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_sync(&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 /* suspend all CODECs */
613 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
614 /* If there are paths active then the CODEC will be held with
615 * bias _ON and should not be suspended. */
616 if (!codec->suspended && codec->driver->suspend) {
617 switch (codec->dapm.bias_level) {
618 case SND_SOC_BIAS_STANDBY:
620 * If the CODEC is capable of idle
621 * bias off then being in STANDBY
622 * means it's doing something,
623 * otherwise fall through.
625 if (codec->dapm.idle_bias_off) {
627 "idle_bias_off CODEC on over suspend\n");
630 case SND_SOC_BIAS_OFF:
631 codec->driver->suspend(codec);
632 codec->suspended = 1;
633 codec->cache_sync = 1;
636 dev_dbg(codec->dev, "CODEC is on over suspend\n");
642 for (i = 0; i < card->num_rtd; i++) {
643 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
645 if (card->rtd[i].dai_link->ignore_suspend)
648 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
649 cpu_dai->driver->suspend(cpu_dai);
652 if (card->suspend_post)
653 card->suspend_post(card);
657 EXPORT_SYMBOL_GPL(snd_soc_suspend);
659 /* deferred resume work, so resume can complete before we finished
660 * setting our codec back up, which can be very slow on I2C
662 static void soc_resume_deferred(struct work_struct *work)
664 struct snd_soc_card *card =
665 container_of(work, struct snd_soc_card, deferred_resume_work);
666 struct snd_soc_codec *codec;
669 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
670 * so userspace apps are blocked from touching us
673 dev_dbg(card->dev, "starting resume work\n");
675 /* Bring us up into D2 so that DAPM starts enabling things */
676 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
678 if (card->resume_pre)
679 card->resume_pre(card);
681 /* resume AC97 DAIs */
682 for (i = 0; i < card->num_rtd; i++) {
683 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
685 if (card->rtd[i].dai_link->ignore_suspend)
688 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
689 cpu_dai->driver->resume(cpu_dai);
692 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
693 /* If the CODEC was idle over suspend then it will have been
694 * left with bias OFF or STANDBY and suspended so we must now
695 * resume. Otherwise the suspend was suppressed.
697 if (codec->driver->resume && codec->suspended) {
698 switch (codec->dapm.bias_level) {
699 case SND_SOC_BIAS_STANDBY:
700 case SND_SOC_BIAS_OFF:
701 codec->driver->resume(codec);
702 codec->suspended = 0;
705 dev_dbg(codec->dev, "CODEC was on over suspend\n");
711 for (i = 0; i < card->num_rtd; i++) {
713 if (card->rtd[i].dai_link->ignore_suspend)
716 snd_soc_dapm_stream_event(&card->rtd[i],
717 SNDRV_PCM_STREAM_PLAYBACK,
718 SND_SOC_DAPM_STREAM_RESUME);
720 snd_soc_dapm_stream_event(&card->rtd[i],
721 SNDRV_PCM_STREAM_CAPTURE,
722 SND_SOC_DAPM_STREAM_RESUME);
725 /* unmute any active DACs */
726 for (i = 0; i < card->num_rtd; i++) {
727 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
728 struct snd_soc_dai_driver *drv = dai->driver;
730 if (card->rtd[i].dai_link->ignore_suspend)
733 if (drv->ops->digital_mute && dai->playback_active)
734 drv->ops->digital_mute(dai, 0);
737 for (i = 0; i < card->num_rtd; i++) {
738 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
739 struct snd_soc_platform *platform = card->rtd[i].platform;
741 if (card->rtd[i].dai_link->ignore_suspend)
744 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
745 cpu_dai->driver->resume(cpu_dai);
746 if (platform->driver->resume && platform->suspended) {
747 platform->driver->resume(cpu_dai);
748 platform->suspended = 0;
752 if (card->resume_post)
753 card->resume_post(card);
755 dev_dbg(card->dev, "resume work completed\n");
757 /* userspace can access us now we are back as we were before */
758 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
761 /* powers up audio subsystem after a suspend */
762 int snd_soc_resume(struct device *dev)
764 struct snd_soc_card *card = dev_get_drvdata(dev);
765 int i, ac97_control = 0;
767 /* If the initialization of this soc device failed, there is no codec
768 * associated with it. Just bail out in this case.
770 if (list_empty(&card->codec_dev_list))
773 /* AC97 devices might have other drivers hanging off them so
774 * need to resume immediately. Other drivers don't have that
775 * problem and may take a substantial amount of time to resume
776 * due to I/O costs and anti-pop so handle them out of line.
778 for (i = 0; i < card->num_rtd; i++) {
779 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
780 ac97_control |= cpu_dai->driver->ac97_control;
783 dev_dbg(dev, "Resuming AC97 immediately\n");
784 soc_resume_deferred(&card->deferred_resume_work);
786 dev_dbg(dev, "Scheduling resume work\n");
787 if (!schedule_work(&card->deferred_resume_work))
788 dev_err(dev, "resume work item may be lost\n");
793 EXPORT_SYMBOL_GPL(snd_soc_resume);
795 #define snd_soc_suspend NULL
796 #define snd_soc_resume NULL
799 static const struct snd_soc_dai_ops null_dai_ops = {
802 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
804 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
805 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
806 struct snd_soc_codec *codec;
807 struct snd_soc_platform *platform;
808 struct snd_soc_dai *codec_dai, *cpu_dai;
809 const char *platform_name;
811 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
813 /* Find CPU DAI from registered DAIs*/
814 list_for_each_entry(cpu_dai, &dai_list, list) {
815 if (dai_link->cpu_of_node &&
816 (cpu_dai->dev->of_node != dai_link->cpu_of_node))
818 if (dai_link->cpu_name &&
819 strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name))
821 if (dai_link->cpu_dai_name &&
822 strcmp(cpu_dai->name, dai_link->cpu_dai_name))
825 rtd->cpu_dai = cpu_dai;
829 dev_err(card->dev, "CPU DAI %s not registered\n",
830 dai_link->cpu_dai_name);
831 return -EPROBE_DEFER;
834 /* Find CODEC from registered CODECs */
835 list_for_each_entry(codec, &codec_list, list) {
836 if (dai_link->codec_of_node) {
837 if (codec->dev->of_node != dai_link->codec_of_node)
840 if (strcmp(codec->name, dai_link->codec_name))
847 * CODEC found, so find CODEC DAI from registered DAIs from
850 list_for_each_entry(codec_dai, &dai_list, list) {
851 if (codec->dev == codec_dai->dev &&
852 !strcmp(codec_dai->name,
853 dai_link->codec_dai_name)) {
855 rtd->codec_dai = codec_dai;
859 if (!rtd->codec_dai) {
860 dev_err(card->dev, "CODEC DAI %s not registered\n",
861 dai_link->codec_dai_name);
862 return -EPROBE_DEFER;
867 dev_err(card->dev, "CODEC %s not registered\n",
868 dai_link->codec_name);
869 return -EPROBE_DEFER;
872 /* if there's no platform we match on the empty platform */
873 platform_name = dai_link->platform_name;
874 if (!platform_name && !dai_link->platform_of_node)
875 platform_name = "snd-soc-dummy";
877 /* find one from the set of registered platforms */
878 list_for_each_entry(platform, &platform_list, list) {
879 if (dai_link->platform_of_node) {
880 if (platform->dev->of_node !=
881 dai_link->platform_of_node)
884 if (strcmp(platform->name, platform_name))
888 rtd->platform = platform;
890 if (!rtd->platform) {
891 dev_err(card->dev, "platform %s not registered\n",
892 dai_link->platform_name);
893 return -EPROBE_DEFER;
901 static int soc_remove_platform(struct snd_soc_platform *platform)
905 if (platform->driver->remove) {
906 ret = platform->driver->remove(platform);
908 pr_err("asoc: failed to remove %s: %d\n",
909 platform->name, ret);
912 /* Make sure all DAPM widgets are freed */
913 snd_soc_dapm_free(&platform->dapm);
915 soc_cleanup_platform_debugfs(platform);
916 platform->probed = 0;
917 list_del(&platform->card_list);
918 module_put(platform->dev->driver->owner);
923 static void soc_remove_codec(struct snd_soc_codec *codec)
927 if (codec->driver->remove) {
928 err = codec->driver->remove(codec);
931 "asoc: failed to remove %s: %d\n",
935 /* Make sure all DAPM widgets are freed */
936 snd_soc_dapm_free(&codec->dapm);
938 soc_cleanup_codec_debugfs(codec);
940 list_del(&codec->card_list);
941 module_put(codec->dev->driver->owner);
944 static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order)
946 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
947 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
950 /* unregister the rtd device */
951 if (rtd->dev_registered) {
952 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
953 device_remove_file(rtd->dev, &dev_attr_codec_reg);
954 device_unregister(rtd->dev);
955 rtd->dev_registered = 0;
958 /* remove the CODEC DAI */
959 if (codec_dai && codec_dai->probed &&
960 codec_dai->driver->remove_order == order) {
961 if (codec_dai->driver->remove) {
962 err = codec_dai->driver->remove(codec_dai);
964 pr_err("asoc: failed to remove %s: %d\n",
965 codec_dai->name, err);
967 codec_dai->probed = 0;
968 list_del(&codec_dai->card_list);
971 /* remove the cpu_dai */
972 if (cpu_dai && cpu_dai->probed &&
973 cpu_dai->driver->remove_order == order) {
974 if (cpu_dai->driver->remove) {
975 err = cpu_dai->driver->remove(cpu_dai);
977 pr_err("asoc: failed to remove %s: %d\n",
981 list_del(&cpu_dai->card_list);
983 if (!cpu_dai->codec) {
984 snd_soc_dapm_free(&cpu_dai->dapm);
985 module_put(cpu_dai->dev->driver->owner);
990 static void soc_remove_link_components(struct snd_soc_card *card, int num,
993 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
994 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
995 struct snd_soc_dai *codec_dai = rtd->codec_dai;
996 struct snd_soc_platform *platform = rtd->platform;
997 struct snd_soc_codec *codec;
999 /* remove the platform */
1000 if (platform && platform->probed &&
1001 platform->driver->remove_order == order) {
1002 soc_remove_platform(platform);
1005 /* remove the CODEC-side CODEC */
1007 codec = codec_dai->codec;
1008 if (codec && codec->probed &&
1009 codec->driver->remove_order == order)
1010 soc_remove_codec(codec);
1013 /* remove any CPU-side CODEC */
1015 codec = cpu_dai->codec;
1016 if (codec && codec->probed &&
1017 codec->driver->remove_order == order)
1018 soc_remove_codec(codec);
1022 static void soc_remove_dai_links(struct snd_soc_card *card)
1026 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1028 for (dai = 0; dai < card->num_rtd; dai++)
1029 soc_remove_link_dais(card, dai, order);
1032 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1034 for (dai = 0; dai < card->num_rtd; dai++)
1035 soc_remove_link_components(card, dai, order);
1041 static void soc_set_name_prefix(struct snd_soc_card *card,
1042 struct snd_soc_codec *codec)
1046 if (card->codec_conf == NULL)
1049 for (i = 0; i < card->num_configs; i++) {
1050 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1051 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1052 codec->name_prefix = map->name_prefix;
1058 static int soc_probe_codec(struct snd_soc_card *card,
1059 struct snd_soc_codec *codec)
1062 const struct snd_soc_codec_driver *driver = codec->driver;
1063 struct snd_soc_dai *dai;
1066 codec->dapm.card = card;
1067 soc_set_name_prefix(card, codec);
1069 if (!try_module_get(codec->dev->driver->owner))
1072 soc_init_codec_debugfs(codec);
1074 if (driver->dapm_widgets)
1075 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1076 driver->num_dapm_widgets);
1078 /* Create DAPM widgets for each DAI stream */
1079 list_for_each_entry(dai, &dai_list, list) {
1080 if (dai->dev != codec->dev)
1083 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1086 codec->dapm.idle_bias_off = driver->idle_bias_off;
1088 if (driver->probe) {
1089 ret = driver->probe(codec);
1092 "asoc: failed to probe CODEC %s: %d\n",
1098 /* If the driver didn't set I/O up try regmap */
1099 if (!codec->write && dev_get_regmap(codec->dev, NULL))
1100 snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
1102 if (driver->controls)
1103 snd_soc_add_codec_controls(codec, driver->controls,
1104 driver->num_controls);
1105 if (driver->dapm_routes)
1106 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1107 driver->num_dapm_routes);
1109 /* mark codec as probed and add to card codec list */
1111 list_add(&codec->card_list, &card->codec_dev_list);
1112 list_add(&codec->dapm.list, &card->dapm_list);
1117 soc_cleanup_codec_debugfs(codec);
1118 module_put(codec->dev->driver->owner);
1123 static int soc_probe_platform(struct snd_soc_card *card,
1124 struct snd_soc_platform *platform)
1127 const struct snd_soc_platform_driver *driver = platform->driver;
1128 struct snd_soc_dai *dai;
1130 platform->card = card;
1131 platform->dapm.card = card;
1133 if (!try_module_get(platform->dev->driver->owner))
1136 soc_init_platform_debugfs(platform);
1138 if (driver->dapm_widgets)
1139 snd_soc_dapm_new_controls(&platform->dapm,
1140 driver->dapm_widgets, driver->num_dapm_widgets);
1142 /* Create DAPM widgets for each DAI stream */
1143 list_for_each_entry(dai, &dai_list, list) {
1144 if (dai->dev != platform->dev)
1147 snd_soc_dapm_new_dai_widgets(&platform->dapm, dai);
1150 platform->dapm.idle_bias_off = 1;
1152 if (driver->probe) {
1153 ret = driver->probe(platform);
1155 dev_err(platform->dev,
1156 "asoc: failed to probe platform %s: %d\n",
1157 platform->name, ret);
1162 if (driver->controls)
1163 snd_soc_add_platform_controls(platform, driver->controls,
1164 driver->num_controls);
1165 if (driver->dapm_routes)
1166 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1167 driver->num_dapm_routes);
1169 /* mark platform as probed and add to card platform list */
1170 platform->probed = 1;
1171 list_add(&platform->card_list, &card->platform_dev_list);
1172 list_add(&platform->dapm.list, &card->dapm_list);
1177 soc_cleanup_platform_debugfs(platform);
1178 module_put(platform->dev->driver->owner);
1183 static void rtd_release(struct device *dev)
1188 static int soc_post_component_init(struct snd_soc_card *card,
1189 struct snd_soc_codec *codec,
1190 int num, int dailess)
1192 struct snd_soc_dai_link *dai_link = NULL;
1193 struct snd_soc_aux_dev *aux_dev = NULL;
1194 struct snd_soc_pcm_runtime *rtd;
1195 const char *temp, *name;
1199 dai_link = &card->dai_link[num];
1200 rtd = &card->rtd[num];
1201 name = dai_link->name;
1203 aux_dev = &card->aux_dev[num];
1204 rtd = &card->rtd_aux[num];
1205 name = aux_dev->name;
1209 /* Make sure all DAPM widgets are instantiated */
1210 snd_soc_dapm_new_widgets(&codec->dapm);
1212 /* machine controls, routes and widgets are not prefixed */
1213 temp = codec->name_prefix;
1214 codec->name_prefix = NULL;
1216 /* do machine specific initialization */
1217 if (!dailess && dai_link->init)
1218 ret = dai_link->init(rtd);
1219 else if (dailess && aux_dev->init)
1220 ret = aux_dev->init(&codec->dapm);
1222 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1225 codec->name_prefix = temp;
1227 /* register the rtd device */
1230 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1233 device_initialize(rtd->dev);
1234 rtd->dev->parent = card->dev;
1235 rtd->dev->release = rtd_release;
1236 rtd->dev->init_name = name;
1237 dev_set_drvdata(rtd->dev, rtd);
1238 mutex_init(&rtd->pcm_mutex);
1239 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients);
1240 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients);
1241 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients);
1242 INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients);
1243 ret = device_add(rtd->dev);
1246 "asoc: failed to register runtime device: %d\n", ret);
1249 rtd->dev_registered = 1;
1251 /* add DAPM sysfs entries for this codec */
1252 ret = snd_soc_dapm_sys_add(rtd->dev);
1255 "asoc: failed to add codec dapm sysfs entries: %d\n",
1258 /* add codec sysfs entries */
1259 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1262 "asoc: failed to add codec sysfs files: %d\n", ret);
1264 #ifdef CONFIG_DEBUG_FS
1265 /* add DPCM sysfs entries */
1266 if (!dailess && !dai_link->dynamic)
1269 ret = soc_dpcm_debugfs_add(rtd);
1271 dev_err(rtd->dev, "asoc: failed to add dpcm sysfs entries: %d\n", ret);
1278 static int soc_probe_link_components(struct snd_soc_card *card, int num,
1281 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1282 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1283 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1284 struct snd_soc_platform *platform = rtd->platform;
1287 /* probe the CPU-side component, if it is a CODEC */
1288 if (cpu_dai->codec &&
1289 !cpu_dai->codec->probed &&
1290 cpu_dai->codec->driver->probe_order == order) {
1291 ret = soc_probe_codec(card, cpu_dai->codec);
1296 /* probe the CODEC-side component */
1297 if (!codec_dai->codec->probed &&
1298 codec_dai->codec->driver->probe_order == order) {
1299 ret = soc_probe_codec(card, codec_dai->codec);
1304 /* probe the platform */
1305 if (!platform->probed &&
1306 platform->driver->probe_order == order) {
1307 ret = soc_probe_platform(card, platform);
1315 static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order)
1317 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1318 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1319 struct snd_soc_codec *codec = rtd->codec;
1320 struct snd_soc_platform *platform = rtd->platform;
1321 struct snd_soc_dai *codec_dai = rtd->codec_dai;
1322 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1323 struct snd_soc_dapm_widget *play_w, *capture_w;
1326 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1327 card->name, num, order);
1329 /* config components */
1330 cpu_dai->platform = platform;
1331 codec_dai->card = card;
1332 cpu_dai->card = card;
1334 /* set default power off timeout */
1335 rtd->pmdown_time = pmdown_time;
1337 /* probe the cpu_dai */
1338 if (!cpu_dai->probed &&
1339 cpu_dai->driver->probe_order == order) {
1340 if (!cpu_dai->codec) {
1341 cpu_dai->dapm.card = card;
1342 if (!try_module_get(cpu_dai->dev->driver->owner))
1345 list_add(&cpu_dai->dapm.list, &card->dapm_list);
1346 snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai);
1349 if (cpu_dai->driver->probe) {
1350 ret = cpu_dai->driver->probe(cpu_dai);
1352 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1353 cpu_dai->name, ret);
1354 module_put(cpu_dai->dev->driver->owner);
1358 cpu_dai->probed = 1;
1359 /* mark cpu_dai as probed and add to card dai list */
1360 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1363 /* probe the CODEC DAI */
1364 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1365 if (codec_dai->driver->probe) {
1366 ret = codec_dai->driver->probe(codec_dai);
1368 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1369 codec_dai->name, ret);
1374 /* mark codec_dai as probed and add to card dai list */
1375 codec_dai->probed = 1;
1376 list_add(&codec_dai->card_list, &card->dai_dev_list);
1379 /* complete DAI probe during last probe */
1380 if (order != SND_SOC_COMP_ORDER_LAST)
1383 ret = soc_post_component_init(card, codec, num, 0);
1387 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1389 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
1391 if (!dai_link->params) {
1392 /* create the pcm */
1393 ret = soc_new_pcm(rtd, num);
1395 pr_err("asoc: can't create pcm %s :%d\n",
1396 dai_link->stream_name, ret);
1400 /* link the DAI widgets */
1401 play_w = codec_dai->playback_widget;
1402 capture_w = cpu_dai->capture_widget;
1403 if (play_w && capture_w) {
1404 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1407 dev_err(card->dev, "Can't link %s to %s: %d\n",
1408 play_w->name, capture_w->name, ret);
1413 play_w = cpu_dai->playback_widget;
1414 capture_w = codec_dai->capture_widget;
1415 if (play_w && capture_w) {
1416 ret = snd_soc_dapm_new_pcm(card, dai_link->params,
1419 dev_err(card->dev, "Can't link %s to %s: %d\n",
1420 play_w->name, capture_w->name, ret);
1426 /* add platform data for AC97 devices */
1427 if (rtd->codec_dai->driver->ac97_control)
1428 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1433 #ifdef CONFIG_SND_SOC_AC97_BUS
1434 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1438 /* Only instantiate AC97 if not already done by the adaptor
1439 * for the generic AC97 subsystem.
1441 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1443 * It is possible that the AC97 device is already registered to
1444 * the device subsystem. This happens when the device is created
1445 * via snd_ac97_mixer(). Currently only SoC codec that does so
1446 * is the generic AC97 glue but others migh emerge.
1448 * In those cases we don't try to register the device again.
1450 if (!rtd->codec->ac97_created)
1453 ret = soc_ac97_dev_register(rtd->codec);
1455 pr_err("asoc: AC97 device register failed:%d\n", ret);
1459 rtd->codec->ac97_registered = 1;
1464 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1466 if (codec->ac97_registered) {
1467 soc_ac97_dev_unregister(codec);
1468 codec->ac97_registered = 0;
1473 static int soc_check_aux_dev(struct snd_soc_card *card, int num)
1475 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1476 struct snd_soc_codec *codec;
1478 /* find CODEC from registered CODECs*/
1479 list_for_each_entry(codec, &codec_list, list) {
1480 if (!strcmp(codec->name, aux_dev->codec_name))
1484 dev_err(card->dev, "%s not registered\n", aux_dev->codec_name);
1486 return -EPROBE_DEFER;
1489 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1491 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1492 struct snd_soc_codec *codec;
1495 /* find CODEC from registered CODECs*/
1496 list_for_each_entry(codec, &codec_list, list) {
1497 if (!strcmp(codec->name, aux_dev->codec_name)) {
1498 if (codec->probed) {
1500 "asoc: codec already probed");
1507 /* codec not found */
1508 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1509 return -EPROBE_DEFER;
1512 ret = soc_probe_codec(card, codec);
1516 ret = soc_post_component_init(card, codec, num, 1);
1522 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1524 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1525 struct snd_soc_codec *codec = rtd->codec;
1527 /* unregister the rtd device */
1528 if (rtd->dev_registered) {
1529 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1530 device_del(rtd->dev);
1531 rtd->dev_registered = 0;
1534 if (codec && codec->probed)
1535 soc_remove_codec(codec);
1538 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1539 enum snd_soc_compress_type compress_type)
1543 if (codec->cache_init)
1546 /* override the compress_type if necessary */
1547 if (compress_type && codec->compress_type != compress_type)
1548 codec->compress_type = compress_type;
1549 ret = snd_soc_cache_init(codec);
1551 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1555 codec->cache_init = 1;
1559 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1561 struct snd_soc_codec *codec;
1562 struct snd_soc_codec_conf *codec_conf;
1563 enum snd_soc_compress_type compress_type;
1564 struct snd_soc_dai_link *dai_link;
1565 int ret, i, order, dai_fmt;
1567 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1570 for (i = 0; i < card->num_links; i++) {
1571 ret = soc_bind_dai_link(card, i);
1576 /* check aux_devs too */
1577 for (i = 0; i < card->num_aux_devs; i++) {
1578 ret = soc_check_aux_dev(card, i);
1583 /* initialize the register cache for each available codec */
1584 list_for_each_entry(codec, &codec_list, list) {
1585 if (codec->cache_init)
1587 /* by default we don't override the compress_type */
1589 /* check to see if we need to override the compress_type */
1590 for (i = 0; i < card->num_configs; ++i) {
1591 codec_conf = &card->codec_conf[i];
1592 if (!strcmp(codec->name, codec_conf->dev_name)) {
1593 compress_type = codec_conf->compress_type;
1594 if (compress_type && compress_type
1595 != codec->compress_type)
1599 ret = snd_soc_init_codec_cache(codec, compress_type);
1604 /* card bind complete so register a sound card */
1605 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1606 card->owner, 0, &card->snd_card);
1608 pr_err("asoc: can't create sound card for card %s: %d\n",
1612 card->snd_card->dev = card->dev;
1614 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1615 card->dapm.dev = card->dev;
1616 card->dapm.card = card;
1617 list_add(&card->dapm.list, &card->dapm_list);
1619 #ifdef CONFIG_DEBUG_FS
1620 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1623 #ifdef CONFIG_PM_SLEEP
1624 /* deferred resume work */
1625 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1628 if (card->dapm_widgets)
1629 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1630 card->num_dapm_widgets);
1632 /* initialise the sound card only once */
1634 ret = card->probe(card);
1636 goto card_probe_error;
1639 /* probe all components used by DAI links on this card */
1640 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1642 for (i = 0; i < card->num_links; i++) {
1643 ret = soc_probe_link_components(card, i, order);
1645 pr_err("asoc: failed to instantiate card %s: %d\n",
1652 /* probe all DAI links on this card */
1653 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1655 for (i = 0; i < card->num_links; i++) {
1656 ret = soc_probe_link_dais(card, i, order);
1658 pr_err("asoc: failed to instantiate card %s: %d\n",
1665 for (i = 0; i < card->num_aux_devs; i++) {
1666 ret = soc_probe_aux_dev(card, i);
1668 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1670 goto probe_aux_dev_err;
1674 snd_soc_dapm_link_dai_widgets(card);
1677 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1679 if (card->dapm_routes)
1680 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1681 card->num_dapm_routes);
1683 snd_soc_dapm_new_widgets(&card->dapm);
1685 for (i = 0; i < card->num_links; i++) {
1686 dai_link = &card->dai_link[i];
1687 dai_fmt = dai_link->dai_fmt;
1690 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1692 if (ret != 0 && ret != -ENOTSUPP)
1693 dev_warn(card->rtd[i].codec_dai->dev,
1694 "Failed to set DAI format: %d\n",
1698 /* If this is a regular CPU link there will be a platform */
1700 (dai_link->platform_name || dai_link->platform_of_node)) {
1701 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1703 if (ret != 0 && ret != -ENOTSUPP)
1704 dev_warn(card->rtd[i].cpu_dai->dev,
1705 "Failed to set DAI format: %d\n",
1707 } else if (dai_fmt) {
1708 /* Flip the polarity for the "CPU" end */
1709 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1710 switch (dai_link->dai_fmt &
1711 SND_SOC_DAIFMT_MASTER_MASK) {
1712 case SND_SOC_DAIFMT_CBM_CFM:
1713 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1715 case SND_SOC_DAIFMT_CBM_CFS:
1716 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1718 case SND_SOC_DAIFMT_CBS_CFM:
1719 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1721 case SND_SOC_DAIFMT_CBS_CFS:
1722 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1726 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1728 if (ret != 0 && ret != -ENOTSUPP)
1729 dev_warn(card->rtd[i].cpu_dai->dev,
1730 "Failed to set DAI format: %d\n",
1735 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1737 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1738 "%s", card->long_name ? card->long_name : card->name);
1739 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1740 "%s", card->driver_name ? card->driver_name : card->name);
1741 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1742 switch (card->snd_card->driver[i]) {
1748 if (!isalnum(card->snd_card->driver[i]))
1749 card->snd_card->driver[i] = '_';
1754 if (card->late_probe) {
1755 ret = card->late_probe(card);
1757 dev_err(card->dev, "%s late_probe() failed: %d\n",
1759 goto probe_aux_dev_err;
1763 snd_soc_dapm_new_widgets(&card->dapm);
1765 if (card->fully_routed)
1766 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1767 snd_soc_dapm_auto_nc_codec_pins(codec);
1769 ret = snd_card_register(card->snd_card);
1771 pr_err("asoc: failed to register soundcard for %s: %d\n",
1773 goto probe_aux_dev_err;
1776 #ifdef CONFIG_SND_SOC_AC97_BUS
1777 /* register any AC97 codecs */
1778 for (i = 0; i < card->num_rtd; i++) {
1779 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1781 pr_err("asoc: failed to register AC97 %s: %d\n",
1784 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1785 goto probe_aux_dev_err;
1790 card->instantiated = 1;
1791 snd_soc_dapm_sync(&card->dapm);
1792 mutex_unlock(&card->mutex);
1797 for (i = 0; i < card->num_aux_devs; i++)
1798 soc_remove_aux_dev(card, i);
1801 soc_remove_dai_links(card);
1807 snd_card_free(card->snd_card);
1810 mutex_unlock(&card->mutex);
1815 /* probes a new socdev */
1816 static int soc_probe(struct platform_device *pdev)
1818 struct snd_soc_card *card = platform_get_drvdata(pdev);
1822 * no card, so machine driver should be registering card
1823 * we should not be here in that case so ret error
1828 dev_warn(&pdev->dev,
1829 "ASoC machine %s should use snd_soc_register_card()\n",
1832 /* Bodge while we unpick instantiation */
1833 card->dev = &pdev->dev;
1835 ret = snd_soc_register_card(card);
1837 dev_err(&pdev->dev, "Failed to register card\n");
1844 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1848 /* make sure any delayed work runs */
1849 for (i = 0; i < card->num_rtd; i++) {
1850 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1851 flush_delayed_work_sync(&rtd->delayed_work);
1854 /* remove auxiliary devices */
1855 for (i = 0; i < card->num_aux_devs; i++)
1856 soc_remove_aux_dev(card, i);
1858 /* remove and free each DAI */
1859 soc_remove_dai_links(card);
1861 soc_cleanup_card_debugfs(card);
1863 /* remove the card */
1867 snd_soc_dapm_free(&card->dapm);
1869 snd_card_free(card->snd_card);
1874 /* removes a socdev */
1875 static int soc_remove(struct platform_device *pdev)
1877 struct snd_soc_card *card = platform_get_drvdata(pdev);
1879 snd_soc_unregister_card(card);
1883 int snd_soc_poweroff(struct device *dev)
1885 struct snd_soc_card *card = dev_get_drvdata(dev);
1888 if (!card->instantiated)
1891 /* Flush out pmdown_time work - we actually do want to run it
1892 * now, we're shutting down so no imminent restart. */
1893 for (i = 0; i < card->num_rtd; i++) {
1894 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1895 flush_delayed_work_sync(&rtd->delayed_work);
1898 snd_soc_dapm_shutdown(card);
1902 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1904 const struct dev_pm_ops snd_soc_pm_ops = {
1905 .suspend = snd_soc_suspend,
1906 .resume = snd_soc_resume,
1907 .freeze = snd_soc_suspend,
1908 .thaw = snd_soc_resume,
1909 .poweroff = snd_soc_poweroff,
1910 .restore = snd_soc_resume,
1912 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1914 /* ASoC platform driver */
1915 static struct platform_driver soc_driver = {
1917 .name = "soc-audio",
1918 .owner = THIS_MODULE,
1919 .pm = &snd_soc_pm_ops,
1922 .remove = soc_remove,
1926 * snd_soc_codec_volatile_register: Report if a register is volatile.
1928 * @codec: CODEC to query.
1929 * @reg: Register to query.
1931 * Boolean function indiciating if a CODEC register is volatile.
1933 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1936 if (codec->volatile_register)
1937 return codec->volatile_register(codec, reg);
1941 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1944 * snd_soc_codec_readable_register: Report if a register is readable.
1946 * @codec: CODEC to query.
1947 * @reg: Register to query.
1949 * Boolean function indicating if a CODEC register is readable.
1951 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1954 if (codec->readable_register)
1955 return codec->readable_register(codec, reg);
1959 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1962 * snd_soc_codec_writable_register: Report if a register is writable.
1964 * @codec: CODEC to query.
1965 * @reg: Register to query.
1967 * Boolean function indicating if a CODEC register is writable.
1969 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1972 if (codec->writable_register)
1973 return codec->writable_register(codec, reg);
1977 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1979 int snd_soc_platform_read(struct snd_soc_platform *platform,
1984 if (!platform->driver->read) {
1985 dev_err(platform->dev, "platform has no read back\n");
1989 ret = platform->driver->read(platform, reg);
1990 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1991 trace_snd_soc_preg_read(platform, reg, ret);
1995 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1997 int snd_soc_platform_write(struct snd_soc_platform *platform,
1998 unsigned int reg, unsigned int val)
2000 if (!platform->driver->write) {
2001 dev_err(platform->dev, "platform has no write back\n");
2005 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2006 trace_snd_soc_preg_write(platform, reg, val);
2007 return platform->driver->write(platform, reg, val);
2009 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2012 * snd_soc_new_ac97_codec - initailise AC97 device
2013 * @codec: audio codec
2014 * @ops: AC97 bus operations
2015 * @num: AC97 codec number
2017 * Initialises AC97 codec resources for use by ad-hoc devices only.
2019 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2020 struct snd_ac97_bus_ops *ops, int num)
2022 mutex_lock(&codec->mutex);
2024 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2025 if (codec->ac97 == NULL) {
2026 mutex_unlock(&codec->mutex);
2030 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2031 if (codec->ac97->bus == NULL) {
2034 mutex_unlock(&codec->mutex);
2038 codec->ac97->bus->ops = ops;
2039 codec->ac97->num = num;
2042 * Mark the AC97 device to be created by us. This way we ensure that the
2043 * device will be registered with the device subsystem later on.
2045 codec->ac97_created = 1;
2047 mutex_unlock(&codec->mutex);
2050 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2053 * snd_soc_free_ac97_codec - free AC97 codec device
2054 * @codec: audio codec
2056 * Frees AC97 codec device resources.
2058 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2060 mutex_lock(&codec->mutex);
2061 #ifdef CONFIG_SND_SOC_AC97_BUS
2062 soc_unregister_ac97_dai_link(codec);
2064 kfree(codec->ac97->bus);
2067 codec->ac97_created = 0;
2068 mutex_unlock(&codec->mutex);
2070 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2072 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2076 ret = codec->read(codec, reg);
2077 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2078 trace_snd_soc_reg_read(codec, reg, ret);
2082 EXPORT_SYMBOL_GPL(snd_soc_read);
2084 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2085 unsigned int reg, unsigned int val)
2087 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2088 trace_snd_soc_reg_write(codec, reg, val);
2089 return codec->write(codec, reg, val);
2091 EXPORT_SYMBOL_GPL(snd_soc_write);
2093 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2094 unsigned int reg, const void *data, size_t len)
2096 return codec->bulk_write_raw(codec, reg, data, len);
2098 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2101 * snd_soc_update_bits - update codec register bits
2102 * @codec: audio codec
2103 * @reg: codec register
2104 * @mask: register mask
2107 * Writes new register value.
2109 * Returns 1 for change, 0 for no change, or negative error code.
2111 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2112 unsigned int mask, unsigned int value)
2115 unsigned int old, new;
2118 if (codec->using_regmap) {
2119 ret = regmap_update_bits_check(codec->control_data, reg,
2120 mask, value, &change);
2122 ret = snd_soc_read(codec, reg);
2127 new = (old & ~mask) | (value & mask);
2128 change = old != new;
2130 ret = snd_soc_write(codec, reg, new);
2138 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2141 * snd_soc_update_bits_locked - update codec register bits
2142 * @codec: audio codec
2143 * @reg: codec register
2144 * @mask: register mask
2147 * Writes new register value, and takes the codec mutex.
2149 * Returns 1 for change else 0.
2151 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2152 unsigned short reg, unsigned int mask,
2157 mutex_lock(&codec->mutex);
2158 change = snd_soc_update_bits(codec, reg, mask, value);
2159 mutex_unlock(&codec->mutex);
2163 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2166 * snd_soc_test_bits - test register for change
2167 * @codec: audio codec
2168 * @reg: codec register
2169 * @mask: register mask
2172 * Tests a register with a new value and checks if the new value is
2173 * different from the old value.
2175 * Returns 1 for change else 0.
2177 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2178 unsigned int mask, unsigned int value)
2181 unsigned int old, new;
2183 old = snd_soc_read(codec, reg);
2184 new = (old & ~mask) | value;
2185 change = old != new;
2189 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2192 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2193 * @substream: the pcm substream
2194 * @hw: the hardware parameters
2196 * Sets the substream runtime hardware parameters.
2198 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2199 const struct snd_pcm_hardware *hw)
2201 struct snd_pcm_runtime *runtime = substream->runtime;
2202 runtime->hw.info = hw->info;
2203 runtime->hw.formats = hw->formats;
2204 runtime->hw.period_bytes_min = hw->period_bytes_min;
2205 runtime->hw.period_bytes_max = hw->period_bytes_max;
2206 runtime->hw.periods_min = hw->periods_min;
2207 runtime->hw.periods_max = hw->periods_max;
2208 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2209 runtime->hw.fifo_size = hw->fifo_size;
2212 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2215 * snd_soc_cnew - create new control
2216 * @_template: control template
2217 * @data: control private data
2218 * @long_name: control long name
2219 * @prefix: control name prefix
2221 * Create a new mixer control from a template control.
2223 * Returns 0 for success, else error.
2225 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2226 void *data, const char *long_name,
2229 struct snd_kcontrol_new template;
2230 struct snd_kcontrol *kcontrol;
2234 memcpy(&template, _template, sizeof(template));
2238 long_name = template.name;
2241 name_len = strlen(long_name) + strlen(prefix) + 2;
2242 name = kmalloc(name_len, GFP_KERNEL);
2246 snprintf(name, name_len, "%s %s", prefix, long_name);
2248 template.name = name;
2250 template.name = long_name;
2253 kcontrol = snd_ctl_new1(&template, data);
2259 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2261 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2262 const struct snd_kcontrol_new *controls, int num_controls,
2263 const char *prefix, void *data)
2267 for (i = 0; i < num_controls; i++) {
2268 const struct snd_kcontrol_new *control = &controls[i];
2269 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2270 control->name, prefix));
2272 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2281 * snd_soc_add_codec_controls - add an array of controls to a codec.
2282 * Convenience function to add a list of controls. Many codecs were
2283 * duplicating this code.
2285 * @codec: codec to add controls to
2286 * @controls: array of controls to add
2287 * @num_controls: number of elements in the array
2289 * Return 0 for success, else error.
2291 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2292 const struct snd_kcontrol_new *controls, int num_controls)
2294 struct snd_card *card = codec->card->snd_card;
2296 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2297 codec->name_prefix, codec);
2299 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2302 * snd_soc_add_platform_controls - add an array of controls to a platform.
2303 * Convenience function to add a list of controls.
2305 * @platform: platform to add controls to
2306 * @controls: array of controls to add
2307 * @num_controls: number of elements in the array
2309 * Return 0 for success, else error.
2311 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2312 const struct snd_kcontrol_new *controls, int num_controls)
2314 struct snd_card *card = platform->card->snd_card;
2316 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2319 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2322 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2323 * Convenience function to add a list of controls.
2325 * @soc_card: SoC card to add controls to
2326 * @controls: array of controls to add
2327 * @num_controls: number of elements in the array
2329 * Return 0 for success, else error.
2331 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2332 const struct snd_kcontrol_new *controls, int num_controls)
2334 struct snd_card *card = soc_card->snd_card;
2336 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2339 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2342 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2343 * Convienience function to add a list of controls.
2345 * @dai: DAI to add controls to
2346 * @controls: array of controls to add
2347 * @num_controls: number of elements in the array
2349 * Return 0 for success, else error.
2351 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2352 const struct snd_kcontrol_new *controls, int num_controls)
2354 struct snd_card *card = dai->card->snd_card;
2356 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2359 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2362 * snd_soc_info_enum_double - enumerated double mixer info callback
2363 * @kcontrol: mixer control
2364 * @uinfo: control element information
2366 * Callback to provide information about a double enumerated
2369 * Returns 0 for success.
2371 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2372 struct snd_ctl_elem_info *uinfo)
2374 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2376 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2377 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2378 uinfo->value.enumerated.items = e->max;
2380 if (uinfo->value.enumerated.item > e->max - 1)
2381 uinfo->value.enumerated.item = e->max - 1;
2382 strcpy(uinfo->value.enumerated.name,
2383 e->texts[uinfo->value.enumerated.item]);
2386 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2389 * snd_soc_get_enum_double - enumerated double mixer get callback
2390 * @kcontrol: mixer control
2391 * @ucontrol: control element information
2393 * Callback to get the value of a double enumerated mixer.
2395 * Returns 0 for success.
2397 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2398 struct snd_ctl_elem_value *ucontrol)
2400 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2401 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2402 unsigned int val, bitmask;
2404 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2406 val = snd_soc_read(codec, e->reg);
2407 ucontrol->value.enumerated.item[0]
2408 = (val >> e->shift_l) & (bitmask - 1);
2409 if (e->shift_l != e->shift_r)
2410 ucontrol->value.enumerated.item[1] =
2411 (val >> e->shift_r) & (bitmask - 1);
2415 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2418 * snd_soc_put_enum_double - enumerated double mixer put callback
2419 * @kcontrol: mixer control
2420 * @ucontrol: control element information
2422 * Callback to set the value of a double enumerated mixer.
2424 * Returns 0 for success.
2426 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2427 struct snd_ctl_elem_value *ucontrol)
2429 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2430 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2432 unsigned int mask, bitmask;
2434 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2436 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2438 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2439 mask = (bitmask - 1) << e->shift_l;
2440 if (e->shift_l != e->shift_r) {
2441 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2443 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2444 mask |= (bitmask - 1) << e->shift_r;
2447 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2449 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2452 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2453 * @kcontrol: mixer control
2454 * @ucontrol: control element information
2456 * Callback to get the value of a double semi enumerated mixer.
2458 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2459 * used for handling bitfield coded enumeration for example.
2461 * Returns 0 for success.
2463 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2464 struct snd_ctl_elem_value *ucontrol)
2466 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2467 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2468 unsigned int reg_val, val, mux;
2470 reg_val = snd_soc_read(codec, e->reg);
2471 val = (reg_val >> e->shift_l) & e->mask;
2472 for (mux = 0; mux < e->max; mux++) {
2473 if (val == e->values[mux])
2476 ucontrol->value.enumerated.item[0] = mux;
2477 if (e->shift_l != e->shift_r) {
2478 val = (reg_val >> e->shift_r) & e->mask;
2479 for (mux = 0; mux < e->max; mux++) {
2480 if (val == e->values[mux])
2483 ucontrol->value.enumerated.item[1] = mux;
2488 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2491 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2492 * @kcontrol: mixer control
2493 * @ucontrol: control element information
2495 * Callback to set the value of a double semi enumerated mixer.
2497 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2498 * used for handling bitfield coded enumeration for example.
2500 * Returns 0 for success.
2502 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2503 struct snd_ctl_elem_value *ucontrol)
2505 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2506 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2510 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2512 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2513 mask = e->mask << e->shift_l;
2514 if (e->shift_l != e->shift_r) {
2515 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2517 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2518 mask |= e->mask << e->shift_r;
2521 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2523 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2526 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2527 * @kcontrol: mixer control
2528 * @uinfo: control element information
2530 * Callback to provide information about an external enumerated
2533 * Returns 0 for success.
2535 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2536 struct snd_ctl_elem_info *uinfo)
2538 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2540 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2542 uinfo->value.enumerated.items = e->max;
2544 if (uinfo->value.enumerated.item > e->max - 1)
2545 uinfo->value.enumerated.item = e->max - 1;
2546 strcpy(uinfo->value.enumerated.name,
2547 e->texts[uinfo->value.enumerated.item]);
2550 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2553 * snd_soc_info_volsw_ext - external single mixer info callback
2554 * @kcontrol: mixer control
2555 * @uinfo: control element information
2557 * Callback to provide information about a single external mixer control.
2559 * Returns 0 for success.
2561 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2562 struct snd_ctl_elem_info *uinfo)
2564 int max = kcontrol->private_value;
2566 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2567 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2569 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2572 uinfo->value.integer.min = 0;
2573 uinfo->value.integer.max = max;
2576 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2579 * snd_soc_info_volsw - single mixer info callback
2580 * @kcontrol: mixer control
2581 * @uinfo: control element information
2583 * Callback to provide information about a single mixer control, or a double
2584 * mixer control that spans 2 registers.
2586 * Returns 0 for success.
2588 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2589 struct snd_ctl_elem_info *uinfo)
2591 struct soc_mixer_control *mc =
2592 (struct soc_mixer_control *)kcontrol->private_value;
2595 if (!mc->platform_max)
2596 mc->platform_max = mc->max;
2597 platform_max = mc->platform_max;
2599 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2600 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2602 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2604 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2605 uinfo->value.integer.min = 0;
2606 uinfo->value.integer.max = platform_max;
2609 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2612 * snd_soc_get_volsw - single mixer get callback
2613 * @kcontrol: mixer control
2614 * @ucontrol: control element information
2616 * Callback to get the value of a single mixer control, or a double mixer
2617 * control that spans 2 registers.
2619 * Returns 0 for success.
2621 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2622 struct snd_ctl_elem_value *ucontrol)
2624 struct soc_mixer_control *mc =
2625 (struct soc_mixer_control *)kcontrol->private_value;
2626 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2627 unsigned int reg = mc->reg;
2628 unsigned int reg2 = mc->rreg;
2629 unsigned int shift = mc->shift;
2630 unsigned int rshift = mc->rshift;
2632 unsigned int mask = (1 << fls(max)) - 1;
2633 unsigned int invert = mc->invert;
2635 ucontrol->value.integer.value[0] =
2636 (snd_soc_read(codec, reg) >> shift) & mask;
2638 ucontrol->value.integer.value[0] =
2639 max - ucontrol->value.integer.value[0];
2641 if (snd_soc_volsw_is_stereo(mc)) {
2643 ucontrol->value.integer.value[1] =
2644 (snd_soc_read(codec, reg) >> rshift) & mask;
2646 ucontrol->value.integer.value[1] =
2647 (snd_soc_read(codec, reg2) >> shift) & mask;
2649 ucontrol->value.integer.value[1] =
2650 max - ucontrol->value.integer.value[1];
2655 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2658 * snd_soc_put_volsw - single mixer put callback
2659 * @kcontrol: mixer control
2660 * @ucontrol: control element information
2662 * Callback to set the value of a single mixer control, or a double mixer
2663 * control that spans 2 registers.
2665 * Returns 0 for success.
2667 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2668 struct snd_ctl_elem_value *ucontrol)
2670 struct soc_mixer_control *mc =
2671 (struct soc_mixer_control *)kcontrol->private_value;
2672 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2673 unsigned int reg = mc->reg;
2674 unsigned int reg2 = mc->rreg;
2675 unsigned int shift = mc->shift;
2676 unsigned int rshift = mc->rshift;
2678 unsigned int mask = (1 << fls(max)) - 1;
2679 unsigned int invert = mc->invert;
2682 unsigned int val2 = 0;
2683 unsigned int val, val_mask;
2685 val = (ucontrol->value.integer.value[0] & mask);
2688 val_mask = mask << shift;
2690 if (snd_soc_volsw_is_stereo(mc)) {
2691 val2 = (ucontrol->value.integer.value[1] & mask);
2695 val_mask |= mask << rshift;
2696 val |= val2 << rshift;
2698 val2 = val2 << shift;
2702 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2707 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2711 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2714 * snd_soc_get_volsw_sx - single mixer get callback
2715 * @kcontrol: mixer control
2716 * @ucontrol: control element information
2718 * Callback to get the value of a single mixer control, or a double mixer
2719 * control that spans 2 registers.
2721 * Returns 0 for success.
2723 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2724 struct snd_ctl_elem_value *ucontrol)
2726 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2727 struct soc_mixer_control *mc =
2728 (struct soc_mixer_control *)kcontrol->private_value;
2730 unsigned int reg = mc->reg;
2731 unsigned int reg2 = mc->rreg;
2732 unsigned int shift = mc->shift;
2733 unsigned int rshift = mc->rshift;
2736 int mask = (1 << (fls(min + max) - 1)) - 1;
2738 ucontrol->value.integer.value[0] =
2739 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2741 if (snd_soc_volsw_is_stereo(mc))
2742 ucontrol->value.integer.value[1] =
2743 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2747 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2750 * snd_soc_put_volsw_sx - double mixer set callback
2751 * @kcontrol: mixer control
2752 * @uinfo: control element information
2754 * Callback to set the value of a double mixer control that spans 2 registers.
2756 * Returns 0 for success.
2758 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2759 struct snd_ctl_elem_value *ucontrol)
2761 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2762 struct soc_mixer_control *mc =
2763 (struct soc_mixer_control *)kcontrol->private_value;
2765 unsigned int reg = mc->reg;
2766 unsigned int reg2 = mc->rreg;
2767 unsigned int shift = mc->shift;
2768 unsigned int rshift = mc->rshift;
2771 int mask = (1 << (fls(min + max) - 1)) - 1;
2773 unsigned short val, val_mask, val2 = 0;
2775 val_mask = mask << shift;
2776 val = (ucontrol->value.integer.value[0] + min) & mask;
2779 if (snd_soc_update_bits_locked(codec, reg, val_mask, val))
2782 if (snd_soc_volsw_is_stereo(mc)) {
2783 val_mask = mask << rshift;
2784 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2785 val2 = val2 << rshift;
2787 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2792 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2795 * snd_soc_info_volsw_s8 - signed mixer info callback
2796 * @kcontrol: mixer control
2797 * @uinfo: control element information
2799 * Callback to provide information about a signed mixer control.
2801 * Returns 0 for success.
2803 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2804 struct snd_ctl_elem_info *uinfo)
2806 struct soc_mixer_control *mc =
2807 (struct soc_mixer_control *)kcontrol->private_value;
2811 if (!mc->platform_max)
2812 mc->platform_max = mc->max;
2813 platform_max = mc->platform_max;
2815 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2817 uinfo->value.integer.min = 0;
2818 uinfo->value.integer.max = platform_max - min;
2821 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2824 * snd_soc_get_volsw_s8 - signed mixer get callback
2825 * @kcontrol: mixer control
2826 * @ucontrol: control element information
2828 * Callback to get the value of a signed mixer control.
2830 * Returns 0 for success.
2832 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2833 struct snd_ctl_elem_value *ucontrol)
2835 struct soc_mixer_control *mc =
2836 (struct soc_mixer_control *)kcontrol->private_value;
2837 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2838 unsigned int reg = mc->reg;
2840 int val = snd_soc_read(codec, reg);
2842 ucontrol->value.integer.value[0] =
2843 ((signed char)(val & 0xff))-min;
2844 ucontrol->value.integer.value[1] =
2845 ((signed char)((val >> 8) & 0xff))-min;
2848 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2851 * snd_soc_put_volsw_sgn - signed mixer put callback
2852 * @kcontrol: mixer control
2853 * @ucontrol: control element information
2855 * Callback to set the value of a signed mixer control.
2857 * Returns 0 for success.
2859 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2860 struct snd_ctl_elem_value *ucontrol)
2862 struct soc_mixer_control *mc =
2863 (struct soc_mixer_control *)kcontrol->private_value;
2864 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2865 unsigned int reg = mc->reg;
2869 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2870 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2872 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2874 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2877 * snd_soc_info_volsw_range - single mixer info callback with range.
2878 * @kcontrol: mixer control
2879 * @uinfo: control element information
2881 * Callback to provide information, within a range, about a single
2884 * returns 0 for success.
2886 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2887 struct snd_ctl_elem_info *uinfo)
2889 struct soc_mixer_control *mc =
2890 (struct soc_mixer_control *)kcontrol->private_value;
2894 if (!mc->platform_max)
2895 mc->platform_max = mc->max;
2896 platform_max = mc->platform_max;
2898 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2900 uinfo->value.integer.min = 0;
2901 uinfo->value.integer.max = platform_max - min;
2905 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2908 * snd_soc_put_volsw_range - single mixer put value callback with range.
2909 * @kcontrol: mixer control
2910 * @ucontrol: control element information
2912 * Callback to set the value, within a range, for a single mixer control.
2914 * Returns 0 for success.
2916 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2917 struct snd_ctl_elem_value *ucontrol)
2919 struct soc_mixer_control *mc =
2920 (struct soc_mixer_control *)kcontrol->private_value;
2921 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2922 unsigned int reg = mc->reg;
2923 unsigned int shift = mc->shift;
2926 unsigned int mask = (1 << fls(max)) - 1;
2927 unsigned int invert = mc->invert;
2928 unsigned int val, val_mask;
2930 val = ((ucontrol->value.integer.value[0] + min) & mask);
2933 val_mask = mask << shift;
2936 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2938 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2941 * snd_soc_get_volsw_range - single mixer get callback with range
2942 * @kcontrol: mixer control
2943 * @ucontrol: control element information
2945 * Callback to get the value, within a range, of a single mixer control.
2947 * Returns 0 for success.
2949 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
2950 struct snd_ctl_elem_value *ucontrol)
2952 struct soc_mixer_control *mc =
2953 (struct soc_mixer_control *)kcontrol->private_value;
2954 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2955 unsigned int reg = mc->reg;
2956 unsigned int shift = mc->shift;
2959 unsigned int mask = (1 << fls(max)) - 1;
2960 unsigned int invert = mc->invert;
2962 ucontrol->value.integer.value[0] =
2963 (snd_soc_read(codec, reg) >> shift) & mask;
2965 ucontrol->value.integer.value[0] =
2966 max - ucontrol->value.integer.value[0];
2967 ucontrol->value.integer.value[0] =
2968 ucontrol->value.integer.value[0] - min;
2972 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
2975 * snd_soc_limit_volume - Set new limit to an existing volume control.
2977 * @codec: where to look for the control
2978 * @name: Name of the control
2979 * @max: new maximum limit
2981 * Return 0 for success, else error.
2983 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2984 const char *name, int max)
2986 struct snd_card *card = codec->card->snd_card;
2987 struct snd_kcontrol *kctl;
2988 struct soc_mixer_control *mc;
2992 /* Sanity check for name and max */
2993 if (unlikely(!name || max <= 0))
2996 list_for_each_entry(kctl, &card->controls, list) {
2997 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3003 mc = (struct soc_mixer_control *)kctl->private_value;
3004 if (max <= mc->max) {
3005 mc->platform_max = max;
3011 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3013 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3014 struct snd_ctl_elem_info *uinfo)
3016 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3017 struct soc_bytes *params = (void *)kcontrol->private_value;
3019 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3020 uinfo->count = params->num_regs * codec->val_bytes;
3024 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3026 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3027 struct snd_ctl_elem_value *ucontrol)
3029 struct soc_bytes *params = (void *)kcontrol->private_value;
3030 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3033 if (codec->using_regmap)
3034 ret = regmap_raw_read(codec->control_data, params->base,
3035 ucontrol->value.bytes.data,
3036 params->num_regs * codec->val_bytes);
3040 /* Hide any masked bytes to ensure consistent data reporting */
3041 if (ret == 0 && params->mask) {
3042 switch (codec->val_bytes) {
3044 ucontrol->value.bytes.data[0] &= ~params->mask;
3047 ((u16 *)(&ucontrol->value.bytes.data))[0]
3051 ((u32 *)(&ucontrol->value.bytes.data))[0]
3061 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3063 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3064 struct snd_ctl_elem_value *ucontrol)
3066 struct soc_bytes *params = (void *)kcontrol->private_value;
3067 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3072 if (!codec->using_regmap)
3075 data = ucontrol->value.bytes.data;
3076 len = params->num_regs * codec->val_bytes;
3079 * If we've got a mask then we need to preserve the register
3080 * bits. We shouldn't modify the incoming data so take a
3084 ret = regmap_read(codec->control_data, params->base, &val);
3088 val &= params->mask;
3090 data = kmemdup(data, len, GFP_KERNEL);
3094 switch (codec->val_bytes) {
3096 ((u8 *)data)[0] &= ~params->mask;
3097 ((u8 *)data)[0] |= val;
3100 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3101 ((u16 *)data)[0] |= cpu_to_be16(val);
3104 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3105 ((u32 *)data)[0] |= cpu_to_be32(val);
3112 ret = regmap_raw_write(codec->control_data, params->base,
3120 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3123 * snd_soc_info_xr_sx - signed multi register info callback
3124 * @kcontrol: mreg control
3125 * @uinfo: control element information
3127 * Callback to provide information of a control that can
3128 * span multiple codec registers which together
3129 * forms a single signed value in a MSB/LSB manner.
3131 * Returns 0 for success.
3133 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3134 struct snd_ctl_elem_info *uinfo)
3136 struct soc_mreg_control *mc =
3137 (struct soc_mreg_control *)kcontrol->private_value;
3138 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3140 uinfo->value.integer.min = mc->min;
3141 uinfo->value.integer.max = mc->max;
3145 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3148 * snd_soc_get_xr_sx - signed multi register get callback
3149 * @kcontrol: mreg control
3150 * @ucontrol: control element information
3152 * Callback to get the value of a control that can span
3153 * multiple codec registers which together forms a single
3154 * signed value in a MSB/LSB manner. The control supports
3155 * specifying total no of bits used to allow for bitfields
3156 * across the multiple codec registers.
3158 * Returns 0 for success.
3160 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3161 struct snd_ctl_elem_value *ucontrol)
3163 struct soc_mreg_control *mc =
3164 (struct soc_mreg_control *)kcontrol->private_value;
3165 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3166 unsigned int regbase = mc->regbase;
3167 unsigned int regcount = mc->regcount;
3168 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3169 unsigned int regwmask = (1<<regwshift)-1;
3170 unsigned int invert = mc->invert;
3171 unsigned long mask = (1UL<<mc->nbits)-1;
3175 unsigned long regval;
3178 for (i = 0; i < regcount; i++) {
3179 regval = snd_soc_read(codec, regbase+i) & regwmask;
3180 val |= regval << (regwshift*(regcount-i-1));
3183 if (min < 0 && val > max)
3187 ucontrol->value.integer.value[0] = val;
3191 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3194 * snd_soc_put_xr_sx - signed multi register get callback
3195 * @kcontrol: mreg control
3196 * @ucontrol: control element information
3198 * Callback to set the value of a control that can span
3199 * multiple codec registers which together forms a single
3200 * signed value in a MSB/LSB manner. The control supports
3201 * specifying total no of bits used to allow for bitfields
3202 * across the multiple codec registers.
3204 * Returns 0 for success.
3206 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3207 struct snd_ctl_elem_value *ucontrol)
3209 struct soc_mreg_control *mc =
3210 (struct soc_mreg_control *)kcontrol->private_value;
3211 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3212 unsigned int regbase = mc->regbase;
3213 unsigned int regcount = mc->regcount;
3214 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3215 unsigned int regwmask = (1<<regwshift)-1;
3216 unsigned int invert = mc->invert;
3217 unsigned long mask = (1UL<<mc->nbits)-1;
3219 long val = ucontrol->value.integer.value[0];
3220 unsigned int i, regval, regmask;
3226 for (i = 0; i < regcount; i++) {
3227 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3228 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3229 err = snd_soc_update_bits_locked(codec, regbase+i,
3237 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3240 * snd_soc_get_strobe - strobe get callback
3241 * @kcontrol: mixer control
3242 * @ucontrol: control element information
3244 * Callback get the value of a strobe mixer control.
3246 * Returns 0 for success.
3248 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3249 struct snd_ctl_elem_value *ucontrol)
3251 struct soc_mixer_control *mc =
3252 (struct soc_mixer_control *)kcontrol->private_value;
3253 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3254 unsigned int reg = mc->reg;
3255 unsigned int shift = mc->shift;
3256 unsigned int mask = 1 << shift;
3257 unsigned int invert = mc->invert != 0;
3258 unsigned int val = snd_soc_read(codec, reg) & mask;
3260 if (shift != 0 && val != 0)
3262 ucontrol->value.enumerated.item[0] = val ^ invert;
3266 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3269 * snd_soc_put_strobe - strobe put callback
3270 * @kcontrol: mixer control
3271 * @ucontrol: control element information
3273 * Callback strobe a register bit to high then low (or the inverse)
3274 * in one pass of a single mixer enum control.
3276 * Returns 1 for success.
3278 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3279 struct snd_ctl_elem_value *ucontrol)
3281 struct soc_mixer_control *mc =
3282 (struct soc_mixer_control *)kcontrol->private_value;
3283 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3284 unsigned int reg = mc->reg;
3285 unsigned int shift = mc->shift;
3286 unsigned int mask = 1 << shift;
3287 unsigned int invert = mc->invert != 0;
3288 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3289 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3290 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3293 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3297 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3300 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3303 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3305 * @clk_id: DAI specific clock ID
3306 * @freq: new clock frequency in Hz
3307 * @dir: new clock direction - input/output.
3309 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3311 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3312 unsigned int freq, int dir)
3314 if (dai->driver && dai->driver->ops->set_sysclk)
3315 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3316 else if (dai->codec && dai->codec->driver->set_sysclk)
3317 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3322 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3325 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3327 * @clk_id: DAI specific clock ID
3328 * @source: Source for the clock
3329 * @freq: new clock frequency in Hz
3330 * @dir: new clock direction - input/output.
3332 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3334 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3335 int source, unsigned int freq, int dir)
3337 if (codec->driver->set_sysclk)
3338 return codec->driver->set_sysclk(codec, clk_id, source,
3343 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3346 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3348 * @div_id: DAI specific clock divider ID
3349 * @div: new clock divisor.
3351 * Configures the clock dividers. This is used to derive the best DAI bit and
3352 * frame clocks from the system or master clock. It's best to set the DAI bit
3353 * and frame clocks as low as possible to save system power.
3355 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3356 int div_id, int div)
3358 if (dai->driver && dai->driver->ops->set_clkdiv)
3359 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3363 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3366 * snd_soc_dai_set_pll - configure DAI PLL.
3368 * @pll_id: DAI specific PLL ID
3369 * @source: DAI specific source for the PLL
3370 * @freq_in: PLL input clock frequency in Hz
3371 * @freq_out: requested PLL output clock frequency in Hz
3373 * Configures and enables PLL to generate output clock based on input clock.
3375 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3376 unsigned int freq_in, unsigned int freq_out)
3378 if (dai->driver && dai->driver->ops->set_pll)
3379 return dai->driver->ops->set_pll(dai, pll_id, source,
3381 else if (dai->codec && dai->codec->driver->set_pll)
3382 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3387 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3390 * snd_soc_codec_set_pll - configure codec PLL.
3392 * @pll_id: DAI specific PLL ID
3393 * @source: DAI specific source for the PLL
3394 * @freq_in: PLL input clock frequency in Hz
3395 * @freq_out: requested PLL output clock frequency in Hz
3397 * Configures and enables PLL to generate output clock based on input clock.
3399 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3400 unsigned int freq_in, unsigned int freq_out)
3402 if (codec->driver->set_pll)
3403 return codec->driver->set_pll(codec, pll_id, source,
3408 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3411 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3413 * @fmt: SND_SOC_DAIFMT_ format value.
3415 * Configures the DAI hardware format and clocking.
3417 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3419 if (dai->driver == NULL)
3421 if (dai->driver->ops->set_fmt == NULL)
3423 return dai->driver->ops->set_fmt(dai, fmt);
3425 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3428 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3430 * @tx_mask: bitmask representing active TX slots.
3431 * @rx_mask: bitmask representing active RX slots.
3432 * @slots: Number of slots in use.
3433 * @slot_width: Width in bits for each slot.
3435 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3438 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3439 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3441 if (dai->driver && dai->driver->ops->set_tdm_slot)
3442 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3447 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3450 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3452 * @tx_num: how many TX channels
3453 * @tx_slot: pointer to an array which imply the TX slot number channel
3455 * @rx_num: how many RX channels
3456 * @rx_slot: pointer to an array which imply the RX slot number channel
3459 * configure the relationship between channel number and TDM slot number.
3461 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3462 unsigned int tx_num, unsigned int *tx_slot,
3463 unsigned int rx_num, unsigned int *rx_slot)
3465 if (dai->driver && dai->driver->ops->set_channel_map)
3466 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3471 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3474 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3476 * @tristate: tristate enable
3478 * Tristates the DAI so that others can use it.
3480 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3482 if (dai->driver && dai->driver->ops->set_tristate)
3483 return dai->driver->ops->set_tristate(dai, tristate);
3487 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3490 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3492 * @mute: mute enable
3494 * Mutes the DAI DAC.
3496 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3498 if (dai->driver && dai->driver->ops->digital_mute)
3499 return dai->driver->ops->digital_mute(dai, mute);
3503 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3506 * snd_soc_register_card - Register a card with the ASoC core
3508 * @card: Card to register
3511 int snd_soc_register_card(struct snd_soc_card *card)
3515 if (!card->name || !card->dev)
3518 for (i = 0; i < card->num_links; i++) {
3519 struct snd_soc_dai_link *link = &card->dai_link[i];
3522 * Codec must be specified by 1 of name or OF node,
3523 * not both or neither.
3525 if (!!link->codec_name == !!link->codec_of_node) {
3527 "Neither/both codec name/of_node are set for %s\n",
3531 /* Codec DAI name must be specified */
3532 if (!link->codec_dai_name) {
3533 dev_err(card->dev, "codec_dai_name not set for %s\n",
3539 * Platform may be specified by either name or OF node, but
3540 * can be left unspecified, and a dummy platform will be used.
3542 if (link->platform_name && link->platform_of_node) {
3544 "Both platform name/of_node are set for %s\n", link->name);
3549 * CPU device may be specified by either name or OF node, but
3550 * can be left unspecified, and will be matched based on DAI
3553 if (link->cpu_name && link->cpu_of_node) {
3555 "Neither/both cpu name/of_node are set for %s\n",
3560 * At least one of CPU DAI name or CPU device name/node must be
3563 if (!link->cpu_dai_name &&
3564 !(link->cpu_name || link->cpu_of_node)) {
3566 "Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3572 dev_set_drvdata(card->dev, card);
3574 snd_soc_initialize_card_lists(card);
3576 soc_init_card_debugfs(card);
3578 card->rtd = devm_kzalloc(card->dev,
3579 sizeof(struct snd_soc_pcm_runtime) *
3580 (card->num_links + card->num_aux_devs),
3582 if (card->rtd == NULL)
3585 card->rtd_aux = &card->rtd[card->num_links];
3587 for (i = 0; i < card->num_links; i++)
3588 card->rtd[i].dai_link = &card->dai_link[i];
3590 INIT_LIST_HEAD(&card->list);
3591 INIT_LIST_HEAD(&card->dapm_dirty);
3592 card->instantiated = 0;
3593 mutex_init(&card->mutex);
3594 mutex_init(&card->dapm_mutex);
3596 ret = snd_soc_instantiate_card(card);
3598 soc_cleanup_card_debugfs(card);
3602 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3605 * snd_soc_unregister_card - Unregister a card with the ASoC core
3607 * @card: Card to unregister
3610 int snd_soc_unregister_card(struct snd_soc_card *card)
3612 if (card->instantiated)
3613 soc_cleanup_card_resources(card);
3614 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3618 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3621 * Simplify DAI link configuration by removing ".-1" from device names
3622 * and sanitizing names.
3624 static char *fmt_single_name(struct device *dev, int *id)
3626 char *found, name[NAME_SIZE];
3629 if (dev_name(dev) == NULL)
3632 strlcpy(name, dev_name(dev), NAME_SIZE);
3634 /* are we a "%s.%d" name (platform and SPI components) */
3635 found = strstr(name, dev->driver->name);
3638 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3640 /* discard ID from name if ID == -1 */
3642 found[strlen(dev->driver->name)] = '\0';
3646 /* I2C component devices are named "bus-addr" */
3647 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3648 char tmp[NAME_SIZE];
3650 /* create unique ID number from I2C addr and bus */
3651 *id = ((id1 & 0xffff) << 16) + id2;
3653 /* sanitize component name for DAI link creation */
3654 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3655 strlcpy(name, tmp, NAME_SIZE);
3660 return kstrdup(name, GFP_KERNEL);
3664 * Simplify DAI link naming for single devices with multiple DAIs by removing
3665 * any ".-1" and using the DAI name (instead of device name).
3667 static inline char *fmt_multiple_name(struct device *dev,
3668 struct snd_soc_dai_driver *dai_drv)
3670 if (dai_drv->name == NULL) {
3671 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3676 return kstrdup(dai_drv->name, GFP_KERNEL);
3680 * snd_soc_register_dai - Register a DAI with the ASoC core
3682 * @dai: DAI to register
3684 int snd_soc_register_dai(struct device *dev,
3685 struct snd_soc_dai_driver *dai_drv)
3687 struct snd_soc_codec *codec;
3688 struct snd_soc_dai *dai;
3690 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3692 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3696 /* create DAI component name */
3697 dai->name = fmt_single_name(dev, &dai->id);
3698 if (dai->name == NULL) {
3704 dai->driver = dai_drv;
3705 dai->dapm.dev = dev;
3706 if (!dai->driver->ops)
3707 dai->driver->ops = &null_dai_ops;
3709 mutex_lock(&client_mutex);
3711 list_for_each_entry(codec, &codec_list, list) {
3712 if (codec->dev == dev) {
3713 dev_dbg(dev, "Mapped DAI %s to CODEC %s\n",
3714 dai->name, codec->name);
3720 list_add(&dai->list, &dai_list);
3722 mutex_unlock(&client_mutex);
3724 pr_debug("Registered DAI '%s'\n", dai->name);
3728 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3731 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3733 * @dai: DAI to unregister
3735 void snd_soc_unregister_dai(struct device *dev)
3737 struct snd_soc_dai *dai;
3739 list_for_each_entry(dai, &dai_list, list) {
3740 if (dev == dai->dev)
3746 mutex_lock(&client_mutex);
3747 list_del(&dai->list);
3748 mutex_unlock(&client_mutex);
3750 pr_debug("Unregistered DAI '%s'\n", dai->name);
3754 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3757 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3759 * @dai: Array of DAIs to register
3760 * @count: Number of DAIs
3762 int snd_soc_register_dais(struct device *dev,
3763 struct snd_soc_dai_driver *dai_drv, size_t count)
3765 struct snd_soc_codec *codec;
3766 struct snd_soc_dai *dai;
3769 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3771 for (i = 0; i < count; i++) {
3773 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3779 /* create DAI component name */
3780 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3781 if (dai->name == NULL) {
3788 dai->driver = &dai_drv[i];
3789 if (dai->driver->id)
3790 dai->id = dai->driver->id;
3793 dai->dapm.dev = dev;
3794 if (!dai->driver->ops)
3795 dai->driver->ops = &null_dai_ops;
3797 mutex_lock(&client_mutex);
3799 list_for_each_entry(codec, &codec_list, list) {
3800 if (codec->dev == dev) {
3801 dev_dbg(dev, "Mapped DAI %s to CODEC %s\n",
3802 dai->name, codec->name);
3808 list_add(&dai->list, &dai_list);
3810 mutex_unlock(&client_mutex);
3812 pr_debug("Registered DAI '%s'\n", dai->name);
3818 for (i--; i >= 0; i--)
3819 snd_soc_unregister_dai(dev);
3823 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3826 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3828 * @dai: Array of DAIs to unregister
3829 * @count: Number of DAIs
3831 void snd_soc_unregister_dais(struct device *dev, size_t count)
3835 for (i = 0; i < count; i++)
3836 snd_soc_unregister_dai(dev);
3838 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3841 * snd_soc_register_platform - Register a platform with the ASoC core
3843 * @platform: platform to register
3845 int snd_soc_register_platform(struct device *dev,
3846 struct snd_soc_platform_driver *platform_drv)
3848 struct snd_soc_platform *platform;
3850 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3852 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3853 if (platform == NULL)
3856 /* create platform component name */
3857 platform->name = fmt_single_name(dev, &platform->id);
3858 if (platform->name == NULL) {
3863 platform->dev = dev;
3864 platform->driver = platform_drv;
3865 platform->dapm.dev = dev;
3866 platform->dapm.platform = platform;
3867 platform->dapm.stream_event = platform_drv->stream_event;
3868 mutex_init(&platform->mutex);
3870 mutex_lock(&client_mutex);
3871 list_add(&platform->list, &platform_list);
3872 mutex_unlock(&client_mutex);
3874 pr_debug("Registered platform '%s'\n", platform->name);
3878 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3881 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3883 * @platform: platform to unregister
3885 void snd_soc_unregister_platform(struct device *dev)
3887 struct snd_soc_platform *platform;
3889 list_for_each_entry(platform, &platform_list, list) {
3890 if (dev == platform->dev)
3896 mutex_lock(&client_mutex);
3897 list_del(&platform->list);
3898 mutex_unlock(&client_mutex);
3900 pr_debug("Unregistered platform '%s'\n", platform->name);
3901 kfree(platform->name);
3904 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3906 static u64 codec_format_map[] = {
3907 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3908 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3909 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3910 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3911 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3912 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3913 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3914 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3915 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3916 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3917 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3918 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3919 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3920 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3921 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3922 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3925 /* Fix up the DAI formats for endianness: codecs don't actually see
3926 * the endianness of the data but we're using the CPU format
3927 * definitions which do need to include endianness so we ensure that
3928 * codec DAIs always have both big and little endian variants set.
3930 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3934 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3935 if (stream->formats & codec_format_map[i])
3936 stream->formats |= codec_format_map[i];
3940 * snd_soc_register_codec - Register a codec with the ASoC core
3942 * @codec: codec to register
3944 int snd_soc_register_codec(struct device *dev,
3945 const struct snd_soc_codec_driver *codec_drv,
3946 struct snd_soc_dai_driver *dai_drv,
3950 struct snd_soc_codec *codec;
3953 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3955 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3959 /* create CODEC component name */
3960 codec->name = fmt_single_name(dev, &codec->id);
3961 if (codec->name == NULL) {
3966 if (codec_drv->compress_type)
3967 codec->compress_type = codec_drv->compress_type;
3969 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3971 codec->write = codec_drv->write;
3972 codec->read = codec_drv->read;
3973 codec->volatile_register = codec_drv->volatile_register;
3974 codec->readable_register = codec_drv->readable_register;
3975 codec->writable_register = codec_drv->writable_register;
3976 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3977 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3978 codec->dapm.dev = dev;
3979 codec->dapm.codec = codec;
3980 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3981 codec->dapm.stream_event = codec_drv->stream_event;
3983 codec->driver = codec_drv;
3984 codec->num_dai = num_dai;
3985 mutex_init(&codec->mutex);
3987 /* allocate CODEC register cache */
3988 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3989 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3990 codec->reg_size = reg_size;
3991 /* it is necessary to make a copy of the default register cache
3992 * because in the case of using a compression type that requires
3993 * the default register cache to be marked as __devinitconst the
3994 * kernel might have freed the array by the time we initialize
3997 if (codec_drv->reg_cache_default) {
3998 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3999 reg_size, GFP_KERNEL);
4000 if (!codec->reg_def_copy) {
4007 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4008 if (!codec->volatile_register)
4009 codec->volatile_register = snd_soc_default_volatile_register;
4010 if (!codec->readable_register)
4011 codec->readable_register = snd_soc_default_readable_register;
4012 if (!codec->writable_register)
4013 codec->writable_register = snd_soc_default_writable_register;
4016 for (i = 0; i < num_dai; i++) {
4017 fixup_codec_formats(&dai_drv[i].playback);
4018 fixup_codec_formats(&dai_drv[i].capture);
4021 mutex_lock(&client_mutex);
4022 list_add(&codec->list, &codec_list);
4023 mutex_unlock(&client_mutex);
4025 /* register any DAIs */
4027 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4029 dev_err(codec->dev, "Failed to regster DAIs: %d\n",
4033 pr_debug("Registered codec '%s'\n", codec->name);
4037 kfree(codec->reg_def_copy);
4038 codec->reg_def_copy = NULL;
4043 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4046 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4048 * @codec: codec to unregister
4050 void snd_soc_unregister_codec(struct device *dev)
4052 struct snd_soc_codec *codec;
4055 list_for_each_entry(codec, &codec_list, list) {
4056 if (dev == codec->dev)
4063 for (i = 0; i < codec->num_dai; i++)
4064 snd_soc_unregister_dai(dev);
4066 mutex_lock(&client_mutex);
4067 list_del(&codec->list);
4068 mutex_unlock(&client_mutex);
4070 pr_debug("Unregistered codec '%s'\n", codec->name);
4072 snd_soc_cache_exit(codec);
4073 kfree(codec->reg_def_copy);
4077 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4079 /* Retrieve a card's name from device tree */
4080 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4081 const char *propname)
4083 struct device_node *np = card->dev->of_node;
4086 ret = of_property_read_string_index(np, propname, 0, &card->name);
4088 * EINVAL means the property does not exist. This is fine providing
4089 * card->name was previously set, which is checked later in
4090 * snd_soc_register_card.
4092 if (ret < 0 && ret != -EINVAL) {
4094 "Property '%s' could not be read: %d\n",
4101 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4103 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4104 const char *propname)
4106 struct device_node *np = card->dev->of_node;
4108 struct snd_soc_dapm_route *routes;
4111 num_routes = of_property_count_strings(np, propname);
4112 if (num_routes < 0 || num_routes & 1) {
4114 "Property '%s' does not exist or its length is not even\n",
4121 "Property '%s's length is zero\n",
4126 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4130 "Could not allocate DAPM route table\n");
4134 for (i = 0; i < num_routes; i++) {
4135 ret = of_property_read_string_index(np, propname,
4136 2 * i, &routes[i].sink);
4139 "Property '%s' index %d could not be read: %d\n",
4140 propname, 2 * i, ret);
4144 ret = of_property_read_string_index(np, propname,
4145 (2 * i) + 1, &routes[i].source);
4148 "Property '%s' index %d could not be read: %d\n",
4149 propname, (2 * i) + 1, ret);
4155 card->num_dapm_routes = num_routes;
4156 card->dapm_routes = routes;
4160 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4162 static int __init snd_soc_init(void)
4164 #ifdef CONFIG_DEBUG_FS
4165 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4166 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4167 pr_warn("ASoC: Failed to create debugfs directory\n");
4168 snd_soc_debugfs_root = NULL;
4171 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4173 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4175 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4177 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4179 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4180 &platform_list_fops))
4181 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4184 snd_soc_util_init();
4186 return platform_driver_register(&soc_driver);
4188 module_init(snd_soc_init);
4190 static void __exit snd_soc_exit(void)
4192 snd_soc_util_exit();
4194 #ifdef CONFIG_DEBUG_FS
4195 debugfs_remove_recursive(snd_soc_debugfs_root);
4197 platform_driver_unregister(&soc_driver);
4199 module_exit(snd_soc_exit);
4201 /* Module information */
4202 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4203 MODULE_DESCRIPTION("ALSA SoC Core");
4204 MODULE_LICENSE("GPL");
4205 MODULE_ALIAS("platform:soc-audio");