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/soc-dpcm.h>
43 #include <sound/initval.h>
45 #define CREATE_TRACE_POINTS
46 #include <trace/events/asoc.h>
50 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
52 #ifdef CONFIG_DEBUG_FS
53 struct dentry *snd_soc_debugfs_root;
54 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
57 static DEFINE_MUTEX(client_mutex);
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 ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
205 size_t count, loff_t *ppos)
208 struct snd_soc_codec *codec = file->private_data;
211 if (*ppos < 0 || !count)
214 buf = kmalloc(count, GFP_KERNEL);
218 ret = soc_codec_reg_show(codec, buf, count, *ppos);
220 if (copy_to_user(user_buf, buf, ret)) {
231 static ssize_t codec_reg_write_file(struct file *file,
232 const char __user *user_buf, size_t count, loff_t *ppos)
237 unsigned long reg, value;
238 struct snd_soc_codec *codec = file->private_data;
240 buf_size = min(count, (sizeof(buf)-1));
241 if (copy_from_user(buf, user_buf, buf_size))
245 while (*start == ' ')
247 reg = simple_strtoul(start, &start, 16);
248 while (*start == ' ')
250 if (strict_strtoul(start, 16, &value))
253 /* Userspace has been fiddling around behind the kernel's back */
254 add_taint(TAINT_USER);
256 snd_soc_write(codec, reg, value);
260 static const struct file_operations codec_reg_fops = {
262 .read = codec_reg_read_file,
263 .write = codec_reg_write_file,
264 .llseek = default_llseek,
267 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
269 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
271 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
273 if (!codec->debugfs_codec_root) {
274 dev_warn(codec->dev, "Failed to create codec debugfs directory\n");
278 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
280 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
283 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
284 codec->debugfs_codec_root,
285 codec, &codec_reg_fops);
286 if (!codec->debugfs_reg)
287 dev_warn(codec->dev, "Failed to create codec register debugfs file\n");
289 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
292 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
294 debugfs_remove_recursive(codec->debugfs_codec_root);
297 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
299 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
301 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
303 if (!platform->debugfs_platform_root) {
304 dev_warn(platform->dev,
305 "Failed to create platform debugfs directory\n");
309 snd_soc_dapm_debugfs_init(&platform->dapm,
310 platform->debugfs_platform_root);
313 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
315 debugfs_remove_recursive(platform->debugfs_platform_root);
318 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
319 size_t count, loff_t *ppos)
321 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
322 ssize_t len, ret = 0;
323 struct snd_soc_codec *codec;
328 list_for_each_entry(codec, &codec_list, list) {
329 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
333 if (ret > PAGE_SIZE) {
340 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
347 static const struct file_operations codec_list_fops = {
348 .read = codec_list_read_file,
349 .llseek = default_llseek,/* read accesses f_pos */
352 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
353 size_t count, loff_t *ppos)
355 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
356 ssize_t len, ret = 0;
357 struct snd_soc_dai *dai;
362 list_for_each_entry(dai, &dai_list, list) {
363 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
366 if (ret > PAGE_SIZE) {
372 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
379 static const struct file_operations dai_list_fops = {
380 .read = dai_list_read_file,
381 .llseek = default_llseek,/* read accesses f_pos */
384 static ssize_t platform_list_read_file(struct file *file,
385 char __user *user_buf,
386 size_t count, loff_t *ppos)
388 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
389 ssize_t len, ret = 0;
390 struct snd_soc_platform *platform;
395 list_for_each_entry(platform, &platform_list, list) {
396 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
400 if (ret > PAGE_SIZE) {
406 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
413 static const struct file_operations platform_list_fops = {
414 .read = platform_list_read_file,
415 .llseek = default_llseek,/* read accesses f_pos */
418 static void soc_init_card_debugfs(struct snd_soc_card *card)
420 card->debugfs_card_root = debugfs_create_dir(card->name,
421 snd_soc_debugfs_root);
422 if (!card->debugfs_card_root) {
424 "ASoC: Failed to create card debugfs directory\n");
428 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
429 card->debugfs_card_root,
431 if (!card->debugfs_pop_time)
433 "Failed to create pop time debugfs file\n");
436 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
438 debugfs_remove_recursive(card->debugfs_card_root);
443 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
447 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
451 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
455 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
459 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
463 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
468 struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
469 const char *dai_link, int stream)
473 for (i = 0; i < card->num_links; i++) {
474 if (card->rtd[i].dai_link->no_pcm &&
475 !strcmp(card->rtd[i].dai_link->name, dai_link))
476 return card->rtd[i].pcm->streams[stream].substream;
478 dev_dbg(card->dev, "failed to find dai link %s\n", dai_link);
481 EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream);
483 struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
484 const char *dai_link)
488 for (i = 0; i < card->num_links; i++) {
489 if (!strcmp(card->rtd[i].dai_link->name, dai_link))
490 return &card->rtd[i];
492 dev_dbg(card->dev, "failed to find rtd %s\n", dai_link);
495 EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime);
497 #ifdef CONFIG_SND_SOC_AC97_BUS
498 /* unregister ac97 codec */
499 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
501 if (codec->ac97->dev.bus)
502 device_unregister(&codec->ac97->dev);
506 /* stop no dev release warning */
507 static void soc_ac97_device_release(struct device *dev){}
509 /* register ac97 codec to bus */
510 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
514 codec->ac97->dev.bus = &ac97_bus_type;
515 codec->ac97->dev.parent = codec->card->dev;
516 codec->ac97->dev.release = soc_ac97_device_release;
518 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
519 codec->card->snd_card->number, 0, codec->name);
520 err = device_register(&codec->ac97->dev);
522 snd_printk(KERN_ERR "Can't register ac97 bus\n");
523 codec->ac97->dev.bus = NULL;
530 #ifdef CONFIG_PM_SLEEP
531 /* powers down audio subsystem for suspend */
532 int snd_soc_suspend(struct device *dev)
534 struct snd_soc_card *card = dev_get_drvdata(dev);
535 struct snd_soc_codec *codec;
538 /* If the initialization of this soc device failed, there is no codec
539 * associated with it. Just bail out in this case.
541 if (list_empty(&card->codec_dev_list))
544 /* Due to the resume being scheduled into a workqueue we could
545 * suspend before that's finished - wait for it to complete.
547 snd_power_lock(card->snd_card);
548 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
549 snd_power_unlock(card->snd_card);
551 /* we're going to block userspace touching us until resume completes */
552 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
554 /* mute any active DACs */
555 for (i = 0; i < card->num_rtd; i++) {
556 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
557 struct snd_soc_dai_driver *drv = dai->driver;
559 if (card->rtd[i].dai_link->ignore_suspend)
562 if (drv->ops->digital_mute && dai->playback_active)
563 drv->ops->digital_mute(dai, 1);
566 /* suspend all pcms */
567 for (i = 0; i < card->num_rtd; i++) {
568 if (card->rtd[i].dai_link->ignore_suspend)
571 snd_pcm_suspend_all(card->rtd[i].pcm);
574 if (card->suspend_pre)
575 card->suspend_pre(card);
577 for (i = 0; i < card->num_rtd; i++) {
578 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
579 struct snd_soc_platform *platform = card->rtd[i].platform;
581 if (card->rtd[i].dai_link->ignore_suspend)
584 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
585 cpu_dai->driver->suspend(cpu_dai);
586 if (platform->driver->suspend && !platform->suspended) {
587 platform->driver->suspend(cpu_dai);
588 platform->suspended = 1;
592 /* close any waiting streams and save state */
593 for (i = 0; i < card->num_rtd; i++) {
594 flush_delayed_work(&card->rtd[i].delayed_work);
595 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
598 for (i = 0; i < card->num_rtd; i++) {
600 if (card->rtd[i].dai_link->ignore_suspend)
603 snd_soc_dapm_stream_event(&card->rtd[i],
604 SNDRV_PCM_STREAM_PLAYBACK,
605 SND_SOC_DAPM_STREAM_SUSPEND);
607 snd_soc_dapm_stream_event(&card->rtd[i],
608 SNDRV_PCM_STREAM_CAPTURE,
609 SND_SOC_DAPM_STREAM_SUSPEND);
612 /* Recheck all analogue paths too */
613 dapm_mark_io_dirty(&card->dapm);
614 snd_soc_dapm_sync(&card->dapm);
616 /* suspend all CODECs */
617 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
618 /* If there are paths active then the CODEC will be held with
619 * bias _ON and should not be suspended. */
620 if (!codec->suspended && codec->driver->suspend) {
621 switch (codec->dapm.bias_level) {
622 case SND_SOC_BIAS_STANDBY:
624 * If the CODEC is capable of idle
625 * bias off then being in STANDBY
626 * means it's doing something,
627 * otherwise fall through.
629 if (codec->dapm.idle_bias_off) {
631 "idle_bias_off CODEC on over suspend\n");
634 case SND_SOC_BIAS_OFF:
635 codec->driver->suspend(codec);
636 codec->suspended = 1;
637 codec->cache_sync = 1;
638 if (codec->using_regmap)
639 regcache_mark_dirty(codec->control_data);
642 dev_dbg(codec->dev, "CODEC is on over suspend\n");
648 for (i = 0; i < card->num_rtd; i++) {
649 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
651 if (card->rtd[i].dai_link->ignore_suspend)
654 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
655 cpu_dai->driver->suspend(cpu_dai);
658 if (card->suspend_post)
659 card->suspend_post(card);
663 EXPORT_SYMBOL_GPL(snd_soc_suspend);
665 /* deferred resume work, so resume can complete before we finished
666 * setting our codec back up, which can be very slow on I2C
668 static void soc_resume_deferred(struct work_struct *work)
670 struct snd_soc_card *card =
671 container_of(work, struct snd_soc_card, deferred_resume_work);
672 struct snd_soc_codec *codec;
675 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
676 * so userspace apps are blocked from touching us
679 dev_dbg(card->dev, "starting resume work\n");
681 /* Bring us up into D2 so that DAPM starts enabling things */
682 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
684 if (card->resume_pre)
685 card->resume_pre(card);
687 /* resume AC97 DAIs */
688 for (i = 0; i < card->num_rtd; i++) {
689 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
691 if (card->rtd[i].dai_link->ignore_suspend)
694 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
695 cpu_dai->driver->resume(cpu_dai);
698 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
699 /* If the CODEC was idle over suspend then it will have been
700 * left with bias OFF or STANDBY and suspended so we must now
701 * resume. Otherwise the suspend was suppressed.
703 if (codec->driver->resume && codec->suspended) {
704 switch (codec->dapm.bias_level) {
705 case SND_SOC_BIAS_STANDBY:
706 case SND_SOC_BIAS_OFF:
707 codec->driver->resume(codec);
708 codec->suspended = 0;
711 dev_dbg(codec->dev, "CODEC was on over suspend\n");
717 for (i = 0; i < card->num_rtd; i++) {
719 if (card->rtd[i].dai_link->ignore_suspend)
722 snd_soc_dapm_stream_event(&card->rtd[i],
723 SNDRV_PCM_STREAM_PLAYBACK,
724 SND_SOC_DAPM_STREAM_RESUME);
726 snd_soc_dapm_stream_event(&card->rtd[i],
727 SNDRV_PCM_STREAM_CAPTURE,
728 SND_SOC_DAPM_STREAM_RESUME);
731 /* unmute any active DACs */
732 for (i = 0; i < card->num_rtd; i++) {
733 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
734 struct snd_soc_dai_driver *drv = dai->driver;
736 if (card->rtd[i].dai_link->ignore_suspend)
739 if (drv->ops->digital_mute && dai->playback_active)
740 drv->ops->digital_mute(dai, 0);
743 for (i = 0; i < card->num_rtd; i++) {
744 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
745 struct snd_soc_platform *platform = card->rtd[i].platform;
747 if (card->rtd[i].dai_link->ignore_suspend)
750 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
751 cpu_dai->driver->resume(cpu_dai);
752 if (platform->driver->resume && platform->suspended) {
753 platform->driver->resume(cpu_dai);
754 platform->suspended = 0;
758 if (card->resume_post)
759 card->resume_post(card);
761 dev_dbg(card->dev, "resume work completed\n");
763 /* userspace can access us now we are back as we were before */
764 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
766 /* Recheck all analogue paths too */
767 dapm_mark_io_dirty(&card->dapm);
768 snd_soc_dapm_sync(&card->dapm);
771 /* powers up audio subsystem after a suspend */
772 int snd_soc_resume(struct device *dev)
774 struct snd_soc_card *card = dev_get_drvdata(dev);
775 int i, ac97_control = 0;
777 /* If the initialization of this soc device failed, there is no codec
778 * associated with it. Just bail out in this case.
780 if (list_empty(&card->codec_dev_list))
783 /* AC97 devices might have other drivers hanging off them so
784 * need to resume immediately. Other drivers don't have that
785 * problem and may take a substantial amount of time to resume
786 * due to I/O costs and anti-pop so handle them out of line.
788 for (i = 0; i < card->num_rtd; i++) {
789 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
790 ac97_control |= cpu_dai->driver->ac97_control;
793 dev_dbg(dev, "Resuming AC97 immediately\n");
794 soc_resume_deferred(&card->deferred_resume_work);
796 dev_dbg(dev, "Scheduling resume work\n");
797 if (!schedule_work(&card->deferred_resume_work))
798 dev_err(dev, "resume work item may be lost\n");
803 EXPORT_SYMBOL_GPL(snd_soc_resume);
805 #define snd_soc_suspend NULL
806 #define snd_soc_resume NULL
809 static const struct snd_soc_dai_ops null_dai_ops = {
812 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
814 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
815 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
816 struct snd_soc_codec *codec;
817 struct snd_soc_platform *platform;
818 struct snd_soc_dai *codec_dai, *cpu_dai;
819 const char *platform_name;
821 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
823 /* Find CPU DAI from registered DAIs*/
824 list_for_each_entry(cpu_dai, &dai_list, list) {
825 if (dai_link->cpu_of_node &&
826 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
828 if (dai_link->cpu_name &&
829 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
831 if (dai_link->cpu_dai_name &&
832 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
835 rtd->cpu_dai = cpu_dai;
839 dev_err(card->dev, "CPU DAI %s not registered\n",
840 dai_link->cpu_dai_name);
841 return -EPROBE_DEFER;
844 /* Find CODEC from registered CODECs */
845 list_for_each_entry(codec, &codec_list, list) {
846 if (dai_link->codec_of_node) {
847 if (codec->dev->of_node != dai_link->codec_of_node)
850 if (strcmp(codec->name, dai_link->codec_name))
857 * CODEC found, so find CODEC DAI from registered DAIs from
860 list_for_each_entry(codec_dai, &dai_list, list) {
861 if (codec->dev == codec_dai->dev &&
862 !strcmp(codec_dai->name,
863 dai_link->codec_dai_name)) {
865 rtd->codec_dai = codec_dai;
869 if (!rtd->codec_dai) {
870 dev_err(card->dev, "CODEC DAI %s not registered\n",
871 dai_link->codec_dai_name);
872 return -EPROBE_DEFER;
877 dev_err(card->dev, "CODEC %s not registered\n",
878 dai_link->codec_name);
879 return -EPROBE_DEFER;
882 /* if there's no platform we match on the empty platform */
883 platform_name = dai_link->platform_name;
884 if (!platform_name && !dai_link->platform_of_node)
885 platform_name = "snd-soc-dummy";
887 /* find one from the set of registered platforms */
888 list_for_each_entry(platform, &platform_list, list) {
889 if (dai_link->platform_of_node) {
890 if (platform->dev->of_node !=
891 dai_link->platform_of_node)
894 if (strcmp(platform->name, platform_name))
898 rtd->platform = platform;
900 if (!rtd->platform) {
901 dev_err(card->dev, "platform %s not registered\n",
902 dai_link->platform_name);
903 return -EPROBE_DEFER;
911 static int soc_remove_platform(struct snd_soc_platform *platform)
915 if (platform->driver->remove) {
916 ret = platform->driver->remove(platform);
918 pr_err("asoc: failed to remove %s: %d\n",
919 platform->name, ret);
922 /* Make sure all DAPM widgets are freed */
923 snd_soc_dapm_free(&platform->dapm);
925 soc_cleanup_platform_debugfs(platform);
926 platform->probed = 0;
927 list_del(&platform->card_list);
928 module_put(platform->dev->driver->owner);
933 static void soc_remove_codec(struct snd_soc_codec *codec)
937 if (codec->driver->remove) {
938 err = codec->driver->remove(codec);
941 "asoc: failed to remove %s: %d\n",
945 /* Make sure all DAPM widgets are freed */
946 snd_soc_dapm_free(&codec->dapm);
948 soc_cleanup_codec_debugfs(codec);
950 list_del(&codec->card_list);
951 module_put(codec->dev->driver->owner);
954 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
956 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
957 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
960 /* unregister the rtd device */
961 if (rtd->dev_registered) {
962 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
963 device_remove_file(rtd->dev, &dev_attr_codec_reg);
964 device_unregister(rtd->dev);
965 rtd->dev_registered = 0;
968 /* remove the CODEC DAI */
969 if (codec_dai && codec_dai->probed &&
970 codec_dai->driver->remove_order == order) {
971 if (codec_dai->driver->remove) {
972 err = codec_dai->driver->remove(codec_dai);
974 pr_err("asoc: failed to remove %s: %d\n",
975 codec_dai->name, err);
977 codec_dai->probed = 0;
978 list_del(&codec_dai->card_list);
981 /* remove the cpu_dai */
982 if (cpu_dai && cpu_dai->probed &&
983 cpu_dai->driver->remove_order == order) {
984 if (cpu_dai->driver->remove) {
985 err = cpu_dai->driver->remove(cpu_dai);
987 pr_err("asoc: failed to remove %s: %d\n",
991 list_del(&cpu_dai->card_list);
993 if (!cpu_dai->codec) {
994 snd_soc_dapm_free(&cpu_dai->dapm);
995 module_put(cpu_dai->dev->driver->owner);
1000 static void soc_remove_link_components(struct snd_soc_card *card, int num,
1003 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1004 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1005 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1006 struct snd_soc_platform *platform = rtd->platform;
1007 struct snd_soc_codec *codec;
1009 /* remove the platform */
1010 if (platform && platform->probed &&
1011 platform->driver->remove_order == order) {
1012 soc_remove_platform(platform);
1015 /* remove the CODEC-side CODEC */
1017 codec = codec_dai->codec;
1018 if (codec && codec->probed &&
1019 codec->driver->remove_order == order)
1020 soc_remove_codec(codec);
1023 /* remove any CPU-side CODEC */
1025 codec = cpu_dai->codec;
1026 if (codec && codec->probed &&
1027 codec->driver->remove_order == order)
1028 soc_remove_codec(codec);
1032 static void soc_remove_dai_links(struct snd_soc_card *card)
1036 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1038 for (dai = 0; dai < card->num_rtd; dai++)
1039 soc_remove_link_dais(card, dai, order);
1042 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1044 for (dai = 0; dai < card->num_rtd; dai++)
1045 soc_remove_link_components(card, dai, order);
1051 static void soc_set_name_prefix(struct snd_soc_card *card,
1052 struct snd_soc_codec *codec)
1056 if (card->codec_conf == NULL)
1059 for (i = 0; i < card->num_configs; i++) {
1060 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1061 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1062 codec->name_prefix = map->name_prefix;
1068 static int soc_probe_codec(struct snd_soc_card *card,
1069 struct snd_soc_codec *codec)
1072 const struct snd_soc_codec_driver *driver = codec->driver;
1073 struct snd_soc_dai *dai;
1076 codec->dapm.card = card;
1077 soc_set_name_prefix(card, codec);
1079 if (!try_module_get(codec->dev->driver->owner))
1082 soc_init_codec_debugfs(codec);
1084 if (driver->dapm_widgets)
1085 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1086 driver->num_dapm_widgets);
1088 /* Create DAPM widgets for each DAI stream */
1089 list_for_each_entry(dai, &dai_list, list) {
1090 if (dai->dev != codec->dev)
1093 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1096 codec->dapm.idle_bias_off = driver->idle_bias_off;
1098 if (driver->probe) {
1099 ret = driver->probe(codec);
1102 "asoc: failed to probe CODEC %s: %d\n",
1108 /* If the driver didn't set I/O up try regmap */
1109 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1110 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1112 if (driver->controls)
1113 snd_soc_add_codec_controls(codec, driver->controls,
1114 driver->num_controls);
1115 if (driver->dapm_routes)
1116 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1117 driver->num_dapm_routes);
1119 /* mark codec as probed and add to card codec list */
1121 list_add(&codec->card_list, &card->codec_dev_list);
1122 list_add(&codec->dapm.list, &card->dapm_list);
1127 soc_cleanup_codec_debugfs(codec);
1128 module_put(codec->dev->driver->owner);
1133 static int soc_probe_platform(struct snd_soc_card *card,
1134 struct snd_soc_platform *platform)
1137 const struct snd_soc_platform_driver *driver = platform->driver;
1138 struct snd_soc_dai *dai;
1140 platform->card = card;
1141 platform->dapm.card = card;
1143 if (!try_module_get(platform->dev->driver->owner))
1146 soc_init_platform_debugfs(platform);
1148 if (driver->dapm_widgets)
1149 snd_soc_dapm_new_controls(&platform->dapm,
1150 driver->dapm_widgets, driver->num_dapm_widgets);
1152 /* Create DAPM widgets for each DAI stream */
1153 list_for_each_entry(dai, &dai_list, list) {
1154 if (dai->dev != platform->dev)
1157 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1160 platform->dapm.idle_bias_off = 1;
1162 if (driver->probe) {
1163 ret = driver->probe(platform);
1165 dev_err(platform->dev,
1166 "asoc: failed to probe platform %s: %d\n",
1167 platform->name, ret);
1172 if (driver->controls)
1173 snd_soc_add_platform_controls(platform, driver->controls,
1174 driver->num_controls);
1175 if (driver->dapm_routes)
1176 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1177 driver->num_dapm_routes);
1179 /* mark platform as probed and add to card platform list */
1180 platform->probed = 1;
1181 list_add(&platform->card_list, &card->platform_dev_list);
1182 list_add(&platform->dapm.list, &card->dapm_list);
1187 soc_cleanup_platform_debugfs(platform);
1188 module_put(platform->dev->driver->owner);
1193 static void rtd_release(struct device *dev)
1198 static int soc_post_component_init(struct snd_soc_card *card,
1199 struct snd_soc_codec *codec,
1200 int num, int dailess)
1202 struct snd_soc_dai_link *dai_link = NULL;
1203 struct snd_soc_aux_dev *aux_dev = NULL;
1204 struct snd_soc_pcm_runtime *rtd;
1205 const char *temp, *name;
1209 dai_link = &card->dai_link[num];
1210 rtd = &card->rtd[num];
1211 name = dai_link->name;
1213 aux_dev = &card->aux_dev[num];
1214 rtd = &card->rtd_aux[num];
1215 name = aux_dev->name;
1219 /* Make sure all DAPM widgets are instantiated */
1220 snd_soc_dapm_new_widgets(&codec->dapm);
1222 /* machine controls, routes and widgets are not prefixed */
1223 temp = codec->name_prefix;
1224 codec->name_prefix = NULL;
1226 /* do machine specific initialization */
1227 if (!dailess && dai_link->init)
1228 ret = dai_link->init(rtd);
1229 else if (dailess && aux_dev->init)
1230 ret = aux_dev->init(&codec->dapm);
1232 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1235 codec->name_prefix = temp;
1237 /* register the rtd device */
1240 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1243 device_initialize(rtd->dev);
1244 rtd->dev->parent = card->dev;
1245 rtd->dev->release = rtd_release;
1246 rtd->dev->init_name = name;
1247 dev_set_drvdata(rtd->dev, rtd);
1248 mutex_init(&rtd->pcm_mutex);
1249 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1250 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1251 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1252 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1253 ret = device_add(rtd->dev);
1256 "asoc: failed to register runtime device: %d\n", ret);
1259 rtd->dev_registered = 1;
1261 /* add DAPM sysfs entries for this codec */
1262 ret = snd_soc_dapm_sys_add(rtd->dev);
1265 "asoc: failed to add codec dapm sysfs entries: %d\n",
1268 /* add codec sysfs entries */
1269 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1272 "asoc: failed to add codec sysfs files: %d\n", ret);
1274 #ifdef CONFIG_DEBUG_FS
1275 /* add DPCM sysfs entries */
1276 if (!dailess && !dai_link->dynamic)
1279 ret = soc_dpcm_debugfs_add(rtd);
1281 dev_err(rtd->dev, "asoc: failed to add dpcm sysfs entries: %d\n", ret);
1288 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1291 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1292 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1293 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1294 struct snd_soc_platform *platform = rtd->platform;
1297 /* probe the CPU-side component, if it is a CODEC */
1298 if (cpu_dai->codec &&
1299 !cpu_dai->codec->probed &&
1300 cpu_dai->codec->driver->probe_order == order) {
1301 ret = soc_probe_codec(card, cpu_dai->codec);
1306 /* probe the CODEC-side component */
1307 if (!codec_dai->codec->probed &&
1308 codec_dai->codec->driver->probe_order == order) {
1309 ret = soc_probe_codec(card, codec_dai->codec);
1314 /* probe the platform */
1315 if (!platform->probed &&
1316 platform->driver->probe_order == order) {
1317 ret = soc_probe_platform(card, platform);
1325 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1327 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1328 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1329 struct snd_soc_codec *codec = rtd->codec;
1330 struct snd_soc_platform *platform = rtd->platform;
1331 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1332 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1333 struct snd_soc_dapm_widget *play_w, *capture_w;
1336 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1337 card->name, num, order);
1339 /* config components */
1340 cpu_dai->platform = platform;
1341 codec_dai->card = card;
1342 cpu_dai->card = card;
1344 /* set default power off timeout */
1345 rtd->pmdown_time = pmdown_time;
1347 /* probe the cpu_dai */
1348 if (!cpu_dai->probed &&
1349 cpu_dai->driver->probe_order == order) {
1350 if (!cpu_dai->codec) {
1351 cpu_dai->dapm.card = card;
1352 if (!try_module_get(cpu_dai->dev->driver->owner))
1355 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1356 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1359 if (cpu_dai->driver->probe) {
1360 ret = cpu_dai->driver->probe(cpu_dai);
1362 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1363 cpu_dai->name, ret);
1364 module_put(cpu_dai->dev->driver->owner);
1368 cpu_dai->probed = 1;
1369 /* mark cpu_dai as probed and add to card dai list */
1370 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1373 /* probe the CODEC DAI */
1374 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1375 if (codec_dai->driver->probe) {
1376 ret = codec_dai->driver->probe(codec_dai);
1378 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1379 codec_dai->name, ret);
1384 /* mark codec_dai as probed and add to card dai list */
1385 codec_dai->probed = 1;
1386 list_add(&codec_dai->card_list, &card->dai_dev_list);
1389 /* complete DAI probe during last probe */
1390 if (order != SND_SOC_COMP_ORDER_LAST)
1393 ret = soc_post_component_init(card, codec, num, 0);
1397 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1399 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
1401 if (cpu_dai->driver->compress_dai) {
1402 /*create compress_device"*/
1403 ret = soc_new_compress(rtd, num);
1405 pr_err("asoc: can't create compress %s\n",
1406 dai_link->stream_name);
1411 if (!dai_link->params) {
1412 /* create the pcm */
1413 ret = soc_new_pcm(rtd, num);
1415 pr_err("asoc: can't create pcm %s :%d\n",
1416 dai_link->stream_name, ret);
1420 /* link the DAI widgets */
1421 play_w = codec_dai->playback_widget;
1422 capture_w = cpu_dai->capture_widget;
1423 if (play_w && capture_w) {
1424 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1427 dev_err(card->dev, "Can't link %s to %s: %d\n",
1428 play_w->name, capture_w->name, ret);
1433 play_w = cpu_dai->playback_widget;
1434 capture_w = codec_dai->capture_widget;
1435 if (play_w && capture_w) {
1436 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1439 dev_err(card->dev, "Can't link %s to %s: %d\n",
1440 play_w->name, capture_w->name, ret);
1447 /* add platform data for AC97 devices */
1448 if (rtd->codec_dai->driver->ac97_control)
1449 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1454 #ifdef CONFIG_SND_SOC_AC97_BUS
1455 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1459 /* Only instantiate AC97 if not already done by the adaptor
1460 * for the generic AC97 subsystem.
1462 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1464 * It is possible that the AC97 device is already registered to
1465 * the device subsystem. This happens when the device is created
1466 * via snd_ac97_mixer(). Currently only SoC codec that does so
1467 * is the generic AC97 glue but others migh emerge.
1469 * In those cases we don't try to register the device again.
1471 if (!rtd->codec->ac97_created)
1474 ret = soc_ac97_dev_register(rtd->codec);
1476 pr_err("asoc: AC97 device register failed:%d\n", ret);
1480 rtd->codec->ac97_registered = 1;
1485 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1487 if (codec->ac97_registered) {
1488 soc_ac97_dev_unregister(codec);
1489 codec->ac97_registered = 0;
1494 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1496 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1497 struct snd_soc_codec *codec;
1499 /* find CODEC from registered CODECs*/
1500 list_for_each_entry(codec, &codec_list, list) {
1501 if (!strcmp(codec->name, aux_dev->codec_name))
1505 dev_err(card->dev, "%s not registered\n", aux_dev->codec_name);
1507 return -EPROBE_DEFER;
1510 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1512 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1513 struct snd_soc_codec *codec;
1516 /* find CODEC from registered CODECs*/
1517 list_for_each_entry(codec, &codec_list, list) {
1518 if (!strcmp(codec->name, aux_dev->codec_name)) {
1519 if (codec->probed) {
1521 "asoc: codec already probed");
1528 /* codec not found */
1529 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1530 return -EPROBE_DEFER;
1533 ret = soc_probe_codec(card, codec);
1537 ret = soc_post_component_init(card, codec, num, 1);
1543 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1545 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1546 struct snd_soc_codec *codec = rtd->codec;
1548 /* unregister the rtd device */
1549 if (rtd->dev_registered) {
1550 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1551 device_del(rtd->dev);
1552 rtd->dev_registered = 0;
1555 if (codec && codec->probed)
1556 soc_remove_codec(codec);
1559 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1560 enum snd_soc_compress_type compress_type)
1564 if (codec->cache_init)
1567 /* override the compress_type if necessary */
1568 if (compress_type && codec->compress_type != compress_type)
1569 codec->compress_type = compress_type;
1570 ret = snd_soc_cache_init(codec);
1572 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1576 codec->cache_init = 1;
1580 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1582 struct snd_soc_codec *codec;
1583 struct snd_soc_codec_conf *codec_conf;
1584 enum snd_soc_compress_type compress_type;
1585 struct snd_soc_dai_link *dai_link;
1586 int ret, i, order, dai_fmt;
1588 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1591 for (i = 0; i < card->num_links; i++) {
1592 ret = soc_bind_dai_link(card, i);
1597 /* check aux_devs too */
1598 for (i = 0; i < card->num_aux_devs; i++) {
1599 ret = soc_check_aux_dev(card, i);
1604 /* initialize the register cache for each available codec */
1605 list_for_each_entry(codec, &codec_list, list) {
1606 if (codec->cache_init)
1608 /* by default we don't override the compress_type */
1610 /* check to see if we need to override the compress_type */
1611 for (i = 0; i < card->num_configs; ++i) {
1612 codec_conf = &card->codec_conf[i];
1613 if (!strcmp(codec->name, codec_conf->dev_name)) {
1614 compress_type = codec_conf->compress_type;
1615 if (compress_type && compress_type
1616 != codec->compress_type)
1620 ret = snd_soc_init_codec_cache(codec, compress_type);
1625 /* card bind complete so register a sound card */
1626 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1627 card->owner, 0, &card->snd_card);
1629 pr_err("asoc: can't create sound card for card %s: %d\n",
1633 card->snd_card->dev = card->dev;
1635 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1636 card->dapm.dev = card->dev;
1637 card->dapm.card = card;
1638 list_add(&card->dapm.list, &card->dapm_list);
1640 #ifdef CONFIG_DEBUG_FS
1641 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1644 #ifdef CONFIG_PM_SLEEP
1645 /* deferred resume work */
1646 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1649 if (card->dapm_widgets)
1650 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1651 card->num_dapm_widgets);
1653 /* initialise the sound card only once */
1655 ret = card->probe(card);
1657 goto card_probe_error;
1660 /* probe all components used by DAI links on this card */
1661 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1663 for (i = 0; i < card->num_links; i++) {
1664 ret = soc_probe_link_components(card, i, order);
1666 pr_err("asoc: failed to instantiate card %s: %d\n",
1673 /* probe all DAI links on this card */
1674 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1676 for (i = 0; i < card->num_links; i++) {
1677 ret = soc_probe_link_dais(card, i, order);
1679 pr_err("asoc: failed to instantiate card %s: %d\n",
1686 for (i = 0; i < card->num_aux_devs; i++) {
1687 ret = soc_probe_aux_dev(card, i);
1689 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1691 goto probe_aux_dev_err;
1695 snd_soc_dapm_link_dai_widgets(card);
1698 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1700 if (card->dapm_routes)
1701 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1702 card->num_dapm_routes);
1704 snd_soc_dapm_new_widgets(&card->dapm);
1706 for (i = 0; i < card->num_links; i++) {
1707 dai_link = &card->dai_link[i];
1708 dai_fmt = dai_link->dai_fmt;
1711 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1713 if (ret != 0 && ret != -ENOTSUPP)
1714 dev_warn(card->rtd[i].codec_dai->dev,
1715 "Failed to set DAI format: %d\n",
1719 /* If this is a regular CPU link there will be a platform */
1721 (dai_link->platform_name || dai_link->platform_of_node)) {
1722 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1724 if (ret != 0 && ret != -ENOTSUPP)
1725 dev_warn(card->rtd[i].cpu_dai->dev,
1726 "Failed to set DAI format: %d\n",
1728 } else if (dai_fmt) {
1729 /* Flip the polarity for the "CPU" end */
1730 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1731 switch (dai_link->dai_fmt &
1732 SND_SOC_DAIFMT_MASTER_MASK) {
1733 case SND_SOC_DAIFMT_CBM_CFM:
1734 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1736 case SND_SOC_DAIFMT_CBM_CFS:
1737 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1739 case SND_SOC_DAIFMT_CBS_CFM:
1740 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1742 case SND_SOC_DAIFMT_CBS_CFS:
1743 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1747 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1749 if (ret != 0 && ret != -ENOTSUPP)
1750 dev_warn(card->rtd[i].cpu_dai->dev,
1751 "Failed to set DAI format: %d\n",
1756 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1758 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1759 "%s", card->long_name ? card->long_name : card->name);
1760 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1761 "%s", card->driver_name ? card->driver_name : card->name);
1762 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1763 switch (card->snd_card->driver[i]) {
1769 if (!isalnum(card->snd_card->driver[i]))
1770 card->snd_card->driver[i] = '_';
1775 if (card->late_probe) {
1776 ret = card->late_probe(card);
1778 dev_err(card->dev, "%s late_probe() failed: %d\n",
1780 goto probe_aux_dev_err;
1784 snd_soc_dapm_new_widgets(&card->dapm);
1786 if (card->fully_routed)
1787 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1788 snd_soc_dapm_auto_nc_codec_pins(codec);
1790 ret = snd_card_register(card->snd_card);
1792 pr_err("asoc: failed to register soundcard for %s: %d\n",
1794 goto probe_aux_dev_err;
1797 #ifdef CONFIG_SND_SOC_AC97_BUS
1798 /* register any AC97 codecs */
1799 for (i = 0; i < card->num_rtd; i++) {
1800 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1802 pr_err("asoc: failed to register AC97 %s: %d\n",
1805 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1806 goto probe_aux_dev_err;
1811 card->instantiated = 1;
1812 snd_soc_dapm_sync(&card->dapm);
1813 mutex_unlock(&card->mutex);
1818 for (i = 0; i < card->num_aux_devs; i++)
1819 soc_remove_aux_dev(card, i);
1822 soc_remove_dai_links(card);
1828 snd_card_free(card->snd_card);
1831 mutex_unlock(&card->mutex);
1836 /* probes a new socdev */
1837 static int soc_probe(struct platform_device *pdev)
1839 struct snd_soc_card *card = platform_get_drvdata(pdev);
1842 * no card, so machine driver should be registering card
1843 * we should not be here in that case so ret error
1848 dev_warn(&pdev->dev,
1849 "ASoC machine %s should use snd_soc_register_card()\n",
1852 /* Bodge while we unpick instantiation */
1853 card->dev = &pdev->dev;
1855 return snd_soc_register_card(card);
1858 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1862 /* make sure any delayed work runs */
1863 for (i = 0; i < card->num_rtd; i++) {
1864 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1865 flush_delayed_work(&rtd->delayed_work);
1868 /* remove auxiliary devices */
1869 for (i = 0; i < card->num_aux_devs; i++)
1870 soc_remove_aux_dev(card, i);
1872 /* remove and free each DAI */
1873 soc_remove_dai_links(card);
1875 soc_cleanup_card_debugfs(card);
1877 /* remove the card */
1881 snd_soc_dapm_free(&card->dapm);
1883 snd_card_free(card->snd_card);
1888 /* removes a socdev */
1889 static int soc_remove(struct platform_device *pdev)
1891 struct snd_soc_card *card = platform_get_drvdata(pdev);
1893 snd_soc_unregister_card(card);
1897 int snd_soc_poweroff(struct device *dev)
1899 struct snd_soc_card *card = dev_get_drvdata(dev);
1902 if (!card->instantiated)
1905 /* Flush out pmdown_time work - we actually do want to run it
1906 * now, we're shutting down so no imminent restart. */
1907 for (i = 0; i < card->num_rtd; i++) {
1908 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1909 flush_delayed_work(&rtd->delayed_work);
1912 snd_soc_dapm_shutdown(card);
1916 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1918 const struct dev_pm_ops snd_soc_pm_ops = {
1919 .suspend = snd_soc_suspend,
1920 .resume = snd_soc_resume,
1921 .freeze = snd_soc_suspend,
1922 .thaw = snd_soc_resume,
1923 .poweroff = snd_soc_poweroff,
1924 .restore = snd_soc_resume,
1926 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1928 /* ASoC platform driver */
1929 static struct platform_driver soc_driver = {
1931 .name = "soc-audio",
1932 .owner = THIS_MODULE,
1933 .pm = &snd_soc_pm_ops,
1936 .remove = soc_remove,
1940 * snd_soc_codec_volatile_register: Report if a register is volatile.
1942 * @codec: CODEC to query.
1943 * @reg: Register to query.
1945 * Boolean function indiciating if a CODEC register is volatile.
1947 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1950 if (codec->volatile_register)
1951 return codec->volatile_register(codec, reg);
1955 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1958 * snd_soc_codec_readable_register: Report if a register is readable.
1960 * @codec: CODEC to query.
1961 * @reg: Register to query.
1963 * Boolean function indicating if a CODEC register is readable.
1965 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1968 if (codec->readable_register)
1969 return codec->readable_register(codec, reg);
1973 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1976 * snd_soc_codec_writable_register: Report if a register is writable.
1978 * @codec: CODEC to query.
1979 * @reg: Register to query.
1981 * Boolean function indicating if a CODEC register is writable.
1983 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1986 if (codec->writable_register)
1987 return codec->writable_register(codec, reg);
1991 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1993 int snd_soc_platform_read(struct snd_soc_platform *platform,
1998 if (!platform->driver->read) {
1999 dev_err(platform->dev, "platform has no read back\n");
2003 ret = platform->driver->read(platform, reg);
2004 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
2005 trace_snd_soc_preg_read(platform, reg, ret);
2009 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
2011 int snd_soc_platform_write(struct snd_soc_platform *platform,
2012 unsigned int reg, unsigned int val)
2014 if (!platform->driver->write) {
2015 dev_err(platform->dev, "platform has no write back\n");
2019 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2020 trace_snd_soc_preg_write(platform, reg, val);
2021 return platform->driver->write(platform, reg, val);
2023 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2026 * snd_soc_new_ac97_codec - initailise AC97 device
2027 * @codec: audio codec
2028 * @ops: AC97 bus operations
2029 * @num: AC97 codec number
2031 * Initialises AC97 codec resources for use by ad-hoc devices only.
2033 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2034 struct snd_ac97_bus_ops *ops, int num)
2036 mutex_lock(&codec->mutex);
2038 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2039 if (codec->ac97 == NULL) {
2040 mutex_unlock(&codec->mutex);
2044 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2045 if (codec->ac97->bus == NULL) {
2048 mutex_unlock(&codec->mutex);
2052 codec->ac97->bus->ops = ops;
2053 codec->ac97->num = num;
2056 * Mark the AC97 device to be created by us. This way we ensure that the
2057 * device will be registered with the device subsystem later on.
2059 codec->ac97_created = 1;
2061 mutex_unlock(&codec->mutex);
2064 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2067 * snd_soc_free_ac97_codec - free AC97 codec device
2068 * @codec: audio codec
2070 * Frees AC97 codec device resources.
2072 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2074 mutex_lock(&codec->mutex);
2075 #ifdef CONFIG_SND_SOC_AC97_BUS
2076 soc_unregister_ac97_dai_link(codec);
2078 kfree(codec->ac97->bus);
2081 codec->ac97_created = 0;
2082 mutex_unlock(&codec->mutex);
2084 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2086 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2090 ret = codec->read(codec, reg);
2091 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2092 trace_snd_soc_reg_read(codec, reg, ret);
2096 EXPORT_SYMBOL_GPL(snd_soc_read);
2098 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2099 unsigned int reg, unsigned int val)
2101 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2102 trace_snd_soc_reg_write(codec, reg, val);
2103 return codec->write(codec, reg, val);
2105 EXPORT_SYMBOL_GPL(snd_soc_write);
2107 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2108 unsigned int reg, const void *data, size_t len)
2110 return codec->bulk_write_raw(codec, reg, data, len);
2112 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2115 * snd_soc_update_bits - update codec register bits
2116 * @codec: audio codec
2117 * @reg: codec register
2118 * @mask: register mask
2121 * Writes new register value.
2123 * Returns 1 for change, 0 for no change, or negative error code.
2125 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2126 unsigned int mask, unsigned int value)
2129 unsigned int old, new;
2132 if (codec->using_regmap) {
2133 ret = regmap_update_bits_check(codec->control_data, reg,
2134 mask, value, &change);
2136 ret = snd_soc_read(codec, reg);
2141 new = (old & ~mask) | (value & mask);
2142 change = old != new;
2144 ret = snd_soc_write(codec, reg, new);
2152 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2155 * snd_soc_update_bits_locked - update codec register bits
2156 * @codec: audio codec
2157 * @reg: codec register
2158 * @mask: register mask
2161 * Writes new register value, and takes the codec mutex.
2163 * Returns 1 for change else 0.
2165 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2166 unsigned short reg, unsigned int mask,
2171 mutex_lock(&codec->mutex);
2172 change = snd_soc_update_bits(codec, reg, mask, value);
2173 mutex_unlock(&codec->mutex);
2177 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2180 * snd_soc_test_bits - test register for change
2181 * @codec: audio codec
2182 * @reg: codec register
2183 * @mask: register mask
2186 * Tests a register with a new value and checks if the new value is
2187 * different from the old value.
2189 * Returns 1 for change else 0.
2191 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2192 unsigned int mask, unsigned int value)
2195 unsigned int old, new;
2197 old = snd_soc_read(codec, reg);
2198 new = (old & ~mask) | value;
2199 change = old != new;
2203 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2206 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2207 * @substream: the pcm substream
2208 * @hw: the hardware parameters
2210 * Sets the substream runtime hardware parameters.
2212 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2213 const struct snd_pcm_hardware *hw)
2215 struct snd_pcm_runtime *runtime = substream->runtime;
2216 runtime->hw.info = hw->info;
2217 runtime->hw.formats = hw->formats;
2218 runtime->hw.period_bytes_min = hw->period_bytes_min;
2219 runtime->hw.period_bytes_max = hw->period_bytes_max;
2220 runtime->hw.periods_min = hw->periods_min;
2221 runtime->hw.periods_max = hw->periods_max;
2222 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2223 runtime->hw.fifo_size = hw->fifo_size;
2226 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2229 * snd_soc_cnew - create new control
2230 * @_template: control template
2231 * @data: control private data
2232 * @long_name: control long name
2233 * @prefix: control name prefix
2235 * Create a new mixer control from a template control.
2237 * Returns 0 for success, else error.
2239 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2240 void *data, const char *long_name,
2243 struct snd_kcontrol_new template;
2244 struct snd_kcontrol *kcontrol;
2248 memcpy(&template, _template, sizeof(template));
2252 long_name = template.name;
2255 name_len = strlen(long_name) + strlen(prefix) + 2;
2256 name = kmalloc(name_len, GFP_KERNEL);
2260 snprintf(name, name_len, "%s %s", prefix, long_name);
2262 template.name = name;
2264 template.name = long_name;
2267 kcontrol = snd_ctl_new1(&template, data);
2273 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2275 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2276 const struct snd_kcontrol_new *controls, int num_controls,
2277 const char *prefix, void *data)
2281 for (i = 0; i < num_controls; i++) {
2282 const struct snd_kcontrol_new *control = &controls[i];
2283 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2284 control->name, prefix));
2286 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2295 * snd_soc_add_codec_controls - add an array of controls to a codec.
2296 * Convenience function to add a list of controls. Many codecs were
2297 * duplicating this code.
2299 * @codec: codec to add controls to
2300 * @controls: array of controls to add
2301 * @num_controls: number of elements in the array
2303 * Return 0 for success, else error.
2305 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2306 const struct snd_kcontrol_new *controls, int num_controls)
2308 struct snd_card *card = codec->card->snd_card;
2310 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2311 codec->name_prefix, codec);
2313 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2316 * snd_soc_add_platform_controls - add an array of controls to a platform.
2317 * Convenience function to add a list of controls.
2319 * @platform: platform to add controls to
2320 * @controls: array of controls to add
2321 * @num_controls: number of elements in the array
2323 * Return 0 for success, else error.
2325 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2326 const struct snd_kcontrol_new *controls, int num_controls)
2328 struct snd_card *card = platform->card->snd_card;
2330 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2333 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2336 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2337 * Convenience function to add a list of controls.
2339 * @soc_card: SoC card to add controls to
2340 * @controls: array of controls to add
2341 * @num_controls: number of elements in the array
2343 * Return 0 for success, else error.
2345 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2346 const struct snd_kcontrol_new *controls, int num_controls)
2348 struct snd_card *card = soc_card->snd_card;
2350 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2353 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2356 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2357 * Convienience function to add a list of controls.
2359 * @dai: DAI to add controls to
2360 * @controls: array of controls to add
2361 * @num_controls: number of elements in the array
2363 * Return 0 for success, else error.
2365 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2366 const struct snd_kcontrol_new *controls, int num_controls)
2368 struct snd_card *card = dai->card->snd_card;
2370 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2373 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2376 * snd_soc_info_enum_double - enumerated double mixer info callback
2377 * @kcontrol: mixer control
2378 * @uinfo: control element information
2380 * Callback to provide information about a double enumerated
2383 * Returns 0 for success.
2385 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2386 struct snd_ctl_elem_info *uinfo)
2388 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2390 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2391 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2392 uinfo->value.enumerated.items = e->max;
2394 if (uinfo->value.enumerated.item > e->max - 1)
2395 uinfo->value.enumerated.item = e->max - 1;
2396 strcpy(uinfo->value.enumerated.name,
2397 e->texts[uinfo->value.enumerated.item]);
2400 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2403 * snd_soc_get_enum_double - enumerated double mixer get callback
2404 * @kcontrol: mixer control
2405 * @ucontrol: control element information
2407 * Callback to get the value of a double enumerated mixer.
2409 * Returns 0 for success.
2411 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2412 struct snd_ctl_elem_value *ucontrol)
2414 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2415 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2418 val = snd_soc_read(codec, e->reg);
2419 ucontrol->value.enumerated.item[0]
2420 = (val >> e->shift_l) & e->mask;
2421 if (e->shift_l != e->shift_r)
2422 ucontrol->value.enumerated.item[1] =
2423 (val >> e->shift_r) & e->mask;
2427 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2430 * snd_soc_put_enum_double - enumerated double mixer put callback
2431 * @kcontrol: mixer control
2432 * @ucontrol: control element information
2434 * Callback to set the value of a double enumerated mixer.
2436 * Returns 0 for success.
2438 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2439 struct snd_ctl_elem_value *ucontrol)
2441 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2442 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2446 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2448 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2449 mask = e->mask << e->shift_l;
2450 if (e->shift_l != e->shift_r) {
2451 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2453 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2454 mask |= e->mask << e->shift_r;
2457 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2459 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2462 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2463 * @kcontrol: mixer control
2464 * @ucontrol: control element information
2466 * Callback to get the value of a double semi enumerated mixer.
2468 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2469 * used for handling bitfield coded enumeration for example.
2471 * Returns 0 for success.
2473 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2474 struct snd_ctl_elem_value *ucontrol)
2476 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2477 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2478 unsigned int reg_val, val, mux;
2480 reg_val = snd_soc_read(codec, e->reg);
2481 val = (reg_val >> e->shift_l) & e->mask;
2482 for (mux = 0; mux < e->max; mux++) {
2483 if (val == e->values[mux])
2486 ucontrol->value.enumerated.item[0] = mux;
2487 if (e->shift_l != e->shift_r) {
2488 val = (reg_val >> e->shift_r) & e->mask;
2489 for (mux = 0; mux < e->max; mux++) {
2490 if (val == e->values[mux])
2493 ucontrol->value.enumerated.item[1] = mux;
2498 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2501 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2502 * @kcontrol: mixer control
2503 * @ucontrol: control element information
2505 * Callback to set the value of a double semi enumerated mixer.
2507 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2508 * used for handling bitfield coded enumeration for example.
2510 * Returns 0 for success.
2512 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2513 struct snd_ctl_elem_value *ucontrol)
2515 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2516 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2520 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2522 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2523 mask = e->mask << e->shift_l;
2524 if (e->shift_l != e->shift_r) {
2525 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2527 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2528 mask |= e->mask << e->shift_r;
2531 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2533 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2536 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2537 * @kcontrol: mixer control
2538 * @uinfo: control element information
2540 * Callback to provide information about an external enumerated
2543 * Returns 0 for success.
2545 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2546 struct snd_ctl_elem_info *uinfo)
2548 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2550 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2552 uinfo->value.enumerated.items = e->max;
2554 if (uinfo->value.enumerated.item > e->max - 1)
2555 uinfo->value.enumerated.item = e->max - 1;
2556 strcpy(uinfo->value.enumerated.name,
2557 e->texts[uinfo->value.enumerated.item]);
2560 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2563 * snd_soc_info_volsw_ext - external single mixer info callback
2564 * @kcontrol: mixer control
2565 * @uinfo: control element information
2567 * Callback to provide information about a single external mixer control.
2569 * Returns 0 for success.
2571 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2572 struct snd_ctl_elem_info *uinfo)
2574 int max = kcontrol->private_value;
2576 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2577 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2579 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2582 uinfo->value.integer.min = 0;
2583 uinfo->value.integer.max = max;
2586 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2589 * snd_soc_info_volsw - single mixer info callback
2590 * @kcontrol: mixer control
2591 * @uinfo: control element information
2593 * Callback to provide information about a single mixer control, or a double
2594 * mixer control that spans 2 registers.
2596 * Returns 0 for success.
2598 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2599 struct snd_ctl_elem_info *uinfo)
2601 struct soc_mixer_control *mc =
2602 (struct soc_mixer_control *)kcontrol->private_value;
2605 if (!mc->platform_max)
2606 mc->platform_max = mc->max;
2607 platform_max = mc->platform_max;
2609 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2610 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2612 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2614 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2615 uinfo->value.integer.min = 0;
2616 uinfo->value.integer.max = platform_max;
2619 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2622 * snd_soc_get_volsw - single mixer get callback
2623 * @kcontrol: mixer control
2624 * @ucontrol: control element information
2626 * Callback to get the value of a single mixer control, or a double mixer
2627 * control that spans 2 registers.
2629 * Returns 0 for success.
2631 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2632 struct snd_ctl_elem_value *ucontrol)
2634 struct soc_mixer_control *mc =
2635 (struct soc_mixer_control *)kcontrol->private_value;
2636 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2637 unsigned int reg = mc->reg;
2638 unsigned int reg2 = mc->rreg;
2639 unsigned int shift = mc->shift;
2640 unsigned int rshift = mc->rshift;
2642 unsigned int mask = (1 << fls(max)) - 1;
2643 unsigned int invert = mc->invert;
2645 ucontrol->value.integer.value[0] =
2646 (snd_soc_read(codec, reg) >> shift) & mask;
2648 ucontrol->value.integer.value[0] =
2649 max - ucontrol->value.integer.value[0];
2651 if (snd_soc_volsw_is_stereo(mc)) {
2653 ucontrol->value.integer.value[1] =
2654 (snd_soc_read(codec, reg) >> rshift) & mask;
2656 ucontrol->value.integer.value[1] =
2657 (snd_soc_read(codec, reg2) >> shift) & mask;
2659 ucontrol->value.integer.value[1] =
2660 max - ucontrol->value.integer.value[1];
2665 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2668 * snd_soc_put_volsw - single mixer put callback
2669 * @kcontrol: mixer control
2670 * @ucontrol: control element information
2672 * Callback to set the value of a single mixer control, or a double mixer
2673 * control that spans 2 registers.
2675 * Returns 0 for success.
2677 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2678 struct snd_ctl_elem_value *ucontrol)
2680 struct soc_mixer_control *mc =
2681 (struct soc_mixer_control *)kcontrol->private_value;
2682 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2683 unsigned int reg = mc->reg;
2684 unsigned int reg2 = mc->rreg;
2685 unsigned int shift = mc->shift;
2686 unsigned int rshift = mc->rshift;
2688 unsigned int mask = (1 << fls(max)) - 1;
2689 unsigned int invert = mc->invert;
2692 unsigned int val2 = 0;
2693 unsigned int val, val_mask;
2695 val = (ucontrol->value.integer.value[0] & mask);
2698 val_mask = mask << shift;
2700 if (snd_soc_volsw_is_stereo(mc)) {
2701 val2 = (ucontrol->value.integer.value[1] & mask);
2705 val_mask |= mask << rshift;
2706 val |= val2 << rshift;
2708 val2 = val2 << shift;
2712 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2717 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2721 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2724 * snd_soc_get_volsw_sx - single mixer get callback
2725 * @kcontrol: mixer control
2726 * @ucontrol: control element information
2728 * Callback to get the value of a single mixer control, or a double mixer
2729 * control that spans 2 registers.
2731 * Returns 0 for success.
2733 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2734 struct snd_ctl_elem_value *ucontrol)
2736 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2737 struct soc_mixer_control *mc =
2738 (struct soc_mixer_control *)kcontrol->private_value;
2740 unsigned int reg = mc->reg;
2741 unsigned int reg2 = mc->rreg;
2742 unsigned int shift = mc->shift;
2743 unsigned int rshift = mc->rshift;
2746 int mask = (1 << (fls(min + max) - 1)) - 1;
2748 ucontrol->value.integer.value[0] =
2749 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2751 if (snd_soc_volsw_is_stereo(mc))
2752 ucontrol->value.integer.value[1] =
2753 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2757 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2760 * snd_soc_put_volsw_sx - double mixer set callback
2761 * @kcontrol: mixer control
2762 * @uinfo: control element information
2764 * Callback to set the value of a double mixer control that spans 2 registers.
2766 * Returns 0 for success.
2768 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2769 struct snd_ctl_elem_value *ucontrol)
2771 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2772 struct soc_mixer_control *mc =
2773 (struct soc_mixer_control *)kcontrol->private_value;
2775 unsigned int reg = mc->reg;
2776 unsigned int reg2 = mc->rreg;
2777 unsigned int shift = mc->shift;
2778 unsigned int rshift = mc->rshift;
2781 int mask = (1 << (fls(min + max) - 1)) - 1;
2783 unsigned short val, val_mask, val2 = 0;
2785 val_mask = mask << shift;
2786 val = (ucontrol->value.integer.value[0] + min) & mask;
2789 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2793 if (snd_soc_volsw_is_stereo(mc)) {
2794 val_mask = mask << rshift;
2795 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2796 val2 = val2 << rshift;
2798 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2803 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2806 * snd_soc_info_volsw_s8 - signed mixer info callback
2807 * @kcontrol: mixer control
2808 * @uinfo: control element information
2810 * Callback to provide information about a signed mixer control.
2812 * Returns 0 for success.
2814 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2815 struct snd_ctl_elem_info *uinfo)
2817 struct soc_mixer_control *mc =
2818 (struct soc_mixer_control *)kcontrol->private_value;
2822 if (!mc->platform_max)
2823 mc->platform_max = mc->max;
2824 platform_max = mc->platform_max;
2826 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2828 uinfo->value.integer.min = 0;
2829 uinfo->value.integer.max = platform_max - min;
2832 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2835 * snd_soc_get_volsw_s8 - signed mixer get callback
2836 * @kcontrol: mixer control
2837 * @ucontrol: control element information
2839 * Callback to get the value of a signed mixer control.
2841 * Returns 0 for success.
2843 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2844 struct snd_ctl_elem_value *ucontrol)
2846 struct soc_mixer_control *mc =
2847 (struct soc_mixer_control *)kcontrol->private_value;
2848 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2849 unsigned int reg = mc->reg;
2851 int val = snd_soc_read(codec, reg);
2853 ucontrol->value.integer.value[0] =
2854 ((signed char)(val & 0xff))-min;
2855 ucontrol->value.integer.value[1] =
2856 ((signed char)((val >> 8) & 0xff))-min;
2859 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2862 * snd_soc_put_volsw_sgn - signed mixer put callback
2863 * @kcontrol: mixer control
2864 * @ucontrol: control element information
2866 * Callback to set the value of a signed mixer control.
2868 * Returns 0 for success.
2870 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2871 struct snd_ctl_elem_value *ucontrol)
2873 struct soc_mixer_control *mc =
2874 (struct soc_mixer_control *)kcontrol->private_value;
2875 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2876 unsigned int reg = mc->reg;
2880 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2881 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2883 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2885 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2888 * snd_soc_info_volsw_range - single mixer info callback with range.
2889 * @kcontrol: mixer control
2890 * @uinfo: control element information
2892 * Callback to provide information, within a range, about a single
2895 * returns 0 for success.
2897 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2898 struct snd_ctl_elem_info *uinfo)
2900 struct soc_mixer_control *mc =
2901 (struct soc_mixer_control *)kcontrol->private_value;
2905 if (!mc->platform_max)
2906 mc->platform_max = mc->max;
2907 platform_max = mc->platform_max;
2909 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2911 uinfo->value.integer.min = 0;
2912 uinfo->value.integer.max = platform_max - min;
2916 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2919 * snd_soc_put_volsw_range - single mixer put value callback with range.
2920 * @kcontrol: mixer control
2921 * @ucontrol: control element information
2923 * Callback to set the value, within a range, for a single mixer control.
2925 * Returns 0 for success.
2927 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2928 struct snd_ctl_elem_value *ucontrol)
2930 struct soc_mixer_control *mc =
2931 (struct soc_mixer_control *)kcontrol->private_value;
2932 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2933 unsigned int reg = mc->reg;
2934 unsigned int shift = mc->shift;
2937 unsigned int mask = (1 << fls(max)) - 1;
2938 unsigned int invert = mc->invert;
2939 unsigned int val, val_mask;
2941 val = ((ucontrol->value.integer.value[0] + min) & mask);
2944 val_mask = mask << shift;
2947 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2949 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2952 * snd_soc_get_volsw_range - single mixer get callback with range
2953 * @kcontrol: mixer control
2954 * @ucontrol: control element information
2956 * Callback to get the value, within a range, of a single mixer control.
2958 * Returns 0 for success.
2960 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
2961 struct snd_ctl_elem_value *ucontrol)
2963 struct soc_mixer_control *mc =
2964 (struct soc_mixer_control *)kcontrol->private_value;
2965 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2966 unsigned int reg = mc->reg;
2967 unsigned int shift = mc->shift;
2970 unsigned int mask = (1 << fls(max)) - 1;
2971 unsigned int invert = mc->invert;
2973 ucontrol->value.integer.value[0] =
2974 (snd_soc_read(codec, reg) >> shift) & mask;
2976 ucontrol->value.integer.value[0] =
2977 max - ucontrol->value.integer.value[0];
2978 ucontrol->value.integer.value[0] =
2979 ucontrol->value.integer.value[0] - min;
2983 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
2986 * snd_soc_limit_volume - Set new limit to an existing volume control.
2988 * @codec: where to look for the control
2989 * @name: Name of the control
2990 * @max: new maximum limit
2992 * Return 0 for success, else error.
2994 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2995 const char *name, int max)
2997 struct snd_card *card = codec->card->snd_card;
2998 struct snd_kcontrol *kctl;
2999 struct soc_mixer_control *mc;
3003 /* Sanity check for name and max */
3004 if (unlikely(!name || max <= 0))
3007 list_for_each_entry(kctl, &card->controls, list) {
3008 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3014 mc = (struct soc_mixer_control *)kctl->private_value;
3015 if (max <= mc->max) {
3016 mc->platform_max = max;
3022 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3024 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3025 struct snd_ctl_elem_info *uinfo)
3027 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3028 struct soc_bytes *params = (void *)kcontrol->private_value;
3030 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3031 uinfo->count = params->num_regs * codec->val_bytes;
3035 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3037 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3038 struct snd_ctl_elem_value *ucontrol)
3040 struct soc_bytes *params = (void *)kcontrol->private_value;
3041 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3044 if (codec->using_regmap)
3045 ret = regmap_raw_read(codec->control_data, params->base,
3046 ucontrol->value.bytes.data,
3047 params->num_regs * codec->val_bytes);
3051 /* Hide any masked bytes to ensure consistent data reporting */
3052 if (ret == 0 && params->mask) {
3053 switch (codec->val_bytes) {
3055 ucontrol->value.bytes.data[0] &= ~params->mask;
3058 ((u16 *)(&ucontrol->value.bytes.data))[0]
3062 ((u32 *)(&ucontrol->value.bytes.data))[0]
3072 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3074 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3075 struct snd_ctl_elem_value *ucontrol)
3077 struct soc_bytes *params = (void *)kcontrol->private_value;
3078 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3083 if (!codec->using_regmap)
3086 data = ucontrol->value.bytes.data;
3087 len = params->num_regs * codec->val_bytes;
3090 * If we've got a mask then we need to preserve the register
3091 * bits. We shouldn't modify the incoming data so take a
3095 ret = regmap_read(codec->control_data, params->base, &val);
3099 val &= params->mask;
3101 data = kmemdup(data, len, GFP_KERNEL);
3105 switch (codec->val_bytes) {
3107 ((u8 *)data)[0] &= ~params->mask;
3108 ((u8 *)data)[0] |= val;
3111 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3112 ((u16 *)data)[0] |= cpu_to_be16(val);
3115 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3116 ((u32 *)data)[0] |= cpu_to_be32(val);
3123 ret = regmap_raw_write(codec->control_data, params->base,
3131 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3134 * snd_soc_info_xr_sx - signed multi register info callback
3135 * @kcontrol: mreg control
3136 * @uinfo: control element information
3138 * Callback to provide information of a control that can
3139 * span multiple codec registers which together
3140 * forms a single signed value in a MSB/LSB manner.
3142 * Returns 0 for success.
3144 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3145 struct snd_ctl_elem_info *uinfo)
3147 struct soc_mreg_control *mc =
3148 (struct soc_mreg_control *)kcontrol->private_value;
3149 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3151 uinfo->value.integer.min = mc->min;
3152 uinfo->value.integer.max = mc->max;
3156 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3159 * snd_soc_get_xr_sx - signed multi register get callback
3160 * @kcontrol: mreg control
3161 * @ucontrol: control element information
3163 * Callback to get the value of a control that can span
3164 * multiple codec registers which together forms a single
3165 * signed value in a MSB/LSB manner. The control supports
3166 * specifying total no of bits used to allow for bitfields
3167 * across the multiple codec registers.
3169 * Returns 0 for success.
3171 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3172 struct snd_ctl_elem_value *ucontrol)
3174 struct soc_mreg_control *mc =
3175 (struct soc_mreg_control *)kcontrol->private_value;
3176 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3177 unsigned int regbase = mc->regbase;
3178 unsigned int regcount = mc->regcount;
3179 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3180 unsigned int regwmask = (1<<regwshift)-1;
3181 unsigned int invert = mc->invert;
3182 unsigned long mask = (1UL<<mc->nbits)-1;
3186 unsigned long regval;
3189 for (i = 0; i < regcount; i++) {
3190 regval = snd_soc_read(codec, regbase+i) & regwmask;
3191 val |= regval << (regwshift*(regcount-i-1));
3194 if (min < 0 && val > max)
3198 ucontrol->value.integer.value[0] = val;
3202 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3205 * snd_soc_put_xr_sx - signed multi register get callback
3206 * @kcontrol: mreg control
3207 * @ucontrol: control element information
3209 * Callback to set the value of a control that can span
3210 * multiple codec registers which together forms a single
3211 * signed value in a MSB/LSB manner. The control supports
3212 * specifying total no of bits used to allow for bitfields
3213 * across the multiple codec registers.
3215 * Returns 0 for success.
3217 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3218 struct snd_ctl_elem_value *ucontrol)
3220 struct soc_mreg_control *mc =
3221 (struct soc_mreg_control *)kcontrol->private_value;
3222 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3223 unsigned int regbase = mc->regbase;
3224 unsigned int regcount = mc->regcount;
3225 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3226 unsigned int regwmask = (1<<regwshift)-1;
3227 unsigned int invert = mc->invert;
3228 unsigned long mask = (1UL<<mc->nbits)-1;
3230 long val = ucontrol->value.integer.value[0];
3231 unsigned int i, regval, regmask;
3237 for (i = 0; i < regcount; i++) {
3238 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3239 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3240 err = snd_soc_update_bits_locked(codec, regbase+i,
3248 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3251 * snd_soc_get_strobe - strobe get callback
3252 * @kcontrol: mixer control
3253 * @ucontrol: control element information
3255 * Callback get the value of a strobe mixer control.
3257 * Returns 0 for success.
3259 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3260 struct snd_ctl_elem_value *ucontrol)
3262 struct soc_mixer_control *mc =
3263 (struct soc_mixer_control *)kcontrol->private_value;
3264 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3265 unsigned int reg = mc->reg;
3266 unsigned int shift = mc->shift;
3267 unsigned int mask = 1 << shift;
3268 unsigned int invert = mc->invert != 0;
3269 unsigned int val = snd_soc_read(codec, reg) & mask;
3271 if (shift != 0 && val != 0)
3273 ucontrol->value.enumerated.item[0] = val ^ invert;
3277 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3280 * snd_soc_put_strobe - strobe put callback
3281 * @kcontrol: mixer control
3282 * @ucontrol: control element information
3284 * Callback strobe a register bit to high then low (or the inverse)
3285 * in one pass of a single mixer enum control.
3287 * Returns 1 for success.
3289 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3290 struct snd_ctl_elem_value *ucontrol)
3292 struct soc_mixer_control *mc =
3293 (struct soc_mixer_control *)kcontrol->private_value;
3294 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3295 unsigned int reg = mc->reg;
3296 unsigned int shift = mc->shift;
3297 unsigned int mask = 1 << shift;
3298 unsigned int invert = mc->invert != 0;
3299 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3300 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3301 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3304 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3308 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3311 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3314 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3316 * @clk_id: DAI specific clock ID
3317 * @freq: new clock frequency in Hz
3318 * @dir: new clock direction - input/output.
3320 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3322 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3323 unsigned int freq, int dir)
3325 if (dai->driver && dai->driver->ops->set_sysclk)
3326 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3327 else if (dai->codec && dai->codec->driver->set_sysclk)
3328 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3333 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3336 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3338 * @clk_id: DAI specific clock ID
3339 * @source: Source for the clock
3340 * @freq: new clock frequency in Hz
3341 * @dir: new clock direction - input/output.
3343 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3345 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3346 int source, unsigned int freq, int dir)
3348 if (codec->driver->set_sysclk)
3349 return codec->driver->set_sysclk(codec, clk_id, source,
3354 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3357 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3359 * @div_id: DAI specific clock divider ID
3360 * @div: new clock divisor.
3362 * Configures the clock dividers. This is used to derive the best DAI bit and
3363 * frame clocks from the system or master clock. It's best to set the DAI bit
3364 * and frame clocks as low as possible to save system power.
3366 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3367 int div_id, int div)
3369 if (dai->driver && dai->driver->ops->set_clkdiv)
3370 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3374 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3377 * snd_soc_dai_set_pll - configure DAI PLL.
3379 * @pll_id: DAI specific PLL ID
3380 * @source: DAI specific source for the PLL
3381 * @freq_in: PLL input clock frequency in Hz
3382 * @freq_out: requested PLL output clock frequency in Hz
3384 * Configures and enables PLL to generate output clock based on input clock.
3386 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3387 unsigned int freq_in, unsigned int freq_out)
3389 if (dai->driver && dai->driver->ops->set_pll)
3390 return dai->driver->ops->set_pll(dai, pll_id, source,
3392 else if (dai->codec && dai->codec->driver->set_pll)
3393 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3398 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3401 * snd_soc_codec_set_pll - configure codec PLL.
3403 * @pll_id: DAI specific PLL ID
3404 * @source: DAI specific source for the PLL
3405 * @freq_in: PLL input clock frequency in Hz
3406 * @freq_out: requested PLL output clock frequency in Hz
3408 * Configures and enables PLL to generate output clock based on input clock.
3410 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3411 unsigned int freq_in, unsigned int freq_out)
3413 if (codec->driver->set_pll)
3414 return codec->driver->set_pll(codec, pll_id, source,
3419 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3422 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3424 * @fmt: SND_SOC_DAIFMT_ format value.
3426 * Configures the DAI hardware format and clocking.
3428 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3430 if (dai->driver == NULL)
3432 if (dai->driver->ops->set_fmt == NULL)
3434 return dai->driver->ops->set_fmt(dai, fmt);
3436 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3439 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3441 * @tx_mask: bitmask representing active TX slots.
3442 * @rx_mask: bitmask representing active RX slots.
3443 * @slots: Number of slots in use.
3444 * @slot_width: Width in bits for each slot.
3446 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3449 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3450 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3452 if (dai->driver && dai->driver->ops->set_tdm_slot)
3453 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3458 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3461 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3463 * @tx_num: how many TX channels
3464 * @tx_slot: pointer to an array which imply the TX slot number channel
3466 * @rx_num: how many RX channels
3467 * @rx_slot: pointer to an array which imply the RX slot number channel
3470 * configure the relationship between channel number and TDM slot number.
3472 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3473 unsigned int tx_num, unsigned int *tx_slot,
3474 unsigned int rx_num, unsigned int *rx_slot)
3476 if (dai->driver && dai->driver->ops->set_channel_map)
3477 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3482 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3485 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3487 * @tristate: tristate enable
3489 * Tristates the DAI so that others can use it.
3491 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3493 if (dai->driver && dai->driver->ops->set_tristate)
3494 return dai->driver->ops->set_tristate(dai, tristate);
3498 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3501 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3503 * @mute: mute enable
3505 * Mutes the DAI DAC.
3507 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3509 if (dai->driver && dai->driver->ops->digital_mute)
3510 return dai->driver->ops->digital_mute(dai, mute);
3514 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3517 * snd_soc_register_card - Register a card with the ASoC core
3519 * @card: Card to register
3522 int snd_soc_register_card(struct snd_soc_card *card)
3526 if (!card->name || !card->dev)
3529 for (i = 0; i < card->num_links; i++) {
3530 struct snd_soc_dai_link *link = &card->dai_link[i];
3533 * Codec must be specified by 1 of name or OF node,
3534 * not both or neither.
3536 if (!!link->codec_name == !!link->codec_of_node) {
3538 "Neither/both codec name/of_node are set for %s\n",
3542 /* Codec DAI name must be specified */
3543 if (!link->codec_dai_name) {
3544 dev_err(card->dev, "codec_dai_name not set for %s\n",
3550 * Platform may be specified by either name or OF node, but
3551 * can be left unspecified, and a dummy platform will be used.
3553 if (link->platform_name && link->platform_of_node) {
3555 "Both platform name/of_node are set for %s\n", link->name);
3560 * CPU device may be specified by either name or OF node, but
3561 * can be left unspecified, and will be matched based on DAI
3564 if (link->cpu_name && link->cpu_of_node) {
3566 "Neither/both cpu name/of_node are set for %s\n",
3571 * At least one of CPU DAI name or CPU device name/node must be
3574 if (!link->cpu_dai_name &&
3575 !(link->cpu_name || link->cpu_of_node)) {
3577 "Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3583 dev_set_drvdata(card->dev, card);
3585 snd_soc_initialize_card_lists(card);
3587 soc_init_card_debugfs(card);
3589 card->rtd = devm_kzalloc(card->dev,
3590 sizeof(struct snd_soc_pcm_runtime) *
3591 (card->num_links + card->num_aux_devs),
3593 if (card->rtd == NULL)
3596 card->rtd_aux = &card->rtd[card->num_links];
3598 for (i = 0; i < card->num_links; i++)
3599 card->rtd[i].dai_link = &card->dai_link[i];
3601 INIT_LIST_HEAD(&card->list);
3602 INIT_LIST_HEAD(&card->dapm_dirty);
3603 card->instantiated = 0;
3604 mutex_init(&card->mutex);
3605 mutex_init(&card->dapm_mutex);
3607 ret = snd_soc_instantiate_card(card);
3609 soc_cleanup_card_debugfs(card);
3613 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3616 * snd_soc_unregister_card - Unregister a card with the ASoC core
3618 * @card: Card to unregister
3621 int snd_soc_unregister_card(struct snd_soc_card *card)
3623 if (card->instantiated)
3624 soc_cleanup_card_resources(card);
3625 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3629 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3632 * Simplify DAI link configuration by removing ".-1" from device names
3633 * and sanitizing names.
3635 static char *fmt_single_name(struct device *dev, int *id)
3637 char *found, name[NAME_SIZE];
3640 if (dev_name(dev) == NULL)
3643 strlcpy(name, dev_name(dev), NAME_SIZE);
3645 /* are we a "%s.%d" name (platform and SPI components) */
3646 found = strstr(name, dev->driver->name);
3649 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3651 /* discard ID from name if ID == -1 */
3653 found[strlen(dev->driver->name)] = '\0';
3657 /* I2C component devices are named "bus-addr" */
3658 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3659 char tmp[NAME_SIZE];
3661 /* create unique ID number from I2C addr and bus */
3662 *id = ((id1 & 0xffff) << 16) + id2;
3664 /* sanitize component name for DAI link creation */
3665 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3666 strlcpy(name, tmp, NAME_SIZE);
3671 return kstrdup(name, GFP_KERNEL);
3675 * Simplify DAI link naming for single devices with multiple DAIs by removing
3676 * any ".-1" and using the DAI name (instead of device name).
3678 static inline char *fmt_multiple_name(struct device *dev,
3679 struct snd_soc_dai_driver *dai_drv)
3681 if (dai_drv->name == NULL) {
3682 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3687 return kstrdup(dai_drv->name, GFP_KERNEL);
3691 * snd_soc_register_dai - Register a DAI with the ASoC core
3693 * @dai: DAI to register
3695 int snd_soc_register_dai(struct device *dev,
3696 struct snd_soc_dai_driver *dai_drv)
3698 struct snd_soc_codec *codec;
3699 struct snd_soc_dai *dai;
3701 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3703 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3707 /* create DAI component name */
3708 dai->name = fmt_single_name(dev, &dai->id);
3709 if (dai->name == NULL) {
3715 dai->driver = dai_drv;
3716 dai->dapm.dev = dev;
3717 if (!dai->driver->ops)
3718 dai->driver->ops = &null_dai_ops;
3720 mutex_lock(&client_mutex);
3722 list_for_each_entry(codec, &codec_list, list) {
3723 if (codec->dev == dev) {
3724 dev_dbg(dev, "Mapped DAI %s to CODEC %s\n",
3725 dai->name, codec->name);
3732 dai->dapm.idle_bias_off = 1;
3734 list_add(&dai->list, &dai_list);
3736 mutex_unlock(&client_mutex);
3738 pr_debug("Registered DAI '%s'\n", dai->name);
3742 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3745 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3747 * @dai: DAI to unregister
3749 void snd_soc_unregister_dai(struct device *dev)
3751 struct snd_soc_dai *dai;
3753 list_for_each_entry(dai, &dai_list, list) {
3754 if (dev == dai->dev)
3760 mutex_lock(&client_mutex);
3761 list_del(&dai->list);
3762 mutex_unlock(&client_mutex);
3764 pr_debug("Unregistered DAI '%s'\n", dai->name);
3768 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3771 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3773 * @dai: Array of DAIs to register
3774 * @count: Number of DAIs
3776 int snd_soc_register_dais(struct device *dev,
3777 struct snd_soc_dai_driver *dai_drv, size_t count)
3779 struct snd_soc_codec *codec;
3780 struct snd_soc_dai *dai;
3783 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3785 for (i = 0; i < count; i++) {
3787 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3793 /* create DAI component name */
3794 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3795 if (dai->name == NULL) {
3802 dai->driver = &dai_drv[i];
3803 if (dai->driver->id)
3804 dai->id = dai->driver->id;
3807 dai->dapm.dev = dev;
3808 if (!dai->driver->ops)
3809 dai->driver->ops = &null_dai_ops;
3811 mutex_lock(&client_mutex);
3813 list_for_each_entry(codec, &codec_list, list) {
3814 if (codec->dev == dev) {
3815 dev_dbg(dev, "Mapped DAI %s to CODEC %s\n",
3816 dai->name, codec->name);
3823 dai->dapm.idle_bias_off = 1;
3825 list_add(&dai->list, &dai_list);
3827 mutex_unlock(&client_mutex);
3829 pr_debug("Registered DAI '%s'\n", dai->name);
3835 for (i--; i >= 0; i--)
3836 snd_soc_unregister_dai(dev);
3840 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3843 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3845 * @dai: Array of DAIs to unregister
3846 * @count: Number of DAIs
3848 void snd_soc_unregister_dais(struct device *dev, size_t count)
3852 for (i = 0; i < count; i++)
3853 snd_soc_unregister_dai(dev);
3855 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3858 * snd_soc_register_platform - Register a platform with the ASoC core
3860 * @platform: platform to register
3862 int snd_soc_register_platform(struct device *dev,
3863 struct snd_soc_platform_driver *platform_drv)
3865 struct snd_soc_platform *platform;
3867 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3869 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3870 if (platform == NULL)
3873 /* create platform component name */
3874 platform->name = fmt_single_name(dev, &platform->id);
3875 if (platform->name == NULL) {
3880 platform->dev = dev;
3881 platform->driver = platform_drv;
3882 platform->dapm.dev = dev;
3883 platform->dapm.platform = platform;
3884 platform->dapm.stream_event = platform_drv->stream_event;
3885 mutex_init(&platform->mutex);
3887 mutex_lock(&client_mutex);
3888 list_add(&platform->list, &platform_list);
3889 mutex_unlock(&client_mutex);
3891 pr_debug("Registered platform '%s'\n", platform->name);
3895 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3898 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3900 * @platform: platform to unregister
3902 void snd_soc_unregister_platform(struct device *dev)
3904 struct snd_soc_platform *platform;
3906 list_for_each_entry(platform, &platform_list, list) {
3907 if (dev == platform->dev)
3913 mutex_lock(&client_mutex);
3914 list_del(&platform->list);
3915 mutex_unlock(&client_mutex);
3917 pr_debug("Unregistered platform '%s'\n", platform->name);
3918 kfree(platform->name);
3921 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3923 static u64 codec_format_map[] = {
3924 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3925 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3926 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3927 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3928 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3929 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3930 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3931 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3932 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3933 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3934 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3935 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3936 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3937 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3938 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3939 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3942 /* Fix up the DAI formats for endianness: codecs don't actually see
3943 * the endianness of the data but we're using the CPU format
3944 * definitions which do need to include endianness so we ensure that
3945 * codec DAIs always have both big and little endian variants set.
3947 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3951 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3952 if (stream->formats & codec_format_map[i])
3953 stream->formats |= codec_format_map[i];
3957 * snd_soc_register_codec - Register a codec with the ASoC core
3959 * @codec: codec to register
3961 int snd_soc_register_codec(struct device *dev,
3962 const struct snd_soc_codec_driver *codec_drv,
3963 struct snd_soc_dai_driver *dai_drv,
3967 struct snd_soc_codec *codec;
3970 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3972 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3976 /* create CODEC component name */
3977 codec->name = fmt_single_name(dev, &codec->id);
3978 if (codec->name == NULL) {
3983 if (codec_drv->compress_type)
3984 codec->compress_type = codec_drv->compress_type;
3986 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3988 codec->write = codec_drv->write;
3989 codec->read = codec_drv->read;
3990 codec->volatile_register = codec_drv->volatile_register;
3991 codec->readable_register = codec_drv->readable_register;
3992 codec->writable_register = codec_drv->writable_register;
3993 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3994 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3995 codec->dapm.dev = dev;
3996 codec->dapm.codec = codec;
3997 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3998 codec->dapm.stream_event = codec_drv->stream_event;
4000 codec->driver = codec_drv;
4001 codec->num_dai = num_dai;
4002 mutex_init(&codec->mutex);
4004 /* allocate CODEC register cache */
4005 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
4006 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
4007 codec->reg_size = reg_size;
4008 /* it is necessary to make a copy of the default register cache
4009 * because in the case of using a compression type that requires
4010 * the default register cache to be marked as __devinitconst the
4011 * kernel might have freed the array by the time we initialize
4014 if (codec_drv->reg_cache_default) {
4015 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
4016 reg_size, GFP_KERNEL);
4017 if (!codec->reg_def_copy) {
4024 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4025 if (!codec->volatile_register)
4026 codec->volatile_register = snd_soc_default_volatile_register;
4027 if (!codec->readable_register)
4028 codec->readable_register = snd_soc_default_readable_register;
4029 if (!codec->writable_register)
4030 codec->writable_register = snd_soc_default_writable_register;
4033 for (i = 0; i < num_dai; i++) {
4034 fixup_codec_formats(&dai_drv[i].playback);
4035 fixup_codec_formats(&dai_drv[i].capture);
4038 mutex_lock(&client_mutex);
4039 list_add(&codec->list, &codec_list);
4040 mutex_unlock(&client_mutex);
4042 /* register any DAIs */
4044 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4046 dev_err(codec->dev, "Failed to regster DAIs: %d\n",
4050 pr_debug("Registered codec '%s'\n", codec->name);
4058 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4061 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4063 * @codec: codec to unregister
4065 void snd_soc_unregister_codec(struct device *dev)
4067 struct snd_soc_codec *codec;
4070 list_for_each_entry(codec, &codec_list, list) {
4071 if (dev == codec->dev)
4078 for (i = 0; i < codec->num_dai; i++)
4079 snd_soc_unregister_dai(dev);
4081 mutex_lock(&client_mutex);
4082 list_del(&codec->list);
4083 mutex_unlock(&client_mutex);
4085 pr_debug("Unregistered codec '%s'\n", codec->name);
4087 snd_soc_cache_exit(codec);
4088 kfree(codec->reg_def_copy);
4092 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4094 /* Retrieve a card's name from device tree */
4095 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4096 const char *propname)
4098 struct device_node *np = card->dev->of_node;
4101 ret = of_property_read_string_index(np, propname, 0, &card->name);
4103 * EINVAL means the property does not exist. This is fine providing
4104 * card->name was previously set, which is checked later in
4105 * snd_soc_register_card.
4107 if (ret < 0 && ret != -EINVAL) {
4109 "Property '%s' could not be read: %d\n",
4116 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4118 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4119 const char *propname)
4121 struct device_node *np = card->dev->of_node;
4123 struct snd_soc_dapm_route *routes;
4126 num_routes = of_property_count_strings(np, propname);
4127 if (num_routes < 0 || num_routes & 1) {
4129 "Property '%s' does not exist or its length is not even\n",
4136 "Property '%s's length is zero\n",
4141 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4145 "Could not allocate DAPM route table\n");
4149 for (i = 0; i < num_routes; i++) {
4150 ret = of_property_read_string_index(np, propname,
4151 2 * i, &routes[i].sink);
4154 "Property '%s' index %d could not be read: %d\n",
4155 propname, 2 * i, ret);
4159 ret = of_property_read_string_index(np, propname,
4160 (2 * i) + 1, &routes[i].source);
4163 "Property '%s' index %d could not be read: %d\n",
4164 propname, (2 * i) + 1, ret);
4170 card->num_dapm_routes = num_routes;
4171 card->dapm_routes = routes;
4175 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4177 static int __init snd_soc_init(void)
4179 #ifdef CONFIG_DEBUG_FS
4180 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4181 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4182 pr_warn("ASoC: Failed to create debugfs directory\n");
4183 snd_soc_debugfs_root = NULL;
4186 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4188 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4190 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4192 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4194 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4195 &platform_list_fops))
4196 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4199 snd_soc_util_init();
4201 return platform_driver_register(&soc_driver);
4203 module_init(snd_soc_init);
4205 static void __exit snd_soc_exit(void)
4207 snd_soc_util_exit();
4209 #ifdef CONFIG_DEBUG_FS
4210 debugfs_remove_recursive(snd_soc_debugfs_root);
4212 platform_driver_unregister(&soc_driver);
4214 module_exit(snd_soc_exit);
4216 /* Module information */
4217 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4218 MODULE_DESCRIPTION("ALSA SoC Core");
4219 MODULE_LICENSE("GPL");
4220 MODULE_ALIAS("platform:soc-audio");