2 * soc-core.c -- ALSA SoC Audio Layer
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 * o Add hw rules to enforce rates, etc.
20 * o More testing with other codecs/machines.
21 * o Add more codecs and platforms to ensure good API coverage.
22 * o Support TDM on PCM and I2S
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <linux/bitops.h>
31 #include <linux/debugfs.h>
32 #include <linux/platform_device.h>
33 #include <linux/ctype.h>
34 #include <linux/slab.h>
36 #include <sound/ac97_codec.h>
37 #include <sound/core.h>
38 #include <sound/jack.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include <sound/soc.h>
42 #include <sound/initval.h>
44 #define CREATE_TRACE_POINTS
45 #include <trace/events/asoc.h>
49 static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq);
51 #ifdef CONFIG_DEBUG_FS
52 struct dentry *snd_soc_debugfs_root;
53 EXPORT_SYMBOL_GPL(snd_soc_debugfs_root);
56 static DEFINE_MUTEX(client_mutex);
57 static LIST_HEAD(card_list);
58 static LIST_HEAD(dai_list);
59 static LIST_HEAD(platform_list);
60 static LIST_HEAD(codec_list);
63 * This is a timeout to do a DAPM powerdown after a stream is closed().
64 * It can be used to eliminate pops between different playback streams, e.g.
65 * between two audio tracks.
67 static int pmdown_time = 5000;
68 module_param(pmdown_time, int, 0);
69 MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)");
71 /* returns the minimum number of bytes needed to represent
72 * a particular given value */
73 static int min_bytes_needed(unsigned long val)
78 for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c)
81 c = (sizeof val * 8) - c;
89 /* fill buf which is 'len' bytes with a formatted
90 * string of the form 'reg: value\n' */
91 static int format_register_str(struct snd_soc_codec *codec,
92 unsigned int reg, char *buf, size_t len)
94 int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
95 int regsize = codec->driver->reg_word_size * 2;
98 char regbuf[regsize + 1];
100 /* since tmpbuf is allocated on the stack, warn the callers if they
101 * try to abuse this function */
104 /* +2 for ': ' and + 1 for '\n' */
105 if (wordsize + regsize + 2 + 1 != len)
108 ret = snd_soc_read(codec, reg);
110 memset(regbuf, 'X', regsize);
111 regbuf[regsize] = '\0';
113 snprintf(regbuf, regsize + 1, "%.*x", regsize, ret);
116 /* prepare the buffer */
117 snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf);
118 /* copy it back to the caller without the '\0' */
119 memcpy(buf, tmpbuf, len);
124 /* codec register dump */
125 static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf,
126 size_t count, loff_t pos)
129 int wordsize, regsize;
134 wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2;
135 regsize = codec->driver->reg_word_size * 2;
137 len = wordsize + regsize + 2 + 1;
139 if (!codec->driver->reg_cache_size)
142 if (codec->driver->reg_cache_step)
143 step = codec->driver->reg_cache_step;
145 for (i = 0; i < codec->driver->reg_cache_size; i += step) {
146 if (!snd_soc_codec_readable_register(codec, i))
148 if (codec->driver->display_register) {
149 count += codec->driver->display_register(codec, buf + count,
150 PAGE_SIZE - count, i);
152 /* only support larger than PAGE_SIZE bytes debugfs
153 * entries for the default case */
155 if (total + len >= count - 1)
157 format_register_str(codec, i, buf + total, len);
164 total = min(total, count - 1);
169 static ssize_t codec_reg_show(struct device *dev,
170 struct device_attribute *attr, char *buf)
172 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
174 return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0);
177 static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL);
179 static ssize_t pmdown_time_show(struct device *dev,
180 struct device_attribute *attr, char *buf)
182 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
184 return sprintf(buf, "%ld\n", rtd->pmdown_time);
187 static ssize_t pmdown_time_set(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
191 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
194 ret = strict_strtol(buf, 10, &rtd->pmdown_time);
201 static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set);
203 #ifdef CONFIG_DEBUG_FS
204 static int codec_reg_open_file(struct inode *inode, struct file *file)
206 file->private_data = inode->i_private;
210 static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf,
211 size_t count, loff_t *ppos)
214 struct snd_soc_codec *codec = file->private_data;
217 if (*ppos < 0 || !count)
220 buf = kmalloc(count, GFP_KERNEL);
224 ret = soc_codec_reg_show(codec, buf, count, *ppos);
226 if (copy_to_user(user_buf, buf, ret)) {
237 static ssize_t codec_reg_write_file(struct file *file,
238 const char __user *user_buf, size_t count, loff_t *ppos)
243 unsigned long reg, value;
244 struct snd_soc_codec *codec = file->private_data;
246 buf_size = min(count, (sizeof(buf)-1));
247 if (copy_from_user(buf, user_buf, buf_size))
251 while (*start == ' ')
253 reg = simple_strtoul(start, &start, 16);
254 while (*start == ' ')
256 if (strict_strtoul(start, 16, &value))
259 /* Userspace has been fiddling around behind the kernel's back */
260 add_taint(TAINT_USER);
262 snd_soc_write(codec, reg, value);
266 static const struct file_operations codec_reg_fops = {
267 .open = codec_reg_open_file,
268 .read = codec_reg_read_file,
269 .write = codec_reg_write_file,
270 .llseek = default_llseek,
273 static void soc_init_codec_debugfs(struct snd_soc_codec *codec)
275 struct dentry *debugfs_card_root = codec->card->debugfs_card_root;
277 codec->debugfs_codec_root = debugfs_create_dir(codec->name,
279 if (!codec->debugfs_codec_root) {
280 dev_warn(codec->dev, "Failed to create codec debugfs directory\n");
284 debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root,
286 debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root,
289 codec->debugfs_reg = debugfs_create_file("codec_reg", 0644,
290 codec->debugfs_codec_root,
291 codec, &codec_reg_fops);
292 if (!codec->debugfs_reg)
293 dev_warn(codec->dev, "Failed to create codec register debugfs file\n");
295 snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root);
298 static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
300 debugfs_remove_recursive(codec->debugfs_codec_root);
303 static void soc_init_platform_debugfs(struct snd_soc_platform *platform)
305 struct dentry *debugfs_card_root = platform->card->debugfs_card_root;
307 platform->debugfs_platform_root = debugfs_create_dir(platform->name,
309 if (!platform->debugfs_platform_root) {
310 dev_warn(platform->dev,
311 "Failed to create platform debugfs directory\n");
315 snd_soc_dapm_debugfs_init(&platform->dapm,
316 platform->debugfs_platform_root);
319 static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
321 debugfs_remove_recursive(platform->debugfs_platform_root);
324 static ssize_t codec_list_read_file(struct file *file, char __user *user_buf,
325 size_t count, loff_t *ppos)
327 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
328 ssize_t len, ret = 0;
329 struct snd_soc_codec *codec;
334 list_for_each_entry(codec, &codec_list, list) {
335 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
339 if (ret > PAGE_SIZE) {
346 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
353 static const struct file_operations codec_list_fops = {
354 .read = codec_list_read_file,
355 .llseek = default_llseek,/* read accesses f_pos */
358 static ssize_t dai_list_read_file(struct file *file, char __user *user_buf,
359 size_t count, loff_t *ppos)
361 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
362 ssize_t len, ret = 0;
363 struct snd_soc_dai *dai;
368 list_for_each_entry(dai, &dai_list, list) {
369 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name);
372 if (ret > PAGE_SIZE) {
378 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
385 static const struct file_operations dai_list_fops = {
386 .read = dai_list_read_file,
387 .llseek = default_llseek,/* read accesses f_pos */
390 static ssize_t platform_list_read_file(struct file *file,
391 char __user *user_buf,
392 size_t count, loff_t *ppos)
394 char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
395 ssize_t len, ret = 0;
396 struct snd_soc_platform *platform;
401 list_for_each_entry(platform, &platform_list, list) {
402 len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n",
406 if (ret > PAGE_SIZE) {
412 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
419 static const struct file_operations platform_list_fops = {
420 .read = platform_list_read_file,
421 .llseek = default_llseek,/* read accesses f_pos */
424 static void soc_init_card_debugfs(struct snd_soc_card *card)
426 card->debugfs_card_root = debugfs_create_dir(card->name,
427 snd_soc_debugfs_root);
428 if (!card->debugfs_card_root) {
430 "ASoC: Failed to create card debugfs directory\n");
434 card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644,
435 card->debugfs_card_root,
437 if (!card->debugfs_pop_time)
439 "Failed to create pop time debugfs file\n");
442 static void soc_cleanup_card_debugfs(struct snd_soc_card *card)
444 debugfs_remove_recursive(card->debugfs_card_root);
449 static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec)
453 static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec)
457 static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform)
461 static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform)
465 static inline void soc_init_card_debugfs(struct snd_soc_card *card)
469 static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card)
474 #ifdef CONFIG_SND_SOC_AC97_BUS
475 /* unregister ac97 codec */
476 static int soc_ac97_dev_unregister(struct snd_soc_codec *codec)
478 if (codec->ac97->dev.bus)
479 device_unregister(&codec->ac97->dev);
483 /* stop no dev release warning */
484 static void soc_ac97_device_release(struct device *dev){}
486 /* register ac97 codec to bus */
487 static int soc_ac97_dev_register(struct snd_soc_codec *codec)
491 codec->ac97->dev.bus = &ac97_bus_type;
492 codec->ac97->dev.parent = codec->card->dev;
493 codec->ac97->dev.release = soc_ac97_device_release;
495 dev_set_name(&codec->ac97->dev, "%d-%d:%s",
496 codec->card->snd_card->number, 0, codec->name);
497 err = device_register(&codec->ac97->dev);
499 snd_printk(KERN_ERR "Can't register ac97 bus\n");
500 codec->ac97->dev.bus = NULL;
507 #ifdef CONFIG_PM_SLEEP
508 /* powers down audio subsystem for suspend */
509 int snd_soc_suspend(struct device *dev)
511 struct snd_soc_card *card = dev_get_drvdata(dev);
512 struct snd_soc_codec *codec;
515 /* If the initialization of this soc device failed, there is no codec
516 * associated with it. Just bail out in this case.
518 if (list_empty(&card->codec_dev_list))
521 /* Due to the resume being scheduled into a workqueue we could
522 * suspend before that's finished - wait for it to complete.
524 snd_power_lock(card->snd_card);
525 snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0);
526 snd_power_unlock(card->snd_card);
528 /* we're going to block userspace touching us until resume completes */
529 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot);
531 /* mute any active DACs */
532 for (i = 0; i < card->num_rtd; i++) {
533 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
534 struct snd_soc_dai_driver *drv = dai->driver;
536 if (card->rtd[i].dai_link->ignore_suspend)
539 if (drv->ops->digital_mute && dai->playback_active)
540 drv->ops->digital_mute(dai, 1);
543 /* suspend all pcms */
544 for (i = 0; i < card->num_rtd; i++) {
545 if (card->rtd[i].dai_link->ignore_suspend)
548 snd_pcm_suspend_all(card->rtd[i].pcm);
551 if (card->suspend_pre)
552 card->suspend_pre(card);
554 for (i = 0; i < card->num_rtd; i++) {
555 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
556 struct snd_soc_platform *platform = card->rtd[i].platform;
558 if (card->rtd[i].dai_link->ignore_suspend)
561 if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control)
562 cpu_dai->driver->suspend(cpu_dai);
563 if (platform->driver->suspend && !platform->suspended) {
564 platform->driver->suspend(cpu_dai);
565 platform->suspended = 1;
569 /* close any waiting streams and save state */
570 for (i = 0; i < card->num_rtd; i++) {
571 flush_delayed_work_sync(&card->rtd[i].delayed_work);
572 card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level;
575 for (i = 0; i < card->num_rtd; i++) {
576 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
578 if (card->rtd[i].dai_link->ignore_suspend)
581 snd_soc_dapm_stream_event(&card->rtd[i],
582 SNDRV_PCM_STREAM_PLAYBACK,
584 SND_SOC_DAPM_STREAM_SUSPEND);
586 snd_soc_dapm_stream_event(&card->rtd[i],
587 SNDRV_PCM_STREAM_CAPTURE,
589 SND_SOC_DAPM_STREAM_SUSPEND);
592 /* suspend all CODECs */
593 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
594 /* If there are paths active then the CODEC will be held with
595 * bias _ON and should not be suspended. */
596 if (!codec->suspended && codec->driver->suspend) {
597 switch (codec->dapm.bias_level) {
598 case SND_SOC_BIAS_STANDBY:
600 * If the CODEC is capable of idle
601 * bias off then being in STANDBY
602 * means it's doing something,
603 * otherwise fall through.
605 if (codec->dapm.idle_bias_off) {
607 "idle_bias_off CODEC on over suspend\n");
610 case SND_SOC_BIAS_OFF:
611 codec->driver->suspend(codec);
612 codec->suspended = 1;
613 codec->cache_sync = 1;
616 dev_dbg(codec->dev, "CODEC is on over suspend\n");
622 for (i = 0; i < card->num_rtd; i++) {
623 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
625 if (card->rtd[i].dai_link->ignore_suspend)
628 if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control)
629 cpu_dai->driver->suspend(cpu_dai);
632 if (card->suspend_post)
633 card->suspend_post(card);
637 EXPORT_SYMBOL_GPL(snd_soc_suspend);
639 /* deferred resume work, so resume can complete before we finished
640 * setting our codec back up, which can be very slow on I2C
642 static void soc_resume_deferred(struct work_struct *work)
644 struct snd_soc_card *card =
645 container_of(work, struct snd_soc_card, deferred_resume_work);
646 struct snd_soc_codec *codec;
649 /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time,
650 * so userspace apps are blocked from touching us
653 dev_dbg(card->dev, "starting resume work\n");
655 /* Bring us up into D2 so that DAPM starts enabling things */
656 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2);
658 if (card->resume_pre)
659 card->resume_pre(card);
661 /* resume AC97 DAIs */
662 for (i = 0; i < card->num_rtd; i++) {
663 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
665 if (card->rtd[i].dai_link->ignore_suspend)
668 if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control)
669 cpu_dai->driver->resume(cpu_dai);
672 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
673 /* If the CODEC was idle over suspend then it will have been
674 * left with bias OFF or STANDBY and suspended so we must now
675 * resume. Otherwise the suspend was suppressed.
677 if (codec->driver->resume && codec->suspended) {
678 switch (codec->dapm.bias_level) {
679 case SND_SOC_BIAS_STANDBY:
680 case SND_SOC_BIAS_OFF:
681 codec->driver->resume(codec);
682 codec->suspended = 0;
685 dev_dbg(codec->dev, "CODEC was on over suspend\n");
691 for (i = 0; i < card->num_rtd; i++) {
692 struct snd_soc_dai *codec_dai = card->rtd[i].codec_dai;
694 if (card->rtd[i].dai_link->ignore_suspend)
697 snd_soc_dapm_stream_event(&card->rtd[i],
698 SNDRV_PCM_STREAM_PLAYBACK, codec_dai,
699 SND_SOC_DAPM_STREAM_RESUME);
701 snd_soc_dapm_stream_event(&card->rtd[i],
702 SNDRV_PCM_STREAM_CAPTURE, codec_dai,
703 SND_SOC_DAPM_STREAM_RESUME);
706 /* unmute any active DACs */
707 for (i = 0; i < card->num_rtd; i++) {
708 struct snd_soc_dai *dai = card->rtd[i].codec_dai;
709 struct snd_soc_dai_driver *drv = dai->driver;
711 if (card->rtd[i].dai_link->ignore_suspend)
714 if (drv->ops->digital_mute && dai->playback_active)
715 drv->ops->digital_mute(dai, 0);
718 for (i = 0; i < card->num_rtd; i++) {
719 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
720 struct snd_soc_platform *platform = card->rtd[i].platform;
722 if (card->rtd[i].dai_link->ignore_suspend)
725 if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control)
726 cpu_dai->driver->resume(cpu_dai);
727 if (platform->driver->resume && platform->suspended) {
728 platform->driver->resume(cpu_dai);
729 platform->suspended = 0;
733 if (card->resume_post)
734 card->resume_post(card);
736 dev_dbg(card->dev, "resume work completed\n");
738 /* userspace can access us now we are back as we were before */
739 snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
742 /* powers up audio subsystem after a suspend */
743 int snd_soc_resume(struct device *dev)
745 struct snd_soc_card *card = dev_get_drvdata(dev);
746 int i, ac97_control = 0;
748 /* If the initialization of this soc device failed, there is no codec
749 * associated with it. Just bail out in this case.
751 if (list_empty(&card->codec_dev_list))
754 /* AC97 devices might have other drivers hanging off them so
755 * need to resume immediately. Other drivers don't have that
756 * problem and may take a substantial amount of time to resume
757 * due to I/O costs and anti-pop so handle them out of line.
759 for (i = 0; i < card->num_rtd; i++) {
760 struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai;
761 ac97_control |= cpu_dai->driver->ac97_control;
764 dev_dbg(dev, "Resuming AC97 immediately\n");
765 soc_resume_deferred(&card->deferred_resume_work);
767 dev_dbg(dev, "Scheduling resume work\n");
768 if (!schedule_work(&card->deferred_resume_work))
769 dev_err(dev, "resume work item may be lost\n");
774 EXPORT_SYMBOL_GPL(snd_soc_resume);
776 #define snd_soc_suspend NULL
777 #define snd_soc_resume NULL
780 static const struct snd_soc_dai_ops null_dai_ops = {
783 static int soc_bind_dai_link(struct snd_soc_card *card, int num)
785 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
786 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
787 struct snd_soc_codec *codec;
788 struct snd_soc_platform *platform;
789 struct snd_soc_dai *codec_dai, *cpu_dai;
790 const char *platform_name;
794 dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num);
796 /* do we already have the CPU DAI for this link ? */
800 /* no, then find CPU DAI from registered DAIs*/
801 list_for_each_entry(cpu_dai, &dai_list, list) {
802 if (dai_link->cpu_dai_of_node) {
803 if (cpu_dai->dev->of_node != dai_link->cpu_dai_of_node)
806 if (strcmp(cpu_dai->name, dai_link->cpu_dai_name))
810 rtd->cpu_dai = cpu_dai;
813 dev_dbg(card->dev, "CPU DAI %s not registered\n",
814 dai_link->cpu_dai_name);
817 /* do we already have the CODEC for this link ? */
822 /* no, then find CODEC from registered CODECs*/
823 list_for_each_entry(codec, &codec_list, list) {
824 if (dai_link->codec_of_node) {
825 if (codec->dev->of_node != dai_link->codec_of_node)
828 if (strcmp(codec->name, dai_link->codec_name))
835 * CODEC found, so find CODEC DAI from registered DAIs from
838 list_for_each_entry(codec_dai, &dai_list, list) {
839 if (codec->dev == codec_dai->dev &&
840 !strcmp(codec_dai->name,
841 dai_link->codec_dai_name)) {
843 rtd->codec_dai = codec_dai;
847 dev_dbg(card->dev, "CODEC DAI %s not registered\n",
848 dai_link->codec_dai_name);
852 dev_dbg(card->dev, "CODEC %s not registered\n",
853 dai_link->codec_name);
856 /* do we need a platform? */
860 /* if there's no platform we match on the empty platform */
861 platform_name = dai_link->platform_name;
862 if (!platform_name && !dai_link->platform_of_node)
863 platform_name = "snd-soc-dummy";
865 /* no, then find one from the set of registered platforms */
866 list_for_each_entry(platform, &platform_list, list) {
867 if (dai_link->platform_of_node) {
868 if (platform->dev->of_node !=
869 dai_link->platform_of_node)
872 if (strcmp(platform->name, platform_name))
876 rtd->platform = platform;
880 dev_dbg(card->dev, "platform %s not registered\n",
881 dai_link->platform_name);
885 /* mark rtd as complete if we found all 4 of our client devices */
886 if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) {
893 static void soc_remove_codec(struct snd_soc_codec *codec)
897 if (codec->driver->remove) {
898 err = codec->driver->remove(codec);
901 "asoc: failed to remove %s: %d\n",
905 /* Make sure all DAPM widgets are freed */
906 snd_soc_dapm_free(&codec->dapm);
908 soc_cleanup_codec_debugfs(codec);
910 list_del(&codec->card_list);
911 module_put(codec->dev->driver->owner);
914 static void soc_remove_dai_link(struct snd_soc_card *card, int num, int order)
916 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
917 struct snd_soc_codec *codec = rtd->codec;
918 struct snd_soc_platform *platform = rtd->platform;
919 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
922 /* unregister the rtd device */
923 if (rtd->dev_registered) {
924 device_remove_file(rtd->dev, &dev_attr_pmdown_time);
925 device_remove_file(rtd->dev, &dev_attr_codec_reg);
926 device_unregister(rtd->dev);
927 rtd->dev_registered = 0;
930 /* remove the CODEC DAI */
931 if (codec_dai && codec_dai->probed &&
932 codec_dai->driver->remove_order == order) {
933 if (codec_dai->driver->remove) {
934 err = codec_dai->driver->remove(codec_dai);
936 pr_err("asoc: failed to remove %s: %d\n",
937 codec_dai->name, err);
939 codec_dai->probed = 0;
940 list_del(&codec_dai->card_list);
943 /* remove the platform */
944 if (platform && platform->probed &&
945 platform->driver->remove_order == order) {
946 if (platform->driver->remove) {
947 err = platform->driver->remove(platform);
949 pr_err("asoc: failed to remove %s: %d\n",
950 platform->name, err);
953 /* Make sure all DAPM widgets are freed */
954 snd_soc_dapm_free(&platform->dapm);
956 soc_cleanup_platform_debugfs(platform);
957 platform->probed = 0;
958 list_del(&platform->card_list);
959 module_put(platform->dev->driver->owner);
962 /* remove the CODEC */
963 if (codec && codec->probed &&
964 codec->driver->remove_order == order)
965 soc_remove_codec(codec);
967 /* remove the cpu_dai */
968 if (cpu_dai && cpu_dai->probed &&
969 cpu_dai->driver->remove_order == order) {
970 if (cpu_dai->driver->remove) {
971 err = cpu_dai->driver->remove(cpu_dai);
973 pr_err("asoc: failed to remove %s: %d\n",
977 list_del(&cpu_dai->card_list);
978 module_put(cpu_dai->dev->driver->owner);
982 static void soc_remove_dai_links(struct snd_soc_card *card)
986 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
988 for (dai = 0; dai < card->num_rtd; dai++)
989 soc_remove_dai_link(card, dai, order);
994 static void soc_set_name_prefix(struct snd_soc_card *card,
995 struct snd_soc_codec *codec)
999 if (card->codec_conf == NULL)
1002 for (i = 0; i < card->num_configs; i++) {
1003 struct snd_soc_codec_conf *map = &card->codec_conf[i];
1004 if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
1005 codec->name_prefix = map->name_prefix;
1011 static int soc_probe_codec(struct snd_soc_card *card,
1012 struct snd_soc_codec *codec)
1015 const struct snd_soc_codec_driver *driver = codec->driver;
1016 struct snd_soc_dai *dai;
1019 codec->dapm.card = card;
1020 soc_set_name_prefix(card, codec);
1022 if (!try_module_get(codec->dev->driver->owner))
1025 soc_init_codec_debugfs(codec);
1027 if (driver->dapm_widgets)
1028 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
1029 driver->num_dapm_widgets);
1031 /* Create DAPM widgets for each DAI stream */
1032 list_for_each_entry(dai, &dai_list, list) {
1033 if (dai->dev != codec->dev)
1036 snd_soc_dapm_new_dai_widgets(&codec->dapm, dai);
1039 codec->dapm.idle_bias_off = driver->idle_bias_off;
1041 if (driver->probe) {
1042 ret = driver->probe(codec);
1045 "asoc: failed to probe CODEC %s: %d\n",
1051 if (driver->controls)
1052 snd_soc_add_codec_controls(codec, driver->controls,
1053 driver->num_controls);
1054 if (driver->dapm_routes)
1055 snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes,
1056 driver->num_dapm_routes);
1058 /* mark codec as probed and add to card codec list */
1060 list_add(&codec->card_list, &card->codec_dev_list);
1061 list_add(&codec->dapm.list, &card->dapm_list);
1066 soc_cleanup_codec_debugfs(codec);
1067 module_put(codec->dev->driver->owner);
1072 static int soc_probe_platform(struct snd_soc_card *card,
1073 struct snd_soc_platform *platform)
1076 const struct snd_soc_platform_driver *driver = platform->driver;
1078 platform->card = card;
1079 platform->dapm.card = card;
1081 if (!try_module_get(platform->dev->driver->owner))
1084 soc_init_platform_debugfs(platform);
1086 if (driver->dapm_widgets)
1087 snd_soc_dapm_new_controls(&platform->dapm,
1088 driver->dapm_widgets, driver->num_dapm_widgets);
1090 if (driver->probe) {
1091 ret = driver->probe(platform);
1093 dev_err(platform->dev,
1094 "asoc: failed to probe platform %s: %d\n",
1095 platform->name, ret);
1100 if (driver->controls)
1101 snd_soc_add_platform_controls(platform, driver->controls,
1102 driver->num_controls);
1103 if (driver->dapm_routes)
1104 snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
1105 driver->num_dapm_routes);
1107 /* mark platform as probed and add to card platform list */
1108 platform->probed = 1;
1109 list_add(&platform->card_list, &card->platform_dev_list);
1110 list_add(&platform->dapm.list, &card->dapm_list);
1115 soc_cleanup_platform_debugfs(platform);
1116 module_put(platform->dev->driver->owner);
1121 static void rtd_release(struct device *dev)
1126 static int soc_post_component_init(struct snd_soc_card *card,
1127 struct snd_soc_codec *codec,
1128 int num, int dailess)
1130 struct snd_soc_dai_link *dai_link = NULL;
1131 struct snd_soc_aux_dev *aux_dev = NULL;
1132 struct snd_soc_pcm_runtime *rtd;
1133 const char *temp, *name;
1137 dai_link = &card->dai_link[num];
1138 rtd = &card->rtd[num];
1139 name = dai_link->name;
1141 aux_dev = &card->aux_dev[num];
1142 rtd = &card->rtd_aux[num];
1143 name = aux_dev->name;
1147 /* Make sure all DAPM widgets are instantiated */
1148 snd_soc_dapm_new_widgets(&codec->dapm);
1150 /* machine controls, routes and widgets are not prefixed */
1151 temp = codec->name_prefix;
1152 codec->name_prefix = NULL;
1154 /* do machine specific initialization */
1155 if (!dailess && dai_link->init)
1156 ret = dai_link->init(rtd);
1157 else if (dailess && aux_dev->init)
1158 ret = aux_dev->init(&codec->dapm);
1160 dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret);
1163 codec->name_prefix = temp;
1165 /* register the rtd device */
1168 rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
1171 device_initialize(rtd->dev);
1172 rtd->dev->parent = card->dev;
1173 rtd->dev->release = rtd_release;
1174 rtd->dev->init_name = name;
1175 dev_set_drvdata(rtd->dev, rtd);
1176 mutex_init(&rtd->pcm_mutex);
1177 ret = device_add(rtd->dev);
1180 "asoc: failed to register runtime device: %d\n", ret);
1183 rtd->dev_registered = 1;
1185 /* add DAPM sysfs entries for this codec */
1186 ret = snd_soc_dapm_sys_add(rtd->dev);
1189 "asoc: failed to add codec dapm sysfs entries: %d\n",
1192 /* add codec sysfs entries */
1193 ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
1196 "asoc: failed to add codec sysfs files: %d\n", ret);
1201 static int soc_probe_dai_link(struct snd_soc_card *card, int num, int order)
1203 struct snd_soc_dai_link *dai_link = &card->dai_link[num];
1204 struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
1205 struct snd_soc_codec *codec = rtd->codec;
1206 struct snd_soc_platform *platform = rtd->platform;
1207 struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai;
1210 dev_dbg(card->dev, "probe %s dai link %d late %d\n",
1211 card->name, num, order);
1213 /* config components */
1214 codec_dai->codec = codec;
1215 cpu_dai->platform = platform;
1216 codec_dai->card = card;
1217 cpu_dai->card = card;
1219 /* set default power off timeout */
1220 rtd->pmdown_time = pmdown_time;
1222 /* probe the cpu_dai */
1223 if (!cpu_dai->probed &&
1224 cpu_dai->driver->probe_order == order) {
1225 if (!try_module_get(cpu_dai->dev->driver->owner))
1228 if (cpu_dai->driver->probe) {
1229 ret = cpu_dai->driver->probe(cpu_dai);
1231 pr_err("asoc: failed to probe CPU DAI %s: %d\n",
1232 cpu_dai->name, ret);
1233 module_put(cpu_dai->dev->driver->owner);
1237 cpu_dai->probed = 1;
1238 /* mark cpu_dai as probed and add to card dai list */
1239 list_add(&cpu_dai->card_list, &card->dai_dev_list);
1242 /* probe the CODEC */
1243 if (!codec->probed &&
1244 codec->driver->probe_order == order) {
1245 ret = soc_probe_codec(card, codec);
1250 /* probe the platform */
1251 if (!platform->probed &&
1252 platform->driver->probe_order == order) {
1253 ret = soc_probe_platform(card, platform);
1258 /* probe the CODEC DAI */
1259 if (!codec_dai->probed && codec_dai->driver->probe_order == order) {
1260 if (codec_dai->driver->probe) {
1261 ret = codec_dai->driver->probe(codec_dai);
1263 pr_err("asoc: failed to probe CODEC DAI %s: %d\n",
1264 codec_dai->name, ret);
1269 /* mark codec_dai as probed and add to card dai list */
1270 codec_dai->probed = 1;
1271 list_add(&codec_dai->card_list, &card->dai_dev_list);
1274 /* complete DAI probe during last probe */
1275 if (order != SND_SOC_COMP_ORDER_LAST)
1278 ret = soc_post_component_init(card, codec, num, 0);
1282 ret = device_create_file(rtd->dev, &dev_attr_pmdown_time);
1284 pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
1286 /* create the pcm */
1287 ret = soc_new_pcm(rtd, num);
1289 pr_err("asoc: can't create pcm %s :%d\n",
1290 dai_link->stream_name, ret);
1294 /* add platform data for AC97 devices */
1295 if (rtd->codec_dai->driver->ac97_control)
1296 snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata);
1301 #ifdef CONFIG_SND_SOC_AC97_BUS
1302 static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd)
1306 /* Only instantiate AC97 if not already done by the adaptor
1307 * for the generic AC97 subsystem.
1309 if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) {
1311 * It is possible that the AC97 device is already registered to
1312 * the device subsystem. This happens when the device is created
1313 * via snd_ac97_mixer(). Currently only SoC codec that does so
1314 * is the generic AC97 glue but others migh emerge.
1316 * In those cases we don't try to register the device again.
1318 if (!rtd->codec->ac97_created)
1321 ret = soc_ac97_dev_register(rtd->codec);
1323 pr_err("asoc: AC97 device register failed:%d\n", ret);
1327 rtd->codec->ac97_registered = 1;
1332 static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
1334 if (codec->ac97_registered) {
1335 soc_ac97_dev_unregister(codec);
1336 codec->ac97_registered = 0;
1341 static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
1343 struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
1344 struct snd_soc_codec *codec;
1347 /* find CODEC from registered CODECs*/
1348 list_for_each_entry(codec, &codec_list, list) {
1349 if (!strcmp(codec->name, aux_dev->codec_name)) {
1350 if (codec->probed) {
1352 "asoc: codec already probed");
1359 /* codec not found */
1360 dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name);
1364 ret = soc_probe_codec(card, codec);
1368 ret = soc_post_component_init(card, codec, num, 1);
1374 static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
1376 struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
1377 struct snd_soc_codec *codec = rtd->codec;
1379 /* unregister the rtd device */
1380 if (rtd->dev_registered) {
1381 device_remove_file(rtd->dev, &dev_attr_codec_reg);
1382 device_del(rtd->dev);
1383 rtd->dev_registered = 0;
1386 if (codec && codec->probed)
1387 soc_remove_codec(codec);
1390 static int snd_soc_init_codec_cache(struct snd_soc_codec *codec,
1391 enum snd_soc_compress_type compress_type)
1395 if (codec->cache_init)
1398 /* override the compress_type if necessary */
1399 if (compress_type && codec->compress_type != compress_type)
1400 codec->compress_type = compress_type;
1401 ret = snd_soc_cache_init(codec);
1403 dev_err(codec->dev, "Failed to set cache compression type: %d\n",
1407 codec->cache_init = 1;
1411 static void snd_soc_instantiate_card(struct snd_soc_card *card)
1413 struct snd_soc_codec *codec;
1414 struct snd_soc_codec_conf *codec_conf;
1415 enum snd_soc_compress_type compress_type;
1416 struct snd_soc_dai_link *dai_link;
1419 mutex_lock(&card->mutex);
1421 if (card->instantiated) {
1422 mutex_unlock(&card->mutex);
1427 for (i = 0; i < card->num_links; i++)
1428 soc_bind_dai_link(card, i);
1430 /* bind completed ? */
1431 if (card->num_rtd != card->num_links) {
1432 mutex_unlock(&card->mutex);
1436 /* initialize the register cache for each available codec */
1437 list_for_each_entry(codec, &codec_list, list) {
1438 if (codec->cache_init)
1440 /* by default we don't override the compress_type */
1442 /* check to see if we need to override the compress_type */
1443 for (i = 0; i < card->num_configs; ++i) {
1444 codec_conf = &card->codec_conf[i];
1445 if (!strcmp(codec->name, codec_conf->dev_name)) {
1446 compress_type = codec_conf->compress_type;
1447 if (compress_type && compress_type
1448 != codec->compress_type)
1452 ret = snd_soc_init_codec_cache(codec, compress_type);
1454 mutex_unlock(&card->mutex);
1459 /* card bind complete so register a sound card */
1460 ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
1461 card->owner, 0, &card->snd_card);
1463 pr_err("asoc: can't create sound card for card %s: %d\n",
1465 mutex_unlock(&card->mutex);
1468 card->snd_card->dev = card->dev;
1470 card->dapm.bias_level = SND_SOC_BIAS_OFF;
1471 card->dapm.dev = card->dev;
1472 card->dapm.card = card;
1473 list_add(&card->dapm.list, &card->dapm_list);
1475 #ifdef CONFIG_DEBUG_FS
1476 snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root);
1479 #ifdef CONFIG_PM_SLEEP
1480 /* deferred resume work */
1481 INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
1484 if (card->dapm_widgets)
1485 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
1486 card->num_dapm_widgets);
1488 /* initialise the sound card only once */
1490 ret = card->probe(card);
1492 goto card_probe_error;
1495 /* early DAI link probe */
1496 for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
1498 for (i = 0; i < card->num_links; i++) {
1499 ret = soc_probe_dai_link(card, i, order);
1501 pr_err("asoc: failed to instantiate card %s: %d\n",
1508 for (i = 0; i < card->num_aux_devs; i++) {
1509 ret = soc_probe_aux_dev(card, i);
1511 pr_err("asoc: failed to add auxiliary devices %s: %d\n",
1513 goto probe_aux_dev_err;
1517 snd_soc_dapm_link_dai_widgets(card);
1520 snd_soc_add_card_controls(card, card->controls, card->num_controls);
1522 if (card->dapm_routes)
1523 snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
1524 card->num_dapm_routes);
1526 snd_soc_dapm_new_widgets(&card->dapm);
1528 for (i = 0; i < card->num_links; i++) {
1529 dai_link = &card->dai_link[i];
1531 if (dai_link->dai_fmt) {
1532 ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai,
1534 if (ret != 0 && ret != -ENOTSUPP)
1535 dev_warn(card->rtd[i].codec_dai->dev,
1536 "Failed to set DAI format: %d\n",
1539 ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai,
1541 if (ret != 0 && ret != -ENOTSUPP)
1542 dev_warn(card->rtd[i].cpu_dai->dev,
1543 "Failed to set DAI format: %d\n",
1548 snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname),
1550 snprintf(card->snd_card->longname, sizeof(card->snd_card->longname),
1551 "%s", card->long_name ? card->long_name : card->name);
1552 snprintf(card->snd_card->driver, sizeof(card->snd_card->driver),
1553 "%s", card->driver_name ? card->driver_name : card->name);
1554 for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) {
1555 switch (card->snd_card->driver[i]) {
1561 if (!isalnum(card->snd_card->driver[i]))
1562 card->snd_card->driver[i] = '_';
1567 if (card->late_probe) {
1568 ret = card->late_probe(card);
1570 dev_err(card->dev, "%s late_probe() failed: %d\n",
1572 goto probe_aux_dev_err;
1576 snd_soc_dapm_new_widgets(&card->dapm);
1578 if (card->fully_routed)
1579 list_for_each_entry(codec, &card->codec_dev_list, card_list)
1580 snd_soc_dapm_auto_nc_codec_pins(codec);
1582 ret = snd_card_register(card->snd_card);
1584 pr_err("asoc: failed to register soundcard for %s: %d\n",
1586 goto probe_aux_dev_err;
1589 #ifdef CONFIG_SND_SOC_AC97_BUS
1590 /* register any AC97 codecs */
1591 for (i = 0; i < card->num_rtd; i++) {
1592 ret = soc_register_ac97_dai_link(&card->rtd[i]);
1594 pr_err("asoc: failed to register AC97 %s: %d\n",
1597 soc_unregister_ac97_dai_link(card->rtd[i].codec);
1598 goto probe_aux_dev_err;
1603 card->instantiated = 1;
1604 snd_soc_dapm_sync(&card->dapm);
1605 mutex_unlock(&card->mutex);
1609 for (i = 0; i < card->num_aux_devs; i++)
1610 soc_remove_aux_dev(card, i);
1613 soc_remove_dai_links(card);
1619 snd_card_free(card->snd_card);
1621 mutex_unlock(&card->mutex);
1625 * Attempt to initialise any uninitialised cards. Must be called with
1628 static void snd_soc_instantiate_cards(void)
1630 struct snd_soc_card *card;
1631 list_for_each_entry(card, &card_list, list)
1632 snd_soc_instantiate_card(card);
1635 /* probes a new socdev */
1636 static int soc_probe(struct platform_device *pdev)
1638 struct snd_soc_card *card = platform_get_drvdata(pdev);
1642 * no card, so machine driver should be registering card
1643 * we should not be here in that case so ret error
1648 dev_warn(&pdev->dev,
1649 "ASoC machine %s should use snd_soc_register_card()\n",
1652 /* Bodge while we unpick instantiation */
1653 card->dev = &pdev->dev;
1655 ret = snd_soc_register_card(card);
1657 dev_err(&pdev->dev, "Failed to register card\n");
1664 static int soc_cleanup_card_resources(struct snd_soc_card *card)
1668 /* make sure any delayed work runs */
1669 for (i = 0; i < card->num_rtd; i++) {
1670 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1671 flush_delayed_work_sync(&rtd->delayed_work);
1674 /* remove auxiliary devices */
1675 for (i = 0; i < card->num_aux_devs; i++)
1676 soc_remove_aux_dev(card, i);
1678 /* remove and free each DAI */
1679 soc_remove_dai_links(card);
1681 soc_cleanup_card_debugfs(card);
1683 /* remove the card */
1687 snd_soc_dapm_free(&card->dapm);
1689 snd_card_free(card->snd_card);
1694 /* removes a socdev */
1695 static int soc_remove(struct platform_device *pdev)
1697 struct snd_soc_card *card = platform_get_drvdata(pdev);
1699 snd_soc_unregister_card(card);
1703 int snd_soc_poweroff(struct device *dev)
1705 struct snd_soc_card *card = dev_get_drvdata(dev);
1708 if (!card->instantiated)
1711 /* Flush out pmdown_time work - we actually do want to run it
1712 * now, we're shutting down so no imminent restart. */
1713 for (i = 0; i < card->num_rtd; i++) {
1714 struct snd_soc_pcm_runtime *rtd = &card->rtd[i];
1715 flush_delayed_work_sync(&rtd->delayed_work);
1718 snd_soc_dapm_shutdown(card);
1722 EXPORT_SYMBOL_GPL(snd_soc_poweroff);
1724 const struct dev_pm_ops snd_soc_pm_ops = {
1725 .suspend = snd_soc_suspend,
1726 .resume = snd_soc_resume,
1727 .freeze = snd_soc_suspend,
1728 .thaw = snd_soc_resume,
1729 .poweroff = snd_soc_poweroff,
1730 .restore = snd_soc_resume,
1732 EXPORT_SYMBOL_GPL(snd_soc_pm_ops);
1734 /* ASoC platform driver */
1735 static struct platform_driver soc_driver = {
1737 .name = "soc-audio",
1738 .owner = THIS_MODULE,
1739 .pm = &snd_soc_pm_ops,
1742 .remove = soc_remove,
1746 * snd_soc_codec_volatile_register: Report if a register is volatile.
1748 * @codec: CODEC to query.
1749 * @reg: Register to query.
1751 * Boolean function indiciating if a CODEC register is volatile.
1753 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
1756 if (codec->volatile_register)
1757 return codec->volatile_register(codec, reg);
1761 EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register);
1764 * snd_soc_codec_readable_register: Report if a register is readable.
1766 * @codec: CODEC to query.
1767 * @reg: Register to query.
1769 * Boolean function indicating if a CODEC register is readable.
1771 int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
1774 if (codec->readable_register)
1775 return codec->readable_register(codec, reg);
1779 EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register);
1782 * snd_soc_codec_writable_register: Report if a register is writable.
1784 * @codec: CODEC to query.
1785 * @reg: Register to query.
1787 * Boolean function indicating if a CODEC register is writable.
1789 int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
1792 if (codec->writable_register)
1793 return codec->writable_register(codec, reg);
1797 EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register);
1799 int snd_soc_platform_read(struct snd_soc_platform *platform,
1804 if (!platform->driver->read) {
1805 dev_err(platform->dev, "platform has no read back\n");
1809 ret = platform->driver->read(platform, reg);
1810 dev_dbg(platform->dev, "read %x => %x\n", reg, ret);
1811 trace_snd_soc_preg_read(platform, reg, ret);
1815 EXPORT_SYMBOL_GPL(snd_soc_platform_read);
1817 int snd_soc_platform_write(struct snd_soc_platform *platform,
1818 unsigned int reg, unsigned int val)
1820 if (!platform->driver->write) {
1821 dev_err(platform->dev, "platform has no write back\n");
1825 dev_dbg(platform->dev, "write %x = %x\n", reg, val);
1826 trace_snd_soc_preg_write(platform, reg, val);
1827 return platform->driver->write(platform, reg, val);
1829 EXPORT_SYMBOL_GPL(snd_soc_platform_write);
1832 * snd_soc_new_ac97_codec - initailise AC97 device
1833 * @codec: audio codec
1834 * @ops: AC97 bus operations
1835 * @num: AC97 codec number
1837 * Initialises AC97 codec resources for use by ad-hoc devices only.
1839 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
1840 struct snd_ac97_bus_ops *ops, int num)
1842 mutex_lock(&codec->mutex);
1844 codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
1845 if (codec->ac97 == NULL) {
1846 mutex_unlock(&codec->mutex);
1850 codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL);
1851 if (codec->ac97->bus == NULL) {
1854 mutex_unlock(&codec->mutex);
1858 codec->ac97->bus->ops = ops;
1859 codec->ac97->num = num;
1862 * Mark the AC97 device to be created by us. This way we ensure that the
1863 * device will be registered with the device subsystem later on.
1865 codec->ac97_created = 1;
1867 mutex_unlock(&codec->mutex);
1870 EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec);
1873 * snd_soc_free_ac97_codec - free AC97 codec device
1874 * @codec: audio codec
1876 * Frees AC97 codec device resources.
1878 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec)
1880 mutex_lock(&codec->mutex);
1881 #ifdef CONFIG_SND_SOC_AC97_BUS
1882 soc_unregister_ac97_dai_link(codec);
1884 kfree(codec->ac97->bus);
1887 codec->ac97_created = 0;
1888 mutex_unlock(&codec->mutex);
1890 EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);
1892 unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg)
1896 ret = codec->read(codec, reg);
1897 dev_dbg(codec->dev, "read %x => %x\n", reg, ret);
1898 trace_snd_soc_reg_read(codec, reg, ret);
1902 EXPORT_SYMBOL_GPL(snd_soc_read);
1904 unsigned int snd_soc_write(struct snd_soc_codec *codec,
1905 unsigned int reg, unsigned int val)
1907 dev_dbg(codec->dev, "write %x = %x\n", reg, val);
1908 trace_snd_soc_reg_write(codec, reg, val);
1909 return codec->write(codec, reg, val);
1911 EXPORT_SYMBOL_GPL(snd_soc_write);
1913 unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
1914 unsigned int reg, const void *data, size_t len)
1916 return codec->bulk_write_raw(codec, reg, data, len);
1918 EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw);
1921 * snd_soc_update_bits - update codec register bits
1922 * @codec: audio codec
1923 * @reg: codec register
1924 * @mask: register mask
1927 * Writes new register value.
1929 * Returns 1 for change, 0 for no change, or negative error code.
1931 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
1932 unsigned int mask, unsigned int value)
1935 unsigned int old, new;
1938 if (codec->using_regmap) {
1939 ret = regmap_update_bits_check(codec->control_data, reg,
1940 mask, value, &change);
1942 ret = snd_soc_read(codec, reg);
1947 new = (old & ~mask) | (value & mask);
1948 change = old != new;
1950 ret = snd_soc_write(codec, reg, new);
1958 EXPORT_SYMBOL_GPL(snd_soc_update_bits);
1961 * snd_soc_update_bits_locked - update codec register bits
1962 * @codec: audio codec
1963 * @reg: codec register
1964 * @mask: register mask
1967 * Writes new register value, and takes the codec mutex.
1969 * Returns 1 for change else 0.
1971 int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
1972 unsigned short reg, unsigned int mask,
1977 mutex_lock(&codec->mutex);
1978 change = snd_soc_update_bits(codec, reg, mask, value);
1979 mutex_unlock(&codec->mutex);
1983 EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
1986 * snd_soc_test_bits - test register for change
1987 * @codec: audio codec
1988 * @reg: codec register
1989 * @mask: register mask
1992 * Tests a register with a new value and checks if the new value is
1993 * different from the old value.
1995 * Returns 1 for change else 0.
1997 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
1998 unsigned int mask, unsigned int value)
2001 unsigned int old, new;
2003 old = snd_soc_read(codec, reg);
2004 new = (old & ~mask) | value;
2005 change = old != new;
2009 EXPORT_SYMBOL_GPL(snd_soc_test_bits);
2012 * snd_soc_set_runtime_hwparams - set the runtime hardware parameters
2013 * @substream: the pcm substream
2014 * @hw: the hardware parameters
2016 * Sets the substream runtime hardware parameters.
2018 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
2019 const struct snd_pcm_hardware *hw)
2021 struct snd_pcm_runtime *runtime = substream->runtime;
2022 runtime->hw.info = hw->info;
2023 runtime->hw.formats = hw->formats;
2024 runtime->hw.period_bytes_min = hw->period_bytes_min;
2025 runtime->hw.period_bytes_max = hw->period_bytes_max;
2026 runtime->hw.periods_min = hw->periods_min;
2027 runtime->hw.periods_max = hw->periods_max;
2028 runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
2029 runtime->hw.fifo_size = hw->fifo_size;
2032 EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
2035 * snd_soc_cnew - create new control
2036 * @_template: control template
2037 * @data: control private data
2038 * @long_name: control long name
2039 * @prefix: control name prefix
2041 * Create a new mixer control from a template control.
2043 * Returns 0 for success, else error.
2045 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
2046 void *data, const char *long_name,
2049 struct snd_kcontrol_new template;
2050 struct snd_kcontrol *kcontrol;
2054 memcpy(&template, _template, sizeof(template));
2058 long_name = template.name;
2061 name_len = strlen(long_name) + strlen(prefix) + 2;
2062 name = kmalloc(name_len, GFP_KERNEL);
2066 snprintf(name, name_len, "%s %s", prefix, long_name);
2068 template.name = name;
2070 template.name = long_name;
2073 kcontrol = snd_ctl_new1(&template, data);
2079 EXPORT_SYMBOL_GPL(snd_soc_cnew);
2081 static int snd_soc_add_controls(struct snd_card *card, struct device *dev,
2082 const struct snd_kcontrol_new *controls, int num_controls,
2083 const char *prefix, void *data)
2087 for (i = 0; i < num_controls; i++) {
2088 const struct snd_kcontrol_new *control = &controls[i];
2089 err = snd_ctl_add(card, snd_soc_cnew(control, data,
2090 control->name, prefix));
2092 dev_err(dev, "Failed to add %s: %d\n", control->name, err);
2101 * snd_soc_add_codec_controls - add an array of controls to a codec.
2102 * Convenience function to add a list of controls. Many codecs were
2103 * duplicating this code.
2105 * @codec: codec to add controls to
2106 * @controls: array of controls to add
2107 * @num_controls: number of elements in the array
2109 * Return 0 for success, else error.
2111 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
2112 const struct snd_kcontrol_new *controls, int num_controls)
2114 struct snd_card *card = codec->card->snd_card;
2116 return snd_soc_add_controls(card, codec->dev, controls, num_controls,
2117 codec->name_prefix, codec);
2119 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
2122 * snd_soc_add_platform_controls - add an array of controls to a platform.
2123 * Convenience function to add a list of controls.
2125 * @platform: platform to add controls to
2126 * @controls: array of controls to add
2127 * @num_controls: number of elements in the array
2129 * Return 0 for success, else error.
2131 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
2132 const struct snd_kcontrol_new *controls, int num_controls)
2134 struct snd_card *card = platform->card->snd_card;
2136 return snd_soc_add_controls(card, platform->dev, controls, num_controls,
2139 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);
2142 * snd_soc_add_card_controls - add an array of controls to a SoC card.
2143 * Convenience function to add a list of controls.
2145 * @soc_card: SoC card to add controls to
2146 * @controls: array of controls to add
2147 * @num_controls: number of elements in the array
2149 * Return 0 for success, else error.
2151 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
2152 const struct snd_kcontrol_new *controls, int num_controls)
2154 struct snd_card *card = soc_card->snd_card;
2156 return snd_soc_add_controls(card, soc_card->dev, controls, num_controls,
2159 EXPORT_SYMBOL_GPL(snd_soc_add_card_controls);
2162 * snd_soc_add_dai_controls - add an array of controls to a DAI.
2163 * Convienience function to add a list of controls.
2165 * @dai: DAI to add controls to
2166 * @controls: array of controls to add
2167 * @num_controls: number of elements in the array
2169 * Return 0 for success, else error.
2171 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
2172 const struct snd_kcontrol_new *controls, int num_controls)
2174 struct snd_card *card = dai->card->snd_card;
2176 return snd_soc_add_controls(card, dai->dev, controls, num_controls,
2179 EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls);
2182 * snd_soc_info_enum_double - enumerated double mixer info callback
2183 * @kcontrol: mixer control
2184 * @uinfo: control element information
2186 * Callback to provide information about a double enumerated
2189 * Returns 0 for success.
2191 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
2192 struct snd_ctl_elem_info *uinfo)
2194 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2196 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2197 uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
2198 uinfo->value.enumerated.items = e->max;
2200 if (uinfo->value.enumerated.item > e->max - 1)
2201 uinfo->value.enumerated.item = e->max - 1;
2202 strcpy(uinfo->value.enumerated.name,
2203 e->texts[uinfo->value.enumerated.item]);
2206 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
2209 * snd_soc_get_enum_double - enumerated double mixer get callback
2210 * @kcontrol: mixer control
2211 * @ucontrol: control element information
2213 * Callback to get the value of a double enumerated mixer.
2215 * Returns 0 for success.
2217 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
2218 struct snd_ctl_elem_value *ucontrol)
2220 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2221 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2222 unsigned int val, bitmask;
2224 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2226 val = snd_soc_read(codec, e->reg);
2227 ucontrol->value.enumerated.item[0]
2228 = (val >> e->shift_l) & (bitmask - 1);
2229 if (e->shift_l != e->shift_r)
2230 ucontrol->value.enumerated.item[1] =
2231 (val >> e->shift_r) & (bitmask - 1);
2235 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
2238 * snd_soc_put_enum_double - enumerated double mixer put callback
2239 * @kcontrol: mixer control
2240 * @ucontrol: control element information
2242 * Callback to set the value of a double enumerated mixer.
2244 * Returns 0 for success.
2246 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
2247 struct snd_ctl_elem_value *ucontrol)
2249 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2250 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2252 unsigned int mask, bitmask;
2254 for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
2256 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2258 val = ucontrol->value.enumerated.item[0] << e->shift_l;
2259 mask = (bitmask - 1) << e->shift_l;
2260 if (e->shift_l != e->shift_r) {
2261 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2263 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2264 mask |= (bitmask - 1) << e->shift_r;
2267 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2269 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
2272 * snd_soc_get_value_enum_double - semi enumerated double mixer get callback
2273 * @kcontrol: mixer control
2274 * @ucontrol: control element information
2276 * Callback to get the value of a double semi enumerated mixer.
2278 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2279 * used for handling bitfield coded enumeration for example.
2281 * Returns 0 for success.
2283 int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
2284 struct snd_ctl_elem_value *ucontrol)
2286 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2287 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2288 unsigned int reg_val, val, mux;
2290 reg_val = snd_soc_read(codec, e->reg);
2291 val = (reg_val >> e->shift_l) & e->mask;
2292 for (mux = 0; mux < e->max; mux++) {
2293 if (val == e->values[mux])
2296 ucontrol->value.enumerated.item[0] = mux;
2297 if (e->shift_l != e->shift_r) {
2298 val = (reg_val >> e->shift_r) & e->mask;
2299 for (mux = 0; mux < e->max; mux++) {
2300 if (val == e->values[mux])
2303 ucontrol->value.enumerated.item[1] = mux;
2308 EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double);
2311 * snd_soc_put_value_enum_double - semi enumerated double mixer put callback
2312 * @kcontrol: mixer control
2313 * @ucontrol: control element information
2315 * Callback to set the value of a double semi enumerated mixer.
2317 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2318 * used for handling bitfield coded enumeration for example.
2320 * Returns 0 for success.
2322 int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
2323 struct snd_ctl_elem_value *ucontrol)
2325 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2326 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2330 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2332 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2333 mask = e->mask << e->shift_l;
2334 if (e->shift_l != e->shift_r) {
2335 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2337 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2338 mask |= e->mask << e->shift_r;
2341 return snd_soc_update_bits_locked(codec, e->reg, mask, val);
2343 EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
2346 * snd_soc_info_enum_ext - external enumerated single mixer info callback
2347 * @kcontrol: mixer control
2348 * @uinfo: control element information
2350 * Callback to provide information about an external enumerated
2353 * Returns 0 for success.
2355 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
2356 struct snd_ctl_elem_info *uinfo)
2358 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2360 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2362 uinfo->value.enumerated.items = e->max;
2364 if (uinfo->value.enumerated.item > e->max - 1)
2365 uinfo->value.enumerated.item = e->max - 1;
2366 strcpy(uinfo->value.enumerated.name,
2367 e->texts[uinfo->value.enumerated.item]);
2370 EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext);
2373 * snd_soc_info_volsw_ext - external single mixer info callback
2374 * @kcontrol: mixer control
2375 * @uinfo: control element information
2377 * Callback to provide information about a single external mixer control.
2379 * Returns 0 for success.
2381 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
2382 struct snd_ctl_elem_info *uinfo)
2384 int max = kcontrol->private_value;
2386 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
2387 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2389 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2392 uinfo->value.integer.min = 0;
2393 uinfo->value.integer.max = max;
2396 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext);
2399 * snd_soc_info_volsw - single mixer info callback
2400 * @kcontrol: mixer control
2401 * @uinfo: control element information
2403 * Callback to provide information about a single mixer control, or a double
2404 * mixer control that spans 2 registers.
2406 * Returns 0 for success.
2408 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
2409 struct snd_ctl_elem_info *uinfo)
2411 struct soc_mixer_control *mc =
2412 (struct soc_mixer_control *)kcontrol->private_value;
2415 if (!mc->platform_max)
2416 mc->platform_max = mc->max;
2417 platform_max = mc->platform_max;
2419 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
2420 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2422 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2424 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
2425 uinfo->value.integer.min = 0;
2426 uinfo->value.integer.max = platform_max;
2429 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
2432 * snd_soc_get_volsw - single mixer get callback
2433 * @kcontrol: mixer control
2434 * @ucontrol: control element information
2436 * Callback to get the value of a single mixer control, or a double mixer
2437 * control that spans 2 registers.
2439 * Returns 0 for success.
2441 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
2442 struct snd_ctl_elem_value *ucontrol)
2444 struct soc_mixer_control *mc =
2445 (struct soc_mixer_control *)kcontrol->private_value;
2446 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2447 unsigned int reg = mc->reg;
2448 unsigned int reg2 = mc->rreg;
2449 unsigned int shift = mc->shift;
2450 unsigned int rshift = mc->rshift;
2452 unsigned int mask = (1 << fls(max)) - 1;
2453 unsigned int invert = mc->invert;
2455 ucontrol->value.integer.value[0] =
2456 (snd_soc_read(codec, reg) >> shift) & mask;
2458 ucontrol->value.integer.value[0] =
2459 max - ucontrol->value.integer.value[0];
2461 if (snd_soc_volsw_is_stereo(mc)) {
2463 ucontrol->value.integer.value[1] =
2464 (snd_soc_read(codec, reg) >> rshift) & mask;
2466 ucontrol->value.integer.value[1] =
2467 (snd_soc_read(codec, reg2) >> shift) & mask;
2469 ucontrol->value.integer.value[1] =
2470 max - ucontrol->value.integer.value[1];
2475 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
2478 * snd_soc_put_volsw - single mixer put callback
2479 * @kcontrol: mixer control
2480 * @ucontrol: control element information
2482 * Callback to set the value of a single mixer control, or a double mixer
2483 * control that spans 2 registers.
2485 * Returns 0 for success.
2487 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
2488 struct snd_ctl_elem_value *ucontrol)
2490 struct soc_mixer_control *mc =
2491 (struct soc_mixer_control *)kcontrol->private_value;
2492 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2493 unsigned int reg = mc->reg;
2494 unsigned int reg2 = mc->rreg;
2495 unsigned int shift = mc->shift;
2496 unsigned int rshift = mc->rshift;
2498 unsigned int mask = (1 << fls(max)) - 1;
2499 unsigned int invert = mc->invert;
2502 unsigned int val2 = 0;
2503 unsigned int val, val_mask;
2505 val = (ucontrol->value.integer.value[0] & mask);
2508 val_mask = mask << shift;
2510 if (snd_soc_volsw_is_stereo(mc)) {
2511 val2 = (ucontrol->value.integer.value[1] & mask);
2515 val_mask |= mask << rshift;
2516 val |= val2 << rshift;
2518 val2 = val2 << shift;
2522 err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
2527 err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
2531 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
2534 * snd_soc_info_volsw_s8 - signed mixer info callback
2535 * @kcontrol: mixer control
2536 * @uinfo: control element information
2538 * Callback to provide information about a signed mixer control.
2540 * Returns 0 for success.
2542 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
2543 struct snd_ctl_elem_info *uinfo)
2545 struct soc_mixer_control *mc =
2546 (struct soc_mixer_control *)kcontrol->private_value;
2550 if (!mc->platform_max)
2551 mc->platform_max = mc->max;
2552 platform_max = mc->platform_max;
2554 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2556 uinfo->value.integer.min = 0;
2557 uinfo->value.integer.max = platform_max - min;
2560 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8);
2563 * snd_soc_get_volsw_s8 - signed mixer get callback
2564 * @kcontrol: mixer control
2565 * @ucontrol: control element information
2567 * Callback to get the value of a signed mixer control.
2569 * Returns 0 for success.
2571 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
2572 struct snd_ctl_elem_value *ucontrol)
2574 struct soc_mixer_control *mc =
2575 (struct soc_mixer_control *)kcontrol->private_value;
2576 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2577 unsigned int reg = mc->reg;
2579 int val = snd_soc_read(codec, reg);
2581 ucontrol->value.integer.value[0] =
2582 ((signed char)(val & 0xff))-min;
2583 ucontrol->value.integer.value[1] =
2584 ((signed char)((val >> 8) & 0xff))-min;
2587 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8);
2590 * snd_soc_put_volsw_sgn - signed mixer put callback
2591 * @kcontrol: mixer control
2592 * @ucontrol: control element information
2594 * Callback to set the value of a signed mixer control.
2596 * Returns 0 for success.
2598 int snd_soc_put_volsw_s8(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 reg = mc->reg;
2608 val = (ucontrol->value.integer.value[0]+min) & 0xff;
2609 val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
2611 return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
2613 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
2616 * snd_soc_limit_volume - Set new limit to an existing volume control.
2618 * @codec: where to look for the control
2619 * @name: Name of the control
2620 * @max: new maximum limit
2622 * Return 0 for success, else error.
2624 int snd_soc_limit_volume(struct snd_soc_codec *codec,
2625 const char *name, int max)
2627 struct snd_card *card = codec->card->snd_card;
2628 struct snd_kcontrol *kctl;
2629 struct soc_mixer_control *mc;
2633 /* Sanity check for name and max */
2634 if (unlikely(!name || max <= 0))
2637 list_for_each_entry(kctl, &card->controls, list) {
2638 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
2644 mc = (struct soc_mixer_control *)kctl->private_value;
2645 if (max <= mc->max) {
2646 mc->platform_max = max;
2652 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
2655 * snd_soc_info_volsw_2r_sx - double with tlv and variable data size
2656 * mixer info callback
2657 * @kcontrol: mixer control
2658 * @uinfo: control element information
2660 * Returns 0 for success.
2662 int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2663 struct snd_ctl_elem_info *uinfo)
2665 struct soc_mixer_control *mc =
2666 (struct soc_mixer_control *)kcontrol->private_value;
2670 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2672 uinfo->value.integer.min = 0;
2673 uinfo->value.integer.max = max-min;
2677 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r_sx);
2680 * snd_soc_get_volsw_2r_sx - double with tlv and variable data size
2681 * mixer get callback
2682 * @kcontrol: mixer control
2683 * @uinfo: control element information
2685 * Returns 0 for success.
2687 int snd_soc_get_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2688 struct snd_ctl_elem_value *ucontrol)
2690 struct soc_mixer_control *mc =
2691 (struct soc_mixer_control *)kcontrol->private_value;
2692 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2693 unsigned int mask = (1<<mc->shift)-1;
2695 int val = snd_soc_read(codec, mc->reg) & mask;
2696 int valr = snd_soc_read(codec, mc->rreg) & mask;
2698 ucontrol->value.integer.value[0] = ((val & 0xff)-min) & mask;
2699 ucontrol->value.integer.value[1] = ((valr & 0xff)-min) & mask;
2702 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r_sx);
2705 * snd_soc_put_volsw_2r_sx - double with tlv and variable data size
2706 * mixer put callback
2707 * @kcontrol: mixer control
2708 * @uinfo: control element information
2710 * Returns 0 for success.
2712 int snd_soc_put_volsw_2r_sx(struct snd_kcontrol *kcontrol,
2713 struct snd_ctl_elem_value *ucontrol)
2715 struct soc_mixer_control *mc =
2716 (struct soc_mixer_control *)kcontrol->private_value;
2717 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2718 unsigned int mask = (1<<mc->shift)-1;
2721 unsigned int val, valr, oval, ovalr;
2723 val = ((ucontrol->value.integer.value[0]+min) & 0xff);
2725 valr = ((ucontrol->value.integer.value[1]+min) & 0xff);
2728 oval = snd_soc_read(codec, mc->reg) & mask;
2729 ovalr = snd_soc_read(codec, mc->rreg) & mask;
2733 ret = snd_soc_write(codec, mc->reg, val);
2737 if (ovalr != valr) {
2738 ret = snd_soc_write(codec, mc->rreg, valr);
2745 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r_sx);
2747 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
2748 struct snd_ctl_elem_info *uinfo)
2750 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2751 struct soc_bytes *params = (void *)kcontrol->private_value;
2753 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
2754 uinfo->count = params->num_regs * codec->val_bytes;
2758 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
2760 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
2761 struct snd_ctl_elem_value *ucontrol)
2763 struct soc_bytes *params = (void *)kcontrol->private_value;
2764 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2767 if (codec->using_regmap)
2768 ret = regmap_raw_read(codec->control_data, params->base,
2769 ucontrol->value.bytes.data,
2770 params->num_regs * codec->val_bytes);
2774 /* Hide any masked bytes to ensure consistent data reporting */
2775 if (ret == 0 && params->mask) {
2776 switch (codec->val_bytes) {
2778 ucontrol->value.bytes.data[0] &= ~params->mask;
2781 ((u16 *)(&ucontrol->value.bytes.data))[0]
2785 ((u32 *)(&ucontrol->value.bytes.data))[0]
2795 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
2797 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
2798 struct snd_ctl_elem_value *ucontrol)
2800 struct soc_bytes *params = (void *)kcontrol->private_value;
2801 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
2806 if (!codec->using_regmap)
2809 data = ucontrol->value.bytes.data;
2810 len = params->num_regs * codec->val_bytes;
2813 * If we've got a mask then we need to preserve the register
2814 * bits. We shouldn't modify the incoming data so take a
2818 ret = regmap_read(codec->control_data, params->base, &val);
2822 val &= params->mask;
2824 data = kmemdup(data, len, GFP_KERNEL);
2828 switch (codec->val_bytes) {
2830 ((u8 *)data)[0] &= ~params->mask;
2831 ((u8 *)data)[0] |= val;
2834 ((u16 *)data)[0] &= cpu_to_be16(~params->mask);
2835 ((u16 *)data)[0] |= cpu_to_be16(val);
2838 ((u32 *)data)[0] &= cpu_to_be32(~params->mask);
2839 ((u32 *)data)[0] |= cpu_to_be32(val);
2846 ret = regmap_raw_write(codec->control_data, params->base,
2854 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
2857 * snd_soc_dai_set_sysclk - configure DAI system or master clock.
2859 * @clk_id: DAI specific clock ID
2860 * @freq: new clock frequency in Hz
2861 * @dir: new clock direction - input/output.
2863 * Configures the DAI master (MCLK) or system (SYSCLK) clocking.
2865 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
2866 unsigned int freq, int dir)
2868 if (dai->driver && dai->driver->ops->set_sysclk)
2869 return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
2870 else if (dai->codec && dai->codec->driver->set_sysclk)
2871 return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
2876 EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
2879 * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
2881 * @clk_id: DAI specific clock ID
2882 * @source: Source for the clock
2883 * @freq: new clock frequency in Hz
2884 * @dir: new clock direction - input/output.
2886 * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
2888 int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2889 int source, unsigned int freq, int dir)
2891 if (codec->driver->set_sysclk)
2892 return codec->driver->set_sysclk(codec, clk_id, source,
2897 EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
2900 * snd_soc_dai_set_clkdiv - configure DAI clock dividers.
2902 * @div_id: DAI specific clock divider ID
2903 * @div: new clock divisor.
2905 * Configures the clock dividers. This is used to derive the best DAI bit and
2906 * frame clocks from the system or master clock. It's best to set the DAI bit
2907 * and frame clocks as low as possible to save system power.
2909 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
2910 int div_id, int div)
2912 if (dai->driver && dai->driver->ops->set_clkdiv)
2913 return dai->driver->ops->set_clkdiv(dai, div_id, div);
2917 EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv);
2920 * snd_soc_dai_set_pll - configure DAI PLL.
2922 * @pll_id: DAI specific PLL ID
2923 * @source: DAI specific source for the PLL
2924 * @freq_in: PLL input clock frequency in Hz
2925 * @freq_out: requested PLL output clock frequency in Hz
2927 * Configures and enables PLL to generate output clock based on input clock.
2929 int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
2930 unsigned int freq_in, unsigned int freq_out)
2932 if (dai->driver && dai->driver->ops->set_pll)
2933 return dai->driver->ops->set_pll(dai, pll_id, source,
2935 else if (dai->codec && dai->codec->driver->set_pll)
2936 return dai->codec->driver->set_pll(dai->codec, pll_id, source,
2941 EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
2944 * snd_soc_codec_set_pll - configure codec PLL.
2946 * @pll_id: DAI specific PLL ID
2947 * @source: DAI specific source for the PLL
2948 * @freq_in: PLL input clock frequency in Hz
2949 * @freq_out: requested PLL output clock frequency in Hz
2951 * Configures and enables PLL to generate output clock based on input clock.
2953 int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2954 unsigned int freq_in, unsigned int freq_out)
2956 if (codec->driver->set_pll)
2957 return codec->driver->set_pll(codec, pll_id, source,
2962 EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
2965 * snd_soc_dai_set_fmt - configure DAI hardware audio format.
2967 * @fmt: SND_SOC_DAIFMT_ format value.
2969 * Configures the DAI hardware format and clocking.
2971 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
2973 if (dai->driver == NULL)
2975 if (dai->driver->ops->set_fmt == NULL)
2977 return dai->driver->ops->set_fmt(dai, fmt);
2979 EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt);
2982 * snd_soc_dai_set_tdm_slot - configure DAI TDM.
2984 * @tx_mask: bitmask representing active TX slots.
2985 * @rx_mask: bitmask representing active RX slots.
2986 * @slots: Number of slots in use.
2987 * @slot_width: Width in bits for each slot.
2989 * Configures a DAI for TDM operation. Both mask and slots are codec and DAI
2992 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
2993 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
2995 if (dai->driver && dai->driver->ops->set_tdm_slot)
2996 return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask,
3001 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
3004 * snd_soc_dai_set_channel_map - configure DAI audio channel map
3006 * @tx_num: how many TX channels
3007 * @tx_slot: pointer to an array which imply the TX slot number channel
3009 * @rx_num: how many RX channels
3010 * @rx_slot: pointer to an array which imply the RX slot number channel
3013 * configure the relationship between channel number and TDM slot number.
3015 int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
3016 unsigned int tx_num, unsigned int *tx_slot,
3017 unsigned int rx_num, unsigned int *rx_slot)
3019 if (dai->driver && dai->driver->ops->set_channel_map)
3020 return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot,
3025 EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
3028 * snd_soc_dai_set_tristate - configure DAI system or master clock.
3030 * @tristate: tristate enable
3032 * Tristates the DAI so that others can use it.
3034 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate)
3036 if (dai->driver && dai->driver->ops->set_tristate)
3037 return dai->driver->ops->set_tristate(dai, tristate);
3041 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate);
3044 * snd_soc_dai_digital_mute - configure DAI system or master clock.
3046 * @mute: mute enable
3048 * Mutes the DAI DAC.
3050 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute)
3052 if (dai->driver && dai->driver->ops->digital_mute)
3053 return dai->driver->ops->digital_mute(dai, mute);
3057 EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute);
3060 * snd_soc_register_card - Register a card with the ASoC core
3062 * @card: Card to register
3065 int snd_soc_register_card(struct snd_soc_card *card)
3069 if (!card->name || !card->dev)
3072 for (i = 0; i < card->num_links; i++) {
3073 struct snd_soc_dai_link *link = &card->dai_link[i];
3076 * Codec must be specified by 1 of name or OF node,
3077 * not both or neither.
3079 if (!!link->codec_name == !!link->codec_of_node) {
3081 "Neither/both codec name/of_node are set for %s\n",
3087 * Platform may be specified by either name or OF node, but
3088 * can be left unspecified, and a dummy platform will be used.
3090 if (link->platform_name && link->platform_of_node) {
3092 "Both platform name/of_node are set for %s\n", link->name);
3097 * CPU DAI must be specified by 1 of name or OF node,
3098 * not both or neither.
3100 if (!!link->cpu_dai_name == !!link->cpu_dai_of_node) {
3102 "Neither/both cpu_dai name/of_node are set for %s\n",
3108 dev_set_drvdata(card->dev, card);
3110 snd_soc_initialize_card_lists(card);
3112 soc_init_card_debugfs(card);
3114 card->rtd = devm_kzalloc(card->dev,
3115 sizeof(struct snd_soc_pcm_runtime) *
3116 (card->num_links + card->num_aux_devs),
3118 if (card->rtd == NULL)
3120 card->rtd_aux = &card->rtd[card->num_links];
3122 for (i = 0; i < card->num_links; i++)
3123 card->rtd[i].dai_link = &card->dai_link[i];
3125 INIT_LIST_HEAD(&card->list);
3126 INIT_LIST_HEAD(&card->dapm_dirty);
3127 card->instantiated = 0;
3128 mutex_init(&card->mutex);
3130 mutex_lock(&client_mutex);
3131 list_add(&card->list, &card_list);
3132 snd_soc_instantiate_cards();
3133 mutex_unlock(&client_mutex);
3135 dev_dbg(card->dev, "Registered card '%s'\n", card->name);
3139 EXPORT_SYMBOL_GPL(snd_soc_register_card);
3142 * snd_soc_unregister_card - Unregister a card with the ASoC core
3144 * @card: Card to unregister
3147 int snd_soc_unregister_card(struct snd_soc_card *card)
3149 if (card->instantiated)
3150 soc_cleanup_card_resources(card);
3151 mutex_lock(&client_mutex);
3152 list_del(&card->list);
3153 mutex_unlock(&client_mutex);
3154 dev_dbg(card->dev, "Unregistered card '%s'\n", card->name);
3158 EXPORT_SYMBOL_GPL(snd_soc_unregister_card);
3161 * Simplify DAI link configuration by removing ".-1" from device names
3162 * and sanitizing names.
3164 static char *fmt_single_name(struct device *dev, int *id)
3166 char *found, name[NAME_SIZE];
3169 if (dev_name(dev) == NULL)
3172 strlcpy(name, dev_name(dev), NAME_SIZE);
3174 /* are we a "%s.%d" name (platform and SPI components) */
3175 found = strstr(name, dev->driver->name);
3178 if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) {
3180 /* discard ID from name if ID == -1 */
3182 found[strlen(dev->driver->name)] = '\0';
3186 /* I2C component devices are named "bus-addr" */
3187 if (sscanf(name, "%x-%x", &id1, &id2) == 2) {
3188 char tmp[NAME_SIZE];
3190 /* create unique ID number from I2C addr and bus */
3191 *id = ((id1 & 0xffff) << 16) + id2;
3193 /* sanitize component name for DAI link creation */
3194 snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name);
3195 strlcpy(name, tmp, NAME_SIZE);
3200 return kstrdup(name, GFP_KERNEL);
3204 * Simplify DAI link naming for single devices with multiple DAIs by removing
3205 * any ".-1" and using the DAI name (instead of device name).
3207 static inline char *fmt_multiple_name(struct device *dev,
3208 struct snd_soc_dai_driver *dai_drv)
3210 if (dai_drv->name == NULL) {
3211 pr_err("asoc: error - multiple DAI %s registered with no name\n",
3216 return kstrdup(dai_drv->name, GFP_KERNEL);
3220 * snd_soc_register_dai - Register a DAI with the ASoC core
3222 * @dai: DAI to register
3224 int snd_soc_register_dai(struct device *dev,
3225 struct snd_soc_dai_driver *dai_drv)
3227 struct snd_soc_dai *dai;
3229 dev_dbg(dev, "dai register %s\n", dev_name(dev));
3231 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3235 /* create DAI component name */
3236 dai->name = fmt_single_name(dev, &dai->id);
3237 if (dai->name == NULL) {
3243 dai->driver = dai_drv;
3244 if (!dai->driver->ops)
3245 dai->driver->ops = &null_dai_ops;
3247 mutex_lock(&client_mutex);
3248 list_add(&dai->list, &dai_list);
3249 snd_soc_instantiate_cards();
3250 mutex_unlock(&client_mutex);
3252 pr_debug("Registered DAI '%s'\n", dai->name);
3256 EXPORT_SYMBOL_GPL(snd_soc_register_dai);
3259 * snd_soc_unregister_dai - Unregister a DAI from the ASoC core
3261 * @dai: DAI to unregister
3263 void snd_soc_unregister_dai(struct device *dev)
3265 struct snd_soc_dai *dai;
3267 list_for_each_entry(dai, &dai_list, list) {
3268 if (dev == dai->dev)
3274 mutex_lock(&client_mutex);
3275 list_del(&dai->list);
3276 mutex_unlock(&client_mutex);
3278 pr_debug("Unregistered DAI '%s'\n", dai->name);
3282 EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
3285 * snd_soc_register_dais - Register multiple DAIs with the ASoC core
3287 * @dai: Array of DAIs to register
3288 * @count: Number of DAIs
3290 int snd_soc_register_dais(struct device *dev,
3291 struct snd_soc_dai_driver *dai_drv, size_t count)
3293 struct snd_soc_dai *dai;
3296 dev_dbg(dev, "dai register %s #%Zu\n", dev_name(dev), count);
3298 for (i = 0; i < count; i++) {
3300 dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL);
3306 /* create DAI component name */
3307 dai->name = fmt_multiple_name(dev, &dai_drv[i]);
3308 if (dai->name == NULL) {
3315 dai->driver = &dai_drv[i];
3316 if (dai->driver->id)
3317 dai->id = dai->driver->id;
3320 if (!dai->driver->ops)
3321 dai->driver->ops = &null_dai_ops;
3323 mutex_lock(&client_mutex);
3324 list_add(&dai->list, &dai_list);
3325 mutex_unlock(&client_mutex);
3327 pr_debug("Registered DAI '%s'\n", dai->name);
3330 mutex_lock(&client_mutex);
3331 snd_soc_instantiate_cards();
3332 mutex_unlock(&client_mutex);
3336 for (i--; i >= 0; i--)
3337 snd_soc_unregister_dai(dev);
3341 EXPORT_SYMBOL_GPL(snd_soc_register_dais);
3344 * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core
3346 * @dai: Array of DAIs to unregister
3347 * @count: Number of DAIs
3349 void snd_soc_unregister_dais(struct device *dev, size_t count)
3353 for (i = 0; i < count; i++)
3354 snd_soc_unregister_dai(dev);
3356 EXPORT_SYMBOL_GPL(snd_soc_unregister_dais);
3359 * snd_soc_register_platform - Register a platform with the ASoC core
3361 * @platform: platform to register
3363 int snd_soc_register_platform(struct device *dev,
3364 struct snd_soc_platform_driver *platform_drv)
3366 struct snd_soc_platform *platform;
3368 dev_dbg(dev, "platform register %s\n", dev_name(dev));
3370 platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL);
3371 if (platform == NULL)
3374 /* create platform component name */
3375 platform->name = fmt_single_name(dev, &platform->id);
3376 if (platform->name == NULL) {
3381 platform->dev = dev;
3382 platform->driver = platform_drv;
3383 platform->dapm.dev = dev;
3384 platform->dapm.platform = platform;
3385 platform->dapm.stream_event = platform_drv->stream_event;
3386 mutex_init(&platform->mutex);
3388 mutex_lock(&client_mutex);
3389 list_add(&platform->list, &platform_list);
3390 snd_soc_instantiate_cards();
3391 mutex_unlock(&client_mutex);
3393 pr_debug("Registered platform '%s'\n", platform->name);
3397 EXPORT_SYMBOL_GPL(snd_soc_register_platform);
3400 * snd_soc_unregister_platform - Unregister a platform from the ASoC core
3402 * @platform: platform to unregister
3404 void snd_soc_unregister_platform(struct device *dev)
3406 struct snd_soc_platform *platform;
3408 list_for_each_entry(platform, &platform_list, list) {
3409 if (dev == platform->dev)
3415 mutex_lock(&client_mutex);
3416 list_del(&platform->list);
3417 mutex_unlock(&client_mutex);
3419 pr_debug("Unregistered platform '%s'\n", platform->name);
3420 kfree(platform->name);
3423 EXPORT_SYMBOL_GPL(snd_soc_unregister_platform);
3425 static u64 codec_format_map[] = {
3426 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE,
3427 SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE,
3428 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE,
3429 SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
3430 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
3431 SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE,
3432 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3433 SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE,
3434 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE,
3435 SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE,
3436 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE,
3437 SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE,
3438 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE,
3439 SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE,
3440 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
3441 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
3444 /* Fix up the DAI formats for endianness: codecs don't actually see
3445 * the endianness of the data but we're using the CPU format
3446 * definitions which do need to include endianness so we ensure that
3447 * codec DAIs always have both big and little endian variants set.
3449 static void fixup_codec_formats(struct snd_soc_pcm_stream *stream)
3453 for (i = 0; i < ARRAY_SIZE(codec_format_map); i++)
3454 if (stream->formats & codec_format_map[i])
3455 stream->formats |= codec_format_map[i];
3459 * snd_soc_register_codec - Register a codec with the ASoC core
3461 * @codec: codec to register
3463 int snd_soc_register_codec(struct device *dev,
3464 const struct snd_soc_codec_driver *codec_drv,
3465 struct snd_soc_dai_driver *dai_drv,
3469 struct snd_soc_codec *codec;
3472 dev_dbg(dev, "codec register %s\n", dev_name(dev));
3474 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
3478 /* create CODEC component name */
3479 codec->name = fmt_single_name(dev, &codec->id);
3480 if (codec->name == NULL) {
3485 if (codec_drv->compress_type)
3486 codec->compress_type = codec_drv->compress_type;
3488 codec->compress_type = SND_SOC_FLAT_COMPRESSION;
3490 codec->write = codec_drv->write;
3491 codec->read = codec_drv->read;
3492 codec->volatile_register = codec_drv->volatile_register;
3493 codec->readable_register = codec_drv->readable_register;
3494 codec->writable_register = codec_drv->writable_register;
3495 codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time;
3496 codec->dapm.bias_level = SND_SOC_BIAS_OFF;
3497 codec->dapm.dev = dev;
3498 codec->dapm.codec = codec;
3499 codec->dapm.seq_notifier = codec_drv->seq_notifier;
3500 codec->dapm.stream_event = codec_drv->stream_event;
3502 codec->driver = codec_drv;
3503 codec->num_dai = num_dai;
3504 mutex_init(&codec->mutex);
3506 /* allocate CODEC register cache */
3507 if (codec_drv->reg_cache_size && codec_drv->reg_word_size) {
3508 reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size;
3509 codec->reg_size = reg_size;
3510 /* it is necessary to make a copy of the default register cache
3511 * because in the case of using a compression type that requires
3512 * the default register cache to be marked as __devinitconst the
3513 * kernel might have freed the array by the time we initialize
3516 if (codec_drv->reg_cache_default) {
3517 codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default,
3518 reg_size, GFP_KERNEL);
3519 if (!codec->reg_def_copy) {
3526 if (codec_drv->reg_access_size && codec_drv->reg_access_default) {
3527 if (!codec->volatile_register)
3528 codec->volatile_register = snd_soc_default_volatile_register;
3529 if (!codec->readable_register)
3530 codec->readable_register = snd_soc_default_readable_register;
3531 if (!codec->writable_register)
3532 codec->writable_register = snd_soc_default_writable_register;
3535 for (i = 0; i < num_dai; i++) {
3536 fixup_codec_formats(&dai_drv[i].playback);
3537 fixup_codec_formats(&dai_drv[i].capture);
3540 /* register any DAIs */
3542 ret = snd_soc_register_dais(dev, dai_drv, num_dai);
3547 mutex_lock(&client_mutex);
3548 list_add(&codec->list, &codec_list);
3549 snd_soc_instantiate_cards();
3550 mutex_unlock(&client_mutex);
3552 pr_debug("Registered codec '%s'\n", codec->name);
3556 kfree(codec->reg_def_copy);
3557 codec->reg_def_copy = NULL;
3562 EXPORT_SYMBOL_GPL(snd_soc_register_codec);
3565 * snd_soc_unregister_codec - Unregister a codec from the ASoC core
3567 * @codec: codec to unregister
3569 void snd_soc_unregister_codec(struct device *dev)
3571 struct snd_soc_codec *codec;
3574 list_for_each_entry(codec, &codec_list, list) {
3575 if (dev == codec->dev)
3582 for (i = 0; i < codec->num_dai; i++)
3583 snd_soc_unregister_dai(dev);
3585 mutex_lock(&client_mutex);
3586 list_del(&codec->list);
3587 mutex_unlock(&client_mutex);
3589 pr_debug("Unregistered codec '%s'\n", codec->name);
3591 snd_soc_cache_exit(codec);
3592 kfree(codec->reg_def_copy);
3596 EXPORT_SYMBOL_GPL(snd_soc_unregister_codec);
3598 /* Retrieve a card's name from device tree */
3599 int snd_soc_of_parse_card_name(struct snd_soc_card *card,
3600 const char *propname)
3602 struct device_node *np = card->dev->of_node;
3605 ret = of_property_read_string_index(np, propname, 0, &card->name);
3607 * EINVAL means the property does not exist. This is fine providing
3608 * card->name was previously set, which is checked later in
3609 * snd_soc_register_card.
3611 if (ret < 0 && ret != -EINVAL) {
3613 "Property '%s' could not be read: %d\n",
3620 EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name);
3622 int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
3623 const char *propname)
3625 struct device_node *np = card->dev->of_node;
3627 struct snd_soc_dapm_route *routes;
3630 num_routes = of_property_count_strings(np, propname);
3631 if (num_routes & 1) {
3633 "Property '%s's length is not even\n",
3640 "Property '%s's length is zero\n",
3645 routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes),
3649 "Could not allocate DAPM route table\n");
3653 for (i = 0; i < num_routes; i++) {
3654 ret = of_property_read_string_index(np, propname,
3655 2 * i, &routes[i].sink);
3658 "Property '%s' index %d could not be read: %d\n",
3659 propname, 2 * i, ret);
3662 ret = of_property_read_string_index(np, propname,
3663 (2 * i) + 1, &routes[i].source);
3666 "Property '%s' index %d could not be read: %d\n",
3667 propname, (2 * i) + 1, ret);
3672 card->num_dapm_routes = num_routes;
3673 card->dapm_routes = routes;
3677 EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing);
3679 static int __init snd_soc_init(void)
3681 #ifdef CONFIG_DEBUG_FS
3682 snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL);
3683 if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) {
3684 pr_warn("ASoC: Failed to create debugfs directory\n");
3685 snd_soc_debugfs_root = NULL;
3688 if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL,
3690 pr_warn("ASoC: Failed to create CODEC list debugfs file\n");
3692 if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL,
3694 pr_warn("ASoC: Failed to create DAI list debugfs file\n");
3696 if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL,
3697 &platform_list_fops))
3698 pr_warn("ASoC: Failed to create platform list debugfs file\n");
3701 snd_soc_util_init();
3703 return platform_driver_register(&soc_driver);
3705 module_init(snd_soc_init);
3707 static void __exit snd_soc_exit(void)
3709 snd_soc_util_exit();
3711 #ifdef CONFIG_DEBUG_FS
3712 debugfs_remove_recursive(snd_soc_debugfs_root);
3714 platform_driver_unregister(&soc_driver);
3716 module_exit(snd_soc_exit);
3718 /* Module information */
3719 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3720 MODULE_DESCRIPTION("ALSA SoC Core");
3721 MODULE_LICENSE("GPL");
3722 MODULE_ALIAS("platform:soc-audio");