strtoul(start
, 16, &value
))
259 /* Userspace has been fiddling around behind the kernel's back */
260 add_taint(TAINT_USER
);
262 snd_soc_write(codec
, reg
, value
);
266 static const struct file_operations codec_reg_fops
= {
267 .open
= codec_reg_open_file
,
268 .read
= codec_reg_read_file
,
269 .write
= codec_reg_write_file
,
270 .llseek
= default_llseek
,
273 static void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
275 struct dentry
*debugfs_card_root
= codec
->card
->debugfs_card_root
;
277 codec
->debugfs_codec_root
= debugfs_create_dir(codec
->name
,
279 if (!codec
->debugfs_codec_root
) {
281 "ASoC: Failed to create codec debugfs directory\n");
285 debugfs_create_bool("cache_sync", 0444, codec
->debugfs_codec_root
,
287 debugfs_create_bool("cache_only", 0444, codec
->debugfs_codec_root
,
290 codec
->debugfs_reg
= debugfs_create_file("codec_reg", 0644,
291 codec
->debugfs_codec_root
,
292 codec
, &codec_reg_fops
);
293 if (!codec
->debugfs_reg
)
295 "ASoC: Failed to create codec register debugfs file\n");
297 snd_soc_dapm_debugfs_init(&codec
->dapm
, codec
->debugfs_codec_root
);
300 static void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
302 debugfs_remove_recursive(codec
->debugfs_codec_root
);
305 static ssize_t
codec_list_read_file(struct file
*file
, char __user
*user_buf
,
306 size_t count
, loff_t
*ppos
)
308 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
309 ssize_t len
, ret
= 0;
310 struct snd_soc_codec
*codec
;
315 list_for_each_entry(codec
, &codec_list
, list
) {
316 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
320 if (ret
> PAGE_SIZE
) {
327 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
334 static const struct file_operations codec_list_fops
= {
335 .read
= codec_list_read_file
,
336 .llseek
= default_llseek
,/* read accesses f_pos */
339 static ssize_t
dai_list_read_file(struct file
*file
, char __user
*user_buf
,
340 size_t count
, loff_t
*ppos
)
342 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
343 ssize_t len
, ret
= 0;
344 struct snd_soc_dai
*dai
;
349 list_for_each_entry(dai
, &dai_list
, list
) {
350 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n", dai
->name
);
353 if (ret
> PAGE_SIZE
) {
359 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
366 static const struct file_operations dai_list_fops
= {
367 .read
= dai_list_read_file
,
368 .llseek
= default_llseek
,/* read accesses f_pos */
371 static ssize_t
platform_list_read_file(struct file
*file
,
372 char __user
*user_buf
,
373 size_t count
, loff_t
*ppos
)
375 char *buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
376 ssize_t len
, ret
= 0;
377 struct snd_soc_platform
*platform
;
382 list_for_each_entry(platform
, &platform_list
, list
) {
383 len
= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "%s\n",
387 if (ret
> PAGE_SIZE
) {
393 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
400 static const struct file_operations platform_list_fops
= {
401 .read
= platform_list_read_file
,
402 .llseek
= default_llseek
,/* read accesses f_pos */
405 static void soc_init_card_debugfs(struct snd_soc_card
*card
)
407 card
->debugfs_card_root
= debugfs_create_dir(card
->name
,
408 snd_soc_debugfs_root
);
409 if (!card
->debugfs_card_root
) {
411 "ASoC: Failed to create card debugfs directory\n");
415 card
->debugfs_pop_time
= debugfs_create_u32("dapm_pop_time", 0644,
416 card
->debugfs_card_root
,
418 if (!card
->debugfs_pop_time
)
420 "Failed to create pop time debugfs file\n");
423 static void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
425 debugfs_remove_recursive(card
->debugfs_card_root
);
430 static inline void soc_init_codec_debugfs(struct snd_soc_codec
*codec
)
434 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec
*codec
)
438 static inline void soc_init_card_debugfs(struct snd_soc_card
*card
)
442 static inline void soc_cleanup_card_debugfs(struct snd_soc_card
*card
)
447 #ifdef CONFIG_SND_SOC_AC97_BUS
448 /* unregister ac97 codec */
449 static int soc_ac97_dev_unregister(struct snd_soc_codec
*codec
)
451 if (codec
->ac97
->dev
.bus
)
452 device_unregister(&codec
->ac97
->dev
);
456 /* stop no dev release warning */
457 static void soc_ac97_device_release(struct device
*dev
){}
459 /* register ac97 codec to bus */
460 static int soc_ac97_dev_register(struct snd_soc_codec
*codec
)
464 codec
->ac97
->dev
.bus
= &ac97_bus_type
;
465 codec
->ac97
->dev
.parent
= codec
->card
->dev
;
466 codec
->ac97
->dev
.release
= soc_ac97_device_release
;
468 dev_set_name(&codec
->ac97
->dev
, "%d-%d:%s",
469 codec
->card
->snd_card
->number
, 0, codec
->name
);
470 err
= device_register(&codec
->ac97
->dev
);
472 snd_printk(KERN_ERR
"Can't register ac97 bus\n");
473 codec
->ac97
->dev
.bus
= NULL
;
480 #ifdef CONFIG_PM_SLEEP
481 /* powers down audio subsystem for suspend */
482 int snd_soc_suspend(struct device
*dev
)
484 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
485 struct snd_soc_codec
*codec
;
488 /* If the initialization of this soc device failed, there is no codec
489 * associated with it. Just bail out in this case.
491 if (list_empty(&card
->codec_dev_list
))
494 /* Due to the resume being scheduled into a workqueue we could
495 * suspend before that's finished - wait for it to complete.
497 snd_power_lock(card
->snd_card
);
498 snd_power_wait(card
->snd_card
, SNDRV_CTL_POWER_D0
);
499 snd_power_unlock(card
->snd_card
);
501 /* we're going to block userspace touching us until resume completes */
502 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D3hot
);
504 /* mute any active DACs */
505 for (i
= 0; i
< card
->num_rtd
; i
++) {
506 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
507 struct snd_soc_dai_driver
*drv
= dai
->driver
;
509 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
512 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
513 drv
->ops
->digital_mute(dai
, 1);
516 /* suspend all pcms */
517 for (i
= 0; i
< card
->num_rtd
; i
++) {
518 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
521 snd_pcm_suspend_all(card
->rtd
[i
].pcm
);
524 if (card
->suspend_pre
)
525 card
->suspend_pre(card
);
527 for (i
= 0; i
< card
->num_rtd
; i
++) {
528 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
529 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
531 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
534 if (cpu_dai
->driver
->suspend
&& !cpu_dai
->driver
->ac97_control
)
535 cpu_dai
->driver
->suspend(cpu_dai
);
536 if (platform
->driver
->suspend
&& !platform
->suspended
) {
537 platform
->driver
->suspend(cpu_dai
);
538 platform
->suspended
= 1;
542 /* close any waiting streams and save state */
543 for (i
= 0; i
< card
->num_rtd
; i
++) {
544 flush_delayed_work_sync(&card
->rtd
[i
].delayed_work
);
545 card
->rtd
[i
].codec
->dapm
.suspend_bias_level
= card
->rtd
[i
].codec
->dapm
.bias_level
;
548 for (i
= 0; i
< card
->num_rtd
; i
++) {
549 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
551 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
554 if (driver
->playback
.stream_name
!= NULL
)
555 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
556 SND_SOC_DAPM_STREAM_SUSPEND
);
558 if (driver
->capture
.stream_name
!= NULL
)
559 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
560 SND_SOC_DAPM_STREAM_SUSPEND
);
563 /* suspend all CODECs */
564 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
565 /* If there are paths active then the CODEC will be held with
566 * bias _ON and should not be suspended. */
567 if (!codec
->suspended
&& codec
->driver
->suspend
) {
568 switch (codec
->dapm
.bias_level
) {
569 case SND_SOC_BIAS_STANDBY
:
570 case SND_SOC_BIAS_OFF
:
571 codec
->driver
->suspend(codec
);
572 codec
->suspended
= 1;
573 codec
->cache_sync
= 1;
576 dev_dbg(codec
->dev
, "CODEC is on over suspend\n");
582 for (i
= 0; i
< card
->num_rtd
; i
++) {
583 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
585 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
588 if (cpu_dai
->driver
->suspend
&& cpu_dai
->driver
->ac97_control
)
589 cpu_dai
->driver
->suspend(cpu_dai
);
592 if (card
->suspend_post
)
593 card
->suspend_post(card
);
597 EXPORT_SYMBOL_GPL(snd_soc_suspend
);
599 /* deferred resume work, so resume can complete before we finished
600 * setting our codec back up, which can be very slow on I2C
602 static void soc_resume_deferred(struct work_struct
*work
)
604 struct snd_soc_card
*card
=
605 container_of(work
, struct snd_soc_card
, deferred_resume_work
);
606 struct snd_soc_codec
*codec
;
609 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
610 * so userspace apps are blocked from touching us
613 dev_dbg(card
->dev
, "starting resume work\n");
615 /* Bring us up into D2 so that DAPM starts enabling things */
616 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D2
);
618 if (card
->resume_pre
)
619 card
->resume_pre(card
);
621 /* resume AC97 DAIs */
622 for (i
= 0; i
< card
->num_rtd
; i
++) {
623 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
625 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
628 if (cpu_dai
->driver
->resume
&& cpu_dai
->driver
->ac97_control
)
629 cpu_dai
->driver
->resume(cpu_dai
);
632 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
633 /* If the CODEC was idle over suspend then it will have been
634 * left with bias OFF or STANDBY and suspended so we must now
635 * resume. Otherwise the suspend was suppressed.
637 if (codec
->driver
->resume
&& codec
->suspended
) {
638 switch (codec
->dapm
.bias_level
) {
639 case SND_SOC_BIAS_STANDBY
:
640 case SND_SOC_BIAS_OFF
:
641 codec
->driver
->resume(codec
);
642 codec
->suspended
= 0;
645 dev_dbg(codec
->dev
, "CODEC was on over suspend\n");
651 for (i
= 0; i
< card
->num_rtd
; i
++) {
652 struct snd_soc_dai_driver
*driver
= card
->rtd
[i
].codec_dai
->driver
;
654 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
657 if (driver
->playback
.stream_name
!= NULL
)
658 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->playback
.stream_name
,
659 SND_SOC_DAPM_STREAM_RESUME
);
661 if (driver
->capture
.stream_name
!= NULL
)
662 snd_soc_dapm_stream_event(&card
->rtd
[i
], driver
->capture
.stream_name
,
663 SND_SOC_DAPM_STREAM_RESUME
);
666 /* unmute any active DACs */
667 for (i
= 0; i
< card
->num_rtd
; i
++) {
668 struct snd_soc_dai
*dai
= card
->rtd
[i
].codec_dai
;
669 struct snd_soc_dai_driver
*drv
= dai
->driver
;
671 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
674 if (drv
->ops
->digital_mute
&& dai
->playback_active
)
675 drv
->ops
->digital_mute(dai
, 0);
678 for (i
= 0; i
< card
->num_rtd
; i
++) {
679 struct snd_soc_dai
*cpu_dai
= card
->rtd
[i
].cpu_dai
;
680 struct snd_soc_platform
*platform
= card
->rtd
[i
].platform
;
682 if (card
->rtd
[i
].dai_link
->ignore_suspend
)
685 if (cpu_dai
->driver
->resume
&& !cpu_dai
->driver
->ac97_control
)
686 cpu_dai
->driver
->resume(cpu_dai
);
687 if (platform
->driver
->resume
&& platform
->suspended
) {
688 platform
->driver
->resume(cpu_dai
);
689 platform
->suspended
= 0;
693 if (card
->resume_post
)
694 card
->resume_post(card
);
696 dev_dbg(card
->dev
, "resume work completed\n");
698 /* userspace can access us now we are back as we were before */
699 snd_power_change_state(card
->snd_card
, SNDRV_CTL_POWER_D0
);
702 /* powers up audio subsystem after a suspend */
703 int snd_soc_resume(struct device
*dev
)
705 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
706 int i
, ac97_control
= 0;
708 /* If the initialization of this soc device failed, there is no codec
709 * associated with it. Just bail out in this case.
711 if (list_empty(&card
->codec_dev_list
))
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 const 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 (dai_link
->cpu_dai_of_node
) {
763 if (cpu_dai
->dev
->of_node
!= dai_link
->cpu_dai_of_node
)
766 if (strcmp(cpu_dai
->name
, dai_link
->cpu_dai_name
))
770 rtd
->cpu_dai
= cpu_dai
;
773 dev_dbg(card
->dev
, "CPU DAI %s not registered\n",
774 dai_link
->cpu_dai_name
);
777 /* do we already have the CODEC for this link ? */
782 /* no, then find CODEC from registered CODECs*/
783 list_for_each_entry(codec
, &codec_list
, list
) {
784 if (dai_link
->codec_of_node
) {
785 if (codec
->dev
->of_node
!= dai_link
->codec_of_node
)
788 if (strcmp(codec
->name
, dai_link
->codec_name
))
795 * CODEC found, so find CODEC DAI from registered DAIs from
798 list_for_each_entry(codec_dai
, &dai_list
, list
) {
799 if (codec
->dev
== codec_dai
->dev
&&
800 !strcmp(codec_dai
->name
,
801 dai_link
->codec_dai_name
)) {
803 rtd
->codec_dai
= codec_dai
;
807 dev_dbg(card
->dev
, "CODEC DAI %s not registered\n",
808 dai_link
->codec_dai_name
);
812 dev_dbg(card
->dev
, "CODEC %s not registered\n",
813 dai_link
->codec_name
);
816 /* do we need a platform? */
820 /* if there's no platform we match on the empty platform */
821 platform_name
= dai_link
->platform_name
;
822 if (!platform_name
&& !dai_link
->platform_of_node
)
823 platform_name
= "snd-soc-dummy";
825 /* no, then find one from the set of registered platforms */
826 list_for_each_entry(platform
, &platform_list
, list
) {
827 if (dai_link
->platform_of_node
) {
828 if (platform
->dev
->of_node
!=
829 dai_link
->platform_of_node
)
832 if (strcmp(platform
->name
, platform_name
))
836 rtd
->platform
= platform
;
840 dev_dbg(card
->dev
, "platform %s not registered\n",
841 dai_link
->platform_name
);
845 /* mark rtd as complete if we found all 4 of our client devices */
846 if (rtd
->codec
&& rtd
->codec_dai
&& rtd
->platform
&& rtd
->cpu_dai
) {
853 static void soc_remove_codec(struct snd_soc_codec
*codec
)
857 if (codec
->driver
->remove
) {
858 err
= codec
->driver
->remove(codec
);
861 "asoc: failed to remove %s: %d\n",
865 /* Make sure all DAPM widgets are freed */
866 snd_soc_dapm_free(&codec
->dapm
);
868 soc_cleanup_codec_debugfs(codec
);
870 list_del(&codec
->card_list
);
871 module_put(codec
->dev
->driver
->owner
);
874 static void soc_remove_dai_link(struct snd_soc_card
*card
, int num
, int order
)
876 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
877 struct snd_soc_codec
*codec
= rtd
->codec
;
878 struct snd_soc_platform
*platform
= rtd
->platform
;
879 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
882 /* unregister the rtd device */
883 if (rtd
->dev_registered
) {
884 device_remove_file(rtd
->dev
, &dev_attr_pmdown_time
);
885 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
886 device_unregister(rtd
->dev
);
887 rtd
->dev_registered
= 0;
890 /* remove the CODEC DAI */
891 if (codec_dai
&& codec_dai
->probed
&&
892 codec_dai
->driver
->remove_order
== order
) {
893 if (codec_dai
->driver
->remove
) {
894 err
= codec_dai
->driver
->remove(codec_dai
);
896 printk(KERN_ERR
"asoc: failed to remove %s\n", codec_dai
->name
);
898 codec_dai
->probed
= 0;
899 list_del(&codec_dai
->card_list
);
902 /* remove the platform */
903 if (platform
&& platform
->probed
&&
904 platform
->driver
->remove_order
== order
) {
905 if (platform
->driver
->remove
) {
906 err
= platform
->driver
->remove(platform
);
908 printk(KERN_ERR
"asoc: failed to remove %s\n", platform
->name
);
910 platform
->probed
= 0;
911 list_del(&platform
->card_list
);
912 module_put(platform
->dev
->driver
->owner
);
915 /* remove the CODEC */
916 if (codec
&& codec
->probed
&&
917 codec
->driver
->remove_order
== order
)
918 soc_remove_codec(codec
);
920 /* remove the cpu_dai */
921 if (cpu_dai
&& cpu_dai
->probed
&&
922 cpu_dai
->driver
->remove_order
== order
) {
923 if (cpu_dai
->driver
->remove
) {
924 err
= cpu_dai
->driver
->remove(cpu_dai
);
926 printk(KERN_ERR
"asoc: failed to remove %s\n", cpu_dai
->name
);
929 list_del(&cpu_dai
->card_list
);
930 module_put(cpu_dai
->dev
->driver
->owner
);
934 static void soc_remove_dai_links(struct snd_soc_card
*card
)
938 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
940 for (dai
= 0; dai
< card
->num_rtd
; dai
++)
941 soc_remove_dai_link(card
, dai
, order
);
946 static void soc_set_name_prefix(struct snd_soc_card
*card
,
947 struct snd_soc_codec
*codec
)
951 if (card
->codec_conf
== NULL
)
954 for (i
= 0; i
< card
->num_configs
; i
++) {
955 struct snd_soc_codec_conf
*map
= &card
->codec_conf
[i
];
956 if (map
->dev_name
&& !strcmp(codec
->name
, map
->dev_name
)) {
957 codec
->name_prefix
= map
->name_prefix
;
963 static int soc_probe_codec(struct snd_soc_card
*card
,
964 struct snd_soc_codec
*codec
)
967 const struct snd_soc_codec_driver
*driver
= codec
->driver
;
970 codec
->dapm
.card
= card
;
971 soc_set_name_prefix(card
, codec
);
973 if (!try_module_get(codec
->dev
->driver
->owner
))
976 soc_init_codec_debugfs(codec
);
978 if (driver
->dapm_widgets
)
979 snd_soc_dapm_new_controls(&codec
->dapm
, driver
->dapm_widgets
,
980 driver
->num_dapm_widgets
);
982 codec
->dapm
.idle_bias_off
= driver
->idle_bias_off
;
985 ret
= driver
->probe(codec
);
988 "asoc: failed to probe CODEC %s: %d\n",
994 if (driver
->controls
)
995 snd_soc_add_controls(codec
, driver
->controls
,
996 driver
->num_controls
);
997 if (driver
->dapm_routes
)
998 snd_soc_dapm_add_routes(&codec
->dapm
, driver
->dapm_routes
,
999 driver
->num_dapm_routes
);
1001 /* mark codec as probed and add to card codec list */
1003 list_add(&codec
->card_list
, &card
->codec_dev_list
);
1004 list_add(&codec
->dapm
.list
, &card
->dapm_list
);
1009 soc_cleanup_codec_debugfs(codec
);
1010 module_put(codec
->dev
->driver
->owner
);
1015 static int soc_probe_platform(struct snd_soc_card
*card
,
1016 struct snd_soc_platform
*platform
)
1019 const struct snd_soc_platform_driver
*driver
= platform
->driver
;
1021 platform
->card
= card
;
1022 platform
->dapm
.card
= card
;
1024 if (!try_module_get(platform
->dev
->driver
->owner
))
1027 if (driver
->dapm_widgets
)
1028 snd_soc_dapm_new_controls(&platform
->dapm
,
1029 driver
->dapm_widgets
, driver
->num_dapm_widgets
);
1031 if (driver
->probe
) {
1032 ret
= driver
->probe(platform
);
1034 dev_err(platform
->dev
,
1035 "asoc: failed to probe platform %s: %d\n",
1036 platform
->name
, ret
);
1041 if (driver
->controls
)
1042 snd_soc_add_platform_controls(platform
, driver
->controls
,
1043 driver
->num_controls
);
1044 if (driver
->dapm_routes
)
1045 snd_soc_dapm_add_routes(&platform
->dapm
, driver
->dapm_routes
,
1046 driver
->num_dapm_routes
);
1048 /* mark platform as probed and add to card platform list */
1049 platform
->probed
= 1;
1050 list_add(&platform
->card_list
, &card
->platform_dev_list
);
1051 list_add(&platform
->dapm
.list
, &card
->dapm_list
);
1056 module_put(platform
->dev
->driver
->owner
);
1061 static void rtd_release(struct device
*dev
)
1066 static int soc_post_component_init(struct snd_soc_card
*card
,
1067 struct snd_soc_codec
*codec
,
1068 int num
, int dailess
)
1070 struct snd_soc_dai_link
*dai_link
= NULL
;
1071 struct snd_soc_aux_dev
*aux_dev
= NULL
;
1072 struct snd_soc_pcm_runtime
*rtd
;
1073 const char *temp
, *name
;
1077 dai_link
= &card
->dai_link
[num
];
1078 rtd
= &card
->rtd
[num
];
1079 name
= dai_link
->name
;
1081 aux_dev
= &card
->aux_dev
[num
];
1082 rtd
= &card
->rtd_aux
[num
];
1083 name
= aux_dev
->name
;
1087 /* Make sure all DAPM widgets are instantiated */
1088 snd_soc_dapm_new_widgets(&codec
->dapm
);
1090 /* machine controls, routes and widgets are not prefixed */
1091 temp
= codec
->name_prefix
;
1092 codec
->name_prefix
= NULL
;
1094 /* do machine specific initialization */
1095 if (!dailess
&& dai_link
->init
)
1096 ret
= dai_link
->init(rtd
);
1097 else if (dailess
&& aux_dev
->init
)
1098 ret
= aux_dev
->init(&codec
->dapm
);
1100 dev_err(card
->dev
, "asoc: failed to init %s: %d\n", name
, ret
);
1103 codec
->name_prefix
= temp
;
1105 /* register the rtd device */
1108 rtd
->dev
= kzalloc(sizeof(struct device
), GFP_KERNEL
);
1111 device_initialize(rtd
->dev
);
1112 rtd
->dev
->parent
= card
->dev
;
1113 rtd
->dev
->release
= rtd_release
;
1114 rtd
->dev
->init_name
= name
;
1115 dev_set_drvdata(rtd
->dev
, rtd
);
1116 mutex_init(&rtd
->pcm_mutex
);
1117 ret
= device_add(rtd
->dev
);
1120 "asoc: failed to register runtime device: %d\n", ret
);
1123 rtd
->dev_registered
= 1;
1125 /* add DAPM sysfs entries for this codec */
1126 ret
= snd_soc_dapm_sys_add(rtd
->dev
);
1129 "asoc: failed to add codec dapm sysfs entries: %d\n",
1132 /* add codec sysfs entries */
1133 ret
= device_create_file(rtd
->dev
, &dev_attr_codec_reg
);
1136 "asoc: failed to add codec sysfs files: %d\n", ret
);
1141 static int soc_probe_dai_link(struct snd_soc_card
*card
, int num
, int order
)
1143 struct snd_soc_dai_link
*dai_link
= &card
->dai_link
[num
];
1144 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[num
];
1145 struct snd_soc_codec
*codec
= rtd
->codec
;
1146 struct snd_soc_platform
*platform
= rtd
->platform
;
1147 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
, *cpu_dai
= rtd
->cpu_dai
;
1150 dev_dbg(card
->dev
, "probe %s dai link %d late %d\n",
1151 card
->name
, num
, order
);
1153 /* config components */
1154 codec_dai
->codec
= codec
;
1155 cpu_dai
->platform
= platform
;
1156 codec_dai
->card
= card
;
1157 cpu_dai
->card
= card
;
1159 /* set default power off timeout */
1160 rtd
->pmdown_time
= pmdown_time
;
1162 /* probe the cpu_dai */
1163 if (!cpu_dai
->probed
&&
1164 cpu_dai
->driver
->probe_order
== order
) {
1165 if (!try_module_get(cpu_dai
->dev
->driver
->owner
))
1168 if (cpu_dai
->driver
->probe
) {
1169 ret
= cpu_dai
->driver
->probe(cpu_dai
);
1171 printk(KERN_ERR
"asoc: failed to probe CPU DAI %s\n",
1173 module_put(cpu_dai
->dev
->driver
->owner
);
1177 cpu_dai
->probed
= 1;
1178 /* mark cpu_dai as probed and add to card dai list */
1179 list_add(&cpu_dai
->card_list
, &card
->dai_dev_list
);
1182 /* probe the CODEC */
1183 if (!codec
->probed
&&
1184 codec
->driver
->probe_order
== order
) {
1185 ret
= soc_probe_codec(card
, codec
);
1190 /* probe the platform */
1191 if (!platform
->probed
&&
1192 platform
->driver
->probe_order
== order
) {
1193 ret
= soc_probe_platform(card
, platform
);
1198 /* probe the CODEC DAI */
1199 if (!codec_dai
->probed
&& codec_dai
->driver
->probe_order
== order
) {
1200 if (codec_dai
->driver
->probe
) {
1201 ret
= codec_dai
->driver
->probe(codec_dai
);
1203 printk(KERN_ERR
"asoc: failed to probe CODEC DAI %s\n",
1209 /* mark codec_dai as probed and add to card dai list */
1210 codec_dai
->probed
= 1;
1211 list_add(&codec_dai
->card_list
, &card
->dai_dev_list
);
1214 /* complete DAI probe during last probe */
1215 if (order
!= SND_SOC_COMP_ORDER_LAST
)
1218 ret
= soc_post_component_init(card
, codec
, num
, 0);
1222 ret
= device_create_file(rtd
->dev
, &dev_attr_pmdown_time
);
1224 printk(KERN_WARNING
"asoc: failed to add pmdown_time sysfs\n");
1226 /* create the pcm */
1227 ret
= soc_new_pcm(rtd
, num
);
1229 printk(KERN_ERR
"asoc: can't create pcm %s\n", dai_link
->stream_name
);
1233 /* add platform data for AC97 devices */
1234 if (rtd
->codec_dai
->driver
->ac97_control
)
1235 snd_ac97_dev_add_pdata(codec
->ac97
, rtd
->cpu_dai
->ac97_pdata
);
1240 #ifdef CONFIG_SND_SOC_AC97_BUS
1241 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime
*rtd
)
1245 /* Only instantiate AC97 if not already done by the adaptor
1246 * for the generic AC97 subsystem.
1248 if (rtd
->codec_dai
->driver
->ac97_control
&& !rtd
->codec
->ac97_registered
) {
1250 * It is possible that the AC97 device is already registered to
1251 * the device subsystem. This happens when the device is created
1252 * via snd_ac97_mixer(). Currently only SoC codec that does so
1253 * is the generic AC97 glue but others migh emerge.
1255 * In those cases we don't try to register the device again.
1257 if (!rtd
->codec
->ac97_created
)
1260 ret
= soc_ac97_dev_register(rtd
->codec
);
1262 printk(KERN_ERR
"asoc: AC97 device register failed\n");
1266 rtd
->codec
->ac97_registered
= 1;
1271 static void soc_unregister_ac97_dai_link(struct snd_soc_codec
*codec
)
1273 if (codec
->ac97_registered
) {
1274 soc_ac97_dev_unregister(codec
);
1275 codec
->ac97_registered
= 0;
1280 static int soc_probe_aux_dev(struct snd_soc_card
*card
, int num
)
1282 struct snd_soc_aux_dev
*aux_dev
= &card
->aux_dev
[num
];
1283 struct snd_soc_codec
*codec
;
1286 /* find CODEC from registered CODECs*/
1287 list_for_each_entry(codec
, &codec_list
, list
) {
1288 if (!strcmp(codec
->name
, aux_dev
->codec_name
)) {
1289 if (codec
->probed
) {
1291 "asoc: codec already probed");
1298 /* codec not found */
1299 dev_err(card
->dev
, "asoc: codec %s not found", aux_dev
->codec_name
);
1303 ret
= soc_probe_codec(card
, codec
);
1307 ret
= soc_post_component_init(card
, codec
, num
, 1);
1313 static void soc_remove_aux_dev(struct snd_soc_card
*card
, int num
)
1315 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd_aux
[num
];
1316 struct snd_soc_codec
*codec
= rtd
->codec
;
1318 /* unregister the rtd device */
1319 if (rtd
->dev_registered
) {
1320 device_remove_file(rtd
->dev
, &dev_attr_codec_reg
);
1321 device_del(rtd
->dev
);
1322 rtd
->dev_registered
= 0;
1325 if (codec
&& codec
->probed
)
1326 soc_remove_codec(codec
);
1329 static int snd_soc_init_codec_cache(struct snd_soc_codec
*codec
,
1330 enum snd_soc_compress_type compress_type
)
1334 if (codec
->cache_init
)
1337 /* override the compress_type if necessary */
1338 if (compress_type
&& codec
->compress_type
!= compress_type
)
1339 codec
->compress_type
= compress_type
;
1340 ret
= snd_soc_cache_init(codec
);
1342 dev_err(codec
->dev
, "Failed to set cache compression type: %d\n",
1346 codec
->cache_init
= 1;
1350 static void snd_soc_instantiate_card(struct snd_soc_card
*card
)
1352 struct snd_soc_codec
*codec
;
1353 struct snd_soc_codec_conf
*codec_conf
;
1354 enum snd_soc_compress_type compress_type
;
1355 struct snd_soc_dai_link
*dai_link
;
1358 mutex_lock(&card
->mutex
);
1360 if (card
->instantiated
) {
1361 mutex_unlock(&card
->mutex
);
1366 for (i
= 0; i
< card
->num_links
; i
++)
1367 soc_bind_dai_link(card
, i
);
1369 /* bind completed ? */
1370 if (card
->num_rtd
!= card
->num_links
) {
1371 mutex_unlock(&card
->mutex
);
1375 /* initialize the register cache for each available codec */
1376 list_for_each_entry(codec
, &codec_list
, list
) {
1377 if (codec
->cache_init
)
1379 /* by default we don't override the compress_type */
1381 /* check to see if we need to override the compress_type */
1382 for (i
= 0; i
< card
->num_configs
; ++i
) {
1383 codec_conf
= &card
->codec_conf
[i
];
1384 if (!strcmp(codec
->name
, codec_conf
->dev_name
)) {
1385 compress_type
= codec_conf
->compress_type
;
1386 if (compress_type
&& compress_type
1387 != codec
->compress_type
)
1391 ret
= snd_soc_init_codec_cache(codec
, compress_type
);
1393 mutex_unlock(&card
->mutex
);
1398 /* card bind complete so register a sound card */
1399 ret
= snd_card_create(SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
,
1400 card
->owner
, 0, &card
->snd_card
);
1402 printk(KERN_ERR
"asoc: can't create sound card for card %s\n",
1404 mutex_unlock(&card
->mutex
);
1407 card
->snd_card
->dev
= card
->dev
;
1409 card
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
1410 card
->dapm
.dev
= card
->dev
;
1411 card
->dapm
.card
= card
;
1412 list_add(&card
->dapm
.list
, &card
->dapm_list
);
1414 #ifdef CONFIG_DEBUG_FS
1415 snd_soc_dapm_debugfs_init(&card
->dapm
, card
->debugfs_card_root
);
1418 #ifdef CONFIG_PM_SLEEP
1419 /* deferred resume work */
1420 INIT_WORK(&card
->deferred_resume_work
, soc_resume_deferred
);
1423 if (card
->dapm_widgets
)
1424 snd_soc_dapm_new_controls(&card
->dapm
, card
->dapm_widgets
,
1425 card
->num_dapm_widgets
);
1427 /* initialise the sound card only once */
1429 ret
= card
->probe(card
);
1431 goto card_probe_error
;
1434 /* early DAI link probe */
1435 for (order
= SND_SOC_COMP_ORDER_FIRST
; order
<= SND_SOC_COMP_ORDER_LAST
;
1437 for (i
= 0; i
< card
->num_links
; i
++) {
1438 ret
= soc_probe_dai_link(card
, i
, order
);
1440 pr_err("asoc: failed to instantiate card %s: %d\n",
1447 for (i
= 0; i
< card
->num_aux_devs
; i
++) {
1448 ret
= soc_probe_aux_dev(card
, i
);
1450 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1452 goto probe_aux_dev_err
;
1456 /* We should have a non-codec control add function but we don't */
1458 snd_soc_add_controls(list_first_entry(&card
->codec_dev_list
,
1459 struct snd_soc_codec
,
1462 card
->num_controls
);
1464 if (card
->dapm_routes
)
1465 snd_soc_dapm_add_routes(&card
->dapm
, card
->dapm_routes
,
1466 card
->num_dapm_routes
);
1468 snd_soc_dapm_new_widgets(&card
->dapm
);
1470 for (i
= 0; i
< card
->num_links
; i
++) {
1471 dai_link
= &card
->dai_link
[i
];
1473 if (dai_link
->dai_fmt
) {
1474 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].codec_dai
,
1477 dev_warn(card
->rtd
[i
].codec_dai
->dev
,
1478 "Failed to set DAI format: %d\n",
1481 ret
= snd_soc_dai_set_fmt(card
->rtd
[i
].cpu_dai
,
1484 dev_warn(card
->rtd
[i
].cpu_dai
->dev
,
1485 "Failed to set DAI format: %d\n",
1490 snprintf(card
->snd_card
->shortname
, sizeof(card
->snd_card
->shortname
),
1492 snprintf(card
->snd_card
->longname
, sizeof(card
->snd_card
->longname
),
1493 "%s", card
->long_name
? card
->long_name
: card
->name
);
1494 snprintf(card
->snd_card
->driver
, sizeof(card
->snd_card
->driver
),
1495 "%s", card
->driver_name
? card
->driver_name
: card
->name
);
1496 for (i
= 0; i
< ARRAY_SIZE(card
->snd_card
->driver
); i
++) {
1497 switch (card
->snd_card
->driver
[i
]) {
1503 if (!isalnum(card
->snd_card
->driver
[i
]))
1504 card
->snd_card
->driver
[i
] = '_';
1509 if (card
->late_probe
) {
1510 ret
= card
->late_probe(card
);
1512 dev_err(card
->dev
, "%s late_probe() failed: %d\n",
1514 goto probe_aux_dev_err
;
1518 snd_soc_dapm_new_widgets(&card
->dapm
);
1520 if (card
->fully_routed
)
1521 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
)
1522 snd_soc_dapm_auto_nc_codec_pins(codec
);
1524 ret
= snd_card_register(card
->snd_card
);
1526 printk(KERN_ERR
"asoc: failed to register soundcard for %s\n", card
->name
);
1527 goto probe_aux_dev_err
;
1530 #ifdef CONFIG_SND_SOC_AC97_BUS
1531 /* register any AC97 codecs */
1532 for (i
= 0; i
< card
->num_rtd
; i
++) {
1533 ret
= soc_register_ac97_dai_link(&card
->rtd
[i
]);
1535 printk(KERN_ERR
"asoc: failed to register AC97 %s\n", card
->name
);
1537 soc_unregister_ac97_dai_link(card
->rtd
[i
].codec
);
1538 goto probe_aux_dev_err
;
1543 card
->instantiated
= 1;
1544 snd_soc_dapm_sync(&card
->dapm
);
1545 mutex_unlock(&card
->mutex
);
1549 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1550 soc_remove_aux_dev(card
, i
);
1553 soc_remove_dai_links(card
);
1559 snd_card_free(card
->snd_card
);
1561 mutex_unlock(&card
->mutex
);
1565 * Attempt to initialise any uninitialised cards. Must be called with
1568 static void snd_soc_instantiate_cards(void)
1570 struct snd_soc_card
*card
;
1571 list_for_each_entry(card
, &card_list
, list
)
1572 snd_soc_instantiate_card(card
);
1575 /* probes a new socdev */
1576 static int soc_probe(struct platform_device
*pdev
)
1578 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1582 * no card, so machine driver should be registering card
1583 * we should not be here in that case so ret error
1588 /* Bodge while we unpick instantiation */
1589 card
->dev
= &pdev
->dev
;
1591 ret
= snd_soc_register_card(card
);
1593 dev_err(&pdev
->dev
, "Failed to register card\n");
1600 static int soc_cleanup_card_resources(struct snd_soc_card
*card
)
1604 /* make sure any delayed work runs */
1605 for (i
= 0; i
< card
->num_rtd
; i
++) {
1606 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1607 flush_delayed_work_sync(&rtd
->delayed_work
);
1610 /* remove auxiliary devices */
1611 for (i
= 0; i
< card
->num_aux_devs
; i
++)
1612 soc_remove_aux_dev(card
, i
);
1614 /* remove and free each DAI */
1615 soc_remove_dai_links(card
);
1617 soc_cleanup_card_debugfs(card
);
1619 /* remove the card */
1623 snd_soc_dapm_free(&card
->dapm
);
1626 snd_card_free(card
->snd_card
);
1631 /* removes a socdev */
1632 static int soc_remove(struct platform_device
*pdev
)
1634 struct snd_soc_card
*card
= platform_get_drvdata(pdev
);
1636 snd_soc_unregister_card(card
);
1640 int snd_soc_poweroff(struct device
*dev
)
1642 struct snd_soc_card
*card
= dev_get_drvdata(dev
);
1645 if (!card
->instantiated
)
1648 /* Flush out pmdown_time work - we actually do want to run it
1649 * now, we're shutting down so no imminent restart. */
1650 for (i
= 0; i
< card
->num_rtd
; i
++) {
1651 struct snd_soc_pcm_runtime
*rtd
= &card
->rtd
[i
];
1652 flush_delayed_work_sync(&rtd
->delayed_work
);
1655 snd_soc_dapm_shutdown(card
);
1659 EXPORT_SYMBOL_GPL(snd_soc_poweroff
);
1661 const struct dev_pm_ops snd_soc_pm_ops
= {
1662 .suspend
= snd_soc_suspend
,
1663 .resume
= snd_soc_resume
,
1664 .poweroff
= snd_soc_poweroff
,
1666 EXPORT_SYMBOL_GPL(snd_soc_pm_ops
);
1668 /* ASoC platform driver */
1669 static struct platform_driver soc_driver
= {
1671 .name
= "soc-audio",
1672 .owner
= THIS_MODULE
,
1673 .pm
= &snd_soc_pm_ops
,
1676 .remove
= soc_remove
,
1680 * snd_soc_codec_volatile_register: Report if a register is volatile.
1682 * @codec: CODEC to query.
1683 * @reg: Register to query.
1685 * Boolean function indiciating if a CODEC register is volatile.
1687 int snd_soc_codec_volatile_register(struct snd_soc_codec
*codec
,
1690 if (codec
->volatile_register
)
1691 return codec
->volatile_register(codec
, reg
);
1695 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register
);
1698 * snd_soc_codec_readable_register: Report if a register is readable.
1700 * @codec: CODEC to query.
1701 * @reg: Register to query.
1703 * Boolean function indicating if a CODEC register is readable.
1705 int snd_soc_codec_readable_register(struct snd_soc_codec
*codec
,
1708 if (codec
->readable_register
)
1709 return codec
->readable_register(codec
, reg
);
1713 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register
);
1716 * snd_soc_codec_writable_register: Report if a register is writable.
1718 * @codec: CODEC to query.
1719 * @reg: Register to query.
1721 * Boolean function indicating if a CODEC register is writable.
1723 int snd_soc_codec_writable_register(struct snd_soc_codec
*codec
,
1726 if (codec
->writable_register
)
1727 return codec
->writable_register(codec
, reg
);
1731 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register
);
1733 int snd_soc_platform_read(struct snd_soc_platform
*platform
,
1738 if (!platform
->driver
->read
) {
1739 dev_err(platform
->dev
, "platform has no read back\n");
1743 ret
= platform
->driver
->read(platform
, reg
);
1744 dev_dbg(platform
->dev
, "read %x => %x\n", reg
, ret
);
1745 trace_snd_soc_preg_read(platform
, reg
, ret
);
1749 EXPORT_SYMBOL_GPL(snd_soc_platform_read
);
1751 int snd_soc_platform_write(struct snd_soc_platform
*platform
,
1752 unsigned int reg
, unsigned int val
)
1754 if (!platform
->driver
->write
) {
1755 dev_err(platform
->dev
, "platform has no write back\n");
1759 dev_dbg(platform
->dev
, "write %x = %x\n", reg
, val
);
1760 trace_snd_soc_preg_write(platform
, reg
, val
);
1761 return platform
->driver
->write(platform
, reg
, val
);
1763 EXPORT_SYMBOL_GPL(snd_soc_platform_write
);
1766 * snd_soc_new_ac97_codec - initailise AC97 device
1767 * @codec: audio codec
1768 * @ops: AC97 bus operations
1769 * @num: AC97 codec number
1771 * Initialises AC97 codec resources for use by ad-hoc devices only.
1773 int snd_soc_new_ac97_codec(struct snd_soc_codec
*codec
,
1774 struct snd_ac97_bus_ops
*ops
, int num
)
1776 mutex_lock(&codec
->mutex
);
1778 codec
->ac97
= kzalloc(sizeof(struct snd_ac97
), GFP_KERNEL
);
1779 if (codec
->ac97
== NULL
) {
1780 mutex_unlock(&codec
->mutex
);
1784 codec
->ac97
->bus
= kzalloc(sizeof(struct snd_ac97_bus
), GFP_KERNEL
);
1785 if (codec
->ac97
->bus
== NULL
) {
1788 mutex_unlock(&codec
->mutex
);
1792 codec
->ac97
->bus
->ops
= ops
;
1793 codec
->ac97
->num
= num
;
1796 * Mark the AC97 device to be created by us. This way we ensure that the
1797 * device will be registered with the device subsystem later on.
1799 codec
->ac97_created
= 1;
1801 mutex_unlock(&codec
->mutex
);
1804 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec
);
1807 * snd_soc_free_ac97_codec - free AC97 codec device
1808 * @codec: audio codec
1810 * Frees AC97 codec device resources.
1812 void snd_soc_free_ac97_codec(struct snd_soc_codec
*codec
)
1814 mutex_lock(&codec
->mutex
);
1815 #ifdef CONFIG_SND_SOC_AC97_BUS
1816 soc_unregister_ac97_dai_link(codec
);
1818 kfree(codec
->ac97
->bus
);
1821 codec
->ac97_created
= 0;
1822 mutex_unlock(&codec
->mutex
);
1824 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec
);
1826 unsigned int snd_soc_read(struct snd_soc_codec
*codec
, unsigned int reg
)
1830 ret
= codec
->read(codec
, reg
);
1831 dev_dbg(codec
->dev
, "read %x => %x\n", reg
, ret
);
1832 trace_snd_soc_reg_read(codec
, reg
, ret
);
1836 EXPORT_SYMBOL_GPL(snd_soc_read
);
1838 unsigned int snd_soc_write(struct snd_soc_codec
*codec
,
1839 unsigned int reg
, unsigned int val
)
1841 dev_dbg(codec
->dev
, "write %x = %x\n", reg
, val
);
1842 trace_snd_soc_reg_write(codec
, reg
, val
);
1843 return codec
->write(codec
, reg
, val
);
1845 EXPORT_SYMBOL_GPL(snd_soc_write
);
1847 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec
*codec
,
1848 unsigned int reg
, const void *data
, size_t len
)
1850 return codec
->bulk_write_raw(codec
, reg
, data
, len
);
1852 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw
);
1855 * snd_soc_update_bits - update codec register bits
1856 * @codec: audio codec
1857 * @reg: codec register
1858 * @mask: register mask
1861 * Writes new register value.
1863 * Returns 1 for change, 0 for no change, or negative error code.
1865 int snd_soc_update_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1866 unsigned int mask
, unsigned int value
)
1869 unsigned int old
, new;
1872 ret
= snd_soc_read(codec
, reg
);
1877 new = (old
& ~mask
) | (value
& mask
);
1878 change
= old
!= new;
1880 ret
= snd_soc_write(codec
, reg
, new);
1887 EXPORT_SYMBOL_GPL(snd_soc_update_bits
);
1890 * snd_soc_update_bits_locked - update codec register bits
1891 * @codec: audio codec
1892 * @reg: codec register
1893 * @mask: register mask
1896 * Writes new register value, and takes the codec mutex.
1898 * Returns 1 for change else 0.
1900 int snd_soc_update_bits_locked(struct snd_soc_codec
*codec
,
1901 unsigned short reg
, unsigned int mask
,
1906 mutex_lock(&codec
->mutex
);
1907 change
= snd_soc_update_bits(codec
, reg
, mask
, value
);
1908 mutex_unlock(&codec
->mutex
);
1912 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked
);
1915 * snd_soc_test_bits - test register for change
1916 * @codec: audio codec
1917 * @reg: codec register
1918 * @mask: register mask
1921 * Tests a register with a new value and checks if the new value is
1922 * different from the old value.
1924 * Returns 1 for change else 0.
1926 int snd_soc_test_bits(struct snd_soc_codec
*codec
, unsigned short reg
,
1927 unsigned int mask
, unsigned int value
)
1930 unsigned int old
, new;
1932 old
= snd_soc_read(codec
, reg
);
1933 new = (old
& ~mask
) | value
;
1934 change
= old
!= new;
1938 EXPORT_SYMBOL_GPL(snd_soc_test_bits
);
1941 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1942 * @substream: the pcm substream
1943 * @hw: the hardware parameters
1945 * Sets the substream runtime hardware parameters.
1947 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream
*substream
,
1948 const struct snd_pcm_hardware
*hw
)
1950 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
1951 runtime
->hw
.info
= hw
->info
;
1952 runtime
->hw
.formats
= hw
->formats
;
1953 runtime
->hw
.period_bytes_min
= hw
->period_bytes_min
;
1954 runtime
->hw
.period_bytes_max
= hw
->period_bytes_max
;
1955 runtime
->hw
.periods_min
= hw
->periods_min
;
1956 runtime
->hw
.periods_max
= hw
->periods_max
;
1957 runtime
->hw
.buffer_bytes_max
= hw
->buffer_bytes_max
;
1958 runtime
->hw
.fifo_size
= hw
->fifo_size
;
1961 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams
);
1964 * snd_soc_cnew - create new control
1965 * @_template: control template
1966 * @data: control private data
1967 * @long_name: control long name
1968 * @prefix: control name prefix
1970 * Create a new mixer control from a template control.
1972 * Returns 0 for success, else error.
1974 struct snd_kcontrol
*snd_soc_cnew(const struct snd_kcontrol_new
*_template
,
1975 void *data
, char *long_name
,
1978 struct snd_kcontrol_new
template;
1979 struct snd_kcontrol
*kcontrol
;
1983 memcpy(&template, _template
, sizeof(template));
1987 long_name
= template.name
;
1990 name_len
= strlen(long_name
) + strlen(prefix
) + 2;
1991 name
= kmalloc(name_len
, GFP_KERNEL
);
1995 snprintf(name
, name_len
, "%s %s", prefix
, long_name
);
1997 template.name
= name
;
1999 template.name
= long_name
;
2002 kcontrol
= snd_ctl_new1(&template, data
);
2008 EXPORT_SYMBOL_GPL(snd_soc_cnew
);
2011 * snd_soc_add_controls - add an array of controls to a codec.
2012 * Convienience function to add a list of controls. Many codecs were
2013 * duplicating this code.
2015 * @codec: codec to add controls to
2016 * @controls: array of controls to add
2017 * @num_controls: number of elements in the array
2019 * Return 0 for success, else error.
2021 int snd_soc_add_controls(struct snd_soc_codec
*codec
,
2022 const struct snd_kcontrol_new
*controls
, int num_controls
)
2024 struct snd_card
*card
= codec
->card
->snd_card
;
2027 for (i
= 0; i
< num_controls
; i
++) {
2028 const struct snd_kcontrol_new
*control
= &controls
[i
];
2029 err
= snd_ctl_add(card
, snd_soc_cnew(control
, codec
,
2031 codec
->name_prefix
));
2033 dev_err(codec
->dev
, "%s: Failed to add %s: %d\n",
2034 codec
->name
, control
->name
, err
);
2041 EXPORT_SYMBOL_GPL(snd_soc_add_controls
);
2044 * snd_soc_add_platform_controls - add an array of controls to a platform.
2045 * Convienience function to add a list of controls.
2047 * @platform: platform to add controls to
2048 * @controls: array of controls to add
2049 * @num_controls: number of elements in the array
2051 * Return 0 for success, else error.
2053 int snd_soc_add_platform_controls(struct snd_soc_platform
*platform
,
2054 const struct snd_kcontrol_new
*controls
, int num_controls
)
2056 struct snd_card
*card
= platform
->card
->snd_card
;
2059 for (i
= 0; i
< num_controls
; i
++) {
2060 const struct snd_kcontrol_new
*control
= &controls
[i
];
2061 err
= snd_ctl_add(card
, snd_soc_cnew(control
, platform
,
2062 control
->name
, NULL
));
2064 dev_err(platform
->dev
, "Failed to add %s %d\n",control
->name
, err
);
2071 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls
);
2074 * snd_soc_info_enum_double - enumerated double mixer info callback
2075 * @kcontrol: mixer control
2076 * @uinfo: control element information
2078 * Callback to provide information about a double enumerated
2081 * Returns 0 for success.
2083 int snd_soc_info_enum_double(struct snd_kcontrol
*kcontrol
,
2084 struct snd_ctl_elem_info
*uinfo
)
2086 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2088 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2089 uinfo
->count
= e
->shift_l
== e
->shift_r
? 1 : 2;
2090 uinfo
->value
.enumerated
.items
= e
->max
;
2092 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2093 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2094 strcpy(uinfo
->value
.enumerated
.name
,
2095 e
->texts
[uinfo
->value
.enumerated
.item
]);
2098 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double
);
2101 * snd_soc_get_enum_double - enumerated double mixer get callback
2102 * @kcontrol: mixer control
2103 * @ucontrol: control element information
2105 * Callback to get the value of a double enumerated mixer.
2107 * Returns 0 for success.
2109 int snd_soc_get_enum_double(struct snd_kcontrol
*kcontrol
,
2110 struct snd_ctl_elem_value
*ucontrol
)
2112 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2113 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2114 unsigned int val
, bitmask
;
2116 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2118 val
= snd_soc_read(codec
, e
->reg
);
2119 ucontrol
->value
.enumerated
.item
[0]
2120 = (val
>> e
->shift_l
) & (bitmask
- 1);
2121 if (e
->shift_l
!= e
->shift_r
)
2122 ucontrol
->value
.enumerated
.item
[1] =
2123 (val
>> e
->shift_r
) & (bitmask
- 1);
2127 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double
);
2130 * snd_soc_put_enum_double - enumerated double mixer put callback
2131 * @kcontrol: mixer control
2132 * @ucontrol: control element information
2134 * Callback to set the value of a double enumerated mixer.
2136 * Returns 0 for success.
2138 int snd_soc_put_enum_double(struct snd_kcontrol
*kcontrol
,
2139 struct snd_ctl_elem_value
*ucontrol
)
2141 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2142 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2144 unsigned int mask
, bitmask
;
2146 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2148 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2150 val
= ucontrol
->value
.enumerated
.item
[0] << e
->shift_l
;
2151 mask
= (bitmask
- 1) << e
->shift_l
;
2152 if (e
->shift_l
!= e
->shift_r
) {
2153 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2155 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2156 mask
|= (bitmask
- 1) << e
->shift_r
;
2159 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2161 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double
);
2164 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2165 * @kcontrol: mixer control
2166 * @ucontrol: control element information
2168 * Callback to get the value of a double semi enumerated mixer.
2170 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2171 * used for handling bitfield coded enumeration for example.
2173 * Returns 0 for success.
2175 int snd_soc_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2176 struct snd_ctl_elem_value
*ucontrol
)
2178 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2179 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2180 unsigned int reg_val
, val
, mux
;
2182 reg_val
= snd_soc_read(codec
, e
->reg
);
2183 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2184 for (mux
= 0; mux
< e
->max
; mux
++) {
2185 if (val
== e
->values
[mux
])
2188 ucontrol
->value
.enumerated
.item
[0] = mux
;
2189 if (e
->shift_l
!= e
->shift_r
) {
2190 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2191 for (mux
= 0; mux
< e
->max
; mux
++) {
2192 if (val
== e
->values
[mux
])
2195 ucontrol
->value
.enumerated
.item
[1] = mux
;
2200 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double
);
2203 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2204 * @kcontrol: mixer control
2205 * @ucontrol: control element information
2207 * Callback to set the value of a double semi enumerated mixer.
2209 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2210 * used for handling bitfield coded enumeration for example.
2212 * Returns 0 for success.
2214 int snd_soc_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2215 struct snd_ctl_elem_value
*ucontrol
)
2217 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2218 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2222 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2224 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2225 mask
= e
->mask
<< e
->shift_l
;
2226 if (e
->shift_l
!= e
->shift_r
) {
2227 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2229 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2230 mask
|= e
->mask
<< e
->shift_r
;
2233 return snd_soc_update_bits_locked(codec
, e
->reg
, mask
, val
);
2235 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double
);
2238 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2239 * @kcontrol: mixer control
2240 * @uinfo: control element information
2242 * Callback to provide information about an external enumerated
2245 * Returns 0 for success.
2247 int snd_soc_info_enum_ext(struct snd_kcontrol
*kcontrol
,
2248 struct snd_ctl_elem_info
*uinfo
)
2250 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2252 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
2254 uinfo
->value
.enumerated
.items
= e
->max
;
2256 if (uinfo
->value
.enumerated
.item
> e
->max
- 1)
2257 uinfo
->value
.enumerated
.item
= e
->max
- 1;
2258 strcpy(uinfo
->value
.enumerated
.name
,
2259 e
->texts
[uinfo
->value
.enumerated
.item
]);
2262 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext
);
2265 * snd_soc_info_volsw_ext - external single mixer info callback
2266 * @kcontrol: mixer control
2267 * @uinfo: control element information
2269 * Callback to provide information about a single external mixer control.
2271 * Returns 0 for success.
2273 int snd_soc_info_volsw_ext(struct snd_kcontrol
*kcontrol
,
2274 struct snd_ctl_elem_info
*uinfo
)
2276 int max
= kcontrol
->private_value
;
2278 if (max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2279 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2281 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2284 uinfo
->value
.integer
.min
= 0;
2285 uinfo
->value
.integer
.max
= max
;
2288 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext
);
2291 * snd_soc_info_volsw - single mixer info callback
2292 * @kcontrol: mixer control
2293 * @uinfo: control element information
2295 * Callback to provide information about a single mixer control, or a double
2296 * mixer control that spans 2 registers.
2298 * Returns 0 for success.
2300 int snd_soc_info_volsw(struct snd_kcontrol
*kcontrol
,
2301 struct snd_ctl_elem_info
*uinfo
)
2303 struct soc_mixer_control
*mc
=
2304 (struct soc_mixer_control
*)kcontrol
->private_value
;
2307 if (!mc
->platform_max
)
2308 mc
->platform_max
= mc
->max
;
2309 platform_max
= mc
->platform_max
;
2311 if (platform_max
== 1 && !strstr(kcontrol
->id
.name
, " Volume"))
2312 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2314 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2316 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
2317 uinfo
->value
.integer
.min
= 0;
2318 uinfo
->value
.integer
.max
= platform_max
;
2321 EXPORT_SYMBOL_GPL(snd_soc_info_volsw
);
2324 * snd_soc_get_volsw - single mixer get callback
2325 * @kcontrol: mixer control
2326 * @ucontrol: control element information
2328 * Callback to get the value of a single mixer control, or a double mixer
2329 * control that spans 2 registers.
2331 * Returns 0 for success.
2333 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
2334 struct snd_ctl_elem_value
*ucontrol
)
2336 struct soc_mixer_control
*mc
=
2337 (struct soc_mixer_control
*)kcontrol
->private_value
;
2338 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2339 unsigned int reg
= mc
->reg
;
2340 unsigned int reg2
= mc
->rreg
;
2341 unsigned int shift
= mc
->shift
;
2342 unsigned int rshift
= mc
->rshift
;
2344 unsigned int mask
= (1 << fls(max
)) - 1;
2345 unsigned int invert
= mc
->invert
;
2347 ucontrol
->value
.integer
.value
[0] =
2348 (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2350 ucontrol
->value
.integer
.value
[0] =
2351 max
- ucontrol
->value
.integer
.value
[0];
2353 if (snd_soc_volsw_is_stereo(mc
)) {
2355 ucontrol
->value
.integer
.value
[1] =
2356 (snd_soc_read(codec
, reg
) >> rshift
) & mask
;
2358 ucontrol
->value
.integer
.value
[1] =
2359 (snd_soc_read(codec
, reg2
) >> shift
) & mask
;
2361 ucontrol
->value
.integer
.value
[1] =
2362 max
- ucontrol
->value
.integer
.value
[1];
2367 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
2370 * snd_soc_put_volsw - single mixer put callback
2371 * @kcontrol: mixer control
2372 * @ucontrol: control element information
2374 * Callback to set the value of a single mixer control, or a double mixer
2375 * control that spans 2 registers.
2377 * Returns 0 for success.
2379 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
2380 struct snd_ctl_elem_value
*ucontrol
)
2382 struct soc_mixer_control
*mc
=
2383 (struct soc_mixer_control
*)kcontrol
->private_value
;
2384 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2385 unsigned int reg
= mc
->reg
;
2386 unsigned int reg2
= mc
->rreg
;
2387 unsigned int shift
= mc
->shift
;
2388 unsigned int rshift
= mc
->rshift
;
2390 unsigned int mask
= (1 << fls(max
)) - 1;
2391 unsigned int invert
= mc
->invert
;
2394 unsigned int val2
= 0;
2395 unsigned int val
, val_mask
;
2397 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2400 val_mask
= mask
<< shift
;
2402 if (snd_soc_volsw_is_stereo(mc
)) {
2403 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
2407 val_mask
|= mask
<< rshift
;
2408 val
|= val2
<< rshift
;
2410 val2
= val2
<< shift
;
2414 err
= snd_soc_update_bits_locked(codec
, reg
, val_mask
, val
);
2419 err
= snd_soc_update_bits_locked(codec
, reg2
, val_mask
, val2
);
2423 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
2426 * snd_soc_info_volsw_s8 - signed mixer info callback
2427 * @kcontrol: mixer control
2428 * @uinfo: control element information
2430 * Callback to provide information about a signed mixer control.
2432 * Returns 0 for success.
2434 int snd_soc_info_volsw_s8(struct snd_kcontrol
*kcontrol
,
2435 struct snd_ctl_elem_info
*uinfo
)
2437 struct soc_mixer_control
*mc
=
2438 (struct soc_mixer_control
*)kcontrol
->private_value
;
2442 if (!mc
->platform_max
)
2443 mc
->platform_max
= mc
->max
;
2444 platform_max
= mc
->platform_max
;
2446 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2448 uinfo
->value
.integer
.min
= 0;
2449 uinfo
->value
.integer
.max
= platform_max
- min
;
2452 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8
);
2455 * snd_soc_get_volsw_s8 - signed mixer get callback
2456 * @kcontrol: mixer control
2457 * @ucontrol: control element information
2459 * Callback to get the value of a signed mixer control.
2461 * Returns 0 for success.
2463 int snd_soc_get_volsw_s8(struct snd_kcontrol
*kcontrol
,
2464 struct snd_ctl_elem_value
*ucontrol
)
2466 struct soc_mixer_control
*mc
=
2467 (struct soc_mixer_control
*)kcontrol
->private_value
;
2468 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2469 unsigned int reg
= mc
->reg
;
2471 int val
= snd_soc_read(codec
, reg
);
2473 ucontrol
->value
.integer
.value
[0] =
2474 ((signed char)(val
& 0xff))-min
;
2475 ucontrol
->value
.integer
.value
[1] =
2476 ((signed char)((val
>> 8) & 0xff))-min
;
2479 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8
);
2482 * snd_soc_put_volsw_sgn - signed mixer put callback
2483 * @kcontrol: mixer control
2484 * @ucontrol: control element information
2486 * Callback to set the value of a signed mixer control.
2488 * Returns 0 for success.
2490 int snd_soc_put_volsw_s8(struct snd_kcontrol
*kcontrol
,
2491 struct snd_ctl_elem_value
*ucontrol
)
2493 struct soc_mixer_control
*mc
=
2494 (struct soc_mixer_control
*)kcontrol
->private_value
;
2495 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2496 unsigned int reg
= mc
->reg
;
2500 val
= (ucontrol
->value
.integer
.value
[0]+min
) & 0xff;
2501 val
|= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff) << 8;
2503 return snd_soc_update_bits_locked(codec
, reg
, 0xffff, val
);
2505 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8
);
2508 * snd_soc_limit_volume - Set new limit to an existing volume control.
2510 * @codec: where to look for the control
2511 * @name: Name of the control
2512 * @max: new maximum limit
2514 * Return 0 for success, else error.
2516 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
2517 const char *name
, int max
)
2519 struct snd_card
*card
= codec
->card
->snd_card
;
2520 struct snd_kcontrol
*kctl
;
2521 struct soc_mixer_control
*mc
;
2525 /* Sanity check for name and max */
2526 if (unlikely(!name
|| max
<= 0))
2529 list_for_each_entry(kctl
, &card
->controls
, list
) {
2530 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
2536 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
2537 if (max
<= mc
->max
) {
2538 mc
->platform_max
= max
;
2544 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
2547 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2548 * mixer info callback
2549 * @kcontrol: mixer control
2550 * @uinfo: control element information
2552 * Returns 0 for success.
2554 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2555 struct snd_ctl_elem_info
*uinfo
)
2557 struct soc_mixer_control
*mc
=
2558 (struct soc_mixer_control
*)kcontrol
->private_value
;
2562 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
2564 uinfo
->value
.integer
.min
= 0;
2565 uinfo
->value
.integer
.max
= max
-min
;
2569 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx
);
2572 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2573 * mixer get callback
2574 * @kcontrol: mixer control
2575 * @uinfo: control element information
2577 * Returns 0 for success.
2579 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2580 struct snd_ctl_elem_value
*ucontrol
)
2582 struct soc_mixer_control
*mc
=
2583 (struct soc_mixer_control
*)kcontrol
->private_value
;
2584 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2585 unsigned int mask
= (1<<mc
->shift
)-1;
2587 int val
= snd_soc_read(codec
, mc
->reg
) & mask
;
2588 int valr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2590 ucontrol
->value
.integer
.value
[0] = ((val
& 0xff)-min
) & mask
;
2591 ucontrol
->value
.integer
.value
[1] = ((valr
& 0xff)-min
) & mask
;
2594 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx
);
2597 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2598 * mixer put callback
2599 * @kcontrol: mixer control
2600 * @uinfo: control element information
2602 * Returns 0 for success.
2604 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol
*kcontrol
,
2605 struct snd_ctl_elem_value
*ucontrol
)
2607 struct soc_mixer_control
*mc
=
2608 (struct soc_mixer_control
*)kcontrol
->private_value
;
2609 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2610 unsigned int mask
= (1<<mc
->shift
)-1;
2613 unsigned int val
, valr
, oval
, ovalr
;
2615 val
= ((ucontrol
->value
.integer
.value
[0]+min
) & 0xff);
2617 valr
= ((ucontrol
->value
.integer
.value
[1]+min
) & 0xff);
2620 oval
= snd_soc_read(codec
, mc
->reg
) & mask
;
2621 ovalr
= snd_soc_read(codec
, mc
->rreg
) & mask
;
2625 ret
= snd_soc_write(codec
, mc
->reg
, val
);
2629 if (ovalr
!= valr
) {
2630 ret
= snd_soc_write(codec
, mc
->rreg
, valr
);
2637 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx
);
2640 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2642 * @clk_id: DAI specific clock ID
2643 * @freq: new clock frequency in Hz
2644 * @dir: new clock direction - input/output.
2646 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2648 int snd_soc_dai_set_sysclk(struct snd_soc_dai
*dai
, int clk_id
,
2649 unsigned int freq
, int dir
)
2651 if (dai
->driver
&& dai
->driver
->ops
->set_sysclk
)
2652 return dai
->driver
->ops
->set_sysclk(dai
, clk_id
, freq
, dir
);
2653 else if (dai
->codec
&& dai
->codec
->driver
->set_sysclk
)
2654 return dai
->codec
->driver
->set_sysclk(dai
->codec
, clk_id
, 0,
2659 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk
);
2662 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2664 * @clk_id: DAI specific clock ID
2665 * @source: Source for the clock
2666 * @freq: new clock frequency in Hz
2667 * @dir: new clock direction - input/output.
2669 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2671 int snd_soc_codec_set_sysclk(struct snd_soc_codec
*codec
, int clk_id
,
2672 int source
, unsigned int freq
, int dir
)
2674 if (codec
->driver
->set_sysclk
)
2675 return codec
->driver
->set_sysclk(codec
, clk_id
, source
,
2680 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk
);
2683 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2685 * @div_id: DAI specific clock divider ID
2686 * @div: new clock divisor.
2688 * Configures the clock dividers. This is used to derive the best DAI bit and
2689 * frame clocks from the system or master clock. It's best to set the DAI bit
2690 * and frame clocks as low as possible to save system power.
2692 int snd_soc_dai_set_clkdiv(struct snd_soc_dai
*dai
,
2693 int div_id
, int div
)
2695 if (dai
->driver
&& dai
->driver
->ops
->set_clkdiv
)
2696 return dai
->driver
->ops
->set_clkdiv(dai
, div_id
, div
);
2700 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv
);
2703 * snd_soc_dai_set_pll - configure DAI PLL.
2705 * @pll_id: DAI specific PLL ID
2706 * @source: DAI specific source for the PLL
2707 * @freq_in: PLL input clock frequency in Hz
2708 * @freq_out: requested PLL output clock frequency in Hz
2710 * Configures and enables PLL to generate output clock based on input clock.
2712 int snd_soc_dai_set_pll(struct snd_soc_dai
*dai
, int pll_id
, int source
,
2713 unsigned int freq_in
, unsigned int freq_out
)
2715 if (dai
->driver
&& dai
->driver
->ops
->set_pll
)
2716 return dai
->driver
->ops
->set_pll(dai
, pll_id
, source
,
2718 else if (dai
->codec
&& dai
->codec
->driver
->set_pll
)
2719 return dai
->codec
->driver
->set_pll(dai
->codec
, pll_id
, source
,
2724 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll
);
2727 * snd_soc_codec_set_pll - configure codec PLL.
2729 * @pll_id: DAI specific PLL ID
2730 * @source: DAI specific source for the PLL
2731 * @freq_in: PLL input clock frequency in Hz
2732 * @freq_out: requested PLL output clock frequency in Hz
2734 * Configures and enables PLL to generate output clock based on input clock.
2736 int snd_soc_codec_set_pll(struct snd_soc_codec
*codec
, int pll_id
, int source
,
2737 unsigned int freq_in
, unsigned int freq_out
)
2739 if (codec
->driver
->set_pll
)
2740 return codec
->driver
->set_pll(codec
, pll_id
, source
,
2745 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll
);
2748 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2750 * @fmt: SND_SOC_DAIFMT_ format value.
2752 * Configures the DAI hardware format and clocking.
2754 int snd_soc_dai_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
2756 if (dai
->driver
&& dai
->driver
->ops
->set_fmt
)
2757 return dai
->driver
->ops
->set_fmt(dai
, fmt
);
2761 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt
);
2764 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2766 * @tx_mask: bitmask representing active TX slots.
2767 * @rx_mask: bitmask representing active RX slots.
2768 * @slots: Number of slots in use.
2769 * @slot_width: Width in bits for each slot.
2771 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2774 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai
*dai
,
2775 unsigned int tx_mask
, unsigned int rx_mask
, int slots
, int slot_width
)
2777 if (dai
->driver
&& dai
->driver
->ops
->set_tdm_slot
)
2778 return dai
->driver
->ops
->set_tdm_slot(dai
, tx_mask
, rx_mask
,
2783 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot
);
2786 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2788 * @tx_num: how many TX channels
2789 * @tx_slot: pointer to an array which imply the TX slot number channel
2791 * @rx_num: how many RX channels
2792 * @rx_slot: pointer to an array which imply the RX slot number channel
2795 * configure the relationship between channel number and TDM slot number.
2797 int snd_soc_dai_set_channel_map(struct snd_soc_dai
*dai
,
2798 unsigned int tx_num
, unsigned int *tx_slot
,
2799 unsigned int rx_num
, unsigned int *rx_slot
)
2801 if (dai
->driver
&& dai
->driver
->ops
->set_channel_map
)
2802 return dai
->driver
->ops
->set_channel_map(dai
, tx_num
, tx_slot
,
2807 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map
);
2810 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2812 * @tristate: tristate enable
2814 * Tristates the DAI so that others can use it.
2816 int snd_soc_dai_set_tristate(struct snd_soc_dai
*dai
, int tristate
)
2818 if (dai
->driver
&& dai
->driver
->ops
->set_tristate
)
2819 return dai
->driver
->ops
->set_tristate(dai
, tristate
);
2823 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate
);
2826 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2828 * @mute: mute enable
2830 * Mutes the DAI DAC.
2832 int snd_soc_dai_digital_mute(struct snd_soc_dai
*dai
, int mute
)
2834 if (dai
->driver
&& dai
->driver
->ops
->digital_mute
)
2835 return dai
->driver
->ops
->digital_mute(dai
, mute
);
2839 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute
);
2842 * snd_soc_register_card - Register a card with the ASoC core
2844 * @card: Card to register
2847 int snd_soc_register_card(struct snd_soc_card
*card
)
2851 if (!card
->name
|| !card
->dev
)
2854 for (i
= 0; i
< card
->num_links
; i
++) {
2855 struct snd_soc_dai_link
*link
= &card
->dai_link
[i
];
2858 * Codec must be specified by 1 of name or OF node,
2859 * not both or neither.
2861 if (!!link
->codec_name
== !!link
->codec_of_node
) {
2863 "Neither/both codec name/of_node are set\n");
2868 * Platform may be specified by either name or OF node, but
2869 * can be left unspecified, and a dummy platform will be used.
2871 if (link
->platform_name
&& link
->platform_of_node
) {
2873 "Both platform name/of_node are set\n");
2878 * CPU DAI must be specified by 1 of name or OF node,
2879 * not both or neither.
2881 if (!!link
->cpu_dai_name
== !!link
->cpu_dai_of_node
) {
2883 "Neither/both cpu_dai name/of_node are set\n");
2888 dev_set_drvdata(card
->dev
, card
);
2890 snd_soc_initialize_card_lists(card
);
2892 soc_init_card_debugfs(card
);
2894 card
->rtd
= kzalloc(sizeof(struct snd_soc_pcm_runtime
) *
2895 (card
->num_links
+ card
->num_aux_devs
),
2897 if (card
->rtd
== NULL
)
2899 card
->rtd_aux
= &card
->rtd
[card
->num_links
];
2901 for (i
= 0; i
< card
->num_links
; i
++)
2902 card
->rtd
[i
].dai_link
= &card
->dai_link
[i
];
2904 INIT_LIST_HEAD(&card
->list
);
2905 INIT_LIST_HEAD(&card
->dapm_dirty
);
2906 card
->instantiated
= 0;
2907 mutex_init(&card
->mutex
);
2909 mutex_lock(&client_mutex
);
2910 list_add(&card
->list
, &card_list
);
2911 snd_soc_instantiate_cards();
2912 mutex_unlock(&client_mutex
);
2914 dev_dbg(card
->dev
, "Registered card '%s'\n", card
->name
);
2918 EXPORT_SYMBOL_GPL(snd_soc_register_card
);
2921 * snd_soc_unregister_card - Unregister a card with the ASoC core
2923 * @card: Card to unregister
2926 int snd_soc_unregister_card(struct snd_soc_card
*card
)
2928 if (card
->instantiated
)
2929 soc_cleanup_card_resources(card
);
2930 mutex_lock(&client_mutex
);
2931 list_del(&card
->list
);
2932 mutex_unlock(&client_mutex
);
2933 dev_dbg(card
->dev
, "Unregistered card '%s'\n", card
->name
);
2937 EXPORT_SYMBOL_GPL(snd_soc_unregister_card
);
2940 * Simplify DAI link configuration by removing ".-1" from device names
2941 * and sanitizing names.
2943 static char *fmt_single_name(struct device
*dev
, int *id
)
2945 char *found
, name
[NAME_SIZE
];
2948 if (dev_name(dev
) == NULL
)
2951 strlcpy(name
, dev_name(dev
), NAME_SIZE
);
2953 /* are we a "%s.%d" name (platform and SPI components) */
2954 found
= strstr(name
, dev
->driver
->name
);
2957 if (sscanf(&found
[strlen(dev
->driver
->name
)], ".%d", id
) == 1) {
2959 /* discard ID from name if ID == -1 */
2961 found
[strlen(dev
->driver
->name
)] = '\0';
2965 /* I2C component devices are named "bus-addr" */
2966 if (sscanf(name
, "%x-%x", &id1
, &id2
) == 2) {
2967 char tmp
[NAME_SIZE
];
2969 /* create unique ID number from I2C addr and bus */
2970 *id
= ((id1
& 0xffff) << 16) + id2
;
2972 /* sanitize component name for DAI link creation */
2973 snprintf(tmp
, NAME_SIZE
, "%s.%s", dev
->driver
->name
, name
);
2974 strlcpy(name
, tmp
, NAME_SIZE
);
2979 return kstrdup(name
, GFP_KERNEL
);
2983 * Simplify DAI link naming for single devices with multiple DAIs by removing
2984 * any ".-1" and using the DAI name (instead of device name).
2986 static inline char *fmt_multiple_name(struct device
*dev
,
2987 struct snd_soc_dai_driver
*dai_drv
)
2989 if (dai_drv
->name
== NULL
) {
2990 printk(KERN_ERR
"asoc: error - multiple DAI %s registered with no name\n",
2995 return kstrdup(dai_drv
->name
, GFP_KERNEL
);
2999 * snd_soc_register_dai - Register a DAI with the ASoC core
3001 * @dai: DAI to register
3003 int snd_soc_register_dai(struct device
*dev
,
3004 struct snd_soc_dai_driver
*dai_drv
)
3006 struct snd_soc_dai
*dai
;
3008 dev_dbg(dev
, "dai register %s\n", dev_name(dev
));
3010 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3014 /* create DAI component name */
3015 dai
->name
= fmt_single_name(dev
, &dai
->id
);
3016 if (dai
->name
== NULL
) {
3022 dai
->driver
= dai_drv
;
3023 if (!dai
->driver
->ops
)
3024 dai
->driver
->ops
= &null_dai_ops
;
3026 mutex_lock(&client_mutex
);
3027 list_add(&dai
->list
, &dai_list
);
3028 snd_soc_instantiate_cards();
3029 mutex_unlock(&client_mutex
);
3031 pr_debug("Registered DAI '%s'\n", dai
->name
);
3035 EXPORT_SYMBOL_GPL(snd_soc_register_dai
);
3038 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3040 * @dai: DAI to unregister
3042 void snd_soc_unregister_dai(struct device
*dev
)
3044 struct snd_soc_dai
*dai
;
3046 list_for_each_entry(dai
, &dai_list
, list
) {
3047 if (dev
== dai
->dev
)
3053 mutex_lock(&client_mutex
);
3054 list_del(&dai
->list
);
3055 mutex_unlock(&client_mutex
);
3057 pr_debug("Unregistered DAI '%s'\n", dai
->name
);
3061 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai
);
3064 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3066 * @dai: Array of DAIs to register
3067 * @count: Number of DAIs
3069 int snd_soc_register_dais(struct device
*dev
,
3070 struct snd_soc_dai_driver
*dai_drv
, size_t count
)
3072 struct snd_soc_dai
*dai
;
3075 dev_dbg(dev
, "dai register %s #%Zu\n", dev_name(dev
), count
);
3077 for (i
= 0; i
< count
; i
++) {
3079 dai
= kzalloc(sizeof(struct snd_soc_dai
), GFP_KERNEL
);
3085 /* create DAI component name */
3086 dai
->name
= fmt_multiple_name(dev
, &dai_drv
[i
]);
3087 if (dai
->name
== NULL
) {
3094 dai
->driver
= &dai_drv
[i
];
3095 if (dai
->driver
->id
)
3096 dai
->id
= dai
->driver
->id
;
3099 if (!dai
->driver
->ops
)
3100 dai
->driver
->ops
= &null_dai_ops
;
3102 mutex_lock(&client_mutex
);
3103 list_add(&dai
->list
, &dai_list
);
3104 mutex_unlock(&client_mutex
);
3106 pr_debug("Registered DAI '%s'\n", dai
->name
);
3109 mutex_lock(&client_mutex
);
3110 snd_soc_instantiate_cards();
3111 mutex_unlock(&client_mutex
);
3115 for (i
--; i
>= 0; i
--)
3116 snd_soc_unregister_dai(dev
);
3120 EXPORT_SYMBOL_GPL(snd_soc_register_dais
);
3123 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3125 * @dai: Array of DAIs to unregister
3126 * @count: Number of DAIs
3128 void snd_soc_unregister_dais(struct device
*dev
, size_t count
)
3132 for (i
= 0; i
< count
; i
++)
3133 snd_soc_unregister_dai(dev
);
3135 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais
);
3138 * snd_soc_register_platform - Register a platform with the ASoC core
3140 * @platform: platform to register
3142 int snd_soc_register_platform(struct device
*dev
,
3143 struct snd_soc_platform_driver
*platform_drv
)
3145 struct snd_soc_platform
*platform
;
3147 dev_dbg(dev
, "platform register %s\n", dev_name(dev
));
3149 platform
= kzalloc(sizeof(struct snd_soc_platform
), GFP_KERNEL
);
3150 if (platform
== NULL
)
3153 /* create platform component name */
3154 platform
->name
= fmt_single_name(dev
, &platform
->id
);
3155 if (platform
->name
== NULL
) {
3160 platform
->dev
= dev
;
3161 platform
->driver
= platform_drv
;
3162 platform
->dapm
.dev
= dev
;
3163 platform
->dapm
.platform
= platform
;
3164 platform
->dapm
.stream_event
= platform_drv
->stream_event
;
3166 mutex_lock(&client_mutex
);
3167 list_add(&platform
->list
, &platform_list
);
3168 snd_soc_instantiate_cards();
3169 mutex_unlock(&client_mutex
);
3171 pr_debug("Registered platform '%s'\n", platform
->name
);
3175 EXPORT_SYMBOL_GPL(snd_soc_register_platform
);
3178 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3180 * @platform: platform to unregister
3182 void snd_soc_unregister_platform(struct device
*dev
)
3184 struct snd_soc_platform
*platform
;
3186 list_for_each_entry(platform
, &platform_list
, list
) {
3187 if (dev
== platform
->dev
)
3193 mutex_lock(&client_mutex
);
3194 list_del(&platform
->list
);
3195 mutex_unlock(&client_mutex
);
3197 pr_debug("Unregistered platform '%s'\n", platform
->name
);
3198 kfree(platform
->name
);
3201 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform
);
3203 static u64 codec_format_map
[] = {
3204 SNDRV_PCM_FMTBIT_S16_LE
| SNDRV_PCM_FMTBIT_S16_BE
,
3205 SNDRV_PCM_FMTBIT_U16_LE
| SNDRV_PCM_FMTBIT_U16_BE
,
3206 SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S24_BE
,
3207 SNDRV_PCM_FMTBIT_U24_LE
| SNDRV_PCM_FMTBIT_U24_BE
,
3208 SNDRV_PCM_FMTBIT_S32_LE
| SNDRV_PCM_FMTBIT_S32_BE
,
3209 SNDRV_PCM_FMTBIT_U32_LE
| SNDRV_PCM_FMTBIT_U32_BE
,
3210 SNDRV_PCM_FMTBIT_S24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3211 SNDRV_PCM_FMTBIT_U24_3LE
| SNDRV_PCM_FMTBIT_U24_3BE
,
3212 SNDRV_PCM_FMTBIT_S20_3LE
| SNDRV_PCM_FMTBIT_S20_3BE
,
3213 SNDRV_PCM_FMTBIT_U20_3LE
| SNDRV_PCM_FMTBIT_U20_3BE
,
3214 SNDRV_PCM_FMTBIT_S18_3LE
| SNDRV_PCM_FMTBIT_S18_3BE
,
3215 SNDRV_PCM_FMTBIT_U18_3LE
| SNDRV_PCM_FMTBIT_U18_3BE
,
3216 SNDRV_PCM_FMTBIT_FLOAT_LE
| SNDRV_PCM_FMTBIT_FLOAT_BE
,
3217 SNDRV_PCM_FMTBIT_FLOAT64_LE
| SNDRV_PCM_FMTBIT_FLOAT64_BE
,
3218 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3219 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
,
3222 /* Fix up the DAI formats for endianness: codecs don't actually see
3223 * the endianness of the data but we're using the CPU format
3224 * definitions which do need to include endianness so we ensure that
3225 * codec DAIs always have both big and little endian variants set.
3227 static void fixup_codec_formats(struct snd_soc_pcm_stream
*stream
)
3231 for (i
= 0; i
< ARRAY_SIZE(codec_format_map
); i
++)
3232 if (stream
->formats
& codec_format_map
[i
])
3233 stream
->formats
|= codec_format_map
[i
];
3237 * snd_soc_register_codec - Register a codec with the ASoC core
3239 * @codec: codec to register
3241 int snd_soc_register_codec(struct device
*dev
,
3242 const struct snd_soc_codec_driver
*codec_drv
,
3243 struct snd_soc_dai_driver
*dai_drv
,
3247 struct snd_soc_codec
*codec
;
3250 dev_dbg(dev
, "codec register %s\n", dev_name(dev
));
3252 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
3256 /* create CODEC component name */
3257 codec
->name
= fmt_single_name(dev
, &codec
->id
);
3258 if (codec
->name
== NULL
) {
3263 if (codec_drv
->compress_type
)
3264 codec
->compress_type
= codec_drv
->compress_type
;
3266 codec
->compress_type
= SND_SOC_FLAT_COMPRESSION
;
3268 codec
->write
= codec_drv
->write
;
3269 codec
->read
= codec_drv
->read
;
3270 codec
->volatile_register
= codec_drv
->volatile_register
;
3271 codec
->readable_register
= codec_drv
->readable_register
;
3272 codec
->writable_register
= codec_drv
->writable_register
;
3273 codec
->dapm
.bias_level
= SND_SOC_BIAS_OFF
;
3274 codec
->dapm
.dev
= dev
;
3275 codec
->dapm
.codec
= codec
;
3276 codec
->dapm
.seq_notifier
= codec_drv
->seq_notifier
;
3277 codec
->dapm
.stream_event
= codec_drv
->stream_event
;
3279 codec
->driver
= codec_drv
;
3280 codec
->num_dai
= num_dai
;
3281 mutex_init(&codec
->mutex
);
3283 /* allocate CODEC register cache */
3284 if (codec_drv
->reg_cache_size
&& codec_drv
->reg_word_size
) {
3285 reg_size
= codec_drv
->reg_cache_size
* codec_drv
->reg_word_size
;
3286 codec
->reg_size
= reg_size
;
3287 /* it is necessary to make a copy of the default register cache
3288 * because in the case of using a compression type that requires
3289 * the default register cache to be marked as __devinitconst the
3290 * kernel might have freed the array by the time we initialize
3293 if (codec_drv
->reg_cache_default
) {
3294 codec
->reg_def_copy
= kmemdup(codec_drv
->reg_cache_default
,
3295 reg_size
, GFP_KERNEL
);
3296 if (!codec
->reg_def_copy
) {
3303 if (codec_drv
->reg_access_size
&& codec_drv
->reg_access_default
) {
3304 if (!codec
->volatile_register
)
3305 codec
->volatile_register
= snd_soc_default_volatile_register
;
3306 if (!codec
->readable_register
)
3307 codec
->readable_register
= snd_soc_default_readable_register
;
3308 if (!codec
->writable_register
)
3309 codec
->writable_register
= snd_soc_default_writable_register
;
3312 for (i
= 0; i
< num_dai
; i
++) {
3313 fixup_codec_formats(&dai_drv
[i
].playback
);
3314 fixup_codec_formats(&dai_drv
[i
].capture
);
3317 /* register any DAIs */
3319 ret
= snd_soc_register_dais(dev
, dai_drv
, num_dai
);
3324 mutex_lock(&client_mutex
);
3325 list_add(&codec
->list
, &codec_list
);
3326 snd_soc_instantiate_cards();
3327 mutex_unlock(&client_mutex
);
3329 pr_debug("Registered codec '%s'\n", codec
->name
);
3333 kfree(codec
->reg_def_copy
);
3334 codec
->reg_def_copy
= NULL
;
3339 EXPORT_SYMBOL_GPL(snd_soc_register_codec
);
3342 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3344 * @codec: codec to unregister
3346 void snd_soc_unregister_codec(struct device
*dev
)
3348 struct snd_soc_codec
*codec
;
3351 list_for_each_entry(codec
, &codec_list
, list
) {
3352 if (dev
== codec
->dev
)
3359 for (i
= 0; i
< codec
->num_dai
; i
++)
3360 snd_soc_unregister_dai(dev
);
3362 mutex_lock(&client_mutex
);
3363 list_del(&codec
->list
);
3364 mutex_unlock(&client_mutex
);
3366 pr_debug("Unregistered codec '%s'\n", codec
->name
);
3368 snd_soc_cache_exit(codec
);
3369 kfree(codec
->reg_def_copy
);
3373 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec
);
3375 /* Retrieve a card's name from device tree */
3376 int snd_soc_of_parse_card_name(struct snd_soc_card
*card
,
3377 const char *propname
)
3379 struct device_node
*np
= card
->dev
->of_node
;
3382 ret
= of_property_read_string_index(np
, propname
, 0, &card
->name
);
3384 * EINVAL means the property does not exist. This is fine providing
3385 * card->name was previously set, which is checked later in
3386 * snd_soc_register_card.
3388 if (ret
< 0 && ret
!= -EINVAL
) {
3390 "Property '%s' could not be read: %d\n",
3397 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name
);
3399 int snd_soc_of_parse_audio_routing(struct snd_soc_card
*card
,
3400 const char *propname
)
3402 struct device_node
*np
= card
->dev
->of_node
;
3404 struct snd_soc_dapm_route
*routes
;
3407 num_routes
= of_property_count_strings(np
, propname
);
3408 if (num_routes
& 1) {
3410 "Property '%s's length is not even\n",
3417 "Property '%s's length is zero\n",
3422 routes
= devm_kzalloc(card
->dev
, num_routes
* sizeof(*routes
),
3426 "Could not allocate DAPM route table\n");
3430 for (i
= 0; i
< num_routes
; i
++) {
3431 ret
= of_property_read_string_index(np
, propname
,
3432 2 * i
, &routes
[i
].sink
);
3435 "Property '%s' index %d could not be read: %d\n",
3436 propname
, 2 * i
, ret
);
3439 ret
= of_property_read_string_index(np
, propname
,
3440 (2 * i
) + 1, &routes
[i
].source
);
3443 "Property '%s' index %d could not be read: %d\n",
3444 propname
, (2 * i
) + 1, ret
);
3449 card
->num_dapm_routes
= num_routes
;
3450 card
->dapm_routes
= routes
;
3454 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing
);
3456 static int __init
snd_soc_init(void)
3458 #ifdef CONFIG_DEBUG_FS
3459 snd_soc_debugfs_root
= debugfs_create_dir("asoc", NULL
);
3460 if (IS_ERR(snd_soc_debugfs_root
) || !snd_soc_debugfs_root
) {
3462 "ASoC: Failed to create debugfs directory\n");
3463 snd_soc_debugfs_root
= NULL
;
3466 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root
, NULL
,
3468 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3470 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root
, NULL
,
3472 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3474 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root
, NULL
,
3475 &platform_list_fops
))
3476 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3479 snd_soc_util_init();
3481 return platform_driver_register(&soc_driver
);
3483 module_init(snd_soc_init
);
3485 static void __exit
snd_soc_exit(void)
3487 snd_soc_util_exit();
3489 #ifdef CONFIG_DEBUG_FS
3490 debugfs_remove_recursive(snd_soc_debugfs_root
);
3492 platform_driver_unregister(&soc_driver
);
3494 module_exit(snd_soc_exit
);
3496 /* Module information */
3497 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3498 MODULE_DESCRIPTION("ALSA SoC Core");
3499 MODULE_LICENSE("GPL");
3500 MODULE_ALIAS("platform:soc-audio");