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_dbg(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_dbg(card->dev, "CODEC DAI %s not registered\n",
861 dai_link->codec_dai_name);
862 return -EPROBE_DEFER;
867 dev_dbg(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_dbg(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->control_data)
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 return -EPROBE_DEFER;
1487 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1489 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1490 struct snd_soc_codec *codec;
1493 /* find CODEC from registered CODECs*/
1494 list_for_each_entry(codec, &codec_list, list) {
1495 if (!strcmp(codec->name, aux_dev->codec_name)) {
1496 if (codec->probed) {
1498 "asoc: codec already probed");
1505 /* codec not found */
1506 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1507 return -EPROBE_DEFER;
1510 ret = soc_probe_codec(card, codec);
1514 ret = soc_post_component_init(card, codec, num, 1);
1520 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1522 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1523 struct snd_soc_codec *codec = rtd->codec;
1525 /* unregister the rtd device */
1526 if (rtd->dev_registered) {
1527 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1528 device_del(rtd->dev);
1529 rtd->dev_registered = 0;
1532 if (codec && codec->probed)
1533 soc_remove_codec(codec);
1536 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1537 enum snd_soc_compress_type compress_type)
1541 if (codec->cache_init)
1544 /* override the compress_type if necessary */
1545 if (compress_type && codec->compress_type != compress_type)
1546 codec->compress_type = compress_type;
1547 ret = snd_soc_cache_init(codec);
1549 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1553 codec->cache_init = 1;
1557 static int snd_soc_instantiate_card(struct snd_soc_card *card)
1559 struct snd_soc_codec *codec;
1560 struct snd_soc_codec_conf *codec_conf;
1561 enum snd_soc_compress_type compress_type;
1562 struct snd_soc_dai_link *dai_link;
1563 int ret, i, order, dai_fmt;
1565 mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT);
1568 for (i = 0; i < card->num_links; i++) {
1569 ret = soc_bind_dai_link(card, i);
1574 /* check aux_devs too */
1575 for (i = 0; i < card->num_aux_devs; i++) {
1576 ret = soc_check_aux_dev(card, i);
1581 /* initialize the register cache for each available codec */
1582 list_for_each_entry(codec, &codec_list, list) {
1583 if (codec->cache_init)
1585 /* by default we don't override the compress_type */
1587 /* check to see if we need to override the compress_type */
1588 for (i = 0; i < card->num_configs; ++i) {
1589 codec_conf = &card->codec_conf[i];
1590 if (!strcmp(codec->name, codec_conf->dev_name)) {
1591 compress_type = codec_conf->compress_type;
1592 if (compress_type && compress_type
1593 != codec->compress_type)
1597 ret = snd_soc_init_codec_cache(codec, compress_type);
1602 /* card bind complete so register a sound card */
1603 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1604 card->owner, 0, &card->snd_card);
1606 pr_err("asoc: can't create sound card for card %s: %d\n",
1610 card->snd_card->dev = card->dev;
1612 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1613 card->dapm.dev = card->dev;
1614 card->dapm.card = card;
1615 list_add(&card->dapm.list, &card->dapm_list);
1617 #ifdef CONFIG_DEBUG_FS
1618 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1621 #ifdef CONFIG_PM_SLEEP
1622 /* deferred resume work */
1623 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1626 if (card->dapm_widgets)
1627 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1628 card->num_dapm_widgets);
1630 /* initialise the sound card only once */
1632 ret = card->probe(card);
1634 goto card_probe_error;
1637 /* probe all components used by DAI links on this card */
1638 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1640 for (i = 0; i < card->num_links; i++) {
1641 ret = soc_probe_link_components(card, i, order);
1643 pr_err("asoc: failed to instantiate card %s: %d\n",
1650 /* probe all DAI links on this card */
1651 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1653 for (i = 0; i < card->num_links; i++) {
1654 ret = soc_probe_link_dais(card, i, order);
1656 pr_err("asoc: failed to instantiate card %s: %d\n",
1663 for (i = 0; i < card->num_aux_devs; i++) {
1664 ret = soc_probe_aux_dev(card, i);
1666 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1668 goto probe_aux_dev_err;
1672 snd_soc_dapm_link_dai_widgets(card);
1675 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1677 if (card->dapm_routes)
1678 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1679 card->num_dapm_routes);
1681 snd_soc_dapm_new_widgets(&card->dapm);
1683 for (i = 0; i < card->num_links; i++) {
1684 dai_link = &card->dai_link[i];
1685 dai_fmt = dai_link->dai_fmt;
1688 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1690 if (ret != 0 && ret != -ENOTSUPP)
1691 dev_warn(card->rtd[i].codec_dai->dev,
1692 "Failed to set DAI format: %d\n",
1696 /* If this is a regular CPU link there will be a platform */
1698 (dai_link->platform_name || dai_link->platform_of_node)) {
1699 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1701 if (ret != 0 && ret != -ENOTSUPP)
1702 dev_warn(card->rtd[i].cpu_dai->dev,
1703 "Failed to set DAI format: %d\n",
1705 } else if (dai_fmt) {
1706 /* Flip the polarity for the "CPU" end */
1707 dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
1708 switch (dai_link->dai_fmt &
1709 SND_SOC_DAIFMT_MASTER_MASK) {
1710 case SND_SOC_DAIFMT_CBM_CFM:
1711 dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
1713 case SND_SOC_DAIFMT_CBM_CFS:
1714 dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
1716 case SND_SOC_DAIFMT_CBS_CFM:
1717 dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
1719 case SND_SOC_DAIFMT_CBS_CFS:
1720 dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
1724 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1726 if (ret != 0 && ret != -ENOTSUPP)
1727 dev_warn(card->rtd[i].cpu_dai->dev,
1728 "Failed to set DAI format: %d\n",
1733 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1735 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1736 "%s", card->long_name ? card->long_name : card->name);
1737 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1738 "%s", card->driver_name ? card->driver_name : card->name);
1739 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1740 switch (card->snd_card->driver[i]) {
1746 if (!isalnum(card->snd_card->driver[i]))
1747 card->snd_card->driver[i] = '_';
1752 if (card->late_probe) {
1753 ret = card->late_probe(card);
1755 dev_err(card->dev, "%s late_probe() failed: %d\n",
1757 goto probe_aux_dev_err;
1761 snd_soc_dapm_new_widgets(&card->dapm);
1763 if (card->fully_routed)
1764 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1765 snd_soc_dapm_auto_nc_codec_pins(codec);
1767 ret = snd_card_register(card->snd_card);
1769 pr_err("asoc: failed to register soundcard for %s: %d\n",
1771 goto probe_aux_dev_err;
1774 #ifdef CONFIG_SND_SOC_AC97_BUS
1775 /* register any AC97 codecs */
1776 for (i = 0; i < card->num_rtd; i++) {
1777 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1779 pr_err("asoc: failed to register AC97 %s: %d\n",
1782 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1783 goto probe_aux_dev_err;
1788 card->instantiated = 1;
1789 snd_soc_dapm_sync(&card->dapm);
1790 mutex_unlock(&card->mutex);
1795 for (i = 0; i < card->num_aux_devs; i++)
1796 soc_remove_aux_dev(card, i);
1799 soc_remove_dai_links(card);
1805 snd_card_free(card->snd_card);
1808 mutex_unlock(&card->mutex);
1813 /* probes a new socdev */
1814 static int soc_probe(struct platform_device *pdev)
1816 struct snd_soc_card *card = platform_get_drvdata(pdev);
1820 * no card, so machine driver should be registering card
1821 * we should not be here in that case so ret error
1826 dev_warn(&pdev->dev,
1827 "ASoC machine %s should use snd_soc_register_card()\n",
1830 /* Bodge while we unpick instantiation */
1831 card->dev = &pdev->dev;
1833 ret = snd_soc_register_card(card);
1835 dev_err(&pdev->dev, "Failed to register card\n");
1842 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1846 /* make sure any delayed work runs */
1847 for (i = 0; i < card->num_rtd; i++) {
1848 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1849 flush_delayed_work_sync(&rtd->delayed_work);
1852 /* remove auxiliary devices */
1853 for (i = 0; i < card->num_aux_devs; i++)
1854 soc_remove_aux_dev(card, i);
1856 /* remove and free each DAI */
1857 soc_remove_dai_links(card);
1859 soc_cleanup_card_debugfs(card);
1861 /* remove the card */
1865 snd_soc_dapm_free(&card->dapm);
1867 snd_card_free(card->snd_card);
1872 /* removes a socdev */
1873 static int soc_remove(struct platform_device *pdev)
1875 struct snd_soc_card *card = platform_get_drvdata(pdev);
1877 snd_soc_unregister_card(card);
1881 int snd_soc_poweroff(struct device *dev)
1883 struct snd_soc_card *card = dev_get_drvdata(dev);
1886 if (!card->instantiated)
1889 /* Flush out pmdown_time work - we actually do want to run it
1890 * now, we're shutting down so no imminent restart. */
1891 for (i = 0; i < card->num_rtd; i++) {
1892 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1893 flush_delayed_work_sync(&rtd->delayed_work);
1896 snd_soc_dapm_shutdown(card);
1900 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1902 const struct dev_pm_ops snd_soc_pm_ops = {
1903 .suspend = snd_soc_suspend,
1904 .resume = snd_soc_resume,
1905 .freeze = snd_soc_suspend,
1906 .thaw = snd_soc_resume,
1907 .poweroff = snd_soc_poweroff,
1908 .restore = snd_soc_resume,
1910 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1912 /* ASoC platform driver */
1913 static struct platform_driver soc_driver = {
1915 .name = "soc-audio",
1916 .owner = THIS_MODULE,
1917 .pm = &snd_soc_pm_ops,
1920 .remove = soc_remove,
1924 * snd_soc_codec_volatile_register: Report if a register is volatile.
1926 * @codec: CODEC to query.
1927 * @reg: Register to query.
1929 * Boolean function indiciating if a CODEC register is volatile.
1931 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1934 if (codec->volatile_register)
1935 return codec->volatile_register(codec, reg);
1939 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1942 * snd_soc_codec_readable_register: Report if a register is readable.
1944 * @codec: CODEC to query.
1945 * @reg: Register to query.
1947 * Boolean function indicating if a CODEC register is readable.
1949 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1952 if (codec->readable_register)
1953 return codec->readable_register(codec, reg);
1957 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1960 * snd_soc_codec_writable_register: Report if a register is writable.
1962 * @codec: CODEC to query.
1963 * @reg: Register to query.
1965 * Boolean function indicating if a CODEC register is writable.
1967 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1970 if (codec->writable_register)
1971 return codec->writable_register(codec, reg);
1975 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1977 int snd_soc_platform_read(struct snd_soc_platform *platform,
1982 if (!platform->driver->read) {
1983 dev_err(platform->dev, "platform has no read back\n");
1987 ret = platform->driver->read(platform, reg);
1988 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1989 trace_snd_soc_preg_read(platform, reg, ret);
1993 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1995 int snd_soc_platform_write(struct snd_soc_platform *platform,
1996 unsigned int reg, unsigned int val)
1998 if (!platform->driver->write) {
1999 dev_err(platform->dev, "platform has no write back\n");
2003 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
2004 trace_snd_soc_preg_write(platform, reg, val);
2005 return platform->driver->write(platform, reg, val);
2007 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
2010 * snd_soc_new_ac97_codec - initailise AC97 device
2011 * @codec: audio codec
2012 * @ops: AC97 bus operations
2013 * @num: AC97 codec number
2015 * Initialises AC97 codec resources for use by ad-hoc devices only.
2017 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
2018 struct snd_ac97_bus_ops *ops, int num)
2020 mutex_lock(&codec->mutex);
2022 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
2023 if (codec->ac97 == NULL) {
2024 mutex_unlock(&codec->mutex);
2028 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
2029 if (codec->ac97->bus == NULL) {
2032 mutex_unlock(&codec->mutex);
2036 codec->ac97->bus->ops = ops;
2037 codec->ac97->num = num;
2040 * Mark the AC97 device to be created by us. This way we ensure that the
2041 * device will be registered with the device subsystem later on.
2043 codec->ac97_created = 1;
2045 mutex_unlock(&codec->mutex);
2048 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
2051 * snd_soc_free_ac97_codec - free AC97 codec device
2052 * @codec: audio codec
2054 * Frees AC97 codec device resources.
2056 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
2058 mutex_lock(&codec->mutex);
2059 #ifdef CONFIG_SND_SOC_AC97_BUS
2060 soc_unregister_ac97_dai_link(codec);
2062 kfree(codec->ac97->bus);
2065 codec->ac97_created = 0;
2066 mutex_unlock(&codec->mutex);
2068 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
2070 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
2074 ret = codec->read(codec, reg);
2075 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
2076 trace_snd_soc_reg_read(codec, reg, ret);
2080 EXPORT_SYMBOL_GPL(snd_soc_read);
2082 unsigned int snd_soc_write(struct snd_soc_codec *codec,
2083 unsigned int reg, unsigned int val)
2085 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
2086 trace_snd_soc_reg_write(codec, reg, val);
2087 return codec->write(codec, reg, val);
2089 EXPORT_SYMBOL_GPL(snd_soc_write);
2091 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
2092 unsigned int reg, const void *data, size_t len)
2094 return codec->bulk_write_raw(codec, reg, data, len);
2096 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
2099 * snd_soc_update_bits - update codec register bits
2100 * @codec: audio codec
2101 * @reg: codec register
2102 * @mask: register mask
2105 * Writes new register value.
2107 * Returns 1 for change, 0 for no change, or negative error code.
2109 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
2110 unsigned int mask, unsigned int value)
2113 unsigned int old, new;
2116 if (codec->using_regmap) {
2117 ret = regmap_update_bits_check(codec->control_data, reg,
2118 mask, value, &change);
2120 ret = snd_soc_read(codec, reg);
2125 new = (old & ~mask) | (value & mask);
2126 change = old != new;
2128 ret = snd_soc_write(codec, reg, new);
2136 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
2139 * snd_soc_update_bits_locked - update codec register bits
2140 * @codec: audio codec
2141 * @reg: codec register
2142 * @mask: register mask
2145 * Writes new register value, and takes the codec mutex.
2147 * Returns 1 for change else 0.
2149 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
2150 unsigned short reg, unsigned int mask,
2155 mutex_lock(&codec->mutex);
2156 change = snd_soc_update_bits(codec, reg, mask, value);
2157 mutex_unlock(&codec->mutex);
2161 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
2164 * snd_soc_test_bits - test register for change
2165 * @codec: audio codec
2166 * @reg: codec register
2167 * @mask: register mask
2170 * Tests a register with a new value and checks if the new value is
2171 * different from the old value.
2173 * Returns 1 for change else 0.
2175 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
2176 unsigned int mask, unsigned int value)
2179 unsigned int old, new;
2181 old = snd_soc_read(codec, reg);
2182 new = (old & ~mask) | value;
2183 change = old != new;
2187 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2190 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2191 * @substream: the pcm substream
2192 * @hw: the hardware parameters
2194 * Sets the substream runtime hardware parameters.
2196 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2197 const struct snd_pcm_hardware *hw)
2199 struct snd_pcm_runtime *runtime = substream->runtime;
2200 runtime->hw.info = hw->info;
2201 runtime->hw.formats = hw->formats;
2202 runtime->hw.period_bytes_min = hw->period_bytes_min;
2203 runtime->hw.period_bytes_max = hw->period_bytes_max;
2204 runtime->hw.periods_min = hw->periods_min;
2205 runtime->hw.periods_max = hw->periods_max;
2206 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2207 runtime->hw.fifo_size = hw->fifo_size;
2210 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2213 * snd_soc_cnew - create new control
2214 * @_template: control template
2215 * @data: control private data
2216 * @long_name: control long name
2217 * @prefix: control name prefix
2219 * Create a new mixer control from a template control.
2221 * Returns 0 for success, else error.
2223 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2224 void *data, const char *long_name,
2227 struct snd_kcontrol_new template;
2228 struct snd_kcontrol *kcontrol;
2232 memcpy(&template, _template, sizeof(template));
2236 long_name = template.name;
2239 name_len = strlen(long_name) + strlen(prefix) + 2;
2240 name = kmalloc(name_len, GFP_KERNEL);
2244 snprintf(name, name_len, "%s %s", prefix, long_name);
2246 template.name = name;
2248 template.name = long_name;
2251 kcontrol = snd_ctl_new1(&template, data);
2257 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2259 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2260 const struct snd_kcontrol_new *controls, int num_controls,
2261 const char *prefix, void *data)
2265 for (i = 0; i < num_controls; i++) {
2266 const struct snd_kcontrol_new *control = &controls[i];
2267 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2268 control->name, prefix));
2270 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2279 * snd_soc_add_codec_controls - add an array of controls to a codec.
2280 * Convenience function to add a list of controls. Many codecs were
2281 * duplicating this code.
2283 * @codec: codec to add controls to
2284 * @controls: array of controls to add
2285 * @num_controls: number of elements in the array
2287 * Return 0 for success, else error.
2289 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2290 const struct snd_kcontrol_new *controls, int num_controls)
2292 struct snd_card *card = codec->card->snd_card;
2294 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2295 codec->name_prefix, codec);
2297 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2300 * snd_soc_add_platform_controls - add an array of controls to a platform.
2301 * Convenience function to add a list of controls.
2303 * @platform: platform to add controls to
2304 * @controls: array of controls to add
2305 * @num_controls: number of elements in the array
2307 * Return 0 for success, else error.
2309 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2310 const struct snd_kcontrol_new *controls, int num_controls)
2312 struct snd_card *card = platform->card->snd_card;
2314 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2317 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2320 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2321 * Convenience function to add a list of controls.
2323 * @soc_card: SoC card to add controls to
2324 * @controls: array of controls to add
2325 * @num_controls: number of elements in the array
2327 * Return 0 for success, else error.
2329 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2330 const struct snd_kcontrol_new *controls, int num_controls)
2332 struct snd_card *card = soc_card->snd_card;
2334 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2337 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2340 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2341 * Convienience function to add a list of controls.
2343 * @dai: DAI to add controls to
2344 * @controls: array of controls to add
2345 * @num_controls: number of elements in the array
2347 * Return 0 for success, else error.
2349 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2350 const struct snd_kcontrol_new *controls, int num_controls)
2352 struct snd_card *card = dai->card->snd_card;
2354 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2357 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2360 * snd_soc_info_enum_double - enumerated double mixer info callback
2361 * @kcontrol: mixer control
2362 * @uinfo: control element information
2364 * Callback to provide information about a double enumerated
2367 * Returns 0 for success.
2369 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2370 struct snd_ctl_elem_info *uinfo)
2372 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2374 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2375 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2376 uinfo->value.enumerated.items = e->max;
2378 if (uinfo->value.enumerated.item > e->max - 1)
2379 uinfo->value.enumerated.item = e->max - 1;
2380 strcpy(uinfo->value.enumerated.name,
2381 e->texts[uinfo->value.enumerated.item]);
2384 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2387 * snd_soc_get_enum_double - enumerated double mixer get callback
2388 * @kcontrol: mixer control
2389 * @ucontrol: control element information
2391 * Callback to get the value of a double enumerated mixer.
2393 * Returns 0 for success.
2395 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2396 struct snd_ctl_elem_value *ucontrol)
2398 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2399 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2400 unsigned int val, bitmask;
2402 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2404 val = snd_soc_read(codec, e->reg);
2405 ucontrol->value.enumerated.item[0]
2406 = (val >> e->shift_l) & (bitmask - 1);
2407 if (e->shift_l != e->shift_r)
2408 ucontrol->value.enumerated.item[1] =
2409 (val >> e->shift_r) & (bitmask - 1);
2413 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2416 * snd_soc_put_enum_double - enumerated double mixer put callback
2417 * @kcontrol: mixer control
2418 * @ucontrol: control element information
2420 * Callback to set the value of a double enumerated mixer.
2422 * Returns 0 for success.
2424 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2425 struct snd_ctl_elem_value *ucontrol)
2427 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2428 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2430 unsigned int mask, bitmask;
2432 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2434 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2436 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2437 mask = (bitmask - 1) << e->shift_l;
2438 if (e->shift_l != e->shift_r) {
2439 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2441 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2442 mask |= (bitmask - 1) << e->shift_r;
2445 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2447 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2450 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2451 * @kcontrol: mixer control
2452 * @ucontrol: control element information
2454 * Callback to get the value of a double semi enumerated mixer.
2456 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2457 * used for handling bitfield coded enumeration for example.
2459 * Returns 0 for success.
2461 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2462 struct snd_ctl_elem_value *ucontrol)
2464 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2465 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2466 unsigned int reg_val, val, mux;
2468 reg_val = snd_soc_read(codec, e->reg);
2469 val = (reg_val >> e->shift_l) & e->mask;
2470 for (mux = 0; mux < e->max; mux++) {
2471 if (val == e->values[mux])
2474 ucontrol->value.enumerated.item[0] = mux;
2475 if (e->shift_l != e->shift_r) {
2476 val = (reg_val >> e->shift_r) & e->mask;
2477 for (mux = 0; mux < e->max; mux++) {
2478 if (val == e->values[mux])
2481 ucontrol->value.enumerated.item[1] = mux;
2486 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2489 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2490 * @kcontrol: mixer control
2491 * @ucontrol: control element information
2493 * Callback to set the value of a double semi enumerated mixer.
2495 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2496 * used for handling bitfield coded enumeration for example.
2498 * Returns 0 for success.
2500 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2501 struct snd_ctl_elem_value *ucontrol)
2503 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2504 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2508 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2510 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2511 mask = e->mask << e->shift_l;
2512 if (e->shift_l != e->shift_r) {
2513 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2515 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2516 mask |= e->mask << e->shift_r;
2519 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2521 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2524 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2525 * @kcontrol: mixer control
2526 * @uinfo: control element information
2528 * Callback to provide information about an external enumerated
2531 * Returns 0 for success.
2533 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2534 struct snd_ctl_elem_info *uinfo)
2536 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2538 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2540 uinfo->value.enumerated.items = e->max;
2542 if (uinfo->value.enumerated.item > e->max - 1)
2543 uinfo->value.enumerated.item = e->max - 1;
2544 strcpy(uinfo->value.enumerated.name,
2545 e->texts[uinfo->value.enumerated.item]);
2548 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2551 * snd_soc_info_volsw_ext - external single mixer info callback
2552 * @kcontrol: mixer control
2553 * @uinfo: control element information
2555 * Callback to provide information about a single external mixer control.
2557 * Returns 0 for success.
2559 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2560 struct snd_ctl_elem_info *uinfo)
2562 int max = kcontrol->private_value;
2564 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2565 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2567 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2570 uinfo->value.integer.min = 0;
2571 uinfo->value.integer.max = max;
2574 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2577 * snd_soc_info_volsw - single mixer info callback
2578 * @kcontrol: mixer control
2579 * @uinfo: control element information
2581 * Callback to provide information about a single mixer control, or a double
2582 * mixer control that spans 2 registers.
2584 * Returns 0 for success.
2586 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2587 struct snd_ctl_elem_info *uinfo)
2589 struct soc_mixer_control *mc =
2590 (struct soc_mixer_control *)kcontrol->private_value;
2593 if (!mc->platform_max)
2594 mc->platform_max = mc->max;
2595 platform_max = mc->platform_max;
2597 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2598 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2600 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2602 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2603 uinfo->value.integer.min = 0;
2604 uinfo->value.integer.max = platform_max;
2607 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2610 * snd_soc_get_volsw - single mixer get callback
2611 * @kcontrol: mixer control
2612 * @ucontrol: control element information
2614 * Callback to get the value of a single mixer control, or a double mixer
2615 * control that spans 2 registers.
2617 * Returns 0 for success.
2619 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2620 struct snd_ctl_elem_value *ucontrol)
2622 struct soc_mixer_control *mc =
2623 (struct soc_mixer_control *)kcontrol->private_value;
2624 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2625 unsigned int reg = mc->reg;
2626 unsigned int reg2 = mc->rreg;
2627 unsigned int shift = mc->shift;
2628 unsigned int rshift = mc->rshift;
2630 unsigned int mask = (1 << fls(max)) - 1;
2631 unsigned int invert = mc->invert;
2633 ucontrol->value.integer.value[0] =
2634 (snd_soc_read(codec, reg) >> shift) & mask;
2636 ucontrol->value.integer.value[0] =
2637 max - ucontrol->value.integer.value[0];
2639 if (snd_soc_volsw_is_stereo(mc)) {
2641 ucontrol->value.integer.value[1] =
2642 (snd_soc_read(codec, reg) >> rshift) & mask;
2644 ucontrol->value.integer.value[1] =
2645 (snd_soc_read(codec, reg2) >> shift) & mask;
2647 ucontrol->value.integer.value[1] =
2648 max - ucontrol->value.integer.value[1];
2653 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2656 * snd_soc_put_volsw - single mixer put callback
2657 * @kcontrol: mixer control
2658 * @ucontrol: control element information
2660 * Callback to set the value of a single mixer control, or a double mixer
2661 * control that spans 2 registers.
2663 * Returns 0 for success.
2665 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2666 struct snd_ctl_elem_value *ucontrol)
2668 struct soc_mixer_control *mc =
2669 (struct soc_mixer_control *)kcontrol->private_value;
2670 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2671 unsigned int reg = mc->reg;
2672 unsigned int reg2 = mc->rreg;
2673 unsigned int shift = mc->shift;
2674 unsigned int rshift = mc->rshift;
2676 unsigned int mask = (1 << fls(max)) - 1;
2677 unsigned int invert = mc->invert;
2680 unsigned int val2 = 0;
2681 unsigned int val, val_mask;
2683 val = (ucontrol->value.integer.value[0] & mask);
2686 val_mask = mask << shift;
2688 if (snd_soc_volsw_is_stereo(mc)) {
2689 val2 = (ucontrol->value.integer.value[1] & mask);
2693 val_mask |= mask << rshift;
2694 val |= val2 << rshift;
2696 val2 = val2 << shift;
2700 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2705 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2709 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2712 * snd_soc_get_volsw_sx - single mixer get callback
2713 * @kcontrol: mixer control
2714 * @ucontrol: control element information
2716 * Callback to get the value of a single mixer control, or a double mixer
2717 * control that spans 2 registers.
2719 * Returns 0 for success.
2721 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
2722 struct snd_ctl_elem_value *ucontrol)
2724 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2725 struct soc_mixer_control *mc =
2726 (struct soc_mixer_control *)kcontrol->private_value;
2728 unsigned int reg = mc->reg;
2729 unsigned int reg2 = mc->rreg;
2730 unsigned int shift = mc->shift;
2731 unsigned int rshift = mc->rshift;
2734 int mask = (1 << (fls(min + max) - 1)) - 1;
2736 ucontrol->value.integer.value[0] =
2737 ((snd_soc_read(codec, reg) >> shift) - min) & mask;
2739 if (snd_soc_volsw_is_stereo(mc))
2740 ucontrol->value.integer.value[1] =
2741 ((snd_soc_read(codec, reg2) >> rshift) - min) & mask;
2745 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
2748 * snd_soc_put_volsw_sx - double mixer set callback
2749 * @kcontrol: mixer control
2750 * @uinfo: control element information
2752 * Callback to set the value of a double mixer control that spans 2 registers.
2754 * Returns 0 for success.
2756 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
2757 struct snd_ctl_elem_value *ucontrol)
2759 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2760 struct soc_mixer_control *mc =
2761 (struct soc_mixer_control *)kcontrol->private_value;
2763 unsigned int reg = mc->reg;
2764 unsigned int reg2 = mc->rreg;
2765 unsigned int shift = mc->shift;
2766 unsigned int rshift = mc->rshift;
2769 int mask = (1 << (fls(min + max) - 1)) - 1;
2771 unsigned short val, val_mask, val2 = 0;
2773 val_mask = mask << shift;
2774 val = (ucontrol->value.integer.value[0] + min) & mask;
2777 if (snd_soc_update_bits_locked(codec, reg, val_mask, val))
2780 if (snd_soc_volsw_is_stereo(mc)) {
2781 val_mask = mask << rshift;
2782 val2 = (ucontrol->value.integer.value[1] + min) & mask;
2783 val2 = val2 << rshift;
2785 if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2))
2790 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
2793 * snd_soc_info_volsw_s8 - signed mixer info callback
2794 * @kcontrol: mixer control
2795 * @uinfo: control element information
2797 * Callback to provide information about a signed mixer control.
2799 * Returns 0 for success.
2801 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2802 struct snd_ctl_elem_info *uinfo)
2804 struct soc_mixer_control *mc =
2805 (struct soc_mixer_control *)kcontrol->private_value;
2809 if (!mc->platform_max)
2810 mc->platform_max = mc->max;
2811 platform_max = mc->platform_max;
2813 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2815 uinfo->value.integer.min = 0;
2816 uinfo->value.integer.max = platform_max - min;
2819 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2822 * snd_soc_get_volsw_s8 - signed mixer get callback
2823 * @kcontrol: mixer control
2824 * @ucontrol: control element information
2826 * Callback to get the value of a signed mixer control.
2828 * Returns 0 for success.
2830 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2831 struct snd_ctl_elem_value *ucontrol)
2833 struct soc_mixer_control *mc =
2834 (struct soc_mixer_control *)kcontrol->private_value;
2835 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2836 unsigned int reg = mc->reg;
2838 int val = snd_soc_read(codec, reg);
2840 ucontrol->value.integer.value[0] =
2841 ((signed char)(val & 0xff))-min;
2842 ucontrol->value.integer.value[1] =
2843 ((signed char)((val >> 8) & 0xff))-min;
2846 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2849 * snd_soc_put_volsw_sgn - signed mixer put callback
2850 * @kcontrol: mixer control
2851 * @ucontrol: control element information
2853 * Callback to set the value of a signed mixer control.
2855 * Returns 0 for success.
2857 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2858 struct snd_ctl_elem_value *ucontrol)
2860 struct soc_mixer_control *mc =
2861 (struct soc_mixer_control *)kcontrol->private_value;
2862 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2863 unsigned int reg = mc->reg;
2867 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2868 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2870 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2872 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2875 * snd_soc_info_volsw_range - single mixer info callback with range.
2876 * @kcontrol: mixer control
2877 * @uinfo: control element information
2879 * Callback to provide information, within a range, about a single
2882 * returns 0 for success.
2884 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
2885 struct snd_ctl_elem_info *uinfo)
2887 struct soc_mixer_control *mc =
2888 (struct soc_mixer_control *)kcontrol->private_value;
2892 if (!mc->platform_max)
2893 mc->platform_max = mc->max;
2894 platform_max = mc->platform_max;
2896 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2898 uinfo->value.integer.min = 0;
2899 uinfo->value.integer.max = platform_max - min;
2903 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
2906 * snd_soc_put_volsw_range - single mixer put value callback with range.
2907 * @kcontrol: mixer control
2908 * @ucontrol: control element information
2910 * Callback to set the value, within a range, for a single mixer control.
2912 * Returns 0 for success.
2914 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
2915 struct snd_ctl_elem_value *ucontrol)
2917 struct soc_mixer_control *mc =
2918 (struct soc_mixer_control *)kcontrol->private_value;
2919 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2920 unsigned int reg = mc->reg;
2921 unsigned int shift = mc->shift;
2924 unsigned int mask = (1 << fls(max)) - 1;
2925 unsigned int invert = mc->invert;
2926 unsigned int val, val_mask;
2928 val = ((ucontrol->value.integer.value[0] + min) & mask);
2931 val_mask = mask << shift;
2934 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2936 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
2939 * snd_soc_get_volsw_range - single mixer get callback with range
2940 * @kcontrol: mixer control
2941 * @ucontrol: control element information
2943 * Callback to get the value, within a range, of a single mixer control.
2945 * Returns 0 for success.
2947 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
2948 struct snd_ctl_elem_value *ucontrol)
2950 struct soc_mixer_control *mc =
2951 (struct soc_mixer_control *)kcontrol->private_value;
2952 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2953 unsigned int reg = mc->reg;
2954 unsigned int shift = mc->shift;
2957 unsigned int mask = (1 << fls(max)) - 1;
2958 unsigned int invert = mc->invert;
2960 ucontrol->value.integer.value[0] =
2961 (snd_soc_read(codec, reg) >> shift) & mask;
2963 ucontrol->value.integer.value[0] =
2964 max - ucontrol->value.integer.value[0];
2965 ucontrol->value.integer.value[0] =
2966 ucontrol->value.integer.value[0] - min;
2970 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
2973 * snd_soc_limit_volume - Set new limit to an existing volume control.
2975 * @codec: where to look for the control
2976 * @name: Name of the control
2977 * @max: new maximum limit
2979 * Return 0 for success, else error.
2981 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2982 const char *name, int max)
2984 struct snd_card *card = codec->card->snd_card;
2985 struct snd_kcontrol *kctl;
2986 struct soc_mixer_control *mc;
2990 /* Sanity check for name and max */
2991 if (unlikely(!name || max <= 0))
2994 list_for_each_entry(kctl, &card->controls, list) {
2995 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
3001 mc = (struct soc_mixer_control *)kctl->private_value;
3002 if (max <= mc->max) {
3003 mc->platform_max = max;
3009 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
3011 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
3012 struct snd_ctl_elem_info *uinfo)
3014 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3015 struct soc_bytes *params = (void *)kcontrol->private_value;
3017 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
3018 uinfo->count = params->num_regs * codec->val_bytes;
3022 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
3024 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
3025 struct snd_ctl_elem_value *ucontrol)
3027 struct soc_bytes *params = (void *)kcontrol->private_value;
3028 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3031 if (codec->using_regmap)
3032 ret = regmap_raw_read(codec->control_data, params->base,
3033 ucontrol->value.bytes.data,
3034 params->num_regs * codec->val_bytes);
3038 /* Hide any masked bytes to ensure consistent data reporting */
3039 if (ret == 0 && params->mask) {
3040 switch (codec->val_bytes) {
3042 ucontrol->value.bytes.data[0] &= ~params->mask;
3045 ((u16 *)(&ucontrol->value.bytes.data))[0]
3049 ((u32 *)(&ucontrol->value.bytes.data))[0]
3059 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
3061 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
3062 struct snd_ctl_elem_value *ucontrol)
3064 struct soc_bytes *params = (void *)kcontrol->private_value;
3065 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3070 if (!codec->using_regmap)
3073 data = ucontrol->value.bytes.data;
3074 len = params->num_regs * codec->val_bytes;
3077 * If we've got a mask then we need to preserve the register
3078 * bits. We shouldn't modify the incoming data so take a
3082 ret = regmap_read(codec->control_data, params->base, &val);
3086 val &= params->mask;
3088 data = kmemdup(data, len, GFP_KERNEL);
3092 switch (codec->val_bytes) {
3094 ((u8 *)data)[0] &= ~params->mask;
3095 ((u8 *)data)[0] |= val;
3098 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
3099 ((u16 *)data)[0] |= cpu_to_be16(val);
3102 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
3103 ((u32 *)data)[0] |= cpu_to_be32(val);
3110 ret = regmap_raw_write(codec->control_data, params->base,
3118 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
3121 * snd_soc_info_xr_sx - signed multi register info callback
3122 * @kcontrol: mreg control
3123 * @uinfo: control element information
3125 * Callback to provide information of a control that can
3126 * span multiple codec registers which together
3127 * forms a single signed value in a MSB/LSB manner.
3129 * Returns 0 for success.
3131 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
3132 struct snd_ctl_elem_info *uinfo)
3134 struct soc_mreg_control *mc =
3135 (struct soc_mreg_control *)kcontrol->private_value;
3136 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3138 uinfo->value.integer.min = mc->min;
3139 uinfo->value.integer.max = mc->max;
3143 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
3146 * snd_soc_get_xr_sx - signed multi register get callback
3147 * @kcontrol: mreg control
3148 * @ucontrol: control element information
3150 * Callback to get the value of a control that can span
3151 * multiple codec registers which together forms a single
3152 * signed value in a MSB/LSB manner. The control supports
3153 * specifying total no of bits used to allow for bitfields
3154 * across the multiple codec registers.
3156 * Returns 0 for success.
3158 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
3159 struct snd_ctl_elem_value *ucontrol)
3161 struct soc_mreg_control *mc =
3162 (struct soc_mreg_control *)kcontrol->private_value;
3163 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3164 unsigned int regbase = mc->regbase;
3165 unsigned int regcount = mc->regcount;
3166 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3167 unsigned int regwmask = (1<<regwshift)-1;
3168 unsigned int invert = mc->invert;
3169 unsigned long mask = (1UL<<mc->nbits)-1;
3173 unsigned long regval;
3176 for (i = 0; i < regcount; i++) {
3177 regval = snd_soc_read(codec, regbase+i) & regwmask;
3178 val |= regval << (regwshift*(regcount-i-1));
3181 if (min < 0 && val > max)
3185 ucontrol->value.integer.value[0] = val;
3189 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
3192 * snd_soc_put_xr_sx - signed multi register get callback
3193 * @kcontrol: mreg control
3194 * @ucontrol: control element information
3196 * Callback to set the value of a control that can span
3197 * multiple codec registers which together forms a single
3198 * signed value in a MSB/LSB manner. The control supports
3199 * specifying total no of bits used to allow for bitfields
3200 * across the multiple codec registers.
3202 * Returns 0 for success.
3204 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
3205 struct snd_ctl_elem_value *ucontrol)
3207 struct soc_mreg_control *mc =
3208 (struct soc_mreg_control *)kcontrol->private_value;
3209 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3210 unsigned int regbase = mc->regbase;
3211 unsigned int regcount = mc->regcount;
3212 unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE;
3213 unsigned int regwmask = (1<<regwshift)-1;
3214 unsigned int invert = mc->invert;
3215 unsigned long mask = (1UL<<mc->nbits)-1;
3217 long val = ucontrol->value.integer.value[0];
3218 unsigned int i, regval, regmask;
3224 for (i = 0; i < regcount; i++) {
3225 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
3226 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
3227 err = snd_soc_update_bits_locked(codec, regbase+i,
3235 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
3238 * snd_soc_get_strobe - strobe get callback
3239 * @kcontrol: mixer control
3240 * @ucontrol: control element information
3242 * Callback get the value of a strobe mixer control.
3244 * Returns 0 for success.
3246 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
3247 struct snd_ctl_elem_value *ucontrol)
3249 struct soc_mixer_control *mc =
3250 (struct soc_mixer_control *)kcontrol->private_value;
3251 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3252 unsigned int reg = mc->reg;
3253 unsigned int shift = mc->shift;
3254 unsigned int mask = 1 << shift;
3255 unsigned int invert = mc->invert != 0;
3256 unsigned int val = snd_soc_read(codec, reg) & mask;
3258 if (shift != 0 && val != 0)
3260 ucontrol->value.enumerated.item[0] = val ^ invert;
3264 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
3267 * snd_soc_put_strobe - strobe put callback
3268 * @kcontrol: mixer control
3269 * @ucontrol: control element information
3271 * Callback strobe a register bit to high then low (or the inverse)
3272 * in one pass of a single mixer enum control.
3274 * Returns 1 for success.
3276 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
3277 struct snd_ctl_elem_value *ucontrol)
3279 struct soc_mixer_control *mc =
3280 (struct soc_mixer_control *)kcontrol->private_value;
3281 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
3282 unsigned int reg = mc->reg;
3283 unsigned int shift = mc->shift;
3284 unsigned int mask = 1 << shift;
3285 unsigned int invert = mc->invert != 0;
3286 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
3287 unsigned int val1 = (strobe ^ invert) ? mask : 0;
3288 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
3291 err = snd_soc_update_bits_locked(codec, reg, mask, val1);
3295 err = snd_soc_update_bits_locked(codec, reg, mask, val2);
3298 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);
3301 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
3303 * @clk_id: DAI specific clock ID
3304 * @freq: new clock frequency in Hz
3305 * @dir: new clock direction - input/output.
3307 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
3309 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
3310 unsigned int freq, int dir)
3312 if (dai->driver && dai->driver->ops->set_sysclk)
3313 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
3314 else if (dai->codec && dai->codec->driver->set_sysclk)
3315 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
3320 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
3323 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
3325 * @clk_id: DAI specific clock ID
3326 * @source: Source for the clock
3327 * @freq: new clock frequency in Hz
3328 * @dir: new clock direction - input/output.
3330 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
3332 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
3333 int source, unsigned int freq, int dir)
3335 if (codec->driver->set_sysclk)
3336 return codec->driver->set_sysclk(codec, clk_id, source,
3341 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
3344 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
3346 * @div_id: DAI specific clock divider ID
3347 * @div: new clock divisor.
3349 * Configures the clock dividers. This is used to derive the best DAI bit and
3350 * frame clocks from the system or master clock. It's best to set the DAI bit
3351 * and frame clocks as low as possible to save system power.
3353 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
3354 int div_id, int div)
3356 if (dai->driver && dai->driver->ops->set_clkdiv)
3357 return dai->driver->ops->set_clkdiv(dai, div_id, div);
3361 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
3364 * snd_soc_dai_set_pll - configure DAI PLL.
3366 * @pll_id: DAI specific PLL ID
3367 * @source: DAI specific source for the PLL
3368 * @freq_in: PLL input clock frequency in Hz
3369 * @freq_out: requested PLL output clock frequency in Hz
3371 * Configures and enables PLL to generate output clock based on input clock.
3373 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
3374 unsigned int freq_in, unsigned int freq_out)
3376 if (dai->driver && dai->driver->ops->set_pll)
3377 return dai->driver->ops->set_pll(dai, pll_id, source,
3379 else if (dai->codec && dai->codec->driver->set_pll)
3380 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
3385 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
3388 * snd_soc_codec_set_pll - configure codec PLL.
3390 * @pll_id: DAI specific PLL ID
3391 * @source: DAI specific source for the PLL
3392 * @freq_in: PLL input clock frequency in Hz
3393 * @freq_out: requested PLL output clock frequency in Hz
3395 * Configures and enables PLL to generate output clock based on input clock.
3397 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
3398 unsigned int freq_in, unsigned int freq_out)
3400 if (codec->driver->set_pll)
3401 return codec->driver->set_pll(codec, pll_id, source,
3406 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
3409 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
3411 * @fmt: SND_SOC_DAIFMT_ format value.
3413 * Configures the DAI hardware format and clocking.
3415 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
3417 if (dai->driver == NULL)
3419 if (dai->driver->ops->set_fmt == NULL)
3421 return dai->driver->ops->set_fmt(dai, fmt);
3423 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
3426 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
3428 * @tx_mask: bitmask representing active TX slots.
3429 * @rx_mask: bitmask representing active RX slots.
3430 * @slots: Number of slots in use.
3431 * @slot_width: Width in bits for each slot.
3433 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
3436 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
3437 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
3439 if (dai->driver && dai->driver->ops->set_tdm_slot)
3440 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3445 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3448 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3450 * @tx_num: how many TX channels
3451 * @tx_slot: pointer to an array which imply the TX slot number channel
3453 * @rx_num: how many RX channels
3454 * @rx_slot: pointer to an array which imply the RX slot number channel
3457 * configure the relationship between channel number and TDM slot number.
3459 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3460 unsigned int tx_num, unsigned int *tx_slot,
3461 unsigned int rx_num, unsigned int *rx_slot)
3463 if (dai->driver && dai->driver->ops->set_channel_map)
3464 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3469 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3472 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3474 * @tristate: tristate enable
3476 * Tristates the DAI so that others can use it.
3478 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3480 if (dai->driver && dai->driver->ops->set_tristate)
3481 return dai->driver->ops->set_tristate(dai, tristate);
3485 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3488 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3490 * @mute: mute enable
3492 * Mutes the DAI DAC.
3494 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3496 if (dai->driver && dai->driver->ops->digital_mute)
3497 return dai->driver->ops->digital_mute(dai, mute);
3501 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3504 * snd_soc_register_card - Register a card with the ASoC core
3506 * @card: Card to register
3509 int snd_soc_register_card(struct snd_soc_card *card)
3513 if (!card->name || !card->dev)
3516 for (i = 0; i < card->num_links; i++) {
3517 struct snd_soc_dai_link *link = &card->dai_link[i];
3520 * Codec must be specified by 1 of name or OF node,
3521 * not both or neither.
3523 if (!!link->codec_name == !!link->codec_of_node) {
3525 "Neither/both codec name/of_node are set for %s\n",
3529 /* Codec DAI name must be specified */
3530 if (!link->codec_dai_name) {
3531 dev_err(card->dev, "codec_dai_name not set for %s\n",
3537 * Platform may be specified by either name or OF node, but
3538 * can be left unspecified, and a dummy platform will be used.
3540 if (link->platform_name && link->platform_of_node) {
3542 "Both platform name/of_node are set for %s\n", link->name);
3547 * CPU device may be specified by either name or OF node, but
3548 * can be left unspecified, and will be matched based on DAI
3551 if (link->cpu_name && link->cpu_of_node) {
3553 "Neither/both cpu name/of_node are set for %s\n",
3558 * At least one of CPU DAI name or CPU device name/node must be
3561 if (!link->cpu_dai_name &&
3562 !(link->cpu_name || link->cpu_of_node)) {
3564 "Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
3570 dev_set_drvdata(card->dev, card);
3572 snd_soc_initialize_card_lists(card);
3574 soc_init_card_debugfs(card);
3576 card->rtd = devm_kzalloc(card->dev,
3577 sizeof(struct snd_soc_pcm_runtime) *
3578 (card->num_links + card->num_aux_devs),
3580 if (card->rtd == NULL)
3583 card->rtd_aux = &card->rtd[card->num_links];
3585 for (i = 0; i < card->num_links; i++)
3586 card->rtd[i].dai_link = &card->dai_link[i];
3588 INIT_LIST_HEAD(&card->list);
3589 INIT_LIST_HEAD(&card->dapm_dirty);
3590 card->instantiated = 0;
3591 mutex_init(&card->mutex);
3592 mutex_init(&card->dapm_mutex);
3594 ret = snd_soc_instantiate_card(card);
3596 soc_cleanup_card_debugfs(card);
3600 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3603 * snd_soc_unregister_card - Unregister a card with the ASoC core
3605 * @card: Card to unregister
3608 int snd_soc_unregister_card(struct snd_soc_card *card)
3610 if (card->instantiated)
3611 soc_cleanup_card_resources(card);
3612 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3616 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3619 * Simplify DAI link configuration by removing ".-1" from device names
3620 * and sanitizing names.
3622 static char *fmt_single_name(struct device *dev, int *id)
3624 char *found, name[NAME_SIZE];
3627 if (dev_name(dev) == NULL)
3630 strlcpy(name, dev_name(dev), NAME_SIZE);
3632 /* are we a "%s.%d" name (platform and SPI components) */
3633 found = strstr(name, dev->driver->name);
3636 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3638 /* discard ID from name if ID == -1 */
3640 found[strlen(dev->driver->name)] = '\0';
3644 /* I2C component devices are named "bus-addr" */
3645 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3646 char tmp[NAME_SIZE];
3648 /* create unique ID number from I2C addr and bus */
3649 *id = ((id1 & 0xffff) << 16) + id2;
3651 /* sanitize component name for DAI link creation */
3652 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3653 strlcpy(name, tmp, NAME_SIZE);
3658 return kstrdup(name, GFP_KERNEL);
3662 * Simplify DAI link naming for single devices with multiple DAIs by removing
3663 * any ".-1" and using the DAI name (instead of device name).
3665 static inline char *fmt_multiple_name(struct device *dev,
3666 struct snd_soc_dai_driver *dai_drv)
3668 if (dai_drv->name == NULL) {
3669 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3674 return kstrdup(dai_drv->name, GFP_KERNEL);
3678 * snd_soc_register_dai - Register a DAI with the ASoC core
3680 * @dai: DAI to register
3682 int snd_soc_register_dai(struct device *dev,
3683 struct snd_soc_dai_driver *dai_drv)
3685 struct snd_soc_codec *codec;
3686 struct snd_soc_dai *dai;
3688 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3690 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3694 /* create DAI component name */
3695 dai->name = fmt_single_name(dev, &dai->id);
3696 if (dai->name == NULL) {
3702 dai->driver = dai_drv;
3703 dai->dapm.dev = dev;
3704 if (!dai->driver->ops)
3705 dai->driver->ops = &null_dai_ops;
3707 mutex_lock(&client_mutex);
3709 list_for_each_entry(codec, &codec_list, list) {
3710 if (codec->dev == dev) {
3711 dev_dbg(dev, "Mapped DAI %s to CODEC %s\n",
3712 dai->name, codec->name);
3718 list_add(&dai->list, &dai_list);
3720 mutex_unlock(&client_mutex);
3722 pr_debug("Registered DAI '%s'\n", dai->name);
3726 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3729 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3731 * @dai: DAI to unregister
3733 void snd_soc_unregister_dai(struct device *dev)
3735 struct snd_soc_dai *dai;
3737 list_for_each_entry(dai, &dai_list, list) {
3738 if (dev == dai->dev)
3744 mutex_lock(&client_mutex);
3745 list_del(&dai->list);
3746 mutex_unlock(&client_mutex);
3748 pr_debug("Unregistered DAI '%s'\n", dai->name);
3752 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3755 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3757 * @dai: Array of DAIs to register
3758 * @count: Number of DAIs
3760 int snd_soc_register_dais(struct device *dev,
3761 struct snd_soc_dai_driver *dai_drv, size_t count)
3763 struct snd_soc_codec *codec;
3764 struct snd_soc_dai *dai;
3767 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3769 for (i = 0; i < count; i++) {
3771 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3777 /* create DAI component name */
3778 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3779 if (dai->name == NULL) {
3786 dai->driver = &dai_drv[i];
3787 if (dai->driver->id)
3788 dai->id = dai->driver->id;
3791 dai->dapm.dev = dev;
3792 if (!dai->driver->ops)
3793 dai->driver->ops = &null_dai_ops;
3795 mutex_lock(&client_mutex);
3797 list_for_each_entry(codec, &codec_list, list) {
3798 if (codec->dev == dev) {
3799 dev_dbg(dev, "Mapped DAI %s to CODEC %s\n",
3800 dai->name, codec->name);
3806 list_add(&dai->list, &dai_list);
3808 mutex_unlock(&client_mutex);
3810 pr_debug("Registered DAI '%s'\n", dai->name);
3816 for (i--; i >= 0; i--)
3817 snd_soc_unregister_dai(dev);
3821 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3824 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3826 * @dai: Array of DAIs to unregister
3827 * @count: Number of DAIs
3829 void snd_soc_unregister_dais(struct device *dev, size_t count)
3833 for (i = 0; i < count; i++)
3834 snd_soc_unregister_dai(dev);
3836 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3839 * snd_soc_register_platform - Register a platform with the ASoC core
3841 * @platform: platform to register
3843 int snd_soc_register_platform(struct device *dev,
3844 struct snd_soc_platform_driver *platform_drv)
3846 struct snd_soc_platform *platform;
3848 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3850 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3851 if (platform == NULL)
3854 /* create platform component name */
3855 platform->name = fmt_single_name(dev, &platform->id);
3856 if (platform->name == NULL) {
3861 platform->dev = dev;
3862 platform->driver = platform_drv;
3863 platform->dapm.dev = dev;
3864 platform->dapm.platform = platform;
3865 platform->dapm.stream_event = platform_drv->stream_event;
3866 mutex_init(&platform->mutex);
3868 mutex_lock(&client_mutex);
3869 list_add(&platform->list, &platform_list);
3870 mutex_unlock(&client_mutex);
3872 pr_debug("Registered platform '%s'\n", platform->name);
3876 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3879 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3881 * @platform: platform to unregister
3883 void snd_soc_unregister_platform(struct device *dev)
3885 struct snd_soc_platform *platform;
3887 list_for_each_entry(platform, &platform_list, list) {
3888 if (dev == platform->dev)
3894 mutex_lock(&client_mutex);
3895 list_del(&platform->list);
3896 mutex_unlock(&client_mutex);
3898 pr_debug("Unregistered platform '%s'\n", platform->name);
3899 kfree(platform->name);
3902 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3904 static u64 codec_format_map[] = {
3905 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3906 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3907 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3908 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3909 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3910 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3911 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3912 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3913 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3914 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3915 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3916 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3917 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3918 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3919 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3920 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3923 /* Fix up the DAI formats for endianness: codecs don't actually see
3924 * the endianness of the data but we're using the CPU format
3925 * definitions which do need to include endianness so we ensure that
3926 * codec DAIs always have both big and little endian variants set.
3928 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3932 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3933 if (stream->formats & codec_format_map[i])
3934 stream->formats |= codec_format_map[i];
3938 * snd_soc_register_codec - Register a codec with the ASoC core
3940 * @codec: codec to register
3942 int snd_soc_register_codec(struct device *dev,
3943 const struct snd_soc_codec_driver *codec_drv,
3944 struct snd_soc_dai_driver *dai_drv,
3948 struct snd_soc_codec *codec;
3951 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3953 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3957 /* create CODEC component name */
3958 codec->name = fmt_single_name(dev, &codec->id);
3959 if (codec->name == NULL) {
3964 if (codec_drv->compress_type)
3965 codec->compress_type = codec_drv->compress_type;
3967 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3969 codec->write = codec_drv->write;
3970 codec->read = codec_drv->read;
3971 codec->volatile_register = codec_drv->volatile_register;
3972 codec->readable_register = codec_drv->readable_register;
3973 codec->writable_register = codec_drv->writable_register;
3974 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3975 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3976 codec->dapm.dev = dev;
3977 codec->dapm.codec = codec;
3978 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3979 codec->dapm.stream_event = codec_drv->stream_event;
3981 codec->driver = codec_drv;
3982 codec->num_dai = num_dai;
3983 mutex_init(&codec->mutex);
3985 /* allocate CODEC register cache */
3986 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3987 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3988 codec->reg_size = reg_size;
3989 /* it is necessary to make a copy of the default register cache
3990 * because in the case of using a compression type that requires
3991 * the default register cache to be marked as __devinitconst the
3992 * kernel might have freed the array by the time we initialize
3995 if (codec_drv->reg_cache_default) {
3996 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3997 reg_size, GFP_KERNEL);
3998 if (!codec->reg_def_copy) {
4005 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
4006 if (!codec->volatile_register)
4007 codec->volatile_register = snd_soc_default_volatile_register;
4008 if (!codec->readable_register)
4009 codec->readable_register = snd_soc_default_readable_register;
4010 if (!codec->writable_register)
4011 codec->writable_register = snd_soc_default_writable_register;
4014 for (i = 0; i < num_dai; i++) {
4015 fixup_codec_formats(&dai_drv[i].playback);
4016 fixup_codec_formats(&dai_drv[i].capture);
4019 mutex_lock(&client_mutex);
4020 list_add(&codec->list, &codec_list);
4021 mutex_unlock(&client_mutex);
4023 /* register any DAIs */
4025 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
4027 dev_err(codec->dev, "Failed to regster DAIs: %d\n",
4031 pr_debug("Registered codec '%s'\n", codec->name);
4035 kfree(codec->reg_def_copy);
4036 codec->reg_def_copy = NULL;
4041 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
4044 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
4046 * @codec: codec to unregister
4048 void snd_soc_unregister_codec(struct device *dev)
4050 struct snd_soc_codec *codec;
4053 list_for_each_entry(codec, &codec_list, list) {
4054 if (dev == codec->dev)
4061 for (i = 0; i < codec->num_dai; i++)
4062 snd_soc_unregister_dai(dev);
4064 mutex_lock(&client_mutex);
4065 list_del(&codec->list);
4066 mutex_unlock(&client_mutex);
4068 pr_debug("Unregistered codec '%s'\n", codec->name);
4070 snd_soc_cache_exit(codec);
4071 kfree(codec->reg_def_copy);
4075 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
4077 /* Retrieve a card's name from device tree */
4078 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
4079 const char *propname)
4081 struct device_node *np = card->dev->of_node;
4084 ret = of_property_read_string_index(np, propname, 0, &card->name);
4086 * EINVAL means the property does not exist. This is fine providing
4087 * card->name was previously set, which is checked later in
4088 * snd_soc_register_card.
4090 if (ret < 0 && ret != -EINVAL) {
4092 "Property '%s' could not be read: %d\n",
4099 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
4101 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
4102 const char *propname)
4104 struct device_node *np = card->dev->of_node;
4106 struct snd_soc_dapm_route *routes;
4109 num_routes = of_property_count_strings(np, propname);
4110 if (num_routes < 0 || num_routes & 1) {
4112 "Property '%s' does not exist or its length is not even\n",
4119 "Property '%s's length is zero\n",
4124 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
4128 "Could not allocate DAPM route table\n");
4132 for (i = 0; i < num_routes; i++) {
4133 ret = of_property_read_string_index(np, propname,
4134 2 * i, &routes[i].sink);
4137 "Property '%s' index %d could not be read: %d\n",
4138 propname, 2 * i, ret);
4142 ret = of_property_read_string_index(np, propname,
4143 (2 * i) + 1, &routes[i].source);
4146 "Property '%s' index %d could not be read: %d\n",
4147 propname, (2 * i) + 1, ret);
4153 card->num_dapm_routes = num_routes;
4154 card->dapm_routes = routes;
4158 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
4160 static int __init snd_soc_init(void)
4162 #ifdef CONFIG_DEBUG_FS
4163 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
4164 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
4165 pr_warn("ASoC: Failed to create debugfs directory\n");
4166 snd_soc_debugfs_root = NULL;
4169 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
4171 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
4173 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
4175 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
4177 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
4178 &platform_list_fops))
4179 pr_warn("ASoC: Failed to create platform list debugfs file\n");
4182 snd_soc_util_init();
4184 return platform_driver_register(&soc_driver);
4186 module_init(snd_soc_init);
4188 static void __exit snd_soc_exit(void)
4190 snd_soc_util_exit();
4192 #ifdef CONFIG_DEBUG_FS
4193 debugfs_remove_recursive(snd_soc_debugfs_root);
4195 platform_driver_unregister(&soc_driver);
4197 module_exit(snd_soc_exit);
4199 /* Module information */
4200 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4201 MODULE_DESCRIPTION("ALSA SoC Core");
4202 MODULE_LICENSE("GPL");
4203 MODULE_ALIAS("platform:soc-audio");