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>
35 #include <sound/ac97_codec.h>
36 #include <sound/core.h>
37 #include <sound/jack.h>
38 #include <sound/pcm.h>
39 #include <sound/pcm_params.h>
40 #include <sound/soc.h>
41 #include <sound/initval.h>
43 #define CREATE_TRACE_POINTS
44 #include <trace/events/asoc.h>
48 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
50 #ifdef CONFIG_DEBUG_FS
51 struct dentry *snd_soc_debugfs_root;
52 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
55 static DEFINE_MUTEX(client_mutex);
56 static LIST_HEAD(card_list);
57 static LIST_HEAD(dai_list);
58 static LIST_HEAD(platform_list);
59 static LIST_HEAD(codec_list);
61 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
64 * This is a timeout to do a DAPM powerdown after a stream is closed().
65 * It can be used to eliminate pops between different playback streams, e.g.
66 * between two audio tracks.
68 static int pmdown_time = 5000;
69 module_param(pmdown_time, int, 0);
70 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
72 /* returns the minimum number of bytes needed to represent
73 * a particular given value */
74 static int min_bytes_needed(unsigned long val)
79 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
82 c = (sizeof val * 8) - c;
90 /* fill buf which is 'len' bytes with a formatted
91 * string of the form 'reg: value\n' */
92 static int format_register_str(struct snd_soc_codec *codec,
93 unsigned int reg, char *buf, size_t len)
95 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
96 int regsize = codec->driver->reg_word_size * 2;
99 char regbuf[regsize + 1];
101 /* since tmpbuf is allocated on the stack, warn the callers if they
102 * try to abuse this function */
105 /* +2 for ': ' and + 1 for '\n' */
106 if (wordsize + regsize + 2 + 1 != len)
109 ret = snd_soc_read(codec, reg);
111 memset(regbuf, 'X', regsize);
112 regbuf[regsize] = '\0';
114 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
117 /* prepare the buffer */
118 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
119 /* copy it back to the caller without the '\0' */
120 memcpy(buf, tmpbuf, len);
125 /* codec register dump */
126 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
127 size_t count, loff_t pos)
130 int wordsize, regsize;
135 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
136 regsize = codec->driver->reg_word_size * 2;
138 len = wordsize + regsize + 2 + 1;
140 if (!codec->driver->reg_cache_size)
143 if (codec->driver->reg_cache_step)
144 step = codec->driver->reg_cache_step;
146 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
147 if (!snd_soc_codec_readable_register(codec, i))
149 if (codec->driver->display_register) {
150 count += codec->driver->display_register(codec, buf + count,
151 PAGE_SIZE - count, i);
153 /* only support larger than PAGE_SIZE bytes debugfs
154 * entries for the default case */
156 if (total + len >= count - 1)
158 format_register_str(codec, i, buf + total, len);
165 total = min(total, count - 1);
170 static ssize_t codec_reg_show(struct device *dev,
171 struct device_attribute *attr, char *buf)
173 struct snd_soc_pcm_runtime *rtd =
174 container_of(dev, struct snd_soc_pcm_runtime, dev);
176 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
179 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
181 static ssize_t pmdown_time_show(struct device *dev,
182 struct device_attribute *attr, char *buf)
184 struct snd_soc_pcm_runtime *rtd =
185 container_of(dev, struct snd_soc_pcm_runtime, dev);
187 return sprintf(buf, "%ld\n", rtd->pmdown_time);
190 static ssize_t pmdown_time_set(struct device *dev,
191 struct device_attribute *attr,
192 const char *buf, size_t count)
194 struct snd_soc_pcm_runtime *rtd =
195 container_of(dev, struct snd_soc_pcm_runtime, dev);
198 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
205 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
207 #ifdef CONFIG_DEBUG_FS
208 static int codec_reg_open_file(struct inode *inode, struct file *file)
210 file->private_data = inode->i_private;
214 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
215 size_t count, loff_t *ppos)
218 struct snd_soc_codec *codec = file->private_data;
221 if (*ppos < 0 || !count)
224 buf = kmalloc(count, GFP_KERNEL);
228 ret = soc_codec_reg_show(codec, buf, count, *ppos);
230 if (copy_to_user(user_buf, buf, ret)) {
241 static ssize_t codec_reg_write_file(struct file *file,
242 const char __user *user_buf, size_t count, loff_t *ppos)
247 unsigned long reg, value;
248 struct snd_soc_codec *codec = file->private_data;
250 buf_size = min(count, (sizeof(buf)-1));
251 if (copy_from_user(buf, user_buf, buf_size))
255 while (*start == ' ')
257 reg = simple_strtoul(start, &start, 16);
258 while (*start == ' ')
260 if (strict_strtoul(start, 16, &value))
263 /* Userspace has been fiddling around behind the kernel's back */
264 add_taint(TAINT_USER);
266 snd_soc_write(codec, reg, value);
270 static const struct file_operations codec_reg_fops = {
271 .open = codec_reg_open_file,
272 .read = codec_reg_read_file,
273 .write = codec_reg_write_file,
274 .llseek = default_llseek,
277 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
279 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
281 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
283 if (!codec->debugfs_codec_root) {
285 "ASoC: Failed to create codec debugfs directory\n");
289 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
291 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
294 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
295 codec->debugfs_codec_root,
296 codec, &codec_reg_fops);
297 if (!codec->debugfs_reg)
299 "ASoC: Failed to create codec register debugfs file\n");
301 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
304 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
306 debugfs_remove_recursive(codec->debugfs_codec_root);
309 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
310 size_t count, loff_t *ppos)
312 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
313 ssize_t len, ret = 0;
314 struct snd_soc_codec *codec;
319 list_for_each_entry(codec, &codec_list, list) {
320 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
324 if (ret > PAGE_SIZE) {
331 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
338 static const struct file_operations codec_list_fops = {
339 .read = codec_list_read_file,
340 .llseek = default_llseek,/* read accesses f_pos */
343 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
344 size_t count, loff_t *ppos)
346 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
347 ssize_t len, ret = 0;
348 struct snd_soc_dai *dai;
353 list_for_each_entry(dai, &dai_list, list) {
354 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
357 if (ret > PAGE_SIZE) {
363 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
370 static const struct file_operations dai_list_fops = {
371 .read = dai_list_read_file,
372 .llseek = default_llseek,/* read accesses f_pos */
375 static ssize_t platform_list_read_file(struct file *file,
376 char __user *user_buf,
377 size_t count, loff_t *ppos)
379 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
380 ssize_t len, ret = 0;
381 struct snd_soc_platform *platform;
386 list_for_each_entry(platform, &platform_list, list) {
387 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
391 if (ret > PAGE_SIZE) {
397 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
404 static const struct file_operations platform_list_fops = {
405 .read = platform_list_read_file,
406 .llseek = default_llseek,/* read accesses f_pos */
409 static void soc_init_card_debugfs(struct snd_soc_card *card)
411 card->debugfs_card_root = debugfs_create_dir(card->name,
412 snd_soc_debugfs_root);
413 if (!card->debugfs_card_root) {
415 "ASoC: Failed to create codec debugfs directory\n");
419 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
420 card->debugfs_card_root,
422 if (!card->debugfs_pop_time)
424 "Failed to create pop time debugfs file\n");
427 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
429 debugfs_remove_recursive(card->debugfs_card_root);
434 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
438 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
442 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
446 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
451 #ifdef CONFIG_SND_SOC_AC97_BUS
452 /* unregister ac97 codec */
453 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
455 if (codec->ac97->dev.bus)
456 device_unregister(&codec->ac97->dev);
460 /* stop no dev release warning */
461 static void soc_ac97_device_release(struct device *dev){}
463 /* register ac97 codec to bus */
464 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
468 codec->ac97->dev.bus = &ac97_bus_type;
469 codec->ac97->dev.parent = codec->card->dev;
470 codec->ac97->dev.release = soc_ac97_device_release;
472 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
473 codec->card->snd_card->number, 0, codec->name);
474 err = device_register(&codec->ac97->dev);
476 snd_printk(KERN_ERR "Can't register ac97 bus\n");
477 codec->ac97->dev.bus = NULL;
484 #ifdef CONFIG_PM_SLEEP
485 /* powers down audio subsystem for suspend */
486 int snd_soc_suspend(struct device *dev)
488 struct snd_soc_card *card = dev_get_drvdata(dev);
489 struct snd_soc_codec *codec;
492 /* If the initialization of this soc device failed, there is no codec
493 * associated with it. Just bail out in this case.
495 if (list_empty(&card->codec_dev_list))
498 /* Due to the resume being scheduled into a workqueue we could
499 * suspend before that's finished - wait for it to complete.
501 snd_power_lock(card->snd_card);
502 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
503 snd_power_unlock(card->snd_card);
505 /* we're going to block userspace touching us until resume completes */
506 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
508 /* mute any active DACs */
509 for (i = 0; i < card->num_rtd; i++) {
510 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
511 struct snd_soc_dai_driver *drv = dai->driver;
513 if (card->rtd[i].dai_link->ignore_suspend)
516 if (drv->ops->digital_mute && dai->playback_active)
517 drv->ops->digital_mute(dai, 1);
520 /* suspend all pcms */
521 for (i = 0; i < card->num_rtd; i++) {
522 if (card->rtd[i].dai_link->ignore_suspend)
525 snd_pcm_suspend_all(card->rtd[i].pcm);
528 if (card->suspend_pre)
529 card->suspend_pre(card);
531 for (i = 0; i < card->num_rtd; i++) {
532 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
533 struct snd_soc_platform *platform = card->rtd[i].platform;
535 if (card->rtd[i].dai_link->ignore_suspend)
538 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
539 cpu_dai->driver->suspend(cpu_dai);
540 if (platform->driver->suspend && !platform->suspended) {
541 platform->driver->suspend(cpu_dai);
542 platform->suspended = 1;
546 /* close any waiting streams and save state */
547 for (i = 0; i < card->num_rtd; i++) {
548 flush_delayed_work_sync(&card->rtd[i].delayed_work);
549 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
552 for (i = 0; i < card->num_rtd; i++) {
553 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
555 if (card->rtd[i].dai_link->ignore_suspend)
558 if (driver->playback.stream_name != NULL)
559 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
560 SND_SOC_DAPM_STREAM_SUSPEND);
562 if (driver->capture.stream_name != NULL)
563 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
564 SND_SOC_DAPM_STREAM_SUSPEND);
567 /* suspend all CODECs */
568 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
569 /* If there are paths active then the CODEC will be held with
570 * bias _ON and should not be suspended. */
571 if (!codec->suspended && codec->driver->suspend) {
572 switch (codec->dapm.bias_level) {
573 case SND_SOC_BIAS_STANDBY:
574 case SND_SOC_BIAS_OFF:
575 codec->driver->suspend(codec, PMSG_SUSPEND);
576 codec->suspended = 1;
577 codec->cache_sync = 1;
580 dev_dbg(codec->dev, "CODEC is on over suspend\n");
586 for (i = 0; i < card->num_rtd; i++) {
587 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
589 if (card->rtd[i].dai_link->ignore_suspend)
592 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
593 cpu_dai->driver->suspend(cpu_dai);
596 if (card->suspend_post)
597 card->suspend_post(card);
601 EXPORT_SYMBOL_GPL(snd_soc_suspend);
603 /* deferred resume work, so resume can complete before we finished
604 * setting our codec back up, which can be very slow on I2C
606 static void soc_resume_deferred(struct work_struct *work)
608 struct snd_soc_card *card =
609 container_of(work, struct snd_soc_card, deferred_resume_work);
610 struct snd_soc_codec *codec;
613 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
614 * so userspace apps are blocked from touching us
617 dev_dbg(card->dev, "starting resume work\n");
619 /* Bring us up into D2 so that DAPM starts enabling things */
620 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
622 if (card->resume_pre)
623 card->resume_pre(card);
625 /* resume AC97 DAIs */
626 for (i = 0; i < card->num_rtd; i++) {
627 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
629 if (card->rtd[i].dai_link->ignore_suspend)
632 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
633 cpu_dai->driver->resume(cpu_dai);
636 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
637 /* If the CODEC was idle over suspend then it will have been
638 * left with bias OFF or STANDBY and suspended so we must now
639 * resume. Otherwise the suspend was suppressed.
641 if (codec->driver->resume && codec->suspended) {
642 switch (codec->dapm.bias_level) {
643 case SND_SOC_BIAS_STANDBY:
644 case SND_SOC_BIAS_OFF:
645 codec->driver->resume(codec);
646 codec->suspended = 0;
649 dev_dbg(codec->dev, "CODEC was on over suspend\n");
655 for (i = 0; i < card->num_rtd; i++) {
656 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
658 if (card->rtd[i].dai_link->ignore_suspend)
661 if (driver->playback.stream_name != NULL)
662 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
663 SND_SOC_DAPM_STREAM_RESUME);
665 if (driver->capture.stream_name != NULL)
666 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
667 SND_SOC_DAPM_STREAM_RESUME);
670 /* unmute any active DACs */
671 for (i = 0; i < card->num_rtd; i++) {
672 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
673 struct snd_soc_dai_driver *drv = dai->driver;
675 if (card->rtd[i].dai_link->ignore_suspend)
678 if (drv->ops->digital_mute && dai->playback_active)
679 drv->ops->digital_mute(dai, 0);
682 for (i = 0; i < card->num_rtd; i++) {
683 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
684 struct snd_soc_platform *platform = card->rtd[i].platform;
686 if (card->rtd[i].dai_link->ignore_suspend)
689 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
690 cpu_dai->driver->resume(cpu_dai);
691 if (platform->driver->resume && platform->suspended) {
692 platform->driver->resume(cpu_dai);
693 platform->suspended = 0;
697 if (card->resume_post)
698 card->resume_post(card);
700 dev_dbg(card->dev, "resume work completed\n");
702 /* userspace can access us now we are back as we were before */
703 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
706 /* powers up audio subsystem after a suspend */
707 int snd_soc_resume(struct device *dev)
709 struct snd_soc_card *card = dev_get_drvdata(dev);
710 int i, ac97_control = 0;
712 /* If the initialization of this soc device failed, there is no codec
713 * associated with it. Just bail out in this case.
715 if (list_empty(&card->codec_dev_list))
718 /* AC97 devices might have other drivers hanging off them so
719 * need to resume immediately. Other drivers don't have that
720 * problem and may take a substantial amount of time to resume
721 * due to I/O costs and anti-pop so handle them out of line.
723 for (i = 0; i < card->num_rtd; i++) {
724 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
725 ac97_control |= cpu_dai->driver->ac97_control;
728 dev_dbg(dev, "Resuming AC97 immediately\n");
729 soc_resume_deferred(&card->deferred_resume_work);
731 dev_dbg(dev, "Scheduling resume work\n");
732 if (!schedule_work(&card->deferred_resume_work))
733 dev_err(dev, "resume work item may be lost\n");
738 EXPORT_SYMBOL_GPL(snd_soc_resume);
740 #define snd_soc_suspend NULL
741 #define snd_soc_resume NULL
744 static struct snd_soc_dai_ops null_dai_ops = {
747 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
749 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
750 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
751 struct snd_soc_codec *codec;
752 struct snd_soc_platform *platform;
753 struct snd_soc_dai *codec_dai, *cpu_dai;
754 const char *platform_name;
758 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
760 /* do we already have the CPU DAI for this link ? */
764 /* no, then find CPU DAI from registered DAIs*/
765 list_for_each_entry(cpu_dai, &dai_list, list) {
766 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
767 rtd->cpu_dai = cpu_dai;
771 dev_dbg(card->dev, "CPU DAI %s not registered\n",
772 dai_link->cpu_dai_name);
775 /* do we already have the CODEC for this link ? */
780 /* no, then find CODEC from registered CODECs*/
781 list_for_each_entry(codec, &codec_list, list) {
782 if (!strcmp(codec->name, dai_link->codec_name)) {
785 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
786 list_for_each_entry(codec_dai, &dai_list, list) {
787 if (codec->dev == codec_dai->dev &&
788 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
789 rtd->codec_dai = codec_dai;
793 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
794 dai_link->codec_dai_name);
799 dev_dbg(card->dev, "CODEC %s not registered\n",
800 dai_link->codec_name);
803 /* do we need a platform? */
807 /* if there's no platform we match on the empty platform */
808 platform_name = dai_link->platform_name;
810 platform_name = "snd-soc-dummy";
812 /* no, then find one from the set of registered platforms */
813 list_for_each_entry(platform, &platform_list, list) {
814 if (!strcmp(platform->name, platform_name)) {
815 rtd->platform = platform;
820 dev_dbg(card->dev, "platform %s not registered\n",
821 dai_link->platform_name);
825 /* mark rtd as complete if we found all 4 of our client devices */
826 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
833 static void soc_remove_codec(struct snd_soc_codec *codec)
837 if (codec->driver->remove) {
838 err = codec->driver->remove(codec);
841 "asoc: failed to remove %s: %d\n",
845 /* Make sure all DAPM widgets are freed */
846 snd_soc_dapm_free(&codec->dapm);
848 soc_cleanup_codec_debugfs(codec);
850 list_del(&codec->card_list);
851 module_put(codec->dev->driver->owner);
854 static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order)
856 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
857 struct snd_soc_codec *codec = rtd->codec;
858 struct snd_soc_platform *platform = rtd->platform;
859 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
862 /* unregister the rtd device */
863 if (rtd->dev_registered) {
864 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
865 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
866 device_unregister(&rtd->dev);
867 rtd->dev_registered = 0;
870 /* remove the CODEC DAI */
871 if (codec_dai && codec_dai->probed &&
872 codec_dai->driver->remove_order == order) {
873 if (codec_dai->driver->remove) {
874 err = codec_dai->driver->remove(codec_dai);
876 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
878 codec_dai->probed = 0;
879 list_del(&codec_dai->card_list);
882 /* remove the platform */
883 if (platform && platform->probed &&
884 platform->driver->remove_order == order) {
885 if (platform->driver->remove) {
886 err = platform->driver->remove(platform);
888 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
890 platform->probed = 0;
891 list_del(&platform->card_list);
892 module_put(platform->dev->driver->owner);
895 /* remove the CODEC */
896 if (codec && codec->probed &&
897 codec->driver->remove_order == order)
898 soc_remove_codec(codec);
900 /* remove the cpu_dai */
901 if (cpu_dai && cpu_dai->probed &&
902 cpu_dai->driver->remove_order == order) {
903 if (cpu_dai->driver->remove) {
904 err = cpu_dai->driver->remove(cpu_dai);
906 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
909 list_del(&cpu_dai->card_list);
910 module_put(cpu_dai->dev->driver->owner);
914 static void soc_remove_dai_links(struct snd_soc_card *card)
918 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
920 for (dai = 0; dai < card->num_rtd; dai++)
921 soc_remove_dai_link(card, dai, order);
926 static void soc_set_name_prefix(struct snd_soc_card *card,
927 struct snd_soc_codec *codec)
931 if (card->codec_conf == NULL)
934 for (i = 0; i < card->num_configs; i++) {
935 struct snd_soc_codec_conf *map = &card->codec_conf[i];
936 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
937 codec->name_prefix = map->name_prefix;
943 static int soc_probe_codec(struct snd_soc_card *card,
944 struct snd_soc_codec *codec)
947 const struct snd_soc_codec_driver *driver = codec->driver;
950 codec->dapm.card = card;
951 soc_set_name_prefix(card, codec);
953 if (!try_module_get(codec->dev->driver->owner))
956 soc_init_codec_debugfs(codec);
958 if (driver->dapm_widgets)
959 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
960 driver->num_dapm_widgets);
962 codec->dapm.idle_bias_off = driver->idle_bias_off;
965 ret = driver->probe(codec);
968 "asoc: failed to probe CODEC %s: %d\n",
974 if (driver->controls)
975 snd_soc_add_controls(codec, driver->controls,
976 driver->num_controls);
977 if (driver->dapm_routes)
978 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
979 driver->num_dapm_routes);
981 /* mark codec as probed and add to card codec list */
983 list_add(&codec->card_list, &card->codec_dev_list);
984 list_add(&codec->dapm.list, &card->dapm_list);
989 soc_cleanup_codec_debugfs(codec);
990 module_put(codec->dev->driver->owner);
995 static int soc_probe_platform(struct snd_soc_card *card,
996 struct snd_soc_platform *platform)
999 const struct snd_soc_platform_driver *driver = platform->driver;
1001 platform->card = card;
1002 platform->dapm.card = card;
1004 if (!try_module_get(platform->dev->driver->owner))
1007 if (driver->dapm_widgets)
1008 snd_soc_dapm_new_controls(&platform->dapm,
1009 driver->dapm_widgets, driver->num_dapm_widgets);
1011 if (driver->probe) {
1012 ret = driver->probe(platform);
1014 dev_err(platform->dev,
1015 "asoc: failed to probe platform %s: %d\n",
1016 platform->name, ret);
1021 if (driver->controls)
1022 snd_soc_add_platform_controls(platform, driver->controls,
1023 driver->num_controls);
1024 if (driver->dapm_routes)
1025 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1026 driver->num_dapm_routes);
1028 /* mark platform as probed and add to card platform list */
1029 platform->probed = 1;
1030 list_add(&platform->card_list, &card->platform_dev_list);
1031 list_add(&platform->dapm.list, &card->dapm_list);
1036 module_put(platform->dev->driver->owner);
1041 static void rtd_release(struct device *dev) {}
1043 static int soc_post_component_init(struct snd_soc_card *card,
1044 struct snd_soc_codec *codec,
1045 int num, int dailess)
1047 struct snd_soc_dai_link *dai_link = NULL;
1048 struct snd_soc_aux_dev *aux_dev = NULL;
1049 struct snd_soc_pcm_runtime *rtd;
1050 const char *temp, *name;
1054 dai_link = &card->dai_link[num];
1055 rtd = &card->rtd[num];
1056 name = dai_link->name;
1058 aux_dev = &card->aux_dev[num];
1059 rtd = &card->rtd_aux[num];
1060 name = aux_dev->name;
1064 /* Make sure all DAPM widgets are instantiated */
1065 snd_soc_dapm_new_widgets(&codec->dapm);
1067 /* machine controls, routes and widgets are not prefixed */
1068 temp = codec->name_prefix;
1069 codec->name_prefix = NULL;
1071 /* do machine specific initialization */
1072 if (!dailess && dai_link->init)
1073 ret = dai_link->init(rtd);
1074 else if (dailess && aux_dev->init)
1075 ret = aux_dev->init(&codec->dapm);
1077 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1080 codec->name_prefix = temp;
1082 /* register the rtd device */
1084 rtd->dev.parent = card->dev;
1085 rtd->dev.release = rtd_release;
1086 rtd->dev.init_name = name;
1087 mutex_init(&rtd->pcm_mutex);
1088 ret = device_register(&rtd->dev);
1091 "asoc: failed to register runtime device: %d\n", ret);
1094 rtd->dev_registered = 1;
1096 /* add DAPM sysfs entries for this codec */
1097 ret = snd_soc_dapm_sys_add(&rtd->dev);
1100 "asoc: failed to add codec dapm sysfs entries: %d\n",
1103 /* add codec sysfs entries */
1104 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1107 "asoc: failed to add codec sysfs files: %d\n", ret);
1112 static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
1114 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1115 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1116 struct snd_soc_codec *codec = rtd->codec;
1117 struct snd_soc_platform *platform = rtd->platform;
1118 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1121 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1122 card->name, num, order);
1124 /* config components */
1125 codec_dai->codec = codec;
1126 cpu_dai->platform = platform;
1127 codec_dai->card = card;
1128 cpu_dai->card = card;
1130 /* set default power off timeout */
1131 rtd->pmdown_time = pmdown_time;
1133 /* probe the cpu_dai */
1134 if (!cpu_dai->probed &&
1135 cpu_dai->driver->probe_order == order) {
1136 if (!try_module_get(cpu_dai->dev->driver->owner))
1139 if (cpu_dai->driver->probe) {
1140 ret = cpu_dai->driver->probe(cpu_dai);
1142 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1144 module_put(cpu_dai->dev->driver->owner);
1148 cpu_dai->probed = 1;
1149 /* mark cpu_dai as probed and add to card dai list */
1150 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1153 /* probe the CODEC */
1154 if (!codec->probed &&
1155 codec->driver->probe_order == order) {
1156 ret = soc_probe_codec(card, codec);
1161 /* probe the platform */
1162 if (!platform->probed &&
1163 platform->driver->probe_order == order) {
1164 ret = soc_probe_platform(card, platform);
1169 /* probe the CODEC DAI */
1170 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1171 if (codec_dai->driver->probe) {
1172 ret = codec_dai->driver->probe(codec_dai);
1174 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1180 /* mark codec_dai as probed and add to card dai list */
1181 codec_dai->probed = 1;
1182 list_add(&codec_dai->card_list, &card->dai_dev_list);
1185 /* complete DAI probe during last probe */
1186 if (order != SND_SOC_COMP_ORDER_LAST)
1189 ret = soc_post_component_init(card, codec, num, 0);
1193 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1195 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1197 /* create the pcm */
1198 ret = soc_new_pcm(rtd, num);
1200 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1204 /* add platform data for AC97 devices */
1205 if (rtd->codec_dai->driver->ac97_control)
1206 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1211 #ifdef CONFIG_SND_SOC_AC97_BUS
1212 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1216 /* Only instantiate AC97 if not already done by the adaptor
1217 * for the generic AC97 subsystem.
1219 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1221 * It is possible that the AC97 device is already registered to
1222 * the device subsystem. This happens when the device is created
1223 * via snd_ac97_mixer(). Currently only SoC codec that does so
1224 * is the generic AC97 glue but others migh emerge.
1226 * In those cases we don't try to register the device again.
1228 if (!rtd->codec->ac97_created)
1231 ret = soc_ac97_dev_register(rtd->codec);
1233 printk(KERN_ERR "asoc: AC97 device register failed\n");
1237 rtd->codec->ac97_registered = 1;
1242 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1244 if (codec->ac97_registered) {
1245 soc_ac97_dev_unregister(codec);
1246 codec->ac97_registered = 0;
1251 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1253 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1254 struct snd_soc_codec *codec;
1257 /* find CODEC from registered CODECs*/
1258 list_for_each_entry(codec, &codec_list, list) {
1259 if (!strcmp(codec->name, aux_dev->codec_name)) {
1260 if (codec->probed) {
1262 "asoc: codec already probed");
1269 /* codec not found */
1270 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1274 ret = soc_probe_codec(card, codec);
1278 ret = soc_post_component_init(card, codec, num, 1);
1284 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1286 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1287 struct snd_soc_codec *codec = rtd->codec;
1289 /* unregister the rtd device */
1290 if (rtd->dev_registered) {
1291 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1292 device_unregister(&rtd->dev);
1293 rtd->dev_registered = 0;
1296 if (codec && codec->probed)
1297 soc_remove_codec(codec);
1300 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1301 enum snd_soc_compress_type compress_type)
1305 if (codec->cache_init)
1308 /* override the compress_type if necessary */
1309 if (compress_type && codec->compress_type != compress_type)
1310 codec->compress_type = compress_type;
1311 ret = snd_soc_cache_init(codec);
1313 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1317 codec->cache_init = 1;
1321 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1323 struct snd_soc_codec *codec;
1324 struct snd_soc_codec_conf *codec_conf;
1325 enum snd_soc_compress_type compress_type;
1326 struct snd_soc_dai_link *dai_link;
1329 mutex_lock(&card->mutex);
1331 if (card->instantiated) {
1332 mutex_unlock(&card->mutex);
1337 for (i = 0; i < card->num_links; i++)
1338 soc_bind_dai_link(card, i);
1340 /* bind completed ? */
1341 if (card->num_rtd != card->num_links) {
1342 mutex_unlock(&card->mutex);
1346 /* initialize the register cache for each available codec */
1347 list_for_each_entry(codec, &codec_list, list) {
1348 if (codec->cache_init)
1350 /* by default we don't override the compress_type */
1352 /* check to see if we need to override the compress_type */
1353 for (i = 0; i < card->num_configs; ++i) {
1354 codec_conf = &card->codec_conf[i];
1355 if (!strcmp(codec->name, codec_conf->dev_name)) {
1356 compress_type = codec_conf->compress_type;
1357 if (compress_type && compress_type
1358 != codec->compress_type)
1362 ret = snd_soc_init_codec_cache(codec, compress_type);
1364 mutex_unlock(&card->mutex);
1369 /* card bind complete so register a sound card */
1370 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1371 card->owner, 0, &card->snd_card);
1373 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1375 mutex_unlock(&card->mutex);
1378 card->snd_card->dev = card->dev;
1380 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1381 card->dapm.dev = card->dev;
1382 card->dapm.card = card;
1383 list_add(&card->dapm.list, &card->dapm_list);
1385 #ifdef CONFIG_DEBUG_FS
1386 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1389 #ifdef CONFIG_PM_SLEEP
1390 /* deferred resume work */
1391 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1394 if (card->dapm_widgets)
1395 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1396 card->num_dapm_widgets);
1398 /* initialise the sound card only once */
1400 ret = card->probe(card);
1402 goto card_probe_error;
1405 /* early DAI link probe */
1406 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1408 for (i = 0; i < card->num_links; i++) {
1409 ret = soc_probe_dai_link(card, i, order);
1411 pr_err("asoc: failed to instantiate card %s: %d\n",
1418 for (i = 0; i < card->num_aux_devs; i++) {
1419 ret = soc_probe_aux_dev(card, i);
1421 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1423 goto probe_aux_dev_err;
1427 /* We should have a non-codec control add function but we don't */
1429 snd_soc_add_controls(list_first_entry(&card->codec_dev_list,
1430 struct snd_soc_codec,
1433 card->num_controls);
1435 if (card->dapm_routes)
1436 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1437 card->num_dapm_routes);
1439 snd_soc_dapm_new_widgets(&card->dapm);
1441 for (i = 0; i < card->num_links; i++) {
1442 dai_link = &card->dai_link[i];
1444 if (dai_link->dai_fmt) {
1445 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1448 dev_warn(card->rtd[i].codec_dai->dev,
1449 "Failed to set DAI format: %d\n",
1452 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1455 dev_warn(card->rtd[i].cpu_dai->dev,
1456 "Failed to set DAI format: %d\n",
1461 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1463 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1464 "%s", card->long_name ? card->long_name : card->name);
1465 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1466 "%s", card->driver_name ? card->driver_name : card->name);
1467 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1468 switch (card->snd_card->driver[i]) {
1474 if (!isalnum(card->snd_card->driver[i]))
1475 card->snd_card->driver[i] = '_';
1480 if (card->late_probe) {
1481 ret = card->late_probe(card);
1483 dev_err(card->dev, "%s late_probe() failed: %d\n",
1485 goto probe_aux_dev_err;
1489 snd_soc_dapm_new_widgets(&card->dapm);
1491 ret = snd_card_register(card->snd_card);
1493 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
1494 goto probe_aux_dev_err;
1497 #ifdef CONFIG_SND_SOC_AC97_BUS
1498 /* register any AC97 codecs */
1499 for (i = 0; i < card->num_rtd; i++) {
1500 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1502 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1504 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1505 goto probe_aux_dev_err;
1510 card->instantiated = 1;
1511 snd_soc_dapm_sync(&card->dapm);
1512 mutex_unlock(&card->mutex);
1516 for (i = 0; i < card->num_aux_devs; i++)
1517 soc_remove_aux_dev(card, i);
1520 soc_remove_dai_links(card);
1526 snd_card_free(card->snd_card);
1528 mutex_unlock(&card->mutex);
1532 * Attempt to initialise any uninitialised cards. Must be called with
1535 static void snd_soc_instantiate_cards(void)
1537 struct snd_soc_card *card;
1538 list_for_each_entry(card, &card_list, list)
1539 snd_soc_instantiate_card(card);
1542 /* probes a new socdev */
1543 static int soc_probe(struct platform_device *pdev)
1545 struct snd_soc_card *card = platform_get_drvdata(pdev);
1549 * no card, so machine driver should be registering card
1550 * we should not be here in that case so ret error
1555 /* Bodge while we unpick instantiation */
1556 card->dev = &pdev->dev;
1558 ret = snd_soc_register_card(card);
1560 dev_err(&pdev->dev, "Failed to register card\n");
1567 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1571 /* make sure any delayed work runs */
1572 for (i = 0; i < card->num_rtd; i++) {
1573 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1574 flush_delayed_work_sync(&rtd->delayed_work);
1577 /* free the ALSA card at first; this syncs with pending operations */
1578 snd_card_free(card->snd_card);
1580 /* remove auxiliary devices */
1581 for (i = 0; i < card->num_aux_devs; i++)
1582 soc_remove_aux_dev(card, i);
1584 /* remove and free each DAI */
1585 soc_remove_dai_links(card);
1587 soc_cleanup_card_debugfs(card);
1589 /* remove the card */
1593 snd_soc_dapm_free(&card->dapm);
1599 /* removes a socdev */
1600 static int soc_remove(struct platform_device *pdev)
1602 struct snd_soc_card *card = platform_get_drvdata(pdev);
1604 snd_soc_unregister_card(card);
1608 int snd_soc_poweroff(struct device *dev)
1610 struct snd_soc_card *card = dev_get_drvdata(dev);
1613 if (!card->instantiated)
1616 /* Flush out pmdown_time work - we actually do want to run it
1617 * now, we're shutting down so no imminent restart. */
1618 for (i = 0; i < card->num_rtd; i++) {
1619 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1620 flush_delayed_work_sync(&rtd->delayed_work);
1623 snd_soc_dapm_shutdown(card);
1627 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1629 const struct dev_pm_ops snd_soc_pm_ops = {
1630 .suspend = snd_soc_suspend,
1631 .resume = snd_soc_resume,
1632 .poweroff = snd_soc_poweroff,
1634 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1636 /* ASoC platform driver */
1637 static struct platform_driver soc_driver = {
1639 .name = "soc-audio",
1640 .owner = THIS_MODULE,
1641 .pm = &snd_soc_pm_ops,
1644 .remove = soc_remove,
1648 * snd_soc_codec_volatile_register: Report if a register is volatile.
1650 * @codec: CODEC to query.
1651 * @reg: Register to query.
1653 * Boolean function indiciating if a CODEC register is volatile.
1655 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1658 if (codec->volatile_register)
1659 return codec->volatile_register(codec, reg);
1663 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1666 * snd_soc_codec_readable_register: Report if a register is readable.
1668 * @codec: CODEC to query.
1669 * @reg: Register to query.
1671 * Boolean function indicating if a CODEC register is readable.
1673 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1676 if (codec->readable_register)
1677 return codec->readable_register(codec, reg);
1681 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1684 * snd_soc_codec_writable_register: Report if a register is writable.
1686 * @codec: CODEC to query.
1687 * @reg: Register to query.
1689 * Boolean function indicating if a CODEC register is writable.
1691 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1694 if (codec->writable_register)
1695 return codec->writable_register(codec, reg);
1699 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1701 int snd_soc_platform_read(struct snd_soc_platform *platform,
1706 if (!platform->driver->read) {
1707 dev_err(platform->dev, "platform has no read back\n");
1711 ret = platform->driver->read(platform, reg);
1712 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1713 trace_snd_soc_preg_read(platform, reg, ret);
1717 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1719 int snd_soc_platform_write(struct snd_soc_platform *platform,
1720 unsigned int reg, unsigned int val)
1722 if (!platform->driver->write) {
1723 dev_err(platform->dev, "platform has no write back\n");
1727 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
1728 trace_snd_soc_preg_write(platform, reg, val);
1729 return platform->driver->write(platform, reg, val);
1731 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1734 * snd_soc_new_ac97_codec - initailise AC97 device
1735 * @codec: audio codec
1736 * @ops: AC97 bus operations
1737 * @num: AC97 codec number
1739 * Initialises AC97 codec resources for use by ad-hoc devices only.
1741 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1742 struct snd_ac97_bus_ops *ops, int num)
1744 mutex_lock(&codec->mutex);
1746 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1747 if (codec->ac97 == NULL) {
1748 mutex_unlock(&codec->mutex);
1752 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1753 if (codec->ac97->bus == NULL) {
1756 mutex_unlock(&codec->mutex);
1760 codec->ac97->bus->ops = ops;
1761 codec->ac97->num = num;
1764 * Mark the AC97 device to be created by us. This way we ensure that the
1765 * device will be registered with the device subsystem later on.
1767 codec->ac97_created = 1;
1769 mutex_unlock(&codec->mutex);
1772 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1775 * snd_soc_free_ac97_codec - free AC97 codec device
1776 * @codec: audio codec
1778 * Frees AC97 codec device resources.
1780 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1782 mutex_lock(&codec->mutex);
1783 #ifdef CONFIG_SND_SOC_AC97_BUS
1784 soc_unregister_ac97_dai_link(codec);
1786 kfree(codec->ac97->bus);
1789 codec->ac97_created = 0;
1790 mutex_unlock(&codec->mutex);
1792 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1794 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1798 ret = codec->read(codec, reg);
1799 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
1800 trace_snd_soc_reg_read(codec, reg, ret);
1804 EXPORT_SYMBOL_GPL(snd_soc_read);
1806 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1807 unsigned int reg, unsigned int val)
1809 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
1810 trace_snd_soc_reg_write(codec, reg, val);
1811 return codec->write(codec, reg, val);
1813 EXPORT_SYMBOL_GPL(snd_soc_write);
1815 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1816 unsigned int reg, const void *data, size_t len)
1818 return codec->bulk_write_raw(codec, reg, data, len);
1820 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1823 * snd_soc_update_bits - update codec register bits
1824 * @codec: audio codec
1825 * @reg: codec register
1826 * @mask: register mask
1829 * Writes new register value.
1831 * Returns 1 for change, 0 for no change, or negative error code.
1833 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
1834 unsigned int mask, unsigned int value)
1837 unsigned int old, new;
1840 ret = snd_soc_read(codec, reg);
1845 new = (old & ~mask) | (value & mask);
1846 change = old != new;
1848 ret = snd_soc_write(codec, reg, new);
1855 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1858 * snd_soc_update_bits_locked - update codec register bits
1859 * @codec: audio codec
1860 * @reg: codec register
1861 * @mask: register mask
1864 * Writes new register value, and takes the codec mutex.
1866 * Returns 1 for change else 0.
1868 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1869 unsigned short reg, unsigned int mask,
1874 mutex_lock(&codec->mutex);
1875 change = snd_soc_update_bits(codec, reg, mask, value);
1876 mutex_unlock(&codec->mutex);
1880 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
1883 * snd_soc_test_bits - test register for change
1884 * @codec: audio codec
1885 * @reg: codec register
1886 * @mask: register mask
1889 * Tests a register with a new value and checks if the new value is
1890 * different from the old value.
1892 * Returns 1 for change else 0.
1894 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
1895 unsigned int mask, unsigned int value)
1898 unsigned int old, new;
1900 old = snd_soc_read(codec, reg);
1901 new = (old & ~mask) | value;
1902 change = old != new;
1906 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
1909 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1910 * @substream: the pcm substream
1911 * @hw: the hardware parameters
1913 * Sets the substream runtime hardware parameters.
1915 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
1916 const struct snd_pcm_hardware *hw)
1918 struct snd_pcm_runtime *runtime = substream->runtime;
1919 runtime->hw.info = hw->info;
1920 runtime->hw.formats = hw->formats;
1921 runtime->hw.period_bytes_min = hw->period_bytes_min;
1922 runtime->hw.period_bytes_max = hw->period_bytes_max;
1923 runtime->hw.periods_min = hw->periods_min;
1924 runtime->hw.periods_max = hw->periods_max;
1925 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
1926 runtime->hw.fifo_size = hw->fifo_size;
1929 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
1932 * snd_soc_cnew - create new control
1933 * @_template: control template
1934 * @data: control private data
1935 * @long_name: control long name
1936 * @prefix: control name prefix
1938 * Create a new mixer control from a template control.
1940 * Returns 0 for success, else error.
1942 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
1943 void *data, char *long_name,
1946 struct snd_kcontrol_new template;
1947 struct snd_kcontrol *kcontrol;
1951 memcpy(&template, _template, sizeof(template));
1955 long_name = template.name;
1958 name_len = strlen(long_name) + strlen(prefix) + 2;
1959 name = kmalloc(name_len, GFP_KERNEL);
1963 snprintf(name, name_len, "%s %s", prefix, long_name);
1965 template.name = name;
1967 template.name = long_name;
1970 kcontrol = snd_ctl_new1(&template, data);
1976 EXPORT_SYMBOL_GPL(snd_soc_cnew);
1979 * snd_soc_add_controls - add an array of controls to a codec.
1980 * Convienience function to add a list of controls. Many codecs were
1981 * duplicating this code.
1983 * @codec: codec to add controls to
1984 * @controls: array of controls to add
1985 * @num_controls: number of elements in the array
1987 * Return 0 for success, else error.
1989 int snd_soc_add_controls(struct snd_soc_codec *codec,
1990 const struct snd_kcontrol_new *controls, int num_controls)
1992 struct snd_card *card = codec->card->snd_card;
1995 for (i = 0; i < num_controls; i++) {
1996 const struct snd_kcontrol_new *control = &controls[i];
1997 err = snd_ctl_add(card, snd_soc_cnew(control, codec,
1999 codec->name_prefix));
2001 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
2002 codec->name, control->name, err);
2009 EXPORT_SYMBOL_GPL(snd_soc_add_controls);
2012 * snd_soc_add_platform_controls - add an array of controls to a platform.
2013 * Convienience function to add a list of controls.
2015 * @platform: platform to add controls to
2016 * @controls: array of controls to add
2017 * @num_controls: number of elements in the array
2019 * Return 0 for success, else error.
2021 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2022 const struct snd_kcontrol_new *controls, int num_controls)
2024 struct snd_card *card = platform->card->snd_card;
2027 for (i = 0; i < num_controls; i++) {
2028 const struct snd_kcontrol_new *control = &controls[i];
2029 err = snd_ctl_add(card, snd_soc_cnew(control, platform,
2030 control->name, NULL));
2032 dev_err(platform->dev, "Failed to add %s %d\n",control->name, err);
2039 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2042 * snd_soc_info_enum_double - enumerated double mixer info callback
2043 * @kcontrol: mixer control
2044 * @uinfo: control element information
2046 * Callback to provide information about a double enumerated
2049 * Returns 0 for success.
2051 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2052 struct snd_ctl_elem_info *uinfo)
2054 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2056 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2057 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2058 uinfo->value.enumerated.items = e->max;
2060 if (uinfo->value.enumerated.item > e->max - 1)
2061 uinfo->value.enumerated.item = e->max - 1;
2062 strcpy(uinfo->value.enumerated.name,
2063 e->texts[uinfo->value.enumerated.item]);
2066 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2069 * snd_soc_get_enum_double - enumerated double mixer get callback
2070 * @kcontrol: mixer control
2071 * @ucontrol: control element information
2073 * Callback to get the value of a double enumerated mixer.
2075 * Returns 0 for success.
2077 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2078 struct snd_ctl_elem_value *ucontrol)
2080 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2081 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2082 unsigned int val, bitmask;
2084 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2086 val = snd_soc_read(codec, e->reg);
2087 ucontrol->value.enumerated.item[0]
2088 = (val >> e->shift_l) & (bitmask - 1);
2089 if (e->shift_l != e->shift_r)
2090 ucontrol->value.enumerated.item[1] =
2091 (val >> e->shift_r) & (bitmask - 1);
2095 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2098 * snd_soc_put_enum_double - enumerated double mixer put callback
2099 * @kcontrol: mixer control
2100 * @ucontrol: control element information
2102 * Callback to set the value of a double enumerated mixer.
2104 * Returns 0 for success.
2106 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2107 struct snd_ctl_elem_value *ucontrol)
2109 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2110 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2112 unsigned int mask, bitmask;
2114 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2116 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2118 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2119 mask = (bitmask - 1) << e->shift_l;
2120 if (e->shift_l != e->shift_r) {
2121 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2123 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2124 mask |= (bitmask - 1) << e->shift_r;
2127 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2129 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2132 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2133 * @kcontrol: mixer control
2134 * @ucontrol: control element information
2136 * Callback to get the value of a double semi enumerated mixer.
2138 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2139 * used for handling bitfield coded enumeration for example.
2141 * Returns 0 for success.
2143 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2144 struct snd_ctl_elem_value *ucontrol)
2146 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2147 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2148 unsigned int reg_val, val, mux;
2150 reg_val = snd_soc_read(codec, e->reg);
2151 val = (reg_val >> e->shift_l) & e->mask;
2152 for (mux = 0; mux < e->max; mux++) {
2153 if (val == e->values[mux])
2156 ucontrol->value.enumerated.item[0] = mux;
2157 if (e->shift_l != e->shift_r) {
2158 val = (reg_val >> e->shift_r) & e->mask;
2159 for (mux = 0; mux < e->max; mux++) {
2160 if (val == e->values[mux])
2163 ucontrol->value.enumerated.item[1] = mux;
2168 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2171 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2172 * @kcontrol: mixer control
2173 * @ucontrol: control element information
2175 * Callback to set the value of a double semi enumerated mixer.
2177 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2178 * used for handling bitfield coded enumeration for example.
2180 * Returns 0 for success.
2182 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2183 struct snd_ctl_elem_value *ucontrol)
2185 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2186 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2190 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2192 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2193 mask = e->mask << e->shift_l;
2194 if (e->shift_l != e->shift_r) {
2195 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2197 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2198 mask |= e->mask << e->shift_r;
2201 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2203 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2206 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2207 * @kcontrol: mixer control
2208 * @uinfo: control element information
2210 * Callback to provide information about an external enumerated
2213 * Returns 0 for success.
2215 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2216 struct snd_ctl_elem_info *uinfo)
2218 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2220 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2222 uinfo->value.enumerated.items = e->max;
2224 if (uinfo->value.enumerated.item > e->max - 1)
2225 uinfo->value.enumerated.item = e->max - 1;
2226 strcpy(uinfo->value.enumerated.name,
2227 e->texts[uinfo->value.enumerated.item]);
2230 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2233 * snd_soc_info_volsw_ext - external single mixer info callback
2234 * @kcontrol: mixer control
2235 * @uinfo: control element information
2237 * Callback to provide information about a single external mixer control.
2239 * Returns 0 for success.
2241 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2242 struct snd_ctl_elem_info *uinfo)
2244 int max = kcontrol->private_value;
2246 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2247 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2249 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2252 uinfo->value.integer.min = 0;
2253 uinfo->value.integer.max = max;
2256 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2259 * snd_soc_info_volsw - single mixer info callback
2260 * @kcontrol: mixer control
2261 * @uinfo: control element information
2263 * Callback to provide information about a single mixer control, or a double
2264 * mixer control that spans 2 registers.
2266 * Returns 0 for success.
2268 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2269 struct snd_ctl_elem_info *uinfo)
2271 struct soc_mixer_control *mc =
2272 (struct soc_mixer_control *)kcontrol->private_value;
2275 if (!mc->platform_max)
2276 mc->platform_max = mc->max;
2277 platform_max = mc->platform_max;
2279 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2280 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2282 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2284 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2285 uinfo->value.integer.min = 0;
2286 uinfo->value.integer.max = platform_max;
2289 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2292 * snd_soc_get_volsw - single mixer get callback
2293 * @kcontrol: mixer control
2294 * @ucontrol: control element information
2296 * Callback to get the value of a single mixer control, or a double mixer
2297 * control that spans 2 registers.
2299 * Returns 0 for success.
2301 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2302 struct snd_ctl_elem_value *ucontrol)
2304 struct soc_mixer_control *mc =
2305 (struct soc_mixer_control *)kcontrol->private_value;
2306 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2307 unsigned int reg = mc->reg;
2308 unsigned int reg2 = mc->rreg;
2309 unsigned int shift = mc->shift;
2310 unsigned int rshift = mc->rshift;
2312 unsigned int mask = (1 << fls(max)) - 1;
2313 unsigned int invert = mc->invert;
2315 ucontrol->value.integer.value[0] =
2316 (snd_soc_read(codec, reg) >> shift) & mask;
2318 ucontrol->value.integer.value[0] =
2319 max - ucontrol->value.integer.value[0];
2321 if (snd_soc_volsw_is_stereo(mc)) {
2323 ucontrol->value.integer.value[1] =
2324 (snd_soc_read(codec, reg) >> rshift) & mask;
2326 ucontrol->value.integer.value[1] =
2327 (snd_soc_read(codec, reg2) >> shift) & mask;
2329 ucontrol->value.integer.value[1] =
2330 max - ucontrol->value.integer.value[1];
2335 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2338 * snd_soc_put_volsw - single mixer put callback
2339 * @kcontrol: mixer control
2340 * @ucontrol: control element information
2342 * Callback to set the value of a single mixer control, or a double mixer
2343 * control that spans 2 registers.
2345 * Returns 0 for success.
2347 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2348 struct snd_ctl_elem_value *ucontrol)
2350 struct soc_mixer_control *mc =
2351 (struct soc_mixer_control *)kcontrol->private_value;
2352 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2353 unsigned int reg = mc->reg;
2354 unsigned int reg2 = mc->rreg;
2355 unsigned int shift = mc->shift;
2356 unsigned int rshift = mc->rshift;
2358 unsigned int mask = (1 << fls(max)) - 1;
2359 unsigned int invert = mc->invert;
2362 unsigned int val2 = 0;
2363 unsigned int val, val_mask;
2365 val = (ucontrol->value.integer.value[0] & mask);
2368 val_mask = mask << shift;
2370 if (snd_soc_volsw_is_stereo(mc)) {
2371 val2 = (ucontrol->value.integer.value[1] & mask);
2375 val_mask |= mask << rshift;
2376 val |= val2 << rshift;
2378 val2 = val2 << shift;
2382 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2387 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2391 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2394 * snd_soc_info_volsw_s8 - signed mixer info callback
2395 * @kcontrol: mixer control
2396 * @uinfo: control element information
2398 * Callback to provide information about a signed mixer control.
2400 * Returns 0 for success.
2402 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2403 struct snd_ctl_elem_info *uinfo)
2405 struct soc_mixer_control *mc =
2406 (struct soc_mixer_control *)kcontrol->private_value;
2410 if (!mc->platform_max)
2411 mc->platform_max = mc->max;
2412 platform_max = mc->platform_max;
2414 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2416 uinfo->value.integer.min = 0;
2417 uinfo->value.integer.max = platform_max - min;
2420 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2423 * snd_soc_get_volsw_s8 - signed mixer get callback
2424 * @kcontrol: mixer control
2425 * @ucontrol: control element information
2427 * Callback to get the value of a signed mixer control.
2429 * Returns 0 for success.
2431 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2432 struct snd_ctl_elem_value *ucontrol)
2434 struct soc_mixer_control *mc =
2435 (struct soc_mixer_control *)kcontrol->private_value;
2436 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2437 unsigned int reg = mc->reg;
2439 int val = snd_soc_read(codec, reg);
2441 ucontrol->value.integer.value[0] =
2442 ((signed char)(val & 0xff))-min;
2443 ucontrol->value.integer.value[1] =
2444 ((signed char)((val >> 8) & 0xff))-min;
2447 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2450 * snd_soc_put_volsw_sgn - signed mixer put callback
2451 * @kcontrol: mixer control
2452 * @ucontrol: control element information
2454 * Callback to set the value of a signed mixer control.
2456 * Returns 0 for success.
2458 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2459 struct snd_ctl_elem_value *ucontrol)
2461 struct soc_mixer_control *mc =
2462 (struct soc_mixer_control *)kcontrol->private_value;
2463 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2464 unsigned int reg = mc->reg;
2468 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2469 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2471 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2473 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2476 * snd_soc_limit_volume - Set new limit to an existing volume control.
2478 * @codec: where to look for the control
2479 * @name: Name of the control
2480 * @max: new maximum limit
2482 * Return 0 for success, else error.
2484 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2485 const char *name, int max)
2487 struct snd_card *card = codec->card->snd_card;
2488 struct snd_kcontrol *kctl;
2489 struct soc_mixer_control *mc;
2493 /* Sanity check for name and max */
2494 if (unlikely(!name || max <= 0))
2497 list_for_each_entry(kctl, &card->controls, list) {
2498 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2504 mc = (struct soc_mixer_control *)kctl->private_value;
2505 if (max <= mc->max) {
2506 mc->platform_max = max;
2512 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2515 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2516 * mixer info callback
2517 * @kcontrol: mixer control
2518 * @uinfo: control element information
2520 * Returns 0 for success.
2522 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2523 struct snd_ctl_elem_info *uinfo)
2525 struct soc_mixer_control *mc =
2526 (struct soc_mixer_control *)kcontrol->private_value;
2530 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2532 uinfo->value.integer.min = 0;
2533 uinfo->value.integer.max = max-min;
2537 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2540 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2541 * mixer get callback
2542 * @kcontrol: mixer control
2543 * @uinfo: control element information
2545 * Returns 0 for success.
2547 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2548 struct snd_ctl_elem_value *ucontrol)
2550 struct soc_mixer_control *mc =
2551 (struct soc_mixer_control *)kcontrol->private_value;
2552 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2553 unsigned int mask = (1<<mc->shift)-1;
2555 int val = snd_soc_read(codec, mc->reg) & mask;
2556 int valr = snd_soc_read(codec, mc->rreg) & mask;
2558 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2559 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2562 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2565 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2566 * mixer put callback
2567 * @kcontrol: mixer control
2568 * @uinfo: control element information
2570 * Returns 0 for success.
2572 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2573 struct snd_ctl_elem_value *ucontrol)
2575 struct soc_mixer_control *mc =
2576 (struct soc_mixer_control *)kcontrol->private_value;
2577 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2578 unsigned int mask = (1<<mc->shift)-1;
2581 unsigned int val, valr, oval, ovalr;
2583 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2585 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2588 oval = snd_soc_read(codec, mc->reg) & mask;
2589 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2593 ret = snd_soc_write(codec, mc->reg, val);
2597 if (ovalr != valr) {
2598 ret = snd_soc_write(codec, mc->rreg, valr);
2605 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2608 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2610 * @clk_id: DAI specific clock ID
2611 * @freq: new clock frequency in Hz
2612 * @dir: new clock direction - input/output.
2614 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2616 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2617 unsigned int freq, int dir)
2619 if (dai->driver && dai->driver->ops->set_sysclk)
2620 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2621 else if (dai->codec && dai->codec->driver->set_sysclk)
2622 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2627 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2630 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2632 * @clk_id: DAI specific clock ID
2633 * @source: Source for the clock
2634 * @freq: new clock frequency in Hz
2635 * @dir: new clock direction - input/output.
2637 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2639 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2640 int source, unsigned int freq, int dir)
2642 if (codec->driver->set_sysclk)
2643 return codec->driver->set_sysclk(codec, clk_id, source,
2648 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2651 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2653 * @div_id: DAI specific clock divider ID
2654 * @div: new clock divisor.
2656 * Configures the clock dividers. This is used to derive the best DAI bit and
2657 * frame clocks from the system or master clock. It's best to set the DAI bit
2658 * and frame clocks as low as possible to save system power.
2660 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2661 int div_id, int div)
2663 if (dai->driver && dai->driver->ops->set_clkdiv)
2664 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2668 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2671 * snd_soc_dai_set_pll - configure DAI PLL.
2673 * @pll_id: DAI specific PLL ID
2674 * @source: DAI specific source for the PLL
2675 * @freq_in: PLL input clock frequency in Hz
2676 * @freq_out: requested PLL output clock frequency in Hz
2678 * Configures and enables PLL to generate output clock based on input clock.
2680 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2681 unsigned int freq_in, unsigned int freq_out)
2683 if (dai->driver && dai->driver->ops->set_pll)
2684 return dai->driver->ops->set_pll(dai, pll_id, source,
2686 else if (dai->codec && dai->codec->driver->set_pll)
2687 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2692 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2695 * snd_soc_codec_set_pll - configure codec PLL.
2697 * @pll_id: DAI specific PLL ID
2698 * @source: DAI specific source for the PLL
2699 * @freq_in: PLL input clock frequency in Hz
2700 * @freq_out: requested PLL output clock frequency in Hz
2702 * Configures and enables PLL to generate output clock based on input clock.
2704 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2705 unsigned int freq_in, unsigned int freq_out)
2707 if (codec->driver->set_pll)
2708 return codec->driver->set_pll(codec, pll_id, source,
2713 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2716 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2718 * @fmt: SND_SOC_DAIFMT_ format value.
2720 * Configures the DAI hardware format and clocking.
2722 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2724 if (dai->driver && dai->driver->ops->set_fmt)
2725 return dai->driver->ops->set_fmt(dai, fmt);
2729 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2732 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2734 * @tx_mask: bitmask representing active TX slots.
2735 * @rx_mask: bitmask representing active RX slots.
2736 * @slots: Number of slots in use.
2737 * @slot_width: Width in bits for each slot.
2739 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2742 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2743 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2745 if (dai->driver && dai->driver->ops->set_tdm_slot)
2746 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2751 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2754 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2756 * @tx_num: how many TX channels
2757 * @tx_slot: pointer to an array which imply the TX slot number channel
2759 * @rx_num: how many RX channels
2760 * @rx_slot: pointer to an array which imply the RX slot number channel
2763 * configure the relationship between channel number and TDM slot number.
2765 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2766 unsigned int tx_num, unsigned int *tx_slot,
2767 unsigned int rx_num, unsigned int *rx_slot)
2769 if (dai->driver && dai->driver->ops->set_channel_map)
2770 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2775 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2778 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2780 * @tristate: tristate enable
2782 * Tristates the DAI so that others can use it.
2784 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2786 if (dai->driver && dai->driver->ops->set_tristate)
2787 return dai->driver->ops->set_tristate(dai, tristate);
2791 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2794 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2796 * @mute: mute enable
2798 * Mutes the DAI DAC.
2800 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
2802 if (dai->driver && dai->driver->ops->digital_mute)
2803 return dai->driver->ops->digital_mute(dai, mute);
2807 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2810 * snd_soc_register_card - Register a card with the ASoC core
2812 * @card: Card to register
2815 int snd_soc_register_card(struct snd_soc_card *card)
2819 if (!card->name || !card->dev)
2822 dev_set_drvdata(card->dev, card);
2824 snd_soc_initialize_card_lists(card);
2826 soc_init_card_debugfs(card);
2828 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
2829 (card->num_links + card->num_aux_devs),
2831 if (card->rtd == NULL)
2833 card->rtd_aux = &card->rtd[card->num_links];
2835 for (i = 0; i < card->num_links; i++)
2836 card->rtd[i].dai_link = &card->dai_link[i];
2838 INIT_LIST_HEAD(&card->list);
2839 INIT_LIST_HEAD(&card->dapm_dirty);
2840 card->instantiated = 0;
2841 mutex_init(&card->mutex);
2843 mutex_lock(&client_mutex);
2844 list_add(&card->list, &card_list);
2845 snd_soc_instantiate_cards();
2846 mutex_unlock(&client_mutex);
2848 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
2852 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2855 * snd_soc_unregister_card - Unregister a card with the ASoC core
2857 * @card: Card to unregister
2860 int snd_soc_unregister_card(struct snd_soc_card *card)
2862 if (card->instantiated)
2863 soc_cleanup_card_resources(card);
2864 mutex_lock(&client_mutex);
2865 list_del(&card->list);
2866 mutex_unlock(&client_mutex);
2867 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
2871 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2874 * Simplify DAI link configuration by removing ".-1" from device names
2875 * and sanitizing names.
2877 static char *fmt_single_name(struct device *dev, int *id)
2879 char *found, name[NAME_SIZE];
2882 if (dev_name(dev) == NULL)
2885 strlcpy(name, dev_name(dev), NAME_SIZE);
2887 /* are we a "%s.%d" name (platform and SPI components) */
2888 found = strstr(name, dev->driver->name);
2891 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2893 /* discard ID from name if ID == -1 */
2895 found[strlen(dev->driver->name)] = '\0';
2899 /* I2C component devices are named "bus-addr" */
2900 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2901 char tmp[NAME_SIZE];
2903 /* create unique ID number from I2C addr and bus */
2904 *id = ((id1 & 0xffff) << 16) + id2;
2906 /* sanitize component name for DAI link creation */
2907 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
2908 strlcpy(name, tmp, NAME_SIZE);
2913 return kstrdup(name, GFP_KERNEL);
2917 * Simplify DAI link naming for single devices with multiple DAIs by removing
2918 * any ".-1" and using the DAI name (instead of device name).
2920 static inline char *fmt_multiple_name(struct device *dev,
2921 struct snd_soc_dai_driver *dai_drv)
2923 if (dai_drv->name == NULL) {
2924 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
2929 return kstrdup(dai_drv->name, GFP_KERNEL);
2933 * snd_soc_register_dai - Register a DAI with the ASoC core
2935 * @dai: DAI to register
2937 int snd_soc_register_dai(struct device *dev,
2938 struct snd_soc_dai_driver *dai_drv)
2940 struct snd_soc_dai *dai;
2942 dev_dbg(dev, "dai register %s\n", dev_name(dev));
2944 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2948 /* create DAI component name */
2949 dai->name = fmt_single_name(dev, &dai->id);
2950 if (dai->name == NULL) {
2956 dai->driver = dai_drv;
2957 if (!dai->driver->ops)
2958 dai->driver->ops = &null_dai_ops;
2960 mutex_lock(&client_mutex);
2961 list_add(&dai->list, &dai_list);
2962 snd_soc_instantiate_cards();
2963 mutex_unlock(&client_mutex);
2965 pr_debug("Registered DAI '%s'\n", dai->name);
2969 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
2972 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
2974 * @dai: DAI to unregister
2976 void snd_soc_unregister_dai(struct device *dev)
2978 struct snd_soc_dai *dai;
2980 list_for_each_entry(dai, &dai_list, list) {
2981 if (dev == dai->dev)
2987 mutex_lock(&client_mutex);
2988 list_del(&dai->list);
2989 mutex_unlock(&client_mutex);
2991 pr_debug("Unregistered DAI '%s'\n", dai->name);
2995 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
2998 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3000 * @dai: Array of DAIs to register
3001 * @count: Number of DAIs
3003 int snd_soc_register_dais(struct device *dev,
3004 struct snd_soc_dai_driver *dai_drv, size_t count)
3006 struct snd_soc_dai *dai;
3009 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3011 for (i = 0; i < count; i++) {
3013 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3019 /* create DAI component name */
3020 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3021 if (dai->name == NULL) {
3028 dai->driver = &dai_drv[i];
3029 if (dai->driver->id)
3030 dai->id = dai->driver->id;
3033 if (!dai->driver->ops)
3034 dai->driver->ops = &null_dai_ops;
3036 mutex_lock(&client_mutex);
3037 list_add(&dai->list, &dai_list);
3038 mutex_unlock(&client_mutex);
3040 pr_debug("Registered DAI '%s'\n", dai->name);
3043 mutex_lock(&client_mutex);
3044 snd_soc_instantiate_cards();
3045 mutex_unlock(&client_mutex);
3049 for (i--; i >= 0; i--)
3050 snd_soc_unregister_dai(dev);
3054 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3057 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3059 * @dai: Array of DAIs to unregister
3060 * @count: Number of DAIs
3062 void snd_soc_unregister_dais(struct device *dev, size_t count)
3066 for (i = 0; i < count; i++)
3067 snd_soc_unregister_dai(dev);
3069 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3072 * snd_soc_register_platform - Register a platform with the ASoC core
3074 * @platform: platform to register
3076 int snd_soc_register_platform(struct device *dev,
3077 struct snd_soc_platform_driver *platform_drv)
3079 struct snd_soc_platform *platform;
3081 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3083 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3084 if (platform == NULL)
3087 /* create platform component name */
3088 platform->name = fmt_single_name(dev, &platform->id);
3089 if (platform->name == NULL) {
3094 platform->dev = dev;
3095 platform->driver = platform_drv;
3096 platform->dapm.dev = dev;
3097 platform->dapm.platform = platform;
3098 platform->dapm.stream_event = platform_drv->stream_event;
3100 mutex_lock(&client_mutex);
3101 list_add(&platform->list, &platform_list);
3102 snd_soc_instantiate_cards();
3103 mutex_unlock(&client_mutex);
3105 pr_debug("Registered platform '%s'\n", platform->name);
3109 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3112 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3114 * @platform: platform to unregister
3116 void snd_soc_unregister_platform(struct device *dev)
3118 struct snd_soc_platform *platform;
3120 list_for_each_entry(platform, &platform_list, list) {
3121 if (dev == platform->dev)
3127 mutex_lock(&client_mutex);
3128 list_del(&platform->list);
3129 mutex_unlock(&client_mutex);
3131 pr_debug("Unregistered platform '%s'\n", platform->name);
3132 kfree(platform->name);
3135 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3137 static u64 codec_format_map[] = {
3138 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3139 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3140 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3141 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3142 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3143 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3144 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3145 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3146 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3147 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3148 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3149 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3150 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3151 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3152 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3153 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3156 /* Fix up the DAI formats for endianness: codecs don't actually see
3157 * the endianness of the data but we're using the CPU format
3158 * definitions which do need to include endianness so we ensure that
3159 * codec DAIs always have both big and little endian variants set.
3161 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3165 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3166 if (stream->formats & codec_format_map[i])
3167 stream->formats |= codec_format_map[i];
3171 * snd_soc_register_codec - Register a codec with the ASoC core
3173 * @codec: codec to register
3175 int snd_soc_register_codec(struct device *dev,
3176 const struct snd_soc_codec_driver *codec_drv,
3177 struct snd_soc_dai_driver *dai_drv,
3181 struct snd_soc_codec *codec;
3184 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3186 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3190 /* create CODEC component name */
3191 codec->name = fmt_single_name(dev, &codec->id);
3192 if (codec->name == NULL) {
3197 if (codec_drv->compress_type)
3198 codec->compress_type = codec_drv->compress_type;
3200 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3202 codec->write = codec_drv->write;
3203 codec->read = codec_drv->read;
3204 codec->volatile_register = codec_drv->volatile_register;
3205 codec->readable_register = codec_drv->readable_register;
3206 codec->writable_register = codec_drv->writable_register;
3207 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3208 codec->dapm.dev = dev;
3209 codec->dapm.codec = codec;
3210 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3211 codec->dapm.stream_event = codec_drv->stream_event;
3213 codec->driver = codec_drv;
3214 codec->num_dai = num_dai;
3215 mutex_init(&codec->mutex);
3217 /* allocate CODEC register cache */
3218 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3219 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3220 codec->reg_size = reg_size;
3221 /* it is necessary to make a copy of the default register cache
3222 * because in the case of using a compression type that requires
3223 * the default register cache to be marked as __devinitconst the
3224 * kernel might have freed the array by the time we initialize
3227 if (codec_drv->reg_cache_default) {
3228 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3229 reg_size, GFP_KERNEL);
3230 if (!codec->reg_def_copy) {
3237 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3238 if (!codec->volatile_register)
3239 codec->volatile_register = snd_soc_default_volatile_register;
3240 if (!codec->readable_register)
3241 codec->readable_register = snd_soc_default_readable_register;
3242 if (!codec->writable_register)
3243 codec->writable_register = snd_soc_default_writable_register;
3246 for (i = 0; i < num_dai; i++) {
3247 fixup_codec_formats(&dai_drv[i].playback);
3248 fixup_codec_formats(&dai_drv[i].capture);
3251 /* register any DAIs */
3253 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3258 mutex_lock(&client_mutex);
3259 list_add(&codec->list, &codec_list);
3260 snd_soc_instantiate_cards();
3261 mutex_unlock(&client_mutex);
3263 pr_debug("Registered codec '%s'\n", codec->name);
3267 kfree(codec->reg_def_copy);
3268 codec->reg_def_copy = NULL;
3273 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3276 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3278 * @codec: codec to unregister
3280 void snd_soc_unregister_codec(struct device *dev)
3282 struct snd_soc_codec *codec;
3285 list_for_each_entry(codec, &codec_list, list) {
3286 if (dev == codec->dev)
3293 for (i = 0; i < codec->num_dai; i++)
3294 snd_soc_unregister_dai(dev);
3296 mutex_lock(&client_mutex);
3297 list_del(&codec->list);
3298 mutex_unlock(&client_mutex);
3300 pr_debug("Unregistered codec '%s'\n", codec->name);
3302 snd_soc_cache_exit(codec);
3303 kfree(codec->reg_def_copy);
3307 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3309 static int __init snd_soc_init(void)
3311 #ifdef CONFIG_DEBUG_FS
3312 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3313 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3315 "ASoC: Failed to create debugfs directory\n");
3316 snd_soc_debugfs_root = NULL;
3319 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3321 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3323 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
3325 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3327 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3328 &platform_list_fops))
3329 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3332 snd_soc_util_init();
3334 return platform_driver_register(&soc_driver);
3336 module_init(snd_soc_init);
3338 static void __exit snd_soc_exit(void)
3340 snd_soc_util_exit();
3342 #ifdef CONFIG_DEBUG_FS
3343 debugfs_remove_recursive(snd_soc_debugfs_root);
3345 platform_driver_unregister(&soc_driver);
3347 module_exit(snd_soc_exit);
3349 /* Module information */
3350 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3351 MODULE_DESCRIPTION("ALSA SoC Core");
3352 MODULE_LICENSE("GPL");
3353 MODULE_ALIAS("platform:soc-audio");