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/slab.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/core.h>
36 #include <sound/jack.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/soc.h>
40 #include <sound/initval.h>
42 #define CREATE_TRACE_POINTS
43 #include <trace/events/asoc.h>
47 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
49 #ifdef CONFIG_DEBUG_FS
50 struct dentry *snd_soc_debugfs_root;
51 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
54 static DEFINE_MUTEX(client_mutex);
55 static LIST_HEAD(card_list);
56 static LIST_HEAD(dai_list);
57 static LIST_HEAD(platform_list);
58 static LIST_HEAD(codec_list);
60 int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
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 =
173 container_of(dev, struct snd_soc_pcm_runtime, dev);
175 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
178 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
180 static ssize_t pmdown_time_show(struct device *dev,
181 struct device_attribute *attr, char *buf)
183 struct snd_soc_pcm_runtime *rtd =
184 container_of(dev, struct snd_soc_pcm_runtime, dev);
186 return sprintf(buf, "%ld\n", rtd->pmdown_time);
189 static ssize_t pmdown_time_set(struct device *dev,
190 struct device_attribute *attr,
191 const char *buf, size_t count)
193 struct snd_soc_pcm_runtime *rtd =
194 container_of(dev, struct snd_soc_pcm_runtime, dev);
197 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
204 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
206 #ifdef CONFIG_DEBUG_FS
207 static int codec_reg_open_file(struct inode *inode, struct file *file)
209 file->private_data = inode->i_private;
213 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
214 size_t count, loff_t *ppos)
217 struct snd_soc_codec *codec = file->private_data;
220 if (*ppos < 0 || !count)
223 buf = kmalloc(count, GFP_KERNEL);
227 ret = soc_codec_reg_show(codec, buf, count, *ppos);
229 if (copy_to_user(user_buf, buf, ret)) {
240 static ssize_t codec_reg_write_file(struct file *file,
241 const char __user *user_buf, size_t count, loff_t *ppos)
246 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 if (codec->driver->reg_cache_step)
256 step = codec->driver->reg_cache_step;
258 while (*start == ' ')
260 reg = simple_strtoul(start, &start, 16);
261 while (*start == ' ')
263 if (strict_strtoul(start, 16, &value))
266 /* Userspace has been fiddling around behind the kernel's back */
267 add_taint(TAINT_USER);
269 snd_soc_write(codec, reg, value);
273 static const struct file_operations codec_reg_fops = {
274 .open = codec_reg_open_file,
275 .read = codec_reg_read_file,
276 .write = codec_reg_write_file,
277 .llseek = default_llseek,
280 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
282 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
284 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
286 if (!codec->debugfs_codec_root) {
288 "ASoC: Failed to create codec debugfs directory\n");
292 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
294 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
297 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
298 codec->debugfs_codec_root,
299 codec, &codec_reg_fops);
300 if (!codec->debugfs_reg)
302 "ASoC: Failed to create codec register debugfs file\n");
304 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
307 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
309 debugfs_remove_recursive(codec->debugfs_codec_root);
312 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
313 size_t count, loff_t *ppos)
315 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
316 ssize_t len, ret = 0;
317 struct snd_soc_codec *codec;
322 list_for_each_entry(codec, &codec_list, list) {
323 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
327 if (ret > PAGE_SIZE) {
334 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
341 static const struct file_operations codec_list_fops = {
342 .read = codec_list_read_file,
343 .llseek = default_llseek,/* read accesses f_pos */
346 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
347 size_t count, loff_t *ppos)
349 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
350 ssize_t len, ret = 0;
351 struct snd_soc_dai *dai;
356 list_for_each_entry(dai, &dai_list, list) {
357 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
360 if (ret > PAGE_SIZE) {
366 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
373 static const struct file_operations dai_list_fops = {
374 .read = dai_list_read_file,
375 .llseek = default_llseek,/* read accesses f_pos */
378 static ssize_t platform_list_read_file(struct file *file,
379 char __user *user_buf,
380 size_t count, loff_t *ppos)
382 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
383 ssize_t len, ret = 0;
384 struct snd_soc_platform *platform;
389 list_for_each_entry(platform, &platform_list, list) {
390 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
394 if (ret > PAGE_SIZE) {
400 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
407 static const struct file_operations platform_list_fops = {
408 .read = platform_list_read_file,
409 .llseek = default_llseek,/* read accesses f_pos */
412 static void soc_init_card_debugfs(struct snd_soc_card *card)
414 card->debugfs_card_root = debugfs_create_dir(card->name,
415 snd_soc_debugfs_root);
416 if (!card->debugfs_card_root) {
418 "ASoC: Failed to create codec debugfs directory\n");
422 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
423 card->debugfs_card_root,
425 if (!card->debugfs_pop_time)
427 "Failed to create pop time debugfs file\n");
430 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
432 debugfs_remove_recursive(card->debugfs_card_root);
437 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
441 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
445 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
449 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
454 #ifdef CONFIG_SND_SOC_AC97_BUS
455 /* unregister ac97 codec */
456 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
458 if (codec->ac97->dev.bus)
459 device_unregister(&codec->ac97->dev);
463 /* stop no dev release warning */
464 static void soc_ac97_device_release(struct device *dev){}
466 /* register ac97 codec to bus */
467 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
471 codec->ac97->dev.bus = &ac97_bus_type;
472 codec->ac97->dev.parent = codec->card->dev;
473 codec->ac97->dev.release = soc_ac97_device_release;
475 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
476 codec->card->snd_card->number, 0, codec->name);
477 err = device_register(&codec->ac97->dev);
479 snd_printk(KERN_ERR "Can't register ac97 bus\n");
480 codec->ac97->dev.bus = NULL;
487 #ifdef CONFIG_PM_SLEEP
488 /* powers down audio subsystem for suspend */
489 int snd_soc_suspend(struct device *dev)
491 struct snd_soc_card *card = dev_get_drvdata(dev);
492 struct snd_soc_codec *codec;
495 /* If the initialization of this soc device failed, there is no codec
496 * associated with it. Just bail out in this case.
498 if (list_empty(&card->codec_dev_list))
501 /* Due to the resume being scheduled into a workqueue we could
502 * suspend before that's finished - wait for it to complete.
504 snd_power_lock(card->snd_card);
505 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
506 snd_power_unlock(card->snd_card);
508 /* we're going to block userspace touching us until resume completes */
509 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
511 /* mute any active DACs */
512 for (i = 0; i < card->num_rtd; i++) {
513 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
514 struct snd_soc_dai_driver *drv = dai->driver;
516 if (card->rtd[i].dai_link->ignore_suspend)
519 if (drv->ops->digital_mute && dai->playback_active)
520 drv->ops->digital_mute(dai, 1);
523 /* suspend all pcms */
524 for (i = 0; i < card->num_rtd; i++) {
525 if (card->rtd[i].dai_link->ignore_suspend)
528 snd_pcm_suspend_all(card->rtd[i].pcm);
531 if (card->suspend_pre)
532 card->suspend_pre(card);
534 for (i = 0; i < card->num_rtd; i++) {
535 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
536 struct snd_soc_platform *platform = card->rtd[i].platform;
538 if (card->rtd[i].dai_link->ignore_suspend)
541 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
542 cpu_dai->driver->suspend(cpu_dai);
543 if (platform->driver->suspend && !platform->suspended) {
544 platform->driver->suspend(cpu_dai);
545 platform->suspended = 1;
549 /* close any waiting streams and save state */
550 for (i = 0; i < card->num_rtd; i++) {
551 flush_delayed_work_sync(&card->rtd[i].delayed_work);
552 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
555 for (i = 0; i < card->num_rtd; i++) {
556 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
558 if (card->rtd[i].dai_link->ignore_suspend)
561 if (driver->playback.stream_name != NULL)
562 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
563 SND_SOC_DAPM_STREAM_SUSPEND);
565 if (driver->capture.stream_name != NULL)
566 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
567 SND_SOC_DAPM_STREAM_SUSPEND);
570 /* suspend all CODECs */
571 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
572 /* If there are paths active then the CODEC will be held with
573 * bias _ON and should not be suspended. */
574 if (!codec->suspended && codec->driver->suspend) {
575 switch (codec->dapm.bias_level) {
576 case SND_SOC_BIAS_STANDBY:
577 case SND_SOC_BIAS_OFF:
578 codec->driver->suspend(codec, PMSG_SUSPEND);
579 codec->suspended = 1;
580 codec->cache_sync = 1;
583 dev_dbg(codec->dev, "CODEC is on over suspend\n");
589 for (i = 0; i < card->num_rtd; i++) {
590 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
592 if (card->rtd[i].dai_link->ignore_suspend)
595 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
596 cpu_dai->driver->suspend(cpu_dai);
599 if (card->suspend_post)
600 card->suspend_post(card);
604 EXPORT_SYMBOL_GPL(snd_soc_suspend);
606 /* deferred resume work, so resume can complete before we finished
607 * setting our codec back up, which can be very slow on I2C
609 static void soc_resume_deferred(struct work_struct *work)
611 struct snd_soc_card *card =
612 container_of(work, struct snd_soc_card, deferred_resume_work);
613 struct snd_soc_codec *codec;
616 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
617 * so userspace apps are blocked from touching us
620 dev_dbg(card->dev, "starting resume work\n");
622 /* Bring us up into D2 so that DAPM starts enabling things */
623 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
625 if (card->resume_pre)
626 card->resume_pre(card);
628 /* resume AC97 DAIs */
629 for (i = 0; i < card->num_rtd; i++) {
630 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
632 if (card->rtd[i].dai_link->ignore_suspend)
635 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
636 cpu_dai->driver->resume(cpu_dai);
639 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
640 /* If the CODEC was idle over suspend then it will have been
641 * left with bias OFF or STANDBY and suspended so we must now
642 * resume. Otherwise the suspend was suppressed.
644 if (codec->driver->resume && codec->suspended) {
645 switch (codec->dapm.bias_level) {
646 case SND_SOC_BIAS_STANDBY:
647 case SND_SOC_BIAS_OFF:
648 codec->driver->resume(codec);
649 codec->suspended = 0;
652 dev_dbg(codec->dev, "CODEC was on over suspend\n");
658 for (i = 0; i < card->num_rtd; i++) {
659 struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver;
661 if (card->rtd[i].dai_link->ignore_suspend)
664 if (driver->playback.stream_name != NULL)
665 snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name,
666 SND_SOC_DAPM_STREAM_RESUME);
668 if (driver->capture.stream_name != NULL)
669 snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name,
670 SND_SOC_DAPM_STREAM_RESUME);
673 /* unmute any active DACs */
674 for (i = 0; i < card->num_rtd; i++) {
675 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
676 struct snd_soc_dai_driver *drv = dai->driver;
678 if (card->rtd[i].dai_link->ignore_suspend)
681 if (drv->ops->digital_mute && dai->playback_active)
682 drv->ops->digital_mute(dai, 0);
685 for (i = 0; i < card->num_rtd; i++) {
686 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
687 struct snd_soc_platform *platform = card->rtd[i].platform;
689 if (card->rtd[i].dai_link->ignore_suspend)
692 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
693 cpu_dai->driver->resume(cpu_dai);
694 if (platform->driver->resume && platform->suspended) {
695 platform->driver->resume(cpu_dai);
696 platform->suspended = 0;
700 if (card->resume_post)
701 card->resume_post(card);
703 dev_dbg(card->dev, "resume work completed\n");
705 /* userspace can access us now we are back as we were before */
706 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
709 /* powers up audio subsystem after a suspend */
710 int snd_soc_resume(struct device *dev)
712 struct snd_soc_card *card = dev_get_drvdata(dev);
713 int i, ac97_control = 0;
715 /* AC97 devices might have other drivers hanging off them so
716 * need to resume immediately. Other drivers don't have that
717 * problem and may take a substantial amount of time to resume
718 * due to I/O costs and anti-pop so handle them out of line.
720 for (i = 0; i < card->num_rtd; i++) {
721 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
722 ac97_control |= cpu_dai->driver->ac97_control;
725 dev_dbg(dev, "Resuming AC97 immediately\n");
726 soc_resume_deferred(&card->deferred_resume_work);
728 dev_dbg(dev, "Scheduling resume work\n");
729 if (!schedule_work(&card->deferred_resume_work))
730 dev_err(dev, "resume work item may be lost\n");
735 EXPORT_SYMBOL_GPL(snd_soc_resume);
737 #define snd_soc_suspend NULL
738 #define snd_soc_resume NULL
741 static struct snd_soc_dai_ops null_dai_ops = {
744 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
746 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
747 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
748 struct snd_soc_codec *codec;
749 struct snd_soc_platform *platform;
750 struct snd_soc_dai *codec_dai, *cpu_dai;
751 const char *platform_name;
755 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
757 /* do we already have the CPU DAI for this link ? */
761 /* no, then find CPU DAI from registered DAIs*/
762 list_for_each_entry(cpu_dai, &dai_list, list) {
763 if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) {
764 rtd->cpu_dai = cpu_dai;
768 dev_dbg(card->dev, "CPU DAI %s not registered\n",
769 dai_link->cpu_dai_name);
772 /* do we already have the CODEC for this link ? */
777 /* no, then find CODEC from registered CODECs*/
778 list_for_each_entry(codec, &codec_list, list) {
779 if (!strcmp(codec->name, dai_link->codec_name)) {
782 /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/
783 list_for_each_entry(codec_dai, &dai_list, list) {
784 if (codec->dev == codec_dai->dev &&
785 !strcmp(codec_dai->name, dai_link->codec_dai_name)) {
786 rtd->codec_dai = codec_dai;
790 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
791 dai_link->codec_dai_name);
796 dev_dbg(card->dev, "CODEC %s not registered\n",
797 dai_link->codec_name);
800 /* do we need a platform? */
804 /* if there's no platform we match on the empty platform */
805 platform_name = dai_link->platform_name;
807 platform_name = "snd-soc-dummy";
809 /* no, then find one from the set of registered platforms */
810 list_for_each_entry(platform, &platform_list, list) {
811 if (!strcmp(platform->name, platform_name)) {
812 rtd->platform = platform;
817 dev_dbg(card->dev, "platform %s not registered\n",
818 dai_link->platform_name);
822 /* mark rtd as complete if we found all 4 of our client devices */
823 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
830 static void soc_remove_codec(struct snd_soc_codec *codec)
834 if (codec->driver->remove) {
835 err = codec->driver->remove(codec);
838 "asoc: failed to remove %s: %d\n",
842 /* Make sure all DAPM widgets are freed */
843 snd_soc_dapm_free(&codec->dapm);
845 soc_cleanup_codec_debugfs(codec);
847 list_del(&codec->card_list);
848 module_put(codec->dev->driver->owner);
851 static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order)
853 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
854 struct snd_soc_codec *codec = rtd->codec;
855 struct snd_soc_platform *platform = rtd->platform;
856 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
859 /* unregister the rtd device */
860 if (rtd->dev_registered) {
861 device_remove_file(&rtd->dev, &dev_attr_pmdown_time);
862 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
863 device_unregister(&rtd->dev);
864 rtd->dev_registered = 0;
867 /* remove the CODEC DAI */
868 if (codec_dai && codec_dai->probed &&
869 codec_dai->driver->remove_order == order) {
870 if (codec_dai->driver->remove) {
871 err = codec_dai->driver->remove(codec_dai);
873 printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name);
875 codec_dai->probed = 0;
876 list_del(&codec_dai->card_list);
879 /* remove the platform */
880 if (platform && platform->probed &&
881 platform->driver->remove_order == order) {
882 if (platform->driver->remove) {
883 err = platform->driver->remove(platform);
885 printk(KERN_ERR "asoc: failed to remove %s\n", platform->name);
887 platform->probed = 0;
888 list_del(&platform->card_list);
889 module_put(platform->dev->driver->owner);
892 /* remove the CODEC */
893 if (codec && codec->probed &&
894 codec->driver->remove_order == order)
895 soc_remove_codec(codec);
897 /* remove the cpu_dai */
898 if (cpu_dai && cpu_dai->probed &&
899 cpu_dai->driver->remove_order == order) {
900 if (cpu_dai->driver->remove) {
901 err = cpu_dai->driver->remove(cpu_dai);
903 printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name);
906 list_del(&cpu_dai->card_list);
907 module_put(cpu_dai->dev->driver->owner);
911 static void soc_remove_dai_links(struct snd_soc_card *card)
915 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
917 for (dai = 0; dai < card->num_rtd; dai++)
918 soc_remove_dai_link(card, dai, order);
923 static void soc_set_name_prefix(struct snd_soc_card *card,
924 struct snd_soc_codec *codec)
928 if (card->codec_conf == NULL)
931 for (i = 0; i < card->num_configs; i++) {
932 struct snd_soc_codec_conf *map = &card->codec_conf[i];
933 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
934 codec->name_prefix = map->name_prefix;
940 static int soc_probe_codec(struct snd_soc_card *card,
941 struct snd_soc_codec *codec)
944 const struct snd_soc_codec_driver *driver = codec->driver;
947 codec->dapm.card = card;
948 soc_set_name_prefix(card, codec);
950 if (!try_module_get(codec->dev->driver->owner))
953 soc_init_codec_debugfs(codec);
955 if (driver->dapm_widgets)
956 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
957 driver->num_dapm_widgets);
959 codec->dapm.idle_bias_off = driver->idle_bias_off;
962 ret = driver->probe(codec);
965 "asoc: failed to probe CODEC %s: %d\n",
971 if (driver->controls)
972 snd_soc_add_controls(codec, driver->controls,
973 driver->num_controls);
974 if (driver->dapm_routes)
975 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
976 driver->num_dapm_routes);
978 /* mark codec as probed and add to card codec list */
980 list_add(&codec->card_list, &card->codec_dev_list);
981 list_add(&codec->dapm.list, &card->dapm_list);
986 soc_cleanup_codec_debugfs(codec);
987 module_put(codec->dev->driver->owner);
992 static int soc_probe_platform(struct snd_soc_card *card,
993 struct snd_soc_platform *platform)
996 const struct snd_soc_platform_driver *driver = platform->driver;
998 platform->card = card;
999 platform->dapm.card = card;
1001 if (!try_module_get(platform->dev->driver->owner))
1004 if (driver->dapm_widgets)
1005 snd_soc_dapm_new_controls(&platform->dapm,
1006 driver->dapm_widgets, driver->num_dapm_widgets);
1008 if (driver->probe) {
1009 ret = driver->probe(platform);
1011 dev_err(platform->dev,
1012 "asoc: failed to probe platform %s: %d\n",
1013 platform->name, ret);
1018 if (driver->controls)
1019 snd_soc_add_platform_controls(platform, driver->controls,
1020 driver->num_controls);
1021 if (driver->dapm_routes)
1022 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1023 driver->num_dapm_routes);
1025 /* mark platform as probed and add to card platform list */
1026 platform->probed = 1;
1027 list_add(&platform->card_list, &card->platform_dev_list);
1028 list_add(&platform->dapm.list, &card->dapm_list);
1033 module_put(platform->dev->driver->owner);
1038 static void rtd_release(struct device *dev) {}
1040 static int soc_post_component_init(struct snd_soc_card *card,
1041 struct snd_soc_codec *codec,
1042 int num, int dailess)
1044 struct snd_soc_dai_link *dai_link = NULL;
1045 struct snd_soc_aux_dev *aux_dev = NULL;
1046 struct snd_soc_pcm_runtime *rtd;
1047 const char *temp, *name;
1051 dai_link = &card->dai_link[num];
1052 rtd = &card->rtd[num];
1053 name = dai_link->name;
1055 aux_dev = &card->aux_dev[num];
1056 rtd = &card->rtd_aux[num];
1057 name = aux_dev->name;
1061 /* machine controls, routes and widgets are not prefixed */
1062 temp = codec->name_prefix;
1063 codec->name_prefix = NULL;
1065 /* do machine specific initialization */
1066 if (!dailess && dai_link->init)
1067 ret = dai_link->init(rtd);
1068 else if (dailess && aux_dev->init)
1069 ret = aux_dev->init(&codec->dapm);
1071 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1074 codec->name_prefix = temp;
1076 /* Make sure all DAPM widgets are instantiated */
1077 snd_soc_dapm_new_widgets(&codec->dapm);
1079 /* register the rtd device */
1081 rtd->dev.parent = card->dev;
1082 rtd->dev.release = rtd_release;
1083 rtd->dev.init_name = name;
1084 mutex_init(&rtd->pcm_mutex);
1085 ret = device_register(&rtd->dev);
1088 "asoc: failed to register runtime device: %d\n", ret);
1091 rtd->dev_registered = 1;
1093 /* add DAPM sysfs entries for this codec */
1094 ret = snd_soc_dapm_sys_add(&rtd->dev);
1097 "asoc: failed to add codec dapm sysfs entries: %d\n",
1100 /* add codec sysfs entries */
1101 ret = device_create_file(&rtd->dev, &dev_attr_codec_reg);
1104 "asoc: failed to add codec sysfs files: %d\n", ret);
1109 static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
1111 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1112 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1113 struct snd_soc_codec *codec = rtd->codec;
1114 struct snd_soc_platform *platform = rtd->platform;
1115 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1118 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1119 card->name, num, order);
1121 /* config components */
1122 codec_dai->codec = codec;
1123 cpu_dai->platform = platform;
1124 codec_dai->card = card;
1125 cpu_dai->card = card;
1127 /* set default power off timeout */
1128 rtd->pmdown_time = pmdown_time;
1130 /* probe the cpu_dai */
1131 if (!cpu_dai->probed &&
1132 cpu_dai->driver->probe_order == order) {
1133 if (!try_module_get(cpu_dai->dev->driver->owner))
1136 if (cpu_dai->driver->probe) {
1137 ret = cpu_dai->driver->probe(cpu_dai);
1139 printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n",
1141 module_put(cpu_dai->dev->driver->owner);
1145 cpu_dai->probed = 1;
1146 /* mark cpu_dai as probed and add to card dai list */
1147 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1150 /* probe the CODEC */
1151 if (!codec->probed &&
1152 codec->driver->probe_order == order) {
1153 ret = soc_probe_codec(card, codec);
1158 /* probe the platform */
1159 if (!platform->probed &&
1160 platform->driver->probe_order == order) {
1161 ret = soc_probe_platform(card, platform);
1166 /* probe the CODEC DAI */
1167 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1168 if (codec_dai->driver->probe) {
1169 ret = codec_dai->driver->probe(codec_dai);
1171 printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n",
1177 /* mark codec_dai as probed and add to card dai list */
1178 codec_dai->probed = 1;
1179 list_add(&codec_dai->card_list, &card->dai_dev_list);
1182 /* complete DAI probe during last probe */
1183 if (order != SND_SOC_COMP_ORDER_LAST)
1186 ret = soc_post_component_init(card, codec, num, 0);
1190 ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time);
1192 printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n");
1194 /* create the pcm */
1195 ret = soc_new_pcm(rtd, num);
1197 printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name);
1201 /* add platform data for AC97 devices */
1202 if (rtd->codec_dai->driver->ac97_control)
1203 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1208 #ifdef CONFIG_SND_SOC_AC97_BUS
1209 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1213 /* Only instantiate AC97 if not already done by the adaptor
1214 * for the generic AC97 subsystem.
1216 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1218 * It is possible that the AC97 device is already registered to
1219 * the device subsystem. This happens when the device is created
1220 * via snd_ac97_mixer(). Currently only SoC codec that does so
1221 * is the generic AC97 glue but others migh emerge.
1223 * In those cases we don't try to register the device again.
1225 if (!rtd->codec->ac97_created)
1228 ret = soc_ac97_dev_register(rtd->codec);
1230 printk(KERN_ERR "asoc: AC97 device register failed\n");
1234 rtd->codec->ac97_registered = 1;
1239 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1241 if (codec->ac97_registered) {
1242 soc_ac97_dev_unregister(codec);
1243 codec->ac97_registered = 0;
1248 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1250 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1251 struct snd_soc_codec *codec;
1254 /* find CODEC from registered CODECs*/
1255 list_for_each_entry(codec, &codec_list, list) {
1256 if (!strcmp(codec->name, aux_dev->codec_name)) {
1257 if (codec->probed) {
1259 "asoc: codec already probed");
1266 /* codec not found */
1267 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1271 ret = soc_probe_codec(card, codec);
1275 ret = soc_post_component_init(card, codec, num, 1);
1281 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1283 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1284 struct snd_soc_codec *codec = rtd->codec;
1286 /* unregister the rtd device */
1287 if (rtd->dev_registered) {
1288 device_remove_file(&rtd->dev, &dev_attr_codec_reg);
1289 device_unregister(&rtd->dev);
1290 rtd->dev_registered = 0;
1293 if (codec && codec->probed)
1294 soc_remove_codec(codec);
1297 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1298 enum snd_soc_compress_type compress_type)
1302 if (codec->cache_init)
1305 /* override the compress_type if necessary */
1306 if (compress_type && codec->compress_type != compress_type)
1307 codec->compress_type = compress_type;
1308 ret = snd_soc_cache_init(codec);
1310 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1314 codec->cache_init = 1;
1318 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1320 struct snd_soc_codec *codec;
1321 struct snd_soc_codec_conf *codec_conf;
1322 enum snd_soc_compress_type compress_type;
1325 mutex_lock(&card->mutex);
1327 if (card->instantiated) {
1328 mutex_unlock(&card->mutex);
1333 for (i = 0; i < card->num_links; i++)
1334 soc_bind_dai_link(card, i);
1336 /* bind completed ? */
1337 if (card->num_rtd != card->num_links) {
1338 mutex_unlock(&card->mutex);
1342 /* initialize the register cache for each available codec */
1343 list_for_each_entry(codec, &codec_list, list) {
1344 if (codec->cache_init)
1346 /* by default we don't override the compress_type */
1348 /* check to see if we need to override the compress_type */
1349 for (i = 0; i < card->num_configs; ++i) {
1350 codec_conf = &card->codec_conf[i];
1351 if (!strcmp(codec->name, codec_conf->dev_name)) {
1352 compress_type = codec_conf->compress_type;
1353 if (compress_type && compress_type
1354 != codec->compress_type)
1358 ret = snd_soc_init_codec_cache(codec, compress_type);
1360 mutex_unlock(&card->mutex);
1365 /* card bind complete so register a sound card */
1366 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1367 card->owner, 0, &card->snd_card);
1369 printk(KERN_ERR "asoc: can't create sound card for card %s\n",
1371 mutex_unlock(&card->mutex);
1374 card->snd_card->dev = card->dev;
1376 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1377 card->dapm.dev = card->dev;
1378 card->dapm.card = card;
1379 list_add(&card->dapm.list, &card->dapm_list);
1381 #ifdef CONFIG_DEBUG_FS
1382 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1385 #ifdef CONFIG_PM_SLEEP
1386 /* deferred resume work */
1387 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1390 if (card->dapm_widgets)
1391 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1392 card->num_dapm_widgets);
1394 /* initialise the sound card only once */
1396 ret = card->probe(card);
1398 goto card_probe_error;
1401 /* early DAI link probe */
1402 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1404 for (i = 0; i < card->num_links; i++) {
1405 ret = soc_probe_dai_link(card, i, order);
1407 pr_err("asoc: failed to instantiate card %s: %d\n",
1414 for (i = 0; i < card->num_aux_devs; i++) {
1415 ret = soc_probe_aux_dev(card, i);
1417 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1419 goto probe_aux_dev_err;
1423 /* We should have a non-codec control add function but we don't */
1425 snd_soc_add_controls(list_first_entry(&card->codec_dev_list,
1426 struct snd_soc_codec,
1429 card->num_controls);
1431 if (card->dapm_routes)
1432 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1433 card->num_dapm_routes);
1435 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1437 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1438 "%s", card->long_name ? card->long_name : card->name);
1439 if (card->driver_name)
1440 strlcpy(card->snd_card->driver, card->driver_name,
1441 sizeof(card->snd_card->driver));
1443 if (card->late_probe) {
1444 ret = card->late_probe(card);
1446 dev_err(card->dev, "%s late_probe() failed: %d\n",
1448 goto probe_aux_dev_err;
1452 ret = snd_card_register(card->snd_card);
1454 printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name);
1455 goto probe_aux_dev_err;
1458 #ifdef CONFIG_SND_SOC_AC97_BUS
1459 /* register any AC97 codecs */
1460 for (i = 0; i < card->num_rtd; i++) {
1461 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1463 printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
1465 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1466 goto probe_aux_dev_err;
1471 card->instantiated = 1;
1472 mutex_unlock(&card->mutex);
1476 for (i = 0; i < card->num_aux_devs; i++)
1477 soc_remove_aux_dev(card, i);
1480 soc_remove_dai_links(card);
1486 snd_card_free(card->snd_card);
1488 mutex_unlock(&card->mutex);
1492 * Attempt to initialise any uninitialised cards. Must be called with
1495 static void snd_soc_instantiate_cards(void)
1497 struct snd_soc_card *card;
1498 list_for_each_entry(card, &card_list, list)
1499 snd_soc_instantiate_card(card);
1502 /* probes a new socdev */
1503 static int soc_probe(struct platform_device *pdev)
1505 struct snd_soc_card *card = platform_get_drvdata(pdev);
1509 * no card, so machine driver should be registering card
1510 * we should not be here in that case so ret error
1515 /* Bodge while we unpick instantiation */
1516 card->dev = &pdev->dev;
1518 ret = snd_soc_register_card(card);
1520 dev_err(&pdev->dev, "Failed to register card\n");
1527 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1531 /* make sure any delayed work runs */
1532 for (i = 0; i < card->num_rtd; i++) {
1533 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1534 flush_delayed_work_sync(&rtd->delayed_work);
1537 /* remove auxiliary devices */
1538 for (i = 0; i < card->num_aux_devs; i++)
1539 soc_remove_aux_dev(card, i);
1541 /* remove and free each DAI */
1542 soc_remove_dai_links(card);
1544 soc_cleanup_card_debugfs(card);
1546 /* remove the card */
1550 snd_soc_dapm_free(&card->dapm);
1553 snd_card_free(card->snd_card);
1558 /* removes a socdev */
1559 static int soc_remove(struct platform_device *pdev)
1561 struct snd_soc_card *card = platform_get_drvdata(pdev);
1563 snd_soc_unregister_card(card);
1567 int snd_soc_poweroff(struct device *dev)
1569 struct snd_soc_card *card = dev_get_drvdata(dev);
1572 if (!card->instantiated)
1575 /* Flush out pmdown_time work - we actually do want to run it
1576 * now, we're shutting down so no imminent restart. */
1577 for (i = 0; i < card->num_rtd; i++) {
1578 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1579 flush_delayed_work_sync(&rtd->delayed_work);
1582 snd_soc_dapm_shutdown(card);
1586 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1588 const struct dev_pm_ops snd_soc_pm_ops = {
1589 .suspend = snd_soc_suspend,
1590 .resume = snd_soc_resume,
1591 .poweroff = snd_soc_poweroff,
1593 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1595 /* ASoC platform driver */
1596 static struct platform_driver soc_driver = {
1598 .name = "soc-audio",
1599 .owner = THIS_MODULE,
1600 .pm = &snd_soc_pm_ops,
1603 .remove = soc_remove,
1607 * snd_soc_codec_volatile_register: Report if a register is volatile.
1609 * @codec: CODEC to query.
1610 * @reg: Register to query.
1612 * Boolean function indiciating if a CODEC register is volatile.
1614 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1617 if (codec->volatile_register)
1618 return codec->volatile_register(codec, reg);
1622 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1625 * snd_soc_codec_readable_register: Report if a register is readable.
1627 * @codec: CODEC to query.
1628 * @reg: Register to query.
1630 * Boolean function indicating if a CODEC register is readable.
1632 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1635 if (codec->readable_register)
1636 return codec->readable_register(codec, reg);
1640 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1643 * snd_soc_codec_writable_register: Report if a register is writable.
1645 * @codec: CODEC to query.
1646 * @reg: Register to query.
1648 * Boolean function indicating if a CODEC register is writable.
1650 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1653 if (codec->writable_register)
1654 return codec->writable_register(codec, reg);
1658 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1660 int snd_soc_platform_read(struct snd_soc_platform *platform,
1665 if (!platform->driver->read) {
1666 dev_err(platform->dev, "platform has no read back\n");
1670 ret = platform->driver->read(platform, reg);
1671 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1672 trace_snd_soc_preg_read(platform, reg, ret);
1676 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1678 int snd_soc_platform_write(struct snd_soc_platform *platform,
1679 unsigned int reg, unsigned int val)
1681 if (!platform->driver->write) {
1682 dev_err(platform->dev, "platform has no write back\n");
1686 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
1687 trace_snd_soc_preg_write(platform, reg, val);
1688 return platform->driver->write(platform, reg, val);
1690 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1693 * snd_soc_new_ac97_codec - initailise AC97 device
1694 * @codec: audio codec
1695 * @ops: AC97 bus operations
1696 * @num: AC97 codec number
1698 * Initialises AC97 codec resources for use by ad-hoc devices only.
1700 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1701 struct snd_ac97_bus_ops *ops, int num)
1703 mutex_lock(&codec->mutex);
1705 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1706 if (codec->ac97 == NULL) {
1707 mutex_unlock(&codec->mutex);
1711 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1712 if (codec->ac97->bus == NULL) {
1715 mutex_unlock(&codec->mutex);
1719 codec->ac97->bus->ops = ops;
1720 codec->ac97->num = num;
1723 * Mark the AC97 device to be created by us. This way we ensure that the
1724 * device will be registered with the device subsystem later on.
1726 codec->ac97_created = 1;
1728 mutex_unlock(&codec->mutex);
1731 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1734 * snd_soc_free_ac97_codec - free AC97 codec device
1735 * @codec: audio codec
1737 * Frees AC97 codec device resources.
1739 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1741 mutex_lock(&codec->mutex);
1742 #ifdef CONFIG_SND_SOC_AC97_BUS
1743 soc_unregister_ac97_dai_link(codec);
1745 kfree(codec->ac97->bus);
1748 codec->ac97_created = 0;
1749 mutex_unlock(&codec->mutex);
1751 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1753 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1757 ret = codec->read(codec, reg);
1758 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
1759 trace_snd_soc_reg_read(codec, reg, ret);
1763 EXPORT_SYMBOL_GPL(snd_soc_read);
1765 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1766 unsigned int reg, unsigned int val)
1768 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
1769 trace_snd_soc_reg_write(codec, reg, val);
1770 return codec->write(codec, reg, val);
1772 EXPORT_SYMBOL_GPL(snd_soc_write);
1774 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1775 unsigned int reg, const void *data, size_t len)
1777 return codec->bulk_write_raw(codec, reg, data, len);
1779 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1782 * snd_soc_update_bits - update codec register bits
1783 * @codec: audio codec
1784 * @reg: codec register
1785 * @mask: register mask
1788 * Writes new register value.
1790 * Returns 1 for change, 0 for no change, or negative error code.
1792 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
1793 unsigned int mask, unsigned int value)
1796 unsigned int old, new;
1799 ret = snd_soc_read(codec, reg);
1804 new = (old & ~mask) | (value & mask);
1805 change = old != new;
1807 ret = snd_soc_write(codec, reg, new);
1814 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1817 * snd_soc_update_bits_locked - update codec register bits
1818 * @codec: audio codec
1819 * @reg: codec register
1820 * @mask: register mask
1823 * Writes new register value, and takes the codec mutex.
1825 * Returns 1 for change else 0.
1827 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1828 unsigned short reg, unsigned int mask,
1833 mutex_lock(&codec->mutex);
1834 change = snd_soc_update_bits(codec, reg, mask, value);
1835 mutex_unlock(&codec->mutex);
1839 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
1842 * snd_soc_test_bits - test register for change
1843 * @codec: audio codec
1844 * @reg: codec register
1845 * @mask: register mask
1848 * Tests a register with a new value and checks if the new value is
1849 * different from the old value.
1851 * Returns 1 for change else 0.
1853 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
1854 unsigned int mask, unsigned int value)
1857 unsigned int old, new;
1859 old = snd_soc_read(codec, reg);
1860 new = (old & ~mask) | value;
1861 change = old != new;
1865 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
1868 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
1869 * @substream: the pcm substream
1870 * @hw: the hardware parameters
1872 * Sets the substream runtime hardware parameters.
1874 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
1875 const struct snd_pcm_hardware *hw)
1877 struct snd_pcm_runtime *runtime = substream->runtime;
1878 runtime->hw.info = hw->info;
1879 runtime->hw.formats = hw->formats;
1880 runtime->hw.period_bytes_min = hw->period_bytes_min;
1881 runtime->hw.period_bytes_max = hw->period_bytes_max;
1882 runtime->hw.periods_min = hw->periods_min;
1883 runtime->hw.periods_max = hw->periods_max;
1884 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
1885 runtime->hw.fifo_size = hw->fifo_size;
1888 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
1891 * snd_soc_cnew - create new control
1892 * @_template: control template
1893 * @data: control private data
1894 * @long_name: control long name
1895 * @prefix: control name prefix
1897 * Create a new mixer control from a template control.
1899 * Returns 0 for success, else error.
1901 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
1902 void *data, char *long_name,
1905 struct snd_kcontrol_new template;
1906 struct snd_kcontrol *kcontrol;
1910 memcpy(&template, _template, sizeof(template));
1914 long_name = template.name;
1917 name_len = strlen(long_name) + strlen(prefix) + 2;
1918 name = kmalloc(name_len, GFP_KERNEL);
1922 snprintf(name, name_len, "%s %s", prefix, long_name);
1924 template.name = name;
1926 template.name = long_name;
1929 kcontrol = snd_ctl_new1(&template, data);
1935 EXPORT_SYMBOL_GPL(snd_soc_cnew);
1938 * snd_soc_add_controls - add an array of controls to a codec.
1939 * Convienience function to add a list of controls. Many codecs were
1940 * duplicating this code.
1942 * @codec: codec to add controls to
1943 * @controls: array of controls to add
1944 * @num_controls: number of elements in the array
1946 * Return 0 for success, else error.
1948 int snd_soc_add_controls(struct snd_soc_codec *codec,
1949 const struct snd_kcontrol_new *controls, int num_controls)
1951 struct snd_card *card = codec->card->snd_card;
1954 for (i = 0; i < num_controls; i++) {
1955 const struct snd_kcontrol_new *control = &controls[i];
1956 err = snd_ctl_add(card, snd_soc_cnew(control, codec,
1958 codec->name_prefix));
1960 dev_err(codec->dev, "%s: Failed to add %s: %d\n",
1961 codec->name, control->name, err);
1968 EXPORT_SYMBOL_GPL(snd_soc_add_controls);
1971 * snd_soc_add_platform_controls - add an array of controls to a platform.
1972 * Convienience function to add a list of controls.
1974 * @platform: platform to add controls to
1975 * @controls: array of controls to add
1976 * @num_controls: number of elements in the array
1978 * Return 0 for success, else error.
1980 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
1981 const struct snd_kcontrol_new *controls, int num_controls)
1983 struct snd_card *card = platform->card->snd_card;
1986 for (i = 0; i < num_controls; i++) {
1987 const struct snd_kcontrol_new *control = &controls[i];
1988 err = snd_ctl_add(card, snd_soc_cnew(control, platform,
1989 control->name, NULL));
1991 dev_err(platform->dev, "Failed to add %s %d\n",control->name, err);
1998 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2001 * snd_soc_info_enum_double - enumerated double mixer info callback
2002 * @kcontrol: mixer control
2003 * @uinfo: control element information
2005 * Callback to provide information about a double enumerated
2008 * Returns 0 for success.
2010 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2011 struct snd_ctl_elem_info *uinfo)
2013 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2015 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2016 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2017 uinfo->value.enumerated.items = e->max;
2019 if (uinfo->value.enumerated.item > e->max - 1)
2020 uinfo->value.enumerated.item = e->max - 1;
2021 strcpy(uinfo->value.enumerated.name,
2022 e->texts[uinfo->value.enumerated.item]);
2025 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2028 * snd_soc_get_enum_double - enumerated double mixer get callback
2029 * @kcontrol: mixer control
2030 * @ucontrol: control element information
2032 * Callback to get the value of a double enumerated mixer.
2034 * Returns 0 for success.
2036 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2037 struct snd_ctl_elem_value *ucontrol)
2039 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2040 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2041 unsigned int val, bitmask;
2043 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2045 val = snd_soc_read(codec, e->reg);
2046 ucontrol->value.enumerated.item[0]
2047 = (val >> e->shift_l) & (bitmask - 1);
2048 if (e->shift_l != e->shift_r)
2049 ucontrol->value.enumerated.item[1] =
2050 (val >> e->shift_r) & (bitmask - 1);
2054 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2057 * snd_soc_put_enum_double - enumerated double mixer put callback
2058 * @kcontrol: mixer control
2059 * @ucontrol: control element information
2061 * Callback to set the value of a double enumerated mixer.
2063 * Returns 0 for success.
2065 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2066 struct snd_ctl_elem_value *ucontrol)
2068 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2069 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2071 unsigned int mask, bitmask;
2073 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2075 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2077 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2078 mask = (bitmask - 1) << e->shift_l;
2079 if (e->shift_l != e->shift_r) {
2080 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2082 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2083 mask |= (bitmask - 1) << e->shift_r;
2086 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2088 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2091 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2092 * @kcontrol: mixer control
2093 * @ucontrol: control element information
2095 * Callback to get the value of a double semi enumerated mixer.
2097 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2098 * used for handling bitfield coded enumeration for example.
2100 * Returns 0 for success.
2102 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2103 struct snd_ctl_elem_value *ucontrol)
2105 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2106 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2107 unsigned int reg_val, val, mux;
2109 reg_val = snd_soc_read(codec, e->reg);
2110 val = (reg_val >> e->shift_l) & e->mask;
2111 for (mux = 0; mux < e->max; mux++) {
2112 if (val == e->values[mux])
2115 ucontrol->value.enumerated.item[0] = mux;
2116 if (e->shift_l != e->shift_r) {
2117 val = (reg_val >> e->shift_r) & e->mask;
2118 for (mux = 0; mux < e->max; mux++) {
2119 if (val == e->values[mux])
2122 ucontrol->value.enumerated.item[1] = mux;
2127 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2130 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2131 * @kcontrol: mixer control
2132 * @ucontrol: control element information
2134 * Callback to set the value of a double semi enumerated mixer.
2136 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2137 * used for handling bitfield coded enumeration for example.
2139 * Returns 0 for success.
2141 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2142 struct snd_ctl_elem_value *ucontrol)
2144 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2145 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2149 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2151 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2152 mask = e->mask << e->shift_l;
2153 if (e->shift_l != e->shift_r) {
2154 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2156 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2157 mask |= e->mask << e->shift_r;
2160 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2162 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2165 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2166 * @kcontrol: mixer control
2167 * @uinfo: control element information
2169 * Callback to provide information about an external enumerated
2172 * Returns 0 for success.
2174 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2175 struct snd_ctl_elem_info *uinfo)
2177 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2179 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2181 uinfo->value.enumerated.items = e->max;
2183 if (uinfo->value.enumerated.item > e->max - 1)
2184 uinfo->value.enumerated.item = e->max - 1;
2185 strcpy(uinfo->value.enumerated.name,
2186 e->texts[uinfo->value.enumerated.item]);
2189 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2192 * snd_soc_info_volsw_ext - external single mixer info callback
2193 * @kcontrol: mixer control
2194 * @uinfo: control element information
2196 * Callback to provide information about a single external mixer control.
2198 * Returns 0 for success.
2200 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2201 struct snd_ctl_elem_info *uinfo)
2203 int max = kcontrol->private_value;
2205 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2206 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2208 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2211 uinfo->value.integer.min = 0;
2212 uinfo->value.integer.max = max;
2215 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2218 * snd_soc_info_volsw - single mixer info callback
2219 * @kcontrol: mixer control
2220 * @uinfo: control element information
2222 * Callback to provide information about a single mixer control.
2224 * Returns 0 for success.
2226 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2227 struct snd_ctl_elem_info *uinfo)
2229 struct soc_mixer_control *mc =
2230 (struct soc_mixer_control *)kcontrol->private_value;
2232 unsigned int shift = mc->shift;
2233 unsigned int rshift = mc->rshift;
2235 if (!mc->platform_max)
2236 mc->platform_max = mc->max;
2237 platform_max = mc->platform_max;
2239 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2240 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2242 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2244 uinfo->count = shift == rshift ? 1 : 2;
2245 uinfo->value.integer.min = 0;
2246 uinfo->value.integer.max = platform_max;
2249 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2252 * snd_soc_get_volsw - single mixer get callback
2253 * @kcontrol: mixer control
2254 * @ucontrol: control element information
2256 * Callback to get the value of a single mixer control.
2258 * Returns 0 for success.
2260 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2261 struct snd_ctl_elem_value *ucontrol)
2263 struct soc_mixer_control *mc =
2264 (struct soc_mixer_control *)kcontrol->private_value;
2265 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2266 unsigned int reg = mc->reg;
2267 unsigned int shift = mc->shift;
2268 unsigned int rshift = mc->rshift;
2270 unsigned int mask = (1 << fls(max)) - 1;
2271 unsigned int invert = mc->invert;
2273 ucontrol->value.integer.value[0] =
2274 (snd_soc_read(codec, reg) >> shift) & mask;
2275 if (shift != rshift)
2276 ucontrol->value.integer.value[1] =
2277 (snd_soc_read(codec, reg) >> rshift) & mask;
2279 ucontrol->value.integer.value[0] =
2280 max - ucontrol->value.integer.value[0];
2281 if (shift != rshift)
2282 ucontrol->value.integer.value[1] =
2283 max - ucontrol->value.integer.value[1];
2288 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2291 * snd_soc_put_volsw - single mixer put callback
2292 * @kcontrol: mixer control
2293 * @ucontrol: control element information
2295 * Callback to set the value of a single mixer control.
2297 * Returns 0 for success.
2299 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2300 struct snd_ctl_elem_value *ucontrol)
2302 struct soc_mixer_control *mc =
2303 (struct soc_mixer_control *)kcontrol->private_value;
2304 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2305 unsigned int reg = mc->reg;
2306 unsigned int shift = mc->shift;
2307 unsigned int rshift = mc->rshift;
2309 unsigned int mask = (1 << fls(max)) - 1;
2310 unsigned int invert = mc->invert;
2311 unsigned int val, val2, val_mask;
2313 val = (ucontrol->value.integer.value[0] & mask);
2316 val_mask = mask << shift;
2318 if (shift != rshift) {
2319 val2 = (ucontrol->value.integer.value[1] & mask);
2322 val_mask |= mask << rshift;
2323 val |= val2 << rshift;
2325 return snd_soc_update_bits_locked(codec, reg, val_mask, val);
2327 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2330 * snd_soc_info_volsw_2r - double mixer info callback
2331 * @kcontrol: mixer control
2332 * @uinfo: control element information
2334 * Callback to provide information about a double mixer control that
2335 * spans 2 codec registers.
2337 * Returns 0 for success.
2339 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
2340 struct snd_ctl_elem_info *uinfo)
2342 struct soc_mixer_control *mc =
2343 (struct soc_mixer_control *)kcontrol->private_value;
2346 if (!mc->platform_max)
2347 mc->platform_max = mc->max;
2348 platform_max = mc->platform_max;
2350 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2351 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2353 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2356 uinfo->value.integer.min = 0;
2357 uinfo->value.integer.max = platform_max;
2360 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r);
2363 * snd_soc_get_volsw_2r - double mixer get callback
2364 * @kcontrol: mixer control
2365 * @ucontrol: control element information
2367 * Callback to get the value of a double mixer control that spans 2 registers.
2369 * Returns 0 for success.
2371 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
2372 struct snd_ctl_elem_value *ucontrol)
2374 struct soc_mixer_control *mc =
2375 (struct soc_mixer_control *)kcontrol->private_value;
2376 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2377 unsigned int reg = mc->reg;
2378 unsigned int reg2 = mc->rreg;
2379 unsigned int shift = mc->shift;
2381 unsigned int mask = (1 << fls(max)) - 1;
2382 unsigned int invert = mc->invert;
2384 ucontrol->value.integer.value[0] =
2385 (snd_soc_read(codec, reg) >> shift) & mask;
2386 ucontrol->value.integer.value[1] =
2387 (snd_soc_read(codec, reg2) >> shift) & mask;
2389 ucontrol->value.integer.value[0] =
2390 max - ucontrol->value.integer.value[0];
2391 ucontrol->value.integer.value[1] =
2392 max - ucontrol->value.integer.value[1];
2397 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
2400 * snd_soc_put_volsw_2r - double mixer set callback
2401 * @kcontrol: mixer control
2402 * @ucontrol: control element information
2404 * Callback to set the value of a double mixer control that spans 2 registers.
2406 * Returns 0 for success.
2408 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
2409 struct snd_ctl_elem_value *ucontrol)
2411 struct soc_mixer_control *mc =
2412 (struct soc_mixer_control *)kcontrol->private_value;
2413 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2414 unsigned int reg = mc->reg;
2415 unsigned int reg2 = mc->rreg;
2416 unsigned int shift = mc->shift;
2418 unsigned int mask = (1 << fls(max)) - 1;
2419 unsigned int invert = mc->invert;
2421 unsigned int val, val2, val_mask;
2423 val_mask = mask << shift;
2424 val = (ucontrol->value.integer.value[0] & mask);
2425 val2 = (ucontrol->value.integer.value[1] & mask);
2433 val2 = val2 << shift;
2435 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2439 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2442 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
2445 * snd_soc_info_volsw_s8 - signed mixer info callback
2446 * @kcontrol: mixer control
2447 * @uinfo: control element information
2449 * Callback to provide information about a signed mixer control.
2451 * Returns 0 for success.
2453 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2454 struct snd_ctl_elem_info *uinfo)
2456 struct soc_mixer_control *mc =
2457 (struct soc_mixer_control *)kcontrol->private_value;
2461 if (!mc->platform_max)
2462 mc->platform_max = mc->max;
2463 platform_max = mc->platform_max;
2465 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2467 uinfo->value.integer.min = 0;
2468 uinfo->value.integer.max = platform_max - min;
2471 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2474 * snd_soc_get_volsw_s8 - signed mixer get callback
2475 * @kcontrol: mixer control
2476 * @ucontrol: control element information
2478 * Callback to get the value of a signed mixer control.
2480 * Returns 0 for success.
2482 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2483 struct snd_ctl_elem_value *ucontrol)
2485 struct soc_mixer_control *mc =
2486 (struct soc_mixer_control *)kcontrol->private_value;
2487 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2488 unsigned int reg = mc->reg;
2490 int val = snd_soc_read(codec, reg);
2492 ucontrol->value.integer.value[0] =
2493 ((signed char)(val & 0xff))-min;
2494 ucontrol->value.integer.value[1] =
2495 ((signed char)((val >> 8) & 0xff))-min;
2498 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2501 * snd_soc_put_volsw_sgn - signed mixer put callback
2502 * @kcontrol: mixer control
2503 * @ucontrol: control element information
2505 * Callback to set the value of a signed mixer control.
2507 * Returns 0 for success.
2509 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
2510 struct snd_ctl_elem_value *ucontrol)
2512 struct soc_mixer_control *mc =
2513 (struct soc_mixer_control *)kcontrol->private_value;
2514 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2515 unsigned int reg = mc->reg;
2519 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2520 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2522 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2524 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2527 * snd_soc_limit_volume - Set new limit to an existing volume control.
2529 * @codec: where to look for the control
2530 * @name: Name of the control
2531 * @max: new maximum limit
2533 * Return 0 for success, else error.
2535 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2536 const char *name, int max)
2538 struct snd_card *card = codec->card->snd_card;
2539 struct snd_kcontrol *kctl;
2540 struct soc_mixer_control *mc;
2544 /* Sanity check for name and max */
2545 if (unlikely(!name || max <= 0))
2548 list_for_each_entry(kctl, &card->controls, list) {
2549 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2555 mc = (struct soc_mixer_control *)kctl->private_value;
2556 if (max <= mc->max) {
2557 mc->platform_max = max;
2563 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2566 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2567 * mixer info callback
2568 * @kcontrol: mixer control
2569 * @uinfo: control element information
2571 * Returns 0 for success.
2573 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2574 struct snd_ctl_elem_info *uinfo)
2576 struct soc_mixer_control *mc =
2577 (struct soc_mixer_control *)kcontrol->private_value;
2581 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2583 uinfo->value.integer.min = 0;
2584 uinfo->value.integer.max = max-min;
2588 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2591 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2592 * mixer get callback
2593 * @kcontrol: mixer control
2594 * @uinfo: control element information
2596 * Returns 0 for success.
2598 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2599 struct snd_ctl_elem_value *ucontrol)
2601 struct soc_mixer_control *mc =
2602 (struct soc_mixer_control *)kcontrol->private_value;
2603 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2604 unsigned int mask = (1<<mc->shift)-1;
2606 int val = snd_soc_read(codec, mc->reg) & mask;
2607 int valr = snd_soc_read(codec, mc->rreg) & mask;
2609 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2610 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2613 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2616 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2617 * mixer put callback
2618 * @kcontrol: mixer control
2619 * @uinfo: control element information
2621 * Returns 0 for success.
2623 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2624 struct snd_ctl_elem_value *ucontrol)
2626 struct soc_mixer_control *mc =
2627 (struct soc_mixer_control *)kcontrol->private_value;
2628 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2629 unsigned int mask = (1<<mc->shift)-1;
2632 unsigned int val, valr, oval, ovalr;
2634 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2636 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2639 oval = snd_soc_read(codec, mc->reg) & mask;
2640 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2644 ret = snd_soc_write(codec, mc->reg, val);
2648 if (ovalr != valr) {
2649 ret = snd_soc_write(codec, mc->rreg, valr);
2656 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2659 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2661 * @clk_id: DAI specific clock ID
2662 * @freq: new clock frequency in Hz
2663 * @dir: new clock direction - input/output.
2665 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2667 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2668 unsigned int freq, int dir)
2670 if (dai->driver && dai->driver->ops->set_sysclk)
2671 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2672 else if (dai->codec && dai->codec->driver->set_sysclk)
2673 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2678 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2681 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2683 * @clk_id: DAI specific clock ID
2684 * @source: Source for the clock
2685 * @freq: new clock frequency in Hz
2686 * @dir: new clock direction - input/output.
2688 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2690 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2691 int source, unsigned int freq, int dir)
2693 if (codec->driver->set_sysclk)
2694 return codec->driver->set_sysclk(codec, clk_id, source,
2699 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2702 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2704 * @div_id: DAI specific clock divider ID
2705 * @div: new clock divisor.
2707 * Configures the clock dividers. This is used to derive the best DAI bit and
2708 * frame clocks from the system or master clock. It's best to set the DAI bit
2709 * and frame clocks as low as possible to save system power.
2711 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2712 int div_id, int div)
2714 if (dai->driver && dai->driver->ops->set_clkdiv)
2715 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2719 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2722 * snd_soc_dai_set_pll - configure DAI PLL.
2724 * @pll_id: DAI specific PLL ID
2725 * @source: DAI specific source for the PLL
2726 * @freq_in: PLL input clock frequency in Hz
2727 * @freq_out: requested PLL output clock frequency in Hz
2729 * Configures and enables PLL to generate output clock based on input clock.
2731 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2732 unsigned int freq_in, unsigned int freq_out)
2734 if (dai->driver && dai->driver->ops->set_pll)
2735 return dai->driver->ops->set_pll(dai, pll_id, source,
2737 else if (dai->codec && dai->codec->driver->set_pll)
2738 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2743 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2746 * snd_soc_codec_set_pll - configure codec PLL.
2748 * @pll_id: DAI specific PLL ID
2749 * @source: DAI specific source for the PLL
2750 * @freq_in: PLL input clock frequency in Hz
2751 * @freq_out: requested PLL output clock frequency in Hz
2753 * Configures and enables PLL to generate output clock based on input clock.
2755 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2756 unsigned int freq_in, unsigned int freq_out)
2758 if (codec->driver->set_pll)
2759 return codec->driver->set_pll(codec, pll_id, source,
2764 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2767 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2769 * @fmt: SND_SOC_DAIFMT_ format value.
2771 * Configures the DAI hardware format and clocking.
2773 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2775 if (dai->driver && dai->driver->ops->set_fmt)
2776 return dai->driver->ops->set_fmt(dai, fmt);
2780 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2783 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2785 * @tx_mask: bitmask representing active TX slots.
2786 * @rx_mask: bitmask representing active RX slots.
2787 * @slots: Number of slots in use.
2788 * @slot_width: Width in bits for each slot.
2790 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2793 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2794 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2796 if (dai->driver && dai->driver->ops->set_tdm_slot)
2797 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
2802 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
2805 * snd_soc_dai_set_channel_map - configure DAI audio channel map
2807 * @tx_num: how many TX channels
2808 * @tx_slot: pointer to an array which imply the TX slot number channel
2810 * @rx_num: how many RX channels
2811 * @rx_slot: pointer to an array which imply the RX slot number channel
2814 * configure the relationship between channel number and TDM slot number.
2816 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
2817 unsigned int tx_num, unsigned int *tx_slot,
2818 unsigned int rx_num, unsigned int *rx_slot)
2820 if (dai->driver && dai->driver->ops->set_channel_map)
2821 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
2826 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
2829 * snd_soc_dai_set_tristate - configure DAI system or master clock.
2831 * @tristate: tristate enable
2833 * Tristates the DAI so that others can use it.
2835 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
2837 if (dai->driver && dai->driver->ops->set_tristate)
2838 return dai->driver->ops->set_tristate(dai, tristate);
2842 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
2845 * snd_soc_dai_digital_mute - configure DAI system or master clock.
2847 * @mute: mute enable
2849 * Mutes the DAI DAC.
2851 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
2853 if (dai->driver && dai->driver->ops->digital_mute)
2854 return dai->driver->ops->digital_mute(dai, mute);
2858 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
2861 * snd_soc_register_card - Register a card with the ASoC core
2863 * @card: Card to register
2866 int snd_soc_register_card(struct snd_soc_card *card)
2870 if (!card->name || !card->dev)
2873 dev_set_drvdata(card->dev, card);
2875 snd_soc_initialize_card_lists(card);
2877 soc_init_card_debugfs(card);
2879 card->rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime) *
2880 (card->num_links + card->num_aux_devs),
2882 if (card->rtd == NULL)
2884 card->rtd_aux = &card->rtd[card->num_links];
2886 for (i = 0; i < card->num_links; i++)
2887 card->rtd[i].dai_link = &card->dai_link[i];
2889 INIT_LIST_HEAD(&card->list);
2890 card->instantiated = 0;
2891 mutex_init(&card->mutex);
2893 mutex_lock(&client_mutex);
2894 list_add(&card->list, &card_list);
2895 snd_soc_instantiate_cards();
2896 mutex_unlock(&client_mutex);
2898 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
2902 EXPORT_SYMBOL_GPL(snd_soc_register_card);
2905 * snd_soc_unregister_card - Unregister a card with the ASoC core
2907 * @card: Card to unregister
2910 int snd_soc_unregister_card(struct snd_soc_card *card)
2912 if (card->instantiated)
2913 soc_cleanup_card_resources(card);
2914 mutex_lock(&client_mutex);
2915 list_del(&card->list);
2916 mutex_unlock(&client_mutex);
2917 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
2921 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
2924 * Simplify DAI link configuration by removing ".-1" from device names
2925 * and sanitizing names.
2927 static char *fmt_single_name(struct device *dev, int *id)
2929 char *found, name[NAME_SIZE];
2932 if (dev_name(dev) == NULL)
2935 strlcpy(name, dev_name(dev), NAME_SIZE);
2937 /* are we a "%s.%d" name (platform and SPI components) */
2938 found = strstr(name, dev->driver->name);
2941 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
2943 /* discard ID from name if ID == -1 */
2945 found[strlen(dev->driver->name)] = '\0';
2949 /* I2C component devices are named "bus-addr" */
2950 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
2951 char tmp[NAME_SIZE];
2953 /* create unique ID number from I2C addr and bus */
2954 *id = ((id1 & 0xffff) << 16) + id2;
2956 /* sanitize component name for DAI link creation */
2957 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
2958 strlcpy(name, tmp, NAME_SIZE);
2963 return kstrdup(name, GFP_KERNEL);
2967 * Simplify DAI link naming for single devices with multiple DAIs by removing
2968 * any ".-1" and using the DAI name (instead of device name).
2970 static inline char *fmt_multiple_name(struct device *dev,
2971 struct snd_soc_dai_driver *dai_drv)
2973 if (dai_drv->name == NULL) {
2974 printk(KERN_ERR "asoc: error - multiple DAI %s registered with no name\n",
2979 return kstrdup(dai_drv->name, GFP_KERNEL);
2983 * snd_soc_register_dai - Register a DAI with the ASoC core
2985 * @dai: DAI to register
2987 int snd_soc_register_dai(struct device *dev,
2988 struct snd_soc_dai_driver *dai_drv)
2990 struct snd_soc_dai *dai;
2992 dev_dbg(dev, "dai register %s\n", dev_name(dev));
2994 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
2998 /* create DAI component name */
2999 dai->name = fmt_single_name(dev, &dai->id);
3000 if (dai->name == NULL) {
3006 dai->driver = dai_drv;
3007 if (!dai->driver->ops)
3008 dai->driver->ops = &null_dai_ops;
3010 mutex_lock(&client_mutex);
3011 list_add(&dai->list, &dai_list);
3012 snd_soc_instantiate_cards();
3013 mutex_unlock(&client_mutex);
3015 pr_debug("Registered DAI '%s'\n", dai->name);
3019 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3022 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3024 * @dai: DAI to unregister
3026 void snd_soc_unregister_dai(struct device *dev)
3028 struct snd_soc_dai *dai;
3030 list_for_each_entry(dai, &dai_list, list) {
3031 if (dev == dai->dev)
3037 mutex_lock(&client_mutex);
3038 list_del(&dai->list);
3039 mutex_unlock(&client_mutex);
3041 pr_debug("Unregistered DAI '%s'\n", dai->name);
3045 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3048 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3050 * @dai: Array of DAIs to register
3051 * @count: Number of DAIs
3053 int snd_soc_register_dais(struct device *dev,
3054 struct snd_soc_dai_driver *dai_drv, size_t count)
3056 struct snd_soc_dai *dai;
3059 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3061 for (i = 0; i < count; i++) {
3063 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3069 /* create DAI component name */
3070 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3071 if (dai->name == NULL) {
3078 dai->driver = &dai_drv[i];
3079 if (dai->driver->id)
3080 dai->id = dai->driver->id;
3083 if (!dai->driver->ops)
3084 dai->driver->ops = &null_dai_ops;
3086 mutex_lock(&client_mutex);
3087 list_add(&dai->list, &dai_list);
3088 mutex_unlock(&client_mutex);
3090 pr_debug("Registered DAI '%s'\n", dai->name);
3093 mutex_lock(&client_mutex);
3094 snd_soc_instantiate_cards();
3095 mutex_unlock(&client_mutex);
3099 for (i--; i >= 0; i--)
3100 snd_soc_unregister_dai(dev);
3104 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3107 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3109 * @dai: Array of DAIs to unregister
3110 * @count: Number of DAIs
3112 void snd_soc_unregister_dais(struct device *dev, size_t count)
3116 for (i = 0; i < count; i++)
3117 snd_soc_unregister_dai(dev);
3119 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3122 * snd_soc_register_platform - Register a platform with the ASoC core
3124 * @platform: platform to register
3126 int snd_soc_register_platform(struct device *dev,
3127 struct snd_soc_platform_driver *platform_drv)
3129 struct snd_soc_platform *platform;
3131 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3133 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3134 if (platform == NULL)
3137 /* create platform component name */
3138 platform->name = fmt_single_name(dev, &platform->id);
3139 if (platform->name == NULL) {
3144 platform->dev = dev;
3145 platform->driver = platform_drv;
3146 platform->dapm.dev = dev;
3147 platform->dapm.platform = platform;
3148 platform->dapm.stream_event = platform_drv->stream_event;
3150 mutex_lock(&client_mutex);
3151 list_add(&platform->list, &platform_list);
3152 snd_soc_instantiate_cards();
3153 mutex_unlock(&client_mutex);
3155 pr_debug("Registered platform '%s'\n", platform->name);
3159 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3162 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3164 * @platform: platform to unregister
3166 void snd_soc_unregister_platform(struct device *dev)
3168 struct snd_soc_platform *platform;
3170 list_for_each_entry(platform, &platform_list, list) {
3171 if (dev == platform->dev)
3177 mutex_lock(&client_mutex);
3178 list_del(&platform->list);
3179 mutex_unlock(&client_mutex);
3181 pr_debug("Unregistered platform '%s'\n", platform->name);
3182 kfree(platform->name);
3185 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3187 static u64 codec_format_map[] = {
3188 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3189 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3190 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3191 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3192 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3193 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3194 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3195 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3196 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3197 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3198 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3199 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3200 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3201 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3202 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3203 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3206 /* Fix up the DAI formats for endianness: codecs don't actually see
3207 * the endianness of the data but we're using the CPU format
3208 * definitions which do need to include endianness so we ensure that
3209 * codec DAIs always have both big and little endian variants set.
3211 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3215 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3216 if (stream->formats & codec_format_map[i])
3217 stream->formats |= codec_format_map[i];
3221 * snd_soc_register_codec - Register a codec with the ASoC core
3223 * @codec: codec to register
3225 int snd_soc_register_codec(struct device *dev,
3226 const struct snd_soc_codec_driver *codec_drv,
3227 struct snd_soc_dai_driver *dai_drv,
3231 struct snd_soc_codec *codec;
3234 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3236 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3240 /* create CODEC component name */
3241 codec->name = fmt_single_name(dev, &codec->id);
3242 if (codec->name == NULL) {
3247 if (codec_drv->compress_type)
3248 codec->compress_type = codec_drv->compress_type;
3250 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3252 codec->write = codec_drv->write;
3253 codec->read = codec_drv->read;
3254 codec->volatile_register = codec_drv->volatile_register;
3255 codec->readable_register = codec_drv->readable_register;
3256 codec->writable_register = codec_drv->writable_register;
3257 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3258 codec->dapm.dev = dev;
3259 codec->dapm.codec = codec;
3260 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3261 codec->dapm.stream_event = codec_drv->stream_event;
3263 codec->driver = codec_drv;
3264 codec->num_dai = num_dai;
3265 mutex_init(&codec->mutex);
3267 /* allocate CODEC register cache */
3268 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3269 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3270 codec->reg_size = reg_size;
3271 /* it is necessary to make a copy of the default register cache
3272 * because in the case of using a compression type that requires
3273 * the default register cache to be marked as __devinitconst the
3274 * kernel might have freed the array by the time we initialize
3277 if (codec_drv->reg_cache_default) {
3278 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3279 reg_size, GFP_KERNEL);
3280 if (!codec->reg_def_copy) {
3287 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3288 if (!codec->volatile_register)
3289 codec->volatile_register = snd_soc_default_volatile_register;
3290 if (!codec->readable_register)
3291 codec->readable_register = snd_soc_default_readable_register;
3292 if (!codec->writable_register)
3293 codec->writable_register = snd_soc_default_writable_register;
3296 for (i = 0; i < num_dai; i++) {
3297 fixup_codec_formats(&dai_drv[i].playback);
3298 fixup_codec_formats(&dai_drv[i].capture);
3301 /* register any DAIs */
3303 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3308 mutex_lock(&client_mutex);
3309 list_add(&codec->list, &codec_list);
3310 snd_soc_instantiate_cards();
3311 mutex_unlock(&client_mutex);
3313 pr_debug("Registered codec '%s'\n", codec->name);
3317 kfree(codec->reg_def_copy);
3318 codec->reg_def_copy = NULL;
3323 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3326 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3328 * @codec: codec to unregister
3330 void snd_soc_unregister_codec(struct device *dev)
3332 struct snd_soc_codec *codec;
3335 list_for_each_entry(codec, &codec_list, list) {
3336 if (dev == codec->dev)
3343 for (i = 0; i < codec->num_dai; i++)
3344 snd_soc_unregister_dai(dev);
3346 mutex_lock(&client_mutex);
3347 list_del(&codec->list);
3348 mutex_unlock(&client_mutex);
3350 pr_debug("Unregistered codec '%s'\n", codec->name);
3352 snd_soc_cache_exit(codec);
3353 kfree(codec->reg_def_copy);
3357 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3359 static int __init snd_soc_init(void)
3361 #ifdef CONFIG_DEBUG_FS
3362 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3363 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3365 "ASoC: Failed to create debugfs directory\n");
3366 snd_soc_debugfs_root = NULL;
3369 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3371 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3373 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
3375 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3377 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3378 &platform_list_fops))
3379 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3382 snd_soc_util_init();
3384 return platform_driver_register(&soc_driver);
3386 module_init(snd_soc_init);
3388 static void __exit snd_soc_exit(void)
3390 snd_soc_util_exit();
3392 #ifdef CONFIG_DEBUG_FS
3393 debugfs_remove_recursive(snd_soc_debugfs_root);
3395 platform_driver_unregister(&soc_driver);
3397 module_exit(snd_soc_exit);
3399 /* Module information */
3400 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3401 MODULE_DESCRIPTION("ALSA SoC Core");
3402 MODULE_LICENSE("GPL");
3403 MODULE_ALIAS("platform:soc-audio");